citadel/msgbase.c

   1 /*
   2  * $Id$
   3  *
   4  * Implements the message store.
   5  *
   6  * Copyright (c) 1987-2010 by the citadel.org team
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 3 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  */
  22
  23 #include "sysdep.h"
  24 #include <stdlib.h>
  25 #include <unistd.h>
  26 #include <stdio.h>
  27 #include <fcntl.h>
  28
  29 #if TIME_WITH_SYS_TIME
  30 # include <sys/time.h>
  31 # include <time.h>
  32 #else
  33 # if HAVE_SYS_TIME_H
  34 #  include <sys/time.h>
  35 # else
  36 #  include <time.h>
  37 # endif
  38 #endif
  39
  40
  41 #include <ctype.h>
  42 #include <string.h>
  43 #include <limits.h>
  44 #include <errno.h>
  45 #include <stdarg.h>
  46 #include <sys/stat.h>
  47 #include <sys/types.h>
  48 #include <regex.h>
  49 #include <libcitadel.h>
  50 #include "citadel.h"
  51 #include "server.h"
  52 #include "serv_extensions.h"
  53 #include "database.h"
  54 #include "msgbase.h"
  55 #include "support.h"
  56 #include "sysdep_decls.h"
  57 #include "citserver.h"
  58 #include "room_ops.h"
  59 #include "user_ops.h"
  60 #include "file_ops.h"
  61 #include "config.h"
  62 #include "control.h"
  63 #include "genstamp.h"
  64 #include "internet_addressing.h"
  65 #include "euidindex.h"
  66 #include "journaling.h"
  67 #include "citadel_dirs.h"
  68 #include "clientsocket.h"
  69 #include "serv_network.h"
  70 #include "threads.h"
  71
  72 #include "ctdl_module.h"
  73
  74 long config_msgnum;
  75 struct addresses_to_be_filed *atbf = NULL;
  76
  77 /* This temp file holds the queue of operations for AdjRefCount() */
  78 static FILE *arcfp = NULL;
  79
  80 /*
  81  * This really belongs in serv_network.c, but I don't know how to export
  82  * symbols between modules.
  83  */
  84 struct FilterList *filterlist = NULL;
  85
  86
  87 /*
  88  * These are the four-character field headers we use when outputting
  89  * messages in Citadel format (as opposed to RFC822 format).
  90  */
  91 char *msgkeys[] = {
  92         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  93         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  94         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  95         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  96         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  97         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  98         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  99         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
 100         NULL,
 101         "from",
 102         NULL, NULL, NULL,
 103         "exti",
 104         "rfca",
 105         NULL,
 106         "hnod",
 107         "msgn",
 108         "jrnl",
 109         NULL,
 110         "list",
 111         "text",
 112         "node",
 113         "room",
 114         "path",
 115         NULL,
 116         "rcpt",
 117         "spec",
 118         "time",
 119         "subj",
 120         NULL,
 121         "wefw",
 122         NULL,
 123         "cccc",
 124         NULL
 125 };
 126
 127 /*
 128  * This function is self explanatory.
 129  * (What can I say, I'm in a weird mood today...)
 130  */
 131 void remove_any_whitespace_to_the_left_or_right_of_at_symbol(char *name)
 132 {
 133         int i;
 134
 135         for (i = 0; i < strlen(name); ++i) {
 136                 if (name[i] == '@') {
 137                         while (isspace(name[i - 1]) && i > 0) {
 138                                 strcpy(&name[i - 1], &name[i]);
 139                                 --i;
 140                         }
 141                         while (isspace(name[i + 1])) {
 142                                 strcpy(&name[i + 1], &name[i + 2]);
 143                         }
 144                 }
 145         }
 146 }
 147
 148
 149 /*
 150  * Aliasing for network mail.
 151  * (Error messages have been commented out, because this is a server.)
 152  */
 153 int alias(char *name)
 154 {                               /* process alias and routing info for mail */
 155         FILE *fp;
 156         int a, i;
 157         char aaa[SIZ], bbb[SIZ];
 158         char *ignetcfg = NULL;
 159         char *ignetmap = NULL;
 160         int at = 0;
 161         char node[64];
 162         char testnode[64];
 163         char buf[SIZ];
 164
 165         char original_name[256];
 166         safestrncpy(original_name, name, sizeof original_name);
 167
 168         striplt(name);
 169         remove_any_whitespace_to_the_left_or_right_of_at_symbol(name);
 170         stripallbut(name, '<', '>');
 171
 172         fp = fopen(file_mail_aliases, "r");
 173         if (fp == NULL) {
 174                 fp = fopen("/dev/null", "r");
 175         }
 176         if (fp == NULL) {
 177                 return (MES_ERROR);
 178         }
 179         strcpy(aaa, "");
 180         strcpy(bbb, "");
 181         while (fgets(aaa, sizeof aaa, fp) != NULL) {
 182                 while (isspace(name[0]))
 183                         strcpy(name, &name[1]);
 184                 aaa[strlen(aaa) - 1] = 0;
 185                 strcpy(bbb, "");
 186                 for (a = 0; a < strlen(aaa); ++a) {
 187                         if (aaa[a] == ',') {
 188                                 strcpy(bbb, &aaa[a + 1]);
 189                                 aaa[a] = 0;
 190                         }
 191                 }
 192                 if (!strcasecmp(name, aaa))
 193                         strcpy(name, bbb);
 194         }
 195         fclose(fp);
 196
 197         /* Hit the Global Address Book */
 198         if (CtdlDirectoryLookup(aaa, name, sizeof aaa) == 0) {
 199                 strcpy(name, aaa);
 200         }
 201
 202         if (strcasecmp(original_name, name)) {
 203                 CtdlLogPrintf(CTDL_INFO, "%s is being forwarded to %s\n", original_name, name);
 204         }
 205
 206         /* Change "user @ xxx" to "user" if xxx is an alias for this host */
 207         for (a=0; a<strlen(name); ++a) {
 208                 if (name[a] == '@') {
 209                         if (CtdlHostAlias(&name[a+1]) == hostalias_localhost) {
 210                                 name[a] = 0;
 211                                 CtdlLogPrintf(CTDL_INFO, "Changed to <%s>\n", name);
 212                         }
 213                 }
 214         }
 215
 216         /* determine local or remote type, see citadel.h */
 217         at = haschar(name, '@');
 218         if (at == 0) return(MES_LOCAL);         /* no @'s - local address */
 219         if (at > 1) return(MES_ERROR);          /* >1 @'s - invalid address */
 220         remove_any_whitespace_to_the_left_or_right_of_at_symbol(name);
 221
 222         /* figure out the delivery mode */
 223         extract_token(node, name, 1, '@', sizeof node);
 224
 225         /* If there are one or more dots in the nodename, we assume that it
 226          * is an FQDN and will attempt SMTP delivery to the Internet.
 227          */
 228         if (haschar(node, '.') > 0) {
 229                 return(MES_INTERNET);
 230         }
 231
 232         /* Otherwise we look in the IGnet maps for a valid Citadel node.
 233          * Try directly-connected nodes first...
 234          */
 235         ignetcfg = CtdlGetSysConfig(IGNETCFG);
 236         for (i=0; i<num_tokens(ignetcfg, '\n'); ++i) {
 237                 extract_token(buf, ignetcfg, i, '\n', sizeof buf);
 238                 extract_token(testnode, buf, 0, '|', sizeof testnode);
 239                 if (!strcasecmp(node, testnode)) {
 240                         free(ignetcfg);
 241                         return(MES_IGNET);
 242                 }
 243         }
 244         free(ignetcfg);
 245
 246         /*
 247          * Then try nodes that are two or more hops away.
 248          */
 249         ignetmap = CtdlGetSysConfig(IGNETMAP);
 250         for (i=0; i<num_tokens(ignetmap, '\n'); ++i) {
 251                 extract_token(buf, ignetmap, i, '\n', sizeof buf);
 252                 extract_token(testnode, buf, 0, '|', sizeof testnode);
 253                 if (!strcasecmp(node, testnode)) {
 254                         free(ignetmap);
 255                         return(MES_IGNET);
 256                 }
 257         }
 258         free(ignetmap);
 259
 260         /* If we get to this point it's an invalid node name */
 261         return (MES_ERROR);
 262 }
 263
 264
 265 /*
 266  * Back end for the MSGS command: output message number only.
 267  */
 268 void simple_listing(long msgnum, void *userdata)
 269 {
 270         cprintf("%ld\n", msgnum);
 271 }
 272
 273
 274
 275 /*
 276  * Back end for the MSGS command: output header summary.
 277  */
 278 void headers_listing(long msgnum, void *userdata)
 279 {
 280         struct CtdlMessage *msg;
 281
 282         msg = CtdlFetchMessage(msgnum, 0);
 283         if (msg == NULL) {
 284                 cprintf("%ld|0|||||\n", msgnum);
 285                 return;
 286         }
 287
 288         cprintf("%ld|%s|%s|%s|%s|%s|\n",
 289                 msgnum,
 290                 (msg->cm_fields['T'] ? msg->cm_fields['T'] : "0"),
 291                 (msg->cm_fields['A'] ? msg->cm_fields['A'] : ""),
 292                 (msg->cm_fields['N'] ? msg->cm_fields['N'] : ""),
 293                 (msg->cm_fields['F'] ? msg->cm_fields['F'] : ""),
 294                 (msg->cm_fields['U'] ? msg->cm_fields['U'] : "")
 295         );
 296         CtdlFreeMessage(msg);
 297 }
 298
 299 /*
 300  * Back end for the MSGS command: output EUID header.
 301  */
 302 void headers_euid(long msgnum, void *userdata)
 303 {
 304         struct CtdlMessage *msg;
 305
 306         msg = CtdlFetchMessage(msgnum, 0);
 307         if (msg == NULL) {
 308                 cprintf("%ld||\n", msgnum);
 309                 return;
 310         }
 311
 312         cprintf("%ld|%s|\n", msgnum, (msg->cm_fields['E'] ? msg->cm_fields['E'] : ""));
 313         CtdlFreeMessage(msg);
 314 }
 315
 316
 317
 318
 319
 320 /* Determine if a given message matches the fields in a message template.
 321  * Return 0 for a successful match.
 322  */
 323 int CtdlMsgCmp(struct CtdlMessage *msg, struct CtdlMessage *template) {
 324         int i;
 325
 326         /* If there aren't any fields in the template, all messages will
 327          * match.
 328          */
 329         if (template == NULL) return(0);
 330
 331         /* Null messages are bogus. */
 332         if (msg == NULL) return(1);
 333
 334         for (i='A'; i<='Z'; ++i) {
 335                 if (template->cm_fields[i] != NULL) {
 336                         if (msg->cm_fields[i] == NULL) {
 337                                 /* Considered equal if temmplate is empty string */
 338                                 if (IsEmptyStr(template->cm_fields[i])) continue;
 339                                 return 1;
 340                         }
 341                         if (strcasecmp(msg->cm_fields[i],
 342                                 template->cm_fields[i])) return 1;
 343                 }
 344         }
 345
 346         /* All compares succeeded: we have a match! */
 347         return 0;
 348 }
 349
 350
 351
 352 /*
 353  * Retrieve the "seen" message list for the current room.
 354  */
 355 void CtdlGetSeen(char *buf, int which_set) {
 356         struct visit vbuf;
 357
 358         /* Learn about the user and room in question */
 359         CtdlGetRelationship(&vbuf, &CC->user, &CC->room);
 360
 361         if (which_set == ctdlsetseen_seen)
 362                 safestrncpy(buf, vbuf.v_seen, SIZ);
 363         if (which_set == ctdlsetseen_answered)
 364                 safestrncpy(buf, vbuf.v_answered, SIZ);
 365 }
 366
 367
 368
 369 /*
 370  * Manipulate the "seen msgs" string (or other message set strings)
 371  */
 372 void CtdlSetSeen(long *target_msgnums, int num_target_msgnums,
 373                 int target_setting, int which_set,
 374                 struct ctdluser *which_user, struct ctdlroom *which_room) {
 375         struct cdbdata *cdbfr;
 376         int i, k;
 377         int is_seen = 0;
 378         int was_seen = 0;
 379         long lo = (-1L);
 380         long hi = (-1L);
 381         struct visit vbuf;
 382         long *msglist;
 383         int num_msgs = 0;
 384         StrBuf *vset;
 385         StrBuf *setstr;
 386         StrBuf *lostr;
 387         StrBuf *histr;
 388         const char *pvset;
 389         char *is_set;   /* actually an array of booleans */
 390
 391         /* Don't bother doing *anything* if we were passed a list of zero messages */
 392         if (num_target_msgnums < 1) {
 393                 return;
 394         }
 395
 396         /* If no room was specified, we go with the current room. */
 397         if (!which_room) {
 398                 which_room = &CC->room;
 399         }
 400
 401         /* If no user was specified, we go with the current user. */
 402         if (!which_user) {
 403                 which_user = &CC->user;
 404         }
 405
 406         CtdlLogPrintf(CTDL_DEBUG, "CtdlSetSeen(%d msgs starting with %ld, %s, %d) in <%s>\n",
 407                 num_target_msgnums, target_msgnums[0],
 408                 (target_setting ? "SET" : "CLEAR"),
 409                 which_set,
 410                 which_room->QRname);
 411
 412         /* Learn about the user and room in question */
 413         CtdlGetRelationship(&vbuf, which_user, which_room);
 414
 415         /* Load the message list */
 416         cdbfr = cdb_fetch(CDB_MSGLISTS, &which_room->QRnumber, sizeof(long));
 417         if (cdbfr != NULL) {
 418                 msglist = (long *) cdbfr->ptr;
 419                 cdbfr->ptr = NULL;      /* CtdlSetSeen() now owns this memory */
 420                 num_msgs = cdbfr->len / sizeof(long);
 421                 cdb_free(cdbfr);
 422         } else {
 423                 return; /* No messages at all?  No further action. */
 424         }
 425
 426         is_set = malloc(num_msgs * sizeof(char));
 427         memset(is_set, 0, (num_msgs * sizeof(char)) );
 428
 429         /* Decide which message set we're manipulating */
 430         switch(which_set) {
 431         case ctdlsetseen_seen:
 432                 vset = NewStrBufPlain(vbuf.v_seen, -1);
 433                 break;
 434         case ctdlsetseen_answered:
 435                 vset = NewStrBufPlain(vbuf.v_answered, -1);
 436                 break;
 437         default:
 438                 vset = NewStrBuf();
 439         }
 440
 441
 442 #if 0   /* This is a special diagnostic section.  Do not allow it to run during normal operation. */
 443         CtdlLogPrintf(CTDL_DEBUG, "There are %d messages in the room.\n", num_msgs);
 444         for (i=0; i<num_msgs; ++i) {
 445                 if ((i > 0) && (msglist[i] <= msglist[i-1])) abort();
 446         }
 447         CtdlLogPrintf(CTDL_DEBUG, "We are twiddling %d of them.\n", num_target_msgnums);
 448         for (k=0; k<num_target_msgnums; ++k) {
 449                 if ((k > 0) && (target_msgnums[k] <= target_msgnums[k-1])) abort();
 450         }
 451 #endif
 452
 453         CtdlLogPrintf(CTDL_DEBUG, "before update: %s\n", ChrPtr(vset));
 454
 455         /* Translate the existing sequence set into an array of booleans */
 456         setstr = NewStrBuf();
 457         lostr = NewStrBuf();
 458         histr = NewStrBuf();
 459         pvset = NULL;
 460         while (StrBufExtract_NextToken(setstr, vset, &pvset, ',') >= 0) {
 461
 462                 StrBufExtract_token(lostr, setstr, 0, ':');
 463                 if (StrBufNum_tokens(setstr, ':') >= 2) {
 464                         StrBufExtract_token(histr, setstr, 1, ':');
 465                 }
 466                 else {
 467                         FlushStrBuf(histr);
 468                         StrBufAppendBuf(histr, lostr, 0);
 469                 }
 470                 lo = StrTol(lostr);
 471                 if (!strcmp(ChrPtr(histr), "*")) {
 472                         hi = LONG_MAX;
 473                 }
 474                 else {
 475                         hi = StrTol(histr);
 476                 }
 477
 478                 for (i = 0; i < num_msgs; ++i) {
 479                         if ((msglist[i] >= lo) && (msglist[i] <= hi)) {
 480                                 is_set[i] = 1;
 481                         }
 482                 }
 483         }
 484         FreeStrBuf(&setstr);
 485         FreeStrBuf(&lostr);
 486         FreeStrBuf(&histr);
 487
 488
 489         /* Now translate the array of booleans back into a sequence set */
 490         FlushStrBuf(vset);
 491         was_seen = 0;
 492         lo = (-1);
 493         hi = (-1);
 494
 495         for (i=0; i<num_msgs; ++i) {
 496                 is_seen = is_set[i];
 497
 498                 /* Apply changes */
 499                 for (k=0; k<num_target_msgnums; ++k) {
 500                         if (msglist[i] == target_msgnums[k]) {
 501                                 is_seen = target_setting;
 502                         }
 503                 }
 504
 505                 if ((was_seen == 0) && (is_seen == 1)) {
 506                         lo = msglist[i];
 507                 }
 508                 else if ((was_seen == 1) && (is_seen == 0)) {
 509                         hi = msglist[i-1];
 510
 511                         if (StrLength(vset) > 0) {
 512                                 StrBufAppendBufPlain(vset, HKEY(","), 0);
 513                         }
 514                         if (lo == hi) {
 515                                 StrBufAppendPrintf(vset, "%ld", hi);
 516                         }
 517                         else {
 518                                 StrBufAppendPrintf(vset, "%ld:%ld", lo, hi);
 519                         }
 520                 }
 521
 522                 if ((is_seen) && (i == num_msgs - 1)) {
 523                         if (StrLength(vset) > 0) {
 524                                 StrBufAppendBufPlain(vset, HKEY(","), 0);
 525                         }
 526                         if ((i==0) || (was_seen == 0)) {
 527                                 StrBufAppendPrintf(vset, "%ld", msglist[i]);
 528                         }
 529                         else {
 530                                 StrBufAppendPrintf(vset, "%ld:%ld", lo, msglist[i]);
 531                         }
 532                 }
 533
 534                 was_seen = is_seen;
 535         }
 536
 537         /*
 538          * We will have to stuff this string back into a 4096 byte buffer, so if it's
 539          * larger than that now, truncate it by removing tokens from the beginning.
 540          * The limit of 100 iterations is there to prevent an infinite loop in case
 541          * something unexpected happens.
 542          */
 543         int number_of_truncations = 0;
 544         while ( (StrLength(vset) > SIZ) && (number_of_truncations < 100) ) {
 545                 StrBufRemove_token(vset, 0, ',');
 546                 ++number_of_truncations;
 547         }
 548
 549         /*
 550          * If we're truncating the sequence set of messages marked with the 'seen' flag,
 551          * we want the earliest messages (the truncated ones) to be marked, not unmarked.
 552          * Otherwise messages at the beginning will suddenly appear to be 'unseen'.
 553          */
 554         if ( (which_set == ctdlsetseen_seen) && (number_of_truncations > 0) ) {
 555                 StrBuf *first_tok;
 556                 first_tok = NewStrBuf();
 557                 StrBufExtract_token(first_tok, vset, 0, ',');
 558                 StrBufRemove_token(vset, 0, ',');
 559
 560                 if (StrBufNum_tokens(first_tok, ':') > 1) {
 561                         StrBufRemove_token(first_tok, 0, ':');
 562                 }
 563
 564                 StrBuf *new_set;
 565                 new_set = NewStrBuf();
 566                 StrBufAppendBufPlain(new_set, HKEY("1:"), 0);
 567                 StrBufAppendBuf(new_set, first_tok, 0);
 568                 StrBufAppendBufPlain(new_set, HKEY(":"), 0);
 569                 StrBufAppendBuf(new_set, vset, 0);
 570
 571                 FreeStrBuf(&vset);
 572                 FreeStrBuf(&first_tok);
 573                 vset = new_set;
 574         }
 575
 576         CtdlLogPrintf(CTDL_DEBUG, " after update: %s\n", ChrPtr(vset));
 577
 578         /* Decide which message set we're manipulating */
 579         switch (which_set) {
 580                 case ctdlsetseen_seen:
 581                         safestrncpy(vbuf.v_seen, ChrPtr(vset), sizeof vbuf.v_seen);
 582                         break;
 583                 case ctdlsetseen_answered:
 584                         safestrncpy(vbuf.v_answered, ChrPtr(vset), sizeof vbuf.v_answered);
 585                         break;
 586         }
 587
 588         free(is_set);
 589         free(msglist);
 590         CtdlSetRelationship(&vbuf, which_user, which_room);
 591         FreeStrBuf(&vset);
 592 }
 593
 594
 595 /*
 596  * API function to perform an operation for each qualifying message in the
 597  * current room.  (Returns the number of messages processed.)
 598  */
 599 int CtdlForEachMessage(int mode, long ref, char *search_string,
 600                         char *content_type,
 601                         struct CtdlMessage *compare,
 602                         ForEachMsgCallback CallBack,
 603                         void *userdata)
 604 {
 605
 606         int a, i, j;
 607         struct visit vbuf;
 608         struct cdbdata *cdbfr;
 609         long *msglist = NULL;
 610         int num_msgs = 0;
 611         int num_processed = 0;
 612         long thismsg;
 613         struct MetaData smi;
 614         struct CtdlMessage *msg = NULL;
 615         int is_seen = 0;
 616         long lastold = 0L;
 617         int printed_lastold = 0;
 618         int num_search_msgs = 0;
 619         long *search_msgs = NULL;
 620         regex_t re;
 621         int need_to_free_re = 0;
 622         regmatch_t pm;
 623
 624         if ((content_type) && (!IsEmptyStr(content_type))) {
 625                 regcomp(&re, content_type, 0);
 626                 need_to_free_re = 1;
 627         }
 628
 629         /* Learn about the user and room in question */
 630         CtdlGetUser(&CC->user, CC->curr_user);
 631         CtdlGetRelationship(&vbuf, &CC->user, &CC->room);
 632
 633         /* Load the message list */
 634         cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
 635         if (cdbfr != NULL) {
 636                 msglist = (long *) cdbfr->ptr;
 637                 num_msgs = cdbfr->len / sizeof(long);
 638         } else {
 639                 if (need_to_free_re) regfree(&re);
 640                 return 0;       /* No messages at all?  No further action. */
 641         }
 642
 643
 644         /*
 645          * Now begin the traversal.
 646          */
 647         if (num_msgs > 0) for (a = 0; a < num_msgs; ++a) {
 648
 649                 /* If the caller is looking for a specific MIME type, filter
 650                  * out all messages which are not of the type requested.
 651                  */
 652                 if ((content_type != NULL) && (!IsEmptyStr(content_type))) {
 653
 654                         /* This call to GetMetaData() sits inside this loop
 655                          * so that we only do the extra database read per msg
 656                          * if we need to.  Doing the extra read all the time
 657                          * really kills the server.  If we ever need to use
 658                          * metadata for another search criterion, we need to
 659                          * move the read somewhere else -- but still be smart
 660                          * enough to only do the read if the caller has
 661                          * specified something that will need it.
