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                 StrBufRemove_token(vset, 0, ',');
 509                 w = 1;
 510
 511                 /*
 512                  * If we're truncating the sequence set of messages marked with the 'seen' flag,
 513                  * we want the earliest messages (the truncated ones) to be marked, not unmarked.
 514                  * Otherwise messages at the beginning will suddenly appear to be 'unseen'.
 515                  */
 516                 if (which_set == ctdlsetseen_seen) {
 517                         StrBuf *first_tok;
 518                         first_tok = NewStrBuf();
 519                         StrBufExtract_token(first_tok, vset, 0, ',');
 520                         StrBufRemove_token(vset, 0, ',');
 521
 522                         if (StrBufNum_tokens(first_tok, ':') > 1) {
 523                                 StrBufRemove_token(first_tok, 0, ':');
 524                         }
 525
 526                         StrBuf *new_set;
 527                         new_set = NewStrBuf();
 528                         StrBufAppendBufPlain(new_set, HKEY("1:"), 0);
 529                         StrBufAppendBuf(new_set, first_tok, 0);
 530                         StrBufAppendBufPlain(new_set, HKEY(":"), 0);
 531                         StrBufAppendBuf(new_set, vset, 0);
 532
 533                         FreeStrBuf(&vset);
 534                         FreeStrBuf(&first_tok);
 535                         vset = new_set;
 536                 }
 537         }
 538
 539         CtdlLogPrintf(CTDL_DEBUG, " after update: %s\n", ChrPtr(vset));
 540
 541         /* Decide which message set we're manipulating */
 542         switch (which_set) {
 543                 case ctdlsetseen_seen:
 544                         safestrncpy(vbuf.v_seen, ChrPtr(vset), sizeof vbuf.v_seen);
 545                         break;
 546                 case ctdlsetseen_answered:
 547                         safestrncpy(vbuf.v_answered, ChrPtr(vset), sizeof vbuf.v_answered);
 548                         break;
 549         }
 550
 551         free(is_set);
 552         free(msglist);
 553         if (w) {
 554                 CtdlSetRelationship(&vbuf, which_user, which_room);
 555         }
 556         FreeStrBuf(&vset);
 557 }
 558
 559
 560 /*
 561  * API function to perform an operation for each qualifying message in the
 562  * current room.  (Returns the number of messages processed.)
 563  */
 564 int CtdlForEachMessage(int mode, long ref, char *search_string,
 565                         char *content_type,
 566                         struct CtdlMessage *compare,
 567                         void (*CallBack) (long, void *),
 568                         void *userdata)
 569 {
 570
 571         int a, i, j;
 572         struct visit vbuf;
 573         struct cdbdata *cdbfr;
 574         long *msglist = NULL;
 575         int num_msgs = 0;
 576         int num_processed = 0;
 577         long thismsg;
 578         struct MetaData smi;
 579         struct CtdlMessage *msg = NULL;
 580         int is_seen = 0;
 581         long lastold = 0L;
 582         int printed_lastold = 0;
 583         int num_search_msgs = 0;
 584         long *search_msgs = NULL;
 585         regex_t re;
 586         int need_to_free_re = 0;
 587         regmatch_t pm;
 588
 589         if ((content_type) && (!IsEmptyStr(content_type))) {
 590                 regcomp(&re, content_type, 0);
 591                 need_to_free_re = 1;
 592         }
 593
 594         /* Learn about the user and room in question */
 595         getuser(&CC->user, CC->curr_user);
 596         CtdlGetRelationship(&vbuf, &CC->user, &CC->room);
 597
 598         /* Load the message list */
 599         cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
 600         if (cdbfr != NULL) {
 601                 msglist = (long *) cdbfr->ptr;
 602                 num_msgs = cdbfr->len / sizeof(long);
 603         } else {
 604                 if (need_to_free_re) regfree(&re);
 605                 return 0;       /* No messages at all?  No further action. */
 606         }
 607
 608
 609         /*
 610          * Now begin the traversal.
 611          */
 612         if (num_msgs > 0) for (a = 0; a < num_msgs; ++a) {
 613
 614                 /* If the caller is looking for a specific MIME type, filter
 615                  * out all messages which are not of the type requested.
 616                  */
 617                 if ((content_type != NULL) && (!IsEmptyStr(content_type))) {
 618
 619                         /* This call to GetMetaData() sits inside this loop
 620                          * so that we only do the extra database read per msg
 621                          * if we need to.  Doing the extra read all the time
 622                          * really kills the server.  If we ever need to use
 623                          * metadata for another search criterion, we need to
 624                          * move the read somewhere else -- but still be smart
 625                          * enough to only do the read if the caller has
 626                          * specified something that will need it.
 627                          */
 628                         GetMetaData(&smi, msglist[a]);
 629
 630                         /* if (strcasecmp(smi.meta_content_type, content_type)) { old non-regex way */
 631                         if (regexec(&re, smi.meta_content_type, 1, &pm, 0) != 0) {
 632                                 msglist[a] = 0L;
 633                         }
 634                 }
 635         }
 636
 637         num_msgs = sort_msglist(msglist, num_msgs);
 638
 639         /* If a template was supplied, filter out the messages which
 640          * don't match.  (This could induce some delays!)
 641          */
 642         if (num_msgs > 0) {
 643                 if (compare != NULL) {
 644                         for (a = 0; a < num_msgs; ++a) {
 645                                 msg = CtdlFetchMessage(msglist[a], 1);
 646                                 if (msg != NULL) {
 647                                         if (CtdlMsgCmp(msg, compare)) {
 648                                                 msglist[a] = 0L;
 649                                         }
 650                                         CtdlFreeMessage(msg);
 651                                 }
 652                         }
 653                 }
 654         }
 655
 656         /* If a search string was specified, get a message list from
 657          * the full text index and remove messages which aren't on both
 658          * lists.
 659          *
 660          * How this works:
 661          * Since the lists are sorted and strictly ascending, and the
 662          * output list is guaranteed to be shorter than or equal to the
 663          * input list, we overwrite the bottom of the input list.  This
 664          * eliminates the need to memmove big chunks of the list over and
 665          * over again.
 666          */
 667         if ( (num_msgs > 0) && (mode == MSGS_SEARCH) && (search_string) ) {
 668
 669                 /* Call search module via hook mechanism.
 670                  * NULL means use any search function available.
 671                  * otherwise replace with a char * to name of search routine
 672                  */
 673                 CtdlModuleDoSearch(&num_search_msgs, &search_msgs, search_string, "fulltext");
 674
 675                 if (num_search_msgs > 0) {
 676
 677                         int orig_num_msgs;
 678
 679                         orig_num_msgs = num_msgs;
 680                         num_msgs = 0;
 681                         for (i=0; i<orig_num_msgs; ++i) {
 682                                 for (j=0; j<num_search_msgs; ++j) {
 683                                         if (msglist[i] == search_msgs[j]) {
 684                                                 msglist[num_msgs++] = msglist[i];
 685                                         }
 686                                 }
 687                         }
 688                 }
 689                 else {
 690                         num_msgs = 0;   /* No messages qualify */
 691                 }
 692                 if (search_msgs != NULL) free(search_msgs);
 693
 694                 /* Now that we've purged messages which don't contain the search
 695                  * string, treat a MSGS_SEARCH just like a MSGS_ALL from this
 696                  * point on.
 697                  */
 698                 mode = MSGS_ALL;
 699         }
 700
 701         /*
 702          * Now iterate through the message list, according to the
 703          * criteria supplied by the caller.
 704          */
 705         if (num_msgs > 0)
 706                 for (a = 0; a < num_msgs; ++a) {
 707                         thismsg = msglist[a];
 708                         if (mode == MSGS_ALL) {
 709                                 is_seen = 0;
 710                         }
 711                         else {
 712                                 is_seen = is_msg_in_sequence_set(
 713                                                         vbuf.v_seen, thismsg);
 714                                 if (is_seen) lastold = thismsg;
 715                         }
 716                         if ((thismsg > 0L)
 717                             && (
 718
 719                                        (mode == MSGS_ALL)
 720                                        || ((mode == MSGS_OLD) && (is_seen))
 721                                        || ((mode == MSGS_NEW) && (!is_seen))
 722                                        || ((mode == MSGS_LAST) && (a >= (num_msgs - ref)))
 723                                    || ((mode == MSGS_FIRST) && (a < ref))
 724                                 || ((mode == MSGS_GT) && (thismsg > ref))
 725                                 || ((mode == MSGS_EQ) && (thismsg == ref))
 726                             )
 727                             ) {
 728                                 if ((mode == MSGS_NEW) && (CC->user.flags & US_LASTOLD) && (lastold > 0L) && (printed_lastold == 0) && (!is_seen)) {
 729                                         if (CallBack)
 730                                                 CallBack(lastold, userdata);
 731                                         printed_lastold = 1;
 732                                         ++num_processed;
 733                                 }
 734                                 if (CallBack) CallBack(thismsg, userdata);
 735                                 ++num_processed;
 736                         }
 737                 }
 738         cdb_free(cdbfr);        /* Clean up */
 739         if (need_to_free_re) regfree(&re);
 740         return num_processed;
 741 }
 742
 743
 744
 745 /*
 746  * cmd_msgs()  -  get list of message #'s in this room
 747  *              implements the MSGS server command using CtdlForEachMessage()
 748  */
 749 void cmd_msgs(char *cmdbuf)
 750 {
 751         int mode = 0;
 752         char which[16];
 753         char buf[256];
 754         char tfield[256];
 755         char tvalue[256];
 756         int cm_ref = 0;
 757         int i;
 758         int with_template = 0;
 759         struct CtdlMessage *template = NULL;
 760         int with_headers = 0;
 761         char search_string[1024];
 762
 763         extract_token(which, cmdbuf, 0, '|', sizeof which);
 764         cm_ref = extract_int(cmdbuf, 1);
 765         extract_token(search_string, cmdbuf, 1, '|', sizeof search_string);
 766         with_template = extract_int(cmdbuf, 2);
 767         with_headers = extract_int(cmdbuf, 3);
 768
 769         strcat(which, "   ");
 770         if (!strncasecmp(which, "OLD", 3))
 771                 mode = MSGS_OLD;
 772         else if (!strncasecmp(which, "NEW", 3))
 773                 mode = MSGS_NEW;
 774         else if (!strncasecmp(which, "FIRST", 5))
 775                 mode = MSGS_FIRST;
 776         else if (!strncasecmp(which, "LAST", 4))
 777                 mode = MSGS_LAST;
 778         else if (!strncasecmp(which, "GT", 2))
 779                 mode = MSGS_GT;
 780         else if (!strncasecmp(which, "SEARCH", 6))
 781                 mode = MSGS_SEARCH;
 782         else
 783                 mode = MSGS_ALL;
 784
 785         if ((!(CC->logged_in)) && (!(CC->internal_pgm))) {
 786                 cprintf("%d not logged in\n", ERROR + NOT_LOGGED_IN);
 787                 return;
 788         }
 789
 790         if ( (mode == MSGS_SEARCH) && (!config.c_enable_fulltext) ) {
 791                 cprintf("%d Full text index is not enabled on this server.\n",
 792                         ERROR + CMD_NOT_SUPPORTED);
 793                 return;
 794         }
 795
 796         if (with_template) {
 797                 unbuffer_output();
 798                 cprintf("%d Send template then receive message list\n",
 799                         START_CHAT_MODE);
 800                 template = (struct CtdlMessage *)
 801                         malloc(sizeof(struct CtdlMessage));
 802                 memset(template, 0, sizeof(struct CtdlMessage));
 803                 template->cm_magic = CTDLMESSAGE_MAGIC;
 804                 template->cm_anon_type = MES_NORMAL;
 805
 806                 while(client_getln(buf, sizeof buf) >= 0 && strcmp(buf,"000")) {
 807                         extract_token(tfield, buf, 0, '|', sizeof tfield);
 808                         extract_token(tvalue, buf, 1, '|', sizeof tvalue);
 809                         for (i='A'; i<='Z'; ++i) if (msgkeys[i]!=NULL) {
 810                                 if (!strcasecmp(tfield, msgkeys[i])) {
 811                                         template->cm_fields[i] =
 812                                                 strdup(tvalue);
 813                                 }
 814                         }
 815                 }
 816                 buffer_output();
 817         }
 818         else {
 819                 cprintf("%d  \n", LISTING_FOLLOWS);
 820         }
 821
 822         CtdlForEachMessage(mode,
 823                         ( (mode == MSGS_SEARCH) ? 0 : cm_ref ),
 824                         ( (mode == MSGS_SEARCH) ? search_string : NULL ),
 825                         NULL,
 826                         template,
 827                         (with_headers ? headers_listing : simple_listing),
 828                         NULL
 829         );
 830         if (template != NULL) CtdlFreeMessage(template);
 831         cprintf("000\n");
 832 }
 833
 834
 835
 836
 837 /*
 838  * help_subst()  -  support routine for help file viewer
 839  */
 840 void help_subst(char *strbuf, char *source, char *dest)
 841 {
 842         char workbuf[SIZ];
 843         int p;
 844
 845         while (p = pattern2(strbuf, source), (p >= 0)) {
 846                 strcpy(workbuf, &strbuf[p + strlen(source)]);
 847                 strcpy(&strbuf[p], dest);
 848                 strcat(strbuf, workbuf);
 849         }
 850 }
 851
 852
 853 void do_help_subst(char *buffer)
 854 {
 855         char buf2[16];
 856
 857         help_subst(buffer, "^nodename", config.c_nodename);
 858         help_subst(buffer, "^humannode", config.c_humannode);
 859         help_subst(buffer, "^fqdn", config.c_fqdn);
 860         help_subst(buffer, "^username", CC->user.fullname);
 861         snprintf(buf2, sizeof buf2, "%ld", CC->user.usernum);
 862         help_subst(buffer, "^usernum", buf2);
 863         help_subst(buffer, "^sysadm", config.c_sysadm);
 864         help_subst(buffer, "^variantname", CITADEL);
 865         snprintf(buf2, sizeof buf2, "%d", config.c_maxsessions);
 866         help_subst(buffer, "^maxsessions", buf2);
 867         help_subst(buffer, "^bbsdir", ctdl_message_dir);
 868 }
 869
 870
 871
 872 /*
 873  * memfmout()  -  Citadel text formatter and paginator.
 874  *           Although the original purpose of this routine was to format
 875  *           text to the reader's screen width, all we're really using it
 876  *           for here is to format text out to 80 columns before sending it
 877  *           to the client.  The client software may reformat it again.
 878  */
 879 void memfmout(
 880         char *mptr,             /* where are we going to get our text from? */
 881         char subst,             /* nonzero if we should do substitutions */
 882         char *nl)               /* string to terminate lines with */
 883 {
 884         int a, b, c;
 885         int real = 0;
 886         int old = 0;
 887         cit_uint8_t ch;
 888         char aaa[140];
 889         char buffer[SIZ];
 890         static int width = 80;
 891
 892         strcpy(aaa, "");
 893         old = 255;
 894         strcpy(buffer, "");
 895         c = 1;                  /* c is the current pos */
 896
 897         do {
 898                 if (subst) {
 899                         while (ch = *mptr, ((ch != 0) && (strlen(buffer) < 126))) {
 900                                 ch = *mptr++;
 901                                 buffer[strlen(buffer) + 1] = 0;
 902                                 buffer[strlen(buffer)] = ch;
 903                         }
 904
 905                         if (buffer[0] == '^')
 906                                 do_help_subst(buffer);
 907
 908                         buffer[strlen(buffer) + 1] = 0;
 909                         a = buffer[0];
 910                         strcpy(buffer, &buffer[1]);
 911                 } else {
 912                         ch = *mptr++;
 913                 }
 914
 915                 old = real;
 916                 real = ch;
 917
 918                 if (((ch == 13) || (ch == 10)) && (old != 13) && (old != 10)) {
 919                         ch = 32;
 920                 }
 921                 if (((old == 13) || (old == 10)) && (isspace(real))) {
 922                         cprintf("%s", nl);
 923                         c = 1;
 924                 }
 925                 if (ch > 32) {
 926                         if (((strlen(aaa) + c) > (width - 5)) && (strlen(aaa) > (width - 5))) {
 927                                 cprintf("%s%s", nl, aaa);
 928                                 c = strlen(aaa);
 929                                 aaa[0] = 0;
 930                         }
 931                         b = strlen(aaa);
 932                         aaa[b] = ch;
 933                         aaa[b + 1] = 0;
 934                 }
 935                 if (ch == 32) {
 936                         if ((strlen(aaa) + c) > (width - 5)) {
 937                                 cprintf("%s", nl);
 938                                 c = 1;
 939                         }
 940                         cprintf("%s ", aaa);
 941                         ++c;
 942                         c = c + strlen(aaa);
 943                         strcpy(aaa, "");
 944                 }
 945                 if ((ch == 13) || (ch == 10)) {
 946                         cprintf("%s%s", aaa, nl);
 947                         c = 1;
 948                         strcpy(aaa, "");
 949                 }
 950
 951         } while (ch > 0);
 952
 953         cprintf("%s%s", aaa, nl);
 954 }
 955
 956
 957
 958 /*
 959  * Callback function for mime parser that simply lists the part
 960  */
 961 void list_this_part(char *name, char *filename, char *partnum, char *disp,
 962                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
 963                     char *cbid, void *cbuserdata)
 964 {
 965         struct ma_info *ma;
 966
 967         ma = (struct ma_info *)cbuserdata;
 968         if (ma->is_ma == 0) {
 969                 cprintf("part=%s|%s|%s|%s|%s|%ld|%s\n",
 970                         name, filename, partnum, disp, cbtype, (long)length, cbid);
 971         }
 972 }
 973
 974 /*
 975  * Callback function for multipart prefix
 976  */
 977 void list_this_pref(char *name, char *filename, char *partnum, char *disp,
 978                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
 979                     char *cbid, void *cbuserdata)
 980 {
 981         struct ma_info *ma;
 982
 983         ma = (struct ma_info *)cbuserdata;
 984         if (!strcasecmp(cbtype, "multipart/alternative")) {
 985                 ++ma->is_ma;
 986         }
 987
 988         if (ma->is_ma == 0) {
 989                 cprintf("pref=%s|%s\n", partnum, cbtype);
 990         }
 991 }
 992
 993 /*
 994  * Callback function for multipart sufffix
 995  */
 996 void list_this_suff(char *name, char *filename, char *partnum, char *disp,
 997                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
 998                     char *cbid, void *cbuserdata)
 999 {
1000         struct ma_info *ma;
1001
1002         ma = (struct ma_info *)cbuserdata;
1003         if (ma->is_ma == 0) {
1004                 cprintf("suff=%s|%s\n", partnum, cbtype);
1005         }
1006         if (!strcasecmp(cbtype, "multipart/alternative")) {
1007                 --ma->is_ma;
1008         }
1009 }
1010
1011
1012 /*
1013  * Callback function for mime parser that opens a section for downloading
1014  */
1015 void mime_download(char *name, char *filename, char *partnum, char *disp,
1016                    void *content, char *cbtype, char *cbcharset, size_t length,
1017                    char *encoding, char *cbid, void *cbuserdata)
1018 {
1019         int rv = 0;
1020
1021         /* Silently go away if there's already a download open. */
1022         if (CC->download_fp != NULL)
1023                 return;
1024
1025         if (
1026                 (!IsEmptyStr(partnum) && (!strcasecmp(CC->download_desired_section, partnum)))
1027         ||      (!IsEmptyStr(cbid) && (!strcasecmp(CC->download_desired_section, cbid)))
1028         ) {
1029                 CC->download_fp = tmpfile();
1030                 if (CC->download_fp == NULL)
1031                         return;
1032
1033                 rv = fwrite(content, length, 1, CC->download_fp);
1034                 fflush(CC->download_fp);
1035                 rewind(CC->download_fp);
1036
1037                 OpenCmdResult(filename, cbtype);
1038         }
1039 }
1040
1041
1042
1043 /*
1044  * Callback function for mime parser that outputs a section all at once.
1045  * We can specify the desired section by part number *or* content-id.
1046  */
1047 void mime_spew_section(char *name, char *filename, char *partnum, char *disp,
1048                    void *content, char *cbtype, char *cbcharset, size_t length,
1049                    char *encoding, char *cbid, void *cbuserdata)
1050 {
1051         int *found_it = (int *)cbuserdata;
1052
1053         if (
1054                 (!IsEmptyStr(partnum) && (!strcasecmp(CC->download_desired_section, partnum)))
1055         ||      (!IsEmptyStr(cbid) && (!strcasecmp(CC->download_desired_section, cbid)))
1056         ) {
1057                 *found_it = 1;
1058                 cprintf("%d %d|-1|%s|%s\n",
1059                         BINARY_FOLLOWS,
1060                         (int)length,
1061                         filename,
1062                         cbtype
1063                 );
1064                 client_write(content, length);
1065         }
1066 }
1067
1068
1069
1070 /*
1071  * Load a message from disk into memory.
