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
  42 #include "md5.h"
  43
  44 #include <libcitadel.h>
  45 #include "citadel.h"
  46 #include "server.h"
  47 #include "serv_extensions.h"
  48 #include "database.h"
  49 #include "msgbase.h"
  50 #include "support.h"
  51 #include "sysdep_decls.h"
  52 #include "citserver.h"
  53 #include "room_ops.h"
  54 #include "user_ops.h"
  55 #include "file_ops.h"
  56 #include "config.h"
  57 #include "control.h"
  58 #include "genstamp.h"
  59 #include "internet_addressing.h"
  60 #include "euidindex.h"
  61 #include "journaling.h"
  62 #include "citadel_dirs.h"
  63 #include "clientsocket.h"
  64 #include "threads.h"
  65
  66 #include "ctdl_module.h"
  67
  68 long config_msgnum;
  69 struct addresses_to_be_filed *atbf = NULL;
  70
  71 /* This temp file holds the queue of operations for AdjRefCount() */
  72 static FILE *arcfp = NULL;
  73 void AdjRefCountList(long *msgnum, long nmsg, int incr);
  74
  75 int MessageDebugEnabled = 0;
  76
  77 /*
  78  * These are the four-character field headers we use when outputting
  79  * messages in Citadel format (as opposed to RFC822 format).
  80  */
  81 char *msgkeys[] = {
  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, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  88         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  89         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  90         NULL,
  91         "from", /* A */
  92         NULL,   /* B */
  93         NULL,   /* C */
  94         NULL,   /* D */
  95         "exti", /* E */
  96         "rfca", /* F */
  97         NULL,   /* G */
  98         "hnod", /* H */
  99         "msgn", /* I */
 100         "jrnl", /* J */
 101         "rep2", /* K */
 102         "list", /* L */
 103         "text", /* M */
 104         "node", /* N */
 105         "room", /* O */
 106         "path", /* P */
 107         NULL,   /* Q */
 108         "rcpt", /* R */
 109         "spec", /* S */
 110         "time", /* T */
 111         "subj", /* U */
 112         "nvto", /* V */
 113         "wefw", /* W */
 114         NULL,   /* X */
 115         "cccc", /* Y */
 116         NULL    /* Z */
 117 };
 118
 119 /*
 120  * This function is self explanatory.
 121  * (What can I say, I'm in a weird mood today...)
 122  */
 123 void remove_any_whitespace_to_the_left_or_right_of_at_symbol(char *name)
 124 {
 125         int i;
 126
 127         for (i = 0; i < strlen(name); ++i) {
 128                 if (name[i] == '@') {
 129                         while (isspace(name[i - 1]) && i > 0) {
 130                                 strcpy(&name[i - 1], &name[i]);
 131                                 --i;
 132                         }
 133                         while (isspace(name[i + 1])) {
 134                                 strcpy(&name[i + 1], &name[i + 2]);
 135                         }
 136                 }
 137         }
 138 }
 139
 140
 141 /*
 142  * Aliasing for network mail.
 143  * (Error messages have been commented out, because this is a server.)
 144  */
 145 int alias(char *name)
 146 {                               /* process alias and routing info for mail */
 147         struct CitContext *CCC = CC;
 148         FILE *fp;
 149         int a, i;
 150         char aaa[SIZ], bbb[SIZ];
 151         char *ignetcfg = NULL;
 152         char *ignetmap = NULL;
 153         int at = 0;
 154         char node[64];
 155         char testnode[64];
 156         char buf[SIZ];
 157
 158         char original_name[256];
 159         safestrncpy(original_name, name, sizeof original_name);
 160
 161         striplt(name);
 162         remove_any_whitespace_to_the_left_or_right_of_at_symbol(name);
 163         stripallbut(name, '<', '>');
 164
 165         fp = fopen(file_mail_aliases, "r");
 166         if (fp == NULL) {
 167                 fp = fopen("/dev/null", "r");
 168         }
 169         if (fp == NULL) {
 170                 return (MES_ERROR);
 171         }
 172         strcpy(aaa, "");
 173         strcpy(bbb, "");
 174         while (fgets(aaa, sizeof aaa, fp) != NULL) {
 175                 while (isspace(name[0]))
 176                         strcpy(name, &name[1]);
 177                 aaa[strlen(aaa) - 1] = 0;
 178                 strcpy(bbb, "");
 179                 for (a = 0; a < strlen(aaa); ++a) {
 180                         if (aaa[a] == ',') {
 181                                 strcpy(bbb, &aaa[a + 1]);
 182                                 aaa[a] = 0;
 183                         }
 184                 }
 185                 if (!strcasecmp(name, aaa))
 186                         strcpy(name, bbb);
 187         }
 188         fclose(fp);
 189
 190         /* Hit the Global Address Book */
 191         if (CtdlDirectoryLookup(aaa, name, sizeof aaa) == 0) {
 192                 strcpy(name, aaa);
 193         }
 194
 195         if (strcasecmp(original_name, name)) {
 196                 MSG_syslog(LOG_INFO, "%s is being forwarded to %s\n", original_name, name);
 197         }
 198
 199         /* Change "user @ xxx" to "user" if xxx is an alias for this host */
 200         for (a=0; a<strlen(name); ++a) {
 201                 if (name[a] == '@') {
 202                         if (CtdlHostAlias(&name[a+1]) == hostalias_localhost) {
 203                                 name[a] = 0;
 204                                 MSG_syslog(LOG_INFO, "Changed to <%s>\n", name);
 205                         }
 206                 }
 207         }
 208
 209         /* determine local or remote type, see citadel.h */
 210         at = haschar(name, '@');
 211         if (at == 0) return(MES_LOCAL);         /* no @'s - local address */
 212         if (at > 1) return(MES_ERROR);          /* >1 @'s - invalid address */
 213         remove_any_whitespace_to_the_left_or_right_of_at_symbol(name);
 214
 215         /* figure out the delivery mode */
 216         extract_token(node, name, 1, '@', sizeof node);
 217
 218         /* If there are one or more dots in the nodename, we assume that it
 219          * is an FQDN and will attempt SMTP delivery to the Internet.
 220          */
 221         if (haschar(node, '.') > 0) {
 222                 return(MES_INTERNET);
 223         }
 224
 225         /* Otherwise we look in the IGnet maps for a valid Citadel node.
 226          * Try directly-connected nodes first...
 227          */
 228         ignetcfg = CtdlGetSysConfig(IGNETCFG);
 229         for (i=0; i<num_tokens(ignetcfg, '\n'); ++i) {
 230                 extract_token(buf, ignetcfg, i, '\n', sizeof buf);
 231                 extract_token(testnode, buf, 0, '|', sizeof testnode);
 232                 if (!strcasecmp(node, testnode)) {
 233                         free(ignetcfg);
 234                         return(MES_IGNET);
 235                 }
 236         }
 237         free(ignetcfg);
 238
 239         /*
 240          * Then try nodes that are two or more hops away.
 241          */
 242         ignetmap = CtdlGetSysConfig(IGNETMAP);
 243         for (i=0; i<num_tokens(ignetmap, '\n'); ++i) {
 244                 extract_token(buf, ignetmap, i, '\n', sizeof buf);
 245                 extract_token(testnode, buf, 0, '|', sizeof testnode);
 246                 if (!strcasecmp(node, testnode)) {
 247                         free(ignetmap);
 248                         return(MES_IGNET);
 249                 }
 250         }
 251         free(ignetmap);
 252
 253         /* If we get to this point it's an invalid node name */
 254         return (MES_ERROR);
 255 }
 256
 257
 258 /*
 259  * Back end for the MSGS command: output message number only.
 260  */
 261 void simple_listing(long msgnum, void *userdata)
 262 {
 263         cprintf("%ld\n", msgnum);
 264 }
 265
 266
 267
 268 /*
 269  * Back end for the MSGS command: output header summary.
 270  */
 271 void headers_listing(long msgnum, void *userdata)
 272 {
 273         struct CtdlMessage *msg;
 274
 275         msg = CtdlFetchMessage(msgnum, 0);
 276         if (msg == NULL) {
 277                 cprintf("%ld|0|||||\n", msgnum);
 278                 return;
 279         }
 280
 281         cprintf("%ld|%s|%s|%s|%s|%s|\n",
 282                 msgnum,
 283                 (msg->cm_fields['T'] ? msg->cm_fields['T'] : "0"),
 284                 (msg->cm_fields['A'] ? msg->cm_fields['A'] : ""),
 285                 (msg->cm_fields['N'] ? msg->cm_fields['N'] : ""),
 286                 (msg->cm_fields['F'] ? msg->cm_fields['F'] : ""),
 287                 (msg->cm_fields['U'] ? msg->cm_fields['U'] : "")
 288         );
 289         CtdlFreeMessage(msg);
 290 }
 291
 292 /*
 293  * Back end for the MSGS command: output EUID header.
 294  */
 295 void headers_euid(long msgnum, void *userdata)
 296 {
 297         struct CtdlMessage *msg;
 298
 299         msg = CtdlFetchMessage(msgnum, 0);
 300         if (msg == NULL) {
 301                 cprintf("%ld||\n", msgnum);
 302                 return;
 303         }
 304
 305         cprintf("%ld|%s|%s\n",
 306                 msgnum,
 307                 (msg->cm_fields['E'] ? msg->cm_fields['E'] : ""),
 308                 (msg->cm_fields['T'] ? msg->cm_fields['T'] : "0"));
 309         CtdlFreeMessage(msg);
 310 }
 311
 312
 313
 314
 315
 316 /* Determine if a given message matches the fields in a message template.
 317  * Return 0 for a successful match.
 318  */
 319 int CtdlMsgCmp(struct CtdlMessage *msg, struct CtdlMessage *template) {
 320         int i;
 321
 322         /* If there aren't any fields in the template, all messages will
 323          * match.
 324          */
 325         if (template == NULL) return(0);
 326
 327         /* Null messages are bogus. */
 328         if (msg == NULL) return(1);
 329
 330         for (i='A'; i<='Z'; ++i) {
 331                 if (template->cm_fields[i] != NULL) {
 332                         if (msg->cm_fields[i] == NULL) {
 333                                 /* Considered equal if temmplate is empty string */
 334                                 if (IsEmptyStr(template->cm_fields[i])) continue;
 335                                 return 1;
 336                         }
 337                         if (strcasecmp(msg->cm_fields[i],
 338                                 template->cm_fields[i])) return 1;
 339                 }
 340         }
 341
 342         /* All compares succeeded: we have a match! */
 343         return 0;
 344 }
 345
 346
 347
 348 /*
 349  * Retrieve the "seen" message list for the current room.
 350  */
 351 void CtdlGetSeen(char *buf, int which_set) {
 352         struct CitContext *CCC = CC;
 353         visit vbuf;
 354
 355         /* Learn about the user and room in question */
 356         CtdlGetRelationship(&vbuf, &CCC->user, &CCC->room);
 357
 358         if (which_set == ctdlsetseen_seen)
 359                 safestrncpy(buf, vbuf.v_seen, SIZ);
 360         if (which_set == ctdlsetseen_answered)
 361                 safestrncpy(buf, vbuf.v_answered, SIZ);
 362 }
 363
 364
 365
 366 /*
 367  * Manipulate the "seen msgs" string (or other message set strings)
 368  */
 369 void CtdlSetSeen(long *target_msgnums, int num_target_msgnums,
 370                 int target_setting, int which_set,
 371                 struct ctdluser *which_user, struct ctdlroom *which_room) {
 372         struct CitContext *CCC = CC;
 373         struct cdbdata *cdbfr;
 374         int i, k;
 375         int is_seen = 0;
 376         int was_seen = 0;
 377         long lo = (-1L);
 378         long hi = (-1L); /// TODO: we just write here. y?
 379         visit vbuf;
 380         long *msglist;
 381         int num_msgs = 0;
 382         StrBuf *vset;
 383         StrBuf *setstr;
 384         StrBuf *lostr;
 385         StrBuf *histr;
 386         const char *pvset;
 387         char *is_set;   /* actually an array of booleans */
 388
 389         /* Don't bother doing *anything* if we were passed a list of zero messages */
 390         if (num_target_msgnums < 1) {
 391                 return;
 392         }
 393
 394         /* If no room was specified, we go with the current room. */
 395         if (!which_room) {
 396                 which_room = &CCC->room;
 397         }
 398
 399         /* If no user was specified, we go with the current user. */
 400         if (!which_user) {
 401                 which_user = &CCC->user;
 402         }
 403
 404         MSG_syslog(LOG_DEBUG, "CtdlSetSeen(%d msgs starting with %ld, %s, %d) in <%s>\n",
 405                    num_target_msgnums, target_msgnums[0],
 406                    (target_setting ? "SET" : "CLEAR"),
 407                    which_set,
 408                    which_room->QRname);
 409
 410         /* Learn about the user and room in question */
 411         CtdlGetRelationship(&vbuf, which_user, which_room);
 412
 413         /* Load the message list */
 414         cdbfr = cdb_fetch(CDB_MSGLISTS, &which_room->QRnumber, sizeof(long));
 415         if (cdbfr != NULL) {
 416                 msglist = (long *) cdbfr->ptr;
 417                 cdbfr->ptr = NULL;      /* CtdlSetSeen() now owns this memory */
 418                 num_msgs = cdbfr->len / sizeof(long);
 419                 cdb_free(cdbfr);
 420         } else {
 421                 return; /* No messages at all?  No further action. */
 422         }
 423
 424         is_set = malloc(num_msgs * sizeof(char));
 425         memset(is_set, 0, (num_msgs * sizeof(char)) );
 426
 427         /* Decide which message set we're manipulating */
 428         switch(which_set) {
 429         case ctdlsetseen_seen:
 430                 vset = NewStrBufPlain(vbuf.v_seen, -1);
 431                 break;
 432         case ctdlsetseen_answered:
 433                 vset = NewStrBufPlain(vbuf.v_answered, -1);
 434                 break;
 435         default:
 436                 vset = NewStrBuf();
 437         }
 438
 439
 440 #if 0   /* This is a special diagnostic section.  Do not allow it to run during normal operation. */
 441         MSG_syslog(LOG_DEBUG, "There are %d messages in the room.\n", num_msgs);
 442         for (i=0; i<num_msgs; ++i) {
 443                 if ((i > 0) && (msglist[i] <= msglist[i-1])) abort();
 444         }
 445         MSG_syslog(LOG_DEBUG, "We are twiddling %d of them.\n", num_target_msgnums);
 446         for (k=0; k<num_target_msgnums; ++k) {
 447                 if ((k > 0) && (target_msgnums[k] <= target_msgnums[k-1])) abort();
 448         }
 449 #endif
 450
 451         MSG_syslog(LOG_DEBUG, "before update: %s\n", ChrPtr(vset));
 452
 453         /* Translate the existing sequence set into an array of booleans */
 454         setstr = NewStrBuf();
 455         lostr = NewStrBuf();
 456         histr = NewStrBuf();
 457         pvset = NULL;
 458         while (StrBufExtract_NextToken(setstr, vset, &pvset, ',') >= 0) {
 459
 460                 StrBufExtract_token(lostr, setstr, 0, ':');
 461                 if (StrBufNum_tokens(setstr, ':') >= 2) {
 462                         StrBufExtract_token(histr, setstr, 1, ':');
 463                 }
 464                 else {
 465                         FlushStrBuf(histr);
 466                         StrBufAppendBuf(histr, lostr, 0);
 467                 }
 468                 lo = StrTol(lostr);
 469                 if (!strcmp(ChrPtr(histr), "*")) {
 470                         hi = LONG_MAX;
 471                 }
 472                 else {
 473                         hi = StrTol(histr);
 474                 }
 475
 476                 for (i = 0; i < num_msgs; ++i) {
 477                         if ((msglist[i] >= lo) && (msglist[i] <= hi)) {
 478                                 is_set[i] = 1;
 479                         }
 480                 }
 481         }
 482         FreeStrBuf(&setstr);
 483         FreeStrBuf(&lostr);
 484         FreeStrBuf(&histr);
 485
 486
 487         /* Now translate the array of booleans back into a sequence set */
 488         FlushStrBuf(vset);
 489         was_seen = 0;
 490         lo = (-1);
 491         hi = (-1);
 492
 493         for (i=0; i<num_msgs; ++i) {
 494                 is_seen = is_set[i];
 495
 496                 /* Apply changes */
 497                 for (k=0; k<num_target_msgnums; ++k) {
 498                         if (msglist[i] == target_msgnums[k]) {
 499                                 is_seen = target_setting;
 500                         }
 501                 }
 502
 503                 if ((was_seen == 0) && (is_seen == 1)) {
 504                         lo = msglist[i];
 505                 }
 506                 else if ((was_seen == 1) && (is_seen == 0)) {
 507                         hi = msglist[i-1];
 508
 509                         if (StrLength(vset) > 0) {
 510                                 StrBufAppendBufPlain(vset, HKEY(","), 0);
 511                         }
 512                         if (lo == hi) {
 513                                 StrBufAppendPrintf(vset, "%ld", hi);
 514                         }
 515                         else {
 516                                 StrBufAppendPrintf(vset, "%ld:%ld", lo, hi);
 517                         }
 518                 }
 519
 520                 if ((is_seen) && (i == num_msgs - 1)) {
 521                         if (StrLength(vset) > 0) {
 522                                 StrBufAppendBufPlain(vset, HKEY(","), 0);
 523                         }
 524                         if ((i==0) || (was_seen == 0)) {
 525                                 StrBufAppendPrintf(vset, "%ld", msglist[i]);
 526                         }
 527                         else {
 528                                 StrBufAppendPrintf(vset, "%ld:%ld", lo, msglist[i]);
 529                         }
 530                 }
 531
 532                 was_seen = is_seen;
 533         }
 534
 535         /*
 536          * We will have to stuff this string back into a 4096 byte buffer, so if it's
 537          * larger than that now, truncate it by removing tokens from the beginning.
 538          * The limit of 100 iterations is there to prevent an infinite loop in case
 539          * something unexpected happens.
 540          */
 541         int number_of_truncations = 0;
 542         while ( (StrLength(vset) > SIZ) && (number_of_truncations < 100) ) {
 543                 StrBufRemove_token(vset, 0, ',');
 544                 ++number_of_truncations;
 545         }
 546
 547         /*
 548          * If we're truncating the sequence set of messages marked with the 'seen' flag,
 549          * we want the earliest messages (the truncated ones) to be marked, not unmarked.
 550          * Otherwise messages at the beginning will suddenly appear to be 'unseen'.
 551          */
 552         if ( (which_set == ctdlsetseen_seen) && (number_of_truncations > 0) ) {
 553                 StrBuf *first_tok;
 554                 first_tok = NewStrBuf();
 555                 StrBufExtract_token(first_tok, vset, 0, ',');
 556                 StrBufRemove_token(vset, 0, ',');
 557
 558                 if (StrBufNum_tokens(first_tok, ':') > 1) {
 559                         StrBufRemove_token(first_tok, 0, ':');
 560                 }
 561
 562                 StrBuf *new_set;
 563                 new_set = NewStrBuf();
 564                 StrBufAppendBufPlain(new_set, HKEY("1:"), 0);
 565                 StrBufAppendBuf(new_set, first_tok, 0);
 566                 StrBufAppendBufPlain(new_set, HKEY(":"), 0);
 567                 StrBufAppendBuf(new_set, vset, 0);
 568
 569                 FreeStrBuf(&vset);
 570                 FreeStrBuf(&first_tok);
 571                 vset = new_set;
 572         }
 573
 574         MSG_syslog(LOG_DEBUG, " after update: %s\n", ChrPtr(vset));
 575
 576         /* Decide which message set we're manipulating */
 577         switch (which_set) {
 578                 case ctdlsetseen_seen:
 579                         safestrncpy(vbuf.v_seen, ChrPtr(vset), sizeof vbuf.v_seen);
 580                         break;
 581                 case ctdlsetseen_answered:
 582                         safestrncpy(vbuf.v_answered, ChrPtr(vset), sizeof vbuf.v_answered);
 583                         break;
 584         }
 585
 586         free(is_set);
 587         free(msglist);
 588         CtdlSetRelationship(&vbuf, which_user, which_room);
 589         FreeStrBuf(&vset);
 590 }
 591
 592
 593 /*
 594  * API function to perform an operation for each qualifying message in the
 595  * current room.  (Returns the number of messages processed.)
 596  */
 597 int CtdlForEachMessage(int mode, long ref, char *search_string,
 598                         char *content_type,
 599                         struct CtdlMessage *compare,
 600                         ForEachMsgCallback CallBack,
 601                         void *userdata)
 602 {
 603         struct CitContext *CCC = CC;
 604         int a, i, j;
 605         visit vbuf;
 606         struct cdbdata *cdbfr;
 607         long *msglist = NULL;
 608         int num_msgs = 0;
 609         int num_processed = 0;
 610         long thismsg;
 611         struct MetaData smi;
 612         struct CtdlMessage *msg = NULL;
 613         int is_seen = 0;
 614         long lastold = 0L;
 615         int printed_lastold = 0;
 616         int num_search_msgs = 0;
 617         long *search_msgs = NULL;
 618         regex_t re;
 619         int need_to_free_re = 0;
 620         regmatch_t pm;
 621
 622         if ((content_type) && (!IsEmptyStr(content_type))) {
 623                 regcomp(&re, content_type, 0);
 624                 need_to_free_re = 1;
 625         }
 626
 627         /* Learn about the user and room in question */
 628         if (server_shutting_down) {
 629                 if (need_to_free_re) regfree(&re);
 630                 return -1;
 631         }
 632         CtdlGetUser(&CCC->user, CCC->curr_user);
 633
 634         if (server_shutting_down) {
 635                 if (need_to_free_re) regfree(&re);
 636                 return -1;
 637         }
 638         CtdlGetRelationship(&vbuf, &CCC->user, &CCC->room);
 639
 640         if (server_shutting_down) {
 641                 if (need_to_free_re) regfree(&re);
 642                 return -1;
 643         }
 644
 645         /* Load the message list */
 646         cdbfr = cdb_fetch(CDB_MSGLISTS, &CCC->room.QRnumber, sizeof(long));
 647         if (cdbfr == NULL) {
 648                 if (need_to_free_re) regfree(&re);
 649                 return 0;       /* No messages at all?  No further action. */
 650         }
 651
 652         msglist = (long *) cdbfr->ptr;
 653         num_msgs = cdbfr->len / sizeof(long);
 654
 655         cdbfr->ptr = NULL;      /* clear this so that cdb_free() doesn't free it */
 656         cdb_free(cdbfr);        /* we own this memory now */
 657
 658         /*
 659          * Now begin the traversal.
 660          */
 661         if (num_msgs > 0) for (a = 0; a < num_msgs; ++a) {
 662
 663                 /* If the caller is looking for a specific MIME type, filter
 664                  * out all messages which are not of the type requested.
 665                  */
 666                 if ((content_type != NULL) && (!IsEmptyStr(content_type))) {
 667
 668                         /* This call to GetMetaData() sits inside this loop
 669                          * so that we only do the extra database read per msg
 670                          * if we need to.  Doing the extra read all the time
 671                          * really kills the server.  If we ever need to use
 672                          * metadata for another search criterion, we need to
 673                          * move the read somewhere else -- but still be smart
 674                          * enough to only do the read if the caller has
 675                          * specified something that will need it.
 676                          */
 677                         if (server_shutting_down) {
 678                                 if (need_to_free_re) regfree(&re);
 679                                 free(msglist);
 680                                 return -1;
 681                         }
 682                         GetMetaData(&smi, msglist[a]);
 683
 684                         /* if (strcasecmp(smi.meta_content_type, content_type)) { old non-regex way */
 685                         if (regexec(&re, smi.meta_content_type, 1, &pm, 0) != 0) {
 686                                 msglist[a] = 0L;
 687                         }
 688                 }
 689         }
 690
 691         num_msgs = sort_msglist(msglist, num_msgs);
 692
 693         /* If a template was supplied, filter out the messages which
 694          * don't match.  (This could induce some delays!)
 695          */
 696         if (num_msgs > 0) {
 697                 if (compare != NULL) {
 698                         for (a = 0; a < num_msgs; ++a) {
 699                                 if (server_shutting_down) {
 700                                         if (need_to_free_re) regfree(&re);
 701                                         free(msglist);
 702                                         return -1;
 703                                 }
 704                                 msg = CtdlFetchMessage(msglist[a], 1);
 705                                 if (msg != NULL) {
 706                                         if (CtdlMsgCmp(msg, compare)) {
 707                                                 msglist[a] = 0L;
 708                                         }
 709                                         CtdlFreeMessage(msg);
 710                                 }
 711                         }
 712                 }
 713         }
 714
 715         /* If a search string was specified, get a message list from
 716          * the full text index and remove messages which aren't on both
 717          * lists.
 718          *
 719          * How this works:
 720          * Since the lists are sorted and strictly ascending, and the
 721          * output list is guaranteed to be shorter than or equal to the
 722          * input list, we overwrite the bottom of the input list.  This
 723          * eliminates the need to memmove big chunks of the list over and
 724          * over again.
 725          */
 726         if ( (num_msgs > 0) && (mode == MSGS_SEARCH) && (search_string) ) {
 727
 728                 /* Call search module via hook mechanism.
 729                  * NULL means use any search function available.
 730                  * otherwise replace with a char * to name of search routine
 731                  */
 732                 CtdlModuleDoSearch(&num_search_msgs, &search_msgs, search_string, "fulltext");
 733
 734                 if (num_search_msgs > 0) {
 735
 736                         int orig_num_msgs;
 737
 738                         orig_num_msgs = num_msgs;
 739                         num_msgs = 0;
 740                         for (i=0; i<orig_num_msgs; ++i) {
 741                                 for (j=0; j<num_search_msgs; ++j) {
 742                                         if (msglist[i] == search_msgs[j]) {
 743                                                 msglist[num_msgs++] = msglist[i];
 744                                         }
 745                                 }
 746                         }
 747                 }
 748                 else {
 749                         num_msgs = 0;   /* No messages qualify */
 750                 }
 751                 if (search_msgs != NULL) free(search_msgs);
 752
 753                 /* Now that we've purged messages which don't contain the search
 754                  * string, treat a MSGS_SEARCH just like a MSGS_ALL from this
 755                  * point on.
 756                  */
 757                 mode = MSGS_ALL;
 758         }
 759
 760         /*
 761          * Now iterate through the message list, according to the
 762          * criteria supplied by the caller.
