citadel/msgbase.c

   1 /*
   2  * Implements the message store.
   3  *
   4  * Copyright (c) 1987-2012 by the citadel.org team
   5  *
   6  * This program is open source software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 3.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include "sysdep.h"
  16 #include <stdlib.h>
  17 #include <unistd.h>
  18 #include <stdio.h>
  19 #include <fcntl.h>
  20
  21 #if TIME_WITH_SYS_TIME
  22 # include <sys/time.h>
  23 # include <time.h>
  24 #else
  25 # if HAVE_SYS_TIME_H
  26 #  include <sys/time.h>
  27 # else
  28 #  include <time.h>
  29 # endif
  30 #endif
  31
  32
  33 #include <ctype.h>
  34 #include <string.h>
  35 #include <limits.h>
  36 #include <errno.h>
  37 #include <stdarg.h>
  38 #include <sys/stat.h>
  39 #include <sys/types.h>
  40 #include <regex.h>
  41 #include <libcitadel.h>
  42 #include "citadel.h"
  43 #include "server.h"
  44 #include "serv_extensions.h"
  45 #include "database.h"
  46 #include "msgbase.h"
  47 #include "support.h"
  48 #include "sysdep_decls.h"
  49 #include "citserver.h"
  50 #include "room_ops.h"
  51 #include "user_ops.h"
  52 #include "file_ops.h"
  53 #include "config.h"
  54 #include "control.h"
  55 #include "genstamp.h"
  56 #include "internet_addressing.h"
  57 #include "euidindex.h"
  58 #include "journaling.h"
  59 #include "citadel_dirs.h"
  60 #include "clientsocket.h"
  61 #include "threads.h"
  62
  63 #include "ctdl_module.h"
  64
  65 long config_msgnum;
  66 struct addresses_to_be_filed *atbf = NULL;
  67
  68 /* This temp file holds the queue of operations for AdjRefCount() */
  69 static FILE *arcfp = NULL;
  70
  71 void AdjRefCountList(long *msgnum, long nmsg, int incr);
  72
  73 /*
  74  * These are the four-character field headers we use when outputting
  75  * messages in Citadel format (as opposed to RFC822 format).
  76  */
  77 char *msgkeys[] = {
  78         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  79         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  80         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  81         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  82         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  83         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  84         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  85         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  86         NULL,
  87         "from",
  88         NULL, NULL, NULL,
  89         "exti",
  90         "rfca",
  91         NULL,
  92         "hnod",
  93         "msgn",
  94         "jrnl",
  95         NULL,
  96         "list",
  97         "text",
  98         "node",
  99         "room",
 100         "path",
 101         NULL,
 102         "rcpt",
 103         "spec",
 104         "time",
 105         "subj",
 106         NULL,
 107         "wefw",
 108         NULL,
 109         "cccc",
 110         NULL
 111 };
 112
 113 /*
 114  * This function is self explanatory.
 115  * (What can I say, I'm in a weird mood today...)
 116  */
 117 void remove_any_whitespace_to_the_left_or_right_of_at_symbol(char *name)
 118 {
 119         int i;
 120
 121         for (i = 0; i < strlen(name); ++i) {
 122                 if (name[i] == '@') {
 123                         while (isspace(name[i - 1]) && i > 0) {
 124                                 strcpy(&name[i - 1], &name[i]);
 125                                 --i;
 126                         }
 127                         while (isspace(name[i + 1])) {
 128                                 strcpy(&name[i + 1], &name[i + 2]);
 129                         }
 130                 }
 131         }
 132 }
 133
 134
 135 /*
 136  * Aliasing for network mail.
 137  * (Error messages have been commented out, because this is a server.)
 138  */
 139 int alias(char *name)
 140 {                               /* process alias and routing info for mail */
 141         FILE *fp;
 142         int a, i;
 143         char aaa[SIZ], bbb[SIZ];
 144         char *ignetcfg = NULL;
 145         char *ignetmap = NULL;
 146         int at = 0;
 147         char node[64];
 148         char testnode[64];
 149         char buf[SIZ];
 150
 151         char original_name[256];
 152         safestrncpy(original_name, name, sizeof original_name);
 153
 154         striplt(name);
 155         remove_any_whitespace_to_the_left_or_right_of_at_symbol(name);
 156         stripallbut(name, '<', '>');
 157
 158         fp = fopen(file_mail_aliases, "r");
 159         if (fp == NULL) {
 160                 fp = fopen("/dev/null", "r");
 161         }
 162         if (fp == NULL) {
 163                 return (MES_ERROR);
 164         }
 165         strcpy(aaa, "");
 166         strcpy(bbb, "");
 167         while (fgets(aaa, sizeof aaa, fp) != NULL) {
 168                 while (isspace(name[0]))
 169                         strcpy(name, &name[1]);
 170                 aaa[strlen(aaa) - 1] = 0;
 171                 strcpy(bbb, "");
 172                 for (a = 0; a < strlen(aaa); ++a) {
 173                         if (aaa[a] == ',') {
 174                                 strcpy(bbb, &aaa[a + 1]);
 175                                 aaa[a] = 0;
 176                         }
 177                 }
 178                 if (!strcasecmp(name, aaa))
 179                         strcpy(name, bbb);
 180         }
 181         fclose(fp);
 182
 183         /* Hit the Global Address Book */
 184         if (CtdlDirectoryLookup(aaa, name, sizeof aaa) == 0) {
 185                 strcpy(name, aaa);
 186         }
 187
 188         if (strcasecmp(original_name, name)) {
 189                 syslog(LOG_INFO, "%s is being forwarded to %s\n", original_name, name);
 190         }
 191
 192         /* Change "user @ xxx" to "user" if xxx is an alias for this host */
 193         for (a=0; a<strlen(name); ++a) {
 194                 if (name[a] == '@') {
 195                         if (CtdlHostAlias(&name[a+1]) == hostalias_localhost) {
 196                                 name[a] = 0;
 197                                 syslog(LOG_INFO, "Changed to <%s>\n", name);
 198                         }
 199                 }
 200         }
 201
 202         /* determine local or remote type, see citadel.h */
 203         at = haschar(name, '@');
 204         if (at == 0) return(MES_LOCAL);         /* no @'s - local address */
 205         if (at > 1) return(MES_ERROR);          /* >1 @'s - invalid address */
 206         remove_any_whitespace_to_the_left_or_right_of_at_symbol(name);
 207
 208         /* figure out the delivery mode */
 209         extract_token(node, name, 1, '@', sizeof node);
 210
 211         /* If there are one or more dots in the nodename, we assume that it
 212          * is an FQDN and will attempt SMTP delivery to the Internet.
 213          */
 214         if (haschar(node, '.') > 0) {
 215                 return(MES_INTERNET);
 216         }
 217
 218         /* Otherwise we look in the IGnet maps for a valid Citadel node.
 219          * Try directly-connected nodes first...
 220          */
 221         ignetcfg = CtdlGetSysConfig(IGNETCFG);
 222         for (i=0; i<num_tokens(ignetcfg, '\n'); ++i) {
 223                 extract_token(buf, ignetcfg, i, '\n', sizeof buf);
 224                 extract_token(testnode, buf, 0, '|', sizeof testnode);
 225                 if (!strcasecmp(node, testnode)) {
 226                         free(ignetcfg);
 227                         return(MES_IGNET);
 228                 }
 229         }
 230         free(ignetcfg);
 231
 232         /*
 233          * Then try nodes that are two or more hops away.
 234          */
 235         ignetmap = CtdlGetSysConfig(IGNETMAP);
 236         for (i=0; i<num_tokens(ignetmap, '\n'); ++i) {
 237                 extract_token(buf, ignetmap, i, '\n', sizeof buf);
 238                 extract_token(testnode, buf, 0, '|', sizeof testnode);
 239                 if (!strcasecmp(node, testnode)) {
 240                         free(ignetmap);
 241                         return(MES_IGNET);
 242                 }
 243         }
 244         free(ignetmap);
 245
 246         /* If we get to this point it's an invalid node name */
 247         return (MES_ERROR);
 248 }
 249
 250
 251 /*
 252  * Back end for the MSGS command: output message number only.
 253  */
 254 void simple_listing(long msgnum, void *userdata)
 255 {
 256         cprintf("%ld\n", msgnum);
 257 }
 258
 259
 260
 261 /*
 262  * Back end for the MSGS command: output header summary.
 263  */
 264 void headers_listing(long msgnum, void *userdata)
 265 {
 266         struct CtdlMessage *msg;
 267
 268         msg = CtdlFetchMessage(msgnum, 0);
 269         if (msg == NULL) {
 270                 cprintf("%ld|0|||||\n", msgnum);
 271                 return;
 272         }
 273
 274         cprintf("%ld|%s|%s|%s|%s|%s|\n",
 275                 msgnum,
 276                 (msg->cm_fields['T'] ? msg->cm_fields['T'] : "0"),
 277                 (msg->cm_fields['A'] ? msg->cm_fields['A'] : ""),
 278                 (msg->cm_fields['N'] ? msg->cm_fields['N'] : ""),
 279                 (msg->cm_fields['F'] ? msg->cm_fields['F'] : ""),
 280                 (msg->cm_fields['U'] ? msg->cm_fields['U'] : "")
 281         );
 282         CtdlFreeMessage(msg);
 283 }
 284
 285 /*
 286  * Back end for the MSGS command: output EUID header.
 287  */
 288 void headers_euid(long msgnum, void *userdata)
 289 {
 290         struct CtdlMessage *msg;
 291
 292         msg = CtdlFetchMessage(msgnum, 0);
 293         if (msg == NULL) {
 294                 cprintf("%ld||\n", msgnum);
 295                 return;
 296         }
 297
 298         cprintf("%ld|%s|%s\n",
 299                 msgnum,
 300                 (msg->cm_fields['E'] ? msg->cm_fields['E'] : ""),
 301                 (msg->cm_fields['T'] ? msg->cm_fields['T'] : "0"));
 302         CtdlFreeMessage(msg);
 303 }
 304
 305
 306
 307
 308
 309 /* Determine if a given message matches the fields in a message template.
 310  * Return 0 for a successful match.
 311  */
 312 int CtdlMsgCmp(struct CtdlMessage *msg, struct CtdlMessage *template) {
 313         int i;
 314
 315         /* If there aren't any fields in the template, all messages will
 316          * match.
 317          */
 318         if (template == NULL) return(0);
 319
 320         /* Null messages are bogus. */
 321         if (msg == NULL) return(1);
 322
 323         for (i='A'; i<='Z'; ++i) {
 324                 if (template->cm_fields[i] != NULL) {
 325                         if (msg->cm_fields[i] == NULL) {
 326                                 /* Considered equal if temmplate is empty string */
 327                                 if (IsEmptyStr(template->cm_fields[i])) continue;
 328                                 return 1;
 329                         }
 330                         if (strcasecmp(msg->cm_fields[i],
 331                                 template->cm_fields[i])) return 1;
 332                 }
 333         }
 334
 335         /* All compares succeeded: we have a match! */
 336         return 0;
 337 }
 338
 339
 340
 341 /*
 342  * Retrieve the "seen" message list for the current room.
 343  */
 344 void CtdlGetSeen(char *buf, int which_set) {
 345         visit vbuf;
 346
 347         /* Learn about the user and room in question */
 348         CtdlGetRelationship(&vbuf, &CC->user, &CC->room);
 349
 350         if (which_set == ctdlsetseen_seen)
 351                 safestrncpy(buf, vbuf.v_seen, SIZ);
 352         if (which_set == ctdlsetseen_answered)
 353                 safestrncpy(buf, vbuf.v_answered, SIZ);
 354 }
 355
 356
 357
 358 /*
 359  * Manipulate the "seen msgs" string (or other message set strings)
 360  */
 361 void CtdlSetSeen(long *target_msgnums, int num_target_msgnums,
 362                 int target_setting, int which_set,
 363                 struct ctdluser *which_user, struct ctdlroom *which_room) {
 364         struct cdbdata *cdbfr;
 365         int i, k;
 366         int is_seen = 0;
 367         int was_seen = 0;
 368         long lo = (-1L);
 369         long hi = (-1L);
 370         visit vbuf;
 371         long *msglist;
 372         int num_msgs = 0;
 373         StrBuf *vset;
 374         StrBuf *setstr;
 375         StrBuf *lostr;
 376         StrBuf *histr;
 377         const char *pvset;
 378         char *is_set;   /* actually an array of booleans */
 379
 380         /* Don't bother doing *anything* if we were passed a list of zero messages */
 381         if (num_target_msgnums < 1) {
 382                 return;
 383         }
 384
 385         /* If no room was specified, we go with the current room. */
 386         if (!which_room) {
 387                 which_room = &CC->room;
 388         }
 389
 390         /* If no user was specified, we go with the current user. */
 391         if (!which_user) {
 392                 which_user = &CC->user;
 393         }
 394
 395         syslog(LOG_DEBUG, "CtdlSetSeen(%d msgs starting with %ld, %s, %d) in <%s>\n",
 396                 num_target_msgnums, target_msgnums[0],
 397                 (target_setting ? "SET" : "CLEAR"),
 398                 which_set,
 399                 which_room->QRname);
 400
 401         /* Learn about the user and room in question */
 402         CtdlGetRelationship(&vbuf, which_user, which_room);
 403
 404         /* Load the message list */
 405         cdbfr = cdb_fetch(CDB_MSGLISTS, &which_room->QRnumber, sizeof(long));
 406         if (cdbfr != NULL) {
 407                 msglist = (long *) cdbfr->ptr;
 408                 cdbfr->ptr = NULL;      /* CtdlSetSeen() now owns this memory */
 409                 num_msgs = cdbfr->len / sizeof(long);
 410                 cdb_free(cdbfr);
 411         } else {
 412                 return; /* No messages at all?  No further action. */
 413         }
 414
 415         is_set = malloc(num_msgs * sizeof(char));
 416         memset(is_set, 0, (num_msgs * sizeof(char)) );
 417
 418         /* Decide which message set we're manipulating */
 419         switch(which_set) {
 420         case ctdlsetseen_seen:
 421                 vset = NewStrBufPlain(vbuf.v_seen, -1);
 422                 break;
 423         case ctdlsetseen_answered:
 424                 vset = NewStrBufPlain(vbuf.v_answered, -1);
 425                 break;
 426         default:
 427                 vset = NewStrBuf();
 428         }
 429
 430
 431 #if 0   /* This is a special diagnostic section.  Do not allow it to run during normal operation. */
 432         syslog(LOG_DEBUG, "There are %d messages in the room.\n", num_msgs);
 433         for (i=0; i<num_msgs; ++i) {
 434                 if ((i > 0) && (msglist[i] <= msglist[i-1])) abort();
 435         }
 436         syslog(LOG_DEBUG, "We are twiddling %d of them.\n", num_target_msgnums);
 437         for (k=0; k<num_target_msgnums; ++k) {
 438                 if ((k > 0) && (target_msgnums[k] <= target_msgnums[k-1])) abort();
 439         }
 440 #endif
 441
 442         syslog(LOG_DEBUG, "before update: %s\n", ChrPtr(vset));
 443
 444         /* Translate the existing sequence set into an array of booleans */
 445         setstr = NewStrBuf();
 446         lostr = NewStrBuf();
 447         histr = NewStrBuf();
 448         pvset = NULL;
 449         while (StrBufExtract_NextToken(setstr, vset, &pvset, ',') >= 0) {
 450
 451                 StrBufExtract_token(lostr, setstr, 0, ':');
 452                 if (StrBufNum_tokens(setstr, ':') >= 2) {
 453                         StrBufExtract_token(histr, setstr, 1, ':');
 454                 }
 455                 else {
 456                         FlushStrBuf(histr);
 457                         StrBufAppendBuf(histr, lostr, 0);
 458                 }
 459                 lo = StrTol(lostr);
 460                 if (!strcmp(ChrPtr(histr), "*")) {
 461                         hi = LONG_MAX;
 462                 }
 463                 else {
 464                         hi = StrTol(histr);
 465                 }
 466
 467                 for (i = 0; i < num_msgs; ++i) {
 468                         if ((msglist[i] >= lo) && (msglist[i] <= hi)) {
 469                                 is_set[i] = 1;
 470                         }
 471                 }
 472         }
 473         FreeStrBuf(&setstr);
 474         FreeStrBuf(&lostr);
 475         FreeStrBuf(&histr);
 476
 477
 478         /* Now translate the array of booleans back into a sequence set */
 479         FlushStrBuf(vset);
 480         was_seen = 0;
 481         lo = (-1);
 482         hi = (-1);
 483
 484         for (i=0; i<num_msgs; ++i) {
 485                 is_seen = is_set[i];
 486
 487                 /* Apply changes */
 488                 for (k=0; k<num_target_msgnums; ++k) {
 489                         if (msglist[i] == target_msgnums[k]) {
 490                                 is_seen = target_setting;
 491                         }
 492                 }
 493
 494                 if ((was_seen == 0) && (is_seen == 1)) {
 495                         lo = msglist[i];
 496                 }
 497                 else if ((was_seen == 1) && (is_seen == 0)) {
 498                         hi = msglist[i-1];
 499
 500                         if (StrLength(vset) > 0) {
 501                                 StrBufAppendBufPlain(vset, HKEY(","), 0);
 502                         }
 503                         if (lo == hi) {
 504                                 StrBufAppendPrintf(vset, "%ld", hi);
 505                         }
 506                         else {
 507                                 StrBufAppendPrintf(vset, "%ld:%ld", lo, hi);
 508                         }
 509                 }
 510
 511                 if ((is_seen) && (i == num_msgs - 1)) {
 512                         if (StrLength(vset) > 0) {
 513                                 StrBufAppendBufPlain(vset, HKEY(","), 0);
 514                         }
 515                         if ((i==0) || (was_seen == 0)) {
 516                                 StrBufAppendPrintf(vset, "%ld", msglist[i]);
 517                         }
 518                         else {
 519                                 StrBufAppendPrintf(vset, "%ld:%ld", lo, msglist[i]);
 520                         }
 521                 }
 522
 523                 was_seen = is_seen;
 524         }
 525
 526         /*
 527          * We will have to stuff this string back into a 4096 byte buffer, so if it's
 528          * larger than that now, truncate it by removing tokens from the beginning.
 529          * The limit of 100 iterations is there to prevent an infinite loop in case
 530          * something unexpected happens.
 531          */
 532         int number_of_truncations = 0;
 533         while ( (StrLength(vset) > SIZ) && (number_of_truncations < 100) ) {
 534                 StrBufRemove_token(vset, 0, ',');
 535                 ++number_of_truncations;
 536         }
 537
 538         /*
 539          * If we're truncating the sequence set of messages marked with the 'seen' flag,
 540          * we want the earliest messages (the truncated ones) to be marked, not unmarked.
 541          * Otherwise messages at the beginning will suddenly appear to be 'unseen'.
 542          */
 543         if ( (which_set == ctdlsetseen_seen) && (number_of_truncations > 0) ) {
 544                 StrBuf *first_tok;
 545                 first_tok = NewStrBuf();
 546                 StrBufExtract_token(first_tok, vset, 0, ',');
 547                 StrBufRemove_token(vset, 0, ',');
 548
 549                 if (StrBufNum_tokens(first_tok, ':') > 1) {
 550                         StrBufRemove_token(first_tok, 0, ':');
 551                 }
 552
 553                 StrBuf *new_set;
 554                 new_set = NewStrBuf();
 555                 StrBufAppendBufPlain(new_set, HKEY("1:"), 0);
 556                 StrBufAppendBuf(new_set, first_tok, 0);
 557                 StrBufAppendBufPlain(new_set, HKEY(":"), 0);
 558                 StrBufAppendBuf(new_set, vset, 0);
 559
 560                 FreeStrBuf(&vset);
 561                 FreeStrBuf(&first_tok);
 562                 vset = new_set;
 563         }
 564
 565         syslog(LOG_DEBUG, " after update: %s\n", ChrPtr(vset));
 566
 567         /* Decide which message set we're manipulating */
 568         switch (which_set) {
 569                 case ctdlsetseen_seen:
 570                         safestrncpy(vbuf.v_seen, ChrPtr(vset), sizeof vbuf.v_seen);
 571                         break;
 572                 case ctdlsetseen_answered:
 573                         safestrncpy(vbuf.v_answered, ChrPtr(vset), sizeof vbuf.v_answered);
 574                         break;
 575         }
 576
 577         free(is_set);
 578         free(msglist);
 579         CtdlSetRelationship(&vbuf, which_user, which_room);
 580         FreeStrBuf(&vset);
 581 }
 582
 583
 584 /*
 585  * API function to perform an operation for each qualifying message in the
 586  * current room.  (Returns the number of messages processed.)
 587  */
 588 int CtdlForEachMessage(int mode, long ref, char *search_string,
 589                         char *content_type,
 590                         struct CtdlMessage *compare,
 591                         ForEachMsgCallback CallBack,
 592                         void *userdata)
 593 {
 594
 595         int a, i, j;
 596         visit vbuf;
 597         struct cdbdata *cdbfr;
 598         long *msglist = NULL;
 599         int num_msgs = 0;
 600         int num_processed = 0;
 601         long thismsg;
 602         struct MetaData smi;
 603         struct CtdlMessage *msg = NULL;
 604         int is_seen = 0;
 605         long lastold = 0L;
 606         int printed_lastold = 0;
 607         int num_search_msgs = 0;
 608         long *search_msgs = NULL;
 609         regex_t re;
 610         int need_to_free_re = 0;
 611         regmatch_t pm;
 612
 613         if ((content_type) && (!IsEmptyStr(content_type))) {
 614                 regcomp(&re, content_type, 0);
 615                 need_to_free_re = 1;
 616         }
 617
 618         /* Learn about the user and room in question */
 619         if (server_shutting_down) {
 620                 if (need_to_free_re) regfree(&re);
 621                 return -1;
 622         }
 623         CtdlGetUser(&CC->user, CC->curr_user);
 624
 625         if (server_shutting_down) {
 626                 if (need_to_free_re) regfree(&re);
 627                 return -1;
 628         }
 629         CtdlGetRelationship(&vbuf, &CC->user, &CC->room);
 630
 631         if (server_shutting_down) {
 632                 if (need_to_free_re) regfree(&re);
 633                 return -1;
 634         }
 635
 636         /* Load the message list */
 637         cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
 638         if (cdbfr == NULL) {
 639                 if (need_to_free_re) regfree(&re);
 640                 return 0;       /* No messages at all?  No further action. */
 641         }
 642
 643         msglist = (long *) cdbfr->ptr;
 644         num_msgs = cdbfr->len / sizeof(long);
 645
 646         cdbfr->ptr = NULL;      /* clear this so that cdb_free() doesn't free it */
 647         cdb_free(cdbfr);        /* we own this memory now */
 648
 649         /*
 650          * Now begin the traversal.
 651          */
 652         if (num_msgs > 0) for (a = 0; a < num_msgs; ++a) {
 653
 654                 /* If the caller is looking for a specific MIME type, filter
 655                  * out all messages which are not of the type requested.
 656                  */
 657                 if ((content_type != NULL) && (!IsEmptyStr(content_type))) {
 658
 659                         /* This call to GetMetaData() sits inside this loop
 660                          * so that we only do the extra database read per msg
 661                          * if we need to.  Doing the extra read all the time
 662                          * really kills the server.  If we ever need to use
 663                          * metadata for another search criterion, we need to
 664                          * move the read somewhere else -- but still be smart
 665                          * enough to only do the read if the caller has
 666                          * specified something that will need it.
 667                          */
 668                         if (server_shutting_down) {
 669                                 if (need_to_free_re) regfree(&re);
 670                                 free(msglist);
 671                                 return -1;
 672                         }
 673                         GetMetaData(&smi, msglist[a]);
 674
 675                         /* if (strcasecmp(smi.meta_content_type, content_type)) { old non-regex way */
 676                         if (regexec(&re, smi.meta_content_type, 1, &pm, 0) != 0) {
 677                                 msglist[a] = 0L;
 678                         }
 679                 }
 680         }
 681
 682         num_msgs = sort_msglist(msglist, num_msgs);
 683
 684         /* If a template was supplied, filter out the messages which
 685          * don't match.  (This could induce some delays!)
 686          */
 687         if (num_msgs > 0) {
 688                 if (compare != NULL) {
 689                         for (a = 0; a < num_msgs; ++a) {
 690                                 if (server_shutting_down) {
 691                                         if (need_to_free_re) regfree(&re);
 692                                         free(msglist);
 693                                         return -1;
 694                                 }
 695                                 msg = CtdlFetchMessage(msglist[a], 1);
 696                                 if (msg != NULL) {
 697                                         if (CtdlMsgCmp(msg, compare)) {
 698                                                 msglist[a] = 0L;
 699                                         }
 700                                         CtdlFreeMessage(msg);
 701                                 }
 702                         }
 703                 }
 704         }
 705
 706         /* If a search string was specified, get a message list from
 707          * the full text index and remove messages which aren't on both
 708          * lists.
 709          *
 710          * How this works:
 711          * Since the lists are sorted and strictly ascending, and the
 712          * output list is guaranteed to be shorter than or equal to the
 713          * input list, we overwrite the bottom of the input list.  This
 714          * eliminates the need to memmove big chunks of the list over and
 715          * over again.
 716          */
 717         if ( (num_msgs > 0) && (mode == MSGS_SEARCH) && (search_string) ) {
 718
 719                 /* Call search module via hook mechanism.
 720                  * NULL means use any search function available.
 721                  * otherwise replace with a char * to name of search routine
 722                  */
 723                 CtdlModuleDoSearch(&num_search_msgs, &search_msgs, search_string, "fulltext");
 724
 725                 if (num_search_msgs > 0) {
 726
 727                         int orig_num_msgs;
 728
 729                         orig_num_msgs = num_msgs;
 730                         num_msgs = 0;
 731                         for (i=0; i<orig_num_msgs; ++i) {
 732                                 for (j=0; j<num_search_msgs; ++j) {
 733                                         if (msglist[i] == search_msgs[j]) {
 734                                                 msglist[num_msgs++] = msglist[i];
 735                                         }
 736                                 }
 737                         }
 738                 }
 739                 else {
 740                         num_msgs = 0;   /* No messages qualify */
 741                 }
 742                 if (search_msgs != NULL) free(search_msgs);
 743
 744                 /* Now that we've purged messages which don't contain the search
 745                  * string, treat a MSGS_SEARCH just like a MSGS_ALL from this
 746                  * point on.