1072  * This is used by CtdlOutputMsg() and other fetch functions.
1073  *
1074  * NOTE: Caller is responsible for freeing the returned CtdlMessage struct
1075  *       using the CtdlMessageFree() function.
1076  */
1077 struct CtdlMessage *CtdlFetchMessage(long msgnum, int with_body)
1078 {
1079         struct cdbdata *dmsgtext;
1080         struct CtdlMessage *ret = NULL;
1081         char *mptr;
1082         char *upper_bound;
1083         cit_uint8_t ch;
1084         cit_uint8_t field_header;
1085
1086         CtdlLogPrintf(CTDL_DEBUG, "CtdlFetchMessage(%ld, %d)\n", msgnum, with_body);
1087
1088         dmsgtext = cdb_fetch(CDB_MSGMAIN, &msgnum, sizeof(long));
1089         if (dmsgtext == NULL) {
1090                 return NULL;
1091         }
1092         mptr = dmsgtext->ptr;
1093         upper_bound = mptr + dmsgtext->len;
1094
1095         /* Parse the three bytes that begin EVERY message on disk.
1096          * The first is always 0xFF, the on-disk magic number.
1097          * The second is the anonymous/public type byte.
1098          * The third is the format type byte (vari, fixed, or MIME).
1099          */
1100         ch = *mptr++;
1101         if (ch != 255) {
1102                 CtdlLogPrintf(CTDL_ERR, "Message %ld appears to be corrupted.\n", msgnum);
1103                 cdb_free(dmsgtext);
1104                 return NULL;
1105         }
1106         ret = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
1107         memset(ret, 0, sizeof(struct CtdlMessage));
1108
1109         ret->cm_magic = CTDLMESSAGE_MAGIC;
1110         ret->cm_anon_type = *mptr++;    /* Anon type byte */
1111         ret->cm_format_type = *mptr++;  /* Format type byte */
1112
1113         /*
1114          * The rest is zero or more arbitrary fields.  Load them in.
1115          * We're done when we encounter either a zero-length field or
1116          * have just processed the 'M' (message text) field.
1117          */
1118         do {
1119                 if (mptr >= upper_bound) {
1120                         break;
1121                 }
1122                 field_header = *mptr++;
1123                 ret->cm_fields[field_header] = strdup(mptr);
1124
1125                 while (*mptr++ != 0);   /* advance to next field */
1126
1127         } while ((mptr < upper_bound) && (field_header != 'M'));
1128
1129         cdb_free(dmsgtext);
1130
1131         /* Always make sure there's something in the msg text field.  If
1132          * it's NULL, the message text is most likely stored separately,
1133          * so go ahead and fetch that.  Failing that, just set a dummy
1134          * body so other code doesn't barf.
1135          */
1136         if ( (ret->cm_fields['M'] == NULL) && (with_body) ) {
1137                 dmsgtext = cdb_fetch(CDB_BIGMSGS, &msgnum, sizeof(long));
1138                 if (dmsgtext != NULL) {
1139                         ret->cm_fields['M'] = strdup(dmsgtext->ptr);
1140                         cdb_free(dmsgtext);
1141                 }
1142         }
1143         if (ret->cm_fields['M'] == NULL) {
1144                 ret->cm_fields['M'] = strdup("\r\n\r\n (no text)\r\n");
1145         }
1146
1147         /* Perform "before read" hooks (aborting if any return nonzero) */
1148         if (PerformMessageHooks(ret, EVT_BEFOREREAD) > 0) {
1149                 CtdlFreeMessage(ret);
1150                 return NULL;
1151         }
1152
1153         return (ret);
1154 }
1155
1156
1157 /*
1158  * Returns 1 if the supplied pointer points to a valid Citadel message.
1159  * If the pointer is NULL or the magic number check fails, returns 0.
1160  */
1161 int is_valid_message(struct CtdlMessage *msg) {
1162         if (msg == NULL)
1163                 return 0;
1164         if ((msg->cm_magic) != CTDLMESSAGE_MAGIC) {
1165                 CtdlLogPrintf(CTDL_WARNING, "is_valid_message() -- self-check failed\n");
1166                 return 0;
1167         }
1168         return 1;
1169 }
1170
1171
1172 /*
1173  * 'Destructor' for struct CtdlMessage
1174  */
1175 void CtdlFreeMessage(struct CtdlMessage *msg)
1176 {
1177         int i;
1178
1179         if (is_valid_message(msg) == 0)
1180         {
1181                 if (msg != NULL) free (msg);
1182                 return;
1183         }
1184
1185         for (i = 0; i < 256; ++i)
1186                 if (msg->cm_fields[i] != NULL) {
1187                         free(msg->cm_fields[i]);
1188                 }
1189
1190         msg->cm_magic = 0;      /* just in case */
1191         free(msg);
1192 }
1193
1194
1195 /*
1196  * Pre callback function for multipart/alternative
1197  *
1198  * NOTE: this differs from the standard behavior for a reason.  Normally when
1199  *       displaying multipart/alternative you want to show the _last_ usable
1200  *       format in the message.  Here we show the _first_ one, because it's
1201  *       usually text/plain.  Since this set of functions is designed for text
1202  *       output to non-MIME-aware clients, this is the desired behavior.
1203  *
1204  */
1205 void fixed_output_pre(char *name, char *filename, char *partnum, char *disp,
1206                 void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1207                 char *cbid, void *cbuserdata)
1208 {
1209         struct ma_info *ma;
1210
1211         ma = (struct ma_info *)cbuserdata;
1212         CtdlLogPrintf(CTDL_DEBUG, "fixed_output_pre() type=<%s>\n", cbtype);
1213         if (!strcasecmp(cbtype, "multipart/alternative")) {
1214                 ++ma->is_ma;
1215                 ma->did_print = 0;
1216         }
1217         if (!strcasecmp(cbtype, "message/rfc822")) {
1218                 ++ma->freeze;
1219         }
1220 }
1221
1222 /*
1223  * Post callback function for multipart/alternative
1224  */
1225 void fixed_output_post(char *name, char *filename, char *partnum, char *disp,
1226                 void *content, char *cbtype, char *cbcharset, size_t length,
1227                 char *encoding, char *cbid, void *cbuserdata)
1228 {
1229         struct ma_info *ma;
1230
1231         ma = (struct ma_info *)cbuserdata;
1232         CtdlLogPrintf(CTDL_DEBUG, "fixed_output_post() type=<%s>\n", cbtype);
1233         if (!strcasecmp(cbtype, "multipart/alternative")) {
1234                 --ma->is_ma;
1235                 ma->did_print = 0;
1236         }
1237         if (!strcasecmp(cbtype, "message/rfc822")) {
1238                 --ma->freeze;
1239         }
1240 }
1241
1242 /*
1243  * Inline callback function for mime parser that wants to display text
1244  */
1245 void fixed_output(char *name, char *filename, char *partnum, char *disp,
1246                 void *content, char *cbtype, char *cbcharset, size_t length,
1247                 char *encoding, char *cbid, void *cbuserdata)
1248 {
1249         char *ptr;
1250         char *wptr;
1251         size_t wlen;
1252         struct ma_info *ma;
1253
1254         ma = (struct ma_info *)cbuserdata;
1255
1256         CtdlLogPrintf(CTDL_DEBUG,
1257                 "fixed_output() part %s: %s (%s) (%ld bytes)\n",
1258                 partnum, filename, cbtype, (long)length);
1259
1260         /*
1261          * If we're in the middle of a multipart/alternative scope and
1262          * we've already printed another section, skip this one.
1263          */
1264         if ( (ma->is_ma) && (ma->did_print) ) {
1265                 CtdlLogPrintf(CTDL_DEBUG, "Skipping part %s (%s)\n", partnum, cbtype);
1266                 return;
1267         }
1268         ma->did_print = 1;
1269
1270         if ( (!strcasecmp(cbtype, "text/plain"))
1271            || (IsEmptyStr(cbtype)) ) {
1272                 wptr = content;
1273                 if (length > 0) {
1274                         client_write(wptr, length);
1275                         if (wptr[length-1] != '\n') {
1276                                 cprintf("\n");
1277                         }
1278                 }
1279                 return;
1280         }
1281
1282         if (!strcasecmp(cbtype, "text/html")) {
1283                 ptr = html_to_ascii(content, length, 80, 0);
1284                 wlen = strlen(ptr);
1285                 client_write(ptr, wlen);
1286                 if (ptr[wlen-1] != '\n') {
1287                         cprintf("\n");
1288                 }
1289                 free(ptr);
1290                 return;
1291         }
1292
1293         if (ma->use_fo_hooks) {
1294                 if (PerformFixedOutputHooks(cbtype, content, length)) {
1295                 /* above function returns nonzero if it handled the part */
1296                         return;
1297                 }
1298         }
1299
1300         if (strncasecmp(cbtype, "multipart/", 10)) {
1301                 cprintf("Part %s: %s (%s) (%ld bytes)\r\n",
1302                         partnum, filename, cbtype, (long)length);
1303                 return;
1304         }
1305 }
1306
1307 /*
1308  * The client is elegant and sophisticated and wants to be choosy about
1309  * MIME content types, so figure out which multipart/alternative part
1310  * we're going to send.
1311  *
1312  * We use a system of weights.  When we find a part that matches one of the
1313  * MIME types we've declared as preferential, we can store it in ma->chosen_part
1314  * and then set ma->chosen_pref to that MIME type's position in our preference
1315  * list.  If we then hit another match, we only replace the first match if
1316  * the preference value is lower.
1317  */
1318 void choose_preferred(char *name, char *filename, char *partnum, char *disp,
1319                 void *content, char *cbtype, char *cbcharset, size_t length,
1320                 char *encoding, char *cbid, void *cbuserdata)
1321 {
1322         char buf[1024];
1323         int i;
1324         struct ma_info *ma;
1325
1326         ma = (struct ma_info *)cbuserdata;
1327
1328         // NOTE: REMOVING THIS CONDITIONAL FIXES BUG 220
1329         //       http://bugzilla.citadel.org/show_bug.cgi?id=220
1330         // I don't know if there are any side effects!  Please TEST TEST TEST
1331         //if (ma->is_ma > 0) {
1332
1333         for (i=0; i<num_tokens(CC->preferred_formats, '|'); ++i) {
1334                 extract_token(buf, CC->preferred_formats, i, '|', sizeof buf);
1335                 if ( (!strcasecmp(buf, cbtype)) && (!ma->freeze) ) {
1336                         if (i < ma->chosen_pref) {
1337                                 CtdlLogPrintf(CTDL_DEBUG, "Setting chosen part: <%s>\n", partnum);
1338                                 safestrncpy(ma->chosen_part, partnum, sizeof ma->chosen_part);
1339                                 ma->chosen_pref = i;
1340                         }
1341                 }
1342         }
1343 }
1344
1345 /*
1346  * Now that we've chosen our preferred part, output it.
1347  */
1348 void output_preferred(char *name, char *filename, char *partnum, char *disp,
1349                 void *content, char *cbtype, char *cbcharset, size_t length,
1350                 char *encoding, char *cbid, void *cbuserdata)
1351 {
1352         int i;
1353         char buf[128];
1354         int add_newline = 0;
1355         char *text_content;
1356         struct ma_info *ma;
1357
1358         ma = (struct ma_info *)cbuserdata;
1359
1360         /* This is not the MIME part you're looking for... */
1361         if (strcasecmp(partnum, ma->chosen_part)) return;
1362
1363         /* If the content-type of this part is in our preferred formats
1364          * list, we can simply output it verbatim.
1365          */
1366         for (i=0; i<num_tokens(CC->preferred_formats, '|'); ++i) {
1367                 extract_token(buf, CC->preferred_formats, i, '|', sizeof buf);
1368                 if (!strcasecmp(buf, cbtype)) {
1369                         /* Yeah!  Go!  W00t!! */
1370
1371                         text_content = (char *)content;
1372                         if (text_content[length-1] != '\n') {
1373                                 ++add_newline;
1374                         }
1375                         cprintf("Content-type: %s", cbtype);
1376                         if (!IsEmptyStr(cbcharset)) {
1377                                 cprintf("; charset=%s", cbcharset);
1378                         }
1379                         cprintf("\nContent-length: %d\n",
1380                                 (int)(length + add_newline) );
1381                         if (!IsEmptyStr(encoding)) {
1382                                 cprintf("Content-transfer-encoding: %s\n", encoding);
1383                         }
1384                         else {
1385                                 cprintf("Content-transfer-encoding: 7bit\n");
1386                         }
1387                         cprintf("X-Citadel-MSG4-Partnum: %s\n", partnum);
1388                         cprintf("\n");
1389                         client_write(content, length);
1390                         if (add_newline) cprintf("\n");
1391                         return;
1392                 }
1393         }
1394
1395         /* No translations required or possible: output as text/plain */
1396         cprintf("Content-type: text/plain\n\n");
1397         fixed_output(name, filename, partnum, disp, content, cbtype, cbcharset,
1398                         length, encoding, cbid, cbuserdata);
1399 }
1400
1401
1402 struct encapmsg {
1403         char desired_section[64];
1404         char *msg;
1405         size_t msglen;
1406 };
1407
1408
1409 /*
1410  * Callback function for
1411  */
1412 void extract_encapsulated_message(char *name, char *filename, char *partnum, char *disp,
1413                    void *content, char *cbtype, char *cbcharset, size_t length,
1414                    char *encoding, char *cbid, void *cbuserdata)
1415 {
1416         struct encapmsg *encap;
1417
1418         encap = (struct encapmsg *)cbuserdata;
1419
1420         /* Only proceed if this is the desired section... */
1421         if (!strcasecmp(encap->desired_section, partnum)) {
1422                 encap->msglen = length;
1423                 encap->msg = malloc(length + 2);
1424                 memcpy(encap->msg, content, length);
1425                 return;
1426         }
1427
1428 }
1429
1430
1431
1432
1433 /*
1434  * Get a message off disk.  (returns om_* values found in msgbase.h)
1435  *
1436  */
1437 int CtdlOutputMsg(long msg_num,         /* message number (local) to fetch */
1438                   int mode,             /* how would you like that message? */
1439                   int headers_only,     /* eschew the message body? */
1440                   int do_proto,         /* do Citadel protocol responses? */
1441                   int crlf,             /* Use CRLF newlines instead of LF? */
1442                   char *section,        /* NULL or a message/rfc822 section */
1443                   int flags             /* should the bessage be exported clean? */
1444 ) {
1445         struct CtdlMessage *TheMessage = NULL;
1446         int retcode = om_no_such_msg;
1447         struct encapmsg encap;
1448
1449         CtdlLogPrintf(CTDL_DEBUG, "CtdlOutputMsg() msgnum=%ld, mode=%d, section=%s\n",
1450                 msg_num, mode,
1451                 (section ? section : "<>")
1452         );
1453
1454         if ((!(CC->logged_in)) && (!(CC->internal_pgm))) {
1455                 if (do_proto) cprintf("%d Not logged in.\n",
1456                         ERROR + NOT_LOGGED_IN);
1457                 return(om_not_logged_in);
1458         }
1459
1460         /* FIXME: check message id against msglist for this room */
1461
1462         /*
1463          * Fetch the message from disk.  If we're in HEADERS_FAST mode,
1464          * request that we don't even bother loading the body into memory.
1465          */
1466         if (headers_only == HEADERS_FAST) {
1467                 TheMessage = CtdlFetchMessage(msg_num, 0);
1468         }
1469         else {
1470                 TheMessage = CtdlFetchMessage(msg_num, 1);
1471         }
1472
1473         if (TheMessage == NULL) {
1474                 if (do_proto) cprintf("%d Can't locate msg %ld on disk\n",
1475                         ERROR + MESSAGE_NOT_FOUND, msg_num);
1476                 return(om_no_such_msg);
1477         }
1478
1479         /* Here is the weird form of this command, to process only an
1480          * encapsulated message/rfc822 section.
1481          */
1482         if (section) if (!IsEmptyStr(section)) if (strcmp(section, "0")) {
1483                 memset(&encap, 0, sizeof encap);
1484                 safestrncpy(encap.desired_section, section, sizeof encap.desired_section);
1485                 mime_parser(TheMessage->cm_fields['M'],
1486                         NULL,
1487                         *extract_encapsulated_message,
1488                         NULL, NULL, (void *)&encap, 0
1489                 );
1490                 CtdlFreeMessage(TheMessage);
1491                 TheMessage = NULL;
1492
1493                 if (encap.msg) {
1494                         encap.msg[encap.msglen] = 0;
1495                         TheMessage = convert_internet_message(encap.msg);
1496                         encap.msg = NULL;       /* no free() here, TheMessage owns it now */
1497
1498                         /* Now we let it fall through to the bottom of this
1499                          * function, because TheMessage now contains the
1500                          * encapsulated message instead of the top-level
1501                          * message.  Isn't that neat?
1502                          */
1503
1504                 }
1505                 else {
1506                         if (do_proto) cprintf("%d msg %ld has no part %s\n",
1507                                 ERROR + MESSAGE_NOT_FOUND, msg_num, section);
1508                         retcode = om_no_such_msg;
1509                 }
1510
1511         }
1512
1513         /* Ok, output the message now */
1514         retcode = CtdlOutputPreLoadedMsg(TheMessage, mode, headers_only, do_proto, crlf, flags);
1515         CtdlFreeMessage(TheMessage);
1516
1517         return(retcode);
1518 }
1519
1520
1521 char *qp_encode_email_addrs(char *source)
1522 {
1523         char user[256], node[256], name[256];
1524         const char headerStr[] = "=?UTF-8?Q?";
1525         char *Encoded;
1526         char *EncodedName;
1527         char *nPtr;
1528         int need_to_encode = 0;
1529         long SourceLen;
1530         long EncodedMaxLen;
1531         long nColons = 0;
1532         long *AddrPtr;
1533         long *AddrUtf8;
1534         long nAddrPtrMax = 50;
1535         long nmax;
1536         int InQuotes = 0;
1537         int i, n;
1538
1539         if (source == NULL) return source;
1540         if (IsEmptyStr(source)) return source;
1541
1542         AddrPtr = malloc (sizeof (long) * nAddrPtrMax);
1543         AddrUtf8 = malloc (sizeof (long) * nAddrPtrMax);
1544         memset(AddrUtf8, 0, sizeof (long) * nAddrPtrMax);
1545         *AddrPtr = 0;
1546         i = 0;
1547         while (!IsEmptyStr (&source[i])) {
1548                 if (nColons >= nAddrPtrMax){
1549                         long *ptr;
1550
1551                         ptr = (long *) malloc(sizeof (long) * nAddrPtrMax * 2);
1552                         memcpy (ptr, AddrPtr, sizeof (long) * nAddrPtrMax);
1553                         free (AddrPtr), AddrPtr = ptr;
1554
1555                         ptr = (long *) malloc(sizeof (long) * nAddrPtrMax * 2);
1556                         memset(&ptr[nAddrPtrMax], 0,
1557                                sizeof (long) * nAddrPtrMax);
1558
1559                         memcpy (ptr, AddrUtf8, sizeof (long) * nAddrPtrMax);
1560                         free (AddrUtf8), AddrUtf8 = ptr;
1561                         nAddrPtrMax *= 2;
1562                 }
1563                 if (((unsigned char) source[i] < 32) ||
1564                     ((unsigned char) source[i] > 126)) {
1565                         need_to_encode = 1;
1566                         AddrUtf8[nColons] = 1;
1567                 }
1568                 if (source[i] == '"')
1569                         InQuotes = !InQuotes;
1570                 if (!InQuotes && source[i] == ',') {
1571                         AddrPtr[nColons] = i;
1572                         nColons++;
1573                 }
1574                 i++;
1575         }
1576         if (need_to_encode == 0) {
1577                 free(AddrPtr);
1578                 free(AddrUtf8);
1579                 return source;
1580         }
1581
1582         SourceLen = i;
1583         EncodedMaxLen = nColons * (sizeof(headerStr) + 3) + SourceLen * 3;
1584         Encoded = (char*) malloc (EncodedMaxLen);
1585
1586         for (i = 0; i < nColons; i++)
1587                 source[AddrPtr[i]++] = '\0';
1588
1589         nPtr = Encoded;
1590         *nPtr = '\0';
1591         for (i = 0; i < nColons && nPtr != NULL; i++) {
1592                 nmax = EncodedMaxLen - (nPtr - Encoded);
1593                 if (AddrUtf8[i]) {
1594                         process_rfc822_addr(&source[AddrPtr[i]],
1595                                             user,
1596                                             node,
1597                                             name);
1598                         /* TODO: libIDN here ! */
1599                         if (IsEmptyStr(name)) {
1600                                 n = snprintf(nPtr, nmax,
1601                                              (i==0)?"%s@%s" : ",%s@%s",
1602                                              user, node);
1603                         }
1604                         else {
1605                                 EncodedName = rfc2047encode(name, strlen(name));
1606                                 n = snprintf(nPtr, nmax,
1607                                              (i==0)?"%s <%s@%s>" : ",%s <%s@%s>",
1608                                              EncodedName, user, node);
1609                                 free(EncodedName);
1610                         }
1611                 }
1612                 else {
1613                         n = snprintf(nPtr, nmax,
1614                                      (i==0)?"%s" : ",%s",
1615                                      &source[AddrPtr[i]]);
1616                 }
1617                 if (n > 0 )
1618                         nPtr += n;
1619                 else {
1620                         char *ptr, *nnPtr;
1621                         ptr = (char*) malloc(EncodedMaxLen * 2);
1622                         memcpy(ptr, Encoded, EncodedMaxLen);
1623                         nnPtr = ptr + (nPtr - Encoded), nPtr = nnPtr;
1624                         free(Encoded), Encoded = ptr;
1625                         EncodedMaxLen *= 2;
1626                         i--; /* do it once more with properly lengthened buffer */
1627                 }
1628         }
1629         for (i = 0; i < nColons; i++)
1630                 source[--AddrPtr[i]] = ',';
1631         free(AddrUtf8);
1632         free(AddrPtr);
1633         return Encoded;
1634 }
1635
1636
1637 /* If the last item in a list of recipients was truncated to a partial address,
1638  * remove it completely in order to avoid choking libSieve
1639  */
1640 void sanitize_truncated_recipient(char *str)
1641 {
1642         if (!str) return;
1643         if (num_tokens(str, ',') < 2) return;
1644
1645         int len = strlen(str);
1646         if (len < 900) return;
1647         if (len > 998) str[998] = 0;
1648
1649         char *cptr = strrchr(str, ',');
1650         if (!cptr) return;
1651
1652         char *lptr = strchr(cptr, '<');
1653         char *rptr = strchr(cptr, '>');
1654
1655         if ( (lptr) && (rptr) && (rptr > lptr) ) return;
1656
1657         *cptr = 0;
1658 }
1659
1660
1661
1662 /*
1663  * Get a message off disk.  (returns om_* values found in msgbase.h)
1664  */
1665 int CtdlOutputPreLoadedMsg(
1666                 struct CtdlMessage *TheMessage,
1667                 int mode,               /* how would you like that message? */
1668                 int headers_only,       /* eschew the message body? */
1669                 int do_proto,           /* do Citadel protocol responses? */
1670                 int crlf,               /* Use CRLF newlines instead of LF? */
1671                 int flags               /* should the bessage be exported clean? */
1672 ) {
1673         int i, j, k;
1674         char buf[SIZ];
1675         cit_uint8_t ch, prev_ch;
1676         char allkeys[30];
1677         char display_name[256];
1678         char *mptr, *mpptr;
1679         char *nl;       /* newline string */
1680         int suppress_f = 0;
1681         int subject_found = 0;
1682         struct ma_info ma;
1683
1684         /* Buffers needed for RFC822 translation.  These are all filled
1685          * using functions that are bounds-checked, and therefore we can
1686          * make them substantially smaller than SIZ.
