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
2053                         char outbuf[1024];
2054                         int outlen = 0;
2055                         int nllen = strlen(nl);
2056                         prev_ch = 0;
2057                         while (*mptr != '\0') {
2058                                 if (*mptr == '\r') {
2059                                         /* do nothing */
2060                                 }
2061                                 else {
2062                                         if ((!eoh) &&
2063                                             (*mptr == '\n'))
2064                                         {
2065                                                 if (crlf) {
2066                                                         eoh = (*(mptr+1) == '\r') && (*(mptr+2) == '\n');
2067                                                 }
2068                                                 else {
2069                                                         eoh = *(mptr+1) == '\n';
2070                                                 }
2071                                         }
2072
2073                                         if (
2074                                                 ((headers_only == HEADERS_NONE) && (eoh))
2075                                            ||   ((headers_only == HEADERS_ONLY) && (!eoh))
2076                                            ||   ((headers_only != HEADERS_NONE) && (headers_only != HEADERS_ONLY))
2077                                         ) {
2078                                                 if (*mptr == '\n') {
2079                                                         memcpy(&outbuf[outlen], nl, nllen);
2080                                                         outlen += nllen;
2081                                                         outbuf[outlen] = '\0';
2082                                                 }
2083                                                 else {
2084                                                         outbuf[outlen++] = *mptr;
2085                                                 }
2086                                         }
2087                                 }
2088                                 if (flags & ESC_DOT)
2089                                 {
2090                                         if ((prev_ch == '\n') && (*mptr == '.') && ((*(mptr+1) == '\r') || (*(mptr+1) == '\n')))
2091                                         {
2092                                                 outbuf[outlen++] = '.';
2093                                         }
2094                                 }
2095                                 prev_ch = *mptr;
2096                                 ++mptr;
2097                                 if (outlen > 1000) {
2098                                         client_write(outbuf, outlen);
2099                                         outlen = 0;
2100                                 }
2101                         }
2102                         if (outlen > 0) {
2103                                 client_write(outbuf, outlen);
2104                                 outlen = 0;
2105                         }
2106
2107                         goto DONE;
2108                 }
2109         }
2110
2111         if (headers_only == HEADERS_ONLY) {
2112                 goto DONE;
2113         }
2114
2115         /* signify start of msg text */
2116         if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
2117                 if (do_proto) cprintf("text\n");
2118         }
2119
2120         /* If the format type on disk is 1 (fixed-format), then we want
2121          * everything to be output completely literally ... regardless of
2122          * what message transfer format is in use.
2123          */
2124         if (TheMessage->cm_format_type == FMT_FIXED) {
2125                 int buflen;
2126                 int xlline = 0;
2127                 int nllen = strlen (nl);
2128                 if (mode == MT_MIME) {
2129                         cprintf("Content-type: text/plain\n\n");
2130                 }
2131                 *buf = '\0';
2132                 buflen = 0;
2133                 while (ch = *mptr++, ch > 0) {
2134                         if (ch == '\n')
2135                                 ch = '\r';
2136
2137                         if ((buflen > 250) && (!xlline)){
2138                                 int tbuflen;
2139                                 tbuflen = buflen;
2140
2141                                 while ((buflen > 0) &&
2142                                        (!isspace(buf[buflen])))
2143                                         buflen --;
2144                                 if (buflen == 0) {
2145                                         xlline = 1;
2146                                 }
2147                                 else {
2148                                         mptr -= tbuflen - buflen;
2149                                         buf[buflen] = '\0';
2150                                         ch = '\r';
2151                                 }
2152                         }
2153                         /* if we reach the outer bounds of our buffer,
2154                            abort without respect what whe purge. */
2155                         if (xlline &&
2156                             ((isspace(ch)) ||
2157                              (buflen > SIZ - nllen - 2)))
2158                                 ch = '\r';
2159
2160                         if (ch == '\r') {
2161                                 memcpy (&buf[buflen], nl, nllen);
2162                                 buflen += nllen;
2163                                 buf[buflen] = '\0';
2164
2165                                 client_write(buf, buflen);
2166                                 *buf = '\0';
2167                                 buflen = 0;
2168                                 xlline = 0;
2169                         } else {
2170                                 buf[buflen] = ch;
2171                                 buflen++;
2172                         }
2173                 }
2174                 buf[buflen] = '\0';
2175                 if (!IsEmptyStr(buf))
2176                         cprintf("%s%s", buf, nl);
2177         }
2178
2179         /* If the message on disk is format 0 (Citadel vari-format), we
2180          * output using the formatter at 80 columns.  This is the final output
2181          * form if the transfer format is RFC822, but if the transfer format
2182          * is Citadel proprietary, it'll still work, because the indentation
2183          * for new paragraphs is correct and the client will reformat the
2184          * message to the reader's screen width.
2185          */
2186         if (TheMessage->cm_format_type == FMT_CITADEL) {
2187                 if (mode == MT_MIME) {
2188                         cprintf("Content-type: text/x-citadel-variformat\n\n");
2189                 }
2190                 memfmout(mptr, nl);
2191         }
2192
2193         /* If the message on disk is format 4 (MIME), we've gotta hand it
2194          * off to the MIME parser.  The client has already been told that
2195          * this message is format 1 (fixed format), so the callback function
2196          * we use will display those parts as-is.
2197          */
2198         if (TheMessage->cm_format_type == FMT_RFC822) {
2199                 memset(&ma, 0, sizeof(struct ma_info));
2200
2201                 if (mode == MT_MIME) {
2202                         ma.use_fo_hooks = 0;
2203                         strcpy(ma.chosen_part, "1");
2204                         ma.chosen_pref = 9999;
2205                         mime_parser(mptr, NULL,
2206                                 *choose_preferred, *fixed_output_pre,
2207                                 *fixed_output_post, (void *)&ma, 0);
2208                         mime_parser(mptr, NULL,
2209                                 *output_preferred, NULL, NULL, (void *)&ma, CC->msg4_dont_decode);
2210                 }
2211                 else {
2212                         ma.use_fo_hooks = 1;
2213                         mime_parser(mptr, NULL,
2214                                 *fixed_output, *fixed_output_pre,
2215                                 *fixed_output_post, (void *)&ma, 0);
2216                 }
2217
2218         }
2219
2220 DONE:   /* now we're done */
2221         if (do_proto) cprintf("000\n");
2222         return(om_ok);
2223 }
2224
2225
2226
2227 /*
2228  * display a message (mode 0 - Citadel proprietary)
2229  */
2230 void cmd_msg0(char *cmdbuf)
2231 {
2232         long msgid;
2233         int headers_only = HEADERS_ALL;
2234
2235         msgid = extract_long(cmdbuf, 0);
2236         headers_only = extract_int(cmdbuf, 1);
2237
2238         CtdlOutputMsg(msgid, MT_CITADEL, headers_only, 1, 0, NULL, 0);
2239         return;
2240 }
2241
2242
2243 /*
2244  * display a message (mode 2 - RFC822)
2245  */
2246 void cmd_msg2(char *cmdbuf)
2247 {
2248         long msgid;
2249         int headers_only = HEADERS_ALL;
2250
2251         msgid = extract_long(cmdbuf, 0);
2252         headers_only = extract_int(cmdbuf, 1);
2253
2254         CtdlOutputMsg(msgid, MT_RFC822, headers_only, 1, 1, NULL, 0);
2255 }
2256
2257
2258
2259 /*
2260  * display a message (mode 3 - IGnet raw format - internal programs only)
2261  */
2262 void cmd_msg3(char *cmdbuf)
2263 {
2264         long msgnum;
2265         struct CtdlMessage *msg = NULL;
2266         struct ser_ret smr;
2267
2268         if (CC->internal_pgm == 0) {
2269                 cprintf("%d This command is for internal programs only.\n",
2270                         ERROR + HIGHER_ACCESS_REQUIRED);
2271                 return;
2272         }
2273
2274         msgnum = extract_long(cmdbuf, 0);
2275         msg = CtdlFetchMessage(msgnum, 1);
2276         if (msg == NULL) {
2277                 cprintf("%d Message %ld not found.\n",
2278                         ERROR + MESSAGE_NOT_FOUND, msgnum);
2279                 return;
2280         }
2281
2282         serialize_message(&smr, msg);
2283         CtdlFreeMessage(msg);
2284
2285         if (smr.len == 0) {
2286                 cprintf("%d Unable to serialize message\n",
2287                         ERROR + INTERNAL_ERROR);
2288                 return;
2289         }
2290
2291         cprintf("%d %ld\n", BINARY_FOLLOWS, (long)smr.len);
2292         client_write((char *)smr.ser, (int)smr.len);
2293         free(smr.ser);
2294 }
2295
2296
2297
2298 /*
2299  * Display a message using MIME content types
2300  */
2301 void cmd_msg4(char *cmdbuf)
2302 {
2303         long msgid;
2304         char section[64];
2305
2306         msgid = extract_long(cmdbuf, 0);
2307         extract_token(section, cmdbuf, 1, '|', sizeof section);
2308         CtdlOutputMsg(msgid, MT_MIME, 0, 1, 0, (section[0] ? section : NULL) , 0);
2309 }
2310
2311
2312
2313 /*
2314  * Client tells us its preferred message format(s)
2315  */
2316 void cmd_msgp(char *cmdbuf)
2317 {
2318         if (!strcasecmp(cmdbuf, "dont_decode")) {
2319                 CC->msg4_dont_decode = 1;
2320                 cprintf("%d MSG4 will not pre-decode messages.\n", CIT_OK);
2321         }
2322         else {
2323                 safestrncpy(CC->preferred_formats, cmdbuf, sizeof(CC->preferred_formats));
2324                 cprintf("%d Preferred MIME formats have been set.\n", CIT_OK);
2325         }
2326 }
2327
2328
2329 /*
2330  * Open a component of a MIME message as a download file
2331  */
2332 void cmd_opna(char *cmdbuf)
2333 {
2334         long msgid;
2335         char desired_section[128];
2336
2337         msgid = extract_long(cmdbuf, 0);
2338         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2339         safestrncpy(CC->download_desired_section, desired_section,
2340                 sizeof CC->download_desired_section);
2341         CtdlOutputMsg(msgid, MT_DOWNLOAD, 0, 1, 1, NULL, 0);
2342 }
2343
2344
2345 /*
2346  * Open a component of a MIME message and transmit it all at once
2347  */
2348 void cmd_dlat(char *cmdbuf)
2349 {
2350         long msgid;
2351         char desired_section[128];
2352
2353         msgid = extract_long(cmdbuf, 0);
2354         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2355         safestrncpy(CC->download_desired_section, desired_section,
2356                 sizeof CC->download_desired_section);
2357         CtdlOutputMsg(msgid, MT_SPEW_SECTION, 0, 1, 1, NULL, 0);
2358 }
2359
2360
2361 /*
2362  * Save one or more message pointers into a specified room
2363  * (Returns 0 for success, nonzero for failure)
2364  * roomname may be NULL to use the current room
2365  *
2366  * Note that the 'supplied_msg' field may be set to NULL, in which case
2367  * the message will be fetched from disk, by number, if we need to perform
2368  * replication checks.  This adds an additional database read, so if the
2369  * caller already has the message in memory then it should be supplied.  (Obviously
2370  * this mode of operation only works if we're saving a single message.)
2371  */
2372 int CtdlSaveMsgPointersInRoom(char *roomname, long newmsgidlist[], int num_newmsgs,
2373                                 int do_repl_check, struct CtdlMessage *supplied_msg)
2374 {
2375         int i, j, unique;
2376         char hold_rm[ROOMNAMELEN];
2377         struct cdbdata *cdbfr;
2378         int num_msgs;
2379         long *msglist;
2380         long highest_msg = 0L;
2381
2382         long msgid = 0;
2383         struct CtdlMessage *msg = NULL;
2384
2385         long *msgs_to_be_merged = NULL;
2386         int num_msgs_to_be_merged = 0;
2387
2388         CtdlLogPrintf(CTDL_DEBUG,
2389                 "CtdlSaveMsgPointersInRoom(room=%s, num_msgs=%d, repl=%d)\n",
2390                 roomname, num_newmsgs, do_repl_check);
2391
2392         strcpy(hold_rm, CC->room.QRname);
2393
2394         /* Sanity checks */
2395         if (newmsgidlist == NULL) return(ERROR + INTERNAL_ERROR);
2396         if (num_newmsgs < 1) return(ERROR + INTERNAL_ERROR);
2397         if (num_newmsgs > 1) supplied_msg = NULL;
2398
2399         /* Now the regular stuff */
2400         if (CtdlGetRoomLock(&CC->room,
2401            ((roomname != NULL) ? roomname : CC->room.QRname) )
2402            != 0) {
2403                 CtdlLogPrintf(CTDL_ERR, "No such room <%s>\n", roomname);
2404                 return(ERROR + ROOM_NOT_FOUND);
2405         }
2406
2407
2408         msgs_to_be_merged = malloc(sizeof(long) * num_newmsgs);
2409         num_msgs_to_be_merged = 0;
2410
2411
2412         cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
2413         if (cdbfr == NULL) {
2414                 msglist = NULL;
2415                 num_msgs = 0;
2416         } else {
2417                 msglist = (long *) cdbfr->ptr;
2418                 cdbfr->ptr = NULL;      /* CtdlSaveMsgPointerInRoom() now owns this memory */
2419                 num_msgs = cdbfr->len / sizeof(long);
2420                 cdb_free(cdbfr);
2421         }
2422
2423
2424         /* Create a list of msgid's which were supplied by the caller, but do
2425          * not already exist in the target room.  It is absolutely taboo to
2426          * have more than one reference to the same message in a room.