 747                  */
 748                 mode = MSGS_ALL;
 749         }
 750
 751         /*
 752          * Now iterate through the message list, according to the
 753          * criteria supplied by the caller.
 754          */
 755         if (num_msgs > 0)
 756                 for (a = 0; a < num_msgs; ++a) {
 757                         if (server_shutting_down) {
 758                                 if (need_to_free_re) regfree(&re);
 759                                 free(msglist);
 760                                 return num_processed;
 761                         }
 762                         thismsg = msglist[a];
 763                         if (mode == MSGS_ALL) {
 764                                 is_seen = 0;
 765                         }
 766                         else {
 767                                 is_seen = is_msg_in_sequence_set(
 768                                                         vbuf.v_seen, thismsg);
 769                                 if (is_seen) lastold = thismsg;
 770                         }
 771                         if ((thismsg > 0L)
 772                             && (
 773
 774                                        (mode == MSGS_ALL)
 775                                        || ((mode == MSGS_OLD) && (is_seen))
 776                                        || ((mode == MSGS_NEW) && (!is_seen))
 777                                        || ((mode == MSGS_LAST) && (a >= (num_msgs - ref)))
 778                                    || ((mode == MSGS_FIRST) && (a < ref))
 779                                 || ((mode == MSGS_GT) && (thismsg > ref))
 780                                 || ((mode == MSGS_LT) && (thismsg < ref))
 781                                 || ((mode == MSGS_EQ) && (thismsg == ref))
 782                             )
 783                             ) {
 784                                 if ((mode == MSGS_NEW) && (CC->user.flags & US_LASTOLD) && (lastold > 0L) && (printed_lastold == 0) && (!is_seen)) {
 785                                         if (CallBack)
 786                                                 CallBack(lastold, userdata);
 787                                         printed_lastold = 1;
 788                                         ++num_processed;
 789                                 }
 790                                 if (CallBack) CallBack(thismsg, userdata);
 791                                 ++num_processed;
 792                         }
 793                 }
 794         if (need_to_free_re) regfree(&re);
 795
 796         /*
 797          * We cache the most recent msglist in order to do security checks later
 798          */
 799         if (CC->client_socket > 0) {
 800                 if (CC->cached_msglist != NULL) {
 801                         free(CC->cached_msglist);
 802                 }
 803                 CC->cached_msglist = msglist;
 804                 CC->cached_num_msgs = num_msgs;
 805         }
 806         else {
 807                 free(msglist);
 808         }
 809
 810         return num_processed;
 811 }
 812
 813
 814
 815 /*
 816  * cmd_msgs()  -  get list of message #'s in this room
 817  *              implements the MSGS server command using CtdlForEachMessage()
 818  */
 819 void cmd_msgs(char *cmdbuf)
 820 {
 821         int mode = 0;
 822         char which[16];
 823         char buf[256];
 824         char tfield[256];
 825         char tvalue[256];
 826         int cm_ref = 0;
 827         int i;
 828         int with_template = 0;
 829         struct CtdlMessage *template = NULL;
 830         char search_string[1024];
 831         ForEachMsgCallback CallBack;
 832
 833         if (CtdlAccessCheck(ac_logged_in_or_guest)) return;
 834
 835         extract_token(which, cmdbuf, 0, '|', sizeof which);
 836         cm_ref = extract_int(cmdbuf, 1);
 837         extract_token(search_string, cmdbuf, 1, '|', sizeof search_string);
 838         with_template = extract_int(cmdbuf, 2);
 839         switch (extract_int(cmdbuf, 3))
 840         {
 841         default:
 842         case MSG_HDRS_BRIEF:
 843                 CallBack = simple_listing;
 844                 break;
 845         case MSG_HDRS_ALL:
 846                 CallBack = headers_listing;
 847                 break;
 848         case MSG_HDRS_EUID:
 849                 CallBack = headers_euid;
 850                 break;
 851         }
 852
 853         strcat(which, "   ");
 854         if (!strncasecmp(which, "OLD", 3))
 855                 mode = MSGS_OLD;
 856         else if (!strncasecmp(which, "NEW", 3))
 857                 mode = MSGS_NEW;
 858         else if (!strncasecmp(which, "FIRST", 5))
 859                 mode = MSGS_FIRST;
 860         else if (!strncasecmp(which, "LAST", 4))
 861                 mode = MSGS_LAST;
 862         else if (!strncasecmp(which, "GT", 2))
 863                 mode = MSGS_GT;
 864         else if (!strncasecmp(which, "LT", 2))
 865                 mode = MSGS_LT;
 866         else if (!strncasecmp(which, "SEARCH", 6))
 867                 mode = MSGS_SEARCH;
 868         else
 869                 mode = MSGS_ALL;
 870
 871         if ( (mode == MSGS_SEARCH) && (!config.c_enable_fulltext) ) {
 872                 cprintf("%d Full text index is not enabled on this server.\n",
 873                         ERROR + CMD_NOT_SUPPORTED);
 874                 return;
 875         }
 876
 877         if (with_template) {
 878                 unbuffer_output();
 879                 cprintf("%d Send template then receive message list\n",
 880                         START_CHAT_MODE);
 881                 template = (struct CtdlMessage *)
 882                         malloc(sizeof(struct CtdlMessage));
 883                 memset(template, 0, sizeof(struct CtdlMessage));
 884                 template->cm_magic = CTDLMESSAGE_MAGIC;
 885                 template->cm_anon_type = MES_NORMAL;
 886
 887                 while(client_getln(buf, sizeof buf) >= 0 && strcmp(buf,"000")) {
 888                         extract_token(tfield, buf, 0, '|', sizeof tfield);
 889                         extract_token(tvalue, buf, 1, '|', sizeof tvalue);
 890                         for (i='A'; i<='Z'; ++i) if (msgkeys[i]!=NULL) {
 891                                 if (!strcasecmp(tfield, msgkeys[i])) {
 892                                         template->cm_fields[i] =
 893                                                 strdup(tvalue);
 894                                 }
 895                         }
 896                 }
 897                 buffer_output();
 898         }
 899         else {
 900                 cprintf("%d  \n", LISTING_FOLLOWS);
 901         }
 902
 903         CtdlForEachMessage(mode,
 904                            ( (mode == MSGS_SEARCH) ? 0 : cm_ref ),
 905                            ( (mode == MSGS_SEARCH) ? search_string : NULL ),
 906                            NULL,
 907                            template,
 908                            CallBack,
 909                            NULL);
 910         if (template != NULL) CtdlFreeMessage(template);
 911         cprintf("000\n");
 912 }
 913
 914
 915
 916
 917 /*
 918  * help_subst()  -  support routine for help file viewer
 919  */
 920 void help_subst(char *strbuf, char *source, char *dest)
 921 {
 922         char workbuf[SIZ];
 923         int p;
 924
 925         while (p = pattern2(strbuf, source), (p >= 0)) {
 926                 strcpy(workbuf, &strbuf[p + strlen(source)]);
 927                 strcpy(&strbuf[p], dest);
 928                 strcat(strbuf, workbuf);
 929         }
 930 }
 931
 932
 933 void do_help_subst(char *buffer)
 934 {
 935         char buf2[16];
 936
 937         help_subst(buffer, "^nodename", config.c_nodename);
 938         help_subst(buffer, "^humannode", config.c_humannode);
 939         help_subst(buffer, "^fqdn", config.c_fqdn);
 940         help_subst(buffer, "^username", CC->user.fullname);
 941         snprintf(buf2, sizeof buf2, "%ld", CC->user.usernum);
 942         help_subst(buffer, "^usernum", buf2);
 943         help_subst(buffer, "^sysadm", config.c_sysadm);
 944         help_subst(buffer, "^variantname", CITADEL);
 945         snprintf(buf2, sizeof buf2, "%d", config.c_maxsessions);
 946         help_subst(buffer, "^maxsessions", buf2);
 947         help_subst(buffer, "^bbsdir", ctdl_message_dir);
 948 }
 949
 950
 951
 952 /*
 953  * memfmout()  -  Citadel text formatter and paginator.
 954  *           Although the original purpose of this routine was to format
 955  *           text to the reader's screen width, all we're really using it
 956  *           for here is to format text out to 80 columns before sending it
 957  *           to the client.  The client software may reformat it again.
 958  */
 959 void memfmout(
 960         char *mptr,             /* where are we going to get our text from? */
 961         const char *nl          /* string to terminate lines with */
 962 ) {
 963         int column = 0;
 964         unsigned char ch = 0;
 965         char outbuf[1024];
 966         int len = 0;
 967         int nllen = 0;
 968
 969         if (!mptr) return;
 970         nllen = strlen(nl);
 971         while (ch=*(mptr++), ch != 0) {
 972
 973                 if (ch == '\n') {
 974                         if (client_write(outbuf, len) == -1)
 975                         {
 976                                 syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
 977                                 return;
 978                         }
 979                         len = 0;
 980                         if (client_write(nl, nllen) == -1)
 981                         {
 982                                 syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
 983                                 return;
 984                         }
 985                         column = 0;
 986                 }
 987                 else if (ch == '\r') {
 988                         /* Ignore carriage returns.  Newlines are always LF or CRLF but never CR. */
 989                 }
 990                 else if (isspace(ch)) {
 991                         if (column > 72) {              /* Beyond 72 columns, break on the next space */
 992                                 if (client_write(outbuf, len) == -1)
 993                                 {
 994                                         syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
 995                                         return;
 996                                 }
 997                                 len = 0;
 998                                 if (client_write(nl, nllen) == -1)
 999                                 {
1000                                         syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1001                                         return;
1002                                 }
1003                                 column = 0;
1004                         }
1005                         else {
1006                                 outbuf[len++] = ch;
1007                                 ++column;
1008                         }
1009                 }
1010                 else {
1011                         outbuf[len++] = ch;
1012                         ++column;
1013                         if (column > 1000) {            /* Beyond 1000 columns, break anywhere */
1014                                 if (client_write(outbuf, len) == -1)
1015                                 {
1016                                         syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1017                                         return;
1018                                 }
1019                                 len = 0;
1020                                 if (client_write(nl, nllen) == -1)
1021                                 {
1022                                         syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1023                                         return;
1024                                 }
1025                                 column = 0;
1026                         }
1027                 }
1028         }
1029         if (len) {
1030                 if (client_write(outbuf, len) == -1)
1031                 {
1032                         syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1033                         return;
1034                 }
1035                 len = 0;
1036                 client_write(nl, nllen);
1037                 column = 0;
1038         }
1039 }
1040
1041
1042
1043 /*
1044  * Callback function for mime parser that simply lists the part
1045  */
1046 void list_this_part(char *name, char *filename, char *partnum, char *disp,
1047                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1048                     char *cbid, void *cbuserdata)
1049 {
1050         struct ma_info *ma;
1051
1052         ma = (struct ma_info *)cbuserdata;
1053         if (ma->is_ma == 0) {
1054                 cprintf("part=%s|%s|%s|%s|%s|%ld|%s|%s\n",
1055                         name,
1056                         filename,
1057                         partnum,
1058                         disp,
1059                         cbtype,
1060                         (long)length,
1061                         cbid,
1062                         cbcharset);
1063         }
1064 }
1065
1066 /*
1067  * Callback function for multipart prefix
1068  */
1069 void list_this_pref(char *name, char *filename, char *partnum, char *disp,
1070                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1071                     char *cbid, void *cbuserdata)
1072 {
1073         struct ma_info *ma;
1074
1075         ma = (struct ma_info *)cbuserdata;
1076         if (!strcasecmp(cbtype, "multipart/alternative")) {
1077                 ++ma->is_ma;
1078         }
1079
1080         if (ma->is_ma == 0) {
1081                 cprintf("pref=%s|%s\n", partnum, cbtype);
1082         }
1083 }
1084
1085 /*
1086  * Callback function for multipart sufffix
1087  */
1088 void list_this_suff(char *name, char *filename, char *partnum, char *disp,
1089                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1090                     char *cbid, void *cbuserdata)
1091 {
1092         struct ma_info *ma;
1093
1094         ma = (struct ma_info *)cbuserdata;
1095         if (ma->is_ma == 0) {
1096                 cprintf("suff=%s|%s\n", partnum, cbtype);
1097         }
1098         if (!strcasecmp(cbtype, "multipart/alternative")) {
1099                 --ma->is_ma;
1100         }
1101 }
1102
1103
1104 /*
1105  * Callback function for mime parser that opens a section for downloading
1106  */
1107 void mime_download(char *name, char *filename, char *partnum, char *disp,
1108                    void *content, char *cbtype, char *cbcharset, size_t length,
1109                    char *encoding, char *cbid, void *cbuserdata)
1110 {
1111         int rv = 0;
1112         CitContext *CCC = MyContext();
1113
1114         /* Silently go away if there's already a download open. */
1115         if (CCC->download_fp != NULL)
1116                 return;
1117
1118         if (
1119                 (!IsEmptyStr(partnum) && (!strcasecmp(CCC->download_desired_section, partnum)))
1120         ||      (!IsEmptyStr(cbid) && (!strcasecmp(CCC->download_desired_section, cbid)))
1121         ) {
1122                 CCC->download_fp = tmpfile();
1123                 if (CCC->download_fp == NULL) {
1124                         syslog(LOG_EMERG, "mime_download(): Couldn't write: %s\n",
1125                                strerror(errno));
1126                         cprintf("%d cannot open temporary file: %s\n",
1127                                 ERROR + INTERNAL_ERROR, strerror(errno));
1128                         return;
1129                 }
1130
1131                 rv = fwrite(content, length, 1, CC->download_fp);
1132                 if (rv <= 0) {
1133                         syslog(LOG_EMERG, "mime_download(): Couldn't write: %s\n",
1134                                strerror(errno));
1135                         cprintf("%d unable to write tempfile.\n",
1136                                 ERROR + TOO_BIG);
1137                         fclose(CCC->download_fp);
1138                         CCC->download_fp = NULL;
1139                         return;
1140                 }
1141                 fflush(CCC->download_fp);
1142                 rewind(CCC->download_fp);
1143
1144                 OpenCmdResult(filename, cbtype);
1145         }
1146 }
1147
1148
1149
1150 /*
1151  * Callback function for mime parser that outputs a section all at once.
1152  * We can specify the desired section by part number *or* content-id.
1153  */
1154 void mime_spew_section(char *name, char *filename, char *partnum, char *disp,
1155                    void *content, char *cbtype, char *cbcharset, size_t length,
1156                    char *encoding, char *cbid, void *cbuserdata)
1157 {
1158         int *found_it = (int *)cbuserdata;
1159
1160         if (
1161                 (!IsEmptyStr(partnum) && (!strcasecmp(CC->download_desired_section, partnum)))
1162         ||      (!IsEmptyStr(cbid) && (!strcasecmp(CC->download_desired_section, cbid)))
1163         ) {
1164                 *found_it = 1;
1165                 cprintf("%d %d|-1|%s|%s|%s\n",
1166                         BINARY_FOLLOWS,
1167                         (int)length,
1168                         filename,
1169                         cbtype,
1170                         cbcharset
1171                 );
1172                 client_write(content, length);
1173         }
1174 }
1175
1176
1177 /*
1178  * Load a message from disk into memory.
1179  * This is used by CtdlOutputMsg() and other fetch functions.
1180  *
1181  * NOTE: Caller is responsible for freeing the returned CtdlMessage struct
1182  *       using the CtdlMessageFree() function.
1183  */
1184 struct CtdlMessage *CtdlFetchMessage(long msgnum, int with_body)
1185 {
1186         struct cdbdata *dmsgtext;
1187         struct CtdlMessage *ret = NULL;
1188         char *mptr;
1189         char *upper_bound;
1190         cit_uint8_t ch;
1191         cit_uint8_t field_header;
1192
1193         syslog(LOG_DEBUG, "CtdlFetchMessage(%ld, %d)\n", msgnum, with_body);
1194         dmsgtext = cdb_fetch(CDB_MSGMAIN, &msgnum, sizeof(long));
1195         if (dmsgtext == NULL) {
1196                 return NULL;
1197         }
1198         mptr = dmsgtext->ptr;
1199         upper_bound = mptr + dmsgtext->len;
1200
1201         /* Parse the three bytes that begin EVERY message on disk.
1202          * The first is always 0xFF, the on-disk magic number.
1203          * The second is the anonymous/public type byte.
1204          * The third is the format type byte (vari, fixed, or MIME).
1205          */
1206         ch = *mptr++;
1207         if (ch != 255) {
1208                 syslog(LOG_ERR, "Message %ld appears to be corrupted.\n", msgnum);
1209                 cdb_free(dmsgtext);
1210                 return NULL;
1211         }
1212         ret = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
1213         memset(ret, 0, sizeof(struct CtdlMessage));
1214
1215         ret->cm_magic = CTDLMESSAGE_MAGIC;
1216         ret->cm_anon_type = *mptr++;    /* Anon type byte */
1217         ret->cm_format_type = *mptr++;  /* Format type byte */
1218
1219         /*
1220          * The rest is zero or more arbitrary fields.  Load them in.
1221          * We're done when we encounter either a zero-length field or
1222          * have just processed the 'M' (message text) field.
1223          */
1224         do {
1225                 if (mptr >= upper_bound) {
1226                         break;
1227                 }
1228                 field_header = *mptr++;
1229                 ret->cm_fields[field_header] = strdup(mptr);
1230
1231                 while (*mptr++ != 0);   /* advance to next field */
1232
1233         } while ((mptr < upper_bound) && (field_header != 'M'));
1234
1235         cdb_free(dmsgtext);
1236
1237         /* Always make sure there's something in the msg text field.  If
1238          * it's NULL, the message text is most likely stored separately,
1239          * so go ahead and fetch that.  Failing that, just set a dummy
1240          * body so other code doesn't barf.
1241          */
1242         if ( (ret->cm_fields['M'] == NULL) && (with_body) ) {
1243                 dmsgtext = cdb_fetch(CDB_BIGMSGS, &msgnum, sizeof(long));
1244                 if (dmsgtext != NULL) {
1245                         ret->cm_fields['M'] = dmsgtext->ptr;
1246                         dmsgtext->ptr = NULL;
1247                         cdb_free(dmsgtext);
1248                 }
1249         }
1250         if (ret->cm_fields['M'] == NULL) {
1251                 ret->cm_fields['M'] = strdup("\r\n\r\n (no text)\r\n");
1252         }
1253
1254         /* Perform "before read" hooks (aborting if any return nonzero) */
1255         if (PerformMessageHooks(ret, EVT_BEFOREREAD) > 0) {
1256                 CtdlFreeMessage(ret);
1257                 return NULL;
1258         }
1259
1260         return (ret);
1261 }
1262
1263
1264 /*
1265  * Returns 1 if the supplied pointer points to a valid Citadel message.
1266  * If the pointer is NULL or the magic number check fails, returns 0.
1267  */
1268 int is_valid_message(struct CtdlMessage *msg) {
1269         if (msg == NULL)
1270                 return 0;
1271         if ((msg->cm_magic) != CTDLMESSAGE_MAGIC) {
1272                 syslog(LOG_WARNING, "is_valid_message() -- self-check failed\n");
1273                 return 0;
1274         }
1275         return 1;
1276 }
1277
1278 void CtdlFreeMessageContents(struct CtdlMessage *msg)
1279 {
1280         int i;
1281
1282         for (i = 0; i < 256; ++i)
1283                 if (msg->cm_fields[i] != NULL) {
1284                         free(msg->cm_fields[i]);
1285                 }
1286
1287         msg->cm_magic = 0;      /* just in case */
1288 }
1289 /*
1290  * 'Destructor' for struct CtdlMessage
1291  */
1292 void CtdlFreeMessage(struct CtdlMessage *msg)
1293 {
1294         if (is_valid_message(msg) == 0)
1295         {
1296                 if (msg != NULL) free (msg);
1297                 return;
1298         }
1299         CtdlFreeMessageContents(msg);
1300         free(msg);
1301 }
1302
1303
1304 /*
1305  * Pre callback function for multipart/alternative
1306  *
1307  * NOTE: this differs from the standard behavior for a reason.  Normally when
1308  *       displaying multipart/alternative you want to show the _last_ usable
1309  *       format in the message.  Here we show the _first_ one, because it's
1310  *       usually text/plain.  Since this set of functions is designed for text
1311  *       output to non-MIME-aware clients, this is the desired behavior.
1312  *
1313  */
1314 void fixed_output_pre(char *name, char *filename, char *partnum, char *disp,
1315                 void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1316                 char *cbid, void *cbuserdata)
1317 {
1318         struct ma_info *ma;
1319
1320         ma = (struct ma_info *)cbuserdata;
1321         syslog(LOG_DEBUG, "fixed_output_pre() type=<%s>\n", cbtype);
1322         if (!strcasecmp(cbtype, "multipart/alternative")) {
1323                 ++ma->is_ma;
1324                 ma->did_print = 0;
1325         }
1326         if (!strcasecmp(cbtype, "message/rfc822")) {
1327                 ++ma->freeze;
1328         }
1329 }
1330
1331 /*
1332  * Post callback function for multipart/alternative
1333  */
1334 void fixed_output_post(char *name, char *filename, char *partnum, char *disp,
1335                 void *content, char *cbtype, char *cbcharset, size_t length,
1336                 char *encoding, char *cbid, void *cbuserdata)
1337 {
1338         struct ma_info *ma;
1339
1340         ma = (struct ma_info *)cbuserdata;
1341         syslog(LOG_DEBUG, "fixed_output_post() type=<%s>\n", cbtype);
1342         if (!strcasecmp(cbtype, "multipart/alternative")) {
1343                 --ma->is_ma;
1344                 ma->did_print = 0;
1345         }
1346         if (!strcasecmp(cbtype, "message/rfc822")) {
1347                 --ma->freeze;
1348         }
1349 }
1350
1351 /*
1352  * Inline callback function for mime parser that wants to display text
1353  */
1354 void fixed_output(char *name, char *filename, char *partnum, char *disp,
1355                 void *content, char *cbtype, char *cbcharset, size_t length,
1356                 char *encoding, char *cbid, void *cbuserdata)
1357 {
1358         char *ptr;
1359         char *wptr;
1360         size_t wlen;
1361         struct ma_info *ma;
1362
1363         ma = (struct ma_info *)cbuserdata;
1364
1365         syslog(LOG_DEBUG,
1366                 "fixed_output() part %s: %s (%s) (%ld bytes)\n",
1367                 partnum, filename, cbtype, (long)length);
1368
1369         /*
1370          * If we're in the middle of a multipart/alternative scope and
1371          * we've already printed another section, skip this one.
1372          */
1373         if ( (ma->is_ma) && (ma->did_print) ) {
1374                 syslog(LOG_DEBUG, "Skipping part %s (%s)\n", partnum, cbtype);
1375                 return;
1376         }
1377         ma->did_print = 1;
1378
1379         if ( (!strcasecmp(cbtype, "text/plain"))
1380            || (IsEmptyStr(cbtype)) ) {
1381                 wptr = content;
1382                 if (length > 0) {
1383                         client_write(wptr, length);
1384                         if (wptr[length-1] != '\n') {
1385                                 cprintf("\n");
1386                         }
1387                 }
1388                 return;
1389         }
1390
1391         if (!strcasecmp(cbtype, "text/html")) {
1392                 ptr = html_to_ascii(content, length, 80, 0);
1393                 wlen = strlen(ptr);
1394                 client_write(ptr, wlen);
1395                 if ((wlen > 0) && (ptr[wlen-1] != '\n')) {
1396                         cprintf("\n");
1397                 }
1398                 free(ptr);
1399                 return;
1400         }
1401
1402         if (ma->use_fo_hooks) {
1403                 if (PerformFixedOutputHooks(cbtype, content, length)) {
1404                 /* above function returns nonzero if it handled the part */
1405                         return;
1406                 }
1407         }
1408
1409         if (strncasecmp(cbtype, "multipart/", 10)) {
1410                 cprintf("Part %s: %s (%s) (%ld bytes)\r\n",
1411                         partnum, filename, cbtype, (long)length);
1412                 return;
1413         }
1414 }
1415
1416 /*
1417  * The client is elegant and sophisticated and wants to be choosy about
1418  * MIME content types, so figure out which multipart/alternative part
1419  * we're going to send.
1420  *
1421  * We use a system of weights.  When we find a part that matches one of the
1422  * MIME types we've declared as preferential, we can store it in ma->chosen_part
1423  * and then set ma->chosen_pref to that MIME type's position in our preference
1424  * list.  If we then hit another match, we only replace the first match if
1425  * the preference value is lower.
1426  */
1427 void choose_preferred(char *name, char *filename, char *partnum, char *disp,
1428                 void *content, char *cbtype, char *cbcharset, size_t length,
1429                 char *encoding, char *cbid, void *cbuserdata)
1430 {
1431         char buf[1024];
1432         int i;
1433         struct ma_info *ma;
1434
1435         ma = (struct ma_info *)cbuserdata;
1436
1437         // NOTE: REMOVING THIS CONDITIONAL FIXES BUG 220
1438         //       http://bugzilla.citadel.org/show_bug.cgi?id=220
1439         // I don't know if there are any side effects!  Please TEST TEST TEST
1440         //if (ma->is_ma > 0) {
1441
1442         for (i=0; i<num_tokens(CC->preferred_formats, '|'); ++i) {
1443                 extract_token(buf, CC->preferred_formats, i, '|', sizeof buf);
1444                 if ( (!strcasecmp(buf, cbtype)) && (!ma->freeze) ) {
1445                         if (i < ma->chosen_pref) {
1446                                 syslog(LOG_DEBUG, "Setting chosen part: <%s>\n", partnum);
1447                                 safestrncpy(ma->chosen_part, partnum, sizeof ma->chosen_part);
1448                                 ma->chosen_pref = i;
1449                         }
1450                 }
1451         }
1452 }
1453
1454 /*
1455  * Now that we've chosen our preferred part, output it.
