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 #include "ctdl_module.h"
  58
  59 long config_msgnum;
  60 struct addresses_to_be_filed *atbf = NULL;
  61
  62 /* This temp file holds the queue of operations for AdjRefCount() */
  63 static FILE *arcfp = NULL;
  64
  65 /*
  66  * This really belongs in serv_network.c, but I don't know how to export
  67  * symbols between modules.
  68  */
  69 struct FilterList *filterlist = NULL;
  70
  71
  72 /*
  73  * These are the four-character field headers we use when outputting
  74  * messages in Citadel format (as opposed to RFC822 format).
  75  */
  76 char *msgkeys[] = {
  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, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  84         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  85         NULL,
  86         "from",
  87         NULL, NULL, NULL,
  88         "exti",
  89         "rfca",
  90         NULL,
  91         "hnod",
  92         "msgn",
  93         "jrnl",
  94         NULL,
  95         "list",
  96         "text",
  97         "node",
  98         "room",
  99         "path",
 100         NULL,
 101         "rcpt",
 102         "spec",
 103         "time",
 104         "subj",
 105         NULL,
 106         "wefw",
 107         NULL,
 108         "cccc",
 109         NULL
 110 };
 111
 112 /*
 113  * This function is self explanatory.
 114  * (What can I say, I'm in a weird mood today...)
 115  */
 116 void remove_any_whitespace_to_the_left_or_right_of_at_symbol(char *name)
 117 {
 118         int i;
 119
 120         for (i = 0; i < strlen(name); ++i) {
 121                 if (name[i] == '@') {
 122                         while (isspace(name[i - 1]) && i > 0) {
 123                                 strcpy(&name[i - 1], &name[i]);
 124                                 --i;
 125                         }
 126                         while (isspace(name[i + 1])) {
 127                                 strcpy(&name[i + 1], &name[i + 2]);
 128                         }
 129                 }
 130         }
 131 }
 132
 133
 134 /*
 135  * Aliasing for network mail.
 136  * (Error messages have been commented out, because this is a server.)
 137  */
 138 int alias(char *name)
 139 {                               /* process alias and routing info for mail */
 140         FILE *fp;
 141         int a, i;
 142         char aaa[SIZ], bbb[SIZ];
 143         char *ignetcfg = NULL;
 144         char *ignetmap = NULL;
 145         int at = 0;
 146         char node[64];
 147         char testnode[64];
 148         char buf[SIZ];
 149
 150         char original_name[256];
 151         safestrncpy(original_name, name, sizeof original_name);
 152
 153         striplt(name);
 154         remove_any_whitespace_to_the_left_or_right_of_at_symbol(name);
 155         stripallbut(name, '<', '>');
 156
 157         fp = fopen(file_mail_aliases, "r");
 158         if (fp == NULL) {
 159                 fp = fopen("/dev/null", "r");
 160         }
 161         if (fp == NULL) {
 162                 return (MES_ERROR);
 163         }
 164         strcpy(aaa, "");
 165         strcpy(bbb, "");
 166         while (fgets(aaa, sizeof aaa, fp) != NULL) {
 167                 while (isspace(name[0]))
 168                         strcpy(name, &name[1]);
 169                 aaa[strlen(aaa) - 1] = 0;
 170                 strcpy(bbb, "");
 171                 for (a = 0; a < strlen(aaa); ++a) {
 172                         if (aaa[a] == ',') {
 173                                 strcpy(bbb, &aaa[a + 1]);
 174                                 aaa[a] = 0;
 175                         }
 176                 }
 177                 if (!strcasecmp(name, aaa))
 178                         strcpy(name, bbb);
 179         }
 180         fclose(fp);
 181
 182         /* Hit the Global Address Book */
 183         if (CtdlDirectoryLookup(aaa, name, sizeof aaa) == 0) {
 184                 strcpy(name, aaa);
 185         }
 186
 187         if (strcasecmp(original_name, name)) {
 188                 CtdlLogPrintf(CTDL_INFO, "%s is being forwarded to %s\n", original_name, name);
 189         }
 190
 191         /* Change "user @ xxx" to "user" if xxx is an alias for this host */
 192         for (a=0; a<strlen(name); ++a) {
 193                 if (name[a] == '@') {
 194                         if (CtdlHostAlias(&name[a+1]) == hostalias_localhost) {
 195                                 name[a] = 0;
 196                                 CtdlLogPrintf(CTDL_INFO, "Changed to <%s>\n", name);
 197                         }
 198                 }
 199         }
 200
 201         /* determine local or remote type, see citadel.h */
 202         at = haschar(name, '@');
 203         if (at == 0) return(MES_LOCAL);         /* no @'s - local address */
 204         if (at > 1) return(MES_ERROR);          /* >1 @'s - invalid address */
 205         remove_any_whitespace_to_the_left_or_right_of_at_symbol(name);
 206
 207         /* figure out the delivery mode */
 208         extract_token(node, name, 1, '@', sizeof node);
 209
 210         /* If there are one or more dots in the nodename, we assume that it
 211          * is an FQDN and will attempt SMTP delivery to the Internet.
 212          */
 213         if (haschar(node, '.') > 0) {
 214                 return(MES_INTERNET);
 215         }
 216
 217         /* Otherwise we look in the IGnet maps for a valid Citadel node.
 218          * Try directly-connected nodes first...
 219          */
 220         ignetcfg = CtdlGetSysConfig(IGNETCFG);
 221         for (i=0; i<num_tokens(ignetcfg, '\n'); ++i) {
 222                 extract_token(buf, ignetcfg, i, '\n', sizeof buf);
 223                 extract_token(testnode, buf, 0, '|', sizeof testnode);
 224                 if (!strcasecmp(node, testnode)) {
 225                         free(ignetcfg);
 226                         return(MES_IGNET);
 227                 }
 228         }
 229         free(ignetcfg);
 230
 231         /*
 232          * Then try nodes that are two or more hops away.
 233          */
 234         ignetmap = CtdlGetSysConfig(IGNETMAP);
 235         for (i=0; i<num_tokens(ignetmap, '\n'); ++i) {
 236                 extract_token(buf, ignetmap, i, '\n', sizeof buf);
 237                 extract_token(testnode, buf, 0, '|', sizeof testnode);
 238                 if (!strcasecmp(node, testnode)) {
 239                         free(ignetmap);
 240                         return(MES_IGNET);
 241                 }
 242         }
 243         free(ignetmap);
 244
 245         /* If we get to this point it's an invalid node name */
 246         return (MES_ERROR);
 247 }
 248
 249
 250 /*
 251  * Back end for the MSGS command: output message number only.
 252  */
 253 void simple_listing(long msgnum, void *userdata)
 254 {
 255         cprintf("%ld\n", msgnum);
 256 }
 257
 258
 259
 260 /*
 261  * Back end for the MSGS command: output header summary.
 262  */
 263 void headers_listing(long msgnum, void *userdata)
 264 {
 265         struct CtdlMessage *msg;
 266
 267         msg = CtdlFetchMessage(msgnum, 0);
 268         if (msg == NULL) {
 269                 cprintf("%ld|0|||||\n", msgnum);
 270                 return;
 271         }
 272
 273         cprintf("%ld|%s|%s|%s|%s|%s|\n",
 274                 msgnum,
 275                 (msg->cm_fields['T'] ? msg->cm_fields['T'] : "0"),
 276                 (msg->cm_fields['A'] ? msg->cm_fields['A'] : ""),
 277                 (msg->cm_fields['N'] ? msg->cm_fields['N'] : ""),
 278                 (msg->cm_fields['F'] ? msg->cm_fields['F'] : ""),
 279                 (msg->cm_fields['U'] ? msg->cm_fields['U'] : "")
 280         );
 281         CtdlFreeMessage(msg);
 282 }
 283
 284
 285
 286 /* Determine if a given message matches the fields in a message template.
 287  * Return 0 for a successful match.
 288  */
 289 int CtdlMsgCmp(struct CtdlMessage *msg, struct CtdlMessage *template) {
 290         int i;
 291
 292         /* If there aren't any fields in the template, all messages will
 293          * match.
 294          */
 295         if (template == NULL) return(0);
 296
 297         /* Null messages are bogus. */
 298         if (msg == NULL) return(1);
 299
 300         for (i='A'; i<='Z'; ++i) {
 301                 if (template->cm_fields[i] != NULL) {
 302                         if (msg->cm_fields[i] == NULL) {
 303                                 /* Considered equal if temmplate is empty string */
 304                                 if (IsEmptyStr(template->cm_fields[i])) continue;
 305                                 return 1;
 306                         }
 307                         if (strcasecmp(msg->cm_fields[i],
 308                                 template->cm_fields[i])) return 1;
 309                 }
 310         }
 311
 312         /* All compares succeeded: we have a match! */
 313         return 0;
 314 }
 315
 316
 317
 318 /*
 319  * Retrieve the "seen" message list for the current room.
 320  */
 321 void CtdlGetSeen(char *buf, int which_set) {
 322         struct visit vbuf;
 323
 324         /* Learn about the user and room in question */
 325         CtdlGetRelationship(&vbuf, &CC->user, &CC->room);
 326
 327         if (which_set == ctdlsetseen_seen)
 328                 safestrncpy(buf, vbuf.v_seen, SIZ);
 329         if (which_set == ctdlsetseen_answered)
 330                 safestrncpy(buf, vbuf.v_answered, SIZ);
 331 }
 332
 333
 334
 335 /*
 336  * Manipulate the "seen msgs" string (or other message set strings)
 337  */
 338 void CtdlSetSeen(long *target_msgnums, int num_target_msgnums,
 339                 int target_setting, int which_set,
 340                 struct ctdluser *which_user, struct ctdlroom *which_room) {
 341         struct cdbdata *cdbfr;
 342         int i, k;
 343         int is_seen = 0;
 344         int was_seen = 0;
 345         long lo = (-1L);
 346         long hi = (-1L);
 347         struct visit vbuf;
 348         long *msglist;
 349         int num_msgs = 0;
 350         StrBuf *vset;
 351         StrBuf *setstr;
 352         StrBuf *lostr;
 353         StrBuf *histr;
 354         const char *pvset;
 355         char *is_set;   /* actually an array of booleans */
 356         int w = 0;
 357
 358         /* Don't bother doing *anything* if we were passed a list of zero messages */
 359         if (num_target_msgnums < 1) {
 360                 return;
 361         }
 362
 363         /* If no room was specified, we go with the current room. */
 364         if (!which_room) {
 365                 which_room = &CC->room;
 366         }
 367
 368         /* If no user was specified, we go with the current user. */
 369         if (!which_user) {
 370                 which_user = &CC->user;
 371         }
 372
 373         CtdlLogPrintf(CTDL_DEBUG, "CtdlSetSeen(%d msgs starting with %ld, %s, %d) in <%s>\n",
 374                 num_target_msgnums, target_msgnums[0],
 375                 (target_setting ? "SET" : "CLEAR"),
 376                 which_set,
 377                 which_room->QRname);
 378
 379         /* Learn about the user and room in question */
 380         CtdlGetRelationship(&vbuf, which_user, which_room);
 381
 382         /* Load the message list */
 383         cdbfr = cdb_fetch(CDB_MSGLISTS, &which_room->QRnumber, sizeof(long));
 384         if (cdbfr != NULL) {
 385                 msglist = (long *) cdbfr->ptr;
 386                 cdbfr->ptr = NULL;      /* CtdlSetSeen() now owns this memory */
 387                 num_msgs = cdbfr->len / sizeof(long);
 388                 cdb_free(cdbfr);
 389         } else {
 390                 return; /* No messages at all?  No further action. */
 391         }
 392
 393         is_set = malloc(num_msgs * sizeof(char));
 394         memset(is_set, 0, (num_msgs * sizeof(char)) );
 395
 396         /* Decide which message set we're manipulating */
 397         switch(which_set) {
 398         case ctdlsetseen_seen:
 399                 vset = NewStrBufPlain(vbuf.v_seen, -1);
 400                 break;
 401         case ctdlsetseen_answered:
 402                 vset = NewStrBufPlain(vbuf.v_answered, -1);
 403                 break;
 404         default:
 405                 vset = NewStrBuf();
 406         }
 407
 408
 409 #if 0   /* This is a special diagnostic section.  Do not allow it to run during normal operation. */
 410         CtdlLogPrintf(CTDL_DEBUG, "There are %d messages in the room.\n", num_msgs);
 411         for (i=0; i<num_msgs; ++i) {
 412                 if ((i > 0) && (msglist[i] <= msglist[i-1])) abort();
 413         }
 414         CtdlLogPrintf(CTDL_DEBUG, "We are twiddling %d of them.\n", num_target_msgnums);
 415         for (k=0; k<num_target_msgnums; ++k) {
 416                 if ((k > 0) && (target_msgnums[k] <= target_msgnums[k-1])) abort();
 417         }
 418 #endif
 419
 420         CtdlLogPrintf(CTDL_DEBUG, "before update: %s\n", ChrPtr(vset));
 421
 422         /* Translate the existing sequence set into an array of booleans */
 423         setstr = NewStrBuf();
 424         lostr = NewStrBuf();
 425         histr = NewStrBuf();
 426         pvset = NULL;
 427         while (StrBufExtract_NextToken(setstr, vset, &pvset, ',') >= 0) {
 428
 429                 StrBufExtract_token(lostr, setstr, 0, ':');
 430                 if (StrBufNum_tokens(setstr, ':') >= 2) {
 431                         StrBufExtract_token(histr, setstr, 1, ':');
 432                 }
 433                 else {
 434                         FlushStrBuf(histr);
 435                         StrBufAppendBuf(histr, lostr, 0);
 436                 }
 437                 lo = StrTol(lostr);
 438                 if (!strcmp(ChrPtr(histr), "*")) {
 439                         hi = LONG_MAX;
 440                 }
 441                 else {
 442                         hi = StrTol(histr);
 443                 }
 444
 445                 for (i = 0; i < num_msgs; ++i) {
 446                         if ((msglist[i] >= lo) && (msglist[i] <= hi)) {
 447                                 is_set[i] = 1;
 448                         }
 449                 }
 450         }
 451         FreeStrBuf(&setstr);
 452         FreeStrBuf(&lostr);
 453         FreeStrBuf(&histr);
 454
 455
 456         /* Now translate the array of booleans back into a sequence set */
 457         FlushStrBuf(vset);
 458         was_seen = 0;
 459         lo = (-1);
 460         hi = (-1);
 461
 462         for (i=0; i<num_msgs; ++i) {
 463                 is_seen = is_set[i];
 464
 465                 /* Apply changes */
 466                 for (k=0; k<num_target_msgnums; ++k) {
 467                         if (msglist[i] == target_msgnums[k]) {
 468                                 is_seen = target_setting;
 469                         }
 470                 }
 471
 472                 w = 0;  /* set to 1 if we write something to the string */
 473
 474                 if ((was_seen == 0) && (is_seen == 1)) {
 475                         lo = msglist[i];
 476                 }
 477                 else if ((was_seen == 1) && (is_seen == 0)) {
 478                         hi = msglist[i-1];
 479                         w = 1;
 480
 481                         if (StrLength(vset) > 0) {
 482                                 StrBufAppendBufPlain(vset, HKEY(","), 0);
 483                         }
 484                         if (lo == hi) {
 485                                 StrBufAppendPrintf(vset, "%ld", hi);
 486                         }
 487                         else {
 488                                 StrBufAppendPrintf(vset, "%ld:%ld", lo, hi);
 489                         }
 490                 }
 491                 else if ((is_seen) && (i == num_msgs - 1)) {
 492                         w = 1;
 493                         if (StrLength(vset) > 0) {
 494                                 StrBufAppendBufPlain(vset, HKEY(","), 0);
 495                         }
 496                         if ((i==0) || (was_seen == 0)) {
 497                                 StrBufAppendPrintf(vset, "%ld", msglist[i]);
 498                         }
 499                         else {
 500                                 StrBufAppendPrintf(vset, "%ld:%ld", lo, msglist[i]);
 501                         }
 502                 }
 503
 504                 was_seen = is_seen;
 505         }
 506
 507         while (StrLength(vset) > SIZ) {
 508                 /*
 509                  * If we're truncating the sequence set of messages marked with the 'seen' flag,
 510                  * we want the earliest messages (the truncated ones) to be marked, not unmarked.
 511                  * Otherwise messages at the beginning will suddenly appear to be 'unseen'.
 512                  */
 513                 if (which_set == ctdlsetseen_seen) {
 514                         StrBuf *first_tok;
 515                         first_tok = NewStrBuf();
 516                         StrBufRemove_token(vset, 0, ',');
 517                         StrBufExtract_token(first_tok, vset, 0, ',');
 518                         StrBufRemove_token(vset, 0, ',');
 519
 520                         if (StrBufNum_tokens(first_tok, ':') > 1) {
 521                                 StrBufRemove_token(first_tok, 0, ':');
 522                         }
 523
 524                         StrBuf *new_set;
 525                         new_set = NewStrBuf();
 526                         StrBufAppendBufPlain(new_set, HKEY("1:"), 0);
 527                         StrBufAppendBuf(new_set, first_tok, 0);
 528                         StrBufAppendBufPlain(new_set, HKEY(":"), 0);
 529                         StrBufAppendBuf(new_set, vset, 0);
 530
 531                         FreeStrBuf(&vset);
 532                         FreeStrBuf(&first_tok);
 533                         vset = new_set;
 534                 }
 535         }
 536
 537         CtdlLogPrintf(CTDL_DEBUG, " after update: %s\n", ChrPtr(vset));
 538
 539         /* Decide which message set we're manipulating */
 540         switch (which_set) {
 541                 case ctdlsetseen_seen:
 542                         safestrncpy(vbuf.v_seen, ChrPtr(vset), sizeof vbuf.v_seen);
 543                         break;
 544                 case ctdlsetseen_answered:
 545                         safestrncpy(vbuf.v_answered, ChrPtr(vset), sizeof vbuf.v_answered);
 546                         break;
 547         }
 548
 549         free(is_set);
 550         free(msglist);
 551         CtdlSetRelationship(&vbuf, which_user, which_room);
 552         FreeStrBuf(&vset);
 553 }
 554
 555
 556 /*
 557  * API function to perform an operation for each qualifying message in the
 558  * current room.  (Returns the number of messages processed.)
 559  */
 560 int CtdlForEachMessage(int mode, long ref, char *search_string,
 561                         char *content_type,
 562                         struct CtdlMessage *compare,
 563                         void (*CallBack) (long, void *),
 564                         void *userdata)
 565 {
 566
 567         int a, i, j;
 568         struct visit vbuf;
 569         struct cdbdata *cdbfr;
 570         long *msglist = NULL;
 571         int num_msgs = 0;
 572         int num_processed = 0;
 573         long thismsg;
 574         struct MetaData smi;
 575         struct CtdlMessage *msg = NULL;
 576         int is_seen = 0;
 577         long lastold = 0L;
 578         int printed_lastold = 0;
 579         int num_search_msgs = 0;
 580         long *search_msgs = NULL;
 581         regex_t re;
 582         int need_to_free_re = 0;
 583         regmatch_t pm;
 584
 585         if ((content_type) && (!IsEmptyStr(content_type))) {
 586                 regcomp(&re, content_type, 0);
 587                 need_to_free_re = 1;
 588         }
 589
 590         /* Learn about the user and room in question */
 591         getuser(&CC->user, CC->curr_user);
 592         CtdlGetRelationship(&vbuf, &CC->user, &CC->room);
 593
 594         /* Load the message list */
 595         cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
 596         if (cdbfr != NULL) {
 597                 msglist = (long *) cdbfr->ptr;
 598                 num_msgs = cdbfr->len / sizeof(long);
 599         } else {
 600                 if (need_to_free_re) regfree(&re);
 601                 return 0;       /* No messages at all?  No further action. */
 602         }
 603
 604
 605         /*
 606          * Now begin the traversal.
 607          */
 608         if (num_msgs > 0) for (a = 0; a < num_msgs; ++a) {
 609
 610                 /* If the caller is looking for a specific MIME type, filter
 611                  * out all messages which are not of the type requested.
 612                  */
 613                 if ((content_type != NULL) && (!IsEmptyStr(content_type))) {
 614
 615                         /* This call to GetMetaData() sits inside this loop
 616                          * so that we only do the extra database read per msg
 617                          * if we need to.  Doing the extra read all the time
 618                          * really kills the server.  If we ever need to use
 619                          * metadata for another search criterion, we need to
 620                          * move the read somewhere else -- but still be smart
 621                          * enough to only do the read if the caller has
 622                          * specified something that will need it.
 623                          */
 624                         GetMetaData(&smi, msglist[a]);
 625
 626                         /* if (strcasecmp(smi.meta_content_type, content_type)) { old non-regex way */
 627                         if (regexec(&re, smi.meta_content_type, 1, &pm, 0) != 0) {
 628                                 msglist[a] = 0L;
 629                         }
 630                 }
 631         }
 632
 633         num_msgs = sort_msglist(msglist, num_msgs);
 634
 635         /* If a template was supplied, filter out the messages which
 636          * don't match.  (This could induce some delays!)
 637          */
 638         if (num_msgs > 0) {
 639                 if (compare != NULL) {
 640                         for (a = 0; a < num_msgs; ++a) {
 641                                 msg = CtdlFetchMessage(msglist[a], 1);
 642                                 if (msg != NULL) {
 643                                         if (CtdlMsgCmp(msg, compare)) {
 644                                                 msglist[a] = 0L;
 645                                         }
 646                                         CtdlFreeMessage(msg);
 647                                 }
 648                         }
 649                 }
 650         }
 651
 652         /* If a search string was specified, get a message list from
 653          * the full text index and remove messages which aren't on both
 654          * lists.
 655          *
 656          * How this works:
 657          * Since the lists are sorted and strictly ascending, and the
 658          * output list is guaranteed to be shorter than or equal to the
 659          * input list, we overwrite the bottom of the input list.  This
 660          * eliminates the need to memmove big chunks of the list over and
 661          * over again.
 662          */
 663         if ( (num_msgs > 0) && (mode == MSGS_SEARCH) && (search_string) ) {
 664
 665                 /* Call search module via hook mechanism.
 666                  * NULL means use any search function available.