1687          */
1688         char suser[100];
1689         char luser[100];
1690         char fuser[100];
1691         char snode[100];
1692         char mid[100];
1693         char datestamp[100];
1694
1695         CtdlLogPrintf(CTDL_DEBUG, "CtdlOutputPreLoadedMsg(TheMessage=%s, %d, %d, %d, %d\n",
1696                 ((TheMessage == NULL) ? "NULL" : "not null"),
1697                 mode, headers_only, do_proto, crlf);
1698
1699         strcpy(mid, "unknown");
1700         nl = (crlf ? "\r\n" : "\n");
1701
1702         if (!is_valid_message(TheMessage)) {
1703                 CtdlLogPrintf(CTDL_ERR,
1704                         "ERROR: invalid preloaded message for output\n");
1705                 cit_backtrace ();
1706                 return(om_no_such_msg);
1707         }
1708
1709         /* Are we downloading a MIME component? */
1710         if (mode == MT_DOWNLOAD) {
1711                 if (TheMessage->cm_format_type != FMT_RFC822) {
1712                         if (do_proto)
1713                                 cprintf("%d This is not a MIME message.\n",
1714                                 ERROR + ILLEGAL_VALUE);
1715                 } else if (CC->download_fp != NULL) {
1716                         if (do_proto) cprintf(
1717                                 "%d You already have a download open.\n",
1718                                 ERROR + RESOURCE_BUSY);
1719                 } else {
1720                         /* Parse the message text component */
1721                         mptr = TheMessage->cm_fields['M'];
1722                         mime_parser(mptr, NULL, *mime_download, NULL, NULL, NULL, 0);
1723                         /* If there's no file open by this time, the requested
1724                          * section wasn't found, so print an error
1725                          */
1726                         if (CC->download_fp == NULL) {
1727                                 if (do_proto) cprintf(
1728                                         "%d Section %s not found.\n",
1729                                         ERROR + FILE_NOT_FOUND,
1730                                         CC->download_desired_section);
1731                         }
1732                 }
1733                 return((CC->download_fp != NULL) ? om_ok : om_mime_error);
1734         }
1735
1736         /* MT_SPEW_SECTION is like MT_DOWNLOAD except it outputs the whole MIME part
1737          * in a single server operation instead of opening a download file.
1738          */
1739         if (mode == MT_SPEW_SECTION) {
1740                 if (TheMessage->cm_format_type != FMT_RFC822) {
1741                         if (do_proto)
1742                                 cprintf("%d This is not a MIME message.\n",
1743                                 ERROR + ILLEGAL_VALUE);
1744                 } else {
1745                         /* Parse the message text component */
1746                         int found_it = 0;
1747
1748                         mptr = TheMessage->cm_fields['M'];
1749                         mime_parser(mptr, NULL, *mime_spew_section, NULL, NULL, (void *)&found_it, 0);
1750                         /* If section wasn't found, print an error
1751                          */
1752                         if (!found_it) {
1753                                 if (do_proto) cprintf(
1754                                         "%d Section %s not found.\n",
1755                                         ERROR + FILE_NOT_FOUND,
1756                                         CC->download_desired_section);
1757                         }
1758                 }
1759                 return((CC->download_fp != NULL) ? om_ok : om_mime_error);
1760         }
1761
1762         /* now for the user-mode message reading loops */
1763         if (do_proto) cprintf("%d msg:\n", LISTING_FOLLOWS);
1764
1765         /* Does the caller want to skip the headers? */
1766         if (headers_only == HEADERS_NONE) goto START_TEXT;
1767
1768         /* Tell the client which format type we're using. */
1769         if ( (mode == MT_CITADEL) && (do_proto) ) {
1770                 cprintf("type=%d\n", TheMessage->cm_format_type);
1771         }
1772
1773         /* nhdr=yes means that we're only displaying headers, no body */
1774         if ( (TheMessage->cm_anon_type == MES_ANONONLY)
1775            && ((mode == MT_CITADEL) || (mode == MT_MIME))
1776            && (do_proto)
1777            ) {
1778                 cprintf("nhdr=yes\n");
1779         }
1780
1781         /* begin header processing loop for Citadel message format */
1782
1783         if ((mode == MT_CITADEL) || (mode == MT_MIME)) {
1784
1785                 safestrncpy(display_name, "<unknown>", sizeof display_name);
1786                 if (TheMessage->cm_fields['A']) {
1787                         strcpy(buf, TheMessage->cm_fields['A']);
1788                         if (TheMessage->cm_anon_type == MES_ANONONLY) {
1789                                 safestrncpy(display_name, "****", sizeof display_name);
1790                         }
1791                         else if (TheMessage->cm_anon_type == MES_ANONOPT) {
1792                                 safestrncpy(display_name, "anonymous", sizeof display_name);
1793                         }
1794                         else {
1795                                 safestrncpy(display_name, buf, sizeof display_name);
1796                         }
1797                         if ((is_room_aide())
1798                             && ((TheMessage->cm_anon_type == MES_ANONONLY)
1799                              || (TheMessage->cm_anon_type == MES_ANONOPT))) {
1800                                 size_t tmp = strlen(display_name);
1801                                 snprintf(&display_name[tmp],
1802                                          sizeof display_name - tmp,
1803                                          " [%s]", buf);
1804                         }
1805                 }
1806
1807                 /* Don't show Internet address for users on the
1808                  * local Citadel network.
1809                  */
1810                 suppress_f = 0;
1811                 if (TheMessage->cm_fields['N'] != NULL)
1812                    if (!IsEmptyStr(TheMessage->cm_fields['N']))
1813                       if (haschar(TheMessage->cm_fields['N'], '.') == 0) {
1814                         suppress_f = 1;
1815                 }
1816
1817                 /* Now spew the header fields in the order we like them. */
1818                 safestrncpy(allkeys, FORDER, sizeof allkeys);
1819                 for (i=0; i<strlen(allkeys); ++i) {
1820                         k = (int) allkeys[i];
1821                         if (k != 'M') {
1822                                 if ( (TheMessage->cm_fields[k] != NULL)
1823                                    && (msgkeys[k] != NULL) ) {
1824                                         if ((k == 'V') || (k == 'R') || (k == 'Y')) {
1825                                                 sanitize_truncated_recipient(TheMessage->cm_fields[k]);
1826                                         }
1827                                         if (k == 'A') {
1828                                                 if (do_proto) cprintf("%s=%s\n",
1829                                                         msgkeys[k],
1830                                                         display_name);
1831                                         }
1832                                         else if ((k == 'F') && (suppress_f)) {
1833                                                 /* do nothing */
1834                                         }
1835                                         /* Masquerade display name if needed */
1836                                         else {
1837                                                 if (do_proto) cprintf("%s=%s\n",
1838                                                         msgkeys[k],
1839                                                         TheMessage->cm_fields[k]
1840                                         );
1841                                         }
1842                                 }
1843                         }
1844                 }
1845
1846         }
1847
1848         /* begin header processing loop for RFC822 transfer format */
1849
1850         strcpy(suser, "");
1851         strcpy(luser, "");
1852         strcpy(fuser, "");
1853         strcpy(snode, NODENAME);
1854         if (mode == MT_RFC822) {
1855                 for (i = 0; i < 256; ++i) {
1856                         if (TheMessage->cm_fields[i]) {
1857                                 mptr = mpptr = TheMessage->cm_fields[i];
1858
1859                                 if (i == 'A') {
1860                                         safestrncpy(luser, mptr, sizeof luser);
1861                                         safestrncpy(suser, mptr, sizeof suser);
1862                                 }
1863                                 else if (i == 'Y') {
1864                                         if ((flags & QP_EADDR) != 0) {
1865                                                 mptr = qp_encode_email_addrs(mptr);
1866                                         }
1867                                         sanitize_truncated_recipient(mptr);
1868                                         cprintf("CC: %s%s", mptr, nl);
1869                                 }
1870                                 else if (i == 'P') {
1871                                         cprintf("Return-Path: %s%s", mptr, nl);
1872                                 }
1873                                 else if (i == 'L') {
1874                                         cprintf("List-ID: %s%s", mptr, nl);
1875                                 }
1876                                 else if (i == 'V') {
1877                                         if ((flags & QP_EADDR) != 0)
1878                                                 mptr = qp_encode_email_addrs(mptr);
1879                                         cprintf("Envelope-To: %s%s", mptr, nl);
1880                                 }
1881                                 else if (i == 'U') {
1882                                         cprintf("Subject: %s%s", mptr, nl);
1883                                         subject_found = 1;
1884                                 }
1885                                 else if (i == 'I')
1886                                         safestrncpy(mid, mptr, sizeof mid);
1887                                 else if (i == 'F')
1888                                         safestrncpy(fuser, mptr, sizeof fuser);
1889                                 /* else if (i == 'O')
1890                                         cprintf("X-Citadel-Room: %s%s",
1891                                                 mptr, nl); */
1892                                 else if (i == 'N')
1893                                         safestrncpy(snode, mptr, sizeof snode);
1894                                 else if (i == 'R')
1895                                 {
1896                                         if (haschar(mptr, '@') == 0)
1897                                         {
1898                                                 sanitize_truncated_recipient(mptr);
1899                                                 cprintf("To: %s@%s", mptr, config.c_fqdn);
1900                                                 cprintf("%s", nl);
1901                                         }
1902                                         else
1903                                         {
1904                                                 if ((flags & QP_EADDR) != 0) {
1905                                                         mptr = qp_encode_email_addrs(mptr);
1906                                                 }
1907                                                 sanitize_truncated_recipient(mptr);
1908                                                 cprintf("To: %s", mptr);
1909                                                 cprintf("%s", nl);
1910                                         }
1911                                 }
1912                                 else if (i == 'T') {
1913                                         datestring(datestamp, sizeof datestamp,
1914                                                 atol(mptr), DATESTRING_RFC822);
1915                                         cprintf("Date: %s%s", datestamp, nl);
1916                                 }
1917                                 else if (i == 'W') {
1918                                         cprintf("References: ");
1919                                         k = num_tokens(mptr, '|');
1920                                         for (j=0; j<k; ++j) {
1921                                                 extract_token(buf, mptr, j, '|', sizeof buf);
1922                                                 cprintf("<%s>", buf);
1923                                                 if (j == (k-1)) {
1924                                                         cprintf("%s", nl);
1925                                                 }
1926                                                 else {
1927                                                         cprintf(" ");
1928                                                 }
1929                                         }
1930                                 }
1931                                 if (mptr != mpptr)
1932                                         free (mptr);
1933                         }
1934                 }
1935                 if (subject_found == 0) {
1936                         cprintf("Subject: (no subject)%s", nl);
1937                 }
1938         }
1939
1940         for (i=0; !IsEmptyStr(&suser[i]); ++i) {
1941                 suser[i] = tolower(suser[i]);
1942                 if (!isalnum(suser[i])) suser[i]='_';
1943         }
1944
1945         if (mode == MT_RFC822) {
1946                 if (!strcasecmp(snode, NODENAME)) {
1947                         safestrncpy(snode, FQDN, sizeof snode);
1948                 }
1949
1950                 /* Construct a fun message id */
1951                 cprintf("Message-ID: <%s", mid);/// todo: this possibly breaks threadding mails.
1952                 if (strchr(mid, '@')==NULL) {
1953                         cprintf("@%s", snode);
1954                 }
1955                 cprintf(">%s", nl);
1956
1957                 if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONONLY)) {
1958                         cprintf("From: \"----\" <x@x.org>%s", nl);
1959                 }
1960                 else if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONOPT)) {
1961                         cprintf("From: \"anonymous\" <x@x.org>%s", nl);
1962                 }
1963                 else if (!IsEmptyStr(fuser)) {
1964                         cprintf("From: \"%s\" <%s>%s", luser, fuser, nl);
1965                 }
1966                 else {
1967                         cprintf("From: \"%s\" <%s@%s>%s", luser, suser, snode, nl);
1968                 }
1969
1970                 /* Blank line signifying RFC822 end-of-headers */
1971                 if (TheMessage->cm_format_type != FMT_RFC822) {
1972                         cprintf("%s", nl);
1973                 }
1974         }
1975
1976         /* end header processing loop ... at this point, we're in the text */
1977 START_TEXT:
1978         if (headers_only == HEADERS_FAST) goto DONE;
1979         mptr = TheMessage->cm_fields['M'];
1980
1981         /* Tell the client about the MIME parts in this message */
1982         if (TheMessage->cm_format_type == FMT_RFC822) {
1983                 if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
1984                         memset(&ma, 0, sizeof(struct ma_info));
1985                         mime_parser(mptr, NULL,
1986                                 (do_proto ? *list_this_part : NULL),
1987                                 (do_proto ? *list_this_pref : NULL),
1988                                 (do_proto ? *list_this_suff : NULL),
1989                                 (void *)&ma, 0);
1990                 }
1991                 else if (mode == MT_RFC822) {   /* unparsed RFC822 dump */
1992                         char *start_of_text = NULL;
1993                         start_of_text = strstr(mptr, "\n\r\n");
1994                         if (start_of_text == NULL) start_of_text = strstr(mptr, "\n\n");
1995                         if (start_of_text == NULL) start_of_text = mptr;
1996                         ++start_of_text;
1997                         start_of_text = strstr(start_of_text, "\n");
1998                         ++start_of_text;
1999
2000                         char outbuf[1024];
2001                         int outlen = 0;
2002                         int nllen = strlen(nl);
2003                         prev_ch = 0;
2004                         while (ch=*mptr, ch!=0) {
2005                                 if (ch==13) {
2006                                         /* do nothing */
2007                                 }
2008                                 else {
2009                                         if (
2010                                                 ((headers_only == HEADERS_NONE) && (mptr >= start_of_text))
2011                                            ||   ((headers_only == HEADERS_ONLY) && (mptr < start_of_text))
2012                                            ||   ((headers_only != HEADERS_NONE) && (headers_only != HEADERS_ONLY))
2013                                         ) {
2014                                                 if (ch == 10) {
2015                                                         sprintf(&outbuf[outlen], "%s", nl);
2016                                                         outlen += nllen;
2017                                                 }
2018                                                 else {
2019                                                         outbuf[outlen++] = ch;
2020                                                 }
2021                                         }
2022                                 }
2023                                 if (flags & ESC_DOT)
2024                                 {
2025                                         if ((prev_ch == 10) && (ch == '.') && ((*(mptr+1) == 13) || (*(mptr+1) == 10)))
2026                                         {
2027                                                 outbuf[outlen++] = '.';
2028                                         }
2029                                 }
2030                                 prev_ch = ch;
2031                                 ++mptr;
2032                                 if (outlen > 1000) {
2033                                         client_write(outbuf, outlen);
2034                                         outlen = 0;
2035                                 }
2036                         }
2037                         if (outlen > 0) {
2038                                 client_write(outbuf, outlen);
2039                                 outlen = 0;
2040                         }
2041
2042                         goto DONE;
2043                 }
2044         }
2045
2046         if (headers_only == HEADERS_ONLY) {
2047                 goto DONE;
2048         }
2049
2050         /* signify start of msg text */
2051         if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
2052                 if (do_proto) cprintf("text\n");
2053         }
2054
2055         /* If the format type on disk is 1 (fixed-format), then we want
2056          * everything to be output completely literally ... regardless of
2057          * what message transfer format is in use.
2058          */
2059         if (TheMessage->cm_format_type == FMT_FIXED) {
2060                 int buflen;
2061                 if (mode == MT_MIME) {
2062                         cprintf("Content-type: text/plain\n\n");
2063                 }
2064                 *buf = '\0';
2065                 buflen = 0;
2066                 while (ch = *mptr++, ch > 0) {
2067                         if (ch == 13)
2068                                 ch = 10;
2069                         if ((ch == 10) || (buflen > 250)) {
2070                                 buf[buflen] = '\0';
2071                                 cprintf("%s%s", buf, nl);
2072                                 *buf = '\0';
2073                                 buflen = 0;
2074                         } else {
2075                                 buf[buflen] = ch;
2076                                 buflen++;
2077                         }
2078                 }
2079                 buf[buflen] = '\0';
2080                 if (!IsEmptyStr(buf))
2081                         cprintf("%s%s", buf, nl);
2082         }
2083
2084         /* If the message on disk is format 0 (Citadel vari-format), we
2085          * output using the formatter at 80 columns.  This is the final output
2086          * form if the transfer format is RFC822, but if the transfer format
2087          * is Citadel proprietary, it'll still work, because the indentation
2088          * for new paragraphs is correct and the client will reformat the
2089          * message to the reader's screen width.
2090          */
2091         if (TheMessage->cm_format_type == FMT_CITADEL) {
2092                 if (mode == MT_MIME) {
2093                         cprintf("Content-type: text/x-citadel-variformat\n\n");
2094                 }
2095                 memfmout(mptr, 0, nl);
2096         }
2097
2098         /* If the message on disk is format 4 (MIME), we've gotta hand it
2099          * off to the MIME parser.  The client has already been told that
2100          * this message is format 1 (fixed format), so the callback function
2101          * we use will display those parts as-is.