2427          */
2428         for (i=0; i<num_newmsgs; ++i) {
2429                 unique = 1;
2430                 if (num_msgs > 0) for (j=0; j<num_msgs; ++j) {
2431                         if (msglist[j] == newmsgidlist[i]) {
2432                                 unique = 0;
2433                         }
2434                 }
2435                 if (unique) {
2436                         msgs_to_be_merged[num_msgs_to_be_merged++] = newmsgidlist[i];
2437                 }
2438         }
2439
2440         CtdlLogPrintf(9, "%d unique messages to be merged\n", num_msgs_to_be_merged);
2441
2442         /*
2443          * Now merge the new messages
2444          */
2445         msglist = realloc(msglist, (sizeof(long) * (num_msgs + num_msgs_to_be_merged)) );
2446         if (msglist == NULL) {
2447                 CtdlLogPrintf(CTDL_ALERT, "ERROR: can't realloc message list!\n");
2448         }
2449         memcpy(&msglist[num_msgs], msgs_to_be_merged, (sizeof(long) * num_msgs_to_be_merged) );
2450         num_msgs += num_msgs_to_be_merged;
2451
2452         /* Sort the message list, so all the msgid's are in order */
2453         num_msgs = sort_msglist(msglist, num_msgs);
2454
2455         /* Determine the highest message number */
2456         highest_msg = msglist[num_msgs - 1];
2457
2458         /* Write it back to disk. */
2459         cdb_store(CDB_MSGLISTS, &CC->room.QRnumber, (int)sizeof(long),
2460                   msglist, (int)(num_msgs * sizeof(long)));
2461
2462         /* Free up the memory we used. */
2463         free(msglist);
2464
2465         /* Update the highest-message pointer and unlock the room. */
2466         CC->room.QRhighest = highest_msg;
2467         CtdlPutRoomLock(&CC->room);
2468
2469         /* Perform replication checks if necessary */
2470         if ( (DoesThisRoomNeedEuidIndexing(&CC->room)) && (do_repl_check) ) {
2471                 CtdlLogPrintf(CTDL_DEBUG, "CtdlSaveMsgPointerInRoom() doing repl checks\n");
2472
2473                 for (i=0; i<num_msgs_to_be_merged; ++i) {
2474                         msgid = msgs_to_be_merged[i];
2475
2476                         if (supplied_msg != NULL) {
2477                                 msg = supplied_msg;
2478                         }
2479                         else {
2480                                 msg = CtdlFetchMessage(msgid, 0);
2481                         }
2482
2483                         if (msg != NULL) {
2484                                 ReplicationChecks(msg);
2485
2486                                 /* If the message has an Exclusive ID, index that... */
2487                                 if (msg->cm_fields['E'] != NULL) {
2488                                         index_message_by_euid(msg->cm_fields['E'], &CC->room, msgid);
2489                                 }
2490
2491                                 /* Free up the memory we may have allocated */
2492                                 if (msg != supplied_msg) {
2493                                         CtdlFreeMessage(msg);
2494                                 }
2495                         }
2496
2497                 }
2498         }
2499
2500         else {
2501                 CtdlLogPrintf(CTDL_DEBUG, "CtdlSaveMsgPointerInRoom() skips repl checks\n");
2502         }
2503
2504         /* Submit this room for processing by hooks */
2505         PerformRoomHooks(&CC->room);
2506
2507         /* Go back to the room we were in before we wandered here... */
2508         CtdlGetRoom(&CC->room, hold_rm);
2509
2510         /* Bump the reference count for all messages which were merged */
2511         for (i=0; i<num_msgs_to_be_merged; ++i) {
2512                 AdjRefCount(msgs_to_be_merged[i], +1);
2513         }
2514
2515         /* Free up memory... */
2516         if (msgs_to_be_merged != NULL) {
2517                 free(msgs_to_be_merged);
2518         }
2519
2520         /* Return success. */
2521         return (0);
2522 }
2523
2524
2525 /*
2526  * This is the same as CtdlSaveMsgPointersInRoom() but it only accepts
2527  * a single message.
2528  */
2529 int CtdlSaveMsgPointerInRoom(char *roomname, long msgid,
2530                         int do_repl_check, struct CtdlMessage *supplied_msg)
2531 {
2532         return CtdlSaveMsgPointersInRoom(roomname, &msgid, 1, do_repl_check, supplied_msg);
2533 }
2534
2535
2536
2537
2538 /*
2539  * Message base operation to save a new message to the message store
2540  * (returns new message number)
2541  *
2542  * This is the back end for CtdlSubmitMsg() and should not be directly
2543  * called by server-side modules.
2544  *
2545  */
2546 long send_message(struct CtdlMessage *msg) {
2547         long newmsgid;
2548         long retval;
2549         char msgidbuf[256];
2550         struct ser_ret smr;
2551         int is_bigmsg = 0;
2552         char *holdM = NULL;
2553
2554         /* Get a new message number */
2555         newmsgid = get_new_message_number();
2556         snprintf(msgidbuf, sizeof msgidbuf, "%010ld@%s", newmsgid, config.c_fqdn);
2557
2558         /* Generate an ID if we don't have one already */
2559         if (msg->cm_fields['I']==NULL) {
2560                 msg->cm_fields['I'] = strdup(msgidbuf);
2561         }
2562
2563         /* If the message is big, set its body aside for storage elsewhere */
2564         if (msg->cm_fields['M'] != NULL) {
2565                 if (strlen(msg->cm_fields['M']) > BIGMSG) {
2566                         is_bigmsg = 1;
2567                         holdM = msg->cm_fields['M'];
2568                         msg->cm_fields['M'] = NULL;
2569                 }
2570         }
2571
2572         /* Serialize our data structure for storage in the database */
2573         serialize_message(&smr, msg);
2574
2575         if (is_bigmsg) {
2576                 msg->cm_fields['M'] = holdM;
2577         }
2578
2579         if (smr.len == 0) {
2580                 cprintf("%d Unable to serialize message\n",
2581                         ERROR + INTERNAL_ERROR);
2582                 return (-1L);
2583         }
2584
2585         /* Write our little bundle of joy into the message base */
2586         if (cdb_store(CDB_MSGMAIN, &newmsgid, (int)sizeof(long),
2587                       smr.ser, smr.len) < 0) {
2588                 CtdlLogPrintf(CTDL_ERR, "Can't store message\n");
2589                 retval = 0L;
2590         } else {
2591                 if (is_bigmsg) {
2592                         cdb_store(CDB_BIGMSGS,
2593                                 &newmsgid,
2594                                 (int)sizeof(long),
2595                                 holdM,
2596                                 (strlen(holdM) + 1)
2597                         );
2598                 }
2599                 retval = newmsgid;
2600         }
2601
2602         /* Free the memory we used for the serialized message */
2603         free(smr.ser);
2604
2605         /* Return the *local* message ID to the caller
2606          * (even if we're storing an incoming network message)
2607          */
2608         return(retval);
2609 }
2610
2611
2612
2613 /*
2614  * Serialize a struct CtdlMessage into the format used on disk and network.
2615  *
2616  * This function loads up a "struct ser_ret" (defined in server.h) which
2617  * contains the length of the serialized message and a pointer to the
2618  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
2619  */
2620 void serialize_message(struct ser_ret *ret,             /* return values */
2621                         struct CtdlMessage *msg)        /* unserialized msg */
2622 {
2623         size_t wlen, fieldlen;
2624         int i;
2625         static char *forder = FORDER;
2626
2627         /*
2628          * Check for valid message format
2629          */
2630         if (is_valid_message(msg) == 0) {
2631                 CtdlLogPrintf(CTDL_ERR, "serialize_message() aborting due to invalid message\n");
2632                 ret->len = 0;
2633                 ret->ser = NULL;
2634                 return;
2635         }
2636
2637         ret->len = 3;
2638         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL)
2639                 ret->len = ret->len +
2640                         strlen(msg->cm_fields[(int)forder[i]]) + 2;
2641
2642         ret->ser = malloc(ret->len);
2643         if (ret->ser == NULL) {
2644                 CtdlLogPrintf(CTDL_ERR, "serialize_message() malloc(%ld) failed: %s\n",
2645                         (long)ret->len, strerror(errno));
2646                 ret->len = 0;
2647                 ret->ser = NULL;
2648                 return;
2649         }
2650
2651         ret->ser[0] = 0xFF;
2652         ret->ser[1] = msg->cm_anon_type;
2653         ret->ser[2] = msg->cm_format_type;
2654         wlen = 3;
2655
2656         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
2657                 fieldlen = strlen(msg->cm_fields[(int)forder[i]]);
2658                 ret->ser[wlen++] = (char)forder[i];
2659                 safestrncpy((char *)&ret->ser[wlen], msg->cm_fields[(int)forder[i]], fieldlen+1);
2660                 wlen = wlen + fieldlen + 1;
2661         }
2662         if (ret->len != wlen) CtdlLogPrintf(CTDL_ERR, "ERROR: len=%ld wlen=%ld\n",
2663                 (long)ret->len, (long)wlen);
2664
2665         return;
2666 }
2667
2668
2669 /*
2670  * Serialize a struct CtdlMessage into the format used on disk and network.
2671  *
2672  * This function loads up a "struct ser_ret" (defined in server.h) which
2673  * contains the length of the serialized message and a pointer to the
2674  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
2675  */
2676 void dump_message(struct CtdlMessage *msg,      /* unserialized msg */
2677                   long Siz)                     /* how many chars ? */
2678 {
2679         size_t wlen;
2680         int i;
2681         static char *forder = FORDER;
2682         char *buf;
2683
2684         /*
2685          * Check for valid message format
2686          */
2687         if (is_valid_message(msg) == 0) {
2688                 CtdlLogPrintf(CTDL_ERR, "dump_message() aborting due to invalid message\n");
2689                 return;
2690         }
2691
2692         buf = (char*) malloc (Siz + 1);
2693
2694         wlen = 3;
2695
2696         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
2697                         snprintf (buf, Siz, " msg[%c] = %s ...\n", (char) forder[i],
2698                                    msg->cm_fields[(int)forder[i]]);
2699                         client_write (buf, strlen(buf));
2700                 }
2701
2702         return;
2703 }
2704
2705
2706
2707 /*
2708  * Check to see if any messages already exist in the current room which
2709  * carry the same Exclusive ID as this one.  If any are found, delete them.
2710  */
2711 void ReplicationChecks(struct CtdlMessage *msg) {
2712         long old_msgnum = (-1L);
2713
2714         if (DoesThisRoomNeedEuidIndexing(&CC->room) == 0) return;
2715
2716         CtdlLogPrintf(CTDL_DEBUG, "Performing replication checks in <%s>\n",
2717                 CC->room.QRname);
2718
2719         /* No exclusive id?  Don't do anything. */
2720         if (msg == NULL) return;
2721         if (msg->cm_fields['E'] == NULL) return;
2722         if (IsEmptyStr(msg->cm_fields['E'])) return;
2723         /*CtdlLogPrintf(CTDL_DEBUG, "Exclusive ID: <%s> for room <%s>\n",
2724                 msg->cm_fields['E'], CC->room.QRname);*/
2725
2726         old_msgnum = CtdlLocateMessageByEuid(msg->cm_fields['E'], &CC->room);
2727         if (old_msgnum > 0L) {
2728                 CtdlLogPrintf(CTDL_DEBUG, "ReplicationChecks() replacing message %ld\n", old_msgnum);
2729                 CtdlDeleteMessages(CC->room.QRname, &old_msgnum, 1, "");
2730         }
2731 }
2732
2733
2734
2735 /*
2736  * Save a message to disk and submit it into the delivery system.
2737  */
2738 long CtdlSubmitMsg(struct CtdlMessage *msg,     /* message to save */
2739                    struct recptypes *recps,     /* recipients (if mail) */
2740                    char *force,                 /* force a particular room? */
2741                    int flags                    /* should the message be exported clean? */
2742 ) {
2743         char submit_filename[128];
2744         char generated_timestamp[32];
2745         char hold_rm[ROOMNAMELEN];
2746         char actual_rm[ROOMNAMELEN];
2747         char force_room[ROOMNAMELEN];
2748         char content_type[SIZ];                 /* We have to learn this */
2749         char recipient[SIZ];
2750         long newmsgid;
2751         const char *mptr = NULL;
2752         struct ctdluser userbuf;
2753         int a, i;
2754         struct MetaData smi;
2755         FILE *network_fp = NULL;
2756         static int seqnum = 1;
2757         struct CtdlMessage *imsg = NULL;
2758         char *instr = NULL;
2759         size_t instr_alloc = 0;
2760         struct ser_ret smr;
2761         char *hold_R, *hold_D;
2762         char *collected_addresses = NULL;
2763         struct addresses_to_be_filed *aptr = NULL;
2764         char *saved_rfc822_version = NULL;
2765         int qualified_for_journaling = 0;
2766         CitContext *CCC = CC;           /* CachedCitContext - performance boost */
2767         char bounce_to[1024] = "";
2768         size_t tmp = 0;
2769         int rv = 0;
2770
2771         CtdlLogPrintf(CTDL_DEBUG, "CtdlSubmitMsg() called\n");
2772         if (is_valid_message(msg) == 0) return(-1);     /* self check */
2773
2774         /* If this message has no timestamp, we take the liberty of
2775          * giving it one, right now.
2776          */
2777         if (msg->cm_fields['T'] == NULL) {
2778                 snprintf(generated_timestamp, sizeof generated_timestamp, "%ld", (long)time(NULL));
2779                 msg->cm_fields['T'] = strdup(generated_timestamp);
2780         }
2781
2782         /* If this message has no path, we generate one.
