citadel/msgbase.c

   1 /*
   2  * Implements the message store.
   3  *
   4  * Copyright (c) 1987-2012 by the citadel.org team
   5  *
   6  * This program is open source software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 3.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include "sysdep.h"
  16 #include <stdlib.h>
  17 #include <unistd.h>
  18 #include <stdio.h>
  19 #include <fcntl.h>
  20
  21 #if TIME_WITH_SYS_TIME
  22 # include <sys/time.h>
  23 # include <time.h>
  24 #else
  25 # if HAVE_SYS_TIME_H
  26 #  include <sys/time.h>
  27 # else
  28 #  include <time.h>
  29 # endif
  30 #endif
  31
  32
  33 #include <ctype.h>
  34 #include <string.h>
  35 #include <limits.h>
  36 #include <errno.h>
  37 #include <stdarg.h>
  38 #include <sys/stat.h>
  39 #include <sys/types.h>
  40 #include <regex.h>
  41
  42 #include "md5.h"
  43
  44 #include <libcitadel.h>
  45 #include "citadel.h"
  46 #include "server.h"
  47 #include "serv_extensions.h"
  48 #include "database.h"
  49 #include "msgbase.h"
  50 #include "support.h"
  51 #include "sysdep_decls.h"
  52 #include "citserver.h"
  53 #include "room_ops.h"
  54 #include "user_ops.h"
  55 #include "file_ops.h"
  56 #include "config.h"
  57 #include "control.h"
  58 #include "genstamp.h"
  59 #include "internet_addressing.h"
  60 #include "euidindex.h"
  61 #include "journaling.h"
  62 #include "citadel_dirs.h"
  63 #include "clientsocket.h"
  64 #include "threads.h"
  65
  66 #include "ctdl_module.h"
  67
  68 long config_msgnum;
  69 struct addresses_to_be_filed *atbf = NULL;
  70
  71 /* This temp file holds the queue of operations for AdjRefCount() */
  72 static FILE *arcfp = NULL;
  73 void AdjRefCountList(long *msgnum, long nmsg, int incr);
  74
  75 int MessageDebugEnabled = 0;
  76
  77 /*
  78  * These are the four-character field headers we use when outputting
  79  * messages in Citadel format (as opposed to RFC822 format).
  80  */
  81 char *msgkeys[] = {
  82         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  83         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  84         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  85         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  86         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  87         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  88         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  89         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  90         NULL,
  91         "from", /* A */
  92         NULL,   /* B */
  93         NULL,   /* C */
  94         NULL,   /* D */
  95         "exti", /* E */
  96         "rfca", /* F */
  97         NULL,   /* G */
  98         "hnod", /* H */
  99         "msgn", /* I */
 100         "jrnl", /* J */
 101         "rep2", /* K */
 102         "list", /* L */
 103         "text", /* M */
 104         "node", /* N */
 105         "room", /* O */
 106         "path", /* P */
 107         NULL,   /* Q */
 108         "rcpt", /* R */
 109         "spec", /* S */
 110         "time", /* T */
 111         "subj", /* U */
 112         "nvto", /* V */
 113         "wefw", /* W */
 114         NULL,   /* X */
 115         "cccc", /* Y */
 116         NULL    /* Z */
 117 };
 118
 119 eMsgField FieldOrder[]  = {
 120 /* Important fields */
 121         emessageId   ,
 122         eMessagePath ,
 123         eTimestamp   ,
 124         eAuthor      ,
 125         erFc822Addr  ,
 126         eOriginalRoom,
 127         eNodeName    ,
 128         eHumanNode   ,
 129         eRecipient   ,
 130         eDestination ,
 131 /* Semi-important fields */
 132         eBig_message ,
 133         eRemoteRoom  ,
 134         eExclusiveID ,
 135         eWeferences  ,
 136         eJournal     ,
 137 /* G is not used yet, may become virus signature*/
 138         eReplyTo     ,
 139         eListID      ,
 140 /* Q is not used yet */
 141         eSpecialField,
 142         eenVelopeTo  ,
 143 /* X is not used yet */
 144 /* Z is not used yet */
 145         eCarbonCopY  ,
 146         eMsgSubject  ,
 147 /* internal only */
 148         eErrorMsg    ,
 149         eSuppressIdx ,
 150         eExtnotify   ,
 151 /* Message text (MUST be last) */
 152         eMesageText
 153 /* Not saved to disk:
 154         eVltMsgNum
 155 */
 156 };
 157
 158 static const long NDiskFields = sizeof(FieldOrder) / sizeof(eMsgField);
 159
 160 int CM_IsEmpty(struct CtdlMessage *Msg, eMsgField which)
 161 {
 162         return !((Msg->cm_fields[which] != NULL) &&
 163                  (Msg->cm_fields[which][0] != '\0'));
 164 }
 165
 166 void CM_SetField(struct CtdlMessage *Msg, eMsgField which, const char *buf, long length)
 167 {
 168         if (Msg->cm_fields[which] != NULL)
 169                 free (Msg->cm_fields[which]);
 170         Msg->cm_fields[which] = malloc(length + 1);
 171         memcpy(Msg->cm_fields[which], buf, length);
 172         Msg->cm_fields[which][length] = '\0';
 173 }
 174
 175 void CM_SetFieldLONG(struct CtdlMessage *Msg, eMsgField which, long lvalue)
 176 {
 177         char buf[128];
 178         long len;
 179         len = snprintf(buf, sizeof(buf), "%ld", lvalue);
 180         CM_SetField(Msg, which, buf, len);
 181 }
 182 void CM_CutFieldAt(struct CtdlMessage *Msg, eMsgField WhichToCut, long maxlen)
 183 {
 184         if (Msg->cm_fields[WhichToCut] == NULL)
 185                 return;
 186
 187         if (strlen(Msg->cm_fields[WhichToCut]) > maxlen)
 188                 Msg->cm_fields[WhichToCut][maxlen] = '\0';
 189 }
 190
 191 void CM_FlushField(struct CtdlMessage *Msg, eMsgField which)
 192 {
 193         if (Msg->cm_fields[which] != NULL)
 194                 free (Msg->cm_fields[which]);
 195         Msg->cm_fields[which] = NULL;
 196 }
 197
 198 void CM_CopyField(struct CtdlMessage *Msg, eMsgField WhichToPutTo, eMsgField WhichtToCopy)
 199 {
 200         long len;
 201         if (Msg->cm_fields[WhichToPutTo] != NULL)
 202                 free (Msg->cm_fields[WhichToPutTo]);
 203
 204         if (Msg->cm_fields[WhichtToCopy] != NULL)
 205         {
 206                 len = strlen(Msg->cm_fields[WhichtToCopy]);
 207                 Msg->cm_fields[WhichToPutTo] = malloc(len + 1);
 208                 memcpy(Msg->cm_fields[WhichToPutTo], Msg->cm_fields[WhichToPutTo], len);
 209                 Msg->cm_fields[WhichToPutTo][len] = '\0';
 210         }
 211         else
 212                 Msg->cm_fields[WhichToPutTo] = NULL;
 213 }
 214
 215
 216 void CM_PrependToField(struct CtdlMessage *Msg, eMsgField which, const char *buf, long length)
 217 {
 218         if (Msg->cm_fields[which] != NULL) {
 219                 long oldmsgsize;
 220                 long newmsgsize;
 221                 char *new;
 222
 223                 oldmsgsize = strlen(Msg->cm_fields[which]) + 1;
 224                 newmsgsize = length + oldmsgsize;
 225
 226                 new = malloc(newmsgsize);
 227                 memcpy(new, buf, length);
 228                 memcpy(new + length, Msg->cm_fields[which], oldmsgsize);
 229                 free(Msg->cm_fields[which]);
 230                 Msg->cm_fields[which] = new;
 231         }
 232         else {
 233                 Msg->cm_fields[which] = malloc(length + 1);
 234                 memcpy(Msg->cm_fields[which], buf, length);
 235                 Msg->cm_fields[which][length] = '\0';
 236         }
 237 }
 238
 239 void CM_SetAsField(struct CtdlMessage *Msg, eMsgField which, char **buf, long length)
 240 {
 241         if (Msg->cm_fields[which] != NULL)
 242                 free (Msg->cm_fields[which]);
 243
 244         Msg->cm_fields[which] = *buf;
 245         *buf = NULL;
 246 }
 247
 248 void CM_SetAsFieldSB(struct CtdlMessage *Msg, eMsgField which, StrBuf **buf)
 249 {
 250         if (Msg->cm_fields[which] != NULL)
 251                 free (Msg->cm_fields[which]);
 252
 253         Msg->cm_fields[which] = SmashStrBuf(buf);
 254 }
 255
 256 void CM_GetAsField(struct CtdlMessage *Msg, eMsgField which, char **ret, long *retlen)
 257 {
 258         if (Msg->cm_fields[which] != NULL)
 259         {
 260                 *retlen = strlen(Msg->cm_fields[which]);
 261                 *ret = Msg->cm_fields[which];
 262                 Msg->cm_fields[which] = NULL;
 263         }
 264         else
 265         {
 266                 *ret = NULL;
 267                 *retlen = 0;
 268         }
 269 }
 270
 271 /*
 272  * Returns 1 if the supplied pointer points to a valid Citadel message.
 273  * If the pointer is NULL or the magic number check fails, returns 0.
 274  */
 275 int is_valid_message(struct CtdlMessage *msg) {
 276         if (msg == NULL)
 277                 return 0;
 278         if ((msg->cm_magic) != CTDLMESSAGE_MAGIC) {
 279                 struct CitContext *CCC = CC;
 280                 MSGM_syslog(LOG_WARNING, "is_valid_message() -- self-check failed\n");
 281                 return 0;
 282         }
 283         return 1;
 284 }
 285
 286 void CtdlFreeMessageContents(struct CtdlMessage *msg)
 287 {
 288         int i;
 289
 290         for (i = 0; i < 256; ++i)
 291                 if (msg->cm_fields[i] != NULL) {
 292                         free(msg->cm_fields[i]);
 293                 }
 294
 295         msg->cm_magic = 0;      /* just in case */
 296 }
 297 /*
 298  * 'Destructor' for struct CtdlMessage
 299  */
 300 void CtdlFreeMessage(struct CtdlMessage *msg)
 301 {
 302         if (is_valid_message(msg) == 0)
 303         {
 304                 if (msg != NULL) free (msg);
 305                 return;
 306         }
 307         CtdlFreeMessageContents(msg);
 308         free(msg);
 309 }
 310
 311 int DupCMField(eMsgField i, struct CtdlMessage *OrgMsg, struct CtdlMessage *NewMsg)
 312 {
 313         long len;
 314         len = strlen(OrgMsg->cm_fields[i]);
 315         NewMsg->cm_fields[i] = malloc(len + 1);
 316         if (NewMsg->cm_fields[i] == NULL)
 317                 return 0;
 318         memcpy(NewMsg->cm_fields[i], OrgMsg->cm_fields[i], len);
 319         NewMsg->cm_fields[i][len] = '\0';
 320         return 1;
 321 }
 322
 323 struct CtdlMessage * CtdlDuplicateMessage(struct CtdlMessage *OrgMsg)
 324 {
 325         int i;
 326         struct CtdlMessage *NewMsg;
 327
 328         if (is_valid_message(OrgMsg) == 0)
 329                 return NULL;
 330         NewMsg = (struct CtdlMessage *)malloc(sizeof(struct CtdlMessage));
 331         if (NewMsg == NULL)
 332                 return NULL;
 333
 334         memcpy(NewMsg, OrgMsg, sizeof(struct CtdlMessage));
 335
 336         memset(&NewMsg->cm_fields, 0, sizeof(char*) * 256);
 337
 338         for (i = 0; i < 256; ++i)
 339         {
 340                 if (OrgMsg->cm_fields[i] != NULL)
 341                 {
 342                         if (!DupCMField(i, OrgMsg, NewMsg))
 343                         {
 344                                 CtdlFreeMessage(NewMsg);
 345                                 return NULL;
 346                         }
 347                 }
 348         }
 349
 350         return NewMsg;
 351 }
 352
 353
 354
 355 /*
 356  * This function is self explanatory.
 357  * (What can I say, I'm in a weird mood today...)
 358  */
 359 void remove_any_whitespace_to_the_left_or_right_of_at_symbol(char *name)
 360 {
 361         int i;
 362
 363         for (i = 0; i < strlen(name); ++i) {
 364                 if (name[i] == '@') {
 365                         while (isspace(name[i - 1]) && i > 0) {
 366                                 strcpy(&name[i - 1], &name[i]);
 367                                 --i;
 368                         }
 369                         while (isspace(name[i + 1])) {
 370                                 strcpy(&name[i + 1], &name[i + 2]);
 371                         }
 372                 }
 373         }
 374 }
 375
 376
 377 /*
 378  * Aliasing for network mail.
 379  * (Error messages have been commented out, because this is a server.)
 380  */
 381 int alias(char *name)
 382 {                               /* process alias and routing info for mail */
 383         struct CitContext *CCC = CC;
 384         FILE *fp;
 385         int a, i;
 386         char aaa[SIZ], bbb[SIZ];
 387         char *ignetcfg = NULL;
 388         char *ignetmap = NULL;
 389         int at = 0;
 390         char node[64];
 391         char testnode[64];
 392         char buf[SIZ];
 393
 394         char original_name[256];
 395         safestrncpy(original_name, name, sizeof original_name);
 396
 397         striplt(name);
 398         remove_any_whitespace_to_the_left_or_right_of_at_symbol(name);
 399         stripallbut(name, '<', '>');
 400
 401         fp = fopen(file_mail_aliases, "r");
 402         if (fp == NULL) {
 403                 fp = fopen("/dev/null", "r");
 404         }
 405         if (fp == NULL) {
 406                 return (MES_ERROR);
 407         }
 408         strcpy(aaa, "");
 409         strcpy(bbb, "");
 410         while (fgets(aaa, sizeof aaa, fp) != NULL) {
 411                 while (isspace(name[0]))
 412                         strcpy(name, &name[1]);
 413                 aaa[strlen(aaa) - 1] = 0;
 414                 strcpy(bbb, "");
 415                 for (a = 0; a < strlen(aaa); ++a) {
 416                         if (aaa[a] == ',') {
 417                                 strcpy(bbb, &aaa[a + 1]);
 418                                 aaa[a] = 0;
 419                         }
 420                 }
 421                 if (!strcasecmp(name, aaa))
 422                         strcpy(name, bbb);
 423         }
 424         fclose(fp);
 425
 426         /* Hit the Global Address Book */
 427         if (CtdlDirectoryLookup(aaa, name, sizeof aaa) == 0) {
 428                 strcpy(name, aaa);
 429         }
 430
 431         if (strcasecmp(original_name, name)) {
 432                 MSG_syslog(LOG_INFO, "%s is being forwarded to %s\n", original_name, name);
 433         }
 434
 435         /* Change "user @ xxx" to "user" if xxx is an alias for this host */
 436         for (a=0; a<strlen(name); ++a) {
 437                 if (name[a] == '@') {
 438                         if (CtdlHostAlias(&name[a+1]) == hostalias_localhost) {
 439                                 name[a] = 0;
 440                                 MSG_syslog(LOG_INFO, "Changed to <%s>\n", name);
 441                         }
 442                 }
 443         }
 444
 445         /* determine local or remote type, see citadel.h */
 446         at = haschar(name, '@');
 447         if (at == 0) return(MES_LOCAL);         /* no @'s - local address */
 448         if (at > 1) return(MES_ERROR);          /* >1 @'s - invalid address */
 449         remove_any_whitespace_to_the_left_or_right_of_at_symbol(name);
 450
 451         /* figure out the delivery mode */
 452         extract_token(node, name, 1, '@', sizeof node);
 453
 454         /* If there are one or more dots in the nodename, we assume that it
 455          * is an FQDN and will attempt SMTP delivery to the Internet.
 456          */
 457         if (haschar(node, '.') > 0) {
 458                 return(MES_INTERNET);
 459         }
 460
 461         /* Otherwise we look in the IGnet maps for a valid Citadel node.
 462          * Try directly-connected nodes first...
 463          */
 464         ignetcfg = CtdlGetSysConfig(IGNETCFG);
 465         for (i=0; i<num_tokens(ignetcfg, '\n'); ++i) {
 466                 extract_token(buf, ignetcfg, i, '\n', sizeof buf);
 467                 extract_token(testnode, buf, 0, '|', sizeof testnode);
 468                 if (!strcasecmp(node, testnode)) {
 469                         free(ignetcfg);
 470                         return(MES_IGNET);
 471                 }
 472         }
 473         free(ignetcfg);
 474
 475         /*
 476          * Then try nodes that are two or more hops away.
 477          */
 478         ignetmap = CtdlGetSysConfig(IGNETMAP);
 479         for (i=0; i<num_tokens(ignetmap, '\n'); ++i) {
 480                 extract_token(buf, ignetmap, i, '\n', sizeof buf);
 481                 extract_token(testnode, buf, 0, '|', sizeof testnode);
 482                 if (!strcasecmp(node, testnode)) {
 483                         free(ignetmap);
 484                         return(MES_IGNET);
 485                 }
 486         }
 487         free(ignetmap);
 488
 489         /* If we get to this point it's an invalid node name */
 490         return (MES_ERROR);
 491 }
 492
 493
 494 /*
 495  * Back end for the MSGS command: output message number only.
 496  */
 497 void simple_listing(long msgnum, void *userdata)
 498 {
 499         cprintf("%ld\n", msgnum);
 500 }
 501
 502
 503
 504 /*
 505  * Back end for the MSGS command: output header summary.
 506  */
 507 void headers_listing(long msgnum, void *userdata)
 508 {
 509         struct CtdlMessage *msg;
 510
 511         msg = CtdlFetchMessage(msgnum, 0);
 512         if (msg == NULL) {
 513                 cprintf("%ld|0|||||\n", msgnum);
 514                 return;
 515         }
 516
 517         cprintf("%ld|%s|%s|%s|%s|%s|\n",
 518                 msgnum,
 519                 (!CM_IsEmpty(msg, eTimestamp) ? msg->cm_fields[eTimestamp] : "0"),
 520                 (!CM_IsEmpty(msg, eAuthor) ? msg->cm_fields[eAuthor] : ""),
 521                 (!CM_IsEmpty(msg, eNodeName) ? msg->cm_fields[eNodeName] : ""),
 522                 (!CM_IsEmpty(msg, erFc822Addr) ? msg->cm_fields[erFc822Addr] : ""),
 523                 (!CM_IsEmpty(msg, eMsgSubject) ? msg->cm_fields[eMsgSubject] : "")
 524         );
 525         CtdlFreeMessage(msg);
 526 }
 527
 528 /*
 529  * Back end for the MSGS command: output EUID header.
 530  */
 531 void headers_euid(long msgnum, void *userdata)
 532 {
 533         struct CtdlMessage *msg;
 534
 535         msg = CtdlFetchMessage(msgnum, 0);
 536         if (msg == NULL) {
 537                 cprintf("%ld||\n", msgnum);
 538                 return;
 539         }
 540
 541         cprintf("%ld|%s|%s\n",
 542                 msgnum,
 543                 (!CM_IsEmpty(msg, eExclusiveID) ? msg->cm_fields[eExclusiveID] : ""),
 544                 (!CM_IsEmpty(msg, eTimestamp) ? msg->cm_fields[eTimestamp] : "0"));
 545         CtdlFreeMessage(msg);
 546 }
 547
 548
 549
 550
 551
 552 /* Determine if a given message matches the fields in a message template.
 553  * Return 0 for a successful match.
 554  */
 555 int CtdlMsgCmp(struct CtdlMessage *msg, struct CtdlMessage *template) {
 556         int i;
 557
 558         /* If there aren't any fields in the template, all messages will
 559          * match.
 560          */
 561         if (template == NULL) return(0);
 562
 563         /* Null messages are bogus. */
 564         if (msg == NULL) return(1);
 565
 566         for (i='A'; i<='Z'; ++i) {
 567                 if (template->cm_fields[i] != NULL) {
 568                         if (msg->cm_fields[i] == NULL) {
 569                                 /* Considered equal if temmplate is empty string */
 570                                 if (IsEmptyStr(template->cm_fields[i])) continue;
 571                                 return 1;
 572                         }
 573                         if (strcasecmp(msg->cm_fields[i],
 574                                 template->cm_fields[i])) return 1;
 575                 }
 576         }
 577
 578         /* All compares succeeded: we have a match! */
 579         return 0;
 580 }
 581
 582
 583
 584 /*
 585  * Retrieve the "seen" message list for the current room.
 586  */
 587 void CtdlGetSeen(char *buf, int which_set) {
 588         struct CitContext *CCC = CC;
 589         visit vbuf;
 590
 591         /* Learn about the user and room in question */
 592         CtdlGetRelationship(&vbuf, &CCC->user, &CCC->room);
 593
 594         if (which_set == ctdlsetseen_seen)
 595                 safestrncpy(buf, vbuf.v_seen, SIZ);
 596         if (which_set == ctdlsetseen_answered)
 597                 safestrncpy(buf, vbuf.v_answered, SIZ);
 598 }
 599
 600
 601
 602 /*
 603  * Manipulate the "seen msgs" string (or other message set strings)
 604  */
 605 void CtdlSetSeen(long *target_msgnums, int num_target_msgnums,
 606                 int target_setting, int which_set,
 607                 struct ctdluser *which_user, struct ctdlroom *which_room) {
 608         struct CitContext *CCC = CC;
 609         struct cdbdata *cdbfr;
 610         int i, k;
 611         int is_seen = 0;
 612         int was_seen = 0;
 613         long lo = (-1L);
 614         long hi = (-1L); /// TODO: we just write here. y?
 615         visit vbuf;
 616         long *msglist;
 617         int num_msgs = 0;
 618         StrBuf *vset;
 619         StrBuf *setstr;
 620         StrBuf *lostr;
 621         StrBuf *histr;
 622         const char *pvset;
 623         char *is_set;   /* actually an array of booleans */
 624
 625         /* Don't bother doing *anything* if we were passed a list of zero messages */
 626         if (num_target_msgnums < 1) {
 627                 return;
 628         }
 629
 630         /* If no room was specified, we go with the current room. */
 631         if (!which_room) {
 632                 which_room = &CCC->room;
 633         }
 634
 635         /* If no user was specified, we go with the current user. */
 636         if (!which_user) {
 637                 which_user = &CCC->user;
 638         }
 639
 640         MSG_syslog(LOG_DEBUG, "CtdlSetSeen(%d msgs starting with %ld, %s, %d) in <%s>\n",
 641                    num_target_msgnums, target_msgnums[0],
 642                    (target_setting ? "SET" : "CLEAR"),
 643                    which_set,
 644                    which_room->QRname);
 645
 646         /* Learn about the user and room in question */
 647         CtdlGetRelationship(&vbuf, which_user, which_room);
 648
 649         /* Load the message list */
 650         cdbfr = cdb_fetch(CDB_MSGLISTS, &which_room->QRnumber, sizeof(long));
 651         if (cdbfr != NULL) {
 652                 msglist = (long *) cdbfr->ptr;
 653                 cdbfr->ptr = NULL;      /* CtdlSetSeen() now owns this memory */
 654                 num_msgs = cdbfr->len / sizeof(long);
 655                 cdb_free(cdbfr);
 656         } else {
 657                 return; /* No messages at all?  No further action. */
 658         }
 659
 660         is_set = malloc(num_msgs * sizeof(char));
 661         memset(is_set, 0, (num_msgs * sizeof(char)) );
 662
 663         /* Decide which message set we're manipulating */
 664         switch(which_set) {
 665         case ctdlsetseen_seen:
 666                 vset = NewStrBufPlain(vbuf.v_seen, -1);
 667                 break;
 668         case ctdlsetseen_answered:
 669                 vset = NewStrBufPlain(vbuf.v_answered, -1);
 670                 break;
 671         default:
 672                 vset = NewStrBuf();
 673         }
 674
 675
 676 #if 0   /* This is a special diagnostic section.  Do not allow it to run during normal operation. */
 677         MSG_syslog(LOG_DEBUG, "There are %d messages in the room.\n", num_msgs);
 678         for (i=0; i<num_msgs; ++i) {
 679                 if ((i > 0) && (msglist[i] <= msglist[i-1])) abort();
 680         }
 681         MSG_syslog(LOG_DEBUG, "We are twiddling %d of them.\n", num_target_msgnums);
 682         for (k=0; k<num_target_msgnums; ++k) {
 683                 if ((k > 0) && (target_msgnums[k] <= target_msgnums[k-1])) abort();
 684         }
 685 #endif
 686
 687         MSG_syslog(LOG_DEBUG, "before update: %s\n", ChrPtr(vset));
 688
 689         /* Translate the existing sequence set into an array of booleans */
 690         setstr = NewStrBuf();
 691         lostr = NewStrBuf();
 692         histr = NewStrBuf();
 693         pvset = NULL;
 694         while (StrBufExtract_NextToken(setstr, vset, &pvset, ',') >= 0) {
 695
 696                 StrBufExtract_token(lostr, setstr, 0, ':');
 697                 if (StrBufNum_tokens(setstr, ':') >= 2) {
 698                         StrBufExtract_token(histr, setstr, 1, ':');
 699                 }
 700                 else {
 701                         FlushStrBuf(histr);
 702                         StrBufAppendBuf(histr, lostr, 0);
 703                 }
 704                 lo = StrTol(lostr);
 705                 if (!strcmp(ChrPtr(histr), "*")) {
 706                         hi = LONG_MAX;
 707                 }
 708                 else {
 709                         hi = StrTol(histr);
 710                 }
 711
 712                 for (i = 0; i < num_msgs; ++i) {
 713                         if ((msglist[i] >= lo) && (msglist[i] <= hi)) {
 714                                 is_set[i] = 1;
 715                         }
 716                 }
 717         }
 718         FreeStrBuf(&setstr);
 719         FreeStrBuf(&lostr);
 720         FreeStrBuf(&histr);
 721
 722
 723         /* Now translate the array of booleans back into a sequence set */
 724         FlushStrBuf(vset);
 725         was_seen = 0;
 726         lo = (-1);
 727         hi = (-1);
 728
 729         for (i=0; i<num_msgs; ++i) {
 730                 is_seen = is_set[i];
 731
 732                 /* Apply changes */
 733                 for (k=0; k<num_target_msgnums; ++k) {
 734                         if (msglist[i] == target_msgnums[k]) {
 735                                 is_seen = target_setting;
 736                         }
 737                 }
 738
 739                 if ((was_seen == 0) && (is_seen == 1)) {
 740                         lo = msglist[i];
 741                 }
 742                 else if ((was_seen == 1) && (is_seen == 0)) {
 743                         hi = msglist[i-1];
 744
 745                         if (StrLength(vset) > 0) {
 746                                 StrBufAppendBufPlain(vset, HKEY(","), 0);
 747                         }
 748                         if (lo == hi) {
 749                                 StrBufAppendPrintf(vset, "%ld", hi);
 750                         }
 751                         else {
 752                                 StrBufAppendPrintf(vset, "%ld:%ld", lo, hi);
 753                         }
 754                 }
 755
 756                 if ((is_seen) && (i == num_msgs - 1)) {
 757                         if (StrLength(vset) > 0) {
 758                                 StrBufAppendBufPlain(vset, HKEY(","), 0);
 759                         }
 760                         if ((i==0) || (was_seen == 0)) {
 761                                 StrBufAppendPrintf(vset, "%ld", msglist[i]);
 762                         }
 763                         else {
 764                                 StrBufAppendPrintf(vset, "%ld:%ld", lo, msglist[i]);
 765                         }
 766                 }
 767
 768                 was_seen = is_seen;
 769         }
 770
 771         /*
 772          * We will have to stuff this string back into a 4096 byte buffer, so if it's
 773          * larger than that now, truncate it by removing tokens from the beginning.