2102          */
2103         if (TheMessage->cm_format_type == FMT_RFC822) {
2104                 memset(&ma, 0, sizeof(struct ma_info));
2105
2106                 if (mode == MT_MIME) {
2107                         ma.use_fo_hooks = 0;
2108                         strcpy(ma.chosen_part, "1");
2109                         ma.chosen_pref = 9999;
2110                         mime_parser(mptr, NULL,
2111                                 *choose_preferred, *fixed_output_pre,
2112                                 *fixed_output_post, (void *)&ma, 0);
2113                         mime_parser(mptr, NULL,
2114                                 *output_preferred, NULL, NULL, (void *)&ma, CC->msg4_dont_decode);
2115                 }
2116                 else {
2117                         ma.use_fo_hooks = 1;
2118                         mime_parser(mptr, NULL,
2119                                 *fixed_output, *fixed_output_pre,
2120                                 *fixed_output_post, (void *)&ma, 0);
2121                 }
2122
2123         }
2124
2125 DONE:   /* now we're done */
2126         if (do_proto) cprintf("000\n");
2127         return(om_ok);
2128 }
2129
2130
2131
2132 /*
2133  * display a message (mode 0 - Citadel proprietary)
2134  */
2135 void cmd_msg0(char *cmdbuf)
2136 {
2137         long msgid;
2138         int headers_only = HEADERS_ALL;
2139
2140         msgid = extract_long(cmdbuf, 0);
2141         headers_only = extract_int(cmdbuf, 1);
2142
2143         CtdlOutputMsg(msgid, MT_CITADEL, headers_only, 1, 0, NULL, 0);
2144         return;
2145 }
2146
2147
2148 /*
2149  * display a message (mode 2 - RFC822)
2150  */
2151 void cmd_msg2(char *cmdbuf)
2152 {
2153         long msgid;
2154         int headers_only = HEADERS_ALL;
2155
2156         msgid = extract_long(cmdbuf, 0);
2157         headers_only = extract_int(cmdbuf, 1);
2158
2159         CtdlOutputMsg(msgid, MT_RFC822, headers_only, 1, 1, NULL, 0);
2160 }
2161
2162
2163
2164 /*
2165  * display a message (mode 3 - IGnet raw format - internal programs only)
2166  */
2167 void cmd_msg3(char *cmdbuf)
2168 {
2169         long msgnum;
2170         struct CtdlMessage *msg = NULL;
2171         struct ser_ret smr;
2172
2173         if (CC->internal_pgm == 0) {
2174                 cprintf("%d This command is for internal programs only.\n",
2175                         ERROR + HIGHER_ACCESS_REQUIRED);
2176                 return;
2177         }
2178
2179         msgnum = extract_long(cmdbuf, 0);
2180         msg = CtdlFetchMessage(msgnum, 1);
2181         if (msg == NULL) {
2182                 cprintf("%d Message %ld not found.\n",
2183                         ERROR + MESSAGE_NOT_FOUND, msgnum);
2184                 return;
2185         }
2186
2187         serialize_message(&smr, msg);
2188         CtdlFreeMessage(msg);
2189
2190         if (smr.len == 0) {
2191                 cprintf("%d Unable to serialize message\n",
2192                         ERROR + INTERNAL_ERROR);
2193                 return;
2194         }
2195
2196         cprintf("%d %ld\n", BINARY_FOLLOWS, (long)smr.len);
2197         client_write((char *)smr.ser, (int)smr.len);
2198         free(smr.ser);
2199 }
2200
2201
2202
2203 /*
2204  * Display a message using MIME content types
2205  */
2206 void cmd_msg4(char *cmdbuf)
2207 {
2208         long msgid;
2209         char section[64];
2210
2211         msgid = extract_long(cmdbuf, 0);
2212         extract_token(section, cmdbuf, 1, '|', sizeof section);
2213         CtdlOutputMsg(msgid, MT_MIME, 0, 1, 0, (section[0] ? section : NULL) , 0);
2214 }
2215
2216
2217
2218 /*
2219  * Client tells us its preferred message format(s)
2220  */
2221 void cmd_msgp(char *cmdbuf)
2222 {
2223         if (!strcasecmp(cmdbuf, "dont_decode")) {
2224                 CC->msg4_dont_decode = 1;
2225                 cprintf("%d MSG4 will not pre-decode messages.\n", CIT_OK);
2226         }
2227         else {
2228                 safestrncpy(CC->preferred_formats, cmdbuf, sizeof(CC->preferred_formats));
2229                 cprintf("%d Preferred MIME formats have been set.\n", CIT_OK);
2230         }
2231 }
2232
2233
2234 /*
2235  * Open a component of a MIME message as a download file
2236  */
2237 void cmd_opna(char *cmdbuf)
2238 {
2239         long msgid;
2240         char desired_section[128];
2241
2242         msgid = extract_long(cmdbuf, 0);
2243         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2244         safestrncpy(CC->download_desired_section, desired_section,
2245                 sizeof CC->download_desired_section);
2246         CtdlOutputMsg(msgid, MT_DOWNLOAD, 0, 1, 1, NULL, 0);
2247 }
2248
2249
2250 /*
2251  * Open a component of a MIME message and transmit it all at once
2252  */
2253 void cmd_dlat(char *cmdbuf)
2254 {
2255         long msgid;
2256         char desired_section[128];
2257
2258         msgid = extract_long(cmdbuf, 0);
2259         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2260         safestrncpy(CC->download_desired_section, desired_section,
2261                 sizeof CC->download_desired_section);
2262         CtdlOutputMsg(msgid, MT_SPEW_SECTION, 0, 1, 1, NULL, 0);
2263 }
2264
2265
2266 /*
2267  * Save one or more message pointers into a specified room
2268  * (Returns 0 for success, nonzero for failure)
2269  * roomname may be NULL to use the current room
2270  *
2271  * Note that the 'supplied_msg' field may be set to NULL, in which case
2272  * the message will be fetched from disk, by number, if we need to perform
2273  * replication checks.  This adds an additional database read, so if the
2274  * caller already has the message in memory then it should be supplied.  (Obviously
2275  * this mode of operation only works if we're saving a single message.)
2276  */
2277 int CtdlSaveMsgPointersInRoom(char *roomname, long newmsgidlist[], int num_newmsgs,
2278                                 int do_repl_check, struct CtdlMessage *supplied_msg)
2279 {
2280         int i, j, unique;
2281         char hold_rm[ROOMNAMELEN];
2282         struct cdbdata *cdbfr;
2283         int num_msgs;
2284         long *msglist;
2285         long highest_msg = 0L;
2286
2287         long msgid = 0;
2288         struct CtdlMessage *msg = NULL;
2289
2290         long *msgs_to_be_merged = NULL;
2291         int num_msgs_to_be_merged = 0;
2292
2293         CtdlLogPrintf(CTDL_DEBUG,
2294                 "CtdlSaveMsgPointersInRoom(room=%s, num_msgs=%d, repl=%d)\n",
2295                 roomname, num_newmsgs, do_repl_check);
2296
2297         strcpy(hold_rm, CC->room.QRname);
2298
2299         /* Sanity checks */
2300         if (newmsgidlist == NULL) return(ERROR + INTERNAL_ERROR);
2301         if (num_newmsgs < 1) return(ERROR + INTERNAL_ERROR);
2302         if (num_newmsgs > 1) supplied_msg = NULL;
2303
2304         /* Now the regular stuff */
2305         if (lgetroom(&CC->room,
2306            ((roomname != NULL) ? roomname : CC->room.QRname) )
2307            != 0) {
2308                 CtdlLogPrintf(CTDL_ERR, "No such room <%s>\n", roomname);
2309                 return(ERROR + ROOM_NOT_FOUND);
2310         }
2311
2312
2313         msgs_to_be_merged = malloc(sizeof(long) * num_newmsgs);
2314         num_msgs_to_be_merged = 0;
2315
2316
2317         cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
2318         if (cdbfr == NULL) {
2319                 msglist = NULL;
2320                 num_msgs = 0;
2321         } else {
2322                 msglist = (long *) cdbfr->ptr;
2323                 cdbfr->ptr = NULL;      /* CtdlSaveMsgPointerInRoom() now owns this memory */
2324                 num_msgs = cdbfr->len / sizeof(long);
2325                 cdb_free(cdbfr);
2326         }
2327
2328
2329         /* Create a list of msgid's which were supplied by the caller, but do
2330          * not already exist in the target room.  It is absolutely taboo to
2331          * have more than one reference to the same message in a room.
2332          */
2333         for (i=0; i<num_newmsgs; ++i) {
2334                 unique = 1;
2335                 if (num_msgs > 0) for (j=0; j<num_msgs; ++j) {
2336                         if (msglist[j] == newmsgidlist[i]) {
2337                                 unique = 0;
2338                         }
2339                 }
2340                 if (unique) {
2341                         msgs_to_be_merged[num_msgs_to_be_merged++] = newmsgidlist[i];
2342                 }
2343         }
2344
2345         CtdlLogPrintf(9, "%d unique messages to be merged\n", num_msgs_to_be_merged);
2346
2347         /*
2348          * Now merge the new messages
2349          */
2350         msglist = realloc(msglist, (sizeof(long) * (num_msgs + num_msgs_to_be_merged)) );
2351         if (msglist == NULL) {
2352                 CtdlLogPrintf(CTDL_ALERT, "ERROR: can't realloc message list!\n");
2353         }
2354         memcpy(&msglist[num_msgs], msgs_to_be_merged, (sizeof(long) * num_msgs_to_be_merged) );
2355         num_msgs += num_msgs_to_be_merged;
2356
2357         /* Sort the message list, so all the msgid's are in order */
2358         num_msgs = sort_msglist(msglist, num_msgs);
2359
2360         /* Determine the highest message number */
2361         highest_msg = msglist[num_msgs - 1];
2362
2363         /* Write it back to disk. */
2364         cdb_store(CDB_MSGLISTS, &CC->room.QRnumber, (int)sizeof(long),
2365                   msglist, (int)(num_msgs * sizeof(long)));
2366
2367         /* Free up the memory we used. */
2368         free(msglist);
2369
2370         /* Update the highest-message pointer and unlock the room. */
2371         CC->room.QRhighest = highest_msg;
2372         lputroom(&CC->room);
2373
2374         /* Perform replication checks if necessary */
2375         if ( (DoesThisRoomNeedEuidIndexing(&CC->room)) && (do_repl_check) ) {
2376                 CtdlLogPrintf(CTDL_DEBUG, "CtdlSaveMsgPointerInRoom() doing repl checks\n");
2377
2378                 for (i=0; i<num_msgs_to_be_merged; ++i) {
2379                         msgid = msgs_to_be_merged[i];
2380
2381                         if (supplied_msg != NULL) {
2382                                 msg = supplied_msg;
2383                         }
2384                         else {
2385                                 msg = CtdlFetchMessage(msgid, 0);
2386                         }
2387
2388                         if (msg != NULL) {
2389                                 ReplicationChecks(msg);
2390
2391                                 /* If the message has an Exclusive ID, index that... */
2392                                 if (msg->cm_fields['E'] != NULL) {
2393                                         index_message_by_euid(msg->cm_fields['E'], &CC->room, msgid);
2394                                 }
2395
2396                                 /* Free up the memory we may have allocated */
2397                                 if (msg != supplied_msg) {
2398                                         CtdlFreeMessage(msg);
2399                                 }
2400                         }
2401
2402                 }
2403         }
2404
2405         else {
2406                 CtdlLogPrintf(CTDL_DEBUG, "CtdlSaveMsgPointerInRoom() skips repl checks\n");
2407         }
2408
2409         /* Submit this room for processing by hooks */
2410         PerformRoomHooks(&CC->room);
2411
2412         /* Go back to the room we were in before we wandered here... */
2413         getroom(&CC->room, hold_rm);
2414
2415         /* Bump the reference count for all messages which were merged */
2416         for (i=0; i<num_msgs_to_be_merged; ++i) {
2417                 AdjRefCount(msgs_to_be_merged[i], +1);
2418         }
2419
2420         /* Free up memory... */
2421         if (msgs_to_be_merged != NULL) {
2422                 free(msgs_to_be_merged);
2423         }
2424
2425         /* Return success. */
2426         return (0);
2427 }
2428
2429
2430 /*
2431  * This is the same as CtdlSaveMsgPointersInRoom() but it only accepts
2432  * a single message.
2433  */
2434 int CtdlSaveMsgPointerInRoom(char *roomname, long msgid,
2435                         int do_repl_check, struct CtdlMessage *supplied_msg)
2436 {
2437         return CtdlSaveMsgPointersInRoom(roomname, &msgid, 1, do_repl_check, supplied_msg);
2438 }
2439
2440
2441
2442
2443 /*
2444  * Message base operation to save a new message to the message store
2445  * (returns new message number)
2446  *
2447  * This is the back end for CtdlSubmitMsg() and should not be directly
2448  * called by server-side modules.
2449  *
2450  */
2451 long send_message(struct CtdlMessage *msg) {
2452         long newmsgid;
2453         long retval;
2454         char msgidbuf[256];
2455         struct ser_ret smr;
2456         int is_bigmsg = 0;
2457         char *holdM = NULL;
2458
2459         /* Get a new message number */
2460         newmsgid = get_new_message_number();
2461         snprintf(msgidbuf, sizeof msgidbuf, "%010ld@%s", newmsgid, config.c_fqdn);
2462
2463         /* Generate an ID if we don't have one already */
2464         if (msg->cm_fields['I']==NULL) {
2465                 msg->cm_fields['I'] = strdup(msgidbuf);
2466         }
2467
2468         /* If the message is big, set its body aside for storage elsewhere */
2469         if (msg->cm_fields['M'] != NULL) {
2470                 if (strlen(msg->cm_fields['M']) > BIGMSG) {
2471                         is_bigmsg = 1;
2472                         holdM = msg->cm_fields['M'];
2473                         msg->cm_fields['M'] = NULL;
2474                 }
2475         }
2476
2477         /* Serialize our data structure for storage in the database */
2478         serialize_message(&smr, msg);
2479
2480         if (is_bigmsg) {
2481                 msg->cm_fields['M'] = holdM;
2482         }
2483
2484         if (smr.len == 0) {
2485                 cprintf("%d Unable to serialize message\n",
2486                         ERROR + INTERNAL_ERROR);
2487                 return (-1L);
2488         }
2489
2490         /* Write our little bundle of joy into the message base */
2491         if (cdb_store(CDB_MSGMAIN, &newmsgid, (int)sizeof(long),
2492                       smr.ser, smr.len) < 0) {
2493                 CtdlLogPrintf(CTDL_ERR, "Can't store message\n");
2494                 retval = 0L;
2495         } else {
2496                 if (is_bigmsg) {
2497                         cdb_store(CDB_BIGMSGS,
2498                                 &newmsgid,
2499                                 (int)sizeof(long),
2500                                 holdM,
2501                                 (strlen(holdM) + 1)
2502                         );
2503                 }
2504                 retval = newmsgid;
2505         }
2506
2507         /* Free the memory we used for the serialized message */
2508         free(smr.ser);
2509
2510         /* Return the *local* message ID to the caller
2511          * (even if we're storing an incoming network message)
2512          */
2513         return(retval);
2514 }
2515
2516
2517
2518 /*
2519  * Serialize a struct CtdlMessage into the format used on disk and network.
2520  *
2521  * This function loads up a "struct ser_ret" (defined in server.h) which
2522  * contains the length of the serialized message and a pointer to the
2523  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
2524  */
2525 void serialize_message(struct ser_ret *ret,             /* return values */
2526                         struct CtdlMessage *msg)        /* unserialized msg */
2527 {
2528         size_t wlen, fieldlen;
2529         int i;
2530         static char *forder = FORDER;
2531
2532         /*
2533          * Check for valid message format
2534          */
2535         if (is_valid_message(msg) == 0) {
2536                 CtdlLogPrintf(CTDL_ERR, "serialize_message() aborting due to invalid message\n");
2537                 ret->len = 0;
2538                 ret->ser = NULL;
2539                 return;
2540         }
2541
2542         ret->len = 3;
2543         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL)
2544                 ret->len = ret->len +
2545                         strlen(msg->cm_fields[(int)forder[i]]) + 2;
2546
2547         ret->ser = malloc(ret->len);
2548         if (ret->ser == NULL) {
2549                 CtdlLogPrintf(CTDL_ERR, "serialize_message() malloc(%ld) failed: %s\n",
2550                         (long)ret->len, strerror(errno));
2551                 ret->len = 0;
2552                 ret->ser = NULL;
2553                 return;
2554         }
2555
2556         ret->ser[0] = 0xFF;
2557         ret->ser[1] = msg->cm_anon_type;
2558         ret->ser[2] = msg->cm_format_type;
2559         wlen = 3;
2560
2561         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
2562                 fieldlen = strlen(msg->cm_fields[(int)forder[i]]);
2563                 ret->ser[wlen++] = (char)forder[i];
2564                 safestrncpy((char *)&ret->ser[wlen], msg->cm_fields[(int)forder[i]], fieldlen+1);
2565                 wlen = wlen + fieldlen + 1;
2566         }
2567         if (ret->len != wlen) CtdlLogPrintf(CTDL_ERR, "ERROR: len=%ld wlen=%ld\n",
2568                 (long)ret->len, (long)wlen);
2569
2570         return;
2571 }
2572
2573
2574 /*
2575  * Serialize a struct CtdlMessage into the format used on disk and network.
2576  *
2577  * This function loads up a "struct ser_ret" (defined in server.h) which
2578  * contains the length of the serialized message and a pointer to the
2579  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
2580  */
2581 void dump_message(struct CtdlMessage *msg,      /* unserialized msg */
2582                   long Siz)                     /* how many chars ? */
2583 {
2584         size_t wlen;
2585         int i;
2586         static char *forder = FORDER;
2587         char *buf;
2588
2589         /*
2590          * Check for valid message format
2591          */
2592         if (is_valid_message(msg) == 0) {
2593                 CtdlLogPrintf(CTDL_ERR, "dump_message() aborting due to invalid message\n");
2594                 return;
2595         }
2596
2597         buf = (char*) malloc (Siz + 1);
2598
2599         wlen = 3;
2600
2601         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
2602                         snprintf (buf, Siz, " msg[%c] = %s ...\n", (char) forder[i],
2603                                    msg->cm_fields[(int)forder[i]]);
2604                         client_write (buf, strlen(buf));
2605                 }
2606
2607         return;
2608 }
2609
2610
2611
2612 /*
2613  * Check to see if any messages already exist in the current room which
2614  * carry the same Exclusive ID as this one.  If any are found, delete them.
2615  */
2616 void ReplicationChecks(struct CtdlMessage *msg) {
2617         long old_msgnum = (-1L);
2618
2619         if (DoesThisRoomNeedEuidIndexing(&CC->room) == 0) return;
2620
2621         CtdlLogPrintf(CTDL_DEBUG, "Performing replication checks in <%s>\n",
2622                 CC->room.QRname);
2623
2624         /* No exclusive id?  Don't do anything. */
2625         if (msg == NULL) return;
2626         if (msg->cm_fields['E'] == NULL) return;
2627         if (IsEmptyStr(msg->cm_fields['E'])) return;
2628         /*CtdlLogPrintf(CTDL_DEBUG, "Exclusive ID: <%s> for room <%s>\n",
2629                 msg->cm_fields['E'], CC->room.QRname);*/
2630
2631         old_msgnum = locate_message_by_euid(msg->cm_fields['E'], &CC->room);
2632         if (old_msgnum > 0L) {
2633                 CtdlLogPrintf(CTDL_DEBUG, "ReplicationChecks() replacing message %ld\n", old_msgnum);
2634                 CtdlDeleteMessages(CC->room.QRname, &old_msgnum, 1, "");
2635         }
2636 }
2637
2638
2639
2640 /*
2641  * Save a message to disk and submit it into the delivery system.
2642  */
2643 long CtdlSubmitMsg(struct CtdlMessage *msg,     /* message to save */
2644                    struct recptypes *recps,     /* recipients (if mail) */
2645                    char *force,                 /* force a particular room? */
2646                    int flags                    /* should the bessage be exported clean? */
2647 ) {
2648         char submit_filename[128];
2649         char generated_timestamp[32];
2650         char hold_rm[ROOMNAMELEN];
2651         char actual_rm[ROOMNAMELEN];
2652         char force_room[ROOMNAMELEN];
2653         char content_type[SIZ];                 /* We have to learn this */
2654         char recipient[SIZ];
2655         long newmsgid;
2656         char *mptr = NULL;
2657         struct ctdluser userbuf;
2658         int a, i;
2659         struct MetaData smi;
2660         FILE *network_fp = NULL;
2661         static int seqnum = 1;
2662         struct CtdlMessage *imsg = NULL;
2663         char *instr = NULL;
2664         size_t instr_alloc = 0;
2665         struct ser_ret smr;
2666         char *hold_R, *hold_D;
2667         char *collected_addresses = NULL;
2668         struct addresses_to_be_filed *aptr = NULL;
2669         char *saved_rfc822_version = NULL;
2670         int qualified_for_journaling = 0;
2671         struct CitContext *CCC = CC;            /* CachedCitContext - performance boost */
2672         char bounce_to[1024] = "";
2673         size_t tmp = 0;
2674         int rv = 0;
2675
2676         CtdlLogPrintf(CTDL_DEBUG, "CtdlSubmitMsg() called\n");
2677         if (is_valid_message(msg) == 0) return(-1);     /* self check */
2678
2679         /* If this message has no timestamp, we take the liberty of
2680          * giving it one, right now.
