citadel/citserver.c

   1 /*
   2  * $Id$
   3  *
   4  * Main source module for the Citadel server
   5  *
   6  */
   7
   8 #include "sysdep.h"
   9 #include <stdlib.h>
  10 #include <unistd.h>
  11 #include <stdio.h>
  12 #include <fcntl.h>
  13 #include <signal.h>
  14 #include <sys/types.h>
  15 #include <sys/stat.h>
  16
  17
  18 #if TIME_WITH_SYS_TIME
  19 # include <sys/time.h>
  20 # include <time.h>
  21 #else
  22 # if HAVE_SYS_TIME_H
  23 #  include <sys/time.h>
  24 # else
  25 #  include <time.h>
  26 # endif
  27 #endif
  28
  29 #if HAVE_BACKTRACE
  30 #include <execinfo.h>
  31 #endif
  32
  33 #include <ctype.h>
  34 #include <string.h>
  35 #include <dirent.h>
  36 #include <errno.h>
  37 #include <limits.h>
  38 #include <netdb.h>
  39 #include <sys/types.h>
  40 #include <sys/socket.h>
  41 #include <netinet/in.h>
  42 #include <arpa/inet.h>
  43 #include <libcitadel.h>
  44 #include "citadel.h"
  45 #include "server.h"
  46 #include "sysdep_decls.h"
  47 #include "threads.h"
  48 #include "citserver.h"
  49 #include "config.h"
  50 #include "database.h"
  51 #include "housekeeping.h"
  52 #include "user_ops.h"
  53 #include "msgbase.h"
  54 #include "support.h"
  55 #include "locate_host.h"
  56 #include "room_ops.h"
  57 #include "file_ops.h"
  58 #include "policy.h"
  59 #include "control.h"
  60 #include "euidindex.h"
  61 #include "svn_revision.h"
  62
  63 #ifndef HAVE_SNPRINTF
  64 #include "snprintf.h"
  65 #endif
  66
  67 #include "ctdl_module.h"
  68
  69
  70 struct CitContext *ContextList = NULL;
  71 struct CitContext* next_session = NULL;
  72 char *unique_session_numbers;
  73 int ScheduledShutdown = 0;
  74 time_t server_startup_time;
  75 int panic_fd;
  76
  77 /**
  78  * \brief print the actual stack frame.
  79  */
  80 void cit_backtrace(void)
  81 {
  82 #ifdef HAVE_BACKTRACE
  83         void *stack_frames[50];
  84         size_t size, i;
  85         char **strings;
  86
  87
  88         size = backtrace(stack_frames, sizeof(stack_frames) / sizeof(void*));
  89         strings = backtrace_symbols(stack_frames, size);
  90         for (i = 0; i < size; i++) {
  91                 if (strings != NULL)
  92                         CtdlLogPrintf(1, "%s\n", strings[i]);
  93                 else
  94                         CtdlLogPrintf(1, "%p\n", stack_frames[i]);
  95         }
  96         free(strings);
  97 #endif
  98 }
  99
 100 /**
 101  * \brief print the actual stack frame.
 102  */
 103 void cit_panic_backtrace(int SigNum)
 104 {
 105 #ifdef HAVE_BACKTRACE
 106         void *stack_frames[10];
 107         size_t size, i;
 108         char **strings;
 109
 110         printf("caught signal 11\n");
 111         size = backtrace(stack_frames, sizeof(stack_frames) / sizeof(void*));
 112         strings = backtrace_symbols(stack_frames, size);
 113         for (i = 0; i < size; i++) {
 114                 if (strings != NULL)
 115                         CtdlLogPrintf(1, "%s\n", strings[i]);
 116                 else
 117                         CtdlLogPrintf(1, "%p\n", stack_frames[i]);
 118         }
 119         free(strings);
 120 #endif
 121         exit(-1);
 122 }
 123
 124 /*
 125  * Various things that need to be initialized at startup
 126  */
 127 void master_startup(void) {
 128         struct timeval tv;
 129         unsigned int seed;
 130         FILE *urandom;
 131         struct ctdlroom qrbuf;
 132
 133         CtdlLogPrintf(CTDL_DEBUG, "master_startup() started\n");
 134         time(&server_startup_time);
 135
 136         CtdlLogPrintf(CTDL_INFO, "Opening databases\n");
 137         open_databases();
 138
 139         ctdl_thread_internal_init_tsd();
 140
 141         CtdlThreadAllocTSD();
 142
 143         check_ref_counts();
 144
 145         CtdlLogPrintf(CTDL_INFO, "Creating base rooms (if necessary)\n");
