citadel/msgbase.c

   1 /*
   2  * $Id$
   3  *
   4  * Implements the message store.
   5  *
   6  */
   7
   8 #include "sysdep.h"
   9 #include <stdlib.h>
  10 #include <unistd.h>
  11 #include <stdio.h>
  12 #include <fcntl.h>
  13
  14 #if TIME_WITH_SYS_TIME
  15 # include <sys/time.h>
  16 # include <time.h>
  17 #else
  18 # if HAVE_SYS_TIME_H
  19 #  include <sys/time.h>
  20 # else
  21 #  include <time.h>
  22 # endif
  23 #endif
  24
  25
  26 #include <ctype.h>
  27 #include <string.h>
  28 #include <limits.h>
  29 #include <errno.h>
  30 #include <stdarg.h>
  31 #include <sys/stat.h>
  32 #include <sys/types.h>
  33 #include <regex.h>
  34 #include <libcitadel.h>
  35 #include "citadel.h"
  36 #include "server.h"
  37 #include "serv_extensions.h"
  38 #include "database.h"
  39 #include "msgbase.h"
  40 #include "support.h"
  41 #include "sysdep_decls.h"
  42 #include "citserver.h"
  43 #include "room_ops.h"
  44 #include "user_ops.h"
  45 #include "file_ops.h"
  46 #include "config.h"
  47 #include "control.h"
  48 #include "genstamp.h"
  49 #include "internet_addressing.h"
  50 #include "euidindex.h"
  51 #include "journaling.h"
  52 #include "citadel_dirs.h"
  53 #include "clientsocket.h"
  54 #include "serv_network.h"
  55 #include "threads.h"
  56
  57 long config_msgnum;
  58 struct addresses_to_be_filed *atbf = NULL;
  59
  60 /* This temp file holds the queue of operations for AdjRefCount() */
  61 static FILE *arcfp = NULL;
  62
  63 /*
  64  * This really belongs in serv_network.c, but I don't know how to export
  65  * symbols between modules.
  66  */
  67 struct FilterList *filterlist = NULL;
  68
  69
  70 /*
  71  * These are the four-character field headers we use when outputting
  72  * messages in Citadel format (as opposed to RFC822 format).
  73  */
  74 char *msgkeys[] = {
  75         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  76         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  77         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  78         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  79         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  80         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  81         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  82         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  83         NULL,
  84         "from",
  85         NULL, NULL, NULL,
  86         "exti",
  87         "rfca",
  88         NULL,
  89         "hnod",
  90         "msgn",
  91         "jrnl",
  92         NULL, NULL,
  93         "text",
  94         "node",
  95         "room",
  96         "path",
  97         NULL,
  98         "rcpt",
  99         "spec",
 100         "time",
 101         "subj",
 102         NULL,
 103         NULL,
 104         NULL,
 105         "cccc",
 106         NULL
 107 };
 108
 109 /*
 110  * This function is self explanatory.
 111  * (What can I say, I'm in a weird mood today...)
 112  */
 113 void remove_any_whitespace_to_the_left_or_right_of_at_symbol(char *name)
 114 {
 115         int i;
 116
 117         for (i = 0; i < strlen(name); ++i) {
 118                 if (name[i] == '@') {
 119                         while (isspace(name[i - 1]) && i > 0) {
 120                                 strcpy(&name[i - 1], &name[i]);
 121                                 --i;
 122                         }
 123                         while (isspace(name[i + 1])) {
 124                                 strcpy(&name[i + 1], &name[i + 2]);
 125                         }
 126                 }
 127         }
 128 }
 129
 130
 131 /*
 132  * Aliasing for network mail.
 133  * (Error messages have been commented out, because this is a server.)
 134  */
 135 int alias(char *name)
 136 {                               /* process alias and routing info for mail */
 137         FILE *fp;
 138         int a, i;
 139         char aaa[SIZ], bbb[SIZ];
 140         char *ignetcfg = NULL;
 141         char *ignetmap = NULL;
 142         int at = 0;
 143         char node[64];
 144         char testnode[64];
 145         char buf[SIZ];
 146
 147         char original_name[256];
 148         safestrncpy(original_name, name, sizeof original_name);
 149
 150         striplt(name);
 151         remove_any_whitespace_to_the_left_or_right_of_at_symbol(name);
 152         stripallbut(name, '<', '>');
 153
 154         fp = fopen(file_mail_aliases, "r");
 155         if (fp == NULL) {
 156                 fp = fopen("/dev/null", "r");
 157         }
 158         if (fp == NULL) {
 159                 return (MES_ERROR);
 160         }
 161         strcpy(aaa, "");
 162         strcpy(bbb, "");
 163         while (fgets(aaa, sizeof aaa, fp) != NULL) {
 164                 while (isspace(name[0]))
 165                         strcpy(name, &name[1]);
 166                 aaa[strlen(aaa) - 1] = 0;
 167                 strcpy(bbb, "");
 168                 for (a = 0; a < strlen(aaa); ++a) {
 169                         if (aaa[a] == ',') {
 170                                 strcpy(bbb, &aaa[a + 1]);
 171                                 aaa[a] = 0;
 172                         }
 173                 }
 174                 if (!strcasecmp(name, aaa))
 175                         strcpy(name, bbb);
 176         }
 177         fclose(fp);
 178
 179         /* Hit the Global Address Book */
 180         if (CtdlDirectoryLookup(aaa, name, sizeof aaa) == 0) {
 181                 strcpy(name, aaa);
 182         }
 183
 184         if (strcasecmp(original_name, name)) {
 185                 CtdlLogPrintf(CTDL_INFO, "%s is being forwarded to %s\n", original_name, name);
 186         }
 187
 188         /* Change "user @ xxx" to "user" if xxx is an alias for this host */
 189         for (a=0; a<strlen(name); ++a) {
 190                 if (name[a] == '@') {
 191                         if (CtdlHostAlias(&name[a+1]) == hostalias_localhost) {
 192                                 name[a] = 0;
 193                                 CtdlLogPrintf(CTDL_INFO, "Changed to <%s>\n", name);
 194                         }
 195                 }
 196         }
 197
 198         /* determine local or remote type, see citadel.h */
 199         at = haschar(name, '@');
 200         if (at == 0) return(MES_LOCAL);         /* no @'s - local address */
 201         if (at > 1) return(MES_ERROR);          /* >1 @'s - invalid address */
 202         remove_any_whitespace_to_the_left_or_right_of_at_symbol(name);
 203
 204         /* figure out the delivery mode */
 205         extract_token(node, name, 1, '@', sizeof node);
 206
 207         /* If there are one or more dots in the nodename, we assume that it
 208          * is an FQDN and will attempt SMTP delivery to the Internet.
 209          */
 210         if (haschar(node, '.') > 0) {
 211                 return(MES_INTERNET);
 212         }
 213
 214         /* Otherwise we look in the IGnet maps for a valid Citadel node.
 215          * Try directly-connected nodes first...
 216          */
 217         ignetcfg = CtdlGetSysConfig(IGNETCFG);
 218         for (i=0; i<num_tokens(ignetcfg, '\n'); ++i) {
 219                 extract_token(buf, ignetcfg, i, '\n', sizeof buf);
 220                 extract_token(testnode, buf, 0, '|', sizeof testnode);
 221                 if (!strcasecmp(node, testnode)) {
 222                         free(ignetcfg);
 223                         return(MES_IGNET);
 224                 }
 225         }
 226         free(ignetcfg);
 227
 228         /*
 229          * Then try nodes that are two or more hops away.
 230          */
 231         ignetmap = CtdlGetSysConfig(IGNETMAP);
 232         for (i=0; i<num_tokens(ignetmap, '\n'); ++i) {
 233                 extract_token(buf, ignetmap, i, '\n', sizeof buf);
 234                 extract_token(testnode, buf, 0, '|', sizeof testnode);
 235                 if (!strcasecmp(node, testnode)) {
 236                         free(ignetmap);
 237                         return(MES_IGNET);
 238                 }
 239         }
 240         free(ignetmap);
 241
 242         /* If we get to this point it's an invalid node name */
 243         return (MES_ERROR);
 244 }
 245
 246
 247 /*
 248  * Back end for the MSGS command: output message number only.
 249  */
 250 void simple_listing(long msgnum, void *userdata)
 251 {
 252         cprintf("%ld\n", msgnum);
 253 }
 254
 255
 256
 257 /*
 258  * Back end for the MSGS command: output header summary.
 259  */
 260 void headers_listing(long msgnum, void *userdata)
 261 {
 262         struct CtdlMessage *msg;
 263
 264         msg = CtdlFetchMessage(msgnum, 0);
 265         if (msg == NULL) {
 266                 cprintf("%ld|0|||||\n", msgnum);
 267                 return;
 268         }
 269
 270         cprintf("%ld|%s|%s|%s|%s|%s|\n",
 271                 msgnum,
 272                 (msg->cm_fields['T'] ? msg->cm_fields['T'] : "0"),
 273                 (msg->cm_fields['A'] ? msg->cm_fields['A'] : ""),
 274                 (msg->cm_fields['N'] ? msg->cm_fields['N'] : ""),
 275                 (msg->cm_fields['F'] ? msg->cm_fields['F'] : ""),
 276                 (msg->cm_fields['U'] ? msg->cm_fields['U'] : "")
 277         );
 278         CtdlFreeMessage(msg);
 279 }
 280
 281
 282
 283 /* Determine if a given message matches the fields in a message template.
 284  * Return 0 for a successful match.
 285  */
 286 int CtdlMsgCmp(struct CtdlMessage *msg, struct CtdlMessage *template) {
 287         int i;
 288
 289         /* If there aren't any fields in the template, all messages will
 290          * match.
 291          */
 292         if (template == NULL) return(0);
 293
 294         /* Null messages are bogus. */
 295         if (msg == NULL) return(1);
 296
 297         for (i='A'; i<='Z'; ++i) {
 298                 if (template->cm_fields[i] != NULL) {
 299                         if (msg->cm_fields[i] == NULL) {
 300                                 return 1;
 301                         }
 302                         if (strcasecmp(msg->cm_fields[i],
 303                                 template->cm_fields[i])) return 1;
 304                 }
 305         }
 306
 307         /* All compares succeeded: we have a match! */
 308         return 0;
 309 }
 310
 311
 312
 313 /*
 314  * Retrieve the "seen" message list for the current room.
 315  */
 316 void CtdlGetSeen(char *buf, int which_set) {
 317         struct visit vbuf;
 318
 319         /* Learn about the user and room in question */
 320         CtdlGetRelationship(&vbuf, &CC->user, &CC->room);
 321
 322         if (which_set == ctdlsetseen_seen)
 323                 safestrncpy(buf, vbuf.v_seen, SIZ);
 324         if (which_set == ctdlsetseen_answered)
 325                 safestrncpy(buf, vbuf.v_answered, SIZ);
 326 }
 327
 328
 329
 330 /*
 331  * Manipulate the "seen msgs" string (or other message set strings)
 332  */
 333 void CtdlSetSeen(long *target_msgnums, int num_target_msgnums,
 334                 int target_setting, int which_set,
 335                 struct ctdluser *which_user, struct ctdlroom *which_room) {
 336         struct cdbdata *cdbfr;
 337         int i, j, k;
 338         int is_seen = 0;
 339         int was_seen = 0;
 340         long lo = (-1L);
 341         long hi = (-1L);
 342         long t = (-1L);
 343         int trimming = 0;
 344         struct visit vbuf;
 345         long *msglist;
 346         int num_msgs = 0;
 347         char vset[SIZ];
 348         char *is_set;   /* actually an array of booleans */
 349         int num_sets;
 350         int s;
 351         char setstr[SIZ], lostr[SIZ], histr[SIZ];
 352         size_t tmp;
 353
 354         /* Don't bother doing *anything* if we were passed a list of zero messages */
 355         if (num_target_msgnums < 1) {
 356                 return;
 357         }
 358
 359         CtdlLogPrintf(CTDL_DEBUG, "CtdlSetSeen(%d msgs starting with %ld, %d, %d)\n",
 360                 num_target_msgnums, target_msgnums[0],
 361                 target_setting, which_set);
 362
 363         /* Learn about the user and room in question */
 364         CtdlGetRelationship(&vbuf,
 365                 ((which_user != NULL) ? which_user : &CC->user),
 366                 ((which_room != NULL) ? which_room : &CC->room)
 367         );
 368
 369         /* Load the message list */
 370         cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
 371         if (cdbfr != NULL) {
 372                 msglist = (long *) cdbfr->ptr;
 373                 cdbfr->ptr = NULL;      /* CtdlSetSeen() now owns this memory */
 374                 num_msgs = cdbfr->len / sizeof(long);
 375                 cdb_free(cdbfr);
 376         } else {
 377                 return; /* No messages at all?  No further action. */
 378         }
 379
 380         is_set = malloc(num_msgs * sizeof(char));
 381         memset(is_set, 0, (num_msgs * sizeof(char)) );
 382
 383         /* Decide which message set we're manipulating */
 384         switch(which_set) {
 385                 case ctdlsetseen_seen:
 386                         safestrncpy(vset, vbuf.v_seen, sizeof vset);
 387                         break;
 388                 case ctdlsetseen_answered:
 389                         safestrncpy(vset, vbuf.v_answered, sizeof vset);
 390                         break;
 391         }
 392
 393         /* CtdlLogPrintf(CTDL_DEBUG, "before optimize: %s\n", vset); */
 394
 395         /* Translate the existing sequence set into an array of booleans */
 396         num_sets = num_tokens(vset, ',');
 397         for (s=0; s<num_sets; ++s) {
 398                 extract_token(setstr, vset, s, ',', sizeof setstr);
 399
 400                 extract_token(lostr, setstr, 0, ':', sizeof lostr);
 401                 if (num_tokens(setstr, ':') >= 2) {
 402                         extract_token(histr, setstr, 1, ':', sizeof histr);
 403                         if (!strcmp(histr, "*")) {
 404                                 snprintf(histr, sizeof histr, "%ld", LONG_MAX);
 405                         }
 406                 }
 407                 else {
 408                         strcpy(histr, lostr);
 409                 }
 410                 lo = atol(lostr);
 411                 hi = atol(histr);
 412
 413                 for (i = 0; i < num_msgs; ++i) {
 414                         if ((msglist[i] >= lo) && (msglist[i] <= hi)) {
 415                                 is_set[i] = 1;
 416                         }
 417                 }
 418         }
 419
 420         /* Now translate the array of booleans back into a sequence set */
 421         strcpy(vset, "");
 422         lo = (-1L);
 423         hi = (-1L);
 424
 425         for (i=0; i<num_msgs; ++i) {
 426
 427                 is_seen = is_set[i];    /* Default to existing setting */
 428
 429                 for (k=0; k<num_target_msgnums; ++k) {
 430                         if (msglist[i] == target_msgnums[k]) {
 431                                 is_seen = target_setting;
 432                         }
 433                 }
 434
 435                 if (is_seen) {
 436                         if (lo < 0L) lo = msglist[i];
 437                         hi = msglist[i];
 438                 }
 439
 440                 if (  ((is_seen == 0) && (was_seen == 1))
 441                    || ((is_seen == 1) && (i == num_msgs-1)) ) {
 442
 443                         /* begin trim-o-matic code */
 444                         j=9;
 445                         trimming = 0;
 446                         while ( (strlen(vset) + 20) > sizeof vset) {
 447                                 remove_token(vset, 0, ',');
 448                                 trimming = 1;
 449                                 if (j--) break; /* loop no more than 9 times */
 450                         }
 451                         if ( (trimming) && (which_set == ctdlsetseen_seen) ) {
 452                                 t = atol(vset);
 453                                 if (t<2) t=2;
 454                                 --t;
 455                                 snprintf(lostr, sizeof lostr,
 456                                         "1:%ld,%s", t, vset);
 457                                 safestrncpy(vset, lostr, sizeof vset);
 458                         }
 459                         /* end trim-o-matic code */
 460
 461                         tmp = strlen(vset);
 462                         if (tmp > 0) {
 463                                 strcat(vset, ",");
 464                                 ++tmp;
 465                         }
 466                         if (lo == hi) {
 467                                 snprintf(&vset[tmp], (sizeof vset) - tmp,
 468                                          "%ld", lo);
 469                         }
 470                         else {
 471                                 snprintf(&vset[tmp], (sizeof vset) - tmp,
 472                                          "%ld:%ld", lo, hi);
 473                         }
 474                         lo = (-1L);
 475                         hi = (-1L);
 476                 }
 477                 was_seen = is_seen;
 478         }
 479
 480         /* Decide which message set we're manipulating */
 481         switch (which_set) {
 482                 case ctdlsetseen_seen:
 483                         safestrncpy(vbuf.v_seen, vset, sizeof vbuf.v_seen);
 484                         break;
 485                 case ctdlsetseen_answered:
 486                         safestrncpy(vbuf.v_answered, vset,
 487                                                 sizeof vbuf.v_answered);
 488                         break;
 489         }
 490         free(is_set);
 491
 492         /* CtdlLogPrintf(CTDL_DEBUG, " after optimize: %s\n", vset); */
 493         free(msglist);
 494         CtdlSetRelationship(&vbuf,
 495                 ((which_user != NULL) ? which_user : &CC->user),
 496                 ((which_room != NULL) ? which_room : &CC->room)
 497         );
 498 }
 499
 500
 501 /*
 502  * API function to perform an operation for each qualifying message in the
 503  * current room.  (Returns the number of messages processed.)
 504  */
 505 int CtdlForEachMessage(int mode, long ref, char *search_string,
 506                         char *content_type,
 507                         struct CtdlMessage *compare,
 508                         void (*CallBack) (long, void *),
 509                         void *userdata)
 510 {
 511
 512         int a, i, j;
 513         struct visit vbuf;
 514         struct cdbdata *cdbfr;
 515         long *msglist = NULL;
 516         int num_msgs = 0;
 517         int num_processed = 0;
 518         long thismsg;
 519         struct MetaData smi;
 520         struct CtdlMessage *msg = NULL;
 521         int is_seen = 0;
 522         long lastold = 0L;
 523         int printed_lastold = 0;
 524         int num_search_msgs = 0;
 525         long *search_msgs = NULL;
 526         regex_t re;
 527         int need_to_free_re = 0;
 528         regmatch_t pm;
 529
 530         if (content_type) if (!IsEmptyStr(content_type)) {
 531                 regcomp(&re, content_type, 0);
 532                 need_to_free_re = 1;
 533         }
 534
 535         /* Learn about the user and room in question */
 536         getuser(&CC->user, CC->curr_user);
 537         CtdlGetRelationship(&vbuf, &CC->user, &CC->room);
 538
 539         /* Load the message list */
 540         cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
 541         if (cdbfr != NULL) {
 542                 msglist = (long *) cdbfr->ptr;
 543                 num_msgs = cdbfr->len / sizeof(long);
 544         } else {
 545                 if (need_to_free_re) regfree(&re);
 546                 return 0;       /* No messages at all?  No further action. */
 547         }
 548
 549
 550         /*
 551          * Now begin the traversal.
 552          */
 553         if (num_msgs > 0) for (a = 0; a < num_msgs; ++a) {
 554
 555                 /* If the caller is looking for a specific MIME type, filter
 556                  * out all messages which are not of the type requested.
 557                  */
 558                 if (content_type != NULL) if (!IsEmptyStr(content_type)) {
 559
 560                         /* This call to GetMetaData() sits inside this loop
 561                          * so that we only do the extra database read per msg
 562                          * if we need to.  Doing the extra read all the time
 563                          * really kills the server.  If we ever need to use
 564                          * metadata for another search criterion, we need to
 565                          * move the read somewhere else -- but still be smart
 566                          * enough to only do the read if the caller has
 567                          * specified something that will need it.
 568                          */
 569                         GetMetaData(&smi, msglist[a]);
 570
 571                         /* if (strcasecmp(smi.meta_content_type, content_type)) { old non-regex way */
 572                         if (regexec(&re, smi.meta_content_type, 1, &pm, 0) != 0) {
 573                                 msglist[a] = 0L;
 574                         }
 575                 }
 576         }
 577
 578         num_msgs = sort_msglist(msglist, num_msgs);
 579
 580         /* If a template was supplied, filter out the messages which
 581          * don't match.  (This could induce some delays!)
 582          */
 583         if (num_msgs > 0) {
 584                 if (compare != NULL) {
 585                         for (a = 0; a < num_msgs; ++a) {
 586                                 msg = CtdlFetchMessage(msglist[a], 1);
 587                                 if (msg != NULL) {
 588                                         if (CtdlMsgCmp(msg, compare)) {
 589                                                 msglist[a] = 0L;
 590                                         }
 591                                         CtdlFreeMessage(msg);
 592                                 }
 593                         }
 594                 }
 595         }
 596
 597         /* If a search string was specified, get a message list from
 598          * the full text index and remove messages which aren't on both
 599          * lists.
 600          *
 601          * How this works:
 602          * Since the lists are sorted and strictly ascending, and the
 603          * output list is guaranteed to be shorter than or equal to the
 604          * input list, we overwrite the bottom of the input list.  This
 605          * eliminates the need to memmove big chunks of the list over and
 606          * over again.
 607          */
 608         if ( (num_msgs > 0) && (mode == MSGS_SEARCH) && (search_string) ) {
 609
 610                 /* Call search module via hook mechanism.