2783          */
2784         if (msg->cm_fields['P'] == NULL) {
2785                 if (msg->cm_fields['A'] != NULL) {
2786                         msg->cm_fields['P'] = strdup(msg->cm_fields['A']);
2787                         for (a=0; !IsEmptyStr(&msg->cm_fields['P'][a]); ++a) {
2788                                 if (isspace(msg->cm_fields['P'][a])) {
2789                                         msg->cm_fields['P'][a] = ' ';
2790                                 }
2791                         }
2792                 }
2793                 else {
2794                         msg->cm_fields['P'] = strdup("unknown");
2795                 }
2796         }
2797
2798         if (force == NULL) {
2799                 strcpy(force_room, "");
2800         }
2801         else {
2802                 strcpy(force_room, force);
2803         }
2804
2805         /* Learn about what's inside, because it's what's inside that counts */
2806         if (msg->cm_fields['M'] == NULL) {
2807                 CtdlLogPrintf(CTDL_ERR, "ERROR: attempt to save message with NULL body\n");
2808                 return(-2);
2809         }
2810
2811         switch (msg->cm_format_type) {
2812         case 0:
2813                 strcpy(content_type, "text/x-citadel-variformat");
2814                 break;
2815         case 1:
2816                 strcpy(content_type, "text/plain");
2817                 break;
2818         case 4:
2819                 strcpy(content_type, "text/plain");
2820                 mptr = bmstrcasestr(msg->cm_fields['M'], "Content-type:");
2821                 if (mptr != NULL) {
2822                         char *aptr;
2823                         safestrncpy(content_type, &mptr[13], sizeof content_type);
2824                         striplt(content_type);
2825                         aptr = content_type;
2826                         while (!IsEmptyStr(aptr)) {
2827                                 if ((*aptr == ';')
2828                                     || (*aptr == ' ')
2829                                     || (*aptr == 13)
2830                                     || (*aptr == 10)) {
2831                                         *aptr = 0;
2832                                 }
2833                                 else aptr++;
2834                         }
2835                 }
2836         }
2837
2838         /* Goto the correct room */
2839         CtdlLogPrintf(CTDL_DEBUG, "Selected room %s\n", (recps) ? CCC->room.QRname : SENTITEMS);
2840         strcpy(hold_rm, CCC->room.QRname);
2841         strcpy(actual_rm, CCC->room.QRname);
2842         if (recps != NULL) {
2843                 strcpy(actual_rm, SENTITEMS);
2844         }
2845
2846         /* If the user is a twit, move to the twit room for posting */
2847         if (TWITDETECT) {
2848                 if (CCC->user.axlevel == AxProbU) {
2849                         strcpy(hold_rm, actual_rm);
2850                         strcpy(actual_rm, config.c_twitroom);
2851                         CtdlLogPrintf(CTDL_DEBUG, "Diverting to twit room\n");
2852                 }
2853         }
2854
2855         /* ...or if this message is destined for Aide> then go there. */
2856         if (!IsEmptyStr(force_room)) {
2857                 strcpy(actual_rm, force_room);
2858         }
2859
2860         CtdlLogPrintf(CTDL_DEBUG, "Final selection: %s\n", actual_rm);
2861         if (strcasecmp(actual_rm, CCC->room.QRname)) {
2862                 /* CtdlGetRoom(&CCC->room, actual_rm); */
2863                 CtdlUserGoto(actual_rm, 0, 1, NULL, NULL);
2864         }
2865
2866         /*
2867          * If this message has no O (room) field, generate one.
2868          */
2869         if (msg->cm_fields['O'] == NULL) {
2870                 msg->cm_fields['O'] = strdup(CCC->room.QRname);
2871         }
2872
2873         /* Perform "before save" hooks (aborting if any return nonzero) */
2874         CtdlLogPrintf(CTDL_DEBUG, "Performing before-save hooks\n");
2875         if (PerformMessageHooks(msg, EVT_BEFORESAVE) > 0) return(-3);
2876
2877         /*
2878          * If this message has an Exclusive ID, and the room is replication
2879          * checking enabled, then do replication checks.
2880          */
2881         if (DoesThisRoomNeedEuidIndexing(&CCC->room)) {
2882                 ReplicationChecks(msg);
2883         }
2884
2885         /* Save it to disk */
2886         CtdlLogPrintf(CTDL_DEBUG, "Saving to disk\n");
2887         newmsgid = send_message(msg);
2888         if (newmsgid <= 0L) return(-5);
2889
2890         /* Write a supplemental message info record.  This doesn't have to
2891          * be a critical section because nobody else knows about this message
2892          * yet.
2893          */
2894         CtdlLogPrintf(CTDL_DEBUG, "Creating MetaData record\n");
2895         memset(&smi, 0, sizeof(struct MetaData));
2896         smi.meta_msgnum = newmsgid;
2897         smi.meta_refcount = 0;
2898         safestrncpy(smi.meta_content_type, content_type,
2899                         sizeof smi.meta_content_type);
2900
2901         /*
2902          * Measure how big this message will be when rendered as RFC822.
2903          * We do this for two reasons:
2904          * 1. We need the RFC822 length for the new metadata record, so the
2905          *    POP and IMAP services don't have to calculate message lengths
2906          *    while the user is waiting (multiplied by potentially hundreds
2907          *    or thousands of messages).
2908          * 2. If journaling is enabled, we will need an RFC822 version of the
2909          *    message to attach to the journalized copy.
2910          */
2911         if (CCC->redirect_buffer != NULL) {
2912                 CtdlLogPrintf(CTDL_ALERT, "CCC->redirect_buffer is not NULL during message submission!\n");
2913                 abort();
2914         }
2915         CCC->redirect_buffer = malloc(SIZ);
2916         CCC->redirect_len = 0;
2917         CCC->redirect_alloc = SIZ;
2918         CtdlOutputPreLoadedMsg(msg, MT_RFC822, HEADERS_ALL, 0, 1, QP_EADDR);
2919         smi.meta_rfc822_length = CCC->redirect_len;
2920         saved_rfc822_version = CCC->redirect_buffer;
2921         CCC->redirect_buffer = NULL;
2922         CCC->redirect_len = 0;
2923         CCC->redirect_alloc = 0;
2924
2925         PutMetaData(&smi);
2926
2927         /* Now figure out where to store the pointers */
2928         CtdlLogPrintf(CTDL_DEBUG, "Storing pointers\n");
2929
2930         /* If this is being done by the networker delivering a private
2931          * message, we want to BYPASS saving the sender's copy (because there
2932          * is no local sender; it would otherwise go to the Trashcan).
2933          */
2934         if ((!CCC->internal_pgm) || (recps == NULL)) {
2935                 if (CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 1, msg) != 0) {
2936                         CtdlLogPrintf(CTDL_ERR, "ERROR saving message pointer!\n");
2937                         CtdlSaveMsgPointerInRoom(config.c_aideroom, newmsgid, 0, msg);
2938                 }
2939         }
2940
2941         /* For internet mail, drop a copy in the outbound queue room */
2942         if ((recps != NULL) && (recps->num_internet > 0)) {
2943                 CtdlSaveMsgPointerInRoom(SMTP_SPOOLOUT_ROOM, newmsgid, 0, msg);
2944         }
2945
2946         /* If other rooms are specified, drop them there too. */
2947         if ((recps != NULL) && (recps->num_room > 0))
2948           for (i=0; i<num_tokens(recps->recp_room, '|'); ++i) {
2949                 extract_token(recipient, recps->recp_room, i,
2950                                         '|', sizeof recipient);
2951                 CtdlLogPrintf(CTDL_DEBUG, "Delivering to room <%s>\n", recipient);
2952                 CtdlSaveMsgPointerInRoom(recipient, newmsgid, 0, msg);
2953         }
2954
2955         /* Bump this user's messages posted counter. */
2956         CtdlLogPrintf(CTDL_DEBUG, "Updating user\n");
2957         CtdlGetUserLock(&CCC->user, CCC->curr_user);
2958         CCC->user.posted = CCC->user.posted + 1;
2959         CtdlPutUserLock(&CCC->user);
2960
2961         /* Decide where bounces need to be delivered */
2962         if ((recps != NULL) && (recps->bounce_to != NULL)) {
2963                 safestrncpy(bounce_to, recps->bounce_to, sizeof bounce_to);
2964         }
2965         else if (CCC->logged_in) {
2966                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", CCC->user.fullname, config.c_nodename);
2967         }
2968         else {
2969                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", msg->cm_fields['A'], msg->cm_fields['N']);
2970         }
2971
2972         /* If this is private, local mail, make a copy in the
2973          * recipient's mailbox and bump the reference count.
2974          */
2975         if ((recps != NULL) && (recps->num_local > 0))
2976           for (i=0; i<num_tokens(recps->recp_local, '|'); ++i) {
2977                 extract_token(recipient, recps->recp_local, i,
2978                                         '|', sizeof recipient);
2979                 CtdlLogPrintf(CTDL_DEBUG, "Delivering private local mail to <%s>\n",
2980                         recipient);
2981                 if (CtdlGetUser(&userbuf, recipient) == 0) {
2982                         // Add a flag so the Funambol module knows its mail
2983                         msg->cm_fields['W'] = strdup(recipient);
2984                         CtdlMailboxName(actual_rm, sizeof actual_rm, &userbuf, MAILROOM);
2985                         CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 0, msg);
2986                         CtdlBumpNewMailCounter(userbuf.usernum);
2987                         if (!IsEmptyStr(config.c_funambol_host) || !IsEmptyStr(config.c_pager_program)) {
2988                         /* Generate a instruction message for the Funambol notification
2989                          * server, in the same style as the SMTP queue
2990                          */
2991                            instr_alloc = 1024;
2992                            instr = malloc(instr_alloc);
2993                            snprintf(instr, instr_alloc,
2994                         "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
2995                         "bounceto|%s\n",
2996                         SPOOLMIME, newmsgid, (long)time(NULL),
2997                         bounce_to
2998                         );
2999
3000                            imsg = malloc(sizeof(struct CtdlMessage));
3001                            memset(imsg, 0, sizeof(struct CtdlMessage));
3002                            imsg->cm_magic = CTDLMESSAGE_MAGIC;
3003                            imsg->cm_anon_type = MES_NORMAL;
3004                            imsg->cm_format_type = FMT_RFC822;
3005                            imsg->cm_fields['A'] = strdup("Citadel");
3006                            imsg->cm_fields['J'] = strdup("do not journal");
3007                            imsg->cm_fields['M'] = instr;        /* imsg owns this memory now */
3008                            imsg->cm_fields['W'] = strdup(recipient);
3009                            CtdlSubmitMsg(imsg, NULL, FNBL_QUEUE_ROOM, 0);
3010                            CtdlFreeMessage(imsg);
3011                         }
3012                 }
3013                 else {
3014                         CtdlLogPrintf(CTDL_DEBUG, "No user <%s>\n", recipient);
3015                         CtdlSaveMsgPointerInRoom(config.c_aideroom,
3016                                 newmsgid, 0, msg);
3017                 }
3018         }
3019
3020         /* Perform "after save" hooks */
3021         CtdlLogPrintf(CTDL_DEBUG, "Performing after-save hooks\n");
3022         PerformMessageHooks(msg, EVT_AFTERSAVE);
3023
3024         /* For IGnet mail, we have to save a new copy into the spooler for
3025          * each recipient, with the R and D fields set to the recipient and
3026          * destination-node.  This has two ugly side effects: all other
3027          * recipients end up being unlisted in this recipient's copy of the
3028          * message, and it has to deliver multiple messages to the same
3029          * node.  We'll revisit this again in a year or so when everyone has
3030          * a network spool receiver that can handle the new style messages.
3031          */
3032         if ((recps != NULL) && (recps->num_ignet > 0))
3033           for (i=0; i<num_tokens(recps->recp_ignet, '|'); ++i) {
3034                 extract_token(recipient, recps->recp_ignet, i,
3035                                 '|', sizeof recipient);
3036
3037                 hold_R = msg->cm_fields['R'];
3038                 hold_D = msg->cm_fields['D'];
3039                 msg->cm_fields['R'] = malloc(SIZ);
3040                 msg->cm_fields['D'] = malloc(128);
3041                 extract_token(msg->cm_fields['R'], recipient, 0, '@', SIZ);
3042                 extract_token(msg->cm_fields['D'], recipient, 1, '@', 128);
3043
3044                 serialize_message(&smr, msg);
3045                 if (smr.len > 0) {
3046                         snprintf(submit_filename, sizeof submit_filename,
3047                                          "%s/netmail.%04lx.%04x.%04x",
3048                                          ctdl_netin_dir,
3049                                          (long) getpid(), CCC->cs_pid, ++seqnum);
3050                         network_fp = fopen(submit_filename, "wb+");
3051                         if (network_fp != NULL) {
3052                                 rv = fwrite(smr.ser, smr.len, 1, network_fp);
3053                                 fclose(network_fp);
3054                         }
3055                         free(smr.ser);
3056                 }
3057
3058                 free(msg->cm_fields['R']);
3059                 free(msg->cm_fields['D']);
3060                 msg->cm_fields['R'] = hold_R;
3061                 msg->cm_fields['D'] = hold_D;
3062         }
3063
3064         /* Go back to the room we started from */
3065         CtdlLogPrintf(CTDL_DEBUG, "Returning to original room %s\n", hold_rm);
3066         if (strcasecmp(hold_rm, CCC->room.QRname))
3067                 CtdlUserGoto(hold_rm, 0, 1, NULL, NULL);
3068
3069         /* For internet mail, generate delivery instructions.
3070          * Yes, this is recursive.  Deal with it.  Infinite recursion does
3071          * not happen because the delivery instructions message does not
3072          * contain a recipient.