 667                  * otherwise replace with a char * to name of search routine
 668                  */
 669                 CtdlModuleDoSearch(&num_search_msgs, &search_msgs, search_string, "fulltext");
 670
 671                 if (num_search_msgs > 0) {
 672
 673                         int orig_num_msgs;
 674
 675                         orig_num_msgs = num_msgs;
 676                         num_msgs = 0;
 677                         for (i=0; i<orig_num_msgs; ++i) {
 678                                 for (j=0; j<num_search_msgs; ++j) {
 679                                         if (msglist[i] == search_msgs[j]) {
 680                                                 msglist[num_msgs++] = msglist[i];
 681                                         }
 682                                 }
 683                         }
 684                 }
 685                 else {
 686                         num_msgs = 0;   /* No messages qualify */
 687                 }
 688                 if (search_msgs != NULL) free(search_msgs);
 689
 690                 /* Now that we've purged messages which don't contain the search
 691                  * string, treat a MSGS_SEARCH just like a MSGS_ALL from this
 692                  * point on.
 693                  */
 694                 mode = MSGS_ALL;
 695         }
 696
 697         /*
 698          * Now iterate through the message list, according to the
 699          * criteria supplied by the caller.
 700          */
 701         if (num_msgs > 0)
 702                 for (a = 0; a < num_msgs; ++a) {
 703                         thismsg = msglist[a];
 704                         if (mode == MSGS_ALL) {
 705                                 is_seen = 0;
 706                         }
 707                         else {
 708                                 is_seen = is_msg_in_sequence_set(
 709                                                         vbuf.v_seen, thismsg);
 710                                 if (is_seen) lastold = thismsg;
 711                         }
 712                         if ((thismsg > 0L)
 713                             && (
 714
 715                                        (mode == MSGS_ALL)
 716                                        || ((mode == MSGS_OLD) && (is_seen))
 717                                        || ((mode == MSGS_NEW) && (!is_seen))
 718                                        || ((mode == MSGS_LAST) && (a >= (num_msgs - ref)))
 719                                    || ((mode == MSGS_FIRST) && (a < ref))
 720                                 || ((mode == MSGS_GT) && (thismsg > ref))
 721                                 || ((mode == MSGS_EQ) && (thismsg == ref))
 722                             )
 723                             ) {
 724                                 if ((mode == MSGS_NEW) && (CC->user.flags & US_LASTOLD) && (lastold > 0L) && (printed_lastold == 0) && (!is_seen)) {
 725                                         if (CallBack)
 726                                                 CallBack(lastold, userdata);
 727                                         printed_lastold = 1;
 728                                         ++num_processed;
 729                                 }
 730                                 if (CallBack) CallBack(thismsg, userdata);
 731                                 ++num_processed;
 732                         }
 733                 }
 734         cdb_free(cdbfr);        /* Clean up */
 735         if (need_to_free_re) regfree(&re);
 736         return num_processed;
 737 }
 738
 739
 740
 741 /*
 742  * cmd_msgs()  -  get list of message #'s in this room
 743  *              implements the MSGS server command using CtdlForEachMessage()
 744  */
 745 void cmd_msgs(char *cmdbuf)
 746 {
 747         int mode = 0;
 748         char which[16];
 749         char buf[256];
 750         char tfield[256];
 751         char tvalue[256];
 752         int cm_ref = 0;
 753         int i;
 754         int with_template = 0;
 755         struct CtdlMessage *template = NULL;
 756         int with_headers = 0;
 757         char search_string[1024];
 758
 759         extract_token(which, cmdbuf, 0, '|', sizeof which);
 760         cm_ref = extract_int(cmdbuf, 1);
 761         extract_token(search_string, cmdbuf, 1, '|', sizeof search_string);
 762         with_template = extract_int(cmdbuf, 2);
 763         with_headers = extract_int(cmdbuf, 3);
 764
 765         strcat(which, "   ");
 766         if (!strncasecmp(which, "OLD", 3))
 767                 mode = MSGS_OLD;
 768         else if (!strncasecmp(which, "NEW", 3))
 769                 mode = MSGS_NEW;
 770         else if (!strncasecmp(which, "FIRST", 5))
 771                 mode = MSGS_FIRST;
 772         else if (!strncasecmp(which, "LAST", 4))
 773                 mode = MSGS_LAST;
 774         else if (!strncasecmp(which, "GT", 2))
 775                 mode = MSGS_GT;
 776         else if (!strncasecmp(which, "SEARCH", 6))
 777                 mode = MSGS_SEARCH;
 778         else
 779                 mode = MSGS_ALL;
 780
 781         if ((!(CC->logged_in)) && (!(CC->internal_pgm))) {
 782                 cprintf("%d not logged in\n", ERROR + NOT_LOGGED_IN);
 783                 return;
 784         }
 785
 786         if ( (mode == MSGS_SEARCH) && (!config.c_enable_fulltext) ) {
 787                 cprintf("%d Full text index is not enabled on this server.\n",
 788                         ERROR + CMD_NOT_SUPPORTED);
 789                 return;
 790         }
 791
 792         if (with_template) {
 793                 unbuffer_output();
 794                 cprintf("%d Send template then receive message list\n",
 795                         START_CHAT_MODE);
 796                 template = (struct CtdlMessage *)
 797                         malloc(sizeof(struct CtdlMessage));
 798                 memset(template, 0, sizeof(struct CtdlMessage));
 799                 template->cm_magic = CTDLMESSAGE_MAGIC;
 800                 template->cm_anon_type = MES_NORMAL;
 801
 802                 while(client_getln(buf, sizeof buf) >= 0 && strcmp(buf,"000")) {
 803                         extract_token(tfield, buf, 0, '|', sizeof tfield);
 804                         extract_token(tvalue, buf, 1, '|', sizeof tvalue);
 805                         for (i='A'; i<='Z'; ++i) if (msgkeys[i]!=NULL) {
 806                                 if (!strcasecmp(tfield, msgkeys[i])) {
 807                                         template->cm_fields[i] =
 808                                                 strdup(tvalue);
 809                                 }
 810                         }
 811                 }
 812                 buffer_output();
 813         }
 814         else {
 815                 cprintf("%d  \n", LISTING_FOLLOWS);
 816         }
 817
 818         CtdlForEachMessage(mode,
 819                         ( (mode == MSGS_SEARCH) ? 0 : cm_ref ),
 820                         ( (mode == MSGS_SEARCH) ? search_string : NULL ),
 821                         NULL,
 822                         template,
 823                         (with_headers ? headers_listing : simple_listing),
 824                         NULL
 825         );
 826         if (template != NULL) CtdlFreeMessage(template);
 827         cprintf("000\n");
 828 }
 829
 830
 831
 832
 833 /*
 834  * help_subst()  -  support routine for help file viewer
 835  */
 836 void help_subst(char *strbuf, char *source, char *dest)
 837 {
 838         char workbuf[SIZ];
 839         int p;
 840
 841         while (p = pattern2(strbuf, source), (p >= 0)) {
 842                 strcpy(workbuf, &strbuf[p + strlen(source)]);
 843                 strcpy(&strbuf[p], dest);
 844                 strcat(strbuf, workbuf);
 845         }
 846 }
 847
 848
 849 void do_help_subst(char *buffer)
 850 {
 851         char buf2[16];
 852
 853         help_subst(buffer, "^nodename", config.c_nodename);
 854         help_subst(buffer, "^humannode", config.c_humannode);
 855         help_subst(buffer, "^fqdn", config.c_fqdn);
 856         help_subst(buffer, "^username", CC->user.fullname);
 857         snprintf(buf2, sizeof buf2, "%ld", CC->user.usernum);
 858         help_subst(buffer, "^usernum", buf2);
 859         help_subst(buffer, "^sysadm", config.c_sysadm);
 860         help_subst(buffer, "^variantname", CITADEL);
 861         snprintf(buf2, sizeof buf2, "%d", config.c_maxsessions);
 862         help_subst(buffer, "^maxsessions", buf2);
 863         help_subst(buffer, "^bbsdir", ctdl_message_dir);
 864 }
 865
 866
 867
 868 /*
 869  * memfmout()  -  Citadel text formatter and paginator.
 870  *           Although the original purpose of this routine was to format
 871  *           text to the reader's screen width, all we're really using it
 872  *           for here is to format text out to 80 columns before sending it
 873  *           to the client.  The client software may reformat it again.
 874  */
 875 void memfmout(
 876         char *mptr,             /* where are we going to get our text from? */
 877         char subst,             /* nonzero if we should do substitutions */
 878         char *nl)               /* string to terminate lines with */
 879 {
 880         int a, b, c;
 881         int real = 0;
 882         int old = 0;
 883         cit_uint8_t ch;
 884         char aaa[140];
 885         char buffer[SIZ];
 886         static int width = 80;
 887
 888         strcpy(aaa, "");
 889         old = 255;
 890         strcpy(buffer, "");
 891         c = 1;                  /* c is the current pos */
 892
 893         do {
 894                 if (subst) {
 895                         while (ch = *mptr, ((ch != 0) && (strlen(buffer) < 126))) {
 896                                 ch = *mptr++;
 897                                 buffer[strlen(buffer) + 1] = 0;
 898                                 buffer[strlen(buffer)] = ch;
 899                         }
 900
 901                         if (buffer[0] == '^')
 902                                 do_help_subst(buffer);
 903
 904                         buffer[strlen(buffer) + 1] = 0;
 905                         a = buffer[0];
 906                         strcpy(buffer, &buffer[1]);
 907                 } else {
 908                         ch = *mptr++;
 909                 }
 910
 911                 old = real;
 912                 real = ch;
 913
 914                 if (((ch == 13) || (ch == 10)) && (old != 13) && (old != 10)) {
 915                         ch = 32;
 916                 }
 917                 if (((old == 13) || (old == 10)) && (isspace(real))) {
 918                         cprintf("%s", nl);
 919                         c = 1;
 920                 }
 921                 if (ch > 32) {
 922                         if (((strlen(aaa) + c) > (width - 5)) && (strlen(aaa) > (width - 5))) {
 923                                 cprintf("%s%s", nl, aaa);
 924                                 c = strlen(aaa);
 925                                 aaa[0] = 0;
 926                         }
 927                         b = strlen(aaa);
 928                         aaa[b] = ch;
 929                         aaa[b + 1] = 0;
 930                 }
 931                 if (ch == 32) {
 932                         if ((strlen(aaa) + c) > (width - 5)) {
 933                                 cprintf("%s", nl);
 934                                 c = 1;
 935                         }
 936                         cprintf("%s ", aaa);
 937                         ++c;
 938                         c = c + strlen(aaa);
 939                         strcpy(aaa, "");
 940                 }
 941                 if ((ch == 13) || (ch == 10)) {
 942                         cprintf("%s%s", aaa, nl);
 943                         c = 1;
 944                         strcpy(aaa, "");
 945                 }
 946
 947         } while (ch > 0);
 948
 949         cprintf("%s%s", aaa, nl);
 950 }
 951
 952
 953
 954 /*
 955  * Callback function for mime parser that simply lists the part
 956  */
 957 void list_this_part(char *name, char *filename, char *partnum, char *disp,
 958                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
 959                     char *cbid, void *cbuserdata)
 960 {
 961         struct ma_info *ma;
 962
 963         ma = (struct ma_info *)cbuserdata;
 964         if (ma->is_ma == 0) {
 965                 cprintf("part=%s|%s|%s|%s|%s|%ld|%s\n",
 966                         name, filename, partnum, disp, cbtype, (long)length, cbid);
 967         }
 968 }
 969
 970 /*
 971  * Callback function for multipart prefix
 972  */
 973 void list_this_pref(char *name, char *filename, char *partnum, char *disp,
 974                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
 975                     char *cbid, void *cbuserdata)
 976 {
 977         struct ma_info *ma;
 978
 979         ma = (struct ma_info *)cbuserdata;
 980         if (!strcasecmp(cbtype, "multipart/alternative")) {
 981                 ++ma->is_ma;
 982         }
 983
 984         if (ma->is_ma == 0) {
 985                 cprintf("pref=%s|%s\n", partnum, cbtype);
 986         }
 987 }
 988
 989 /*
 990  * Callback function for multipart sufffix
 991  */
 992 void list_this_suff(char *name, char *filename, char *partnum, char *disp,
 993                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
 994                     char *cbid, void *cbuserdata)
 995 {
 996         struct ma_info *ma;
 997
 998         ma = (struct ma_info *)cbuserdata;
 999         if (ma->is_ma == 0) {
1000                 cprintf("suff=%s|%s\n", partnum, cbtype);
1001         }
1002         if (!strcasecmp(cbtype, "multipart/alternative")) {
1003                 --ma->is_ma;
1004         }
1005 }
1006
1007
1008 /*
1009  * Callback function for mime parser that opens a section for downloading
1010  */
1011 void mime_download(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 rv = 0;
1016
1017         /* Silently go away if there's already a download open. */
1018         if (CC->download_fp != NULL)
1019                 return;
1020
1021         if (
1022                 (!IsEmptyStr(partnum) && (!strcasecmp(CC->download_desired_section, partnum)))
1023         ||      (!IsEmptyStr(cbid) && (!strcasecmp(CC->download_desired_section, cbid)))
1024         ) {
1025                 CC->download_fp = tmpfile();
1026                 if (CC->download_fp == NULL)
1027                         return;
1028
1029                 rv = fwrite(content, length, 1, CC->download_fp);
1030                 fflush(CC->download_fp);
1031                 rewind(CC->download_fp);
1032
1033                 OpenCmdResult(filename, cbtype);
1034         }
1035 }
1036
1037
1038
1039 /*
1040  * Callback function for mime parser that outputs a section all at once.
1041  * We can specify the desired section by part number *or* content-id.
1042  */
1043 void mime_spew_section(char *name, char *filename, char *partnum, char *disp,
1044                    void *content, char *cbtype, char *cbcharset, size_t length,
1045                    char *encoding, char *cbid, void *cbuserdata)
1046 {
1047         int *found_it = (int *)cbuserdata;
1048
1049         if (
1050                 (!IsEmptyStr(partnum) && (!strcasecmp(CC->download_desired_section, partnum)))
1051         ||      (!IsEmptyStr(cbid) && (!strcasecmp(CC->download_desired_section, cbid)))
1052         ) {
1053                 *found_it = 1;
1054                 cprintf("%d %d|-1|%s|%s\n",
1055                         BINARY_FOLLOWS,
1056                         (int)length,
1057                         filename,
1058                         cbtype
1059                 );
1060                 client_write(content, length);
1061         }
1062 }
1063
1064
1065
1066 /*
1067  * Load a message from disk into memory.
1068  * This is used by CtdlOutputMsg() and other fetch functions.
1069  *
1070  * NOTE: Caller is responsible for freeing the returned CtdlMessage struct
1071  *       using the CtdlMessageFree() function.
1072  */
1073 struct CtdlMessage *CtdlFetchMessage(long msgnum, int with_body)
1074 {
1075         struct cdbdata *dmsgtext;
1076         struct CtdlMessage *ret = NULL;
1077         char *mptr;
1078         char *upper_bound;
1079         cit_uint8_t ch;
1080         cit_uint8_t field_header;
1081
1082         CtdlLogPrintf(CTDL_DEBUG, "CtdlFetchMessage(%ld, %d)\n", msgnum, with_body);
1083
1084         dmsgtext = cdb_fetch(CDB_MSGMAIN, &msgnum, sizeof(long));
1085         if (dmsgtext == NULL) {
1086                 return NULL;
1087         }
1088         mptr = dmsgtext->ptr;
1089         upper_bound = mptr + dmsgtext->len;
1090
1091         /* Parse the three bytes that begin EVERY message on disk.
1092          * The first is always 0xFF, the on-disk magic number.
1093          * The second is the anonymous/public type byte.
1094          * The third is the format type byte (vari, fixed, or MIME).
1095          */
1096         ch = *mptr++;
1097         if (ch != 255) {
1098                 CtdlLogPrintf(CTDL_ERR, "Message %ld appears to be corrupted.\n", msgnum);
1099                 cdb_free(dmsgtext);
1100                 return NULL;
1101         }
1102         ret = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
1103         memset(ret, 0, sizeof(struct CtdlMessage));
1104
1105         ret->cm_magic = CTDLMESSAGE_MAGIC;
1106         ret->cm_anon_type = *mptr++;    /* Anon type byte */
1107         ret->cm_format_type = *mptr++;  /* Format type byte */
1108
1109         /*
1110          * The rest is zero or more arbitrary fields.  Load them in.
1111          * We're done when we encounter either a zero-length field or
1112          * have just processed the 'M' (message text) field.
1113          */
1114         do {
1115                 if (mptr >= upper_bound) {
1116                         break;
1117                 }
1118                 field_header = *mptr++;
1119                 ret->cm_fields[field_header] = strdup(mptr);
1120
1121                 while (*mptr++ != 0);   /* advance to next field */
1122
1123         } while ((mptr < upper_bound) && (field_header != 'M'));
1124
1125         cdb_free(dmsgtext);
1126
1127         /* Always make sure there's something in the msg text field.  If
1128          * it's NULL, the message text is most likely stored separately,
1129          * so go ahead and fetch that.  Failing that, just set a dummy
1130          * body so other code doesn't barf.
1131          */
1132         if ( (ret->cm_fields['M'] == NULL) && (with_body) ) {
1133                 dmsgtext = cdb_fetch(CDB_BIGMSGS, &msgnum, sizeof(long));
1134                 if (dmsgtext != NULL) {
1135                         ret->cm_fields['M'] = strdup(dmsgtext->ptr);
1136                         cdb_free(dmsgtext);
1137                 }
1138         }
1139         if (ret->cm_fields['M'] == NULL) {
1140                 ret->cm_fields['M'] = strdup("\r\n\r\n (no text)\r\n");
1141         }
1142
1143         /* Perform "before read" hooks (aborting if any return nonzero) */
1144         if (PerformMessageHooks(ret, EVT_BEFOREREAD) > 0) {
1145                 CtdlFreeMessage(ret);
1146                 return NULL;
1147         }
1148
1149         return (ret);
1150 }
1151
1152
1153 /*
1154  * Returns 1 if the supplied pointer points to a valid Citadel message.
1155  * If the pointer is NULL or the magic number check fails, returns 0.
1156  */
1157 int is_valid_message(struct CtdlMessage *msg) {
1158         if (msg == NULL)
1159                 return 0;
1160         if ((msg->cm_magic) != CTDLMESSAGE_MAGIC) {
1161                 CtdlLogPrintf(CTDL_WARNING, "is_valid_message() -- self-check failed\n");
1162                 return 0;
1163         }
1164         return 1;
1165 }
1166
1167
1168 /*
1169  * 'Destructor' for struct CtdlMessage
1170  */
1171 void CtdlFreeMessage(struct CtdlMessage *msg)
1172 {
1173         int i;
1174
1175         if (is_valid_message(msg) == 0)
1176         {
1177                 if (msg != NULL) free (msg);
1178                 return;
1179         }
1180
1181         for (i = 0; i < 256; ++i)
1182                 if (msg->cm_fields[i] != NULL) {
1183                         free(msg->cm_fields[i]);
1184                 }
1185
1186         msg->cm_magic = 0;      /* just in case */
1187         free(msg);
1188 }
1189
1190
1191 /*
1192  * Pre callback function for multipart/alternative
1193  *
1194  * NOTE: this differs from the standard behavior for a reason.  Normally when
1195  *       displaying multipart/alternative you want to show the _last_ usable
1196  *       format in the message.  Here we show the _first_ one, because it's
1197  *       usually text/plain.  Since this set of functions is designed for text
1198  *       output to non-MIME-aware clients, this is the desired behavior.
1199  *
1200  */
1201 void fixed_output_pre(char *name, char *filename, char *partnum, char *disp,
1202                 void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1203                 char *cbid, void *cbuserdata)
1204 {
1205         struct ma_info *ma;
1206
1207         ma = (struct ma_info *)cbuserdata;
1208         CtdlLogPrintf(CTDL_DEBUG, "fixed_output_pre() type=<%s>\n", cbtype);
1209         if (!strcasecmp(cbtype, "multipart/alternative")) {
1210                 ++ma->is_ma;
1211                 ma->did_print = 0;
1212         }
1213         if (!strcasecmp(cbtype, "message/rfc822")) {
1214                 ++ma->freeze;
1215         }
1216 }
1217
1218 /*
1219  * Post callback function for multipart/alternative
1220  */
1221 void fixed_output_post(char *name, char *filename, char *partnum, char *disp,
1222                 void *content, char *cbtype, char *cbcharset, size_t length,
1223                 char *encoding, char *cbid, void *cbuserdata)
1224 {
1225         struct ma_info *ma;
1226
1227         ma = (struct ma_info *)cbuserdata;
1228         CtdlLogPrintf(CTDL_DEBUG, "fixed_output_post() type=<%s>\n", cbtype);
1229         if (!strcasecmp(cbtype, "multipart/alternative")) {
1230                 --ma->is_ma;
1231                 ma->did_print = 0;
1232         }
1233         if (!strcasecmp(cbtype, "message/rfc822")) {
1234                 --ma->freeze;
1235         }
1236 }
1237
1238 /*
1239  * Inline callback function for mime parser that wants to display text
1240  */
1241 void fixed_output(char *name, char *filename, char *partnum, char *disp,
1242                 void *content, char *cbtype, char *cbcharset, size_t length,
1243                 char *encoding, char *cbid, void *cbuserdata)
1244 {
1245         char *ptr;
1246         char *wptr;
1247         size_t wlen;
1248         struct ma_info *ma;
1249
1250         ma = (struct ma_info *)cbuserdata;
1251
1252         CtdlLogPrintf(CTDL_DEBUG,
1253                 "fixed_output() part %s: %s (%s) (%ld bytes)\n",
1254                 partnum, filename, cbtype, (long)length);
1255
1256         /*
1257          * If we're in the middle of a multipart/alternative scope and
1258          * we've already printed another section, skip this one.
1259          */
1260         if ( (ma->is_ma) && (ma->did_print) ) {
1261                 CtdlLogPrintf(CTDL_DEBUG, "Skipping part %s (%s)\n", partnum, cbtype);
1262                 return;
1263         }
1264         ma->did_print = 1;
1265
1266         if ( (!strcasecmp(cbtype, "text/plain"))
1267            || (IsEmptyStr(cbtype)) ) {
1268                 wptr = content;
1269                 if (length > 0) {
1270                         client_write(wptr, length);
1271                         if (wptr[length-1] != '\n') {
1272                                 cprintf("\n");
1273                         }
1274                 }
1275                 return;
1276         }
1277
1278         if (!strcasecmp(cbtype, "text/html")) {
1279                 ptr = html_to_ascii(content, length, 80, 0);
1280                 wlen = strlen(ptr);
1281                 client_write(ptr, wlen);
1282                 if (ptr[wlen-1] != '\n') {
1283                         cprintf("\n");
1284                 }
1285                 free(ptr);
1286                 return;
1287         }
1288
1289         if (ma->use_fo_hooks) {
1290                 if (PerformFixedOutputHooks(cbtype, content, length)) {
1291                 /* above function returns nonzero if it handled the part */
1292                         return;
1293                 }
1294         }
1295
1296         if (strncasecmp(cbtype, "multipart/", 10)) {
1297                 cprintf("Part %s: %s (%s) (%ld bytes)\r\n",
1298                         partnum, filename, cbtype, (long)length);
1299                 return;
1300         }
1301 }
1302
1303 /*
1304  * The client is elegant and sophisticated and wants to be choosy about
1305  * MIME content types, so figure out which multipart/alternative part
1306  * we're going to send.