 662                          */
 663                         GetMetaData(&smi, msglist[a]);
 664
 665                         /* if (strcasecmp(smi.meta_content_type, content_type)) { old non-regex way */
 666                         if (regexec(&re, smi.meta_content_type, 1, &pm, 0) != 0) {
 667                                 msglist[a] = 0L;
 668                         }
 669                 }
 670         }
 671
 672         num_msgs = sort_msglist(msglist, num_msgs);
 673
 674         /* If a template was supplied, filter out the messages which
 675          * don't match.  (This could induce some delays!)
 676          */
 677         if (num_msgs > 0) {
 678                 if (compare != NULL) {
 679                         for (a = 0; a < num_msgs; ++a) {
 680                                 msg = CtdlFetchMessage(msglist[a], 1);
 681                                 if (msg != NULL) {
 682                                         if (CtdlMsgCmp(msg, compare)) {
 683                                                 msglist[a] = 0L;
 684                                         }
 685                                         CtdlFreeMessage(msg);
 686                                 }
 687                         }
 688                 }
 689         }
 690
 691         /* If a search string was specified, get a message list from
 692          * the full text index and remove messages which aren't on both
 693          * lists.
 694          *
 695          * How this works:
 696          * Since the lists are sorted and strictly ascending, and the
 697          * output list is guaranteed to be shorter than or equal to the
 698          * input list, we overwrite the bottom of the input list.  This
 699          * eliminates the need to memmove big chunks of the list over and
 700          * over again.
 701          */
 702         if ( (num_msgs > 0) && (mode == MSGS_SEARCH) && (search_string) ) {
 703
 704                 /* Call search module via hook mechanism.
 705                  * NULL means use any search function available.
 706                  * otherwise replace with a char * to name of search routine
 707                  */
 708                 CtdlModuleDoSearch(&num_search_msgs, &search_msgs, search_string, "fulltext");
 709
 710                 if (num_search_msgs > 0) {
 711
 712                         int orig_num_msgs;
 713
 714                         orig_num_msgs = num_msgs;
 715                         num_msgs = 0;
 716                         for (i=0; i<orig_num_msgs; ++i) {
 717                                 for (j=0; j<num_search_msgs; ++j) {
 718                                         if (msglist[i] == search_msgs[j]) {
 719                                                 msglist[num_msgs++] = msglist[i];
 720                                         }
 721                                 }
 722                         }
 723                 }
 724                 else {
 725                         num_msgs = 0;   /* No messages qualify */
 726                 }
 727                 if (search_msgs != NULL) free(search_msgs);
 728
 729                 /* Now that we've purged messages which don't contain the search
 730                  * string, treat a MSGS_SEARCH just like a MSGS_ALL from this
 731                  * point on.
 732                  */
 733                 mode = MSGS_ALL;
 734         }
 735
 736         /*
 737          * Now iterate through the message list, according to the
 738          * criteria supplied by the caller.
 739          */
 740         if (num_msgs > 0)
 741                 for (a = 0; a < num_msgs; ++a) {
 742                         thismsg = msglist[a];
 743                         if (mode == MSGS_ALL) {
 744                                 is_seen = 0;
 745                         }
 746                         else {
 747                                 is_seen = is_msg_in_sequence_set(
 748                                                         vbuf.v_seen, thismsg);
 749                                 if (is_seen) lastold = thismsg;
 750                         }
 751                         if ((thismsg > 0L)
 752                             && (
 753
 754                                        (mode == MSGS_ALL)
 755                                        || ((mode == MSGS_OLD) && (is_seen))
 756                                        || ((mode == MSGS_NEW) && (!is_seen))
 757                                        || ((mode == MSGS_LAST) && (a >= (num_msgs - ref)))
 758                                    || ((mode == MSGS_FIRST) && (a < ref))
 759                                 || ((mode == MSGS_GT) && (thismsg > ref))
 760                                 || ((mode == MSGS_LT) && (thismsg < ref))
 761                                 || ((mode == MSGS_EQ) && (thismsg == ref))
 762                             )
 763                             ) {
 764                                 if ((mode == MSGS_NEW) && (CC->user.flags & US_LASTOLD) && (lastold > 0L) && (printed_lastold == 0) && (!is_seen)) {
 765                                         if (CallBack)
 766                                                 CallBack(lastold, userdata);
 767                                         printed_lastold = 1;
 768                                         ++num_processed;
 769                                 }
 770                                 if (CallBack) CallBack(thismsg, userdata);
 771                                 ++num_processed;
 772                         }
 773                 }
 774         cdb_free(cdbfr);        /* Clean up */
 775         if (need_to_free_re) regfree(&re);
 776         return num_processed;
 777 }
 778
 779
 780
 781 /*
 782  * cmd_msgs()  -  get list of message #'s in this room
 783  *              implements the MSGS server command using CtdlForEachMessage()
 784  */
 785 void cmd_msgs(char *cmdbuf)
 786 {
 787         int mode = 0;
 788         char which[16];
 789         char buf[256];
 790         char tfield[256];
 791         char tvalue[256];
 792         int cm_ref = 0;
 793         int i;
 794         int with_template = 0;
 795         struct CtdlMessage *template = NULL;
 796         char search_string[1024];
 797         ForEachMsgCallback CallBack;
 798
 799         extract_token(which, cmdbuf, 0, '|', sizeof which);
 800         cm_ref = extract_int(cmdbuf, 1);
 801         extract_token(search_string, cmdbuf, 1, '|', sizeof search_string);
 802         with_template = extract_int(cmdbuf, 2);
 803         switch (extract_int(cmdbuf, 3))
 804         {
 805         default:
 806         case MSG_HDRS_BRIEF:
 807                 CallBack = simple_listing;
 808                 break;
 809         case MSG_HDRS_ALL:
 810                 CallBack = headers_listing;
 811                 break;
 812         case MSG_HDRS_EUID:
 813                 CallBack = headers_euid;
 814                 break;
 815         }
 816
 817         strcat(which, "   ");
 818         if (!strncasecmp(which, "OLD", 3))
 819                 mode = MSGS_OLD;
 820         else if (!strncasecmp(which, "NEW", 3))
 821                 mode = MSGS_NEW;
 822         else if (!strncasecmp(which, "FIRST", 5))
 823                 mode = MSGS_FIRST;
 824         else if (!strncasecmp(which, "LAST", 4))
 825                 mode = MSGS_LAST;
 826         else if (!strncasecmp(which, "GT", 2))
 827                 mode = MSGS_GT;
 828         else if (!strncasecmp(which, "LT", 2))
 829                 mode = MSGS_LT;
 830         else if (!strncasecmp(which, "SEARCH", 6))
 831                 mode = MSGS_SEARCH;
 832         else
 833                 mode = MSGS_ALL;
 834
 835         if ((!(CC->logged_in)) && (!(CC->internal_pgm))) {
 836                 cprintf("%d not logged in\n", ERROR + NOT_LOGGED_IN);
 837                 return;
 838         }
 839
 840         if ( (mode == MSGS_SEARCH) && (!config.c_enable_fulltext) ) {
 841                 cprintf("%d Full text index is not enabled on this server.\n",
 842                         ERROR + CMD_NOT_SUPPORTED);
 843                 return;
 844         }
 845
 846         if (with_template) {
 847                 unbuffer_output();
 848                 cprintf("%d Send template then receive message list\n",
 849                         START_CHAT_MODE);
 850                 template = (struct CtdlMessage *)
 851                         malloc(sizeof(struct CtdlMessage));
 852                 memset(template, 0, sizeof(struct CtdlMessage));
 853                 template->cm_magic = CTDLMESSAGE_MAGIC;
 854                 template->cm_anon_type = MES_NORMAL;
 855
 856                 while(client_getln(buf, sizeof buf) >= 0 && strcmp(buf,"000")) {
 857                         extract_token(tfield, buf, 0, '|', sizeof tfield);
 858                         extract_token(tvalue, buf, 1, '|', sizeof tvalue);
 859                         for (i='A'; i<='Z'; ++i) if (msgkeys[i]!=NULL) {
 860                                 if (!strcasecmp(tfield, msgkeys[i])) {
 861                                         template->cm_fields[i] =
 862                                                 strdup(tvalue);
 863                                 }
 864                         }
 865                 }
 866                 buffer_output();
 867         }
 868         else {
 869                 cprintf("%d  \n", LISTING_FOLLOWS);
 870         }
 871
 872         CtdlForEachMessage(mode,
 873                            ( (mode == MSGS_SEARCH) ? 0 : cm_ref ),
 874                            ( (mode == MSGS_SEARCH) ? search_string : NULL ),
 875                            NULL,
 876                            template,
 877                            CallBack,
 878                            NULL);
 879         if (template != NULL) CtdlFreeMessage(template);
 880         cprintf("000\n");
 881 }
 882
 883
 884
 885
 886 /*
 887  * help_subst()  -  support routine for help file viewer
 888  */
 889 void help_subst(char *strbuf, char *source, char *dest)
 890 {
 891         char workbuf[SIZ];
 892         int p;
 893
 894         while (p = pattern2(strbuf, source), (p >= 0)) {
 895                 strcpy(workbuf, &strbuf[p + strlen(source)]);
 896                 strcpy(&strbuf[p], dest);
 897                 strcat(strbuf, workbuf);
 898         }
 899 }
 900
 901
 902 void do_help_subst(char *buffer)
 903 {
 904         char buf2[16];
 905
 906         help_subst(buffer, "^nodename", config.c_nodename);
 907         help_subst(buffer, "^humannode", config.c_humannode);
 908         help_subst(buffer, "^fqdn", config.c_fqdn);
 909         help_subst(buffer, "^username", CC->user.fullname);
 910         snprintf(buf2, sizeof buf2, "%ld", CC->user.usernum);
 911         help_subst(buffer, "^usernum", buf2);
 912         help_subst(buffer, "^sysadm", config.c_sysadm);
 913         help_subst(buffer, "^variantname", CITADEL);
 914         snprintf(buf2, sizeof buf2, "%d", config.c_maxsessions);
 915         help_subst(buffer, "^maxsessions", buf2);
 916         help_subst(buffer, "^bbsdir", ctdl_message_dir);
 917 }
 918
 919
 920
 921 /*
 922  * memfmout()  -  Citadel text formatter and paginator.
 923  *           Although the original purpose of this routine was to format
 924  *           text to the reader's screen width, all we're really using it
 925  *           for here is to format text out to 80 columns before sending it
 926  *           to the client.  The client software may reformat it again.
 927  */
 928 void memfmout(
 929         char *mptr,             /* where are we going to get our text from? */
 930         const char *nl          /* string to terminate lines with */
 931 ) {
 932         int column = 0;
 933         char ch = 0;
 934         char outbuf[1024];
 935         int len = 0;
 936         int nllen = 0;
 937
 938         if (!mptr) return;
 939         nllen = strlen(nl);
 940         while (ch=*(mptr++), ch > 0) {
 941
 942                 if (ch == '\n') {
 943                         client_write(outbuf, len);
 944                         len = 0;
 945                         client_write(nl, nllen);
 946                         column = 0;
 947                 }
 948                 else if (ch == '\r') {
 949                         /* Ignore carriage returns.  Newlines are always LF or CRLF but never CR. */
 950                 }
 951                 else if (isspace(ch)) {
 952                         if (column > 72) {              /* Beyond 72 columns, break on the next space */
 953                                 client_write(outbuf, len);
 954                                 len = 0;
 955                                 client_write(nl, nllen);
 956                                 column = 0;
 957                         }
 958                         else {
 959                                 outbuf[len++] = ch;
 960                                 ++column;
 961                         }
 962                 }
 963                 else {
 964                         outbuf[len++] = ch;
 965                         ++column;
 966                         if (column > 1000) {            /* Beyond 1000 columns, break anywhere */
 967                                 client_write(outbuf, len);
 968                                 len = 0;
 969                                 client_write(nl, nllen);
 970                                 column = 0;
 971                         }
 972                 }
 973         }
 974         if (len) {
 975                 client_write(outbuf, len);
 976                 len = 0;
 977                 client_write(nl, nllen);
 978                 column = 0;
 979         }
 980 }
 981
 982
 983
 984 /*
 985  * Callback function for mime parser that simply lists the part
 986  */
 987 void list_this_part(char *name, char *filename, char *partnum, char *disp,
 988                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
 989                     char *cbid, void *cbuserdata)
 990 {
 991         struct ma_info *ma;
 992
 993         ma = (struct ma_info *)cbuserdata;
 994         if (ma->is_ma == 0) {
 995                 cprintf("part=%s|%s|%s|%s|%s|%ld|%s|%s\n",
 996                         name,
 997                         filename,
 998                         partnum,
 999                         disp,
1000                         cbtype,
1001                         (long)length,
1002                         cbid,
1003                         cbcharset);
1004         }
1005 }
1006
1007 /*
1008  * Callback function for multipart prefix
1009  */
1010 void list_this_pref(char *name, char *filename, char *partnum, char *disp,
1011                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1012                     char *cbid, void *cbuserdata)
1013 {
1014         struct ma_info *ma;
1015
1016         ma = (struct ma_info *)cbuserdata;
1017         if (!strcasecmp(cbtype, "multipart/alternative")) {
1018                 ++ma->is_ma;
1019         }
1020
1021         if (ma->is_ma == 0) {
1022                 cprintf("pref=%s|%s\n", partnum, cbtype);
1023         }
1024 }
1025
1026 /*
1027  * Callback function for multipart sufffix
1028  */
1029 void list_this_suff(char *name, char *filename, char *partnum, char *disp,
1030                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1031                     char *cbid, void *cbuserdata)
1032 {
1033         struct ma_info *ma;
1034
1035         ma = (struct ma_info *)cbuserdata;
1036         if (ma->is_ma == 0) {
1037                 cprintf("suff=%s|%s\n", partnum, cbtype);
1038         }
1039         if (!strcasecmp(cbtype, "multipart/alternative")) {
1040                 --ma->is_ma;
1041         }
1042 }
1043
1044
1045 /*
1046  * Callback function for mime parser that opens a section for downloading
1047  */
1048 void mime_download(char *name, char *filename, char *partnum, char *disp,
1049                    void *content, char *cbtype, char *cbcharset, size_t length,
1050                    char *encoding, char *cbid, void *cbuserdata)
1051 {
1052         int rv = 0;
1053
1054         /* Silently go away if there's already a download open. */
1055         if (CC->download_fp != NULL)
1056                 return;
1057
1058         if (
1059                 (!IsEmptyStr(partnum) && (!strcasecmp(CC->download_desired_section, partnum)))
1060         ||      (!IsEmptyStr(cbid) && (!strcasecmp(CC->download_desired_section, cbid)))
1061         ) {
1062                 CC->download_fp = tmpfile();
1063                 if (CC->download_fp == NULL)
1064                         return;
1065
1066                 rv = fwrite(content, length, 1, CC->download_fp);
1067                 fflush(CC->download_fp);
1068                 rewind(CC->download_fp);
1069
1070                 OpenCmdResult(filename, cbtype);
1071         }
1072 }
1073
1074
1075
1076 /*
1077  * Callback function for mime parser that outputs a section all at once.
1078  * We can specify the desired section by part number *or* content-id.
1079  */
1080 void mime_spew_section(char *name, char *filename, char *partnum, char *disp,
1081                    void *content, char *cbtype, char *cbcharset, size_t length,
1082                    char *encoding, char *cbid, void *cbuserdata)
1083 {
1084         int *found_it = (int *)cbuserdata;
1085
1086         if (
1087                 (!IsEmptyStr(partnum) && (!strcasecmp(CC->download_desired_section, partnum)))
1088         ||      (!IsEmptyStr(cbid) && (!strcasecmp(CC->download_desired_section, cbid)))
1089         ) {
1090                 *found_it = 1;
1091                 cprintf("%d %d|-1|%s|%s|%s\n",
1092                         BINARY_FOLLOWS,
1093                         (int)length,
1094                         filename,
1095                         cbtype,
1096                         cbcharset
1097                 );
1098                 client_write(content, length);
1099         }
1100 }
1101
1102
1103
1104 /*
1105  * Load a message from disk into memory.
1106  * This is used by CtdlOutputMsg() and other fetch functions.
1107  *
1108  * NOTE: Caller is responsible for freeing the returned CtdlMessage struct
1109  *       using the CtdlMessageFree() function.
1110  */
1111 struct CtdlMessage *CtdlFetchMessage(long msgnum, int with_body)
1112 {
1113         struct cdbdata *dmsgtext;
1114         struct CtdlMessage *ret = NULL;
1115         char *mptr;
1116         char *upper_bound;
1117         cit_uint8_t ch;
1118         cit_uint8_t field_header;
1119
1120         CtdlLogPrintf(CTDL_DEBUG, "CtdlFetchMessage(%ld, %d)\n", msgnum, with_body);
1121
1122         dmsgtext = cdb_fetch(CDB_MSGMAIN, &msgnum, sizeof(long));
1123         if (dmsgtext == NULL) {
1124                 return NULL;
1125         }
1126         mptr = dmsgtext->ptr;
1127         upper_bound = mptr + dmsgtext->len;
1128
1129         /* Parse the three bytes that begin EVERY message on disk.
1130          * The first is always 0xFF, the on-disk magic number.
1131          * The second is the anonymous/public type byte.
1132          * The third is the format type byte (vari, fixed, or MIME).
1133          */
1134         ch = *mptr++;
1135         if (ch != 255) {
1136                 CtdlLogPrintf(CTDL_ERR, "Message %ld appears to be corrupted.\n", msgnum);
1137                 cdb_free(dmsgtext);
1138                 return NULL;
1139         }
1140         ret = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
1141         memset(ret, 0, sizeof(struct CtdlMessage));
1142
1143         ret->cm_magic = CTDLMESSAGE_MAGIC;
1144         ret->cm_anon_type = *mptr++;    /* Anon type byte */
1145         ret->cm_format_type = *mptr++;  /* Format type byte */
1146
1147         /*
1148          * The rest is zero or more arbitrary fields.  Load them in.
1149          * We're done when we encounter either a zero-length field or
1150          * have just processed the 'M' (message text) field.
1151          */
1152         do {
1153                 if (mptr >= upper_bound) {
1154                         break;
1155                 }
1156                 field_header = *mptr++;
1157                 ret->cm_fields[field_header] = strdup(mptr);
1158
1159                 while (*mptr++ != 0);   /* advance to next field */
1160
1161         } while ((mptr < upper_bound) && (field_header != 'M'));
1162
1163         cdb_free(dmsgtext);
1164
1165         /* Always make sure there's something in the msg text field.  If
1166          * it's NULL, the message text is most likely stored separately,
1167          * so go ahead and fetch that.  Failing that, just set a dummy
1168          * body so other code doesn't barf.
1169          */
1170         if ( (ret->cm_fields['M'] == NULL) && (with_body) ) {
1171                 dmsgtext = cdb_fetch(CDB_BIGMSGS, &msgnum, sizeof(long));
1172                 if (dmsgtext != NULL) {
1173                         ret->cm_fields['M'] = strdup(dmsgtext->ptr);
1174                         cdb_free(dmsgtext);
1175                 }
1176         }
1177         if (ret->cm_fields['M'] == NULL) {
1178                 ret->cm_fields['M'] = strdup("\r\n\r\n (no text)\r\n");
1179         }
1180
1181         /* Perform "before read" hooks (aborting if any return nonzero) */
1182         if (PerformMessageHooks(ret, EVT_BEFOREREAD) > 0) {
1183                 CtdlFreeMessage(ret);
1184                 return NULL;
1185         }
1186
1187         return (ret);
1188 }
1189
1190
1191 /*
1192  * Returns 1 if the supplied pointer points to a valid Citadel message.
1193  * If the pointer is NULL or the magic number check fails, returns 0.
1194  */
1195 int is_valid_message(struct CtdlMessage *msg) {
1196         if (msg == NULL)
1197                 return 0;
1198         if ((msg->cm_magic) != CTDLMESSAGE_MAGIC) {
1199                 CtdlLogPrintf(CTDL_WARNING, "is_valid_message() -- self-check failed\n");
1200                 return 0;
1201         }
1202         return 1;
1203 }
1204
1205
1206 /*
1207  * 'Destructor' for struct CtdlMessage
1208  */
1209 void CtdlFreeMessage(struct CtdlMessage *msg)
1210 {
1211         int i;
1212
1213         if (is_valid_message(msg) == 0)
1214         {
1215                 if (msg != NULL) free (msg);
1216                 return;
1217         }
1218
1219         for (i = 0; i < 256; ++i)
1220                 if (msg->cm_fields[i] != NULL) {
1221                         free(msg->cm_fields[i]);
1222                 }
1223
1224         msg->cm_magic = 0;      /* just in case */
1225         free(msg);
1226 }
1227
1228
1229 /*
1230  * Pre callback function for multipart/alternative
1231  *
1232  * NOTE: this differs from the standard behavior for a reason.  Normally when
1233  *       displaying multipart/alternative you want to show the _last_ usable
1234  *       format in the message.  Here we show the _first_ one, because it's
1235  *       usually text/plain.  Since this set of functions is designed for text
1236  *       output to non-MIME-aware clients, this is the desired behavior.
1237  *
1238  */
1239 void fixed_output_pre(char *name, char *filename, char *partnum, char *disp,
1240                 void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1241                 char *cbid, void *cbuserdata)
1242 {
1243         struct ma_info *ma;
1244
1245         ma = (struct ma_info *)cbuserdata;
1246         CtdlLogPrintf(CTDL_DEBUG, "fixed_output_pre() type=<%s>\n", cbtype);
1247         if (!strcasecmp(cbtype, "multipart/alternative")) {
1248                 ++ma->is_ma;
1249                 ma->did_print = 0;
1250         }
1251         if (!strcasecmp(cbtype, "message/rfc822")) {
1252                 ++ma->freeze;
1253         }
1254 }
1255
1256 /*
1257  * Post callback function for multipart/alternative
1258  */
1259 void fixed_output_post(char *name, char *filename, char *partnum, char *disp,
1260                 void *content, char *cbtype, char *cbcharset, size_t length,
1261                 char *encoding, char *cbid, void *cbuserdata)
1262 {
1263         struct ma_info *ma;
1264
1265         ma = (struct ma_info *)cbuserdata;
1266         CtdlLogPrintf(CTDL_DEBUG, "fixed_output_post() type=<%s>\n", cbtype);
1267         if (!strcasecmp(cbtype, "multipart/alternative")) {
1268                 --ma->is_ma;
1269                 ma->did_print = 0;
1270         }
1271         if (!strcasecmp(cbtype, "message/rfc822")) {
1272                 --ma->freeze;
1273         }
1274 }
1275
1276 /*
1277  * Inline callback function for mime parser that wants to display text
1278  */
1279 void fixed_output(char *name, char *filename, char *partnum, char *disp,
1280                 void *content, char *cbtype, char *cbcharset, size_t length,
1281                 char *encoding, char *cbid, void *cbuserdata)
1282 {
1283         char *ptr;
1284         char *wptr;
1285         size_t wlen;
1286         struct ma_info *ma;
1287
1288         ma = (struct ma_info *)cbuserdata;
1289
1290         CtdlLogPrintf(CTDL_DEBUG,
1291                 "fixed_output() part %s: %s (%s) (%ld bytes)\n",
1292                 partnum, filename, cbtype, (long)length);
1293
1294         /*
1295          * If we're in the middle of a multipart/alternative scope and
1296          * we've already printed another section, skip this one.
