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 mid[100];
1627         char datestamp[100];
1628
1629         CtdlLogPrintf(CTDL_DEBUG, "CtdlOutputPreLoadedMsg(TheMessage=%s, %d, %d, %d, %d\n",
1630                 ((TheMessage == NULL) ? "NULL" : "not null"),
1631                 mode, headers_only, do_proto, crlf);
1632
1633         strcpy(mid, "unknown");
1634         nl = (crlf ? "\r\n" : "\n");
1635
1636         if (!is_valid_message(TheMessage)) {
1637                 CtdlLogPrintf(CTDL_ERR,
1638                         "ERROR: invalid preloaded message for output\n");
1639                 cit_backtrace ();
1640                 return(om_no_such_msg);
1641         }
1642
1643         /* Are we downloading a MIME component? */
1644         if (mode == MT_DOWNLOAD) {
1645                 if (TheMessage->cm_format_type != FMT_RFC822) {
1646                         if (do_proto)
1647                                 cprintf("%d This is not a MIME message.\n",
1648                                 ERROR + ILLEGAL_VALUE);
1649                 } else if (CC->download_fp != NULL) {
1650                         if (do_proto) cprintf(
1651                                 "%d You already have a download open.\n",
1652                                 ERROR + RESOURCE_BUSY);
1653                 } else {
1654                         /* Parse the message text component */
1655                         mptr = TheMessage->cm_fields['M'];
1656                         mime_parser(mptr, NULL, *mime_download, NULL, NULL, NULL, 0);
1657                         /* If there's no file open by this time, the requested
1658                          * section wasn't found, so print an error
1659                          */
1660                         if (CC->download_fp == NULL) {
1661                                 if (do_proto) cprintf(
1662                                         "%d Section %s not found.\n",
1663                                         ERROR + FILE_NOT_FOUND,
1664                                         CC->download_desired_section);
1665                         }
1666                 }
1667                 return((CC->download_fp != NULL) ? om_ok : om_mime_error);
1668         }
1669
1670         /* MT_SPEW_SECTION is like MT_DOWNLOAD except it outputs the whole MIME part
1671          * in a single server operation instead of opening a download file.
1672          */
1673         if (mode == MT_SPEW_SECTION) {
1674                 if (TheMessage->cm_format_type != FMT_RFC822) {
1675                         if (do_proto)
1676                                 cprintf("%d This is not a MIME message.\n",
1677                                 ERROR + ILLEGAL_VALUE);
1678                 } else {
1679                         /* Parse the message text component */
1680                         int found_it = 0;
1681
1682                         mptr = TheMessage->cm_fields['M'];
1683                         mime_parser(mptr, NULL, *mime_spew_section, NULL, NULL, (void *)&found_it, 0);
1684                         /* If section wasn't found, print an error
1685                          */
1686                         if (!found_it) {
1687                                 if (do_proto) cprintf(
1688                                         "%d Section %s not found.\n",
1689                                         ERROR + FILE_NOT_FOUND,
1690                                         CC->download_desired_section);
1691                         }
1692                 }
1693                 return((CC->download_fp != NULL) ? om_ok : om_mime_error);
1694         }
1695
1696         /* now for the user-mode message reading loops */
1697         if (do_proto) cprintf("%d msg:\n", LISTING_FOLLOWS);
1698
1699         /* Does the caller want to skip the headers? */
1700         if (headers_only == HEADERS_NONE) goto START_TEXT;
1701
1702         /* Tell the client which format type we're using. */
1703         if ( (mode == MT_CITADEL) && (do_proto) ) {
1704                 cprintf("type=%d\n", TheMessage->cm_format_type);
1705         }
1706
1707         /* nhdr=yes means that we're only displaying headers, no body */
1708         if ( (TheMessage->cm_anon_type == MES_ANONONLY)
1709            && (mode == MT_CITADEL)
1710            && (do_proto)
1711            ) {
1712                 cprintf("nhdr=yes\n");
1713         }
1714
1715         /* begin header processing loop for Citadel message format */
1716
1717         if ((mode == MT_CITADEL) || (mode == MT_MIME)) {
1718
1719                 safestrncpy(display_name, "<unknown>", sizeof display_name);
1720                 if (TheMessage->cm_fields['A']) {
1721                         strcpy(buf, TheMessage->cm_fields['A']);
1722                         if (TheMessage->cm_anon_type == MES_ANONONLY) {
1723                                 safestrncpy(display_name, "****", sizeof display_name);
1724                         }
1725                         else if (TheMessage->cm_anon_type == MES_ANONOPT) {
1726                                 safestrncpy(display_name, "anonymous", sizeof display_name);
1727                         }
1728                         else {
1729                                 safestrncpy(display_name, buf, sizeof display_name);
1730                         }
1731                         if ((is_room_aide())
1732                             && ((TheMessage->cm_anon_type == MES_ANONONLY)
1733                              || (TheMessage->cm_anon_type == MES_ANONOPT))) {
1734                                 size_t tmp = strlen(display_name);
1735                                 snprintf(&display_name[tmp],
1736                                          sizeof display_name - tmp,
1737                                          " [%s]", buf);
1738                         }
1739                 }
1740
1741                 /* Don't show Internet address for users on the
1742                  * local Citadel network.
1743                  */
1744                 suppress_f = 0;
1745                 if (TheMessage->cm_fields['N'] != NULL)
1746                    if (!IsEmptyStr(TheMessage->cm_fields['N']))
1747                       if (haschar(TheMessage->cm_fields['N'], '.') == 0) {
1748                         suppress_f = 1;
1749                 }
1750
1751                 /* Now spew the header fields in the order we like them. */
1752                 safestrncpy(allkeys, FORDER, sizeof allkeys);
1753                 for (i=0; i<strlen(allkeys); ++i) {
1754                         k = (int) allkeys[i];
1755                         if (k != 'M') {
1756                                 if ( (TheMessage->cm_fields[k] != NULL)
1757                                    && (msgkeys[k] != NULL) ) {
1758                                         if (k == 'A') {
1759                                                 if (do_proto) cprintf("%s=%s\n",
1760                                                         msgkeys[k],
1761                                                         display_name);
1762                                         }
1763                                         else if ((k == 'F') && (suppress_f)) {
1764                                                 /* do nothing */
1765                                         }
1766                                         /* Masquerade display name if needed */
1767                                         else {
1768                                                 if (do_proto) cprintf("%s=%s\n",
1769                                                         msgkeys[k],
1770                                                         TheMessage->cm_fields[k]
1771                                         );
1772                                         }
1773                                 }
1774                         }
1775                 }
1776
1777         }
1778
1779         /* begin header processing loop for RFC822 transfer format */
1780
1781         strcpy(suser, "");
1782         strcpy(luser, "");
1783         strcpy(fuser, "");
1784         strcpy(snode, NODENAME);
1785         if (mode == MT_RFC822) {
1786                 for (i = 0; i < 256; ++i) {
1787                         if (TheMessage->cm_fields[i]) {
1788                                 mptr = mpptr = TheMessage->cm_fields[i];
1789
1790                                 if (i == 'A') {
1791                                         safestrncpy(luser, mptr, sizeof luser);
1792                                         safestrncpy(suser, mptr, sizeof suser);
1793                                 }
1794                                 else if (i == 'Y') {
1795                                         if ((flags & QP_EADDR) != 0)
1796                                                 mptr = qp_encode_email_addrs(mptr);
1797                                         cprintf("CC: %s%s", mptr, nl);
1798                                 }
1799                                 else if (i == 'P') {
1800                                         cprintf("Return-Path: %s%s", mptr, nl);
1801                                 }
1802                                 else if (i == 'L') {
1803                                         cprintf("List-ID: %s%s", mptr, nl);
1804                                 }
1805                                 else if (i == 'V') {
1806                                         if ((flags & QP_EADDR) != 0)
1807                                                 mptr = qp_encode_email_addrs(mptr);
1808                                         cprintf("Envelope-To: %s%s", mptr, nl);
1809                                 }
1810                                 else if (i == 'U') {
1811                                         cprintf("Subject: %s%s", mptr, nl);
1812                                         subject_found = 1;
1813                                 }
1814                                 else if (i == 'I')
1815                                         safestrncpy(mid, mptr, sizeof mid);
1816                                 else if (i == 'F')
1817                                         safestrncpy(fuser, mptr, sizeof fuser);
1818                                 /* else if (i == 'O')
1819                                         cprintf("X-Citadel-Room: %s%s",
1820                                                 mptr, nl); */
1821                                 else if (i == 'N')
1822                                         safestrncpy(snode, mptr, sizeof snode);
1823                                 else if (i == 'R')
1824                                 {
1825                                         if (haschar(mptr, '@') == 0)
1826                                         {
1827                                                 cprintf("To: %s@%s", mptr, config.c_fqdn);
1828                                                 cprintf("%s", nl);
1829                                         }
1830                                         else
1831                                         {
1832                                                 if ((flags & QP_EADDR) != 0)
1833                                                         mptr = qp_encode_email_addrs(mptr);
1834                                                 cprintf("To: %s", mptr);
1835                                                 cprintf("%s", nl);
1836                                         }
1837                                 }
1838                                 else if (i == 'T') {
1839                                         datestring(datestamp, sizeof datestamp,
1840                                                 atol(mptr), DATESTRING_RFC822);
1841                                         cprintf("Date: %s%s", datestamp, nl);
1842                                 }
1843                                 else if (i == 'W') {
1844                                         cprintf("References: ");
1845                                         k = num_tokens(mptr, '|');
1846                                         for (j=0; j<k; ++j) {
1847                                                 extract_token(buf, mptr, j, '|', sizeof buf);
1848                                                 cprintf("<%s>", buf);
1849                                                 if (j == (k-1)) {
1850                                                         cprintf("%s", nl);
1851                                                 }
1852                                                 else {
1853                                                         cprintf(" ");
1854                                                 }
1855                                         }
1856                                 }
1857                                 if (mptr != mpptr)
1858                                         free (mptr);
1859                         }
1860                 }
1861                 if (subject_found == 0) {
1862                         cprintf("Subject: (no subject)%s", nl);
1863                 }
1864         }
1865
1866         for (i=0; !IsEmptyStr(&suser[i]); ++i) {
1867                 suser[i] = tolower(suser[i]);
1868                 if (!isalnum(suser[i])) suser[i]='_';
1869         }
1870
1871         if (mode == MT_RFC822) {
1872                 if (!strcasecmp(snode, NODENAME)) {
1873                         safestrncpy(snode, FQDN, sizeof snode);
1874                 }
1875
1876                 /* Construct a fun message id */
1877                 cprintf("Message-ID: <%s", mid);/// todo: this possibly breaks threadding mails.
1878                 if (strchr(mid, '@')==NULL) {
1879                         cprintf("@%s", snode);
1880                 }
1881                 cprintf(">%s", nl);
1882
1883                 if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONONLY)) {
1884                         cprintf("From: \"----\" <x@x.org>%s", nl);
1885                 }
1886                 else if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONOPT)) {
1887                         cprintf("From: \"anonymous\" <x@x.org>%s", nl);
1888                 }
1889                 else if (!IsEmptyStr(fuser)) {
1890                         cprintf("From: \"%s\" <%s>%s", luser, fuser, nl);
1891                 }
1892                 else {
1893                         cprintf("From: \"%s\" <%s@%s>%s", luser, suser, snode, nl);
1894                 }
1895
1896                 /* Blank line signifying RFC822 end-of-headers */
1897                 if (TheMessage->cm_format_type != FMT_RFC822) {
1898                         cprintf("%s", nl);
1899                 }
1900         }
1901
1902         /* end header processing loop ... at this point, we're in the text */
1903 START_TEXT:
1904         if (headers_only == HEADERS_FAST) goto DONE;
1905         mptr = TheMessage->cm_fields['M'];
1906
1907         /* Tell the client about the MIME parts in this message */
1908         if (TheMessage->cm_format_type == FMT_RFC822) {
1909                 if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
1910                         memset(&ma, 0, sizeof(struct ma_info));
1911                         mime_parser(mptr, NULL,
1912                                 (do_proto ? *list_this_part : NULL),
1913                                 (do_proto ? *list_this_pref : NULL),
1914                                 (do_proto ? *list_this_suff : NULL),
1915                                 (void *)&ma, 0);
1916                 }
1917                 else if (mode == MT_RFC822) {   /* unparsed RFC822 dump */
1918                         char *start_of_text = NULL;
1919                         start_of_text = strstr(mptr, "\n\r\n");
1920                         if (start_of_text == NULL) start_of_text = strstr(mptr, "\n\n");
1921                         if (start_of_text == NULL) start_of_text = mptr;
1922                         ++start_of_text;
1923                         start_of_text = strstr(start_of_text, "\n");
1924                         ++start_of_text;
1925
1926                         char outbuf[1024];
1927                         int outlen = 0;
1928                         int nllen = strlen(nl);
1929                         prev_ch = 0;
1930                         while (ch=*mptr, ch!=0) {
1931                                 if (ch==13) {
1932                                         /* do nothing */
1933                                 }
1934                                 else {
1935                                         if (
1936                                                 ((headers_only == HEADERS_NONE) && (mptr >= start_of_text))
1937                                            ||   ((headers_only == HEADERS_ONLY) && (mptr < start_of_text))
1938                                            ||   ((headers_only != HEADERS_NONE) && (headers_only != HEADERS_ONLY))
1939                                         ) {
1940                                                 if (ch == 10) {
1941                                                         sprintf(&outbuf[outlen], "%s", nl);
1942                                                         outlen += nllen;
1943                                                 }
1944                                                 else {
1945                                                         outbuf[outlen++] = ch;
1946                                                 }
1947                                         }
1948                                 }
1949                                 if (flags & ESC_DOT)
1950                                 {
1951                                         if ((prev_ch == 10) && (ch == '.') && ((*(mptr+1) == 13) || (*(mptr+1) == 10)))
1952                                         {
1953                                                 outbuf[outlen++] = '.';
1954                                         }
1955                                 }
1956                                 prev_ch = ch;
1957                                 ++mptr;
1958                                 if (outlen > 1000) {
1959                                         client_write(outbuf, outlen);
1960                                         outlen = 0;
1961                                 }
1962                         }
1963                         if (outlen > 0) {
1964                                 client_write(outbuf, outlen);
1965                                 outlen = 0;
1966                         }
1967
1968                         goto DONE;
1969                 }
1970         }
1971
1972         if (headers_only == HEADERS_ONLY) {
1973                 goto DONE;
1974         }
1975
1976         /* signify start of msg text */
1977         if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
1978                 if (do_proto) cprintf("text\n");
1979         }
1980
1981         /* If the format type on disk is 1 (fixed-format), then we want
1982          * everything to be output completely literally ... regardless of
1983          * what message transfer format is in use.
