citadel/msgbase.c

   1 /*
   2  * Implements the message store.
   3  *
   4  * Copyright (c) 1987-2012 by the citadel.org team
   5  *
   6  * This program is open source software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 3.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include "sysdep.h"
  16 #include <stdlib.h>
  17 #include <unistd.h>
  18 #include <stdio.h>
  19 #include <fcntl.h>
  20
  21 #if TIME_WITH_SYS_TIME
  22 # include <sys/time.h>
  23 # include <time.h>
  24 #else
  25 # if HAVE_SYS_TIME_H
  26 #  include <sys/time.h>
  27 # else
  28 #  include <time.h>
  29 # endif
  30 #endif
  31
  32
  33 #include <ctype.h>
  34 #include <string.h>
  35 #include <limits.h>
  36 #include <errno.h>
  37 #include <stdarg.h>
  38 #include <sys/stat.h>
  39 #include <sys/types.h>
  40 #include <regex.h>
  41 #include <libcitadel.h>
  42 #include "citadel.h"
  43 #include "server.h"
  44 #include "serv_extensions.h"
  45 #include "database.h"
  46 #include "msgbase.h"
  47 #include "support.h"
  48 #include "sysdep_decls.h"
  49 #include "citserver.h"
  50 #include "room_ops.h"
  51 #include "user_ops.h"
  52 #include "file_ops.h"
  53 #include "config.h"
  54 #include "control.h"
  55 #include "genstamp.h"
  56 #include "internet_addressing.h"
  57 #include "euidindex.h"
  58 #include "journaling.h"
  59 #include "citadel_dirs.h"
  60 #include "clientsocket.h"
  61 #include "threads.h"
  62
  63 #include "ctdl_module.h"
  64
  65 long config_msgnum;
  66 struct addresses_to_be_filed *atbf = NULL;
  67
  68 /* This temp file holds the queue of operations for AdjRefCount() */
  69 static FILE *arcfp = NULL;
  70 void AdjRefCountList(long *msgnum, long nmsg, int incr);
  71
  72 int MessageDebugEnabled = 0;
  73
  74 /*
  75  * These are the four-character field headers we use when outputting
  76  * messages in Citadel format (as opposed to RFC822 format).
  77  */
  78 char *msgkeys[] = {
  79         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  80         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  81         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  82         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  83         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  84         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  85         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  86         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  87         NULL,
  88         "from",
  89         NULL, NULL, NULL,
  90         "exti",
  91         "rfca",
  92         NULL,
  93         "hnod",
  94         "msgn",
  95         "jrnl",
  96         "rep2",
  97         "list",
  98         "text",
  99         "node",
 100         "room",
 101         "path",
 102         NULL,
 103         "rcpt",
 104         "spec",
 105         "time",
 106         "subj",
 107         NULL,
 108         "wefw",
 109         NULL,
 110         "cccc",
 111         NULL
 112 };
 113
 114 /*
 115  * This function is self explanatory.
 116  * (What can I say, I'm in a weird mood today...)
 117  */
 118 void remove_any_whitespace_to_the_left_or_right_of_at_symbol(char *name)
 119 {
 120         int i;
 121
 122         for (i = 0; i < strlen(name); ++i) {
 123                 if (name[i] == '@') {
 124                         while (isspace(name[i - 1]) && i > 0) {
 125                                 strcpy(&name[i - 1], &name[i]);
 126                                 --i;
 127                         }
 128                         while (isspace(name[i + 1])) {
 129                                 strcpy(&name[i + 1], &name[i + 2]);
 130                         }
 131                 }
 132         }
 133 }
 134
 135
 136 /*
 137  * Aliasing for network mail.
 138  * (Error messages have been commented out, because this is a server.)
 139  */
 140 int alias(char *name)
 141 {                               /* process alias and routing info for mail */
 142         struct CitContext *CCC = CC;
 143         FILE *fp;
 144         int a, i;
 145         char aaa[SIZ], bbb[SIZ];
 146         char *ignetcfg = NULL;
 147         char *ignetmap = NULL;
 148         int at = 0;
 149         char node[64];
 150         char testnode[64];
 151         char buf[SIZ];
 152
 153         char original_name[256];
 154         safestrncpy(original_name, name, sizeof original_name);
 155
 156         striplt(name);
 157         remove_any_whitespace_to_the_left_or_right_of_at_symbol(name);
 158         stripallbut(name, '<', '>');
 159
 160         fp = fopen(file_mail_aliases, "r");
 161         if (fp == NULL) {
 162                 fp = fopen("/dev/null", "r");
 163         }
 164         if (fp == NULL) {
 165                 return (MES_ERROR);
 166         }
 167         strcpy(aaa, "");
 168         strcpy(bbb, "");
 169         while (fgets(aaa, sizeof aaa, fp) != NULL) {
 170                 while (isspace(name[0]))
 171                         strcpy(name, &name[1]);
 172                 aaa[strlen(aaa) - 1] = 0;
 173                 strcpy(bbb, "");
 174                 for (a = 0; a < strlen(aaa); ++a) {
 175                         if (aaa[a] == ',') {
 176                                 strcpy(bbb, &aaa[a + 1]);
 177                                 aaa[a] = 0;
 178                         }
 179                 }
 180                 if (!strcasecmp(name, aaa))
 181                         strcpy(name, bbb);
 182         }
 183         fclose(fp);
 184
 185         /* Hit the Global Address Book */
 186         if (CtdlDirectoryLookup(aaa, name, sizeof aaa) == 0) {
 187                 strcpy(name, aaa);
 188         }
 189
 190         if (strcasecmp(original_name, name)) {
 191                 MSG_syslog(LOG_INFO, "%s is being forwarded to %s\n", original_name, name);
 192         }
 193
 194         /* Change "user @ xxx" to "user" if xxx is an alias for this host */
 195         for (a=0; a<strlen(name); ++a) {
 196                 if (name[a] == '@') {
 197                         if (CtdlHostAlias(&name[a+1]) == hostalias_localhost) {
 198                                 name[a] = 0;
 199                                 MSG_syslog(LOG_INFO, "Changed to <%s>\n", name);
 200                         }
 201                 }
 202         }
 203
 204         /* determine local or remote type, see citadel.h */
 205         at = haschar(name, '@');
 206         if (at == 0) return(MES_LOCAL);         /* no @'s - local address */
 207         if (at > 1) return(MES_ERROR);          /* >1 @'s - invalid address */
 208         remove_any_whitespace_to_the_left_or_right_of_at_symbol(name);
 209
 210         /* figure out the delivery mode */
 211         extract_token(node, name, 1, '@', sizeof node);
 212
 213         /* If there are one or more dots in the nodename, we assume that it
 214          * is an FQDN and will attempt SMTP delivery to the Internet.
 215          */
 216         if (haschar(node, '.') > 0) {
 217                 return(MES_INTERNET);
 218         }
 219
 220         /* Otherwise we look in the IGnet maps for a valid Citadel node.
 221          * Try directly-connected nodes first...
 222          */
 223         ignetcfg = CtdlGetSysConfig(IGNETCFG);
 224         for (i=0; i<num_tokens(ignetcfg, '\n'); ++i) {
 225                 extract_token(buf, ignetcfg, i, '\n', sizeof buf);
 226                 extract_token(testnode, buf, 0, '|', sizeof testnode);
 227                 if (!strcasecmp(node, testnode)) {
 228                         free(ignetcfg);
 229                         return(MES_IGNET);
 230                 }
 231         }
 232         free(ignetcfg);
 233
 234         /*
 235          * Then try nodes that are two or more hops away.
 236          */
 237         ignetmap = CtdlGetSysConfig(IGNETMAP);
 238         for (i=0; i<num_tokens(ignetmap, '\n'); ++i) {
 239                 extract_token(buf, ignetmap, i, '\n', sizeof buf);
 240                 extract_token(testnode, buf, 0, '|', sizeof testnode);
 241                 if (!strcasecmp(node, testnode)) {
 242                         free(ignetmap);
 243                         return(MES_IGNET);
 244                 }
 245         }
 246         free(ignetmap);
 247
 248         /* If we get to this point it's an invalid node name */
 249         return (MES_ERROR);
 250 }
 251
 252
 253 /*
 254  * Back end for the MSGS command: output message number only.
 255  */
 256 void simple_listing(long msgnum, void *userdata)
 257 {
 258         cprintf("%ld\n", msgnum);
 259 }
 260
 261
 262
 263 /*
 264  * Back end for the MSGS command: output header summary.
 265  */
 266 void headers_listing(long msgnum, void *userdata)
 267 {
 268         struct CtdlMessage *msg;
 269
 270         msg = CtdlFetchMessage(msgnum, 0);
 271         if (msg == NULL) {
 272                 cprintf("%ld|0|||||\n", msgnum);
 273                 return;
 274         }
 275
 276         cprintf("%ld|%s|%s|%s|%s|%s|\n",
 277                 msgnum,
 278                 (msg->cm_fields['T'] ? msg->cm_fields['T'] : "0"),
 279                 (msg->cm_fields['A'] ? msg->cm_fields['A'] : ""),
 280                 (msg->cm_fields['N'] ? msg->cm_fields['N'] : ""),
 281                 (msg->cm_fields['F'] ? msg->cm_fields['F'] : ""),
 282                 (msg->cm_fields['U'] ? msg->cm_fields['U'] : "")
 283         );
 284         CtdlFreeMessage(msg);
 285 }
 286
 287 /*
 288  * Back end for the MSGS command: output EUID header.
 289  */
 290 void headers_euid(long msgnum, void *userdata)
 291 {
 292         struct CtdlMessage *msg;
 293
 294         msg = CtdlFetchMessage(msgnum, 0);
 295         if (msg == NULL) {
 296                 cprintf("%ld||\n", msgnum);
 297                 return;
 298         }
 299
 300         cprintf("%ld|%s|%s\n",
 301                 msgnum,
 302                 (msg->cm_fields['E'] ? msg->cm_fields['E'] : ""),
 303                 (msg->cm_fields['T'] ? msg->cm_fields['T'] : "0"));
 304         CtdlFreeMessage(msg);
 305 }
 306
 307
 308
 309
 310
 311 /* Determine if a given message matches the fields in a message template.
 312  * Return 0 for a successful match.
 313  */
 314 int CtdlMsgCmp(struct CtdlMessage *msg, struct CtdlMessage *template) {
 315         int i;
 316
 317         /* If there aren't any fields in the template, all messages will
 318          * match.
 319          */
 320         if (template == NULL) return(0);
 321
 322         /* Null messages are bogus. */
 323         if (msg == NULL) return(1);
 324
 325         for (i='A'; i<='Z'; ++i) {
 326                 if (template->cm_fields[i] != NULL) {
 327                         if (msg->cm_fields[i] == NULL) {
 328                                 /* Considered equal if temmplate is empty string */
 329                                 if (IsEmptyStr(template->cm_fields[i])) continue;
 330                                 return 1;
 331                         }
 332                         if (strcasecmp(msg->cm_fields[i],
 333                                 template->cm_fields[i])) return 1;
 334                 }
 335         }
 336
 337         /* All compares succeeded: we have a match! */
 338         return 0;
 339 }
 340
 341
 342
 343 /*
 344  * Retrieve the "seen" message list for the current room.
 345  */
 346 void CtdlGetSeen(char *buf, int which_set) {
 347         struct CitContext *CCC = CC;
 348         visit vbuf;
 349
 350         /* Learn about the user and room in question */
 351         CtdlGetRelationship(&vbuf, &CCC->user, &CCC->room);
 352
 353         if (which_set == ctdlsetseen_seen)
 354                 safestrncpy(buf, vbuf.v_seen, SIZ);
 355         if (which_set == ctdlsetseen_answered)
 356                 safestrncpy(buf, vbuf.v_answered, SIZ);
 357 }
 358
 359
 360
 361 /*
 362  * Manipulate the "seen msgs" string (or other message set strings)
 363  */
 364 void CtdlSetSeen(long *target_msgnums, int num_target_msgnums,
 365                 int target_setting, int which_set,
 366                 struct ctdluser *which_user, struct ctdlroom *which_room) {
 367         struct CitContext *CCC = CC;
 368         struct cdbdata *cdbfr;
 369         int i, k;
 370         int is_seen = 0;
 371         int was_seen = 0;
 372         long lo = (-1L);
 373         long hi = (-1L); /// TODO: we just write here. y?
 374         visit vbuf;
 375         long *msglist;
 376         int num_msgs = 0;
 377         StrBuf *vset;
 378         StrBuf *setstr;
 379         StrBuf *lostr;
 380         StrBuf *histr;
 381         const char *pvset;
 382         char *is_set;   /* actually an array of booleans */
 383
 384         /* Don't bother doing *anything* if we were passed a list of zero messages */
 385         if (num_target_msgnums < 1) {
 386                 return;
 387         }
 388
 389         /* If no room was specified, we go with the current room. */
 390         if (!which_room) {
 391                 which_room = &CCC->room;
 392         }
 393
 394         /* If no user was specified, we go with the current user. */
 395         if (!which_user) {
 396                 which_user = &CCC->user;
 397         }
 398
 399         MSG_syslog(LOG_DEBUG, "CtdlSetSeen(%d msgs starting with %ld, %s, %d) in <%s>\n",
 400                    num_target_msgnums, target_msgnums[0],
 401                    (target_setting ? "SET" : "CLEAR"),
 402                    which_set,
 403                    which_room->QRname);
 404
 405         /* Learn about the user and room in question */
 406         CtdlGetRelationship(&vbuf, which_user, which_room);
 407
 408         /* Load the message list */
 409         cdbfr = cdb_fetch(CDB_MSGLISTS, &which_room->QRnumber, sizeof(long));
 410         if (cdbfr != NULL) {
 411                 msglist = (long *) cdbfr->ptr;
 412                 cdbfr->ptr = NULL;      /* CtdlSetSeen() now owns this memory */
 413                 num_msgs = cdbfr->len / sizeof(long);
 414                 cdb_free(cdbfr);
 415         } else {
 416                 return; /* No messages at all?  No further action. */
 417         }
 418
 419         is_set = malloc(num_msgs * sizeof(char));
 420         memset(is_set, 0, (num_msgs * sizeof(char)) );
 421
 422         /* Decide which message set we're manipulating */
 423         switch(which_set) {
 424         case ctdlsetseen_seen:
 425                 vset = NewStrBufPlain(vbuf.v_seen, -1);
 426                 break;
 427         case ctdlsetseen_answered:
 428                 vset = NewStrBufPlain(vbuf.v_answered, -1);
 429                 break;
 430         default:
 431                 vset = NewStrBuf();
 432         }
 433
 434
 435 #if 0   /* This is a special diagnostic section.  Do not allow it to run during normal operation. */
 436         MSG_syslog(LOG_DEBUG, "There are %d messages in the room.\n", num_msgs);
 437         for (i=0; i<num_msgs; ++i) {
 438                 if ((i > 0) && (msglist[i] <= msglist[i-1])) abort();
 439         }
 440         MSG_syslog(LOG_DEBUG, "We are twiddling %d of them.\n", num_target_msgnums);
 441         for (k=0; k<num_target_msgnums; ++k) {
 442                 if ((k > 0) && (target_msgnums[k] <= target_msgnums[k-1])) abort();
 443         }
 444 #endif
 445
 446         MSG_syslog(LOG_DEBUG, "before update: %s\n", ChrPtr(vset));
 447
 448         /* Translate the existing sequence set into an array of booleans */
 449         setstr = NewStrBuf();
 450         lostr = NewStrBuf();
 451         histr = NewStrBuf();
 452         pvset = NULL;
 453         while (StrBufExtract_NextToken(setstr, vset, &pvset, ',') >= 0) {
 454
 455                 StrBufExtract_token(lostr, setstr, 0, ':');
 456                 if (StrBufNum_tokens(setstr, ':') >= 2) {
 457                         StrBufExtract_token(histr, setstr, 1, ':');
 458                 }
 459                 else {
 460                         FlushStrBuf(histr);
 461                         StrBufAppendBuf(histr, lostr, 0);
 462                 }
 463                 lo = StrTol(lostr);
 464                 if (!strcmp(ChrPtr(histr), "*")) {
 465                         hi = LONG_MAX;
 466                 }
 467                 else {
 468                         hi = StrTol(histr);
 469                 }
 470
 471                 for (i = 0; i < num_msgs; ++i) {
 472                         if ((msglist[i] >= lo) && (msglist[i] <= hi)) {
 473                                 is_set[i] = 1;
 474                         }
 475                 }
 476         }
 477         FreeStrBuf(&setstr);
 478         FreeStrBuf(&lostr);
 479         FreeStrBuf(&histr);
 480
 481
 482         /* Now translate the array of booleans back into a sequence set */
 483         FlushStrBuf(vset);
 484         was_seen = 0;
 485         lo = (-1);
 486         hi = (-1);
 487
 488         for (i=0; i<num_msgs; ++i) {
 489                 is_seen = is_set[i];
 490
 491                 /* Apply changes */
 492                 for (k=0; k<num_target_msgnums; ++k) {
 493                         if (msglist[i] == target_msgnums[k]) {
 494                                 is_seen = target_setting;
 495                         }
 496                 }
 497
 498                 if ((was_seen == 0) && (is_seen == 1)) {
 499                         lo = msglist[i];
 500                 }
 501                 else if ((was_seen == 1) && (is_seen == 0)) {
 502                         hi = msglist[i-1];
 503
 504                         if (StrLength(vset) > 0) {
 505                                 StrBufAppendBufPlain(vset, HKEY(","), 0);
 506                         }
 507                         if (lo == hi) {
 508                                 StrBufAppendPrintf(vset, "%ld", hi);
 509                         }
 510                         else {
 511                                 StrBufAppendPrintf(vset, "%ld:%ld", lo, hi);
 512                         }
 513                 }
 514
 515                 if ((is_seen) && (i == num_msgs - 1)) {
 516                         if (StrLength(vset) > 0) {
 517                                 StrBufAppendBufPlain(vset, HKEY(","), 0);
 518                         }
 519                         if ((i==0) || (was_seen == 0)) {
 520                                 StrBufAppendPrintf(vset, "%ld", msglist[i]);
 521                         }
 522                         else {
 523                                 StrBufAppendPrintf(vset, "%ld:%ld", lo, msglist[i]);
 524                         }
 525                 }
 526
 527                 was_seen = is_seen;
 528         }
 529
 530         /*
 531          * We will have to stuff this string back into a 4096 byte buffer, so if it's
 532          * larger than that now, truncate it by removing tokens from the beginning.
 533          * The limit of 100 iterations is there to prevent an infinite loop in case
 534          * something unexpected happens.
 535          */
 536         int number_of_truncations = 0;
 537         while ( (StrLength(vset) > SIZ) && (number_of_truncations < 100) ) {
 538                 StrBufRemove_token(vset, 0, ',');
 539                 ++number_of_truncations;
 540         }
 541
 542         /*
 543          * If we're truncating the sequence set of messages marked with the 'seen' flag,
 544          * we want the earliest messages (the truncated ones) to be marked, not unmarked.
 545          * Otherwise messages at the beginning will suddenly appear to be 'unseen'.
 546          */
 547         if ( (which_set == ctdlsetseen_seen) && (number_of_truncations > 0) ) {
 548                 StrBuf *first_tok;
 549                 first_tok = NewStrBuf();
 550                 StrBufExtract_token(first_tok, vset, 0, ',');
 551                 StrBufRemove_token(vset, 0, ',');
 552
 553                 if (StrBufNum_tokens(first_tok, ':') > 1) {
 554                         StrBufRemove_token(first_tok, 0, ':');
 555                 }
 556
 557                 StrBuf *new_set;
 558                 new_set = NewStrBuf();
 559                 StrBufAppendBufPlain(new_set, HKEY("1:"), 0);
 560                 StrBufAppendBuf(new_set, first_tok, 0);
 561                 StrBufAppendBufPlain(new_set, HKEY(":"), 0);
 562                 StrBufAppendBuf(new_set, vset, 0);
 563
 564                 FreeStrBuf(&vset);
 565                 FreeStrBuf(&first_tok);
 566                 vset = new_set;
 567         }
 568
 569         MSG_syslog(LOG_DEBUG, " after update: %s\n", ChrPtr(vset));
 570
 571         /* Decide which message set we're manipulating */
 572         switch (which_set) {
 573                 case ctdlsetseen_seen:
 574                         safestrncpy(vbuf.v_seen, ChrPtr(vset), sizeof vbuf.v_seen);
 575                         break;
 576                 case ctdlsetseen_answered:
 577                         safestrncpy(vbuf.v_answered, ChrPtr(vset), sizeof vbuf.v_answered);
 578                         break;
 579         }
 580
 581         free(is_set);
 582         free(msglist);
 583         CtdlSetRelationship(&vbuf, which_user, which_room);
 584         FreeStrBuf(&vset);
 585 }
 586
 587
 588 /*
 589  * API function to perform an operation for each qualifying message in the
 590  * current room.  (Returns the number of messages processed.)
 591  */
 592 int CtdlForEachMessage(int mode, long ref, char *search_string,
 593                         char *content_type,
 594                         struct CtdlMessage *compare,
 595                         ForEachMsgCallback CallBack,
 596                         void *userdata)
 597 {
 598         struct CitContext *CCC = CC;
 599         int a, i, j;
 600         visit vbuf;
 601         struct cdbdata *cdbfr;
 602         long *msglist = NULL;
 603         int num_msgs = 0;
 604         int num_processed = 0;
 605         long thismsg;
 606         struct MetaData smi;
 607         struct CtdlMessage *msg = NULL;
 608         int is_seen = 0;
 609         long lastold = 0L;
 610         int printed_lastold = 0;
 611         int num_search_msgs = 0;
 612         long *search_msgs = NULL;
 613         regex_t re;
 614         int need_to_free_re = 0;
 615         regmatch_t pm;
 616
 617         if ((content_type) && (!IsEmptyStr(content_type))) {
 618                 regcomp(&re, content_type, 0);
 619                 need_to_free_re = 1;
 620         }
 621
 622         /* Learn about the user and room in question */
 623         if (server_shutting_down) {
 624                 if (need_to_free_re) regfree(&re);
 625                 return -1;
 626         }
 627         CtdlGetUser(&CCC->user, CCC->curr_user);
 628
 629         if (server_shutting_down) {
 630                 if (need_to_free_re) regfree(&re);
 631                 return -1;
 632         }
 633         CtdlGetRelationship(&vbuf, &CCC->user, &CCC->room);
 634
 635         if (server_shutting_down) {
 636                 if (need_to_free_re) regfree(&re);
 637                 return -1;
 638         }
 639
 640         /* Load the message list */
 641         cdbfr = cdb_fetch(CDB_MSGLISTS, &CCC->room.QRnumber, sizeof(long));
 642         if (cdbfr == NULL) {
 643                 if (need_to_free_re) regfree(&re);
 644                 return 0;       /* No messages at all?  No further action. */
 645         }
 646
 647         msglist = (long *) cdbfr->ptr;
 648         num_msgs = cdbfr->len / sizeof(long);
 649
 650         cdbfr->ptr = NULL;      /* clear this so that cdb_free() doesn't free it */
 651         cdb_free(cdbfr);        /* we own this memory now */
 652
 653         /*
 654          * Now begin the traversal.
 655          */
 656         if (num_msgs > 0) for (a = 0; a < num_msgs; ++a) {
 657
 658                 /* If the caller is looking for a specific MIME type, filter
 659                  * out all messages which are not of the type requested.
 660                  */
 661                 if ((content_type != NULL) && (!IsEmptyStr(content_type))) {
 662
 663                         /* This call to GetMetaData() sits inside this loop
 664                          * so that we only do the extra database read per msg
 665                          * if we need to.  Doing the extra read all the time
 666                          * really kills the server.  If we ever need to use
 667                          * metadata for another search criterion, we need to
 668                          * move the read somewhere else -- but still be smart
 669                          * enough to only do the read if the caller has
 670                          * specified something that will need it.
 671                          */
 672                         if (server_shutting_down) {
 673                                 if (need_to_free_re) regfree(&re);
 674                                 free(msglist);
 675                                 return -1;
 676                         }
 677                         GetMetaData(&smi, msglist[a]);
 678
 679                         /* if (strcasecmp(smi.meta_content_type, content_type)) { old non-regex way */
 680                         if (regexec(&re, smi.meta_content_type, 1, &pm, 0) != 0) {
 681                                 msglist[a] = 0L;
 682                         }
 683                 }
 684         }
 685
 686         num_msgs = sort_msglist(msglist, num_msgs);
 687
 688         /* If a template was supplied, filter out the messages which
 689          * don't match.  (This could induce some delays!)
 690          */
 691         if (num_msgs > 0) {
 692                 if (compare != NULL) {
 693                         for (a = 0; a < num_msgs; ++a) {
 694                                 if (server_shutting_down) {
 695                                         if (need_to_free_re) regfree(&re);
 696                                         free(msglist);
 697                                         return -1;
 698                                 }
 699                                 msg = CtdlFetchMessage(msglist[a], 1);
 700                                 if (msg != NULL) {
 701                                         if (CtdlMsgCmp(msg, compare)) {
 702                                                 msglist[a] = 0L;
 703                                         }
 704                                         CtdlFreeMessage(msg);
 705                                 }
 706                         }
 707                 }
 708         }
 709
 710         /* If a search string was specified, get a message list from
 711          * the full text index and remove messages which aren't on both
 712          * lists.
 713          *
 714          * How this works:
 715          * Since the lists are sorted and strictly ascending, and the
 716          * output list is guaranteed to be shorter than or equal to the
 717          * input list, we overwrite the bottom of the input list.  This
 718          * eliminates the need to memmove big chunks of the list over and
 719          * over again.
 720          */
 721         if ( (num_msgs > 0) && (mode == MSGS_SEARCH) && (search_string) ) {
 722
 723                 /* Call search module via hook mechanism.
 724                  * NULL means use any search function available.