1297          */
1298         if ( (ma->is_ma) && (ma->did_print) ) {
1299                 CtdlLogPrintf(CTDL_DEBUG, "Skipping part %s (%s)\n", partnum, cbtype);
1300                 return;
1301         }
1302         ma->did_print = 1;
1303
1304         if ( (!strcasecmp(cbtype, "text/plain"))
1305            || (IsEmptyStr(cbtype)) ) {
1306                 wptr = content;
1307                 if (length > 0) {
1308                         client_write(wptr, length);
1309                         if (wptr[length-1] != '\n') {
1310                                 cprintf("\n");
1311                         }
1312                 }
1313                 return;
1314         }
1315
1316         if (!strcasecmp(cbtype, "text/html")) {
1317                 ptr = html_to_ascii(content, length, 80, 0);
1318                 wlen = strlen(ptr);
1319                 client_write(ptr, wlen);
1320                 if (ptr[wlen-1] != '\n') {
1321                         cprintf("\n");
1322                 }
1323                 free(ptr);
1324                 return;
1325         }
1326
1327         if (ma->use_fo_hooks) {
1328                 if (PerformFixedOutputHooks(cbtype, content, length)) {
1329                 /* above function returns nonzero if it handled the part */
1330                         return;
1331                 }
1332         }
1333
1334         if (strncasecmp(cbtype, "multipart/", 10)) {
1335                 cprintf("Part %s: %s (%s) (%ld bytes)\r\n",
1336                         partnum, filename, cbtype, (long)length);
1337                 return;
1338         }
1339 }
1340
1341 /*
1342  * The client is elegant and sophisticated and wants to be choosy about
1343  * MIME content types, so figure out which multipart/alternative part
1344  * we're going to send.
1345  *
1346  * We use a system of weights.  When we find a part that matches one of the
1347  * MIME types we've declared as preferential, we can store it in ma->chosen_part
1348  * and then set ma->chosen_pref to that MIME type's position in our preference
1349  * list.  If we then hit another match, we only replace the first match if
1350  * the preference value is lower.
1351  */
1352 void choose_preferred(char *name, char *filename, char *partnum, char *disp,
1353                 void *content, char *cbtype, char *cbcharset, size_t length,
1354                 char *encoding, char *cbid, void *cbuserdata)
1355 {
1356         char buf[1024];
1357         int i;
1358         struct ma_info *ma;
1359
1360         ma = (struct ma_info *)cbuserdata;
1361
1362         // NOTE: REMOVING THIS CONDITIONAL FIXES BUG 220
1363         //       http://bugzilla.citadel.org/show_bug.cgi?id=220
1364         // I don't know if there are any side effects!  Please TEST TEST TEST
1365         //if (ma->is_ma > 0) {
1366
1367         for (i=0; i<num_tokens(CC->preferred_formats, '|'); ++i) {
1368                 extract_token(buf, CC->preferred_formats, i, '|', sizeof buf);
1369                 if ( (!strcasecmp(buf, cbtype)) && (!ma->freeze) ) {
1370                         if (i < ma->chosen_pref) {
1371                                 CtdlLogPrintf(CTDL_DEBUG, "Setting chosen part: <%s>\n", partnum);
1372                                 safestrncpy(ma->chosen_part, partnum, sizeof ma->chosen_part);
1373                                 ma->chosen_pref = i;
1374                         }
1375                 }
1376         }
1377 }
1378
1379 /*
1380  * Now that we've chosen our preferred part, output it.
1381  */
1382 void output_preferred(char *name, char *filename, char *partnum, char *disp,
1383                 void *content, char *cbtype, char *cbcharset, size_t length,
1384                 char *encoding, char *cbid, void *cbuserdata)
1385 {
1386         int i;
1387         char buf[128];
1388         int add_newline = 0;
1389         char *text_content;
1390         struct ma_info *ma;
1391
1392         ma = (struct ma_info *)cbuserdata;
1393
1394         /* This is not the MIME part you're looking for... */
1395         if (strcasecmp(partnum, ma->chosen_part)) return;
1396
1397         /* If the content-type of this part is in our preferred formats
1398          * list, we can simply output it verbatim.
1399          */
1400         for (i=0; i<num_tokens(CC->preferred_formats, '|'); ++i) {
1401                 extract_token(buf, CC->preferred_formats, i, '|', sizeof buf);
1402                 if (!strcasecmp(buf, cbtype)) {
1403                         /* Yeah!  Go!  W00t!! */
1404
1405                         text_content = (char *)content;
1406                         if (text_content[length-1] != '\n') {
1407                                 ++add_newline;
1408                         }
1409                         cprintf("Content-type: %s", cbtype);
1410                         if (!IsEmptyStr(cbcharset)) {
1411                                 cprintf("; charset=%s", cbcharset);
1412                         }
1413                         cprintf("\nContent-length: %d\n",
1414                                 (int)(length + add_newline) );
1415                         if (!IsEmptyStr(encoding)) {
1416                                 cprintf("Content-transfer-encoding: %s\n", encoding);
1417                         }
1418                         else {
1419                                 cprintf("Content-transfer-encoding: 7bit\n");
1420                         }
1421                         cprintf("X-Citadel-MSG4-Partnum: %s\n", partnum);
1422                         cprintf("\n");
1423                         client_write(content, length);
1424                         if (add_newline) cprintf("\n");
1425                         return;
1426                 }
1427         }
1428
1429         /* No translations required or possible: output as text/plain */
1430         cprintf("Content-type: text/plain\n\n");
1431         fixed_output(name, filename, partnum, disp, content, cbtype, cbcharset,
1432                         length, encoding, cbid, cbuserdata);
1433 }
1434
1435
1436 struct encapmsg {
1437         char desired_section[64];
1438         char *msg;
1439         size_t msglen;
1440 };
1441
1442
1443 /*
1444  * Callback function for
1445  */
1446 void extract_encapsulated_message(char *name, char *filename, char *partnum, char *disp,
1447                    void *content, char *cbtype, char *cbcharset, size_t length,
1448                    char *encoding, char *cbid, void *cbuserdata)
1449 {
1450         struct encapmsg *encap;
1451
1452         encap = (struct encapmsg *)cbuserdata;
1453
1454         /* Only proceed if this is the desired section... */
1455         if (!strcasecmp(encap->desired_section, partnum)) {
1456                 encap->msglen = length;
1457                 encap->msg = malloc(length + 2);
1458                 memcpy(encap->msg, content, length);
1459                 return;
1460         }
1461
1462 }
1463
1464
1465
1466
1467
1468
1469 int CtdlDoIHavePermissionToReadMessagesInThisRoom(void) {
1470         if ((!(CC->logged_in)) && (!(CC->internal_pgm))) {
1471                 return(om_not_logged_in);
1472         }
1473         return(om_ok);
1474 }
1475
1476
1477 /*
1478  * Get a message off disk.  (returns om_* values found in msgbase.h)
1479  *
1480  */
1481 int CtdlOutputMsg(long msg_num,         /* message number (local) to fetch */
1482                   int mode,             /* how would you like that message? */
1483                   int headers_only,     /* eschew the message body? */
1484                   int do_proto,         /* do Citadel protocol responses? */
1485                   int crlf,             /* Use CRLF newlines instead of LF? */
1486                   char *section,        /* NULL or a message/rfc822 section */
1487                   int flags             /* various flags; see msgbase.h */
1488 ) {
1489         struct CtdlMessage *TheMessage = NULL;
1490         int retcode = om_no_such_msg;
1491         struct encapmsg encap;
1492         int r;
1493
1494         CtdlLogPrintf(CTDL_DEBUG, "CtdlOutputMsg(msgnum=%ld, mode=%d, section=%s)\n",
1495                 msg_num, mode,
1496                 (section ? section : "<>")
1497         );
1498
1499         r = CtdlDoIHavePermissionToReadMessagesInThisRoom();
1500         if (r != om_ok) {
1501                 if (do_proto) {
1502                         if (r == om_not_logged_in) {
1503                                 cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN);
1504                         }
1505                         else {
1506                                 cprintf("%d An unknown error has occurred.\n", ERROR);
1507                         }
1508                 }
1509                 return(r);
1510         }
1511
1512         /* FIXME: check message id against msglist for this room */
1513
1514         /*
1515          * Fetch the message from disk.  If we're in HEADERS_FAST mode,
1516          * request that we don't even bother loading the body into memory.
1517          */
1518         if (headers_only == HEADERS_FAST) {
1519                 TheMessage = CtdlFetchMessage(msg_num, 0);
1520         }
1521         else {
1522                 TheMessage = CtdlFetchMessage(msg_num, 1);
1523         }
1524
1525         if (TheMessage == NULL) {
1526                 if (do_proto) cprintf("%d Can't locate msg %ld on disk\n",
1527                         ERROR + MESSAGE_NOT_FOUND, msg_num);
1528                 return(om_no_such_msg);
1529         }
1530
1531         /* Here is the weird form of this command, to process only an
1532          * encapsulated message/rfc822 section.
1533          */
1534         if (section) if (!IsEmptyStr(section)) if (strcmp(section, "0")) {
1535                 memset(&encap, 0, sizeof encap);
1536                 safestrncpy(encap.desired_section, section, sizeof encap.desired_section);
1537                 mime_parser(TheMessage->cm_fields['M'],
1538                         NULL,
1539                         *extract_encapsulated_message,
1540                         NULL, NULL, (void *)&encap, 0
1541                 );
1542                 CtdlFreeMessage(TheMessage);
1543                 TheMessage = NULL;
1544
1545                 if (encap.msg) {
1546                         encap.msg[encap.msglen] = 0;
1547                         TheMessage = convert_internet_message(encap.msg);
1548                         encap.msg = NULL;       /* no free() here, TheMessage owns it now */
1549
1550                         /* Now we let it fall through to the bottom of this
1551                          * function, because TheMessage now contains the
1552                          * encapsulated message instead of the top-level
1553                          * message.  Isn't that neat?
1554                          */
1555
1556                 }
1557                 else {
1558                         if (do_proto) cprintf("%d msg %ld has no part %s\n",
1559                                 ERROR + MESSAGE_NOT_FOUND, msg_num, section);
1560                         retcode = om_no_such_msg;
1561                 }
1562
1563         }
1564
1565         /* Ok, output the message now */
1566         retcode = CtdlOutputPreLoadedMsg(TheMessage, mode, headers_only, do_proto, crlf, flags);
1567         CtdlFreeMessage(TheMessage);
1568
1569         return(retcode);
1570 }
1571
1572
1573 char *qp_encode_email_addrs(char *source)
1574 {
1575         char user[256], node[256], name[256];
1576         const char headerStr[] = "=?UTF-8?Q?";
1577         char *Encoded;
1578         char *EncodedName;
1579         char *nPtr;
1580         int need_to_encode = 0;
1581         long SourceLen;
1582         long EncodedMaxLen;
1583         long nColons = 0;
1584         long *AddrPtr;
1585         long *AddrUtf8;
1586         long nAddrPtrMax = 50;
1587         long nmax;
1588         int InQuotes = 0;
1589         int i, n;
1590
1591         if (source == NULL) return source;
1592         if (IsEmptyStr(source)) return source;
1593
1594         AddrPtr = malloc (sizeof (long) * nAddrPtrMax);
1595         AddrUtf8 = malloc (sizeof (long) * nAddrPtrMax);
1596         memset(AddrUtf8, 0, sizeof (long) * nAddrPtrMax);
1597         *AddrPtr = 0;
1598         i = 0;
1599         while (!IsEmptyStr (&source[i])) {
1600                 if (nColons >= nAddrPtrMax){
1601                         long *ptr;
1602
1603                         ptr = (long *) malloc(sizeof (long) * nAddrPtrMax * 2);
1604                         memcpy (ptr, AddrPtr, sizeof (long) * nAddrPtrMax);
1605                         free (AddrPtr), AddrPtr = ptr;
1606
1607                         ptr = (long *) malloc(sizeof (long) * nAddrPtrMax * 2);
1608                         memset(&ptr[nAddrPtrMax], 0,
1609                                sizeof (long) * nAddrPtrMax);
1610
1611                         memcpy (ptr, AddrUtf8, sizeof (long) * nAddrPtrMax);
1612                         free (AddrUtf8), AddrUtf8 = ptr;
1613                         nAddrPtrMax *= 2;
1614                 }
1615                 if (((unsigned char) source[i] < 32) ||
1616                     ((unsigned char) source[i] > 126)) {
1617                         need_to_encode = 1;
1618                         AddrUtf8[nColons] = 1;
1619                 }
1620                 if (source[i] == '"')
1621                         InQuotes = !InQuotes;
1622                 if (!InQuotes && source[i] == ',') {
1623                         AddrPtr[nColons] = i;
1624                         nColons++;
1625                 }
1626                 i++;
1627         }
1628         if (need_to_encode == 0) {
1629                 free(AddrPtr);
1630                 free(AddrUtf8);
1631                 return source;
1632         }
1633
1634         SourceLen = i;
1635         EncodedMaxLen = nColons * (sizeof(headerStr) + 3) + SourceLen * 3;
1636         Encoded = (char*) malloc (EncodedMaxLen);
1637
1638         for (i = 0; i < nColons; i++)
1639                 source[AddrPtr[i]++] = '\0';
1640
1641         nPtr = Encoded;
1642         *nPtr = '\0';
1643         for (i = 0; i < nColons && nPtr != NULL; i++) {
1644                 nmax = EncodedMaxLen - (nPtr - Encoded);
1645                 if (AddrUtf8[i]) {
1646                         process_rfc822_addr(&source[AddrPtr[i]],
1647                                             user,
1648                                             node,
1649                                             name);
1650                         /* TODO: libIDN here ! */
1651                         if (IsEmptyStr(name)) {
1652                                 n = snprintf(nPtr, nmax,
1653                                              (i==0)?"%s@%s" : ",%s@%s",
1654                                              user, node);
1655                         }
1656                         else {
1657                                 EncodedName = rfc2047encode(name, strlen(name));
1658                                 n = snprintf(nPtr, nmax,
1659                                              (i==0)?"%s <%s@%s>" : ",%s <%s@%s>",
1660                                              EncodedName, user, node);
1661                                 free(EncodedName);
1662                         }
1663                 }
1664                 else {
1665                         n = snprintf(nPtr, nmax,
1666                                      (i==0)?"%s" : ",%s",
1667                                      &source[AddrPtr[i]]);
1668                 }
1669                 if (n > 0 )
1670                         nPtr += n;
1671                 else {
1672                         char *ptr, *nnPtr;
1673                         ptr = (char*) malloc(EncodedMaxLen * 2);
1674                         memcpy(ptr, Encoded, EncodedMaxLen);
1675                         nnPtr = ptr + (nPtr - Encoded), nPtr = nnPtr;
1676                         free(Encoded), Encoded = ptr;
1677                         EncodedMaxLen *= 2;
1678                         i--; /* do it once more with properly lengthened buffer */
1679                 }
1680         }
1681         for (i = 0; i < nColons; i++)
1682                 source[--AddrPtr[i]] = ',';
1683         free(AddrUtf8);
1684         free(AddrPtr);
1685         return Encoded;
1686 }
1687
1688
1689 /* If the last item in a list of recipients was truncated to a partial address,
1690  * remove it completely in order to avoid choking libSieve
1691  */
1692 void sanitize_truncated_recipient(char *str)
1693 {
1694         if (!str) return;
1695         if (num_tokens(str, ',') < 2) return;
1696
1697         int len = strlen(str);
1698         if (len < 900) return;
1699         if (len > 998) str[998] = 0;
1700
1701         char *cptr = strrchr(str, ',');
1702         if (!cptr) return;
1703
1704         char *lptr = strchr(cptr, '<');
1705         char *rptr = strchr(cptr, '>');
1706
1707         if ( (lptr) && (rptr) && (rptr > lptr) ) return;
1708
1709         *cptr = 0;
1710 }
1711
1712
1713
1714 /*
1715  * Get a message off disk.  (returns om_* values found in msgbase.h)
1716  */
1717 int CtdlOutputPreLoadedMsg(
1718                 struct CtdlMessage *TheMessage,
1719                 int mode,               /* how would you like that message? */
1720                 int headers_only,       /* eschew the message body? */
1721                 int do_proto,           /* do Citadel protocol responses? */
1722                 int crlf,               /* Use CRLF newlines instead of LF? */
1723                 int flags               /* should the bessage be exported clean? */
1724 ) {
1725         int i, j, k;
1726         char buf[SIZ];
1727         cit_uint8_t ch, prev_ch;
1728         char allkeys[30];
1729         char display_name[256];
1730         char *mptr, *mpptr;
1731         const char *nl; /* newline string */
1732         int suppress_f = 0;
1733         int subject_found = 0;
1734         struct ma_info ma;
1735
1736         /* Buffers needed for RFC822 translation.  These are all filled
1737          * using functions that are bounds-checked, and therefore we can
1738          * make them substantially smaller than SIZ.
1739          */
1740         char suser[100];
1741         char luser[100];
1742         char fuser[100];
1743         char snode[100];
1744         char mid[100];
1745         char datestamp[100];
1746
1747         CtdlLogPrintf(CTDL_DEBUG, "CtdlOutputPreLoadedMsg(TheMessage=%s, %d, %d, %d, %d\n",
1748                 ((TheMessage == NULL) ? "NULL" : "not null"),
1749                 mode, headers_only, do_proto, crlf);
1750
1751         strcpy(mid, "unknown");
1752         nl = (crlf ? "\r\n" : "\n");
1753
1754         if (!is_valid_message(TheMessage)) {
1755                 CtdlLogPrintf(CTDL_ERR,
1756                         "ERROR: invalid preloaded message for output\n");
1757                 cit_backtrace ();
1758                 return(om_no_such_msg);
1759         }
1760
1761         /* Suppress envelope recipients if required to avoid disclosing BCC addresses.
1762          * Pad it with spaces in order to avoid changing the RFC822 length of the message.
1763          */
1764         if ( (flags & SUPPRESS_ENV_TO) && (TheMessage->cm_fields['V'] != NULL) ) {
1765                 memset(TheMessage->cm_fields['V'], ' ', strlen(TheMessage->cm_fields['V']));
1766         }
1767
1768         /* Are we downloading a MIME component? */
1769         if (mode == MT_DOWNLOAD) {
1770                 if (TheMessage->cm_format_type != FMT_RFC822) {
1771                         if (do_proto)
1772                                 cprintf("%d This is not a MIME message.\n",
1773                                 ERROR + ILLEGAL_VALUE);
1774                 } else if (CC->download_fp != NULL) {
1775                         if (do_proto) cprintf(
1776                                 "%d You already have a download open.\n",
1777                                 ERROR + RESOURCE_BUSY);
1778                 } else {
1779                         /* Parse the message text component */
1780                         mptr = TheMessage->cm_fields['M'];
1781                         mime_parser(mptr, NULL, *mime_download, NULL, NULL, NULL, 0);
1782                         /* If there's no file open by this time, the requested
1783                          * section wasn't found, so print an error
1784                          */
1785                         if (CC->download_fp == NULL) {
1786                                 if (do_proto) cprintf(
1787                                         "%d Section %s not found.\n",
1788                                         ERROR + FILE_NOT_FOUND,
1789                                         CC->download_desired_section);
1790                         }
1791                 }
1792                 return((CC->download_fp != NULL) ? om_ok : om_mime_error);
1793         }
1794
1795         /* MT_SPEW_SECTION is like MT_DOWNLOAD except it outputs the whole MIME part
1796          * in a single server operation instead of opening a download file.
1797          */
1798         if (mode == MT_SPEW_SECTION) {
1799                 if (TheMessage->cm_format_type != FMT_RFC822) {
1800                         if (do_proto)
1801                                 cprintf("%d This is not a MIME message.\n",
1802                                 ERROR + ILLEGAL_VALUE);
1803                 } else {
1804                         /* Parse the message text component */
1805                         int found_it = 0;
1806
1807                         mptr = TheMessage->cm_fields['M'];
1808                         mime_parser(mptr, NULL, *mime_spew_section, NULL, NULL, (void *)&found_it, 0);
1809                         /* If section wasn't found, print an error
1810                          */
1811                         if (!found_it) {
1812                                 if (do_proto) cprintf(
1813                                         "%d Section %s not found.\n",
1814                                         ERROR + FILE_NOT_FOUND,
1815                                         CC->download_desired_section);
1816                         }
1817                 }
1818                 return((CC->download_fp != NULL) ? om_ok : om_mime_error);
1819         }
1820
1821         /* now for the user-mode message reading loops */
1822         if (do_proto) cprintf("%d msg:\n", LISTING_FOLLOWS);
1823
1824         /* Does the caller want to skip the headers? */
1825         if (headers_only == HEADERS_NONE) goto START_TEXT;
1826
1827         /* Tell the client which format type we're using. */
1828         if ( (mode == MT_CITADEL) && (do_proto) ) {
1829                 cprintf("type=%d\n", TheMessage->cm_format_type);
1830         }
1831
1832         /* nhdr=yes means that we're only displaying headers, no body */
1833         if ( (TheMessage->cm_anon_type == MES_ANONONLY)
1834            && ((mode == MT_CITADEL) || (mode == MT_MIME))
1835            && (do_proto)
1836            ) {
1837                 cprintf("nhdr=yes\n");
1838         }
1839
1840         /* begin header processing loop for Citadel message format */
1841
1842         if ((mode == MT_CITADEL) || (mode == MT_MIME)) {
1843
1844                 safestrncpy(display_name, "<unknown>", sizeof display_name);
1845                 if (TheMessage->cm_fields['A']) {
1846                         strcpy(buf, TheMessage->cm_fields['A']);
1847                         if (TheMessage->cm_anon_type == MES_ANONONLY) {
1848                                 safestrncpy(display_name, "****", sizeof display_name);
1849                         }
1850                         else if (TheMessage->cm_anon_type == MES_ANONOPT) {
1851                                 safestrncpy(display_name, "anonymous", sizeof display_name);
1852                         }
1853                         else {
1854                                 safestrncpy(display_name, buf, sizeof display_name);
1855                         }
1856                         if ((is_room_aide())
1857                             && ((TheMessage->cm_anon_type == MES_ANONONLY)
1858                              || (TheMessage->cm_anon_type == MES_ANONOPT))) {
1859                                 size_t tmp = strlen(display_name);
1860                                 snprintf(&display_name[tmp],
1861                                          sizeof display_name - tmp,
1862                                          " [%s]", buf);
1863                         }
1864                 }
1865
1866                 /* Don't show Internet address for users on the
1867                  * local Citadel network.