1984          */
1985         if (TheMessage->cm_format_type == FMT_FIXED) {
1986                 int buflen;
1987                 if (mode == MT_MIME) {
1988                         cprintf("Content-type: text/plain\n\n");
1989                 }
1990                 *buf = '\0';
1991                 buflen = 0;
1992                 while (ch = *mptr++, ch > 0) {
1993                         if (ch == 13)
1994                                 ch = 10;
1995                         if ((ch == 10) || (buflen > 250)) {
1996                                 buf[buflen] = '\0';
1997                                 cprintf("%s%s", buf, nl);
1998                                 *buf = '\0';
1999                                 buflen = 0;
2000                         } else {
2001                                 buf[buflen] = ch;
2002                                 buflen++;
2003                         }
2004                 }
2005                 buf[buflen] = '\0';
2006                 if (!IsEmptyStr(buf))
2007                         cprintf("%s%s", buf, nl);
2008         }
2009
2010         /* If the message on disk is format 0 (Citadel vari-format), we
2011          * output using the formatter at 80 columns.  This is the final output
2012          * form if the transfer format is RFC822, but if the transfer format
2013          * is Citadel proprietary, it'll still work, because the indentation
2014          * for new paragraphs is correct and the client will reformat the
2015          * message to the reader's screen width.
2016          */
2017         if (TheMessage->cm_format_type == FMT_CITADEL) {
2018                 if (mode == MT_MIME) {
2019                         cprintf("Content-type: text/x-citadel-variformat\n\n");
2020                 }
2021                 memfmout(mptr, 0, nl);
2022         }
2023
2024         /* If the message on disk is format 4 (MIME), we've gotta hand it
2025          * off to the MIME parser.  The client has already been told that
2026          * this message is format 1 (fixed format), so the callback function
2027          * we use will display those parts as-is.
2028          */
2029         if (TheMessage->cm_format_type == FMT_RFC822) {
2030                 memset(&ma, 0, sizeof(struct ma_info));
2031
2032                 if (mode == MT_MIME) {
2033                         ma.use_fo_hooks = 0;
2034                         strcpy(ma.chosen_part, "1");
2035                         ma.chosen_pref = 9999;
2036                         mime_parser(mptr, NULL,
2037                                 *choose_preferred, *fixed_output_pre,
2038                                 *fixed_output_post, (void *)&ma, 0);
2039                         mime_parser(mptr, NULL,
2040                                 *output_preferred, NULL, NULL, (void *)&ma, CC->msg4_dont_decode);
2041                 }
2042                 else {
2043                         ma.use_fo_hooks = 1;
2044                         mime_parser(mptr, NULL,
2045                                 *fixed_output, *fixed_output_pre,
2046                                 *fixed_output_post, (void *)&ma, 0);
2047                 }
2048
2049         }
2050
2051 DONE:   /* now we're done */
2052         if (do_proto) cprintf("000\n");
2053         return(om_ok);
2054 }
2055
2056
2057
2058 /*
2059  * display a message (mode 0 - Citadel proprietary)
2060  */
2061 void cmd_msg0(char *cmdbuf)
2062 {
2063         long msgid;
2064         int headers_only = HEADERS_ALL;
2065
2066         msgid = extract_long(cmdbuf, 0);
2067         headers_only = extract_int(cmdbuf, 1);
2068
2069         CtdlOutputMsg(msgid, MT_CITADEL, headers_only, 1, 0, NULL, 0);
2070         return;
2071 }
2072
2073
2074 /*
2075  * display a message (mode 2 - RFC822)
2076  */
2077 void cmd_msg2(char *cmdbuf)
2078 {
2079         long msgid;
2080         int headers_only = HEADERS_ALL;
2081
2082         msgid = extract_long(cmdbuf, 0);
2083         headers_only = extract_int(cmdbuf, 1);
2084
2085         CtdlOutputMsg(msgid, MT_RFC822, headers_only, 1, 1, NULL, 0);
2086 }
2087
2088
2089
2090 /*
2091  * display a message (mode 3 - IGnet raw format - internal programs only)
2092  */
2093 void cmd_msg3(char *cmdbuf)
2094 {
2095         long msgnum;
2096         struct CtdlMessage *msg = NULL;
2097         struct ser_ret smr;
2098
2099         if (CC->internal_pgm == 0) {
2100                 cprintf("%d This command is for internal programs only.\n",
2101                         ERROR + HIGHER_ACCESS_REQUIRED);
2102                 return;
2103         }
2104
2105         msgnum = extract_long(cmdbuf, 0);
2106         msg = CtdlFetchMessage(msgnum, 1);
2107         if (msg == NULL) {
2108                 cprintf("%d Message %ld not found.\n",
2109                         ERROR + MESSAGE_NOT_FOUND, msgnum);
2110                 return;
2111         }
2112
2113         serialize_message(&smr, msg);
2114         CtdlFreeMessage(msg);
2115
2116         if (smr.len == 0) {
2117                 cprintf("%d Unable to serialize message\n",
2118                         ERROR + INTERNAL_ERROR);
2119                 return;
2120         }
2121
2122         cprintf("%d %ld\n", BINARY_FOLLOWS, (long)smr.len);
2123         client_write((char *)smr.ser, (int)smr.len);
2124         free(smr.ser);
2125 }
2126
2127
2128
2129 /*
2130  * Display a message using MIME content types
2131  */
2132 void cmd_msg4(char *cmdbuf)
2133 {
2134         long msgid;
2135         char section[64];
2136
2137         msgid = extract_long(cmdbuf, 0);
2138         extract_token(section, cmdbuf, 1, '|', sizeof section);
2139         CtdlOutputMsg(msgid, MT_MIME, 0, 1, 0, (section[0] ? section : NULL) , 0);
2140 }
2141
2142
2143
2144 /*
2145  * Client tells us its preferred message format(s)
2146  */
2147 void cmd_msgp(char *cmdbuf)
2148 {
2149         if (!strcasecmp(cmdbuf, "dont_decode")) {
2150                 CC->msg4_dont_decode = 1;
2151                 cprintf("%d MSG4 will not pre-decode messages.\n", CIT_OK);
2152         }
2153         else {
2154                 safestrncpy(CC->preferred_formats, cmdbuf, sizeof(CC->preferred_formats));
2155                 cprintf("%d Preferred MIME formats have been set.\n", CIT_OK);
2156         }
2157 }
2158
2159
2160 /*
2161  * Open a component of a MIME message as a download file
2162  */
2163 void cmd_opna(char *cmdbuf)
2164 {
2165         long msgid;
2166         char desired_section[128];
2167
2168         msgid = extract_long(cmdbuf, 0);
2169         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2170         safestrncpy(CC->download_desired_section, desired_section,
2171                 sizeof CC->download_desired_section);
2172         CtdlOutputMsg(msgid, MT_DOWNLOAD, 0, 1, 1, NULL, 0);
2173 }
2174
2175
2176 /*
2177  * Open a component of a MIME message and transmit it all at once
2178  */
2179 void cmd_dlat(char *cmdbuf)
2180 {
2181         long msgid;
2182         char desired_section[128];
2183
2184         msgid = extract_long(cmdbuf, 0);
2185         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2186         safestrncpy(CC->download_desired_section, desired_section,
2187                 sizeof CC->download_desired_section);
2188         CtdlOutputMsg(msgid, MT_SPEW_SECTION, 0, 1, 1, NULL, 0);
2189 }
2190
2191
2192 /*
2193  * Save one or more message pointers into a specified room
2194  * (Returns 0 for success, nonzero for failure)
2195  * roomname may be NULL to use the current room
2196  *
2197  * Note that the 'supplied_msg' field may be set to NULL, in which case
2198  * the message will be fetched from disk, by number, if we need to perform
2199  * replication checks.  This adds an additional database read, so if the
2200  * caller already has the message in memory then it should be supplied.  (Obviously
2201  * this mode of operation only works if we're saving a single message.)
2202  */
2203 int CtdlSaveMsgPointersInRoom(char *roomname, long newmsgidlist[], int num_newmsgs,
2204                                 int do_repl_check, struct CtdlMessage *supplied_msg)
2205 {
2206         int i, j, unique;
2207         char hold_rm[ROOMNAMELEN];
2208         struct cdbdata *cdbfr;
2209         int num_msgs;
2210         long *msglist;
2211         long highest_msg = 0L;
2212
2213         long msgid = 0;
2214         struct CtdlMessage *msg = NULL;
2215
2216         long *msgs_to_be_merged = NULL;
2217         int num_msgs_to_be_merged = 0;
2218
2219         CtdlLogPrintf(CTDL_DEBUG,
2220                 "CtdlSaveMsgPointersInRoom(room=%s, num_msgs=%d, repl=%d)\n",
2221                 roomname, num_newmsgs, do_repl_check);
2222
2223         strcpy(hold_rm, CC->room.QRname);
2224
2225         /* Sanity checks */
2226         if (newmsgidlist == NULL) return(ERROR + INTERNAL_ERROR);
2227         if (num_newmsgs < 1) return(ERROR + INTERNAL_ERROR);
2228         if (num_newmsgs > 1) supplied_msg = NULL;
2229
2230         /* Now the regular stuff */
2231         if (lgetroom(&CC->room,
2232            ((roomname != NULL) ? roomname : CC->room.QRname) )
2233            != 0) {
2234                 CtdlLogPrintf(CTDL_ERR, "No such room <%s>\n", roomname);
2235                 return(ERROR + ROOM_NOT_FOUND);
2236         }
2237
2238
2239         msgs_to_be_merged = malloc(sizeof(long) * num_newmsgs);
2240         num_msgs_to_be_merged = 0;
2241
2242
2243         cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
2244         if (cdbfr == NULL) {
2245                 msglist = NULL;
2246                 num_msgs = 0;
2247         } else {
2248                 msglist = (long *) cdbfr->ptr;
2249                 cdbfr->ptr = NULL;      /* CtdlSaveMsgPointerInRoom() now owns this memory */
2250                 num_msgs = cdbfr->len / sizeof(long);
2251                 cdb_free(cdbfr);
2252         }
2253
2254
2255         /* Create a list of msgid's which were supplied by the caller, but do
2256          * not already exist in the target room.  It is absolutely taboo to
2257          * have more than one reference to the same message in a room.
2258          */
2259         for (i=0; i<num_newmsgs; ++i) {
2260                 unique = 1;
2261                 if (num_msgs > 0) for (j=0; j<num_msgs; ++j) {
2262                         if (msglist[j] == newmsgidlist[i]) {
2263                                 unique = 0;
2264                         }
2265                 }
2266                 if (unique) {
2267                         msgs_to_be_merged[num_msgs_to_be_merged++] = newmsgidlist[i];
2268                 }
2269         }
2270
2271         CtdlLogPrintf(9, "%d unique messages to be merged\n", num_msgs_to_be_merged);
2272
2273         /*
2274          * Now merge the new messages
2275          */
2276         msglist = realloc(msglist, (sizeof(long) * (num_msgs + num_msgs_to_be_merged)) );
2277         if (msglist == NULL) {
2278                 CtdlLogPrintf(CTDL_ALERT, "ERROR: can't realloc message list!\n");
2279         }
2280         memcpy(&msglist[num_msgs], msgs_to_be_merged, (sizeof(long) * num_msgs_to_be_merged) );
2281         num_msgs += num_msgs_to_be_merged;
2282
2283         /* Sort the message list, so all the msgid's are in order */
2284         num_msgs = sort_msglist(msglist, num_msgs);
2285
2286         /* Determine the highest message number */
2287         highest_msg = msglist[num_msgs - 1];
2288
2289         /* Write it back to disk. */
2290         cdb_store(CDB_MSGLISTS, &CC->room.QRnumber, (int)sizeof(long),
2291                   msglist, (int)(num_msgs * sizeof(long)));
2292
2293         /* Free up the memory we used. */
2294         free(msglist);
2295
2296         /* Update the highest-message pointer and unlock the room. */
2297         CC->room.QRhighest = highest_msg;
2298         lputroom(&CC->room);
2299
2300         /* Perform replication checks if necessary */
2301         if ( (DoesThisRoomNeedEuidIndexing(&CC->room)) && (do_repl_check) ) {
2302                 CtdlLogPrintf(CTDL_DEBUG, "CtdlSaveMsgPointerInRoom() doing repl checks\n");
2303
2304                 for (i=0; i<num_msgs_to_be_merged; ++i) {
2305                         msgid = msgs_to_be_merged[i];
2306
2307                         if (supplied_msg != NULL) {
2308                                 msg = supplied_msg;
2309                         }
2310                         else {
2311                                 msg = CtdlFetchMessage(msgid, 0);
2312                         }
2313
2314                         if (msg != NULL) {
2315                                 ReplicationChecks(msg);
2316
2317                                 /* If the message has an Exclusive ID, index that... */
2318                                 if (msg->cm_fields['E'] != NULL) {
2319                                         index_message_by_euid(msg->cm_fields['E'], &CC->room, msgid);
2320                                 }
2321
2322                                 /* Free up the memory we may have allocated */
2323                                 if (msg != supplied_msg) {
2324                                         CtdlFreeMessage(msg);
2325                                 }
2326                         }
2327
2328                 }
2329         }
2330
2331         else {
2332                 CtdlLogPrintf(CTDL_DEBUG, "CtdlSaveMsgPointerInRoom() skips repl checks\n");
2333         }
2334
2335         /* Submit this room for processing by hooks */
2336         PerformRoomHooks(&CC->room);
2337
2338         /* Go back to the room we were in before we wandered here... */
2339         getroom(&CC->room, hold_rm);
2340
2341         /* Bump the reference count for all messages which were merged */
2342         for (i=0; i<num_msgs_to_be_merged; ++i) {
2343                 AdjRefCount(msgs_to_be_merged[i], +1);
2344         }
2345
2346         /* Free up memory... */
2347         if (msgs_to_be_merged != NULL) {
2348                 free(msgs_to_be_merged);
2349         }
2350
2351         /* Return success. */
2352         return (0);
2353 }
2354
2355
2356 /*
2357  * This is the same as CtdlSaveMsgPointersInRoom() but it only accepts
2358  * a single message.
2359  */
2360 int CtdlSaveMsgPointerInRoom(char *roomname, long msgid,
2361                         int do_repl_check, struct CtdlMessage *supplied_msg)
2362 {
2363         return CtdlSaveMsgPointersInRoom(roomname, &msgid, 1, do_repl_check, supplied_msg);
2364 }
2365
2366
2367
2368
2369 /*
2370  * Message base operation to save a new message to the message store
2371  * (returns new message number)
2372  *
2373  * This is the back end for CtdlSubmitMsg() and should not be directly
2374  * called by server-side modules.
