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 void AdjRefCountList(long *msgnum, long nmsg, int incr);
  71
  72 int MessageDebugEnabled = 0;
  73
  74 /*
  75  * These are the four-character field headers we use when outputting
  76  * messages in Citadel format (as opposed to RFC822 format).
  77  */
  78 char *msgkeys[] = {
  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, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  85         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  86         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  87         NULL,
  88         "from",
  89         NULL, NULL, NULL,
  90         "exti",
  91         "rfca",
  92         NULL,
  93         "hnod",
  94         "msgn",
  95         "jrnl",
  96         NULL,
  97         "list",
  98         "text",
  99         "node",
 100         "room",
 101         "path",
 102         NULL,
 103         "rcpt",
 104         "spec",
 105         "time",
 106         "subj",
 107         NULL,
 108         "wefw",
 109         NULL,
 110         "cccc",
 111         NULL
 112 };
 113
 114 /*
 115  * This function is self explanatory.
 116  * (What can I say, I'm in a weird mood today...)
 117  */
 118 void remove_any_whitespace_to_the_left_or_right_of_at_symbol(char *name)
 119 {
 120         int i;
 121
 122         for (i = 0; i < strlen(name); ++i) {
 123                 if (name[i] == '@') {
 124                         while (isspace(name[i - 1]) && i > 0) {
 125                                 strcpy(&name[i - 1], &name[i]);
 126                                 --i;
 127                         }
 128                         while (isspace(name[i + 1])) {
 129                                 strcpy(&name[i + 1], &name[i + 2]);
 130                         }
 131                 }
 132         }
 133 }
 134
 135
 136 /*
 137  * Aliasing for network mail.
 138  * (Error messages have been commented out, because this is a server.)
 139  */
 140 int alias(char *name)
 141 {                               /* process alias and routing info for mail */
 142         struct CitContext *CCC = CC;
 143         FILE *fp;
 144         int a, i;
 145         char aaa[SIZ], bbb[SIZ];
 146         char *ignetcfg = NULL;
 147         char *ignetmap = NULL;
 148         int at = 0;
 149         char node[64];
 150         char testnode[64];
 151         char buf[SIZ];
 152
 153         char original_name[256];
 154         safestrncpy(original_name, name, sizeof original_name);
 155
 156         striplt(name);
 157         remove_any_whitespace_to_the_left_or_right_of_at_symbol(name);
 158         stripallbut(name, '<', '>');
 159
 160         fp = fopen(file_mail_aliases, "r");
 161         if (fp == NULL) {
 162                 fp = fopen("/dev/null", "r");
 163         }
 164         if (fp == NULL) {
 165                 return (MES_ERROR);
 166         }
 167         strcpy(aaa, "");
 168         strcpy(bbb, "");
 169         while (fgets(aaa, sizeof aaa, fp) != NULL) {
 170                 while (isspace(name[0]))
 171                         strcpy(name, &name[1]);
 172                 aaa[strlen(aaa) - 1] = 0;
 173                 strcpy(bbb, "");
 174                 for (a = 0; a < strlen(aaa); ++a) {
 175                         if (aaa[a] == ',') {
 176                                 strcpy(bbb, &aaa[a + 1]);
 177                                 aaa[a] = 0;
 178                         }
 179                 }
 180                 if (!strcasecmp(name, aaa))
 181                         strcpy(name, bbb);
 182         }
 183         fclose(fp);
 184
 185         /* Hit the Global Address Book */
 186         if (CtdlDirectoryLookup(aaa, name, sizeof aaa) == 0) {
 187                 strcpy(name, aaa);
 188         }
 189
 190         if (strcasecmp(original_name, name)) {
 191                 MSG_syslog(LOG_INFO, "%s is being forwarded to %s\n", original_name, name);
 192         }
 193
 194         /* Change "user @ xxx" to "user" if xxx is an alias for this host */
 195         for (a=0; a<strlen(name); ++a) {
 196                 if (name[a] == '@') {
 197                         if (CtdlHostAlias(&name[a+1]) == hostalias_localhost) {
 198                                 name[a] = 0;
 199                                 MSG_syslog(LOG_INFO, "Changed to <%s>\n", name);
 200                         }
 201                 }
 202         }
 203
 204         /* determine local or remote type, see citadel.h */
 205         at = haschar(name, '@');
 206         if (at == 0) return(MES_LOCAL);         /* no @'s - local address */
 207         if (at > 1) return(MES_ERROR);          /* >1 @'s - invalid address */
 208         remove_any_whitespace_to_the_left_or_right_of_at_symbol(name);
 209
 210         /* figure out the delivery mode */
 211         extract_token(node, name, 1, '@', sizeof node);
 212
 213         /* If there are one or more dots in the nodename, we assume that it
 214          * is an FQDN and will attempt SMTP delivery to the Internet.
 215          */
 216         if (haschar(node, '.') > 0) {
 217                 return(MES_INTERNET);
 218         }
 219
 220         /* Otherwise we look in the IGnet maps for a valid Citadel node.
 221          * Try directly-connected nodes first...
 222          */
 223         ignetcfg = CtdlGetSysConfig(IGNETCFG);
 224         for (i=0; i<num_tokens(ignetcfg, '\n'); ++i) {
 225                 extract_token(buf, ignetcfg, i, '\n', sizeof buf);
 226                 extract_token(testnode, buf, 0, '|', sizeof testnode);
 227                 if (!strcasecmp(node, testnode)) {
 228                         free(ignetcfg);
 229                         return(MES_IGNET);
 230                 }
 231         }
 232         free(ignetcfg);
 233
 234         /*
 235          * Then try nodes that are two or more hops away.
 236          */
 237         ignetmap = CtdlGetSysConfig(IGNETMAP);
 238         for (i=0; i<num_tokens(ignetmap, '\n'); ++i) {
 239                 extract_token(buf, ignetmap, i, '\n', sizeof buf);
 240                 extract_token(testnode, buf, 0, '|', sizeof testnode);
 241                 if (!strcasecmp(node, testnode)) {
 242                         free(ignetmap);
 243                         return(MES_IGNET);
 244                 }
 245         }
 246         free(ignetmap);
 247
 248         /* If we get to this point it's an invalid node name */
 249         return (MES_ERROR);
 250 }
 251
 252
 253 /*
 254  * Back end for the MSGS command: output message number only.
 255  */
 256 void simple_listing(long msgnum, void *userdata)
 257 {
 258         cprintf("%ld\n", msgnum);
 259 }
 260
 261
 262
 263 /*
 264  * Back end for the MSGS command: output header summary.
 265  */
 266 void headers_listing(long msgnum, void *userdata)
 267 {
 268         struct CtdlMessage *msg;
 269
 270         msg = CtdlFetchMessage(msgnum, 0);
 271         if (msg == NULL) {
 272                 cprintf("%ld|0|||||\n", msgnum);
 273                 return;
 274         }
 275
 276         cprintf("%ld|%s|%s|%s|%s|%s|\n",
 277                 msgnum,
 278                 (msg->cm_fields['T'] ? msg->cm_fields['T'] : "0"),
 279                 (msg->cm_fields['A'] ? msg->cm_fields['A'] : ""),
 280                 (msg->cm_fields['N'] ? msg->cm_fields['N'] : ""),
 281                 (msg->cm_fields['F'] ? msg->cm_fields['F'] : ""),
 282                 (msg->cm_fields['U'] ? msg->cm_fields['U'] : "")
 283         );
 284         CtdlFreeMessage(msg);
 285 }
 286
 287 /*
 288  * Back end for the MSGS command: output EUID header.
 289  */
 290 void headers_euid(long msgnum, void *userdata)
 291 {
 292         struct CtdlMessage *msg;
 293
 294         msg = CtdlFetchMessage(msgnum, 0);
 295         if (msg == NULL) {
 296                 cprintf("%ld||\n", msgnum);
 297                 return;
 298         }
 299
 300         cprintf("%ld|%s|%s\n",
 301                 msgnum,
 302                 (msg->cm_fields['E'] ? msg->cm_fields['E'] : ""),
 303                 (msg->cm_fields['T'] ? msg->cm_fields['T'] : "0"));
 304         CtdlFreeMessage(msg);
 305 }
 306
 307
 308
 309
 310
 311 /* Determine if a given message matches the fields in a message template.
 312  * Return 0 for a successful match.
 313  */
 314 int CtdlMsgCmp(struct CtdlMessage *msg, struct CtdlMessage *template) {
 315         int i;
 316
 317         /* If there aren't any fields in the template, all messages will
 318          * match.
 319          */
 320         if (template == NULL) return(0);
 321
 322         /* Null messages are bogus. */
 323         if (msg == NULL) return(1);
 324
 325         for (i='A'; i<='Z'; ++i) {
 326                 if (template->cm_fields[i] != NULL) {
 327                         if (msg->cm_fields[i] == NULL) {
 328                                 /* Considered equal if temmplate is empty string */
 329                                 if (IsEmptyStr(template->cm_fields[i])) continue;
 330                                 return 1;
 331                         }
 332                         if (strcasecmp(msg->cm_fields[i],
 333                                 template->cm_fields[i])) return 1;
 334                 }
 335         }
 336
 337         /* All compares succeeded: we have a match! */
 338         return 0;
 339 }
 340
 341
 342
 343 /*
 344  * Retrieve the "seen" message list for the current room.
 345  */
 346 void CtdlGetSeen(char *buf, int which_set) {
 347         struct CitContext *CCC = CC;
 348         visit vbuf;
 349
 350         /* Learn about the user and room in question */
 351         CtdlGetRelationship(&vbuf, &CCC->user, &CCC->room);
 352
 353         if (which_set == ctdlsetseen_seen)
 354                 safestrncpy(buf, vbuf.v_seen, SIZ);
 355         if (which_set == ctdlsetseen_answered)
 356                 safestrncpy(buf, vbuf.v_answered, SIZ);
 357 }
 358
 359
 360
 361 /*
 362  * Manipulate the "seen msgs" string (or other message set strings)
 363  */
 364 void CtdlSetSeen(long *target_msgnums, int num_target_msgnums,
 365                 int target_setting, int which_set,
 366                 struct ctdluser *which_user, struct ctdlroom *which_room) {
 367         struct CitContext *CCC = CC;
 368         struct cdbdata *cdbfr;
 369         int i, k;
 370         int is_seen = 0;
 371         int was_seen = 0;
 372         long lo = (-1L);
 373         long hi = (-1L);
 374         visit vbuf;
 375         long *msglist;
 376         int num_msgs = 0;
 377         StrBuf *vset;
 378         StrBuf *setstr;
 379         StrBuf *lostr;
 380         StrBuf *histr;
 381         const char *pvset;
 382         char *is_set;   /* actually an array of booleans */
 383
 384         /* Don't bother doing *anything* if we were passed a list of zero messages */
 385         if (num_target_msgnums < 1) {
 386                 return;
 387         }
 388
 389         /* If no room was specified, we go with the current room. */
 390         if (!which_room) {
 391                 which_room = &CCC->room;
 392         }
 393
 394         /* If no user was specified, we go with the current user. */
 395         if (!which_user) {
 396                 which_user = &CCC->user;
 397         }
 398
 399         MSG_syslog(LOG_DEBUG, "CtdlSetSeen(%d msgs starting with %ld, %s, %d) in <%s>\n",
 400                    num_target_msgnums, target_msgnums[0],
 401                    (target_setting ? "SET" : "CLEAR"),
 402                    which_set,
 403                    which_room->QRname);
 404
 405         /* Learn about the user and room in question */
 406         CtdlGetRelationship(&vbuf, which_user, which_room);
 407
 408         /* Load the message list */
 409         cdbfr = cdb_fetch(CDB_MSGLISTS, &which_room->QRnumber, sizeof(long));
 410         if (cdbfr != NULL) {
 411                 msglist = (long *) cdbfr->ptr;
 412                 cdbfr->ptr = NULL;      /* CtdlSetSeen() now owns this memory */
 413                 num_msgs = cdbfr->len / sizeof(long);
 414                 cdb_free(cdbfr);
 415         } else {
 416                 return; /* No messages at all?  No further action. */
 417         }
 418
 419         is_set = malloc(num_msgs * sizeof(char));
 420         memset(is_set, 0, (num_msgs * sizeof(char)) );
 421
 422         /* Decide which message set we're manipulating */
 423         switch(which_set) {
 424         case ctdlsetseen_seen:
 425                 vset = NewStrBufPlain(vbuf.v_seen, -1);
 426                 break;
 427         case ctdlsetseen_answered:
 428                 vset = NewStrBufPlain(vbuf.v_answered, -1);
 429                 break;
 430         default:
 431                 vset = NewStrBuf();
 432         }
 433
 434
 435 #if 0   /* This is a special diagnostic section.  Do not allow it to run during normal operation. */
 436         MSG_syslog(LOG_DEBUG, "There are %d messages in the room.\n", num_msgs);
 437         for (i=0; i<num_msgs; ++i) {
 438                 if ((i > 0) && (msglist[i] <= msglist[i-1])) abort();
 439         }
 440         MSG_syslog(LOG_DEBUG, "We are twiddling %d of them.\n", num_target_msgnums);
 441         for (k=0; k<num_target_msgnums; ++k) {
 442                 if ((k > 0) && (target_msgnums[k] <= target_msgnums[k-1])) abort();
 443         }
 444 #endif
 445
 446         MSG_syslog(LOG_DEBUG, "before update: %s\n", ChrPtr(vset));
 447
 448         /* Translate the existing sequence set into an array of booleans */
 449         setstr = NewStrBuf();
 450         lostr = NewStrBuf();
 451         histr = NewStrBuf();
 452         pvset = NULL;
 453         while (StrBufExtract_NextToken(setstr, vset, &pvset, ',') >= 0) {
 454
 455                 StrBufExtract_token(lostr, setstr, 0, ':');
 456                 if (StrBufNum_tokens(setstr, ':') >= 2) {
 457                         StrBufExtract_token(histr, setstr, 1, ':');
 458                 }
 459                 else {
 460                         FlushStrBuf(histr);
 461                         StrBufAppendBuf(histr, lostr, 0);
 462                 }
 463                 lo = StrTol(lostr);
 464                 if (!strcmp(ChrPtr(histr), "*")) {
 465                         hi = LONG_MAX;
 466                 }
 467                 else {
 468                         hi = StrTol(histr);
 469                 }
 470
 471                 for (i = 0; i < num_msgs; ++i) {
 472                         if ((msglist[i] >= lo) && (msglist[i] <= hi)) {
 473                                 is_set[i] = 1;
 474                         }
 475                 }
 476         }
 477         FreeStrBuf(&setstr);
 478         FreeStrBuf(&lostr);
 479         FreeStrBuf(&histr);
 480
 481
 482         /* Now translate the array of booleans back into a sequence set */
 483         FlushStrBuf(vset);
 484         was_seen = 0;
 485         lo = (-1);
 486         hi = (-1);
 487
 488         for (i=0; i<num_msgs; ++i) {
 489                 is_seen = is_set[i];
 490
 491                 /* Apply changes */
 492                 for (k=0; k<num_target_msgnums; ++k) {
 493                         if (msglist[i] == target_msgnums[k]) {
 494                                 is_seen = target_setting;
 495                         }
 496                 }
 497
 498                 if ((was_seen == 0) && (is_seen == 1)) {
 499                         lo = msglist[i];
 500                 }
 501                 else if ((was_seen == 1) && (is_seen == 0)) {
 502                         hi = msglist[i-1];
 503
 504                         if (StrLength(vset) > 0) {
 505                                 StrBufAppendBufPlain(vset, HKEY(","), 0);
 506                         }
 507                         if (lo == hi) {
 508                                 StrBufAppendPrintf(vset, "%ld", hi);
 509                         }
 510                         else {
 511                                 StrBufAppendPrintf(vset, "%ld:%ld", lo, hi);
 512                         }
 513                 }
 514
 515                 if ((is_seen) && (i == num_msgs - 1)) {
 516                         if (StrLength(vset) > 0) {
 517                                 StrBufAppendBufPlain(vset, HKEY(","), 0);
 518                         }
 519                         if ((i==0) || (was_seen == 0)) {
 520                                 StrBufAppendPrintf(vset, "%ld", msglist[i]);
 521                         }
 522                         else {
 523                                 StrBufAppendPrintf(vset, "%ld:%ld", lo, msglist[i]);
 524                         }
 525                 }
 526
 527                 was_seen = is_seen;
 528         }
 529
 530         /*
 531          * We will have to stuff this string back into a 4096 byte buffer, so if it's
 532          * larger than that now, truncate it by removing tokens from the beginning.
 533          * The limit of 100 iterations is there to prevent an infinite loop in case
 534          * something unexpected happens.
 535          */
 536         int number_of_truncations = 0;
 537         while ( (StrLength(vset) > SIZ) && (number_of_truncations < 100) ) {
 538                 StrBufRemove_token(vset, 0, ',');
 539                 ++number_of_truncations;
 540         }
 541
 542         /*
 543          * If we're truncating the sequence set of messages marked with the 'seen' flag,
 544          * we want the earliest messages (the truncated ones) to be marked, not unmarked.
 545          * Otherwise messages at the beginning will suddenly appear to be 'unseen'.
 546          */
 547         if ( (which_set == ctdlsetseen_seen) && (number_of_truncations > 0) ) {
 548                 StrBuf *first_tok;
 549                 first_tok = NewStrBuf();
 550                 StrBufExtract_token(first_tok, vset, 0, ',');
 551                 StrBufRemove_token(vset, 0, ',');
 552
 553                 if (StrBufNum_tokens(first_tok, ':') > 1) {
 554                         StrBufRemove_token(first_tok, 0, ':');
 555                 }
 556
 557                 StrBuf *new_set;
 558                 new_set = NewStrBuf();
 559                 StrBufAppendBufPlain(new_set, HKEY("1:"), 0);
 560                 StrBufAppendBuf(new_set, first_tok, 0);
 561                 StrBufAppendBufPlain(new_set, HKEY(":"), 0);
 562                 StrBufAppendBuf(new_set, vset, 0);
 563
 564                 FreeStrBuf(&vset);
 565                 FreeStrBuf(&first_tok);
 566                 vset = new_set;
 567         }
 568
 569         MSG_syslog(LOG_DEBUG, " after update: %s\n", ChrPtr(vset));
 570
 571         /* Decide which message set we're manipulating */
 572         switch (which_set) {
 573                 case ctdlsetseen_seen:
 574                         safestrncpy(vbuf.v_seen, ChrPtr(vset), sizeof vbuf.v_seen);
 575                         break;
 576                 case ctdlsetseen_answered:
 577                         safestrncpy(vbuf.v_answered, ChrPtr(vset), sizeof vbuf.v_answered);
 578                         break;
 579         }
 580
 581         free(is_set);
 582         free(msglist);
 583         CtdlSetRelationship(&vbuf, which_user, which_room);
 584         FreeStrBuf(&vset);
 585 }
 586
 587
 588 /*
 589  * API function to perform an operation for each qualifying message in the
 590  * current room.  (Returns the number of messages processed.)
 591  */
 592 int CtdlForEachMessage(int mode, long ref, char *search_string,
 593                         char *content_type,
 594                         struct CtdlMessage *compare,
 595                         ForEachMsgCallback CallBack,
 596                         void *userdata)
 597 {
 598         struct CitContext *CCC = CC;
 599         int a, i, j;
 600         visit vbuf;
 601         struct cdbdata *cdbfr;
 602         long *msglist = NULL;
 603         int num_msgs = 0;
 604         int num_processed = 0;
 605         long thismsg;
 606         struct MetaData smi;
 607         struct CtdlMessage *msg = NULL;
 608         int is_seen = 0;
 609         long lastold = 0L;
 610         int printed_lastold = 0;
 611         int num_search_msgs = 0;
 612         long *search_msgs = NULL;
 613         regex_t re;
 614         int need_to_free_re = 0;
 615         regmatch_t pm;
 616
 617         if ((content_type) && (!IsEmptyStr(content_type))) {
 618                 regcomp(&re, content_type, 0);
 619                 need_to_free_re = 1;
 620         }
 621
 622         /* Learn about the user and room in question */
 623         if (server_shutting_down) {
 624                 if (need_to_free_re) regfree(&re);
 625                 return -1;
 626         }
 627         CtdlGetUser(&CCC->user, CCC->curr_user);
 628
 629         if (server_shutting_down) {
 630                 if (need_to_free_re) regfree(&re);
 631                 return -1;
 632         }
 633         CtdlGetRelationship(&vbuf, &CCC->user, &CCC->room);
 634
 635         if (server_shutting_down) {
 636                 if (need_to_free_re) regfree(&re);
 637                 return -1;
 638         }
 639
 640         /* Load the message list */
 641         cdbfr = cdb_fetch(CDB_MSGLISTS, &CCC->room.QRnumber, sizeof(long));
 642         if (cdbfr == NULL) {
 643                 if (need_to_free_re) regfree(&re);
 644                 return 0;       /* No messages at all?  No further action. */
 645         }
 646
 647         msglist = (long *) cdbfr->ptr;
 648         num_msgs = cdbfr->len / sizeof(long);
 649
 650         cdbfr->ptr = NULL;      /* clear this so that cdb_free() doesn't free it */
 651         cdb_free(cdbfr);        /* we own this memory now */
 652
 653         /*
 654          * Now begin the traversal.
 655          */
 656         if (num_msgs > 0) for (a = 0; a < num_msgs; ++a) {
 657
 658                 /* If the caller is looking for a specific MIME type, filter
 659                  * out all messages which are not of the type requested.
 660                  */
 661                 if ((content_type != NULL) && (!IsEmptyStr(content_type))) {
 662
 663                         /* This call to GetMetaData() sits inside this loop
 664                          * so that we only do the extra database read per msg
 665                          * if we need to.  Doing the extra read all the time
 666                          * really kills the server.  If we ever need to use
 667                          * metadata for another search criterion, we need to
 668                          * move the read somewhere else -- but still be smart
 669                          * enough to only do the read if the caller has
 670                          * specified something that will need it.
 671                          */
 672                         if (server_shutting_down) {
 673                                 if (need_to_free_re) regfree(&re);
 674                                 free(msglist);
 675                                 return -1;
 676                         }
 677                         GetMetaData(&smi, msglist[a]);
 678
 679                         /* if (strcasecmp(smi.meta_content_type, content_type)) { old non-regex way */
 680                         if (regexec(&re, smi.meta_content_type, 1, &pm, 0) != 0) {
 681                                 msglist[a] = 0L;
 682                         }
 683                 }
 684         }
 685
 686         num_msgs = sort_msglist(msglist, num_msgs);
 687
 688         /* If a template was supplied, filter out the messages which
 689          * don't match.  (This could induce some delays!)
 690          */
 691         if (num_msgs > 0) {
 692                 if (compare != NULL) {
 693                         for (a = 0; a < num_msgs; ++a) {
 694                                 if (server_shutting_down) {
 695                                         if (need_to_free_re) regfree(&re);
 696                                         free(msglist);
 697                                         return -1;
 698                                 }
 699                                 msg = CtdlFetchMessage(msglist[a], 1);
 700                                 if (msg != NULL) {
 701                                         if (CtdlMsgCmp(msg, compare)) {
 702                                                 msglist[a] = 0L;
 703                                         }
 704                                         CtdlFreeMessage(msg);
 705                                 }
 706                         }
 707                 }
 708         }
 709
 710         /* If a search string was specified, get a message list from
 711          * the full text index and remove messages which aren't on both
 712          * lists.
 713          *
 714          * How this works:
 715          * Since the lists are sorted and strictly ascending, and the
 716          * output list is guaranteed to be shorter than or equal to the
 717          * input list, we overwrite the bottom of the input list.  This
 718          * eliminates the need to memmove big chunks of the list over and
 719          * over again.
 720          */
 721         if ( (num_msgs > 0) && (mode == MSGS_SEARCH) && (search_string) ) {
 722
 723                 /* Call search module via hook mechanism.
 724                  * NULL means use any search function available.
 725                  * otherwise replace with a char * to name of search routine
 726                  */
 727                 CtdlModuleDoSearch(&num_search_msgs, &search_msgs, search_string, "fulltext");
 728
 729                 if (num_search_msgs > 0) {
 730
 731                         int orig_num_msgs;
 732
 733                         orig_num_msgs = num_msgs;
 734                         num_msgs = 0;
 735                         for (i=0; i<orig_num_msgs; ++i) {
 736                                 for (j=0; j<num_search_msgs; ++j) {
 737                                         if (msglist[i] == search_msgs[j]) {
 738                                                 msglist[num_msgs++] = msglist[i];
 739                                         }
 740                                 }
 741                         }
 742                 }
 743                 else {
 744                         num_msgs = 0;   /* No messages qualify */
 745                 }
 746                 if (search_msgs != NULL) free(search_msgs);
 747
 748                 /* Now that we've purged messages which don't contain the search
 749                  * string, treat a MSGS_SEARCH just like a MSGS_ALL from this
 750                  * point on.
 751                  */
 752                 mode = MSGS_ALL;
 753         }
 754
 755         /*
 756          * Now iterate through the message list, according to the
 757          * criteria supplied by the caller.
