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 CM_IsValidMsg(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, "CM_IsValidMsg() -- self-check failed\n");
 281                 return 0;
 282         }
 283         return 1;
 284 }
 285
 286 void CM_FreeContents(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 CM_Free(struct CtdlMessage *msg)
 301 {
 302         if (CM_IsValidMsg(msg) == 0)
 303         {
 304                 if (msg != NULL) free (msg);
 305                 return;
 306         }
 307         CM_FreeContents(msg);
 308         free(msg);
 309 }
 310
 311 int CM_DupField(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 * CM_Duplicate(struct CtdlMessage *OrgMsg)
 324 {
 325         int i;
 326         struct CtdlMessage *NewMsg;
 327
 328         if (CM_IsValidMsg(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 (!CM_DupField(i, OrgMsg, NewMsg))
 343                         {
 344                                 CM_Free(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         CM_Free(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         CM_Free(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                                         CM_Free(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) CM_Free(template);
1156         cprintf("000\n");
1157 }
1158
1159
1160 /*
1161  * memfmout()  -  Citadel text formatter and paginator.
1162  *           Although the original purpose of this routine was to format
1163  *           text to the reader's screen width, all we're really using it
1164  *           for here is to format text out to 80 columns before sending it
1165  *           to the client.  The client software may reformat it again.
1166  */
1167 void memfmout(
1168         char *mptr,             /* where are we going to get our text from? */
1169         const char *nl          /* string to terminate lines with */
1170 ) {
1171         struct CitContext *CCC = CC;
1172         int column = 0;
1173         unsigned char ch = 0;
1174         char outbuf[1024];
1175         int len = 0;
1176         int nllen = 0;
1177
1178         if (!mptr) return;
1179         nllen = strlen(nl);
1180         while (ch=*(mptr++), ch != 0) {
1181
1182                 if (ch == '\n') {
1183                         if (client_write(outbuf, len) == -1)
1184                         {
1185                                 MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1186                                 return;
1187                         }
1188                         len = 0;
1189                         if (client_write(nl, nllen) == -1)
1190                         {
1191                                 MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1192                                 return;
1193                         }
1194                         column = 0;
1195                 }
1196                 else if (ch == '\r') {
1197                         /* Ignore carriage returns.  Newlines are always LF or CRLF but never CR. */
1198                 }
1199                 else if (isspace(ch)) {
1200                         if (column > 72) {              /* Beyond 72 columns, break on the next space */
1201                                 if (client_write(outbuf, len) == -1)
1202                                 {
1203                                         MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1204                                         return;
1205                                 }
1206                                 len = 0;
1207                                 if (client_write(nl, nllen) == -1)
1208                                 {
1209                                         MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1210                                         return;
1211                                 }
1212                                 column = 0;
1213                         }
1214                         else {
1215                                 outbuf[len++] = ch;
1216                                 ++column;
1217                         }
1218                 }
1219                 else {
1220                         outbuf[len++] = ch;
1221                         ++column;
1222                         if (column > 1000) {            /* Beyond 1000 columns, break anywhere */
1223                                 if (client_write(outbuf, len) == -1)
1224                                 {
1225                                         MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1226                                         return;
1227                                 }
1228                                 len = 0;
1229                                 if (client_write(nl, nllen) == -1)
1230                                 {
1231                                         MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1232                                         return;
1233                                 }
1234                                 column = 0;
1235                         }
1236                 }
1237         }
1238         if (len) {
1239                 if (client_write(outbuf, len) == -1)
1240                 {
1241                         MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1242                         return;
1243                 }
1244                 len = 0;
1245                 client_write(nl, nllen);
1246                 column = 0;
1247         }
1248 }
1249
1250
1251
1252 /*
1253  * Callback function for mime parser that simply lists the part
1254  */
1255 void list_this_part(char *name, char *filename, char *partnum, char *disp,
1256                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1257                     char *cbid, void *cbuserdata)
1258 {
1259         struct ma_info *ma;
1260
1261         ma = (struct ma_info *)cbuserdata;
1262         if (ma->is_ma == 0) {
1263                 cprintf("part=%s|%s|%s|%s|%s|%ld|%s|%s\n",
1264                         name,
1265                         filename,
1266                         partnum,
1267                         disp,
1268                         cbtype,
1269                         (long)length,
1270                         cbid,
1271                         cbcharset);
1272         }
1273 }
1274
1275 /*
1276  * Callback function for multipart prefix
1277  */
1278 void list_this_pref(char *name, char *filename, char *partnum, char *disp,
1279                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1280                     char *cbid, void *cbuserdata)
1281 {
1282         struct ma_info *ma;
1283
1284         ma = (struct ma_info *)cbuserdata;
1285         if (!strcasecmp(cbtype, "multipart/alternative")) {
1286                 ++ma->is_ma;
1287         }
1288
1289         if (ma->is_ma == 0) {
1290                 cprintf("pref=%s|%s\n", partnum, cbtype);
1291         }
1292 }
1293
1294 /*
1295  * Callback function for multipart sufffix
1296  */
1297 void list_this_suff(char *name, char *filename, char *partnum, char *disp,
1298                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1299                     char *cbid, void *cbuserdata)
1300 {
1301         struct ma_info *ma;
1302
1303         ma = (struct ma_info *)cbuserdata;
1304         if (ma->is_ma == 0) {
1305                 cprintf("suff=%s|%s\n", partnum, cbtype);
1306         }
1307         if (!strcasecmp(cbtype, "multipart/alternative")) {
1308                 --ma->is_ma;
1309         }
1310 }
1311
1312
1313 /*
1314  * Callback function for mime parser that opens a section for downloading
1315  */
1316 void mime_download(char *name, char *filename, char *partnum, char *disp,
1317                    void *content, char *cbtype, char *cbcharset, size_t length,
1318                    char *encoding, char *cbid, void *cbuserdata)
1319 {
1320         int rv = 0;
1321         CitContext *CCC = MyContext();
1322
1323         /* Silently go away if there's already a download open. */
1324         if (CCC->download_fp != NULL)
1325                 return;
1326
1327         if (
1328                 (!IsEmptyStr(partnum) && (!strcasecmp(CCC->download_desired_section, partnum)))
1329         ||      (!IsEmptyStr(cbid) && (!strcasecmp(CCC->download_desired_section, cbid)))
1330         ) {
1331                 CCC->download_fp = tmpfile();
1332                 if (CCC->download_fp == NULL) {
1333                         MSG_syslog(LOG_EMERG, "mime_download(): Couldn't write: %s\n",
1334                                     strerror(errno));
1335                         cprintf("%d cannot open temporary file: %s\n",
1336                                 ERROR + INTERNAL_ERROR, strerror(errno));
1337                         return;
1338                 }
1339
1340                 rv = fwrite(content, length, 1, CCC->download_fp);
1341                 if (rv <= 0) {
1342                         MSG_syslog(LOG_EMERG, "mime_download(): Couldn't write: %s\n",
1343                                    strerror(errno));
1344                         cprintf("%d unable to write tempfile.\n",
1345                                 ERROR + TOO_BIG);
1346                         fclose(CCC->download_fp);
1347                         CCC->download_fp = NULL;
1348                         return;
1349                 }
1350                 fflush(CCC->download_fp);
1351                 rewind(CCC->download_fp);
1352
1353                 OpenCmdResult(filename, cbtype);
1354         }
1355 }
1356
1357
1358
1359 /*
1360  * Callback function for mime parser that outputs a section all at once.
1361  * We can specify the desired section by part number *or* content-id.
1362  */
1363 void mime_spew_section(char *name, char *filename, char *partnum, char *disp,
1364                    void *content, char *cbtype, char *cbcharset, size_t length,
1365                    char *encoding, char *cbid, void *cbuserdata)
1366 {
1367         int *found_it = (int *)cbuserdata;
1368
1369         if (
1370                 (!IsEmptyStr(partnum) && (!strcasecmp(CC->download_desired_section, partnum)))
1371         ||      (!IsEmptyStr(cbid) && (!strcasecmp(CC->download_desired_section, cbid)))
1372         ) {
1373                 *found_it = 1;
1374                 cprintf("%d %d|-1|%s|%s|%s\n",
1375                         BINARY_FOLLOWS,
1376                         (int)length,
1377                         filename,
1378                         cbtype,
1379                         cbcharset
1380                 );
1381                 client_write(content, length);
1382         }
1383 }
1384
1385
1386 /*
1387  * Load a message from disk into memory.
1388  * This is used by CtdlOutputMsg() and other fetch functions.
1389  *
1390  * NOTE: Caller is responsible for freeing the returned CtdlMessage struct
1391  *       using the CtdlMessageFree() function.
1392  */
1393 struct CtdlMessage *CtdlFetchMessage(long msgnum, int with_body)
1394 {
1395         struct CitContext *CCC = CC;
1396         struct cdbdata *dmsgtext;
1397         struct CtdlMessage *ret = NULL;
1398         char *mptr;
1399         char *upper_bound;
1400         cit_uint8_t ch;
1401         cit_uint8_t field_header;
1402
1403         MSG_syslog(LOG_DEBUG, "CtdlFetchMessage(%ld, %d)\n", msgnum, with_body);
1404         dmsgtext = cdb_fetch(CDB_MSGMAIN, &msgnum, sizeof(long));
1405         if (dmsgtext == NULL) {
1406                 MSG_syslog(LOG_ERR, "CtdlFetchMessage(%ld, %d) Failed!\n", msgnum, with_body);
1407                 return NULL;
1408         }
1409         mptr = dmsgtext->ptr;
1410         upper_bound = mptr + dmsgtext->len;
1411
1412         /* Parse the three bytes that begin EVERY message on disk.
1413          * The first is always 0xFF, the on-disk magic number.
1414          * The second is the anonymous/public type byte.
1415          * The third is the format type byte (vari, fixed, or MIME).
1416          */
1417         ch = *mptr++;
1418         if (ch != 255) {
1419                 MSG_syslog(LOG_ERR, "Message %ld appears to be corrupted.\n", msgnum);
1420                 cdb_free(dmsgtext);
1421                 return NULL;
1422         }
1423         ret = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
1424         memset(ret, 0, sizeof(struct CtdlMessage));
1425
1426         ret->cm_magic = CTDLMESSAGE_MAGIC;
1427         ret->cm_anon_type = *mptr++;    /* Anon type byte */
1428         ret->cm_format_type = *mptr++;  /* Format type byte */
1429
1430         /*
1431          * The rest is zero or more arbitrary fields.  Load them in.
1432          * We're done when we encounter either a zero-length field or
1433          * have just processed the 'M' (message text) field.
1434          */
1435         do {
1436                 long len;
1437                 if (mptr >= upper_bound) {
1438                         break;
1439                 }
1440                 field_header = *mptr++;
1441                 len = strlen(mptr);
1442                 CM_SetField(ret, field_header, mptr, len);
1443
1444                 mptr += len + 1;        /* advance to next field */
1445
1446         } while ((mptr < upper_bound) && (field_header != 'M'));
1447
1448         cdb_free(dmsgtext);
1449
1450         /* Always make sure there's something in the msg text field.  If
1451          * it's NULL, the message text is most likely stored separately,
1452          * so go ahead and fetch that.  Failing that, just set a dummy
1453          * body so other code doesn't barf.
1454          */
1455         if ( (CM_IsEmpty(ret, eMesageText)) && (with_body) ) {
1456                 dmsgtext = cdb_fetch(CDB_BIGMSGS, &msgnum, sizeof(long));
1457                 if (dmsgtext != NULL) {
1458                         CM_SetAsField(ret, eMesageText, &dmsgtext->ptr, dmsgtext->len);
1459                         cdb_free(dmsgtext);
1460                 }
1461         }
1462         if (CM_IsEmpty(ret, eMesageText)) {
1463                 CM_SetField(ret, eMesageText, HKEY("\r\n\r\n (no text)\r\n"));
1464         }
1465
1466         /* Perform "before read" hooks (aborting if any return nonzero) */
1467         if (PerformMessageHooks(ret, EVT_BEFOREREAD) > 0) {
1468                 CM_Free(ret);
1469                 return NULL;
1470         }
1471
1472         return (ret);
1473 }
1474
1475
1476
1477 /*
1478  * Pre callback function for multipart/alternative
1479  *
1480  * NOTE: this differs from the standard behavior for a reason.  Normally when
1481  *       displaying multipart/alternative you want to show the _last_ usable
1482  *       format in the message.  Here we show the _first_ one, because it's
1483  *       usually text/plain.  Since this set of functions is designed for text
1484  *       output to non-MIME-aware clients, this is the desired behavior.
1485  *
1486  */
1487 void fixed_output_pre(char *name, char *filename, char *partnum, char *disp,
1488                 void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1489                 char *cbid, void *cbuserdata)
1490 {
1491         struct CitContext *CCC = CC;
1492         struct ma_info *ma;
1493
1494         ma = (struct ma_info *)cbuserdata;
1495         MSG_syslog(LOG_DEBUG, "fixed_output_pre() type=<%s>\n", cbtype);
1496         if (!strcasecmp(cbtype, "multipart/alternative")) {
1497                 ++ma->is_ma;
1498                 ma->did_print = 0;
1499         }
1500         if (!strcasecmp(cbtype, "message/rfc822")) {
1501                 ++ma->freeze;
1502         }
1503 }
1504
1505 /*
1506  * Post callback function for multipart/alternative
1507  */
1508 void fixed_output_post(char *name, char *filename, char *partnum, char *disp,
1509                 void *content, char *cbtype, char *cbcharset, size_t length,
1510                 char *encoding, char *cbid, void *cbuserdata)
1511 {
1512         struct CitContext *CCC = CC;
1513         struct ma_info *ma;
1514
1515         ma = (struct ma_info *)cbuserdata;
1516         MSG_syslog(LOG_DEBUG, "fixed_output_post() type=<%s>\n", cbtype);
1517         if (!strcasecmp(cbtype, "multipart/alternative")) {
1518                 --ma->is_ma;
1519                 ma->did_print = 0;
1520         }
1521         if (!strcasecmp(cbtype, "message/rfc822")) {
1522                 --ma->freeze;
1523         }
1524 }
1525
1526 /*
1527  * Inline callback function for mime parser that wants to display text
1528  */
1529 void fixed_output(char *name, char *filename, char *partnum, char *disp,
1530                 void *content, char *cbtype, char *cbcharset, size_t length,
1531                 char *encoding, char *cbid, void *cbuserdata)
1532 {
1533         struct CitContext *CCC = CC;
1534         char *ptr;
1535         char *wptr;
1536         size_t wlen;
1537         struct ma_info *ma;
1538
1539         ma = (struct ma_info *)cbuserdata;
1540
1541         MSG_syslog(LOG_DEBUG,
1542                 "fixed_output() part %s: %s (%s) (%ld bytes)\n",
1543                 partnum, filename, cbtype, (long)length);
1544
1545         /*
1546          * If we're in the middle of a multipart/alternative scope and
1547          * we've already printed another section, skip this one.
1548          */
1549         if ( (ma->is_ma) && (ma->did_print) ) {
1550                 MSG_syslog(LOG_DEBUG, "Skipping part %s (%s)\n", partnum, cbtype);
1551                 return;
1552         }
1553         ma->did_print = 1;
1554
1555         if ( (!strcasecmp(cbtype, "text/plain"))
1556            || (IsEmptyStr(cbtype)) ) {
1557                 wptr = content;
1558                 if (length > 0) {
1559                         client_write(wptr, length);
1560                         if (wptr[length-1] != '\n') {
1561                                 cprintf("\n");
1562                         }
1563                 }
1564                 return;
1565         }
1566
1567         if (!strcasecmp(cbtype, "text/html")) {
1568                 ptr = html_to_ascii(content, length, 80, 0);
1569                 wlen = strlen(ptr);
1570                 client_write(ptr, wlen);
1571                 if ((wlen > 0) && (ptr[wlen-1] != '\n')) {
1572                         cprintf("\n");
1573                 }
1574                 free(ptr);
1575                 return;
1576         }
1577
1578         if (ma->use_fo_hooks) {
1579                 if (PerformFixedOutputHooks(cbtype, content, length)) {
1580                 /* above function returns nonzero if it handled the part */
1581                         return;
1582                 }
1583         }
1584
1585         if (strncasecmp(cbtype, "multipart/", 10)) {
1586                 cprintf("Part %s: %s (%s) (%ld bytes)\r\n",
1587                         partnum, filename, cbtype, (long)length);
1588                 return;
1589         }
1590 }
1591
1592 /*
1593  * The client is elegant and sophisticated and wants to be choosy about
1594  * MIME content types, so figure out which multipart/alternative part
1595  * we're going to send.
1596  *
1597  * We use a system of weights.  When we find a part that matches one of the
1598  * MIME types we've declared as preferential, we can store it in ma->chosen_part
1599  * and then set ma->chosen_pref to that MIME type's position in our preference
1600  * list.  If we then hit another match, we only replace the first match if
1601  * the preference value is lower.
1602  */
1603 void choose_preferred(char *name, char *filename, char *partnum, char *disp,
1604                 void *content, char *cbtype, char *cbcharset, size_t length,
1605                 char *encoding, char *cbid, void *cbuserdata)
1606 {
1607         struct CitContext *CCC = CC;
1608         char buf[1024];
1609         int i;
1610         struct ma_info *ma;
1611
1612         ma = (struct ma_info *)cbuserdata;
1613
1614         // NOTE: REMOVING THIS CONDITIONAL FIXES BUG 220
1615         //       http://bugzilla.citadel.org/show_bug.cgi?id=220
1616         // I don't know if there are any side effects!  Please TEST TEST TEST
1617         //if (ma->is_ma > 0) {
1618
1619         for (i=0; i<num_tokens(CCC->preferred_formats, '|'); ++i) {
1620                 extract_token(buf, CCC->preferred_formats, i, '|', sizeof buf);
1621                 if ( (!strcasecmp(buf, cbtype)) && (!ma->freeze) ) {
1622                         if (i < ma->chosen_pref) {
1623                                 MSG_syslog(LOG_DEBUG, "Setting chosen part: <%s>\n", partnum);
1624                                 safestrncpy(ma->chosen_part, partnum, sizeof ma->chosen_part);
1625                                 ma->chosen_pref = i;
1626                         }
1627                 }
1628         }
1629 }
1630
1631 /*
1632  * Now that we've chosen our preferred part, output it.
1633  */
1634 void output_preferred(char *name,
1635                       char *filename,
1636                       char *partnum,
1637                       char *disp,
1638                       void *content,
1639                       char *cbtype,
1640                       char *cbcharset,
1641                       size_t length,
1642                       char *encoding,
1643                       char *cbid,
1644                       void *cbuserdata)
1645 {
1646         struct CitContext *CCC = CC;
1647         int i;
1648         char buf[128];
1649         int add_newline = 0;
1650         char *text_content;
1651         struct ma_info *ma;
1652         char *decoded = NULL;
1653         size_t bytes_decoded;
1654         int rc = 0;
1655
1656         ma = (struct ma_info *)cbuserdata;
1657
1658         /* This is not the MIME part you're looking for... */
1659         if (strcasecmp(partnum, ma->chosen_part)) return;
1660
1661         /* If the content-type of this part is in our preferred formats
1662          * list, we can simply output it verbatim.
