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                 /* CtdlLogPrintf(CTDL_DEBUG, "Token: '%s'\n", ChrPtr(setstr));  NOTE ZERO-LENGTH TOKENS */
 429
 430                 StrBufExtract_token(lostr, setstr, 0, ':');
 431                 if (StrBufNum_tokens(setstr, ':') >= 2) {
 432                         StrBufExtract_token(histr, setstr, 1, ':');
 433                 }
 434                 else {
 435                         FlushStrBuf(histr);
 436                         StrBufAppendBuf(histr, lostr, 0);
 437                 }
 438                 lo = StrTol(lostr);
 439                 if (!strcmp(ChrPtr(histr), "*")) {
 440                         hi = LONG_MAX;
 441                 }
 442                 else {
 443                         hi = StrTol(histr);
 444                 }
 445
 446                 for (i = 0; i < num_msgs; ++i) {
 447                         if ((msglist[i] >= lo) && (msglist[i] <= hi)) {
 448                                 is_set[i] = 1;
 449                         }
 450                 }
 451         }
 452         FreeStrBuf(&setstr);
 453         FreeStrBuf(&lostr);
 454         FreeStrBuf(&histr);
 455
 456
 457         /* Now translate the array of booleans back into a sequence set */
 458         FlushStrBuf(vset);
 459         was_seen = 0;
 460         lo = (-1);
 461         hi = (-1);
 462
 463         for (i=0; i<num_msgs; ++i) {
 464                 is_seen = is_set[i];
 465
 466                 /* Apply changes */
 467                 for (k=0; k<num_target_msgnums; ++k) {
 468                         if (msglist[i] == target_msgnums[k]) {
 469                                 is_seen = target_setting;
 470                         }
 471                 }
 472
 473                 w = 0;  /* set to 1 if we write something to the string */
 474
 475                 if ((was_seen == 0) && (is_seen == 1)) {
 476                         lo = msglist[i];
 477                 }
 478                 else if ((was_seen == 1) && (is_seen == 0)) {
 479                         hi = msglist[i-1];
 480                         w = 1;
 481
 482                         if (StrLength(vset) > 0) {
 483                                 StrBufAppendBufPlain(vset, HKEY(","), 0);
 484                         }
 485                         if (lo == hi) {
 486                                 StrBufAppendPrintf(vset, "%ld", hi);
 487                         }
 488                         else {
 489                                 StrBufAppendPrintf(vset, "%ld:%ld", lo, hi);
 490                         }
 491                 }
 492                 else if ((is_seen) && (i == num_msgs - 1)) {
 493                         w = 1;
 494                         if (StrLength(vset) > 0) {
 495                                 StrBufAppendBufPlain(vset, HKEY(","), 0);
 496                         }
 497                         if ((i==0) || (was_seen == 0)) {
 498                                 StrBufAppendPrintf(vset, "%ld", msglist[i]);
 499                         }
 500                         else {
 501                                 StrBufAppendPrintf(vset, "%ld:%ld", lo, msglist[i]);
 502                         }
 503                 }
 504
 505                 /* If the string is getting too long, truncate it at the beginning; repeat up to 9 times * /
 506                 if (w) for (j=0; j<9; ++j) {
 507                         if ((StrLength(vset) + 20) > sizeof vset) {
 508                                 remove_token(vset, 0, ',');
 509                                 if (which_set == ctdlsetseen_seen) {
 510                                         char temp[SIZ];
 511                                         sprintf(temp, "1:%ld,", atol(vset)-1L);
 512                                         strcat(temp, vset);
 513                                         strcpy(vset, temp);
 514                                 }
 515                         }
 516                 }
 517                 we don't get to long anymore.
 518                 */
 519
 520                 was_seen = is_seen;
 521         }
 522
 523         while (StrLength(vset) > SIZ)
 524                 StrBufRemove_token(vset, 0, ',');
 525
 526         CtdlLogPrintf(CTDL_DEBUG, " after update: %s\n", ChrPtr(vset));
 527
 528         /* Decide which message set we're manipulating */
 529         switch (which_set) {
 530                 case ctdlsetseen_seen:
 531                         safestrncpy(vbuf.v_seen, ChrPtr(vset), sizeof vbuf.v_seen);
 532                         break;
 533                 case ctdlsetseen_answered:
 534                         safestrncpy(vbuf.v_answered, ChrPtr(vset), sizeof vbuf.v_answered);
 535                         break;
 536         }
 537
 538         free(is_set);
 539         free(msglist);
 540         CtdlSetRelationship(&vbuf, which_user, which_room);
 541         FreeStrBuf(&vset);
 542 }
 543
 544
 545 /*
 546  * API function to perform an operation for each qualifying message in the
 547  * current room.  (Returns the number of messages processed.)
 548  */
 549 int CtdlForEachMessage(int mode, long ref, char *search_string,
 550                         char *content_type,
 551                         struct CtdlMessage *compare,
 552                         void (*CallBack) (long, void *),
 553                         void *userdata)
 554 {
 555
 556         int a, i, j;
 557         struct visit vbuf;
 558         struct cdbdata *cdbfr;
 559         long *msglist = NULL;
 560         int num_msgs = 0;
 561         int num_processed = 0;
 562         long thismsg;
 563         struct MetaData smi;
 564         struct CtdlMessage *msg = NULL;
 565         int is_seen = 0;
 566         long lastold = 0L;
 567         int printed_lastold = 0;
 568         int num_search_msgs = 0;
 569         long *search_msgs = NULL;
 570         regex_t re;
 571         int need_to_free_re = 0;
 572         regmatch_t pm;
 573
 574         if ((content_type) && (!IsEmptyStr(content_type))) {
 575                 regcomp(&re, content_type, 0);
 576                 need_to_free_re = 1;
 577         }
 578
 579         /* Learn about the user and room in question */
 580         getuser(&CC->user, CC->curr_user);
 581         CtdlGetRelationship(&vbuf, &CC->user, &CC->room);
 582
 583         /* Load the message list */
 584         cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
 585         if (cdbfr != NULL) {
 586                 msglist = (long *) cdbfr->ptr;
 587                 num_msgs = cdbfr->len / sizeof(long);
 588         } else {
 589                 if (need_to_free_re) regfree(&re);
 590                 return 0;       /* No messages at all?  No further action. */
 591         }
 592
 593
 594         /*
 595          * Now begin the traversal.
 596          */
 597         if (num_msgs > 0) for (a = 0; a < num_msgs; ++a) {
 598
 599                 /* If the caller is looking for a specific MIME type, filter
 600                  * out all messages which are not of the type requested.
 601                  */
 602                 if ((content_type != NULL) && (!IsEmptyStr(content_type))) {
 603
 604                         /* This call to GetMetaData() sits inside this loop
 605                          * so that we only do the extra database read per msg
 606                          * if we need to.  Doing the extra read all the time
 607                          * really kills the server.  If we ever need to use
 608                          * metadata for another search criterion, we need to
 609                          * move the read somewhere else -- but still be smart
 610                          * enough to only do the read if the caller has
 611                          * specified something that will need it.
 612                          */
 613                         GetMetaData(&smi, msglist[a]);
 614
 615                         /* if (strcasecmp(smi.meta_content_type, content_type)) { old non-regex way */
 616                         if (regexec(&re, smi.meta_content_type, 1, &pm, 0) != 0) {
 617                                 msglist[a] = 0L;
 618                         }
 619                 }
 620         }
 621
 622         num_msgs = sort_msglist(msglist, num_msgs);
 623
 624         /* If a template was supplied, filter out the messages which
 625          * don't match.  (This could induce some delays!)
 626          */
 627         if (num_msgs > 0) {
 628                 if (compare != NULL) {
 629                         for (a = 0; a < num_msgs; ++a) {
 630                                 msg = CtdlFetchMessage(msglist[a], 1);
 631                                 if (msg != NULL) {
 632                                         if (CtdlMsgCmp(msg, compare)) {
 633                                                 msglist[a] = 0L;
 634                                         }
 635                                         CtdlFreeMessage(msg);
 636                                 }
 637                         }
 638                 }
 639         }
 640
 641         /* If a search string was specified, get a message list from
 642          * the full text index and remove messages which aren't on both
 643          * lists.
 644          *
 645          * How this works:
 646          * Since the lists are sorted and strictly ascending, and the
 647          * output list is guaranteed to be shorter than or equal to the
 648          * input list, we overwrite the bottom of the input list.  This
 649          * eliminates the need to memmove big chunks of the list over and
 650          * over again.
 651          */
 652         if ( (num_msgs > 0) && (mode == MSGS_SEARCH) && (search_string) ) {
 653
 654                 /* Call search module via hook mechanism.
 655                  * NULL means use any search function available.
 656                  * otherwise replace with a char * to name of search routine
 657                  */
 658                 CtdlModuleDoSearch(&num_search_msgs, &search_msgs, search_string, "fulltext");
 659
 660                 if (num_search_msgs > 0) {
 661
 662                         int orig_num_msgs;
 663
 664                         orig_num_msgs = num_msgs;
 665                         num_msgs = 0;
 666                         for (i=0; i<orig_num_msgs; ++i) {
 667                                 for (j=0; j<num_search_msgs; ++j) {
 668                                         if (msglist[i] == search_msgs[j]) {
 669                                                 msglist[num_msgs++] = msglist[i];
 670                                         }
 671                                 }
 672                         }
 673                 }
 674                 else {
 675                         num_msgs = 0;   /* No messages qualify */
 676                 }
 677                 if (search_msgs != NULL) free(search_msgs);
 678
 679                 /* Now that we've purged messages which don't contain the search
 680                  * string, treat a MSGS_SEARCH just like a MSGS_ALL from this
 681                  * point on.
 682                  */
 683                 mode = MSGS_ALL;
 684         }
 685
 686         /*
 687          * Now iterate through the message list, according to the
 688          * criteria supplied by the caller.
 689          */
 690         if (num_msgs > 0)
 691                 for (a = 0; a < num_msgs; ++a) {
 692                         thismsg = msglist[a];
 693                         if (mode == MSGS_ALL) {
 694                                 is_seen = 0;
 695                         }
 696                         else {
 697                                 is_seen = is_msg_in_sequence_set(
 698                                                         vbuf.v_seen, thismsg);
 699                                 if (is_seen) lastold = thismsg;
 700                         }
 701                         if ((thismsg > 0L)
 702                             && (
 703
 704                                        (mode == MSGS_ALL)
 705                                        || ((mode == MSGS_OLD) && (is_seen))
 706                                        || ((mode == MSGS_NEW) && (!is_seen))
 707                                        || ((mode == MSGS_LAST) && (a >= (num_msgs - ref)))
 708                                    || ((mode == MSGS_FIRST) && (a < ref))
 709                                 || ((mode == MSGS_GT) && (thismsg > ref))
 710                                 || ((mode == MSGS_EQ) && (thismsg == ref))
 711                             )
 712                             ) {
 713                                 if ((mode == MSGS_NEW) && (CC->user.flags & US_LASTOLD) && (lastold > 0L) && (printed_lastold == 0) && (!is_seen)) {
 714                                         if (CallBack)
 715                                                 CallBack(lastold, userdata);
 716                                         printed_lastold = 1;
 717                                         ++num_processed;
 718                                 }
 719                                 if (CallBack) CallBack(thismsg, userdata);
 720                                 ++num_processed;
 721                         }
 722                 }
 723         cdb_free(cdbfr);        /* Clean up */
 724         if (need_to_free_re) regfree(&re);
 725         return num_processed;
 726 }
 727
 728
 729
 730 /*
 731  * cmd_msgs()  -  get list of message #'s in this room
 732  *              implements the MSGS server command using CtdlForEachMessage()
 733  */
 734 void cmd_msgs(char *cmdbuf)
 735 {
 736         int mode = 0;
 737         char which[16];
 738         char buf[256];
 739         char tfield[256];
 740         char tvalue[256];
 741         int cm_ref = 0;
 742         int i;
 743         int with_template = 0;
 744         struct CtdlMessage *template = NULL;
 745         int with_headers = 0;
 746         char search_string[1024];
 747
 748         extract_token(which, cmdbuf, 0, '|', sizeof which);
 749         cm_ref = extract_int(cmdbuf, 1);
 750         extract_token(search_string, cmdbuf, 1, '|', sizeof search_string);
 751         with_template = extract_int(cmdbuf, 2);
 752         with_headers = extract_int(cmdbuf, 3);
 753
 754         strcat(which, "   ");
 755         if (!strncasecmp(which, "OLD", 3))
 756                 mode = MSGS_OLD;
 757         else if (!strncasecmp(which, "NEW", 3))
 758                 mode = MSGS_NEW;
 759         else if (!strncasecmp(which, "FIRST", 5))
 760                 mode = MSGS_FIRST;
 761         else if (!strncasecmp(which, "LAST", 4))
 762                 mode = MSGS_LAST;
 763         else if (!strncasecmp(which, "GT", 2))
 764                 mode = MSGS_GT;
 765         else if (!strncasecmp(which, "SEARCH", 6))
 766                 mode = MSGS_SEARCH;
 767         else
 768                 mode = MSGS_ALL;
 769
 770         if ((!(CC->logged_in)) && (!(CC->internal_pgm))) {
 771                 cprintf("%d not logged in\n", ERROR + NOT_LOGGED_IN);
 772                 return;
 773         }
 774
 775         if ( (mode == MSGS_SEARCH) && (!config.c_enable_fulltext) ) {
 776                 cprintf("%d Full text index is not enabled on this server.\n",
 777                         ERROR + CMD_NOT_SUPPORTED);
 778                 return;
 779         }
 780
 781         if (with_template) {
 782                 unbuffer_output();
 783                 cprintf("%d Send template then receive message list\n",
 784                         START_CHAT_MODE);
 785                 template = (struct CtdlMessage *)
 786                         malloc(sizeof(struct CtdlMessage));
 787                 memset(template, 0, sizeof(struct CtdlMessage));
 788                 template->cm_magic = CTDLMESSAGE_MAGIC;
 789                 template->cm_anon_type = MES_NORMAL;
 790
 791                 while(client_getln(buf, sizeof buf) >= 0 && strcmp(buf,"000")) {
 792                         extract_token(tfield, buf, 0, '|', sizeof tfield);
 793                         extract_token(tvalue, buf, 1, '|', sizeof tvalue);
 794                         for (i='A'; i<='Z'; ++i) if (msgkeys[i]!=NULL) {
 795                                 if (!strcasecmp(tfield, msgkeys[i])) {
 796                                         template->cm_fields[i] =
 797                                                 strdup(tvalue);
 798                                 }
 799                         }
 800                 }
 801                 buffer_output();
 802         }
 803         else {
 804                 cprintf("%d  \n", LISTING_FOLLOWS);
 805         }
 806
 807         CtdlForEachMessage(mode,
 808                         ( (mode == MSGS_SEARCH) ? 0 : cm_ref ),
 809                         ( (mode == MSGS_SEARCH) ? search_string : NULL ),
 810                         NULL,
 811                         template,
 812                         (with_headers ? headers_listing : simple_listing),
 813                         NULL
 814         );
 815         if (template != NULL) CtdlFreeMessage(template);
 816         cprintf("000\n");
 817 }
 818
 819
 820
 821
 822 /*
 823  * help_subst()  -  support routine for help file viewer
 824  */
 825 void help_subst(char *strbuf, char *source, char *dest)
 826 {
 827         char workbuf[SIZ];
 828         int p;
 829
 830         while (p = pattern2(strbuf, source), (p >= 0)) {
 831                 strcpy(workbuf, &strbuf[p + strlen(source)]);
 832                 strcpy(&strbuf[p], dest);
 833                 strcat(strbuf, workbuf);
 834         }
 835 }
 836
 837
 838 void do_help_subst(char *buffer)
 839 {
 840         char buf2[16];
 841
 842         help_subst(buffer, "^nodename", config.c_nodename);
 843         help_subst(buffer, "^humannode", config.c_humannode);
 844         help_subst(buffer, "^fqdn", config.c_fqdn);
 845         help_subst(buffer, "^username", CC->user.fullname);
 846         snprintf(buf2, sizeof buf2, "%ld", CC->user.usernum);
 847         help_subst(buffer, "^usernum", buf2);
 848         help_subst(buffer, "^sysadm", config.c_sysadm);
 849         help_subst(buffer, "^variantname", CITADEL);
 850         snprintf(buf2, sizeof buf2, "%d", config.c_maxsessions);
 851         help_subst(buffer, "^maxsessions", buf2);
 852         help_subst(buffer, "^bbsdir", ctdl_message_dir);
 853 }
 854
 855
 856
 857 /*
 858  * memfmout()  -  Citadel text formatter and paginator.
 859  *           Although the original purpose of this routine was to format
 860  *           text to the reader's screen width, all we're really using it
 861  *           for here is to format text out to 80 columns before sending it
 862  *           to the client.  The client software may reformat it again.
 863  */
 864 void memfmout(
 865         char *mptr,             /* where are we going to get our text from? */
 866         char subst,             /* nonzero if we should do substitutions */
 867         char *nl)               /* string to terminate lines with */
 868 {
 869         int a, b, c;
 870         int real = 0;
 871         int old = 0;
 872         cit_uint8_t ch;
 873         char aaa[140];
 874         char buffer[SIZ];
 875         static int width = 80;
 876
 877         strcpy(aaa, "");
 878         old = 255;
 879         strcpy(buffer, "");
 880         c = 1;                  /* c is the current pos */
 881
 882         do {
 883                 if (subst) {
 884                         while (ch = *mptr, ((ch != 0) && (strlen(buffer) < 126))) {
 885                                 ch = *mptr++;
 886                                 buffer[strlen(buffer) + 1] = 0;
 887                                 buffer[strlen(buffer)] = ch;
 888                         }
 889
 890                         if (buffer[0] == '^')
 891                                 do_help_subst(buffer);
 892
 893                         buffer[strlen(buffer) + 1] = 0;
 894                         a = buffer[0];
 895                         strcpy(buffer, &buffer[1]);
 896                 } else {
 897                         ch = *mptr++;
 898                 }
 899
 900                 old = real;
 901                 real = ch;
 902
 903                 if (((ch == 13) || (ch == 10)) && (old != 13) && (old != 10)) {
 904                         ch = 32;
 905                 }
 906                 if (((old == 13) || (old == 10)) && (isspace(real))) {
 907                         cprintf("%s", nl);
 908                         c = 1;
 909                 }
 910                 if (ch > 32) {
 911                         if (((strlen(aaa) + c) > (width - 5)) && (strlen(aaa) > (width - 5))) {
 912                                 cprintf("%s%s", nl, aaa);
 913                                 c = strlen(aaa);
 914                                 aaa[0] = 0;
 915                         }
 916                         b = strlen(aaa);
 917                         aaa[b] = ch;
 918                         aaa[b + 1] = 0;
 919                 }
 920                 if (ch == 32) {
 921                         if ((strlen(aaa) + c) > (width - 5)) {
 922                                 cprintf("%s", nl);
 923                                 c = 1;
 924                         }
 925                         cprintf("%s ", aaa);
 926                         ++c;
 927                         c = c + strlen(aaa);
 928                         strcpy(aaa, "");
 929                 }
 930                 if ((ch == 13) || (ch == 10)) {
 931                         cprintf("%s%s", aaa, nl);
 932                         c = 1;
 933                         strcpy(aaa, "");
 934                 }
 935
 936         } while (ch > 0);
 937
 938         cprintf("%s%s", aaa, nl);
 939 }
 940
 941
 942
 943 /*
 944  * Callback function for mime parser that simply lists the part
 945  */
 946 void list_this_part(char *name, char *filename, char *partnum, char *disp,
 947                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
 948                     char *cbid, void *cbuserdata)
 949 {
 950         struct ma_info *ma;
 951
 952         ma = (struct ma_info *)cbuserdata;
 953         if (ma->is_ma == 0) {
 954                 cprintf("part=%s|%s|%s|%s|%s|%ld|%s\n",
 955                         name, filename, partnum, disp, cbtype, (long)length, cbid);
 956         }
 957 }
 958
 959 /*
 960  * Callback function for multipart prefix
 961  */
 962 void list_this_pref(char *name, char *filename, char *partnum, char *disp,
 963                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
 964                     char *cbid, void *cbuserdata)
 965 {
 966         struct ma_info *ma;
 967
 968         ma = (struct ma_info *)cbuserdata;
 969         if (!strcasecmp(cbtype, "multipart/alternative")) {
 970                 ++ma->is_ma;
 971         }
 972
 973         if (ma->is_ma == 0) {
 974                 cprintf("pref=%s|%s\n", partnum, cbtype);
 975         }
 976 }
 977
 978 /*
 979  * Callback function for multipart sufffix
 980  */
 981 void list_this_suff(char *name, char *filename, char *partnum, char *disp,
 982                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
 983                     char *cbid, void *cbuserdata)
 984 {
 985         struct ma_info *ma;
 986
 987         ma = (struct ma_info *)cbuserdata;
 988         if (ma->is_ma == 0) {
 989                 cprintf("suff=%s|%s\n", partnum, cbtype);
 990         }
 991         if (!strcasecmp(cbtype, "multipart/alternative")) {
 992                 --ma->is_ma;
 993         }
 994 }
 995
 996
 997 /*
 998  * Callback function for mime parser that opens a section for downloading
 999  */
1000 void mime_download(char *name, char *filename, char *partnum, char *disp,
1001                    void *content, char *cbtype, char *cbcharset, size_t length,
1002                    char *encoding, char *cbid, void *cbuserdata)
1003 {
1004         int rv = 0;
1005
1006         /* Silently go away if there's already a download open. */
1007         if (CC->download_fp != NULL)
1008                 return;
1009
1010         if (
1011                 (!IsEmptyStr(partnum) && (!strcasecmp(CC->download_desired_section, partnum)))
1012         ||      (!IsEmptyStr(cbid) && (!strcasecmp(CC->download_desired_section, cbid)))
1013         ) {
1014                 CC->download_fp = tmpfile();
1015                 if (CC->download_fp == NULL)
1016                         return;
1017
1018                 rv = fwrite(content, length, 1, CC->download_fp);
1019                 fflush(CC->download_fp);
1020                 rewind(CC->download_fp);
1021
1022                 OpenCmdResult(filename, cbtype);
1023         }
1024 }
1025
1026
1027
1028 /*
1029  * Callback function for mime parser that outputs a section all at once.