 725                  * otherwise replace with a char * to name of search routine
 726                  */
 727                 CtdlModuleDoSearch(&num_search_msgs, &search_msgs, search_string, "fulltext");
 728
 729                 if (num_search_msgs > 0) {
 730
 731                         int orig_num_msgs;
 732
 733                         orig_num_msgs = num_msgs;
 734                         num_msgs = 0;
 735                         for (i=0; i<orig_num_msgs; ++i) {
 736                                 for (j=0; j<num_search_msgs; ++j) {
 737                                         if (msglist[i] == search_msgs[j]) {
 738                                                 msglist[num_msgs++] = msglist[i];
 739                                         }
 740                                 }
 741                         }
 742                 }
 743                 else {
 744                         num_msgs = 0;   /* No messages qualify */
 745                 }
 746                 if (search_msgs != NULL) free(search_msgs);
 747
 748                 /* Now that we've purged messages which don't contain the search
 749                  * string, treat a MSGS_SEARCH just like a MSGS_ALL from this
 750                  * point on.
 751                  */
 752                 mode = MSGS_ALL;
 753         }
 754
 755         /*
 756          * Now iterate through the message list, according to the
 757          * criteria supplied by the caller.
 758          */
 759         if (num_msgs > 0)
 760                 for (a = 0; a < num_msgs; ++a) {
 761                         if (server_shutting_down) {
 762                                 if (need_to_free_re) regfree(&re);
 763                                 free(msglist);
 764                                 return num_processed;
 765                         }
 766                         thismsg = msglist[a];
 767                         if (mode == MSGS_ALL) {
 768                                 is_seen = 0;
 769                         }
 770                         else {
 771                                 is_seen = is_msg_in_sequence_set(
 772                                                         vbuf.v_seen, thismsg);
 773                                 if (is_seen) lastold = thismsg;
 774                         }
 775                         if ((thismsg > 0L)
 776                             && (
 777
 778                                        (mode == MSGS_ALL)
 779                                        || ((mode == MSGS_OLD) && (is_seen))
 780                                        || ((mode == MSGS_NEW) && (!is_seen))
 781                                        || ((mode == MSGS_LAST) && (a >= (num_msgs - ref)))
 782                                    || ((mode == MSGS_FIRST) && (a < ref))
 783                                 || ((mode == MSGS_GT) && (thismsg > ref))
 784                                 || ((mode == MSGS_LT) && (thismsg < ref))
 785                                 || ((mode == MSGS_EQ) && (thismsg == ref))
 786                             )
 787                             ) {
 788                                 if ((mode == MSGS_NEW) && (CCC->user.flags & US_LASTOLD) && (lastold > 0L) && (printed_lastold == 0) && (!is_seen)) {
 789                                         if (CallBack)
 790                                                 CallBack(lastold, userdata);
 791                                         printed_lastold = 1;
 792                                         ++num_processed;
 793                                 }
 794                                 if (CallBack) CallBack(thismsg, userdata);
 795                                 ++num_processed;
 796                         }
 797                 }
 798         if (need_to_free_re) regfree(&re);
 799
 800         /*
 801          * We cache the most recent msglist in order to do security checks later
 802          */
 803         if (CCC->client_socket > 0) {
 804                 if (CCC->cached_msglist != NULL) {
 805                         free(CCC->cached_msglist);
 806                 }
 807                 CCC->cached_msglist = msglist;
 808                 CCC->cached_num_msgs = num_msgs;
 809         }
 810         else {
 811                 free(msglist);
 812         }
 813
 814         return num_processed;
 815 }
 816
 817
 818
 819 /*
 820  * cmd_msgs()  -  get list of message #'s in this room
 821  *              implements the MSGS server command using CtdlForEachMessage()
 822  */
 823 void cmd_msgs(char *cmdbuf)
 824 {
 825         int mode = 0;
 826         char which[16];
 827         char buf[256];
 828         char tfield[256];
 829         char tvalue[256];
 830         int cm_ref = 0;
 831         int i;
 832         int with_template = 0;
 833         struct CtdlMessage *template = NULL;
 834         char search_string[1024];
 835         ForEachMsgCallback CallBack;
 836
 837         if (CtdlAccessCheck(ac_logged_in_or_guest)) return;
 838
 839         extract_token(which, cmdbuf, 0, '|', sizeof which);
 840         cm_ref = extract_int(cmdbuf, 1);
 841         extract_token(search_string, cmdbuf, 1, '|', sizeof search_string);
 842         with_template = extract_int(cmdbuf, 2);
 843         switch (extract_int(cmdbuf, 3))
 844         {
 845         default:
 846         case MSG_HDRS_BRIEF:
 847                 CallBack = simple_listing;
 848                 break;
 849         case MSG_HDRS_ALL:
 850                 CallBack = headers_listing;
 851                 break;
 852         case MSG_HDRS_EUID:
 853                 CallBack = headers_euid;
 854                 break;
 855         }
 856
 857         strcat(which, "   ");
 858         if (!strncasecmp(which, "OLD", 3))
 859                 mode = MSGS_OLD;
 860         else if (!strncasecmp(which, "NEW", 3))
 861                 mode = MSGS_NEW;
 862         else if (!strncasecmp(which, "FIRST", 5))
 863                 mode = MSGS_FIRST;
 864         else if (!strncasecmp(which, "LAST", 4))
 865                 mode = MSGS_LAST;
 866         else if (!strncasecmp(which, "GT", 2))
 867                 mode = MSGS_GT;
 868         else if (!strncasecmp(which, "LT", 2))
 869                 mode = MSGS_LT;
 870         else if (!strncasecmp(which, "SEARCH", 6))
 871                 mode = MSGS_SEARCH;
 872         else
 873                 mode = MSGS_ALL;
 874
 875         if ( (mode == MSGS_SEARCH) && (!config.c_enable_fulltext) ) {
 876                 cprintf("%d Full text index is not enabled on this server.\n",
 877                         ERROR + CMD_NOT_SUPPORTED);
 878                 return;
 879         }
 880
 881         if (with_template) {
 882                 unbuffer_output();
 883                 cprintf("%d Send template then receive message list\n",
 884                         START_CHAT_MODE);
 885                 template = (struct CtdlMessage *)
 886                         malloc(sizeof(struct CtdlMessage));
 887                 memset(template, 0, sizeof(struct CtdlMessage));
 888                 template->cm_magic = CTDLMESSAGE_MAGIC;
 889                 template->cm_anon_type = MES_NORMAL;
 890
 891                 while(client_getln(buf, sizeof buf) >= 0 && strcmp(buf,"000")) {
 892                         extract_token(tfield, buf, 0, '|', sizeof tfield);
 893                         extract_token(tvalue, buf, 1, '|', sizeof tvalue);
 894                         for (i='A'; i<='Z'; ++i) if (msgkeys[i]!=NULL) {
 895                                 if (!strcasecmp(tfield, msgkeys[i])) {
 896                                         template->cm_fields[i] =
 897                                                 strdup(tvalue);
 898                                 }
 899                         }
 900                 }
 901                 buffer_output();
 902         }
 903         else {
 904                 cprintf("%d  \n", LISTING_FOLLOWS);
 905         }
 906
 907         CtdlForEachMessage(mode,
 908                            ( (mode == MSGS_SEARCH) ? 0 : cm_ref ),
 909                            ( (mode == MSGS_SEARCH) ? search_string : NULL ),
 910                            NULL,
 911                            template,
 912                            CallBack,
 913                            NULL);
 914         if (template != NULL) CtdlFreeMessage(template);
 915         cprintf("000\n");
 916 }
 917
 918
 919
 920
 921 /*
 922  * help_subst()  -  support routine for help file viewer
 923  */
 924 void help_subst(char *strbuf, char *source, char *dest)
 925 {
 926         char workbuf[SIZ];
 927         int p;
 928
 929         while (p = pattern2(strbuf, source), (p >= 0)) {
 930                 strcpy(workbuf, &strbuf[p + strlen(source)]);
 931                 strcpy(&strbuf[p], dest);
 932                 strcat(strbuf, workbuf);
 933         }
 934 }
 935
 936
 937 void do_help_subst(char *buffer)
 938 {
 939         char buf2[16];
 940
 941         help_subst(buffer, "^nodename", config.c_nodename);
 942         help_subst(buffer, "^humannode", config.c_humannode);
 943         help_subst(buffer, "^fqdn", config.c_fqdn);
 944         help_subst(buffer, "^username", CC->user.fullname);
 945         snprintf(buf2, sizeof buf2, "%ld", CC->user.usernum);
 946         help_subst(buffer, "^usernum", buf2);
 947         help_subst(buffer, "^sysadm", config.c_sysadm);
 948         help_subst(buffer, "^variantname", CITADEL);
 949         snprintf(buf2, sizeof buf2, "%d", config.c_maxsessions);
 950         help_subst(buffer, "^maxsessions", buf2);
 951         help_subst(buffer, "^bbsdir", ctdl_message_dir);
 952 }
 953
 954
 955
 956 /*
 957  * memfmout()  -  Citadel text formatter and paginator.
 958  *           Although the original purpose of this routine was to format
 959  *           text to the reader's screen width, all we're really using it
 960  *           for here is to format text out to 80 columns before sending it
 961  *           to the client.  The client software may reformat it again.
 962  */
 963 void memfmout(
 964         char *mptr,             /* where are we going to get our text from? */
 965         const char *nl          /* string to terminate lines with */
 966 ) {
 967         struct CitContext *CCC = CC;
 968         int column = 0;
 969         unsigned char ch = 0;
 970         char outbuf[1024];
 971         int len = 0;
 972         int nllen = 0;
 973
 974         if (!mptr) return;
 975         nllen = strlen(nl);
 976         while (ch=*(mptr++), ch != 0) {
 977
 978                 if (ch == '\n') {
 979                         if (client_write(outbuf, len) == -1)
 980                         {
 981                                 MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
 982                                 return;
 983                         }
 984                         len = 0;
 985                         if (client_write(nl, nllen) == -1)
 986                         {
 987                                 MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
 988                                 return;
 989                         }
 990                         column = 0;
 991                 }
 992                 else if (ch == '\r') {
 993                         /* Ignore carriage returns.  Newlines are always LF or CRLF but never CR. */
 994                 }
 995                 else if (isspace(ch)) {
 996                         if (column > 72) {              /* Beyond 72 columns, break on the next space */
 997                                 if (client_write(outbuf, len) == -1)
 998                                 {
 999                                         MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1000                                         return;
1001                                 }
1002                                 len = 0;
1003                                 if (client_write(nl, nllen) == -1)
1004                                 {
1005                                         MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1006                                         return;
1007                                 }
1008                                 column = 0;
1009                         }
1010                         else {
1011                                 outbuf[len++] = ch;
1012                                 ++column;
1013                         }
1014                 }
1015                 else {
1016                         outbuf[len++] = ch;
1017                         ++column;
1018                         if (column > 1000) {            /* Beyond 1000 columns, break anywhere */
1019                                 if (client_write(outbuf, len) == -1)
1020                                 {
1021                                         MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1022                                         return;
1023                                 }
1024                                 len = 0;
1025                                 if (client_write(nl, nllen) == -1)
1026                                 {
1027                                         MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1028                                         return;
1029                                 }
1030                                 column = 0;
1031                         }
1032                 }
1033         }
1034         if (len) {
1035                 if (client_write(outbuf, len) == -1)
1036                 {
1037                         MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1038                         return;
1039                 }
1040                 len = 0;
1041                 client_write(nl, nllen);
1042                 column = 0;
1043         }
1044 }
1045
1046
1047
1048 /*
1049  * Callback function for mime parser that simply lists the part
1050  */
1051 void list_this_part(char *name, char *filename, char *partnum, char *disp,
1052                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1053                     char *cbid, void *cbuserdata)
1054 {
1055         struct ma_info *ma;
1056
1057         ma = (struct ma_info *)cbuserdata;
1058         if (ma->is_ma == 0) {
1059                 cprintf("part=%s|%s|%s|%s|%s|%ld|%s|%s\n",
1060                         name,
1061                         filename,
1062                         partnum,
1063                         disp,
1064                         cbtype,
1065                         (long)length,
1066                         cbid,
1067                         cbcharset);
1068         }
1069 }
1070
1071 /*
1072  * Callback function for multipart prefix
1073  */
1074 void list_this_pref(char *name, char *filename, char *partnum, char *disp,
1075                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1076                     char *cbid, void *cbuserdata)
1077 {
1078         struct ma_info *ma;
1079
1080         ma = (struct ma_info *)cbuserdata;
1081         if (!strcasecmp(cbtype, "multipart/alternative")) {
1082                 ++ma->is_ma;
1083         }
1084
1085         if (ma->is_ma == 0) {
1086                 cprintf("pref=%s|%s\n", partnum, cbtype);
1087         }
1088 }
1089
1090 /*
1091  * Callback function for multipart sufffix
1092  */
1093 void list_this_suff(char *name, char *filename, char *partnum, char *disp,
1094                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1095                     char *cbid, void *cbuserdata)
1096 {
1097         struct ma_info *ma;
1098
1099         ma = (struct ma_info *)cbuserdata;
1100         if (ma->is_ma == 0) {
1101                 cprintf("suff=%s|%s\n", partnum, cbtype);
1102         }
1103         if (!strcasecmp(cbtype, "multipart/alternative")) {
1104                 --ma->is_ma;
1105         }
1106 }
1107
1108
1109 /*
1110  * Callback function for mime parser that opens a section for downloading
1111  */
1112 void mime_download(char *name, char *filename, char *partnum, char *disp,
1113                    void *content, char *cbtype, char *cbcharset, size_t length,
1114                    char *encoding, char *cbid, void *cbuserdata)
1115 {
1116         int rv = 0;
1117         CitContext *CCC = MyContext();
1118
1119         /* Silently go away if there's already a download open. */
1120         if (CCC->download_fp != NULL)
1121                 return;
1122
1123         if (
1124                 (!IsEmptyStr(partnum) && (!strcasecmp(CCC->download_desired_section, partnum)))
1125         ||      (!IsEmptyStr(cbid) && (!strcasecmp(CCC->download_desired_section, cbid)))
1126         ) {
1127                 CCC->download_fp = tmpfile();
1128                 if (CCC->download_fp == NULL) {
1129                         MSG_syslog(LOG_EMERG, "mime_download(): Couldn't write: %s\n",
1130                                     strerror(errno));
1131                         cprintf("%d cannot open temporary file: %s\n",
1132                                 ERROR + INTERNAL_ERROR, strerror(errno));
1133                         return;
1134                 }
1135
1136                 rv = fwrite(content, length, 1, CC->download_fp);
1137                 if (rv <= 0) {
1138                         MSG_syslog(LOG_EMERG, "mime_download(): Couldn't write: %s\n",
1139                                    strerror(errno));
1140                         cprintf("%d unable to write tempfile.\n",
1141                                 ERROR + TOO_BIG);
1142                         fclose(CCC->download_fp);
1143                         CCC->download_fp = NULL;
1144                         return;
1145                 }
1146                 fflush(CCC->download_fp);
1147                 rewind(CCC->download_fp);
1148
1149                 OpenCmdResult(filename, cbtype);
1150         }
1151 }
1152
1153
1154
1155 /*
1156  * Callback function for mime parser that outputs a section all at once.
1157  * We can specify the desired section by part number *or* content-id.
1158  */
1159 void mime_spew_section(char *name, char *filename, char *partnum, char *disp,
1160                    void *content, char *cbtype, char *cbcharset, size_t length,
1161                    char *encoding, char *cbid, void *cbuserdata)
1162 {
1163         int *found_it = (int *)cbuserdata;
1164
1165         if (
1166                 (!IsEmptyStr(partnum) && (!strcasecmp(CC->download_desired_section, partnum)))
1167         ||      (!IsEmptyStr(cbid) && (!strcasecmp(CC->download_desired_section, cbid)))
1168         ) {
1169                 *found_it = 1;
1170                 cprintf("%d %d|-1|%s|%s|%s\n",
1171                         BINARY_FOLLOWS,
1172                         (int)length,
1173                         filename,
1174                         cbtype,
1175                         cbcharset
1176                 );
1177                 client_write(content, length);
1178         }
1179 }
1180
1181
1182 /*
1183  * Load a message from disk into memory.
1184  * This is used by CtdlOutputMsg() and other fetch functions.
1185  *
1186  * NOTE: Caller is responsible for freeing the returned CtdlMessage struct
1187  *       using the CtdlMessageFree() function.
1188  */
1189 struct CtdlMessage *CtdlFetchMessage(long msgnum, int with_body)
1190 {
1191         struct CitContext *CCC = CC;
1192         struct cdbdata *dmsgtext;
1193         struct CtdlMessage *ret = NULL;
1194         char *mptr;
1195         char *upper_bound;
1196         cit_uint8_t ch;
1197         cit_uint8_t field_header;
1198
1199         MSG_syslog(LOG_DEBUG, "CtdlFetchMessage(%ld, %d)\n", msgnum, with_body);
1200         dmsgtext = cdb_fetch(CDB_MSGMAIN, &msgnum, sizeof(long));
1201         if (dmsgtext == NULL) {
1202                 return NULL;
1203         }
1204         mptr = dmsgtext->ptr;
1205         upper_bound = mptr + dmsgtext->len;
1206
1207         /* Parse the three bytes that begin EVERY message on disk.
1208          * The first is always 0xFF, the on-disk magic number.
1209          * The second is the anonymous/public type byte.
1210          * The third is the format type byte (vari, fixed, or MIME).
1211          */
1212         ch = *mptr++;
1213         if (ch != 255) {
1214                 MSG_syslog(LOG_ERR, "Message %ld appears to be corrupted.\n", msgnum);
1215                 cdb_free(dmsgtext);
1216                 return NULL;
1217         }
1218         ret = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
1219         memset(ret, 0, sizeof(struct CtdlMessage));
1220
1221         ret->cm_magic = CTDLMESSAGE_MAGIC;
1222         ret->cm_anon_type = *mptr++;    /* Anon type byte */
1223         ret->cm_format_type = *mptr++;  /* Format type byte */
1224
1225         /*
1226          * The rest is zero or more arbitrary fields.  Load them in.
1227          * We're done when we encounter either a zero-length field or
1228          * have just processed the 'M' (message text) field.
1229          */
1230         do {
1231                 if (mptr >= upper_bound) {
1232                         break;
1233                 }
1234                 field_header = *mptr++;
1235                 ret->cm_fields[field_header] = strdup(mptr);
1236
1237                 while (*mptr++ != 0);   /* advance to next field */
1238
1239         } while ((mptr < upper_bound) && (field_header != 'M'));
1240
1241         cdb_free(dmsgtext);
1242
1243         /* Always make sure there's something in the msg text field.  If
1244          * it's NULL, the message text is most likely stored separately,
1245          * so go ahead and fetch that.  Failing that, just set a dummy
1246          * body so other code doesn't barf.
1247          */
1248         if ( (ret->cm_fields['M'] == NULL) && (with_body) ) {
1249                 dmsgtext = cdb_fetch(CDB_BIGMSGS, &msgnum, sizeof(long));
1250                 if (dmsgtext != NULL) {
1251                         ret->cm_fields['M'] = dmsgtext->ptr;
1252                         dmsgtext->ptr = NULL;
1253                         cdb_free(dmsgtext);
1254                 }
1255         }
1256         if (ret->cm_fields['M'] == NULL) {
1257                 ret->cm_fields['M'] = strdup("\r\n\r\n (no text)\r\n");
1258         }
1259
1260         /* Perform "before read" hooks (aborting if any return nonzero) */
1261         if (PerformMessageHooks(ret, EVT_BEFOREREAD) > 0) {
1262                 CtdlFreeMessage(ret);
1263                 return NULL;
1264         }
1265
1266         return (ret);
1267 }
1268
1269
1270 /*
1271  * Returns 1 if the supplied pointer points to a valid Citadel message.
1272  * If the pointer is NULL or the magic number check fails, returns 0.
1273  */
1274 int is_valid_message(struct CtdlMessage *msg) {
1275         if (msg == NULL)
1276                 return 0;
1277         if ((msg->cm_magic) != CTDLMESSAGE_MAGIC) {
1278                 struct CitContext *CCC = CC;
1279                 MSGM_syslog(LOG_WARNING, "is_valid_message() -- self-check failed\n");
1280                 return 0;
1281         }
1282         return 1;
1283 }
1284
1285 void CtdlFreeMessageContents(struct CtdlMessage *msg)
1286 {
1287         int i;
1288
1289         for (i = 0; i < 256; ++i)
1290                 if (msg->cm_fields[i] != NULL) {
1291                         free(msg->cm_fields[i]);
1292                 }
1293
1294         msg->cm_magic = 0;      /* just in case */
1295 }
1296 /*
1297  * 'Destructor' for struct CtdlMessage
1298  */
1299 void CtdlFreeMessage(struct CtdlMessage *msg)
1300 {
1301         if (is_valid_message(msg) == 0)
1302         {
1303                 if (msg != NULL) free (msg);
1304                 return;
1305         }
1306         CtdlFreeMessageContents(msg);
1307         free(msg);
1308 }
1309
1310
1311 /*
1312  * Pre callback function for multipart/alternative
1313  *
1314  * NOTE: this differs from the standard behavior for a reason.  Normally when
1315  *       displaying multipart/alternative you want to show the _last_ usable
1316  *       format in the message.  Here we show the _first_ one, because it's
1317  *       usually text/plain.  Since this set of functions is designed for text
1318  *       output to non-MIME-aware clients, this is the desired behavior.
1319  *
1320  */
1321 void fixed_output_pre(char *name, char *filename, char *partnum, char *disp,
1322                 void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1323                 char *cbid, void *cbuserdata)
1324 {
1325         struct CitContext *CCC = CC;
1326         struct ma_info *ma;
1327
1328         ma = (struct ma_info *)cbuserdata;
1329         MSG_syslog(LOG_DEBUG, "fixed_output_pre() type=<%s>\n", cbtype);
1330         if (!strcasecmp(cbtype, "multipart/alternative")) {
1331                 ++ma->is_ma;
1332                 ma->did_print = 0;
1333         }
1334         if (!strcasecmp(cbtype, "message/rfc822")) {
1335                 ++ma->freeze;
1336         }
1337 }
1338
1339 /*
1340  * Post callback function for multipart/alternative
1341  */
1342 void fixed_output_post(char *name, char *filename, char *partnum, char *disp,
1343                 void *content, char *cbtype, char *cbcharset, size_t length,
1344                 char *encoding, char *cbid, void *cbuserdata)
1345 {
1346         struct CitContext *CCC = CC;
1347         struct ma_info *ma;
1348
1349         ma = (struct ma_info *)cbuserdata;
1350         MSG_syslog(LOG_DEBUG, "fixed_output_post() type=<%s>\n", cbtype);
1351         if (!strcasecmp(cbtype, "multipart/alternative")) {
1352                 --ma->is_ma;
1353                 ma->did_print = 0;
1354         }
1355         if (!strcasecmp(cbtype, "message/rfc822")) {
1356                 --ma->freeze;
1357         }
1358 }
1359
1360 /*
1361  * Inline callback function for mime parser that wants to display text
1362  */
1363 void fixed_output(char *name, char *filename, char *partnum, char *disp,
1364                 void *content, char *cbtype, char *cbcharset, size_t length,
1365                 char *encoding, char *cbid, void *cbuserdata)
1366 {
1367         struct CitContext *CCC = CC;
1368         char *ptr;
1369         char *wptr;
1370         size_t wlen;
1371         struct ma_info *ma;
1372
1373         ma = (struct ma_info *)cbuserdata;
1374
1375         MSG_syslog(LOG_DEBUG,
1376                 "fixed_output() part %s: %s (%s) (%ld bytes)\n",
1377                 partnum, filename, cbtype, (long)length);
1378
1379         /*
1380          * If we're in the middle of a multipart/alternative scope and
1381          * we've already printed another section, skip this one.
1382          */
1383         if ( (ma->is_ma) && (ma->did_print) ) {
1384                 MSG_syslog(LOG_DEBUG, "Skipping part %s (%s)\n", partnum, cbtype);
1385                 return;
1386         }
1387         ma->did_print = 1;
1388
1389         if ( (!strcasecmp(cbtype, "text/plain"))
1390            || (IsEmptyStr(cbtype)) ) {
1391                 wptr = content;
1392                 if (length > 0) {
1393                         client_write(wptr, length);
1394                         if (wptr[length-1] != '\n') {
1395                                 cprintf("\n");
1396                         }
1397                 }
1398                 return;
1399         }
1400
1401         if (!strcasecmp(cbtype, "text/html")) {
1402                 ptr = html_to_ascii(content, length, 80, 0);
1403                 wlen = strlen(ptr);
1404                 client_write(ptr, wlen);
1405                 if ((wlen > 0) && (ptr[wlen-1] != '\n')) {
1406                         cprintf("\n");
1407                 }
1408                 free(ptr);
1409                 return;
1410         }
1411
1412         if (ma->use_fo_hooks) {
1413                 if (PerformFixedOutputHooks(cbtype, content, length)) {
1414                 /* above function returns nonzero if it handled the part */
1415                         return;
1416                 }
1417         }
1418
1419         if (strncasecmp(cbtype, "multipart/", 10)) {
1420                 cprintf("Part %s: %s (%s) (%ld bytes)\r\n",
1421                         partnum, filename, cbtype, (long)length);
1422                 return;
1423         }
1424 }
1425
1426 /*
1427  * The client is elegant and sophisticated and wants to be choosy about
1428  * MIME content types, so figure out which multipart/alternative part
1429  * we're going to send.
1430  *
1431  * We use a system of weights.  When we find a part that matches one of the
1432  * MIME types we've declared as preferential, we can store it in ma->chosen_part
1433  * and then set ma->chosen_pref to that MIME type's position in our preference
1434  * list.  If we then hit another match, we only replace the first match if
1435  * the preference value is lower.