 758          */
 759         if (num_msgs > 0)
 760                 for (a = 0; a < num_msgs; ++a) {
 761                         if (server_shutting_down) {
 762                                 if (need_to_free_re) regfree(&re);
 763                                 free(msglist);
 764                                 return num_processed;
 765                         }
 766                         thismsg = msglist[a];
 767                         if (mode == MSGS_ALL) {
 768                                 is_seen = 0;
 769                         }
 770                         else {
 771                                 is_seen = is_msg_in_sequence_set(
 772                                                         vbuf.v_seen, thismsg);
 773                                 if (is_seen) lastold = thismsg;
 774                         }
 775                         if ((thismsg > 0L)
 776                             && (
 777
 778                                        (mode == MSGS_ALL)
 779                                        || ((mode == MSGS_OLD) && (is_seen))
 780                                        || ((mode == MSGS_NEW) && (!is_seen))
 781                                        || ((mode == MSGS_LAST) && (a >= (num_msgs - ref)))
 782                                    || ((mode == MSGS_FIRST) && (a < ref))
 783                                 || ((mode == MSGS_GT) && (thismsg > ref))
 784                                 || ((mode == MSGS_LT) && (thismsg < ref))
 785                                 || ((mode == MSGS_EQ) && (thismsg == ref))
 786                             )
 787                             ) {
 788                                 if ((mode == MSGS_NEW) && (CCC->user.flags & US_LASTOLD) && (lastold > 0L) && (printed_lastold == 0) && (!is_seen)) {
 789                                         if (CallBack)
 790                                                 CallBack(lastold, userdata);
 791                                         printed_lastold = 1;
 792                                         ++num_processed;
 793                                 }
 794                                 if (CallBack) CallBack(thismsg, userdata);
 795                                 ++num_processed;
 796                         }
 797                 }
 798         if (need_to_free_re) regfree(&re);
 799
 800         /*
 801          * We cache the most recent msglist in order to do security checks later
 802          */
 803         if (CCC->client_socket > 0) {
 804                 if (CCC->cached_msglist != NULL) {
 805                         free(CCC->cached_msglist);
 806                 }
 807                 CCC->cached_msglist = msglist;
 808                 CCC->cached_num_msgs = num_msgs;
 809         }
 810         else {
 811                 free(msglist);
 812         }
 813
 814         return num_processed;
 815 }
 816
 817
 818
 819 /*
 820  * cmd_msgs()  -  get list of message #'s in this room
 821  *              implements the MSGS server command using CtdlForEachMessage()
 822  */
 823 void cmd_msgs(char *cmdbuf)
 824 {
 825         int mode = 0;
 826         char which[16];
 827         char buf[256];
 828         char tfield[256];
 829         char tvalue[256];
 830         int cm_ref = 0;
 831         int i;
 832         int with_template = 0;
 833         struct CtdlMessage *template = NULL;
 834         char search_string[1024];
 835         ForEachMsgCallback CallBack;
 836
 837         if (CtdlAccessCheck(ac_logged_in_or_guest)) return;
 838
 839         extract_token(which, cmdbuf, 0, '|', sizeof which);
 840         cm_ref = extract_int(cmdbuf, 1);
 841         extract_token(search_string, cmdbuf, 1, '|', sizeof search_string);
 842         with_template = extract_int(cmdbuf, 2);
 843         switch (extract_int(cmdbuf, 3))
 844         {
 845         default:
 846         case MSG_HDRS_BRIEF:
 847                 CallBack = simple_listing;
 848                 break;
 849         case MSG_HDRS_ALL:
 850                 CallBack = headers_listing;
 851                 break;
 852         case MSG_HDRS_EUID:
 853                 CallBack = headers_euid;
 854                 break;
 855         }
 856
 857         strcat(which, "   ");
 858         if (!strncasecmp(which, "OLD", 3))
 859                 mode = MSGS_OLD;
 860         else if (!strncasecmp(which, "NEW", 3))
 861                 mode = MSGS_NEW;
 862         else if (!strncasecmp(which, "FIRST", 5))
 863                 mode = MSGS_FIRST;
 864         else if (!strncasecmp(which, "LAST", 4))
 865                 mode = MSGS_LAST;
 866         else if (!strncasecmp(which, "GT", 2))
 867                 mode = MSGS_GT;
 868         else if (!strncasecmp(which, "LT", 2))
 869                 mode = MSGS_LT;
 870         else if (!strncasecmp(which, "SEARCH", 6))
 871                 mode = MSGS_SEARCH;
 872         else
 873                 mode = MSGS_ALL;
 874
 875         if ( (mode == MSGS_SEARCH) && (!config.c_enable_fulltext) ) {
 876                 cprintf("%d Full text index is not enabled on this server.\n",
 877                         ERROR + CMD_NOT_SUPPORTED);
 878                 return;
 879         }
 880
 881         if (with_template) {
 882                 unbuffer_output();
 883                 cprintf("%d Send template then receive message list\n",
 884                         START_CHAT_MODE);
 885                 template = (struct CtdlMessage *)
 886                         malloc(sizeof(struct CtdlMessage));
 887                 memset(template, 0, sizeof(struct CtdlMessage));
 888                 template->cm_magic = CTDLMESSAGE_MAGIC;
 889                 template->cm_anon_type = MES_NORMAL;
 890
 891                 while(client_getln(buf, sizeof buf) >= 0 && strcmp(buf,"000")) {
 892                         extract_token(tfield, buf, 0, '|', sizeof tfield);
 893                         extract_token(tvalue, buf, 1, '|', sizeof tvalue);
 894                         for (i='A'; i<='Z'; ++i) if (msgkeys[i]!=NULL) {
 895                                 if (!strcasecmp(tfield, msgkeys[i])) {
 896                                         template->cm_fields[i] =
 897                                                 strdup(tvalue);
 898                                 }
 899                         }
 900                 }
 901                 buffer_output();
 902         }
 903         else {
 904                 cprintf("%d  \n", LISTING_FOLLOWS);
 905         }
 906
 907         CtdlForEachMessage(mode,
 908                            ( (mode == MSGS_SEARCH) ? 0 : cm_ref ),
 909                            ( (mode == MSGS_SEARCH) ? search_string : NULL ),
 910                            NULL,
 911                            template,
 912                            CallBack,
 913                            NULL);
 914         if (template != NULL) CtdlFreeMessage(template);
 915         cprintf("000\n");
 916 }
 917
 918
 919
 920
 921 /*
 922  * help_subst()  -  support routine for help file viewer
 923  */
 924 void help_subst(char *strbuf, char *source, char *dest)
 925 {
 926         char workbuf[SIZ];
 927         int p;
 928
 929         while (p = pattern2(strbuf, source), (p >= 0)) {
 930                 strcpy(workbuf, &strbuf[p + strlen(source)]);
 931                 strcpy(&strbuf[p], dest);
 932                 strcat(strbuf, workbuf);
 933         }
 934 }
 935
 936
 937 void do_help_subst(char *buffer)
 938 {
 939         char buf2[16];
 940
 941         help_subst(buffer, "^nodename", config.c_nodename);
 942         help_subst(buffer, "^humannode", config.c_humannode);
 943         help_subst(buffer, "^fqdn", config.c_fqdn);
 944         help_subst(buffer, "^username", CC->user.fullname);
 945         snprintf(buf2, sizeof buf2, "%ld", CC->user.usernum);
 946         help_subst(buffer, "^usernum", buf2);
 947         help_subst(buffer, "^sysadm", config.c_sysadm);
 948         help_subst(buffer, "^variantname", CITADEL);
 949         snprintf(buf2, sizeof buf2, "%d", config.c_maxsessions);
 950         help_subst(buffer, "^maxsessions", buf2);
 951         help_subst(buffer, "^bbsdir", ctdl_message_dir);
 952 }
 953
 954
 955
 956 /*
 957  * memfmout()  -  Citadel text formatter and paginator.
 958  *           Although the original purpose of this routine was to format
 959  *           text to the reader's screen width, all we're really using it
 960  *           for here is to format text out to 80 columns before sending it
 961  *           to the client.  The client software may reformat it again.
 962  */
 963 void memfmout(
 964         char *mptr,             /* where are we going to get our text from? */
 965         const char *nl          /* string to terminate lines with */
 966 ) {
 967         struct CitContext *CCC = CC;
 968         int column = 0;
 969         unsigned char ch = 0;
 970         char outbuf[1024];
 971         int len = 0;
 972         int nllen = 0;
 973
 974         if (!mptr) return;
 975         nllen = strlen(nl);
 976         while (ch=*(mptr++), ch != 0) {
 977
 978                 if (ch == '\n') {
 979                         if (client_write(outbuf, len) == -1)
 980                         {
 981                                 MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
 982                                 return;
 983                         }
 984                         len = 0;
 985                         if (client_write(nl, nllen) == -1)
 986                         {
 987                                 MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
 988                                 return;
 989                         }
 990                         column = 0;
 991                 }
 992                 else if (ch == '\r') {
 993                         /* Ignore carriage returns.  Newlines are always LF or CRLF but never CR. */
 994                 }
 995                 else if (isspace(ch)) {
 996                         if (column > 72) {              /* Beyond 72 columns, break on the next space */
 997                                 if (client_write(outbuf, len) == -1)
 998                                 {
 999                                         MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1000                                         return;
1001                                 }
1002                                 len = 0;
1003                                 if (client_write(nl, nllen) == -1)
1004                                 {
1005                                         MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1006                                         return;
1007                                 }
1008                                 column = 0;
1009                         }
1010                         else {
1011                                 outbuf[len++] = ch;
1012                                 ++column;
1013                         }
1014                 }
1015                 else {
1016                         outbuf[len++] = ch;
1017                         ++column;
1018                         if (column > 1000) {            /* Beyond 1000 columns, break anywhere */
1019                                 if (client_write(outbuf, len) == -1)
1020                                 {
1021                                         MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1022                                         return;
1023                                 }
1024                                 len = 0;
1025                                 if (client_write(nl, nllen) == -1)
1026                                 {
1027                                         MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1028                                         return;
1029                                 }
1030                                 column = 0;
1031                         }
1032                 }
1033         }
1034         if (len) {
1035                 if (client_write(outbuf, len) == -1)
1036                 {
1037                         MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1038                         return;
1039                 }
1040                 len = 0;
1041                 client_write(nl, nllen);
1042                 column = 0;
1043         }
1044 }
1045
1046
1047
1048 /*
1049  * Callback function for mime parser that simply lists the part
1050  */
1051 void list_this_part(char *name, char *filename, char *partnum, char *disp,
1052                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1053                     char *cbid, void *cbuserdata)
1054 {
1055         struct ma_info *ma;
1056
1057         ma = (struct ma_info *)cbuserdata;
1058         if (ma->is_ma == 0) {
1059                 cprintf("part=%s|%s|%s|%s|%s|%ld|%s|%s\n",
1060                         name,
1061                         filename,
1062                         partnum,
1063                         disp,
1064                         cbtype,
1065                         (long)length,
1066                         cbid,
1067                         cbcharset);
1068         }
1069 }
1070
1071 /*
1072  * Callback function for multipart prefix
1073  */
1074 void list_this_pref(char *name, char *filename, char *partnum, char *disp,
1075                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1076                     char *cbid, void *cbuserdata)
1077 {
1078         struct ma_info *ma;
1079
1080         ma = (struct ma_info *)cbuserdata;
1081         if (!strcasecmp(cbtype, "multipart/alternative")) {
1082                 ++ma->is_ma;
1083         }
1084
1085         if (ma->is_ma == 0) {
1086                 cprintf("pref=%s|%s\n", partnum, cbtype);
1087         }
1088 }
1089
1090 /*
1091  * Callback function for multipart sufffix
1092  */
1093 void list_this_suff(char *name, char *filename, char *partnum, char *disp,
1094                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1095                     char *cbid, void *cbuserdata)
1096 {
1097         struct ma_info *ma;
1098
1099         ma = (struct ma_info *)cbuserdata;
1100         if (ma->is_ma == 0) {
1101                 cprintf("suff=%s|%s\n", partnum, cbtype);
1102         }
1103         if (!strcasecmp(cbtype, "multipart/alternative")) {
1104                 --ma->is_ma;
1105         }
1106 }
1107
1108
1109 /*
1110  * Callback function for mime parser that opens a section for downloading
1111  */
1112 void mime_download(char *name, char *filename, char *partnum, char *disp,
1113                    void *content, char *cbtype, char *cbcharset, size_t length,
1114                    char *encoding, char *cbid, void *cbuserdata)
1115 {
1116         int rv = 0;
1117         CitContext *CCC = MyContext();
1118
1119         /* Silently go away if there's already a download open. */
1120         if (CCC->download_fp != NULL)
1121                 return;
1122
1123         if (
1124                 (!IsEmptyStr(partnum) && (!strcasecmp(CCC->download_desired_section, partnum)))
1125         ||      (!IsEmptyStr(cbid) && (!strcasecmp(CCC->download_desired_section, cbid)))
1126         ) {
1127                 CCC->download_fp = tmpfile();
1128                 if (CCC->download_fp == NULL) {
1129                         MSG_syslog(LOG_EMERG, "mime_download(): Couldn't write: %s\n",
1130                                     strerror(errno));
1131                         cprintf("%d cannot open temporary file: %s\n",
1132                                 ERROR + INTERNAL_ERROR, strerror(errno));
1133                         return;
1134                 }
1135
1136                 rv = fwrite(content, length, 1, CC->download_fp);
1137                 if (rv <= 0) {
1138                         MSG_syslog(LOG_EMERG, "mime_download(): Couldn't write: %s\n",
1139                                    strerror(errno));
1140                         cprintf("%d unable to write tempfile.\n",
1141                                 ERROR + TOO_BIG);
1142                         fclose(CCC->download_fp);
1143                         CCC->download_fp = NULL;
1144                         return;
1145                 }
1146                 fflush(CCC->download_fp);
1147                 rewind(CCC->download_fp);
1148
1149                 OpenCmdResult(filename, cbtype);
1150         }
1151 }
1152
1153
1154
1155 /*
1156  * Callback function for mime parser that outputs a section all at once.
1157  * We can specify the desired section by part number *or* content-id.
1158  */
1159 void mime_spew_section(char *name, char *filename, char *partnum, char *disp,
1160                    void *content, char *cbtype, char *cbcharset, size_t length,
1161                    char *encoding, char *cbid, void *cbuserdata)
1162 {
1163         int *found_it = (int *)cbuserdata;
1164
1165         if (
1166                 (!IsEmptyStr(partnum) && (!strcasecmp(CC->download_desired_section, partnum)))
1167         ||      (!IsEmptyStr(cbid) && (!strcasecmp(CC->download_desired_section, cbid)))
1168         ) {
1169                 *found_it = 1;
1170                 cprintf("%d %d|-1|%s|%s|%s\n",
1171                         BINARY_FOLLOWS,
1172                         (int)length,
1173                         filename,
1174                         cbtype,
1175                         cbcharset
1176                 );
1177                 client_write(content, length);
1178         }
1179 }
1180
1181
1182 /*
1183  * Load a message from disk into memory.
1184  * This is used by CtdlOutputMsg() and other fetch functions.
1185  *
1186  * NOTE: Caller is responsible for freeing the returned CtdlMessage struct
1187  *       using the CtdlMessageFree() function.
1188  */
1189 struct CtdlMessage *CtdlFetchMessage(long msgnum, int with_body)
1190 {
1191         struct CitContext *CCC = CC;
1192         struct cdbdata *dmsgtext;
1193         struct CtdlMessage *ret = NULL;
1194         char *mptr;
1195         char *upper_bound;
1196         cit_uint8_t ch;
1197         cit_uint8_t field_header;
1198
1199         MSG_syslog(LOG_DEBUG, "CtdlFetchMessage(%ld, %d)\n", msgnum, with_body);
1200         dmsgtext = cdb_fetch(CDB_MSGMAIN, &msgnum, sizeof(long));
1201         if (dmsgtext == NULL) {
1202                 return NULL;
1203         }
1204         mptr = dmsgtext->ptr;
1205         upper_bound = mptr + dmsgtext->len;
1206
1207         /* Parse the three bytes that begin EVERY message on disk.
1208          * The first is always 0xFF, the on-disk magic number.
1209          * The second is the anonymous/public type byte.
1210          * The third is the format type byte (vari, fixed, or MIME).
1211          */
1212         ch = *mptr++;
1213         if (ch != 255) {
1214                 MSG_syslog(LOG_ERR, "Message %ld appears to be corrupted.\n", msgnum);
1215                 cdb_free(dmsgtext);
1216                 return NULL;
1217         }
1218         ret = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
1219         memset(ret, 0, sizeof(struct CtdlMessage));
1220
1221         ret->cm_magic = CTDLMESSAGE_MAGIC;
1222         ret->cm_anon_type = *mptr++;    /* Anon type byte */
1223         ret->cm_format_type = *mptr++;  /* Format type byte */
1224
1225         /*
1226          * The rest is zero or more arbitrary fields.  Load them in.
1227          * We're done when we encounter either a zero-length field or
1228          * have just processed the 'M' (message text) field.
1229          */
1230         do {
1231                 if (mptr >= upper_bound) {
1232                         break;
1233                 }
1234                 field_header = *mptr++;
1235                 ret->cm_fields[field_header] = strdup(mptr);
1236
1237                 while (*mptr++ != 0);   /* advance to next field */
1238
1239         } while ((mptr < upper_bound) && (field_header != 'M'));
1240
1241         cdb_free(dmsgtext);
1242
1243         /* Always make sure there's something in the msg text field.  If
1244          * it's NULL, the message text is most likely stored separately,
1245          * so go ahead and fetch that.  Failing that, just set a dummy
1246          * body so other code doesn't barf.
1247          */
1248         if ( (ret->cm_fields['M'] == NULL) && (with_body) ) {
1249                 dmsgtext = cdb_fetch(CDB_BIGMSGS, &msgnum, sizeof(long));
1250                 if (dmsgtext != NULL) {
1251                         ret->cm_fields['M'] = dmsgtext->ptr;
1252                         dmsgtext->ptr = NULL;
1253                         cdb_free(dmsgtext);
1254                 }
1255         }
1256         if (ret->cm_fields['M'] == NULL) {
1257                 ret->cm_fields['M'] = strdup("\r\n\r\n (no text)\r\n");
1258         }
1259
1260         /* Perform "before read" hooks (aborting if any return nonzero) */
1261         if (PerformMessageHooks(ret, EVT_BEFOREREAD) > 0) {
1262                 CtdlFreeMessage(ret);
1263                 return NULL;
1264         }
1265
1266         return (ret);
1267 }
1268
1269
1270 /*
1271  * Returns 1 if the supplied pointer points to a valid Citadel message.
1272  * If the pointer is NULL or the magic number check fails, returns 0.
1273  */
1274 int is_valid_message(struct CtdlMessage *msg) {
1275         if (msg == NULL)
1276                 return 0;
1277         if ((msg->cm_magic) != CTDLMESSAGE_MAGIC) {
1278                 struct CitContext *CCC = CC;
1279                 MSGM_syslog(LOG_WARNING, "is_valid_message() -- self-check failed\n");
1280                 return 0;
1281         }
1282         return 1;
1283 }
1284
1285 void CtdlFreeMessageContents(struct CtdlMessage *msg)
1286 {
1287         int i;
1288
1289         for (i = 0; i < 256; ++i)
1290                 if (msg->cm_fields[i] != NULL) {
1291                         free(msg->cm_fields[i]);
1292                 }
1293
1294         msg->cm_magic = 0;      /* just in case */
1295 }
1296 /*
1297  * 'Destructor' for struct CtdlMessage
1298  */
1299 void CtdlFreeMessage(struct CtdlMessage *msg)
1300 {
1301         if (is_valid_message(msg) == 0)
1302         {
1303                 if (msg != NULL) free (msg);
1304                 return;
1305         }
1306         CtdlFreeMessageContents(msg);
1307         free(msg);
1308 }
1309
1310
1311 /*
1312  * Pre callback function for multipart/alternative
1313  *
1314  * NOTE: this differs from the standard behavior for a reason.  Normally when
1315  *       displaying multipart/alternative you want to show the _last_ usable
1316  *       format in the message.  Here we show the _first_ one, because it's
1317  *       usually text/plain.  Since this set of functions is designed for text
1318  *       output to non-MIME-aware clients, this is the desired behavior.
1319  *
1320  */
1321 void fixed_output_pre(char *name, char *filename, char *partnum, char *disp,
1322                 void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1323                 char *cbid, void *cbuserdata)
1324 {
1325         struct CitContext *CCC = CC;
1326         struct ma_info *ma;
1327
1328         ma = (struct ma_info *)cbuserdata;
1329         MSG_syslog(LOG_DEBUG, "fixed_output_pre() type=<%s>\n", cbtype);
1330         if (!strcasecmp(cbtype, "multipart/alternative")) {
1331                 ++ma->is_ma;
1332                 ma->did_print = 0;
1333         }
1334         if (!strcasecmp(cbtype, "message/rfc822")) {
1335                 ++ma->freeze;
1336         }
1337 }
1338
1339 /*
1340  * Post callback function for multipart/alternative
1341  */
1342 void fixed_output_post(char *name, char *filename, char *partnum, char *disp,
1343                 void *content, char *cbtype, char *cbcharset, size_t length,
1344                 char *encoding, char *cbid, void *cbuserdata)
1345 {
1346         struct CitContext *CCC = CC;
1347         struct ma_info *ma;
1348
1349         ma = (struct ma_info *)cbuserdata;
1350         MSG_syslog(LOG_DEBUG, "fixed_output_post() type=<%s>\n", cbtype);
1351         if (!strcasecmp(cbtype, "multipart/alternative")) {
1352                 --ma->is_ma;
1353                 ma->did_print = 0;
1354         }
1355         if (!strcasecmp(cbtype, "message/rfc822")) {
1356                 --ma->freeze;
1357         }
1358 }
1359
1360 /*
1361  * Inline callback function for mime parser that wants to display text
1362  */
1363 void fixed_output(char *name, char *filename, char *partnum, char *disp,
1364                 void *content, char *cbtype, char *cbcharset, size_t length,
1365                 char *encoding, char *cbid, void *cbuserdata)
1366 {
1367         struct CitContext *CCC = CC;
1368         char *ptr;
1369         char *wptr;
1370         size_t wlen;
1371         struct ma_info *ma;
1372
1373         ma = (struct ma_info *)cbuserdata;
1374
1375         MSG_syslog(LOG_DEBUG,
1376                 "fixed_output() part %s: %s (%s) (%ld bytes)\n",
1377                 partnum, filename, cbtype, (long)length);
1378
1379         /*
1380          * If we're in the middle of a multipart/alternative scope and
1381          * we've already printed another section, skip this one.
1382          */
1383         if ( (ma->is_ma) && (ma->did_print) ) {
1384                 MSG_syslog(LOG_DEBUG, "Skipping part %s (%s)\n", partnum, cbtype);
1385                 return;
1386         }
1387         ma->did_print = 1;
1388
1389         if ( (!strcasecmp(cbtype, "text/plain"))
1390            || (IsEmptyStr(cbtype)) ) {
1391                 wptr = content;
1392                 if (length > 0) {
1393                         client_write(wptr, length);
1394                         if (wptr[length-1] != '\n') {
1395                                 cprintf("\n");
1396                         }
1397                 }
1398                 return;
1399         }
1400
1401         if (!strcasecmp(cbtype, "text/html")) {
1402                 ptr = html_to_ascii(content, length, 80, 0);
1403                 wlen = strlen(ptr);
1404                 client_write(ptr, wlen);
1405                 if ((wlen > 0) && (ptr[wlen-1] != '\n')) {
1406                         cprintf("\n");
1407                 }
1408                 free(ptr);
1409                 return;
1410         }
1411
1412         if (ma->use_fo_hooks) {
1413                 if (PerformFixedOutputHooks(cbtype, content, length)) {
1414                 /* above function returns nonzero if it handled the part */
1415                         return;
1416                 }
1417         }
1418
1419         if (strncasecmp(cbtype, "multipart/", 10)) {
1420                 cprintf("Part %s: %s (%s) (%ld bytes)\r\n",
1421                         partnum, filename, cbtype, (long)length);
1422                 return;
1423         }
1424 }
1425
1426 /*
1427  * The client is elegant and sophisticated and wants to be choosy about
1428  * MIME content types, so figure out which multipart/alternative part
1429  * we're going to send.
1430  *
1431  * We use a system of weights.  When we find a part that matches one of the
1432  * MIME types we've declared as preferential, we can store it in ma->chosen_part
1433  * and then set ma->chosen_pref to that MIME type's position in our preference
1434  * list.  If we then hit another match, we only replace the first match if
1435  * the preference value is lower.
1436  */
1437 void choose_preferred(char *name, char *filename, char *partnum, char *disp,
1438                 void *content, char *cbtype, char *cbcharset, size_t length,
1439                 char *encoding, char *cbid, void *cbuserdata)
1440 {
1441         struct CitContext *CCC = CC;
1442         char buf[1024];
1443         int i;
1444         struct ma_info *ma;
1445
1446         ma = (struct ma_info *)cbuserdata;
1447
1448         // NOTE: REMOVING THIS CONDITIONAL FIXES BUG 220
1449         //       http://bugzilla.citadel.org/show_bug.cgi?id=220
1450         // I don't know if there are any side effects!  Please TEST TEST TEST
1451         //if (ma->is_ma > 0) {
1452
1453         for (i=0; i<num_tokens(CCC->preferred_formats, '|'); ++i) {
1454                 extract_token(buf, CCC->preferred_formats, i, '|', sizeof buf);
1455                 if ( (!strcasecmp(buf, cbtype)) && (!ma->freeze) ) {
1456                         if (i < ma->chosen_pref) {
1457                                 MSG_syslog(LOG_DEBUG, "Setting chosen part: <%s>\n", partnum);
1458                                 safestrncpy(ma->chosen_part, partnum, sizeof ma->chosen_part);
1459                                 ma->chosen_pref = i;
1460                         }
1461                 }
1462         }
1463 }
1464
1465 /*
1466  * Now that we've chosen our preferred part, output it.
1467  */
1468 void output_preferred(char *name,
1469                       char *filename,
1470                       char *partnum,
1471                       char *disp,
1472                       void *content,
1473                       char *cbtype,
1474                       char *cbcharset,
1475                       size_t length,
1476                       char *encoding,
1477                       char *cbid,
1478                       void *cbuserdata)
1479 {
1480         struct CitContext *CCC = CC;
1481         int i;
1482         char buf[128];
1483         int add_newline = 0;
1484         char *text_content;
1485         struct ma_info *ma;
1486         char *decoded = NULL;
1487         size_t bytes_decoded;
1488         int rc = 0;
1489
1490         ma = (struct ma_info *)cbuserdata;
1491
1492         /* This is not the MIME part you're looking for... */
1493         if (strcasecmp(partnum, ma->chosen_part)) return;
1494
1495         /* If the content-type of this part is in our preferred formats
1496          * list, we can simply output it verbatim.