 146         create_room(config.c_baseroom,  0, "", 0, 1, 0, VIEW_BBS);
 147         create_room(AIDEROOM,           3, "", 0, 1, 0, VIEW_BBS);
 148         create_room(SYSCONFIGROOM,      3, "", 0, 1, 0, VIEW_BBS);
 149         create_room(config.c_twitroom,  0, "", 0, 1, 0, VIEW_BBS);
 150
 151         /* The "Local System Configuration" room doesn't need to be visible */
 152         if (lgetroom(&qrbuf, SYSCONFIGROOM) == 0) {
 153                 qrbuf.QRflags2 |= QR2_SYSTEM;
 154                 lputroom(&qrbuf);
 155         }
 156
 157         /* Aide needs to be public postable, else we're not RFC conformant. */
 158         if (lgetroom(&qrbuf, AIDEROOM) == 0) {
 159                 qrbuf.QRflags2 |= QR2_SMTP_PUBLIC;
 160                 lputroom(&qrbuf);
 161         }
 162
 163         CtdlLogPrintf(CTDL_INFO, "Seeding the pseudo-random number generator...\n");
 164         urandom = fopen("/dev/urandom", "r");
 165         if (urandom != NULL) {
 166                 fread(&seed, sizeof seed, 1, urandom);
 167                 fclose(urandom);
 168         }
 169         else {
 170                 gettimeofday(&tv, NULL);
 171                 seed = tv.tv_usec;
 172         }
 173         srand(seed);
 174         srandom(seed);
 175
 176         CtdlLogPrintf(CTDL_INFO, "Initializing ipgm secret\n");
 177         get_config();
 178         config.c_ipgm_secret = rand();
 179         put_config();
 180
 181         CtdlLogPrintf(CTDL_DEBUG, "master_startup() finished\n");
 182 }
 183
 184
 185 /*
 186  * Cleanup routine to be called when the server is shutting down.
 187  */
 188 void master_cleanup(int exitcode) {
 189         struct CleanupFunctionHook *fcn;
 190         static int already_cleaning_up = 0;
 191
 192         if (already_cleaning_up) while(1) sleep(1);
 193         already_cleaning_up = 1;
 194
 195         /* Run any cleanup routines registered by loadable modules */
 196         for (fcn = CleanupHookTable; fcn != NULL; fcn = fcn->next) {
 197                 (*fcn->h_function_pointer)();
 198         }
 199
 200         /* Close the AdjRefCount queue file */
 201         AdjRefCount(-1, 0);
 202
 203         /* Do system-dependent stuff */
 204         sysdep_master_cleanup();
 205
 206         /* Close databases */
 207         CtdlLogPrintf(CTDL_INFO, "Closing databases\n");
 208         close_databases();
 209
 210 #ifdef DEBUG_MEMORY_LEAKS
 211         dump_heap();
 212 #endif
 213
 214         /* If the operator requested a halt but not an exit, halt here. */
 215         if (shutdown_and_halt) {
 216                 CtdlLogPrintf(CTDL_NOTICE, "citserver: Halting server without exiting.\n");
 217                 fflush(stdout); fflush(stderr);
 218                 while(1) {
 219                         sleep(32767);
 220                 }
 221         }
 222
 223         release_control();
 224
 225         /* Now go away. */
 226         CtdlLogPrintf(CTDL_NOTICE, "citserver: Exiting with status %d\n", exitcode);
 227         fflush(stdout); fflush(stderr);
 228
 229         if (restart_server != 0)
 230                 exit(1);
 231         if ((running_as_daemon != 0) && (exitcode == 0))
 232                 exitcode = CTDLEXIT_SHUTDOWN;
 233         exit(exitcode);
 234 }
 235
 236
 237
 238 /*
 239  * Terminate a session.
 240  */
 241 void RemoveContext (struct CitContext *con)
 242 {
 243         if (con==NULL) {
 244                 CtdlLogPrintf(CTDL_ERR,
 245                         "WARNING: RemoveContext() called with NULL!\n");
 246                 return;
 247         }
 248         CtdlLogPrintf(CTDL_DEBUG, "RemoveContext() session %d\n", con->cs_pid);
 249
 250         /* Run any cleanup routines registered by loadable modules.
 251          * Note: We have to "become_session()" because the cleanup functions
 252          *       might make references to "CC" assuming it's the right one.