1868                  */
1869                 suppress_f = 0;
1870                 if (TheMessage->cm_fields['N'] != NULL)
1871                    if (!IsEmptyStr(TheMessage->cm_fields['N']))
1872                       if (haschar(TheMessage->cm_fields['N'], '.') == 0) {
1873                         suppress_f = 1;
1874                 }
1875
1876                 /* Now spew the header fields in the order we like them. */
1877                 safestrncpy(allkeys, FORDER, sizeof allkeys);
1878                 for (i=0; i<strlen(allkeys); ++i) {
1879                         k = (int) allkeys[i];
1880                         if (k != 'M') {
1881                                 if ( (TheMessage->cm_fields[k] != NULL)
1882                                    && (msgkeys[k] != NULL) ) {
1883                                         if ((k == 'V') || (k == 'R') || (k == 'Y')) {
1884                                                 sanitize_truncated_recipient(TheMessage->cm_fields[k]);
1885                                         }
1886                                         if (k == 'A') {
1887                                                 if (do_proto) cprintf("%s=%s\n",
1888                                                         msgkeys[k],
1889                                                         display_name);
1890                                         }
1891                                         else if ((k == 'F') && (suppress_f)) {
1892                                                 /* do nothing */
1893                                         }
1894                                         /* Masquerade display name if needed */
1895                                         else {
1896                                                 if (do_proto) cprintf("%s=%s\n",
1897                                                         msgkeys[k],
1898                                                         TheMessage->cm_fields[k]
1899                                         );
1900                                         }
1901                                 }
1902                         }
1903                 }
1904
1905         }
1906
1907         /* begin header processing loop for RFC822 transfer format */
1908
1909         strcpy(suser, "");
1910         strcpy(luser, "");
1911         strcpy(fuser, "");
1912         strcpy(snode, NODENAME);
1913         if (mode == MT_RFC822) {
1914                 for (i = 0; i < 256; ++i) {
1915                         if (TheMessage->cm_fields[i]) {
1916                                 mptr = mpptr = TheMessage->cm_fields[i];
1917
1918                                 if (i == 'A') {
1919                                         safestrncpy(luser, mptr, sizeof luser);
1920                                         safestrncpy(suser, mptr, sizeof suser);
1921                                 }
1922                                 else if (i == 'Y') {
1923                                         if ((flags & QP_EADDR) != 0) {
1924                                                 mptr = qp_encode_email_addrs(mptr);
1925                                         }
1926                                         sanitize_truncated_recipient(mptr);
1927                                         cprintf("CC: %s%s", mptr, nl);
1928                                 }
1929                                 else if (i == 'P') {
1930                                         cprintf("Return-Path: %s%s", mptr, nl);
1931                                 }
1932                                 else if (i == 'L') {
1933                                         cprintf("List-ID: %s%s", mptr, nl);
1934                                 }
1935                                 else if (i == 'V') {
1936                                         if ((flags & QP_EADDR) != 0)
1937                                                 mptr = qp_encode_email_addrs(mptr);
1938                                         cprintf("Envelope-To: %s%s", mptr, nl);
1939                                 }
1940                                 else if (i == 'U') {
1941                                         cprintf("Subject: %s%s", mptr, nl);
1942                                         subject_found = 1;
1943                                 }
1944                                 else if (i == 'I')
1945                                         safestrncpy(mid, mptr, sizeof mid);
1946                                 else if (i == 'F')
1947                                         safestrncpy(fuser, mptr, sizeof fuser);
1948                                 /* else if (i == 'O')
1949                                         cprintf("X-Citadel-Room: %s%s",
1950                                                 mptr, nl); */
1951                                 else if (i == 'N')
1952                                         safestrncpy(snode, mptr, sizeof snode);
1953                                 else if (i == 'R')
1954                                 {
1955                                         if (haschar(mptr, '@') == 0)
1956                                         {
1957                                                 sanitize_truncated_recipient(mptr);
1958                                                 cprintf("To: %s@%s", mptr, config.c_fqdn);
1959                                                 cprintf("%s", nl);
1960                                         }
1961                                         else
1962                                         {
1963                                                 if ((flags & QP_EADDR) != 0) {
1964                                                         mptr = qp_encode_email_addrs(mptr);
1965                                                 }
1966                                                 sanitize_truncated_recipient(mptr);
1967                                                 cprintf("To: %s", mptr);
1968                                                 cprintf("%s", nl);
1969                                         }
1970                                 }
1971                                 else if (i == 'T') {
1972                                         datestring(datestamp, sizeof datestamp,
1973                                                 atol(mptr), DATESTRING_RFC822);
1974                                         cprintf("Date: %s%s", datestamp, nl);
1975                                 }
1976                                 else if (i == 'W') {
1977                                         cprintf("References: ");
1978                                         k = num_tokens(mptr, '|');
1979                                         for (j=0; j<k; ++j) {
1980                                                 extract_token(buf, mptr, j, '|', sizeof buf);
1981                                                 cprintf("<%s>", buf);
1982                                                 if (j == (k-1)) {
1983                                                         cprintf("%s", nl);
1984                                                 }
1985                                                 else {
1986                                                         cprintf(" ");
1987                                                 }
1988                                         }
1989                                 }
1990                                 if (mptr != mpptr)
1991                                         free (mptr);
1992                         }
1993                 }
1994                 if (subject_found == 0) {
1995                         cprintf("Subject: (no subject)%s", nl);
1996                 }
1997         }
1998
1999         for (i=0; !IsEmptyStr(&suser[i]); ++i) {
2000                 suser[i] = tolower(suser[i]);
2001                 if (!isalnum(suser[i])) suser[i]='_';
2002         }
2003
2004         if (mode == MT_RFC822) {
2005                 if (!strcasecmp(snode, NODENAME)) {
2006                         safestrncpy(snode, FQDN, sizeof snode);
2007                 }
2008
2009                 /* Construct a fun message id */
2010                 cprintf("Message-ID: <%s", mid);/// todo: this possibly breaks threadding mails.
2011                 if (strchr(mid, '@')==NULL) {
2012                         cprintf("@%s", snode);
2013                 }
2014                 cprintf(">%s", nl);
2015
2016                 if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONONLY)) {
2017                         cprintf("From: \"----\" <x@x.org>%s", nl);
2018                 }
2019                 else if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONOPT)) {
2020                         cprintf("From: \"anonymous\" <x@x.org>%s", nl);
2021                 }
2022                 else if (!IsEmptyStr(fuser)) {
2023                         cprintf("From: \"%s\" <%s>%s", luser, fuser, nl);
2024                 }
2025                 else {
2026                         cprintf("From: \"%s\" <%s@%s>%s", luser, suser, snode, nl);
2027                 }
2028
2029                 /* Blank line signifying RFC822 end-of-headers */
2030                 if (TheMessage->cm_format_type != FMT_RFC822) {
2031                         cprintf("%s", nl);
2032                 }
2033         }
2034
2035         /* end header processing loop ... at this point, we're in the text */
2036 START_TEXT:
2037         if (headers_only == HEADERS_FAST) goto DONE;
2038         mptr = TheMessage->cm_fields['M'];
2039
2040         /* Tell the client about the MIME parts in this message */
2041         if (TheMessage->cm_format_type == FMT_RFC822) {
2042                 if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
2043                         memset(&ma, 0, sizeof(struct ma_info));
2044                         mime_parser(mptr, NULL,
2045                                 (do_proto ? *list_this_part : NULL),
2046                                 (do_proto ? *list_this_pref : NULL),
2047                                 (do_proto ? *list_this_suff : NULL),
2048                                 (void *)&ma, 0);
2049                 }
2050                 else if (mode == MT_RFC822) {   /* unparsed RFC822 dump */
2051                         int eoh = 0;
2052                         const char *StartOfText = StrBufNOTNULL;
2053
2054                         char outbuf[1024];
2055                         int outlen = 0;
2056                         int nllen = strlen(nl);
2057                         prev_ch = '\0';
2058                         while (*mptr != '\0') {
2059                                 if (*mptr == '\r') {
2060                                         /* do nothing */
2061                                 }
2062                                 else {
2063                                         if ((!eoh) &&
2064                                             (*mptr == '\n'))
2065                                         {
2066                                                 eoh = (*(mptr+1) == '\r') && (*(mptr+2) == '\n');
2067                                                 if (!eoh)
2068                                                         eoh = *(mptr+1) == '\n';
2069                                                 if (eoh)
2070                                                 {
2071                                                         StartOfText = mptr;
2072                                                         StartOfText = strchr(StartOfText, '\n');
2073                                                         StartOfText = strchr(StartOfText, '\n');
2074                                                 }
2075                                         }
2076                                         if (((headers_only == HEADERS_NONE) && (mptr >= StartOfText)) ||
2077                                             ((headers_only == HEADERS_ONLY) && (mptr < StartOfText)) ||
2078                                             ((headers_only != HEADERS_NONE) &&
2079                                              (headers_only != HEADERS_ONLY))
2080                                         ) {
2081                                                 if (*mptr == '\n') {
2082                                                         memcpy(&outbuf[outlen], nl, nllen);
2083                                                         outlen += nllen;
2084                                                         outbuf[outlen] = '\0';
2085                                                 }
2086                                                 else {
2087                                                         outbuf[outlen++] = *mptr;
2088                                                 }
2089                                         }
2090                                 }
2091                                 if (flags & ESC_DOT)
2092                                 {
2093                                         if ((prev_ch == '\n') &&
2094                                             (*mptr == '.') &&
2095                                             ((*(mptr+1) == '\r') || (*(mptr+1) == '\n')))
2096                                         {
2097                                                 outbuf[outlen++] = '.';
2098                                         }
2099                                         prev_ch = *mptr;
2100                                 }
2101                                 ++mptr;
2102                                 if (outlen > 1000) {
2103                                         client_write(outbuf, outlen);
2104                                         outlen = 0;
2105                                 }
2106                         }
2107                         if (outlen > 0) {
2108                                 client_write(outbuf, outlen);
2109                                 outlen = 0;
2110                         }
2111
2112                         goto DONE;
2113                 }
2114         }
2115
2116         if (headers_only == HEADERS_ONLY) {
2117                 goto DONE;
2118         }
2119
2120         /* signify start of msg text */
2121         if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
2122                 if (do_proto) cprintf("text\n");
2123         }
2124
2125         /* If the format type on disk is 1 (fixed-format), then we want
2126          * everything to be output completely literally ... regardless of
2127          * what message transfer format is in use.
2128          */
2129         if (TheMessage->cm_format_type == FMT_FIXED) {
2130                 int buflen;
2131                 int xlline = 0;
2132                 int nllen = strlen (nl);
2133                 if (mode == MT_MIME) {
2134                         cprintf("Content-type: text/plain\n\n");
2135                 }
2136                 *buf = '\0';
2137                 buflen = 0;
2138                 while (ch = *mptr++, ch > 0) {
2139                         if (ch == '\n')
2140                                 ch = '\r';
2141
2142                         if ((buflen > 250) && (!xlline)){
2143                                 int tbuflen;
2144                                 tbuflen = buflen;
2145
2146                                 while ((buflen > 0) &&
2147                                        (!isspace(buf[buflen])))
2148                                         buflen --;
2149                                 if (buflen == 0) {
2150                                         xlline = 1;
2151                                 }
2152                                 else {
2153                                         mptr -= tbuflen - buflen;
2154                                         buf[buflen] = '\0';
2155                                         ch = '\r';
2156                                 }
2157                         }
2158                         /* if we reach the outer bounds of our buffer,
2159                            abort without respect what whe purge. */
2160                         if (xlline &&
2161                             ((isspace(ch)) ||
2162                              (buflen > SIZ - nllen - 2)))
2163                                 ch = '\r';
2164
2165                         if (ch == '\r') {
2166                                 memcpy (&buf[buflen], nl, nllen);
2167                                 buflen += nllen;
2168                                 buf[buflen] = '\0';
2169
2170                                 client_write(buf, buflen);
2171                                 *buf = '\0';
2172                                 buflen = 0;
2173                                 xlline = 0;
2174                         } else {
2175                                 buf[buflen] = ch;
2176                                 buflen++;
2177                         }
2178                 }
2179                 buf[buflen] = '\0';
2180                 if (!IsEmptyStr(buf))
2181                         cprintf("%s%s", buf, nl);
2182         }
2183
2184         /* If the message on disk is format 0 (Citadel vari-format), we
2185          * output using the formatter at 80 columns.  This is the final output
2186          * form if the transfer format is RFC822, but if the transfer format
2187          * is Citadel proprietary, it'll still work, because the indentation
2188          * for new paragraphs is correct and the client will reformat the
2189          * message to the reader's screen width.
2190          */
2191         if (TheMessage->cm_format_type == FMT_CITADEL) {
2192                 if (mode == MT_MIME) {
2193                         cprintf("Content-type: text/x-citadel-variformat\n\n");
2194                 }
2195                 memfmout(mptr, nl);
2196         }
2197
2198         /* If the message on disk is format 4 (MIME), we've gotta hand it
2199          * off to the MIME parser.  The client has already been told that
2200          * this message is format 1 (fixed format), so the callback function
2201          * we use will display those parts as-is.
2202          */
2203         if (TheMessage->cm_format_type == FMT_RFC822) {
2204                 memset(&ma, 0, sizeof(struct ma_info));
2205
2206                 if (mode == MT_MIME) {
2207                         ma.use_fo_hooks = 0;
2208                         strcpy(ma.chosen_part, "1");
2209                         ma.chosen_pref = 9999;
2210                         mime_parser(mptr, NULL,
2211                                 *choose_preferred, *fixed_output_pre,
2212                                 *fixed_output_post, (void *)&ma, 0);
2213                         mime_parser(mptr, NULL,
2214                                 *output_preferred, NULL, NULL, (void *)&ma, CC->msg4_dont_decode);
2215                 }
2216                 else {
2217                         ma.use_fo_hooks = 1;
2218                         mime_parser(mptr, NULL,
2219                                 *fixed_output, *fixed_output_pre,
2220                                 *fixed_output_post, (void *)&ma, 0);
2221                 }
2222
2223         }
2224
2225 DONE:   /* now we're done */
2226         if (do_proto) cprintf("000\n");
2227         return(om_ok);
2228 }
2229
2230
2231 /*
2232  * display a message (mode 0 - Citadel proprietary)
2233  */
2234 void cmd_msg0(char *cmdbuf)
2235 {
2236         long msgid;
2237         int headers_only = HEADERS_ALL;
2238
2239         msgid = extract_long(cmdbuf, 0);
2240         headers_only = extract_int(cmdbuf, 1);
2241
2242         CtdlOutputMsg(msgid, MT_CITADEL, headers_only, 1, 0, NULL, 0);
2243         return;
2244 }
2245
2246
2247 /*
2248  * display a message (mode 2 - RFC822)
2249  */
2250 void cmd_msg2(char *cmdbuf)
2251 {
2252         long msgid;
2253         int headers_only = HEADERS_ALL;
2254
2255         msgid = extract_long(cmdbuf, 0);
2256         headers_only = extract_int(cmdbuf, 1);
2257
2258         CtdlOutputMsg(msgid, MT_RFC822, headers_only, 1, 1, NULL, 0);
2259 }
2260
2261
2262
2263 /*
2264  * display a message (mode 3 - IGnet raw format - internal programs only)
2265  */
2266 void cmd_msg3(char *cmdbuf)
2267 {
2268         long msgnum;
2269         struct CtdlMessage *msg = NULL;
2270         struct ser_ret smr;
2271
2272         if (CC->internal_pgm == 0) {
2273                 cprintf("%d This command is for internal programs only.\n",
2274                         ERROR + HIGHER_ACCESS_REQUIRED);
2275                 return;
2276         }
2277
2278         msgnum = extract_long(cmdbuf, 0);
2279         msg = CtdlFetchMessage(msgnum, 1);
2280         if (msg == NULL) {
2281                 cprintf("%d Message %ld not found.\n",
2282                         ERROR + MESSAGE_NOT_FOUND, msgnum);
2283                 return;
2284         }
2285
2286         serialize_message(&smr, msg);
2287         CtdlFreeMessage(msg);
2288
2289         if (smr.len == 0) {
2290                 cprintf("%d Unable to serialize message\n",
2291                         ERROR + INTERNAL_ERROR);
2292                 return;
2293         }
2294
2295         cprintf("%d %ld\n", BINARY_FOLLOWS, (long)smr.len);
2296         client_write((char *)smr.ser, (int)smr.len);
2297         free(smr.ser);
2298 }
2299
2300
2301
2302 /*
2303  * Display a message using MIME content types
2304  */
2305 void cmd_msg4(char *cmdbuf)
2306 {
2307         long msgid;
2308         char section[64];
2309
2310         msgid = extract_long(cmdbuf, 0);
2311         extract_token(section, cmdbuf, 1, '|', sizeof section);
2312         CtdlOutputMsg(msgid, MT_MIME, 0, 1, 0, (section[0] ? section : NULL) , 0);
2313 }
2314
2315
2316
2317 /*
2318  * Client tells us its preferred message format(s)
2319  */
2320 void cmd_msgp(char *cmdbuf)
2321 {
2322         if (!strcasecmp(cmdbuf, "dont_decode")) {
2323                 CC->msg4_dont_decode = 1;
2324                 cprintf("%d MSG4 will not pre-decode messages.\n", CIT_OK);
2325         }
2326         else {
2327                 safestrncpy(CC->preferred_formats, cmdbuf, sizeof(CC->preferred_formats));
2328                 cprintf("%d Preferred MIME formats have been set.\n", CIT_OK);
2329         }
2330 }
2331
2332
2333 /*
2334  * Open a component of a MIME message as a download file
2335  */
2336 void cmd_opna(char *cmdbuf)
2337 {
2338         long msgid;
2339         char desired_section[128];
2340
2341         msgid = extract_long(cmdbuf, 0);
2342         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2343         safestrncpy(CC->download_desired_section, desired_section,
2344                 sizeof CC->download_desired_section);
2345         CtdlOutputMsg(msgid, MT_DOWNLOAD, 0, 1, 1, NULL, 0);
2346 }
2347
2348
2349 /*
2350  * Open a component of a MIME message and transmit it all at once
2351  */
2352 void cmd_dlat(char *cmdbuf)
2353 {
2354         long msgid;
2355         char desired_section[128];
2356
2357         msgid = extract_long(cmdbuf, 0);
2358         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2359         safestrncpy(CC->download_desired_section, desired_section,
2360                 sizeof CC->download_desired_section);
2361         CtdlOutputMsg(msgid, MT_SPEW_SECTION, 0, 1, 1, NULL, 0);
2362 }
2363
2364
2365 /*
2366  * Save one or more message pointers into a specified room
2367  * (Returns 0 for success, nonzero for failure)
2368  * roomname may be NULL to use the current room
2369  *
2370  * Note that the 'supplied_msg' field may be set to NULL, in which case
2371  * the message will be fetched from disk, by number, if we need to perform
2372  * replication checks.  This adds an additional database read, so if the
2373  * caller already has the message in memory then it should be supplied.  (Obviously
2374  * this mode of operation only works if we're saving a single message.)
2375  */
2376 int CtdlSaveMsgPointersInRoom(char *roomname, long newmsgidlist[], int num_newmsgs,
2377                         int do_repl_check, struct CtdlMessage *supplied_msg, int suppress_refcount_adj
2378 ) {
2379         int i, j, unique;
2380         char hold_rm[ROOMNAMELEN];
2381         struct cdbdata *cdbfr;
2382         int num_msgs;
2383         long *msglist;
2384         long highest_msg = 0L;
2385
2386         long msgid = 0;
2387         struct CtdlMessage *msg = NULL;
2388
2389         long *msgs_to_be_merged = NULL;
2390         int num_msgs_to_be_merged = 0;
2391
2392         CtdlLogPrintf(CTDL_DEBUG,
2393                 "CtdlSaveMsgPointersInRoom(room=%s, num_msgs=%d, repl=%d, suppress_rca=%d)\n",
2394                 roomname, num_newmsgs, do_repl_check, suppress_refcount_adj
2395         );
2396
2397         strcpy(hold_rm, CC->room.QRname);
2398
2399         /* Sanity checks */
2400         if (newmsgidlist == NULL) return(ERROR + INTERNAL_ERROR);
2401         if (num_newmsgs < 1) return(ERROR + INTERNAL_ERROR);
2402         if (num_newmsgs > 1) supplied_msg = NULL;
2403
2404         /* Now the regular stuff */
2405         if (CtdlGetRoomLock(&CC->room,
2406            ((roomname != NULL) ? roomname : CC->room.QRname) )
2407            != 0) {
2408                 CtdlLogPrintf(CTDL_ERR, "No such room <%s>\n", roomname);
2409                 return(ERROR + ROOM_NOT_FOUND);
2410         }
2411
2412
2413         msgs_to_be_merged = malloc(sizeof(long) * num_newmsgs);
2414         num_msgs_to_be_merged = 0;
2415
2416
2417         cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
2418         if (cdbfr == NULL) {
2419                 msglist = NULL;
2420                 num_msgs = 0;
2421         } else {
2422                 msglist = (long *) cdbfr->ptr;
2423                 cdbfr->ptr = NULL;      /* CtdlSaveMsgPointerInRoom() now owns this memory */
2424                 num_msgs = cdbfr->len / sizeof(long);
2425                 cdb_free(cdbfr);
2426         }
2427
2428
2429         /* Create a list of msgid's which were supplied by the caller, but do
2430          * not already exist in the target room.  It is absolutely taboo to
2431          * have more than one reference to the same message in a room.
2432          */
2433         for (i=0; i<num_newmsgs; ++i) {
2434                 unique = 1;
2435                 if (num_msgs > 0) for (j=0; j<num_msgs; ++j) {
2436                         if (msglist[j] == newmsgidlist[i]) {
2437                                 unique = 0;
2438                         }
2439                 }
2440                 if (unique) {
2441                         msgs_to_be_merged[num_msgs_to_be_merged++] = newmsgidlist[i];
2442                 }
2443         }
2444
2445         CtdlLogPrintf(9, "%d unique messages to be merged\n", num_msgs_to_be_merged);
2446
2447         /*
2448          * Now merge the new messages
2449          */
2450         msglist = realloc(msglist, (sizeof(long) * (num_msgs + num_msgs_to_be_merged)) );
2451         if (msglist == NULL) {
2452                 CtdlLogPrintf(CTDL_ALERT, "ERROR: can't realloc message list!\n");
2453         }
2454         memcpy(&msglist[num_msgs], msgs_to_be_merged, (sizeof(long) * num_msgs_to_be_merged) );
2455         num_msgs += num_msgs_to_be_merged;
2456
2457         /* Sort the message list, so all the msgid's are in order */
2458         num_msgs = sort_msglist(msglist, num_msgs);
2459
2460         /* Determine the highest message number */
2461         highest_msg = msglist[num_msgs - 1];
2462
2463         /* Write it back to disk. */
2464         cdb_store(CDB_MSGLISTS, &CC->room.QRnumber, (int)sizeof(long),
2465                   msglist, (int)(num_msgs * sizeof(long)));
2466
2467         /* Free up the memory we used. */
2468         free(msglist);
2469
2470         /* Update the highest-message pointer and unlock the room. */
2471         CC->room.QRhighest = highest_msg;
2472         CtdlPutRoomLock(&CC->room);
2473
2474         /* Perform replication checks if necessary */
2475         if ( (DoesThisRoomNeedEuidIndexing(&CC->room)) && (do_repl_check) ) {
2476                 CtdlLogPrintf(CTDL_DEBUG, "CtdlSaveMsgPointerInRoom() doing repl checks\n");
2477
2478                 for (i=0; i<num_msgs_to_be_merged; ++i) {
2479                         msgid = msgs_to_be_merged[i];
2480
2481                         if (supplied_msg != NULL) {
2482                                 msg = supplied_msg;
2483                         }
2484                         else {
2485                                 msg = CtdlFetchMessage(msgid, 0);
2486                         }
2487
2488                         if (msg != NULL) {
2489                                 ReplicationChecks(msg);
2490
2491                                 /* If the message has an Exclusive ID, index that... */
2492                                 if (msg->cm_fields['E'] != NULL) {
2493                                         index_message_by_euid(msg->cm_fields['E'], &CC->room, msgid);
2494                                 }
2495
2496                                 /* Free up the memory we may have allocated */
2497                                 if (msg != supplied_msg) {
2498                                         CtdlFreeMessage(msg);
2499                                 }
2500                         }
2501
2502                 }
2503         }
2504
2505         else {
2506                 CtdlLogPrintf(CTDL_DEBUG, "CtdlSaveMsgPointerInRoom() skips repl checks\n");
2507         }
2508
2509         /* Submit this room for processing by hooks */
2510         PerformRoomHooks(&CC->room);
2511
2512         /* Go back to the room we were in before we wandered here... */
2513         CtdlGetRoom(&CC->room, hold_rm);
2514
2515         /* Bump the reference count for all messages which were merged */
2516         if (!suppress_refcount_adj) {
2517                 for (i=0; i<num_msgs_to_be_merged; ++i) {
2518                         AdjRefCount(msgs_to_be_merged[i], +1);
2519                 }
2520         }
2521
2522         /* Free up memory... */
2523         if (msgs_to_be_merged != NULL) {
2524                 free(msgs_to_be_merged);
2525         }
2526
2527         /* Return success. */
2528         return (0);
2529 }
2530
2531
2532 /*
2533  * This is the same as CtdlSaveMsgPointersInRoom() but it only accepts
2534  * a single message.