1663          */
1664         for (i=0; i<num_tokens(CCC->preferred_formats, '|'); ++i) {
1665                 extract_token(buf, CCC->preferred_formats, i, '|', sizeof buf);
1666                 if (!strcasecmp(buf, cbtype)) {
1667                         /* Yeah!  Go!  W00t!! */
1668                         if (ma->dont_decode == 0)
1669                                 rc = mime_decode_now (content,
1670                                                       length,
1671                                                       encoding,
1672                                                       &decoded,
1673                                                       &bytes_decoded);
1674                         if (rc < 0)
1675                                 break; /* Give us the chance, maybe theres another one. */
1676
1677                         if (rc == 0) text_content = (char *)content;
1678                         else {
1679                                 text_content = decoded;
1680                                 length = bytes_decoded;
1681                         }
1682
1683                         if (text_content[length-1] != '\n') {
1684                                 ++add_newline;
1685                         }
1686                         cprintf("Content-type: %s", cbtype);
1687                         if (!IsEmptyStr(cbcharset)) {
1688                                 cprintf("; charset=%s", cbcharset);
1689                         }
1690                         cprintf("\nContent-length: %d\n",
1691                                 (int)(length + add_newline) );
1692                         if (!IsEmptyStr(encoding)) {
1693                                 cprintf("Content-transfer-encoding: %s\n", encoding);
1694                         }
1695                         else {
1696                                 cprintf("Content-transfer-encoding: 7bit\n");
1697                         }
1698                         cprintf("X-Citadel-MSG4-Partnum: %s\n", partnum);
1699                         cprintf("\n");
1700                         if (client_write(text_content, length) == -1)
1701                         {
1702                                 MSGM_syslog(LOG_ERR, "output_preferred(): aborting due to write failure.\n");
1703                                 return;
1704                         }
1705                         if (add_newline) cprintf("\n");
1706                         if (decoded != NULL) free(decoded);
1707                         return;
1708                 }
1709         }
1710
1711         /* No translations required or possible: output as text/plain */
1712         cprintf("Content-type: text/plain\n\n");
1713         rc = 0;
1714         if (ma->dont_decode == 0)
1715                 rc = mime_decode_now (content,
1716                                       length,
1717                                       encoding,
1718                                       &decoded,
1719                                       &bytes_decoded);
1720         if (rc < 0)
1721                 return; /* Give us the chance, maybe theres another one. */
1722
1723         if (rc == 0) text_content = (char *)content;
1724         else {
1725                 text_content = decoded;
1726                 length = bytes_decoded;
1727         }
1728
1729         fixed_output(name, filename, partnum, disp, text_content, cbtype, cbcharset,
1730                         length, encoding, cbid, cbuserdata);
1731         if (decoded != NULL) free(decoded);
1732 }
1733
1734
1735 struct encapmsg {
1736         char desired_section[64];
1737         char *msg;
1738         size_t msglen;
1739 };
1740
1741
1742 /*
1743  * Callback function for
1744  */
1745 void extract_encapsulated_message(char *name, char *filename, char *partnum, char *disp,
1746                    void *content, char *cbtype, char *cbcharset, size_t length,
1747                    char *encoding, char *cbid, void *cbuserdata)
1748 {
1749         struct encapmsg *encap;
1750
1751         encap = (struct encapmsg *)cbuserdata;
1752
1753         /* Only proceed if this is the desired section... */
1754         if (!strcasecmp(encap->desired_section, partnum)) {
1755                 encap->msglen = length;
1756                 encap->msg = malloc(length + 2);
1757                 memcpy(encap->msg, content, length);
1758                 return;
1759         }
1760 }
1761
1762
1763 /*
1764  * Determine whether the specified message exists in the cached_msglist
1765  * (This is a security check)
1766  */
1767 int check_cached_msglist(long msgnum) {
1768         struct CitContext *CCC = CC;
1769
1770         /* cases in which we skip the check */
1771         if (!CCC) return om_ok;                                         /* not a session */
1772         if (CCC->client_socket <= 0) return om_ok;                      /* not a client session */
1773         if (CCC->cached_msglist == NULL) return om_access_denied;       /* no msglist fetched */
1774         if (CCC->cached_num_msgs == 0) return om_access_denied;         /* nothing to check */
1775
1776
1777         /* Do a binary search within the cached_msglist for the requested msgnum */
1778         int min = 0;
1779         int max = (CC->cached_num_msgs - 1);
1780
1781         while (max >= min) {
1782                 int middle = min + (max-min) / 2 ;
1783                 if (msgnum == CCC->cached_msglist[middle]) {
1784                         return om_ok;
1785                 }
1786                 if (msgnum > CC->cached_msglist[middle]) {
1787                         min = middle + 1;
1788                 }
1789                 else {
1790                         max = middle - 1;
1791                 }
1792         }
1793
1794         return om_access_denied;
1795 }
1796
1797
1798
1799 /*
1800  * Get a message off disk.  (returns om_* values found in msgbase.h)
1801  *
1802  */
1803 int CtdlOutputMsg(long msg_num,         /* message number (local) to fetch */
1804                   int mode,             /* how would you like that message? */
1805                   int headers_only,     /* eschew the message body? */
1806                   int do_proto,         /* do Citadel protocol responses? */
1807                   int crlf,             /* Use CRLF newlines instead of LF? */
1808                   char *section,        /* NULL or a message/rfc822 section */
1809                   int flags,            /* various flags; see msgbase.h */
1810                   char **Author,
1811                   char **Address
1812 ) {
1813         struct CitContext *CCC = CC;
1814         struct CtdlMessage *TheMessage = NULL;
1815         int retcode = CIT_OK;
1816         struct encapmsg encap;
1817         int r;
1818
1819         MSG_syslog(LOG_DEBUG, "CtdlOutputMsg(msgnum=%ld, mode=%d, section=%s)\n",
1820                 msg_num, mode,
1821                 (section ? section : "<>")
1822         );
1823
1824         r = CtdlDoIHavePermissionToReadMessagesInThisRoom();
1825         if (r != om_ok) {
1826                 if (do_proto) {
1827                         if (r == om_not_logged_in) {
1828                                 cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN);
1829                         }
1830                         else {
1831                                 cprintf("%d An unknown error has occurred.\n", ERROR);
1832                         }
1833                 }
1834                 return(r);
1835         }
1836
1837         /*
1838          * Check to make sure the message is actually IN this room
1839          */
1840         r = check_cached_msglist(msg_num);
1841         if (r == om_access_denied) {
1842                 /* Not in the cache?  We get ONE shot to check it again. */
1843                 CtdlForEachMessage(MSGS_ALL, 0L, NULL, NULL, NULL, NULL, NULL);
1844                 r = check_cached_msglist(msg_num);
1845         }
1846         if (r != om_ok) {
1847                 MSG_syslog(LOG_DEBUG, "Security check fail: message %ld is not in %s\n",
1848                            msg_num, CCC->room.QRname
1849                 );
1850                 if (do_proto) {
1851                         if (r == om_access_denied) {
1852                                 cprintf("%d message %ld was not found in this room\n",
1853                                         ERROR + HIGHER_ACCESS_REQUIRED,
1854                                         msg_num
1855                                 );
1856                         }
1857                 }
1858                 return(r);
1859         }
1860
1861         /*
1862          * Fetch the message from disk.  If we're in HEADERS_FAST mode,
1863          * request that we don't even bother loading the body into memory.
1864          */
1865         if (headers_only == HEADERS_FAST) {
1866                 TheMessage = CtdlFetchMessage(msg_num, 0);
1867         }
1868         else {
1869                 TheMessage = CtdlFetchMessage(msg_num, 1);
1870         }
1871
1872         if (TheMessage == NULL) {
1873                 if (do_proto) cprintf("%d Can't locate msg %ld on disk\n",
1874                         ERROR + MESSAGE_NOT_FOUND, msg_num);
1875                 return(om_no_such_msg);
1876         }
1877
1878         /* Here is the weird form of this command, to process only an
1879          * encapsulated message/rfc822 section.
1880          */
1881         if (section) if (!IsEmptyStr(section)) if (strcmp(section, "0")) {
1882                 memset(&encap, 0, sizeof encap);
1883                 safestrncpy(encap.desired_section, section, sizeof encap.desired_section);
1884                 mime_parser(TheMessage->cm_fields[eMesageText],
1885                         NULL,
1886                         *extract_encapsulated_message,
1887                         NULL, NULL, (void *)&encap, 0
1888                 );
1889
1890                 if ((Author != NULL) && (*Author == NULL))
1891                 {
1892                         *Author = TheMessage->cm_fields[eAuthor];
1893                         TheMessage->cm_fields[eAuthor] = NULL;
1894                 }
1895                 if ((Address != NULL) && (*Address == NULL))
1896                 {
1897                         *Address = TheMessage->cm_fields[erFc822Addr];
1898                         TheMessage->cm_fields[erFc822Addr] = NULL;
1899                 }
1900                 CM_Free(TheMessage);
1901                 TheMessage = NULL;
1902
1903                 if (encap.msg) {
1904                         encap.msg[encap.msglen] = 0;
1905                         TheMessage = convert_internet_message(encap.msg);
1906                         encap.msg = NULL;       /* no free() here, TheMessage owns it now */
1907
1908                         /* Now we let it fall through to the bottom of this
1909                          * function, because TheMessage now contains the
1910                          * encapsulated message instead of the top-level
1911                          * message.  Isn't that neat?
1912                          */
1913                 }
1914                 else {
1915                         if (do_proto) {
1916                                 cprintf("%d msg %ld has no part %s\n",
1917                                         ERROR + MESSAGE_NOT_FOUND,
1918                                         msg_num,
1919                                         section);
1920                         }
1921                         retcode = om_no_such_msg;
1922                 }
1923
1924         }
1925
1926         /* Ok, output the message now */
1927         if (retcode == CIT_OK)
1928                 retcode = CtdlOutputPreLoadedMsg(TheMessage, mode, headers_only, do_proto, crlf, flags);
1929         if ((Author != NULL) && (*Author == NULL))
1930         {
1931                 *Author = TheMessage->cm_fields[eAuthor];
1932                 TheMessage->cm_fields[eAuthor] = NULL;
1933         }
1934         if ((Address != NULL) && (*Address == NULL))
1935         {
1936                 *Address = TheMessage->cm_fields[erFc822Addr];
1937                 TheMessage->cm_fields[erFc822Addr] = NULL;
1938         }
1939
1940         CM_Free(TheMessage);
1941
1942         return(retcode);
1943 }
1944
1945
1946 char *qp_encode_email_addrs(char *source)
1947 {
1948         struct CitContext *CCC = CC;
1949         char *user, *node, *name;
1950         const char headerStr[] = "=?UTF-8?Q?";
1951         char *Encoded;
1952         char *EncodedName;
1953         char *nPtr;
1954         int need_to_encode = 0;
1955         long SourceLen;
1956         long EncodedMaxLen;
1957         long nColons = 0;
1958         long *AddrPtr;
1959         long *AddrUtf8;
1960         long nAddrPtrMax = 50;
1961         long nmax;
1962         int InQuotes = 0;
1963         int i, n;
1964
1965         if (source == NULL) return source;
1966         if (IsEmptyStr(source)) return source;
1967         if (MessageDebugEnabled != 0) cit_backtrace();
1968         MSG_syslog(LOG_DEBUG, "qp_encode_email_addrs: [%s]\n", source);
1969
1970         AddrPtr = malloc (sizeof (long) * nAddrPtrMax);
1971         AddrUtf8 = malloc (sizeof (long) * nAddrPtrMax);
1972         memset(AddrUtf8, 0, sizeof (long) * nAddrPtrMax);
1973         *AddrPtr = 0;
1974         i = 0;
1975         while (!IsEmptyStr (&source[i])) {
1976                 if (nColons >= nAddrPtrMax){
1977                         long *ptr;
1978
1979                         ptr = (long *) malloc(sizeof (long) * nAddrPtrMax * 2);
1980                         memcpy (ptr, AddrPtr, sizeof (long) * nAddrPtrMax);
1981                         free (AddrPtr), AddrPtr = ptr;
1982
1983                         ptr = (long *) malloc(sizeof (long) * nAddrPtrMax * 2);
1984                         memset(&ptr[nAddrPtrMax], 0,
1985                                sizeof (long) * nAddrPtrMax);
1986
1987                         memcpy (ptr, AddrUtf8, sizeof (long) * nAddrPtrMax);
1988                         free (AddrUtf8), AddrUtf8 = ptr;
1989                         nAddrPtrMax *= 2;
1990                 }
1991                 if (((unsigned char) source[i] < 32) ||
1992                     ((unsigned char) source[i] > 126)) {
1993                         need_to_encode = 1;
1994                         AddrUtf8[nColons] = 1;
1995                 }
1996                 if (source[i] == '"')
1997                         InQuotes = !InQuotes;
1998                 if (!InQuotes && source[i] == ',') {
1999                         AddrPtr[nColons] = i;
2000                         nColons++;
2001                 }
2002                 i++;
2003         }
2004         if (need_to_encode == 0) {
2005                 free(AddrPtr);
2006                 free(AddrUtf8);
2007                 return source;
2008         }
2009
2010         SourceLen = i;
2011         EncodedMaxLen = nColons * (sizeof(headerStr) + 3) + SourceLen * 3;
2012         Encoded = (char*) malloc (EncodedMaxLen);
2013
2014         for (i = 0; i < nColons; i++)
2015                 source[AddrPtr[i]++] = '\0';
2016         /* TODO: if libidn, this might get larger*/
2017         user = malloc(SourceLen + 1);
2018         node = malloc(SourceLen + 1);
2019         name = malloc(SourceLen + 1);
2020
2021         nPtr = Encoded;
2022         *nPtr = '\0';
2023         for (i = 0; i < nColons && nPtr != NULL; i++) {
2024                 nmax = EncodedMaxLen - (nPtr - Encoded);
2025                 if (AddrUtf8[i]) {
2026                         process_rfc822_addr(&source[AddrPtr[i]],
2027                                             user,
2028                                             node,
2029                                             name);
2030                         /* TODO: libIDN here ! */
2031                         if (IsEmptyStr(name)) {
2032                                 n = snprintf(nPtr, nmax,
2033                                              (i==0)?"%s@%s" : ",%s@%s",
2034                                              user, node);
2035                         }
2036                         else {
2037                                 EncodedName = rfc2047encode(name, strlen(name));
2038                                 n = snprintf(nPtr, nmax,
2039                                              (i==0)?"%s <%s@%s>" : ",%s <%s@%s>",
2040                                              EncodedName, user, node);
2041                                 free(EncodedName);
2042                         }
2043                 }
2044                 else {
2045                         n = snprintf(nPtr, nmax,
2046                                      (i==0)?"%s" : ",%s",
2047                                      &source[AddrPtr[i]]);
2048                 }
2049                 if (n > 0 )
2050                         nPtr += n;
2051                 else {
2052                         char *ptr, *nnPtr;
2053                         ptr = (char*) malloc(EncodedMaxLen * 2);
2054                         memcpy(ptr, Encoded, EncodedMaxLen);
2055                         nnPtr = ptr + (nPtr - Encoded), nPtr = nnPtr;
2056                         free(Encoded), Encoded = ptr;
2057                         EncodedMaxLen *= 2;
2058                         i--; /* do it once more with properly lengthened buffer */
2059                 }
2060         }
2061         for (i = 0; i < nColons; i++)
2062                 source[--AddrPtr[i]] = ',';
2063
2064         free(user);
2065         free(node);
2066         free(name);
2067         free(AddrUtf8);
2068         free(AddrPtr);
2069         return Encoded;
2070 }
2071
2072
2073 /* If the last item in a list of recipients was truncated to a partial address,
2074  * remove it completely in order to avoid choking libSieve
2075  */
2076 void sanitize_truncated_recipient(char *str)
2077 {
2078         if (!str) return;
2079         if (num_tokens(str, ',') < 2) return;
2080
2081         int len = strlen(str);
2082         if (len < 900) return;
2083         if (len > 998) str[998] = 0;
2084
2085         char *cptr = strrchr(str, ',');
2086         if (!cptr) return;
2087
2088         char *lptr = strchr(cptr, '<');
2089         char *rptr = strchr(cptr, '>');
2090
2091         if ( (lptr) && (rptr) && (rptr > lptr) ) return;
2092
2093         *cptr = 0;
2094 }
2095
2096
2097 void OutputCtdlMsgHeaders(
2098         struct CtdlMessage *TheMessage,
2099         int do_proto)           /* do Citadel protocol responses? */
2100 {
2101         int i;
2102         int suppress_f = 0;
2103         char buf[SIZ];
2104         char display_name[256];
2105
2106         /* begin header processing loop for Citadel message format */
2107         safestrncpy(display_name, "<unknown>", sizeof display_name);
2108         if (!CM_IsEmpty(TheMessage, eAuthor)) {
2109                 strcpy(buf, TheMessage->cm_fields[eAuthor]);
2110                 if (TheMessage->cm_anon_type == MES_ANONONLY) {
2111                         safestrncpy(display_name, "****", sizeof display_name);
2112                 }
2113                 else if (TheMessage->cm_anon_type == MES_ANONOPT) {
2114                         safestrncpy(display_name, "anonymous", sizeof display_name);
2115                 }
2116                 else {
2117                         safestrncpy(display_name, buf, sizeof display_name);
2118                 }
2119                 if ((is_room_aide())
2120                     && ((TheMessage->cm_anon_type == MES_ANONONLY)
2121                         || (TheMessage->cm_anon_type == MES_ANONOPT))) {
2122                         size_t tmp = strlen(display_name);
2123                         snprintf(&display_name[tmp],
2124                                  sizeof display_name - tmp,
2125                                  " [%s]", buf);
2126                 }
2127         }
2128
2129         /* Don't show Internet address for users on the
2130          * local Citadel network.
2131          */
2132         suppress_f = 0;
2133         if (!CM_IsEmpty(TheMessage, eNodeName) &&
2134             (haschar(TheMessage->cm_fields[eNodeName], '.') == 0))
2135         {
2136                 suppress_f = 1;
2137         }
2138
2139         /* Now spew the header fields in the order we like them. */
2140         for (i=0; i< NDiskFields; ++i) {
2141                 eMsgField Field;
2142                 Field = FieldOrder[i];
2143                 if (Field != eMesageText) {
2144                         if ( (!CM_IsEmpty(TheMessage, Field))
2145                              && (msgkeys[Field] != NULL) ) {
2146                                 if ((Field == eenVelopeTo) ||
2147                                     (Field == eRecipient) ||
2148                                     (Field == eCarbonCopY)) {
2149                                         sanitize_truncated_recipient(TheMessage->cm_fields[Field]);
2150                                 }
2151                                 if (Field == eAuthor) {
2152                                         if (do_proto) cprintf("%s=%s\n",
2153                                                               msgkeys[Field],
2154                                                               display_name);
2155                                 }
2156                                 else if ((Field == erFc822Addr) && (suppress_f)) {
2157                                         /* do nothing */
2158                                 }
2159                                 /* Masquerade display name if needed */
2160                                 else {
2161                                         if (do_proto) cprintf("%s=%s\n",
2162                                                               msgkeys[Field],
2163                                                               TheMessage->cm_fields[Field]
2164                                                 );
2165                                 }
2166                         }
2167                 }
2168         }
2169
2170 }
2171
2172 void OutputRFC822MsgHeaders(
2173         struct CtdlMessage *TheMessage,
2174         int flags,              /* should the bessage be exported clean */
2175         const char *nl,
2176         char *mid, long sizeof_mid,
2177         char *suser, long sizeof_suser,
2178         char *luser, long sizeof_luser,
2179         char *fuser, long sizeof_fuser,
2180         char *snode, long sizeof_snode)
2181 {
2182         char datestamp[100];
2183         int subject_found = 0;
2184         char buf[SIZ];
2185         int i, j, k;
2186         char *mptr = NULL;
2187         char *mpptr = NULL;
2188         char *hptr;
2189
2190         for (i = 0; i < 256; ++i) {
2191                 if (TheMessage->cm_fields[i]) {
2192                         mptr = mpptr = TheMessage->cm_fields[i];
2193
2194                         if (i == eAuthor) {
2195                                 safestrncpy(luser, mptr, sizeof_luser);
2196                                 safestrncpy(suser, mptr, sizeof_suser);
2197                         }
2198                         else if (i == 'Y') {
2199                                 if ((flags & QP_EADDR) != 0) {
2200                                         mptr = qp_encode_email_addrs(mptr);
2201                                 }
2202                                 sanitize_truncated_recipient(mptr);
2203                                 cprintf("CC: %s%s", mptr, nl);
2204                         }
2205                         else if (i == 'P') {
2206                                 cprintf("Return-Path: %s%s", mptr, nl);
2207                         }
2208                         else if (i == eListID) {
2209                                 cprintf("List-ID: %s%s", mptr, nl);
2210                         }
2211                         else if (i == 'V') {
2212                                 if ((flags & QP_EADDR) != 0)
2213                                         mptr = qp_encode_email_addrs(mptr);
2214                                 hptr = mptr;
2215                                 while ((*hptr != '\0') && isspace(*hptr))
2216                                         hptr ++;
2217                                 if (!IsEmptyStr(hptr))
2218                                         cprintf("Envelope-To: %s%s", hptr, nl);
2219                         }
2220                         else if (i == 'U') {
2221                                 cprintf("Subject: %s%s", mptr, nl);
2222                                 subject_found = 1;
2223                         }
2224                         else if (i == 'I')
2225                                 safestrncpy(mid, mptr, sizeof_mid); /// TODO: detect @ here and copy @nodename in if not found.
2226                         else if (i == erFc822Addr)
2227                                 safestrncpy(fuser, mptr, sizeof_fuser);
2228                         /* else if (i == 'O')
2229                            cprintf("X-Citadel-Room: %s%s",
2230                            mptr, nl); */
2231                         else if (i == 'N')
2232                                 safestrncpy(snode, mptr, sizeof_snode);
2233                         else if (i == 'R')
2234                         {
2235                                 if (haschar(mptr, '@') == 0)
2236                                 {
2237                                         sanitize_truncated_recipient(mptr);
2238                                         cprintf("To: %s@%s", mptr, config.c_fqdn);
2239                                         cprintf("%s", nl);
2240                                 }
2241                                 else
2242                                 {
2243                                         if ((flags & QP_EADDR) != 0) {
2244                                                 mptr = qp_encode_email_addrs(mptr);
2245                                         }
2246                                         sanitize_truncated_recipient(mptr);
2247                                         cprintf("To: %s", mptr);
2248                                         cprintf("%s", nl);
2249                                 }
2250                         }
2251                         else if (i == 'T') {
2252                                 datestring(datestamp, sizeof datestamp,
2253                                            atol(mptr), DATESTRING_RFC822);
2254                                 cprintf("Date: %s%s", datestamp, nl);
2255                         }
2256                         else if (i == 'W') {
2257                                 cprintf("References: ");
2258                                 k = num_tokens(mptr, '|');
2259                                 for (j=0; j<k; ++j) {
2260                                         extract_token(buf, mptr, j, '|', sizeof buf);
2261                                         cprintf("<%s>", buf);
2262                                         if (j == (k-1)) {
2263                                                 cprintf("%s", nl);
2264                                         }
2265                                         else {
2266                                                 cprintf(" ");
2267                                         }
2268                                 }
2269                         }
2270                         else if (i == eReplyTo) {
2271                                 hptr = mptr;
2272                                 while ((*hptr != '\0') && isspace(*hptr))
2273                                         hptr ++;
2274                                 if (!IsEmptyStr(hptr))
2275                                         cprintf("Reply-To: %s%s", mptr, nl);
2276                         }
2277                         if (mptr != mpptr)
2278                                 free (mptr);
2279                 }
2280         }
2281         if (subject_found == 0) {
2282                 cprintf("Subject: (no subject)%s", nl);
2283         }
2284 }
2285
2286
2287 void Dump_RFC822HeadersBody(
2288         struct CtdlMessage *TheMessage,
2289         int headers_only,       /* eschew the message body? */
2290         int flags,              /* should the bessage be exported clean? */
2291
2292         const char *nl)
2293 {
2294         cit_uint8_t prev_ch;
2295         int eoh = 0;
2296         const char *StartOfText = StrBufNOTNULL;
2297         char outbuf[1024];
2298         int outlen = 0;
2299         int nllen = strlen(nl);
2300         char *mptr;
2301
2302         mptr = TheMessage->cm_fields[eMesageText];
2303
2304
2305         prev_ch = '\0';
2306         while (*mptr != '\0') {
2307                 if (*mptr == '\r') {
2308                         /* do nothing */
2309                 }
2310                 else {
2311                         if ((!eoh) &&
2312                             (*mptr == '\n'))
2313                         {
2314                                 eoh = (*(mptr+1) == '\r') && (*(mptr+2) == '\n');
2315                                 if (!eoh)
2316                                         eoh = *(mptr+1) == '\n';
2317                                 if (eoh)
2318                                 {
2319                                         StartOfText = mptr;
2320                                         StartOfText = strchr(StartOfText, '\n');
2321                                         StartOfText = strchr(StartOfText, '\n');
2322                                 }
2323                         }
2324                         if (((headers_only == HEADERS_NONE) && (mptr >= StartOfText)) ||
2325                             ((headers_only == HEADERS_ONLY) && (mptr < StartOfText)) ||
2326                             ((headers_only != HEADERS_NONE) &&
2327                              (headers_only != HEADERS_ONLY))
2328                                 ) {
2329                                 if (*mptr == '\n') {
2330                                         memcpy(&outbuf[outlen], nl, nllen);
2331                                         outlen += nllen;
2332                                         outbuf[outlen] = '\0';
2333                                 }
2334                                 else {
2335                                         outbuf[outlen++] = *mptr;
2336                                 }
2337                         }
2338                 }
2339                 if (flags & ESC_DOT)
2340                 {
2341                         if ((prev_ch == '\n') &&
2342                             (*mptr == '.') &&
2343                             ((*(mptr+1) == '\r') || (*(mptr+1) == '\n')))
2344                         {
2345                                 outbuf[outlen++] = '.';
2346                         }
2347                         prev_ch = *mptr;
2348                 }
2349                 ++mptr;
2350                 if (outlen > 1000) {
2351                         if (client_write(outbuf, outlen) == -1)
2352                         {
2353                                 struct CitContext *CCC = CC;
2354                                 MSGM_syslog(LOG_ERR, "Dump_RFC822HeadersBody(): aborting due to write failure.\n");
2355                                 return;
2356                         }
2357                         outlen = 0;
2358                 }
2359         }
2360         if (outlen > 0) {
2361                 client_write(outbuf, outlen);
2362         }
2363 }
2364
2365
2366
2367 /* If the format type on disk is 1 (fixed-format), then we want
2368  * everything to be output completely literally ... regardless of
2369  * what message transfer format is in use.