 611                  * NULL means use any search function available.
 612                  * otherwise replace with a char * to name of search routine
 613                  */
 614                 CtdlModuleDoSearch(&num_search_msgs, &search_msgs, search_string, "fulltext");
 615
 616                 if (num_search_msgs > 0) {
 617
 618                         int orig_num_msgs;
 619
 620                         orig_num_msgs = num_msgs;
 621                         num_msgs = 0;
 622                         for (i=0; i<orig_num_msgs; ++i) {
 623                                 for (j=0; j<num_search_msgs; ++j) {
 624                                         if (msglist[i] == search_msgs[j]) {
 625                                                 msglist[num_msgs++] = msglist[i];
 626                                         }
 627                                 }
 628                         }
 629                 }
 630                 else {
 631                         num_msgs = 0;   /* No messages qualify */
 632                 }
 633                 if (search_msgs != NULL) free(search_msgs);
 634
 635                 /* Now that we've purged messages which don't contain the search
 636                  * string, treat a MSGS_SEARCH just like a MSGS_ALL from this
 637                  * point on.
 638                  */
 639                 mode = MSGS_ALL;
 640         }
 641
 642         /*
 643          * Now iterate through the message list, according to the
 644          * criteria supplied by the caller.
 645          */
 646         if (num_msgs > 0)
 647                 for (a = 0; a < num_msgs; ++a) {
 648                         thismsg = msglist[a];
 649                         if (mode == MSGS_ALL) {
 650                                 is_seen = 0;
 651                         }
 652                         else {
 653                                 is_seen = is_msg_in_sequence_set(
 654                                                         vbuf.v_seen, thismsg);
 655                                 if (is_seen) lastold = thismsg;
 656                         }
 657                         if ((thismsg > 0L)
 658                             && (
 659
 660                                        (mode == MSGS_ALL)
 661                                        || ((mode == MSGS_OLD) && (is_seen))
 662                                        || ((mode == MSGS_NEW) && (!is_seen))
 663                                        || ((mode == MSGS_LAST) && (a >= (num_msgs - ref)))
 664                                    || ((mode == MSGS_FIRST) && (a < ref))
 665                                 || ((mode == MSGS_GT) && (thismsg > ref))
 666                                 || ((mode == MSGS_EQ) && (thismsg == ref))
 667                             )
 668                             ) {
 669                                 if ((mode == MSGS_NEW) && (CC->user.flags & US_LASTOLD) && (lastold > 0L) && (printed_lastold == 0) && (!is_seen)) {
 670                                         if (CallBack)
 671                                                 CallBack(lastold, userdata);
 672                                         printed_lastold = 1;
 673                                         ++num_processed;
 674                                 }
 675                                 if (CallBack) CallBack(thismsg, userdata);
 676                                 ++num_processed;
 677                         }
 678                 }
 679         cdb_free(cdbfr);        /* Clean up */
 680         if (need_to_free_re) regfree(&re);
 681         return num_processed;
 682 }
 683
 684
 685
 686 /*
 687  * cmd_msgs()  -  get list of message #'s in this room
 688  *              implements the MSGS server command using CtdlForEachMessage()
 689  */
 690 void cmd_msgs(char *cmdbuf)
 691 {
 692         int mode = 0;
 693         char which[16];
 694         char buf[256];
 695         char tfield[256];
 696         char tvalue[256];
 697         int cm_ref = 0;
 698         int i;
 699         int with_template = 0;
 700         struct CtdlMessage *template = NULL;
 701         int with_headers = 0;
 702         char search_string[1024];
 703
 704         extract_token(which, cmdbuf, 0, '|', sizeof which);
 705         cm_ref = extract_int(cmdbuf, 1);
 706         extract_token(search_string, cmdbuf, 1, '|', sizeof search_string);
 707         with_template = extract_int(cmdbuf, 2);
 708         with_headers = extract_int(cmdbuf, 3);
 709
 710         strcat(which, "   ");
 711         if (!strncasecmp(which, "OLD", 3))
 712                 mode = MSGS_OLD;
 713         else if (!strncasecmp(which, "NEW", 3))
 714                 mode = MSGS_NEW;
 715         else if (!strncasecmp(which, "FIRST", 5))
 716                 mode = MSGS_FIRST;
 717         else if (!strncasecmp(which, "LAST", 4))
 718                 mode = MSGS_LAST;
 719         else if (!strncasecmp(which, "GT", 2))
 720                 mode = MSGS_GT;
 721         else if (!strncasecmp(which, "SEARCH", 6))
 722                 mode = MSGS_SEARCH;
 723         else
 724                 mode = MSGS_ALL;
 725
 726         if ((!(CC->logged_in)) && (!(CC->internal_pgm))) {
 727                 cprintf("%d not logged in\n", ERROR + NOT_LOGGED_IN);
 728                 return;
 729         }
 730
 731         if ( (mode == MSGS_SEARCH) && (!config.c_enable_fulltext) ) {
 732                 cprintf("%d Full text index is not enabled on this server.\n",
 733                         ERROR + CMD_NOT_SUPPORTED);
 734                 return;
 735         }
 736
 737         if (with_template) {
 738                 unbuffer_output();
 739                 cprintf("%d Send template then receive message list\n",
 740                         START_CHAT_MODE);
 741                 template = (struct CtdlMessage *)
 742                         malloc(sizeof(struct CtdlMessage));
 743                 memset(template, 0, sizeof(struct CtdlMessage));
 744                 template->cm_magic = CTDLMESSAGE_MAGIC;
 745                 template->cm_anon_type = MES_NORMAL;
 746
 747                 while(client_getln(buf, sizeof buf), strcmp(buf,"000")) {
 748                         extract_token(tfield, buf, 0, '|', sizeof tfield);
 749                         extract_token(tvalue, buf, 1, '|', sizeof tvalue);
 750                         for (i='A'; i<='Z'; ++i) if (msgkeys[i]!=NULL) {
 751                                 if (!strcasecmp(tfield, msgkeys[i])) {
 752                                         template->cm_fields[i] =
 753                                                 strdup(tvalue);
 754                                 }
 755                         }
 756                 }
 757                 buffer_output();
 758         }
 759         else {
 760                 cprintf("%d  \n", LISTING_FOLLOWS);
 761         }
 762
 763         CtdlForEachMessage(mode,
 764                         ( (mode == MSGS_SEARCH) ? 0 : cm_ref ),
 765                         ( (mode == MSGS_SEARCH) ? search_string : NULL ),
 766                         NULL,
 767                         template,
 768                         (with_headers ? headers_listing : simple_listing),
 769                         NULL
 770         );
 771         if (template != NULL) CtdlFreeMessage(template);
 772         cprintf("000\n");
 773 }
 774
 775
 776
 777
 778 /*
 779  * help_subst()  -  support routine for help file viewer
 780  */
 781 void help_subst(char *strbuf, char *source, char *dest)
 782 {
 783         char workbuf[SIZ];
 784         int p;
 785
 786         while (p = pattern2(strbuf, source), (p >= 0)) {
 787                 strcpy(workbuf, &strbuf[p + strlen(source)]);
 788                 strcpy(&strbuf[p], dest);
 789                 strcat(strbuf, workbuf);
 790         }
 791 }
 792
 793
 794 void do_help_subst(char *buffer)
 795 {
 796         char buf2[16];
 797
 798         help_subst(buffer, "^nodename", config.c_nodename);
 799         help_subst(buffer, "^humannode", config.c_humannode);
 800         help_subst(buffer, "^fqdn", config.c_fqdn);
 801         help_subst(buffer, "^username", CC->user.fullname);
 802         snprintf(buf2, sizeof buf2, "%ld", CC->user.usernum);
 803         help_subst(buffer, "^usernum", buf2);
 804         help_subst(buffer, "^sysadm", config.c_sysadm);
 805         help_subst(buffer, "^variantname", CITADEL);
 806         snprintf(buf2, sizeof buf2, "%d", config.c_maxsessions);
 807         help_subst(buffer, "^maxsessions", buf2);
 808         help_subst(buffer, "^bbsdir", ctdl_message_dir);
 809 }
 810
 811
 812
 813 /*
 814  * memfmout()  -  Citadel text formatter and paginator.
 815  *           Although the original purpose of this routine was to format
 816  *           text to the reader's screen width, all we're really using it
 817  *           for here is to format text out to 80 columns before sending it
 818  *           to the client.  The client software may reformat it again.
 819  */
 820 void memfmout(
 821         char *mptr,             /* where are we going to get our text from? */
 822         char subst,             /* nonzero if we should do substitutions */
 823         char *nl)               /* string to terminate lines with */
 824 {
 825         int a, b, c;
 826         int real = 0;
 827         int old = 0;
 828         cit_uint8_t ch;
 829         char aaa[140];
 830         char buffer[SIZ];
 831         static int width = 80;
 832
 833         strcpy(aaa, "");
 834         old = 255;
 835         strcpy(buffer, "");
 836         c = 1;                  /* c is the current pos */
 837
 838         do {
 839                 if (subst) {
 840                         while (ch = *mptr, ((ch != 0) && (strlen(buffer) < 126))) {
 841                                 ch = *mptr++;
 842                                 buffer[strlen(buffer) + 1] = 0;
 843                                 buffer[strlen(buffer)] = ch;
 844                         }
 845
 846                         if (buffer[0] == '^')
 847                                 do_help_subst(buffer);
 848
 849                         buffer[strlen(buffer) + 1] = 0;
 850                         a = buffer[0];
 851                         strcpy(buffer, &buffer[1]);
 852                 } else {
 853                         ch = *mptr++;
 854                 }
 855
 856                 old = real;
 857                 real = ch;
 858
 859                 if (((ch == 13) || (ch == 10)) && (old != 13) && (old != 10)) {
 860                         ch = 32;
 861                 }
 862                 if (((old == 13) || (old == 10)) && (isspace(real))) {
 863                         cprintf("%s", nl);
 864                         c = 1;
 865                 }
 866                 if (ch > 32) {
 867                         if (((strlen(aaa) + c) > (width - 5)) && (strlen(aaa) > (width - 5))) {
 868                                 cprintf("%s%s", nl, aaa);
 869                                 c = strlen(aaa);
 870                                 aaa[0] = 0;
 871                         }
 872                         b = strlen(aaa);
 873                         aaa[b] = ch;
 874                         aaa[b + 1] = 0;
 875                 }
 876                 if (ch == 32) {
 877                         if ((strlen(aaa) + c) > (width - 5)) {
 878                                 cprintf("%s", nl);
 879                                 c = 1;
 880                         }
 881                         cprintf("%s ", aaa);
 882                         ++c;
 883                         c = c + strlen(aaa);
 884                         strcpy(aaa, "");
 885                 }
 886                 if ((ch == 13) || (ch == 10)) {
 887                         cprintf("%s%s", aaa, nl);
 888                         c = 1;
 889                         strcpy(aaa, "");
 890                 }
 891
 892         } while (ch > 0);
 893
 894         cprintf("%s%s", aaa, nl);
 895 }
 896
 897
 898
 899 /*
 900  * Callback function for mime parser that simply lists the part
 901  */
 902 void list_this_part(char *name, char *filename, char *partnum, char *disp,
 903                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
 904                     void *cbuserdata)
 905 {
 906         struct ma_info *ma;
 907
 908         ma = (struct ma_info *)cbuserdata;
 909         if (ma->is_ma == 0) {
 910                 cprintf("part=%s|%s|%s|%s|%s|%ld\n",
 911                         name, filename, partnum, disp, cbtype, (long)length);
 912         }
 913 }
 914
 915 /*
 916  * Callback function for multipart prefix
 917  */
 918 void list_this_pref(char *name, char *filename, char *partnum, char *disp,
 919                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
 920                     void *cbuserdata)
 921 {
 922         struct ma_info *ma;
 923
 924         ma = (struct ma_info *)cbuserdata;
 925         if (!strcasecmp(cbtype, "multipart/alternative")) {
 926                 ++ma->is_ma;
 927         }
 928
 929         if (ma->is_ma == 0) {
 930                 cprintf("pref=%s|%s\n", partnum, cbtype);
 931         }
 932 }
 933
 934 /*
 935  * Callback function for multipart sufffix
 936  */
 937 void list_this_suff(char *name, char *filename, char *partnum, char *disp,
 938                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
 939                     void *cbuserdata)
 940 {
 941         struct ma_info *ma;
 942
 943         ma = (struct ma_info *)cbuserdata;
 944         if (ma->is_ma == 0) {
 945                 cprintf("suff=%s|%s\n", partnum, cbtype);
 946         }
 947         if (!strcasecmp(cbtype, "multipart/alternative")) {
 948                 --ma->is_ma;
 949         }
 950 }
 951
 952
 953 /*
 954  * Callback function for mime parser that opens a section for downloading
 955  */
 956 void mime_download(char *name, char *filename, char *partnum, char *disp,
 957                    void *content, char *cbtype, char *cbcharset, size_t length,
 958                    char *encoding, void *cbuserdata)
 959 {
 960
 961         /* Silently go away if there's already a download open... */
 962         if (CC->download_fp != NULL)
 963                 return;
 964
 965         /* ...or if this is not the desired section */
 966         if (strcasecmp(CC->download_desired_section, partnum))
 967                 return;
 968
 969         CC->download_fp = tmpfile();
 970         if (CC->download_fp == NULL)
 971                 return;
 972
 973         fwrite(content, length, 1, CC->download_fp);
 974         fflush(CC->download_fp);
 975         rewind(CC->download_fp);
 976
 977         OpenCmdResult(filename, cbtype);
 978 }
 979
 980
 981
 982 /*
 983  * Callback function for mime parser that outputs a section all at once
 984  */
 985 void mime_spew_section(char *name, char *filename, char *partnum, char *disp,
 986                    void *content, char *cbtype, char *cbcharset, size_t length,
 987                    char *encoding, void *cbuserdata)
 988 {
 989         int *found_it = (int *)cbuserdata;
 990
 991         /* ...or if this is not the desired section */
 992         if (strcasecmp(CC->download_desired_section, partnum))
 993                 return;
 994
 995         *found_it = 1;
 996
 997         cprintf("%d %d\n", BINARY_FOLLOWS, (int)length);
 998         client_write(content, length);
 999 }
1000
1001
1002
1003 /*
1004  * Load a message from disk into memory.
1005  * This is used by CtdlOutputMsg() and other fetch functions.
1006  *
1007  * NOTE: Caller is responsible for freeing the returned CtdlMessage struct
1008  *       using the CtdlMessageFree() function.
1009  */
1010 struct CtdlMessage *CtdlFetchMessage(long msgnum, int with_body)
1011 {
1012         struct cdbdata *dmsgtext;
1013         struct CtdlMessage *ret = NULL;
1014         char *mptr;
1015         char *upper_bound;
1016         cit_uint8_t ch;
1017         cit_uint8_t field_header;
1018
1019         CtdlLogPrintf(CTDL_DEBUG, "CtdlFetchMessage(%ld, %d)\n", msgnum, with_body);
1020
1021         dmsgtext = cdb_fetch(CDB_MSGMAIN, &msgnum, sizeof(long));
1022         if (dmsgtext == NULL) {
1023                 return NULL;
1024         }
1025         mptr = dmsgtext->ptr;
1026         upper_bound = mptr + dmsgtext->len;
1027
1028         /* Parse the three bytes that begin EVERY message on disk.
1029          * The first is always 0xFF, the on-disk magic number.
1030          * The second is the anonymous/public type byte.
1031          * The third is the format type byte (vari, fixed, or MIME).
1032          */
1033         ch = *mptr++;
1034         if (ch != 255) {
1035                 CtdlLogPrintf(CTDL_ERR, "Message %ld appears to be corrupted.\n", msgnum);
1036                 cdb_free(dmsgtext);
1037                 return NULL;
1038         }
1039         ret = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
1040         memset(ret, 0, sizeof(struct CtdlMessage));
1041
1042         ret->cm_magic = CTDLMESSAGE_MAGIC;
1043         ret->cm_anon_type = *mptr++;    /* Anon type byte */
1044         ret->cm_format_type = *mptr++;  /* Format type byte */
1045
1046         /*
1047          * The rest is zero or more arbitrary fields.  Load them in.
1048          * We're done when we encounter either a zero-length field or
1049          * have just processed the 'M' (message text) field.
1050          */
1051         do {
1052                 if (mptr >= upper_bound) {
1053                         break;
1054                 }
1055                 field_header = *mptr++;
1056                 ret->cm_fields[field_header] = strdup(mptr);
1057
1058                 while (*mptr++ != 0);   /* advance to next field */
1059
1060         } while ((mptr < upper_bound) && (field_header != 'M'));
1061
1062         cdb_free(dmsgtext);
1063
1064         /* Always make sure there's something in the msg text field.  If
1065          * it's NULL, the message text is most likely stored separately,
1066          * so go ahead and fetch that.  Failing that, just set a dummy
1067          * body so other code doesn't barf.
1068          */
1069         if ( (ret->cm_fields['M'] == NULL) && (with_body) ) {
1070                 dmsgtext = cdb_fetch(CDB_BIGMSGS, &msgnum, sizeof(long));
1071                 if (dmsgtext != NULL) {
1072                         ret->cm_fields['M'] = strdup(dmsgtext->ptr);
1073                         cdb_free(dmsgtext);
1074                 }
1075         }
1076         if (ret->cm_fields['M'] == NULL) {
1077                 ret->cm_fields['M'] = strdup("\r\n\r\n (no text)\r\n");
1078         }
1079
1080         /* Perform "before read" hooks (aborting if any return nonzero) */
1081         if (PerformMessageHooks(ret, EVT_BEFOREREAD) > 0) {
1082                 CtdlFreeMessage(ret);
1083                 return NULL;
1084         }
1085
1086         return (ret);
1087 }
1088
1089
1090 /*
1091  * Returns 1 if the supplied pointer points to a valid Citadel message.
1092  * If the pointer is NULL or the magic number check fails, returns 0.
1093  */
1094 int is_valid_message(struct CtdlMessage *msg) {
1095         if (msg == NULL)
1096                 return 0;
1097         if ((msg->cm_magic) != CTDLMESSAGE_MAGIC) {
1098                 CtdlLogPrintf(CTDL_WARNING, "is_valid_message() -- self-check failed\n");
1099                 return 0;
1100         }
1101         return 1;
1102 }
1103
1104
1105 /*
1106  * 'Destructor' for struct CtdlMessage
1107  */
1108 void CtdlFreeMessage(struct CtdlMessage *msg)
1109 {
1110         int i;
1111
1112         if (is_valid_message(msg) == 0)
1113         {
1114                 if (msg != NULL) free (msg);
1115                 return;
1116         }
1117
1118         for (i = 0; i < 256; ++i)
1119                 if (msg->cm_fields[i] != NULL) {
1120                         free(msg->cm_fields[i]);
1121                 }
1122
1123         msg->cm_magic = 0;      /* just in case */
1124         free(msg);
1125 }
1126
1127
1128 /*
1129  * Pre callback function for multipart/alternative
1130  *
1131  * NOTE: this differs from the standard behavior for a reason.  Normally when
1132  *       displaying multipart/alternative you want to show the _last_ usable
1133  *       format in the message.  Here we show the _first_ one, because it's
1134  *       usually text/plain.  Since this set of functions is designed for text
1135  *       output to non-MIME-aware clients, this is the desired behavior.
1136  *
1137  */
1138 void fixed_output_pre(char *name, char *filename, char *partnum, char *disp,
1139                 void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1140                 void *cbuserdata)
1141 {
1142         struct ma_info *ma;
1143
1144         ma = (struct ma_info *)cbuserdata;
1145         CtdlLogPrintf(CTDL_DEBUG, "fixed_output_pre() type=<%s>\n", cbtype);
1146         if (!strcasecmp(cbtype, "multipart/alternative")) {
1147                 ++ma->is_ma;
1148                 ma->did_print = 0;
1149         }
1150         if (!strcasecmp(cbtype, "message/rfc822")) {
1151                 ++ma->freeze;
1152         }
1153 }
1154
1155 /*
1156  * Post callback function for multipart/alternative
1157  */
1158 void fixed_output_post(char *name, char *filename, char *partnum, char *disp,
1159                 void *content, char *cbtype, char *cbcharset, size_t length,
1160                 char *encoding, void *cbuserdata)
1161 {
1162         struct ma_info *ma;
1163
1164         ma = (struct ma_info *)cbuserdata;
1165         CtdlLogPrintf(CTDL_DEBUG, "fixed_output_post() type=<%s>\n", cbtype);
1166         if (!strcasecmp(cbtype, "multipart/alternative")) {
1167                 --ma->is_ma;
1168                 ma->did_print = 0;
1169         }
1170         if (!strcasecmp(cbtype, "message/rfc822")) {
1171                 --ma->freeze;
1172         }
1173 }
1174
1175 /*
1176  * Inline callback function for mime parser that wants to display text
1177  */
1178 void fixed_output(char *name, char *filename, char *partnum, char *disp,
1179                 void *content, char *cbtype, char *cbcharset, size_t length,
1180                 char *encoding, void *cbuserdata)
1181 {
1182         char *ptr;
1183         char *wptr;
1184         size_t wlen;
1185         struct ma_info *ma;
1186
1187         ma = (struct ma_info *)cbuserdata;
1188
1189         CtdlLogPrintf(CTDL_DEBUG,
1190                 "fixed_output() part %s: %s (%s) (%ld bytes)\n",
1191                 partnum, filename, cbtype, (long)length);
1192
1193         /*
1194          * If we're in the middle of a multipart/alternative scope and
1195          * we've already printed another section, skip this one.
