citadel/msgbase.c

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