1497          */
1498         for (i=0; i<num_tokens(CCC->preferred_formats, '|'); ++i) {
1499                 extract_token(buf, CCC->preferred_formats, i, '|', sizeof buf);
1500                 if (!strcasecmp(buf, cbtype)) {
1501                         /* Yeah!  Go!  W00t!! */
1502                         if (ma->dont_decode == 0)
1503                                 rc = mime_decode_now (content,
1504                                                       length,
1505                                                       encoding,
1506                                                       &decoded,
1507                                                       &bytes_decoded);
1508                         if (rc < 0)
1509                                 break; /* Give us the chance, maybe theres another one. */
1510
1511                         if (rc == 0) text_content = (char *)content;
1512                         else {
1513                                 text_content = decoded;
1514                                 length = bytes_decoded;
1515                         }
1516
1517                         if (text_content[length-1] != '\n') {
1518                                 ++add_newline;
1519                         }
1520                         cprintf("Content-type: %s", cbtype);
1521                         if (!IsEmptyStr(cbcharset)) {
1522                                 cprintf("; charset=%s", cbcharset);
1523                         }
1524                         cprintf("\nContent-length: %d\n",
1525                                 (int)(length + add_newline) );
1526                         if (!IsEmptyStr(encoding)) {
1527                                 cprintf("Content-transfer-encoding: %s\n", encoding);
1528                         }
1529                         else {
1530                                 cprintf("Content-transfer-encoding: 7bit\n");
1531                         }
1532                         cprintf("X-Citadel-MSG4-Partnum: %s\n", partnum);
1533                         cprintf("\n");
1534                         if (client_write(text_content, length) == -1)
1535                         {
1536                                 MSGM_syslog(LOG_ERR, "output_preferred(): aborting due to write failure.\n");
1537                                 return;
1538                         }
1539                         if (add_newline) cprintf("\n");
1540                         if (decoded != NULL) free(decoded);
1541                         return;
1542                 }
1543         }
1544
1545         /* No translations required or possible: output as text/plain */
1546         cprintf("Content-type: text/plain\n\n");
1547         rc = 0;
1548         if (ma->dont_decode == 0)
1549                 rc = mime_decode_now (content,
1550                                       length,
1551                                       encoding,
1552                                       &decoded,
1553                                       &bytes_decoded);
1554         if (rc < 0)
1555                 return; /* Give us the chance, maybe theres another one. */
1556
1557         if (rc == 0) text_content = (char *)content;
1558         else {
1559                 text_content = decoded;
1560                 length = bytes_decoded;
1561         }
1562
1563         fixed_output(name, filename, partnum, disp, text_content, cbtype, cbcharset,
1564                         length, encoding, cbid, cbuserdata);
1565         if (decoded != NULL) free(decoded);
1566 }
1567
1568
1569 struct encapmsg {
1570         char desired_section[64];
1571         char *msg;
1572         size_t msglen;
1573 };
1574
1575
1576 /*
1577  * Callback function for
1578  */
1579 void extract_encapsulated_message(char *name, char *filename, char *partnum, char *disp,
1580                    void *content, char *cbtype, char *cbcharset, size_t length,
1581                    char *encoding, char *cbid, void *cbuserdata)
1582 {
1583         struct encapmsg *encap;
1584
1585         encap = (struct encapmsg *)cbuserdata;
1586
1587         /* Only proceed if this is the desired section... */
1588         if (!strcasecmp(encap->desired_section, partnum)) {
1589                 encap->msglen = length;
1590                 encap->msg = malloc(length + 2);
1591                 memcpy(encap->msg, content, length);
1592                 return;
1593         }
1594 }
1595
1596
1597 /*
1598  * Determine whether the specified message exists in the cached_msglist
1599  * (This is a security check)
1600  */
1601 int check_cached_msglist(long msgnum) {
1602         struct CitContext *CCC = CC;
1603
1604         /* cases in which we skip the check */
1605         if (!CCC) return om_ok;                                         /* not a session */
1606         if (CCC->client_socket <= 0) return om_ok;                      /* not a client session */
1607         if (CCC->cached_msglist == NULL) return om_access_denied;       /* no msglist fetched */
1608         if (CCC->cached_num_msgs == 0) return om_access_denied;         /* nothing to check */
1609
1610
1611         /* Do a binary search within the cached_msglist for the requested msgnum */
1612         int min = 0;
1613         int max = (CC->cached_num_msgs - 1);
1614
1615         while (max >= min) {
1616                 int middle = min + (max-min) / 2 ;
1617                 if (msgnum == CCC->cached_msglist[middle]) {
1618                         return om_ok;
1619                 }
1620                 if (msgnum > CC->cached_msglist[middle]) {
1621                         min = middle + 1;
1622                 }
1623                 else {
1624                         max = middle - 1;
1625                 }
1626         }
1627
1628         return om_access_denied;
1629 }
1630
1631
1632 /*
1633  * Determine whether the currently logged in session has permission to read
1634  * messages in the current room.
1635  */
1636 int CtdlDoIHavePermissionToReadMessagesInThisRoom(void) {
1637         if (    (!(CC->logged_in))
1638                 && (!(CC->internal_pgm))
1639                 && (!config.c_guest_logins)
1640         ) {
1641                 return(om_not_logged_in);
1642         }
1643         return(om_ok);
1644 }
1645
1646
1647 /*
1648  * Get a message off disk.  (returns om_* values found in msgbase.h)
1649  *
1650  */
1651 int CtdlOutputMsg(long msg_num,         /* message number (local) to fetch */
1652                   int mode,             /* how would you like that message? */
1653                   int headers_only,     /* eschew the message body? */
1654                   int do_proto,         /* do Citadel protocol responses? */
1655                   int crlf,             /* Use CRLF newlines instead of LF? */
1656                   char *section,        /* NULL or a message/rfc822 section */
1657                   int flags             /* various flags; see msgbase.h */
1658 ) {
1659         struct CitContext *CCC = CC;
1660         struct CtdlMessage *TheMessage = NULL;
1661         int retcode = om_no_such_msg;
1662         struct encapmsg encap;
1663         int r;
1664
1665         MSG_syslog(LOG_DEBUG, "CtdlOutputMsg(msgnum=%ld, mode=%d, section=%s)\n",
1666                 msg_num, mode,
1667                 (section ? section : "<>")
1668         );
1669
1670         r = CtdlDoIHavePermissionToReadMessagesInThisRoom();
1671         if (r != om_ok) {
1672                 if (do_proto) {
1673                         if (r == om_not_logged_in) {
1674                                 cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN);
1675                         }
1676                         else {
1677                                 cprintf("%d An unknown error has occurred.\n", ERROR);
1678                         }
1679                 }
1680                 return(r);
1681         }
1682
1683         /*
1684          * Check to make sure the message is actually IN this room
1685          */
1686         r = check_cached_msglist(msg_num);
1687         if (r == om_access_denied) {
1688                 /* Not in the cache?  We get ONE shot to check it again. */
1689                 CtdlForEachMessage(MSGS_ALL, 0L, NULL, NULL, NULL, NULL, NULL);
1690                 r = check_cached_msglist(msg_num);
1691         }
1692         if (r != om_ok) {
1693                 MSG_syslog(LOG_DEBUG, "Security check fail: message %ld is not in %s\n",
1694                            msg_num, CCC->room.QRname
1695                 );
1696                 if (do_proto) {
1697                         if (r == om_access_denied) {
1698                                 cprintf("%d message %ld was not found in this room\n",
1699                                         ERROR + HIGHER_ACCESS_REQUIRED,
1700                                         msg_num
1701                                 );
1702                         }
1703                 }
1704                 return(r);
1705         }
1706
1707         /*
1708          * Fetch the message from disk.  If we're in HEADERS_FAST mode,
1709          * request that we don't even bother loading the body into memory.
1710          */
1711         if (headers_only == HEADERS_FAST) {
1712                 TheMessage = CtdlFetchMessage(msg_num, 0);
1713         }
1714         else {
1715                 TheMessage = CtdlFetchMessage(msg_num, 1);
1716         }
1717
1718         if (TheMessage == NULL) {
1719                 if (do_proto) cprintf("%d Can't locate msg %ld on disk\n",
1720                         ERROR + MESSAGE_NOT_FOUND, msg_num);
1721                 return(om_no_such_msg);
1722         }
1723
1724         /* Here is the weird form of this command, to process only an
1725          * encapsulated message/rfc822 section.
1726          */
1727         if (section) if (!IsEmptyStr(section)) if (strcmp(section, "0")) {
1728                 memset(&encap, 0, sizeof encap);
1729                 safestrncpy(encap.desired_section, section, sizeof encap.desired_section);
1730                 mime_parser(TheMessage->cm_fields['M'],
1731                         NULL,
1732                         *extract_encapsulated_message,
1733                         NULL, NULL, (void *)&encap, 0
1734                 );
1735                 CtdlFreeMessage(TheMessage);
1736                 TheMessage = NULL;
1737
1738                 if (encap.msg) {
1739                         encap.msg[encap.msglen] = 0;
1740                         TheMessage = convert_internet_message(encap.msg);
1741                         encap.msg = NULL;       /* no free() here, TheMessage owns it now */
1742
1743                         /* Now we let it fall through to the bottom of this
1744                          * function, because TheMessage now contains the
1745                          * encapsulated message instead of the top-level
1746                          * message.  Isn't that neat?
1747                          */
1748
1749                 }
1750                 else {
1751                         if (do_proto) cprintf("%d msg %ld has no part %s\n",
1752                                 ERROR + MESSAGE_NOT_FOUND, msg_num, section);
1753                         retcode = om_no_such_msg;
1754                 }
1755
1756         }
1757
1758         /* Ok, output the message now */
1759         retcode = CtdlOutputPreLoadedMsg(TheMessage, mode, headers_only, do_proto, crlf, flags);
1760         CtdlFreeMessage(TheMessage);
1761
1762         return(retcode);
1763 }
1764
1765
1766 char *qp_encode_email_addrs(char *source)
1767 {
1768         struct CitContext *CCC = CC;
1769         char *user, *node, *name;
1770         const char headerStr[] = "=?UTF-8?Q?";
1771         char *Encoded;
1772         char *EncodedName;
1773         char *nPtr;
1774         int need_to_encode = 0;
1775         long SourceLen;
1776         long EncodedMaxLen;
1777         long nColons = 0;
1778         long *AddrPtr;
1779         long *AddrUtf8;
1780         long nAddrPtrMax = 50;
1781         long nmax;
1782         int InQuotes = 0;
1783         int i, n;
1784
1785         if (source == NULL) return source;
1786         if (IsEmptyStr(source)) return source;
1787         cit_backtrace();
1788         MSG_syslog(LOG_DEBUG, "qp_encode_email_addrs: [%s]\n", source);
1789
1790         AddrPtr = malloc (sizeof (long) * nAddrPtrMax);
1791         AddrUtf8 = malloc (sizeof (long) * nAddrPtrMax);
1792         memset(AddrUtf8, 0, sizeof (long) * nAddrPtrMax);
1793         *AddrPtr = 0;
1794         i = 0;
1795         while (!IsEmptyStr (&source[i])) {
1796                 if (nColons >= nAddrPtrMax){
1797                         long *ptr;
1798
1799                         ptr = (long *) malloc(sizeof (long) * nAddrPtrMax * 2);
1800                         memcpy (ptr, AddrPtr, sizeof (long) * nAddrPtrMax);
1801                         free (AddrPtr), AddrPtr = ptr;
1802
1803                         ptr = (long *) malloc(sizeof (long) * nAddrPtrMax * 2);
1804                         memset(&ptr[nAddrPtrMax], 0,
1805                                sizeof (long) * nAddrPtrMax);
1806
1807                         memcpy (ptr, AddrUtf8, sizeof (long) * nAddrPtrMax);
1808                         free (AddrUtf8), AddrUtf8 = ptr;
1809                         nAddrPtrMax *= 2;
1810                 }
1811                 if (((unsigned char) source[i] < 32) ||
1812                     ((unsigned char) source[i] > 126)) {
1813                         need_to_encode = 1;
1814                         AddrUtf8[nColons] = 1;
1815                 }
1816                 if (source[i] == '"')
1817                         InQuotes = !InQuotes;
1818                 if (!InQuotes && source[i] == ',') {
1819                         AddrPtr[nColons] = i;
1820                         nColons++;
1821                 }
1822                 i++;
1823         }
1824         if (need_to_encode == 0) {
1825                 free(AddrPtr);
1826                 free(AddrUtf8);
1827                 return source;
1828         }
1829
1830         SourceLen = i;
1831         EncodedMaxLen = nColons * (sizeof(headerStr) + 3) + SourceLen * 3;
1832         Encoded = (char*) malloc (EncodedMaxLen);
1833
1834         for (i = 0; i < nColons; i++)
1835                 source[AddrPtr[i]++] = '\0';
1836         /* TODO: if libidn, this might get larger*/
1837         user = malloc(SourceLen + 1);
1838         node = malloc(SourceLen + 1);
1839         name = malloc(SourceLen + 1);
1840
1841         nPtr = Encoded;
1842         *nPtr = '\0';
1843         for (i = 0; i < nColons && nPtr != NULL; i++) {
1844                 nmax = EncodedMaxLen - (nPtr - Encoded);
1845                 if (AddrUtf8[i]) {
1846                         process_rfc822_addr(&source[AddrPtr[i]],
1847                                             user,
1848                                             node,
1849                                             name);
1850                         /* TODO: libIDN here ! */
1851                         if (IsEmptyStr(name)) {
1852                                 n = snprintf(nPtr, nmax,
1853                                              (i==0)?"%s@%s" : ",%s@%s",
1854                                              user, node);
1855                         }
1856                         else {
1857                                 EncodedName = rfc2047encode(name, strlen(name));
1858                                 n = snprintf(nPtr, nmax,
1859                                              (i==0)?"%s <%s@%s>" : ",%s <%s@%s>",
1860                                              EncodedName, user, node);
1861                                 free(EncodedName);
1862                         }
1863                 }
1864                 else {
1865                         n = snprintf(nPtr, nmax,
1866                                      (i==0)?"%s" : ",%s",
1867                                      &source[AddrPtr[i]]);
1868                 }
1869                 if (n > 0 )
1870                         nPtr += n;
1871                 else {
1872                         char *ptr, *nnPtr;
1873                         ptr = (char*) malloc(EncodedMaxLen * 2);
1874                         memcpy(ptr, Encoded, EncodedMaxLen);
1875                         nnPtr = ptr + (nPtr - Encoded), nPtr = nnPtr;
1876                         free(Encoded), Encoded = ptr;
1877                         EncodedMaxLen *= 2;
1878                         i--; /* do it once more with properly lengthened buffer */
1879                 }
1880         }
1881         for (i = 0; i < nColons; i++)
1882                 source[--AddrPtr[i]] = ',';
1883
1884         free(user);
1885         free(node);
1886         free(name);
1887         free(AddrUtf8);
1888         free(AddrPtr);
1889         return Encoded;
1890 }
1891
1892
1893 /* If the last item in a list of recipients was truncated to a partial address,
1894  * remove it completely in order to avoid choking libSieve
1895  */
1896 void sanitize_truncated_recipient(char *str)
1897 {
1898         if (!str) return;
1899         if (num_tokens(str, ',') < 2) return;
1900
1901         int len = strlen(str);
1902         if (len < 900) return;
1903         if (len > 998) str[998] = 0;
1904
1905         char *cptr = strrchr(str, ',');
1906         if (!cptr) return;
1907
1908         char *lptr = strchr(cptr, '<');
1909         char *rptr = strchr(cptr, '>');
1910
1911         if ( (lptr) && (rptr) && (rptr > lptr) ) return;
1912
1913         *cptr = 0;
1914 }
1915
1916
1917 void OutputCtdlMsgHeaders(
1918         struct CtdlMessage *TheMessage,
1919         int do_proto)           /* do Citadel protocol responses? */
1920 {
1921         char allkeys[30];
1922         int i, k, n;
1923         int suppress_f = 0;
1924         char buf[SIZ];
1925         char display_name[256];
1926
1927         /* begin header processing loop for Citadel message format */
1928         safestrncpy(display_name, "<unknown>", sizeof display_name);
1929         if (TheMessage->cm_fields['A']) {
1930                 strcpy(buf, TheMessage->cm_fields['A']);
1931                 if (TheMessage->cm_anon_type == MES_ANONONLY) {
1932                         safestrncpy(display_name, "****", sizeof display_name);
1933                 }
1934                 else if (TheMessage->cm_anon_type == MES_ANONOPT) {
1935                         safestrncpy(display_name, "anonymous", sizeof display_name);
1936                 }
1937                 else {
1938                         safestrncpy(display_name, buf, sizeof display_name);
1939                 }
1940                 if ((is_room_aide())
1941                     && ((TheMessage->cm_anon_type == MES_ANONONLY)
1942                         || (TheMessage->cm_anon_type == MES_ANONOPT))) {
1943                         size_t tmp = strlen(display_name);
1944                         snprintf(&display_name[tmp],
1945                                  sizeof display_name - tmp,
1946                                  " [%s]", buf);
1947                 }
1948         }
1949
1950         /* Don't show Internet address for users on the
1951          * local Citadel network.
1952          */
1953         suppress_f = 0;
1954         if (TheMessage->cm_fields['N'] != NULL)
1955                 if (!IsEmptyStr(TheMessage->cm_fields['N']))
1956                         if (haschar(TheMessage->cm_fields['N'], '.') == 0) {
1957                                 suppress_f = 1;
1958                         }
1959
1960         /* Now spew the header fields in the order we like them. */
1961         n = safestrncpy(allkeys, FORDER, sizeof allkeys);
1962         for (i=0; i<n; ++i) {
1963                 k = (int) allkeys[i];
1964                 if (k != 'M') {
1965                         if ( (TheMessage->cm_fields[k] != NULL)
1966                              && (msgkeys[k] != NULL) ) {
1967                                 if ((k == 'V') || (k == 'R') || (k == 'Y')) {
1968                                         sanitize_truncated_recipient(TheMessage->cm_fields[k]);
1969                                 }
1970                                 if (k == 'A') {
1971                                         if (do_proto) cprintf("%s=%s\n",
1972                                                               msgkeys[k],
1973                                                               display_name);
1974                                 }
1975                                 else if ((k == 'F') && (suppress_f)) {
1976                                         /* do nothing */
1977                                 }
1978                                 /* Masquerade display name if needed */
1979                                 else {
1980                                         if (do_proto) cprintf("%s=%s\n",
1981                                                               msgkeys[k],
1982                                                               TheMessage->cm_fields[k]
1983                                                 );
1984                                 }
1985                         }
1986                 }
1987         }
1988
1989 }
1990
1991 void OutputRFC822MsgHeaders(
1992         struct CtdlMessage *TheMessage,
1993         int flags,              /* should the bessage be exported clean */
1994         const char *nl,
1995         char *mid, long sizeof_mid,
1996         char *suser, long sizeof_suser,
1997         char *luser, long sizeof_luser,
1998         char *fuser, long sizeof_fuser,
1999         char *snode, long sizeof_snode)
2000 {
2001         char datestamp[100];
2002         int subject_found = 0;
2003         char buf[SIZ];
2004         int i, j, k;
2005         char *mptr = NULL;
2006         char *mpptr = NULL;
2007         char *hptr;
2008
2009         for (i = 0; i < 256; ++i) {
2010                 if (TheMessage->cm_fields[i]) {
2011                         mptr = mpptr = TheMessage->cm_fields[i];
2012
2013                         if (i == 'A') {
2014                                 safestrncpy(luser, mptr, sizeof_luser);
2015                                 safestrncpy(suser, mptr, sizeof_suser);
2016                         }
2017                         else if (i == 'Y') {
2018                                 if ((flags & QP_EADDR) != 0) {
2019                                         mptr = qp_encode_email_addrs(mptr);
2020                                 }
2021                                 sanitize_truncated_recipient(mptr);
2022                                 cprintf("CC: %s%s", mptr, nl);
2023                         }
2024                         else if (i == 'P') {
2025                                 cprintf("Return-Path: %s%s", mptr, nl);
2026                         }
2027                         else if (i == 'L') {
2028                                 cprintf("List-ID: %s%s", mptr, nl);
2029                         }
2030                         else if (i == 'V') {
2031                                 if ((flags & QP_EADDR) != 0)
2032                                         mptr = qp_encode_email_addrs(mptr);
2033                                 hptr = mptr;
2034                                 while ((*hptr != '\0') && isspace(*hptr))
2035                                         hptr ++;
2036                                 if (!IsEmptyStr(hptr))
2037                                         cprintf("Envelope-To: %s%s", hptr, nl);
2038                         }
2039                         else if (i == 'U') {
2040                                 cprintf("Subject: %s%s", mptr, nl);
2041                                 subject_found = 1;
2042                         }
2043                         else if (i == 'I')
2044                                 safestrncpy(mid, mptr, sizeof_mid); /// TODO: detect @ here and copy @nodename in if not found.
2045                         else if (i == 'F')
2046                                 safestrncpy(fuser, mptr, sizeof_fuser);
2047                         /* else if (i == 'O')
2048                            cprintf("X-Citadel-Room: %s%s",
2049                            mptr, nl); */
2050                         else if (i == 'N')
2051                                 safestrncpy(snode, mptr, sizeof_snode);
2052                         else if (i == 'R')
2053                         {
2054                                 if (haschar(mptr, '@') == 0)
2055                                 {
2056                                         sanitize_truncated_recipient(mptr);
2057                                         cprintf("To: %s@%s", mptr, config.c_fqdn);
2058                                         cprintf("%s", nl);
2059                                 }
2060                                 else
2061                                 {
2062                                         if ((flags & QP_EADDR) != 0) {
2063                                                 mptr = qp_encode_email_addrs(mptr);
2064                                         }
2065                                         sanitize_truncated_recipient(mptr);
2066                                         cprintf("To: %s", mptr);
2067                                         cprintf("%s", nl);
2068                                 }
2069                         }
2070                         else if (i == 'T') {
2071                                 datestring(datestamp, sizeof datestamp,
2072                                            atol(mptr), DATESTRING_RFC822);
2073                                 cprintf("Date: %s%s", datestamp, nl);
2074                         }
2075                         else if (i == 'W') {
2076                                 cprintf("References: ");
2077                                 k = num_tokens(mptr, '|');
2078                                 for (j=0; j<k; ++j) {
2079                                         extract_token(buf, mptr, j, '|', sizeof buf);
2080                                         cprintf("<%s>", buf);
2081                                         if (j == (k-1)) {
2082                                                 cprintf("%s", nl);
2083                                         }
2084                                         else {
2085                                                 cprintf(" ");
2086                                         }
2087                                 }
2088                         }
2089                         else if (i == 'K') {
2090                                 hptr = mptr;
2091                                 while ((*hptr != '\0') && isspace(*hptr))
2092                                         hptr ++;
2093                                 if (!IsEmptyStr(hptr))
2094                                         cprintf("Reply-To: %s%s", mptr, nl);
2095                         }
2096                         if (mptr != mpptr)
2097                                 free (mptr);
2098                 }
2099         }
2100         if (subject_found == 0) {
2101                 cprintf("Subject: (no subject)%s", nl);
2102         }
2103 }
2104
2105
2106 void Dump_RFC822HeadersBody(
2107         struct CtdlMessage *TheMessage,
2108         int headers_only,       /* eschew the message body? */
2109         int flags,              /* should the bessage be exported clean? */
2110
2111         const char *nl)
2112 {
2113         cit_uint8_t prev_ch;
2114         int eoh = 0;
2115         const char *StartOfText = StrBufNOTNULL;
2116         char outbuf[1024];
2117         int outlen = 0;
2118         int nllen = strlen(nl);
2119         char *mptr;
2120
2121         mptr = TheMessage->cm_fields['M'];
2122
2123
2124         prev_ch = '\0';
2125         while (*mptr != '\0') {
2126                 if (*mptr == '\r') {
2127                         /* do nothing */
2128                 }
2129                 else {
2130                         if ((!eoh) &&
2131                             (*mptr == '\n'))
2132                         {
2133                                 eoh = (*(mptr+1) == '\r') && (*(mptr+2) == '\n');
2134                                 if (!eoh)
2135                                         eoh = *(mptr+1) == '\n';
2136                                 if (eoh)
2137                                 {
2138                                         StartOfText = mptr;
2139                                         StartOfText = strchr(StartOfText, '\n');
2140                                         StartOfText = strchr(StartOfText, '\n');
2141                                 }
2142                         }
2143                         if (((headers_only == HEADERS_NONE) && (mptr >= StartOfText)) ||
2144                             ((headers_only == HEADERS_ONLY) && (mptr < StartOfText)) ||
2145                             ((headers_only != HEADERS_NONE) &&
2146                              (headers_only != HEADERS_ONLY))
2147                                 ) {
2148                                 if (*mptr == '\n') {
2149                                         memcpy(&outbuf[outlen], nl, nllen);
2150                                         outlen += nllen;
2151                                         outbuf[outlen] = '\0';
2152                                 }
2153                                 else {
2154                                         outbuf[outlen++] = *mptr;
2155                                 }
2156                         }
2157                 }
2158                 if (flags & ESC_DOT)
2159                 {
2160                         if ((prev_ch == '\n') &&
2161                             (*mptr == '.') &&
2162                             ((*(mptr+1) == '\r') || (*(mptr+1) == '\n')))
2163                         {
2164                                 outbuf[outlen++] = '.';
2165                         }
2166                         prev_ch = *mptr;
2167                 }
2168                 ++mptr;
2169                 if (outlen > 1000) {
2170                         if (client_write(outbuf, outlen) == -1)
2171                         {
2172                                 struct CitContext *CCC = CC;
2173                                 MSGM_syslog(LOG_ERR, "Dump_RFC822HeadersBody(): aborting due to write failure.\n");
2174                                 return;
2175                         }
2176                         outlen = 0;
2177                 }
2178         }
2179         if (outlen > 0) {
2180                 client_write(outbuf, outlen);
2181                 outlen = 0;
2182         }
2183 }
2184
2185
2186
2187 /* If the format type on disk is 1 (fixed-format), then we want
2188  * everything to be output completely literally ... regardless of
2189  * what message transfer format is in use.