1196          */
1197         if ( (ma->is_ma) && (ma->did_print) ) {
1198                 CtdlLogPrintf(CTDL_DEBUG, "Skipping part %s (%s)\n", partnum, cbtype);
1199                 return;
1200         }
1201         ma->did_print = 1;
1202
1203         if ( (!strcasecmp(cbtype, "text/plain"))
1204            || (IsEmptyStr(cbtype)) ) {
1205                 wptr = content;
1206                 if (length > 0) {
1207                         client_write(wptr, length);
1208                         if (wptr[length-1] != '\n') {
1209                                 cprintf("\n");
1210                         }
1211                 }
1212                 return;
1213         }
1214
1215         if (!strcasecmp(cbtype, "text/html")) {
1216                 ptr = html_to_ascii(content, length, 80, 0);
1217                 wlen = strlen(ptr);
1218                 client_write(ptr, wlen);
1219                 if (ptr[wlen-1] != '\n') {
1220                         cprintf("\n");
1221                 }
1222                 free(ptr);
1223                 return;
1224         }
1225
1226         if (ma->use_fo_hooks) {
1227                 if (PerformFixedOutputHooks(cbtype, content, length)) {
1228                 /* above function returns nonzero if it handled the part */
1229                         return;
1230                 }
1231         }
1232
1233         if (strncasecmp(cbtype, "multipart/", 10)) {
1234                 cprintf("Part %s: %s (%s) (%ld bytes)\r\n",
1235                         partnum, filename, cbtype, (long)length);
1236                 return;
1237         }
1238 }
1239
1240 /*
1241  * The client is elegant and sophisticated and wants to be choosy about
1242  * MIME content types, so figure out which multipart/alternative part
1243  * we're going to send.
1244  *
1245  * We use a system of weights.  When we find a part that matches one of the
1246  * MIME types we've declared as preferential, we can store it in ma->chosen_part
1247  * and then set ma->chosen_pref to that MIME type's position in our preference
1248  * list.  If we then hit another match, we only replace the first match if
1249  * the preference value is lower.
1250  */
1251 void choose_preferred(char *name, char *filename, char *partnum, char *disp,
1252                 void *content, char *cbtype, char *cbcharset, size_t length,
1253                 char *encoding, void *cbuserdata)
1254 {
1255         char buf[1024];
1256         int i;
1257         struct ma_info *ma;
1258
1259         ma = (struct ma_info *)cbuserdata;
1260
1261         // NOTE: REMOVING THIS CONDITIONAL FIXES BUG 220
1262         //       http://bugzilla.citadel.org/show_bug.cgi?id=220
1263         // I don't know if there are any side effects!  Please TEST TEST TEST
1264         //if (ma->is_ma > 0) {
1265
1266         for (i=0; i<num_tokens(CC->preferred_formats, '|'); ++i) {
1267                 extract_token(buf, CC->preferred_formats, i, '|', sizeof buf);
1268                 if ( (!strcasecmp(buf, cbtype)) && (!ma->freeze) ) {
1269                         if (i < ma->chosen_pref) {
1270                                 CtdlLogPrintf(CTDL_DEBUG, "Setting chosen part: <%s>\n", partnum);
1271                                 safestrncpy(ma->chosen_part, partnum, sizeof ma->chosen_part);
1272                                 ma->chosen_pref = i;
1273                         }
1274                 }
1275         }
1276 }
1277
1278 /*
1279  * Now that we've chosen our preferred part, output it.
1280  */
1281 void output_preferred(char *name, char *filename, char *partnum, char *disp,
1282                 void *content, char *cbtype, char *cbcharset, size_t length,
1283                 char *encoding, void *cbuserdata)
1284 {
1285         int i;
1286         char buf[128];
1287         int add_newline = 0;
1288         char *text_content;
1289         struct ma_info *ma;
1290
1291         ma = (struct ma_info *)cbuserdata;
1292
1293         /* This is not the MIME part you're looking for... */
1294         if (strcasecmp(partnum, ma->chosen_part)) return;
1295
1296         /* If the content-type of this part is in our preferred formats
1297          * list, we can simply output it verbatim.
1298          */
1299         for (i=0; i<num_tokens(CC->preferred_formats, '|'); ++i) {
1300                 extract_token(buf, CC->preferred_formats, i, '|', sizeof buf);
1301                 if (!strcasecmp(buf, cbtype)) {
1302                         /* Yeah!  Go!  W00t!! */
1303
1304                         text_content = (char *)content;
1305                         if (text_content[length-1] != '\n') {
1306                                 ++add_newline;
1307                         }
1308                         cprintf("Content-type: %s", cbtype);
1309                         if (!IsEmptyStr(cbcharset)) {
1310                                 cprintf("; charset=%s", cbcharset);
1311                         }
1312                         cprintf("\nContent-length: %d\n",
1313                                 (int)(length + add_newline) );
1314                         if (!IsEmptyStr(encoding)) {
1315                                 cprintf("Content-transfer-encoding: %s\n", encoding);
1316                         }
1317                         else {
1318                                 cprintf("Content-transfer-encoding: 7bit\n");
1319                         }
1320                         cprintf("X-Citadel-MSG4-Partnum: %s\n", partnum);
1321                         cprintf("\n");
1322                         client_write(content, length);
1323                         if (add_newline) cprintf("\n");
1324                         return;
1325                 }
1326         }
1327
1328         /* No translations required or possible: output as text/plain */
1329         cprintf("Content-type: text/plain\n\n");
1330         fixed_output(name, filename, partnum, disp, content, cbtype, cbcharset,
1331                         length, encoding, cbuserdata);
1332 }
1333
1334
1335 struct encapmsg {
1336         char desired_section[64];
1337         char *msg;
1338         size_t msglen;
1339 };
1340
1341
1342 /*
1343  * Callback function for
1344  */
1345 void extract_encapsulated_message(char *name, char *filename, char *partnum, char *disp,
1346                    void *content, char *cbtype, char *cbcharset, size_t length,
1347                    char *encoding, void *cbuserdata)
1348 {
1349         struct encapmsg *encap;
1350
1351         encap = (struct encapmsg *)cbuserdata;
1352
1353         /* Only proceed if this is the desired section... */
1354         if (!strcasecmp(encap->desired_section, partnum)) {
1355                 encap->msglen = length;
1356                 encap->msg = malloc(length + 2);
1357                 memcpy(encap->msg, content, length);
1358                 return;
1359         }
1360
1361 }
1362
1363
1364
1365
1366 /*
1367  * Get a message off disk.  (returns om_* values found in msgbase.h)
1368  *
1369  */
1370 int CtdlOutputMsg(long msg_num,         /* message number (local) to fetch */
1371                 int mode,               /* how would you like that message? */
1372                 int headers_only,       /* eschew the message body? */
1373                 int do_proto,           /* do Citadel protocol responses? */
1374                 int crlf,               /* Use CRLF newlines instead of LF? */
1375                 char *section           /* NULL or a message/rfc822 section */
1376 ) {
1377         struct CtdlMessage *TheMessage = NULL;
1378         int retcode = om_no_such_msg;
1379         struct encapmsg encap;
1380
1381         CtdlLogPrintf(CTDL_DEBUG, "CtdlOutputMsg() msgnum=%ld, mode=%d, section=%s\n",
1382                 msg_num, mode,
1383                 (section ? section : "<>")
1384         );
1385
1386         if ((!(CC->logged_in)) && (!(CC->internal_pgm))) {
1387                 if (do_proto) cprintf("%d Not logged in.\n",
1388                         ERROR + NOT_LOGGED_IN);
1389                 return(om_not_logged_in);
1390         }
1391
1392         /* FIXME: check message id against msglist for this room */
1393
1394         /*
1395          * Fetch the message from disk.  If we're in any sort of headers
1396          * only mode, request that we don't even bother loading the body
1397          * into memory.
1398          */
1399         if ( (headers_only == HEADERS_FAST) || (headers_only == HEADERS_ONLY) ) {
1400                 TheMessage = CtdlFetchMessage(msg_num, 0);
1401         }
1402         else {
1403                 TheMessage = CtdlFetchMessage(msg_num, 1);
1404         }
1405
1406         if (TheMessage == NULL) {
1407                 if (do_proto) cprintf("%d Can't locate msg %ld on disk\n",
1408                         ERROR + MESSAGE_NOT_FOUND, msg_num);
1409                 return(om_no_such_msg);
1410         }
1411
1412         /* Here is the weird form of this command, to process only an
1413          * encapsulated message/rfc822 section.
1414          */
1415         if (section) if (!IsEmptyStr(section)) if (strcmp(section, "0")) {
1416                 memset(&encap, 0, sizeof encap);
1417                 safestrncpy(encap.desired_section, section, sizeof encap.desired_section);
1418                 mime_parser(TheMessage->cm_fields['M'],
1419                         NULL,
1420                         *extract_encapsulated_message,
1421                         NULL, NULL, (void *)&encap, 0
1422                 );
1423                 CtdlFreeMessage(TheMessage);
1424                 TheMessage = NULL;
1425
1426                 if (encap.msg) {
1427                         encap.msg[encap.msglen] = 0;
1428                         TheMessage = convert_internet_message(encap.msg);
1429                         encap.msg = NULL;       /* no free() here, TheMessage owns it now */
1430
1431                         /* Now we let it fall through to the bottom of this
1432                          * function, because TheMessage now contains the
1433                          * encapsulated message instead of the top-level
1434                          * message.  Isn't that neat?
1435                          */
1436
1437                 }
1438                 else {
1439                         if (do_proto) cprintf("%d msg %ld has no part %s\n",
1440                                 ERROR + MESSAGE_NOT_FOUND, msg_num, section);
1441                         retcode = om_no_such_msg;
1442                 }
1443
1444         }
1445
1446         /* Ok, output the message now */
1447         retcode = CtdlOutputPreLoadedMsg(TheMessage, mode, headers_only, do_proto, crlf);
1448         CtdlFreeMessage(TheMessage);
1449
1450         return(retcode);
1451 }
1452
1453
1454 /*
1455  * Get a message off disk.  (returns om_* values found in msgbase.h)
1456  */
1457 int CtdlOutputPreLoadedMsg(
1458                 struct CtdlMessage *TheMessage,
1459                 int mode,               /* how would you like that message? */
1460                 int headers_only,       /* eschew the message body? */
1461                 int do_proto,           /* do Citadel protocol responses? */
1462                 int crlf                /* Use CRLF newlines instead of LF? */
1463 ) {
1464         int i, k;
1465         char buf[SIZ];
1466         cit_uint8_t ch;
1467         char allkeys[30];
1468         char display_name[256];
1469         char *mptr;
1470         char *nl;       /* newline string */
1471         int suppress_f = 0;
1472         int subject_found = 0;
1473         struct ma_info ma;
1474
1475         /* Buffers needed for RFC822 translation.  These are all filled
1476          * using functions that are bounds-checked, and therefore we can
1477          * make them substantially smaller than SIZ.
1478          */
1479         char suser[100];
1480         char luser[100];
1481         char fuser[100];
1482         char snode[100];
1483         char lnode[100];
1484         char mid[100];
1485         char datestamp[100];
1486
1487         CtdlLogPrintf(CTDL_DEBUG, "CtdlOutputPreLoadedMsg(TheMessage=%s, %d, %d, %d, %d\n",
1488                 ((TheMessage == NULL) ? "NULL" : "not null"),
1489                 mode, headers_only, do_proto, crlf);
1490
1491         strcpy(mid, "unknown");
1492         nl = (crlf ? "\r\n" : "\n");
1493
1494         if (!is_valid_message(TheMessage)) {
1495                 CtdlLogPrintf(CTDL_ERR,
1496                         "ERROR: invalid preloaded message for output\n");
1497                 return(om_no_such_msg);
1498         }
1499
1500         /* Are we downloading a MIME component? */
1501         if (mode == MT_DOWNLOAD) {
1502                 if (TheMessage->cm_format_type != FMT_RFC822) {
1503                         if (do_proto)
1504                                 cprintf("%d This is not a MIME message.\n",
1505                                 ERROR + ILLEGAL_VALUE);
1506                 } else if (CC->download_fp != NULL) {
1507                         if (do_proto) cprintf(
1508                                 "%d You already have a download open.\n",
1509                                 ERROR + RESOURCE_BUSY);
1510                 } else {
1511                         /* Parse the message text component */
1512                         mptr = TheMessage->cm_fields['M'];
1513                         mime_parser(mptr, NULL, *mime_download, NULL, NULL, NULL, 0);
1514                         /* If there's no file open by this time, the requested
1515                          * section wasn't found, so print an error
1516                          */
1517                         if (CC->download_fp == NULL) {
1518                                 if (do_proto) cprintf(
1519                                         "%d Section %s not found.\n",
1520                                         ERROR + FILE_NOT_FOUND,
1521                                         CC->download_desired_section);
1522                         }
1523                 }
1524                 return((CC->download_fp != NULL) ? om_ok : om_mime_error);
1525         }
1526
1527         /* MT_SPEW_SECTION is like MT_DOWNLOAD except it outputs the whole MIME part
1528          * in a single server operation instead of opening a download file.
1529          */
1530         if (mode == MT_SPEW_SECTION) {
1531                 if (TheMessage->cm_format_type != FMT_RFC822) {
1532                         if (do_proto)
1533                                 cprintf("%d This is not a MIME message.\n",
1534                                 ERROR + ILLEGAL_VALUE);
1535                 } else {
1536                         /* Parse the message text component */
1537                         int found_it = 0;
1538
1539                         mptr = TheMessage->cm_fields['M'];
1540                         mime_parser(mptr, NULL, *mime_spew_section, NULL, NULL, (void *)&found_it, 0);
1541                         /* If section wasn't found, print an error
1542                          */
1543                         if (!found_it) {
1544                                 if (do_proto) cprintf(
1545                                         "%d Section %s not found.\n",
1546                                         ERROR + FILE_NOT_FOUND,
1547                                         CC->download_desired_section);
1548                         }
1549                 }
1550                 return((CC->download_fp != NULL) ? om_ok : om_mime_error);
1551         }
1552
1553         /* now for the user-mode message reading loops */
1554         if (do_proto) cprintf("%d msg:\n", LISTING_FOLLOWS);
1555
1556         /* Does the caller want to skip the headers? */
1557         if (headers_only == HEADERS_NONE) goto START_TEXT;
1558
1559         /* Tell the client which format type we're using. */
1560         if ( (mode == MT_CITADEL) && (do_proto) ) {
1561                 cprintf("type=%d\n", TheMessage->cm_format_type);
1562         }
1563
1564         /* nhdr=yes means that we're only displaying headers, no body */
1565         if ( (TheMessage->cm_anon_type == MES_ANONONLY)
1566            && (mode == MT_CITADEL)
1567            && (do_proto)
1568            ) {
1569                 cprintf("nhdr=yes\n");
1570         }
1571
1572         /* begin header processing loop for Citadel message format */
1573
1574         if ((mode == MT_CITADEL) || (mode == MT_MIME)) {
1575
1576                 safestrncpy(display_name, "<unknown>", sizeof display_name);
1577                 if (TheMessage->cm_fields['A']) {
1578                         strcpy(buf, TheMessage->cm_fields['A']);
1579                         if (TheMessage->cm_anon_type == MES_ANONONLY) {
1580                                 safestrncpy(display_name, "****", sizeof display_name);
1581                         }
1582                         else if (TheMessage->cm_anon_type == MES_ANONOPT) {
1583                                 safestrncpy(display_name, "anonymous", sizeof display_name);
1584                         }
1585                         else {
1586                                 safestrncpy(display_name, buf, sizeof display_name);
1587                         }
1588                         if ((is_room_aide())
1589                             && ((TheMessage->cm_anon_type == MES_ANONONLY)
1590                              || (TheMessage->cm_anon_type == MES_ANONOPT))) {
1591                                 size_t tmp = strlen(display_name);
1592                                 snprintf(&display_name[tmp],
1593                                          sizeof display_name - tmp,
1594                                          " [%s]", buf);
1595                         }
1596                 }
1597
1598                 /* Don't show Internet address for users on the
1599                  * local Citadel network.
1600                  */
1601                 suppress_f = 0;
1602                 if (TheMessage->cm_fields['N'] != NULL)
1603                    if (!IsEmptyStr(TheMessage->cm_fields['N']))
1604                       if (haschar(TheMessage->cm_fields['N'], '.') == 0) {
1605                         suppress_f = 1;
1606                 }
1607
1608                 /* Now spew the header fields in the order we like them. */
1609                 safestrncpy(allkeys, FORDER, sizeof allkeys);
1610                 for (i=0; i<strlen(allkeys); ++i) {
1611                         k = (int) allkeys[i];
1612                         if (k != 'M') {
1613                                 if ( (TheMessage->cm_fields[k] != NULL)
1614                                    && (msgkeys[k] != NULL) ) {
1615                                         if (k == 'A') {
1616                                                 if (do_proto) cprintf("%s=%s\n",
1617                                                         msgkeys[k],
1618                                                         display_name);
1619                                         }
1620                                         else if ((k == 'F') && (suppress_f)) {
1621                                                 /* do nothing */
1622                                         }
1623                                         /* Masquerade display name if needed */
1624                                         else {
1625                                                 if (do_proto) cprintf("%s=%s\n",
1626                                                         msgkeys[k],
1627                                                         TheMessage->cm_fields[k]
1628                                         );
1629                                         }
1630                                 }
1631                         }
1632                 }
1633
1634         }
1635
1636         /* begin header processing loop for RFC822 transfer format */
1637
1638         strcpy(suser, "");
1639         strcpy(luser, "");
1640         strcpy(fuser, "");
1641         strcpy(snode, NODENAME);
1642         strcpy(lnode, HUMANNODE);
1643         if (mode == MT_RFC822) {
1644                 for (i = 0; i < 256; ++i) {
1645                         if (TheMessage->cm_fields[i]) {
1646                                 mptr = TheMessage->cm_fields[i];
1647
1648                                 if (i == 'A') {
1649                                         safestrncpy(luser, mptr, sizeof luser);
1650                                         safestrncpy(suser, mptr, sizeof suser);
1651                                 }
1652                                 else if (i == 'Y') {
1653                                         cprintf("CC: %s%s", mptr, nl);
1654                                 }
1655                                 else if (i == 'P') {
1656                                         cprintf("Return-Path: %s%s", mptr, nl);
1657                                 }
1658                                 else if (i == 'V') {
1659                                         cprintf("Envelope-To: %s%s", mptr, nl);
1660                                 }
1661                                 else if (i == 'U') {
1662                                         cprintf("Subject: %s%s", mptr, nl);
1663                                         subject_found = 1;
1664                                 }
1665                                 else if (i == 'I')
1666                                         safestrncpy(mid, mptr, sizeof mid);
1667                                 else if (i == 'H')
1668                                         safestrncpy(lnode, mptr, sizeof lnode);
1669                                 else if (i == 'F')
1670                                         safestrncpy(fuser, mptr, sizeof fuser);
1671                                 /* else if (i == 'O')
1672                                         cprintf("X-Citadel-Room: %s%s",
1673                                                 mptr, nl); */
1674                                 else if (i == 'N')
1675                                         safestrncpy(snode, mptr, sizeof snode);
1676                                 else if (i == 'R')
1677                                 {
1678                                         if (haschar(mptr, '@') == 0)
1679                                         {
1680                                                 cprintf("To: %s@%s%s", mptr, config.c_fqdn, nl);
1681                                         }
1682                                         else
1683                                         {
1684                                                 cprintf("To: %s%s", mptr, nl);
1685                                         }
1686                                 }
1687                                 else if (i == 'T') {
1688                                         datestring(datestamp, sizeof datestamp,
1689                                                 atol(mptr), DATESTRING_RFC822);
1690                                         cprintf("Date: %s%s", datestamp, nl);
1691                                 }
1692                         }
1693                 }
1694                 if (subject_found == 0) {
1695                         cprintf("Subject: (no subject)%s", nl);
1696                 }
1697         }
1698
1699         for (i=0; !IsEmptyStr(&suser[i]); ++i) {
1700                 suser[i] = tolower(suser[i]);
1701                 if (!isalnum(suser[i])) suser[i]='_';
1702         }
1703
1704         if (mode == MT_RFC822) {
1705                 if (!strcasecmp(snode, NODENAME)) {
1706                         safestrncpy(snode, FQDN, sizeof snode);
1707                 }
1708
1709                 /* Construct a fun message id */
1710                 cprintf("Message-ID: <%s", mid);/// todo: this possibly breaks threadding mails.