2681          */
2682         if (msg->cm_fields['T'] == NULL) {
2683                 snprintf(generated_timestamp, sizeof generated_timestamp, "%ld", (long)time(NULL));
2684                 msg->cm_fields['T'] = strdup(generated_timestamp);
2685         }
2686
2687         /* If this message has no path, we generate one.
2688          */
2689         if (msg->cm_fields['P'] == NULL) {
2690                 if (msg->cm_fields['A'] != NULL) {
2691                         msg->cm_fields['P'] = strdup(msg->cm_fields['A']);
2692                         for (a=0; !IsEmptyStr(&msg->cm_fields['P'][a]); ++a) {
2693                                 if (isspace(msg->cm_fields['P'][a])) {
2694                                         msg->cm_fields['P'][a] = ' ';
2695                                 }
2696                         }
2697                 }
2698                 else {
2699                         msg->cm_fields['P'] = strdup("unknown");
2700                 }
2701         }
2702
2703         if (force == NULL) {
2704                 strcpy(force_room, "");
2705         }
2706         else {
2707                 strcpy(force_room, force);
2708         }
2709
2710         /* Learn about what's inside, because it's what's inside that counts */
2711         if (msg->cm_fields['M'] == NULL) {
2712                 CtdlLogPrintf(CTDL_ERR, "ERROR: attempt to save message with NULL body\n");
2713                 return(-2);
2714         }
2715
2716         switch (msg->cm_format_type) {
2717         case 0:
2718                 strcpy(content_type, "text/x-citadel-variformat");
2719                 break;
2720         case 1:
2721                 strcpy(content_type, "text/plain");
2722                 break;
2723         case 4:
2724                 strcpy(content_type, "text/plain");
2725                 mptr = bmstrcasestr(msg->cm_fields['M'], "Content-type:");
2726                 if (mptr != NULL) {
2727                         char *aptr;
2728                         safestrncpy(content_type, &mptr[13], sizeof content_type);
2729                         striplt(content_type);
2730                         aptr = content_type;
2731                         while (!IsEmptyStr(aptr)) {
2732                                 if ((*aptr == ';')
2733                                     || (*aptr == ' ')
2734                                     || (*aptr == 13)
2735                                     || (*aptr == 10)) {
2736                                         *aptr = 0;
2737                                 }
2738                                 else aptr++;
2739                         }
2740                 }
2741         }
2742
2743         /* Goto the correct room */
2744         CtdlLogPrintf(CTDL_DEBUG, "Selected room %s\n", (recps) ? CCC->room.QRname : SENTITEMS);
2745         strcpy(hold_rm, CCC->room.QRname);
2746         strcpy(actual_rm, CCC->room.QRname);
2747         if (recps != NULL) {
2748                 strcpy(actual_rm, SENTITEMS);
2749         }
2750
2751         /* If the user is a twit, move to the twit room for posting */
2752         if (TWITDETECT) {
2753                 if (CCC->user.axlevel == 2) {
2754                         strcpy(hold_rm, actual_rm);
2755                         strcpy(actual_rm, config.c_twitroom);
2756                         CtdlLogPrintf(CTDL_DEBUG, "Diverting to twit room\n");
2757                 }
2758         }
2759
2760         /* ...or if this message is destined for Aide> then go there. */
2761         if (!IsEmptyStr(force_room)) {
2762                 strcpy(actual_rm, force_room);
2763         }
2764
2765         CtdlLogPrintf(CTDL_DEBUG, "Final selection: %s\n", actual_rm);
2766         if (strcasecmp(actual_rm, CCC->room.QRname)) {
2767                 /* getroom(&CCC->room, actual_rm); */
2768                 usergoto(actual_rm, 0, 1, NULL, NULL);
2769         }
2770
2771         /*
2772          * If this message has no O (room) field, generate one.
2773          */
2774         if (msg->cm_fields['O'] == NULL) {
2775                 msg->cm_fields['O'] = strdup(CCC->room.QRname);
2776         }
2777
2778         /* Perform "before save" hooks (aborting if any return nonzero) */
2779         CtdlLogPrintf(CTDL_DEBUG, "Performing before-save hooks\n");
2780         if (PerformMessageHooks(msg, EVT_BEFORESAVE) > 0) return(-3);
2781
2782         /*
2783          * If this message has an Exclusive ID, and the room is replication
2784          * checking enabled, then do replication checks.
2785          */
2786         if (DoesThisRoomNeedEuidIndexing(&CCC->room)) {
2787                 ReplicationChecks(msg);
2788         }
2789
2790         /* Save it to disk */
2791         CtdlLogPrintf(CTDL_DEBUG, "Saving to disk\n");
2792         newmsgid = send_message(msg);
2793         if (newmsgid <= 0L) return(-5);
2794
2795         /* Write a supplemental message info record.  This doesn't have to
2796          * be a critical section because nobody else knows about this message
2797          * yet.
2798          */
2799         CtdlLogPrintf(CTDL_DEBUG, "Creating MetaData record\n");
2800         memset(&smi, 0, sizeof(struct MetaData));
2801         smi.meta_msgnum = newmsgid;
2802         smi.meta_refcount = 0;
2803         safestrncpy(smi.meta_content_type, content_type,
2804                         sizeof smi.meta_content_type);
2805
2806         /*
2807          * Measure how big this message will be when rendered as RFC822.
2808          * We do this for two reasons:
2809          * 1. We need the RFC822 length for the new metadata record, so the
2810          *    POP and IMAP services don't have to calculate message lengths
2811          *    while the user is waiting (multiplied by potentially hundreds
2812          *    or thousands of messages).
2813          * 2. If journaling is enabled, we will need an RFC822 version of the
2814          *    message to attach to the journalized copy.
2815          */
2816         if (CCC->redirect_buffer != NULL) {
2817                 CtdlLogPrintf(CTDL_ALERT, "CCC->redirect_buffer is not NULL during message submission!\n");
2818                 abort();
2819         }
2820         CCC->redirect_buffer = malloc(SIZ);
2821         CCC->redirect_len = 0;
2822         CCC->redirect_alloc = SIZ;
2823         CtdlOutputPreLoadedMsg(msg, MT_RFC822, HEADERS_ALL, 0, 1, QP_EADDR);
2824         smi.meta_rfc822_length = CCC->redirect_len;
2825         saved_rfc822_version = CCC->redirect_buffer;
2826         CCC->redirect_buffer = NULL;
2827         CCC->redirect_len = 0;
2828         CCC->redirect_alloc = 0;
2829
2830         PutMetaData(&smi);
2831
2832         /* Now figure out where to store the pointers */
2833         CtdlLogPrintf(CTDL_DEBUG, "Storing pointers\n");
2834
2835         /* If this is being done by the networker delivering a private
2836          * message, we want to BYPASS saving the sender's copy (because there
2837          * is no local sender; it would otherwise go to the Trashcan).
2838          */
2839         if ((!CCC->internal_pgm) || (recps == NULL)) {
2840                 if (CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 1, msg) != 0) {
2841                         CtdlLogPrintf(CTDL_ERR, "ERROR saving message pointer!\n");
2842                         CtdlSaveMsgPointerInRoom(config.c_aideroom, newmsgid, 0, msg);
2843                 }
2844         }
2845
2846         /* For internet mail, drop a copy in the outbound queue room */
2847         if ((recps != NULL) && (recps->num_internet > 0)) {
2848                 CtdlSaveMsgPointerInRoom(SMTP_SPOOLOUT_ROOM, newmsgid, 0, msg);
2849         }
2850
2851         /* If other rooms are specified, drop them there too. */
2852         if ((recps != NULL) && (recps->num_room > 0))
2853           for (i=0; i<num_tokens(recps->recp_room, '|'); ++i) {
2854                 extract_token(recipient, recps->recp_room, i,
2855                                         '|', sizeof recipient);
2856                 CtdlLogPrintf(CTDL_DEBUG, "Delivering to room <%s>\n", recipient);
2857                 CtdlSaveMsgPointerInRoom(recipient, newmsgid, 0, msg);
2858         }
2859
2860         /* Bump this user's messages posted counter. */
2861         CtdlLogPrintf(CTDL_DEBUG, "Updating user\n");
2862         lgetuser(&CCC->user, CCC->curr_user);
2863         CCC->user.posted = CCC->user.posted + 1;
2864         lputuser(&CCC->user);
2865
2866         /* Decide where bounces need to be delivered */
2867         if ((recps != NULL) && (recps->bounce_to != NULL)) {
2868                 safestrncpy(bounce_to, recps->bounce_to, sizeof bounce_to);
2869         }
2870         else if (CCC->logged_in) {
2871                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", CCC->user.fullname, config.c_nodename);
2872         }
2873         else {
2874                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", msg->cm_fields['A'], msg->cm_fields['N']);
2875         }
2876
2877         /* If this is private, local mail, make a copy in the
2878          * recipient's mailbox and bump the reference count.
2879          */
2880         if ((recps != NULL) && (recps->num_local > 0))
2881           for (i=0; i<num_tokens(recps->recp_local, '|'); ++i) {
2882                 extract_token(recipient, recps->recp_local, i,
2883                                         '|', sizeof recipient);
2884                 CtdlLogPrintf(CTDL_DEBUG, "Delivering private local mail to <%s>\n",
2885                         recipient);
2886                 if (getuser(&userbuf, recipient) == 0) {
2887                         // Add a flag so the Funambol module knows its mail
2888                         msg->cm_fields['W'] = strdup(recipient);
2889                         MailboxName(actual_rm, sizeof actual_rm, &userbuf, MAILROOM);
2890                         CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 0, msg);
2891                         BumpNewMailCounter(userbuf.usernum);
2892                         if (!IsEmptyStr(config.c_funambol_host) || !IsEmptyStr(config.c_pager_program)) {
2893                         /* Generate a instruction message for the Funambol notification
2894                          * server, in the same style as the SMTP queue
2895                          */
2896                            instr_alloc = 1024;
2897                            instr = malloc(instr_alloc);
2898                            snprintf(instr, instr_alloc,
2899                         "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
2900                         "bounceto|%s\n",
2901                         SPOOLMIME, newmsgid, (long)time(NULL),
2902                         bounce_to
2903                         );
2904
2905                            imsg = malloc(sizeof(struct CtdlMessage));
2906                            memset(imsg, 0, sizeof(struct CtdlMessage));
2907                            imsg->cm_magic = CTDLMESSAGE_MAGIC;
2908                            imsg->cm_anon_type = MES_NORMAL;
2909                            imsg->cm_format_type = FMT_RFC822;
2910                            imsg->cm_fields['A'] = strdup("Citadel");
2911                            imsg->cm_fields['J'] = strdup("do not journal");
2912                            imsg->cm_fields['M'] = instr;        /* imsg owns this memory now */
2913                            imsg->cm_fields['W'] = strdup(recipient);
2914                            CtdlSubmitMsg(imsg, NULL, FNBL_QUEUE_ROOM, 0);
2915                            CtdlFreeMessage(imsg);
2916                         }
2917                 }
2918                 else {
2919                         CtdlLogPrintf(CTDL_DEBUG, "No user <%s>\n", recipient);
2920                         CtdlSaveMsgPointerInRoom(config.c_aideroom,
2921                                 newmsgid, 0, msg);
2922                 }
2923         }
2924
2925         /* Perform "after save" hooks */
2926         CtdlLogPrintf(CTDL_DEBUG, "Performing after-save hooks\n");
2927         PerformMessageHooks(msg, EVT_AFTERSAVE);
2928
2929         /* For IGnet mail, we have to save a new copy into the spooler for
2930          * each recipient, with the R and D fields set to the recipient and
2931          * destination-node.  This has two ugly side effects: all other
2932          * recipients end up being unlisted in this recipient's copy of the
2933          * message, and it has to deliver multiple messages to the same
2934          * node.  We'll revisit this again in a year or so when everyone has
2935          * a network spool receiver that can handle the new style messages.
2936          */
2937         if ((recps != NULL) && (recps->num_ignet > 0))
2938           for (i=0; i<num_tokens(recps->recp_ignet, '|'); ++i) {
2939                 extract_token(recipient, recps->recp_ignet, i,
2940                                 '|', sizeof recipient);
2941
2942                 hold_R = msg->cm_fields['R'];
2943                 hold_D = msg->cm_fields['D'];
2944                 msg->cm_fields['R'] = malloc(SIZ);
2945                 msg->cm_fields['D'] = malloc(128);
2946                 extract_token(msg->cm_fields['R'], recipient, 0, '@', SIZ);
2947                 extract_token(msg->cm_fields['D'], recipient, 1, '@', 128);
2948
2949                 serialize_message(&smr, msg);
2950                 if (smr.len > 0) {
2951                         snprintf(submit_filename, sizeof submit_filename,
2952                                          "%s/netmail.%04lx.%04x.%04x",
2953                                          ctdl_netin_dir,
2954                                          (long) getpid(), CCC->cs_pid, ++seqnum);
2955                         network_fp = fopen(submit_filename, "wb+");
2956                         if (network_fp != NULL) {
2957                                 rv = fwrite(smr.ser, smr.len, 1, network_fp);
2958                                 fclose(network_fp);
2959                         }
2960                         free(smr.ser);
2961                 }
2962
2963                 free(msg->cm_fields['R']);
2964                 free(msg->cm_fields['D']);
2965                 msg->cm_fields['R'] = hold_R;
2966                 msg->cm_fields['D'] = hold_D;
2967         }
2968
2969         /* Go back to the room we started from */
2970         CtdlLogPrintf(CTDL_DEBUG, "Returning to original room %s\n", hold_rm);
2971         if (strcasecmp(hold_rm, CCC->room.QRname))
2972                 usergoto(hold_rm, 0, 1, NULL, NULL);
2973
2974         /* For internet mail, generate delivery instructions.
2975          * Yes, this is recursive.  Deal with it.  Infinite recursion does
2976          * not happen because the delivery instructions message does not
2977          * contain a recipient.
2978          */
2979         if ((recps != NULL) && (recps->num_internet > 0)) {
2980                 CtdlLogPrintf(CTDL_DEBUG, "Generating delivery instructions\n");
2981                 instr_alloc = 1024;
2982                 instr = malloc(instr_alloc);
2983                 snprintf(instr, instr_alloc,
2984                         "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
2985                         "bounceto|%s\n",
2986                         SPOOLMIME, newmsgid, (long)time(NULL),
2987                         bounce_to
2988                 );
2989
2990                 if (recps->envelope_from != NULL) {
2991                         tmp = strlen(instr);
2992                         snprintf(&instr[tmp], instr_alloc-tmp, "envelope_from|%s\n", recps->envelope_from);
2993                 }
2994
2995                 for (i=0; i<num_tokens(recps->recp_internet, '|'); ++i) {
2996                         tmp = strlen(instr);
2997                         extract_token(recipient, recps->recp_internet, i, '|', sizeof recipient);
2998                         if ((tmp + strlen(recipient) + 32) > instr_alloc) {
2999                                 instr_alloc = instr_alloc * 2;
3000                                 instr = realloc(instr, instr_alloc);
3001                         }
3002                         snprintf(&instr[tmp], instr_alloc - tmp, "remote|%s|0||\n", recipient);
3003                 }
3004
3005                 imsg = malloc(sizeof(struct CtdlMessage));
3006                 memset(imsg, 0, sizeof(struct CtdlMessage));
3007                 imsg->cm_magic = CTDLMESSAGE_MAGIC;
3008                 imsg->cm_anon_type = MES_NORMAL;
3009                 imsg->cm_format_type = FMT_RFC822;
3010                 imsg->cm_fields['A'] = strdup("Citadel");
3011                 imsg->cm_fields['J'] = strdup("do not journal");
3012                 imsg->cm_fields['M'] = instr;   /* imsg owns this memory now */
3013                 CtdlSubmitMsg(imsg, NULL, SMTP_SPOOLOUT_ROOM, QP_EADDR);
3014                 CtdlFreeMessage(imsg);
3015         }
3016
3017         /*
3018          * Any addresses to harvest for someone's address book?
3019          */
3020         if ( (CCC->logged_in) && (recps != NULL) ) {
3021                 collected_addresses = harvest_collected_addresses(msg);
3022         }
3023
3024         if (collected_addresses != NULL) {
3025                 aptr = (struct addresses_to_be_filed *)
3026                         malloc(sizeof(struct addresses_to_be_filed));
3027                 MailboxName(actual_rm, sizeof actual_rm,
3028                         &CCC->user, USERCONTACTSROOM);
3029                 aptr->roomname = strdup(actual_rm);
3030                 aptr->collected_addresses = collected_addresses;
3031                 begin_critical_section(S_ATBF);
3032                 aptr->next = atbf;
3033                 atbf = aptr;
3034                 end_critical_section(S_ATBF);
3035         }
3036
3037         /*
3038          * Determine whether this message qualifies for journaling.
3039          */
3040         if (msg->cm_fields['J'] != NULL) {
3041                 qualified_for_journaling = 0;
3042         }
3043         else {
3044                 if (recps == NULL) {
3045                         qualified_for_journaling = config.c_journal_pubmsgs;
3046                 }
3047                 else if (recps->num_local + recps->num_ignet + recps->num_internet > 0) {
3048                         qualified_for_journaling = config.c_journal_email;
3049                 }
3050                 else {
3051                         qualified_for_journaling = config.c_journal_pubmsgs;
3052                 }
3053         }
3054
3055         /*
3056          * Do we have to perform journaling?  If so, hand off the saved
3057          * RFC822 version will be handed off to the journaler for background
3058          * submit.  Otherwise, we have to free the memory ourselves.
3059          */
3060         if (saved_rfc822_version != NULL) {
3061                 if (qualified_for_journaling) {
3062                         JournalBackgroundSubmit(msg, saved_rfc822_version, recps);
3063                 }
3064                 else {
3065                         free(saved_rfc822_version);
3066                 }
3067         }
3068
3069         /* Done. */
3070         return(newmsgid);
3071 }
3072
3073
3074
3075
3076
3077 /*
3078  * Convenience function for generating small administrative messages.