 763          */
 764         if (num_msgs > 0)
 765                 for (a = 0; a < num_msgs; ++a) {
 766                         if (server_shutting_down) {
 767                                 if (need_to_free_re) regfree(&re);
 768                                 free(msglist);
 769                                 return num_processed;
 770                         }
 771                         thismsg = msglist[a];
 772                         if (mode == MSGS_ALL) {
 773                                 is_seen = 0;
 774                         }
 775                         else {
 776                                 is_seen = is_msg_in_sequence_set(
 777                                                         vbuf.v_seen, thismsg);
 778                                 if (is_seen) lastold = thismsg;
 779                         }
 780                         if ((thismsg > 0L)
 781                             && (
 782
 783                                        (mode == MSGS_ALL)
 784                                        || ((mode == MSGS_OLD) && (is_seen))
 785                                        || ((mode == MSGS_NEW) && (!is_seen))
 786                                        || ((mode == MSGS_LAST) && (a >= (num_msgs - ref)))
 787                                    || ((mode == MSGS_FIRST) && (a < ref))
 788                                 || ((mode == MSGS_GT) && (thismsg > ref))
 789                                 || ((mode == MSGS_LT) && (thismsg < ref))
 790                                 || ((mode == MSGS_EQ) && (thismsg == ref))
 791                             )
 792                             ) {
 793                                 if ((mode == MSGS_NEW) && (CCC->user.flags & US_LASTOLD) && (lastold > 0L) && (printed_lastold == 0) && (!is_seen)) {
 794                                         if (CallBack)
 795                                                 CallBack(lastold, userdata);
 796                                         printed_lastold = 1;
 797                                         ++num_processed;
 798                                 }
 799                                 if (CallBack) CallBack(thismsg, userdata);
 800                                 ++num_processed;
 801                         }
 802                 }
 803         if (need_to_free_re) regfree(&re);
 804
 805         /*
 806          * We cache the most recent msglist in order to do security checks later
 807          */
 808         if (CCC->client_socket > 0) {
 809                 if (CCC->cached_msglist != NULL) {
 810                         free(CCC->cached_msglist);
 811                 }
 812                 CCC->cached_msglist = msglist;
 813                 CCC->cached_num_msgs = num_msgs;
 814         }
 815         else {
 816                 free(msglist);
 817         }
 818
 819         return num_processed;
 820 }
 821
 822
 823
 824 /*
 825  * cmd_msgs()  -  get list of message #'s in this room
 826  *              implements the MSGS server command using CtdlForEachMessage()
 827  */
 828 void cmd_msgs(char *cmdbuf)
 829 {
 830         int mode = 0;
 831         char which[16];
 832         char buf[256];
 833         char tfield[256];
 834         char tvalue[256];
 835         int cm_ref = 0;
 836         int i;
 837         int with_template = 0;
 838         struct CtdlMessage *template = NULL;
 839         char search_string[1024];
 840         ForEachMsgCallback CallBack;
 841
 842         if (CtdlAccessCheck(ac_logged_in_or_guest)) return;
 843
 844         extract_token(which, cmdbuf, 0, '|', sizeof which);
 845         cm_ref = extract_int(cmdbuf, 1);
 846         extract_token(search_string, cmdbuf, 1, '|', sizeof search_string);
 847         with_template = extract_int(cmdbuf, 2);
 848         switch (extract_int(cmdbuf, 3))
 849         {
 850         default:
 851         case MSG_HDRS_BRIEF:
 852                 CallBack = simple_listing;
 853                 break;
 854         case MSG_HDRS_ALL:
 855                 CallBack = headers_listing;
 856                 break;
 857         case MSG_HDRS_EUID:
 858                 CallBack = headers_euid;
 859                 break;
 860         }
 861
 862         strcat(which, "   ");
 863         if (!strncasecmp(which, "OLD", 3))
 864                 mode = MSGS_OLD;
 865         else if (!strncasecmp(which, "NEW", 3))
 866                 mode = MSGS_NEW;
 867         else if (!strncasecmp(which, "FIRST", 5))
 868                 mode = MSGS_FIRST;
 869         else if (!strncasecmp(which, "LAST", 4))
 870                 mode = MSGS_LAST;
 871         else if (!strncasecmp(which, "GT", 2))
 872                 mode = MSGS_GT;
 873         else if (!strncasecmp(which, "LT", 2))
 874                 mode = MSGS_LT;
 875         else if (!strncasecmp(which, "SEARCH", 6))
 876                 mode = MSGS_SEARCH;
 877         else
 878                 mode = MSGS_ALL;
 879
 880         if ( (mode == MSGS_SEARCH) && (!config.c_enable_fulltext) ) {
 881                 cprintf("%d Full text index is not enabled on this server.\n",
 882                         ERROR + CMD_NOT_SUPPORTED);
 883                 return;
 884         }
 885
 886         if (with_template) {
 887                 unbuffer_output();
 888                 cprintf("%d Send template then receive message list\n",
 889                         START_CHAT_MODE);
 890                 template = (struct CtdlMessage *)
 891                         malloc(sizeof(struct CtdlMessage));
 892                 memset(template, 0, sizeof(struct CtdlMessage));
 893                 template->cm_magic = CTDLMESSAGE_MAGIC;
 894                 template->cm_anon_type = MES_NORMAL;
 895
 896                 while(client_getln(buf, sizeof buf) >= 0 && strcmp(buf,"000")) {
 897                         extract_token(tfield, buf, 0, '|', sizeof tfield);
 898                         extract_token(tvalue, buf, 1, '|', sizeof tvalue);
 899                         for (i='A'; i<='Z'; ++i) if (msgkeys[i]!=NULL) {
 900                                 if (!strcasecmp(tfield, msgkeys[i])) {
 901                                         template->cm_fields[i] =
 902                                                 strdup(tvalue);
 903                                 }
 904                         }
 905                 }
 906                 buffer_output();
 907         }
 908         else {
 909                 cprintf("%d  \n", LISTING_FOLLOWS);
 910         }
 911
 912         CtdlForEachMessage(mode,
 913                            ( (mode == MSGS_SEARCH) ? 0 : cm_ref ),
 914                            ( (mode == MSGS_SEARCH) ? search_string : NULL ),
 915                            NULL,
 916                            template,
 917                            CallBack,
 918                            NULL);
 919         if (template != NULL) CtdlFreeMessage(template);
 920         cprintf("000\n");
 921 }
 922
 923
 924
 925
 926 /*
 927  * help_subst()  -  support routine for help file viewer
 928  */
 929 void help_subst(char *strbuf, char *source, char *dest)
 930 {
 931         char workbuf[SIZ];
 932         int p;
 933
 934         while (p = pattern2(strbuf, source), (p >= 0)) {
 935                 strcpy(workbuf, &strbuf[p + strlen(source)]);
 936                 strcpy(&strbuf[p], dest);
 937                 strcat(strbuf, workbuf);
 938         }
 939 }
 940
 941
 942 void do_help_subst(char *buffer)
 943 {
 944         char buf2[16];
 945
 946         help_subst(buffer, "^nodename", config.c_nodename);
 947         help_subst(buffer, "^humannode", config.c_humannode);
 948         help_subst(buffer, "^fqdn", config.c_fqdn);
 949         help_subst(buffer, "^username", CC->user.fullname);
 950         snprintf(buf2, sizeof buf2, "%ld", CC->user.usernum);
 951         help_subst(buffer, "^usernum", buf2);
 952         help_subst(buffer, "^sysadm", config.c_sysadm);
 953         help_subst(buffer, "^variantname", CITADEL);
 954         snprintf(buf2, sizeof buf2, "%d", config.c_maxsessions);
 955         help_subst(buffer, "^maxsessions", buf2);
 956         help_subst(buffer, "^bbsdir", ctdl_message_dir);
 957 }
 958
 959
 960
 961 /*
 962  * memfmout()  -  Citadel text formatter and paginator.
 963  *           Although the original purpose of this routine was to format
 964  *           text to the reader's screen width, all we're really using it
 965  *           for here is to format text out to 80 columns before sending it
 966  *           to the client.  The client software may reformat it again.
 967  */
 968 void memfmout(
 969         char *mptr,             /* where are we going to get our text from? */
 970         const char *nl          /* string to terminate lines with */
 971 ) {
 972         struct CitContext *CCC = CC;
 973         int column = 0;
 974         unsigned char ch = 0;
 975         char outbuf[1024];
 976         int len = 0;
 977         int nllen = 0;
 978
 979         if (!mptr) return;
 980         nllen = strlen(nl);
 981         while (ch=*(mptr++), ch != 0) {
 982
 983                 if (ch == '\n') {
 984                         if (client_write(outbuf, len) == -1)
 985                         {
 986                                 MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
 987                                 return;
 988                         }
 989                         len = 0;
 990                         if (client_write(nl, nllen) == -1)
 991                         {
 992                                 MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
 993                                 return;
 994                         }
 995                         column = 0;
 996                 }
 997                 else if (ch == '\r') {
 998                         /* Ignore carriage returns.  Newlines are always LF or CRLF but never CR. */
 999                 }
1000                 else if (isspace(ch)) {
1001                         if (column > 72) {              /* Beyond 72 columns, break on the next space */
1002                                 if (client_write(outbuf, len) == -1)
1003                                 {
1004                                         MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1005                                         return;
1006                                 }
1007                                 len = 0;
1008                                 if (client_write(nl, nllen) == -1)
1009                                 {
1010                                         MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1011                                         return;
1012                                 }
1013                                 column = 0;
1014                         }
1015                         else {
1016                                 outbuf[len++] = ch;
1017                                 ++column;
1018                         }
1019                 }
1020                 else {
1021                         outbuf[len++] = ch;
1022                         ++column;
1023                         if (column > 1000) {            /* Beyond 1000 columns, break anywhere */
1024                                 if (client_write(outbuf, len) == -1)
1025                                 {
1026                                         MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1027                                         return;
1028                                 }
1029                                 len = 0;
1030                                 if (client_write(nl, nllen) == -1)
1031                                 {
1032                                         MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1033                                         return;
1034                                 }
1035                                 column = 0;
1036                         }
1037                 }
1038         }
1039         if (len) {
1040                 if (client_write(outbuf, len) == -1)
1041                 {
1042                         MSGM_syslog(LOG_ERR, "memfmout(): aborting due to write failure.\n");
1043                         return;
1044                 }
1045                 len = 0;
1046                 client_write(nl, nllen);
1047                 column = 0;
1048         }
1049 }
1050
1051
1052
1053 /*
1054  * Callback function for mime parser that simply lists the part
1055  */
1056 void list_this_part(char *name, char *filename, char *partnum, char *disp,
1057                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1058                     char *cbid, void *cbuserdata)
1059 {
1060         struct ma_info *ma;
1061
1062         ma = (struct ma_info *)cbuserdata;
1063         if (ma->is_ma == 0) {
1064                 cprintf("part=%s|%s|%s|%s|%s|%ld|%s|%s\n",
1065                         name,
1066                         filename,
1067                         partnum,
1068                         disp,
1069                         cbtype,
1070                         (long)length,
1071                         cbid,
1072                         cbcharset);
1073         }
1074 }
1075
1076 /*
1077  * Callback function for multipart prefix
1078  */
1079 void list_this_pref(char *name, char *filename, char *partnum, char *disp,
1080                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1081                     char *cbid, void *cbuserdata)
1082 {
1083         struct ma_info *ma;
1084
1085         ma = (struct ma_info *)cbuserdata;
1086         if (!strcasecmp(cbtype, "multipart/alternative")) {
1087                 ++ma->is_ma;
1088         }
1089
1090         if (ma->is_ma == 0) {
1091                 cprintf("pref=%s|%s\n", partnum, cbtype);
1092         }
1093 }
1094
1095 /*
1096  * Callback function for multipart sufffix
1097  */
1098 void list_this_suff(char *name, char *filename, char *partnum, char *disp,
1099                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1100                     char *cbid, void *cbuserdata)
1101 {
1102         struct ma_info *ma;
1103
1104         ma = (struct ma_info *)cbuserdata;
1105         if (ma->is_ma == 0) {
1106                 cprintf("suff=%s|%s\n", partnum, cbtype);
1107         }
1108         if (!strcasecmp(cbtype, "multipart/alternative")) {
1109                 --ma->is_ma;
1110         }
1111 }
1112
1113
1114 /*
1115  * Callback function for mime parser that opens a section for downloading
1116  */
1117 void mime_download(char *name, char *filename, char *partnum, char *disp,
1118                    void *content, char *cbtype, char *cbcharset, size_t length,
1119                    char *encoding, char *cbid, void *cbuserdata)
1120 {
1121         int rv = 0;
1122         CitContext *CCC = MyContext();
1123
1124         /* Silently go away if there's already a download open. */
1125         if (CCC->download_fp != NULL)
1126                 return;
1127
1128         if (
1129                 (!IsEmptyStr(partnum) && (!strcasecmp(CCC->download_desired_section, partnum)))
1130         ||      (!IsEmptyStr(cbid) && (!strcasecmp(CCC->download_desired_section, cbid)))
1131         ) {
1132                 CCC->download_fp = tmpfile();
1133                 if (CCC->download_fp == NULL) {
1134                         MSG_syslog(LOG_EMERG, "mime_download(): Couldn't write: %s\n",
1135                                     strerror(errno));
1136                         cprintf("%d cannot open temporary file: %s\n",
1137                                 ERROR + INTERNAL_ERROR, strerror(errno));
1138                         return;
1139                 }
1140
1141                 rv = fwrite(content, length, 1, CC->download_fp);
1142                 if (rv <= 0) {
1143                         MSG_syslog(LOG_EMERG, "mime_download(): Couldn't write: %s\n",
1144                                    strerror(errno));
1145                         cprintf("%d unable to write tempfile.\n",
1146                                 ERROR + TOO_BIG);
1147                         fclose(CCC->download_fp);
1148                         CCC->download_fp = NULL;
1149                         return;
1150                 }
1151                 fflush(CCC->download_fp);
1152                 rewind(CCC->download_fp);
1153
1154                 OpenCmdResult(filename, cbtype);
1155         }
1156 }
1157
1158
1159
1160 /*
1161  * Callback function for mime parser that outputs a section all at once.
1162  * We can specify the desired section by part number *or* content-id.
1163  */
1164 void mime_spew_section(char *name, char *filename, char *partnum, char *disp,
1165                    void *content, char *cbtype, char *cbcharset, size_t length,
1166                    char *encoding, char *cbid, void *cbuserdata)
1167 {
1168         int *found_it = (int *)cbuserdata;
1169
1170         if (
1171                 (!IsEmptyStr(partnum) && (!strcasecmp(CC->download_desired_section, partnum)))
1172         ||      (!IsEmptyStr(cbid) && (!strcasecmp(CC->download_desired_section, cbid)))
1173         ) {
1174                 *found_it = 1;
1175                 cprintf("%d %d|-1|%s|%s|%s\n",
1176                         BINARY_FOLLOWS,
1177                         (int)length,
1178                         filename,
1179                         cbtype,
1180                         cbcharset
1181                 );
1182                 client_write(content, length);
1183         }
1184 }
1185
1186
1187 /*
1188  * Load a message from disk into memory.
1189  * This is used by CtdlOutputMsg() and other fetch functions.
1190  *
1191  * NOTE: Caller is responsible for freeing the returned CtdlMessage struct
1192  *       using the CtdlMessageFree() function.
1193  */
1194 struct CtdlMessage *CtdlFetchMessage(long msgnum, int with_body)
1195 {
1196         struct CitContext *CCC = CC;
1197         struct cdbdata *dmsgtext;
1198         struct CtdlMessage *ret = NULL;
1199         char *mptr;
1200         char *upper_bound;
1201         cit_uint8_t ch;
1202         cit_uint8_t field_header;
1203
1204         MSG_syslog(LOG_DEBUG, "CtdlFetchMessage(%ld, %d)\n", msgnum, with_body);
1205         dmsgtext = cdb_fetch(CDB_MSGMAIN, &msgnum, sizeof(long));
1206         if (dmsgtext == NULL) {
1207                 return NULL;
1208         }
1209         mptr = dmsgtext->ptr;
1210         upper_bound = mptr + dmsgtext->len;
1211
1212         /* Parse the three bytes that begin EVERY message on disk.
1213          * The first is always 0xFF, the on-disk magic number.
1214          * The second is the anonymous/public type byte.
1215          * The third is the format type byte (vari, fixed, or MIME).
1216          */
1217         ch = *mptr++;
1218         if (ch != 255) {
1219                 MSG_syslog(LOG_ERR, "Message %ld appears to be corrupted.\n", msgnum);
1220                 cdb_free(dmsgtext);
1221                 return NULL;
1222         }
1223         ret = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
1224         memset(ret, 0, sizeof(struct CtdlMessage));
1225
1226         ret->cm_magic = CTDLMESSAGE_MAGIC;
1227         ret->cm_anon_type = *mptr++;    /* Anon type byte */
1228         ret->cm_format_type = *mptr++;  /* Format type byte */
1229
1230         /*
1231          * The rest is zero or more arbitrary fields.  Load them in.
1232          * We're done when we encounter either a zero-length field or
1233          * have just processed the 'M' (message text) field.
1234          */
1235         do {
1236                 if (mptr >= upper_bound) {
1237                         break;
1238                 }
1239                 field_header = *mptr++;
1240                 ret->cm_fields[field_header] = strdup(mptr);
1241
1242                 while (*mptr++ != 0);   /* advance to next field */
1243
1244         } while ((mptr < upper_bound) && (field_header != 'M'));
1245
1246         cdb_free(dmsgtext);
1247
1248         /* Always make sure there's something in the msg text field.  If
1249          * it's NULL, the message text is most likely stored separately,
1250          * so go ahead and fetch that.  Failing that, just set a dummy
1251          * body so other code doesn't barf.
1252          */
1253         if ( (ret->cm_fields['M'] == NULL) && (with_body) ) {
1254                 dmsgtext = cdb_fetch(CDB_BIGMSGS, &msgnum, sizeof(long));
1255                 if (dmsgtext != NULL) {
1256                         ret->cm_fields['M'] = dmsgtext->ptr;
1257                         dmsgtext->ptr = NULL;
1258                         cdb_free(dmsgtext);
1259                 }
1260         }
1261         if (ret->cm_fields['M'] == NULL) {
1262                 ret->cm_fields['M'] = strdup("\r\n\r\n (no text)\r\n");
1263         }
1264
1265         /* Perform "before read" hooks (aborting if any return nonzero) */
1266         if (PerformMessageHooks(ret, EVT_BEFOREREAD) > 0) {
1267                 CtdlFreeMessage(ret);
1268                 return NULL;
1269         }
1270
1271         return (ret);
1272 }
1273
1274
1275 /*
1276  * Returns 1 if the supplied pointer points to a valid Citadel message.
1277  * If the pointer is NULL or the magic number check fails, returns 0.
1278  */
1279 int is_valid_message(struct CtdlMessage *msg) {
1280         if (msg == NULL)
1281                 return 0;
1282         if ((msg->cm_magic) != CTDLMESSAGE_MAGIC) {
1283                 struct CitContext *CCC = CC;
1284                 MSGM_syslog(LOG_WARNING, "is_valid_message() -- self-check failed\n");
1285                 return 0;
1286         }
1287         return 1;
1288 }
1289
1290 void CtdlFreeMessageContents(struct CtdlMessage *msg)
1291 {
1292         int i;
1293
1294         for (i = 0; i < 256; ++i)
1295                 if (msg->cm_fields[i] != NULL) {
1296                         free(msg->cm_fields[i]);
1297                 }
1298
1299         msg->cm_magic = 0;      /* just in case */
1300 }
1301 /*
1302  * 'Destructor' for struct CtdlMessage
1303  */
1304 void CtdlFreeMessage(struct CtdlMessage *msg)
1305 {
1306         if (is_valid_message(msg) == 0)
1307         {
1308                 if (msg != NULL) free (msg);
1309                 return;
1310         }
1311         CtdlFreeMessageContents(msg);
1312         free(msg);
1313 }
1314
1315 int DupCMField(int i, struct CtdlMessage *OrgMsg, struct CtdlMessage *NewMsg)
1316 {
1317         long len;
1318         len = strlen(OrgMsg->cm_fields[i]);
1319         NewMsg->cm_fields[i] = malloc(len + 1);
1320         if (NewMsg->cm_fields[i] == NULL)
1321                 return 0;
1322         memcpy(NewMsg->cm_fields[i], OrgMsg->cm_fields[i], len);
1323         return 1;
1324 }
1325
1326 struct CtdlMessage * CtdlDuplicateMessage(struct CtdlMessage *OrgMsg)
1327 {
1328         int i;
1329         struct CtdlMessage *NewMsg;
1330
1331         if (is_valid_message(OrgMsg) == 0)
1332                 return NULL;
1333         NewMsg = (struct CtdlMessage *)malloc(sizeof(struct CtdlMessage *));
1334         if (NewMsg == NULL)
1335                 return NULL;
1336
1337         memcpy(NewMsg, OrgMsg, sizeof(struct CtdlMessage *));
1338
1339         memset(NewMsg->cm_fields, 0, sizeof(NewMsg->cm_fields));
1340
1341         for (i = 0; i < 256; ++i)
1342         {
1343                 if (OrgMsg->cm_fields[i] != NULL)
1344                 {
1345                         if (!DupCMField(i, OrgMsg, NewMsg))
1346                         {
1347                                 CtdlFreeMessage(NewMsg);
1348                                 return NULL;
1349                         }
1350                 }
1351         }
1352
1353         return NewMsg;
1354 }
1355
1356
1357
1358 /*
1359  * Pre callback function for multipart/alternative
1360  *
1361  * NOTE: this differs from the standard behavior for a reason.  Normally when
1362  *       displaying multipart/alternative you want to show the _last_ usable
1363  *       format in the message.  Here we show the _first_ one, because it's
1364  *       usually text/plain.  Since this set of functions is designed for text
1365  *       output to non-MIME-aware clients, this is the desired behavior.
1366  *
1367  */
1368 void fixed_output_pre(char *name, char *filename, char *partnum, char *disp,
1369                 void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1370                 char *cbid, void *cbuserdata)
1371 {
1372         struct CitContext *CCC = CC;
1373         struct ma_info *ma;
1374
1375         ma = (struct ma_info *)cbuserdata;
1376         MSG_syslog(LOG_DEBUG, "fixed_output_pre() type=<%s>\n", cbtype);
1377         if (!strcasecmp(cbtype, "multipart/alternative")) {
1378                 ++ma->is_ma;
1379                 ma->did_print = 0;
1380         }
1381         if (!strcasecmp(cbtype, "message/rfc822")) {
1382                 ++ma->freeze;
1383         }
1384 }
1385
1386 /*
1387  * Post callback function for multipart/alternative
1388  */
1389 void fixed_output_post(char *name, char *filename, char *partnum, char *disp,
1390                 void *content, char *cbtype, char *cbcharset, size_t length,
1391                 char *encoding, char *cbid, void *cbuserdata)
1392 {
1393         struct CitContext *CCC = CC;
1394         struct ma_info *ma;
1395
1396         ma = (struct ma_info *)cbuserdata;
1397         MSG_syslog(LOG_DEBUG, "fixed_output_post() type=<%s>\n", cbtype);
1398         if (!strcasecmp(cbtype, "multipart/alternative")) {
1399                 --ma->is_ma;
1400                 ma->did_print = 0;
1401         }
1402         if (!strcasecmp(cbtype, "message/rfc822")) {
1403                 --ma->freeze;
1404         }
1405 }
1406
1407 /*
1408  * Inline callback function for mime parser that wants to display text
1409  */
1410 void fixed_output(char *name, char *filename, char *partnum, char *disp,
1411                 void *content, char *cbtype, char *cbcharset, size_t length,
1412                 char *encoding, char *cbid, void *cbuserdata)
1413 {
1414         struct CitContext *CCC = CC;
1415         char *ptr;
1416         char *wptr;
1417         size_t wlen;
1418         struct ma_info *ma;
1419
1420         ma = (struct ma_info *)cbuserdata;
1421
1422         MSG_syslog(LOG_DEBUG,
1423                 "fixed_output() part %s: %s (%s) (%ld bytes)\n",
1424                 partnum, filename, cbtype, (long)length);
1425
1426         /*
1427          * If we're in the middle of a multipart/alternative scope and
1428          * we've already printed another section, skip this one.
1429          */
1430         if ( (ma->is_ma) && (ma->did_print) ) {
1431                 MSG_syslog(LOG_DEBUG, "Skipping part %s (%s)\n", partnum, cbtype);
1432                 return;
1433         }
1434         ma->did_print = 1;
1435
1436         if ( (!strcasecmp(cbtype, "text/plain"))
1437            || (IsEmptyStr(cbtype)) ) {
1438                 wptr = content;
1439                 if (length > 0) {
1440                         client_write(wptr, length);
1441                         if (wptr[length-1] != '\n') {
1442                                 cprintf("\n");
1443                         }
1444                 }
1445                 return;
1446         }
1447
1448         if (!strcasecmp(cbtype, "text/html")) {
1449                 ptr = html_to_ascii(content, length, 80, 0);
1450                 wlen = strlen(ptr);
1451                 client_write(ptr, wlen);
1452                 if ((wlen > 0) && (ptr[wlen-1] != '\n')) {
1453                         cprintf("\n");
1454                 }
1455                 free(ptr);
1456                 return;
1457         }
1458
1459         if (ma->use_fo_hooks) {
1460                 if (PerformFixedOutputHooks(cbtype, content, length)) {
1461                 /* above function returns nonzero if it handled the part */
1462                         return;
1463                 }
1464         }
1465
1466         if (strncasecmp(cbtype, "multipart/", 10)) {
1467                 cprintf("Part %s: %s (%s) (%ld bytes)\r\n",
1468                         partnum, filename, cbtype, (long)length);
1469                 return;
1470         }
1471 }
1472
1473 /*
1474  * The client is elegant and sophisticated and wants to be choosy about
1475  * MIME content types, so figure out which multipart/alternative part
1476  * we're going to send.
1477  *
1478  * We use a system of weights.  When we find a part that matches one of the
1479  * MIME types we've declared as preferential, we can store it in ma->chosen_part
1480  * and then set ma->chosen_pref to that MIME type's position in our preference
1481  * list.  If we then hit another match, we only replace the first match if
1482  * the preference value is lower.
