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