 774          * The limit of 100 iterations is there to prevent an infinite loop in case
 775          * something unexpected happens.
 776          */
 777         int number_of_truncations = 0;
 778         while ( (StrLength(vset) > SIZ) && (number_of_truncations < 100) ) {
 779                 StrBufRemove_token(vset, 0, ',');
 780                 ++number_of_truncations;
 781         }
 782
 783         /*
 784          * If we're truncating the sequence set of messages marked with the 'seen' flag,
 785          * we want the earliest messages (the truncated ones) to be marked, not unmarked.
 786          * Otherwise messages at the beginning will suddenly appear to be 'unseen'.
 787          */
 788         if ( (which_set == ctdlsetseen_seen) && (number_of_truncations > 0) ) {
 789                 StrBuf *first_tok;
 790                 first_tok = NewStrBuf();
 791                 StrBufExtract_token(first_tok, vset, 0, ',');
 792                 StrBufRemove_token(vset, 0, ',');
 793
 794                 if (StrBufNum_tokens(first_tok, ':') > 1) {
 795                         StrBufRemove_token(first_tok, 0, ':');
 796                 }
 797
 798                 StrBuf *new_set;
 799                 new_set = NewStrBuf();
 800                 StrBufAppendBufPlain(new_set, HKEY("1:"), 0);
 801                 StrBufAppendBuf(new_set, first_tok, 0);
 802                 StrBufAppendBufPlain(new_set, HKEY(":"), 0);
 803                 StrBufAppendBuf(new_set, vset, 0);
 804
 805                 FreeStrBuf(&vset);
 806                 FreeStrBuf(&first_tok);
 807                 vset = new_set;
 808         }
 809
 810         MSG_syslog(LOG_DEBUG, " after update: %s\n", ChrPtr(vset));
 811
 812         /* Decide which message set we're manipulating */
 813         switch (which_set) {
 814                 case ctdlsetseen_seen:
 815                         safestrncpy(vbuf.v_seen, ChrPtr(vset), sizeof vbuf.v_seen);
 816                         break;
 817                 case ctdlsetseen_answered:
 818                         safestrncpy(vbuf.v_answered, ChrPtr(vset), sizeof vbuf.v_answered);
 819                         break;
 820         }
 821
 822         free(is_set);
 823         free(msglist);
 824         CtdlSetRelationship(&vbuf, which_user, which_room);
 825         FreeStrBuf(&vset);
 826 }
 827
 828
 829 /*
 830  * API function to perform an operation for each qualifying message in the
 831  * current room.  (Returns the number of messages processed.)
 832  */
 833 int CtdlForEachMessage(int mode, long ref, char *search_string,
 834                         char *content_type,
 835                         struct CtdlMessage *compare,
 836                         ForEachMsgCallback CallBack,
 837                         void *userdata)
 838 {
 839         struct CitContext *CCC = CC;
 840         int a, i, j;
 841         visit vbuf;
 842         struct cdbdata *cdbfr;
 843         long *msglist = NULL;
 844         int num_msgs = 0;
 845         int num_processed = 0;
 846         long thismsg;
 847         struct MetaData smi;
 848         struct CtdlMessage *msg = NULL;
 849         int is_seen = 0;
 850         long lastold = 0L;
 851         int printed_lastold = 0;
 852         int num_search_msgs = 0;
 853         long *search_msgs = NULL;
 854         regex_t re;
 855         int need_to_free_re = 0;
 856         regmatch_t pm;
 857
 858         if ((content_type) && (!IsEmptyStr(content_type))) {
 859                 regcomp(&re, content_type, 0);
 860                 need_to_free_re = 1;
 861         }
 862
 863         /* Learn about the user and room in question */
 864         if (server_shutting_down) {
 865                 if (need_to_free_re) regfree(&re);
 866                 return -1;
 867         }
 868         CtdlGetUser(&CCC->user, CCC->curr_user);
 869
 870         if (server_shutting_down) {
 871                 if (need_to_free_re) regfree(&re);
 872                 return -1;
 873         }
 874         CtdlGetRelationship(&vbuf, &CCC->user, &CCC->room);
 875
 876         if (server_shutting_down) {
 877                 if (need_to_free_re) regfree(&re);
 878                 return -1;
 879         }
 880
 881         /* Load the message list */
 882         cdbfr = cdb_fetch(CDB_MSGLISTS, &CCC->room.QRnumber, sizeof(long));
 883         if (cdbfr == NULL) {
 884                 if (need_to_free_re) regfree(&re);
 885                 return 0;       /* No messages at all?  No further action. */
 886         }
 887
 888         msglist = (long *) cdbfr->ptr;
 889         num_msgs = cdbfr->len / sizeof(long);
 890
 891         cdbfr->ptr = NULL;      /* clear this so that cdb_free() doesn't free it */
 892         cdb_free(cdbfr);        /* we own this memory now */
 893
 894         /*
 895          * Now begin the traversal.
 896          */
 897         if (num_msgs > 0) for (a = 0; a < num_msgs; ++a) {
 898
 899                 /* If the caller is looking for a specific MIME type, filter
 900                  * out all messages which are not of the type requested.
 901                  */
 902                 if ((content_type != NULL) && (!IsEmptyStr(content_type))) {
 903
 904                         /* This call to GetMetaData() sits inside this loop
 905                          * so that we only do the extra database read per msg
 906                          * if we need to.  Doing the extra read all the time
 907                          * really kills the server.  If we ever need to use
 908                          * metadata for another search criterion, we need to
 909                          * move the read somewhere else -- but still be smart
 910                          * enough to only do the read if the caller has
 911                          * specified something that will need it.
 912                          */
 913                         if (server_shutting_down) {
 914                                 if (need_to_free_re) regfree(&re);
 915                                 free(msglist);
 916                                 return -1;
 917                         }
 918                         GetMetaData(&smi, msglist[a]);
 919
 920                         /* if (strcasecmp(smi.meta_content_type, content_type)) { old non-regex way */
 921                         if (regexec(&re, smi.meta_content_type, 1, &pm, 0) != 0) {
 922                                 msglist[a] = 0L;
 923                         }
 924                 }
 925         }
 926
 927         num_msgs = sort_msglist(msglist, num_msgs);
 928
 929         /* If a template was supplied, filter out the messages which
 930          * don't match.  (This could induce some delays!)
 931          */
 932         if (num_msgs > 0) {
 933                 if (compare != NULL) {
 934                         for (a = 0; a < num_msgs; ++a) {
 935                                 if (server_shutting_down) {
 936                                         if (need_to_free_re) regfree(&re);
 937                                         free(msglist);
 938                                         return -1;
 939                                 }
 940                                 msg = CtdlFetchMessage(msglist[a], 1);
 941                                 if (msg != NULL) {
 942                                         if (CtdlMsgCmp(msg, compare)) {
 943                                                 msglist[a] = 0L;
 944                                         }
 945                                         CtdlFreeMessage(msg);
 946                                 }
 947                         }
 948                 }
 949         }
 950
 951         /* If a search string was specified, get a message list from
 952          * the full text index and remove messages which aren't on both
 953          * lists.
 954          *
 955          * How this works:
 956          * Since the lists are sorted and strictly ascending, and the
 957          * output list is guaranteed to be shorter than or equal to the
 958          * input list, we overwrite the bottom of the input list.  This
 959          * eliminates the need to memmove big chunks of the list over and
 960          * over again.
 961          */
 962         if ( (num_msgs > 0) && (mode == MSGS_SEARCH) && (search_string) ) {
 963
 964                 /* Call search module via hook mechanism.
 965                  * NULL means use any search function available.
 966                  * otherwise replace with a char * to name of search routine
 967                  */
 968                 CtdlModuleDoSearch(&num_search_msgs, &search_msgs, search_string, "fulltext");
 969
 970                 if (num_search_msgs > 0) {
 971
 972                         int orig_num_msgs;
 973
 974                         orig_num_msgs = num_msgs;
 975                         num_msgs = 0;
 976                         for (i=0; i<orig_num_msgs; ++i) {
 977                                 for (j=0; j<num_search_msgs; ++j) {
 978                                         if (msglist[i] == search_msgs[j]) {
 979                                                 msglist[num_msgs++] = msglist[i];
 980                                         }
 981                                 }
 982                         }
 983                 }
 984                 else {
 985                         num_msgs = 0;   /* No messages qualify */
 986                 }
 987                 if (search_msgs != NULL) free(search_msgs);
 988
 989                 /* Now that we've purged messages which don't contain the search
 990                  * string, treat a MSGS_SEARCH just like a MSGS_ALL from this
 991                  * point on.
 992                  */
 993                 mode = MSGS_ALL;
 994         }
 995
 996         /*
 997          * Now iterate through the message list, according to the
 998          * criteria supplied by the caller.
 999          */
1000         if (num_msgs > 0)
1001                 for (a = 0; a < num_msgs; ++a) {
1002                         if (server_shutting_down) {
1003                                 if (need_to_free_re) regfree(&re);
1004                                 free(msglist);
1005                                 return num_processed;
1006                         }
1007                         thismsg = msglist[a];
1008                         if (mode == MSGS_ALL) {
1009                                 is_seen = 0;
1010                         }
1011                         else {
1012                                 is_seen = is_msg_in_sequence_set(
1013                                                         vbuf.v_seen, thismsg);
1014                                 if (is_seen) lastold = thismsg;
1015                         }
1016                         if ((thismsg > 0L)
1017                             && (
1018
1019                                        (mode == MSGS_ALL)
1020                                        || ((mode == MSGS_OLD) && (is_seen))
1021                                        || ((mode == MSGS_NEW) && (!is_seen))
1022                                        || ((mode == MSGS_LAST) && (a >= (num_msgs - ref)))
1023                                    || ((mode == MSGS_FIRST) && (a < ref))
1024                                 || ((mode == MSGS_GT) && (thismsg > ref))
1025                                 || ((mode == MSGS_LT) && (thismsg < ref))
1026                                 || ((mode == MSGS_EQ) && (thismsg == ref))
1027                             )
1028                             ) {
1029                                 if ((mode == MSGS_NEW) && (CCC->user.flags & US_LASTOLD) && (lastold > 0L) && (printed_lastold == 0) && (!is_seen)) {
1030                                         if (CallBack)
1031                                                 CallBack(lastold, userdata);
1032                                         printed_lastold = 1;
1033                                         ++num_processed;
1034                                 }
1035                                 if (CallBack) CallBack(thismsg, userdata);
1036                                 ++num_processed;
1037                         }
1038                 }
1039         if (need_to_free_re) regfree(&re);
1040
1041         /*
1042          * We cache the most recent msglist in order to do security checks later
1043          */
1044         if (CCC->client_socket > 0) {
1045                 if (CCC->cached_msglist != NULL) {
1046                         free(CCC->cached_msglist);
1047                 }
1048                 CCC->cached_msglist = msglist;
1049                 CCC->cached_num_msgs = num_msgs;
1050         }
1051         else {
1052                 free(msglist);
1053         }
1054
1055         return num_processed;
1056 }
1057
1058
1059
1060 /*
1061  * cmd_msgs()  -  get list of message #'s in this room
1062  *              implements the MSGS server command using CtdlForEachMessage()
1063  */
1064 void cmd_msgs(char *cmdbuf)
1065 {
1066         int mode = 0;
1067         char which[16];
1068         char buf[256];
1069         char tfield[256];
1070         char tvalue[256];
1071         int cm_ref = 0;
1072         int i;
1073         int with_template = 0;
1074         struct CtdlMessage *template = NULL;
1075         char search_string[1024];
1076         ForEachMsgCallback CallBack;
1077
1078         if (CtdlAccessCheck(ac_logged_in_or_guest)) return;
1079
1080         extract_token(which, cmdbuf, 0, '|', sizeof which);
1081         cm_ref = extract_int(cmdbuf, 1);
1082         extract_token(search_string, cmdbuf, 1, '|', sizeof search_string);
1083         with_template = extract_int(cmdbuf, 2);
1084         switch (extract_int(cmdbuf, 3))
1085         {
1086         default:
1087         case MSG_HDRS_BRIEF:
1088                 CallBack = simple_listing;
1089                 break;
1090         case MSG_HDRS_ALL:
1091                 CallBack = headers_listing;
1092                 break;
1093         case MSG_HDRS_EUID:
1094                 CallBack = headers_euid;
1095                 break;
1096         }
1097
1098         strcat(which, "   ");
1099         if (!strncasecmp(which, "OLD", 3))
1100                 mode = MSGS_OLD;
1101         else if (!strncasecmp(which, "NEW", 3))
1102                 mode = MSGS_NEW;
1103         else if (!strncasecmp(which, "FIRST", 5))
1104                 mode = MSGS_FIRST;
1105         else if (!strncasecmp(which, "LAST", 4))
1106                 mode = MSGS_LAST;
1107         else if (!strncasecmp(which, "GT", 2))
1108                 mode = MSGS_GT;
1109         else if (!strncasecmp(which, "LT", 2))
1110                 mode = MSGS_LT;
1111         else if (!strncasecmp(which, "SEARCH", 6))
1112                 mode = MSGS_SEARCH;
1113         else
1114                 mode = MSGS_ALL;
1115
1116         if ( (mode == MSGS_SEARCH) && (!config.c_enable_fulltext) ) {
1117                 cprintf("%d Full text index is not enabled on this server.\n",
1118                         ERROR + CMD_NOT_SUPPORTED);
1119                 return;
1120         }
1121
1122         if (with_template) {
1123                 unbuffer_output();
1124                 cprintf("%d Send template then receive message list\n",
1125                         START_CHAT_MODE);
1126                 template = (struct CtdlMessage *)
1127                         malloc(sizeof(struct CtdlMessage));
1128                 memset(template, 0, sizeof(struct CtdlMessage));
1129                 template->cm_magic = CTDLMESSAGE_MAGIC;
1130                 template->cm_anon_type = MES_NORMAL;
1131
1132                 while(client_getln(buf, sizeof buf) >= 0 && strcmp(buf,"000")) {
1133                         long tValueLen;
1134                         extract_token(tfield, buf, 0, '|', sizeof tfield);
1135                         tValueLen = extract_token(tvalue, buf, 1, '|', sizeof tvalue);
1136                         for (i='A'; i<='Z'; ++i) if (msgkeys[i]!=NULL) {
1137                                 if (!strcasecmp(tfield, msgkeys[i])) {
1138                                         CM_SetField(template, i, tvalue, tValueLen);
1139                                 }
1140                         }
1141                 }
1142                 buffer_output();
1143         }
1144         else {
1145                 cprintf("%d  \n", LISTING_FOLLOWS);
1146         }
1147
1148         CtdlForEachMessage(mode,
1149                            ( (mode == MSGS_SEARCH) ? 0 : cm_ref ),
1150                            ( (mode == MSGS_SEARCH) ? search_string : NULL ),
1151                            NULL,
1152                            template,
1153                            CallBack,
1154                            NULL);
1155         if (template != NULL) CtdlFreeMessage(template);
1156         cprintf("000\n");
1157 }
1158
1159
1160
1161
1162 /*
1163  * help_subst()  -  support routine for help file viewer
1164  */
1165 void help_subst(char *strbuf, char *source, char *dest)
1166 {
1167         char workbuf[SIZ];
1168         int p;
1169
1170         while (p = pattern2(strbuf, source), (p >= 0)) {
1171                 strcpy(workbuf, &strbuf[p + strlen(source)]);
1172                 strcpy(&strbuf[p], dest);
1173                 strcat(strbuf, workbuf);
1174         }
1175 }
1176
1177
1178 void do_help_subst(char *buffer)
1179 {
1180         char buf2[16];
1181
1182         help_subst(buffer, "^nodename", config.c_nodename);
1183         help_subst(buffer, "^humannode", config.c_humannode);
1184         help_subst(buffer, "^fqdn", config.c_fqdn);
1185         help_subst(buffer, "^username", CC->user.fullname);
1186         snprintf(buf2, sizeof buf2, "%ld", CC->user.usernum);
1187         help_subst(buffer, "^usernum", buf2);
1188         help_subst(buffer, "^sysadm", config.c_sysadm);
1189         help_subst(buffer, "^variantname", CITADEL);
1190         snprintf(buf2, sizeof buf2, "%d", config.c_maxsessions);
1191         help_subst(buffer, "^maxsessions", buf2);
1192         help_subst(buffer, "^bbsdir", ctdl_message_dir);
1193 }
1194
1195
1196
1197 /*
1198  * memfmout()  -  Citadel text formatter and paginator.
1199  *           Although the original purpose of this routine was to format
1200  *           text to the reader's screen width, all we're really using it
1201  *           for here is to format text out to 80 columns before sending it
1202  *           to the client.  The client software may reformat it again.
1203  */
1204 void memfmout(
1205         char *mptr,             /* where are we going to get our text from? */
1206         const char *nl          /* string to terminate lines with */
1207 ) {
1208         struct CitContext *CCC = CC;
1209         int column = 0;
1210         unsigned char ch = 0;
1211         char outbuf[1024];
1212         int len = 0;
1213         int nllen = 0;
1214
1215         if (!mptr) return;
1216         nllen = strlen(nl);
1217         while (ch=*(mptr++), ch != 0) {
1218
1219                 if (ch == '\n') {
1220                         if (client_write(outbuf, len) == -1)
1221                         {
1222                                 MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1223                                 return;
1224                         }
1225                         len = 0;
1226                         if (client_write(nl, nllen) == -1)
1227                         {
1228                                 MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1229                                 return;
1230                         }
1231                         column = 0;
1232                 }
1233                 else if (ch == '\r') {
1234                         /* Ignore carriage returns.  Newlines are always LF or CRLF but never CR. */
1235                 }
1236                 else if (isspace(ch)) {
1237                         if (column > 72) {              /* Beyond 72 columns, break on the next space */
1238                                 if (client_write(outbuf, len) == -1)
1239                                 {
1240                                         MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1241                                         return;
1242                                 }
1243                                 len = 0;
1244                                 if (client_write(nl, nllen) == -1)
1245                                 {
1246                                         MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1247                                         return;
1248                                 }
1249                                 column = 0;
1250                         }
1251                         else {
1252                                 outbuf[len++] = ch;
1253                                 ++column;
1254                         }
1255                 }
1256                 else {
1257                         outbuf[len++] = ch;
1258                         ++column;
1259                         if (column > 1000) {            /* Beyond 1000 columns, break anywhere */
1260                                 if (client_write(outbuf, len) == -1)
1261                                 {
1262                                         MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1263                                         return;
1264                                 }
1265                                 len = 0;
1266                                 if (client_write(nl, nllen) == -1)
1267                                 {
1268                                         MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1269                                         return;
1270                                 }
1271                                 column = 0;
1272                         }
1273                 }
1274         }
1275         if (len) {
1276                 if (client_write(outbuf, len) == -1)
1277                 {
1278                         MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1279                         return;
1280                 }
1281                 len = 0;
1282                 client_write(nl, nllen);
1283                 column = 0;
1284         }
1285 }
1286
1287
1288
1289 /*
1290  * Callback function for mime parser that simply lists the part
1291  */
1292 void list_this_part(char *name, char *filename, char *partnum, char *disp,
1293                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1294                     char *cbid, void *cbuserdata)
1295 {
1296         struct ma_info *ma;
1297
1298         ma = (struct ma_info *)cbuserdata;
1299         if (ma->is_ma == 0) {
1300                 cprintf("part=%s|%s|%s|%s|%s|%ld|%s|%s\n",
1301                         name,
1302                         filename,
1303                         partnum,
1304                         disp,
1305                         cbtype,
1306                         (long)length,
1307                         cbid,
1308                         cbcharset);
1309         }
1310 }
1311
1312 /*
1313  * Callback function for multipart prefix
1314  */
1315 void list_this_pref(char *name, char *filename, char *partnum, char *disp,
1316                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1317                     char *cbid, void *cbuserdata)
1318 {
1319         struct ma_info *ma;
1320
1321         ma = (struct ma_info *)cbuserdata;
1322         if (!strcasecmp(cbtype, "multipart/alternative")) {
1323                 ++ma->is_ma;
1324         }
1325
1326         if (ma->is_ma == 0) {
1327                 cprintf("pref=%s|%s\n", partnum, cbtype);
1328         }
1329 }
1330
1331 /*
1332  * Callback function for multipart sufffix
1333  */
1334 void list_this_suff(char *name, char *filename, char *partnum, char *disp,
1335                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1336                     char *cbid, void *cbuserdata)
1337 {
1338         struct ma_info *ma;
1339
1340         ma = (struct ma_info *)cbuserdata;
1341         if (ma->is_ma == 0) {
1342                 cprintf("suff=%s|%s\n", partnum, cbtype);
1343         }
1344         if (!strcasecmp(cbtype, "multipart/alternative")) {
1345                 --ma->is_ma;
1346         }
1347 }
1348
1349
1350 /*
1351  * Callback function for mime parser that opens a section for downloading
1352  */
1353 void mime_download(char *name, char *filename, char *partnum, char *disp,
1354                    void *content, char *cbtype, char *cbcharset, size_t length,
1355                    char *encoding, char *cbid, void *cbuserdata)
1356 {
1357         int rv = 0;
1358         CitContext *CCC = MyContext();
1359
1360         /* Silently go away if there's already a download open. */
1361         if (CCC->download_fp != NULL)
1362                 return;
1363
1364         if (
1365                 (!IsEmptyStr(partnum) && (!strcasecmp(CCC->download_desired_section, partnum)))
1366         ||      (!IsEmptyStr(cbid) && (!strcasecmp(CCC->download_desired_section, cbid)))
1367         ) {
1368                 CCC->download_fp = tmpfile();
1369                 if (CCC->download_fp == NULL) {
1370                         MSG_syslog(LOG_EMERG, "mime_download(): Couldn't write: %s\n",
1371                                     strerror(errno));
1372                         cprintf("%d cannot open temporary file: %s\n",
1373                                 ERROR + INTERNAL_ERROR, strerror(errno));
1374                         return;
1375                 }
1376
1377                 rv = fwrite(content, length, 1, CCC->download_fp);
1378                 if (rv <= 0) {
1379                         MSG_syslog(LOG_EMERG, "mime_download(): Couldn't write: %s\n",
1380                                    strerror(errno));
1381                         cprintf("%d unable to write tempfile.\n",
1382                                 ERROR + TOO_BIG);
1383                         fclose(CCC->download_fp);
1384                         CCC->download_fp = NULL;
1385                         return;
1386                 }
1387                 fflush(CCC->download_fp);
1388                 rewind(CCC->download_fp);
1389
1390                 OpenCmdResult(filename, cbtype);
1391         }
1392 }
1393
1394
1395
1396 /*
1397  * Callback function for mime parser that outputs a section all at once.
1398  * We can specify the desired section by part number *or* content-id.
1399  */
1400 void mime_spew_section(char *name, char *filename, char *partnum, char *disp,
1401                    void *content, char *cbtype, char *cbcharset, size_t length,
1402                    char *encoding, char *cbid, void *cbuserdata)
1403 {
1404         int *found_it = (int *)cbuserdata;
1405
1406         if (
1407                 (!IsEmptyStr(partnum) && (!strcasecmp(CC->download_desired_section, partnum)))
1408         ||      (!IsEmptyStr(cbid) && (!strcasecmp(CC->download_desired_section, cbid)))
1409         ) {
1410                 *found_it = 1;
1411                 cprintf("%d %d|-1|%s|%s|%s\n",
1412                         BINARY_FOLLOWS,
1413                         (int)length,
1414                         filename,
1415                         cbtype,
1416                         cbcharset
1417                 );
1418                 client_write(content, length);
1419         }
1420 }
1421
1422
1423 /*
1424  * Load a message from disk into memory.
1425  * This is used by CtdlOutputMsg() and other fetch functions.
1426  *
1427  * NOTE: Caller is responsible for freeing the returned CtdlMessage struct
1428  *       using the CtdlMessageFree() function.
1429  */
1430 struct CtdlMessage *CtdlFetchMessage(long msgnum, int with_body)
1431 {
1432         struct CitContext *CCC = CC;
1433         struct cdbdata *dmsgtext;
1434         struct CtdlMessage *ret = NULL;
1435         char *mptr;
1436         char *upper_bound;
1437         cit_uint8_t ch;
1438         cit_uint8_t field_header;
1439
1440         MSG_syslog(LOG_DEBUG, "CtdlFetchMessage(%ld, %d)\n", msgnum, with_body);
1441         dmsgtext = cdb_fetch(CDB_MSGMAIN, &msgnum, sizeof(long));
1442         if (dmsgtext == NULL) {
1443                 MSG_syslog(LOG_ERR, "CtdlFetchMessage(%ld, %d) Failed!\n", msgnum, with_body);
1444                 return NULL;
1445         }
1446         mptr = dmsgtext->ptr;
1447         upper_bound = mptr + dmsgtext->len;
1448
1449         /* Parse the three bytes that begin EVERY message on disk.
1450          * The first is always 0xFF, the on-disk magic number.
1451          * The second is the anonymous/public type byte.
1452          * The third is the format type byte (vari, fixed, or MIME).
1453          */
1454         ch = *mptr++;
1455         if (ch != 255) {
1456                 MSG_syslog(LOG_ERR, "Message %ld appears to be corrupted.\n", msgnum);
1457                 cdb_free(dmsgtext);
1458                 return NULL;
1459         }
1460         ret = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
1461         memset(ret, 0, sizeof(struct CtdlMessage));
1462
1463         ret->cm_magic = CTDLMESSAGE_MAGIC;
1464         ret->cm_anon_type = *mptr++;    /* Anon type byte */
1465         ret->cm_format_type = *mptr++;  /* Format type byte */
1466
1467         /*
1468          * The rest is zero or more arbitrary fields.  Load them in.
1469          * We're done when we encounter either a zero-length field or
1470          * have just processed the 'M' (message text) field.
1471          */
1472         do {
1473                 long len;
1474                 if (mptr >= upper_bound) {
1475                         break;
1476                 }
1477                 field_header = *mptr++;
1478                 len = strlen(mptr);
1479                 CM_SetField(ret, field_header, mptr, len);
1480
1481                 mptr += len + 1;        /* advance to next field */
1482
1483         } while ((mptr < upper_bound) && (field_header != 'M'));
1484
1485         cdb_free(dmsgtext);
1486
1487         /* Always make sure there's something in the msg text field.  If
1488          * it's NULL, the message text is most likely stored separately,
1489          * so go ahead and fetch that.  Failing that, just set a dummy
1490          * body so other code doesn't barf.
1491          */
1492         if ( (CM_IsEmpty(ret, eMesageText)) && (with_body) ) {
1493                 dmsgtext = cdb_fetch(CDB_BIGMSGS, &msgnum, sizeof(long));
1494                 if (dmsgtext != NULL) {
1495                         CM_SetAsField(ret, eMesageText, &dmsgtext->ptr, dmsgtext->len);
1496                         cdb_free(dmsgtext);
1497                 }
1498         }
1499         if (CM_IsEmpty(ret, eMesageText)) {
1500                 CM_SetField(ret, eMesageText, HKEY("\r\n\r\n (no text)\r\n"));
1501         }
1502
1503         /* Perform "before read" hooks (aborting if any return nonzero) */
1504         if (PerformMessageHooks(ret, EVT_BEFOREREAD) > 0) {
1505                 CtdlFreeMessage(ret);
1506                 return NULL;
1507         }
1508
1509         return (ret);
1510 }
1511
1512
1513
1514 /*
1515  * Pre callback function for multipart/alternative
1516  *
1517  * NOTE: this differs from the standard behavior for a reason.  Normally when
1518  *       displaying multipart/alternative you want to show the _last_ usable
1519  *       format in the message.  Here we show the _first_ one, because it's
1520  *       usually text/plain.  Since this set of functions is designed for text
1521  *       output to non-MIME-aware clients, this is the desired behavior.