1711                 if (strchr(mid, '@')==NULL) {
1712                         cprintf("@%s", snode);
1713                 }
1714                 cprintf(">%s", nl);
1715
1716                 if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONONLY)) {
1717                         cprintf("From: \"----\" <x@x.org>%s", nl);
1718                 }
1719                 else if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONOPT)) {
1720                         cprintf("From: \"anonymous\" <x@x.org>%s", nl);
1721                 }
1722                 else if (!IsEmptyStr(fuser)) {
1723                         cprintf("From: \"%s\" <%s>%s", luser, fuser, nl);
1724                 }
1725                 else {
1726                         cprintf("From: \"%s\" <%s@%s>%s", luser, suser, snode, nl);
1727                 }
1728
1729                 cprintf("Organization: %s%s", lnode, nl);
1730
1731                 /* Blank line signifying RFC822 end-of-headers */
1732                 if (TheMessage->cm_format_type != FMT_RFC822) {
1733                         cprintf("%s", nl);
1734                 }
1735         }
1736
1737         /* end header processing loop ... at this point, we're in the text */
1738 START_TEXT:
1739         if (headers_only == HEADERS_FAST) goto DONE;
1740         mptr = TheMessage->cm_fields['M'];
1741
1742         /* Tell the client about the MIME parts in this message */
1743         if (TheMessage->cm_format_type == FMT_RFC822) {
1744                 if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
1745                         memset(&ma, 0, sizeof(struct ma_info));
1746                         mime_parser(mptr, NULL,
1747                                 (do_proto ? *list_this_part : NULL),
1748                                 (do_proto ? *list_this_pref : NULL),
1749                                 (do_proto ? *list_this_suff : NULL),
1750                                 (void *)&ma, 0);
1751                 }
1752                 else if (mode == MT_RFC822) {   /* unparsed RFC822 dump */
1753                         char *start_of_text = NULL;
1754                         start_of_text = strstr(mptr, "\n\r\n");
1755                         if (start_of_text == NULL) start_of_text = strstr(mptr, "\n\n");
1756                         if (start_of_text == NULL) start_of_text = mptr;
1757                         ++start_of_text;
1758                         start_of_text = strstr(start_of_text, "\n");
1759                         ++start_of_text;
1760
1761                         char outbuf[1024];
1762                         int outlen = 0;
1763                         int nllen = strlen(nl);
1764                         while (ch=*mptr, ch!=0) {
1765                                 if (ch==13) {
1766                                         /* do nothing */
1767                                 }
1768                                 else {
1769                                         if (
1770                                                 ((headers_only == HEADERS_NONE) && (mptr >= start_of_text))
1771                                            ||   ((headers_only == HEADERS_ONLY) && (mptr < start_of_text))
1772                                            ||   ((headers_only != HEADERS_NONE) && (headers_only != HEADERS_ONLY))
1773                                         ) {
1774                                                 if (ch == 10) {
1775                                                         sprintf(&outbuf[outlen], "%s", nl);
1776                                                         outlen += nllen;
1777                                                 }
1778                                                 else {
1779                                                         outbuf[outlen++] = ch;
1780                                                 }
1781                                         }
1782                                 }
1783                                 ++mptr;
1784                                 if (outlen > 1000) {
1785                                         client_write(outbuf, outlen);
1786                                         outlen = 0;
1787                                 }
1788                         }
1789                         if (outlen > 0) {
1790                                 client_write(outbuf, outlen);
1791                                 outlen = 0;
1792                         }
1793
1794                         goto DONE;
1795                 }
1796         }
1797
1798         if (headers_only == HEADERS_ONLY) {
1799                 goto DONE;
1800         }
1801
1802         /* signify start of msg text */
1803         if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
1804                 if (do_proto) cprintf("text\n");
1805         }
1806
1807         /* If the format type on disk is 1 (fixed-format), then we want
1808          * everything to be output completely literally ... regardless of
1809          * what message transfer format is in use.
1810          */
1811         if (TheMessage->cm_format_type == FMT_FIXED) {
1812                 int buflen;
1813                 if (mode == MT_MIME) {
1814                         cprintf("Content-type: text/plain\n\n");
1815                 }
1816                 *buf = '\0';
1817                 buflen = 0;
1818                 while (ch = *mptr++, ch > 0) {
1819                         if (ch == 13)
1820                                 ch = 10;
1821                         if ((ch == 10) || (buflen > 250)) {
1822                                 buf[buflen] = '\0';
1823                                 cprintf("%s%s", buf, nl);
1824                                 *buf = '\0';
1825                                 buflen = 0;
1826                         } else {
1827                                 buf[buflen] = ch;
1828                                 buflen++;
1829                         }
1830                 }
1831                 buf[buflen] = '\0';
1832                 if (!IsEmptyStr(buf))
1833                         cprintf("%s%s", buf, nl);
1834         }
1835
1836         /* If the message on disk is format 0 (Citadel vari-format), we
1837          * output using the formatter at 80 columns.  This is the final output
1838          * form if the transfer format is RFC822, but if the transfer format
1839          * is Citadel proprietary, it'll still work, because the indentation
1840          * for new paragraphs is correct and the client will reformat the
1841          * message to the reader's screen width.
1842          */
1843         if (TheMessage->cm_format_type == FMT_CITADEL) {
1844                 if (mode == MT_MIME) {
1845                         cprintf("Content-type: text/x-citadel-variformat\n\n");
1846                 }
1847                 memfmout(mptr, 0, nl);
1848         }
1849
1850         /* If the message on disk is format 4 (MIME), we've gotta hand it
1851          * off to the MIME parser.  The client has already been told that
1852          * this message is format 1 (fixed format), so the callback function
1853          * we use will display those parts as-is.
1854          */
1855         if (TheMessage->cm_format_type == FMT_RFC822) {
1856                 memset(&ma, 0, sizeof(struct ma_info));
1857
1858                 if (mode == MT_MIME) {
1859                         ma.use_fo_hooks = 0;
1860                         strcpy(ma.chosen_part, "1");
1861                         ma.chosen_pref = 9999;
1862                         mime_parser(mptr, NULL,
1863                                 *choose_preferred, *fixed_output_pre,
1864                                 *fixed_output_post, (void *)&ma, 0);
1865                         mime_parser(mptr, NULL,
1866                                 *output_preferred, NULL, NULL, (void *)&ma, CC->msg4_dont_decode);
1867                 }
1868                 else {
1869                         ma.use_fo_hooks = 1;
1870                         mime_parser(mptr, NULL,
1871                                 *fixed_output, *fixed_output_pre,
1872                                 *fixed_output_post, (void *)&ma, 0);
1873                 }
1874
1875         }
1876
1877 DONE:   /* now we're done */
1878         if (do_proto) cprintf("000\n");
1879         return(om_ok);
1880 }
1881
1882
1883
1884 /*
1885  * display a message (mode 0 - Citadel proprietary)
1886  */
1887 void cmd_msg0(char *cmdbuf)
1888 {
1889         long msgid;
1890         int headers_only = HEADERS_ALL;
1891
1892         msgid = extract_long(cmdbuf, 0);
1893         headers_only = extract_int(cmdbuf, 1);
1894
1895         CtdlOutputMsg(msgid, MT_CITADEL, headers_only, 1, 0, NULL);
1896         return;
1897 }
1898
1899
1900 /*
1901  * display a message (mode 2 - RFC822)
1902  */
1903 void cmd_msg2(char *cmdbuf)
1904 {
1905         long msgid;
1906         int headers_only = HEADERS_ALL;
1907
1908         msgid = extract_long(cmdbuf, 0);
1909         headers_only = extract_int(cmdbuf, 1);
1910
1911         CtdlOutputMsg(msgid, MT_RFC822, headers_only, 1, 1, NULL);
1912 }
1913
1914
1915
1916 /*
1917  * display a message (mode 3 - IGnet raw format - internal programs only)
1918  */
1919 void cmd_msg3(char *cmdbuf)
1920 {
1921         long msgnum;
1922         struct CtdlMessage *msg = NULL;
1923         struct ser_ret smr;
1924
1925         if (CC->internal_pgm == 0) {
1926                 cprintf("%d This command is for internal programs only.\n",
1927                         ERROR + HIGHER_ACCESS_REQUIRED);
1928                 return;
1929         }
1930
1931         msgnum = extract_long(cmdbuf, 0);
1932         msg = CtdlFetchMessage(msgnum, 1);
1933         if (msg == NULL) {
1934                 cprintf("%d Message %ld not found.\n",
1935                         ERROR + MESSAGE_NOT_FOUND, msgnum);
1936                 return;
1937         }
1938
1939         serialize_message(&smr, msg);
1940         CtdlFreeMessage(msg);
1941
1942         if (smr.len == 0) {
1943                 cprintf("%d Unable to serialize message\n",
1944                         ERROR + INTERNAL_ERROR);
1945                 return;
1946         }
1947
1948         cprintf("%d %ld\n", BINARY_FOLLOWS, (long)smr.len);
1949         client_write((char *)smr.ser, (int)smr.len);
1950         free(smr.ser);
1951 }
1952
1953
1954
1955 /*
1956  * Display a message using MIME content types
1957  */
1958 void cmd_msg4(char *cmdbuf)
1959 {
1960         long msgid;
1961         char section[64];
1962
1963         msgid = extract_long(cmdbuf, 0);
1964         extract_token(section, cmdbuf, 1, '|', sizeof section);
1965         CtdlOutputMsg(msgid, MT_MIME, 0, 1, 0, (section[0] ? section : NULL) );
1966 }
1967
1968
1969
1970 /*
1971  * Client tells us its preferred message format(s)
1972  */
1973 void cmd_msgp(char *cmdbuf)
1974 {
1975         if (!strcasecmp(cmdbuf, "dont_decode")) {
1976                 CC->msg4_dont_decode = 1;
1977                 cprintf("%d MSG4 will not pre-decode messages.\n", CIT_OK);
1978         }
1979         else {
1980                 safestrncpy(CC->preferred_formats, cmdbuf, sizeof(CC->preferred_formats));
1981                 cprintf("%d Preferred MIME formats have been set.\n", CIT_OK);
1982         }
1983 }
1984
1985
1986 /*
1987  * Open a component of a MIME message as a download file
1988  */
1989 void cmd_opna(char *cmdbuf)
1990 {
1991         long msgid;
1992         char desired_section[128];
1993
1994         msgid = extract_long(cmdbuf, 0);
1995         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
1996         safestrncpy(CC->download_desired_section, desired_section,
1997                 sizeof CC->download_desired_section);
1998         CtdlOutputMsg(msgid, MT_DOWNLOAD, 0, 1, 1, NULL);
1999 }
2000
2001
2002 /*
2003  * Open a component of a MIME message and transmit it all at once
2004  */
2005 void cmd_dlat(char *cmdbuf)
2006 {
2007         long msgid;
2008         char desired_section[128];
2009
2010         msgid = extract_long(cmdbuf, 0);
2011         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2012         safestrncpy(CC->download_desired_section, desired_section,
2013                 sizeof CC->download_desired_section);
2014         CtdlOutputMsg(msgid, MT_SPEW_SECTION, 0, 1, 1, NULL);
2015 }
2016
2017
2018 /*
2019  * Save one or more message pointers into a specified room
2020  * (Returns 0 for success, nonzero for failure)
2021  * roomname may be NULL to use the current room
2022  *
2023  * Note that the 'supplied_msg' field may be set to NULL, in which case
2024  * the message will be fetched from disk, by number, if we need to perform
2025  * replication checks.  This adds an additional database read, so if the
2026  * caller already has the message in memory then it should be supplied.  (Obviously
2027  * this mode of operation only works if we're saving a single message.)
2028  */
2029 int CtdlSaveMsgPointersInRoom(char *roomname, long newmsgidlist[], int num_newmsgs,
2030                                 int do_repl_check, struct CtdlMessage *supplied_msg)
2031 {
2032         int i, j, unique;
2033         char hold_rm[ROOMNAMELEN];
2034         struct cdbdata *cdbfr;
2035         int num_msgs;
2036         long *msglist;
2037         long highest_msg = 0L;
2038
2039         long msgid = 0;
2040         struct CtdlMessage *msg = NULL;
2041
2042         long *msgs_to_be_merged = NULL;
2043         int num_msgs_to_be_merged = 0;
2044
2045         CtdlLogPrintf(CTDL_DEBUG,
2046                 "CtdlSaveMsgPointersInRoom(room=%s, num_msgs=%d, repl=%d)\n",
2047                 roomname, num_newmsgs, do_repl_check);
2048
2049         strcpy(hold_rm, CC->room.QRname);
2050
2051         /* Sanity checks */
2052         if (newmsgidlist == NULL) return(ERROR + INTERNAL_ERROR);
2053         if (num_newmsgs < 1) return(ERROR + INTERNAL_ERROR);
2054         if (num_newmsgs > 1) supplied_msg = NULL;
2055
2056         /* Now the regular stuff */
2057         if (lgetroom(&CC->room,
2058            ((roomname != NULL) ? roomname : CC->room.QRname) )
2059            != 0) {
2060                 CtdlLogPrintf(CTDL_ERR, "No such room <%s>\n", roomname);
2061                 return(ERROR + ROOM_NOT_FOUND);
2062         }
2063
2064
2065         msgs_to_be_merged = malloc(sizeof(long) * num_newmsgs);
2066         num_msgs_to_be_merged = 0;
2067
2068
2069         cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
2070         if (cdbfr == NULL) {
2071                 msglist = NULL;
2072                 num_msgs = 0;
2073         } else {
2074                 msglist = (long *) cdbfr->ptr;
2075                 cdbfr->ptr = NULL;      /* CtdlSaveMsgPointerInRoom() now owns this memory */
2076                 num_msgs = cdbfr->len / sizeof(long);
2077                 cdb_free(cdbfr);
2078         }
2079
2080
2081         /* Create a list of msgid's which were supplied by the caller, but do
2082          * not already exist in the target room.  It is absolutely taboo to
2083          * have more than one reference to the same message in a room.
2084          */
2085         for (i=0; i<num_newmsgs; ++i) {
2086                 unique = 1;
2087                 if (num_msgs > 0) for (j=0; j<num_msgs; ++j) {
2088                         if (msglist[j] == newmsgidlist[i]) {
2089                                 unique = 0;
2090                         }
2091                 }
2092                 if (unique) {
2093                         msgs_to_be_merged[num_msgs_to_be_merged++] = newmsgidlist[i];
2094                 }
2095         }
2096
2097         CtdlLogPrintf(9, "%d unique messages to be merged\n", num_msgs_to_be_merged);
2098
2099         /*
2100          * Now merge the new messages
2101          */
2102         msglist = realloc(msglist, (sizeof(long) * (num_msgs + num_msgs_to_be_merged)) );
2103         if (msglist == NULL) {
2104                 CtdlLogPrintf(CTDL_ALERT, "ERROR: can't realloc message list!\n");
2105         }
2106         memcpy(&msglist[num_msgs], msgs_to_be_merged, (sizeof(long) * num_msgs_to_be_merged) );
2107         num_msgs += num_msgs_to_be_merged;
2108
2109         /* Sort the message list, so all the msgid's are in order */
2110         num_msgs = sort_msglist(msglist, num_msgs);
2111
2112         /* Determine the highest message number */
2113         highest_msg = msglist[num_msgs - 1];
2114
2115         /* Write it back to disk. */
2116         cdb_store(CDB_MSGLISTS, &CC->room.QRnumber, (int)sizeof(long),
2117                   msglist, (int)(num_msgs * sizeof(long)));
2118
2119         /* Free up the memory we used. */
2120         free(msglist);
2121
2122         /* Update the highest-message pointer and unlock the room. */
2123         CC->room.QRhighest = highest_msg;
2124         lputroom(&CC->room);
2125
2126         /* Perform replication checks if necessary */
2127         if ( (DoesThisRoomNeedEuidIndexing(&CC->room)) && (do_repl_check) ) {
2128                 CtdlLogPrintf(CTDL_DEBUG, "CtdlSaveMsgPointerInRoom() doing repl checks\n");
2129
2130                 for (i=0; i<num_msgs_to_be_merged; ++i) {
2131                         msgid = msgs_to_be_merged[i];
2132
2133                         if (supplied_msg != NULL) {
2134                                 msg = supplied_msg;
2135                         }
2136                         else {
2137                                 msg = CtdlFetchMessage(msgid, 0);
2138                         }
2139
2140                         if (msg != NULL) {
2141                                 ReplicationChecks(msg);
2142
2143                                 /* If the message has an Exclusive ID, index that... */
2144                                 if (msg->cm_fields['E'] != NULL) {
2145                                         index_message_by_euid(msg->cm_fields['E'], &CC->room, msgid);
2146                                 }
2147
2148                                 /* Free up the memory we may have allocated */
2149                                 if (msg != supplied_msg) {
2150                                         CtdlFreeMessage(msg);
2151                                 }
2152                         }
2153
2154                 }
2155         }
2156
2157         else {
2158                 CtdlLogPrintf(CTDL_DEBUG, "CtdlSaveMsgPointerInRoom() skips repl checks\n");
2159         }
2160
2161         /* Submit this room for processing by hooks */
2162         PerformRoomHooks(&CC->room);
2163
2164         /* Go back to the room we were in before we wandered here... */
2165         getroom(&CC->room, hold_rm);
2166
2167         /* Bump the reference count for all messages which were merged */
2168         for (i=0; i<num_msgs_to_be_merged; ++i) {
2169                 AdjRefCount(msgs_to_be_merged[i], +1);
2170         }
2171
2172         /* Free up memory... */
2173         if (msgs_to_be_merged != NULL) {
2174                 free(msgs_to_be_merged);
2175         }
2176
2177         /* Return success. */
2178         return (0);
2179 }
2180
2181
2182 /*
2183  * This is the same as CtdlSaveMsgPointersInRoom() but it only accepts
2184  * a single message.
2185  */
2186 int CtdlSaveMsgPointerInRoom(char *roomname, long msgid,
2187                         int do_repl_check, struct CtdlMessage *supplied_msg)
2188 {
2189         return CtdlSaveMsgPointersInRoom(roomname, &msgid, 1, do_repl_check, supplied_msg);
2190 }
2191
2192
2193
2194
2195 /*
2196  * Message base operation to save a new message to the message store
2197  * (returns new message number)
2198  *
2199  * This is the back end for CtdlSubmitMsg() and should not be directly
2200  * called by server-side modules.
2201  *
2202  */
2203 long send_message(struct CtdlMessage *msg) {
2204         long newmsgid;
2205         long retval;
2206         char msgidbuf[256];
2207         struct ser_ret smr;
2208         int is_bigmsg = 0;
2209         char *holdM = NULL;
2210
2211         /* Get a new message number */
2212         newmsgid = get_new_message_number();
2213         snprintf(msgidbuf, sizeof msgidbuf, "%010ld@%s", newmsgid, config.c_fqdn);
2214
2215         /* Generate an ID if we don't have one already */
2216         if (msg->cm_fields['I']==NULL) {
2217                 msg->cm_fields['I'] = strdup(msgidbuf);
2218         }
2219
2220         /* If the message is big, set its body aside for storage elsewhere */
2221         if (msg->cm_fields['M'] != NULL) {
2222                 if (strlen(msg->cm_fields['M']) > BIGMSG) {
2223                         is_bigmsg = 1;
2224                         holdM = msg->cm_fields['M'];
2225                         msg->cm_fields['M'] = NULL;
2226                 }
2227         }
2228
2229         /* Serialize our data structure for storage in the database */
2230         serialize_message(&smr, msg);
2231
2232         if (is_bigmsg) {
2233                 msg->cm_fields['M'] = holdM;
2234         }
2235
2236         if (smr.len == 0) {
2237                 cprintf("%d Unable to serialize message\n",
2238                         ERROR + INTERNAL_ERROR);
2239                 return (-1L);
2240         }
2241
2242         /* Write our little bundle of joy into the message base */
2243         if (cdb_store(CDB_MSGMAIN, &newmsgid, (int)sizeof(long),
2244                       smr.ser, smr.len) < 0) {
2245                 CtdlLogPrintf(CTDL_ERR, "Can't store message\n");
2246                 retval = 0L;
2247         } else {
2248                 if (is_bigmsg) {
2249                         cdb_store(CDB_BIGMSGS,
2250                                 &newmsgid,
2251                                 (int)sizeof(long),
2252                                 holdM,
2253                                 (strlen(holdM) + 1)
2254                         );
2255                 }
2256                 retval = newmsgid;
2257         }
2258
2259         /* Free the memory we used for the serialized message */
2260         free(smr.ser);
2261
2262         /* Return the *local* message ID to the caller
2263          * (even if we're storing an incoming network message)
2264          */
2265         return(retval);
2266 }
2267
2268
2269
2270 /*
2271  * Serialize a struct CtdlMessage into the format used on disk and network.