3073          */
3074         if ((recps != NULL) && (recps->num_internet > 0)) {
3075                 CtdlLogPrintf(CTDL_DEBUG, "Generating delivery instructions\n");
3076                 instr_alloc = 1024;
3077                 instr = malloc(instr_alloc);
3078                 snprintf(instr, instr_alloc,
3079                         "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
3080                         "bounceto|%s\n",
3081                         SPOOLMIME, newmsgid, (long)time(NULL),
3082                         bounce_to
3083                 );
3084
3085                 if (recps->envelope_from != NULL) {
3086                         tmp = strlen(instr);
3087                         snprintf(&instr[tmp], instr_alloc-tmp, "envelope_from|%s\n", recps->envelope_from);
3088                 }
3089
3090                 for (i=0; i<num_tokens(recps->recp_internet, '|'); ++i) {
3091                         tmp = strlen(instr);
3092                         extract_token(recipient, recps->recp_internet, i, '|', sizeof recipient);
3093                         if ((tmp + strlen(recipient) + 32) > instr_alloc) {
3094                                 instr_alloc = instr_alloc * 2;
3095                                 instr = realloc(instr, instr_alloc);
3096                         }
3097                         snprintf(&instr[tmp], instr_alloc - tmp, "remote|%s|0||\n", recipient);
3098                 }
3099
3100                 imsg = malloc(sizeof(struct CtdlMessage));
3101                 memset(imsg, 0, sizeof(struct CtdlMessage));
3102                 imsg->cm_magic = CTDLMESSAGE_MAGIC;
3103                 imsg->cm_anon_type = MES_NORMAL;
3104                 imsg->cm_format_type = FMT_RFC822;
3105                 imsg->cm_fields['A'] = strdup("Citadel");
3106                 imsg->cm_fields['J'] = strdup("do not journal");
3107                 imsg->cm_fields['M'] = instr;   /* imsg owns this memory now */
3108                 CtdlSubmitMsg(imsg, NULL, SMTP_SPOOLOUT_ROOM, QP_EADDR);
3109                 CtdlFreeMessage(imsg);
3110         }
3111
3112         /*
3113          * Any addresses to harvest for someone's address book?
3114          */
3115         if ( (CCC->logged_in) && (recps != NULL) ) {
3116                 collected_addresses = harvest_collected_addresses(msg);
3117         }
3118
3119         if (collected_addresses != NULL) {
3120                 aptr = (struct addresses_to_be_filed *)
3121                         malloc(sizeof(struct addresses_to_be_filed));
3122                 CtdlMailboxName(actual_rm, sizeof actual_rm,
3123                         &CCC->user, USERCONTACTSROOM);
3124                 aptr->roomname = strdup(actual_rm);
3125                 aptr->collected_addresses = collected_addresses;
3126                 begin_critical_section(S_ATBF);
3127                 aptr->next = atbf;
3128                 atbf = aptr;
3129                 end_critical_section(S_ATBF);
3130         }
3131
3132         /*
3133          * Determine whether this message qualifies for journaling.
3134          */
3135         if (msg->cm_fields['J'] != NULL) {
3136                 qualified_for_journaling = 0;
3137         }
3138         else {
3139                 if (recps == NULL) {
3140                         qualified_for_journaling = config.c_journal_pubmsgs;
3141                 }
3142                 else if (recps->num_local + recps->num_ignet + recps->num_internet > 0) {
3143                         qualified_for_journaling = config.c_journal_email;
3144                 }
3145                 else {
3146                         qualified_for_journaling = config.c_journal_pubmsgs;
3147                 }
3148         }
3149
3150         /*
3151          * Do we have to perform journaling?  If so, hand off the saved
3152          * RFC822 version will be handed off to the journaler for background
3153          * submit.  Otherwise, we have to free the memory ourselves.
3154          */
3155         if (saved_rfc822_version != NULL) {
3156                 if (qualified_for_journaling) {
3157                         JournalBackgroundSubmit(msg, saved_rfc822_version, recps);
3158                 }
3159                 else {
3160                         free(saved_rfc822_version);
3161                 }
3162         }
3163
3164         /* Done. */
3165         return(newmsgid);
3166 }
3167
3168
3169
3170 void aide_message (char *text, char *subject)
3171 {
3172         quickie_message("Citadel",NULL,NULL,AIDEROOM,text,FMT_CITADEL,subject);
3173 }
3174
3175
3176 /*
3177  * Convenience function for generating small administrative messages.
3178  */
3179 void quickie_message(const char *from, const char *fromaddr, char *to, char *room, const char *text,
3180                         int format_type, const char *subject)
3181 {
3182         struct CtdlMessage *msg;
3183         struct recptypes *recp = NULL;
3184
3185         msg = malloc(sizeof(struct CtdlMessage));
3186         memset(msg, 0, sizeof(struct CtdlMessage));
3187         msg->cm_magic = CTDLMESSAGE_MAGIC;
3188         msg->cm_anon_type = MES_NORMAL;
3189         msg->cm_format_type = format_type;
3190
3191         if (from != NULL) {
3192                 msg->cm_fields['A'] = strdup(from);
3193         }
3194         else if (fromaddr != NULL) {
3195                 msg->cm_fields['A'] = strdup(fromaddr);
3196                 if (strchr(msg->cm_fields['A'], '@')) {
3197                         *strchr(msg->cm_fields['A'], '@') = 0;
3198                 }
3199         }
3200         else {
3201                 msg->cm_fields['A'] = strdup("Citadel");
3202         }
3203
3204         if (fromaddr != NULL) msg->cm_fields['F'] = strdup(fromaddr);
3205         if (room != NULL) msg->cm_fields['O'] = strdup(room);
3206         msg->cm_fields['N'] = strdup(NODENAME);
3207         if (to != NULL) {
3208                 msg->cm_fields['R'] = strdup(to);
3209                 recp = validate_recipients(to, NULL, 0);
3210         }
3211         if (subject != NULL) {
3212                 msg->cm_fields['U'] = strdup(subject);
3213         }
3214         msg->cm_fields['M'] = strdup(text);
3215
3216         CtdlSubmitMsg(msg, recp, room, 0);
3217         CtdlFreeMessage(msg);
3218         if (recp != NULL) free_recipients(recp);
3219 }
3220
3221
3222
3223 /*
3224  * Back end function used by CtdlMakeMessage() and similar functions
3225  */
3226 StrBuf *CtdlReadMessageBodyBuf(char *terminator,        /* token signalling EOT */
3227                                long tlen,
3228                                size_t maxlen,           /* maximum message length */
3229                                char *exist,             /* if non-null, append to it;
3230                                                            exist is ALWAYS freed  */
3231                                int crlf,                /* CRLF newlines instead of LF */
3232                                int *sock                /* socket handle or 0 for this session's client socket */
3233                         )
3234 {
3235         StrBuf *Message;
3236         StrBuf *LineBuf;
3237         int flushing = 0;
3238         int finished = 0;
3239         int dotdot = 0;
3240
3241         LineBuf = NewStrBufPlain(NULL, SIZ);
3242         if (exist == NULL) {
3243                 Message = NewStrBufPlain(NULL, 4 * SIZ);
3244         }
3245         else {
3246                 Message = NewStrBufPlain(exist, -1);
3247                 free(exist);
3248         }
3249
3250         /* Do we need to change leading ".." to "." for SMTP escaping? */
3251         if ((tlen == 1) && (*terminator == '.')) {
3252                 dotdot = 1;
3253         }
3254
3255         /* read in the lines of message text one by one */
3256         do {
3257                 if (sock != NULL) {
3258                         if ((CtdlSockGetLine(sock, LineBuf) < 0) ||
3259                             (*sock == -1))
3260                                 finished = 1;
3261                 }
3262                 else {
3263                         if (CtdlClientGetLine(LineBuf) < 0) finished = 1;
3264                 }
3265                 if ((StrLength(LineBuf) == tlen) &&
3266                     (!strcmp(ChrPtr(LineBuf), terminator)))
3267                         finished = 1;
3268
3269                 if ( (!flushing) && (!finished) ) {
3270                         if (crlf) {
3271                                 StrBufAppendBufPlain(LineBuf, HKEY("\r\n"), 0);
3272                         }
3273                         else {
3274                                 StrBufAppendBufPlain(LineBuf, HKEY("\n"), 0);
3275                         }
3276
3277                         /* Unescape SMTP-style input of two dots at the beginning of the line */
3278                         if ((dotdot) &&
3279                             (StrLength(LineBuf) == 2) &&
3280                             (!strcmp(ChrPtr(LineBuf), "..")))
3281                         {
3282                                 StrBufCutLeft(LineBuf, 1);
3283                         }
3284
3285                         StrBufAppendBuf(Message, LineBuf, 0);
3286                 }
3287
3288                 /* if we've hit the max msg length, flush the rest */
3289                 if (StrLength(Message) >= maxlen) flushing = 1;
3290
3291         } while (!finished);
3292         FreeStrBuf(&LineBuf);
3293         return Message;
3294 }
3295
3296
3297 /*
3298  * Back end function used by CtdlMakeMessage() and similar functions
3299  */
3300 char *CtdlReadMessageBody(char *terminator,     /* token signalling EOT */
3301                           long tlen,
3302                           size_t maxlen,                /* maximum message length */
3303                           char *exist,          /* if non-null, append to it;
3304                                                    exist is ALWAYS freed  */
3305                           int crlf,             /* CRLF newlines instead of LF */
3306                           int *sock             /* socket handle or 0 for this session's client socket */
3307         )
3308 {
3309         StrBuf *Message;
3310
3311         Message = CtdlReadMessageBodyBuf(terminator,
3312                                          tlen,
3313                                          maxlen,
3314                                          exist,
3315                                          crlf,
3316                                          sock);
3317         if (Message == NULL)
3318                 return NULL;
3319         else
3320                 return SmashStrBuf(&Message);
3321 }
3322
3323
3324 /*
3325  * Build a binary message to be saved on disk.
3326  * (NOTE: if you supply 'preformatted_text', the buffer you give it
3327  * will become part of the message.  This means you are no longer
3328  * responsible for managing that memory -- it will be freed along with
3329  * the rest of the fields when CtdlFreeMessage() is called.)
3330  */
3331
3332 struct CtdlMessage *CtdlMakeMessage(
3333         struct ctdluser *author,        /* author's user structure */
3334         char *recipient,                /* NULL if it's not mail */
3335         char *recp_cc,                  /* NULL if it's not mail */
3336         char *room,                     /* room where it's going */
3337         int type,                       /* see MES_ types in header file */
3338         int format_type,                /* variformat, plain text, MIME... */
3339         char *fake_name,                /* who we're masquerading as */
3340         char *my_email,                 /* which of my email addresses to use (empty is ok) */
3341         char *subject,                  /* Subject (optional) */
3342         char *supplied_euid,            /* ...or NULL if this is irrelevant */
3343         char *preformatted_text,        /* ...or NULL to read text from client */
3344         char *references                /* Thread references */
3345 ) {
3346         char dest_node[256];
3347         char buf[1024];
3348         struct CtdlMessage *msg;
3349
3350         msg = malloc(sizeof(struct CtdlMessage));
3351         memset(msg, 0, sizeof(struct CtdlMessage));
3352         msg->cm_magic = CTDLMESSAGE_MAGIC;
3353         msg->cm_anon_type = type;
3354         msg->cm_format_type = format_type;
3355
3356         /* Don't confuse the poor folks if it's not routed mail. */
3357         strcpy(dest_node, "");
3358
3359         if (recipient != NULL) striplt(recipient);
3360         if (recp_cc != NULL) striplt(recp_cc);
3361
3362         /* Path or Return-Path */
3363         if (my_email == NULL) my_email = "";
3364
3365         if (!IsEmptyStr(my_email)) {
3366                 msg->cm_fields['P'] = strdup(my_email);
3367         }
3368         else {
3369                 snprintf(buf, sizeof buf, "%s", author->fullname);
3370                 msg->cm_fields['P'] = strdup(buf);
3371         }
3372         convert_spaces_to_underscores(msg->cm_fields['P']);
3373
3374         snprintf(buf, sizeof buf, "%ld", (long)time(NULL));     /* timestamp */
3375         msg->cm_fields['T'] = strdup(buf);
3376
3377         if ((fake_name != NULL) && (fake_name[0])) {            /* author */
3378                 msg->cm_fields['A'] = strdup(fake_name);
3379         }
3380         else {
3381                 msg->cm_fields['A'] = strdup(author->fullname);
3382         }
3383
3384         if (CC->room.QRflags & QR_MAILBOX) {            /* room */
3385                 msg->cm_fields['O'] = strdup(&CC->room.QRname[11]);
3386         }
3387         else {
3388                 msg->cm_fields['O'] = strdup(CC->room.QRname);
3389         }
3390
3391         msg->cm_fields['N'] = strdup(NODENAME);         /* nodename */
3392         msg->cm_fields['H'] = strdup(HUMANNODE);                /* hnodename */
3393
3394         if ((recipient != NULL) && (recipient[0] != 0)) {
3395                 msg->cm_fields['R'] = strdup(recipient);
3396         }
3397         if ((recp_cc != NULL) && (recp_cc[0] != 0)) {
3398                 msg->cm_fields['Y'] = strdup(recp_cc);
3399         }
3400         if (dest_node[0] != 0) {
3401                 msg->cm_fields['D'] = strdup(dest_node);
3402         }
3403
3404         if (!IsEmptyStr(my_email)) {
3405                 msg->cm_fields['F'] = strdup(my_email);
3406         }
3407         else if ( (author == &CC->user) && (!IsEmptyStr(CC->cs_inet_email)) ) {
3408                 msg->cm_fields['F'] = strdup(CC->cs_inet_email);
3409         }
3410
3411         if (subject != NULL) {
3412                 long length;
3413                 striplt(subject);
3414                 length = strlen(subject);
3415                 if (length > 0) {
3416                         long i;
3417                         long IsAscii;
3418                         IsAscii = -1;
3419                         i = 0;
3420                         while ((subject[i] != '\0') &&
3421                                (IsAscii = isascii(subject[i]) != 0 ))
3422                                 i++;
3423                         if (IsAscii != 0)
3424                                 msg->cm_fields['U'] = strdup(subject);
3425                         else /* ok, we've got utf8 in the string. */
3426                         {
3427                                 msg->cm_fields['U'] = rfc2047encode(subject, length);
3428                         }
3429
3430                 }
3431         }
3432
3433         if (supplied_euid != NULL) {
3434                 msg->cm_fields['E'] = strdup(supplied_euid);
3435         }
3436
3437         if (references != NULL) {
3438                 if (!IsEmptyStr(references)) {
3439                         msg->cm_fields['W'] = strdup(references);
3440                 }
3441         }
3442
3443         if (preformatted_text != NULL) {
3444                 msg->cm_fields['M'] = preformatted_text;
3445         }
3446         else {
3447                 msg->cm_fields['M'] = CtdlReadMessageBody(HKEY("000"), config.c_maxmsglen, NULL, 0, 0);
3448         }
3449
3450         return(msg);
3451 }
3452
3453
3454 /*
3455  * Check to see whether we have permission to post a message in the current
3456  * room.  Returns a *CITADEL ERROR CODE* and puts a message in errmsgbuf, or
3457  * returns 0 on success.