2375  *
2376  */
2377 long send_message(struct CtdlMessage *msg) {
2378         long newmsgid;
2379         long retval;
2380         char msgidbuf[256];
2381         struct ser_ret smr;
2382         int is_bigmsg = 0;
2383         char *holdM = NULL;
2384
2385         /* Get a new message number */
2386         newmsgid = get_new_message_number();
2387         snprintf(msgidbuf, sizeof msgidbuf, "%010ld@%s", newmsgid, config.c_fqdn);
2388
2389         /* Generate an ID if we don't have one already */
2390         if (msg->cm_fields['I']==NULL) {
2391                 msg->cm_fields['I'] = strdup(msgidbuf);
2392         }
2393
2394         /* If the message is big, set its body aside for storage elsewhere */
2395         if (msg->cm_fields['M'] != NULL) {
2396                 if (strlen(msg->cm_fields['M']) > BIGMSG) {
2397                         is_bigmsg = 1;
2398                         holdM = msg->cm_fields['M'];
2399                         msg->cm_fields['M'] = NULL;
2400                 }
2401         }
2402
2403         /* Serialize our data structure for storage in the database */
2404         serialize_message(&smr, msg);
2405
2406         if (is_bigmsg) {
2407                 msg->cm_fields['M'] = holdM;
2408         }
2409
2410         if (smr.len == 0) {
2411                 cprintf("%d Unable to serialize message\n",
2412                         ERROR + INTERNAL_ERROR);
2413                 return (-1L);
2414         }
2415
2416         /* Write our little bundle of joy into the message base */
2417         if (cdb_store(CDB_MSGMAIN, &newmsgid, (int)sizeof(long),
2418                       smr.ser, smr.len) < 0) {
2419                 CtdlLogPrintf(CTDL_ERR, "Can't store message\n");
2420                 retval = 0L;
2421         } else {
2422                 if (is_bigmsg) {
2423                         cdb_store(CDB_BIGMSGS,
2424                                 &newmsgid,
2425                                 (int)sizeof(long),
2426                                 holdM,
2427                                 (strlen(holdM) + 1)
2428                         );
2429                 }
2430                 retval = newmsgid;
2431         }
2432
2433         /* Free the memory we used for the serialized message */
2434         free(smr.ser);
2435
2436         /* Return the *local* message ID to the caller
2437          * (even if we're storing an incoming network message)
2438          */
2439         return(retval);
2440 }
2441
2442
2443
2444 /*
2445  * Serialize a struct CtdlMessage into the format used on disk and network.
2446  *
2447  * This function loads up a "struct ser_ret" (defined in server.h) which
2448  * contains the length of the serialized message and a pointer to the
2449  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
2450  */
2451 void serialize_message(struct ser_ret *ret,             /* return values */
2452                         struct CtdlMessage *msg)        /* unserialized msg */
2453 {
2454         size_t wlen, fieldlen;
2455         int i;
2456         static char *forder = FORDER;
2457
2458         /*
2459          * Check for valid message format
2460          */
2461         if (is_valid_message(msg) == 0) {
2462                 CtdlLogPrintf(CTDL_ERR, "serialize_message() aborting due to invalid message\n");
2463                 ret->len = 0;
2464                 ret->ser = NULL;
2465                 return;
2466         }
2467
2468         ret->len = 3;
2469         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL)
2470                 ret->len = ret->len +
2471                         strlen(msg->cm_fields[(int)forder[i]]) + 2;
2472
2473         ret->ser = malloc(ret->len);
2474         if (ret->ser == NULL) {
2475                 CtdlLogPrintf(CTDL_ERR, "serialize_message() malloc(%ld) failed: %s\n",
2476                         (long)ret->len, strerror(errno));
2477                 ret->len = 0;
2478                 ret->ser = NULL;
2479                 return;
2480         }
2481
2482         ret->ser[0] = 0xFF;
2483         ret->ser[1] = msg->cm_anon_type;
2484         ret->ser[2] = msg->cm_format_type;
2485         wlen = 3;
2486
2487         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
2488                 fieldlen = strlen(msg->cm_fields[(int)forder[i]]);
2489                 ret->ser[wlen++] = (char)forder[i];
2490                 safestrncpy((char *)&ret->ser[wlen], msg->cm_fields[(int)forder[i]], fieldlen+1);
2491                 wlen = wlen + fieldlen + 1;
2492         }
2493         if (ret->len != wlen) CtdlLogPrintf(CTDL_ERR, "ERROR: len=%ld wlen=%ld\n",
2494                 (long)ret->len, (long)wlen);
2495
2496         return;
2497 }
2498
2499
2500 /*
2501  * Serialize a struct CtdlMessage into the format used on disk and network.
2502  *
2503  * This function loads up a "struct ser_ret" (defined in server.h) which
2504  * contains the length of the serialized message and a pointer to the
2505  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
2506  */
2507 void dump_message(struct CtdlMessage *msg,      /* unserialized msg */
2508                   long Siz)                     /* how many chars ? */
2509 {
2510         size_t wlen;
2511         int i;
2512         static char *forder = FORDER;
2513         char *buf;
2514
2515         /*
2516          * Check for valid message format
2517          */
2518         if (is_valid_message(msg) == 0) {
2519                 CtdlLogPrintf(CTDL_ERR, "dump_message() aborting due to invalid message\n");
2520                 return;
2521         }
2522
2523         buf = (char*) malloc (Siz + 1);
2524
2525         wlen = 3;
2526
2527         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
2528                         snprintf (buf, Siz, " msg[%c] = %s ...\n", (char) forder[i],
2529                                    msg->cm_fields[(int)forder[i]]);
2530                         client_write (buf, strlen(buf));
2531                 }
2532
2533         return;
2534 }
2535
2536
2537
2538 /*
2539  * Check to see if any messages already exist in the current room which
2540  * carry the same Exclusive ID as this one.  If any are found, delete them.
2541  */
2542 void ReplicationChecks(struct CtdlMessage *msg) {
2543         long old_msgnum = (-1L);
2544
2545         if (DoesThisRoomNeedEuidIndexing(&CC->room) == 0) return;
2546
2547         CtdlLogPrintf(CTDL_DEBUG, "Performing replication checks in <%s>\n",
2548                 CC->room.QRname);
2549
2550         /* No exclusive id?  Don't do anything. */
2551         if (msg == NULL) return;
2552         if (msg->cm_fields['E'] == NULL) return;
2553         if (IsEmptyStr(msg->cm_fields['E'])) return;
2554         /*CtdlLogPrintf(CTDL_DEBUG, "Exclusive ID: <%s> for room <%s>\n",
2555                 msg->cm_fields['E'], CC->room.QRname);*/
2556
2557         old_msgnum = locate_message_by_euid(msg->cm_fields['E'], &CC->room);
2558         if (old_msgnum > 0L) {
2559                 CtdlLogPrintf(CTDL_DEBUG, "ReplicationChecks() replacing message %ld\n", old_msgnum);
2560                 CtdlDeleteMessages(CC->room.QRname, &old_msgnum, 1, "");
2561         }
2562 }
2563
2564
2565
2566 /*
2567  * Save a message to disk and submit it into the delivery system.
2568  */
2569 long CtdlSubmitMsg(struct CtdlMessage *msg,     /* message to save */
2570                    struct recptypes *recps,     /* recipients (if mail) */
2571                    char *force,                 /* force a particular room? */
2572                    int flags                    /* should the bessage be exported clean? */
2573 ) {
2574         char submit_filename[128];
2575         char generated_timestamp[32];
2576         char hold_rm[ROOMNAMELEN];
2577         char actual_rm[ROOMNAMELEN];
2578         char force_room[ROOMNAMELEN];
2579         char content_type[SIZ];                 /* We have to learn this */
2580         char recipient[SIZ];
2581         long newmsgid;
2582         char *mptr = NULL;
2583         struct ctdluser userbuf;
2584         int a, i;
2585         struct MetaData smi;
2586         FILE *network_fp = NULL;
2587         static int seqnum = 1;
2588         struct CtdlMessage *imsg = NULL;
2589         char *instr = NULL;
2590         size_t instr_alloc = 0;
2591         struct ser_ret smr;
2592         char *hold_R, *hold_D;
2593         char *collected_addresses = NULL;
2594         struct addresses_to_be_filed *aptr = NULL;
2595         char *saved_rfc822_version = NULL;
2596         int qualified_for_journaling = 0;
2597         struct CitContext *CCC = CC;            /* CachedCitContext - performance boost */
2598         char bounce_to[1024] = "";
2599
2600         CtdlLogPrintf(CTDL_DEBUG, "CtdlSubmitMsg() called\n");
2601         if (is_valid_message(msg) == 0) return(-1);     /* self check */
2602
2603         /* If this message has no timestamp, we take the liberty of
2604          * giving it one, right now.
2605          */
2606         if (msg->cm_fields['T'] == NULL) {
2607                 snprintf(generated_timestamp, sizeof generated_timestamp, "%ld", (long)time(NULL));
2608                 msg->cm_fields['T'] = strdup(generated_timestamp);
2609         }
2610
2611         /* If this message has no path, we generate one.
2612          */
2613         if (msg->cm_fields['P'] == NULL) {
2614                 if (msg->cm_fields['A'] != NULL) {
2615                         msg->cm_fields['P'] = strdup(msg->cm_fields['A']);
2616                         for (a=0; !IsEmptyStr(&msg->cm_fields['P'][a]); ++a) {
2617                                 if (isspace(msg->cm_fields['P'][a])) {
2618                                         msg->cm_fields['P'][a] = ' ';
2619                                 }
2620                         }
2621                 }
2622                 else {
2623                         msg->cm_fields['P'] = strdup("unknown");
2624                 }
2625         }
2626
2627         if (force == NULL) {
2628                 strcpy(force_room, "");
2629         }
2630         else {
2631                 strcpy(force_room, force);
2632         }
2633
2634         /* Learn about what's inside, because it's what's inside that counts */
2635         if (msg->cm_fields['M'] == NULL) {
2636                 CtdlLogPrintf(CTDL_ERR, "ERROR: attempt to save message with NULL body\n");
2637                 return(-2);
2638         }
2639
2640         switch (msg->cm_format_type) {
2641         case 0:
2642                 strcpy(content_type, "text/x-citadel-variformat");
2643                 break;
2644         case 1:
2645                 strcpy(content_type, "text/plain");
2646                 break;
2647         case 4:
2648                 strcpy(content_type, "text/plain");
2649                 mptr = bmstrcasestr(msg->cm_fields['M'], "Content-type:");
2650                 if (mptr != NULL) {
2651                         char *aptr;
2652                         safestrncpy(content_type, &mptr[13], sizeof content_type);
2653                         striplt(content_type);
2654                         aptr = content_type;
2655                         while (!IsEmptyStr(aptr)) {
2656                                 if ((*aptr == ';')
2657                                     || (*aptr == ' ')
2658                                     || (*aptr == 13)
2659                                     || (*aptr == 10)) {
2660                                         *aptr = 0;
2661                                 }
2662                                 else aptr++;
2663                         }
2664                 }
2665         }
2666
2667         /* Goto the correct room */
2668         CtdlLogPrintf(CTDL_DEBUG, "Selected room %s\n", (recps) ? CCC->room.QRname : SENTITEMS);
2669         strcpy(hold_rm, CCC->room.QRname);
2670         strcpy(actual_rm, CCC->room.QRname);
2671         if (recps != NULL) {
2672                 strcpy(actual_rm, SENTITEMS);
2673         }
2674
2675         /* If the user is a twit, move to the twit room for posting */
2676         if (TWITDETECT) {
2677                 if (CCC->user.axlevel == 2) {
2678                         strcpy(hold_rm, actual_rm);
2679                         strcpy(actual_rm, config.c_twitroom);
2680                         CtdlLogPrintf(CTDL_DEBUG, "Diverting to twit room\n");
2681                 }
2682         }
2683
2684         /* ...or if this message is destined for Aide> then go there. */
2685         if (!IsEmptyStr(force_room)) {
2686                 strcpy(actual_rm, force_room);
2687         }
2688
2689         CtdlLogPrintf(CTDL_DEBUG, "Final selection: %s\n", actual_rm);
2690         if (strcasecmp(actual_rm, CCC->room.QRname)) {
2691                 /* getroom(&CCC->room, actual_rm); */
2692                 usergoto(actual_rm, 0, 1, NULL, NULL);
2693         }
2694
2695         /*
2696          * If this message has no O (room) field, generate one.
2697          */
2698         if (msg->cm_fields['O'] == NULL) {
2699                 msg->cm_fields['O'] = strdup(CCC->room.QRname);
2700         }
2701
2702         /* Perform "before save" hooks (aborting if any return nonzero) */
2703         CtdlLogPrintf(CTDL_DEBUG, "Performing before-save hooks\n");
2704         if (PerformMessageHooks(msg, EVT_BEFORESAVE) > 0) return(-3);
2705
2706         /*
2707          * If this message has an Exclusive ID, and the room is replication
2708          * checking enabled, then do replication checks.
2709          */
2710         if (DoesThisRoomNeedEuidIndexing(&CCC->room)) {
2711                 ReplicationChecks(msg);
2712         }
2713
2714         /* Save it to disk */
2715         CtdlLogPrintf(CTDL_DEBUG, "Saving to disk\n");
2716         newmsgid = send_message(msg);
2717         if (newmsgid <= 0L) return(-5);
2718
2719         /* Write a supplemental message info record.  This doesn't have to
2720          * be a critical section because nobody else knows about this message
2721          * yet.
2722          */
2723         CtdlLogPrintf(CTDL_DEBUG, "Creating MetaData record\n");
2724         memset(&smi, 0, sizeof(struct MetaData));
2725         smi.meta_msgnum = newmsgid;
2726         smi.meta_refcount = 0;
2727         safestrncpy(smi.meta_content_type, content_type,
2728                         sizeof smi.meta_content_type);
2729
2730         /*
2731          * Measure how big this message will be when rendered as RFC822.
2732          * We do this for two reasons:
2733          * 1. We need the RFC822 length for the new metadata record, so the
2734          *    POP and IMAP services don't have to calculate message lengths
2735          *    while the user is waiting (multiplied by potentially hundreds
2736          *    or thousands of messages).
2737          * 2. If journaling is enabled, we will need an RFC822 version of the
2738          *    message to attach to the journalized copy.
2739          */
2740         if (CCC->redirect_buffer != NULL) {
2741                 CtdlLogPrintf(CTDL_ALERT, "CCC->redirect_buffer is not NULL during message submission!\n");
2742                 abort();
2743         }
2744         CCC->redirect_buffer = malloc(SIZ);
2745         CCC->redirect_len = 0;
2746         CCC->redirect_alloc = SIZ;
2747         CtdlOutputPreLoadedMsg(msg, MT_RFC822, HEADERS_ALL, 0, 1, QP_EADDR);
2748         smi.meta_rfc822_length = CCC->redirect_len;
2749         saved_rfc822_version = CCC->redirect_buffer;
2750         CCC->redirect_buffer = NULL;
2751         CCC->redirect_len = 0;
2752         CCC->redirect_alloc = 0;
2753
2754         PutMetaData(&smi);
2755
2756         /* Now figure out where to store the pointers */
2757         CtdlLogPrintf(CTDL_DEBUG, "Storing pointers\n");
2758
2759         /* If this is being done by the networker delivering a private
2760          * message, we want to BYPASS saving the sender's copy (because there
2761          * is no local sender; it would otherwise go to the Trashcan).