1030  * We can specify the desired section by part number *or* content-id.
1031  */
1032 void mime_spew_section(char *name, char *filename, char *partnum, char *disp,
1033                    void *content, char *cbtype, char *cbcharset, size_t length,
1034                    char *encoding, char *cbid, void *cbuserdata)
1035 {
1036         int *found_it = (int *)cbuserdata;
1037
1038         if (
1039                 (!IsEmptyStr(partnum) && (!strcasecmp(CC->download_desired_section, partnum)))
1040         ||      (!IsEmptyStr(cbid) && (!strcasecmp(CC->download_desired_section, cbid)))
1041         ) {
1042                 *found_it = 1;
1043                 cprintf("%d %d|-1|%s|%s\n",
1044                         BINARY_FOLLOWS,
1045                         (int)length,
1046                         filename,
1047                         cbtype
1048                 );
1049                 client_write(content, length);
1050         }
1051 }
1052
1053
1054
1055 /*
1056  * Load a message from disk into memory.
1057  * This is used by CtdlOutputMsg() and other fetch functions.
1058  *
1059  * NOTE: Caller is responsible for freeing the returned CtdlMessage struct
1060  *       using the CtdlMessageFree() function.
1061  */
1062 struct CtdlMessage *CtdlFetchMessage(long msgnum, int with_body)
1063 {
1064         struct cdbdata *dmsgtext;
1065         struct CtdlMessage *ret = NULL;
1066         char *mptr;
1067         char *upper_bound;
1068         cit_uint8_t ch;
1069         cit_uint8_t field_header;
1070
1071         CtdlLogPrintf(CTDL_DEBUG, "CtdlFetchMessage(%ld, %d)\n", msgnum, with_body);
1072
1073         dmsgtext = cdb_fetch(CDB_MSGMAIN, &msgnum, sizeof(long));
1074         if (dmsgtext == NULL) {
1075                 return NULL;
1076         }
1077         mptr = dmsgtext->ptr;
1078         upper_bound = mptr + dmsgtext->len;
1079
1080         /* Parse the three bytes that begin EVERY message on disk.
1081          * The first is always 0xFF, the on-disk magic number.
1082          * The second is the anonymous/public type byte.
1083          * The third is the format type byte (vari, fixed, or MIME).
1084          */
1085         ch = *mptr++;
1086         if (ch != 255) {
1087                 CtdlLogPrintf(CTDL_ERR, "Message %ld appears to be corrupted.\n", msgnum);
1088                 cdb_free(dmsgtext);
1089                 return NULL;
1090         }
1091         ret = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
1092         memset(ret, 0, sizeof(struct CtdlMessage));
1093
1094         ret->cm_magic = CTDLMESSAGE_MAGIC;
1095         ret->cm_anon_type = *mptr++;    /* Anon type byte */
1096         ret->cm_format_type = *mptr++;  /* Format type byte */
1097
1098         /*
1099          * The rest is zero or more arbitrary fields.  Load them in.
1100          * We're done when we encounter either a zero-length field or
1101          * have just processed the 'M' (message text) field.
1102          */
1103         do {
1104                 if (mptr >= upper_bound) {
1105                         break;
1106                 }
1107                 field_header = *mptr++;
1108                 ret->cm_fields[field_header] = strdup(mptr);
1109
1110                 while (*mptr++ != 0);   /* advance to next field */
1111
1112         } while ((mptr < upper_bound) && (field_header != 'M'));
1113
1114         cdb_free(dmsgtext);
1115
1116         /* Always make sure there's something in the msg text field.  If
1117          * it's NULL, the message text is most likely stored separately,
1118          * so go ahead and fetch that.  Failing that, just set a dummy
1119          * body so other code doesn't barf.
1120          */
1121         if ( (ret->cm_fields['M'] == NULL) && (with_body) ) {
1122                 dmsgtext = cdb_fetch(CDB_BIGMSGS, &msgnum, sizeof(long));
1123                 if (dmsgtext != NULL) {
1124                         ret->cm_fields['M'] = strdup(dmsgtext->ptr);
1125                         cdb_free(dmsgtext);
1126                 }
1127         }
1128         if (ret->cm_fields['M'] == NULL) {
1129                 ret->cm_fields['M'] = strdup("\r\n\r\n (no text)\r\n");
1130         }
1131
1132         /* Perform "before read" hooks (aborting if any return nonzero) */
1133         if (PerformMessageHooks(ret, EVT_BEFOREREAD) > 0) {
1134                 CtdlFreeMessage(ret);
1135                 return NULL;
1136         }
1137
1138         return (ret);
1139 }
1140
1141
1142 /*
1143  * Returns 1 if the supplied pointer points to a valid Citadel message.
1144  * If the pointer is NULL or the magic number check fails, returns 0.
1145  */
1146 int is_valid_message(struct CtdlMessage *msg) {
1147         if (msg == NULL)
1148                 return 0;
1149         if ((msg->cm_magic) != CTDLMESSAGE_MAGIC) {
1150                 CtdlLogPrintf(CTDL_WARNING, "is_valid_message() -- self-check failed\n");
1151                 return 0;
1152         }
1153         return 1;
1154 }
1155
1156
1157 /*
1158  * 'Destructor' for struct CtdlMessage
1159  */
1160 void CtdlFreeMessage(struct CtdlMessage *msg)
1161 {
1162         int i;
1163
1164         if (is_valid_message(msg) == 0)
1165         {
1166                 if (msg != NULL) free (msg);
1167                 return;
1168         }
1169
1170         for (i = 0; i < 256; ++i)
1171                 if (msg->cm_fields[i] != NULL) {
1172                         free(msg->cm_fields[i]);
1173                 }
1174
1175         msg->cm_magic = 0;      /* just in case */
1176         free(msg);
1177 }
1178
1179
1180 /*
1181  * Pre callback function for multipart/alternative
1182  *
1183  * NOTE: this differs from the standard behavior for a reason.  Normally when
1184  *       displaying multipart/alternative you want to show the _last_ usable
1185  *       format in the message.  Here we show the _first_ one, because it's
1186  *       usually text/plain.  Since this set of functions is designed for text
1187  *       output to non-MIME-aware clients, this is the desired behavior.
1188  *
1189  */
1190 void fixed_output_pre(char *name, char *filename, char *partnum, char *disp,
1191                 void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1192                 char *cbid, void *cbuserdata)
1193 {
1194         struct ma_info *ma;
1195
1196         ma = (struct ma_info *)cbuserdata;
1197         CtdlLogPrintf(CTDL_DEBUG, "fixed_output_pre() type=<%s>\n", cbtype);
1198         if (!strcasecmp(cbtype, "multipart/alternative")) {
1199                 ++ma->is_ma;
1200                 ma->did_print = 0;
1201         }
1202         if (!strcasecmp(cbtype, "message/rfc822")) {
1203                 ++ma->freeze;
1204         }
1205 }
1206
1207 /*
1208  * Post callback function for multipart/alternative
1209  */
1210 void fixed_output_post(char *name, char *filename, char *partnum, char *disp,
1211                 void *content, char *cbtype, char *cbcharset, size_t length,
1212                 char *encoding, char *cbid, void *cbuserdata)
1213 {
1214         struct ma_info *ma;
1215
1216         ma = (struct ma_info *)cbuserdata;
1217         CtdlLogPrintf(CTDL_DEBUG, "fixed_output_post() type=<%s>\n", cbtype);
1218         if (!strcasecmp(cbtype, "multipart/alternative")) {
1219                 --ma->is_ma;
1220                 ma->did_print = 0;
1221         }
1222         if (!strcasecmp(cbtype, "message/rfc822")) {
1223                 --ma->freeze;
1224         }
1225 }
1226
1227 /*
1228  * Inline callback function for mime parser that wants to display text
1229  */
1230 void fixed_output(char *name, char *filename, char *partnum, char *disp,
1231                 void *content, char *cbtype, char *cbcharset, size_t length,
1232                 char *encoding, char *cbid, void *cbuserdata)
1233 {
1234         char *ptr;
1235         char *wptr;
1236         size_t wlen;
1237         struct ma_info *ma;
1238
1239         ma = (struct ma_info *)cbuserdata;
1240
1241         CtdlLogPrintf(CTDL_DEBUG,
1242                 "fixed_output() part %s: %s (%s) (%ld bytes)\n",
1243                 partnum, filename, cbtype, (long)length);
1244
1245         /*
1246          * If we're in the middle of a multipart/alternative scope and
1247          * we've already printed another section, skip this one.
1248          */
1249         if ( (ma->is_ma) && (ma->did_print) ) {
1250                 CtdlLogPrintf(CTDL_DEBUG, "Skipping part %s (%s)\n", partnum, cbtype);
1251                 return;
1252         }
1253         ma->did_print = 1;
1254
1255         if ( (!strcasecmp(cbtype, "text/plain"))
1256            || (IsEmptyStr(cbtype)) ) {
1257                 wptr = content;
1258                 if (length > 0) {
1259                         client_write(wptr, length);
1260                         if (wptr[length-1] != '\n') {
1261                                 cprintf("\n");
1262                         }
1263                 }
1264                 return;
1265         }
1266
1267         if (!strcasecmp(cbtype, "text/html")) {
1268                 ptr = html_to_ascii(content, length, 80, 0);
1269                 wlen = strlen(ptr);
1270                 client_write(ptr, wlen);
1271                 if (ptr[wlen-1] != '\n') {
1272                         cprintf("\n");
1273                 }
1274                 free(ptr);
1275                 return;
1276         }
1277
1278         if (ma->use_fo_hooks) {
1279                 if (PerformFixedOutputHooks(cbtype, content, length)) {
1280                 /* above function returns nonzero if it handled the part */
1281                         return;
1282                 }
1283         }
1284
1285         if (strncasecmp(cbtype, "multipart/", 10)) {
1286                 cprintf("Part %s: %s (%s) (%ld bytes)\r\n",
1287                         partnum, filename, cbtype, (long)length);
1288                 return;
1289         }
1290 }
1291
1292 /*
1293  * The client is elegant and sophisticated and wants to be choosy about
1294  * MIME content types, so figure out which multipart/alternative part
1295  * we're going to send.
1296  *
1297  * We use a system of weights.  When we find a part that matches one of the
1298  * MIME types we've declared as preferential, we can store it in ma->chosen_part
1299  * and then set ma->chosen_pref to that MIME type's position in our preference
1300  * list.  If we then hit another match, we only replace the first match if
1301  * the preference value is lower.
1302  */
1303 void choose_preferred(char *name, char *filename, char *partnum, char *disp,
1304                 void *content, char *cbtype, char *cbcharset, size_t length,
1305                 char *encoding, char *cbid, void *cbuserdata)
1306 {
1307         char buf[1024];
1308         int i;
1309         struct ma_info *ma;
1310
1311         ma = (struct ma_info *)cbuserdata;
1312
1313         // NOTE: REMOVING THIS CONDITIONAL FIXES BUG 220
1314         //       http://bugzilla.citadel.org/show_bug.cgi?id=220
1315         // I don't know if there are any side effects!  Please TEST TEST TEST
1316         //if (ma->is_ma > 0) {
1317
1318         for (i=0; i<num_tokens(CC->preferred_formats, '|'); ++i) {
1319                 extract_token(buf, CC->preferred_formats, i, '|', sizeof buf);
1320                 if ( (!strcasecmp(buf, cbtype)) && (!ma->freeze) ) {
1321                         if (i < ma->chosen_pref) {
1322                                 CtdlLogPrintf(CTDL_DEBUG, "Setting chosen part: <%s>\n", partnum);
1323                                 safestrncpy(ma->chosen_part, partnum, sizeof ma->chosen_part);
1324                                 ma->chosen_pref = i;
1325                         }
1326                 }
1327         }
1328 }
1329
1330 /*
1331  * Now that we've chosen our preferred part, output it.
1332  */
1333 void output_preferred(char *name, char *filename, char *partnum, char *disp,
1334                 void *content, char *cbtype, char *cbcharset, size_t length,
1335                 char *encoding, char *cbid, void *cbuserdata)
1336 {
1337         int i;
1338         char buf[128];
1339         int add_newline = 0;
1340         char *text_content;
1341         struct ma_info *ma;
1342
1343         ma = (struct ma_info *)cbuserdata;
1344
1345         /* This is not the MIME part you're looking for... */
1346         if (strcasecmp(partnum, ma->chosen_part)) return;
1347
1348         /* If the content-type of this part is in our preferred formats
1349          * list, we can simply output it verbatim.
1350          */
1351         for (i=0; i<num_tokens(CC->preferred_formats, '|'); ++i) {
1352                 extract_token(buf, CC->preferred_formats, i, '|', sizeof buf);
1353                 if (!strcasecmp(buf, cbtype)) {
1354                         /* Yeah!  Go!  W00t!! */
1355
1356                         text_content = (char *)content;
1357                         if (text_content[length-1] != '\n') {
1358                                 ++add_newline;
1359                         }
1360                         cprintf("Content-type: %s", cbtype);
1361                         if (!IsEmptyStr(cbcharset)) {
1362                                 cprintf("; charset=%s", cbcharset);
1363                         }
1364                         cprintf("\nContent-length: %d\n",
1365                                 (int)(length + add_newline) );
1366                         if (!IsEmptyStr(encoding)) {
1367                                 cprintf("Content-transfer-encoding: %s\n", encoding);
1368                         }
1369                         else {
1370                                 cprintf("Content-transfer-encoding: 7bit\n");
1371                         }
1372                         cprintf("X-Citadel-MSG4-Partnum: %s\n", partnum);
1373                         cprintf("\n");
1374                         client_write(content, length);
1375                         if (add_newline) cprintf("\n");
1376                         return;
1377                 }
1378         }
1379
1380         /* No translations required or possible: output as text/plain */
1381         cprintf("Content-type: text/plain\n\n");
1382         fixed_output(name, filename, partnum, disp, content, cbtype, cbcharset,
1383                         length, encoding, cbid, cbuserdata);
1384 }
1385
1386
1387 struct encapmsg {
1388         char desired_section[64];
1389         char *msg;
1390         size_t msglen;
1391 };
1392
1393
1394 /*
1395  * Callback function for
1396  */
1397 void extract_encapsulated_message(char *name, char *filename, char *partnum, char *disp,
1398                    void *content, char *cbtype, char *cbcharset, size_t length,
1399                    char *encoding, char *cbid, void *cbuserdata)
1400 {
1401         struct encapmsg *encap;
1402
1403         encap = (struct encapmsg *)cbuserdata;
1404
1405         /* Only proceed if this is the desired section... */
1406         if (!strcasecmp(encap->desired_section, partnum)) {
1407                 encap->msglen = length;
1408                 encap->msg = malloc(length + 2);
1409                 memcpy(encap->msg, content, length);
1410                 return;
1411         }
1412
1413 }
1414
1415
1416
1417
1418 /*
1419  * Get a message off disk.  (returns om_* values found in msgbase.h)
1420  *
1421  */
1422 int CtdlOutputMsg(long msg_num,         /* message number (local) to fetch */
1423                   int mode,             /* how would you like that message? */
1424                   int headers_only,     /* eschew the message body? */
1425                   int do_proto,         /* do Citadel protocol responses? */
1426                   int crlf,             /* Use CRLF newlines instead of LF? */
1427                   char *section,        /* NULL or a message/rfc822 section */
1428                   int flags             /* should the bessage be exported clean? */
1429 ) {
1430         struct CtdlMessage *TheMessage = NULL;
1431         int retcode = om_no_such_msg;
1432         struct encapmsg encap;
1433
1434         CtdlLogPrintf(CTDL_DEBUG, "CtdlOutputMsg() msgnum=%ld, mode=%d, section=%s\n",
1435                 msg_num, mode,
1436                 (section ? section : "<>")
1437         );
1438
1439         if ((!(CC->logged_in)) && (!(CC->internal_pgm))) {
1440                 if (do_proto) cprintf("%d Not logged in.\n",
1441                         ERROR + NOT_LOGGED_IN);
1442                 return(om_not_logged_in);
1443         }
1444
1445         /* FIXME: check message id against msglist for this room */
1446
1447         /*
1448          * Fetch the message from disk.  If we're in HEADERS_FAST mode,
1449          * request that we don't even bother loading the body into memory.
1450          */
1451         if (headers_only == HEADERS_FAST) {
1452                 TheMessage = CtdlFetchMessage(msg_num, 0);
1453         }
1454         else {
1455                 TheMessage = CtdlFetchMessage(msg_num, 1);
1456         }
1457
1458         if (TheMessage == NULL) {
1459                 if (do_proto) cprintf("%d Can't locate msg %ld on disk\n",
1460                         ERROR + MESSAGE_NOT_FOUND, msg_num);
1461                 return(om_no_such_msg);
1462         }
1463
1464         /* Here is the weird form of this command, to process only an
1465          * encapsulated message/rfc822 section.
1466          */
1467         if (section) if (!IsEmptyStr(section)) if (strcmp(section, "0")) {
1468                 memset(&encap, 0, sizeof encap);
1469                 safestrncpy(encap.desired_section, section, sizeof encap.desired_section);
1470                 mime_parser(TheMessage->cm_fields['M'],
1471                         NULL,
1472                         *extract_encapsulated_message,
1473                         NULL, NULL, (void *)&encap, 0
1474                 );
1475                 CtdlFreeMessage(TheMessage);
1476                 TheMessage = NULL;
1477
1478                 if (encap.msg) {
1479                         encap.msg[encap.msglen] = 0;
1480                         TheMessage = convert_internet_message(encap.msg);
1481                         encap.msg = NULL;       /* no free() here, TheMessage owns it now */
1482
1483                         /* Now we let it fall through to the bottom of this
1484                          * function, because TheMessage now contains the
1485                          * encapsulated message instead of the top-level
1486                          * message.  Isn't that neat?