2190  */
2191 void DumpFormatFixed(
2192         struct CtdlMessage *TheMessage,
2193         int mode,               /* how would you like that message? */
2194         const char *nl)
2195 {
2196         cit_uint8_t ch;
2197         char buf[SIZ];
2198         int buflen;
2199         int xlline = 0;
2200         int nllen = strlen (nl);
2201         char *mptr;
2202
2203         mptr = TheMessage->cm_fields['M'];
2204
2205         if (mode == MT_MIME) {
2206                 cprintf("Content-type: text/plain\n\n");
2207         }
2208         *buf = '\0';
2209         buflen = 0;
2210         while (ch = *mptr++, ch > 0) {
2211                 if (ch == '\n')
2212                         ch = '\r';
2213
2214                 if ((buflen > 250) && (!xlline)){
2215                         int tbuflen;
2216                         tbuflen = buflen;
2217
2218                         while ((buflen > 0) &&
2219                                (!isspace(buf[buflen])))
2220                                 buflen --;
2221                         if (buflen == 0) {
2222                                 xlline = 1;
2223                         }
2224                         else {
2225                                 mptr -= tbuflen - buflen;
2226                                 buf[buflen] = '\0';
2227                                 ch = '\r';
2228                         }
2229                 }
2230                 /* if we reach the outer bounds of our buffer,
2231                    abort without respect what whe purge. */
2232                 if (xlline &&
2233                     ((isspace(ch)) ||
2234                      (buflen > SIZ - nllen - 2)))
2235                         ch = '\r';
2236
2237                 if (ch == '\r') {
2238                         memcpy (&buf[buflen], nl, nllen);
2239                         buflen += nllen;
2240                         buf[buflen] = '\0';
2241
2242                         if (client_write(buf, buflen) == -1)
2243                         {
2244                                 struct CitContext *CCC = CC;
2245                                 MSGM_syslog(LOG_ERR, "DumpFormatFixed(): aborting due to write failure.\n");
2246                                 return;
2247                         }
2248                         *buf = '\0';
2249                         buflen = 0;
2250                         xlline = 0;
2251                 } else {
2252                         buf[buflen] = ch;
2253                         buflen++;
2254                 }
2255         }
2256         buf[buflen] = '\0';
2257         if (!IsEmptyStr(buf))
2258                 cprintf("%s%s", buf, nl);
2259 }
2260
2261 /*
2262  * Get a message off disk.  (returns om_* values found in msgbase.h)
2263  */
2264 int CtdlOutputPreLoadedMsg(
2265                 struct CtdlMessage *TheMessage,
2266                 int mode,               /* how would you like that message? */
2267                 int headers_only,       /* eschew the message body? */
2268                 int do_proto,           /* do Citadel protocol responses? */
2269                 int crlf,               /* Use CRLF newlines instead of LF? */
2270                 int flags               /* should the bessage be exported clean? */
2271 ) {
2272         struct CitContext *CCC = CC;
2273         int i;
2274         char *mptr = NULL;
2275         const char *nl; /* newline string */
2276         struct ma_info ma;
2277
2278         /* Buffers needed for RFC822 translation.  These are all filled
2279          * using functions that are bounds-checked, and therefore we can
2280          * make them substantially smaller than SIZ.
2281          */
2282         char suser[100];
2283         char luser[100];
2284         char fuser[100];
2285         char snode[100];
2286         char mid[100];
2287
2288         MSG_syslog(LOG_DEBUG, "CtdlOutputPreLoadedMsg(TheMessage=%s, %d, %d, %d, %d\n",
2289                    ((TheMessage == NULL) ? "NULL" : "not null"),
2290                    mode, headers_only, do_proto, crlf);
2291
2292         strcpy(mid, "unknown");
2293         nl = (crlf ? "\r\n" : "\n");
2294
2295         if (!is_valid_message(TheMessage)) {
2296                 MSGM_syslog(LOG_ERR,
2297                             "ERROR: invalid preloaded message for output\n");
2298                 cit_backtrace ();
2299                 return(om_no_such_msg);
2300         }
2301
2302         /* Suppress envelope recipients if required to avoid disclosing BCC addresses.
2303          * Pad it with spaces in order to avoid changing the RFC822 length of the message.
2304          */
2305         if ( (flags & SUPPRESS_ENV_TO) && (TheMessage->cm_fields['V'] != NULL) ) {
2306                 memset(TheMessage->cm_fields['V'], ' ', strlen(TheMessage->cm_fields['V']));
2307         }
2308
2309         /* Are we downloading a MIME component? */
2310         if (mode == MT_DOWNLOAD) {
2311                 if (TheMessage->cm_format_type != FMT_RFC822) {
2312                         if (do_proto)
2313                                 cprintf("%d This is not a MIME message.\n",
2314                                 ERROR + ILLEGAL_VALUE);
2315                 } else if (CCC->download_fp != NULL) {
2316                         if (do_proto) cprintf(
2317                                 "%d You already have a download open.\n",
2318                                 ERROR + RESOURCE_BUSY);
2319                 } else {
2320                         /* Parse the message text component */
2321                         mptr = TheMessage->cm_fields['M'];
2322                         mime_parser(mptr, NULL, *mime_download, NULL, NULL, NULL, 0);
2323                         /* If there's no file open by this time, the requested
2324                          * section wasn't found, so print an error
2325                          */
2326                         if (CCC->download_fp == NULL) {
2327                                 if (do_proto) cprintf(
2328                                         "%d Section %s not found.\n",
2329                                         ERROR + FILE_NOT_FOUND,
2330                                         CCC->download_desired_section);
2331                         }
2332                 }
2333                 return((CCC->download_fp != NULL) ? om_ok : om_mime_error);
2334         }
2335
2336         /* MT_SPEW_SECTION is like MT_DOWNLOAD except it outputs the whole MIME part
2337          * in a single server operation instead of opening a download file.
2338          */
2339         if (mode == MT_SPEW_SECTION) {
2340                 if (TheMessage->cm_format_type != FMT_RFC822) {
2341                         if (do_proto)
2342                                 cprintf("%d This is not a MIME message.\n",
2343                                 ERROR + ILLEGAL_VALUE);
2344                 } else {
2345                         /* Parse the message text component */
2346                         int found_it = 0;
2347
2348                         mptr = TheMessage->cm_fields['M'];
2349                         mime_parser(mptr, NULL, *mime_spew_section, NULL, NULL, (void *)&found_it, 0);
2350                         /* If section wasn't found, print an error
2351                          */
2352                         if (!found_it) {
2353                                 if (do_proto) cprintf(
2354                                         "%d Section %s not found.\n",
2355                                         ERROR + FILE_NOT_FOUND,
2356                                         CCC->download_desired_section);
2357                         }
2358                 }
2359                 return((CCC->download_fp != NULL) ? om_ok : om_mime_error);
2360         }
2361
2362         /* now for the user-mode message reading loops */
2363         if (do_proto) cprintf("%d msg:\n", LISTING_FOLLOWS);
2364
2365         /* Does the caller want to skip the headers? */
2366         if (headers_only == HEADERS_NONE) goto START_TEXT;
2367
2368         /* Tell the client which format type we're using. */
2369         if ( (mode == MT_CITADEL) && (do_proto) ) {
2370                 cprintf("type=%d\n", TheMessage->cm_format_type);
2371         }
2372
2373         /* nhdr=yes means that we're only displaying headers, no body */
2374         if ( (TheMessage->cm_anon_type == MES_ANONONLY)
2375            && ((mode == MT_CITADEL) || (mode == MT_MIME))
2376            && (do_proto)
2377            ) {
2378                 cprintf("nhdr=yes\n");
2379         }
2380
2381         if ((mode == MT_CITADEL) || (mode == MT_MIME))
2382                 OutputCtdlMsgHeaders(TheMessage, do_proto);
2383
2384
2385         /* begin header processing loop for RFC822 transfer format */
2386         strcpy(suser, "");
2387         strcpy(luser, "");
2388         strcpy(fuser, "");
2389         strcpy(snode, NODENAME);
2390         if (mode == MT_RFC822)
2391                 OutputRFC822MsgHeaders(
2392                         TheMessage,
2393                         flags,
2394                         nl,
2395                         mid, sizeof(mid),
2396                         suser, sizeof(suser),
2397                         luser, sizeof(luser),
2398                         fuser, sizeof(fuser),
2399                         snode, sizeof(snode)
2400                         );
2401
2402
2403         for (i=0; !IsEmptyStr(&suser[i]); ++i) {
2404                 suser[i] = tolower(suser[i]);
2405                 if (!isalnum(suser[i])) suser[i]='_';
2406         }
2407
2408         if (mode == MT_RFC822) {
2409                 if (!strcasecmp(snode, NODENAME)) {
2410                         safestrncpy(snode, FQDN, sizeof snode);
2411                 }
2412
2413                 /* Construct a fun message id */
2414                 cprintf("Message-ID: <%s", mid);/// todo: this possibly breaks threadding mails.
2415                 if (strchr(mid, '@')==NULL) {
2416                         cprintf("@%s", snode);
2417                 }
2418                 cprintf(">%s", nl);
2419
2420                 if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONONLY)) {
2421                         cprintf("From: \"----\" <x@x.org>%s", nl);
2422                 }
2423                 else if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONOPT)) {
2424                         cprintf("From: \"anonymous\" <x@x.org>%s", nl);
2425                 }
2426                 else if (!IsEmptyStr(fuser)) {
2427                         cprintf("From: \"%s\" <%s>%s", luser, fuser, nl);
2428                 }
2429                 else {
2430                         cprintf("From: \"%s\" <%s@%s>%s", luser, suser, snode, nl);
2431                 }
2432
2433                 /* Blank line signifying RFC822 end-of-headers */
2434                 if (TheMessage->cm_format_type != FMT_RFC822) {
2435                         cprintf("%s", nl);
2436                 }
2437         }
2438
2439         /* end header processing loop ... at this point, we're in the text */
2440 START_TEXT:
2441         if (headers_only == HEADERS_FAST) goto DONE;
2442
2443         /* Tell the client about the MIME parts in this message */
2444         if (TheMessage->cm_format_type == FMT_RFC822) {
2445                 if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
2446                         mptr = TheMessage->cm_fields['M'];
2447                         memset(&ma, 0, sizeof(struct ma_info));
2448                         mime_parser(mptr, NULL,
2449                                 (do_proto ? *list_this_part : NULL),
2450                                 (do_proto ? *list_this_pref : NULL),
2451                                 (do_proto ? *list_this_suff : NULL),
2452                                 (void *)&ma, 1);
2453                 }
2454                 else if (mode == MT_RFC822) {   /* unparsed RFC822 dump */
2455                         Dump_RFC822HeadersBody(
2456                                 TheMessage,
2457                                 headers_only,
2458                                 flags,
2459                                 nl);
2460                         goto DONE;
2461                 }
2462         }
2463
2464         if (headers_only == HEADERS_ONLY) {
2465                 goto DONE;
2466         }
2467
2468         /* signify start of msg text */
2469         if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
2470                 if (do_proto) cprintf("text\n");
2471         }
2472
2473         if (TheMessage->cm_format_type == FMT_FIXED)
2474                 DumpFormatFixed(
2475                         TheMessage,
2476                         mode,           /* how would you like that message? */
2477                         nl);
2478
2479         /* If the message on disk is format 0 (Citadel vari-format), we
2480          * output using the formatter at 80 columns.  This is the final output
2481          * form if the transfer format is RFC822, but if the transfer format
2482          * is Citadel proprietary, it'll still work, because the indentation
2483          * for new paragraphs is correct and the client will reformat the
2484          * message to the reader's screen width.
2485          */
2486         if (TheMessage->cm_format_type == FMT_CITADEL) {
2487                 mptr = TheMessage->cm_fields['M'];
2488
2489                 if (mode == MT_MIME) {
2490                         cprintf("Content-type: text/x-citadel-variformat\n\n");
2491                 }
2492                 memfmout(mptr, nl);
2493         }
2494
2495         /* If the message on disk is format 4 (MIME), we've gotta hand it
2496          * off to the MIME parser.  The client has already been told that
2497          * this message is format 1 (fixed format), so the callback function
2498          * we use will display those parts as-is.
2499          */
2500         if (TheMessage->cm_format_type == FMT_RFC822) {
2501                 memset(&ma, 0, sizeof(struct ma_info));
2502
2503                 if (mode == MT_MIME) {
2504                         ma.use_fo_hooks = 0;
2505                         strcpy(ma.chosen_part, "1");
2506                         ma.chosen_pref = 9999;
2507                         ma.dont_decode = CCC->msg4_dont_decode;
2508                         mime_parser(mptr, NULL,
2509                                 *choose_preferred, *fixed_output_pre,
2510                                 *fixed_output_post, (void *)&ma, 1);
2511                         mime_parser(mptr, NULL,
2512                                 *output_preferred, NULL, NULL, (void *)&ma, 1);
2513                 }
2514                 else {
2515                         ma.use_fo_hooks = 1;
2516                         mime_parser(mptr, NULL,
2517                                 *fixed_output, *fixed_output_pre,
2518                                 *fixed_output_post, (void *)&ma, 0);
2519                 }
2520
2521         }
2522
2523 DONE:   /* now we're done */
2524         if (do_proto) cprintf("000\n");
2525         return(om_ok);
2526 }
2527
2528
2529 /*
2530  * display a message (mode 0 - Citadel proprietary)
2531  */
2532 void cmd_msg0(char *cmdbuf)
2533 {
2534         long msgid;
2535         int headers_only = HEADERS_ALL;
2536
2537         msgid = extract_long(cmdbuf, 0);
2538         headers_only = extract_int(cmdbuf, 1);
2539
2540         CtdlOutputMsg(msgid, MT_CITADEL, headers_only, 1, 0, NULL, 0);
2541         return;
2542 }
2543
2544
2545 /*
2546  * display a message (mode 2 - RFC822)
2547  */
2548 void cmd_msg2(char *cmdbuf)
2549 {
2550         long msgid;
2551         int headers_only = HEADERS_ALL;
2552
2553         msgid = extract_long(cmdbuf, 0);
2554         headers_only = extract_int(cmdbuf, 1);
2555
2556         CtdlOutputMsg(msgid, MT_RFC822, headers_only, 1, 1, NULL, 0);
2557 }
2558
2559
2560
2561 /*
2562  * display a message (mode 3 - IGnet raw format - internal programs only)
2563  */
2564 void cmd_msg3(char *cmdbuf)
2565 {
2566         long msgnum;
2567         struct CtdlMessage *msg = NULL;
2568         struct ser_ret smr;
2569
2570         if (CC->internal_pgm == 0) {
2571                 cprintf("%d This command is for internal programs only.\n",
2572                         ERROR + HIGHER_ACCESS_REQUIRED);
2573                 return;
2574         }
2575
2576         msgnum = extract_long(cmdbuf, 0);
2577         msg = CtdlFetchMessage(msgnum, 1);
2578         if (msg == NULL) {
2579                 cprintf("%d Message %ld not found.\n",
2580                         ERROR + MESSAGE_NOT_FOUND, msgnum);
2581                 return;
2582         }
2583
2584         serialize_message(&smr, msg);
2585         CtdlFreeMessage(msg);
2586
2587         if (smr.len == 0) {
2588                 cprintf("%d Unable to serialize message\n",
2589                         ERROR + INTERNAL_ERROR);
2590                 return;
2591         }
2592
2593         cprintf("%d %ld\n", BINARY_FOLLOWS, (long)smr.len);
2594         client_write((char *)smr.ser, (int)smr.len);
2595         free(smr.ser);
2596 }
2597
2598
2599
2600 /*
2601  * Display a message using MIME content types
2602  */
2603 void cmd_msg4(char *cmdbuf)
2604 {
2605         long msgid;
2606         char section[64];
2607
2608         msgid = extract_long(cmdbuf, 0);
2609         extract_token(section, cmdbuf, 1, '|', sizeof section);
2610         CtdlOutputMsg(msgid, MT_MIME, 0, 1, 0, (section[0] ? section : NULL) , 0);
2611 }
2612
2613
2614
2615 /*
2616  * Client tells us its preferred message format(s)
2617  */
2618 void cmd_msgp(char *cmdbuf)
2619 {
2620         if (!strcasecmp(cmdbuf, "dont_decode")) {
2621                 CC->msg4_dont_decode = 1;
2622                 cprintf("%d MSG4 will not pre-decode messages.\n", CIT_OK);
2623         }
2624         else {
2625                 safestrncpy(CC->preferred_formats, cmdbuf, sizeof(CC->preferred_formats));
2626                 cprintf("%d Preferred MIME formats have been set.\n", CIT_OK);
2627         }
2628 }
2629
2630
2631 /*
2632  * Open a component of a MIME message as a download file
2633  */
2634 void cmd_opna(char *cmdbuf)
2635 {
2636         long msgid;
2637         char desired_section[128];
2638
2639         msgid = extract_long(cmdbuf, 0);
2640         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2641         safestrncpy(CC->download_desired_section, desired_section,
2642                 sizeof CC->download_desired_section);
2643         CtdlOutputMsg(msgid, MT_DOWNLOAD, 0, 1, 1, NULL, 0);
2644 }
2645
2646
2647 /*
2648  * Open a component of a MIME message and transmit it all at once
2649  */
2650 void cmd_dlat(char *cmdbuf)
2651 {
2652         long msgid;
2653         char desired_section[128];
2654
2655         msgid = extract_long(cmdbuf, 0);
2656         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2657         safestrncpy(CC->download_desired_section, desired_section,
2658                 sizeof CC->download_desired_section);
2659         CtdlOutputMsg(msgid, MT_SPEW_SECTION, 0, 1, 1, NULL, 0);
2660 }
2661
2662
2663 /*
2664  * Save one or more message pointers into a specified room
2665  * (Returns 0 for success, nonzero for failure)
2666  * roomname may be NULL to use the current room
2667  *
2668  * Note that the 'supplied_msg' field may be set to NULL, in which case
2669  * the message will be fetched from disk, by number, if we need to perform
2670  * replication checks.  This adds an additional database read, so if the
2671  * caller already has the message in memory then it should be supplied.  (Obviously
2672  * this mode of operation only works if we're saving a single message.)
2673  */
2674 int CtdlSaveMsgPointersInRoom(char *roomname, long newmsgidlist[], int num_newmsgs,
2675                         int do_repl_check, struct CtdlMessage *supplied_msg, int suppress_refcount_adj
2676 ) {
2677         struct CitContext *CCC = CC;
2678         int i, j, unique;
2679         char hold_rm[ROOMNAMELEN];
2680         struct cdbdata *cdbfr;
2681         int num_msgs;
2682         long *msglist;
2683         long highest_msg = 0L;
2684
2685         long msgid = 0;
2686         struct CtdlMessage *msg = NULL;
2687
2688         long *msgs_to_be_merged = NULL;
2689         int num_msgs_to_be_merged = 0;
2690
2691         MSG_syslog(LOG_DEBUG,
2692                    "CtdlSaveMsgPointersInRoom(room=%s, num_msgs=%d, repl=%d, suppress_rca=%d)\n",
2693                    roomname, num_newmsgs, do_repl_check, suppress_refcount_adj
2694         );
2695
2696         strcpy(hold_rm, CCC->room.QRname);
2697
2698         /* Sanity checks */
2699         if (newmsgidlist == NULL) return(ERROR + INTERNAL_ERROR);
2700         if (num_newmsgs < 1) return(ERROR + INTERNAL_ERROR);
2701         if (num_newmsgs > 1) supplied_msg = NULL;
2702
2703         /* Now the regular stuff */
2704         if (CtdlGetRoomLock(&CCC->room,
2705            ((roomname != NULL) ? roomname : CCC->room.QRname) )
2706            != 0) {
2707                 MSG_syslog(LOG_ERR, "No such room <%s>\n", roomname);
2708                 return(ERROR + ROOM_NOT_FOUND);
2709         }
2710
2711
2712         msgs_to_be_merged = malloc(sizeof(long) * num_newmsgs);
2713         num_msgs_to_be_merged = 0;
2714
2715
2716         cdbfr = cdb_fetch(CDB_MSGLISTS, &CCC->room.QRnumber, sizeof(long));
2717         if (cdbfr == NULL) {
2718                 msglist = NULL;
2719                 num_msgs = 0;
2720         } else {
2721                 msglist = (long *) cdbfr->ptr;
2722                 cdbfr->ptr = NULL;      /* CtdlSaveMsgPointerInRoom() now owns this memory */
2723                 num_msgs = cdbfr->len / sizeof(long);
2724                 cdb_free(cdbfr);
2725         }
2726
2727
2728         /* Create a list of msgid's which were supplied by the caller, but do
2729          * not already exist in the target room.  It is absolutely taboo to
2730          * have more than one reference to the same message in a room.
2731          */
2732         for (i=0; i<num_newmsgs; ++i) {
2733                 unique = 1;
2734                 if (num_msgs > 0) for (j=0; j<num_msgs; ++j) {
2735                         if (msglist[j] == newmsgidlist[i]) {
2736                                 unique = 0;
2737                         }
2738                 }
2739                 if (unique) {
2740                         msgs_to_be_merged[num_msgs_to_be_merged++] = newmsgidlist[i];
2741                 }
2742         }
2743
2744         MSG_syslog(LOG_DEBUG, "%d unique messages to be merged\n", num_msgs_to_be_merged);
2745
2746         /*
2747          * Now merge the new messages
2748          */
2749         msglist = realloc(msglist, (sizeof(long) * (num_msgs + num_msgs_to_be_merged)) );
2750         if (msglist == NULL) {
2751                 MSGM_syslog(LOG_ALERT, "ERROR: can't realloc message list!\n");
2752         }
2753         memcpy(&msglist[num_msgs], msgs_to_be_merged, (sizeof(long) * num_msgs_to_be_merged) );
2754         num_msgs += num_msgs_to_be_merged;
2755
2756         /* Sort the message list, so all the msgid's are in order */
2757         num_msgs = sort_msglist(msglist, num_msgs);
2758
2759         /* Determine the highest message number */
2760         highest_msg = msglist[num_msgs - 1];
2761
2762         /* Write it back to disk. */
2763         cdb_store(CDB_MSGLISTS, &CCC->room.QRnumber, (int)sizeof(long),
2764                   msglist, (int)(num_msgs * sizeof(long)));
2765
2766         /* Free up the memory we used. */
2767         free(msglist);
2768
2769         /* Update the highest-message pointer and unlock the room. */
2770         CCC->room.QRhighest = highest_msg;
2771         CtdlPutRoomLock(&CCC->room);
2772
2773         /* Perform replication checks if necessary */
2774         if ( (DoesThisRoomNeedEuidIndexing(&CCC->room)) && (do_repl_check) ) {
2775                 MSGM_syslog(LOG_DEBUG, "CtdlSaveMsgPointerInRoom() doing repl checks\n");
2776
2777                 for (i=0; i<num_msgs_to_be_merged; ++i) {
2778                         msgid = msgs_to_be_merged[i];
2779
2780                         if (supplied_msg != NULL) {
2781                                 msg = supplied_msg;
2782                         }
2783                         else {
2784                                 msg = CtdlFetchMessage(msgid, 0);
2785                         }
2786
2787                         if (msg != NULL) {
2788                                 ReplicationChecks(msg);
2789
2790                                 /* If the message has an Exclusive ID, index that... */
2791                                 if (msg->cm_fields['E'] != NULL) {
2792                                         index_message_by_euid(msg->cm_fields['E'], &CCC->room, msgid);
2793                                 }
2794
2795                                 /* Free up the memory we may have allocated */
2796                                 if (msg != supplied_msg) {
2797                                         CtdlFreeMessage(msg);
2798                                 }
2799                         }
2800
2801                 }
2802         }
2803
2804         else {
2805                 MSGM_syslog(LOG_DEBUG, "CtdlSaveMsgPointerInRoom() skips repl checks\n");
2806         }
2807
2808         /* Submit this room for processing by hooks */
2809         PerformRoomHooks(&CCC->room);
2810
2811         /* Go back to the room we were in before we wandered here... */
2812         CtdlGetRoom(&CCC->room, hold_rm);
2813
2814         /* Bump the reference count for all messages which were merged */
2815         if (!suppress_refcount_adj) {
2816                 AdjRefCountList(msgs_to_be_merged, num_msgs_to_be_merged, +1);
2817         }
2818
2819         /* Free up memory... */
2820         if (msgs_to_be_merged != NULL) {
2821                 free(msgs_to_be_merged);
2822         }
2823
2824         /* Return success. */
2825         return (0);
2826 }
2827
2828
2829 /*
2830  * This is the same as CtdlSaveMsgPointersInRoom() but it only accepts
2831  * a single message.
2832  */
2833 int CtdlSaveMsgPointerInRoom(char *roomname, long msgid,
2834                              int do_repl_check, struct CtdlMessage *supplied_msg)
2835 {
2836         return CtdlSaveMsgPointersInRoom(roomname, &msgid, 1, do_repl_check, supplied_msg, 0);
2837 }
2838
2839
2840
2841
2842 /*
2843  * Message base operation to save a new message to the message store
2844  * (returns new message number)
2845  *
2846  * This is the back end for CtdlSubmitMsg() and should not be directly
2847  * called by server-side modules.