2762          */
2763         if ((!CCC->internal_pgm) || (recps == NULL)) {
2764                 if (CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 1, msg) != 0) {
2765                         CtdlLogPrintf(CTDL_ERR, "ERROR saving message pointer!\n");
2766                         CtdlSaveMsgPointerInRoom(config.c_aideroom, newmsgid, 0, msg);
2767                 }
2768         }
2769
2770         /* For internet mail, drop a copy in the outbound queue room */
2771         if (recps != NULL)
2772          if (recps->num_internet > 0) {
2773                 CtdlSaveMsgPointerInRoom(SMTP_SPOOLOUT_ROOM, newmsgid, 0, msg);
2774         }
2775
2776         /* If other rooms are specified, drop them there too. */
2777         if (recps != NULL)
2778          if (recps->num_room > 0)
2779           for (i=0; i<num_tokens(recps->recp_room, '|'); ++i) {
2780                 extract_token(recipient, recps->recp_room, i,
2781                                         '|', sizeof recipient);
2782                 CtdlLogPrintf(CTDL_DEBUG, "Delivering to room <%s>\n", recipient);
2783                 CtdlSaveMsgPointerInRoom(recipient, newmsgid, 0, msg);
2784         }
2785
2786         /* Bump this user's messages posted counter. */
2787         CtdlLogPrintf(CTDL_DEBUG, "Updating user\n");
2788         lgetuser(&CCC->user, CCC->curr_user);
2789         CCC->user.posted = CCC->user.posted + 1;
2790         lputuser(&CCC->user);
2791
2792         /* Decide where bounces need to be delivered */
2793         if (CCC->logged_in) {
2794                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", CCC->user.fullname, config.c_nodename);
2795         }
2796         else {
2797                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", msg->cm_fields['A'], msg->cm_fields['N']);
2798         }
2799
2800         /* If this is private, local mail, make a copy in the
2801          * recipient's mailbox and bump the reference count.
2802          */
2803         if (recps != NULL)
2804          if (recps->num_local > 0)
2805           for (i=0; i<num_tokens(recps->recp_local, '|'); ++i) {
2806                 extract_token(recipient, recps->recp_local, i,
2807                                         '|', sizeof recipient);
2808                 CtdlLogPrintf(CTDL_DEBUG, "Delivering private local mail to <%s>\n",
2809                         recipient);
2810                 if (getuser(&userbuf, recipient) == 0) {
2811                         // Add a flag so the Funambol module knows its mail
2812                         msg->cm_fields['W'] = strdup(recipient);
2813                         MailboxName(actual_rm, sizeof actual_rm, &userbuf, MAILROOM);
2814                         CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 0, msg);
2815                         BumpNewMailCounter(userbuf.usernum);
2816                         if (!IsEmptyStr(config.c_funambol_host) || !IsEmptyStr(config.c_pager_program)) {
2817                         /* Generate a instruction message for the Funambol notification
2818                          * server, in the same style as the SMTP queue
2819                          */
2820                            instr_alloc = 1024;
2821                            instr = malloc(instr_alloc);
2822                            snprintf(instr, instr_alloc,
2823                         "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
2824                         "bounceto|%s\n",
2825                         SPOOLMIME, newmsgid, (long)time(NULL),
2826                         bounce_to
2827                         );
2828
2829                            imsg = malloc(sizeof(struct CtdlMessage));
2830                            memset(imsg, 0, sizeof(struct CtdlMessage));
2831                            imsg->cm_magic = CTDLMESSAGE_MAGIC;
2832                            imsg->cm_anon_type = MES_NORMAL;
2833                            imsg->cm_format_type = FMT_RFC822;
2834                            imsg->cm_fields['A'] = strdup("Citadel");
2835                            imsg->cm_fields['J'] = strdup("do not journal");
2836                            imsg->cm_fields['M'] = instr;        /* imsg owns this memory now */
2837                            imsg->cm_fields['W'] = strdup(recipient);
2838                            CtdlSubmitMsg(imsg, NULL, FNBL_QUEUE_ROOM, 0);
2839                            CtdlFreeMessage(imsg);
2840                         }
2841                 }
2842                 else {
2843                         CtdlLogPrintf(CTDL_DEBUG, "No user <%s>\n", recipient);
2844                         CtdlSaveMsgPointerInRoom(config.c_aideroom,
2845                                 newmsgid, 0, msg);
2846                 }
2847         }
2848
2849         /* Perform "after save" hooks */
2850         CtdlLogPrintf(CTDL_DEBUG, "Performing after-save hooks\n");
2851         PerformMessageHooks(msg, EVT_AFTERSAVE);
2852
2853         /* For IGnet mail, we have to save a new copy into the spooler for
2854          * each recipient, with the R and D fields set to the recipient and
2855          * destination-node.  This has two ugly side effects: all other
2856          * recipients end up being unlisted in this recipient's copy of the
2857          * message, and it has to deliver multiple messages to the same
2858          * node.  We'll revisit this again in a year or so when everyone has
2859          * a network spool receiver that can handle the new style messages.
2860          */
2861         if (recps != NULL)
2862          if (recps->num_ignet > 0)
2863           for (i=0; i<num_tokens(recps->recp_ignet, '|'); ++i) {
2864                 extract_token(recipient, recps->recp_ignet, i,
2865                                 '|', sizeof recipient);
2866
2867                 hold_R = msg->cm_fields['R'];
2868                 hold_D = msg->cm_fields['D'];
2869                 msg->cm_fields['R'] = malloc(SIZ);
2870                 msg->cm_fields['D'] = malloc(128);
2871                 extract_token(msg->cm_fields['R'], recipient, 0, '@', SIZ);
2872                 extract_token(msg->cm_fields['D'], recipient, 1, '@', 128);
2873
2874                 serialize_message(&smr, msg);
2875                 if (smr.len > 0) {
2876                         snprintf(submit_filename, sizeof submit_filename,
2877                                          "%s/netmail.%04lx.%04x.%04x",
2878                                          ctdl_netin_dir,
2879                                          (long) getpid(), CCC->cs_pid, ++seqnum);
2880                         network_fp = fopen(submit_filename, "wb+");
2881                         if (network_fp != NULL) {
2882                                 fwrite(smr.ser, smr.len, 1, network_fp);
2883                                 fclose(network_fp);
2884                         }
2885                         free(smr.ser);
2886                 }
2887
2888                 free(msg->cm_fields['R']);
2889                 free(msg->cm_fields['D']);
2890                 msg->cm_fields['R'] = hold_R;
2891                 msg->cm_fields['D'] = hold_D;
2892         }
2893
2894         /* Go back to the room we started from */
2895         CtdlLogPrintf(CTDL_DEBUG, "Returning to original room %s\n", hold_rm);
2896         if (strcasecmp(hold_rm, CCC->room.QRname))
2897                 usergoto(hold_rm, 0, 1, NULL, NULL);
2898
2899         /* For internet mail, generate delivery instructions.
2900          * Yes, this is recursive.  Deal with it.  Infinite recursion does
2901          * not happen because the delivery instructions message does not
2902          * contain a recipient.
2903          */
2904         if (recps != NULL)
2905          if (recps->num_internet > 0) {
2906                 CtdlLogPrintf(CTDL_DEBUG, "Generating delivery instructions\n");
2907                 instr_alloc = 1024;
2908                 instr = malloc(instr_alloc);
2909                 snprintf(instr, instr_alloc,
2910                         "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
2911                         "bounceto|%s\n",
2912                         SPOOLMIME, newmsgid, (long)time(NULL),
2913                         bounce_to
2914                 );
2915
2916                 for (i=0; i<num_tokens(recps->recp_internet, '|'); ++i) {
2917                         size_t tmp = strlen(instr);
2918                         extract_token(recipient, recps->recp_internet, i, '|', sizeof recipient);
2919                         if ((tmp + strlen(recipient) + 32) > instr_alloc) {
2920                                 instr_alloc = instr_alloc * 2;
2921                                 instr = realloc(instr, instr_alloc);
2922                         }
2923                         snprintf(&instr[tmp], instr_alloc - tmp, "remote|%s|0||\n", recipient);
2924                 }
2925
2926                 imsg = malloc(sizeof(struct CtdlMessage));
2927                 memset(imsg, 0, sizeof(struct CtdlMessage));
2928                 imsg->cm_magic = CTDLMESSAGE_MAGIC;
2929                 imsg->cm_anon_type = MES_NORMAL;
2930                 imsg->cm_format_type = FMT_RFC822;
2931                 imsg->cm_fields['A'] = strdup("Citadel");
2932                 imsg->cm_fields['J'] = strdup("do not journal");
2933                 imsg->cm_fields['M'] = instr;   /* imsg owns this memory now */
2934                 CtdlSubmitMsg(imsg, NULL, SMTP_SPOOLOUT_ROOM, QP_EADDR);
2935                 CtdlFreeMessage(imsg);
2936         }
2937
2938         /*
2939          * Any addresses to harvest for someone's address book?
2940          */
2941         if ( (CCC->logged_in) && (recps != NULL) ) {
2942                 collected_addresses = harvest_collected_addresses(msg);
2943         }
2944
2945         if (collected_addresses != NULL) {
2946                 aptr = (struct addresses_to_be_filed *)
2947                         malloc(sizeof(struct addresses_to_be_filed));
2948                 MailboxName(actual_rm, sizeof actual_rm,
2949                         &CCC->user, USERCONTACTSROOM);
2950                 aptr->roomname = strdup(actual_rm);
2951                 aptr->collected_addresses = collected_addresses;
2952                 begin_critical_section(S_ATBF);
2953                 aptr->next = atbf;
2954                 atbf = aptr;
2955                 end_critical_section(S_ATBF);
2956         }
2957
2958         /*
2959          * Determine whether this message qualifies for journaling.
2960          */
2961         if (msg->cm_fields['J'] != NULL) {
2962                 qualified_for_journaling = 0;
2963         }
2964         else {
2965                 if (recps == NULL) {
2966                         qualified_for_journaling = config.c_journal_pubmsgs;
2967                 }
2968                 else if (recps->num_local + recps->num_ignet + recps->num_internet > 0) {
2969                         qualified_for_journaling = config.c_journal_email;
2970                 }
2971                 else {
2972                         qualified_for_journaling = config.c_journal_pubmsgs;
2973                 }
2974         }
2975
2976         /*
2977          * Do we have to perform journaling?  If so, hand off the saved
2978          * RFC822 version will be handed off to the journaler for background
2979          * submit.  Otherwise, we have to free the memory ourselves.
2980          */
2981         if (saved_rfc822_version != NULL) {
2982                 if (qualified_for_journaling) {
2983                         JournalBackgroundSubmit(msg, saved_rfc822_version, recps);
2984                 }
2985                 else {
2986                         free(saved_rfc822_version);
2987                 }
2988         }
2989
2990         /* Done. */
2991         return(newmsgid);
2992 }
2993
2994
2995
2996
2997
2998 /*
2999  * Convenience function for generating small administrative messages.
3000  */
3001 void quickie_message(char *from, char *fromaddr, char *to, char *room, char *text,
3002                         int format_type, char *subject)
3003 {
3004         struct CtdlMessage *msg;
3005         struct recptypes *recp = NULL;
3006
3007         msg = malloc(sizeof(struct CtdlMessage));
3008         memset(msg, 0, sizeof(struct CtdlMessage));
3009         msg->cm_magic = CTDLMESSAGE_MAGIC;
3010         msg->cm_anon_type = MES_NORMAL;
3011         msg->cm_format_type = format_type;
3012
3013         if (from != NULL) {
3014                 msg->cm_fields['A'] = strdup(from);
3015         }
3016         else if (fromaddr != NULL) {
3017                 msg->cm_fields['A'] = strdup(fromaddr);
3018                 if (strchr(msg->cm_fields['A'], '@')) {
3019                         *strchr(msg->cm_fields['A'], '@') = 0;
3020                 }
3021         }
3022         else {
3023                 msg->cm_fields['A'] = strdup("Citadel");
3024         }
3025
3026         if (fromaddr != NULL) msg->cm_fields['F'] = strdup(fromaddr);
3027         if (room != NULL) msg->cm_fields['O'] = strdup(room);
3028         msg->cm_fields['N'] = strdup(NODENAME);
3029         if (to != NULL) {
3030                 msg->cm_fields['R'] = strdup(to);
3031                 recp = validate_recipients(to, NULL, 0);
3032         }
3033         if (subject != NULL) {
3034                 msg->cm_fields['U'] = strdup(subject);
3035         }
3036         msg->cm_fields['M'] = strdup(text);
3037
3038         CtdlSubmitMsg(msg, recp, room, 0);
3039         CtdlFreeMessage(msg);
3040         if (recp != NULL) free_recipients(recp);
3041 }
3042
3043
3044
3045 /*
3046  * Back end function used by CtdlMakeMessage() and similar functions
3047  */
3048 char *CtdlReadMessageBody(char *terminator,     /* token signalling EOT */
3049                         size_t maxlen,          /* maximum message length */
3050                         char *exist,            /* if non-null, append to it;
3051                                                    exist is ALWAYS freed  */
3052                         int crlf,               /* CRLF newlines instead of LF */
3053                         int sock                /* socket handle or 0 for this session's client socket */
3054                         ) {
3055         char buf[1024];
3056         int linelen;
3057         size_t message_len = 0;
3058         size_t buffer_len = 0;
3059         char *ptr;
3060         char *m;
3061         int flushing = 0;
3062         int finished = 0;
3063         int dotdot = 0;
3064
3065         if (exist == NULL) {
3066                 m = malloc(4096);
3067                 m[0] = 0;
3068                 buffer_len = 4096;
3069                 message_len = 0;
3070         }
3071         else {
3072                 message_len = strlen(exist);
3073                 buffer_len = message_len + 4096;
3074                 m = realloc(exist, buffer_len);
3075                 if (m == NULL) {
3076                         free(exist);
3077                         return m;
3078                 }
3079         }
3080
3081         /* Do we need to change leading ".." to "." for SMTP escaping? */
3082         if (!strcmp(terminator, ".")) {
3083                 dotdot = 1;
3084         }
3085
3086         /* flush the input if we have nowhere to store it */
3087         if (m == NULL) {
3088                 flushing = 1;
3089         }
3090
3091         /* read in the lines of message text one by one */
3092         do {
3093                 if (sock > 0) {
3094                         if (sock_getln(sock, buf, (sizeof buf - 3)) < 0) finished = 1;
3095                 }
3096                 else {
3097                         if (client_getln(buf, (sizeof buf - 3)) < 1) finished = 1;
3098                 }
3099                 if (!strcmp(buf, terminator)) finished = 1;
3100                 if (crlf) {
3101                         strcat(buf, "\r\n");
3102                 }
3103                 else {
3104                         strcat(buf, "\n");
3105                 }
3106
3107                 /* Unescape SMTP-style input of two dots at the beginning of the line */
3108                 if (dotdot) {
3109                         if (!strncmp(buf, "..", 2)) {
3110                                 strcpy(buf, &buf[1]);
3111                         }
3112                 }
3113
3114                 if ( (!flushing) && (!finished) ) {
3115                         /* Measure the line */
3116                         linelen = strlen(buf);
3117
3118                         /* augment the buffer if we have to */
3119                         if ((message_len + linelen) >= buffer_len) {
3120                                 ptr = realloc(m, (buffer_len * 2) );
3121                                 if (ptr == NULL) {      /* flush if can't allocate */
3122                                         flushing = 1;
3123                                 } else {
3124                                         buffer_len = (buffer_len * 2);
3125                                         m = ptr;
3126                                         CtdlLogPrintf(CTDL_DEBUG, "buffer_len is now %ld\n", (long)buffer_len);
3127                                 }
3128                         }
3129
3130                         /* Add the new line to the buffer.  NOTE: this loop must avoid
3131                         * using functions like strcat() and strlen() because they
3132                         * traverse the entire buffer upon every call, and doing that
3133                         * for a multi-megabyte message slows it down beyond usability.