1487                          */
1488
1489                 }
1490                 else {
1491                         if (do_proto) cprintf("%d msg %ld has no part %s\n",
1492                                 ERROR + MESSAGE_NOT_FOUND, msg_num, section);
1493                         retcode = om_no_such_msg;
1494                 }
1495
1496         }
1497
1498         /* Ok, output the message now */
1499         retcode = CtdlOutputPreLoadedMsg(TheMessage, mode, headers_only, do_proto, crlf, flags);
1500         CtdlFreeMessage(TheMessage);
1501
1502         return(retcode);
1503 }
1504
1505
1506 char *qp_encode_email_addrs(char *source)
1507 {
1508         char user[256], node[256], name[256];
1509         const char headerStr[] = "=?UTF-8?Q?";
1510         char *Encoded;
1511         char *EncodedName;
1512         char *nPtr;
1513         int need_to_encode = 0;
1514         long SourceLen;
1515         long EncodedMaxLen;
1516         long nColons = 0;
1517         long *AddrPtr;
1518         long *AddrUtf8;
1519         long nAddrPtrMax = 50;
1520         long nmax;
1521         int InQuotes = 0;
1522         int i, n;
1523
1524         if (source == NULL) return source;
1525         if (IsEmptyStr(source)) return source;
1526
1527         AddrPtr = malloc (sizeof (long) * nAddrPtrMax);
1528         AddrUtf8 = malloc (sizeof (long) * nAddrPtrMax);
1529         memset(AddrUtf8, 0, sizeof (long) * nAddrPtrMax);
1530         *AddrPtr = 0;
1531         i = 0;
1532         while (!IsEmptyStr (&source[i])) {
1533                 if (nColons >= nAddrPtrMax){
1534                         long *ptr;
1535
1536                         ptr = (long *) malloc(sizeof (long) * nAddrPtrMax * 2);
1537                         memcpy (ptr, AddrPtr, sizeof (long) * nAddrPtrMax);
1538                         free (AddrPtr), AddrPtr = ptr;
1539
1540                         ptr = (long *) malloc(sizeof (long) * nAddrPtrMax * 2);
1541                         memset(&ptr[nAddrPtrMax], 0,
1542                                sizeof (long) * nAddrPtrMax);
1543
1544                         memcpy (ptr, AddrUtf8, sizeof (long) * nAddrPtrMax);
1545                         free (AddrUtf8), AddrUtf8 = ptr;
1546                         nAddrPtrMax *= 2;
1547                 }
1548                 if (((unsigned char) source[i] < 32) ||
1549                     ((unsigned char) source[i] > 126)) {
1550                         need_to_encode = 1;
1551                         AddrUtf8[nColons] = 1;
1552                 }
1553                 if (source[i] == '"')
1554                         InQuotes = !InQuotes;
1555                 if (!InQuotes && source[i] == ',') {
1556                         AddrPtr[nColons] = i;
1557                         nColons++;
1558                 }
1559                 i++;
1560         }
1561         if (need_to_encode == 0) {
1562                 free(AddrPtr);
1563                 free(AddrUtf8);
1564                 return source;
1565         }
1566
1567         SourceLen = i;
1568         EncodedMaxLen = nColons * (sizeof(headerStr) + 3) + SourceLen * 3;
1569         Encoded = (char*) malloc (EncodedMaxLen);
1570
1571         for (i = 0; i < nColons; i++)
1572                 source[AddrPtr[i]++] = '\0';
1573
1574         nPtr = Encoded;
1575         *nPtr = '\0';
1576         for (i = 0; i < nColons && nPtr != NULL; i++) {
1577                 nmax = EncodedMaxLen - (nPtr - Encoded);
1578                 if (AddrUtf8[i]) {
1579                         process_rfc822_addr(&source[AddrPtr[i]],
1580                                             user,
1581                                             node,
1582                                             name);
1583                         /* TODO: libIDN here ! */
1584                         if (IsEmptyStr(name)) {
1585                                 n = snprintf(nPtr, nmax,
1586                                              (i==0)?"%s@%s" : ",%s@%s",
1587                                              user, node);
1588                         }
1589                         else {
1590                                 EncodedName = rfc2047encode(name, strlen(name));
1591                                 n = snprintf(nPtr, nmax,
1592                                              (i==0)?"%s <%s@%s>" : ",%s <%s@%s>",
1593                                              EncodedName, user, node);
1594                                 free(EncodedName);
1595                         }
1596                 }
1597                 else {
1598                         n = snprintf(nPtr, nmax,
1599                                      (i==0)?"%s" : ",%s",
1600                                      &source[AddrPtr[i]]);
1601                 }
1602                 if (n > 0 )
1603                         nPtr += n;
1604                 else {
1605                         char *ptr, *nnPtr;
1606                         ptr = (char*) malloc(EncodedMaxLen * 2);
1607                         memcpy(ptr, Encoded, EncodedMaxLen);
1608                         nnPtr = ptr + (nPtr - Encoded), nPtr = nnPtr;
1609                         free(Encoded), Encoded = ptr;
1610                         EncodedMaxLen *= 2;
1611                         i--; /* do it once more with properly lengthened buffer */
1612                 }
1613         }
1614         for (i = 0; i < nColons; i++)
1615                 source[--AddrPtr[i]] = ',';
1616         free(AddrUtf8);
1617         free(AddrPtr);
1618         return Encoded;
1619 }
1620
1621
1622 /* If the last item in a list of recipients was truncated to a partial address,
1623  * remove it completely in order to avoid choking libSieve
1624  */
1625 void sanitize_truncated_recipient(char *str)
1626 {
1627         if (!str) return;
1628         if (num_tokens(str, ',') < 2) return;
1629
1630         int len = strlen(str);
1631         if (len < 900) return;
1632         if (len > 998) str[998] = 0;
1633
1634         char *cptr = strrchr(str, ',');
1635         if (!cptr) return;
1636
1637         char *lptr = strchr(cptr, '<');
1638         char *rptr = strchr(cptr, '>');
1639
1640         if ( (lptr) && (rptr) && (rptr > lptr) ) return;
1641
1642         *cptr = 0;
1643 }
1644
1645
1646
1647 /*
1648  * Get a message off disk.  (returns om_* values found in msgbase.h)
1649  */
1650 int CtdlOutputPreLoadedMsg(
1651                 struct CtdlMessage *TheMessage,
1652                 int mode,               /* how would you like that message? */
1653                 int headers_only,       /* eschew the message body? */
1654                 int do_proto,           /* do Citadel protocol responses? */
1655                 int crlf,               /* Use CRLF newlines instead of LF? */
1656                 int flags               /* should the bessage be exported clean? */
1657 ) {
1658         int i, j, k;
1659         char buf[SIZ];
1660         cit_uint8_t ch, prev_ch;
1661         char allkeys[30];
1662         char display_name[256];
1663         char *mptr, *mpptr;
1664         char *nl;       /* newline string */
1665         int suppress_f = 0;
1666         int subject_found = 0;
1667         struct ma_info ma;
1668
1669         /* Buffers needed for RFC822 translation.  These are all filled
1670          * using functions that are bounds-checked, and therefore we can
1671          * make them substantially smaller than SIZ.
1672          */
1673         char suser[100];
1674         char luser[100];
1675         char fuser[100];
1676         char snode[100];
1677         char mid[100];
1678         char datestamp[100];
1679
1680         CtdlLogPrintf(CTDL_DEBUG, "CtdlOutputPreLoadedMsg(TheMessage=%s, %d, %d, %d, %d\n",
1681                 ((TheMessage == NULL) ? "NULL" : "not null"),
1682                 mode, headers_only, do_proto, crlf);
1683
1684         strcpy(mid, "unknown");
1685         nl = (crlf ? "\r\n" : "\n");
1686
1687         if (!is_valid_message(TheMessage)) {
1688                 CtdlLogPrintf(CTDL_ERR,
1689                         "ERROR: invalid preloaded message for output\n");
1690                 cit_backtrace ();
1691                 return(om_no_such_msg);
1692         }
1693
1694         /* Are we downloading a MIME component? */
1695         if (mode == MT_DOWNLOAD) {
1696                 if (TheMessage->cm_format_type != FMT_RFC822) {
1697                         if (do_proto)
1698                                 cprintf("%d This is not a MIME message.\n",
1699                                 ERROR + ILLEGAL_VALUE);
1700                 } else if (CC->download_fp != NULL) {
1701                         if (do_proto) cprintf(
1702                                 "%d You already have a download open.\n",
1703                                 ERROR + RESOURCE_BUSY);
1704                 } else {
1705                         /* Parse the message text component */
1706                         mptr = TheMessage->cm_fields['M'];
1707                         mime_parser(mptr, NULL, *mime_download, NULL, NULL, NULL, 0);
1708                         /* If there's no file open by this time, the requested
1709                          * section wasn't found, so print an error
1710                          */
1711                         if (CC->download_fp == NULL) {
1712                                 if (do_proto) cprintf(
1713                                         "%d Section %s not found.\n",
1714                                         ERROR + FILE_NOT_FOUND,
1715                                         CC->download_desired_section);
1716                         }
1717                 }
1718                 return((CC->download_fp != NULL) ? om_ok : om_mime_error);
1719         }
1720
1721         /* MT_SPEW_SECTION is like MT_DOWNLOAD except it outputs the whole MIME part
1722          * in a single server operation instead of opening a download file.
1723          */
1724         if (mode == MT_SPEW_SECTION) {
1725                 if (TheMessage->cm_format_type != FMT_RFC822) {
1726                         if (do_proto)
1727                                 cprintf("%d This is not a MIME message.\n",
1728                                 ERROR + ILLEGAL_VALUE);
1729                 } else {
1730                         /* Parse the message text component */
1731                         int found_it = 0;
1732
1733                         mptr = TheMessage->cm_fields['M'];
1734                         mime_parser(mptr, NULL, *mime_spew_section, NULL, NULL, (void *)&found_it, 0);
1735                         /* If section wasn't found, print an error
1736                          */
1737                         if (!found_it) {
1738                                 if (do_proto) cprintf(
1739                                         "%d Section %s not found.\n",
1740                                         ERROR + FILE_NOT_FOUND,
1741                                         CC->download_desired_section);
1742                         }
1743                 }
1744                 return((CC->download_fp != NULL) ? om_ok : om_mime_error);
1745         }
1746
1747         /* now for the user-mode message reading loops */
1748         if (do_proto) cprintf("%d msg:\n", LISTING_FOLLOWS);
1749
1750         /* Does the caller want to skip the headers? */
1751         if (headers_only == HEADERS_NONE) goto START_TEXT;
1752
1753         /* Tell the client which format type we're using. */
1754         if ( (mode == MT_CITADEL) && (do_proto) ) {
1755                 cprintf("type=%d\n", TheMessage->cm_format_type);
1756         }
1757
1758         /* nhdr=yes means that we're only displaying headers, no body */
1759         if ( (TheMessage->cm_anon_type == MES_ANONONLY)
1760            && ((mode == MT_CITADEL) || (mode == MT_MIME))
1761            && (do_proto)
1762            ) {
1763                 cprintf("nhdr=yes\n");
1764         }
1765
1766         /* begin header processing loop for Citadel message format */
1767
1768         if ((mode == MT_CITADEL) || (mode == MT_MIME)) {
1769
1770                 safestrncpy(display_name, "<unknown>", sizeof display_name);
1771                 if (TheMessage->cm_fields['A']) {
1772                         strcpy(buf, TheMessage->cm_fields['A']);
1773                         if (TheMessage->cm_anon_type == MES_ANONONLY) {
1774                                 safestrncpy(display_name, "****", sizeof display_name);
1775                         }
1776                         else if (TheMessage->cm_anon_type == MES_ANONOPT) {
1777                                 safestrncpy(display_name, "anonymous", sizeof display_name);
1778                         }
1779                         else {
1780                                 safestrncpy(display_name, buf, sizeof display_name);
1781                         }
1782                         if ((is_room_aide())
1783                             && ((TheMessage->cm_anon_type == MES_ANONONLY)
1784                              || (TheMessage->cm_anon_type == MES_ANONOPT))) {
1785                                 size_t tmp = strlen(display_name);
1786                                 snprintf(&display_name[tmp],
1787                                          sizeof display_name - tmp,
1788                                          " [%s]", buf);
1789                         }
1790                 }
1791
1792                 /* Don't show Internet address for users on the
1793                  * local Citadel network.
1794                  */
1795                 suppress_f = 0;
1796                 if (TheMessage->cm_fields['N'] != NULL)
1797                    if (!IsEmptyStr(TheMessage->cm_fields['N']))
1798                       if (haschar(TheMessage->cm_fields['N'], '.') == 0) {
1799                         suppress_f = 1;
1800                 }
1801
1802                 /* Now spew the header fields in the order we like them. */
1803                 safestrncpy(allkeys, FORDER, sizeof allkeys);
1804                 for (i=0; i<strlen(allkeys); ++i) {
1805                         k = (int) allkeys[i];
1806                         if (k != 'M') {
1807                                 if ( (TheMessage->cm_fields[k] != NULL)
1808                                    && (msgkeys[k] != NULL) ) {
1809                                         if ((k == 'V') || (k == 'R') || (k == 'Y')) {
1810                                                 sanitize_truncated_recipient(TheMessage->cm_fields[k]);
1811                                         }
1812                                         if (k == 'A') {
1813                                                 if (do_proto) cprintf("%s=%s\n",
1814                                                         msgkeys[k],
1815                                                         display_name);
1816                                         }
1817                                         else if ((k == 'F') && (suppress_f)) {
1818                                                 /* do nothing */
1819                                         }
1820                                         /* Masquerade display name if needed */
1821                                         else {
1822                                                 if (do_proto) cprintf("%s=%s\n",
1823                                                         msgkeys[k],
1824                                                         TheMessage->cm_fields[k]
1825                                         );
1826                                         }
1827                                 }
1828                         }
1829                 }
1830
1831         }
1832
1833         /* begin header processing loop for RFC822 transfer format */
1834
1835         strcpy(suser, "");
1836         strcpy(luser, "");
1837         strcpy(fuser, "");
1838         strcpy(snode, NODENAME);
1839         if (mode == MT_RFC822) {
1840                 for (i = 0; i < 256; ++i) {
1841                         if (TheMessage->cm_fields[i]) {
1842                                 mptr = mpptr = TheMessage->cm_fields[i];
1843
1844                                 if (i == 'A') {
1845                                         safestrncpy(luser, mptr, sizeof luser);
1846                                         safestrncpy(suser, mptr, sizeof suser);
1847                                 }
1848                                 else if (i == 'Y') {
1849                                         if ((flags & QP_EADDR) != 0) {
1850                                                 mptr = qp_encode_email_addrs(mptr);
1851                                         }
1852                                         sanitize_truncated_recipient(mptr);
1853                                         cprintf("CC: %s%s", mptr, nl);
1854                                 }
1855                                 else if (i == 'P') {
1856                                         cprintf("Return-Path: %s%s", mptr, nl);
1857                                 }
1858                                 else if (i == 'L') {
1859                                         cprintf("List-ID: %s%s", mptr, nl);
1860                                 }
1861                                 else if (i == 'V') {
1862                                         if ((flags & QP_EADDR) != 0)
1863                                                 mptr = qp_encode_email_addrs(mptr);
1864                                         cprintf("Envelope-To: %s%s", mptr, nl);
1865                                 }
1866                                 else if (i == 'U') {
1867                                         cprintf("Subject: %s%s", mptr, nl);
1868                                         subject_found = 1;
1869                                 }
1870                                 else if (i == 'I')
1871                                         safestrncpy(mid, mptr, sizeof mid);
1872                                 else if (i == 'F')
1873                                         safestrncpy(fuser, mptr, sizeof fuser);
1874                                 /* else if (i == 'O')
1875                                         cprintf("X-Citadel-Room: %s%s",
1876                                                 mptr, nl); */
1877                                 else if (i == 'N')
1878                                         safestrncpy(snode, mptr, sizeof snode);
1879                                 else if (i == 'R')
1880                                 {
1881                                         if (haschar(mptr, '@') == 0)
1882                                         {
1883                                                 sanitize_truncated_recipient(mptr);
1884                                                 cprintf("To: %s@%s", mptr, config.c_fqdn);
1885                                                 cprintf("%s", nl);
1886                                         }
1887                                         else
1888                                         {
1889                                                 if ((flags & QP_EADDR) != 0) {
1890                                                         mptr = qp_encode_email_addrs(mptr);
1891                                                 }
1892                                                 sanitize_truncated_recipient(mptr);
1893                                                 cprintf("To: %s", mptr);
1894                                                 cprintf("%s", nl);
1895                                         }
1896                                 }
1897                                 else if (i == 'T') {
1898                                         datestring(datestamp, sizeof datestamp,
1899                                                 atol(mptr), DATESTRING_RFC822);
1900                                         cprintf("Date: %s%s", datestamp, nl);
1901                                 }
1902                                 else if (i == 'W') {
1903                                         cprintf("References: ");
1904                                         k = num_tokens(mptr, '|');
1905                                         for (j=0; j<k; ++j) {
1906                                                 extract_token(buf, mptr, j, '|', sizeof buf);
1907                                                 cprintf("<%s>", buf);
1908                                                 if (j == (k-1)) {
1909                                                         cprintf("%s", nl);
1910                                                 }
1911                                                 else {
1912                                                         cprintf(" ");
1913                                                 }
1914                                         }
1915                                 }
1916                                 if (mptr != mpptr)
1917                                         free (mptr);
1918                         }
1919                 }
1920                 if (subject_found == 0) {
1921                         cprintf("Subject: (no subject)%s", nl);
1922                 }
1923         }
1924
1925         for (i=0; !IsEmptyStr(&suser[i]); ++i) {
1926                 suser[i] = tolower(suser[i]);
1927                 if (!isalnum(suser[i])) suser[i]='_';
1928         }
1929
1930         if (mode == MT_RFC822) {
1931                 if (!strcasecmp(snode, NODENAME)) {
1932                         safestrncpy(snode, FQDN, sizeof snode);
1933                 }
1934
1935                 /* Construct a fun message id */
1936                 cprintf("Message-ID: <%s", mid);/// todo: this possibly breaks threadding mails.
1937                 if (strchr(mid, '@')==NULL) {
1938                         cprintf("@%s", snode);
1939                 }
1940                 cprintf(">%s", nl);
1941
1942                 if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONONLY)) {
1943                         cprintf("From: \"----\" <x@x.org>%s", nl);
1944                 }
1945                 else if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONOPT)) {
1946                         cprintf("From: \"anonymous\" <x@x.org>%s", nl);
1947                 }
1948                 else if (!IsEmptyStr(fuser)) {
1949                         cprintf("From: \"%s\" <%s>%s", luser, fuser, nl);
1950                 }
1951                 else {
1952                         cprintf("From: \"%s\" <%s@%s>%s", luser, suser, snode, nl);
1953                 }
1954
1955                 /* Blank line signifying RFC822 end-of-headers */
1956                 if (TheMessage->cm_format_type != FMT_RFC822) {
1957                         cprintf("%s", nl);
1958                 }
1959         }
1960
1961         /* end header processing loop ... at this point, we're in the text */
1962 START_TEXT:
1963         if (headers_only == HEADERS_FAST) goto DONE;
1964         mptr = TheMessage->cm_fields['M'];
1965
1966         /* Tell the client about the MIME parts in this message */
1967         if (TheMessage->cm_format_type == FMT_RFC822) {
1968                 if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
1969                         memset(&ma, 0, sizeof(struct ma_info));
1970                         mime_parser(mptr, NULL,
1971                                 (do_proto ? *list_this_part : NULL),
1972                                 (do_proto ? *list_this_pref : NULL),
1973                                 (do_proto ? *list_this_suff : NULL),
1974                                 (void *)&ma, 0);
1975                 }
1976                 else if (mode == MT_RFC822) {   /* unparsed RFC822 dump */
1977                         char *start_of_text = NULL;
1978                         start_of_text = strstr(mptr, "\n\r\n");
1979                         if (start_of_text == NULL) start_of_text = strstr(mptr, "\n\n");
1980                         if (start_of_text == NULL) start_of_text = mptr;
1981                         ++start_of_text;
1982                         start_of_text = strstr(start_of_text, "\n");
1983                         ++start_of_text;
1984
1985                         char outbuf[1024];
1986                         int outlen = 0;
1987                         int nllen = strlen(nl);
1988                         prev_ch = 0;
1989                         while (ch=*mptr, ch!=0) {
1990                                 if (ch==13) {
1991                                         /* do nothing */
1992                                 }
1993                                 else {
1994                                         if (
1995                                                 ((headers_only == HEADERS_NONE) && (mptr >= start_of_text))
1996                                            ||   ((headers_only == HEADERS_ONLY) && (mptr < start_of_text))
1997                                            ||   ((headers_only != HEADERS_NONE) && (headers_only != HEADERS_ONLY))
1998                                         ) {
1999                                                 if (ch == 10) {
2000                                                         sprintf(&outbuf[outlen], "%s", nl);
2001                                                         outlen += nllen;
2002                                                 }
2003                                                 else {
2004                                                         outbuf[outlen++] = ch;
2005                                                 }
2006                                         }
2007                                 }
2008                                 if (flags & ESC_DOT)
2009                                 {
2010                                         if ((prev_ch == 10) && (ch == '.') && ((*(mptr+1) == 13) || (*(mptr+1) == 10)))
2011                                         {
2012                                                 outbuf[outlen++] = '.';
2013                                         }
2014                                 }
2015                                 prev_ch = ch;
2016                                 ++mptr;
2017                                 if (outlen > 1000) {
2018                                         client_write(outbuf, outlen);
2019                                         outlen = 0;
2020                                 }
2021                         }
2022                         if (outlen > 0) {
2023                                 client_write(outbuf, outlen);
2024                                 outlen = 0;
2025                         }
2026
2027                         goto DONE;
2028                 }
2029         }
2030
2031         if (headers_only == HEADERS_ONLY) {
2032                 goto DONE;
2033         }
2034
2035         /* signify start of msg text */
2036         if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
2037                 if (do_proto) cprintf("text\n");
2038         }
2039
2040         /* If the format type on disk is 1 (fixed-format), then we want
2041          * everything to be output completely literally ... regardless of
2042          * what message transfer format is in use.
