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 #include <libcitadel.h>
  42 #include "citadel.h"
  43 #include "server.h"
  44 #include "serv_extensions.h"
  45 #include "database.h"
  46 #include "msgbase.h"
  47 #include "support.h"
  48 #include "sysdep_decls.h"
  49 #include "citserver.h"
  50 #include "room_ops.h"
  51 #include "user_ops.h"
  52 #include "file_ops.h"
  53 #include "config.h"
  54 #include "control.h"
  55 #include "genstamp.h"
  56 #include "internet_addressing.h"
  57 #include "euidindex.h"
  58 #include "journaling.h"
  59 #include "citadel_dirs.h"
  60 #include "clientsocket.h"
  61 #include "threads.h"
  62
  63 #include "ctdl_module.h"
  64
  65 long config_msgnum;
  66 struct addresses_to_be_filed *atbf = NULL;
  67
  68 /* This temp file holds the queue of operations for AdjRefCount() */
  69 static FILE *arcfp = NULL;
  70
  71 /*
  72  * These are the four-character field headers we use when outputting
  73  * messages in Citadel format (as opposed to RFC822 format).
  74  */
  75 char *msgkeys[] = {
  76         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  77         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  78         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  79         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  80         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  81         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  82         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  83         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  84         NULL,
  85         "from",
  86         NULL, NULL, NULL,
  87         "exti",
  88         "rfca",
  89         NULL,
  90         "hnod",
  91         "msgn",
  92         "jrnl",
  93         NULL,
  94         "list",
  95         "text",
  96         "node",
  97         "room",
  98         "path",
  99         NULL,
 100         "rcpt",
 101         "spec",
 102         "time",
 103         "subj",
 104         NULL,
 105         "wefw",
 106         NULL,
 107         "cccc",
 108         NULL
 109 };
 110
 111 /*
 112  * This function is self explanatory.
 113  * (What can I say, I'm in a weird mood today...)
 114  */
 115 void remove_any_whitespace_to_the_left_or_right_of_at_symbol(char *name)
 116 {
 117         int i;
 118
 119         for (i = 0; i < strlen(name); ++i) {
 120                 if (name[i] == '@') {
 121                         while (isspace(name[i - 1]) && i > 0) {
 122                                 strcpy(&name[i - 1], &name[i]);
 123                                 --i;
 124                         }
 125                         while (isspace(name[i + 1])) {
 126                                 strcpy(&name[i + 1], &name[i + 2]);
 127                         }
 128                 }
 129         }
 130 }
 131
 132
 133 /*
 134  * Aliasing for network mail.
 135  * (Error messages have been commented out, because this is a server.)
 136  */
 137 int alias(char *name)
 138 {                               /* process alias and routing info for mail */
 139         FILE *fp;
 140         int a, i;
 141         char aaa[SIZ], bbb[SIZ];
 142         char *ignetcfg = NULL;
 143         char *ignetmap = NULL;
 144         int at = 0;
 145         char node[64];
 146         char testnode[64];
 147         char buf[SIZ];
 148
 149         char original_name[256];
 150         safestrncpy(original_name, name, sizeof original_name);
 151
 152         striplt(name);
 153         remove_any_whitespace_to_the_left_or_right_of_at_symbol(name);
 154         stripallbut(name, '<', '>');
 155
 156         fp = fopen(file_mail_aliases, "r");
 157         if (fp == NULL) {
 158                 fp = fopen("/dev/null", "r");
 159         }
 160         if (fp == NULL) {
 161                 return (MES_ERROR);
 162         }
 163         strcpy(aaa, "");
 164         strcpy(bbb, "");
 165         while (fgets(aaa, sizeof aaa, fp) != NULL) {
 166                 while (isspace(name[0]))
 167                         strcpy(name, &name[1]);
 168                 aaa[strlen(aaa) - 1] = 0;
 169                 strcpy(bbb, "");
 170                 for (a = 0; a < strlen(aaa); ++a) {
 171                         if (aaa[a] == ',') {
 172                                 strcpy(bbb, &aaa[a + 1]);
 173                                 aaa[a] = 0;
 174                         }
 175                 }
 176                 if (!strcasecmp(name, aaa))
 177                         strcpy(name, bbb);
 178         }
 179         fclose(fp);
 180
 181         /* Hit the Global Address Book */
 182         if (CtdlDirectoryLookup(aaa, name, sizeof aaa) == 0) {
 183                 strcpy(name, aaa);
 184         }
 185
 186         if (strcasecmp(original_name, name)) {
 187                 syslog(LOG_INFO, "%s is being forwarded to %s\n", original_name, name);
 188         }
 189
 190         /* Change "user @ xxx" to "user" if xxx is an alias for this host */
 191         for (a=0; a<strlen(name); ++a) {
 192                 if (name[a] == '@') {
 193                         if (CtdlHostAlias(&name[a+1]) == hostalias_localhost) {
 194                                 name[a] = 0;
 195                                 syslog(LOG_INFO, "Changed to <%s>\n", name);
 196                         }
 197                 }
 198         }
 199
 200         /* determine local or remote type, see citadel.h */
 201         at = haschar(name, '@');
 202         if (at == 0) return(MES_LOCAL);         /* no @'s - local address */
 203         if (at > 1) return(MES_ERROR);          /* >1 @'s - invalid address */
 204         remove_any_whitespace_to_the_left_or_right_of_at_symbol(name);
 205
 206         /* figure out the delivery mode */
 207         extract_token(node, name, 1, '@', sizeof node);
 208
 209         /* If there are one or more dots in the nodename, we assume that it
 210          * is an FQDN and will attempt SMTP delivery to the Internet.
 211          */
 212         if (haschar(node, '.') > 0) {
 213                 return(MES_INTERNET);
 214         }
 215
 216         /* Otherwise we look in the IGnet maps for a valid Citadel node.
 217          * Try directly-connected nodes first...
 218          */
 219         ignetcfg = CtdlGetSysConfig(IGNETCFG);
 220         for (i=0; i<num_tokens(ignetcfg, '\n'); ++i) {
 221                 extract_token(buf, ignetcfg, i, '\n', sizeof buf);
 222                 extract_token(testnode, buf, 0, '|', sizeof testnode);
 223                 if (!strcasecmp(node, testnode)) {
 224                         free(ignetcfg);
 225                         return(MES_IGNET);
 226                 }
 227         }
 228         free(ignetcfg);
 229
 230         /*
 231          * Then try nodes that are two or more hops away.
 232          */
 233         ignetmap = CtdlGetSysConfig(IGNETMAP);
 234         for (i=0; i<num_tokens(ignetmap, '\n'); ++i) {
 235                 extract_token(buf, ignetmap, i, '\n', sizeof buf);
 236                 extract_token(testnode, buf, 0, '|', sizeof testnode);
 237                 if (!strcasecmp(node, testnode)) {
 238                         free(ignetmap);
 239                         return(MES_IGNET);
 240                 }
 241         }
 242         free(ignetmap);
 243
 244         /* If we get to this point it's an invalid node name */
 245         return (MES_ERROR);
 246 }
 247
 248
 249 /*
 250  * Back end for the MSGS command: output message number only.
 251  */
 252 void simple_listing(long msgnum, void *userdata)
 253 {
 254         cprintf("%ld\n", msgnum);
 255 }
 256
 257
 258
 259 /*
 260  * Back end for the MSGS command: output header summary.
 261  */
 262 void headers_listing(long msgnum, void *userdata)
 263 {
 264         struct CtdlMessage *msg;
 265
 266         msg = CtdlFetchMessage(msgnum, 0);
 267         if (msg == NULL) {
 268                 cprintf("%ld|0|||||\n", msgnum);
 269                 return;
 270         }
 271
 272         cprintf("%ld|%s|%s|%s|%s|%s|\n",
 273                 msgnum,
 274                 (msg->cm_fields['T'] ? msg->cm_fields['T'] : "0"),
 275                 (msg->cm_fields['A'] ? msg->cm_fields['A'] : ""),
 276                 (msg->cm_fields['N'] ? msg->cm_fields['N'] : ""),
 277                 (msg->cm_fields['F'] ? msg->cm_fields['F'] : ""),
 278                 (msg->cm_fields['U'] ? msg->cm_fields['U'] : "")
 279         );
 280         CtdlFreeMessage(msg);
 281 }
 282
 283 /*
 284  * Back end for the MSGS command: output EUID header.
 285  */
 286 void headers_euid(long msgnum, void *userdata)
 287 {
 288         struct CtdlMessage *msg;
 289
 290         msg = CtdlFetchMessage(msgnum, 0);
 291         if (msg == NULL) {
 292                 cprintf("%ld||\n", msgnum);
 293                 return;
 294         }
 295
 296         cprintf("%ld|%s|%s\n",
 297                 msgnum,
 298                 (msg->cm_fields['E'] ? msg->cm_fields['E'] : ""),
 299                 (msg->cm_fields['T'] ? msg->cm_fields['T'] : "0"));
 300         CtdlFreeMessage(msg);
 301 }
 302
 303
 304
 305
 306
 307 /* Determine if a given message matches the fields in a message template.
 308  * Return 0 for a successful match.
 309  */
 310 int CtdlMsgCmp(struct CtdlMessage *msg, struct CtdlMessage *template) {
 311         int i;
 312
 313         /* If there aren't any fields in the template, all messages will
 314          * match.
 315          */
 316         if (template == NULL) return(0);
 317
 318         /* Null messages are bogus. */
 319         if (msg == NULL) return(1);
 320
 321         for (i='A'; i<='Z'; ++i) {
 322                 if (template->cm_fields[i] != NULL) {
 323                         if (msg->cm_fields[i] == NULL) {
 324                                 /* Considered equal if temmplate is empty string */
 325                                 if (IsEmptyStr(template->cm_fields[i])) continue;
 326                                 return 1;
 327                         }
 328                         if (strcasecmp(msg->cm_fields[i],
 329                                 template->cm_fields[i])) return 1;
 330                 }
 331         }
 332
 333         /* All compares succeeded: we have a match! */
 334         return 0;
 335 }
 336
 337
 338
 339 /*
 340  * Retrieve the "seen" message list for the current room.
 341  */
 342 void CtdlGetSeen(char *buf, int which_set) {
 343         visit vbuf;
 344
 345         /* Learn about the user and room in question */
 346         CtdlGetRelationship(&vbuf, &CC->user, &CC->room);
 347
 348         if (which_set == ctdlsetseen_seen)
 349                 safestrncpy(buf, vbuf.v_seen, SIZ);
 350         if (which_set == ctdlsetseen_answered)
 351                 safestrncpy(buf, vbuf.v_answered, SIZ);
 352 }
 353
 354
 355
 356 /*
 357  * Manipulate the "seen msgs" string (or other message set strings)
 358  */
 359 void CtdlSetSeen(long *target_msgnums, int num_target_msgnums,
 360                 int target_setting, int which_set,
 361                 struct ctdluser *which_user, struct ctdlroom *which_room) {
 362         struct cdbdata *cdbfr;
 363         int i, k;
 364         int is_seen = 0;
 365         int was_seen = 0;
 366         long lo = (-1L);
 367         long hi = (-1L);
 368         visit vbuf;
 369         long *msglist;
 370         int num_msgs = 0;
 371         StrBuf *vset;
 372         StrBuf *setstr;
 373         StrBuf *lostr;
 374         StrBuf *histr;
 375         const char *pvset;
 376         char *is_set;   /* actually an array of booleans */
 377
 378         /* Don't bother doing *anything* if we were passed a list of zero messages */
 379         if (num_target_msgnums < 1) {
 380                 return;
 381         }
 382
 383         /* If no room was specified, we go with the current room. */
 384         if (!which_room) {
 385                 which_room = &CC->room;
 386         }
 387
 388         /* If no user was specified, we go with the current user. */
 389         if (!which_user) {
 390                 which_user = &CC->user;
 391         }
 392
 393         syslog(LOG_DEBUG, "CtdlSetSeen(%d msgs starting with %ld, %s, %d) in <%s>\n",
 394                 num_target_msgnums, target_msgnums[0],
 395                 (target_setting ? "SET" : "CLEAR"),
 396                 which_set,
 397                 which_room->QRname);
 398
 399         /* Learn about the user and room in question */
 400         CtdlGetRelationship(&vbuf, which_user, which_room);
 401
 402         /* Load the message list */
 403         cdbfr = cdb_fetch(CDB_MSGLISTS, &which_room->QRnumber, sizeof(long));
 404         if (cdbfr != NULL) {
 405                 msglist = (long *) cdbfr->ptr;
 406                 cdbfr->ptr = NULL;      /* CtdlSetSeen() now owns this memory */
 407                 num_msgs = cdbfr->len / sizeof(long);
 408                 cdb_free(cdbfr);
 409         } else {
 410                 return; /* No messages at all?  No further action. */
 411         }
 412
 413         is_set = malloc(num_msgs * sizeof(char));
 414         memset(is_set, 0, (num_msgs * sizeof(char)) );
 415
 416         /* Decide which message set we're manipulating */
 417         switch(which_set) {
 418         case ctdlsetseen_seen:
 419                 vset = NewStrBufPlain(vbuf.v_seen, -1);
 420                 break;
 421         case ctdlsetseen_answered:
 422                 vset = NewStrBufPlain(vbuf.v_answered, -1);
 423                 break;
 424         default:
 425                 vset = NewStrBuf();
 426         }
 427
 428
 429 #if 0   /* This is a special diagnostic section.  Do not allow it to run during normal operation. */
 430         syslog(LOG_DEBUG, "There are %d messages in the room.\n", num_msgs);
 431         for (i=0; i<num_msgs; ++i) {
 432                 if ((i > 0) && (msglist[i] <= msglist[i-1])) abort();
 433         }
 434         syslog(LOG_DEBUG, "We are twiddling %d of them.\n", num_target_msgnums);
 435         for (k=0; k<num_target_msgnums; ++k) {
 436                 if ((k > 0) && (target_msgnums[k] <= target_msgnums[k-1])) abort();
 437         }
 438 #endif
 439
 440         syslog(LOG_DEBUG, "before update: %s\n", ChrPtr(vset));
 441
 442         /* Translate the existing sequence set into an array of booleans */
 443         setstr = NewStrBuf();
 444         lostr = NewStrBuf();
 445         histr = NewStrBuf();
 446         pvset = NULL;
 447         while (StrBufExtract_NextToken(setstr, vset, &pvset, ',') >= 0) {
 448
 449                 StrBufExtract_token(lostr, setstr, 0, ':');
 450                 if (StrBufNum_tokens(setstr, ':') >= 2) {
 451                         StrBufExtract_token(histr, setstr, 1, ':');
 452                 }
 453                 else {
 454                         FlushStrBuf(histr);
 455                         StrBufAppendBuf(histr, lostr, 0);
 456                 }
 457                 lo = StrTol(lostr);
 458                 if (!strcmp(ChrPtr(histr), "*")) {
 459                         hi = LONG_MAX;
 460                 }
 461                 else {
 462                         hi = StrTol(histr);
 463                 }
 464
 465                 for (i = 0; i < num_msgs; ++i) {
 466                         if ((msglist[i] >= lo) && (msglist[i] <= hi)) {
 467                                 is_set[i] = 1;
 468                         }
 469                 }
 470         }
 471         FreeStrBuf(&setstr);
 472         FreeStrBuf(&lostr);
 473         FreeStrBuf(&histr);
 474
 475
 476         /* Now translate the array of booleans back into a sequence set */
 477         FlushStrBuf(vset);
 478         was_seen = 0;
 479         lo = (-1);
 480         hi = (-1);
 481
 482         for (i=0; i<num_msgs; ++i) {
 483                 is_seen = is_set[i];
 484
 485                 /* Apply changes */
 486                 for (k=0; k<num_target_msgnums; ++k) {
 487                         if (msglist[i] == target_msgnums[k]) {
 488                                 is_seen = target_setting;
 489                         }
 490                 }
 491
 492                 if ((was_seen == 0) && (is_seen == 1)) {
 493                         lo = msglist[i];
 494                 }
 495                 else if ((was_seen == 1) && (is_seen == 0)) {
 496                         hi = msglist[i-1];
 497
 498                         if (StrLength(vset) > 0) {
 499                                 StrBufAppendBufPlain(vset, HKEY(","), 0);
 500                         }
 501                         if (lo == hi) {
 502                                 StrBufAppendPrintf(vset, "%ld", hi);
 503                         }
 504                         else {
 505                                 StrBufAppendPrintf(vset, "%ld:%ld", lo, hi);
 506                         }
 507                 }
 508
 509                 if ((is_seen) && (i == num_msgs - 1)) {
 510                         if (StrLength(vset) > 0) {
 511                                 StrBufAppendBufPlain(vset, HKEY(","), 0);
 512                         }
 513                         if ((i==0) || (was_seen == 0)) {
 514                                 StrBufAppendPrintf(vset, "%ld", msglist[i]);
 515                         }
 516                         else {
 517                                 StrBufAppendPrintf(vset, "%ld:%ld", lo, msglist[i]);
 518                         }
 519                 }
 520
 521                 was_seen = is_seen;
 522         }
 523
 524         /*
 525          * We will have to stuff this string back into a 4096 byte buffer, so if it's
 526          * larger than that now, truncate it by removing tokens from the beginning.
 527          * The limit of 100 iterations is there to prevent an infinite loop in case
 528          * something unexpected happens.
 529          */
 530         int number_of_truncations = 0;
 531         while ( (StrLength(vset) > SIZ) && (number_of_truncations < 100) ) {
 532                 StrBufRemove_token(vset, 0, ',');
 533                 ++number_of_truncations;
 534         }
 535
 536         /*
 537          * If we're truncating the sequence set of messages marked with the 'seen' flag,
 538          * we want the earliest messages (the truncated ones) to be marked, not unmarked.
 539          * Otherwise messages at the beginning will suddenly appear to be 'unseen'.
 540          */
 541         if ( (which_set == ctdlsetseen_seen) && (number_of_truncations > 0) ) {
 542                 StrBuf *first_tok;
 543                 first_tok = NewStrBuf();
 544                 StrBufExtract_token(first_tok, vset, 0, ',');
 545                 StrBufRemove_token(vset, 0, ',');
 546
 547                 if (StrBufNum_tokens(first_tok, ':') > 1) {
 548                         StrBufRemove_token(first_tok, 0, ':');
 549                 }
 550
 551                 StrBuf *new_set;
 552                 new_set = NewStrBuf();
 553                 StrBufAppendBufPlain(new_set, HKEY("1:"), 0);
 554                 StrBufAppendBuf(new_set, first_tok, 0);
 555                 StrBufAppendBufPlain(new_set, HKEY(":"), 0);
 556                 StrBufAppendBuf(new_set, vset, 0);
 557
 558                 FreeStrBuf(&vset);
 559                 FreeStrBuf(&first_tok);
 560                 vset = new_set;
 561         }
 562
 563         syslog(LOG_DEBUG, " after update: %s\n", ChrPtr(vset));
 564
 565         /* Decide which message set we're manipulating */
 566         switch (which_set) {
 567                 case ctdlsetseen_seen:
 568                         safestrncpy(vbuf.v_seen, ChrPtr(vset), sizeof vbuf.v_seen);
 569                         break;
 570                 case ctdlsetseen_answered:
 571                         safestrncpy(vbuf.v_answered, ChrPtr(vset), sizeof vbuf.v_answered);
 572                         break;
 573         }
 574
 575         free(is_set);
 576         free(msglist);
 577         CtdlSetRelationship(&vbuf, which_user, which_room);
 578         FreeStrBuf(&vset);
 579 }
 580
 581
 582 /*
 583  * API function to perform an operation for each qualifying message in the
 584  * current room.  (Returns the number of messages processed.)
 585  */
 586 int CtdlForEachMessage(int mode, long ref, char *search_string,
 587                         char *content_type,
 588                         struct CtdlMessage *compare,
 589                         ForEachMsgCallback CallBack,
 590                         void *userdata)
 591 {
 592
 593         int a, i, j;
 594         visit vbuf;
 595         struct cdbdata *cdbfr;
 596         long *msglist = NULL;
 597         int num_msgs = 0;
 598         int num_processed = 0;
 599         long thismsg;
 600         struct MetaData smi;
 601         struct CtdlMessage *msg = NULL;
 602         int is_seen = 0;
 603         long lastold = 0L;
 604         int printed_lastold = 0;
 605         int num_search_msgs = 0;
 606         long *search_msgs = NULL;
 607         regex_t re;
 608         int need_to_free_re = 0;
 609         regmatch_t pm;
 610
 611         if ((content_type) && (!IsEmptyStr(content_type))) {
 612                 regcomp(&re, content_type, 0);
 613                 need_to_free_re = 1;
 614         }
 615
 616         /* Learn about the user and room in question */
 617         CtdlGetUser(&CC->user, CC->curr_user);
 618         CtdlGetRelationship(&vbuf, &CC->user, &CC->room);
 619
 620         /* Load the message list */
 621         cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
 622         if (cdbfr == NULL) {
 623                 if (need_to_free_re) regfree(&re);
 624                 return 0;       /* No messages at all?  No further action. */
 625         }
 626
 627         msglist = (long *) cdbfr->ptr;
 628         num_msgs = cdbfr->len / sizeof(long);
 629
 630         cdbfr->ptr = NULL;      /* clear this so that cdb_free() doesn't free it */
 631         cdb_free(cdbfr);        /* we own this memory now */
 632
 633         /*
 634          * Now begin the traversal.
 635          */
 636         if (num_msgs > 0) for (a = 0; a < num_msgs; ++a) {
 637
 638                 /* If the caller is looking for a specific MIME type, filter
 639                  * out all messages which are not of the type requested.
 640                  */
 641                 if ((content_type != NULL) && (!IsEmptyStr(content_type))) {
 642
 643                         /* This call to GetMetaData() sits inside this loop
 644                          * so that we only do the extra database read per msg
 645                          * if we need to.  Doing the extra read all the time
 646                          * really kills the server.  If we ever need to use
 647                          * metadata for another search criterion, we need to
 648                          * move the read somewhere else -- but still be smart
 649                          * enough to only do the read if the caller has
 650                          * specified something that will need it.
 651                          */
 652                         GetMetaData(&smi, msglist[a]);
 653
 654                         /* if (strcasecmp(smi.meta_content_type, content_type)) { old non-regex way */
 655                         if (regexec(&re, smi.meta_content_type, 1, &pm, 0) != 0) {
 656                                 msglist[a] = 0L;
 657                         }
 658                 }
 659         }
 660
 661         num_msgs = sort_msglist(msglist, num_msgs);
 662
 663         /* If a template was supplied, filter out the messages which
 664          * don't match.  (This could induce some delays!)
 665          */
 666         if (num_msgs > 0) {
 667                 if (compare != NULL) {
 668                         for (a = 0; a < num_msgs; ++a) {
 669                                 msg = CtdlFetchMessage(msglist[a], 1);
 670                                 if (msg != NULL) {
 671                                         if (CtdlMsgCmp(msg, compare)) {
 672                                                 msglist[a] = 0L;
 673                                         }
 674                                         CtdlFreeMessage(msg);
 675                                 }
 676                         }
 677                 }
 678         }
 679
 680         /* If a search string was specified, get a message list from
 681          * the full text index and remove messages which aren't on both
 682          * lists.
 683          *
 684          * How this works:
 685          * Since the lists are sorted and strictly ascending, and the
 686          * output list is guaranteed to be shorter than or equal to the
 687          * input list, we overwrite the bottom of the input list.  This
 688          * eliminates the need to memmove big chunks of the list over and
 689          * over again.
 690          */
 691         if ( (num_msgs > 0) && (mode == MSGS_SEARCH) && (search_string) ) {
 692
 693                 /* Call search module via hook mechanism.
 694                  * NULL means use any search function available.
 695                  * otherwise replace with a char * to name of search routine
 696                  */
 697                 CtdlModuleDoSearch(&num_search_msgs, &search_msgs, search_string, "fulltext");
 698
 699                 if (num_search_msgs > 0) {
 700
 701                         int orig_num_msgs;
 702
 703                         orig_num_msgs = num_msgs;
 704                         num_msgs = 0;
 705                         for (i=0; i<orig_num_msgs; ++i) {
 706                                 for (j=0; j<num_search_msgs; ++j) {
 707                                         if (msglist[i] == search_msgs[j]) {
 708                                                 msglist[num_msgs++] = msglist[i];
 709                                         }
 710                                 }
 711                         }
 712                 }
 713                 else {
 714                         num_msgs = 0;   /* No messages qualify */
 715                 }
 716                 if (search_msgs != NULL) free(search_msgs);
 717
 718                 /* Now that we've purged messages which don't contain the search
 719                  * string, treat a MSGS_SEARCH just like a MSGS_ALL from this
 720                  * point on.
 721                  */
 722                 mode = MSGS_ALL;
 723         }
 724
 725         /*
 726          * Now iterate through the message list, according to the
 727          * criteria supplied by the caller.