3079  */
3080 void quickie_message(const char *from, const char *fromaddr, char *to, char *room, const char *text,
3081                         int format_type, const char *subject)
3082 {
3083         struct CtdlMessage *msg;
3084         struct recptypes *recp = NULL;
3085
3086         msg = malloc(sizeof(struct CtdlMessage));
3087         memset(msg, 0, sizeof(struct CtdlMessage));
3088         msg->cm_magic = CTDLMESSAGE_MAGIC;
3089         msg->cm_anon_type = MES_NORMAL;
3090         msg->cm_format_type = format_type;
3091
3092         if (from != NULL) {
3093                 msg->cm_fields['A'] = strdup(from);
3094         }
3095         else if (fromaddr != NULL) {
3096                 msg->cm_fields['A'] = strdup(fromaddr);
3097                 if (strchr(msg->cm_fields['A'], '@')) {
3098                         *strchr(msg->cm_fields['A'], '@') = 0;
3099                 }
3100         }
3101         else {
3102                 msg->cm_fields['A'] = strdup("Citadel");
3103         }
3104
3105         if (fromaddr != NULL) msg->cm_fields['F'] = strdup(fromaddr);
3106         if (room != NULL) msg->cm_fields['O'] = strdup(room);
3107         msg->cm_fields['N'] = strdup(NODENAME);
3108         if (to != NULL) {
3109                 msg->cm_fields['R'] = strdup(to);
3110                 recp = validate_recipients(to, NULL, 0);
3111         }
3112         if (subject != NULL) {
3113                 msg->cm_fields['U'] = strdup(subject);
3114         }
3115         msg->cm_fields['M'] = strdup(text);
3116
3117         CtdlSubmitMsg(msg, recp, room, 0);
3118         CtdlFreeMessage(msg);
3119         if (recp != NULL) free_recipients(recp);
3120 }
3121
3122
3123
3124 /*
3125  * Back end function used by CtdlMakeMessage() and similar functions
3126  */
3127 char *CtdlReadMessageBody(char *terminator,     /* token signalling EOT */
3128                         size_t maxlen,          /* maximum message length */
3129                         char *exist,            /* if non-null, append to it;
3130                                                    exist is ALWAYS freed  */
3131                         int crlf,               /* CRLF newlines instead of LF */
3132                         int sock                /* socket handle or 0 for this session's client socket */
3133                         ) {
3134         char buf[1024];
3135         int linelen;
3136         size_t message_len = 0;
3137         size_t buffer_len = 0;
3138         char *ptr;
3139         char *m;
3140         int flushing = 0;
3141         int finished = 0;
3142         int dotdot = 0;
3143
3144         if (exist == NULL) {
3145                 m = malloc(4096);
3146                 m[0] = 0;
3147                 buffer_len = 4096;
3148                 message_len = 0;
3149         }
3150         else {
3151                 message_len = strlen(exist);
3152                 buffer_len = message_len + 4096;
3153                 m = realloc(exist, buffer_len);
3154                 if (m == NULL) {
3155                         free(exist);
3156                         return m;
3157                 }
3158         }
3159
3160         /* Do we need to change leading ".." to "." for SMTP escaping? */
3161         if (!strcmp(terminator, ".")) {
3162                 dotdot = 1;
3163         }
3164
3165         /* flush the input if we have nowhere to store it */
3166         if (m == NULL) {
3167                 flushing = 1;
3168         }
3169
3170         /* read in the lines of message text one by one */
3171         do {
3172                 if (sock > 0) {
3173                         if (sock_getln(sock, buf, (sizeof buf - 3)) < 0) finished = 1;
3174                 }
3175                 else {
3176                         if (client_getln(buf, (sizeof buf - 3)) < 1) finished = 1;
3177                 }
3178                 if (!strcmp(buf, terminator)) finished = 1;
3179                 if (crlf) {
3180                         strcat(buf, "\r\n");
3181                 }
3182                 else {
3183                         strcat(buf, "\n");
3184                 }
3185
3186                 /* Unescape SMTP-style input of two dots at the beginning of the line */
3187                 if (dotdot) {
3188                         if (!strncmp(buf, "..", 2)) {
3189                                 strcpy(buf, &buf[1]);
3190                         }
3191                 }
3192
3193                 if ( (!flushing) && (!finished) ) {
3194                         /* Measure the line */
3195                         linelen = strlen(buf);
3196
3197                         /* augment the buffer if we have to */
3198                         if ((message_len + linelen) >= buffer_len) {
3199                                 ptr = realloc(m, (buffer_len * 2) );
3200                                 if (ptr == NULL) {      /* flush if can't allocate */
3201                                         flushing = 1;
3202                                 } else {
3203                                         buffer_len = (buffer_len * 2);
3204                                         m = ptr;
3205                                         CtdlLogPrintf(CTDL_DEBUG, "buffer_len is now %ld\n", (long)buffer_len);
3206                                 }
3207                         }
3208
3209                         /* Add the new line to the buffer.  NOTE: this loop must avoid
3210                         * using functions like strcat() and strlen() because they
3211                         * traverse the entire buffer upon every call, and doing that
3212                         * for a multi-megabyte message slows it down beyond usability.
3213                         */
3214                         strcpy(&m[message_len], buf);
3215                         message_len += linelen;
3216                 }
3217
3218                 /* if we've hit the max msg length, flush the rest */
3219                 if (message_len >= maxlen) flushing = 1;
3220
3221         } while (!finished);
3222         return(m);
3223 }
3224
3225
3226
3227
3228 /*
3229  * Build a binary message to be saved on disk.
3230  * (NOTE: if you supply 'preformatted_text', the buffer you give it
3231  * will become part of the message.  This means you are no longer
3232  * responsible for managing that memory -- it will be freed along with
3233  * the rest of the fields when CtdlFreeMessage() is called.)
3234  */
3235
3236 struct CtdlMessage *CtdlMakeMessage(
3237         struct ctdluser *author,        /* author's user structure */
3238         char *recipient,                /* NULL if it's not mail */
3239         char *recp_cc,                  /* NULL if it's not mail */
3240         char *room,                     /* room where it's going */
3241         int type,                       /* see MES_ types in header file */
3242         int format_type,                /* variformat, plain text, MIME... */
3243         char *fake_name,                /* who we're masquerading as */
3244         char *my_email,                 /* which of my email addresses to use (empty is ok) */
3245         char *subject,                  /* Subject (optional) */
3246         char *supplied_euid,            /* ...or NULL if this is irrelevant */
3247         char *preformatted_text,        /* ...or NULL to read text from client */
3248         char *references                /* Thread references */
3249 ) {
3250         char dest_node[256];
3251         char buf[1024];
3252         struct CtdlMessage *msg;
3253
3254         msg = malloc(sizeof(struct CtdlMessage));
3255         memset(msg, 0, sizeof(struct CtdlMessage));
3256         msg->cm_magic = CTDLMESSAGE_MAGIC;
3257         msg->cm_anon_type = type;
3258         msg->cm_format_type = format_type;
3259
3260         /* Don't confuse the poor folks if it's not routed mail. */
3261         strcpy(dest_node, "");
3262
3263         if (recipient != NULL) striplt(recipient);
3264         if (recp_cc != NULL) striplt(recp_cc);
3265
3266         /* Path or Return-Path */
3267         if (my_email == NULL) my_email = "";
3268
3269         if (!IsEmptyStr(my_email)) {
3270                 msg->cm_fields['P'] = strdup(my_email);
3271         }
3272         else {
3273                 snprintf(buf, sizeof buf, "%s", author->fullname);
3274                 msg->cm_fields['P'] = strdup(buf);
3275         }
3276         convert_spaces_to_underscores(msg->cm_fields['P']);
3277
3278         snprintf(buf, sizeof buf, "%ld", (long)time(NULL));     /* timestamp */
3279         msg->cm_fields['T'] = strdup(buf);
3280
3281         if ((fake_name != NULL) && (fake_name[0])) {            /* author */
3282                 msg->cm_fields['A'] = strdup(fake_name);
3283         }
3284         else {
3285                 msg->cm_fields['A'] = strdup(author->fullname);
3286         }
3287
3288         if (CC->room.QRflags & QR_MAILBOX) {            /* room */
3289                 msg->cm_fields['O'] = strdup(&CC->room.QRname[11]);
3290         }
3291         else {
3292                 msg->cm_fields['O'] = strdup(CC->room.QRname);
3293         }
3294
3295         msg->cm_fields['N'] = strdup(NODENAME);         /* nodename */
3296         msg->cm_fields['H'] = strdup(HUMANNODE);                /* hnodename */
3297
3298         if ((recipient != NULL) && (recipient[0] != 0)) {
3299                 msg->cm_fields['R'] = strdup(recipient);
3300         }
3301         if ((recp_cc != NULL) && (recp_cc[0] != 0)) {
3302                 msg->cm_fields['Y'] = strdup(recp_cc);
3303         }
3304         if (dest_node[0] != 0) {
3305                 msg->cm_fields['D'] = strdup(dest_node);
3306         }
3307
3308         if (!IsEmptyStr(my_email)) {
3309                 msg->cm_fields['F'] = strdup(my_email);
3310         }
3311         else if ( (author == &CC->user) && (!IsEmptyStr(CC->cs_inet_email)) ) {
3312                 msg->cm_fields['F'] = strdup(CC->cs_inet_email);
3313         }
3314
3315         if (subject != NULL) {
3316                 long length;
3317                 striplt(subject);
3318                 length = strlen(subject);
3319                 if (length > 0) {
3320                         long i;
3321                         long IsAscii;
3322                         IsAscii = -1;
3323                         i = 0;
3324                         while ((subject[i] != '\0') &&
3325                                (IsAscii = isascii(subject[i]) != 0 ))
3326                                 i++;
3327                         if (IsAscii != 0)
3328                                 msg->cm_fields['U'] = strdup(subject);
3329                         else /* ok, we've got utf8 in the string. */
3330                         {
3331                                 msg->cm_fields['U'] = rfc2047encode(subject, length);
3332                         }
3333
3334                 }
3335         }
3336
3337         if (supplied_euid != NULL) {
3338                 msg->cm_fields['E'] = strdup(supplied_euid);
3339         }
3340
3341         if (references != NULL) {
3342                 if (!IsEmptyStr(references)) {
3343                         msg->cm_fields['W'] = strdup(references);
3344                 }
3345         }
3346
3347         if (preformatted_text != NULL) {
3348                 msg->cm_fields['M'] = preformatted_text;
3349         }
3350         else {
3351                 msg->cm_fields['M'] = CtdlReadMessageBody("000", config.c_maxmsglen, NULL, 0, 0);
3352         }
3353
3354         return(msg);
3355 }
3356
3357
3358 /*
3359  * Check to see whether we have permission to post a message in the current
3360  * room.  Returns a *CITADEL ERROR CODE* and puts a message in errmsgbuf, or
3361  * returns 0 on success.
3362  */
3363 int CtdlDoIHavePermissionToPostInThisRoom(char *errmsgbuf,
3364                                           size_t n,
3365                                           const char* RemoteIdentifier,
3366                                           int PostPublic) {
3367         int ra;
3368
3369         if (!(CC->logged_in) &&
3370             (PostPublic == POST_LOGGED_IN)) {
3371                 snprintf(errmsgbuf, n, "Not logged in.");
3372                 return (ERROR + NOT_LOGGED_IN);
3373         }
3374         else if (PostPublic == CHECK_EXISTANCE) {
3375                 return (0); // We're Evaling whether a recipient exists
3376         }
3377         else if (!(CC->logged_in)) {
3378
3379                 if ((CC->room.QRflags & QR_READONLY)) {
3380                         snprintf(errmsgbuf, n, "Not logged in.");
3381                         return (ERROR + NOT_LOGGED_IN);
3382                 }
3383                 if (CC->room.QRflags2 & QR2_MODERATED) {
3384                         snprintf(errmsgbuf, n, "Not logged in Moderation feature not yet implemented!");
3385                         return (ERROR + NOT_LOGGED_IN);
3386                 }
3387                 if ((PostPublic!=POST_LMTP) &&(CC->room.QRflags2 & QR2_SMTP_PUBLIC) == 0) {
3388                         SpoolControl *sc;
3389                         char filename[SIZ];
3390                         int found;
3391
3392                         if (RemoteIdentifier == NULL)
3393                         {
3394                                 snprintf(errmsgbuf, n, "Need sender to permit access.");
3395                                 return (ERROR + USERNAME_REQUIRED);
3396                         }
3397
3398                         assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
3399                         begin_critical_section(S_NETCONFIGS);
3400                         if (!read_spoolcontrol_file(&sc, filename))
3401                         {
3402                                 end_critical_section(S_NETCONFIGS);
3403                                 snprintf(errmsgbuf, n,
3404                                         "This mailing list only accepts posts from subscribers.");
3405                                 return (ERROR + NO_SUCH_USER);
3406                         }
3407                         end_critical_section(S_NETCONFIGS);
3408                         found = is_recipient (sc, RemoteIdentifier);
3409                         free_spoolcontrol_struct(&sc);
3410                         if (found) {
3411                                 return (0);
3412                         }
3413                         else {
3414                                 snprintf(errmsgbuf, n,
3415                                         "This mailing list only accepts posts from subscribers.");
3416                                 return (ERROR + NO_SUCH_USER);
3417                         }
3418                 }
3419                 return (0);
3420
3421         }
3422
3423         if ((CC->user.axlevel < 2)
3424             && ((CC->room.QRflags & QR_MAILBOX) == 0)) {
3425                 snprintf(errmsgbuf, n, "Need to be validated to enter "
3426                                 "(except in %s> to sysop)", MAILROOM);
3427                 return (ERROR + HIGHER_ACCESS_REQUIRED);
3428         }
3429
3430         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
3431         if (!(ra & UA_POSTALLOWED)) {
3432                 snprintf(errmsgbuf, n, "Higher access is required to post in this room.");
3433                 return (ERROR + HIGHER_ACCESS_REQUIRED);
3434         }
3435
3436         strcpy(errmsgbuf, "Ok");
3437         return(0);
3438 }
3439
3440
3441 /*
3442  * Check to see if the specified user has Internet mail permission
3443  * (returns nonzero if permission is granted)
3444  */
3445 int CtdlCheckInternetMailPermission(struct ctdluser *who) {
3446
3447         /* Do not allow twits to send Internet mail */
3448         if (who->axlevel <= 2) return(0);
3449
3450         /* Globally enabled? */
3451         if (config.c_restrict == 0) return(1);
3452
3453         /* User flagged ok? */
3454         if (who->flags & US_INTERNET) return(2);
3455
3456         /* Aide level access? */
3457         if (who->axlevel >= 6) return(3);
3458
3459         /* No mail for you! */
3460         return(0);
3461 }
3462
3463
3464 /*
3465  * Validate recipients, count delivery types and errors, and handle aliasing
3466  * FIXME check for dupes!!!!!
3467  *
3468  * Returns 0 if all addresses are ok, ret->num_error = -1 if no addresses
3469  * were specified, or the number of addresses found invalid.
3470  *
3471  * Caller needs to free the result using free_recipients()
3472  */
3473 struct recptypes *validate_recipients(char *supplied_recipients,
3474                                       const char *RemoteIdentifier,
3475                                       int Flags) {
3476         struct recptypes *ret;
3477         char *recipients = NULL;
3478         char this_recp[256];
3479         char this_recp_cooked[256];
3480         char append[SIZ];
3481         int num_recps = 0;
3482         int i, j;
3483         int mailtype;
3484         int invalid;
3485         struct ctdluser tempUS;
3486         struct ctdlroom tempQR;
3487         struct ctdlroom tempQR2;
3488         int err = 0;
3489         char errmsg[SIZ];
3490         int in_quotes = 0;
3491
3492         /* Initialize */
3493         ret = (struct recptypes *) malloc(sizeof(struct recptypes));
3494         if (ret == NULL) return(NULL);
3495
3496         /* Set all strings to null and numeric values to zero */
3497         memset(ret, 0, sizeof(struct recptypes));
3498
3499         if (supplied_recipients == NULL) {
3500                 recipients = strdup("");
3501         }
3502         else {
3503                 recipients = strdup(supplied_recipients);
3504         }
3505
3506         /* Allocate some memory.  Yes, this allocates 500% more memory than we will
3507          * actually need, but it's healthier for the heap than doing lots of tiny
3508          * realloc() calls instead.
3509          */
3510
3511         ret->errormsg = malloc(strlen(recipients) + 1024);
3512         ret->recp_local = malloc(strlen(recipients) + 1024);
3513         ret->recp_internet = malloc(strlen(recipients) + 1024);
3514         ret->recp_ignet = malloc(strlen(recipients) + 1024);
3515         ret->recp_room = malloc(strlen(recipients) + 1024);
3516         ret->display_recp = malloc(strlen(recipients) + 1024);
3517
3518         ret->errormsg[0] = 0;
3519         ret->recp_local[0] = 0;
3520         ret->recp_internet[0] = 0;
3521         ret->recp_ignet[0] = 0;
3522         ret->recp_room[0] = 0;
3523         ret->display_recp[0] = 0;
3524
3525         ret->recptypes_magic = RECPTYPES_MAGIC;
3526
3527         /* Change all valid separator characters to commas */
3528         for (i=0; !IsEmptyStr(&recipients[i]); ++i) {
3529                 if ((recipients[i] == ';') || (recipients[i] == '|')) {
3530                         recipients[i] = ',';
3531                 }
3532         }
3533
3534         /* Now start extracting recipients... */
3535
3536         while (!IsEmptyStr(recipients)) {
3537
3538                 for (i=0; i<=strlen(recipients); ++i) {
3539                         if (recipients[i] == '\"') in_quotes = 1 - in_quotes;
3540                         if ( ( (recipients[i] == ',') && (!in_quotes) ) || (recipients[i] == 0) ) {
3541                                 safestrncpy(this_recp, recipients, i+1);
3542                                 this_recp[i] = 0;
3543                                 if (recipients[i] == ',') {
3544                                         strcpy(recipients, &recipients[i+1]);
3545                                 }
3546                                 else {
3547                                         strcpy(recipients, "");
3548                                 }
3549                                 break;
3550                         }
3551                 }
3552
3553                 striplt(this_recp);
3554                 if (IsEmptyStr(this_recp))
3555                         break;
3556                 CtdlLogPrintf(CTDL_DEBUG, "Evaluating recipient #%d: %s\n", num_recps, this_recp);
3557                 ++num_recps;
3558                 mailtype = alias(this_recp);
3559                 mailtype = alias(this_recp);
3560                 mailtype = alias(this_recp);
3561                 j = 0;
3562                 for (j=0; !IsEmptyStr(&this_recp[j]); ++j) {
3563                         if (this_recp[j]=='_') {
3564                                 this_recp_cooked[j] = ' ';
3565                         }
3566                         else {
3567                                 this_recp_cooked[j] = this_recp[j];
3568                         }
3569                 }
3570                 this_recp_cooked[j] = '\0';
3571                 invalid = 0;
3572                 errmsg[0] = 0;
3573                 switch(mailtype) {
3574                         case MES_LOCAL:
3575                                 if (!strcasecmp(this_recp, "sysop")) {
3576                                         ++ret->num_room;
3577                                         strcpy(this_recp, config.c_aideroom);
3578                                         if (!IsEmptyStr(ret->recp_room)) {
3579                                                 strcat(ret->recp_room, "|");
3580                                         }
3581                                         strcat(ret->recp_room, this_recp);
3582                                 }
3583                                 else if ( (!strncasecmp(this_recp, "room_", 5))
3584                                       && (!getroom(&tempQR, &this_recp_cooked[5])) ) {
3585
3586                                         /* Save room so we can restore it later */
3587                                         tempQR2 = CC->room;
3588                                         CC->room = tempQR;
3589
3590                                         /* Check permissions to send mail to this room */
3591                                         err = CtdlDoIHavePermissionToPostInThisRoom(errmsg,
3592                                                                                     sizeof errmsg,
3593                                                                                     RemoteIdentifier,
3594                                                                                     Flags
3595                                         );
3596                                         if (err)
3597                                         {
3598                                                 ++ret->num_error;
3599                                                 invalid = 1;
3600                                         }
3601                                         else {
3602                                                 ++ret->num_room;
3603                                                 if (!IsEmptyStr(ret->recp_room)) {
3604                                                         strcat(ret->recp_room, "|");
3605                                                 }
3606                                                 strcat(ret->recp_room, &this_recp_cooked[5]);
3607                                         }
3608
3609                                         /* Restore room in case something needs it */
3610                                         CC->room = tempQR2;
3611
3612                                 }
3613                                 else if (getuser(&tempUS, this_recp) == 0) {
3614                                         ++ret->num_local;
3615                                         strcpy(this_recp, tempUS.fullname);
3616                                         if (!IsEmptyStr(ret->recp_local)) {
3617                                                 strcat(ret->recp_local, "|");
3618                                         }
3619                                         strcat(ret->recp_local, this_recp);
3620                                 }
3621                                 else if (getuser(&tempUS, this_recp_cooked) == 0) {
3622                                         ++ret->num_local;
3623                                         strcpy(this_recp, tempUS.fullname);
3624                                         if (!IsEmptyStr(ret->recp_local)) {
3625                                                 strcat(ret->recp_local, "|");
3626                                         }
3627                                         strcat(ret->recp_local, this_recp);
3628                                 }
3629                                 else {
3630                                         ++ret->num_error;
3631                                         invalid = 1;
3632                                 }
3633                                 break;
3634                         case MES_INTERNET:
3635                                 /* Yes, you're reading this correctly: if the target
3636                                  * domain points back to the local system or an attached
3637                                  * Citadel directory, the address is invalid.  That's
3638                                  * because if the address were valid, we would have
3639                                  * already translated it to a local address by now.