1307  *
1308  * We use a system of weights.  When we find a part that matches one of the
1309  * MIME types we've declared as preferential, we can store it in ma->chosen_part
1310  * and then set ma->chosen_pref to that MIME type's position in our preference
1311  * list.  If we then hit another match, we only replace the first match if
1312  * the preference value is lower.
1313  */
1314 void choose_preferred(char *name, char *filename, char *partnum, char *disp,
1315                 void *content, char *cbtype, char *cbcharset, size_t length,
1316                 char *encoding, char *cbid, void *cbuserdata)
1317 {
1318         char buf[1024];
1319         int i;
1320         struct ma_info *ma;
1321
1322         ma = (struct ma_info *)cbuserdata;
1323
1324         // NOTE: REMOVING THIS CONDITIONAL FIXES BUG 220
1325         //       http://bugzilla.citadel.org/show_bug.cgi?id=220
1326         // I don't know if there are any side effects!  Please TEST TEST TEST
1327         //if (ma->is_ma > 0) {
1328
1329         for (i=0; i<num_tokens(CC->preferred_formats, '|'); ++i) {
1330                 extract_token(buf, CC->preferred_formats, i, '|', sizeof buf);
1331                 if ( (!strcasecmp(buf, cbtype)) && (!ma->freeze) ) {
1332                         if (i < ma->chosen_pref) {
1333                                 CtdlLogPrintf(CTDL_DEBUG, "Setting chosen part: <%s>\n", partnum);
1334                                 safestrncpy(ma->chosen_part, partnum, sizeof ma->chosen_part);
1335                                 ma->chosen_pref = i;
1336                         }
1337                 }
1338         }
1339 }
1340
1341 /*
1342  * Now that we've chosen our preferred part, output it.
1343  */
1344 void output_preferred(char *name, char *filename, char *partnum, char *disp,
1345                 void *content, char *cbtype, char *cbcharset, size_t length,
1346                 char *encoding, char *cbid, void *cbuserdata)
1347 {
1348         int i;
1349         char buf[128];
1350         int add_newline = 0;
1351         char *text_content;
1352         struct ma_info *ma;
1353
1354         ma = (struct ma_info *)cbuserdata;
1355
1356         /* This is not the MIME part you're looking for... */
1357         if (strcasecmp(partnum, ma->chosen_part)) return;
1358
1359         /* If the content-type of this part is in our preferred formats
1360          * list, we can simply output it verbatim.
1361          */
1362         for (i=0; i<num_tokens(CC->preferred_formats, '|'); ++i) {
1363                 extract_token(buf, CC->preferred_formats, i, '|', sizeof buf);
1364                 if (!strcasecmp(buf, cbtype)) {
1365                         /* Yeah!  Go!  W00t!! */
1366
1367                         text_content = (char *)content;
1368                         if (text_content[length-1] != '\n') {
1369                                 ++add_newline;
1370                         }
1371                         cprintf("Content-type: %s", cbtype);
1372                         if (!IsEmptyStr(cbcharset)) {
1373                                 cprintf("; charset=%s", cbcharset);
1374                         }
1375                         cprintf("\nContent-length: %d\n",
1376                                 (int)(length + add_newline) );
1377                         if (!IsEmptyStr(encoding)) {
1378                                 cprintf("Content-transfer-encoding: %s\n", encoding);
1379                         }
1380                         else {
1381                                 cprintf("Content-transfer-encoding: 7bit\n");
1382                         }
1383                         cprintf("X-Citadel-MSG4-Partnum: %s\n", partnum);
1384                         cprintf("\n");
1385                         client_write(content, length);
1386                         if (add_newline) cprintf("\n");
1387                         return;
1388                 }
1389         }
1390
1391         /* No translations required or possible: output as text/plain */
1392         cprintf("Content-type: text/plain\n\n");
1393         fixed_output(name, filename, partnum, disp, content, cbtype, cbcharset,
1394                         length, encoding, cbid, cbuserdata);
1395 }
1396
1397
1398 struct encapmsg {
1399         char desired_section[64];
1400         char *msg;
1401         size_t msglen;
1402 };
1403
1404
1405 /*
1406  * Callback function for
1407  */
1408 void extract_encapsulated_message(char *name, char *filename, char *partnum, char *disp,
1409                    void *content, char *cbtype, char *cbcharset, size_t length,
1410                    char *encoding, char *cbid, void *cbuserdata)
1411 {
1412         struct encapmsg *encap;
1413
1414         encap = (struct encapmsg *)cbuserdata;
1415
1416         /* Only proceed if this is the desired section... */
1417         if (!strcasecmp(encap->desired_section, partnum)) {
1418                 encap->msglen = length;
1419                 encap->msg = malloc(length + 2);
1420                 memcpy(encap->msg, content, length);
1421                 return;
1422         }
1423
1424 }
1425
1426
1427
1428
1429 /*
1430  * Get a message off disk.  (returns om_* values found in msgbase.h)
1431  *
1432  */
1433 int CtdlOutputMsg(long msg_num,         /* message number (local) to fetch */
1434                   int mode,             /* how would you like that message? */
1435                   int headers_only,     /* eschew the message body? */
1436                   int do_proto,         /* do Citadel protocol responses? */
1437                   int crlf,             /* Use CRLF newlines instead of LF? */
1438                   char *section,        /* NULL or a message/rfc822 section */
1439                   int flags             /* should the bessage be exported clean? */
1440 ) {
1441         struct CtdlMessage *TheMessage = NULL;
1442         int retcode = om_no_such_msg;
1443         struct encapmsg encap;
1444
1445         CtdlLogPrintf(CTDL_DEBUG, "CtdlOutputMsg() msgnum=%ld, mode=%d, section=%s\n",
1446                 msg_num, mode,
1447                 (section ? section : "<>")
1448         );
1449
1450         if ((!(CC->logged_in)) && (!(CC->internal_pgm))) {
1451                 if (do_proto) cprintf("%d Not logged in.\n",
1452                         ERROR + NOT_LOGGED_IN);
1453                 return(om_not_logged_in);
1454         }
1455
1456         /* FIXME: check message id against msglist for this room */
1457
1458         /*
1459          * Fetch the message from disk.  If we're in HEADERS_FAST mode,
1460          * request that we don't even bother loading the body into memory.
1461          */
1462         if (headers_only == HEADERS_FAST) {
1463                 TheMessage = CtdlFetchMessage(msg_num, 0);
1464         }
1465         else {
1466                 TheMessage = CtdlFetchMessage(msg_num, 1);
1467         }
1468
1469         if (TheMessage == NULL) {
1470                 if (do_proto) cprintf("%d Can't locate msg %ld on disk\n",
1471                         ERROR + MESSAGE_NOT_FOUND, msg_num);
1472                 return(om_no_such_msg);
1473         }
1474
1475         /* Here is the weird form of this command, to process only an
1476          * encapsulated message/rfc822 section.
1477          */
1478         if (section) if (!IsEmptyStr(section)) if (strcmp(section, "0")) {
1479                 memset(&encap, 0, sizeof encap);
1480                 safestrncpy(encap.desired_section, section, sizeof encap.desired_section);
1481                 mime_parser(TheMessage->cm_fields['M'],
1482                         NULL,
1483                         *extract_encapsulated_message,
1484                         NULL, NULL, (void *)&encap, 0
1485                 );
1486                 CtdlFreeMessage(TheMessage);
1487                 TheMessage = NULL;
1488
1489                 if (encap.msg) {
1490                         encap.msg[encap.msglen] = 0;
1491                         TheMessage = convert_internet_message(encap.msg);
1492                         encap.msg = NULL;       /* no free() here, TheMessage owns it now */
1493
1494                         /* Now we let it fall through to the bottom of this
1495                          * function, because TheMessage now contains the
1496                          * encapsulated message instead of the top-level
1497                          * message.  Isn't that neat?
1498                          */
1499
1500                 }
1501                 else {
1502                         if (do_proto) cprintf("%d msg %ld has no part %s\n",
1503                                 ERROR + MESSAGE_NOT_FOUND, msg_num, section);
1504                         retcode = om_no_such_msg;
1505                 }
1506
1507         }
1508
1509         /* Ok, output the message now */
1510         retcode = CtdlOutputPreLoadedMsg(TheMessage, mode, headers_only, do_proto, crlf, flags);
1511         CtdlFreeMessage(TheMessage);
1512
1513         return(retcode);
1514 }
1515
1516
1517 char *qp_encode_email_addrs(char *source)
1518 {
1519         char user[256], node[256], name[256];
1520         const char headerStr[] = "=?UTF-8?Q?";
1521         char *Encoded;
1522         char *EncodedName;
1523         char *nPtr;
1524         int need_to_encode = 0;
1525         long SourceLen;
1526         long EncodedMaxLen;
1527         long nColons = 0;
1528         long *AddrPtr;
1529         long *AddrUtf8;
1530         long nAddrPtrMax = 50;
1531         long nmax;
1532         int InQuotes = 0;
1533         int i, n;
1534
1535         if (source == NULL) return source;
1536         if (IsEmptyStr(source)) return source;
1537
1538         AddrPtr = malloc (sizeof (long) * nAddrPtrMax);
1539         AddrUtf8 = malloc (sizeof (long) * nAddrPtrMax);
1540         memset(AddrUtf8, 0, sizeof (long) * nAddrPtrMax);
1541         *AddrPtr = 0;
1542         i = 0;
1543         while (!IsEmptyStr (&source[i])) {
1544                 if (nColons >= nAddrPtrMax){
1545                         long *ptr;
1546
1547                         ptr = (long *) malloc(sizeof (long) * nAddrPtrMax * 2);
1548                         memcpy (ptr, AddrPtr, sizeof (long) * nAddrPtrMax);
1549                         free (AddrPtr), AddrPtr = ptr;
1550
1551                         ptr = (long *) malloc(sizeof (long) * nAddrPtrMax * 2);
1552                         memset(&ptr[nAddrPtrMax], 0,
1553                                sizeof (long) * nAddrPtrMax);
1554
1555                         memcpy (ptr, AddrUtf8, sizeof (long) * nAddrPtrMax);
1556                         free (AddrUtf8), AddrUtf8 = ptr;
1557                         nAddrPtrMax *= 2;
1558                 }
1559                 if (((unsigned char) source[i] < 32) ||
1560                     ((unsigned char) source[i] > 126)) {
1561                         need_to_encode = 1;
1562                         AddrUtf8[nColons] = 1;
1563                 }
1564                 if (source[i] == '"')
1565                         InQuotes = !InQuotes;
1566                 if (!InQuotes && source[i] == ',') {
1567                         AddrPtr[nColons] = i;
1568                         nColons++;
1569                 }
1570                 i++;
1571         }
1572         if (need_to_encode == 0) {
1573                 free(AddrPtr);
1574                 free(AddrUtf8);
1575                 return source;
1576         }
1577
1578         SourceLen = i;
1579         EncodedMaxLen = nColons * (sizeof(headerStr) + 3) + SourceLen * 3;
1580         Encoded = (char*) malloc (EncodedMaxLen);
1581
1582         for (i = 0; i < nColons; i++)
1583                 source[AddrPtr[i]++] = '\0';
1584
1585         nPtr = Encoded;
1586         *nPtr = '\0';
1587         for (i = 0; i < nColons && nPtr != NULL; i++) {
1588                 nmax = EncodedMaxLen - (nPtr - Encoded);
1589                 if (AddrUtf8[i]) {
1590                         process_rfc822_addr(&source[AddrPtr[i]],
1591                                             user,
1592                                             node,
1593                                             name);
1594                         /* TODO: libIDN here ! */
1595                         if (IsEmptyStr(name)) {
1596                                 n = snprintf(nPtr, nmax,
1597                                              (i==0)?"%s@%s" : ",%s@%s",
1598                                              user, node);
1599                         }
1600                         else {
1601                                 EncodedName = rfc2047encode(name, strlen(name));
1602                                 n = snprintf(nPtr, nmax,
1603                                              (i==0)?"%s <%s@%s>" : ",%s <%s@%s>",
1604                                              EncodedName, user, node);
1605                                 free(EncodedName);
1606                         }
1607                 }
1608                 else {
1609                         n = snprintf(nPtr, nmax,
1610                                      (i==0)?"%s" : ",%s",
1611                                      &source[AddrPtr[i]]);
1612                 }
1613                 if (n > 0 )
1614                         nPtr += n;
1615                 else {
1616                         char *ptr, *nnPtr;
1617                         ptr = (char*) malloc(EncodedMaxLen * 2);
1618                         memcpy(ptr, Encoded, EncodedMaxLen);
1619                         nnPtr = ptr + (nPtr - Encoded), nPtr = nnPtr;
1620                         free(Encoded), Encoded = ptr;
1621                         EncodedMaxLen *= 2;
1622                         i--; /* do it once more with properly lengthened buffer */
1623                 }
1624         }
1625         for (i = 0; i < nColons; i++)
1626                 source[--AddrPtr[i]] = ',';
1627         free(AddrUtf8);
1628         free(AddrPtr);
1629         return Encoded;
1630 }
1631
1632
1633 /* If the last item in a list of recipients was truncated to a partial address,
1634  * remove it completely in order to avoid choking libSieve
1635  */
1636 void sanitize_truncated_recipient(char *str)
1637 {
1638         if (!str) return;
1639         if (num_tokens(str, ',') < 2) return;
1640
1641         int len = strlen(str);
1642         if (len < 900) return;
1643         if (len > 998) str[998] = 0;
1644
1645         char *cptr = strrchr(str, ',');
1646         if (!cptr) return;
1647
1648         char *lptr = strchr(cptr, '<');
1649         char *rptr = strchr(cptr, '>');
1650
1651         if ( (lptr) && (rptr) && (rptr > lptr) ) return;
1652
1653         *cptr = 0;
1654 }
1655
1656
1657
1658 /*
1659  * Get a message off disk.  (returns om_* values found in msgbase.h)
1660  */
1661 int CtdlOutputPreLoadedMsg(
1662                 struct CtdlMessage *TheMessage,
1663                 int mode,               /* how would you like that message? */
1664                 int headers_only,       /* eschew the message body? */
1665                 int do_proto,           /* do Citadel protocol responses? */
1666                 int crlf,               /* Use CRLF newlines instead of LF? */
1667                 int flags               /* should the bessage be exported clean? */
1668 ) {
1669         int i, j, k;
1670         char buf[SIZ];
1671         cit_uint8_t ch, prev_ch;
1672         char allkeys[30];
1673         char display_name[256];
1674         char *mptr, *mpptr;
1675         char *nl;       /* newline string */
1676         int suppress_f = 0;
1677         int subject_found = 0;
1678         struct ma_info ma;
1679
1680         /* Buffers needed for RFC822 translation.  These are all filled
1681          * using functions that are bounds-checked, and therefore we can
1682          * make them substantially smaller than SIZ.
1683          */
1684         char suser[100];
1685         char luser[100];
1686         char fuser[100];
1687         char snode[100];
1688         char mid[100];
1689         char datestamp[100];
1690
1691         CtdlLogPrintf(CTDL_DEBUG, "CtdlOutputPreLoadedMsg(TheMessage=%s, %d, %d, %d, %d\n",
1692                 ((TheMessage == NULL) ? "NULL" : "not null"),
1693                 mode, headers_only, do_proto, crlf);
1694
1695         strcpy(mid, "unknown");
1696         nl = (crlf ? "\r\n" : "\n");
1697
1698         if (!is_valid_message(TheMessage)) {
1699                 CtdlLogPrintf(CTDL_ERR,
1700                         "ERROR: invalid preloaded message for output\n");
1701                 cit_backtrace ();
1702                 return(om_no_such_msg);
1703         }
1704
1705         /* Are we downloading a MIME component? */
1706         if (mode == MT_DOWNLOAD) {
1707                 if (TheMessage->cm_format_type != FMT_RFC822) {
1708                         if (do_proto)
1709                                 cprintf("%d This is not a MIME message.\n",
1710                                 ERROR + ILLEGAL_VALUE);
1711                 } else if (CC->download_fp != NULL) {
1712                         if (do_proto) cprintf(
1713                                 "%d You already have a download open.\n",
1714                                 ERROR + RESOURCE_BUSY);
1715                 } else {
1716                         /* Parse the message text component */
1717                         mptr = TheMessage->cm_fields['M'];
1718                         mime_parser(mptr, NULL, *mime_download, NULL, NULL, NULL, 0);
1719                         /* If there's no file open by this time, the requested
1720                          * section wasn't found, so print an error
1721                          */
1722                         if (CC->download_fp == NULL) {
1723                                 if (do_proto) cprintf(
1724                                         "%d Section %s not found.\n",
1725                                         ERROR + FILE_NOT_FOUND,
1726                                         CC->download_desired_section);
1727                         }
1728                 }
1729                 return((CC->download_fp != NULL) ? om_ok : om_mime_error);
1730         }
1731
1732         /* MT_SPEW_SECTION is like MT_DOWNLOAD except it outputs the whole MIME part
1733          * in a single server operation instead of opening a download file.
1734          */
1735         if (mode == MT_SPEW_SECTION) {
1736                 if (TheMessage->cm_format_type != FMT_RFC822) {
1737                         if (do_proto)
1738                                 cprintf("%d This is not a MIME message.\n",
1739                                 ERROR + ILLEGAL_VALUE);
1740                 } else {
1741                         /* Parse the message text component */
1742                         int found_it = 0;
1743
1744                         mptr = TheMessage->cm_fields['M'];
1745                         mime_parser(mptr, NULL, *mime_spew_section, NULL, NULL, (void *)&found_it, 0);
1746                         /* If section wasn't found, print an error
1747                          */
1748                         if (!found_it) {
1749                                 if (do_proto) cprintf(
1750                                         "%d Section %s not found.\n",
1751                                         ERROR + FILE_NOT_FOUND,
1752                                         CC->download_desired_section);
1753                         }
1754                 }
1755                 return((CC->download_fp != NULL) ? om_ok : om_mime_error);
1756         }
1757
1758         /* now for the user-mode message reading loops */
1759         if (do_proto) cprintf("%d msg:\n", LISTING_FOLLOWS);
1760
1761         /* Does the caller want to skip the headers? */
1762         if (headers_only == HEADERS_NONE) goto START_TEXT;
1763
1764         /* Tell the client which format type we're using. */
1765         if ( (mode == MT_CITADEL) && (do_proto) ) {
1766                 cprintf("type=%d\n", TheMessage->cm_format_type);
1767         }
1768
1769         /* nhdr=yes means that we're only displaying headers, no body */
1770         if ( (TheMessage->cm_anon_type == MES_ANONONLY)
1771            && ((mode == MT_CITADEL) || (mode == MT_MIME))
1772            && (do_proto)
1773            ) {
1774                 cprintf("nhdr=yes\n");
1775         }
1776
1777         /* begin header processing loop for Citadel message format */
1778
1779         if ((mode == MT_CITADEL) || (mode == MT_MIME)) {
1780
1781                 safestrncpy(display_name, "<unknown>", sizeof display_name);
1782                 if (TheMessage->cm_fields['A']) {
1783                         strcpy(buf, TheMessage->cm_fields['A']);
1784                         if (TheMessage->cm_anon_type == MES_ANONONLY) {
1785                                 safestrncpy(display_name, "****", sizeof display_name);
1786                         }
1787                         else if (TheMessage->cm_anon_type == MES_ANONOPT) {
1788                                 safestrncpy(display_name, "anonymous", sizeof display_name);
1789                         }
1790                         else {
1791                                 safestrncpy(display_name, buf, sizeof display_name);
1792                         }
1793                         if ((is_room_aide())
1794                             && ((TheMessage->cm_anon_type == MES_ANONONLY)
1795                              || (TheMessage->cm_anon_type == MES_ANONOPT))) {
1796                                 size_t tmp = strlen(display_name);
1797                                 snprintf(&display_name[tmp],
1798                                          sizeof display_name - tmp,
1799                                          " [%s]", buf);
1800                         }
1801                 }
1802
1803                 /* Don't show Internet address for users on the
1804                  * local Citadel network.