 728          */
 729         if (num_msgs > 0)
 730                 for (a = 0; a < num_msgs; ++a) {
 731                         thismsg = msglist[a];
 732                         if (mode == MSGS_ALL) {
 733                                 is_seen = 0;
 734                         }
 735                         else {
 736                                 is_seen = is_msg_in_sequence_set(
 737                                                         vbuf.v_seen, thismsg);
 738                                 if (is_seen) lastold = thismsg;
 739                         }
 740                         if ((thismsg > 0L)
 741                             && (
 742
 743                                        (mode == MSGS_ALL)
 744                                        || ((mode == MSGS_OLD) && (is_seen))
 745                                        || ((mode == MSGS_NEW) && (!is_seen))
 746                                        || ((mode == MSGS_LAST) && (a >= (num_msgs - ref)))
 747                                    || ((mode == MSGS_FIRST) && (a < ref))
 748                                 || ((mode == MSGS_GT) && (thismsg > ref))
 749                                 || ((mode == MSGS_LT) && (thismsg < ref))
 750                                 || ((mode == MSGS_EQ) && (thismsg == ref))
 751                             )
 752                             ) {
 753                                 if ((mode == MSGS_NEW) && (CC->user.flags & US_LASTOLD) && (lastold > 0L) && (printed_lastold == 0) && (!is_seen)) {
 754                                         if (CallBack)
 755                                                 CallBack(lastold, userdata);
 756                                         printed_lastold = 1;
 757                                         ++num_processed;
 758                                 }
 759                                 if (CallBack) CallBack(thismsg, userdata);
 760                                 ++num_processed;
 761                         }
 762                 }
 763         if (need_to_free_re) regfree(&re);
 764
 765         /*
 766          * We cache the most recent msglist in order to do security checks later
 767          */
 768         if (CC->client_socket > 0) {
 769                 if (CC->cached_msglist != NULL) {
 770                         free(CC->cached_msglist);
 771                 }
 772                 CC->cached_msglist = msglist;
 773                 CC->cached_num_msgs = num_msgs;
 774         }
 775         else {
 776                 free(msglist);
 777         }
 778
 779         return num_processed;
 780 }
 781
 782
 783
 784 /*
 785  * cmd_msgs()  -  get list of message #'s in this room
 786  *              implements the MSGS server command using CtdlForEachMessage()
 787  */
 788 void cmd_msgs(char *cmdbuf)
 789 {
 790         int mode = 0;
 791         char which[16];
 792         char buf[256];
 793         char tfield[256];
 794         char tvalue[256];
 795         int cm_ref = 0;
 796         int i;
 797         int with_template = 0;
 798         struct CtdlMessage *template = NULL;
 799         char search_string[1024];
 800         ForEachMsgCallback CallBack;
 801
 802         if (CtdlAccessCheck(ac_logged_in_or_guest)) return;
 803
 804         extract_token(which, cmdbuf, 0, '|', sizeof which);
 805         cm_ref = extract_int(cmdbuf, 1);
 806         extract_token(search_string, cmdbuf, 1, '|', sizeof search_string);
 807         with_template = extract_int(cmdbuf, 2);
 808         switch (extract_int(cmdbuf, 3))
 809         {
 810         default:
 811         case MSG_HDRS_BRIEF:
 812                 CallBack = simple_listing;
 813                 break;
 814         case MSG_HDRS_ALL:
 815                 CallBack = headers_listing;
 816                 break;
 817         case MSG_HDRS_EUID:
 818                 CallBack = headers_euid;
 819                 break;
 820         }
 821
 822         strcat(which, "   ");
 823         if (!strncasecmp(which, "OLD", 3))
 824                 mode = MSGS_OLD;
 825         else if (!strncasecmp(which, "NEW", 3))
 826                 mode = MSGS_NEW;
 827         else if (!strncasecmp(which, "FIRST", 5))
 828                 mode = MSGS_FIRST;
 829         else if (!strncasecmp(which, "LAST", 4))
 830                 mode = MSGS_LAST;
 831         else if (!strncasecmp(which, "GT", 2))
 832                 mode = MSGS_GT;
 833         else if (!strncasecmp(which, "LT", 2))
 834                 mode = MSGS_LT;
 835         else if (!strncasecmp(which, "SEARCH", 6))
 836                 mode = MSGS_SEARCH;
 837         else
 838                 mode = MSGS_ALL;
 839
 840         if ( (mode == MSGS_SEARCH) && (!config.c_enable_fulltext) ) {
 841                 cprintf("%d Full text index is not enabled on this server.\n",
 842                         ERROR + CMD_NOT_SUPPORTED);
 843                 return;
 844         }
 845
 846         if (with_template) {
 847                 unbuffer_output();
 848                 cprintf("%d Send template then receive message list\n",
 849                         START_CHAT_MODE);
 850                 template = (struct CtdlMessage *)
 851                         malloc(sizeof(struct CtdlMessage));
 852                 memset(template, 0, sizeof(struct CtdlMessage));
 853                 template->cm_magic = CTDLMESSAGE_MAGIC;
 854                 template->cm_anon_type = MES_NORMAL;
 855
 856                 while(client_getln(buf, sizeof buf) >= 0 && strcmp(buf,"000")) {
 857                         extract_token(tfield, buf, 0, '|', sizeof tfield);
 858                         extract_token(tvalue, buf, 1, '|', sizeof tvalue);
 859                         for (i='A'; i<='Z'; ++i) if (msgkeys[i]!=NULL) {
 860                                 if (!strcasecmp(tfield, msgkeys[i])) {
 861                                         template->cm_fields[i] =
 862                                                 strdup(tvalue);
 863                                 }
 864                         }
 865                 }
 866                 buffer_output();
 867         }
 868         else {
 869                 cprintf("%d  \n", LISTING_FOLLOWS);
 870         }
 871
 872         CtdlForEachMessage(mode,
 873                            ( (mode == MSGS_SEARCH) ? 0 : cm_ref ),
 874                            ( (mode == MSGS_SEARCH) ? search_string : NULL ),
 875                            NULL,
 876                            template,
 877                            CallBack,
 878                            NULL);
 879         if (template != NULL) CtdlFreeMessage(template);
 880         cprintf("000\n");
 881 }
 882
 883
 884
 885
 886 /*
 887  * help_subst()  -  support routine for help file viewer
 888  */
 889 void help_subst(char *strbuf, char *source, char *dest)
 890 {
 891         char workbuf[SIZ];
 892         int p;
 893
 894         while (p = pattern2(strbuf, source), (p >= 0)) {
 895                 strcpy(workbuf, &strbuf[p + strlen(source)]);
 896                 strcpy(&strbuf[p], dest);
 897                 strcat(strbuf, workbuf);
 898         }
 899 }
 900
 901
 902 void do_help_subst(char *buffer)
 903 {
 904         char buf2[16];
 905
 906         help_subst(buffer, "^nodename", config.c_nodename);
 907         help_subst(buffer, "^humannode", config.c_humannode);
 908         help_subst(buffer, "^fqdn", config.c_fqdn);
 909         help_subst(buffer, "^username", CC->user.fullname);
 910         snprintf(buf2, sizeof buf2, "%ld", CC->user.usernum);
 911         help_subst(buffer, "^usernum", buf2);
 912         help_subst(buffer, "^sysadm", config.c_sysadm);
 913         help_subst(buffer, "^variantname", CITADEL);
 914         snprintf(buf2, sizeof buf2, "%d", config.c_maxsessions);
 915         help_subst(buffer, "^maxsessions", buf2);
 916         help_subst(buffer, "^bbsdir", ctdl_message_dir);
 917 }
 918
 919
 920
 921 /*
 922  * memfmout()  -  Citadel text formatter and paginator.
 923  *           Although the original purpose of this routine was to format
 924  *           text to the reader's screen width, all we're really using it
 925  *           for here is to format text out to 80 columns before sending it
 926  *           to the client.  The client software may reformat it again.
 927  */
 928 void memfmout(
 929         char *mptr,             /* where are we going to get our text from? */
 930         const char *nl          /* string to terminate lines with */
 931 ) {
 932         int column = 0;
 933         unsigned char ch = 0;
 934         char outbuf[1024];
 935         int len = 0;
 936         int nllen = 0;
 937
 938         if (!mptr) return;
 939         nllen = strlen(nl);
 940         while (ch=*(mptr++), ch != 0) {
 941
 942                 if (ch == '\n') {
 943                         if (client_write(outbuf, len) == -1)
 944                         {
 945                                 syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
 946                                 return;
 947                         }
 948                         len = 0;
 949                         if (client_write(nl, nllen) == -1)
 950                         {
 951                                 syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
 952                                 return;
 953                         }
 954                         column = 0;
 955                 }
 956                 else if (ch == '\r') {
 957                         /* Ignore carriage returns.  Newlines are always LF or CRLF but never CR. */
 958                 }
 959                 else if (isspace(ch)) {
 960                         if (column > 72) {              /* Beyond 72 columns, break on the next space */
 961                                 if (client_write(outbuf, len) == -1)
 962                                 {
 963                                         syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
 964                                         return;
 965                                 }
 966                                 len = 0;
 967                                 if (client_write(nl, nllen) == -1)
 968                                 {
 969                                         syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
 970                                         return;
 971                                 }
 972                                 column = 0;
 973                         }
 974                         else {
 975                                 outbuf[len++] = ch;
 976                                 ++column;
 977                         }
 978                 }
 979                 else {
 980                         outbuf[len++] = ch;
 981                         ++column;
 982                         if (column > 1000) {            /* Beyond 1000 columns, break anywhere */
 983                                 if (client_write(outbuf, len) == -1)
 984                                 {
 985                                         syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
 986                                         return;
 987                                 }
 988                                 len = 0;
 989                                 if (client_write(nl, nllen) == -1)
 990                                 {
 991                                         syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
 992                                         return;
 993                                 }
 994                                 column = 0;
 995                         }
 996                 }
 997         }
 998         if (len) {
 999                 if (client_write(outbuf, len) == -1)
1000                 {
1001                         syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1002                         return;
1003                 }
1004                 len = 0;
1005                 client_write(nl, nllen);
1006                 column = 0;
1007         }
1008 }
1009
1010
1011
1012 /*
1013  * Callback function for mime parser that simply lists the part
1014  */
1015 void list_this_part(char *name, char *filename, char *partnum, char *disp,
1016                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1017                     char *cbid, void *cbuserdata)
1018 {
1019         struct ma_info *ma;
1020
1021         ma = (struct ma_info *)cbuserdata;
1022         if (ma->is_ma == 0) {
1023                 cprintf("part=%s|%s|%s|%s|%s|%ld|%s|%s\n",
1024                         name,
1025                         filename,
1026                         partnum,
1027                         disp,
1028                         cbtype,
1029                         (long)length,
1030                         cbid,
1031                         cbcharset);
1032         }
1033 }
1034
1035 /*
1036  * Callback function for multipart prefix
1037  */
1038 void list_this_pref(char *name, char *filename, char *partnum, char *disp,
1039                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1040                     char *cbid, void *cbuserdata)
1041 {
1042         struct ma_info *ma;
1043
1044         ma = (struct ma_info *)cbuserdata;
1045         if (!strcasecmp(cbtype, "multipart/alternative")) {
1046                 ++ma->is_ma;
1047         }
1048
1049         if (ma->is_ma == 0) {
1050                 cprintf("pref=%s|%s\n", partnum, cbtype);
1051         }
1052 }
1053
1054 /*
1055  * Callback function for multipart sufffix
1056  */
1057 void list_this_suff(char *name, char *filename, char *partnum, char *disp,
1058                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1059                     char *cbid, void *cbuserdata)
1060 {
1061         struct ma_info *ma;
1062
1063         ma = (struct ma_info *)cbuserdata;
1064         if (ma->is_ma == 0) {
1065                 cprintf("suff=%s|%s\n", partnum, cbtype);
1066         }
1067         if (!strcasecmp(cbtype, "multipart/alternative")) {
1068                 --ma->is_ma;
1069         }
1070 }
1071
1072
1073 /*
1074  * Callback function for mime parser that opens a section for downloading
1075  */
1076 void mime_download(char *name, char *filename, char *partnum, char *disp,
1077                    void *content, char *cbtype, char *cbcharset, size_t length,
1078                    char *encoding, char *cbid, void *cbuserdata)
1079 {
1080         int rv = 0;
1081         CitContext *CCC = MyContext();
1082
1083         /* Silently go away if there's already a download open. */
1084         if (CCC->download_fp != NULL)
1085                 return;
1086
1087         if (
1088                 (!IsEmptyStr(partnum) && (!strcasecmp(CCC->download_desired_section, partnum)))
1089         ||      (!IsEmptyStr(cbid) && (!strcasecmp(CCC->download_desired_section, cbid)))
1090         ) {
1091                 CCC->download_fp = tmpfile();
1092                 if (CCC->download_fp == NULL) {
1093                         syslog(LOG_EMERG, "mime_download(): Couldn't write: %s\n",
1094                                strerror(errno));
1095                         cprintf("%d cannot open temporary file: %s\n",
1096                                 ERROR + INTERNAL_ERROR, strerror(errno));
1097                         return;
1098                 }
1099
1100                 rv = fwrite(content, length, 1, CC->download_fp);
1101                 if (rv <= 0) {
1102                         syslog(LOG_EMERG, "mime_download(): Couldn't write: %s\n",
1103                                strerror(errno));
1104                         cprintf("%d unable to write tempfile.\n",
1105                                 ERROR + TOO_BIG);
1106                         fclose(CCC->download_fp);
1107                         CCC->download_fp = NULL;
1108                         return;
1109                 }
1110                 fflush(CCC->download_fp);
1111                 rewind(CCC->download_fp);
1112
1113                 OpenCmdResult(filename, cbtype);
1114         }
1115 }
1116
1117
1118
1119 /*
1120  * Callback function for mime parser that outputs a section all at once.
1121  * We can specify the desired section by part number *or* content-id.
1122  */
1123 void mime_spew_section(char *name, char *filename, char *partnum, char *disp,
1124                    void *content, char *cbtype, char *cbcharset, size_t length,
1125                    char *encoding, char *cbid, void *cbuserdata)
1126 {
1127         int *found_it = (int *)cbuserdata;
1128
1129         if (
1130                 (!IsEmptyStr(partnum) && (!strcasecmp(CC->download_desired_section, partnum)))
1131         ||      (!IsEmptyStr(cbid) && (!strcasecmp(CC->download_desired_section, cbid)))
1132         ) {
1133                 *found_it = 1;
1134                 cprintf("%d %d|-1|%s|%s|%s\n",
1135                         BINARY_FOLLOWS,
1136                         (int)length,
1137                         filename,
1138                         cbtype,
1139                         cbcharset
1140                 );
1141                 client_write(content, length);
1142         }
1143 }
1144
1145
1146 /*
1147  * Load a message from disk into memory.
1148  * This is used by CtdlOutputMsg() and other fetch functions.
1149  *
1150  * NOTE: Caller is responsible for freeing the returned CtdlMessage struct
1151  *       using the CtdlMessageFree() function.
1152  */
1153 struct CtdlMessage *CtdlFetchMessage(long msgnum, int with_body)
1154 {
1155         struct cdbdata *dmsgtext;
1156         struct CtdlMessage *ret = NULL;
1157         char *mptr;
1158         char *upper_bound;
1159         cit_uint8_t ch;
1160         cit_uint8_t field_header;
1161
1162         syslog(LOG_DEBUG, "CtdlFetchMessage(%ld, %d)\n", msgnum, with_body);
1163         dmsgtext = cdb_fetch(CDB_MSGMAIN, &msgnum, sizeof(long));
1164         if (dmsgtext == NULL) {
1165                 return NULL;
1166         }
1167         mptr = dmsgtext->ptr;
1168         upper_bound = mptr + dmsgtext->len;
1169
1170         /* Parse the three bytes that begin EVERY message on disk.
1171          * The first is always 0xFF, the on-disk magic number.
1172          * The second is the anonymous/public type byte.
1173          * The third is the format type byte (vari, fixed, or MIME).
1174          */
1175         ch = *mptr++;
1176         if (ch != 255) {
1177                 syslog(LOG_ERR, "Message %ld appears to be corrupted.\n", msgnum);
1178                 cdb_free(dmsgtext);
1179                 return NULL;
1180         }
1181         ret = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
1182         memset(ret, 0, sizeof(struct CtdlMessage));
1183
1184         ret->cm_magic = CTDLMESSAGE_MAGIC;
1185         ret->cm_anon_type = *mptr++;    /* Anon type byte */
1186         ret->cm_format_type = *mptr++;  /* Format type byte */
1187
1188         /*
1189          * The rest is zero or more arbitrary fields.  Load them in.
1190          * We're done when we encounter either a zero-length field or
1191          * have just processed the 'M' (message text) field.
1192          */
1193         do {
1194                 if (mptr >= upper_bound) {
1195                         break;
1196                 }
1197                 field_header = *mptr++;
1198                 ret->cm_fields[field_header] = strdup(mptr);
1199
1200                 while (*mptr++ != 0);   /* advance to next field */
1201
1202         } while ((mptr < upper_bound) && (field_header != 'M'));
1203
1204         cdb_free(dmsgtext);
1205
1206         /* Always make sure there's something in the msg text field.  If
1207          * it's NULL, the message text is most likely stored separately,
1208          * so go ahead and fetch that.  Failing that, just set a dummy
1209          * body so other code doesn't barf.
1210          */
1211         if ( (ret->cm_fields['M'] == NULL) && (with_body) ) {
1212                 dmsgtext = cdb_fetch(CDB_BIGMSGS, &msgnum, sizeof(long));
1213                 if (dmsgtext != NULL) {
1214                         ret->cm_fields['M'] = dmsgtext->ptr;
1215                         dmsgtext->ptr = NULL;
1216                         cdb_free(dmsgtext);
1217                 }
1218         }
1219         if (ret->cm_fields['M'] == NULL) {
1220                 ret->cm_fields['M'] = strdup("\r\n\r\n (no text)\r\n");
1221         }
1222
1223         /* Perform "before read" hooks (aborting if any return nonzero) */
1224         if (PerformMessageHooks(ret, EVT_BEFOREREAD) > 0) {
1225                 CtdlFreeMessage(ret);
1226                 return NULL;
1227         }
1228
1229         return (ret);
1230 }
1231
1232
1233 /*
1234  * Returns 1 if the supplied pointer points to a valid Citadel message.
1235  * If the pointer is NULL or the magic number check fails, returns 0.
1236  */
1237 int is_valid_message(struct CtdlMessage *msg) {
1238         if (msg == NULL)
1239                 return 0;
1240         if ((msg->cm_magic) != CTDLMESSAGE_MAGIC) {
1241                 syslog(LOG_WARNING, "is_valid_message() -- self-check failed\n");
1242                 return 0;
1243         }
1244         return 1;
1245 }
1246
1247 void CtdlFreeMessageContents(struct CtdlMessage *msg)
1248 {
1249         int i;
1250
1251         for (i = 0; i < 256; ++i)
1252                 if (msg->cm_fields[i] != NULL) {
1253                         free(msg->cm_fields[i]);
1254                 }
1255
1256         msg->cm_magic = 0;      /* just in case */
1257 }
1258 /*
1259  * 'Destructor' for struct CtdlMessage
1260  */
1261 void CtdlFreeMessage(struct CtdlMessage *msg)
1262 {
1263         if (is_valid_message(msg) == 0)
1264         {
1265                 if (msg != NULL) free (msg);
1266                 return;
1267         }
1268         CtdlFreeMessageContents(msg);
1269         free(msg);
1270 }
1271
1272
1273 /*
1274  * Pre callback function for multipart/alternative
1275  *
1276  * NOTE: this differs from the standard behavior for a reason.  Normally when
1277  *       displaying multipart/alternative you want to show the _last_ usable
1278  *       format in the message.  Here we show the _first_ one, because it's
1279  *       usually text/plain.  Since this set of functions is designed for text
1280  *       output to non-MIME-aware clients, this is the desired behavior.
1281  *
1282  */
1283 void fixed_output_pre(char *name, char *filename, char *partnum, char *disp,
1284                 void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1285                 char *cbid, void *cbuserdata)
1286 {
1287         struct ma_info *ma;
1288
1289         ma = (struct ma_info *)cbuserdata;
1290         syslog(LOG_DEBUG, "fixed_output_pre() type=<%s>\n", cbtype);
1291         if (!strcasecmp(cbtype, "multipart/alternative")) {
1292                 ++ma->is_ma;
1293                 ma->did_print = 0;
1294         }
1295         if (!strcasecmp(cbtype, "message/rfc822")) {
1296                 ++ma->freeze;
1297         }
1298 }
1299
1300 /*
1301  * Post callback function for multipart/alternative
1302  */
1303 void fixed_output_post(char *name, char *filename, char *partnum, char *disp,
1304                 void *content, char *cbtype, char *cbcharset, size_t length,
1305                 char *encoding, char *cbid, void *cbuserdata)
1306 {
1307         struct ma_info *ma;
1308
1309         ma = (struct ma_info *)cbuserdata;
1310         syslog(LOG_DEBUG, "fixed_output_post() type=<%s>\n", cbtype);
1311         if (!strcasecmp(cbtype, "multipart/alternative")) {
1312                 --ma->is_ma;
1313                 ma->did_print = 0;
1314         }
1315         if (!strcasecmp(cbtype, "message/rfc822")) {
1316                 --ma->freeze;
1317         }
1318 }
1319
1320 /*
1321  * Inline callback function for mime parser that wants to display text
1322  */
1323 void fixed_output(char *name, char *filename, char *partnum, char *disp,
1324                 void *content, char *cbtype, char *cbcharset, size_t length,
1325                 char *encoding, char *cbid, void *cbuserdata)
1326 {
1327         char *ptr;
1328         char *wptr;
1329         size_t wlen;
1330         struct ma_info *ma;
1331
1332         ma = (struct ma_info *)cbuserdata;
1333
1334         syslog(LOG_DEBUG,
1335                 "fixed_output() part %s: %s (%s) (%ld bytes)\n",
1336                 partnum, filename, cbtype, (long)length);
1337
1338         /*
1339          * If we're in the middle of a multipart/alternative scope and
1340          * we've already printed another section, skip this one.
1341          */
1342         if ( (ma->is_ma) && (ma->did_print) ) {
1343                 syslog(LOG_DEBUG, "Skipping part %s (%s)\n", partnum, cbtype);
1344                 return;
1345         }
1346         ma->did_print = 1;
1347
1348         if ( (!strcasecmp(cbtype, "text/plain"))
1349            || (IsEmptyStr(cbtype)) ) {
1350                 wptr = content;
1351                 if (length > 0) {
1352                         client_write(wptr, length);
1353                         if (wptr[length-1] != '\n') {
1354                                 cprintf("\n");
1355                         }
1356                 }
1357                 return;
1358         }
1359
1360         if (!strcasecmp(cbtype, "text/html")) {
1361                 ptr = html_to_ascii(content, length, 80, 0);
1362                 wlen = strlen(ptr);
1363                 client_write(ptr, wlen);
1364                 if ((wlen > 0) && (ptr[wlen-1] != '\n')) {
1365                         cprintf("\n");
1366                 }
1367                 free(ptr);
1368                 return;
1369         }
1370
1371         if (ma->use_fo_hooks) {
1372                 if (PerformFixedOutputHooks(cbtype, content, length)) {
1373                 /* above function returns nonzero if it handled the part */
1374                         return;
1375                 }
1376         }
1377
1378         if (strncasecmp(cbtype, "multipart/", 10)) {
1379                 cprintf("Part %s: %s (%s) (%ld bytes)\r\n",
1380                         partnum, filename, cbtype, (long)length);
1381                 return;
1382         }
1383 }
1384
1385 /*
1386  * The client is elegant and sophisticated and wants to be choosy about
1387  * MIME content types, so figure out which multipart/alternative part
1388  * we're going to send.
1389  *
1390  * We use a system of weights.  When we find a part that matches one of the
1391  * MIME types we've declared as preferential, we can store it in ma->chosen_part
1392  * and then set ma->chosen_pref to that MIME type's position in our preference
1393  * list.  If we then hit another match, we only replace the first match if
1394  * the preference value is lower.
1395  */
1396 void choose_preferred(char *name, char *filename, char *partnum, char *disp,
1397                 void *content, char *cbtype, char *cbcharset, size_t length,
1398                 char *encoding, char *cbid, void *cbuserdata)
1399 {
1400         char buf[1024];
1401         int i;
1402         struct ma_info *ma;
1403
1404         ma = (struct ma_info *)cbuserdata;
1405
1406         // NOTE: REMOVING THIS CONDITIONAL FIXES BUG 220
1407         //       http://bugzilla.citadel.org/show_bug.cgi?id=220
1408         // I don't know if there are any side effects!  Please TEST TEST TEST
1409         //if (ma->is_ma > 0) {
1410
1411         for (i=0; i<num_tokens(CC->preferred_formats, '|'); ++i) {
1412                 extract_token(buf, CC->preferred_formats, i, '|', sizeof buf);
1413                 if ( (!strcasecmp(buf, cbtype)) && (!ma->freeze) ) {
1414                         if (i < ma->chosen_pref) {
1415                                 syslog(LOG_DEBUG, "Setting chosen part: <%s>\n", partnum);
1416                                 safestrncpy(ma->chosen_part, partnum, sizeof ma->chosen_part);
1417                                 ma->chosen_pref = i;
1418                         }
1419                 }
1420         }
1421 }
1422
1423 /*
1424  * Now that we've chosen our preferred part, output it.
