citadel/config.c

   1 /*
   2  * Read and write the citadel.config file
   3  *
   4  * Copyright (c) 1987-2016 by the citadel.org team
   5  *
   6  * This program is open source software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 3.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include "sysdep.h"
  16 #include <stdio.h>
  17 #include <sys/utsname.h>
  18 #include <libcitadel.h>
  19 #include <assert.h>
  20 #include "config.h"
  21 #include "ctdl_module.h"
  22
  23 long config_msgnum = 0;
  24 HashList *ctdlconfig = NULL;    // new configuration
  25
  26
  27 void config_warn_if_port_unset(char *key, int default_port)                     \
  28 {
  29         int p = CtdlGetConfigInt(key);
  30         if ((p < -1) || (p == 0) || (p > UINT16_MAX))
  31         {
  32                 syslog(LOG_EMERG,
  33                         "configuration setting %s is not -1 (disabled) or a valid TCP-Port - check your config! Default setting is: %d",
  34                         key, default_port
  35                 );
  36         }
  37 }
  38
  39
  40 void config_warn_if_empty(char *key)
  41 {
  42         if (IsEmptyStr(CtdlGetConfigStr(key)))
  43         {
  44                 syslog(LOG_EMERG, "configuration setting %s is empty, but must not - check your config!", key);
  45         }
  46 }
  47
  48
  49
  50 void validate_config(void) {
  51
  52         /*
  53          * these shouldn't be empty
  54          */
  55         config_warn_if_empty("c_fqdn");
  56         config_warn_if_empty("c_baseroom");
  57         config_warn_if_empty("c_aideroom");
  58         config_warn_if_empty("c_twitroom");
  59         config_warn_if_empty("c_nodename");
  60         config_warn_if_empty("c_default_cal_zone");
  61
  62         /*
  63          * Sanity check for port bindings
  64          */
  65         config_warn_if_port_unset("c_smtp_port", 25);
  66         config_warn_if_port_unset("c_pop3_port", 110);
  67         config_warn_if_port_unset("c_imap_port", 143);
  68         config_warn_if_port_unset("c_msa_port", 587);
  69         config_warn_if_port_unset("c_port_number", 504);
  70         config_warn_if_port_unset("c_smtps_port", 465);
  71         config_warn_if_port_unset("c_pop3s_port", 995);
  72         config_warn_if_port_unset("c_imaps_port", 993);
  73         config_warn_if_port_unset("c_pftcpdict_port", -1);
  74         config_warn_if_port_unset("c_managesieve_port", 2020);
  75         config_warn_if_port_unset("c_xmpp_c2s_port", 5222);
  76         config_warn_if_port_unset("c_xmpp_s2s_port", 5269);
  77         config_warn_if_port_unset("c_nntp_port", 119);
  78         config_warn_if_port_unset("c_nntps_port", 563);
  79
  80         if (getpwuid(ctdluid) == NULL) {
  81                 syslog(LOG_EMERG, "The UID (%d) citadel is configured to use is not defined in your system (/etc/passwd?)!", ctdluid);
  82         }
  83
  84 }
  85
  86 /*
  87  * Put some sane default values into our configuration.  Some will be overridden when we run setup.