2043          */
2044         if (TheMessage->cm_format_type == FMT_FIXED) {
2045                 int buflen;
2046                 if (mode == MT_MIME) {
2047                         cprintf("Content-type: text/plain\n\n");
2048                 }
2049                 *buf = '\0';
2050                 buflen = 0;
2051                 while (ch = *mptr++, ch > 0) {
2052                         if (ch == 13)
2053                                 ch = 10;
2054                         if ((ch == 10) || (buflen > 250)) {
2055                                 buf[buflen] = '\0';
2056                                 cprintf("%s%s", buf, nl);
2057                                 *buf = '\0';
2058                                 buflen = 0;
2059                         } else {
2060                                 buf[buflen] = ch;
2061                                 buflen++;
2062                         }
2063                 }
2064                 buf[buflen] = '\0';
2065                 if (!IsEmptyStr(buf))
2066                         cprintf("%s%s", buf, nl);
2067         }
2068
2069         /* If the message on disk is format 0 (Citadel vari-format), we
2070          * output using the formatter at 80 columns.  This is the final output
2071          * form if the transfer format is RFC822, but if the transfer format
2072          * is Citadel proprietary, it'll still work, because the indentation
2073          * for new paragraphs is correct and the client will reformat the
2074          * message to the reader's screen width.
2075          */
2076         if (TheMessage->cm_format_type == FMT_CITADEL) {
2077                 if (mode == MT_MIME) {
2078                         cprintf("Content-type: text/x-citadel-variformat\n\n");
2079                 }
2080                 memfmout(mptr, 0, nl);
2081         }
2082
2083         /* If the message on disk is format 4 (MIME), we've gotta hand it
2084          * off to the MIME parser.  The client has already been told that
2085          * this message is format 1 (fixed format), so the callback function
2086          * we use will display those parts as-is.
2087          */
2088         if (TheMessage->cm_format_type == FMT_RFC822) {
2089                 memset(&ma, 0, sizeof(struct ma_info));
2090
2091                 if (mode == MT_MIME) {
2092                         ma.use_fo_hooks = 0;
2093                         strcpy(ma.chosen_part, "1");
2094                         ma.chosen_pref = 9999;
2095                         mime_parser(mptr, NULL,
2096                                 *choose_preferred, *fixed_output_pre,
2097                                 *fixed_output_post, (void *)&ma, 0);
2098                         mime_parser(mptr, NULL,
2099                                 *output_preferred, NULL, NULL, (void *)&ma, CC->msg4_dont_decode);
2100                 }
2101                 else {
2102                         ma.use_fo_hooks = 1;
2103                         mime_parser(mptr, NULL,
2104                                 *fixed_output, *fixed_output_pre,
2105                                 *fixed_output_post, (void *)&ma, 0);
2106                 }
2107
2108         }
2109
2110 DONE:   /* now we're done */
2111         if (do_proto) cprintf("000\n");
2112         return(om_ok);
2113 }
2114
2115
2116
2117 /*
2118  * display a message (mode 0 - Citadel proprietary)
2119  */
2120 void cmd_msg0(char *cmdbuf)
2121 {
2122         long msgid;
2123         int headers_only = HEADERS_ALL;
2124
2125         msgid = extract_long(cmdbuf, 0);
2126         headers_only = extract_int(cmdbuf, 1);
2127
2128         CtdlOutputMsg(msgid, MT_CITADEL, headers_only, 1, 0, NULL, 0);
2129         return;
2130 }
2131
2132
2133 /*
2134  * display a message (mode 2 - RFC822)
2135  */
2136 void cmd_msg2(char *cmdbuf)
2137 {
2138         long msgid;
2139         int headers_only = HEADERS_ALL;
2140
2141         msgid = extract_long(cmdbuf, 0);
2142         headers_only = extract_int(cmdbuf, 1);
2143
2144         CtdlOutputMsg(msgid, MT_RFC822, headers_only, 1, 1, NULL, 0);
2145 }
2146
2147
2148
2149 /*
2150  * display a message (mode 3 - IGnet raw format - internal programs only)
2151  */
2152 void cmd_msg3(char *cmdbuf)
2153 {
2154         long msgnum;
2155         struct CtdlMessage *msg = NULL;
2156         struct ser_ret smr;
2157
2158         if (CC->internal_pgm == 0) {
2159                 cprintf("%d This command is for internal programs only.\n",
2160                         ERROR + HIGHER_ACCESS_REQUIRED);
2161                 return;
2162         }
2163
2164         msgnum = extract_long(cmdbuf, 0);
2165         msg = CtdlFetchMessage(msgnum, 1);
2166         if (msg == NULL) {
2167                 cprintf("%d Message %ld not found.\n",
2168                         ERROR + MESSAGE_NOT_FOUND, msgnum);
2169                 return;
2170         }
2171
2172         serialize_message(&smr, msg);
2173         CtdlFreeMessage(msg);
2174
2175         if (smr.len == 0) {
2176                 cprintf("%d Unable to serialize message\n",
2177                         ERROR + INTERNAL_ERROR);
2178                 return;
2179         }
2180
2181         cprintf("%d %ld\n", BINARY_FOLLOWS, (long)smr.len);
2182         client_write((char *)smr.ser, (int)smr.len);
2183         free(smr.ser);
2184 }
2185
2186
2187
2188 /*
2189  * Display a message using MIME content types
2190  */
2191 void cmd_msg4(char *cmdbuf)
2192 {
2193         long msgid;
2194         char section[64];
2195
2196         msgid = extract_long(cmdbuf, 0);
2197         extract_token(section, cmdbuf, 1, '|', sizeof section);
2198         CtdlOutputMsg(msgid, MT_MIME, 0, 1, 0, (section[0] ? section : NULL) , 0);
2199 }
2200
2201
2202
2203 /*
2204  * Client tells us its preferred message format(s)
2205  */
2206 void cmd_msgp(char *cmdbuf)
2207 {
2208         if (!strcasecmp(cmdbuf, "dont_decode")) {
2209                 CC->msg4_dont_decode = 1;
2210                 cprintf("%d MSG4 will not pre-decode messages.\n", CIT_OK);
2211         }
2212         else {
2213                 safestrncpy(CC->preferred_formats, cmdbuf, sizeof(CC->preferred_formats));
2214                 cprintf("%d Preferred MIME formats have been set.\n", CIT_OK);
2215         }
2216 }
2217
2218
2219 /*
2220  * Open a component of a MIME message as a download file
2221  */
2222 void cmd_opna(char *cmdbuf)
2223 {
2224         long msgid;
2225         char desired_section[128];
2226
2227         msgid = extract_long(cmdbuf, 0);
2228         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2229         safestrncpy(CC->download_desired_section, desired_section,
2230                 sizeof CC->download_desired_section);
2231         CtdlOutputMsg(msgid, MT_DOWNLOAD, 0, 1, 1, NULL, 0);
2232 }
2233
2234
2235 /*
2236  * Open a component of a MIME message and transmit it all at once
2237  */
2238 void cmd_dlat(char *cmdbuf)
2239 {
2240         long msgid;
2241         char desired_section[128];
2242
2243         msgid = extract_long(cmdbuf, 0);
2244         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2245         safestrncpy(CC->download_desired_section, desired_section,
2246                 sizeof CC->download_desired_section);
2247         CtdlOutputMsg(msgid, MT_SPEW_SECTION, 0, 1, 1, NULL, 0);
2248 }
2249
2250
2251 /*
2252  * Save one or more message pointers into a specified room
2253  * (Returns 0 for success, nonzero for failure)
2254  * roomname may be NULL to use the current room
2255  *
2256  * Note that the 'supplied_msg' field may be set to NULL, in which case
2257  * the message will be fetched from disk, by number, if we need to perform
2258  * replication checks.  This adds an additional database read, so if the
2259  * caller already has the message in memory then it should be supplied.  (Obviously
2260  * this mode of operation only works if we're saving a single message.)
2261  */
2262 int CtdlSaveMsgPointersInRoom(char *roomname, long newmsgidlist[], int num_newmsgs,
2263                                 int do_repl_check, struct CtdlMessage *supplied_msg)
2264 {
2265         int i, j, unique;
2266         char hold_rm[ROOMNAMELEN];
2267         struct cdbdata *cdbfr;
2268         int num_msgs;
2269         long *msglist;
2270         long highest_msg = 0L;
2271
2272         long msgid = 0;
2273         struct CtdlMessage *msg = NULL;
2274
2275         long *msgs_to_be_merged = NULL;
2276         int num_msgs_to_be_merged = 0;
2277
2278         CtdlLogPrintf(CTDL_DEBUG,
2279                 "CtdlSaveMsgPointersInRoom(room=%s, num_msgs=%d, repl=%d)\n",
2280                 roomname, num_newmsgs, do_repl_check);
2281
2282         strcpy(hold_rm, CC->room.QRname);
2283
2284         /* Sanity checks */
2285         if (newmsgidlist == NULL) return(ERROR + INTERNAL_ERROR);
2286         if (num_newmsgs < 1) return(ERROR + INTERNAL_ERROR);
2287         if (num_newmsgs > 1) supplied_msg = NULL;
2288
2289         /* Now the regular stuff */
2290         if (lgetroom(&CC->room,
2291            ((roomname != NULL) ? roomname : CC->room.QRname) )
2292            != 0) {
2293                 CtdlLogPrintf(CTDL_ERR, "No such room <%s>\n", roomname);
2294                 return(ERROR + ROOM_NOT_FOUND);
2295         }
2296
2297
2298         msgs_to_be_merged = malloc(sizeof(long) * num_newmsgs);
2299         num_msgs_to_be_merged = 0;
2300
2301
2302         cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
2303         if (cdbfr == NULL) {
2304                 msglist = NULL;
2305                 num_msgs = 0;
2306         } else {
2307                 msglist = (long *) cdbfr->ptr;
2308                 cdbfr->ptr = NULL;      /* CtdlSaveMsgPointerInRoom() now owns this memory */
2309                 num_msgs = cdbfr->len / sizeof(long);
2310                 cdb_free(cdbfr);
2311         }
2312
2313
2314         /* Create a list of msgid's which were supplied by the caller, but do
2315          * not already exist in the target room.  It is absolutely taboo to
2316          * have more than one reference to the same message in a room.
2317          */
2318         for (i=0; i<num_newmsgs; ++i) {
2319                 unique = 1;
2320                 if (num_msgs > 0) for (j=0; j<num_msgs; ++j) {
2321                         if (msglist[j] == newmsgidlist[i]) {
2322                                 unique = 0;
2323                         }
2324                 }
2325                 if (unique) {
2326                         msgs_to_be_merged[num_msgs_to_be_merged++] = newmsgidlist[i];
2327                 }
2328         }
2329
2330         CtdlLogPrintf(9, "%d unique messages to be merged\n", num_msgs_to_be_merged);
2331
2332         /*
2333          * Now merge the new messages
2334          */
2335         msglist = realloc(msglist, (sizeof(long) * (num_msgs + num_msgs_to_be_merged)) );
2336         if (msglist == NULL) {
2337                 CtdlLogPrintf(CTDL_ALERT, "ERROR: can't realloc message list!\n");
2338         }
2339         memcpy(&msglist[num_msgs], msgs_to_be_merged, (sizeof(long) * num_msgs_to_be_merged) );
2340         num_msgs += num_msgs_to_be_merged;
2341
2342         /* Sort the message list, so all the msgid's are in order */
2343         num_msgs = sort_msglist(msglist, num_msgs);
2344
2345         /* Determine the highest message number */
2346         highest_msg = msglist[num_msgs - 1];
2347
2348         /* Write it back to disk. */
2349         cdb_store(CDB_MSGLISTS, &CC->room.QRnumber, (int)sizeof(long),
2350                   msglist, (int)(num_msgs * sizeof(long)));
2351
2352         /* Free up the memory we used. */
2353         free(msglist);
2354
2355         /* Update the highest-message pointer and unlock the room. */
2356         CC->room.QRhighest = highest_msg;
2357         lputroom(&CC->room);
2358
2359         /* Perform replication checks if necessary */
2360         if ( (DoesThisRoomNeedEuidIndexing(&CC->room)) && (do_repl_check) ) {
2361                 CtdlLogPrintf(CTDL_DEBUG, "CtdlSaveMsgPointerInRoom() doing repl checks\n");
2362
2363                 for (i=0; i<num_msgs_to_be_merged; ++i) {
2364                         msgid = msgs_to_be_merged[i];
2365
2366                         if (supplied_msg != NULL) {
2367                                 msg = supplied_msg;
2368                         }
2369                         else {
2370                                 msg = CtdlFetchMessage(msgid, 0);
2371                         }
2372
2373                         if (msg != NULL) {
2374                                 ReplicationChecks(msg);
2375
2376                                 /* If the message has an Exclusive ID, index that... */
2377                                 if (msg->cm_fields['E'] != NULL) {
2378                                         index_message_by_euid(msg->cm_fields['E'], &CC->room, msgid);
2379                                 }
2380
2381                                 /* Free up the memory we may have allocated */
2382                                 if (msg != supplied_msg) {
2383                                         CtdlFreeMessage(msg);
2384                                 }
2385                         }
2386
2387                 }
2388         }
2389
2390         else {
2391                 CtdlLogPrintf(CTDL_DEBUG, "CtdlSaveMsgPointerInRoom() skips repl checks\n");
2392         }
2393
2394         /* Submit this room for processing by hooks */
2395         PerformRoomHooks(&CC->room);
2396
2397         /* Go back to the room we were in before we wandered here... */
2398         getroom(&CC->room, hold_rm);
2399
2400         /* Bump the reference count for all messages which were merged */
2401         for (i=0; i<num_msgs_to_be_merged; ++i) {
2402                 AdjRefCount(msgs_to_be_merged[i], +1);
2403         }
2404
2405         /* Free up memory... */
2406         if (msgs_to_be_merged != NULL) {
2407                 free(msgs_to_be_merged);
2408         }
2409
2410         /* Return success. */
2411         return (0);
2412 }
2413
2414
2415 /*
2416  * This is the same as CtdlSaveMsgPointersInRoom() but it only accepts
2417  * a single message.
2418  */
2419 int CtdlSaveMsgPointerInRoom(char *roomname, long msgid,
2420                         int do_repl_check, struct CtdlMessage *supplied_msg)
2421 {
2422         return CtdlSaveMsgPointersInRoom(roomname, &msgid, 1, do_repl_check, supplied_msg);
2423 }
2424
2425
2426
2427
2428 /*
2429  * Message base operation to save a new message to the message store
2430  * (returns new message number)
2431  *
2432  * This is the back end for CtdlSubmitMsg() and should not be directly
2433  * called by server-side modules.
2434  *
2435  */
2436 long send_message(struct CtdlMessage *msg) {
2437         long newmsgid;
2438         long retval;
2439         char msgidbuf[256];
2440         struct ser_ret smr;
2441         int is_bigmsg = 0;
2442         char *holdM = NULL;
2443
2444         /* Get a new message number */
2445         newmsgid = get_new_message_number();
2446         snprintf(msgidbuf, sizeof msgidbuf, "%010ld@%s", newmsgid, config.c_fqdn);
2447
2448         /* Generate an ID if we don't have one already */
2449         if (msg->cm_fields['I']==NULL) {
2450                 msg->cm_fields['I'] = strdup(msgidbuf);
2451         }
2452
2453         /* If the message is big, set its body aside for storage elsewhere */
2454         if (msg->cm_fields['M'] != NULL) {
2455                 if (strlen(msg->cm_fields['M']) > BIGMSG) {
2456                         is_bigmsg = 1;
2457                         holdM = msg->cm_fields['M'];
2458                         msg->cm_fields['M'] = NULL;
2459                 }
2460         }
2461
2462         /* Serialize our data structure for storage in the database */
2463         serialize_message(&smr, msg);
2464
2465         if (is_bigmsg) {
2466                 msg->cm_fields['M'] = holdM;
2467         }
2468
2469         if (smr.len == 0) {
2470                 cprintf("%d Unable to serialize message\n",
2471                         ERROR + INTERNAL_ERROR);
2472                 return (-1L);
2473         }
2474
2475         /* Write our little bundle of joy into the message base */
2476         if (cdb_store(CDB_MSGMAIN, &newmsgid, (int)sizeof(long),
2477                       smr.ser, smr.len) < 0) {
2478                 CtdlLogPrintf(CTDL_ERR, "Can't store message\n");
2479                 retval = 0L;
2480         } else {
2481                 if (is_bigmsg) {
2482                         cdb_store(CDB_BIGMSGS,
2483                                 &newmsgid,
2484                                 (int)sizeof(long),
2485                                 holdM,
2486                                 (strlen(holdM) + 1)
2487                         );
2488                 }
2489                 retval = newmsgid;
2490         }
2491
2492         /* Free the memory we used for the serialized message */
2493         free(smr.ser);
2494
2495         /* Return the *local* message ID to the caller
2496          * (even if we're storing an incoming network message)
2497          */
2498         return(retval);
2499 }
2500
2501
2502
2503 /*
2504  * Serialize a struct CtdlMessage into the format used on disk and network.
2505  *
2506  * This function loads up a "struct ser_ret" (defined in server.h) which
2507  * contains the length of the serialized message and a pointer to the
2508  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
2509  */
2510 void serialize_message(struct ser_ret *ret,             /* return values */
2511                         struct CtdlMessage *msg)        /* unserialized msg */
2512 {
2513         size_t wlen, fieldlen;
2514         int i;
2515         static char *forder = FORDER;
2516
2517         /*
2518          * Check for valid message format
2519          */
2520         if (is_valid_message(msg) == 0) {
2521                 CtdlLogPrintf(CTDL_ERR, "serialize_message() aborting due to invalid message\n");
2522                 ret->len = 0;
2523                 ret->ser = NULL;
2524                 return;
2525         }
2526
2527         ret->len = 3;
2528         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL)
2529                 ret->len = ret->len +
2530                         strlen(msg->cm_fields[(int)forder[i]]) + 2;
2531
2532         ret->ser = malloc(ret->len);
2533         if (ret->ser == NULL) {
2534                 CtdlLogPrintf(CTDL_ERR, "serialize_message() malloc(%ld) failed: %s\n",
2535                         (long)ret->len, strerror(errno));
2536                 ret->len = 0;
2537                 ret->ser = NULL;
2538                 return;
2539         }
2540
2541         ret->ser[0] = 0xFF;
2542         ret->ser[1] = msg->cm_anon_type;
2543         ret->ser[2] = msg->cm_format_type;
2544         wlen = 3;
2545
2546         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
2547                 fieldlen = strlen(msg->cm_fields[(int)forder[i]]);
2548                 ret->ser[wlen++] = (char)forder[i];
2549                 safestrncpy((char *)&ret->ser[wlen], msg->cm_fields[(int)forder[i]], fieldlen+1);
2550                 wlen = wlen + fieldlen + 1;
2551         }
2552         if (ret->len != wlen) CtdlLogPrintf(CTDL_ERR, "ERROR: len=%ld wlen=%ld\n",
2553                 (long)ret->len, (long)wlen);
2554
2555         return;
2556 }
2557
2558
2559 /*
2560  * Serialize a struct CtdlMessage into the format used on disk and network.
2561  *
2562  * This function loads up a "struct ser_ret" (defined in server.h) which
2563  * contains the length of the serialized message and a pointer to the
2564  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
2565  */
2566 void dump_message(struct CtdlMessage *msg,      /* unserialized msg */
2567                   long Siz)                     /* how many chars ? */
2568 {
2569         size_t wlen;
2570         int i;
2571         static char *forder = FORDER;
2572         char *buf;
2573
2574         /*
2575          * Check for valid message format
2576          */
2577         if (is_valid_message(msg) == 0) {
2578                 CtdlLogPrintf(CTDL_ERR, "dump_message() aborting due to invalid message\n");
2579                 return;
2580         }
2581
2582         buf = (char*) malloc (Siz + 1);
2583
2584         wlen = 3;
2585
2586         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
2587                         snprintf (buf, Siz, " msg[%c] = %s ...\n", (char) forder[i],
2588                                    msg->cm_fields[(int)forder[i]]);
2589                         client_write (buf, strlen(buf));
2590                 }
2591
2592         return;
2593 }
2594
2595
2596
2597 /*
2598  * Check to see if any messages already exist in the current room which
2599  * carry the same Exclusive ID as this one.  If any are found, delete them.
2600  */
2601 void ReplicationChecks(struct CtdlMessage *msg) {
2602         long old_msgnum = (-1L);
2603
2604         if (DoesThisRoomNeedEuidIndexing(&CC->room) == 0) return;
2605
2606         CtdlLogPrintf(CTDL_DEBUG, "Performing replication checks in <%s>\n",
2607                 CC->room.QRname);
2608
2609         /* No exclusive id?  Don't do anything. */
2610         if (msg == NULL) return;
2611         if (msg->cm_fields['E'] == NULL) return;
2612         if (IsEmptyStr(msg->cm_fields['E'])) return;
2613         /*CtdlLogPrintf(CTDL_DEBUG, "Exclusive ID: <%s> for room <%s>\n",
2614                 msg->cm_fields['E'], CC->room.QRname);*/
2615
2616         old_msgnum = locate_message_by_euid(msg->cm_fields['E'], &CC->room);
2617         if (old_msgnum > 0L) {
2618                 CtdlLogPrintf(CTDL_DEBUG, "ReplicationChecks() replacing message %ld\n", old_msgnum);
2619                 CtdlDeleteMessages(CC->room.QRname, &old_msgnum, 1, "");
2620         }
2621 }
2622
2623
2624
2625 /*
2626  * Save a message to disk and submit it into the delivery system.