2370  */
2371 void DumpFormatFixed(
2372         struct CtdlMessage *TheMessage,
2373         int mode,               /* how would you like that message? */
2374         const char *nl)
2375 {
2376         cit_uint8_t ch;
2377         char buf[SIZ];
2378         int buflen;
2379         int xlline = 0;
2380         int nllen = strlen (nl);
2381         char *mptr;
2382
2383         mptr = TheMessage->cm_fields[eMesageText];
2384
2385         if (mode == MT_MIME) {
2386                 cprintf("Content-type: text/plain\n\n");
2387         }
2388         *buf = '\0';
2389         buflen = 0;
2390         while (ch = *mptr++, ch > 0) {
2391                 if (ch == '\n')
2392                         ch = '\r';
2393
2394                 if ((buflen > 250) && (!xlline)){
2395                         int tbuflen;
2396                         tbuflen = buflen;
2397
2398                         while ((buflen > 0) &&
2399                                (!isspace(buf[buflen])))
2400                                 buflen --;
2401                         if (buflen == 0) {
2402                                 xlline = 1;
2403                         }
2404                         else {
2405                                 mptr -= tbuflen - buflen;
2406                                 buf[buflen] = '\0';
2407                                 ch = '\r';
2408                         }
2409                 }
2410                 /* if we reach the outer bounds of our buffer,
2411                    abort without respect what whe purge. */
2412                 if (xlline &&
2413                     ((isspace(ch)) ||
2414                      (buflen > SIZ - nllen - 2)))
2415                         ch = '\r';
2416
2417                 if (ch == '\r') {
2418                         memcpy (&buf[buflen], nl, nllen);
2419                         buflen += nllen;
2420                         buf[buflen] = '\0';
2421
2422                         if (client_write(buf, buflen) == -1)
2423                         {
2424                                 struct CitContext *CCC = CC;
2425                                 MSGM_syslog(LOG_ERR, "DumpFormatFixed(): aborting due to write failure.\n");
2426                                 return;
2427                         }
2428                         *buf = '\0';
2429                         buflen = 0;
2430                         xlline = 0;
2431                 } else {
2432                         buf[buflen] = ch;
2433                         buflen++;
2434                 }
2435         }
2436         buf[buflen] = '\0';
2437         if (!IsEmptyStr(buf))
2438                 cprintf("%s%s", buf, nl);
2439 }
2440
2441 /*
2442  * Get a message off disk.  (returns om_* values found in msgbase.h)
2443  */
2444 int CtdlOutputPreLoadedMsg(
2445                 struct CtdlMessage *TheMessage,
2446                 int mode,               /* how would you like that message? */
2447                 int headers_only,       /* eschew the message body? */
2448                 int do_proto,           /* do Citadel protocol responses? */
2449                 int crlf,               /* Use CRLF newlines instead of LF? */
2450                 int flags               /* should the bessage be exported clean? */
2451 ) {
2452         struct CitContext *CCC = CC;
2453         int i;
2454         char *mptr = NULL;
2455         const char *nl; /* newline string */
2456         struct ma_info ma;
2457
2458         /* Buffers needed for RFC822 translation.  These are all filled
2459          * using functions that are bounds-checked, and therefore we can
2460          * make them substantially smaller than SIZ.
2461          */
2462         char suser[100];
2463         char luser[100];
2464         char fuser[100];
2465         char snode[100];
2466         char mid[100];
2467
2468         MSG_syslog(LOG_DEBUG, "CtdlOutputPreLoadedMsg(TheMessage=%s, %d, %d, %d, %d\n",
2469                    ((TheMessage == NULL) ? "NULL" : "not null"),
2470                    mode, headers_only, do_proto, crlf);
2471
2472         strcpy(mid, "unknown");
2473         nl = (crlf ? "\r\n" : "\n");
2474
2475         if (!CM_IsValidMsg(TheMessage)) {
2476                 MSGM_syslog(LOG_ERR,
2477                             "ERROR: invalid preloaded message for output\n");
2478                 cit_backtrace ();
2479                 return(om_no_such_msg);
2480         }
2481
2482         /* Suppress envelope recipients if required to avoid disclosing BCC addresses.
2483          * Pad it with spaces in order to avoid changing the RFC822 length of the message.
2484          */
2485         if ( (flags & SUPPRESS_ENV_TO) && (!CM_IsEmpty(TheMessage, eenVelopeTo)) ) {
2486                 memset(TheMessage->cm_fields[eenVelopeTo], ' ', strlen(TheMessage->cm_fields[eenVelopeTo]));
2487         }
2488
2489         /* Are we downloading a MIME component? */
2490         if (mode == MT_DOWNLOAD) {
2491                 if (TheMessage->cm_format_type != FMT_RFC822) {
2492                         if (do_proto)
2493                                 cprintf("%d This is not a MIME message.\n",
2494                                 ERROR + ILLEGAL_VALUE);
2495                 } else if (CCC->download_fp != NULL) {
2496                         if (do_proto) cprintf(
2497                                 "%d You already have a download open.\n",
2498                                 ERROR + RESOURCE_BUSY);
2499                 } else {
2500                         /* Parse the message text component */
2501                         mptr = TheMessage->cm_fields[eMesageText];
2502                         mime_parser(mptr, NULL, *mime_download, NULL, NULL, NULL, 0);
2503                         /* If there's no file open by this time, the requested
2504                          * section wasn't found, so print an error
2505                          */
2506                         if (CCC->download_fp == NULL) {
2507                                 if (do_proto) cprintf(
2508                                         "%d Section %s not found.\n",
2509                                         ERROR + FILE_NOT_FOUND,
2510                                         CCC->download_desired_section);
2511                         }
2512                 }
2513                 return((CCC->download_fp != NULL) ? om_ok : om_mime_error);
2514         }
2515
2516         /* MT_SPEW_SECTION is like MT_DOWNLOAD except it outputs the whole MIME part
2517          * in a single server operation instead of opening a download file.
2518          */
2519         if (mode == MT_SPEW_SECTION) {
2520                 if (TheMessage->cm_format_type != FMT_RFC822) {
2521                         if (do_proto)
2522                                 cprintf("%d This is not a MIME message.\n",
2523                                 ERROR + ILLEGAL_VALUE);
2524                 } else {
2525                         /* Parse the message text component */
2526                         int found_it = 0;
2527
2528                         mptr = TheMessage->cm_fields[eMesageText];
2529                         mime_parser(mptr, NULL, *mime_spew_section, NULL, NULL, (void *)&found_it, 0);
2530                         /* If section wasn't found, print an error
2531                          */
2532                         if (!found_it) {
2533                                 if (do_proto) cprintf(
2534                                         "%d Section %s not found.\n",
2535                                         ERROR + FILE_NOT_FOUND,
2536                                         CCC->download_desired_section);
2537                         }
2538                 }
2539                 return((CCC->download_fp != NULL) ? om_ok : om_mime_error);
2540         }
2541
2542         /* now for the user-mode message reading loops */
2543         if (do_proto) cprintf("%d msg:\n", LISTING_FOLLOWS);
2544
2545         /* Does the caller want to skip the headers? */
2546         if (headers_only == HEADERS_NONE) goto START_TEXT;
2547
2548         /* Tell the client which format type we're using. */
2549         if ( (mode == MT_CITADEL) && (do_proto) ) {
2550                 cprintf("type=%d\n", TheMessage->cm_format_type);
2551         }
2552
2553         /* nhdr=yes means that we're only displaying headers, no body */
2554         if ( (TheMessage->cm_anon_type == MES_ANONONLY)
2555            && ((mode == MT_CITADEL) || (mode == MT_MIME))
2556            && (do_proto)
2557            ) {
2558                 cprintf("nhdr=yes\n");
2559         }
2560
2561         if ((mode == MT_CITADEL) || (mode == MT_MIME))
2562                 OutputCtdlMsgHeaders(TheMessage, do_proto);
2563
2564
2565         /* begin header processing loop for RFC822 transfer format */
2566         strcpy(suser, "");
2567         strcpy(luser, "");
2568         strcpy(fuser, "");
2569         strcpy(snode, NODENAME);
2570         if (mode == MT_RFC822)
2571                 OutputRFC822MsgHeaders(
2572                         TheMessage,
2573                         flags,
2574                         nl,
2575                         mid, sizeof(mid),
2576                         suser, sizeof(suser),
2577                         luser, sizeof(luser),
2578                         fuser, sizeof(fuser),
2579                         snode, sizeof(snode)
2580                         );
2581
2582
2583         for (i=0; !IsEmptyStr(&suser[i]); ++i) {
2584                 suser[i] = tolower(suser[i]);
2585                 if (!isalnum(suser[i])) suser[i]='_';
2586         }
2587
2588         if (mode == MT_RFC822) {
2589                 if (!strcasecmp(snode, NODENAME)) {
2590                         safestrncpy(snode, FQDN, sizeof snode);
2591                 }
2592
2593                 /* Construct a fun message id */
2594                 cprintf("Message-ID: <%s", mid);/// todo: this possibly breaks threadding mails.
2595                 if (strchr(mid, '@')==NULL) {
2596                         cprintf("@%s", snode);
2597                 }
2598                 cprintf(">%s", nl);
2599
2600                 if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONONLY)) {
2601                         cprintf("From: \"----\" <x@x.org>%s", nl);
2602                 }
2603                 else if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONOPT)) {
2604                         cprintf("From: \"anonymous\" <x@x.org>%s", nl);
2605                 }
2606                 else if (!IsEmptyStr(fuser)) {
2607                         cprintf("From: \"%s\" <%s>%s", luser, fuser, nl);
2608                 }
2609                 else {
2610                         cprintf("From: \"%s\" <%s@%s>%s", luser, suser, snode, nl);
2611                 }
2612
2613                 /* Blank line signifying RFC822 end-of-headers */
2614                 if (TheMessage->cm_format_type != FMT_RFC822) {
2615                         cprintf("%s", nl);
2616                 }
2617         }
2618
2619         /* end header processing loop ... at this point, we're in the text */
2620 START_TEXT:
2621         if (headers_only == HEADERS_FAST) goto DONE;
2622
2623         /* Tell the client about the MIME parts in this message */
2624         if (TheMessage->cm_format_type == FMT_RFC822) {
2625                 if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
2626                         mptr = TheMessage->cm_fields[eMesageText];
2627                         memset(&ma, 0, sizeof(struct ma_info));
2628                         mime_parser(mptr, NULL,
2629                                 (do_proto ? *list_this_part : NULL),
2630                                 (do_proto ? *list_this_pref : NULL),
2631                                 (do_proto ? *list_this_suff : NULL),
2632                                 (void *)&ma, 1);
2633                 }
2634                 else if (mode == MT_RFC822) {   /* unparsed RFC822 dump */
2635                         Dump_RFC822HeadersBody(
2636                                 TheMessage,
2637                                 headers_only,
2638                                 flags,
2639                                 nl);
2640                         goto DONE;
2641                 }
2642         }
2643
2644         if (headers_only == HEADERS_ONLY) {
2645                 goto DONE;
2646         }
2647
2648         /* signify start of msg text */
2649         if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
2650                 if (do_proto) cprintf("text\n");
2651         }
2652
2653         if (TheMessage->cm_format_type == FMT_FIXED)
2654                 DumpFormatFixed(
2655                         TheMessage,
2656                         mode,           /* how would you like that message? */
2657                         nl);
2658
2659         /* If the message on disk is format 0 (Citadel vari-format), we
2660          * output using the formatter at 80 columns.  This is the final output
2661          * form if the transfer format is RFC822, but if the transfer format
2662          * is Citadel proprietary, it'll still work, because the indentation
2663          * for new paragraphs is correct and the client will reformat the
2664          * message to the reader's screen width.
2665          */
2666         if (TheMessage->cm_format_type == FMT_CITADEL) {
2667                 mptr = TheMessage->cm_fields[eMesageText];
2668
2669                 if (mode == MT_MIME) {
2670                         cprintf("Content-type: text/x-citadel-variformat\n\n");
2671                 }
2672                 memfmout(mptr, nl);
2673         }
2674
2675         /* If the message on disk is format 4 (MIME), we've gotta hand it
2676          * off to the MIME parser.  The client has already been told that
2677          * this message is format 1 (fixed format), so the callback function
2678          * we use will display those parts as-is.
2679          */
2680         if (TheMessage->cm_format_type == FMT_RFC822) {
2681                 memset(&ma, 0, sizeof(struct ma_info));
2682
2683                 if (mode == MT_MIME) {
2684                         ma.use_fo_hooks = 0;
2685                         strcpy(ma.chosen_part, "1");
2686                         ma.chosen_pref = 9999;
2687                         ma.dont_decode = CCC->msg4_dont_decode;
2688                         mime_parser(mptr, NULL,
2689                                 *choose_preferred, *fixed_output_pre,
2690                                 *fixed_output_post, (void *)&ma, 1);
2691                         mime_parser(mptr, NULL,
2692                                 *output_preferred, NULL, NULL, (void *)&ma, 1);
2693                 }
2694                 else {
2695                         ma.use_fo_hooks = 1;
2696                         mime_parser(mptr, NULL,
2697                                 *fixed_output, *fixed_output_pre,
2698                                 *fixed_output_post, (void *)&ma, 0);
2699                 }
2700
2701         }
2702
2703 DONE:   /* now we're done */
2704         if (do_proto) cprintf("000\n");
2705         return(om_ok);
2706 }
2707
2708
2709 /*
2710  * display a message (mode 0 - Citadel proprietary)
2711  */
2712 void cmd_msg0(char *cmdbuf)
2713 {
2714         long msgid;
2715         int headers_only = HEADERS_ALL;
2716
2717         msgid = extract_long(cmdbuf, 0);
2718         headers_only = extract_int(cmdbuf, 1);
2719
2720         CtdlOutputMsg(msgid, MT_CITADEL, headers_only, 1, 0, NULL, 0, NULL, NULL);
2721         return;
2722 }
2723
2724
2725 /*
2726  * display a message (mode 2 - RFC822)
2727  */
2728 void cmd_msg2(char *cmdbuf)
2729 {
2730         long msgid;
2731         int headers_only = HEADERS_ALL;
2732
2733         msgid = extract_long(cmdbuf, 0);
2734         headers_only = extract_int(cmdbuf, 1);
2735
2736         CtdlOutputMsg(msgid, MT_RFC822, headers_only, 1, 1, NULL, 0, NULL, NULL);
2737 }
2738
2739
2740
2741 /*
2742  * display a message (mode 3 - IGnet raw format - internal programs only)
2743  */
2744 void cmd_msg3(char *cmdbuf)
2745 {
2746         long msgnum;
2747         struct CtdlMessage *msg = NULL;
2748         struct ser_ret smr;
2749
2750         if (CC->internal_pgm == 0) {
2751                 cprintf("%d This command is for internal programs only.\n",
2752                         ERROR + HIGHER_ACCESS_REQUIRED);
2753                 return;
2754         }
2755
2756         msgnum = extract_long(cmdbuf, 0);
2757         msg = CtdlFetchMessage(msgnum, 1);
2758         if (msg == NULL) {
2759                 cprintf("%d Message %ld not found.\n",
2760                         ERROR + MESSAGE_NOT_FOUND, msgnum);
2761                 return;
2762         }
2763
2764         serialize_message(&smr, msg);
2765         CM_Free(msg);
2766
2767         if (smr.len == 0) {
2768                 cprintf("%d Unable to serialize message\n",
2769                         ERROR + INTERNAL_ERROR);
2770                 return;
2771         }
2772
2773         cprintf("%d %ld\n", BINARY_FOLLOWS, (long)smr.len);
2774         client_write((char *)smr.ser, (int)smr.len);
2775         free(smr.ser);
2776 }
2777
2778
2779
2780 /*
2781  * Display a message using MIME content types
2782  */
2783 void cmd_msg4(char *cmdbuf)
2784 {
2785         long msgid;
2786         char section[64];
2787
2788         msgid = extract_long(cmdbuf, 0);
2789         extract_token(section, cmdbuf, 1, '|', sizeof section);
2790         CtdlOutputMsg(msgid, MT_MIME, 0, 1, 0, (section[0] ? section : NULL) , 0, NULL, NULL);
2791 }
2792
2793
2794
2795 /*
2796  * Client tells us its preferred message format(s)
2797  */
2798 void cmd_msgp(char *cmdbuf)
2799 {
2800         if (!strcasecmp(cmdbuf, "dont_decode")) {
2801                 CC->msg4_dont_decode = 1;
2802                 cprintf("%d MSG4 will not pre-decode messages.\n", CIT_OK);
2803         }
2804         else {
2805                 safestrncpy(CC->preferred_formats, cmdbuf, sizeof(CC->preferred_formats));
2806                 cprintf("%d Preferred MIME formats have been set.\n", CIT_OK);
2807         }
2808 }
2809
2810
2811 /*
2812  * Open a component of a MIME message as a download file
2813  */
2814 void cmd_opna(char *cmdbuf)
2815 {
2816         long msgid;
2817         char desired_section[128];
2818
2819         msgid = extract_long(cmdbuf, 0);
2820         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2821         safestrncpy(CC->download_desired_section, desired_section,
2822                 sizeof CC->download_desired_section);
2823         CtdlOutputMsg(msgid, MT_DOWNLOAD, 0, 1, 1, NULL, 0, NULL, NULL);
2824 }
2825
2826
2827 /*
2828  * Open a component of a MIME message and transmit it all at once
2829  */
2830 void cmd_dlat(char *cmdbuf)
2831 {
2832         long msgid;
2833         char desired_section[128];
2834
2835         msgid = extract_long(cmdbuf, 0);
2836         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2837         safestrncpy(CC->download_desired_section, desired_section,
2838                 sizeof CC->download_desired_section);
2839         CtdlOutputMsg(msgid, MT_SPEW_SECTION, 0, 1, 1, NULL, 0, NULL, NULL);
2840 }
2841
2842
2843 /*
2844  * Save one or more message pointers into a specified room
2845  * (Returns 0 for success, nonzero for failure)
2846  * roomname may be NULL to use the current room
2847  *
2848  * Note that the 'supplied_msg' field may be set to NULL, in which case
2849  * the message will be fetched from disk, by number, if we need to perform
2850  * replication checks.  This adds an additional database read, so if the
2851  * caller already has the message in memory then it should be supplied.  (Obviously
2852  * this mode of operation only works if we're saving a single message.)