1805                  */
1806                 suppress_f = 0;
1807                 if (TheMessage->cm_fields['N'] != NULL)
1808                    if (!IsEmptyStr(TheMessage->cm_fields['N']))
1809                       if (haschar(TheMessage->cm_fields['N'], '.') == 0) {
1810                         suppress_f = 1;
1811                 }
1812
1813                 /* Now spew the header fields in the order we like them. */
1814                 safestrncpy(allkeys, FORDER, sizeof allkeys);
1815                 for (i=0; i<strlen(allkeys); ++i) {
1816                         k = (int) allkeys[i];
1817                         if (k != 'M') {
1818                                 if ( (TheMessage->cm_fields[k] != NULL)
1819                                    && (msgkeys[k] != NULL) ) {
1820                                         if ((k == 'V') || (k == 'R') || (k == 'Y')) {
1821                                                 sanitize_truncated_recipient(TheMessage->cm_fields[k]);
1822                                         }
1823                                         if (k == 'A') {
1824                                                 if (do_proto) cprintf("%s=%s\n",
1825                                                         msgkeys[k],
1826                                                         display_name);
1827                                         }
1828                                         else if ((k == 'F') && (suppress_f)) {
1829                                                 /* do nothing */
1830                                         }
1831                                         /* Masquerade display name if needed */
1832                                         else {
1833                                                 if (do_proto) cprintf("%s=%s\n",
1834                                                         msgkeys[k],
1835                                                         TheMessage->cm_fields[k]
1836                                         );
1837                                         }
1838                                 }
1839                         }
1840                 }
1841
1842         }
1843
1844         /* begin header processing loop for RFC822 transfer format */
1845
1846         strcpy(suser, "");
1847         strcpy(luser, "");
1848         strcpy(fuser, "");
1849         strcpy(snode, NODENAME);
1850         if (mode == MT_RFC822) {
1851                 for (i = 0; i < 256; ++i) {
1852                         if (TheMessage->cm_fields[i]) {
1853                                 mptr = mpptr = TheMessage->cm_fields[i];
1854
1855                                 if (i == 'A') {
1856                                         safestrncpy(luser, mptr, sizeof luser);
1857                                         safestrncpy(suser, mptr, sizeof suser);
1858                                 }
1859                                 else if (i == 'Y') {
1860                                         if ((flags & QP_EADDR) != 0) {
1861                                                 mptr = qp_encode_email_addrs(mptr);
1862                                         }
1863                                         sanitize_truncated_recipient(mptr);
1864                                         cprintf("CC: %s%s", mptr, nl);
1865                                 }
1866                                 else if (i == 'P') {
1867                                         cprintf("Return-Path: %s%s", mptr, nl);
1868                                 }
1869                                 else if (i == 'L') {
1870                                         cprintf("List-ID: %s%s", mptr, nl);
1871                                 }
1872                                 else if (i == 'V') {
1873                                         if ((flags & QP_EADDR) != 0)
1874                                                 mptr = qp_encode_email_addrs(mptr);
1875                                         cprintf("Envelope-To: %s%s", mptr, nl);
1876                                 }
1877                                 else if (i == 'U') {
1878                                         cprintf("Subject: %s%s", mptr, nl);
1879                                         subject_found = 1;
1880                                 }
1881                                 else if (i == 'I')
1882                                         safestrncpy(mid, mptr, sizeof mid);
1883                                 else if (i == 'F')
1884                                         safestrncpy(fuser, mptr, sizeof fuser);
1885                                 /* else if (i == 'O')
1886                                         cprintf("X-Citadel-Room: %s%s",
1887                                                 mptr, nl); */
1888                                 else if (i == 'N')
1889                                         safestrncpy(snode, mptr, sizeof snode);
1890                                 else if (i == 'R')
1891                                 {
1892                                         if (haschar(mptr, '@') == 0)
1893                                         {
1894                                                 sanitize_truncated_recipient(mptr);
1895                                                 cprintf("To: %s@%s", mptr, config.c_fqdn);
1896                                                 cprintf("%s", nl);
1897                                         }
1898                                         else
1899                                         {
1900                                                 if ((flags & QP_EADDR) != 0) {
1901                                                         mptr = qp_encode_email_addrs(mptr);
1902                                                 }
1903                                                 sanitize_truncated_recipient(mptr);
1904                                                 cprintf("To: %s", mptr);
1905                                                 cprintf("%s", nl);
1906                                         }
1907                                 }
1908                                 else if (i == 'T') {
1909                                         datestring(datestamp, sizeof datestamp,
1910                                                 atol(mptr), DATESTRING_RFC822);
1911                                         cprintf("Date: %s%s", datestamp, nl);
1912                                 }
1913                                 else if (i == 'W') {
1914                                         cprintf("References: ");
1915                                         k = num_tokens(mptr, '|');
1916                                         for (j=0; j<k; ++j) {
1917                                                 extract_token(buf, mptr, j, '|', sizeof buf);
1918                                                 cprintf("<%s>", buf);
1919                                                 if (j == (k-1)) {
1920                                                         cprintf("%s", nl);
1921                                                 }
1922                                                 else {
1923                                                         cprintf(" ");
1924                                                 }
1925                                         }
1926                                 }
1927                                 if (mptr != mpptr)
1928                                         free (mptr);
1929                         }
1930                 }
1931                 if (subject_found == 0) {
1932                         cprintf("Subject: (no subject)%s", nl);
1933                 }
1934         }
1935
1936         for (i=0; !IsEmptyStr(&suser[i]); ++i) {
1937                 suser[i] = tolower(suser[i]);
1938                 if (!isalnum(suser[i])) suser[i]='_';
1939         }
1940
1941         if (mode == MT_RFC822) {
1942                 if (!strcasecmp(snode, NODENAME)) {
1943                         safestrncpy(snode, FQDN, sizeof snode);
1944                 }
1945
1946                 /* Construct a fun message id */
1947                 cprintf("Message-ID: <%s", mid);/// todo: this possibly breaks threadding mails.
1948                 if (strchr(mid, '@')==NULL) {
1949                         cprintf("@%s", snode);
1950                 }
1951                 cprintf(">%s", nl);
1952
1953                 if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONONLY)) {
1954                         cprintf("From: \"----\" <x@x.org>%s", nl);
1955                 }
1956                 else if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONOPT)) {
1957                         cprintf("From: \"anonymous\" <x@x.org>%s", nl);
1958                 }
1959                 else if (!IsEmptyStr(fuser)) {
1960                         cprintf("From: \"%s\" <%s>%s", luser, fuser, nl);
1961                 }
1962                 else {
1963                         cprintf("From: \"%s\" <%s@%s>%s", luser, suser, snode, nl);
1964                 }
1965
1966                 /* Blank line signifying RFC822 end-of-headers */
1967                 if (TheMessage->cm_format_type != FMT_RFC822) {
1968                         cprintf("%s", nl);
1969                 }
1970         }
1971
1972         /* end header processing loop ... at this point, we're in the text */
1973 START_TEXT:
1974         if (headers_only == HEADERS_FAST) goto DONE;
1975         mptr = TheMessage->cm_fields['M'];
1976
1977         /* Tell the client about the MIME parts in this message */
1978         if (TheMessage->cm_format_type == FMT_RFC822) {
1979                 if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
1980                         memset(&ma, 0, sizeof(struct ma_info));
1981                         mime_parser(mptr, NULL,
1982                                 (do_proto ? *list_this_part : NULL),
1983                                 (do_proto ? *list_this_pref : NULL),
1984                                 (do_proto ? *list_this_suff : NULL),
1985                                 (void *)&ma, 0);
1986                 }
1987                 else if (mode == MT_RFC822) {   /* unparsed RFC822 dump */
1988                         char *start_of_text = NULL;
1989                         start_of_text = strstr(mptr, "\n\r\n");
1990                         if (start_of_text == NULL) start_of_text = strstr(mptr, "\n\n");
1991                         if (start_of_text == NULL) start_of_text = mptr;
1992                         ++start_of_text;
1993                         start_of_text = strstr(start_of_text, "\n");
1994                         ++start_of_text;
1995
1996                         char outbuf[1024];
1997                         int outlen = 0;
1998                         int nllen = strlen(nl);
1999                         prev_ch = 0;
2000                         while (ch=*mptr, ch!=0) {
2001                                 if (ch==13) {
2002                                         /* do nothing */
2003                                 }
2004                                 else {
2005                                         if (
2006                                                 ((headers_only == HEADERS_NONE) && (mptr >= start_of_text))
2007                                            ||   ((headers_only == HEADERS_ONLY) && (mptr < start_of_text))
2008                                            ||   ((headers_only != HEADERS_NONE) && (headers_only != HEADERS_ONLY))
2009                                         ) {
2010                                                 if (ch == 10) {
2011                                                         sprintf(&outbuf[outlen], "%s", nl);
2012                                                         outlen += nllen;
2013                                                 }
2014                                                 else {
2015                                                         outbuf[outlen++] = ch;
2016                                                 }
2017                                         }
2018                                 }
2019                                 if (flags & ESC_DOT)
2020                                 {
2021                                         if ((prev_ch == 10) && (ch == '.') && ((*(mptr+1) == 13) || (*(mptr+1) == 10)))
2022                                         {
2023                                                 outbuf[outlen++] = '.';
2024                                         }
2025                                 }
2026                                 prev_ch = ch;
2027                                 ++mptr;
2028                                 if (outlen > 1000) {
2029                                         client_write(outbuf, outlen);
2030                                         outlen = 0;
2031                                 }
2032                         }
2033                         if (outlen > 0) {
2034                                 client_write(outbuf, outlen);
2035                                 outlen = 0;
2036                         }
2037
2038                         goto DONE;
2039                 }
2040         }
2041
2042         if (headers_only == HEADERS_ONLY) {
2043                 goto DONE;
2044         }
2045
2046         /* signify start of msg text */
2047         if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
2048                 if (do_proto) cprintf("text\n");
2049         }
2050
2051         /* If the format type on disk is 1 (fixed-format), then we want
2052          * everything to be output completely literally ... regardless of
2053          * what message transfer format is in use.
2054          */
2055         if (TheMessage->cm_format_type == FMT_FIXED) {
2056                 int buflen;
2057                 if (mode == MT_MIME) {
2058                         cprintf("Content-type: text/plain\n\n");
2059                 }
2060                 *buf = '\0';
2061                 buflen = 0;
2062                 while (ch = *mptr++, ch > 0) {
2063                         if (ch == 13)
2064                                 ch = 10;
2065                         if ((ch == 10) || (buflen > 250)) {
2066                                 buf[buflen] = '\0';
2067                                 cprintf("%s%s", buf, nl);
2068                                 *buf = '\0';
2069                                 buflen = 0;
2070                         } else {
2071                                 buf[buflen] = ch;
2072                                 buflen++;
2073                         }
2074                 }
2075                 buf[buflen] = '\0';
2076                 if (!IsEmptyStr(buf))
2077                         cprintf("%s%s", buf, nl);
2078         }
2079
2080         /* If the message on disk is format 0 (Citadel vari-format), we
2081          * output using the formatter at 80 columns.  This is the final output
2082          * form if the transfer format is RFC822, but if the transfer format
2083          * is Citadel proprietary, it'll still work, because the indentation
2084          * for new paragraphs is correct and the client will reformat the
2085          * message to the reader's screen width.
2086          */
2087         if (TheMessage->cm_format_type == FMT_CITADEL) {
2088                 if (mode == MT_MIME) {
2089                         cprintf("Content-type: text/x-citadel-variformat\n\n");
2090                 }
2091                 memfmout(mptr, 0, nl);
2092         }
2093
2094         /* If the message on disk is format 4 (MIME), we've gotta hand it
2095          * off to the MIME parser.  The client has already been told that
2096          * this message is format 1 (fixed format), so the callback function
2097          * we use will display those parts as-is.
2098          */
2099         if (TheMessage->cm_format_type == FMT_RFC822) {
2100                 memset(&ma, 0, sizeof(struct ma_info));
2101
2102                 if (mode == MT_MIME) {
2103                         ma.use_fo_hooks = 0;
2104                         strcpy(ma.chosen_part, "1");
2105                         ma.chosen_pref = 9999;
2106                         mime_parser(mptr, NULL,
2107                                 *choose_preferred, *fixed_output_pre,
2108                                 *fixed_output_post, (void *)&ma, 0);
2109                         mime_parser(mptr, NULL,
2110                                 *output_preferred, NULL, NULL, (void *)&ma, CC->msg4_dont_decode);
2111                 }
2112                 else {
2113                         ma.use_fo_hooks = 1;
2114                         mime_parser(mptr, NULL,
2115                                 *fixed_output, *fixed_output_pre,
2116                                 *fixed_output_post, (void *)&ma, 0);
2117                 }
2118
2119         }
2120
2121 DONE:   /* now we're done */
2122         if (do_proto) cprintf("000\n");
2123         return(om_ok);
2124 }
2125
2126
2127
2128 /*
2129  * display a message (mode 0 - Citadel proprietary)
2130  */
2131 void cmd_msg0(char *cmdbuf)
2132 {
2133         long msgid;
2134         int headers_only = HEADERS_ALL;
2135
2136         msgid = extract_long(cmdbuf, 0);
2137         headers_only = extract_int(cmdbuf, 1);
2138
2139         CtdlOutputMsg(msgid, MT_CITADEL, headers_only, 1, 0, NULL, 0);
2140         return;
2141 }
2142
2143
2144 /*
2145  * display a message (mode 2 - RFC822)
2146  */
2147 void cmd_msg2(char *cmdbuf)
2148 {
2149         long msgid;
2150         int headers_only = HEADERS_ALL;
2151
2152         msgid = extract_long(cmdbuf, 0);
2153         headers_only = extract_int(cmdbuf, 1);
2154
2155         CtdlOutputMsg(msgid, MT_RFC822, headers_only, 1, 1, NULL, 0);
2156 }
2157
2158
2159
2160 /*
2161  * display a message (mode 3 - IGnet raw format - internal programs only)
2162  */
2163 void cmd_msg3(char *cmdbuf)
2164 {
2165         long msgnum;
2166         struct CtdlMessage *msg = NULL;
2167         struct ser_ret smr;
2168
2169         if (CC->internal_pgm == 0) {
2170                 cprintf("%d This command is for internal programs only.\n",
2171                         ERROR + HIGHER_ACCESS_REQUIRED);
2172                 return;
2173         }
2174
2175         msgnum = extract_long(cmdbuf, 0);
2176         msg = CtdlFetchMessage(msgnum, 1);
2177         if (msg == NULL) {
2178                 cprintf("%d Message %ld not found.\n",
2179                         ERROR + MESSAGE_NOT_FOUND, msgnum);
2180                 return;
2181         }
2182
2183         serialize_message(&smr, msg);
2184         CtdlFreeMessage(msg);
2185
2186         if (smr.len == 0) {
2187                 cprintf("%d Unable to serialize message\n",
2188                         ERROR + INTERNAL_ERROR);
2189                 return;
2190         }
2191
2192         cprintf("%d %ld\n", BINARY_FOLLOWS, (long)smr.len);
2193         client_write((char *)smr.ser, (int)smr.len);
2194         free(smr.ser);
2195 }
2196
2197
2198
2199 /*
2200  * Display a message using MIME content types
2201  */
2202 void cmd_msg4(char *cmdbuf)
2203 {
2204         long msgid;
2205         char section[64];
2206
2207         msgid = extract_long(cmdbuf, 0);
2208         extract_token(section, cmdbuf, 1, '|', sizeof section);
2209         CtdlOutputMsg(msgid, MT_MIME, 0, 1, 0, (section[0] ? section : NULL) , 0);
2210 }
2211
2212
2213
2214 /*
2215  * Client tells us its preferred message format(s)
2216  */
2217 void cmd_msgp(char *cmdbuf)
2218 {
2219         if (!strcasecmp(cmdbuf, "dont_decode")) {
2220                 CC->msg4_dont_decode = 1;
2221                 cprintf("%d MSG4 will not pre-decode messages.\n", CIT_OK);
2222         }
2223         else {
2224                 safestrncpy(CC->preferred_formats, cmdbuf, sizeof(CC->preferred_formats));
2225                 cprintf("%d Preferred MIME formats have been set.\n", CIT_OK);
2226         }
2227 }
2228
2229
2230 /*
2231  * Open a component of a MIME message as a download file
2232  */
2233 void cmd_opna(char *cmdbuf)
2234 {
2235         long msgid;
2236         char desired_section[128];
2237
2238         msgid = extract_long(cmdbuf, 0);
2239         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2240         safestrncpy(CC->download_desired_section, desired_section,
2241                 sizeof CC->download_desired_section);
2242         CtdlOutputMsg(msgid, MT_DOWNLOAD, 0, 1, 1, NULL, 0);
2243 }
2244
2245
2246 /*
2247  * Open a component of a MIME message and transmit it all at once
2248  */
2249 void cmd_dlat(char *cmdbuf)
2250 {
2251         long msgid;
2252         char desired_section[128];
2253
2254         msgid = extract_long(cmdbuf, 0);
2255         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2256         safestrncpy(CC->download_desired_section, desired_section,
2257                 sizeof CC->download_desired_section);
2258         CtdlOutputMsg(msgid, MT_SPEW_SECTION, 0, 1, 1, NULL, 0);
2259 }
2260
2261
2262 /*
2263  * Save one or more message pointers into a specified room
2264  * (Returns 0 for success, nonzero for failure)
2265  * roomname may be NULL to use the current room
2266  *
2267  * Note that the 'supplied_msg' field may be set to NULL, in which case
2268  * the message will be fetched from disk, by number, if we need to perform
2269  * replication checks.  This adds an additional database read, so if the
2270  * caller already has the message in memory then it should be supplied.  (Obviously
2271  * this mode of operation only works if we're saving a single message.)
2272  */
2273 int CtdlSaveMsgPointersInRoom(char *roomname, long newmsgidlist[], int num_newmsgs,
2274                                 int do_repl_check, struct CtdlMessage *supplied_msg)
2275 {
2276         int i, j, unique;
2277         char hold_rm[ROOMNAMELEN];
2278         struct cdbdata *cdbfr;
2279         int num_msgs;
2280         long *msglist;
2281         long highest_msg = 0L;
2282
2283         long msgid = 0;
2284         struct CtdlMessage *msg = NULL;
2285
2286         long *msgs_to_be_merged = NULL;
2287         int num_msgs_to_be_merged = 0;
2288
2289         CtdlLogPrintf(CTDL_DEBUG,
2290                 "CtdlSaveMsgPointersInRoom(room=%s, num_msgs=%d, repl=%d)\n",
2291                 roomname, num_newmsgs, do_repl_check);
2292
2293         strcpy(hold_rm, CC->room.QRname);
2294
2295         /* Sanity checks */
2296         if (newmsgidlist == NULL) return(ERROR + INTERNAL_ERROR);
2297         if (num_newmsgs < 1) return(ERROR + INTERNAL_ERROR);
2298         if (num_newmsgs > 1) supplied_msg = NULL;
2299
2300         /* Now the regular stuff */
2301         if (lgetroom(&CC->room,
2302            ((roomname != NULL) ? roomname : CC->room.QRname) )
2303            != 0) {
2304                 CtdlLogPrintf(CTDL_ERR, "No such room <%s>\n", roomname);
2305                 return(ERROR + ROOM_NOT_FOUND);
2306         }
2307
2308
2309         msgs_to_be_merged = malloc(sizeof(long) * num_newmsgs);
2310         num_msgs_to_be_merged = 0;
2311
2312
2313         cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
2314         if (cdbfr == NULL) {
2315                 msglist = NULL;
2316                 num_msgs = 0;
2317         } else {
2318                 msglist = (long *) cdbfr->ptr;
2319                 cdbfr->ptr = NULL;      /* CtdlSaveMsgPointerInRoom() now owns this memory */
2320                 num_msgs = cdbfr->len / sizeof(long);
2321                 cdb_free(cdbfr);
2322         }
2323
2324
2325         /* Create a list of msgid's which were supplied by the caller, but do
2326          * not already exist in the target room.  It is absolutely taboo to
2327          * have more than one reference to the same message in a room.
2328          */
2329         for (i=0; i<num_newmsgs; ++i) {
2330                 unique = 1;
2331                 if (num_msgs > 0) for (j=0; j<num_msgs; ++j) {
2332                         if (msglist[j] == newmsgidlist[i]) {
2333                                 unique = 0;
2334                         }
2335                 }
2336                 if (unique) {
2337                         msgs_to_be_merged[num_msgs_to_be_merged++] = newmsgidlist[i];
2338                 }
2339         }
2340
2341         CtdlLogPrintf(9, "%d unique messages to be merged\n", num_msgs_to_be_merged);
2342
2343         /*
2344          * Now merge the new messages
2345          */
2346         msglist = realloc(msglist, (sizeof(long) * (num_msgs + num_msgs_to_be_merged)) );
2347         if (msglist == NULL) {
2348                 CtdlLogPrintf(CTDL_ALERT, "ERROR: can't realloc message list!\n");
2349         }
2350         memcpy(&msglist[num_msgs], msgs_to_be_merged, (sizeof(long) * num_msgs_to_be_merged) );
2351         num_msgs += num_msgs_to_be_merged;
2352
2353         /* Sort the message list, so all the msgid's are in order */
2354         num_msgs = sort_msglist(msglist, num_msgs);
2355
2356         /* Determine the highest message number */
2357         highest_msg = msglist[num_msgs - 1];
2358
2359         /* Write it back to disk. */
2360         cdb_store(CDB_MSGLISTS, &CC->room.QRnumber, (int)sizeof(long),
2361                   msglist, (int)(num_msgs * sizeof(long)));
2362
2363         /* Free up the memory we used. */
2364         free(msglist);
2365
2366         /* Update the highest-message pointer and unlock the room. */
2367         CC->room.QRhighest = highest_msg;
2368         lputroom(&CC->room);
2369
2370         /* Perform replication checks if necessary */
2371         if ( (DoesThisRoomNeedEuidIndexing(&CC->room)) && (do_repl_check) ) {
2372                 CtdlLogPrintf(CTDL_DEBUG, "CtdlSaveMsgPointerInRoom() doing repl checks\n");
2373
2374                 for (i=0; i<num_msgs_to_be_merged; ++i) {
2375                         msgid = msgs_to_be_merged[i];
2376
2377                         if (supplied_msg != NULL) {
2378                                 msg = supplied_msg;
2379                         }
2380                         else {
2381                                 msg = CtdlFetchMessage(msgid, 0);
2382                         }
2383
2384                         if (msg != NULL) {
2385                                 ReplicationChecks(msg);
2386
2387                                 /* If the message has an Exclusive ID, index that... */
2388                                 if (msg->cm_fields['E'] != NULL) {
2389                                         index_message_by_euid(msg->cm_fields['E'], &CC->room, msgid);
2390                                 }
2391
2392                                 /* Free up the memory we may have allocated */
2393                                 if (msg != supplied_msg) {
2394                                         CtdlFreeMessage(msg);
2395                                 }
2396                         }
2397
2398                 }
2399         }
2400
2401         else {
2402                 CtdlLogPrintf(CTDL_DEBUG, "CtdlSaveMsgPointerInRoom() skips repl checks\n");
2403         }
2404
2405         /* Submit this room for processing by hooks */
2406         PerformRoomHooks(&CC->room);
2407
2408         /* Go back to the room we were in before we wandered here... */
2409         getroom(&CC->room, hold_rm);
2410
2411         /* Bump the reference count for all messages which were merged */
2412         for (i=0; i<num_msgs_to_be_merged; ++i) {
2413                 AdjRefCount(msgs_to_be_merged[i], +1);
2414         }
2415
2416         /* Free up memory... */
2417         if (msgs_to_be_merged != NULL) {
2418                 free(msgs_to_be_merged);
2419         }
2420
2421         /* Return success. */
2422         return (0);
2423 }
2424
2425
2426 /*
2427  * This is the same as CtdlSaveMsgPointersInRoom() but it only accepts
2428  * a single message.
2429  */
2430 int CtdlSaveMsgPointerInRoom(char *roomname, long msgid,
2431                         int do_repl_check, struct CtdlMessage *supplied_msg)
2432 {
2433         return CtdlSaveMsgPointersInRoom(roomname, &msgid, 1, do_repl_check, supplied_msg);
2434 }
2435
2436
2437
2438
2439 /*
2440  * Message base operation to save a new message to the message store
2441  * (returns new message number)
2442  *
2443  * This is the back end for CtdlSubmitMsg() and should not be directly
2444  * called by server-side modules.