2627  */
2628 long CtdlSubmitMsg(struct CtdlMessage *msg,     /* message to save */
2629                    struct recptypes *recps,     /* recipients (if mail) */
2630                    char *force,                 /* force a particular room? */
2631                    int flags                    /* should the bessage be exported clean? */
2632 ) {
2633         char submit_filename[128];
2634         char generated_timestamp[32];
2635         char hold_rm[ROOMNAMELEN];
2636         char actual_rm[ROOMNAMELEN];
2637         char force_room[ROOMNAMELEN];
2638         char content_type[SIZ];                 /* We have to learn this */
2639         char recipient[SIZ];
2640         long newmsgid;
2641         char *mptr = NULL;
2642         struct ctdluser userbuf;
2643         int a, i;
2644         struct MetaData smi;
2645         FILE *network_fp = NULL;
2646         static int seqnum = 1;
2647         struct CtdlMessage *imsg = NULL;
2648         char *instr = NULL;
2649         size_t instr_alloc = 0;
2650         struct ser_ret smr;
2651         char *hold_R, *hold_D;
2652         char *collected_addresses = NULL;
2653         struct addresses_to_be_filed *aptr = NULL;
2654         char *saved_rfc822_version = NULL;
2655         int qualified_for_journaling = 0;
2656         struct CitContext *CCC = CC;            /* CachedCitContext - performance boost */
2657         char bounce_to[1024] = "";
2658         size_t tmp = 0;
2659         int rv = 0;
2660
2661         CtdlLogPrintf(CTDL_DEBUG, "CtdlSubmitMsg() called\n");
2662         if (is_valid_message(msg) == 0) return(-1);     /* self check */
2663
2664         /* If this message has no timestamp, we take the liberty of
2665          * giving it one, right now.
2666          */
2667         if (msg->cm_fields['T'] == NULL) {
2668                 snprintf(generated_timestamp, sizeof generated_timestamp, "%ld", (long)time(NULL));
2669                 msg->cm_fields['T'] = strdup(generated_timestamp);
2670         }
2671
2672         /* If this message has no path, we generate one.
2673          */
2674         if (msg->cm_fields['P'] == NULL) {
2675                 if (msg->cm_fields['A'] != NULL) {
2676                         msg->cm_fields['P'] = strdup(msg->cm_fields['A']);
2677                         for (a=0; !IsEmptyStr(&msg->cm_fields['P'][a]); ++a) {
2678                                 if (isspace(msg->cm_fields['P'][a])) {
2679                                         msg->cm_fields['P'][a] = ' ';
2680                                 }
2681                         }
2682                 }
2683                 else {
2684                         msg->cm_fields['P'] = strdup("unknown");
2685                 }
2686         }
2687
2688         if (force == NULL) {
2689                 strcpy(force_room, "");
2690         }
2691         else {
2692                 strcpy(force_room, force);
2693         }
2694
2695         /* Learn about what's inside, because it's what's inside that counts */
2696         if (msg->cm_fields['M'] == NULL) {
2697                 CtdlLogPrintf(CTDL_ERR, "ERROR: attempt to save message with NULL body\n");
2698                 return(-2);
2699         }
2700
2701         switch (msg->cm_format_type) {
2702         case 0:
2703                 strcpy(content_type, "text/x-citadel-variformat");
2704                 break;
2705         case 1:
2706                 strcpy(content_type, "text/plain");
2707                 break;
2708         case 4:
2709                 strcpy(content_type, "text/plain");
2710                 mptr = bmstrcasestr(msg->cm_fields['M'], "Content-type:");
2711                 if (mptr != NULL) {
2712                         char *aptr;
2713                         safestrncpy(content_type, &mptr[13], sizeof content_type);
2714                         striplt(content_type);
2715                         aptr = content_type;
2716                         while (!IsEmptyStr(aptr)) {
2717                                 if ((*aptr == ';')
2718                                     || (*aptr == ' ')
2719                                     || (*aptr == 13)
2720                                     || (*aptr == 10)) {
2721                                         *aptr = 0;
2722                                 }
2723                                 else aptr++;
2724                         }
2725                 }
2726         }
2727
2728         /* Goto the correct room */
2729         CtdlLogPrintf(CTDL_DEBUG, "Selected room %s\n", (recps) ? CCC->room.QRname : SENTITEMS);
2730         strcpy(hold_rm, CCC->room.QRname);
2731         strcpy(actual_rm, CCC->room.QRname);
2732         if (recps != NULL) {
2733                 strcpy(actual_rm, SENTITEMS);
2734         }
2735
2736         /* If the user is a twit, move to the twit room for posting */
2737         if (TWITDETECT) {
2738                 if (CCC->user.axlevel == 2) {
2739                         strcpy(hold_rm, actual_rm);
2740                         strcpy(actual_rm, config.c_twitroom);
2741                         CtdlLogPrintf(CTDL_DEBUG, "Diverting to twit room\n");
2742                 }
2743         }
2744
2745         /* ...or if this message is destined for Aide> then go there. */
2746         if (!IsEmptyStr(force_room)) {
2747                 strcpy(actual_rm, force_room);
2748         }
2749
2750         CtdlLogPrintf(CTDL_DEBUG, "Final selection: %s\n", actual_rm);
2751         if (strcasecmp(actual_rm, CCC->room.QRname)) {
2752                 /* getroom(&CCC->room, actual_rm); */
2753                 usergoto(actual_rm, 0, 1, NULL, NULL);
2754         }
2755
2756         /*
2757          * If this message has no O (room) field, generate one.
2758          */
2759         if (msg->cm_fields['O'] == NULL) {
2760                 msg->cm_fields['O'] = strdup(CCC->room.QRname);
2761         }
2762
2763         /* Perform "before save" hooks (aborting if any return nonzero) */
2764         CtdlLogPrintf(CTDL_DEBUG, "Performing before-save hooks\n");
2765         if (PerformMessageHooks(msg, EVT_BEFORESAVE) > 0) return(-3);
2766
2767         /*
2768          * If this message has an Exclusive ID, and the room is replication
2769          * checking enabled, then do replication checks.
2770          */
2771         if (DoesThisRoomNeedEuidIndexing(&CCC->room)) {
2772                 ReplicationChecks(msg);
2773         }
2774
2775         /* Save it to disk */
2776         CtdlLogPrintf(CTDL_DEBUG, "Saving to disk\n");
2777         newmsgid = send_message(msg);
2778         if (newmsgid <= 0L) return(-5);
2779
2780         /* Write a supplemental message info record.  This doesn't have to
2781          * be a critical section because nobody else knows about this message
2782          * yet.
2783          */
2784         CtdlLogPrintf(CTDL_DEBUG, "Creating MetaData record\n");
2785         memset(&smi, 0, sizeof(struct MetaData));
2786         smi.meta_msgnum = newmsgid;
2787         smi.meta_refcount = 0;
2788         safestrncpy(smi.meta_content_type, content_type,
2789                         sizeof smi.meta_content_type);
2790
2791         /*
2792          * Measure how big this message will be when rendered as RFC822.
2793          * We do this for two reasons:
2794          * 1. We need the RFC822 length for the new metadata record, so the
2795          *    POP and IMAP services don't have to calculate message lengths
2796          *    while the user is waiting (multiplied by potentially hundreds
2797          *    or thousands of messages).
2798          * 2. If journaling is enabled, we will need an RFC822 version of the
2799          *    message to attach to the journalized copy.
2800          */
2801         if (CCC->redirect_buffer != NULL) {
2802                 CtdlLogPrintf(CTDL_ALERT, "CCC->redirect_buffer is not NULL during message submission!\n");
2803                 abort();
2804         }
2805         CCC->redirect_buffer = malloc(SIZ);
2806         CCC->redirect_len = 0;
2807         CCC->redirect_alloc = SIZ;
2808         CtdlOutputPreLoadedMsg(msg, MT_RFC822, HEADERS_ALL, 0, 1, QP_EADDR);
2809         smi.meta_rfc822_length = CCC->redirect_len;
2810         saved_rfc822_version = CCC->redirect_buffer;
2811         CCC->redirect_buffer = NULL;
2812         CCC->redirect_len = 0;
2813         CCC->redirect_alloc = 0;
2814
2815         PutMetaData(&smi);
2816
2817         /* Now figure out where to store the pointers */
2818         CtdlLogPrintf(CTDL_DEBUG, "Storing pointers\n");
2819
2820         /* If this is being done by the networker delivering a private
2821          * message, we want to BYPASS saving the sender's copy (because there
2822          * is no local sender; it would otherwise go to the Trashcan).
2823          */
2824         if ((!CCC->internal_pgm) || (recps == NULL)) {
2825                 if (CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 1, msg) != 0) {
2826                         CtdlLogPrintf(CTDL_ERR, "ERROR saving message pointer!\n");
2827                         CtdlSaveMsgPointerInRoom(config.c_aideroom, newmsgid, 0, msg);
2828                 }
2829         }
2830
2831         /* For internet mail, drop a copy in the outbound queue room */
2832         if ((recps != NULL) && (recps->num_internet > 0)) {
2833                 CtdlSaveMsgPointerInRoom(SMTP_SPOOLOUT_ROOM, newmsgid, 0, msg);
2834         }
2835
2836         /* If other rooms are specified, drop them there too. */
2837         if ((recps != NULL) && (recps->num_room > 0))
2838           for (i=0; i<num_tokens(recps->recp_room, '|'); ++i) {
2839                 extract_token(recipient, recps->recp_room, i,
2840                                         '|', sizeof recipient);
2841                 CtdlLogPrintf(CTDL_DEBUG, "Delivering to room <%s>\n", recipient);
2842                 CtdlSaveMsgPointerInRoom(recipient, newmsgid, 0, msg);
2843         }
2844
2845         /* Bump this user's messages posted counter. */
2846         CtdlLogPrintf(CTDL_DEBUG, "Updating user\n");
2847         lgetuser(&CCC->user, CCC->curr_user);
2848         CCC->user.posted = CCC->user.posted + 1;
2849         lputuser(&CCC->user);
2850
2851         /* Decide where bounces need to be delivered */
2852         if ((recps != NULL) && (recps->bounce_to != NULL)) {
2853                 safestrncpy(bounce_to, recps->bounce_to, sizeof bounce_to);
2854         }
2855         else if (CCC->logged_in) {
2856                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", CCC->user.fullname, config.c_nodename);
2857         }
2858         else {
2859                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", msg->cm_fields['A'], msg->cm_fields['N']);
2860         }
2861
2862         /* If this is private, local mail, make a copy in the
2863          * recipient's mailbox and bump the reference count.
2864          */
2865         if ((recps != NULL) && (recps->num_local > 0))
2866           for (i=0; i<num_tokens(recps->recp_local, '|'); ++i) {
2867                 extract_token(recipient, recps->recp_local, i,
2868                                         '|', sizeof recipient);
2869                 CtdlLogPrintf(CTDL_DEBUG, "Delivering private local mail to <%s>\n",
2870                         recipient);
2871                 if (getuser(&userbuf, recipient) == 0) {
2872                         // Add a flag so the Funambol module knows its mail
2873                         msg->cm_fields['W'] = strdup(recipient);
2874                         MailboxName(actual_rm, sizeof actual_rm, &userbuf, MAILROOM);
2875                         CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 0, msg);
2876                         BumpNewMailCounter(userbuf.usernum);
2877                         if (!IsEmptyStr(config.c_funambol_host) || !IsEmptyStr(config.c_pager_program)) {
2878                         /* Generate a instruction message for the Funambol notification
2879                          * server, in the same style as the SMTP queue
2880                          */
2881                            instr_alloc = 1024;
2882                            instr = malloc(instr_alloc);
2883                            snprintf(instr, instr_alloc,
2884                         "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
2885                         "bounceto|%s\n",
2886                         SPOOLMIME, newmsgid, (long)time(NULL),
2887                         bounce_to
2888                         );
2889
2890                            imsg = malloc(sizeof(struct CtdlMessage));
2891                            memset(imsg, 0, sizeof(struct CtdlMessage));
2892                            imsg->cm_magic = CTDLMESSAGE_MAGIC;
2893                            imsg->cm_anon_type = MES_NORMAL;
2894                            imsg->cm_format_type = FMT_RFC822;
2895                            imsg->cm_fields['A'] = strdup("Citadel");
2896                            imsg->cm_fields['J'] = strdup("do not journal");
2897                            imsg->cm_fields['M'] = instr;        /* imsg owns this memory now */
2898                            imsg->cm_fields['W'] = strdup(recipient);
2899                            CtdlSubmitMsg(imsg, NULL, FNBL_QUEUE_ROOM, 0);
2900                            CtdlFreeMessage(imsg);
2901                         }
2902                 }
2903                 else {
2904                         CtdlLogPrintf(CTDL_DEBUG, "No user <%s>\n", recipient);
2905                         CtdlSaveMsgPointerInRoom(config.c_aideroom,
2906                                 newmsgid, 0, msg);
2907                 }
2908         }
2909
2910         /* Perform "after save" hooks */
2911         CtdlLogPrintf(CTDL_DEBUG, "Performing after-save hooks\n");
2912         PerformMessageHooks(msg, EVT_AFTERSAVE);
2913
2914         /* For IGnet mail, we have to save a new copy into the spooler for
2915          * each recipient, with the R and D fields set to the recipient and
2916          * destination-node.  This has two ugly side effects: all other
2917          * recipients end up being unlisted in this recipient's copy of the
2918          * message, and it has to deliver multiple messages to the same
2919          * node.  We'll revisit this again in a year or so when everyone has
2920          * a network spool receiver that can handle the new style messages.
2921          */
2922         if ((recps != NULL) && (recps->num_ignet > 0))
2923           for (i=0; i<num_tokens(recps->recp_ignet, '|'); ++i) {
2924                 extract_token(recipient, recps->recp_ignet, i,
2925                                 '|', sizeof recipient);
2926
2927                 hold_R = msg->cm_fields['R'];
2928                 hold_D = msg->cm_fields['D'];
2929                 msg->cm_fields['R'] = malloc(SIZ);
2930                 msg->cm_fields['D'] = malloc(128);
2931                 extract_token(msg->cm_fields['R'], recipient, 0, '@', SIZ);
2932                 extract_token(msg->cm_fields['D'], recipient, 1, '@', 128);
2933
2934                 serialize_message(&smr, msg);
2935                 if (smr.len > 0) {
2936                         snprintf(submit_filename, sizeof submit_filename,
2937                                          "%s/netmail.%04lx.%04x.%04x",
2938                                          ctdl_netin_dir,
2939                                          (long) getpid(), CCC->cs_pid, ++seqnum);
2940                         network_fp = fopen(submit_filename, "wb+");
2941                         if (network_fp != NULL) {
2942                                 rv = fwrite(smr.ser, smr.len, 1, network_fp);
2943                                 fclose(network_fp);
2944                         }
2945                         free(smr.ser);
2946                 }
2947
2948                 free(msg->cm_fields['R']);
2949                 free(msg->cm_fields['D']);
2950                 msg->cm_fields['R'] = hold_R;
2951                 msg->cm_fields['D'] = hold_D;
2952         }
2953
2954         /* Go back to the room we started from */
2955         CtdlLogPrintf(CTDL_DEBUG, "Returning to original room %s\n", hold_rm);
2956         if (strcasecmp(hold_rm, CCC->room.QRname))
2957                 usergoto(hold_rm, 0, 1, NULL, NULL);
2958
2959         /* For internet mail, generate delivery instructions.
2960          * Yes, this is recursive.  Deal with it.  Infinite recursion does
2961          * not happen because the delivery instructions message does not
2962          * contain a recipient.
2963          */
2964         if ((recps != NULL) && (recps->num_internet > 0)) {
2965                 CtdlLogPrintf(CTDL_DEBUG, "Generating delivery instructions\n");
2966                 instr_alloc = 1024;
2967                 instr = malloc(instr_alloc);
2968                 snprintf(instr, instr_alloc,
2969                         "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
2970                         "bounceto|%s\n",
2971                         SPOOLMIME, newmsgid, (long)time(NULL),
2972                         bounce_to
2973                 );
2974
2975                 if (recps->envelope_from != NULL) {
2976                         tmp = strlen(instr);
2977                         snprintf(&instr[tmp], instr_alloc-tmp, "envelope_from|%s\n", recps->envelope_from);
2978                 }
2979
2980                 for (i=0; i<num_tokens(recps->recp_internet, '|'); ++i) {
2981                         tmp = strlen(instr);
2982                         extract_token(recipient, recps->recp_internet, i, '|', sizeof recipient);
2983                         if ((tmp + strlen(recipient) + 32) > instr_alloc) {
2984                                 instr_alloc = instr_alloc * 2;
2985                                 instr = realloc(instr, instr_alloc);
2986                         }
2987                         snprintf(&instr[tmp], instr_alloc - tmp, "remote|%s|0||\n", recipient);
2988                 }
2989
2990                 imsg = malloc(sizeof(struct CtdlMessage));
2991                 memset(imsg, 0, sizeof(struct CtdlMessage));
2992                 imsg->cm_magic = CTDLMESSAGE_MAGIC;
2993                 imsg->cm_anon_type = MES_NORMAL;
2994                 imsg->cm_format_type = FMT_RFC822;
2995                 imsg->cm_fields['A'] = strdup("Citadel");
2996                 imsg->cm_fields['J'] = strdup("do not journal");
2997                 imsg->cm_fields['M'] = instr;   /* imsg owns this memory now */
2998                 CtdlSubmitMsg(imsg, NULL, SMTP_SPOOLOUT_ROOM, QP_EADDR);
2999                 CtdlFreeMessage(imsg);
3000         }
3001
3002         /*
3003          * Any addresses to harvest for someone's address book?
3004          */
3005         if ( (CCC->logged_in) && (recps != NULL) ) {
3006                 collected_addresses = harvest_collected_addresses(msg);
3007         }
3008
3009         if (collected_addresses != NULL) {
3010                 aptr = (struct addresses_to_be_filed *)
3011                         malloc(sizeof(struct addresses_to_be_filed));
3012                 MailboxName(actual_rm, sizeof actual_rm,
3013                         &CCC->user, USERCONTACTSROOM);
3014                 aptr->roomname = strdup(actual_rm);
3015                 aptr->collected_addresses = collected_addresses;
3016                 begin_critical_section(S_ATBF);
3017                 aptr->next = atbf;
3018                 atbf = aptr;
3019                 end_critical_section(S_ATBF);
3020         }
3021
3022         /*
3023          * Determine whether this message qualifies for journaling.
3024          */
3025         if (msg->cm_fields['J'] != NULL) {
3026                 qualified_for_journaling = 0;
3027         }
3028         else {
3029                 if (recps == NULL) {
3030                         qualified_for_journaling = config.c_journal_pubmsgs;
3031                 }
3032                 else if (recps->num_local + recps->num_ignet + recps->num_internet > 0) {
3033                         qualified_for_journaling = config.c_journal_email;
3034                 }
3035                 else {
3036                         qualified_for_journaling = config.c_journal_pubmsgs;
3037                 }
3038         }
3039
3040         /*
3041          * Do we have to perform journaling?  If so, hand off the saved
3042          * RFC822 version will be handed off to the journaler for background
3043          * submit.  Otherwise, we have to free the memory ourselves.
3044          */
3045         if (saved_rfc822_version != NULL) {
3046                 if (qualified_for_journaling) {
3047                         JournalBackgroundSubmit(msg, saved_rfc822_version, recps);
3048                 }
3049                 else {
3050                         free(saved_rfc822_version);
3051                 }
3052         }
3053
3054         /* Done. */
3055         return(newmsgid);
3056 }
3057
3058
3059
3060
3061
3062 /*
3063  * Convenience function for generating small administrative messages.