2272  *
2273  * This function loads up a "struct ser_ret" (defined in server.h) which
2274  * contains the length of the serialized message and a pointer to the
2275  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
2276  */
2277 void serialize_message(struct ser_ret *ret,             /* return values */
2278                         struct CtdlMessage *msg)        /* unserialized msg */
2279 {
2280         size_t wlen, fieldlen;
2281         int i;
2282         static char *forder = FORDER;
2283
2284         /*
2285          * Check for valid message format
2286          */
2287         if (is_valid_message(msg) == 0) {
2288                 CtdlLogPrintf(CTDL_ERR, "serialize_message() aborting due to invalid message\n");
2289                 ret->len = 0;
2290                 ret->ser = NULL;
2291                 return;
2292         }
2293
2294         ret->len = 3;
2295         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL)
2296                 ret->len = ret->len +
2297                         strlen(msg->cm_fields[(int)forder[i]]) + 2;
2298
2299         ret->ser = malloc(ret->len);
2300         if (ret->ser == NULL) {
2301                 CtdlLogPrintf(CTDL_ERR, "serialize_message() malloc(%ld) failed: %s\n",
2302                         (long)ret->len, strerror(errno));
2303                 ret->len = 0;
2304                 ret->ser = NULL;
2305                 return;
2306         }
2307
2308         ret->ser[0] = 0xFF;
2309         ret->ser[1] = msg->cm_anon_type;
2310         ret->ser[2] = msg->cm_format_type;
2311         wlen = 3;
2312
2313         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
2314                 fieldlen = strlen(msg->cm_fields[(int)forder[i]]);
2315                 ret->ser[wlen++] = (char)forder[i];
2316                 safestrncpy((char *)&ret->ser[wlen], msg->cm_fields[(int)forder[i]], fieldlen+1);
2317                 wlen = wlen + fieldlen + 1;
2318         }
2319         if (ret->len != wlen) CtdlLogPrintf(CTDL_ERR, "ERROR: len=%ld wlen=%ld\n",
2320                 (long)ret->len, (long)wlen);
2321
2322         return;
2323 }
2324
2325
2326 /*
2327  * Serialize a struct CtdlMessage into the format used on disk and network.
2328  *
2329  * This function loads up a "struct ser_ret" (defined in server.h) which
2330  * contains the length of the serialized message and a pointer to the
2331  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
2332  */
2333 void dump_message(struct CtdlMessage *msg,      /* unserialized msg */
2334                   long Siz)                     /* how many chars ? */
2335 {
2336         size_t wlen;
2337         int i;
2338         static char *forder = FORDER;
2339         char *buf;
2340
2341         /*
2342          * Check for valid message format
2343          */
2344         if (is_valid_message(msg) == 0) {
2345                 CtdlLogPrintf(CTDL_ERR, "dump_message() aborting due to invalid message\n");
2346                 return;
2347         }
2348
2349         buf = (char*) malloc (Siz + 1);
2350
2351         wlen = 3;
2352
2353         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
2354                         snprintf (buf, Siz, " msg[%c] = %s ...\n", (char) forder[i],
2355                                    msg->cm_fields[(int)forder[i]]);
2356                         client_write (buf, strlen(buf));
2357                 }
2358
2359         return;
2360 }
2361
2362
2363
2364 /*
2365  * Check to see if any messages already exist in the current room which
2366  * carry the same Exclusive ID as this one.  If any are found, delete them.
2367  */
2368 void ReplicationChecks(struct CtdlMessage *msg) {
2369         long old_msgnum = (-1L);
2370
2371         if (DoesThisRoomNeedEuidIndexing(&CC->room) == 0) return;
2372
2373         CtdlLogPrintf(CTDL_DEBUG, "Performing replication checks in <%s>\n",
2374                 CC->room.QRname);
2375
2376         /* No exclusive id?  Don't do anything. */
2377         if (msg == NULL) return;
2378         if (msg->cm_fields['E'] == NULL) return;
2379         if (IsEmptyStr(msg->cm_fields['E'])) return;
2380         /*CtdlLogPrintf(CTDL_DEBUG, "Exclusive ID: <%s> for room <%s>\n",
2381                 msg->cm_fields['E'], CC->room.QRname);*/
2382
2383         old_msgnum = locate_message_by_euid(msg->cm_fields['E'], &CC->room);
2384         if (old_msgnum > 0L) {
2385                 CtdlLogPrintf(CTDL_DEBUG, "ReplicationChecks() replacing message %ld\n", old_msgnum);
2386                 CtdlDeleteMessages(CC->room.QRname, &old_msgnum, 1, "");
2387         }
2388 }
2389
2390
2391
2392 /*
2393  * Save a message to disk and submit it into the delivery system.
2394  */
2395 long CtdlSubmitMsg(struct CtdlMessage *msg,     /* message to save */
2396                 struct recptypes *recps,        /* recipients (if mail) */
2397                 char *force                     /* force a particular room? */
2398 ) {
2399         char submit_filename[128];
2400         char generated_timestamp[32];
2401         char hold_rm[ROOMNAMELEN];
2402         char actual_rm[ROOMNAMELEN];
2403         char force_room[ROOMNAMELEN];
2404         char content_type[SIZ];                 /* We have to learn this */
2405         char recipient[SIZ];
2406         long newmsgid;
2407         char *mptr = NULL;
2408         struct ctdluser userbuf;
2409         int a, i;
2410         struct MetaData smi;
2411         FILE *network_fp = NULL;
2412         static int seqnum = 1;
2413         struct CtdlMessage *imsg = NULL;
2414         char *instr = NULL;
2415         size_t instr_alloc = 0;
2416         struct ser_ret smr;
2417         char *hold_R, *hold_D;
2418         char *collected_addresses = NULL;
2419         struct addresses_to_be_filed *aptr = NULL;
2420         char *saved_rfc822_version = NULL;
2421         int qualified_for_journaling = 0;
2422         struct CitContext *CCC = CC;            /* CachedCitContext - performance boost */
2423
2424         CtdlLogPrintf(CTDL_DEBUG, "CtdlSubmitMsg() called\n");
2425         if (is_valid_message(msg) == 0) return(-1);     /* self check */
2426
2427         /* If this message has no timestamp, we take the liberty of
2428          * giving it one, right now.
2429          */
2430         if (msg->cm_fields['T'] == NULL) {
2431                 snprintf(generated_timestamp, sizeof generated_timestamp, "%ld", (long)time(NULL));
2432                 msg->cm_fields['T'] = strdup(generated_timestamp);
2433         }
2434
2435         /* If this message has no path, we generate one.
2436          */
2437         if (msg->cm_fields['P'] == NULL) {
2438                 if (msg->cm_fields['A'] != NULL) {
2439                         msg->cm_fields['P'] = strdup(msg->cm_fields['A']);
2440                         for (a=0; !IsEmptyStr(&msg->cm_fields['P'][a]); ++a) {
2441                                 if (isspace(msg->cm_fields['P'][a])) {
2442                                         msg->cm_fields['P'][a] = ' ';
2443                                 }
2444                         }
2445                 }
2446                 else {
2447                         msg->cm_fields['P'] = strdup("unknown");
2448                 }
2449         }
2450
2451         if (force == NULL) {
2452                 strcpy(force_room, "");
2453         }
2454         else {
2455                 strcpy(force_room, force);
2456         }
2457
2458         /* Learn about what's inside, because it's what's inside that counts */
2459         if (msg->cm_fields['M'] == NULL) {
2460                 CtdlLogPrintf(CTDL_ERR, "ERROR: attempt to save message with NULL body\n");
2461                 return(-2);
2462         }
2463
2464         switch (msg->cm_format_type) {
2465         case 0:
2466                 strcpy(content_type, "text/x-citadel-variformat");
2467                 break;
2468         case 1:
2469                 strcpy(content_type, "text/plain");
2470                 break;
2471         case 4:
2472                 strcpy(content_type, "text/plain");
2473                 mptr = bmstrcasestr(msg->cm_fields['M'], "Content-type:");
2474                 if (mptr != NULL) {
2475                         char *aptr;
2476                         safestrncpy(content_type, &mptr[13], sizeof content_type);
2477                         striplt(content_type);
2478                         aptr = content_type;
2479                         while (!IsEmptyStr(aptr)) {
2480                                 if ((*aptr == ';')
2481                                     || (*aptr == ' ')
2482                                     || (*aptr == 13)
2483                                     || (*aptr == 10)) {
2484                                         *aptr = 0;
2485                                 }
2486                                 else aptr++;
2487                         }
2488                 }
2489         }
2490
2491         /* Goto the correct room */
2492         CtdlLogPrintf(CTDL_DEBUG, "Selected room %s\n", (recps) ? CCC->room.QRname : SENTITEMS);
2493         strcpy(hold_rm, CCC->room.QRname);
2494         strcpy(actual_rm, CCC->room.QRname);
2495         if (recps != NULL) {
2496                 strcpy(actual_rm, SENTITEMS);
2497         }
2498
2499         /* If the user is a twit, move to the twit room for posting */
2500         if (TWITDETECT) {
2501                 if (CCC->user.axlevel == 2) {
2502                         strcpy(hold_rm, actual_rm);
2503                         strcpy(actual_rm, config.c_twitroom);
2504                         CtdlLogPrintf(CTDL_DEBUG, "Diverting to twit room\n");
2505                 }
2506         }
2507
2508         /* ...or if this message is destined for Aide> then go there. */
2509         if (!IsEmptyStr(force_room)) {
2510                 strcpy(actual_rm, force_room);
2511         }
2512
2513         CtdlLogPrintf(CTDL_DEBUG, "Final selection: %s\n", actual_rm);
2514         if (strcasecmp(actual_rm, CCC->room.QRname)) {
2515                 /* getroom(&CCC->room, actual_rm); */
2516                 usergoto(actual_rm, 0, 1, NULL, NULL);
2517         }
2518
2519         /*
2520          * If this message has no O (room) field, generate one.
2521          */
2522         if (msg->cm_fields['O'] == NULL) {
2523                 msg->cm_fields['O'] = strdup(CCC->room.QRname);
2524         }
2525
2526         /* Perform "before save" hooks (aborting if any return nonzero) */
2527         CtdlLogPrintf(CTDL_DEBUG, "Performing before-save hooks\n");
2528         if (PerformMessageHooks(msg, EVT_BEFORESAVE) > 0) return(-3);
2529
2530         /*
2531          * If this message has an Exclusive ID, and the room is replication
2532          * checking enabled, then do replication checks.
2533          */
2534         if (DoesThisRoomNeedEuidIndexing(&CCC->room)) {
2535                 ReplicationChecks(msg);
2536         }
2537
2538         /* Save it to disk */
2539         CtdlLogPrintf(CTDL_DEBUG, "Saving to disk\n");
2540         newmsgid = send_message(msg);
2541         if (newmsgid <= 0L) return(-5);
2542
2543         /* Write a supplemental message info record.  This doesn't have to
2544          * be a critical section because nobody else knows about this message
2545          * yet.
2546          */
2547         CtdlLogPrintf(CTDL_DEBUG, "Creating MetaData record\n");
2548         memset(&smi, 0, sizeof(struct MetaData));
2549         smi.meta_msgnum = newmsgid;
2550         smi.meta_refcount = 0;
2551         safestrncpy(smi.meta_content_type, content_type,
2552                         sizeof smi.meta_content_type);
2553
2554         /*
2555          * Measure how big this message will be when rendered as RFC822.
2556          * We do this for two reasons:
2557          * 1. We need the RFC822 length for the new metadata record, so the
2558          *    POP and IMAP services don't have to calculate message lengths
2559          *    while the user is waiting (multiplied by potentially hundreds
2560          *    or thousands of messages).
2561          * 2. If journaling is enabled, we will need an RFC822 version of the
2562          *    message to attach to the journalized copy.
2563          */
2564         if (CCC->redirect_buffer != NULL) {
2565                 CtdlLogPrintf(CTDL_ALERT, "CCC->redirect_buffer is not NULL during message submission!\n");
2566                 abort();
2567         }
2568         CCC->redirect_buffer = malloc(SIZ);
2569         CCC->redirect_len = 0;
2570         CCC->redirect_alloc = SIZ;
2571         CtdlOutputPreLoadedMsg(msg, MT_RFC822, HEADERS_ALL, 0, 1);
2572         smi.meta_rfc822_length = CCC->redirect_len;
2573         saved_rfc822_version = CCC->redirect_buffer;
2574         CCC->redirect_buffer = NULL;
2575         CCC->redirect_len = 0;
2576         CCC->redirect_alloc = 0;
2577
2578         PutMetaData(&smi);
2579
2580         /* Now figure out where to store the pointers */
2581         CtdlLogPrintf(CTDL_DEBUG, "Storing pointers\n");
2582
2583         /* If this is being done by the networker delivering a private
2584          * message, we want to BYPASS saving the sender's copy (because there
2585          * is no local sender; it would otherwise go to the Trashcan).
2586          */
2587         if ((!CCC->internal_pgm) || (recps == NULL)) {
2588                 if (CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 1, msg) != 0) {
2589                         CtdlLogPrintf(CTDL_ERR, "ERROR saving message pointer!\n");
2590                         CtdlSaveMsgPointerInRoom(config.c_aideroom, newmsgid, 0, msg);
2591                 }
2592         }
2593
2594         /* For internet mail, drop a copy in the outbound queue room */
2595         if (recps != NULL)
2596          if (recps->num_internet > 0) {
2597                 CtdlSaveMsgPointerInRoom(SMTP_SPOOLOUT_ROOM, newmsgid, 0, msg);
2598         }
2599
2600         /* If other rooms are specified, drop them there too. */
2601         if (recps != NULL)
2602          if (recps->num_room > 0)
2603           for (i=0; i<num_tokens(recps->recp_room, '|'); ++i) {
2604                 extract_token(recipient, recps->recp_room, i,
2605                                         '|', sizeof recipient);
2606                 CtdlLogPrintf(CTDL_DEBUG, "Delivering to room <%s>\n", recipient);
2607                 CtdlSaveMsgPointerInRoom(recipient, newmsgid, 0, msg);
2608         }
2609
2610         /* Bump this user's messages posted counter. */
2611         CtdlLogPrintf(CTDL_DEBUG, "Updating user\n");
2612         lgetuser(&CCC->user, CCC->curr_user);
2613         CCC->user.posted = CCC->user.posted + 1;
2614         lputuser(&CCC->user);
2615
2616         /* If this is private, local mail, make a copy in the
2617          * recipient's mailbox and bump the reference count.
2618          */
2619         if (recps != NULL)
2620          if (recps->num_local > 0)
2621           for (i=0; i<num_tokens(recps->recp_local, '|'); ++i) {
2622                 extract_token(recipient, recps->recp_local, i,
2623                                         '|', sizeof recipient);
2624                 CtdlLogPrintf(CTDL_DEBUG, "Delivering private local mail to <%s>\n",
2625                         recipient);
2626                 if (getuser(&userbuf, recipient) == 0) {
2627                         // Add a flag so the Funambol module knows its mail
2628                         msg->cm_fields['W'] = strdup(recipient);
2629                         MailboxName(actual_rm, sizeof actual_rm, &userbuf, MAILROOM);
2630                         CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 0, msg);
2631                         BumpNewMailCounter(userbuf.usernum);
2632                         if (!IsEmptyStr(config.c_funambol_host) || !IsEmptyStr(config.c_pager_program)) {
2633                         /* Generate a instruction message for the Funambol notification
2634                          * server, in the same style as the SMTP queue
2635                          */
2636                            instr_alloc = 1024;
2637                            instr = malloc(instr_alloc);
2638                            snprintf(instr, instr_alloc,
2639                         "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
2640                         "bounceto|%s@%s\n",
2641                         SPOOLMIME, newmsgid, (long)time(NULL),
2642                         msg->cm_fields['A'], msg->cm_fields['N']
2643                         );
2644
2645                            imsg = malloc(sizeof(struct CtdlMessage));
2646                            memset(imsg, 0, sizeof(struct CtdlMessage));
2647                            imsg->cm_magic = CTDLMESSAGE_MAGIC;
2648                            imsg->cm_anon_type = MES_NORMAL;
2649                            imsg->cm_format_type = FMT_RFC822;
2650                            imsg->cm_fields['A'] = strdup("Citadel");
2651                            imsg->cm_fields['J'] = strdup("do not journal");
2652                            imsg->cm_fields['M'] = instr;        /* imsg owns this memory now */
2653                            imsg->cm_fields['W'] = strdup(recipient);
2654                            CtdlSubmitMsg(imsg, NULL, FNBL_QUEUE_ROOM);
2655                            CtdlFreeMessage(imsg);
2656                         }
2657                 }
2658                 else {
2659                         CtdlLogPrintf(CTDL_DEBUG, "No user <%s>\n", recipient);
2660                         CtdlSaveMsgPointerInRoom(config.c_aideroom,
2661                                 newmsgid, 0, msg);
2662                 }
2663         }
2664
2665         /* Perform "after save" hooks */
2666         CtdlLogPrintf(CTDL_DEBUG, "Performing after-save hooks\n");
2667         PerformMessageHooks(msg, EVT_AFTERSAVE);
2668
2669         /* For IGnet mail, we have to save a new copy into the spooler for
2670          * each recipient, with the R and D fields set to the recipient and
2671          * destination-node.  This has two ugly side effects: all other
2672          * recipients end up being unlisted in this recipient's copy of the
2673          * message, and it has to deliver multiple messages to the same
2674          * node.  We'll revisit this again in a year or so when everyone has
2675          * a network spool receiver that can handle the new style messages.
2676          */
2677         if (recps != NULL)
2678          if (recps->num_ignet > 0)
2679           for (i=0; i<num_tokens(recps->recp_ignet, '|'); ++i) {
2680                 extract_token(recipient, recps->recp_ignet, i,
2681                                 '|', sizeof recipient);
2682
2683                 hold_R = msg->cm_fields['R'];
2684                 hold_D = msg->cm_fields['D'];
2685                 msg->cm_fields['R'] = malloc(SIZ);
2686                 msg->cm_fields['D'] = malloc(128);
2687                 extract_token(msg->cm_fields['R'], recipient, 0, '@', SIZ);
2688                 extract_token(msg->cm_fields['D'], recipient, 1, '@', 128);
2689
2690                 serialize_message(&smr, msg);
2691                 if (smr.len > 0) {
2692                         snprintf(submit_filename, sizeof submit_filename,
2693                                          "%s/netmail.%04lx.%04x.%04x",
2694                                          ctdl_netin_dir,
2695                                          (long) getpid(), CCC->cs_pid, ++seqnum);
2696                         network_fp = fopen(submit_filename, "wb+");
2697                         if (network_fp != NULL) {
2698                                 fwrite(smr.ser, smr.len, 1, network_fp);
2699                                 fclose(network_fp);
2700                         }
2701                         free(smr.ser);
2702                 }
2703
2704                 free(msg->cm_fields['R']);
2705                 free(msg->cm_fields['D']);
2706                 msg->cm_fields['R'] = hold_R;
2707                 msg->cm_fields['D'] = hold_D;
2708         }
2709
2710         /* Go back to the room we started from */
2711         CtdlLogPrintf(CTDL_DEBUG, "Returning to original room %s\n", hold_rm);
2712         if (strcasecmp(hold_rm, CCC->room.QRname))
2713                 usergoto(hold_rm, 0, 1, NULL, NULL);
2714
2715         /* For internet mail, generate delivery instructions.
2716          * Yes, this is recursive.  Deal with it.  Infinite recursion does
2717          * not happen because the delivery instructions message does not
2718          * contain a recipient.
2719          */
2720         if (recps != NULL)
2721          if (recps->num_internet > 0) {
2722                 CtdlLogPrintf(CTDL_DEBUG, "Generating delivery instructions\n");
2723                 instr_alloc = 1024;
2724                 instr = malloc(instr_alloc);
2725                 snprintf(instr, instr_alloc,
2726                         "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
2727                         "bounceto|%s@%s\n",
2728                         SPOOLMIME, newmsgid, (long)time(NULL),
2729                         msg->cm_fields['A'], msg->cm_fields['N']
2730                 );
2731
2732                 for (i=0; i<num_tokens(recps->recp_internet, '|'); ++i) {
2733                         size_t tmp = strlen(instr);
2734                         extract_token(recipient, recps->recp_internet, i, '|', sizeof recipient);
2735                         if ((tmp + strlen(recipient) + 32) > instr_alloc) {
2736                                 instr_alloc = instr_alloc * 2;
2737                                 instr = realloc(instr, instr_alloc);
2738                         }
2739                         snprintf(&instr[tmp], instr_alloc - tmp, "remote|%s|0||\n", recipient);
2740                 }
2741
2742                 imsg = malloc(sizeof(struct CtdlMessage));
2743                 memset(imsg, 0, sizeof(struct CtdlMessage));
2744                 imsg->cm_magic = CTDLMESSAGE_MAGIC;
2745                 imsg->cm_anon_type = MES_NORMAL;
2746                 imsg->cm_format_type = FMT_RFC822;
2747                 imsg->cm_fields['A'] = strdup("Citadel");
2748                 imsg->cm_fields['J'] = strdup("do not journal");
2749                 imsg->cm_fields['M'] = instr;   /* imsg owns this memory now */
2750                 CtdlSubmitMsg(imsg, NULL, SMTP_SPOOLOUT_ROOM);
2751                 CtdlFreeMessage(imsg);
2752         }
2753
2754         /*
2755          * Any addresses to harvest for someone's address book?
2756          */
2757         if ( (CCC->logged_in) && (recps != NULL) ) {
2758                 collected_addresses = harvest_collected_addresses(msg);
2759         }
2760
2761         if (collected_addresses != NULL) {
2762                 begin_critical_section(S_ATBF);
2763                 aptr = (struct addresses_to_be_filed *)
2764                         malloc(sizeof(struct addresses_to_be_filed));
2765                 aptr->next = atbf;
2766                 MailboxName(actual_rm, sizeof actual_rm,
2767                         &CCC->user, USERCONTACTSROOM);
2768                 aptr->roomname = strdup(actual_rm);
2769                 aptr->collected_addresses = collected_addresses;
2770                 atbf = aptr;
2771                 end_critical_section(S_ATBF);
2772         }
2773
2774         /*
2775          * Determine whether this message qualifies for journaling.