1456  */
1457 void output_preferred(char *name,
1458                       char *filename,
1459                       char *partnum,
1460                       char *disp,
1461                       void *content,
1462                       char *cbtype,
1463                       char *cbcharset,
1464                       size_t length,
1465                       char *encoding,
1466                       char *cbid,
1467                       void *cbuserdata)
1468 {
1469         int i;
1470         char buf[128];
1471         int add_newline = 0;
1472         char *text_content;
1473         struct ma_info *ma;
1474         char *decoded = NULL;
1475         size_t bytes_decoded;
1476         int rc = 0;
1477
1478         ma = (struct ma_info *)cbuserdata;
1479
1480         /* This is not the MIME part you're looking for... */
1481         if (strcasecmp(partnum, ma->chosen_part)) return;
1482
1483         /* If the content-type of this part is in our preferred formats
1484          * list, we can simply output it verbatim.
1485          */
1486         for (i=0; i<num_tokens(CC->preferred_formats, '|'); ++i) {
1487                 extract_token(buf, CC->preferred_formats, i, '|', sizeof buf);
1488                 if (!strcasecmp(buf, cbtype)) {
1489                         /* Yeah!  Go!  W00t!! */
1490                         if (ma->dont_decode == 0)
1491                                 rc = mime_decode_now (content,
1492                                                       length,
1493                                                       encoding,
1494                                                       &decoded,
1495                                                       &bytes_decoded);
1496                         if (rc < 0)
1497                                 break; /* Give us the chance, maybe theres another one. */
1498
1499                         if (rc == 0) text_content = (char *)content;
1500                         else {
1501                                 text_content = decoded;
1502                                 length = bytes_decoded;
1503                         }
1504
1505                         if (text_content[length-1] != '\n') {
1506                                 ++add_newline;
1507                         }
1508                         cprintf("Content-type: %s", cbtype);
1509                         if (!IsEmptyStr(cbcharset)) {
1510                                 cprintf("; charset=%s", cbcharset);
1511                         }
1512                         cprintf("\nContent-length: %d\n",
1513                                 (int)(length + add_newline) );
1514                         if (!IsEmptyStr(encoding)) {
1515                                 cprintf("Content-transfer-encoding: %s\n", encoding);
1516                         }
1517                         else {
1518                                 cprintf("Content-transfer-encoding: 7bit\n");
1519                         }
1520                         cprintf("X-Citadel-MSG4-Partnum: %s\n", partnum);
1521                         cprintf("\n");
1522                         if (client_write(text_content, length) == -1)
1523                         {
1524                                 syslog(LOG_ERR, "output_preferred(): aborting due to write failure.\n");
1525                                 return;
1526                         }
1527                         if (add_newline) cprintf("\n");
1528                         if (decoded != NULL) free(decoded);
1529                         return;
1530                 }
1531         }
1532
1533         /* No translations required or possible: output as text/plain */
1534         cprintf("Content-type: text/plain\n\n");
1535         rc = 0;
1536         if (ma->dont_decode == 0)
1537                 rc = mime_decode_now (content,
1538                                       length,
1539                                       encoding,
1540                                       &decoded,
1541                                       &bytes_decoded);
1542         if (rc < 0)
1543                 return; /* Give us the chance, maybe theres another one. */
1544
1545         if (rc == 0) text_content = (char *)content;
1546         else {
1547                 text_content = decoded;
1548                 length = bytes_decoded;
1549         }
1550
1551         fixed_output(name, filename, partnum, disp, text_content, cbtype, cbcharset,
1552                         length, encoding, cbid, cbuserdata);
1553         if (decoded != NULL) free(decoded);
1554 }
1555
1556
1557 struct encapmsg {
1558         char desired_section[64];
1559         char *msg;
1560         size_t msglen;
1561 };
1562
1563
1564 /*
1565  * Callback function for
1566  */
1567 void extract_encapsulated_message(char *name, char *filename, char *partnum, char *disp,
1568                    void *content, char *cbtype, char *cbcharset, size_t length,
1569                    char *encoding, char *cbid, void *cbuserdata)
1570 {
1571         struct encapmsg *encap;
1572
1573         encap = (struct encapmsg *)cbuserdata;
1574
1575         /* Only proceed if this is the desired section... */
1576         if (!strcasecmp(encap->desired_section, partnum)) {
1577                 encap->msglen = length;
1578                 encap->msg = malloc(length + 2);
1579                 memcpy(encap->msg, content, length);
1580                 return;
1581         }
1582 }
1583
1584
1585 /*
1586  * Determine whether the specified message exists in the cached_msglist
1587  * (This is a security check)
1588  */
1589 int check_cached_msglist(long msgnum) {
1590
1591         /* cases in which we skip the check */
1592         if (!CC) return om_ok;                                          /* not a session */
1593         if (CC->client_socket <= 0) return om_ok;                       /* not a client session */
1594         if (CC->cached_msglist == NULL) return om_access_denied;        /* no msglist fetched */
1595         if (CC->cached_num_msgs == 0) return om_access_denied;          /* nothing to check */
1596
1597
1598         /* Do a binary search within the cached_msglist for the requested msgnum */
1599         int min = 0;
1600         int max = (CC->cached_num_msgs - 1);
1601
1602         while (max >= min) {
1603                 int middle = min + (max-min) / 2 ;
1604                 if (msgnum == CC->cached_msglist[middle]) {
1605                         return om_ok;
1606                 }
1607                 if (msgnum > CC->cached_msglist[middle]) {
1608                         min = middle + 1;
1609                 }
1610                 else {
1611                         max = middle - 1;
1612                 }
1613         }
1614
1615         return om_access_denied;
1616 }
1617
1618
1619 /*
1620  * Determine whether the currently logged in session has permission to read
1621  * messages in the current room.
1622  */
1623 int CtdlDoIHavePermissionToReadMessagesInThisRoom(void) {
1624         if (    (!(CC->logged_in))
1625                 && (!(CC->internal_pgm))
1626                 && (!config.c_guest_logins)
1627         ) {
1628                 return(om_not_logged_in);
1629         }
1630         return(om_ok);
1631 }
1632
1633
1634 /*
1635  * Get a message off disk.  (returns om_* values found in msgbase.h)
1636  *
1637  */
1638 int CtdlOutputMsg(long msg_num,         /* message number (local) to fetch */
1639                   int mode,             /* how would you like that message? */
1640                   int headers_only,     /* eschew the message body? */
1641                   int do_proto,         /* do Citadel protocol responses? */
1642                   int crlf,             /* Use CRLF newlines instead of LF? */
1643                   char *section,        /* NULL or a message/rfc822 section */
1644                   int flags             /* various flags; see msgbase.h */
1645 ) {
1646         struct CtdlMessage *TheMessage = NULL;
1647         int retcode = om_no_such_msg;
1648         struct encapmsg encap;
1649         int r;
1650
1651         syslog(LOG_DEBUG, "CtdlOutputMsg(msgnum=%ld, mode=%d, section=%s)\n",
1652                 msg_num, mode,
1653                 (section ? section : "<>")
1654         );
1655
1656         r = CtdlDoIHavePermissionToReadMessagesInThisRoom();
1657         if (r != om_ok) {
1658                 if (do_proto) {
1659                         if (r == om_not_logged_in) {
1660                                 cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN);
1661                         }
1662                         else {
1663                                 cprintf("%d An unknown error has occurred.\n", ERROR);
1664                         }
1665                 }
1666                 return(r);
1667         }
1668
1669         /*
1670          * Check to make sure the message is actually IN this room
1671          */
1672         r = check_cached_msglist(msg_num);
1673         if (r == om_access_denied) {
1674                 /* Not in the cache?  We get ONE shot to check it again. */
1675                 CtdlForEachMessage(MSGS_ALL, 0L, NULL, NULL, NULL, NULL, NULL);
1676                 r = check_cached_msglist(msg_num);
1677         }
1678         if (r != om_ok) {
1679                 syslog(LOG_DEBUG, "Security check fail: message %ld is not in %s\n",
1680                         msg_num, CC->room.QRname
1681                 );
1682                 if (do_proto) {
1683                         if (r == om_access_denied) {
1684                                 cprintf("%d message %ld was not found in this room\n",
1685                                         ERROR + HIGHER_ACCESS_REQUIRED,
1686                                         msg_num
1687                                 );
1688                         }
1689                 }
1690                 return(r);
1691         }
1692
1693         /*
1694          * Fetch the message from disk.  If we're in HEADERS_FAST mode,
1695          * request that we don't even bother loading the body into memory.
1696          */
1697         if (headers_only == HEADERS_FAST) {
1698                 TheMessage = CtdlFetchMessage(msg_num, 0);
1699         }
1700         else {
1701                 TheMessage = CtdlFetchMessage(msg_num, 1);
1702         }
1703
1704         if (TheMessage == NULL) {
1705                 if (do_proto) cprintf("%d Can't locate msg %ld on disk\n",
1706                         ERROR + MESSAGE_NOT_FOUND, msg_num);
1707                 return(om_no_such_msg);
1708         }
1709
1710         /* Here is the weird form of this command, to process only an
1711          * encapsulated message/rfc822 section.
1712          */
1713         if (section) if (!IsEmptyStr(section)) if (strcmp(section, "0")) {
1714                 memset(&encap, 0, sizeof encap);
1715                 safestrncpy(encap.desired_section, section, sizeof encap.desired_section);
1716                 mime_parser(TheMessage->cm_fields['M'],
1717                         NULL,
1718                         *extract_encapsulated_message,
1719                         NULL, NULL, (void *)&encap, 0
1720                 );
1721                 CtdlFreeMessage(TheMessage);
1722                 TheMessage = NULL;
1723
1724                 if (encap.msg) {
1725                         encap.msg[encap.msglen] = 0;
1726                         TheMessage = convert_internet_message(encap.msg);
1727                         encap.msg = NULL;       /* no free() here, TheMessage owns it now */
1728
1729                         /* Now we let it fall through to the bottom of this
1730                          * function, because TheMessage now contains the
1731                          * encapsulated message instead of the top-level
1732                          * message.  Isn't that neat?
1733                          */
1734
1735                 }
1736                 else {
1737                         if (do_proto) cprintf("%d msg %ld has no part %s\n",
1738                                 ERROR + MESSAGE_NOT_FOUND, msg_num, section);
1739                         retcode = om_no_such_msg;
1740                 }
1741
1742         }
1743
1744         /* Ok, output the message now */
1745         retcode = CtdlOutputPreLoadedMsg(TheMessage, mode, headers_only, do_proto, crlf, flags);
1746         CtdlFreeMessage(TheMessage);
1747
1748         return(retcode);
1749 }
1750
1751
1752 char *qp_encode_email_addrs(char *source)
1753 {
1754         char *user, *node, *name;
1755         const char headerStr[] = "=?UTF-8?Q?";
1756         char *Encoded;
1757         char *EncodedName;
1758         char *nPtr;
1759         int need_to_encode = 0;
1760         long SourceLen;
1761         long EncodedMaxLen;
1762         long nColons = 0;
1763         long *AddrPtr;
1764         long *AddrUtf8;
1765         long nAddrPtrMax = 50;
1766         long nmax;
1767         int InQuotes = 0;
1768         int i, n;
1769
1770         if (source == NULL) return source;
1771         if (IsEmptyStr(source)) return source;
1772         cit_backtrace();
1773         syslog(LOG_DEBUG, "qp_encode_email_addrs: [%s]\n", source);
1774
1775         AddrPtr = malloc (sizeof (long) * nAddrPtrMax);
1776         AddrUtf8 = malloc (sizeof (long) * nAddrPtrMax);
1777         memset(AddrUtf8, 0, sizeof (long) * nAddrPtrMax);
1778         *AddrPtr = 0;
1779         i = 0;
1780         while (!IsEmptyStr (&source[i])) {
1781                 if (nColons >= nAddrPtrMax){
1782                         long *ptr;
1783
1784                         ptr = (long *) malloc(sizeof (long) * nAddrPtrMax * 2);
1785                         memcpy (ptr, AddrPtr, sizeof (long) * nAddrPtrMax);
1786                         free (AddrPtr), AddrPtr = ptr;
1787
1788                         ptr = (long *) malloc(sizeof (long) * nAddrPtrMax * 2);
1789                         memset(&ptr[nAddrPtrMax], 0,
1790                                sizeof (long) * nAddrPtrMax);
1791
1792                         memcpy (ptr, AddrUtf8, sizeof (long) * nAddrPtrMax);
1793                         free (AddrUtf8), AddrUtf8 = ptr;
1794                         nAddrPtrMax *= 2;
1795                 }
1796                 if (((unsigned char) source[i] < 32) ||
1797                     ((unsigned char) source[i] > 126)) {
1798                         need_to_encode = 1;
1799                         AddrUtf8[nColons] = 1;
1800                 }
1801                 if (source[i] == '"')
1802                         InQuotes = !InQuotes;
1803                 if (!InQuotes && source[i] == ',') {
1804                         AddrPtr[nColons] = i;
1805                         nColons++;
1806                 }
1807                 i++;
1808         }
1809         if (need_to_encode == 0) {
1810                 free(AddrPtr);
1811                 free(AddrUtf8);
1812                 return source;
1813         }
1814
1815         SourceLen = i;
1816         EncodedMaxLen = nColons * (sizeof(headerStr) + 3) + SourceLen * 3;
1817         Encoded = (char*) malloc (EncodedMaxLen);
1818
1819         for (i = 0; i < nColons; i++)
1820                 source[AddrPtr[i]++] = '\0';
1821         /* TODO: if libidn, this might get larger*/
1822         user = malloc(SourceLen + 1);
1823         node = malloc(SourceLen + 1);
1824         name = malloc(SourceLen + 1);
1825
1826         nPtr = Encoded;
1827         *nPtr = '\0';
1828         for (i = 0; i < nColons && nPtr != NULL; i++) {
1829                 nmax = EncodedMaxLen - (nPtr - Encoded);
1830                 if (AddrUtf8[i]) {
1831                         process_rfc822_addr(&source[AddrPtr[i]],
1832                                             user,
1833                                             node,
1834                                             name);
1835                         /* TODO: libIDN here ! */
1836                         if (IsEmptyStr(name)) {
1837                                 n = snprintf(nPtr, nmax,
1838                                              (i==0)?"%s@%s" : ",%s@%s",
1839                                              user, node);
1840                         }
1841                         else {
1842                                 EncodedName = rfc2047encode(name, strlen(name));
1843                                 n = snprintf(nPtr, nmax,
1844                                              (i==0)?"%s <%s@%s>" : ",%s <%s@%s>",
1845                                              EncodedName, user, node);
1846                                 free(EncodedName);
1847                         }
1848                 }
1849                 else {
1850                         n = snprintf(nPtr, nmax,
1851                                      (i==0)?"%s" : ",%s",
1852                                      &source[AddrPtr[i]]);
1853                 }
1854                 if (n > 0 )
1855                         nPtr += n;
1856                 else {
1857                         char *ptr, *nnPtr;
1858                         ptr = (char*) malloc(EncodedMaxLen * 2);
1859                         memcpy(ptr, Encoded, EncodedMaxLen);
1860                         nnPtr = ptr + (nPtr - Encoded), nPtr = nnPtr;
1861                         free(Encoded), Encoded = ptr;
1862                         EncodedMaxLen *= 2;
1863                         i--; /* do it once more with properly lengthened buffer */
1864                 }
1865         }
1866         for (i = 0; i < nColons; i++)
1867                 source[--AddrPtr[i]] = ',';
1868
1869         free(user);
1870         free(node);
1871         free(name);
1872         free(AddrUtf8);
1873         free(AddrPtr);
1874         return Encoded;
1875 }
1876
1877
1878 /* If the last item in a list of recipients was truncated to a partial address,
1879  * remove it completely in order to avoid choking libSieve
1880  */
1881 void sanitize_truncated_recipient(char *str)
1882 {
1883         if (!str) return;
1884         if (num_tokens(str, ',') < 2) return;
1885
1886         int len = strlen(str);
1887         if (len < 900) return;
1888         if (len > 998) str[998] = 0;
1889
1890         char *cptr = strrchr(str, ',');
1891         if (!cptr) return;
1892
1893         char *lptr = strchr(cptr, '<');
1894         char *rptr = strchr(cptr, '>');
1895
1896         if ( (lptr) && (rptr) && (rptr > lptr) ) return;
1897
1898         *cptr = 0;
1899 }
1900
1901
1902 void OutputCtdlMsgHeaders(
1903         struct CtdlMessage *TheMessage,
1904         int do_proto)           /* do Citadel protocol responses? */
1905 {
1906         char allkeys[30];
1907         int i, k, n;
1908         int suppress_f = 0;
1909         char buf[SIZ];
1910         char display_name[256];
1911
1912         /* begin header processing loop for Citadel message format */
1913         safestrncpy(display_name, "<unknown>", sizeof display_name);
1914         if (TheMessage->cm_fields['A']) {
1915                 strcpy(buf, TheMessage->cm_fields['A']);
1916                 if (TheMessage->cm_anon_type == MES_ANONONLY) {
1917                         safestrncpy(display_name, "****", sizeof display_name);
1918                 }
1919                 else if (TheMessage->cm_anon_type == MES_ANONOPT) {
1920                         safestrncpy(display_name, "anonymous", sizeof display_name);
1921                 }
1922                 else {
1923                         safestrncpy(display_name, buf, sizeof display_name);
1924                 }
1925                 if ((is_room_aide())
1926                     && ((TheMessage->cm_anon_type == MES_ANONONLY)
1927                         || (TheMessage->cm_anon_type == MES_ANONOPT))) {
1928                         size_t tmp = strlen(display_name);
1929                         snprintf(&display_name[tmp],
1930                                  sizeof display_name - tmp,
1931                                  " [%s]", buf);
1932                 }
1933         }
1934
1935         /* Don't show Internet address for users on the
1936          * local Citadel network.
1937          */
1938         suppress_f = 0;
1939         if (TheMessage->cm_fields['N'] != NULL)
1940                 if (!IsEmptyStr(TheMessage->cm_fields['N']))
1941                         if (haschar(TheMessage->cm_fields['N'], '.') == 0) {
1942                                 suppress_f = 1;
1943                         }
1944
1945         /* Now spew the header fields in the order we like them. */
1946         n = safestrncpy(allkeys, FORDER, sizeof allkeys);
1947         for (i=0; i<n; ++i) {
1948                 k = (int) allkeys[i];
1949                 if (k != 'M') {
1950                         if ( (TheMessage->cm_fields[k] != NULL)
1951                              && (msgkeys[k] != NULL) ) {
1952                                 if ((k == 'V') || (k == 'R') || (k == 'Y')) {
1953                                         sanitize_truncated_recipient(TheMessage->cm_fields[k]);
1954                                 }
1955                                 if (k == 'A') {
1956                                         if (do_proto) cprintf("%s=%s\n",
1957                                                               msgkeys[k],
1958                                                               display_name);
1959                                 }
1960                                 else if ((k == 'F') && (suppress_f)) {
1961                                         /* do nothing */
1962                                 }
1963                                 /* Masquerade display name if needed */
1964                                 else {
1965                                         if (do_proto) cprintf("%s=%s\n",
1966                                                               msgkeys[k],
1967                                                               TheMessage->cm_fields[k]
1968                                                 );
1969                                 }
1970                         }
1971                 }
1972         }
1973
1974 }
1975
1976 void OutputRFC822MsgHeaders(
1977         struct CtdlMessage *TheMessage,
1978         int flags,              /* should the bessage be exported clean */
1979         const char *nl,
1980         char *mid, long sizeof_mid,
1981         char *suser, long sizeof_suser,
1982         char *luser, long sizeof_luser,
1983         char *fuser, long sizeof_fuser,
1984         char *snode, long sizeof_snode)
1985 {
1986         char datestamp[100];
1987         int subject_found = 0;
1988         char buf[SIZ];
1989         int i, j, k;
1990         char *mptr = NULL;
1991         char *mpptr = NULL;
1992         char *hptr;
1993
1994         for (i = 0; i < 256; ++i) {
1995                 if (TheMessage->cm_fields[i]) {
1996                         mptr = mpptr = TheMessage->cm_fields[i];
1997
1998                         if (i == 'A') {
1999                                 safestrncpy(luser, mptr, sizeof_luser);
2000                                 safestrncpy(suser, mptr, sizeof_suser);
2001                         }
2002                         else if (i == 'Y') {
2003                                 if ((flags & QP_EADDR) != 0) {
2004                                         mptr = qp_encode_email_addrs(mptr);
2005                                 }
2006                                 sanitize_truncated_recipient(mptr);
2007                                 cprintf("CC: %s%s", mptr, nl);
2008                         }
2009                         else if (i == 'P') {
2010                                 cprintf("Return-Path: %s%s", mptr, nl);
2011                         }
2012                         else if (i == 'L') {
2013                                 cprintf("List-ID: %s%s", mptr, nl);
2014                         }
2015                         else if (i == 'V') {
2016                                 if ((flags & QP_EADDR) != 0)
2017                                         mptr = qp_encode_email_addrs(mptr);
2018                                 hptr = mptr;
2019                                 while ((*hptr != '\0') && isspace(*hptr))
2020                                         hptr ++;
2021                                 if (!IsEmptyStr(hptr))
2022                                         cprintf("Envelope-To: %s%s", hptr, nl);
2023                         }
2024                         else if (i == 'U') {
2025                                 cprintf("Subject: %s%s", mptr, nl);
2026                                 subject_found = 1;
2027                         }
2028                         else if (i == 'I')
2029                                 safestrncpy(mid, mptr, sizeof_mid); /// TODO: detect @ here and copy @nodename in if not found.
2030                         else if (i == 'F')
2031                                 safestrncpy(fuser, mptr, sizeof_fuser);
2032                         /* else if (i == 'O')
2033                            cprintf("X-Citadel-Room: %s%s",
2034                            mptr, nl); */
2035                         else if (i == 'N')
2036                                 safestrncpy(snode, mptr, sizeof_snode);
2037                         else if (i == 'R')
2038                         {
2039                                 if (haschar(mptr, '@') == 0)
2040                                 {
2041                                         sanitize_truncated_recipient(mptr);
2042                                         cprintf("To: %s@%s", mptr, config.c_fqdn);
2043                                         cprintf("%s", nl);
2044                                 }
2045                                 else
2046                                 {
2047                                         if ((flags & QP_EADDR) != 0) {
2048                                                 mptr = qp_encode_email_addrs(mptr);
2049                                         }
2050                                         sanitize_truncated_recipient(mptr);
2051                                         cprintf("To: %s", mptr);
2052                                         cprintf("%s", nl);
2053                                 }
2054                         }
2055                         else if (i == 'T') {
2056                                 datestring(datestamp, sizeof datestamp,
2057                                            atol(mptr), DATESTRING_RFC822);
2058                                 cprintf("Date: %s%s", datestamp, nl);
2059                         }
2060                         else if (i == 'W') {
2061                                 cprintf("References: ");
2062                                 k = num_tokens(mptr, '|');
2063                                 for (j=0; j<k; ++j) {
2064                                         extract_token(buf, mptr, j, '|', sizeof buf);
2065                                         cprintf("<%s>", buf);
2066                                         if (j == (k-1)) {
2067                                                 cprintf("%s", nl);
2068                                         }
2069                                         else {
2070                                                 cprintf(" ");
2071                                         }
2072                                 }
2073                         }
2074                         else if (i == 'K') {
2075                                 hptr = mptr;
2076                                 while ((*hptr != '\0') && isspace(*hptr))
2077                                         hptr ++;
2078                                 if (!IsEmptyStr(hptr))
2079                                         cprintf("Reply-To: %s%s", mptr, nl);
2080                         }
2081                         if (mptr != mpptr)
2082                                 free (mptr);
2083                 }
2084         }
2085         if (subject_found == 0) {
2086                 cprintf("Subject: (no subject)%s", nl);
2087         }
2088 }
2089
2090
2091 void Dump_RFC822HeadersBody(
2092         struct CtdlMessage *TheMessage,
2093         int headers_only,       /* eschew the message body? */
2094         int flags,              /* should the bessage be exported clean? */
2095
2096         const char *nl)
2097 {
2098         cit_uint8_t prev_ch;
2099         int eoh = 0;
2100         const char *StartOfText = StrBufNOTNULL;
2101         char outbuf[1024];
2102         int outlen = 0;
2103         int nllen = strlen(nl);
2104         char *mptr;
2105
2106         mptr = TheMessage->cm_fields['M'];
2107
2108
2109         prev_ch = '\0';
2110         while (*mptr != '\0') {
2111                 if (*mptr == '\r') {
2112                         /* do nothing */
2113                 }
2114                 else {
2115                         if ((!eoh) &&
2116                             (*mptr == '\n'))
2117                         {
2118                                 eoh = (*(mptr+1) == '\r') && (*(mptr+2) == '\n');
2119                                 if (!eoh)
2120                                         eoh = *(mptr+1) == '\n';
2121                                 if (eoh)
2122                                 {
2123                                         StartOfText = mptr;
2124                                         StartOfText = strchr(StartOfText, '\n');
2125                                         StartOfText = strchr(StartOfText, '\n');
2126                                 }
2127                         }
2128                         if (((headers_only == HEADERS_NONE) && (mptr >= StartOfText)) ||
2129                             ((headers_only == HEADERS_ONLY) && (mptr < StartOfText)) ||
2130                             ((headers_only != HEADERS_NONE) &&
2131                              (headers_only != HEADERS_ONLY))
2132                                 ) {
2133                                 if (*mptr == '\n') {
2134                                         memcpy(&outbuf[outlen], nl, nllen);
2135                                         outlen += nllen;
2136                                         outbuf[outlen] = '\0';
2137                                 }
2138                                 else {
2139                                         outbuf[outlen++] = *mptr;
2140                                 }
2141                         }
2142                 }
2143                 if (flags & ESC_DOT)
2144                 {
2145                         if ((prev_ch == '\n') &&
2146                             (*mptr == '.') &&
2147                             ((*(mptr+1) == '\r') || (*(mptr+1) == '\n')))
2148                         {
2149                                 outbuf[outlen++] = '.';
2150                         }
2151                         prev_ch = *mptr;
2152                 }
2153                 ++mptr;
2154                 if (outlen > 1000) {
2155                         if (client_write(outbuf, outlen) == -1)
2156                         {
2157                                 syslog(LOG_ERR, "Dump_RFC822HeadersBody(): aborting due to write failure.\n");
2158                                 return;
2159                         }
2160                         outlen = 0;
2161                 }
2162         }
2163         if (outlen > 0) {
2164                 client_write(outbuf, outlen);
2165                 outlen = 0;
2166         }
2167 }
2168
2169
2170
2171 /* If the format type on disk is 1 (fixed-format), then we want
2172  * everything to be output completely literally ... regardless of
2173  * what message transfer format is in use.