3134                         */
3135                         strcpy(&m[message_len], buf);
3136                         message_len += linelen;
3137                 }
3138
3139                 /* if we've hit the max msg length, flush the rest */
3140                 if (message_len >= maxlen) flushing = 1;
3141
3142         } while (!finished);
3143         return(m);
3144 }
3145
3146
3147
3148
3149 /*
3150  * Build a binary message to be saved on disk.
3151  * (NOTE: if you supply 'preformatted_text', the buffer you give it
3152  * will become part of the message.  This means you are no longer
3153  * responsible for managing that memory -- it will be freed along with
3154  * the rest of the fields when CtdlFreeMessage() is called.)
3155  */
3156
3157 struct CtdlMessage *CtdlMakeMessage(
3158         struct ctdluser *author,        /* author's user structure */
3159         char *recipient,                /* NULL if it's not mail */
3160         char *recp_cc,                  /* NULL if it's not mail */
3161         char *room,                     /* room where it's going */
3162         int type,                       /* see MES_ types in header file */
3163         int format_type,                /* variformat, plain text, MIME... */
3164         char *fake_name,                /* who we're masquerading as */
3165         char *my_email,                 /* which of my email addresses to use (empty is ok) */
3166         char *subject,                  /* Subject (optional) */
3167         char *supplied_euid,            /* ...or NULL if this is irrelevant */
3168         char *preformatted_text,        /* ...or NULL to read text from client */
3169         char *references                /* Thread references */
3170 ) {
3171         char dest_node[256];
3172         char buf[1024];
3173         struct CtdlMessage *msg;
3174
3175         msg = malloc(sizeof(struct CtdlMessage));
3176         memset(msg, 0, sizeof(struct CtdlMessage));
3177         msg->cm_magic = CTDLMESSAGE_MAGIC;
3178         msg->cm_anon_type = type;
3179         msg->cm_format_type = format_type;
3180
3181         /* Don't confuse the poor folks if it's not routed mail. */
3182         strcpy(dest_node, "");
3183
3184         striplt(recipient);
3185         striplt(recp_cc);
3186
3187         /* Path or Return-Path */
3188         if (my_email == NULL) my_email = "";
3189
3190         if (!IsEmptyStr(my_email)) {
3191                 msg->cm_fields['P'] = strdup(my_email);
3192         }
3193         else {
3194                 snprintf(buf, sizeof buf, "%s", author->fullname);
3195                 msg->cm_fields['P'] = strdup(buf);
3196         }
3197         convert_spaces_to_underscores(msg->cm_fields['P']);
3198
3199         snprintf(buf, sizeof buf, "%ld", (long)time(NULL));     /* timestamp */
3200         msg->cm_fields['T'] = strdup(buf);
3201
3202         if (fake_name[0])                                       /* author */
3203                 msg->cm_fields['A'] = strdup(fake_name);
3204         else
3205                 msg->cm_fields['A'] = strdup(author->fullname);
3206
3207         if (CC->room.QRflags & QR_MAILBOX) {            /* room */
3208                 msg->cm_fields['O'] = strdup(&CC->room.QRname[11]);
3209         }
3210         else {
3211                 msg->cm_fields['O'] = strdup(CC->room.QRname);
3212         }
3213
3214         msg->cm_fields['N'] = strdup(NODENAME);         /* nodename */
3215         msg->cm_fields['H'] = strdup(HUMANNODE);                /* hnodename */
3216
3217         if (recipient[0] != 0) {
3218                 msg->cm_fields['R'] = strdup(recipient);
3219         }
3220         if (recp_cc[0] != 0) {
3221                 msg->cm_fields['Y'] = strdup(recp_cc);
3222         }
3223         if (dest_node[0] != 0) {
3224                 msg->cm_fields['D'] = strdup(dest_node);
3225         }
3226
3227         if (!IsEmptyStr(my_email)) {
3228                 msg->cm_fields['F'] = strdup(my_email);
3229         }
3230         else if ( (author == &CC->user) && (!IsEmptyStr(CC->cs_inet_email)) ) {
3231                 msg->cm_fields['F'] = strdup(CC->cs_inet_email);
3232         }
3233
3234         if (subject != NULL) {
3235                 long length;
3236                 striplt(subject);
3237                 length = strlen(subject);
3238                 if (length > 0) {
3239                         long i;
3240                         long IsAscii;
3241                         IsAscii = -1;
3242                         i = 0;
3243                         while ((subject[i] != '\0') &&
3244                                (IsAscii = isascii(subject[i]) != 0 ))
3245                                 i++;
3246                         if (IsAscii != 0)
3247                                 msg->cm_fields['U'] = strdup(subject);
3248                         else /* ok, we've got utf8 in the string. */
3249                         {
3250                                 msg->cm_fields['U'] = rfc2047encode(subject, length);
3251                         }
3252
3253                 }
3254         }
3255
3256         if (supplied_euid != NULL) {
3257                 msg->cm_fields['E'] = strdup(supplied_euid);
3258         }
3259
3260         if (references != NULL) {
3261                 if (!IsEmptyStr(references)) {
3262                         msg->cm_fields['W'] = strdup(references);
3263                 }
3264         }
3265
3266         if (preformatted_text != NULL) {
3267                 msg->cm_fields['M'] = preformatted_text;
3268         }
3269         else {
3270                 msg->cm_fields['M'] = CtdlReadMessageBody("000", config.c_maxmsglen, NULL, 0, 0);
3271         }
3272
3273         return(msg);
3274 }
3275
3276
3277 /*
3278  * Check to see whether we have permission to post a message in the current
3279  * room.  Returns a *CITADEL ERROR CODE* and puts a message in errmsgbuf, or
3280  * returns 0 on success.
3281  */
3282 int CtdlDoIHavePermissionToPostInThisRoom(char *errmsgbuf,
3283                                           size_t n,
3284                                           const char* RemoteIdentifier,
3285                                           int PostPublic) {
3286         int ra;
3287
3288         if (!(CC->logged_in) &&
3289             (PostPublic == POST_LOGGED_IN)) {
3290                 snprintf(errmsgbuf, n, "Not logged in.");
3291                 return (ERROR + NOT_LOGGED_IN);
3292         }
3293         else if (PostPublic == CHECK_EXISTANCE) {
3294                 return (0); // We're Evaling whether a recipient exists
3295         }
3296         else if (!(CC->logged_in)) {
3297
3298                 if ((CC->room.QRflags & QR_READONLY)) {
3299                         snprintf(errmsgbuf, n, "Not logged in.");
3300                         return (ERROR + NOT_LOGGED_IN);
3301                 }
3302                 if (CC->room.QRflags2 & QR2_MODERATED) {
3303                         snprintf(errmsgbuf, n, "Not logged in Moderation feature not yet implemented!");
3304                         return (ERROR + NOT_LOGGED_IN);
3305                 }
3306                 if ((PostPublic!=POST_LMTP) &&(CC->room.QRflags2 & QR2_SMTP_PUBLIC) == 0) {
3307                         SpoolControl *sc;
3308                         char filename[SIZ];
3309                         int found;
3310
3311                         if (RemoteIdentifier == NULL)
3312                         {
3313                                 snprintf(errmsgbuf, n, "Need sender to permit access.");
3314                                 return (ERROR + USERNAME_REQUIRED);
3315                         }
3316
3317                         assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
3318                         begin_critical_section(S_NETCONFIGS);
3319                         if (!read_spoolcontrol_file(&sc, filename))
3320                         {
3321                                 end_critical_section(S_NETCONFIGS);
3322                                 snprintf(errmsgbuf, n,
3323                                         "This mailing list only accepts posts from subscribers.");
3324                                 return (ERROR + NO_SUCH_USER);
3325                         }
3326                         end_critical_section(S_NETCONFIGS);
3327                         found = is_recipient (sc, RemoteIdentifier);
3328                         free_spoolcontrol_struct(&sc);
3329                         if (found) {
3330                                 return (0);
3331                         }
3332                         else {
3333                                 snprintf(errmsgbuf, n,
3334                                         "This mailing list only accepts posts from subscribers.");
3335                                 return (ERROR + NO_SUCH_USER);
3336                         }
3337                 }
3338                 return (0);
3339
3340         }
3341
3342         if ((CC->user.axlevel < 2)
3343             && ((CC->room.QRflags & QR_MAILBOX) == 0)) {
3344                 snprintf(errmsgbuf, n, "Need to be validated to enter "
3345                                 "(except in %s> to sysop)", MAILROOM);
3346                 return (ERROR + HIGHER_ACCESS_REQUIRED);
3347         }
3348
3349         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
3350         if (!(ra & UA_POSTALLOWED)) {
3351                 snprintf(errmsgbuf, n, "Higher access is required to post in this room.");
3352                 return (ERROR + HIGHER_ACCESS_REQUIRED);
3353         }
3354
3355         strcpy(errmsgbuf, "Ok");
3356         return(0);
3357 }
3358
3359
3360 /*
3361  * Check to see if the specified user has Internet mail permission
3362  * (returns nonzero if permission is granted)
3363  */
3364 int CtdlCheckInternetMailPermission(struct ctdluser *who) {
3365
3366         /* Do not allow twits to send Internet mail */
3367         if (who->axlevel <= 2) return(0);
3368
3369         /* Globally enabled? */
3370         if (config.c_restrict == 0) return(1);
3371
3372         /* User flagged ok? */
3373         if (who->flags & US_INTERNET) return(2);
3374
3375         /* Aide level access? */
3376         if (who->axlevel >= 6) return(3);
3377
3378         /* No mail for you! */
3379         return(0);
3380 }
3381
3382
3383 /*
3384  * Validate recipients, count delivery types and errors, and handle aliasing
3385  * FIXME check for dupes!!!!!
3386  *
3387  * Returns 0 if all addresses are ok, ret->num_error = -1 if no addresses
3388  * were specified, or the number of addresses found invalid.
3389  *
3390  * Caller needs to free the result using free_recipients()
3391  */
3392 struct recptypes *validate_recipients(char *supplied_recipients,
3393                                       const char *RemoteIdentifier,
3394                                       int Flags) {
3395         struct recptypes *ret;
3396         char *recipients = NULL;
3397         char this_recp[256];
3398         char this_recp_cooked[256];
3399         char append[SIZ];
3400         int num_recps = 0;
3401         int i, j;
3402         int mailtype;
3403         int invalid;
3404         struct ctdluser tempUS;
3405         struct ctdlroom tempQR;
3406         struct ctdlroom tempQR2;
3407         int err = 0;
3408         char errmsg[SIZ];
3409         int in_quotes = 0;
3410
3411         /* Initialize */
3412         ret = (struct recptypes *) malloc(sizeof(struct recptypes));
3413         if (ret == NULL) return(NULL);
3414
3415         /* Set all strings to null and numeric values to zero */
3416         memset(ret, 0, sizeof(struct recptypes));
3417
3418         if (supplied_recipients == NULL) {
3419                 recipients = strdup("");
3420         }
3421         else {
3422                 recipients = strdup(supplied_recipients);
3423         }
3424
3425         /* Allocate some memory.  Yes, this allocates 500% more memory than we will
3426          * actually need, but it's healthier for the heap than doing lots of tiny
3427          * realloc() calls instead.