1483  */
1484 void choose_preferred(char *name, char *filename, char *partnum, char *disp,
1485                 void *content, char *cbtype, char *cbcharset, size_t length,
1486                 char *encoding, char *cbid, void *cbuserdata)
1487 {
1488         struct CitContext *CCC = CC;
1489         char buf[1024];
1490         int i;
1491         struct ma_info *ma;
1492
1493         ma = (struct ma_info *)cbuserdata;
1494
1495         // NOTE: REMOVING THIS CONDITIONAL FIXES BUG 220
1496         //       http://bugzilla.citadel.org/show_bug.cgi?id=220
1497         // I don't know if there are any side effects!  Please TEST TEST TEST
1498         //if (ma->is_ma > 0) {
1499
1500         for (i=0; i<num_tokens(CCC->preferred_formats, '|'); ++i) {
1501                 extract_token(buf, CCC->preferred_formats, i, '|', sizeof buf);
1502                 if ( (!strcasecmp(buf, cbtype)) && (!ma->freeze) ) {
1503                         if (i < ma->chosen_pref) {
1504                                 MSG_syslog(LOG_DEBUG, "Setting chosen part: <%s>\n", partnum);
1505                                 safestrncpy(ma->chosen_part, partnum, sizeof ma->chosen_part);
1506                                 ma->chosen_pref = i;
1507                         }
1508                 }
1509         }
1510 }
1511
1512 /*
1513  * Now that we've chosen our preferred part, output it.
1514  */
1515 void output_preferred(char *name,
1516                       char *filename,
1517                       char *partnum,
1518                       char *disp,
1519                       void *content,
1520                       char *cbtype,
1521                       char *cbcharset,
1522                       size_t length,
1523                       char *encoding,
1524                       char *cbid,
1525                       void *cbuserdata)
1526 {
1527         struct CitContext *CCC = CC;
1528         int i;
1529         char buf[128];
1530         int add_newline = 0;
1531         char *text_content;
1532         struct ma_info *ma;
1533         char *decoded = NULL;
1534         size_t bytes_decoded;
1535         int rc = 0;
1536
1537         ma = (struct ma_info *)cbuserdata;
1538
1539         /* This is not the MIME part you're looking for... */
1540         if (strcasecmp(partnum, ma->chosen_part)) return;
1541
1542         /* If the content-type of this part is in our preferred formats
1543          * list, we can simply output it verbatim.
1544          */
1545         for (i=0; i<num_tokens(CCC->preferred_formats, '|'); ++i) {
1546                 extract_token(buf, CCC->preferred_formats, i, '|', sizeof buf);
1547                 if (!strcasecmp(buf, cbtype)) {
1548                         /* Yeah!  Go!  W00t!! */
1549                         if (ma->dont_decode == 0)
1550                                 rc = mime_decode_now (content,
1551                                                       length,
1552                                                       encoding,
1553                                                       &decoded,
1554                                                       &bytes_decoded);
1555                         if (rc < 0)
1556                                 break; /* Give us the chance, maybe theres another one. */
1557
1558                         if (rc == 0) text_content = (char *)content;
1559                         else {
1560                                 text_content = decoded;
1561                                 length = bytes_decoded;
1562                         }
1563
1564                         if (text_content[length-1] != '\n') {
1565                                 ++add_newline;
1566                         }
1567                         cprintf("Content-type: %s", cbtype);
1568                         if (!IsEmptyStr(cbcharset)) {
1569                                 cprintf("; charset=%s", cbcharset);
1570                         }
1571                         cprintf("\nContent-length: %d\n",
1572                                 (int)(length + add_newline) );
1573                         if (!IsEmptyStr(encoding)) {
1574                                 cprintf("Content-transfer-encoding: %s\n", encoding);
1575                         }
1576                         else {
1577                                 cprintf("Content-transfer-encoding: 7bit\n");
1578                         }
1579                         cprintf("X-Citadel-MSG4-Partnum: %s\n", partnum);
1580                         cprintf("\n");
1581                         if (client_write(text_content, length) == -1)
1582                         {
1583                                 MSGM_syslog(LOG_ERR, "output_preferred(): aborting due to write failure.\n");
1584                                 return;
1585                         }
1586                         if (add_newline) cprintf("\n");
1587                         if (decoded != NULL) free(decoded);
1588                         return;
1589                 }
1590         }
1591
1592         /* No translations required or possible: output as text/plain */
1593         cprintf("Content-type: text/plain\n\n");
1594         rc = 0;
1595         if (ma->dont_decode == 0)
1596                 rc = mime_decode_now (content,
1597                                       length,
1598                                       encoding,
1599                                       &decoded,
1600                                       &bytes_decoded);
1601         if (rc < 0)
1602                 return; /* Give us the chance, maybe theres another one. */
1603
1604         if (rc == 0) text_content = (char *)content;
1605         else {
1606                 text_content = decoded;
1607                 length = bytes_decoded;
1608         }
1609
1610         fixed_output(name, filename, partnum, disp, text_content, cbtype, cbcharset,
1611                         length, encoding, cbid, cbuserdata);
1612         if (decoded != NULL) free(decoded);
1613 }
1614
1615
1616 struct encapmsg {
1617         char desired_section[64];
1618         char *msg;
1619         size_t msglen;
1620 };
1621
1622
1623 /*
1624  * Callback function for
1625  */
1626 void extract_encapsulated_message(char *name, char *filename, char *partnum, char *disp,
1627                    void *content, char *cbtype, char *cbcharset, size_t length,
1628                    char *encoding, char *cbid, void *cbuserdata)
1629 {
1630         struct encapmsg *encap;
1631
1632         encap = (struct encapmsg *)cbuserdata;
1633
1634         /* Only proceed if this is the desired section... */
1635         if (!strcasecmp(encap->desired_section, partnum)) {
1636                 encap->msglen = length;
1637                 encap->msg = malloc(length + 2);
1638                 memcpy(encap->msg, content, length);
1639                 return;
1640         }
1641 }
1642
1643
1644 /*
1645  * Determine whether the specified message exists in the cached_msglist
1646  * (This is a security check)
1647  */
1648 int check_cached_msglist(long msgnum) {
1649         struct CitContext *CCC = CC;
1650
1651         /* cases in which we skip the check */
1652         if (!CCC) return om_ok;                                         /* not a session */
1653         if (CCC->client_socket <= 0) return om_ok;                      /* not a client session */
1654         if (CCC->cached_msglist == NULL) return om_access_denied;       /* no msglist fetched */
1655         if (CCC->cached_num_msgs == 0) return om_access_denied;         /* nothing to check */
1656
1657
1658         /* Do a binary search within the cached_msglist for the requested msgnum */
1659         int min = 0;
1660         int max = (CC->cached_num_msgs - 1);
1661
1662         while (max >= min) {
1663                 int middle = min + (max-min) / 2 ;
1664                 if (msgnum == CCC->cached_msglist[middle]) {
1665                         return om_ok;
1666                 }
1667                 if (msgnum > CC->cached_msglist[middle]) {
1668                         min = middle + 1;
1669                 }
1670                 else {
1671                         max = middle - 1;
1672                 }
1673         }
1674
1675         return om_access_denied;
1676 }
1677
1678
1679 /*
1680  * Determine whether the currently logged in session has permission to read
1681  * messages in the current room.
1682  */
1683 int CtdlDoIHavePermissionToReadMessagesInThisRoom(void) {
1684         if (    (!(CC->logged_in))
1685                 && (!(CC->internal_pgm))
1686                 && (!config.c_guest_logins)
1687         ) {
1688                 return(om_not_logged_in);
1689         }
1690         return(om_ok);
1691 }
1692
1693
1694 /*
1695  * Get a message off disk.  (returns om_* values found in msgbase.h)
1696  *
1697  */
1698 int CtdlOutputMsg(long msg_num,         /* message number (local) to fetch */
1699                   int mode,             /* how would you like that message? */
1700                   int headers_only,     /* eschew the message body? */
1701                   int do_proto,         /* do Citadel protocol responses? */
1702                   int crlf,             /* Use CRLF newlines instead of LF? */
1703                   char *section,        /* NULL or a message/rfc822 section */
1704                   int flags,            /* various flags; see msgbase.h */
1705                   char **Author,
1706                   char **Address
1707 ) {
1708         struct CitContext *CCC = CC;
1709         struct CtdlMessage *TheMessage = NULL;
1710         int retcode = CIT_OK;
1711         struct encapmsg encap;
1712         int r;
1713
1714         MSG_syslog(LOG_DEBUG, "CtdlOutputMsg(msgnum=%ld, mode=%d, section=%s)\n",
1715                 msg_num, mode,
1716                 (section ? section : "<>")
1717         );
1718
1719         r = CtdlDoIHavePermissionToReadMessagesInThisRoom();
1720         if (r != om_ok) {
1721                 if (do_proto) {
1722                         if (r == om_not_logged_in) {
1723                                 cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN);
1724                         }
1725                         else {
1726                                 cprintf("%d An unknown error has occurred.\n", ERROR);
1727                         }
1728                 }
1729                 return(r);
1730         }
1731
1732         /*
1733          * Check to make sure the message is actually IN this room
1734          */
1735         r = check_cached_msglist(msg_num);
1736         if (r == om_access_denied) {
1737                 /* Not in the cache?  We get ONE shot to check it again. */
1738                 CtdlForEachMessage(MSGS_ALL, 0L, NULL, NULL, NULL, NULL, NULL);
1739                 r = check_cached_msglist(msg_num);
1740         }
1741         if (r != om_ok) {
1742                 MSG_syslog(LOG_DEBUG, "Security check fail: message %ld is not in %s\n",
1743                            msg_num, CCC->room.QRname
1744                 );
1745                 if (do_proto) {
1746                         if (r == om_access_denied) {
1747                                 cprintf("%d message %ld was not found in this room\n",
1748                                         ERROR + HIGHER_ACCESS_REQUIRED,
1749                                         msg_num
1750                                 );
1751                         }
1752                 }
1753                 return(r);
1754         }
1755
1756         /*
1757          * Fetch the message from disk.  If we're in HEADERS_FAST mode,
1758          * request that we don't even bother loading the body into memory.
1759          */
1760         if (headers_only == HEADERS_FAST) {
1761                 TheMessage = CtdlFetchMessage(msg_num, 0);
1762         }
1763         else {
1764                 TheMessage = CtdlFetchMessage(msg_num, 1);
1765         }
1766
1767         if (TheMessage == NULL) {
1768                 if (do_proto) cprintf("%d Can't locate msg %ld on disk\n",
1769                         ERROR + MESSAGE_NOT_FOUND, msg_num);
1770                 return(om_no_such_msg);
1771         }
1772
1773         /* Here is the weird form of this command, to process only an
1774          * encapsulated message/rfc822 section.
1775          */
1776         if (section) if (!IsEmptyStr(section)) if (strcmp(section, "0")) {
1777                 memset(&encap, 0, sizeof encap);
1778                 safestrncpy(encap.desired_section, section, sizeof encap.desired_section);
1779                 mime_parser(TheMessage->cm_fields['M'],
1780                         NULL,
1781                         *extract_encapsulated_message,
1782                         NULL, NULL, (void *)&encap, 0
1783                 );
1784
1785                 if ((Author != NULL) && (*Author == NULL))
1786                 {
1787                         *Author = TheMessage->cm_fields['A'];
1788                         TheMessage->cm_fields['A'] = NULL;
1789                 }
1790                 if ((Address != NULL) && (*Address == NULL))
1791                 {
1792                         *Address = TheMessage->cm_fields['F'];
1793                         TheMessage->cm_fields['F'] = NULL;
1794                 }
1795                 CtdlFreeMessage(TheMessage);
1796                 TheMessage = NULL;
1797
1798                 if (encap.msg) {
1799                         encap.msg[encap.msglen] = 0;
1800                         TheMessage = convert_internet_message(encap.msg);
1801                         encap.msg = NULL;       /* no free() here, TheMessage owns it now */
1802
1803                         /* Now we let it fall through to the bottom of this
1804                          * function, because TheMessage now contains the
1805                          * encapsulated message instead of the top-level
1806                          * message.  Isn't that neat?
1807                          */
1808
1809                 }
1810                 else {
1811                         if (do_proto) {
1812                                 cprintf("%d msg %ld has no part %s\n",
1813                                         ERROR + MESSAGE_NOT_FOUND,
1814                                         msg_num,
1815                                         section);
1816                         }
1817                         retcode = om_no_such_msg;
1818                 }
1819
1820         }
1821
1822         /* Ok, output the message now */
1823         if (retcode == CIT_OK)
1824                 retcode = CtdlOutputPreLoadedMsg(TheMessage, mode, headers_only, do_proto, crlf, flags);
1825         if ((Author != NULL) && (*Author == NULL))
1826         {
1827                 *Author = TheMessage->cm_fields['A'];
1828                 TheMessage->cm_fields['A'] = NULL;
1829         }
1830         if ((Address != NULL) && (*Address == NULL))
1831         {
1832                 *Address = TheMessage->cm_fields['F'];
1833                 TheMessage->cm_fields['F'] = NULL;
1834         }
1835
1836         CtdlFreeMessage(TheMessage);
1837
1838         return(retcode);
1839 }
1840
1841
1842 char *qp_encode_email_addrs(char *source)
1843 {
1844         struct CitContext *CCC = CC;
1845         char *user, *node, *name;
1846         const char headerStr[] = "=?UTF-8?Q?";
1847         char *Encoded;
1848         char *EncodedName;
1849         char *nPtr;
1850         int need_to_encode = 0;
1851         long SourceLen;
1852         long EncodedMaxLen;
1853         long nColons = 0;
1854         long *AddrPtr;
1855         long *AddrUtf8;
1856         long nAddrPtrMax = 50;
1857         long nmax;
1858         int InQuotes = 0;
1859         int i, n;
1860
1861         if (source == NULL) return source;
1862         if (IsEmptyStr(source)) return source;
1863         if (MessageDebugEnabled != 0) cit_backtrace();
1864         MSG_syslog(LOG_DEBUG, "qp_encode_email_addrs: [%s]\n", source);
1865
1866         AddrPtr = malloc (sizeof (long) * nAddrPtrMax);
1867         AddrUtf8 = malloc (sizeof (long) * nAddrPtrMax);
1868         memset(AddrUtf8, 0, sizeof (long) * nAddrPtrMax);
1869         *AddrPtr = 0;
1870         i = 0;
1871         while (!IsEmptyStr (&source[i])) {
1872                 if (nColons >= nAddrPtrMax){
1873                         long *ptr;
1874
1875                         ptr = (long *) malloc(sizeof (long) * nAddrPtrMax * 2);
1876                         memcpy (ptr, AddrPtr, sizeof (long) * nAddrPtrMax);
1877                         free (AddrPtr), AddrPtr = ptr;
1878
1879                         ptr = (long *) malloc(sizeof (long) * nAddrPtrMax * 2);
1880                         memset(&ptr[nAddrPtrMax], 0,
1881                                sizeof (long) * nAddrPtrMax);
1882
1883                         memcpy (ptr, AddrUtf8, sizeof (long) * nAddrPtrMax);
1884                         free (AddrUtf8), AddrUtf8 = ptr;
1885                         nAddrPtrMax *= 2;
1886                 }
1887                 if (((unsigned char) source[i] < 32) ||
1888                     ((unsigned char) source[i] > 126)) {
1889                         need_to_encode = 1;
1890                         AddrUtf8[nColons] = 1;
1891                 }
1892                 if (source[i] == '"')
1893                         InQuotes = !InQuotes;
1894                 if (!InQuotes && source[i] == ',') {
1895                         AddrPtr[nColons] = i;
1896                         nColons++;
1897                 }
1898                 i++;
1899         }
1900         if (need_to_encode == 0) {
1901                 free(AddrPtr);
1902                 free(AddrUtf8);
1903                 return source;
1904         }
1905
1906         SourceLen = i;
1907         EncodedMaxLen = nColons * (sizeof(headerStr) + 3) + SourceLen * 3;
1908         Encoded = (char*) malloc (EncodedMaxLen);
1909
1910         for (i = 0; i < nColons; i++)
1911                 source[AddrPtr[i]++] = '\0';
1912         /* TODO: if libidn, this might get larger*/
1913         user = malloc(SourceLen + 1);
1914         node = malloc(SourceLen + 1);
1915         name = malloc(SourceLen + 1);
1916
1917         nPtr = Encoded;
1918         *nPtr = '\0';
1919         for (i = 0; i < nColons && nPtr != NULL; i++) {
1920                 nmax = EncodedMaxLen - (nPtr - Encoded);
1921                 if (AddrUtf8[i]) {
1922                         process_rfc822_addr(&source[AddrPtr[i]],
1923                                             user,
1924                                             node,
1925                                             name);
1926                         /* TODO: libIDN here ! */
1927                         if (IsEmptyStr(name)) {
1928                                 n = snprintf(nPtr, nmax,
1929                                              (i==0)?"%s@%s" : ",%s@%s",
1930                                              user, node);
1931                         }
1932                         else {
1933                                 EncodedName = rfc2047encode(name, strlen(name));
1934                                 n = snprintf(nPtr, nmax,
1935                                              (i==0)?"%s <%s@%s>" : ",%s <%s@%s>",
1936                                              EncodedName, user, node);
1937                                 free(EncodedName);
1938                         }
1939                 }
1940                 else {
1941                         n = snprintf(nPtr, nmax,
1942                                      (i==0)?"%s" : ",%s",
1943                                      &source[AddrPtr[i]]);
1944                 }
1945                 if (n > 0 )
1946                         nPtr += n;
1947                 else {
1948                         char *ptr, *nnPtr;
1949                         ptr = (char*) malloc(EncodedMaxLen * 2);
1950                         memcpy(ptr, Encoded, EncodedMaxLen);
1951                         nnPtr = ptr + (nPtr - Encoded), nPtr = nnPtr;
1952                         free(Encoded), Encoded = ptr;
1953                         EncodedMaxLen *= 2;
1954                         i--; /* do it once more with properly lengthened buffer */
1955                 }
1956         }
1957         for (i = 0; i < nColons; i++)
1958                 source[--AddrPtr[i]] = ',';
1959
1960         free(user);
1961         free(node);
1962         free(name);
1963         free(AddrUtf8);
1964         free(AddrPtr);
1965         return Encoded;
1966 }
1967
1968
1969 /* If the last item in a list of recipients was truncated to a partial address,
1970  * remove it completely in order to avoid choking libSieve
1971  */
1972 void sanitize_truncated_recipient(char *str)
1973 {
1974         if (!str) return;
1975         if (num_tokens(str, ',') < 2) return;
1976
1977         int len = strlen(str);
1978         if (len < 900) return;
1979         if (len > 998) str[998] = 0;
1980
1981         char *cptr = strrchr(str, ',');
1982         if (!cptr) return;
1983
1984         char *lptr = strchr(cptr, '<');
1985         char *rptr = strchr(cptr, '>');
1986
1987         if ( (lptr) && (rptr) && (rptr > lptr) ) return;
1988
1989         *cptr = 0;
1990 }
1991
1992
1993 void OutputCtdlMsgHeaders(
1994         struct CtdlMessage *TheMessage,
1995         int do_proto)           /* do Citadel protocol responses? */
1996 {
1997         char allkeys[30];
1998         int i, k, n;
1999         int suppress_f = 0;
2000         char buf[SIZ];
2001         char display_name[256];
2002
2003         /* begin header processing loop for Citadel message format */
2004         safestrncpy(display_name, "<unknown>", sizeof display_name);
2005         if (TheMessage->cm_fields['A']) {
2006                 strcpy(buf, TheMessage->cm_fields['A']);
2007                 if (TheMessage->cm_anon_type == MES_ANONONLY) {
2008                         safestrncpy(display_name, "****", sizeof display_name);
2009                 }
2010                 else if (TheMessage->cm_anon_type == MES_ANONOPT) {
2011                         safestrncpy(display_name, "anonymous", sizeof display_name);
2012                 }
2013                 else {
2014                         safestrncpy(display_name, buf, sizeof display_name);
2015                 }
2016                 if ((is_room_aide())
2017                     && ((TheMessage->cm_anon_type == MES_ANONONLY)
2018                         || (TheMessage->cm_anon_type == MES_ANONOPT))) {
2019                         size_t tmp = strlen(display_name);
2020                         snprintf(&display_name[tmp],
2021                                  sizeof display_name - tmp,
2022                                  " [%s]", buf);
2023                 }
2024         }
2025
2026         /* Don't show Internet address for users on the
2027          * local Citadel network.
2028          */
2029         suppress_f = 0;
2030         if (TheMessage->cm_fields['N'] != NULL)
2031                 if (!IsEmptyStr(TheMessage->cm_fields['N']))
2032                         if (haschar(TheMessage->cm_fields['N'], '.') == 0) {
2033                                 suppress_f = 1;
2034                         }
2035
2036         /* Now spew the header fields in the order we like them. */
2037         n = safestrncpy(allkeys, FORDER, sizeof allkeys);
2038         for (i=0; i<n; ++i) {
2039                 k = (int) allkeys[i];
2040                 if (k != 'M') {
2041                         if ( (TheMessage->cm_fields[k] != NULL)
2042                              && (msgkeys[k] != NULL) ) {
2043                                 if ((k == 'V') || (k == 'R') || (k == 'Y')) {
2044                                         sanitize_truncated_recipient(TheMessage->cm_fields[k]);
2045                                 }
2046                                 if (k == 'A') {
2047                                         if (do_proto) cprintf("%s=%s\n",
2048                                                               msgkeys[k],
2049                                                               display_name);
2050                                 }
2051                                 else if ((k == 'F') && (suppress_f)) {
2052                                         /* do nothing */
2053                                 }
2054                                 /* Masquerade display name if needed */
2055                                 else {
2056                                         if (do_proto) cprintf("%s=%s\n",
2057                                                               msgkeys[k],
2058                                                               TheMessage->cm_fields[k]
2059                                                 );
2060                                 }
2061                         }
2062                 }
2063         }
2064
2065 }
2066
2067 void OutputRFC822MsgHeaders(
2068         struct CtdlMessage *TheMessage,
2069         int flags,              /* should the bessage be exported clean */
2070         const char *nl,
2071         char *mid, long sizeof_mid,
2072         char *suser, long sizeof_suser,
2073         char *luser, long sizeof_luser,
2074         char *fuser, long sizeof_fuser,
2075         char *snode, long sizeof_snode)
2076 {
2077         char datestamp[100];
2078         int subject_found = 0;
2079         char buf[SIZ];
2080         int i, j, k;
2081         char *mptr = NULL;
2082         char *mpptr = NULL;
2083         char *hptr;
2084
2085         for (i = 0; i < 256; ++i) {
2086                 if (TheMessage->cm_fields[i]) {
2087                         mptr = mpptr = TheMessage->cm_fields[i];
2088
2089                         if (i == 'A') {
2090                                 safestrncpy(luser, mptr, sizeof_luser);
2091                                 safestrncpy(suser, mptr, sizeof_suser);
2092                         }
2093                         else if (i == 'Y') {
2094                                 if ((flags & QP_EADDR) != 0) {
2095                                         mptr = qp_encode_email_addrs(mptr);
2096                                 }
2097                                 sanitize_truncated_recipient(mptr);
2098                                 cprintf("CC: %s%s", mptr, nl);
2099                         }
2100                         else if (i == 'P') {
2101                                 cprintf("Return-Path: %s%s", mptr, nl);
2102                         }
2103                         else if (i == 'L') {
2104                                 cprintf("List-ID: %s%s", mptr, nl);
2105                         }
2106                         else if (i == 'V') {
2107                                 if ((flags & QP_EADDR) != 0)
2108                                         mptr = qp_encode_email_addrs(mptr);
2109                                 hptr = mptr;
2110                                 while ((*hptr != '\0') && isspace(*hptr))
2111                                         hptr ++;
2112                                 if (!IsEmptyStr(hptr))
2113                                         cprintf("Envelope-To: %s%s", hptr, nl);
2114                         }
2115                         else if (i == 'U') {
2116                                 cprintf("Subject: %s%s", mptr, nl);
2117                                 subject_found = 1;
2118                         }
2119                         else if (i == 'I')
2120                                 safestrncpy(mid, mptr, sizeof_mid); /// TODO: detect @ here and copy @nodename in if not found.
2121                         else if (i == 'F')
2122                                 safestrncpy(fuser, mptr, sizeof_fuser);
2123                         /* else if (i == 'O')
2124                            cprintf("X-Citadel-Room: %s%s",
2125                            mptr, nl); */
2126                         else if (i == 'N')
2127                                 safestrncpy(snode, mptr, sizeof_snode);
2128                         else if (i == 'R')
2129                         {
2130                                 if (haschar(mptr, '@') == 0)
2131                                 {
2132                                         sanitize_truncated_recipient(mptr);
2133                                         cprintf("To: %s@%s", mptr, config.c_fqdn);
2134                                         cprintf("%s", nl);
2135                                 }
2136                                 else
2137                                 {
2138                                         if ((flags & QP_EADDR) != 0) {
2139                                                 mptr = qp_encode_email_addrs(mptr);
2140                                         }
2141                                         sanitize_truncated_recipient(mptr);
2142                                         cprintf("To: %s", mptr);
2143                                         cprintf("%s", nl);
2144                                 }
2145                         }
2146                         else if (i == 'T') {
2147                                 datestring(datestamp, sizeof datestamp,
2148                                            atol(mptr), DATESTRING_RFC822);
2149                                 cprintf("Date: %s%s", datestamp, nl);
2150                         }
2151                         else if (i == 'W') {
2152                                 cprintf("References: ");
2153                                 k = num_tokens(mptr, '|');
2154                                 for (j=0; j<k; ++j) {
2155                                         extract_token(buf, mptr, j, '|', sizeof buf);
2156                                         cprintf("<%s>", buf);
2157                                         if (j == (k-1)) {
2158                                                 cprintf("%s", nl);
2159                                         }
2160                                         else {
2161                                                 cprintf(" ");
2162                                         }
2163                                 }
2164                         }
2165                         else if (i == 'K') {
2166                                 hptr = mptr;
2167                                 while ((*hptr != '\0') && isspace(*hptr))
2168                                         hptr ++;
2169                                 if (!IsEmptyStr(hptr))
2170                                         cprintf("Reply-To: %s%s", mptr, nl);
2171                         }
2172                         if (mptr != mpptr)
2173                                 free (mptr);
2174                 }
2175         }
2176         if (subject_found == 0) {
2177                 cprintf("Subject: (no subject)%s", nl);
2178         }
2179 }
2180
2181
2182 void Dump_RFC822HeadersBody(
2183         struct CtdlMessage *TheMessage,
2184         int headers_only,       /* eschew the message body? */
2185         int flags,              /* should the bessage be exported clean? */
2186
2187         const char *nl)
2188 {
2189         cit_uint8_t prev_ch;
2190         int eoh = 0;
2191         const char *StartOfText = StrBufNOTNULL;
2192         char outbuf[1024];
2193         int outlen = 0;
2194         int nllen = strlen(nl);
2195         char *mptr;
2196
2197         mptr = TheMessage->cm_fields['M'];
2198
2199
2200         prev_ch = '\0';
2201         while (*mptr != '\0') {
2202                 if (*mptr == '\r') {
2203                         /* do nothing */
2204                 }
2205                 else {
2206                         if ((!eoh) &&
2207                             (*mptr == '\n'))
2208                         {
2209                                 eoh = (*(mptr+1) == '\r') && (*(mptr+2) == '\n');
2210                                 if (!eoh)
2211                                         eoh = *(mptr+1) == '\n';
2212                                 if (eoh)
2213                                 {
2214                                         StartOfText = mptr;
2215                                         StartOfText = strchr(StartOfText, '\n');
2216                                         StartOfText = strchr(StartOfText, '\n');
2217                                 }
2218                         }
2219                         if (((headers_only == HEADERS_NONE) && (mptr >= StartOfText)) ||
2220                             ((headers_only == HEADERS_ONLY) && (mptr < StartOfText)) ||
2221                             ((headers_only != HEADERS_NONE) &&
2222                              (headers_only != HEADERS_ONLY))
2223                                 ) {
2224                                 if (*mptr == '\n') {
2225                                         memcpy(&outbuf[outlen], nl, nllen);
2226                                         outlen += nllen;
2227                                         outbuf[outlen] = '\0';
2228                                 }
2229                                 else {
2230                                         outbuf[outlen++] = *mptr;
2231                                 }
2232                         }
2233                 }
2234                 if (flags & ESC_DOT)
2235                 {
2236                         if ((prev_ch == '\n') &&
2237                             (*mptr == '.') &&
2238                             ((*(mptr+1) == '\r') || (*(mptr+1) == '\n')))
2239                         {
2240                                 outbuf[outlen++] = '.';
2241                         }
2242                         prev_ch = *mptr;
2243                 }
2244                 ++mptr;
2245                 if (outlen > 1000) {
2246                         if (client_write(outbuf, outlen) == -1)
2247                         {
2248                                 struct CitContext *CCC = CC;
2249                                 MSGM_syslog(LOG_ERR, "Dump_RFC822HeadersBody(): aborting due to write failure.\n");
2250                                 return;
2251                         }
2252                         outlen = 0;
2253                 }
2254         }
2255         if (outlen > 0) {
2256                 client_write(outbuf, outlen);
2257         }
2258 }
2259
2260
2261
2262 /* If the format type on disk is 1 (fixed-format), then we want
2263  * everything to be output completely literally ... regardless of
2264  * what message transfer format is in use.