3064  */
3065 void quickie_message(const char *from, const char *fromaddr, char *to, char *room, const char *text,
3066                         int format_type, const char *subject)
3067 {
3068         struct CtdlMessage *msg;
3069         struct recptypes *recp = NULL;
3070
3071         msg = malloc(sizeof(struct CtdlMessage));
3072         memset(msg, 0, sizeof(struct CtdlMessage));
3073         msg->cm_magic = CTDLMESSAGE_MAGIC;
3074         msg->cm_anon_type = MES_NORMAL;
3075         msg->cm_format_type = format_type;
3076
3077         if (from != NULL) {
3078                 msg->cm_fields['A'] = strdup(from);
3079         }
3080         else if (fromaddr != NULL) {
3081                 msg->cm_fields['A'] = strdup(fromaddr);
3082                 if (strchr(msg->cm_fields['A'], '@')) {
3083                         *strchr(msg->cm_fields['A'], '@') = 0;
3084                 }
3085         }
3086         else {
3087                 msg->cm_fields['A'] = strdup("Citadel");
3088         }
3089
3090         if (fromaddr != NULL) msg->cm_fields['F'] = strdup(fromaddr);
3091         if (room != NULL) msg->cm_fields['O'] = strdup(room);
3092         msg->cm_fields['N'] = strdup(NODENAME);
3093         if (to != NULL) {
3094                 msg->cm_fields['R'] = strdup(to);
3095                 recp = validate_recipients(to, NULL, 0);
3096         }
3097         if (subject != NULL) {
3098                 msg->cm_fields['U'] = strdup(subject);
3099         }
3100         msg->cm_fields['M'] = strdup(text);
3101
3102         CtdlSubmitMsg(msg, recp, room, 0);
3103         CtdlFreeMessage(msg);
3104         if (recp != NULL) free_recipients(recp);
3105 }
3106
3107
3108
3109 /*
3110  * Back end function used by CtdlMakeMessage() and similar functions
3111  */
3112 char *CtdlReadMessageBody(char *terminator,     /* token signalling EOT */
3113                         size_t maxlen,          /* maximum message length */
3114                         char *exist,            /* if non-null, append to it;
3115                                                    exist is ALWAYS freed  */
3116                         int crlf,               /* CRLF newlines instead of LF */
3117                         int sock                /* socket handle or 0 for this session's client socket */
3118                         ) {
3119         char buf[1024];
3120         int linelen;
3121         size_t message_len = 0;
3122         size_t buffer_len = 0;
3123         char *ptr;
3124         char *m;
3125         int flushing = 0;
3126         int finished = 0;
3127         int dotdot = 0;
3128
3129         if (exist == NULL) {
3130                 m = malloc(4096);
3131                 m[0] = 0;
3132                 buffer_len = 4096;
3133                 message_len = 0;
3134         }
3135         else {
3136                 message_len = strlen(exist);
3137                 buffer_len = message_len + 4096;
3138                 m = realloc(exist, buffer_len);
3139                 if (m == NULL) {
3140                         free(exist);
3141                         return m;
3142                 }
3143         }
3144
3145         /* Do we need to change leading ".." to "." for SMTP escaping? */
3146         if (!strcmp(terminator, ".")) {
3147                 dotdot = 1;
3148         }
3149
3150         /* flush the input if we have nowhere to store it */
3151         if (m == NULL) {
3152                 flushing = 1;
3153         }
3154
3155         /* read in the lines of message text one by one */
3156         do {
3157                 if (sock > 0) {
3158                         if (sock_getln(sock, buf, (sizeof buf - 3)) < 0) finished = 1;
3159                 }
3160                 else {
3161                         if (client_getln(buf, (sizeof buf - 3)) < 1) finished = 1;
3162                 }
3163                 if (!strcmp(buf, terminator)) finished = 1;
3164                 if (crlf) {
3165                         strcat(buf, "\r\n");
3166                 }
3167                 else {
3168                         strcat(buf, "\n");
3169                 }
3170
3171                 /* Unescape SMTP-style input of two dots at the beginning of the line */
3172                 if (dotdot) {
3173                         if (!strncmp(buf, "..", 2)) {
3174                                 strcpy(buf, &buf[1]);
3175                         }
3176                 }
3177
3178                 if ( (!flushing) && (!finished) ) {
3179                         /* Measure the line */
3180                         linelen = strlen(buf);
3181
3182                         /* augment the buffer if we have to */
3183                         if ((message_len + linelen) >= buffer_len) {
3184                                 ptr = realloc(m, (buffer_len * 2) );
3185                                 if (ptr == NULL) {      /* flush if can't allocate */
3186                                         flushing = 1;
3187                                 } else {
3188                                         buffer_len = (buffer_len * 2);
3189                                         m = ptr;
3190                                         CtdlLogPrintf(CTDL_DEBUG, "buffer_len is now %ld\n", (long)buffer_len);
3191                                 }
3192                         }
3193
3194                         /* Add the new line to the buffer.  NOTE: this loop must avoid
3195                         * using functions like strcat() and strlen() because they
3196                         * traverse the entire buffer upon every call, and doing that
3197                         * for a multi-megabyte message slows it down beyond usability.
3198                         */
3199                         strcpy(&m[message_len], buf);
3200                         message_len += linelen;
3201                 }
3202
3203                 /* if we've hit the max msg length, flush the rest */
3204                 if (message_len >= maxlen) flushing = 1;
3205
3206         } while (!finished);
3207         return(m);
3208 }
3209
3210
3211
3212
3213 /*
3214  * Build a binary message to be saved on disk.
3215  * (NOTE: if you supply 'preformatted_text', the buffer you give it
3216  * will become part of the message.  This means you are no longer
3217  * responsible for managing that memory -- it will be freed along with
3218  * the rest of the fields when CtdlFreeMessage() is called.)
3219  */
3220
3221 struct CtdlMessage *CtdlMakeMessage(
3222         struct ctdluser *author,        /* author's user structure */
3223         char *recipient,                /* NULL if it's not mail */
3224         char *recp_cc,                  /* NULL if it's not mail */
3225         char *room,                     /* room where it's going */
3226         int type,                       /* see MES_ types in header file */
3227         int format_type,                /* variformat, plain text, MIME... */
3228         char *fake_name,                /* who we're masquerading as */
3229         char *my_email,                 /* which of my email addresses to use (empty is ok) */
3230         char *subject,                  /* Subject (optional) */
3231         char *supplied_euid,            /* ...or NULL if this is irrelevant */
3232         char *preformatted_text,        /* ...or NULL to read text from client */
3233         char *references                /* Thread references */
3234 ) {
3235         char dest_node[256];
3236         char buf[1024];
3237         struct CtdlMessage *msg;
3238
3239         msg = malloc(sizeof(struct CtdlMessage));
3240         memset(msg, 0, sizeof(struct CtdlMessage));
3241         msg->cm_magic = CTDLMESSAGE_MAGIC;
3242         msg->cm_anon_type = type;
3243         msg->cm_format_type = format_type;
3244
3245         /* Don't confuse the poor folks if it's not routed mail. */
3246         strcpy(dest_node, "");
3247
3248         if (recipient != NULL) striplt(recipient);
3249         if (recp_cc != NULL) striplt(recp_cc);
3250
3251         /* Path or Return-Path */
3252         if (my_email == NULL) my_email = "";
3253
3254         if (!IsEmptyStr(my_email)) {
3255                 msg->cm_fields['P'] = strdup(my_email);
3256         }
3257         else {
3258                 snprintf(buf, sizeof buf, "%s", author->fullname);
3259                 msg->cm_fields['P'] = strdup(buf);
3260         }
3261         convert_spaces_to_underscores(msg->cm_fields['P']);
3262
3263         snprintf(buf, sizeof buf, "%ld", (long)time(NULL));     /* timestamp */
3264         msg->cm_fields['T'] = strdup(buf);
3265
3266         if ((fake_name != NULL) && (fake_name[0])) {            /* author */
3267                 msg->cm_fields['A'] = strdup(fake_name);
3268         }
3269         else {
3270                 msg->cm_fields['A'] = strdup(author->fullname);
3271         }
3272
3273         if (CC->room.QRflags & QR_MAILBOX) {            /* room */
3274                 msg->cm_fields['O'] = strdup(&CC->room.QRname[11]);
3275         }
3276         else {
3277                 msg->cm_fields['O'] = strdup(CC->room.QRname);
3278         }
3279
3280         msg->cm_fields['N'] = strdup(NODENAME);         /* nodename */
3281         msg->cm_fields['H'] = strdup(HUMANNODE);                /* hnodename */
3282
3283         if ((recipient != NULL) && (recipient[0] != 0)) {
3284                 msg->cm_fields['R'] = strdup(recipient);
3285         }
3286         if ((recp_cc != NULL) && (recp_cc[0] != 0)) {
3287                 msg->cm_fields['Y'] = strdup(recp_cc);
3288         }
3289         if (dest_node[0] != 0) {
3290                 msg->cm_fields['D'] = strdup(dest_node);
3291         }
3292
3293         if (!IsEmptyStr(my_email)) {
3294                 msg->cm_fields['F'] = strdup(my_email);
3295         }
3296         else if ( (author == &CC->user) && (!IsEmptyStr(CC->cs_inet_email)) ) {
3297                 msg->cm_fields['F'] = strdup(CC->cs_inet_email);
3298         }
3299
3300         if (subject != NULL) {
3301                 long length;
3302                 striplt(subject);
3303                 length = strlen(subject);
3304                 if (length > 0) {
3305                         long i;
3306                         long IsAscii;
3307                         IsAscii = -1;
3308                         i = 0;
3309                         while ((subject[i] != '\0') &&
3310                                (IsAscii = isascii(subject[i]) != 0 ))
3311                                 i++;
3312                         if (IsAscii != 0)
3313                                 msg->cm_fields['U'] = strdup(subject);
3314                         else /* ok, we've got utf8 in the string. */
3315                         {
3316                                 msg->cm_fields['U'] = rfc2047encode(subject, length);
3317                         }
3318
3319                 }
3320         }
3321
3322         if (supplied_euid != NULL) {
3323                 msg->cm_fields['E'] = strdup(supplied_euid);
3324         }
3325
3326         if (references != NULL) {
3327                 if (!IsEmptyStr(references)) {
3328                         msg->cm_fields['W'] = strdup(references);
3329                 }
3330         }
3331
3332         if (preformatted_text != NULL) {
3333                 msg->cm_fields['M'] = preformatted_text;
3334         }
3335         else {
3336                 msg->cm_fields['M'] = CtdlReadMessageBody("000", config.c_maxmsglen, NULL, 0, 0);
3337         }
3338
3339         return(msg);
3340 }
3341
3342
3343 /*
3344  * Check to see whether we have permission to post a message in the current
3345  * room.  Returns a *CITADEL ERROR CODE* and puts a message in errmsgbuf, or
3346  * returns 0 on success.
3347  */
3348 int CtdlDoIHavePermissionToPostInThisRoom(char *errmsgbuf,
3349                                           size_t n,
3350                                           const char* RemoteIdentifier,
3351                                           int PostPublic) {
3352         int ra;
3353
3354         if (!(CC->logged_in) &&
3355             (PostPublic == POST_LOGGED_IN)) {
3356                 snprintf(errmsgbuf, n, "Not logged in.");
3357                 return (ERROR + NOT_LOGGED_IN);
3358         }
3359         else if (PostPublic == CHECK_EXISTANCE) {
3360                 return (0); // We're Evaling whether a recipient exists
3361         }
3362         else if (!(CC->logged_in)) {
3363
3364                 if ((CC->room.QRflags & QR_READONLY)) {
3365                         snprintf(errmsgbuf, n, "Not logged in.");
3366                         return (ERROR + NOT_LOGGED_IN);
3367                 }
3368                 if (CC->room.QRflags2 & QR2_MODERATED) {
3369                         snprintf(errmsgbuf, n, "Not logged in Moderation feature not yet implemented!");
3370                         return (ERROR + NOT_LOGGED_IN);
3371                 }
3372                 if ((PostPublic!=POST_LMTP) &&(CC->room.QRflags2 & QR2_SMTP_PUBLIC) == 0) {
3373                         SpoolControl *sc;
3374                         char filename[SIZ];
3375                         int found;
3376
3377                         if (RemoteIdentifier == NULL)
3378                         {
3379                                 snprintf(errmsgbuf, n, "Need sender to permit access.");
3380                                 return (ERROR + USERNAME_REQUIRED);
3381                         }
3382
3383                         assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
3384                         begin_critical_section(S_NETCONFIGS);
3385                         if (!read_spoolcontrol_file(&sc, filename))
3386                         {
3387                                 end_critical_section(S_NETCONFIGS);
3388                                 snprintf(errmsgbuf, n,
3389                                         "This mailing list only accepts posts from subscribers.");
3390                                 return (ERROR + NO_SUCH_USER);
3391                         }
3392                         end_critical_section(S_NETCONFIGS);
3393                         found = is_recipient (sc, RemoteIdentifier);
3394                         free_spoolcontrol_struct(&sc);
3395                         if (found) {
3396                                 return (0);
3397                         }
3398                         else {
3399                                 snprintf(errmsgbuf, n,
3400                                         "This mailing list only accepts posts from subscribers.");
3401                                 return (ERROR + NO_SUCH_USER);
3402                         }
3403                 }
3404                 return (0);
3405
3406         }
3407
3408         if ((CC->user.axlevel < 2)
3409             && ((CC->room.QRflags & QR_MAILBOX) == 0)) {
3410                 snprintf(errmsgbuf, n, "Need to be validated to enter "
3411                                 "(except in %s> to sysop)", MAILROOM);
3412                 return (ERROR + HIGHER_ACCESS_REQUIRED);
3413         }
3414
3415         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
3416         if (!(ra & UA_POSTALLOWED)) {
3417                 snprintf(errmsgbuf, n, "Higher access is required to post in this room.");
3418                 return (ERROR + HIGHER_ACCESS_REQUIRED);
3419         }
3420
3421         strcpy(errmsgbuf, "Ok");
3422         return(0);
3423 }
3424
3425
3426 /*
3427  * Check to see if the specified user has Internet mail permission
3428  * (returns nonzero if permission is granted)
3429  */
3430 int CtdlCheckInternetMailPermission(struct ctdluser *who) {
3431
3432         /* Do not allow twits to send Internet mail */
3433         if (who->axlevel <= 2) return(0);
3434
3435         /* Globally enabled? */
3436         if (config.c_restrict == 0) return(1);
3437
3438         /* User flagged ok? */
3439         if (who->flags & US_INTERNET) return(2);
3440
3441         /* Aide level access? */
3442         if (who->axlevel >= 6) return(3);
3443
3444         /* No mail for you! */
3445         return(0);
3446 }
3447
3448
3449 /*
3450  * Validate recipients, count delivery types and errors, and handle aliasing
3451  * FIXME check for dupes!!!!!
3452  *
3453  * Returns 0 if all addresses are ok, ret->num_error = -1 if no addresses
3454  * were specified, or the number of addresses found invalid.
3455  *
3456  * Caller needs to free the result using free_recipients()
3457  */
3458 struct recptypes *validate_recipients(char *supplied_recipients,
3459                                       const char *RemoteIdentifier,
3460                                       int Flags) {
3461         struct recptypes *ret;
3462         char *recipients = NULL;
3463         char this_recp[256];
3464         char this_recp_cooked[256];
3465         char append[SIZ];
3466         int num_recps = 0;
3467         int i, j;
3468         int mailtype;
3469         int invalid;
3470         struct ctdluser tempUS;
3471         struct ctdlroom tempQR;
3472         struct ctdlroom tempQR2;
3473         int err = 0;
3474         char errmsg[SIZ];
3475         int in_quotes = 0;
3476
3477         /* Initialize */
3478         ret = (struct recptypes *) malloc(sizeof(struct recptypes));
3479         if (ret == NULL) return(NULL);
3480
3481         /* Set all strings to null and numeric values to zero */
3482         memset(ret, 0, sizeof(struct recptypes));
3483
3484         if (supplied_recipients == NULL) {
3485                 recipients = strdup("");
3486         }
3487         else {
3488                 recipients = strdup(supplied_recipients);
3489         }
3490
3491         /* Allocate some memory.  Yes, this allocates 500% more memory than we will
3492          * actually need, but it's healthier for the heap than doing lots of tiny
3493          * realloc() calls instead.
3494          */
3495
3496         ret->errormsg = malloc(strlen(recipients) + 1024);
3497         ret->recp_local = malloc(strlen(recipients) + 1024);
3498         ret->recp_internet = malloc(strlen(recipients) + 1024);
3499         ret->recp_ignet = malloc(strlen(recipients) + 1024);
3500         ret->recp_room = malloc(strlen(recipients) + 1024);
3501         ret->display_recp = malloc(strlen(recipients) + 1024);
3502
3503         ret->errormsg[0] = 0;
3504         ret->recp_local[0] = 0;
3505         ret->recp_internet[0] = 0;
3506         ret->recp_ignet[0] = 0;
3507         ret->recp_room[0] = 0;
3508         ret->display_recp[0] = 0;
3509
3510         ret->recptypes_magic = RECPTYPES_MAGIC;
3511
3512         /* Change all valid separator characters to commas */
3513         for (i=0; !IsEmptyStr(&recipients[i]); ++i) {
3514                 if ((recipients[i] == ';') || (recipients[i] == '|')) {
3515                         recipients[i] = ',';
3516                 }
3517         }
3518
3519         /* Now start extracting recipients... */
3520
3521         while (!IsEmptyStr(recipients)) {
3522
3523                 for (i=0; i<=strlen(recipients); ++i) {
3524                         if (recipients[i] == '\"') in_quotes = 1 - in_quotes;
3525                         if ( ( (recipients[i] == ',') && (!in_quotes) ) || (recipients[i] == 0) ) {
3526                                 safestrncpy(this_recp, recipients, i+1);
3527                                 this_recp[i] = 0;
3528                                 if (recipients[i] == ',') {
3529                                         strcpy(recipients, &recipients[i+1]);
3530                                 }
3531                                 else {
3532                                         strcpy(recipients, "");
3533                                 }
3534                                 break;
3535                         }
3536                 }
3537
3538                 striplt(this_recp);
3539                 if (IsEmptyStr(this_recp))
3540                         break;
3541                 CtdlLogPrintf(CTDL_DEBUG, "Evaluating recipient #%d: %s\n", num_recps, this_recp);
3542                 ++num_recps;
3543                 mailtype = alias(this_recp);
3544                 mailtype = alias(this_recp);
3545                 mailtype = alias(this_recp);
3546                 j = 0;
3547                 for (j=0; !IsEmptyStr(&this_recp[j]); ++j) {
3548                         if (this_recp[j]=='_') {
3549                                 this_recp_cooked[j] = ' ';
3550                         }
3551                         else {
3552                                 this_recp_cooked[j] = this_recp[j];
3553                         }
3554                 }
3555                 this_recp_cooked[j] = '\0';
3556                 invalid = 0;
3557                 errmsg[0] = 0;
3558                 switch(mailtype) {
3559                         case MES_LOCAL:
3560                                 if (!strcasecmp(this_recp, "sysop")) {
3561                                         ++ret->num_room;
3562                                         strcpy(this_recp, config.c_aideroom);
3563                                         if (!IsEmptyStr(ret->recp_room)) {
3564                                                 strcat(ret->recp_room, "|");
3565                                         }
3566                                         strcat(ret->recp_room, this_recp);
3567                                 }
3568                                 else if ( (!strncasecmp(this_recp, "room_", 5))
3569                                       && (!getroom(&tempQR, &this_recp_cooked[5])) ) {
3570
3571                                         /* Save room so we can restore it later */
3572                                         tempQR2 = CC->room;
3573                                         CC->room = tempQR;
3574
3575                                         /* Check permissions to send mail to this room */
3576                                         err = CtdlDoIHavePermissionToPostInThisRoom(errmsg,
3577                                                                                     sizeof errmsg,
3578                                                                                     RemoteIdentifier,
3579                                                                                     Flags
3580                                         );
3581                                         if (err)
3582                                         {
3583                                                 ++ret->num_error;
3584                                                 invalid = 1;
3585                                         }
3586                                         else {
3587                                                 ++ret->num_room;
3588                                                 if (!IsEmptyStr(ret->recp_room)) {
3589                                                         strcat(ret->recp_room, "|");
3590                                                 }
3591                                                 strcat(ret->recp_room, &this_recp_cooked[5]);
3592                                         }
3593
3594                                         /* Restore room in case something needs it */
3595                                         CC->room = tempQR2;
3596
3597                                 }
3598                                 else if (getuser(&tempUS, this_recp) == 0) {
3599                                         ++ret->num_local;
3600                                         strcpy(this_recp, tempUS.fullname);
3601                                         if (!IsEmptyStr(ret->recp_local)) {
3602                                                 strcat(ret->recp_local, "|");
3603                                         }
3604                                         strcat(ret->recp_local, this_recp);
3605                                 }
3606                                 else if (getuser(&tempUS, this_recp_cooked) == 0) {
3607                                         ++ret->num_local;
3608                                         strcpy(this_recp, tempUS.fullname);
3609                                         if (!IsEmptyStr(ret->recp_local)) {
3610                                                 strcat(ret->recp_local, "|");
3611                                         }
3612                                         strcat(ret->recp_local, this_recp);
3613                                 }
3614                                 else {
3615                                         ++ret->num_error;
3616                                         invalid = 1;
3617                                 }
3618                                 break;
3619                         case MES_INTERNET:
3620                                 /* Yes, you're reading this correctly: if the target
3621                                  * domain points back to the local system or an attached
3622                                  * Citadel directory, the address is invalid.  That's
3623                                  * because if the address were valid, we would have
3624                                  * already translated it to a local address by now.