1425  */
1426 void output_preferred(char *name,
1427                       char *filename,
1428                       char *partnum,
1429                       char *disp,
1430                       void *content,
1431                       char *cbtype,
1432                       char *cbcharset,
1433                       size_t length,
1434                       char *encoding,
1435                       char *cbid,
1436                       void *cbuserdata)
1437 {
1438         int i;
1439         char buf[128];
1440         int add_newline = 0;
1441         char *text_content;
1442         struct ma_info *ma;
1443         char *decoded = NULL;
1444         size_t bytes_decoded;
1445         int rc = 0;
1446
1447         ma = (struct ma_info *)cbuserdata;
1448
1449         /* This is not the MIME part you're looking for... */
1450         if (strcasecmp(partnum, ma->chosen_part)) return;
1451
1452         /* If the content-type of this part is in our preferred formats
1453          * list, we can simply output it verbatim.
1454          */
1455         for (i=0; i<num_tokens(CC->preferred_formats, '|'); ++i) {
1456                 extract_token(buf, CC->preferred_formats, i, '|', sizeof buf);
1457                 if (!strcasecmp(buf, cbtype)) {
1458                         /* Yeah!  Go!  W00t!! */
1459                         if (ma->dont_decode == 0)
1460                                 rc = mime_decode_now (content,
1461                                                       length,
1462                                                       encoding,
1463                                                       &decoded,
1464                                                       &bytes_decoded);
1465                         if (rc < 0)
1466                                 break; /* Give us the chance, maybe theres another one. */
1467
1468                         if (rc == 0) text_content = (char *)content;
1469                         else {
1470                                 text_content = decoded;
1471                                 length = bytes_decoded;
1472                         }
1473
1474                         if (text_content[length-1] != '\n') {
1475                                 ++add_newline;
1476                         }
1477                         cprintf("Content-type: %s", cbtype);
1478                         if (!IsEmptyStr(cbcharset)) {
1479                                 cprintf("; charset=%s", cbcharset);
1480                         }
1481                         cprintf("\nContent-length: %d\n",
1482                                 (int)(length + add_newline) );
1483                         if (!IsEmptyStr(encoding)) {
1484                                 cprintf("Content-transfer-encoding: %s\n", encoding);
1485                         }
1486                         else {
1487                                 cprintf("Content-transfer-encoding: 7bit\n");
1488                         }
1489                         cprintf("X-Citadel-MSG4-Partnum: %s\n", partnum);
1490                         cprintf("\n");
1491                         if (client_write(text_content, length) == -1)
1492                         {
1493                                 syslog(LOG_ERR, "output_preferred(): aborting due to write failure.\n");
1494                                 return;
1495                         }
1496                         if (add_newline) cprintf("\n");
1497                         if (decoded != NULL) free(decoded);
1498                         return;
1499                 }
1500         }
1501
1502         /* No translations required or possible: output as text/plain */
1503         cprintf("Content-type: text/plain\n\n");
1504         rc = 0;
1505         if (ma->dont_decode == 0)
1506                 rc = mime_decode_now (content,
1507                                       length,
1508                                       encoding,
1509                                       &decoded,
1510                                       &bytes_decoded);
1511         if (rc < 0)
1512                 return; /* Give us the chance, maybe theres another one. */
1513
1514         if (rc == 0) text_content = (char *)content;
1515         else {
1516                 text_content = decoded;
1517                 length = bytes_decoded;
1518         }
1519
1520         fixed_output(name, filename, partnum, disp, text_content, cbtype, cbcharset,
1521                         length, encoding, cbid, cbuserdata);
1522         if (decoded != NULL) free(decoded);
1523 }
1524
1525
1526 struct encapmsg {
1527         char desired_section[64];
1528         char *msg;
1529         size_t msglen;
1530 };
1531
1532
1533 /*
1534  * Callback function for
1535  */
1536 void extract_encapsulated_message(char *name, char *filename, char *partnum, char *disp,
1537                    void *content, char *cbtype, char *cbcharset, size_t length,
1538                    char *encoding, char *cbid, void *cbuserdata)
1539 {
1540         struct encapmsg *encap;
1541
1542         encap = (struct encapmsg *)cbuserdata;
1543
1544         /* Only proceed if this is the desired section... */
1545         if (!strcasecmp(encap->desired_section, partnum)) {
1546                 encap->msglen = length;
1547                 encap->msg = malloc(length + 2);
1548                 memcpy(encap->msg, content, length);
1549                 return;
1550         }
1551 }
1552
1553
1554 /*
1555  * Determine whether the specified message exists in the cached_msglist
1556  * (This is a security check)
1557  */
1558 int check_cached_msglist(long msgnum) {
1559
1560         /* cases in which we skip the check */
1561         if (!CC) return om_ok;                                          /* not a session */
1562         if (CC->client_socket <= 0) return om_ok;                       /* not a client session */
1563         if (CC->cached_msglist == NULL) return om_access_denied;        /* no msglist fetched */
1564         if (CC->cached_num_msgs == 0) return om_access_denied;          /* nothing to check */
1565
1566
1567         /* Do a binary search within the cached_msglist for the requested msgnum */
1568         int min = 0;
1569         int max = (CC->cached_num_msgs - 1);
1570
1571         while (max >= min) {
1572                 int middle = min + (max-min) / 2 ;
1573                 if (msgnum == CC->cached_msglist[middle]) {
1574                         return om_ok;
1575                 }
1576                 if (msgnum > CC->cached_msglist[middle]) {
1577                         min = middle + 1;
1578                 }
1579                 else {
1580                         max = middle - 1;
1581                 }
1582         }
1583
1584         return om_access_denied;
1585 }
1586
1587
1588 /*
1589  * Determine whether the currently logged in session has permission to read
1590  * messages in the current room.
1591  */
1592 int CtdlDoIHavePermissionToReadMessagesInThisRoom(void) {
1593         if (    (!(CC->logged_in))
1594                 && (!(CC->internal_pgm))
1595                 && (!config.c_guest_logins)
1596         ) {
1597                 return(om_not_logged_in);
1598         }
1599         return(om_ok);
1600 }
1601
1602
1603 /*
1604  * Get a message off disk.  (returns om_* values found in msgbase.h)
1605  *
1606  */
1607 int CtdlOutputMsg(long msg_num,         /* message number (local) to fetch */
1608                   int mode,             /* how would you like that message? */
1609                   int headers_only,     /* eschew the message body? */
1610                   int do_proto,         /* do Citadel protocol responses? */
1611                   int crlf,             /* Use CRLF newlines instead of LF? */
1612                   char *section,        /* NULL or a message/rfc822 section */
1613                   int flags             /* various flags; see msgbase.h */
1614 ) {
1615         struct CtdlMessage *TheMessage = NULL;
1616         int retcode = om_no_such_msg;
1617         struct encapmsg encap;
1618         int r;
1619
1620         syslog(LOG_DEBUG, "CtdlOutputMsg(msgnum=%ld, mode=%d, section=%s)\n",
1621                 msg_num, mode,
1622                 (section ? section : "<>")
1623         );
1624
1625         r = CtdlDoIHavePermissionToReadMessagesInThisRoom();
1626         if (r != om_ok) {
1627                 if (do_proto) {
1628                         if (r == om_not_logged_in) {
1629                                 cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN);
1630                         }
1631                         else {
1632                                 cprintf("%d An unknown error has occurred.\n", ERROR);
1633                         }
1634                 }
1635                 return(r);
1636         }
1637
1638         /*
1639          * Check to make sure the message is actually IN this room
1640          */
1641         r = check_cached_msglist(msg_num);
1642         if (r == om_access_denied) {
1643                 /* Not in the cache?  We get ONE shot to check it again. */
1644                 CtdlForEachMessage(MSGS_ALL, 0L, NULL, NULL, NULL, NULL, NULL);
1645                 r = check_cached_msglist(msg_num);
1646         }
1647         if (r != om_ok) {
1648                 syslog(LOG_DEBUG, "Security check fail: message %ld is not in %s\n",
1649                         msg_num, CC->room.QRname
1650                 );
1651                 if (do_proto) {
1652                         if (r == om_access_denied) {
1653                                 cprintf("%d message %ld was not found in this room\n",
1654                                         ERROR + HIGHER_ACCESS_REQUIRED,
1655                                         msg_num
1656                                 );
1657                         }
1658                 }
1659                 return(r);
1660         }
1661
1662         /*
1663          * Fetch the message from disk.  If we're in HEADERS_FAST mode,
1664          * request that we don't even bother loading the body into memory.
1665          */
1666         if (headers_only == HEADERS_FAST) {
1667                 TheMessage = CtdlFetchMessage(msg_num, 0);
1668         }
1669         else {
1670                 TheMessage = CtdlFetchMessage(msg_num, 1);
1671         }
1672
1673         if (TheMessage == NULL) {
1674                 if (do_proto) cprintf("%d Can't locate msg %ld on disk\n",
1675                         ERROR + MESSAGE_NOT_FOUND, msg_num);
1676                 return(om_no_such_msg);
1677         }
1678
1679         /* Here is the weird form of this command, to process only an
1680          * encapsulated message/rfc822 section.
1681          */
1682         if (section) if (!IsEmptyStr(section)) if (strcmp(section, "0")) {
1683                 memset(&encap, 0, sizeof encap);
1684                 safestrncpy(encap.desired_section, section, sizeof encap.desired_section);
1685                 mime_parser(TheMessage->cm_fields['M'],
1686                         NULL,
1687                         *extract_encapsulated_message,
1688                         NULL, NULL, (void *)&encap, 0
1689                 );
1690                 CtdlFreeMessage(TheMessage);
1691                 TheMessage = NULL;
1692
1693                 if (encap.msg) {
1694                         encap.msg[encap.msglen] = 0;
1695                         TheMessage = convert_internet_message(encap.msg);
1696                         encap.msg = NULL;       /* no free() here, TheMessage owns it now */
1697
1698                         /* Now we let it fall through to the bottom of this
1699                          * function, because TheMessage now contains the
1700                          * encapsulated message instead of the top-level
1701                          * message.  Isn't that neat?
1702                          */
1703
1704                 }
1705                 else {
1706                         if (do_proto) cprintf("%d msg %ld has no part %s\n",
1707                                 ERROR + MESSAGE_NOT_FOUND, msg_num, section);
1708                         retcode = om_no_such_msg;
1709                 }
1710
1711         }
1712
1713         /* Ok, output the message now */
1714         retcode = CtdlOutputPreLoadedMsg(TheMessage, mode, headers_only, do_proto, crlf, flags);
1715         CtdlFreeMessage(TheMessage);
1716
1717         return(retcode);
1718 }
1719
1720
1721 char *qp_encode_email_addrs(char *source)
1722 {
1723         char *user, *node, *name;
1724         const char headerStr[] = "=?UTF-8?Q?";
1725         char *Encoded;
1726         char *EncodedName;
1727         char *nPtr;
1728         int need_to_encode = 0;
1729         long SourceLen;
1730         long EncodedMaxLen;
1731         long nColons = 0;
1732         long *AddrPtr;
1733         long *AddrUtf8;
1734         long nAddrPtrMax = 50;
1735         long nmax;
1736         int InQuotes = 0;
1737         int i, n;
1738
1739         if (source == NULL) return source;
1740         if (IsEmptyStr(source)) return source;
1741         cit_backtrace();
1742         syslog(LOG_DEBUG, "qp_encode_email_addrs: [%s]\n", source);
1743
1744         AddrPtr = malloc (sizeof (long) * nAddrPtrMax);
1745         AddrUtf8 = malloc (sizeof (long) * nAddrPtrMax);
1746         memset(AddrUtf8, 0, sizeof (long) * nAddrPtrMax);
1747         *AddrPtr = 0;
1748         i = 0;
1749         while (!IsEmptyStr (&source[i])) {
1750                 if (nColons >= nAddrPtrMax){
1751                         long *ptr;
1752
1753                         ptr = (long *) malloc(sizeof (long) * nAddrPtrMax * 2);
1754                         memcpy (ptr, AddrPtr, sizeof (long) * nAddrPtrMax);
1755                         free (AddrPtr), AddrPtr = ptr;
1756
1757                         ptr = (long *) malloc(sizeof (long) * nAddrPtrMax * 2);
1758                         memset(&ptr[nAddrPtrMax], 0,
1759                                sizeof (long) * nAddrPtrMax);
1760
1761                         memcpy (ptr, AddrUtf8, sizeof (long) * nAddrPtrMax);
1762                         free (AddrUtf8), AddrUtf8 = ptr;
1763                         nAddrPtrMax *= 2;
1764                 }
1765                 if (((unsigned char) source[i] < 32) ||
1766                     ((unsigned char) source[i] > 126)) {
1767                         need_to_encode = 1;
1768                         AddrUtf8[nColons] = 1;
1769                 }
1770                 if (source[i] == '"')
1771                         InQuotes = !InQuotes;
1772                 if (!InQuotes && source[i] == ',') {
1773                         AddrPtr[nColons] = i;
1774                         nColons++;
1775                 }
1776                 i++;
1777         }
1778         if (need_to_encode == 0) {
1779                 free(AddrPtr);
1780                 free(AddrUtf8);
1781                 return source;
1782         }
1783
1784         SourceLen = i;
1785         EncodedMaxLen = nColons * (sizeof(headerStr) + 3) + SourceLen * 3;
1786         Encoded = (char*) malloc (EncodedMaxLen);
1787
1788         for (i = 0; i < nColons; i++)
1789                 source[AddrPtr[i]++] = '\0';
1790         /* TODO: if libidn, this might get larger*/
1791         user = malloc(SourceLen + 1);
1792         node = malloc(SourceLen + 1);
1793         name = malloc(SourceLen + 1);
1794
1795         nPtr = Encoded;
1796         *nPtr = '\0';
1797         for (i = 0; i < nColons && nPtr != NULL; i++) {
1798                 nmax = EncodedMaxLen - (nPtr - Encoded);
1799                 if (AddrUtf8[i]) {
1800                         process_rfc822_addr(&source[AddrPtr[i]],
1801                                             user,
1802                                             node,
1803                                             name);
1804                         /* TODO: libIDN here ! */
1805                         if (IsEmptyStr(name)) {
1806                                 n = snprintf(nPtr, nmax,
1807                                              (i==0)?"%s@%s" : ",%s@%s",
1808                                              user, node);
1809                         }
1810                         else {
1811                                 EncodedName = rfc2047encode(name, strlen(name));
1812                                 n = snprintf(nPtr, nmax,
1813                                              (i==0)?"%s <%s@%s>" : ",%s <%s@%s>",
1814                                              EncodedName, user, node);
1815                                 free(EncodedName);
1816                         }
1817                 }
1818                 else {
1819                         n = snprintf(nPtr, nmax,
1820                                      (i==0)?"%s" : ",%s",
1821                                      &source[AddrPtr[i]]);
1822                 }
1823                 if (n > 0 )
1824                         nPtr += n;
1825                 else {
1826                         char *ptr, *nnPtr;
1827                         ptr = (char*) malloc(EncodedMaxLen * 2);
1828                         memcpy(ptr, Encoded, EncodedMaxLen);
1829                         nnPtr = ptr + (nPtr - Encoded), nPtr = nnPtr;
1830                         free(Encoded), Encoded = ptr;
1831                         EncodedMaxLen *= 2;
1832                         i--; /* do it once more with properly lengthened buffer */
1833                 }
1834         }
1835         for (i = 0; i < nColons; i++)
1836                 source[--AddrPtr[i]] = ',';
1837
1838         free(user);
1839         free(node);
1840         free(name);
1841         free(AddrUtf8);
1842         free(AddrPtr);
1843         return Encoded;
1844 }
1845
1846
1847 /* If the last item in a list of recipients was truncated to a partial address,
1848  * remove it completely in order to avoid choking libSieve
1849  */
1850 void sanitize_truncated_recipient(char *str)
1851 {
1852         if (!str) return;
1853         if (num_tokens(str, ',') < 2) return;
1854
1855         int len = strlen(str);
1856         if (len < 900) return;
1857         if (len > 998) str[998] = 0;
1858
1859         char *cptr = strrchr(str, ',');
1860         if (!cptr) return;
1861
1862         char *lptr = strchr(cptr, '<');
1863         char *rptr = strchr(cptr, '>');
1864
1865         if ( (lptr) && (rptr) && (rptr > lptr) ) return;
1866
1867         *cptr = 0;
1868 }
1869
1870
1871 void OutputCtdlMsgHeaders(
1872         struct CtdlMessage *TheMessage,
1873         int do_proto)           /* do Citadel protocol responses? */
1874 {
1875         char allkeys[30];
1876         int i, k, n;
1877         int suppress_f = 0;
1878         char buf[SIZ];
1879         char display_name[256];
1880
1881         /* begin header processing loop for Citadel message format */
1882         safestrncpy(display_name, "<unknown>", sizeof display_name);
1883         if (TheMessage->cm_fields['A']) {
1884                 strcpy(buf, TheMessage->cm_fields['A']);
1885                 if (TheMessage->cm_anon_type == MES_ANONONLY) {
1886                         safestrncpy(display_name, "****", sizeof display_name);
1887                 }
1888                 else if (TheMessage->cm_anon_type == MES_ANONOPT) {
1889                         safestrncpy(display_name, "anonymous", sizeof display_name);
1890                 }
1891                 else {
1892                         safestrncpy(display_name, buf, sizeof display_name);
1893                 }
1894                 if ((is_room_aide())
1895                     && ((TheMessage->cm_anon_type == MES_ANONONLY)
1896                         || (TheMessage->cm_anon_type == MES_ANONOPT))) {
1897                         size_t tmp = strlen(display_name);
1898                         snprintf(&display_name[tmp],
1899                                  sizeof display_name - tmp,
1900                                  " [%s]", buf);
1901                 }
1902         }
1903
1904         /* Don't show Internet address for users on the
1905          * local Citadel network.
1906          */
1907         suppress_f = 0;
1908         if (TheMessage->cm_fields['N'] != NULL)
1909                 if (!IsEmptyStr(TheMessage->cm_fields['N']))
1910                         if (haschar(TheMessage->cm_fields['N'], '.') == 0) {
1911                                 suppress_f = 1;
1912                         }
1913
1914         /* Now spew the header fields in the order we like them. */
1915         n = safestrncpy(allkeys, FORDER, sizeof allkeys);
1916         for (i=0; i<n; ++i) {
1917                 k = (int) allkeys[i];
1918                 if (k != 'M') {
1919                         if ( (TheMessage->cm_fields[k] != NULL)
1920                              && (msgkeys[k] != NULL) ) {
1921                                 if ((k == 'V') || (k == 'R') || (k == 'Y')) {
1922                                         sanitize_truncated_recipient(TheMessage->cm_fields[k]);
1923                                 }
1924                                 if (k == 'A') {
1925                                         if (do_proto) cprintf("%s=%s\n",
1926                                                               msgkeys[k],
1927                                                               display_name);
1928                                 }
1929                                 else if ((k == 'F') && (suppress_f)) {
1930                                         /* do nothing */
1931                                 }
1932                                 /* Masquerade display name if needed */
1933                                 else {
1934                                         if (do_proto) cprintf("%s=%s\n",
1935                                                               msgkeys[k],
1936                                                               TheMessage->cm_fields[k]
1937                                                 );
1938                                 }
1939                         }
1940                 }
1941         }
1942
1943 }
1944
1945 void OutputRFC822MsgHeaders(
1946         struct CtdlMessage *TheMessage,
1947         int flags,              /* should the bessage be exported clean */
1948         const char *nl,
1949         char *mid, long sizeof_mid,
1950         char *suser, long sizeof_suser,
1951         char *luser, long sizeof_luser,
1952         char *fuser, long sizeof_fuser,
1953         char *snode, long sizeof_snode)
1954 {
1955         char datestamp[100];
1956         int subject_found = 0;
1957         char buf[SIZ];
1958         int i, j, k;
1959         char *mptr = NULL;
1960         char *mpptr = NULL;
1961         char *hptr;
1962
1963         for (i = 0; i < 256; ++i) {
1964                 if (TheMessage->cm_fields[i]) {
1965                         mptr = mpptr = TheMessage->cm_fields[i];
1966
1967                         if (i == 'A') {
1968                                 safestrncpy(luser, mptr, sizeof_luser);
1969                                 safestrncpy(suser, mptr, sizeof_suser);
1970                         }
1971                         else if (i == 'Y') {
1972                                 if ((flags & QP_EADDR) != 0) {
1973                                         mptr = qp_encode_email_addrs(mptr);
1974                                 }
1975                                 sanitize_truncated_recipient(mptr);
1976                                 cprintf("CC: %s%s", mptr, nl);
1977                         }
1978                         else if (i == 'P') {
1979                                 cprintf("Return-Path: %s%s", mptr, nl);
1980                         }
1981                         else if (i == 'L') {
1982                                 cprintf("List-ID: %s%s", mptr, nl);
1983                         }
1984                         else if (i == 'V') {
1985                                 if ((flags & QP_EADDR) != 0)
1986                                         mptr = qp_encode_email_addrs(mptr);
1987                                 hptr = mptr;
1988                                 while ((*hptr != '\0') && isspace(*hptr))
1989                                         hptr ++;
1990                                 if (!IsEmptyStr(hptr))
1991                                         cprintf("Envelope-To: %s%s", hptr, nl);
1992                         }
1993                         else if (i == 'U') {
1994                                 cprintf("Subject: %s%s", mptr, nl);
1995                                 subject_found = 1;
1996                         }
1997                         else if (i == 'I')
1998                                 safestrncpy(mid, mptr, sizeof_mid); /// TODO: detect @ here and copy @nodename in if not found.
1999                         else if (i == 'F')
2000                                 safestrncpy(fuser, mptr, sizeof_fuser);
2001                         /* else if (i == 'O')
2002                            cprintf("X-Citadel-Room: %s%s",
2003                            mptr, nl); */
2004                         else if (i == 'N')
2005                                 safestrncpy(snode, mptr, sizeof_snode);
2006                         else if (i == 'R')
2007                         {
2008                                 if (haschar(mptr, '@') == 0)
2009                                 {
2010                                         sanitize_truncated_recipient(mptr);
2011                                         cprintf("To: %s@%s", mptr, config.c_fqdn);
2012                                         cprintf("%s", nl);
2013                                 }
2014                                 else
2015                                 {
2016                                         if ((flags & QP_EADDR) != 0) {
2017                                                 mptr = qp_encode_email_addrs(mptr);
2018                                         }
2019                                         sanitize_truncated_recipient(mptr);
2020                                         cprintf("To: %s", mptr);
2021                                         cprintf("%s", nl);
2022                                 }
2023                         }
2024                         else if (i == 'T') {
2025                                 datestring(datestamp, sizeof datestamp,
2026                                            atol(mptr), DATESTRING_RFC822);
2027                                 cprintf("Date: %s%s", datestamp, nl);
2028                         }
2029                         else if (i == 'W') {
2030                                 cprintf("References: ");
2031                                 k = num_tokens(mptr, '|');
2032                                 for (j=0; j<k; ++j) {
2033                                         extract_token(buf, mptr, j, '|', sizeof buf);
2034                                         cprintf("<%s>", buf);
2035                                         if (j == (k-1)) {
2036                                                 cprintf("%s", nl);
2037                                         }
2038                                         else {
2039                                                 cprintf(" ");
2040                                         }
2041                                 }
2042                         }
2043                         else if (i == 'K') {
2044                                 hptr = mptr;
2045                                 while ((*hptr != '\0') && isspace(*hptr))
2046                                         hptr ++;
2047                                 if (!IsEmptyStr(hptr))
2048                                         cprintf("Reply-To: %s%s", mptr, nl);
2049                         }
2050                         if (mptr != mpptr)
2051                                 free (mptr);
2052                 }
2053         }
2054         if (subject_found == 0) {
2055                 cprintf("Subject: (no subject)%s", nl);
2056         }
2057 }
2058
2059
2060 void Dump_RFC822HeadersBody(
2061         struct CtdlMessage *TheMessage,
2062         int headers_only,       /* eschew the message body? */
2063         int flags,              /* should the bessage be exported clean? */
2064
2065         const char *nl)
2066 {
2067         cit_uint8_t prev_ch;
2068         int eoh = 0;
2069         const char *StartOfText = StrBufNOTNULL;
2070         char outbuf[1024];
2071         int outlen = 0;
2072         int nllen = strlen(nl);
2073         char *mptr;
2074
2075         mptr = TheMessage->cm_fields['M'];
2076
2077
2078         prev_ch = '\0';
2079         while (*mptr != '\0') {
2080                 if (*mptr == '\r') {
2081                         /* do nothing */
2082                 }
2083                 else {
2084                         if ((!eoh) &&
2085                             (*mptr == '\n'))
2086                         {
2087                                 eoh = (*(mptr+1) == '\r') && (*(mptr+2) == '\n');
2088                                 if (!eoh)
2089                                         eoh = *(mptr+1) == '\n';
2090                                 if (eoh)
2091                                 {
2092                                         StartOfText = mptr;
2093                                         StartOfText = strchr(StartOfText, '\n');
2094                                         StartOfText = strchr(StartOfText, '\n');
2095                                 }
2096                         }
2097                         if (((headers_only == HEADERS_NONE) && (mptr >= StartOfText)) ||
2098                             ((headers_only == HEADERS_ONLY) && (mptr < StartOfText)) ||
2099                             ((headers_only != HEADERS_NONE) &&
2100                              (headers_only != HEADERS_ONLY))
2101                                 ) {
2102                                 if (*mptr == '\n') {
2103                                         memcpy(&outbuf[outlen], nl, nllen);
2104                                         outlen += nllen;
2105                                         outbuf[outlen] = '\0';
2106                                 }
2107                                 else {
2108                                         outbuf[outlen++] = *mptr;
2109                                 }
2110                         }
2111                 }
2112                 if (flags & ESC_DOT)
2113                 {
2114                         if ((prev_ch == '\n') &&
2115                             (*mptr == '.') &&
2116                             ((*(mptr+1) == '\r') || (*(mptr+1) == '\n')))
2117                         {
2118                                 outbuf[outlen++] = '.';
2119                         }
2120                         prev_ch = *mptr;
2121                 }
2122                 ++mptr;
2123                 if (outlen > 1000) {
2124                         if (client_write(outbuf, outlen) == -1)
2125                         {
2126                                 syslog(LOG_ERR, "Dump_RFC822HeadersBody(): aborting due to write failure.\n");
2127                                 return;
2128                         }
2129                         outlen = 0;
2130                 }
2131         }
2132         if (outlen > 0) {
2133                 client_write(outbuf, outlen);
2134                 outlen = 0;
2135         }
2136 }
2137
2138
2139
2140 /* If the format type on disk is 1 (fixed-format), then we want
2141  * everything to be output completely literally ... regardless of
2142  * what message transfer format is in use.