2265  */
2266 void DumpFormatFixed(
2267         struct CtdlMessage *TheMessage,
2268         int mode,               /* how would you like that message? */
2269         const char *nl)
2270 {
2271         cit_uint8_t ch;
2272         char buf[SIZ];
2273         int buflen;
2274         int xlline = 0;
2275         int nllen = strlen (nl);
2276         char *mptr;
2277
2278         mptr = TheMessage->cm_fields['M'];
2279
2280         if (mode == MT_MIME) {
2281                 cprintf("Content-type: text/plain\n\n");
2282         }
2283         *buf = '\0';
2284         buflen = 0;
2285         while (ch = *mptr++, ch > 0) {
2286                 if (ch == '\n')
2287                         ch = '\r';
2288
2289                 if ((buflen > 250) && (!xlline)){
2290                         int tbuflen;
2291                         tbuflen = buflen;
2292
2293                         while ((buflen > 0) &&
2294                                (!isspace(buf[buflen])))
2295                                 buflen --;
2296                         if (buflen == 0) {
2297                                 xlline = 1;
2298                         }
2299                         else {
2300                                 mptr -= tbuflen - buflen;
2301                                 buf[buflen] = '\0';
2302                                 ch = '\r';
2303                         }
2304                 }
2305                 /* if we reach the outer bounds of our buffer,
2306                    abort without respect what whe purge. */
2307                 if (xlline &&
2308                     ((isspace(ch)) ||
2309                      (buflen > SIZ - nllen - 2)))
2310                         ch = '\r';
2311
2312                 if (ch == '\r') {
2313                         memcpy (&buf[buflen], nl, nllen);
2314                         buflen += nllen;
2315                         buf[buflen] = '\0';
2316
2317                         if (client_write(buf, buflen) == -1)
2318                         {
2319                                 struct CitContext *CCC = CC;
2320                                 MSGM_syslog(LOG_ERR, "DumpFormatFixed(): aborting due to write failure.\n");
2321                                 return;
2322                         }
2323                         *buf = '\0';
2324                         buflen = 0;
2325                         xlline = 0;
2326                 } else {
2327                         buf[buflen] = ch;
2328                         buflen++;
2329                 }
2330         }
2331         buf[buflen] = '\0';
2332         if (!IsEmptyStr(buf))
2333                 cprintf("%s%s", buf, nl);
2334 }
2335
2336 /*
2337  * Get a message off disk.  (returns om_* values found in msgbase.h)
2338  */
2339 int CtdlOutputPreLoadedMsg(
2340                 struct CtdlMessage *TheMessage,
2341                 int mode,               /* how would you like that message? */
2342                 int headers_only,       /* eschew the message body? */
2343                 int do_proto,           /* do Citadel protocol responses? */
2344                 int crlf,               /* Use CRLF newlines instead of LF? */
2345                 int flags               /* should the bessage be exported clean? */
2346 ) {
2347         struct CitContext *CCC = CC;
2348         int i;
2349         char *mptr = NULL;
2350         const char *nl; /* newline string */
2351         struct ma_info ma;
2352
2353         /* Buffers needed for RFC822 translation.  These are all filled
2354          * using functions that are bounds-checked, and therefore we can
2355          * make them substantially smaller than SIZ.
2356          */
2357         char suser[100];
2358         char luser[100];
2359         char fuser[100];
2360         char snode[100];
2361         char mid[100];
2362
2363         MSG_syslog(LOG_DEBUG, "CtdlOutputPreLoadedMsg(TheMessage=%s, %d, %d, %d, %d\n",
2364                    ((TheMessage == NULL) ? "NULL" : "not null"),
2365                    mode, headers_only, do_proto, crlf);
2366
2367         strcpy(mid, "unknown");
2368         nl = (crlf ? "\r\n" : "\n");
2369
2370         if (!is_valid_message(TheMessage)) {
2371                 MSGM_syslog(LOG_ERR,
2372                             "ERROR: invalid preloaded message for output\n");
2373                 cit_backtrace ();
2374                 return(om_no_such_msg);
2375         }
2376
2377         /* Suppress envelope recipients if required to avoid disclosing BCC addresses.
2378          * Pad it with spaces in order to avoid changing the RFC822 length of the message.
2379          */
2380         if ( (flags & SUPPRESS_ENV_TO) && (TheMessage->cm_fields['V'] != NULL) ) {
2381                 memset(TheMessage->cm_fields['V'], ' ', strlen(TheMessage->cm_fields['V']));
2382         }
2383
2384         /* Are we downloading a MIME component? */
2385         if (mode == MT_DOWNLOAD) {
2386                 if (TheMessage->cm_format_type != FMT_RFC822) {
2387                         if (do_proto)
2388                                 cprintf("%d This is not a MIME message.\n",
2389                                 ERROR + ILLEGAL_VALUE);
2390                 } else if (CCC->download_fp != NULL) {
2391                         if (do_proto) cprintf(
2392                                 "%d You already have a download open.\n",
2393                                 ERROR + RESOURCE_BUSY);
2394                 } else {
2395                         /* Parse the message text component */
2396                         mptr = TheMessage->cm_fields['M'];
2397                         mime_parser(mptr, NULL, *mime_download, NULL, NULL, NULL, 0);
2398                         /* If there's no file open by this time, the requested
2399                          * section wasn't found, so print an error
2400                          */
2401                         if (CCC->download_fp == NULL) {
2402                                 if (do_proto) cprintf(
2403                                         "%d Section %s not found.\n",
2404                                         ERROR + FILE_NOT_FOUND,
2405                                         CCC->download_desired_section);
2406                         }
2407                 }
2408                 return((CCC->download_fp != NULL) ? om_ok : om_mime_error);
2409         }
2410
2411         /* MT_SPEW_SECTION is like MT_DOWNLOAD except it outputs the whole MIME part
2412          * in a single server operation instead of opening a download file.
2413          */
2414         if (mode == MT_SPEW_SECTION) {
2415                 if (TheMessage->cm_format_type != FMT_RFC822) {
2416                         if (do_proto)
2417                                 cprintf("%d This is not a MIME message.\n",
2418                                 ERROR + ILLEGAL_VALUE);
2419                 } else {
2420                         /* Parse the message text component */
2421                         int found_it = 0;
2422
2423                         mptr = TheMessage->cm_fields['M'];
2424                         mime_parser(mptr, NULL, *mime_spew_section, NULL, NULL, (void *)&found_it, 0);
2425                         /* If section wasn't found, print an error
2426                          */
2427                         if (!found_it) {
2428                                 if (do_proto) cprintf(
2429                                         "%d Section %s not found.\n",
2430                                         ERROR + FILE_NOT_FOUND,
2431                                         CCC->download_desired_section);
2432                         }
2433                 }
2434                 return((CCC->download_fp != NULL) ? om_ok : om_mime_error);
2435         }
2436
2437         /* now for the user-mode message reading loops */
2438         if (do_proto) cprintf("%d msg:\n", LISTING_FOLLOWS);
2439
2440         /* Does the caller want to skip the headers? */
2441         if (headers_only == HEADERS_NONE) goto START_TEXT;
2442
2443         /* Tell the client which format type we're using. */
2444         if ( (mode == MT_CITADEL) && (do_proto) ) {
2445                 cprintf("type=%d\n", TheMessage->cm_format_type);
2446         }
2447
2448         /* nhdr=yes means that we're only displaying headers, no body */
2449         if ( (TheMessage->cm_anon_type == MES_ANONONLY)
2450            && ((mode == MT_CITADEL) || (mode == MT_MIME))
2451            && (do_proto)
2452            ) {
2453                 cprintf("nhdr=yes\n");
2454         }
2455
2456         if ((mode == MT_CITADEL) || (mode == MT_MIME))
2457                 OutputCtdlMsgHeaders(TheMessage, do_proto);
2458
2459
2460         /* begin header processing loop for RFC822 transfer format */
2461         strcpy(suser, "");
2462         strcpy(luser, "");
2463         strcpy(fuser, "");
2464         strcpy(snode, NODENAME);
2465         if (mode == MT_RFC822)
2466                 OutputRFC822MsgHeaders(
2467                         TheMessage,
2468                         flags,
2469                         nl,
2470                         mid, sizeof(mid),
2471                         suser, sizeof(suser),
2472                         luser, sizeof(luser),
2473                         fuser, sizeof(fuser),
2474                         snode, sizeof(snode)
2475                         );
2476
2477
2478         for (i=0; !IsEmptyStr(&suser[i]); ++i) {
2479                 suser[i] = tolower(suser[i]);
2480                 if (!isalnum(suser[i])) suser[i]='_';
2481         }
2482
2483         if (mode == MT_RFC822) {
2484                 if (!strcasecmp(snode, NODENAME)) {
2485                         safestrncpy(snode, FQDN, sizeof snode);
2486                 }
2487
2488                 /* Construct a fun message id */
2489                 cprintf("Message-ID: <%s", mid);/// todo: this possibly breaks threadding mails.
2490                 if (strchr(mid, '@')==NULL) {
2491                         cprintf("@%s", snode);
2492                 }
2493                 cprintf(">%s", nl);
2494
2495                 if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONONLY)) {
2496                         cprintf("From: \"----\" <x@x.org>%s", nl);
2497                 }
2498                 else if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONOPT)) {
2499                         cprintf("From: \"anonymous\" <x@x.org>%s", nl);
2500                 }
2501                 else if (!IsEmptyStr(fuser)) {
2502                         cprintf("From: \"%s\" <%s>%s", luser, fuser, nl);
2503                 }
2504                 else {
2505                         cprintf("From: \"%s\" <%s@%s>%s", luser, suser, snode, nl);
2506                 }
2507
2508                 /* Blank line signifying RFC822 end-of-headers */
2509                 if (TheMessage->cm_format_type != FMT_RFC822) {
2510                         cprintf("%s", nl);
2511                 }
2512         }
2513
2514         /* end header processing loop ... at this point, we're in the text */
2515 START_TEXT:
2516         if (headers_only == HEADERS_FAST) goto DONE;
2517
2518         /* Tell the client about the MIME parts in this message */
2519         if (TheMessage->cm_format_type == FMT_RFC822) {
2520                 if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
2521                         mptr = TheMessage->cm_fields['M'];
2522                         memset(&ma, 0, sizeof(struct ma_info));
2523                         mime_parser(mptr, NULL,
2524                                 (do_proto ? *list_this_part : NULL),
2525                                 (do_proto ? *list_this_pref : NULL),
2526                                 (do_proto ? *list_this_suff : NULL),
2527                                 (void *)&ma, 1);
2528                 }
2529                 else if (mode == MT_RFC822) {   /* unparsed RFC822 dump */
2530                         Dump_RFC822HeadersBody(
2531                                 TheMessage,
2532                                 headers_only,
2533                                 flags,
2534                                 nl);
2535                         goto DONE;
2536                 }
2537         }
2538
2539         if (headers_only == HEADERS_ONLY) {
2540                 goto DONE;
2541         }
2542
2543         /* signify start of msg text */
2544         if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
2545                 if (do_proto) cprintf("text\n");
2546         }
2547
2548         if (TheMessage->cm_format_type == FMT_FIXED)
2549                 DumpFormatFixed(
2550                         TheMessage,
2551                         mode,           /* how would you like that message? */
2552                         nl);
2553
2554         /* If the message on disk is format 0 (Citadel vari-format), we
2555          * output using the formatter at 80 columns.  This is the final output
2556          * form if the transfer format is RFC822, but if the transfer format
2557          * is Citadel proprietary, it'll still work, because the indentation
2558          * for new paragraphs is correct and the client will reformat the
2559          * message to the reader's screen width.
2560          */
2561         if (TheMessage->cm_format_type == FMT_CITADEL) {
2562                 mptr = TheMessage->cm_fields['M'];
2563
2564                 if (mode == MT_MIME) {
2565                         cprintf("Content-type: text/x-citadel-variformat\n\n");
2566                 }
2567                 memfmout(mptr, nl);
2568         }
2569
2570         /* If the message on disk is format 4 (MIME), we've gotta hand it
2571          * off to the MIME parser.  The client has already been told that
2572          * this message is format 1 (fixed format), so the callback function
2573          * we use will display those parts as-is.
2574          */
2575         if (TheMessage->cm_format_type == FMT_RFC822) {
2576                 memset(&ma, 0, sizeof(struct ma_info));
2577
2578                 if (mode == MT_MIME) {
2579                         ma.use_fo_hooks = 0;
2580                         strcpy(ma.chosen_part, "1");
2581                         ma.chosen_pref = 9999;
2582                         ma.dont_decode = CCC->msg4_dont_decode;
2583                         mime_parser(mptr, NULL,
2584                                 *choose_preferred, *fixed_output_pre,
2585                                 *fixed_output_post, (void *)&ma, 1);
2586                         mime_parser(mptr, NULL,
2587                                 *output_preferred, NULL, NULL, (void *)&ma, 1);
2588                 }
2589                 else {
2590                         ma.use_fo_hooks = 1;
2591                         mime_parser(mptr, NULL,
2592                                 *fixed_output, *fixed_output_pre,
2593                                 *fixed_output_post, (void *)&ma, 0);
2594                 }
2595
2596         }
2597
2598 DONE:   /* now we're done */
2599         if (do_proto) cprintf("000\n");
2600         return(om_ok);
2601 }
2602
2603
2604 /*
2605  * display a message (mode 0 - Citadel proprietary)
2606  */
2607 void cmd_msg0(char *cmdbuf)
2608 {
2609         long msgid;
2610         int headers_only = HEADERS_ALL;
2611
2612         msgid = extract_long(cmdbuf, 0);
2613         headers_only = extract_int(cmdbuf, 1);
2614
2615         CtdlOutputMsg(msgid, MT_CITADEL, headers_only, 1, 0, NULL, 0, NULL, NULL);
2616         return;
2617 }
2618
2619
2620 /*
2621  * display a message (mode 2 - RFC822)
2622  */
2623 void cmd_msg2(char *cmdbuf)
2624 {
2625         long msgid;
2626         int headers_only = HEADERS_ALL;
2627
2628         msgid = extract_long(cmdbuf, 0);
2629         headers_only = extract_int(cmdbuf, 1);
2630
2631         CtdlOutputMsg(msgid, MT_RFC822, headers_only, 1, 1, NULL, 0, NULL, NULL);
2632 }
2633
2634
2635
2636 /*
2637  * display a message (mode 3 - IGnet raw format - internal programs only)
2638  */
2639 void cmd_msg3(char *cmdbuf)
2640 {
2641         long msgnum;
2642         struct CtdlMessage *msg = NULL;
2643         struct ser_ret smr;
2644
2645         if (CC->internal_pgm == 0) {
2646                 cprintf("%d This command is for internal programs only.\n",
2647                         ERROR + HIGHER_ACCESS_REQUIRED);
2648                 return;
2649         }
2650
2651         msgnum = extract_long(cmdbuf, 0);
2652         msg = CtdlFetchMessage(msgnum, 1);
2653         if (msg == NULL) {
2654                 cprintf("%d Message %ld not found.\n",
2655                         ERROR + MESSAGE_NOT_FOUND, msgnum);
2656                 return;
2657         }
2658
2659         serialize_message(&smr, msg);
2660         CtdlFreeMessage(msg);
2661
2662         if (smr.len == 0) {
2663                 cprintf("%d Unable to serialize message\n",
2664                         ERROR + INTERNAL_ERROR);
2665                 return;
2666         }
2667
2668         cprintf("%d %ld\n", BINARY_FOLLOWS, (long)smr.len);
2669         client_write((char *)smr.ser, (int)smr.len);
2670         free(smr.ser);
2671 }
2672
2673
2674
2675 /*
2676  * Display a message using MIME content types
2677  */
2678 void cmd_msg4(char *cmdbuf)
2679 {
2680         long msgid;
2681         char section[64];
2682
2683         msgid = extract_long(cmdbuf, 0);
2684         extract_token(section, cmdbuf, 1, '|', sizeof section);
2685         CtdlOutputMsg(msgid, MT_MIME, 0, 1, 0, (section[0] ? section : NULL) , 0, NULL, NULL);
2686 }
2687
2688
2689
2690 /*
2691  * Client tells us its preferred message format(s)
2692  */
2693 void cmd_msgp(char *cmdbuf)
2694 {
2695         if (!strcasecmp(cmdbuf, "dont_decode")) {
2696                 CC->msg4_dont_decode = 1;
2697                 cprintf("%d MSG4 will not pre-decode messages.\n", CIT_OK);
2698         }
2699         else {
2700                 safestrncpy(CC->preferred_formats, cmdbuf, sizeof(CC->preferred_formats));
2701                 cprintf("%d Preferred MIME formats have been set.\n", CIT_OK);
2702         }
2703 }
2704
2705
2706 /*
2707  * Open a component of a MIME message as a download file
2708  */
2709 void cmd_opna(char *cmdbuf)
2710 {
2711         long msgid;
2712         char desired_section[128];
2713
2714         msgid = extract_long(cmdbuf, 0);
2715         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2716         safestrncpy(CC->download_desired_section, desired_section,
2717                 sizeof CC->download_desired_section);
2718         CtdlOutputMsg(msgid, MT_DOWNLOAD, 0, 1, 1, NULL, 0, NULL, NULL);
2719 }
2720
2721
2722 /*
2723  * Open a component of a MIME message and transmit it all at once
2724  */
2725 void cmd_dlat(char *cmdbuf)
2726 {
2727         long msgid;
2728         char desired_section[128];
2729
2730         msgid = extract_long(cmdbuf, 0);
2731         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2732         safestrncpy(CC->download_desired_section, desired_section,
2733                 sizeof CC->download_desired_section);
2734         CtdlOutputMsg(msgid, MT_SPEW_SECTION, 0, 1, 1, NULL, 0, NULL, NULL);
2735 }
2736
2737
2738 /*
2739  * Save one or more message pointers into a specified room
2740  * (Returns 0 for success, nonzero for failure)
2741  * roomname may be NULL to use the current room
2742  *
2743  * Note that the 'supplied_msg' field may be set to NULL, in which case
2744  * the message will be fetched from disk, by number, if we need to perform
2745  * replication checks.  This adds an additional database read, so if the
2746  * caller already has the message in memory then it should be supplied.  (Obviously
2747  * this mode of operation only works if we're saving a single message.)
2748  */
2749 int CtdlSaveMsgPointersInRoom(char *roomname, long newmsgidlist[], int num_newmsgs,
2750                         int do_repl_check, struct CtdlMessage *supplied_msg, int suppress_refcount_adj
2751 ) {
2752         struct CitContext *CCC = CC;
2753         int i, j, unique;
2754         char hold_rm[ROOMNAMELEN];
2755         struct cdbdata *cdbfr;
2756         int num_msgs;
2757         long *msglist;
2758         long highest_msg = 0L;
2759
2760         long msgid = 0;
2761         struct CtdlMessage *msg = NULL;
2762
2763         long *msgs_to_be_merged = NULL;
2764         int num_msgs_to_be_merged = 0;
2765
2766         MSG_syslog(LOG_DEBUG,
2767                    "CtdlSaveMsgPointersInRoom(room=%s, num_msgs=%d, repl=%d, suppress_rca=%d)\n",
2768                    roomname, num_newmsgs, do_repl_check, suppress_refcount_adj
2769         );
2770
2771         strcpy(hold_rm, CCC->room.QRname);
2772
2773         /* Sanity checks */
2774         if (newmsgidlist == NULL) return(ERROR + INTERNAL_ERROR);
2775         if (num_newmsgs < 1) return(ERROR + INTERNAL_ERROR);
2776         if (num_newmsgs > 1) supplied_msg = NULL;
2777
2778         /* Now the regular stuff */
2779         if (CtdlGetRoomLock(&CCC->room,
2780            ((roomname != NULL) ? roomname : CCC->room.QRname) )
2781            != 0) {
2782                 MSG_syslog(LOG_ERR, "No such room <%s>\n", roomname);
2783                 return(ERROR + ROOM_NOT_FOUND);
2784         }
2785
2786
2787         msgs_to_be_merged = malloc(sizeof(long) * num_newmsgs);
2788         num_msgs_to_be_merged = 0;
2789
2790
2791         cdbfr = cdb_fetch(CDB_MSGLISTS, &CCC->room.QRnumber, sizeof(long));
2792         if (cdbfr == NULL) {
2793                 msglist = NULL;
2794                 num_msgs = 0;
2795         } else {
2796                 msglist = (long *) cdbfr->ptr;
2797                 cdbfr->ptr = NULL;      /* CtdlSaveMsgPointerInRoom() now owns this memory */
2798                 num_msgs = cdbfr->len / sizeof(long);
2799                 cdb_free(cdbfr);
2800         }
2801
2802
2803         /* Create a list of msgid's which were supplied by the caller, but do
2804          * not already exist in the target room.  It is absolutely taboo to
2805          * have more than one reference to the same message in a room.
2806          */
2807         for (i=0; i<num_newmsgs; ++i) {
2808                 unique = 1;
2809                 if (num_msgs > 0) for (j=0; j<num_msgs; ++j) {
2810                         if (msglist[j] == newmsgidlist[i]) {
2811                                 unique = 0;
2812                         }
2813                 }
2814                 if (unique) {
2815                         msgs_to_be_merged[num_msgs_to_be_merged++] = newmsgidlist[i];
2816                 }
2817         }
2818
2819         MSG_syslog(LOG_DEBUG, "%d unique messages to be merged\n", num_msgs_to_be_merged);
2820
2821         /*
2822          * Now merge the new messages
2823          */
2824         msglist = realloc(msglist, (sizeof(long) * (num_msgs + num_msgs_to_be_merged)) );
2825         if (msglist == NULL) {
2826                 MSGM_syslog(LOG_ALERT, "ERROR: can't realloc message list!\n");
2827                 free(msgs_to_be_merged);
2828                 return (ERROR + INTERNAL_ERROR);
2829         }
2830         memcpy(&msglist[num_msgs], msgs_to_be_merged, (sizeof(long) * num_msgs_to_be_merged) );
2831         num_msgs += num_msgs_to_be_merged;
2832
2833         /* Sort the message list, so all the msgid's are in order */
2834         num_msgs = sort_msglist(msglist, num_msgs);
2835
2836         /* Determine the highest message number */
2837         highest_msg = msglist[num_msgs - 1];
2838
2839         /* Write it back to disk. */
2840         cdb_store(CDB_MSGLISTS, &CCC->room.QRnumber, (int)sizeof(long),
2841                   msglist, (int)(num_msgs * sizeof(long)));
2842
2843         /* Free up the memory we used. */
2844         free(msglist);
2845
2846         /* Update the highest-message pointer and unlock the room. */
2847         CCC->room.QRhighest = highest_msg;
2848         CtdlPutRoomLock(&CCC->room);
2849
2850         /* Perform replication checks if necessary */
2851         if ( (DoesThisRoomNeedEuidIndexing(&CCC->room)) && (do_repl_check) ) {
2852                 MSGM_syslog(LOG_DEBUG, "CtdlSaveMsgPointerInRoom() doing repl checks\n");
2853
2854                 for (i=0; i<num_msgs_to_be_merged; ++i) {
2855                         msgid = msgs_to_be_merged[i];
2856
2857                         if (supplied_msg != NULL) {
2858                                 msg = supplied_msg;
2859                         }
2860                         else {
2861                                 msg = CtdlFetchMessage(msgid, 0);
2862                         }
2863
2864                         if (msg != NULL) {
2865                                 ReplicationChecks(msg);
2866
2867                                 /* If the message has an Exclusive ID, index that... */
2868                                 if (msg->cm_fields['E'] != NULL) {
2869                                         index_message_by_euid(msg->cm_fields['E'], &CCC->room, msgid);
2870                                 }
2871
2872                                 /* Free up the memory we may have allocated */
2873                                 if (msg != supplied_msg) {
2874                                         CtdlFreeMessage(msg);
2875                                 }
2876                         }
2877
2878                 }
2879         }
2880
2881         else {
2882                 MSGM_syslog(LOG_DEBUG, "CtdlSaveMsgPointerInRoom() skips repl checks\n");
2883         }
2884
2885         /* Submit this room for processing by hooks */
2886         PerformRoomHooks(&CCC->room);
2887
2888         /* Go back to the room we were in before we wandered here... */
2889         CtdlGetRoom(&CCC->room, hold_rm);
2890
2891         /* Bump the reference count for all messages which were merged */
2892         if (!suppress_refcount_adj) {
2893                 AdjRefCountList(msgs_to_be_merged, num_msgs_to_be_merged, +1);
2894         }
2895
2896         /* Free up memory... */
2897         if (msgs_to_be_merged != NULL) {
2898                 free(msgs_to_be_merged);
2899         }
2900
2901         /* Return success. */
2902         return (0);
2903 }
2904
2905
2906 /*
2907  * This is the same as CtdlSaveMsgPointersInRoom() but it only accepts
2908  * a single message.