  88  */
  89 void brand_new_installation_set_defaults(void) {
  90
  91         struct utsname my_utsname;
  92         struct hostent *he;
  93         char detected_hostname[256];
  94
  95         /* Determine our host name, in case we need to use it as a default */
  96         uname(&my_utsname);
  97
  98         /* set some sample/default values in place of blanks... */
  99         extract_token(detected_hostname, my_utsname.nodename, 0, '.', sizeof detected_hostname);
 100         CtdlSetConfigStr("c_nodename", detected_hostname);
 101
 102         if ((he = gethostbyname(my_utsname.nodename)) != NULL) {
 103                 CtdlSetConfigStr("c_fqdn", he->h_name);
 104         }
 105         else {
 106                 CtdlSetConfigStr("c_fqdn", my_utsname.nodename);
 107         }
 108
 109         CtdlSetConfigStr("c_humannode",         "Citadel Server");
 110         CtdlSetConfigInt("c_initax",            4);
 111         CtdlSetConfigStr("c_moreprompt",        "<more>");
 112         CtdlSetConfigStr("c_twitroom",          "Trashcan");
 113         CtdlSetConfigStr("c_baseroom",          BASEROOM);
 114         CtdlSetConfigStr("c_aideroom",          "Aide");
 115         CtdlSetConfigInt("c_sleeping",          900);
 116
 117         if (CtdlGetConfigInt("c_createax") == 0) {
 118                 CtdlSetConfigInt("c_createax", 3);
 119         }
 120
 121         /*
 122          * Default port numbers for various services
 123          */
 124         CtdlSetConfigInt("c_port_number",       504);
 125         CtdlSetConfigInt("c_smtp_port",         25);
 126         CtdlSetConfigInt("c_pop3_port",         110);
 127         CtdlSetConfigInt("c_imap_port",         143);
 128         CtdlSetConfigInt("c_msa_port",          587);
 129         CtdlSetConfigInt("c_smtps_port",        465);
 130         CtdlSetConfigInt("c_pop3s_port",        995);
 131         CtdlSetConfigInt("c_imaps_port",        993);
 132         CtdlSetConfigInt("c_pftcpdict_port",    -1);
 133         CtdlSetConfigInt("c_managesieve_port",  2020);
 134         CtdlSetConfigInt("c_xmpp_c2s_port",     5222);
 135         CtdlSetConfigInt("c_xmpp_s2s_port",     5269);
 136         CtdlSetConfigInt("c_nntp_port",         119);
 137         CtdlSetConfigInt("c_nntps_port",        563);
 138
 139         /*
 140          * Prevent the "new installation, set defaults" behavior from occurring again
 141          */
 142         CtdlSetConfigLong("c_config_created_or_migrated", (long)time(NULL));
 143 }
 144
 145
 146
 147 /*
 148  * Migrate a supplied legacy configuration to the new in-db format.
 149  * No individual site should ever have to do this more than once.
 150  */
 151 void migrate_legacy_config(struct legacy_config *lconfig)
 152 {
 153         CtdlSetConfigStr(       "c_nodename"            ,       lconfig->c_nodename             );
 154         CtdlSetConfigStr(       "c_fqdn"                ,       lconfig->c_fqdn                 );
 155         CtdlSetConfigStr(       "c_humannode"           ,       lconfig->c_humannode            );
 156         CtdlSetConfigInt(       "c_creataide"           ,       lconfig->c_creataide            );
 157         CtdlSetConfigInt(       "c_sleeping"            ,       lconfig->c_sleeping             );
 158         CtdlSetConfigInt(       "c_initax"              ,       lconfig->c_initax               );
 159         CtdlSetConfigInt(       "c_regiscall"           ,       lconfig->c_regiscall            );
 160         CtdlSetConfigInt(       "c_twitdetect"          ,       lconfig->c_twitdetect           );
 161         CtdlSetConfigStr(       "c_twitroom"            ,       lconfig->c_twitroom             );
 162         CtdlSetConfigStr(       "c_moreprompt"          ,       lconfig->c_moreprompt           );
 163         CtdlSetConfigInt(       "c_restrict"            ,       lconfig->c_restrict             );
 164         CtdlSetConfigStr(       "c_site_location"       ,       lconfig->c_site_location        );
 165         CtdlSetConfigStr(       "c_sysadm"              ,       lconfig->c_sysadm               );
 166         CtdlSetConfigInt(       "c_maxsessions"         ,       lconfig->c_maxsessions          );
 167         CtdlSetConfigStr(       "c_ip_addr"             ,       lconfig->c_ip_addr              );
 168         CtdlSetConfigInt(       "c_port_number"         ,       lconfig->c_port_number          );
 169         CtdlSetConfigInt(       "c_ep_mode"             ,       lconfig->c_ep.expire_mode       );
 170         CtdlSetConfigInt(       "c_ep_value"            ,       lconfig->c_ep.expire_value      );
 171         CtdlSetConfigInt(       "c_userpurge"           ,       lconfig->c_userpurge            );
 172         CtdlSetConfigInt(       "c_roompurge"           ,       lconfig->c_roompurge            );
 173         CtdlSetConfigStr(       "c_logpages"            ,       lconfig->c_logpages             );
 174         CtdlSetConfigInt(       "c_createax"            ,       lconfig->c_createax             );
 175         CtdlSetConfigLong(      "c_maxmsglen"           ,       lconfig->c_maxmsglen            );
 176         CtdlSetConfigInt(       "c_min_workers"         ,       lconfig->c_min_workers          );