2143  */
2144 void DumpFormatFixed(
2145         struct CtdlMessage *TheMessage,
2146         int mode,               /* how would you like that message? */
2147         const char *nl)
2148 {
2149         cit_uint8_t ch;
2150         char buf[SIZ];
2151         int buflen;
2152         int xlline = 0;
2153         int nllen = strlen (nl);
2154         char *mptr;
2155
2156         mptr = TheMessage->cm_fields['M'];
2157
2158         if (mode == MT_MIME) {
2159                 cprintf("Content-type: text/plain\n\n");
2160         }
2161         *buf = '\0';
2162         buflen = 0;
2163         while (ch = *mptr++, ch > 0) {
2164                 if (ch == '\n')
2165                         ch = '\r';
2166
2167                 if ((buflen > 250) && (!xlline)){
2168                         int tbuflen;
2169                         tbuflen = buflen;
2170
2171                         while ((buflen > 0) &&
2172                                (!isspace(buf[buflen])))
2173                                 buflen --;
2174                         if (buflen == 0) {
2175                                 xlline = 1;
2176                         }
2177                         else {
2178                                 mptr -= tbuflen - buflen;
2179                                 buf[buflen] = '\0';
2180                                 ch = '\r';
2181                         }
2182                 }
2183                 /* if we reach the outer bounds of our buffer,
2184                    abort without respect what whe purge. */
2185                 if (xlline &&
2186                     ((isspace(ch)) ||
2187                      (buflen > SIZ - nllen - 2)))
2188                         ch = '\r';
2189
2190                 if (ch == '\r') {
2191                         memcpy (&buf[buflen], nl, nllen);
2192                         buflen += nllen;
2193                         buf[buflen] = '\0';
2194
2195                         if (client_write(buf, buflen) == -1)
2196                         {
2197                                 syslog(LOG_ERR, "DumpFormatFixed(): aborting due to write failure.\n");
2198                                 return;
2199                         }
2200                         *buf = '\0';
2201                         buflen = 0;
2202                         xlline = 0;
2203                 } else {
2204                         buf[buflen] = ch;
2205                         buflen++;
2206                 }
2207         }
2208         buf[buflen] = '\0';
2209         if (!IsEmptyStr(buf))
2210                 cprintf("%s%s", buf, nl);
2211 }
2212
2213 /*
2214  * Get a message off disk.  (returns om_* values found in msgbase.h)
2215  */
2216 int CtdlOutputPreLoadedMsg(
2217                 struct CtdlMessage *TheMessage,
2218                 int mode,               /* how would you like that message? */
2219                 int headers_only,       /* eschew the message body? */
2220                 int do_proto,           /* do Citadel protocol responses? */
2221                 int crlf,               /* Use CRLF newlines instead of LF? */
2222                 int flags               /* should the bessage be exported clean? */
2223 ) {
2224         int i;
2225         char *mptr = NULL;
2226         const char *nl; /* newline string */
2227         struct ma_info ma;
2228
2229         /* Buffers needed for RFC822 translation.  These are all filled
2230          * using functions that are bounds-checked, and therefore we can
2231          * make them substantially smaller than SIZ.
2232          */
2233         char suser[100];
2234         char luser[100];
2235         char fuser[100];
2236         char snode[100];
2237         char mid[100];
2238
2239         syslog(LOG_DEBUG, "CtdlOutputPreLoadedMsg(TheMessage=%s, %d, %d, %d, %d\n",
2240                 ((TheMessage == NULL) ? "NULL" : "not null"),
2241                 mode, headers_only, do_proto, crlf);
2242
2243         strcpy(mid, "unknown");
2244         nl = (crlf ? "\r\n" : "\n");
2245
2246         if (!is_valid_message(TheMessage)) {
2247                 syslog(LOG_ERR,
2248                         "ERROR: invalid preloaded message for output\n");
2249                 cit_backtrace ();
2250                 return(om_no_such_msg);
2251         }
2252
2253         /* Suppress envelope recipients if required to avoid disclosing BCC addresses.
2254          * Pad it with spaces in order to avoid changing the RFC822 length of the message.
2255          */
2256         if ( (flags & SUPPRESS_ENV_TO) && (TheMessage->cm_fields['V'] != NULL) ) {
2257                 memset(TheMessage->cm_fields['V'], ' ', strlen(TheMessage->cm_fields['V']));
2258         }
2259
2260         /* Are we downloading a MIME component? */
2261         if (mode == MT_DOWNLOAD) {
2262                 if (TheMessage->cm_format_type != FMT_RFC822) {
2263                         if (do_proto)
2264                                 cprintf("%d This is not a MIME message.\n",
2265                                 ERROR + ILLEGAL_VALUE);
2266                 } else if (CC->download_fp != NULL) {
2267                         if (do_proto) cprintf(
2268                                 "%d You already have a download open.\n",
2269                                 ERROR + RESOURCE_BUSY);
2270                 } else {
2271                         /* Parse the message text component */
2272                         mptr = TheMessage->cm_fields['M'];
2273                         mime_parser(mptr, NULL, *mime_download, NULL, NULL, NULL, 0);
2274                         /* If there's no file open by this time, the requested
2275                          * section wasn't found, so print an error
2276                          */
2277                         if (CC->download_fp == NULL) {
2278                                 if (do_proto) cprintf(
2279                                         "%d Section %s not found.\n",
2280                                         ERROR + FILE_NOT_FOUND,
2281                                         CC->download_desired_section);
2282                         }
2283                 }
2284                 return((CC->download_fp != NULL) ? om_ok : om_mime_error);
2285         }
2286
2287         /* MT_SPEW_SECTION is like MT_DOWNLOAD except it outputs the whole MIME part
2288          * in a single server operation instead of opening a download file.
2289          */
2290         if (mode == MT_SPEW_SECTION) {
2291                 if (TheMessage->cm_format_type != FMT_RFC822) {
2292                         if (do_proto)
2293                                 cprintf("%d This is not a MIME message.\n",
2294                                 ERROR + ILLEGAL_VALUE);
2295                 } else {
2296                         /* Parse the message text component */
2297                         int found_it = 0;
2298
2299                         mptr = TheMessage->cm_fields['M'];
2300                         mime_parser(mptr, NULL, *mime_spew_section, NULL, NULL, (void *)&found_it, 0);
2301                         /* If section wasn't found, print an error
2302                          */
2303                         if (!found_it) {
2304                                 if (do_proto) cprintf(
2305                                         "%d Section %s not found.\n",
2306                                         ERROR + FILE_NOT_FOUND,
2307                                         CC->download_desired_section);
2308                         }
2309                 }
2310                 return((CC->download_fp != NULL) ? om_ok : om_mime_error);
2311         }
2312
2313         /* now for the user-mode message reading loops */
2314         if (do_proto) cprintf("%d msg:\n", LISTING_FOLLOWS);
2315
2316         /* Does the caller want to skip the headers? */
2317         if (headers_only == HEADERS_NONE) goto START_TEXT;
2318
2319         /* Tell the client which format type we're using. */
2320         if ( (mode == MT_CITADEL) && (do_proto) ) {
2321                 cprintf("type=%d\n", TheMessage->cm_format_type);
2322         }
2323
2324         /* nhdr=yes means that we're only displaying headers, no body */
2325         if ( (TheMessage->cm_anon_type == MES_ANONONLY)
2326            && ((mode == MT_CITADEL) || (mode == MT_MIME))
2327            && (do_proto)
2328            ) {
2329                 cprintf("nhdr=yes\n");
2330         }
2331
2332         if ((mode == MT_CITADEL) || (mode == MT_MIME))
2333                 OutputCtdlMsgHeaders(TheMessage, do_proto);
2334
2335
2336         /* begin header processing loop for RFC822 transfer format */
2337         strcpy(suser, "");
2338         strcpy(luser, "");
2339         strcpy(fuser, "");
2340         strcpy(snode, NODENAME);
2341         if (mode == MT_RFC822)
2342                 OutputRFC822MsgHeaders(
2343                         TheMessage,
2344                         flags,
2345                         nl,
2346                         mid, sizeof(mid),
2347                         suser, sizeof(suser),
2348                         luser, sizeof(luser),
2349                         fuser, sizeof(fuser),
2350                         snode, sizeof(snode)
2351                         );
2352
2353
2354         for (i=0; !IsEmptyStr(&suser[i]); ++i) {
2355                 suser[i] = tolower(suser[i]);
2356                 if (!isalnum(suser[i])) suser[i]='_';
2357         }
2358
2359         if (mode == MT_RFC822) {
2360                 if (!strcasecmp(snode, NODENAME)) {
2361                         safestrncpy(snode, FQDN, sizeof snode);
2362                 }
2363
2364                 /* Construct a fun message id */
2365                 cprintf("Message-ID: <%s", mid);/// todo: this possibly breaks threadding mails.
2366                 if (strchr(mid, '@')==NULL) {
2367                         cprintf("@%s", snode);
2368                 }
2369                 cprintf(">%s", nl);
2370
2371                 if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONONLY)) {
2372                         cprintf("From: \"----\" <x@x.org>%s", nl);
2373                 }
2374                 else if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONOPT)) {
2375                         cprintf("From: \"anonymous\" <x@x.org>%s", nl);
2376                 }
2377                 else if (!IsEmptyStr(fuser)) {
2378                         cprintf("From: \"%s\" <%s>%s", luser, fuser, nl);
2379                 }
2380                 else {
2381                         cprintf("From: \"%s\" <%s@%s>%s", luser, suser, snode, nl);
2382                 }
2383
2384                 /* Blank line signifying RFC822 end-of-headers */
2385                 if (TheMessage->cm_format_type != FMT_RFC822) {
2386                         cprintf("%s", nl);
2387                 }
2388         }
2389
2390         /* end header processing loop ... at this point, we're in the text */
2391 START_TEXT:
2392         if (headers_only == HEADERS_FAST) goto DONE;
2393
2394         /* Tell the client about the MIME parts in this message */
2395         if (TheMessage->cm_format_type == FMT_RFC822) {
2396                 if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
2397                         mptr = TheMessage->cm_fields['M'];
2398                         memset(&ma, 0, sizeof(struct ma_info));
2399                         mime_parser(mptr, NULL,
2400                                 (do_proto ? *list_this_part : NULL),
2401                                 (do_proto ? *list_this_pref : NULL),
2402                                 (do_proto ? *list_this_suff : NULL),
2403                                 (void *)&ma, 1);
2404                 }
2405                 else if (mode == MT_RFC822) {   /* unparsed RFC822 dump */
2406                         Dump_RFC822HeadersBody(
2407                                 TheMessage,
2408                                 headers_only,
2409                                 flags,
2410                                 nl);
2411                         goto DONE;
2412                 }
2413         }
2414
2415         if (headers_only == HEADERS_ONLY) {
2416                 goto DONE;
2417         }
2418
2419         /* signify start of msg text */
2420         if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
2421                 if (do_proto) cprintf("text\n");
2422         }
2423
2424         if (TheMessage->cm_format_type == FMT_FIXED)
2425                 DumpFormatFixed(
2426                         TheMessage,
2427                         mode,           /* how would you like that message? */
2428                         nl);
2429
2430         /* If the message on disk is format 0 (Citadel vari-format), we
2431          * output using the formatter at 80 columns.  This is the final output
2432          * form if the transfer format is RFC822, but if the transfer format
2433          * is Citadel proprietary, it'll still work, because the indentation
2434          * for new paragraphs is correct and the client will reformat the
2435          * message to the reader's screen width.
2436          */
2437         if (TheMessage->cm_format_type == FMT_CITADEL) {
2438                 mptr = TheMessage->cm_fields['M'];
2439
2440                 if (mode == MT_MIME) {
2441                         cprintf("Content-type: text/x-citadel-variformat\n\n");
2442                 }
2443                 memfmout(mptr, nl);
2444         }
2445
2446         /* If the message on disk is format 4 (MIME), we've gotta hand it
2447          * off to the MIME parser.  The client has already been told that
2448          * this message is format 1 (fixed format), so the callback function
2449          * we use will display those parts as-is.
2450          */
2451         if (TheMessage->cm_format_type == FMT_RFC822) {
2452                 memset(&ma, 0, sizeof(struct ma_info));
2453
2454                 if (mode == MT_MIME) {
2455                         ma.use_fo_hooks = 0;
2456                         strcpy(ma.chosen_part, "1");
2457                         ma.chosen_pref = 9999;
2458                         ma.dont_decode = CC->msg4_dont_decode;
2459                         mime_parser(mptr, NULL,
2460                                 *choose_preferred, *fixed_output_pre,
2461                                 *fixed_output_post, (void *)&ma, 1);
2462                         mime_parser(mptr, NULL,
2463                                 *output_preferred, NULL, NULL, (void *)&ma, 1);
2464                 }
2465                 else {
2466                         ma.use_fo_hooks = 1;
2467                         mime_parser(mptr, NULL,
2468                                 *fixed_output, *fixed_output_pre,
2469                                 *fixed_output_post, (void *)&ma, 0);
2470                 }
2471
2472         }
2473
2474 DONE:   /* now we're done */
2475         if (do_proto) cprintf("000\n");
2476         return(om_ok);
2477 }
2478
2479
2480 /*
2481  * display a message (mode 0 - Citadel proprietary)
2482  */
2483 void cmd_msg0(char *cmdbuf)
2484 {
2485         long msgid;
2486         int headers_only = HEADERS_ALL;
2487
2488         msgid = extract_long(cmdbuf, 0);
2489         headers_only = extract_int(cmdbuf, 1);
2490
2491         CtdlOutputMsg(msgid, MT_CITADEL, headers_only, 1, 0, NULL, 0);
2492         return;
2493 }
2494
2495
2496 /*
2497  * display a message (mode 2 - RFC822)
2498  */
2499 void cmd_msg2(char *cmdbuf)
2500 {
2501         long msgid;
2502         int headers_only = HEADERS_ALL;
2503
2504         msgid = extract_long(cmdbuf, 0);
2505         headers_only = extract_int(cmdbuf, 1);
2506
2507         CtdlOutputMsg(msgid, MT_RFC822, headers_only, 1, 1, NULL, 0);
2508 }
2509
2510
2511
2512 /*
2513  * display a message (mode 3 - IGnet raw format - internal programs only)
2514  */
2515 void cmd_msg3(char *cmdbuf)
2516 {
2517         long msgnum;
2518         struct CtdlMessage *msg = NULL;
2519         struct ser_ret smr;
2520
2521         if (CC->internal_pgm == 0) {
2522                 cprintf("%d This command is for internal programs only.\n",
2523                         ERROR + HIGHER_ACCESS_REQUIRED);
2524                 return;
2525         }
2526
2527         msgnum = extract_long(cmdbuf, 0);
2528         msg = CtdlFetchMessage(msgnum, 1);
2529         if (msg == NULL) {
2530                 cprintf("%d Message %ld not found.\n",
2531                         ERROR + MESSAGE_NOT_FOUND, msgnum);
2532                 return;
2533         }
2534
2535         serialize_message(&smr, msg);
2536         CtdlFreeMessage(msg);
2537
2538         if (smr.len == 0) {
2539                 cprintf("%d Unable to serialize message\n",
2540                         ERROR + INTERNAL_ERROR);
2541                 return;
2542         }
2543
2544         cprintf("%d %ld\n", BINARY_FOLLOWS, (long)smr.len);
2545         client_write((char *)smr.ser, (int)smr.len);
2546         free(smr.ser);
2547 }
2548
2549
2550
2551 /*
2552  * Display a message using MIME content types
2553  */
2554 void cmd_msg4(char *cmdbuf)
2555 {
2556         long msgid;
2557         char section[64];
2558
2559         msgid = extract_long(cmdbuf, 0);
2560         extract_token(section, cmdbuf, 1, '|', sizeof section);
2561         CtdlOutputMsg(msgid, MT_MIME, 0, 1, 0, (section[0] ? section : NULL) , 0);
2562 }
2563
2564
2565
2566 /*
2567  * Client tells us its preferred message format(s)
2568  */
2569 void cmd_msgp(char *cmdbuf)
2570 {
2571         if (!strcasecmp(cmdbuf, "dont_decode")) {
2572                 CC->msg4_dont_decode = 1;
2573                 cprintf("%d MSG4 will not pre-decode messages.\n", CIT_OK);
2574         }
2575         else {
2576                 safestrncpy(CC->preferred_formats, cmdbuf, sizeof(CC->preferred_formats));
2577                 cprintf("%d Preferred MIME formats have been set.\n", CIT_OK);
2578         }
2579 }
2580
2581
2582 /*
2583  * Open a component of a MIME message as a download file
2584  */
2585 void cmd_opna(char *cmdbuf)
2586 {
2587         long msgid;
2588         char desired_section[128];
2589
2590         msgid = extract_long(cmdbuf, 0);
2591         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2592         safestrncpy(CC->download_desired_section, desired_section,
2593                 sizeof CC->download_desired_section);
2594         CtdlOutputMsg(msgid, MT_DOWNLOAD, 0, 1, 1, NULL, 0);
2595 }
2596
2597
2598 /*
2599  * Open a component of a MIME message and transmit it all at once
2600  */
2601 void cmd_dlat(char *cmdbuf)
2602 {
2603         long msgid;
2604         char desired_section[128];
2605
2606         msgid = extract_long(cmdbuf, 0);
2607         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2608         safestrncpy(CC->download_desired_section, desired_section,
2609                 sizeof CC->download_desired_section);
2610         CtdlOutputMsg(msgid, MT_SPEW_SECTION, 0, 1, 1, NULL, 0);
2611 }
2612
2613
2614 /*
2615  * Save one or more message pointers into a specified room
2616  * (Returns 0 for success, nonzero for failure)
2617  * roomname may be NULL to use the current room
2618  *
2619  * Note that the 'supplied_msg' field may be set to NULL, in which case
2620  * the message will be fetched from disk, by number, if we need to perform
2621  * replication checks.  This adds an additional database read, so if the
2622  * caller already has the message in memory then it should be supplied.  (Obviously
2623  * this mode of operation only works if we're saving a single message.)
2624  */
2625 int CtdlSaveMsgPointersInRoom(char *roomname, long newmsgidlist[], int num_newmsgs,
2626                         int do_repl_check, struct CtdlMessage *supplied_msg, int suppress_refcount_adj
2627 ) {
2628         int i, j, unique;
2629         char hold_rm[ROOMNAMELEN];
2630         struct cdbdata *cdbfr;
2631         int num_msgs;
2632         long *msglist;
2633         long highest_msg = 0L;
2634
2635         long msgid = 0;
2636         struct CtdlMessage *msg = NULL;
2637
2638         long *msgs_to_be_merged = NULL;
2639         int num_msgs_to_be_merged = 0;
2640
2641         syslog(LOG_DEBUG,
2642                 "CtdlSaveMsgPointersInRoom(room=%s, num_msgs=%d, repl=%d, suppress_rca=%d)\n",
2643                 roomname, num_newmsgs, do_repl_check, suppress_refcount_adj
2644         );
2645
2646         strcpy(hold_rm, CC->room.QRname);
2647
2648         /* Sanity checks */
2649         if (newmsgidlist == NULL) return(ERROR + INTERNAL_ERROR);
2650         if (num_newmsgs < 1) return(ERROR + INTERNAL_ERROR);
2651         if (num_newmsgs > 1) supplied_msg = NULL;
2652
2653         /* Now the regular stuff */
2654         if (CtdlGetRoomLock(&CC->room,
2655            ((roomname != NULL) ? roomname : CC->room.QRname) )
2656            != 0) {
2657                 syslog(LOG_ERR, "No such room <%s>\n", roomname);
2658                 return(ERROR + ROOM_NOT_FOUND);
2659         }
2660
2661
2662         msgs_to_be_merged = malloc(sizeof(long) * num_newmsgs);
2663         num_msgs_to_be_merged = 0;
2664
2665
2666         cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
2667         if (cdbfr == NULL) {
2668                 msglist = NULL;
2669                 num_msgs = 0;
2670         } else {
2671                 msglist = (long *) cdbfr->ptr;
2672                 cdbfr->ptr = NULL;      /* CtdlSaveMsgPointerInRoom() now owns this memory */
2673                 num_msgs = cdbfr->len / sizeof(long);
2674                 cdb_free(cdbfr);
2675         }
2676
2677
2678         /* Create a list of msgid's which were supplied by the caller, but do
2679          * not already exist in the target room.  It is absolutely taboo to
2680          * have more than one reference to the same message in a room.
2681          */
2682         for (i=0; i<num_newmsgs; ++i) {
2683                 unique = 1;
2684                 if (num_msgs > 0) for (j=0; j<num_msgs; ++j) {
2685                         if (msglist[j] == newmsgidlist[i]) {
2686                                 unique = 0;
2687                         }
2688                 }
2689                 if (unique) {
2690                         msgs_to_be_merged[num_msgs_to_be_merged++] = newmsgidlist[i];
2691                 }
2692         }
2693
2694         syslog(LOG_DEBUG, "%d unique messages to be merged\n", num_msgs_to_be_merged);
2695
2696         /*
2697          * Now merge the new messages
2698          */
2699         msglist = realloc(msglist, (sizeof(long) * (num_msgs + num_msgs_to_be_merged)) );
2700         if (msglist == NULL) {
2701                 syslog(LOG_ALERT, "ERROR: can't realloc message list!\n");
2702         }
2703         memcpy(&msglist[num_msgs], msgs_to_be_merged, (sizeof(long) * num_msgs_to_be_merged) );
2704         num_msgs += num_msgs_to_be_merged;
2705
2706         /* Sort the message list, so all the msgid's are in order */
2707         num_msgs = sort_msglist(msglist, num_msgs);
2708
2709         /* Determine the highest message number */
2710         highest_msg = msglist[num_msgs - 1];
2711
2712         /* Write it back to disk. */
2713         cdb_store(CDB_MSGLISTS, &CC->room.QRnumber, (int)sizeof(long),
2714                   msglist, (int)(num_msgs * sizeof(long)));
2715
2716         /* Free up the memory we used. */
2717         free(msglist);
2718
2719         /* Update the highest-message pointer and unlock the room. */
2720         CC->room.QRhighest = highest_msg;
2721         CtdlPutRoomLock(&CC->room);
2722
2723         /* Perform replication checks if necessary */
2724         if ( (DoesThisRoomNeedEuidIndexing(&CC->room)) && (do_repl_check) ) {
2725                 syslog(LOG_DEBUG, "CtdlSaveMsgPointerInRoom() doing repl checks\n");
2726
2727                 for (i=0; i<num_msgs_to_be_merged; ++i) {
2728                         msgid = msgs_to_be_merged[i];
2729
2730                         if (supplied_msg != NULL) {
2731                                 msg = supplied_msg;
2732                         }
2733                         else {
2734                                 msg = CtdlFetchMessage(msgid, 0);
2735                         }
2736
2737                         if (msg != NULL) {
2738                                 ReplicationChecks(msg);
2739
2740                                 /* If the message has an Exclusive ID, index that... */
2741                                 if (msg->cm_fields['E'] != NULL) {
2742                                         index_message_by_euid(msg->cm_fields['E'], &CC->room, msgid);
2743                                 }
2744
2745                                 /* Free up the memory we may have allocated */
2746                                 if (msg != supplied_msg) {
2747                                         CtdlFreeMessage(msg);
2748                                 }
2749                         }
2750
2751                 }
2752         }
2753
2754         else {
2755                 syslog(LOG_DEBUG, "CtdlSaveMsgPointerInRoom() skips repl checks\n");
2756         }
2757
2758         /* Submit this room for processing by hooks */
2759         PerformRoomHooks(&CC->room);
2760
2761         /* Go back to the room we were in before we wandered here... */
2762         CtdlGetRoom(&CC->room, hold_rm);
2763
2764         /* Bump the reference count for all messages which were merged */
2765         if (!suppress_refcount_adj) {
2766                 for (i=0; i<num_msgs_to_be_merged; ++i) {
2767                         AdjRefCount(msgs_to_be_merged[i], +1);
2768                 }
2769         }
2770
2771         /* Free up memory... */
2772         if (msgs_to_be_merged != NULL) {
2773                 free(msgs_to_be_merged);
2774         }
2775
2776         /* Return success. */
2777         return (0);
2778 }
2779
2780
2781 /*
2782  * This is the same as CtdlSaveMsgPointersInRoom() but it only accepts
2783  * a single message.