1522  *
1523  */
1524 void fixed_output_pre(char *name, char *filename, char *partnum, char *disp,
1525                 void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1526                 char *cbid, void *cbuserdata)
1527 {
1528         struct CitContext *CCC = CC;
1529         struct ma_info *ma;
1530
1531         ma = (struct ma_info *)cbuserdata;
1532         MSG_syslog(LOG_DEBUG, "fixed_output_pre() type=<%s>\n", cbtype);
1533         if (!strcasecmp(cbtype, "multipart/alternative")) {
1534                 ++ma->is_ma;
1535                 ma->did_print = 0;
1536         }
1537         if (!strcasecmp(cbtype, "message/rfc822")) {
1538                 ++ma->freeze;
1539         }
1540 }
1541
1542 /*
1543  * Post callback function for multipart/alternative
1544  */
1545 void fixed_output_post(char *name, char *filename, char *partnum, char *disp,
1546                 void *content, char *cbtype, char *cbcharset, size_t length,
1547                 char *encoding, char *cbid, void *cbuserdata)
1548 {
1549         struct CitContext *CCC = CC;
1550         struct ma_info *ma;
1551
1552         ma = (struct ma_info *)cbuserdata;
1553         MSG_syslog(LOG_DEBUG, "fixed_output_post() type=<%s>\n", cbtype);
1554         if (!strcasecmp(cbtype, "multipart/alternative")) {
1555                 --ma->is_ma;
1556                 ma->did_print = 0;
1557         }
1558         if (!strcasecmp(cbtype, "message/rfc822")) {
1559                 --ma->freeze;
1560         }
1561 }
1562
1563 /*
1564  * Inline callback function for mime parser that wants to display text
1565  */
1566 void fixed_output(char *name, char *filename, char *partnum, char *disp,
1567                 void *content, char *cbtype, char *cbcharset, size_t length,
1568                 char *encoding, char *cbid, void *cbuserdata)
1569 {
1570         struct CitContext *CCC = CC;
1571         char *ptr;
1572         char *wptr;
1573         size_t wlen;
1574         struct ma_info *ma;
1575
1576         ma = (struct ma_info *)cbuserdata;
1577
1578         MSG_syslog(LOG_DEBUG,
1579                 "fixed_output() part %s: %s (%s) (%ld bytes)\n",
1580                 partnum, filename, cbtype, (long)length);
1581
1582         /*
1583          * If we're in the middle of a multipart/alternative scope and
1584          * we've already printed another section, skip this one.
1585          */
1586         if ( (ma->is_ma) && (ma->did_print) ) {
1587                 MSG_syslog(LOG_DEBUG, "Skipping part %s (%s)\n", partnum, cbtype);
1588                 return;
1589         }
1590         ma->did_print = 1;
1591
1592         if ( (!strcasecmp(cbtype, "text/plain"))
1593            || (IsEmptyStr(cbtype)) ) {
1594                 wptr = content;
1595                 if (length > 0) {
1596                         client_write(wptr, length);
1597                         if (wptr[length-1] != '\n') {
1598                                 cprintf("\n");
1599                         }
1600                 }
1601                 return;
1602         }
1603
1604         if (!strcasecmp(cbtype, "text/html")) {
1605                 ptr = html_to_ascii(content, length, 80, 0);
1606                 wlen = strlen(ptr);
1607                 client_write(ptr, wlen);
1608                 if ((wlen > 0) && (ptr[wlen-1] != '\n')) {
1609                         cprintf("\n");
1610                 }
1611                 free(ptr);
1612                 return;
1613         }
1614
1615         if (ma->use_fo_hooks) {
1616                 if (PerformFixedOutputHooks(cbtype, content, length)) {
1617                 /* above function returns nonzero if it handled the part */
1618                         return;
1619                 }
1620         }
1621
1622         if (strncasecmp(cbtype, "multipart/", 10)) {
1623                 cprintf("Part %s: %s (%s) (%ld bytes)\r\n",
1624                         partnum, filename, cbtype, (long)length);
1625                 return;
1626         }
1627 }
1628
1629 /*
1630  * The client is elegant and sophisticated and wants to be choosy about
1631  * MIME content types, so figure out which multipart/alternative part
1632  * we're going to send.
1633  *
1634  * We use a system of weights.  When we find a part that matches one of the
1635  * MIME types we've declared as preferential, we can store it in ma->chosen_part
1636  * and then set ma->chosen_pref to that MIME type's position in our preference
1637  * list.  If we then hit another match, we only replace the first match if
1638  * the preference value is lower.
1639  */
1640 void choose_preferred(char *name, char *filename, char *partnum, char *disp,
1641                 void *content, char *cbtype, char *cbcharset, size_t length,
1642                 char *encoding, char *cbid, void *cbuserdata)
1643 {
1644         struct CitContext *CCC = CC;
1645         char buf[1024];
1646         int i;
1647         struct ma_info *ma;
1648
1649         ma = (struct ma_info *)cbuserdata;
1650
1651         // NOTE: REMOVING THIS CONDITIONAL FIXES BUG 220
1652         //       http://bugzilla.citadel.org/show_bug.cgi?id=220
1653         // I don't know if there are any side effects!  Please TEST TEST TEST
1654         //if (ma->is_ma > 0) {
1655
1656         for (i=0; i<num_tokens(CCC->preferred_formats, '|'); ++i) {
1657                 extract_token(buf, CCC->preferred_formats, i, '|', sizeof buf);
1658                 if ( (!strcasecmp(buf, cbtype)) && (!ma->freeze) ) {
1659                         if (i < ma->chosen_pref) {
1660                                 MSG_syslog(LOG_DEBUG, "Setting chosen part: <%s>\n", partnum);
1661                                 safestrncpy(ma->chosen_part, partnum, sizeof ma->chosen_part);
1662                                 ma->chosen_pref = i;
1663                         }
1664                 }
1665         }
1666 }
1667
1668 /*
1669  * Now that we've chosen our preferred part, output it.
1670  */
1671 void output_preferred(char *name,
1672                       char *filename,
1673                       char *partnum,
1674                       char *disp,
1675                       void *content,
1676                       char *cbtype,
1677                       char *cbcharset,
1678                       size_t length,
1679                       char *encoding,
1680                       char *cbid,
1681                       void *cbuserdata)
1682 {
1683         struct CitContext *CCC = CC;
1684         int i;
1685         char buf[128];
1686         int add_newline = 0;
1687         char *text_content;
1688         struct ma_info *ma;
1689         char *decoded = NULL;
1690         size_t bytes_decoded;
1691         int rc = 0;
1692
1693         ma = (struct ma_info *)cbuserdata;
1694
1695         /* This is not the MIME part you're looking for... */
1696         if (strcasecmp(partnum, ma->chosen_part)) return;
1697
1698         /* If the content-type of this part is in our preferred formats
1699          * list, we can simply output it verbatim.
1700          */
1701         for (i=0; i<num_tokens(CCC->preferred_formats, '|'); ++i) {
1702                 extract_token(buf, CCC->preferred_formats, i, '|', sizeof buf);
1703                 if (!strcasecmp(buf, cbtype)) {
1704                         /* Yeah!  Go!  W00t!! */
1705                         if (ma->dont_decode == 0)
1706                                 rc = mime_decode_now (content,
1707                                                       length,
1708                                                       encoding,
1709                                                       &decoded,
1710                                                       &bytes_decoded);
1711                         if (rc < 0)
1712                                 break; /* Give us the chance, maybe theres another one. */
1713
1714                         if (rc == 0) text_content = (char *)content;
1715                         else {
1716                                 text_content = decoded;
1717                                 length = bytes_decoded;
1718                         }
1719
1720                         if (text_content[length-1] != '\n') {
1721                                 ++add_newline;
1722                         }
1723                         cprintf("Content-type: %s", cbtype);
1724                         if (!IsEmptyStr(cbcharset)) {
1725                                 cprintf("; charset=%s", cbcharset);
1726                         }
1727                         cprintf("\nContent-length: %d\n",
1728                                 (int)(length + add_newline) );
1729                         if (!IsEmptyStr(encoding)) {
1730                                 cprintf("Content-transfer-encoding: %s\n", encoding);
1731                         }
1732                         else {
1733                                 cprintf("Content-transfer-encoding: 7bit\n");
1734                         }
1735                         cprintf("X-Citadel-MSG4-Partnum: %s\n", partnum);
1736                         cprintf("\n");
1737                         if (client_write(text_content, length) == -1)
1738                         {
1739                                 MSGM_syslog(LOG_ERR, "output_preferred(): aborting due to write failure.\n");
1740                                 return;
1741                         }
1742                         if (add_newline) cprintf("\n");
1743                         if (decoded != NULL) free(decoded);
1744                         return;
1745                 }
1746         }
1747
1748         /* No translations required or possible: output as text/plain */
1749         cprintf("Content-type: text/plain\n\n");
1750         rc = 0;
1751         if (ma->dont_decode == 0)
1752                 rc = mime_decode_now (content,
1753                                       length,
1754                                       encoding,
1755                                       &decoded,
1756                                       &bytes_decoded);
1757         if (rc < 0)
1758                 return; /* Give us the chance, maybe theres another one. */
1759
1760         if (rc == 0) text_content = (char *)content;
1761         else {
1762                 text_content = decoded;
1763                 length = bytes_decoded;
1764         }
1765
1766         fixed_output(name, filename, partnum, disp, text_content, cbtype, cbcharset,
1767                         length, encoding, cbid, cbuserdata);
1768         if (decoded != NULL) free(decoded);
1769 }
1770
1771
1772 struct encapmsg {
1773         char desired_section[64];
1774         char *msg;
1775         size_t msglen;
1776 };
1777
1778
1779 /*
1780  * Callback function for
1781  */
1782 void extract_encapsulated_message(char *name, char *filename, char *partnum, char *disp,
1783                    void *content, char *cbtype, char *cbcharset, size_t length,
1784                    char *encoding, char *cbid, void *cbuserdata)
1785 {
1786         struct encapmsg *encap;
1787
1788         encap = (struct encapmsg *)cbuserdata;
1789
1790         /* Only proceed if this is the desired section... */
1791         if (!strcasecmp(encap->desired_section, partnum)) {
1792                 encap->msglen = length;
1793                 encap->msg = malloc(length + 2);
1794                 memcpy(encap->msg, content, length);
1795                 return;
1796         }
1797 }
1798
1799
1800 /*
1801  * Determine whether the specified message exists in the cached_msglist
1802  * (This is a security check)
1803  */
1804 int check_cached_msglist(long msgnum) {
1805         struct CitContext *CCC = CC;
1806
1807         /* cases in which we skip the check */
1808         if (!CCC) return om_ok;                                         /* not a session */
1809         if (CCC->client_socket <= 0) return om_ok;                      /* not a client session */
1810         if (CCC->cached_msglist == NULL) return om_access_denied;       /* no msglist fetched */
1811         if (CCC->cached_num_msgs == 0) return om_access_denied;         /* nothing to check */
1812
1813
1814         /* Do a binary search within the cached_msglist for the requested msgnum */
1815         int min = 0;
1816         int max = (CC->cached_num_msgs - 1);
1817
1818         while (max >= min) {
1819                 int middle = min + (max-min) / 2 ;
1820                 if (msgnum == CCC->cached_msglist[middle]) {
1821                         return om_ok;
1822                 }
1823                 if (msgnum > CC->cached_msglist[middle]) {
1824                         min = middle + 1;
1825                 }
1826                 else {
1827                         max = middle - 1;
1828                 }
1829         }
1830
1831         return om_access_denied;
1832 }
1833
1834
1835 /*
1836  * Determine whether the currently logged in session has permission to read
1837  * messages in the current room.
1838  */
1839 int CtdlDoIHavePermissionToReadMessagesInThisRoom(void) {
1840         if (    (!(CC->logged_in))
1841                 && (!(CC->internal_pgm))
1842                 && (!config.c_guest_logins)
1843         ) {
1844                 return(om_not_logged_in);
1845         }
1846         return(om_ok);
1847 }
1848
1849
1850 /*
1851  * Get a message off disk.  (returns om_* values found in msgbase.h)
1852  *
1853  */
1854 int CtdlOutputMsg(long msg_num,         /* message number (local) to fetch */
1855                   int mode,             /* how would you like that message? */
1856                   int headers_only,     /* eschew the message body? */
1857                   int do_proto,         /* do Citadel protocol responses? */
1858                   int crlf,             /* Use CRLF newlines instead of LF? */
1859                   char *section,        /* NULL or a message/rfc822 section */
1860                   int flags,            /* various flags; see msgbase.h */
1861                   char **Author,
1862                   char **Address
1863 ) {
1864         struct CitContext *CCC = CC;
1865         struct CtdlMessage *TheMessage = NULL;
1866         int retcode = CIT_OK;
1867         struct encapmsg encap;
1868         int r;
1869
1870         MSG_syslog(LOG_DEBUG, "CtdlOutputMsg(msgnum=%ld, mode=%d, section=%s)\n",
1871                 msg_num, mode,
1872                 (section ? section : "<>")
1873         );
1874
1875         r = CtdlDoIHavePermissionToReadMessagesInThisRoom();
1876         if (r != om_ok) {
1877                 if (do_proto) {
1878                         if (r == om_not_logged_in) {
1879                                 cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN);
1880                         }
1881                         else {
1882                                 cprintf("%d An unknown error has occurred.\n", ERROR);
1883                         }
1884                 }
1885                 return(r);
1886         }
1887
1888         /*
1889          * Check to make sure the message is actually IN this room
1890          */
1891         r = check_cached_msglist(msg_num);
1892         if (r == om_access_denied) {
1893                 /* Not in the cache?  We get ONE shot to check it again. */
1894                 CtdlForEachMessage(MSGS_ALL, 0L, NULL, NULL, NULL, NULL, NULL);
1895                 r = check_cached_msglist(msg_num);
1896         }
1897         if (r != om_ok) {
1898                 MSG_syslog(LOG_DEBUG, "Security check fail: message %ld is not in %s\n",
1899                            msg_num, CCC->room.QRname
1900                 );
1901                 if (do_proto) {
1902                         if (r == om_access_denied) {
1903                                 cprintf("%d message %ld was not found in this room\n",
1904                                         ERROR + HIGHER_ACCESS_REQUIRED,
1905                                         msg_num
1906                                 );
1907                         }
1908                 }
1909                 return(r);
1910         }
1911
1912         /*
1913          * Fetch the message from disk.  If we're in HEADERS_FAST mode,
1914          * request that we don't even bother loading the body into memory.
1915          */
1916         if (headers_only == HEADERS_FAST) {
1917                 TheMessage = CtdlFetchMessage(msg_num, 0);
1918         }
1919         else {
1920                 TheMessage = CtdlFetchMessage(msg_num, 1);
1921         }
1922
1923         if (TheMessage == NULL) {
1924                 if (do_proto) cprintf("%d Can't locate msg %ld on disk\n",
1925                         ERROR + MESSAGE_NOT_FOUND, msg_num);
1926                 return(om_no_such_msg);
1927         }
1928
1929         /* Here is the weird form of this command, to process only an
1930          * encapsulated message/rfc822 section.
1931          */
1932         if (section) if (!IsEmptyStr(section)) if (strcmp(section, "0")) {
1933                 memset(&encap, 0, sizeof encap);
1934                 safestrncpy(encap.desired_section, section, sizeof encap.desired_section);
1935                 mime_parser(TheMessage->cm_fields[eMesageText],
1936                         NULL,
1937                         *extract_encapsulated_message,
1938                         NULL, NULL, (void *)&encap, 0
1939                 );
1940
1941                 if ((Author != NULL) && (*Author == NULL))
1942                 {
1943                         *Author = TheMessage->cm_fields[eAuthor];
1944                         TheMessage->cm_fields[eAuthor] = NULL;
1945                 }
1946                 if ((Address != NULL) && (*Address == NULL))
1947                 {
1948                         *Address = TheMessage->cm_fields[erFc822Addr];
1949                         TheMessage->cm_fields[erFc822Addr] = NULL;
1950                 }
1951                 CtdlFreeMessage(TheMessage);
1952                 TheMessage = NULL;
1953
1954                 if (encap.msg) {
1955                         encap.msg[encap.msglen] = 0;
1956                         TheMessage = convert_internet_message(encap.msg);
1957                         encap.msg = NULL;       /* no free() here, TheMessage owns it now */
1958
1959                         /* Now we let it fall through to the bottom of this
1960                          * function, because TheMessage now contains the
1961                          * encapsulated message instead of the top-level
1962                          * message.  Isn't that neat?
1963                          */
1964                 }
1965                 else {
1966                         if (do_proto) {
1967                                 cprintf("%d msg %ld has no part %s\n",
1968                                         ERROR + MESSAGE_NOT_FOUND,
1969                                         msg_num,
1970                                         section);
1971                         }
1972                         retcode = om_no_such_msg;
1973                 }
1974
1975         }
1976
1977         /* Ok, output the message now */
1978         if (retcode == CIT_OK)
1979                 retcode = CtdlOutputPreLoadedMsg(TheMessage, mode, headers_only, do_proto, crlf, flags);
1980         if ((Author != NULL) && (*Author == NULL))
1981         {
1982                 *Author = TheMessage->cm_fields[eAuthor];
1983                 TheMessage->cm_fields[eAuthor] = NULL;
1984         }
1985         if ((Address != NULL) && (*Address == NULL))
1986         {
1987                 *Address = TheMessage->cm_fields[erFc822Addr];
1988                 TheMessage->cm_fields[erFc822Addr] = NULL;
1989         }
1990
1991         CtdlFreeMessage(TheMessage);
1992
1993         return(retcode);
1994 }
1995
1996
1997 char *qp_encode_email_addrs(char *source)
1998 {
1999         struct CitContext *CCC = CC;
2000         char *user, *node, *name;
2001         const char headerStr[] = "=?UTF-8?Q?";
2002         char *Encoded;
2003         char *EncodedName;
2004         char *nPtr;
2005         int need_to_encode = 0;
2006         long SourceLen;
2007         long EncodedMaxLen;
2008         long nColons = 0;
2009         long *AddrPtr;
2010         long *AddrUtf8;
2011         long nAddrPtrMax = 50;
2012         long nmax;
2013         int InQuotes = 0;
2014         int i, n;
2015
2016         if (source == NULL) return source;
2017         if (IsEmptyStr(source)) return source;
2018         if (MessageDebugEnabled != 0) cit_backtrace();
2019         MSG_syslog(LOG_DEBUG, "qp_encode_email_addrs: [%s]\n", source);
2020
2021         AddrPtr = malloc (sizeof (long) * nAddrPtrMax);
2022         AddrUtf8 = malloc (sizeof (long) * nAddrPtrMax);
2023         memset(AddrUtf8, 0, sizeof (long) * nAddrPtrMax);
2024         *AddrPtr = 0;
2025         i = 0;
2026         while (!IsEmptyStr (&source[i])) {
2027                 if (nColons >= nAddrPtrMax){
2028                         long *ptr;
2029
2030                         ptr = (long *) malloc(sizeof (long) * nAddrPtrMax * 2);
2031                         memcpy (ptr, AddrPtr, sizeof (long) * nAddrPtrMax);
2032                         free (AddrPtr), AddrPtr = ptr;
2033
2034                         ptr = (long *) malloc(sizeof (long) * nAddrPtrMax * 2);
2035                         memset(&ptr[nAddrPtrMax], 0,
2036                                sizeof (long) * nAddrPtrMax);
2037
2038                         memcpy (ptr, AddrUtf8, sizeof (long) * nAddrPtrMax);
2039                         free (AddrUtf8), AddrUtf8 = ptr;
2040                         nAddrPtrMax *= 2;
2041                 }
2042                 if (((unsigned char) source[i] < 32) ||
2043                     ((unsigned char) source[i] > 126)) {
2044                         need_to_encode = 1;
2045                         AddrUtf8[nColons] = 1;
2046                 }
2047                 if (source[i] == '"')
2048                         InQuotes = !InQuotes;
2049                 if (!InQuotes && source[i] == ',') {
2050                         AddrPtr[nColons] = i;
2051                         nColons++;
2052                 }
2053                 i++;
2054         }
2055         if (need_to_encode == 0) {
2056                 free(AddrPtr);
2057                 free(AddrUtf8);
2058                 return source;
2059         }
2060
2061         SourceLen = i;
2062         EncodedMaxLen = nColons * (sizeof(headerStr) + 3) + SourceLen * 3;
2063         Encoded = (char*) malloc (EncodedMaxLen);
2064
2065         for (i = 0; i < nColons; i++)
2066                 source[AddrPtr[i]++] = '\0';
2067         /* TODO: if libidn, this might get larger*/
2068         user = malloc(SourceLen + 1);
2069         node = malloc(SourceLen + 1);
2070         name = malloc(SourceLen + 1);
2071
2072         nPtr = Encoded;
2073         *nPtr = '\0';
2074         for (i = 0; i < nColons && nPtr != NULL; i++) {
2075                 nmax = EncodedMaxLen - (nPtr - Encoded);
2076                 if (AddrUtf8[i]) {
2077                         process_rfc822_addr(&source[AddrPtr[i]],
2078                                             user,
2079                                             node,
2080                                             name);
2081                         /* TODO: libIDN here ! */
2082                         if (IsEmptyStr(name)) {
2083                                 n = snprintf(nPtr, nmax,
2084                                              (i==0)?"%s@%s" : ",%s@%s",
2085                                              user, node);
2086                         }
2087                         else {
2088                                 EncodedName = rfc2047encode(name, strlen(name));
2089                                 n = snprintf(nPtr, nmax,
2090                                              (i==0)?"%s <%s@%s>" : ",%s <%s@%s>",
2091                                              EncodedName, user, node);
2092                                 free(EncodedName);
2093                         }
2094                 }
2095                 else {
2096                         n = snprintf(nPtr, nmax,
2097                                      (i==0)?"%s" : ",%s",
2098                                      &source[AddrPtr[i]]);
2099                 }
2100                 if (n > 0 )
2101                         nPtr += n;
2102                 else {
2103                         char *ptr, *nnPtr;
2104                         ptr = (char*) malloc(EncodedMaxLen * 2);
2105                         memcpy(ptr, Encoded, EncodedMaxLen);
2106                         nnPtr = ptr + (nPtr - Encoded), nPtr = nnPtr;
2107                         free(Encoded), Encoded = ptr;
2108                         EncodedMaxLen *= 2;
2109                         i--; /* do it once more with properly lengthened buffer */
2110                 }
2111         }
2112         for (i = 0; i < nColons; i++)
2113                 source[--AddrPtr[i]] = ',';
2114
2115         free(user);
2116         free(node);
2117         free(name);
2118         free(AddrUtf8);
2119         free(AddrPtr);
2120         return Encoded;
2121 }
2122
2123
2124 /* If the last item in a list of recipients was truncated to a partial address,
2125  * remove it completely in order to avoid choking libSieve
2126  */
2127 void sanitize_truncated_recipient(char *str)
2128 {
2129         if (!str) return;
2130         if (num_tokens(str, ',') < 2) return;
2131
2132         int len = strlen(str);
2133         if (len < 900) return;
2134         if (len > 998) str[998] = 0;
2135
2136         char *cptr = strrchr(str, ',');
2137         if (!cptr) return;
2138
2139         char *lptr = strchr(cptr, '<');
2140         char *rptr = strchr(cptr, '>');
2141
2142         if ( (lptr) && (rptr) && (rptr > lptr) ) return;
2143
2144         *cptr = 0;
2145 }
2146
2147
2148 void OutputCtdlMsgHeaders(
2149         struct CtdlMessage *TheMessage,
2150         int do_proto)           /* do Citadel protocol responses? */
2151 {
2152         int i;
2153         int suppress_f = 0;
2154         char buf[SIZ];
2155         char display_name[256];
2156
2157         /* begin header processing loop for Citadel message format */
2158         safestrncpy(display_name, "<unknown>", sizeof display_name);
2159         if (!CM_IsEmpty(TheMessage, eAuthor)) {
2160                 strcpy(buf, TheMessage->cm_fields[eAuthor]);
2161                 if (TheMessage->cm_anon_type == MES_ANONONLY) {
2162                         safestrncpy(display_name, "****", sizeof display_name);
2163                 }
2164                 else if (TheMessage->cm_anon_type == MES_ANONOPT) {
2165                         safestrncpy(display_name, "anonymous", sizeof display_name);
2166                 }
2167                 else {
2168                         safestrncpy(display_name, buf, sizeof display_name);
2169                 }
2170                 if ((is_room_aide())
2171                     && ((TheMessage->cm_anon_type == MES_ANONONLY)
2172                         || (TheMessage->cm_anon_type == MES_ANONOPT))) {
2173                         size_t tmp = strlen(display_name);
2174                         snprintf(&display_name[tmp],
2175                                  sizeof display_name - tmp,
2176                                  " [%s]", buf);
2177                 }
2178         }
2179
2180         /* Don't show Internet address for users on the
2181          * local Citadel network.
2182          */
2183         suppress_f = 0;
2184         if (!CM_IsEmpty(TheMessage, eNodeName) &&
2185             (haschar(TheMessage->cm_fields[eNodeName], '.') == 0))
2186         {
2187                 suppress_f = 1;
2188         }
2189
2190         /* Now spew the header fields in the order we like them. */
2191         for (i=0; i< NDiskFields; ++i) {
2192                 eMsgField Field;
2193                 Field = FieldOrder[i];
2194                 if (Field != eMesageText) {
2195                         if ( (!CM_IsEmpty(TheMessage, Field))
2196                              && (msgkeys[Field] != NULL) ) {
2197                                 if ((Field == eenVelopeTo) ||
2198                                     (Field == eRecipient) ||
2199                                     (Field == eCarbonCopY)) {
2200                                         sanitize_truncated_recipient(TheMessage->cm_fields[Field]);
2201                                 }
2202                                 if (Field == eAuthor) {
2203                                         if (do_proto) cprintf("%s=%s\n",
2204                                                               msgkeys[Field],
2205                                                               display_name);
2206                                 }
2207                                 else if ((Field == erFc822Addr) && (suppress_f)) {
2208                                         /* do nothing */
2209                                 }
2210                                 /* Masquerade display name if needed */
2211                                 else {
2212                                         if (do_proto) cprintf("%s=%s\n",
2213                                                               msgkeys[Field],
2214                                                               TheMessage->cm_fields[Field]
2215                                                 );
2216                                 }
2217                         }
2218                 }
2219         }
2220
2221 }
2222
2223 void OutputRFC822MsgHeaders(
2224         struct CtdlMessage *TheMessage,
2225         int flags,              /* should the bessage be exported clean */
2226         const char *nl,
2227         char *mid, long sizeof_mid,
2228         char *suser, long sizeof_suser,
2229         char *luser, long sizeof_luser,
2230         char *fuser, long sizeof_fuser,
2231         char *snode, long sizeof_snode)
2232 {
2233         char datestamp[100];
2234         int subject_found = 0;
2235         char buf[SIZ];
2236         int i, j, k;
2237         char *mptr = NULL;
2238         char *mpptr = NULL;
2239         char *hptr;
2240
2241         for (i = 0; i < 256; ++i) {
2242                 if (TheMessage->cm_fields[i]) {
2243                         mptr = mpptr = TheMessage->cm_fields[i];
2244
2245                         if (i == eAuthor) {
2246                                 safestrncpy(luser, mptr, sizeof_luser);
2247                                 safestrncpy(suser, mptr, sizeof_suser);
2248                         }
2249                         else if (i == 'Y') {
2250                                 if ((flags & QP_EADDR) != 0) {
2251                                         mptr = qp_encode_email_addrs(mptr);
2252                                 }
2253                                 sanitize_truncated_recipient(mptr);
2254                                 cprintf("CC: %s%s", mptr, nl);
2255                         }
2256                         else if (i == 'P') {
2257                                 cprintf("Return-Path: %s%s", mptr, nl);
2258                         }
2259                         else if (i == eListID) {
2260                                 cprintf("List-ID: %s%s", mptr, nl);
2261                         }
2262                         else if (i == 'V') {
2263                                 if ((flags & QP_EADDR) != 0)
2264                                         mptr = qp_encode_email_addrs(mptr);
2265                                 hptr = mptr;
2266                                 while ((*hptr != '\0') && isspace(*hptr))
2267                                         hptr ++;
2268                                 if (!IsEmptyStr(hptr))
2269                                         cprintf("Envelope-To: %s%s", hptr, nl);
2270                         }
2271                         else if (i == 'U') {
2272                                 cprintf("Subject: %s%s", mptr, nl);
2273                                 subject_found = 1;
2274                         }
2275                         else if (i == 'I')
2276                                 safestrncpy(mid, mptr, sizeof_mid); /// TODO: detect @ here and copy @nodename in if not found.
