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