2909  */
2910 int CtdlSaveMsgPointerInRoom(char *roomname, long msgid,
2911                              int do_repl_check, struct CtdlMessage *supplied_msg)
2912 {
2913         return CtdlSaveMsgPointersInRoom(roomname, &msgid, 1, do_repl_check, supplied_msg, 0);
2914 }
2915
2916
2917
2918
2919 /*
2920  * Message base operation to save a new message to the message store
2921  * (returns new message number)
2922  *
2923  * This is the back end for CtdlSubmitMsg() and should not be directly
2924  * called by server-side modules.
2925  *
2926  */
2927 long send_message(struct CtdlMessage *msg) {
2928         struct CitContext *CCC = CC;
2929         long newmsgid;
2930         long retval;
2931         char msgidbuf[256];
2932         struct ser_ret smr;
2933         int is_bigmsg = 0;
2934         char *holdM = NULL;
2935
2936         /* Get a new message number */
2937         newmsgid = get_new_message_number();
2938         snprintf(msgidbuf, sizeof msgidbuf, "%08lX-%08lX@%s",
2939                  (long unsigned int) time(NULL),
2940                  (long unsigned int) newmsgid,
2941                  config.c_fqdn
2942                 );
2943
2944         /* Generate an ID if we don't have one already */
2945         if (msg->cm_fields['I']==NULL) {
2946                 msg->cm_fields['I'] = strdup(msgidbuf);
2947         }
2948
2949         /* If the message is big, set its body aside for storage elsewhere */
2950         if (msg->cm_fields['M'] != NULL) {
2951                 if (strlen(msg->cm_fields['M']) > BIGMSG) {
2952                         is_bigmsg = 1;
2953                         holdM = msg->cm_fields['M'];
2954                         msg->cm_fields['M'] = NULL;
2955                 }
2956         }
2957
2958         /* Serialize our data structure for storage in the database */
2959         serialize_message(&smr, msg);
2960
2961         if (is_bigmsg) {
2962                 msg->cm_fields['M'] = holdM;
2963         }
2964
2965         if (smr.len == 0) {
2966                 cprintf("%d Unable to serialize message\n",
2967                         ERROR + INTERNAL_ERROR);
2968                 return (-1L);
2969         }
2970
2971         /* Write our little bundle of joy into the message base */
2972         if (cdb_store(CDB_MSGMAIN, &newmsgid, (int)sizeof(long),
2973                       smr.ser, smr.len) < 0) {
2974                 MSGM_syslog(LOG_ERR, "Can't store message\n");
2975                 retval = 0L;
2976         } else {
2977                 if (is_bigmsg) {
2978                         cdb_store(CDB_BIGMSGS,
2979                                   &newmsgid,
2980                                   (int)sizeof(long),
2981                                   holdM,
2982                                   (strlen(holdM) + 1)
2983                                 );
2984                 }
2985                 retval = newmsgid;
2986         }
2987
2988         /* Free the memory we used for the serialized message */
2989         free(smr.ser);
2990
2991         /* Return the *local* message ID to the caller
2992          * (even if we're storing an incoming network message)
2993          */
2994         return(retval);
2995 }
2996
2997
2998
2999 /*
3000  * Serialize a struct CtdlMessage into the format used on disk and network.
3001  *
3002  * This function loads up a "struct ser_ret" (defined in server.h) which
3003  * contains the length of the serialized message and a pointer to the
3004  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
3005  */
3006 void serialize_message(struct ser_ret *ret,             /* return values */
3007                        struct CtdlMessage *msg) /* unserialized msg */
3008 {
3009         struct CitContext *CCC = CC;
3010         size_t wlen, fieldlen;
3011         int i;
3012         static char *forder = FORDER;
3013
3014         /*
3015          * Check for valid message format
3016          */
3017         if (is_valid_message(msg) == 0) {
3018                 MSGM_syslog(LOG_ERR, "serialize_message() aborting due to invalid message\n");
3019                 ret->len = 0;
3020                 ret->ser = NULL;
3021                 return;
3022         }
3023
3024         ret->len = 3;
3025         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL)
3026                                      ret->len = ret->len +
3027                                              strlen(msg->cm_fields[(int)forder[i]]) + 2;
3028
3029         ret->ser = malloc(ret->len);
3030         if (ret->ser == NULL) {
3031                 MSG_syslog(LOG_ERR, "serialize_message() malloc(%ld) failed: %s\n",
3032                            (long)ret->len, strerror(errno));
3033                 ret->len = 0;
3034                 ret->ser = NULL;
3035                 return;
3036         }
3037
3038         ret->ser[0] = 0xFF;
3039         ret->ser[1] = msg->cm_anon_type;
3040         ret->ser[2] = msg->cm_format_type;
3041         wlen = 3;
3042
3043         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
3044                         fieldlen = strlen(msg->cm_fields[(int)forder[i]]);
3045                         ret->ser[wlen++] = (char)forder[i];
3046                         safestrncpy((char *)&ret->ser[wlen], msg->cm_fields[(int)forder[i]], fieldlen+1);
3047                         wlen = wlen + fieldlen + 1;
3048                 }
3049         if (ret->len != wlen) {
3050                 MSG_syslog(LOG_ERR, "ERROR: len=%ld wlen=%ld\n",
3051                            (long)ret->len, (long)wlen);
3052         }
3053
3054         return;
3055 }
3056
3057
3058 /*
3059  * Check to see if any messages already exist in the current room which
3060  * carry the same Exclusive ID as this one.  If any are found, delete them.
3061  */
3062 void ReplicationChecks(struct CtdlMessage *msg) {
3063         struct CitContext *CCC = CC;
3064         long old_msgnum = (-1L);
3065
3066         if (DoesThisRoomNeedEuidIndexing(&CCC->room) == 0) return;
3067
3068         MSG_syslog(LOG_DEBUG, "Performing replication checks in <%s>\n",
3069                    CCC->room.QRname);
3070
3071         /* No exclusive id?  Don't do anything. */
3072         if (msg == NULL) return;
3073         if (msg->cm_fields['E'] == NULL) return;
3074         if (IsEmptyStr(msg->cm_fields['E'])) return;
3075         /*MSG_syslog(LOG_DEBUG, "Exclusive ID: <%s> for room <%s>\n",
3076           msg->cm_fields['E'], CCC->room.QRname);*/
3077
3078         old_msgnum = CtdlLocateMessageByEuid(msg->cm_fields['E'], &CCC->room);
3079         if (old_msgnum > 0L) {
3080                 MSG_syslog(LOG_DEBUG, "ReplicationChecks() replacing message %ld\n", old_msgnum);
3081                 CtdlDeleteMessages(CCC->room.QRname, &old_msgnum, 1, "");
3082         }
3083 }
3084
3085
3086
3087 /*
3088  * Save a message to disk and submit it into the delivery system.
3089  */
3090 long CtdlSubmitMsg(struct CtdlMessage *msg,     /* message to save */
3091                    struct recptypes *recps,     /* recipients (if mail) */
3092                    const char *force,           /* force a particular room? */
3093                    int flags                    /* should the message be exported clean? */
3094         )
3095 {
3096         char submit_filename[128];
3097         char generated_timestamp[32];
3098         char hold_rm[ROOMNAMELEN];
3099         char actual_rm[ROOMNAMELEN];
3100         char force_room[ROOMNAMELEN];
3101         char content_type[SIZ];                 /* We have to learn this */
3102         char recipient[SIZ];
3103         const char *room;
3104         long newmsgid;
3105         const char *mptr = NULL;
3106         struct ctdluser userbuf;
3107         int a, i;
3108         struct MetaData smi;
3109         FILE *network_fp = NULL;
3110         static int seqnum = 1;
3111         struct CtdlMessage *imsg = NULL;
3112         char *instr = NULL;
3113         size_t instr_alloc = 0;
3114         struct ser_ret smr;
3115         char *hold_R, *hold_D;
3116         char *collected_addresses = NULL;
3117         struct addresses_to_be_filed *aptr = NULL;
3118         StrBuf *saved_rfc822_version = NULL;
3119         int qualified_for_journaling = 0;
3120         CitContext *CCC = MyContext();
3121         char bounce_to[1024] = "";
3122         int rv = 0;
3123
3124         MSGM_syslog(LOG_DEBUG, "CtdlSubmitMsg() called\n");
3125         if (is_valid_message(msg) == 0) return(-1);     /* self check */
3126
3127         /* If this message has no timestamp, we take the liberty of
3128          * giving it one, right now.
3129          */
3130         if (msg->cm_fields['T'] == NULL) {
3131                 snprintf(generated_timestamp, sizeof generated_timestamp, "%ld", (long)time(NULL));
3132                 msg->cm_fields['T'] = strdup(generated_timestamp);
3133         }
3134
3135         /* If this message has no path, we generate one.
3136          */
3137         if (msg->cm_fields['P'] == NULL) {
3138                 if (msg->cm_fields['A'] != NULL) {
3139                         msg->cm_fields['P'] = strdup(msg->cm_fields['A']);
3140                         for (a=0; !IsEmptyStr(&msg->cm_fields['P'][a]); ++a) {
3141                                 if (isspace(msg->cm_fields['P'][a])) {
3142                                         msg->cm_fields['P'][a] = ' ';
3143                                 }
3144                         }
3145                 }
3146                 else {
3147                         msg->cm_fields['P'] = strdup("unknown");
3148                 }
3149         }
3150
3151         if (force == NULL) {
3152                 strcpy(force_room, "");
3153         }
3154         else {
3155                 strcpy(force_room, force);
3156         }
3157
3158         /* Learn about what's inside, because it's what's inside that counts */
3159         if (msg->cm_fields['M'] == NULL) {
3160                 MSGM_syslog(LOG_ERR, "ERROR: attempt to save message with NULL body\n");
3161                 return(-2);
3162         }
3163
3164         switch (msg->cm_format_type) {
3165         case 0:
3166                 strcpy(content_type, "text/x-citadel-variformat");
3167                 break;
3168         case 1:
3169                 strcpy(content_type, "text/plain");
3170                 break;
3171         case 4:
3172                 strcpy(content_type, "text/plain");
3173                 mptr = bmstrcasestr(msg->cm_fields['M'], "Content-type:");
3174                 if (mptr != NULL) {
3175                         char *aptr;
3176                         safestrncpy(content_type, &mptr[13], sizeof content_type);
3177                         striplt(content_type);
3178                         aptr = content_type;
3179                         while (!IsEmptyStr(aptr)) {
3180                                 if ((*aptr == ';')
3181                                     || (*aptr == ' ')
3182                                     || (*aptr == 13)
3183                                     || (*aptr == 10)) {
3184                                         *aptr = 0;
3185                                 }
3186                                 else aptr++;
3187                         }
3188                 }
3189         }
3190
3191         /* Goto the correct room */
3192         room = (recps) ? CCC->room.QRname : SENTITEMS;
3193         MSG_syslog(LOG_DEBUG, "Selected room %s\n", room);
3194         strcpy(hold_rm, CCC->room.QRname);
3195         strcpy(actual_rm, CCC->room.QRname);
3196         if (recps != NULL) {
3197                 strcpy(actual_rm, SENTITEMS);
3198         }
3199
3200         /* If the user is a twit, move to the twit room for posting */
3201         if (TWITDETECT) {
3202                 if (CCC->user.axlevel == AxProbU) {
3203                         strcpy(hold_rm, actual_rm);
3204                         strcpy(actual_rm, config.c_twitroom);
3205                         MSGM_syslog(LOG_DEBUG, "Diverting to twit room\n");
3206                 }
3207         }
3208
3209         /* ...or if this message is destined for Aide> then go there. */
3210         if (!IsEmptyStr(force_room)) {
3211                 strcpy(actual_rm, force_room);
3212         }
3213
3214         MSG_syslog(LOG_INFO, "Final selection: %s (%s)\n", actual_rm, room);
3215         if (strcasecmp(actual_rm, CCC->room.QRname)) {
3216                 /* CtdlGetRoom(&CCC->room, actual_rm); */
3217                 CtdlUserGoto(actual_rm, 0, 1, NULL, NULL);
3218         }
3219
3220         /*
3221          * If this message has no O (room) field, generate one.
3222          */
3223         if (msg->cm_fields['O'] == NULL) {
3224                 msg->cm_fields['O'] = strdup(CCC->room.QRname);
3225         }
3226
3227         /* Perform "before save" hooks (aborting if any return nonzero) */
3228         MSGM_syslog(LOG_DEBUG, "Performing before-save hooks\n");
3229         if (PerformMessageHooks(msg, EVT_BEFORESAVE) > 0) return(-3);
3230
3231         /*
3232          * If this message has an Exclusive ID, and the room is replication
3233          * checking enabled, then do replication checks.
3234          */
3235         if (DoesThisRoomNeedEuidIndexing(&CCC->room)) {
3236                 ReplicationChecks(msg);
3237         }
3238
3239         /* Save it to disk */
3240         MSGM_syslog(LOG_DEBUG, "Saving to disk\n");
3241         newmsgid = send_message(msg);
3242         if (newmsgid <= 0L) return(-5);
3243
3244         /* Write a supplemental message info record.  This doesn't have to
3245          * be a critical section because nobody else knows about this message
3246          * yet.
3247          */
3248         MSGM_syslog(LOG_DEBUG, "Creating MetaData record\n");
3249         memset(&smi, 0, sizeof(struct MetaData));
3250         smi.meta_msgnum = newmsgid;
3251         smi.meta_refcount = 0;
3252         safestrncpy(smi.meta_content_type, content_type,
3253                     sizeof smi.meta_content_type);
3254
3255         /*
3256          * Measure how big this message will be when rendered as RFC822.
3257          * We do this for two reasons:
3258          * 1. We need the RFC822 length for the new metadata record, so the
3259          *    POP and IMAP services don't have to calculate message lengths
3260          *    while the user is waiting (multiplied by potentially hundreds
3261          *    or thousands of messages).
3262          * 2. If journaling is enabled, we will need an RFC822 version of the
3263          *    message to attach to the journalized copy.
3264          */
3265         if (CCC->redirect_buffer != NULL) {
3266                 MSGM_syslog(LOG_ALERT, "CCC->redirect_buffer is not NULL during message submission!\n");
3267                 abort();
3268         }
3269         CCC->redirect_buffer = NewStrBufPlain(NULL, SIZ);
3270         CtdlOutputPreLoadedMsg(msg, MT_RFC822, HEADERS_ALL, 0, 1, QP_EADDR);
3271         smi.meta_rfc822_length = StrLength(CCC->redirect_buffer);
3272         saved_rfc822_version = CCC->redirect_buffer;
3273         CCC->redirect_buffer = NULL;
3274
3275         PutMetaData(&smi);
3276
3277         /* Now figure out where to store the pointers */
3278         MSGM_syslog(LOG_DEBUG, "Storing pointers\n");
3279
3280         /* If this is being done by the networker delivering a private
3281          * message, we want to BYPASS saving the sender's copy (because there
3282          * is no local sender; it would otherwise go to the Trashcan).
3283          */
3284         if ((!CCC->internal_pgm) || (recps == NULL)) {
3285                 if (CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 1, msg) != 0) {
3286                         MSGM_syslog(LOG_ERR, "ERROR saving message pointer!\n");
3287                         CtdlSaveMsgPointerInRoom(config.c_aideroom, newmsgid, 0, msg);
3288                 }
3289         }
3290
3291         /* For internet mail, drop a copy in the outbound queue room */
3292         if ((recps != NULL) && (recps->num_internet > 0)) {
3293                 CtdlSaveMsgPointerInRoom(SMTP_SPOOLOUT_ROOM, newmsgid, 0, msg);
3294         }
3295
3296         /* If other rooms are specified, drop them there too. */
3297         if ((recps != NULL) && (recps->num_room > 0))
3298                 for (i=0; i<num_tokens(recps->recp_room, '|'); ++i) {
3299                         extract_token(recipient, recps->recp_room, i,
3300                                       '|', sizeof recipient);
3301                         MSG_syslog(LOG_DEBUG, "Delivering to room <%s>\n", recipient);///// xxxx
3302                         CtdlSaveMsgPointerInRoom(recipient, newmsgid, 0, msg);
3303                 }
3304
3305         /* Bump this user's messages posted counter. */
3306         MSGM_syslog(LOG_DEBUG, "Updating user\n");
3307         CtdlGetUserLock(&CCC->user, CCC->curr_user);
3308         CCC->user.posted = CCC->user.posted + 1;
3309         CtdlPutUserLock(&CCC->user);
3310
3311         /* Decide where bounces need to be delivered */
3312         if ((recps != NULL) && (recps->bounce_to != NULL)) {
3313                 safestrncpy(bounce_to, recps->bounce_to, sizeof bounce_to);
3314         }
3315         else if (CCC->logged_in) {
3316                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", CCC->user.fullname, config.c_nodename);
3317         }
3318         else {
3319                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", msg->cm_fields['A'], msg->cm_fields['N']);
3320         }
3321
3322         /* If this is private, local mail, make a copy in the
3323          * recipient's mailbox and bump the reference count.
3324          */
3325         if ((recps != NULL) && (recps->num_local > 0))
3326                 for (i=0; i<num_tokens(recps->recp_local, '|'); ++i) {
3327                         extract_token(recipient, recps->recp_local, i,
3328                                       '|', sizeof recipient);
3329                         MSG_syslog(LOG_DEBUG, "Delivering private local mail to <%s>\n",
3330                                recipient);
3331                         if (CtdlGetUser(&userbuf, recipient) == 0) {
3332                                 CtdlMailboxName(actual_rm, sizeof actual_rm, &userbuf, MAILROOM);
3333                                 CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 0, msg);
3334                                 CtdlBumpNewMailCounter(userbuf.usernum);
3335                                 if (!IsEmptyStr(config.c_funambol_host) || !IsEmptyStr(config.c_pager_program)) {
3336                                         /* Generate a instruction message for the Funambol notification
3337                                          * server, in the same style as the SMTP queue
3338                                          */
3339                                         instr_alloc = 1024;
3340                                         instr = malloc(instr_alloc);
3341                                         snprintf(instr, instr_alloc,
3342                                                  "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
3343                                                  "bounceto|%s\n",
3344                                                  SPOOLMIME, newmsgid, (long)time(NULL),
3345                                                  bounce_to
3346                                                 );
3347
3348                                         imsg = malloc(sizeof(struct CtdlMessage));
3349                                         memset(imsg, 0, sizeof(struct CtdlMessage));
3350                                         imsg->cm_magic = CTDLMESSAGE_MAGIC;
3351                                         imsg->cm_anon_type = MES_NORMAL;
3352                                         imsg->cm_format_type = FMT_RFC822;
3353                                         imsg->cm_fields['U'] = strdup("QMSG");
3354                                         imsg->cm_fields['A'] = strdup("Citadel");
3355                                         imsg->cm_fields['J'] = strdup("do not journal");
3356                                         imsg->cm_fields['M'] = instr;   /* imsg owns this memory now */
3357                                         imsg->cm_fields['2'] = strdup(recipient);
3358                                         CtdlSubmitMsg(imsg, NULL, FNBL_QUEUE_ROOM, 0);
3359                                         CtdlFreeMessage(imsg);
3360                                 }
3361                         }
3362                         else {
3363                                 MSG_syslog(LOG_DEBUG, "No user <%s>\n", recipient);
3364                                 CtdlSaveMsgPointerInRoom(config.c_aideroom, newmsgid, 0, msg);
3365                         }
3366                 }
3367
3368         /* Perform "after save" hooks */
3369         MSGM_syslog(LOG_DEBUG, "Performing after-save hooks\n");
3370         if (msg->cm_fields['3'] != NULL) free(msg->cm_fields['3']);
3371         msg->cm_fields['3'] = malloc(20);
3372         snprintf(msg->cm_fields['3'], 20, "%ld", newmsgid);
3373         PerformMessageHooks(msg, EVT_AFTERSAVE);
3374         free(msg->cm_fields['3']);
3375         msg->cm_fields['3'] = NULL;
3376
3377         /* For IGnet mail, we have to save a new copy into the spooler for
3378          * each recipient, with the R and D fields set to the recipient and
3379          * destination-node.  This has two ugly side effects: all other
3380          * recipients end up being unlisted in this recipient's copy of the
3381          * message, and it has to deliver multiple messages to the same
3382          * node.  We'll revisit this again in a year or so when everyone has
3383          * a network spool receiver that can handle the new style messages.
3384          */
3385         if ((recps != NULL) && (recps->num_ignet > 0))
3386                 for (i=0; i<num_tokens(recps->recp_ignet, '|'); ++i) {
3387                         extract_token(recipient, recps->recp_ignet, i,
3388                                       '|', sizeof recipient);
3389
3390                         hold_R = msg->cm_fields['R'];
3391                         hold_D = msg->cm_fields['D'];
3392                         msg->cm_fields['R'] = malloc(SIZ);
3393                         msg->cm_fields['D'] = malloc(128);
3394                         extract_token(msg->cm_fields['R'], recipient, 0, '@', SIZ);
3395                         extract_token(msg->cm_fields['D'], recipient, 1, '@', 128);
3396
3397                         serialize_message(&smr, msg);
3398                         if (smr.len > 0) {
3399                                 snprintf(submit_filename, sizeof submit_filename,
3400                                          "%s/netmail.%04lx.%04x.%04x",
3401                                          ctdl_netin_dir,
3402                                          (long) getpid(), CCC->cs_pid, ++seqnum);
3403                                 network_fp = fopen(submit_filename, "wb+");
3404                                 if (network_fp != NULL) {
3405                                         rv = fwrite(smr.ser, smr.len, 1, network_fp);
3406                                         if (rv == -1) {
3407                                                 MSG_syslog(LOG_EMERG, "CtdlSubmitMsg(): Couldn't write network spool file: %s\n",
3408                                                            strerror(errno));
3409                                         }
3410                                         fclose(network_fp);
3411                                 }
3412                                 free(smr.ser);
3413                         }
3414
3415                         free(msg->cm_fields['R']);
3416                         free(msg->cm_fields['D']);
3417                         msg->cm_fields['R'] = hold_R;
3418                         msg->cm_fields['D'] = hold_D;
3419                 }
3420
3421         /* Go back to the room we started from */
3422         MSG_syslog(LOG_DEBUG, "Returning to original room %s\n", hold_rm);
3423         if (strcasecmp(hold_rm, CCC->room.QRname))
3424                 CtdlUserGoto(hold_rm, 0, 1, NULL, NULL);
3425
3426         /* For internet mail, generate delivery instructions.
3427          * Yes, this is recursive.  Deal with it.  Infinite recursion does
3428          * not happen because the delivery instructions message does not
3429          * contain a recipient.
3430          */
3431         if ((recps != NULL) && (recps->num_internet > 0)) {
3432                 StrBuf *SpoolMsg = NewStrBuf();
3433                 long nTokens;
3434
3435                 MSGM_syslog(LOG_DEBUG, "Generating delivery instructions\n");
3436
3437                 StrBufPrintf(SpoolMsg,
3438                              "Content-type: "SPOOLMIME"\n"
3439                              "\n"
3440                              "msgid|%ld\n"
3441                              "submitted|%ld\n"
3442                              "bounceto|%s\n",
3443                              newmsgid,
3444                              (long)time(NULL),
3445                              bounce_to);
3446
3447                 if (recps->envelope_from != NULL) {
3448                         StrBufAppendBufPlain(SpoolMsg, HKEY("envelope_from|"), 0);
3449                         StrBufAppendBufPlain(SpoolMsg, recps->envelope_from, -1, 0);
3450                         StrBufAppendBufPlain(SpoolMsg, HKEY("\n"), 0);
3451                 }
3452                 if (recps->sending_room != NULL) {
3453                         StrBufAppendBufPlain(SpoolMsg, HKEY("source_room|"), 0);
3454                         StrBufAppendBufPlain(SpoolMsg, recps->sending_room, -1, 0);
3455                         StrBufAppendBufPlain(SpoolMsg, HKEY("\n"), 0);
3456                 }
3457
3458                 nTokens = num_tokens(recps->recp_internet, '|');
3459                 for (i = 0; i < nTokens; i++) {
3460                         long len;
3461                         len = extract_token(recipient, recps->recp_internet, i, '|', sizeof recipient);
3462                         if (len > 0) {
3463                                 StrBufAppendBufPlain(SpoolMsg, HKEY("remote|"), 0);
3464                                 StrBufAppendBufPlain(SpoolMsg, recipient, len, 0);
3465                                 StrBufAppendBufPlain(SpoolMsg, HKEY("|0||\n"), 0);
3466                         }
3467                 }
3468
3469                 imsg = malloc(sizeof(struct CtdlMessage));
3470                 memset(imsg, 0, sizeof(struct CtdlMessage));
3471                 imsg->cm_magic = CTDLMESSAGE_MAGIC;
3472                 imsg->cm_anon_type = MES_NORMAL;
3473                 imsg->cm_format_type = FMT_RFC822;
3474                 imsg->cm_fields['U'] = strdup("QMSG");
3475                 imsg->cm_fields['A'] = strdup("Citadel");
3476                 imsg->cm_fields['J'] = strdup("do not journal");
3477                 imsg->cm_fields['M'] = SmashStrBuf(&SpoolMsg);  /* imsg owns this memory now */
3478                 CtdlSubmitMsg(imsg, NULL, SMTP_SPOOLOUT_ROOM, QP_EADDR);
3479                 CtdlFreeMessage(imsg);
3480         }
3481
3482         /*
3483          * Any addresses to harvest for someone's address book?
3484          */
3485         if ( (CCC->logged_in) && (recps != NULL) ) {
3486                 collected_addresses = harvest_collected_addresses(msg);
3487         }
3488
3489         if (collected_addresses != NULL) {
3490                 aptr = (struct addresses_to_be_filed *)
3491                         malloc(sizeof(struct addresses_to_be_filed));
3492                 CtdlMailboxName(actual_rm, sizeof actual_rm,
3493                                 &CCC->user, USERCONTACTSROOM);
3494                 aptr->roomname = strdup(actual_rm);
3495                 aptr->collected_addresses = collected_addresses;
3496                 begin_critical_section(S_ATBF);
3497                 aptr->next = atbf;
3498                 atbf = aptr;
3499                 end_critical_section(S_ATBF);
3500         }
3501
3502         /*
3503          * Determine whether this message qualifies for journaling.