2277                         else if (i == erFc822Addr)
2278                                 safestrncpy(fuser, mptr, sizeof_fuser);
2279                         /* else if (i == 'O')
2280                            cprintf("X-Citadel-Room: %s%s",
2281                            mptr, nl); */
2282                         else if (i == 'N')
2283                                 safestrncpy(snode, mptr, sizeof_snode);
2284                         else if (i == 'R')
2285                         {
2286                                 if (haschar(mptr, '@') == 0)
2287                                 {
2288                                         sanitize_truncated_recipient(mptr);
2289                                         cprintf("To: %s@%s", mptr, config.c_fqdn);
2290                                         cprintf("%s", nl);
2291                                 }
2292                                 else
2293                                 {
2294                                         if ((flags & QP_EADDR) != 0) {
2295                                                 mptr = qp_encode_email_addrs(mptr);
2296                                         }
2297                                         sanitize_truncated_recipient(mptr);
2298                                         cprintf("To: %s", mptr);
2299                                         cprintf("%s", nl);
2300                                 }
2301                         }
2302                         else if (i == 'T') {
2303                                 datestring(datestamp, sizeof datestamp,
2304                                            atol(mptr), DATESTRING_RFC822);
2305                                 cprintf("Date: %s%s", datestamp, nl);
2306                         }
2307                         else if (i == 'W') {
2308                                 cprintf("References: ");
2309                                 k = num_tokens(mptr, '|');
2310                                 for (j=0; j<k; ++j) {
2311                                         extract_token(buf, mptr, j, '|', sizeof buf);
2312                                         cprintf("<%s>", buf);
2313                                         if (j == (k-1)) {
2314                                                 cprintf("%s", nl);
2315                                         }
2316                                         else {
2317                                                 cprintf(" ");
2318                                         }
2319                                 }
2320                         }
2321                         else if (i == eReplyTo) {
2322                                 hptr = mptr;
2323                                 while ((*hptr != '\0') && isspace(*hptr))
2324                                         hptr ++;
2325                                 if (!IsEmptyStr(hptr))
2326                                         cprintf("Reply-To: %s%s", mptr, nl);
2327                         }
2328                         if (mptr != mpptr)
2329                                 free (mptr);
2330                 }
2331         }
2332         if (subject_found == 0) {
2333                 cprintf("Subject: (no subject)%s", nl);
2334         }
2335 }
2336
2337
2338 void Dump_RFC822HeadersBody(
2339         struct CtdlMessage *TheMessage,
2340         int headers_only,       /* eschew the message body? */
2341         int flags,              /* should the bessage be exported clean? */
2342
2343         const char *nl)
2344 {
2345         cit_uint8_t prev_ch;
2346         int eoh = 0;
2347         const char *StartOfText = StrBufNOTNULL;
2348         char outbuf[1024];
2349         int outlen = 0;
2350         int nllen = strlen(nl);
2351         char *mptr;
2352
2353         mptr = TheMessage->cm_fields[eMesageText];
2354
2355
2356         prev_ch = '\0';
2357         while (*mptr != '\0') {
2358                 if (*mptr == '\r') {
2359                         /* do nothing */
2360                 }
2361                 else {
2362                         if ((!eoh) &&
2363                             (*mptr == '\n'))
2364                         {
2365                                 eoh = (*(mptr+1) == '\r') && (*(mptr+2) == '\n');
2366                                 if (!eoh)
2367                                         eoh = *(mptr+1) == '\n';
2368                                 if (eoh)
2369                                 {
2370                                         StartOfText = mptr;
2371                                         StartOfText = strchr(StartOfText, '\n');
2372                                         StartOfText = strchr(StartOfText, '\n');
2373                                 }
2374                         }
2375                         if (((headers_only == HEADERS_NONE) && (mptr >= StartOfText)) ||
2376                             ((headers_only == HEADERS_ONLY) && (mptr < StartOfText)) ||
2377                             ((headers_only != HEADERS_NONE) &&
2378                              (headers_only != HEADERS_ONLY))
2379                                 ) {
2380                                 if (*mptr == '\n') {
2381                                         memcpy(&outbuf[outlen], nl, nllen);
2382                                         outlen += nllen;
2383                                         outbuf[outlen] = '\0';
2384                                 }
2385                                 else {
2386                                         outbuf[outlen++] = *mptr;
2387                                 }
2388                         }
2389                 }
2390                 if (flags & ESC_DOT)
2391                 {
2392                         if ((prev_ch == '\n') &&
2393                             (*mptr == '.') &&
2394                             ((*(mptr+1) == '\r') || (*(mptr+1) == '\n')))
2395                         {
2396                                 outbuf[outlen++] = '.';
2397                         }
2398                         prev_ch = *mptr;
2399                 }
2400                 ++mptr;
2401                 if (outlen > 1000) {
2402                         if (client_write(outbuf, outlen) == -1)
2403                         {
2404                                 struct CitContext *CCC = CC;
2405                                 MSGM_syslog(LOG_ERR, "Dump_RFC822HeadersBody(): aborting due to write failure.\n");
2406                                 return;
2407                         }
2408                         outlen = 0;
2409                 }
2410         }
2411         if (outlen > 0) {
2412                 client_write(outbuf, outlen);
2413         }
2414 }
2415
2416
2417
2418 /* If the format type on disk is 1 (fixed-format), then we want
2419  * everything to be output completely literally ... regardless of
2420  * what message transfer format is in use.
2421  */
2422 void DumpFormatFixed(
2423         struct CtdlMessage *TheMessage,
2424         int mode,               /* how would you like that message? */
2425         const char *nl)
2426 {
2427         cit_uint8_t ch;
2428         char buf[SIZ];
2429         int buflen;
2430         int xlline = 0;
2431         int nllen = strlen (nl);
2432         char *mptr;
2433
2434         mptr = TheMessage->cm_fields[eMesageText];
2435
2436         if (mode == MT_MIME) {
2437                 cprintf("Content-type: text/plain\n\n");
2438         }
2439         *buf = '\0';
2440         buflen = 0;
2441         while (ch = *mptr++, ch > 0) {
2442                 if (ch == '\n')
2443                         ch = '\r';
2444
2445                 if ((buflen > 250) && (!xlline)){
2446                         int tbuflen;
2447                         tbuflen = buflen;
2448
2449                         while ((buflen > 0) &&
2450                                (!isspace(buf[buflen])))
2451                                 buflen --;
2452                         if (buflen == 0) {
2453                                 xlline = 1;
2454                         }
2455                         else {
2456                                 mptr -= tbuflen - buflen;
2457                                 buf[buflen] = '\0';
2458                                 ch = '\r';
2459                         }
2460                 }
2461                 /* if we reach the outer bounds of our buffer,
2462                    abort without respect what whe purge. */
2463                 if (xlline &&
2464                     ((isspace(ch)) ||
2465                      (buflen > SIZ - nllen - 2)))
2466                         ch = '\r';
2467
2468                 if (ch == '\r') {
2469                         memcpy (&buf[buflen], nl, nllen);
2470                         buflen += nllen;
2471                         buf[buflen] = '\0';
2472
2473                         if (client_write(buf, buflen) == -1)
2474                         {
2475                                 struct CitContext *CCC = CC;
2476                                 MSGM_syslog(LOG_ERR, "DumpFormatFixed(): aborting due to write failure.\n");
2477                                 return;
2478                         }
2479                         *buf = '\0';
2480                         buflen = 0;
2481                         xlline = 0;
2482                 } else {
2483                         buf[buflen] = ch;
2484                         buflen++;
2485                 }
2486         }
2487         buf[buflen] = '\0';
2488         if (!IsEmptyStr(buf))
2489                 cprintf("%s%s", buf, nl);
2490 }
2491
2492 /*
2493  * Get a message off disk.  (returns om_* values found in msgbase.h)
2494  */
2495 int CtdlOutputPreLoadedMsg(
2496                 struct CtdlMessage *TheMessage,
2497                 int mode,               /* how would you like that message? */
2498                 int headers_only,       /* eschew the message body? */
2499                 int do_proto,           /* do Citadel protocol responses? */
2500                 int crlf,               /* Use CRLF newlines instead of LF? */
2501                 int flags               /* should the bessage be exported clean? */
2502 ) {
2503         struct CitContext *CCC = CC;
2504         int i;
2505         char *mptr = NULL;
2506         const char *nl; /* newline string */
2507         struct ma_info ma;
2508
2509         /* Buffers needed for RFC822 translation.  These are all filled
2510          * using functions that are bounds-checked, and therefore we can
2511          * make them substantially smaller than SIZ.
2512          */
2513         char suser[100];
2514         char luser[100];
2515         char fuser[100];
2516         char snode[100];
2517         char mid[100];
2518
2519         MSG_syslog(LOG_DEBUG, "CtdlOutputPreLoadedMsg(TheMessage=%s, %d, %d, %d, %d\n",
2520                    ((TheMessage == NULL) ? "NULL" : "not null"),
2521                    mode, headers_only, do_proto, crlf);
2522
2523         strcpy(mid, "unknown");
2524         nl = (crlf ? "\r\n" : "\n");
2525
2526         if (!is_valid_message(TheMessage)) {
2527                 MSGM_syslog(LOG_ERR,
2528                             "ERROR: invalid preloaded message for output\n");
2529                 cit_backtrace ();
2530                 return(om_no_such_msg);
2531         }
2532
2533         /* Suppress envelope recipients if required to avoid disclosing BCC addresses.
2534          * Pad it with spaces in order to avoid changing the RFC822 length of the message.
2535          */
2536         if ( (flags & SUPPRESS_ENV_TO) && (!CM_IsEmpty(TheMessage, eenVelopeTo)) ) {
2537                 memset(TheMessage->cm_fields[eenVelopeTo], ' ', strlen(TheMessage->cm_fields[eenVelopeTo]));
2538         }
2539
2540         /* Are we downloading a MIME component? */
2541         if (mode == MT_DOWNLOAD) {
2542                 if (TheMessage->cm_format_type != FMT_RFC822) {
2543                         if (do_proto)
2544                                 cprintf("%d This is not a MIME message.\n",
2545                                 ERROR + ILLEGAL_VALUE);
2546                 } else if (CCC->download_fp != NULL) {
2547                         if (do_proto) cprintf(
2548                                 "%d You already have a download open.\n",
2549                                 ERROR + RESOURCE_BUSY);
2550                 } else {
2551                         /* Parse the message text component */
2552                         mptr = TheMessage->cm_fields[eMesageText];
2553                         mime_parser(mptr, NULL, *mime_download, NULL, NULL, NULL, 0);
2554                         /* If there's no file open by this time, the requested
2555                          * section wasn't found, so print an error
2556                          */
2557                         if (CCC->download_fp == NULL) {
2558                                 if (do_proto) cprintf(
2559                                         "%d Section %s not found.\n",
2560                                         ERROR + FILE_NOT_FOUND,
2561                                         CCC->download_desired_section);
2562                         }
2563                 }
2564                 return((CCC->download_fp != NULL) ? om_ok : om_mime_error);
2565         }
2566
2567         /* MT_SPEW_SECTION is like MT_DOWNLOAD except it outputs the whole MIME part
2568          * in a single server operation instead of opening a download file.
2569          */
2570         if (mode == MT_SPEW_SECTION) {
2571                 if (TheMessage->cm_format_type != FMT_RFC822) {
2572                         if (do_proto)
2573                                 cprintf("%d This is not a MIME message.\n",
2574                                 ERROR + ILLEGAL_VALUE);
2575                 } else {
2576                         /* Parse the message text component */
2577                         int found_it = 0;
2578
2579                         mptr = TheMessage->cm_fields[eMesageText];
2580                         mime_parser(mptr, NULL, *mime_spew_section, NULL, NULL, (void *)&found_it, 0);
2581                         /* If section wasn't found, print an error
2582                          */
2583                         if (!found_it) {
2584                                 if (do_proto) cprintf(
2585                                         "%d Section %s not found.\n",
2586                                         ERROR + FILE_NOT_FOUND,
2587                                         CCC->download_desired_section);
2588                         }
2589                 }
2590                 return((CCC->download_fp != NULL) ? om_ok : om_mime_error);
2591         }
2592
2593         /* now for the user-mode message reading loops */
2594         if (do_proto) cprintf("%d msg:\n", LISTING_FOLLOWS);
2595
2596         /* Does the caller want to skip the headers? */
2597         if (headers_only == HEADERS_NONE) goto START_TEXT;
2598
2599         /* Tell the client which format type we're using. */
2600         if ( (mode == MT_CITADEL) && (do_proto) ) {
2601                 cprintf("type=%d\n", TheMessage->cm_format_type);
2602         }
2603
2604         /* nhdr=yes means that we're only displaying headers, no body */
2605         if ( (TheMessage->cm_anon_type == MES_ANONONLY)
2606            && ((mode == MT_CITADEL) || (mode == MT_MIME))
2607            && (do_proto)
2608            ) {
2609                 cprintf("nhdr=yes\n");
2610         }
2611
2612         if ((mode == MT_CITADEL) || (mode == MT_MIME))
2613                 OutputCtdlMsgHeaders(TheMessage, do_proto);
2614
2615
2616         /* begin header processing loop for RFC822 transfer format */
2617         strcpy(suser, "");
2618         strcpy(luser, "");
2619         strcpy(fuser, "");
2620         strcpy(snode, NODENAME);
2621         if (mode == MT_RFC822)
2622                 OutputRFC822MsgHeaders(
2623                         TheMessage,
2624                         flags,
2625                         nl,
2626                         mid, sizeof(mid),
2627                         suser, sizeof(suser),
2628                         luser, sizeof(luser),
2629                         fuser, sizeof(fuser),
2630                         snode, sizeof(snode)
2631                         );
2632
2633
2634         for (i=0; !IsEmptyStr(&suser[i]); ++i) {
2635                 suser[i] = tolower(suser[i]);
2636                 if (!isalnum(suser[i])) suser[i]='_';
2637         }
2638
2639         if (mode == MT_RFC822) {
2640                 if (!strcasecmp(snode, NODENAME)) {
2641                         safestrncpy(snode, FQDN, sizeof snode);
2642                 }
2643
2644                 /* Construct a fun message id */
2645                 cprintf("Message-ID: <%s", mid);/// todo: this possibly breaks threadding mails.
2646                 if (strchr(mid, '@')==NULL) {
2647                         cprintf("@%s", snode);
2648                 }
2649                 cprintf(">%s", nl);
2650
2651                 if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONONLY)) {
2652                         cprintf("From: \"----\" <x@x.org>%s", nl);
2653                 }
2654                 else if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONOPT)) {
2655                         cprintf("From: \"anonymous\" <x@x.org>%s", nl);
2656                 }
2657                 else if (!IsEmptyStr(fuser)) {
2658                         cprintf("From: \"%s\" <%s>%s", luser, fuser, nl);
2659                 }
2660                 else {
2661                         cprintf("From: \"%s\" <%s@%s>%s", luser, suser, snode, nl);
2662                 }
2663
2664                 /* Blank line signifying RFC822 end-of-headers */
2665                 if (TheMessage->cm_format_type != FMT_RFC822) {
2666                         cprintf("%s", nl);
2667                 }
2668         }
2669
2670         /* end header processing loop ... at this point, we're in the text */
2671 START_TEXT:
2672         if (headers_only == HEADERS_FAST) goto DONE;
2673
2674         /* Tell the client about the MIME parts in this message */
2675         if (TheMessage->cm_format_type == FMT_RFC822) {
2676                 if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
2677                         mptr = TheMessage->cm_fields[eMesageText];
2678                         memset(&ma, 0, sizeof(struct ma_info));
2679                         mime_parser(mptr, NULL,
2680                                 (do_proto ? *list_this_part : NULL),
2681                                 (do_proto ? *list_this_pref : NULL),
2682                                 (do_proto ? *list_this_suff : NULL),
2683                                 (void *)&ma, 1);
2684                 }
2685                 else if (mode == MT_RFC822) {   /* unparsed RFC822 dump */
2686                         Dump_RFC822HeadersBody(
2687                                 TheMessage,
2688                                 headers_only,
2689                                 flags,
2690                                 nl);
2691                         goto DONE;
2692                 }
2693         }
2694
2695         if (headers_only == HEADERS_ONLY) {
2696                 goto DONE;
2697         }
2698
2699         /* signify start of msg text */
2700         if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
2701                 if (do_proto) cprintf("text\n");
2702         }
2703
2704         if (TheMessage->cm_format_type == FMT_FIXED)
2705                 DumpFormatFixed(
2706                         TheMessage,
2707                         mode,           /* how would you like that message? */
2708                         nl);
2709
2710         /* If the message on disk is format 0 (Citadel vari-format), we
2711          * output using the formatter at 80 columns.  This is the final output
2712          * form if the transfer format is RFC822, but if the transfer format
2713          * is Citadel proprietary, it'll still work, because the indentation
2714          * for new paragraphs is correct and the client will reformat the
2715          * message to the reader's screen width.
2716          */
2717         if (TheMessage->cm_format_type == FMT_CITADEL) {
2718                 mptr = TheMessage->cm_fields[eMesageText];
2719
2720                 if (mode == MT_MIME) {
2721                         cprintf("Content-type: text/x-citadel-variformat\n\n");
2722                 }
2723                 memfmout(mptr, nl);
2724         }
2725
2726         /* If the message on disk is format 4 (MIME), we've gotta hand it
2727          * off to the MIME parser.  The client has already been told that
2728          * this message is format 1 (fixed format), so the callback function
2729          * we use will display those parts as-is.
2730          */
2731         if (TheMessage->cm_format_type == FMT_RFC822) {
2732                 memset(&ma, 0, sizeof(struct ma_info));
2733
2734                 if (mode == MT_MIME) {
2735                         ma.use_fo_hooks = 0;
2736                         strcpy(ma.chosen_part, "1");
2737                         ma.chosen_pref = 9999;
2738                         ma.dont_decode = CCC->msg4_dont_decode;
2739                         mime_parser(mptr, NULL,
2740                                 *choose_preferred, *fixed_output_pre,
2741                                 *fixed_output_post, (void *)&ma, 1);
2742                         mime_parser(mptr, NULL,
2743                                 *output_preferred, NULL, NULL, (void *)&ma, 1);
2744                 }
2745                 else {
2746                         ma.use_fo_hooks = 1;
2747                         mime_parser(mptr, NULL,
2748                                 *fixed_output, *fixed_output_pre,
2749                                 *fixed_output_post, (void *)&ma, 0);
2750                 }
2751
2752         }
2753
2754 DONE:   /* now we're done */
2755         if (do_proto) cprintf("000\n");
2756         return(om_ok);
2757 }
2758
2759
2760 /*
2761  * display a message (mode 0 - Citadel proprietary)
2762  */
2763 void cmd_msg0(char *cmdbuf)
2764 {
2765         long msgid;
2766         int headers_only = HEADERS_ALL;
2767
2768         msgid = extract_long(cmdbuf, 0);
2769         headers_only = extract_int(cmdbuf, 1);
2770
2771         CtdlOutputMsg(msgid, MT_CITADEL, headers_only, 1, 0, NULL, 0, NULL, NULL);
2772         return;
2773 }
2774
2775
2776 /*
2777  * display a message (mode 2 - RFC822)
2778  */
2779 void cmd_msg2(char *cmdbuf)
2780 {
2781         long msgid;
2782         int headers_only = HEADERS_ALL;
2783
2784         msgid = extract_long(cmdbuf, 0);
2785         headers_only = extract_int(cmdbuf, 1);
2786
2787         CtdlOutputMsg(msgid, MT_RFC822, headers_only, 1, 1, NULL, 0, NULL, NULL);
2788 }
2789
2790
2791
2792 /*
2793  * display a message (mode 3 - IGnet raw format - internal programs only)
2794  */
2795 void cmd_msg3(char *cmdbuf)
2796 {
2797         long msgnum;
2798         struct CtdlMessage *msg = NULL;
2799         struct ser_ret smr;
2800
2801         if (CC->internal_pgm == 0) {
2802                 cprintf("%d This command is for internal programs only.\n",
2803                         ERROR + HIGHER_ACCESS_REQUIRED);
2804                 return;
2805         }
2806
2807         msgnum = extract_long(cmdbuf, 0);
2808         msg = CtdlFetchMessage(msgnum, 1);
2809         if (msg == NULL) {
2810                 cprintf("%d Message %ld not found.\n",
2811                         ERROR + MESSAGE_NOT_FOUND, msgnum);
2812                 return;
2813         }
2814
2815         serialize_message(&smr, msg);
2816         CtdlFreeMessage(msg);
2817
2818         if (smr.len == 0) {
2819                 cprintf("%d Unable to serialize message\n",
2820                         ERROR + INTERNAL_ERROR);
2821                 return;
2822         }
2823
2824         cprintf("%d %ld\n", BINARY_FOLLOWS, (long)smr.len);
2825         client_write((char *)smr.ser, (int)smr.len);
2826         free(smr.ser);
2827 }
2828
2829
2830
2831 /*
2832  * Display a message using MIME content types
2833  */
2834 void cmd_msg4(char *cmdbuf)
2835 {
2836         long msgid;
2837         char section[64];
2838
2839         msgid = extract_long(cmdbuf, 0);
2840         extract_token(section, cmdbuf, 1, '|', sizeof section);
2841         CtdlOutputMsg(msgid, MT_MIME, 0, 1, 0, (section[0] ? section : NULL) , 0, NULL, NULL);
2842 }
2843
2844
2845
2846 /*
2847  * Client tells us its preferred message format(s)
2848  */
2849 void cmd_msgp(char *cmdbuf)
2850 {
2851         if (!strcasecmp(cmdbuf, "dont_decode")) {
2852                 CC->msg4_dont_decode = 1;
2853                 cprintf("%d MSG4 will not pre-decode messages.\n", CIT_OK);
2854         }
2855         else {
2856                 safestrncpy(CC->preferred_formats, cmdbuf, sizeof(CC->preferred_formats));
2857                 cprintf("%d Preferred MIME formats have been set.\n", CIT_OK);
2858         }
2859 }
2860
2861
2862 /*
2863  * Open a component of a MIME message as a download file
2864  */
2865 void cmd_opna(char *cmdbuf)
2866 {
2867         long msgid;
2868         char desired_section[128];
2869
2870         msgid = extract_long(cmdbuf, 0);
2871         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2872         safestrncpy(CC->download_desired_section, desired_section,
2873                 sizeof CC->download_desired_section);
2874         CtdlOutputMsg(msgid, MT_DOWNLOAD, 0, 1, 1, NULL, 0, NULL, NULL);
2875 }
2876
2877
2878 /*
2879  * Open a component of a MIME message and transmit it all at once
2880  */
2881 void cmd_dlat(char *cmdbuf)
2882 {
2883         long msgid;
2884         char desired_section[128];
2885
2886         msgid = extract_long(cmdbuf, 0);
2887         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2888         safestrncpy(CC->download_desired_section, desired_section,
2889                 sizeof CC->download_desired_section);
2890         CtdlOutputMsg(msgid, MT_SPEW_SECTION, 0, 1, 1, NULL, 0, NULL, NULL);
2891 }
2892
2893
2894 /*
2895  * Save one or more message pointers into a specified room
2896  * (Returns 0 for success, nonzero for failure)
2897  * roomname may be NULL to use the current room
2898  *
2899  * Note that the 'supplied_msg' field may be set to NULL, in which case
2900  * the message will be fetched from disk, by number, if we need to perform
2901  * replication checks.  This adds an additional database read, so if the
2902  * caller already has the message in memory then it should be supplied.  (Obviously
2903  * this mode of operation only works if we're saving a single message.)
2904  */
2905 int CtdlSaveMsgPointersInRoom(char *roomname, long newmsgidlist[], int num_newmsgs,
2906                         int do_repl_check, struct CtdlMessage *supplied_msg, int suppress_refcount_adj
2907 ) {
2908         struct CitContext *CCC = CC;
2909         int i, j, unique;
2910         char hold_rm[ROOMNAMELEN];
2911         struct cdbdata *cdbfr;
2912         int num_msgs;
2913         long *msglist;
2914         long highest_msg = 0L;
2915
2916         long msgid = 0;
2917         struct CtdlMessage *msg = NULL;
2918
2919         long *msgs_to_be_merged = NULL;
2920         int num_msgs_to_be_merged = 0;
2921
2922         MSG_syslog(LOG_DEBUG,
2923                    "CtdlSaveMsgPointersInRoom(room=%s, num_msgs=%d, repl=%d, suppress_rca=%d)\n",
2924                    roomname, num_newmsgs, do_repl_check, suppress_refcount_adj
2925         );
2926
2927         strcpy(hold_rm, CCC->room.QRname);
2928
2929         /* Sanity checks */
2930         if (newmsgidlist == NULL) return(ERROR + INTERNAL_ERROR);
2931         if (num_newmsgs < 1) return(ERROR + INTERNAL_ERROR);
2932         if (num_newmsgs > 1) supplied_msg = NULL;
2933
2934         /* Now the regular stuff */
2935         if (CtdlGetRoomLock(&CCC->room,
2936            ((roomname != NULL) ? roomname : CCC->room.QRname) )
2937            != 0) {
2938                 MSG_syslog(LOG_ERR, "No such room <%s>\n", roomname);
2939                 return(ERROR + ROOM_NOT_FOUND);
2940         }
2941
2942
2943         msgs_to_be_merged = malloc(sizeof(long) * num_newmsgs);
2944         num_msgs_to_be_merged = 0;
2945
2946
2947         cdbfr = cdb_fetch(CDB_MSGLISTS, &CCC->room.QRnumber, sizeof(long));
2948         if (cdbfr == NULL) {
2949                 msglist = NULL;
2950                 num_msgs = 0;
2951         } else {
2952                 msglist = (long *) cdbfr->ptr;
2953                 cdbfr->ptr = NULL;      /* CtdlSaveMsgPointerInRoom() now owns this memory */
2954                 num_msgs = cdbfr->len / sizeof(long);
2955                 cdb_free(cdbfr);
2956         }
2957
2958
2959         /* Create a list of msgid's which were supplied by the caller, but do
2960          * not already exist in the target room.  It is absolutely taboo to
2961          * have more than one reference to the same message in a room.