2848  *
2849  */
2850 long send_message(struct CtdlMessage *msg) {
2851         struct CitContext *CCC = CC;
2852         long newmsgid;
2853         long retval;
2854         char msgidbuf[256];
2855         struct ser_ret smr;
2856         int is_bigmsg = 0;
2857         char *holdM = NULL;
2858
2859         /* Get a new message number */
2860         newmsgid = get_new_message_number();
2861         snprintf(msgidbuf, sizeof msgidbuf, "%08lX-%08lX@%s",
2862                  (long unsigned int) time(NULL),
2863                  (long unsigned int) newmsgid,
2864                  config.c_fqdn
2865                 );
2866
2867         /* Generate an ID if we don't have one already */
2868         if (msg->cm_fields['I']==NULL) {
2869                 msg->cm_fields['I'] = strdup(msgidbuf);
2870         }
2871
2872         /* If the message is big, set its body aside for storage elsewhere */
2873         if (msg->cm_fields['M'] != NULL) {
2874                 if (strlen(msg->cm_fields['M']) > BIGMSG) {
2875                         is_bigmsg = 1;
2876                         holdM = msg->cm_fields['M'];
2877                         msg->cm_fields['M'] = NULL;
2878                 }
2879         }
2880
2881         /* Serialize our data structure for storage in the database */
2882         serialize_message(&smr, msg);
2883
2884         if (is_bigmsg) {
2885                 msg->cm_fields['M'] = holdM;
2886         }
2887
2888         if (smr.len == 0) {
2889                 cprintf("%d Unable to serialize message\n",
2890                         ERROR + INTERNAL_ERROR);
2891                 return (-1L);
2892         }
2893
2894         /* Write our little bundle of joy into the message base */
2895         if (cdb_store(CDB_MSGMAIN, &newmsgid, (int)sizeof(long),
2896                       smr.ser, smr.len) < 0) {
2897                 MSGM_syslog(LOG_ERR, "Can't store message\n");
2898                 retval = 0L;
2899         } else {
2900                 if (is_bigmsg) {
2901                         cdb_store(CDB_BIGMSGS,
2902                                   &newmsgid,
2903                                   (int)sizeof(long),
2904                                   holdM,
2905                                   (strlen(holdM) + 1)
2906                                 );
2907                 }
2908                 retval = newmsgid;
2909         }
2910
2911         /* Free the memory we used for the serialized message */
2912         free(smr.ser);
2913
2914         /* Return the *local* message ID to the caller
2915          * (even if we're storing an incoming network message)
2916          */
2917         return(retval);
2918 }
2919
2920
2921
2922 /*
2923  * Serialize a struct CtdlMessage into the format used on disk and network.
2924  *
2925  * This function loads up a "struct ser_ret" (defined in server.h) which
2926  * contains the length of the serialized message and a pointer to the
2927  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
2928  */
2929 void serialize_message(struct ser_ret *ret,             /* return values */
2930                        struct CtdlMessage *msg) /* unserialized msg */
2931 {
2932         struct CitContext *CCC = CC;
2933         size_t wlen, fieldlen;
2934         int i;
2935         static char *forder = FORDER;
2936
2937         /*
2938          * Check for valid message format
2939          */
2940         if (is_valid_message(msg) == 0) {
2941                 MSGM_syslog(LOG_ERR, "serialize_message() aborting due to invalid message\n");
2942                 ret->len = 0;
2943                 ret->ser = NULL;
2944                 return;
2945         }
2946
2947         ret->len = 3;
2948         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL)
2949                                      ret->len = ret->len +
2950                                              strlen(msg->cm_fields[(int)forder[i]]) + 2;
2951
2952         ret->ser = malloc(ret->len);
2953         if (ret->ser == NULL) {
2954                 MSG_syslog(LOG_ERR, "serialize_message() malloc(%ld) failed: %s\n",
2955                            (long)ret->len, strerror(errno));
2956                 ret->len = 0;
2957                 ret->ser = NULL;
2958                 return;
2959         }
2960
2961         ret->ser[0] = 0xFF;
2962         ret->ser[1] = msg->cm_anon_type;
2963         ret->ser[2] = msg->cm_format_type;
2964         wlen = 3;
2965
2966         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
2967                         fieldlen = strlen(msg->cm_fields[(int)forder[i]]);
2968                         ret->ser[wlen++] = (char)forder[i];
2969                         safestrncpy((char *)&ret->ser[wlen], msg->cm_fields[(int)forder[i]], fieldlen+1);
2970                         wlen = wlen + fieldlen + 1;
2971                 }
2972         if (ret->len != wlen) {
2973                 MSG_syslog(LOG_ERR, "ERROR: len=%ld wlen=%ld\n",
2974                            (long)ret->len, (long)wlen);
2975         }
2976
2977         return;
2978 }
2979
2980
2981 /*
2982  * Serialize a struct CtdlMessage into the format used on disk and network.
2983  *
2984  * This function loads up a "struct ser_ret" (defined in server.h) which
2985  * contains the length of the serialized message and a pointer to the
2986  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
2987  */
2988 void dump_message(struct CtdlMessage *msg,      /* unserialized msg */
2989                   long Siz)                     /* how many chars ? */
2990 {
2991         int i;
2992         static char *forder = FORDER;
2993         char *buf;
2994
2995         /*
2996          * Check for valid message format
2997          */
2998         if (is_valid_message(msg) == 0) {
2999                 struct CitContext *CCC = CC;
3000                 MSGM_syslog(LOG_ERR, "dump_message() aborting due to invalid message\n");
3001                 return;
3002         }
3003
3004         buf = (char*) malloc (Siz + 1);
3005
3006         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
3007                         snprintf (buf, Siz, " msg[%c] = %s ...\n", (char) forder[i],
3008                                    msg->cm_fields[(int)forder[i]]);
3009                         if (client_write (buf, strlen(buf)) == -1)
3010                         {
3011                                 struct CitContext *CCC = CC;
3012                                 MSGM_syslog(LOG_ERR, "dump_message(): aborting due to write failure.\n");
3013                                 return;
3014                         }
3015                 }
3016
3017         return;
3018 }
3019
3020
3021
3022 /*
3023  * Check to see if any messages already exist in the current room which
3024  * carry the same Exclusive ID as this one.  If any are found, delete them.
3025  */
3026 void ReplicationChecks(struct CtdlMessage *msg) {
3027         struct CitContext *CCC = CC;
3028         long old_msgnum = (-1L);
3029
3030         if (DoesThisRoomNeedEuidIndexing(&CCC->room) == 0) return;
3031
3032         MSG_syslog(LOG_DEBUG, "Performing replication checks in <%s>\n",
3033                    CCC->room.QRname);
3034
3035         /* No exclusive id?  Don't do anything. */
3036         if (msg == NULL) return;
3037         if (msg->cm_fields['E'] == NULL) return;
3038         if (IsEmptyStr(msg->cm_fields['E'])) return;
3039         /*MSG_syslog(LOG_DEBUG, "Exclusive ID: <%s> for room <%s>\n",
3040           msg->cm_fields['E'], CCC->room.QRname);*/
3041
3042         old_msgnum = CtdlLocateMessageByEuid(msg->cm_fields['E'], &CCC->room);
3043         if (old_msgnum > 0L) {
3044                 MSG_syslog(LOG_DEBUG, "ReplicationChecks() replacing message %ld\n", old_msgnum);
3045                 CtdlDeleteMessages(CCC->room.QRname, &old_msgnum, 1, "");
3046         }
3047 }
3048
3049
3050
3051 /*
3052  * Save a message to disk and submit it into the delivery system.
3053  */
3054 long CtdlSubmitMsg(struct CtdlMessage *msg,     /* message to save */
3055                    struct recptypes *recps,     /* recipients (if mail) */
3056                    const char *force,           /* force a particular room? */
3057                    int flags                    /* should the message be exported clean? */
3058         )
3059 {
3060         char submit_filename[128];
3061         char generated_timestamp[32];
3062         char hold_rm[ROOMNAMELEN];
3063         char actual_rm[ROOMNAMELEN];
3064         char force_room[ROOMNAMELEN];
3065         char content_type[SIZ];                 /* We have to learn this */
3066         char recipient[SIZ];
3067         const char *room;
3068         long newmsgid;
3069         const char *mptr = NULL;
3070         struct ctdluser userbuf;
3071         int a, i;
3072         struct MetaData smi;
3073         FILE *network_fp = NULL;
3074         static int seqnum = 1;
3075         struct CtdlMessage *imsg = NULL;
3076         char *instr = NULL;
3077         size_t instr_alloc = 0;
3078         struct ser_ret smr;
3079         char *hold_R, *hold_D;
3080         char *collected_addresses = NULL;
3081         struct addresses_to_be_filed *aptr = NULL;
3082         StrBuf *saved_rfc822_version = NULL;
3083         int qualified_for_journaling = 0;
3084         CitContext *CCC = MyContext();
3085         char bounce_to[1024] = "";
3086         int rv = 0;
3087
3088         MSGM_syslog(LOG_DEBUG, "CtdlSubmitMsg() called\n");
3089         if (is_valid_message(msg) == 0) return(-1);     /* self check */
3090
3091         /* If this message has no timestamp, we take the liberty of
3092          * giving it one, right now.
3093          */
3094         if (msg->cm_fields['T'] == NULL) {
3095                 snprintf(generated_timestamp, sizeof generated_timestamp, "%ld", (long)time(NULL));
3096                 msg->cm_fields['T'] = strdup(generated_timestamp);
3097         }
3098
3099         /* If this message has no path, we generate one.
3100          */
3101         if (msg->cm_fields['P'] == NULL) {
3102                 if (msg->cm_fields['A'] != NULL) {
3103                         msg->cm_fields['P'] = strdup(msg->cm_fields['A']);
3104                         for (a=0; !IsEmptyStr(&msg->cm_fields['P'][a]); ++a) {
3105                                 if (isspace(msg->cm_fields['P'][a])) {
3106                                         msg->cm_fields['P'][a] = ' ';
3107                                 }
3108                         }
3109                 }
3110                 else {
3111                         msg->cm_fields['P'] = strdup("unknown");
3112                 }
3113         }
3114
3115         if (force == NULL) {
3116                 strcpy(force_room, "");
3117         }
3118         else {
3119                 strcpy(force_room, force);
3120         }
3121
3122         /* Learn about what's inside, because it's what's inside that counts */
3123         if (msg->cm_fields['M'] == NULL) {
3124                 MSGM_syslog(LOG_ERR, "ERROR: attempt to save message with NULL body\n");
3125                 return(-2);
3126         }
3127
3128         switch (msg->cm_format_type) {
3129         case 0:
3130                 strcpy(content_type, "text/x-citadel-variformat");
3131                 break;
3132         case 1:
3133                 strcpy(content_type, "text/plain");
3134                 break;
3135         case 4:
3136                 strcpy(content_type, "text/plain");
3137                 mptr = bmstrcasestr(msg->cm_fields['M'], "Content-type:");
3138                 if (mptr != NULL) {
3139                         char *aptr;
3140                         safestrncpy(content_type, &mptr[13], sizeof content_type);
3141                         striplt(content_type);
3142                         aptr = content_type;
3143                         while (!IsEmptyStr(aptr)) {
3144                                 if ((*aptr == ';')
3145                                     || (*aptr == ' ')
3146                                     || (*aptr == 13)
3147                                     || (*aptr == 10)) {
3148                                         *aptr = 0;
3149                                 }
3150                                 else aptr++;
3151                         }
3152                 }
3153         }
3154
3155         /* Goto the correct room */
3156         room = (recps) ? CCC->room.QRname : SENTITEMS;
3157         MSG_syslog(LOG_DEBUG, "Selected room %s\n", room);
3158         strcpy(hold_rm, CCC->room.QRname);
3159         strcpy(actual_rm, CCC->room.QRname);
3160         if (recps != NULL) {
3161                 strcpy(actual_rm, SENTITEMS);
3162         }
3163
3164         /* If the user is a twit, move to the twit room for posting */
3165         if (TWITDETECT) {
3166                 if (CCC->user.axlevel == AxProbU) {
3167                         strcpy(hold_rm, actual_rm);
3168                         strcpy(actual_rm, config.c_twitroom);
3169                         MSGM_syslog(LOG_DEBUG, "Diverting to twit room\n");
3170                 }
3171         }
3172
3173         /* ...or if this message is destined for Aide> then go there. */
3174         if (!IsEmptyStr(force_room)) {
3175                 strcpy(actual_rm, force_room);
3176         }
3177
3178         MSG_syslog(LOG_INFO, "Final selection: %s (%s)\n", actual_rm, room);
3179         if (strcasecmp(actual_rm, CCC->room.QRname)) {
3180                 /* CtdlGetRoom(&CCC->room, actual_rm); */
3181                 CtdlUserGoto(actual_rm, 0, 1, NULL, NULL);
3182         }
3183
3184         /*
3185          * If this message has no O (room) field, generate one.
3186          */
3187         if (msg->cm_fields['O'] == NULL) {
3188                 msg->cm_fields['O'] = strdup(CCC->room.QRname);
3189         }
3190
3191         /* Perform "before save" hooks (aborting if any return nonzero) */
3192         MSGM_syslog(LOG_DEBUG, "Performing before-save hooks\n");
3193         if (PerformMessageHooks(msg, EVT_BEFORESAVE) > 0) return(-3);
3194
3195         /*
3196          * If this message has an Exclusive ID, and the room is replication
3197          * checking enabled, then do replication checks.
3198          */
3199         if (DoesThisRoomNeedEuidIndexing(&CCC->room)) {
3200                 ReplicationChecks(msg);
3201         }
3202
3203         /* Save it to disk */
3204         MSGM_syslog(LOG_DEBUG, "Saving to disk\n");
3205         newmsgid = send_message(msg);
3206         if (newmsgid <= 0L) return(-5);
3207
3208         /* Write a supplemental message info record.  This doesn't have to
3209          * be a critical section because nobody else knows about this message
3210          * yet.
3211          */
3212         MSGM_syslog(LOG_DEBUG, "Creating MetaData record\n");
3213         memset(&smi, 0, sizeof(struct MetaData));
3214         smi.meta_msgnum = newmsgid;
3215         smi.meta_refcount = 0;
3216         safestrncpy(smi.meta_content_type, content_type,
3217                     sizeof smi.meta_content_type);
3218
3219         /*
3220          * Measure how big this message will be when rendered as RFC822.
3221          * We do this for two reasons:
3222          * 1. We need the RFC822 length for the new metadata record, so the
3223          *    POP and IMAP services don't have to calculate message lengths
3224          *    while the user is waiting (multiplied by potentially hundreds
3225          *    or thousands of messages).
3226          * 2. If journaling is enabled, we will need an RFC822 version of the
3227          *    message to attach to the journalized copy.
3228          */
3229         if (CCC->redirect_buffer != NULL) {
3230                 MSGM_syslog(LOG_ALERT, "CCC->redirect_buffer is not NULL during message submission!\n");
3231                 abort();
3232         }
3233         CCC->redirect_buffer = NewStrBufPlain(NULL, SIZ);
3234         CtdlOutputPreLoadedMsg(msg, MT_RFC822, HEADERS_ALL, 0, 1, QP_EADDR);
3235         smi.meta_rfc822_length = StrLength(CCC->redirect_buffer);
3236         saved_rfc822_version = CCC->redirect_buffer;
3237         CCC->redirect_buffer = NULL;
3238
3239         PutMetaData(&smi);
3240
3241         /* Now figure out where to store the pointers */
3242         MSGM_syslog(LOG_DEBUG, "Storing pointers\n");
3243
3244         /* If this is being done by the networker delivering a private
3245          * message, we want to BYPASS saving the sender's copy (because there
3246          * is no local sender; it would otherwise go to the Trashcan).
3247          */
3248         if ((!CCC->internal_pgm) || (recps == NULL)) {
3249                 if (CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 1, msg) != 0) {
3250                         MSGM_syslog(LOG_ERR, "ERROR saving message pointer!\n");
3251                         CtdlSaveMsgPointerInRoom(config.c_aideroom, newmsgid, 0, msg);
3252                 }
3253         }
3254
3255         /* For internet mail, drop a copy in the outbound queue room */
3256         if ((recps != NULL) && (recps->num_internet > 0)) {
3257                 CtdlSaveMsgPointerInRoom(SMTP_SPOOLOUT_ROOM, newmsgid, 0, msg);
3258         }
3259
3260         /* If other rooms are specified, drop them there too. */
3261         if ((recps != NULL) && (recps->num_room > 0))
3262                 for (i=0; i<num_tokens(recps->recp_room, '|'); ++i) {
3263                         extract_token(recipient, recps->recp_room, i,
3264                                       '|', sizeof recipient);
3265                         MSG_syslog(LOG_DEBUG, "Delivering to room <%s>\n", recipient);///// xxxx
3266                         CtdlSaveMsgPointerInRoom(recipient, newmsgid, 0, msg);
3267                 }
3268
3269         /* Bump this user's messages posted counter. */
3270         MSGM_syslog(LOG_DEBUG, "Updating user\n");
3271         CtdlGetUserLock(&CCC->user, CCC->curr_user);
3272         CCC->user.posted = CCC->user.posted + 1;
3273         CtdlPutUserLock(&CCC->user);
3274
3275         /* Decide where bounces need to be delivered */
3276         if ((recps != NULL) && (recps->bounce_to != NULL)) {
3277                 safestrncpy(bounce_to, recps->bounce_to, sizeof bounce_to);
3278         }
3279         else if (CCC->logged_in) {
3280                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", CCC->user.fullname, config.c_nodename);
3281         }
3282         else {
3283                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", msg->cm_fields['A'], msg->cm_fields['N']);
3284         }
3285
3286         /* If this is private, local mail, make a copy in the
3287          * recipient's mailbox and bump the reference count.
3288          */
3289         if ((recps != NULL) && (recps->num_local > 0))
3290                 for (i=0; i<num_tokens(recps->recp_local, '|'); ++i) {
3291                         extract_token(recipient, recps->recp_local, i,
3292                                       '|', sizeof recipient);
3293                         MSG_syslog(LOG_DEBUG, "Delivering private local mail to <%s>\n",
3294                                recipient);
3295                         if (CtdlGetUser(&userbuf, recipient) == 0) {
3296                                 CtdlMailboxName(actual_rm, sizeof actual_rm, &userbuf, MAILROOM);
3297                                 CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 0, msg);
3298                                 CtdlBumpNewMailCounter(userbuf.usernum);
3299                                 if (!IsEmptyStr(config.c_funambol_host) || !IsEmptyStr(config.c_pager_program)) {
3300                                         /* Generate a instruction message for the Funambol notification
3301                                          * server, in the same style as the SMTP queue
3302                                          */
3303                                         instr_alloc = 1024;
3304                                         instr = malloc(instr_alloc);
3305                                         snprintf(instr, instr_alloc,
3306                                                  "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
3307                                                  "bounceto|%s\n",
3308                                                  SPOOLMIME, newmsgid, (long)time(NULL),
3309                                                  bounce_to
3310                                                 );
3311
3312                                         imsg = malloc(sizeof(struct CtdlMessage));
3313                                         memset(imsg, 0, sizeof(struct CtdlMessage));
3314                                         imsg->cm_magic = CTDLMESSAGE_MAGIC;
3315                                         imsg->cm_anon_type = MES_NORMAL;
3316                                         imsg->cm_format_type = FMT_RFC822;
3317                                         imsg->cm_fields['U'] = strdup("QMSG");
3318                                         imsg->cm_fields['A'] = strdup("Citadel");
3319                                         imsg->cm_fields['J'] = strdup("do not journal");
3320                                         imsg->cm_fields['M'] = instr;   /* imsg owns this memory now */
3321                                         imsg->cm_fields['2'] = strdup(recipient);
3322                                         CtdlSubmitMsg(imsg, NULL, FNBL_QUEUE_ROOM, 0);
3323                                         CtdlFreeMessage(imsg);
3324                                 }
3325                         }
3326                         else {
3327                                 MSG_syslog(LOG_DEBUG, "No user <%s>\n", recipient);
3328                                 CtdlSaveMsgPointerInRoom(config.c_aideroom, newmsgid, 0, msg);
3329                         }
3330                 }
3331
3332         /* Perform "after save" hooks */
3333         MSGM_syslog(LOG_DEBUG, "Performing after-save hooks\n");
3334         if (msg->cm_fields['3'] != NULL) free(msg->cm_fields['3']);
3335         msg->cm_fields['3'] = malloc(20);
3336         snprintf(msg->cm_fields['3'], 20, "%ld", newmsgid);
3337         PerformMessageHooks(msg, EVT_AFTERSAVE);
3338         free(msg->cm_fields['3']);
3339         msg->cm_fields['3'] = NULL;
3340
3341         /* For IGnet mail, we have to save a new copy into the spooler for
3342          * each recipient, with the R and D fields set to the recipient and
3343          * destination-node.  This has two ugly side effects: all other
3344          * recipients end up being unlisted in this recipient's copy of the
3345          * message, and it has to deliver multiple messages to the same
3346          * node.  We'll revisit this again in a year or so when everyone has
3347          * a network spool receiver that can handle the new style messages.
3348          */
3349         if ((recps != NULL) && (recps->num_ignet > 0))
3350                 for (i=0; i<num_tokens(recps->recp_ignet, '|'); ++i) {
3351                         extract_token(recipient, recps->recp_ignet, i,
3352                                       '|', sizeof recipient);
3353
3354                         hold_R = msg->cm_fields['R'];
3355                         hold_D = msg->cm_fields['D'];
3356                         msg->cm_fields['R'] = malloc(SIZ);
3357                         msg->cm_fields['D'] = malloc(128);
3358                         extract_token(msg->cm_fields['R'], recipient, 0, '@', SIZ);
3359                         extract_token(msg->cm_fields['D'], recipient, 1, '@', 128);
3360
3361                         serialize_message(&smr, msg);
3362                         if (smr.len > 0) {
3363                                 snprintf(submit_filename, sizeof submit_filename,
3364                                          "%s/netmail.%04lx.%04x.%04x",
3365                                          ctdl_netin_dir,
3366                                          (long) getpid(), CCC->cs_pid, ++seqnum);
3367                                 network_fp = fopen(submit_filename, "wb+");
3368                                 if (network_fp != NULL) {
3369                                         rv = fwrite(smr.ser, smr.len, 1, network_fp);
3370                                         if (rv == -1) {
3371                                                 MSG_syslog(LOG_EMERG, "CtdlSubmitMsg(): Couldn't write network spool file: %s\n",
3372                                                            strerror(errno));
3373                                         }
3374                                         fclose(network_fp);
3375                                 }
3376                                 free(smr.ser);
3377                         }
3378
3379                         free(msg->cm_fields['R']);
3380                         free(msg->cm_fields['D']);
3381                         msg->cm_fields['R'] = hold_R;
3382                         msg->cm_fields['D'] = hold_D;
3383                 }
3384
3385         /* Go back to the room we started from */
3386         MSG_syslog(LOG_DEBUG, "Returning to original room %s\n", hold_rm);
3387         if (strcasecmp(hold_rm, CCC->room.QRname))
3388                 CtdlUserGoto(hold_rm, 0, 1, NULL, NULL);
3389
3390         /* For internet mail, generate delivery instructions.
3391          * Yes, this is recursive.  Deal with it.  Infinite recursion does
3392          * not happen because the delivery instructions message does not
3393          * contain a recipient.
3394          */
3395         if ((recps != NULL) && (recps->num_internet > 0)) {
3396                 StrBuf *SpoolMsg = NewStrBuf();
3397                 long nTokens;
3398
3399                 MSGM_syslog(LOG_DEBUG, "Generating delivery instructions\n");
3400
3401                 StrBufPrintf(SpoolMsg,
3402                              "Content-type: "SPOOLMIME"\n"
3403                              "\n"
3404                              "msgid|%ld\n"
3405                              "submitted|%ld\n"
3406                              "bounceto|%s\n",
3407                              newmsgid,
3408                              (long)time(NULL),
3409                              bounce_to);
3410
3411                 if (recps->envelope_from != NULL) {
3412                         StrBufAppendBufPlain(SpoolMsg, HKEY("envelope_from|"), 0);
3413                         StrBufAppendBufPlain(SpoolMsg, recps->envelope_from, -1, 0);
3414                         StrBufAppendBufPlain(SpoolMsg, HKEY("\n"), 0);
3415                 }
3416                 if (recps->sending_room != NULL) {
3417                         StrBufAppendBufPlain(SpoolMsg, HKEY("source_room|"), 0);
3418                         StrBufAppendBufPlain(SpoolMsg, recps->sending_room, -1, 0);
3419                         StrBufAppendBufPlain(SpoolMsg, HKEY("\n"), 0);
3420                 }
3421
3422                 nTokens = num_tokens(recps->recp_internet, '|');
3423                 for (i = 0; i < nTokens; i++) {
3424                         long len;
3425                         len = extract_token(recipient, recps->recp_internet, i, '|', sizeof recipient);
3426                         if (len > 0) {
3427                                 StrBufAppendBufPlain(SpoolMsg, HKEY("remote|"), 0);
3428                                 StrBufAppendBufPlain(SpoolMsg, recipient, len, 0);
3429                                 StrBufAppendBufPlain(SpoolMsg, HKEY("|0||\n"), 0);
3430                         }
3431                 }
3432
3433                 imsg = malloc(sizeof(struct CtdlMessage));
3434                 memset(imsg, 0, sizeof(struct CtdlMessage));
3435                 imsg->cm_magic = CTDLMESSAGE_MAGIC;
3436                 imsg->cm_anon_type = MES_NORMAL;
3437                 imsg->cm_format_type = FMT_RFC822;
3438                 imsg->cm_fields['U'] = strdup("QMSG");
3439                 imsg->cm_fields['A'] = strdup("Citadel");
3440                 imsg->cm_fields['J'] = strdup("do not journal");
3441                 imsg->cm_fields['M'] = SmashStrBuf(&SpoolMsg);  /* imsg owns this memory now */
3442                 CtdlSubmitMsg(imsg, NULL, SMTP_SPOOLOUT_ROOM, QP_EADDR);
3443                 CtdlFreeMessage(imsg);
3444         }
3445
3446         /*
3447          * Any addresses to harvest for someone's address book?
3448          */
3449         if ( (CCC->logged_in) && (recps != NULL) ) {
3450                 collected_addresses = harvest_collected_addresses(msg);
3451         }
3452
3453         if (collected_addresses != NULL) {
3454                 aptr = (struct addresses_to_be_filed *)
3455                         malloc(sizeof(struct addresses_to_be_filed));
3456                 CtdlMailboxName(actual_rm, sizeof actual_rm,
3457                                 &CCC->user, USERCONTACTSROOM);
3458                 aptr->roomname = strdup(actual_rm);
3459                 aptr->collected_addresses = collected_addresses;
3460                 begin_critical_section(S_ATBF);
3461                 aptr->next = atbf;
3462                 atbf = aptr;
3463                 end_critical_section(S_ATBF);
3464         }
3465
3466         /*
3467          * Determine whether this message qualifies for journaling.