2445  *
2446  */
2447 long send_message(struct CtdlMessage *msg) {
2448         long newmsgid;
2449         long retval;
2450         char msgidbuf[256];
2451         struct ser_ret smr;
2452         int is_bigmsg = 0;
2453         char *holdM = NULL;
2454
2455         /* Get a new message number */
2456         newmsgid = get_new_message_number();
2457         snprintf(msgidbuf, sizeof msgidbuf, "%010ld@%s", newmsgid, config.c_fqdn);
2458
2459         /* Generate an ID if we don't have one already */
2460         if (msg->cm_fields['I']==NULL) {
2461                 msg->cm_fields['I'] = strdup(msgidbuf);
2462         }
2463
2464         /* If the message is big, set its body aside for storage elsewhere */
2465         if (msg->cm_fields['M'] != NULL) {
2466                 if (strlen(msg->cm_fields['M']) > BIGMSG) {
2467                         is_bigmsg = 1;
2468                         holdM = msg->cm_fields['M'];
2469                         msg->cm_fields['M'] = NULL;
2470                 }
2471         }
2472
2473         /* Serialize our data structure for storage in the database */
2474         serialize_message(&smr, msg);
2475
2476         if (is_bigmsg) {
2477                 msg->cm_fields['M'] = holdM;
2478         }
2479
2480         if (smr.len == 0) {
2481                 cprintf("%d Unable to serialize message\n",
2482                         ERROR + INTERNAL_ERROR);
2483                 return (-1L);
2484         }
2485
2486         /* Write our little bundle of joy into the message base */
2487         if (cdb_store(CDB_MSGMAIN, &newmsgid, (int)sizeof(long),
2488                       smr.ser, smr.len) < 0) {
2489                 CtdlLogPrintf(CTDL_ERR, "Can't store message\n");
2490                 retval = 0L;
2491         } else {
2492                 if (is_bigmsg) {
2493                         cdb_store(CDB_BIGMSGS,
2494                                 &newmsgid,
2495                                 (int)sizeof(long),
2496                                 holdM,
2497                                 (strlen(holdM) + 1)
2498                         );
2499                 }
2500                 retval = newmsgid;
2501         }
2502
2503         /* Free the memory we used for the serialized message */
2504         free(smr.ser);
2505
2506         /* Return the *local* message ID to the caller
2507          * (even if we're storing an incoming network message)
2508          */
2509         return(retval);
2510 }
2511
2512
2513
2514 /*
2515  * Serialize a struct CtdlMessage into the format used on disk and network.
2516  *
2517  * This function loads up a "struct ser_ret" (defined in server.h) which
2518  * contains the length of the serialized message and a pointer to the
2519  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
2520  */
2521 void serialize_message(struct ser_ret *ret,             /* return values */
2522                         struct CtdlMessage *msg)        /* unserialized msg */
2523 {
2524         size_t wlen, fieldlen;
2525         int i;
2526         static char *forder = FORDER;
2527
2528         /*
2529          * Check for valid message format
2530          */
2531         if (is_valid_message(msg) == 0) {
2532                 CtdlLogPrintf(CTDL_ERR, "serialize_message() aborting due to invalid message\n");
2533                 ret->len = 0;
2534                 ret->ser = NULL;
2535                 return;
2536         }
2537
2538         ret->len = 3;
2539         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL)
2540                 ret->len = ret->len +
2541                         strlen(msg->cm_fields[(int)forder[i]]) + 2;
2542
2543         ret->ser = malloc(ret->len);
2544         if (ret->ser == NULL) {
2545                 CtdlLogPrintf(CTDL_ERR, "serialize_message() malloc(%ld) failed: %s\n",
2546                         (long)ret->len, strerror(errno));
2547                 ret->len = 0;
2548                 ret->ser = NULL;
2549                 return;
2550         }
2551
2552         ret->ser[0] = 0xFF;
2553         ret->ser[1] = msg->cm_anon_type;
2554         ret->ser[2] = msg->cm_format_type;
2555         wlen = 3;
2556
2557         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
2558                 fieldlen = strlen(msg->cm_fields[(int)forder[i]]);
2559                 ret->ser[wlen++] = (char)forder[i];
2560                 safestrncpy((char *)&ret->ser[wlen], msg->cm_fields[(int)forder[i]], fieldlen+1);
2561                 wlen = wlen + fieldlen + 1;
2562         }
2563         if (ret->len != wlen) CtdlLogPrintf(CTDL_ERR, "ERROR: len=%ld wlen=%ld\n",
2564                 (long)ret->len, (long)wlen);
2565
2566         return;
2567 }
2568
2569
2570 /*
2571  * Serialize a struct CtdlMessage into the format used on disk and network.
2572  *
2573  * This function loads up a "struct ser_ret" (defined in server.h) which
2574  * contains the length of the serialized message and a pointer to the
2575  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
2576  */
2577 void dump_message(struct CtdlMessage *msg,      /* unserialized msg */
2578                   long Siz)                     /* how many chars ? */
2579 {
2580         size_t wlen;
2581         int i;
2582         static char *forder = FORDER;
2583         char *buf;
2584
2585         /*
2586          * Check for valid message format
2587          */
2588         if (is_valid_message(msg) == 0) {
2589                 CtdlLogPrintf(CTDL_ERR, "dump_message() aborting due to invalid message\n");
2590                 return;
2591         }
2592
2593         buf = (char*) malloc (Siz + 1);
2594
2595         wlen = 3;
2596
2597         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
2598                         snprintf (buf, Siz, " msg[%c] = %s ...\n", (char) forder[i],
2599                                    msg->cm_fields[(int)forder[i]]);
2600                         client_write (buf, strlen(buf));
2601                 }
2602
2603         return;
2604 }
2605
2606
2607
2608 /*
2609  * Check to see if any messages already exist in the current room which
2610  * carry the same Exclusive ID as this one.  If any are found, delete them.
2611  */
2612 void ReplicationChecks(struct CtdlMessage *msg) {
2613         long old_msgnum = (-1L);
2614
2615         if (DoesThisRoomNeedEuidIndexing(&CC->room) == 0) return;
2616
2617         CtdlLogPrintf(CTDL_DEBUG, "Performing replication checks in <%s>\n",
2618                 CC->room.QRname);
2619
2620         /* No exclusive id?  Don't do anything. */
2621         if (msg == NULL) return;
2622         if (msg->cm_fields['E'] == NULL) return;
2623         if (IsEmptyStr(msg->cm_fields['E'])) return;
2624         /*CtdlLogPrintf(CTDL_DEBUG, "Exclusive ID: <%s> for room <%s>\n",
2625                 msg->cm_fields['E'], CC->room.QRname);*/
2626
2627         old_msgnum = locate_message_by_euid(msg->cm_fields['E'], &CC->room);
2628         if (old_msgnum > 0L) {
2629                 CtdlLogPrintf(CTDL_DEBUG, "ReplicationChecks() replacing message %ld\n", old_msgnum);
2630                 CtdlDeleteMessages(CC->room.QRname, &old_msgnum, 1, "");
2631         }
2632 }
2633
2634
2635
2636 /*
2637  * Save a message to disk and submit it into the delivery system.
2638  */
2639 long CtdlSubmitMsg(struct CtdlMessage *msg,     /* message to save */
2640                    struct recptypes *recps,     /* recipients (if mail) */
2641                    char *force,                 /* force a particular room? */
2642                    int flags                    /* should the bessage be exported clean? */
2643 ) {
2644         char submit_filename[128];
2645         char generated_timestamp[32];
2646         char hold_rm[ROOMNAMELEN];
2647         char actual_rm[ROOMNAMELEN];
2648         char force_room[ROOMNAMELEN];
2649         char content_type[SIZ];                 /* We have to learn this */
2650         char recipient[SIZ];
2651         long newmsgid;
2652         char *mptr = NULL;
2653         struct ctdluser userbuf;
2654         int a, i;
2655         struct MetaData smi;
2656         FILE *network_fp = NULL;
2657         static int seqnum = 1;
2658         struct CtdlMessage *imsg = NULL;
2659         char *instr = NULL;
2660         size_t instr_alloc = 0;
2661         struct ser_ret smr;
2662         char *hold_R, *hold_D;
2663         char *collected_addresses = NULL;
2664         struct addresses_to_be_filed *aptr = NULL;
2665         char *saved_rfc822_version = NULL;
2666         int qualified_for_journaling = 0;
2667         struct CitContext *CCC = CC;            /* CachedCitContext - performance boost */
2668         char bounce_to[1024] = "";
2669         size_t tmp = 0;
2670         int rv = 0;
2671
2672         CtdlLogPrintf(CTDL_DEBUG, "CtdlSubmitMsg() called\n");
2673         if (is_valid_message(msg) == 0) return(-1);     /* self check */
2674
2675         /* If this message has no timestamp, we take the liberty of
2676          * giving it one, right now.
2677          */
2678         if (msg->cm_fields['T'] == NULL) {
2679                 snprintf(generated_timestamp, sizeof generated_timestamp, "%ld", (long)time(NULL));
2680                 msg->cm_fields['T'] = strdup(generated_timestamp);
2681         }
2682
2683         /* If this message has no path, we generate one.
2684          */
2685         if (msg->cm_fields['P'] == NULL) {
2686                 if (msg->cm_fields['A'] != NULL) {
2687                         msg->cm_fields['P'] = strdup(msg->cm_fields['A']);
2688                         for (a=0; !IsEmptyStr(&msg->cm_fields['P'][a]); ++a) {
2689                                 if (isspace(msg->cm_fields['P'][a])) {
2690                                         msg->cm_fields['P'][a] = ' ';
2691                                 }
2692                         }
2693                 }
2694                 else {
2695                         msg->cm_fields['P'] = strdup("unknown");
2696                 }
2697         }
2698
2699         if (force == NULL) {
2700                 strcpy(force_room, "");
2701         }
2702         else {
2703                 strcpy(force_room, force);
2704         }
2705
2706         /* Learn about what's inside, because it's what's inside that counts */
2707         if (msg->cm_fields['M'] == NULL) {
2708                 CtdlLogPrintf(CTDL_ERR, "ERROR: attempt to save message with NULL body\n");
2709                 return(-2);
2710         }
2711
2712         switch (msg->cm_format_type) {
2713         case 0:
2714                 strcpy(content_type, "text/x-citadel-variformat");
2715                 break;
2716         case 1:
2717                 strcpy(content_type, "text/plain");
2718                 break;
2719         case 4:
2720                 strcpy(content_type, "text/plain");
2721                 mptr = bmstrcasestr(msg->cm_fields['M'], "Content-type:");
2722                 if (mptr != NULL) {
2723                         char *aptr;
2724                         safestrncpy(content_type, &mptr[13], sizeof content_type);
2725                         striplt(content_type);
2726                         aptr = content_type;
2727                         while (!IsEmptyStr(aptr)) {
2728                                 if ((*aptr == ';')
2729                                     || (*aptr == ' ')
2730                                     || (*aptr == 13)
2731                                     || (*aptr == 10)) {
2732                                         *aptr = 0;
2733                                 }
2734                                 else aptr++;
2735                         }
2736                 }
2737         }
2738
2739         /* Goto the correct room */
2740         CtdlLogPrintf(CTDL_DEBUG, "Selected room %s\n", (recps) ? CCC->room.QRname : SENTITEMS);
2741         strcpy(hold_rm, CCC->room.QRname);
2742         strcpy(actual_rm, CCC->room.QRname);
2743         if (recps != NULL) {
2744                 strcpy(actual_rm, SENTITEMS);
2745         }
2746
2747         /* If the user is a twit, move to the twit room for posting */
2748         if (TWITDETECT) {
2749                 if (CCC->user.axlevel == 2) {
2750                         strcpy(hold_rm, actual_rm);
2751                         strcpy(actual_rm, config.c_twitroom);
2752                         CtdlLogPrintf(CTDL_DEBUG, "Diverting to twit room\n");
2753                 }
2754         }
2755
2756         /* ...or if this message is destined for Aide> then go there. */
2757         if (!IsEmptyStr(force_room)) {
2758                 strcpy(actual_rm, force_room);
2759         }
2760
2761         CtdlLogPrintf(CTDL_DEBUG, "Final selection: %s\n", actual_rm);
2762         if (strcasecmp(actual_rm, CCC->room.QRname)) {
2763                 /* getroom(&CCC->room, actual_rm); */
2764                 usergoto(actual_rm, 0, 1, NULL, NULL);
2765         }
2766
2767         /*
2768          * If this message has no O (room) field, generate one.
2769          */
2770         if (msg->cm_fields['O'] == NULL) {
2771                 msg->cm_fields['O'] = strdup(CCC->room.QRname);
2772         }
2773
2774         /* Perform "before save" hooks (aborting if any return nonzero) */
2775         CtdlLogPrintf(CTDL_DEBUG, "Performing before-save hooks\n");
2776         if (PerformMessageHooks(msg, EVT_BEFORESAVE) > 0) return(-3);
2777
2778         /*
2779          * If this message has an Exclusive ID, and the room is replication
2780          * checking enabled, then do replication checks.
2781          */
2782         if (DoesThisRoomNeedEuidIndexing(&CCC->room)) {
2783                 ReplicationChecks(msg);
2784         }
2785
2786         /* Save it to disk */
2787         CtdlLogPrintf(CTDL_DEBUG, "Saving to disk\n");
2788         newmsgid = send_message(msg);
2789         if (newmsgid <= 0L) return(-5);
2790
2791         /* Write a supplemental message info record.  This doesn't have to
2792          * be a critical section because nobody else knows about this message
2793          * yet.
2794          */
2795         CtdlLogPrintf(CTDL_DEBUG, "Creating MetaData record\n");
2796         memset(&smi, 0, sizeof(struct MetaData));
2797         smi.meta_msgnum = newmsgid;
2798         smi.meta_refcount = 0;
2799         safestrncpy(smi.meta_content_type, content_type,
2800                         sizeof smi.meta_content_type);
2801
2802         /*
2803          * Measure how big this message will be when rendered as RFC822.
2804          * We do this for two reasons:
2805          * 1. We need the RFC822 length for the new metadata record, so the
2806          *    POP and IMAP services don't have to calculate message lengths
2807          *    while the user is waiting (multiplied by potentially hundreds
2808          *    or thousands of messages).
2809          * 2. If journaling is enabled, we will need an RFC822 version of the
2810          *    message to attach to the journalized copy.
2811          */
2812         if (CCC->redirect_buffer != NULL) {
2813                 CtdlLogPrintf(CTDL_ALERT, "CCC->redirect_buffer is not NULL during message submission!\n");
2814                 abort();
2815         }
2816         CCC->redirect_buffer = malloc(SIZ);
2817         CCC->redirect_len = 0;
2818         CCC->redirect_alloc = SIZ;
2819         CtdlOutputPreLoadedMsg(msg, MT_RFC822, HEADERS_ALL, 0, 1, QP_EADDR);
2820         smi.meta_rfc822_length = CCC->redirect_len;
2821         saved_rfc822_version = CCC->redirect_buffer;
2822         CCC->redirect_buffer = NULL;
2823         CCC->redirect_len = 0;
2824         CCC->redirect_alloc = 0;
2825
2826         PutMetaData(&smi);
2827
2828         /* Now figure out where to store the pointers */
2829         CtdlLogPrintf(CTDL_DEBUG, "Storing pointers\n");
2830
2831         /* If this is being done by the networker delivering a private
2832          * message, we want to BYPASS saving the sender's copy (because there
2833          * is no local sender; it would otherwise go to the Trashcan).
2834          */
2835         if ((!CCC->internal_pgm) || (recps == NULL)) {
2836                 if (CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 1, msg) != 0) {
2837                         CtdlLogPrintf(CTDL_ERR, "ERROR saving message pointer!\n");
2838                         CtdlSaveMsgPointerInRoom(config.c_aideroom, newmsgid, 0, msg);
2839                 }
2840         }
2841
2842         /* For internet mail, drop a copy in the outbound queue room */
2843         if ((recps != NULL) && (recps->num_internet > 0)) {
2844                 CtdlSaveMsgPointerInRoom(SMTP_SPOOLOUT_ROOM, newmsgid, 0, msg);
2845         }
2846
2847         /* If other rooms are specified, drop them there too. */
2848         if ((recps != NULL) && (recps->num_room > 0))
2849           for (i=0; i<num_tokens(recps->recp_room, '|'); ++i) {
2850                 extract_token(recipient, recps->recp_room, i,
2851                                         '|', sizeof recipient);
2852                 CtdlLogPrintf(CTDL_DEBUG, "Delivering to room <%s>\n", recipient);
2853                 CtdlSaveMsgPointerInRoom(recipient, newmsgid, 0, msg);
2854         }
2855
2856         /* Bump this user's messages posted counter. */
2857         CtdlLogPrintf(CTDL_DEBUG, "Updating user\n");
2858         lgetuser(&CCC->user, CCC->curr_user);
2859         CCC->user.posted = CCC->user.posted + 1;
2860         lputuser(&CCC->user);
2861
2862         /* Decide where bounces need to be delivered */
2863         if ((recps != NULL) && (recps->bounce_to != NULL)) {
2864                 safestrncpy(bounce_to, recps->bounce_to, sizeof bounce_to);
2865         }
2866         else if (CCC->logged_in) {
2867                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", CCC->user.fullname, config.c_nodename);
2868         }
2869         else {
2870                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", msg->cm_fields['A'], msg->cm_fields['N']);
2871         }
2872
2873         /* If this is private, local mail, make a copy in the
2874          * recipient's mailbox and bump the reference count.
2875          */
2876         if ((recps != NULL) && (recps->num_local > 0))
2877           for (i=0; i<num_tokens(recps->recp_local, '|'); ++i) {
2878                 extract_token(recipient, recps->recp_local, i,
2879                                         '|', sizeof recipient);
2880                 CtdlLogPrintf(CTDL_DEBUG, "Delivering private local mail to <%s>\n",
2881                         recipient);
2882                 if (getuser(&userbuf, recipient) == 0) {
2883                         // Add a flag so the Funambol module knows its mail
2884                         msg->cm_fields['W'] = strdup(recipient);
2885                         MailboxName(actual_rm, sizeof actual_rm, &userbuf, MAILROOM);
2886                         CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 0, msg);
2887                         BumpNewMailCounter(userbuf.usernum);
2888                         if (!IsEmptyStr(config.c_funambol_host) || !IsEmptyStr(config.c_pager_program)) {
2889                         /* Generate a instruction message for the Funambol notification
2890                          * server, in the same style as the SMTP queue
2891                          */
2892                            instr_alloc = 1024;
2893                            instr = malloc(instr_alloc);
2894                            snprintf(instr, instr_alloc,
2895                         "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
2896                         "bounceto|%s\n",
2897                         SPOOLMIME, newmsgid, (long)time(NULL),
2898                         bounce_to
2899                         );
2900
2901                            imsg = malloc(sizeof(struct CtdlMessage));
2902                            memset(imsg, 0, sizeof(struct CtdlMessage));
2903                            imsg->cm_magic = CTDLMESSAGE_MAGIC;
2904                            imsg->cm_anon_type = MES_NORMAL;
2905                            imsg->cm_format_type = FMT_RFC822;
2906                            imsg->cm_fields['A'] = strdup("Citadel");
2907                            imsg->cm_fields['J'] = strdup("do not journal");
2908                            imsg->cm_fields['M'] = instr;        /* imsg owns this memory now */
2909                            imsg->cm_fields['W'] = strdup(recipient);
2910                            CtdlSubmitMsg(imsg, NULL, FNBL_QUEUE_ROOM, 0);
2911                            CtdlFreeMessage(imsg);
2912                         }
2913                 }
2914                 else {
2915                         CtdlLogPrintf(CTDL_DEBUG, "No user <%s>\n", recipient);
2916                         CtdlSaveMsgPointerInRoom(config.c_aideroom,
2917                                 newmsgid, 0, msg);
2918                 }
2919         }
2920
2921         /* Perform "after save" hooks */
2922         CtdlLogPrintf(CTDL_DEBUG, "Performing after-save hooks\n");
2923         PerformMessageHooks(msg, EVT_AFTERSAVE);
2924
2925         /* For IGnet mail, we have to save a new copy into the spooler for
2926          * each recipient, with the R and D fields set to the recipient and
2927          * destination-node.  This has two ugly side effects: all other
2928          * recipients end up being unlisted in this recipient's copy of the
2929          * message, and it has to deliver multiple messages to the same
2930          * node.  We'll revisit this again in a year or so when everyone has
2931          * a network spool receiver that can handle the new style messages.
2932          */
2933         if ((recps != NULL) && (recps->num_ignet > 0))
2934           for (i=0; i<num_tokens(recps->recp_ignet, '|'); ++i) {
2935                 extract_token(recipient, recps->recp_ignet, i,
2936                                 '|', sizeof recipient);
2937
2938                 hold_R = msg->cm_fields['R'];
2939                 hold_D = msg->cm_fields['D'];
2940                 msg->cm_fields['R'] = malloc(SIZ);
2941                 msg->cm_fields['D'] = malloc(128);
2942                 extract_token(msg->cm_fields['R'], recipient, 0, '@', SIZ);
2943                 extract_token(msg->cm_fields['D'], recipient, 1, '@', 128);
2944
2945                 serialize_message(&smr, msg);
2946                 if (smr.len > 0) {
2947                         snprintf(submit_filename, sizeof submit_filename,
2948                                          "%s/netmail.%04lx.%04x.%04x",
2949                                          ctdl_netin_dir,
2950                                          (long) getpid(), CCC->cs_pid, ++seqnum);
2951                         network_fp = fopen(submit_filename, "wb+");
2952                         if (network_fp != NULL) {
2953                                 rv = fwrite(smr.ser, smr.len, 1, network_fp);
2954                                 fclose(network_fp);
2955                         }
2956                         free(smr.ser);
2957                 }
2958
2959                 free(msg->cm_fields['R']);
2960                 free(msg->cm_fields['D']);
2961                 msg->cm_fields['R'] = hold_R;
2962                 msg->cm_fields['D'] = hold_D;
2963         }
2964
2965         /* Go back to the room we started from */
2966         CtdlLogPrintf(CTDL_DEBUG, "Returning to original room %s\n", hold_rm);
2967         if (strcasecmp(hold_rm, CCC->room.QRname))
2968                 usergoto(hold_rm, 0, 1, NULL, NULL);
2969
2970         /* For internet mail, generate delivery instructions.
2971          * Yes, this is recursive.  Deal with it.  Infinite recursion does
2972          * not happen because the delivery instructions message does not
2973          * contain a recipient.