2962          */
2963         for (i=0; i<num_newmsgs; ++i) {
2964                 unique = 1;
2965                 if (num_msgs > 0) for (j=0; j<num_msgs; ++j) {
2966                         if (msglist[j] == newmsgidlist[i]) {
2967                                 unique = 0;
2968                         }
2969                 }
2970                 if (unique) {
2971                         msgs_to_be_merged[num_msgs_to_be_merged++] = newmsgidlist[i];
2972                 }
2973         }
2974
2975         MSG_syslog(LOG_DEBUG, "%d unique messages to be merged\n", num_msgs_to_be_merged);
2976
2977         /*
2978          * Now merge the new messages
2979          */
2980         msglist = realloc(msglist, (sizeof(long) * (num_msgs + num_msgs_to_be_merged)) );
2981         if (msglist == NULL) {
2982                 MSGM_syslog(LOG_ALERT, "ERROR: can't realloc message list!\n");
2983                 free(msgs_to_be_merged);
2984                 return (ERROR + INTERNAL_ERROR);
2985         }
2986         memcpy(&msglist[num_msgs], msgs_to_be_merged, (sizeof(long) * num_msgs_to_be_merged) );
2987         num_msgs += num_msgs_to_be_merged;
2988
2989         /* Sort the message list, so all the msgid's are in order */
2990         num_msgs = sort_msglist(msglist, num_msgs);
2991
2992         /* Determine the highest message number */
2993         highest_msg = msglist[num_msgs - 1];
2994
2995         /* Write it back to disk. */
2996         cdb_store(CDB_MSGLISTS, &CCC->room.QRnumber, (int)sizeof(long),
2997                   msglist, (int)(num_msgs * sizeof(long)));
2998
2999         /* Free up the memory we used. */
3000         free(msglist);
3001
3002         /* Update the highest-message pointer and unlock the room. */
3003         CCC->room.QRhighest = highest_msg;
3004         CtdlPutRoomLock(&CCC->room);
3005
3006         /* Perform replication checks if necessary */
3007         if ( (DoesThisRoomNeedEuidIndexing(&CCC->room)) && (do_repl_check) ) {
3008                 MSGM_syslog(LOG_DEBUG, "CtdlSaveMsgPointerInRoom() doing repl checks\n");
3009
3010                 for (i=0; i<num_msgs_to_be_merged; ++i) {
3011                         msgid = msgs_to_be_merged[i];
3012
3013                         if (supplied_msg != NULL) {
3014                                 msg = supplied_msg;
3015                         }
3016                         else {
3017                                 msg = CtdlFetchMessage(msgid, 0);
3018                         }
3019
3020                         if (msg != NULL) {
3021                                 ReplicationChecks(msg);
3022
3023                                 /* If the message has an Exclusive ID, index that... */
3024                                 if (!CM_IsEmpty(msg, eExclusiveID)) {
3025                                         index_message_by_euid(msg->cm_fields[eExclusiveID], &CCC->room, msgid);
3026                                 }
3027
3028                                 /* Free up the memory we may have allocated */
3029                                 if (msg != supplied_msg) {
3030                                         CtdlFreeMessage(msg);
3031                                 }
3032                         }
3033
3034                 }
3035         }
3036
3037         else {
3038                 MSGM_syslog(LOG_DEBUG, "CtdlSaveMsgPointerInRoom() skips repl checks\n");
3039         }
3040
3041         /* Submit this room for processing by hooks */
3042         PerformRoomHooks(&CCC->room);
3043
3044         /* Go back to the room we were in before we wandered here... */
3045         CtdlGetRoom(&CCC->room, hold_rm);
3046
3047         /* Bump the reference count for all messages which were merged */
3048         if (!suppress_refcount_adj) {
3049                 AdjRefCountList(msgs_to_be_merged, num_msgs_to_be_merged, +1);
3050         }
3051
3052         /* Free up memory... */
3053         if (msgs_to_be_merged != NULL) {
3054                 free(msgs_to_be_merged);
3055         }
3056
3057         /* Return success. */
3058         return (0);
3059 }
3060
3061
3062 /*
3063  * This is the same as CtdlSaveMsgPointersInRoom() but it only accepts
3064  * a single message.
3065  */
3066 int CtdlSaveMsgPointerInRoom(char *roomname, long msgid,
3067                              int do_repl_check, struct CtdlMessage *supplied_msg)
3068 {
3069         return CtdlSaveMsgPointersInRoom(roomname, &msgid, 1, do_repl_check, supplied_msg, 0);
3070 }
3071
3072
3073
3074
3075 /*
3076  * Message base operation to save a new message to the message store
3077  * (returns new message number)
3078  *
3079  * This is the back end for CtdlSubmitMsg() and should not be directly
3080  * called by server-side modules.
3081  *
3082  */
3083 long send_message(struct CtdlMessage *msg) {
3084         struct CitContext *CCC = CC;
3085         long newmsgid;
3086         long retval;
3087         char msgidbuf[256];
3088         long msgidbuflen;
3089         struct ser_ret smr;
3090         int is_bigmsg = 0;
3091         char *holdM = NULL;
3092
3093         /* Get a new message number */
3094         newmsgid = get_new_message_number();
3095         msgidbuflen = snprintf(msgidbuf, sizeof msgidbuf, "%08lX-%08lX@%s",
3096                                (long unsigned int) time(NULL),
3097                                (long unsigned int) newmsgid,
3098                                config.c_fqdn
3099                 );
3100
3101         /* Generate an ID if we don't have one already */
3102         if (CM_IsEmpty(msg, emessageId)) {
3103                 CM_SetField(msg, emessageId, msgidbuf, msgidbuflen);
3104         }
3105
3106         /* If the message is big, set its body aside for storage elsewhere */
3107         if (!CM_IsEmpty(msg, eMesageText)) {
3108                 if (strlen(msg->cm_fields[eMesageText]) > BIGMSG) {
3109                         is_bigmsg = 1;
3110                         holdM = msg->cm_fields[eMesageText];
3111                         msg->cm_fields[eMesageText] = NULL;
3112                 }
3113         }
3114
3115         /* Serialize our data structure for storage in the database */
3116         serialize_message(&smr, msg);
3117
3118         if (is_bigmsg) {
3119                 msg->cm_fields[eMesageText] = holdM;
3120         }
3121
3122         if (smr.len == 0) {
3123                 cprintf("%d Unable to serialize message\n",
3124                         ERROR + INTERNAL_ERROR);
3125                 return (-1L);
3126         }
3127
3128         /* Write our little bundle of joy into the message base */
3129         if (cdb_store(CDB_MSGMAIN, &newmsgid, (int)sizeof(long),
3130                       smr.ser, smr.len) < 0) {
3131                 MSGM_syslog(LOG_ERR, "Can't store message\n");
3132                 retval = 0L;
3133         } else {
3134                 if (is_bigmsg) {
3135                         cdb_store(CDB_BIGMSGS,
3136                                   &newmsgid,
3137                                   (int)sizeof(long),
3138                                   holdM,
3139                                   (strlen(holdM) + 1)
3140                                 );
3141                 }
3142                 retval = newmsgid;
3143         }
3144
3145         /* Free the memory we used for the serialized message */
3146         free(smr.ser);
3147
3148         /* Return the *local* message ID to the caller
3149          * (even if we're storing an incoming network message)
3150          */
3151         return(retval);
3152 }
3153
3154
3155
3156 /*
3157  * Serialize a struct CtdlMessage into the format used on disk and network.
3158  *
3159  * This function loads up a "struct ser_ret" (defined in server.h) which
3160  * contains the length of the serialized message and a pointer to the
3161  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
3162  */
3163 void serialize_message(struct ser_ret *ret,             /* return values */
3164                        struct CtdlMessage *msg) /* unserialized msg */
3165 {
3166         struct CitContext *CCC = CC;
3167         size_t wlen, fieldlen;
3168         int i;
3169         long lengths[NDiskFields];
3170
3171         memset(lengths, 0, sizeof(lengths));
3172
3173         /*
3174          * Check for valid message format
3175          */
3176         if (is_valid_message(msg) == 0) {
3177                 MSGM_syslog(LOG_ERR, "serialize_message() aborting due to invalid message\n");
3178                 ret->len = 0;
3179                 ret->ser = NULL;
3180                 return;
3181         }
3182
3183         ret->len = 3;
3184         for (i=0; i < NDiskFields; ++i)
3185                 if (msg->cm_fields[FieldOrder[i]] != NULL)
3186                 {
3187                         lengths[i] = strlen(msg->cm_fields[FieldOrder[i]]);
3188                         ret->len += lengths[i] + 2;
3189                 }
3190
3191         ret->ser = malloc(ret->len);
3192         if (ret->ser == NULL) {
3193                 MSG_syslog(LOG_ERR, "serialize_message() malloc(%ld) failed: %s\n",
3194                            (long)ret->len, strerror(errno));
3195                 ret->len = 0;
3196                 ret->ser = NULL;
3197                 return;
3198         }
3199
3200         ret->ser[0] = 0xFF;
3201         ret->ser[1] = msg->cm_anon_type;
3202         ret->ser[2] = msg->cm_format_type;
3203         wlen = 3;
3204
3205         for (i=0; i < NDiskFields; ++i)
3206                 if (msg->cm_fields[FieldOrder[i]] != NULL)
3207                 {
3208                         fieldlen = lengths[i];
3209                         ret->ser[wlen++] = (char)FieldOrder[i];
3210
3211                         memcpy(&ret->ser[wlen],
3212                                msg->cm_fields[FieldOrder[i]],
3213                                fieldlen+1);
3214
3215                         wlen = wlen + fieldlen + 1;
3216                 }
3217
3218         if (ret->len != wlen) {
3219                 MSG_syslog(LOG_ERR, "ERROR: len=%ld wlen=%ld\n",
3220                            (long)ret->len, (long)wlen);
3221         }
3222
3223         return;
3224 }
3225
3226
3227 /*
3228  * Check to see if any messages already exist in the current room which
3229  * carry the same Exclusive ID as this one.  If any are found, delete them.
3230  */
3231 void ReplicationChecks(struct CtdlMessage *msg) {
3232         struct CitContext *CCC = CC;
3233         long old_msgnum = (-1L);
3234
3235         if (DoesThisRoomNeedEuidIndexing(&CCC->room) == 0) return;
3236
3237         MSG_syslog(LOG_DEBUG, "Performing replication checks in <%s>\n",
3238                    CCC->room.QRname);
3239
3240         /* No exclusive id?  Don't do anything. */
3241         if (msg == NULL) return;
3242         if (CM_IsEmpty(msg, eExclusiveID)) return;
3243
3244         /*MSG_syslog(LOG_DEBUG, "Exclusive ID: <%s> for room <%s>\n",
3245           msg->cm_fields[eExclusiveID], CCC->room.QRname);*/
3246
3247         old_msgnum = CtdlLocateMessageByEuid(msg->cm_fields[eExclusiveID], &CCC->room);
3248         if (old_msgnum > 0L) {
3249                 MSG_syslog(LOG_DEBUG, "ReplicationChecks() replacing message %ld\n", old_msgnum);
3250                 CtdlDeleteMessages(CCC->room.QRname, &old_msgnum, 1, "");
3251         }
3252 }
3253
3254
3255
3256 /*
3257  * Save a message to disk and submit it into the delivery system.
3258  */
3259 long CtdlSubmitMsg(struct CtdlMessage *msg,     /* message to save */
3260                    struct recptypes *recps,     /* recipients (if mail) */
3261                    const char *force,           /* force a particular room? */
3262                    int flags                    /* should the message be exported clean? */
3263         )
3264 {
3265         char submit_filename[128];
3266         char hold_rm[ROOMNAMELEN];
3267         char actual_rm[ROOMNAMELEN];
3268         char force_room[ROOMNAMELEN];
3269         char content_type[SIZ];                 /* We have to learn this */
3270         char recipient[SIZ];
3271         const char *room;
3272         long newmsgid;
3273         const char *mptr = NULL;
3274         struct ctdluser userbuf;
3275         int a, i;
3276         struct MetaData smi;
3277         FILE *network_fp = NULL;
3278         static int seqnum = 1;
3279         struct CtdlMessage *imsg = NULL;
3280         char *instr = NULL;
3281         size_t instr_alloc = 0;
3282         struct ser_ret smr;
3283         char *hold_R, *hold_D;
3284         char *collected_addresses = NULL;
3285         struct addresses_to_be_filed *aptr = NULL;
3286         StrBuf *saved_rfc822_version = NULL;
3287         int qualified_for_journaling = 0;
3288         CitContext *CCC = MyContext();
3289         char bounce_to[1024] = "";
3290         int rv = 0;
3291
3292         MSGM_syslog(LOG_DEBUG, "CtdlSubmitMsg() called\n");
3293         if (is_valid_message(msg) == 0) return(-1);     /* self check */
3294
3295         /* If this message has no timestamp, we take the liberty of
3296          * giving it one, right now.
3297          */
3298         if (CM_IsEmpty(msg, eTimestamp)) {
3299                 CM_SetFieldLONG(msg, eTimestamp, time(NULL));
3300         }
3301
3302         /* If this message has no path, we generate one.
3303          */
3304         if (CM_IsEmpty(msg, eMessagePath)) {
3305                 if (!CM_IsEmpty(msg, eAuthor)) {
3306                         CM_CopyField(msg, eMessagePath, eAuthor);
3307                         for (a=0; !IsEmptyStr(&msg->cm_fields[eMessagePath][a]); ++a) {
3308                                 if (isspace(msg->cm_fields[eMessagePath][a])) {
3309                                         msg->cm_fields[eMessagePath][a] = ' ';
3310                                 }
3311                         }
3312                 }
3313                 else {
3314                         CM_SetField(msg, eMessagePath, HKEY("unknown"));
3315                 }
3316         }
3317
3318         if (force == NULL) {
3319                 force_room[0] = '\0';
3320         }
3321         else {
3322                 strcpy(force_room, force);
3323         }
3324
3325         /* Learn about what's inside, because it's what's inside that counts */
3326         if (CM_IsEmpty(msg, eMesageText)) {
3327                 MSGM_syslog(LOG_ERR, "ERROR: attempt to save message with NULL body\n");
3328                 return(-2);
3329         }
3330
3331         switch (msg->cm_format_type) {
3332         case 0:
3333                 strcpy(content_type, "text/x-citadel-variformat");
3334                 break;
3335         case 1:
3336                 strcpy(content_type, "text/plain");
3337                 break;
3338         case 4:
3339                 strcpy(content_type, "text/plain");
3340                 mptr = bmstrcasestr(msg->cm_fields[eMesageText], "Content-type:");
3341                 if (mptr != NULL) {
3342                         char *aptr;
3343                         safestrncpy(content_type, &mptr[13], sizeof content_type);
3344                         striplt(content_type);
3345                         aptr = content_type;
3346                         while (!IsEmptyStr(aptr)) {
3347                                 if ((*aptr == ';')
3348                                     || (*aptr == ' ')
3349                                     || (*aptr == 13)
3350                                     || (*aptr == 10)) {
3351                                         *aptr = 0;
3352                                 }
3353                                 else aptr++;
3354                         }
3355                 }
3356         }
3357
3358         /* Goto the correct room */
3359         room = (recps) ? CCC->room.QRname : SENTITEMS;
3360         MSG_syslog(LOG_DEBUG, "Selected room %s\n", room);
3361         strcpy(hold_rm, CCC->room.QRname);
3362         strcpy(actual_rm, CCC->room.QRname);
3363         if (recps != NULL) {
3364                 strcpy(actual_rm, SENTITEMS);
3365         }
3366
3367         /* If the user is a twit, move to the twit room for posting */
3368         if (TWITDETECT) {
3369                 if (CCC->user.axlevel == AxProbU) {
3370                         strcpy(hold_rm, actual_rm);
3371                         strcpy(actual_rm, config.c_twitroom);
3372                         MSGM_syslog(LOG_DEBUG, "Diverting to twit room\n");
3373                 }
3374         }
3375
3376         /* ...or if this message is destined for Aide> then go there. */
3377         if (!IsEmptyStr(force_room)) {
3378                 strcpy(actual_rm, force_room);
3379         }
3380
3381         MSG_syslog(LOG_INFO, "Final selection: %s (%s)\n", actual_rm, room);
3382         if (strcasecmp(actual_rm, CCC->room.QRname)) {
3383                 /* CtdlGetRoom(&CCC->room, actual_rm); */
3384                 CtdlUserGoto(actual_rm, 0, 1, NULL, NULL);
3385         }
3386
3387         /*
3388          * If this message has no O (room) field, generate one.
3389          */
3390         if (CM_IsEmpty(msg, eOriginalRoom)) {
3391                 CM_SetField(msg, eOriginalRoom, CCC->room.QRname, strlen(CCC->room.QRname));
3392         }
3393
3394         /* Perform "before save" hooks (aborting if any return nonzero) */
3395         MSGM_syslog(LOG_DEBUG, "Performing before-save hooks\n");
3396         if (PerformMessageHooks(msg, EVT_BEFORESAVE) > 0) return(-3);
3397
3398         /*
3399          * If this message has an Exclusive ID, and the room is replication
3400          * checking enabled, then do replication checks.
3401          */
3402         if (DoesThisRoomNeedEuidIndexing(&CCC->room)) {
3403                 ReplicationChecks(msg);
3404         }
3405
3406         /* Save it to disk */
3407         MSGM_syslog(LOG_DEBUG, "Saving to disk\n");
3408         newmsgid = send_message(msg);
3409         if (newmsgid <= 0L) return(-5);
3410
3411         /* Write a supplemental message info record.  This doesn't have to
3412          * be a critical section because nobody else knows about this message
3413          * yet.
3414          */
3415         MSGM_syslog(LOG_DEBUG, "Creating MetaData record\n");
3416         memset(&smi, 0, sizeof(struct MetaData));
3417         smi.meta_msgnum = newmsgid;
3418         smi.meta_refcount = 0;
3419         safestrncpy(smi.meta_content_type, content_type,
3420                     sizeof smi.meta_content_type);
3421
3422         /*
3423          * Measure how big this message will be when rendered as RFC822.
3424          * We do this for two reasons:
3425          * 1. We need the RFC822 length for the new metadata record, so the
3426          *    POP and IMAP services don't have to calculate message lengths
3427          *    while the user is waiting (multiplied by potentially hundreds
3428          *    or thousands of messages).
3429          * 2. If journaling is enabled, we will need an RFC822 version of the
3430          *    message to attach to the journalized copy.
3431          */
3432         if (CCC->redirect_buffer != NULL) {
3433                 MSGM_syslog(LOG_ALERT, "CCC->redirect_buffer is not NULL during message submission!\n");
3434                 abort();
3435         }
3436         CCC->redirect_buffer = NewStrBufPlain(NULL, SIZ);
3437         CtdlOutputPreLoadedMsg(msg, MT_RFC822, HEADERS_ALL, 0, 1, QP_EADDR);
3438         smi.meta_rfc822_length = StrLength(CCC->redirect_buffer);
3439         saved_rfc822_version = CCC->redirect_buffer;
3440         CCC->redirect_buffer = NULL;
3441
3442         PutMetaData(&smi);
3443
3444         /* Now figure out where to store the pointers */
3445         MSGM_syslog(LOG_DEBUG, "Storing pointers\n");
3446
3447         /* If this is being done by the networker delivering a private
3448          * message, we want to BYPASS saving the sender's copy (because there
3449          * is no local sender; it would otherwise go to the Trashcan).
3450          */
3451         if ((!CCC->internal_pgm) || (recps == NULL)) {
3452                 if (CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 1, msg) != 0) {
3453                         MSGM_syslog(LOG_ERR, "ERROR saving message pointer!\n");
3454                         CtdlSaveMsgPointerInRoom(config.c_aideroom, newmsgid, 0, msg);
3455                 }
3456         }
3457
3458         /* For internet mail, drop a copy in the outbound queue room */
3459         if ((recps != NULL) && (recps->num_internet > 0)) {
3460                 CtdlSaveMsgPointerInRoom(SMTP_SPOOLOUT_ROOM, newmsgid, 0, msg);
3461         }
3462
3463         /* If other rooms are specified, drop them there too. */
3464         if ((recps != NULL) && (recps->num_room > 0))
3465                 for (i=0; i<num_tokens(recps->recp_room, '|'); ++i) {
3466                         extract_token(recipient, recps->recp_room, i,
3467                                       '|', sizeof recipient);
3468                         MSG_syslog(LOG_DEBUG, "Delivering to room <%s>\n", recipient);///// xxxx
3469                         CtdlSaveMsgPointerInRoom(recipient, newmsgid, 0, msg);
3470                 }
3471
3472         /* Bump this user's messages posted counter. */
3473         MSGM_syslog(LOG_DEBUG, "Updating user\n");
3474         CtdlGetUserLock(&CCC->user, CCC->curr_user);
3475         CCC->user.posted = CCC->user.posted + 1;
3476         CtdlPutUserLock(&CCC->user);
3477
3478         /* Decide where bounces need to be delivered */
3479         if ((recps != NULL) && (recps->bounce_to != NULL)) {
3480                 safestrncpy(bounce_to, recps->bounce_to, sizeof bounce_to);
3481         }
3482         else if (CCC->logged_in) {
3483                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", CCC->user.fullname, config.c_nodename);
3484         }
3485         else {
3486                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", msg->cm_fields[eAuthor], msg->cm_fields[eNodeName]);
3487         }
3488
3489         /* If this is private, local mail, make a copy in the
3490          * recipient's mailbox and bump the reference count.
3491          */
3492         if ((recps != NULL) && (recps->num_local > 0))
3493                 for (i=0; i<num_tokens(recps->recp_local, '|'); ++i) {
3494                         long recipientlen;
3495                         recipientlen = extract_token(recipient,
3496                                                      recps->recp_local, i,
3497                                                      '|', sizeof recipient);
3498                         MSG_syslog(LOG_DEBUG, "Delivering private local mail to <%s>\n",
3499                                recipient);
3500                         if (CtdlGetUser(&userbuf, recipient) == 0) {
3501                                 CtdlMailboxName(actual_rm, sizeof actual_rm, &userbuf, MAILROOM);
3502                                 CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 0, msg);
3503                                 CtdlBumpNewMailCounter(userbuf.usernum);
3504                                 if (!IsEmptyStr(config.c_funambol_host) || !IsEmptyStr(config.c_pager_program)) {
3505                                         /* Generate a instruction message for the Funambol notification
3506                                          * server, in the same style as the SMTP queue
3507                                          */
3508                                         long instrlen;
3509                                         instr_alloc = 1024;
3510                                         instr = malloc(instr_alloc);
3511                                         instrlen = snprintf(
3512                                                 instr, instr_alloc,
3513                                                 "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
3514                                                 "bounceto|%s\n",
3515                                                 SPOOLMIME,
3516                                                 newmsgid,
3517                                                 (long)time(NULL), //todo: time() is expensive!
3518                                                 bounce_to
3519                                                 );
3520
3521                                         imsg = malloc(sizeof(struct CtdlMessage));
3522                                         memset(imsg, 0, sizeof(struct CtdlMessage));
3523                                         imsg->cm_magic = CTDLMESSAGE_MAGIC;
3524                                         imsg->cm_anon_type = MES_NORMAL;
3525                                         imsg->cm_format_type = FMT_RFC822;
3526                                         CM_SetField(imsg, eMsgSubject, HKEY("QMSG"));
3527                                         CM_SetField(imsg, eAuthor, HKEY("Citadel"));
3528                                         CM_SetField(imsg, eJournal, HKEY("do not journal"));
3529                                         CM_SetAsField(imsg, eMesageText, &instr, instrlen);
3530                                         CM_SetField(imsg, eExtnotify, recipient, recipientlen);
3531                                         CtdlSubmitMsg(imsg, NULL, FNBL_QUEUE_ROOM, 0);
3532                                         CtdlFreeMessage(imsg);
3533                                 }
3534                         }
3535                         else {
3536                                 MSG_syslog(LOG_DEBUG, "No user <%s>\n", recipient);
3537                                 CtdlSaveMsgPointerInRoom(config.c_aideroom, newmsgid, 0, msg);
3538                         }
3539                 }
3540
3541         /* Perform "after save" hooks */
3542         MSGM_syslog(LOG_DEBUG, "Performing after-save hooks\n");
3543
3544         CM_SetFieldLONG(msg, eVltMsgNum, newmsgid);
3545         PerformMessageHooks(msg, EVT_AFTERSAVE);
3546         CM_FlushField(msg, eVltMsgNum);
3547
3548         /* For IGnet mail, we have to save a new copy into the spooler for
3549          * each recipient, with the R and D fields set to the recipient and
3550          * destination-node.  This has two ugly side effects: all other
3551          * recipients end up being unlisted in this recipient's copy of the
3552          * message, and it has to deliver multiple messages to the same
3553          * node.  We'll revisit this again in a year or so when everyone has
3554          * a network spool receiver that can handle the new style messages.
3555          */
3556         if ((recps != NULL) && (recps->num_ignet > 0))
3557                 for (i=0; i<num_tokens(recps->recp_ignet, '|'); ++i) {
3558                         extract_token(recipient, recps->recp_ignet, i,
3559                                       '|', sizeof recipient);
3560
3561                         hold_R = msg->cm_fields[eRecipient];
3562                         hold_D = msg->cm_fields[eDestination];
3563                         msg->cm_fields[eRecipient] = malloc(SIZ);
3564                         msg->cm_fields[eDestination] = malloc(128);
3565                         extract_token(msg->cm_fields[eRecipient], recipient, 0, '@', SIZ);
3566                         extract_token(msg->cm_fields[eDestination], recipient, 1, '@', 128);
3567
3568                         serialize_message(&smr, msg);
3569                         if (smr.len > 0) {
3570                                 snprintf(submit_filename, sizeof submit_filename,
3571                                          "%s/netmail.%04lx.%04x.%04x",
3572                                          ctdl_netin_dir,
3573                                          (long) getpid(), CCC->cs_pid, ++seqnum);
3574                                 network_fp = fopen(submit_filename, "wb+");
3575                                 if (network_fp != NULL) {
3576                                         rv = fwrite(smr.ser, smr.len, 1, network_fp);
3577                                         if (rv == -1) {
3578                                                 MSG_syslog(LOG_EMERG, "CtdlSubmitMsg(): Couldn't write network spool file: %s\n",
3579                                                            strerror(errno));
3580                                         }
3581                                         fclose(network_fp);
3582                                 }
3583                                 free(smr.ser);
3584                         }
3585
3586                         free(msg->cm_fields[eRecipient]);
3587                         free(msg->cm_fields[eDestination]);
3588                         msg->cm_fields[eRecipient] = hold_R;
3589                         msg->cm_fields[eDestination] = hold_D;
3590                 }
3591
3592         /* Go back to the room we started from */
3593         MSG_syslog(LOG_DEBUG, "Returning to original room %s\n", hold_rm);
3594         if (strcasecmp(hold_rm, CCC->room.QRname))
3595                 CtdlUserGoto(hold_rm, 0, 1, NULL, NULL);
3596
3597         /* For internet mail, generate delivery instructions.
3598          * Yes, this is recursive.  Deal with it.  Infinite recursion does
3599          * not happen because the delivery instructions message does not
3600          * contain a recipient.