3468          */
3469         if (msg->cm_fields['J'] != NULL) {
3470                 qualified_for_journaling = 0;
3471         }
3472         else {
3473                 if (recps == NULL) {
3474                         qualified_for_journaling = config.c_journal_pubmsgs;
3475                 }
3476                 else if (recps->num_local + recps->num_ignet + recps->num_internet > 0) {
3477                         qualified_for_journaling = config.c_journal_email;
3478                 }
3479                 else {
3480                         qualified_for_journaling = config.c_journal_pubmsgs;
3481                 }
3482         }
3483
3484         /*
3485          * Do we have to perform journaling?  If so, hand off the saved
3486          * RFC822 version will be handed off to the journaler for background
3487          * submit.  Otherwise, we have to free the memory ourselves.
3488          */
3489         if (saved_rfc822_version != NULL) {
3490                 if (qualified_for_journaling) {
3491                         JournalBackgroundSubmit(msg, saved_rfc822_version, recps);
3492                 }
3493                 else {
3494                         FreeStrBuf(&saved_rfc822_version);
3495                 }
3496         }
3497
3498         /* Done. */
3499         return(newmsgid);
3500 }
3501
3502
3503
3504 void aide_message (char *text, char *subject)
3505 {
3506         quickie_message("Citadel",NULL,NULL,AIDEROOM,text,FMT_CITADEL,subject);
3507 }
3508
3509
3510 /*
3511  * Convenience function for generating small administrative messages.
3512  */
3513 void quickie_message(const char *from, const char *fromaddr, char *to, char *room, const char *text,
3514                      int format_type, const char *subject)
3515 {
3516         struct CtdlMessage *msg;
3517         struct recptypes *recp = NULL;
3518
3519         msg = malloc(sizeof(struct CtdlMessage));
3520         memset(msg, 0, sizeof(struct CtdlMessage));
3521         msg->cm_magic = CTDLMESSAGE_MAGIC;
3522         msg->cm_anon_type = MES_NORMAL;
3523         msg->cm_format_type = format_type;
3524
3525         if (from != NULL) {
3526                 msg->cm_fields['A'] = strdup(from);
3527         }
3528         else if (fromaddr != NULL) {
3529                 msg->cm_fields['A'] = strdup(fromaddr);
3530                 if (strchr(msg->cm_fields['A'], '@')) {
3531                         *strchr(msg->cm_fields['A'], '@') = 0;
3532                 }
3533         }
3534         else {
3535                 msg->cm_fields['A'] = strdup("Citadel");
3536         }
3537
3538         if (fromaddr != NULL) msg->cm_fields['F'] = strdup(fromaddr);
3539         if (room != NULL) msg->cm_fields['O'] = strdup(room);
3540         msg->cm_fields['N'] = strdup(NODENAME);
3541         if (to != NULL) {
3542                 msg->cm_fields['R'] = strdup(to);
3543                 recp = validate_recipients(to, NULL, 0);
3544         }
3545         if (subject != NULL) {
3546                 msg->cm_fields['U'] = strdup(subject);
3547         }
3548         msg->cm_fields['M'] = strdup(text);
3549
3550         CtdlSubmitMsg(msg, recp, room, 0);
3551         CtdlFreeMessage(msg);
3552         if (recp != NULL) free_recipients(recp);
3553 }
3554
3555
3556
3557 /*
3558  * Back end function used by CtdlMakeMessage() and similar functions
3559  */
3560 StrBuf *CtdlReadMessageBodyBuf(char *terminator,        /* token signalling EOT */
3561                                long tlen,
3562                                size_t maxlen,           /* maximum message length */
3563                                char *exist,             /* if non-null, append to it;
3564                                                            exist is ALWAYS freed  */
3565                                int crlf,                /* CRLF newlines instead of LF */
3566                                int *sock                /* socket handle or 0 for this session's client socket */
3567         )
3568 {
3569         StrBuf *Message;
3570         StrBuf *LineBuf;
3571         int flushing = 0;
3572         int finished = 0;
3573         int dotdot = 0;
3574
3575         LineBuf = NewStrBufPlain(NULL, SIZ);
3576         if (exist == NULL) {
3577                 Message = NewStrBufPlain(NULL, 4 * SIZ);
3578         }
3579         else {
3580                 Message = NewStrBufPlain(exist, -1);
3581                 free(exist);
3582         }
3583
3584         /* Do we need to change leading ".." to "." for SMTP escaping? */
3585         if ((tlen == 1) && (*terminator == '.')) {
3586                 dotdot = 1;
3587         }
3588
3589         /* read in the lines of message text one by one */
3590         do {
3591                 if (sock != NULL) {
3592                         if ((CtdlSockGetLine(sock, LineBuf, 5) < 0) ||
3593                             (*sock == -1))
3594                                 finished = 1;
3595                 }
3596                 else {
3597                         if (CtdlClientGetLine(LineBuf) < 0) finished = 1;
3598                 }
3599                 if ((StrLength(LineBuf) == tlen) &&
3600                     (!strcmp(ChrPtr(LineBuf), terminator)))
3601                         finished = 1;
3602
3603                 if ( (!flushing) && (!finished) ) {
3604                         if (crlf) {
3605                                 StrBufAppendBufPlain(LineBuf, HKEY("\r\n"), 0);
3606                         }
3607                         else {
3608                                 StrBufAppendBufPlain(LineBuf, HKEY("\n"), 0);
3609                         }
3610
3611                         /* Unescape SMTP-style input of two dots at the beginning of the line */
3612                         if ((dotdot) &&
3613                             (StrLength(LineBuf) == 2) &&
3614                             (!strcmp(ChrPtr(LineBuf), "..")))
3615                         {
3616                                 StrBufCutLeft(LineBuf, 1);
3617                         }
3618
3619                         StrBufAppendBuf(Message, LineBuf, 0);
3620                 }
3621
3622                 /* if we've hit the max msg length, flush the rest */
3623                 if (StrLength(Message) >= maxlen) flushing = 1;
3624
3625         } while (!finished);
3626         FreeStrBuf(&LineBuf);
3627         return Message;
3628 }
3629
3630 void DeleteAsyncMsg(ReadAsyncMsg **Msg)
3631 {
3632         if (*Msg == NULL)
3633                 return;
3634         FreeStrBuf(&(*Msg)->MsgBuf);
3635
3636         free(*Msg);
3637         *Msg = NULL;
3638 }
3639
3640 ReadAsyncMsg *NewAsyncMsg(const char *terminator,       /* token signalling EOT */
3641                           long tlen,
3642                           size_t maxlen,                /* maximum message length */
3643                           size_t expectlen,             /* if we expect a message, how long should it be? */
3644                           char *exist,                  /* if non-null, append to it;
3645                                                            exist is ALWAYS freed  */
3646                           long eLen,                    /* length of exist */
3647                           int crlf                      /* CRLF newlines instead of LF */
3648         )
3649 {
3650         ReadAsyncMsg *NewMsg;
3651
3652         NewMsg = (ReadAsyncMsg *)malloc(sizeof(ReadAsyncMsg));
3653         memset(NewMsg, 0, sizeof(ReadAsyncMsg));
3654
3655         if (exist == NULL) {
3656                 long len;
3657
3658                 if (expectlen == 0) {
3659                         len = 4 * SIZ;
3660                 }
3661                 else {
3662                         len = expectlen + 10;
3663                 }
3664                 NewMsg->MsgBuf = NewStrBufPlain(NULL, len);
3665         }
3666         else {
3667                 NewMsg->MsgBuf = NewStrBufPlain(exist, eLen);
3668                 free(exist);
3669         }
3670         /* Do we need to change leading ".." to "." for SMTP escaping? */
3671         if ((tlen == 1) && (*terminator == '.')) {
3672                 NewMsg->dodot = 1;
3673         }
3674
3675         NewMsg->terminator = terminator;
3676         NewMsg->tlen = tlen;
3677
3678         NewMsg->maxlen = maxlen;
3679
3680         NewMsg->crlf = crlf;
3681
3682         return NewMsg;
3683 }
3684
3685 /*
3686  * Back end function used by CtdlMakeMessage() and similar functions
3687  */
3688 eReadState CtdlReadMessageBodyAsync(AsyncIO *IO)
3689 {
3690         ReadAsyncMsg *ReadMsg;
3691         int MsgFinished = 0;
3692         eReadState Finished = eMustReadMore;
3693
3694 #ifdef BIGBAD_IODBG
3695         char fn [SIZ];
3696         FILE *fd;
3697         const char *pch = ChrPtr(IO->SendBuf.Buf);
3698         const char *pchh = IO->SendBuf.ReadWritePointer;
3699         long nbytes;
3700
3701         if (pchh == NULL)
3702                 pchh = pch;
3703
3704         nbytes = StrLength(IO->SendBuf.Buf) - (pchh - pch);
3705         snprintf(fn, SIZ, "/tmp/foolog_ev_%s.%d",
3706                  ((CitContext*)(IO->CitContext))->ServiceName,
3707                  IO->SendBuf.fd);
3708
3709         fd = fopen(fn, "a+");
3710 #endif
3711
3712         ReadMsg = IO->ReadMsg;
3713
3714         /* read in the lines of message text one by one */
3715         do {
3716                 Finished = StrBufChunkSipLine(IO->IOBuf, &IO->RecvBuf);
3717
3718                 switch (Finished) {
3719                 case eMustReadMore: /// read new from socket...
3720 #ifdef BIGBAD_IODBG
3721                         if (IO->RecvBuf.ReadWritePointer != NULL) {
3722                                 nbytes = StrLength(IO->RecvBuf.Buf) - (IO->RecvBuf.ReadWritePointer - ChrPtr(IO->RecvBuf.Buf));
3723                                 fprintf(fd, "Read; Line unfinished: %ld Bytes still in buffer [", nbytes);
3724
3725                                 fwrite(IO->RecvBuf.ReadWritePointer, nbytes, 1, fd);
3726
3727                                 fprintf(fd, "]\n");
3728                         } else {
3729                                 fprintf(fd, "BufferEmpty! \n");
3730                         }
3731                         fclose(fd);
3732 #endif
3733                         return Finished;
3734                     break;
3735                 case eBufferNotEmpty: /* shouldn't happen... */
3736                 case eReadSuccess: /// done for now...
3737                     break;
3738                 case eReadFail: /// WHUT?
3739                     ///todo: shut down!
3740                         break;
3741                 }
3742
3743
3744                 if ((StrLength(IO->IOBuf) == ReadMsg->tlen) &&
3745                     (!strcmp(ChrPtr(IO->IOBuf), ReadMsg->terminator))) {
3746                         MsgFinished = 1;
3747 #ifdef BIGBAD_IODBG
3748                         fprintf(fd, "found Terminator; Message Size: %d\n", StrLength(ReadMsg->MsgBuf));
3749 #endif
3750                 }
3751                 else if (!ReadMsg->flushing) {
3752
3753 #ifdef BIGBAD_IODBG
3754                         fprintf(fd, "Read Line: [%d][%s]\n", StrLength(IO->IOBuf), ChrPtr(IO->IOBuf));
3755 #endif
3756
3757                         /* Unescape SMTP-style input of two dots at the beginning of the line */
3758                         if ((ReadMsg->dodot) &&
3759                             (StrLength(IO->IOBuf) == 2) &&  /* TODO: do we just unescape lines with two dots or any line? */
3760                             (!strcmp(ChrPtr(IO->IOBuf), "..")))
3761                         {
3762 #ifdef BIGBAD_IODBG
3763                                 fprintf(fd, "UnEscaped!\n");
3764 #endif
3765                                 StrBufCutLeft(IO->IOBuf, 1);
3766                         }
3767
3768                         if (ReadMsg->crlf) {
3769                                 StrBufAppendBufPlain(IO->IOBuf, HKEY("\r\n"), 0);
3770                         }
3771                         else {
3772                                 StrBufAppendBufPlain(IO->IOBuf, HKEY("\n"), 0);
3773                         }
3774
3775                         StrBufAppendBuf(ReadMsg->MsgBuf, IO->IOBuf, 0);
3776                 }
3777
3778                 /* if we've hit the max msg length, flush the rest */
3779                 if (StrLength(ReadMsg->MsgBuf) >= ReadMsg->maxlen) ReadMsg->flushing = 1;
3780
3781         } while (!MsgFinished);
3782
3783 #ifdef BIGBAD_IODBG
3784         fprintf(fd, "Done with reading; %s.\n, ",
3785                 (MsgFinished)?"Message Finished": "FAILED");
3786         fclose(fd);
3787 #endif
3788         if (MsgFinished)
3789                 return eReadSuccess;
3790         else
3791                 return eAbort;
3792 }
3793
3794
3795 /*
3796  * Back end function used by CtdlMakeMessage() and similar functions
3797  */
3798 char *CtdlReadMessageBody(char *terminator,     /* token signalling EOT */
3799                           long tlen,
3800                           size_t maxlen,                /* maximum message length */
3801                           char *exist,          /* if non-null, append to it;
3802                                                    exist is ALWAYS freed  */
3803                           int crlf,             /* CRLF newlines instead of LF */
3804                           int *sock             /* socket handle or 0 for this session's client socket */
3805         )
3806 {
3807         StrBuf *Message;
3808
3809         Message = CtdlReadMessageBodyBuf(terminator,
3810                                          tlen,
3811                                          maxlen,
3812                                          exist,
3813                                          crlf,
3814                                          sock);
3815         if (Message == NULL)
3816                 return NULL;
3817         else
3818                 return SmashStrBuf(&Message);
3819 }
3820
3821
3822 /*
3823  * Build a binary message to be saved on disk.
3824  * (NOTE: if you supply 'preformatted_text', the buffer you give it
3825  * will become part of the message.  This means you are no longer
3826  * responsible for managing that memory -- it will be freed along with
3827  * the rest of the fields when CtdlFreeMessage() is called.)
3828  */
3829
3830 struct CtdlMessage *CtdlMakeMessage(
3831         struct ctdluser *author,        /* author's user structure */
3832         char *recipient,                /* NULL if it's not mail */
3833         char *recp_cc,                  /* NULL if it's not mail */
3834         char *room,                     /* room where it's going */
3835         int type,                       /* see MES_ types in header file */
3836         int format_type,                /* variformat, plain text, MIME... */
3837         char *fake_name,                /* who we're masquerading as */
3838         char *my_email,                 /* which of my email addresses to use (empty is ok) */
3839         char *subject,                  /* Subject (optional) */
3840         char *supplied_euid,            /* ...or NULL if this is irrelevant */
3841         char *preformatted_text,        /* ...or NULL to read text from client */
3842         char *references                /* Thread references */
3843         ) {
3844         char dest_node[256];
3845         char buf[1024];
3846         struct CtdlMessage *msg;
3847         StrBuf *FakeAuthor;
3848         StrBuf *FakeEncAuthor = NULL;
3849
3850         msg = malloc(sizeof(struct CtdlMessage));
3851         memset(msg, 0, sizeof(struct CtdlMessage));
3852         msg->cm_magic = CTDLMESSAGE_MAGIC;
3853         msg->cm_anon_type = type;
3854         msg->cm_format_type = format_type;
3855
3856         /* Don't confuse the poor folks if it's not routed mail. */
3857         strcpy(dest_node, "");
3858
3859         if (recipient != NULL) striplt(recipient);
3860         if (recp_cc != NULL) striplt(recp_cc);
3861
3862         /* Path or Return-Path */
3863         if (my_email == NULL) my_email = "";
3864
3865         if (!IsEmptyStr(my_email)) {
3866                 msg->cm_fields['P'] = strdup(my_email);
3867         }
3868         else {
3869                 snprintf(buf, sizeof buf, "%s", author->fullname);
3870                 msg->cm_fields['P'] = strdup(buf);
3871         }
3872         convert_spaces_to_underscores(msg->cm_fields['P']);
3873
3874         snprintf(buf, sizeof buf, "%ld", (long)time(NULL));     /* timestamp */
3875         msg->cm_fields['T'] = strdup(buf);
3876
3877         if ((fake_name != NULL) && (fake_name[0])) {            /* author */
3878                 FakeAuthor = NewStrBufPlain (fake_name, -1);
3879         }
3880         else {
3881                 FakeAuthor = NewStrBufPlain (author->fullname, -1);
3882         }
3883         StrBufRFC2047encode(&FakeEncAuthor, FakeAuthor);
3884         msg->cm_fields['A'] = SmashStrBuf(&FakeEncAuthor);
3885         FreeStrBuf(&FakeAuthor);
3886
3887         if (CC->room.QRflags & QR_MAILBOX) {            /* room */
3888                 msg->cm_fields['O'] = strdup(&CC->room.QRname[11]);
3889         }
3890         else {
3891                 msg->cm_fields['O'] = strdup(CC->room.QRname);
3892         }
3893
3894         msg->cm_fields['N'] = strdup(NODENAME);         /* nodename */
3895         msg->cm_fields['H'] = strdup(HUMANNODE);                /* hnodename */
3896
3897         if ((recipient != NULL) && (recipient[0] != 0)) {
3898                 msg->cm_fields['R'] = strdup(recipient);
3899         }
3900         if ((recp_cc != NULL) && (recp_cc[0] != 0)) {
3901                 msg->cm_fields['Y'] = strdup(recp_cc);
3902         }
3903         if (dest_node[0] != 0) {
3904                 msg->cm_fields['D'] = strdup(dest_node);
3905         }
3906
3907         if (!IsEmptyStr(my_email)) {
3908                 msg->cm_fields['F'] = strdup(my_email);
3909         }
3910         else if ( (author == &CC->user) && (!IsEmptyStr(CC->cs_inet_email)) ) {
3911                 msg->cm_fields['F'] = strdup(CC->cs_inet_email);
3912         }
3913
3914         if (subject != NULL) {
3915                 long length;
3916                 striplt(subject);
3917                 length = strlen(subject);
3918                 if (length > 0) {
3919                         long i;
3920                         long IsAscii;
3921                         IsAscii = -1;
3922                         i = 0;
3923                         while ((subject[i] != '\0') &&
3924                                (IsAscii = isascii(subject[i]) != 0 ))
3925                                 i++;
3926                         if (IsAscii != 0)
3927                                 msg->cm_fields['U'] = strdup(subject);
3928                         else /* ok, we've got utf8 in the string. */
3929                         {
3930                                 msg->cm_fields['U'] = rfc2047encode(subject, length);
3931                         }
3932
3933                 }
3934         }
3935
3936         if (supplied_euid != NULL) {
3937                 msg->cm_fields['E'] = strdup(supplied_euid);
3938         }
3939
3940         if ((references != NULL) && (!IsEmptyStr(references))) {
3941                 if (msg->cm_fields['W'] != NULL)
3942                         free(msg->cm_fields['W']);
3943                 msg->cm_fields['W'] = strdup(references);
3944         }
3945
3946         if (preformatted_text != NULL) {
3947                 msg->cm_fields['M'] = preformatted_text;
3948         }
3949         else {
3950                 msg->cm_fields['M'] = CtdlReadMessageBody(HKEY("000"), config.c_maxmsglen, NULL, 0, 0);
3951         }
3952
3953         return(msg);
3954 }
3955
3956 extern int netconfig_check_roomaccess(
3957         char *errmsgbuf,
3958         size_t n,
3959         const char* RemoteIdentifier); /* TODO: find a smarter way */
3960
3961 /*
3962  * Check to see whether we have permission to post a message in the current
3963  * room.  Returns a *CITADEL ERROR CODE* and puts a message in errmsgbuf, or
3964  * returns 0 on success.
3965  */
3966 int CtdlDoIHavePermissionToPostInThisRoom(
3967         char *errmsgbuf,
3968         size_t n,
3969         const char* RemoteIdentifier,
3970         int PostPublic,
3971         int is_reply
3972         ) {
3973         int ra;
3974
3975         if (!(CC->logged_in) &&
3976             (PostPublic == POST_LOGGED_IN)) {
3977                 snprintf(errmsgbuf, n, "Not logged in.");
3978                 return (ERROR + NOT_LOGGED_IN);
3979         }
3980         else if (PostPublic == CHECK_EXISTANCE) {
3981                 return (0); // We're Evaling whether a recipient exists
3982         }
3983         else if (!(CC->logged_in)) {
3984
3985                 if ((CC->room.QRflags & QR_READONLY)) {
3986                         snprintf(errmsgbuf, n, "Not logged in.");
3987                         return (ERROR + NOT_LOGGED_IN);
3988                 }
3989                 if (CC->room.QRflags2 & QR2_MODERATED) {
3990                         snprintf(errmsgbuf, n, "Not logged in Moderation feature not yet implemented!");
3991                         return (ERROR + NOT_LOGGED_IN);
3992                 }
3993                 if ((PostPublic!=POST_LMTP) &&(CC->room.QRflags2 & QR2_SMTP_PUBLIC) == 0) {
3994
3995                         return netconfig_check_roomaccess(errmsgbuf, n, RemoteIdentifier);
3996                 }
3997                 return (0);
3998
3999         }
4000
4001         if ((CC->user.axlevel < AxProbU)
4002             && ((CC->room.QRflags & QR_MAILBOX) == 0)) {
4003                 snprintf(errmsgbuf, n, "Need to be validated to enter (except in %s> to sysop)", MAILROOM);
4004                 return (ERROR + HIGHER_ACCESS_REQUIRED);
4005         }
4006
4007         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
4008
4009         if (ra & UA_POSTALLOWED) {
4010                 strcpy(errmsgbuf, "OK to post or reply here");
4011                 return(0);
4012         }
4013
4014         if ( (ra & UA_REPLYALLOWED) && (is_reply) ) {
4015                 /*
4016                  * To be thorough, we ought to check to see if the message they are
4017                  * replying to is actually a valid one in this room, but unless this
4018                  * actually becomes a problem we'll go with high performance instead.
4019                  */
4020                 strcpy(errmsgbuf, "OK to reply here");
4021                 return(0);
4022         }
4023
4024         if ( (ra & UA_REPLYALLOWED) && (!is_reply) ) {
4025                 /* Clarify what happened with a better error message */
4026                 snprintf(errmsgbuf, n, "You may only reply to existing messages here.");
4027                 return (ERROR + HIGHER_ACCESS_REQUIRED);
4028         }
4029
4030         snprintf(errmsgbuf, n, "Higher access is required to post in this room.");
4031         return (ERROR + HIGHER_ACCESS_REQUIRED);
4032
4033 }
4034
4035
4036 /*
4037  * Check to see if the specified user has Internet mail permission
4038  * (returns nonzero if permission is granted)
4039  */
4040 int CtdlCheckInternetMailPermission(struct ctdluser *who) {
4041
4042         /* Do not allow twits to send Internet mail */
4043         if (who->axlevel <= AxProbU) return(0);
4044
4045         /* Globally enabled? */
4046         if (config.c_restrict == 0) return(1);
4047
4048         /* User flagged ok? */
4049         if (who->flags & US_INTERNET) return(2);
4050
4051         /* Aide level access? */
4052         if (who->axlevel >= AxAideU) return(3);
4053
4054         /* No mail for you! */
4055         return(0);
4056 }
4057
4058
4059 /*
4060  * Validate recipients, count delivery types and errors, and handle aliasing
4061  * FIXME check for dupes!!!!!
4062  *
4063  * Returns 0 if all addresses are ok, ret->num_error = -1 if no addresses
4064  * were specified, or the number of addresses found invalid.
4065  *
4066  * Caller needs to free the result using free_recipients()
4067  */
4068 struct recptypes *validate_recipients(const char *supplied_recipients,
4069                                       const char *RemoteIdentifier,
4070                                       int Flags) {
4071         struct CitContext *CCC = CC;
4072         struct recptypes *ret;
4073         char *recipients = NULL;
4074         char *org_recp;
4075         char this_recp[256];
4076         char this_recp_cooked[256];
4077         char append[SIZ];
4078         long len;
4079         int num_recps = 0;
4080         int i, j;
4081         int mailtype;
4082         int invalid;
4083         struct ctdluser tempUS;
4084         struct ctdlroom tempQR;
4085         struct ctdlroom tempQR2;
4086         int err = 0;
4087         char errmsg[SIZ];
4088         int in_quotes = 0;
4089
4090         /* Initialize */
4091         ret = (struct recptypes *) malloc(sizeof(struct recptypes));
4092         if (ret == NULL) return(NULL);
4093
4094         /* Set all strings to null and numeric values to zero */
4095         memset(ret, 0, sizeof(struct recptypes));
4096
4097         if (supplied_recipients == NULL) {
4098                 recipients = strdup("");
4099         }
4100         else {
4101                 recipients = strdup(supplied_recipients);
4102         }
4103
4104         /* Allocate some memory.  Yes, this allocates 500% more memory than we will
4105          * actually need, but it's healthier for the heap than doing lots of tiny
4106          * realloc() calls instead.