2784  */
2785 int CtdlSaveMsgPointerInRoom(char *roomname, long msgid,
2786                              int do_repl_check, struct CtdlMessage *supplied_msg)
2787 {
2788         return CtdlSaveMsgPointersInRoom(roomname, &msgid, 1, do_repl_check, supplied_msg, 0);
2789 }
2790
2791
2792
2793
2794 /*
2795  * Message base operation to save a new message to the message store
2796  * (returns new message number)
2797  *
2798  * This is the back end for CtdlSubmitMsg() and should not be directly
2799  * called by server-side modules.
2800  *
2801  */
2802 long send_message(struct CtdlMessage *msg) {
2803         long newmsgid;
2804         long retval;
2805         char msgidbuf[256];
2806         struct ser_ret smr;
2807         int is_bigmsg = 0;
2808         char *holdM = NULL;
2809
2810         /* Get a new message number */
2811         newmsgid = get_new_message_number();
2812         snprintf(msgidbuf, sizeof msgidbuf, "%08lX-%08lX@%s",
2813                  (long unsigned int) time(NULL),
2814                  (long unsigned int) newmsgid,
2815                  config.c_fqdn
2816                 );
2817
2818         /* Generate an ID if we don't have one already */
2819         if (msg->cm_fields['I']==NULL) {
2820                 msg->cm_fields['I'] = strdup(msgidbuf);
2821         }
2822
2823         /* If the message is big, set its body aside for storage elsewhere */
2824         if (msg->cm_fields['M'] != NULL) {
2825                 if (strlen(msg->cm_fields['M']) > BIGMSG) {
2826                         is_bigmsg = 1;
2827                         holdM = msg->cm_fields['M'];
2828                         msg->cm_fields['M'] = NULL;
2829                 }
2830         }
2831
2832         /* Serialize our data structure for storage in the database */
2833         serialize_message(&smr, msg);
2834
2835         if (is_bigmsg) {
2836                 msg->cm_fields['M'] = holdM;
2837         }
2838
2839         if (smr.len == 0) {
2840                 cprintf("%d Unable to serialize message\n",
2841                         ERROR + INTERNAL_ERROR);
2842                 return (-1L);
2843         }
2844
2845         /* Write our little bundle of joy into the message base */
2846         if (cdb_store(CDB_MSGMAIN, &newmsgid, (int)sizeof(long),
2847                       smr.ser, smr.len) < 0) {
2848                 syslog(LOG_ERR, "Can't store message\n");
2849                 retval = 0L;
2850         } else {
2851                 if (is_bigmsg) {
2852                         cdb_store(CDB_BIGMSGS,
2853                                   &newmsgid,
2854                                   (int)sizeof(long),
2855                                   holdM,
2856                                   (strlen(holdM) + 1)
2857                                 );
2858                 }
2859                 retval = newmsgid;
2860         }
2861
2862         /* Free the memory we used for the serialized message */
2863         free(smr.ser);
2864
2865         /* Return the *local* message ID to the caller
2866          * (even if we're storing an incoming network message)
2867          */
2868         return(retval);
2869 }
2870
2871
2872
2873 /*
2874  * Serialize a struct CtdlMessage into the format used on disk and network.
2875  *
2876  * This function loads up a "struct ser_ret" (defined in server.h) which
2877  * contains the length of the serialized message and a pointer to the
2878  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
2879  */
2880 void serialize_message(struct ser_ret *ret,             /* return values */
2881                        struct CtdlMessage *msg) /* unserialized msg */
2882 {
2883         size_t wlen, fieldlen;
2884         int i;
2885         static char *forder = FORDER;
2886
2887         /*
2888          * Check for valid message format
2889          */
2890         if (is_valid_message(msg) == 0) {
2891                 syslog(LOG_ERR, "serialize_message() aborting due to invalid message\n");
2892                 ret->len = 0;
2893                 ret->ser = NULL;
2894                 return;
2895         }
2896
2897         ret->len = 3;
2898         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL)
2899                                      ret->len = ret->len +
2900                                              strlen(msg->cm_fields[(int)forder[i]]) + 2;
2901
2902         ret->ser = malloc(ret->len);
2903         if (ret->ser == NULL) {
2904                 syslog(LOG_ERR, "serialize_message() malloc(%ld) failed: %s\n",
2905                        (long)ret->len, strerror(errno));
2906                 ret->len = 0;
2907                 ret->ser = NULL;
2908                 return;
2909         }
2910
2911         ret->ser[0] = 0xFF;
2912         ret->ser[1] = msg->cm_anon_type;
2913         ret->ser[2] = msg->cm_format_type;
2914         wlen = 3;
2915
2916         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
2917                         fieldlen = strlen(msg->cm_fields[(int)forder[i]]);
2918                         ret->ser[wlen++] = (char)forder[i];
2919                         safestrncpy((char *)&ret->ser[wlen], msg->cm_fields[(int)forder[i]], fieldlen+1);
2920                         wlen = wlen + fieldlen + 1;
2921                 }
2922         if (ret->len != wlen) syslog(LOG_ERR, "ERROR: len=%ld wlen=%ld\n",
2923                                      (long)ret->len, (long)wlen);
2924
2925         return;
2926 }
2927
2928
2929 /*
2930  * Serialize a struct CtdlMessage into the format used on disk and network.
2931  *
2932  * This function loads up a "struct ser_ret" (defined in server.h) which
2933  * contains the length of the serialized message and a pointer to the
2934  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
2935  */
2936 void dump_message(struct CtdlMessage *msg,      /* unserialized msg */
2937                   long Siz)                     /* how many chars ? */
2938 {
2939         int i;
2940         static char *forder = FORDER;
2941         char *buf;
2942
2943         /*
2944          * Check for valid message format
2945          */
2946         if (is_valid_message(msg) == 0) {
2947                 syslog(LOG_ERR, "dump_message() aborting due to invalid message\n");
2948                 return;
2949         }
2950
2951         buf = (char*) malloc (Siz + 1);
2952
2953         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
2954                         snprintf (buf, Siz, " msg[%c] = %s ...\n", (char) forder[i],
2955                                    msg->cm_fields[(int)forder[i]]);
2956                         if (client_write (buf, strlen(buf)) == -1)
2957                         {
2958                                 syslog(LOG_ERR, "dump_message(): aborting due to write failure.\n");
2959                                 return;
2960                         }
2961                 }
2962
2963         return;
2964 }
2965
2966
2967
2968 /*
2969  * Check to see if any messages already exist in the current room which
2970  * carry the same Exclusive ID as this one.  If any are found, delete them.
2971  */
2972 void ReplicationChecks(struct CtdlMessage *msg) {
2973         long old_msgnum = (-1L);
2974
2975         if (DoesThisRoomNeedEuidIndexing(&CC->room) == 0) return;
2976
2977         syslog(LOG_DEBUG, "Performing replication checks in <%s>\n",
2978                CC->room.QRname);
2979
2980         /* No exclusive id?  Don't do anything. */
2981         if (msg == NULL) return;
2982         if (msg->cm_fields['E'] == NULL) return;
2983         if (IsEmptyStr(msg->cm_fields['E'])) return;
2984         /*syslog(LOG_DEBUG, "Exclusive ID: <%s> for room <%s>\n",
2985           msg->cm_fields['E'], CC->room.QRname);*/
2986
2987         old_msgnum = CtdlLocateMessageByEuid(msg->cm_fields['E'], &CC->room);
2988         if (old_msgnum > 0L) {
2989                 syslog(LOG_DEBUG, "ReplicationChecks() replacing message %ld\n", old_msgnum);
2990                 CtdlDeleteMessages(CC->room.QRname, &old_msgnum, 1, "");
2991         }
2992 }
2993
2994
2995
2996 /*
2997  * Save a message to disk and submit it into the delivery system.
2998  */
2999 long CtdlSubmitMsg(struct CtdlMessage *msg,     /* message to save */
3000                    struct recptypes *recps,     /* recipients (if mail) */
3001                    const char *force,           /* force a particular room? */
3002                    int flags                    /* should the message be exported clean? */
3003         )
3004 {
3005         char submit_filename[128];
3006         char generated_timestamp[32];
3007         char hold_rm[ROOMNAMELEN];
3008         char actual_rm[ROOMNAMELEN];
3009         char force_room[ROOMNAMELEN];
3010         char content_type[SIZ];                 /* We have to learn this */
3011         char recipient[SIZ];
3012         long newmsgid;
3013         const char *mptr = NULL;
3014         struct ctdluser userbuf;
3015         int a, i;
3016         struct MetaData smi;
3017         FILE *network_fp = NULL;
3018         static int seqnum = 1;
3019         struct CtdlMessage *imsg = NULL;
3020         char *instr = NULL;
3021         size_t instr_alloc = 0;
3022         struct ser_ret smr;
3023         char *hold_R, *hold_D;
3024         char *collected_addresses = NULL;
3025         struct addresses_to_be_filed *aptr = NULL;
3026         StrBuf *saved_rfc822_version = NULL;
3027         int qualified_for_journaling = 0;
3028         CitContext *CCC = MyContext();
3029         char bounce_to[1024] = "";
3030         size_t tmp = 0;
3031         int rv = 0;
3032
3033         syslog(LOG_DEBUG, "CtdlSubmitMsg() called\n");
3034         if (is_valid_message(msg) == 0) return(-1);     /* self check */
3035
3036         /* If this message has no timestamp, we take the liberty of
3037          * giving it one, right now.
3038          */
3039         if (msg->cm_fields['T'] == NULL) {
3040                 snprintf(generated_timestamp, sizeof generated_timestamp, "%ld", (long)time(NULL));
3041                 msg->cm_fields['T'] = strdup(generated_timestamp);
3042         }
3043
3044         /* If this message has no path, we generate one.
3045          */
3046         if (msg->cm_fields['P'] == NULL) {
3047                 if (msg->cm_fields['A'] != NULL) {
3048                         msg->cm_fields['P'] = strdup(msg->cm_fields['A']);
3049                         for (a=0; !IsEmptyStr(&msg->cm_fields['P'][a]); ++a) {
3050                                 if (isspace(msg->cm_fields['P'][a])) {
3051                                         msg->cm_fields['P'][a] = ' ';
3052                                 }
3053                         }
3054                 }
3055                 else {
3056                         msg->cm_fields['P'] = strdup("unknown");
3057                 }
3058         }
3059
3060         if (force == NULL) {
3061                 strcpy(force_room, "");
3062         }
3063         else {
3064                 strcpy(force_room, force);
3065         }
3066
3067         /* Learn about what's inside, because it's what's inside that counts */
3068         if (msg->cm_fields['M'] == NULL) {
3069                 syslog(LOG_ERR, "ERROR: attempt to save message with NULL body\n");
3070                 return(-2);
3071         }
3072
3073         switch (msg->cm_format_type) {
3074         case 0:
3075                 strcpy(content_type, "text/x-citadel-variformat");
3076                 break;
3077         case 1:
3078                 strcpy(content_type, "text/plain");
3079                 break;
3080         case 4:
3081                 strcpy(content_type, "text/plain");
3082                 mptr = bmstrcasestr(msg->cm_fields['M'], "Content-type:");
3083                 if (mptr != NULL) {
3084                         char *aptr;
3085                         safestrncpy(content_type, &mptr[13], sizeof content_type);
3086                         striplt(content_type);
3087                         aptr = content_type;
3088                         while (!IsEmptyStr(aptr)) {
3089                                 if ((*aptr == ';')
3090                                     || (*aptr == ' ')
3091                                     || (*aptr == 13)
3092                                     || (*aptr == 10)) {
3093                                         *aptr = 0;
3094                                 }
3095                                 else aptr++;
3096                         }
3097                 }
3098         }
3099
3100         /* Goto the correct room */
3101         syslog(LOG_DEBUG, "Selected room %s\n", (recps) ? CCC->room.QRname : SENTITEMS);
3102         strcpy(hold_rm, CCC->room.QRname);
3103         strcpy(actual_rm, CCC->room.QRname);
3104         if (recps != NULL) {
3105                 strcpy(actual_rm, SENTITEMS);
3106         }
3107
3108         /* If the user is a twit, move to the twit room for posting */
3109         if (TWITDETECT) {
3110                 if (CCC->user.axlevel == AxProbU) {
3111                         strcpy(hold_rm, actual_rm);
3112                         strcpy(actual_rm, config.c_twitroom);
3113                         syslog(LOG_DEBUG, "Diverting to twit room\n");
3114                 }
3115         }
3116
3117         /* ...or if this message is destined for Aide> then go there. */
3118         if (!IsEmptyStr(force_room)) {
3119                 strcpy(actual_rm, force_room);
3120         }
3121
3122         syslog(LOG_DEBUG, "Final selection: %s\n", actual_rm);
3123         if (strcasecmp(actual_rm, CCC->room.QRname)) {
3124                 /* CtdlGetRoom(&CCC->room, actual_rm); */
3125                 CtdlUserGoto(actual_rm, 0, 1, NULL, NULL);
3126         }
3127
3128         /*
3129          * If this message has no O (room) field, generate one.
3130          */
3131         if (msg->cm_fields['O'] == NULL) {
3132                 msg->cm_fields['O'] = strdup(CCC->room.QRname);
3133         }
3134
3135         /* Perform "before save" hooks (aborting if any return nonzero) */
3136         syslog(LOG_DEBUG, "Performing before-save hooks\n");
3137         if (PerformMessageHooks(msg, EVT_BEFORESAVE) > 0) return(-3);
3138
3139         /*
3140          * If this message has an Exclusive ID, and the room is replication
3141          * checking enabled, then do replication checks.
3142          */
3143         if (DoesThisRoomNeedEuidIndexing(&CCC->room)) {
3144                 ReplicationChecks(msg);
3145         }
3146
3147         /* Save it to disk */
3148         syslog(LOG_DEBUG, "Saving to disk\n");
3149         newmsgid = send_message(msg);
3150         if (newmsgid <= 0L) return(-5);
3151
3152         /* Write a supplemental message info record.  This doesn't have to
3153          * be a critical section because nobody else knows about this message
3154          * yet.
3155          */
3156         syslog(LOG_DEBUG, "Creating MetaData record\n");
3157         memset(&smi, 0, sizeof(struct MetaData));
3158         smi.meta_msgnum = newmsgid;
3159         smi.meta_refcount = 0;
3160         safestrncpy(smi.meta_content_type, content_type,
3161                     sizeof smi.meta_content_type);
3162
3163         /*
3164          * Measure how big this message will be when rendered as RFC822.
3165          * We do this for two reasons:
3166          * 1. We need the RFC822 length for the new metadata record, so the
3167          *    POP and IMAP services don't have to calculate message lengths
3168          *    while the user is waiting (multiplied by potentially hundreds
3169          *    or thousands of messages).
3170          * 2. If journaling is enabled, we will need an RFC822 version of the
3171          *    message to attach to the journalized copy.
3172          */
3173         if (CCC->redirect_buffer != NULL) {
3174                 syslog(LOG_ALERT, "CCC->redirect_buffer is not NULL during message submission!\n");
3175                 abort();
3176         }
3177         CCC->redirect_buffer = NewStrBufPlain(NULL, SIZ);
3178         CtdlOutputPreLoadedMsg(msg, MT_RFC822, HEADERS_ALL, 0, 1, QP_EADDR);
3179         smi.meta_rfc822_length = StrLength(CCC->redirect_buffer);
3180         saved_rfc822_version = CCC->redirect_buffer;
3181         CCC->redirect_buffer = NULL;
3182
3183         PutMetaData(&smi);
3184
3185         /* Now figure out where to store the pointers */
3186         syslog(LOG_DEBUG, "Storing pointers\n");
3187
3188         /* If this is being done by the networker delivering a private
3189          * message, we want to BYPASS saving the sender's copy (because there
3190          * is no local sender; it would otherwise go to the Trashcan).
3191          */
3192         if ((!CCC->internal_pgm) || (recps == NULL)) {
3193                 if (CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 1, msg) != 0) {
3194                         syslog(LOG_ERR, "ERROR saving message pointer!\n");
3195                         CtdlSaveMsgPointerInRoom(config.c_aideroom, newmsgid, 0, msg);
3196                 }
3197         }
3198
3199         /* For internet mail, drop a copy in the outbound queue room */
3200         if ((recps != NULL) && (recps->num_internet > 0)) {
3201                 CtdlSaveMsgPointerInRoom(SMTP_SPOOLOUT_ROOM, newmsgid, 0, msg);
3202         }
3203
3204         /* If other rooms are specified, drop them there too. */
3205         if ((recps != NULL) && (recps->num_room > 0))
3206                 for (i=0; i<num_tokens(recps->recp_room, '|'); ++i) {
3207                         extract_token(recipient, recps->recp_room, i,
3208                                       '|', sizeof recipient);
3209                         syslog(LOG_DEBUG, "Delivering to room <%s>\n", recipient);
3210                         CtdlSaveMsgPointerInRoom(recipient, newmsgid, 0, msg);
3211                 }
3212
3213         /* Bump this user's messages posted counter. */
3214         syslog(LOG_DEBUG, "Updating user\n");
3215         CtdlGetUserLock(&CCC->user, CCC->curr_user);
3216         CCC->user.posted = CCC->user.posted + 1;
3217         CtdlPutUserLock(&CCC->user);
3218
3219         /* Decide where bounces need to be delivered */
3220         if ((recps != NULL) && (recps->bounce_to != NULL)) {
3221                 safestrncpy(bounce_to, recps->bounce_to, sizeof bounce_to);
3222         }
3223         else if (CCC->logged_in) {
3224                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", CCC->user.fullname, config.c_nodename);
3225         }
3226         else {
3227                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", msg->cm_fields['A'], msg->cm_fields['N']);
3228         }
3229
3230         /* If this is private, local mail, make a copy in the
3231          * recipient's mailbox and bump the reference count.
3232          */
3233         if ((recps != NULL) && (recps->num_local > 0))
3234                 for (i=0; i<num_tokens(recps->recp_local, '|'); ++i) {
3235                         extract_token(recipient, recps->recp_local, i,
3236                                       '|', sizeof recipient);
3237                         syslog(LOG_DEBUG, "Delivering private local mail to <%s>\n",
3238                                recipient);
3239                         if (CtdlGetUser(&userbuf, recipient) == 0) {
3240                                 CtdlMailboxName(actual_rm, sizeof actual_rm, &userbuf, MAILROOM);
3241                                 CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 0, msg);
3242                                 CtdlBumpNewMailCounter(userbuf.usernum);
3243                                 if (!IsEmptyStr(config.c_funambol_host) || !IsEmptyStr(config.c_pager_program)) {
3244                                         /* Generate a instruction message for the Funambol notification
3245                                          * server, in the same style as the SMTP queue
3246                                          */
3247                                         instr_alloc = 1024;
3248                                         instr = malloc(instr_alloc);
3249                                         snprintf(instr, instr_alloc,
3250                                                  "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
3251                                                  "bounceto|%s\n",
3252                                                  SPOOLMIME, newmsgid, (long)time(NULL),
3253                                                  bounce_to
3254                                                 );
3255
3256                                         imsg = malloc(sizeof(struct CtdlMessage));
3257                                         memset(imsg, 0, sizeof(struct CtdlMessage));
3258                                         imsg->cm_magic = CTDLMESSAGE_MAGIC;
3259                                         imsg->cm_anon_type = MES_NORMAL;
3260                                         imsg->cm_format_type = FMT_RFC822;
3261                                         imsg->cm_fields['U'] = strdup("QMSG");
3262                                         imsg->cm_fields['A'] = strdup("Citadel");
3263                                         imsg->cm_fields['J'] = strdup("do not journal");
3264                                         imsg->cm_fields['M'] = instr;   /* imsg owns this memory now */
3265                                         imsg->cm_fields['2'] = strdup(recipient);
3266                                         CtdlSubmitMsg(imsg, NULL, FNBL_QUEUE_ROOM, 0);
3267                                         CtdlFreeMessage(imsg);
3268                                 }
3269                         }
3270                         else {
3271                                 syslog(LOG_DEBUG, "No user <%s>\n", recipient);
3272                                 CtdlSaveMsgPointerInRoom(config.c_aideroom, newmsgid, 0, msg);
3273                         }
3274                 }
3275
3276         /* Perform "after save" hooks */
3277         syslog(LOG_DEBUG, "Performing after-save hooks\n");
3278         if (msg->cm_fields['3'] != NULL) free(msg->cm_fields['3']);
3279         msg->cm_fields['3'] = malloc(20);
3280         snprintf(msg->cm_fields['3'], 20, "%ld", newmsgid);
3281         PerformMessageHooks(msg, EVT_AFTERSAVE);
3282         free(msg->cm_fields['3']);
3283         msg->cm_fields['3'] = NULL;
3284
3285         /* For IGnet mail, we have to save a new copy into the spooler for
3286          * each recipient, with the R and D fields set to the recipient and
3287          * destination-node.  This has two ugly side effects: all other
3288          * recipients end up being unlisted in this recipient's copy of the
3289          * message, and it has to deliver multiple messages to the same
3290          * node.  We'll revisit this again in a year or so when everyone has
3291          * a network spool receiver that can handle the new style messages.
3292          */
3293         if ((recps != NULL) && (recps->num_ignet > 0))
3294                 for (i=0; i<num_tokens(recps->recp_ignet, '|'); ++i) {
3295                         extract_token(recipient, recps->recp_ignet, i,
3296                                       '|', sizeof recipient);
3297
3298                         hold_R = msg->cm_fields['R'];
3299                         hold_D = msg->cm_fields['D'];
3300                         msg->cm_fields['R'] = malloc(SIZ);
3301                         msg->cm_fields['D'] = malloc(128);
3302                         extract_token(msg->cm_fields['R'], recipient, 0, '@', SIZ);
3303                         extract_token(msg->cm_fields['D'], recipient, 1, '@', 128);
3304
3305                         serialize_message(&smr, msg);
3306                         if (smr.len > 0) {
3307                                 snprintf(submit_filename, sizeof submit_filename,
3308                                          "%s/netmail.%04lx.%04x.%04x",
3309                                          ctdl_netin_dir,
3310                                          (long) getpid(), CCC->cs_pid, ++seqnum);
3311                                 network_fp = fopen(submit_filename, "wb+");
3312                                 if (network_fp != NULL) {
3313                                         rv = fwrite(smr.ser, smr.len, 1, network_fp);
3314                                         if (rv == -1) {
3315                                                 syslog(LOG_EMERG, "CtdlSubmitMsg(): Couldn't write network spool file: %s\n",
3316                                                        strerror(errno));
3317                                         }
3318                                         fclose(network_fp);
3319                                 }
3320                                 free(smr.ser);
3321                         }
3322
3323                         free(msg->cm_fields['R']);
3324                         free(msg->cm_fields['D']);
3325                         msg->cm_fields['R'] = hold_R;
3326                         msg->cm_fields['D'] = hold_D;
3327                 }
3328
3329         /* Go back to the room we started from */
3330         syslog(LOG_DEBUG, "Returning to original room %s\n", hold_rm);
3331         if (strcasecmp(hold_rm, CCC->room.QRname))
3332                 CtdlUserGoto(hold_rm, 0, 1, NULL, NULL);
3333
3334         /* For internet mail, generate delivery instructions.
3335          * Yes, this is recursive.  Deal with it.  Infinite recursion does
3336          * not happen because the delivery instructions message does not
3337          * contain a recipient.
