citadel/msgbase.c

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