3428          */
3429
3430         ret->errormsg = malloc(strlen(recipients) + 1024);
3431         ret->recp_local = malloc(strlen(recipients) + 1024);
3432         ret->recp_internet = malloc(strlen(recipients) + 1024);
3433         ret->recp_ignet = malloc(strlen(recipients) + 1024);
3434         ret->recp_room = malloc(strlen(recipients) + 1024);
3435         ret->display_recp = malloc(strlen(recipients) + 1024);
3436
3437         ret->errormsg[0] = 0;
3438         ret->recp_local[0] = 0;
3439         ret->recp_internet[0] = 0;
3440         ret->recp_ignet[0] = 0;
3441         ret->recp_room[0] = 0;
3442         ret->display_recp[0] = 0;
3443
3444         ret->recptypes_magic = RECPTYPES_MAGIC;
3445
3446         /* Change all valid separator characters to commas */
3447         for (i=0; !IsEmptyStr(&recipients[i]); ++i) {
3448                 if ((recipients[i] == ';') || (recipients[i] == '|')) {
3449                         recipients[i] = ',';
3450                 }
3451         }
3452
3453         /* Now start extracting recipients... */
3454
3455         while (!IsEmptyStr(recipients)) {
3456
3457                 for (i=0; i<=strlen(recipients); ++i) {
3458                         if (recipients[i] == '\"') in_quotes = 1 - in_quotes;
3459                         if ( ( (recipients[i] == ',') && (!in_quotes) ) || (recipients[i] == 0) ) {
3460                                 safestrncpy(this_recp, recipients, i+1);
3461                                 this_recp[i] = 0;
3462                                 if (recipients[i] == ',') {
3463                                         strcpy(recipients, &recipients[i+1]);
3464                                 }
3465                                 else {
3466                                         strcpy(recipients, "");
3467                                 }
3468                                 break;
3469                         }
3470                 }
3471
3472                 striplt(this_recp);
3473                 if (IsEmptyStr(this_recp))
3474                         break;
3475                 CtdlLogPrintf(CTDL_DEBUG, "Evaluating recipient #%d: %s\n", num_recps, this_recp);
3476                 ++num_recps;
3477                 mailtype = alias(this_recp);
3478                 mailtype = alias(this_recp);
3479                 mailtype = alias(this_recp);
3480                 j = 0;
3481                 for (j=0; !IsEmptyStr(&this_recp[j]); ++j) {
3482                         if (this_recp[j]=='_') {
3483                                 this_recp_cooked[j] = ' ';
3484                         }
3485                         else {
3486                                 this_recp_cooked[j] = this_recp[j];
3487                         }
3488                 }
3489                 this_recp_cooked[j] = '\0';
3490                 invalid = 0;
3491                 errmsg[0] = 0;
3492                 switch(mailtype) {
3493                         case MES_LOCAL:
3494                                 if (!strcasecmp(this_recp, "sysop")) {
3495                                         ++ret->num_room;
3496                                         strcpy(this_recp, config.c_aideroom);
3497                                         if (!IsEmptyStr(ret->recp_room)) {
3498                                                 strcat(ret->recp_room, "|");
3499                                         }
3500                                         strcat(ret->recp_room, this_recp);
3501                                 }
3502                                 else if ( (!strncasecmp(this_recp, "room_", 5))
3503                                       && (!getroom(&tempQR, &this_recp_cooked[5])) ) {
3504
3505                                         /* Save room so we can restore it later */
3506                                         tempQR2 = CC->room;
3507                                         CC->room = tempQR;
3508
3509                                         /* Check permissions to send mail to this room */
3510                                         err = CtdlDoIHavePermissionToPostInThisRoom(errmsg,
3511                                                                                     sizeof errmsg,
3512                                                                                     RemoteIdentifier,
3513                                                                                     Flags
3514                                         );
3515                                         if (err)
3516                                         {
3517                                                 ++ret->num_error;
3518                                                 invalid = 1;
3519                                         }
3520                                         else {
3521                                                 ++ret->num_room;
3522                                                 if (!IsEmptyStr(ret->recp_room)) {
3523                                                         strcat(ret->recp_room, "|");
3524                                                 }
3525                                                 strcat(ret->recp_room, &this_recp_cooked[5]);
3526                                         }
3527
3528                                         /* Restore room in case something needs it */
3529                                         CC->room = tempQR2;
3530
3531                                 }
3532                                 else if (getuser(&tempUS, this_recp) == 0) {
3533                                         ++ret->num_local;
3534                                         strcpy(this_recp, tempUS.fullname);
3535                                         if (!IsEmptyStr(ret->recp_local)) {
3536                                                 strcat(ret->recp_local, "|");
3537                                         }
3538                                         strcat(ret->recp_local, this_recp);
3539                                 }
3540                                 else if (getuser(&tempUS, this_recp_cooked) == 0) {
3541                                         ++ret->num_local;
3542                                         strcpy(this_recp, tempUS.fullname);
3543                                         if (!IsEmptyStr(ret->recp_local)) {
3544                                                 strcat(ret->recp_local, "|");
3545                                         }
3546                                         strcat(ret->recp_local, this_recp);
3547                                 }
3548                                 else {
3549                                         ++ret->num_error;
3550                                         invalid = 1;
3551                                 }
3552                                 break;
3553                         case MES_INTERNET:
3554                                 /* Yes, you're reading this correctly: if the target
3555                                  * domain points back to the local system or an attached
3556                                  * Citadel directory, the address is invalid.  That's
3557                                  * because if the address were valid, we would have
3558                                  * already translated it to a local address by now.
3559                                  */
3560                                 if (IsDirectory(this_recp, 0)) {
3561                                         ++ret->num_error;
3562                                         invalid = 1;
3563                                 }
3564                                 else {
3565                                         ++ret->num_internet;
3566                                         if (!IsEmptyStr(ret->recp_internet)) {
3567                                                 strcat(ret->recp_internet, "|");
3568                                         }
3569                                         strcat(ret->recp_internet, this_recp);
3570                                 }
3571                                 break;
3572                         case MES_IGNET:
3573                                 ++ret->num_ignet;
3574                                 if (!IsEmptyStr(ret->recp_ignet)) {
3575                                         strcat(ret->recp_ignet, "|");
3576                                 }
3577                                 strcat(ret->recp_ignet, this_recp);
3578                                 break;
3579                         case MES_ERROR:
3580                                 ++ret->num_error;
3581                                 invalid = 1;
3582                                 break;
3583                 }
3584                 if (invalid) {
3585                         if (IsEmptyStr(errmsg)) {
3586                                 snprintf(append, sizeof append, "Invalid recipient: %s", this_recp);
3587                         }
3588                         else {
3589                                 snprintf(append, sizeof append, "%s", errmsg);
3590                         }
3591                         if ( (strlen(ret->errormsg) + strlen(append) + 3) < SIZ) {
3592                                 if (!IsEmptyStr(ret->errormsg)) {
3593                                         strcat(ret->errormsg, "; ");
3594                                 }
3595                                 strcat(ret->errormsg, append);
3596                         }
3597                 }
3598                 else {
3599                         if (IsEmptyStr(ret->display_recp)) {
3600                                 strcpy(append, this_recp);
3601                         }
3602                         else {
3603                                 snprintf(append, sizeof append, ", %s", this_recp);
3604                         }
3605                         if ( (strlen(ret->display_recp)+strlen(append)) < SIZ) {
3606                                 strcat(ret->display_recp, append);
3607                         }
3608                 }
3609         }
3610
3611         if ((ret->num_local + ret->num_internet + ret->num_ignet +
3612            ret->num_room + ret->num_error) == 0) {
3613                 ret->num_error = (-1);
3614                 strcpy(ret->errormsg, "No recipients specified.");
3615         }
3616
3617         CtdlLogPrintf(CTDL_DEBUG, "validate_recipients()\n");
3618         CtdlLogPrintf(CTDL_DEBUG, " local: %d <%s>\n", ret->num_local, ret->recp_local);
3619         CtdlLogPrintf(CTDL_DEBUG, "  room: %d <%s>\n", ret->num_room, ret->recp_room);
3620         CtdlLogPrintf(CTDL_DEBUG, "  inet: %d <%s>\n", ret->num_internet, ret->recp_internet);
3621         CtdlLogPrintf(CTDL_DEBUG, " ignet: %d <%s>\n", ret->num_ignet, ret->recp_ignet);
3622         CtdlLogPrintf(CTDL_DEBUG, " error: %d <%s>\n", ret->num_error, ret->errormsg);
3623
3624         free(recipients);
3625         return(ret);
3626 }
3627
3628
3629 /*
3630  * Destructor for struct recptypes
3631  */
3632 void free_recipients(struct recptypes *valid) {
3633
3634         if (valid == NULL) {
3635                 return;
3636         }
3637
3638         if (valid->recptypes_magic != RECPTYPES_MAGIC) {
3639                 CtdlLogPrintf(CTDL_EMERG, "Attempt to call free_recipients() on some other data type!\n");
3640                 abort();
3641         }
3642
3643         if (valid->errormsg != NULL)            free(valid->errormsg);
3644         if (valid->recp_local != NULL)          free(valid->recp_local);
3645         if (valid->recp_internet != NULL)       free(valid->recp_internet);
3646         if (valid->recp_ignet != NULL)          free(valid->recp_ignet);
3647         if (valid->recp_room != NULL)           free(valid->recp_room);
3648         if (valid->display_recp != NULL)        free(valid->display_recp);
3649         free(valid);
3650 }
3651
3652
3653
3654 /*
3655  * message entry  -  mode 0 (normal)
3656  */
3657 void cmd_ent0(char *entargs)
3658 {
3659         int post = 0;
3660         char recp[SIZ];
3661         char cc[SIZ];
3662         char bcc[SIZ];
3663         char supplied_euid[128];
3664         int anon_flag = 0;
3665         int format_type = 0;
3666         char newusername[256];
3667         char newuseremail[256];
3668         struct CtdlMessage *msg;
3669         int anonymous = 0;
3670         char errmsg[SIZ];
3671         int err = 0;
3672         struct recptypes *valid = NULL;
3673         struct recptypes *valid_to = NULL;
3674         struct recptypes *valid_cc = NULL;
3675         struct recptypes *valid_bcc = NULL;
3676         char subject[SIZ];
3677         int subject_required = 0;
3678         int do_confirm = 0;
3679         long msgnum;
3680         int i, j;
3681         char buf[256];
3682         int newuseremail_ok = 0;
3683         char references[SIZ];
3684         char *ptr;
3685
3686         unbuffer_output();
3687
3688         post = extract_int(entargs, 0);
3689         extract_token(recp, entargs, 1, '|', sizeof recp);
3690         anon_flag = extract_int(entargs, 2);
3691         format_type = extract_int(entargs, 3);
3692         extract_token(subject, entargs, 4, '|', sizeof subject);
3693         extract_token(newusername, entargs, 5, '|', sizeof newusername);
3694         do_confirm = extract_int(entargs, 6);
3695         extract_token(cc, entargs, 7, '|', sizeof cc);
3696         extract_token(bcc, entargs, 8, '|', sizeof bcc);
3697         switch(CC->room.QRdefaultview) {
3698                 case VIEW_NOTES:
3699                 case VIEW_WIKI:
3700                         extract_token(supplied_euid, entargs, 9, '|', sizeof supplied_euid);
3701                         break;
3702                 default:
3703                         supplied_euid[0] = 0;
3704                         break;
3705         }
3706         extract_token(newuseremail, entargs, 10, '|', sizeof newuseremail);
3707         extract_token(references, entargs, 11, '|', sizeof references);
3708         for (ptr=references; *ptr != 0; ++ptr) {
3709                 if (*ptr == '!') *ptr = '|';
3710         }
3711
3712         /* first check to make sure the request is valid. */
3713
3714         err = CtdlDoIHavePermissionToPostInThisRoom(errmsg, sizeof errmsg, NULL, POST_LOGGED_IN);
3715         if (err)
3716         {
3717                 cprintf("%d %s\n", err, errmsg);
3718                 return;
3719         }
3720
3721         /* Check some other permission type things. */
3722
3723         if (IsEmptyStr(newusername)) {
3724                 strcpy(newusername, CC->user.fullname);
3725         }
3726         if (  (CC->user.axlevel < 6)
3727            && (strcasecmp(newusername, CC->user.fullname))
3728            && (strcasecmp(newusername, CC->cs_inet_fn))
3729         ) {
3730                 cprintf("%d You don't have permission to author messages as '%s'.\n",
3731                         ERROR + HIGHER_ACCESS_REQUIRED,
3732                         newusername
3733                 );
3734                 return;
3735         }
3736
3737
3738         if (IsEmptyStr(newuseremail)) {
3739                 newuseremail_ok = 1;
3740         }
3741
3742         if (!IsEmptyStr(newuseremail)) {
3743                 if (!strcasecmp(newuseremail, CC->cs_inet_email)) {
3744                         newuseremail_ok = 1;
3745                 }
3746                 else if (!IsEmptyStr(CC->cs_inet_other_emails)) {
3747                         j = num_tokens(CC->cs_inet_other_emails, '|');
3748                         for (i=0; i<j; ++i) {
3749                                 extract_token(buf, CC->cs_inet_other_emails, i, '|', sizeof buf);
3750                                 if (!strcasecmp(newuseremail, buf)) {
3751                                         newuseremail_ok = 1;
3752                                 }
3753                         }
3754                 }
3755         }
3756
3757         if (!newuseremail_ok) {
3758                 cprintf("%d You don't have permission to author messages as '%s'.\n",
3759                         ERROR + HIGHER_ACCESS_REQUIRED,
3760                         newuseremail
3761                 );
3762                 return;
3763         }
3764
3765         CC->cs_flags |= CS_POSTING;
3766
3767         /* In mailbox rooms we have to behave a little differently --
3768          * make sure the user has specified at least one recipient.  Then
3769          * validate the recipient(s).  We do this for the Mail> room, as
3770          * well as any room which has the "Mailbox" view set.
3771          */
3772
3773         if (  ( (CC->room.QRflags & QR_MAILBOX) && (!strcasecmp(&CC->room.QRname[11], MAILROOM)) )
3774            || ( (CC->room.QRflags & QR_MAILBOX) && (CC->curr_view == VIEW_MAILBOX) )
3775         ) {
3776                 if (CC->user.axlevel < 2) {
3777                         strcpy(recp, "sysop");
3778                         strcpy(cc, "");
3779                         strcpy(bcc, "");
3780                 }
3781
3782                 valid_to = validate_recipients(recp, NULL, 0);
3783                 if (valid_to->num_error > 0) {
3784                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_to->errormsg);
3785                         free_recipients(valid_to);
3786                         return;
3787                 }
3788
3789                 valid_cc = validate_recipients(cc, NULL, 0);
3790                 if (valid_cc->num_error > 0) {
3791                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_cc->errormsg);
3792                         free_recipients(valid_to);
3793                         free_recipients(valid_cc);
3794                         return;
3795                 }
3796
3797                 valid_bcc = validate_recipients(bcc, NULL, 0);
3798                 if (valid_bcc->num_error > 0) {
3799                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_bcc->errormsg);
3800                         free_recipients(valid_to);
3801                         free_recipients(valid_cc);
3802                         free_recipients(valid_bcc);
3803                         return;
3804                 }
3805
3806                 /* Recipient required, but none were specified */
3807                 if ( (valid_to->num_error < 0) && (valid_cc->num_error < 0) && (valid_bcc->num_error < 0) ) {
3808                         free_recipients(valid_to);
3809                         free_recipients(valid_cc);
3810                         free_recipients(valid_bcc);
3811                         cprintf("%d At least one recipient is required.\n", ERROR + NO_SUCH_USER);
3812                         return;
3813                 }
3814
3815                 if (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0) {
3816                         if (CtdlCheckInternetMailPermission(&CC->user)==0) {
3817                                 cprintf("%d You do not have permission "
3818                                         "to send Internet mail.\n",
3819                                         ERROR + HIGHER_ACCESS_REQUIRED);
3820                                 free_recipients(valid_to);
3821                                 free_recipients(valid_cc);
3822                                 free_recipients(valid_bcc);
3823                                 return;
3824                         }
3825                 }
3826
3827                 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)
3828                    && (CC->user.axlevel < 4) ) {
3829                         cprintf("%d Higher access required for network mail.\n",
3830                                 ERROR + HIGHER_ACCESS_REQUIRED);
3831                         free_recipients(valid_to);
3832                         free_recipients(valid_cc);
3833                         free_recipients(valid_bcc);
3834                         return;
3835                 }
3836
3837                 if ((RESTRICT_INTERNET == 1)
3838                     && (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0)
3839                     && ((CC->user.flags & US_INTERNET) == 0)
3840                     && (!CC->internal_pgm)) {
3841                         cprintf("%d You don't have access to Internet mail.\n",
3842                                 ERROR + HIGHER_ACCESS_REQUIRED);
3843                         free_recipients(valid_to);
3844                         free_recipients(valid_cc);
3845                         free_recipients(valid_bcc);
3846                         return;
3847                 }
3848
3849         }
3850
3851         /* Is this a room which has anonymous-only or anonymous-option? */
3852         anonymous = MES_NORMAL;
3853         if (CC->room.QRflags & QR_ANONONLY) {
3854                 anonymous = MES_ANONONLY;
3855         }
3856         if (CC->room.QRflags & QR_ANONOPT) {
3857                 if (anon_flag == 1) {   /* only if the user requested it */
3858                         anonymous = MES_ANONOPT;
3859                 }
3860         }
3861
3862         if ((CC->room.QRflags & QR_MAILBOX) == 0) {
3863                 recp[0] = 0;
3864         }
3865
3866         /* Recommend to the client that the use of a message subject is
3867          * strongly recommended in this room, if either the SUBJECTREQ flag
3868          * is set, or if there is one or more Internet email recipients.