3504          */
3505         if (msg->cm_fields['J'] != NULL) {
3506                 qualified_for_journaling = 0;
3507         }
3508         else {
3509                 if (recps == NULL) {
3510                         qualified_for_journaling = config.c_journal_pubmsgs;
3511                 }
3512                 else if (recps->num_local + recps->num_ignet + recps->num_internet > 0) {
3513                         qualified_for_journaling = config.c_journal_email;
3514                 }
3515                 else {
3516                         qualified_for_journaling = config.c_journal_pubmsgs;
3517                 }
3518         }
3519
3520         /*
3521          * Do we have to perform journaling?  If so, hand off the saved
3522          * RFC822 version will be handed off to the journaler for background
3523          * submit.  Otherwise, we have to free the memory ourselves.
3524          */
3525         if (saved_rfc822_version != NULL) {
3526                 if (qualified_for_journaling) {
3527                         JournalBackgroundSubmit(msg, saved_rfc822_version, recps);
3528                 }
3529                 else {
3530                         FreeStrBuf(&saved_rfc822_version);
3531                 }
3532         }
3533
3534         /* Done. */
3535         return(newmsgid);
3536 }
3537
3538
3539 /*
3540  * Convenience function for generating small administrative messages.
3541  */
3542 void quickie_message(const char *from,
3543                      const char *fromaddr,
3544                      char *to,
3545                      char *room,
3546                      const char *text,
3547                      int format_type,
3548                      const char *subject)
3549 {
3550         struct CtdlMessage *msg;
3551         struct recptypes *recp = NULL;
3552
3553         msg = malloc(sizeof(struct CtdlMessage));
3554         memset(msg, 0, sizeof(struct CtdlMessage));
3555         msg->cm_magic = CTDLMESSAGE_MAGIC;
3556         msg->cm_anon_type = MES_NORMAL;
3557         msg->cm_format_type = format_type;
3558
3559         if (from != NULL) {
3560                 msg->cm_fields['A'] = strdup(from);
3561         }
3562         else if (fromaddr != NULL) {
3563                 msg->cm_fields['A'] = strdup(fromaddr);
3564                 if (strchr(msg->cm_fields['A'], '@')) {
3565                         *strchr(msg->cm_fields['A'], '@') = 0;
3566                 }
3567         }
3568         else {
3569                 msg->cm_fields['A'] = strdup("Citadel");
3570         }
3571
3572         if (fromaddr != NULL) msg->cm_fields['F'] = strdup(fromaddr);
3573         if (room != NULL) msg->cm_fields['O'] = strdup(room);
3574         msg->cm_fields['N'] = strdup(NODENAME);
3575         if (to != NULL) {
3576                 msg->cm_fields['R'] = strdup(to);
3577                 recp = validate_recipients(to, NULL, 0);
3578         }
3579         if (subject != NULL) {
3580                 msg->cm_fields['U'] = strdup(subject);
3581         }
3582         msg->cm_fields['M'] = strdup(text);
3583
3584         CtdlSubmitMsg(msg, recp, room, 0);
3585         CtdlFreeMessage(msg);
3586         if (recp != NULL) free_recipients(recp);
3587 }
3588
3589 void flood_protect_quickie_message(const char *from,
3590                                    const char *fromaddr,
3591                                    char *to,
3592                                    char *room,
3593                                    const char *text,
3594                                    int format_type,
3595                                    const char *subject,
3596                                    int nCriterions,
3597                                    const char **CritStr,
3598                                    long *CritStrLen)
3599 {
3600         int i;
3601         struct UseTable ut;
3602         u_char rawdigest[MD5_DIGEST_LEN];
3603         struct MD5Context md5context;
3604         StrBuf *guid;
3605         struct cdbdata *cdbut;
3606         char timestamp[64];
3607         long tslen;
3608         time_t ts = time(NULL);
3609         time_t tsday = ts / (8*60*60); /* just care for a day... */
3610
3611         tslen = snprintf(timestamp, sizeof(timestamp), "%ld", tsday);
3612         MD5Init(&md5context);
3613
3614         for (i = 0; i < nCriterions; i++)
3615                 MD5Update(&md5context,
3616                           (const unsigned char*)CritStr[i], CritStrLen[i]);
3617         MD5Update(&md5context,
3618                   (const unsigned char*)timestamp, tslen);
3619         MD5Final(rawdigest, &md5context);
3620
3621         guid = NewStrBufPlain(NULL,
3622                               MD5_DIGEST_LEN * 2 + 12);
3623         StrBufHexEscAppend(guid, NULL, rawdigest, MD5_DIGEST_LEN);
3624         StrBufAppendBufPlain(guid, HKEY("_fldpt"), 0);
3625         if (StrLength(guid) > 40)
3626                 StrBufCutAt(guid, 40, NULL);
3627         /* Find out if we've already sent a similar message */
3628         memcpy(ut.ut_msgid, SKEY(guid));
3629         ut.ut_timestamp = ts;
3630
3631         cdbut = cdb_fetch(CDB_USETABLE, SKEY(guid));
3632
3633         if (cdbut != NULL) {
3634                 /* yes, we did. flood protection kicks in. */
3635                 syslog(LOG_DEBUG,
3636                        "not sending message again\n");
3637                 cdb_free(cdbut);
3638         }
3639
3640         /* rewrite the record anyway, to update the timestamp */
3641         cdb_store(CDB_USETABLE,
3642                   SKEY(guid),
3643                   &ut, sizeof(struct UseTable) );
3644
3645         FreeStrBuf(&guid);
3646
3647         if (cdbut != NULL) return;
3648         /* no, this message isn't sent recently; go ahead. */
3649         quickie_message(from,
3650                         fromaddr,
3651                         to,
3652                         room,
3653                         text,
3654                         format_type,
3655                         subject);
3656 }
3657
3658
3659 /*
3660  * Back end function used by CtdlMakeMessage() and similar functions
3661  */
3662 StrBuf *CtdlReadMessageBodyBuf(char *terminator,        /* token signalling EOT */
3663                                long tlen,
3664                                size_t maxlen,           /* maximum message length */
3665                                StrBuf *exist,           /* if non-null, append to it;
3666                                                            exist is ALWAYS freed  */
3667                                int crlf,                /* CRLF newlines instead of LF */
3668                                int *sock                /* socket handle or 0 for this session's client socket */
3669         )
3670 {
3671         StrBuf *Message;
3672         StrBuf *LineBuf;
3673         int flushing = 0;
3674         int finished = 0;
3675         int dotdot = 0;
3676
3677         LineBuf = NewStrBufPlain(NULL, SIZ);
3678         if (exist == NULL) {
3679                 Message = NewStrBufPlain(NULL, 4 * SIZ);
3680         }
3681         else {
3682                 Message = NewStrBufDup(exist);
3683         }
3684
3685         /* Do we need to change leading ".." to "." for SMTP escaping? */
3686         if ((tlen == 1) && (*terminator == '.')) {
3687                 dotdot = 1;
3688         }
3689
3690         /* read in the lines of message text one by one */
3691         do {
3692                 if (sock != NULL) {
3693                         if ((CtdlSockGetLine(sock, LineBuf, 5) < 0) ||
3694                             (*sock == -1))
3695                                 finished = 1;
3696                 }
3697                 else {
3698                         if (CtdlClientGetLine(LineBuf) < 0) finished = 1;
3699                 }
3700                 if ((StrLength(LineBuf) == tlen) &&
3701                     (!strcmp(ChrPtr(LineBuf), terminator)))
3702                         finished = 1;
3703
3704                 if ( (!flushing) && (!finished) ) {
3705                         if (crlf) {
3706                                 StrBufAppendBufPlain(LineBuf, HKEY("\r\n"), 0);
3707                         }
3708                         else {
3709                                 StrBufAppendBufPlain(LineBuf, HKEY("\n"), 0);
3710                         }
3711
3712                         /* Unescape SMTP-style input of two dots at the beginning of the line */
3713                         if ((dotdot) &&
3714                             (StrLength(LineBuf) == 2) &&
3715                             (!strcmp(ChrPtr(LineBuf), "..")))
3716                         {
3717                                 StrBufCutLeft(LineBuf, 1);
3718                         }
3719
3720                         StrBufAppendBuf(Message, LineBuf, 0);
3721                 }
3722
3723                 /* if we've hit the max msg length, flush the rest */
3724                 if (StrLength(Message) >= maxlen) flushing = 1;
3725
3726         } while (!finished);
3727         FreeStrBuf(&LineBuf);
3728         return Message;
3729 }
3730
3731 void DeleteAsyncMsg(ReadAsyncMsg **Msg)
3732 {
3733         if (*Msg == NULL)
3734                 return;
3735         FreeStrBuf(&(*Msg)->MsgBuf);
3736
3737         free(*Msg);
3738         *Msg = NULL;
3739 }
3740
3741 ReadAsyncMsg *NewAsyncMsg(const char *terminator,       /* token signalling EOT */
3742                           long tlen,
3743                           size_t maxlen,                /* maximum message length */
3744                           size_t expectlen,             /* if we expect a message, how long should it be? */
3745                           StrBuf *exist,                /* if non-null, append to it;
3746                                                            exist is ALWAYS freed  */
3747                           long eLen,                    /* length of exist */
3748                           int crlf                      /* CRLF newlines instead of LF */
3749         )
3750 {
3751         ReadAsyncMsg *NewMsg;
3752
3753         NewMsg = (ReadAsyncMsg *)malloc(sizeof(ReadAsyncMsg));
3754         memset(NewMsg, 0, sizeof(ReadAsyncMsg));
3755
3756         if (exist == NULL) {
3757                 long len;
3758
3759                 if (expectlen == 0) {
3760                         len = 4 * SIZ;
3761                 }
3762                 else {
3763                         len = expectlen + 10;
3764                 }
3765                 NewMsg->MsgBuf = NewStrBufPlain(NULL, len);
3766         }
3767         else {
3768                 NewMsg->MsgBuf = NewStrBufDup(exist);
3769         }
3770         /* Do we need to change leading ".." to "." for SMTP escaping? */
3771         if ((tlen == 1) && (*terminator == '.')) {
3772                 NewMsg->dodot = 1;
3773         }
3774
3775         NewMsg->terminator = terminator;
3776         NewMsg->tlen = tlen;
3777
3778         NewMsg->maxlen = maxlen;
3779
3780         NewMsg->crlf = crlf;
3781
3782         return NewMsg;
3783 }
3784
3785 /*
3786  * Back end function used by CtdlMakeMessage() and similar functions
3787  */
3788 eReadState CtdlReadMessageBodyAsync(AsyncIO *IO)
3789 {
3790         ReadAsyncMsg *ReadMsg;
3791         int MsgFinished = 0;
3792         eReadState Finished = eMustReadMore;
3793
3794 #ifdef BIGBAD_IODBG
3795         char fn [SIZ];
3796         FILE *fd;
3797         const char *pch = ChrPtr(IO->SendBuf.Buf);
3798         const char *pchh = IO->SendBuf.ReadWritePointer;
3799         long nbytes;
3800
3801         if (pchh == NULL)
3802                 pchh = pch;
3803
3804         nbytes = StrLength(IO->SendBuf.Buf) - (pchh - pch);
3805         snprintf(fn, SIZ, "/tmp/foolog_ev_%s.%d",
3806                  ((CitContext*)(IO->CitContext))->ServiceName,
3807                  IO->SendBuf.fd);
3808
3809         fd = fopen(fn, "a+");
3810 #endif
3811
3812         ReadMsg = IO->ReadMsg;
3813
3814         /* read in the lines of message text one by one */
3815         do {
3816                 Finished = StrBufChunkSipLine(IO->IOBuf, &IO->RecvBuf);
3817
3818                 switch (Finished) {
3819                 case eMustReadMore: /// read new from socket...
3820 #ifdef BIGBAD_IODBG
3821                         if (IO->RecvBuf.ReadWritePointer != NULL) {
3822                                 nbytes = StrLength(IO->RecvBuf.Buf) - (IO->RecvBuf.ReadWritePointer - ChrPtr(IO->RecvBuf.Buf));
3823                                 fprintf(fd, "Read; Line unfinished: %ld Bytes still in buffer [", nbytes);
3824
3825                                 fwrite(IO->RecvBuf.ReadWritePointer, nbytes, 1, fd);
3826
3827                                 fprintf(fd, "]\n");
3828                         } else {
3829                                 fprintf(fd, "BufferEmpty! \n");
3830                         }
3831                         fclose(fd);
3832 #endif
3833                         return Finished;
3834                     break;
3835                 case eBufferNotEmpty: /* shouldn't happen... */
3836                 case eReadSuccess: /// done for now...
3837                     break;
3838                 case eReadFail: /// WHUT?
3839                     ///todo: shut down!
3840                         break;
3841                 }
3842
3843
3844                 if ((StrLength(IO->IOBuf) == ReadMsg->tlen) &&
3845                     (!strcmp(ChrPtr(IO->IOBuf), ReadMsg->terminator))) {
3846                         MsgFinished = 1;
3847 #ifdef BIGBAD_IODBG
3848                         fprintf(fd, "found Terminator; Message Size: %d\n", StrLength(ReadMsg->MsgBuf));
3849 #endif
3850                 }
3851                 else if (!ReadMsg->flushing) {
3852
3853 #ifdef BIGBAD_IODBG
3854                         fprintf(fd, "Read Line: [%d][%s]\n", StrLength(IO->IOBuf), ChrPtr(IO->IOBuf));
3855 #endif
3856
3857                         /* Unescape SMTP-style input of two dots at the beginning of the line */
3858                         if ((ReadMsg->dodot) &&
3859                             (StrLength(IO->IOBuf) == 2) &&  /* TODO: do we just unescape lines with two dots or any line? */
3860                             (!strcmp(ChrPtr(IO->IOBuf), "..")))
3861                         {
3862 #ifdef BIGBAD_IODBG
3863                                 fprintf(fd, "UnEscaped!\n");
3864 #endif
3865                                 StrBufCutLeft(IO->IOBuf, 1);
3866                         }
3867
3868                         if (ReadMsg->crlf) {
3869                                 StrBufAppendBufPlain(IO->IOBuf, HKEY("\r\n"), 0);
3870                         }
3871                         else {
3872                                 StrBufAppendBufPlain(IO->IOBuf, HKEY("\n"), 0);
3873                         }
3874
3875                         StrBufAppendBuf(ReadMsg->MsgBuf, IO->IOBuf, 0);
3876                 }
3877
3878                 /* if we've hit the max msg length, flush the rest */
3879                 if (StrLength(ReadMsg->MsgBuf) >= ReadMsg->maxlen) ReadMsg->flushing = 1;
3880
3881         } while (!MsgFinished);
3882
3883 #ifdef BIGBAD_IODBG
3884         fprintf(fd, "Done with reading; %s.\n, ",
3885                 (MsgFinished)?"Message Finished": "FAILED");
3886         fclose(fd);
3887 #endif
3888         if (MsgFinished)
3889                 return eReadSuccess;
3890         else
3891                 return eAbort;
3892 }
3893
3894
3895 /*
3896  * Back end function used by CtdlMakeMessage() and similar functions
3897  */
3898 char *CtdlReadMessageBody(char *terminator,     /* token signalling EOT */
3899                           long tlen,
3900                           size_t maxlen,                /* maximum message length */
3901                           StrBuf *exist,                /* if non-null, append to it;
3902                                                    exist is ALWAYS freed  */
3903                           int crlf,             /* CRLF newlines instead of LF */
3904                           int *sock             /* socket handle or 0 for this session's client socket */
3905         )
3906 {
3907         StrBuf *Message;
3908
3909         Message = CtdlReadMessageBodyBuf(terminator,
3910                                          tlen,
3911                                          maxlen,
3912                                          exist,
3913                                          crlf,
3914                                          sock);
3915         if (Message == NULL)
3916                 return NULL;
3917         else
3918                 return SmashStrBuf(&Message);
3919 }
3920
3921
3922 /*
3923  * Build a binary message to be saved on disk.
3924  * (NOTE: if you supply 'preformatted_text', the buffer you give it
3925  * will become part of the message.  This means you are no longer
3926  * responsible for managing that memory -- it will be freed along with
3927  * the rest of the fields when CtdlFreeMessage() is called.)
3928  */
3929
3930 struct CtdlMessage *CtdlMakeMessage(
3931         struct ctdluser *author,        /* author's user structure */
3932         char *recipient,                /* NULL if it's not mail */
3933         char *recp_cc,                  /* NULL if it's not mail */
3934         char *room,                     /* room where it's going */
3935         int type,                       /* see MES_ types in header file */
3936         int format_type,                /* variformat, plain text, MIME... */
3937         char *fake_name,                /* who we're masquerading as */
3938         char *my_email,                 /* which of my email addresses to use (empty is ok) */
3939         char *subject,                  /* Subject (optional) */
3940         char *supplied_euid,            /* ...or NULL if this is irrelevant */
3941         char *preformatted_text,        /* ...or NULL to read text from client */
3942         char *references                /* Thread references */
3943         ) {
3944         char dest_node[256];
3945         char buf[1024];
3946         struct CtdlMessage *msg;
3947         StrBuf *FakeAuthor;
3948         StrBuf *FakeEncAuthor = NULL;
3949
3950         msg = malloc(sizeof(struct CtdlMessage));
3951         memset(msg, 0, sizeof(struct CtdlMessage));
3952         msg->cm_magic = CTDLMESSAGE_MAGIC;
3953         msg->cm_anon_type = type;
3954         msg->cm_format_type = format_type;
3955
3956         /* Don't confuse the poor folks if it's not routed mail. */
3957         strcpy(dest_node, "");
3958
3959         if (recipient != NULL) striplt(recipient);
3960         if (recp_cc != NULL) striplt(recp_cc);
3961
3962         /* Path or Return-Path */
3963         if (my_email == NULL) my_email = "";
3964
3965         if (!IsEmptyStr(my_email)) {
3966                 msg->cm_fields['P'] = strdup(my_email);
3967         }
3968         else {
3969                 snprintf(buf, sizeof buf, "%s", author->fullname);
3970                 msg->cm_fields['P'] = strdup(buf);
3971         }
3972         convert_spaces_to_underscores(msg->cm_fields['P']);
3973
3974         snprintf(buf, sizeof buf, "%ld", (long)time(NULL));     /* timestamp */
3975         msg->cm_fields['T'] = strdup(buf);
3976
3977         if ((fake_name != NULL) && (fake_name[0])) {            /* author */
3978                 FakeAuthor = NewStrBufPlain (fake_name, -1);
3979         }
3980         else {
3981                 FakeAuthor = NewStrBufPlain (author->fullname, -1);
3982         }
3983         StrBufRFC2047encode(&FakeEncAuthor, FakeAuthor);
3984         msg->cm_fields['A'] = SmashStrBuf(&FakeEncAuthor);
3985         FreeStrBuf(&FakeAuthor);
3986
3987         if (CC->room.QRflags & QR_MAILBOX) {            /* room */
3988                 msg->cm_fields['O'] = strdup(&CC->room.QRname[11]);
3989         }
3990         else {
3991                 msg->cm_fields['O'] = strdup(CC->room.QRname);
3992         }
3993
3994         msg->cm_fields['N'] = strdup(NODENAME);         /* nodename */
3995         msg->cm_fields['H'] = strdup(HUMANNODE);                /* hnodename */
3996
3997         if ((recipient != NULL) && (recipient[0] != 0)) {
3998                 msg->cm_fields['R'] = strdup(recipient);
3999         }
4000         if ((recp_cc != NULL) && (recp_cc[0] != 0)) {
4001                 msg->cm_fields['Y'] = strdup(recp_cc);
4002         }
4003         if (dest_node[0] != 0) {
4004                 msg->cm_fields['D'] = strdup(dest_node);
4005         }
4006
4007         if (!IsEmptyStr(my_email)) {
4008                 msg->cm_fields['F'] = strdup(my_email);
4009         }
4010         else if ( (author == &CC->user) && (!IsEmptyStr(CC->cs_inet_email)) ) {
4011                 msg->cm_fields['F'] = strdup(CC->cs_inet_email);
4012         }
4013
4014         if (subject != NULL) {
4015                 long length;
4016                 striplt(subject);
4017                 length = strlen(subject);
4018                 if (length > 0) {
4019                         long i;
4020                         long IsAscii;
4021                         IsAscii = -1;
4022                         i = 0;
4023                         while ((subject[i] != '\0') &&
4024                                (IsAscii = isascii(subject[i]) != 0 ))
4025                                 i++;
4026                         if (IsAscii != 0)
4027                                 msg->cm_fields['U'] = strdup(subject);
4028                         else /* ok, we've got utf8 in the string. */
4029                         {
4030                                 msg->cm_fields['U'] = rfc2047encode(subject, length);
4031                         }
4032
4033                 }
4034         }
4035
4036         if (supplied_euid != NULL) {
4037                 msg->cm_fields['E'] = strdup(supplied_euid);
4038         }
4039
4040         if ((references != NULL) && (!IsEmptyStr(references))) {
4041                 if (msg->cm_fields['W'] != NULL)
4042                         free(msg->cm_fields['W']);
4043                 msg->cm_fields['W'] = strdup(references);
4044         }
4045
4046         if (preformatted_text != NULL) {
4047                 msg->cm_fields['M'] = preformatted_text;
4048         }
4049         else {
4050                 msg->cm_fields['M'] = CtdlReadMessageBody(HKEY("000"), config.c_maxmsglen, NULL, 0, 0);
4051         }
4052
4053         return(msg);
4054 }
4055
4056 /*
4057  * Check to see whether we have permission to post a message in the current
4058  * room.  Returns a *CITADEL ERROR CODE* and puts a message in errmsgbuf, or
4059  * returns 0 on success.
4060  */
4061 int CtdlDoIHavePermissionToPostInThisRoom(
4062         char *errmsgbuf,
4063         size_t n,
4064         const char* RemoteIdentifier,
4065         int PostPublic,
4066         int is_reply
4067         ) {
4068         int ra;
4069
4070         if (!(CC->logged_in) &&
4071             (PostPublic == POST_LOGGED_IN)) {
4072                 snprintf(errmsgbuf, n, "Not logged in.");
4073                 return (ERROR + NOT_LOGGED_IN);
4074         }
4075         else if (PostPublic == CHECK_EXISTANCE) {
4076                 return (0); // We're Evaling whether a recipient exists
4077         }
4078         else if (!(CC->logged_in)) {
4079
4080                 if ((CC->room.QRflags & QR_READONLY)) {
4081                         snprintf(errmsgbuf, n, "Not logged in.");
4082                         return (ERROR + NOT_LOGGED_IN);
4083                 }
4084                 if (CC->room.QRflags2 & QR2_MODERATED) {
4085                         snprintf(errmsgbuf, n, "Not logged in Moderation feature not yet implemented!");
4086                         return (ERROR + NOT_LOGGED_IN);
4087                 }
4088                 if ((PostPublic!=POST_LMTP) &&(CC->room.QRflags2 & QR2_SMTP_PUBLIC) == 0) {
4089
4090                         return CtdlNetconfigCheckRoomaccess(errmsgbuf, n, RemoteIdentifier);
4091                 }
4092                 return (0);
4093
4094         }
4095
4096         if ((CC->user.axlevel < AxProbU)
4097             && ((CC->room.QRflags & QR_MAILBOX) == 0)) {
4098                 snprintf(errmsgbuf, n, "Need to be validated to enter (except in %s> to sysop)", MAILROOM);
4099                 return (ERROR + HIGHER_ACCESS_REQUIRED);
4100         }
4101
4102         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
4103
4104         if (ra & UA_POSTALLOWED) {
4105                 strcpy(errmsgbuf, "OK to post or reply here");
4106                 return(0);
4107         }
4108
4109         if ( (ra & UA_REPLYALLOWED) && (is_reply) ) {
4110                 /*
4111                  * To be thorough, we ought to check to see if the message they are
4112                  * replying to is actually a valid one in this room, but unless this
4113                  * actually becomes a problem we'll go with high performance instead.
4114                  */
4115                 strcpy(errmsgbuf, "OK to reply here");
4116                 return(0);
4117         }
4118
4119         if ( (ra & UA_REPLYALLOWED) && (!is_reply) ) {
4120                 /* Clarify what happened with a better error message */
4121                 snprintf(errmsgbuf, n, "You may only reply to existing messages here.");
4122                 return (ERROR + HIGHER_ACCESS_REQUIRED);
4123         }
4124
4125         snprintf(errmsgbuf, n, "Higher access is required to post in this room.");
4126         return (ERROR + HIGHER_ACCESS_REQUIRED);
4127
4128 }
4129
4130
4131 /*
4132  * Check to see if the specified user has Internet mail permission
4133  * (returns nonzero if permission is granted)
4134  */
4135 int CtdlCheckInternetMailPermission(struct ctdluser *who) {
4136
4137         /* Do not allow twits to send Internet mail */
4138         if (who->axlevel <= AxProbU) return(0);
4139
4140         /* Globally enabled? */
4141         if (config.c_restrict == 0) return(1);
4142
4143         /* User flagged ok? */
4144         if (who->flags & US_INTERNET) return(2);
4145
4146         /* Admin level access? */
4147         if (who->axlevel >= AxAideU) return(3);
4148
4149         /* No mail for you! */
4150         return(0);
4151 }
4152
4153
4154 /*
4155  * Validate recipients, count delivery types and errors, and handle aliasing
4156  * FIXME check for dupes!!!!!
4157  *
4158  * Returns 0 if all addresses are ok, ret->num_error = -1 if no addresses
4159  * were specified, or the number of addresses found invalid.
4160  *
4161  * Caller needs to free the result using free_recipients()
4162  */
4163 struct recptypes *validate_recipients(const char *supplied_recipients,
4164                                       const char *RemoteIdentifier,
4165                                       int Flags) {
4166         struct CitContext *CCC = CC;
4167         struct recptypes *ret;
4168         char *recipients = NULL;
4169         char *org_recp;
4170         char this_recp[256];
4171         char this_recp_cooked[256];
4172         char append[SIZ];
4173         long len;
4174         int num_recps = 0;
4175         int i, j;
4176         int mailtype;
4177         int invalid;
4178         struct ctdluser tempUS;
4179         struct ctdlroom tempQR;
4180         struct ctdlroom tempQR2;
4181         int err = 0;
4182         char errmsg[SIZ];
4183         int in_quotes = 0;
4184
4185         /* Initialize */
4186         ret = (struct recptypes *) malloc(sizeof(struct recptypes));
4187         if (ret == NULL) return(NULL);
4188
4189         /* Set all strings to null and numeric values to zero */
4190         memset(ret, 0, sizeof(struct recptypes));
4191
4192         if (supplied_recipients == NULL) {
4193                 recipients = strdup("");
4194         }
4195         else {
4196                 recipients = strdup(supplied_recipients);
4197         }
4198
4199         /* Allocate some memory.  Yes, this allocates 500% more memory than we will
4200          * actually need, but it's healthier for the heap than doing lots of tiny
4201          * realloc() calls instead.