 177         CtdlSetConfigInt(       "c_max_workers"         ,       lconfig->c_max_workers          );
 178         CtdlSetConfigInt(       "c_pop3_port"           ,       lconfig->c_pop3_port            );
 179         CtdlSetConfigInt(       "c_smtp_port"           ,       lconfig->c_smtp_port            );
 180         CtdlSetConfigInt(       "c_rfc822_strict_from"  ,       lconfig->c_rfc822_strict_from   );
 181         CtdlSetConfigInt(       "c_aide_zap"            ,       lconfig->c_aide_zap             );
 182         CtdlSetConfigInt(       "c_imap_port"           ,       lconfig->c_imap_port            );
 183         CtdlSetConfigLong(      "c_net_freq"            ,       lconfig->c_net_freq             );
 184         CtdlSetConfigInt(       "c_disable_newu"        ,       lconfig->c_disable_newu         );
 185         CtdlSetConfigInt(       "c_enable_fulltext"     ,       lconfig->c_enable_fulltext      );
 186         CtdlSetConfigStr(       "c_baseroom"            ,       lconfig->c_baseroom             );
 187         CtdlSetConfigStr(       "c_aideroom"            ,       lconfig->c_aideroom             );
 188         CtdlSetConfigInt(       "c_purge_hour"          ,       lconfig->c_purge_hour           );
 189         CtdlSetConfigInt(       "c_mbxep_mode"          ,       lconfig->c_mbxep.expire_mode    );
 190         CtdlSetConfigInt(       "c_mbxep_value"         ,       lconfig->c_mbxep.expire_value   );
 191         CtdlSetConfigStr(       "c_ldap_host"           ,       lconfig->c_ldap_host            );
 192         CtdlSetConfigInt(       "c_ldap_port"           ,       lconfig->c_ldap_port            );
 193         CtdlSetConfigStr(       "c_ldap_base_dn"        ,       lconfig->c_ldap_base_dn         );
 194         CtdlSetConfigStr(       "c_ldap_bind_dn"        ,       lconfig->c_ldap_bind_dn         );
 195         CtdlSetConfigStr(       "c_ldap_bind_pw"        ,       lconfig->c_ldap_bind_pw         );
 196         CtdlSetConfigInt(       "c_msa_port"            ,       lconfig->c_msa_port             );
 197         CtdlSetConfigInt(       "c_imaps_port"          ,       lconfig->c_imaps_port           );
 198         CtdlSetConfigInt(       "c_pop3s_port"          ,       lconfig->c_pop3s_port           );
 199         CtdlSetConfigInt(       "c_smtps_port"          ,       lconfig->c_smtps_port           );
 200         CtdlSetConfigInt(       "c_auto_cull"           ,       lconfig->c_auto_cull            );
 201         CtdlSetConfigInt(       "c_allow_spoofing"      ,       lconfig->c_allow_spoofing       );
 202         CtdlSetConfigInt(       "c_journal_email"       ,       lconfig->c_journal_email        );
 203         CtdlSetConfigInt(       "c_journal_pubmsgs"     ,       lconfig->c_journal_pubmsgs      );
 204         CtdlSetConfigStr(       "c_journal_dest"        ,       lconfig->c_journal_dest         );
 205         CtdlSetConfigStr(       "c_default_cal_zone"    ,       lconfig->c_default_cal_zone     );
 206         CtdlSetConfigInt(       "c_pftcpdict_port"      ,       lconfig->c_pftcpdict_port       );
 207         CtdlSetConfigInt(       "c_managesieve_port"    ,       lconfig->c_managesieve_port     );
 208         CtdlSetConfigInt(       "c_auth_mode"           ,       lconfig->c_auth_mode            );
 209         CtdlSetConfigStr(       "c_funambol_host"       ,       lconfig->c_funambol_host        );
 210         CtdlSetConfigInt(       "c_funambol_port"       ,       lconfig->c_funambol_port        );
 211         CtdlSetConfigStr(       "c_funambol_source"     ,       lconfig->c_funambol_source      );
 212         CtdlSetConfigStr(       "c_funambol_auth"       ,       lconfig->c_funambol_auth        );
 213         CtdlSetConfigInt(       "c_rbl_at_greeting"     ,       lconfig->c_rbl_at_greeting      );
 214         CtdlSetConfigStr(       "c_master_user"         ,       lconfig->c_master_user          );
 215         CtdlSetConfigStr(       "c_master_pass"         ,       lconfig->c_master_pass          );
 216         CtdlSetConfigStr(       "c_pager_program"       ,       lconfig->c_pager_program        );
 217         CtdlSetConfigInt(       "c_imap_keep_from"      ,       lconfig->c_imap_keep_from       );
 218         CtdlSetConfigInt(       "c_xmpp_c2s_port"       ,       lconfig->c_xmpp_c2s_port        );
 219         CtdlSetConfigInt(       "c_xmpp_s2s_port"       ,       lconfig->c_xmpp_s2s_port        );
 220         CtdlSetConfigLong(      "c_pop3_fetch"          ,       lconfig->c_pop3_fetch           );
 221         CtdlSetConfigLong(      "c_pop3_fastest"        ,       lconfig->c_pop3_fastest         );
 222         CtdlSetConfigInt(       "c_spam_flag_only"      ,       lconfig->c_spam_flag_only       );
 223         CtdlSetConfigInt(       "c_guest_logins"        ,       lconfig->c_guest_logins         );
 224         CtdlSetConfigInt(       "c_nntp_port"           ,       lconfig->c_nntp_port            );
 225         CtdlSetConfigInt(       "c_nntps_port"          ,       lconfig->c_nntps_port           );
 226 }
 227
 228
 229
 230 /*
 231  * Called during the initialization of Citadel server.