1436  */
1437 void choose_preferred(char *name, char *filename, char *partnum, char *disp,
1438                 void *content, char *cbtype, char *cbcharset, size_t length,
1439                 char *encoding, char *cbid, void *cbuserdata)
1440 {
1441         struct CitContext *CCC = CC;
1442         char buf[1024];
1443         int i;
1444         struct ma_info *ma;
1445
1446         ma = (struct ma_info *)cbuserdata;
1447
1448         // NOTE: REMOVING THIS CONDITIONAL FIXES BUG 220
1449         //       http://bugzilla.citadel.org/show_bug.cgi?id=220
1450         // I don't know if there are any side effects!  Please TEST TEST TEST
1451         //if (ma->is_ma > 0) {
1452
1453         for (i=0; i<num_tokens(CCC->preferred_formats, '|'); ++i) {
1454                 extract_token(buf, CCC->preferred_formats, i, '|', sizeof buf);
1455                 if ( (!strcasecmp(buf, cbtype)) && (!ma->freeze) ) {
1456                         if (i < ma->chosen_pref) {
1457                                 MSG_syslog(LOG_DEBUG, "Setting chosen part: <%s>\n", partnum);
1458                                 safestrncpy(ma->chosen_part, partnum, sizeof ma->chosen_part);
1459                                 ma->chosen_pref = i;
1460                         }
1461                 }
1462         }
1463 }
1464
1465 /*
1466  * Now that we've chosen our preferred part, output it.
1467  */
1468 void output_preferred(char *name,
1469                       char *filename,
1470                       char *partnum,
1471                       char *disp,
1472                       void *content,
1473                       char *cbtype,
1474                       char *cbcharset,
1475                       size_t length,
1476                       char *encoding,
1477                       char *cbid,
1478                       void *cbuserdata)
1479 {
1480         struct CitContext *CCC = CC;
1481         int i;
1482         char buf[128];
1483         int add_newline = 0;
1484         char *text_content;
1485         struct ma_info *ma;
1486         char *decoded = NULL;
1487         size_t bytes_decoded;
1488         int rc = 0;
1489
1490         ma = (struct ma_info *)cbuserdata;
1491
1492         /* This is not the MIME part you're looking for... */
1493         if (strcasecmp(partnum, ma->chosen_part)) return;
1494
1495         /* If the content-type of this part is in our preferred formats
1496          * list, we can simply output it verbatim.
1497          */
1498         for (i=0; i<num_tokens(CCC->preferred_formats, '|'); ++i) {
1499                 extract_token(buf, CCC->preferred_formats, i, '|', sizeof buf);
1500                 if (!strcasecmp(buf, cbtype)) {
1501                         /* Yeah!  Go!  W00t!! */
1502                         if (ma->dont_decode == 0)
1503                                 rc = mime_decode_now (content,
1504                                                       length,
1505                                                       encoding,
1506                                                       &decoded,
1507                                                       &bytes_decoded);
1508                         if (rc < 0)
1509                                 break; /* Give us the chance, maybe theres another one. */
1510
1511                         if (rc == 0) text_content = (char *)content;
1512                         else {
1513                                 text_content = decoded;
1514                                 length = bytes_decoded;
1515                         }
1516
1517                         if (text_content[length-1] != '\n') {
1518                                 ++add_newline;
1519                         }
1520                         cprintf("Content-type: %s", cbtype);
1521                         if (!IsEmptyStr(cbcharset)) {
1522                                 cprintf("; charset=%s", cbcharset);
1523                         }
1524                         cprintf("\nContent-length: %d\n",
1525                                 (int)(length + add_newline) );
1526                         if (!IsEmptyStr(encoding)) {
1527                                 cprintf("Content-transfer-encoding: %s\n", encoding);
1528                         }
1529                         else {
1530                                 cprintf("Content-transfer-encoding: 7bit\n");
1531                         }
1532                         cprintf("X-Citadel-MSG4-Partnum: %s\n", partnum);
1533                         cprintf("\n");
1534                         if (client_write(text_content, length) == -1)
1535                         {
1536                                 MSGM_syslog(LOG_ERR, "output_preferred(): aborting due to write failure.\n");
1537                                 return;
1538                         }
1539                         if (add_newline) cprintf("\n");
1540                         if (decoded != NULL) free(decoded);
1541                         return;
1542                 }
1543         }
1544
1545         /* No translations required or possible: output as text/plain */
1546         cprintf("Content-type: text/plain\n\n");
1547         rc = 0;
1548         if (ma->dont_decode == 0)
1549                 rc = mime_decode_now (content,
1550                                       length,
1551                                       encoding,
1552                                       &decoded,
1553                                       &bytes_decoded);
1554         if (rc < 0)
1555                 return; /* Give us the chance, maybe theres another one. */
1556
1557         if (rc == 0) text_content = (char *)content;
1558         else {
1559                 text_content = decoded;
1560                 length = bytes_decoded;
1561         }
1562
1563         fixed_output(name, filename, partnum, disp, text_content, cbtype, cbcharset,
1564                         length, encoding, cbid, cbuserdata);
1565         if (decoded != NULL) free(decoded);
1566 }
1567
1568
1569 struct encapmsg {
1570         char desired_section[64];
1571         char *msg;
1572         size_t msglen;
1573 };
1574
1575
1576 /*
1577  * Callback function for
1578  */
1579 void extract_encapsulated_message(char *name, char *filename, char *partnum, char *disp,
1580                    void *content, char *cbtype, char *cbcharset, size_t length,
1581                    char *encoding, char *cbid, void *cbuserdata)
1582 {
1583         struct encapmsg *encap;
1584
1585         encap = (struct encapmsg *)cbuserdata;
1586
1587         /* Only proceed if this is the desired section... */
1588         if (!strcasecmp(encap->desired_section, partnum)) {
1589                 encap->msglen = length;
1590                 encap->msg = malloc(length + 2);
1591                 memcpy(encap->msg, content, length);
1592                 return;
1593         }
1594 }
1595
1596
1597 /*
1598  * Determine whether the specified message exists in the cached_msglist
1599  * (This is a security check)
1600  */
1601 int check_cached_msglist(long msgnum) {
1602         struct CitContext *CCC = CC;
1603
1604         /* cases in which we skip the check */
1605         if (!CCC) return om_ok;                                         /* not a session */
1606         if (CCC->client_socket <= 0) return om_ok;                      /* not a client session */
1607         if (CCC->cached_msglist == NULL) return om_access_denied;       /* no msglist fetched */
1608         if (CCC->cached_num_msgs == 0) return om_access_denied;         /* nothing to check */
1609
1610
1611         /* Do a binary search within the cached_msglist for the requested msgnum */
1612         int min = 0;
1613         int max = (CC->cached_num_msgs - 1);
1614
1615         while (max >= min) {
1616                 int middle = min + (max-min) / 2 ;
1617                 if (msgnum == CCC->cached_msglist[middle]) {
1618                         return om_ok;
1619                 }
1620                 if (msgnum > CC->cached_msglist[middle]) {
1621                         min = middle + 1;
1622                 }
1623                 else {
1624                         max = middle - 1;
1625                 }
1626         }
1627
1628         return om_access_denied;
1629 }
1630
1631
1632 /*
1633  * Determine whether the currently logged in session has permission to read
1634  * messages in the current room.
1635  */
1636 int CtdlDoIHavePermissionToReadMessagesInThisRoom(void) {
1637         if (    (!(CC->logged_in))
1638                 && (!(CC->internal_pgm))
1639                 && (!config.c_guest_logins)
1640         ) {
1641                 return(om_not_logged_in);
1642         }
1643         return(om_ok);
1644 }
1645
1646
1647 /*
1648  * Get a message off disk.  (returns om_* values found in msgbase.h)
1649  *
1650  */
1651 int CtdlOutputMsg(long msg_num,         /* message number (local) to fetch */
1652                   int mode,             /* how would you like that message? */
1653                   int headers_only,     /* eschew the message body? */
1654                   int do_proto,         /* do Citadel protocol responses? */
1655                   int crlf,             /* Use CRLF newlines instead of LF? */
1656                   char *section,        /* NULL or a message/rfc822 section */
1657                   int flags             /* various flags; see msgbase.h */
1658 ) {
1659         struct CitContext *CCC = CC;
1660         struct CtdlMessage *TheMessage = NULL;
1661         int retcode = CIT_OK;
1662         struct encapmsg encap;
1663         int r;
1664
1665         MSG_syslog(LOG_DEBUG, "CtdlOutputMsg(msgnum=%ld, mode=%d, section=%s)\n",
1666                 msg_num, mode,
1667                 (section ? section : "<>")
1668         );
1669
1670         r = CtdlDoIHavePermissionToReadMessagesInThisRoom();
1671         if (r != om_ok) {
1672                 if (do_proto) {
1673                         if (r == om_not_logged_in) {
1674                                 cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN);
1675                         }
1676                         else {
1677                                 cprintf("%d An unknown error has occurred.\n", ERROR);
1678                         }
1679                 }
1680                 return(r);
1681         }
1682
1683         /*
1684          * Check to make sure the message is actually IN this room
1685          */
1686         r = check_cached_msglist(msg_num);
1687         if (r == om_access_denied) {
1688                 /* Not in the cache?  We get ONE shot to check it again. */
1689                 CtdlForEachMessage(MSGS_ALL, 0L, NULL, NULL, NULL, NULL, NULL);
1690                 r = check_cached_msglist(msg_num);
1691         }
1692         if (r != om_ok) {
1693                 MSG_syslog(LOG_DEBUG, "Security check fail: message %ld is not in %s\n",
1694                            msg_num, CCC->room.QRname
1695                 );
1696                 if (do_proto) {
1697                         if (r == om_access_denied) {
1698                                 cprintf("%d message %ld was not found in this room\n",
1699                                         ERROR + HIGHER_ACCESS_REQUIRED,
1700                                         msg_num
1701                                 );
1702                         }
1703                 }
1704                 return(r);
1705         }
1706
1707         /*
1708          * Fetch the message from disk.  If we're in HEADERS_FAST mode,
1709          * request that we don't even bother loading the body into memory.
1710          */
1711         if (headers_only == HEADERS_FAST) {
1712                 TheMessage = CtdlFetchMessage(msg_num, 0);
1713         }
1714         else {
1715                 TheMessage = CtdlFetchMessage(msg_num, 1);
1716         }
1717
1718         if (TheMessage == NULL) {
1719                 if (do_proto) cprintf("%d Can't locate msg %ld on disk\n",
1720                         ERROR + MESSAGE_NOT_FOUND, msg_num);
1721                 return(om_no_such_msg);
1722         }
1723
1724         /* Here is the weird form of this command, to process only an
1725          * encapsulated message/rfc822 section.
1726          */
1727         if (section) if (!IsEmptyStr(section)) if (strcmp(section, "0")) {
1728                 memset(&encap, 0, sizeof encap);
1729                 safestrncpy(encap.desired_section, section, sizeof encap.desired_section);
1730                 mime_parser(TheMessage->cm_fields['M'],
1731                         NULL,
1732                         *extract_encapsulated_message,
1733                         NULL, NULL, (void *)&encap, 0
1734                 );
1735                 CtdlFreeMessage(TheMessage);
1736                 TheMessage = NULL;
1737
1738                 if (encap.msg) {
1739                         encap.msg[encap.msglen] = 0;
1740                         TheMessage = convert_internet_message(encap.msg);
1741                         encap.msg = NULL;       /* no free() here, TheMessage owns it now */
1742
1743                         /* Now we let it fall through to the bottom of this
1744                          * function, because TheMessage now contains the
1745                          * encapsulated message instead of the top-level
1746                          * message.  Isn't that neat?
1747                          */
1748
1749                 }
1750                 else {
1751                         if (do_proto) {
1752                                 cprintf("%d msg %ld has no part %s\n",
1753                                         ERROR + MESSAGE_NOT_FOUND,
1754                                         msg_num,
1755                                         section);
1756                         }
1757                         retcode = om_no_such_msg;
1758                 }
1759
1760         }
1761
1762         /* Ok, output the message now */
1763         if (retcode == CIT_OK)
1764                 retcode = CtdlOutputPreLoadedMsg(TheMessage, mode, headers_only, do_proto, crlf, flags);
1765         CtdlFreeMessage(TheMessage);
1766
1767         return(retcode);
1768 }
1769
1770
1771 char *qp_encode_email_addrs(char *source)
1772 {
1773         struct CitContext *CCC = CC;
1774         char *user, *node, *name;
1775         const char headerStr[] = "=?UTF-8?Q?";
1776         char *Encoded;
1777         char *EncodedName;
1778         char *nPtr;
1779         int need_to_encode = 0;
1780         long SourceLen;
1781         long EncodedMaxLen;
1782         long nColons = 0;
1783         long *AddrPtr;
1784         long *AddrUtf8;
1785         long nAddrPtrMax = 50;
1786         long nmax;
1787         int InQuotes = 0;
1788         int i, n;
1789
1790         if (source == NULL) return source;
1791         if (IsEmptyStr(source)) return source;
1792         cit_backtrace();
1793         MSG_syslog(LOG_DEBUG, "qp_encode_email_addrs: [%s]\n", source);
1794
1795         AddrPtr = malloc (sizeof (long) * nAddrPtrMax);
1796         AddrUtf8 = malloc (sizeof (long) * nAddrPtrMax);
1797         memset(AddrUtf8, 0, sizeof (long) * nAddrPtrMax);
1798         *AddrPtr = 0;
1799         i = 0;
1800         while (!IsEmptyStr (&source[i])) {
1801                 if (nColons >= nAddrPtrMax){
1802                         long *ptr;
1803
1804                         ptr = (long *) malloc(sizeof (long) * nAddrPtrMax * 2);
1805                         memcpy (ptr, AddrPtr, sizeof (long) * nAddrPtrMax);
1806                         free (AddrPtr), AddrPtr = ptr;
1807
1808                         ptr = (long *) malloc(sizeof (long) * nAddrPtrMax * 2);
1809                         memset(&ptr[nAddrPtrMax], 0,
1810                                sizeof (long) * nAddrPtrMax);
1811
1812                         memcpy (ptr, AddrUtf8, sizeof (long) * nAddrPtrMax);
1813                         free (AddrUtf8), AddrUtf8 = ptr;
1814                         nAddrPtrMax *= 2;
1815                 }
1816                 if (((unsigned char) source[i] < 32) ||
1817                     ((unsigned char) source[i] > 126)) {
1818                         need_to_encode = 1;
1819                         AddrUtf8[nColons] = 1;
1820                 }
1821                 if (source[i] == '"')
1822                         InQuotes = !InQuotes;
1823                 if (!InQuotes && source[i] == ',') {
1824                         AddrPtr[nColons] = i;
1825                         nColons++;
1826                 }
1827                 i++;
1828         }
1829         if (need_to_encode == 0) {
1830                 free(AddrPtr);
1831                 free(AddrUtf8);
1832                 return source;
1833         }
1834
1835         SourceLen = i;
1836         EncodedMaxLen = nColons * (sizeof(headerStr) + 3) + SourceLen * 3;
1837         Encoded = (char*) malloc (EncodedMaxLen);
1838
1839         for (i = 0; i < nColons; i++)
1840                 source[AddrPtr[i]++] = '\0';
1841         /* TODO: if libidn, this might get larger*/
1842         user = malloc(SourceLen + 1);
1843         node = malloc(SourceLen + 1);
1844         name = malloc(SourceLen + 1);
1845
1846         nPtr = Encoded;
1847         *nPtr = '\0';
1848         for (i = 0; i < nColons && nPtr != NULL; i++) {
1849                 nmax = EncodedMaxLen - (nPtr - Encoded);
1850                 if (AddrUtf8[i]) {
1851                         process_rfc822_addr(&source[AddrPtr[i]],
1852                                             user,
1853                                             node,
1854                                             name);
1855                         /* TODO: libIDN here ! */
1856                         if (IsEmptyStr(name)) {
1857                                 n = snprintf(nPtr, nmax,
1858                                              (i==0)?"%s@%s" : ",%s@%s",
1859                                              user, node);
1860                         }
1861                         else {
1862                                 EncodedName = rfc2047encode(name, strlen(name));
1863                                 n = snprintf(nPtr, nmax,
1864                                              (i==0)?"%s <%s@%s>" : ",%s <%s@%s>",
1865                                              EncodedName, user, node);
1866                                 free(EncodedName);
1867                         }
1868                 }
1869                 else {
1870                         n = snprintf(nPtr, nmax,
1871                                      (i==0)?"%s" : ",%s",
1872                                      &source[AddrPtr[i]]);
1873                 }
1874                 if (n > 0 )
1875                         nPtr += n;
1876                 else {
1877                         char *ptr, *nnPtr;
1878                         ptr = (char*) malloc(EncodedMaxLen * 2);
1879                         memcpy(ptr, Encoded, EncodedMaxLen);
1880                         nnPtr = ptr + (nPtr - Encoded), nPtr = nnPtr;
1881                         free(Encoded), Encoded = ptr;
1882                         EncodedMaxLen *= 2;
1883                         i--; /* do it once more with properly lengthened buffer */
1884                 }
1885         }
1886         for (i = 0; i < nColons; i++)
1887                 source[--AddrPtr[i]] = ',';
1888
1889         free(user);
1890         free(node);
1891         free(name);
1892         free(AddrUtf8);
1893         free(AddrPtr);
1894         return Encoded;
1895 }
1896
1897
1898 /* If the last item in a list of recipients was truncated to a partial address,
1899  * remove it completely in order to avoid choking libSieve
1900  */
1901 void sanitize_truncated_recipient(char *str)
1902 {
1903         if (!str) return;
1904         if (num_tokens(str, ',') < 2) return;
1905
1906         int len = strlen(str);
1907         if (len < 900) return;
1908         if (len > 998) str[998] = 0;
1909
1910         char *cptr = strrchr(str, ',');
1911         if (!cptr) return;
1912
1913         char *lptr = strchr(cptr, '<');
1914         char *rptr = strchr(cptr, '>');
1915
1916         if ( (lptr) && (rptr) && (rptr > lptr) ) return;
1917
1918         *cptr = 0;
1919 }
1920
1921
1922 void OutputCtdlMsgHeaders(
1923         struct CtdlMessage *TheMessage,
1924         int do_proto)           /* do Citadel protocol responses? */
1925 {
1926         char allkeys[30];
1927         int i, k, n;
1928         int suppress_f = 0;
1929         char buf[SIZ];
1930         char display_name[256];
1931
1932         /* begin header processing loop for Citadel message format */
1933         safestrncpy(display_name, "<unknown>", sizeof display_name);
1934         if (TheMessage->cm_fields['A']) {
1935                 strcpy(buf, TheMessage->cm_fields['A']);
1936                 if (TheMessage->cm_anon_type == MES_ANONONLY) {
1937                         safestrncpy(display_name, "****", sizeof display_name);
1938                 }
1939                 else if (TheMessage->cm_anon_type == MES_ANONOPT) {
1940                         safestrncpy(display_name, "anonymous", sizeof display_name);
1941                 }
1942                 else {
1943                         safestrncpy(display_name, buf, sizeof display_name);
1944                 }
1945                 if ((is_room_aide())
1946                     && ((TheMessage->cm_anon_type == MES_ANONONLY)
1947                         || (TheMessage->cm_anon_type == MES_ANONOPT))) {
1948                         size_t tmp = strlen(display_name);
1949                         snprintf(&display_name[tmp],
1950                                  sizeof display_name - tmp,
1951                                  " [%s]", buf);
1952                 }
1953         }
1954
1955         /* Don't show Internet address for users on the
1956          * local Citadel network.
1957          */
1958         suppress_f = 0;
1959         if (TheMessage->cm_fields['N'] != NULL)
1960                 if (!IsEmptyStr(TheMessage->cm_fields['N']))
1961                         if (haschar(TheMessage->cm_fields['N'], '.') == 0) {
1962                                 suppress_f = 1;
1963                         }
1964
1965         /* Now spew the header fields in the order we like them. */
1966         n = safestrncpy(allkeys, FORDER, sizeof allkeys);
1967         for (i=0; i<n; ++i) {
1968                 k = (int) allkeys[i];
1969                 if (k != 'M') {
1970                         if ( (TheMessage->cm_fields[k] != NULL)
1971                              && (msgkeys[k] != NULL) ) {
1972                                 if ((k == 'V') || (k == 'R') || (k == 'Y')) {
1973                                         sanitize_truncated_recipient(TheMessage->cm_fields[k]);
1974                                 }
1975                                 if (k == 'A') {
1976                                         if (do_proto) cprintf("%s=%s\n",
1977                                                               msgkeys[k],
1978                                                               display_name);
1979                                 }
1980                                 else if ((k == 'F') && (suppress_f)) {
1981                                         /* do nothing */
1982                                 }
1983                                 /* Masquerade display name if needed */
1984                                 else {
1985                                         if (do_proto) cprintf("%s=%s\n",
1986                                                               msgkeys[k],
1987                                                               TheMessage->cm_fields[k]
1988                                                 );
1989                                 }
1990                         }
1991                 }
1992         }
1993
1994 }
1995
1996 void OutputRFC822MsgHeaders(
1997         struct CtdlMessage *TheMessage,
1998         int flags,              /* should the bessage be exported clean */
1999         const char *nl,
2000         char *mid, long sizeof_mid,
2001         char *suser, long sizeof_suser,
2002         char *luser, long sizeof_luser,
2003         char *fuser, long sizeof_fuser,
2004         char *snode, long sizeof_snode)
2005 {
2006         char datestamp[100];
2007         int subject_found = 0;
2008         char buf[SIZ];
2009         int i, j, k;
2010         char *mptr = NULL;
2011         char *mpptr = NULL;
2012         char *hptr;
2013
2014         for (i = 0; i < 256; ++i) {
2015                 if (TheMessage->cm_fields[i]) {
2016                         mptr = mpptr = TheMessage->cm_fields[i];
2017
2018                         if (i == 'A') {
2019                                 safestrncpy(luser, mptr, sizeof_luser);
2020                                 safestrncpy(suser, mptr, sizeof_suser);
2021                         }
2022                         else if (i == 'Y') {
2023                                 if ((flags & QP_EADDR) != 0) {
2024                                         mptr = qp_encode_email_addrs(mptr);
2025                                 }
2026                                 sanitize_truncated_recipient(mptr);
2027                                 cprintf("CC: %s%s", mptr, nl);
2028                         }
2029                         else if (i == 'P') {
2030                                 cprintf("Return-Path: %s%s", mptr, nl);
2031                         }
2032                         else if (i == 'L') {
2033                                 cprintf("List-ID: %s%s", mptr, nl);
2034                         }
2035                         else if (i == 'V') {
2036                                 if ((flags & QP_EADDR) != 0)
2037                                         mptr = qp_encode_email_addrs(mptr);
2038                                 hptr = mptr;
2039                                 while ((*hptr != '\0') && isspace(*hptr))
2040                                         hptr ++;
2041                                 if (!IsEmptyStr(hptr))
2042                                         cprintf("Envelope-To: %s%s", hptr, nl);
2043                         }
2044                         else if (i == 'U') {
2045                                 cprintf("Subject: %s%s", mptr, nl);
2046                                 subject_found = 1;
2047                         }
2048                         else if (i == 'I')
2049                                 safestrncpy(mid, mptr, sizeof_mid); /// TODO: detect @ here and copy @nodename in if not found.
2050                         else if (i == 'F')
2051                                 safestrncpy(fuser, mptr, sizeof_fuser);
2052                         /* else if (i == 'O')
2053                            cprintf("X-Citadel-Room: %s%s",
2054                            mptr, nl); */
2055                         else if (i == 'N')
2056                                 safestrncpy(snode, mptr, sizeof_snode);
2057                         else if (i == 'R')
2058                         {
2059                                 if (haschar(mptr, '@') == 0)
2060                                 {
2061                                         sanitize_truncated_recipient(mptr);
2062                                         cprintf("To: %s@%s", mptr, config.c_fqdn);
2063                                         cprintf("%s", nl);
2064                                 }
2065                                 else
2066                                 {
2067                                         if ((flags & QP_EADDR) != 0) {
2068                                                 mptr = qp_encode_email_addrs(mptr);
2069                                         }
2070                                         sanitize_truncated_recipient(mptr);
2071                                         cprintf("To: %s", mptr);
2072                                         cprintf("%s", nl);
2073                                 }
2074                         }
2075                         else if (i == 'T') {
2076                                 datestring(datestamp, sizeof datestamp,
2077                                            atol(mptr), DATESTRING_RFC822);
2078                                 cprintf("Date: %s%s", datestamp, nl);
2079                         }
2080                         else if (i == 'W') {
2081                                 cprintf("References: ");
2082                                 k = num_tokens(mptr, '|');
2083                                 for (j=0; j<k; ++j) {
2084                                         extract_token(buf, mptr, j, '|', sizeof buf);
2085                                         cprintf("<%s>", buf);
2086                                         if (j == (k-1)) {
2087                                                 cprintf("%s", nl);
2088                                         }
2089                                         else {
2090                                                 cprintf(" ");
2091                                         }
2092                                 }
2093                         }
2094                         else if (i == 'K') {
2095                                 hptr = mptr;
2096                                 while ((*hptr != '\0') && isspace(*hptr))
2097                                         hptr ++;
2098                                 if (!IsEmptyStr(hptr))
2099                                         cprintf("Reply-To: %s%s", mptr, nl);
2100                         }
2101                         if (mptr != mpptr)
2102                                 free (mptr);
2103                 }
2104         }
2105         if (subject_found == 0) {
2106                 cprintf("Subject: (no subject)%s", nl);
2107         }
2108 }
2109
2110
2111 void Dump_RFC822HeadersBody(
2112         struct CtdlMessage *TheMessage,
2113         int headers_only,       /* eschew the message body? */
2114         int flags,              /* should the bessage be exported clean? */
2115
2116         const char *nl)
2117 {
2118         cit_uint8_t prev_ch;
2119         int eoh = 0;
2120         const char *StartOfText = StrBufNOTNULL;
2121         char outbuf[1024];
2122         int outlen = 0;
2123         int nllen = strlen(nl);
2124         char *mptr;
2125
2126         mptr = TheMessage->cm_fields['M'];
2127
2128
2129         prev_ch = '\0';
2130         while (*mptr != '\0') {
2131                 if (*mptr == '\r') {
2132                         /* do nothing */
2133                 }
2134                 else {
2135                         if ((!eoh) &&
2136                             (*mptr == '\n'))
2137                         {
2138                                 eoh = (*(mptr+1) == '\r') && (*(mptr+2) == '\n');
2139                                 if (!eoh)
2140                                         eoh = *(mptr+1) == '\n';
2141                                 if (eoh)
2142                                 {
2143                                         StartOfText = mptr;
2144                                         StartOfText = strchr(StartOfText, '\n');
2145                                         StartOfText = strchr(StartOfText, '\n');
2146                                 }
2147                         }
2148                         if (((headers_only == HEADERS_NONE) && (mptr >= StartOfText)) ||
2149                             ((headers_only == HEADERS_ONLY) && (mptr < StartOfText)) ||
2150                             ((headers_only != HEADERS_NONE) &&
2151                              (headers_only != HEADERS_ONLY))
2152                                 ) {
2153                                 if (*mptr == '\n') {
2154                                         memcpy(&outbuf[outlen], nl, nllen);
2155                                         outlen += nllen;
2156                                         outbuf[outlen] = '\0';
2157                                 }
2158                                 else {
2159                                         outbuf[outlen++] = *mptr;
2160                                 }
2161                         }
2162                 }
2163                 if (flags & ESC_DOT)
2164                 {
2165                         if ((prev_ch == '\n') &&
2166                             (*mptr == '.') &&
2167                             ((*(mptr+1) == '\r') || (*(mptr+1) == '\n')))
2168                         {
2169                                 outbuf[outlen++] = '.';
2170                         }
2171                         prev_ch = *mptr;
2172                 }
2173                 ++mptr;
2174                 if (outlen > 1000) {
2175                         if (client_write(outbuf, outlen) == -1)
2176                         {
2177                                 struct CitContext *CCC = CC;
2178                                 MSGM_syslog(LOG_ERR, "Dump_RFC822HeadersBody(): aborting due to write failure.\n");
2179                                 return;
2180                         }
2181                         outlen = 0;
2182                 }
2183         }
2184         if (outlen > 0) {
2185                 client_write(outbuf, outlen);
2186         }
2187 }
2188
2189
2190
2191 /* If the format type on disk is 1 (fixed-format), then we want
2192  * everything to be output completely literally ... regardless of
2193  * what message transfer format is in use.