3625                                  */
3626                                 if (IsDirectory(this_recp, 0)) {
3627                                         ++ret->num_error;
3628                                         invalid = 1;
3629                                 }
3630                                 else {
3631                                         ++ret->num_internet;
3632                                         if (!IsEmptyStr(ret->recp_internet)) {
3633                                                 strcat(ret->recp_internet, "|");
3634                                         }
3635                                         strcat(ret->recp_internet, this_recp);
3636                                 }
3637                                 break;
3638                         case MES_IGNET:
3639                                 ++ret->num_ignet;
3640                                 if (!IsEmptyStr(ret->recp_ignet)) {
3641                                         strcat(ret->recp_ignet, "|");
3642                                 }
3643                                 strcat(ret->recp_ignet, this_recp);
3644                                 break;
3645                         case MES_ERROR:
3646                                 ++ret->num_error;
3647                                 invalid = 1;
3648                                 break;
3649                 }
3650                 if (invalid) {
3651                         if (IsEmptyStr(errmsg)) {
3652                                 snprintf(append, sizeof append, "Invalid recipient: %s", this_recp);
3653                         }
3654                         else {
3655                                 snprintf(append, sizeof append, "%s", errmsg);
3656                         }
3657                         if ( (strlen(ret->errormsg) + strlen(append) + 3) < SIZ) {
3658                                 if (!IsEmptyStr(ret->errormsg)) {
3659                                         strcat(ret->errormsg, "; ");
3660                                 }
3661                                 strcat(ret->errormsg, append);
3662                         }
3663                 }
3664                 else {
3665                         if (IsEmptyStr(ret->display_recp)) {
3666                                 strcpy(append, this_recp);
3667                         }
3668                         else {
3669                                 snprintf(append, sizeof append, ", %s", this_recp);
3670                         }
3671                         if ( (strlen(ret->display_recp)+strlen(append)) < SIZ) {
3672                                 strcat(ret->display_recp, append);
3673                         }
3674                 }
3675         }
3676
3677         if ((ret->num_local + ret->num_internet + ret->num_ignet +
3678            ret->num_room + ret->num_error) == 0) {
3679                 ret->num_error = (-1);
3680                 strcpy(ret->errormsg, "No recipients specified.");
3681         }
3682
3683         CtdlLogPrintf(CTDL_DEBUG, "validate_recipients()\n");
3684         CtdlLogPrintf(CTDL_DEBUG, " local: %d <%s>\n", ret->num_local, ret->recp_local);
3685         CtdlLogPrintf(CTDL_DEBUG, "  room: %d <%s>\n", ret->num_room, ret->recp_room);
3686         CtdlLogPrintf(CTDL_DEBUG, "  inet: %d <%s>\n", ret->num_internet, ret->recp_internet);
3687         CtdlLogPrintf(CTDL_DEBUG, " ignet: %d <%s>\n", ret->num_ignet, ret->recp_ignet);
3688         CtdlLogPrintf(CTDL_DEBUG, " error: %d <%s>\n", ret->num_error, ret->errormsg);
3689
3690         free(recipients);
3691         return(ret);
3692 }
3693
3694
3695 /*
3696  * Destructor for struct recptypes
3697  */
3698 void free_recipients(struct recptypes *valid) {
3699
3700         if (valid == NULL) {
3701                 return;
3702         }
3703
3704         if (valid->recptypes_magic != RECPTYPES_MAGIC) {
3705                 CtdlLogPrintf(CTDL_EMERG, "Attempt to call free_recipients() on some other data type!\n");
3706                 abort();
3707         }
3708
3709         if (valid->errormsg != NULL)            free(valid->errormsg);
3710         if (valid->recp_local != NULL)          free(valid->recp_local);
3711         if (valid->recp_internet != NULL)       free(valid->recp_internet);
3712         if (valid->recp_ignet != NULL)          free(valid->recp_ignet);
3713         if (valid->recp_room != NULL)           free(valid->recp_room);
3714         if (valid->display_recp != NULL)        free(valid->display_recp);
3715         if (valid->bounce_to != NULL)           free(valid->bounce_to);
3716         if (valid->envelope_from != NULL)       free(valid->envelope_from);
3717         free(valid);
3718 }
3719
3720
3721
3722 /*
3723  * message entry  -  mode 0 (normal)
3724  */
3725 void cmd_ent0(char *entargs)
3726 {
3727         int post = 0;
3728         char recp[SIZ];
3729         char cc[SIZ];
3730         char bcc[SIZ];
3731         char supplied_euid[128];
3732         int anon_flag = 0;
3733         int format_type = 0;
3734         char newusername[256];
3735         char newuseremail[256];
3736         struct CtdlMessage *msg;
3737         int anonymous = 0;
3738         char errmsg[SIZ];
3739         int err = 0;
3740         struct recptypes *valid = NULL;
3741         struct recptypes *valid_to = NULL;
3742         struct recptypes *valid_cc = NULL;
3743         struct recptypes *valid_bcc = NULL;
3744         char subject[SIZ];
3745         int subject_required = 0;
3746         int do_confirm = 0;
3747         long msgnum;
3748         int i, j;
3749         char buf[256];
3750         int newuseremail_ok = 0;
3751         char references[SIZ];
3752         char *ptr;
3753
3754         unbuffer_output();
3755
3756         post = extract_int(entargs, 0);
3757         extract_token(recp, entargs, 1, '|', sizeof recp);
3758         anon_flag = extract_int(entargs, 2);
3759         format_type = extract_int(entargs, 3);
3760         extract_token(subject, entargs, 4, '|', sizeof subject);
3761         extract_token(newusername, entargs, 5, '|', sizeof newusername);
3762         do_confirm = extract_int(entargs, 6);
3763         extract_token(cc, entargs, 7, '|', sizeof cc);
3764         extract_token(bcc, entargs, 8, '|', sizeof bcc);
3765         switch(CC->room.QRdefaultview) {
3766                 case VIEW_NOTES:
3767                 case VIEW_WIKI:
3768                         extract_token(supplied_euid, entargs, 9, '|', sizeof supplied_euid);
3769                         break;
3770                 default:
3771                         supplied_euid[0] = 0;
3772                         break;
3773         }
3774         extract_token(newuseremail, entargs, 10, '|', sizeof newuseremail);
3775         extract_token(references, entargs, 11, '|', sizeof references);
3776         for (ptr=references; *ptr != 0; ++ptr) {
3777                 if (*ptr == '!') *ptr = '|';
3778         }
3779
3780         /* first check to make sure the request is valid. */
3781
3782         err = CtdlDoIHavePermissionToPostInThisRoom(errmsg, sizeof errmsg, NULL, POST_LOGGED_IN);
3783         if (err)
3784         {
3785                 cprintf("%d %s\n", err, errmsg);
3786                 return;
3787         }
3788
3789         /* Check some other permission type things. */
3790
3791         if (IsEmptyStr(newusername)) {
3792                 strcpy(newusername, CC->user.fullname);
3793         }
3794         if (  (CC->user.axlevel < 6)
3795            && (strcasecmp(newusername, CC->user.fullname))
3796            && (strcasecmp(newusername, CC->cs_inet_fn))
3797         ) {
3798                 cprintf("%d You don't have permission to author messages as '%s'.\n",
3799                         ERROR + HIGHER_ACCESS_REQUIRED,
3800                         newusername
3801                 );
3802                 return;
3803         }
3804
3805
3806         if (IsEmptyStr(newuseremail)) {
3807                 newuseremail_ok = 1;
3808         }
3809
3810         if (!IsEmptyStr(newuseremail)) {
3811                 if (!strcasecmp(newuseremail, CC->cs_inet_email)) {
3812                         newuseremail_ok = 1;
3813                 }
3814                 else if (!IsEmptyStr(CC->cs_inet_other_emails)) {
3815                         j = num_tokens(CC->cs_inet_other_emails, '|');
3816                         for (i=0; i<j; ++i) {
3817                                 extract_token(buf, CC->cs_inet_other_emails, i, '|', sizeof buf);
3818                                 if (!strcasecmp(newuseremail, buf)) {
3819                                         newuseremail_ok = 1;
3820                                 }
3821                         }
3822                 }
3823         }
3824
3825         if (!newuseremail_ok) {
3826                 cprintf("%d You don't have permission to author messages as '%s'.\n",
3827                         ERROR + HIGHER_ACCESS_REQUIRED,
3828                         newuseremail
3829                 );
3830                 return;
3831         }
3832
3833         CC->cs_flags |= CS_POSTING;
3834
3835         /* In mailbox rooms we have to behave a little differently --
3836          * make sure the user has specified at least one recipient.  Then
3837          * validate the recipient(s).  We do this for the Mail> room, as
3838          * well as any room which has the "Mailbox" view set.
3839          */
3840
3841         if (  ( (CC->room.QRflags & QR_MAILBOX) && (!strcasecmp(&CC->room.QRname[11], MAILROOM)) )
3842            || ( (CC->room.QRflags & QR_MAILBOX) && (CC->curr_view == VIEW_MAILBOX) )
3843         ) {
3844                 if (CC->user.axlevel < 2) {
3845                         strcpy(recp, "sysop");
3846                         strcpy(cc, "");
3847                         strcpy(bcc, "");
3848                 }
3849
3850                 valid_to = validate_recipients(recp, NULL, 0);
3851                 if (valid_to->num_error > 0) {
3852                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_to->errormsg);
3853                         free_recipients(valid_to);
3854                         return;
3855                 }
3856
3857                 valid_cc = validate_recipients(cc, NULL, 0);
3858                 if (valid_cc->num_error > 0) {
3859                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_cc->errormsg);
3860                         free_recipients(valid_to);
3861                         free_recipients(valid_cc);
3862                         return;
3863                 }
3864
3865                 valid_bcc = validate_recipients(bcc, NULL, 0);
3866                 if (valid_bcc->num_error > 0) {
3867                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_bcc->errormsg);
3868                         free_recipients(valid_to);
3869                         free_recipients(valid_cc);
3870                         free_recipients(valid_bcc);
3871                         return;
3872                 }
3873
3874                 /* Recipient required, but none were specified */
3875                 if ( (valid_to->num_error < 0) && (valid_cc->num_error < 0) && (valid_bcc->num_error < 0) ) {
3876                         free_recipients(valid_to);
3877                         free_recipients(valid_cc);
3878                         free_recipients(valid_bcc);
3879                         cprintf("%d At least one recipient is required.\n", ERROR + NO_SUCH_USER);
3880                         return;
3881                 }
3882
3883                 if (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0) {
3884                         if (CtdlCheckInternetMailPermission(&CC->user)==0) {
3885                                 cprintf("%d You do not have permission "
3886                                         "to send Internet mail.\n",
3887                                         ERROR + HIGHER_ACCESS_REQUIRED);
3888                                 free_recipients(valid_to);
3889                                 free_recipients(valid_cc);
3890                                 free_recipients(valid_bcc);
3891                                 return;
3892                         }
3893                 }
3894
3895                 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)
3896                    && (CC->user.axlevel < 4) ) {
3897                         cprintf("%d Higher access required for network mail.\n",
3898                                 ERROR + HIGHER_ACCESS_REQUIRED);
3899                         free_recipients(valid_to);
3900                         free_recipients(valid_cc);
3901                         free_recipients(valid_bcc);
3902                         return;
3903                 }
3904
3905                 if ((RESTRICT_INTERNET == 1)
3906                     && (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0)
3907                     && ((CC->user.flags & US_INTERNET) == 0)
3908                     && (!CC->internal_pgm)) {
3909                         cprintf("%d You don't have access to Internet mail.\n",
3910                                 ERROR + HIGHER_ACCESS_REQUIRED);
3911                         free_recipients(valid_to);
3912                         free_recipients(valid_cc);
3913                         free_recipients(valid_bcc);
3914                         return;
3915                 }
3916
3917         }
3918
3919         /* Is this a room which has anonymous-only or anonymous-option? */
3920         anonymous = MES_NORMAL;
3921         if (CC->room.QRflags & QR_ANONONLY) {
3922                 anonymous = MES_ANONONLY;
3923         }
3924         if (CC->room.QRflags & QR_ANONOPT) {
3925                 if (anon_flag == 1) {   /* only if the user requested it */
3926                         anonymous = MES_ANONOPT;
3927                 }
3928         }
3929
3930         if ((CC->room.QRflags & QR_MAILBOX) == 0) {
3931                 recp[0] = 0;
3932         }
3933
3934         /* Recommend to the client that the use of a message subject is
3935          * strongly recommended in this room, if either the SUBJECTREQ flag
3936          * is set, or if there is one or more Internet email recipients.
3937          */
3938         if (CC->room.QRflags2 & QR2_SUBJECTREQ) subject_required = 1;
3939         if ((valid_to)  && (valid_to->num_internet > 0))        subject_required = 1;
3940         if ((valid_cc)  && (valid_cc->num_internet > 0))        subject_required = 1;
3941         if ((valid_bcc) && (valid_bcc->num_internet > 0))       subject_required = 1;
3942
3943         /* If we're only checking the validity of the request, return
3944          * success without creating the message.
3945          */
3946         if (post == 0) {
3947                 cprintf("%d %s|%d\n", CIT_OK,
3948                         ((valid_to != NULL) ? valid_to->display_recp : ""),
3949                         subject_required);
3950                 free_recipients(valid_to);
3951                 free_recipients(valid_cc);
3952                 free_recipients(valid_bcc);
3953                 return;
3954         }
3955
3956         /* We don't need these anymore because we'll do it differently below */
3957         free_recipients(valid_to);
3958         free_recipients(valid_cc);
3959         free_recipients(valid_bcc);
3960
3961         /* Read in the message from the client. */
3962         if (do_confirm) {
3963                 cprintf("%d send message\n", START_CHAT_MODE);
3964         } else {
3965                 cprintf("%d send message\n", SEND_LISTING);
3966         }
3967
3968         msg = CtdlMakeMessage(&CC->user, recp, cc,
3969                 CC->room.QRname, anonymous, format_type,
3970                 newusername, newuseremail, subject,
3971                 ((!IsEmptyStr(supplied_euid)) ? supplied_euid : NULL),
3972                 NULL, references);
3973
3974         /* Put together one big recipients struct containing to/cc/bcc all in
3975          * one.  This is for the envelope.
3976          */
3977         char *all_recps = malloc(SIZ * 3);
3978         strcpy(all_recps, recp);
3979         if (!IsEmptyStr(cc)) {
3980                 if (!IsEmptyStr(all_recps)) {
3981                         strcat(all_recps, ",");
3982                 }
3983                 strcat(all_recps, cc);
3984         }
3985         if (!IsEmptyStr(bcc)) {
3986                 if (!IsEmptyStr(all_recps)) {
3987                         strcat(all_recps, ",");
3988                 }
3989                 strcat(all_recps, bcc);
3990         }
3991         if (!IsEmptyStr(all_recps)) {
3992                 valid = validate_recipients(all_recps, NULL, 0);
3993         }
3994         else {
3995                 valid = NULL;
3996         }
3997         free(all_recps);
3998
3999         if (msg != NULL) {
4000                 msgnum = CtdlSubmitMsg(msg, valid, "", QP_EADDR);
4001
4002                 if (do_confirm) {
4003                         cprintf("%ld\n", msgnum);
4004                         if (msgnum >= 0L) {
4005                                 cprintf("Message accepted.\n");
4006                         }
4007                         else {
4008                                 cprintf("Internal error.\n");
4009                         }
4010                         if (msg->cm_fields['E'] != NULL) {
4011                                 cprintf("%s\n", msg->cm_fields['E']);
4012                         } else {
4013                                 cprintf("\n");
4014                         }
4015                         cprintf("000\n");
4016                 }
4017
4018                 CtdlFreeMessage(msg);
4019         }
4020         if (valid != NULL) {
4021                 free_recipients(valid);
4022         }
4023         return;
4024 }
4025
4026
4027
4028 /*
4029  * API function to delete messages which match a set of criteria
4030  * (returns the actual number of messages deleted)
4031  */
4032 int CtdlDeleteMessages(char *room_name,         /* which room */
4033                         long *dmsgnums,         /* array of msg numbers to be deleted */
4034                         int num_dmsgnums,       /* number of msgs to be deleted, or 0 for "any" */
4035                         char *content_type      /* or "" for any.  regular expressions expected. */
4036 )
4037 {
4038         struct ctdlroom qrbuf;
4039         struct cdbdata *cdbfr;
4040         long *msglist = NULL;
4041         long *dellist = NULL;
4042         int num_msgs = 0;
4043         int i, j;
4044         int num_deleted = 0;
4045         int delete_this;
4046         struct MetaData smi;
4047         regex_t re;
4048         regmatch_t pm;
4049         int need_to_free_re = 0;
4050
4051         if (content_type) if (!IsEmptyStr(content_type)) {
4052                 regcomp(&re, content_type, 0);
4053                 need_to_free_re = 1;
4054         }
4055         CtdlLogPrintf(CTDL_DEBUG, "CtdlDeleteMessages(%s, %d msgs, %s)\n",
4056                 room_name, num_dmsgnums, content_type);
4057
4058         /* get room record, obtaining a lock... */
4059         if (lgetroom(&qrbuf, room_name) != 0) {
4060                 CtdlLogPrintf(CTDL_ERR, "CtdlDeleteMessages(): Room <%s> not found\n",
4061                         room_name);
4062                 if (need_to_free_re) regfree(&re);
4063                 return (0);     /* room not found */
4064         }
4065         cdbfr = cdb_fetch(CDB_MSGLISTS, &qrbuf.QRnumber, sizeof(long));
4066
4067         if (cdbfr != NULL) {
4068                 dellist = malloc(cdbfr->len);
4069                 msglist = (long *) cdbfr->ptr;
4070                 cdbfr->ptr = NULL;      /* CtdlDeleteMessages() now owns this memory */
4071                 num_msgs = cdbfr->len / sizeof(long);
4072                 cdb_free(cdbfr);
4073         }
4074         if (num_msgs > 0) {
4075                 for (i = 0; i < num_msgs; ++i) {
4076                         delete_this = 0x00;
4077
4078                         /* Set/clear a bit for each criterion */
4079
4080                         /* 0 messages in the list or a null list means that we are
4081                          * interested in deleting any messages which meet the other criteria.
4082                          */
4083                         if ((num_dmsgnums == 0) || (dmsgnums == NULL)) {
4084                                 delete_this |= 0x01;
4085                         }
4086                         else {
4087                                 for (j=0; j<num_dmsgnums; ++j) {
4088                                         if (msglist[i] == dmsgnums[j]) {
4089                                                 delete_this |= 0x01;
4090                                         }
4091                                 }
4092                         }
4093
4094                         if (IsEmptyStr(content_type)) {
4095                                 delete_this |= 0x02;
4096                         } else {
4097                                 GetMetaData(&smi, msglist[i]);
4098                                 if (regexec(&re, smi.meta_content_type, 1, &pm, 0) == 0) {
4099                                         delete_this |= 0x02;
4100                                 }
4101                         }
4102
4103                         /* Delete message only if all bits are set */
4104                         if (delete_this == 0x03) {
4105                                 dellist[num_deleted++] = msglist[i];
4106                                 msglist[i] = 0L;
4107                         }
4108                 }
4109
4110                 num_msgs = sort_msglist(msglist, num_msgs);
4111                 cdb_store(CDB_MSGLISTS, &qrbuf.QRnumber, (int)sizeof(long),
4112                           msglist, (int)(num_msgs * sizeof(long)));
4113
4114                 qrbuf.QRhighest = msglist[num_msgs - 1];
4115         }
4116         lputroom(&qrbuf);
4117
4118         /* Go through the messages we pulled out of the index, and decrement
4119          * their reference counts by 1.  If this is the only room the message
4120          * was in, the reference count will reach zero and the message will
4121          * automatically be deleted from the database.  We do this in a
4122          * separate pass because there might be plug-in hooks getting called,
4123          * and we don't want that happening during an S_ROOMS critical
4124          * section.