3601          */
3602         if ((recps != NULL) && (recps->num_internet > 0)) {
3603                 StrBuf *SpoolMsg = NewStrBuf();
3604                 long nTokens;
3605
3606                 MSGM_syslog(LOG_DEBUG, "Generating delivery instructions\n");
3607
3608                 StrBufPrintf(SpoolMsg,
3609                              "Content-type: "SPOOLMIME"\n"
3610                              "\n"
3611                              "msgid|%ld\n"
3612                              "submitted|%ld\n"
3613                              "bounceto|%s\n",
3614                              newmsgid,
3615                              (long)time(NULL),
3616                              bounce_to);
3617
3618                 if (recps->envelope_from != NULL) {
3619                         StrBufAppendBufPlain(SpoolMsg, HKEY("envelope_from|"), 0);
3620                         StrBufAppendBufPlain(SpoolMsg, recps->envelope_from, -1, 0);
3621                         StrBufAppendBufPlain(SpoolMsg, HKEY("\n"), 0);
3622                 }
3623                 if (recps->sending_room != NULL) {
3624                         StrBufAppendBufPlain(SpoolMsg, HKEY("source_room|"), 0);
3625                         StrBufAppendBufPlain(SpoolMsg, recps->sending_room, -1, 0);
3626                         StrBufAppendBufPlain(SpoolMsg, HKEY("\n"), 0);
3627                 }
3628
3629                 nTokens = num_tokens(recps->recp_internet, '|');
3630                 for (i = 0; i < nTokens; i++) {
3631                         long len;
3632                         len = extract_token(recipient, recps->recp_internet, i, '|', sizeof recipient);
3633                         if (len > 0) {
3634                                 StrBufAppendBufPlain(SpoolMsg, HKEY("remote|"), 0);
3635                                 StrBufAppendBufPlain(SpoolMsg, recipient, len, 0);
3636                                 StrBufAppendBufPlain(SpoolMsg, HKEY("|0||\n"), 0);
3637                         }
3638                 }
3639
3640                 imsg = malloc(sizeof(struct CtdlMessage));
3641                 memset(imsg, 0, sizeof(struct CtdlMessage));
3642                 imsg->cm_magic = CTDLMESSAGE_MAGIC;
3643                 imsg->cm_anon_type = MES_NORMAL;
3644                 imsg->cm_format_type = FMT_RFC822;
3645                 imsg->cm_fields[eMsgSubject] = strdup("QMSG");
3646                 imsg->cm_fields[eAuthor] = strdup("Citadel");
3647                 imsg->cm_fields[eJournal] = strdup("do not journal");
3648                 imsg->cm_fields[eMesageText] = SmashStrBuf(&SpoolMsg);  /* imsg owns this memory now */
3649                 CtdlSubmitMsg(imsg, NULL, SMTP_SPOOLOUT_ROOM, QP_EADDR);
3650                 CtdlFreeMessage(imsg);
3651         }
3652
3653         /*
3654          * Any addresses to harvest for someone's address book?
3655          */
3656         if ( (CCC->logged_in) && (recps != NULL) ) {
3657                 collected_addresses = harvest_collected_addresses(msg);
3658         }
3659
3660         if (collected_addresses != NULL) {
3661                 aptr = (struct addresses_to_be_filed *)
3662                         malloc(sizeof(struct addresses_to_be_filed));
3663                 CtdlMailboxName(actual_rm, sizeof actual_rm,
3664                                 &CCC->user, USERCONTACTSROOM);
3665                 aptr->roomname = strdup(actual_rm);
3666                 aptr->collected_addresses = collected_addresses;
3667                 begin_critical_section(S_ATBF);
3668                 aptr->next = atbf;
3669                 atbf = aptr;
3670                 end_critical_section(S_ATBF);
3671         }
3672
3673         /*
3674          * Determine whether this message qualifies for journaling.
3675          */
3676         if (!CM_IsEmpty(msg, eJournal)) {
3677                 qualified_for_journaling = 0;
3678         }
3679         else {
3680                 if (recps == NULL) {
3681                         qualified_for_journaling = config.c_journal_pubmsgs;
3682                 }
3683                 else if (recps->num_local + recps->num_ignet + recps->num_internet > 0) {
3684                         qualified_for_journaling = config.c_journal_email;
3685                 }
3686                 else {
3687                         qualified_for_journaling = config.c_journal_pubmsgs;
3688                 }
3689         }
3690
3691         /*
3692          * Do we have to perform journaling?  If so, hand off the saved
3693          * RFC822 version will be handed off to the journaler for background
3694          * submit.  Otherwise, we have to free the memory ourselves.
3695          */
3696         if (saved_rfc822_version != NULL) {
3697                 if (qualified_for_journaling) {
3698                         JournalBackgroundSubmit(msg, saved_rfc822_version, recps);
3699                 }
3700                 else {
3701                         FreeStrBuf(&saved_rfc822_version);
3702                 }
3703         }
3704
3705         /* Done. */
3706         return(newmsgid);
3707 }
3708
3709
3710 /*
3711  * Convenience function for generating small administrative messages.
3712  */
3713 void quickie_message(const char *from,
3714                      const char *fromaddr,
3715                      const char *to,
3716                      char *room,
3717                      const char *text,
3718                      int format_type,
3719                      const char *subject)
3720 {
3721         struct CtdlMessage *msg;
3722         struct recptypes *recp = NULL;
3723
3724         msg = malloc(sizeof(struct CtdlMessage));
3725         memset(msg, 0, sizeof(struct CtdlMessage));
3726         msg->cm_magic = CTDLMESSAGE_MAGIC;
3727         msg->cm_anon_type = MES_NORMAL;
3728         msg->cm_format_type = format_type;
3729
3730         if (from != NULL) {
3731                 msg->cm_fields[eAuthor] = strdup(from);
3732         }
3733         else if (fromaddr != NULL) {
3734                 msg->cm_fields[eAuthor] = strdup(fromaddr);
3735                 if (strchr(msg->cm_fields[eAuthor], '@')) {
3736                         *strchr(msg->cm_fields[eAuthor], '@') = 0;
3737                 }
3738         }
3739         else {
3740                 msg->cm_fields[eAuthor] = strdup("Citadel");
3741         }
3742
3743         if (fromaddr != NULL) msg->cm_fields[erFc822Addr] = strdup(fromaddr);
3744         if (room != NULL) msg->cm_fields[eOriginalRoom] = strdup(room);
3745         msg->cm_fields[eNodeName] = strdup(NODENAME);
3746         if (to != NULL) {
3747                 msg->cm_fields[eRecipient] = strdup(to);
3748                 recp = validate_recipients(to, NULL, 0);
3749         }
3750         if (subject != NULL) {
3751                 msg->cm_fields[eMsgSubject] = strdup(subject);
3752         }
3753         msg->cm_fields[eMesageText] = strdup(text);
3754
3755         CtdlSubmitMsg(msg, recp, room, 0);
3756         CtdlFreeMessage(msg);
3757         if (recp != NULL) free_recipients(recp);
3758 }
3759
3760 void flood_protect_quickie_message(const char *from,
3761                                    const char *fromaddr,
3762                                    const char *to,
3763                                    char *room,
3764                                    const char *text,
3765                                    int format_type,
3766                                    const char *subject,
3767                                    int nCriterions,
3768                                    const char **CritStr,
3769                                    long *CritStrLen,
3770                                    long ccid,
3771                                    long ioid,
3772                                    time_t NOW)
3773 {
3774         int i;
3775         u_char rawdigest[MD5_DIGEST_LEN];
3776         struct MD5Context md5context;
3777         StrBuf *guid;
3778         char timestamp[64];
3779         long tslen;
3780         time_t tsday = NOW / (8*60*60); /* just care for a day... */
3781
3782         tslen = snprintf(timestamp, sizeof(timestamp), "%ld", tsday);
3783         MD5Init(&md5context);
3784
3785         for (i = 0; i < nCriterions; i++)
3786                 MD5Update(&md5context,
3787                           (const unsigned char*)CritStr[i], CritStrLen[i]);
3788         MD5Update(&md5context,
3789                   (const unsigned char*)timestamp, tslen);
3790         MD5Final(rawdigest, &md5context);
3791
3792         guid = NewStrBufPlain(NULL,
3793                               MD5_DIGEST_LEN * 2 + 12);
3794         StrBufHexEscAppend(guid, NULL, rawdigest, MD5_DIGEST_LEN);
3795         StrBufAppendBufPlain(guid, HKEY("_fldpt"), 0);
3796         if (StrLength(guid) > 40)
3797                 StrBufCutAt(guid, 40, NULL);
3798
3799         if (CheckIfAlreadySeen("FPAideMessage",
3800                                guid,
3801                                NOW,
3802                                tsday,
3803                                eUpdate,
3804                                ccid,
3805                                ioid)!= 0)
3806         {
3807                 FreeStrBuf(&guid);
3808                 /* yes, we did. flood protection kicks in. */
3809                 syslog(LOG_DEBUG,
3810                        "not sending message again\n");
3811                 return;
3812         }
3813         FreeStrBuf(&guid);
3814         /* no, this message isn't sent recently; go ahead. */
3815         quickie_message(from,
3816                         fromaddr,
3817                         to,
3818                         room,
3819                         text,
3820                         format_type,
3821                         subject);
3822 }
3823
3824
3825 /*
3826  * Back end function used by CtdlMakeMessage() and similar functions
3827  */
3828 StrBuf *CtdlReadMessageBodyBuf(char *terminator,        /* token signalling EOT */
3829                                long tlen,
3830                                size_t maxlen,           /* maximum message length */
3831                                StrBuf *exist,           /* if non-null, append to it;
3832                                                            exist is ALWAYS freed  */
3833                                int crlf,                /* CRLF newlines instead of LF */
3834                                int *sock                /* socket handle or 0 for this session's client socket */
3835         )
3836 {
3837         StrBuf *Message;
3838         StrBuf *LineBuf;
3839         int flushing = 0;
3840         int finished = 0;
3841         int dotdot = 0;
3842
3843         LineBuf = NewStrBufPlain(NULL, SIZ);
3844         if (exist == NULL) {
3845                 Message = NewStrBufPlain(NULL, 4 * SIZ);
3846         }
3847         else {
3848                 Message = NewStrBufDup(exist);
3849         }
3850
3851         /* Do we need to change leading ".." to "." for SMTP escaping? */
3852         if ((tlen == 1) && (*terminator == '.')) {
3853                 dotdot = 1;
3854         }
3855
3856         /* read in the lines of message text one by one */
3857         do {
3858                 if (sock != NULL) {
3859                         if ((CtdlSockGetLine(sock, LineBuf, 5) < 0) ||
3860                             (*sock == -1))
3861                                 finished = 1;
3862                 }
3863                 else {
3864                         if (CtdlClientGetLine(LineBuf) < 0) finished = 1;
3865                 }
3866                 if ((StrLength(LineBuf) == tlen) &&
3867                     (!strcmp(ChrPtr(LineBuf), terminator)))
3868                         finished = 1;
3869
3870                 if ( (!flushing) && (!finished) ) {
3871                         if (crlf) {
3872                                 StrBufAppendBufPlain(LineBuf, HKEY("\r\n"), 0);
3873                         }
3874                         else {
3875                                 StrBufAppendBufPlain(LineBuf, HKEY("\n"), 0);
3876                         }
3877
3878                         /* Unescape SMTP-style input of two dots at the beginning of the line */
3879                         if ((dotdot) &&
3880                             (StrLength(LineBuf) == 2) &&
3881                             (!strcmp(ChrPtr(LineBuf), "..")))
3882                         {
3883                                 StrBufCutLeft(LineBuf, 1);
3884                         }
3885
3886                         StrBufAppendBuf(Message, LineBuf, 0);
3887                 }
3888
3889                 /* if we've hit the max msg length, flush the rest */
3890                 if (StrLength(Message) >= maxlen) flushing = 1;
3891
3892         } while (!finished);
3893         FreeStrBuf(&LineBuf);
3894         return Message;
3895 }
3896
3897 void DeleteAsyncMsg(ReadAsyncMsg **Msg)
3898 {
3899         if (*Msg == NULL)
3900                 return;
3901         FreeStrBuf(&(*Msg)->MsgBuf);
3902
3903         free(*Msg);
3904         *Msg = NULL;
3905 }
3906
3907 ReadAsyncMsg *NewAsyncMsg(const char *terminator,       /* token signalling EOT */
3908                           long tlen,
3909                           size_t maxlen,                /* maximum message length */
3910                           size_t expectlen,             /* if we expect a message, how long should it be? */
3911                           StrBuf *exist,                /* if non-null, append to it;
3912                                                            exist is ALWAYS freed  */
3913                           long eLen,                    /* length of exist */
3914                           int crlf                      /* CRLF newlines instead of LF */
3915         )
3916 {
3917         ReadAsyncMsg *NewMsg;
3918
3919         NewMsg = (ReadAsyncMsg *)malloc(sizeof(ReadAsyncMsg));
3920         memset(NewMsg, 0, sizeof(ReadAsyncMsg));
3921
3922         if (exist == NULL) {
3923                 long len;
3924
3925                 if (expectlen == 0) {
3926                         len = 4 * SIZ;
3927                 }
3928                 else {
3929                         len = expectlen + 10;
3930                 }
3931                 NewMsg->MsgBuf = NewStrBufPlain(NULL, len);
3932         }
3933         else {
3934                 NewMsg->MsgBuf = NewStrBufDup(exist);
3935         }
3936         /* Do we need to change leading ".." to "." for SMTP escaping? */
3937         if ((tlen == 1) && (*terminator == '.')) {
3938                 NewMsg->dodot = 1;
3939         }
3940
3941         NewMsg->terminator = terminator;
3942         NewMsg->tlen = tlen;
3943
3944         NewMsg->maxlen = maxlen;
3945
3946         NewMsg->crlf = crlf;
3947
3948         return NewMsg;
3949 }
3950
3951 /*
3952  * Back end function used by CtdlMakeMessage() and similar functions
3953  */
3954 eReadState CtdlReadMessageBodyAsync(AsyncIO *IO)
3955 {
3956         ReadAsyncMsg *ReadMsg;
3957         int MsgFinished = 0;
3958         eReadState Finished = eMustReadMore;
3959
3960 #ifdef BIGBAD_IODBG
3961         char fn [SIZ];
3962         FILE *fd;
3963         const char *pch = ChrPtr(IO->SendBuf.Buf);
3964         const char *pchh = IO->SendBuf.ReadWritePointer;
3965         long nbytes;
3966
3967         if (pchh == NULL)
3968                 pchh = pch;
3969
3970         nbytes = StrLength(IO->SendBuf.Buf) - (pchh - pch);
3971         snprintf(fn, SIZ, "/tmp/foolog_ev_%s.%d",
3972                  ((CitContext*)(IO->CitContext))->ServiceName,
3973                  IO->SendBuf.fd);
3974
3975         fd = fopen(fn, "a+");
3976 #endif
3977
3978         ReadMsg = IO->ReadMsg;
3979
3980         /* read in the lines of message text one by one */
3981         do {
3982                 Finished = StrBufChunkSipLine(IO->IOBuf, &IO->RecvBuf);
3983
3984                 switch (Finished) {
3985                 case eMustReadMore: /// read new from socket...
3986 #ifdef BIGBAD_IODBG
3987                         if (IO->RecvBuf.ReadWritePointer != NULL) {
3988                                 nbytes = StrLength(IO->RecvBuf.Buf) - (IO->RecvBuf.ReadWritePointer - ChrPtr(IO->RecvBuf.Buf));
3989                                 fprintf(fd, "Read; Line unfinished: %ld Bytes still in buffer [", nbytes);
3990
3991                                 fwrite(IO->RecvBuf.ReadWritePointer, nbytes, 1, fd);
3992
3993                                 fprintf(fd, "]\n");
3994                         } else {
3995                                 fprintf(fd, "BufferEmpty! \n");
3996                         }
3997                         fclose(fd);
3998 #endif
3999                         return Finished;
4000                     break;
4001                 case eBufferNotEmpty: /* shouldn't happen... */
4002                 case eReadSuccess: /// done for now...
4003                     break;
4004                 case eReadFail: /// WHUT?
4005                     ///todo: shut down!
4006                         break;
4007                 }
4008
4009
4010                 if ((StrLength(IO->IOBuf) == ReadMsg->tlen) &&
4011                     (!strcmp(ChrPtr(IO->IOBuf), ReadMsg->terminator))) {
4012                         MsgFinished = 1;
4013 #ifdef BIGBAD_IODBG
4014                         fprintf(fd, "found Terminator; Message Size: %d\n", StrLength(ReadMsg->MsgBuf));
4015 #endif
4016                 }
4017                 else if (!ReadMsg->flushing) {
4018
4019 #ifdef BIGBAD_IODBG
4020                         fprintf(fd, "Read Line: [%d][%s]\n", StrLength(IO->IOBuf), ChrPtr(IO->IOBuf));
4021 #endif
4022
4023                         /* Unescape SMTP-style input of two dots at the beginning of the line */
4024                         if ((ReadMsg->dodot) &&
4025                             (StrLength(IO->IOBuf) == 2) &&  /* TODO: do we just unescape lines with two dots or any line? */
4026                             (!strcmp(ChrPtr(IO->IOBuf), "..")))
4027                         {
4028 #ifdef BIGBAD_IODBG
4029                                 fprintf(fd, "UnEscaped!\n");
4030 #endif
4031                                 StrBufCutLeft(IO->IOBuf, 1);
4032                         }
4033
4034                         if (ReadMsg->crlf) {
4035                                 StrBufAppendBufPlain(IO->IOBuf, HKEY("\r\n"), 0);
4036                         }
4037                         else {
4038                                 StrBufAppendBufPlain(IO->IOBuf, HKEY("\n"), 0);
4039                         }
4040
4041                         StrBufAppendBuf(ReadMsg->MsgBuf, IO->IOBuf, 0);
4042                 }
4043
4044                 /* if we've hit the max msg length, flush the rest */
4045                 if (StrLength(ReadMsg->MsgBuf) >= ReadMsg->maxlen) ReadMsg->flushing = 1;
4046
4047         } while (!MsgFinished);
4048
4049 #ifdef BIGBAD_IODBG
4050         fprintf(fd, "Done with reading; %s.\n, ",
4051                 (MsgFinished)?"Message Finished": "FAILED");
4052         fclose(fd);
4053 #endif
4054         if (MsgFinished)
4055                 return eReadSuccess;
4056         else
4057                 return eAbort;
4058 }
4059
4060
4061 /*
4062  * Back end function used by CtdlMakeMessage() and similar functions
4063  */
4064 char *CtdlReadMessageBody(char *terminator,     /* token signalling EOT */
4065                           long tlen,
4066                           size_t maxlen,                /* maximum message length */
4067                           StrBuf *exist,                /* if non-null, append to it;
4068                                                    exist is ALWAYS freed  */
4069                           int crlf,             /* CRLF newlines instead of LF */
4070                           int *sock             /* socket handle or 0 for this session's client socket */
4071         )
4072 {
4073         StrBuf *Message;
4074
4075         Message = CtdlReadMessageBodyBuf(terminator,
4076                                          tlen,
4077                                          maxlen,
4078                                          exist,
4079                                          crlf,
4080                                          sock);
4081         if (Message == NULL)
4082                 return NULL;
4083         else
4084                 return SmashStrBuf(&Message);
4085 }
4086
4087
4088 /*
4089  * Build a binary message to be saved on disk.
4090  * (NOTE: if you supply 'preformatted_text', the buffer you give it
4091  * will become part of the message.  This means you are no longer
4092  * responsible for managing that memory -- it will be freed along with
4093  * the rest of the fields when CtdlFreeMessage() is called.)
4094  */
4095
4096 struct CtdlMessage *CtdlMakeMessage(
4097         struct ctdluser *author,        /* author's user structure */
4098         char *recipient,                /* NULL if it's not mail */
4099         char *recp_cc,                  /* NULL if it's not mail */
4100         char *room,                     /* room where it's going */
4101         int type,                       /* see MES_ types in header file */
4102         int format_type,                /* variformat, plain text, MIME... */
4103         char *fake_name,                /* who we're masquerading as */
4104         char *my_email,                 /* which of my email addresses to use (empty is ok) */
4105         char *subject,                  /* Subject (optional) */
4106         char *supplied_euid,            /* ...or NULL if this is irrelevant */
4107         char *preformatted_text,        /* ...or NULL to read text from client */
4108         char *references                /* Thread references */
4109         ) {
4110         char dest_node[256];
4111         char buf[1024];
4112         struct CtdlMessage *msg;
4113         StrBuf *FakeAuthor;
4114         StrBuf *FakeEncAuthor = NULL;
4115
4116         msg = malloc(sizeof(struct CtdlMessage));
4117         memset(msg, 0, sizeof(struct CtdlMessage));
4118         msg->cm_magic = CTDLMESSAGE_MAGIC;
4119         msg->cm_anon_type = type;
4120         msg->cm_format_type = format_type;
4121
4122         /* Don't confuse the poor folks if it's not routed mail. */
4123         strcpy(dest_node, "");
4124
4125         if (recipient != NULL) striplt(recipient);
4126         if (recp_cc != NULL) striplt(recp_cc);
4127
4128         /* Path or Return-Path */
4129         if (my_email == NULL) my_email = "";
4130
4131         if (!IsEmptyStr(my_email)) {
4132                 msg->cm_fields[eMessagePath] = strdup(my_email);
4133         }
4134         else {
4135                 snprintf(buf, sizeof buf, "%s", author->fullname);
4136                 msg->cm_fields[eMessagePath] = strdup(buf);
4137         }
4138         convert_spaces_to_underscores(msg->cm_fields[eMessagePath]);
4139
4140         snprintf(buf, sizeof buf, "%ld", (long)time(NULL));     /* timestamp */
4141         msg->cm_fields[eTimestamp] = strdup(buf);
4142
4143         if ((fake_name != NULL) && (fake_name[0])) {            /* author */
4144                 FakeAuthor = NewStrBufPlain (fake_name, -1);
4145         }
4146         else {
4147                 FakeAuthor = NewStrBufPlain (author->fullname, -1);
4148         }
4149         StrBufRFC2047encode(&FakeEncAuthor, FakeAuthor);
4150         msg->cm_fields[eAuthor] = SmashStrBuf(&FakeEncAuthor);
4151         FreeStrBuf(&FakeAuthor);
4152
4153         if (CC->room.QRflags & QR_MAILBOX) {            /* room */
4154                 msg->cm_fields[eOriginalRoom] = strdup(&CC->room.QRname[11]);
4155         }
4156         else {
4157                 msg->cm_fields[eOriginalRoom] = strdup(CC->room.QRname);
4158         }
4159
4160         msg->cm_fields[eNodeName] = strdup(NODENAME);           /* nodename */
4161         msg->cm_fields[eHumanNode] = strdup(HUMANNODE);         /* hnodename */
4162
4163         if ((recipient != NULL) && (recipient[0] != 0)) {
4164                 msg->cm_fields[eRecipient] = strdup(recipient);
4165         }
4166         if ((recp_cc != NULL) && (recp_cc[0] != 0)) {
4167                 msg->cm_fields[eCarbonCopY] = strdup(recp_cc);
4168         }
4169         if (dest_node[0] != 0) {
4170                 msg->cm_fields[eDestination] = strdup(dest_node);
4171         }
4172
4173         if (!IsEmptyStr(my_email)) {
4174                 msg->cm_fields[erFc822Addr] = strdup(my_email);
4175         }
4176         else if ( (author == &CC->user) && (!IsEmptyStr(CC->cs_inet_email)) ) {
4177                 msg->cm_fields[erFc822Addr] = strdup(CC->cs_inet_email);
4178         }
4179
4180         if (subject != NULL) {
4181                 long length;
4182                 striplt(subject);
4183                 length = strlen(subject);
4184                 if (length > 0) {
4185                         long i;
4186                         long IsAscii;
4187                         IsAscii = -1;
4188                         i = 0;
4189                         while ((subject[i] != '\0') &&
4190                                (IsAscii = isascii(subject[i]) != 0 ))
4191                                 i++;
4192                         if (IsAscii != 0)
4193                                 msg->cm_fields[eMsgSubject] = strdup(subject);
4194                         else /* ok, we've got utf8 in the string. */
4195                         {
4196                                 msg->cm_fields[eMsgSubject] = rfc2047encode(subject, length);
4197                         }
4198
4199                 }
4200         }
4201
4202         if (supplied_euid != NULL) {
4203                 msg->cm_fields[eExclusiveID] = strdup(supplied_euid);
4204         }
4205
4206         if ((references != NULL) && (!IsEmptyStr(references))) {
4207                 if (msg->cm_fields[eWeferences] != NULL)
4208                         free(msg->cm_fields[eWeferences]);
4209                 msg->cm_fields[eWeferences] = strdup(references);
4210         }
4211
4212         if (preformatted_text != NULL) {
4213                 msg->cm_fields[eMesageText] = preformatted_text;
4214         }
4215         else {
4216                 msg->cm_fields[eMesageText] = CtdlReadMessageBody(HKEY("000"), config.c_maxmsglen, NULL, 0, 0);
4217         }
4218
4219         return(msg);
4220 }
4221
4222 /*
4223  * Check to see whether we have permission to post a message in the current
4224  * room.  Returns a *CITADEL ERROR CODE* and puts a message in errmsgbuf, or
4225  * returns 0 on success.
4226  */
4227 int CtdlDoIHavePermissionToPostInThisRoom(
4228         char *errmsgbuf,
4229         size_t n,
4230         const char* RemoteIdentifier,
4231         int PostPublic,
4232         int is_reply
4233         ) {
4234         int ra;
4235
4236         if (!(CC->logged_in) &&
4237             (PostPublic == POST_LOGGED_IN)) {
4238                 snprintf(errmsgbuf, n, "Not logged in.");
4239                 return (ERROR + NOT_LOGGED_IN);
4240         }
4241         else if (PostPublic == CHECK_EXISTANCE) {
4242                 return (0); // We're Evaling whether a recipient exists
4243         }
4244         else if (!(CC->logged_in)) {
4245
4246                 if ((CC->room.QRflags & QR_READONLY)) {
4247                         snprintf(errmsgbuf, n, "Not logged in.");
4248                         return (ERROR + NOT_LOGGED_IN);
4249                 }
4250                 if (CC->room.QRflags2 & QR2_MODERATED) {
4251                         snprintf(errmsgbuf, n, "Not logged in Moderation feature not yet implemented!");
4252                         return (ERROR + NOT_LOGGED_IN);
4253                 }
4254                 if ((PostPublic!=POST_LMTP) &&(CC->room.QRflags2 & QR2_SMTP_PUBLIC) == 0) {
4255
4256                         return CtdlNetconfigCheckRoomaccess(errmsgbuf, n, RemoteIdentifier);
4257                 }
4258                 return (0);
4259
4260         }
4261
4262         if ((CC->user.axlevel < AxProbU)
4263             && ((CC->room.QRflags & QR_MAILBOX) == 0)) {
4264                 snprintf(errmsgbuf, n, "Need to be validated to enter (except in %s> to sysop)", MAILROOM);
4265                 return (ERROR + HIGHER_ACCESS_REQUIRED);
4266         }
4267
4268         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
4269
4270         if (ra & UA_POSTALLOWED) {
4271                 strcpy(errmsgbuf, "OK to post or reply here");
4272                 return(0);
4273         }
4274
4275         if ( (ra & UA_REPLYALLOWED) && (is_reply) ) {
4276                 /*
4277                  * To be thorough, we ought to check to see if the message they are
4278                  * replying to is actually a valid one in this room, but unless this
4279                  * actually becomes a problem we'll go with high performance instead.
4280                  */
4281                 strcpy(errmsgbuf, "OK to reply here");
4282                 return(0);
4283         }
4284
4285         if ( (ra & UA_REPLYALLOWED) && (!is_reply) ) {
4286                 /* Clarify what happened with a better error message */
4287                 snprintf(errmsgbuf, n, "You may only reply to existing messages here.");
4288                 return (ERROR + HIGHER_ACCESS_REQUIRED);
4289         }
4290
4291         snprintf(errmsgbuf, n, "Higher access is required to post in this room.");
4292         return (ERROR + HIGHER_ACCESS_REQUIRED);
4293
4294 }
4295
4296
4297 /*
4298  * Check to see if the specified user has Internet mail permission
4299  * (returns nonzero if permission is granted)
4300  */
4301 int CtdlCheckInternetMailPermission(struct ctdluser *who) {
4302
4303         /* Do not allow twits to send Internet mail */
4304         if (who->axlevel <= AxProbU) return(0);
4305
4306         /* Globally enabled? */
4307         if (config.c_restrict == 0) return(1);
4308
4309         /* User flagged ok? */
4310         if (who->flags & US_INTERNET) return(2);
4311
4312         /* Admin level access? */
4313         if (who->axlevel >= AxAideU) return(3);
4314
4315         /* No mail for you! */
4316         return(0);
4317 }
4318
4319
4320 /*
4321  * Validate recipients, count delivery types and errors, and handle aliasing
4322  * FIXME check for dupes!!!!!