2535  */
2536 int CtdlSaveMsgPointerInRoom(char *roomname, long msgid,
2537                         int do_repl_check, struct CtdlMessage *supplied_msg)
2538 {
2539         return CtdlSaveMsgPointersInRoom(roomname, &msgid, 1, do_repl_check, supplied_msg, 0);
2540 }
2541
2542
2543
2544
2545 /*
2546  * Message base operation to save a new message to the message store
2547  * (returns new message number)
2548  *
2549  * This is the back end for CtdlSubmitMsg() and should not be directly
2550  * called by server-side modules.
2551  *
2552  */
2553 long send_message(struct CtdlMessage *msg) {
2554         long newmsgid;
2555         long retval;
2556         char msgidbuf[256];
2557         struct ser_ret smr;
2558         int is_bigmsg = 0;
2559         char *holdM = NULL;
2560
2561         /* Get a new message number */
2562         newmsgid = get_new_message_number();
2563         snprintf(msgidbuf, sizeof msgidbuf, "%010ld@%s", newmsgid, config.c_fqdn);
2564
2565         /* Generate an ID if we don't have one already */
2566         if (msg->cm_fields['I']==NULL) {
2567                 msg->cm_fields['I'] = strdup(msgidbuf);
2568         }
2569
2570         /* If the message is big, set its body aside for storage elsewhere */
2571         if (msg->cm_fields['M'] != NULL) {
2572                 if (strlen(msg->cm_fields['M']) > BIGMSG) {
2573                         is_bigmsg = 1;
2574                         holdM = msg->cm_fields['M'];
2575                         msg->cm_fields['M'] = NULL;
2576                 }
2577         }
2578
2579         /* Serialize our data structure for storage in the database */
2580         serialize_message(&smr, msg);
2581
2582         if (is_bigmsg) {
2583                 msg->cm_fields['M'] = holdM;
2584         }
2585
2586         if (smr.len == 0) {
2587                 cprintf("%d Unable to serialize message\n",
2588                         ERROR + INTERNAL_ERROR);
2589                 return (-1L);
2590         }
2591
2592         /* Write our little bundle of joy into the message base */
2593         if (cdb_store(CDB_MSGMAIN, &newmsgid, (int)sizeof(long),
2594                       smr.ser, smr.len) < 0) {
2595                 CtdlLogPrintf(CTDL_ERR, "Can't store message\n");
2596                 retval = 0L;
2597         } else {
2598                 if (is_bigmsg) {
2599                         cdb_store(CDB_BIGMSGS,
2600                                 &newmsgid,
2601                                 (int)sizeof(long),
2602                                 holdM,
2603                                 (strlen(holdM) + 1)
2604                         );
2605                 }
2606                 retval = newmsgid;
2607         }
2608
2609         /* Free the memory we used for the serialized message */
2610         free(smr.ser);
2611
2612         /* Return the *local* message ID to the caller
2613          * (even if we're storing an incoming network message)
2614          */
2615         return(retval);
2616 }
2617
2618
2619
2620 /*
2621  * Serialize a struct CtdlMessage into the format used on disk and network.
2622  *
2623  * This function loads up a "struct ser_ret" (defined in server.h) which
2624  * contains the length of the serialized message and a pointer to the
2625  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
2626  */
2627 void serialize_message(struct ser_ret *ret,             /* return values */
2628                         struct CtdlMessage *msg)        /* unserialized msg */
2629 {
2630         size_t wlen, fieldlen;
2631         int i;
2632         static char *forder = FORDER;
2633
2634         /*
2635          * Check for valid message format
2636          */
2637         if (is_valid_message(msg) == 0) {
2638                 CtdlLogPrintf(CTDL_ERR, "serialize_message() aborting due to invalid message\n");
2639                 ret->len = 0;
2640                 ret->ser = NULL;
2641                 return;
2642         }
2643
2644         ret->len = 3;
2645         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL)
2646                 ret->len = ret->len +
2647                         strlen(msg->cm_fields[(int)forder[i]]) + 2;
2648
2649         ret->ser = malloc(ret->len);
2650         if (ret->ser == NULL) {
2651                 CtdlLogPrintf(CTDL_ERR, "serialize_message() malloc(%ld) failed: %s\n",
2652                         (long)ret->len, strerror(errno));
2653                 ret->len = 0;
2654                 ret->ser = NULL;
2655                 return;
2656         }
2657
2658         ret->ser[0] = 0xFF;
2659         ret->ser[1] = msg->cm_anon_type;
2660         ret->ser[2] = msg->cm_format_type;
2661         wlen = 3;
2662
2663         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
2664                 fieldlen = strlen(msg->cm_fields[(int)forder[i]]);
2665                 ret->ser[wlen++] = (char)forder[i];
2666                 safestrncpy((char *)&ret->ser[wlen], msg->cm_fields[(int)forder[i]], fieldlen+1);
2667                 wlen = wlen + fieldlen + 1;
2668         }
2669         if (ret->len != wlen) CtdlLogPrintf(CTDL_ERR, "ERROR: len=%ld wlen=%ld\n",
2670                 (long)ret->len, (long)wlen);
2671
2672         return;
2673 }
2674
2675
2676 /*
2677  * Serialize a struct CtdlMessage into the format used on disk and network.
2678  *
2679  * This function loads up a "struct ser_ret" (defined in server.h) which
2680  * contains the length of the serialized message and a pointer to the
2681  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
2682  */
2683 void dump_message(struct CtdlMessage *msg,      /* unserialized msg */
2684                   long Siz)                     /* how many chars ? */
2685 {
2686         size_t wlen;
2687         int i;
2688         static char *forder = FORDER;
2689         char *buf;
2690
2691         /*
2692          * Check for valid message format
2693          */
2694         if (is_valid_message(msg) == 0) {
2695                 CtdlLogPrintf(CTDL_ERR, "dump_message() aborting due to invalid message\n");
2696                 return;
2697         }
2698
2699         buf = (char*) malloc (Siz + 1);
2700
2701         wlen = 3;
2702
2703         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
2704                         snprintf (buf, Siz, " msg[%c] = %s ...\n", (char) forder[i],
2705                                    msg->cm_fields[(int)forder[i]]);
2706                         client_write (buf, strlen(buf));
2707                 }
2708
2709         return;
2710 }
2711
2712
2713
2714 /*
2715  * Check to see if any messages already exist in the current room which
2716  * carry the same Exclusive ID as this one.  If any are found, delete them.
2717  */
2718 void ReplicationChecks(struct CtdlMessage *msg) {
2719         long old_msgnum = (-1L);
2720
2721         if (DoesThisRoomNeedEuidIndexing(&CC->room) == 0) return;
2722
2723         CtdlLogPrintf(CTDL_DEBUG, "Performing replication checks in <%s>\n",
2724                 CC->room.QRname);
2725
2726         /* No exclusive id?  Don't do anything. */
2727         if (msg == NULL) return;
2728         if (msg->cm_fields['E'] == NULL) return;
2729         if (IsEmptyStr(msg->cm_fields['E'])) return;
2730         /*CtdlLogPrintf(CTDL_DEBUG, "Exclusive ID: <%s> for room <%s>\n",
2731                 msg->cm_fields['E'], CC->room.QRname);*/
2732
2733         old_msgnum = CtdlLocateMessageByEuid(msg->cm_fields['E'], &CC->room);
2734         if (old_msgnum > 0L) {
2735                 CtdlLogPrintf(CTDL_DEBUG, "ReplicationChecks() replacing message %ld\n", old_msgnum);
2736                 CtdlDeleteMessages(CC->room.QRname, &old_msgnum, 1, "");
2737         }
2738 }
2739
2740
2741
2742 /*
2743  * Save a message to disk and submit it into the delivery system.
2744  */
2745 long CtdlSubmitMsg(struct CtdlMessage *msg,     /* message to save */
2746                    struct recptypes *recps,     /* recipients (if mail) */
2747                    char *force,                 /* force a particular room? */
2748                    int flags                    /* should the message be exported clean? */
2749 ) {
2750         char submit_filename[128];
2751         char generated_timestamp[32];
2752         char hold_rm[ROOMNAMELEN];
2753         char actual_rm[ROOMNAMELEN];
2754         char force_room[ROOMNAMELEN];
2755         char content_type[SIZ];                 /* We have to learn this */
2756         char recipient[SIZ];
2757         long newmsgid;
2758         const char *mptr = NULL;
2759         struct ctdluser userbuf;
2760         int a, i;
2761         struct MetaData smi;
2762         FILE *network_fp = NULL;
2763         static int seqnum = 1;
2764         struct CtdlMessage *imsg = NULL;
2765         char *instr = NULL;
2766         size_t instr_alloc = 0;
2767         struct ser_ret smr;
2768         char *hold_R, *hold_D;
2769         char *collected_addresses = NULL;
2770         struct addresses_to_be_filed *aptr = NULL;
2771         char *saved_rfc822_version = NULL;
2772         int qualified_for_journaling = 0;
2773         CitContext *CCC = CC;           /* CachedCitContext - performance boost */
2774         char bounce_to[1024] = "";
2775         size_t tmp = 0;
2776         int rv = 0;
2777
2778         CtdlLogPrintf(CTDL_DEBUG, "CtdlSubmitMsg() called\n");
2779         if (is_valid_message(msg) == 0) return(-1);     /* self check */
2780
2781         /* If this message has no timestamp, we take the liberty of
2782          * giving it one, right now.
2783          */
2784         if (msg->cm_fields['T'] == NULL) {
2785                 snprintf(generated_timestamp, sizeof generated_timestamp, "%ld", (long)time(NULL));
2786                 msg->cm_fields['T'] = strdup(generated_timestamp);
2787         }
2788
2789         /* If this message has no path, we generate one.
2790          */
2791         if (msg->cm_fields['P'] == NULL) {
2792                 if (msg->cm_fields['A'] != NULL) {
2793                         msg->cm_fields['P'] = strdup(msg->cm_fields['A']);
2794                         for (a=0; !IsEmptyStr(&msg->cm_fields['P'][a]); ++a) {
2795                                 if (isspace(msg->cm_fields['P'][a])) {
2796                                         msg->cm_fields['P'][a] = ' ';
2797                                 }
2798                         }
2799                 }
2800                 else {
2801                         msg->cm_fields['P'] = strdup("unknown");
2802                 }
2803         }
2804
2805         if (force == NULL) {
2806                 strcpy(force_room, "");
2807         }
2808         else {
2809                 strcpy(force_room, force);
2810         }
2811
2812         /* Learn about what's inside, because it's what's inside that counts */
2813         if (msg->cm_fields['M'] == NULL) {
2814                 CtdlLogPrintf(CTDL_ERR, "ERROR: attempt to save message with NULL body\n");
2815                 return(-2);
2816         }
2817
2818         switch (msg->cm_format_type) {
2819         case 0:
2820                 strcpy(content_type, "text/x-citadel-variformat");
2821                 break;
2822         case 1:
2823                 strcpy(content_type, "text/plain");
2824                 break;
2825         case 4:
2826                 strcpy(content_type, "text/plain");
2827                 mptr = bmstrcasestr(msg->cm_fields['M'], "Content-type:");
2828                 if (mptr != NULL) {
2829                         char *aptr;
2830                         safestrncpy(content_type, &mptr[13], sizeof content_type);
2831                         striplt(content_type);
2832                         aptr = content_type;
2833                         while (!IsEmptyStr(aptr)) {
2834                                 if ((*aptr == ';')
2835                                     || (*aptr == ' ')
2836                                     || (*aptr == 13)
2837                                     || (*aptr == 10)) {
2838                                         *aptr = 0;
2839                                 }
2840                                 else aptr++;
2841                         }
2842                 }
2843         }
2844
2845         /* Goto the correct room */
2846         CtdlLogPrintf(CTDL_DEBUG, "Selected room %s\n", (recps) ? CCC->room.QRname : SENTITEMS);
2847         strcpy(hold_rm, CCC->room.QRname);
2848         strcpy(actual_rm, CCC->room.QRname);
2849         if (recps != NULL) {
2850                 strcpy(actual_rm, SENTITEMS);
2851         }
2852
2853         /* If the user is a twit, move to the twit room for posting */
2854         if (TWITDETECT) {
2855                 if (CCC->user.axlevel == AxProbU) {
2856                         strcpy(hold_rm, actual_rm);
2857                         strcpy(actual_rm, config.c_twitroom);
2858                         CtdlLogPrintf(CTDL_DEBUG, "Diverting to twit room\n");
2859                 }
2860         }
2861
2862         /* ...or if this message is destined for Aide> then go there. */
2863         if (!IsEmptyStr(force_room)) {
2864                 strcpy(actual_rm, force_room);
2865         }
2866
2867         CtdlLogPrintf(CTDL_DEBUG, "Final selection: %s\n", actual_rm);
2868         if (strcasecmp(actual_rm, CCC->room.QRname)) {
2869                 /* CtdlGetRoom(&CCC->room, actual_rm); */
2870                 CtdlUserGoto(actual_rm, 0, 1, NULL, NULL);
2871         }
2872
2873         /*
2874          * If this message has no O (room) field, generate one.
2875          */
2876         if (msg->cm_fields['O'] == NULL) {
2877                 msg->cm_fields['O'] = strdup(CCC->room.QRname);
2878         }
2879
2880         /* Perform "before save" hooks (aborting if any return nonzero) */
2881         CtdlLogPrintf(CTDL_DEBUG, "Performing before-save hooks\n");
2882         if (PerformMessageHooks(msg, EVT_BEFORESAVE) > 0) return(-3);
2883
2884         /*
2885          * If this message has an Exclusive ID, and the room is replication
2886          * checking enabled, then do replication checks.
2887          */
2888         if (DoesThisRoomNeedEuidIndexing(&CCC->room)) {
2889                 ReplicationChecks(msg);
2890         }
2891
2892         /* Save it to disk */
2893         CtdlLogPrintf(CTDL_DEBUG, "Saving to disk\n");
2894         newmsgid = send_message(msg);
2895         if (newmsgid <= 0L) return(-5);
2896
2897         /* Write a supplemental message info record.  This doesn't have to
2898          * be a critical section because nobody else knows about this message
2899          * yet.
2900          */
2901         CtdlLogPrintf(CTDL_DEBUG, "Creating MetaData record\n");
2902         memset(&smi, 0, sizeof(struct MetaData));
2903         smi.meta_msgnum = newmsgid;
2904         smi.meta_refcount = 0;
2905         safestrncpy(smi.meta_content_type, content_type,
2906                         sizeof smi.meta_content_type);
2907
2908         /*
2909          * Measure how big this message will be when rendered as RFC822.
2910          * We do this for two reasons:
2911          * 1. We need the RFC822 length for the new metadata record, so the
2912          *    POP and IMAP services don't have to calculate message lengths
2913          *    while the user is waiting (multiplied by potentially hundreds
2914          *    or thousands of messages).
2915          * 2. If journaling is enabled, we will need an RFC822 version of the
2916          *    message to attach to the journalized copy.
2917          */
2918         if (CCC->redirect_buffer != NULL) {
2919                 CtdlLogPrintf(CTDL_ALERT, "CCC->redirect_buffer is not NULL during message submission!\n");
2920                 abort();
2921         }
2922         CCC->redirect_buffer = malloc(SIZ);
2923         CCC->redirect_len = 0;
2924         CCC->redirect_alloc = SIZ;
2925         CtdlOutputPreLoadedMsg(msg, MT_RFC822, HEADERS_ALL, 0, 1, QP_EADDR);
2926         smi.meta_rfc822_length = CCC->redirect_len;
2927         saved_rfc822_version = CCC->redirect_buffer;
2928         CCC->redirect_buffer = NULL;
2929         CCC->redirect_len = 0;
2930         CCC->redirect_alloc = 0;
2931
2932         PutMetaData(&smi);
2933
2934         /* Now figure out where to store the pointers */
2935         CtdlLogPrintf(CTDL_DEBUG, "Storing pointers\n");
2936
2937         /* If this is being done by the networker delivering a private
2938          * message, we want to BYPASS saving the sender's copy (because there
2939          * is no local sender; it would otherwise go to the Trashcan).
2940          */
2941         if ((!CCC->internal_pgm) || (recps == NULL)) {
2942                 if (CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 1, msg) != 0) {
2943                         CtdlLogPrintf(CTDL_ERR, "ERROR saving message pointer!\n");
2944                         CtdlSaveMsgPointerInRoom(config.c_aideroom, newmsgid, 0, msg);
2945                 }
2946         }
2947
2948         /* For internet mail, drop a copy in the outbound queue room */
2949         if ((recps != NULL) && (recps->num_internet > 0)) {
2950                 CtdlSaveMsgPointerInRoom(SMTP_SPOOLOUT_ROOM, newmsgid, 0, msg);
2951         }
2952
2953         /* If other rooms are specified, drop them there too. */
2954         if ((recps != NULL) && (recps->num_room > 0))
2955           for (i=0; i<num_tokens(recps->recp_room, '|'); ++i) {
2956                 extract_token(recipient, recps->recp_room, i,
2957                                         '|', sizeof recipient);
2958                 CtdlLogPrintf(CTDL_DEBUG, "Delivering to room <%s>\n", recipient);
2959                 CtdlSaveMsgPointerInRoom(recipient, newmsgid, 0, msg);
2960         }
2961
2962         /* Bump this user's messages posted counter. */
2963         CtdlLogPrintf(CTDL_DEBUG, "Updating user\n");
2964         CtdlGetUserLock(&CCC->user, CCC->curr_user);
2965         CCC->user.posted = CCC->user.posted + 1;
2966         CtdlPutUserLock(&CCC->user);
2967
2968         /* Decide where bounces need to be delivered */
2969         if ((recps != NULL) && (recps->bounce_to != NULL)) {
2970                 safestrncpy(bounce_to, recps->bounce_to, sizeof bounce_to);
2971         }
2972         else if (CCC->logged_in) {
2973                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", CCC->user.fullname, config.c_nodename);
2974         }
2975         else {
2976                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", msg->cm_fields['A'], msg->cm_fields['N']);
2977         }
2978
2979         /* If this is private, local mail, make a copy in the
2980          * recipient's mailbox and bump the reference count.
2981          */
2982         if ((recps != NULL) && (recps->num_local > 0))
2983           for (i=0; i<num_tokens(recps->recp_local, '|'); ++i) {
2984                 extract_token(recipient, recps->recp_local, i,
2985                                         '|', sizeof recipient);
2986                 CtdlLogPrintf(CTDL_DEBUG, "Delivering private local mail to <%s>\n",
2987                         recipient);
2988                 if (CtdlGetUser(&userbuf, recipient) == 0) {
2989                         // Add a flag so the Funambol module knows its mail
2990                         msg->cm_fields['W'] = strdup(recipient);
2991                         CtdlMailboxName(actual_rm, sizeof actual_rm, &userbuf, MAILROOM);
2992                         CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 0, msg);
2993                         CtdlBumpNewMailCounter(userbuf.usernum);
2994                         if (!IsEmptyStr(config.c_funambol_host) || !IsEmptyStr(config.c_pager_program)) {
2995                         /* Generate a instruction message for the Funambol notification
2996                          * server, in the same style as the SMTP queue
2997                          */
2998                            instr_alloc = 1024;
2999                            instr = malloc(instr_alloc);
3000                            snprintf(instr, instr_alloc,
3001                         "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
3002                         "bounceto|%s\n",
3003                         SPOOLMIME, newmsgid, (long)time(NULL),
3004                         bounce_to
3005                         );
3006
3007                            imsg = malloc(sizeof(struct CtdlMessage));
3008                            memset(imsg, 0, sizeof(struct CtdlMessage));
3009                            imsg->cm_magic = CTDLMESSAGE_MAGIC;
3010                            imsg->cm_anon_type = MES_NORMAL;
3011                            imsg->cm_format_type = FMT_RFC822;
3012                            imsg->cm_fields['A'] = strdup("Citadel");
3013                            imsg->cm_fields['J'] = strdup("do not journal");
3014                            imsg->cm_fields['M'] = instr;        /* imsg owns this memory now */
3015                            imsg->cm_fields['W'] = strdup(recipient);
3016                            CtdlSubmitMsg(imsg, NULL, FNBL_QUEUE_ROOM, 0);
3017                            CtdlFreeMessage(imsg);
3018                         }
3019                 }
3020                 else {
3021                         CtdlLogPrintf(CTDL_DEBUG, "No user <%s>\n", recipient);
3022                         CtdlSaveMsgPointerInRoom(config.c_aideroom,
3023                                 newmsgid, 0, msg);
3024                 }
3025         }
3026
3027         /* Perform "after save" hooks */
3028         CtdlLogPrintf(CTDL_DEBUG, "Performing after-save hooks\n");
3029         PerformMessageHooks(msg, EVT_AFTERSAVE);
3030
3031         /* For IGnet mail, we have to save a new copy into the spooler for
3032          * each recipient, with the R and D fields set to the recipient and
3033          * destination-node.  This has two ugly side effects: all other
3034          * recipients end up being unlisted in this recipient's copy of the
3035          * message, and it has to deliver multiple messages to the same
3036          * node.  We'll revisit this again in a year or so when everyone has
3037          * a network spool receiver that can handle the new style messages.