2194  */
2195 void DumpFormatFixed(
2196         struct CtdlMessage *TheMessage,
2197         int mode,               /* how would you like that message? */
2198         const char *nl)
2199 {
2200         cit_uint8_t ch;
2201         char buf[SIZ];
2202         int buflen;
2203         int xlline = 0;
2204         int nllen = strlen (nl);
2205         char *mptr;
2206
2207         mptr = TheMessage->cm_fields['M'];
2208
2209         if (mode == MT_MIME) {
2210                 cprintf("Content-type: text/plain\n\n");
2211         }
2212         *buf = '\0';
2213         buflen = 0;
2214         while (ch = *mptr++, ch > 0) {
2215                 if (ch == '\n')
2216                         ch = '\r';
2217
2218                 if ((buflen > 250) && (!xlline)){
2219                         int tbuflen;
2220                         tbuflen = buflen;
2221
2222                         while ((buflen > 0) &&
2223                                (!isspace(buf[buflen])))
2224                                 buflen --;
2225                         if (buflen == 0) {
2226                                 xlline = 1;
2227                         }
2228                         else {
2229                                 mptr -= tbuflen - buflen;
2230                                 buf[buflen] = '\0';
2231                                 ch = '\r';
2232                         }
2233                 }
2234                 /* if we reach the outer bounds of our buffer,
2235                    abort without respect what whe purge. */
2236                 if (xlline &&
2237                     ((isspace(ch)) ||
2238                      (buflen > SIZ - nllen - 2)))
2239                         ch = '\r';
2240
2241                 if (ch == '\r') {
2242                         memcpy (&buf[buflen], nl, nllen);
2243                         buflen += nllen;
2244                         buf[buflen] = '\0';
2245
2246                         if (client_write(buf, buflen) == -1)
2247                         {
2248                                 struct CitContext *CCC = CC;
2249                                 MSGM_syslog(LOG_ERR, "DumpFormatFixed(): aborting due to write failure.\n");
2250                                 return;
2251                         }
2252                         *buf = '\0';
2253                         buflen = 0;
2254                         xlline = 0;
2255                 } else {
2256                         buf[buflen] = ch;
2257                         buflen++;
2258                 }
2259         }
2260         buf[buflen] = '\0';
2261         if (!IsEmptyStr(buf))
2262                 cprintf("%s%s", buf, nl);
2263 }
2264
2265 /*
2266  * Get a message off disk.  (returns om_* values found in msgbase.h)
2267  */
2268 int CtdlOutputPreLoadedMsg(
2269                 struct CtdlMessage *TheMessage,
2270                 int mode,               /* how would you like that message? */
2271                 int headers_only,       /* eschew the message body? */
2272                 int do_proto,           /* do Citadel protocol responses? */
2273                 int crlf,               /* Use CRLF newlines instead of LF? */
2274                 int flags               /* should the bessage be exported clean? */
2275 ) {
2276         struct CitContext *CCC = CC;
2277         int i;
2278         char *mptr = NULL;
2279         const char *nl; /* newline string */
2280         struct ma_info ma;
2281
2282         /* Buffers needed for RFC822 translation.  These are all filled
2283          * using functions that are bounds-checked, and therefore we can
2284          * make them substantially smaller than SIZ.
2285          */
2286         char suser[100];
2287         char luser[100];
2288         char fuser[100];
2289         char snode[100];
2290         char mid[100];
2291
2292         MSG_syslog(LOG_DEBUG, "CtdlOutputPreLoadedMsg(TheMessage=%s, %d, %d, %d, %d\n",
2293                    ((TheMessage == NULL) ? "NULL" : "not null"),
2294                    mode, headers_only, do_proto, crlf);
2295
2296         strcpy(mid, "unknown");
2297         nl = (crlf ? "\r\n" : "\n");
2298
2299         if (!is_valid_message(TheMessage)) {
2300                 MSGM_syslog(LOG_ERR,
2301                             "ERROR: invalid preloaded message for output\n");
2302                 cit_backtrace ();
2303                 return(om_no_such_msg);
2304         }
2305
2306         /* Suppress envelope recipients if required to avoid disclosing BCC addresses.
2307          * Pad it with spaces in order to avoid changing the RFC822 length of the message.
2308          */
2309         if ( (flags & SUPPRESS_ENV_TO) && (TheMessage->cm_fields['V'] != NULL) ) {
2310                 memset(TheMessage->cm_fields['V'], ' ', strlen(TheMessage->cm_fields['V']));
2311         }
2312
2313         /* Are we downloading a MIME component? */
2314         if (mode == MT_DOWNLOAD) {
2315                 if (TheMessage->cm_format_type != FMT_RFC822) {
2316                         if (do_proto)
2317                                 cprintf("%d This is not a MIME message.\n",
2318                                 ERROR + ILLEGAL_VALUE);
2319                 } else if (CCC->download_fp != NULL) {
2320                         if (do_proto) cprintf(
2321                                 "%d You already have a download open.\n",
2322                                 ERROR + RESOURCE_BUSY);
2323                 } else {
2324                         /* Parse the message text component */
2325                         mptr = TheMessage->cm_fields['M'];
2326                         mime_parser(mptr, NULL, *mime_download, NULL, NULL, NULL, 0);
2327                         /* If there's no file open by this time, the requested
2328                          * section wasn't found, so print an error
2329                          */
2330                         if (CCC->download_fp == NULL) {
2331                                 if (do_proto) cprintf(
2332                                         "%d Section %s not found.\n",
2333                                         ERROR + FILE_NOT_FOUND,
2334                                         CCC->download_desired_section);
2335                         }
2336                 }
2337                 return((CCC->download_fp != NULL) ? om_ok : om_mime_error);
2338         }
2339
2340         /* MT_SPEW_SECTION is like MT_DOWNLOAD except it outputs the whole MIME part
2341          * in a single server operation instead of opening a download file.
2342          */
2343         if (mode == MT_SPEW_SECTION) {
2344                 if (TheMessage->cm_format_type != FMT_RFC822) {
2345                         if (do_proto)
2346                                 cprintf("%d This is not a MIME message.\n",
2347                                 ERROR + ILLEGAL_VALUE);
2348                 } else {
2349                         /* Parse the message text component */
2350                         int found_it = 0;
2351
2352                         mptr = TheMessage->cm_fields['M'];
2353                         mime_parser(mptr, NULL, *mime_spew_section, NULL, NULL, (void *)&found_it, 0);
2354                         /* If section wasn't found, print an error
2355                          */
2356                         if (!found_it) {
2357                                 if (do_proto) cprintf(
2358                                         "%d Section %s not found.\n",
2359                                         ERROR + FILE_NOT_FOUND,
2360                                         CCC->download_desired_section);
2361                         }
2362                 }
2363                 return((CCC->download_fp != NULL) ? om_ok : om_mime_error);
2364         }
2365
2366         /* now for the user-mode message reading loops */
2367         if (do_proto) cprintf("%d msg:\n", LISTING_FOLLOWS);
2368
2369         /* Does the caller want to skip the headers? */
2370         if (headers_only == HEADERS_NONE) goto START_TEXT;
2371
2372         /* Tell the client which format type we're using. */
2373         if ( (mode == MT_CITADEL) && (do_proto) ) {
2374                 cprintf("type=%d\n", TheMessage->cm_format_type);
2375         }
2376
2377         /* nhdr=yes means that we're only displaying headers, no body */
2378         if ( (TheMessage->cm_anon_type == MES_ANONONLY)
2379            && ((mode == MT_CITADEL) || (mode == MT_MIME))
2380            && (do_proto)
2381            ) {
2382                 cprintf("nhdr=yes\n");
2383         }
2384
2385         if ((mode == MT_CITADEL) || (mode == MT_MIME))
2386                 OutputCtdlMsgHeaders(TheMessage, do_proto);
2387
2388
2389         /* begin header processing loop for RFC822 transfer format */
2390         strcpy(suser, "");
2391         strcpy(luser, "");
2392         strcpy(fuser, "");
2393         strcpy(snode, NODENAME);
2394         if (mode == MT_RFC822)
2395                 OutputRFC822MsgHeaders(
2396                         TheMessage,
2397                         flags,
2398                         nl,
2399                         mid, sizeof(mid),
2400                         suser, sizeof(suser),
2401                         luser, sizeof(luser),
2402                         fuser, sizeof(fuser),
2403                         snode, sizeof(snode)
2404                         );
2405
2406
2407         for (i=0; !IsEmptyStr(&suser[i]); ++i) {
2408                 suser[i] = tolower(suser[i]);
2409                 if (!isalnum(suser[i])) suser[i]='_';
2410         }
2411
2412         if (mode == MT_RFC822) {
2413                 if (!strcasecmp(snode, NODENAME)) {
2414                         safestrncpy(snode, FQDN, sizeof snode);
2415                 }
2416
2417                 /* Construct a fun message id */
2418                 cprintf("Message-ID: <%s", mid);/// todo: this possibly breaks threadding mails.
2419                 if (strchr(mid, '@')==NULL) {
2420                         cprintf("@%s", snode);
2421                 }
2422                 cprintf(">%s", nl);
2423
2424                 if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONONLY)) {
2425                         cprintf("From: \"----\" <x@x.org>%s", nl);
2426                 }
2427                 else if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONOPT)) {
2428                         cprintf("From: \"anonymous\" <x@x.org>%s", nl);
2429                 }
2430                 else if (!IsEmptyStr(fuser)) {
2431                         cprintf("From: \"%s\" <%s>%s", luser, fuser, nl);
2432                 }
2433                 else {
2434                         cprintf("From: \"%s\" <%s@%s>%s", luser, suser, snode, nl);
2435                 }
2436
2437                 /* Blank line signifying RFC822 end-of-headers */
2438                 if (TheMessage->cm_format_type != FMT_RFC822) {
2439                         cprintf("%s", nl);
2440                 }
2441         }
2442
2443         /* end header processing loop ... at this point, we're in the text */
2444 START_TEXT:
2445         if (headers_only == HEADERS_FAST) goto DONE;
2446
2447         /* Tell the client about the MIME parts in this message */
2448         if (TheMessage->cm_format_type == FMT_RFC822) {
2449                 if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
2450                         mptr = TheMessage->cm_fields['M'];
2451                         memset(&ma, 0, sizeof(struct ma_info));
2452                         mime_parser(mptr, NULL,
2453                                 (do_proto ? *list_this_part : NULL),
2454                                 (do_proto ? *list_this_pref : NULL),
2455                                 (do_proto ? *list_this_suff : NULL),
2456                                 (void *)&ma, 1);
2457                 }
2458                 else if (mode == MT_RFC822) {   /* unparsed RFC822 dump */
2459                         Dump_RFC822HeadersBody(
2460                                 TheMessage,
2461                                 headers_only,
2462                                 flags,
2463                                 nl);
2464                         goto DONE;
2465                 }
2466         }
2467
2468         if (headers_only == HEADERS_ONLY) {
2469                 goto DONE;
2470         }
2471
2472         /* signify start of msg text */
2473         if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
2474                 if (do_proto) cprintf("text\n");
2475         }
2476
2477         if (TheMessage->cm_format_type == FMT_FIXED)
2478                 DumpFormatFixed(
2479                         TheMessage,
2480                         mode,           /* how would you like that message? */
2481                         nl);
2482
2483         /* If the message on disk is format 0 (Citadel vari-format), we
2484          * output using the formatter at 80 columns.  This is the final output
2485          * form if the transfer format is RFC822, but if the transfer format
2486          * is Citadel proprietary, it'll still work, because the indentation
2487          * for new paragraphs is correct and the client will reformat the
2488          * message to the reader's screen width.
2489          */
2490         if (TheMessage->cm_format_type == FMT_CITADEL) {
2491                 mptr = TheMessage->cm_fields['M'];
2492
2493                 if (mode == MT_MIME) {
2494                         cprintf("Content-type: text/x-citadel-variformat\n\n");
2495                 }
2496                 memfmout(mptr, nl);
2497         }
2498
2499         /* If the message on disk is format 4 (MIME), we've gotta hand it
2500          * off to the MIME parser.  The client has already been told that
2501          * this message is format 1 (fixed format), so the callback function
2502          * we use will display those parts as-is.
2503          */
2504         if (TheMessage->cm_format_type == FMT_RFC822) {
2505                 memset(&ma, 0, sizeof(struct ma_info));
2506
2507                 if (mode == MT_MIME) {
2508                         ma.use_fo_hooks = 0;
2509                         strcpy(ma.chosen_part, "1");
2510                         ma.chosen_pref = 9999;
2511                         ma.dont_decode = CCC->msg4_dont_decode;
2512                         mime_parser(mptr, NULL,
2513                                 *choose_preferred, *fixed_output_pre,
2514                                 *fixed_output_post, (void *)&ma, 1);
2515                         mime_parser(mptr, NULL,
2516                                 *output_preferred, NULL, NULL, (void *)&ma, 1);
2517                 }
2518                 else {
2519                         ma.use_fo_hooks = 1;
2520                         mime_parser(mptr, NULL,
2521                                 *fixed_output, *fixed_output_pre,
2522                                 *fixed_output_post, (void *)&ma, 0);
2523                 }
2524
2525         }
2526
2527 DONE:   /* now we're done */
2528         if (do_proto) cprintf("000\n");
2529         return(om_ok);
2530 }
2531
2532
2533 /*
2534  * display a message (mode 0 - Citadel proprietary)
2535  */
2536 void cmd_msg0(char *cmdbuf)
2537 {
2538         long msgid;
2539         int headers_only = HEADERS_ALL;
2540
2541         msgid = extract_long(cmdbuf, 0);
2542         headers_only = extract_int(cmdbuf, 1);
2543
2544         CtdlOutputMsg(msgid, MT_CITADEL, headers_only, 1, 0, NULL, 0);
2545         return;
2546 }
2547
2548
2549 /*
2550  * display a message (mode 2 - RFC822)
2551  */
2552 void cmd_msg2(char *cmdbuf)
2553 {
2554         long msgid;
2555         int headers_only = HEADERS_ALL;
2556
2557         msgid = extract_long(cmdbuf, 0);
2558         headers_only = extract_int(cmdbuf, 1);
2559
2560         CtdlOutputMsg(msgid, MT_RFC822, headers_only, 1, 1, NULL, 0);
2561 }
2562
2563
2564
2565 /*
2566  * display a message (mode 3 - IGnet raw format - internal programs only)
2567  */
2568 void cmd_msg3(char *cmdbuf)
2569 {
2570         long msgnum;
2571         struct CtdlMessage *msg = NULL;
2572         struct ser_ret smr;
2573
2574         if (CC->internal_pgm == 0) {
2575                 cprintf("%d This command is for internal programs only.\n",
2576                         ERROR + HIGHER_ACCESS_REQUIRED);
2577                 return;
2578         }
2579
2580         msgnum = extract_long(cmdbuf, 0);
2581         msg = CtdlFetchMessage(msgnum, 1);
2582         if (msg == NULL) {
2583                 cprintf("%d Message %ld not found.\n",
2584                         ERROR + MESSAGE_NOT_FOUND, msgnum);
2585                 return;
2586         }
2587
2588         serialize_message(&smr, msg);
2589         CtdlFreeMessage(msg);
2590
2591         if (smr.len == 0) {
2592                 cprintf("%d Unable to serialize message\n",
2593                         ERROR + INTERNAL_ERROR);
2594                 return;
2595         }
2596
2597         cprintf("%d %ld\n", BINARY_FOLLOWS, (long)smr.len);
2598         client_write((char *)smr.ser, (int)smr.len);
2599         free(smr.ser);
2600 }
2601
2602
2603
2604 /*
2605  * Display a message using MIME content types
2606  */
2607 void cmd_msg4(char *cmdbuf)
2608 {
2609         long msgid;
2610         char section[64];
2611
2612         msgid = extract_long(cmdbuf, 0);
2613         extract_token(section, cmdbuf, 1, '|', sizeof section);
2614         CtdlOutputMsg(msgid, MT_MIME, 0, 1, 0, (section[0] ? section : NULL) , 0);
2615 }
2616
2617
2618
2619 /*
2620  * Client tells us its preferred message format(s)
2621  */
2622 void cmd_msgp(char *cmdbuf)
2623 {
2624         if (!strcasecmp(cmdbuf, "dont_decode")) {
2625                 CC->msg4_dont_decode = 1;
2626                 cprintf("%d MSG4 will not pre-decode messages.\n", CIT_OK);
2627         }
2628         else {
2629                 safestrncpy(CC->preferred_formats, cmdbuf, sizeof(CC->preferred_formats));
2630                 cprintf("%d Preferred MIME formats have been set.\n", CIT_OK);
2631         }
2632 }
2633
2634
2635 /*
2636  * Open a component of a MIME message as a download file
2637  */
2638 void cmd_opna(char *cmdbuf)
2639 {
2640         long msgid;
2641         char desired_section[128];
2642
2643         msgid = extract_long(cmdbuf, 0);
2644         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2645         safestrncpy(CC->download_desired_section, desired_section,
2646                 sizeof CC->download_desired_section);
2647         CtdlOutputMsg(msgid, MT_DOWNLOAD, 0, 1, 1, NULL, 0);
2648 }
2649
2650
2651 /*
2652  * Open a component of a MIME message and transmit it all at once
2653  */
2654 void cmd_dlat(char *cmdbuf)
2655 {
2656         long msgid;
2657         char desired_section[128];
2658
2659         msgid = extract_long(cmdbuf, 0);
2660         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2661         safestrncpy(CC->download_desired_section, desired_section,
2662                 sizeof CC->download_desired_section);
2663         CtdlOutputMsg(msgid, MT_SPEW_SECTION, 0, 1, 1, NULL, 0);
2664 }
2665
2666
2667 /*
2668  * Save one or more message pointers into a specified room
2669  * (Returns 0 for success, nonzero for failure)
2670  * roomname may be NULL to use the current room
2671  *
2672  * Note that the 'supplied_msg' field may be set to NULL, in which case
2673  * the message will be fetched from disk, by number, if we need to perform
2674  * replication checks.  This adds an additional database read, so if the
2675  * caller already has the message in memory then it should be supplied.  (Obviously
2676  * this mode of operation only works if we're saving a single message.)
2677  */
2678 int CtdlSaveMsgPointersInRoom(char *roomname, long newmsgidlist[], int num_newmsgs,
2679                         int do_repl_check, struct CtdlMessage *supplied_msg, int suppress_refcount_adj
2680 ) {
2681         struct CitContext *CCC = CC;
2682         int i, j, unique;
2683         char hold_rm[ROOMNAMELEN];
2684         struct cdbdata *cdbfr;
2685         int num_msgs;
2686         long *msglist;
2687         long highest_msg = 0L;
2688
2689         long msgid = 0;
2690         struct CtdlMessage *msg = NULL;
2691
2692         long *msgs_to_be_merged = NULL;
2693         int num_msgs_to_be_merged = 0;
2694
2695         MSG_syslog(LOG_DEBUG,
2696                    "CtdlSaveMsgPointersInRoom(room=%s, num_msgs=%d, repl=%d, suppress_rca=%d)\n",
2697                    roomname, num_newmsgs, do_repl_check, suppress_refcount_adj
2698         );
2699
2700         strcpy(hold_rm, CCC->room.QRname);
2701
2702         /* Sanity checks */
2703         if (newmsgidlist == NULL) return(ERROR + INTERNAL_ERROR);
2704         if (num_newmsgs < 1) return(ERROR + INTERNAL_ERROR);
2705         if (num_newmsgs > 1) supplied_msg = NULL;
2706
2707         /* Now the regular stuff */
2708         if (CtdlGetRoomLock(&CCC->room,
2709            ((roomname != NULL) ? roomname : CCC->room.QRname) )
2710            != 0) {
2711                 MSG_syslog(LOG_ERR, "No such room <%s>\n", roomname);
2712                 return(ERROR + ROOM_NOT_FOUND);
2713         }
2714
2715
2716         msgs_to_be_merged = malloc(sizeof(long) * num_newmsgs);
2717         num_msgs_to_be_merged = 0;
2718
2719
2720         cdbfr = cdb_fetch(CDB_MSGLISTS, &CCC->room.QRnumber, sizeof(long));
2721         if (cdbfr == NULL) {
2722                 msglist = NULL;
2723                 num_msgs = 0;
2724         } else {
2725                 msglist = (long *) cdbfr->ptr;
2726                 cdbfr->ptr = NULL;      /* CtdlSaveMsgPointerInRoom() now owns this memory */
2727                 num_msgs = cdbfr->len / sizeof(long);
2728                 cdb_free(cdbfr);
2729         }
2730
2731
2732         /* Create a list of msgid's which were supplied by the caller, but do
2733          * not already exist in the target room.  It is absolutely taboo to
2734          * have more than one reference to the same message in a room.
2735          */
2736         for (i=0; i<num_newmsgs; ++i) {
2737                 unique = 1;
2738                 if (num_msgs > 0) for (j=0; j<num_msgs; ++j) {
2739                         if (msglist[j] == newmsgidlist[i]) {
2740                                 unique = 0;
2741                         }
2742                 }
2743                 if (unique) {
2744                         msgs_to_be_merged[num_msgs_to_be_merged++] = newmsgidlist[i];
2745                 }
2746         }
2747
2748         MSG_syslog(LOG_DEBUG, "%d unique messages to be merged\n", num_msgs_to_be_merged);
2749
2750         /*
2751          * Now merge the new messages
2752          */
2753         msglist = realloc(msglist, (sizeof(long) * (num_msgs + num_msgs_to_be_merged)) );
2754         if (msglist == NULL) {
2755                 MSGM_syslog(LOG_ALERT, "ERROR: can't realloc message list!\n");
2756                 free(msgs_to_be_merged);
2757                 return (ERROR + INTERNAL_ERROR);
2758         }
2759         memcpy(&msglist[num_msgs], msgs_to_be_merged, (sizeof(long) * num_msgs_to_be_merged) );
2760         num_msgs += num_msgs_to_be_merged;
2761
2762         /* Sort the message list, so all the msgid's are in order */
2763         num_msgs = sort_msglist(msglist, num_msgs);
2764
2765         /* Determine the highest message number */
2766         highest_msg = msglist[num_msgs - 1];
2767
2768         /* Write it back to disk. */
2769         cdb_store(CDB_MSGLISTS, &CCC->room.QRnumber, (int)sizeof(long),
2770                   msglist, (int)(num_msgs * sizeof(long)));
2771
2772         /* Free up the memory we used. */
2773         free(msglist);
2774
2775         /* Update the highest-message pointer and unlock the room. */
2776         CCC->room.QRhighest = highest_msg;
2777         CtdlPutRoomLock(&CCC->room);
2778
2779         /* Perform replication checks if necessary */
2780         if ( (DoesThisRoomNeedEuidIndexing(&CCC->room)) && (do_repl_check) ) {
2781                 MSGM_syslog(LOG_DEBUG, "CtdlSaveMsgPointerInRoom() doing repl checks\n");
2782
2783                 for (i=0; i<num_msgs_to_be_merged; ++i) {
2784                         msgid = msgs_to_be_merged[i];
2785
2786                         if (supplied_msg != NULL) {
2787                                 msg = supplied_msg;
2788                         }
2789                         else {
2790                                 msg = CtdlFetchMessage(msgid, 0);
2791                         }
2792
2793                         if (msg != NULL) {
2794                                 ReplicationChecks(msg);
2795
2796                                 /* If the message has an Exclusive ID, index that... */
2797                                 if (msg->cm_fields['E'] != NULL) {
2798                                         index_message_by_euid(msg->cm_fields['E'], &CCC->room, msgid);
2799                                 }
2800
2801                                 /* Free up the memory we may have allocated */
2802                                 if (msg != supplied_msg) {
2803                                         CtdlFreeMessage(msg);
2804                                 }
2805                         }
2806
2807                 }
2808         }
2809
2810         else {
2811                 MSGM_syslog(LOG_DEBUG, "CtdlSaveMsgPointerInRoom() skips repl checks\n");
2812         }
2813
2814         /* Submit this room for processing by hooks */
2815         PerformRoomHooks(&CCC->room);
2816
2817         /* Go back to the room we were in before we wandered here... */
2818         CtdlGetRoom(&CCC->room, hold_rm);
2819
2820         /* Bump the reference count for all messages which were merged */
2821         if (!suppress_refcount_adj) {
2822                 AdjRefCountList(msgs_to_be_merged, num_msgs_to_be_merged, +1);
2823         }
2824
2825         /* Free up memory... */
2826         if (msgs_to_be_merged != NULL) {
2827                 free(msgs_to_be_merged);
2828         }
2829
2830         /* Return success. */
2831         return (0);
2832 }
2833
2834
2835 /*
2836  * This is the same as CtdlSaveMsgPointersInRoom() but it only accepts
2837  * a single message.