3458  */
3459 int CtdlDoIHavePermissionToPostInThisRoom(char *errmsgbuf,
3460                                           size_t n,
3461                                           const char* RemoteIdentifier,
3462                                           int PostPublic) {
3463         int ra;
3464
3465         if (!(CC->logged_in) &&
3466             (PostPublic == POST_LOGGED_IN)) {
3467                 snprintf(errmsgbuf, n, "Not logged in.");
3468                 return (ERROR + NOT_LOGGED_IN);
3469         }
3470         else if (PostPublic == CHECK_EXISTANCE) {
3471                 return (0); // We're Evaling whether a recipient exists
3472         }
3473         else if (!(CC->logged_in)) {
3474
3475                 if ((CC->room.QRflags & QR_READONLY)) {
3476                         snprintf(errmsgbuf, n, "Not logged in.");
3477                         return (ERROR + NOT_LOGGED_IN);
3478                 }
3479                 if (CC->room.QRflags2 & QR2_MODERATED) {
3480                         snprintf(errmsgbuf, n, "Not logged in Moderation feature not yet implemented!");
3481                         return (ERROR + NOT_LOGGED_IN);
3482                 }
3483                 if ((PostPublic!=POST_LMTP) &&(CC->room.QRflags2 & QR2_SMTP_PUBLIC) == 0) {
3484                         SpoolControl *sc;
3485                         char filename[SIZ];
3486                         int found;
3487
3488                         if (RemoteIdentifier == NULL)
3489                         {
3490                                 snprintf(errmsgbuf, n, "Need sender to permit access.");
3491                                 return (ERROR + USERNAME_REQUIRED);
3492                         }
3493
3494                         assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
3495                         begin_critical_section(S_NETCONFIGS);
3496                         if (!read_spoolcontrol_file(&sc, filename))
3497                         {
3498                                 end_critical_section(S_NETCONFIGS);
3499                                 snprintf(errmsgbuf, n,
3500                                         "This mailing list only accepts posts from subscribers.");
3501                                 return (ERROR + NO_SUCH_USER);
3502                         }
3503                         end_critical_section(S_NETCONFIGS);
3504                         found = is_recipient (sc, RemoteIdentifier);
3505                         free_spoolcontrol_struct(&sc);
3506                         if (found) {
3507                                 return (0);
3508                         }
3509                         else {
3510                                 snprintf(errmsgbuf, n,
3511                                         "This mailing list only accepts posts from subscribers.");
3512                                 return (ERROR + NO_SUCH_USER);
3513                         }
3514                 }
3515                 return (0);
3516
3517         }
3518
3519         if ((CC->user.axlevel < AxProbU)
3520             && ((CC->room.QRflags & QR_MAILBOX) == 0)) {
3521                 snprintf(errmsgbuf, n, "Need to be validated to enter "
3522                                 "(except in %s> to sysop)", MAILROOM);
3523                 return (ERROR + HIGHER_ACCESS_REQUIRED);
3524         }
3525
3526         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
3527         if (!(ra & UA_POSTALLOWED)) {
3528                 snprintf(errmsgbuf, n, "Higher access is required to post in this room.");
3529                 return (ERROR + HIGHER_ACCESS_REQUIRED);
3530         }
3531
3532         strcpy(errmsgbuf, "Ok");
3533         return(0);
3534 }
3535
3536
3537 /*
3538  * Check to see if the specified user has Internet mail permission
3539  * (returns nonzero if permission is granted)
3540  */
3541 int CtdlCheckInternetMailPermission(struct ctdluser *who) {
3542
3543         /* Do not allow twits to send Internet mail */
3544         if (who->axlevel <= AxProbU) return(0);
3545
3546         /* Globally enabled? */
3547         if (config.c_restrict == 0) return(1);
3548
3549         /* User flagged ok? */
3550         if (who->flags & US_INTERNET) return(2);
3551
3552         /* Aide level access? */
3553         if (who->axlevel >= AxAideU) return(3);
3554
3555         /* No mail for you! */
3556         return(0);
3557 }
3558
3559
3560 /*
3561  * Validate recipients, count delivery types and errors, and handle aliasing
3562  * FIXME check for dupes!!!!!
3563  *
3564  * Returns 0 if all addresses are ok, ret->num_error = -1 if no addresses
3565  * were specified, or the number of addresses found invalid.
3566  *
3567  * Caller needs to free the result using free_recipients()
3568  */
3569 struct recptypes *validate_recipients(const char *supplied_recipients,
3570                                       const char *RemoteIdentifier,
3571                                       int Flags) {
3572         struct recptypes *ret;
3573         char *recipients = NULL;
3574         char this_recp[256];
3575         char this_recp_cooked[256];
3576         char append[SIZ];
3577         int num_recps = 0;
3578         int i, j;
3579         int mailtype;
3580         int invalid;
3581         struct ctdluser tempUS;
3582         struct ctdlroom tempQR;
3583         struct ctdlroom tempQR2;
3584         int err = 0;
3585         char errmsg[SIZ];
3586         int in_quotes = 0;
3587
3588         /* Initialize */
3589         ret = (struct recptypes *) malloc(sizeof(struct recptypes));
3590         if (ret == NULL) return(NULL);
3591
3592         /* Set all strings to null and numeric values to zero */
3593         memset(ret, 0, sizeof(struct recptypes));
3594
3595         if (supplied_recipients == NULL) {
3596                 recipients = strdup("");
3597         }
3598         else {
3599                 recipients = strdup(supplied_recipients);
3600         }
3601
3602         /* Allocate some memory.  Yes, this allocates 500% more memory than we will
3603          * actually need, but it's healthier for the heap than doing lots of tiny
3604          * realloc() calls instead.
3605          */
3606
3607         ret->errormsg = malloc(strlen(recipients) + 1024);
3608         ret->recp_local = malloc(strlen(recipients) + 1024);
3609         ret->recp_internet = malloc(strlen(recipients) + 1024);
3610         ret->recp_ignet = malloc(strlen(recipients) + 1024);
3611         ret->recp_room = malloc(strlen(recipients) + 1024);
3612         ret->display_recp = malloc(strlen(recipients) + 1024);
3613
3614         ret->errormsg[0] = 0;
3615         ret->recp_local[0] = 0;
3616         ret->recp_internet[0] = 0;
3617         ret->recp_ignet[0] = 0;
3618         ret->recp_room[0] = 0;
3619         ret->display_recp[0] = 0;
3620
3621         ret->recptypes_magic = RECPTYPES_MAGIC;
3622
3623         /* Change all valid separator characters to commas */
3624         for (i=0; !IsEmptyStr(&recipients[i]); ++i) {
3625                 if ((recipients[i] == ';') || (recipients[i] == '|')) {
3626                         recipients[i] = ',';
3627                 }
3628         }
3629
3630         /* Now start extracting recipients... */
3631
3632         while (!IsEmptyStr(recipients)) {
3633
3634                 for (i=0; i<=strlen(recipients); ++i) {
3635                         if (recipients[i] == '\"') in_quotes = 1 - in_quotes;
3636                         if ( ( (recipients[i] == ',') && (!in_quotes) ) || (recipients[i] == 0) ) {
3637                                 safestrncpy(this_recp, recipients, i+1);
3638                                 this_recp[i] = 0;
3639                                 if (recipients[i] == ',') {
3640                                         strcpy(recipients, &recipients[i+1]);
3641                                 }
3642                                 else {
3643                                         strcpy(recipients, "");
3644                                 }
3645                                 break;
3646                         }
3647                 }
3648
3649                 striplt(this_recp);
3650                 if (IsEmptyStr(this_recp))
3651                         break;
3652                 CtdlLogPrintf(CTDL_DEBUG, "Evaluating recipient #%d: %s\n", num_recps, this_recp);
3653                 ++num_recps;
3654                 mailtype = alias(this_recp);
3655                 mailtype = alias(this_recp);
3656                 mailtype = alias(this_recp);
3657                 j = 0;
3658                 for (j=0; !IsEmptyStr(&this_recp[j]); ++j) {
3659                         if (this_recp[j]=='_') {
3660                                 this_recp_cooked[j] = ' ';
3661                         }
3662                         else {
3663                                 this_recp_cooked[j] = this_recp[j];
3664                         }
3665                 }
3666                 this_recp_cooked[j] = '\0';
3667                 invalid = 0;
3668                 errmsg[0] = 0;
3669                 switch(mailtype) {
3670                         case MES_LOCAL:
3671                                 if (!strcasecmp(this_recp, "sysop")) {
3672                                         ++ret->num_room;
3673                                         strcpy(this_recp, config.c_aideroom);
3674                                         if (!IsEmptyStr(ret->recp_room)) {
3675                                                 strcat(ret->recp_room, "|");
3676                                         }
3677                                         strcat(ret->recp_room, this_recp);
3678                                 }
3679                                 else if ( (!strncasecmp(this_recp, "room_", 5))
3680                                       && (!CtdlGetRoom(&tempQR, &this_recp_cooked[5])) ) {
3681
3682                                         /* Save room so we can restore it later */
3683                                         tempQR2 = CC->room;
3684                                         CC->room = tempQR;
3685
3686                                         /* Check permissions to send mail to this room */
3687                                         err = CtdlDoIHavePermissionToPostInThisRoom(errmsg,
3688                                                                                     sizeof errmsg,
3689                                                                                     RemoteIdentifier,
3690                                                                                     Flags
3691                                         );
3692                                         if (err)
3693                                         {
3694                                                 ++ret->num_error;
3695                                                 invalid = 1;
3696                                         }
3697                                         else {
3698                                                 ++ret->num_room;
3699                                                 if (!IsEmptyStr(ret->recp_room)) {
3700                                                         strcat(ret->recp_room, "|");
3701                                                 }
3702                                                 strcat(ret->recp_room, &this_recp_cooked[5]);
3703                                         }
3704
3705                                         /* Restore room in case something needs it */
3706                                         CC->room = tempQR2;
3707
3708                                 }
3709                                 else if (CtdlGetUser(&tempUS, this_recp) == 0) {
3710                                         ++ret->num_local;
3711                                         strcpy(this_recp, tempUS.fullname);
3712                                         if (!IsEmptyStr(ret->recp_local)) {
3713                                                 strcat(ret->recp_local, "|");
3714                                         }
3715                                         strcat(ret->recp_local, this_recp);
3716                                 }
3717                                 else if (CtdlGetUser(&tempUS, this_recp_cooked) == 0) {
3718                                         ++ret->num_local;
3719                                         strcpy(this_recp, tempUS.fullname);
3720                                         if (!IsEmptyStr(ret->recp_local)) {
3721                                                 strcat(ret->recp_local, "|");
3722                                         }
3723                                         strcat(ret->recp_local, this_recp);
3724                                 }
3725                                 else {
3726                                         ++ret->num_error;
3727                                         invalid = 1;
3728                                 }
3729                                 break;
3730                         case MES_INTERNET:
3731                                 /* Yes, you're reading this correctly: if the target
3732                                  * domain points back to the local system or an attached
3733                                  * Citadel directory, the address is invalid.  That's
3734                                  * because if the address were valid, we would have
3735                                  * already translated it to a local address by now.