2853  */
2854 int CtdlSaveMsgPointersInRoom(char *roomname, long newmsgidlist[], int num_newmsgs,
2855                         int do_repl_check, struct CtdlMessage *supplied_msg, int suppress_refcount_adj
2856 ) {
2857         struct CitContext *CCC = CC;
2858         int i, j, unique;
2859         char hold_rm[ROOMNAMELEN];
2860         struct cdbdata *cdbfr;
2861         int num_msgs;
2862         long *msglist;
2863         long highest_msg = 0L;
2864
2865         long msgid = 0;
2866         struct CtdlMessage *msg = NULL;
2867
2868         long *msgs_to_be_merged = NULL;
2869         int num_msgs_to_be_merged = 0;
2870
2871         MSG_syslog(LOG_DEBUG,
2872                    "CtdlSaveMsgPointersInRoom(room=%s, num_msgs=%d, repl=%d, suppress_rca=%d)\n",
2873                    roomname, num_newmsgs, do_repl_check, suppress_refcount_adj
2874         );
2875
2876         strcpy(hold_rm, CCC->room.QRname);
2877
2878         /* Sanity checks */
2879         if (newmsgidlist == NULL) return(ERROR + INTERNAL_ERROR);
2880         if (num_newmsgs < 1) return(ERROR + INTERNAL_ERROR);
2881         if (num_newmsgs > 1) supplied_msg = NULL;
2882
2883         /* Now the regular stuff */
2884         if (CtdlGetRoomLock(&CCC->room,
2885            ((roomname != NULL) ? roomname : CCC->room.QRname) )
2886            != 0) {
2887                 MSG_syslog(LOG_ERR, "No such room <%s>\n", roomname);
2888                 return(ERROR + ROOM_NOT_FOUND);
2889         }
2890
2891
2892         msgs_to_be_merged = malloc(sizeof(long) * num_newmsgs);
2893         num_msgs_to_be_merged = 0;
2894
2895
2896         cdbfr = cdb_fetch(CDB_MSGLISTS, &CCC->room.QRnumber, sizeof(long));
2897         if (cdbfr == NULL) {
2898                 msglist = NULL;
2899                 num_msgs = 0;
2900         } else {
2901                 msglist = (long *) cdbfr->ptr;
2902                 cdbfr->ptr = NULL;      /* CtdlSaveMsgPointerInRoom() now owns this memory */
2903                 num_msgs = cdbfr->len / sizeof(long);
2904                 cdb_free(cdbfr);
2905         }
2906
2907
2908         /* Create a list of msgid's which were supplied by the caller, but do
2909          * not already exist in the target room.  It is absolutely taboo to
2910          * have more than one reference to the same message in a room.
2911          */
2912         for (i=0; i<num_newmsgs; ++i) {
2913                 unique = 1;
2914                 if (num_msgs > 0) for (j=0; j<num_msgs; ++j) {
2915                         if (msglist[j] == newmsgidlist[i]) {
2916                                 unique = 0;
2917                         }
2918                 }
2919                 if (unique) {
2920                         msgs_to_be_merged[num_msgs_to_be_merged++] = newmsgidlist[i];
2921                 }
2922         }
2923
2924         MSG_syslog(LOG_DEBUG, "%d unique messages to be merged\n", num_msgs_to_be_merged);
2925
2926         /*
2927          * Now merge the new messages
2928          */
2929         msglist = realloc(msglist, (sizeof(long) * (num_msgs + num_msgs_to_be_merged)) );
2930         if (msglist == NULL) {
2931                 MSGM_syslog(LOG_ALERT, "ERROR: can't realloc message list!\n");
2932                 free(msgs_to_be_merged);
2933                 return (ERROR + INTERNAL_ERROR);
2934         }
2935         memcpy(&msglist[num_msgs], msgs_to_be_merged, (sizeof(long) * num_msgs_to_be_merged) );
2936         num_msgs += num_msgs_to_be_merged;
2937
2938         /* Sort the message list, so all the msgid's are in order */
2939         num_msgs = sort_msglist(msglist, num_msgs);
2940
2941         /* Determine the highest message number */
2942         highest_msg = msglist[num_msgs - 1];
2943
2944         /* Write it back to disk. */
2945         cdb_store(CDB_MSGLISTS, &CCC->room.QRnumber, (int)sizeof(long),
2946                   msglist, (int)(num_msgs * sizeof(long)));
2947
2948         /* Free up the memory we used. */
2949         free(msglist);
2950
2951         /* Update the highest-message pointer and unlock the room. */
2952         CCC->room.QRhighest = highest_msg;
2953         CtdlPutRoomLock(&CCC->room);
2954
2955         /* Perform replication checks if necessary */
2956         if ( (DoesThisRoomNeedEuidIndexing(&CCC->room)) && (do_repl_check) ) {
2957                 MSGM_syslog(LOG_DEBUG, "CtdlSaveMsgPointerInRoom() doing repl checks\n");
2958
2959                 for (i=0; i<num_msgs_to_be_merged; ++i) {
2960                         msgid = msgs_to_be_merged[i];
2961
2962                         if (supplied_msg != NULL) {
2963                                 msg = supplied_msg;
2964                         }
2965                         else {
2966                                 msg = CtdlFetchMessage(msgid, 0);
2967                         }
2968
2969                         if (msg != NULL) {
2970                                 ReplicationChecks(msg);
2971
2972                                 /* If the message has an Exclusive ID, index that... */
2973                                 if (!CM_IsEmpty(msg, eExclusiveID)) {
2974                                         index_message_by_euid(msg->cm_fields[eExclusiveID], &CCC->room, msgid);
2975                                 }
2976
2977                                 /* Free up the memory we may have allocated */
2978                                 if (msg != supplied_msg) {
2979                                         CM_Free(msg);
2980                                 }
2981                         }
2982
2983                 }
2984         }
2985
2986         else {
2987                 MSGM_syslog(LOG_DEBUG, "CtdlSaveMsgPointerInRoom() skips repl checks\n");
2988         }
2989
2990         /* Submit this room for processing by hooks */
2991         PerformRoomHooks(&CCC->room);
2992
2993         /* Go back to the room we were in before we wandered here... */
2994         CtdlGetRoom(&CCC->room, hold_rm);
2995
2996         /* Bump the reference count for all messages which were merged */
2997         if (!suppress_refcount_adj) {
2998                 AdjRefCountList(msgs_to_be_merged, num_msgs_to_be_merged, +1);
2999         }
3000
3001         /* Free up memory... */
3002         if (msgs_to_be_merged != NULL) {
3003                 free(msgs_to_be_merged);
3004         }
3005
3006         /* Return success. */
3007         return (0);
3008 }
3009
3010
3011 /*
3012  * This is the same as CtdlSaveMsgPointersInRoom() but it only accepts
3013  * a single message.
3014  */
3015 int CtdlSaveMsgPointerInRoom(char *roomname, long msgid,
3016                              int do_repl_check, struct CtdlMessage *supplied_msg)
3017 {
3018         return CtdlSaveMsgPointersInRoom(roomname, &msgid, 1, do_repl_check, supplied_msg, 0);
3019 }
3020
3021
3022
3023
3024 /*
3025  * Message base operation to save a new message to the message store
3026  * (returns new message number)
3027  *
3028  * This is the back end for CtdlSubmitMsg() and should not be directly
3029  * called by server-side modules.
3030  *
3031  */
3032 long send_message(struct CtdlMessage *msg) {
3033         struct CitContext *CCC = CC;
3034         long newmsgid;
3035         long retval;
3036         char msgidbuf[256];
3037         long msgidbuflen;
3038         struct ser_ret smr;
3039         int is_bigmsg = 0;
3040         char *holdM = NULL;
3041
3042         /* Get a new message number */
3043         newmsgid = get_new_message_number();
3044         msgidbuflen = snprintf(msgidbuf, sizeof msgidbuf, "%08lX-%08lX@%s",
3045                                (long unsigned int) time(NULL),
3046                                (long unsigned int) newmsgid,
3047                                config.c_fqdn
3048                 );
3049
3050         /* Generate an ID if we don't have one already */
3051         if (CM_IsEmpty(msg, emessageId)) {
3052                 CM_SetField(msg, emessageId, msgidbuf, msgidbuflen);
3053         }
3054
3055         /* If the message is big, set its body aside for storage elsewhere */
3056         if (!CM_IsEmpty(msg, eMesageText)) {
3057                 if (strlen(msg->cm_fields[eMesageText]) > BIGMSG) {
3058                         is_bigmsg = 1;
3059                         holdM = msg->cm_fields[eMesageText];
3060                         msg->cm_fields[eMesageText] = NULL;
3061                 }
3062         }
3063
3064         /* Serialize our data structure for storage in the database */
3065         serialize_message(&smr, msg);
3066
3067         if (is_bigmsg) {
3068                 msg->cm_fields[eMesageText] = holdM;
3069         }
3070
3071         if (smr.len == 0) {
3072                 cprintf("%d Unable to serialize message\n",
3073                         ERROR + INTERNAL_ERROR);
3074                 return (-1L);
3075         }
3076
3077         /* Write our little bundle of joy into the message base */
3078         if (cdb_store(CDB_MSGMAIN, &newmsgid, (int)sizeof(long),
3079                       smr.ser, smr.len) < 0) {
3080                 MSGM_syslog(LOG_ERR, "Can't store message\n");
3081                 retval = 0L;
3082         } else {
3083                 if (is_bigmsg) {
3084                         cdb_store(CDB_BIGMSGS,
3085                                   &newmsgid,
3086                                   (int)sizeof(long),
3087                                   holdM,
3088                                   (strlen(holdM) + 1)
3089                                 );
3090                 }
3091                 retval = newmsgid;
3092         }
3093
3094         /* Free the memory we used for the serialized message */
3095         free(smr.ser);
3096
3097         /* Return the *local* message ID to the caller
3098          * (even if we're storing an incoming network message)
3099          */
3100         return(retval);
3101 }
3102
3103
3104
3105 /*
3106  * Serialize a struct CtdlMessage into the format used on disk and network.
3107  *
3108  * This function loads up a "struct ser_ret" (defined in server.h) which
3109  * contains the length of the serialized message and a pointer to the
3110  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
3111  */
3112 void serialize_message(struct ser_ret *ret,             /* return values */
3113                        struct CtdlMessage *msg) /* unserialized msg */
3114 {
3115         struct CitContext *CCC = CC;
3116         size_t wlen, fieldlen;
3117         int i;
3118         long lengths[NDiskFields];
3119
3120         memset(lengths, 0, sizeof(lengths));
3121
3122         /*
3123          * Check for valid message format
3124          */
3125         if (CM_IsValidMsg(msg) == 0) {
3126                 MSGM_syslog(LOG_ERR, "serialize_message() aborting due to invalid message\n");
3127                 ret->len = 0;
3128                 ret->ser = NULL;
3129                 return;
3130         }
3131
3132         ret->len = 3;
3133         for (i=0; i < NDiskFields; ++i)
3134                 if (msg->cm_fields[FieldOrder[i]] != NULL)
3135                 {
3136                         lengths[i] = strlen(msg->cm_fields[FieldOrder[i]]);
3137                         ret->len += lengths[i] + 2;
3138                 }
3139
3140         ret->ser = malloc(ret->len);
3141         if (ret->ser == NULL) {
3142                 MSG_syslog(LOG_ERR, "serialize_message() malloc(%ld) failed: %s\n",
3143                            (long)ret->len, strerror(errno));
3144                 ret->len = 0;
3145                 ret->ser = NULL;
3146                 return;
3147         }
3148
3149         ret->ser[0] = 0xFF;
3150         ret->ser[1] = msg->cm_anon_type;
3151         ret->ser[2] = msg->cm_format_type;
3152         wlen = 3;
3153
3154         for (i=0; i < NDiskFields; ++i)
3155                 if (msg->cm_fields[FieldOrder[i]] != NULL)
3156                 {
3157                         fieldlen = lengths[i];
3158                         ret->ser[wlen++] = (char)FieldOrder[i];
3159
3160                         memcpy(&ret->ser[wlen],
3161                                msg->cm_fields[FieldOrder[i]],
3162                                fieldlen+1);
3163
3164                         wlen = wlen + fieldlen + 1;
3165                 }
3166
3167         if (ret->len != wlen) {
3168                 MSG_syslog(LOG_ERR, "ERROR: len=%ld wlen=%ld\n",
3169                            (long)ret->len, (long)wlen);
3170         }
3171
3172         return;
3173 }
3174
3175
3176 /*
3177  * Check to see if any messages already exist in the current room which
3178  * carry the same Exclusive ID as this one.  If any are found, delete them.
3179  */
3180 void ReplicationChecks(struct CtdlMessage *msg) {
3181         struct CitContext *CCC = CC;
3182         long old_msgnum = (-1L);
3183
3184         if (DoesThisRoomNeedEuidIndexing(&CCC->room) == 0) return;
3185
3186         MSG_syslog(LOG_DEBUG, "Performing replication checks in <%s>\n",
3187                    CCC->room.QRname);
3188
3189         /* No exclusive id?  Don't do anything. */
3190         if (msg == NULL) return;
3191         if (CM_IsEmpty(msg, eExclusiveID)) return;
3192
3193         /*MSG_syslog(LOG_DEBUG, "Exclusive ID: <%s> for room <%s>\n",
3194           msg->cm_fields[eExclusiveID], CCC->room.QRname);*/
3195
3196         old_msgnum = CtdlLocateMessageByEuid(msg->cm_fields[eExclusiveID], &CCC->room);
3197         if (old_msgnum > 0L) {
3198                 MSG_syslog(LOG_DEBUG, "ReplicationChecks() replacing message %ld\n", old_msgnum);
3199                 CtdlDeleteMessages(CCC->room.QRname, &old_msgnum, 1, "");
3200         }
3201 }
3202
3203
3204
3205 /*
3206  * Save a message to disk and submit it into the delivery system.
3207  */
3208 long CtdlSubmitMsg(struct CtdlMessage *msg,     /* message to save */
3209                    struct recptypes *recps,     /* recipients (if mail) */
3210                    const char *force,           /* force a particular room? */
3211                    int flags                    /* should the message be exported clean? */
3212         )
3213 {
3214         char submit_filename[128];
3215         char hold_rm[ROOMNAMELEN];
3216         char actual_rm[ROOMNAMELEN];
3217         char force_room[ROOMNAMELEN];
3218         char content_type[SIZ];                 /* We have to learn this */
3219         char recipient[SIZ];
3220         const char *room;
3221         long newmsgid;
3222         const char *mptr = NULL;
3223         struct ctdluser userbuf;
3224         int a, i;
3225         struct MetaData smi;
3226         FILE *network_fp = NULL;
3227         static int seqnum = 1;
3228         struct CtdlMessage *imsg = NULL;
3229         char *instr = NULL;
3230         size_t instr_alloc = 0;
3231         struct ser_ret smr;
3232         char *hold_R, *hold_D;
3233         char *collected_addresses = NULL;
3234         struct addresses_to_be_filed *aptr = NULL;
3235         StrBuf *saved_rfc822_version = NULL;
3236         int qualified_for_journaling = 0;
3237         CitContext *CCC = MyContext();
3238         char bounce_to[1024] = "";
3239         int rv = 0;
3240
3241         MSGM_syslog(LOG_DEBUG, "CtdlSubmitMsg() called\n");
3242         if (CM_IsValidMsg(msg) == 0) return(-1);        /* self check */
3243
3244         /* If this message has no timestamp, we take the liberty of
3245          * giving it one, right now.
3246          */
3247         if (CM_IsEmpty(msg, eTimestamp)) {
3248                 CM_SetFieldLONG(msg, eTimestamp, time(NULL));
3249         }
3250
3251         /* If this message has no path, we generate one.
3252          */
3253         if (CM_IsEmpty(msg, eMessagePath)) {
3254                 if (!CM_IsEmpty(msg, eAuthor)) {
3255                         CM_CopyField(msg, eMessagePath, eAuthor);
3256                         for (a=0; !IsEmptyStr(&msg->cm_fields[eMessagePath][a]); ++a) {
3257                                 if (isspace(msg->cm_fields[eMessagePath][a])) {
3258                                         msg->cm_fields[eMessagePath][a] = ' ';
3259                                 }
3260                         }
3261                 }
3262                 else {
3263                         CM_SetField(msg, eMessagePath, HKEY("unknown"));
3264                 }
3265         }
3266
3267         if (force == NULL) {
3268                 force_room[0] = '\0';
3269         }
3270         else {
3271                 strcpy(force_room, force);
3272         }
3273
3274         /* Learn about what's inside, because it's what's inside that counts */
3275         if (CM_IsEmpty(msg, eMesageText)) {
3276                 MSGM_syslog(LOG_ERR, "ERROR: attempt to save message with NULL body\n");
3277                 return(-2);
3278         }
3279
3280         switch (msg->cm_format_type) {
3281         case 0:
3282                 strcpy(content_type, "text/x-citadel-variformat");
3283                 break;
3284         case 1:
3285                 strcpy(content_type, "text/plain");
3286                 break;
3287         case 4:
3288                 strcpy(content_type, "text/plain");
3289                 mptr = bmstrcasestr(msg->cm_fields[eMesageText], "Content-type:");
3290                 if (mptr != NULL) {
3291                         char *aptr;
3292                         safestrncpy(content_type, &mptr[13], sizeof content_type);
3293                         striplt(content_type);
3294                         aptr = content_type;
3295                         while (!IsEmptyStr(aptr)) {
3296                                 if ((*aptr == ';')
3297                                     || (*aptr == ' ')
3298                                     || (*aptr == 13)
3299                                     || (*aptr == 10)) {
3300                                         *aptr = 0;
3301                                 }
3302                                 else aptr++;
3303                         }
3304                 }
3305         }
3306
3307         /* Goto the correct room */
3308         room = (recps) ? CCC->room.QRname : SENTITEMS;
3309         MSG_syslog(LOG_DEBUG, "Selected room %s\n", room);
3310         strcpy(hold_rm, CCC->room.QRname);
3311         strcpy(actual_rm, CCC->room.QRname);
3312         if (recps != NULL) {
3313                 strcpy(actual_rm, SENTITEMS);
3314         }
3315
3316         /* If the user is a twit, move to the twit room for posting */
3317         if (TWITDETECT) {
3318                 if (CCC->user.axlevel == AxProbU) {
3319                         strcpy(hold_rm, actual_rm);
3320                         strcpy(actual_rm, config.c_twitroom);
3321                         MSGM_syslog(LOG_DEBUG, "Diverting to twit room\n");
3322                 }
3323         }
3324
3325         /* ...or if this message is destined for Aide> then go there. */
3326         if (!IsEmptyStr(force_room)) {
3327                 strcpy(actual_rm, force_room);
3328         }
3329
3330         MSG_syslog(LOG_INFO, "Final selection: %s (%s)\n", actual_rm, room);
3331         if (strcasecmp(actual_rm, CCC->room.QRname)) {
3332                 /* CtdlGetRoom(&CCC->room, actual_rm); */
3333                 CtdlUserGoto(actual_rm, 0, 1, NULL, NULL);
3334         }
3335
3336         /*
3337          * If this message has no O (room) field, generate one.
3338          */
3339         if (CM_IsEmpty(msg, eOriginalRoom)) {
3340                 CM_SetField(msg, eOriginalRoom, CCC->room.QRname, strlen(CCC->room.QRname));
3341         }
3342
3343         /* Perform "before save" hooks (aborting if any return nonzero) */
3344         MSGM_syslog(LOG_DEBUG, "Performing before-save hooks\n");
3345         if (PerformMessageHooks(msg, EVT_BEFORESAVE) > 0) return(-3);
3346
3347         /*
3348          * If this message has an Exclusive ID, and the room is replication
3349          * checking enabled, then do replication checks.
3350          */
3351         if (DoesThisRoomNeedEuidIndexing(&CCC->room)) {
3352                 ReplicationChecks(msg);
3353         }
3354
3355         /* Save it to disk */
3356         MSGM_syslog(LOG_DEBUG, "Saving to disk\n");
3357         newmsgid = send_message(msg);
3358         if (newmsgid <= 0L) return(-5);
3359
3360         /* Write a supplemental message info record.  This doesn't have to
3361          * be a critical section because nobody else knows about this message
3362          * yet.
3363          */
3364         MSGM_syslog(LOG_DEBUG, "Creating MetaData record\n");
3365         memset(&smi, 0, sizeof(struct MetaData));
3366         smi.meta_msgnum = newmsgid;
3367         smi.meta_refcount = 0;
3368         safestrncpy(smi.meta_content_type, content_type,
3369                     sizeof smi.meta_content_type);
3370
3371         /*
3372          * Measure how big this message will be when rendered as RFC822.
3373          * We do this for two reasons:
3374          * 1. We need the RFC822 length for the new metadata record, so the
3375          *    POP and IMAP services don't have to calculate message lengths
3376          *    while the user is waiting (multiplied by potentially hundreds
3377          *    or thousands of messages).
3378          * 2. If journaling is enabled, we will need an RFC822 version of the
3379          *    message to attach to the journalized copy.
3380          */
3381         if (CCC->redirect_buffer != NULL) {
3382                 MSGM_syslog(LOG_ALERT, "CCC->redirect_buffer is not NULL during message submission!\n");
3383                 abort();
3384         }
3385         CCC->redirect_buffer = NewStrBufPlain(NULL, SIZ);
3386         CtdlOutputPreLoadedMsg(msg, MT_RFC822, HEADERS_ALL, 0, 1, QP_EADDR);
3387         smi.meta_rfc822_length = StrLength(CCC->redirect_buffer);
3388         saved_rfc822_version = CCC->redirect_buffer;
3389         CCC->redirect_buffer = NULL;
3390
3391         PutMetaData(&smi);
3392
3393         /* Now figure out where to store the pointers */
3394         MSGM_syslog(LOG_DEBUG, "Storing pointers\n");
3395
3396         /* If this is being done by the networker delivering a private
3397          * message, we want to BYPASS saving the sender's copy (because there
3398          * is no local sender; it would otherwise go to the Trashcan).