 253          */
 254         become_session(con);
 255         logout();
 256         PerformSessionHooks(EVT_STOP);
 257         become_session(NULL);
 258
 259         CtdlLogPrintf(CTDL_NOTICE, "[%3d] Session ended.\n", con->cs_pid);
 260
 261         /* If the client is still connected, blow 'em away. */
 262         CtdlLogPrintf(CTDL_DEBUG, "Closing socket %d\n", con->client_socket);
 263         close(con->client_socket);
 264
 265         /* If using AUTHMODE_LDAP, free the DN */
 266         if (con->ldap_dn) {
 267                 free(con->ldap_dn);
 268                 con->ldap_dn = NULL;
 269         }
 270
 271         CtdlLogPrintf(CTDL_DEBUG, "Done with RemoveContext()\n");
 272 }
 273
 274
 275
 276
 277
 278 /*
 279  * cmd_info()  -  tell the client about this server
 280  */
 281 void cmd_info(void) {
 282         cprintf("%d Server info:\n", LISTING_FOLLOWS);
 283         cprintf("%d\n", CC->cs_pid);
 284         cprintf("%s\n", config.c_nodename);
 285         cprintf("%s\n", config.c_humannode);
 286         cprintf("%s\n", config.c_fqdn);
 287         cprintf("%s\n", CITADEL);
 288         cprintf("%d\n", REV_LEVEL);
 289         cprintf("%s\n", config.c_site_location);
 290         cprintf("%s\n", config.c_sysadm);
 291         cprintf("%d\n", SERVER_TYPE);
 292         cprintf("%s\n", config.c_moreprompt);
 293         cprintf("1\n"); /* 1 = yes, this system supports floors */
 294         cprintf("1\n"); /* 1 = we support the extended paging options */
 295         cprintf("%s\n", CC->cs_nonce);
 296         cprintf("1\n"); /* 1 = yes, this system supports the QNOP command */
 297
 298 #ifdef HAVE_LDAP
 299         cprintf("1\n"); /* 1 = yes, this server is LDAP-enabled */
 300 #else
 301         cprintf("0\n"); /* 1 = no, this server is not LDAP-enabled */
 302 #endif
 303
 304         if (config.c_auth_mode == AUTHMODE_NATIVE) {
 305                 cprintf("%d\n", config.c_disable_newu);
 306         }
 307         else {
 308                 cprintf("1\n"); /* "create new user" does not work with non-native auth modes */
 309         }
 310
 311         cprintf("%s\n", config.c_default_cal_zone);
 312
 313         /* Output load averages */
 314         cprintf("%f\n", CtdlThreadLoadAvg);
 315         cprintf("%f\n", CtdlThreadWorkerAvg);
 316         cprintf("%d\n", CtdlThreadGetCount());
 317
 318         cprintf("1\n");         /* yes, Sieve mail filtering is supported */
 319         cprintf("%d\n", config.c_enable_fulltext);
 320         cprintf("%s\n", svn_revision());
 321
 322         if (config.c_auth_mode == AUTHMODE_NATIVE) {
 323                 cprintf("1\n"); /* OpenID is enabled when using native auth */
 324         }
 325         else {
 326                 cprintf("0\n"); /* OpenID is disabled when using non-native auth */
 327         }
 328
 329         cprintf("000\n");
 330 }
 331
 332
 333 /*
 334  * returns an asterisk if there are any instant messages waiting,
 335  * space otherwise.
 336  */
 337 char CtdlCheckExpress(void) {
 338         if (CC->FirstExpressMessage == NULL) {
 339                 return(' ');
 340         }
 341         else {
 342                 return('*');
 343         }
 344 }
 345
 346 void cmd_time(void)
 347 {
 348    time_t tv;
 349    struct tm tmp;
 350
 351    tv = time(NULL);
 352    localtime_r(&tv, &tmp);
 353
 354    /* timezone and daylight global variables are not portable. */
 355 #ifdef HAVE_STRUCT_TM_TM_GMTOFF
 356    cprintf("%d %ld|%ld|%d\n", CIT_OK, (long)tv, tmp.tm_gmtoff, tmp.tm_isdst);
 357 #else
 358    cprintf("%d %ld|%ld|%d\n", CIT_OK, (long)tv, timezone, tmp.tm_isdst);
 359 #endif
 360 }
 361
 362
 363 /*
 364  * Check originating host against the public_clients file.  This determines
 365  * whether the client is allowed to change the hostname for this session
 366  * (for example, to show the location of the user rather than the location
 367  * of the client).