3640                                  */
3641                                 if (IsDirectory(this_recp, 0)) {
3642                                         ++ret->num_error;
3643                                         invalid = 1;
3644                                 }
3645                                 else {
3646                                         ++ret->num_internet;
3647                                         if (!IsEmptyStr(ret->recp_internet)) {
3648                                                 strcat(ret->recp_internet, "|");
3649                                         }
3650                                         strcat(ret->recp_internet, this_recp);
3651                                 }
3652                                 break;
3653                         case MES_IGNET:
3654                                 ++ret->num_ignet;
3655                                 if (!IsEmptyStr(ret->recp_ignet)) {
3656                                         strcat(ret->recp_ignet, "|");
3657                                 }
3658                                 strcat(ret->recp_ignet, this_recp);
3659                                 break;
3660                         case MES_ERROR:
3661                                 ++ret->num_error;
3662                                 invalid = 1;
3663                                 break;
3664                 }
3665                 if (invalid) {
3666                         if (IsEmptyStr(errmsg)) {
3667                                 snprintf(append, sizeof append, "Invalid recipient: %s", this_recp);
3668                         }
3669                         else {
3670                                 snprintf(append, sizeof append, "%s", errmsg);
3671                         }
3672                         if ( (strlen(ret->errormsg) + strlen(append) + 3) < SIZ) {
3673                                 if (!IsEmptyStr(ret->errormsg)) {
3674                                         strcat(ret->errormsg, "; ");
3675                                 }
3676                                 strcat(ret->errormsg, append);
3677                         }
3678                 }
3679                 else {
3680                         if (IsEmptyStr(ret->display_recp)) {
3681                                 strcpy(append, this_recp);
3682                         }
3683                         else {
3684                                 snprintf(append, sizeof append, ", %s", this_recp);
3685                         }
3686                         if ( (strlen(ret->display_recp)+strlen(append)) < SIZ) {
3687                                 strcat(ret->display_recp, append);
3688                         }
3689                 }
3690         }
3691
3692         if ((ret->num_local + ret->num_internet + ret->num_ignet +
3693            ret->num_room + ret->num_error) == 0) {
3694                 ret->num_error = (-1);
3695                 strcpy(ret->errormsg, "No recipients specified.");
3696         }
3697
3698         CtdlLogPrintf(CTDL_DEBUG, "validate_recipients()\n");
3699         CtdlLogPrintf(CTDL_DEBUG, " local: %d <%s>\n", ret->num_local, ret->recp_local);
3700         CtdlLogPrintf(CTDL_DEBUG, "  room: %d <%s>\n", ret->num_room, ret->recp_room);
3701         CtdlLogPrintf(CTDL_DEBUG, "  inet: %d <%s>\n", ret->num_internet, ret->recp_internet);
3702         CtdlLogPrintf(CTDL_DEBUG, " ignet: %d <%s>\n", ret->num_ignet, ret->recp_ignet);
3703         CtdlLogPrintf(CTDL_DEBUG, " error: %d <%s>\n", ret->num_error, ret->errormsg);
3704
3705         free(recipients);
3706         return(ret);
3707 }
3708
3709
3710 /*
3711  * Destructor for struct recptypes
3712  */
3713 void free_recipients(struct recptypes *valid) {
3714
3715         if (valid == NULL) {
3716                 return;
3717         }
3718
3719         if (valid->recptypes_magic != RECPTYPES_MAGIC) {
3720                 CtdlLogPrintf(CTDL_EMERG, "Attempt to call free_recipients() on some other data type!\n");
3721                 abort();
3722         }
3723
3724         if (valid->errormsg != NULL)            free(valid->errormsg);
3725         if (valid->recp_local != NULL)          free(valid->recp_local);
3726         if (valid->recp_internet != NULL)       free(valid->recp_internet);
3727         if (valid->recp_ignet != NULL)          free(valid->recp_ignet);
3728         if (valid->recp_room != NULL)           free(valid->recp_room);
3729         if (valid->display_recp != NULL)        free(valid->display_recp);
3730         if (valid->bounce_to != NULL)           free(valid->bounce_to);
3731         if (valid->envelope_from != NULL)       free(valid->envelope_from);
3732         free(valid);
3733 }
3734
3735
3736
3737 /*
3738  * message entry  -  mode 0 (normal)
3739  */
3740 void cmd_ent0(char *entargs)
3741 {
3742         int post = 0;
3743         char recp[SIZ];
3744         char cc[SIZ];
3745         char bcc[SIZ];
3746         char supplied_euid[128];
3747         int anon_flag = 0;
3748         int format_type = 0;
3749         char newusername[256];
3750         char newuseremail[256];
3751         struct CtdlMessage *msg;
3752         int anonymous = 0;
3753         char errmsg[SIZ];
3754         int err = 0;
3755         struct recptypes *valid = NULL;
3756         struct recptypes *valid_to = NULL;
3757         struct recptypes *valid_cc = NULL;
3758         struct recptypes *valid_bcc = NULL;
3759         char subject[SIZ];
3760         int subject_required = 0;
3761         int do_confirm = 0;
3762         long msgnum;
3763         int i, j;
3764         char buf[256];
3765         int newuseremail_ok = 0;
3766         char references[SIZ];
3767         char *ptr;
3768
3769         unbuffer_output();
3770
3771         post = extract_int(entargs, 0);
3772         extract_token(recp, entargs, 1, '|', sizeof recp);
3773         anon_flag = extract_int(entargs, 2);
3774         format_type = extract_int(entargs, 3);
3775         extract_token(subject, entargs, 4, '|', sizeof subject);
3776         extract_token(newusername, entargs, 5, '|', sizeof newusername);
3777         do_confirm = extract_int(entargs, 6);
3778         extract_token(cc, entargs, 7, '|', sizeof cc);
3779         extract_token(bcc, entargs, 8, '|', sizeof bcc);
3780         switch(CC->room.QRdefaultview) {
3781                 case VIEW_NOTES:
3782                 case VIEW_WIKI:
3783                         extract_token(supplied_euid, entargs, 9, '|', sizeof supplied_euid);
3784                         break;
3785                 default:
3786                         supplied_euid[0] = 0;
3787                         break;
3788         }
3789         extract_token(newuseremail, entargs, 10, '|', sizeof newuseremail);
3790         extract_token(references, entargs, 11, '|', sizeof references);
3791         for (ptr=references; *ptr != 0; ++ptr) {
3792                 if (*ptr == '!') *ptr = '|';
3793         }
3794
3795         /* first check to make sure the request is valid. */
3796
3797         err = CtdlDoIHavePermissionToPostInThisRoom(errmsg, sizeof errmsg, NULL, POST_LOGGED_IN);
3798         if (err)
3799         {
3800                 cprintf("%d %s\n", err, errmsg);
3801                 return;
3802         }
3803
3804         /* Check some other permission type things. */
3805
3806         if (IsEmptyStr(newusername)) {
3807                 strcpy(newusername, CC->user.fullname);
3808         }
3809         if (  (CC->user.axlevel < 6)
3810            && (strcasecmp(newusername, CC->user.fullname))
3811            && (strcasecmp(newusername, CC->cs_inet_fn))
3812         ) {
3813                 cprintf("%d You don't have permission to author messages as '%s'.\n",
3814                         ERROR + HIGHER_ACCESS_REQUIRED,
3815                         newusername
3816                 );
3817                 return;
3818         }
3819
3820
3821         if (IsEmptyStr(newuseremail)) {
3822                 newuseremail_ok = 1;
3823         }
3824
3825         if (!IsEmptyStr(newuseremail)) {
3826                 if (!strcasecmp(newuseremail, CC->cs_inet_email)) {
3827                         newuseremail_ok = 1;
3828                 }
3829                 else if (!IsEmptyStr(CC->cs_inet_other_emails)) {
3830                         j = num_tokens(CC->cs_inet_other_emails, '|');
3831                         for (i=0; i<j; ++i) {
3832                                 extract_token(buf, CC->cs_inet_other_emails, i, '|', sizeof buf);
3833                                 if (!strcasecmp(newuseremail, buf)) {
3834                                         newuseremail_ok = 1;
3835                                 }
3836                         }
3837                 }
3838         }
3839
3840         if (!newuseremail_ok) {
3841                 cprintf("%d You don't have permission to author messages as '%s'.\n",
3842                         ERROR + HIGHER_ACCESS_REQUIRED,
3843                         newuseremail
3844                 );
3845                 return;
3846         }
3847
3848         CC->cs_flags |= CS_POSTING;
3849
3850         /* In mailbox rooms we have to behave a little differently --
3851          * make sure the user has specified at least one recipient.  Then
3852          * validate the recipient(s).  We do this for the Mail> room, as
3853          * well as any room which has the "Mailbox" view set.
3854          */
3855
3856         if (  ( (CC->room.QRflags & QR_MAILBOX) && (!strcasecmp(&CC->room.QRname[11], MAILROOM)) )
3857            || ( (CC->room.QRflags & QR_MAILBOX) && (CC->curr_view == VIEW_MAILBOX) )
3858         ) {
3859                 if (CC->user.axlevel < 2) {
3860                         strcpy(recp, "sysop");
3861                         strcpy(cc, "");
3862                         strcpy(bcc, "");
3863                 }
3864
3865                 valid_to = validate_recipients(recp, NULL, 0);
3866                 if (valid_to->num_error > 0) {
3867                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_to->errormsg);
3868                         free_recipients(valid_to);
3869                         return;
3870                 }
3871
3872                 valid_cc = validate_recipients(cc, NULL, 0);
3873                 if (valid_cc->num_error > 0) {
3874                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_cc->errormsg);
3875                         free_recipients(valid_to);
3876                         free_recipients(valid_cc);
3877                         return;
3878                 }
3879
3880                 valid_bcc = validate_recipients(bcc, NULL, 0);
3881                 if (valid_bcc->num_error > 0) {
3882                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_bcc->errormsg);
3883                         free_recipients(valid_to);
3884                         free_recipients(valid_cc);
3885                         free_recipients(valid_bcc);
3886                         return;
3887                 }
3888
3889                 /* Recipient required, but none were specified */
3890                 if ( (valid_to->num_error < 0) && (valid_cc->num_error < 0) && (valid_bcc->num_error < 0) ) {
3891                         free_recipients(valid_to);
3892                         free_recipients(valid_cc);
3893                         free_recipients(valid_bcc);
3894                         cprintf("%d At least one recipient is required.\n", ERROR + NO_SUCH_USER);
3895                         return;
3896                 }
3897
3898                 if (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0) {
3899                         if (CtdlCheckInternetMailPermission(&CC->user)==0) {
3900                                 cprintf("%d You do not have permission "
3901                                         "to send Internet mail.\n",
3902                                         ERROR + HIGHER_ACCESS_REQUIRED);
3903                                 free_recipients(valid_to);
3904                                 free_recipients(valid_cc);
3905                                 free_recipients(valid_bcc);
3906                                 return;
3907                         }
3908                 }
3909
3910                 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)
3911                    && (CC->user.axlevel < 4) ) {
3912                         cprintf("%d Higher access required for network mail.\n",
3913                                 ERROR + HIGHER_ACCESS_REQUIRED);
3914                         free_recipients(valid_to);
3915                         free_recipients(valid_cc);
3916                         free_recipients(valid_bcc);
3917                         return;
3918                 }
3919
3920                 if ((RESTRICT_INTERNET == 1)
3921                     && (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0)
3922                     && ((CC->user.flags & US_INTERNET) == 0)
3923                     && (!CC->internal_pgm)) {
3924                         cprintf("%d You don't have access to Internet mail.\n",
3925                                 ERROR + HIGHER_ACCESS_REQUIRED);
3926                         free_recipients(valid_to);
3927                         free_recipients(valid_cc);
3928                         free_recipients(valid_bcc);
3929                         return;
3930                 }
3931
3932         }
3933
3934         /* Is this a room which has anonymous-only or anonymous-option? */
3935         anonymous = MES_NORMAL;
3936         if (CC->room.QRflags & QR_ANONONLY) {
3937                 anonymous = MES_ANONONLY;
3938         }
3939         if (CC->room.QRflags & QR_ANONOPT) {
3940                 if (anon_flag == 1) {   /* only if the user requested it */
3941                         anonymous = MES_ANONOPT;
3942                 }
3943         }
3944
3945         if ((CC->room.QRflags & QR_MAILBOX) == 0) {
3946                 recp[0] = 0;
3947         }
3948
3949         /* Recommend to the client that the use of a message subject is
3950          * strongly recommended in this room, if either the SUBJECTREQ flag
3951          * is set, or if there is one or more Internet email recipients.
3952          */
3953         if (CC->room.QRflags2 & QR2_SUBJECTREQ) subject_required = 1;
3954         if ((valid_to)  && (valid_to->num_internet > 0))        subject_required = 1;
3955         if ((valid_cc)  && (valid_cc->num_internet > 0))        subject_required = 1;
3956         if ((valid_bcc) && (valid_bcc->num_internet > 0))       subject_required = 1;
3957
3958         /* If we're only checking the validity of the request, return
3959          * success without creating the message.
3960          */
3961         if (post == 0) {
3962                 cprintf("%d %s|%d\n", CIT_OK,
3963                         ((valid_to != NULL) ? valid_to->display_recp : ""),
3964                         subject_required);
3965                 free_recipients(valid_to);
3966                 free_recipients(valid_cc);
3967                 free_recipients(valid_bcc);
3968                 return;
3969         }
3970
3971         /* We don't need these anymore because we'll do it differently below */
3972         free_recipients(valid_to);
3973         free_recipients(valid_cc);
3974         free_recipients(valid_bcc);
3975
3976         /* Read in the message from the client. */
3977         if (do_confirm) {
3978                 cprintf("%d send message\n", START_CHAT_MODE);
3979         } else {
3980                 cprintf("%d send message\n", SEND_LISTING);
3981         }
3982
3983         msg = CtdlMakeMessage(&CC->user, recp, cc,
3984                 CC->room.QRname, anonymous, format_type,
3985                 newusername, newuseremail, subject,
3986                 ((!IsEmptyStr(supplied_euid)) ? supplied_euid : NULL),
3987                 NULL, references);
3988
3989         /* Put together one big recipients struct containing to/cc/bcc all in
3990          * one.  This is for the envelope.
3991          */
3992         char *all_recps = malloc(SIZ * 3);
3993         strcpy(all_recps, recp);
3994         if (!IsEmptyStr(cc)) {
3995                 if (!IsEmptyStr(all_recps)) {
3996                         strcat(all_recps, ",");
3997                 }
3998                 strcat(all_recps, cc);
3999         }
4000         if (!IsEmptyStr(bcc)) {
4001                 if (!IsEmptyStr(all_recps)) {
4002                         strcat(all_recps, ",");
4003                 }
4004                 strcat(all_recps, bcc);
4005         }
4006         if (!IsEmptyStr(all_recps)) {
4007                 valid = validate_recipients(all_recps, NULL, 0);
4008         }
4009         else {
4010                 valid = NULL;
4011         }
4012         free(all_recps);
4013
4014         if (msg != NULL) {
4015                 msgnum = CtdlSubmitMsg(msg, valid, "", QP_EADDR);
4016
4017                 if (do_confirm) {
4018                         cprintf("%ld\n", msgnum);
4019                         if (msgnum >= 0L) {
4020                                 cprintf("Message accepted.\n");
4021                         }
4022                         else {
4023                                 cprintf("Internal error.\n");
4024                         }
4025                         if (msg->cm_fields['E'] != NULL) {
4026                                 cprintf("%s\n", msg->cm_fields['E']);
4027                         } else {
4028                                 cprintf("\n");
4029                         }
4030                         cprintf("000\n");
4031                 }
4032
4033                 CtdlFreeMessage(msg);
4034         }
4035         if (valid != NULL) {
4036                 free_recipients(valid);
4037         }
4038         return;
4039 }
4040
4041
4042
4043 /*
4044  * API function to delete messages which match a set of criteria
4045  * (returns the actual number of messages deleted)
4046  */
4047 int CtdlDeleteMessages(char *room_name,         /* which room */
4048                         long *dmsgnums,         /* array of msg numbers to be deleted */
4049                         int num_dmsgnums,       /* number of msgs to be deleted, or 0 for "any" */
4050                         char *content_type      /* or "" for any.  regular expressions expected. */
4051 )
4052 {
4053         struct ctdlroom qrbuf;
4054         struct cdbdata *cdbfr;
4055         long *msglist = NULL;
4056         long *dellist = NULL;
4057         int num_msgs = 0;
4058         int i, j;
4059         int num_deleted = 0;
4060         int delete_this;
4061         struct MetaData smi;
4062         regex_t re;
4063         regmatch_t pm;
4064         int need_to_free_re = 0;
4065
4066         if (content_type) if (!IsEmptyStr(content_type)) {
4067                 regcomp(&re, content_type, 0);
4068                 need_to_free_re = 1;
4069         }
4070         CtdlLogPrintf(CTDL_DEBUG, "CtdlDeleteMessages(%s, %d msgs, %s)\n",
4071                 room_name, num_dmsgnums, content_type);
4072
4073         /* get room record, obtaining a lock... */
4074         if (lgetroom(&qrbuf, room_name) != 0) {
4075                 CtdlLogPrintf(CTDL_ERR, "CtdlDeleteMessages(): Room <%s> not found\n",
4076                         room_name);
4077                 if (need_to_free_re) regfree(&re);
4078                 return (0);     /* room not found */
4079         }
4080         cdbfr = cdb_fetch(CDB_MSGLISTS, &qrbuf.QRnumber, sizeof(long));
4081
4082         if (cdbfr != NULL) {
4083                 dellist = malloc(cdbfr->len);
4084                 msglist = (long *) cdbfr->ptr;
4085                 cdbfr->ptr = NULL;      /* CtdlDeleteMessages() now owns this memory */
4086                 num_msgs = cdbfr->len / sizeof(long);
4087                 cdb_free(cdbfr);
4088         }
4089         if (num_msgs > 0) {
4090                 for (i = 0; i < num_msgs; ++i) {
4091                         delete_this = 0x00;
4092
4093                         /* Set/clear a bit for each criterion */
4094
4095                         /* 0 messages in the list or a null list means that we are
4096                          * interested in deleting any messages which meet the other criteria.
4097                          */
4098                         if ((num_dmsgnums == 0) || (dmsgnums == NULL)) {
4099                                 delete_this |= 0x01;
4100                         }
4101                         else {
4102                                 for (j=0; j<num_dmsgnums; ++j) {
4103                                         if (msglist[i] == dmsgnums[j]) {
4104                                                 delete_this |= 0x01;
4105                                         }
4106                                 }
4107                         }
4108
4109                         if (IsEmptyStr(content_type)) {
4110                                 delete_this |= 0x02;
4111                         } else {
4112                                 GetMetaData(&smi, msglist[i]);
4113                                 if (regexec(&re, smi.meta_content_type, 1, &pm, 0) == 0) {
4114                                         delete_this |= 0x02;
4115                                 }
4116                         }
4117
4118                         /* Delete message only if all bits are set */
4119                         if (delete_this == 0x03) {
4120                                 dellist[num_deleted++] = msglist[i];
4121                                 msglist[i] = 0L;
4122                         }
4123                 }
4124
4125                 num_msgs = sort_msglist(msglist, num_msgs);
4126                 cdb_store(CDB_MSGLISTS, &qrbuf.QRnumber, (int)sizeof(long),
4127                           msglist, (int)(num_msgs * sizeof(long)));
4128
4129                 qrbuf.QRhighest = msglist[num_msgs - 1];
4130         }
4131         lputroom(&qrbuf);
4132
4133         /* Go through the messages we pulled out of the index, and decrement
4134          * their reference counts by 1.  If this is the only room the message
4135          * was in, the reference count will reach zero and the message will
4136          * automatically be deleted from the database.  We do this in a
4137          * separate pass because there might be plug-in hooks getting called,
4138          * and we don't want that happening during an S_ROOMS critical
4139          * section.