3399          */
3400         if ((!CCC->internal_pgm) || (recps == NULL)) {
3401                 if (CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 1, msg) != 0) {
3402                         MSGM_syslog(LOG_ERR, "ERROR saving message pointer!\n");
3403                         CtdlSaveMsgPointerInRoom(config.c_aideroom, newmsgid, 0, msg);
3404                 }
3405         }
3406
3407         /* For internet mail, drop a copy in the outbound queue room */
3408         if ((recps != NULL) && (recps->num_internet > 0)) {
3409                 CtdlSaveMsgPointerInRoom(SMTP_SPOOLOUT_ROOM, newmsgid, 0, msg);
3410         }
3411
3412         /* If other rooms are specified, drop them there too. */
3413         if ((recps != NULL) && (recps->num_room > 0))
3414                 for (i=0; i<num_tokens(recps->recp_room, '|'); ++i) {
3415                         extract_token(recipient, recps->recp_room, i,
3416                                       '|', sizeof recipient);
3417                         MSG_syslog(LOG_DEBUG, "Delivering to room <%s>\n", recipient);///// xxxx
3418                         CtdlSaveMsgPointerInRoom(recipient, newmsgid, 0, msg);
3419                 }
3420
3421         /* Bump this user's messages posted counter. */
3422         MSGM_syslog(LOG_DEBUG, "Updating user\n");
3423         CtdlGetUserLock(&CCC->user, CCC->curr_user);
3424         CCC->user.posted = CCC->user.posted + 1;
3425         CtdlPutUserLock(&CCC->user);
3426
3427         /* Decide where bounces need to be delivered */
3428         if ((recps != NULL) && (recps->bounce_to != NULL)) {
3429                 safestrncpy(bounce_to, recps->bounce_to, sizeof bounce_to);
3430         }
3431         else if (CCC->logged_in) {
3432                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", CCC->user.fullname, config.c_nodename);
3433         }
3434         else {
3435                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", msg->cm_fields[eAuthor], msg->cm_fields[eNodeName]);
3436         }
3437
3438         /* If this is private, local mail, make a copy in the
3439          * recipient's mailbox and bump the reference count.
3440          */
3441         if ((recps != NULL) && (recps->num_local > 0))
3442                 for (i=0; i<num_tokens(recps->recp_local, '|'); ++i) {
3443                         long recipientlen;
3444                         recipientlen = extract_token(recipient,
3445                                                      recps->recp_local, i,
3446                                                      '|', sizeof recipient);
3447                         MSG_syslog(LOG_DEBUG, "Delivering private local mail to <%s>\n",
3448                                recipient);
3449                         if (CtdlGetUser(&userbuf, recipient) == 0) {
3450                                 CtdlMailboxName(actual_rm, sizeof actual_rm, &userbuf, MAILROOM);
3451                                 CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 0, msg);
3452                                 CtdlBumpNewMailCounter(userbuf.usernum);
3453                                 if (!IsEmptyStr(config.c_funambol_host) || !IsEmptyStr(config.c_pager_program)) {
3454                                         /* Generate a instruction message for the Funambol notification
3455                                          * server, in the same style as the SMTP queue
3456                                          */
3457                                         long instrlen;
3458                                         instr_alloc = 1024;
3459                                         instr = malloc(instr_alloc);
3460                                         instrlen = snprintf(
3461                                                 instr, instr_alloc,
3462                                                 "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
3463                                                 "bounceto|%s\n",
3464                                                 SPOOLMIME,
3465                                                 newmsgid,
3466                                                 (long)time(NULL), //todo: time() is expensive!
3467                                                 bounce_to
3468                                                 );
3469
3470                                         imsg = malloc(sizeof(struct CtdlMessage));
3471                                         memset(imsg, 0, sizeof(struct CtdlMessage));
3472                                         imsg->cm_magic = CTDLMESSAGE_MAGIC;
3473                                         imsg->cm_anon_type = MES_NORMAL;
3474                                         imsg->cm_format_type = FMT_RFC822;
3475                                         CM_SetField(imsg, eMsgSubject, HKEY("QMSG"));
3476                                         CM_SetField(imsg, eAuthor, HKEY("Citadel"));
3477                                         CM_SetField(imsg, eJournal, HKEY("do not journal"));
3478                                         CM_SetAsField(imsg, eMesageText, &instr, instrlen);
3479                                         CM_SetField(imsg, eExtnotify, recipient, recipientlen);
3480                                         CtdlSubmitMsg(imsg, NULL, FNBL_QUEUE_ROOM, 0);
3481                                         CM_Free(imsg);
3482                                 }
3483                         }
3484                         else {
3485                                 MSG_syslog(LOG_DEBUG, "No user <%s>\n", recipient);
3486                                 CtdlSaveMsgPointerInRoom(config.c_aideroom, newmsgid, 0, msg);
3487                         }
3488                 }
3489
3490         /* Perform "after save" hooks */
3491         MSGM_syslog(LOG_DEBUG, "Performing after-save hooks\n");
3492
3493         CM_SetFieldLONG(msg, eVltMsgNum, newmsgid);
3494         PerformMessageHooks(msg, EVT_AFTERSAVE);
3495         CM_FlushField(msg, eVltMsgNum);
3496
3497         /* For IGnet mail, we have to save a new copy into the spooler for
3498          * each recipient, with the R and D fields set to the recipient and
3499          * destination-node.  This has two ugly side effects: all other
3500          * recipients end up being unlisted in this recipient's copy of the
3501          * message, and it has to deliver multiple messages to the same
3502          * node.  We'll revisit this again in a year or so when everyone has
3503          * a network spool receiver that can handle the new style messages.
3504          */
3505         if ((recps != NULL) && (recps->num_ignet > 0))
3506                 for (i=0; i<num_tokens(recps->recp_ignet, '|'); ++i) {
3507                         extract_token(recipient, recps->recp_ignet, i,
3508                                       '|', sizeof recipient);
3509
3510                         hold_R = msg->cm_fields[eRecipient];
3511                         hold_D = msg->cm_fields[eDestination];
3512                         msg->cm_fields[eRecipient] = malloc(SIZ);
3513                         msg->cm_fields[eDestination] = malloc(128);
3514                         extract_token(msg->cm_fields[eRecipient], recipient, 0, '@', SIZ);
3515                         extract_token(msg->cm_fields[eDestination], recipient, 1, '@', 128);
3516
3517                         serialize_message(&smr, msg);
3518                         if (smr.len > 0) {
3519                                 snprintf(submit_filename, sizeof submit_filename,
3520                                          "%s/netmail.%04lx.%04x.%04x",
3521                                          ctdl_netin_dir,
3522                                          (long) getpid(), CCC->cs_pid, ++seqnum);
3523                                 network_fp = fopen(submit_filename, "wb+");
3524                                 if (network_fp != NULL) {
3525                                         rv = fwrite(smr.ser, smr.len, 1, network_fp);
3526                                         if (rv == -1) {
3527                                                 MSG_syslog(LOG_EMERG, "CtdlSubmitMsg(): Couldn't write network spool file: %s\n",
3528                                                            strerror(errno));
3529                                         }
3530                                         fclose(network_fp);
3531                                 }
3532                                 free(smr.ser);
3533                         }
3534
3535                         free(msg->cm_fields[eRecipient]);
3536                         free(msg->cm_fields[eDestination]);
3537                         msg->cm_fields[eRecipient] = hold_R;
3538                         msg->cm_fields[eDestination] = hold_D;
3539                 }
3540
3541         /* Go back to the room we started from */
3542         MSG_syslog(LOG_DEBUG, "Returning to original room %s\n", hold_rm);
3543         if (strcasecmp(hold_rm, CCC->room.QRname))
3544                 CtdlUserGoto(hold_rm, 0, 1, NULL, NULL);
3545
3546         /* For internet mail, generate delivery instructions.
3547          * Yes, this is recursive.  Deal with it.  Infinite recursion does
3548          * not happen because the delivery instructions message does not
3549          * contain a recipient.
3550          */
3551         if ((recps != NULL) && (recps->num_internet > 0)) {
3552                 StrBuf *SpoolMsg = NewStrBuf();
3553                 long nTokens;
3554
3555                 MSGM_syslog(LOG_DEBUG, "Generating delivery instructions\n");
3556
3557                 StrBufPrintf(SpoolMsg,
3558                              "Content-type: "SPOOLMIME"\n"
3559                              "\n"
3560                              "msgid|%ld\n"
3561                              "submitted|%ld\n"
3562                              "bounceto|%s\n",
3563                              newmsgid,
3564                              (long)time(NULL),
3565                              bounce_to);
3566
3567                 if (recps->envelope_from != NULL) {
3568                         StrBufAppendBufPlain(SpoolMsg, HKEY("envelope_from|"), 0);
3569                         StrBufAppendBufPlain(SpoolMsg, recps->envelope_from, -1, 0);
3570                         StrBufAppendBufPlain(SpoolMsg, HKEY("\n"), 0);
3571                 }
3572                 if (recps->sending_room != NULL) {
3573                         StrBufAppendBufPlain(SpoolMsg, HKEY("source_room|"), 0);
3574                         StrBufAppendBufPlain(SpoolMsg, recps->sending_room, -1, 0);
3575                         StrBufAppendBufPlain(SpoolMsg, HKEY("\n"), 0);
3576                 }
3577
3578                 nTokens = num_tokens(recps->recp_internet, '|');
3579                 for (i = 0; i < nTokens; i++) {
3580                         long len;
3581                         len = extract_token(recipient, recps->recp_internet, i, '|', sizeof recipient);
3582                         if (len > 0) {
3583                                 StrBufAppendBufPlain(SpoolMsg, HKEY("remote|"), 0);
3584                                 StrBufAppendBufPlain(SpoolMsg, recipient, len, 0);
3585                                 StrBufAppendBufPlain(SpoolMsg, HKEY("|0||\n"), 0);
3586                         }
3587                 }
3588
3589                 imsg = malloc(sizeof(struct CtdlMessage));
3590                 memset(imsg, 0, sizeof(struct CtdlMessage));
3591                 imsg->cm_magic = CTDLMESSAGE_MAGIC;
3592                 imsg->cm_anon_type = MES_NORMAL;
3593                 imsg->cm_format_type = FMT_RFC822;
3594                 imsg->cm_fields[eMsgSubject] = strdup("QMSG");
3595                 imsg->cm_fields[eAuthor] = strdup("Citadel");
3596                 imsg->cm_fields[eJournal] = strdup("do not journal");
3597                 imsg->cm_fields[eMesageText] = SmashStrBuf(&SpoolMsg);  /* imsg owns this memory now */
3598                 CtdlSubmitMsg(imsg, NULL, SMTP_SPOOLOUT_ROOM, QP_EADDR);
3599                 CM_Free(imsg);
3600         }
3601
3602         /*
3603          * Any addresses to harvest for someone's address book?
3604          */
3605         if ( (CCC->logged_in) && (recps != NULL) ) {
3606                 collected_addresses = harvest_collected_addresses(msg);
3607         }
3608
3609         if (collected_addresses != NULL) {
3610                 aptr = (struct addresses_to_be_filed *)
3611                         malloc(sizeof(struct addresses_to_be_filed));
3612                 CtdlMailboxName(actual_rm, sizeof actual_rm,
3613                                 &CCC->user, USERCONTACTSROOM);
3614                 aptr->roomname = strdup(actual_rm);
3615                 aptr->collected_addresses = collected_addresses;
3616                 begin_critical_section(S_ATBF);
3617                 aptr->next = atbf;
3618                 atbf = aptr;
3619                 end_critical_section(S_ATBF);
3620         }
3621
3622         /*
3623          * Determine whether this message qualifies for journaling.
3624          */
3625         if (!CM_IsEmpty(msg, eJournal)) {
3626                 qualified_for_journaling = 0;
3627         }
3628         else {
3629                 if (recps == NULL) {
3630                         qualified_for_journaling = config.c_journal_pubmsgs;
3631                 }
3632                 else if (recps->num_local + recps->num_ignet + recps->num_internet > 0) {
3633                         qualified_for_journaling = config.c_journal_email;
3634                 }
3635                 else {
3636                         qualified_for_journaling = config.c_journal_pubmsgs;
3637                 }
3638         }
3639
3640         /*
3641          * Do we have to perform journaling?  If so, hand off the saved
3642          * RFC822 version will be handed off to the journaler for background
3643          * submit.  Otherwise, we have to free the memory ourselves.
3644          */
3645         if (saved_rfc822_version != NULL) {
3646                 if (qualified_for_journaling) {
3647                         JournalBackgroundSubmit(msg, saved_rfc822_version, recps);
3648                 }
3649                 else {
3650                         FreeStrBuf(&saved_rfc822_version);
3651                 }
3652         }
3653
3654         /* Done. */
3655         return(newmsgid);
3656 }
3657
3658
3659 /*
3660  * Convenience function for generating small administrative messages.
3661  */
3662 void quickie_message(const char *from,
3663                      const char *fromaddr,
3664                      const char *to,
3665                      char *room,
3666                      const char *text,
3667                      int format_type,
3668                      const char *subject)
3669 {
3670         struct CtdlMessage *msg;
3671         struct recptypes *recp = NULL;
3672
3673         msg = malloc(sizeof(struct CtdlMessage));
3674         memset(msg, 0, sizeof(struct CtdlMessage));
3675         msg->cm_magic = CTDLMESSAGE_MAGIC;
3676         msg->cm_anon_type = MES_NORMAL;
3677         msg->cm_format_type = format_type;
3678
3679         if (from != NULL) {
3680                 msg->cm_fields[eAuthor] = strdup(from);
3681         }
3682         else if (fromaddr != NULL) {
3683                 msg->cm_fields[eAuthor] = strdup(fromaddr);
3684                 if (strchr(msg->cm_fields[eAuthor], '@')) {
3685                         *strchr(msg->cm_fields[eAuthor], '@') = 0;
3686                 }
3687         }
3688         else {
3689                 msg->cm_fields[eAuthor] = strdup("Citadel");
3690         }
3691
3692         if (fromaddr != NULL) msg->cm_fields[erFc822Addr] = strdup(fromaddr);
3693         if (room != NULL) msg->cm_fields[eOriginalRoom] = strdup(room);
3694         msg->cm_fields[eNodeName] = strdup(NODENAME);
3695         if (to != NULL) {
3696                 msg->cm_fields[eRecipient] = strdup(to);
3697                 recp = validate_recipients(to, NULL, 0);
3698         }
3699         if (subject != NULL) {
3700                 msg->cm_fields[eMsgSubject] = strdup(subject);
3701         }
3702         msg->cm_fields[eMesageText] = strdup(text);
3703
3704         CtdlSubmitMsg(msg, recp, room, 0);
3705         CM_Free(msg);
3706         if (recp != NULL) free_recipients(recp);
3707 }
3708
3709 void flood_protect_quickie_message(const char *from,
3710                                    const char *fromaddr,
3711                                    const char *to,
3712                                    char *room,
3713                                    const char *text,
3714                                    int format_type,
3715                                    const char *subject,
3716                                    int nCriterions,
3717                                    const char **CritStr,
3718                                    long *CritStrLen,
3719                                    long ccid,
3720                                    long ioid,
3721                                    time_t NOW)
3722 {
3723         int i;
3724         u_char rawdigest[MD5_DIGEST_LEN];
3725         struct MD5Context md5context;
3726         StrBuf *guid;
3727         char timestamp[64];
3728         long tslen;
3729         time_t tsday = NOW / (8*60*60); /* just care for a day... */
3730
3731         tslen = snprintf(timestamp, sizeof(timestamp), "%ld", tsday);
3732         MD5Init(&md5context);
3733
3734         for (i = 0; i < nCriterions; i++)
3735                 MD5Update(&md5context,
3736                           (const unsigned char*)CritStr[i], CritStrLen[i]);
3737         MD5Update(&md5context,
3738                   (const unsigned char*)timestamp, tslen);
3739         MD5Final(rawdigest, &md5context);
3740
3741         guid = NewStrBufPlain(NULL,
3742                               MD5_DIGEST_LEN * 2 + 12);
3743         StrBufHexEscAppend(guid, NULL, rawdigest, MD5_DIGEST_LEN);
3744         StrBufAppendBufPlain(guid, HKEY("_fldpt"), 0);
3745         if (StrLength(guid) > 40)
3746                 StrBufCutAt(guid, 40, NULL);
3747
3748         if (CheckIfAlreadySeen("FPAideMessage",
3749                                guid,
3750                                NOW,
3751                                tsday,
3752                                eUpdate,
3753                                ccid,
3754                                ioid)!= 0)
3755         {
3756                 FreeStrBuf(&guid);
3757                 /* yes, we did. flood protection kicks in. */
3758                 syslog(LOG_DEBUG,
3759                        "not sending message again\n");
3760                 return;
3761         }
3762         FreeStrBuf(&guid);
3763         /* no, this message isn't sent recently; go ahead. */
3764         quickie_message(from,
3765                         fromaddr,
3766                         to,
3767                         room,
3768                         text,
3769                         format_type,
3770                         subject);
3771 }
3772
3773
3774 /*
3775  * Back end function used by CtdlMakeMessage() and similar functions
3776  */
3777 StrBuf *CtdlReadMessageBodyBuf(char *terminator,        /* token signalling EOT */
3778                                long tlen,
3779                                size_t maxlen,           /* maximum message length */
3780                                StrBuf *exist,           /* if non-null, append to it;
3781                                                            exist is ALWAYS freed  */
3782                                int crlf,                /* CRLF newlines instead of LF */
3783                                int *sock                /* socket handle or 0 for this session's client socket */
3784         )
3785 {
3786         StrBuf *Message;
3787         StrBuf *LineBuf;
3788         int flushing = 0;
3789         int finished = 0;
3790         int dotdot = 0;
3791
3792         LineBuf = NewStrBufPlain(NULL, SIZ);
3793         if (exist == NULL) {
3794                 Message = NewStrBufPlain(NULL, 4 * SIZ);
3795         }
3796         else {
3797                 Message = NewStrBufDup(exist);
3798         }
3799
3800         /* Do we need to change leading ".." to "." for SMTP escaping? */
3801         if ((tlen == 1) && (*terminator == '.')) {
3802                 dotdot = 1;
3803         }
3804
3805         /* read in the lines of message text one by one */
3806         do {
3807                 if (sock != NULL) {
3808                         if ((CtdlSockGetLine(sock, LineBuf, 5) < 0) ||
3809                             (*sock == -1))
3810                                 finished = 1;
3811                 }
3812                 else {
3813                         if (CtdlClientGetLine(LineBuf) < 0) finished = 1;
3814                 }
3815                 if ((StrLength(LineBuf) == tlen) &&
3816                     (!strcmp(ChrPtr(LineBuf), terminator)))
3817                         finished = 1;
3818
3819                 if ( (!flushing) && (!finished) ) {
3820                         if (crlf) {
3821                                 StrBufAppendBufPlain(LineBuf, HKEY("\r\n"), 0);
3822                         }
3823                         else {
3824                                 StrBufAppendBufPlain(LineBuf, HKEY("\n"), 0);
3825                         }
3826
3827                         /* Unescape SMTP-style input of two dots at the beginning of the line */
3828                         if ((dotdot) &&
3829                             (StrLength(LineBuf) == 2) &&
3830                             (!strcmp(ChrPtr(LineBuf), "..")))
3831                         {
3832                                 StrBufCutLeft(LineBuf, 1);
3833                         }
3834
3835                         StrBufAppendBuf(Message, LineBuf, 0);
3836                 }
3837
3838                 /* if we've hit the max msg length, flush the rest */
3839                 if (StrLength(Message) >= maxlen) flushing = 1;
3840
3841         } while (!finished);
3842         FreeStrBuf(&LineBuf);
3843         return Message;
3844 }
3845
3846 void DeleteAsyncMsg(ReadAsyncMsg **Msg)
3847 {
3848         if (*Msg == NULL)
3849                 return;
3850         FreeStrBuf(&(*Msg)->MsgBuf);
3851
3852         free(*Msg);
3853         *Msg = NULL;
3854 }
3855
3856 ReadAsyncMsg *NewAsyncMsg(const char *terminator,       /* token signalling EOT */
3857                           long tlen,
3858                           size_t maxlen,                /* maximum message length */
3859                           size_t expectlen,             /* if we expect a message, how long should it be? */
3860                           StrBuf *exist,                /* if non-null, append to it;
3861                                                            exist is ALWAYS freed  */
3862                           long eLen,                    /* length of exist */
3863                           int crlf                      /* CRLF newlines instead of LF */
3864         )
3865 {
3866         ReadAsyncMsg *NewMsg;
3867
3868         NewMsg = (ReadAsyncMsg *)malloc(sizeof(ReadAsyncMsg));
3869         memset(NewMsg, 0, sizeof(ReadAsyncMsg));
3870
3871         if (exist == NULL) {
3872                 long len;
3873
3874                 if (expectlen == 0) {
3875                         len = 4 * SIZ;
3876                 }
3877                 else {
3878                         len = expectlen + 10;
3879                 }
3880                 NewMsg->MsgBuf = NewStrBufPlain(NULL, len);
3881         }
3882         else {
3883                 NewMsg->MsgBuf = NewStrBufDup(exist);
3884         }
3885         /* Do we need to change leading ".." to "." for SMTP escaping? */
3886         if ((tlen == 1) && (*terminator == '.')) {
3887                 NewMsg->dodot = 1;
3888         }
3889
3890         NewMsg->terminator = terminator;
3891         NewMsg->tlen = tlen;
3892
3893         NewMsg->maxlen = maxlen;
3894
3895         NewMsg->crlf = crlf;
3896
3897         return NewMsg;
3898 }
3899
3900 /*
3901  * Back end function used by CtdlMakeMessage() and similar functions
3902  */
3903 eReadState CtdlReadMessageBodyAsync(AsyncIO *IO)
3904 {
3905         ReadAsyncMsg *ReadMsg;
3906         int MsgFinished = 0;
3907         eReadState Finished = eMustReadMore;
3908
3909 #ifdef BIGBAD_IODBG
3910         char fn [SIZ];
3911         FILE *fd;
3912         const char *pch = ChrPtr(IO->SendBuf.Buf);
3913         const char *pchh = IO->SendBuf.ReadWritePointer;
3914         long nbytes;
3915
3916         if (pchh == NULL)
3917                 pchh = pch;
3918
3919         nbytes = StrLength(IO->SendBuf.Buf) - (pchh - pch);
3920         snprintf(fn, SIZ, "/tmp/foolog_ev_%s.%d",
3921                  ((CitContext*)(IO->CitContext))->ServiceName,
3922                  IO->SendBuf.fd);
3923
3924         fd = fopen(fn, "a+");
3925 #endif
3926
3927         ReadMsg = IO->ReadMsg;
3928
3929         /* read in the lines of message text one by one */
3930         do {
3931                 Finished = StrBufChunkSipLine(IO->IOBuf, &IO->RecvBuf);
3932
3933                 switch (Finished) {
3934                 case eMustReadMore: /// read new from socket...