2776          */
2777         if (msg->cm_fields['J'] != NULL) {
2778                 qualified_for_journaling = 0;
2779         }
2780         else {
2781                 if (recps == NULL) {
2782                         qualified_for_journaling = config.c_journal_pubmsgs;
2783                 }
2784                 else if (recps->num_local + recps->num_ignet + recps->num_internet > 0) {
2785                         qualified_for_journaling = config.c_journal_email;
2786                 }
2787                 else {
2788                         qualified_for_journaling = config.c_journal_pubmsgs;
2789                 }
2790         }
2791
2792         /*
2793          * Do we have to perform journaling?  If so, hand off the saved
2794          * RFC822 version will be handed off to the journaler for background
2795          * submit.  Otherwise, we have to free the memory ourselves.
2796          */
2797         if (saved_rfc822_version != NULL) {
2798                 if (qualified_for_journaling) {
2799                         JournalBackgroundSubmit(msg, saved_rfc822_version, recps);
2800                 }
2801                 else {
2802                         free(saved_rfc822_version);
2803                 }
2804         }
2805
2806         /* Done. */
2807         return(newmsgid);
2808 }
2809
2810
2811
2812
2813
2814 /*
2815  * Convenience function for generating small administrative messages.
2816  */
2817 void quickie_message(char *from, char *fromaddr, char *to, char *room, char *text,
2818                         int format_type, char *subject)
2819 {
2820         struct CtdlMessage *msg;
2821         struct recptypes *recp = NULL;
2822
2823         msg = malloc(sizeof(struct CtdlMessage));
2824         memset(msg, 0, sizeof(struct CtdlMessage));
2825         msg->cm_magic = CTDLMESSAGE_MAGIC;
2826         msg->cm_anon_type = MES_NORMAL;
2827         msg->cm_format_type = format_type;
2828
2829         if (from != NULL) {
2830                 msg->cm_fields['A'] = strdup(from);
2831         }
2832         else if (fromaddr != NULL) {
2833                 msg->cm_fields['A'] = strdup(fromaddr);
2834                 if (strchr(msg->cm_fields['A'], '@')) {
2835                         *strchr(msg->cm_fields['A'], '@') = 0;
2836                 }
2837         }
2838         else {
2839                 msg->cm_fields['A'] = strdup("Citadel");
2840         }
2841
2842         if (fromaddr != NULL) msg->cm_fields['F'] = strdup(fromaddr);
2843         if (room != NULL) msg->cm_fields['O'] = strdup(room);
2844         msg->cm_fields['N'] = strdup(NODENAME);
2845         if (to != NULL) {
2846                 msg->cm_fields['R'] = strdup(to);
2847                 recp = validate_recipients(to, NULL, 0);
2848         }
2849         if (subject != NULL) {
2850                 msg->cm_fields['U'] = strdup(subject);
2851         }
2852         msg->cm_fields['M'] = strdup(text);
2853
2854         CtdlSubmitMsg(msg, recp, room);
2855         CtdlFreeMessage(msg);
2856         if (recp != NULL) free_recipients(recp);
2857 }
2858
2859
2860
2861 /*
2862  * Back end function used by CtdlMakeMessage() and similar functions
2863  */
2864 char *CtdlReadMessageBody(char *terminator,     /* token signalling EOT */
2865                         size_t maxlen,          /* maximum message length */
2866                         char *exist,            /* if non-null, append to it;
2867                                                    exist is ALWAYS freed  */
2868                         int crlf,               /* CRLF newlines instead of LF */
2869                         int sock                /* socket handle or 0 for this session's client socket */
2870                         ) {
2871         char buf[1024];
2872         int linelen;
2873         size_t message_len = 0;
2874         size_t buffer_len = 0;
2875         char *ptr;
2876         char *m;
2877         int flushing = 0;
2878         int finished = 0;
2879         int dotdot = 0;
2880
2881         if (exist == NULL) {
2882                 m = malloc(4096);
2883                 m[0] = 0;
2884                 buffer_len = 4096;
2885                 message_len = 0;
2886         }
2887         else {
2888                 message_len = strlen(exist);
2889                 buffer_len = message_len + 4096;
2890                 m = realloc(exist, buffer_len);
2891                 if (m == NULL) {
2892                         free(exist);
2893                         return m;
2894                 }
2895         }
2896
2897         /* Do we need to change leading ".." to "." for SMTP escaping? */
2898         if (!strcmp(terminator, ".")) {
2899                 dotdot = 1;
2900         }
2901
2902         /* flush the input if we have nowhere to store it */
2903         if (m == NULL) {
2904                 flushing = 1;
2905         }
2906
2907         /* read in the lines of message text one by one */
2908         do {
2909                 if (sock > 0) {
2910                         if (sock_getln(sock, buf, (sizeof buf - 3)) < 0) finished = 1;
2911                 }
2912                 else {
2913                         if (client_getln(buf, (sizeof buf - 3)) < 1) finished = 1;
2914                 }
2915                 if (!strcmp(buf, terminator)) finished = 1;
2916                 if (crlf) {
2917                         strcat(buf, "\r\n");
2918                 }
2919                 else {
2920                         strcat(buf, "\n");
2921                 }
2922
2923                 /* Unescape SMTP-style input of two dots at the beginning of the line */
2924                 if (dotdot) {
2925                         if (!strncmp(buf, "..", 2)) {
2926                                 strcpy(buf, &buf[1]);
2927                         }
2928                 }
2929
2930                 if ( (!flushing) && (!finished) ) {
2931                         /* Measure the line */
2932                         linelen = strlen(buf);
2933
2934                         /* augment the buffer if we have to */
2935                         if ((message_len + linelen) >= buffer_len) {
2936                                 ptr = realloc(m, (buffer_len * 2) );
2937                                 if (ptr == NULL) {      /* flush if can't allocate */
2938                                         flushing = 1;
2939                                 } else {
2940                                         buffer_len = (buffer_len * 2);
2941                                         m = ptr;
2942                                         CtdlLogPrintf(CTDL_DEBUG, "buffer_len is now %ld\n", (long)buffer_len);
2943                                 }
2944                         }
2945
2946                         /* Add the new line to the buffer.  NOTE: this loop must avoid
2947                         * using functions like strcat() and strlen() because they
2948                         * traverse the entire buffer upon every call, and doing that
2949                         * for a multi-megabyte message slows it down beyond usability.
2950                         */
2951                         strcpy(&m[message_len], buf);
2952                         message_len += linelen;
2953                 }
2954
2955                 /* if we've hit the max msg length, flush the rest */
2956                 if (message_len >= maxlen) flushing = 1;
2957
2958         } while (!finished);
2959         return(m);
2960 }
2961
2962
2963
2964
2965 /*
2966  * Build a binary message to be saved on disk.
2967  * (NOTE: if you supply 'preformatted_text', the buffer you give it
2968  * will become part of the message.  This means you are no longer
2969  * responsible for managing that memory -- it will be freed along with
2970  * the rest of the fields when CtdlFreeMessage() is called.)
2971  */
2972
2973 struct CtdlMessage *CtdlMakeMessage(
2974         struct ctdluser *author,        /* author's user structure */
2975         char *recipient,                /* NULL if it's not mail */
2976         char *recp_cc,                  /* NULL if it's not mail */
2977         char *room,                     /* room where it's going */
2978         int type,                       /* see MES_ types in header file */
2979         int format_type,                /* variformat, plain text, MIME... */
2980         char *fake_name,                /* who we're masquerading as */
2981         char *my_email,                 /* which of my email addresses to use (empty is ok) */
2982         char *subject,                  /* Subject (optional) */
2983         char *supplied_euid,            /* ...or NULL if this is irrelevant */
2984         char *preformatted_text         /* ...or NULL to read text from client */
2985 ) {
2986         char dest_node[256];
2987         char buf[1024];
2988         struct CtdlMessage *msg;
2989
2990         msg = malloc(sizeof(struct CtdlMessage));
2991         memset(msg, 0, sizeof(struct CtdlMessage));
2992         msg->cm_magic = CTDLMESSAGE_MAGIC;
2993         msg->cm_anon_type = type;
2994         msg->cm_format_type = format_type;
2995
2996         /* Don't confuse the poor folks if it's not routed mail. */
2997         strcpy(dest_node, "");
2998
2999         striplt(recipient);
3000         striplt(recp_cc);
3001
3002         /* Path or Return-Path */
3003         if (my_email == NULL) my_email = "";
3004
3005         if (!IsEmptyStr(my_email)) {
3006                 msg->cm_fields['P'] = strdup(my_email);
3007         }
3008         else {
3009                 snprintf(buf, sizeof buf, "%s", author->fullname);
3010                 msg->cm_fields['P'] = strdup(buf);
3011         }
3012         convert_spaces_to_underscores(msg->cm_fields['P']);
3013
3014         snprintf(buf, sizeof buf, "%ld", (long)time(NULL));     /* timestamp */
3015         msg->cm_fields['T'] = strdup(buf);
3016
3017         if (fake_name[0])                                       /* author */
3018                 msg->cm_fields['A'] = strdup(fake_name);
3019         else
3020                 msg->cm_fields['A'] = strdup(author->fullname);
3021
3022         if (CC->room.QRflags & QR_MAILBOX) {            /* room */
3023                 msg->cm_fields['O'] = strdup(&CC->room.QRname[11]);
3024         }
3025         else {
3026                 msg->cm_fields['O'] = strdup(CC->room.QRname);
3027         }
3028
3029         msg->cm_fields['N'] = strdup(NODENAME);         /* nodename */
3030         msg->cm_fields['H'] = strdup(HUMANNODE);                /* hnodename */
3031
3032         if (recipient[0] != 0) {
3033                 msg->cm_fields['R'] = strdup(recipient);
3034         }
3035         if (recp_cc[0] != 0) {
3036                 msg->cm_fields['Y'] = strdup(recp_cc);
3037         }
3038         if (dest_node[0] != 0) {
3039                 msg->cm_fields['D'] = strdup(dest_node);
3040         }
3041
3042         if (!IsEmptyStr(my_email)) {
3043                 msg->cm_fields['F'] = strdup(my_email);
3044         }
3045         else if ( (author == &CC->user) && (!IsEmptyStr(CC->cs_inet_email)) ) {
3046                 msg->cm_fields['F'] = strdup(CC->cs_inet_email);
3047         }
3048
3049         if (subject != NULL) {
3050                 long length;
3051                 striplt(subject);
3052                 length = strlen(subject);
3053                 if (length > 0) {
3054                         long i;
3055                         long IsAscii;
3056                         IsAscii = -1;
3057                         i = 0;
3058                         while ((subject[i] != '\0') &&
3059                                (IsAscii = isascii(subject[i]) != 0 ))
3060                                 i++;
3061                         if (IsAscii != 0)
3062                                 msg->cm_fields['U'] = strdup(subject);
3063                         else /* ok, we've got utf8 in the string. */
3064                         {
3065                                 msg->cm_fields['U'] = rfc2047encode(subject, length);
3066                         }
3067
3068                 }
3069         }
3070
3071         if (supplied_euid != NULL) {
3072                 msg->cm_fields['E'] = strdup(supplied_euid);
3073         }
3074
3075         if (preformatted_text != NULL) {
3076                 msg->cm_fields['M'] = preformatted_text;
3077         }
3078         else {
3079                 msg->cm_fields['M'] = CtdlReadMessageBody("000", config.c_maxmsglen, NULL, 0, 0);
3080         }
3081
3082         return(msg);
3083 }
3084
3085
3086 /*
3087  * Check to see whether we have permission to post a message in the current
3088  * room.  Returns a *CITADEL ERROR CODE* and puts a message in errmsgbuf, or
3089  * returns 0 on success.
3090  */
3091 int CtdlDoIHavePermissionToPostInThisRoom(char *errmsgbuf,
3092                                           size_t n,
3093                                           const char* RemoteIdentifier,
3094                                           int PostPublic) {
3095         int ra;
3096
3097         if (!(CC->logged_in) &&
3098             (PostPublic == POST_LOGGED_IN)) {
3099                 snprintf(errmsgbuf, n, "Not logged in.");
3100                 return (ERROR + NOT_LOGGED_IN);
3101         }
3102         else if (PostPublic == CHECK_EXISTANCE) {
3103                 return (0); // We're Evaling whether a recipient exists
3104         }
3105         else if (!(CC->logged_in)) {
3106
3107                 if ((CC->room.QRflags & QR_READONLY)) {
3108                         snprintf(errmsgbuf, n, "Not logged in.");
3109                         return (ERROR + NOT_LOGGED_IN);
3110                 }
3111                 if (CC->room.QRflags2 & QR2_MODERATED) {
3112                         snprintf(errmsgbuf, n, "Not logged in Moderation feature not yet implemented!");
3113                         return (ERROR + NOT_LOGGED_IN);
3114                 }
3115                 if ((PostPublic!=POST_LMTP) &&(CC->room.QRflags2 & QR2_SMTP_PUBLIC) == 0) {
3116                         SpoolControl *sc;
3117                         char filename[SIZ];
3118                         int found;
3119
3120                         if (RemoteIdentifier == NULL)
3121                         {
3122                                 snprintf(errmsgbuf, n, "Need sender to permit access.");
3123                                 return (ERROR + USERNAME_REQUIRED);
3124                         }
3125
3126                         assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
3127                         begin_critical_section(S_NETCONFIGS);
3128                         if (!read_spoolcontrol_file(&sc, filename))
3129                         {
3130                                 end_critical_section(S_NETCONFIGS);
3131                                 snprintf(errmsgbuf, n,
3132                                         "This mailing list only accepts posts from subscribers.");
3133                                 return (ERROR + NO_SUCH_USER);
3134                         }
3135                         end_critical_section(S_NETCONFIGS);
3136                         found = is_recipient (sc, RemoteIdentifier);
3137                         free_spoolcontrol_struct(&sc);
3138                         if (found) {
3139                                 return (0);
3140                         }
3141                         else {
3142                                 snprintf(errmsgbuf, n,
3143                                         "This mailing list only accepts posts from subscribers.");
3144                                 return (ERROR + NO_SUCH_USER);
3145                         }
3146                 }
3147                 return (0);
3148
3149         }
3150
3151         if ((CC->user.axlevel < 2)
3152             && ((CC->room.QRflags & QR_MAILBOX) == 0)) {
3153                 snprintf(errmsgbuf, n, "Need to be validated to enter "
3154                                 "(except in %s> to sysop)", MAILROOM);
3155                 return (ERROR + HIGHER_ACCESS_REQUIRED);
3156         }
3157
3158         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
3159         if (!(ra & UA_POSTALLOWED)) {
3160                 snprintf(errmsgbuf, n, "Higher access is required to post in this room.");
3161                 return (ERROR + HIGHER_ACCESS_REQUIRED);
3162         }
3163
3164         strcpy(errmsgbuf, "Ok");
3165         return(0);
3166 }
3167
3168
3169 /*
3170  * Check to see if the specified user has Internet mail permission
3171  * (returns nonzero if permission is granted)
3172  */
3173 int CtdlCheckInternetMailPermission(struct ctdluser *who) {
3174
3175         /* Do not allow twits to send Internet mail */
3176         if (who->axlevel <= 2) return(0);
3177
3178         /* Globally enabled? */
3179         if (config.c_restrict == 0) return(1);
3180
3181         /* User flagged ok? */
3182         if (who->flags & US_INTERNET) return(2);
3183
3184         /* Aide level access? */
3185         if (who->axlevel >= 6) return(3);
3186
3187         /* No mail for you! */
3188         return(0);
3189 }
3190
3191
3192 /*
3193  * Validate recipients, count delivery types and errors, and handle aliasing
3194  * FIXME check for dupes!!!!!
3195  *
3196  * Returns 0 if all addresses are ok, ret->num_error = -1 if no addresses
3197  * were specified, or the number of addresses found invalid.
3198  *
3199  * Caller needs to free the result using free_recipients()
3200  */
3201 struct recptypes *validate_recipients(char *supplied_recipients,
3202                                       const char *RemoteIdentifier,
3203                                       int Flags) {
3204         struct recptypes *ret;
3205         char *recipients = NULL;
3206         char this_recp[256];
3207         char this_recp_cooked[256];
3208         char append[SIZ];
3209         int num_recps = 0;
3210         int i, j;
3211         int mailtype;
3212         int invalid;
3213         struct ctdluser tempUS;
3214         struct ctdlroom tempQR;
3215         struct ctdlroom tempQR2;
3216         int err = 0;
3217         char errmsg[SIZ];
3218         int in_quotes = 0;
3219
3220         /* Initialize */
3221         ret = (struct recptypes *) malloc(sizeof(struct recptypes));
3222         if (ret == NULL) return(NULL);
3223
3224         /* Set all strings to null and numeric values to zero */
3225         memset(ret, 0, sizeof(struct recptypes));
3226
3227         if (supplied_recipients == NULL) {
3228                 recipients = strdup("");
3229         }
3230         else {
3231                 recipients = strdup(supplied_recipients);
3232         }
3233
3234         /* Allocate some memory.  Yes, this allocates 500% more memory than we will
3235          * actually need, but it's healthier for the heap than doing lots of tiny
3236          * realloc() calls instead.
3237          */
3238
3239         ret->errormsg = malloc(strlen(recipients) + 1024);
3240         ret->recp_local = malloc(strlen(recipients) + 1024);
3241         ret->recp_internet = malloc(strlen(recipients) + 1024);
3242         ret->recp_ignet = malloc(strlen(recipients) + 1024);
3243         ret->recp_room = malloc(strlen(recipients) + 1024);
3244         ret->display_recp = malloc(strlen(recipients) + 1024);
3245
3246         ret->errormsg[0] = 0;
3247         ret->recp_local[0] = 0;
3248         ret->recp_internet[0] = 0;
3249         ret->recp_ignet[0] = 0;
3250         ret->recp_room[0] = 0;
3251         ret->display_recp[0] = 0;
3252
3253         ret->recptypes_magic = RECPTYPES_MAGIC;
3254
3255         /* Change all valid separator characters to commas */
3256         for (i=0; !IsEmptyStr(&recipients[i]); ++i) {
3257                 if ((recipients[i] == ';') || (recipients[i] == '|')) {
3258                         recipients[i] = ',';
3259                 }
3260         }
3261
3262         /* Now start extracting recipients... */
3263
3264         while (!IsEmptyStr(recipients)) {
3265
3266                 for (i=0; i<=strlen(recipients); ++i) {
3267                         if (recipients[i] == '\"') in_quotes = 1 - in_quotes;
3268                         if ( ( (recipients[i] == ',') && (!in_quotes) ) || (recipients[i] == 0) ) {
3269                                 safestrncpy(this_recp, recipients, i+1);
3270                                 this_recp[i] = 0;
3271                                 if (recipients[i] == ',') {
3272                                         strcpy(recipients, &recipients[i+1]);
3273                                 }
3274                                 else {
3275                                         strcpy(recipients, "");
3276                                 }
3277                                 break;
3278                         }
3279                 }
3280
3281                 striplt(this_recp);
3282                 if (IsEmptyStr(this_recp))
3283                         break;
3284                 CtdlLogPrintf(CTDL_DEBUG, "Evaluating recipient #%d: %s\n", num_recps, this_recp);
3285                 ++num_recps;
3286                 mailtype = alias(this_recp);
3287                 mailtype = alias(this_recp);
3288                 mailtype = alias(this_recp);
3289                 j = 0;
3290                 for (j=0; !IsEmptyStr(&this_recp[j]); ++j) {
3291                         if (this_recp[j]=='_') {
3292                                 this_recp_cooked[j] = ' ';
3293                         }
3294                         else {
3295                                 this_recp_cooked[j] = this_recp[j];
3296                         }
3297                 }
3298                 this_recp_cooked[j] = '\0';
3299                 invalid = 0;
3300                 errmsg[0] = 0;
3301                 switch(mailtype) {
3302                         case MES_LOCAL:
3303                                 if (!strcasecmp(this_recp, "sysop")) {
3304                                         ++ret->num_room;
3305                                         strcpy(this_recp, config.c_aideroom);
3306                                         if (!IsEmptyStr(ret->recp_room)) {
3307                                                 strcat(ret->recp_room, "|");
3308                                         }
3309                                         strcat(ret->recp_room, this_recp);
3310                                 }
3311                                 else if ( (!strncasecmp(this_recp, "room_", 5))
3312                                       && (!getroom(&tempQR, &this_recp_cooked[5])) ) {
3313
3314                                         /* Save room so we can restore it later */
3315                                         tempQR2 = CC->room;
3316                                         CC->room = tempQR;
3317
3318                                         /* Check permissions to send mail to this room */
3319                                         err = CtdlDoIHavePermissionToPostInThisRoom(errmsg,
3320                                                                                     sizeof errmsg,
3321                                                                                     RemoteIdentifier,
3322                                                                                     Flags
3323                                         );
3324                                         if (err)
3325                                         {
3326                                                 ++ret->num_error;
3327                                                 invalid = 1;
3328                                         }
3329                                         else {
3330                                                 ++ret->num_room;
3331                                                 if (!IsEmptyStr(ret->recp_room)) {
3332                                                         strcat(ret->recp_room, "|");
3333                                                 }
3334                                                 strcat(ret->recp_room, &this_recp_cooked[5]);
3335                                         }
3336
3337                                         /* Restore room in case something needs it */
3338                                         CC->room = tempQR2;
3339
3340                                 }
3341                                 else if (getuser(&tempUS, this_recp) == 0) {
3342                                         ++ret->num_local;
3343                                         strcpy(this_recp, tempUS.fullname);
3344                                         if (!IsEmptyStr(ret->recp_local)) {
3345                                                 strcat(ret->recp_local, "|");
3346                                         }
3347                                         strcat(ret->recp_local, this_recp);
3348                                 }
3349                                 else if (getuser(&tempUS, this_recp_cooked) == 0) {
3350                                         ++ret->num_local;
3351                                         strcpy(this_recp, tempUS.fullname);
3352                                         if (!IsEmptyStr(ret->recp_local)) {
3353                                                 strcat(ret->recp_local, "|");
3354                                         }
3355                                         strcat(ret->recp_local, this_recp);
3356                                 }
3357                                 else {
3358                                         ++ret->num_error;
3359                                         invalid = 1;
3360                                 }
3361                                 break;
3362                         case MES_INTERNET:
3363                                 /* Yes, you're reading this correctly: if the target
3364                                  * domain points back to the local system or an attached
3365                                  * Citadel directory, the address is invalid.  That's
3366                                  * because if the address were valid, we would have
3367                                  * already translated it to a local address by now.