2174  */
2175 void DumpFormatFixed(
2176         struct CtdlMessage *TheMessage,
2177         int mode,               /* how would you like that message? */
2178         const char *nl)
2179 {
2180         cit_uint8_t ch;
2181         char buf[SIZ];
2182         int buflen;
2183         int xlline = 0;
2184         int nllen = strlen (nl);
2185         char *mptr;
2186
2187         mptr = TheMessage->cm_fields['M'];
2188
2189         if (mode == MT_MIME) {
2190                 cprintf("Content-type: text/plain\n\n");
2191         }
2192         *buf = '\0';
2193         buflen = 0;
2194         while (ch = *mptr++, ch > 0) {
2195                 if (ch == '\n')
2196                         ch = '\r';
2197
2198                 if ((buflen > 250) && (!xlline)){
2199                         int tbuflen;
2200                         tbuflen = buflen;
2201
2202                         while ((buflen > 0) &&
2203                                (!isspace(buf[buflen])))
2204                                 buflen --;
2205                         if (buflen == 0) {
2206                                 xlline = 1;
2207                         }
2208                         else {
2209                                 mptr -= tbuflen - buflen;
2210                                 buf[buflen] = '\0';
2211                                 ch = '\r';
2212                         }
2213                 }
2214                 /* if we reach the outer bounds of our buffer,
2215                    abort without respect what whe purge. */
2216                 if (xlline &&
2217                     ((isspace(ch)) ||
2218                      (buflen > SIZ - nllen - 2)))
2219                         ch = '\r';
2220
2221                 if (ch == '\r') {
2222                         memcpy (&buf[buflen], nl, nllen);
2223                         buflen += nllen;
2224                         buf[buflen] = '\0';
2225
2226                         if (client_write(buf, buflen) == -1)
2227                         {
2228                                 syslog(LOG_ERR, "DumpFormatFixed(): aborting due to write failure.\n");
2229                                 return;
2230                         }
2231                         *buf = '\0';
2232                         buflen = 0;
2233                         xlline = 0;
2234                 } else {
2235                         buf[buflen] = ch;
2236                         buflen++;
2237                 }
2238         }
2239         buf[buflen] = '\0';
2240         if (!IsEmptyStr(buf))
2241                 cprintf("%s%s", buf, nl);
2242 }
2243
2244 /*
2245  * Get a message off disk.  (returns om_* values found in msgbase.h)
2246  */
2247 int CtdlOutputPreLoadedMsg(
2248                 struct CtdlMessage *TheMessage,
2249                 int mode,               /* how would you like that message? */
2250                 int headers_only,       /* eschew the message body? */
2251                 int do_proto,           /* do Citadel protocol responses? */
2252                 int crlf,               /* Use CRLF newlines instead of LF? */
2253                 int flags               /* should the bessage be exported clean? */
2254 ) {
2255         int i;
2256         char *mptr = NULL;
2257         const char *nl; /* newline string */
2258         struct ma_info ma;
2259
2260         /* Buffers needed for RFC822 translation.  These are all filled
2261          * using functions that are bounds-checked, and therefore we can
2262          * make them substantially smaller than SIZ.
2263          */
2264         char suser[100];
2265         char luser[100];
2266         char fuser[100];
2267         char snode[100];
2268         char mid[100];
2269
2270         syslog(LOG_DEBUG, "CtdlOutputPreLoadedMsg(TheMessage=%s, %d, %d, %d, %d\n",
2271                 ((TheMessage == NULL) ? "NULL" : "not null"),
2272                 mode, headers_only, do_proto, crlf);
2273
2274         strcpy(mid, "unknown");
2275         nl = (crlf ? "\r\n" : "\n");
2276
2277         if (!is_valid_message(TheMessage)) {
2278                 syslog(LOG_ERR,
2279                         "ERROR: invalid preloaded message for output\n");
2280                 cit_backtrace ();
2281                 return(om_no_such_msg);
2282         }
2283
2284         /* Suppress envelope recipients if required to avoid disclosing BCC addresses.
2285          * Pad it with spaces in order to avoid changing the RFC822 length of the message.
2286          */
2287         if ( (flags & SUPPRESS_ENV_TO) && (TheMessage->cm_fields['V'] != NULL) ) {
2288                 memset(TheMessage->cm_fields['V'], ' ', strlen(TheMessage->cm_fields['V']));
2289         }
2290
2291         /* Are we downloading a MIME component? */
2292         if (mode == MT_DOWNLOAD) {
2293                 if (TheMessage->cm_format_type != FMT_RFC822) {
2294                         if (do_proto)
2295                                 cprintf("%d This is not a MIME message.\n",
2296                                 ERROR + ILLEGAL_VALUE);
2297                 } else if (CC->download_fp != NULL) {
2298                         if (do_proto) cprintf(
2299                                 "%d You already have a download open.\n",
2300                                 ERROR + RESOURCE_BUSY);
2301                 } else {
2302                         /* Parse the message text component */
2303                         mptr = TheMessage->cm_fields['M'];
2304                         mime_parser(mptr, NULL, *mime_download, NULL, NULL, NULL, 0);
2305                         /* If there's no file open by this time, the requested
2306                          * section wasn't found, so print an error
2307                          */
2308                         if (CC->download_fp == NULL) {
2309                                 if (do_proto) cprintf(
2310                                         "%d Section %s not found.\n",
2311                                         ERROR + FILE_NOT_FOUND,
2312                                         CC->download_desired_section);
2313                         }
2314                 }
2315                 return((CC->download_fp != NULL) ? om_ok : om_mime_error);
2316         }
2317
2318         /* MT_SPEW_SECTION is like MT_DOWNLOAD except it outputs the whole MIME part
2319          * in a single server operation instead of opening a download file.
2320          */
2321         if (mode == MT_SPEW_SECTION) {
2322                 if (TheMessage->cm_format_type != FMT_RFC822) {
2323                         if (do_proto)
2324                                 cprintf("%d This is not a MIME message.\n",
2325                                 ERROR + ILLEGAL_VALUE);
2326                 } else {
2327                         /* Parse the message text component */
2328                         int found_it = 0;
2329
2330                         mptr = TheMessage->cm_fields['M'];
2331                         mime_parser(mptr, NULL, *mime_spew_section, NULL, NULL, (void *)&found_it, 0);
2332                         /* If section wasn't found, print an error
2333                          */
2334                         if (!found_it) {
2335                                 if (do_proto) cprintf(
2336                                         "%d Section %s not found.\n",
2337                                         ERROR + FILE_NOT_FOUND,
2338                                         CC->download_desired_section);
2339                         }
2340                 }
2341                 return((CC->download_fp != NULL) ? om_ok : om_mime_error);
2342         }
2343
2344         /* now for the user-mode message reading loops */
2345         if (do_proto) cprintf("%d msg:\n", LISTING_FOLLOWS);
2346
2347         /* Does the caller want to skip the headers? */
2348         if (headers_only == HEADERS_NONE) goto START_TEXT;
2349
2350         /* Tell the client which format type we're using. */
2351         if ( (mode == MT_CITADEL) && (do_proto) ) {
2352                 cprintf("type=%d\n", TheMessage->cm_format_type);
2353         }
2354
2355         /* nhdr=yes means that we're only displaying headers, no body */
2356         if ( (TheMessage->cm_anon_type == MES_ANONONLY)
2357            && ((mode == MT_CITADEL) || (mode == MT_MIME))
2358            && (do_proto)
2359            ) {
2360                 cprintf("nhdr=yes\n");
2361         }
2362
2363         if ((mode == MT_CITADEL) || (mode == MT_MIME))
2364                 OutputCtdlMsgHeaders(TheMessage, do_proto);
2365
2366
2367         /* begin header processing loop for RFC822 transfer format */
2368         strcpy(suser, "");
2369         strcpy(luser, "");
2370         strcpy(fuser, "");
2371         strcpy(snode, NODENAME);
2372         if (mode == MT_RFC822)
2373                 OutputRFC822MsgHeaders(
2374                         TheMessage,
2375                         flags,
2376                         nl,
2377                         mid, sizeof(mid),
2378                         suser, sizeof(suser),
2379                         luser, sizeof(luser),
2380                         fuser, sizeof(fuser),
2381                         snode, sizeof(snode)
2382                         );
2383
2384
2385         for (i=0; !IsEmptyStr(&suser[i]); ++i) {
2386                 suser[i] = tolower(suser[i]);
2387                 if (!isalnum(suser[i])) suser[i]='_';
2388         }
2389
2390         if (mode == MT_RFC822) {
2391                 if (!strcasecmp(snode, NODENAME)) {
2392                         safestrncpy(snode, FQDN, sizeof snode);
2393                 }
2394
2395                 /* Construct a fun message id */
2396                 cprintf("Message-ID: <%s", mid);/// todo: this possibly breaks threadding mails.
2397                 if (strchr(mid, '@')==NULL) {
2398                         cprintf("@%s", snode);
2399                 }
2400                 cprintf(">%s", nl);
2401
2402                 if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONONLY)) {
2403                         cprintf("From: \"----\" <x@x.org>%s", nl);
2404                 }
2405                 else if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONOPT)) {
2406                         cprintf("From: \"anonymous\" <x@x.org>%s", nl);
2407                 }
2408                 else if (!IsEmptyStr(fuser)) {
2409                         cprintf("From: \"%s\" <%s>%s", luser, fuser, nl);
2410                 }
2411                 else {
2412                         cprintf("From: \"%s\" <%s@%s>%s", luser, suser, snode, nl);
2413                 }
2414
2415                 /* Blank line signifying RFC822 end-of-headers */
2416                 if (TheMessage->cm_format_type != FMT_RFC822) {
2417                         cprintf("%s", nl);
2418                 }
2419         }
2420
2421         /* end header processing loop ... at this point, we're in the text */
2422 START_TEXT:
2423         if (headers_only == HEADERS_FAST) goto DONE;
2424
2425         /* Tell the client about the MIME parts in this message */
2426         if (TheMessage->cm_format_type == FMT_RFC822) {
2427                 if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
2428                         mptr = TheMessage->cm_fields['M'];
2429                         memset(&ma, 0, sizeof(struct ma_info));
2430                         mime_parser(mptr, NULL,
2431                                 (do_proto ? *list_this_part : NULL),
2432                                 (do_proto ? *list_this_pref : NULL),
2433                                 (do_proto ? *list_this_suff : NULL),
2434                                 (void *)&ma, 1);
2435                 }
2436                 else if (mode == MT_RFC822) {   /* unparsed RFC822 dump */
2437                         Dump_RFC822HeadersBody(
2438                                 TheMessage,
2439                                 headers_only,
2440                                 flags,
2441                                 nl);
2442                         goto DONE;
2443                 }
2444         }
2445
2446         if (headers_only == HEADERS_ONLY) {
2447                 goto DONE;
2448         }
2449
2450         /* signify start of msg text */
2451         if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
2452                 if (do_proto) cprintf("text\n");
2453         }
2454
2455         if (TheMessage->cm_format_type == FMT_FIXED)
2456                 DumpFormatFixed(
2457                         TheMessage,
2458                         mode,           /* how would you like that message? */
2459                         nl);
2460
2461         /* If the message on disk is format 0 (Citadel vari-format), we
2462          * output using the formatter at 80 columns.  This is the final output
2463          * form if the transfer format is RFC822, but if the transfer format
2464          * is Citadel proprietary, it'll still work, because the indentation
2465          * for new paragraphs is correct and the client will reformat the
2466          * message to the reader's screen width.
2467          */
2468         if (TheMessage->cm_format_type == FMT_CITADEL) {
2469                 mptr = TheMessage->cm_fields['M'];
2470
2471                 if (mode == MT_MIME) {
2472                         cprintf("Content-type: text/x-citadel-variformat\n\n");
2473                 }
2474                 memfmout(mptr, nl);
2475         }
2476
2477         /* If the message on disk is format 4 (MIME), we've gotta hand it
2478          * off to the MIME parser.  The client has already been told that
2479          * this message is format 1 (fixed format), so the callback function
2480          * we use will display those parts as-is.
2481          */
2482         if (TheMessage->cm_format_type == FMT_RFC822) {
2483                 memset(&ma, 0, sizeof(struct ma_info));
2484
2485                 if (mode == MT_MIME) {
2486                         ma.use_fo_hooks = 0;
2487                         strcpy(ma.chosen_part, "1");
2488                         ma.chosen_pref = 9999;
2489                         ma.dont_decode = CC->msg4_dont_decode;
2490                         mime_parser(mptr, NULL,
2491                                 *choose_preferred, *fixed_output_pre,
2492                                 *fixed_output_post, (void *)&ma, 1);
2493                         mime_parser(mptr, NULL,
2494                                 *output_preferred, NULL, NULL, (void *)&ma, 1);
2495                 }
2496                 else {
2497                         ma.use_fo_hooks = 1;
2498                         mime_parser(mptr, NULL,
2499                                 *fixed_output, *fixed_output_pre,
2500                                 *fixed_output_post, (void *)&ma, 0);
2501                 }
2502
2503         }
2504
2505 DONE:   /* now we're done */
2506         if (do_proto) cprintf("000\n");
2507         return(om_ok);
2508 }
2509
2510
2511 /*
2512  * display a message (mode 0 - Citadel proprietary)
2513  */
2514 void cmd_msg0(char *cmdbuf)
2515 {
2516         long msgid;
2517         int headers_only = HEADERS_ALL;
2518
2519         msgid = extract_long(cmdbuf, 0);
2520         headers_only = extract_int(cmdbuf, 1);
2521
2522         CtdlOutputMsg(msgid, MT_CITADEL, headers_only, 1, 0, NULL, 0);
2523         return;
2524 }
2525
2526
2527 /*
2528  * display a message (mode 2 - RFC822)
2529  */
2530 void cmd_msg2(char *cmdbuf)
2531 {
2532         long msgid;
2533         int headers_only = HEADERS_ALL;
2534
2535         msgid = extract_long(cmdbuf, 0);
2536         headers_only = extract_int(cmdbuf, 1);
2537
2538         CtdlOutputMsg(msgid, MT_RFC822, headers_only, 1, 1, NULL, 0);
2539 }
2540
2541
2542
2543 /*
2544  * display a message (mode 3 - IGnet raw format - internal programs only)
2545  */
2546 void cmd_msg3(char *cmdbuf)
2547 {
2548         long msgnum;
2549         struct CtdlMessage *msg = NULL;
2550         struct ser_ret smr;
2551
2552         if (CC->internal_pgm == 0) {
2553                 cprintf("%d This command is for internal programs only.\n",
2554                         ERROR + HIGHER_ACCESS_REQUIRED);
2555                 return;
2556         }
2557
2558         msgnum = extract_long(cmdbuf, 0);
2559         msg = CtdlFetchMessage(msgnum, 1);
2560         if (msg == NULL) {
2561                 cprintf("%d Message %ld not found.\n",
2562                         ERROR + MESSAGE_NOT_FOUND, msgnum);
2563                 return;
2564         }
2565
2566         serialize_message(&smr, msg);
2567         CtdlFreeMessage(msg);
2568
2569         if (smr.len == 0) {
2570                 cprintf("%d Unable to serialize message\n",
2571                         ERROR + INTERNAL_ERROR);
2572                 return;
2573         }
2574
2575         cprintf("%d %ld\n", BINARY_FOLLOWS, (long)smr.len);
2576         client_write((char *)smr.ser, (int)smr.len);
2577         free(smr.ser);
2578 }
2579
2580
2581
2582 /*
2583  * Display a message using MIME content types
2584  */
2585 void cmd_msg4(char *cmdbuf)
2586 {
2587         long msgid;
2588         char section[64];
2589
2590         msgid = extract_long(cmdbuf, 0);
2591         extract_token(section, cmdbuf, 1, '|', sizeof section);
2592         CtdlOutputMsg(msgid, MT_MIME, 0, 1, 0, (section[0] ? section : NULL) , 0);
2593 }
2594
2595
2596
2597 /*
2598  * Client tells us its preferred message format(s)
2599  */
2600 void cmd_msgp(char *cmdbuf)
2601 {
2602         if (!strcasecmp(cmdbuf, "dont_decode")) {
2603                 CC->msg4_dont_decode = 1;
2604                 cprintf("%d MSG4 will not pre-decode messages.\n", CIT_OK);
2605         }
2606         else {
2607                 safestrncpy(CC->preferred_formats, cmdbuf, sizeof(CC->preferred_formats));
2608                 cprintf("%d Preferred MIME formats have been set.\n", CIT_OK);
2609         }
2610 }
2611
2612
2613 /*
2614  * Open a component of a MIME message as a download file
2615  */
2616 void cmd_opna(char *cmdbuf)
2617 {
2618         long msgid;
2619         char desired_section[128];
2620
2621         msgid = extract_long(cmdbuf, 0);
2622         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2623         safestrncpy(CC->download_desired_section, desired_section,
2624                 sizeof CC->download_desired_section);
2625         CtdlOutputMsg(msgid, MT_DOWNLOAD, 0, 1, 1, NULL, 0);
2626 }
2627
2628
2629 /*
2630  * Open a component of a MIME message and transmit it all at once
2631  */
2632 void cmd_dlat(char *cmdbuf)
2633 {
2634         long msgid;
2635         char desired_section[128];
2636
2637         msgid = extract_long(cmdbuf, 0);
2638         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2639         safestrncpy(CC->download_desired_section, desired_section,
2640                 sizeof CC->download_desired_section);
2641         CtdlOutputMsg(msgid, MT_SPEW_SECTION, 0, 1, 1, NULL, 0);
2642 }
2643
2644
2645 /*
2646  * Save one or more message pointers into a specified room
2647  * (Returns 0 for success, nonzero for failure)
2648  * roomname may be NULL to use the current room
2649  *
2650  * Note that the 'supplied_msg' field may be set to NULL, in which case
2651  * the message will be fetched from disk, by number, if we need to perform
2652  * replication checks.  This adds an additional database read, so if the
2653  * caller already has the message in memory then it should be supplied.  (Obviously
2654  * this mode of operation only works if we're saving a single message.)
2655  */
2656 int CtdlSaveMsgPointersInRoom(char *roomname, long newmsgidlist[], int num_newmsgs,
2657                         int do_repl_check, struct CtdlMessage *supplied_msg, int suppress_refcount_adj
2658 ) {
2659         int i, j, unique;
2660         char hold_rm[ROOMNAMELEN];
2661         struct cdbdata *cdbfr;
2662         int num_msgs;
2663         long *msglist;
2664         long highest_msg = 0L;
2665
2666         long msgid = 0;
2667         struct CtdlMessage *msg = NULL;
2668
2669         long *msgs_to_be_merged = NULL;
2670         int num_msgs_to_be_merged = 0;
2671
2672         syslog(LOG_DEBUG,
2673                 "CtdlSaveMsgPointersInRoom(room=%s, num_msgs=%d, repl=%d, suppress_rca=%d)\n",
2674                 roomname, num_newmsgs, do_repl_check, suppress_refcount_adj
2675         );
2676
2677         strcpy(hold_rm, CC->room.QRname);
2678
2679         /* Sanity checks */
2680         if (newmsgidlist == NULL) return(ERROR + INTERNAL_ERROR);
2681         if (num_newmsgs < 1) return(ERROR + INTERNAL_ERROR);
2682         if (num_newmsgs > 1) supplied_msg = NULL;
2683
2684         /* Now the regular stuff */
2685         if (CtdlGetRoomLock(&CC->room,
2686            ((roomname != NULL) ? roomname : CC->room.QRname) )
2687            != 0) {
2688                 syslog(LOG_ERR, "No such room <%s>\n", roomname);
2689                 return(ERROR + ROOM_NOT_FOUND);
2690         }
2691
2692
2693         msgs_to_be_merged = malloc(sizeof(long) * num_newmsgs);
2694         num_msgs_to_be_merged = 0;
2695
2696
2697         cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
2698         if (cdbfr == NULL) {
2699                 msglist = NULL;
2700                 num_msgs = 0;
2701         } else {
2702                 msglist = (long *) cdbfr->ptr;
2703                 cdbfr->ptr = NULL;      /* CtdlSaveMsgPointerInRoom() now owns this memory */
2704                 num_msgs = cdbfr->len / sizeof(long);
2705                 cdb_free(cdbfr);
2706         }
2707
2708
2709         /* Create a list of msgid's which were supplied by the caller, but do
2710          * not already exist in the target room.  It is absolutely taboo to
2711          * have more than one reference to the same message in a room.
2712          */
2713         for (i=0; i<num_newmsgs; ++i) {
2714                 unique = 1;
2715                 if (num_msgs > 0) for (j=0; j<num_msgs; ++j) {
2716                         if (msglist[j] == newmsgidlist[i]) {
2717                                 unique = 0;
2718                         }
2719                 }
2720                 if (unique) {
2721                         msgs_to_be_merged[num_msgs_to_be_merged++] = newmsgidlist[i];
2722                 }
2723         }
2724
2725         syslog(LOG_DEBUG, "%d unique messages to be merged\n", num_msgs_to_be_merged);
2726
2727         /*
2728          * Now merge the new messages
2729          */
2730         msglist = realloc(msglist, (sizeof(long) * (num_msgs + num_msgs_to_be_merged)) );
2731         if (msglist == NULL) {
2732                 syslog(LOG_ALERT, "ERROR: can't realloc message list!\n");
2733         }
2734         memcpy(&msglist[num_msgs], msgs_to_be_merged, (sizeof(long) * num_msgs_to_be_merged) );
2735         num_msgs += num_msgs_to_be_merged;
2736
2737         /* Sort the message list, so all the msgid's are in order */
2738         num_msgs = sort_msglist(msglist, num_msgs);
2739
2740         /* Determine the highest message number */
2741         highest_msg = msglist[num_msgs - 1];
2742
2743         /* Write it back to disk. */
2744         cdb_store(CDB_MSGLISTS, &CC->room.QRnumber, (int)sizeof(long),
2745                   msglist, (int)(num_msgs * sizeof(long)));
2746
2747         /* Free up the memory we used. */
2748         free(msglist);
2749
2750         /* Update the highest-message pointer and unlock the room. */
2751         CC->room.QRhighest = highest_msg;
2752         CtdlPutRoomLock(&CC->room);
2753
2754         /* Perform replication checks if necessary */
2755         if ( (DoesThisRoomNeedEuidIndexing(&CC->room)) && (do_repl_check) ) {
2756                 syslog(LOG_DEBUG, "CtdlSaveMsgPointerInRoom() doing repl checks\n");
2757
2758                 for (i=0; i<num_msgs_to_be_merged; ++i) {
2759                         msgid = msgs_to_be_merged[i];
2760
2761                         if (supplied_msg != NULL) {
2762                                 msg = supplied_msg;
2763                         }
2764                         else {
2765                                 msg = CtdlFetchMessage(msgid, 0);
2766                         }
2767
2768                         if (msg != NULL) {
2769                                 ReplicationChecks(msg);
2770
2771                                 /* If the message has an Exclusive ID, index that... */
2772                                 if (msg->cm_fields['E'] != NULL) {
2773                                         index_message_by_euid(msg->cm_fields['E'], &CC->room, msgid);
2774                                 }
2775
2776                                 /* Free up the memory we may have allocated */
2777                                 if (msg != supplied_msg) {
2778                                         CtdlFreeMessage(msg);
2779                                 }
2780                         }
2781
2782                 }
2783         }
2784
2785         else {
2786                 syslog(LOG_DEBUG, "CtdlSaveMsgPointerInRoom() skips repl checks\n");
2787         }
2788
2789         /* Submit this room for processing by hooks */
2790         PerformRoomHooks(&CC->room);
2791
2792         /* Go back to the room we were in before we wandered here... */
2793         CtdlGetRoom(&CC->room, hold_rm);
2794
2795         /* Bump the reference count for all messages which were merged */
2796         if (!suppress_refcount_adj) {
2797                 AdjRefCountList(msgs_to_be_merged, num_msgs_to_be_merged, +1);
2798         }
2799
2800         /* Free up memory... */
2801         if (msgs_to_be_merged != NULL) {
2802                 free(msgs_to_be_merged);
2803         }
2804
2805         /* Return success. */
2806         return (0);
2807 }
2808
2809
2810 /*
2811  * This is the same as CtdlSaveMsgPointersInRoom() but it only accepts
2812  * a single message.
2813  */
2814 int CtdlSaveMsgPointerInRoom(char *roomname, long msgid,
2815                              int do_repl_check, struct CtdlMessage *supplied_msg)
2816 {
2817         return CtdlSaveMsgPointersInRoom(roomname, &msgid, 1, do_repl_check, supplied_msg, 0);
2818 }
2819
2820
2821
2822
2823 /*
2824  * Message base operation to save a new message to the message store
2825  * (returns new message number)
2826  *
2827  * This is the back end for CtdlSubmitMsg() and should not be directly
2828  * called by server-side modules.