2974          */
2975         if ((recps != NULL) && (recps->num_internet > 0)) {
2976                 CtdlLogPrintf(CTDL_DEBUG, "Generating delivery instructions\n");
2977                 instr_alloc = 1024;
2978                 instr = malloc(instr_alloc);
2979                 snprintf(instr, instr_alloc,
2980                         "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
2981                         "bounceto|%s\n",
2982                         SPOOLMIME, newmsgid, (long)time(NULL),
2983                         bounce_to
2984                 );
2985
2986                 if (recps->envelope_from != NULL) {
2987                         tmp = strlen(instr);
2988                         snprintf(&instr[tmp], instr_alloc-tmp, "envelope_from|%s\n", recps->envelope_from);
2989                 }
2990
2991                 for (i=0; i<num_tokens(recps->recp_internet, '|'); ++i) {
2992                         tmp = strlen(instr);
2993                         extract_token(recipient, recps->recp_internet, i, '|', sizeof recipient);
2994                         if ((tmp + strlen(recipient) + 32) > instr_alloc) {
2995                                 instr_alloc = instr_alloc * 2;
2996                                 instr = realloc(instr, instr_alloc);
2997                         }
2998                         snprintf(&instr[tmp], instr_alloc - tmp, "remote|%s|0||\n", recipient);
2999                 }
3000
3001                 imsg = malloc(sizeof(struct CtdlMessage));
3002                 memset(imsg, 0, sizeof(struct CtdlMessage));
3003                 imsg->cm_magic = CTDLMESSAGE_MAGIC;
3004                 imsg->cm_anon_type = MES_NORMAL;
3005                 imsg->cm_format_type = FMT_RFC822;
3006                 imsg->cm_fields['A'] = strdup("Citadel");
3007                 imsg->cm_fields['J'] = strdup("do not journal");
3008                 imsg->cm_fields['M'] = instr;   /* imsg owns this memory now */
3009                 CtdlSubmitMsg(imsg, NULL, SMTP_SPOOLOUT_ROOM, QP_EADDR);
3010                 CtdlFreeMessage(imsg);
3011         }
3012
3013         /*
3014          * Any addresses to harvest for someone's address book?
3015          */
3016         if ( (CCC->logged_in) && (recps != NULL) ) {
3017                 collected_addresses = harvest_collected_addresses(msg);
3018         }
3019
3020         if (collected_addresses != NULL) {
3021                 aptr = (struct addresses_to_be_filed *)
3022                         malloc(sizeof(struct addresses_to_be_filed));
3023                 MailboxName(actual_rm, sizeof actual_rm,
3024                         &CCC->user, USERCONTACTSROOM);
3025                 aptr->roomname = strdup(actual_rm);
3026                 aptr->collected_addresses = collected_addresses;
3027                 begin_critical_section(S_ATBF);
3028                 aptr->next = atbf;
3029                 atbf = aptr;
3030                 end_critical_section(S_ATBF);
3031         }
3032
3033         /*
3034          * Determine whether this message qualifies for journaling.
3035          */
3036         if (msg->cm_fields['J'] != NULL) {
3037                 qualified_for_journaling = 0;
3038         }
3039         else {
3040                 if (recps == NULL) {
3041                         qualified_for_journaling = config.c_journal_pubmsgs;
3042                 }
3043                 else if (recps->num_local + recps->num_ignet + recps->num_internet > 0) {
3044                         qualified_for_journaling = config.c_journal_email;
3045                 }
3046                 else {
3047                         qualified_for_journaling = config.c_journal_pubmsgs;
3048                 }
3049         }
3050
3051         /*
3052          * Do we have to perform journaling?  If so, hand off the saved
3053          * RFC822 version will be handed off to the journaler for background
3054          * submit.  Otherwise, we have to free the memory ourselves.
3055          */
3056         if (saved_rfc822_version != NULL) {
3057                 if (qualified_for_journaling) {
3058                         JournalBackgroundSubmit(msg, saved_rfc822_version, recps);
3059                 }
3060                 else {
3061                         free(saved_rfc822_version);
3062                 }
3063         }
3064
3065         /* Done. */
3066         return(newmsgid);
3067 }
3068
3069
3070
3071
3072
3073 /*
3074  * Convenience function for generating small administrative messages.
3075  */
3076 void quickie_message(const char *from, const char *fromaddr, char *to, char *room, const char *text,
3077                         int format_type, const char *subject)
3078 {
3079         struct CtdlMessage *msg;
3080         struct recptypes *recp = NULL;
3081
3082         msg = malloc(sizeof(struct CtdlMessage));
3083         memset(msg, 0, sizeof(struct CtdlMessage));
3084         msg->cm_magic = CTDLMESSAGE_MAGIC;
3085         msg->cm_anon_type = MES_NORMAL;
3086         msg->cm_format_type = format_type;
3087
3088         if (from != NULL) {
3089                 msg->cm_fields['A'] = strdup(from);
3090         }
3091         else if (fromaddr != NULL) {
3092                 msg->cm_fields['A'] = strdup(fromaddr);
3093                 if (strchr(msg->cm_fields['A'], '@')) {
3094                         *strchr(msg->cm_fields['A'], '@') = 0;
3095                 }
3096         }
3097         else {
3098                 msg->cm_fields['A'] = strdup("Citadel");
3099         }
3100
3101         if (fromaddr != NULL) msg->cm_fields['F'] = strdup(fromaddr);
3102         if (room != NULL) msg->cm_fields['O'] = strdup(room);
3103         msg->cm_fields['N'] = strdup(NODENAME);
3104         if (to != NULL) {
3105                 msg->cm_fields['R'] = strdup(to);
3106                 recp = validate_recipients(to, NULL, 0);
3107         }
3108         if (subject != NULL) {
3109                 msg->cm_fields['U'] = strdup(subject);
3110         }
3111         msg->cm_fields['M'] = strdup(text);
3112
3113         CtdlSubmitMsg(msg, recp, room, 0);
3114         CtdlFreeMessage(msg);
3115         if (recp != NULL) free_recipients(recp);
3116 }
3117
3118
3119
3120 /*
3121  * Back end function used by CtdlMakeMessage() and similar functions
3122  */
3123 char *CtdlReadMessageBody(char *terminator,     /* token signalling EOT */
3124                         size_t maxlen,          /* maximum message length */
3125                         char *exist,            /* if non-null, append to it;
3126                                                    exist is ALWAYS freed  */
3127                         int crlf,               /* CRLF newlines instead of LF */
3128                         int sock                /* socket handle or 0 for this session's client socket */
3129                         ) {
3130         char buf[1024];
3131         int linelen;
3132         size_t message_len = 0;
3133         size_t buffer_len = 0;
3134         char *ptr;
3135         char *m;
3136         int flushing = 0;
3137         int finished = 0;
3138         int dotdot = 0;
3139
3140         if (exist == NULL) {
3141                 m = malloc(4096);
3142                 m[0] = 0;
3143                 buffer_len = 4096;
3144                 message_len = 0;
3145         }
3146         else {
3147                 message_len = strlen(exist);
3148                 buffer_len = message_len + 4096;
3149                 m = realloc(exist, buffer_len);
3150                 if (m == NULL) {
3151                         free(exist);
3152                         return m;
3153                 }
3154         }
3155
3156         /* Do we need to change leading ".." to "." for SMTP escaping? */
3157         if (!strcmp(terminator, ".")) {
3158                 dotdot = 1;
3159         }
3160
3161         /* flush the input if we have nowhere to store it */
3162         if (m == NULL) {
3163                 flushing = 1;
3164         }
3165
3166         /* read in the lines of message text one by one */
3167         do {
3168                 if (sock > 0) {
3169                         if (sock_getln(sock, buf, (sizeof buf - 3)) < 0) finished = 1;
3170                 }
3171                 else {
3172                         if (client_getln(buf, (sizeof buf - 3)) < 1) finished = 1;
3173                 }
3174                 if (!strcmp(buf, terminator)) finished = 1;
3175                 if (crlf) {
3176                         strcat(buf, "\r\n");
3177                 }
3178                 else {
3179                         strcat(buf, "\n");
3180                 }
3181
3182                 /* Unescape SMTP-style input of two dots at the beginning of the line */
3183                 if (dotdot) {
3184                         if (!strncmp(buf, "..", 2)) {
3185                                 strcpy(buf, &buf[1]);
3186                         }
3187                 }
3188
3189                 if ( (!flushing) && (!finished) ) {
3190                         /* Measure the line */
3191                         linelen = strlen(buf);
3192
3193                         /* augment the buffer if we have to */
3194                         if ((message_len + linelen) >= buffer_len) {
3195                                 ptr = realloc(m, (buffer_len * 2) );
3196                                 if (ptr == NULL) {      /* flush if can't allocate */
3197                                         flushing = 1;
3198                                 } else {
3199                                         buffer_len = (buffer_len * 2);
3200                                         m = ptr;
3201                                         CtdlLogPrintf(CTDL_DEBUG, "buffer_len is now %ld\n", (long)buffer_len);
3202                                 }
3203                         }
3204
3205                         /* Add the new line to the buffer.  NOTE: this loop must avoid
3206                         * using functions like strcat() and strlen() because they
3207                         * traverse the entire buffer upon every call, and doing that
3208                         * for a multi-megabyte message slows it down beyond usability.
3209                         */
3210                         strcpy(&m[message_len], buf);
3211                         message_len += linelen;
3212                 }
3213
3214                 /* if we've hit the max msg length, flush the rest */
3215                 if (message_len >= maxlen) flushing = 1;
3216
3217         } while (!finished);
3218         return(m);
3219 }
3220
3221
3222
3223
3224 /*
3225  * Build a binary message to be saved on disk.
3226  * (NOTE: if you supply 'preformatted_text', the buffer you give it
3227  * will become part of the message.  This means you are no longer
3228  * responsible for managing that memory -- it will be freed along with
3229  * the rest of the fields when CtdlFreeMessage() is called.)
3230  */
3231
3232 struct CtdlMessage *CtdlMakeMessage(
3233         struct ctdluser *author,        /* author's user structure */
3234         char *recipient,                /* NULL if it's not mail */
3235         char *recp_cc,                  /* NULL if it's not mail */
3236         char *room,                     /* room where it's going */
3237         int type,                       /* see MES_ types in header file */
3238         int format_type,                /* variformat, plain text, MIME... */
3239         char *fake_name,                /* who we're masquerading as */
3240         char *my_email,                 /* which of my email addresses to use (empty is ok) */
3241         char *subject,                  /* Subject (optional) */
3242         char *supplied_euid,            /* ...or NULL if this is irrelevant */
3243         char *preformatted_text,        /* ...or NULL to read text from client */
3244         char *references                /* Thread references */
3245 ) {
3246         char dest_node[256];
3247         char buf[1024];
3248         struct CtdlMessage *msg;
3249
3250         msg = malloc(sizeof(struct CtdlMessage));
3251         memset(msg, 0, sizeof(struct CtdlMessage));
3252         msg->cm_magic = CTDLMESSAGE_MAGIC;
3253         msg->cm_anon_type = type;
3254         msg->cm_format_type = format_type;
3255
3256         /* Don't confuse the poor folks if it's not routed mail. */
3257         strcpy(dest_node, "");
3258
3259         if (recipient != NULL) striplt(recipient);
3260         if (recp_cc != NULL) striplt(recp_cc);
3261
3262         /* Path or Return-Path */
3263         if (my_email == NULL) my_email = "";
3264
3265         if (!IsEmptyStr(my_email)) {
3266                 msg->cm_fields['P'] = strdup(my_email);
3267         }
3268         else {
3269                 snprintf(buf, sizeof buf, "%s", author->fullname);
3270                 msg->cm_fields['P'] = strdup(buf);
3271         }
3272         convert_spaces_to_underscores(msg->cm_fields['P']);
3273
3274         snprintf(buf, sizeof buf, "%ld", (long)time(NULL));     /* timestamp */
3275         msg->cm_fields['T'] = strdup(buf);
3276
3277         if ((fake_name != NULL) && (fake_name[0])) {            /* author */
3278                 msg->cm_fields['A'] = strdup(fake_name);
3279         }
3280         else {
3281                 msg->cm_fields['A'] = strdup(author->fullname);
3282         }
3283
3284         if (CC->room.QRflags & QR_MAILBOX) {            /* room */
3285                 msg->cm_fields['O'] = strdup(&CC->room.QRname[11]);
3286         }
3287         else {
3288                 msg->cm_fields['O'] = strdup(CC->room.QRname);
3289         }
3290
3291         msg->cm_fields['N'] = strdup(NODENAME);         /* nodename */
3292         msg->cm_fields['H'] = strdup(HUMANNODE);                /* hnodename */
3293
3294         if ((recipient != NULL) && (recipient[0] != 0)) {
3295                 msg->cm_fields['R'] = strdup(recipient);
3296         }
3297         if ((recp_cc != NULL) && (recp_cc[0] != 0)) {
3298                 msg->cm_fields['Y'] = strdup(recp_cc);
3299         }
3300         if (dest_node[0] != 0) {
3301                 msg->cm_fields['D'] = strdup(dest_node);
3302         }
3303
3304         if (!IsEmptyStr(my_email)) {
3305                 msg->cm_fields['F'] = strdup(my_email);
3306         }
3307         else if ( (author == &CC->user) && (!IsEmptyStr(CC->cs_inet_email)) ) {
3308                 msg->cm_fields['F'] = strdup(CC->cs_inet_email);
3309         }
3310
3311         if (subject != NULL) {
3312                 long length;
3313                 striplt(subject);
3314                 length = strlen(subject);
3315                 if (length > 0) {
3316                         long i;
3317                         long IsAscii;
3318                         IsAscii = -1;
3319                         i = 0;
3320                         while ((subject[i] != '\0') &&
3321                                (IsAscii = isascii(subject[i]) != 0 ))
3322                                 i++;
3323                         if (IsAscii != 0)
3324                                 msg->cm_fields['U'] = strdup(subject);
3325                         else /* ok, we've got utf8 in the string. */
3326                         {
3327                                 msg->cm_fields['U'] = rfc2047encode(subject, length);
3328                         }
3329
3330                 }
3331         }
3332
3333         if (supplied_euid != NULL) {
3334                 msg->cm_fields['E'] = strdup(supplied_euid);
3335         }
3336
3337         if (references != NULL) {
3338                 if (!IsEmptyStr(references)) {
3339                         msg->cm_fields['W'] = strdup(references);
3340                 }
3341         }
3342
3343         if (preformatted_text != NULL) {
3344                 msg->cm_fields['M'] = preformatted_text;
3345         }
3346         else {
3347                 msg->cm_fields['M'] = CtdlReadMessageBody("000", config.c_maxmsglen, NULL, 0, 0);
3348         }
3349
3350         return(msg);
3351 }
3352
3353
3354 /*
3355  * Check to see whether we have permission to post a message in the current
3356  * room.  Returns a *CITADEL ERROR CODE* and puts a message in errmsgbuf, or
3357  * returns 0 on success.
3358  */
3359 int CtdlDoIHavePermissionToPostInThisRoom(char *errmsgbuf,
3360                                           size_t n,
3361                                           const char* RemoteIdentifier,
3362                                           int PostPublic) {
3363         int ra;
3364
3365         if (!(CC->logged_in) &&
3366             (PostPublic == POST_LOGGED_IN)) {
3367                 snprintf(errmsgbuf, n, "Not logged in.");
3368                 return (ERROR + NOT_LOGGED_IN);
3369         }
3370         else if (PostPublic == CHECK_EXISTANCE) {
3371                 return (0); // We're Evaling whether a recipient exists
3372         }
3373         else if (!(CC->logged_in)) {
3374
3375                 if ((CC->room.QRflags & QR_READONLY)) {
3376                         snprintf(errmsgbuf, n, "Not logged in.");
3377                         return (ERROR + NOT_LOGGED_IN);
3378                 }
3379                 if (CC->room.QRflags2 & QR2_MODERATED) {
3380                         snprintf(errmsgbuf, n, "Not logged in Moderation feature not yet implemented!");
3381                         return (ERROR + NOT_LOGGED_IN);
3382                 }
3383                 if ((PostPublic!=POST_LMTP) &&(CC->room.QRflags2 & QR2_SMTP_PUBLIC) == 0) {
3384                         SpoolControl *sc;
3385                         char filename[SIZ];
3386                         int found;
3387
3388                         if (RemoteIdentifier == NULL)
3389                         {
3390                                 snprintf(errmsgbuf, n, "Need sender to permit access.");
3391                                 return (ERROR + USERNAME_REQUIRED);
3392                         }
3393
3394                         assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
3395                         begin_critical_section(S_NETCONFIGS);
3396                         if (!read_spoolcontrol_file(&sc, filename))
3397                         {
3398                                 end_critical_section(S_NETCONFIGS);
3399                                 snprintf(errmsgbuf, n,
3400                                         "This mailing list only accepts posts from subscribers.");
3401                                 return (ERROR + NO_SUCH_USER);
3402                         }
3403                         end_critical_section(S_NETCONFIGS);
3404                         found = is_recipient (sc, RemoteIdentifier);
3405                         free_spoolcontrol_struct(&sc);
3406                         if (found) {
3407                                 return (0);
3408                         }
3409                         else {
3410                                 snprintf(errmsgbuf, n,
3411                                         "This mailing list only accepts posts from subscribers.");
3412                                 return (ERROR + NO_SUCH_USER);
3413                         }
3414                 }
3415                 return (0);
3416
3417         }
3418
3419         if ((CC->user.axlevel < 2)
3420             && ((CC->room.QRflags & QR_MAILBOX) == 0)) {
3421                 snprintf(errmsgbuf, n, "Need to be validated to enter "
3422                                 "(except in %s> to sysop)", MAILROOM);
3423                 return (ERROR + HIGHER_ACCESS_REQUIRED);
3424         }
3425
3426         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
3427         if (!(ra & UA_POSTALLOWED)) {
3428                 snprintf(errmsgbuf, n, "Higher access is required to post in this room.");
3429                 return (ERROR + HIGHER_ACCESS_REQUIRED);
3430         }
3431
3432         strcpy(errmsgbuf, "Ok");
3433         return(0);
3434 }
3435
3436
3437 /*
3438  * Check to see if the specified user has Internet mail permission
3439  * (returns nonzero if permission is granted)
3440  */
3441 int CtdlCheckInternetMailPermission(struct ctdluser *who) {
3442
3443         /* Do not allow twits to send Internet mail */
3444         if (who->axlevel <= 2) return(0);
3445
3446         /* Globally enabled? */
3447         if (config.c_restrict == 0) return(1);
3448
3449         /* User flagged ok? */
3450         if (who->flags & US_INTERNET) return(2);
3451
3452         /* Aide level access? */
3453         if (who->axlevel >= 6) return(3);
3454
3455         /* No mail for you! */
3456         return(0);
3457 }
3458
3459
3460 /*
3461  * Validate recipients, count delivery types and errors, and handle aliasing
3462  * FIXME check for dupes!!!!!
3463  *
3464  * Returns 0 if all addresses are ok, ret->num_error = -1 if no addresses
3465  * were specified, or the number of addresses found invalid.
3466  *
3467  * Caller needs to free the result using free_recipients()
3468  */
3469 struct recptypes *validate_recipients(char *supplied_recipients,
3470                                       const char *RemoteIdentifier,
3471                                       int Flags) {
3472         struct recptypes *ret;
3473         char *recipients = NULL;
3474         char this_recp[256];
3475         char this_recp_cooked[256];
3476         char append[SIZ];
3477         int num_recps = 0;
3478         int i, j;
3479         int mailtype;
3480         int invalid;
3481         struct ctdluser tempUS;
3482         struct ctdlroom tempQR;
3483         struct ctdlroom tempQR2;
3484         int err = 0;
3485         char errmsg[SIZ];
3486         int in_quotes = 0;
3487
3488         /* Initialize */
3489         ret = (struct recptypes *) malloc(sizeof(struct recptypes));
3490         if (ret == NULL) return(NULL);
3491
3492         /* Set all strings to null and numeric values to zero */
3493         memset(ret, 0, sizeof(struct recptypes));
3494
3495         if (supplied_recipients == NULL) {
3496                 recipients = strdup("");
3497         }
3498         else {
3499                 recipients = strdup(supplied_recipients);
3500         }
3501
3502         /* Allocate some memory.  Yes, this allocates 500% more memory than we will
3503          * actually need, but it's healthier for the heap than doing lots of tiny
3504          * realloc() calls instead.