4323  *
4324  * Returns 0 if all addresses are ok, ret->num_error = -1 if no addresses
4325  * were specified, or the number of addresses found invalid.
4326  *
4327  * Caller needs to free the result using free_recipients()
4328  */
4329 struct recptypes *validate_recipients(const char *supplied_recipients,
4330                                       const char *RemoteIdentifier,
4331                                       int Flags) {
4332         struct CitContext *CCC = CC;
4333         struct recptypes *ret;
4334         char *recipients = NULL;
4335         char *org_recp;
4336         char this_recp[256];
4337         char this_recp_cooked[256];
4338         char append[SIZ];
4339         long len;
4340         int num_recps = 0;
4341         int i, j;
4342         int mailtype;
4343         int invalid;
4344         struct ctdluser tempUS;
4345         struct ctdlroom tempQR;
4346         struct ctdlroom tempQR2;
4347         int err = 0;
4348         char errmsg[SIZ];
4349         int in_quotes = 0;
4350
4351         /* Initialize */
4352         ret = (struct recptypes *) malloc(sizeof(struct recptypes));
4353         if (ret == NULL) return(NULL);
4354
4355         /* Set all strings to null and numeric values to zero */
4356         memset(ret, 0, sizeof(struct recptypes));
4357
4358         if (supplied_recipients == NULL) {
4359                 recipients = strdup("");
4360         }
4361         else {
4362                 recipients = strdup(supplied_recipients);
4363         }
4364
4365         /* Allocate some memory.  Yes, this allocates 500% more memory than we will
4366          * actually need, but it's healthier for the heap than doing lots of tiny
4367          * realloc() calls instead.
4368          */
4369         len = strlen(recipients) + 1024;
4370         ret->errormsg = malloc(len);
4371         ret->recp_local = malloc(len);
4372         ret->recp_internet = malloc(len);
4373         ret->recp_ignet = malloc(len);
4374         ret->recp_room = malloc(len);
4375         ret->display_recp = malloc(len);
4376         ret->recp_orgroom = malloc(len);
4377         org_recp = malloc(len);
4378
4379         ret->errormsg[0] = 0;
4380         ret->recp_local[0] = 0;
4381         ret->recp_internet[0] = 0;
4382         ret->recp_ignet[0] = 0;
4383         ret->recp_room[0] = 0;
4384         ret->recp_orgroom[0] = 0;
4385         ret->display_recp[0] = 0;
4386
4387         ret->recptypes_magic = RECPTYPES_MAGIC;
4388
4389         /* Change all valid separator characters to commas */
4390         for (i=0; !IsEmptyStr(&recipients[i]); ++i) {
4391                 if ((recipients[i] == ';') || (recipients[i] == '|')) {
4392                         recipients[i] = ',';
4393                 }
4394         }
4395
4396         /* Now start extracting recipients... */
4397
4398         while (!IsEmptyStr(recipients)) {
4399                 for (i=0; i<=strlen(recipients); ++i) {
4400                         if (recipients[i] == '\"') in_quotes = 1 - in_quotes;
4401                         if ( ( (recipients[i] == ',') && (!in_quotes) ) || (recipients[i] == 0) ) {
4402                                 safestrncpy(this_recp, recipients, i+1);
4403                                 this_recp[i] = 0;
4404                                 if (recipients[i] == ',') {
4405                                         strcpy(recipients, &recipients[i+1]);
4406                                 }
4407                                 else {
4408                                         strcpy(recipients, "");
4409                                 }
4410                                 break;
4411                         }
4412                 }
4413
4414                 striplt(this_recp);
4415                 if (IsEmptyStr(this_recp))
4416                         break;
4417                 MSG_syslog(LOG_DEBUG, "Evaluating recipient #%d: %s\n", num_recps, this_recp);
4418                 ++num_recps;
4419
4420                 strcpy(org_recp, this_recp);
4421                 alias(this_recp);
4422                 alias(this_recp);
4423                 mailtype = alias(this_recp);
4424
4425                 for (j = 0; !IsEmptyStr(&this_recp[j]); ++j) {
4426                         if (this_recp[j]=='_') {
4427                                 this_recp_cooked[j] = ' ';
4428                         }
4429                         else {
4430                                 this_recp_cooked[j] = this_recp[j];
4431                         }
4432                 }
4433                 this_recp_cooked[j] = '\0';
4434                 invalid = 0;
4435                 errmsg[0] = 0;
4436                 switch(mailtype) {
4437                 case MES_LOCAL:
4438                         if (!strcasecmp(this_recp, "sysop")) {
4439                                 ++ret->num_room;
4440                                 strcpy(this_recp, config.c_aideroom);
4441                                 if (!IsEmptyStr(ret->recp_room)) {
4442                                         strcat(ret->recp_room, "|");
4443                                 }
4444                                 strcat(ret->recp_room, this_recp);
4445                         }
4446                         else if ( (!strncasecmp(this_recp, "room_", 5))
4447                                   && (!CtdlGetRoom(&tempQR, &this_recp_cooked[5])) ) {
4448
4449                                 /* Save room so we can restore it later */
4450                                 tempQR2 = CCC->room;
4451                                 CCC->room = tempQR;
4452
4453                                 /* Check permissions to send mail to this room */
4454                                 err = CtdlDoIHavePermissionToPostInThisRoom(
4455                                         errmsg,
4456                                         sizeof errmsg,
4457                                         RemoteIdentifier,
4458                                         Flags,
4459                                         0                       /* 0 = not a reply */
4460                                         );
4461                                 if (err)
4462                                 {
4463                                         ++ret->num_error;
4464                                         invalid = 1;
4465                                 }
4466                                 else {
4467                                         ++ret->num_room;
4468                                         if (!IsEmptyStr(ret->recp_room)) {
4469                                                 strcat(ret->recp_room, "|");
4470                                         }
4471                                         strcat(ret->recp_room, &this_recp_cooked[5]);
4472
4473                                         if (!IsEmptyStr(ret->recp_orgroom)) {
4474                                                 strcat(ret->recp_orgroom, "|");
4475                                         }
4476                                         strcat(ret->recp_orgroom, org_recp);
4477
4478                                 }
4479
4480                                 /* Restore room in case something needs it */
4481                                 CCC->room = tempQR2;
4482
4483                         }
4484                         else if (CtdlGetUser(&tempUS, this_recp) == 0) {
4485                                 ++ret->num_local;
4486                                 strcpy(this_recp, tempUS.fullname);
4487                                 if (!IsEmptyStr(ret->recp_local)) {
4488                                         strcat(ret->recp_local, "|");
4489                                 }
4490                                 strcat(ret->recp_local, this_recp);
4491                         }
4492                         else if (CtdlGetUser(&tempUS, this_recp_cooked) == 0) {
4493                                 ++ret->num_local;
4494                                 strcpy(this_recp, tempUS.fullname);
4495                                 if (!IsEmptyStr(ret->recp_local)) {
4496                                         strcat(ret->recp_local, "|");
4497                                 }
4498                                 strcat(ret->recp_local, this_recp);
4499                         }
4500                         else {
4501                                 ++ret->num_error;
4502                                 invalid = 1;
4503                         }
4504                         break;
4505                 case MES_INTERNET:
4506                         /* Yes, you're reading this correctly: if the target
4507                          * domain points back to the local system or an attached
4508                          * Citadel directory, the address is invalid.  That's
4509                          * because if the address were valid, we would have
4510                          * already translated it to a local address by now.
4511                          */
4512                         if (IsDirectory(this_recp, 0)) {
4513                                 ++ret->num_error;
4514                                 invalid = 1;
4515                         }
4516                         else {
4517                                 ++ret->num_internet;
4518                                 if (!IsEmptyStr(ret->recp_internet)) {
4519                                         strcat(ret->recp_internet, "|");
4520                                 }
4521                                 strcat(ret->recp_internet, this_recp);
4522                         }
4523                         break;
4524                 case MES_IGNET:
4525                         ++ret->num_ignet;
4526                         if (!IsEmptyStr(ret->recp_ignet)) {
4527                                 strcat(ret->recp_ignet, "|");
4528                         }
4529                         strcat(ret->recp_ignet, this_recp);
4530                         break;
4531                 case MES_ERROR:
4532                         ++ret->num_error;
4533                         invalid = 1;
4534                         break;
4535                 }
4536                 if (invalid) {
4537                         if (IsEmptyStr(errmsg)) {
4538                                 snprintf(append, sizeof append, "Invalid recipient: %s", this_recp);
4539                         }
4540                         else {
4541                                 snprintf(append, sizeof append, "%s", errmsg);
4542                         }
4543                         if ( (strlen(ret->errormsg) + strlen(append) + 3) < SIZ) {
4544                                 if (!IsEmptyStr(ret->errormsg)) {
4545                                         strcat(ret->errormsg, "; ");
4546                                 }
4547                                 strcat(ret->errormsg, append);
4548                         }
4549                 }
4550                 else {
4551                         if (IsEmptyStr(ret->display_recp)) {
4552                                 strcpy(append, this_recp);
4553                         }
4554                         else {
4555                                 snprintf(append, sizeof append, ", %s", this_recp);
4556                         }
4557                         if ( (strlen(ret->display_recp)+strlen(append)) < SIZ) {
4558                                 strcat(ret->display_recp, append);
4559                         }
4560                 }
4561         }
4562         free(org_recp);
4563
4564         if ((ret->num_local + ret->num_internet + ret->num_ignet +
4565              ret->num_room + ret->num_error) == 0) {
4566                 ret->num_error = (-1);
4567                 strcpy(ret->errormsg, "No recipients specified.");
4568         }
4569
4570         MSGM_syslog(LOG_DEBUG, "validate_recipients()\n");
4571         MSG_syslog(LOG_DEBUG, " local: %d <%s>\n", ret->num_local, ret->recp_local);
4572         MSG_syslog(LOG_DEBUG, "  room: %d <%s>\n", ret->num_room, ret->recp_room);
4573         MSG_syslog(LOG_DEBUG, "  inet: %d <%s>\n", ret->num_internet, ret->recp_internet);
4574         MSG_syslog(LOG_DEBUG, " ignet: %d <%s>\n", ret->num_ignet, ret->recp_ignet);
4575         MSG_syslog(LOG_DEBUG, " error: %d <%s>\n", ret->num_error, ret->errormsg);
4576
4577         free(recipients);
4578         return(ret);
4579 }
4580
4581
4582 /*
4583  * Destructor for struct recptypes
4584  */
4585 void free_recipients(struct recptypes *valid) {
4586
4587         if (valid == NULL) {
4588                 return;
4589         }
4590
4591         if (valid->recptypes_magic != RECPTYPES_MAGIC) {
4592                 struct CitContext *CCC = CC;
4593                 MSGM_syslog(LOG_EMERG, "Attempt to call free_recipients() on some other data type!\n");
4594                 abort();
4595         }
4596
4597         if (valid->errormsg != NULL)            free(valid->errormsg);
4598         if (valid->recp_local != NULL)          free(valid->recp_local);
4599         if (valid->recp_internet != NULL)       free(valid->recp_internet);
4600         if (valid->recp_ignet != NULL)          free(valid->recp_ignet);
4601         if (valid->recp_room != NULL)           free(valid->recp_room);
4602         if (valid->recp_orgroom != NULL)        free(valid->recp_orgroom);
4603         if (valid->display_recp != NULL)        free(valid->display_recp);
4604         if (valid->bounce_to != NULL)           free(valid->bounce_to);
4605         if (valid->envelope_from != NULL)       free(valid->envelope_from);
4606         if (valid->sending_room != NULL)        free(valid->sending_room);
4607         free(valid);
4608 }
4609
4610
4611
4612 /*
4613  * message entry  -  mode 0 (normal)
4614  */
4615 void cmd_ent0(char *entargs)
4616 {
4617         struct CitContext *CCC = CC;
4618         int post = 0;
4619         char recp[SIZ];
4620         char cc[SIZ];
4621         char bcc[SIZ];
4622         char supplied_euid[128];
4623         int anon_flag = 0;
4624         int format_type = 0;
4625         char newusername[256];
4626         char newuseremail[256];
4627         struct CtdlMessage *msg;
4628         int anonymous = 0;
4629         char errmsg[SIZ];
4630         int err = 0;
4631         struct recptypes *valid = NULL;
4632         struct recptypes *valid_to = NULL;
4633         struct recptypes *valid_cc = NULL;
4634         struct recptypes *valid_bcc = NULL;
4635         char subject[SIZ];
4636         int subject_required = 0;
4637         int do_confirm = 0;
4638         long msgnum;
4639         int i, j;
4640         char buf[256];
4641         int newuseremail_ok = 0;
4642         char references[SIZ];
4643         char *ptr;
4644
4645         unbuffer_output();
4646
4647         post = extract_int(entargs, 0);
4648         extract_token(recp, entargs, 1, '|', sizeof recp);
4649         anon_flag = extract_int(entargs, 2);
4650         format_type = extract_int(entargs, 3);
4651         extract_token(subject, entargs, 4, '|', sizeof subject);
4652         extract_token(newusername, entargs, 5, '|', sizeof newusername);
4653         do_confirm = extract_int(entargs, 6);
4654         extract_token(cc, entargs, 7, '|', sizeof cc);
4655         extract_token(bcc, entargs, 8, '|', sizeof bcc);
4656         switch(CC->room.QRdefaultview) {
4657         case VIEW_NOTES:
4658         case VIEW_WIKI:
4659                 extract_token(supplied_euid, entargs, 9, '|', sizeof supplied_euid);
4660                 break;
4661         default:
4662                 supplied_euid[0] = 0;
4663                 break;
4664         }
4665         extract_token(newuseremail, entargs, 10, '|', sizeof newuseremail);
4666         extract_token(references, entargs, 11, '|', sizeof references);
4667         for (ptr=references; *ptr != 0; ++ptr) {
4668                 if (*ptr == '!') *ptr = '|';
4669         }
4670
4671         /* first check to make sure the request is valid. */
4672
4673         err = CtdlDoIHavePermissionToPostInThisRoom(
4674                 errmsg,
4675                 sizeof errmsg,
4676                 NULL,
4677                 POST_LOGGED_IN,
4678                 (!IsEmptyStr(references))               /* is this a reply?  or a top-level post? */
4679                 );
4680         if (err)
4681         {
4682                 cprintf("%d %s\n", err, errmsg);
4683                 return;
4684         }
4685
4686         /* Check some other permission type things. */
4687
4688         if (IsEmptyStr(newusername)) {
4689                 strcpy(newusername, CCC->user.fullname);
4690         }
4691         if (  (CCC->user.axlevel < AxAideU)
4692               && (strcasecmp(newusername, CCC->user.fullname))
4693               && (strcasecmp(newusername, CCC->cs_inet_fn))
4694                 ) {
4695                 cprintf("%d You don't have permission to author messages as '%s'.\n",
4696                         ERROR + HIGHER_ACCESS_REQUIRED,
4697                         newusername
4698                         );
4699                 return;
4700         }
4701
4702
4703         if (IsEmptyStr(newuseremail)) {
4704                 newuseremail_ok = 1;
4705         }
4706
4707         if (!IsEmptyStr(newuseremail)) {
4708                 if (!strcasecmp(newuseremail, CCC->cs_inet_email)) {
4709                         newuseremail_ok = 1;
4710                 }
4711                 else if (!IsEmptyStr(CCC->cs_inet_other_emails)) {
4712                         j = num_tokens(CCC->cs_inet_other_emails, '|');
4713                         for (i=0; i<j; ++i) {
4714                                 extract_token(buf, CCC->cs_inet_other_emails, i, '|', sizeof buf);
4715                                 if (!strcasecmp(newuseremail, buf)) {
4716                                         newuseremail_ok = 1;
4717                                 }
4718                         }
4719                 }
4720         }
4721
4722         if (!newuseremail_ok) {
4723                 cprintf("%d You don't have permission to author messages as '%s'.\n",
4724                         ERROR + HIGHER_ACCESS_REQUIRED,
4725                         newuseremail
4726                         );
4727                 return;
4728         }
4729
4730         CCC->cs_flags |= CS_POSTING;
4731
4732         /* In mailbox rooms we have to behave a little differently --
4733          * make sure the user has specified at least one recipient.  Then
4734          * validate the recipient(s).  We do this for the Mail> room, as
4735          * well as any room which has the "Mailbox" view set - unless it
4736          * is the DRAFTS room which does not require recipients
4737          */
4738
4739         if ( (  ( (CCC->room.QRflags & QR_MAILBOX) && (!strcasecmp(&CCC->room.QRname[11], MAILROOM)) )
4740                 || ( (CCC->room.QRflags & QR_MAILBOX) && (CCC->curr_view == VIEW_MAILBOX) )
4741                      ) && (strcasecmp(&CCC->room.QRname[11], USERDRAFTROOM)) !=0 ) {
4742                 if (CCC->user.axlevel < AxProbU) {
4743                         strcpy(recp, "sysop");
4744                         strcpy(cc, "");
4745                         strcpy(bcc, "");
4746                 }
4747
4748                 valid_to = validate_recipients(recp, NULL, 0);
4749                 if (valid_to->num_error > 0) {
4750                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_to->errormsg);
4751                         free_recipients(valid_to);
4752                         return;
4753                 }
4754
4755                 valid_cc = validate_recipients(cc, NULL, 0);
4756                 if (valid_cc->num_error > 0) {
4757                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_cc->errormsg);
4758                         free_recipients(valid_to);
4759                         free_recipients(valid_cc);
4760                         return;
4761                 }
4762
4763                 valid_bcc = validate_recipients(bcc, NULL, 0);
4764                 if (valid_bcc->num_error > 0) {
4765                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_bcc->errormsg);
4766                         free_recipients(valid_to);
4767                         free_recipients(valid_cc);
4768                         free_recipients(valid_bcc);
4769                         return;
4770                 }
4771
4772                 /* Recipient required, but none were specified */
4773                 if ( (valid_to->num_error < 0) && (valid_cc->num_error < 0) && (valid_bcc->num_error < 0) ) {
4774                         free_recipients(valid_to);
4775                         free_recipients(valid_cc);
4776                         free_recipients(valid_bcc);
4777                         cprintf("%d At least one recipient is required.\n", ERROR + NO_SUCH_USER);
4778                         return;
4779                 }
4780
4781                 if (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0) {
4782                         if (CtdlCheckInternetMailPermission(&CCC->user)==0) {
4783                                 cprintf("%d You do not have permission "
4784                                         "to send Internet mail.\n",
4785                                         ERROR + HIGHER_ACCESS_REQUIRED);
4786                                 free_recipients(valid_to);
4787                                 free_recipients(valid_cc);
4788                                 free_recipients(valid_bcc);
4789                                 return;
4790                         }
4791                 }
4792
4793                 if ( ( (valid_to->num_internet + valid_to->num_ignet + valid_cc->num_internet + valid_cc->num_ignet + valid_bcc->num_internet + valid_bcc->num_ignet) > 0)
4794                      && (CCC->user.axlevel < AxNetU) ) {
4795                         cprintf("%d Higher access required for network mail.\n",
4796                                 ERROR + HIGHER_ACCESS_REQUIRED);
4797                         free_recipients(valid_to);
4798                         free_recipients(valid_cc);
4799                         free_recipients(valid_bcc);
4800                         return;
4801                 }
4802
4803                 if ((RESTRICT_INTERNET == 1)
4804                     && (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0)
4805                     && ((CCC->user.flags & US_INTERNET) == 0)
4806                     && (!CCC->internal_pgm)) {
4807                         cprintf("%d You don't have access to Internet mail.\n",
4808                                 ERROR + HIGHER_ACCESS_REQUIRED);
4809                         free_recipients(valid_to);
4810                         free_recipients(valid_cc);
4811                         free_recipients(valid_bcc);
4812                         return;
4813                 }
4814
4815         }
4816
4817         /* Is this a room which has anonymous-only or anonymous-option? */
4818         anonymous = MES_NORMAL;
4819         if (CCC->room.QRflags & QR_ANONONLY) {
4820                 anonymous = MES_ANONONLY;
4821         }
4822         if (CCC->room.QRflags & QR_ANONOPT) {
4823                 if (anon_flag == 1) {   /* only if the user requested it */
4824                         anonymous = MES_ANONOPT;
4825                 }
4826         }
4827
4828         if ((CCC->room.QRflags & QR_MAILBOX) == 0) {
4829                 recp[0] = 0;
4830         }
4831
4832         /* Recommend to the client that the use of a message subject is
4833          * strongly recommended in this room, if either the SUBJECTREQ flag
4834          * is set, or if there is one or more Internet email recipients.
4835          */
4836         if (CCC->room.QRflags2 & QR2_SUBJECTREQ) subject_required = 1;
4837         if ((valid_to)  && (valid_to->num_internet > 0))        subject_required = 1;
4838         if ((valid_cc)  && (valid_cc->num_internet > 0))        subject_required = 1;
4839         if ((valid_bcc) && (valid_bcc->num_internet > 0))       subject_required = 1;
4840
4841         /* If we're only checking the validity of the request, return
4842          * success without creating the message.
4843          */
4844         if (post == 0) {
4845                 cprintf("%d %s|%d\n", CIT_OK,
4846                         ((valid_to != NULL) ? valid_to->display_recp : ""),
4847                         subject_required);
4848                 free_recipients(valid_to);
4849                 free_recipients(valid_cc);
4850                 free_recipients(valid_bcc);
4851                 return;
4852         }
4853
4854         /* We don't need these anymore because we'll do it differently below */
4855         free_recipients(valid_to);
4856         free_recipients(valid_cc);
4857         free_recipients(valid_bcc);
4858
4859         /* Read in the message from the client. */
4860         if (do_confirm) {
4861                 cprintf("%d send message\n", START_CHAT_MODE);
4862         } else {
4863                 cprintf("%d send message\n", SEND_LISTING);
4864         }
4865
4866         msg = CtdlMakeMessage(&CCC->user, recp, cc,
4867                               CCC->room.QRname, anonymous, format_type,
4868                               newusername, newuseremail, subject,
4869                               ((!IsEmptyStr(supplied_euid)) ? supplied_euid : NULL),
4870                               NULL, references);
4871
4872         /* Put together one big recipients struct containing to/cc/bcc all in
4873          * one.  This is for the envelope.
4874          */
4875         char *all_recps = malloc(SIZ * 3);
4876         strcpy(all_recps, recp);
4877         if (!IsEmptyStr(cc)) {
4878                 if (!IsEmptyStr(all_recps)) {
4879                         strcat(all_recps, ",");
4880                 }
4881                 strcat(all_recps, cc);
4882         }
4883         if (!IsEmptyStr(bcc)) {
4884                 if (!IsEmptyStr(all_recps)) {
4885                         strcat(all_recps, ",");
4886                 }
4887                 strcat(all_recps, bcc);
4888         }
4889         if (!IsEmptyStr(all_recps)) {
4890                 valid = validate_recipients(all_recps, NULL, 0);
4891         }
4892         else {
4893                 valid = NULL;
4894         }
4895         free(all_recps);
4896
4897         if ((valid != NULL) && (valid->num_room == 1))
4898         {
4899                 /* posting into an ML room? set the envelope from
4900                  * to the actual mail address so others get a valid
4901                  * reply-to-header.
4902                  */
4903                 msg->cm_fields[eenVelopeTo] = strdup(valid->recp_orgroom);
4904         }
4905
4906         if (msg != NULL) {
4907                 msgnum = CtdlSubmitMsg(msg, valid, "", QP_EADDR);
4908                 if (do_confirm) {
4909                         cprintf("%ld\n", msgnum);
4910
4911                         if (StrLength(CCC->StatusMessage) > 0) {
4912                                 cprintf("%s\n", ChrPtr(CCC->StatusMessage));
4913                         }
4914                         else if (msgnum >= 0L) {
4915                                 client_write(HKEY("Message accepted.\n"));
4916                         }
4917                         else {
4918                                 client_write(HKEY("Internal error.\n"));
4919                         }
4920
4921                         if (!CM_IsEmpty(msg, eExclusiveID)) {
4922                                 cprintf("%s\n", msg->cm_fields[eExclusiveID]);
4923                         } else {
4924                                 cprintf("\n");
4925                         }
4926                         cprintf("000\n");
4927                 }
4928
4929                 CtdlFreeMessage(msg);
4930         }
4931         if (valid != NULL) {
4932                 free_recipients(valid);
4933         }
4934         return;
4935 }
4936
4937
4938
4939 /*
4940  * API function to delete messages which match a set of criteria
4941  * (returns the actual number of messages deleted)
4942  */
4943 int CtdlDeleteMessages(char *room_name,         /* which room */
4944                        long *dmsgnums,          /* array of msg numbers to be deleted */
4945                        int num_dmsgnums,        /* number of msgs to be deleted, or 0 for "any" */
4946                        char *content_type       /* or "" for any.  regular expressions expected. */
4947         )
4948 {
4949         struct CitContext *CCC = CC;
4950         struct ctdlroom qrbuf;
4951         struct cdbdata *cdbfr;
4952         long *msglist = NULL;
4953         long *dellist = NULL;
4954         int num_msgs = 0;
4955         int i, j;
4956         int num_deleted = 0;
4957         int delete_this;
4958         struct MetaData smi;
4959         regex_t re;
4960         regmatch_t pm;
4961         int need_to_free_re = 0;
4962
4963         if (content_type) if (!IsEmptyStr(content_type)) {
4964                         regcomp(&re, content_type, 0);
4965                         need_to_free_re = 1;
4966                 }
4967         MSG_syslog(LOG_DEBUG, " CtdlDeleteMessages(%s, %d msgs, %s)\n",
4968                    room_name, num_dmsgnums, content_type);
4969
4970         /* get room record, obtaining a lock... */
4971         if (CtdlGetRoomLock(&qrbuf, room_name) != 0) {
4972                 MSG_syslog(LOG_ERR, " CtdlDeleteMessages(): Room <%s> not found\n",
4973                            room_name);
4974                 if (need_to_free_re) regfree(&re);
4975                 return (0);     /* room not found */
4976         }
4977         cdbfr = cdb_fetch(CDB_MSGLISTS, &qrbuf.QRnumber, sizeof(long));
4978
4979         if (cdbfr != NULL) {
4980                 dellist = malloc(cdbfr->len);
4981                 msglist = (long *) cdbfr->ptr;
4982                 cdbfr->ptr = NULL;      /* CtdlDeleteMessages() now owns this memory */
4983                 num_msgs = cdbfr->len / sizeof(long);
4984                 cdb_free(cdbfr);
4985         }
4986         if (num_msgs > 0) {
4987                 int have_contenttype = (content_type != NULL) && !IsEmptyStr(content_type);
4988                 int have_delmsgs = (num_dmsgnums == 0) || (dmsgnums == NULL);
4989                 int have_more_del = 1;
4990
4991                 num_msgs = sort_msglist(msglist, num_msgs);
4992                 if (num_dmsgnums > 1)
4993                         num_dmsgnums = sort_msglist(dmsgnums, num_dmsgnums);
4994 /*
4995                 {
4996                         StrBuf *dbg = NewStrBuf();
4997                         for (i = 0; i < num_dmsgnums; i++)
4998                                 StrBufAppendPrintf(dbg, ", %ld", dmsgnums[i]);
4999                         MSG_syslog(LOG_DEBUG, " Deleting before: %s", ChrPtr(dbg));
5000                         FreeStrBuf(&dbg);
5001                 }
5002 */
5003                 i = 0; j = 0;
5004                 while ((i < num_msgs) && (have_more_del)) {
5005                         delete_this = 0x00;
5006
5007                         /* Set/clear a bit for each criterion */
5008
5009                         /* 0 messages in the list or a null list means that we are
5010                          * interested in deleting any messages which meet the other criteria.