3935 #ifdef BIGBAD_IODBG
3936                         if (IO->RecvBuf.ReadWritePointer != NULL) {
3937                                 nbytes = StrLength(IO->RecvBuf.Buf) - (IO->RecvBuf.ReadWritePointer - ChrPtr(IO->RecvBuf.Buf));
3938                                 fprintf(fd, "Read; Line unfinished: %ld Bytes still in buffer [", nbytes);
3939
3940                                 fwrite(IO->RecvBuf.ReadWritePointer, nbytes, 1, fd);
3941
3942                                 fprintf(fd, "]\n");
3943                         } else {
3944                                 fprintf(fd, "BufferEmpty! \n");
3945                         }
3946                         fclose(fd);
3947 #endif
3948                         return Finished;
3949                     break;
3950                 case eBufferNotEmpty: /* shouldn't happen... */
3951                 case eReadSuccess: /// done for now...
3952                     break;
3953                 case eReadFail: /// WHUT?
3954                     ///todo: shut down!
3955                         break;
3956                 }
3957
3958
3959                 if ((StrLength(IO->IOBuf) == ReadMsg->tlen) &&
3960                     (!strcmp(ChrPtr(IO->IOBuf), ReadMsg->terminator))) {
3961                         MsgFinished = 1;
3962 #ifdef BIGBAD_IODBG
3963                         fprintf(fd, "found Terminator; Message Size: %d\n", StrLength(ReadMsg->MsgBuf));
3964 #endif
3965                 }
3966                 else if (!ReadMsg->flushing) {
3967
3968 #ifdef BIGBAD_IODBG
3969                         fprintf(fd, "Read Line: [%d][%s]\n", StrLength(IO->IOBuf), ChrPtr(IO->IOBuf));
3970 #endif
3971
3972                         /* Unescape SMTP-style input of two dots at the beginning of the line */
3973                         if ((ReadMsg->dodot) &&
3974                             (StrLength(IO->IOBuf) == 2) &&  /* TODO: do we just unescape lines with two dots or any line? */
3975                             (!strcmp(ChrPtr(IO->IOBuf), "..")))
3976                         {
3977 #ifdef BIGBAD_IODBG
3978                                 fprintf(fd, "UnEscaped!\n");
3979 #endif
3980                                 StrBufCutLeft(IO->IOBuf, 1);
3981                         }
3982
3983                         if (ReadMsg->crlf) {
3984                                 StrBufAppendBufPlain(IO->IOBuf, HKEY("\r\n"), 0);
3985                         }
3986                         else {
3987                                 StrBufAppendBufPlain(IO->IOBuf, HKEY("\n"), 0);
3988                         }
3989
3990                         StrBufAppendBuf(ReadMsg->MsgBuf, IO->IOBuf, 0);
3991                 }
3992
3993                 /* if we've hit the max msg length, flush the rest */
3994                 if (StrLength(ReadMsg->MsgBuf) >= ReadMsg->maxlen) ReadMsg->flushing = 1;
3995
3996         } while (!MsgFinished);
3997
3998 #ifdef BIGBAD_IODBG
3999         fprintf(fd, "Done with reading; %s.\n, ",
4000                 (MsgFinished)?"Message Finished": "FAILED");
4001         fclose(fd);
4002 #endif
4003         if (MsgFinished)
4004                 return eReadSuccess;
4005         else
4006                 return eAbort;
4007 }
4008
4009
4010 /*
4011  * Back end function used by CtdlMakeMessage() and similar functions
4012  */
4013 char *CtdlReadMessageBody(char *terminator,     /* token signalling EOT */
4014                           long tlen,
4015                           size_t maxlen,                /* maximum message length */
4016                           StrBuf *exist,                /* if non-null, append to it;
4017                                                    exist is ALWAYS freed  */
4018                           int crlf,             /* CRLF newlines instead of LF */
4019                           int *sock             /* socket handle or 0 for this session's client socket */
4020         )
4021 {
4022         StrBuf *Message;
4023
4024         Message = CtdlReadMessageBodyBuf(terminator,
4025                                          tlen,
4026                                          maxlen,
4027                                          exist,
4028                                          crlf,
4029                                          sock);
4030         if (Message == NULL)
4031                 return NULL;
4032         else
4033                 return SmashStrBuf(&Message);
4034 }
4035
4036
4037 /*
4038  * Build a binary message to be saved on disk.
4039  * (NOTE: if you supply 'preformatted_text', the buffer you give it
4040  * will become part of the message.  This means you are no longer
4041  * responsible for managing that memory -- it will be freed along with
4042  * the rest of the fields when CM_Free() is called.)
4043  */
4044
4045 struct CtdlMessage *CtdlMakeMessage(
4046         struct ctdluser *author,        /* author's user structure */
4047         char *recipient,                /* NULL if it's not mail */
4048         char *recp_cc,                  /* NULL if it's not mail */
4049         char *room,                     /* room where it's going */
4050         int type,                       /* see MES_ types in header file */
4051         int format_type,                /* variformat, plain text, MIME... */
4052         char *fake_name,                /* who we're masquerading as */
4053         char *my_email,                 /* which of my email addresses to use (empty is ok) */
4054         char *subject,                  /* Subject (optional) */
4055         char *supplied_euid,            /* ...or NULL if this is irrelevant */
4056         char *preformatted_text,        /* ...or NULL to read text from client */
4057         char *references                /* Thread references */
4058         ) {
4059         char dest_node[256];
4060         char buf[1024];
4061         struct CtdlMessage *msg;
4062         StrBuf *FakeAuthor;
4063         StrBuf *FakeEncAuthor = NULL;
4064
4065         msg = malloc(sizeof(struct CtdlMessage));
4066         memset(msg, 0, sizeof(struct CtdlMessage));
4067         msg->cm_magic = CTDLMESSAGE_MAGIC;
4068         msg->cm_anon_type = type;
4069         msg->cm_format_type = format_type;
4070
4071         /* Don't confuse the poor folks if it's not routed mail. */
4072         strcpy(dest_node, "");
4073
4074         if (recipient != NULL) striplt(recipient);
4075         if (recp_cc != NULL) striplt(recp_cc);
4076
4077         /* Path or Return-Path */
4078         if (my_email == NULL) my_email = "";
4079
4080         if (!IsEmptyStr(my_email)) {
4081                 msg->cm_fields[eMessagePath] = strdup(my_email);
4082         }
4083         else {
4084                 snprintf(buf, sizeof buf, "%s", author->fullname);
4085                 msg->cm_fields[eMessagePath] = strdup(buf);
4086         }
4087         convert_spaces_to_underscores(msg->cm_fields[eMessagePath]);
4088
4089         snprintf(buf, sizeof buf, "%ld", (long)time(NULL));     /* timestamp */
4090         msg->cm_fields[eTimestamp] = strdup(buf);
4091
4092         if ((fake_name != NULL) && (fake_name[0])) {            /* author */
4093                 FakeAuthor = NewStrBufPlain (fake_name, -1);
4094         }
4095         else {
4096                 FakeAuthor = NewStrBufPlain (author->fullname, -1);
4097         }
4098         StrBufRFC2047encode(&FakeEncAuthor, FakeAuthor);
4099         msg->cm_fields[eAuthor] = SmashStrBuf(&FakeEncAuthor);
4100         FreeStrBuf(&FakeAuthor);
4101
4102         if (CC->room.QRflags & QR_MAILBOX) {            /* room */
4103                 msg->cm_fields[eOriginalRoom] = strdup(&CC->room.QRname[11]);
4104         }
4105         else {
4106                 msg->cm_fields[eOriginalRoom] = strdup(CC->room.QRname);
4107         }
4108
4109         msg->cm_fields[eNodeName] = strdup(NODENAME);           /* nodename */
4110         msg->cm_fields[eHumanNode] = strdup(HUMANNODE);         /* hnodename */
4111
4112         if ((recipient != NULL) && (recipient[0] != 0)) {
4113                 msg->cm_fields[eRecipient] = strdup(recipient);
4114         }
4115         if ((recp_cc != NULL) && (recp_cc[0] != 0)) {
4116                 msg->cm_fields[eCarbonCopY] = strdup(recp_cc);
4117         }
4118         if (dest_node[0] != 0) {
4119                 msg->cm_fields[eDestination] = strdup(dest_node);
4120         }
4121
4122         if (!IsEmptyStr(my_email)) {
4123                 msg->cm_fields[erFc822Addr] = strdup(my_email);
4124         }
4125         else if ( (author == &CC->user) && (!IsEmptyStr(CC->cs_inet_email)) ) {
4126                 msg->cm_fields[erFc822Addr] = strdup(CC->cs_inet_email);
4127         }
4128
4129         if (subject != NULL) {
4130                 long length;
4131                 striplt(subject);
4132                 length = strlen(subject);
4133                 if (length > 0) {
4134                         long i;
4135                         long IsAscii;
4136                         IsAscii = -1;
4137                         i = 0;
4138                         while ((subject[i] != '\0') &&
4139                                (IsAscii = isascii(subject[i]) != 0 ))
4140                                 i++;
4141                         if (IsAscii != 0)
4142                                 msg->cm_fields[eMsgSubject] = strdup(subject);
4143                         else /* ok, we've got utf8 in the string. */
4144                         {
4145                                 msg->cm_fields[eMsgSubject] = rfc2047encode(subject, length);
4146                         }
4147
4148                 }
4149         }
4150
4151         if (supplied_euid != NULL) {
4152                 msg->cm_fields[eExclusiveID] = strdup(supplied_euid);
4153         }
4154
4155         if ((references != NULL) && (!IsEmptyStr(references))) {
4156                 if (msg->cm_fields[eWeferences] != NULL)
4157                         free(msg->cm_fields[eWeferences]);
4158                 msg->cm_fields[eWeferences] = strdup(references);
4159         }
4160
4161         if (preformatted_text != NULL) {
4162                 msg->cm_fields[eMesageText] = preformatted_text;
4163         }
4164         else {
4165                 msg->cm_fields[eMesageText] = CtdlReadMessageBody(HKEY("000"), config.c_maxmsglen, NULL, 0, 0);
4166         }
4167
4168         return(msg);
4169 }
4170
4171
4172
4173 /*
4174  * Validate recipients, count delivery types and errors, and handle aliasing
4175  * FIXME check for dupes!!!!!
4176  *
4177  * Returns 0 if all addresses are ok, ret->num_error = -1 if no addresses
4178  * were specified, or the number of addresses found invalid.
4179  *
4180  * Caller needs to free the result using free_recipients()
4181  */
4182 struct recptypes *validate_recipients(const char *supplied_recipients,
4183                                       const char *RemoteIdentifier,
4184                                       int Flags) {
4185         struct CitContext *CCC = CC;
4186         struct recptypes *ret;
4187         char *recipients = NULL;
4188         char *org_recp;
4189         char this_recp[256];
4190         char this_recp_cooked[256];
4191         char append[SIZ];
4192         long len;
4193         int num_recps = 0;
4194         int i, j;
4195         int mailtype;
4196         int invalid;
4197         struct ctdluser tempUS;
4198         struct ctdlroom tempQR;
4199         struct ctdlroom tempQR2;
4200         int err = 0;
4201         char errmsg[SIZ];
4202         int in_quotes = 0;
4203
4204         /* Initialize */
4205         ret = (struct recptypes *) malloc(sizeof(struct recptypes));
4206         if (ret == NULL) return(NULL);
4207
4208         /* Set all strings to null and numeric values to zero */
4209         memset(ret, 0, sizeof(struct recptypes));
4210
4211         if (supplied_recipients == NULL) {
4212                 recipients = strdup("");
4213         }
4214         else {
4215                 recipients = strdup(supplied_recipients);
4216         }
4217
4218         /* Allocate some memory.  Yes, this allocates 500% more memory than we will
4219          * actually need, but it's healthier for the heap than doing lots of tiny
4220          * realloc() calls instead.
4221          */
4222         len = strlen(recipients) + 1024;
4223         ret->errormsg = malloc(len);
4224         ret->recp_local = malloc(len);
4225         ret->recp_internet = malloc(len);
4226         ret->recp_ignet = malloc(len);
4227         ret->recp_room = malloc(len);
4228         ret->display_recp = malloc(len);
4229         ret->recp_orgroom = malloc(len);
4230         org_recp = malloc(len);
4231
4232         ret->errormsg[0] = 0;
4233         ret->recp_local[0] = 0;
4234         ret->recp_internet[0] = 0;
4235         ret->recp_ignet[0] = 0;
4236         ret->recp_room[0] = 0;
4237         ret->recp_orgroom[0] = 0;
4238         ret->display_recp[0] = 0;
4239
4240         ret->recptypes_magic = RECPTYPES_MAGIC;
4241
4242         /* Change all valid separator characters to commas */
4243         for (i=0; !IsEmptyStr(&recipients[i]); ++i) {
4244                 if ((recipients[i] == ';') || (recipients[i] == '|')) {
4245                         recipients[i] = ',';
4246                 }
4247         }
4248
4249         /* Now start extracting recipients... */
4250
4251         while (!IsEmptyStr(recipients)) {
4252                 for (i=0; i<=strlen(recipients); ++i) {
4253                         if (recipients[i] == '\"') in_quotes = 1 - in_quotes;
4254                         if ( ( (recipients[i] == ',') && (!in_quotes) ) || (recipients[i] == 0) ) {
4255                                 safestrncpy(this_recp, recipients, i+1);
4256                                 this_recp[i] = 0;
4257                                 if (recipients[i] == ',') {
4258                                         strcpy(recipients, &recipients[i+1]);
4259                                 }
4260                                 else {
4261                                         strcpy(recipients, "");
4262                                 }
4263                                 break;
4264                         }
4265                 }
4266
4267                 striplt(this_recp);
4268                 if (IsEmptyStr(this_recp))
4269                         break;
4270                 MSG_syslog(LOG_DEBUG, "Evaluating recipient #%d: %s\n", num_recps, this_recp);
4271                 ++num_recps;
4272
4273                 strcpy(org_recp, this_recp);
4274                 alias(this_recp);
4275                 alias(this_recp);
4276                 mailtype = alias(this_recp);
4277
4278                 for (j = 0; !IsEmptyStr(&this_recp[j]); ++j) {
4279                         if (this_recp[j]=='_') {
4280                                 this_recp_cooked[j] = ' ';
4281                         }
4282                         else {
4283                                 this_recp_cooked[j] = this_recp[j];
4284                         }
4285                 }
4286                 this_recp_cooked[j] = '\0';
4287                 invalid = 0;
4288                 errmsg[0] = 0;
4289                 switch(mailtype) {
4290                 case MES_LOCAL:
4291                         if (!strcasecmp(this_recp, "sysop")) {
4292                                 ++ret->num_room;
4293                                 strcpy(this_recp, config.c_aideroom);
4294                                 if (!IsEmptyStr(ret->recp_room)) {
4295                                         strcat(ret->recp_room, "|");
4296                                 }
4297                                 strcat(ret->recp_room, this_recp);
4298                         }
4299                         else if ( (!strncasecmp(this_recp, "room_", 5))
4300                                   && (!CtdlGetRoom(&tempQR, &this_recp_cooked[5])) ) {
4301
4302                                 /* Save room so we can restore it later */
4303                                 tempQR2 = CCC->room;
4304                                 CCC->room = tempQR;
4305
4306                                 /* Check permissions to send mail to this room */
4307                                 err = CtdlDoIHavePermissionToPostInThisRoom(
4308                                         errmsg,
4309                                         sizeof errmsg,
4310                                         RemoteIdentifier,
4311                                         Flags,
4312                                         0                       /* 0 = not a reply */
4313                                         );
4314                                 if (err)
4315                                 {
4316                                         ++ret->num_error;
4317                                         invalid = 1;
4318                                 }
4319                                 else {
4320                                         ++ret->num_room;
4321                                         if (!IsEmptyStr(ret->recp_room)) {
4322                                                 strcat(ret->recp_room, "|");
4323                                         }
4324                                         strcat(ret->recp_room, &this_recp_cooked[5]);
4325
4326                                         if (!IsEmptyStr(ret->recp_orgroom)) {
4327                                                 strcat(ret->recp_orgroom, "|");
4328                                         }
4329                                         strcat(ret->recp_orgroom, org_recp);
4330
4331                                 }
4332
4333                                 /* Restore room in case something needs it */
4334                                 CCC->room = tempQR2;
4335
4336                         }
4337                         else if (CtdlGetUser(&tempUS, this_recp) == 0) {
4338                                 ++ret->num_local;
4339                                 strcpy(this_recp, tempUS.fullname);
4340                                 if (!IsEmptyStr(ret->recp_local)) {
4341                                         strcat(ret->recp_local, "|");
4342                                 }
4343                                 strcat(ret->recp_local, this_recp);
4344                         }
4345                         else if (CtdlGetUser(&tempUS, this_recp_cooked) == 0) {
4346                                 ++ret->num_local;
4347                                 strcpy(this_recp, tempUS.fullname);
4348                                 if (!IsEmptyStr(ret->recp_local)) {
4349                                         strcat(ret->recp_local, "|");
4350                                 }
4351                                 strcat(ret->recp_local, this_recp);
4352                         }
4353                         else {
4354                                 ++ret->num_error;
4355                                 invalid = 1;
4356                         }
4357                         break;
4358                 case MES_INTERNET:
4359                         /* Yes, you're reading this correctly: if the target
4360                          * domain points back to the local system or an attached
4361                          * Citadel directory, the address is invalid.  That's
4362                          * because if the address were valid, we would have
4363                          * already translated it to a local address by now.