3505          */
3506
3507         ret->errormsg = malloc(strlen(recipients) + 1024);
3508         ret->recp_local = malloc(strlen(recipients) + 1024);
3509         ret->recp_internet = malloc(strlen(recipients) + 1024);
3510         ret->recp_ignet = malloc(strlen(recipients) + 1024);
3511         ret->recp_room = malloc(strlen(recipients) + 1024);
3512         ret->display_recp = malloc(strlen(recipients) + 1024);
3513
3514         ret->errormsg[0] = 0;
3515         ret->recp_local[0] = 0;
3516         ret->recp_internet[0] = 0;
3517         ret->recp_ignet[0] = 0;
3518         ret->recp_room[0] = 0;
3519         ret->display_recp[0] = 0;
3520
3521         ret->recptypes_magic = RECPTYPES_MAGIC;
3522
3523         /* Change all valid separator characters to commas */
3524         for (i=0; !IsEmptyStr(&recipients[i]); ++i) {
3525                 if ((recipients[i] == ';') || (recipients[i] == '|')) {
3526                         recipients[i] = ',';
3527                 }
3528         }
3529
3530         /* Now start extracting recipients... */
3531
3532         while (!IsEmptyStr(recipients)) {
3533
3534                 for (i=0; i<=strlen(recipients); ++i) {
3535                         if (recipients[i] == '\"') in_quotes = 1 - in_quotes;
3536                         if ( ( (recipients[i] == ',') && (!in_quotes) ) || (recipients[i] == 0) ) {
3537                                 safestrncpy(this_recp, recipients, i+1);
3538                                 this_recp[i] = 0;
3539                                 if (recipients[i] == ',') {
3540                                         strcpy(recipients, &recipients[i+1]);
3541                                 }
3542                                 else {
3543                                         strcpy(recipients, "");
3544                                 }
3545                                 break;
3546                         }
3547                 }
3548
3549                 striplt(this_recp);
3550                 if (IsEmptyStr(this_recp))
3551                         break;
3552                 CtdlLogPrintf(CTDL_DEBUG, "Evaluating recipient #%d: %s\n", num_recps, this_recp);
3553                 ++num_recps;
3554                 mailtype = alias(this_recp);
3555                 mailtype = alias(this_recp);
3556                 mailtype = alias(this_recp);
3557                 j = 0;
3558                 for (j=0; !IsEmptyStr(&this_recp[j]); ++j) {
3559                         if (this_recp[j]=='_') {
3560                                 this_recp_cooked[j] = ' ';
3561                         }
3562                         else {
3563                                 this_recp_cooked[j] = this_recp[j];
3564                         }
3565                 }
3566                 this_recp_cooked[j] = '\0';
3567                 invalid = 0;
3568                 errmsg[0] = 0;
3569                 switch(mailtype) {
3570                         case MES_LOCAL:
3571                                 if (!strcasecmp(this_recp, "sysop")) {
3572                                         ++ret->num_room;
3573                                         strcpy(this_recp, config.c_aideroom);
3574                                         if (!IsEmptyStr(ret->recp_room)) {
3575                                                 strcat(ret->recp_room, "|");
3576                                         }
3577                                         strcat(ret->recp_room, this_recp);
3578                                 }
3579                                 else if ( (!strncasecmp(this_recp, "room_", 5))
3580                                       && (!getroom(&tempQR, &this_recp_cooked[5])) ) {
3581
3582                                         /* Save room so we can restore it later */
3583                                         tempQR2 = CC->room;
3584                                         CC->room = tempQR;
3585
3586                                         /* Check permissions to send mail to this room */
3587                                         err = CtdlDoIHavePermissionToPostInThisRoom(errmsg,
3588                                                                                     sizeof errmsg,
3589                                                                                     RemoteIdentifier,
3590                                                                                     Flags
3591                                         );
3592                                         if (err)
3593                                         {
3594                                                 ++ret->num_error;
3595                                                 invalid = 1;
3596                                         }
3597                                         else {
3598                                                 ++ret->num_room;
3599                                                 if (!IsEmptyStr(ret->recp_room)) {
3600                                                         strcat(ret->recp_room, "|");
3601                                                 }
3602                                                 strcat(ret->recp_room, &this_recp_cooked[5]);
3603                                         }
3604
3605                                         /* Restore room in case something needs it */
3606                                         CC->room = tempQR2;
3607
3608                                 }
3609                                 else if (getuser(&tempUS, this_recp) == 0) {
3610                                         ++ret->num_local;
3611                                         strcpy(this_recp, tempUS.fullname);
3612                                         if (!IsEmptyStr(ret->recp_local)) {
3613                                                 strcat(ret->recp_local, "|");
3614                                         }
3615                                         strcat(ret->recp_local, this_recp);
3616                                 }
3617                                 else if (getuser(&tempUS, this_recp_cooked) == 0) {
3618                                         ++ret->num_local;
3619                                         strcpy(this_recp, tempUS.fullname);
3620                                         if (!IsEmptyStr(ret->recp_local)) {
3621                                                 strcat(ret->recp_local, "|");
3622                                         }
3623                                         strcat(ret->recp_local, this_recp);
3624                                 }
3625                                 else {
3626                                         ++ret->num_error;
3627                                         invalid = 1;
3628                                 }
3629                                 break;
3630                         case MES_INTERNET:
3631                                 /* Yes, you're reading this correctly: if the target
3632                                  * domain points back to the local system or an attached
3633                                  * Citadel directory, the address is invalid.  That's
3634                                  * because if the address were valid, we would have
3635                                  * already translated it to a local address by now.
3636                                  */
3637                                 if (IsDirectory(this_recp, 0)) {
3638                                         ++ret->num_error;
3639                                         invalid = 1;
3640                                 }
3641                                 else {
3642                                         ++ret->num_internet;
3643                                         if (!IsEmptyStr(ret->recp_internet)) {
3644                                                 strcat(ret->recp_internet, "|");
3645                                         }
3646                                         strcat(ret->recp_internet, this_recp);
3647                                 }
3648                                 break;
3649                         case MES_IGNET:
3650                                 ++ret->num_ignet;
3651                                 if (!IsEmptyStr(ret->recp_ignet)) {
3652                                         strcat(ret->recp_ignet, "|");
3653                                 }
3654                                 strcat(ret->recp_ignet, this_recp);
3655                                 break;
3656                         case MES_ERROR:
3657                                 ++ret->num_error;
3658                                 invalid = 1;
3659                                 break;
3660                 }
3661                 if (invalid) {
3662                         if (IsEmptyStr(errmsg)) {
3663                                 snprintf(append, sizeof append, "Invalid recipient: %s", this_recp);
3664                         }
3665                         else {
3666                                 snprintf(append, sizeof append, "%s", errmsg);
3667                         }
3668                         if ( (strlen(ret->errormsg) + strlen(append) + 3) < SIZ) {
3669                                 if (!IsEmptyStr(ret->errormsg)) {
3670                                         strcat(ret->errormsg, "; ");
3671                                 }
3672                                 strcat(ret->errormsg, append);
3673                         }
3674                 }
3675                 else {
3676                         if (IsEmptyStr(ret->display_recp)) {
3677                                 strcpy(append, this_recp);
3678                         }
3679                         else {
3680                                 snprintf(append, sizeof append, ", %s", this_recp);
3681                         }
3682                         if ( (strlen(ret->display_recp)+strlen(append)) < SIZ) {
3683                                 strcat(ret->display_recp, append);
3684                         }
3685                 }
3686         }
3687
3688         if ((ret->num_local + ret->num_internet + ret->num_ignet +
3689            ret->num_room + ret->num_error) == 0) {
3690                 ret->num_error = (-1);
3691                 strcpy(ret->errormsg, "No recipients specified.");
3692         }
3693
3694         CtdlLogPrintf(CTDL_DEBUG, "validate_recipients()\n");
3695         CtdlLogPrintf(CTDL_DEBUG, " local: %d <%s>\n", ret->num_local, ret->recp_local);
3696         CtdlLogPrintf(CTDL_DEBUG, "  room: %d <%s>\n", ret->num_room, ret->recp_room);
3697         CtdlLogPrintf(CTDL_DEBUG, "  inet: %d <%s>\n", ret->num_internet, ret->recp_internet);
3698         CtdlLogPrintf(CTDL_DEBUG, " ignet: %d <%s>\n", ret->num_ignet, ret->recp_ignet);
3699         CtdlLogPrintf(CTDL_DEBUG, " error: %d <%s>\n", ret->num_error, ret->errormsg);
3700
3701         free(recipients);
3702         return(ret);
3703 }
3704
3705
3706 /*
3707  * Destructor for struct recptypes
3708  */
3709 void free_recipients(struct recptypes *valid) {
3710
3711         if (valid == NULL) {
3712                 return;
3713         }
3714
3715         if (valid->recptypes_magic != RECPTYPES_MAGIC) {
3716                 CtdlLogPrintf(CTDL_EMERG, "Attempt to call free_recipients() on some other data type!\n");
3717                 abort();
3718         }
3719
3720         if (valid->errormsg != NULL)            free(valid->errormsg);
3721         if (valid->recp_local != NULL)          free(valid->recp_local);
3722         if (valid->recp_internet != NULL)       free(valid->recp_internet);
3723         if (valid->recp_ignet != NULL)          free(valid->recp_ignet);
3724         if (valid->recp_room != NULL)           free(valid->recp_room);
3725         if (valid->display_recp != NULL)        free(valid->display_recp);
3726         if (valid->bounce_to != NULL)           free(valid->bounce_to);
3727         if (valid->envelope_from != NULL)       free(valid->envelope_from);
3728         free(valid);
3729 }
3730
3731
3732
3733 /*
3734  * message entry  -  mode 0 (normal)
3735  */
3736 void cmd_ent0(char *entargs)
3737 {
3738         int post = 0;
3739         char recp[SIZ];
3740         char cc[SIZ];
3741         char bcc[SIZ];
3742         char supplied_euid[128];
3743         int anon_flag = 0;
3744         int format_type = 0;
3745         char newusername[256];
3746         char newuseremail[256];
3747         struct CtdlMessage *msg;
3748         int anonymous = 0;
3749         char errmsg[SIZ];
3750         int err = 0;
3751         struct recptypes *valid = NULL;
3752         struct recptypes *valid_to = NULL;
3753         struct recptypes *valid_cc = NULL;
3754         struct recptypes *valid_bcc = NULL;
3755         char subject[SIZ];
3756         int subject_required = 0;
3757         int do_confirm = 0;
3758         long msgnum;
3759         int i, j;
3760         char buf[256];
3761         int newuseremail_ok = 0;
3762         char references[SIZ];
3763         char *ptr;
3764
3765         unbuffer_output();
3766
3767         post = extract_int(entargs, 0);
3768         extract_token(recp, entargs, 1, '|', sizeof recp);
3769         anon_flag = extract_int(entargs, 2);
3770         format_type = extract_int(entargs, 3);
3771         extract_token(subject, entargs, 4, '|', sizeof subject);
3772         extract_token(newusername, entargs, 5, '|', sizeof newusername);
3773         do_confirm = extract_int(entargs, 6);
3774         extract_token(cc, entargs, 7, '|', sizeof cc);
3775         extract_token(bcc, entargs, 8, '|', sizeof bcc);
3776         switch(CC->room.QRdefaultview) {
3777                 case VIEW_NOTES:
3778                 case VIEW_WIKI:
3779                         extract_token(supplied_euid, entargs, 9, '|', sizeof supplied_euid);
3780                         break;
3781                 default:
3782                         supplied_euid[0] = 0;
3783                         break;
3784         }
3785         extract_token(newuseremail, entargs, 10, '|', sizeof newuseremail);
3786         extract_token(references, entargs, 11, '|', sizeof references);
3787         for (ptr=references; *ptr != 0; ++ptr) {
3788                 if (*ptr == '!') *ptr = '|';
3789         }
3790
3791         /* first check to make sure the request is valid. */
3792
3793         err = CtdlDoIHavePermissionToPostInThisRoom(errmsg, sizeof errmsg, NULL, POST_LOGGED_IN);
3794         if (err)
3795         {
3796                 cprintf("%d %s\n", err, errmsg);
3797                 return;
3798         }
3799
3800         /* Check some other permission type things. */
3801
3802         if (IsEmptyStr(newusername)) {
3803                 strcpy(newusername, CC->user.fullname);
3804         }
3805         if (  (CC->user.axlevel < 6)
3806            && (strcasecmp(newusername, CC->user.fullname))
3807            && (strcasecmp(newusername, CC->cs_inet_fn))
3808         ) {
3809                 cprintf("%d You don't have permission to author messages as '%s'.\n",
3810                         ERROR + HIGHER_ACCESS_REQUIRED,
3811                         newusername
3812                 );
3813                 return;
3814         }
3815
3816
3817         if (IsEmptyStr(newuseremail)) {
3818                 newuseremail_ok = 1;
3819         }
3820
3821         if (!IsEmptyStr(newuseremail)) {
3822                 if (!strcasecmp(newuseremail, CC->cs_inet_email)) {
3823                         newuseremail_ok = 1;
3824                 }
3825                 else if (!IsEmptyStr(CC->cs_inet_other_emails)) {
3826                         j = num_tokens(CC->cs_inet_other_emails, '|');
3827                         for (i=0; i<j; ++i) {
3828                                 extract_token(buf, CC->cs_inet_other_emails, i, '|', sizeof buf);
3829                                 if (!strcasecmp(newuseremail, buf)) {
3830                                         newuseremail_ok = 1;
3831                                 }
3832                         }
3833                 }
3834         }
3835
3836         if (!newuseremail_ok) {
3837                 cprintf("%d You don't have permission to author messages as '%s'.\n",
3838                         ERROR + HIGHER_ACCESS_REQUIRED,
3839                         newuseremail
3840                 );
3841                 return;
3842         }
3843
3844         CC->cs_flags |= CS_POSTING;
3845
3846         /* In mailbox rooms we have to behave a little differently --
3847          * make sure the user has specified at least one recipient.  Then
3848          * validate the recipient(s).  We do this for the Mail> room, as
3849          * well as any room which has the "Mailbox" view set.
3850          */
3851
3852         if (  ( (CC->room.QRflags & QR_MAILBOX) && (!strcasecmp(&CC->room.QRname[11], MAILROOM)) )
3853            || ( (CC->room.QRflags & QR_MAILBOX) && (CC->curr_view == VIEW_MAILBOX) )
3854         ) {
3855                 if (CC->user.axlevel < 2) {
3856                         strcpy(recp, "sysop");
3857                         strcpy(cc, "");
3858                         strcpy(bcc, "");
3859                 }
3860
3861                 valid_to = validate_recipients(recp, NULL, 0);
3862                 if (valid_to->num_error > 0) {
3863                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_to->errormsg);
3864                         free_recipients(valid_to);
3865                         return;
3866                 }
3867
3868                 valid_cc = validate_recipients(cc, NULL, 0);
3869                 if (valid_cc->num_error > 0) {
3870                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_cc->errormsg);
3871                         free_recipients(valid_to);
3872                         free_recipients(valid_cc);
3873                         return;
3874                 }
3875
3876                 valid_bcc = validate_recipients(bcc, NULL, 0);
3877                 if (valid_bcc->num_error > 0) {
3878                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_bcc->errormsg);
3879                         free_recipients(valid_to);
3880                         free_recipients(valid_cc);
3881                         free_recipients(valid_bcc);
3882                         return;
3883                 }
3884
3885                 /* Recipient required, but none were specified */
3886                 if ( (valid_to->num_error < 0) && (valid_cc->num_error < 0) && (valid_bcc->num_error < 0) ) {
3887                         free_recipients(valid_to);
3888                         free_recipients(valid_cc);
3889                         free_recipients(valid_bcc);
3890                         cprintf("%d At least one recipient is required.\n", ERROR + NO_SUCH_USER);
3891                         return;
3892                 }
3893
3894                 if (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0) {
3895                         if (CtdlCheckInternetMailPermission(&CC->user)==0) {
3896                                 cprintf("%d You do not have permission "
3897                                         "to send Internet mail.\n",
3898                                         ERROR + HIGHER_ACCESS_REQUIRED);
3899                                 free_recipients(valid_to);
3900                                 free_recipients(valid_cc);
3901                                 free_recipients(valid_bcc);
3902                                 return;
3903                         }
3904                 }
3905
3906                 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)
3907                    && (CC->user.axlevel < 4) ) {
3908                         cprintf("%d Higher access required for network mail.\n",
3909                                 ERROR + HIGHER_ACCESS_REQUIRED);
3910                         free_recipients(valid_to);
3911                         free_recipients(valid_cc);
3912                         free_recipients(valid_bcc);
3913                         return;
3914                 }
3915
3916                 if ((RESTRICT_INTERNET == 1)
3917                     && (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0)
3918                     && ((CC->user.flags & US_INTERNET) == 0)
3919                     && (!CC->internal_pgm)) {
3920                         cprintf("%d You don't have access to Internet mail.\n",
3921                                 ERROR + HIGHER_ACCESS_REQUIRED);
3922                         free_recipients(valid_to);
3923                         free_recipients(valid_cc);
3924                         free_recipients(valid_bcc);
3925                         return;
3926                 }
3927
3928         }
3929
3930         /* Is this a room which has anonymous-only or anonymous-option? */
3931         anonymous = MES_NORMAL;
3932         if (CC->room.QRflags & QR_ANONONLY) {
3933                 anonymous = MES_ANONONLY;
3934         }
3935         if (CC->room.QRflags & QR_ANONOPT) {
3936                 if (anon_flag == 1) {   /* only if the user requested it */
3937                         anonymous = MES_ANONOPT;
3938                 }
3939         }
3940
3941         if ((CC->room.QRflags & QR_MAILBOX) == 0) {
3942                 recp[0] = 0;
3943         }
3944
3945         /* Recommend to the client that the use of a message subject is
3946          * strongly recommended in this room, if either the SUBJECTREQ flag
3947          * is set, or if there is one or more Internet email recipients.
3948          */
3949         if (CC->room.QRflags2 & QR2_SUBJECTREQ) subject_required = 1;
3950         if ((valid_to)  && (valid_to->num_internet > 0))        subject_required = 1;
3951         if ((valid_cc)  && (valid_cc->num_internet > 0))        subject_required = 1;
3952         if ((valid_bcc) && (valid_bcc->num_internet > 0))       subject_required = 1;
3953
3954         /* If we're only checking the validity of the request, return
3955          * success without creating the message.
3956          */
3957         if (post == 0) {
3958                 cprintf("%d %s|%d\n", CIT_OK,
3959                         ((valid_to != NULL) ? valid_to->display_recp : ""),
3960                         subject_required);
3961                 free_recipients(valid_to);
3962                 free_recipients(valid_cc);
3963                 free_recipients(valid_bcc);
3964                 return;
3965         }
3966
3967         /* We don't need these anymore because we'll do it differently below */
3968         free_recipients(valid_to);
3969         free_recipients(valid_cc);
3970         free_recipients(valid_bcc);
3971
3972         /* Read in the message from the client. */
3973         if (do_confirm) {
3974                 cprintf("%d send message\n", START_CHAT_MODE);
3975         } else {
3976                 cprintf("%d send message\n", SEND_LISTING);
3977         }
3978
3979         msg = CtdlMakeMessage(&CC->user, recp, cc,
3980                 CC->room.QRname, anonymous, format_type,
3981                 newusername, newuseremail, subject,
3982                 ((!IsEmptyStr(supplied_euid)) ? supplied_euid : NULL),
3983                 NULL, references);
3984
3985         /* Put together one big recipients struct containing to/cc/bcc all in
3986          * one.  This is for the envelope.
3987          */
3988         char *all_recps = malloc(SIZ * 3);
3989         strcpy(all_recps, recp);
3990         if (!IsEmptyStr(cc)) {
3991                 if (!IsEmptyStr(all_recps)) {
3992                         strcat(all_recps, ",");
3993                 }
3994                 strcat(all_recps, cc);
3995         }
3996         if (!IsEmptyStr(bcc)) {
3997                 if (!IsEmptyStr(all_recps)) {
3998                         strcat(all_recps, ",");
3999                 }
4000                 strcat(all_recps, bcc);
4001         }
4002         if (!IsEmptyStr(all_recps)) {
4003                 valid = validate_recipients(all_recps, NULL, 0);
4004         }
4005         else {
4006                 valid = NULL;
4007         }
4008         free(all_recps);
4009
4010         if (msg != NULL) {
4011                 msgnum = CtdlSubmitMsg(msg, valid, "", QP_EADDR);
4012
4013                 if (do_confirm) {
4014                         cprintf("%ld\n", msgnum);
4015                         if (msgnum >= 0L) {
4016                                 cprintf("Message accepted.\n");
4017                         }
4018                         else {
4019                                 cprintf("Internal error.\n");
4020                         }
4021                         if (msg->cm_fields['E'] != NULL) {
4022                                 cprintf("%s\n", msg->cm_fields['E']);
4023                         } else {
4024                                 cprintf("\n");
4025                         }
4026                         cprintf("000\n");
4027                 }
4028
4029                 CtdlFreeMessage(msg);
4030         }
4031         if (valid != NULL) {
4032                 free_recipients(valid);
4033         }
4034         return;
4035 }
4036
4037
4038
4039 /*
4040  * API function to delete messages which match a set of criteria
4041  * (returns the actual number of messages deleted)
4042  */
4043 int CtdlDeleteMessages(char *room_name,         /* which room */
4044                         long *dmsgnums,         /* array of msg numbers to be deleted */
4045                         int num_dmsgnums,       /* number of msgs to be deleted, or 0 for "any" */
4046                         char *content_type      /* or "" for any.  regular expressions expected. */
4047 )
4048 {
4049         struct ctdlroom qrbuf;
4050         struct cdbdata *cdbfr;
4051         long *msglist = NULL;
4052         long *dellist = NULL;
4053         int num_msgs = 0;
4054         int i, j;
4055         int num_deleted = 0;
4056         int delete_this;
4057         struct MetaData smi;
4058         regex_t re;
4059         regmatch_t pm;
4060         int need_to_free_re = 0;
4061
4062         if (content_type) if (!IsEmptyStr(content_type)) {
4063                 regcomp(&re, content_type, 0);
4064                 need_to_free_re = 1;
4065         }
4066         CtdlLogPrintf(CTDL_DEBUG, "CtdlDeleteMessages(%s, %d msgs, %s)\n",
4067                 room_name, num_dmsgnums, content_type);
4068
4069         /* get room record, obtaining a lock... */
4070         if (lgetroom(&qrbuf, room_name) != 0) {
4071                 CtdlLogPrintf(CTDL_ERR, "CtdlDeleteMessages(): Room <%s> not found\n",
4072                         room_name);
4073                 if (need_to_free_re) regfree(&re);
4074                 return (0);     /* room not found */
4075         }
4076         cdbfr = cdb_fetch(CDB_MSGLISTS, &qrbuf.QRnumber, sizeof(long));
4077
4078         if (cdbfr != NULL) {
4079                 dellist = malloc(cdbfr->len);
4080                 msglist = (long *) cdbfr->ptr;
4081                 cdbfr->ptr = NULL;      /* CtdlDeleteMessages() now owns this memory */
4082                 num_msgs = cdbfr->len / sizeof(long);
4083                 cdb_free(cdbfr);
4084         }
4085         if (num_msgs > 0) {
4086                 for (i = 0; i < num_msgs; ++i) {
4087                         delete_this = 0x00;
4088
4089                         /* Set/clear a bit for each criterion */
4090
4091                         /* 0 messages in the list or a null list means that we are
4092                          * interested in deleting any messages which meet the other criteria.
4093                          */
4094                         if ((num_dmsgnums == 0) || (dmsgnums == NULL)) {
4095                                 delete_this |= 0x01;
4096                         }
4097                         else {
4098                                 for (j=0; j<num_dmsgnums; ++j) {
4099                                         if (msglist[i] == dmsgnums[j]) {
4100                                                 delete_this |= 0x01;
4101                                         }
4102                                 }
4103                         }
4104
4105                         if (IsEmptyStr(content_type)) {
4106                                 delete_this |= 0x02;
4107                         } else {
4108                                 GetMetaData(&smi, msglist[i]);
4109                                 if (regexec(&re, smi.meta_content_type, 1, &pm, 0) == 0) {
4110                                         delete_this |= 0x02;
4111                                 }
4112                         }
4113
4114                         /* Delete message only if all bits are set */
4115                         if (delete_this == 0x03) {
4116                                 dellist[num_deleted++] = msglist[i];
4117                                 msglist[i] = 0L;
4118                         }
4119                 }
4120
4121                 num_msgs = sort_msglist(msglist, num_msgs);
4122                 cdb_store(CDB_MSGLISTS, &qrbuf.QRnumber, (int)sizeof(long),
4123                           msglist, (int)(num_msgs * sizeof(long)));
4124
4125                 qrbuf.QRhighest = msglist[num_msgs - 1];
4126         }
4127         lputroom(&qrbuf);
4128
4129         /* Go through the messages we pulled out of the index, and decrement
4130          * their reference counts by 1.  If this is the only room the message
4131          * was in, the reference count will reach zero and the message will
4132          * automatically be deleted from the database.  We do this in a
4133          * separate pass because there might be plug-in hooks getting called,
4134          * and we don't want that happening during an S_ROOMS critical
4135          * section.