4107          */
4108         len = strlen(recipients) + 1024;
4109         ret->errormsg = malloc(len);
4110         ret->recp_local = malloc(len);
4111         ret->recp_internet = malloc(len);
4112         ret->recp_ignet = malloc(len);
4113         ret->recp_room = malloc(len);
4114         ret->display_recp = malloc(len);
4115         ret->recp_orgroom = malloc(len);
4116         org_recp = malloc(len);
4117
4118         ret->errormsg[0] = 0;
4119         ret->recp_local[0] = 0;
4120         ret->recp_internet[0] = 0;
4121         ret->recp_ignet[0] = 0;
4122         ret->recp_room[0] = 0;
4123         ret->recp_orgroom[0] = 0;
4124         ret->display_recp[0] = 0;
4125
4126         ret->recptypes_magic = RECPTYPES_MAGIC;
4127
4128         /* Change all valid separator characters to commas */
4129         for (i=0; !IsEmptyStr(&recipients[i]); ++i) {
4130                 if ((recipients[i] == ';') || (recipients[i] == '|')) {
4131                         recipients[i] = ',';
4132                 }
4133         }
4134
4135         /* Now start extracting recipients... */
4136
4137         while (!IsEmptyStr(recipients)) {
4138                 for (i=0; i<=strlen(recipients); ++i) {
4139                         if (recipients[i] == '\"') in_quotes = 1 - in_quotes;
4140                         if ( ( (recipients[i] == ',') && (!in_quotes) ) || (recipients[i] == 0) ) {
4141                                 safestrncpy(this_recp, recipients, i+1);
4142                                 this_recp[i] = 0;
4143                                 if (recipients[i] == ',') {
4144                                         strcpy(recipients, &recipients[i+1]);
4145                                 }
4146                                 else {
4147                                         strcpy(recipients, "");
4148                                 }
4149                                 break;
4150                         }
4151                 }
4152
4153                 striplt(this_recp);
4154                 if (IsEmptyStr(this_recp))
4155                         break;
4156                 MSG_syslog(LOG_DEBUG, "Evaluating recipient #%d: %s\n", num_recps, this_recp);
4157                 ++num_recps;
4158
4159                 strcpy(org_recp, this_recp);
4160                 mailtype = alias(this_recp);
4161                 mailtype = alias(this_recp);
4162                 mailtype = alias(this_recp);
4163                 j = 0;
4164                 for (j=0; !IsEmptyStr(&this_recp[j]); ++j) {
4165                         if (this_recp[j]=='_') {
4166                                 this_recp_cooked[j] = ' ';
4167                         }
4168                         else {
4169                                 this_recp_cooked[j] = this_recp[j];
4170                         }
4171                 }
4172                 this_recp_cooked[j] = '\0';
4173                 invalid = 0;
4174                 errmsg[0] = 0;
4175                 switch(mailtype) {
4176                 case MES_LOCAL:
4177                         if (!strcasecmp(this_recp, "sysop")) {
4178                                 ++ret->num_room;
4179                                 strcpy(this_recp, config.c_aideroom);
4180                                 if (!IsEmptyStr(ret->recp_room)) {
4181                                         strcat(ret->recp_room, "|");
4182                                 }
4183                                 strcat(ret->recp_room, this_recp);
4184                         }
4185                         else if ( (!strncasecmp(this_recp, "room_", 5))
4186                                   && (!CtdlGetRoom(&tempQR, &this_recp_cooked[5])) ) {
4187
4188                                 /* Save room so we can restore it later */
4189                                 tempQR2 = CCC->room;
4190                                 CCC->room = tempQR;
4191
4192                                 /* Check permissions to send mail to this room */
4193                                 err = CtdlDoIHavePermissionToPostInThisRoom(
4194                                         errmsg,
4195                                         sizeof errmsg,
4196                                         RemoteIdentifier,
4197                                         Flags,
4198                                         0                       /* 0 = not a reply */
4199                                         );
4200                                 if (err)
4201                                 {
4202                                         ++ret->num_error;
4203                                         invalid = 1;
4204                                 }
4205                                 else {
4206                                         ++ret->num_room;
4207                                         if (!IsEmptyStr(ret->recp_room)) {
4208                                                 strcat(ret->recp_room, "|");
4209                                         }
4210                                         strcat(ret->recp_room, &this_recp_cooked[5]);
4211
4212                                         if (!IsEmptyStr(ret->recp_orgroom)) {
4213                                                 strcat(ret->recp_orgroom, "|");
4214                                         }
4215                                         strcat(ret->recp_orgroom, org_recp);
4216
4217                                 }
4218
4219                                 /* Restore room in case something needs it */
4220                                 CCC->room = tempQR2;
4221
4222                         }
4223                         else if (CtdlGetUser(&tempUS, this_recp) == 0) {
4224                                 ++ret->num_local;
4225                                 strcpy(this_recp, tempUS.fullname);
4226                                 if (!IsEmptyStr(ret->recp_local)) {
4227                                         strcat(ret->recp_local, "|");
4228                                 }
4229                                 strcat(ret->recp_local, this_recp);
4230                         }
4231                         else if (CtdlGetUser(&tempUS, this_recp_cooked) == 0) {
4232                                 ++ret->num_local;
4233                                 strcpy(this_recp, tempUS.fullname);
4234                                 if (!IsEmptyStr(ret->recp_local)) {
4235                                         strcat(ret->recp_local, "|");
4236                                 }
4237                                 strcat(ret->recp_local, this_recp);
4238                         }
4239                         else {
4240                                 ++ret->num_error;
4241                                 invalid = 1;
4242                         }
4243                         break;
4244                 case MES_INTERNET:
4245                         /* Yes, you're reading this correctly: if the target
4246                          * domain points back to the local system or an attached
4247                          * Citadel directory, the address is invalid.  That's
4248                          * because if the address were valid, we would have
4249                          * already translated it to a local address by now.
4250                          */
4251                         if (IsDirectory(this_recp, 0)) {
4252                                 ++ret->num_error;
4253                                 invalid = 1;
4254                         }
4255                         else {
4256                                 ++ret->num_internet;
4257                                 if (!IsEmptyStr(ret->recp_internet)) {
4258                                         strcat(ret->recp_internet, "|");
4259                                 }
4260                                 strcat(ret->recp_internet, this_recp);
4261                         }
4262                         break;
4263                 case MES_IGNET:
4264                         ++ret->num_ignet;
4265                         if (!IsEmptyStr(ret->recp_ignet)) {
4266                                 strcat(ret->recp_ignet, "|");
4267                         }
4268                         strcat(ret->recp_ignet, this_recp);
4269                         break;
4270                 case MES_ERROR:
4271                         ++ret->num_error;
4272                         invalid = 1;
4273                         break;
4274                 }
4275                 if (invalid) {
4276                         if (IsEmptyStr(errmsg)) {
4277                                 snprintf(append, sizeof append, "Invalid recipient: %s", this_recp);
4278                         }
4279                         else {
4280                                 snprintf(append, sizeof append, "%s", errmsg);
4281                         }
4282                         if ( (strlen(ret->errormsg) + strlen(append) + 3) < SIZ) {
4283                                 if (!IsEmptyStr(ret->errormsg)) {
4284                                         strcat(ret->errormsg, "; ");
4285                                 }
4286                                 strcat(ret->errormsg, append);
4287                         }
4288                 }
4289                 else {
4290                         if (IsEmptyStr(ret->display_recp)) {
4291                                 strcpy(append, this_recp);
4292                         }
4293                         else {
4294                                 snprintf(append, sizeof append, ", %s", this_recp);
4295                         }
4296                         if ( (strlen(ret->display_recp)+strlen(append)) < SIZ) {
4297                                 strcat(ret->display_recp, append);
4298                         }
4299                 }
4300         }
4301         free(org_recp);
4302
4303         if ((ret->num_local + ret->num_internet + ret->num_ignet +
4304              ret->num_room + ret->num_error) == 0) {
4305                 ret->num_error = (-1);
4306                 strcpy(ret->errormsg, "No recipients specified.");
4307         }
4308
4309         MSGM_syslog(LOG_DEBUG, "validate_recipients()\n");
4310         MSG_syslog(LOG_DEBUG, " local: %d <%s>\n", ret->num_local, ret->recp_local);
4311         MSG_syslog(LOG_DEBUG, "  room: %d <%s>\n", ret->num_room, ret->recp_room);
4312         MSG_syslog(LOG_DEBUG, "  inet: %d <%s>\n", ret->num_internet, ret->recp_internet);
4313         MSG_syslog(LOG_DEBUG, " ignet: %d <%s>\n", ret->num_ignet, ret->recp_ignet);
4314         MSG_syslog(LOG_DEBUG, " error: %d <%s>\n", ret->num_error, ret->errormsg);
4315
4316         free(recipients);
4317         return(ret);
4318 }
4319
4320
4321 /*
4322  * Destructor for struct recptypes
4323  */
4324 void free_recipients(struct recptypes *valid) {
4325
4326         if (valid == NULL) {
4327                 return;
4328         }
4329
4330         if (valid->recptypes_magic != RECPTYPES_MAGIC) {
4331                 struct CitContext *CCC = CC;
4332                 MSGM_syslog(LOG_EMERG, "Attempt to call free_recipients() on some other data type!\n");
4333                 abort();
4334         }
4335
4336         if (valid->errormsg != NULL)            free(valid->errormsg);
4337         if (valid->recp_local != NULL)          free(valid->recp_local);
4338         if (valid->recp_internet != NULL)       free(valid->recp_internet);
4339         if (valid->recp_ignet != NULL)          free(valid->recp_ignet);
4340         if (valid->recp_room != NULL)           free(valid->recp_room);
4341         if (valid->recp_orgroom != NULL)        free(valid->recp_orgroom);
4342         if (valid->display_recp != NULL)        free(valid->display_recp);
4343         if (valid->bounce_to != NULL)           free(valid->bounce_to);
4344         if (valid->envelope_from != NULL)       free(valid->envelope_from);
4345         if (valid->sending_room != NULL)        free(valid->sending_room);
4346         free(valid);
4347 }
4348
4349
4350
4351 /*
4352  * message entry  -  mode 0 (normal)
4353  */
4354 void cmd_ent0(char *entargs)
4355 {
4356         struct CitContext *CCC = CC;
4357         int post = 0;
4358         char recp[SIZ];
4359         char cc[SIZ];
4360         char bcc[SIZ];
4361         char supplied_euid[128];
4362         int anon_flag = 0;
4363         int format_type = 0;
4364         char newusername[256];
4365         char newuseremail[256];
4366         struct CtdlMessage *msg;
4367         int anonymous = 0;
4368         char errmsg[SIZ];
4369         int err = 0;
4370         struct recptypes *valid = NULL;
4371         struct recptypes *valid_to = NULL;
4372         struct recptypes *valid_cc = NULL;
4373         struct recptypes *valid_bcc = NULL;
4374         char subject[SIZ];
4375         int subject_required = 0;
4376         int do_confirm = 0;
4377         int verbose_reply = 0;
4378         long msgnum;
4379         int i, j;
4380         char buf[256];
4381         int newuseremail_ok = 0;
4382         char references[SIZ];
4383         char *ptr;
4384
4385         unbuffer_output();
4386
4387         post = extract_int(entargs, 0);
4388         extract_token(recp, entargs, 1, '|', sizeof recp);
4389         anon_flag = extract_int(entargs, 2);
4390         format_type = extract_int(entargs, 3);
4391         extract_token(subject, entargs, 4, '|', sizeof subject);
4392         extract_token(newusername, entargs, 5, '|', sizeof newusername);
4393         do_confirm = extract_int(entargs, 6);
4394         extract_token(cc, entargs, 7, '|', sizeof cc);
4395         extract_token(bcc, entargs, 8, '|', sizeof bcc);
4396         verbose_reply = extract_int(entargs, 9);
4397         switch(CC->room.QRdefaultview) {
4398         case VIEW_NOTES:
4399         case VIEW_WIKI:
4400                 extract_token(supplied_euid, entargs, 9, '|', sizeof supplied_euid);
4401                 break;
4402         default:
4403                 supplied_euid[0] = 0;
4404                 break;
4405         }
4406         extract_token(newuseremail, entargs, 10, '|', sizeof newuseremail);
4407         extract_token(references, entargs, 11, '|', sizeof references);
4408         for (ptr=references; *ptr != 0; ++ptr) {
4409                 if (*ptr == '!') *ptr = '|';
4410         }
4411
4412         /* first check to make sure the request is valid. */
4413
4414         err = CtdlDoIHavePermissionToPostInThisRoom(
4415                 errmsg,
4416                 sizeof errmsg,
4417                 NULL,
4418                 POST_LOGGED_IN,
4419                 (!IsEmptyStr(references))               /* is this a reply?  or a top-level post? */
4420                 );
4421         if (err)
4422         {
4423                 cprintf("%d %s\n", err, errmsg);
4424                 return;
4425         }
4426
4427         /* Check some other permission type things. */
4428
4429         if (IsEmptyStr(newusername)) {
4430                 strcpy(newusername, CCC->user.fullname);
4431         }
4432         if (  (CCC->user.axlevel < AxAideU)
4433               && (strcasecmp(newusername, CCC->user.fullname))
4434               && (strcasecmp(newusername, CCC->cs_inet_fn))
4435                 ) {
4436                 cprintf("%d You don't have permission to author messages as '%s'.\n",
4437                         ERROR + HIGHER_ACCESS_REQUIRED,
4438                         newusername
4439                         );
4440                 return;
4441         }
4442
4443
4444         if (IsEmptyStr(newuseremail)) {
4445                 newuseremail_ok = 1;
4446         }
4447
4448         if (!IsEmptyStr(newuseremail)) {
4449                 if (!strcasecmp(newuseremail, CCC->cs_inet_email)) {
4450                         newuseremail_ok = 1;
4451                 }
4452                 else if (!IsEmptyStr(CCC->cs_inet_other_emails)) {
4453                         j = num_tokens(CCC->cs_inet_other_emails, '|');
4454                         for (i=0; i<j; ++i) {
4455                                 extract_token(buf, CCC->cs_inet_other_emails, i, '|', sizeof buf);
4456                                 if (!strcasecmp(newuseremail, buf)) {
4457                                         newuseremail_ok = 1;
4458                                 }
4459                         }
4460                 }
4461         }
4462
4463         if (!newuseremail_ok) {
4464                 cprintf("%d You don't have permission to author messages as '%s'.\n",
4465                         ERROR + HIGHER_ACCESS_REQUIRED,
4466                         newuseremail
4467                         );
4468                 return;
4469         }
4470
4471         CCC->cs_flags |= CS_POSTING;
4472
4473         /* In mailbox rooms we have to behave a little differently --
4474          * make sure the user has specified at least one recipient.  Then
4475          * validate the recipient(s).  We do this for the Mail> room, as
4476          * well as any room which has the "Mailbox" view set - unless it
4477          * is the DRAFTS room which does not require recipients
4478          */
4479
4480         if ( (  ( (CCC->room.QRflags & QR_MAILBOX) && (!strcasecmp(&CCC->room.QRname[11], MAILROOM)) )
4481                 || ( (CCC->room.QRflags & QR_MAILBOX) && (CCC->curr_view == VIEW_MAILBOX) )
4482                      ) && (strcasecmp(&CCC->room.QRname[11], USERDRAFTROOM)) !=0 ) {
4483                 if (CCC->user.axlevel < AxProbU) {
4484                         strcpy(recp, "sysop");
4485                         strcpy(cc, "");
4486                         strcpy(bcc, "");
4487                 }
4488
4489                 valid_to = validate_recipients(recp, NULL, 0);
4490                 if (valid_to->num_error > 0) {
4491                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_to->errormsg);
4492                         free_recipients(valid_to);
4493                         return;
4494                 }
4495
4496                 valid_cc = validate_recipients(cc, NULL, 0);
4497                 if (valid_cc->num_error > 0) {
4498                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_cc->errormsg);
4499                         free_recipients(valid_to);
4500                         free_recipients(valid_cc);
4501                         return;
4502                 }
4503
4504                 valid_bcc = validate_recipients(bcc, NULL, 0);
4505                 if (valid_bcc->num_error > 0) {
4506                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_bcc->errormsg);
4507                         free_recipients(valid_to);
4508                         free_recipients(valid_cc);
4509                         free_recipients(valid_bcc);
4510                         return;
4511                 }
4512
4513                 /* Recipient required, but none were specified */
4514                 if ( (valid_to->num_error < 0) && (valid_cc->num_error < 0) && (valid_bcc->num_error < 0) ) {
4515                         free_recipients(valid_to);
4516                         free_recipients(valid_cc);
4517                         free_recipients(valid_bcc);
4518                         cprintf("%d At least one recipient is required.\n", ERROR + NO_SUCH_USER);
4519                         return;
4520                 }
4521
4522                 if (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0) {
4523                         if (CtdlCheckInternetMailPermission(&CCC->user)==0) {
4524                                 cprintf("%d You do not have permission "
4525                                         "to send Internet mail.\n",
4526                                         ERROR + HIGHER_ACCESS_REQUIRED);
4527                                 free_recipients(valid_to);
4528                                 free_recipients(valid_cc);
4529                                 free_recipients(valid_bcc);
4530                                 return;
4531                         }
4532                 }
4533
4534                 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)
4535                      && (CCC->user.axlevel < AxNetU) ) {
4536                         cprintf("%d Higher access required for network mail.\n",
4537                                 ERROR + HIGHER_ACCESS_REQUIRED);
4538                         free_recipients(valid_to);
4539                         free_recipients(valid_cc);
4540                         free_recipients(valid_bcc);
4541                         return;
4542                 }
4543
4544                 if ((RESTRICT_INTERNET == 1)
4545                     && (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0)
4546                     && ((CCC->user.flags & US_INTERNET) == 0)
4547                     && (!CCC->internal_pgm)) {
4548                         cprintf("%d You don't have access to Internet mail.\n",
4549                                 ERROR + HIGHER_ACCESS_REQUIRED);
4550                         free_recipients(valid_to);
4551                         free_recipients(valid_cc);
4552                         free_recipients(valid_bcc);
4553                         return;
4554                 }
4555
4556         }
4557
4558         /* Is this a room which has anonymous-only or anonymous-option? */
4559         anonymous = MES_NORMAL;
4560         if (CCC->room.QRflags & QR_ANONONLY) {
4561                 anonymous = MES_ANONONLY;
4562         }
4563         if (CCC->room.QRflags & QR_ANONOPT) {
4564                 if (anon_flag == 1) {   /* only if the user requested it */
4565                         anonymous = MES_ANONOPT;
4566                 }
4567         }
4568
4569         if ((CCC->room.QRflags & QR_MAILBOX) == 0) {
4570                 recp[0] = 0;
4571         }
4572
4573         /* Recommend to the client that the use of a message subject is
4574          * strongly recommended in this room, if either the SUBJECTREQ flag
4575          * is set, or if there is one or more Internet email recipients.
4576          */
4577         if (CCC->room.QRflags2 & QR2_SUBJECTREQ) subject_required = 1;
4578         if ((valid_to)  && (valid_to->num_internet > 0))        subject_required = 1;
4579         if ((valid_cc)  && (valid_cc->num_internet > 0))        subject_required = 1;
4580         if ((valid_bcc) && (valid_bcc->num_internet > 0))       subject_required = 1;
4581
4582         /* If we're only checking the validity of the request, return
4583          * success without creating the message.
4584          */
4585         if (post == 0) {
4586                 cprintf("%d %s|%d\n", CIT_OK,
4587                         ((valid_to != NULL) ? valid_to->display_recp : ""),
4588                         subject_required);
4589                 free_recipients(valid_to);
4590                 free_recipients(valid_cc);
4591                 free_recipients(valid_bcc);
4592                 return;
4593         }
4594
4595         /* We don't need these anymore because we'll do it differently below */
4596         free_recipients(valid_to);
4597         free_recipients(valid_cc);
4598         free_recipients(valid_bcc);
4599
4600         /* Read in the message from the client. */
4601         if (do_confirm) {
4602                 cprintf("%d send message\n", START_CHAT_MODE);
4603         } else {
4604                 cprintf("%d send message\n", SEND_LISTING);
4605         }
4606
4607         msg = CtdlMakeMessage(&CCC->user, recp, cc,
4608                               CCC->room.QRname, anonymous, format_type,
4609                               newusername, newuseremail, subject,
4610                               ((!IsEmptyStr(supplied_euid)) ? supplied_euid : NULL),
4611                               NULL, references);
4612
4613         /* Put together one big recipients struct containing to/cc/bcc all in
4614          * one.  This is for the envelope.
4615          */
4616         char *all_recps = malloc(SIZ * 3);
4617         strcpy(all_recps, recp);
4618         if (!IsEmptyStr(cc)) {
4619                 if (!IsEmptyStr(all_recps)) {
4620                         strcat(all_recps, ",");
4621                 }
4622                 strcat(all_recps, cc);
4623         }
4624         if (!IsEmptyStr(bcc)) {
4625                 if (!IsEmptyStr(all_recps)) {
4626                         strcat(all_recps, ",");
4627                 }
4628                 strcat(all_recps, bcc);
4629         }
4630         if (!IsEmptyStr(all_recps)) {
4631                 valid = validate_recipients(all_recps, NULL, 0);
4632         }
4633         else {
4634                 valid = NULL;
4635         }
4636         free(all_recps);
4637
4638         if ((valid != NULL) && (valid->num_room == 1))
4639         {
4640                 /* posting into an ML room? set the envelope from
4641                  * to the actual mail address so others get a valid
4642                  * reply-to-header.
4643                  */
4644                 msg->cm_fields['V'] = strdup(valid->recp_orgroom);
4645         }
4646
4647         if (msg != NULL) {
4648                 msgnum = CtdlSubmitMsg(msg, valid, "", QP_EADDR);
4649                 if (verbose_reply)
4650                 {
4651                         if (StrLength(CCC->StatusMessage)>0)
4652                         {
4653                                 StrBufAppendBufPlain(CCC->StatusMessage, HKEY("\n000\n"), 0);
4654                                 cputbuf(CCC->StatusMessage);
4655                         }
4656                         else
4657                                 client_write(HKEY("\n000\n"));
4658                 }
4659
4660                 if (do_confirm) {
4661                         cprintf("%ld\n", msgnum);
4662                         if (msgnum >= 0L) {
4663                                 client_write(HKEY("Message accepted.\n"));
4664                         }
4665                         else {
4666                                 client_write(HKEY("Internal error.\n"));
4667                         }
4668                         if (msg->cm_fields['E'] != NULL) {
4669                                 cprintf("%s\n", msg->cm_fields['E']);
4670                         } else {
4671                                 cprintf("\n");
4672                         }
4673                         cprintf("000\n");
4674                 }
4675
4676                 CtdlFreeMessage(msg);
4677         }
4678         if (valid != NULL) {
4679                 free_recipients(valid);
4680         }
4681         return;
4682 }
4683
4684
4685
4686 /*
4687  * API function to delete messages which match a set of criteria
4688  * (returns the actual number of messages deleted)
4689  */
4690 int CtdlDeleteMessages(char *room_name,         /* which room */
4691                        long *dmsgnums,          /* array of msg numbers to be deleted */
4692                        int num_dmsgnums,        /* number of msgs to be deleted, or 0 for "any" */
4693                        char *content_type       /* or "" for any.  regular expressions expected. */
4694         )
4695 {
4696         struct CitContext *CCC = CC;
4697         struct ctdlroom qrbuf;
4698         struct cdbdata *cdbfr;
4699         long *msglist = NULL;
4700         long *dellist = NULL;
4701         int num_msgs = 0;
4702         int i, j;
4703         int num_deleted = 0;
4704         int delete_this;
4705         struct MetaData smi;
4706         regex_t re;
4707         regmatch_t pm;
4708         int need_to_free_re = 0;
4709
4710         if (content_type) if (!IsEmptyStr(content_type)) {
4711                         regcomp(&re, content_type, 0);
4712                         need_to_free_re = 1;
4713                 }
4714         MSG_syslog(LOG_DEBUG, "CtdlDeleteMessages(%s, %d msgs, %s)\n",
4715                    room_name, num_dmsgnums, content_type);
4716
4717         /* get room record, obtaining a lock... */
4718         if (CtdlGetRoomLock(&qrbuf, room_name) != 0) {
4719                 MSG_syslog(LOG_ERR, "CtdlDeleteMessages(): Room <%s> not found\n",
4720                            room_name);
4721                 if (need_to_free_re) regfree(&re);
4722                 return (0);     /* room not found */
4723         }
4724         cdbfr = cdb_fetch(CDB_MSGLISTS, &qrbuf.QRnumber, sizeof(long));
4725
4726         if (cdbfr != NULL) {
4727                 dellist = malloc(cdbfr->len);
4728                 msglist = (long *) cdbfr->ptr;
4729                 cdbfr->ptr = NULL;      /* CtdlDeleteMessages() now owns this memory */
4730                 num_msgs = cdbfr->len / sizeof(long);
4731                 cdb_free(cdbfr);
4732         }
4733         if (num_msgs > 0) {
4734                 int have_contenttype = !IsEmptyStr(content_type);
4735                 int have_delmsgs = (num_dmsgnums == 0) || (dmsgnums == NULL);
4736                 int have_more_del = 1;
4737
4738                 num_msgs = sort_msglist(msglist, num_msgs);
4739                 if (num_dmsgnums > 1)
4740                         num_dmsgnums = sort_msglist(dmsgnums, num_dmsgnums);
4741 /*
4742                 {
4743                         StrBuf *dbg = NewStrBuf();
4744                         for (i = 0; i < num_dmsgnums; i++)
4745                                 StrBufAppendPrintf(dbg, ", %ld", dmsgnums[i]);
4746                         MSG_syslog(LOG_DEBUG, "Deleting before: %s", ChrPtr(dbg));
4747                         FreeStrBuf(&dbg);
4748                 }
4749 */
4750                 i = 0; j = 0;
4751                 while ((i < num_msgs) && (have_more_del)) {
4752                         delete_this = 0x00;
4753
4754
4755                         /* Set/clear a bit for each criterion */
4756
4757                         /* 0 messages in the list or a null list means that we are
4758                          * interested in deleting any messages which meet the other criteria.
4759                          */
4760                         if (have_delmsgs) {
4761                                 delete_this |= 0x01;
4762                         }
4763                         else {
4764                                 while ((i < num_msgs) && (msglist[i] < dmsgnums[j])) i++;
4765                                 if (msglist[i] == dmsgnums[j]) {
4766                                         delete_this |= 0x01;
4767                                 }
4768                                 j++;
4769                                 have_more_del = (j < num_dmsgnums);
4770                         }
4771
4772                         if (have_contenttype) {
4773                                 GetMetaData(&smi, msglist[i]);
4774                                 if (regexec(&re, smi.meta_content_type, 1, &pm, 0) == 0) {
4775                                         delete_this |= 0x02;
4776                                 }
4777                         } else {
4778                                 delete_this |= 0x02;
4779                         }
4780
4781                         /* Delete message only if all bits are set */
4782                         if (delete_this == 0x03) {
4783                                 dellist[num_deleted++] = msglist[i];
4784                                 msglist[i] = 0L;
4785                         }
4786                         i++;
4787                 }
4788 /*
4789                 {
4790                         StrBuf *dbg = NewStrBuf();
4791                         for (i = 0; i < num_deleted; i++)
4792                                 StrBufAppendPrintf(dbg, ", %ld", dellist[i]);
4793                         MSG_syslog(LOG_DEBUG, "Deleting: %s", ChrPtr(dbg));
4794                         FreeStrBuf(&dbg);
4795                 }
4796 */
4797                 num_msgs = sort_msglist(msglist, num_msgs);
4798                 cdb_store(CDB_MSGLISTS, &qrbuf.QRnumber, (int)sizeof(long),
4799                           msglist, (int)(num_msgs * sizeof(long)));
4800
4801                 if (num_msgs > 0)
4802                         qrbuf.QRhighest = msglist[num_msgs - 1];
4803                 else
4804                         qrbuf.QRhighest = 0;
4805         }
4806         CtdlPutRoomLock(&qrbuf);
4807
4808         /* Go through the messages we pulled out of the index, and decrement
4809          * their reference counts by 1.  If this is the only room the message
4810          * was in, the reference count will reach zero and the message will
4811          * automatically be deleted from the database.  We do this in a
4812          * separate pass because there might be plug-in hooks getting called,
4813          * and we don't want that happening during an S_ROOMS critical
4814          * section.