2829  *
2830  */
2831 long send_message(struct CtdlMessage *msg) {
2832         long newmsgid;
2833         long retval;
2834         char msgidbuf[256];
2835         struct ser_ret smr;
2836         int is_bigmsg = 0;
2837         char *holdM = NULL;
2838
2839         /* Get a new message number */
2840         newmsgid = get_new_message_number();
2841         snprintf(msgidbuf, sizeof msgidbuf, "%08lX-%08lX@%s",
2842                  (long unsigned int) time(NULL),
2843                  (long unsigned int) newmsgid,
2844                  config.c_fqdn
2845                 );
2846
2847         /* Generate an ID if we don't have one already */
2848         if (msg->cm_fields['I']==NULL) {
2849                 msg->cm_fields['I'] = strdup(msgidbuf);
2850         }
2851
2852         /* If the message is big, set its body aside for storage elsewhere */
2853         if (msg->cm_fields['M'] != NULL) {
2854                 if (strlen(msg->cm_fields['M']) > BIGMSG) {
2855                         is_bigmsg = 1;
2856                         holdM = msg->cm_fields['M'];
2857                         msg->cm_fields['M'] = NULL;
2858                 }
2859         }
2860
2861         /* Serialize our data structure for storage in the database */
2862         serialize_message(&smr, msg);
2863
2864         if (is_bigmsg) {
2865                 msg->cm_fields['M'] = holdM;
2866         }
2867
2868         if (smr.len == 0) {
2869                 cprintf("%d Unable to serialize message\n",
2870                         ERROR + INTERNAL_ERROR);
2871                 return (-1L);
2872         }
2873
2874         /* Write our little bundle of joy into the message base */
2875         if (cdb_store(CDB_MSGMAIN, &newmsgid, (int)sizeof(long),
2876                       smr.ser, smr.len) < 0) {
2877                 syslog(LOG_ERR, "Can't store message\n");
2878                 retval = 0L;
2879         } else {
2880                 if (is_bigmsg) {
2881                         cdb_store(CDB_BIGMSGS,
2882                                   &newmsgid,
2883                                   (int)sizeof(long),
2884                                   holdM,
2885                                   (strlen(holdM) + 1)
2886                                 );
2887                 }
2888                 retval = newmsgid;
2889         }
2890
2891         /* Free the memory we used for the serialized message */
2892         free(smr.ser);
2893
2894         /* Return the *local* message ID to the caller
2895          * (even if we're storing an incoming network message)
2896          */
2897         return(retval);
2898 }
2899
2900
2901
2902 /*
2903  * Serialize a struct CtdlMessage into the format used on disk and network.
2904  *
2905  * This function loads up a "struct ser_ret" (defined in server.h) which
2906  * contains the length of the serialized message and a pointer to the
2907  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
2908  */
2909 void serialize_message(struct ser_ret *ret,             /* return values */
2910                        struct CtdlMessage *msg) /* unserialized msg */
2911 {
2912         size_t wlen, fieldlen;
2913         int i;
2914         static char *forder = FORDER;
2915
2916         /*
2917          * Check for valid message format
2918          */
2919         if (is_valid_message(msg) == 0) {
2920                 syslog(LOG_ERR, "serialize_message() aborting due to invalid message\n");
2921                 ret->len = 0;
2922                 ret->ser = NULL;
2923                 return;
2924         }
2925
2926         ret->len = 3;
2927         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL)
2928                                      ret->len = ret->len +
2929                                              strlen(msg->cm_fields[(int)forder[i]]) + 2;
2930
2931         ret->ser = malloc(ret->len);
2932         if (ret->ser == NULL) {
2933                 syslog(LOG_ERR, "serialize_message() malloc(%ld) failed: %s\n",
2934                        (long)ret->len, strerror(errno));
2935                 ret->len = 0;
2936                 ret->ser = NULL;
2937                 return;
2938         }
2939
2940         ret->ser[0] = 0xFF;
2941         ret->ser[1] = msg->cm_anon_type;
2942         ret->ser[2] = msg->cm_format_type;
2943         wlen = 3;
2944
2945         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
2946                         fieldlen = strlen(msg->cm_fields[(int)forder[i]]);
2947                         ret->ser[wlen++] = (char)forder[i];
2948                         safestrncpy((char *)&ret->ser[wlen], msg->cm_fields[(int)forder[i]], fieldlen+1);
2949                         wlen = wlen + fieldlen + 1;
2950                 }
2951         if (ret->len != wlen) syslog(LOG_ERR, "ERROR: len=%ld wlen=%ld\n",
2952                                      (long)ret->len, (long)wlen);
2953
2954         return;
2955 }
2956
2957
2958 /*
2959  * Serialize a struct CtdlMessage into the format used on disk and network.
2960  *
2961  * This function loads up a "struct ser_ret" (defined in server.h) which
2962  * contains the length of the serialized message and a pointer to the
2963  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
2964  */
2965 void dump_message(struct CtdlMessage *msg,      /* unserialized msg */
2966                   long Siz)                     /* how many chars ? */
2967 {
2968         int i;
2969         static char *forder = FORDER;
2970         char *buf;
2971
2972         /*
2973          * Check for valid message format
2974          */
2975         if (is_valid_message(msg) == 0) {
2976                 syslog(LOG_ERR, "dump_message() aborting due to invalid message\n");
2977                 return;
2978         }
2979
2980         buf = (char*) malloc (Siz + 1);
2981
2982         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
2983                         snprintf (buf, Siz, " msg[%c] = %s ...\n", (char) forder[i],
2984                                    msg->cm_fields[(int)forder[i]]);
2985                         if (client_write (buf, strlen(buf)) == -1)
2986                         {
2987                                 syslog(LOG_ERR, "dump_message(): aborting due to write failure.\n");
2988                                 return;
2989                         }
2990                 }
2991
2992         return;
2993 }
2994
2995
2996
2997 /*
2998  * Check to see if any messages already exist in the current room which
2999  * carry the same Exclusive ID as this one.  If any are found, delete them.
3000  */
3001 void ReplicationChecks(struct CtdlMessage *msg) {
3002         long old_msgnum = (-1L);
3003
3004         if (DoesThisRoomNeedEuidIndexing(&CC->room) == 0) return;
3005
3006         syslog(LOG_DEBUG, "Performing replication checks in <%s>\n",
3007                CC->room.QRname);
3008
3009         /* No exclusive id?  Don't do anything. */
3010         if (msg == NULL) return;
3011         if (msg->cm_fields['E'] == NULL) return;
3012         if (IsEmptyStr(msg->cm_fields['E'])) return;
3013         /*syslog(LOG_DEBUG, "Exclusive ID: <%s> for room <%s>\n",
3014           msg->cm_fields['E'], CC->room.QRname);*/
3015
3016         old_msgnum = CtdlLocateMessageByEuid(msg->cm_fields['E'], &CC->room);
3017         if (old_msgnum > 0L) {
3018                 syslog(LOG_DEBUG, "ReplicationChecks() replacing message %ld\n", old_msgnum);
3019                 CtdlDeleteMessages(CC->room.QRname, &old_msgnum, 1, "");
3020         }
3021 }
3022
3023
3024
3025 /*
3026  * Save a message to disk and submit it into the delivery system.
3027  */
3028 long CtdlSubmitMsg(struct CtdlMessage *msg,     /* message to save */
3029                    struct recptypes *recps,     /* recipients (if mail) */
3030                    const char *force,           /* force a particular room? */
3031                    int flags                    /* should the message be exported clean? */
3032         )
3033 {
3034         char submit_filename[128];
3035         char generated_timestamp[32];
3036         char hold_rm[ROOMNAMELEN];
3037         char actual_rm[ROOMNAMELEN];
3038         char force_room[ROOMNAMELEN];
3039         char content_type[SIZ];                 /* We have to learn this */
3040         char recipient[SIZ];
3041         long newmsgid;
3042         const char *mptr = NULL;
3043         struct ctdluser userbuf;
3044         int a, i;
3045         struct MetaData smi;
3046         FILE *network_fp = NULL;
3047         static int seqnum = 1;
3048         struct CtdlMessage *imsg = NULL;
3049         char *instr = NULL;
3050         size_t instr_alloc = 0;
3051         struct ser_ret smr;
3052         char *hold_R, *hold_D;
3053         char *collected_addresses = NULL;
3054         struct addresses_to_be_filed *aptr = NULL;
3055         StrBuf *saved_rfc822_version = NULL;
3056         int qualified_for_journaling = 0;
3057         CitContext *CCC = MyContext();
3058         char bounce_to[1024] = "";
3059         int rv = 0;
3060
3061         syslog(LOG_DEBUG, "CtdlSubmitMsg() called\n");
3062         if (is_valid_message(msg) == 0) return(-1);     /* self check */
3063
3064         /* If this message has no timestamp, we take the liberty of
3065          * giving it one, right now.
3066          */
3067         if (msg->cm_fields['T'] == NULL) {
3068                 snprintf(generated_timestamp, sizeof generated_timestamp, "%ld", (long)time(NULL));
3069                 msg->cm_fields['T'] = strdup(generated_timestamp);
3070         }
3071
3072         /* If this message has no path, we generate one.
3073          */
3074         if (msg->cm_fields['P'] == NULL) {
3075                 if (msg->cm_fields['A'] != NULL) {
3076                         msg->cm_fields['P'] = strdup(msg->cm_fields['A']);
3077                         for (a=0; !IsEmptyStr(&msg->cm_fields['P'][a]); ++a) {
3078                                 if (isspace(msg->cm_fields['P'][a])) {
3079                                         msg->cm_fields['P'][a] = ' ';
3080                                 }
3081                         }
3082                 }
3083                 else {
3084                         msg->cm_fields['P'] = strdup("unknown");
3085                 }
3086         }
3087
3088         if (force == NULL) {
3089                 strcpy(force_room, "");
3090         }
3091         else {
3092                 strcpy(force_room, force);
3093         }
3094
3095         /* Learn about what's inside, because it's what's inside that counts */
3096         if (msg->cm_fields['M'] == NULL) {
3097                 syslog(LOG_ERR, "ERROR: attempt to save message with NULL body\n");
3098                 return(-2);
3099         }
3100
3101         switch (msg->cm_format_type) {
3102         case 0:
3103                 strcpy(content_type, "text/x-citadel-variformat");
3104                 break;
3105         case 1:
3106                 strcpy(content_type, "text/plain");
3107                 break;
3108         case 4:
3109                 strcpy(content_type, "text/plain");
3110                 mptr = bmstrcasestr(msg->cm_fields['M'], "Content-type:");
3111                 if (mptr != NULL) {
3112                         char *aptr;
3113                         safestrncpy(content_type, &mptr[13], sizeof content_type);
3114                         striplt(content_type);
3115                         aptr = content_type;
3116                         while (!IsEmptyStr(aptr)) {
3117                                 if ((*aptr == ';')
3118                                     || (*aptr == ' ')
3119                                     || (*aptr == 13)
3120                                     || (*aptr == 10)) {
3121                                         *aptr = 0;
3122                                 }
3123                                 else aptr++;
3124                         }
3125                 }
3126         }
3127
3128         /* Goto the correct room */
3129         syslog(LOG_DEBUG, "Selected room %s\n", (recps) ? CCC->room.QRname : SENTITEMS);
3130         strcpy(hold_rm, CCC->room.QRname);
3131         strcpy(actual_rm, CCC->room.QRname);
3132         if (recps != NULL) {
3133                 strcpy(actual_rm, SENTITEMS);
3134         }
3135
3136         /* If the user is a twit, move to the twit room for posting */
3137         if (TWITDETECT) {
3138                 if (CCC->user.axlevel == AxProbU) {
3139                         strcpy(hold_rm, actual_rm);
3140                         strcpy(actual_rm, config.c_twitroom);
3141                         syslog(LOG_DEBUG, "Diverting to twit room\n");
3142                 }
3143         }
3144
3145         /* ...or if this message is destined for Aide> then go there. */
3146         if (!IsEmptyStr(force_room)) {
3147                 strcpy(actual_rm, force_room);
3148         }
3149
3150         syslog(LOG_DEBUG, "Final selection: %s\n", actual_rm);
3151         if (strcasecmp(actual_rm, CCC->room.QRname)) {
3152                 /* CtdlGetRoom(&CCC->room, actual_rm); */
3153                 CtdlUserGoto(actual_rm, 0, 1, NULL, NULL);
3154         }
3155
3156         /*
3157          * If this message has no O (room) field, generate one.
3158          */
3159         if (msg->cm_fields['O'] == NULL) {
3160                 msg->cm_fields['O'] = strdup(CCC->room.QRname);
3161         }
3162
3163         /* Perform "before save" hooks (aborting if any return nonzero) */
3164         syslog(LOG_DEBUG, "Performing before-save hooks\n");
3165         if (PerformMessageHooks(msg, EVT_BEFORESAVE) > 0) return(-3);
3166
3167         /*
3168          * If this message has an Exclusive ID, and the room is replication
3169          * checking enabled, then do replication checks.
3170          */
3171         if (DoesThisRoomNeedEuidIndexing(&CCC->room)) {
3172                 ReplicationChecks(msg);
3173         }
3174
3175         /* Save it to disk */
3176         syslog(LOG_DEBUG, "Saving to disk\n");
3177         newmsgid = send_message(msg);
3178         if (newmsgid <= 0L) return(-5);
3179
3180         /* Write a supplemental message info record.  This doesn't have to
3181          * be a critical section because nobody else knows about this message
3182          * yet.
3183          */
3184         syslog(LOG_DEBUG, "Creating MetaData record\n");
3185         memset(&smi, 0, sizeof(struct MetaData));
3186         smi.meta_msgnum = newmsgid;
3187         smi.meta_refcount = 0;
3188         safestrncpy(smi.meta_content_type, content_type,
3189                     sizeof smi.meta_content_type);
3190
3191         /*
3192          * Measure how big this message will be when rendered as RFC822.
3193          * We do this for two reasons:
3194          * 1. We need the RFC822 length for the new metadata record, so the
3195          *    POP and IMAP services don't have to calculate message lengths
3196          *    while the user is waiting (multiplied by potentially hundreds
3197          *    or thousands of messages).
3198          * 2. If journaling is enabled, we will need an RFC822 version of the
3199          *    message to attach to the journalized copy.
3200          */
3201         if (CCC->redirect_buffer != NULL) {
3202                 syslog(LOG_ALERT, "CCC->redirect_buffer is not NULL during message submission!\n");
3203                 abort();
3204         }
3205         CCC->redirect_buffer = NewStrBufPlain(NULL, SIZ);
3206         CtdlOutputPreLoadedMsg(msg, MT_RFC822, HEADERS_ALL, 0, 1, QP_EADDR);
3207         smi.meta_rfc822_length = StrLength(CCC->redirect_buffer);
3208         saved_rfc822_version = CCC->redirect_buffer;
3209         CCC->redirect_buffer = NULL;
3210
3211         PutMetaData(&smi);
3212
3213         /* Now figure out where to store the pointers */
3214         syslog(LOG_DEBUG, "Storing pointers\n");
3215
3216         /* If this is being done by the networker delivering a private
3217          * message, we want to BYPASS saving the sender's copy (because there
3218          * is no local sender; it would otherwise go to the Trashcan).
3219          */
3220         if ((!CCC->internal_pgm) || (recps == NULL)) {
3221                 if (CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 1, msg) != 0) {
3222                         syslog(LOG_ERR, "ERROR saving message pointer!\n");
3223                         CtdlSaveMsgPointerInRoom(config.c_aideroom, newmsgid, 0, msg);
3224                 }
3225         }
3226
3227         /* For internet mail, drop a copy in the outbound queue room */
3228         if ((recps != NULL) && (recps->num_internet > 0)) {
3229                 CtdlSaveMsgPointerInRoom(SMTP_SPOOLOUT_ROOM, newmsgid, 0, msg);
3230         }
3231
3232         /* If other rooms are specified, drop them there too. */
3233         if ((recps != NULL) && (recps->num_room > 0))
3234                 for (i=0; i<num_tokens(recps->recp_room, '|'); ++i) {
3235                         extract_token(recipient, recps->recp_room, i,
3236                                       '|', sizeof recipient);
3237                         syslog(LOG_DEBUG, "Delivering to room <%s>\n", recipient);///// xxxx
3238                         CtdlSaveMsgPointerInRoom(recipient, newmsgid, 0, msg);
3239                 }
3240
3241         /* Bump this user's messages posted counter. */
3242         syslog(LOG_DEBUG, "Updating user\n");
3243         CtdlGetUserLock(&CCC->user, CCC->curr_user);
3244         CCC->user.posted = CCC->user.posted + 1;
3245         CtdlPutUserLock(&CCC->user);
3246
3247         /* Decide where bounces need to be delivered */
3248         if ((recps != NULL) && (recps->bounce_to != NULL)) {
3249                 safestrncpy(bounce_to, recps->bounce_to, sizeof bounce_to);
3250         }
3251         else if (CCC->logged_in) {
3252                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", CCC->user.fullname, config.c_nodename);
3253         }
3254         else {
3255                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", msg->cm_fields['A'], msg->cm_fields['N']);
3256         }
3257
3258         /* If this is private, local mail, make a copy in the
3259          * recipient's mailbox and bump the reference count.
3260          */
3261         if ((recps != NULL) && (recps->num_local > 0))
3262                 for (i=0; i<num_tokens(recps->recp_local, '|'); ++i) {
3263                         extract_token(recipient, recps->recp_local, i,
3264                                       '|', sizeof recipient);
3265                         syslog(LOG_DEBUG, "Delivering private local mail to <%s>\n",
3266                                recipient);
3267                         if (CtdlGetUser(&userbuf, recipient) == 0) {
3268                                 CtdlMailboxName(actual_rm, sizeof actual_rm, &userbuf, MAILROOM);
3269                                 CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 0, msg);
3270                                 CtdlBumpNewMailCounter(userbuf.usernum);
3271                                 if (!IsEmptyStr(config.c_funambol_host) || !IsEmptyStr(config.c_pager_program)) {
3272                                         /* Generate a instruction message for the Funambol notification
3273                                          * server, in the same style as the SMTP queue
3274                                          */
3275                                         instr_alloc = 1024;
3276                                         instr = malloc(instr_alloc);
3277                                         snprintf(instr, instr_alloc,
3278                                                  "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
3279                                                  "bounceto|%s\n",
3280                                                  SPOOLMIME, newmsgid, (long)time(NULL),
3281                                                  bounce_to
3282                                                 );
3283
3284                                         imsg = malloc(sizeof(struct CtdlMessage));
3285                                         memset(imsg, 0, sizeof(struct CtdlMessage));
3286                                         imsg->cm_magic = CTDLMESSAGE_MAGIC;
3287                                         imsg->cm_anon_type = MES_NORMAL;
3288                                         imsg->cm_format_type = FMT_RFC822;
3289                                         imsg->cm_fields['U'] = strdup("QMSG");
3290                                         imsg->cm_fields['A'] = strdup("Citadel");
3291                                         imsg->cm_fields['J'] = strdup("do not journal");
3292                                         imsg->cm_fields['M'] = instr;   /* imsg owns this memory now */
3293                                         imsg->cm_fields['2'] = strdup(recipient);
3294                                         CtdlSubmitMsg(imsg, NULL, FNBL_QUEUE_ROOM, 0);
3295                                         CtdlFreeMessage(imsg);
3296                                 }
3297                         }
3298                         else {
3299                                 syslog(LOG_DEBUG, "No user <%s>\n", recipient);
3300                                 CtdlSaveMsgPointerInRoom(config.c_aideroom, newmsgid, 0, msg);
3301                         }
3302                 }
3303
3304         /* Perform "after save" hooks */
3305         syslog(LOG_DEBUG, "Performing after-save hooks\n");
3306         if (msg->cm_fields['3'] != NULL) free(msg->cm_fields['3']);
3307         msg->cm_fields['3'] = malloc(20);
3308         snprintf(msg->cm_fields['3'], 20, "%ld", newmsgid);
3309         PerformMessageHooks(msg, EVT_AFTERSAVE);
3310         free(msg->cm_fields['3']);
3311         msg->cm_fields['3'] = NULL;
3312
3313         /* For IGnet mail, we have to save a new copy into the spooler for
3314          * each recipient, with the R and D fields set to the recipient and
3315          * destination-node.  This has two ugly side effects: all other
3316          * recipients end up being unlisted in this recipient's copy of the
3317          * message, and it has to deliver multiple messages to the same
3318          * node.  We'll revisit this again in a year or so when everyone has
3319          * a network spool receiver that can handle the new style messages.
3320          */
3321         if ((recps != NULL) && (recps->num_ignet > 0))
3322                 for (i=0; i<num_tokens(recps->recp_ignet, '|'); ++i) {
3323                         extract_token(recipient, recps->recp_ignet, i,
3324                                       '|', sizeof recipient);
3325
3326                         hold_R = msg->cm_fields['R'];
3327                         hold_D = msg->cm_fields['D'];
3328                         msg->cm_fields['R'] = malloc(SIZ);
3329                         msg->cm_fields['D'] = malloc(128);
3330                         extract_token(msg->cm_fields['R'], recipient, 0, '@', SIZ);
3331                         extract_token(msg->cm_fields['D'], recipient, 1, '@', 128);
3332
3333                         serialize_message(&smr, msg);
3334                         if (smr.len > 0) {
3335                                 snprintf(submit_filename, sizeof submit_filename,
3336                                          "%s/netmail.%04lx.%04x.%04x",
3337                                          ctdl_netin_dir,
3338                                          (long) getpid(), CCC->cs_pid, ++seqnum);
3339                                 network_fp = fopen(submit_filename, "wb+");
3340                                 if (network_fp != NULL) {
3341                                         rv = fwrite(smr.ser, smr.len, 1, network_fp);
3342                                         if (rv == -1) {
3343                                                 syslog(LOG_EMERG, "CtdlSubmitMsg(): Couldn't write network spool file: %s\n",
3344                                                        strerror(errno));
3345                                         }
3346                                         fclose(network_fp);
3347                                 }
3348                                 free(smr.ser);
3349                         }
3350
3351                         free(msg->cm_fields['R']);
3352                         free(msg->cm_fields['D']);
3353                         msg->cm_fields['R'] = hold_R;
3354                         msg->cm_fields['D'] = hold_D;
3355                 }
3356
3357         /* Go back to the room we started from */
3358         syslog(LOG_DEBUG, "Returning to original room %s\n", hold_rm);
3359         if (strcasecmp(hold_rm, CCC->room.QRname))
3360                 CtdlUserGoto(hold_rm, 0, 1, NULL, NULL);
3361
3362         /* For internet mail, generate delivery instructions.
3363          * Yes, this is recursive.  Deal with it.  Infinite recursion does
3364          * not happen because the delivery instructions message does not
3365          * contain a recipient.
3366          */
3367         if ((recps != NULL) && (recps->num_internet > 0)) {
3368                 StrBuf *SpoolMsg = NewStrBuf();
3369                 long nTokens;
3370
3371                 syslog(LOG_DEBUG, "Generating delivery instructions\n");
3372
3373                 StrBufPrintf(SpoolMsg,
3374                              "Content-type: "SPOOLMIME"\n"
3375                              "\n"
3376                              "msgid|%ld\n"
3377                              "submitted|%ld\n"
3378                              "bounceto|%s\n",
3379                              newmsgid,
3380                              (long)time(NULL),
3381                              bounce_to);
3382
3383                 if (recps->envelope_from != NULL) {
3384                         StrBufAppendBufPlain(SpoolMsg, HKEY("envelope_from|"), 0);
3385                         StrBufAppendBufPlain(SpoolMsg, recps->envelope_from, -1, 0);
3386                         StrBufAppendBufPlain(SpoolMsg, HKEY("\n"), 0);
3387                 }
3388                 if (recps->sending_room != NULL) {
3389                         StrBufAppendBufPlain(SpoolMsg, HKEY("source_room|"), 0);
3390                         StrBufAppendBufPlain(SpoolMsg, recps->sending_room, -1, 0);
3391                         StrBufAppendBufPlain(SpoolMsg, HKEY("\n"), 0);
3392                 }
3393
3394                 nTokens = num_tokens(recps->recp_internet, '|');
3395                 for (i = 0; i < nTokens; i++) {
3396                         long len;
3397                         len = extract_token(recipient, recps->recp_internet, i, '|', sizeof recipient);
3398                         if (len > 0) {
3399                                 StrBufAppendBufPlain(SpoolMsg, HKEY("remote|"), 0);
3400                                 StrBufAppendBufPlain(SpoolMsg, recipient, len, 0);
3401                                 StrBufAppendBufPlain(SpoolMsg, HKEY("|0||\n"), 0);
3402                         }
3403                 }
3404
3405                 imsg = malloc(sizeof(struct CtdlMessage));
3406                 memset(imsg, 0, sizeof(struct CtdlMessage));
3407                 imsg->cm_magic = CTDLMESSAGE_MAGIC;
3408                 imsg->cm_anon_type = MES_NORMAL;
3409                 imsg->cm_format_type = FMT_RFC822;
3410                 imsg->cm_fields['U'] = strdup("QMSG");
3411                 imsg->cm_fields['A'] = strdup("Citadel");
3412                 imsg->cm_fields['J'] = strdup("do not journal");
3413                 imsg->cm_fields['M'] = SmashStrBuf(&SpoolMsg);  /* imsg owns this memory now */
3414                 CtdlSubmitMsg(imsg, NULL, SMTP_SPOOLOUT_ROOM, QP_EADDR);
3415                 CtdlFreeMessage(imsg);
3416         }
3417
3418         /*
3419          * Any addresses to harvest for someone's address book?
3420          */
3421         if ( (CCC->logged_in) && (recps != NULL) ) {
3422                 collected_addresses = harvest_collected_addresses(msg);
3423         }
3424
3425         if (collected_addresses != NULL) {
3426                 aptr = (struct addresses_to_be_filed *)
3427                         malloc(sizeof(struct addresses_to_be_filed));
3428                 CtdlMailboxName(actual_rm, sizeof actual_rm,
3429                                 &CCC->user, USERCONTACTSROOM);
3430                 aptr->roomname = strdup(actual_rm);
3431                 aptr->collected_addresses = collected_addresses;
3432                 begin_critical_section(S_ATBF);
3433                 aptr->next = atbf;
3434                 atbf = aptr;
3435                 end_critical_section(S_ATBF);
3436         }
3437
3438         /*
3439          * Determine whether this message qualifies for journaling.