4140          */
4141         if (num_deleted) for (i=0; i<num_deleted; ++i) {
4142                 PerformDeleteHooks(qrbuf.QRname, dellist[i]);
4143                 AdjRefCount(dellist[i], -1);
4144         }
4145
4146         /* Now free the memory we used, and go away. */
4147         if (msglist != NULL) free(msglist);
4148         if (dellist != NULL) free(dellist);
4149         CtdlLogPrintf(CTDL_DEBUG, "%d message(s) deleted.\n", num_deleted);
4150         if (need_to_free_re) regfree(&re);
4151         return (num_deleted);
4152 }
4153
4154
4155
4156 /*
4157  * Check whether the current user has permission to delete messages from
4158  * the current room (returns 1 for yes, 0 for no)
4159  */
4160 int CtdlDoIHavePermissionToDeleteMessagesFromThisRoom(void) {
4161         int ra;
4162         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
4163         if (ra & UA_DELETEALLOWED) return(1);
4164         return(0);
4165 }
4166
4167
4168
4169
4170 /*
4171  * Delete message from current room
4172  */
4173 void cmd_dele(char *args)
4174 {
4175         int num_deleted;
4176         int i;
4177         char msgset[SIZ];
4178         char msgtok[32];
4179         long *msgs;
4180         int num_msgs = 0;
4181
4182         extract_token(msgset, args, 0, '|', sizeof msgset);
4183         num_msgs = num_tokens(msgset, ',');
4184         if (num_msgs < 1) {
4185                 cprintf("%d Nothing to do.\n", CIT_OK);
4186                 return;
4187         }
4188
4189         if (CtdlDoIHavePermissionToDeleteMessagesFromThisRoom() == 0) {
4190                 cprintf("%d Higher access required.\n",
4191                         ERROR + HIGHER_ACCESS_REQUIRED);
4192                 return;
4193         }
4194
4195         /*
4196          * Build our message set to be moved/copied
4197          */
4198         msgs = malloc(num_msgs * sizeof(long));
4199         for (i=0; i<num_msgs; ++i) {
4200                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4201                 msgs[i] = atol(msgtok);
4202         }
4203
4204         num_deleted = CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4205         free(msgs);
4206
4207         if (num_deleted) {
4208                 cprintf("%d %d message%s deleted.\n", CIT_OK,
4209                         num_deleted, ((num_deleted != 1) ? "s" : ""));
4210         } else {
4211                 cprintf("%d Message not found.\n", ERROR + MESSAGE_NOT_FOUND);
4212         }
4213 }
4214
4215
4216
4217
4218 /*
4219  * move or copy a message to another room
4220  */
4221 void cmd_move(char *args)
4222 {
4223         char msgset[SIZ];
4224         char msgtok[32];
4225         long *msgs;
4226         int num_msgs = 0;
4227
4228         char targ[ROOMNAMELEN];
4229         struct ctdlroom qtemp;
4230         int err;
4231         int is_copy = 0;
4232         int ra;
4233         int permit = 0;
4234         int i;
4235
4236         extract_token(msgset, args, 0, '|', sizeof msgset);
4237         num_msgs = num_tokens(msgset, ',');
4238         if (num_msgs < 1) {
4239                 cprintf("%d Nothing to do.\n", CIT_OK);
4240                 return;
4241         }
4242
4243         extract_token(targ, args, 1, '|', sizeof targ);
4244         convert_room_name_macros(targ, sizeof targ);
4245         targ[ROOMNAMELEN - 1] = 0;
4246         is_copy = extract_int(args, 2);
4247
4248         if (getroom(&qtemp, targ) != 0) {
4249                 cprintf("%d '%s' does not exist.\n", ERROR + ROOM_NOT_FOUND, targ);
4250                 return;
4251         }
4252
4253         if (!strcasecmp(qtemp.QRname, CC->room.QRname)) {
4254                 cprintf("%d Source and target rooms are the same.\n", ERROR + ALREADY_EXISTS);
4255                 return;
4256         }
4257
4258         getuser(&CC->user, CC->curr_user);
4259         CtdlRoomAccess(&qtemp, &CC->user, &ra, NULL);
4260
4261         /* Check for permission to perform this operation.
4262          * Remember: "CC->room" is source, "qtemp" is target.
4263          */
4264         permit = 0;
4265
4266         /* Aides can move/copy */
4267         if (CC->user.axlevel >= 6) permit = 1;
4268
4269         /* Room aides can move/copy */
4270         if (CC->user.usernum == CC->room.QRroomaide) permit = 1;
4271
4272         /* Permit move/copy from personal rooms */
4273         if ((CC->room.QRflags & QR_MAILBOX)
4274            && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
4275
4276         /* Permit only copy from public to personal room */
4277         if ( (is_copy)
4278            && (!(CC->room.QRflags & QR_MAILBOX))
4279            && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
4280
4281         /* Permit message removal from collaborative delete rooms */
4282         if (CC->room.QRflags2 & QR2_COLLABDEL) permit = 1;
4283
4284         /* Users allowed to post into the target room may move into it too. */
4285         if ((CC->room.QRflags & QR_MAILBOX) &&
4286             (qtemp.QRflags & UA_POSTALLOWED))  permit = 1;
4287
4288         /* User must have access to target room */
4289         if (!(ra & UA_KNOWN))  permit = 0;
4290
4291         if (!permit) {
4292                 cprintf("%d Higher access required.\n",
4293                         ERROR + HIGHER_ACCESS_REQUIRED);
4294                 return;
4295         }
4296
4297         /*
4298          * Build our message set to be moved/copied
4299          */
4300         msgs = malloc(num_msgs * sizeof(long));
4301         for (i=0; i<num_msgs; ++i) {
4302                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4303                 msgs[i] = atol(msgtok);
4304         }
4305
4306         /*
4307          * Do the copy
4308          */
4309         err = CtdlSaveMsgPointersInRoom(targ, msgs, num_msgs, 1, NULL);
4310         if (err != 0) {
4311                 cprintf("%d Cannot store message(s) in %s: error %d\n",
4312                         err, targ, err);
4313                 free(msgs);
4314                 return;
4315         }
4316
4317         /* Now delete the message from the source room,
4318          * if this is a 'move' rather than a 'copy' operation.
4319          */
4320         if (is_copy == 0) {
4321                 CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4322         }
4323         free(msgs);
4324
4325         cprintf("%d Message(s) %s.\n", CIT_OK, (is_copy ? "copied" : "moved") );
4326 }
4327
4328
4329
4330 /*
4331  * GetMetaData()  -  Get the supplementary record for a message
4332  */
4333 void GetMetaData(struct MetaData *smibuf, long msgnum)
4334 {
4335
4336         struct cdbdata *cdbsmi;
4337         long TheIndex;
4338
4339         memset(smibuf, 0, sizeof(struct MetaData));
4340         smibuf->meta_msgnum = msgnum;
4341         smibuf->meta_refcount = 1;      /* Default reference count is 1 */
4342
4343         /* Use the negative of the message number for its supp record index */
4344         TheIndex = (0L - msgnum);
4345
4346         cdbsmi = cdb_fetch(CDB_MSGMAIN, &TheIndex, sizeof(long));
4347         if (cdbsmi == NULL) {
4348                 return;         /* record not found; go with defaults */
4349         }
4350         memcpy(smibuf, cdbsmi->ptr,
4351                ((cdbsmi->len > sizeof(struct MetaData)) ?
4352                 sizeof(struct MetaData) : cdbsmi->len));
4353         cdb_free(cdbsmi);
4354         return;
4355 }
4356
4357
4358 /*
4359  * PutMetaData()  -  (re)write supplementary record for a message
4360  */
4361 void PutMetaData(struct MetaData *smibuf)
4362 {
4363         long TheIndex;
4364
4365         /* Use the negative of the message number for the metadata db index */
4366         TheIndex = (0L - smibuf->meta_msgnum);
4367
4368         cdb_store(CDB_MSGMAIN,
4369                   &TheIndex, (int)sizeof(long),
4370                   smibuf, (int)sizeof(struct MetaData));
4371
4372 }
4373
4374 /*
4375  * AdjRefCount  -  submit an adjustment to the reference count for a message.
4376  *                 (These are just queued -- we actually process them later.)
4377  */
4378 void AdjRefCount(long msgnum, int incr)
4379 {
4380         struct arcq new_arcq;
4381         int rv = 0;
4382
4383         begin_critical_section(S_SUPPMSGMAIN);
4384         if (arcfp == NULL) {
4385                 arcfp = fopen(file_arcq, "ab+");
4386         }
4387         end_critical_section(S_SUPPMSGMAIN);
4388
4389         /* msgnum < 0 means that we're trying to close the file */
4390         if (msgnum < 0) {
4391                 CtdlLogPrintf(CTDL_DEBUG, "Closing the AdjRefCount queue file\n");
4392                 begin_critical_section(S_SUPPMSGMAIN);
4393                 if (arcfp != NULL) {
4394                         fclose(arcfp);
4395                         arcfp = NULL;
4396                 }
4397                 end_critical_section(S_SUPPMSGMAIN);
4398                 return;
4399         }
4400
4401         /*
4402          * If we can't open the queue, perform the operation synchronously.
4403          */
4404         if (arcfp == NULL) {
4405                 TDAP_AdjRefCount(msgnum, incr);
4406                 return;
4407         }
4408
4409         new_arcq.arcq_msgnum = msgnum;
4410         new_arcq.arcq_delta = incr;
4411         rv = fwrite(&new_arcq, sizeof(struct arcq), 1, arcfp);
4412         fflush(arcfp);
4413
4414         return;
4415 }
4416
4417
4418 /*
4419  * TDAP_ProcessAdjRefCountQueue()
4420  *
4421  * Process the queue of message count adjustments that was created by calls
4422  * to AdjRefCount() ... by reading the queue and calling TDAP_AdjRefCount()
4423  * for each one.  This should be an "off hours" operation.
4424  */
4425 int TDAP_ProcessAdjRefCountQueue(void)
4426 {
4427         char file_arcq_temp[PATH_MAX];
4428         int r;
4429         FILE *fp;
4430         struct arcq arcq_rec;
4431         int num_records_processed = 0;
4432
4433         snprintf(file_arcq_temp, sizeof file_arcq_temp, "%s.%04x", file_arcq, rand());
4434
4435         begin_critical_section(S_SUPPMSGMAIN);
4436         if (arcfp != NULL) {
4437                 fclose(arcfp);
4438                 arcfp = NULL;
4439         }
4440
4441         r = link(file_arcq, file_arcq_temp);
4442         if (r != 0) {
4443                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4444                 end_critical_section(S_SUPPMSGMAIN);
4445                 return(num_records_processed);
4446         }
4447
4448         unlink(file_arcq);
4449         end_critical_section(S_SUPPMSGMAIN);
4450
4451         fp = fopen(file_arcq_temp, "rb");
4452         if (fp == NULL) {
4453                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4454                 return(num_records_processed);
4455         }
4456
4457         while (fread(&arcq_rec, sizeof(struct arcq), 1, fp) == 1) {
4458                 TDAP_AdjRefCount(arcq_rec.arcq_msgnum, arcq_rec.arcq_delta);
4459                 ++num_records_processed;
4460         }
4461
4462         fclose(fp);
4463         r = unlink(file_arcq_temp);
4464         if (r != 0) {
4465                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4466         }
4467
4468         return(num_records_processed);
4469 }
4470
4471
4472
4473 /*
4474  * TDAP_AdjRefCount  -  adjust the reference count for a message.
4475  *                      This one does it "for real" because it's called by
4476  *                      the autopurger function that processes the queue
4477  *                      created by AdjRefCount().   If a message's reference
4478  *                      count becomes zero, we also delete the message from
4479  *                      disk and de-index it.
4480  */
4481 void TDAP_AdjRefCount(long msgnum, int incr)
4482 {
4483
4484         struct MetaData smi;
4485         long delnum;
4486
4487         /* This is a *tight* critical section; please keep it that way, as
4488          * it may get called while nested in other critical sections.
4489          * Complicating this any further will surely cause deadlock!
4490          */
4491         begin_critical_section(S_SUPPMSGMAIN);
4492         GetMetaData(&smi, msgnum);
4493         smi.meta_refcount += incr;
4494         PutMetaData(&smi);
4495         end_critical_section(S_SUPPMSGMAIN);
4496         CtdlLogPrintf(CTDL_DEBUG, "msg %ld ref count delta %+d, is now %d\n",
4497                 msgnum, incr, smi.meta_refcount);
4498
4499         /* If the reference count is now zero, delete the message
4500          * (and its supplementary record as well).
4501          */
4502         if (smi.meta_refcount == 0) {
4503                 CtdlLogPrintf(CTDL_DEBUG, "Deleting message <%ld>\n", msgnum);
4504
4505                 /* Call delete hooks with NULL room to show it has gone altogether */
4506                 PerformDeleteHooks(NULL, msgnum);
4507
4508                 /* Remove from message base */
4509                 delnum = msgnum;
4510                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
4511                 cdb_delete(CDB_BIGMSGS, &delnum, (int)sizeof(long));
4512
4513                 /* Remove metadata record */
4514                 delnum = (0L - msgnum);
4515                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
4516         }
4517
4518 }
4519
4520 /*
4521  * Write a generic object to this room
4522  *
4523  * Note: this could be much more efficient.  Right now we use two temporary
4524  * files, and still pull the message into memory as with all others.
4525  */
4526 void CtdlWriteObject(char *req_room,                    /* Room to stuff it in */
4527                         char *content_type,             /* MIME type of this object */
4528                         char *raw_message,              /* Data to be written */
4529                         off_t raw_length,               /* Size of raw_message */
4530                         struct ctdluser *is_mailbox,    /* Mailbox room? */
4531                         int is_binary,                  /* Is encoding necessary? */
4532                         int is_unique,                  /* Del others of this type? */
4533                         unsigned int flags              /* Internal save flags */
4534                         )
4535 {
4536
4537         struct ctdlroom qrbuf;
4538         char roomname[ROOMNAMELEN];
4539         struct CtdlMessage *msg;
4540         char *encoded_message = NULL;
4541
4542         if (is_mailbox != NULL) {
4543                 MailboxName(roomname, sizeof roomname, is_mailbox, req_room);
4544         }
4545         else {
4546                 safestrncpy(roomname, req_room, sizeof(roomname));
4547         }
4548
4549         CtdlLogPrintf(CTDL_DEBUG, "Raw length is %ld\n", (long)raw_length);
4550
4551         if (is_binary) {
4552                 encoded_message = malloc((size_t) (((raw_length * 134) / 100) + 4096 ) );
4553         }
4554         else {
4555                 encoded_message = malloc((size_t)(raw_length + 4096));
4556         }
4557
4558         sprintf(encoded_message, "Content-type: %s\n", content_type);
4559
4560         if (is_binary) {
4561                 sprintf(&encoded_message[strlen(encoded_message)],
4562                         "Content-transfer-encoding: base64\n\n"
4563                 );
4564         }
4565         else {
4566                 sprintf(&encoded_message[strlen(encoded_message)],
4567                         "Content-transfer-encoding: 7bit\n\n"
4568                 );
4569         }
4570
4571         if (is_binary) {
4572                 CtdlEncodeBase64(
4573                         &encoded_message[strlen(encoded_message)],
4574                         raw_message,
4575                         (int)raw_length,
4576                         0
4577                 );
4578         }
4579         else {
4580                 memcpy(
4581                         &encoded_message[strlen(encoded_message)],
4582                         raw_message,
4583                         (int)(raw_length+1)
4584                 );
4585         }
4586
4587         CtdlLogPrintf(CTDL_DEBUG, "Allocating\n");
4588         msg = malloc(sizeof(struct CtdlMessage));
4589         memset(msg, 0, sizeof(struct CtdlMessage));
4590         msg->cm_magic = CTDLMESSAGE_MAGIC;
4591         msg->cm_anon_type = MES_NORMAL;
4592         msg->cm_format_type = 4;
4593         msg->cm_fields['A'] = strdup(CC->user.fullname);
4594         msg->cm_fields['O'] = strdup(req_room);
4595         msg->cm_fields['N'] = strdup(config.c_nodename);
4596         msg->cm_fields['H'] = strdup(config.c_humannode);
4597         msg->cm_flags = flags;
4598
4599         msg->cm_fields['M'] = encoded_message;
4600
4601         /* Create the requested room if we have to. */
4602         if (getroom(&qrbuf, roomname) != 0) {
4603                 create_room(roomname,
4604                         ( (is_mailbox != NULL) ? 5 : 3 ),
4605                         "", 0, 1, 0, VIEW_BBS);
4606         }
4607         /* If the caller specified this object as unique, delete all
4608          * other objects of this type that are currently in the room.
4609          */
4610         if (is_unique) {
4611                 CtdlLogPrintf(CTDL_DEBUG, "Deleted %d other msgs of this type\n",
4612                         CtdlDeleteMessages(roomname, NULL, 0, content_type)
4613                 );
4614         }
4615         /* Now write the data */
4616         CtdlSubmitMsg(msg, NULL, roomname, 0);
4617         CtdlFreeMessage(msg);
4618 }
4619
4620
4621
4622
4623
4624
4625 void CtdlGetSysConfigBackend(long msgnum, void *userdata) {
4626         config_msgnum = msgnum;
4627 }
4628
4629
4630 char *CtdlGetSysConfig(char *sysconfname) {
4631         char hold_rm[ROOMNAMELEN];
4632         long msgnum;
4633         char *conf;
4634         struct CtdlMessage *msg;
4635         char buf[SIZ];
4636
4637         strcpy(hold_rm, CC->room.QRname);
4638         if (getroom(&CC->room, SYSCONFIGROOM) != 0) {
4639                 getroom(&CC->room, hold_rm);
4640                 return NULL;
4641         }
4642
4643
4644         /* We want the last (and probably only) config in this room */
4645         begin_critical_section(S_CONFIG);
4646         config_msgnum = (-1L);
4647         CtdlForEachMessage(MSGS_LAST, 1, NULL, sysconfname, NULL,
4648                 CtdlGetSysConfigBackend, NULL);
4649         msgnum = config_msgnum;
4650         end_critical_section(S_CONFIG);
4651
4652         if (msgnum < 0L) {
4653                 conf = NULL;
4654         }
4655         else {
4656                 msg = CtdlFetchMessage(msgnum, 1);
4657                 if (msg != NULL) {
4658                         conf = strdup(msg->cm_fields['M']);
4659                         CtdlFreeMessage(msg);
4660                 }
4661                 else {
4662                         conf = NULL;
4663                 }
4664         }
4665
4666         getroom(&CC->room, hold_rm);
4667
4668         if (conf != NULL) do {
4669                 extract_token(buf, conf, 0, '\n', sizeof buf);
4670                 strcpy(conf, &conf[strlen(buf)+1]);
4671         } while ( (!IsEmptyStr(conf)) && (!IsEmptyStr(buf)) );
4672
4673         return(conf);
4674 }
4675
4676
4677 void CtdlPutSysConfig(char *sysconfname, char *sysconfdata) {
4678         CtdlWriteObject(SYSCONFIGROOM, sysconfname, sysconfdata, (strlen(sysconfdata)+1), NULL, 0, 1, 0);
4679 }
4680
4681
4682 /*
4683  * Determine whether a given Internet address belongs to the current user
4684  */
4685 int CtdlIsMe(char *addr, int addr_buf_len)
4686 {
4687         struct recptypes *recp;
4688         int i;
4689
4690         recp = validate_recipients(addr, NULL, 0);
4691         if (recp == NULL) return(0);
4692
4693         if (recp->num_local == 0) {
4694                 free_recipients(recp);
4695                 return(0);
4696         }
4697
4698         for (i=0; i<recp->num_local; ++i) {
4699                 extract_token(addr, recp->recp_local, i, '|', addr_buf_len);
4700                 if (!strcasecmp(addr, CC->user.fullname)) {
4701                         free_recipients(recp);
4702                         return(1);
4703                 }
4704         }
4705
4706         free_recipients(recp);
4707         return(0);
4708 }
4709
4710
4711 /*
4712  * Citadel protocol command to do the same
4713  */
4714 void cmd_isme(char *argbuf) {
4715         char addr[256];
4716
4717         if (CtdlAccessCheck(ac_logged_in)) return;
4718         extract_token(addr, argbuf, 0, '|', sizeof addr);
4719
4720         if (CtdlIsMe(addr, sizeof addr)) {
4721                 cprintf("%d %s\n", CIT_OK, addr);
4722         }
4723         else {
4724                 cprintf("%d Not you.\n", ERROR + ILLEGAL_VALUE);
4725         }
4726
4727 }
4728
4729
4730 /*****************************************************************************/
4731 /*                      MODULE INITIALIZATION STUFF                          */
4732 /*****************************************************************************/
4733
4734 CTDL_MODULE_INIT(msgbase)
4735 {
4736         CtdlRegisterProtoHook(cmd_msgs, "MSGS", "Output a list of messages in the current room");
4737         CtdlRegisterProtoHook(cmd_msg0, "MSG0", "Output a message in plain text format");
4738         CtdlRegisterProtoHook(cmd_msg2, "MSG2", "Output a message in RFC822 format");
4739         CtdlRegisterProtoHook(cmd_msg3, "MSG3", "Output a message in raw format (deprecated)");
4740         CtdlRegisterProtoHook(cmd_msg4, "MSG4", "Output a message in the client's preferred format");
4741         CtdlRegisterProtoHook(cmd_msgp, "MSGP", "Select preferred format for MSG4 output");
4742         CtdlRegisterProtoHook(cmd_opna, "OPNA", "Open an attachment for download");
4743         CtdlRegisterProtoHook(cmd_dlat, "DLAT", "Download an attachment");
4744         CtdlRegisterProtoHook(cmd_ent0, "ENT0", "Enter a message");
4745         CtdlRegisterProtoHook(cmd_dele, "DELE", "Delete a message");
4746         CtdlRegisterProtoHook(cmd_move, "MOVE", "Move or copy a message to another room");
4747         CtdlRegisterProtoHook(cmd_isme, "ISME", "Determine whether an email address belongs to a user");
4748
4749         /* return our Subversion id for the Log */
4750         return "$Id$";
4751 }