2838  */
2839 int CtdlSaveMsgPointerInRoom(char *roomname, long msgid,
2840                              int do_repl_check, struct CtdlMessage *supplied_msg)
2841 {
2842         return CtdlSaveMsgPointersInRoom(roomname, &msgid, 1, do_repl_check, supplied_msg, 0);
2843 }
2844
2845
2846
2847
2848 /*
2849  * Message base operation to save a new message to the message store
2850  * (returns new message number)
2851  *
2852  * This is the back end for CtdlSubmitMsg() and should not be directly
2853  * called by server-side modules.
2854  *
2855  */
2856 long send_message(struct CtdlMessage *msg) {
2857         struct CitContext *CCC = CC;
2858         long newmsgid;
2859         long retval;
2860         char msgidbuf[256];
2861         struct ser_ret smr;
2862         int is_bigmsg = 0;
2863         char *holdM = NULL;
2864
2865         /* Get a new message number */
2866         newmsgid = get_new_message_number();
2867         snprintf(msgidbuf, sizeof msgidbuf, "%08lX-%08lX@%s",
2868                  (long unsigned int) time(NULL),
2869                  (long unsigned int) newmsgid,
2870                  config.c_fqdn
2871                 );
2872
2873         /* Generate an ID if we don't have one already */
2874         if (msg->cm_fields['I']==NULL) {
2875                 msg->cm_fields['I'] = strdup(msgidbuf);
2876         }
2877
2878         /* If the message is big, set its body aside for storage elsewhere */
2879         if (msg->cm_fields['M'] != NULL) {
2880                 if (strlen(msg->cm_fields['M']) > BIGMSG) {
2881                         is_bigmsg = 1;
2882                         holdM = msg->cm_fields['M'];
2883                         msg->cm_fields['M'] = NULL;
2884                 }
2885         }
2886
2887         /* Serialize our data structure for storage in the database */
2888         serialize_message(&smr, msg);
2889
2890         if (is_bigmsg) {
2891                 msg->cm_fields['M'] = holdM;
2892         }
2893
2894         if (smr.len == 0) {
2895                 cprintf("%d Unable to serialize message\n",
2896                         ERROR + INTERNAL_ERROR);
2897                 return (-1L);
2898         }
2899
2900         /* Write our little bundle of joy into the message base */
2901         if (cdb_store(CDB_MSGMAIN, &newmsgid, (int)sizeof(long),
2902                       smr.ser, smr.len) < 0) {
2903                 MSGM_syslog(LOG_ERR, "Can't store message\n");
2904                 retval = 0L;
2905         } else {
2906                 if (is_bigmsg) {
2907                         cdb_store(CDB_BIGMSGS,
2908                                   &newmsgid,
2909                                   (int)sizeof(long),
2910                                   holdM,
2911                                   (strlen(holdM) + 1)
2912                                 );
2913                 }
2914                 retval = newmsgid;
2915         }
2916
2917         /* Free the memory we used for the serialized message */
2918         free(smr.ser);
2919
2920         /* Return the *local* message ID to the caller
2921          * (even if we're storing an incoming network message)
2922          */
2923         return(retval);
2924 }
2925
2926
2927
2928 /*
2929  * Serialize a struct CtdlMessage into the format used on disk and network.
2930  *
2931  * This function loads up a "struct ser_ret" (defined in server.h) which
2932  * contains the length of the serialized message and a pointer to the
2933  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
2934  */
2935 void serialize_message(struct ser_ret *ret,             /* return values */
2936                        struct CtdlMessage *msg) /* unserialized msg */
2937 {
2938         struct CitContext *CCC = CC;
2939         size_t wlen, fieldlen;
2940         int i;
2941         static char *forder = FORDER;
2942
2943         /*
2944          * Check for valid message format
2945          */
2946         if (is_valid_message(msg) == 0) {
2947                 MSGM_syslog(LOG_ERR, "serialize_message() aborting due to invalid message\n");
2948                 ret->len = 0;
2949                 ret->ser = NULL;
2950                 return;
2951         }
2952
2953         ret->len = 3;
2954         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL)
2955                                      ret->len = ret->len +
2956                                              strlen(msg->cm_fields[(int)forder[i]]) + 2;
2957
2958         ret->ser = malloc(ret->len);
2959         if (ret->ser == NULL) {
2960                 MSG_syslog(LOG_ERR, "serialize_message() malloc(%ld) failed: %s\n",
2961                            (long)ret->len, strerror(errno));
2962                 ret->len = 0;
2963                 ret->ser = NULL;
2964                 return;
2965         }
2966
2967         ret->ser[0] = 0xFF;
2968         ret->ser[1] = msg->cm_anon_type;
2969         ret->ser[2] = msg->cm_format_type;
2970         wlen = 3;
2971
2972         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
2973                         fieldlen = strlen(msg->cm_fields[(int)forder[i]]);
2974                         ret->ser[wlen++] = (char)forder[i];
2975                         safestrncpy((char *)&ret->ser[wlen], msg->cm_fields[(int)forder[i]], fieldlen+1);
2976                         wlen = wlen + fieldlen + 1;
2977                 }
2978         if (ret->len != wlen) {
2979                 MSG_syslog(LOG_ERR, "ERROR: len=%ld wlen=%ld\n",
2980                            (long)ret->len, (long)wlen);
2981         }
2982
2983         return;
2984 }
2985
2986
2987 /*
2988  * Check to see if any messages already exist in the current room which
2989  * carry the same Exclusive ID as this one.  If any are found, delete them.
2990  */
2991 void ReplicationChecks(struct CtdlMessage *msg) {
2992         struct CitContext *CCC = CC;
2993         long old_msgnum = (-1L);
2994
2995         if (DoesThisRoomNeedEuidIndexing(&CCC->room) == 0) return;
2996
2997         MSG_syslog(LOG_DEBUG, "Performing replication checks in <%s>\n",
2998                    CCC->room.QRname);
2999
3000         /* No exclusive id?  Don't do anything. */
3001         if (msg == NULL) return;
3002         if (msg->cm_fields['E'] == NULL) return;
3003         if (IsEmptyStr(msg->cm_fields['E'])) return;
3004         /*MSG_syslog(LOG_DEBUG, "Exclusive ID: <%s> for room <%s>\n",
3005           msg->cm_fields['E'], CCC->room.QRname);*/
3006
3007         old_msgnum = CtdlLocateMessageByEuid(msg->cm_fields['E'], &CCC->room);
3008         if (old_msgnum > 0L) {
3009                 MSG_syslog(LOG_DEBUG, "ReplicationChecks() replacing message %ld\n", old_msgnum);
3010                 CtdlDeleteMessages(CCC->room.QRname, &old_msgnum, 1, "");
3011         }
3012 }
3013
3014
3015
3016 /*
3017  * Save a message to disk and submit it into the delivery system.
3018  */
3019 long CtdlSubmitMsg(struct CtdlMessage *msg,     /* message to save */
3020                    struct recptypes *recps,     /* recipients (if mail) */
3021                    const char *force,           /* force a particular room? */
3022                    int flags                    /* should the message be exported clean? */
3023         )
3024 {
3025         char submit_filename[128];
3026         char generated_timestamp[32];
3027         char hold_rm[ROOMNAMELEN];
3028         char actual_rm[ROOMNAMELEN];
3029         char force_room[ROOMNAMELEN];
3030         char content_type[SIZ];                 /* We have to learn this */
3031         char recipient[SIZ];
3032         const char *room;
3033         long newmsgid;
3034         const char *mptr = NULL;
3035         struct ctdluser userbuf;
3036         int a, i;
3037         struct MetaData smi;
3038         FILE *network_fp = NULL;
3039         static int seqnum = 1;
3040         struct CtdlMessage *imsg = NULL;
3041         char *instr = NULL;
3042         size_t instr_alloc = 0;
3043         struct ser_ret smr;
3044         char *hold_R, *hold_D;
3045         char *collected_addresses = NULL;
3046         struct addresses_to_be_filed *aptr = NULL;
3047         StrBuf *saved_rfc822_version = NULL;
3048         int qualified_for_journaling = 0;
3049         CitContext *CCC = MyContext();
3050         char bounce_to[1024] = "";
3051         int rv = 0;
3052
3053         MSGM_syslog(LOG_DEBUG, "CtdlSubmitMsg() called\n");
3054         if (is_valid_message(msg) == 0) return(-1);     /* self check */
3055
3056         /* If this message has no timestamp, we take the liberty of
3057          * giving it one, right now.
3058          */
3059         if (msg->cm_fields['T'] == NULL) {
3060                 snprintf(generated_timestamp, sizeof generated_timestamp, "%ld", (long)time(NULL));
3061                 msg->cm_fields['T'] = strdup(generated_timestamp);
3062         }
3063
3064         /* If this message has no path, we generate one.
3065          */
3066         if (msg->cm_fields['P'] == NULL) {
3067                 if (msg->cm_fields['A'] != NULL) {
3068                         msg->cm_fields['P'] = strdup(msg->cm_fields['A']);
3069                         for (a=0; !IsEmptyStr(&msg->cm_fields['P'][a]); ++a) {
3070                                 if (isspace(msg->cm_fields['P'][a])) {
3071                                         msg->cm_fields['P'][a] = ' ';
3072                                 }
3073                         }
3074                 }
3075                 else {
3076                         msg->cm_fields['P'] = strdup("unknown");
3077                 }
3078         }
3079
3080         if (force == NULL) {
3081                 strcpy(force_room, "");
3082         }
3083         else {
3084                 strcpy(force_room, force);
3085         }
3086
3087         /* Learn about what's inside, because it's what's inside that counts */
3088         if (msg->cm_fields['M'] == NULL) {
3089                 MSGM_syslog(LOG_ERR, "ERROR: attempt to save message with NULL body\n");
3090                 return(-2);
3091         }
3092
3093         switch (msg->cm_format_type) {
3094         case 0:
3095                 strcpy(content_type, "text/x-citadel-variformat");
3096                 break;
3097         case 1:
3098                 strcpy(content_type, "text/plain");
3099                 break;
3100         case 4:
3101                 strcpy(content_type, "text/plain");
3102                 mptr = bmstrcasestr(msg->cm_fields['M'], "Content-type:");
3103                 if (mptr != NULL) {
3104                         char *aptr;
3105                         safestrncpy(content_type, &mptr[13], sizeof content_type);
3106                         striplt(content_type);
3107                         aptr = content_type;
3108                         while (!IsEmptyStr(aptr)) {
3109                                 if ((*aptr == ';')
3110                                     || (*aptr == ' ')
3111                                     || (*aptr == 13)
3112                                     || (*aptr == 10)) {
3113                                         *aptr = 0;
3114                                 }
3115                                 else aptr++;
3116                         }
3117                 }
3118         }
3119
3120         /* Goto the correct room */
3121         room = (recps) ? CCC->room.QRname : SENTITEMS;
3122         MSG_syslog(LOG_DEBUG, "Selected room %s\n", room);
3123         strcpy(hold_rm, CCC->room.QRname);
3124         strcpy(actual_rm, CCC->room.QRname);
3125         if (recps != NULL) {
3126                 strcpy(actual_rm, SENTITEMS);
3127         }
3128
3129         /* If the user is a twit, move to the twit room for posting */
3130         if (TWITDETECT) {
3131                 if (CCC->user.axlevel == AxProbU) {
3132                         strcpy(hold_rm, actual_rm);
3133                         strcpy(actual_rm, config.c_twitroom);
3134                         MSGM_syslog(LOG_DEBUG, "Diverting to twit room\n");
3135                 }
3136         }
3137
3138         /* ...or if this message is destined for Aide> then go there. */
3139         if (!IsEmptyStr(force_room)) {
3140                 strcpy(actual_rm, force_room);
3141         }
3142
3143         MSG_syslog(LOG_INFO, "Final selection: %s (%s)\n", actual_rm, room);
3144         if (strcasecmp(actual_rm, CCC->room.QRname)) {
3145                 /* CtdlGetRoom(&CCC->room, actual_rm); */
3146                 CtdlUserGoto(actual_rm, 0, 1, NULL, NULL);
3147         }
3148
3149         /*
3150          * If this message has no O (room) field, generate one.
3151          */
3152         if (msg->cm_fields['O'] == NULL) {
3153                 msg->cm_fields['O'] = strdup(CCC->room.QRname);
3154         }
3155
3156         /* Perform "before save" hooks (aborting if any return nonzero) */
3157         MSGM_syslog(LOG_DEBUG, "Performing before-save hooks\n");
3158         if (PerformMessageHooks(msg, EVT_BEFORESAVE) > 0) return(-3);
3159
3160         /*
3161          * If this message has an Exclusive ID, and the room is replication
3162          * checking enabled, then do replication checks.
3163          */
3164         if (DoesThisRoomNeedEuidIndexing(&CCC->room)) {
3165                 ReplicationChecks(msg);
3166         }
3167
3168         /* Save it to disk */
3169         MSGM_syslog(LOG_DEBUG, "Saving to disk\n");
3170         newmsgid = send_message(msg);
3171         if (newmsgid <= 0L) return(-5);
3172
3173         /* Write a supplemental message info record.  This doesn't have to
3174          * be a critical section because nobody else knows about this message
3175          * yet.
3176          */
3177         MSGM_syslog(LOG_DEBUG, "Creating MetaData record\n");
3178         memset(&smi, 0, sizeof(struct MetaData));
3179         smi.meta_msgnum = newmsgid;
3180         smi.meta_refcount = 0;
3181         safestrncpy(smi.meta_content_type, content_type,
3182                     sizeof smi.meta_content_type);
3183
3184         /*
3185          * Measure how big this message will be when rendered as RFC822.
3186          * We do this for two reasons:
3187          * 1. We need the RFC822 length for the new metadata record, so the
3188          *    POP and IMAP services don't have to calculate message lengths
3189          *    while the user is waiting (multiplied by potentially hundreds
3190          *    or thousands of messages).
3191          * 2. If journaling is enabled, we will need an RFC822 version of the
3192          *    message to attach to the journalized copy.
3193          */
3194         if (CCC->redirect_buffer != NULL) {
3195                 MSGM_syslog(LOG_ALERT, "CCC->redirect_buffer is not NULL during message submission!\n");
3196                 abort();
3197         }
3198         CCC->redirect_buffer = NewStrBufPlain(NULL, SIZ);
3199         CtdlOutputPreLoadedMsg(msg, MT_RFC822, HEADERS_ALL, 0, 1, QP_EADDR);
3200         smi.meta_rfc822_length = StrLength(CCC->redirect_buffer);
3201         saved_rfc822_version = CCC->redirect_buffer;
3202         CCC->redirect_buffer = NULL;
3203
3204         PutMetaData(&smi);
3205
3206         /* Now figure out where to store the pointers */
3207         MSGM_syslog(LOG_DEBUG, "Storing pointers\n");
3208
3209         /* If this is being done by the networker delivering a private
3210          * message, we want to BYPASS saving the sender's copy (because there
3211          * is no local sender; it would otherwise go to the Trashcan).
3212          */
3213         if ((!CCC->internal_pgm) || (recps == NULL)) {
3214                 if (CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 1, msg) != 0) {
3215                         MSGM_syslog(LOG_ERR, "ERROR saving message pointer!\n");
3216                         CtdlSaveMsgPointerInRoom(config.c_aideroom, newmsgid, 0, msg);
3217                 }
3218         }
3219
3220         /* For internet mail, drop a copy in the outbound queue room */
3221         if ((recps != NULL) && (recps->num_internet > 0)) {
3222                 CtdlSaveMsgPointerInRoom(SMTP_SPOOLOUT_ROOM, newmsgid, 0, msg);
3223         }
3224
3225         /* If other rooms are specified, drop them there too. */
3226         if ((recps != NULL) && (recps->num_room > 0))
3227                 for (i=0; i<num_tokens(recps->recp_room, '|'); ++i) {
3228                         extract_token(recipient, recps->recp_room, i,
3229                                       '|', sizeof recipient);
3230                         MSG_syslog(LOG_DEBUG, "Delivering to room <%s>\n", recipient);///// xxxx
3231                         CtdlSaveMsgPointerInRoom(recipient, newmsgid, 0, msg);
3232                 }
3233
3234         /* Bump this user's messages posted counter. */
3235         MSGM_syslog(LOG_DEBUG, "Updating user\n");
3236         CtdlGetUserLock(&CCC->user, CCC->curr_user);
3237         CCC->user.posted = CCC->user.posted + 1;
3238         CtdlPutUserLock(&CCC->user);
3239
3240         /* Decide where bounces need to be delivered */
3241         if ((recps != NULL) && (recps->bounce_to != NULL)) {
3242                 safestrncpy(bounce_to, recps->bounce_to, sizeof bounce_to);
3243         }
3244         else if (CCC->logged_in) {
3245                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", CCC->user.fullname, config.c_nodename);
3246         }
3247         else {
3248                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", msg->cm_fields['A'], msg->cm_fields['N']);
3249         }
3250
3251         /* If this is private, local mail, make a copy in the
3252          * recipient's mailbox and bump the reference count.
3253          */
3254         if ((recps != NULL) && (recps->num_local > 0))
3255                 for (i=0; i<num_tokens(recps->recp_local, '|'); ++i) {
3256                         extract_token(recipient, recps->recp_local, i,
3257                                       '|', sizeof recipient);
3258                         MSG_syslog(LOG_DEBUG, "Delivering private local mail to <%s>\n",
3259                                recipient);
3260                         if (CtdlGetUser(&userbuf, recipient) == 0) {
3261                                 CtdlMailboxName(actual_rm, sizeof actual_rm, &userbuf, MAILROOM);
3262                                 CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 0, msg);
3263                                 CtdlBumpNewMailCounter(userbuf.usernum);
3264                                 if (!IsEmptyStr(config.c_funambol_host) || !IsEmptyStr(config.c_pager_program)) {
3265                                         /* Generate a instruction message for the Funambol notification
3266                                          * server, in the same style as the SMTP queue
3267                                          */
3268                                         instr_alloc = 1024;
3269                                         instr = malloc(instr_alloc);
3270                                         snprintf(instr, instr_alloc,
3271                                                  "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
3272                                                  "bounceto|%s\n",
3273                                                  SPOOLMIME, newmsgid, (long)time(NULL),
3274                                                  bounce_to
3275                                                 );
3276
3277                                         imsg = malloc(sizeof(struct CtdlMessage));
3278                                         memset(imsg, 0, sizeof(struct CtdlMessage));
3279                                         imsg->cm_magic = CTDLMESSAGE_MAGIC;
3280                                         imsg->cm_anon_type = MES_NORMAL;
3281                                         imsg->cm_format_type = FMT_RFC822;
3282                                         imsg->cm_fields['U'] = strdup("QMSG");
3283                                         imsg->cm_fields['A'] = strdup("Citadel");
3284                                         imsg->cm_fields['J'] = strdup("do not journal");
3285                                         imsg->cm_fields['M'] = instr;   /* imsg owns this memory now */
3286                                         imsg->cm_fields['2'] = strdup(recipient);
3287                                         CtdlSubmitMsg(imsg, NULL, FNBL_QUEUE_ROOM, 0);
3288                                         CtdlFreeMessage(imsg);
3289                                 }
3290                         }
3291                         else {
3292                                 MSG_syslog(LOG_DEBUG, "No user <%s>\n", recipient);
3293                                 CtdlSaveMsgPointerInRoom(config.c_aideroom, newmsgid, 0, msg);
3294                         }
3295                 }
3296
3297         /* Perform "after save" hooks */
3298         MSGM_syslog(LOG_DEBUG, "Performing after-save hooks\n");
3299         if (msg->cm_fields['3'] != NULL) free(msg->cm_fields['3']);
3300         msg->cm_fields['3'] = malloc(20);
3301         snprintf(msg->cm_fields['3'], 20, "%ld", newmsgid);
3302         PerformMessageHooks(msg, EVT_AFTERSAVE);
3303         free(msg->cm_fields['3']);
3304         msg->cm_fields['3'] = NULL;
3305
3306         /* For IGnet mail, we have to save a new copy into the spooler for
3307          * each recipient, with the R and D fields set to the recipient and
3308          * destination-node.  This has two ugly side effects: all other
3309          * recipients end up being unlisted in this recipient's copy of the
3310          * message, and it has to deliver multiple messages to the same
3311          * node.  We'll revisit this again in a year or so when everyone has
3312          * a network spool receiver that can handle the new style messages.
3313          */
3314         if ((recps != NULL) && (recps->num_ignet > 0))
3315                 for (i=0; i<num_tokens(recps->recp_ignet, '|'); ++i) {
3316                         extract_token(recipient, recps->recp_ignet, i,
3317                                       '|', sizeof recipient);
3318
3319                         hold_R = msg->cm_fields['R'];
3320                         hold_D = msg->cm_fields['D'];
3321                         msg->cm_fields['R'] = malloc(SIZ);
3322                         msg->cm_fields['D'] = malloc(128);
3323                         extract_token(msg->cm_fields['R'], recipient, 0, '@', SIZ);
3324                         extract_token(msg->cm_fields['D'], recipient, 1, '@', 128);
3325
3326                         serialize_message(&smr, msg);
3327                         if (smr.len > 0) {
3328                                 snprintf(submit_filename, sizeof submit_filename,
3329                                          "%s/netmail.%04lx.%04x.%04x",
3330                                          ctdl_netin_dir,
3331                                          (long) getpid(), CCC->cs_pid, ++seqnum);
3332                                 network_fp = fopen(submit_filename, "wb+");
3333                                 if (network_fp != NULL) {
3334                                         rv = fwrite(smr.ser, smr.len, 1, network_fp);
3335                                         if (rv == -1) {
3336                                                 MSG_syslog(LOG_EMERG, "CtdlSubmitMsg(): Couldn't write network spool file: %s\n",
3337                                                            strerror(errno));
3338                                         }
3339                                         fclose(network_fp);
3340                                 }
3341                                 free(smr.ser);
3342                         }
3343
3344                         free(msg->cm_fields['R']);
3345                         free(msg->cm_fields['D']);
3346                         msg->cm_fields['R'] = hold_R;
3347                         msg->cm_fields['D'] = hold_D;
3348                 }
3349
3350         /* Go back to the room we started from */
3351         MSG_syslog(LOG_DEBUG, "Returning to original room %s\n", hold_rm);
3352         if (strcasecmp(hold_rm, CCC->room.QRname))
3353                 CtdlUserGoto(hold_rm, 0, 1, NULL, NULL);
3354
3355         /* For internet mail, generate delivery instructions.
3356          * Yes, this is recursive.  Deal with it.  Infinite recursion does
3357          * not happen because the delivery instructions message does not
3358          * contain a recipient.
3359          */
3360         if ((recps != NULL) && (recps->num_internet > 0)) {
3361                 StrBuf *SpoolMsg = NewStrBuf();
3362                 long nTokens;
3363
3364                 MSGM_syslog(LOG_DEBUG, "Generating delivery instructions\n");
3365
3366                 StrBufPrintf(SpoolMsg,
3367                              "Content-type: "SPOOLMIME"\n"
3368                              "\n"
3369                              "msgid|%ld\n"
3370                              "submitted|%ld\n"
3371                              "bounceto|%s\n",
3372                              newmsgid,
3373                              (long)time(NULL),
3374                              bounce_to);
3375
3376                 if (recps->envelope_from != NULL) {
3377                         StrBufAppendBufPlain(SpoolMsg, HKEY("envelope_from|"), 0);
3378                         StrBufAppendBufPlain(SpoolMsg, recps->envelope_from, -1, 0);
3379                         StrBufAppendBufPlain(SpoolMsg, HKEY("\n"), 0);
3380                 }
3381                 if (recps->sending_room != NULL) {
3382                         StrBufAppendBufPlain(SpoolMsg, HKEY("source_room|"), 0);
3383                         StrBufAppendBufPlain(SpoolMsg, recps->sending_room, -1, 0);
3384                         StrBufAppendBufPlain(SpoolMsg, HKEY("\n"), 0);
3385                 }
3386
3387                 nTokens = num_tokens(recps->recp_internet, '|');
3388                 for (i = 0; i < nTokens; i++) {
3389                         long len;
3390                         len = extract_token(recipient, recps->recp_internet, i, '|', sizeof recipient);
3391                         if (len > 0) {
3392                                 StrBufAppendBufPlain(SpoolMsg, HKEY("remote|"), 0);
3393                                 StrBufAppendBufPlain(SpoolMsg, recipient, len, 0);
3394                                 StrBufAppendBufPlain(SpoolMsg, HKEY("|0||\n"), 0);
3395                         }
3396                 }
3397
3398                 imsg = malloc(sizeof(struct CtdlMessage));
3399                 memset(imsg, 0, sizeof(struct CtdlMessage));
3400                 imsg->cm_magic = CTDLMESSAGE_MAGIC;
3401                 imsg->cm_anon_type = MES_NORMAL;
3402                 imsg->cm_format_type = FMT_RFC822;
3403                 imsg->cm_fields['U'] = strdup("QMSG");
3404                 imsg->cm_fields['A'] = strdup("Citadel");
3405                 imsg->cm_fields['J'] = strdup("do not journal");
3406                 imsg->cm_fields['M'] = SmashStrBuf(&SpoolMsg);  /* imsg owns this memory now */
3407                 CtdlSubmitMsg(imsg, NULL, SMTP_SPOOLOUT_ROOM, QP_EADDR);
3408                 CtdlFreeMessage(imsg);
3409         }
3410
3411         /*
3412          * Any addresses to harvest for someone's address book?