4815          */
4816         if (num_deleted) {
4817                 for (i=0; i<num_deleted; ++i) {
4818                         PerformDeleteHooks(qrbuf.QRname, dellist[i]);
4819                 }
4820                 AdjRefCountList(dellist, num_deleted, -1);
4821         }
4822         /* Now free the memory we used, and go away. */
4823         if (msglist != NULL) free(msglist);
4824         if (dellist != NULL) free(dellist);
4825         MSG_syslog(LOG_DEBUG, "%d message(s) deleted.\n", num_deleted);
4826         if (need_to_free_re) regfree(&re);
4827         return (num_deleted);
4828 }
4829
4830
4831
4832 /*
4833  * Check whether the current user has permission to delete messages from
4834  * the current room (returns 1 for yes, 0 for no)
4835  */
4836 int CtdlDoIHavePermissionToDeleteMessagesFromThisRoom(void) {
4837         int ra;
4838         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
4839         if (ra & UA_DELETEALLOWED) return(1);
4840         return(0);
4841 }
4842
4843
4844
4845
4846 /*
4847  * Delete message from current room
4848  */
4849 void cmd_dele(char *args)
4850 {
4851         int num_deleted;
4852         int i;
4853         char msgset[SIZ];
4854         char msgtok[32];
4855         long *msgs;
4856         int num_msgs = 0;
4857
4858         extract_token(msgset, args, 0, '|', sizeof msgset);
4859         num_msgs = num_tokens(msgset, ',');
4860         if (num_msgs < 1) {
4861                 cprintf("%d Nothing to do.\n", CIT_OK);
4862                 return;
4863         }
4864
4865         if (CtdlDoIHavePermissionToDeleteMessagesFromThisRoom() == 0) {
4866                 cprintf("%d Higher access required.\n",
4867                         ERROR + HIGHER_ACCESS_REQUIRED);
4868                 return;
4869         }
4870
4871         /*
4872          * Build our message set to be moved/copied
4873          */
4874         msgs = malloc(num_msgs * sizeof(long));
4875         for (i=0; i<num_msgs; ++i) {
4876                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4877                 msgs[i] = atol(msgtok);
4878         }
4879
4880         num_deleted = CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4881         free(msgs);
4882
4883         if (num_deleted) {
4884                 cprintf("%d %d message%s deleted.\n", CIT_OK,
4885                         num_deleted, ((num_deleted != 1) ? "s" : ""));
4886         } else {
4887                 cprintf("%d Message not found.\n", ERROR + MESSAGE_NOT_FOUND);
4888         }
4889 }
4890
4891
4892
4893
4894 /*
4895  * move or copy a message to another room
4896  */
4897 void cmd_move(char *args)
4898 {
4899         char msgset[SIZ];
4900         char msgtok[32];
4901         long *msgs;
4902         int num_msgs = 0;
4903
4904         char targ[ROOMNAMELEN];
4905         struct ctdlroom qtemp;
4906         int err;
4907         int is_copy = 0;
4908         int ra;
4909         int permit = 0;
4910         int i;
4911
4912         extract_token(msgset, args, 0, '|', sizeof msgset);
4913         num_msgs = num_tokens(msgset, ',');
4914         if (num_msgs < 1) {
4915                 cprintf("%d Nothing to do.\n", CIT_OK);
4916                 return;
4917         }
4918
4919         extract_token(targ, args, 1, '|', sizeof targ);
4920         convert_room_name_macros(targ, sizeof targ);
4921         targ[ROOMNAMELEN - 1] = 0;
4922         is_copy = extract_int(args, 2);
4923
4924         if (CtdlGetRoom(&qtemp, targ) != 0) {
4925                 cprintf("%d '%s' does not exist.\n", ERROR + ROOM_NOT_FOUND, targ);
4926                 return;
4927         }
4928
4929         if (!strcasecmp(qtemp.QRname, CC->room.QRname)) {
4930                 cprintf("%d Source and target rooms are the same.\n", ERROR + ALREADY_EXISTS);
4931                 return;
4932         }
4933
4934         CtdlGetUser(&CC->user, CC->curr_user);
4935         CtdlRoomAccess(&qtemp, &CC->user, &ra, NULL);
4936
4937         /* Check for permission to perform this operation.
4938          * Remember: "CC->room" is source, "qtemp" is target.
4939          */
4940         permit = 0;
4941
4942         /* Aides can move/copy */
4943         if (CC->user.axlevel >= AxAideU) permit = 1;
4944
4945         /* Room aides can move/copy */
4946         if (CC->user.usernum == CC->room.QRroomaide) permit = 1;
4947
4948         /* Permit move/copy from personal rooms */
4949         if ((CC->room.QRflags & QR_MAILBOX)
4950             && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
4951
4952         /* Permit only copy from public to personal room */
4953         if ( (is_copy)
4954              && (!(CC->room.QRflags & QR_MAILBOX))
4955              && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
4956
4957         /* Permit message removal from collaborative delete rooms */
4958         if (CC->room.QRflags2 & QR2_COLLABDEL) permit = 1;
4959
4960         /* Users allowed to post into the target room may move into it too. */
4961         if ((CC->room.QRflags & QR_MAILBOX) &&
4962             (qtemp.QRflags & UA_POSTALLOWED))  permit = 1;
4963
4964         /* User must have access to target room */
4965         if (!(ra & UA_KNOWN))  permit = 0;
4966
4967         if (!permit) {
4968                 cprintf("%d Higher access required.\n",
4969                         ERROR + HIGHER_ACCESS_REQUIRED);
4970                 return;
4971         }
4972
4973         /*
4974          * Build our message set to be moved/copied
4975          */
4976         msgs = malloc(num_msgs * sizeof(long));
4977         for (i=0; i<num_msgs; ++i) {
4978                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4979                 msgs[i] = atol(msgtok);
4980         }
4981
4982         /*
4983          * Do the copy
4984          */
4985         err = CtdlSaveMsgPointersInRoom(targ, msgs, num_msgs, 1, NULL, 0);
4986         if (err != 0) {
4987                 cprintf("%d Cannot store message(s) in %s: error %d\n",
4988                         err, targ, err);
4989                 free(msgs);
4990                 return;
4991         }
4992
4993         /* Now delete the message from the source room,
4994          * if this is a 'move' rather than a 'copy' operation.
4995          */
4996         if (is_copy == 0) {
4997                 CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4998         }
4999         free(msgs);
5000
5001         cprintf("%d Message(s) %s.\n", CIT_OK, (is_copy ? "copied" : "moved") );
5002 }
5003
5004
5005
5006 /*
5007  * GetMetaData()  -  Get the supplementary record for a message
5008  */
5009 void GetMetaData(struct MetaData *smibuf, long msgnum)
5010 {
5011
5012         struct cdbdata *cdbsmi;
5013         long TheIndex;
5014
5015         memset(smibuf, 0, sizeof(struct MetaData));
5016         smibuf->meta_msgnum = msgnum;
5017         smibuf->meta_refcount = 1;      /* Default reference count is 1 */
5018
5019         /* Use the negative of the message number for its supp record index */
5020         TheIndex = (0L - msgnum);
5021
5022         cdbsmi = cdb_fetch(CDB_MSGMAIN, &TheIndex, sizeof(long));
5023         if (cdbsmi == NULL) {
5024                 return;         /* record not found; go with defaults */
5025         }
5026         memcpy(smibuf, cdbsmi->ptr,
5027                ((cdbsmi->len > sizeof(struct MetaData)) ?
5028                 sizeof(struct MetaData) : cdbsmi->len));
5029         cdb_free(cdbsmi);
5030         return;
5031 }
5032
5033
5034 /*
5035  * PutMetaData()  -  (re)write supplementary record for a message
5036  */
5037 void PutMetaData(struct MetaData *smibuf)
5038 {
5039         long TheIndex;
5040
5041         /* Use the negative of the message number for the metadata db index */
5042         TheIndex = (0L - smibuf->meta_msgnum);
5043
5044         cdb_store(CDB_MSGMAIN,
5045                   &TheIndex, (int)sizeof(long),
5046                   smibuf, (int)sizeof(struct MetaData));
5047
5048 }
5049
5050 /*
5051  * AdjRefCount  -  submit an adjustment to the reference count for a message.
5052  *                 (These are just queued -- we actually process them later.)
5053  */
5054 void AdjRefCount(long msgnum, int incr)
5055 {
5056         struct CitContext *CCC = CC;
5057         struct arcq new_arcq;
5058         int rv = 0;
5059
5060         MSG_syslog(LOG_DEBUG, "AdjRefCount() msg %ld ref count delta %+d\n", msgnum, incr);
5061
5062         begin_critical_section(S_SUPPMSGMAIN);
5063         if (arcfp == NULL) {
5064                 arcfp = fopen(file_arcq, "ab+");
5065                 chown(file_arcq, CTDLUID, (-1));
5066                 chmod(file_arcq, 0600);
5067         }
5068         end_critical_section(S_SUPPMSGMAIN);
5069
5070         /* msgnum < 0 means that we're trying to close the file */
5071         if (msgnum < 0) {
5072                 MSGM_syslog(LOG_DEBUG, "Closing the AdjRefCount queue file\n");
5073                 begin_critical_section(S_SUPPMSGMAIN);
5074                 if (arcfp != NULL) {
5075                         fclose(arcfp);
5076                         arcfp = NULL;
5077                 }
5078                 end_critical_section(S_SUPPMSGMAIN);
5079                 return;
5080         }
5081
5082         /*
5083          * If we can't open the queue, perform the operation synchronously.
5084          */
5085         if (arcfp == NULL) {
5086                 TDAP_AdjRefCount(msgnum, incr);
5087                 return;
5088         }
5089
5090         new_arcq.arcq_msgnum = msgnum;
5091         new_arcq.arcq_delta = incr;
5092         rv = fwrite(&new_arcq, sizeof(struct arcq), 1, arcfp);
5093         if (rv == -1) {
5094                 MSG_syslog(LOG_EMERG, "Couldn't write Refcount Queue File %s: %s\n",
5095                            file_arcq,
5096                            strerror(errno));
5097         }
5098         fflush(arcfp);
5099
5100         return;
5101 }
5102
5103 void AdjRefCountList(long *msgnum, long nmsg, int incr)
5104 {
5105         struct CitContext *CCC = CC;
5106         long i, the_size, offset;
5107         struct arcq *new_arcq;
5108         int rv = 0;
5109
5110         MSG_syslog(LOG_DEBUG, "AdjRefCountList() msg %ld ref count delta %+d\n", nmsg, incr);
5111
5112         begin_critical_section(S_SUPPMSGMAIN);
5113         if (arcfp == NULL) {
5114                 arcfp = fopen(file_arcq, "ab+");
5115                 chown(file_arcq, CTDLUID, (-1));
5116                 chmod(file_arcq, 0600);
5117         }
5118         end_critical_section(S_SUPPMSGMAIN);
5119
5120         /*
5121          * If we can't open the queue, perform the operation synchronously.
5122          */
5123         if (arcfp == NULL) {
5124                 for (i = 0; i < nmsg; i++)
5125                         TDAP_AdjRefCount(msgnum[i], incr);
5126                 return;
5127         }
5128
5129         the_size = sizeof(struct arcq) * nmsg;
5130         new_arcq = malloc(the_size);
5131         for (i = 0; i < nmsg; i++) {
5132                 new_arcq[i].arcq_msgnum = msgnum[i];
5133                 new_arcq[i].arcq_delta = incr;
5134         }
5135         rv = 0;
5136         offset = 0;
5137         while ((rv >= 0) && (offset < the_size))
5138         {
5139                 rv = fwrite(new_arcq + offset, 1, the_size - offset, arcfp);
5140                 if (rv == -1) {
5141                         MSG_syslog(LOG_EMERG, "Couldn't write Refcount Queue File %s: %s\n",
5142                                    file_arcq,
5143                                    strerror(errno));
5144                 }
5145                 else {
5146                         offset += rv;
5147                 }
5148         }
5149         free(new_arcq);
5150         fflush(arcfp);
5151
5152         return;
5153 }
5154
5155
5156 /*
5157  * TDAP_ProcessAdjRefCountQueue()
5158  *
5159  * Process the queue of message count adjustments that was created by calls
5160  * to AdjRefCount() ... by reading the queue and calling TDAP_AdjRefCount()
5161  * for each one.  This should be an "off hours" operation.
5162  */
5163 int TDAP_ProcessAdjRefCountQueue(void)
5164 {
5165         struct CitContext *CCC = CC;
5166         char file_arcq_temp[PATH_MAX];
5167         int r;
5168         FILE *fp;
5169         struct arcq arcq_rec;
5170         int num_records_processed = 0;
5171
5172         snprintf(file_arcq_temp, sizeof file_arcq_temp, "%s.%04x", file_arcq, rand());
5173
5174         begin_critical_section(S_SUPPMSGMAIN);
5175         if (arcfp != NULL) {
5176                 fclose(arcfp);
5177                 arcfp = NULL;
5178         }
5179
5180         r = link(file_arcq, file_arcq_temp);
5181         if (r != 0) {
5182                 MSG_syslog(LOG_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
5183                 end_critical_section(S_SUPPMSGMAIN);
5184                 return(num_records_processed);
5185         }
5186
5187         unlink(file_arcq);
5188         end_critical_section(S_SUPPMSGMAIN);
5189
5190         fp = fopen(file_arcq_temp, "rb");
5191         if (fp == NULL) {
5192                 MSG_syslog(LOG_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
5193                 return(num_records_processed);
5194         }
5195
5196         while (fread(&arcq_rec, sizeof(struct arcq), 1, fp) == 1) {
5197                 TDAP_AdjRefCount(arcq_rec.arcq_msgnum, arcq_rec.arcq_delta);
5198                 ++num_records_processed;
5199         }
5200
5201         fclose(fp);
5202         r = unlink(file_arcq_temp);
5203         if (r != 0) {
5204                 MSG_syslog(LOG_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
5205         }
5206
5207         return(num_records_processed);
5208 }
5209
5210
5211
5212 /*
5213  * TDAP_AdjRefCount  -  adjust the reference count for a message.
5214  *                      This one does it "for real" because it's called by
5215  *                      the autopurger function that processes the queue
5216  *                      created by AdjRefCount().   If a message's reference
5217  *                      count becomes zero, we also delete the message from
5218  *                      disk and de-index it.
5219  */
5220 void TDAP_AdjRefCount(long msgnum, int incr)
5221 {
5222         struct CitContext *CCC = CC;
5223
5224         struct MetaData smi;
5225         long delnum;
5226
5227         /* This is a *tight* critical section; please keep it that way, as
5228          * it may get called while nested in other critical sections.
5229          * Complicating this any further will surely cause deadlock!
5230          */
5231         begin_critical_section(S_SUPPMSGMAIN);
5232         GetMetaData(&smi, msgnum);
5233         smi.meta_refcount += incr;
5234         PutMetaData(&smi);
5235         end_critical_section(S_SUPPMSGMAIN);
5236         MSG_syslog(LOG_DEBUG, "TDAP_AdjRefCount() msg %ld ref count delta %+d, is now %d\n",
5237                    msgnum, incr, smi.meta_refcount
5238                 );
5239
5240         /* If the reference count is now zero, delete the message
5241          * (and its supplementary record as well).
5242          */
5243         if (smi.meta_refcount == 0) {
5244                 MSG_syslog(LOG_DEBUG, "Deleting message <%ld>\n", msgnum);
5245
5246                 /* Call delete hooks with NULL room to show it has gone altogether */
5247                 PerformDeleteHooks(NULL, msgnum);
5248
5249                 /* Remove from message base */
5250                 delnum = msgnum;
5251                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
5252                 cdb_delete(CDB_BIGMSGS, &delnum, (int)sizeof(long));
5253
5254                 /* Remove metadata record */
5255                 delnum = (0L - msgnum);
5256                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
5257         }
5258
5259 }
5260
5261 /*
5262  * Write a generic object to this room
5263  *
5264  * Note: this could be much more efficient.  Right now we use two temporary
5265  * files, and still pull the message into memory as with all others.
5266  */
5267 void CtdlWriteObject(char *req_room,                    /* Room to stuff it in */
5268                      char *content_type,                /* MIME type of this object */
5269                      char *raw_message,         /* Data to be written */
5270                      off_t raw_length,          /* Size of raw_message */
5271                      struct ctdluser *is_mailbox,       /* Mailbox room? */
5272                      int is_binary,                     /* Is encoding necessary? */
5273                      int is_unique,                     /* Del others of this type? */
5274                      unsigned int flags         /* Internal save flags */
5275         )
5276 {
5277         struct CitContext *CCC = CC;
5278         struct ctdlroom qrbuf;
5279         char roomname[ROOMNAMELEN];
5280         struct CtdlMessage *msg;
5281         char *encoded_message = NULL;
5282
5283         if (is_mailbox != NULL) {
5284                 CtdlMailboxName(roomname, sizeof roomname, is_mailbox, req_room);
5285         }
5286         else {
5287                 safestrncpy(roomname, req_room, sizeof(roomname));
5288         }
5289
5290         MSG_syslog(LOG_DEBUG, "Raw length is %ld\n", (long)raw_length);
5291
5292         if (is_binary) {
5293                 encoded_message = malloc((size_t) (((raw_length * 134) / 100) + 4096 ) );
5294         }
5295         else {
5296                 encoded_message = malloc((size_t)(raw_length + 4096));
5297         }
5298
5299         sprintf(encoded_message, "Content-type: %s\n", content_type);
5300
5301         if (is_binary) {
5302                 sprintf(&encoded_message[strlen(encoded_message)],
5303                         "Content-transfer-encoding: base64\n\n"
5304                         );
5305         }
5306         else {
5307                 sprintf(&encoded_message[strlen(encoded_message)],
5308                         "Content-transfer-encoding: 7bit\n\n"
5309                         );
5310         }
5311
5312         if (is_binary) {
5313                 CtdlEncodeBase64(
5314                         &encoded_message[strlen(encoded_message)],
5315                         raw_message,
5316                         (int)raw_length,
5317                         0
5318                         );
5319         }
5320         else {
5321                 memcpy(
5322                         &encoded_message[strlen(encoded_message)],
5323                         raw_message,
5324                         (int)(raw_length+1)
5325                         );
5326         }
5327
5328         MSGM_syslog(LOG_DEBUG, "Allocating\n");
5329         msg = malloc(sizeof(struct CtdlMessage));
5330         memset(msg, 0, sizeof(struct CtdlMessage));
5331         msg->cm_magic = CTDLMESSAGE_MAGIC;
5332         msg->cm_anon_type = MES_NORMAL;
5333         msg->cm_format_type = 4;
5334         msg->cm_fields['A'] = strdup(CCC->user.fullname);
5335         msg->cm_fields['O'] = strdup(req_room);
5336         msg->cm_fields['N'] = strdup(config.c_nodename);
5337         msg->cm_fields['H'] = strdup(config.c_humannode);
5338         msg->cm_flags = flags;
5339
5340         msg->cm_fields['M'] = encoded_message;
5341
5342         /* Create the requested room if we have to. */
5343         if (CtdlGetRoom(&qrbuf, roomname) != 0) {
5344                 CtdlCreateRoom(roomname,
5345                                ( (is_mailbox != NULL) ? 5 : 3 ),
5346                                "", 0, 1, 0, VIEW_BBS);
5347         }
5348         /* If the caller specified this object as unique, delete all
5349          * other objects of this type that are currently in the room.
5350          */
5351         if (is_unique) {
5352                 MSG_syslog(LOG_DEBUG, "Deleted %d other msgs of this type\n",
5353                            CtdlDeleteMessages(roomname, NULL, 0, content_type)
5354                         );
5355         }
5356         /* Now write the data */
5357         CtdlSubmitMsg(msg, NULL, roomname, 0);
5358         CtdlFreeMessage(msg);
5359 }
5360
5361
5362
5363
5364
5365
5366 void CtdlGetSysConfigBackend(long msgnum, void *userdata) {
5367         config_msgnum = msgnum;
5368 }
5369
5370
5371 char *CtdlGetSysConfig(char *sysconfname) {
5372         char hold_rm[ROOMNAMELEN];
5373         long msgnum;
5374         char *conf;
5375         struct CtdlMessage *msg;
5376         char buf[SIZ];
5377
5378         strcpy(hold_rm, CC->room.QRname);
5379         if (CtdlGetRoom(&CC->room, SYSCONFIGROOM) != 0) {
5380                 CtdlGetRoom(&CC->room, hold_rm);
5381                 return NULL;
5382         }
5383
5384
5385         /* We want the last (and probably only) config in this room */
5386         begin_critical_section(S_CONFIG);
5387         config_msgnum = (-1L);
5388         CtdlForEachMessage(MSGS_LAST, 1, NULL, sysconfname, NULL,
5389                            CtdlGetSysConfigBackend, NULL);
5390         msgnum = config_msgnum;
5391         end_critical_section(S_CONFIG);
5392
5393         if (msgnum < 0L) {
5394                 conf = NULL;
5395         }
5396         else {
5397                 msg = CtdlFetchMessage(msgnum, 1);
5398                 if (msg != NULL) {
5399                         conf = strdup(msg->cm_fields['M']);
5400                         CtdlFreeMessage(msg);
5401                 }
5402                 else {
5403                         conf = NULL;
5404                 }
5405         }
5406
5407         CtdlGetRoom(&CC->room, hold_rm);
5408
5409         if (conf != NULL) do {
5410                         extract_token(buf, conf, 0, '\n', sizeof buf);
5411                         strcpy(conf, &conf[strlen(buf)+1]);
5412                 } while ( (!IsEmptyStr(conf)) && (!IsEmptyStr(buf)) );
5413
5414         return(conf);
5415 }
5416
5417
5418 void CtdlPutSysConfig(char *sysconfname, char *sysconfdata) {
5419         CtdlWriteObject(SYSCONFIGROOM, sysconfname, sysconfdata, (strlen(sysconfdata)+1), NULL, 0, 1, 0);
5420 }
5421
5422
5423 /*
5424  * Determine whether a given Internet address belongs to the current user
5425  */
5426 int CtdlIsMe(char *addr, int addr_buf_len)
5427 {
5428         struct recptypes *recp;
5429         int i;
5430
5431         recp = validate_recipients(addr, NULL, 0);
5432         if (recp == NULL) return(0);
5433
5434         if (recp->num_local == 0) {
5435                 free_recipients(recp);
5436                 return(0);
5437         }
5438
5439         for (i=0; i<recp->num_local; ++i) {
5440                 extract_token(addr, recp->recp_local, i, '|', addr_buf_len);
5441                 if (!strcasecmp(addr, CC->user.fullname)) {
5442                         free_recipients(recp);
5443                         return(1);
5444                 }
5445         }
5446
5447         free_recipients(recp);
5448         return(0);
5449 }
5450
5451
5452 /*
5453  * Citadel protocol command to do the same
5454  */
5455 void cmd_isme(char *argbuf) {
5456         char addr[256];
5457
5458         if (CtdlAccessCheck(ac_logged_in)) return;
5459         extract_token(addr, argbuf, 0, '|', sizeof addr);
5460
5461         if (CtdlIsMe(addr, sizeof addr)) {
5462                 cprintf("%d %s\n", CIT_OK, addr);
5463         }
5464         else {
5465                 cprintf("%d Not you.\n", ERROR + ILLEGAL_VALUE);
5466         }
5467
5468 }
5469
5470
5471 /*****************************************************************************/
5472 /*                      MODULE INITIALIZATION STUFF                          */
5473 /*****************************************************************************/
5474 void SetMessageDebugEnabled(const int n)
5475 {
5476         MessageDebugEnabled = n;
5477 }
5478 CTDL_MODULE_INIT(msgbase)
5479 {
5480         if (!threading) {
5481                 CtdlRegisterDebugFlagHook(HKEY("messages"), SetMessageDebugEnabled, &MessageDebugEnabled);
5482
5483                 CtdlRegisterProtoHook(cmd_msgs, "MSGS", "Output a list of messages in the current room");
5484                 CtdlRegisterProtoHook(cmd_msg0, "MSG0", "Output a message in plain text format");
5485                 CtdlRegisterProtoHook(cmd_msg2, "MSG2", "Output a message in RFC822 format");
5486                 CtdlRegisterProtoHook(cmd_msg3, "MSG3", "Output a message in raw format (deprecated)");
5487                 CtdlRegisterProtoHook(cmd_msg4, "MSG4", "Output a message in the client's preferred format");
5488                 CtdlRegisterProtoHook(cmd_msgp, "MSGP", "Select preferred format for MSG4 output");
5489                 CtdlRegisterProtoHook(cmd_opna, "OPNA", "Open an attachment for download");
5490                 CtdlRegisterProtoHook(cmd_dlat, "DLAT", "Download an attachment");
5491                 CtdlRegisterProtoHook(cmd_ent0, "ENT0", "Enter a message");
5492                 CtdlRegisterProtoHook(cmd_dele, "DELE", "Delete a message");
5493                 CtdlRegisterProtoHook(cmd_move, "MOVE", "Move or copy a message to another room");
5494                 CtdlRegisterProtoHook(cmd_isme, "ISME", "Determine whether an email address belongs to a user");
5495         }
5496
5497         /* return our Subversion id for the Log */
5498         return "msgbase";
5499 }