3869          */
3870         if (CC->room.QRflags2 & QR2_SUBJECTREQ) subject_required = 1;
3871         if ((valid_to)  && (valid_to->num_internet > 0))        subject_required = 1;
3872         if ((valid_cc)  && (valid_cc->num_internet > 0))        subject_required = 1;
3873         if ((valid_bcc) && (valid_bcc->num_internet > 0))       subject_required = 1;
3874
3875         /* If we're only checking the validity of the request, return
3876          * success without creating the message.
3877          */
3878         if (post == 0) {
3879                 cprintf("%d %s|%d\n", CIT_OK,
3880                         ((valid_to != NULL) ? valid_to->display_recp : ""),
3881                         subject_required);
3882                 free_recipients(valid_to);
3883                 free_recipients(valid_cc);
3884                 free_recipients(valid_bcc);
3885                 return;
3886         }
3887
3888         /* We don't need these anymore because we'll do it differently below */
3889         free_recipients(valid_to);
3890         free_recipients(valid_cc);
3891         free_recipients(valid_bcc);
3892
3893         /* Read in the message from the client. */
3894         if (do_confirm) {
3895                 cprintf("%d send message\n", START_CHAT_MODE);
3896         } else {
3897                 cprintf("%d send message\n", SEND_LISTING);
3898         }
3899
3900         msg = CtdlMakeMessage(&CC->user, recp, cc,
3901                 CC->room.QRname, anonymous, format_type,
3902                 newusername, newuseremail, subject,
3903                 ((!IsEmptyStr(supplied_euid)) ? supplied_euid : NULL),
3904                 NULL, references);
3905
3906         /* Put together one big recipients struct containing to/cc/bcc all in
3907          * one.  This is for the envelope.
3908          */
3909         char *all_recps = malloc(SIZ * 3);
3910         strcpy(all_recps, recp);
3911         if (!IsEmptyStr(cc)) {
3912                 if (!IsEmptyStr(all_recps)) {
3913                         strcat(all_recps, ",");
3914                 }
3915                 strcat(all_recps, cc);
3916         }
3917         if (!IsEmptyStr(bcc)) {
3918                 if (!IsEmptyStr(all_recps)) {
3919                         strcat(all_recps, ",");
3920                 }
3921                 strcat(all_recps, bcc);
3922         }
3923         if (!IsEmptyStr(all_recps)) {
3924                 valid = validate_recipients(all_recps, NULL, 0);
3925         }
3926         else {
3927                 valid = NULL;
3928         }
3929         free(all_recps);
3930
3931         if (msg != NULL) {
3932                 msgnum = CtdlSubmitMsg(msg, valid, "", QP_EADDR);
3933
3934                 if (do_confirm) {
3935                         cprintf("%ld\n", msgnum);
3936                         if (msgnum >= 0L) {
3937                                 cprintf("Message accepted.\n");
3938                         }
3939                         else {
3940                                 cprintf("Internal error.\n");
3941                         }
3942                         if (msg->cm_fields['E'] != NULL) {
3943                                 cprintf("%s\n", msg->cm_fields['E']);
3944                         } else {
3945                                 cprintf("\n");
3946                         }
3947                         cprintf("000\n");
3948                 }
3949
3950                 CtdlFreeMessage(msg);
3951         }
3952         if (valid != NULL) {
3953                 free_recipients(valid);
3954         }
3955         return;
3956 }
3957
3958
3959
3960 /*
3961  * API function to delete messages which match a set of criteria
3962  * (returns the actual number of messages deleted)
3963  */
3964 int CtdlDeleteMessages(char *room_name,         /* which room */
3965                         long *dmsgnums,         /* array of msg numbers to be deleted */
3966                         int num_dmsgnums,       /* number of msgs to be deleted, or 0 for "any" */
3967                         char *content_type      /* or "" for any.  regular expressions expected. */
3968 )
3969 {
3970         struct ctdlroom qrbuf;
3971         struct cdbdata *cdbfr;
3972         long *msglist = NULL;
3973         long *dellist = NULL;
3974         int num_msgs = 0;
3975         int i, j;
3976         int num_deleted = 0;
3977         int delete_this;
3978         struct MetaData smi;
3979         regex_t re;
3980         regmatch_t pm;
3981         int need_to_free_re = 0;
3982
3983         if (content_type) if (!IsEmptyStr(content_type)) {
3984                 regcomp(&re, content_type, 0);
3985                 need_to_free_re = 1;
3986         }
3987         CtdlLogPrintf(CTDL_DEBUG, "CtdlDeleteMessages(%s, %d msgs, %s)\n",
3988                 room_name, num_dmsgnums, content_type);
3989
3990         /* get room record, obtaining a lock... */
3991         if (lgetroom(&qrbuf, room_name) != 0) {
3992                 CtdlLogPrintf(CTDL_ERR, "CtdlDeleteMessages(): Room <%s> not found\n",
3993                         room_name);
3994                 if (need_to_free_re) regfree(&re);
3995                 return (0);     /* room not found */
3996         }
3997         cdbfr = cdb_fetch(CDB_MSGLISTS, &qrbuf.QRnumber, sizeof(long));
3998
3999         if (cdbfr != NULL) {
4000                 dellist = malloc(cdbfr->len);
4001                 msglist = (long *) cdbfr->ptr;
4002                 cdbfr->ptr = NULL;      /* CtdlDeleteMessages() now owns this memory */
4003                 num_msgs = cdbfr->len / sizeof(long);
4004                 cdb_free(cdbfr);
4005         }
4006         if (num_msgs > 0) {
4007                 for (i = 0; i < num_msgs; ++i) {
4008                         delete_this = 0x00;
4009
4010                         /* Set/clear a bit for each criterion */
4011
4012                         /* 0 messages in the list or a null list means that we are
4013                          * interested in deleting any messages which meet the other criteria.
4014                          */
4015                         if ((num_dmsgnums == 0) || (dmsgnums == NULL)) {
4016                                 delete_this |= 0x01;
4017                         }
4018                         else {
4019                                 for (j=0; j<num_dmsgnums; ++j) {
4020                                         if (msglist[i] == dmsgnums[j]) {
4021                                                 delete_this |= 0x01;
4022                                         }
4023                                 }
4024                         }
4025
4026                         if (IsEmptyStr(content_type)) {
4027                                 delete_this |= 0x02;
4028                         } else {
4029                                 GetMetaData(&smi, msglist[i]);
4030                                 if (regexec(&re, smi.meta_content_type, 1, &pm, 0) == 0) {
4031                                         delete_this |= 0x02;
4032                                 }
4033                         }
4034
4035                         /* Delete message only if all bits are set */
4036                         if (delete_this == 0x03) {
4037                                 dellist[num_deleted++] = msglist[i];
4038                                 msglist[i] = 0L;
4039                         }
4040                 }
4041
4042                 num_msgs = sort_msglist(msglist, num_msgs);
4043                 cdb_store(CDB_MSGLISTS, &qrbuf.QRnumber, (int)sizeof(long),
4044                           msglist, (int)(num_msgs * sizeof(long)));
4045
4046                 qrbuf.QRhighest = msglist[num_msgs - 1];
4047         }
4048         lputroom(&qrbuf);
4049
4050         /* Go through the messages we pulled out of the index, and decrement
4051          * their reference counts by 1.  If this is the only room the message
4052          * was in, the reference count will reach zero and the message will
4053          * automatically be deleted from the database.  We do this in a
4054          * separate pass because there might be plug-in hooks getting called,
4055          * and we don't want that happening during an S_ROOMS critical
4056          * section.
4057          */
4058         if (num_deleted) for (i=0; i<num_deleted; ++i) {
4059                 PerformDeleteHooks(qrbuf.QRname, dellist[i]);
4060                 AdjRefCount(dellist[i], -1);
4061         }
4062
4063         /* Now free the memory we used, and go away. */
4064         if (msglist != NULL) free(msglist);
4065         if (dellist != NULL) free(dellist);
4066         CtdlLogPrintf(CTDL_DEBUG, "%d message(s) deleted.\n", num_deleted);
4067         if (need_to_free_re) regfree(&re);
4068         return (num_deleted);
4069 }
4070
4071
4072
4073 /*
4074  * Check whether the current user has permission to delete messages from
4075  * the current room (returns 1 for yes, 0 for no)
4076  */
4077 int CtdlDoIHavePermissionToDeleteMessagesFromThisRoom(void) {
4078         int ra;
4079         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
4080         if (ra & UA_DELETEALLOWED) return(1);
4081         return(0);
4082 }
4083
4084
4085
4086
4087 /*
4088  * Delete message from current room
4089  */
4090 void cmd_dele(char *args)
4091 {
4092         int num_deleted;
4093         int i;
4094         char msgset[SIZ];
4095         char msgtok[32];
4096         long *msgs;
4097         int num_msgs = 0;
4098
4099         extract_token(msgset, args, 0, '|', sizeof msgset);
4100         num_msgs = num_tokens(msgset, ',');
4101         if (num_msgs < 1) {
4102                 cprintf("%d Nothing to do.\n", CIT_OK);
4103                 return;
4104         }
4105
4106         if (CtdlDoIHavePermissionToDeleteMessagesFromThisRoom() == 0) {
4107                 cprintf("%d Higher access required.\n",
4108                         ERROR + HIGHER_ACCESS_REQUIRED);
4109                 return;
4110         }
4111
4112         /*
4113          * Build our message set to be moved/copied
4114          */
4115         msgs = malloc(num_msgs * sizeof(long));
4116         for (i=0; i<num_msgs; ++i) {
4117                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4118                 msgs[i] = atol(msgtok);
4119         }
4120
4121         num_deleted = CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4122         free(msgs);
4123
4124         if (num_deleted) {
4125                 cprintf("%d %d message%s deleted.\n", CIT_OK,
4126                         num_deleted, ((num_deleted != 1) ? "s" : ""));
4127         } else {
4128                 cprintf("%d Message not found.\n", ERROR + MESSAGE_NOT_FOUND);
4129         }
4130 }
4131
4132
4133 /*
4134  * Back end API function for moves and deletes (multiple messages)
4135  */
4136 int CtdlCopyMsgsToRoom(long *msgnums, int num_msgs, char *dest) {
4137         int err;
4138
4139         err = CtdlSaveMsgPointersInRoom(dest, msgnums, num_msgs, 1, NULL);
4140         if (err != 0) return(err);
4141
4142         return(0);
4143 }
4144
4145
4146
4147
4148 /*
4149  * move or copy a message to another room
4150  */
4151 void cmd_move(char *args)
4152 {
4153         char msgset[SIZ];
4154         char msgtok[32];
4155         long *msgs;
4156         int num_msgs = 0;
4157
4158         char targ[ROOMNAMELEN];
4159         struct ctdlroom qtemp;
4160         int err;
4161         int is_copy = 0;
4162         int ra;
4163         int permit = 0;
4164         int i;
4165
4166         extract_token(msgset, args, 0, '|', sizeof msgset);
4167         num_msgs = num_tokens(msgset, ',');
4168         if (num_msgs < 1) {
4169                 cprintf("%d Nothing to do.\n", CIT_OK);
4170                 return;
4171         }
4172
4173         extract_token(targ, args, 1, '|', sizeof targ);
4174         convert_room_name_macros(targ, sizeof targ);
4175         targ[ROOMNAMELEN - 1] = 0;
4176         is_copy = extract_int(args, 2);
4177
4178         if (getroom(&qtemp, targ) != 0) {
4179                 cprintf("%d '%s' does not exist.\n",
4180                         ERROR + ROOM_NOT_FOUND, targ);
4181                 return;
4182         }
4183
4184         getuser(&CC->user, CC->curr_user);
4185         CtdlRoomAccess(&qtemp, &CC->user, &ra, NULL);
4186
4187         /* Check for permission to perform this operation.
4188          * Remember: "CC->room" is source, "qtemp" is target.
4189          */
4190         permit = 0;
4191
4192         /* Aides can move/copy */
4193         if (CC->user.axlevel >= 6) permit = 1;
4194
4195         /* Room aides can move/copy */
4196         if (CC->user.usernum == CC->room.QRroomaide) permit = 1;
4197
4198         /* Permit move/copy from personal rooms */
4199         if ((CC->room.QRflags & QR_MAILBOX)
4200            && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
4201
4202         /* Permit only copy from public to personal room */
4203         if ( (is_copy)
4204            && (!(CC->room.QRflags & QR_MAILBOX))
4205            && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
4206
4207         /* Permit message removal from collaborative delete rooms */
4208         if (CC->room.QRflags2 & QR2_COLLABDEL) permit = 1;
4209
4210         /* Users allowed to post into the target room may move into it too. */
4211         if ((CC->room.QRflags & QR_MAILBOX) &&
4212             (qtemp.QRflags & UA_POSTALLOWED))  permit = 1;
4213
4214         /* User must have access to target room */
4215         if (!(ra & UA_KNOWN))  permit = 0;
4216
4217         if (!permit) {
4218                 cprintf("%d Higher access required.\n",
4219                         ERROR + HIGHER_ACCESS_REQUIRED);
4220                 return;
4221         }
4222
4223         /*
4224          * Build our message set to be moved/copied
4225          */
4226         msgs = malloc(num_msgs * sizeof(long));
4227         for (i=0; i<num_msgs; ++i) {
4228                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4229                 msgs[i] = atol(msgtok);
4230         }
4231
4232         /*
4233          * Do the copy
4234          */
4235         err = CtdlCopyMsgsToRoom(msgs, num_msgs, targ);
4236         if (err != 0) {
4237                 cprintf("%d Cannot store message(s) in %s: error %d\n",
4238                         err, targ, err);
4239                 free(msgs);
4240                 return;
4241         }
4242
4243         /* Now delete the message from the source room,
4244          * if this is a 'move' rather than a 'copy' operation.