 232  * It verifies the system's integrity and reads citadel.config into memory.
 233  */
 234 void initialize_config_system(void) {
 235         FILE *cfp;
 236         int rv;
 237         struct legacy_config lconfig;   // legacy configuration
 238         ctdlconfig = NewHash(1, NULL);  // set up the real config system
 239
 240         /* Ensure that we are linked to the correct version of libcitadel */
 241         if (libcitadel_version_number() < LIBCITADEL_VERSION_NUMBER) {
 242                 fprintf(stderr, "You are running libcitadel version %d.%02d\n",
 243                         (libcitadel_version_number() / 100), (libcitadel_version_number() % 100)
 244                 );
 245                 fprintf(stderr, "citserver was compiled against version %d.%02d\n",
 246                         (LIBCITADEL_VERSION_NUMBER / 100), (LIBCITADEL_VERSION_NUMBER % 100)
 247                 );
 248                 exit(CTDLEXIT_LIBCITADEL);
 249         }
 250
 251         if (chdir(ctdl_bbsbase_dir) != 0) {
 252                 fprintf(stderr,
 253                         "This program could not be started.\nUnable to change directory to %s\nError: %s\n",
 254                         ctdl_bbsbase_dir,
 255                         strerror(errno)
 256                 );
 257                 exit(CTDLEXIT_HOME);
 258         }
 259
 260         memset(&lconfig, 0, sizeof(struct legacy_config));
 261         cfp = fopen(file_citadel_config, "rb");
 262         if (cfp != NULL) {
 263                 if (CtdlGetConfigLong("c_config_created_or_migrated") > 0) {
 264                         fprintf(stderr, "Citadel Server found BOTH legacy and new configurations present.\n");
 265                         fprintf(stderr, "Exiting to prevent data corruption.\n");
 266                         exit(CTDLEXIT_CONFIG);
 267                 }
 268                 rv = fread((char *) &lconfig, sizeof(struct legacy_config), 1, cfp);
 269                 if (rv != 1)
 270                 {
 271                         fprintf(stderr,
 272                                 "Warning: Found a legacy config file %s has unexpected size. \n",
 273                                 file_citadel_config
 274                         );
 275                 }
 276
 277                 migrate_legacy_config(&lconfig);
 278
 279                 fclose(cfp);
 280                 if (unlink(file_citadel_config) != 0) {
 281                         fprintf(stderr, "Unable to remove legacy config file %s after migrating it.\n", file_citadel_config);
 282                         fprintf(stderr, "Exiting to prevent data corruption.\n");
 283                         exit(CTDLEXIT_CONFIG);
 284                 }
 285
 286                 /*
 287                  * Prevent migration/initialization from happening again.
 288                  */
 289                 CtdlSetConfigLong("c_config_created_or_migrated", (long)time(NULL));
 290
 291         }
 292
 293         /* New installation?  Set up configuration */
 294         if (CtdlGetConfigLong("c_config_created_or_migrated") <= 0) {
 295                 brand_new_installation_set_defaults();
 296         }
 297
 298         /* Only allow LDAP auth mode if we actually have LDAP support */
 299 #ifndef HAVE_LDAP
 300         if ((CtdlGetConfigInt("c_auth_mode") == AUTHMODE_LDAP) || (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_LDAP_AD)) {
 301                 fprintf(stderr, "Your system is configured for LDAP authentication,\n"
 302                                 "but you are running a server built without OpenLDAP support.\n");
 303                 exit(CTDL_EXIT_UNSUP_AUTH);
 304         }
 305 #endif
 306
 307         /* Default maximum message length is 10 megabytes.  This is site
 308          * configurable.  Also check to make sure the limit has not been
 309          * set below 8192 bytes.