3736                                  */
3737                                 if (IsDirectory(this_recp, 0)) {
3738                                         ++ret->num_error;
3739                                         invalid = 1;
3740                                 }
3741                                 else {
3742                                         ++ret->num_internet;
3743                                         if (!IsEmptyStr(ret->recp_internet)) {
3744                                                 strcat(ret->recp_internet, "|");
3745                                         }
3746                                         strcat(ret->recp_internet, this_recp);
3747                                 }
3748                                 break;
3749                         case MES_IGNET:
3750                                 ++ret->num_ignet;
3751                                 if (!IsEmptyStr(ret->recp_ignet)) {
3752                                         strcat(ret->recp_ignet, "|");
3753                                 }
3754                                 strcat(ret->recp_ignet, this_recp);
3755                                 break;
3756                         case MES_ERROR:
3757                                 ++ret->num_error;
3758                                 invalid = 1;
3759                                 break;
3760                 }
3761                 if (invalid) {
3762                         if (IsEmptyStr(errmsg)) {
3763                                 snprintf(append, sizeof append, "Invalid recipient: %s", this_recp);
3764                         }
3765                         else {
3766                                 snprintf(append, sizeof append, "%s", errmsg);
3767                         }
3768                         if ( (strlen(ret->errormsg) + strlen(append) + 3) < SIZ) {
3769                                 if (!IsEmptyStr(ret->errormsg)) {
3770                                         strcat(ret->errormsg, "; ");
3771                                 }
3772                                 strcat(ret->errormsg, append);
3773                         }
3774                 }
3775                 else {
3776                         if (IsEmptyStr(ret->display_recp)) {
3777                                 strcpy(append, this_recp);
3778                         }
3779                         else {
3780                                 snprintf(append, sizeof append, ", %s", this_recp);
3781                         }
3782                         if ( (strlen(ret->display_recp)+strlen(append)) < SIZ) {
3783                                 strcat(ret->display_recp, append);
3784                         }
3785                 }
3786         }
3787
3788         if ((ret->num_local + ret->num_internet + ret->num_ignet +
3789            ret->num_room + ret->num_error) == 0) {
3790                 ret->num_error = (-1);
3791                 strcpy(ret->errormsg, "No recipients specified.");
3792         }
3793
3794         CtdlLogPrintf(CTDL_DEBUG, "validate_recipients()\n");
3795         CtdlLogPrintf(CTDL_DEBUG, " local: %d <%s>\n", ret->num_local, ret->recp_local);
3796         CtdlLogPrintf(CTDL_DEBUG, "  room: %d <%s>\n", ret->num_room, ret->recp_room);
3797         CtdlLogPrintf(CTDL_DEBUG, "  inet: %d <%s>\n", ret->num_internet, ret->recp_internet);
3798         CtdlLogPrintf(CTDL_DEBUG, " ignet: %d <%s>\n", ret->num_ignet, ret->recp_ignet);
3799         CtdlLogPrintf(CTDL_DEBUG, " error: %d <%s>\n", ret->num_error, ret->errormsg);
3800
3801         free(recipients);
3802         return(ret);
3803 }
3804
3805
3806 /*
3807  * Destructor for struct recptypes
3808  */
3809 void free_recipients(struct recptypes *valid) {
3810
3811         if (valid == NULL) {
3812                 return;
3813         }
3814
3815         if (valid->recptypes_magic != RECPTYPES_MAGIC) {
3816                 CtdlLogPrintf(CTDL_EMERG, "Attempt to call free_recipients() on some other data type!\n");
3817                 abort();
3818         }
3819
3820         if (valid->errormsg != NULL)            free(valid->errormsg);
3821         if (valid->recp_local != NULL)          free(valid->recp_local);
3822         if (valid->recp_internet != NULL)       free(valid->recp_internet);
3823         if (valid->recp_ignet != NULL)          free(valid->recp_ignet);
3824         if (valid->recp_room != NULL)           free(valid->recp_room);
3825         if (valid->display_recp != NULL)        free(valid->display_recp);
3826         if (valid->bounce_to != NULL)           free(valid->bounce_to);
3827         if (valid->envelope_from != NULL)       free(valid->envelope_from);
3828         free(valid);
3829 }
3830
3831
3832
3833 /*
3834  * message entry  -  mode 0 (normal)
3835  */
3836 void cmd_ent0(char *entargs)
3837 {
3838         int post = 0;
3839         char recp[SIZ];
3840         char cc[SIZ];
3841         char bcc[SIZ];
3842         char supplied_euid[128];
3843         int anon_flag = 0;
3844         int format_type = 0;
3845         char newusername[256];
3846         char newuseremail[256];
3847         struct CtdlMessage *msg;
3848         int anonymous = 0;
3849         char errmsg[SIZ];
3850         int err = 0;
3851         struct recptypes *valid = NULL;
3852         struct recptypes *valid_to = NULL;
3853         struct recptypes *valid_cc = NULL;
3854         struct recptypes *valid_bcc = NULL;
3855         char subject[SIZ];
3856         int subject_required = 0;
3857         int do_confirm = 0;
3858         long msgnum;
3859         int i, j;
3860         char buf[256];
3861         int newuseremail_ok = 0;
3862         char references[SIZ];
3863         char *ptr;
3864
3865         unbuffer_output();
3866
3867         post = extract_int(entargs, 0);
3868         extract_token(recp, entargs, 1, '|', sizeof recp);
3869         anon_flag = extract_int(entargs, 2);
3870         format_type = extract_int(entargs, 3);
3871         extract_token(subject, entargs, 4, '|', sizeof subject);
3872         extract_token(newusername, entargs, 5, '|', sizeof newusername);
3873         do_confirm = extract_int(entargs, 6);
3874         extract_token(cc, entargs, 7, '|', sizeof cc);
3875         extract_token(bcc, entargs, 8, '|', sizeof bcc);
3876         switch(CC->room.QRdefaultview) {
3877                 case VIEW_NOTES:
3878                 case VIEW_WIKI:
3879                         extract_token(supplied_euid, entargs, 9, '|', sizeof supplied_euid);
3880                         break;
3881                 default:
3882                         supplied_euid[0] = 0;
3883                         break;
3884         }
3885         extract_token(newuseremail, entargs, 10, '|', sizeof newuseremail);
3886         extract_token(references, entargs, 11, '|', sizeof references);
3887         for (ptr=references; *ptr != 0; ++ptr) {
3888                 if (*ptr == '!') *ptr = '|';
3889         }
3890
3891         /* first check to make sure the request is valid. */
3892
3893         err = CtdlDoIHavePermissionToPostInThisRoom(errmsg, sizeof errmsg, NULL, POST_LOGGED_IN);
3894         if (err)
3895         {
3896                 cprintf("%d %s\n", err, errmsg);
3897                 return;
3898         }
3899
3900         /* Check some other permission type things. */
3901
3902         if (IsEmptyStr(newusername)) {
3903                 strcpy(newusername, CC->user.fullname);
3904         }
3905         if (  (CC->user.axlevel < AxAideU)
3906            && (strcasecmp(newusername, CC->user.fullname))
3907            && (strcasecmp(newusername, CC->cs_inet_fn))
3908         ) {
3909                 cprintf("%d You don't have permission to author messages as '%s'.\n",
3910                         ERROR + HIGHER_ACCESS_REQUIRED,
3911                         newusername
3912                 );
3913                 return;
3914         }
3915
3916
3917         if (IsEmptyStr(newuseremail)) {
3918                 newuseremail_ok = 1;
3919         }
3920
3921         if (!IsEmptyStr(newuseremail)) {
3922                 if (!strcasecmp(newuseremail, CC->cs_inet_email)) {
3923                         newuseremail_ok = 1;
3924                 }
3925                 else if (!IsEmptyStr(CC->cs_inet_other_emails)) {
3926                         j = num_tokens(CC->cs_inet_other_emails, '|');
3927                         for (i=0; i<j; ++i) {
3928                                 extract_token(buf, CC->cs_inet_other_emails, i, '|', sizeof buf);
3929                                 if (!strcasecmp(newuseremail, buf)) {
3930                                         newuseremail_ok = 1;
3931                                 }
3932                         }
3933                 }
3934         }
3935
3936         if (!newuseremail_ok) {
3937                 cprintf("%d You don't have permission to author messages as '%s'.\n",
3938                         ERROR + HIGHER_ACCESS_REQUIRED,
3939                         newuseremail
3940                 );
3941                 return;
3942         }
3943
3944         CC->cs_flags |= CS_POSTING;
3945
3946         /* In mailbox rooms we have to behave a little differently --
3947          * make sure the user has specified at least one recipient.  Then
3948          * validate the recipient(s).  We do this for the Mail> room, as
3949          * well as any room which has the "Mailbox" view set.
3950          */
3951
3952         if (  ( (CC->room.QRflags & QR_MAILBOX) && (!strcasecmp(&CC->room.QRname[11], MAILROOM)) )
3953            || ( (CC->room.QRflags & QR_MAILBOX) && (CC->curr_view == VIEW_MAILBOX) )
3954         ) {
3955                 if (CC->user.axlevel < AxProbU) {
3956                         strcpy(recp, "sysop");
3957                         strcpy(cc, "");
3958                         strcpy(bcc, "");
3959                 }
3960
3961                 valid_to = validate_recipients(recp, NULL, 0);
3962                 if (valid_to->num_error > 0) {
3963                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_to->errormsg);
3964                         free_recipients(valid_to);
3965                         return;
3966                 }
3967
3968                 valid_cc = validate_recipients(cc, NULL, 0);
3969                 if (valid_cc->num_error > 0) {
3970                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_cc->errormsg);
3971                         free_recipients(valid_to);
3972                         free_recipients(valid_cc);
3973                         return;
3974                 }
3975
3976                 valid_bcc = validate_recipients(bcc, NULL, 0);
3977                 if (valid_bcc->num_error > 0) {
3978                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_bcc->errormsg);
3979                         free_recipients(valid_to);
3980                         free_recipients(valid_cc);
3981                         free_recipients(valid_bcc);
3982                         return;
3983                 }
3984
3985                 /* Recipient required, but none were specified */
3986                 if ( (valid_to->num_error < 0) && (valid_cc->num_error < 0) && (valid_bcc->num_error < 0) ) {
3987                         free_recipients(valid_to);
3988                         free_recipients(valid_cc);
3989                         free_recipients(valid_bcc);
3990                         cprintf("%d At least one recipient is required.\n", ERROR + NO_SUCH_USER);
3991                         return;
3992                 }
3993
3994                 if (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0) {
3995                         if (CtdlCheckInternetMailPermission(&CC->user)==0) {
3996                                 cprintf("%d You do not have permission "
3997                                         "to send Internet mail.\n",
3998                                         ERROR + HIGHER_ACCESS_REQUIRED);
3999                                 free_recipients(valid_to);
4000                                 free_recipients(valid_cc);
4001                                 free_recipients(valid_bcc);
4002                                 return;
4003                         }
4004                 }
4005
4006                 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)
4007                    && (CC->user.axlevel < AxNetU) ) {
4008                         cprintf("%d Higher access required for network mail.\n",
4009                                 ERROR + HIGHER_ACCESS_REQUIRED);
4010                         free_recipients(valid_to);
4011                         free_recipients(valid_cc);
4012                         free_recipients(valid_bcc);
4013                         return;
4014                 }
4015
4016                 if ((RESTRICT_INTERNET == 1)
4017                     && (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0)
4018                     && ((CC->user.flags & US_INTERNET) == 0)
4019                     && (!CC->internal_pgm)) {
4020                         cprintf("%d You don't have access to Internet mail.\n",
4021                                 ERROR + HIGHER_ACCESS_REQUIRED);
4022                         free_recipients(valid_to);
4023                         free_recipients(valid_cc);
4024                         free_recipients(valid_bcc);
4025                         return;
4026                 }
4027
4028         }
4029
4030         /* Is this a room which has anonymous-only or anonymous-option? */
4031         anonymous = MES_NORMAL;
4032         if (CC->room.QRflags & QR_ANONONLY) {
4033                 anonymous = MES_ANONONLY;
4034         }
4035         if (CC->room.QRflags & QR_ANONOPT) {
4036                 if (anon_flag == 1) {   /* only if the user requested it */
4037                         anonymous = MES_ANONOPT;
4038                 }
4039         }
4040
4041         if ((CC->room.QRflags & QR_MAILBOX) == 0) {
4042                 recp[0] = 0;
4043         }
4044
4045         /* Recommend to the client that the use of a message subject is
4046          * strongly recommended in this room, if either the SUBJECTREQ flag
4047          * is set, or if there is one or more Internet email recipients.
4048          */
4049         if (CC->room.QRflags2 & QR2_SUBJECTREQ) subject_required = 1;
4050         if ((valid_to)  && (valid_to->num_internet > 0))        subject_required = 1;
4051         if ((valid_cc)  && (valid_cc->num_internet > 0))        subject_required = 1;
4052         if ((valid_bcc) && (valid_bcc->num_internet > 0))       subject_required = 1;
4053
4054         /* If we're only checking the validity of the request, return
4055          * success without creating the message.
4056          */
4057         if (post == 0) {
4058                 cprintf("%d %s|%d\n", CIT_OK,
4059                         ((valid_to != NULL) ? valid_to->display_recp : ""),
4060                         subject_required);
4061                 free_recipients(valid_to);
4062                 free_recipients(valid_cc);
4063                 free_recipients(valid_bcc);
4064                 return;
4065         }
4066
4067         /* We don't need these anymore because we'll do it differently below */
4068         free_recipients(valid_to);
4069         free_recipients(valid_cc);
4070         free_recipients(valid_bcc);
4071
4072         /* Read in the message from the client. */
4073         if (do_confirm) {
4074                 cprintf("%d send message\n", START_CHAT_MODE);
4075         } else {
4076                 cprintf("%d send message\n", SEND_LISTING);
4077         }
4078
4079         msg = CtdlMakeMessage(&CC->user, recp, cc,
4080                 CC->room.QRname, anonymous, format_type,
4081                 newusername, newuseremail, subject,
4082                 ((!IsEmptyStr(supplied_euid)) ? supplied_euid : NULL),
4083                 NULL, references);
4084
4085         /* Put together one big recipients struct containing to/cc/bcc all in
4086          * one.  This is for the envelope.