3038          */
3039         if ((recps != NULL) && (recps->num_ignet > 0))
3040           for (i=0; i<num_tokens(recps->recp_ignet, '|'); ++i) {
3041                 extract_token(recipient, recps->recp_ignet, i,
3042                                 '|', sizeof recipient);
3043
3044                 hold_R = msg->cm_fields['R'];
3045                 hold_D = msg->cm_fields['D'];
3046                 msg->cm_fields['R'] = malloc(SIZ);
3047                 msg->cm_fields['D'] = malloc(128);
3048                 extract_token(msg->cm_fields['R'], recipient, 0, '@', SIZ);
3049                 extract_token(msg->cm_fields['D'], recipient, 1, '@', 128);
3050
3051                 serialize_message(&smr, msg);
3052                 if (smr.len > 0) {
3053                         snprintf(submit_filename, sizeof submit_filename,
3054                                          "%s/netmail.%04lx.%04x.%04x",
3055                                          ctdl_netin_dir,
3056                                          (long) getpid(), CCC->cs_pid, ++seqnum);
3057                         network_fp = fopen(submit_filename, "wb+");
3058                         if (network_fp != NULL) {
3059                                 rv = fwrite(smr.ser, smr.len, 1, network_fp);
3060                                 fclose(network_fp);
3061                         }
3062                         free(smr.ser);
3063                 }
3064
3065                 free(msg->cm_fields['R']);
3066                 free(msg->cm_fields['D']);
3067                 msg->cm_fields['R'] = hold_R;
3068                 msg->cm_fields['D'] = hold_D;
3069         }
3070
3071         /* Go back to the room we started from */
3072         CtdlLogPrintf(CTDL_DEBUG, "Returning to original room %s\n", hold_rm);
3073         if (strcasecmp(hold_rm, CCC->room.QRname))
3074                 CtdlUserGoto(hold_rm, 0, 1, NULL, NULL);
3075
3076         /* For internet mail, generate delivery instructions.
3077          * Yes, this is recursive.  Deal with it.  Infinite recursion does
3078          * not happen because the delivery instructions message does not
3079          * contain a recipient.
3080          */
3081         if ((recps != NULL) && (recps->num_internet > 0)) {
3082                 CtdlLogPrintf(CTDL_DEBUG, "Generating delivery instructions\n");
3083                 instr_alloc = 1024;
3084                 instr = malloc(instr_alloc);
3085                 snprintf(instr, instr_alloc,
3086                         "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
3087                         "bounceto|%s\n",
3088                         SPOOLMIME, newmsgid, (long)time(NULL),
3089                         bounce_to
3090                 );
3091
3092                 if (recps->envelope_from != NULL) {
3093                         tmp = strlen(instr);
3094                         snprintf(&instr[tmp], instr_alloc-tmp, "envelope_from|%s\n", recps->envelope_from);
3095                 }
3096
3097                 for (i=0; i<num_tokens(recps->recp_internet, '|'); ++i) {
3098                         tmp = strlen(instr);
3099                         extract_token(recipient, recps->recp_internet, i, '|', sizeof recipient);
3100                         if ((tmp + strlen(recipient) + 32) > instr_alloc) {
3101                                 instr_alloc = instr_alloc * 2;
3102                                 instr = realloc(instr, instr_alloc);
3103                         }
3104                         snprintf(&instr[tmp], instr_alloc - tmp, "remote|%s|0||\n", recipient);
3105                 }
3106
3107                 imsg = malloc(sizeof(struct CtdlMessage));
3108                 memset(imsg, 0, sizeof(struct CtdlMessage));
3109                 imsg->cm_magic = CTDLMESSAGE_MAGIC;
3110                 imsg->cm_anon_type = MES_NORMAL;
3111                 imsg->cm_format_type = FMT_RFC822;
3112                 imsg->cm_fields['A'] = strdup("Citadel");
3113                 imsg->cm_fields['J'] = strdup("do not journal");
3114                 imsg->cm_fields['M'] = instr;   /* imsg owns this memory now */
3115                 CtdlSubmitMsg(imsg, NULL, SMTP_SPOOLOUT_ROOM, QP_EADDR);
3116                 CtdlFreeMessage(imsg);
3117         }
3118
3119         /*
3120          * Any addresses to harvest for someone's address book?
3121          */
3122         if ( (CCC->logged_in) && (recps != NULL) ) {
3123                 collected_addresses = harvest_collected_addresses(msg);
3124         }
3125
3126         if (collected_addresses != NULL) {
3127                 aptr = (struct addresses_to_be_filed *)
3128                         malloc(sizeof(struct addresses_to_be_filed));
3129                 CtdlMailboxName(actual_rm, sizeof actual_rm,
3130                         &CCC->user, USERCONTACTSROOM);
3131                 aptr->roomname = strdup(actual_rm);
3132                 aptr->collected_addresses = collected_addresses;
3133                 begin_critical_section(S_ATBF);
3134                 aptr->next = atbf;
3135                 atbf = aptr;
3136                 end_critical_section(S_ATBF);
3137         }
3138
3139         /*
3140          * Determine whether this message qualifies for journaling.
3141          */
3142         if (msg->cm_fields['J'] != NULL) {
3143                 qualified_for_journaling = 0;
3144         }
3145         else {
3146                 if (recps == NULL) {
3147                         qualified_for_journaling = config.c_journal_pubmsgs;
3148                 }
3149                 else if (recps->num_local + recps->num_ignet + recps->num_internet > 0) {
3150                         qualified_for_journaling = config.c_journal_email;
3151                 }
3152                 else {
3153                         qualified_for_journaling = config.c_journal_pubmsgs;
3154                 }
3155         }
3156
3157         /*
3158          * Do we have to perform journaling?  If so, hand off the saved
3159          * RFC822 version will be handed off to the journaler for background
3160          * submit.  Otherwise, we have to free the memory ourselves.
3161          */
3162         if (saved_rfc822_version != NULL) {
3163                 if (qualified_for_journaling) {
3164                         JournalBackgroundSubmit(msg, saved_rfc822_version, recps);
3165                 }
3166                 else {
3167                         free(saved_rfc822_version);
3168                 }
3169         }
3170
3171         /* Done. */
3172         return(newmsgid);
3173 }
3174
3175
3176
3177 void aide_message (char *text, char *subject)
3178 {
3179         quickie_message("Citadel",NULL,NULL,AIDEROOM,text,FMT_CITADEL,subject);
3180 }
3181
3182
3183 /*
3184  * Convenience function for generating small administrative messages.
3185  */
3186 void quickie_message(const char *from, const char *fromaddr, char *to, char *room, const char *text,
3187                         int format_type, const char *subject)
3188 {
3189         struct CtdlMessage *msg;
3190         struct recptypes *recp = NULL;
3191
3192         msg = malloc(sizeof(struct CtdlMessage));
3193         memset(msg, 0, sizeof(struct CtdlMessage));
3194         msg->cm_magic = CTDLMESSAGE_MAGIC;
3195         msg->cm_anon_type = MES_NORMAL;
3196         msg->cm_format_type = format_type;
3197
3198         if (from != NULL) {
3199                 msg->cm_fields['A'] = strdup(from);
3200         }
3201         else if (fromaddr != NULL) {
3202                 msg->cm_fields['A'] = strdup(fromaddr);
3203                 if (strchr(msg->cm_fields['A'], '@')) {
3204                         *strchr(msg->cm_fields['A'], '@') = 0;
3205                 }
3206         }
3207         else {
3208                 msg->cm_fields['A'] = strdup("Citadel");
3209         }
3210
3211         if (fromaddr != NULL) msg->cm_fields['F'] = strdup(fromaddr);
3212         if (room != NULL) msg->cm_fields['O'] = strdup(room);
3213         msg->cm_fields['N'] = strdup(NODENAME);
3214         if (to != NULL) {
3215                 msg->cm_fields['R'] = strdup(to);
3216                 recp = validate_recipients(to, NULL, 0);
3217         }
3218         if (subject != NULL) {
3219                 msg->cm_fields['U'] = strdup(subject);
3220         }
3221         msg->cm_fields['M'] = strdup(text);
3222
3223         CtdlSubmitMsg(msg, recp, room, 0);
3224         CtdlFreeMessage(msg);
3225         if (recp != NULL) free_recipients(recp);
3226 }
3227
3228
3229
3230 /*
3231  * Back end function used by CtdlMakeMessage() and similar functions
3232  */
3233 StrBuf *CtdlReadMessageBodyBuf(char *terminator,        /* token signalling EOT */
3234                                long tlen,
3235                                size_t maxlen,           /* maximum message length */
3236                                char *exist,             /* if non-null, append to it;
3237                                                            exist is ALWAYS freed  */
3238                                int crlf,                /* CRLF newlines instead of LF */
3239                                int *sock                /* socket handle or 0 for this session's client socket */
3240                         )
3241 {
3242         StrBuf *Message;
3243         StrBuf *LineBuf;
3244         int flushing = 0;
3245         int finished = 0;
3246         int dotdot = 0;
3247
3248         LineBuf = NewStrBufPlain(NULL, SIZ);
3249         if (exist == NULL) {
3250                 Message = NewStrBufPlain(NULL, 4 * SIZ);
3251         }
3252         else {
3253                 Message = NewStrBufPlain(exist, -1);
3254                 free(exist);
3255         }
3256
3257         /* Do we need to change leading ".." to "." for SMTP escaping? */
3258         if ((tlen == 1) && (*terminator == '.')) {
3259                 dotdot = 1;
3260         }
3261
3262         /* read in the lines of message text one by one */
3263         do {
3264                 if (sock != NULL) {
3265                         if ((CtdlSockGetLine(sock, LineBuf) < 0) ||
3266                             (*sock == -1))
3267                                 finished = 1;
3268                 }
3269                 else {
3270                         if (CtdlClientGetLine(LineBuf) < 0) finished = 1;
3271                 }
3272                 if ((StrLength(LineBuf) == tlen) &&
3273                     (!strcmp(ChrPtr(LineBuf), terminator)))
3274                         finished = 1;
3275
3276                 if ( (!flushing) && (!finished) ) {
3277                         if (crlf) {
3278                                 StrBufAppendBufPlain(LineBuf, HKEY("\r\n"), 0);
3279                         }
3280                         else {
3281                                 StrBufAppendBufPlain(LineBuf, HKEY("\n"), 0);
3282                         }
3283
3284                         /* Unescape SMTP-style input of two dots at the beginning of the line */
3285                         if ((dotdot) &&
3286                             (StrLength(LineBuf) == 2) &&
3287                             (!strcmp(ChrPtr(LineBuf), "..")))
3288                         {
3289                                 StrBufCutLeft(LineBuf, 1);
3290                         }
3291
3292                         StrBufAppendBuf(Message, LineBuf, 0);
3293                 }
3294
3295                 /* if we've hit the max msg length, flush the rest */
3296                 if (StrLength(Message) >= maxlen) flushing = 1;
3297
3298         } while (!finished);
3299         FreeStrBuf(&LineBuf);
3300         return Message;
3301 }
3302
3303
3304 /*
3305  * Back end function used by CtdlMakeMessage() and similar functions
3306  */
3307 char *CtdlReadMessageBody(char *terminator,     /* token signalling EOT */
3308                           long tlen,
3309                           size_t maxlen,                /* maximum message length */
3310                           char *exist,          /* if non-null, append to it;
3311                                                    exist is ALWAYS freed  */
3312                           int crlf,             /* CRLF newlines instead of LF */
3313                           int *sock             /* socket handle or 0 for this session's client socket */
3314         )
3315 {
3316         StrBuf *Message;
3317
3318         Message = CtdlReadMessageBodyBuf(terminator,
3319                                          tlen,
3320                                          maxlen,
3321                                          exist,
3322                                          crlf,
3323                                          sock);
3324         if (Message == NULL)
3325                 return NULL;
3326         else
3327                 return SmashStrBuf(&Message);
3328 }
3329
3330
3331 /*
3332  * Build a binary message to be saved on disk.
3333  * (NOTE: if you supply 'preformatted_text', the buffer you give it
3334  * will become part of the message.  This means you are no longer
3335  * responsible for managing that memory -- it will be freed along with
3336  * the rest of the fields when CtdlFreeMessage() is called.)
3337  */
3338
3339 struct CtdlMessage *CtdlMakeMessage(
3340         struct ctdluser *author,        /* author's user structure */
3341         char *recipient,                /* NULL if it's not mail */
3342         char *recp_cc,                  /* NULL if it's not mail */
3343         char *room,                     /* room where it's going */
3344         int type,                       /* see MES_ types in header file */
3345         int format_type,                /* variformat, plain text, MIME... */
3346         char *fake_name,                /* who we're masquerading as */
3347         char *my_email,                 /* which of my email addresses to use (empty is ok) */
3348         char *subject,                  /* Subject (optional) */
3349         char *supplied_euid,            /* ...or NULL if this is irrelevant */
3350         char *preformatted_text,        /* ...or NULL to read text from client */
3351         char *references                /* Thread references */
3352 ) {
3353         char dest_node[256];
3354         char buf[1024];
3355         struct CtdlMessage *msg;
3356
3357         msg = malloc(sizeof(struct CtdlMessage));
3358         memset(msg, 0, sizeof(struct CtdlMessage));
3359         msg->cm_magic = CTDLMESSAGE_MAGIC;
3360         msg->cm_anon_type = type;
3361         msg->cm_format_type = format_type;
3362
3363         /* Don't confuse the poor folks if it's not routed mail. */
3364         strcpy(dest_node, "");
3365
3366         if (recipient != NULL) striplt(recipient);
3367         if (recp_cc != NULL) striplt(recp_cc);
3368
3369         /* Path or Return-Path */
3370         if (my_email == NULL) my_email = "";
3371
3372         if (!IsEmptyStr(my_email)) {
3373                 msg->cm_fields['P'] = strdup(my_email);
3374         }
3375         else {
3376                 snprintf(buf, sizeof buf, "%s", author->fullname);
3377                 msg->cm_fields['P'] = strdup(buf);
3378         }
3379         convert_spaces_to_underscores(msg->cm_fields['P']);
3380
3381         snprintf(buf, sizeof buf, "%ld", (long)time(NULL));     /* timestamp */
3382         msg->cm_fields['T'] = strdup(buf);
3383
3384         if ((fake_name != NULL) && (fake_name[0])) {            /* author */
3385                 msg->cm_fields['A'] = strdup(fake_name);
3386         }
3387         else {
3388                 msg->cm_fields['A'] = strdup(author->fullname);
3389         }
3390
3391         if (CC->room.QRflags & QR_MAILBOX) {            /* room */
3392                 msg->cm_fields['O'] = strdup(&CC->room.QRname[11]);
3393         }
3394         else {
3395                 msg->cm_fields['O'] = strdup(CC->room.QRname);
3396         }
3397
3398         msg->cm_fields['N'] = strdup(NODENAME);         /* nodename */
3399         msg->cm_fields['H'] = strdup(HUMANNODE);                /* hnodename */
3400
3401         if ((recipient != NULL) && (recipient[0] != 0)) {
3402                 msg->cm_fields['R'] = strdup(recipient);
3403         }
3404         if ((recp_cc != NULL) && (recp_cc[0] != 0)) {
3405                 msg->cm_fields['Y'] = strdup(recp_cc);
3406         }
3407         if (dest_node[0] != 0) {
3408                 msg->cm_fields['D'] = strdup(dest_node);
3409         }
3410
3411         if (!IsEmptyStr(my_email)) {
3412                 msg->cm_fields['F'] = strdup(my_email);
3413         }
3414         else if ( (author == &CC->user) && (!IsEmptyStr(CC->cs_inet_email)) ) {
3415                 msg->cm_fields['F'] = strdup(CC->cs_inet_email);
3416         }
3417
3418         if (subject != NULL) {
3419                 long length;
3420                 striplt(subject);
3421                 length = strlen(subject);
3422                 if (length > 0) {
3423                         long i;
3424                         long IsAscii;
3425                         IsAscii = -1;
3426                         i = 0;
3427                         while ((subject[i] != '\0') &&
3428                                (IsAscii = isascii(subject[i]) != 0 ))
3429                                 i++;
3430                         if (IsAscii != 0)
3431                                 msg->cm_fields['U'] = strdup(subject);
3432                         else /* ok, we've got utf8 in the string. */
3433                         {
3434                                 msg->cm_fields['U'] = rfc2047encode(subject, length);
3435                         }
3436
3437                 }
3438         }
3439
3440         if (supplied_euid != NULL) {
3441                 msg->cm_fields['E'] = strdup(supplied_euid);
3442         }
3443
3444         if (references != NULL) {
3445                 if (!IsEmptyStr(references)) {
3446                         msg->cm_fields['W'] = strdup(references);
3447                 }
3448         }
3449
3450         if (preformatted_text != NULL) {
3451                 msg->cm_fields['M'] = preformatted_text;
3452         }
3453         else {
3454                 msg->cm_fields['M'] = CtdlReadMessageBody(HKEY("000"), config.c_maxmsglen, NULL, 0, 0);
3455         }
3456
3457         return(msg);
3458 }
3459
3460
3461 /*
3462  * Check to see whether we have permission to post a message in the current
3463  * room.  Returns a *CITADEL ERROR CODE* and puts a message in errmsgbuf, or
3464  * returns 0 on success.
3465  */
3466 int CtdlDoIHavePermissionToPostInThisRoom(char *errmsgbuf,
3467                                           size_t n,
3468                                           const char* RemoteIdentifier,
3469                                           int PostPublic) {
3470         int ra;
3471
3472         if (!(CC->logged_in) &&
3473             (PostPublic == POST_LOGGED_IN)) {
3474                 snprintf(errmsgbuf, n, "Not logged in.");
3475                 return (ERROR + NOT_LOGGED_IN);
3476         }
3477         else if (PostPublic == CHECK_EXISTANCE) {
3478                 return (0); // We're Evaling whether a recipient exists
3479         }
3480         else if (!(CC->logged_in)) {
3481
3482                 if ((CC->room.QRflags & QR_READONLY)) {
3483                         snprintf(errmsgbuf, n, "Not logged in.");
3484                         return (ERROR + NOT_LOGGED_IN);
3485                 }
3486                 if (CC->room.QRflags2 & QR2_MODERATED) {
3487                         snprintf(errmsgbuf, n, "Not logged in Moderation feature not yet implemented!");
3488                         return (ERROR + NOT_LOGGED_IN);
3489                 }
3490                 if ((PostPublic!=POST_LMTP) &&(CC->room.QRflags2 & QR2_SMTP_PUBLIC) == 0) {
3491                         SpoolControl *sc;
3492                         char filename[SIZ];
3493                         int found;
3494
3495                         if (RemoteIdentifier == NULL)
3496                         {
3497                                 snprintf(errmsgbuf, n, "Need sender to permit access.");
3498                                 return (ERROR + USERNAME_REQUIRED);
3499                         }
3500
3501                         assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
3502                         begin_critical_section(S_NETCONFIGS);
3503                         if (!read_spoolcontrol_file(&sc, filename))
3504                         {
3505                                 end_critical_section(S_NETCONFIGS);
3506                                 snprintf(errmsgbuf, n,
3507                                         "This mailing list only accepts posts from subscribers.");
3508                                 return (ERROR + NO_SUCH_USER);
3509                         }
3510                         end_critical_section(S_NETCONFIGS);
3511                         found = is_recipient (sc, RemoteIdentifier);
3512                         free_spoolcontrol_struct(&sc);
3513                         if (found) {
3514                                 return (0);
3515                         }
3516                         else {
3517                                 snprintf(errmsgbuf, n,
3518                                         "This mailing list only accepts posts from subscribers.");
3519                                 return (ERROR + NO_SUCH_USER);
3520                         }
3521                 }
3522                 return (0);
3523
3524         }
3525
3526         if ((CC->user.axlevel < AxProbU)
3527             && ((CC->room.QRflags & QR_MAILBOX) == 0)) {
3528                 snprintf(errmsgbuf, n, "Need to be validated to enter "
3529                                 "(except in %s> to sysop)", MAILROOM);
3530                 return (ERROR + HIGHER_ACCESS_REQUIRED);
3531         }
3532
3533         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
3534         if (!(ra & UA_POSTALLOWED)) {
3535                 snprintf(errmsgbuf, n, "Higher access is required to post in this room.");
3536                 return (ERROR + HIGHER_ACCESS_REQUIRED);
3537         }
3538
3539         strcpy(errmsgbuf, "Ok");
3540         return(0);
3541 }
3542
3543
3544 /*
3545  * Check to see if the specified user has Internet mail permission
3546  * (returns nonzero if permission is granted)
3547  */
3548 int CtdlCheckInternetMailPermission(struct ctdluser *who) {
3549
3550         /* Do not allow twits to send Internet mail */
3551         if (who->axlevel <= AxProbU) return(0);
3552
3553         /* Globally enabled? */
3554         if (config.c_restrict == 0) return(1);
3555
3556         /* User flagged ok? */
3557         if (who->flags & US_INTERNET) return(2);
3558
3559         /* Aide level access? */
3560         if (who->axlevel >= AxAideU) return(3);
3561
3562         /* No mail for you! */
3563         return(0);
3564 }
3565
3566
3567 /*
3568  * Validate recipients, count delivery types and errors, and handle aliasing
3569  * FIXME check for dupes!!!!!
3570  *
3571  * Returns 0 if all addresses are ok, ret->num_error = -1 if no addresses
3572  * were specified, or the number of addresses found invalid.
3573  *
3574  * Caller needs to free the result using free_recipients()
3575  */
3576 struct recptypes *validate_recipients(const char *supplied_recipients,
3577                                       const char *RemoteIdentifier,
3578                                       int Flags) {
3579         struct recptypes *ret;
3580         char *recipients = NULL;
3581         char this_recp[256];
3582         char this_recp_cooked[256];
3583         char append[SIZ];
3584         int num_recps = 0;
3585         int i, j;
3586         int mailtype;
3587         int invalid;
3588         struct ctdluser tempUS;
3589         struct ctdlroom tempQR;
3590         struct ctdlroom tempQR2;
3591         int err = 0;
3592         char errmsg[SIZ];
3593         int in_quotes = 0;
3594
3595         /* Initialize */
3596         ret = (struct recptypes *) malloc(sizeof(struct recptypes));
3597         if (ret == NULL) return(NULL);
3598
3599         /* Set all strings to null and numeric values to zero */
3600         memset(ret, 0, sizeof(struct recptypes));
3601
3602         if (supplied_recipients == NULL) {
3603                 recipients = strdup("");
3604         }
3605         else {
3606                 recipients = strdup(supplied_recipients);
3607         }
3608
3609         /* Allocate some memory.  Yes, this allocates 500% more memory than we will
3610          * actually need, but it's healthier for the heap than doing lots of tiny
3611          * realloc() calls instead.