4202          */
4203         len = strlen(recipients) + 1024;
4204         ret->errormsg = malloc(len);
4205         ret->recp_local = malloc(len);
4206         ret->recp_internet = malloc(len);
4207         ret->recp_ignet = malloc(len);
4208         ret->recp_room = malloc(len);
4209         ret->display_recp = malloc(len);
4210         ret->recp_orgroom = malloc(len);
4211         org_recp = malloc(len);
4212
4213         ret->errormsg[0] = 0;
4214         ret->recp_local[0] = 0;
4215         ret->recp_internet[0] = 0;
4216         ret->recp_ignet[0] = 0;
4217         ret->recp_room[0] = 0;
4218         ret->recp_orgroom[0] = 0;
4219         ret->display_recp[0] = 0;
4220
4221         ret->recptypes_magic = RECPTYPES_MAGIC;
4222
4223         /* Change all valid separator characters to commas */
4224         for (i=0; !IsEmptyStr(&recipients[i]); ++i) {
4225                 if ((recipients[i] == ';') || (recipients[i] == '|')) {
4226                         recipients[i] = ',';
4227                 }
4228         }
4229
4230         /* Now start extracting recipients... */
4231
4232         while (!IsEmptyStr(recipients)) {
4233                 for (i=0; i<=strlen(recipients); ++i) {
4234                         if (recipients[i] == '\"') in_quotes = 1 - in_quotes;
4235                         if ( ( (recipients[i] == ',') && (!in_quotes) ) || (recipients[i] == 0) ) {
4236                                 safestrncpy(this_recp, recipients, i+1);
4237                                 this_recp[i] = 0;
4238                                 if (recipients[i] == ',') {
4239                                         strcpy(recipients, &recipients[i+1]);
4240                                 }
4241                                 else {
4242                                         strcpy(recipients, "");
4243                                 }
4244                                 break;
4245                         }
4246                 }
4247
4248                 striplt(this_recp);
4249                 if (IsEmptyStr(this_recp))
4250                         break;
4251                 MSG_syslog(LOG_DEBUG, "Evaluating recipient #%d: %s\n", num_recps, this_recp);
4252                 ++num_recps;
4253
4254                 strcpy(org_recp, this_recp);
4255                 alias(this_recp);
4256                 alias(this_recp);
4257                 mailtype = alias(this_recp);
4258
4259                 for (j = 0; !IsEmptyStr(&this_recp[j]); ++j) {
4260                         if (this_recp[j]=='_') {
4261                                 this_recp_cooked[j] = ' ';
4262                         }
4263                         else {
4264                                 this_recp_cooked[j] = this_recp[j];
4265                         }
4266                 }
4267                 this_recp_cooked[j] = '\0';
4268                 invalid = 0;
4269                 errmsg[0] = 0;
4270                 switch(mailtype) {
4271                 case MES_LOCAL:
4272                         if (!strcasecmp(this_recp, "sysop")) {
4273                                 ++ret->num_room;
4274                                 strcpy(this_recp, config.c_aideroom);
4275                                 if (!IsEmptyStr(ret->recp_room)) {
4276                                         strcat(ret->recp_room, "|");
4277                                 }
4278                                 strcat(ret->recp_room, this_recp);
4279                         }
4280                         else if ( (!strncasecmp(this_recp, "room_", 5))
4281                                   && (!CtdlGetRoom(&tempQR, &this_recp_cooked[5])) ) {
4282
4283                                 /* Save room so we can restore it later */
4284                                 tempQR2 = CCC->room;
4285                                 CCC->room = tempQR;
4286
4287                                 /* Check permissions to send mail to this room */
4288                                 err = CtdlDoIHavePermissionToPostInThisRoom(
4289                                         errmsg,
4290                                         sizeof errmsg,
4291                                         RemoteIdentifier,
4292                                         Flags,
4293                                         0                       /* 0 = not a reply */
4294                                         );
4295                                 if (err)
4296                                 {
4297                                         ++ret->num_error;
4298                                         invalid = 1;
4299                                 }
4300                                 else {
4301                                         ++ret->num_room;
4302                                         if (!IsEmptyStr(ret->recp_room)) {
4303                                                 strcat(ret->recp_room, "|");
4304                                         }
4305                                         strcat(ret->recp_room, &this_recp_cooked[5]);
4306
4307                                         if (!IsEmptyStr(ret->recp_orgroom)) {
4308                                                 strcat(ret->recp_orgroom, "|");
4309                                         }
4310                                         strcat(ret->recp_orgroom, org_recp);
4311
4312                                 }
4313
4314                                 /* Restore room in case something needs it */
4315                                 CCC->room = tempQR2;
4316
4317                         }
4318                         else if (CtdlGetUser(&tempUS, this_recp) == 0) {
4319                                 ++ret->num_local;
4320                                 strcpy(this_recp, tempUS.fullname);
4321                                 if (!IsEmptyStr(ret->recp_local)) {
4322                                         strcat(ret->recp_local, "|");
4323                                 }
4324                                 strcat(ret->recp_local, this_recp);
4325                         }
4326                         else if (CtdlGetUser(&tempUS, this_recp_cooked) == 0) {
4327                                 ++ret->num_local;
4328                                 strcpy(this_recp, tempUS.fullname);
4329                                 if (!IsEmptyStr(ret->recp_local)) {
4330                                         strcat(ret->recp_local, "|");
4331                                 }
4332                                 strcat(ret->recp_local, this_recp);
4333                         }
4334                         else {
4335                                 ++ret->num_error;
4336                                 invalid = 1;
4337                         }
4338                         break;
4339                 case MES_INTERNET:
4340                         /* Yes, you're reading this correctly: if the target
4341                          * domain points back to the local system or an attached
4342                          * Citadel directory, the address is invalid.  That's
4343                          * because if the address were valid, we would have
4344                          * already translated it to a local address by now.
4345                          */
4346                         if (IsDirectory(this_recp, 0)) {
4347                                 ++ret->num_error;
4348                                 invalid = 1;
4349                         }
4350                         else {
4351                                 ++ret->num_internet;
4352                                 if (!IsEmptyStr(ret->recp_internet)) {
4353                                         strcat(ret->recp_internet, "|");
4354                                 }
4355                                 strcat(ret->recp_internet, this_recp);
4356                         }
4357                         break;
4358                 case MES_IGNET:
4359                         ++ret->num_ignet;
4360                         if (!IsEmptyStr(ret->recp_ignet)) {
4361                                 strcat(ret->recp_ignet, "|");
4362                         }
4363                         strcat(ret->recp_ignet, this_recp);
4364                         break;
4365                 case MES_ERROR:
4366                         ++ret->num_error;
4367                         invalid = 1;
4368                         break;
4369                 }
4370                 if (invalid) {
4371                         if (IsEmptyStr(errmsg)) {
4372                                 snprintf(append, sizeof append, "Invalid recipient: %s", this_recp);
4373                         }
4374                         else {
4375                                 snprintf(append, sizeof append, "%s", errmsg);
4376                         }
4377                         if ( (strlen(ret->errormsg) + strlen(append) + 3) < SIZ) {
4378                                 if (!IsEmptyStr(ret->errormsg)) {
4379                                         strcat(ret->errormsg, "; ");
4380                                 }
4381                                 strcat(ret->errormsg, append);
4382                         }
4383                 }
4384                 else {
4385                         if (IsEmptyStr(ret->display_recp)) {
4386                                 strcpy(append, this_recp);
4387                         }
4388                         else {
4389                                 snprintf(append, sizeof append, ", %s", this_recp);
4390                         }
4391                         if ( (strlen(ret->display_recp)+strlen(append)) < SIZ) {
4392                                 strcat(ret->display_recp, append);
4393                         }
4394                 }
4395         }
4396         free(org_recp);
4397
4398         if ((ret->num_local + ret->num_internet + ret->num_ignet +
4399              ret->num_room + ret->num_error) == 0) {
4400                 ret->num_error = (-1);
4401                 strcpy(ret->errormsg, "No recipients specified.");
4402         }
4403
4404         MSGM_syslog(LOG_DEBUG, "validate_recipients()\n");
4405         MSG_syslog(LOG_DEBUG, " local: %d <%s>\n", ret->num_local, ret->recp_local);
4406         MSG_syslog(LOG_DEBUG, "  room: %d <%s>\n", ret->num_room, ret->recp_room);
4407         MSG_syslog(LOG_DEBUG, "  inet: %d <%s>\n", ret->num_internet, ret->recp_internet);
4408         MSG_syslog(LOG_DEBUG, " ignet: %d <%s>\n", ret->num_ignet, ret->recp_ignet);
4409         MSG_syslog(LOG_DEBUG, " error: %d <%s>\n", ret->num_error, ret->errormsg);
4410
4411         free(recipients);
4412         return(ret);
4413 }
4414
4415
4416 /*
4417  * Destructor for struct recptypes
4418  */
4419 void free_recipients(struct recptypes *valid) {
4420
4421         if (valid == NULL) {
4422                 return;
4423         }
4424
4425         if (valid->recptypes_magic != RECPTYPES_MAGIC) {
4426                 struct CitContext *CCC = CC;
4427                 MSGM_syslog(LOG_EMERG, "Attempt to call free_recipients() on some other data type!\n");
4428                 abort();
4429         }
4430
4431         if (valid->errormsg != NULL)            free(valid->errormsg);
4432         if (valid->recp_local != NULL)          free(valid->recp_local);
4433         if (valid->recp_internet != NULL)       free(valid->recp_internet);
4434         if (valid->recp_ignet != NULL)          free(valid->recp_ignet);
4435         if (valid->recp_room != NULL)           free(valid->recp_room);
4436         if (valid->recp_orgroom != NULL)        free(valid->recp_orgroom);
4437         if (valid->display_recp != NULL)        free(valid->display_recp);
4438         if (valid->bounce_to != NULL)           free(valid->bounce_to);
4439         if (valid->envelope_from != NULL)       free(valid->envelope_from);
4440         if (valid->sending_room != NULL)        free(valid->sending_room);
4441         free(valid);
4442 }
4443
4444
4445
4446 /*
4447  * message entry  -  mode 0 (normal)
4448  */
4449 void cmd_ent0(char *entargs)
4450 {
4451         struct CitContext *CCC = CC;
4452         int post = 0;
4453         char recp[SIZ];
4454         char cc[SIZ];
4455         char bcc[SIZ];
4456         char supplied_euid[128];
4457         int anon_flag = 0;
4458         int format_type = 0;
4459         char newusername[256];
4460         char newuseremail[256];
4461         struct CtdlMessage *msg;
4462         int anonymous = 0;
4463         char errmsg[SIZ];
4464         int err = 0;
4465         struct recptypes *valid = NULL;
4466         struct recptypes *valid_to = NULL;
4467         struct recptypes *valid_cc = NULL;
4468         struct recptypes *valid_bcc = NULL;
4469         char subject[SIZ];
4470         int subject_required = 0;
4471         int do_confirm = 0;
4472         long msgnum;
4473         int i, j;
4474         char buf[256];
4475         int newuseremail_ok = 0;
4476         char references[SIZ];
4477         char *ptr;
4478
4479         unbuffer_output();
4480
4481         post = extract_int(entargs, 0);
4482         extract_token(recp, entargs, 1, '|', sizeof recp);
4483         anon_flag = extract_int(entargs, 2);
4484         format_type = extract_int(entargs, 3);
4485         extract_token(subject, entargs, 4, '|', sizeof subject);
4486         extract_token(newusername, entargs, 5, '|', sizeof newusername);
4487         do_confirm = extract_int(entargs, 6);
4488         extract_token(cc, entargs, 7, '|', sizeof cc);
4489         extract_token(bcc, entargs, 8, '|', sizeof bcc);
4490         switch(CC->room.QRdefaultview) {
4491         case VIEW_NOTES:
4492         case VIEW_WIKI:
4493                 extract_token(supplied_euid, entargs, 9, '|', sizeof supplied_euid);
4494                 break;
4495         default:
4496                 supplied_euid[0] = 0;
4497                 break;
4498         }
4499         extract_token(newuseremail, entargs, 10, '|', sizeof newuseremail);
4500         extract_token(references, entargs, 11, '|', sizeof references);
4501         for (ptr=references; *ptr != 0; ++ptr) {
4502                 if (*ptr == '!') *ptr = '|';
4503         }
4504
4505         /* first check to make sure the request is valid. */
4506
4507         err = CtdlDoIHavePermissionToPostInThisRoom(
4508                 errmsg,
4509                 sizeof errmsg,
4510                 NULL,
4511                 POST_LOGGED_IN,
4512                 (!IsEmptyStr(references))               /* is this a reply?  or a top-level post? */
4513                 );
4514         if (err)
4515         {
4516                 cprintf("%d %s\n", err, errmsg);
4517                 return;
4518         }
4519
4520         /* Check some other permission type things. */
4521
4522         if (IsEmptyStr(newusername)) {
4523                 strcpy(newusername, CCC->user.fullname);
4524         }
4525         if (  (CCC->user.axlevel < AxAideU)
4526               && (strcasecmp(newusername, CCC->user.fullname))
4527               && (strcasecmp(newusername, CCC->cs_inet_fn))
4528                 ) {
4529                 cprintf("%d You don't have permission to author messages as '%s'.\n",
4530                         ERROR + HIGHER_ACCESS_REQUIRED,
4531                         newusername
4532                         );
4533                 return;
4534         }
4535
4536
4537         if (IsEmptyStr(newuseremail)) {
4538                 newuseremail_ok = 1;
4539         }
4540
4541         if (!IsEmptyStr(newuseremail)) {
4542                 if (!strcasecmp(newuseremail, CCC->cs_inet_email)) {
4543                         newuseremail_ok = 1;
4544                 }
4545                 else if (!IsEmptyStr(CCC->cs_inet_other_emails)) {
4546                         j = num_tokens(CCC->cs_inet_other_emails, '|');
4547                         for (i=0; i<j; ++i) {
4548                                 extract_token(buf, CCC->cs_inet_other_emails, i, '|', sizeof buf);
4549                                 if (!strcasecmp(newuseremail, buf)) {
4550                                         newuseremail_ok = 1;
4551                                 }
4552                         }
4553                 }
4554         }
4555
4556         if (!newuseremail_ok) {
4557                 cprintf("%d You don't have permission to author messages as '%s'.\n",
4558                         ERROR + HIGHER_ACCESS_REQUIRED,
4559                         newuseremail
4560                         );
4561                 return;
4562         }
4563
4564         CCC->cs_flags |= CS_POSTING;
4565
4566         /* In mailbox rooms we have to behave a little differently --
4567          * make sure the user has specified at least one recipient.  Then
4568          * validate the recipient(s).  We do this for the Mail> room, as
4569          * well as any room which has the "Mailbox" view set - unless it
4570          * is the DRAFTS room which does not require recipients
4571          */
4572
4573         if ( (  ( (CCC->room.QRflags & QR_MAILBOX) && (!strcasecmp(&CCC->room.QRname[11], MAILROOM)) )
4574                 || ( (CCC->room.QRflags & QR_MAILBOX) && (CCC->curr_view == VIEW_MAILBOX) )
4575                      ) && (strcasecmp(&CCC->room.QRname[11], USERDRAFTROOM)) !=0 ) {
4576                 if (CCC->user.axlevel < AxProbU) {
4577                         strcpy(recp, "sysop");
4578                         strcpy(cc, "");
4579                         strcpy(bcc, "");
4580                 }
4581
4582                 valid_to = validate_recipients(recp, NULL, 0);
4583                 if (valid_to->num_error > 0) {
4584                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_to->errormsg);
4585                         free_recipients(valid_to);
4586                         return;
4587                 }
4588
4589                 valid_cc = validate_recipients(cc, NULL, 0);
4590                 if (valid_cc->num_error > 0) {
4591                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_cc->errormsg);
4592                         free_recipients(valid_to);
4593                         free_recipients(valid_cc);
4594                         return;
4595                 }
4596
4597                 valid_bcc = validate_recipients(bcc, NULL, 0);
4598                 if (valid_bcc->num_error > 0) {
4599                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_bcc->errormsg);
4600                         free_recipients(valid_to);
4601                         free_recipients(valid_cc);
4602                         free_recipients(valid_bcc);
4603                         return;
4604                 }
4605
4606                 /* Recipient required, but none were specified */
4607                 if ( (valid_to->num_error < 0) && (valid_cc->num_error < 0) && (valid_bcc->num_error < 0) ) {
4608                         free_recipients(valid_to);
4609                         free_recipients(valid_cc);
4610                         free_recipients(valid_bcc);
4611                         cprintf("%d At least one recipient is required.\n", ERROR + NO_SUCH_USER);
4612                         return;
4613                 }
4614
4615                 if (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0) {
4616                         if (CtdlCheckInternetMailPermission(&CCC->user)==0) {
4617                                 cprintf("%d You do not have permission "
4618                                         "to send Internet mail.\n",
4619                                         ERROR + HIGHER_ACCESS_REQUIRED);
4620                                 free_recipients(valid_to);
4621                                 free_recipients(valid_cc);
4622                                 free_recipients(valid_bcc);
4623                                 return;
4624                         }
4625                 }
4626
4627                 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)
4628                      && (CCC->user.axlevel < AxNetU) ) {
4629                         cprintf("%d Higher access required for network mail.\n",
4630                                 ERROR + HIGHER_ACCESS_REQUIRED);
4631                         free_recipients(valid_to);
4632                         free_recipients(valid_cc);
4633                         free_recipients(valid_bcc);
4634                         return;
4635                 }
4636
4637                 if ((RESTRICT_INTERNET == 1)
4638                     && (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0)
4639                     && ((CCC->user.flags & US_INTERNET) == 0)
4640                     && (!CCC->internal_pgm)) {
4641                         cprintf("%d You don't have access to Internet mail.\n",
4642                                 ERROR + HIGHER_ACCESS_REQUIRED);
4643                         free_recipients(valid_to);
4644                         free_recipients(valid_cc);
4645                         free_recipients(valid_bcc);
4646                         return;
4647                 }
4648
4649         }
4650
4651         /* Is this a room which has anonymous-only or anonymous-option? */
4652         anonymous = MES_NORMAL;
4653         if (CCC->room.QRflags & QR_ANONONLY) {
4654                 anonymous = MES_ANONONLY;
4655         }
4656         if (CCC->room.QRflags & QR_ANONOPT) {
4657                 if (anon_flag == 1) {   /* only if the user requested it */
4658                         anonymous = MES_ANONOPT;
4659                 }
4660         }
4661
4662         if ((CCC->room.QRflags & QR_MAILBOX) == 0) {
4663                 recp[0] = 0;
4664         }
4665
4666         /* Recommend to the client that the use of a message subject is
4667          * strongly recommended in this room, if either the SUBJECTREQ flag
4668          * is set, or if there is one or more Internet email recipients.
4669          */
4670         if (CCC->room.QRflags2 & QR2_SUBJECTREQ) subject_required = 1;
4671         if ((valid_to)  && (valid_to->num_internet > 0))        subject_required = 1;
4672         if ((valid_cc)  && (valid_cc->num_internet > 0))        subject_required = 1;
4673         if ((valid_bcc) && (valid_bcc->num_internet > 0))       subject_required = 1;
4674
4675         /* If we're only checking the validity of the request, return
4676          * success without creating the message.
4677          */
4678         if (post == 0) {
4679                 cprintf("%d %s|%d\n", CIT_OK,
4680                         ((valid_to != NULL) ? valid_to->display_recp : ""),
4681                         subject_required);
4682                 free_recipients(valid_to);
4683                 free_recipients(valid_cc);
4684                 free_recipients(valid_bcc);
4685                 return;
4686         }
4687
4688         /* We don't need these anymore because we'll do it differently below */
4689         free_recipients(valid_to);
4690         free_recipients(valid_cc);
4691         free_recipients(valid_bcc);
4692
4693         /* Read in the message from the client. */
4694         if (do_confirm) {
4695                 cprintf("%d send message\n", START_CHAT_MODE);
4696         } else {
4697                 cprintf("%d send message\n", SEND_LISTING);
4698         }
4699
4700         msg = CtdlMakeMessage(&CCC->user, recp, cc,
4701                               CCC->room.QRname, anonymous, format_type,
4702                               newusername, newuseremail, subject,
4703                               ((!IsEmptyStr(supplied_euid)) ? supplied_euid : NULL),
4704                               NULL, references);
4705
4706         /* Put together one big recipients struct containing to/cc/bcc all in
4707          * one.  This is for the envelope.
4708          */
4709         char *all_recps = malloc(SIZ * 3);
4710         strcpy(all_recps, recp);
4711         if (!IsEmptyStr(cc)) {
4712                 if (!IsEmptyStr(all_recps)) {
4713                         strcat(all_recps, ",");
4714                 }
4715                 strcat(all_recps, cc);
4716         }
4717         if (!IsEmptyStr(bcc)) {
4718                 if (!IsEmptyStr(all_recps)) {
4719                         strcat(all_recps, ",");
4720                 }
4721                 strcat(all_recps, bcc);
4722         }
4723         if (!IsEmptyStr(all_recps)) {
4724                 valid = validate_recipients(all_recps, NULL, 0);
4725         }
4726         else {
4727                 valid = NULL;
4728         }
4729         free(all_recps);
4730
4731         if ((valid != NULL) && (valid->num_room == 1))
4732         {
4733                 /* posting into an ML room? set the envelope from
4734                  * to the actual mail address so others get a valid
4735                  * reply-to-header.
4736                  */
4737                 msg->cm_fields['V'] = strdup(valid->recp_orgroom);
4738         }
4739
4740         if (msg != NULL) {
4741                 msgnum = CtdlSubmitMsg(msg, valid, "", QP_EADDR);
4742                 if (do_confirm) {
4743                         cprintf("%ld\n", msgnum);
4744
4745                         if (StrLength(CCC->StatusMessage) > 0) {
4746                                 cprintf("%s\n", ChrPtr(CCC->StatusMessage));
4747                         }
4748                         else if (msgnum >= 0L) {
4749                                 client_write(HKEY("Message accepted.\n"));
4750                         }
4751                         else {
4752                                 client_write(HKEY("Internal error.\n"));
4753                         }
4754
4755                         if (msg->cm_fields['E'] != NULL) {
4756                                 cprintf("%s\n", msg->cm_fields['E']);
4757                         } else {
4758                                 cprintf("\n");
4759                         }
4760                         cprintf("000\n");
4761                 }
4762
4763                 CtdlFreeMessage(msg);
4764         }
4765         if (valid != NULL) {
4766                 free_recipients(valid);
4767         }
4768         return;
4769 }
4770
4771
4772
4773 /*
4774  * API function to delete messages which match a set of criteria
4775  * (returns the actual number of messages deleted)
4776  */
4777 int CtdlDeleteMessages(char *room_name,         /* which room */
4778                        long *dmsgnums,          /* array of msg numbers to be deleted */
4779                        int num_dmsgnums,        /* number of msgs to be deleted, or 0 for "any" */
4780                        char *content_type       /* or "" for any.  regular expressions expected. */
4781         )
4782 {
4783         struct CitContext *CCC = CC;
4784         struct ctdlroom qrbuf;
4785         struct cdbdata *cdbfr;
4786         long *msglist = NULL;
4787         long *dellist = NULL;
4788         int num_msgs = 0;
4789         int i, j;
4790         int num_deleted = 0;
4791         int delete_this;
4792         struct MetaData smi;
4793         regex_t re;
4794         regmatch_t pm;
4795         int need_to_free_re = 0;
4796
4797         if (content_type) if (!IsEmptyStr(content_type)) {
4798                         regcomp(&re, content_type, 0);
4799                         need_to_free_re = 1;
4800                 }
4801         MSG_syslog(LOG_DEBUG, "CtdlDeleteMessages(%s, %d msgs, %s)\n",
4802                    room_name, num_dmsgnums, content_type);
4803
4804         /* get room record, obtaining a lock... */
4805         if (CtdlGetRoomLock(&qrbuf, room_name) != 0) {
4806                 MSG_syslog(LOG_ERR, "CtdlDeleteMessages(): Room <%s> not found\n",
4807                            room_name);
4808                 if (need_to_free_re) regfree(&re);
4809                 return (0);     /* room not found */
4810         }
4811         cdbfr = cdb_fetch(CDB_MSGLISTS, &qrbuf.QRnumber, sizeof(long));
4812
4813         if (cdbfr != NULL) {
4814                 dellist = malloc(cdbfr->len);
4815                 msglist = (long *) cdbfr->ptr;
4816                 cdbfr->ptr = NULL;      /* CtdlDeleteMessages() now owns this memory */
4817                 num_msgs = cdbfr->len / sizeof(long);
4818                 cdb_free(cdbfr);
4819         }
4820         if (num_msgs > 0) {
4821                 int have_contenttype = (content_type != NULL) && !IsEmptyStr(content_type);
4822                 int have_delmsgs = (num_dmsgnums == 0) || (dmsgnums == NULL);
4823                 int have_more_del = 1;
4824
4825                 num_msgs = sort_msglist(msglist, num_msgs);
4826                 if (num_dmsgnums > 1)
4827                         num_dmsgnums = sort_msglist(dmsgnums, num_dmsgnums);
4828 /*
4829                 {
4830                         StrBuf *dbg = NewStrBuf();
4831                         for (i = 0; i < num_dmsgnums; i++)
4832                                 StrBufAppendPrintf(dbg, ", %ld", dmsgnums[i]);
4833                         MSG_syslog(LOG_DEBUG, "Deleting before: %s", ChrPtr(dbg));
4834                         FreeStrBuf(&dbg);
4835                 }
4836 */
4837                 i = 0; j = 0;
4838                 while ((i < num_msgs) && (have_more_del)) {
4839                         delete_this = 0x00;
4840
4841
4842                         /* Set/clear a bit for each criterion */
4843
4844                         /* 0 messages in the list or a null list means that we are
4845                          * interested in deleting any messages which meet the other criteria.