3413          */
3414         if ( (CCC->logged_in) && (recps != NULL) ) {
3415                 collected_addresses = harvest_collected_addresses(msg);
3416         }
3417
3418         if (collected_addresses != NULL) {
3419                 aptr = (struct addresses_to_be_filed *)
3420                         malloc(sizeof(struct addresses_to_be_filed));
3421                 CtdlMailboxName(actual_rm, sizeof actual_rm,
3422                                 &CCC->user, USERCONTACTSROOM);
3423                 aptr->roomname = strdup(actual_rm);
3424                 aptr->collected_addresses = collected_addresses;
3425                 begin_critical_section(S_ATBF);
3426                 aptr->next = atbf;
3427                 atbf = aptr;
3428                 end_critical_section(S_ATBF);
3429         }
3430
3431         /*
3432          * Determine whether this message qualifies for journaling.
3433          */
3434         if (msg->cm_fields['J'] != NULL) {
3435                 qualified_for_journaling = 0;
3436         }
3437         else {
3438                 if (recps == NULL) {
3439                         qualified_for_journaling = config.c_journal_pubmsgs;
3440                 }
3441                 else if (recps->num_local + recps->num_ignet + recps->num_internet > 0) {
3442                         qualified_for_journaling = config.c_journal_email;
3443                 }
3444                 else {
3445                         qualified_for_journaling = config.c_journal_pubmsgs;
3446                 }
3447         }
3448
3449         /*
3450          * Do we have to perform journaling?  If so, hand off the saved
3451          * RFC822 version will be handed off to the journaler for background
3452          * submit.  Otherwise, we have to free the memory ourselves.
3453          */
3454         if (saved_rfc822_version != NULL) {
3455                 if (qualified_for_journaling) {
3456                         JournalBackgroundSubmit(msg, saved_rfc822_version, recps);
3457                 }
3458                 else {
3459                         FreeStrBuf(&saved_rfc822_version);
3460                 }
3461         }
3462
3463         /* Done. */
3464         return(newmsgid);
3465 }
3466
3467
3468
3469 void aide_message (char *text, char *subject)
3470 {
3471         quickie_message("Citadel",NULL,NULL,AIDEROOM,text,FMT_CITADEL,subject);
3472 }
3473
3474
3475 /*
3476  * Convenience function for generating small administrative messages.
3477  */
3478 void quickie_message(const char *from, const char *fromaddr, char *to, char *room, const char *text,
3479                      int format_type, const char *subject)
3480 {
3481         struct CtdlMessage *msg;
3482         struct recptypes *recp = NULL;
3483
3484         msg = malloc(sizeof(struct CtdlMessage));
3485         memset(msg, 0, sizeof(struct CtdlMessage));
3486         msg->cm_magic = CTDLMESSAGE_MAGIC;
3487         msg->cm_anon_type = MES_NORMAL;
3488         msg->cm_format_type = format_type;
3489
3490         if (from != NULL) {
3491                 msg->cm_fields['A'] = strdup(from);
3492         }
3493         else if (fromaddr != NULL) {
3494                 msg->cm_fields['A'] = strdup(fromaddr);
3495                 if (strchr(msg->cm_fields['A'], '@')) {
3496                         *strchr(msg->cm_fields['A'], '@') = 0;
3497                 }
3498         }
3499         else {
3500                 msg->cm_fields['A'] = strdup("Citadel");
3501         }
3502
3503         if (fromaddr != NULL) msg->cm_fields['F'] = strdup(fromaddr);
3504         if (room != NULL) msg->cm_fields['O'] = strdup(room);
3505         msg->cm_fields['N'] = strdup(NODENAME);
3506         if (to != NULL) {
3507                 msg->cm_fields['R'] = strdup(to);
3508                 recp = validate_recipients(to, NULL, 0);
3509         }
3510         if (subject != NULL) {
3511                 msg->cm_fields['U'] = strdup(subject);
3512         }
3513         msg->cm_fields['M'] = strdup(text);
3514
3515         CtdlSubmitMsg(msg, recp, room, 0);
3516         CtdlFreeMessage(msg);
3517         if (recp != NULL) free_recipients(recp);
3518 }
3519
3520
3521
3522 /*
3523  * Back end function used by CtdlMakeMessage() and similar functions
3524  */
3525 StrBuf *CtdlReadMessageBodyBuf(char *terminator,        /* token signalling EOT */
3526                                long tlen,
3527                                size_t maxlen,           /* maximum message length */
3528                                char *exist,             /* if non-null, append to it;
3529                                                            exist is ALWAYS freed  */
3530                                int crlf,                /* CRLF newlines instead of LF */
3531                                int *sock                /* socket handle or 0 for this session's client socket */
3532         )
3533 {
3534         StrBuf *Message;
3535         StrBuf *LineBuf;
3536         int flushing = 0;
3537         int finished = 0;
3538         int dotdot = 0;
3539
3540         LineBuf = NewStrBufPlain(NULL, SIZ);
3541         if (exist == NULL) {
3542                 Message = NewStrBufPlain(NULL, 4 * SIZ);
3543         }
3544         else {
3545                 Message = NewStrBufPlain(exist, -1);
3546                 free(exist);
3547         }
3548
3549         /* Do we need to change leading ".." to "." for SMTP escaping? */
3550         if ((tlen == 1) && (*terminator == '.')) {
3551                 dotdot = 1;
3552         }
3553
3554         /* read in the lines of message text one by one */
3555         do {
3556                 if (sock != NULL) {
3557                         if ((CtdlSockGetLine(sock, LineBuf, 5) < 0) ||
3558                             (*sock == -1))
3559                                 finished = 1;
3560                 }
3561                 else {
3562                         if (CtdlClientGetLine(LineBuf) < 0) finished = 1;
3563                 }
3564                 if ((StrLength(LineBuf) == tlen) &&
3565                     (!strcmp(ChrPtr(LineBuf), terminator)))
3566                         finished = 1;
3567
3568                 if ( (!flushing) && (!finished) ) {
3569                         if (crlf) {
3570                                 StrBufAppendBufPlain(LineBuf, HKEY("\r\n"), 0);
3571                         }
3572                         else {
3573                                 StrBufAppendBufPlain(LineBuf, HKEY("\n"), 0);
3574                         }
3575
3576                         /* Unescape SMTP-style input of two dots at the beginning of the line */
3577                         if ((dotdot) &&
3578                             (StrLength(LineBuf) == 2) &&
3579                             (!strcmp(ChrPtr(LineBuf), "..")))
3580                         {
3581                                 StrBufCutLeft(LineBuf, 1);
3582                         }
3583
3584                         StrBufAppendBuf(Message, LineBuf, 0);
3585                 }
3586
3587                 /* if we've hit the max msg length, flush the rest */
3588                 if (StrLength(Message) >= maxlen) flushing = 1;
3589
3590         } while (!finished);
3591         FreeStrBuf(&LineBuf);
3592         return Message;
3593 }
3594
3595 void DeleteAsyncMsg(ReadAsyncMsg **Msg)
3596 {
3597         if (*Msg == NULL)
3598                 return;
3599         FreeStrBuf(&(*Msg)->MsgBuf);
3600
3601         free(*Msg);
3602         *Msg = NULL;
3603 }
3604
3605 ReadAsyncMsg *NewAsyncMsg(const char *terminator,       /* token signalling EOT */
3606                           long tlen,
3607                           size_t maxlen,                /* maximum message length */
3608                           size_t expectlen,             /* if we expect a message, how long should it be? */
3609                           char *exist,                  /* if non-null, append to it;
3610                                                            exist is ALWAYS freed  */
3611                           long eLen,                    /* length of exist */
3612                           int crlf                      /* CRLF newlines instead of LF */
3613         )
3614 {
3615         ReadAsyncMsg *NewMsg;
3616
3617         NewMsg = (ReadAsyncMsg *)malloc(sizeof(ReadAsyncMsg));
3618         memset(NewMsg, 0, sizeof(ReadAsyncMsg));
3619
3620         if (exist == NULL) {
3621                 long len;
3622
3623                 if (expectlen == 0) {
3624                         len = 4 * SIZ;
3625                 }
3626                 else {
3627                         len = expectlen + 10;
3628                 }
3629                 NewMsg->MsgBuf = NewStrBufPlain(NULL, len);
3630         }
3631         else {
3632                 NewMsg->MsgBuf = NewStrBufPlain(exist, eLen);
3633                 free(exist);
3634         }
3635         /* Do we need to change leading ".." to "." for SMTP escaping? */
3636         if ((tlen == 1) && (*terminator == '.')) {
3637                 NewMsg->dodot = 1;
3638         }
3639
3640         NewMsg->terminator = terminator;
3641         NewMsg->tlen = tlen;
3642
3643         NewMsg->maxlen = maxlen;
3644
3645         NewMsg->crlf = crlf;
3646
3647         return NewMsg;
3648 }
3649
3650 /*
3651  * Back end function used by CtdlMakeMessage() and similar functions
3652  */
3653 eReadState CtdlReadMessageBodyAsync(AsyncIO *IO)
3654 {
3655         ReadAsyncMsg *ReadMsg;
3656         int MsgFinished = 0;
3657         eReadState Finished = eMustReadMore;
3658
3659 #ifdef BIGBAD_IODBG
3660         char fn [SIZ];
3661         FILE *fd;
3662         const char *pch = ChrPtr(IO->SendBuf.Buf);
3663         const char *pchh = IO->SendBuf.ReadWritePointer;
3664         long nbytes;
3665
3666         if (pchh == NULL)
3667                 pchh = pch;
3668
3669         nbytes = StrLength(IO->SendBuf.Buf) - (pchh - pch);
3670         snprintf(fn, SIZ, "/tmp/foolog_ev_%s.%d",
3671                  ((CitContext*)(IO->CitContext))->ServiceName,
3672                  IO->SendBuf.fd);
3673
3674         fd = fopen(fn, "a+");
3675 #endif
3676
3677         ReadMsg = IO->ReadMsg;
3678
3679         /* read in the lines of message text one by one */
3680         do {
3681                 Finished = StrBufChunkSipLine(IO->IOBuf, &IO->RecvBuf);
3682
3683                 switch (Finished) {
3684                 case eMustReadMore: /// read new from socket...
3685 #ifdef BIGBAD_IODBG
3686                         if (IO->RecvBuf.ReadWritePointer != NULL) {
3687                                 nbytes = StrLength(IO->RecvBuf.Buf) - (IO->RecvBuf.ReadWritePointer - ChrPtr(IO->RecvBuf.Buf));
3688                                 fprintf(fd, "Read; Line unfinished: %ld Bytes still in buffer [", nbytes);
3689
3690                                 fwrite(IO->RecvBuf.ReadWritePointer, nbytes, 1, fd);
3691
3692                                 fprintf(fd, "]\n");
3693                         } else {
3694                                 fprintf(fd, "BufferEmpty! \n");
3695                         }
3696                         fclose(fd);
3697 #endif
3698                         return Finished;
3699                     break;
3700                 case eBufferNotEmpty: /* shouldn't happen... */
3701                 case eReadSuccess: /// done for now...
3702                     break;
3703                 case eReadFail: /// WHUT?
3704                     ///todo: shut down!
3705                         break;
3706                 }
3707
3708
3709                 if ((StrLength(IO->IOBuf) == ReadMsg->tlen) &&
3710                     (!strcmp(ChrPtr(IO->IOBuf), ReadMsg->terminator))) {
3711                         MsgFinished = 1;
3712 #ifdef BIGBAD_IODBG
3713                         fprintf(fd, "found Terminator; Message Size: %d\n", StrLength(ReadMsg->MsgBuf));
3714 #endif
3715                 }
3716                 else if (!ReadMsg->flushing) {
3717
3718 #ifdef BIGBAD_IODBG
3719                         fprintf(fd, "Read Line: [%d][%s]\n", StrLength(IO->IOBuf), ChrPtr(IO->IOBuf));
3720 #endif
3721
3722                         /* Unescape SMTP-style input of two dots at the beginning of the line */
3723                         if ((ReadMsg->dodot) &&
3724                             (StrLength(IO->IOBuf) == 2) &&  /* TODO: do we just unescape lines with two dots or any line? */
3725                             (!strcmp(ChrPtr(IO->IOBuf), "..")))
3726                         {
3727 #ifdef BIGBAD_IODBG
3728                                 fprintf(fd, "UnEscaped!\n");
3729 #endif
3730                                 StrBufCutLeft(IO->IOBuf, 1);
3731                         }
3732
3733                         if (ReadMsg->crlf) {
3734                                 StrBufAppendBufPlain(IO->IOBuf, HKEY("\r\n"), 0);
3735                         }
3736                         else {
3737                                 StrBufAppendBufPlain(IO->IOBuf, HKEY("\n"), 0);
3738                         }
3739
3740                         StrBufAppendBuf(ReadMsg->MsgBuf, IO->IOBuf, 0);
3741                 }
3742
3743                 /* if we've hit the max msg length, flush the rest */
3744                 if (StrLength(ReadMsg->MsgBuf) >= ReadMsg->maxlen) ReadMsg->flushing = 1;
3745
3746         } while (!MsgFinished);
3747
3748 #ifdef BIGBAD_IODBG
3749         fprintf(fd, "Done with reading; %s.\n, ",
3750                 (MsgFinished)?"Message Finished": "FAILED");
3751         fclose(fd);
3752 #endif
3753         if (MsgFinished)
3754                 return eReadSuccess;
3755         else
3756                 return eAbort;
3757 }
3758
3759
3760 /*
3761  * Back end function used by CtdlMakeMessage() and similar functions
3762  */
3763 char *CtdlReadMessageBody(char *terminator,     /* token signalling EOT */
3764                           long tlen,
3765                           size_t maxlen,                /* maximum message length */
3766                           char *exist,          /* if non-null, append to it;
3767                                                    exist is ALWAYS freed  */
3768                           int crlf,             /* CRLF newlines instead of LF */
3769                           int *sock             /* socket handle or 0 for this session's client socket */
3770         )
3771 {
3772         StrBuf *Message;
3773
3774         Message = CtdlReadMessageBodyBuf(terminator,
3775                                          tlen,
3776                                          maxlen,
3777                                          exist,
3778                                          crlf,
3779                                          sock);
3780         if (Message == NULL)
3781                 return NULL;
3782         else
3783                 return SmashStrBuf(&Message);
3784 }
3785
3786
3787 /*
3788  * Build a binary message to be saved on disk.
3789  * (NOTE: if you supply 'preformatted_text', the buffer you give it
3790  * will become part of the message.  This means you are no longer
3791  * responsible for managing that memory -- it will be freed along with
3792  * the rest of the fields when CtdlFreeMessage() is called.)
3793  */
3794
3795 struct CtdlMessage *CtdlMakeMessage(
3796         struct ctdluser *author,        /* author's user structure */
3797         char *recipient,                /* NULL if it's not mail */
3798         char *recp_cc,                  /* NULL if it's not mail */
3799         char *room,                     /* room where it's going */
3800         int type,                       /* see MES_ types in header file */
3801         int format_type,                /* variformat, plain text, MIME... */
3802         char *fake_name,                /* who we're masquerading as */
3803         char *my_email,                 /* which of my email addresses to use (empty is ok) */
3804         char *subject,                  /* Subject (optional) */
3805         char *supplied_euid,            /* ...or NULL if this is irrelevant */
3806         char *preformatted_text,        /* ...or NULL to read text from client */
3807         char *references                /* Thread references */
3808         ) {
3809         char dest_node[256];
3810         char buf[1024];
3811         struct CtdlMessage *msg;
3812         StrBuf *FakeAuthor;
3813         StrBuf *FakeEncAuthor = NULL;
3814
3815         msg = malloc(sizeof(struct CtdlMessage));
3816         memset(msg, 0, sizeof(struct CtdlMessage));
3817         msg->cm_magic = CTDLMESSAGE_MAGIC;
3818         msg->cm_anon_type = type;
3819         msg->cm_format_type = format_type;
3820
3821         /* Don't confuse the poor folks if it's not routed mail. */
3822         strcpy(dest_node, "");
3823
3824         if (recipient != NULL) striplt(recipient);
3825         if (recp_cc != NULL) striplt(recp_cc);
3826
3827         /* Path or Return-Path */
3828         if (my_email == NULL) my_email = "";
3829
3830         if (!IsEmptyStr(my_email)) {
3831                 msg->cm_fields['P'] = strdup(my_email);
3832         }
3833         else {
3834                 snprintf(buf, sizeof buf, "%s", author->fullname);
3835                 msg->cm_fields['P'] = strdup(buf);
3836         }
3837         convert_spaces_to_underscores(msg->cm_fields['P']);
3838
3839         snprintf(buf, sizeof buf, "%ld", (long)time(NULL));     /* timestamp */
3840         msg->cm_fields['T'] = strdup(buf);
3841
3842         if ((fake_name != NULL) && (fake_name[0])) {            /* author */
3843                 FakeAuthor = NewStrBufPlain (fake_name, -1);
3844         }
3845         else {
3846                 FakeAuthor = NewStrBufPlain (author->fullname, -1);
3847         }
3848         StrBufRFC2047encode(&FakeEncAuthor, FakeAuthor);
3849         msg->cm_fields['A'] = SmashStrBuf(&FakeEncAuthor);
3850         FreeStrBuf(&FakeAuthor);
3851
3852         if (CC->room.QRflags & QR_MAILBOX) {            /* room */
3853                 msg->cm_fields['O'] = strdup(&CC->room.QRname[11]);
3854         }
3855         else {
3856                 msg->cm_fields['O'] = strdup(CC->room.QRname);
3857         }
3858
3859         msg->cm_fields['N'] = strdup(NODENAME);         /* nodename */
3860         msg->cm_fields['H'] = strdup(HUMANNODE);                /* hnodename */
3861
3862         if ((recipient != NULL) && (recipient[0] != 0)) {
3863                 msg->cm_fields['R'] = strdup(recipient);
3864         }
3865         if ((recp_cc != NULL) && (recp_cc[0] != 0)) {
3866                 msg->cm_fields['Y'] = strdup(recp_cc);
3867         }
3868         if (dest_node[0] != 0) {
3869                 msg->cm_fields['D'] = strdup(dest_node);
3870         }
3871
3872         if (!IsEmptyStr(my_email)) {
3873                 msg->cm_fields['F'] = strdup(my_email);
3874         }
3875         else if ( (author == &CC->user) && (!IsEmptyStr(CC->cs_inet_email)) ) {
3876                 msg->cm_fields['F'] = strdup(CC->cs_inet_email);
3877         }
3878
3879         if (subject != NULL) {
3880                 long length;
3881                 striplt(subject);
3882                 length = strlen(subject);
3883                 if (length > 0) {
3884                         long i;
3885                         long IsAscii;
3886                         IsAscii = -1;
3887                         i = 0;
3888                         while ((subject[i] != '\0') &&
3889                                (IsAscii = isascii(subject[i]) != 0 ))
3890                                 i++;
3891                         if (IsAscii != 0)
3892                                 msg->cm_fields['U'] = strdup(subject);
3893                         else /* ok, we've got utf8 in the string. */
3894                         {
3895                                 msg->cm_fields['U'] = rfc2047encode(subject, length);
3896                         }
3897
3898                 }
3899         }
3900
3901         if (supplied_euid != NULL) {
3902                 msg->cm_fields['E'] = strdup(supplied_euid);
3903         }
3904
3905         if ((references != NULL) && (!IsEmptyStr(references))) {
3906                 if (msg->cm_fields['W'] != NULL)
3907                         free(msg->cm_fields['W']);
3908                 msg->cm_fields['W'] = strdup(references);
3909         }
3910
3911         if (preformatted_text != NULL) {
3912                 msg->cm_fields['M'] = preformatted_text;
3913         }
3914         else {
3915                 msg->cm_fields['M'] = CtdlReadMessageBody(HKEY("000"), config.c_maxmsglen, NULL, 0, 0);
3916         }
3917
3918         return(msg);
3919 }
3920
3921 extern int netconfig_check_roomaccess(
3922         char *errmsgbuf,
3923         size_t n,
3924         const char* RemoteIdentifier); /* TODO: find a smarter way */
3925
3926 /*
3927  * Check to see whether we have permission to post a message in the current
3928  * room.  Returns a *CITADEL ERROR CODE* and puts a message in errmsgbuf, or
3929  * returns 0 on success.
3930  */
3931 int CtdlDoIHavePermissionToPostInThisRoom(
3932         char *errmsgbuf,
3933         size_t n,
3934         const char* RemoteIdentifier,
3935         int PostPublic,
3936         int is_reply
3937         ) {
3938         int ra;
3939
3940         if (!(CC->logged_in) &&
3941             (PostPublic == POST_LOGGED_IN)) {
3942                 snprintf(errmsgbuf, n, "Not logged in.");
3943                 return (ERROR + NOT_LOGGED_IN);
3944         }
3945         else if (PostPublic == CHECK_EXISTANCE) {
3946                 return (0); // We're Evaling whether a recipient exists
3947         }
3948         else if (!(CC->logged_in)) {
3949
3950                 if ((CC->room.QRflags & QR_READONLY)) {
3951                         snprintf(errmsgbuf, n, "Not logged in.");
3952                         return (ERROR + NOT_LOGGED_IN);
3953                 }
3954                 if (CC->room.QRflags2 & QR2_MODERATED) {
3955                         snprintf(errmsgbuf, n, "Not logged in Moderation feature not yet implemented!");
3956                         return (ERROR + NOT_LOGGED_IN);
3957                 }
3958                 if ((PostPublic!=POST_LMTP) &&(CC->room.QRflags2 & QR2_SMTP_PUBLIC) == 0) {
3959
3960                         return netconfig_check_roomaccess(errmsgbuf, n, RemoteIdentifier);
3961                 }
3962                 return (0);
3963
3964         }
3965
3966         if ((CC->user.axlevel < AxProbU)
3967             && ((CC->room.QRflags & QR_MAILBOX) == 0)) {
3968                 snprintf(errmsgbuf, n, "Need to be validated to enter (except in %s> to sysop)", MAILROOM);
3969                 return (ERROR + HIGHER_ACCESS_REQUIRED);
3970         }
3971
3972         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
3973
3974         if (ra & UA_POSTALLOWED) {
3975                 strcpy(errmsgbuf, "OK to post or reply here");
3976                 return(0);
3977         }
3978
3979         if ( (ra & UA_REPLYALLOWED) && (is_reply) ) {
3980                 /*
3981                  * To be thorough, we ought to check to see if the message they are
3982                  * replying to is actually a valid one in this room, but unless this
3983                  * actually becomes a problem we'll go with high performance instead.
3984                  */
3985                 strcpy(errmsgbuf, "OK to reply here");
3986                 return(0);
3987         }
3988
3989         if ( (ra & UA_REPLYALLOWED) && (!is_reply) ) {
3990                 /* Clarify what happened with a better error message */
3991                 snprintf(errmsgbuf, n, "You may only reply to existing messages here.");
3992                 return (ERROR + HIGHER_ACCESS_REQUIRED);
3993         }
3994
3995         snprintf(errmsgbuf, n, "Higher access is required to post in this room.");
3996         return (ERROR + HIGHER_ACCESS_REQUIRED);
3997
3998 }
3999
4000
4001 /*
4002  * Check to see if the specified user has Internet mail permission
4003  * (returns nonzero if permission is granted)
4004  */
4005 int CtdlCheckInternetMailPermission(struct ctdluser *who) {
4006
4007         /* Do not allow twits to send Internet mail */
4008         if (who->axlevel <= AxProbU) return(0);
4009
4010         /* Globally enabled? */
4011         if (config.c_restrict == 0) return(1);
4012
4013         /* User flagged ok? */
4014         if (who->flags & US_INTERNET) return(2);
4015
4016         /* Aide level access? */
4017         if (who->axlevel >= AxAideU) return(3);
4018
4019         /* No mail for you! */
4020         return(0);
4021 }
4022
4023
4024 /*
4025  * Validate recipients, count delivery types and errors, and handle aliasing
4026  * FIXME check for dupes!!!!!
4027  *
4028  * Returns 0 if all addresses are ok, ret->num_error = -1 if no addresses
4029  * were specified, or the number of addresses found invalid.
4030  *
4031  * Caller needs to free the result using free_recipients()
4032  */
4033 struct recptypes *validate_recipients(const char *supplied_recipients,
4034                                       const char *RemoteIdentifier,
4035                                       int Flags) {
4036         struct CitContext *CCC = CC;
4037         struct recptypes *ret;
4038         char *recipients = NULL;
4039         char *org_recp;
4040         char this_recp[256];
4041         char this_recp_cooked[256];
4042         char append[SIZ];
4043         long len;
4044         int num_recps = 0;
4045         int i, j;
4046         int mailtype;
4047         int invalid;
4048         struct ctdluser tempUS;
4049         struct ctdlroom tempQR;
4050         struct ctdlroom tempQR2;
4051         int err = 0;
4052         char errmsg[SIZ];
4053         int in_quotes = 0;
4054
4055         /* Initialize */
4056         ret = (struct recptypes *) malloc(sizeof(struct recptypes));
4057         if (ret == NULL) return(NULL);
4058
4059         /* Set all strings to null and numeric values to zero */
4060         memset(ret, 0, sizeof(struct recptypes));
4061
4062         if (supplied_recipients == NULL) {
4063                 recipients = strdup("");
4064         }
4065         else {
4066                 recipients = strdup(supplied_recipients);
4067         }
4068
4069         /* Allocate some memory.  Yes, this allocates 500% more memory than we will
4070          * actually need, but it's healthier for the heap than doing lots of tiny
4071          * realloc() calls instead.