3612          */
3613
3614         ret->errormsg = malloc(strlen(recipients) + 1024);
3615         ret->recp_local = malloc(strlen(recipients) + 1024);
3616         ret->recp_internet = malloc(strlen(recipients) + 1024);
3617         ret->recp_ignet = malloc(strlen(recipients) + 1024);
3618         ret->recp_room = malloc(strlen(recipients) + 1024);
3619         ret->display_recp = malloc(strlen(recipients) + 1024);
3620
3621         ret->errormsg[0] = 0;
3622         ret->recp_local[0] = 0;
3623         ret->recp_internet[0] = 0;
3624         ret->recp_ignet[0] = 0;
3625         ret->recp_room[0] = 0;
3626         ret->display_recp[0] = 0;
3627
3628         ret->recptypes_magic = RECPTYPES_MAGIC;
3629
3630         /* Change all valid separator characters to commas */
3631         for (i=0; !IsEmptyStr(&recipients[i]); ++i) {
3632                 if ((recipients[i] == ';') || (recipients[i] == '|')) {
3633                         recipients[i] = ',';
3634                 }
3635         }
3636
3637         /* Now start extracting recipients... */
3638
3639         while (!IsEmptyStr(recipients)) {
3640
3641                 for (i=0; i<=strlen(recipients); ++i) {
3642                         if (recipients[i] == '\"') in_quotes = 1 - in_quotes;
3643                         if ( ( (recipients[i] == ',') && (!in_quotes) ) || (recipients[i] == 0) ) {
3644                                 safestrncpy(this_recp, recipients, i+1);
3645                                 this_recp[i] = 0;
3646                                 if (recipients[i] == ',') {
3647                                         strcpy(recipients, &recipients[i+1]);
3648                                 }
3649                                 else {
3650                                         strcpy(recipients, "");
3651                                 }
3652                                 break;
3653                         }
3654                 }
3655
3656                 striplt(this_recp);
3657                 if (IsEmptyStr(this_recp))
3658                         break;
3659                 CtdlLogPrintf(CTDL_DEBUG, "Evaluating recipient #%d: %s\n", num_recps, this_recp);
3660                 ++num_recps;
3661                 mailtype = alias(this_recp);
3662                 mailtype = alias(this_recp);
3663                 mailtype = alias(this_recp);
3664                 j = 0;
3665                 for (j=0; !IsEmptyStr(&this_recp[j]); ++j) {
3666                         if (this_recp[j]=='_') {
3667                                 this_recp_cooked[j] = ' ';
3668                         }
3669                         else {
3670                                 this_recp_cooked[j] = this_recp[j];
3671                         }
3672                 }
3673                 this_recp_cooked[j] = '\0';
3674                 invalid = 0;
3675                 errmsg[0] = 0;
3676                 switch(mailtype) {
3677                         case MES_LOCAL:
3678                                 if (!strcasecmp(this_recp, "sysop")) {
3679                                         ++ret->num_room;
3680                                         strcpy(this_recp, config.c_aideroom);
3681                                         if (!IsEmptyStr(ret->recp_room)) {
3682                                                 strcat(ret->recp_room, "|");
3683                                         }
3684                                         strcat(ret->recp_room, this_recp);
3685                                 }
3686                                 else if ( (!strncasecmp(this_recp, "room_", 5))
3687                                       && (!CtdlGetRoom(&tempQR, &this_recp_cooked[5])) ) {
3688
3689                                         /* Save room so we can restore it later */
3690                                         tempQR2 = CC->room;
3691                                         CC->room = tempQR;
3692
3693                                         /* Check permissions to send mail to this room */
3694                                         err = CtdlDoIHavePermissionToPostInThisRoom(errmsg,
3695                                                                                     sizeof errmsg,
3696                                                                                     RemoteIdentifier,
3697                                                                                     Flags
3698                                         );
3699                                         if (err)
3700                                         {
3701                                                 ++ret->num_error;
3702                                                 invalid = 1;
3703                                         }
3704                                         else {
3705                                                 ++ret->num_room;
3706                                                 if (!IsEmptyStr(ret->recp_room)) {
3707                                                         strcat(ret->recp_room, "|");
3708                                                 }
3709                                                 strcat(ret->recp_room, &this_recp_cooked[5]);
3710                                         }
3711
3712                                         /* Restore room in case something needs it */
3713                                         CC->room = tempQR2;
3714
3715                                 }
3716                                 else if (CtdlGetUser(&tempUS, this_recp) == 0) {
3717                                         ++ret->num_local;
3718                                         strcpy(this_recp, tempUS.fullname);
3719                                         if (!IsEmptyStr(ret->recp_local)) {
3720                                                 strcat(ret->recp_local, "|");
3721                                         }
3722                                         strcat(ret->recp_local, this_recp);
3723                                 }
3724                                 else if (CtdlGetUser(&tempUS, this_recp_cooked) == 0) {
3725                                         ++ret->num_local;
3726                                         strcpy(this_recp, tempUS.fullname);
3727                                         if (!IsEmptyStr(ret->recp_local)) {
3728                                                 strcat(ret->recp_local, "|");
3729                                         }
3730                                         strcat(ret->recp_local, this_recp);
3731                                 }
3732                                 else {
3733                                         ++ret->num_error;
3734                                         invalid = 1;
3735                                 }
3736                                 break;
3737                         case MES_INTERNET:
3738                                 /* Yes, you're reading this correctly: if the target
3739                                  * domain points back to the local system or an attached
3740                                  * Citadel directory, the address is invalid.  That's
3741                                  * because if the address were valid, we would have
3742                                  * already translated it to a local address by now.
3743                                  */
3744                                 if (IsDirectory(this_recp, 0)) {
3745                                         ++ret->num_error;
3746                                         invalid = 1;
3747                                 }
3748                                 else {
3749                                         ++ret->num_internet;
3750                                         if (!IsEmptyStr(ret->recp_internet)) {
3751                                                 strcat(ret->recp_internet, "|");
3752                                         }
3753                                         strcat(ret->recp_internet, this_recp);
3754                                 }
3755                                 break;
3756                         case MES_IGNET:
3757                                 ++ret->num_ignet;
3758                                 if (!IsEmptyStr(ret->recp_ignet)) {
3759                                         strcat(ret->recp_ignet, "|");
3760                                 }
3761                                 strcat(ret->recp_ignet, this_recp);
3762                                 break;
3763                         case MES_ERROR:
3764                                 ++ret->num_error;
3765                                 invalid = 1;
3766                                 break;
3767                 }
3768                 if (invalid) {
3769                         if (IsEmptyStr(errmsg)) {
3770                                 snprintf(append, sizeof append, "Invalid recipient: %s", this_recp);
3771                         }
3772                         else {
3773                                 snprintf(append, sizeof append, "%s", errmsg);
3774                         }
3775                         if ( (strlen(ret->errormsg) + strlen(append) + 3) < SIZ) {
3776                                 if (!IsEmptyStr(ret->errormsg)) {
3777                                         strcat(ret->errormsg, "; ");
3778                                 }
3779                                 strcat(ret->errormsg, append);
3780                         }
3781                 }
3782                 else {
3783                         if (IsEmptyStr(ret->display_recp)) {
3784                                 strcpy(append, this_recp);
3785                         }
3786                         else {
3787                                 snprintf(append, sizeof append, ", %s", this_recp);
3788                         }
3789                         if ( (strlen(ret->display_recp)+strlen(append)) < SIZ) {
3790                                 strcat(ret->display_recp, append);
3791                         }
3792                 }
3793         }
3794
3795         if ((ret->num_local + ret->num_internet + ret->num_ignet +
3796            ret->num_room + ret->num_error) == 0) {
3797                 ret->num_error = (-1);
3798                 strcpy(ret->errormsg, "No recipients specified.");
3799         }
3800
3801         CtdlLogPrintf(CTDL_DEBUG, "validate_recipients()\n");
3802         CtdlLogPrintf(CTDL_DEBUG, " local: %d <%s>\n", ret->num_local, ret->recp_local);
3803         CtdlLogPrintf(CTDL_DEBUG, "  room: %d <%s>\n", ret->num_room, ret->recp_room);
3804         CtdlLogPrintf(CTDL_DEBUG, "  inet: %d <%s>\n", ret->num_internet, ret->recp_internet);
3805         CtdlLogPrintf(CTDL_DEBUG, " ignet: %d <%s>\n", ret->num_ignet, ret->recp_ignet);
3806         CtdlLogPrintf(CTDL_DEBUG, " error: %d <%s>\n", ret->num_error, ret->errormsg);
3807
3808         free(recipients);
3809         return(ret);
3810 }
3811
3812
3813 /*
3814  * Destructor for struct recptypes
3815  */
3816 void free_recipients(struct recptypes *valid) {
3817
3818         if (valid == NULL) {
3819                 return;
3820         }
3821
3822         if (valid->recptypes_magic != RECPTYPES_MAGIC) {
3823                 CtdlLogPrintf(CTDL_EMERG, "Attempt to call free_recipients() on some other data type!\n");
3824                 abort();
3825         }
3826
3827         if (valid->errormsg != NULL)            free(valid->errormsg);
3828         if (valid->recp_local != NULL)          free(valid->recp_local);
3829         if (valid->recp_internet != NULL)       free(valid->recp_internet);
3830         if (valid->recp_ignet != NULL)          free(valid->recp_ignet);
3831         if (valid->recp_room != NULL)           free(valid->recp_room);
3832         if (valid->display_recp != NULL)        free(valid->display_recp);
3833         if (valid->bounce_to != NULL)           free(valid->bounce_to);
3834         if (valid->envelope_from != NULL)       free(valid->envelope_from);
3835         free(valid);
3836 }
3837
3838
3839
3840 /*
3841  * message entry  -  mode 0 (normal)
3842  */
3843 void cmd_ent0(char *entargs)
3844 {
3845         int post = 0;
3846         char recp[SIZ];
3847         char cc[SIZ];
3848         char bcc[SIZ];
3849         char supplied_euid[128];
3850         int anon_flag = 0;
3851         int format_type = 0;
3852         char newusername[256];
3853         char newuseremail[256];
3854         struct CtdlMessage *msg;
3855         int anonymous = 0;
3856         char errmsg[SIZ];
3857         int err = 0;
3858         struct recptypes *valid = NULL;
3859         struct recptypes *valid_to = NULL;
3860         struct recptypes *valid_cc = NULL;
3861         struct recptypes *valid_bcc = NULL;
3862         char subject[SIZ];
3863         int subject_required = 0;
3864         int do_confirm = 0;
3865         long msgnum;
3866         int i, j;
3867         char buf[256];
3868         int newuseremail_ok = 0;
3869         char references[SIZ];
3870         char *ptr;
3871
3872         unbuffer_output();
3873
3874         post = extract_int(entargs, 0);
3875         extract_token(recp, entargs, 1, '|', sizeof recp);
3876         anon_flag = extract_int(entargs, 2);
3877         format_type = extract_int(entargs, 3);
3878         extract_token(subject, entargs, 4, '|', sizeof subject);
3879         extract_token(newusername, entargs, 5, '|', sizeof newusername);
3880         do_confirm = extract_int(entargs, 6);
3881         extract_token(cc, entargs, 7, '|', sizeof cc);
3882         extract_token(bcc, entargs, 8, '|', sizeof bcc);
3883         switch(CC->room.QRdefaultview) {
3884                 case VIEW_NOTES:
3885                 case VIEW_WIKI:
3886                         extract_token(supplied_euid, entargs, 9, '|', sizeof supplied_euid);
3887                         break;
3888                 default:
3889                         supplied_euid[0] = 0;
3890                         break;
3891         }
3892         extract_token(newuseremail, entargs, 10, '|', sizeof newuseremail);
3893         extract_token(references, entargs, 11, '|', sizeof references);
3894         for (ptr=references; *ptr != 0; ++ptr) {
3895                 if (*ptr == '!') *ptr = '|';
3896         }
3897
3898         /* first check to make sure the request is valid. */
3899
3900         err = CtdlDoIHavePermissionToPostInThisRoom(errmsg, sizeof errmsg, NULL, POST_LOGGED_IN);
3901         if (err)
3902         {
3903                 cprintf("%d %s\n", err, errmsg);
3904                 return;
3905         }
3906
3907         /* Check some other permission type things. */
3908
3909         if (IsEmptyStr(newusername)) {
3910                 strcpy(newusername, CC->user.fullname);
3911         }
3912         if (  (CC->user.axlevel < AxAideU)
3913            && (strcasecmp(newusername, CC->user.fullname))
3914            && (strcasecmp(newusername, CC->cs_inet_fn))
3915         ) {
3916                 cprintf("%d You don't have permission to author messages as '%s'.\n",
3917                         ERROR + HIGHER_ACCESS_REQUIRED,
3918                         newusername
3919                 );
3920                 return;
3921         }
3922
3923
3924         if (IsEmptyStr(newuseremail)) {
3925                 newuseremail_ok = 1;
3926         }
3927
3928         if (!IsEmptyStr(newuseremail)) {
3929                 if (!strcasecmp(newuseremail, CC->cs_inet_email)) {
3930                         newuseremail_ok = 1;
3931                 }
3932                 else if (!IsEmptyStr(CC->cs_inet_other_emails)) {
3933                         j = num_tokens(CC->cs_inet_other_emails, '|');
3934                         for (i=0; i<j; ++i) {
3935                                 extract_token(buf, CC->cs_inet_other_emails, i, '|', sizeof buf);
3936                                 if (!strcasecmp(newuseremail, buf)) {
3937                                         newuseremail_ok = 1;
3938                                 }
3939                         }
3940                 }
3941         }
3942
3943         if (!newuseremail_ok) {
3944                 cprintf("%d You don't have permission to author messages as '%s'.\n",
3945                         ERROR + HIGHER_ACCESS_REQUIRED,
3946                         newuseremail
3947                 );
3948                 return;
3949         }
3950
3951         CC->cs_flags |= CS_POSTING;
3952
3953         /* In mailbox rooms we have to behave a little differently --
3954          * make sure the user has specified at least one recipient.  Then
3955          * validate the recipient(s).  We do this for the Mail> room, as
3956          * well as any room which has the "Mailbox" view set.
3957          */
3958
3959         if (  ( (CC->room.QRflags & QR_MAILBOX) && (!strcasecmp(&CC->room.QRname[11], MAILROOM)) )
3960            || ( (CC->room.QRflags & QR_MAILBOX) && (CC->curr_view == VIEW_MAILBOX) )
3961         ) {
3962                 if (CC->user.axlevel < AxProbU) {
3963                         strcpy(recp, "sysop");
3964                         strcpy(cc, "");
3965                         strcpy(bcc, "");
3966                 }
3967
3968                 valid_to = validate_recipients(recp, NULL, 0);
3969                 if (valid_to->num_error > 0) {
3970                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_to->errormsg);
3971                         free_recipients(valid_to);
3972                         return;
3973                 }
3974
3975                 valid_cc = validate_recipients(cc, NULL, 0);
3976                 if (valid_cc->num_error > 0) {
3977                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_cc->errormsg);
3978                         free_recipients(valid_to);
3979                         free_recipients(valid_cc);
3980                         return;
3981                 }
3982
3983                 valid_bcc = validate_recipients(bcc, NULL, 0);
3984                 if (valid_bcc->num_error > 0) {
3985                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_bcc->errormsg);
3986                         free_recipients(valid_to);
3987                         free_recipients(valid_cc);
3988                         free_recipients(valid_bcc);
3989                         return;
3990                 }
3991
3992                 /* Recipient required, but none were specified */
3993                 if ( (valid_to->num_error < 0) && (valid_cc->num_error < 0) && (valid_bcc->num_error < 0) ) {
3994                         free_recipients(valid_to);
3995                         free_recipients(valid_cc);
3996                         free_recipients(valid_bcc);
3997                         cprintf("%d At least one recipient is required.\n", ERROR + NO_SUCH_USER);
3998                         return;
3999                 }
4000
4001                 if (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0) {
4002                         if (CtdlCheckInternetMailPermission(&CC->user)==0) {
4003                                 cprintf("%d You do not have permission "
4004                                         "to send Internet mail.\n",
4005                                         ERROR + HIGHER_ACCESS_REQUIRED);
4006                                 free_recipients(valid_to);
4007                                 free_recipients(valid_cc);
4008                                 free_recipients(valid_bcc);
4009                                 return;
4010                         }
4011                 }
4012
4013                 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)
4014                    && (CC->user.axlevel < AxNetU) ) {
4015                         cprintf("%d Higher access required for network mail.\n",
4016                                 ERROR + HIGHER_ACCESS_REQUIRED);
4017                         free_recipients(valid_to);
4018                         free_recipients(valid_cc);
4019                         free_recipients(valid_bcc);
4020                         return;
4021                 }
4022
4023                 if ((RESTRICT_INTERNET == 1)
4024                     && (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0)
4025                     && ((CC->user.flags & US_INTERNET) == 0)
4026                     && (!CC->internal_pgm)) {
4027                         cprintf("%d You don't have access to Internet mail.\n",
4028                                 ERROR + HIGHER_ACCESS_REQUIRED);
4029                         free_recipients(valid_to);
4030                         free_recipients(valid_cc);
4031                         free_recipients(valid_bcc);
4032                         return;
4033                 }
4034
4035         }
4036
4037         /* Is this a room which has anonymous-only or anonymous-option? */
4038         anonymous = MES_NORMAL;
4039         if (CC->room.QRflags & QR_ANONONLY) {
4040                 anonymous = MES_ANONONLY;
4041         }
4042         if (CC->room.QRflags & QR_ANONOPT) {
4043                 if (anon_flag == 1) {   /* only if the user requested it */
4044                         anonymous = MES_ANONOPT;
4045                 }
4046         }
4047
4048         if ((CC->room.QRflags & QR_MAILBOX) == 0) {
4049                 recp[0] = 0;
4050         }
4051
4052         /* Recommend to the client that the use of a message subject is
4053          * strongly recommended in this room, if either the SUBJECTREQ flag
4054          * is set, or if there is one or more Internet email recipients.
4055          */
4056         if (CC->room.QRflags2 & QR2_SUBJECTREQ) subject_required = 1;
4057         if ((valid_to)  && (valid_to->num_internet > 0))        subject_required = 1;
4058         if ((valid_cc)  && (valid_cc->num_internet > 0))        subject_required = 1;
4059         if ((valid_bcc) && (valid_bcc->num_internet > 0))       subject_required = 1;
4060
4061         /* If we're only checking the validity of the request, return
4062          * success without creating the message.
4063          */
4064         if (post == 0) {
4065                 cprintf("%d %s|%d\n", CIT_OK,
4066                         ((valid_to != NULL) ? valid_to->display_recp : ""),
4067                         subject_required);
4068                 free_recipients(valid_to);
4069                 free_recipients(valid_cc);
4070                 free_recipients(valid_bcc);
4071                 return;
4072         }
4073
4074         /* We don't need these anymore because we'll do it differently below */
4075         free_recipients(valid_to);
4076         free_recipients(valid_cc);
4077         free_recipients(valid_bcc);
4078
4079         /* Read in the message from the client. */
4080         if (do_confirm) {
4081                 cprintf("%d send message\n", START_CHAT_MODE);
4082         } else {
4083                 cprintf("%d send message\n", SEND_LISTING);
4084         }
4085
4086         msg = CtdlMakeMessage(&CC->user, recp, cc,
4087                 CC->room.QRname, anonymous, format_type,
4088                 newusername, newuseremail, subject,
4089                 ((!IsEmptyStr(supplied_euid)) ? supplied_euid : NULL),
4090                 NULL, references);
4091
4092         /* Put together one big recipients struct containing to/cc/bcc all in
4093          * one.  This is for the envelope.
4094          */
4095         char *all_recps = malloc(SIZ * 3);
4096         strcpy(all_recps, recp);
4097         if (!IsEmptyStr(cc)) {
4098                 if (!IsEmptyStr(all_recps)) {
4099                         strcat(all_recps, ",");
4100                 }
4101                 strcat(all_recps, cc);
4102         }
4103         if (!IsEmptyStr(bcc)) {
4104                 if (!IsEmptyStr(all_recps)) {
4105                         strcat(all_recps, ",");
4106                 }
4107                 strcat(all_recps, bcc);
4108         }
4109         if (!IsEmptyStr(all_recps)) {
4110                 valid = validate_recipients(all_recps, NULL, 0);
4111         }
4112         else {
4113                 valid = NULL;
4114         }
4115         free(all_recps);
4116
4117         if (msg != NULL) {
4118                 msgnum = CtdlSubmitMsg(msg, valid, "", QP_EADDR);
4119
4120                 if (do_confirm) {
4121                         cprintf("%ld\n", msgnum);
4122                         if (msgnum >= 0L) {
4123                                 cprintf("Message accepted.\n");
4124                         }
4125                         else {
4126                                 cprintf("Internal error.\n");
4127                         }
4128                         if (msg->cm_fields['E'] != NULL) {
4129                                 cprintf("%s\n", msg->cm_fields['E']);
4130                         } else {
4131                                 cprintf("\n");
4132                         }
4133                         cprintf("000\n");
4134                 }
4135
4136                 CtdlFreeMessage(msg);
4137         }
4138         if (valid != NULL) {
4139                 free_recipients(valid);
4140         }
4141         return;
4142 }
4143
4144
4145
4146 /*
4147  * API function to delete messages which match a set of criteria
4148  * (returns the actual number of messages deleted)
4149  */
4150 int CtdlDeleteMessages(char *room_name,         /* which room */
4151                         long *dmsgnums,         /* array of msg numbers to be deleted */
4152                         int num_dmsgnums,       /* number of msgs to be deleted, or 0 for "any" */
4153                         char *content_type      /* or "" for any.  regular expressions expected. */
4154 )
4155 {
4156         struct ctdlroom qrbuf;
4157         struct cdbdata *cdbfr;
4158         long *msglist = NULL;
4159         long *dellist = NULL;
4160         int num_msgs = 0;
4161         int i, j;
4162         int num_deleted = 0;
4163         int delete_this;
4164         struct MetaData smi;
4165         regex_t re;
4166         regmatch_t pm;
4167         int need_to_free_re = 0;
4168
4169         if (content_type) if (!IsEmptyStr(content_type)) {
4170                 regcomp(&re, content_type, 0);
4171                 need_to_free_re = 1;
4172         }
4173         CtdlLogPrintf(CTDL_DEBUG, "CtdlDeleteMessages(%s, %d msgs, %s)\n",
4174                 room_name, num_dmsgnums, content_type);
4175
4176         /* get room record, obtaining a lock... */
4177         if (CtdlGetRoomLock(&qrbuf, room_name) != 0) {
4178                 CtdlLogPrintf(CTDL_ERR, "CtdlDeleteMessages(): Room <%s> not found\n",
4179                         room_name);
4180                 if (need_to_free_re) regfree(&re);
4181                 return (0);     /* room not found */
4182         }
4183         cdbfr = cdb_fetch(CDB_MSGLISTS, &qrbuf.QRnumber, sizeof(long));
4184
4185         if (cdbfr != NULL) {
4186                 dellist = malloc(cdbfr->len);
4187                 msglist = (long *) cdbfr->ptr;
4188                 cdbfr->ptr = NULL;      /* CtdlDeleteMessages() now owns this memory */
4189                 num_msgs = cdbfr->len / sizeof(long);
4190                 cdb_free(cdbfr);
4191         }
4192         if (num_msgs > 0) {
4193                 for (i = 0; i < num_msgs; ++i) {
4194                         delete_this = 0x00;
4195
4196                         /* Set/clear a bit for each criterion */
4197
4198                         /* 0 messages in the list or a null list means that we are
4199                          * interested in deleting any messages which meet the other criteria.
4200                          */
4201                         if ((num_dmsgnums == 0) || (dmsgnums == NULL)) {
4202                                 delete_this |= 0x01;
4203                         }
4204                         else {
4205                                 for (j=0; j<num_dmsgnums; ++j) {
4206                                         if (msglist[i] == dmsgnums[j]) {
4207                                                 delete_this |= 0x01;
4208                                         }
4209                                 }
4210                         }
4211
4212                         if (IsEmptyStr(content_type)) {
4213                                 delete_this |= 0x02;
4214                         } else {
4215                                 GetMetaData(&smi, msglist[i]);
4216                                 if (regexec(&re, smi.meta_content_type, 1, &pm, 0) == 0) {
4217                                         delete_this |= 0x02;
4218                                 }
4219                         }
4220
4221                         /* Delete message only if all bits are set */
4222                         if (delete_this == 0x03) {
4223                                 dellist[num_deleted++] = msglist[i];
4224                                 msglist[i] = 0L;
4225                         }
4226                 }
4227
4228                 num_msgs = sort_msglist(msglist, num_msgs);
4229                 cdb_store(CDB_MSGLISTS, &qrbuf.QRnumber, (int)sizeof(long),
4230                           msglist, (int)(num_msgs * sizeof(long)));
4231
4232                 if (num_msgs > 0)
4233                         qrbuf.QRhighest = msglist[num_msgs - 1];
4234                 else
4235                         qrbuf.QRhighest = 0;
4236         }
4237         CtdlPutRoomLock(&qrbuf);
4238
4239         /* Go through the messages we pulled out of the index, and decrement
4240          * their reference counts by 1.  If this is the only room the message
4241          * was in, the reference count will reach zero and the message will
4242          * automatically be deleted from the database.  We do this in a
4243          * separate pass because there might be plug-in hooks getting called,
4244          * and we don't want that happening during an S_ROOMS critical
4245          * section.