4364                          */
4365                         if (IsDirectory(this_recp, 0)) {
4366                                 ++ret->num_error;
4367                                 invalid = 1;
4368                         }
4369                         else {
4370                                 ++ret->num_internet;
4371                                 if (!IsEmptyStr(ret->recp_internet)) {
4372                                         strcat(ret->recp_internet, "|");
4373                                 }
4374                                 strcat(ret->recp_internet, this_recp);
4375                         }
4376                         break;
4377                 case MES_IGNET:
4378                         ++ret->num_ignet;
4379                         if (!IsEmptyStr(ret->recp_ignet)) {
4380                                 strcat(ret->recp_ignet, "|");
4381                         }
4382                         strcat(ret->recp_ignet, this_recp);
4383                         break;
4384                 case MES_ERROR:
4385                         ++ret->num_error;
4386                         invalid = 1;
4387                         break;
4388                 }
4389                 if (invalid) {
4390                         if (IsEmptyStr(errmsg)) {
4391                                 snprintf(append, sizeof append, "Invalid recipient: %s", this_recp);
4392                         }
4393                         else {
4394                                 snprintf(append, sizeof append, "%s", errmsg);
4395                         }
4396                         if ( (strlen(ret->errormsg) + strlen(append) + 3) < SIZ) {
4397                                 if (!IsEmptyStr(ret->errormsg)) {
4398                                         strcat(ret->errormsg, "; ");
4399                                 }
4400                                 strcat(ret->errormsg, append);
4401                         }
4402                 }
4403                 else {
4404                         if (IsEmptyStr(ret->display_recp)) {
4405                                 strcpy(append, this_recp);
4406                         }
4407                         else {
4408                                 snprintf(append, sizeof append, ", %s", this_recp);
4409                         }
4410                         if ( (strlen(ret->display_recp)+strlen(append)) < SIZ) {
4411                                 strcat(ret->display_recp, append);
4412                         }
4413                 }
4414         }
4415         free(org_recp);
4416
4417         if ((ret->num_local + ret->num_internet + ret->num_ignet +
4418              ret->num_room + ret->num_error) == 0) {
4419                 ret->num_error = (-1);
4420                 strcpy(ret->errormsg, "No recipients specified.");
4421         }
4422
4423         MSGM_syslog(LOG_DEBUG, "validate_recipients()\n");
4424         MSG_syslog(LOG_DEBUG, " local: %d <%s>\n", ret->num_local, ret->recp_local);
4425         MSG_syslog(LOG_DEBUG, "  room: %d <%s>\n", ret->num_room, ret->recp_room);
4426         MSG_syslog(LOG_DEBUG, "  inet: %d <%s>\n", ret->num_internet, ret->recp_internet);
4427         MSG_syslog(LOG_DEBUG, " ignet: %d <%s>\n", ret->num_ignet, ret->recp_ignet);
4428         MSG_syslog(LOG_DEBUG, " error: %d <%s>\n", ret->num_error, ret->errormsg);
4429
4430         free(recipients);
4431         return(ret);
4432 }
4433
4434
4435 /*
4436  * Destructor for struct recptypes
4437  */
4438 void free_recipients(struct recptypes *valid) {
4439
4440         if (valid == NULL) {
4441                 return;
4442         }
4443
4444         if (valid->recptypes_magic != RECPTYPES_MAGIC) {
4445                 struct CitContext *CCC = CC;
4446                 MSGM_syslog(LOG_EMERG, "Attempt to call free_recipients() on some other data type!\n");
4447                 abort();
4448         }
4449
4450         if (valid->errormsg != NULL)            free(valid->errormsg);
4451         if (valid->recp_local != NULL)          free(valid->recp_local);
4452         if (valid->recp_internet != NULL)       free(valid->recp_internet);
4453         if (valid->recp_ignet != NULL)          free(valid->recp_ignet);
4454         if (valid->recp_room != NULL)           free(valid->recp_room);
4455         if (valid->recp_orgroom != NULL)        free(valid->recp_orgroom);
4456         if (valid->display_recp != NULL)        free(valid->display_recp);
4457         if (valid->bounce_to != NULL)           free(valid->bounce_to);
4458         if (valid->envelope_from != NULL)       free(valid->envelope_from);
4459         if (valid->sending_room != NULL)        free(valid->sending_room);
4460         free(valid);
4461 }
4462
4463
4464
4465 /*
4466  * message entry  -  mode 0 (normal)
4467  */
4468 void cmd_ent0(char *entargs)
4469 {
4470         struct CitContext *CCC = CC;
4471         int post = 0;
4472         char recp[SIZ];
4473         char cc[SIZ];
4474         char bcc[SIZ];
4475         char supplied_euid[128];
4476         int anon_flag = 0;
4477         int format_type = 0;
4478         char newusername[256];
4479         char newuseremail[256];
4480         struct CtdlMessage *msg;
4481         int anonymous = 0;
4482         char errmsg[SIZ];
4483         int err = 0;
4484         struct recptypes *valid = NULL;
4485         struct recptypes *valid_to = NULL;
4486         struct recptypes *valid_cc = NULL;
4487         struct recptypes *valid_bcc = NULL;
4488         char subject[SIZ];
4489         int subject_required = 0;
4490         int do_confirm = 0;
4491         long msgnum;
4492         int i, j;
4493         char buf[256];
4494         int newuseremail_ok = 0;
4495         char references[SIZ];
4496         char *ptr;
4497
4498         unbuffer_output();
4499
4500         post = extract_int(entargs, 0);
4501         extract_token(recp, entargs, 1, '|', sizeof recp);
4502         anon_flag = extract_int(entargs, 2);
4503         format_type = extract_int(entargs, 3);
4504         extract_token(subject, entargs, 4, '|', sizeof subject);
4505         extract_token(newusername, entargs, 5, '|', sizeof newusername);
4506         do_confirm = extract_int(entargs, 6);
4507         extract_token(cc, entargs, 7, '|', sizeof cc);
4508         extract_token(bcc, entargs, 8, '|', sizeof bcc);
4509         switch(CC->room.QRdefaultview) {
4510         case VIEW_NOTES:
4511         case VIEW_WIKI:
4512                 extract_token(supplied_euid, entargs, 9, '|', sizeof supplied_euid);
4513                 break;
4514         default:
4515                 supplied_euid[0] = 0;
4516                 break;
4517         }
4518         extract_token(newuseremail, entargs, 10, '|', sizeof newuseremail);
4519         extract_token(references, entargs, 11, '|', sizeof references);
4520         for (ptr=references; *ptr != 0; ++ptr) {
4521                 if (*ptr == '!') *ptr = '|';
4522         }
4523
4524         /* first check to make sure the request is valid. */
4525
4526         err = CtdlDoIHavePermissionToPostInThisRoom(
4527                 errmsg,
4528                 sizeof errmsg,
4529                 NULL,
4530                 POST_LOGGED_IN,
4531                 (!IsEmptyStr(references))               /* is this a reply?  or a top-level post? */
4532                 );
4533         if (err)
4534         {
4535                 cprintf("%d %s\n", err, errmsg);
4536                 return;
4537         }
4538
4539         /* Check some other permission type things. */
4540
4541         if (IsEmptyStr(newusername)) {
4542                 strcpy(newusername, CCC->user.fullname);
4543         }
4544         if (  (CCC->user.axlevel < AxAideU)
4545               && (strcasecmp(newusername, CCC->user.fullname))
4546               && (strcasecmp(newusername, CCC->cs_inet_fn))
4547                 ) {
4548                 cprintf("%d You don't have permission to author messages as '%s'.\n",
4549                         ERROR + HIGHER_ACCESS_REQUIRED,
4550                         newusername
4551                         );
4552                 return;
4553         }
4554
4555
4556         if (IsEmptyStr(newuseremail)) {
4557                 newuseremail_ok = 1;
4558         }
4559
4560         if (!IsEmptyStr(newuseremail)) {
4561                 if (!strcasecmp(newuseremail, CCC->cs_inet_email)) {
4562                         newuseremail_ok = 1;
4563                 }
4564                 else if (!IsEmptyStr(CCC->cs_inet_other_emails)) {
4565                         j = num_tokens(CCC->cs_inet_other_emails, '|');
4566                         for (i=0; i<j; ++i) {
4567                                 extract_token(buf, CCC->cs_inet_other_emails, i, '|', sizeof buf);
4568                                 if (!strcasecmp(newuseremail, buf)) {
4569                                         newuseremail_ok = 1;
4570                                 }
4571                         }
4572                 }
4573         }
4574
4575         if (!newuseremail_ok) {
4576                 cprintf("%d You don't have permission to author messages as '%s'.\n",
4577                         ERROR + HIGHER_ACCESS_REQUIRED,
4578                         newuseremail
4579                         );
4580                 return;
4581         }
4582
4583         CCC->cs_flags |= CS_POSTING;
4584
4585         /* In mailbox rooms we have to behave a little differently --
4586          * make sure the user has specified at least one recipient.  Then
4587          * validate the recipient(s).  We do this for the Mail> room, as
4588          * well as any room which has the "Mailbox" view set - unless it
4589          * is the DRAFTS room which does not require recipients
4590          */
4591
4592         if ( (  ( (CCC->room.QRflags & QR_MAILBOX) && (!strcasecmp(&CCC->room.QRname[11], MAILROOM)) )
4593                 || ( (CCC->room.QRflags & QR_MAILBOX) && (CCC->curr_view == VIEW_MAILBOX) )
4594                      ) && (strcasecmp(&CCC->room.QRname[11], USERDRAFTROOM)) !=0 ) {
4595                 if (CCC->user.axlevel < AxProbU) {
4596                         strcpy(recp, "sysop");
4597                         strcpy(cc, "");
4598                         strcpy(bcc, "");
4599                 }
4600
4601                 valid_to = validate_recipients(recp, NULL, 0);
4602                 if (valid_to->num_error > 0) {
4603                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_to->errormsg);
4604                         free_recipients(valid_to);
4605                         return;
4606                 }
4607
4608                 valid_cc = validate_recipients(cc, NULL, 0);
4609                 if (valid_cc->num_error > 0) {
4610                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_cc->errormsg);
4611                         free_recipients(valid_to);
4612                         free_recipients(valid_cc);
4613                         return;
4614                 }
4615
4616                 valid_bcc = validate_recipients(bcc, NULL, 0);
4617                 if (valid_bcc->num_error > 0) {
4618                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_bcc->errormsg);
4619                         free_recipients(valid_to);
4620                         free_recipients(valid_cc);
4621                         free_recipients(valid_bcc);
4622                         return;
4623                 }
4624
4625                 /* Recipient required, but none were specified */
4626                 if ( (valid_to->num_error < 0) && (valid_cc->num_error < 0) && (valid_bcc->num_error < 0) ) {
4627                         free_recipients(valid_to);
4628                         free_recipients(valid_cc);
4629                         free_recipients(valid_bcc);
4630                         cprintf("%d At least one recipient is required.\n", ERROR + NO_SUCH_USER);
4631                         return;
4632                 }
4633
4634                 if (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0) {
4635                         if (CtdlCheckInternetMailPermission(&CCC->user)==0) {
4636                                 cprintf("%d You do not have permission "
4637                                         "to send Internet mail.\n",
4638                                         ERROR + HIGHER_ACCESS_REQUIRED);
4639                                 free_recipients(valid_to);
4640                                 free_recipients(valid_cc);
4641                                 free_recipients(valid_bcc);
4642                                 return;
4643                         }
4644                 }
4645
4646                 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)
4647                      && (CCC->user.axlevel < AxNetU) ) {
4648                         cprintf("%d Higher access required for network mail.\n",
4649                                 ERROR + HIGHER_ACCESS_REQUIRED);
4650                         free_recipients(valid_to);
4651                         free_recipients(valid_cc);
4652                         free_recipients(valid_bcc);
4653                         return;
4654                 }
4655
4656                 if ((RESTRICT_INTERNET == 1)
4657                     && (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0)
4658                     && ((CCC->user.flags & US_INTERNET) == 0)
4659                     && (!CCC->internal_pgm)) {
4660                         cprintf("%d You don't have access to Internet mail.\n",
4661                                 ERROR + HIGHER_ACCESS_REQUIRED);
4662                         free_recipients(valid_to);
4663                         free_recipients(valid_cc);
4664                         free_recipients(valid_bcc);
4665                         return;
4666                 }
4667
4668         }
4669
4670         /* Is this a room which has anonymous-only or anonymous-option? */
4671         anonymous = MES_NORMAL;
4672         if (CCC->room.QRflags & QR_ANONONLY) {
4673                 anonymous = MES_ANONONLY;
4674         }
4675         if (CCC->room.QRflags & QR_ANONOPT) {
4676                 if (anon_flag == 1) {   /* only if the user requested it */
4677                         anonymous = MES_ANONOPT;
4678                 }
4679         }
4680
4681         if ((CCC->room.QRflags & QR_MAILBOX) == 0) {
4682                 recp[0] = 0;
4683         }
4684
4685         /* Recommend to the client that the use of a message subject is
4686          * strongly recommended in this room, if either the SUBJECTREQ flag
4687          * is set, or if there is one or more Internet email recipients.
4688          */
4689         if (CCC->room.QRflags2 & QR2_SUBJECTREQ) subject_required = 1;
4690         if ((valid_to)  && (valid_to->num_internet > 0))        subject_required = 1;
4691         if ((valid_cc)  && (valid_cc->num_internet > 0))        subject_required = 1;
4692         if ((valid_bcc) && (valid_bcc->num_internet > 0))       subject_required = 1;
4693
4694         /* If we're only checking the validity of the request, return
4695          * success without creating the message.
4696          */
4697         if (post == 0) {
4698                 cprintf("%d %s|%d\n", CIT_OK,
4699                         ((valid_to != NULL) ? valid_to->display_recp : ""),
4700                         subject_required);
4701                 free_recipients(valid_to);
4702                 free_recipients(valid_cc);
4703                 free_recipients(valid_bcc);
4704                 return;
4705         }
4706
4707         /* We don't need these anymore because we'll do it differently below */
4708         free_recipients(valid_to);
4709         free_recipients(valid_cc);
4710         free_recipients(valid_bcc);
4711
4712         /* Read in the message from the client. */
4713         if (do_confirm) {
4714                 cprintf("%d send message\n", START_CHAT_MODE);
4715         } else {
4716                 cprintf("%d send message\n", SEND_LISTING);
4717         }
4718
4719         msg = CtdlMakeMessage(&CCC->user, recp, cc,
4720                               CCC->room.QRname, anonymous, format_type,
4721                               newusername, newuseremail, subject,
4722                               ((!IsEmptyStr(supplied_euid)) ? supplied_euid : NULL),
4723                               NULL, references);
4724
4725         /* Put together one big recipients struct containing to/cc/bcc all in
4726          * one.  This is for the envelope.
4727          */
4728         char *all_recps = malloc(SIZ * 3);
4729         strcpy(all_recps, recp);
4730         if (!IsEmptyStr(cc)) {
4731                 if (!IsEmptyStr(all_recps)) {
4732                         strcat(all_recps, ",");
4733                 }
4734                 strcat(all_recps, cc);
4735         }
4736         if (!IsEmptyStr(bcc)) {
4737                 if (!IsEmptyStr(all_recps)) {
4738                         strcat(all_recps, ",");
4739                 }
4740                 strcat(all_recps, bcc);
4741         }
4742         if (!IsEmptyStr(all_recps)) {
4743                 valid = validate_recipients(all_recps, NULL, 0);
4744         }
4745         else {
4746                 valid = NULL;
4747         }
4748         free(all_recps);
4749
4750         if ((valid != NULL) && (valid->num_room == 1))
4751         {
4752                 /* posting into an ML room? set the envelope from
4753                  * to the actual mail address so others get a valid
4754                  * reply-to-header.
4755                  */
4756                 msg->cm_fields[eenVelopeTo] = strdup(valid->recp_orgroom);
4757         }
4758
4759         if (msg != NULL) {
4760                 msgnum = CtdlSubmitMsg(msg, valid, "", QP_EADDR);
4761                 if (do_confirm) {
4762                         cprintf("%ld\n", msgnum);
4763
4764                         if (StrLength(CCC->StatusMessage) > 0) {
4765                                 cprintf("%s\n", ChrPtr(CCC->StatusMessage));
4766                         }
4767                         else if (msgnum >= 0L) {
4768                                 client_write(HKEY("Message accepted.\n"));
4769                         }
4770                         else {
4771                                 client_write(HKEY("Internal error.\n"));
4772                         }
4773
4774                         if (!CM_IsEmpty(msg, eExclusiveID)) {
4775                                 cprintf("%s\n", msg->cm_fields[eExclusiveID]);
4776                         } else {
4777                                 cprintf("\n");
4778                         }
4779                         cprintf("000\n");
4780                 }
4781
4782                 CM_Free(msg);
4783         }
4784         if (valid != NULL) {
4785                 free_recipients(valid);
4786         }
4787         return;
4788 }
4789
4790
4791
4792 /*
4793  * API function to delete messages which match a set of criteria
4794  * (returns the actual number of messages deleted)
4795  */
4796 int CtdlDeleteMessages(char *room_name,         /* which room */
4797                        long *dmsgnums,          /* array of msg numbers to be deleted */
4798                        int num_dmsgnums,        /* number of msgs to be deleted, or 0 for "any" */
4799                        char *content_type       /* or "" for any.  regular expressions expected. */
4800         )
4801 {
4802         struct CitContext *CCC = CC;
4803         struct ctdlroom qrbuf;
4804         struct cdbdata *cdbfr;
4805         long *msglist = NULL;
4806         long *dellist = NULL;
4807         int num_msgs = 0;
4808         int i, j;
4809         int num_deleted = 0;
4810         int delete_this;
4811         struct MetaData smi;
4812         regex_t re;
4813         regmatch_t pm;
4814         int need_to_free_re = 0;
4815
4816         if (content_type) if (!IsEmptyStr(content_type)) {
4817                         regcomp(&re, content_type, 0);
4818                         need_to_free_re = 1;
4819                 }
4820         MSG_syslog(LOG_DEBUG, " CtdlDeleteMessages(%s, %d msgs, %s)\n",
4821                    room_name, num_dmsgnums, content_type);
4822
4823         /* get room record, obtaining a lock... */
4824         if (CtdlGetRoomLock(&qrbuf, room_name) != 0) {
4825                 MSG_syslog(LOG_ERR, " CtdlDeleteMessages(): Room <%s> not found\n",
4826                            room_name);
4827                 if (need_to_free_re) regfree(&re);
4828                 return (0);     /* room not found */
4829         }
4830         cdbfr = cdb_fetch(CDB_MSGLISTS, &qrbuf.QRnumber, sizeof(long));
4831
4832         if (cdbfr != NULL) {
4833                 dellist = malloc(cdbfr->len);
4834                 msglist = (long *) cdbfr->ptr;
4835                 cdbfr->ptr = NULL;      /* CtdlDeleteMessages() now owns this memory */
4836                 num_msgs = cdbfr->len / sizeof(long);
4837                 cdb_free(cdbfr);
4838         }
4839         if (num_msgs > 0) {
4840                 int have_contenttype = (content_type != NULL) && !IsEmptyStr(content_type);
4841                 int have_delmsgs = (num_dmsgnums == 0) || (dmsgnums == NULL);
4842                 int have_more_del = 1;
4843
4844                 num_msgs = sort_msglist(msglist, num_msgs);
4845                 if (num_dmsgnums > 1)
4846                         num_dmsgnums = sort_msglist(dmsgnums, num_dmsgnums);
4847 /*
4848                 {
4849                         StrBuf *dbg = NewStrBuf();
4850                         for (i = 0; i < num_dmsgnums; i++)
4851                                 StrBufAppendPrintf(dbg, ", %ld", dmsgnums[i]);
4852                         MSG_syslog(LOG_DEBUG, " Deleting before: %s", ChrPtr(dbg));
4853                         FreeStrBuf(&dbg);
4854                 }
4855 */
4856                 i = 0; j = 0;
4857                 while ((i < num_msgs) && (have_more_del)) {
4858                         delete_this = 0x00;
4859
4860                         /* Set/clear a bit for each criterion */
4861
4862                         /* 0 messages in the list or a null list means that we are
4863                          * interested in deleting any messages which meet the other criteria.
4864                          */
4865                         if (have_delmsgs) {
4866                                 delete_this |= 0x01;
4867                         }
4868                         else {
4869                                 while ((i < num_msgs) && (msglist[i] < dmsgnums[j])) i++;
4870
4871                                 if (i >= num_msgs)
4872                                         continue;
4873
4874                                 if (msglist[i] == dmsgnums[j]) {
4875                                         delete_this |= 0x01;
4876                                 }
4877                                 j++;
4878                                 have_more_del = (j < num_dmsgnums);
4879                         }
4880
4881                         if (have_contenttype) {
4882                                 GetMetaData(&smi, msglist[i]);
4883                                 if (regexec(&re, smi.meta_content_type, 1, &pm, 0) == 0) {
4884                                         delete_this |= 0x02;
4885                                 }
4886                         } else {
4887                                 delete_this |= 0x02;
4888                         }
4889
4890                         /* Delete message only if all bits are set */
4891                         if (delete_this == 0x03) {
4892                                 dellist[num_deleted++] = msglist[i];
4893                                 msglist[i] = 0L;
4894                         }
4895                         i++;
4896                 }
4897 /*
4898                 {
4899                         StrBuf *dbg = NewStrBuf();
4900                         for (i = 0; i < num_deleted; i++)
4901                                 StrBufAppendPrintf(dbg, ", %ld", dellist[i]);
4902                         MSG_syslog(LOG_DEBUG, " Deleting: %s", ChrPtr(dbg));
4903                         FreeStrBuf(&dbg);
4904                 }
4905 */
4906                 num_msgs = sort_msglist(msglist, num_msgs);
4907                 cdb_store(CDB_MSGLISTS, &qrbuf.QRnumber, (int)sizeof(long),
4908                           msglist, (int)(num_msgs * sizeof(long)));
4909
4910                 if (num_msgs > 0)
4911                         qrbuf.QRhighest = msglist[num_msgs - 1];
4912                 else
4913                         qrbuf.QRhighest = 0;
4914         }
4915         CtdlPutRoomLock(&qrbuf);
4916
4917         /* Go through the messages we pulled out of the index, and decrement
4918          * their reference counts by 1.  If this is the only room the message
4919          * was in, the reference count will reach zero and the message will
4920          * automatically be deleted from the database.  We do this in a
4921          * separate pass because there might be plug-in hooks getting called,
4922          * and we don't want that happening during an S_ROOMS critical
4923          * section.
4924          */
4925         if (num_deleted) {
4926                 for (i=0; i<num_deleted; ++i) {
4927                         PerformDeleteHooks(qrbuf.QRname, dellist[i]);
4928                 }
4929                 AdjRefCountList(dellist, num_deleted, -1);
4930         }
4931         /* Now free the memory we used, and go away. */
4932         if (msglist != NULL) free(msglist);
4933         if (dellist != NULL) free(dellist);
4934         MSG_syslog(LOG_DEBUG, " %d message(s) deleted.\n", num_deleted);
4935         if (need_to_free_re) regfree(&re);
4936         return (num_deleted);
4937 }
4938
4939 /*
4940  * Delete message from current room
4941  */
4942 void cmd_dele(char *args)
4943 {
4944         int num_deleted;
4945         int i;
4946         char msgset[SIZ];
4947         char msgtok[32];
4948         long *msgs;
4949         int num_msgs = 0;
4950
4951         extract_token(msgset, args, 0, '|', sizeof msgset);
4952         num_msgs = num_tokens(msgset, ',');
4953         if (num_msgs < 1) {
4954                 cprintf("%d Nothing to do.\n", CIT_OK);
4955                 return;
4956         }
4957
4958         if (CtdlDoIHavePermissionToDeleteMessagesFromThisRoom() == 0) {
4959                 cprintf("%d Higher access required.\n",
4960                         ERROR + HIGHER_ACCESS_REQUIRED);
4961                 return;
4962         }
4963
4964         /*
4965          * Build our message set to be moved/copied
4966          */
4967         msgs = malloc(num_msgs * sizeof(long));
4968         for (i=0; i<num_msgs; ++i) {
4969                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4970                 msgs[i] = atol(msgtok);
4971         }
4972
4973         num_deleted = CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4974         free(msgs);
4975
4976         if (num_deleted) {
4977                 cprintf("%d %d message%s deleted.\n", CIT_OK,
4978                         num_deleted, ((num_deleted != 1) ? "s" : ""));
4979         } else {
4980                 cprintf("%d Message not found.\n", ERROR + MESSAGE_NOT_FOUND);
4981         }
4982 }
4983
4984
4985
4986
4987 /*
4988  * move or copy a message to another room
4989  */
4990 void cmd_move(char *args)
4991 {
4992         char msgset[SIZ];
4993         char msgtok[32];
4994         long *msgs;
4995         int num_msgs = 0;
4996
4997         char targ[ROOMNAMELEN];
4998         struct ctdlroom qtemp;
4999         int err;
5000         int is_copy = 0;
5001         int ra;
5002         int permit = 0;
5003         int i;
5004
5005         extract_token(msgset, args, 0, '|', sizeof msgset);
5006         num_msgs = num_tokens(msgset, ',');
5007         if (num_msgs < 1) {
5008                 cprintf("%d Nothing to do.\n", CIT_OK);
5009                 return;
5010         }
5011
5012         extract_token(targ, args, 1, '|', sizeof targ);
5013         convert_room_name_macros(targ, sizeof targ);
5014         targ[ROOMNAMELEN - 1] = 0;
5015         is_copy = extract_int(args, 2);
5016
5017         if (CtdlGetRoom(&qtemp, targ) != 0) {
5018                 cprintf("%d '%s' does not exist.\n", ERROR + ROOM_NOT_FOUND, targ);
5019                 return;
5020         }
5021
5022         if (!strcasecmp(qtemp.QRname, CC->room.QRname)) {
5023                 cprintf("%d Source and target rooms are the same.\n", ERROR + ALREADY_EXISTS);
5024                 return;
5025         }
5026
5027         CtdlGetUser(&CC->user, CC->curr_user);
5028         CtdlRoomAccess(&qtemp, &CC->user, &ra, NULL);
5029
5030         /* Check for permission to perform this operation.