4072          */
4073         len = strlen(recipients) + 1024;
4074         ret->errormsg = malloc(len);
4075         ret->recp_local = malloc(len);
4076         ret->recp_internet = malloc(len);
4077         ret->recp_ignet = malloc(len);
4078         ret->recp_room = malloc(len);
4079         ret->display_recp = malloc(len);
4080         ret->recp_orgroom = malloc(len);
4081         org_recp = malloc(len);
4082
4083         ret->errormsg[0] = 0;
4084         ret->recp_local[0] = 0;
4085         ret->recp_internet[0] = 0;
4086         ret->recp_ignet[0] = 0;
4087         ret->recp_room[0] = 0;
4088         ret->recp_orgroom[0] = 0;
4089         ret->display_recp[0] = 0;
4090
4091         ret->recptypes_magic = RECPTYPES_MAGIC;
4092
4093         /* Change all valid separator characters to commas */
4094         for (i=0; !IsEmptyStr(&recipients[i]); ++i) {
4095                 if ((recipients[i] == ';') || (recipients[i] == '|')) {
4096                         recipients[i] = ',';
4097                 }
4098         }
4099
4100         /* Now start extracting recipients... */
4101
4102         while (!IsEmptyStr(recipients)) {
4103                 for (i=0; i<=strlen(recipients); ++i) {
4104                         if (recipients[i] == '\"') in_quotes = 1 - in_quotes;
4105                         if ( ( (recipients[i] == ',') && (!in_quotes) ) || (recipients[i] == 0) ) {
4106                                 safestrncpy(this_recp, recipients, i+1);
4107                                 this_recp[i] = 0;
4108                                 if (recipients[i] == ',') {
4109                                         strcpy(recipients, &recipients[i+1]);
4110                                 }
4111                                 else {
4112                                         strcpy(recipients, "");
4113                                 }
4114                                 break;
4115                         }
4116                 }
4117
4118                 striplt(this_recp);
4119                 if (IsEmptyStr(this_recp))
4120                         break;
4121                 MSG_syslog(LOG_DEBUG, "Evaluating recipient #%d: %s\n", num_recps, this_recp);
4122                 ++num_recps;
4123
4124                 strcpy(org_recp, this_recp);
4125                 alias(this_recp);
4126                 alias(this_recp);
4127                 mailtype = alias(this_recp);
4128
4129                 for (j = 0; !IsEmptyStr(&this_recp[j]); ++j) {
4130                         if (this_recp[j]=='_') {
4131                                 this_recp_cooked[j] = ' ';
4132                         }
4133                         else {
4134                                 this_recp_cooked[j] = this_recp[j];
4135                         }
4136                 }
4137                 this_recp_cooked[j] = '\0';
4138                 invalid = 0;
4139                 errmsg[0] = 0;
4140                 switch(mailtype) {
4141                 case MES_LOCAL:
4142                         if (!strcasecmp(this_recp, "sysop")) {
4143                                 ++ret->num_room;
4144                                 strcpy(this_recp, config.c_aideroom);
4145                                 if (!IsEmptyStr(ret->recp_room)) {
4146                                         strcat(ret->recp_room, "|");
4147                                 }
4148                                 strcat(ret->recp_room, this_recp);
4149                         }
4150                         else if ( (!strncasecmp(this_recp, "room_", 5))
4151                                   && (!CtdlGetRoom(&tempQR, &this_recp_cooked[5])) ) {
4152
4153                                 /* Save room so we can restore it later */
4154                                 tempQR2 = CCC->room;
4155                                 CCC->room = tempQR;
4156
4157                                 /* Check permissions to send mail to this room */
4158                                 err = CtdlDoIHavePermissionToPostInThisRoom(
4159                                         errmsg,
4160                                         sizeof errmsg,
4161                                         RemoteIdentifier,
4162                                         Flags,
4163                                         0                       /* 0 = not a reply */
4164                                         );
4165                                 if (err)
4166                                 {
4167                                         ++ret->num_error;
4168                                         invalid = 1;
4169                                 }
4170                                 else {
4171                                         ++ret->num_room;
4172                                         if (!IsEmptyStr(ret->recp_room)) {
4173                                                 strcat(ret->recp_room, "|");
4174                                         }
4175                                         strcat(ret->recp_room, &this_recp_cooked[5]);
4176
4177                                         if (!IsEmptyStr(ret->recp_orgroom)) {
4178                                                 strcat(ret->recp_orgroom, "|");
4179                                         }
4180                                         strcat(ret->recp_orgroom, org_recp);
4181
4182                                 }
4183
4184                                 /* Restore room in case something needs it */
4185                                 CCC->room = tempQR2;
4186
4187                         }
4188                         else if (CtdlGetUser(&tempUS, this_recp) == 0) {
4189                                 ++ret->num_local;
4190                                 strcpy(this_recp, tempUS.fullname);
4191                                 if (!IsEmptyStr(ret->recp_local)) {
4192                                         strcat(ret->recp_local, "|");
4193                                 }
4194                                 strcat(ret->recp_local, this_recp);
4195                         }
4196                         else if (CtdlGetUser(&tempUS, this_recp_cooked) == 0) {
4197                                 ++ret->num_local;
4198                                 strcpy(this_recp, tempUS.fullname);
4199                                 if (!IsEmptyStr(ret->recp_local)) {
4200                                         strcat(ret->recp_local, "|");
4201                                 }
4202                                 strcat(ret->recp_local, this_recp);
4203                         }
4204                         else {
4205                                 ++ret->num_error;
4206                                 invalid = 1;
4207                         }
4208                         break;
4209                 case MES_INTERNET:
4210                         /* Yes, you're reading this correctly: if the target
4211                          * domain points back to the local system or an attached
4212                          * Citadel directory, the address is invalid.  That's
4213                          * because if the address were valid, we would have
4214                          * already translated it to a local address by now.
4215                          */
4216                         if (IsDirectory(this_recp, 0)) {
4217                                 ++ret->num_error;
4218                                 invalid = 1;
4219                         }
4220                         else {
4221                                 ++ret->num_internet;
4222                                 if (!IsEmptyStr(ret->recp_internet)) {
4223                                         strcat(ret->recp_internet, "|");
4224                                 }
4225                                 strcat(ret->recp_internet, this_recp);
4226                         }
4227                         break;
4228                 case MES_IGNET:
4229                         ++ret->num_ignet;
4230                         if (!IsEmptyStr(ret->recp_ignet)) {
4231                                 strcat(ret->recp_ignet, "|");
4232                         }
4233                         strcat(ret->recp_ignet, this_recp);
4234                         break;
4235                 case MES_ERROR:
4236                         ++ret->num_error;
4237                         invalid = 1;
4238                         break;
4239                 }
4240                 if (invalid) {
4241                         if (IsEmptyStr(errmsg)) {
4242                                 snprintf(append, sizeof append, "Invalid recipient: %s", this_recp);
4243                         }
4244                         else {
4245                                 snprintf(append, sizeof append, "%s", errmsg);
4246                         }
4247                         if ( (strlen(ret->errormsg) + strlen(append) + 3) < SIZ) {
4248                                 if (!IsEmptyStr(ret->errormsg)) {
4249                                         strcat(ret->errormsg, "; ");
4250                                 }
4251                                 strcat(ret->errormsg, append);
4252                         }
4253                 }
4254                 else {
4255                         if (IsEmptyStr(ret->display_recp)) {
4256                                 strcpy(append, this_recp);
4257                         }
4258                         else {
4259                                 snprintf(append, sizeof append, ", %s", this_recp);
4260                         }
4261                         if ( (strlen(ret->display_recp)+strlen(append)) < SIZ) {
4262                                 strcat(ret->display_recp, append);
4263                         }
4264                 }
4265         }
4266         free(org_recp);
4267
4268         if ((ret->num_local + ret->num_internet + ret->num_ignet +
4269              ret->num_room + ret->num_error) == 0) {
4270                 ret->num_error = (-1);
4271                 strcpy(ret->errormsg, "No recipients specified.");
4272         }
4273
4274         MSGM_syslog(LOG_DEBUG, "validate_recipients()\n");
4275         MSG_syslog(LOG_DEBUG, " local: %d <%s>\n", ret->num_local, ret->recp_local);
4276         MSG_syslog(LOG_DEBUG, "  room: %d <%s>\n", ret->num_room, ret->recp_room);
4277         MSG_syslog(LOG_DEBUG, "  inet: %d <%s>\n", ret->num_internet, ret->recp_internet);
4278         MSG_syslog(LOG_DEBUG, " ignet: %d <%s>\n", ret->num_ignet, ret->recp_ignet);
4279         MSG_syslog(LOG_DEBUG, " error: %d <%s>\n", ret->num_error, ret->errormsg);
4280
4281         free(recipients);
4282         return(ret);
4283 }
4284
4285
4286 /*
4287  * Destructor for struct recptypes
4288  */
4289 void free_recipients(struct recptypes *valid) {
4290
4291         if (valid == NULL) {
4292                 return;
4293         }
4294
4295         if (valid->recptypes_magic != RECPTYPES_MAGIC) {
4296                 struct CitContext *CCC = CC;
4297                 MSGM_syslog(LOG_EMERG, "Attempt to call free_recipients() on some other data type!\n");
4298                 abort();
4299         }
4300
4301         if (valid->errormsg != NULL)            free(valid->errormsg);
4302         if (valid->recp_local != NULL)          free(valid->recp_local);
4303         if (valid->recp_internet != NULL)       free(valid->recp_internet);
4304         if (valid->recp_ignet != NULL)          free(valid->recp_ignet);
4305         if (valid->recp_room != NULL)           free(valid->recp_room);
4306         if (valid->recp_orgroom != NULL)        free(valid->recp_orgroom);
4307         if (valid->display_recp != NULL)        free(valid->display_recp);
4308         if (valid->bounce_to != NULL)           free(valid->bounce_to);
4309         if (valid->envelope_from != NULL)       free(valid->envelope_from);
4310         if (valid->sending_room != NULL)        free(valid->sending_room);
4311         free(valid);
4312 }
4313
4314
4315
4316 /*
4317  * message entry  -  mode 0 (normal)
4318  */
4319 void cmd_ent0(char *entargs)
4320 {
4321         struct CitContext *CCC = CC;
4322         int post = 0;
4323         char recp[SIZ];
4324         char cc[SIZ];
4325         char bcc[SIZ];
4326         char supplied_euid[128];
4327         int anon_flag = 0;
4328         int format_type = 0;
4329         char newusername[256];
4330         char newuseremail[256];
4331         struct CtdlMessage *msg;
4332         int anonymous = 0;
4333         char errmsg[SIZ];
4334         int err = 0;
4335         struct recptypes *valid = NULL;
4336         struct recptypes *valid_to = NULL;
4337         struct recptypes *valid_cc = NULL;
4338         struct recptypes *valid_bcc = NULL;
4339         char subject[SIZ];
4340         int subject_required = 0;
4341         int do_confirm = 0;
4342         long msgnum;
4343         int i, j;
4344         char buf[256];
4345         int newuseremail_ok = 0;
4346         char references[SIZ];
4347         char *ptr;
4348
4349         unbuffer_output();
4350
4351         post = extract_int(entargs, 0);
4352         extract_token(recp, entargs, 1, '|', sizeof recp);
4353         anon_flag = extract_int(entargs, 2);
4354         format_type = extract_int(entargs, 3);
4355         extract_token(subject, entargs, 4, '|', sizeof subject);
4356         extract_token(newusername, entargs, 5, '|', sizeof newusername);
4357         do_confirm = extract_int(entargs, 6);
4358         extract_token(cc, entargs, 7, '|', sizeof cc);
4359         extract_token(bcc, entargs, 8, '|', sizeof bcc);
4360         switch(CC->room.QRdefaultview) {
4361         case VIEW_NOTES:
4362         case VIEW_WIKI:
4363                 extract_token(supplied_euid, entargs, 9, '|', sizeof supplied_euid);
4364                 break;
4365         default:
4366                 supplied_euid[0] = 0;
4367                 break;
4368         }
4369         extract_token(newuseremail, entargs, 10, '|', sizeof newuseremail);
4370         extract_token(references, entargs, 11, '|', sizeof references);
4371         for (ptr=references; *ptr != 0; ++ptr) {
4372                 if (*ptr == '!') *ptr = '|';
4373         }
4374
4375         /* first check to make sure the request is valid. */
4376
4377         err = CtdlDoIHavePermissionToPostInThisRoom(
4378                 errmsg,
4379                 sizeof errmsg,
4380                 NULL,
4381                 POST_LOGGED_IN,
4382                 (!IsEmptyStr(references))               /* is this a reply?  or a top-level post? */
4383                 );
4384         if (err)
4385         {
4386                 cprintf("%d %s\n", err, errmsg);
4387                 return;
4388         }
4389
4390         /* Check some other permission type things. */
4391
4392         if (IsEmptyStr(newusername)) {
4393                 strcpy(newusername, CCC->user.fullname);
4394         }
4395         if (  (CCC->user.axlevel < AxAideU)
4396               && (strcasecmp(newusername, CCC->user.fullname))
4397               && (strcasecmp(newusername, CCC->cs_inet_fn))
4398                 ) {
4399                 cprintf("%d You don't have permission to author messages as '%s'.\n",
4400                         ERROR + HIGHER_ACCESS_REQUIRED,
4401                         newusername
4402                         );
4403                 return;
4404         }
4405
4406
4407         if (IsEmptyStr(newuseremail)) {
4408                 newuseremail_ok = 1;
4409         }
4410
4411         if (!IsEmptyStr(newuseremail)) {
4412                 if (!strcasecmp(newuseremail, CCC->cs_inet_email)) {
4413                         newuseremail_ok = 1;
4414                 }
4415                 else if (!IsEmptyStr(CCC->cs_inet_other_emails)) {
4416                         j = num_tokens(CCC->cs_inet_other_emails, '|');
4417                         for (i=0; i<j; ++i) {
4418                                 extract_token(buf, CCC->cs_inet_other_emails, i, '|', sizeof buf);
4419                                 if (!strcasecmp(newuseremail, buf)) {
4420                                         newuseremail_ok = 1;
4421                                 }
4422                         }
4423                 }
4424         }
4425
4426         if (!newuseremail_ok) {
4427                 cprintf("%d You don't have permission to author messages as '%s'.\n",
4428                         ERROR + HIGHER_ACCESS_REQUIRED,
4429                         newuseremail
4430                         );
4431                 return;
4432         }
4433
4434         CCC->cs_flags |= CS_POSTING;
4435
4436         /* In mailbox rooms we have to behave a little differently --
4437          * make sure the user has specified at least one recipient.  Then
4438          * validate the recipient(s).  We do this for the Mail> room, as
4439          * well as any room which has the "Mailbox" view set - unless it
4440          * is the DRAFTS room which does not require recipients
4441          */
4442
4443         if ( (  ( (CCC->room.QRflags & QR_MAILBOX) && (!strcasecmp(&CCC->room.QRname[11], MAILROOM)) )
4444                 || ( (CCC->room.QRflags & QR_MAILBOX) && (CCC->curr_view == VIEW_MAILBOX) )
4445                      ) && (strcasecmp(&CCC->room.QRname[11], USERDRAFTROOM)) !=0 ) {
4446                 if (CCC->user.axlevel < AxProbU) {
4447                         strcpy(recp, "sysop");
4448                         strcpy(cc, "");
4449                         strcpy(bcc, "");
4450                 }
4451
4452                 valid_to = validate_recipients(recp, NULL, 0);
4453                 if (valid_to->num_error > 0) {
4454                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_to->errormsg);
4455                         free_recipients(valid_to);
4456                         return;
4457                 }
4458
4459                 valid_cc = validate_recipients(cc, NULL, 0);
4460                 if (valid_cc->num_error > 0) {
4461                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_cc->errormsg);
4462                         free_recipients(valid_to);
4463                         free_recipients(valid_cc);
4464                         return;
4465                 }
4466
4467                 valid_bcc = validate_recipients(bcc, NULL, 0);
4468                 if (valid_bcc->num_error > 0) {
4469                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_bcc->errormsg);
4470                         free_recipients(valid_to);
4471                         free_recipients(valid_cc);
4472                         free_recipients(valid_bcc);
4473                         return;
4474                 }
4475
4476                 /* Recipient required, but none were specified */
4477                 if ( (valid_to->num_error < 0) && (valid_cc->num_error < 0) && (valid_bcc->num_error < 0) ) {
4478                         free_recipients(valid_to);
4479                         free_recipients(valid_cc);
4480                         free_recipients(valid_bcc);
4481                         cprintf("%d At least one recipient is required.\n", ERROR + NO_SUCH_USER);
4482                         return;
4483                 }
4484
4485                 if (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0) {
4486                         if (CtdlCheckInternetMailPermission(&CCC->user)==0) {
4487                                 cprintf("%d You do not have permission "
4488                                         "to send Internet mail.\n",
4489                                         ERROR + HIGHER_ACCESS_REQUIRED);
4490                                 free_recipients(valid_to);
4491                                 free_recipients(valid_cc);
4492                                 free_recipients(valid_bcc);
4493                                 return;
4494                         }
4495                 }
4496
4497                 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)
4498                      && (CCC->user.axlevel < AxNetU) ) {
4499                         cprintf("%d Higher access required for network mail.\n",
4500                                 ERROR + HIGHER_ACCESS_REQUIRED);
4501                         free_recipients(valid_to);
4502                         free_recipients(valid_cc);
4503                         free_recipients(valid_bcc);
4504                         return;
4505                 }
4506
4507                 if ((RESTRICT_INTERNET == 1)
4508                     && (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0)
4509                     && ((CCC->user.flags & US_INTERNET) == 0)
4510                     && (!CCC->internal_pgm)) {
4511                         cprintf("%d You don't have access to Internet mail.\n",
4512                                 ERROR + HIGHER_ACCESS_REQUIRED);
4513                         free_recipients(valid_to);
4514                         free_recipients(valid_cc);
4515                         free_recipients(valid_bcc);
4516                         return;
4517                 }
4518
4519         }
4520
4521         /* Is this a room which has anonymous-only or anonymous-option? */
4522         anonymous = MES_NORMAL;
4523         if (CCC->room.QRflags & QR_ANONONLY) {
4524                 anonymous = MES_ANONONLY;
4525         }
4526         if (CCC->room.QRflags & QR_ANONOPT) {
4527                 if (anon_flag == 1) {   /* only if the user requested it */
4528                         anonymous = MES_ANONOPT;
4529                 }
4530         }
4531
4532         if ((CCC->room.QRflags & QR_MAILBOX) == 0) {
4533                 recp[0] = 0;
4534         }
4535
4536         /* Recommend to the client that the use of a message subject is
4537          * strongly recommended in this room, if either the SUBJECTREQ flag
4538          * is set, or if there is one or more Internet email recipients.
4539          */
4540         if (CCC->room.QRflags2 & QR2_SUBJECTREQ) subject_required = 1;
4541         if ((valid_to)  && (valid_to->num_internet > 0))        subject_required = 1;
4542         if ((valid_cc)  && (valid_cc->num_internet > 0))        subject_required = 1;
4543         if ((valid_bcc) && (valid_bcc->num_internet > 0))       subject_required = 1;
4544
4545         /* If we're only checking the validity of the request, return
4546          * success without creating the message.
4547          */
4548         if (post == 0) {
4549                 cprintf("%d %s|%d\n", CIT_OK,
4550                         ((valid_to != NULL) ? valid_to->display_recp : ""),
4551                         subject_required);
4552                 free_recipients(valid_to);
4553                 free_recipients(valid_cc);
4554                 free_recipients(valid_bcc);
4555                 return;
4556         }
4557
4558         /* We don't need these anymore because we'll do it differently below */
4559         free_recipients(valid_to);
4560         free_recipients(valid_cc);
4561         free_recipients(valid_bcc);
4562
4563         /* Read in the message from the client. */
4564         if (do_confirm) {
4565                 cprintf("%d send message\n", START_CHAT_MODE);
4566         } else {
4567                 cprintf("%d send message\n", SEND_LISTING);
4568         }
4569
4570         msg = CtdlMakeMessage(&CCC->user, recp, cc,
4571                               CCC->room.QRname, anonymous, format_type,
4572                               newusername, newuseremail, subject,
4573                               ((!IsEmptyStr(supplied_euid)) ? supplied_euid : NULL),
4574                               NULL, references);
4575
4576         /* Put together one big recipients struct containing to/cc/bcc all in
4577          * one.  This is for the envelope.
4578          */
4579         char *all_recps = malloc(SIZ * 3);
4580         strcpy(all_recps, recp);
4581         if (!IsEmptyStr(cc)) {
4582                 if (!IsEmptyStr(all_recps)) {
4583                         strcat(all_recps, ",");
4584                 }
4585                 strcat(all_recps, cc);
4586         }
4587         if (!IsEmptyStr(bcc)) {
4588                 if (!IsEmptyStr(all_recps)) {
4589                         strcat(all_recps, ",");
4590                 }
4591                 strcat(all_recps, bcc);
4592         }
4593         if (!IsEmptyStr(all_recps)) {
4594                 valid = validate_recipients(all_recps, NULL, 0);
4595         }
4596         else {
4597                 valid = NULL;
4598         }
4599         free(all_recps);
4600
4601         if ((valid != NULL) && (valid->num_room == 1))
4602         {
4603                 /* posting into an ML room? set the envelope from
4604                  * to the actual mail address so others get a valid
4605                  * reply-to-header.
4606                  */
4607                 msg->cm_fields['V'] = strdup(valid->recp_orgroom);
4608         }
4609
4610         if (msg != NULL) {
4611                 msgnum = CtdlSubmitMsg(msg, valid, "", QP_EADDR);
4612                 if (do_confirm) {
4613                         cprintf("%ld\n", msgnum);
4614
4615                         if (StrLength(CCC->StatusMessage) > 0) {
4616                                 cprintf("%s\n", ChrPtr(CCC->StatusMessage));
4617                         }
4618                         else if (msgnum >= 0L) {
4619                                 client_write(HKEY("Message accepted.\n"));
4620                         }
4621                         else {
4622                                 client_write(HKEY("Internal error.\n"));
4623                         }
4624
4625                         if (msg->cm_fields['E'] != NULL) {
4626                                 cprintf("%s\n", msg->cm_fields['E']);
4627                         } else {
4628                                 cprintf("\n");
4629                         }
4630                         cprintf("000\n");
4631                 }
4632
4633                 CtdlFreeMessage(msg);
4634         }
4635         if (valid != NULL) {
4636                 free_recipients(valid);
4637         }
4638         return;
4639 }
4640
4641
4642
4643 /*
4644  * API function to delete messages which match a set of criteria
4645  * (returns the actual number of messages deleted)
4646  */
4647 int CtdlDeleteMessages(char *room_name,         /* which room */
4648                        long *dmsgnums,          /* array of msg numbers to be deleted */
4649                        int num_dmsgnums,        /* number of msgs to be deleted, or 0 for "any" */
4650                        char *content_type       /* or "" for any.  regular expressions expected. */
4651         )
4652 {
4653         struct CitContext *CCC = CC;
4654         struct ctdlroom qrbuf;
4655         struct cdbdata *cdbfr;
4656         long *msglist = NULL;
4657         long *dellist = NULL;
4658         int num_msgs = 0;
4659         int i, j;
4660         int num_deleted = 0;
4661         int delete_this;
4662         struct MetaData smi;
4663         regex_t re;
4664         regmatch_t pm;
4665         int need_to_free_re = 0;
4666
4667         if (content_type) if (!IsEmptyStr(content_type)) {
4668                         regcomp(&re, content_type, 0);
4669                         need_to_free_re = 1;
4670                 }
4671         MSG_syslog(LOG_DEBUG, "CtdlDeleteMessages(%s, %d msgs, %s)\n",
4672                    room_name, num_dmsgnums, content_type);
4673
4674         /* get room record, obtaining a lock... */
4675         if (CtdlGetRoomLock(&qrbuf, room_name) != 0) {
4676                 MSG_syslog(LOG_ERR, "CtdlDeleteMessages(): Room <%s> not found\n",
4677                            room_name);
4678                 if (need_to_free_re) regfree(&re);
4679                 return (0);     /* room not found */
4680         }
4681         cdbfr = cdb_fetch(CDB_MSGLISTS, &qrbuf.QRnumber, sizeof(long));
4682
4683         if (cdbfr != NULL) {
4684                 dellist = malloc(cdbfr->len);
4685                 msglist = (long *) cdbfr->ptr;
4686                 cdbfr->ptr = NULL;      /* CtdlDeleteMessages() now owns this memory */
4687                 num_msgs = cdbfr->len / sizeof(long);
4688                 cdb_free(cdbfr);
4689         }
4690         if (num_msgs > 0) {
4691                 int have_contenttype = (content_type != NULL) && !IsEmptyStr(content_type);
4692                 int have_delmsgs = (num_dmsgnums == 0) || (dmsgnums == NULL);
4693                 int have_more_del = 1;
4694
4695                 num_msgs = sort_msglist(msglist, num_msgs);
4696                 if (num_dmsgnums > 1)
4697                         num_dmsgnums = sort_msglist(dmsgnums, num_dmsgnums);
4698 /*
4699                 {
4700                         StrBuf *dbg = NewStrBuf();
4701                         for (i = 0; i < num_dmsgnums; i++)
4702                                 StrBufAppendPrintf(dbg, ", %ld", dmsgnums[i]);
4703                         MSG_syslog(LOG_DEBUG, "Deleting before: %s", ChrPtr(dbg));
4704                         FreeStrBuf(&dbg);
4705                 }
4706 */
4707                 i = 0; j = 0;
4708                 while ((i < num_msgs) && (have_more_del)) {
4709                         delete_this = 0x00;
4710
4711
4712                         /* Set/clear a bit for each criterion */
4713
4714                         /* 0 messages in the list or a null list means that we are
4715                          * interested in deleting any messages which meet the other criteria.
4716                          */
4717                         if (have_delmsgs) {
4718                                 delete_this |= 0x01;
4719                         }
4720                         else {
4721                                 while ((i < num_msgs) && (msglist[i] < dmsgnums[j])) i++;
4722                                 if (msglist[i] == dmsgnums[j]) {
4723                                         delete_this |= 0x01;
4724                                 }
4725                                 j++;
4726                                 have_more_del = (j < num_dmsgnums);
4727                         }
4728
4729                         if (have_contenttype) {
4730                                 GetMetaData(&smi, msglist[i]);
4731                                 if (regexec(&re, smi.meta_content_type, 1, &pm, 0) == 0) {
4732                                         delete_this |= 0x02;
4733                                 }
4734                         } else {
4735                                 delete_this |= 0x02;
4736                         }
4737
4738                         /* Delete message only if all bits are set */
4739                         if (delete_this == 0x03) {
4740                                 dellist[num_deleted++] = msglist[i];
4741                                 msglist[i] = 0L;
4742                         }
4743                         i++;
4744                 }
4745 /*
4746                 {
4747                         StrBuf *dbg = NewStrBuf();
4748                         for (i = 0; i < num_deleted; i++)
4749                                 StrBufAppendPrintf(dbg, ", %ld", dellist[i]);
4750                         MSG_syslog(LOG_DEBUG, "Deleting: %s", ChrPtr(dbg));
4751                         FreeStrBuf(&dbg);
4752                 }
4753 */
4754                 num_msgs = sort_msglist(msglist, num_msgs);
4755                 cdb_store(CDB_MSGLISTS, &qrbuf.QRnumber, (int)sizeof(long),
4756                           msglist, (int)(num_msgs * sizeof(long)));
4757
4758                 if (num_msgs > 0)
4759                         qrbuf.QRhighest = msglist[num_msgs - 1];
4760                 else
4761                         qrbuf.QRhighest = 0;
4762         }
4763         CtdlPutRoomLock(&qrbuf);
4764
4765         /* Go through the messages we pulled out of the index, and decrement
4766          * their reference counts by 1.  If this is the only room the message
4767          * was in, the reference count will reach zero and the message will
4768          * automatically be deleted from the database.  We do this in a
4769          * separate pass because there might be plug-in hooks getting called,
4770          * and we don't want that happening during an S_ROOMS critical
4771          * section.