 368  */
 369 int is_public_client(void)
 370 {
 371         char buf[1024];
 372         char addrbuf[1024];
 373         FILE *fp;
 374         int i;
 375         char *public_clientspos;
 376         char *public_clientsend;
 377         char *paddr = NULL;
 378         struct stat statbuf;
 379         static time_t pc_timestamp = 0;
 380         static char public_clients[SIZ];
 381         static char public_clients_file[SIZ];
 382
 383 #define LOCALHOSTSTR "127.0.0.1"
 384
 385         snprintf(public_clients_file,
 386                          sizeof public_clients_file,
 387                          "%s/public_clients",
 388                          ctdl_etc_dir);
 389
 390         /*
 391          * Check the time stamp on the public_clients file.  If it's been
 392          * updated since the last time we were here (or if this is the first
 393          * time we've been through the loop), read its contents and learn
 394          * the IP addresses of the listed hosts.
 395          */
 396         if (stat(public_clients_file, &statbuf) != 0) {
 397                 /* No public_clients file exists, so bail out */
 398                 CtdlLogPrintf(CTDL_WARNING, "Warning: '%s' does not exist\n",
 399                                 public_clients_file);
 400                 return(0);
 401         }
 402
 403         if (statbuf.st_mtime > pc_timestamp) {
 404                 begin_critical_section(S_PUBLIC_CLIENTS);
 405                 CtdlLogPrintf(CTDL_INFO, "Loading %s\n", public_clients_file);
 406
 407                 public_clientspos = &public_clients[0];
 408                 public_clientsend = public_clientspos + SIZ;
 409                 safestrncpy(public_clientspos, LOCALHOSTSTR, sizeof public_clients);
 410                 public_clientspos += sizeof(LOCALHOSTSTR) - 1;
 411
 412                 if (hostname_to_dotted_quad(addrbuf, config.c_fqdn) == 0) {
 413                         *(public_clientspos++) = '|';
 414                         paddr = &addrbuf[0];
 415                         while (!IsEmptyStr (paddr) &&
 416                                (public_clientspos < public_clientsend))
 417                                 *(public_clientspos++) = *(paddr++);
 418                 }
 419
 420                 fp = fopen(public_clients_file, "r");
 421                 if (fp != NULL)
 422                         while ((fgets(buf, sizeof buf, fp)!=NULL) &&
 423                                (public_clientspos < public_clientsend)){
 424                                 char *ptr;
 425                                 ptr = buf;
 426                                 while (!IsEmptyStr(ptr)) {
 427                                         if (*ptr == '#') {
 428                                                 *ptr = 0;
 429                                                 break;
 430                                         }
 431                                 else ptr++;
 432                                 }
 433                                 ptr--;
 434                                 while (ptr>buf && isspace(*ptr)) {
 435                                         *(ptr--) = 0;
 436                                 }
 437                                 if (hostname_to_dotted_quad(addrbuf, buf) == 0) {
 438                                         *(public_clientspos++) = '|';
 439                                         paddr = addrbuf;
 440                                         while (!IsEmptyStr(paddr) &&
 441                                                (public_clientspos < public_clientsend)){
 442                                                 *(public_clientspos++) = *(paddr++);
 443                                         }
 444                                 }
 445                         }
 446                 fclose(fp);
 447                 pc_timestamp = time(NULL);
 448                 end_critical_section(S_PUBLIC_CLIENTS);
 449         }
 450
 451         CtdlLogPrintf(CTDL_DEBUG, "Checking whether %s is a local or public client\n",
 452                 CC->cs_addr);
 453         for (i=0; i<num_parms(public_clients); ++i) {
 454                 extract_token(addrbuf, public_clients, i, '|', sizeof addrbuf);
 455                 if (!strcasecmp(CC->cs_addr, addrbuf)) {
 456                         CtdlLogPrintf(CTDL_DEBUG, "... yes it is.\n");
 457                         return(1);
 458                 }
 459         }
 460
 461         /* No hits.  This is not a public client. */
 462         CtdlLogPrintf(CTDL_DEBUG, "... no it isn't.\n");
 463         return(0);