3338          */
3339         if ((recps != NULL) && (recps->num_internet > 0)) {
3340                 syslog(LOG_DEBUG, "Generating delivery instructions\n");
3341                 instr_alloc = 1024;
3342                 instr = malloc(instr_alloc);
3343                 snprintf(instr, instr_alloc,
3344                          "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
3345                          "bounceto|%s\n",
3346                          SPOOLMIME, newmsgid, (long)time(NULL),
3347                          bounce_to
3348                         );
3349
3350                 if (recps->envelope_from != NULL) {
3351                         tmp = strlen(instr);
3352                         snprintf(&instr[tmp], instr_alloc-tmp, "envelope_from|%s\n", recps->envelope_from);
3353                 }
3354
3355                 for (i=0; i<num_tokens(recps->recp_internet, '|'); ++i) {
3356                         tmp = strlen(instr);
3357                         extract_token(recipient, recps->recp_internet, i, '|', sizeof recipient);
3358                         if ((tmp + strlen(recipient) + 32) > instr_alloc) {
3359                                 instr_alloc = instr_alloc * 2;
3360                                 instr = realloc(instr, instr_alloc);
3361                         }
3362                         snprintf(&instr[tmp], instr_alloc - tmp, "remote|%s|0||\n", recipient);
3363                 }
3364
3365                 imsg = malloc(sizeof(struct CtdlMessage));
3366                 memset(imsg, 0, sizeof(struct CtdlMessage));
3367                 imsg->cm_magic = CTDLMESSAGE_MAGIC;
3368                 imsg->cm_anon_type = MES_NORMAL;
3369                 imsg->cm_format_type = FMT_RFC822;
3370                 imsg->cm_fields['U'] = strdup("QMSG");
3371                 imsg->cm_fields['A'] = strdup("Citadel");
3372                 imsg->cm_fields['J'] = strdup("do not journal");
3373                 imsg->cm_fields['M'] = instr;   /* imsg owns this memory now */
3374                 CtdlSubmitMsg(imsg, NULL, SMTP_SPOOLOUT_ROOM, QP_EADDR);
3375                 CtdlFreeMessage(imsg);
3376         }
3377
3378         /*
3379          * Any addresses to harvest for someone's address book?
3380          */
3381         if ( (CCC->logged_in) && (recps != NULL) ) {
3382                 collected_addresses = harvest_collected_addresses(msg);
3383         }
3384
3385         if (collected_addresses != NULL) {
3386                 aptr = (struct addresses_to_be_filed *)
3387                         malloc(sizeof(struct addresses_to_be_filed));
3388                 CtdlMailboxName(actual_rm, sizeof actual_rm,
3389                                 &CCC->user, USERCONTACTSROOM);
3390                 aptr->roomname = strdup(actual_rm);
3391                 aptr->collected_addresses = collected_addresses;
3392                 begin_critical_section(S_ATBF);
3393                 aptr->next = atbf;
3394                 atbf = aptr;
3395                 end_critical_section(S_ATBF);
3396         }
3397
3398         /*
3399          * Determine whether this message qualifies for journaling.
3400          */
3401         if (msg->cm_fields['J'] != NULL) {
3402                 qualified_for_journaling = 0;
3403         }
3404         else {
3405                 if (recps == NULL) {
3406                         qualified_for_journaling = config.c_journal_pubmsgs;
3407                 }
3408                 else if (recps->num_local + recps->num_ignet + recps->num_internet > 0) {
3409                         qualified_for_journaling = config.c_journal_email;
3410                 }
3411                 else {
3412                         qualified_for_journaling = config.c_journal_pubmsgs;
3413                 }
3414         }
3415
3416         /*
3417          * Do we have to perform journaling?  If so, hand off the saved
3418          * RFC822 version will be handed off to the journaler for background
3419          * submit.  Otherwise, we have to free the memory ourselves.
3420          */
3421         if (saved_rfc822_version != NULL) {
3422                 if (qualified_for_journaling) {
3423                         JournalBackgroundSubmit(msg, saved_rfc822_version, recps);
3424                 }
3425                 else {
3426                         FreeStrBuf(&saved_rfc822_version);
3427                 }
3428         }
3429
3430         /* Done. */
3431         return(newmsgid);
3432 }
3433
3434
3435
3436 void aide_message (char *text, char *subject)
3437 {
3438         quickie_message("Citadel",NULL,NULL,AIDEROOM,text,FMT_CITADEL,subject);
3439 }
3440
3441
3442 /*
3443  * Convenience function for generating small administrative messages.
3444  */
3445 void quickie_message(const char *from, const char *fromaddr, char *to, char *room, const char *text,
3446                      int format_type, const char *subject)
3447 {
3448         struct CtdlMessage *msg;
3449         struct recptypes *recp = NULL;
3450
3451         msg = malloc(sizeof(struct CtdlMessage));
3452         memset(msg, 0, sizeof(struct CtdlMessage));
3453         msg->cm_magic = CTDLMESSAGE_MAGIC;
3454         msg->cm_anon_type = MES_NORMAL;
3455         msg->cm_format_type = format_type;
3456
3457         if (from != NULL) {
3458                 msg->cm_fields['A'] = strdup(from);
3459         }
3460         else if (fromaddr != NULL) {
3461                 msg->cm_fields['A'] = strdup(fromaddr);
3462                 if (strchr(msg->cm_fields['A'], '@')) {
3463                         *strchr(msg->cm_fields['A'], '@') = 0;
3464                 }
3465         }
3466         else {
3467                 msg->cm_fields['A'] = strdup("Citadel");
3468         }
3469
3470         if (fromaddr != NULL) msg->cm_fields['F'] = strdup(fromaddr);
3471         if (room != NULL) msg->cm_fields['O'] = strdup(room);
3472         msg->cm_fields['N'] = strdup(NODENAME);
3473         if (to != NULL) {
3474                 msg->cm_fields['R'] = strdup(to);
3475                 recp = validate_recipients(to, NULL, 0);
3476         }
3477         if (subject != NULL) {
3478                 msg->cm_fields['U'] = strdup(subject);
3479         }
3480         msg->cm_fields['M'] = strdup(text);
3481
3482         CtdlSubmitMsg(msg, recp, room, 0);
3483         CtdlFreeMessage(msg);
3484         if (recp != NULL) free_recipients(recp);
3485 }
3486
3487
3488
3489 /*
3490  * Back end function used by CtdlMakeMessage() and similar functions
3491  */
3492 StrBuf *CtdlReadMessageBodyBuf(char *terminator,        /* token signalling EOT */
3493                                long tlen,
3494                                size_t maxlen,           /* maximum message length */
3495                                char *exist,             /* if non-null, append to it;
3496                                                            exist is ALWAYS freed  */
3497                                int crlf,                /* CRLF newlines instead of LF */
3498                                int *sock                /* socket handle or 0 for this session's client socket */
3499         )
3500 {
3501         StrBuf *Message;
3502         StrBuf *LineBuf;
3503         int flushing = 0;
3504         int finished = 0;
3505         int dotdot = 0;
3506
3507         LineBuf = NewStrBufPlain(NULL, SIZ);
3508         if (exist == NULL) {
3509                 Message = NewStrBufPlain(NULL, 4 * SIZ);
3510         }
3511         else {
3512                 Message = NewStrBufPlain(exist, -1);
3513                 free(exist);
3514         }
3515
3516         /* Do we need to change leading ".." to "." for SMTP escaping? */
3517         if ((tlen == 1) && (*terminator == '.')) {
3518                 dotdot = 1;
3519         }
3520
3521         /* read in the lines of message text one by one */
3522         do {
3523                 if (sock != NULL) {
3524                         if ((CtdlSockGetLine(sock, LineBuf, 5) < 0) ||
3525                             (*sock == -1))
3526                                 finished = 1;
3527                 }
3528                 else {
3529                         if (CtdlClientGetLine(LineBuf) < 0) finished = 1;
3530                 }
3531                 if ((StrLength(LineBuf) == tlen) &&
3532                     (!strcmp(ChrPtr(LineBuf), terminator)))
3533                         finished = 1;
3534
3535                 if ( (!flushing) && (!finished) ) {
3536                         if (crlf) {
3537                                 StrBufAppendBufPlain(LineBuf, HKEY("\r\n"), 0);
3538                         }
3539                         else {
3540                                 StrBufAppendBufPlain(LineBuf, HKEY("\n"), 0);
3541                         }
3542
3543                         /* Unescape SMTP-style input of two dots at the beginning of the line */
3544                         if ((dotdot) &&
3545                             (StrLength(LineBuf) == 2) &&
3546                             (!strcmp(ChrPtr(LineBuf), "..")))
3547                         {
3548                                 StrBufCutLeft(LineBuf, 1);
3549                         }
3550
3551                         StrBufAppendBuf(Message, LineBuf, 0);
3552                 }
3553
3554                 /* if we've hit the max msg length, flush the rest */
3555                 if (StrLength(Message) >= maxlen) flushing = 1;
3556
3557         } while (!finished);
3558         FreeStrBuf(&LineBuf);
3559         return Message;
3560 }
3561
3562 void DeleteAsyncMsg(ReadAsyncMsg **Msg)
3563 {
3564         if (*Msg == NULL)
3565                 return;
3566         FreeStrBuf(&(*Msg)->MsgBuf);
3567
3568         free(*Msg);
3569         *Msg = NULL;
3570 }
3571
3572 ReadAsyncMsg *NewAsyncMsg(const char *terminator,       /* token signalling EOT */
3573                           long tlen,
3574                           size_t maxlen,                /* maximum message length */
3575                           size_t expectlen,             /* if we expect a message, how long should it be? */
3576                           char *exist,                  /* if non-null, append to it;
3577                                                            exist is ALWAYS freed  */
3578                           long eLen,                    /* length of exist */
3579                           int crlf                      /* CRLF newlines instead of LF */
3580         )
3581 {
3582         ReadAsyncMsg *NewMsg;
3583
3584         NewMsg = (ReadAsyncMsg *)malloc(sizeof(ReadAsyncMsg));
3585         memset(NewMsg, 0, sizeof(ReadAsyncMsg));
3586
3587         if (exist == NULL) {
3588                 long len;
3589
3590                 if (expectlen == 0) {
3591                         len = 4 * SIZ;
3592                 }
3593                 else {
3594                         len = expectlen + 10;
3595                 }
3596                 NewMsg->MsgBuf = NewStrBufPlain(NULL, len);
3597         }
3598         else {
3599                 NewMsg->MsgBuf = NewStrBufPlain(exist, eLen);
3600                 free(exist);
3601         }
3602         /* Do we need to change leading ".." to "." for SMTP escaping? */
3603         if ((tlen == 1) && (*terminator == '.')) {
3604                 NewMsg->dodot = 1;
3605         }
3606
3607         NewMsg->terminator = terminator;
3608         NewMsg->tlen = tlen;
3609
3610         NewMsg->maxlen = maxlen;
3611
3612         NewMsg->crlf = crlf;
3613
3614         return NewMsg;
3615 }
3616
3617 /*
3618  * Back end function used by CtdlMakeMessage() and similar functions
3619  */
3620 eReadState CtdlReadMessageBodyAsync(AsyncIO *IO)
3621 {
3622         ReadAsyncMsg *ReadMsg;
3623         int MsgFinished = 0;
3624         eReadState Finished = eMustReadMore;
3625
3626 #ifdef BIGBAD_IODBG
3627         char fn [SIZ];
3628         FILE *fd;
3629         const char *pch = ChrPtr(IO->SendBuf.Buf);
3630         const char *pchh = IO->SendBuf.ReadWritePointer;
3631         long nbytes;
3632
3633         if (pchh == NULL)
3634                 pchh = pch;
3635
3636         nbytes = StrLength(IO->SendBuf.Buf) - (pchh - pch);
3637         snprintf(fn, SIZ, "/tmp/foolog_ev_%s.%d",
3638                  ((CitContext*)(IO->CitContext))->ServiceName,
3639                  IO->SendBuf.fd);
3640
3641         fd = fopen(fn, "a+");
3642 #endif
3643
3644         ReadMsg = IO->ReadMsg;
3645
3646         /* read in the lines of message text one by one */
3647         do {
3648                 Finished = StrBufChunkSipLine(IO->IOBuf, &IO->RecvBuf);
3649
3650                 switch (Finished) {
3651                 case eMustReadMore: /// read new from socket...
3652 #ifdef BIGBAD_IODBG
3653                         if (IO->RecvBuf.ReadWritePointer != NULL) {
3654                                 nbytes = StrLength(IO->RecvBuf.Buf) - (IO->RecvBuf.ReadWritePointer - ChrPtr(IO->RecvBuf.Buf));
3655                                 fprintf(fd, "Read; Line unfinished: %ld Bytes still in buffer [", nbytes);
3656
3657                                 fwrite(IO->RecvBuf.ReadWritePointer, nbytes, 1, fd);
3658
3659                                 fprintf(fd, "]\n");
3660                         } else {
3661                                 fprintf(fd, "BufferEmpty! \n");
3662                         }
3663                         fclose(fd);
3664 #endif
3665                         return Finished;
3666                     break;
3667                 case eBufferNotEmpty: /* shouldn't happen... */
3668                 case eReadSuccess: /// done for now...
3669                     break;
3670                 case eReadFail: /// WHUT?
3671                     ///todo: shut down!
3672                         break;
3673                 }
3674
3675
3676                 if ((StrLength(IO->IOBuf) == ReadMsg->tlen) &&
3677                     (!strcmp(ChrPtr(IO->IOBuf), ReadMsg->terminator))) {
3678                         MsgFinished = 1;
3679 #ifdef BIGBAD_IODBG
3680                         fprintf(fd, "found Terminator; Message Size: %d\n", StrLength(ReadMsg->MsgBuf));
3681 #endif
3682                 }
3683                 else if (!ReadMsg->flushing) {
3684
3685 #ifdef BIGBAD_IODBG
3686                         fprintf(fd, "Read Line: [%d][%s]\n", StrLength(IO->IOBuf), ChrPtr(IO->IOBuf));
3687 #endif
3688
3689                         /* Unescape SMTP-style input of two dots at the beginning of the line */
3690                         if ((ReadMsg->dodot) &&
3691                             (StrLength(IO->IOBuf) == 2) &&  /* TODO: do we just unescape lines with two dots or any line? */
3692                             (!strcmp(ChrPtr(IO->IOBuf), "..")))
3693                         {
3694 #ifdef BIGBAD_IODBG
3695                                 fprintf(fd, "UnEscaped!\n");
3696 #endif
3697                                 StrBufCutLeft(IO->IOBuf, 1);
3698                         }
3699
3700                         if (ReadMsg->crlf) {
3701                                 StrBufAppendBufPlain(IO->IOBuf, HKEY("\r\n"), 0);
3702                         }
3703                         else {
3704                                 StrBufAppendBufPlain(IO->IOBuf, HKEY("\n"), 0);
3705                         }
3706
3707                         StrBufAppendBuf(ReadMsg->MsgBuf, IO->IOBuf, 0);
3708                 }
3709
3710                 /* if we've hit the max msg length, flush the rest */
3711                 if (StrLength(ReadMsg->MsgBuf) >= ReadMsg->maxlen) ReadMsg->flushing = 1;
3712
3713         } while (!MsgFinished);
3714
3715 #ifdef BIGBAD_IODBG
3716         fprintf(fd, "Done with reading; %s.\n, ",
3717                 (MsgFinished)?"Message Finished": "FAILED");
3718         fclose(fd);
3719 #endif
3720         if (MsgFinished)
3721                 return eReadSuccess;
3722         else
3723                 return eAbort;
3724 }
3725
3726
3727 /*
3728  * Back end function used by CtdlMakeMessage() and similar functions
3729  */
3730 char *CtdlReadMessageBody(char *terminator,     /* token signalling EOT */
3731                           long tlen,
3732                           size_t maxlen,                /* maximum message length */
3733                           char *exist,          /* if non-null, append to it;
3734                                                    exist is ALWAYS freed  */
3735                           int crlf,             /* CRLF newlines instead of LF */
3736                           int *sock             /* socket handle or 0 for this session's client socket */
3737         )
3738 {
3739         StrBuf *Message;
3740
3741         Message = CtdlReadMessageBodyBuf(terminator,
3742                                          tlen,
3743                                          maxlen,
3744                                          exist,
3745                                          crlf,
3746                                          sock);
3747         if (Message == NULL)
3748                 return NULL;
3749         else
3750                 return SmashStrBuf(&Message);
3751 }
3752
3753
3754 /*
3755  * Build a binary message to be saved on disk.
3756  * (NOTE: if you supply 'preformatted_text', the buffer you give it
3757  * will become part of the message.  This means you are no longer
3758  * responsible for managing that memory -- it will be freed along with
3759  * the rest of the fields when CtdlFreeMessage() is called.)
3760  */
3761
3762 struct CtdlMessage *CtdlMakeMessage(
3763         struct ctdluser *author,        /* author's user structure */
3764         char *recipient,                /* NULL if it's not mail */
3765         char *recp_cc,                  /* NULL if it's not mail */
3766         char *room,                     /* room where it's going */
3767         int type,                       /* see MES_ types in header file */
3768         int format_type,                /* variformat, plain text, MIME... */
3769         char *fake_name,                /* who we're masquerading as */
3770         char *my_email,                 /* which of my email addresses to use (empty is ok) */
3771         char *subject,                  /* Subject (optional) */
3772         char *supplied_euid,            /* ...or NULL if this is irrelevant */
3773         char *preformatted_text,        /* ...or NULL to read text from client */
3774         char *references                /* Thread references */
3775         ) {
3776         char dest_node[256];
3777         char buf[1024];
3778         struct CtdlMessage *msg;
3779         StrBuf *FakeAuthor;
3780         StrBuf *FakeEncAuthor = NULL;
3781
3782         msg = malloc(sizeof(struct CtdlMessage));
3783         memset(msg, 0, sizeof(struct CtdlMessage));
3784         msg->cm_magic = CTDLMESSAGE_MAGIC;
3785         msg->cm_anon_type = type;
3786         msg->cm_format_type = format_type;
3787
3788         /* Don't confuse the poor folks if it's not routed mail. */
3789         strcpy(dest_node, "");
3790
3791         if (recipient != NULL) striplt(recipient);
3792         if (recp_cc != NULL) striplt(recp_cc);
3793
3794         /* Path or Return-Path */
3795         if (my_email == NULL) my_email = "";
3796
3797         if (!IsEmptyStr(my_email)) {
3798                 msg->cm_fields['P'] = strdup(my_email);
3799         }
3800         else {
3801                 snprintf(buf, sizeof buf, "%s", author->fullname);
3802                 msg->cm_fields['P'] = strdup(buf);
3803         }
3804         convert_spaces_to_underscores(msg->cm_fields['P']);
3805
3806         snprintf(buf, sizeof buf, "%ld", (long)time(NULL));     /* timestamp */
3807         msg->cm_fields['T'] = strdup(buf);
3808
3809         if ((fake_name != NULL) && (fake_name[0])) {            /* author */
3810                 FakeAuthor = NewStrBufPlain (fake_name, -1);
3811         }
3812         else {
3813                 FakeAuthor = NewStrBufPlain (author->fullname, -1);
3814         }
3815         StrBufRFC2047encode(&FakeEncAuthor, FakeAuthor);
3816         msg->cm_fields['A'] = SmashStrBuf(&FakeEncAuthor);
3817         FreeStrBuf(&FakeAuthor);
3818
3819         if (CC->room.QRflags & QR_MAILBOX) {            /* room */
3820                 msg->cm_fields['O'] = strdup(&CC->room.QRname[11]);
3821         }
3822         else {
3823                 msg->cm_fields['O'] = strdup(CC->room.QRname);
3824         }
3825
3826         msg->cm_fields['N'] = strdup(NODENAME);         /* nodename */
3827         msg->cm_fields['H'] = strdup(HUMANNODE);                /* hnodename */
3828
3829         if ((recipient != NULL) && (recipient[0] != 0)) {
3830                 msg->cm_fields['R'] = strdup(recipient);
3831         }
3832         if ((recp_cc != NULL) && (recp_cc[0] != 0)) {
3833                 msg->cm_fields['Y'] = strdup(recp_cc);
3834         }
3835         if (dest_node[0] != 0) {
3836                 msg->cm_fields['D'] = strdup(dest_node);
3837         }
3838
3839         if (!IsEmptyStr(my_email)) {
3840                 msg->cm_fields['F'] = strdup(my_email);
3841         }
3842         else if ( (author == &CC->user) && (!IsEmptyStr(CC->cs_inet_email)) ) {
3843                 msg->cm_fields['F'] = strdup(CC->cs_inet_email);
3844         }
3845
3846         if (subject != NULL) {
3847                 long length;
3848                 striplt(subject);
3849                 length = strlen(subject);
3850                 if (length > 0) {
3851                         long i;
3852                         long IsAscii;
3853                         IsAscii = -1;
3854                         i = 0;
3855                         while ((subject[i] != '\0') &&
3856                                (IsAscii = isascii(subject[i]) != 0 ))
3857                                 i++;
3858                         if (IsAscii != 0)
3859                                 msg->cm_fields['U'] = strdup(subject);
3860                         else /* ok, we've got utf8 in the string. */
3861                         {
3862                                 msg->cm_fields['U'] = rfc2047encode(subject, length);
3863                         }
3864
3865                 }
3866         }
3867
3868         if (supplied_euid != NULL) {
3869                 msg->cm_fields['E'] = strdup(supplied_euid);
3870         }
3871
3872         if ((references != NULL) && (!IsEmptyStr(references))) {
3873                 if (msg->cm_fields['W'] != NULL)
3874                         free(msg->cm_fields['W']);
3875                 msg->cm_fields['W'] = strdup(references);
3876         }
3877
3878         if (preformatted_text != NULL) {
3879                 msg->cm_fields['M'] = preformatted_text;
3880         }
3881         else {
3882                 msg->cm_fields['M'] = CtdlReadMessageBody(HKEY("000"), config.c_maxmsglen, NULL, 0, 0);
3883         }
3884
3885         return(msg);
3886 }
3887
3888 extern int netconfig_check_roomaccess(
3889         char *errmsgbuf,
3890         size_t n,
3891         const char* RemoteIdentifier); /* TODO: find a smarter way */
3892
3893 /*
3894  * Check to see whether we have permission to post a message in the current
3895  * room.  Returns a *CITADEL ERROR CODE* and puts a message in errmsgbuf, or
3896  * returns 0 on success.
3897  */
3898 int CtdlDoIHavePermissionToPostInThisRoom(
3899         char *errmsgbuf,
3900         size_t n,
3901         const char* RemoteIdentifier,
3902         int PostPublic,
3903         int is_reply
3904         ) {
3905         int ra;
3906
3907         if (!(CC->logged_in) &&
3908             (PostPublic == POST_LOGGED_IN)) {
3909                 snprintf(errmsgbuf, n, "Not logged in.");
3910                 return (ERROR + NOT_LOGGED_IN);
3911         }
3912         else if (PostPublic == CHECK_EXISTANCE) {
3913                 return (0); // We're Evaling whether a recipient exists
3914         }
3915         else if (!(CC->logged_in)) {
3916
3917                 if ((CC->room.QRflags & QR_READONLY)) {
3918                         snprintf(errmsgbuf, n, "Not logged in.");
3919                         return (ERROR + NOT_LOGGED_IN);
3920                 }
3921                 if (CC->room.QRflags2 & QR2_MODERATED) {
3922                         snprintf(errmsgbuf, n, "Not logged in Moderation feature not yet implemented!");
3923                         return (ERROR + NOT_LOGGED_IN);
3924                 }
3925                 if ((PostPublic!=POST_LMTP) &&(CC->room.QRflags2 & QR2_SMTP_PUBLIC) == 0) {
3926
3927                         return netconfig_check_roomaccess(errmsgbuf, n, RemoteIdentifier);
3928                 }
3929                 return (0);
3930
3931         }
3932
3933         if ((CC->user.axlevel < AxProbU)
3934             && ((CC->room.QRflags & QR_MAILBOX) == 0)) {
3935                 snprintf(errmsgbuf, n, "Need to be validated to enter (except in %s> to sysop)", MAILROOM);
3936                 return (ERROR + HIGHER_ACCESS_REQUIRED);
3937         }
3938
3939         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
3940
3941         if (ra & UA_POSTALLOWED) {
3942                 strcpy(errmsgbuf, "OK to post or reply here");
3943                 return(0);
3944         }
3945
3946         if ( (ra & UA_REPLYALLOWED) && (is_reply) ) {
3947                 /*
3948                  * To be thorough, we ought to check to see if the message they are
3949                  * replying to is actually a valid one in this room, but unless this
3950                  * actually becomes a problem we'll go with high performance instead.
3951                  */
3952                 strcpy(errmsgbuf, "OK to reply here");
3953                 return(0);
3954         }
3955
3956         if ( (ra & UA_REPLYALLOWED) && (!is_reply) ) {
3957                 /* Clarify what happened with a better error message */
3958                 snprintf(errmsgbuf, n, "You may only reply to existing messages here.");
3959                 return (ERROR + HIGHER_ACCESS_REQUIRED);
3960         }
3961
3962         snprintf(errmsgbuf, n, "Higher access is required to post in this room.");
3963         return (ERROR + HIGHER_ACCESS_REQUIRED);
3964
3965 }
3966
3967
3968 /*
3969  * Check to see if the specified user has Internet mail permission
3970  * (returns nonzero if permission is granted)
3971  */
3972 int CtdlCheckInternetMailPermission(struct ctdluser *who) {
3973
3974         /* Do not allow twits to send Internet mail */
3975         if (who->axlevel <= AxProbU) return(0);
3976
3977         /* Globally enabled? */
3978         if (config.c_restrict == 0) return(1);
3979
3980         /* User flagged ok? */
3981         if (who->flags & US_INTERNET) return(2);
3982
3983         /* Aide level access? */
3984         if (who->axlevel >= AxAideU) return(3);
3985
3986         /* No mail for you! */
3987         return(0);
3988 }
3989
3990
3991 /*
3992  * Validate recipients, count delivery types and errors, and handle aliasing
3993  * FIXME check for dupes!!!!!