 310          */
 311         if (CtdlGetConfigLong("c_maxmsglen") <= 0)      CtdlSetConfigLong("c_maxmsglen", 10485760);
 312         if (CtdlGetConfigLong("c_maxmsglen") < 8192)    CtdlSetConfigLong("c_maxmsglen", 8192);
 313
 314         /*
 315          * Default lower and upper limits on number of worker threads
 316          */
 317         if (CtdlGetConfigInt("c_min_workers") < 5)      CtdlSetConfigInt("c_min_workers", 5);   // min
 318         if (CtdlGetConfigInt("c_max_workers") == 0)     CtdlSetConfigInt("c_max_workers", 256); // default max
 319         if (CtdlGetConfigInt("c_max_workers") < CtdlGetConfigInt("c_min_workers")) {
 320                 CtdlSetConfigInt("c_max_workers", CtdlGetConfigInt("c_min_workers"));           // max >= min
 321         }
 322
 323         /* Networking more than once every five minutes just isn't sane */
 324         if (CtdlGetConfigLong("c_net_freq") == 0)       CtdlSetConfigLong("c_net_freq", 3600);  // once per hour default
 325         if (CtdlGetConfigLong("c_net_freq") < 300)      CtdlSetConfigLong("c_net_freq", 300);   // minimum 5 minutes
 326
 327         /* Same goes for POP3 */
 328         if (CtdlGetConfigLong("c_pop3_fetch") == 0)     CtdlSetConfigLong("c_pop3_fetch", 3600);        // once per hour default
 329         if (CtdlGetConfigLong("c_pop3_fetch") < 300)    CtdlSetConfigLong("c_pop3_fetch", 300);         // 5 minutes min
 330         if (CtdlGetConfigLong("c_pop3_fastest") == 0)   CtdlSetConfigLong("c_pop3_fastest", 3600);      // once per hour default
 331         if (CtdlGetConfigLong("c_pop3_fastest") < 300)  CtdlSetConfigLong("c_pop3_fastest", 300);       // 5 minutes min
 332
 333         /* "create new user" only works with native authentication mode */
 334         if (CtdlGetConfigInt("c_auth_mode") != AUTHMODE_NATIVE) {
 335                 CtdlSetConfigInt("c_disable_newu", 1);
 336         }
 337 }
 338
 339
 340
 341 /*
 342  * Called when Citadel server is shutting down.
 343  * Clears out the config hash table.
 344  */
 345 void shutdown_config_system(void)
 346 {
 347         DeleteHash(&ctdlconfig);
 348 }
 349
 350
 351
 352 /*
 353  * Set a system config value.  Simple key/value here.
 354  */
 355 void CtdlSetConfigStr(char *key, char *value)
 356 {
 357         int key_len = strlen(key);
 358         int value_len = strlen(value);
 359
 360         /* Save it in memory */
 361         Put(ctdlconfig, key, key_len, strdup(value), NULL);
 362
 363         /* Also write it to the config database */
 364
 365         int dbv_size = key_len + value_len + 2;
 366         char *dbv = malloc(dbv_size);
 367         strcpy(dbv, key);
 368         strcpy(&dbv[key_len + 1], value);
 369         cdb_store(CDB_CONFIG, key, key_len, dbv, dbv_size);
 370         free(dbv);
 371 }
 372
 373
 374 /*
 375  * Set a numeric system config value (long integer)
 376  */
 377 void CtdlSetConfigLong(char *key, long value)
 378 {
 379         char longstr[256];
 380         sprintf(longstr, "%ld", value);
 381         CtdlSetConfigStr(key, longstr);
 382 }
 383
 384
 385 /*
 386  * Set a numeric system config value (integer)
 387  */
 388 void CtdlSetConfigInt(char *key, int value)
 389 {
 390         char intstr[256];
 391         sprintf(intstr, "%d", value);
 392         CtdlSetConfigStr(key, intstr);
 393 }
 394
 395
 396
 397 /*
 398  * Delete a system config value.