4246          */
4247         if (num_deleted) for (i=0; i<num_deleted; ++i) {
4248                 PerformDeleteHooks(qrbuf.QRname, dellist[i]);
4249                 AdjRefCount(dellist[i], -1);
4250         }
4251
4252         /* Now free the memory we used, and go away. */
4253         if (msglist != NULL) free(msglist);
4254         if (dellist != NULL) free(dellist);
4255         CtdlLogPrintf(CTDL_DEBUG, "%d message(s) deleted.\n", num_deleted);
4256         if (need_to_free_re) regfree(&re);
4257         return (num_deleted);
4258 }
4259
4260
4261
4262 /*
4263  * Check whether the current user has permission to delete messages from
4264  * the current room (returns 1 for yes, 0 for no)
4265  */
4266 int CtdlDoIHavePermissionToDeleteMessagesFromThisRoom(void) {
4267         int ra;
4268         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
4269         if (ra & UA_DELETEALLOWED) return(1);
4270         return(0);
4271 }
4272
4273
4274
4275
4276 /*
4277  * Delete message from current room
4278  */
4279 void cmd_dele(char *args)
4280 {
4281         int num_deleted;
4282         int i;
4283         char msgset[SIZ];
4284         char msgtok[32];
4285         long *msgs;
4286         int num_msgs = 0;
4287
4288         extract_token(msgset, args, 0, '|', sizeof msgset);
4289         num_msgs = num_tokens(msgset, ',');
4290         if (num_msgs < 1) {
4291                 cprintf("%d Nothing to do.\n", CIT_OK);
4292                 return;
4293         }
4294
4295         if (CtdlDoIHavePermissionToDeleteMessagesFromThisRoom() == 0) {
4296                 cprintf("%d Higher access required.\n",
4297                         ERROR + HIGHER_ACCESS_REQUIRED);
4298                 return;
4299         }
4300
4301         /*
4302          * Build our message set to be moved/copied
4303          */
4304         msgs = malloc(num_msgs * sizeof(long));
4305         for (i=0; i<num_msgs; ++i) {
4306                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4307                 msgs[i] = atol(msgtok);
4308         }
4309
4310         num_deleted = CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4311         free(msgs);
4312
4313         if (num_deleted) {
4314                 cprintf("%d %d message%s deleted.\n", CIT_OK,
4315                         num_deleted, ((num_deleted != 1) ? "s" : ""));
4316         } else {
4317                 cprintf("%d Message not found.\n", ERROR + MESSAGE_NOT_FOUND);
4318         }
4319 }
4320
4321
4322
4323
4324 /*
4325  * move or copy a message to another room
4326  */
4327 void cmd_move(char *args)
4328 {
4329         char msgset[SIZ];
4330         char msgtok[32];
4331         long *msgs;
4332         int num_msgs = 0;
4333
4334         char targ[ROOMNAMELEN];
4335         struct ctdlroom qtemp;
4336         int err;
4337         int is_copy = 0;
4338         int ra;
4339         int permit = 0;
4340         int i;
4341
4342         extract_token(msgset, args, 0, '|', sizeof msgset);
4343         num_msgs = num_tokens(msgset, ',');
4344         if (num_msgs < 1) {
4345                 cprintf("%d Nothing to do.\n", CIT_OK);
4346                 return;
4347         }
4348
4349         extract_token(targ, args, 1, '|', sizeof targ);
4350         convert_room_name_macros(targ, sizeof targ);
4351         targ[ROOMNAMELEN - 1] = 0;
4352         is_copy = extract_int(args, 2);
4353
4354         if (CtdlGetRoom(&qtemp, targ) != 0) {
4355                 cprintf("%d '%s' does not exist.\n", ERROR + ROOM_NOT_FOUND, targ);
4356                 return;
4357         }
4358
4359         if (!strcasecmp(qtemp.QRname, CC->room.QRname)) {
4360                 cprintf("%d Source and target rooms are the same.\n", ERROR + ALREADY_EXISTS);
4361                 return;
4362         }
4363
4364         CtdlGetUser(&CC->user, CC->curr_user);
4365         CtdlRoomAccess(&qtemp, &CC->user, &ra, NULL);
4366
4367         /* Check for permission to perform this operation.
4368          * Remember: "CC->room" is source, "qtemp" is target.
4369          */
4370         permit = 0;
4371
4372         /* Aides can move/copy */
4373         if (CC->user.axlevel >= AxAideU) permit = 1;
4374
4375         /* Room aides can move/copy */
4376         if (CC->user.usernum == CC->room.QRroomaide) permit = 1;
4377
4378         /* Permit move/copy from personal rooms */
4379         if ((CC->room.QRflags & QR_MAILBOX)
4380            && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
4381
4382         /* Permit only copy from public to personal room */
4383         if ( (is_copy)
4384            && (!(CC->room.QRflags & QR_MAILBOX))
4385            && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
4386
4387         /* Permit message removal from collaborative delete rooms */
4388         if (CC->room.QRflags2 & QR2_COLLABDEL) permit = 1;
4389
4390         /* Users allowed to post into the target room may move into it too. */
4391         if ((CC->room.QRflags & QR_MAILBOX) &&
4392             (qtemp.QRflags & UA_POSTALLOWED))  permit = 1;
4393
4394         /* User must have access to target room */
4395         if (!(ra & UA_KNOWN))  permit = 0;
4396
4397         if (!permit) {
4398                 cprintf("%d Higher access required.\n",
4399                         ERROR + HIGHER_ACCESS_REQUIRED);
4400                 return;
4401         }
4402
4403         /*
4404          * Build our message set to be moved/copied
4405          */
4406         msgs = malloc(num_msgs * sizeof(long));
4407         for (i=0; i<num_msgs; ++i) {
4408                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4409                 msgs[i] = atol(msgtok);
4410         }
4411
4412         /*
4413          * Do the copy
4414          */
4415         err = CtdlSaveMsgPointersInRoom(targ, msgs, num_msgs, 1, NULL, 0);
4416         if (err != 0) {
4417                 cprintf("%d Cannot store message(s) in %s: error %d\n",
4418                         err, targ, err);
4419                 free(msgs);
4420                 return;
4421         }
4422
4423         /* Now delete the message from the source room,
4424          * if this is a 'move' rather than a 'copy' operation.
4425          */
4426         if (is_copy == 0) {
4427                 CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4428         }
4429         free(msgs);
4430
4431         cprintf("%d Message(s) %s.\n", CIT_OK, (is_copy ? "copied" : "moved") );
4432 }
4433
4434
4435
4436 /*
4437  * GetMetaData()  -  Get the supplementary record for a message
4438  */
4439 void GetMetaData(struct MetaData *smibuf, long msgnum)
4440 {
4441
4442         struct cdbdata *cdbsmi;
4443         long TheIndex;
4444
4445         memset(smibuf, 0, sizeof(struct MetaData));
4446         smibuf->meta_msgnum = msgnum;
4447         smibuf->meta_refcount = 1;      /* Default reference count is 1 */
4448
4449         /* Use the negative of the message number for its supp record index */
4450         TheIndex = (0L - msgnum);
4451
4452         cdbsmi = cdb_fetch(CDB_MSGMAIN, &TheIndex, sizeof(long));
4453         if (cdbsmi == NULL) {
4454                 return;         /* record not found; go with defaults */
4455         }
4456         memcpy(smibuf, cdbsmi->ptr,
4457                ((cdbsmi->len > sizeof(struct MetaData)) ?
4458                 sizeof(struct MetaData) : cdbsmi->len));
4459         cdb_free(cdbsmi);
4460         return;
4461 }
4462
4463
4464 /*
4465  * PutMetaData()  -  (re)write supplementary record for a message
4466  */
4467 void PutMetaData(struct MetaData *smibuf)
4468 {
4469         long TheIndex;
4470
4471         /* Use the negative of the message number for the metadata db index */
4472         TheIndex = (0L - smibuf->meta_msgnum);
4473
4474         cdb_store(CDB_MSGMAIN,
4475                   &TheIndex, (int)sizeof(long),
4476                   smibuf, (int)sizeof(struct MetaData));
4477
4478 }
4479
4480 /*
4481  * AdjRefCount  -  submit an adjustment to the reference count for a message.
4482  *                 (These are just queued -- we actually process them later.)
4483  */
4484 void AdjRefCount(long msgnum, int incr)
4485 {
4486         struct arcq new_arcq;
4487         int rv = 0;
4488
4489         CtdlLogPrintf(CTDL_DEBUG, "AdjRefCount() msg %ld ref count delta %+d\n",
4490                 msgnum, incr
4491         );
4492
4493         begin_critical_section(S_SUPPMSGMAIN);
4494         if (arcfp == NULL) {
4495                 arcfp = fopen(file_arcq, "ab+");
4496         }
4497         end_critical_section(S_SUPPMSGMAIN);
4498
4499         /* msgnum < 0 means that we're trying to close the file */
4500         if (msgnum < 0) {
4501                 CtdlLogPrintf(CTDL_DEBUG, "Closing the AdjRefCount queue file\n");
4502                 begin_critical_section(S_SUPPMSGMAIN);
4503                 if (arcfp != NULL) {
4504                         fclose(arcfp);
4505                         arcfp = NULL;
4506                 }
4507                 end_critical_section(S_SUPPMSGMAIN);
4508                 return;
4509         }
4510
4511         /*
4512          * If we can't open the queue, perform the operation synchronously.
4513          */
4514         if (arcfp == NULL) {
4515                 TDAP_AdjRefCount(msgnum, incr);
4516                 return;
4517         }
4518
4519         new_arcq.arcq_msgnum = msgnum;
4520         new_arcq.arcq_delta = incr;
4521         rv = fwrite(&new_arcq, sizeof(struct arcq), 1, arcfp);
4522         fflush(arcfp);
4523
4524         return;
4525 }
4526
4527
4528 /*
4529  * TDAP_ProcessAdjRefCountQueue()
4530  *
4531  * Process the queue of message count adjustments that was created by calls
4532  * to AdjRefCount() ... by reading the queue and calling TDAP_AdjRefCount()
4533  * for each one.  This should be an "off hours" operation.
4534  */
4535 int TDAP_ProcessAdjRefCountQueue(void)
4536 {
4537         char file_arcq_temp[PATH_MAX];
4538         int r;
4539         FILE *fp;
4540         struct arcq arcq_rec;
4541         int num_records_processed = 0;
4542
4543         snprintf(file_arcq_temp, sizeof file_arcq_temp, "%s.%04x", file_arcq, rand());
4544
4545         begin_critical_section(S_SUPPMSGMAIN);
4546         if (arcfp != NULL) {
4547                 fclose(arcfp);
4548                 arcfp = NULL;
4549         }
4550
4551         r = link(file_arcq, file_arcq_temp);
4552         if (r != 0) {
4553                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4554                 end_critical_section(S_SUPPMSGMAIN);
4555                 return(num_records_processed);
4556         }
4557
4558         unlink(file_arcq);
4559         end_critical_section(S_SUPPMSGMAIN);
4560
4561         fp = fopen(file_arcq_temp, "rb");
4562         if (fp == NULL) {
4563                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4564                 return(num_records_processed);
4565         }
4566
4567         while (fread(&arcq_rec, sizeof(struct arcq), 1, fp) == 1) {
4568                 TDAP_AdjRefCount(arcq_rec.arcq_msgnum, arcq_rec.arcq_delta);
4569                 ++num_records_processed;
4570         }
4571
4572         fclose(fp);
4573         r = unlink(file_arcq_temp);
4574         if (r != 0) {
4575                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4576         }
4577
4578         return(num_records_processed);
4579 }
4580
4581
4582
4583 /*
4584  * TDAP_AdjRefCount  -  adjust the reference count for a message.
4585  *                      This one does it "for real" because it's called by
4586  *                      the autopurger function that processes the queue
4587  *                      created by AdjRefCount().   If a message's reference
4588  *                      count becomes zero, we also delete the message from
4589  *                      disk and de-index it.
4590  */
4591 void TDAP_AdjRefCount(long msgnum, int incr)
4592 {
4593
4594         struct MetaData smi;
4595         long delnum;
4596
4597         /* This is a *tight* critical section; please keep it that way, as
4598          * it may get called while nested in other critical sections.
4599          * Complicating this any further will surely cause deadlock!
4600          */
4601         begin_critical_section(S_SUPPMSGMAIN);
4602         GetMetaData(&smi, msgnum);
4603         smi.meta_refcount += incr;
4604         PutMetaData(&smi);
4605         end_critical_section(S_SUPPMSGMAIN);
4606         CtdlLogPrintf(CTDL_DEBUG, "TDAP_AdjRefCount() msg %ld ref count delta %+d, is now %d\n",
4607                 msgnum, incr, smi.meta_refcount
4608         );
4609
4610         /* If the reference count is now zero, delete the message
4611          * (and its supplementary record as well).
4612          */
4613         if (smi.meta_refcount == 0) {
4614                 CtdlLogPrintf(CTDL_DEBUG, "Deleting message <%ld>\n", msgnum);
4615
4616                 /* Call delete hooks with NULL room to show it has gone altogether */
4617                 PerformDeleteHooks(NULL, msgnum);
4618
4619                 /* Remove from message base */
4620                 delnum = msgnum;
4621                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
4622                 cdb_delete(CDB_BIGMSGS, &delnum, (int)sizeof(long));
4623
4624                 /* Remove metadata record */
4625                 delnum = (0L - msgnum);
4626                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
4627         }
4628
4629 }
4630
4631 /*
4632  * Write a generic object to this room
4633  *
4634  * Note: this could be much more efficient.  Right now we use two temporary
4635  * files, and still pull the message into memory as with all others.
4636  */
4637 void CtdlWriteObject(char *req_room,                    /* Room to stuff it in */
4638                         char *content_type,             /* MIME type of this object */
4639                         char *raw_message,              /* Data to be written */
4640                         off_t raw_length,               /* Size of raw_message */
4641                         struct ctdluser *is_mailbox,    /* Mailbox room? */
4642                         int is_binary,                  /* Is encoding necessary? */
4643                         int is_unique,                  /* Del others of this type? */
4644                         unsigned int flags              /* Internal save flags */
4645                         )
4646 {
4647
4648         struct ctdlroom qrbuf;
4649         char roomname[ROOMNAMELEN];
4650         struct CtdlMessage *msg;
4651         char *encoded_message = NULL;
4652
4653         if (is_mailbox != NULL) {
4654                 CtdlMailboxName(roomname, sizeof roomname, is_mailbox, req_room);
4655         }
4656         else {
4657                 safestrncpy(roomname, req_room, sizeof(roomname));
4658         }
4659
4660         CtdlLogPrintf(CTDL_DEBUG, "Raw length is %ld\n", (long)raw_length);
4661
4662         if (is_binary) {
4663                 encoded_message = malloc((size_t) (((raw_length * 134) / 100) + 4096 ) );
4664         }
4665         else {
4666                 encoded_message = malloc((size_t)(raw_length + 4096));
4667         }
4668
4669         sprintf(encoded_message, "Content-type: %s\n", content_type);
4670
4671         if (is_binary) {
4672                 sprintf(&encoded_message[strlen(encoded_message)],
4673                         "Content-transfer-encoding: base64\n\n"
4674                 );
4675         }
4676         else {
4677                 sprintf(&encoded_message[strlen(encoded_message)],
4678                         "Content-transfer-encoding: 7bit\n\n"
4679                 );
4680         }
4681
4682         if (is_binary) {
4683                 CtdlEncodeBase64(
4684                         &encoded_message[strlen(encoded_message)],
4685                         raw_message,
4686                         (int)raw_length,
4687                         0
4688                 );
4689         }
4690         else {
4691                 memcpy(
4692                         &encoded_message[strlen(encoded_message)],
4693                         raw_message,
4694                         (int)(raw_length+1)
4695                 );
4696         }
4697
4698         CtdlLogPrintf(CTDL_DEBUG, "Allocating\n");
4699         msg = malloc(sizeof(struct CtdlMessage));
4700         memset(msg, 0, sizeof(struct CtdlMessage));
4701         msg->cm_magic = CTDLMESSAGE_MAGIC;
4702         msg->cm_anon_type = MES_NORMAL;
4703         msg->cm_format_type = 4;
4704         msg->cm_fields['A'] = strdup(CC->user.fullname);
4705         msg->cm_fields['O'] = strdup(req_room);
4706         msg->cm_fields['N'] = strdup(config.c_nodename);
4707         msg->cm_fields['H'] = strdup(config.c_humannode);
4708         msg->cm_flags = flags;
4709
4710         msg->cm_fields['M'] = encoded_message;
4711
4712         /* Create the requested room if we have to. */
4713         if (CtdlGetRoom(&qrbuf, roomname) != 0) {
4714                 CtdlCreateRoom(roomname,
4715                         ( (is_mailbox != NULL) ? 5 : 3 ),
4716                         "", 0, 1, 0, VIEW_BBS);
4717         }
4718         /* If the caller specified this object as unique, delete all
4719          * other objects of this type that are currently in the room.
4720          */
4721         if (is_unique) {
4722                 CtdlLogPrintf(CTDL_DEBUG, "Deleted %d other msgs of this type\n",
4723                         CtdlDeleteMessages(roomname, NULL, 0, content_type)
4724                 );
4725         }
4726         /* Now write the data */
4727         CtdlSubmitMsg(msg, NULL, roomname, 0);
4728         CtdlFreeMessage(msg);
4729 }
4730
4731
4732
4733
4734
4735
4736 void CtdlGetSysConfigBackend(long msgnum, void *userdata) {
4737         config_msgnum = msgnum;
4738 }
4739
4740
4741 char *CtdlGetSysConfig(char *sysconfname) {
4742         char hold_rm[ROOMNAMELEN];
4743         long msgnum;
4744         char *conf;
4745         struct CtdlMessage *msg;
4746         char buf[SIZ];
4747
4748         strcpy(hold_rm, CC->room.QRname);
4749         if (CtdlGetRoom(&CC->room, SYSCONFIGROOM) != 0) {
4750                 CtdlGetRoom(&CC->room, hold_rm);
4751                 return NULL;
4752         }
4753
4754
4755         /* We want the last (and probably only) config in this room */
4756         begin_critical_section(S_CONFIG);
4757         config_msgnum = (-1L);
4758         CtdlForEachMessage(MSGS_LAST, 1, NULL, sysconfname, NULL,
4759                 CtdlGetSysConfigBackend, NULL);
4760         msgnum = config_msgnum;
4761         end_critical_section(S_CONFIG);
4762
4763         if (msgnum < 0L) {
4764                 conf = NULL;
4765         }
4766         else {
4767                 msg = CtdlFetchMessage(msgnum, 1);
4768                 if (msg != NULL) {
4769                         conf = strdup(msg->cm_fields['M']);
4770                         CtdlFreeMessage(msg);
4771                 }
4772                 else {
4773                         conf = NULL;
4774                 }
4775         }
4776
4777         CtdlGetRoom(&CC->room, hold_rm);
4778
4779         if (conf != NULL) do {
4780                 extract_token(buf, conf, 0, '\n', sizeof buf);
4781                 strcpy(conf, &conf[strlen(buf)+1]);
4782         } while ( (!IsEmptyStr(conf)) && (!IsEmptyStr(buf)) );
4783
4784         return(conf);
4785 }
4786
4787
4788 void CtdlPutSysConfig(char *sysconfname, char *sysconfdata) {
4789         CtdlWriteObject(SYSCONFIGROOM, sysconfname, sysconfdata, (strlen(sysconfdata)+1), NULL, 0, 1, 0);
4790 }
4791
4792
4793 /*
4794  * Determine whether a given Internet address belongs to the current user
4795  */
4796 int CtdlIsMe(char *addr, int addr_buf_len)
4797 {
4798         struct recptypes *recp;
4799         int i;
4800
4801         recp = validate_recipients(addr, NULL, 0);
4802         if (recp == NULL) return(0);
4803
4804         if (recp->num_local == 0) {
4805                 free_recipients(recp);
4806                 return(0);
4807         }
4808
4809         for (i=0; i<recp->num_local; ++i) {
4810                 extract_token(addr, recp->recp_local, i, '|', addr_buf_len);
4811                 if (!strcasecmp(addr, CC->user.fullname)) {
4812                         free_recipients(recp);
4813                         return(1);
4814                 }
4815         }
4816
4817         free_recipients(recp);
4818         return(0);
4819 }
4820
4821
4822 /*
4823  * Citadel protocol command to do the same
4824  */
4825 void cmd_isme(char *argbuf) {
4826         char addr[256];
4827
4828         if (CtdlAccessCheck(ac_logged_in)) return;
4829         extract_token(addr, argbuf, 0, '|', sizeof addr);
4830
4831         if (CtdlIsMe(addr, sizeof addr)) {
4832                 cprintf("%d %s\n", CIT_OK, addr);
4833         }
4834         else {
4835                 cprintf("%d Not you.\n", ERROR + ILLEGAL_VALUE);
4836         }
4837
4838 }
4839
4840
4841 /*****************************************************************************/
4842 /*                      MODULE INITIALIZATION STUFF                          */
4843 /*****************************************************************************/
4844
4845 CTDL_MODULE_INIT(msgbase)
4846 {
4847         if (!threading) {
4848                 CtdlRegisterProtoHook(cmd_msgs, "MSGS", "Output a list of messages in the current room");
4849                 CtdlRegisterProtoHook(cmd_msg0, "MSG0", "Output a message in plain text format");
4850                 CtdlRegisterProtoHook(cmd_msg2, "MSG2", "Output a message in RFC822 format");
4851                 CtdlRegisterProtoHook(cmd_msg3, "MSG3", "Output a message in raw format (deprecated)");
4852                 CtdlRegisterProtoHook(cmd_msg4, "MSG4", "Output a message in the client's preferred format");
4853                 CtdlRegisterProtoHook(cmd_msgp, "MSGP", "Select preferred format for MSG4 output");
4854                 CtdlRegisterProtoHook(cmd_opna, "OPNA", "Open an attachment for download");
4855                 CtdlRegisterProtoHook(cmd_dlat, "DLAT", "Download an attachment");
4856                 CtdlRegisterProtoHook(cmd_ent0, "ENT0", "Enter a message");
4857                 CtdlRegisterProtoHook(cmd_dele, "DELE", "Delete a message");
4858                 CtdlRegisterProtoHook(cmd_move, "MOVE", "Move or copy a message to another room");
4859                 CtdlRegisterProtoHook(cmd_isme, "ISME", "Determine whether an email address belongs to a user");
4860         }
4861
4862         /* return our Subversion id for the Log */
4863         return "$Id$";
4864 }