4772          */
4773         if (num_deleted) {
4774                 for (i=0; i<num_deleted; ++i) {
4775                         PerformDeleteHooks(qrbuf.QRname, dellist[i]);
4776                 }
4777                 AdjRefCountList(dellist, num_deleted, -1);
4778         }
4779         /* Now free the memory we used, and go away. */
4780         if (msglist != NULL) free(msglist);
4781         if (dellist != NULL) free(dellist);
4782         MSG_syslog(LOG_DEBUG, "%d message(s) deleted.\n", num_deleted);
4783         if (need_to_free_re) regfree(&re);
4784         return (num_deleted);
4785 }
4786
4787
4788
4789 /*
4790  * Check whether the current user has permission to delete messages from
4791  * the current room (returns 1 for yes, 0 for no)
4792  */
4793 int CtdlDoIHavePermissionToDeleteMessagesFromThisRoom(void) {
4794         int ra;
4795         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
4796         if (ra & UA_DELETEALLOWED) return(1);
4797         return(0);
4798 }
4799
4800
4801
4802
4803 /*
4804  * Delete message from current room
4805  */
4806 void cmd_dele(char *args)
4807 {
4808         int num_deleted;
4809         int i;
4810         char msgset[SIZ];
4811         char msgtok[32];
4812         long *msgs;
4813         int num_msgs = 0;
4814
4815         extract_token(msgset, args, 0, '|', sizeof msgset);
4816         num_msgs = num_tokens(msgset, ',');
4817         if (num_msgs < 1) {
4818                 cprintf("%d Nothing to do.\n", CIT_OK);
4819                 return;
4820         }
4821
4822         if (CtdlDoIHavePermissionToDeleteMessagesFromThisRoom() == 0) {
4823                 cprintf("%d Higher access required.\n",
4824                         ERROR + HIGHER_ACCESS_REQUIRED);
4825                 return;
4826         }
4827
4828         /*
4829          * Build our message set to be moved/copied
4830          */
4831         msgs = malloc(num_msgs * sizeof(long));
4832         for (i=0; i<num_msgs; ++i) {
4833                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4834                 msgs[i] = atol(msgtok);
4835         }
4836
4837         num_deleted = CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4838         free(msgs);
4839
4840         if (num_deleted) {
4841                 cprintf("%d %d message%s deleted.\n", CIT_OK,
4842                         num_deleted, ((num_deleted != 1) ? "s" : ""));
4843         } else {
4844                 cprintf("%d Message not found.\n", ERROR + MESSAGE_NOT_FOUND);
4845         }
4846 }
4847
4848
4849
4850
4851 /*
4852  * move or copy a message to another room
4853  */
4854 void cmd_move(char *args)
4855 {
4856         char msgset[SIZ];
4857         char msgtok[32];
4858         long *msgs;
4859         int num_msgs = 0;
4860
4861         char targ[ROOMNAMELEN];
4862         struct ctdlroom qtemp;
4863         int err;
4864         int is_copy = 0;
4865         int ra;
4866         int permit = 0;
4867         int i;
4868
4869         extract_token(msgset, args, 0, '|', sizeof msgset);
4870         num_msgs = num_tokens(msgset, ',');
4871         if (num_msgs < 1) {
4872                 cprintf("%d Nothing to do.\n", CIT_OK);
4873                 return;
4874         }
4875
4876         extract_token(targ, args, 1, '|', sizeof targ);
4877         convert_room_name_macros(targ, sizeof targ);
4878         targ[ROOMNAMELEN - 1] = 0;
4879         is_copy = extract_int(args, 2);
4880
4881         if (CtdlGetRoom(&qtemp, targ) != 0) {
4882                 cprintf("%d '%s' does not exist.\n", ERROR + ROOM_NOT_FOUND, targ);
4883                 return;
4884         }
4885
4886         if (!strcasecmp(qtemp.QRname, CC->room.QRname)) {
4887                 cprintf("%d Source and target rooms are the same.\n", ERROR + ALREADY_EXISTS);
4888                 return;
4889         }
4890
4891         CtdlGetUser(&CC->user, CC->curr_user);
4892         CtdlRoomAccess(&qtemp, &CC->user, &ra, NULL);
4893
4894         /* Check for permission to perform this operation.
4895          * Remember: "CC->room" is source, "qtemp" is target.
4896          */
4897         permit = 0;
4898
4899         /* Aides can move/copy */
4900         if (CC->user.axlevel >= AxAideU) permit = 1;
4901
4902         /* Room aides can move/copy */
4903         if (CC->user.usernum == CC->room.QRroomaide) permit = 1;
4904
4905         /* Permit move/copy from personal rooms */
4906         if ((CC->room.QRflags & QR_MAILBOX)
4907             && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
4908
4909         /* Permit only copy from public to personal room */
4910         if ( (is_copy)
4911              && (!(CC->room.QRflags & QR_MAILBOX))
4912              && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
4913
4914         /* Permit message removal from collaborative delete rooms */
4915         if (CC->room.QRflags2 & QR2_COLLABDEL) permit = 1;
4916
4917         /* Users allowed to post into the target room may move into it too. */
4918         if ((CC->room.QRflags & QR_MAILBOX) &&
4919             (qtemp.QRflags & UA_POSTALLOWED))  permit = 1;
4920
4921         /* User must have access to target room */
4922         if (!(ra & UA_KNOWN))  permit = 0;
4923
4924         if (!permit) {
4925                 cprintf("%d Higher access required.\n",
4926                         ERROR + HIGHER_ACCESS_REQUIRED);
4927                 return;
4928         }
4929
4930         /*
4931          * Build our message set to be moved/copied
4932          */
4933         msgs = malloc(num_msgs * sizeof(long));
4934         for (i=0; i<num_msgs; ++i) {
4935                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4936                 msgs[i] = atol(msgtok);
4937         }
4938
4939         /*
4940          * Do the copy
4941          */
4942         err = CtdlSaveMsgPointersInRoom(targ, msgs, num_msgs, 1, NULL, 0);
4943         if (err != 0) {
4944                 cprintf("%d Cannot store message(s) in %s: error %d\n",
4945                         err, targ, err);
4946                 free(msgs);
4947                 return;
4948         }
4949
4950         /* Now delete the message from the source room,
4951          * if this is a 'move' rather than a 'copy' operation.
4952          */
4953         if (is_copy == 0) {
4954                 CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4955         }
4956         free(msgs);
4957
4958         cprintf("%d Message(s) %s.\n", CIT_OK, (is_copy ? "copied" : "moved") );
4959 }
4960
4961
4962
4963 /*
4964  * GetMetaData()  -  Get the supplementary record for a message
4965  */
4966 void GetMetaData(struct MetaData *smibuf, long msgnum)
4967 {
4968
4969         struct cdbdata *cdbsmi;
4970         long TheIndex;
4971
4972         memset(smibuf, 0, sizeof(struct MetaData));
4973         smibuf->meta_msgnum = msgnum;
4974         smibuf->meta_refcount = 1;      /* Default reference count is 1 */
4975
4976         /* Use the negative of the message number for its supp record index */
4977         TheIndex = (0L - msgnum);
4978
4979         cdbsmi = cdb_fetch(CDB_MSGMAIN, &TheIndex, sizeof(long));
4980         if (cdbsmi == NULL) {
4981                 return;         /* record not found; go with defaults */
4982         }
4983         memcpy(smibuf, cdbsmi->ptr,
4984                ((cdbsmi->len > sizeof(struct MetaData)) ?
4985                 sizeof(struct MetaData) : cdbsmi->len));
4986         cdb_free(cdbsmi);
4987         return;
4988 }
4989
4990
4991 /*
4992  * PutMetaData()  -  (re)write supplementary record for a message
4993  */
4994 void PutMetaData(struct MetaData *smibuf)
4995 {
4996         long TheIndex;
4997
4998         /* Use the negative of the message number for the metadata db index */
4999         TheIndex = (0L - smibuf->meta_msgnum);
5000
5001         cdb_store(CDB_MSGMAIN,
5002                   &TheIndex, (int)sizeof(long),
5003                   smibuf, (int)sizeof(struct MetaData));
5004
5005 }
5006
5007 /*
5008  * AdjRefCount  -  submit an adjustment to the reference count for a message.
5009  *                 (These are just queued -- we actually process them later.)
5010  */
5011 void AdjRefCount(long msgnum, int incr)
5012 {
5013         struct CitContext *CCC = CC;
5014         struct arcq new_arcq;
5015         int rv = 0;
5016
5017         MSG_syslog(LOG_DEBUG, "AdjRefCount() msg %ld ref count delta %+d\n", msgnum, incr);
5018
5019         begin_critical_section(S_SUPPMSGMAIN);
5020         if (arcfp == NULL) {
5021                 arcfp = fopen(file_arcq, "ab+");
5022                 chown(file_arcq, CTDLUID, (-1));
5023                 chmod(file_arcq, 0600);
5024         }
5025         end_critical_section(S_SUPPMSGMAIN);
5026
5027         /* msgnum < 0 means that we're trying to close the file */
5028         if (msgnum < 0) {
5029                 MSGM_syslog(LOG_DEBUG, "Closing the AdjRefCount queue file\n");
5030                 begin_critical_section(S_SUPPMSGMAIN);
5031                 if (arcfp != NULL) {
5032                         fclose(arcfp);
5033                         arcfp = NULL;
5034                 }
5035                 end_critical_section(S_SUPPMSGMAIN);
5036                 return;
5037         }
5038
5039         /*
5040          * If we can't open the queue, perform the operation synchronously.
5041          */
5042         if (arcfp == NULL) {
5043                 TDAP_AdjRefCount(msgnum, incr);
5044                 return;
5045         }
5046
5047         new_arcq.arcq_msgnum = msgnum;
5048         new_arcq.arcq_delta = incr;
5049         rv = fwrite(&new_arcq, sizeof(struct arcq), 1, arcfp);
5050         if (rv == -1) {
5051                 MSG_syslog(LOG_EMERG, "Couldn't write Refcount Queue File %s: %s\n",
5052                            file_arcq,
5053                            strerror(errno));
5054         }
5055         fflush(arcfp);
5056
5057         return;
5058 }
5059
5060 void AdjRefCountList(long *msgnum, long nmsg, int incr)
5061 {
5062         struct CitContext *CCC = CC;
5063         long i, the_size, offset;
5064         struct arcq *new_arcq;
5065         int rv = 0;
5066
5067         MSG_syslog(LOG_DEBUG, "AdjRefCountList() msg %ld ref count delta %+d\n", nmsg, incr);
5068
5069         begin_critical_section(S_SUPPMSGMAIN);
5070         if (arcfp == NULL) {
5071                 arcfp = fopen(file_arcq, "ab+");
5072                 chown(file_arcq, CTDLUID, (-1));
5073                 chmod(file_arcq, 0600);
5074         }
5075         end_critical_section(S_SUPPMSGMAIN);
5076
5077         /*
5078          * If we can't open the queue, perform the operation synchronously.
5079          */
5080         if (arcfp == NULL) {
5081                 for (i = 0; i < nmsg; i++)
5082                         TDAP_AdjRefCount(msgnum[i], incr);
5083                 return;
5084         }
5085
5086         the_size = sizeof(struct arcq) * nmsg;
5087         new_arcq = malloc(the_size);
5088         for (i = 0; i < nmsg; i++) {
5089                 new_arcq[i].arcq_msgnum = msgnum[i];
5090                 new_arcq[i].arcq_delta = incr;
5091         }
5092         rv = 0;
5093         offset = 0;
5094         while ((rv >= 0) && (offset < the_size))
5095         {
5096                 rv = fwrite(new_arcq + offset, 1, the_size - offset, arcfp);
5097                 if (rv == -1) {
5098                         MSG_syslog(LOG_EMERG, "Couldn't write Refcount Queue File %s: %s\n",
5099                                    file_arcq,
5100                                    strerror(errno));
5101                 }
5102                 else {
5103                         offset += rv;
5104                 }
5105         }
5106         free(new_arcq);
5107         fflush(arcfp);
5108
5109         return;
5110 }
5111
5112
5113 /*
5114  * TDAP_ProcessAdjRefCountQueue()
5115  *
5116  * Process the queue of message count adjustments that was created by calls
5117  * to AdjRefCount() ... by reading the queue and calling TDAP_AdjRefCount()
5118  * for each one.  This should be an "off hours" operation.
5119  */
5120 int TDAP_ProcessAdjRefCountQueue(void)
5121 {
5122         struct CitContext *CCC = CC;
5123         char file_arcq_temp[PATH_MAX];
5124         int r;
5125         FILE *fp;
5126         struct arcq arcq_rec;
5127         int num_records_processed = 0;
5128
5129         snprintf(file_arcq_temp, sizeof file_arcq_temp, "%s.%04x", file_arcq, rand());
5130
5131         begin_critical_section(S_SUPPMSGMAIN);
5132         if (arcfp != NULL) {
5133                 fclose(arcfp);
5134                 arcfp = NULL;
5135         }
5136
5137         r = link(file_arcq, file_arcq_temp);
5138         if (r != 0) {
5139                 MSG_syslog(LOG_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
5140                 end_critical_section(S_SUPPMSGMAIN);
5141                 return(num_records_processed);
5142         }
5143
5144         unlink(file_arcq);
5145         end_critical_section(S_SUPPMSGMAIN);
5146
5147         fp = fopen(file_arcq_temp, "rb");
5148         if (fp == NULL) {
5149                 MSG_syslog(LOG_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
5150                 return(num_records_processed);
5151         }
5152
5153         while (fread(&arcq_rec, sizeof(struct arcq), 1, fp) == 1) {
5154                 TDAP_AdjRefCount(arcq_rec.arcq_msgnum, arcq_rec.arcq_delta);
5155                 ++num_records_processed;
5156         }
5157
5158         fclose(fp);
5159         r = unlink(file_arcq_temp);
5160         if (r != 0) {
5161                 MSG_syslog(LOG_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
5162         }
5163
5164         return(num_records_processed);
5165 }
5166
5167
5168
5169 /*
5170  * TDAP_AdjRefCount  -  adjust the reference count for a message.
5171  *                      This one does it "for real" because it's called by
5172  *                      the autopurger function that processes the queue
5173  *                      created by AdjRefCount().   If a message's reference
5174  *                      count becomes zero, we also delete the message from
5175  *                      disk and de-index it.
5176  */
5177 void TDAP_AdjRefCount(long msgnum, int incr)
5178 {
5179         struct CitContext *CCC = CC;
5180
5181         struct MetaData smi;
5182         long delnum;
5183
5184         /* This is a *tight* critical section; please keep it that way, as
5185          * it may get called while nested in other critical sections.
5186          * Complicating this any further will surely cause deadlock!
5187          */
5188         begin_critical_section(S_SUPPMSGMAIN);
5189         GetMetaData(&smi, msgnum);
5190         smi.meta_refcount += incr;
5191         PutMetaData(&smi);
5192         end_critical_section(S_SUPPMSGMAIN);
5193         MSG_syslog(LOG_DEBUG, "TDAP_AdjRefCount() msg %ld ref count delta %+d, is now %d\n",
5194                    msgnum, incr, smi.meta_refcount
5195                 );
5196
5197         /* If the reference count is now zero, delete the message
5198          * (and its supplementary record as well).
5199          */
5200         if (smi.meta_refcount == 0) {
5201                 MSG_syslog(LOG_DEBUG, "Deleting message <%ld>\n", msgnum);
5202
5203                 /* Call delete hooks with NULL room to show it has gone altogether */
5204                 PerformDeleteHooks(NULL, msgnum);
5205
5206                 /* Remove from message base */
5207                 delnum = msgnum;
5208                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
5209                 cdb_delete(CDB_BIGMSGS, &delnum, (int)sizeof(long));
5210
5211                 /* Remove metadata record */
5212                 delnum = (0L - msgnum);
5213                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
5214         }
5215
5216 }
5217
5218 /*
5219  * Write a generic object to this room
5220  *
5221  * Note: this could be much more efficient.  Right now we use two temporary
5222  * files, and still pull the message into memory as with all others.
5223  */
5224 void CtdlWriteObject(char *req_room,                    /* Room to stuff it in */
5225                      char *content_type,                /* MIME type of this object */
5226                      char *raw_message,         /* Data to be written */
5227                      off_t raw_length,          /* Size of raw_message */
5228                      struct ctdluser *is_mailbox,       /* Mailbox room? */
5229                      int is_binary,                     /* Is encoding necessary? */
5230                      int is_unique,                     /* Del others of this type? */
5231                      unsigned int flags         /* Internal save flags */
5232         )
5233 {
5234         struct CitContext *CCC = CC;
5235         struct ctdlroom qrbuf;
5236         char roomname[ROOMNAMELEN];
5237         struct CtdlMessage *msg;
5238         char *encoded_message = NULL;
5239
5240         if (is_mailbox != NULL) {
5241                 CtdlMailboxName(roomname, sizeof roomname, is_mailbox, req_room);
5242         }
5243         else {
5244                 safestrncpy(roomname, req_room, sizeof(roomname));
5245         }
5246
5247         MSG_syslog(LOG_DEBUG, "Raw length is %ld\n", (long)raw_length);
5248
5249         if (is_binary) {
5250                 encoded_message = malloc((size_t) (((raw_length * 134) / 100) + 4096 ) );
5251         }
5252         else {
5253                 encoded_message = malloc((size_t)(raw_length + 4096));
5254         }
5255
5256         sprintf(encoded_message, "Content-type: %s\n", content_type);
5257
5258         if (is_binary) {
5259                 sprintf(&encoded_message[strlen(encoded_message)],
5260                         "Content-transfer-encoding: base64\n\n"
5261                         );
5262         }
5263         else {
5264                 sprintf(&encoded_message[strlen(encoded_message)],
5265                         "Content-transfer-encoding: 7bit\n\n"
5266                         );
5267         }
5268
5269         if (is_binary) {
5270                 CtdlEncodeBase64(
5271                         &encoded_message[strlen(encoded_message)],
5272                         raw_message,
5273                         (int)raw_length,
5274                         0
5275                         );
5276         }
5277         else {
5278                 memcpy(
5279                         &encoded_message[strlen(encoded_message)],
5280                         raw_message,
5281                         (int)(raw_length+1)
5282                         );
5283         }
5284
5285         MSGM_syslog(LOG_DEBUG, "Allocating\n");
5286         msg = malloc(sizeof(struct CtdlMessage));
5287         memset(msg, 0, sizeof(struct CtdlMessage));
5288         msg->cm_magic = CTDLMESSAGE_MAGIC;
5289         msg->cm_anon_type = MES_NORMAL;
5290         msg->cm_format_type = 4;
5291         msg->cm_fields['A'] = strdup(CCC->user.fullname);
5292         msg->cm_fields['O'] = strdup(req_room);
5293         msg->cm_fields['N'] = strdup(config.c_nodename);
5294         msg->cm_fields['H'] = strdup(config.c_humannode);
5295         msg->cm_flags = flags;
5296
5297         msg->cm_fields['M'] = encoded_message;
5298
5299         /* Create the requested room if we have to. */
5300         if (CtdlGetRoom(&qrbuf, roomname) != 0) {
5301                 CtdlCreateRoom(roomname,
5302                                ( (is_mailbox != NULL) ? 5 : 3 ),
5303                                "", 0, 1, 0, VIEW_BBS);
5304         }
5305         /* If the caller specified this object as unique, delete all
5306          * other objects of this type that are currently in the room.
5307          */
5308         if (is_unique) {
5309                 MSG_syslog(LOG_DEBUG, "Deleted %d other msgs of this type\n",
5310                            CtdlDeleteMessages(roomname, NULL, 0, content_type)
5311                         );
5312         }
5313         /* Now write the data */
5314         CtdlSubmitMsg(msg, NULL, roomname, 0);
5315         CtdlFreeMessage(msg);
5316 }
5317
5318
5319
5320
5321
5322
5323 void CtdlGetSysConfigBackend(long msgnum, void *userdata) {
5324         config_msgnum = msgnum;
5325 }
5326
5327
5328 char *CtdlGetSysConfig(char *sysconfname) {
5329         char hold_rm[ROOMNAMELEN];
5330         long msgnum;
5331         char *conf;
5332         struct CtdlMessage *msg;
5333         char buf[SIZ];
5334
5335         strcpy(hold_rm, CC->room.QRname);
5336         if (CtdlGetRoom(&CC->room, SYSCONFIGROOM) != 0) {
5337                 CtdlGetRoom(&CC->room, hold_rm);
5338                 return NULL;
5339         }
5340
5341
5342         /* We want the last (and probably only) config in this room */
5343         begin_critical_section(S_CONFIG);
5344         config_msgnum = (-1L);
5345         CtdlForEachMessage(MSGS_LAST, 1, NULL, sysconfname, NULL,
5346                            CtdlGetSysConfigBackend, NULL);
5347         msgnum = config_msgnum;
5348         end_critical_section(S_CONFIG);
5349
5350         if (msgnum < 0L) {
5351                 conf = NULL;
5352         }
5353         else {
5354                 msg = CtdlFetchMessage(msgnum, 1);
5355                 if (msg != NULL) {
5356                         conf = strdup(msg->cm_fields['M']);
5357                         CtdlFreeMessage(msg);
5358                 }
5359                 else {
5360                         conf = NULL;
5361                 }
5362         }
5363
5364         CtdlGetRoom(&CC->room, hold_rm);
5365
5366         if (conf != NULL) do {
5367                         extract_token(buf, conf, 0, '\n', sizeof buf);
5368                         strcpy(conf, &conf[strlen(buf)+1]);
5369                 } while ( (!IsEmptyStr(conf)) && (!IsEmptyStr(buf)) );
5370
5371         return(conf);
5372 }
5373
5374
5375 void CtdlPutSysConfig(char *sysconfname, char *sysconfdata) {
5376         CtdlWriteObject(SYSCONFIGROOM, sysconfname, sysconfdata, (strlen(sysconfdata)+1), NULL, 0, 1, 0);
5377 }
5378
5379
5380 /*
5381  * Determine whether a given Internet address belongs to the current user
5382  */
5383 int CtdlIsMe(char *addr, int addr_buf_len)
5384 {
5385         struct recptypes *recp;
5386         int i;
5387
5388         recp = validate_recipients(addr, NULL, 0);
5389         if (recp == NULL) return(0);
5390
5391         if (recp->num_local == 0) {
5392                 free_recipients(recp);
5393                 return(0);
5394         }
5395
5396         for (i=0; i<recp->num_local; ++i) {
5397                 extract_token(addr, recp->recp_local, i, '|', addr_buf_len);
5398                 if (!strcasecmp(addr, CC->user.fullname)) {
5399                         free_recipients(recp);
5400                         return(1);
5401                 }
5402         }
5403
5404         free_recipients(recp);
5405         return(0);
5406 }
5407
5408
5409 /*
5410  * Citadel protocol command to do the same
5411  */
5412 void cmd_isme(char *argbuf) {
5413         char addr[256];
5414
5415         if (CtdlAccessCheck(ac_logged_in)) return;
5416         extract_token(addr, argbuf, 0, '|', sizeof addr);
5417
5418         if (CtdlIsMe(addr, sizeof addr)) {
5419                 cprintf("%d %s\n", CIT_OK, addr);
5420         }
5421         else {
5422                 cprintf("%d Not you.\n", ERROR + ILLEGAL_VALUE);
5423         }
5424
5425 }
5426
5427
5428 /*****************************************************************************/
5429 /*                      MODULE INITIALIZATION STUFF                          */
5430 /*****************************************************************************/
5431 void SetMessageDebugEnabled(const int n)
5432 {
5433         MessageDebugEnabled = n;
5434 }
5435 CTDL_MODULE_INIT(msgbase)
5436 {
5437         if (!threading) {
5438                 CtdlRegisterDebugFlagHook(HKEY("messages"), SetMessageDebugEnabled, &MessageDebugEnabled);
5439
5440                 CtdlRegisterProtoHook(cmd_msgs, "MSGS", "Output a list of messages in the current room");
5441                 CtdlRegisterProtoHook(cmd_msg0, "MSG0", "Output a message in plain text format");
5442                 CtdlRegisterProtoHook(cmd_msg2, "MSG2", "Output a message in RFC822 format");
5443                 CtdlRegisterProtoHook(cmd_msg3, "MSG3", "Output a message in raw format (deprecated)");
5444                 CtdlRegisterProtoHook(cmd_msg4, "MSG4", "Output a message in the client's preferred format");
5445                 CtdlRegisterProtoHook(cmd_msgp, "MSGP", "Select preferred format for MSG4 output");
5446                 CtdlRegisterProtoHook(cmd_opna, "OPNA", "Open an attachment for download");
5447                 CtdlRegisterProtoHook(cmd_dlat, "DLAT", "Download an attachment");
5448                 CtdlRegisterProtoHook(cmd_ent0, "ENT0", "Enter a message");
5449                 CtdlRegisterProtoHook(cmd_dele, "DELE", "Delete a message");
5450                 CtdlRegisterProtoHook(cmd_move, "MOVE", "Move or copy a message to another room");
5451                 CtdlRegisterProtoHook(cmd_isme, "ISME", "Determine whether an email address belongs to a user");
5452         }
5453
5454         /* return our Subversion id for the Log */
5455         return "msgbase";
5456 }