4245          */
4246         if (is_copy == 0) {
4247                 CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4248         }
4249         free(msgs);
4250
4251         cprintf("%d Message(s) %s.\n", CIT_OK, (is_copy ? "copied" : "moved") );
4252 }
4253
4254
4255
4256 /*
4257  * GetMetaData()  -  Get the supplementary record for a message
4258  */
4259 void GetMetaData(struct MetaData *smibuf, long msgnum)
4260 {
4261
4262         struct cdbdata *cdbsmi;
4263         long TheIndex;
4264
4265         memset(smibuf, 0, sizeof(struct MetaData));
4266         smibuf->meta_msgnum = msgnum;
4267         smibuf->meta_refcount = 1;      /* Default reference count is 1 */
4268
4269         /* Use the negative of the message number for its supp record index */
4270         TheIndex = (0L - msgnum);
4271
4272         cdbsmi = cdb_fetch(CDB_MSGMAIN, &TheIndex, sizeof(long));
4273         if (cdbsmi == NULL) {
4274                 return;         /* record not found; go with defaults */
4275         }
4276         memcpy(smibuf, cdbsmi->ptr,
4277                ((cdbsmi->len > sizeof(struct MetaData)) ?
4278                 sizeof(struct MetaData) : cdbsmi->len));
4279         cdb_free(cdbsmi);
4280         return;
4281 }
4282
4283
4284 /*
4285  * PutMetaData()  -  (re)write supplementary record for a message
4286  */
4287 void PutMetaData(struct MetaData *smibuf)
4288 {
4289         long TheIndex;
4290
4291         /* Use the negative of the message number for the metadata db index */
4292         TheIndex = (0L - smibuf->meta_msgnum);
4293
4294         cdb_store(CDB_MSGMAIN,
4295                   &TheIndex, (int)sizeof(long),
4296                   smibuf, (int)sizeof(struct MetaData));
4297
4298 }
4299
4300 /*
4301  * AdjRefCount  -  submit an adjustment to the reference count for a message.
4302  *                 (These are just queued -- we actually process them later.)
4303  */
4304 void AdjRefCount(long msgnum, int incr)
4305 {
4306         struct arcq new_arcq;
4307
4308         begin_critical_section(S_SUPPMSGMAIN);
4309         if (arcfp == NULL) {
4310                 arcfp = fopen(file_arcq, "ab+");
4311         }
4312         end_critical_section(S_SUPPMSGMAIN);
4313
4314         /* msgnum < 0 means that we're trying to close the file */
4315         if (msgnum < 0) {
4316                 CtdlLogPrintf(CTDL_DEBUG, "Closing the AdjRefCount queue file\n");
4317                 begin_critical_section(S_SUPPMSGMAIN);
4318                 if (arcfp != NULL) {
4319                         fclose(arcfp);
4320                         arcfp = NULL;
4321                 }
4322                 end_critical_section(S_SUPPMSGMAIN);
4323                 return;
4324         }
4325
4326         /*
4327          * If we can't open the queue, perform the operation synchronously.
4328          */
4329         if (arcfp == NULL) {
4330                 TDAP_AdjRefCount(msgnum, incr);
4331                 return;
4332         }
4333
4334         new_arcq.arcq_msgnum = msgnum;
4335         new_arcq.arcq_delta = incr;
4336         fwrite(&new_arcq, sizeof(struct arcq), 1, arcfp);
4337         fflush(arcfp);
4338
4339         return;
4340 }
4341
4342
4343 /*
4344  * TDAP_ProcessAdjRefCountQueue()
4345  *
4346  * Process the queue of message count adjustments that was created by calls
4347  * to AdjRefCount() ... by reading the queue and calling TDAP_AdjRefCount()
4348  * for each one.  This should be an "off hours" operation.
4349  */
4350 int TDAP_ProcessAdjRefCountQueue(void)
4351 {
4352         char file_arcq_temp[PATH_MAX];
4353         int r;
4354         FILE *fp;
4355         struct arcq arcq_rec;
4356         int num_records_processed = 0;
4357
4358         snprintf(file_arcq_temp, sizeof file_arcq_temp, "%s.%04x", file_arcq, rand());
4359
4360         begin_critical_section(S_SUPPMSGMAIN);
4361         if (arcfp != NULL) {
4362                 fclose(arcfp);
4363                 arcfp = NULL;
4364         }
4365
4366         r = link(file_arcq, file_arcq_temp);
4367         if (r != 0) {
4368                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4369                 end_critical_section(S_SUPPMSGMAIN);
4370                 return(num_records_processed);
4371         }
4372
4373         unlink(file_arcq);
4374         end_critical_section(S_SUPPMSGMAIN);
4375
4376         fp = fopen(file_arcq_temp, "rb");
4377         if (fp == NULL) {
4378                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4379                 return(num_records_processed);
4380         }
4381
4382         while (fread(&arcq_rec, sizeof(struct arcq), 1, fp) == 1) {
4383                 TDAP_AdjRefCount(arcq_rec.arcq_msgnum, arcq_rec.arcq_delta);
4384                 ++num_records_processed;
4385         }
4386
4387         fclose(fp);
4388         r = unlink(file_arcq_temp);
4389         if (r != 0) {
4390                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4391         }
4392
4393         return(num_records_processed);
4394 }
4395
4396
4397
4398 /*
4399  * TDAP_AdjRefCount  -  adjust the reference count for a message.
4400  *                      This one does it "for real" because it's called by
4401  *                      the autopurger function that processes the queue
4402  *                      created by AdjRefCount().   If a message's reference
4403  *                      count becomes zero, we also delete the message from
4404  *                      disk and de-index it.
4405  */
4406 void TDAP_AdjRefCount(long msgnum, int incr)
4407 {
4408
4409         struct MetaData smi;
4410         long delnum;
4411
4412         /* This is a *tight* critical section; please keep it that way, as
4413          * it may get called while nested in other critical sections.
4414          * Complicating this any further will surely cause deadlock!
4415          */
4416         begin_critical_section(S_SUPPMSGMAIN);
4417         GetMetaData(&smi, msgnum);
4418         smi.meta_refcount += incr;
4419         PutMetaData(&smi);
4420         end_critical_section(S_SUPPMSGMAIN);
4421         CtdlLogPrintf(CTDL_DEBUG, "msg %ld ref count delta %+d, is now %d\n",
4422                 msgnum, incr, smi.meta_refcount);
4423
4424         /* If the reference count is now zero, delete the message
4425          * (and its supplementary record as well).
4426          */
4427         if (smi.meta_refcount == 0) {
4428                 CtdlLogPrintf(CTDL_DEBUG, "Deleting message <%ld>\n", msgnum);
4429
4430                 /* Call delete hooks with NULL room to show it has gone altogether */
4431                 PerformDeleteHooks(NULL, msgnum);
4432
4433                 /* Remove from message base */
4434                 delnum = msgnum;
4435                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
4436                 cdb_delete(CDB_BIGMSGS, &delnum, (int)sizeof(long));
4437
4438                 /* Remove metadata record */
4439                 delnum = (0L - msgnum);
4440                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
4441         }
4442
4443 }
4444
4445 /*
4446  * Write a generic object to this room
4447  *
4448  * Note: this could be much more efficient.  Right now we use two temporary
4449  * files, and still pull the message into memory as with all others.
4450  */
4451 void CtdlWriteObject(char *req_room,                    /* Room to stuff it in */
4452                         char *content_type,             /* MIME type of this object */
4453                         char *raw_message,              /* Data to be written */
4454                         off_t raw_length,               /* Size of raw_message */
4455                         struct ctdluser *is_mailbox,    /* Mailbox room? */
4456                         int is_binary,                  /* Is encoding necessary? */
4457                         int is_unique,                  /* Del others of this type? */
4458                         unsigned int flags              /* Internal save flags */
4459                         )
4460 {
4461
4462         struct ctdlroom qrbuf;
4463         char roomname[ROOMNAMELEN];
4464         struct CtdlMessage *msg;
4465         char *encoded_message = NULL;
4466
4467         if (is_mailbox != NULL) {
4468                 MailboxName(roomname, sizeof roomname, is_mailbox, req_room);
4469         }
4470         else {
4471                 safestrncpy(roomname, req_room, sizeof(roomname));
4472         }
4473
4474         CtdlLogPrintf(CTDL_DEBUG, "Raw length is %ld\n", (long)raw_length);
4475
4476         if (is_binary) {
4477                 encoded_message = malloc((size_t) (((raw_length * 134) / 100) + 4096 ) );
4478         }
4479         else {
4480                 encoded_message = malloc((size_t)(raw_length + 4096));
4481         }
4482
4483         sprintf(encoded_message, "Content-type: %s\n", content_type);
4484
4485         if (is_binary) {
4486                 sprintf(&encoded_message[strlen(encoded_message)],
4487                         "Content-transfer-encoding: base64\n\n"
4488                 );
4489         }
4490         else {
4491                 sprintf(&encoded_message[strlen(encoded_message)],
4492                         "Content-transfer-encoding: 7bit\n\n"
4493                 );
4494         }
4495
4496         if (is_binary) {
4497                 CtdlEncodeBase64(
4498                         &encoded_message[strlen(encoded_message)],
4499                         raw_message,
4500                         (int)raw_length,
4501                         0
4502                 );
4503         }
4504         else {
4505                 memcpy(
4506                         &encoded_message[strlen(encoded_message)],
4507                         raw_message,
4508                         (int)(raw_length+1)
4509                 );
4510         }
4511
4512         CtdlLogPrintf(CTDL_DEBUG, "Allocating\n");
4513         msg = malloc(sizeof(struct CtdlMessage));
4514         memset(msg, 0, sizeof(struct CtdlMessage));
4515         msg->cm_magic = CTDLMESSAGE_MAGIC;
4516         msg->cm_anon_type = MES_NORMAL;
4517         msg->cm_format_type = 4;
4518         msg->cm_fields['A'] = strdup(CC->user.fullname);
4519         msg->cm_fields['O'] = strdup(req_room);
4520         msg->cm_fields['N'] = strdup(config.c_nodename);
4521         msg->cm_fields['H'] = strdup(config.c_humannode);
4522         msg->cm_flags = flags;
4523
4524         msg->cm_fields['M'] = encoded_message;
4525
4526         /* Create the requested room if we have to. */
4527         if (getroom(&qrbuf, roomname) != 0) {
4528                 create_room(roomname,
4529                         ( (is_mailbox != NULL) ? 5 : 3 ),
4530                         "", 0, 1, 0, VIEW_BBS);
4531         }
4532         /* If the caller specified this object as unique, delete all
4533          * other objects of this type that are currently in the room.
4534          */
4535         if (is_unique) {
4536                 CtdlLogPrintf(CTDL_DEBUG, "Deleted %d other msgs of this type\n",
4537                         CtdlDeleteMessages(roomname, NULL, 0, content_type)
4538                 );
4539         }
4540         /* Now write the data */
4541         CtdlSubmitMsg(msg, NULL, roomname, 0);
4542         CtdlFreeMessage(msg);
4543 }
4544
4545
4546
4547
4548
4549
4550 void CtdlGetSysConfigBackend(long msgnum, void *userdata) {
4551         config_msgnum = msgnum;
4552 }
4553
4554
4555 char *CtdlGetSysConfig(char *sysconfname) {
4556         char hold_rm[ROOMNAMELEN];
4557         long msgnum;
4558         char *conf;
4559         struct CtdlMessage *msg;
4560         char buf[SIZ];
4561
4562         strcpy(hold_rm, CC->room.QRname);
4563         if (getroom(&CC->room, SYSCONFIGROOM) != 0) {
4564                 getroom(&CC->room, hold_rm);
4565                 return NULL;
4566         }
4567
4568
4569         /* We want the last (and probably only) config in this room */
4570         begin_critical_section(S_CONFIG);
4571         config_msgnum = (-1L);
4572         CtdlForEachMessage(MSGS_LAST, 1, NULL, sysconfname, NULL,
4573                 CtdlGetSysConfigBackend, NULL);
4574         msgnum = config_msgnum;
4575         end_critical_section(S_CONFIG);
4576
4577         if (msgnum < 0L) {
4578                 conf = NULL;
4579         }
4580         else {
4581                 msg = CtdlFetchMessage(msgnum, 1);
4582                 if (msg != NULL) {
4583                         conf = strdup(msg->cm_fields['M']);
4584                         CtdlFreeMessage(msg);
4585                 }
4586                 else {
4587                         conf = NULL;
4588                 }
4589         }
4590
4591         getroom(&CC->room, hold_rm);
4592
4593         if (conf != NULL) do {
4594                 extract_token(buf, conf, 0, '\n', sizeof buf);
4595                 strcpy(conf, &conf[strlen(buf)+1]);
4596         } while ( (!IsEmptyStr(conf)) && (!IsEmptyStr(buf)) );
4597
4598         return(conf);
4599 }
4600
4601
4602 void CtdlPutSysConfig(char *sysconfname, char *sysconfdata) {
4603         CtdlWriteObject(SYSCONFIGROOM, sysconfname, sysconfdata, (strlen(sysconfdata)+1), NULL, 0, 1, 0);
4604 }
4605
4606
4607 /*
4608  * Determine whether a given Internet address belongs to the current user
4609  */
4610 int CtdlIsMe(char *addr, int addr_buf_len)
4611 {
4612         struct recptypes *recp;
4613         int i;
4614
4615         recp = validate_recipients(addr, NULL, 0);
4616         if (recp == NULL) return(0);
4617
4618         if (recp->num_local == 0) {
4619                 free_recipients(recp);
4620                 return(0);
4621         }
4622
4623         for (i=0; i<recp->num_local; ++i) {
4624                 extract_token(addr, recp->recp_local, i, '|', addr_buf_len);
4625                 if (!strcasecmp(addr, CC->user.fullname)) {
4626                         free_recipients(recp);
4627                         return(1);
4628                 }
4629         }
4630
4631         free_recipients(recp);
4632         return(0);
4633 }
4634
4635
4636 /*
4637  * Citadel protocol command to do the same
4638  */
4639 void cmd_isme(char *argbuf) {
4640         char addr[256];
4641
4642         if (CtdlAccessCheck(ac_logged_in)) return;
4643         extract_token(addr, argbuf, 0, '|', sizeof addr);
4644
4645         if (CtdlIsMe(addr, sizeof addr)) {
4646                 cprintf("%d %s\n", CIT_OK, addr);
4647         }
4648         else {
4649                 cprintf("%d Not you.\n", ERROR + ILLEGAL_VALUE);
4650         }
4651
4652 }