3994  *
3995  * Returns 0 if all addresses are ok, ret->num_error = -1 if no addresses
3996  * were specified, or the number of addresses found invalid.
3997  *
3998  * Caller needs to free the result using free_recipients()
3999  */
4000 struct recptypes *validate_recipients(const char *supplied_recipients,
4001                                       const char *RemoteIdentifier,
4002                                       int Flags) {
4003         struct recptypes *ret;
4004         char *recipients = NULL;
4005         char this_recp[256];
4006         char this_recp_cooked[256];
4007         char append[SIZ];
4008         int num_recps = 0;
4009         int i, j;
4010         int mailtype;
4011         int invalid;
4012         struct ctdluser tempUS;
4013         struct ctdlroom tempQR;
4014         struct ctdlroom tempQR2;
4015         int err = 0;
4016         char errmsg[SIZ];
4017         int in_quotes = 0;
4018
4019         /* Initialize */
4020         ret = (struct recptypes *) malloc(sizeof(struct recptypes));
4021         if (ret == NULL) return(NULL);
4022
4023         /* Set all strings to null and numeric values to zero */
4024         memset(ret, 0, sizeof(struct recptypes));
4025
4026         if (supplied_recipients == NULL) {
4027                 recipients = strdup("");
4028         }
4029         else {
4030                 recipients = strdup(supplied_recipients);
4031         }
4032
4033         /* Allocate some memory.  Yes, this allocates 500% more memory than we will
4034          * actually need, but it's healthier for the heap than doing lots of tiny
4035          * realloc() calls instead.
4036          */
4037
4038         ret->errormsg = malloc(strlen(recipients) + 1024);
4039         ret->recp_local = malloc(strlen(recipients) + 1024);
4040         ret->recp_internet = malloc(strlen(recipients) + 1024);
4041         ret->recp_ignet = malloc(strlen(recipients) + 1024);
4042         ret->recp_room = malloc(strlen(recipients) + 1024);
4043         ret->display_recp = malloc(strlen(recipients) + 1024);
4044
4045         ret->errormsg[0] = 0;
4046         ret->recp_local[0] = 0;
4047         ret->recp_internet[0] = 0;
4048         ret->recp_ignet[0] = 0;
4049         ret->recp_room[0] = 0;
4050         ret->display_recp[0] = 0;
4051
4052         ret->recptypes_magic = RECPTYPES_MAGIC;
4053
4054         /* Change all valid separator characters to commas */
4055         for (i=0; !IsEmptyStr(&recipients[i]); ++i) {
4056                 if ((recipients[i] == ';') || (recipients[i] == '|')) {
4057                         recipients[i] = ',';
4058                 }
4059         }
4060
4061         /* Now start extracting recipients... */
4062
4063         while (!IsEmptyStr(recipients)) {
4064
4065                 for (i=0; i<=strlen(recipients); ++i) {
4066                         if (recipients[i] == '\"') in_quotes = 1 - in_quotes;
4067                         if ( ( (recipients[i] == ',') && (!in_quotes) ) || (recipients[i] == 0) ) {
4068                                 safestrncpy(this_recp, recipients, i+1);
4069                                 this_recp[i] = 0;
4070                                 if (recipients[i] == ',') {
4071                                         strcpy(recipients, &recipients[i+1]);
4072                                 }
4073                                 else {
4074                                         strcpy(recipients, "");
4075                                 }
4076                                 break;
4077                         }
4078                 }
4079
4080                 striplt(this_recp);
4081                 if (IsEmptyStr(this_recp))
4082                         break;
4083                 syslog(LOG_DEBUG, "Evaluating recipient #%d: %s\n", num_recps, this_recp);
4084                 ++num_recps;
4085                 mailtype = alias(this_recp);
4086                 mailtype = alias(this_recp);
4087                 mailtype = alias(this_recp);
4088                 j = 0;
4089                 for (j=0; !IsEmptyStr(&this_recp[j]); ++j) {
4090                         if (this_recp[j]=='_') {
4091                                 this_recp_cooked[j] = ' ';
4092                         }
4093                         else {
4094                                 this_recp_cooked[j] = this_recp[j];
4095                         }
4096                 }
4097                 this_recp_cooked[j] = '\0';
4098                 invalid = 0;
4099                 errmsg[0] = 0;
4100                 switch(mailtype) {
4101                 case MES_LOCAL:
4102                         if (!strcasecmp(this_recp, "sysop")) {
4103                                 ++ret->num_room;
4104                                 strcpy(this_recp, config.c_aideroom);
4105                                 if (!IsEmptyStr(ret->recp_room)) {
4106                                         strcat(ret->recp_room, "|");
4107                                 }
4108                                 strcat(ret->recp_room, this_recp);
4109                         }
4110                         else if ( (!strncasecmp(this_recp, "room_", 5))
4111                                   && (!CtdlGetRoom(&tempQR, &this_recp_cooked[5])) ) {
4112
4113                                 /* Save room so we can restore it later */
4114                                 tempQR2 = CC->room;
4115                                 CC->room = tempQR;
4116
4117                                 /* Check permissions to send mail to this room */
4118                                 err = CtdlDoIHavePermissionToPostInThisRoom(
4119                                         errmsg,
4120                                         sizeof errmsg,
4121                                         RemoteIdentifier,
4122                                         Flags,
4123                                         0                       /* 0 = not a reply */
4124                                         );
4125                                 if (err)
4126                                 {
4127                                         ++ret->num_error;
4128                                         invalid = 1;
4129                                 }
4130                                 else {
4131                                         ++ret->num_room;
4132                                         if (!IsEmptyStr(ret->recp_room)) {
4133                                                 strcat(ret->recp_room, "|");
4134                                         }
4135                                         strcat(ret->recp_room, &this_recp_cooked[5]);
4136                                 }
4137
4138                                 /* Restore room in case something needs it */
4139                                 CC->room = tempQR2;
4140
4141                         }
4142                         else if (CtdlGetUser(&tempUS, this_recp) == 0) {
4143                                 ++ret->num_local;
4144                                 strcpy(this_recp, tempUS.fullname);
4145                                 if (!IsEmptyStr(ret->recp_local)) {
4146                                         strcat(ret->recp_local, "|");
4147                                 }
4148                                 strcat(ret->recp_local, this_recp);
4149                         }
4150                         else if (CtdlGetUser(&tempUS, this_recp_cooked) == 0) {
4151                                 ++ret->num_local;
4152                                 strcpy(this_recp, tempUS.fullname);
4153                                 if (!IsEmptyStr(ret->recp_local)) {
4154                                         strcat(ret->recp_local, "|");
4155                                 }
4156                                 strcat(ret->recp_local, this_recp);
4157                         }
4158                         else {
4159                                 ++ret->num_error;
4160                                 invalid = 1;
4161                         }
4162                         break;
4163                 case MES_INTERNET:
4164                         /* Yes, you're reading this correctly: if the target
4165                          * domain points back to the local system or an attached
4166                          * Citadel directory, the address is invalid.  That's
4167                          * because if the address were valid, we would have
4168                          * already translated it to a local address by now.
4169                          */
4170                         if (IsDirectory(this_recp, 0)) {
4171                                 ++ret->num_error;
4172                                 invalid = 1;
4173                         }
4174                         else {
4175                                 ++ret->num_internet;
4176                                 if (!IsEmptyStr(ret->recp_internet)) {
4177                                         strcat(ret->recp_internet, "|");
4178                                 }
4179                                 strcat(ret->recp_internet, this_recp);
4180                         }
4181                         break;
4182                 case MES_IGNET:
4183                         ++ret->num_ignet;
4184                         if (!IsEmptyStr(ret->recp_ignet)) {
4185                                 strcat(ret->recp_ignet, "|");
4186                         }
4187                         strcat(ret->recp_ignet, this_recp);
4188                         break;
4189                 case MES_ERROR:
4190                         ++ret->num_error;
4191                         invalid = 1;
4192                         break;
4193                 }
4194                 if (invalid) {
4195                         if (IsEmptyStr(errmsg)) {
4196                                 snprintf(append, sizeof append, "Invalid recipient: %s", this_recp);
4197                         }
4198                         else {
4199                                 snprintf(append, sizeof append, "%s", errmsg);
4200                         }
4201                         if ( (strlen(ret->errormsg) + strlen(append) + 3) < SIZ) {
4202                                 if (!IsEmptyStr(ret->errormsg)) {
4203                                         strcat(ret->errormsg, "; ");
4204                                 }
4205                                 strcat(ret->errormsg, append);
4206                         }
4207                 }
4208                 else {
4209                         if (IsEmptyStr(ret->display_recp)) {
4210                                 strcpy(append, this_recp);
4211                         }
4212                         else {
4213                                 snprintf(append, sizeof append, ", %s", this_recp);
4214                         }
4215                         if ( (strlen(ret->display_recp)+strlen(append)) < SIZ) {
4216                                 strcat(ret->display_recp, append);
4217                         }
4218                 }
4219         }
4220
4221         if ((ret->num_local + ret->num_internet + ret->num_ignet +
4222              ret->num_room + ret->num_error) == 0) {
4223                 ret->num_error = (-1);
4224                 strcpy(ret->errormsg, "No recipients specified.");
4225         }
4226
4227         syslog(LOG_DEBUG, "validate_recipients()\n");
4228         syslog(LOG_DEBUG, " local: %d <%s>\n", ret->num_local, ret->recp_local);
4229         syslog(LOG_DEBUG, "  room: %d <%s>\n", ret->num_room, ret->recp_room);
4230         syslog(LOG_DEBUG, "  inet: %d <%s>\n", ret->num_internet, ret->recp_internet);
4231         syslog(LOG_DEBUG, " ignet: %d <%s>\n", ret->num_ignet, ret->recp_ignet);
4232         syslog(LOG_DEBUG, " error: %d <%s>\n", ret->num_error, ret->errormsg);
4233
4234         free(recipients);
4235         return(ret);
4236 }
4237
4238
4239 /*
4240  * Destructor for struct recptypes
4241  */
4242 void free_recipients(struct recptypes *valid) {
4243
4244         if (valid == NULL) {
4245                 return;
4246         }
4247
4248         if (valid->recptypes_magic != RECPTYPES_MAGIC) {
4249                 syslog(LOG_EMERG, "Attempt to call free_recipients() on some other data type!\n");
4250                 abort();
4251         }
4252
4253         if (valid->errormsg != NULL)            free(valid->errormsg);
4254         if (valid->recp_local != NULL)          free(valid->recp_local);
4255         if (valid->recp_internet != NULL)       free(valid->recp_internet);
4256         if (valid->recp_ignet != NULL)          free(valid->recp_ignet);
4257         if (valid->recp_room != NULL)           free(valid->recp_room);
4258         if (valid->display_recp != NULL)        free(valid->display_recp);
4259         if (valid->bounce_to != NULL)           free(valid->bounce_to);
4260         if (valid->envelope_from != NULL)       free(valid->envelope_from);
4261         free(valid);
4262 }
4263
4264
4265
4266 /*
4267  * message entry  -  mode 0 (normal)
4268  */
4269 void cmd_ent0(char *entargs)
4270 {
4271         struct CitContext *CCC = CC;
4272         int post = 0;
4273         char recp[SIZ];
4274         char cc[SIZ];
4275         char bcc[SIZ];
4276         char supplied_euid[128];
4277         int anon_flag = 0;
4278         int format_type = 0;
4279         char newusername[256];
4280         char newuseremail[256];
4281         struct CtdlMessage *msg;
4282         int anonymous = 0;
4283         char errmsg[SIZ];
4284         int err = 0;
4285         struct recptypes *valid = NULL;
4286         struct recptypes *valid_to = NULL;
4287         struct recptypes *valid_cc = NULL;
4288         struct recptypes *valid_bcc = NULL;
4289         char subject[SIZ];
4290         int subject_required = 0;
4291         int do_confirm = 0;
4292         int verbose_reply = 0;
4293         long msgnum;
4294         int i, j;
4295         char buf[256];
4296         int newuseremail_ok = 0;
4297         char references[SIZ];
4298         char *ptr;
4299
4300         unbuffer_output();
4301
4302         post = extract_int(entargs, 0);
4303         extract_token(recp, entargs, 1, '|', sizeof recp);
4304         anon_flag = extract_int(entargs, 2);
4305         format_type = extract_int(entargs, 3);
4306         extract_token(subject, entargs, 4, '|', sizeof subject);
4307         extract_token(newusername, entargs, 5, '|', sizeof newusername);
4308         do_confirm = extract_int(entargs, 6);
4309         extract_token(cc, entargs, 7, '|', sizeof cc);
4310         extract_token(bcc, entargs, 8, '|', sizeof bcc);
4311         verbose_reply = extract_int(entargs, 9);
4312         switch(CC->room.QRdefaultview) {
4313         case VIEW_NOTES:
4314         case VIEW_WIKI:
4315                 extract_token(supplied_euid, entargs, 9, '|', sizeof supplied_euid);
4316                 break;
4317         default:
4318                 supplied_euid[0] = 0;
4319                 break;
4320         }
4321         extract_token(newuseremail, entargs, 10, '|', sizeof newuseremail);
4322         extract_token(references, entargs, 11, '|', sizeof references);
4323         for (ptr=references; *ptr != 0; ++ptr) {
4324                 if (*ptr == '!') *ptr = '|';
4325         }
4326
4327         /* first check to make sure the request is valid. */
4328
4329         err = CtdlDoIHavePermissionToPostInThisRoom(
4330                 errmsg,
4331                 sizeof errmsg,
4332                 NULL,
4333                 POST_LOGGED_IN,
4334                 (!IsEmptyStr(references))               /* is this a reply?  or a top-level post? */
4335                 );
4336         if (err)
4337         {
4338                 cprintf("%d %s\n", err, errmsg);
4339                 return;
4340         }
4341
4342         /* Check some other permission type things. */
4343
4344         if (IsEmptyStr(newusername)) {
4345                 strcpy(newusername, CCC->user.fullname);
4346         }
4347         if (  (CCC->user.axlevel < AxAideU)
4348               && (strcasecmp(newusername, CCC->user.fullname))
4349               && (strcasecmp(newusername, CCC->cs_inet_fn))
4350                 ) {
4351                 cprintf("%d You don't have permission to author messages as '%s'.\n",
4352                         ERROR + HIGHER_ACCESS_REQUIRED,
4353                         newusername
4354                         );
4355                 return;
4356         }
4357
4358
4359         if (IsEmptyStr(newuseremail)) {
4360                 newuseremail_ok = 1;
4361         }
4362
4363         if (!IsEmptyStr(newuseremail)) {
4364                 if (!strcasecmp(newuseremail, CCC->cs_inet_email)) {
4365                         newuseremail_ok = 1;
4366                 }
4367                 else if (!IsEmptyStr(CCC->cs_inet_other_emails)) {
4368                         j = num_tokens(CCC->cs_inet_other_emails, '|');
4369                         for (i=0; i<j; ++i) {
4370                                 extract_token(buf, CCC->cs_inet_other_emails, i, '|', sizeof buf);
4371                                 if (!strcasecmp(newuseremail, buf)) {
4372                                         newuseremail_ok = 1;
4373                                 }
4374                         }
4375                 }
4376         }
4377
4378         if (!newuseremail_ok) {
4379                 cprintf("%d You don't have permission to author messages as '%s'.\n",
4380                         ERROR + HIGHER_ACCESS_REQUIRED,
4381                         newuseremail
4382                         );
4383                 return;
4384         }
4385
4386         CCC->cs_flags |= CS_POSTING;
4387
4388         /* In mailbox rooms we have to behave a little differently --
4389          * make sure the user has specified at least one recipient.  Then
4390          * validate the recipient(s).  We do this for the Mail> room, as
4391          * well as any room which has the "Mailbox" view set - unless it
4392          * is the DRAFTS room which does not require recipients
4393          */
4394
4395         if ( (  ( (CCC->room.QRflags & QR_MAILBOX) && (!strcasecmp(&CCC->room.QRname[11], MAILROOM)) )
4396                 || ( (CCC->room.QRflags & QR_MAILBOX) && (CCC->curr_view == VIEW_MAILBOX) )
4397                      ) && (strcasecmp(&CCC->room.QRname[11], USERDRAFTROOM)) !=0 ) {
4398                 if (CCC->user.axlevel < AxProbU) {
4399                         strcpy(recp, "sysop");
4400                         strcpy(cc, "");
4401                         strcpy(bcc, "");
4402                 }
4403
4404                 valid_to = validate_recipients(recp, NULL, 0);
4405                 if (valid_to->num_error > 0) {
4406                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_to->errormsg);
4407                         free_recipients(valid_to);
4408                         return;
4409                 }
4410
4411                 valid_cc = validate_recipients(cc, NULL, 0);
4412                 if (valid_cc->num_error > 0) {
4413                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_cc->errormsg);
4414                         free_recipients(valid_to);
4415                         free_recipients(valid_cc);
4416                         return;
4417                 }
4418
4419                 valid_bcc = validate_recipients(bcc, NULL, 0);
4420                 if (valid_bcc->num_error > 0) {
4421                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_bcc->errormsg);
4422                         free_recipients(valid_to);
4423                         free_recipients(valid_cc);
4424                         free_recipients(valid_bcc);
4425                         return;
4426                 }
4427
4428                 /* Recipient required, but none were specified */
4429                 if ( (valid_to->num_error < 0) && (valid_cc->num_error < 0) && (valid_bcc->num_error < 0) ) {
4430                         free_recipients(valid_to);
4431                         free_recipients(valid_cc);
4432                         free_recipients(valid_bcc);
4433                         cprintf("%d At least one recipient is required.\n", ERROR + NO_SUCH_USER);
4434                         return;
4435                 }
4436
4437                 if (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0) {
4438                         if (CtdlCheckInternetMailPermission(&CCC->user)==0) {
4439                                 cprintf("%d You do not have permission "
4440                                         "to send Internet mail.\n",
4441                                         ERROR + HIGHER_ACCESS_REQUIRED);
4442                                 free_recipients(valid_to);
4443                                 free_recipients(valid_cc);
4444                                 free_recipients(valid_bcc);
4445                                 return;
4446                         }
4447                 }
4448
4449                 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)
4450                      && (CCC->user.axlevel < AxNetU) ) {
4451                         cprintf("%d Higher access required for network mail.\n",
4452                                 ERROR + HIGHER_ACCESS_REQUIRED);
4453                         free_recipients(valid_to);
4454                         free_recipients(valid_cc);
4455                         free_recipients(valid_bcc);
4456                         return;
4457                 }
4458
4459                 if ((RESTRICT_INTERNET == 1)
4460                     && (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0)
4461                     && ((CCC->user.flags & US_INTERNET) == 0)
4462                     && (!CCC->internal_pgm)) {
4463                         cprintf("%d You don't have access to Internet mail.\n",
4464                                 ERROR + HIGHER_ACCESS_REQUIRED);
4465                         free_recipients(valid_to);
4466                         free_recipients(valid_cc);
4467                         free_recipients(valid_bcc);
4468                         return;
4469                 }
4470
4471         }
4472
4473         /* Is this a room which has anonymous-only or anonymous-option? */
4474         anonymous = MES_NORMAL;
4475         if (CCC->room.QRflags & QR_ANONONLY) {
4476                 anonymous = MES_ANONONLY;
4477         }
4478         if (CCC->room.QRflags & QR_ANONOPT) {
4479                 if (anon_flag == 1) {   /* only if the user requested it */
4480                         anonymous = MES_ANONOPT;
4481                 }
4482         }
4483
4484         if ((CCC->room.QRflags & QR_MAILBOX) == 0) {
4485                 recp[0] = 0;
4486         }
4487
4488         /* Recommend to the client that the use of a message subject is
4489          * strongly recommended in this room, if either the SUBJECTREQ flag
4490          * is set, or if there is one or more Internet email recipients.
4491          */
4492         if (CCC->room.QRflags2 & QR2_SUBJECTREQ) subject_required = 1;
4493         if ((valid_to)  && (valid_to->num_internet > 0))        subject_required = 1;
4494         if ((valid_cc)  && (valid_cc->num_internet > 0))        subject_required = 1;
4495         if ((valid_bcc) && (valid_bcc->num_internet > 0))       subject_required = 1;
4496
4497         /* If we're only checking the validity of the request, return
4498          * success without creating the message.
4499          */
4500         if (post == 0) {
4501                 cprintf("%d %s|%d\n", CIT_OK,
4502                         ((valid_to != NULL) ? valid_to->display_recp : ""),
4503                         subject_required);
4504                 free_recipients(valid_to);
4505                 free_recipients(valid_cc);
4506                 free_recipients(valid_bcc);
4507                 return;
4508         }
4509
4510         /* We don't need these anymore because we'll do it differently below */
4511         free_recipients(valid_to);
4512         free_recipients(valid_cc);
4513         free_recipients(valid_bcc);
4514
4515         /* Read in the message from the client. */
4516         if (do_confirm) {
4517                 cprintf("%d send message\n", START_CHAT_MODE);
4518         } else {
4519                 cprintf("%d send message\n", SEND_LISTING);
4520         }
4521
4522         msg = CtdlMakeMessage(&CCC->user, recp, cc,
4523                               CCC->room.QRname, anonymous, format_type,
4524                               newusername, newuseremail, subject,
4525                               ((!IsEmptyStr(supplied_euid)) ? supplied_euid : NULL),
4526                               NULL, references);
4527
4528         /* Put together one big recipients struct containing to/cc/bcc all in
4529          * one.  This is for the envelope.
4530          */
4531         char *all_recps = malloc(SIZ * 3);
4532         strcpy(all_recps, recp);
4533         if (!IsEmptyStr(cc)) {
4534                 if (!IsEmptyStr(all_recps)) {
4535                         strcat(all_recps, ",");
4536                 }
4537                 strcat(all_recps, cc);
4538         }
4539         if (!IsEmptyStr(bcc)) {
4540                 if (!IsEmptyStr(all_recps)) {
4541                         strcat(all_recps, ",");
4542                 }
4543                 strcat(all_recps, bcc);
4544         }
4545         if (!IsEmptyStr(all_recps)) {
4546                 valid = validate_recipients(all_recps, NULL, 0);
4547         }
4548         else {
4549                 valid = NULL;
4550         }
4551         free(all_recps);
4552
4553         if (msg != NULL) {
4554                 msgnum = CtdlSubmitMsg(msg, valid, "", QP_EADDR);
4555                 if (verbose_reply)
4556                 {
4557                         if (StrLength(CCC->StatusMessage)>0)
4558                         {
4559                                 StrBufAppendBufPlain(CCC->StatusMessage, HKEY("\n000\n"), 0);
4560                                 cputbuf(CCC->StatusMessage);
4561                         }
4562                         else
4563                                 client_write(HKEY("\n000\n"));
4564                 }
4565
4566                 if (do_confirm) {
4567                         cprintf("%ld\n", msgnum);
4568                         if (msgnum >= 0L) {
4569                                 client_write(HKEY("Message accepted.\n"));
4570                         }
4571                         else {
4572                                 client_write(HKEY("Internal error.\n"));
4573                         }
4574                         if (msg->cm_fields['E'] != NULL) {
4575                                 cprintf("%s\n", msg->cm_fields['E']);
4576                         } else {
4577                                 cprintf("\n");
4578                         }
4579                         cprintf("000\n");
4580                 }
4581
4582                 CtdlFreeMessage(msg);
4583         }
4584         if (valid != NULL) {
4585                 free_recipients(valid);
4586         }
4587         return;
4588 }
4589
4590
4591
4592 /*
4593  * API function to delete messages which match a set of criteria
4594  * (returns the actual number of messages deleted)
4595  */
4596 int CtdlDeleteMessages(char *room_name,         /* which room */
4597                        long *dmsgnums,          /* array of msg numbers to be deleted */
4598                        int num_dmsgnums,        /* number of msgs to be deleted, or 0 for "any" */
4599                        char *content_type       /* or "" for any.  regular expressions expected. */
4600         )
4601 {
4602         struct ctdlroom qrbuf;
4603         struct cdbdata *cdbfr;
4604         long *msglist = NULL;
4605         long *dellist = NULL;
4606         int num_msgs = 0;
4607         int i, j;
4608         int num_deleted = 0;
4609         int delete_this;
4610         struct MetaData smi;
4611         regex_t re;
4612         regmatch_t pm;
4613         int need_to_free_re = 0;
4614
4615         if (content_type) if (!IsEmptyStr(content_type)) {
4616                         regcomp(&re, content_type, 0);
4617                         need_to_free_re = 1;
4618                 }
4619         syslog(LOG_DEBUG, "CtdlDeleteMessages(%s, %d msgs, %s)\n",
4620                room_name, num_dmsgnums, content_type);
4621
4622         /* get room record, obtaining a lock... */
4623         if (CtdlGetRoomLock(&qrbuf, room_name) != 0) {
4624                 syslog(LOG_ERR, "CtdlDeleteMessages(): Room <%s> not found\n",
4625                        room_name);
4626                 if (need_to_free_re) regfree(&re);
4627                 return (0);     /* room not found */
4628         }
4629         cdbfr = cdb_fetch(CDB_MSGLISTS, &qrbuf.QRnumber, sizeof(long));
4630
4631         if (cdbfr != NULL) {
4632                 dellist = malloc(cdbfr->len);
4633                 msglist = (long *) cdbfr->ptr;
4634                 cdbfr->ptr = NULL;      /* CtdlDeleteMessages() now owns this memory */
4635                 num_msgs = cdbfr->len / sizeof(long);
4636                 cdb_free(cdbfr);
4637         }
4638         if (num_msgs > 0) {
4639                 for (i = 0; i < num_msgs; ++i) {
4640                         delete_this = 0x00;
4641
4642                         /* Set/clear a bit for each criterion */
4643
4644                         /* 0 messages in the list or a null list means that we are
4645                          * interested in deleting any messages which meet the other criteria.