4087          */
4088         char *all_recps = malloc(SIZ * 3);
4089         strcpy(all_recps, recp);
4090         if (!IsEmptyStr(cc)) {
4091                 if (!IsEmptyStr(all_recps)) {
4092                         strcat(all_recps, ",");
4093                 }
4094                 strcat(all_recps, cc);
4095         }
4096         if (!IsEmptyStr(bcc)) {
4097                 if (!IsEmptyStr(all_recps)) {
4098                         strcat(all_recps, ",");
4099                 }
4100                 strcat(all_recps, bcc);
4101         }
4102         if (!IsEmptyStr(all_recps)) {
4103                 valid = validate_recipients(all_recps, NULL, 0);
4104         }
4105         else {
4106                 valid = NULL;
4107         }
4108         free(all_recps);
4109
4110         if (msg != NULL) {
4111                 msgnum = CtdlSubmitMsg(msg, valid, "", QP_EADDR);
4112
4113                 if (do_confirm) {
4114                         cprintf("%ld\n", msgnum);
4115                         if (msgnum >= 0L) {
4116                                 cprintf("Message accepted.\n");
4117                         }
4118                         else {
4119                                 cprintf("Internal error.\n");
4120                         }
4121                         if (msg->cm_fields['E'] != NULL) {
4122                                 cprintf("%s\n", msg->cm_fields['E']);
4123                         } else {
4124                                 cprintf("\n");
4125                         }
4126                         cprintf("000\n");
4127                 }
4128
4129                 CtdlFreeMessage(msg);
4130         }
4131         if (valid != NULL) {
4132                 free_recipients(valid);
4133         }
4134         return;
4135 }
4136
4137
4138
4139 /*
4140  * API function to delete messages which match a set of criteria
4141  * (returns the actual number of messages deleted)
4142  */
4143 int CtdlDeleteMessages(char *room_name,         /* which room */
4144                         long *dmsgnums,         /* array of msg numbers to be deleted */
4145                         int num_dmsgnums,       /* number of msgs to be deleted, or 0 for "any" */
4146                         char *content_type      /* or "" for any.  regular expressions expected. */
4147 )
4148 {
4149         struct ctdlroom qrbuf;
4150         struct cdbdata *cdbfr;
4151         long *msglist = NULL;
4152         long *dellist = NULL;
4153         int num_msgs = 0;
4154         int i, j;
4155         int num_deleted = 0;
4156         int delete_this;
4157         struct MetaData smi;
4158         regex_t re;
4159         regmatch_t pm;
4160         int need_to_free_re = 0;
4161
4162         if (content_type) if (!IsEmptyStr(content_type)) {
4163                 regcomp(&re, content_type, 0);
4164                 need_to_free_re = 1;
4165         }
4166         CtdlLogPrintf(CTDL_DEBUG, "CtdlDeleteMessages(%s, %d msgs, %s)\n",
4167                 room_name, num_dmsgnums, content_type);
4168
4169         /* get room record, obtaining a lock... */
4170         if (CtdlGetRoomLock(&qrbuf, room_name) != 0) {
4171                 CtdlLogPrintf(CTDL_ERR, "CtdlDeleteMessages(): Room <%s> not found\n",
4172                         room_name);
4173                 if (need_to_free_re) regfree(&re);
4174                 return (0);     /* room not found */
4175         }
4176         cdbfr = cdb_fetch(CDB_MSGLISTS, &qrbuf.QRnumber, sizeof(long));
4177
4178         if (cdbfr != NULL) {
4179                 dellist = malloc(cdbfr->len);
4180                 msglist = (long *) cdbfr->ptr;
4181                 cdbfr->ptr = NULL;      /* CtdlDeleteMessages() now owns this memory */
4182                 num_msgs = cdbfr->len / sizeof(long);
4183                 cdb_free(cdbfr);
4184         }
4185         if (num_msgs > 0) {
4186                 for (i = 0; i < num_msgs; ++i) {
4187                         delete_this = 0x00;
4188
4189                         /* Set/clear a bit for each criterion */
4190
4191                         /* 0 messages in the list or a null list means that we are
4192                          * interested in deleting any messages which meet the other criteria.
4193                          */
4194                         if ((num_dmsgnums == 0) || (dmsgnums == NULL)) {
4195                                 delete_this |= 0x01;
4196                         }
4197                         else {
4198                                 for (j=0; j<num_dmsgnums; ++j) {
4199                                         if (msglist[i] == dmsgnums[j]) {
4200                                                 delete_this |= 0x01;
4201                                         }
4202                                 }
4203                         }
4204
4205                         if (IsEmptyStr(content_type)) {
4206                                 delete_this |= 0x02;
4207                         } else {
4208                                 GetMetaData(&smi, msglist[i]);
4209                                 if (regexec(&re, smi.meta_content_type, 1, &pm, 0) == 0) {
4210                                         delete_this |= 0x02;
4211                                 }
4212                         }
4213
4214                         /* Delete message only if all bits are set */
4215                         if (delete_this == 0x03) {
4216                                 dellist[num_deleted++] = msglist[i];
4217                                 msglist[i] = 0L;
4218                         }
4219                 }
4220
4221                 num_msgs = sort_msglist(msglist, num_msgs);
4222                 cdb_store(CDB_MSGLISTS, &qrbuf.QRnumber, (int)sizeof(long),
4223                           msglist, (int)(num_msgs * sizeof(long)));
4224
4225                 if (num_msgs > 0)
4226                         qrbuf.QRhighest = msglist[num_msgs - 1];
4227                 else
4228                         qrbuf.QRhighest = 0;
4229         }
4230         CtdlPutRoomLock(&qrbuf);
4231
4232         /* Go through the messages we pulled out of the index, and decrement
4233          * their reference counts by 1.  If this is the only room the message
4234          * was in, the reference count will reach zero and the message will
4235          * automatically be deleted from the database.  We do this in a
4236          * separate pass because there might be plug-in hooks getting called,
4237          * and we don't want that happening during an S_ROOMS critical
4238          * section.
4239          */
4240         if (num_deleted) for (i=0; i<num_deleted; ++i) {
4241                 PerformDeleteHooks(qrbuf.QRname, dellist[i]);
4242                 AdjRefCount(dellist[i], -1);
4243         }
4244
4245         /* Now free the memory we used, and go away. */
4246         if (msglist != NULL) free(msglist);
4247         if (dellist != NULL) free(dellist);
4248         CtdlLogPrintf(CTDL_DEBUG, "%d message(s) deleted.\n", num_deleted);
4249         if (need_to_free_re) regfree(&re);
4250         return (num_deleted);
4251 }
4252
4253
4254
4255 /*
4256  * Check whether the current user has permission to delete messages from
4257  * the current room (returns 1 for yes, 0 for no)
4258  */
4259 int CtdlDoIHavePermissionToDeleteMessagesFromThisRoom(void) {
4260         int ra;
4261         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
4262         if (ra & UA_DELETEALLOWED) return(1);
4263         return(0);
4264 }
4265
4266
4267
4268
4269 /*
4270  * Delete message from current room
4271  */
4272 void cmd_dele(char *args)
4273 {
4274         int num_deleted;
4275         int i;
4276         char msgset[SIZ];
4277         char msgtok[32];
4278         long *msgs;
4279         int num_msgs = 0;
4280
4281         extract_token(msgset, args, 0, '|', sizeof msgset);
4282         num_msgs = num_tokens(msgset, ',');
4283         if (num_msgs < 1) {
4284                 cprintf("%d Nothing to do.\n", CIT_OK);
4285                 return;
4286         }
4287
4288         if (CtdlDoIHavePermissionToDeleteMessagesFromThisRoom() == 0) {
4289                 cprintf("%d Higher access required.\n",
4290                         ERROR + HIGHER_ACCESS_REQUIRED);
4291                 return;
4292         }
4293
4294         /*
4295          * Build our message set to be moved/copied
4296          */
4297         msgs = malloc(num_msgs * sizeof(long));
4298         for (i=0; i<num_msgs; ++i) {
4299                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4300                 msgs[i] = atol(msgtok);
4301         }
4302
4303         num_deleted = CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4304         free(msgs);
4305
4306         if (num_deleted) {
4307                 cprintf("%d %d message%s deleted.\n", CIT_OK,
4308                         num_deleted, ((num_deleted != 1) ? "s" : ""));
4309         } else {
4310                 cprintf("%d Message not found.\n", ERROR + MESSAGE_NOT_FOUND);
4311         }
4312 }
4313
4314
4315
4316
4317 /*
4318  * move or copy a message to another room
4319  */
4320 void cmd_move(char *args)
4321 {
4322         char msgset[SIZ];
4323         char msgtok[32];
4324         long *msgs;
4325         int num_msgs = 0;
4326
4327         char targ[ROOMNAMELEN];
4328         struct ctdlroom qtemp;
4329         int err;
4330         int is_copy = 0;
4331         int ra;
4332         int permit = 0;
4333         int i;
4334
4335         extract_token(msgset, args, 0, '|', sizeof msgset);
4336         num_msgs = num_tokens(msgset, ',');
4337         if (num_msgs < 1) {
4338                 cprintf("%d Nothing to do.\n", CIT_OK);
4339                 return;
4340         }
4341
4342         extract_token(targ, args, 1, '|', sizeof targ);
4343         convert_room_name_macros(targ, sizeof targ);
4344         targ[ROOMNAMELEN - 1] = 0;
4345         is_copy = extract_int(args, 2);
4346
4347         if (CtdlGetRoom(&qtemp, targ) != 0) {
4348                 cprintf("%d '%s' does not exist.\n", ERROR + ROOM_NOT_FOUND, targ);
4349                 return;
4350         }
4351
4352         if (!strcasecmp(qtemp.QRname, CC->room.QRname)) {
4353                 cprintf("%d Source and target rooms are the same.\n", ERROR + ALREADY_EXISTS);
4354                 return;
4355         }
4356
4357         CtdlGetUser(&CC->user, CC->curr_user);
4358         CtdlRoomAccess(&qtemp, &CC->user, &ra, NULL);
4359
4360         /* Check for permission to perform this operation.
4361          * Remember: "CC->room" is source, "qtemp" is target.
4362          */
4363         permit = 0;
4364
4365         /* Aides can move/copy */
4366         if (CC->user.axlevel >= AxAideU) permit = 1;
4367
4368         /* Room aides can move/copy */
4369         if (CC->user.usernum == CC->room.QRroomaide) permit = 1;
4370
4371         /* Permit move/copy from personal rooms */
4372         if ((CC->room.QRflags & QR_MAILBOX)
4373            && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
4374
4375         /* Permit only copy from public to personal room */
4376         if ( (is_copy)
4377            && (!(CC->room.QRflags & QR_MAILBOX))
4378            && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
4379
4380         /* Permit message removal from collaborative delete rooms */
4381         if (CC->room.QRflags2 & QR2_COLLABDEL) permit = 1;
4382
4383         /* Users allowed to post into the target room may move into it too. */
4384         if ((CC->room.QRflags & QR_MAILBOX) &&
4385             (qtemp.QRflags & UA_POSTALLOWED))  permit = 1;
4386
4387         /* User must have access to target room */
4388         if (!(ra & UA_KNOWN))  permit = 0;
4389
4390         if (!permit) {
4391                 cprintf("%d Higher access required.\n",
4392                         ERROR + HIGHER_ACCESS_REQUIRED);
4393                 return;
4394         }
4395
4396         /*
4397          * Build our message set to be moved/copied
4398          */
4399         msgs = malloc(num_msgs * sizeof(long));
4400         for (i=0; i<num_msgs; ++i) {
4401                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4402                 msgs[i] = atol(msgtok);
4403         }
4404
4405         /*
4406          * Do the copy
4407          */
4408         err = CtdlSaveMsgPointersInRoom(targ, msgs, num_msgs, 1, NULL);
4409         if (err != 0) {
4410                 cprintf("%d Cannot store message(s) in %s: error %d\n",
4411                         err, targ, err);
4412                 free(msgs);
4413                 return;
4414         }
4415
4416         /* Now delete the message from the source room,
4417          * if this is a 'move' rather than a 'copy' operation.
4418          */
4419         if (is_copy == 0) {
4420                 CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4421         }
4422         free(msgs);
4423
4424         cprintf("%d Message(s) %s.\n", CIT_OK, (is_copy ? "copied" : "moved") );
4425 }
4426
4427
4428
4429 /*
4430  * GetMetaData()  -  Get the supplementary record for a message
4431  */
4432 void GetMetaData(struct MetaData *smibuf, long msgnum)
4433 {
4434
4435         struct cdbdata *cdbsmi;
4436         long TheIndex;
4437
4438         memset(smibuf, 0, sizeof(struct MetaData));
4439         smibuf->meta_msgnum = msgnum;
4440         smibuf->meta_refcount = 1;      /* Default reference count is 1 */
4441
4442         /* Use the negative of the message number for its supp record index */
4443         TheIndex = (0L - msgnum);
4444
4445         cdbsmi = cdb_fetch(CDB_MSGMAIN, &TheIndex, sizeof(long));
4446         if (cdbsmi == NULL) {
4447                 return;         /* record not found; go with defaults */
4448         }
4449         memcpy(smibuf, cdbsmi->ptr,
4450                ((cdbsmi->len > sizeof(struct MetaData)) ?
4451                 sizeof(struct MetaData) : cdbsmi->len));
4452         cdb_free(cdbsmi);
4453         return;
4454 }
4455
4456
4457 /*
4458  * PutMetaData()  -  (re)write supplementary record for a message
4459  */
4460 void PutMetaData(struct MetaData *smibuf)
4461 {
4462         long TheIndex;
4463
4464         /* Use the negative of the message number for the metadata db index */
4465         TheIndex = (0L - smibuf->meta_msgnum);
4466
4467         cdb_store(CDB_MSGMAIN,
4468                   &TheIndex, (int)sizeof(long),
4469                   smibuf, (int)sizeof(struct MetaData));
4470
4471 }
4472
4473 /*
4474  * AdjRefCount  -  submit an adjustment to the reference count for a message.
4475  *                 (These are just queued -- we actually process them later.)
4476  */
4477 void AdjRefCount(long msgnum, int incr)
4478 {
4479         struct arcq new_arcq;
4480         int rv = 0;
4481
4482         begin_critical_section(S_SUPPMSGMAIN);
4483         if (arcfp == NULL) {
4484                 arcfp = fopen(file_arcq, "ab+");
4485         }
4486         end_critical_section(S_SUPPMSGMAIN);
4487
4488         /* msgnum < 0 means that we're trying to close the file */
4489         if (msgnum < 0) {
4490                 CtdlLogPrintf(CTDL_DEBUG, "Closing the AdjRefCount queue file\n");
4491                 begin_critical_section(S_SUPPMSGMAIN);
4492                 if (arcfp != NULL) {
4493                         fclose(arcfp);
4494                         arcfp = NULL;
4495                 }
4496                 end_critical_section(S_SUPPMSGMAIN);
4497                 return;
4498         }
4499
4500         /*
4501          * If we can't open the queue, perform the operation synchronously.