3440          */
3441         if (msg->cm_fields['J'] != NULL) {
3442                 qualified_for_journaling = 0;
3443         }
3444         else {
3445                 if (recps == NULL) {
3446                         qualified_for_journaling = config.c_journal_pubmsgs;
3447                 }
3448                 else if (recps->num_local + recps->num_ignet + recps->num_internet > 0) {
3449                         qualified_for_journaling = config.c_journal_email;
3450                 }
3451                 else {
3452                         qualified_for_journaling = config.c_journal_pubmsgs;
3453                 }
3454         }
3455
3456         /*
3457          * Do we have to perform journaling?  If so, hand off the saved
3458          * RFC822 version will be handed off to the journaler for background
3459          * submit.  Otherwise, we have to free the memory ourselves.
3460          */
3461         if (saved_rfc822_version != NULL) {
3462                 if (qualified_for_journaling) {
3463                         JournalBackgroundSubmit(msg, saved_rfc822_version, recps);
3464                 }
3465                 else {
3466                         FreeStrBuf(&saved_rfc822_version);
3467                 }
3468         }
3469
3470         /* Done. */
3471         return(newmsgid);
3472 }
3473
3474
3475
3476 void aide_message (char *text, char *subject)
3477 {
3478         quickie_message("Citadel",NULL,NULL,AIDEROOM,text,FMT_CITADEL,subject);
3479 }
3480
3481
3482 /*
3483  * Convenience function for generating small administrative messages.
3484  */
3485 void quickie_message(const char *from, const char *fromaddr, char *to, char *room, const char *text,
3486                      int format_type, const char *subject)
3487 {
3488         struct CtdlMessage *msg;
3489         struct recptypes *recp = NULL;
3490
3491         msg = malloc(sizeof(struct CtdlMessage));
3492         memset(msg, 0, sizeof(struct CtdlMessage));
3493         msg->cm_magic = CTDLMESSAGE_MAGIC;
3494         msg->cm_anon_type = MES_NORMAL;
3495         msg->cm_format_type = format_type;
3496
3497         if (from != NULL) {
3498                 msg->cm_fields['A'] = strdup(from);
3499         }
3500         else if (fromaddr != NULL) {
3501                 msg->cm_fields['A'] = strdup(fromaddr);
3502                 if (strchr(msg->cm_fields['A'], '@')) {
3503                         *strchr(msg->cm_fields['A'], '@') = 0;
3504                 }
3505         }
3506         else {
3507                 msg->cm_fields['A'] = strdup("Citadel");
3508         }
3509
3510         if (fromaddr != NULL) msg->cm_fields['F'] = strdup(fromaddr);
3511         if (room != NULL) msg->cm_fields['O'] = strdup(room);
3512         msg->cm_fields['N'] = strdup(NODENAME);
3513         if (to != NULL) {
3514                 msg->cm_fields['R'] = strdup(to);
3515                 recp = validate_recipients(to, NULL, 0);
3516         }
3517         if (subject != NULL) {
3518                 msg->cm_fields['U'] = strdup(subject);
3519         }
3520         msg->cm_fields['M'] = strdup(text);
3521
3522         CtdlSubmitMsg(msg, recp, room, 0);
3523         CtdlFreeMessage(msg);
3524         if (recp != NULL) free_recipients(recp);
3525 }
3526
3527
3528
3529 /*
3530  * Back end function used by CtdlMakeMessage() and similar functions
3531  */
3532 StrBuf *CtdlReadMessageBodyBuf(char *terminator,        /* token signalling EOT */
3533                                long tlen,
3534                                size_t maxlen,           /* maximum message length */
3535                                char *exist,             /* if non-null, append to it;
3536                                                            exist is ALWAYS freed  */
3537                                int crlf,                /* CRLF newlines instead of LF */
3538                                int *sock                /* socket handle or 0 for this session's client socket */
3539         )
3540 {
3541         StrBuf *Message;
3542         StrBuf *LineBuf;
3543         int flushing = 0;
3544         int finished = 0;
3545         int dotdot = 0;
3546
3547         LineBuf = NewStrBufPlain(NULL, SIZ);
3548         if (exist == NULL) {
3549                 Message = NewStrBufPlain(NULL, 4 * SIZ);
3550         }
3551         else {
3552                 Message = NewStrBufPlain(exist, -1);
3553                 free(exist);
3554         }
3555
3556         /* Do we need to change leading ".." to "." for SMTP escaping? */
3557         if ((tlen == 1) && (*terminator == '.')) {
3558                 dotdot = 1;
3559         }
3560
3561         /* read in the lines of message text one by one */
3562         do {
3563                 if (sock != NULL) {
3564                         if ((CtdlSockGetLine(sock, LineBuf, 5) < 0) ||
3565                             (*sock == -1))
3566                                 finished = 1;
3567                 }
3568                 else {
3569                         if (CtdlClientGetLine(LineBuf) < 0) finished = 1;
3570                 }
3571                 if ((StrLength(LineBuf) == tlen) &&
3572                     (!strcmp(ChrPtr(LineBuf), terminator)))
3573                         finished = 1;
3574
3575                 if ( (!flushing) && (!finished) ) {
3576                         if (crlf) {
3577                                 StrBufAppendBufPlain(LineBuf, HKEY("\r\n"), 0);
3578                         }
3579                         else {
3580                                 StrBufAppendBufPlain(LineBuf, HKEY("\n"), 0);
3581                         }
3582
3583                         /* Unescape SMTP-style input of two dots at the beginning of the line */
3584                         if ((dotdot) &&
3585                             (StrLength(LineBuf) == 2) &&
3586                             (!strcmp(ChrPtr(LineBuf), "..")))
3587                         {
3588                                 StrBufCutLeft(LineBuf, 1);
3589                         }
3590
3591                         StrBufAppendBuf(Message, LineBuf, 0);
3592                 }
3593
3594                 /* if we've hit the max msg length, flush the rest */
3595                 if (StrLength(Message) >= maxlen) flushing = 1;
3596
3597         } while (!finished);
3598         FreeStrBuf(&LineBuf);
3599         return Message;
3600 }
3601
3602 void DeleteAsyncMsg(ReadAsyncMsg **Msg)
3603 {
3604         if (*Msg == NULL)
3605                 return;
3606         FreeStrBuf(&(*Msg)->MsgBuf);
3607
3608         free(*Msg);
3609         *Msg = NULL;
3610 }
3611
3612 ReadAsyncMsg *NewAsyncMsg(const char *terminator,       /* token signalling EOT */
3613                           long tlen,
3614                           size_t maxlen,                /* maximum message length */
3615                           size_t expectlen,             /* if we expect a message, how long should it be? */
3616                           char *exist,                  /* if non-null, append to it;
3617                                                            exist is ALWAYS freed  */
3618                           long eLen,                    /* length of exist */
3619                           int crlf                      /* CRLF newlines instead of LF */
3620         )
3621 {
3622         ReadAsyncMsg *NewMsg;
3623
3624         NewMsg = (ReadAsyncMsg *)malloc(sizeof(ReadAsyncMsg));
3625         memset(NewMsg, 0, sizeof(ReadAsyncMsg));
3626
3627         if (exist == NULL) {
3628                 long len;
3629
3630                 if (expectlen == 0) {
3631                         len = 4 * SIZ;
3632                 }
3633                 else {
3634                         len = expectlen + 10;
3635                 }
3636                 NewMsg->MsgBuf = NewStrBufPlain(NULL, len);
3637         }
3638         else {
3639                 NewMsg->MsgBuf = NewStrBufPlain(exist, eLen);
3640                 free(exist);
3641         }
3642         /* Do we need to change leading ".." to "." for SMTP escaping? */
3643         if ((tlen == 1) && (*terminator == '.')) {
3644                 NewMsg->dodot = 1;
3645         }
3646
3647         NewMsg->terminator = terminator;
3648         NewMsg->tlen = tlen;
3649
3650         NewMsg->maxlen = maxlen;
3651
3652         NewMsg->crlf = crlf;
3653
3654         return NewMsg;
3655 }
3656
3657 /*
3658  * Back end function used by CtdlMakeMessage() and similar functions
3659  */
3660 eReadState CtdlReadMessageBodyAsync(AsyncIO *IO)
3661 {
3662         ReadAsyncMsg *ReadMsg;
3663         int MsgFinished = 0;
3664         eReadState Finished = eMustReadMore;
3665
3666 #ifdef BIGBAD_IODBG
3667         char fn [SIZ];
3668         FILE *fd;
3669         const char *pch = ChrPtr(IO->SendBuf.Buf);
3670         const char *pchh = IO->SendBuf.ReadWritePointer;
3671         long nbytes;
3672
3673         if (pchh == NULL)
3674                 pchh = pch;
3675
3676         nbytes = StrLength(IO->SendBuf.Buf) - (pchh - pch);
3677         snprintf(fn, SIZ, "/tmp/foolog_ev_%s.%d",
3678                  ((CitContext*)(IO->CitContext))->ServiceName,
3679                  IO->SendBuf.fd);
3680
3681         fd = fopen(fn, "a+");
3682 #endif
3683
3684         ReadMsg = IO->ReadMsg;
3685
3686         /* read in the lines of message text one by one */
3687         do {
3688                 Finished = StrBufChunkSipLine(IO->IOBuf, &IO->RecvBuf);
3689
3690                 switch (Finished) {
3691                 case eMustReadMore: /// read new from socket...
3692 #ifdef BIGBAD_IODBG
3693                         if (IO->RecvBuf.ReadWritePointer != NULL) {
3694                                 nbytes = StrLength(IO->RecvBuf.Buf) - (IO->RecvBuf.ReadWritePointer - ChrPtr(IO->RecvBuf.Buf));
3695                                 fprintf(fd, "Read; Line unfinished: %ld Bytes still in buffer [", nbytes);
3696
3697                                 fwrite(IO->RecvBuf.ReadWritePointer, nbytes, 1, fd);
3698
3699                                 fprintf(fd, "]\n");
3700                         } else {
3701                                 fprintf(fd, "BufferEmpty! \n");
3702                         }
3703                         fclose(fd);
3704 #endif
3705                         return Finished;
3706                     break;
3707                 case eBufferNotEmpty: /* shouldn't happen... */
3708                 case eReadSuccess: /// done for now...
3709                     break;
3710                 case eReadFail: /// WHUT?
3711                     ///todo: shut down!
3712                         break;
3713                 }
3714
3715
3716                 if ((StrLength(IO->IOBuf) == ReadMsg->tlen) &&
3717                     (!strcmp(ChrPtr(IO->IOBuf), ReadMsg->terminator))) {
3718                         MsgFinished = 1;
3719 #ifdef BIGBAD_IODBG
3720                         fprintf(fd, "found Terminator; Message Size: %d\n", StrLength(ReadMsg->MsgBuf));
3721 #endif
3722                 }
3723                 else if (!ReadMsg->flushing) {
3724
3725 #ifdef BIGBAD_IODBG
3726                         fprintf(fd, "Read Line: [%d][%s]\n", StrLength(IO->IOBuf), ChrPtr(IO->IOBuf));
3727 #endif
3728
3729                         /* Unescape SMTP-style input of two dots at the beginning of the line */
3730                         if ((ReadMsg->dodot) &&
3731                             (StrLength(IO->IOBuf) == 2) &&  /* TODO: do we just unescape lines with two dots or any line? */
3732                             (!strcmp(ChrPtr(IO->IOBuf), "..")))
3733                         {
3734 #ifdef BIGBAD_IODBG
3735                                 fprintf(fd, "UnEscaped!\n");
3736 #endif
3737                                 StrBufCutLeft(IO->IOBuf, 1);
3738                         }
3739
3740                         if (ReadMsg->crlf) {
3741                                 StrBufAppendBufPlain(IO->IOBuf, HKEY("\r\n"), 0);
3742                         }
3743                         else {
3744                                 StrBufAppendBufPlain(IO->IOBuf, HKEY("\n"), 0);
3745                         }
3746
3747                         StrBufAppendBuf(ReadMsg->MsgBuf, IO->IOBuf, 0);
3748                 }
3749
3750                 /* if we've hit the max msg length, flush the rest */
3751                 if (StrLength(ReadMsg->MsgBuf) >= ReadMsg->maxlen) ReadMsg->flushing = 1;
3752
3753         } while (!MsgFinished);
3754
3755 #ifdef BIGBAD_IODBG
3756         fprintf(fd, "Done with reading; %s.\n, ",
3757                 (MsgFinished)?"Message Finished": "FAILED");
3758         fclose(fd);
3759 #endif
3760         if (MsgFinished)
3761                 return eReadSuccess;
3762         else
3763                 return eAbort;
3764 }
3765
3766
3767 /*
3768  * Back end function used by CtdlMakeMessage() and similar functions
3769  */
3770 char *CtdlReadMessageBody(char *terminator,     /* token signalling EOT */
3771                           long tlen,
3772                           size_t maxlen,                /* maximum message length */
3773                           char *exist,          /* if non-null, append to it;
3774                                                    exist is ALWAYS freed  */
3775                           int crlf,             /* CRLF newlines instead of LF */
3776                           int *sock             /* socket handle or 0 for this session's client socket */
3777         )
3778 {
3779         StrBuf *Message;
3780
3781         Message = CtdlReadMessageBodyBuf(terminator,
3782                                          tlen,
3783                                          maxlen,
3784                                          exist,
3785                                          crlf,
3786                                          sock);
3787         if (Message == NULL)
3788                 return NULL;
3789         else
3790                 return SmashStrBuf(&Message);
3791 }
3792
3793
3794 /*
3795  * Build a binary message to be saved on disk.
3796  * (NOTE: if you supply 'preformatted_text', the buffer you give it
3797  * will become part of the message.  This means you are no longer
3798  * responsible for managing that memory -- it will be freed along with
3799  * the rest of the fields when CtdlFreeMessage() is called.)
3800  */
3801
3802 struct CtdlMessage *CtdlMakeMessage(
3803         struct ctdluser *author,        /* author's user structure */
3804         char *recipient,                /* NULL if it's not mail */
3805         char *recp_cc,                  /* NULL if it's not mail */
3806         char *room,                     /* room where it's going */
3807         int type,                       /* see MES_ types in header file */
3808         int format_type,                /* variformat, plain text, MIME... */
3809         char *fake_name,                /* who we're masquerading as */
3810         char *my_email,                 /* which of my email addresses to use (empty is ok) */
3811         char *subject,                  /* Subject (optional) */
3812         char *supplied_euid,            /* ...or NULL if this is irrelevant */
3813         char *preformatted_text,        /* ...or NULL to read text from client */
3814         char *references                /* Thread references */
3815         ) {
3816         char dest_node[256];
3817         char buf[1024];
3818         struct CtdlMessage *msg;
3819         StrBuf *FakeAuthor;
3820         StrBuf *FakeEncAuthor = NULL;
3821
3822         msg = malloc(sizeof(struct CtdlMessage));
3823         memset(msg, 0, sizeof(struct CtdlMessage));
3824         msg->cm_magic = CTDLMESSAGE_MAGIC;
3825         msg->cm_anon_type = type;
3826         msg->cm_format_type = format_type;
3827
3828         /* Don't confuse the poor folks if it's not routed mail. */
3829         strcpy(dest_node, "");
3830
3831         if (recipient != NULL) striplt(recipient);
3832         if (recp_cc != NULL) striplt(recp_cc);
3833
3834         /* Path or Return-Path */
3835         if (my_email == NULL) my_email = "";
3836
3837         if (!IsEmptyStr(my_email)) {
3838                 msg->cm_fields['P'] = strdup(my_email);
3839         }
3840         else {
3841                 snprintf(buf, sizeof buf, "%s", author->fullname);
3842                 msg->cm_fields['P'] = strdup(buf);
3843         }
3844         convert_spaces_to_underscores(msg->cm_fields['P']);
3845
3846         snprintf(buf, sizeof buf, "%ld", (long)time(NULL));     /* timestamp */
3847         msg->cm_fields['T'] = strdup(buf);
3848
3849         if ((fake_name != NULL) && (fake_name[0])) {            /* author */
3850                 FakeAuthor = NewStrBufPlain (fake_name, -1);
3851         }
3852         else {
3853                 FakeAuthor = NewStrBufPlain (author->fullname, -1);
3854         }
3855         StrBufRFC2047encode(&FakeEncAuthor, FakeAuthor);
3856         msg->cm_fields['A'] = SmashStrBuf(&FakeEncAuthor);
3857         FreeStrBuf(&FakeAuthor);
3858
3859         if (CC->room.QRflags & QR_MAILBOX) {            /* room */
3860                 msg->cm_fields['O'] = strdup(&CC->room.QRname[11]);
3861         }
3862         else {
3863                 msg->cm_fields['O'] = strdup(CC->room.QRname);
3864         }
3865
3866         msg->cm_fields['N'] = strdup(NODENAME);         /* nodename */
3867         msg->cm_fields['H'] = strdup(HUMANNODE);                /* hnodename */
3868
3869         if ((recipient != NULL) && (recipient[0] != 0)) {
3870                 msg->cm_fields['R'] = strdup(recipient);
3871         }
3872         if ((recp_cc != NULL) && (recp_cc[0] != 0)) {
3873                 msg->cm_fields['Y'] = strdup(recp_cc);
3874         }
3875         if (dest_node[0] != 0) {
3876                 msg->cm_fields['D'] = strdup(dest_node);
3877         }
3878
3879         if (!IsEmptyStr(my_email)) {
3880                 msg->cm_fields['F'] = strdup(my_email);
3881         }
3882         else if ( (author == &CC->user) && (!IsEmptyStr(CC->cs_inet_email)) ) {
3883                 msg->cm_fields['F'] = strdup(CC->cs_inet_email);
3884         }
3885
3886         if (subject != NULL) {
3887                 long length;
3888                 striplt(subject);
3889                 length = strlen(subject);
3890                 if (length > 0) {
3891                         long i;
3892                         long IsAscii;
3893                         IsAscii = -1;
3894                         i = 0;
3895                         while ((subject[i] != '\0') &&
3896                                (IsAscii = isascii(subject[i]) != 0 ))
3897                                 i++;
3898                         if (IsAscii != 0)
3899                                 msg->cm_fields['U'] = strdup(subject);
3900                         else /* ok, we've got utf8 in the string. */
3901                         {
3902                                 msg->cm_fields['U'] = rfc2047encode(subject, length);
3903                         }
3904
3905                 }
3906         }
3907
3908         if (supplied_euid != NULL) {
3909                 msg->cm_fields['E'] = strdup(supplied_euid);
3910         }
3911
3912         if ((references != NULL) && (!IsEmptyStr(references))) {
3913                 if (msg->cm_fields['W'] != NULL)
3914                         free(msg->cm_fields['W']);
3915                 msg->cm_fields['W'] = strdup(references);
3916         }
3917
3918         if (preformatted_text != NULL) {
3919                 msg->cm_fields['M'] = preformatted_text;
3920         }
3921         else {
3922                 msg->cm_fields['M'] = CtdlReadMessageBody(HKEY("000"), config.c_maxmsglen, NULL, 0, 0);
3923         }
3924
3925         return(msg);
3926 }
3927
3928 extern int netconfig_check_roomaccess(
3929         char *errmsgbuf,
3930         size_t n,
3931         const char* RemoteIdentifier); /* TODO: find a smarter way */
3932
3933 /*
3934  * Check to see whether we have permission to post a message in the current
3935  * room.  Returns a *CITADEL ERROR CODE* and puts a message in errmsgbuf, or
3936  * returns 0 on success.
3937  */
3938 int CtdlDoIHavePermissionToPostInThisRoom(
3939         char *errmsgbuf,
3940         size_t n,
3941         const char* RemoteIdentifier,
3942         int PostPublic,
3943         int is_reply
3944         ) {
3945         int ra;
3946
3947         if (!(CC->logged_in) &&
3948             (PostPublic == POST_LOGGED_IN)) {
3949                 snprintf(errmsgbuf, n, "Not logged in.");
3950                 return (ERROR + NOT_LOGGED_IN);
3951         }
3952         else if (PostPublic == CHECK_EXISTANCE) {
3953                 return (0); // We're Evaling whether a recipient exists
3954         }
3955         else if (!(CC->logged_in)) {
3956
3957                 if ((CC->room.QRflags & QR_READONLY)) {
3958                         snprintf(errmsgbuf, n, "Not logged in.");
3959                         return (ERROR + NOT_LOGGED_IN);
3960                 }
3961                 if (CC->room.QRflags2 & QR2_MODERATED) {
3962                         snprintf(errmsgbuf, n, "Not logged in Moderation feature not yet implemented!");
3963                         return (ERROR + NOT_LOGGED_IN);
3964                 }
3965                 if ((PostPublic!=POST_LMTP) &&(CC->room.QRflags2 & QR2_SMTP_PUBLIC) == 0) {
3966
3967                         return netconfig_check_roomaccess(errmsgbuf, n, RemoteIdentifier);
3968                 }
3969                 return (0);
3970
3971         }
3972
3973         if ((CC->user.axlevel < AxProbU)
3974             && ((CC->room.QRflags & QR_MAILBOX) == 0)) {
3975                 snprintf(errmsgbuf, n, "Need to be validated to enter (except in %s> to sysop)", MAILROOM);
3976                 return (ERROR + HIGHER_ACCESS_REQUIRED);
3977         }
3978
3979         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
3980
3981         if (ra & UA_POSTALLOWED) {
3982                 strcpy(errmsgbuf, "OK to post or reply here");
3983                 return(0);
3984         }
3985
3986         if ( (ra & UA_REPLYALLOWED) && (is_reply) ) {
3987                 /*
3988                  * To be thorough, we ought to check to see if the message they are
3989                  * replying to is actually a valid one in this room, but unless this
3990                  * actually becomes a problem we'll go with high performance instead.
3991                  */
3992                 strcpy(errmsgbuf, "OK to reply here");
3993                 return(0);
3994         }
3995
3996         if ( (ra & UA_REPLYALLOWED) && (!is_reply) ) {
3997                 /* Clarify what happened with a better error message */
3998                 snprintf(errmsgbuf, n, "You may only reply to existing messages here.");
3999                 return (ERROR + HIGHER_ACCESS_REQUIRED);
4000         }
4001
4002         snprintf(errmsgbuf, n, "Higher access is required to post in this room.");
4003         return (ERROR + HIGHER_ACCESS_REQUIRED);
4004
4005 }
4006
4007
4008 /*
4009  * Check to see if the specified user has Internet mail permission
4010  * (returns nonzero if permission is granted)
4011  */
4012 int CtdlCheckInternetMailPermission(struct ctdluser *who) {
4013
4014         /* Do not allow twits to send Internet mail */
4015         if (who->axlevel <= AxProbU) return(0);
4016
4017         /* Globally enabled? */
4018         if (config.c_restrict == 0) return(1);
4019
4020         /* User flagged ok? */
4021         if (who->flags & US_INTERNET) return(2);
4022
4023         /* Aide level access? */
4024         if (who->axlevel >= AxAideU) return(3);
4025
4026         /* No mail for you! */
4027         return(0);
4028 }
4029
4030
4031 /*
4032  * Validate recipients, count delivery types and errors, and handle aliasing
4033  * FIXME check for dupes!!!!!
4034  *
4035  * Returns 0 if all addresses are ok, ret->num_error = -1 if no addresses
4036  * were specified, or the number of addresses found invalid.
4037  *
4038  * Caller needs to free the result using free_recipients()
4039  */
4040 struct recptypes *validate_recipients(const char *supplied_recipients,
4041                                       const char *RemoteIdentifier,
4042                                       int Flags) {
4043         struct recptypes *ret;
4044         char *recipients = NULL;
4045         char *org_recp;
4046         char this_recp[256];
4047         char this_recp_cooked[256];
4048         char append[SIZ];
4049         long len;
4050         int num_recps = 0;
4051         int i, j;
4052         int mailtype;
4053         int invalid;
4054         struct ctdluser tempUS;
4055         struct ctdlroom tempQR;
4056         struct ctdlroom tempQR2;
4057         int err = 0;
4058         char errmsg[SIZ];
4059         int in_quotes = 0;
4060
4061         /* Initialize */
4062         ret = (struct recptypes *) malloc(sizeof(struct recptypes));
4063         if (ret == NULL) return(NULL);
4064
4065         /* Set all strings to null and numeric values to zero */
4066         memset(ret, 0, sizeof(struct recptypes));
4067
4068         if (supplied_recipients == NULL) {
4069                 recipients = strdup("");
4070         }
4071         else {
4072                 recipients = strdup(supplied_recipients);
4073         }
4074
4075         /* Allocate some memory.  Yes, this allocates 500% more memory than we will
4076          * actually need, but it's healthier for the heap than doing lots of tiny
4077          * realloc() calls instead.