5011                          */
5012                         if (have_delmsgs) {
5013                                 delete_this |= 0x01;
5014                         }
5015                         else {
5016                                 while ((i < num_msgs) && (msglist[i] < dmsgnums[j])) i++;
5017
5018                                 if (i >= num_msgs)
5019                                         continue;
5020
5021                                 if (msglist[i] == dmsgnums[j]) {
5022                                         delete_this |= 0x01;
5023                                 }
5024                                 j++;
5025                                 have_more_del = (j < num_dmsgnums);
5026                         }
5027
5028                         if (have_contenttype) {
5029                                 GetMetaData(&smi, msglist[i]);
5030                                 if (regexec(&re, smi.meta_content_type, 1, &pm, 0) == 0) {
5031                                         delete_this |= 0x02;
5032                                 }
5033                         } else {
5034                                 delete_this |= 0x02;
5035                         }
5036
5037                         /* Delete message only if all bits are set */
5038                         if (delete_this == 0x03) {
5039                                 dellist[num_deleted++] = msglist[i];
5040                                 msglist[i] = 0L;
5041                         }
5042                         i++;
5043                 }
5044 /*
5045                 {
5046                         StrBuf *dbg = NewStrBuf();
5047                         for (i = 0; i < num_deleted; i++)
5048                                 StrBufAppendPrintf(dbg, ", %ld", dellist[i]);
5049                         MSG_syslog(LOG_DEBUG, " Deleting: %s", ChrPtr(dbg));
5050                         FreeStrBuf(&dbg);
5051                 }
5052 */
5053                 num_msgs = sort_msglist(msglist, num_msgs);
5054                 cdb_store(CDB_MSGLISTS, &qrbuf.QRnumber, (int)sizeof(long),
5055                           msglist, (int)(num_msgs * sizeof(long)));
5056
5057                 if (num_msgs > 0)
5058                         qrbuf.QRhighest = msglist[num_msgs - 1];
5059                 else
5060                         qrbuf.QRhighest = 0;
5061         }
5062         CtdlPutRoomLock(&qrbuf);
5063
5064         /* Go through the messages we pulled out of the index, and decrement
5065          * their reference counts by 1.  If this is the only room the message
5066          * was in, the reference count will reach zero and the message will
5067          * automatically be deleted from the database.  We do this in a
5068          * separate pass because there might be plug-in hooks getting called,
5069          * and we don't want that happening during an S_ROOMS critical
5070          * section.
5071          */
5072         if (num_deleted) {
5073                 for (i=0; i<num_deleted; ++i) {
5074                         PerformDeleteHooks(qrbuf.QRname, dellist[i]);
5075                 }
5076                 AdjRefCountList(dellist, num_deleted, -1);
5077         }
5078         /* Now free the memory we used, and go away. */
5079         if (msglist != NULL) free(msglist);
5080         if (dellist != NULL) free(dellist);
5081         MSG_syslog(LOG_DEBUG, " %d message(s) deleted.\n", num_deleted);
5082         if (need_to_free_re) regfree(&re);
5083         return (num_deleted);
5084 }
5085
5086
5087
5088 /*
5089  * Check whether the current user has permission to delete messages from
5090  * the current room (returns 1 for yes, 0 for no)
5091  */
5092 int CtdlDoIHavePermissionToDeleteMessagesFromThisRoom(void) {
5093         int ra;
5094         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
5095         if (ra & UA_DELETEALLOWED) return(1);
5096         return(0);
5097 }
5098
5099
5100
5101
5102 /*
5103  * Delete message from current room
5104  */
5105 void cmd_dele(char *args)
5106 {
5107         int num_deleted;
5108         int i;
5109         char msgset[SIZ];
5110         char msgtok[32];
5111         long *msgs;
5112         int num_msgs = 0;
5113
5114         extract_token(msgset, args, 0, '|', sizeof msgset);
5115         num_msgs = num_tokens(msgset, ',');
5116         if (num_msgs < 1) {
5117                 cprintf("%d Nothing to do.\n", CIT_OK);
5118                 return;
5119         }
5120
5121         if (CtdlDoIHavePermissionToDeleteMessagesFromThisRoom() == 0) {
5122                 cprintf("%d Higher access required.\n",
5123                         ERROR + HIGHER_ACCESS_REQUIRED);
5124                 return;
5125         }
5126
5127         /*
5128          * Build our message set to be moved/copied
5129          */
5130         msgs = malloc(num_msgs * sizeof(long));
5131         for (i=0; i<num_msgs; ++i) {
5132                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
5133                 msgs[i] = atol(msgtok);
5134         }
5135
5136         num_deleted = CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
5137         free(msgs);
5138
5139         if (num_deleted) {
5140                 cprintf("%d %d message%s deleted.\n", CIT_OK,
5141                         num_deleted, ((num_deleted != 1) ? "s" : ""));
5142         } else {
5143                 cprintf("%d Message not found.\n", ERROR + MESSAGE_NOT_FOUND);
5144         }
5145 }
5146
5147
5148
5149
5150 /*
5151  * move or copy a message to another room
5152  */
5153 void cmd_move(char *args)
5154 {
5155         char msgset[SIZ];
5156         char msgtok[32];
5157         long *msgs;
5158         int num_msgs = 0;
5159
5160         char targ[ROOMNAMELEN];
5161         struct ctdlroom qtemp;
5162         int err;
5163         int is_copy = 0;
5164         int ra;
5165         int permit = 0;
5166         int i;
5167
5168         extract_token(msgset, args, 0, '|', sizeof msgset);
5169         num_msgs = num_tokens(msgset, ',');
5170         if (num_msgs < 1) {
5171                 cprintf("%d Nothing to do.\n", CIT_OK);
5172                 return;
5173         }
5174
5175         extract_token(targ, args, 1, '|', sizeof targ);
5176         convert_room_name_macros(targ, sizeof targ);
5177         targ[ROOMNAMELEN - 1] = 0;
5178         is_copy = extract_int(args, 2);
5179
5180         if (CtdlGetRoom(&qtemp, targ) != 0) {
5181                 cprintf("%d '%s' does not exist.\n", ERROR + ROOM_NOT_FOUND, targ);
5182                 return;
5183         }
5184
5185         if (!strcasecmp(qtemp.QRname, CC->room.QRname)) {
5186                 cprintf("%d Source and target rooms are the same.\n", ERROR + ALREADY_EXISTS);
5187                 return;
5188         }
5189
5190         CtdlGetUser(&CC->user, CC->curr_user);
5191         CtdlRoomAccess(&qtemp, &CC->user, &ra, NULL);
5192
5193         /* Check for permission to perform this operation.
5194          * Remember: "CC->room" is source, "qtemp" is target.
5195          */
5196         permit = 0;
5197
5198         /* Admins can move/copy */
5199         if (CC->user.axlevel >= AxAideU) permit = 1;
5200
5201         /* Room aides can move/copy */
5202         if (CC->user.usernum == CC->room.QRroomaide) permit = 1;
5203
5204         /* Permit move/copy from personal rooms */
5205         if ((CC->room.QRflags & QR_MAILBOX)
5206             && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
5207
5208         /* Permit only copy from public to personal room */
5209         if ( (is_copy)
5210              && (!(CC->room.QRflags & QR_MAILBOX))
5211              && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
5212
5213         /* Permit message removal from collaborative delete rooms */
5214         if (CC->room.QRflags2 & QR2_COLLABDEL) permit = 1;
5215
5216         /* Users allowed to post into the target room may move into it too. */
5217         if ((CC->room.QRflags & QR_MAILBOX) &&
5218             (qtemp.QRflags & UA_POSTALLOWED))  permit = 1;
5219
5220         /* User must have access to target room */
5221         if (!(ra & UA_KNOWN))  permit = 0;
5222
5223         if (!permit) {
5224                 cprintf("%d Higher access required.\n",
5225                         ERROR + HIGHER_ACCESS_REQUIRED);
5226                 return;
5227         }
5228
5229         /*
5230          * Build our message set to be moved/copied
5231          */
5232         msgs = malloc(num_msgs * sizeof(long));
5233         for (i=0; i<num_msgs; ++i) {
5234                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
5235                 msgs[i] = atol(msgtok);
5236         }
5237
5238         /*
5239          * Do the copy
5240          */
5241         err = CtdlSaveMsgPointersInRoom(targ, msgs, num_msgs, 1, NULL, 0);
5242         if (err != 0) {
5243                 cprintf("%d Cannot store message(s) in %s: error %d\n",
5244                         err, targ, err);
5245                 free(msgs);
5246                 return;
5247         }
5248
5249         /* Now delete the message from the source room,
5250          * if this is a 'move' rather than a 'copy' operation.
5251          */
5252         if (is_copy == 0) {
5253                 CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
5254         }
5255         free(msgs);
5256
5257         cprintf("%d Message(s) %s.\n", CIT_OK, (is_copy ? "copied" : "moved") );
5258 }
5259
5260
5261
5262 /*
5263  * GetMetaData()  -  Get the supplementary record for a message
5264  */
5265 void GetMetaData(struct MetaData *smibuf, long msgnum)
5266 {
5267
5268         struct cdbdata *cdbsmi;
5269         long TheIndex;
5270
5271         memset(smibuf, 0, sizeof(struct MetaData));
5272         smibuf->meta_msgnum = msgnum;
5273         smibuf->meta_refcount = 1;      /* Default reference count is 1 */
5274
5275         /* Use the negative of the message number for its supp record index */
5276         TheIndex = (0L - msgnum);
5277
5278         cdbsmi = cdb_fetch(CDB_MSGMAIN, &TheIndex, sizeof(long));
5279         if (cdbsmi == NULL) {
5280                 return;         /* record not found; go with defaults */
5281         }
5282         memcpy(smibuf, cdbsmi->ptr,
5283                ((cdbsmi->len > sizeof(struct MetaData)) ?
5284                 sizeof(struct MetaData) : cdbsmi->len));
5285         cdb_free(cdbsmi);
5286         return;
5287 }
5288
5289
5290 /*
5291  * PutMetaData()  -  (re)write supplementary record for a message
5292  */
5293 void PutMetaData(struct MetaData *smibuf)
5294 {
5295         long TheIndex;
5296
5297         /* Use the negative of the message number for the metadata db index */
5298         TheIndex = (0L - smibuf->meta_msgnum);
5299
5300         cdb_store(CDB_MSGMAIN,
5301                   &TheIndex, (int)sizeof(long),
5302                   smibuf, (int)sizeof(struct MetaData));
5303
5304 }
5305
5306 /*
5307  * AdjRefCount  -  submit an adjustment to the reference count for a message.
5308  *                 (These are just queued -- we actually process them later.)
5309  */
5310 void AdjRefCount(long msgnum, int incr)
5311 {
5312         struct CitContext *CCC = CC;
5313         struct arcq new_arcq;
5314         int rv = 0;
5315
5316         MSG_syslog(LOG_DEBUG, "AdjRefCount() msg %ld ref count delta %+d\n", msgnum, incr);
5317
5318         begin_critical_section(S_SUPPMSGMAIN);
5319         if (arcfp == NULL) {
5320                 arcfp = fopen(file_arcq, "ab+");
5321                 chown(file_arcq, CTDLUID, (-1));
5322                 chmod(file_arcq, 0600);
5323         }
5324         end_critical_section(S_SUPPMSGMAIN);
5325
5326         /* msgnum < 0 means that we're trying to close the file */
5327         if (msgnum < 0) {
5328                 MSGM_syslog(LOG_DEBUG, "Closing the AdjRefCount queue file\n");
5329                 begin_critical_section(S_SUPPMSGMAIN);
5330                 if (arcfp != NULL) {
5331                         fclose(arcfp);
5332                         arcfp = NULL;
5333                 }
5334                 end_critical_section(S_SUPPMSGMAIN);
5335                 return;
5336         }
5337
5338         /*
5339          * If we can't open the queue, perform the operation synchronously.
5340          */
5341         if (arcfp == NULL) {
5342                 TDAP_AdjRefCount(msgnum, incr);
5343                 return;
5344         }
5345
5346         new_arcq.arcq_msgnum = msgnum;
5347         new_arcq.arcq_delta = incr;
5348         rv = fwrite(&new_arcq, sizeof(struct arcq), 1, arcfp);
5349         if (rv == -1) {
5350                 MSG_syslog(LOG_EMERG, "Couldn't write Refcount Queue File %s: %s\n",
5351                            file_arcq,
5352                            strerror(errno));
5353         }
5354         fflush(arcfp);
5355
5356         return;
5357 }
5358
5359 void AdjRefCountList(long *msgnum, long nmsg, int incr)
5360 {
5361         struct CitContext *CCC = CC;
5362         long i, the_size, offset;
5363         struct arcq *new_arcq;
5364         int rv = 0;
5365
5366         MSG_syslog(LOG_DEBUG, "AdjRefCountList() msg %ld ref count delta %+d\n", nmsg, incr);
5367
5368         begin_critical_section(S_SUPPMSGMAIN);
5369         if (arcfp == NULL) {
5370                 arcfp = fopen(file_arcq, "ab+");
5371                 chown(file_arcq, CTDLUID, (-1));
5372                 chmod(file_arcq, 0600);
5373         }
5374         end_critical_section(S_SUPPMSGMAIN);
5375
5376         /*
5377          * If we can't open the queue, perform the operation synchronously.
5378          */
5379         if (arcfp == NULL) {
5380                 for (i = 0; i < nmsg; i++)
5381                         TDAP_AdjRefCount(msgnum[i], incr);
5382                 return;
5383         }
5384
5385         the_size = sizeof(struct arcq) * nmsg;
5386         new_arcq = malloc(the_size);
5387         for (i = 0; i < nmsg; i++) {
5388                 new_arcq[i].arcq_msgnum = msgnum[i];
5389                 new_arcq[i].arcq_delta = incr;
5390         }
5391         rv = 0;
5392         offset = 0;
5393         while ((rv >= 0) && (offset < the_size))
5394         {
5395                 rv = fwrite(new_arcq + offset, 1, the_size - offset, arcfp);
5396                 if (rv == -1) {
5397                         MSG_syslog(LOG_EMERG, "Couldn't write Refcount Queue File %s: %s\n",
5398                                    file_arcq,
5399                                    strerror(errno));
5400                 }
5401                 else {
5402                         offset += rv;
5403                 }
5404         }
5405         free(new_arcq);
5406         fflush(arcfp);
5407
5408         return;
5409 }
5410
5411
5412 /*
5413  * TDAP_ProcessAdjRefCountQueue()
5414  *
5415  * Process the queue of message count adjustments that was created by calls
5416  * to AdjRefCount() ... by reading the queue and calling TDAP_AdjRefCount()
5417  * for each one.  This should be an "off hours" operation.
5418  */
5419 int TDAP_ProcessAdjRefCountQueue(void)
5420 {
5421         struct CitContext *CCC = CC;
5422         char file_arcq_temp[PATH_MAX];
5423         int r;
5424         FILE *fp;
5425         struct arcq arcq_rec;
5426         int num_records_processed = 0;
5427
5428         snprintf(file_arcq_temp, sizeof file_arcq_temp, "%s.%04x", file_arcq, rand());
5429
5430         begin_critical_section(S_SUPPMSGMAIN);
5431         if (arcfp != NULL) {
5432                 fclose(arcfp);
5433                 arcfp = NULL;
5434         }
5435
5436         r = link(file_arcq, file_arcq_temp);
5437         if (r != 0) {
5438                 MSG_syslog(LOG_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
5439                 end_critical_section(S_SUPPMSGMAIN);
5440                 return(num_records_processed);
5441         }
5442
5443         unlink(file_arcq);
5444         end_critical_section(S_SUPPMSGMAIN);
5445
5446         fp = fopen(file_arcq_temp, "rb");
5447         if (fp == NULL) {
5448                 MSG_syslog(LOG_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
5449                 return(num_records_processed);
5450         }
5451
5452         while (fread(&arcq_rec, sizeof(struct arcq), 1, fp) == 1) {
5453                 TDAP_AdjRefCount(arcq_rec.arcq_msgnum, arcq_rec.arcq_delta);
5454                 ++num_records_processed;
5455         }
5456
5457         fclose(fp);
5458         r = unlink(file_arcq_temp);
5459         if (r != 0) {
5460                 MSG_syslog(LOG_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
5461         }
5462
5463         return(num_records_processed);
5464 }
5465
5466
5467
5468 /*
5469  * TDAP_AdjRefCount  -  adjust the reference count for a message.
5470  *                      This one does it "for real" because it's called by
5471  *                      the autopurger function that processes the queue
5472  *                      created by AdjRefCount().   If a message's reference
5473  *                      count becomes zero, we also delete the message from
5474  *                      disk and de-index it.
5475  */
5476 void TDAP_AdjRefCount(long msgnum, int incr)
5477 {
5478         struct CitContext *CCC = CC;
5479
5480         struct MetaData smi;
5481         long delnum;
5482
5483         /* This is a *tight* critical section; please keep it that way, as
5484          * it may get called while nested in other critical sections.
5485          * Complicating this any further will surely cause deadlock!
5486          */
5487         begin_critical_section(S_SUPPMSGMAIN);
5488         GetMetaData(&smi, msgnum);
5489         smi.meta_refcount += incr;
5490         PutMetaData(&smi);
5491         end_critical_section(S_SUPPMSGMAIN);
5492         MSG_syslog(LOG_DEBUG, "TDAP_AdjRefCount() msg %ld ref count delta %+d, is now %d\n",
5493                    msgnum, incr, smi.meta_refcount
5494                 );
5495
5496         /* If the reference count is now zero, delete the message
5497          * (and its supplementary record as well).
5498          */
5499         if (smi.meta_refcount == 0) {
5500                 MSG_syslog(LOG_DEBUG, "Deleting message <%ld>\n", msgnum);
5501
5502                 /* Call delete hooks with NULL room to show it has gone altogether */
5503                 PerformDeleteHooks(NULL, msgnum);
5504
5505                 /* Remove from message base */
5506                 delnum = msgnum;
5507                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
5508                 cdb_delete(CDB_BIGMSGS, &delnum, (int)sizeof(long));
5509
5510                 /* Remove metadata record */
5511                 delnum = (0L - msgnum);
5512                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
5513         }
5514
5515 }
5516
5517 /*
5518  * Write a generic object to this room
5519  *
5520  * Note: this could be much more efficient.  Right now we use two temporary
5521  * files, and still pull the message into memory as with all others.
5522  */
5523 void CtdlWriteObject(char *req_room,                    /* Room to stuff it in */
5524                      char *content_type,                /* MIME type of this object */
5525                      char *raw_message,         /* Data to be written */
5526                      off_t raw_length,          /* Size of raw_message */
5527                      struct ctdluser *is_mailbox,       /* Mailbox room? */
5528                      int is_binary,                     /* Is encoding necessary? */
5529                      int is_unique,                     /* Del others of this type? */
5530                      unsigned int flags         /* Internal save flags */
5531         )
5532 {
5533         struct CitContext *CCC = CC;
5534         struct ctdlroom qrbuf;
5535         char roomname[ROOMNAMELEN];
5536         struct CtdlMessage *msg;
5537         char *encoded_message = NULL;
5538
5539         if (is_mailbox != NULL) {
5540                 CtdlMailboxName(roomname, sizeof roomname, is_mailbox, req_room);
5541         }
5542         else {
5543                 safestrncpy(roomname, req_room, sizeof(roomname));
5544         }
5545
5546         MSG_syslog(LOG_DEBUG, "Raw length is %ld\n", (long)raw_length);
5547
5548         if (is_binary) {
5549                 encoded_message = malloc((size_t) (((raw_length * 134) / 100) + 4096 ) );
5550         }
5551         else {
5552                 encoded_message = malloc((size_t)(raw_length + 4096));
5553         }
5554
5555         sprintf(encoded_message, "Content-type: %s\n", content_type);
5556
5557         if (is_binary) {
5558                 sprintf(&encoded_message[strlen(encoded_message)],
5559                         "Content-transfer-encoding: base64\n\n"
5560                         );
5561         }
5562         else {
5563                 sprintf(&encoded_message[strlen(encoded_message)],
5564                         "Content-transfer-encoding: 7bit\n\n"
5565                         );
5566         }
5567
5568         if (is_binary) {
5569                 CtdlEncodeBase64(
5570                         &encoded_message[strlen(encoded_message)],
5571                         raw_message,
5572                         (int)raw_length,
5573                         0
5574                         );
5575         }
5576         else {
5577                 memcpy(
5578                         &encoded_message[strlen(encoded_message)],
5579                         raw_message,
5580                         (int)(raw_length+1)
5581                         );
5582         }
5583
5584         MSGM_syslog(LOG_DEBUG, "Allocating\n");
5585         msg = malloc(sizeof(struct CtdlMessage));
5586         memset(msg, 0, sizeof(struct CtdlMessage));
5587         msg->cm_magic = CTDLMESSAGE_MAGIC;
5588         msg->cm_anon_type = MES_NORMAL;
5589         msg->cm_format_type = 4;
5590         msg->cm_fields[eAuthor] = strdup(CCC->user.fullname);
5591         msg->cm_fields[eOriginalRoom] = strdup(req_room);
5592         msg->cm_fields[eNodeName] = strdup(config.c_nodename);
5593         msg->cm_fields[eHumanNode] = strdup(config.c_humannode);
5594         msg->cm_flags = flags;
5595
5596         msg->cm_fields[eMesageText] = encoded_message;
5597
5598         /* Create the requested room if we have to. */
5599         if (CtdlGetRoom(&qrbuf, roomname) != 0) {
5600                 CtdlCreateRoom(roomname,
5601                                ( (is_mailbox != NULL) ? 5 : 3 ),
5602                                "", 0, 1, 0, VIEW_BBS);
5603         }
5604         /* If the caller specified this object as unique, delete all
5605          * other objects of this type that are currently in the room.
5606          */
5607         if (is_unique) {
5608                 MSG_syslog(LOG_DEBUG, "Deleted %d other msgs of this type\n",
5609                            CtdlDeleteMessages(roomname, NULL, 0, content_type)
5610                         );
5611         }
5612         /* Now write the data */
5613         CtdlSubmitMsg(msg, NULL, roomname, 0);
5614         CtdlFreeMessage(msg);
5615 }
5616
5617
5618
5619
5620
5621
5622 void CtdlGetSysConfigBackend(long msgnum, void *userdata) {
5623         config_msgnum = msgnum;
5624 }
5625
5626
5627 char *CtdlGetSysConfig(char *sysconfname) {
5628         char hold_rm[ROOMNAMELEN];
5629         long msgnum;
5630         char *conf;
5631         struct CtdlMessage *msg;
5632         char buf[SIZ];
5633
5634         strcpy(hold_rm, CC->room.QRname);
5635         if (CtdlGetRoom(&CC->room, SYSCONFIGROOM) != 0) {
5636                 CtdlGetRoom(&CC->room, hold_rm);
5637                 return NULL;
5638         }
5639
5640
5641         /* We want the last (and probably only) config in this room */
5642         begin_critical_section(S_CONFIG);
5643         config_msgnum = (-1L);
5644         CtdlForEachMessage(MSGS_LAST, 1, NULL, sysconfname, NULL,
5645                            CtdlGetSysConfigBackend, NULL);
5646         msgnum = config_msgnum;
5647         end_critical_section(S_CONFIG);
5648
5649         if (msgnum < 0L) {
5650                 conf = NULL;
5651         }
5652         else {
5653                 msg = CtdlFetchMessage(msgnum, 1);
5654                 if (msg != NULL) {
5655                         conf = strdup(msg->cm_fields[eMesageText]);
5656                         CtdlFreeMessage(msg);
5657                 }
5658                 else {
5659                         conf = NULL;
5660                 }
5661         }
5662
5663         CtdlGetRoom(&CC->room, hold_rm);
5664
5665         if (conf != NULL) do {
5666                         extract_token(buf, conf, 0, '\n', sizeof buf);
5667                         strcpy(conf, &conf[strlen(buf)+1]);
5668                 } while ( (!IsEmptyStr(conf)) && (!IsEmptyStr(buf)) );
5669
5670         return(conf);
5671 }
5672
5673
5674 void CtdlPutSysConfig(char *sysconfname, char *sysconfdata) {
5675         CtdlWriteObject(SYSCONFIGROOM, sysconfname, sysconfdata, (strlen(sysconfdata)+1), NULL, 0, 1, 0);
5676 }
5677
5678
5679 /*
5680  * Determine whether a given Internet address belongs to the current user
5681  */
5682 int CtdlIsMe(char *addr, int addr_buf_len)
5683 {
5684         struct recptypes *recp;
5685         int i;
5686
5687         recp = validate_recipients(addr, NULL, 0);
5688         if (recp == NULL) return(0);
5689
5690         if (recp->num_local == 0) {
5691                 free_recipients(recp);
5692                 return(0);
5693         }
5694
5695         for (i=0; i<recp->num_local; ++i) {
5696                 extract_token(addr, recp->recp_local, i, '|', addr_buf_len);
5697                 if (!strcasecmp(addr, CC->user.fullname)) {
5698                         free_recipients(recp);
5699                         return(1);
5700                 }
5701         }
5702
5703         free_recipients(recp);
5704         return(0);
5705 }
5706
5707
5708 /*
5709  * Citadel protocol command to do the same
5710  */
5711 void cmd_isme(char *argbuf) {
5712         char addr[256];
5713
5714         if (CtdlAccessCheck(ac_logged_in)) return;
5715         extract_token(addr, argbuf, 0, '|', sizeof addr);
5716
5717         if (CtdlIsMe(addr, sizeof addr)) {
5718                 cprintf("%d %s\n", CIT_OK, addr);
5719         }
5720         else {
5721                 cprintf("%d Not you.\n", ERROR + ILLEGAL_VALUE);
5722         }
5723
5724 }
5725
5726
5727 /*****************************************************************************/
5728 /*                      MODULE INITIALIZATION STUFF                          */
5729 /*****************************************************************************/
5730 void SetMessageDebugEnabled(const int n)
5731 {
5732         MessageDebugEnabled = n;
5733 }
5734 CTDL_MODULE_INIT(msgbase)
5735 {
5736         if (!threading) {
5737                 CtdlRegisterDebugFlagHook(HKEY("messages"), SetMessageDebugEnabled, &MessageDebugEnabled);
5738
5739                 CtdlRegisterProtoHook(cmd_msgs, "MSGS", "Output a list of messages in the current room");
5740                 CtdlRegisterProtoHook(cmd_msg0, "MSG0", "Output a message in plain text format");
5741                 CtdlRegisterProtoHook(cmd_msg2, "MSG2", "Output a message in RFC822 format");
5742                 CtdlRegisterProtoHook(cmd_msg3, "MSG3", "Output a message in raw format (deprecated)");
5743                 CtdlRegisterProtoHook(cmd_msg4, "MSG4", "Output a message in the client's preferred format");
5744                 CtdlRegisterProtoHook(cmd_msgp, "MSGP", "Select preferred format for MSG4 output");
5745                 CtdlRegisterProtoHook(cmd_opna, "OPNA", "Open an attachment for download");
5746                 CtdlRegisterProtoHook(cmd_dlat, "DLAT", "Download an attachment");
5747                 CtdlRegisterProtoHook(cmd_ent0, "ENT0", "Enter a message");
5748                 CtdlRegisterProtoHook(cmd_dele, "DELE", "Delete a message");
5749                 CtdlRegisterProtoHook(cmd_move, "MOVE", "Move or copy a message to another room");
5750                 CtdlRegisterProtoHook(cmd_isme, "ISME", "Determine whether an email address belongs to a user");
5751         }
5752
5753         /* return our Subversion id for the Log */
5754         return "msgbase";
5755 }