 399  */
 400 void CtdlDelConfig(char *key)
 401 {
 402         int key_len = strlen(key);
 403
 404         if (IsEmptyStr(key)) return;
 405
 406         /* Delete from the database. */
 407         cdb_delete(CDB_CONFIG, key, key_len);
 408
 409         /* Delete from the in-memory cache */
 410         HashPos *Pos = GetNewHashPos(ctdlconfig, 1);
 411         if (GetHashPosFromKey(ctdlconfig, key, key_len, Pos)) {
 412                 DeleteEntryFromHash(ctdlconfig, Pos);
 413         }
 414         DeleteHashPos(&Pos);
 415
 416         assert(Pos == NULL);    // no memory leaks allowed
 417 }
 418
 419
 420
 421
 422 /*
 423  * Fetch a system config value.  Caller does *not* own the returned value and may not alter it.
 424  */
 425 char *CtdlGetConfigStr(char *key)
 426 {
 427         char *value = NULL;
 428         struct cdbdata *cdb;
 429         int key_len = strlen(key);
 430
 431         if (IsEmptyStr(key)) return(NULL);
 432
 433         /* First look in memory */
 434         if (GetHash(ctdlconfig, key, key_len, (void *)&value))
 435         {
 436                 return value;
 437         }
 438
 439         /* Then look in the database. */
 440
 441         cdb = cdb_fetch(CDB_CONFIG, key, key_len);
 442
 443         if (cdb == NULL) {      /* nope, not there either. */
 444                 return(NULL);
 445         }
 446
 447         /* Got it.  Save it in memory for the next fetch. */
 448         value = strdup(cdb->ptr + key_len + 1);         /* The key was stored there too; skip past it */
 449         cdb_free(cdb);
 450         Put(ctdlconfig, key, key_len, value, NULL);
 451         return value;
 452 }
 453
 454
 455 /*
 456  * Fetch a system config value - integer
 457  */
 458 int CtdlGetConfigInt(char *key)
 459 {
 460         char *s = CtdlGetConfigStr(key);
 461         if (s) return atoi(s);
 462         return 0;
 463 }
 464
 465
 466 /*
 467  * Fetch a system config value - long integer
 468  */
 469 long CtdlGetConfigLong(char *key)
 470 {
 471         char *s = CtdlGetConfigStr(key);
 472         if (s) return atol(s);
 473         return 0;
 474 }
 475
 476
 477
 478 /**********************************************************************/
 479
 480
 481
 482
 483
 484
 485
 486
 487
 488
 489 void CtdlGetSysConfigBackend(long msgnum, void *userdata) {
 490         config_msgnum = msgnum;
 491 }
 492
 493
 494 char *CtdlGetSysConfig(char *sysconfname) {
 495         char hold_rm[ROOMNAMELEN];
 496         long msgnum;
 497         char *conf;
 498         struct CtdlMessage *msg;
 499         char buf[SIZ];
 500
 501         strcpy(hold_rm, CC->room.QRname);
 502         if (CtdlGetRoom(&CC->room, SYSCONFIGROOM) != 0) {
 503                 CtdlGetRoom(&CC->room, hold_rm);
 504                 return NULL;
 505         }
 506
 507
 508         /* We want the last (and probably only) config in this room */
 509         begin_critical_section(S_CONFIG);
 510         config_msgnum = (-1L);
 511         CtdlForEachMessage(MSGS_LAST, 1, NULL, sysconfname, NULL,
 512                            CtdlGetSysConfigBackend, NULL);
 513         msgnum = config_msgnum;
 514         end_critical_section(S_CONFIG);
 515
 516         if (msgnum < 0L) {
 517                 conf = NULL;
 518         }
 519         else {
 520                 msg = CtdlFetchMessage(msgnum, 1, 1);
 521                 if (msg != NULL) {
 522                         conf = strdup(msg->cm_fields[eMesageText]);
 523                         CM_Free(msg);
 524                 }
 525                 else {
 526                         conf = NULL;
 527                 }
 528         }
 529
 530         CtdlGetRoom(&CC->room, hold_rm);
 531
 532         if (conf != NULL) do {
 533                         extract_token(buf, conf, 0, '\n', sizeof buf);
 534                         strcpy(conf, &conf[strlen(buf)+1]);
 535                 } while ( (!IsEmptyStr(conf)) && (!IsEmptyStr(buf)) );
 536
 537         return(conf);
 538 }
 539
 540
 541 void CtdlPutSysConfig(char *sysconfname, char *sysconfdata) {
 542         CtdlWriteObject(SYSCONFIGROOM, sysconfname, sysconfdata, (strlen(sysconfdata)+1), NULL, 0, 1, 0);
 543 }
 544