4078          */
4079         len = strlen(recipients) + 1024;
4080         ret->errormsg = malloc(len);
4081         ret->recp_local = malloc(len);
4082         ret->recp_internet = malloc(len);
4083         ret->recp_ignet = malloc(len);
4084         ret->recp_room = malloc(len);
4085         ret->display_recp = malloc(len);
4086         ret->recp_orgroom = malloc(len);
4087         org_recp = malloc(len);
4088
4089         ret->errormsg[0] = 0;
4090         ret->recp_local[0] = 0;
4091         ret->recp_internet[0] = 0;
4092         ret->recp_ignet[0] = 0;
4093         ret->recp_room[0] = 0;
4094         ret->recp_orgroom[0] = 0;
4095         ret->display_recp[0] = 0;
4096
4097         ret->recptypes_magic = RECPTYPES_MAGIC;
4098
4099         /* Change all valid separator characters to commas */
4100         for (i=0; !IsEmptyStr(&recipients[i]); ++i) {
4101                 if ((recipients[i] == ';') || (recipients[i] == '|')) {
4102                         recipients[i] = ',';
4103                 }
4104         }
4105
4106         /* Now start extracting recipients... */
4107
4108         while (!IsEmptyStr(recipients)) {
4109                 for (i=0; i<=strlen(recipients); ++i) {
4110                         if (recipients[i] == '\"') in_quotes = 1 - in_quotes;
4111                         if ( ( (recipients[i] == ',') && (!in_quotes) ) || (recipients[i] == 0) ) {
4112                                 safestrncpy(this_recp, recipients, i+1);
4113                                 this_recp[i] = 0;
4114                                 if (recipients[i] == ',') {
4115                                         strcpy(recipients, &recipients[i+1]);
4116                                 }
4117                                 else {
4118                                         strcpy(recipients, "");
4119                                 }
4120                                 break;
4121                         }
4122                 }
4123
4124                 striplt(this_recp);
4125                 if (IsEmptyStr(this_recp))
4126                         break;
4127                 syslog(LOG_DEBUG, "Evaluating recipient #%d: %s\n", num_recps, this_recp);
4128                 ++num_recps;
4129
4130                 strcpy(org_recp, this_recp);
4131                 mailtype = alias(this_recp);
4132                 mailtype = alias(this_recp);
4133                 mailtype = alias(this_recp);
4134                 j = 0;
4135                 for (j=0; !IsEmptyStr(&this_recp[j]); ++j) {
4136                         if (this_recp[j]=='_') {
4137                                 this_recp_cooked[j] = ' ';
4138                         }
4139                         else {
4140                                 this_recp_cooked[j] = this_recp[j];
4141                         }
4142                 }
4143                 this_recp_cooked[j] = '\0';
4144                 invalid = 0;
4145                 errmsg[0] = 0;
4146                 switch(mailtype) {
4147                 case MES_LOCAL:
4148                         if (!strcasecmp(this_recp, "sysop")) {
4149                                 ++ret->num_room;
4150                                 strcpy(this_recp, config.c_aideroom);
4151                                 if (!IsEmptyStr(ret->recp_room)) {
4152                                         strcat(ret->recp_room, "|");
4153                                 }
4154                                 strcat(ret->recp_room, this_recp);
4155                         }
4156                         else if ( (!strncasecmp(this_recp, "room_", 5))
4157                                   && (!CtdlGetRoom(&tempQR, &this_recp_cooked[5])) ) {
4158
4159                                 /* Save room so we can restore it later */
4160                                 tempQR2 = CC->room;
4161                                 CC->room = tempQR;
4162
4163                                 /* Check permissions to send mail to this room */
4164                                 err = CtdlDoIHavePermissionToPostInThisRoom(
4165                                         errmsg,
4166                                         sizeof errmsg,
4167                                         RemoteIdentifier,
4168                                         Flags,
4169                                         0                       /* 0 = not a reply */
4170                                         );
4171                                 if (err)
4172                                 {
4173                                         ++ret->num_error;
4174                                         invalid = 1;
4175                                 }
4176                                 else {
4177                                         ++ret->num_room;
4178                                         if (!IsEmptyStr(ret->recp_room)) {
4179                                                 strcat(ret->recp_room, "|");
4180                                         }
4181                                         strcat(ret->recp_room, &this_recp_cooked[5]);
4182
4183                                         if (!IsEmptyStr(ret->recp_orgroom)) {
4184                                                 strcat(ret->recp_orgroom, "|");
4185                                         }
4186                                         strcat(ret->recp_orgroom, org_recp);
4187
4188                                 }
4189
4190                                 /* Restore room in case something needs it */
4191                                 CC->room = tempQR2;
4192
4193                         }
4194                         else if (CtdlGetUser(&tempUS, this_recp) == 0) {
4195                                 ++ret->num_local;
4196                                 strcpy(this_recp, tempUS.fullname);
4197                                 if (!IsEmptyStr(ret->recp_local)) {
4198                                         strcat(ret->recp_local, "|");
4199                                 }
4200                                 strcat(ret->recp_local, this_recp);
4201                         }
4202                         else if (CtdlGetUser(&tempUS, this_recp_cooked) == 0) {
4203                                 ++ret->num_local;
4204                                 strcpy(this_recp, tempUS.fullname);
4205                                 if (!IsEmptyStr(ret->recp_local)) {
4206                                         strcat(ret->recp_local, "|");
4207                                 }
4208                                 strcat(ret->recp_local, this_recp);
4209                         }
4210                         else {
4211                                 ++ret->num_error;
4212                                 invalid = 1;
4213                         }
4214                         break;
4215                 case MES_INTERNET:
4216                         /* Yes, you're reading this correctly: if the target
4217                          * domain points back to the local system or an attached
4218                          * Citadel directory, the address is invalid.  That's
4219                          * because if the address were valid, we would have
4220                          * already translated it to a local address by now.
4221                          */
4222                         if (IsDirectory(this_recp, 0)) {
4223                                 ++ret->num_error;
4224                                 invalid = 1;
4225                         }
4226                         else {
4227                                 ++ret->num_internet;
4228                                 if (!IsEmptyStr(ret->recp_internet)) {
4229                                         strcat(ret->recp_internet, "|");
4230                                 }
4231                                 strcat(ret->recp_internet, this_recp);
4232                         }
4233                         break;
4234                 case MES_IGNET:
4235                         ++ret->num_ignet;
4236                         if (!IsEmptyStr(ret->recp_ignet)) {
4237                                 strcat(ret->recp_ignet, "|");
4238                         }
4239                         strcat(ret->recp_ignet, this_recp);
4240                         break;
4241                 case MES_ERROR:
4242                         ++ret->num_error;
4243                         invalid = 1;
4244                         break;
4245                 }
4246                 if (invalid) {
4247                         if (IsEmptyStr(errmsg)) {
4248                                 snprintf(append, sizeof append, "Invalid recipient: %s", this_recp);
4249                         }
4250                         else {
4251                                 snprintf(append, sizeof append, "%s", errmsg);
4252                         }
4253                         if ( (strlen(ret->errormsg) + strlen(append) + 3) < SIZ) {
4254                                 if (!IsEmptyStr(ret->errormsg)) {
4255                                         strcat(ret->errormsg, "; ");
4256                                 }
4257                                 strcat(ret->errormsg, append);
4258                         }
4259                 }
4260                 else {
4261                         if (IsEmptyStr(ret->display_recp)) {
4262                                 strcpy(append, this_recp);
4263                         }
4264                         else {
4265                                 snprintf(append, sizeof append, ", %s", this_recp);
4266                         }
4267                         if ( (strlen(ret->display_recp)+strlen(append)) < SIZ) {
4268                                 strcat(ret->display_recp, append);
4269                         }
4270                 }
4271         }
4272         free(org_recp);
4273
4274         if ((ret->num_local + ret->num_internet + ret->num_ignet +
4275              ret->num_room + ret->num_error) == 0) {
4276                 ret->num_error = (-1);
4277                 strcpy(ret->errormsg, "No recipients specified.");
4278         }
4279
4280         syslog(LOG_DEBUG, "validate_recipients()\n");
4281         syslog(LOG_DEBUG, " local: %d <%s>\n", ret->num_local, ret->recp_local);
4282         syslog(LOG_DEBUG, "  room: %d <%s>\n", ret->num_room, ret->recp_room);
4283         syslog(LOG_DEBUG, "  inet: %d <%s>\n", ret->num_internet, ret->recp_internet);
4284         syslog(LOG_DEBUG, " ignet: %d <%s>\n", ret->num_ignet, ret->recp_ignet);
4285         syslog(LOG_DEBUG, " error: %d <%s>\n", ret->num_error, ret->errormsg);
4286
4287         free(recipients);
4288         return(ret);
4289 }
4290
4291
4292 /*
4293  * Destructor for struct recptypes
4294  */
4295 void free_recipients(struct recptypes *valid) {
4296
4297         if (valid == NULL) {
4298                 return;
4299         }
4300
4301         if (valid->recptypes_magic != RECPTYPES_MAGIC) {
4302                 syslog(LOG_EMERG, "Attempt to call free_recipients() on some other data type!\n");
4303                 abort();
4304         }
4305
4306         if (valid->errormsg != NULL)            free(valid->errormsg);
4307         if (valid->recp_local != NULL)          free(valid->recp_local);
4308         if (valid->recp_internet != NULL)       free(valid->recp_internet);
4309         if (valid->recp_ignet != NULL)          free(valid->recp_ignet);
4310         if (valid->recp_room != NULL)           free(valid->recp_room);
4311         if (valid->recp_orgroom != NULL)        free(valid->recp_orgroom);
4312         if (valid->display_recp != NULL)        free(valid->display_recp);
4313         if (valid->bounce_to != NULL)           free(valid->bounce_to);
4314         if (valid->envelope_from != NULL)       free(valid->envelope_from);
4315         if (valid->sending_room != NULL)        free(valid->sending_room);
4316         free(valid);
4317 }
4318
4319
4320
4321 /*
4322  * message entry  -  mode 0 (normal)
4323  */
4324 void cmd_ent0(char *entargs)
4325 {
4326         struct CitContext *CCC = CC;
4327         int post = 0;
4328         char recp[SIZ];
4329         char cc[SIZ];
4330         char bcc[SIZ];
4331         char supplied_euid[128];
4332         int anon_flag = 0;
4333         int format_type = 0;
4334         char newusername[256];
4335         char newuseremail[256];
4336         struct CtdlMessage *msg;
4337         int anonymous = 0;
4338         char errmsg[SIZ];
4339         int err = 0;
4340         struct recptypes *valid = NULL;
4341         struct recptypes *valid_to = NULL;
4342         struct recptypes *valid_cc = NULL;
4343         struct recptypes *valid_bcc = NULL;
4344         char subject[SIZ];
4345         int subject_required = 0;
4346         int do_confirm = 0;
4347         int verbose_reply = 0;
4348         long msgnum;
4349         int i, j;
4350         char buf[256];
4351         int newuseremail_ok = 0;
4352         char references[SIZ];
4353         char *ptr;
4354
4355         unbuffer_output();
4356
4357         post = extract_int(entargs, 0);
4358         extract_token(recp, entargs, 1, '|', sizeof recp);
4359         anon_flag = extract_int(entargs, 2);
4360         format_type = extract_int(entargs, 3);
4361         extract_token(subject, entargs, 4, '|', sizeof subject);
4362         extract_token(newusername, entargs, 5, '|', sizeof newusername);
4363         do_confirm = extract_int(entargs, 6);
4364         extract_token(cc, entargs, 7, '|', sizeof cc);
4365         extract_token(bcc, entargs, 8, '|', sizeof bcc);
4366         verbose_reply = extract_int(entargs, 9);
4367         switch(CC->room.QRdefaultview) {
4368         case VIEW_NOTES:
4369         case VIEW_WIKI:
4370                 extract_token(supplied_euid, entargs, 9, '|', sizeof supplied_euid);
4371                 break;
4372         default:
4373                 supplied_euid[0] = 0;
4374                 break;
4375         }
4376         extract_token(newuseremail, entargs, 10, '|', sizeof newuseremail);
4377         extract_token(references, entargs, 11, '|', sizeof references);
4378         for (ptr=references; *ptr != 0; ++ptr) {
4379                 if (*ptr == '!') *ptr = '|';
4380         }
4381
4382         /* first check to make sure the request is valid. */
4383
4384         err = CtdlDoIHavePermissionToPostInThisRoom(
4385                 errmsg,
4386                 sizeof errmsg,
4387                 NULL,
4388                 POST_LOGGED_IN,
4389                 (!IsEmptyStr(references))               /* is this a reply?  or a top-level post? */
4390                 );
4391         if (err)
4392         {
4393                 cprintf("%d %s\n", err, errmsg);
4394                 return;
4395         }
4396
4397         /* Check some other permission type things. */
4398
4399         if (IsEmptyStr(newusername)) {
4400                 strcpy(newusername, CCC->user.fullname);
4401         }
4402         if (  (CCC->user.axlevel < AxAideU)
4403               && (strcasecmp(newusername, CCC->user.fullname))
4404               && (strcasecmp(newusername, CCC->cs_inet_fn))
4405                 ) {
4406                 cprintf("%d You don't have permission to author messages as '%s'.\n",
4407                         ERROR + HIGHER_ACCESS_REQUIRED,
4408                         newusername
4409                         );
4410                 return;
4411         }
4412
4413
4414         if (IsEmptyStr(newuseremail)) {
4415                 newuseremail_ok = 1;
4416         }
4417
4418         if (!IsEmptyStr(newuseremail)) {
4419                 if (!strcasecmp(newuseremail, CCC->cs_inet_email)) {
4420                         newuseremail_ok = 1;
4421                 }
4422                 else if (!IsEmptyStr(CCC->cs_inet_other_emails)) {
4423                         j = num_tokens(CCC->cs_inet_other_emails, '|');
4424                         for (i=0; i<j; ++i) {
4425                                 extract_token(buf, CCC->cs_inet_other_emails, i, '|', sizeof buf);
4426                                 if (!strcasecmp(newuseremail, buf)) {
4427                                         newuseremail_ok = 1;
4428                                 }
4429                         }
4430                 }
4431         }
4432
4433         if (!newuseremail_ok) {
4434                 cprintf("%d You don't have permission to author messages as '%s'.\n",
4435                         ERROR + HIGHER_ACCESS_REQUIRED,
4436                         newuseremail
4437                         );
4438                 return;
4439         }
4440
4441         CCC->cs_flags |= CS_POSTING;
4442
4443         /* In mailbox rooms we have to behave a little differently --
4444          * make sure the user has specified at least one recipient.  Then
4445          * validate the recipient(s).  We do this for the Mail> room, as
4446          * well as any room which has the "Mailbox" view set - unless it
4447          * is the DRAFTS room which does not require recipients
4448          */
4449
4450         if ( (  ( (CCC->room.QRflags & QR_MAILBOX) && (!strcasecmp(&CCC->room.QRname[11], MAILROOM)) )
4451                 || ( (CCC->room.QRflags & QR_MAILBOX) && (CCC->curr_view == VIEW_MAILBOX) )
4452                      ) && (strcasecmp(&CCC->room.QRname[11], USERDRAFTROOM)) !=0 ) {
4453                 if (CCC->user.axlevel < AxProbU) {
4454                         strcpy(recp, "sysop");
4455                         strcpy(cc, "");
4456                         strcpy(bcc, "");
4457                 }
4458
4459                 valid_to = validate_recipients(recp, NULL, 0);
4460                 if (valid_to->num_error > 0) {
4461                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_to->errormsg);
4462                         free_recipients(valid_to);
4463                         return;
4464                 }
4465
4466                 valid_cc = validate_recipients(cc, NULL, 0);
4467                 if (valid_cc->num_error > 0) {
4468                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_cc->errormsg);
4469                         free_recipients(valid_to);
4470                         free_recipients(valid_cc);
4471                         return;
4472                 }
4473
4474                 valid_bcc = validate_recipients(bcc, NULL, 0);
4475                 if (valid_bcc->num_error > 0) {
4476                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_bcc->errormsg);
4477                         free_recipients(valid_to);
4478                         free_recipients(valid_cc);
4479                         free_recipients(valid_bcc);
4480                         return;
4481                 }
4482
4483                 /* Recipient required, but none were specified */
4484                 if ( (valid_to->num_error < 0) && (valid_cc->num_error < 0) && (valid_bcc->num_error < 0) ) {
4485                         free_recipients(valid_to);
4486                         free_recipients(valid_cc);
4487                         free_recipients(valid_bcc);
4488                         cprintf("%d At least one recipient is required.\n", ERROR + NO_SUCH_USER);
4489                         return;
4490                 }
4491
4492                 if (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0) {
4493                         if (CtdlCheckInternetMailPermission(&CCC->user)==0) {
4494                                 cprintf("%d You do not have permission "
4495                                         "to send Internet mail.\n",
4496                                         ERROR + HIGHER_ACCESS_REQUIRED);
4497                                 free_recipients(valid_to);
4498                                 free_recipients(valid_cc);
4499                                 free_recipients(valid_bcc);
4500                                 return;
4501                         }
4502                 }
4503
4504                 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)
4505                      && (CCC->user.axlevel < AxNetU) ) {
4506                         cprintf("%d Higher access required for network mail.\n",
4507                                 ERROR + HIGHER_ACCESS_REQUIRED);
4508                         free_recipients(valid_to);
4509                         free_recipients(valid_cc);
4510                         free_recipients(valid_bcc);
4511                         return;
4512                 }
4513
4514                 if ((RESTRICT_INTERNET == 1)
4515                     && (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0)
4516                     && ((CCC->user.flags & US_INTERNET) == 0)
4517                     && (!CCC->internal_pgm)) {
4518                         cprintf("%d You don't have access to Internet mail.\n",
4519                                 ERROR + HIGHER_ACCESS_REQUIRED);
4520                         free_recipients(valid_to);
4521                         free_recipients(valid_cc);
4522                         free_recipients(valid_bcc);
4523                         return;
4524                 }
4525
4526         }
4527
4528         /* Is this a room which has anonymous-only or anonymous-option? */
4529         anonymous = MES_NORMAL;
4530         if (CCC->room.QRflags & QR_ANONONLY) {
4531                 anonymous = MES_ANONONLY;
4532         }
4533         if (CCC->room.QRflags & QR_ANONOPT) {
4534                 if (anon_flag == 1) {   /* only if the user requested it */
4535                         anonymous = MES_ANONOPT;
4536                 }
4537         }
4538
4539         if ((CCC->room.QRflags & QR_MAILBOX) == 0) {
4540                 recp[0] = 0;
4541         }
4542
4543         /* Recommend to the client that the use of a message subject is
4544          * strongly recommended in this room, if either the SUBJECTREQ flag
4545          * is set, or if there is one or more Internet email recipients.
4546          */
4547         if (CCC->room.QRflags2 & QR2_SUBJECTREQ) subject_required = 1;
4548         if ((valid_to)  && (valid_to->num_internet > 0))        subject_required = 1;
4549         if ((valid_cc)  && (valid_cc->num_internet > 0))        subject_required = 1;
4550         if ((valid_bcc) && (valid_bcc->num_internet > 0))       subject_required = 1;
4551
4552         /* If we're only checking the validity of the request, return
4553          * success without creating the message.
4554          */
4555         if (post == 0) {
4556                 cprintf("%d %s|%d\n", CIT_OK,
4557                         ((valid_to != NULL) ? valid_to->display_recp : ""),
4558                         subject_required);
4559                 free_recipients(valid_to);
4560                 free_recipients(valid_cc);
4561                 free_recipients(valid_bcc);
4562                 return;
4563         }
4564
4565         /* We don't need these anymore because we'll do it differently below */
4566         free_recipients(valid_to);
4567         free_recipients(valid_cc);
4568         free_recipients(valid_bcc);
4569
4570         /* Read in the message from the client. */
4571         if (do_confirm) {
4572                 cprintf("%d send message\n", START_CHAT_MODE);
4573         } else {
4574                 cprintf("%d send message\n", SEND_LISTING);
4575         }
4576
4577         msg = CtdlMakeMessage(&CCC->user, recp, cc,
4578                               CCC->room.QRname, anonymous, format_type,
4579                               newusername, newuseremail, subject,
4580                               ((!IsEmptyStr(supplied_euid)) ? supplied_euid : NULL),
4581                               NULL, references);
4582
4583         /* Put together one big recipients struct containing to/cc/bcc all in
4584          * one.  This is for the envelope.
4585          */
4586         char *all_recps = malloc(SIZ * 3);
4587         strcpy(all_recps, recp);
4588         if (!IsEmptyStr(cc)) {
4589                 if (!IsEmptyStr(all_recps)) {
4590                         strcat(all_recps, ",");
4591                 }
4592                 strcat(all_recps, cc);
4593         }
4594         if (!IsEmptyStr(bcc)) {
4595                 if (!IsEmptyStr(all_recps)) {
4596                         strcat(all_recps, ",");
4597                 }
4598                 strcat(all_recps, bcc);
4599         }
4600         if (!IsEmptyStr(all_recps)) {
4601                 valid = validate_recipients(all_recps, NULL, 0);
4602         }
4603         else {
4604                 valid = NULL;
4605         }
4606         free(all_recps);
4607
4608         if ((valid != NULL) && (valid->num_room == 1))
4609         {
4610                 /* posting into an ML room? set the envelope from
4611                  * to the actual mail address so others get a valid
4612                  * reply-to-header.
4613                  */
4614                 msg->cm_fields['V'] = strdup(valid->recp_orgroom);
4615         }
4616
4617         if (msg != NULL) {
4618                 msgnum = CtdlSubmitMsg(msg, valid, "", QP_EADDR);
4619                 if (verbose_reply)
4620                 {
4621                         if (StrLength(CCC->StatusMessage)>0)
4622                         {
4623                                 StrBufAppendBufPlain(CCC->StatusMessage, HKEY("\n000\n"), 0);
4624                                 cputbuf(CCC->StatusMessage);
4625                         }
4626                         else
4627                                 client_write(HKEY("\n000\n"));
4628                 }
4629
4630                 if (do_confirm) {
4631                         cprintf("%ld\n", msgnum);
4632                         if (msgnum >= 0L) {
4633                                 client_write(HKEY("Message accepted.\n"));
4634                         }
4635                         else {
4636                                 client_write(HKEY("Internal error.\n"));
4637                         }
4638                         if (msg->cm_fields['E'] != NULL) {
4639                                 cprintf("%s\n", msg->cm_fields['E']);
4640                         } else {
4641                                 cprintf("\n");
4642                         }
4643                         cprintf("000\n");
4644                 }
4645
4646                 CtdlFreeMessage(msg);
4647         }
4648         if (valid != NULL) {
4649                 free_recipients(valid);
4650         }
4651         return;
4652 }
4653
4654
4655
4656 /*
4657  * API function to delete messages which match a set of criteria
4658  * (returns the actual number of messages deleted)
4659  */
4660 int CtdlDeleteMessages(char *room_name,         /* which room */
4661                        long *dmsgnums,          /* array of msg numbers to be deleted */
4662                        int num_dmsgnums,        /* number of msgs to be deleted, or 0 for "any" */
4663                        char *content_type       /* or "" for any.  regular expressions expected. */
4664         )
4665 {
4666         struct ctdlroom qrbuf;
4667         struct cdbdata *cdbfr;
4668         long *msglist = NULL;
4669         long *dellist = NULL;
4670         int num_msgs = 0;
4671         int i, j;
4672         int num_deleted = 0;
4673         int delete_this;
4674         struct MetaData smi;
4675         regex_t re;
4676         regmatch_t pm;
4677         int need_to_free_re = 0;
4678
4679         if (content_type) if (!IsEmptyStr(content_type)) {
4680                         regcomp(&re, content_type, 0);
4681                         need_to_free_re = 1;
4682                 }
4683         syslog(LOG_DEBUG, "CtdlDeleteMessages(%s, %d msgs, %s)\n",
4684                room_name, num_dmsgnums, content_type);
4685
4686         /* get room record, obtaining a lock... */
4687         if (CtdlGetRoomLock(&qrbuf, room_name) != 0) {
4688                 syslog(LOG_ERR, "CtdlDeleteMessages(): Room <%s> not found\n",
4689                        room_name);
4690                 if (need_to_free_re) regfree(&re);
4691                 return (0);     /* room not found */
4692         }
4693         cdbfr = cdb_fetch(CDB_MSGLISTS, &qrbuf.QRnumber, sizeof(long));
4694
4695         if (cdbfr != NULL) {
4696                 dellist = malloc(cdbfr->len);
4697                 msglist = (long *) cdbfr->ptr;
4698                 cdbfr->ptr = NULL;      /* CtdlDeleteMessages() now owns this memory */
4699                 num_msgs = cdbfr->len / sizeof(long);
4700                 cdb_free(cdbfr);
4701         }
4702         if (num_msgs > 0) {
4703                 int have_contenttype = !IsEmptyStr(content_type);
4704                 int have_delmsgs = (num_dmsgnums == 0) || (dmsgnums == NULL);
4705                 int have_more_del = 1;
4706
4707                 num_msgs = sort_msglist(msglist, num_msgs);
4708                 if (num_dmsgnums > 1)
4709                         num_dmsgnums = sort_msglist(dmsgnums, num_dmsgnums);
4710 /*
4711                 {
4712                         StrBuf *dbg = NewStrBuf();
4713                         for (i = 0; i < num_dmsgnums; i++)
4714                                 StrBufAppendPrintf(dbg, ", %ld", dmsgnums[i]);
4715                         syslog(LOG_DEBUG, "Deleting before: %s", ChrPtr(dbg));
4716                         FreeStrBuf(&dbg);
4717                 }
4718 */
4719                 i = 0; j = 0;
4720                 while ((i < num_msgs) && (have_more_del)) {
4721                         delete_this = 0x00;
4722
4723
4724                         /* Set/clear a bit for each criterion */
4725
4726                         /* 0 messages in the list or a null list means that we are
4727                          * interested in deleting any messages which meet the other criteria.