3368                                  */
3369                                 if (IsDirectory(this_recp, 0)) {
3370                                         ++ret->num_error;
3371                                         invalid = 1;
3372                                 }
3373                                 else {
3374                                         ++ret->num_internet;
3375                                         if (!IsEmptyStr(ret->recp_internet)) {
3376                                                 strcat(ret->recp_internet, "|");
3377                                         }
3378                                         strcat(ret->recp_internet, this_recp);
3379                                 }
3380                                 break;
3381                         case MES_IGNET:
3382                                 ++ret->num_ignet;
3383                                 if (!IsEmptyStr(ret->recp_ignet)) {
3384                                         strcat(ret->recp_ignet, "|");
3385                                 }
3386                                 strcat(ret->recp_ignet, this_recp);
3387                                 break;
3388                         case MES_ERROR:
3389                                 ++ret->num_error;
3390                                 invalid = 1;
3391                                 break;
3392                 }
3393                 if (invalid) {
3394                         if (IsEmptyStr(errmsg)) {
3395                                 snprintf(append, sizeof append, "Invalid recipient: %s", this_recp);
3396                         }
3397                         else {
3398                                 snprintf(append, sizeof append, "%s", errmsg);
3399                         }
3400                         if ( (strlen(ret->errormsg) + strlen(append) + 3) < SIZ) {
3401                                 if (!IsEmptyStr(ret->errormsg)) {
3402                                         strcat(ret->errormsg, "; ");
3403                                 }
3404                                 strcat(ret->errormsg, append);
3405                         }
3406                 }
3407                 else {
3408                         if (IsEmptyStr(ret->display_recp)) {
3409                                 strcpy(append, this_recp);
3410                         }
3411                         else {
3412                                 snprintf(append, sizeof append, ", %s", this_recp);
3413                         }
3414                         if ( (strlen(ret->display_recp)+strlen(append)) < SIZ) {
3415                                 strcat(ret->display_recp, append);
3416                         }
3417                 }
3418         }
3419
3420         if ((ret->num_local + ret->num_internet + ret->num_ignet +
3421            ret->num_room + ret->num_error) == 0) {
3422                 ret->num_error = (-1);
3423                 strcpy(ret->errormsg, "No recipients specified.");
3424         }
3425
3426         CtdlLogPrintf(CTDL_DEBUG, "validate_recipients()\n");
3427         CtdlLogPrintf(CTDL_DEBUG, " local: %d <%s>\n", ret->num_local, ret->recp_local);
3428         CtdlLogPrintf(CTDL_DEBUG, "  room: %d <%s>\n", ret->num_room, ret->recp_room);
3429         CtdlLogPrintf(CTDL_DEBUG, "  inet: %d <%s>\n", ret->num_internet, ret->recp_internet);
3430         CtdlLogPrintf(CTDL_DEBUG, " ignet: %d <%s>\n", ret->num_ignet, ret->recp_ignet);
3431         CtdlLogPrintf(CTDL_DEBUG, " error: %d <%s>\n", ret->num_error, ret->errormsg);
3432
3433         free(recipients);
3434         return(ret);
3435 }
3436
3437
3438 /*
3439  * Destructor for struct recptypes
3440  */
3441 void free_recipients(struct recptypes *valid) {
3442
3443         if (valid == NULL) {
3444                 return;
3445         }
3446
3447         if (valid->recptypes_magic != RECPTYPES_MAGIC) {
3448                 CtdlLogPrintf(CTDL_EMERG, "Attempt to call free_recipients() on some other data type!\n");
3449                 abort();
3450         }
3451
3452         if (valid->errormsg != NULL)            free(valid->errormsg);
3453         if (valid->recp_local != NULL)          free(valid->recp_local);
3454         if (valid->recp_internet != NULL)       free(valid->recp_internet);
3455         if (valid->recp_ignet != NULL)          free(valid->recp_ignet);
3456         if (valid->recp_room != NULL)           free(valid->recp_room);
3457         if (valid->display_recp != NULL)        free(valid->display_recp);
3458         free(valid);
3459 }
3460
3461
3462
3463 /*
3464  * message entry  -  mode 0 (normal)
3465  */
3466 void cmd_ent0(char *entargs)
3467 {
3468         int post = 0;
3469         char recp[SIZ];
3470         char cc[SIZ];
3471         char bcc[SIZ];
3472         char supplied_euid[128];
3473         int anon_flag = 0;
3474         int format_type = 0;
3475         char newusername[256];
3476         char newuseremail[256];
3477         struct CtdlMessage *msg;
3478         int anonymous = 0;
3479         char errmsg[SIZ];
3480         int err = 0;
3481         struct recptypes *valid = NULL;
3482         struct recptypes *valid_to = NULL;
3483         struct recptypes *valid_cc = NULL;
3484         struct recptypes *valid_bcc = NULL;
3485         char subject[SIZ];
3486         int subject_required = 0;
3487         int do_confirm = 0;
3488         long msgnum;
3489         int i, j;
3490         char buf[256];
3491         int newuseremail_ok = 0;
3492
3493         unbuffer_output();
3494
3495         post = extract_int(entargs, 0);
3496         extract_token(recp, entargs, 1, '|', sizeof recp);
3497         anon_flag = extract_int(entargs, 2);
3498         format_type = extract_int(entargs, 3);
3499         extract_token(subject, entargs, 4, '|', sizeof subject);
3500         extract_token(newusername, entargs, 5, '|', sizeof newusername);
3501         do_confirm = extract_int(entargs, 6);
3502         extract_token(cc, entargs, 7, '|', sizeof cc);
3503         extract_token(bcc, entargs, 8, '|', sizeof bcc);
3504         switch(CC->room.QRdefaultview) {
3505                 case VIEW_NOTES:
3506                 case VIEW_WIKI:
3507                         extract_token(supplied_euid, entargs, 9, '|', sizeof supplied_euid);
3508                         break;
3509                 default:
3510                         supplied_euid[0] = 0;
3511                         break;
3512         }
3513         extract_token(newuseremail, entargs, 10, '|', sizeof newuseremail);
3514
3515         /* first check to make sure the request is valid. */
3516
3517         err = CtdlDoIHavePermissionToPostInThisRoom(errmsg, sizeof errmsg, NULL, POST_LOGGED_IN);
3518         if (err)
3519         {
3520                 cprintf("%d %s\n", err, errmsg);
3521                 return;
3522         }
3523
3524         /* Check some other permission type things. */
3525
3526         if (IsEmptyStr(newusername)) {
3527                 strcpy(newusername, CC->user.fullname);
3528         }
3529         if (  (CC->user.axlevel < 6)
3530            && (strcasecmp(newusername, CC->user.fullname))
3531            && (strcasecmp(newusername, CC->cs_inet_fn))
3532         ) {
3533                 cprintf("%d You don't have permission to author messages as '%s'.\n",
3534                         ERROR + HIGHER_ACCESS_REQUIRED,
3535                         newusername
3536                 );
3537                 return;
3538         }
3539
3540
3541         if (IsEmptyStr(newuseremail)) {
3542                 newuseremail_ok = 1;
3543         }
3544
3545         if (!IsEmptyStr(newuseremail)) {
3546                 if (!strcasecmp(newuseremail, CC->cs_inet_email)) {
3547                         newuseremail_ok = 1;
3548                 }
3549                 else if (!IsEmptyStr(CC->cs_inet_other_emails)) {
3550                         j = num_tokens(CC->cs_inet_other_emails, '|');
3551                         for (i=0; i<j; ++i) {
3552                                 extract_token(buf, CC->cs_inet_other_emails, i, '|', sizeof buf);
3553                                 if (!strcasecmp(newuseremail, buf)) {
3554                                         newuseremail_ok = 1;
3555                                 }
3556                         }
3557                 }
3558         }
3559
3560         if (!newuseremail_ok) {
3561                 cprintf("%d You don't have permission to author messages as '%s'.\n",
3562                         ERROR + HIGHER_ACCESS_REQUIRED,
3563                         newuseremail
3564                 );
3565                 return;
3566         }
3567
3568         CC->cs_flags |= CS_POSTING;
3569
3570         /* In mailbox rooms we have to behave a little differently --
3571          * make sure the user has specified at least one recipient.  Then
3572          * validate the recipient(s).  We do this for the Mail> room, as
3573          * well as any room which has the "Mailbox" view set.
3574          */
3575
3576         if (  ( (CC->room.QRflags & QR_MAILBOX) && (!strcasecmp(&CC->room.QRname[11], MAILROOM)) )
3577            || ( (CC->room.QRflags & QR_MAILBOX) && (CC->curr_view == VIEW_MAILBOX) )
3578         ) {
3579                 if (CC->user.axlevel < 2) {
3580                         strcpy(recp, "sysop");
3581                         strcpy(cc, "");
3582                         strcpy(bcc, "");
3583                 }
3584
3585                 valid_to = validate_recipients(recp, NULL, 0);
3586                 if (valid_to->num_error > 0) {
3587                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_to->errormsg);
3588                         free_recipients(valid_to);
3589                         return;
3590                 }
3591
3592                 valid_cc = validate_recipients(cc, NULL, 0);
3593                 if (valid_cc->num_error > 0) {
3594                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_cc->errormsg);
3595                         free_recipients(valid_to);
3596                         free_recipients(valid_cc);
3597                         return;
3598                 }
3599
3600                 valid_bcc = validate_recipients(bcc, NULL, 0);
3601                 if (valid_bcc->num_error > 0) {
3602                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_bcc->errormsg);
3603                         free_recipients(valid_to);
3604                         free_recipients(valid_cc);
3605                         free_recipients(valid_bcc);
3606                         return;
3607                 }
3608
3609                 /* Recipient required, but none were specified */
3610                 if ( (valid_to->num_error < 0) && (valid_cc->num_error < 0) && (valid_bcc->num_error < 0) ) {
3611                         free_recipients(valid_to);
3612                         free_recipients(valid_cc);
3613                         free_recipients(valid_bcc);
3614                         cprintf("%d At least one recipient is required.\n", ERROR + NO_SUCH_USER);
3615                         return;
3616                 }
3617
3618                 if (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0) {
3619                         if (CtdlCheckInternetMailPermission(&CC->user)==0) {
3620                                 cprintf("%d You do not have permission "
3621                                         "to send Internet mail.\n",
3622                                         ERROR + HIGHER_ACCESS_REQUIRED);
3623                                 free_recipients(valid_to);
3624                                 free_recipients(valid_cc);
3625                                 free_recipients(valid_bcc);
3626                                 return;
3627                         }
3628                 }
3629
3630                 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)
3631                    && (CC->user.axlevel < 4) ) {
3632                         cprintf("%d Higher access required for network mail.\n",
3633                                 ERROR + HIGHER_ACCESS_REQUIRED);
3634                         free_recipients(valid_to);
3635                         free_recipients(valid_cc);
3636                         free_recipients(valid_bcc);
3637                         return;
3638                 }
3639
3640                 if ((RESTRICT_INTERNET == 1)
3641                     && (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0)
3642                     && ((CC->user.flags & US_INTERNET) == 0)
3643                     && (!CC->internal_pgm)) {
3644                         cprintf("%d You don't have access to Internet mail.\n",
3645                                 ERROR + HIGHER_ACCESS_REQUIRED);
3646                         free_recipients(valid_to);
3647                         free_recipients(valid_cc);
3648                         free_recipients(valid_bcc);
3649                         return;
3650                 }
3651
3652         }
3653
3654         /* Is this a room which has anonymous-only or anonymous-option? */
3655         anonymous = MES_NORMAL;
3656         if (CC->room.QRflags & QR_ANONONLY) {
3657                 anonymous = MES_ANONONLY;
3658         }
3659         if (CC->room.QRflags & QR_ANONOPT) {
3660                 if (anon_flag == 1) {   /* only if the user requested it */
3661                         anonymous = MES_ANONOPT;
3662                 }
3663         }
3664
3665         if ((CC->room.QRflags & QR_MAILBOX) == 0) {
3666                 recp[0] = 0;
3667         }
3668
3669         /* Recommend to the client that the use of a message subject is
3670          * strongly recommended in this room, if either the SUBJECTREQ flag
3671          * is set, or if there is one or more Internet email recipients.
3672          */
3673         if (CC->room.QRflags2 & QR2_SUBJECTREQ) subject_required = 1;
3674         if (valid_to) if (valid_to->num_internet > 0) subject_required = 1;
3675         if (valid_cc) if (valid_cc->num_internet > 0) subject_required = 1;
3676         if (valid_bcc) if (valid_bcc->num_internet > 0) subject_required = 1;
3677
3678         /* If we're only checking the validity of the request, return
3679          * success without creating the message.
3680          */
3681         if (post == 0) {
3682                 cprintf("%d %s|%d\n", CIT_OK,
3683                         ((valid_to != NULL) ? valid_to->display_recp : ""),
3684                         subject_required);
3685                 free_recipients(valid_to);
3686                 free_recipients(valid_cc);
3687                 free_recipients(valid_bcc);
3688                 return;
3689         }
3690
3691         /* We don't need these anymore because we'll do it differently below */
3692         free_recipients(valid_to);
3693         free_recipients(valid_cc);
3694         free_recipients(valid_bcc);
3695
3696         /* Read in the message from the client. */
3697         if (do_confirm) {
3698                 cprintf("%d send message\n", START_CHAT_MODE);
3699         } else {
3700                 cprintf("%d send message\n", SEND_LISTING);
3701         }
3702
3703         msg = CtdlMakeMessage(&CC->user, recp, cc,
3704                 CC->room.QRname, anonymous, format_type,
3705                 newusername, newuseremail, subject,
3706                 ((!IsEmptyStr(supplied_euid)) ? supplied_euid : NULL),
3707                 NULL);
3708
3709         /* Put together one big recipients struct containing to/cc/bcc all in
3710          * one.  This is for the envelope.
3711          */
3712         char *all_recps = malloc(SIZ * 3);
3713         strcpy(all_recps, recp);
3714         if (!IsEmptyStr(cc)) {
3715                 if (!IsEmptyStr(all_recps)) {
3716                         strcat(all_recps, ",");
3717                 }
3718                 strcat(all_recps, cc);
3719         }
3720         if (!IsEmptyStr(bcc)) {
3721                 if (!IsEmptyStr(all_recps)) {
3722                         strcat(all_recps, ",");
3723                 }
3724                 strcat(all_recps, bcc);
3725         }
3726         if (!IsEmptyStr(all_recps)) {
3727                 valid = validate_recipients(all_recps, NULL, 0);
3728         }
3729         else {
3730                 valid = NULL;
3731         }
3732         free(all_recps);
3733
3734         if (msg != NULL) {
3735                 msgnum = CtdlSubmitMsg(msg, valid, "");
3736
3737                 if (do_confirm) {
3738                         cprintf("%ld\n", msgnum);
3739                         if (msgnum >= 0L) {
3740                                 cprintf("Message accepted.\n");
3741                         }
3742                         else {
3743                                 cprintf("Internal error.\n");
3744                         }
3745                         if (msg->cm_fields['E'] != NULL) {
3746                                 cprintf("%s\n", msg->cm_fields['E']);
3747                         } else {
3748                                 cprintf("\n");
3749                         }
3750                         cprintf("000\n");
3751                 }
3752
3753                 CtdlFreeMessage(msg);
3754         }
3755         if (valid != NULL) {
3756                 free_recipients(valid);
3757         }
3758         return;
3759 }
3760
3761
3762
3763 /*
3764  * API function to delete messages which match a set of criteria
3765  * (returns the actual number of messages deleted)
3766  */
3767 int CtdlDeleteMessages(char *room_name,         /* which room */
3768                         long *dmsgnums,         /* array of msg numbers to be deleted */
3769                         int num_dmsgnums,       /* number of msgs to be deleted, or 0 for "any" */
3770                         char *content_type      /* or "" for any.  regular expressions expected. */
3771 )
3772 {
3773         struct ctdlroom qrbuf;
3774         struct cdbdata *cdbfr;
3775         long *msglist = NULL;
3776         long *dellist = NULL;
3777         int num_msgs = 0;
3778         int i, j;
3779         int num_deleted = 0;
3780         int delete_this;
3781         struct MetaData smi;
3782         regex_t re;
3783         regmatch_t pm;
3784         int need_to_free_re = 0;
3785
3786         if (content_type) if (!IsEmptyStr(content_type)) {
3787                 regcomp(&re, content_type, 0);
3788                 need_to_free_re = 1;
3789         }
3790         CtdlLogPrintf(CTDL_DEBUG, "CtdlDeleteMessages(%s, %d msgs, %s)\n",
3791                 room_name, num_dmsgnums, content_type);
3792
3793         /* get room record, obtaining a lock... */
3794         if (lgetroom(&qrbuf, room_name) != 0) {
3795                 CtdlLogPrintf(CTDL_ERR, "CtdlDeleteMessages(): Room <%s> not found\n",
3796                         room_name);
3797                 if (need_to_free_re) regfree(&re);
3798                 return (0);     /* room not found */
3799         }
3800         cdbfr = cdb_fetch(CDB_MSGLISTS, &qrbuf.QRnumber, sizeof(long));
3801
3802         if (cdbfr != NULL) {
3803                 dellist = malloc(cdbfr->len);
3804                 msglist = (long *) cdbfr->ptr;
3805                 cdbfr->ptr = NULL;      /* CtdlDeleteMessages() now owns this memory */
3806                 num_msgs = cdbfr->len / sizeof(long);
3807                 cdb_free(cdbfr);
3808         }
3809         if (num_msgs > 0) {
3810                 for (i = 0; i < num_msgs; ++i) {
3811                         delete_this = 0x00;
3812
3813                         /* Set/clear a bit for each criterion */
3814
3815                         /* 0 messages in the list or a null list means that we are
3816                          * interested in deleting any messages which meet the other criteria.
3817                          */
3818                         if ((num_dmsgnums == 0) || (dmsgnums == NULL)) {
3819                                 delete_this |= 0x01;
3820                         }
3821                         else {
3822                                 for (j=0; j<num_dmsgnums; ++j) {
3823                                         if (msglist[i] == dmsgnums[j]) {
3824                                                 delete_this |= 0x01;
3825                                         }
3826                                 }
3827                         }
3828
3829                         if (IsEmptyStr(content_type)) {
3830                                 delete_this |= 0x02;
3831                         } else {
3832                                 GetMetaData(&smi, msglist[i]);
3833                                 if (regexec(&re, smi.meta_content_type, 1, &pm, 0) == 0) {
3834                                         delete_this |= 0x02;
3835                                 }
3836                         }
3837
3838                         /* Delete message only if all bits are set */
3839                         if (delete_this == 0x03) {
3840                                 dellist[num_deleted++] = msglist[i];
3841                                 msglist[i] = 0L;
3842                         }
3843                 }
3844
3845                 num_msgs = sort_msglist(msglist, num_msgs);
3846                 cdb_store(CDB_MSGLISTS, &qrbuf.QRnumber, (int)sizeof(long),
3847                           msglist, (int)(num_msgs * sizeof(long)));
3848
3849                 qrbuf.QRhighest = msglist[num_msgs - 1];
3850         }
3851         lputroom(&qrbuf);
3852
3853         /* Go through the messages we pulled out of the index, and decrement
3854          * their reference counts by 1.  If this is the only room the message
3855          * was in, the reference count will reach zero and the message will
3856          * automatically be deleted from the database.  We do this in a
3857          * separate pass because there might be plug-in hooks getting called,
3858          * and we don't want that happening during an S_ROOMS critical
3859          * section.