5031          * Remember: "CC->room" is source, "qtemp" is target.
5032          */
5033         permit = 0;
5034
5035         /* Admins can move/copy */
5036         if (CC->user.axlevel >= AxAideU) permit = 1;
5037
5038         /* Room aides can move/copy */
5039         if (CC->user.usernum == CC->room.QRroomaide) permit = 1;
5040
5041         /* Permit move/copy from personal rooms */
5042         if ((CC->room.QRflags & QR_MAILBOX)
5043             && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
5044
5045         /* Permit only copy from public to personal room */
5046         if ( (is_copy)
5047              && (!(CC->room.QRflags & QR_MAILBOX))
5048              && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
5049
5050         /* Permit message removal from collaborative delete rooms */
5051         if (CC->room.QRflags2 & QR2_COLLABDEL) permit = 1;
5052
5053         /* Users allowed to post into the target room may move into it too. */
5054         if ((CC->room.QRflags & QR_MAILBOX) &&
5055             (qtemp.QRflags & UA_POSTALLOWED))  permit = 1;
5056
5057         /* User must have access to target room */
5058         if (!(ra & UA_KNOWN))  permit = 0;
5059
5060         if (!permit) {
5061                 cprintf("%d Higher access required.\n",
5062                         ERROR + HIGHER_ACCESS_REQUIRED);
5063                 return;
5064         }
5065
5066         /*
5067          * Build our message set to be moved/copied
5068          */
5069         msgs = malloc(num_msgs * sizeof(long));
5070         for (i=0; i<num_msgs; ++i) {
5071                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
5072                 msgs[i] = atol(msgtok);
5073         }
5074
5075         /*
5076          * Do the copy
5077          */
5078         err = CtdlSaveMsgPointersInRoom(targ, msgs, num_msgs, 1, NULL, 0);
5079         if (err != 0) {
5080                 cprintf("%d Cannot store message(s) in %s: error %d\n",
5081                         err, targ, err);
5082                 free(msgs);
5083                 return;
5084         }
5085
5086         /* Now delete the message from the source room,
5087          * if this is a 'move' rather than a 'copy' operation.
5088          */
5089         if (is_copy == 0) {
5090                 CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
5091         }
5092         free(msgs);
5093
5094         cprintf("%d Message(s) %s.\n", CIT_OK, (is_copy ? "copied" : "moved") );
5095 }
5096
5097
5098
5099 /*
5100  * GetMetaData()  -  Get the supplementary record for a message
5101  */
5102 void GetMetaData(struct MetaData *smibuf, long msgnum)
5103 {
5104
5105         struct cdbdata *cdbsmi;
5106         long TheIndex;
5107
5108         memset(smibuf, 0, sizeof(struct MetaData));
5109         smibuf->meta_msgnum = msgnum;
5110         smibuf->meta_refcount = 1;      /* Default reference count is 1 */
5111
5112         /* Use the negative of the message number for its supp record index */
5113         TheIndex = (0L - msgnum);
5114
5115         cdbsmi = cdb_fetch(CDB_MSGMAIN, &TheIndex, sizeof(long));
5116         if (cdbsmi == NULL) {
5117                 return;         /* record not found; go with defaults */
5118         }
5119         memcpy(smibuf, cdbsmi->ptr,
5120                ((cdbsmi->len > sizeof(struct MetaData)) ?
5121                 sizeof(struct MetaData) : cdbsmi->len));
5122         cdb_free(cdbsmi);
5123         return;
5124 }
5125
5126
5127 /*
5128  * PutMetaData()  -  (re)write supplementary record for a message
5129  */
5130 void PutMetaData(struct MetaData *smibuf)
5131 {
5132         long TheIndex;
5133
5134         /* Use the negative of the message number for the metadata db index */
5135         TheIndex = (0L - smibuf->meta_msgnum);
5136
5137         cdb_store(CDB_MSGMAIN,
5138                   &TheIndex, (int)sizeof(long),
5139                   smibuf, (int)sizeof(struct MetaData));
5140
5141 }
5142
5143 /*
5144  * AdjRefCount  -  submit an adjustment to the reference count for a message.
5145  *                 (These are just queued -- we actually process them later.)
5146  */
5147 void AdjRefCount(long msgnum, int incr)
5148 {
5149         struct CitContext *CCC = CC;
5150         struct arcq new_arcq;
5151         int rv = 0;
5152
5153         MSG_syslog(LOG_DEBUG, "AdjRefCount() msg %ld ref count delta %+d\n", msgnum, incr);
5154
5155         begin_critical_section(S_SUPPMSGMAIN);
5156         if (arcfp == NULL) {
5157                 arcfp = fopen(file_arcq, "ab+");
5158                 chown(file_arcq, CTDLUID, (-1));
5159                 chmod(file_arcq, 0600);
5160         }
5161         end_critical_section(S_SUPPMSGMAIN);
5162
5163         /* msgnum < 0 means that we're trying to close the file */
5164         if (msgnum < 0) {
5165                 MSGM_syslog(LOG_DEBUG, "Closing the AdjRefCount queue file\n");
5166                 begin_critical_section(S_SUPPMSGMAIN);
5167                 if (arcfp != NULL) {
5168                         fclose(arcfp);
5169                         arcfp = NULL;
5170                 }
5171                 end_critical_section(S_SUPPMSGMAIN);
5172                 return;
5173         }
5174
5175         /*
5176          * If we can't open the queue, perform the operation synchronously.
5177          */
5178         if (arcfp == NULL) {
5179                 TDAP_AdjRefCount(msgnum, incr);
5180                 return;
5181         }
5182
5183         new_arcq.arcq_msgnum = msgnum;
5184         new_arcq.arcq_delta = incr;
5185         rv = fwrite(&new_arcq, sizeof(struct arcq), 1, arcfp);
5186         if (rv == -1) {
5187                 MSG_syslog(LOG_EMERG, "Couldn't write Refcount Queue File %s: %s\n",
5188                            file_arcq,
5189                            strerror(errno));
5190         }
5191         fflush(arcfp);
5192
5193         return;
5194 }
5195
5196 void AdjRefCountList(long *msgnum, long nmsg, int incr)
5197 {
5198         struct CitContext *CCC = CC;
5199         long i, the_size, offset;
5200         struct arcq *new_arcq;
5201         int rv = 0;
5202
5203         MSG_syslog(LOG_DEBUG, "AdjRefCountList() msg %ld ref count delta %+d\n", nmsg, incr);
5204
5205         begin_critical_section(S_SUPPMSGMAIN);
5206         if (arcfp == NULL) {
5207                 arcfp = fopen(file_arcq, "ab+");
5208                 chown(file_arcq, CTDLUID, (-1));
5209                 chmod(file_arcq, 0600);
5210         }
5211         end_critical_section(S_SUPPMSGMAIN);
5212
5213         /*
5214          * If we can't open the queue, perform the operation synchronously.
5215          */
5216         if (arcfp == NULL) {
5217                 for (i = 0; i < nmsg; i++)
5218                         TDAP_AdjRefCount(msgnum[i], incr);
5219                 return;
5220         }
5221
5222         the_size = sizeof(struct arcq) * nmsg;
5223         new_arcq = malloc(the_size);
5224         for (i = 0; i < nmsg; i++) {
5225                 new_arcq[i].arcq_msgnum = msgnum[i];
5226                 new_arcq[i].arcq_delta = incr;
5227         }
5228         rv = 0;
5229         offset = 0;
5230         while ((rv >= 0) && (offset < the_size))
5231         {
5232                 rv = fwrite(new_arcq + offset, 1, the_size - offset, arcfp);
5233                 if (rv == -1) {
5234                         MSG_syslog(LOG_EMERG, "Couldn't write Refcount Queue File %s: %s\n",
5235                                    file_arcq,
5236                                    strerror(errno));
5237                 }
5238                 else {
5239                         offset += rv;
5240                 }
5241         }
5242         free(new_arcq);
5243         fflush(arcfp);
5244
5245         return;
5246 }
5247
5248
5249 /*
5250  * TDAP_ProcessAdjRefCountQueue()
5251  *
5252  * Process the queue of message count adjustments that was created by calls
5253  * to AdjRefCount() ... by reading the queue and calling TDAP_AdjRefCount()
5254  * for each one.  This should be an "off hours" operation.
5255  */
5256 int TDAP_ProcessAdjRefCountQueue(void)
5257 {
5258         struct CitContext *CCC = CC;
5259         char file_arcq_temp[PATH_MAX];
5260         int r;
5261         FILE *fp;
5262         struct arcq arcq_rec;
5263         int num_records_processed = 0;
5264
5265         snprintf(file_arcq_temp, sizeof file_arcq_temp, "%s.%04x", file_arcq, rand());
5266
5267         begin_critical_section(S_SUPPMSGMAIN);
5268         if (arcfp != NULL) {
5269                 fclose(arcfp);
5270                 arcfp = NULL;
5271         }
5272
5273         r = link(file_arcq, file_arcq_temp);
5274         if (r != 0) {
5275                 MSG_syslog(LOG_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
5276                 end_critical_section(S_SUPPMSGMAIN);
5277                 return(num_records_processed);
5278         }
5279
5280         unlink(file_arcq);
5281         end_critical_section(S_SUPPMSGMAIN);
5282
5283         fp = fopen(file_arcq_temp, "rb");
5284         if (fp == NULL) {
5285                 MSG_syslog(LOG_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
5286                 return(num_records_processed);
5287         }
5288
5289         while (fread(&arcq_rec, sizeof(struct arcq), 1, fp) == 1) {
5290                 TDAP_AdjRefCount(arcq_rec.arcq_msgnum, arcq_rec.arcq_delta);
5291                 ++num_records_processed;
5292         }
5293
5294         fclose(fp);
5295         r = unlink(file_arcq_temp);
5296         if (r != 0) {
5297                 MSG_syslog(LOG_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
5298         }
5299
5300         return(num_records_processed);
5301 }
5302
5303
5304
5305 /*
5306  * TDAP_AdjRefCount  -  adjust the reference count for a message.
5307  *                      This one does it "for real" because it's called by
5308  *                      the autopurger function that processes the queue
5309  *                      created by AdjRefCount().   If a message's reference
5310  *                      count becomes zero, we also delete the message from
5311  *                      disk and de-index it.
5312  */
5313 void TDAP_AdjRefCount(long msgnum, int incr)
5314 {
5315         struct CitContext *CCC = CC;
5316
5317         struct MetaData smi;
5318         long delnum;
5319
5320         /* This is a *tight* critical section; please keep it that way, as
5321          * it may get called while nested in other critical sections.
5322          * Complicating this any further will surely cause deadlock!
5323          */
5324         begin_critical_section(S_SUPPMSGMAIN);
5325         GetMetaData(&smi, msgnum);
5326         smi.meta_refcount += incr;
5327         PutMetaData(&smi);
5328         end_critical_section(S_SUPPMSGMAIN);
5329         MSG_syslog(LOG_DEBUG, "TDAP_AdjRefCount() msg %ld ref count delta %+d, is now %d\n",
5330                    msgnum, incr, smi.meta_refcount
5331                 );
5332
5333         /* If the reference count is now zero, delete the message
5334          * (and its supplementary record as well).
5335          */
5336         if (smi.meta_refcount == 0) {
5337                 MSG_syslog(LOG_DEBUG, "Deleting message <%ld>\n", msgnum);
5338
5339                 /* Call delete hooks with NULL room to show it has gone altogether */
5340                 PerformDeleteHooks(NULL, msgnum);
5341
5342                 /* Remove from message base */
5343                 delnum = msgnum;
5344                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
5345                 cdb_delete(CDB_BIGMSGS, &delnum, (int)sizeof(long));
5346
5347                 /* Remove metadata record */
5348                 delnum = (0L - msgnum);
5349                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
5350         }
5351
5352 }
5353
5354 /*
5355  * Write a generic object to this room
5356  *
5357  * Note: this could be much more efficient.  Right now we use two temporary
5358  * files, and still pull the message into memory as with all others.
5359  */
5360 void CtdlWriteObject(char *req_room,                    /* Room to stuff it in */
5361                      char *content_type,                /* MIME type of this object */
5362                      char *raw_message,         /* Data to be written */
5363                      off_t raw_length,          /* Size of raw_message */
5364                      struct ctdluser *is_mailbox,       /* Mailbox room? */
5365                      int is_binary,                     /* Is encoding necessary? */
5366                      int is_unique,                     /* Del others of this type? */
5367                      unsigned int flags         /* Internal save flags */
5368         )
5369 {
5370         struct CitContext *CCC = CC;
5371         struct ctdlroom qrbuf;
5372         char roomname[ROOMNAMELEN];
5373         struct CtdlMessage *msg;
5374         char *encoded_message = NULL;
5375
5376         if (is_mailbox != NULL) {
5377                 CtdlMailboxName(roomname, sizeof roomname, is_mailbox, req_room);
5378         }
5379         else {
5380                 safestrncpy(roomname, req_room, sizeof(roomname));
5381         }
5382
5383         MSG_syslog(LOG_DEBUG, "Raw length is %ld\n", (long)raw_length);
5384
5385         if (is_binary) {
5386                 encoded_message = malloc((size_t) (((raw_length * 134) / 100) + 4096 ) );
5387         }
5388         else {
5389                 encoded_message = malloc((size_t)(raw_length + 4096));
5390         }
5391
5392         sprintf(encoded_message, "Content-type: %s\n", content_type);
5393
5394         if (is_binary) {
5395                 sprintf(&encoded_message[strlen(encoded_message)],
5396                         "Content-transfer-encoding: base64\n\n"
5397                         );
5398         }
5399         else {
5400                 sprintf(&encoded_message[strlen(encoded_message)],
5401                         "Content-transfer-encoding: 7bit\n\n"
5402                         );
5403         }
5404
5405         if (is_binary) {
5406                 CtdlEncodeBase64(
5407                         &encoded_message[strlen(encoded_message)],
5408                         raw_message,
5409                         (int)raw_length,
5410                         0
5411                         );
5412         }
5413         else {
5414                 memcpy(
5415                         &encoded_message[strlen(encoded_message)],
5416                         raw_message,
5417                         (int)(raw_length+1)
5418                         );
5419         }
5420
5421         MSGM_syslog(LOG_DEBUG, "Allocating\n");
5422         msg = malloc(sizeof(struct CtdlMessage));
5423         memset(msg, 0, sizeof(struct CtdlMessage));
5424         msg->cm_magic = CTDLMESSAGE_MAGIC;
5425         msg->cm_anon_type = MES_NORMAL;
5426         msg->cm_format_type = 4;
5427         msg->cm_fields[eAuthor] = strdup(CCC->user.fullname);
5428         msg->cm_fields[eOriginalRoom] = strdup(req_room);
5429         msg->cm_fields[eNodeName] = strdup(config.c_nodename);
5430         msg->cm_fields[eHumanNode] = strdup(config.c_humannode);
5431         msg->cm_flags = flags;
5432
5433         msg->cm_fields[eMesageText] = encoded_message;
5434
5435         /* Create the requested room if we have to. */
5436         if (CtdlGetRoom(&qrbuf, roomname) != 0) {
5437                 CtdlCreateRoom(roomname,
5438                                ( (is_mailbox != NULL) ? 5 : 3 ),
5439                                "", 0, 1, 0, VIEW_BBS);
5440         }
5441         /* If the caller specified this object as unique, delete all
5442          * other objects of this type that are currently in the room.
5443          */
5444         if (is_unique) {
5445                 MSG_syslog(LOG_DEBUG, "Deleted %d other msgs of this type\n",
5446                            CtdlDeleteMessages(roomname, NULL, 0, content_type)
5447                         );
5448         }
5449         /* Now write the data */
5450         CtdlSubmitMsg(msg, NULL, roomname, 0);
5451         CM_Free(msg);
5452 }
5453
5454
5455
5456
5457
5458
5459 void CtdlGetSysConfigBackend(long msgnum, void *userdata) {
5460         config_msgnum = msgnum;
5461 }
5462
5463
5464 char *CtdlGetSysConfig(char *sysconfname) {
5465         char hold_rm[ROOMNAMELEN];
5466         long msgnum;
5467         char *conf;
5468         struct CtdlMessage *msg;
5469         char buf[SIZ];
5470
5471         strcpy(hold_rm, CC->room.QRname);
5472         if (CtdlGetRoom(&CC->room, SYSCONFIGROOM) != 0) {
5473                 CtdlGetRoom(&CC->room, hold_rm);
5474                 return NULL;
5475         }
5476
5477
5478         /* We want the last (and probably only) config in this room */
5479         begin_critical_section(S_CONFIG);
5480         config_msgnum = (-1L);
5481         CtdlForEachMessage(MSGS_LAST, 1, NULL, sysconfname, NULL,
5482                            CtdlGetSysConfigBackend, NULL);
5483         msgnum = config_msgnum;
5484         end_critical_section(S_CONFIG);
5485
5486         if (msgnum < 0L) {
5487                 conf = NULL;
5488         }
5489         else {
5490                 msg = CtdlFetchMessage(msgnum, 1);
5491                 if (msg != NULL) {
5492                         conf = strdup(msg->cm_fields[eMesageText]);
5493                         CM_Free(msg);
5494                 }
5495                 else {
5496                         conf = NULL;
5497                 }
5498         }
5499
5500         CtdlGetRoom(&CC->room, hold_rm);
5501
5502         if (conf != NULL) do {
5503                         extract_token(buf, conf, 0, '\n', sizeof buf);
5504                         strcpy(conf, &conf[strlen(buf)+1]);
5505                 } while ( (!IsEmptyStr(conf)) && (!IsEmptyStr(buf)) );
5506
5507         return(conf);
5508 }
5509
5510
5511 void CtdlPutSysConfig(char *sysconfname, char *sysconfdata) {
5512         CtdlWriteObject(SYSCONFIGROOM, sysconfname, sysconfdata, (strlen(sysconfdata)+1), NULL, 0, 1, 0);
5513 }
5514
5515
5516 /*
5517  * Determine whether a given Internet address belongs to the current user
5518  */
5519 int CtdlIsMe(char *addr, int addr_buf_len)
5520 {
5521         struct recptypes *recp;
5522         int i;
5523
5524         recp = validate_recipients(addr, NULL, 0);
5525         if (recp == NULL) return(0);
5526
5527         if (recp->num_local == 0) {
5528                 free_recipients(recp);
5529                 return(0);
5530         }
5531
5532         for (i=0; i<recp->num_local; ++i) {
5533                 extract_token(addr, recp->recp_local, i, '|', addr_buf_len);
5534                 if (!strcasecmp(addr, CC->user.fullname)) {
5535                         free_recipients(recp);
5536                         return(1);
5537                 }
5538         }
5539
5540         free_recipients(recp);
5541         return(0);
5542 }
5543
5544
5545 /*
5546  * Citadel protocol command to do the same
5547  */
5548 void cmd_isme(char *argbuf) {
5549         char addr[256];
5550
5551         if (CtdlAccessCheck(ac_logged_in)) return;
5552         extract_token(addr, argbuf, 0, '|', sizeof addr);
5553
5554         if (CtdlIsMe(addr, sizeof addr)) {
5555                 cprintf("%d %s\n", CIT_OK, addr);
5556         }
5557         else {
5558                 cprintf("%d Not you.\n", ERROR + ILLEGAL_VALUE);
5559         }
5560
5561 }
5562
5563
5564 /*****************************************************************************/
5565 /*                      MODULE INITIALIZATION STUFF                          */
5566 /*****************************************************************************/
5567 void SetMessageDebugEnabled(const int n)
5568 {
5569         MessageDebugEnabled = n;
5570 }
5571 CTDL_MODULE_INIT(msgbase)
5572 {
5573         if (!threading) {
5574                 CtdlRegisterDebugFlagHook(HKEY("messages"), SetMessageDebugEnabled, &MessageDebugEnabled);
5575
5576                 CtdlRegisterProtoHook(cmd_msgs, "MSGS", "Output a list of messages in the current room");
5577                 CtdlRegisterProtoHook(cmd_msg0, "MSG0", "Output a message in plain text format");
5578                 CtdlRegisterProtoHook(cmd_msg2, "MSG2", "Output a message in RFC822 format");
5579                 CtdlRegisterProtoHook(cmd_msg3, "MSG3", "Output a message in raw format (deprecated)");
5580                 CtdlRegisterProtoHook(cmd_msg4, "MSG4", "Output a message in the client's preferred format");
5581                 CtdlRegisterProtoHook(cmd_msgp, "MSGP", "Select preferred format for MSG4 output");
5582                 CtdlRegisterProtoHook(cmd_opna, "OPNA", "Open an attachment for download");
5583                 CtdlRegisterProtoHook(cmd_dlat, "DLAT", "Download an attachment");
5584                 CtdlRegisterProtoHook(cmd_ent0, "ENT0", "Enter a message");
5585                 CtdlRegisterProtoHook(cmd_dele, "DELE", "Delete a message");
5586                 CtdlRegisterProtoHook(cmd_move, "MOVE", "Move or copy a message to another room");
5587                 CtdlRegisterProtoHook(cmd_isme, "ISME", "Determine whether an email address belongs to a user");
5588         }
5589
5590         /* return our Subversion id for the Log */
5591         return "msgbase";
5592 }