4728                          */
4729                         if (have_delmsgs) {
4730                                 delete_this |= 0x01;
4731                         }
4732                         else {
4733                                 while ((i < num_msgs) && (msglist[i] < dmsgnums[j])) i++;
4734                                 if (msglist[i] == dmsgnums[j]) {
4735                                         delete_this |= 0x01;
4736                                 }
4737                                 j++;
4738                                 have_more_del = (j < num_dmsgnums);
4739                         }
4740
4741                         if (have_contenttype) {
4742                                 GetMetaData(&smi, msglist[i]);
4743                                 if (regexec(&re, smi.meta_content_type, 1, &pm, 0) == 0) {
4744                                         delete_this |= 0x02;
4745                                 }
4746                         } else {
4747                                 delete_this |= 0x02;
4748                         }
4749
4750                         /* Delete message only if all bits are set */
4751                         if (delete_this == 0x03) {
4752                                 dellist[num_deleted++] = msglist[i];
4753                                 msglist[i] = 0L;
4754                         }
4755                         i++;
4756                 }
4757 /*
4758                 {
4759                         StrBuf *dbg = NewStrBuf();
4760                         for (i = 0; i < num_deleted; i++)
4761                                 StrBufAppendPrintf(dbg, ", %ld", dellist[i]);
4762                         syslog(LOG_DEBUG, "Deleting: %s", ChrPtr(dbg));
4763                         FreeStrBuf(&dbg);
4764                 }
4765 */
4766                 num_msgs = sort_msglist(msglist, num_msgs);
4767                 cdb_store(CDB_MSGLISTS, &qrbuf.QRnumber, (int)sizeof(long),
4768                           msglist, (int)(num_msgs * sizeof(long)));
4769
4770                 if (num_msgs > 0)
4771                         qrbuf.QRhighest = msglist[num_msgs - 1];
4772                 else
4773                         qrbuf.QRhighest = 0;
4774         }
4775         CtdlPutRoomLock(&qrbuf);
4776
4777         /* Go through the messages we pulled out of the index, and decrement
4778          * their reference counts by 1.  If this is the only room the message
4779          * was in, the reference count will reach zero and the message will
4780          * automatically be deleted from the database.  We do this in a
4781          * separate pass because there might be plug-in hooks getting called,
4782          * and we don't want that happening during an S_ROOMS critical
4783          * section.
4784          */
4785         if (num_deleted) {
4786                 for (i=0; i<num_deleted; ++i) {
4787                         PerformDeleteHooks(qrbuf.QRname, dellist[i]);
4788                 }
4789                 AdjRefCountList(dellist, num_deleted, -1);
4790         }
4791         /* Now free the memory we used, and go away. */
4792         if (msglist != NULL) free(msglist);
4793         if (dellist != NULL) free(dellist);
4794         syslog(LOG_DEBUG, "%d message(s) deleted.\n", num_deleted);
4795         if (need_to_free_re) regfree(&re);
4796         return (num_deleted);
4797 }
4798
4799
4800
4801 /*
4802  * Check whether the current user has permission to delete messages from
4803  * the current room (returns 1 for yes, 0 for no)
4804  */
4805 int CtdlDoIHavePermissionToDeleteMessagesFromThisRoom(void) {
4806         int ra;
4807         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
4808         if (ra & UA_DELETEALLOWED) return(1);
4809         return(0);
4810 }
4811
4812
4813
4814
4815 /*
4816  * Delete message from current room
4817  */
4818 void cmd_dele(char *args)
4819 {
4820         int num_deleted;
4821         int i;
4822         char msgset[SIZ];
4823         char msgtok[32];
4824         long *msgs;
4825         int num_msgs = 0;
4826
4827         extract_token(msgset, args, 0, '|', sizeof msgset);
4828         num_msgs = num_tokens(msgset, ',');
4829         if (num_msgs < 1) {
4830                 cprintf("%d Nothing to do.\n", CIT_OK);
4831                 return;
4832         }
4833
4834         if (CtdlDoIHavePermissionToDeleteMessagesFromThisRoom() == 0) {
4835                 cprintf("%d Higher access required.\n",
4836                         ERROR + HIGHER_ACCESS_REQUIRED);
4837                 return;
4838         }
4839
4840         /*
4841          * Build our message set to be moved/copied
4842          */
4843         msgs = malloc(num_msgs * sizeof(long));
4844         for (i=0; i<num_msgs; ++i) {
4845                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4846                 msgs[i] = atol(msgtok);
4847         }
4848
4849         num_deleted = CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4850         free(msgs);
4851
4852         if (num_deleted) {
4853                 cprintf("%d %d message%s deleted.\n", CIT_OK,
4854                         num_deleted, ((num_deleted != 1) ? "s" : ""));
4855         } else {
4856                 cprintf("%d Message not found.\n", ERROR + MESSAGE_NOT_FOUND);
4857         }
4858 }
4859
4860
4861
4862
4863 /*
4864  * move or copy a message to another room
4865  */
4866 void cmd_move(char *args)
4867 {
4868         char msgset[SIZ];
4869         char msgtok[32];
4870         long *msgs;
4871         int num_msgs = 0;
4872
4873         char targ[ROOMNAMELEN];
4874         struct ctdlroom qtemp;
4875         int err;
4876         int is_copy = 0;
4877         int ra;
4878         int permit = 0;
4879         int i;
4880
4881         extract_token(msgset, args, 0, '|', sizeof msgset);
4882         num_msgs = num_tokens(msgset, ',');
4883         if (num_msgs < 1) {
4884                 cprintf("%d Nothing to do.\n", CIT_OK);
4885                 return;
4886         }
4887
4888         extract_token(targ, args, 1, '|', sizeof targ);
4889         convert_room_name_macros(targ, sizeof targ);
4890         targ[ROOMNAMELEN - 1] = 0;
4891         is_copy = extract_int(args, 2);
4892
4893         if (CtdlGetRoom(&qtemp, targ) != 0) {
4894                 cprintf("%d '%s' does not exist.\n", ERROR + ROOM_NOT_FOUND, targ);
4895                 return;
4896         }
4897
4898         if (!strcasecmp(qtemp.QRname, CC->room.QRname)) {
4899                 cprintf("%d Source and target rooms are the same.\n", ERROR + ALREADY_EXISTS);
4900                 return;
4901         }
4902
4903         CtdlGetUser(&CC->user, CC->curr_user);
4904         CtdlRoomAccess(&qtemp, &CC->user, &ra, NULL);
4905
4906         /* Check for permission to perform this operation.
4907          * Remember: "CC->room" is source, "qtemp" is target.
4908          */
4909         permit = 0;
4910
4911         /* Aides can move/copy */
4912         if (CC->user.axlevel >= AxAideU) permit = 1;
4913
4914         /* Room aides can move/copy */
4915         if (CC->user.usernum == CC->room.QRroomaide) permit = 1;
4916
4917         /* Permit move/copy from personal rooms */
4918         if ((CC->room.QRflags & QR_MAILBOX)
4919             && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
4920
4921         /* Permit only copy from public to personal room */
4922         if ( (is_copy)
4923              && (!(CC->room.QRflags & QR_MAILBOX))
4924              && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
4925
4926         /* Permit message removal from collaborative delete rooms */
4927         if (CC->room.QRflags2 & QR2_COLLABDEL) permit = 1;
4928
4929         /* Users allowed to post into the target room may move into it too. */
4930         if ((CC->room.QRflags & QR_MAILBOX) &&
4931             (qtemp.QRflags & UA_POSTALLOWED))  permit = 1;
4932
4933         /* User must have access to target room */
4934         if (!(ra & UA_KNOWN))  permit = 0;
4935
4936         if (!permit) {
4937                 cprintf("%d Higher access required.\n",
4938                         ERROR + HIGHER_ACCESS_REQUIRED);
4939                 return;
4940         }
4941
4942         /*
4943          * Build our message set to be moved/copied
4944          */
4945         msgs = malloc(num_msgs * sizeof(long));
4946         for (i=0; i<num_msgs; ++i) {
4947                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4948                 msgs[i] = atol(msgtok);
4949         }
4950
4951         /*
4952          * Do the copy
4953          */
4954         err = CtdlSaveMsgPointersInRoom(targ, msgs, num_msgs, 1, NULL, 0);
4955         if (err != 0) {
4956                 cprintf("%d Cannot store message(s) in %s: error %d\n",
4957                         err, targ, err);
4958                 free(msgs);
4959                 return;
4960         }
4961
4962         /* Now delete the message from the source room,
4963          * if this is a 'move' rather than a 'copy' operation.
4964          */
4965         if (is_copy == 0) {
4966                 CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4967         }
4968         free(msgs);
4969
4970         cprintf("%d Message(s) %s.\n", CIT_OK, (is_copy ? "copied" : "moved") );
4971 }
4972
4973
4974
4975 /*
4976  * GetMetaData()  -  Get the supplementary record for a message
4977  */
4978 void GetMetaData(struct MetaData *smibuf, long msgnum)
4979 {
4980
4981         struct cdbdata *cdbsmi;
4982         long TheIndex;
4983
4984         memset(smibuf, 0, sizeof(struct MetaData));
4985         smibuf->meta_msgnum = msgnum;
4986         smibuf->meta_refcount = 1;      /* Default reference count is 1 */
4987
4988         /* Use the negative of the message number for its supp record index */
4989         TheIndex = (0L - msgnum);
4990
4991         cdbsmi = cdb_fetch(CDB_MSGMAIN, &TheIndex, sizeof(long));
4992         if (cdbsmi == NULL) {
4993                 return;         /* record not found; go with defaults */
4994         }
4995         memcpy(smibuf, cdbsmi->ptr,
4996                ((cdbsmi->len > sizeof(struct MetaData)) ?
4997                 sizeof(struct MetaData) : cdbsmi->len));
4998         cdb_free(cdbsmi);
4999         return;
5000 }
5001
5002
5003 /*
5004  * PutMetaData()  -  (re)write supplementary record for a message
5005  */
5006 void PutMetaData(struct MetaData *smibuf)
5007 {
5008         long TheIndex;
5009
5010         /* Use the negative of the message number for the metadata db index */
5011         TheIndex = (0L - smibuf->meta_msgnum);
5012
5013         cdb_store(CDB_MSGMAIN,
5014                   &TheIndex, (int)sizeof(long),
5015                   smibuf, (int)sizeof(struct MetaData));
5016
5017 }
5018
5019 /*
5020  * AdjRefCount  -  submit an adjustment to the reference count for a message.
5021  *                 (These are just queued -- we actually process them later.)
5022  */
5023 void AdjRefCount(long msgnum, int incr)
5024 {
5025         struct arcq new_arcq;
5026         int rv = 0;
5027
5028         syslog(LOG_DEBUG, "AdjRefCount() msg %ld ref count delta %+d\n", msgnum, incr);
5029
5030         begin_critical_section(S_SUPPMSGMAIN);
5031         if (arcfp == NULL) {
5032                 arcfp = fopen(file_arcq, "ab+");
5033                 chown(file_arcq, CTDLUID, (-1));
5034                 chmod(file_arcq, 0600);
5035         }
5036         end_critical_section(S_SUPPMSGMAIN);
5037
5038         /* msgnum < 0 means that we're trying to close the file */
5039         if (msgnum < 0) {
5040                 syslog(LOG_DEBUG, "Closing the AdjRefCount queue file\n");
5041                 begin_critical_section(S_SUPPMSGMAIN);
5042                 if (arcfp != NULL) {
5043                         fclose(arcfp);
5044                         arcfp = NULL;
5045                 }
5046                 end_critical_section(S_SUPPMSGMAIN);
5047                 return;
5048         }
5049
5050         /*
5051          * If we can't open the queue, perform the operation synchronously.
5052          */
5053         if (arcfp == NULL) {
5054                 TDAP_AdjRefCount(msgnum, incr);
5055                 return;
5056         }
5057
5058         new_arcq.arcq_msgnum = msgnum;
5059         new_arcq.arcq_delta = incr;
5060         rv = fwrite(&new_arcq, sizeof(struct arcq), 1, arcfp);
5061         if (rv == -1) {
5062                 syslog(LOG_EMERG, "Couldn't write Refcount Queue File %s: %s\n",
5063                        file_arcq,
5064                        strerror(errno));
5065         }
5066         fflush(arcfp);
5067
5068         return;
5069 }
5070
5071 void AdjRefCountList(long *msgnum, long nmsg, int incr)
5072 {
5073         long i, the_size, offset;
5074         struct arcq *new_arcq;
5075         int rv = 0;
5076
5077         syslog(LOG_DEBUG, "AdjRefCountList() msg %ld ref count delta %+d\n", nmsg, incr);
5078
5079         begin_critical_section(S_SUPPMSGMAIN);
5080         if (arcfp == NULL) {
5081                 arcfp = fopen(file_arcq, "ab+");
5082                 chown(file_arcq, CTDLUID, (-1));
5083                 chmod(file_arcq, 0600);
5084         }
5085         end_critical_section(S_SUPPMSGMAIN);
5086
5087         /*
5088          * If we can't open the queue, perform the operation synchronously.
5089          */
5090         if (arcfp == NULL) {
5091                 for (i = 0; i < nmsg; i++)
5092                         TDAP_AdjRefCount(msgnum[i], incr);
5093                 return;
5094         }
5095
5096         the_size = sizeof(struct arcq) * nmsg;
5097         new_arcq = malloc(the_size);
5098         for (i = 0; i < nmsg; i++) {
5099                 new_arcq[i].arcq_msgnum = msgnum[i];
5100                 new_arcq[i].arcq_delta = incr;
5101         }
5102         rv = 0;
5103         offset = 0;
5104         while ((rv >= 0) && (offset < the_size))
5105         {
5106                 rv = fwrite(new_arcq + offset, 1, the_size - offset, arcfp);
5107                 if (rv == -1) {
5108                         syslog(LOG_EMERG, "Couldn't write Refcount Queue File %s: %s\n",
5109                                file_arcq,
5110                                strerror(errno));
5111                 }
5112                 else {
5113                         offset += rv;
5114                 }
5115         }
5116         free(new_arcq);
5117         fflush(arcfp);
5118
5119         return;
5120 }
5121
5122
5123 /*
5124  * TDAP_ProcessAdjRefCountQueue()
5125  *
5126  * Process the queue of message count adjustments that was created by calls
5127  * to AdjRefCount() ... by reading the queue and calling TDAP_AdjRefCount()
5128  * for each one.  This should be an "off hours" operation.
5129  */
5130 int TDAP_ProcessAdjRefCountQueue(void)
5131 {
5132         char file_arcq_temp[PATH_MAX];
5133         int r;
5134         FILE *fp;
5135         struct arcq arcq_rec;
5136         int num_records_processed = 0;
5137
5138         snprintf(file_arcq_temp, sizeof file_arcq_temp, "%s.%04x", file_arcq, rand());
5139
5140         begin_critical_section(S_SUPPMSGMAIN);
5141         if (arcfp != NULL) {
5142                 fclose(arcfp);
5143                 arcfp = NULL;
5144         }
5145
5146         r = link(file_arcq, file_arcq_temp);
5147         if (r != 0) {
5148                 syslog(LOG_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
5149                 end_critical_section(S_SUPPMSGMAIN);
5150                 return(num_records_processed);
5151         }
5152
5153         unlink(file_arcq);
5154         end_critical_section(S_SUPPMSGMAIN);
5155
5156         fp = fopen(file_arcq_temp, "rb");
5157         if (fp == NULL) {
5158                 syslog(LOG_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
5159                 return(num_records_processed);
5160         }
5161
5162         while (fread(&arcq_rec, sizeof(struct arcq), 1, fp) == 1) {
5163                 TDAP_AdjRefCount(arcq_rec.arcq_msgnum, arcq_rec.arcq_delta);
5164                 ++num_records_processed;
5165         }
5166
5167         fclose(fp);
5168         r = unlink(file_arcq_temp);
5169         if (r != 0) {
5170                 syslog(LOG_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
5171         }
5172
5173         return(num_records_processed);
5174 }
5175
5176
5177
5178 /*
5179  * TDAP_AdjRefCount  -  adjust the reference count for a message.
5180  *                      This one does it "for real" because it's called by
5181  *                      the autopurger function that processes the queue
5182  *                      created by AdjRefCount().   If a message's reference
5183  *                      count becomes zero, we also delete the message from
5184  *                      disk and de-index it.
5185  */
5186 void TDAP_AdjRefCount(long msgnum, int incr)
5187 {
5188
5189         struct MetaData smi;
5190         long delnum;
5191
5192         /* This is a *tight* critical section; please keep it that way, as
5193          * it may get called while nested in other critical sections.
5194          * Complicating this any further will surely cause deadlock!
5195          */
5196         begin_critical_section(S_SUPPMSGMAIN);
5197         GetMetaData(&smi, msgnum);
5198         smi.meta_refcount += incr;
5199         PutMetaData(&smi);
5200         end_critical_section(S_SUPPMSGMAIN);
5201         syslog(LOG_DEBUG, "TDAP_AdjRefCount() msg %ld ref count delta %+d, is now %d\n",
5202                msgnum, incr, smi.meta_refcount
5203                 );
5204
5205         /* If the reference count is now zero, delete the message
5206          * (and its supplementary record as well).
5207          */
5208         if (smi.meta_refcount == 0) {
5209                 syslog(LOG_DEBUG, "Deleting message <%ld>\n", msgnum);
5210
5211                 /* Call delete hooks with NULL room to show it has gone altogether */
5212                 PerformDeleteHooks(NULL, msgnum);
5213
5214                 /* Remove from message base */
5215                 delnum = msgnum;
5216                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
5217                 cdb_delete(CDB_BIGMSGS, &delnum, (int)sizeof(long));
5218
5219                 /* Remove metadata record */
5220                 delnum = (0L - msgnum);
5221                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
5222         }
5223
5224 }
5225
5226 /*
5227  * Write a generic object to this room
5228  *
5229  * Note: this could be much more efficient.  Right now we use two temporary
5230  * files, and still pull the message into memory as with all others.
5231  */
5232 void CtdlWriteObject(char *req_room,                    /* Room to stuff it in */
5233                      char *content_type,                /* MIME type of this object */
5234                      char *raw_message,         /* Data to be written */
5235                      off_t raw_length,          /* Size of raw_message */
5236                      struct ctdluser *is_mailbox,       /* Mailbox room? */
5237                      int is_binary,                     /* Is encoding necessary? */
5238                      int is_unique,                     /* Del others of this type? */
5239                      unsigned int flags         /* Internal save flags */
5240         )
5241 {
5242
5243         struct ctdlroom qrbuf;
5244         char roomname[ROOMNAMELEN];
5245         struct CtdlMessage *msg;
5246         char *encoded_message = NULL;
5247
5248         if (is_mailbox != NULL) {
5249                 CtdlMailboxName(roomname, sizeof roomname, is_mailbox, req_room);
5250         }
5251         else {
5252                 safestrncpy(roomname, req_room, sizeof(roomname));
5253         }
5254
5255         syslog(LOG_DEBUG, "Raw length is %ld\n", (long)raw_length);
5256
5257         if (is_binary) {
5258                 encoded_message = malloc((size_t) (((raw_length * 134) / 100) + 4096 ) );
5259         }
5260         else {
5261                 encoded_message = malloc((size_t)(raw_length + 4096));
5262         }
5263
5264         sprintf(encoded_message, "Content-type: %s\n", content_type);
5265
5266         if (is_binary) {
5267                 sprintf(&encoded_message[strlen(encoded_message)],
5268                         "Content-transfer-encoding: base64\n\n"
5269                         );
5270         }
5271         else {
5272                 sprintf(&encoded_message[strlen(encoded_message)],
5273                         "Content-transfer-encoding: 7bit\n\n"
5274                         );
5275         }
5276
5277         if (is_binary) {
5278                 CtdlEncodeBase64(
5279                         &encoded_message[strlen(encoded_message)],
5280                         raw_message,
5281                         (int)raw_length,
5282                         0
5283                         );
5284         }
5285         else {
5286                 memcpy(
5287                         &encoded_message[strlen(encoded_message)],
5288                         raw_message,
5289                         (int)(raw_length+1)
5290                         );
5291         }
5292
5293         syslog(LOG_DEBUG, "Allocating\n");
5294         msg = malloc(sizeof(struct CtdlMessage));
5295         memset(msg, 0, sizeof(struct CtdlMessage));
5296         msg->cm_magic = CTDLMESSAGE_MAGIC;
5297         msg->cm_anon_type = MES_NORMAL;
5298         msg->cm_format_type = 4;
5299         msg->cm_fields['A'] = strdup(CC->user.fullname);
5300         msg->cm_fields['O'] = strdup(req_room);
5301         msg->cm_fields['N'] = strdup(config.c_nodename);
5302         msg->cm_fields['H'] = strdup(config.c_humannode);
5303         msg->cm_flags = flags;
5304
5305         msg->cm_fields['M'] = encoded_message;
5306
5307         /* Create the requested room if we have to. */
5308         if (CtdlGetRoom(&qrbuf, roomname) != 0) {
5309                 CtdlCreateRoom(roomname,
5310                                ( (is_mailbox != NULL) ? 5 : 3 ),
5311                                "", 0, 1, 0, VIEW_BBS);
5312         }
5313         /* If the caller specified this object as unique, delete all
5314          * other objects of this type that are currently in the room.
5315          */
5316         if (is_unique) {
5317                 syslog(LOG_DEBUG, "Deleted %d other msgs of this type\n",
5318                        CtdlDeleteMessages(roomname, NULL, 0, content_type)
5319                         );
5320         }
5321         /* Now write the data */
5322         CtdlSubmitMsg(msg, NULL, roomname, 0);
5323         CtdlFreeMessage(msg);
5324 }
5325
5326
5327
5328
5329
5330
5331 void CtdlGetSysConfigBackend(long msgnum, void *userdata) {
5332         config_msgnum = msgnum;
5333 }
5334
5335
5336 char *CtdlGetSysConfig(char *sysconfname) {
5337         char hold_rm[ROOMNAMELEN];
5338         long msgnum;
5339         char *conf;
5340         struct CtdlMessage *msg;
5341         char buf[SIZ];
5342
5343         strcpy(hold_rm, CC->room.QRname);
5344         if (CtdlGetRoom(&CC->room, SYSCONFIGROOM) != 0) {
5345                 CtdlGetRoom(&CC->room, hold_rm);
5346                 return NULL;
5347         }
5348
5349
5350         /* We want the last (and probably only) config in this room */
5351         begin_critical_section(S_CONFIG);
5352         config_msgnum = (-1L);
5353         CtdlForEachMessage(MSGS_LAST, 1, NULL, sysconfname, NULL,
5354                            CtdlGetSysConfigBackend, NULL);
5355         msgnum = config_msgnum;
5356         end_critical_section(S_CONFIG);
5357
5358         if (msgnum < 0L) {
5359                 conf = NULL;
5360         }
5361         else {
5362                 msg = CtdlFetchMessage(msgnum, 1);
5363                 if (msg != NULL) {
5364                         conf = strdup(msg->cm_fields['M']);
5365                         CtdlFreeMessage(msg);
5366                 }
5367                 else {
5368                         conf = NULL;
5369                 }
5370         }
5371
5372         CtdlGetRoom(&CC->room, hold_rm);
5373
5374         if (conf != NULL) do {
5375                         extract_token(buf, conf, 0, '\n', sizeof buf);
5376                         strcpy(conf, &conf[strlen(buf)+1]);
5377                 } while ( (!IsEmptyStr(conf)) && (!IsEmptyStr(buf)) );
5378
5379         return(conf);
5380 }
5381
5382
5383 void CtdlPutSysConfig(char *sysconfname, char *sysconfdata) {
5384         CtdlWriteObject(SYSCONFIGROOM, sysconfname, sysconfdata, (strlen(sysconfdata)+1), NULL, 0, 1, 0);
5385 }
5386
5387
5388 /*
5389  * Determine whether a given Internet address belongs to the current user
5390  */
5391 int CtdlIsMe(char *addr, int addr_buf_len)
5392 {
5393         struct recptypes *recp;
5394         int i;
5395
5396         recp = validate_recipients(addr, NULL, 0);
5397         if (recp == NULL) return(0);
5398
5399         if (recp->num_local == 0) {
5400                 free_recipients(recp);
5401                 return(0);
5402         }
5403
5404         for (i=0; i<recp->num_local; ++i) {
5405                 extract_token(addr, recp->recp_local, i, '|', addr_buf_len);
5406                 if (!strcasecmp(addr, CC->user.fullname)) {
5407                         free_recipients(recp);
5408                         return(1);
5409                 }
5410         }
5411
5412         free_recipients(recp);
5413         return(0);
5414 }
5415
5416
5417 /*
5418  * Citadel protocol command to do the same
5419  */
5420 void cmd_isme(char *argbuf) {
5421         char addr[256];
5422
5423         if (CtdlAccessCheck(ac_logged_in)) return;
5424         extract_token(addr, argbuf, 0, '|', sizeof addr);
5425
5426         if (CtdlIsMe(addr, sizeof addr)) {
5427                 cprintf("%d %s\n", CIT_OK, addr);
5428         }
5429         else {
5430                 cprintf("%d Not you.\n", ERROR + ILLEGAL_VALUE);
5431         }
5432
5433 }
5434
5435
5436 /*****************************************************************************/
5437 /*                      MODULE INITIALIZATION STUFF                          */
5438 /*****************************************************************************/
5439
5440 CTDL_MODULE_INIT(msgbase)
5441 {
5442         if (!threading) {
5443                 CtdlRegisterProtoHook(cmd_msgs, "MSGS", "Output a list of messages in the current room");
5444                 CtdlRegisterProtoHook(cmd_msg0, "MSG0", "Output a message in plain text format");
5445                 CtdlRegisterProtoHook(cmd_msg2, "MSG2", "Output a message in RFC822 format");
5446                 CtdlRegisterProtoHook(cmd_msg3, "MSG3", "Output a message in raw format (deprecated)");
5447                 CtdlRegisterProtoHook(cmd_msg4, "MSG4", "Output a message in the client's preferred format");
5448                 CtdlRegisterProtoHook(cmd_msgp, "MSGP", "Select preferred format for MSG4 output");
5449                 CtdlRegisterProtoHook(cmd_opna, "OPNA", "Open an attachment for download");
5450                 CtdlRegisterProtoHook(cmd_dlat, "DLAT", "Download an attachment");
5451                 CtdlRegisterProtoHook(cmd_ent0, "ENT0", "Enter a message");
5452                 CtdlRegisterProtoHook(cmd_dele, "DELE", "Delete a message");
5453                 CtdlRegisterProtoHook(cmd_move, "MOVE", "Move or copy a message to another room");
5454                 CtdlRegisterProtoHook(cmd_isme, "ISME", "Determine whether an email address belongs to a user");
5455         }
5456
5457         /* return our Subversion id for the Log */
5458         return "msgbase";
5459 }