3860          */
3861         if (num_deleted) for (i=0; i<num_deleted; ++i) {
3862                 PerformDeleteHooks(qrbuf.QRname, dellist[i]);
3863                 AdjRefCount(dellist[i], -1);
3864         }
3865
3866         /* Now free the memory we used, and go away. */
3867         if (msglist != NULL) free(msglist);
3868         if (dellist != NULL) free(dellist);
3869         CtdlLogPrintf(CTDL_DEBUG, "%d message(s) deleted.\n", num_deleted);
3870         if (need_to_free_re) regfree(&re);
3871         return (num_deleted);
3872 }
3873
3874
3875
3876 /*
3877  * Check whether the current user has permission to delete messages from
3878  * the current room (returns 1 for yes, 0 for no)
3879  */
3880 int CtdlDoIHavePermissionToDeleteMessagesFromThisRoom(void) {
3881         int ra;
3882         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
3883         if (ra & UA_DELETEALLOWED) return(1);
3884         return(0);
3885 }
3886
3887
3888
3889
3890 /*
3891  * Delete message from current room
3892  */
3893 void cmd_dele(char *args)
3894 {
3895         int num_deleted;
3896         int i;
3897         char msgset[SIZ];
3898         char msgtok[32];
3899         long *msgs;
3900         int num_msgs = 0;
3901
3902         extract_token(msgset, args, 0, '|', sizeof msgset);
3903         num_msgs = num_tokens(msgset, ',');
3904         if (num_msgs < 1) {
3905                 cprintf("%d Nothing to do.\n", CIT_OK);
3906                 return;
3907         }
3908
3909         if (CtdlDoIHavePermissionToDeleteMessagesFromThisRoom() == 0) {
3910                 cprintf("%d Higher access required.\n",
3911                         ERROR + HIGHER_ACCESS_REQUIRED);
3912                 return;
3913         }
3914
3915         /*
3916          * Build our message set to be moved/copied
3917          */
3918         msgs = malloc(num_msgs * sizeof(long));
3919         for (i=0; i<num_msgs; ++i) {
3920                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
3921                 msgs[i] = atol(msgtok);
3922         }
3923
3924         num_deleted = CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
3925         free(msgs);
3926
3927         if (num_deleted) {
3928                 cprintf("%d %d message%s deleted.\n", CIT_OK,
3929                         num_deleted, ((num_deleted != 1) ? "s" : ""));
3930         } else {
3931                 cprintf("%d Message not found.\n", ERROR + MESSAGE_NOT_FOUND);
3932         }
3933 }
3934
3935
3936 /*
3937  * Back end API function for moves and deletes (multiple messages)
3938  */
3939 int CtdlCopyMsgsToRoom(long *msgnums, int num_msgs, char *dest) {
3940         int err;
3941
3942         err = CtdlSaveMsgPointersInRoom(dest, msgnums, num_msgs, 1, NULL);
3943         if (err != 0) return(err);
3944
3945         return(0);
3946 }
3947
3948
3949
3950
3951 /*
3952  * move or copy a message to another room
3953  */
3954 void cmd_move(char *args)
3955 {
3956         char msgset[SIZ];
3957         char msgtok[32];
3958         long *msgs;
3959         int num_msgs = 0;
3960
3961         char targ[ROOMNAMELEN];
3962         struct ctdlroom qtemp;
3963         int err;
3964         int is_copy = 0;
3965         int ra;
3966         int permit = 0;
3967         int i;
3968
3969         extract_token(msgset, args, 0, '|', sizeof msgset);
3970         num_msgs = num_tokens(msgset, ',');
3971         if (num_msgs < 1) {
3972                 cprintf("%d Nothing to do.\n", CIT_OK);
3973                 return;
3974         }
3975
3976         extract_token(targ, args, 1, '|', sizeof targ);
3977         convert_room_name_macros(targ, sizeof targ);
3978         targ[ROOMNAMELEN - 1] = 0;
3979         is_copy = extract_int(args, 2);
3980
3981         if (getroom(&qtemp, targ) != 0) {
3982                 cprintf("%d '%s' does not exist.\n",
3983                         ERROR + ROOM_NOT_FOUND, targ);
3984                 return;
3985         }
3986
3987         getuser(&CC->user, CC->curr_user);
3988         CtdlRoomAccess(&qtemp, &CC->user, &ra, NULL);
3989
3990         /* Check for permission to perform this operation.
3991          * Remember: "CC->room" is source, "qtemp" is target.
3992          */
3993         permit = 0;
3994
3995         /* Aides can move/copy */
3996         if (CC->user.axlevel >= 6) permit = 1;
3997
3998         /* Room aides can move/copy */
3999         if (CC->user.usernum == CC->room.QRroomaide) permit = 1;
4000
4001         /* Permit move/copy from personal rooms */
4002         if ((CC->room.QRflags & QR_MAILBOX)
4003            && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
4004
4005         /* Permit only copy from public to personal room */
4006         if ( (is_copy)
4007            && (!(CC->room.QRflags & QR_MAILBOX))
4008            && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
4009
4010         /* Permit message removal from collaborative delete rooms */
4011         if (CC->room.QRflags2 & QR2_COLLABDEL) permit = 1;
4012
4013         /* Users allowed to post into the target room may move into it too. */
4014         if ((CC->room.QRflags & QR_MAILBOX) &&
4015             (qtemp.QRflags & UA_POSTALLOWED))  permit = 1;
4016
4017         /* User must have access to target room */
4018         if (!(ra & UA_KNOWN))  permit = 0;
4019
4020         if (!permit) {
4021                 cprintf("%d Higher access required.\n",
4022                         ERROR + HIGHER_ACCESS_REQUIRED);
4023                 return;
4024         }
4025
4026         /*
4027          * Build our message set to be moved/copied
4028          */
4029         msgs = malloc(num_msgs * sizeof(long));
4030         for (i=0; i<num_msgs; ++i) {
4031                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4032                 msgs[i] = atol(msgtok);
4033         }
4034
4035         /*
4036          * Do the copy
4037          */
4038         err = CtdlCopyMsgsToRoom(msgs, num_msgs, targ);
4039         if (err != 0) {
4040                 cprintf("%d Cannot store message(s) in %s: error %d\n",
4041                         err, targ, err);
4042                 free(msgs);
4043                 return;
4044         }
4045
4046         /* Now delete the message from the source room,
4047          * if this is a 'move' rather than a 'copy' operation.
4048          */
4049         if (is_copy == 0) {
4050                 CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4051         }
4052         free(msgs);
4053
4054         cprintf("%d Message(s) %s.\n", CIT_OK, (is_copy ? "copied" : "moved") );
4055 }
4056
4057
4058
4059 /*
4060  * GetMetaData()  -  Get the supplementary record for a message
4061  */
4062 void GetMetaData(struct MetaData *smibuf, long msgnum)
4063 {
4064
4065         struct cdbdata *cdbsmi;
4066         long TheIndex;
4067
4068         memset(smibuf, 0, sizeof(struct MetaData));
4069         smibuf->meta_msgnum = msgnum;
4070         smibuf->meta_refcount = 1;      /* Default reference count is 1 */
4071
4072         /* Use the negative of the message number for its supp record index */
4073         TheIndex = (0L - msgnum);
4074
4075         cdbsmi = cdb_fetch(CDB_MSGMAIN, &TheIndex, sizeof(long));
4076         if (cdbsmi == NULL) {
4077                 return;         /* record not found; go with defaults */
4078         }
4079         memcpy(smibuf, cdbsmi->ptr,
4080                ((cdbsmi->len > sizeof(struct MetaData)) ?
4081                 sizeof(struct MetaData) : cdbsmi->len));
4082         cdb_free(cdbsmi);
4083         return;
4084 }
4085
4086
4087 /*
4088  * PutMetaData()  -  (re)write supplementary record for a message
4089  */
4090 void PutMetaData(struct MetaData *smibuf)
4091 {
4092         long TheIndex;
4093
4094         /* Use the negative of the message number for the metadata db index */
4095         TheIndex = (0L - smibuf->meta_msgnum);
4096
4097         cdb_store(CDB_MSGMAIN,
4098                   &TheIndex, (int)sizeof(long),
4099                   smibuf, (int)sizeof(struct MetaData));
4100
4101 }
4102
4103 /*
4104  * AdjRefCount  -  submit an adjustment to the reference count for a message.
4105  *                 (These are just queued -- we actually process them later.)
4106  */
4107 void AdjRefCount(long msgnum, int incr)
4108 {
4109         struct arcq new_arcq;
4110
4111         begin_critical_section(S_SUPPMSGMAIN);
4112         if (arcfp == NULL) {
4113                 arcfp = fopen(file_arcq, "ab+");
4114         }
4115         end_critical_section(S_SUPPMSGMAIN);
4116
4117         /* msgnum < 0 means that we're trying to close the file */
4118         if (msgnum < 0) {
4119                 CtdlLogPrintf(CTDL_DEBUG, "Closing the AdjRefCount queue file\n");
4120                 begin_critical_section(S_SUPPMSGMAIN);
4121                 if (arcfp != NULL) {
4122                         fclose(arcfp);
4123                         arcfp = NULL;
4124                 }
4125                 end_critical_section(S_SUPPMSGMAIN);
4126                 return;
4127         }
4128
4129         /*
4130          * If we can't open the queue, perform the operation synchronously.
4131          */
4132         if (arcfp == NULL) {
4133                 TDAP_AdjRefCount(msgnum, incr);
4134                 return;
4135         }
4136
4137         new_arcq.arcq_msgnum = msgnum;
4138         new_arcq.arcq_delta = incr;
4139         fwrite(&new_arcq, sizeof(struct arcq), 1, arcfp);
4140         fflush(arcfp);
4141
4142         return;
4143 }
4144
4145
4146 /*
4147  * TDAP_ProcessAdjRefCountQueue()
4148  *
4149  * Process the queue of message count adjustments that was created by calls
4150  * to AdjRefCount() ... by reading the queue and calling TDAP_AdjRefCount()
4151  * for each one.  This should be an "off hours" operation.
4152  */
4153 int TDAP_ProcessAdjRefCountQueue(void)
4154 {
4155         char file_arcq_temp[PATH_MAX];
4156         int r;
4157         FILE *fp;
4158         struct arcq arcq_rec;
4159         int num_records_processed = 0;
4160
4161         snprintf(file_arcq_temp, sizeof file_arcq_temp, "%s2", file_arcq);
4162
4163         begin_critical_section(S_SUPPMSGMAIN);
4164         if (arcfp != NULL) {
4165                 fclose(arcfp);
4166                 arcfp = NULL;
4167         }
4168
4169         r = link(file_arcq, file_arcq_temp);
4170         if (r != 0) {
4171                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4172                 end_critical_section(S_SUPPMSGMAIN);
4173                 return(num_records_processed);
4174         }
4175
4176         unlink(file_arcq);
4177         end_critical_section(S_SUPPMSGMAIN);
4178
4179         fp = fopen(file_arcq_temp, "rb");
4180         if (fp == NULL) {
4181                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4182                 return(num_records_processed);
4183         }
4184
4185         while (fread(&arcq_rec, sizeof(struct arcq), 1, fp) == 1) {
4186                 TDAP_AdjRefCount(arcq_rec.arcq_msgnum, arcq_rec.arcq_delta);
4187                 ++num_records_processed;
4188         }
4189
4190         fclose(fp);
4191         r = unlink(file_arcq_temp);
4192         if (r != 0) {
4193                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4194         }
4195
4196         return(num_records_processed);
4197 }
4198
4199
4200
4201 /*
4202  * TDAP_AdjRefCount  -  adjust the reference count for a message.
4203  *                      This one does it "for real" because it's called by
4204  *                      the autopurger function that processes the queue
4205  *                      created by AdjRefCount().   If a message's reference
4206  *                      count becomes zero, we also delete the message from
4207  *                      disk and de-index it.
4208  */
4209 void TDAP_AdjRefCount(long msgnum, int incr)
4210 {
4211
4212         struct MetaData smi;
4213         long delnum;
4214
4215         /* This is a *tight* critical section; please keep it that way, as
4216          * it may get called while nested in other critical sections.
4217          * Complicating this any further will surely cause deadlock!
4218          */
4219         begin_critical_section(S_SUPPMSGMAIN);
4220         GetMetaData(&smi, msgnum);
4221         smi.meta_refcount += incr;
4222         PutMetaData(&smi);
4223         end_critical_section(S_SUPPMSGMAIN);
4224         CtdlLogPrintf(CTDL_DEBUG, "msg %ld ref count delta %d, is now %d\n",
4225                 msgnum, incr, smi.meta_refcount);
4226
4227         /* If the reference count is now zero, delete the message
4228          * (and its supplementary record as well).
4229          */
4230         if (smi.meta_refcount == 0) {
4231                 CtdlLogPrintf(CTDL_DEBUG, "Deleting message <%ld>\n", msgnum);
4232
4233                 /* Call delete hooks with NULL room to show it has gone altogether */
4234                 PerformDeleteHooks(NULL, msgnum);
4235
4236                 /* Remove from message base */
4237                 delnum = msgnum;
4238                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
4239                 cdb_delete(CDB_BIGMSGS, &delnum, (int)sizeof(long));
4240
4241                 /* Remove metadata record */
4242                 delnum = (0L - msgnum);
4243                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
4244         }
4245
4246 }
4247
4248 /*
4249  * Write a generic object to this room
4250  *
4251  * Note: this could be much more efficient.  Right now we use two temporary
4252  * files, and still pull the message into memory as with all others.
4253  */
4254 void CtdlWriteObject(char *req_room,            /* Room to stuff it in */
4255                         char *content_type,     /* MIME type of this object */
4256                         char *tempfilename,     /* Where to fetch it from */
4257                         struct ctdluser *is_mailbox,    /* Mailbox room? */
4258                         int is_binary,          /* Is encoding necessary? */
4259                         int is_unique,          /* Del others of this type? */
4260                         unsigned int flags      /* Internal save flags */
4261                         )
4262 {
4263
4264         FILE *fp;
4265         struct ctdlroom qrbuf;
4266         char roomname[ROOMNAMELEN];
4267         struct CtdlMessage *msg;
4268
4269         char *raw_message = NULL;
4270         char *encoded_message = NULL;
4271         off_t raw_length = 0;
4272
4273         if (is_mailbox != NULL) {
4274                 MailboxName(roomname, sizeof roomname, is_mailbox, req_room);
4275         }
4276         else {
4277                 safestrncpy(roomname, req_room, sizeof(roomname));
4278         }
4279
4280         fp = fopen(tempfilename, "rb");
4281         if (fp == NULL) {
4282                 CtdlLogPrintf(CTDL_CRIT, "Cannot open %s: %s\n",
4283                         tempfilename, strerror(errno));
4284                 return;
4285         }
4286         fseek(fp, 0L, SEEK_END);
4287         raw_length = ftell(fp);
4288         rewind(fp);
4289         CtdlLogPrintf(CTDL_DEBUG, "Raw length is %ld\n", (long)raw_length);
4290
4291         raw_message = malloc((size_t)raw_length + 2);
4292         fread(raw_message, (size_t)raw_length, 1, fp);
4293         fclose(fp);
4294
4295         if (is_binary) {
4296                 encoded_message = malloc((size_t)
4297                         (((raw_length * 134) / 100) + 4096 ) );
4298         }
4299         else {
4300                 encoded_message = malloc((size_t)(raw_length + 4096));
4301         }
4302
4303         sprintf(encoded_message, "Content-type: %s\n", content_type);
4304
4305         if (is_binary) {
4306                 sprintf(&encoded_message[strlen(encoded_message)],
4307                         "Content-transfer-encoding: base64\n\n"
4308                 );
4309         }
4310         else {
4311                 sprintf(&encoded_message[strlen(encoded_message)],
4312                         "Content-transfer-encoding: 7bit\n\n"
4313                 );
4314         }
4315
4316         if (is_binary) {
4317                 CtdlEncodeBase64(
4318                         &encoded_message[strlen(encoded_message)],
4319                         raw_message,
4320                         (int)raw_length,
4321                         0
4322                 );
4323         }
4324         else {
4325                 raw_message[raw_length] = 0;
4326                 memcpy(
4327                         &encoded_message[strlen(encoded_message)],
4328                         raw_message,
4329                         (int)(raw_length+1)
4330                 );
4331         }
4332
4333         free(raw_message);
4334
4335         CtdlLogPrintf(CTDL_DEBUG, "Allocating\n");
4336         msg = malloc(sizeof(struct CtdlMessage));
4337         memset(msg, 0, sizeof(struct CtdlMessage));
4338         msg->cm_magic = CTDLMESSAGE_MAGIC;
4339         msg->cm_anon_type = MES_NORMAL;
4340         msg->cm_format_type = 4;
4341         msg->cm_fields['A'] = strdup(CC->user.fullname);
4342         msg->cm_fields['O'] = strdup(req_room);
4343         msg->cm_fields['N'] = strdup(config.c_nodename);
4344         msg->cm_fields['H'] = strdup(config.c_humannode);
4345         msg->cm_flags = flags;
4346
4347         msg->cm_fields['M'] = encoded_message;
4348
4349         /* Create the requested room if we have to. */
4350         if (getroom(&qrbuf, roomname) != 0) {
4351                 create_room(roomname,
4352                         ( (is_mailbox != NULL) ? 5 : 3 ),
4353                         "", 0, 1, 0, VIEW_BBS);
4354         }
4355         /* If the caller specified this object as unique, delete all
4356          * other objects of this type that are currently in the room.
4357          */
4358         if (is_unique) {
4359                 CtdlLogPrintf(CTDL_DEBUG, "Deleted %d other msgs of this type\n",
4360                         CtdlDeleteMessages(roomname, NULL, 0, content_type)
4361                 );
4362         }
4363         /* Now write the data */
4364         CtdlSubmitMsg(msg, NULL, roomname);
4365         CtdlFreeMessage(msg);
4366 }
4367
4368
4369
4370
4371
4372
4373 void CtdlGetSysConfigBackend(long msgnum, void *userdata) {
4374         config_msgnum = msgnum;
4375 }
4376
4377
4378 char *CtdlGetSysConfig(char *sysconfname) {
4379         char hold_rm[ROOMNAMELEN];
4380         long msgnum;
4381         char *conf;
4382         struct CtdlMessage *msg;
4383         char buf[SIZ];
4384
4385         strcpy(hold_rm, CC->room.QRname);
4386         if (getroom(&CC->room, SYSCONFIGROOM) != 0) {
4387                 getroom(&CC->room, hold_rm);
4388                 return NULL;
4389         }
4390
4391
4392         /* We want the last (and probably only) config in this room */
4393         begin_critical_section(S_CONFIG);
4394         config_msgnum = (-1L);
4395         CtdlForEachMessage(MSGS_LAST, 1, NULL, sysconfname, NULL,
4396                 CtdlGetSysConfigBackend, NULL);
4397         msgnum = config_msgnum;
4398         end_critical_section(S_CONFIG);
4399
4400         if (msgnum < 0L) {
4401                 conf = NULL;
4402         }
4403         else {
4404                 msg = CtdlFetchMessage(msgnum, 1);
4405                 if (msg != NULL) {
4406                         conf = strdup(msg->cm_fields['M']);
4407                         CtdlFreeMessage(msg);
4408                 }
4409                 else {
4410                         conf = NULL;
4411                 }
4412         }
4413
4414         getroom(&CC->room, hold_rm);
4415
4416         if (conf != NULL) do {
4417                 extract_token(buf, conf, 0, '\n', sizeof buf);
4418                 strcpy(conf, &conf[strlen(buf)+1]);
4419         } while ( (!IsEmptyStr(conf)) && (!IsEmptyStr(buf)) );
4420
4421         return(conf);
4422 }
4423
4424 void CtdlPutSysConfig(char *sysconfname, char *sysconfdata) {
4425         char temp[PATH_MAX];
4426         FILE *fp;
4427
4428         CtdlMakeTempFileName(temp, sizeof temp);
4429
4430         fp = fopen(temp, "w");
4431         if (fp == NULL) return;
4432         fprintf(fp, "%s", sysconfdata);
4433         fclose(fp);
4434
4435         /* this handy API function does all the work for us */
4436         CtdlWriteObject(SYSCONFIGROOM, sysconfname, temp, NULL, 0, 1, 0);
4437         unlink(temp);
4438 }
4439
4440
4441 /*
4442  * Determine whether a given Internet address belongs to the current user
4443  */
4444 int CtdlIsMe(char *addr, int addr_buf_len)
4445 {
4446         struct recptypes *recp;
4447         int i;
4448
4449         recp = validate_recipients(addr, NULL, 0);
4450         if (recp == NULL) return(0);
4451
4452         if (recp->num_local == 0) {
4453                 free_recipients(recp);
4454                 return(0);
4455         }
4456
4457         for (i=0; i<recp->num_local; ++i) {
4458                 extract_token(addr, recp->recp_local, i, '|', addr_buf_len);
4459                 if (!strcasecmp(addr, CC->user.fullname)) {
4460                         free_recipients(recp);
4461                         return(1);
4462                 }
4463         }
4464
4465         free_recipients(recp);
4466         return(0);
4467 }
4468
4469
4470 /*
4471  * Citadel protocol command to do the same
4472  */
4473 void cmd_isme(char *argbuf) {
4474         char addr[256];
4475
4476         if (CtdlAccessCheck(ac_logged_in)) return;
4477         extract_token(addr, argbuf, 0, '|', sizeof addr);
4478
4479         if (CtdlIsMe(addr, sizeof addr)) {
4480                 cprintf("%d %s\n", CIT_OK, addr);
4481         }
4482         else {
4483                 cprintf("%d Not you.\n", ERROR + ILLEGAL_VALUE);
4484         }
4485
4486 }