4646                          */
4647                         if ((num_dmsgnums == 0) || (dmsgnums == NULL)) {
4648                                 delete_this |= 0x01;
4649                         }
4650                         else {
4651                                 for (j=0; j<num_dmsgnums; ++j) {
4652                                         if (msglist[i] == dmsgnums[j]) {
4653                                                 delete_this |= 0x01;
4654                                         }
4655                                 }
4656                         }
4657
4658                         if (IsEmptyStr(content_type)) {
4659                                 delete_this |= 0x02;
4660                         } else {
4661                                 GetMetaData(&smi, msglist[i]);
4662                                 if (regexec(&re, smi.meta_content_type, 1, &pm, 0) == 0) {
4663                                         delete_this |= 0x02;
4664                                 }
4665                         }
4666
4667                         /* Delete message only if all bits are set */
4668                         if (delete_this == 0x03) {
4669                                 dellist[num_deleted++] = msglist[i];
4670                                 msglist[i] = 0L;
4671                         }
4672                 }
4673
4674                 num_msgs = sort_msglist(msglist, num_msgs);
4675                 cdb_store(CDB_MSGLISTS, &qrbuf.QRnumber, (int)sizeof(long),
4676                           msglist, (int)(num_msgs * sizeof(long)));
4677
4678                 if (num_msgs > 0)
4679                         qrbuf.QRhighest = msglist[num_msgs - 1];
4680                 else
4681                         qrbuf.QRhighest = 0;
4682         }
4683         CtdlPutRoomLock(&qrbuf);
4684
4685         /* Go through the messages we pulled out of the index, and decrement
4686          * their reference counts by 1.  If this is the only room the message
4687          * was in, the reference count will reach zero and the message will
4688          * automatically be deleted from the database.  We do this in a
4689          * separate pass because there might be plug-in hooks getting called,
4690          * and we don't want that happening during an S_ROOMS critical
4691          * section.
4692          */
4693         if (num_deleted) for (i=0; i<num_deleted; ++i) {
4694                         PerformDeleteHooks(qrbuf.QRname, dellist[i]);
4695                         AdjRefCount(dellist[i], -1);
4696                 }
4697
4698         /* Now free the memory we used, and go away. */
4699         if (msglist != NULL) free(msglist);
4700         if (dellist != NULL) free(dellist);
4701         syslog(LOG_DEBUG, "%d message(s) deleted.\n", num_deleted);
4702         if (need_to_free_re) regfree(&re);
4703         return (num_deleted);
4704 }
4705
4706
4707
4708 /*
4709  * Check whether the current user has permission to delete messages from
4710  * the current room (returns 1 for yes, 0 for no)
4711  */
4712 int CtdlDoIHavePermissionToDeleteMessagesFromThisRoom(void) {
4713         int ra;
4714         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
4715         if (ra & UA_DELETEALLOWED) return(1);
4716         return(0);
4717 }
4718
4719
4720
4721
4722 /*
4723  * Delete message from current room
4724  */
4725 void cmd_dele(char *args)
4726 {
4727         int num_deleted;
4728         int i;
4729         char msgset[SIZ];
4730         char msgtok[32];
4731         long *msgs;
4732         int num_msgs = 0;
4733
4734         extract_token(msgset, args, 0, '|', sizeof msgset);
4735         num_msgs = num_tokens(msgset, ',');
4736         if (num_msgs < 1) {
4737                 cprintf("%d Nothing to do.\n", CIT_OK);
4738                 return;
4739         }
4740
4741         if (CtdlDoIHavePermissionToDeleteMessagesFromThisRoom() == 0) {
4742                 cprintf("%d Higher access required.\n",
4743                         ERROR + HIGHER_ACCESS_REQUIRED);
4744                 return;
4745         }
4746
4747         /*
4748          * Build our message set to be moved/copied
4749          */
4750         msgs = malloc(num_msgs * sizeof(long));
4751         for (i=0; i<num_msgs; ++i) {
4752                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4753                 msgs[i] = atol(msgtok);
4754         }
4755
4756         num_deleted = CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4757         free(msgs);
4758
4759         if (num_deleted) {
4760                 cprintf("%d %d message%s deleted.\n", CIT_OK,
4761                         num_deleted, ((num_deleted != 1) ? "s" : ""));
4762         } else {
4763                 cprintf("%d Message not found.\n", ERROR + MESSAGE_NOT_FOUND);
4764         }
4765 }
4766
4767
4768
4769
4770 /*
4771  * move or copy a message to another room
4772  */
4773 void cmd_move(char *args)
4774 {
4775         char msgset[SIZ];
4776         char msgtok[32];
4777         long *msgs;
4778         int num_msgs = 0;
4779
4780         char targ[ROOMNAMELEN];
4781         struct ctdlroom qtemp;
4782         int err;
4783         int is_copy = 0;
4784         int ra;
4785         int permit = 0;
4786         int i;
4787
4788         extract_token(msgset, args, 0, '|', sizeof msgset);
4789         num_msgs = num_tokens(msgset, ',');
4790         if (num_msgs < 1) {
4791                 cprintf("%d Nothing to do.\n", CIT_OK);
4792                 return;
4793         }
4794
4795         extract_token(targ, args, 1, '|', sizeof targ);
4796         convert_room_name_macros(targ, sizeof targ);
4797         targ[ROOMNAMELEN - 1] = 0;
4798         is_copy = extract_int(args, 2);
4799
4800         if (CtdlGetRoom(&qtemp, targ) != 0) {
4801                 cprintf("%d '%s' does not exist.\n", ERROR + ROOM_NOT_FOUND, targ);
4802                 return;
4803         }
4804
4805         if (!strcasecmp(qtemp.QRname, CC->room.QRname)) {
4806                 cprintf("%d Source and target rooms are the same.\n", ERROR + ALREADY_EXISTS);
4807                 return;
4808         }
4809
4810         CtdlGetUser(&CC->user, CC->curr_user);
4811         CtdlRoomAccess(&qtemp, &CC->user, &ra, NULL);
4812
4813         /* Check for permission to perform this operation.
4814          * Remember: "CC->room" is source, "qtemp" is target.
4815          */
4816         permit = 0;
4817
4818         /* Aides can move/copy */
4819         if (CC->user.axlevel >= AxAideU) permit = 1;
4820
4821         /* Room aides can move/copy */
4822         if (CC->user.usernum == CC->room.QRroomaide) permit = 1;
4823
4824         /* Permit move/copy from personal rooms */
4825         if ((CC->room.QRflags & QR_MAILBOX)
4826             && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
4827
4828         /* Permit only copy from public to personal room */
4829         if ( (is_copy)
4830              && (!(CC->room.QRflags & QR_MAILBOX))
4831              && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
4832
4833         /* Permit message removal from collaborative delete rooms */
4834         if (CC->room.QRflags2 & QR2_COLLABDEL) permit = 1;
4835
4836         /* Users allowed to post into the target room may move into it too. */
4837         if ((CC->room.QRflags & QR_MAILBOX) &&
4838             (qtemp.QRflags & UA_POSTALLOWED))  permit = 1;
4839
4840         /* User must have access to target room */
4841         if (!(ra & UA_KNOWN))  permit = 0;
4842
4843         if (!permit) {
4844                 cprintf("%d Higher access required.\n",
4845                         ERROR + HIGHER_ACCESS_REQUIRED);
4846                 return;
4847         }
4848
4849         /*
4850          * Build our message set to be moved/copied
4851          */
4852         msgs = malloc(num_msgs * sizeof(long));
4853         for (i=0; i<num_msgs; ++i) {
4854                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4855                 msgs[i] = atol(msgtok);
4856         }
4857
4858         /*
4859          * Do the copy
4860          */
4861         err = CtdlSaveMsgPointersInRoom(targ, msgs, num_msgs, 1, NULL, 0);
4862         if (err != 0) {
4863                 cprintf("%d Cannot store message(s) in %s: error %d\n",
4864                         err, targ, err);
4865                 free(msgs);
4866                 return;
4867         }
4868
4869         /* Now delete the message from the source room,
4870          * if this is a 'move' rather than a 'copy' operation.
4871          */
4872         if (is_copy == 0) {
4873                 CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4874         }
4875         free(msgs);
4876
4877         cprintf("%d Message(s) %s.\n", CIT_OK, (is_copy ? "copied" : "moved") );
4878 }
4879
4880
4881
4882 /*
4883  * GetMetaData()  -  Get the supplementary record for a message
4884  */
4885 void GetMetaData(struct MetaData *smibuf, long msgnum)
4886 {
4887
4888         struct cdbdata *cdbsmi;
4889         long TheIndex;
4890
4891         memset(smibuf, 0, sizeof(struct MetaData));
4892         smibuf->meta_msgnum = msgnum;
4893         smibuf->meta_refcount = 1;      /* Default reference count is 1 */
4894
4895         /* Use the negative of the message number for its supp record index */
4896         TheIndex = (0L - msgnum);
4897
4898         cdbsmi = cdb_fetch(CDB_MSGMAIN, &TheIndex, sizeof(long));
4899         if (cdbsmi == NULL) {
4900                 return;         /* record not found; go with defaults */
4901         }
4902         memcpy(smibuf, cdbsmi->ptr,
4903                ((cdbsmi->len > sizeof(struct MetaData)) ?
4904                 sizeof(struct MetaData) : cdbsmi->len));
4905         cdb_free(cdbsmi);
4906         return;
4907 }
4908
4909
4910 /*
4911  * PutMetaData()  -  (re)write supplementary record for a message
4912  */
4913 void PutMetaData(struct MetaData *smibuf)
4914 {
4915         long TheIndex;
4916
4917         /* Use the negative of the message number for the metadata db index */
4918         TheIndex = (0L - smibuf->meta_msgnum);
4919
4920         cdb_store(CDB_MSGMAIN,
4921                   &TheIndex, (int)sizeof(long),
4922                   smibuf, (int)sizeof(struct MetaData));
4923
4924 }
4925
4926 /*
4927  * AdjRefCount  -  submit an adjustment to the reference count for a message.
4928  *                 (These are just queued -- we actually process them later.)
4929  */
4930 void AdjRefCount(long msgnum, int incr)
4931 {
4932         struct arcq new_arcq;
4933         int rv = 0;
4934
4935         syslog(LOG_DEBUG, "AdjRefCount() msg %ld ref count delta %+d\n", msgnum, incr);
4936
4937         begin_critical_section(S_SUPPMSGMAIN);
4938         if (arcfp == NULL) {
4939                 arcfp = fopen(file_arcq, "ab+");
4940                 chown(file_arcq, CTDLUID, (-1));
4941                 chmod(file_arcq, 0600);
4942         }
4943         end_critical_section(S_SUPPMSGMAIN);
4944
4945         /* msgnum < 0 means that we're trying to close the file */
4946         if (msgnum < 0) {
4947                 syslog(LOG_DEBUG, "Closing the AdjRefCount queue file\n");
4948                 begin_critical_section(S_SUPPMSGMAIN);
4949                 if (arcfp != NULL) {
4950                         fclose(arcfp);
4951                         arcfp = NULL;
4952                 }
4953                 end_critical_section(S_SUPPMSGMAIN);
4954                 return;
4955         }
4956
4957         /*
4958          * If we can't open the queue, perform the operation synchronously.
4959          */
4960         if (arcfp == NULL) {
4961                 TDAP_AdjRefCount(msgnum, incr);
4962                 return;
4963         }
4964
4965         new_arcq.arcq_msgnum = msgnum;
4966         new_arcq.arcq_delta = incr;
4967         rv = fwrite(&new_arcq, sizeof(struct arcq), 1, arcfp);
4968         if (rv == -1) {
4969                 syslog(LOG_EMERG, "Couldn't write Refcount Queue File %s: %s\n",
4970                        file_arcq,
4971                        strerror(errno));
4972         }
4973         fflush(arcfp);
4974
4975         return;
4976 }
4977
4978
4979 /*
4980  * TDAP_ProcessAdjRefCountQueue()
4981  *
4982  * Process the queue of message count adjustments that was created by calls
4983  * to AdjRefCount() ... by reading the queue and calling TDAP_AdjRefCount()
4984  * for each one.  This should be an "off hours" operation.
4985  */
4986 int TDAP_ProcessAdjRefCountQueue(void)
4987 {
4988         char file_arcq_temp[PATH_MAX];
4989         int r;
4990         FILE *fp;
4991         struct arcq arcq_rec;
4992         int num_records_processed = 0;
4993
4994         snprintf(file_arcq_temp, sizeof file_arcq_temp, "%s.%04x", file_arcq, rand());
4995
4996         begin_critical_section(S_SUPPMSGMAIN);
4997         if (arcfp != NULL) {
4998                 fclose(arcfp);
4999                 arcfp = NULL;
5000         }
5001
5002         r = link(file_arcq, file_arcq_temp);
5003         if (r != 0) {
5004                 syslog(LOG_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
5005                 end_critical_section(S_SUPPMSGMAIN);
5006                 return(num_records_processed);
5007         }
5008
5009         unlink(file_arcq);
5010         end_critical_section(S_SUPPMSGMAIN);
5011
5012         fp = fopen(file_arcq_temp, "rb");
5013         if (fp == NULL) {
5014                 syslog(LOG_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
5015                 return(num_records_processed);
5016         }
5017
5018         while (fread(&arcq_rec, sizeof(struct arcq), 1, fp) == 1) {
5019                 TDAP_AdjRefCount(arcq_rec.arcq_msgnum, arcq_rec.arcq_delta);
5020                 ++num_records_processed;
5021         }
5022
5023         fclose(fp);
5024         r = unlink(file_arcq_temp);
5025         if (r != 0) {
5026                 syslog(LOG_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
5027         }
5028
5029         return(num_records_processed);
5030 }
5031
5032
5033
5034 /*
5035  * TDAP_AdjRefCount  -  adjust the reference count for a message.
5036  *                      This one does it "for real" because it's called by
5037  *                      the autopurger function that processes the queue
5038  *                      created by AdjRefCount().   If a message's reference
5039  *                      count becomes zero, we also delete the message from
5040  *                      disk and de-index it.
5041  */
5042 void TDAP_AdjRefCount(long msgnum, int incr)
5043 {
5044
5045         struct MetaData smi;
5046         long delnum;
5047
5048         /* This is a *tight* critical section; please keep it that way, as
5049          * it may get called while nested in other critical sections.
5050          * Complicating this any further will surely cause deadlock!
5051          */
5052         begin_critical_section(S_SUPPMSGMAIN);
5053         GetMetaData(&smi, msgnum);
5054         smi.meta_refcount += incr;
5055         PutMetaData(&smi);
5056         end_critical_section(S_SUPPMSGMAIN);
5057         syslog(LOG_DEBUG, "TDAP_AdjRefCount() msg %ld ref count delta %+d, is now %d\n",
5058                msgnum, incr, smi.meta_refcount
5059                 );
5060
5061         /* If the reference count is now zero, delete the message
5062          * (and its supplementary record as well).
5063          */
5064         if (smi.meta_refcount == 0) {
5065                 syslog(LOG_DEBUG, "Deleting message <%ld>\n", msgnum);
5066
5067                 /* Call delete hooks with NULL room to show it has gone altogether */
5068                 PerformDeleteHooks(NULL, msgnum);
5069
5070                 /* Remove from message base */
5071                 delnum = msgnum;
5072                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
5073                 cdb_delete(CDB_BIGMSGS, &delnum, (int)sizeof(long));
5074
5075                 /* Remove metadata record */
5076                 delnum = (0L - msgnum);
5077                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
5078         }
5079
5080 }
5081
5082 /*
5083  * Write a generic object to this room
5084  *
5085  * Note: this could be much more efficient.  Right now we use two temporary
5086  * files, and still pull the message into memory as with all others.
5087  */
5088 void CtdlWriteObject(char *req_room,                    /* Room to stuff it in */
5089                      char *content_type,                /* MIME type of this object */
5090                      char *raw_message,         /* Data to be written */
5091                      off_t raw_length,          /* Size of raw_message */
5092                      struct ctdluser *is_mailbox,       /* Mailbox room? */
5093                      int is_binary,                     /* Is encoding necessary? */
5094                      int is_unique,                     /* Del others of this type? */
5095                      unsigned int flags         /* Internal save flags */
5096         )
5097 {
5098
5099         struct ctdlroom qrbuf;
5100         char roomname[ROOMNAMELEN];
5101         struct CtdlMessage *msg;
5102         char *encoded_message = NULL;
5103
5104         if (is_mailbox != NULL) {
5105                 CtdlMailboxName(roomname, sizeof roomname, is_mailbox, req_room);
5106         }
5107         else {
5108                 safestrncpy(roomname, req_room, sizeof(roomname));
5109         }
5110
5111         syslog(LOG_DEBUG, "Raw length is %ld\n", (long)raw_length);
5112
5113         if (is_binary) {
5114                 encoded_message = malloc((size_t) (((raw_length * 134) / 100) + 4096 ) );
5115         }
5116         else {
5117                 encoded_message = malloc((size_t)(raw_length + 4096));
5118         }
5119
5120         sprintf(encoded_message, "Content-type: %s\n", content_type);
5121
5122         if (is_binary) {
5123                 sprintf(&encoded_message[strlen(encoded_message)],
5124                         "Content-transfer-encoding: base64\n\n"
5125                         );
5126         }
5127         else {
5128                 sprintf(&encoded_message[strlen(encoded_message)],
5129                         "Content-transfer-encoding: 7bit\n\n"
5130                         );
5131         }
5132
5133         if (is_binary) {
5134                 CtdlEncodeBase64(
5135                         &encoded_message[strlen(encoded_message)],
5136                         raw_message,
5137                         (int)raw_length,
5138                         0
5139                         );
5140         }
5141         else {
5142                 memcpy(
5143                         &encoded_message[strlen(encoded_message)],
5144                         raw_message,
5145                         (int)(raw_length+1)
5146                         );
5147         }
5148
5149         syslog(LOG_DEBUG, "Allocating\n");
5150         msg = malloc(sizeof(struct CtdlMessage));
5151         memset(msg, 0, sizeof(struct CtdlMessage));
5152         msg->cm_magic = CTDLMESSAGE_MAGIC;
5153         msg->cm_anon_type = MES_NORMAL;
5154         msg->cm_format_type = 4;
5155         msg->cm_fields['A'] = strdup(CC->user.fullname);
5156         msg->cm_fields['O'] = strdup(req_room);
5157         msg->cm_fields['N'] = strdup(config.c_nodename);
5158         msg->cm_fields['H'] = strdup(config.c_humannode);
5159         msg->cm_flags = flags;
5160
5161         msg->cm_fields['M'] = encoded_message;
5162
5163         /* Create the requested room if we have to. */
5164         if (CtdlGetRoom(&qrbuf, roomname) != 0) {
5165                 CtdlCreateRoom(roomname,
5166                                ( (is_mailbox != NULL) ? 5 : 3 ),
5167                                "", 0, 1, 0, VIEW_BBS);
5168         }
5169         /* If the caller specified this object as unique, delete all
5170          * other objects of this type that are currently in the room.
5171          */
5172         if (is_unique) {
5173                 syslog(LOG_DEBUG, "Deleted %d other msgs of this type\n",
5174                        CtdlDeleteMessages(roomname, NULL, 0, content_type)
5175                         );
5176         }
5177         /* Now write the data */
5178         CtdlSubmitMsg(msg, NULL, roomname, 0);
5179         CtdlFreeMessage(msg);
5180 }
5181
5182
5183
5184
5185
5186
5187 void CtdlGetSysConfigBackend(long msgnum, void *userdata) {
5188         config_msgnum = msgnum;
5189 }
5190
5191
5192 char *CtdlGetSysConfig(char *sysconfname) {
5193         char hold_rm[ROOMNAMELEN];
5194         long msgnum;
5195         char *conf;
5196         struct CtdlMessage *msg;
5197         char buf[SIZ];
5198
5199         strcpy(hold_rm, CC->room.QRname);
5200         if (CtdlGetRoom(&CC->room, SYSCONFIGROOM) != 0) {
5201                 CtdlGetRoom(&CC->room, hold_rm);
5202                 return NULL;
5203         }
5204
5205
5206         /* We want the last (and probably only) config in this room */
5207         begin_critical_section(S_CONFIG);
5208         config_msgnum = (-1L);
5209         CtdlForEachMessage(MSGS_LAST, 1, NULL, sysconfname, NULL,
5210                            CtdlGetSysConfigBackend, NULL);
5211         msgnum = config_msgnum;
5212         end_critical_section(S_CONFIG);
5213
5214         if (msgnum < 0L) {
5215                 conf = NULL;
5216         }
5217         else {
5218                 msg = CtdlFetchMessage(msgnum, 1);
5219                 if (msg != NULL) {
5220                         conf = strdup(msg->cm_fields['M']);
5221                         CtdlFreeMessage(msg);
5222                 }
5223                 else {
5224                         conf = NULL;
5225                 }
5226         }
5227
5228         CtdlGetRoom(&CC->room, hold_rm);
5229
5230         if (conf != NULL) do {
5231                         extract_token(buf, conf, 0, '\n', sizeof buf);
5232                         strcpy(conf, &conf[strlen(buf)+1]);
5233                 } while ( (!IsEmptyStr(conf)) && (!IsEmptyStr(buf)) );
5234
5235         return(conf);
5236 }
5237
5238
5239 void CtdlPutSysConfig(char *sysconfname, char *sysconfdata) {
5240         CtdlWriteObject(SYSCONFIGROOM, sysconfname, sysconfdata, (strlen(sysconfdata)+1), NULL, 0, 1, 0);
5241 }
5242
5243
5244 /*
5245  * Determine whether a given Internet address belongs to the current user
5246  */
5247 int CtdlIsMe(char *addr, int addr_buf_len)
5248 {
5249         struct recptypes *recp;
5250         int i;
5251
5252         recp = validate_recipients(addr, NULL, 0);
5253         if (recp == NULL) return(0);
5254
5255         if (recp->num_local == 0) {
5256                 free_recipients(recp);
5257                 return(0);
5258         }
5259
5260         for (i=0; i<recp->num_local; ++i) {
5261                 extract_token(addr, recp->recp_local, i, '|', addr_buf_len);
5262                 if (!strcasecmp(addr, CC->user.fullname)) {
5263                         free_recipients(recp);
5264                         return(1);
5265                 }
5266         }
5267
5268         free_recipients(recp);
5269         return(0);
5270 }
5271
5272
5273 /*
5274  * Citadel protocol command to do the same
5275  */
5276 void cmd_isme(char *argbuf) {
5277         char addr[256];
5278
5279         if (CtdlAccessCheck(ac_logged_in)) return;
5280         extract_token(addr, argbuf, 0, '|', sizeof addr);
5281
5282         if (CtdlIsMe(addr, sizeof addr)) {
5283                 cprintf("%d %s\n", CIT_OK, addr);
5284         }
5285         else {
5286                 cprintf("%d Not you.\n", ERROR + ILLEGAL_VALUE);
5287         }
5288
5289 }
5290
5291
5292 /*****************************************************************************/
5293 /*                      MODULE INITIALIZATION STUFF                          */
5294 /*****************************************************************************/
5295
5296 CTDL_MODULE_INIT(msgbase)
5297 {
5298         if (!threading) {
5299                 CtdlRegisterProtoHook(cmd_msgs, "MSGS", "Output a list of messages in the current room");
5300                 CtdlRegisterProtoHook(cmd_msg0, "MSG0", "Output a message in plain text format");
5301                 CtdlRegisterProtoHook(cmd_msg2, "MSG2", "Output a message in RFC822 format");
5302                 CtdlRegisterProtoHook(cmd_msg3, "MSG3", "Output a message in raw format (deprecated)");
5303                 CtdlRegisterProtoHook(cmd_msg4, "MSG4", "Output a message in the client's preferred format");
5304                 CtdlRegisterProtoHook(cmd_msgp, "MSGP", "Select preferred format for MSG4 output");
5305                 CtdlRegisterProtoHook(cmd_opna, "OPNA", "Open an attachment for download");
5306                 CtdlRegisterProtoHook(cmd_dlat, "DLAT", "Download an attachment");
5307                 CtdlRegisterProtoHook(cmd_ent0, "ENT0", "Enter a message");
5308                 CtdlRegisterProtoHook(cmd_dele, "DELE", "Delete a message");
5309                 CtdlRegisterProtoHook(cmd_move, "MOVE", "Move or copy a message to another room");
5310                 CtdlRegisterProtoHook(cmd_isme, "ISME", "Determine whether an email address belongs to a user");
5311         }
5312
5313         /* return our Subversion id for the Log */
5314         return "msgbase";
5315 }