4846                          */
4847                         if (have_delmsgs) {
4848                                 delete_this |= 0x01;
4849                         }
4850                         else {
4851                                 while ((i < num_msgs) && (msglist[i] < dmsgnums[j])) i++;
4852                                 if (msglist[i] == dmsgnums[j]) {
4853                                         delete_this |= 0x01;
4854                                 }
4855                                 j++;
4856                                 have_more_del = (j < num_dmsgnums);
4857                         }
4858
4859                         if (have_contenttype) {
4860                                 GetMetaData(&smi, msglist[i]);
4861                                 if (regexec(&re, smi.meta_content_type, 1, &pm, 0) == 0) {
4862                                         delete_this |= 0x02;
4863                                 }
4864                         } else {
4865                                 delete_this |= 0x02;
4866                         }
4867
4868                         /* Delete message only if all bits are set */
4869                         if (delete_this == 0x03) {
4870                                 dellist[num_deleted++] = msglist[i];
4871                                 msglist[i] = 0L;
4872                         }
4873                         i++;
4874                 }
4875 /*
4876                 {
4877                         StrBuf *dbg = NewStrBuf();
4878                         for (i = 0; i < num_deleted; i++)
4879                                 StrBufAppendPrintf(dbg, ", %ld", dellist[i]);
4880                         MSG_syslog(LOG_DEBUG, "Deleting: %s", ChrPtr(dbg));
4881                         FreeStrBuf(&dbg);
4882                 }
4883 */
4884                 num_msgs = sort_msglist(msglist, num_msgs);
4885                 cdb_store(CDB_MSGLISTS, &qrbuf.QRnumber, (int)sizeof(long),
4886                           msglist, (int)(num_msgs * sizeof(long)));
4887
4888                 if (num_msgs > 0)
4889                         qrbuf.QRhighest = msglist[num_msgs - 1];
4890                 else
4891                         qrbuf.QRhighest = 0;
4892         }
4893         CtdlPutRoomLock(&qrbuf);
4894
4895         /* Go through the messages we pulled out of the index, and decrement
4896          * their reference counts by 1.  If this is the only room the message
4897          * was in, the reference count will reach zero and the message will
4898          * automatically be deleted from the database.  We do this in a
4899          * separate pass because there might be plug-in hooks getting called,
4900          * and we don't want that happening during an S_ROOMS critical
4901          * section.
4902          */
4903         if (num_deleted) {
4904                 for (i=0; i<num_deleted; ++i) {
4905                         PerformDeleteHooks(qrbuf.QRname, dellist[i]);
4906                 }
4907                 AdjRefCountList(dellist, num_deleted, -1);
4908         }
4909         /* Now free the memory we used, and go away. */
4910         if (msglist != NULL) free(msglist);
4911         if (dellist != NULL) free(dellist);
4912         MSG_syslog(LOG_DEBUG, "%d message(s) deleted.\n", num_deleted);
4913         if (need_to_free_re) regfree(&re);
4914         return (num_deleted);
4915 }
4916
4917
4918
4919 /*
4920  * Check whether the current user has permission to delete messages from
4921  * the current room (returns 1 for yes, 0 for no)
4922  */
4923 int CtdlDoIHavePermissionToDeleteMessagesFromThisRoom(void) {
4924         int ra;
4925         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
4926         if (ra & UA_DELETEALLOWED) return(1);
4927         return(0);
4928 }
4929
4930
4931
4932
4933 /*
4934  * Delete message from current room
4935  */
4936 void cmd_dele(char *args)
4937 {
4938         int num_deleted;
4939         int i;
4940         char msgset[SIZ];
4941         char msgtok[32];
4942         long *msgs;
4943         int num_msgs = 0;
4944
4945         extract_token(msgset, args, 0, '|', sizeof msgset);
4946         num_msgs = num_tokens(msgset, ',');
4947         if (num_msgs < 1) {
4948                 cprintf("%d Nothing to do.\n", CIT_OK);
4949                 return;
4950         }
4951
4952         if (CtdlDoIHavePermissionToDeleteMessagesFromThisRoom() == 0) {
4953                 cprintf("%d Higher access required.\n",
4954                         ERROR + HIGHER_ACCESS_REQUIRED);
4955                 return;
4956         }
4957
4958         /*
4959          * Build our message set to be moved/copied
4960          */
4961         msgs = malloc(num_msgs * sizeof(long));
4962         for (i=0; i<num_msgs; ++i) {
4963                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4964                 msgs[i] = atol(msgtok);
4965         }
4966
4967         num_deleted = CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4968         free(msgs);
4969
4970         if (num_deleted) {
4971                 cprintf("%d %d message%s deleted.\n", CIT_OK,
4972                         num_deleted, ((num_deleted != 1) ? "s" : ""));
4973         } else {
4974                 cprintf("%d Message not found.\n", ERROR + MESSAGE_NOT_FOUND);
4975         }
4976 }
4977
4978
4979
4980
4981 /*
4982  * move or copy a message to another room
4983  */
4984 void cmd_move(char *args)
4985 {
4986         char msgset[SIZ];
4987         char msgtok[32];
4988         long *msgs;
4989         int num_msgs = 0;
4990
4991         char targ[ROOMNAMELEN];
4992         struct ctdlroom qtemp;
4993         int err;
4994         int is_copy = 0;
4995         int ra;
4996         int permit = 0;
4997         int i;
4998
4999         extract_token(msgset, args, 0, '|', sizeof msgset);
5000         num_msgs = num_tokens(msgset, ',');
5001         if (num_msgs < 1) {
5002                 cprintf("%d Nothing to do.\n", CIT_OK);
5003                 return;
5004         }
5005
5006         extract_token(targ, args, 1, '|', sizeof targ);
5007         convert_room_name_macros(targ, sizeof targ);
5008         targ[ROOMNAMELEN - 1] = 0;
5009         is_copy = extract_int(args, 2);
5010
5011         if (CtdlGetRoom(&qtemp, targ) != 0) {
5012                 cprintf("%d '%s' does not exist.\n", ERROR + ROOM_NOT_FOUND, targ);
5013                 return;
5014         }
5015
5016         if (!strcasecmp(qtemp.QRname, CC->room.QRname)) {
5017                 cprintf("%d Source and target rooms are the same.\n", ERROR + ALREADY_EXISTS);
5018                 return;
5019         }
5020
5021         CtdlGetUser(&CC->user, CC->curr_user);
5022         CtdlRoomAccess(&qtemp, &CC->user, &ra, NULL);
5023
5024         /* Check for permission to perform this operation.
5025          * Remember: "CC->room" is source, "qtemp" is target.
5026          */
5027         permit = 0;
5028
5029         /* Admins can move/copy */
5030         if (CC->user.axlevel >= AxAideU) permit = 1;
5031
5032         /* Room aides can move/copy */
5033         if (CC->user.usernum == CC->room.QRroomaide) permit = 1;
5034
5035         /* Permit move/copy from personal rooms */
5036         if ((CC->room.QRflags & QR_MAILBOX)
5037             && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
5038
5039         /* Permit only copy from public to personal room */
5040         if ( (is_copy)
5041              && (!(CC->room.QRflags & QR_MAILBOX))
5042              && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
5043
5044         /* Permit message removal from collaborative delete rooms */
5045         if (CC->room.QRflags2 & QR2_COLLABDEL) permit = 1;
5046
5047         /* Users allowed to post into the target room may move into it too. */
5048         if ((CC->room.QRflags & QR_MAILBOX) &&
5049             (qtemp.QRflags & UA_POSTALLOWED))  permit = 1;
5050
5051         /* User must have access to target room */
5052         if (!(ra & UA_KNOWN))  permit = 0;
5053
5054         if (!permit) {
5055                 cprintf("%d Higher access required.\n",
5056                         ERROR + HIGHER_ACCESS_REQUIRED);
5057                 return;
5058         }
5059
5060         /*
5061          * Build our message set to be moved/copied
5062          */
5063         msgs = malloc(num_msgs * sizeof(long));
5064         for (i=0; i<num_msgs; ++i) {
5065                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
5066                 msgs[i] = atol(msgtok);
5067         }
5068
5069         /*
5070          * Do the copy
5071          */
5072         err = CtdlSaveMsgPointersInRoom(targ, msgs, num_msgs, 1, NULL, 0);
5073         if (err != 0) {
5074                 cprintf("%d Cannot store message(s) in %s: error %d\n",
5075                         err, targ, err);
5076                 free(msgs);
5077                 return;
5078         }
5079
5080         /* Now delete the message from the source room,
5081          * if this is a 'move' rather than a 'copy' operation.
5082          */
5083         if (is_copy == 0) {
5084                 CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
5085         }
5086         free(msgs);
5087
5088         cprintf("%d Message(s) %s.\n", CIT_OK, (is_copy ? "copied" : "moved") );
5089 }
5090
5091
5092
5093 /*
5094  * GetMetaData()  -  Get the supplementary record for a message
5095  */
5096 void GetMetaData(struct MetaData *smibuf, long msgnum)
5097 {
5098
5099         struct cdbdata *cdbsmi;
5100         long TheIndex;
5101
5102         memset(smibuf, 0, sizeof(struct MetaData));
5103         smibuf->meta_msgnum = msgnum;
5104         smibuf->meta_refcount = 1;      /* Default reference count is 1 */
5105
5106         /* Use the negative of the message number for its supp record index */
5107         TheIndex = (0L - msgnum);
5108
5109         cdbsmi = cdb_fetch(CDB_MSGMAIN, &TheIndex, sizeof(long));
5110         if (cdbsmi == NULL) {
5111                 return;         /* record not found; go with defaults */
5112         }
5113         memcpy(smibuf, cdbsmi->ptr,
5114                ((cdbsmi->len > sizeof(struct MetaData)) ?
5115                 sizeof(struct MetaData) : cdbsmi->len));
5116         cdb_free(cdbsmi);
5117         return;
5118 }
5119
5120
5121 /*
5122  * PutMetaData()  -  (re)write supplementary record for a message
5123  */
5124 void PutMetaData(struct MetaData *smibuf)
5125 {
5126         long TheIndex;
5127
5128         /* Use the negative of the message number for the metadata db index */
5129         TheIndex = (0L - smibuf->meta_msgnum);
5130
5131         cdb_store(CDB_MSGMAIN,
5132                   &TheIndex, (int)sizeof(long),
5133                   smibuf, (int)sizeof(struct MetaData));
5134
5135 }
5136
5137 /*
5138  * AdjRefCount  -  submit an adjustment to the reference count for a message.
5139  *                 (These are just queued -- we actually process them later.)
5140  */
5141 void AdjRefCount(long msgnum, int incr)
5142 {
5143         struct CitContext *CCC = CC;
5144         struct arcq new_arcq;
5145         int rv = 0;
5146
5147         MSG_syslog(LOG_DEBUG, "AdjRefCount() msg %ld ref count delta %+d\n", msgnum, incr);
5148
5149         begin_critical_section(S_SUPPMSGMAIN);
5150         if (arcfp == NULL) {
5151                 arcfp = fopen(file_arcq, "ab+");
5152                 chown(file_arcq, CTDLUID, (-1));
5153                 chmod(file_arcq, 0600);
5154         }
5155         end_critical_section(S_SUPPMSGMAIN);
5156
5157         /* msgnum < 0 means that we're trying to close the file */
5158         if (msgnum < 0) {
5159                 MSGM_syslog(LOG_DEBUG, "Closing the AdjRefCount queue file\n");
5160                 begin_critical_section(S_SUPPMSGMAIN);
5161                 if (arcfp != NULL) {
5162                         fclose(arcfp);
5163                         arcfp = NULL;
5164                 }
5165                 end_critical_section(S_SUPPMSGMAIN);
5166                 return;
5167         }
5168
5169         /*
5170          * If we can't open the queue, perform the operation synchronously.
5171          */
5172         if (arcfp == NULL) {
5173                 TDAP_AdjRefCount(msgnum, incr);
5174                 return;
5175         }
5176
5177         new_arcq.arcq_msgnum = msgnum;
5178         new_arcq.arcq_delta = incr;
5179         rv = fwrite(&new_arcq, sizeof(struct arcq), 1, arcfp);
5180         if (rv == -1) {
5181                 MSG_syslog(LOG_EMERG, "Couldn't write Refcount Queue File %s: %s\n",
5182                            file_arcq,
5183                            strerror(errno));
5184         }
5185         fflush(arcfp);
5186
5187         return;
5188 }
5189
5190 void AdjRefCountList(long *msgnum, long nmsg, int incr)
5191 {
5192         struct CitContext *CCC = CC;
5193         long i, the_size, offset;
5194         struct arcq *new_arcq;
5195         int rv = 0;
5196
5197         MSG_syslog(LOG_DEBUG, "AdjRefCountList() msg %ld ref count delta %+d\n", nmsg, incr);
5198
5199         begin_critical_section(S_SUPPMSGMAIN);
5200         if (arcfp == NULL) {
5201                 arcfp = fopen(file_arcq, "ab+");
5202                 chown(file_arcq, CTDLUID, (-1));
5203                 chmod(file_arcq, 0600);
5204         }
5205         end_critical_section(S_SUPPMSGMAIN);
5206
5207         /*
5208          * If we can't open the queue, perform the operation synchronously.
5209          */
5210         if (arcfp == NULL) {
5211                 for (i = 0; i < nmsg; i++)
5212                         TDAP_AdjRefCount(msgnum[i], incr);
5213                 return;
5214         }
5215
5216         the_size = sizeof(struct arcq) * nmsg;
5217         new_arcq = malloc(the_size);
5218         for (i = 0; i < nmsg; i++) {
5219                 new_arcq[i].arcq_msgnum = msgnum[i];
5220                 new_arcq[i].arcq_delta = incr;
5221         }
5222         rv = 0;
5223         offset = 0;
5224         while ((rv >= 0) && (offset < the_size))
5225         {
5226                 rv = fwrite(new_arcq + offset, 1, the_size - offset, arcfp);
5227                 if (rv == -1) {
5228                         MSG_syslog(LOG_EMERG, "Couldn't write Refcount Queue File %s: %s\n",
5229                                    file_arcq,
5230                                    strerror(errno));
5231                 }
5232                 else {
5233                         offset += rv;
5234                 }
5235         }
5236         free(new_arcq);
5237         fflush(arcfp);
5238
5239         return;
5240 }
5241
5242
5243 /*
5244  * TDAP_ProcessAdjRefCountQueue()
5245  *
5246  * Process the queue of message count adjustments that was created by calls
5247  * to AdjRefCount() ... by reading the queue and calling TDAP_AdjRefCount()
5248  * for each one.  This should be an "off hours" operation.
5249  */
5250 int TDAP_ProcessAdjRefCountQueue(void)
5251 {
5252         struct CitContext *CCC = CC;
5253         char file_arcq_temp[PATH_MAX];
5254         int r;
5255         FILE *fp;
5256         struct arcq arcq_rec;
5257         int num_records_processed = 0;
5258
5259         snprintf(file_arcq_temp, sizeof file_arcq_temp, "%s.%04x", file_arcq, rand());
5260
5261         begin_critical_section(S_SUPPMSGMAIN);
5262         if (arcfp != NULL) {
5263                 fclose(arcfp);
5264                 arcfp = NULL;
5265         }
5266
5267         r = link(file_arcq, file_arcq_temp);
5268         if (r != 0) {
5269                 MSG_syslog(LOG_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
5270                 end_critical_section(S_SUPPMSGMAIN);
5271                 return(num_records_processed);
5272         }
5273
5274         unlink(file_arcq);
5275         end_critical_section(S_SUPPMSGMAIN);
5276
5277         fp = fopen(file_arcq_temp, "rb");
5278         if (fp == NULL) {
5279                 MSG_syslog(LOG_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
5280                 return(num_records_processed);
5281         }
5282
5283         while (fread(&arcq_rec, sizeof(struct arcq), 1, fp) == 1) {
5284                 TDAP_AdjRefCount(arcq_rec.arcq_msgnum, arcq_rec.arcq_delta);
5285                 ++num_records_processed;
5286         }
5287
5288         fclose(fp);
5289         r = unlink(file_arcq_temp);
5290         if (r != 0) {
5291                 MSG_syslog(LOG_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
5292         }
5293
5294         return(num_records_processed);
5295 }
5296
5297
5298
5299 /*
5300  * TDAP_AdjRefCount  -  adjust the reference count for a message.
5301  *                      This one does it "for real" because it's called by
5302  *                      the autopurger function that processes the queue
5303  *                      created by AdjRefCount().   If a message's reference
5304  *                      count becomes zero, we also delete the message from
5305  *                      disk and de-index it.
5306  */
5307 void TDAP_AdjRefCount(long msgnum, int incr)
5308 {
5309         struct CitContext *CCC = CC;
5310
5311         struct MetaData smi;
5312         long delnum;
5313
5314         /* This is a *tight* critical section; please keep it that way, as
5315          * it may get called while nested in other critical sections.
5316          * Complicating this any further will surely cause deadlock!
5317          */
5318         begin_critical_section(S_SUPPMSGMAIN);
5319         GetMetaData(&smi, msgnum);
5320         smi.meta_refcount += incr;
5321         PutMetaData(&smi);
5322         end_critical_section(S_SUPPMSGMAIN);
5323         MSG_syslog(LOG_DEBUG, "TDAP_AdjRefCount() msg %ld ref count delta %+d, is now %d\n",
5324                    msgnum, incr, smi.meta_refcount
5325                 );
5326
5327         /* If the reference count is now zero, delete the message
5328          * (and its supplementary record as well).
5329          */
5330         if (smi.meta_refcount == 0) {
5331                 MSG_syslog(LOG_DEBUG, "Deleting message <%ld>\n", msgnum);
5332
5333                 /* Call delete hooks with NULL room to show it has gone altogether */
5334                 PerformDeleteHooks(NULL, msgnum);
5335
5336                 /* Remove from message base */
5337                 delnum = msgnum;
5338                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
5339                 cdb_delete(CDB_BIGMSGS, &delnum, (int)sizeof(long));
5340
5341                 /* Remove metadata record */
5342                 delnum = (0L - msgnum);
5343                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
5344         }
5345
5346 }
5347
5348 /*
5349  * Write a generic object to this room
5350  *
5351  * Note: this could be much more efficient.  Right now we use two temporary
5352  * files, and still pull the message into memory as with all others.
5353  */
5354 void CtdlWriteObject(char *req_room,                    /* Room to stuff it in */
5355                      char *content_type,                /* MIME type of this object */
5356                      char *raw_message,         /* Data to be written */
5357                      off_t raw_length,          /* Size of raw_message */
5358                      struct ctdluser *is_mailbox,       /* Mailbox room? */
5359                      int is_binary,                     /* Is encoding necessary? */
5360                      int is_unique,                     /* Del others of this type? */
5361                      unsigned int flags         /* Internal save flags */
5362         )
5363 {
5364         struct CitContext *CCC = CC;
5365         struct ctdlroom qrbuf;
5366         char roomname[ROOMNAMELEN];
5367         struct CtdlMessage *msg;
5368         char *encoded_message = NULL;
5369
5370         if (is_mailbox != NULL) {
5371                 CtdlMailboxName(roomname, sizeof roomname, is_mailbox, req_room);
5372         }
5373         else {
5374                 safestrncpy(roomname, req_room, sizeof(roomname));
5375         }
5376
5377         MSG_syslog(LOG_DEBUG, "Raw length is %ld\n", (long)raw_length);
5378
5379         if (is_binary) {
5380                 encoded_message = malloc((size_t) (((raw_length * 134) / 100) + 4096 ) );
5381         }
5382         else {
5383                 encoded_message = malloc((size_t)(raw_length + 4096));
5384         }
5385
5386         sprintf(encoded_message, "Content-type: %s\n", content_type);
5387
5388         if (is_binary) {
5389                 sprintf(&encoded_message[strlen(encoded_message)],
5390                         "Content-transfer-encoding: base64\n\n"
5391                         );
5392         }
5393         else {
5394                 sprintf(&encoded_message[strlen(encoded_message)],
5395                         "Content-transfer-encoding: 7bit\n\n"
5396                         );
5397         }
5398
5399         if (is_binary) {
5400                 CtdlEncodeBase64(
5401                         &encoded_message[strlen(encoded_message)],
5402                         raw_message,
5403                         (int)raw_length,
5404                         0
5405                         );
5406         }
5407         else {
5408                 memcpy(
5409                         &encoded_message[strlen(encoded_message)],
5410                         raw_message,
5411                         (int)(raw_length+1)
5412                         );
5413         }
5414
5415         MSGM_syslog(LOG_DEBUG, "Allocating\n");
5416         msg = malloc(sizeof(struct CtdlMessage));
5417         memset(msg, 0, sizeof(struct CtdlMessage));
5418         msg->cm_magic = CTDLMESSAGE_MAGIC;
5419         msg->cm_anon_type = MES_NORMAL;
5420         msg->cm_format_type = 4;
5421         msg->cm_fields['A'] = strdup(CCC->user.fullname);
5422         msg->cm_fields['O'] = strdup(req_room);
5423         msg->cm_fields['N'] = strdup(config.c_nodename);
5424         msg->cm_fields['H'] = strdup(config.c_humannode);
5425         msg->cm_flags = flags;
5426
5427         msg->cm_fields['M'] = encoded_message;
5428
5429         /* Create the requested room if we have to. */
5430         if (CtdlGetRoom(&qrbuf, roomname) != 0) {
5431                 CtdlCreateRoom(roomname,
5432                                ( (is_mailbox != NULL) ? 5 : 3 ),
5433                                "", 0, 1, 0, VIEW_BBS);
5434         }
5435         /* If the caller specified this object as unique, delete all
5436          * other objects of this type that are currently in the room.
5437          */
5438         if (is_unique) {
5439                 MSG_syslog(LOG_DEBUG, "Deleted %d other msgs of this type\n",
5440                            CtdlDeleteMessages(roomname, NULL, 0, content_type)
5441                         );
5442         }
5443         /* Now write the data */
5444         CtdlSubmitMsg(msg, NULL, roomname, 0);
5445         CtdlFreeMessage(msg);
5446 }
5447
5448
5449
5450
5451
5452
5453 void CtdlGetSysConfigBackend(long msgnum, void *userdata) {
5454         config_msgnum = msgnum;
5455 }
5456
5457
5458 char *CtdlGetSysConfig(char *sysconfname) {
5459         char hold_rm[ROOMNAMELEN];
5460         long msgnum;
5461         char *conf;
5462         struct CtdlMessage *msg;
5463         char buf[SIZ];
5464
5465         strcpy(hold_rm, CC->room.QRname);
5466         if (CtdlGetRoom(&CC->room, SYSCONFIGROOM) != 0) {
5467                 CtdlGetRoom(&CC->room, hold_rm);
5468                 return NULL;
5469         }
5470
5471
5472         /* We want the last (and probably only) config in this room */
5473         begin_critical_section(S_CONFIG);
5474         config_msgnum = (-1L);
5475         CtdlForEachMessage(MSGS_LAST, 1, NULL, sysconfname, NULL,
5476                            CtdlGetSysConfigBackend, NULL);
5477         msgnum = config_msgnum;
5478         end_critical_section(S_CONFIG);
5479
5480         if (msgnum < 0L) {
5481                 conf = NULL;
5482         }
5483         else {
5484                 msg = CtdlFetchMessage(msgnum, 1);
5485                 if (msg != NULL) {
5486                         conf = strdup(msg->cm_fields['M']);
5487                         CtdlFreeMessage(msg);
5488                 }
5489                 else {
5490                         conf = NULL;
5491                 }
5492         }
5493
5494         CtdlGetRoom(&CC->room, hold_rm);
5495
5496         if (conf != NULL) do {
5497                         extract_token(buf, conf, 0, '\n', sizeof buf);
5498                         strcpy(conf, &conf[strlen(buf)+1]);
5499                 } while ( (!IsEmptyStr(conf)) && (!IsEmptyStr(buf)) );
5500
5501         return(conf);
5502 }
5503
5504
5505 void CtdlPutSysConfig(char *sysconfname, char *sysconfdata) {
5506         CtdlWriteObject(SYSCONFIGROOM, sysconfname, sysconfdata, (strlen(sysconfdata)+1), NULL, 0, 1, 0);
5507 }
5508
5509
5510 /*
5511  * Determine whether a given Internet address belongs to the current user
5512  */
5513 int CtdlIsMe(char *addr, int addr_buf_len)
5514 {
5515         struct recptypes *recp;
5516         int i;
5517
5518         recp = validate_recipients(addr, NULL, 0);
5519         if (recp == NULL) return(0);
5520
5521         if (recp->num_local == 0) {
5522                 free_recipients(recp);
5523                 return(0);
5524         }
5525
5526         for (i=0; i<recp->num_local; ++i) {
5527                 extract_token(addr, recp->recp_local, i, '|', addr_buf_len);
5528                 if (!strcasecmp(addr, CC->user.fullname)) {
5529                         free_recipients(recp);
5530                         return(1);
5531                 }
5532         }
5533
5534         free_recipients(recp);
5535         return(0);
5536 }
5537
5538
5539 /*
5540  * Citadel protocol command to do the same
5541  */
5542 void cmd_isme(char *argbuf) {
5543         char addr[256];
5544
5545         if (CtdlAccessCheck(ac_logged_in)) return;
5546         extract_token(addr, argbuf, 0, '|', sizeof addr);
5547
5548         if (CtdlIsMe(addr, sizeof addr)) {
5549                 cprintf("%d %s\n", CIT_OK, addr);
5550         }
5551         else {
5552                 cprintf("%d Not you.\n", ERROR + ILLEGAL_VALUE);
5553         }
5554
5555 }
5556
5557
5558 /*****************************************************************************/
5559 /*                      MODULE INITIALIZATION STUFF                          */
5560 /*****************************************************************************/
5561 void SetMessageDebugEnabled(const int n)
5562 {
5563         MessageDebugEnabled = n;
5564 }
5565 CTDL_MODULE_INIT(msgbase)
5566 {
5567         if (!threading) {
5568                 CtdlRegisterDebugFlagHook(HKEY("messages"), SetMessageDebugEnabled, &MessageDebugEnabled);
5569
5570                 CtdlRegisterProtoHook(cmd_msgs, "MSGS", "Output a list of messages in the current room");
5571                 CtdlRegisterProtoHook(cmd_msg0, "MSG0", "Output a message in plain text format");
5572                 CtdlRegisterProtoHook(cmd_msg2, "MSG2", "Output a message in RFC822 format");
5573                 CtdlRegisterProtoHook(cmd_msg3, "MSG3", "Output a message in raw format (deprecated)");
5574                 CtdlRegisterProtoHook(cmd_msg4, "MSG4", "Output a message in the client's preferred format");
5575                 CtdlRegisterProtoHook(cmd_msgp, "MSGP", "Select preferred format for MSG4 output");
5576                 CtdlRegisterProtoHook(cmd_opna, "OPNA", "Open an attachment for download");
5577                 CtdlRegisterProtoHook(cmd_dlat, "DLAT", "Download an attachment");
5578                 CtdlRegisterProtoHook(cmd_ent0, "ENT0", "Enter a message");
5579                 CtdlRegisterProtoHook(cmd_dele, "DELE", "Delete a message");
5580                 CtdlRegisterProtoHook(cmd_move, "MOVE", "Move or copy a message to another room");
5581                 CtdlRegisterProtoHook(cmd_isme, "ISME", "Determine whether an email address belongs to a user");
5582         }
5583
5584         /* return our Subversion id for the Log */
5585         return "msgbase";
5586 }