4136          */
4137         if (num_deleted) for (i=0; i<num_deleted; ++i) {
4138                 PerformDeleteHooks(qrbuf.QRname, dellist[i]);
4139                 AdjRefCount(dellist[i], -1);
4140         }
4141
4142         /* Now free the memory we used, and go away. */
4143         if (msglist != NULL) free(msglist);
4144         if (dellist != NULL) free(dellist);
4145         CtdlLogPrintf(CTDL_DEBUG, "%d message(s) deleted.\n", num_deleted);
4146         if (need_to_free_re) regfree(&re);
4147         return (num_deleted);
4148 }
4149
4150
4151
4152 /*
4153  * Check whether the current user has permission to delete messages from
4154  * the current room (returns 1 for yes, 0 for no)
4155  */
4156 int CtdlDoIHavePermissionToDeleteMessagesFromThisRoom(void) {
4157         int ra;
4158         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
4159         if (ra & UA_DELETEALLOWED) return(1);
4160         return(0);
4161 }
4162
4163
4164
4165
4166 /*
4167  * Delete message from current room
4168  */
4169 void cmd_dele(char *args)
4170 {
4171         int num_deleted;
4172         int i;
4173         char msgset[SIZ];
4174         char msgtok[32];
4175         long *msgs;
4176         int num_msgs = 0;
4177
4178         extract_token(msgset, args, 0, '|', sizeof msgset);
4179         num_msgs = num_tokens(msgset, ',');
4180         if (num_msgs < 1) {
4181                 cprintf("%d Nothing to do.\n", CIT_OK);
4182                 return;
4183         }
4184
4185         if (CtdlDoIHavePermissionToDeleteMessagesFromThisRoom() == 0) {
4186                 cprintf("%d Higher access required.\n",
4187                         ERROR + HIGHER_ACCESS_REQUIRED);
4188                 return;
4189         }
4190
4191         /*
4192          * Build our message set to be moved/copied
4193          */
4194         msgs = malloc(num_msgs * sizeof(long));
4195         for (i=0; i<num_msgs; ++i) {
4196                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4197                 msgs[i] = atol(msgtok);
4198         }
4199
4200         num_deleted = CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4201         free(msgs);
4202
4203         if (num_deleted) {
4204                 cprintf("%d %d message%s deleted.\n", CIT_OK,
4205                         num_deleted, ((num_deleted != 1) ? "s" : ""));
4206         } else {
4207                 cprintf("%d Message not found.\n", ERROR + MESSAGE_NOT_FOUND);
4208         }
4209 }
4210
4211
4212
4213
4214 /*
4215  * move or copy a message to another room
4216  */
4217 void cmd_move(char *args)
4218 {
4219         char msgset[SIZ];
4220         char msgtok[32];
4221         long *msgs;
4222         int num_msgs = 0;
4223
4224         char targ[ROOMNAMELEN];
4225         struct ctdlroom qtemp;
4226         int err;
4227         int is_copy = 0;
4228         int ra;
4229         int permit = 0;
4230         int i;
4231
4232         extract_token(msgset, args, 0, '|', sizeof msgset);
4233         num_msgs = num_tokens(msgset, ',');
4234         if (num_msgs < 1) {
4235                 cprintf("%d Nothing to do.\n", CIT_OK);
4236                 return;
4237         }
4238
4239         extract_token(targ, args, 1, '|', sizeof targ);
4240         convert_room_name_macros(targ, sizeof targ);
4241         targ[ROOMNAMELEN - 1] = 0;
4242         is_copy = extract_int(args, 2);
4243
4244         if (getroom(&qtemp, targ) != 0) {
4245                 cprintf("%d '%s' does not exist.\n", ERROR + ROOM_NOT_FOUND, targ);
4246                 return;
4247         }
4248
4249         if (!strcasecmp(qtemp.QRname, CC->room.QRname)) {
4250                 cprintf("%d Source and target rooms are the same.\n", ERROR + ALREADY_EXISTS);
4251                 return;
4252         }
4253
4254         getuser(&CC->user, CC->curr_user);
4255         CtdlRoomAccess(&qtemp, &CC->user, &ra, NULL);
4256
4257         /* Check for permission to perform this operation.
4258          * Remember: "CC->room" is source, "qtemp" is target.
4259          */
4260         permit = 0;
4261
4262         /* Aides can move/copy */
4263         if (CC->user.axlevel >= 6) permit = 1;
4264
4265         /* Room aides can move/copy */
4266         if (CC->user.usernum == CC->room.QRroomaide) permit = 1;
4267
4268         /* Permit move/copy from personal rooms */
4269         if ((CC->room.QRflags & QR_MAILBOX)
4270            && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
4271
4272         /* Permit only copy from public to personal room */
4273         if ( (is_copy)
4274            && (!(CC->room.QRflags & QR_MAILBOX))
4275            && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
4276
4277         /* Permit message removal from collaborative delete rooms */
4278         if (CC->room.QRflags2 & QR2_COLLABDEL) permit = 1;
4279
4280         /* Users allowed to post into the target room may move into it too. */
4281         if ((CC->room.QRflags & QR_MAILBOX) &&
4282             (qtemp.QRflags & UA_POSTALLOWED))  permit = 1;
4283
4284         /* User must have access to target room */
4285         if (!(ra & UA_KNOWN))  permit = 0;
4286
4287         if (!permit) {
4288                 cprintf("%d Higher access required.\n",
4289                         ERROR + HIGHER_ACCESS_REQUIRED);
4290                 return;
4291         }
4292
4293         /*
4294          * Build our message set to be moved/copied
4295          */
4296         msgs = malloc(num_msgs * sizeof(long));
4297         for (i=0; i<num_msgs; ++i) {
4298                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4299                 msgs[i] = atol(msgtok);
4300         }
4301
4302         /*
4303          * Do the copy
4304          */
4305         err = CtdlSaveMsgPointersInRoom(targ, msgs, num_msgs, 1, NULL);
4306         if (err != 0) {
4307                 cprintf("%d Cannot store message(s) in %s: error %d\n",
4308                         err, targ, err);
4309                 free(msgs);
4310                 return;
4311         }
4312
4313         /* Now delete the message from the source room,
4314          * if this is a 'move' rather than a 'copy' operation.
4315          */
4316         if (is_copy == 0) {
4317                 CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4318         }
4319         free(msgs);
4320
4321         cprintf("%d Message(s) %s.\n", CIT_OK, (is_copy ? "copied" : "moved") );
4322 }
4323
4324
4325
4326 /*
4327  * GetMetaData()  -  Get the supplementary record for a message
4328  */
4329 void GetMetaData(struct MetaData *smibuf, long msgnum)
4330 {
4331
4332         struct cdbdata *cdbsmi;
4333         long TheIndex;
4334
4335         memset(smibuf, 0, sizeof(struct MetaData));
4336         smibuf->meta_msgnum = msgnum;
4337         smibuf->meta_refcount = 1;      /* Default reference count is 1 */
4338
4339         /* Use the negative of the message number for its supp record index */
4340         TheIndex = (0L - msgnum);
4341
4342         cdbsmi = cdb_fetch(CDB_MSGMAIN, &TheIndex, sizeof(long));
4343         if (cdbsmi == NULL) {
4344                 return;         /* record not found; go with defaults */
4345         }
4346         memcpy(smibuf, cdbsmi->ptr,
4347                ((cdbsmi->len > sizeof(struct MetaData)) ?
4348                 sizeof(struct MetaData) : cdbsmi->len));
4349         cdb_free(cdbsmi);
4350         return;
4351 }
4352
4353
4354 /*
4355  * PutMetaData()  -  (re)write supplementary record for a message
4356  */
4357 void PutMetaData(struct MetaData *smibuf)
4358 {
4359         long TheIndex;
4360
4361         /* Use the negative of the message number for the metadata db index */
4362         TheIndex = (0L - smibuf->meta_msgnum);
4363
4364         cdb_store(CDB_MSGMAIN,
4365                   &TheIndex, (int)sizeof(long),
4366                   smibuf, (int)sizeof(struct MetaData));
4367
4368 }
4369
4370 /*
4371  * AdjRefCount  -  submit an adjustment to the reference count for a message.
4372  *                 (These are just queued -- we actually process them later.)
4373  */
4374 void AdjRefCount(long msgnum, int incr)
4375 {
4376         struct arcq new_arcq;
4377         int rv = 0;
4378
4379         begin_critical_section(S_SUPPMSGMAIN);
4380         if (arcfp == NULL) {
4381                 arcfp = fopen(file_arcq, "ab+");
4382         }
4383         end_critical_section(S_SUPPMSGMAIN);
4384
4385         /* msgnum < 0 means that we're trying to close the file */
4386         if (msgnum < 0) {
4387                 CtdlLogPrintf(CTDL_DEBUG, "Closing the AdjRefCount queue file\n");
4388                 begin_critical_section(S_SUPPMSGMAIN);
4389                 if (arcfp != NULL) {
4390                         fclose(arcfp);
4391                         arcfp = NULL;
4392                 }
4393                 end_critical_section(S_SUPPMSGMAIN);
4394                 return;
4395         }
4396
4397         /*
4398          * If we can't open the queue, perform the operation synchronously.
4399          */
4400         if (arcfp == NULL) {
4401                 TDAP_AdjRefCount(msgnum, incr);
4402                 return;
4403         }
4404
4405         new_arcq.arcq_msgnum = msgnum;
4406         new_arcq.arcq_delta = incr;
4407         rv = fwrite(&new_arcq, sizeof(struct arcq), 1, arcfp);
4408         fflush(arcfp);
4409
4410         return;
4411 }
4412
4413
4414 /*
4415  * TDAP_ProcessAdjRefCountQueue()
4416  *
4417  * Process the queue of message count adjustments that was created by calls
4418  * to AdjRefCount() ... by reading the queue and calling TDAP_AdjRefCount()
4419  * for each one.  This should be an "off hours" operation.
4420  */
4421 int TDAP_ProcessAdjRefCountQueue(void)
4422 {
4423         char file_arcq_temp[PATH_MAX];
4424         int r;
4425         FILE *fp;
4426         struct arcq arcq_rec;
4427         int num_records_processed = 0;
4428
4429         snprintf(file_arcq_temp, sizeof file_arcq_temp, "%s.%04x", file_arcq, rand());
4430
4431         begin_critical_section(S_SUPPMSGMAIN);
4432         if (arcfp != NULL) {
4433                 fclose(arcfp);
4434                 arcfp = NULL;
4435         }
4436
4437         r = link(file_arcq, file_arcq_temp);
4438         if (r != 0) {
4439                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4440                 end_critical_section(S_SUPPMSGMAIN);
4441                 return(num_records_processed);
4442         }
4443
4444         unlink(file_arcq);
4445         end_critical_section(S_SUPPMSGMAIN);
4446
4447         fp = fopen(file_arcq_temp, "rb");
4448         if (fp == NULL) {
4449                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4450                 return(num_records_processed);
4451         }
4452
4453         while (fread(&arcq_rec, sizeof(struct arcq), 1, fp) == 1) {
4454                 TDAP_AdjRefCount(arcq_rec.arcq_msgnum, arcq_rec.arcq_delta);
4455                 ++num_records_processed;
4456         }
4457
4458         fclose(fp);
4459         r = unlink(file_arcq_temp);
4460         if (r != 0) {
4461                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4462         }
4463
4464         return(num_records_processed);
4465 }
4466
4467
4468
4469 /*
4470  * TDAP_AdjRefCount  -  adjust the reference count for a message.
4471  *                      This one does it "for real" because it's called by
4472  *                      the autopurger function that processes the queue
4473  *                      created by AdjRefCount().   If a message's reference
4474  *                      count becomes zero, we also delete the message from
4475  *                      disk and de-index it.
4476  */
4477 void TDAP_AdjRefCount(long msgnum, int incr)
4478 {
4479
4480         struct MetaData smi;
4481         long delnum;
4482
4483         /* This is a *tight* critical section; please keep it that way, as
4484          * it may get called while nested in other critical sections.
4485          * Complicating this any further will surely cause deadlock!
4486          */
4487         begin_critical_section(S_SUPPMSGMAIN);
4488         GetMetaData(&smi, msgnum);
4489         smi.meta_refcount += incr;
4490         PutMetaData(&smi);
4491         end_critical_section(S_SUPPMSGMAIN);
4492         CtdlLogPrintf(CTDL_DEBUG, "msg %ld ref count delta %+d, is now %d\n",
4493                 msgnum, incr, smi.meta_refcount);
4494
4495         /* If the reference count is now zero, delete the message
4496          * (and its supplementary record as well).
4497          */
4498         if (smi.meta_refcount == 0) {
4499                 CtdlLogPrintf(CTDL_DEBUG, "Deleting message <%ld>\n", msgnum);
4500
4501                 /* Call delete hooks with NULL room to show it has gone altogether */
4502                 PerformDeleteHooks(NULL, msgnum);
4503
4504                 /* Remove from message base */
4505                 delnum = msgnum;
4506                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
4507                 cdb_delete(CDB_BIGMSGS, &delnum, (int)sizeof(long));
4508
4509                 /* Remove metadata record */
4510                 delnum = (0L - msgnum);
4511                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
4512         }
4513
4514 }
4515
4516 /*
4517  * Write a generic object to this room
4518  *
4519  * Note: this could be much more efficient.  Right now we use two temporary
4520  * files, and still pull the message into memory as with all others.
4521  */
4522 void CtdlWriteObject(char *req_room,                    /* Room to stuff it in */
4523                         char *content_type,             /* MIME type of this object */
4524                         char *raw_message,              /* Data to be written */
4525                         off_t raw_length,               /* Size of raw_message */
4526                         struct ctdluser *is_mailbox,    /* Mailbox room? */
4527                         int is_binary,                  /* Is encoding necessary? */
4528                         int is_unique,                  /* Del others of this type? */
4529                         unsigned int flags              /* Internal save flags */
4530                         )
4531 {
4532
4533         struct ctdlroom qrbuf;
4534         char roomname[ROOMNAMELEN];
4535         struct CtdlMessage *msg;
4536         char *encoded_message = NULL;
4537
4538         if (is_mailbox != NULL) {
4539                 MailboxName(roomname, sizeof roomname, is_mailbox, req_room);
4540         }
4541         else {
4542                 safestrncpy(roomname, req_room, sizeof(roomname));
4543         }
4544
4545         CtdlLogPrintf(CTDL_DEBUG, "Raw length is %ld\n", (long)raw_length);
4546
4547         if (is_binary) {
4548                 encoded_message = malloc((size_t) (((raw_length * 134) / 100) + 4096 ) );
4549         }
4550         else {
4551                 encoded_message = malloc((size_t)(raw_length + 4096));
4552         }
4553
4554         sprintf(encoded_message, "Content-type: %s\n", content_type);
4555
4556         if (is_binary) {
4557                 sprintf(&encoded_message[strlen(encoded_message)],
4558                         "Content-transfer-encoding: base64\n\n"
4559                 );
4560         }
4561         else {
4562                 sprintf(&encoded_message[strlen(encoded_message)],
4563                         "Content-transfer-encoding: 7bit\n\n"
4564                 );
4565         }
4566
4567         if (is_binary) {
4568                 CtdlEncodeBase64(
4569                         &encoded_message[strlen(encoded_message)],
4570                         raw_message,
4571                         (int)raw_length,
4572                         0
4573                 );
4574         }
4575         else {
4576                 memcpy(
4577                         &encoded_message[strlen(encoded_message)],
4578                         raw_message,
4579                         (int)(raw_length+1)
4580                 );
4581         }
4582
4583         CtdlLogPrintf(CTDL_DEBUG, "Allocating\n");
4584         msg = malloc(sizeof(struct CtdlMessage));
4585         memset(msg, 0, sizeof(struct CtdlMessage));
4586         msg->cm_magic = CTDLMESSAGE_MAGIC;
4587         msg->cm_anon_type = MES_NORMAL;
4588         msg->cm_format_type = 4;
4589         msg->cm_fields['A'] = strdup(CC->user.fullname);
4590         msg->cm_fields['O'] = strdup(req_room);
4591         msg->cm_fields['N'] = strdup(config.c_nodename);
4592         msg->cm_fields['H'] = strdup(config.c_humannode);
4593         msg->cm_flags = flags;
4594
4595         msg->cm_fields['M'] = encoded_message;
4596
4597         /* Create the requested room if we have to. */
4598         if (getroom(&qrbuf, roomname) != 0) {
4599                 create_room(roomname,
4600                         ( (is_mailbox != NULL) ? 5 : 3 ),
4601                         "", 0, 1, 0, VIEW_BBS);
4602         }
4603         /* If the caller specified this object as unique, delete all
4604          * other objects of this type that are currently in the room.
4605          */
4606         if (is_unique) {
4607                 CtdlLogPrintf(CTDL_DEBUG, "Deleted %d other msgs of this type\n",
4608                         CtdlDeleteMessages(roomname, NULL, 0, content_type)
4609                 );
4610         }
4611         /* Now write the data */
4612         CtdlSubmitMsg(msg, NULL, roomname, 0);
4613         CtdlFreeMessage(msg);
4614 }
4615
4616
4617
4618
4619
4620
4621 void CtdlGetSysConfigBackend(long msgnum, void *userdata) {
4622         config_msgnum = msgnum;
4623 }
4624
4625
4626 char *CtdlGetSysConfig(char *sysconfname) {
4627         char hold_rm[ROOMNAMELEN];
4628         long msgnum;
4629         char *conf;
4630         struct CtdlMessage *msg;
4631         char buf[SIZ];
4632
4633         strcpy(hold_rm, CC->room.QRname);
4634         if (getroom(&CC->room, SYSCONFIGROOM) != 0) {
4635                 getroom(&CC->room, hold_rm);
4636                 return NULL;
4637         }
4638
4639
4640         /* We want the last (and probably only) config in this room */
4641         begin_critical_section(S_CONFIG);
4642         config_msgnum = (-1L);
4643         CtdlForEachMessage(MSGS_LAST, 1, NULL, sysconfname, NULL,
4644                 CtdlGetSysConfigBackend, NULL);
4645         msgnum = config_msgnum;
4646         end_critical_section(S_CONFIG);
4647
4648         if (msgnum < 0L) {
4649                 conf = NULL;
4650         }
4651         else {
4652                 msg = CtdlFetchMessage(msgnum, 1);
4653                 if (msg != NULL) {
4654                         conf = strdup(msg->cm_fields['M']);
4655                         CtdlFreeMessage(msg);
4656                 }
4657                 else {
4658                         conf = NULL;
4659                 }
4660         }
4661
4662         getroom(&CC->room, hold_rm);
4663
4664         if (conf != NULL) do {
4665                 extract_token(buf, conf, 0, '\n', sizeof buf);
4666                 strcpy(conf, &conf[strlen(buf)+1]);
4667         } while ( (!IsEmptyStr(conf)) && (!IsEmptyStr(buf)) );
4668
4669         return(conf);
4670 }
4671
4672
4673 void CtdlPutSysConfig(char *sysconfname, char *sysconfdata) {
4674         CtdlWriteObject(SYSCONFIGROOM, sysconfname, sysconfdata, (strlen(sysconfdata)+1), NULL, 0, 1, 0);
4675 }
4676
4677
4678 /*
4679  * Determine whether a given Internet address belongs to the current user
4680  */
4681 int CtdlIsMe(char *addr, int addr_buf_len)
4682 {
4683         struct recptypes *recp;
4684         int i;
4685
4686         recp = validate_recipients(addr, NULL, 0);
4687         if (recp == NULL) return(0);
4688
4689         if (recp->num_local == 0) {
4690                 free_recipients(recp);
4691                 return(0);
4692         }
4693
4694         for (i=0; i<recp->num_local; ++i) {
4695                 extract_token(addr, recp->recp_local, i, '|', addr_buf_len);
4696                 if (!strcasecmp(addr, CC->user.fullname)) {
4697                         free_recipients(recp);
4698                         return(1);
4699                 }
4700         }
4701
4702         free_recipients(recp);
4703         return(0);
4704 }
4705
4706
4707 /*
4708  * Citadel protocol command to do the same
4709  */
4710 void cmd_isme(char *argbuf) {
4711         char addr[256];
4712
4713         if (CtdlAccessCheck(ac_logged_in)) return;
4714         extract_token(addr, argbuf, 0, '|', sizeof addr);
4715
4716         if (CtdlIsMe(addr, sizeof addr)) {
4717                 cprintf("%d %s\n", CIT_OK, addr);
4718         }
4719         else {
4720                 cprintf("%d Not you.\n", ERROR + ILLEGAL_VALUE);
4721         }
4722
4723 }
4724
4725
4726 /*****************************************************************************/
4727 /*                      MODULE INITIALIZATION STUFF                          */
4728 /*****************************************************************************/
4729
4730 CTDL_MODULE_INIT(msgbase)
4731 {
4732         CtdlRegisterProtoHook(cmd_msgs, "MSGS", "Output a list of messages in the current room");
4733         CtdlRegisterProtoHook(cmd_msg0, "MSG0", "Output a message in plain text format");
4734         CtdlRegisterProtoHook(cmd_msg2, "MSG2", "Output a message in RFC822 format");
4735         CtdlRegisterProtoHook(cmd_msg3, "MSG3", "Output a message in raw format (deprecated)");
4736         CtdlRegisterProtoHook(cmd_msg4, "MSG4", "Output a message in the client's preferred format");
4737         CtdlRegisterProtoHook(cmd_msgp, "MSGP", "Select preferred format for MSG4 output");
4738         CtdlRegisterProtoHook(cmd_opna, "OPNA", "Open an attachment for download");
4739         CtdlRegisterProtoHook(cmd_dlat, "DLAT", "Download an attachment");
4740         CtdlRegisterProtoHook(cmd_ent0, "ENT0", "Enter a message");
4741         CtdlRegisterProtoHook(cmd_dele, "DELE", "Delete a message");
4742         CtdlRegisterProtoHook(cmd_move, "MOVE", "Move or copy a message to another room");
4743         CtdlRegisterProtoHook(cmd_isme, "ISME", "Determine whether an email address belongs to a user");
4744
4745         /* return our Subversion id for the Log */
4746         return "$Id$";
4747 }