4502          */
4503         if (arcfp == NULL) {
4504                 TDAP_AdjRefCount(msgnum, incr);
4505                 return;
4506         }
4507
4508         new_arcq.arcq_msgnum = msgnum;
4509         new_arcq.arcq_delta = incr;
4510         rv = fwrite(&new_arcq, sizeof(struct arcq), 1, arcfp);
4511         fflush(arcfp);
4512
4513         return;
4514 }
4515
4516
4517 /*
4518  * TDAP_ProcessAdjRefCountQueue()
4519  *
4520  * Process the queue of message count adjustments that was created by calls
4521  * to AdjRefCount() ... by reading the queue and calling TDAP_AdjRefCount()
4522  * for each one.  This should be an "off hours" operation.
4523  */
4524 int TDAP_ProcessAdjRefCountQueue(void)
4525 {
4526         char file_arcq_temp[PATH_MAX];
4527         int r;
4528         FILE *fp;
4529         struct arcq arcq_rec;
4530         int num_records_processed = 0;
4531
4532         snprintf(file_arcq_temp, sizeof file_arcq_temp, "%s.%04x", file_arcq, rand());
4533
4534         begin_critical_section(S_SUPPMSGMAIN);
4535         if (arcfp != NULL) {
4536                 fclose(arcfp);
4537                 arcfp = NULL;
4538         }
4539
4540         r = link(file_arcq, file_arcq_temp);
4541         if (r != 0) {
4542                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4543                 end_critical_section(S_SUPPMSGMAIN);
4544                 return(num_records_processed);
4545         }
4546
4547         unlink(file_arcq);
4548         end_critical_section(S_SUPPMSGMAIN);
4549
4550         fp = fopen(file_arcq_temp, "rb");
4551         if (fp == NULL) {
4552                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4553                 return(num_records_processed);
4554         }
4555
4556         while (fread(&arcq_rec, sizeof(struct arcq), 1, fp) == 1) {
4557                 TDAP_AdjRefCount(arcq_rec.arcq_msgnum, arcq_rec.arcq_delta);
4558                 ++num_records_processed;
4559         }
4560
4561         fclose(fp);
4562         r = unlink(file_arcq_temp);
4563         if (r != 0) {
4564                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4565         }
4566
4567         return(num_records_processed);
4568 }
4569
4570
4571
4572 /*
4573  * TDAP_AdjRefCount  -  adjust the reference count for a message.
4574  *                      This one does it "for real" because it's called by
4575  *                      the autopurger function that processes the queue
4576  *                      created by AdjRefCount().   If a message's reference
4577  *                      count becomes zero, we also delete the message from
4578  *                      disk and de-index it.
4579  */
4580 void TDAP_AdjRefCount(long msgnum, int incr)
4581 {
4582
4583         struct MetaData smi;
4584         long delnum;
4585
4586         /* This is a *tight* critical section; please keep it that way, as
4587          * it may get called while nested in other critical sections.
4588          * Complicating this any further will surely cause deadlock!
4589          */
4590         begin_critical_section(S_SUPPMSGMAIN);
4591         GetMetaData(&smi, msgnum);
4592         smi.meta_refcount += incr;
4593         PutMetaData(&smi);
4594         end_critical_section(S_SUPPMSGMAIN);
4595         CtdlLogPrintf(CTDL_DEBUG, "msg %ld ref count delta %+d, is now %d\n",
4596                 msgnum, incr, smi.meta_refcount);
4597
4598         /* If the reference count is now zero, delete the message
4599          * (and its supplementary record as well).
4600          */
4601         if (smi.meta_refcount == 0) {
4602                 CtdlLogPrintf(CTDL_DEBUG, "Deleting message <%ld>\n", msgnum);
4603
4604                 /* Call delete hooks with NULL room to show it has gone altogether */
4605                 PerformDeleteHooks(NULL, msgnum);
4606
4607                 /* Remove from message base */
4608                 delnum = msgnum;
4609                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
4610                 cdb_delete(CDB_BIGMSGS, &delnum, (int)sizeof(long));
4611
4612                 /* Remove metadata record */
4613                 delnum = (0L - msgnum);
4614                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
4615         }
4616
4617 }
4618
4619 /*
4620  * Write a generic object to this room
4621  *
4622  * Note: this could be much more efficient.  Right now we use two temporary
4623  * files, and still pull the message into memory as with all others.
4624  */
4625 void CtdlWriteObject(char *req_room,                    /* Room to stuff it in */
4626                         char *content_type,             /* MIME type of this object */
4627                         char *raw_message,              /* Data to be written */
4628                         off_t raw_length,               /* Size of raw_message */
4629                         struct ctdluser *is_mailbox,    /* Mailbox room? */
4630                         int is_binary,                  /* Is encoding necessary? */
4631                         int is_unique,                  /* Del others of this type? */
4632                         unsigned int flags              /* Internal save flags */
4633                         )
4634 {
4635
4636         struct ctdlroom qrbuf;
4637         char roomname[ROOMNAMELEN];
4638         struct CtdlMessage *msg;
4639         char *encoded_message = NULL;
4640
4641         if (is_mailbox != NULL) {
4642                 CtdlMailboxName(roomname, sizeof roomname, is_mailbox, req_room);
4643         }
4644         else {
4645                 safestrncpy(roomname, req_room, sizeof(roomname));
4646         }
4647
4648         CtdlLogPrintf(CTDL_DEBUG, "Raw length is %ld\n", (long)raw_length);
4649
4650         if (is_binary) {
4651                 encoded_message = malloc((size_t) (((raw_length * 134) / 100) + 4096 ) );
4652         }
4653         else {
4654                 encoded_message = malloc((size_t)(raw_length + 4096));
4655         }
4656
4657         sprintf(encoded_message, "Content-type: %s\n", content_type);
4658
4659         if (is_binary) {
4660                 sprintf(&encoded_message[strlen(encoded_message)],
4661                         "Content-transfer-encoding: base64\n\n"
4662                 );
4663         }
4664         else {
4665                 sprintf(&encoded_message[strlen(encoded_message)],
4666                         "Content-transfer-encoding: 7bit\n\n"
4667                 );
4668         }
4669
4670         if (is_binary) {
4671                 CtdlEncodeBase64(
4672                         &encoded_message[strlen(encoded_message)],
4673                         raw_message,
4674                         (int)raw_length,
4675                         0
4676                 );
4677         }
4678         else {
4679                 memcpy(
4680                         &encoded_message[strlen(encoded_message)],
4681                         raw_message,
4682                         (int)(raw_length+1)
4683                 );
4684         }
4685
4686         CtdlLogPrintf(CTDL_DEBUG, "Allocating\n");
4687         msg = malloc(sizeof(struct CtdlMessage));
4688         memset(msg, 0, sizeof(struct CtdlMessage));
4689         msg->cm_magic = CTDLMESSAGE_MAGIC;
4690         msg->cm_anon_type = MES_NORMAL;
4691         msg->cm_format_type = 4;
4692         msg->cm_fields['A'] = strdup(CC->user.fullname);
4693         msg->cm_fields['O'] = strdup(req_room);
4694         msg->cm_fields['N'] = strdup(config.c_nodename);
4695         msg->cm_fields['H'] = strdup(config.c_humannode);
4696         msg->cm_flags = flags;
4697
4698         msg->cm_fields['M'] = encoded_message;
4699
4700         /* Create the requested room if we have to. */
4701         if (CtdlGetRoom(&qrbuf, roomname) != 0) {
4702                 CtdlCreateRoom(roomname,
4703                         ( (is_mailbox != NULL) ? 5 : 3 ),
4704                         "", 0, 1, 0, VIEW_BBS);
4705         }
4706         /* If the caller specified this object as unique, delete all
4707          * other objects of this type that are currently in the room.
4708          */
4709         if (is_unique) {
4710                 CtdlLogPrintf(CTDL_DEBUG, "Deleted %d other msgs of this type\n",
4711                         CtdlDeleteMessages(roomname, NULL, 0, content_type)
4712                 );
4713         }
4714         /* Now write the data */
4715         CtdlSubmitMsg(msg, NULL, roomname, 0);
4716         CtdlFreeMessage(msg);
4717 }
4718
4719
4720
4721
4722
4723
4724 void CtdlGetSysConfigBackend(long msgnum, void *userdata) {
4725         config_msgnum = msgnum;
4726 }
4727
4728
4729 char *CtdlGetSysConfig(char *sysconfname) {
4730         char hold_rm[ROOMNAMELEN];
4731         long msgnum;
4732         char *conf;
4733         struct CtdlMessage *msg;
4734         char buf[SIZ];
4735
4736         strcpy(hold_rm, CC->room.QRname);
4737         if (CtdlGetRoom(&CC->room, SYSCONFIGROOM) != 0) {
4738                 CtdlGetRoom(&CC->room, hold_rm);
4739                 return NULL;
4740         }
4741
4742
4743         /* We want the last (and probably only) config in this room */
4744         begin_critical_section(S_CONFIG);
4745         config_msgnum = (-1L);
4746         CtdlForEachMessage(MSGS_LAST, 1, NULL, sysconfname, NULL,
4747                 CtdlGetSysConfigBackend, NULL);
4748         msgnum = config_msgnum;
4749         end_critical_section(S_CONFIG);
4750
4751         if (msgnum < 0L) {
4752                 conf = NULL;
4753         }
4754         else {
4755                 msg = CtdlFetchMessage(msgnum, 1);
4756                 if (msg != NULL) {
4757                         conf = strdup(msg->cm_fields['M']);
4758                         CtdlFreeMessage(msg);
4759                 }
4760                 else {
4761                         conf = NULL;
4762                 }
4763         }
4764
4765         CtdlGetRoom(&CC->room, hold_rm);
4766
4767         if (conf != NULL) do {
4768                 extract_token(buf, conf, 0, '\n', sizeof buf);
4769                 strcpy(conf, &conf[strlen(buf)+1]);
4770         } while ( (!IsEmptyStr(conf)) && (!IsEmptyStr(buf)) );
4771
4772         return(conf);
4773 }
4774
4775
4776 void CtdlPutSysConfig(char *sysconfname, char *sysconfdata) {
4777         CtdlWriteObject(SYSCONFIGROOM, sysconfname, sysconfdata, (strlen(sysconfdata)+1), NULL, 0, 1, 0);
4778 }
4779
4780
4781 /*
4782  * Determine whether a given Internet address belongs to the current user
4783  */
4784 int CtdlIsMe(char *addr, int addr_buf_len)
4785 {
4786         struct recptypes *recp;
4787         int i;
4788
4789         recp = validate_recipients(addr, NULL, 0);
4790         if (recp == NULL) return(0);
4791
4792         if (recp->num_local == 0) {
4793                 free_recipients(recp);
4794                 return(0);
4795         }
4796
4797         for (i=0; i<recp->num_local; ++i) {
4798                 extract_token(addr, recp->recp_local, i, '|', addr_buf_len);
4799                 if (!strcasecmp(addr, CC->user.fullname)) {
4800                         free_recipients(recp);
4801                         return(1);
4802                 }
4803         }
4804
4805         free_recipients(recp);
4806         return(0);
4807 }
4808
4809
4810 /*
4811  * Citadel protocol command to do the same
4812  */
4813 void cmd_isme(char *argbuf) {
4814         char addr[256];
4815
4816         if (CtdlAccessCheck(ac_logged_in)) return;
4817         extract_token(addr, argbuf, 0, '|', sizeof addr);
4818
4819         if (CtdlIsMe(addr, sizeof addr)) {
4820                 cprintf("%d %s\n", CIT_OK, addr);
4821         }
4822         else {
4823                 cprintf("%d Not you.\n", ERROR + ILLEGAL_VALUE);
4824         }
4825
4826 }
4827
4828
4829 /*****************************************************************************/
4830 /*                      MODULE INITIALIZATION STUFF                          */
4831 /*****************************************************************************/
4832
4833 CTDL_MODULE_INIT(msgbase)
4834 {
4835         if (!threading) {
4836                 CtdlRegisterProtoHook(cmd_msgs, "MSGS", "Output a list of messages in the current room");
4837                 CtdlRegisterProtoHook(cmd_msg0, "MSG0", "Output a message in plain text format");
4838                 CtdlRegisterProtoHook(cmd_msg2, "MSG2", "Output a message in RFC822 format");
4839                 CtdlRegisterProtoHook(cmd_msg3, "MSG3", "Output a message in raw format (deprecated)");
4840                 CtdlRegisterProtoHook(cmd_msg4, "MSG4", "Output a message in the client's preferred format");
4841                 CtdlRegisterProtoHook(cmd_msgp, "MSGP", "Select preferred format for MSG4 output");
4842                 CtdlRegisterProtoHook(cmd_opna, "OPNA", "Open an attachment for download");
4843                 CtdlRegisterProtoHook(cmd_dlat, "DLAT", "Download an attachment");
4844                 CtdlRegisterProtoHook(cmd_ent0, "ENT0", "Enter a message");
4845                 CtdlRegisterProtoHook(cmd_dele, "DELE", "Delete a message");
4846                 CtdlRegisterProtoHook(cmd_move, "MOVE", "Move or copy a message to another room");
4847                 CtdlRegisterProtoHook(cmd_isme, "ISME", "Determine whether an email address belongs to a user");
4848         }
4849
4850         /* return our Subversion id for the Log */
4851         return "$Id$";
4852 }