4125          */
4126         if (num_deleted) for (i=0; i<num_deleted; ++i) {
4127                 PerformDeleteHooks(qrbuf.QRname, dellist[i]);
4128                 AdjRefCount(dellist[i], -1);
4129         }
4130
4131         /* Now free the memory we used, and go away. */
4132         if (msglist != NULL) free(msglist);
4133         if (dellist != NULL) free(dellist);
4134         CtdlLogPrintf(CTDL_DEBUG, "%d message(s) deleted.\n", num_deleted);
4135         if (need_to_free_re) regfree(&re);
4136         return (num_deleted);
4137 }
4138
4139
4140
4141 /*
4142  * Check whether the current user has permission to delete messages from
4143  * the current room (returns 1 for yes, 0 for no)
4144  */
4145 int CtdlDoIHavePermissionToDeleteMessagesFromThisRoom(void) {
4146         int ra;
4147         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
4148         if (ra & UA_DELETEALLOWED) return(1);
4149         return(0);
4150 }
4151
4152
4153
4154
4155 /*
4156  * Delete message from current room
4157  */
4158 void cmd_dele(char *args)
4159 {
4160         int num_deleted;
4161         int i;
4162         char msgset[SIZ];
4163         char msgtok[32];
4164         long *msgs;
4165         int num_msgs = 0;
4166
4167         extract_token(msgset, args, 0, '|', sizeof msgset);
4168         num_msgs = num_tokens(msgset, ',');
4169         if (num_msgs < 1) {
4170                 cprintf("%d Nothing to do.\n", CIT_OK);
4171                 return;
4172         }
4173
4174         if (CtdlDoIHavePermissionToDeleteMessagesFromThisRoom() == 0) {
4175                 cprintf("%d Higher access required.\n",
4176                         ERROR + HIGHER_ACCESS_REQUIRED);
4177                 return;
4178         }
4179
4180         /*
4181          * Build our message set to be moved/copied
4182          */
4183         msgs = malloc(num_msgs * sizeof(long));
4184         for (i=0; i<num_msgs; ++i) {
4185                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4186                 msgs[i] = atol(msgtok);
4187         }
4188
4189         num_deleted = CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4190         free(msgs);
4191
4192         if (num_deleted) {
4193                 cprintf("%d %d message%s deleted.\n", CIT_OK,
4194                         num_deleted, ((num_deleted != 1) ? "s" : ""));
4195         } else {
4196                 cprintf("%d Message not found.\n", ERROR + MESSAGE_NOT_FOUND);
4197         }
4198 }
4199
4200
4201
4202
4203 /*
4204  * move or copy a message to another room
4205  */
4206 void cmd_move(char *args)
4207 {
4208         char msgset[SIZ];
4209         char msgtok[32];
4210         long *msgs;
4211         int num_msgs = 0;
4212
4213         char targ[ROOMNAMELEN];
4214         struct ctdlroom qtemp;
4215         int err;
4216         int is_copy = 0;
4217         int ra;
4218         int permit = 0;
4219         int i;
4220
4221         extract_token(msgset, args, 0, '|', sizeof msgset);
4222         num_msgs = num_tokens(msgset, ',');
4223         if (num_msgs < 1) {
4224                 cprintf("%d Nothing to do.\n", CIT_OK);
4225                 return;
4226         }
4227
4228         extract_token(targ, args, 1, '|', sizeof targ);
4229         convert_room_name_macros(targ, sizeof targ);
4230         targ[ROOMNAMELEN - 1] = 0;
4231         is_copy = extract_int(args, 2);
4232
4233         if (getroom(&qtemp, targ) != 0) {
4234                 cprintf("%d '%s' does not exist.\n", ERROR + ROOM_NOT_FOUND, targ);
4235                 return;
4236         }
4237
4238         if (!strcasecmp(qtemp.QRname, CC->room.QRname)) {
4239                 cprintf("%d Source and target rooms are the same.\n", ERROR + ALREADY_EXISTS);
4240                 return;
4241         }
4242
4243         getuser(&CC->user, CC->curr_user);
4244         CtdlRoomAccess(&qtemp, &CC->user, &ra, NULL);
4245
4246         /* Check for permission to perform this operation.
4247          * Remember: "CC->room" is source, "qtemp" is target.
4248          */
4249         permit = 0;
4250
4251         /* Aides can move/copy */
4252         if (CC->user.axlevel >= 6) permit = 1;
4253
4254         /* Room aides can move/copy */
4255         if (CC->user.usernum == CC->room.QRroomaide) permit = 1;
4256
4257         /* Permit move/copy from personal rooms */
4258         if ((CC->room.QRflags & QR_MAILBOX)
4259            && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
4260
4261         /* Permit only copy from public to personal room */
4262         if ( (is_copy)
4263            && (!(CC->room.QRflags & QR_MAILBOX))
4264            && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
4265
4266         /* Permit message removal from collaborative delete rooms */
4267         if (CC->room.QRflags2 & QR2_COLLABDEL) permit = 1;
4268
4269         /* Users allowed to post into the target room may move into it too. */
4270         if ((CC->room.QRflags & QR_MAILBOX) &&
4271             (qtemp.QRflags & UA_POSTALLOWED))  permit = 1;
4272
4273         /* User must have access to target room */
4274         if (!(ra & UA_KNOWN))  permit = 0;
4275
4276         if (!permit) {
4277                 cprintf("%d Higher access required.\n",
4278                         ERROR + HIGHER_ACCESS_REQUIRED);
4279                 return;
4280         }
4281
4282         /*
4283          * Build our message set to be moved/copied
4284          */
4285         msgs = malloc(num_msgs * sizeof(long));
4286         for (i=0; i<num_msgs; ++i) {
4287                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4288                 msgs[i] = atol(msgtok);
4289         }
4290
4291         /*
4292          * Do the copy
4293          */
4294         err = CtdlSaveMsgPointersInRoom(targ, msgs, num_msgs, 1, NULL);
4295         if (err != 0) {
4296                 cprintf("%d Cannot store message(s) in %s: error %d\n",
4297                         err, targ, err);
4298                 free(msgs);
4299                 return;
4300         }
4301
4302         /* Now delete the message from the source room,
4303          * if this is a 'move' rather than a 'copy' operation.
4304          */
4305         if (is_copy == 0) {
4306                 CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4307         }
4308         free(msgs);
4309
4310         cprintf("%d Message(s) %s.\n", CIT_OK, (is_copy ? "copied" : "moved") );
4311 }
4312
4313
4314
4315 /*
4316  * GetMetaData()  -  Get the supplementary record for a message
4317  */
4318 void GetMetaData(struct MetaData *smibuf, long msgnum)
4319 {
4320
4321         struct cdbdata *cdbsmi;
4322         long TheIndex;
4323
4324         memset(smibuf, 0, sizeof(struct MetaData));
4325         smibuf->meta_msgnum = msgnum;
4326         smibuf->meta_refcount = 1;      /* Default reference count is 1 */
4327
4328         /* Use the negative of the message number for its supp record index */
4329         TheIndex = (0L - msgnum);
4330
4331         cdbsmi = cdb_fetch(CDB_MSGMAIN, &TheIndex, sizeof(long));
4332         if (cdbsmi == NULL) {
4333                 return;         /* record not found; go with defaults */
4334         }
4335         memcpy(smibuf, cdbsmi->ptr,
4336                ((cdbsmi->len > sizeof(struct MetaData)) ?
4337                 sizeof(struct MetaData) : cdbsmi->len));
4338         cdb_free(cdbsmi);
4339         return;
4340 }
4341
4342
4343 /*
4344  * PutMetaData()  -  (re)write supplementary record for a message
4345  */
4346 void PutMetaData(struct MetaData *smibuf)
4347 {
4348         long TheIndex;
4349
4350         /* Use the negative of the message number for the metadata db index */
4351         TheIndex = (0L - smibuf->meta_msgnum);
4352
4353         cdb_store(CDB_MSGMAIN,
4354                   &TheIndex, (int)sizeof(long),
4355                   smibuf, (int)sizeof(struct MetaData));
4356
4357 }
4358
4359 /*
4360  * AdjRefCount  -  submit an adjustment to the reference count for a message.
4361  *                 (These are just queued -- we actually process them later.)
4362  */
4363 void AdjRefCount(long msgnum, int incr)
4364 {
4365         struct arcq new_arcq;
4366         int rv = 0;
4367
4368         begin_critical_section(S_SUPPMSGMAIN);
4369         if (arcfp == NULL) {
4370                 arcfp = fopen(file_arcq, "ab+");
4371         }
4372         end_critical_section(S_SUPPMSGMAIN);
4373
4374         /* msgnum < 0 means that we're trying to close the file */
4375         if (msgnum < 0) {
4376                 CtdlLogPrintf(CTDL_DEBUG, "Closing the AdjRefCount queue file\n");
4377                 begin_critical_section(S_SUPPMSGMAIN);
4378                 if (arcfp != NULL) {
4379                         fclose(arcfp);
4380                         arcfp = NULL;
4381                 }
4382                 end_critical_section(S_SUPPMSGMAIN);
4383                 return;
4384         }
4385
4386         /*
4387          * If we can't open the queue, perform the operation synchronously.
4388          */
4389         if (arcfp == NULL) {
4390                 TDAP_AdjRefCount(msgnum, incr);
4391                 return;
4392         }
4393
4394         new_arcq.arcq_msgnum = msgnum;
4395         new_arcq.arcq_delta = incr;
4396         rv = fwrite(&new_arcq, sizeof(struct arcq), 1, arcfp);
4397         fflush(arcfp);
4398
4399         return;
4400 }
4401
4402
4403 /*
4404  * TDAP_ProcessAdjRefCountQueue()
4405  *
4406  * Process the queue of message count adjustments that was created by calls
4407  * to AdjRefCount() ... by reading the queue and calling TDAP_AdjRefCount()
4408  * for each one.  This should be an "off hours" operation.
4409  */
4410 int TDAP_ProcessAdjRefCountQueue(void)
4411 {
4412         char file_arcq_temp[PATH_MAX];
4413         int r;
4414         FILE *fp;
4415         struct arcq arcq_rec;
4416         int num_records_processed = 0;
4417
4418         snprintf(file_arcq_temp, sizeof file_arcq_temp, "%s.%04x", file_arcq, rand());
4419
4420         begin_critical_section(S_SUPPMSGMAIN);
4421         if (arcfp != NULL) {
4422                 fclose(arcfp);
4423                 arcfp = NULL;
4424         }
4425
4426         r = link(file_arcq, file_arcq_temp);
4427         if (r != 0) {
4428                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4429                 end_critical_section(S_SUPPMSGMAIN);
4430                 return(num_records_processed);
4431         }
4432
4433         unlink(file_arcq);
4434         end_critical_section(S_SUPPMSGMAIN);
4435
4436         fp = fopen(file_arcq_temp, "rb");
4437         if (fp == NULL) {
4438                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4439                 return(num_records_processed);
4440         }
4441
4442         while (fread(&arcq_rec, sizeof(struct arcq), 1, fp) == 1) {
4443                 TDAP_AdjRefCount(arcq_rec.arcq_msgnum, arcq_rec.arcq_delta);
4444                 ++num_records_processed;
4445         }
4446
4447         fclose(fp);
4448         r = unlink(file_arcq_temp);
4449         if (r != 0) {
4450                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4451         }
4452
4453         return(num_records_processed);
4454 }
4455
4456
4457
4458 /*
4459  * TDAP_AdjRefCount  -  adjust the reference count for a message.
4460  *                      This one does it "for real" because it's called by
4461  *                      the autopurger function that processes the queue
4462  *                      created by AdjRefCount().   If a message's reference
4463  *                      count becomes zero, we also delete the message from
4464  *                      disk and de-index it.
4465  */
4466 void TDAP_AdjRefCount(long msgnum, int incr)
4467 {
4468
4469         struct MetaData smi;
4470         long delnum;
4471
4472         /* This is a *tight* critical section; please keep it that way, as
4473          * it may get called while nested in other critical sections.
4474          * Complicating this any further will surely cause deadlock!
4475          */
4476         begin_critical_section(S_SUPPMSGMAIN);
4477         GetMetaData(&smi, msgnum);
4478         smi.meta_refcount += incr;
4479         PutMetaData(&smi);
4480         end_critical_section(S_SUPPMSGMAIN);
4481         CtdlLogPrintf(CTDL_DEBUG, "msg %ld ref count delta %+d, is now %d\n",
4482                 msgnum, incr, smi.meta_refcount);
4483
4484         /* If the reference count is now zero, delete the message
4485          * (and its supplementary record as well).
4486          */
4487         if (smi.meta_refcount == 0) {
4488                 CtdlLogPrintf(CTDL_DEBUG, "Deleting message <%ld>\n", msgnum);
4489
4490                 /* Call delete hooks with NULL room to show it has gone altogether */
4491                 PerformDeleteHooks(NULL, msgnum);
4492
4493                 /* Remove from message base */
4494                 delnum = msgnum;
4495                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
4496                 cdb_delete(CDB_BIGMSGS, &delnum, (int)sizeof(long));
4497
4498                 /* Remove metadata record */
4499                 delnum = (0L - msgnum);
4500                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
4501         }
4502
4503 }
4504
4505 /*
4506  * Write a generic object to this room
4507  *
4508  * Note: this could be much more efficient.  Right now we use two temporary
4509  * files, and still pull the message into memory as with all others.
4510  */
4511 void CtdlWriteObject(char *req_room,                    /* Room to stuff it in */
4512                         char *content_type,             /* MIME type of this object */
4513                         char *raw_message,              /* Data to be written */
4514                         off_t raw_length,               /* Size of raw_message */
4515                         struct ctdluser *is_mailbox,    /* Mailbox room? */
4516                         int is_binary,                  /* Is encoding necessary? */
4517                         int is_unique,                  /* Del others of this type? */
4518                         unsigned int flags              /* Internal save flags */
4519                         )
4520 {
4521
4522         struct ctdlroom qrbuf;
4523         char roomname[ROOMNAMELEN];
4524         struct CtdlMessage *msg;
4525         char *encoded_message = NULL;
4526
4527         if (is_mailbox != NULL) {
4528                 MailboxName(roomname, sizeof roomname, is_mailbox, req_room);
4529         }
4530         else {
4531                 safestrncpy(roomname, req_room, sizeof(roomname));
4532         }
4533
4534         CtdlLogPrintf(CTDL_DEBUG, "Raw length is %ld\n", (long)raw_length);
4535
4536         if (is_binary) {
4537                 encoded_message = malloc((size_t) (((raw_length * 134) / 100) + 4096 ) );
4538         }
4539         else {
4540                 encoded_message = malloc((size_t)(raw_length + 4096));
4541         }
4542
4543         sprintf(encoded_message, "Content-type: %s\n", content_type);
4544
4545         if (is_binary) {
4546                 sprintf(&encoded_message[strlen(encoded_message)],
4547                         "Content-transfer-encoding: base64\n\n"
4548                 );
4549         }
4550         else {
4551                 sprintf(&encoded_message[strlen(encoded_message)],
4552                         "Content-transfer-encoding: 7bit\n\n"
4553                 );
4554         }
4555
4556         if (is_binary) {
4557                 CtdlEncodeBase64(
4558                         &encoded_message[strlen(encoded_message)],
4559                         raw_message,
4560                         (int)raw_length,
4561                         0
4562                 );
4563         }
4564         else {
4565                 memcpy(
4566                         &encoded_message[strlen(encoded_message)],
4567                         raw_message,
4568                         (int)(raw_length+1)
4569                 );
4570         }
4571
4572         CtdlLogPrintf(CTDL_DEBUG, "Allocating\n");
4573         msg = malloc(sizeof(struct CtdlMessage));
4574         memset(msg, 0, sizeof(struct CtdlMessage));
4575         msg->cm_magic = CTDLMESSAGE_MAGIC;
4576         msg->cm_anon_type = MES_NORMAL;
4577         msg->cm_format_type = 4;
4578         msg->cm_fields['A'] = strdup(CC->user.fullname);
4579         msg->cm_fields['O'] = strdup(req_room);
4580         msg->cm_fields['N'] = strdup(config.c_nodename);
4581         msg->cm_fields['H'] = strdup(config.c_humannode);
4582         msg->cm_flags = flags;
4583
4584         msg->cm_fields['M'] = encoded_message;
4585
4586         /* Create the requested room if we have to. */
4587         if (getroom(&qrbuf, roomname) != 0) {
4588                 create_room(roomname,
4589                         ( (is_mailbox != NULL) ? 5 : 3 ),
4590                         "", 0, 1, 0, VIEW_BBS);
4591         }
4592         /* If the caller specified this object as unique, delete all
4593          * other objects of this type that are currently in the room.
4594          */
4595         if (is_unique) {
4596                 CtdlLogPrintf(CTDL_DEBUG, "Deleted %d other msgs of this type\n",
4597                         CtdlDeleteMessages(roomname, NULL, 0, content_type)
4598                 );
4599         }
4600         /* Now write the data */
4601         CtdlSubmitMsg(msg, NULL, roomname, 0);
4602         CtdlFreeMessage(msg);
4603 }
4604
4605
4606
4607
4608
4609
4610 void CtdlGetSysConfigBackend(long msgnum, void *userdata) {
4611         config_msgnum = msgnum;
4612 }
4613
4614
4615 char *CtdlGetSysConfig(char *sysconfname) {
4616         char hold_rm[ROOMNAMELEN];
4617         long msgnum;
4618         char *conf;
4619         struct CtdlMessage *msg;
4620         char buf[SIZ];
4621
4622         strcpy(hold_rm, CC->room.QRname);
4623         if (getroom(&CC->room, SYSCONFIGROOM) != 0) {
4624                 getroom(&CC->room, hold_rm);
4625                 return NULL;
4626         }
4627
4628
4629         /* We want the last (and probably only) config in this room */
4630         begin_critical_section(S_CONFIG);
4631         config_msgnum = (-1L);
4632         CtdlForEachMessage(MSGS_LAST, 1, NULL, sysconfname, NULL,
4633                 CtdlGetSysConfigBackend, NULL);
4634         msgnum = config_msgnum;
4635         end_critical_section(S_CONFIG);
4636
4637         if (msgnum < 0L) {
4638                 conf = NULL;
4639         }
4640         else {
4641                 msg = CtdlFetchMessage(msgnum, 1);
4642                 if (msg != NULL) {
4643                         conf = strdup(msg->cm_fields['M']);
4644                         CtdlFreeMessage(msg);
4645                 }
4646                 else {
4647                         conf = NULL;
4648                 }
4649         }
4650
4651         getroom(&CC->room, hold_rm);
4652
4653         if (conf != NULL) do {
4654                 extract_token(buf, conf, 0, '\n', sizeof buf);
4655                 strcpy(conf, &conf[strlen(buf)+1]);
4656         } while ( (!IsEmptyStr(conf)) && (!IsEmptyStr(buf)) );
4657
4658         return(conf);
4659 }
4660
4661
4662 void CtdlPutSysConfig(char *sysconfname, char *sysconfdata) {
4663         CtdlWriteObject(SYSCONFIGROOM, sysconfname, sysconfdata, (strlen(sysconfdata)+1), NULL, 0, 1, 0);
4664 }
4665
4666
4667 /*
4668  * Determine whether a given Internet address belongs to the current user
4669  */
4670 int CtdlIsMe(char *addr, int addr_buf_len)
4671 {
4672         struct recptypes *recp;
4673         int i;
4674
4675         recp = validate_recipients(addr, NULL, 0);
4676         if (recp == NULL) return(0);
4677
4678         if (recp->num_local == 0) {
4679                 free_recipients(recp);
4680                 return(0);
4681         }
4682
4683         for (i=0; i<recp->num_local; ++i) {
4684                 extract_token(addr, recp->recp_local, i, '|', addr_buf_len);
4685                 if (!strcasecmp(addr, CC->user.fullname)) {
4686                         free_recipients(recp);
4687                         return(1);
4688                 }
4689         }
4690
4691         free_recipients(recp);
4692         return(0);
4693 }
4694
4695
4696 /*
4697  * Citadel protocol command to do the same
4698  */
4699 void cmd_isme(char *argbuf) {
4700         char addr[256];
4701
4702         if (CtdlAccessCheck(ac_logged_in)) return;
4703         extract_token(addr, argbuf, 0, '|', sizeof addr);
4704
4705         if (CtdlIsMe(addr, sizeof addr)) {
4706                 cprintf("%d %s\n", CIT_OK, addr);
4707         }
4708         else {
4709                 cprintf("%d Not you.\n", ERROR + ILLEGAL_VALUE);
4710         }
4711
4712 }
4713
4714
4715 /*****************************************************************************/
4716 /*                      MODULE INITIALIZATION STUFF                          */
4717 /*****************************************************************************/
4718
4719 CTDL_MODULE_INIT(msgbase)
4720 {
4721         CtdlRegisterProtoHook(cmd_msgs, "MSGS", "Output a list of messages in the current room");
4722         CtdlRegisterProtoHook(cmd_msg0, "MSG0", "Output a message in plain text format");
4723         CtdlRegisterProtoHook(cmd_msg2, "MSG2", "Output a message in RFC822 format");
4724         CtdlRegisterProtoHook(cmd_msg3, "MSG3", "Output a message in raw format (deprecated)");
4725         CtdlRegisterProtoHook(cmd_msg4, "MSG4", "Output a message in the client's preferred format");
4726         CtdlRegisterProtoHook(cmd_msgp, "MSGP", "Select preferred format for MSG4 output");
4727         CtdlRegisterProtoHook(cmd_opna, "OPNA", "Open an attachment for download");
4728         CtdlRegisterProtoHook(cmd_dlat, "DLAT", "Download an attachment");
4729         CtdlRegisterProtoHook(cmd_ent0, "ENT0", "Enter a message");
4730         CtdlRegisterProtoHook(cmd_dele, "DELE", "Delete a message");
4731         CtdlRegisterProtoHook(cmd_move, "MOVE", "Move or copy a message to another room");
4732         CtdlRegisterProtoHook(cmd_isme, "ISME", "Determine whether an email address belongs to a user");
4733
4734         /* return our Subversion id for the Log */
4735         return "$Id$";
4736 }