 464 }
 465
 466
 467 /*
 468  * the client is identifying itself to the server
 469  */
 470 void cmd_iden(char *argbuf)
 471 {
 472         int dev_code;
 473         int cli_code;
 474         int rev_level;
 475         char desc[128];
 476         char from_host[128];
 477         struct in_addr addr;
 478         int do_lookup = 0;
 479
 480         if (num_parms(argbuf)<4) {
 481                 cprintf("%d usage error\n", ERROR + ILLEGAL_VALUE);
 482                 return;
 483         }
 484
 485         dev_code = extract_int(argbuf,0);
 486         cli_code = extract_int(argbuf,1);
 487         rev_level = extract_int(argbuf,2);
 488         extract_token(desc, argbuf, 3, '|', sizeof desc);
 489
 490         safestrncpy(from_host, config.c_fqdn, sizeof from_host);
 491         from_host[sizeof from_host - 1] = 0;
 492         if (num_parms(argbuf)>=5) extract_token(from_host, argbuf, 4, '|', sizeof from_host);
 493
 494         CC->cs_clientdev = dev_code;
 495         CC->cs_clienttyp = cli_code;
 496         CC->cs_clientver = rev_level;
 497         safestrncpy(CC->cs_clientname, desc, sizeof CC->cs_clientname);
 498         CC->cs_clientname[31] = 0;
 499
 500         if (!IsEmptyStr(from_host)) {
 501                 if (CC->is_local_socket) do_lookup = 1;
 502                 else if (is_public_client()) do_lookup = 1;
 503         }
 504
 505         if (do_lookup) {
 506                 CtdlLogPrintf(CTDL_DEBUG, "Looking up hostname '%s'\n", from_host);
 507                 if ((addr.s_addr = inet_addr(from_host)) != -1) {
 508                         locate_host(CC->cs_host, sizeof CC->cs_host,
 509                                 CC->cs_addr, sizeof CC->cs_addr,
 510                                 &addr);
 511                 }
 512                 else {
 513                         safestrncpy(CC->cs_host, from_host, sizeof CC->cs_host);
 514                         CC->cs_host[sizeof CC->cs_host - 1] = 0;
 515                 }
 516         }
 517
 518         CtdlLogPrintf(CTDL_NOTICE, "Client %d/%d/%01d.%02d (%s) from %s\n",
 519                 dev_code,
 520                 cli_code,
 521                 (rev_level / 100),
 522                 (rev_level % 100),
 523                 desc,
 524                 CC->cs_host);
 525         cprintf("%d Ok\n",CIT_OK);
 526 }
 527
 528
 529 /*
 530  * display system messages or help
 531  */
 532 void cmd_mesg(char *mname)
 533 {
 534         FILE *mfp;
 535         char targ[256];
 536         char buf[256];
 537         char buf2[256];
 538         char *dirs[2];
 539         DIR *dp;
 540         struct dirent *d;
 541
 542         extract_token(buf, mname, 0, '|', sizeof buf);
 543
 544         dirs[0] = strdup(ctdl_message_dir);
 545         dirs[1] = strdup(ctdl_hlp_dir);
 546
 547         snprintf(buf2, sizeof buf2, "%s.%d.%d",
 548                 buf, CC->cs_clientdev, CC->cs_clienttyp);
 549
 550         /* If the client requested "?" then produce a listing */
 551         if (!strcmp(buf, "?")) {
 552                 cprintf("%d %s\n", LISTING_FOLLOWS, buf);
 553                 dp = opendir(dirs[1]);
 554                 if (dp != NULL) {
 555                         while (d = readdir(dp), d != NULL) {
 556                                 if (d->d_name[0] != '.') {
 557                                         cprintf(" %s\n", d->d_name);
 558                                 }
 559                         }
 560                         closedir(dp);
 561                 }
 562                 cprintf("000\n");
 563                 free(dirs[0]);
 564                 free(dirs[1]);
 565                 return;
 566         }
 567
 568         /* Otherwise, look for the requested file by name. */
 569         else {
 570                 mesg_locate(targ, sizeof targ, buf2, 2, (const char **)dirs);
 571                 if (IsEmptyStr(targ)) {
 572                         snprintf(buf2, sizeof buf2, "%s.%d",
 573                                                         buf, CC->cs_clientdev);
 574                         mesg_locate(targ, sizeof targ, buf2, 2,
 575                                                         (const char **)dirs);
 576                         if (IsEmptyStr(targ)) {
 577                                 mesg_locate(targ, sizeof targ, buf, 2,
 578                                                         (const char **)dirs);
 579                         }
 580                 }
 581         }
 582
 583         free(dirs[0]);
 584         free(dirs[1]);
 585
 586         if (IsEmptyStr(targ)) {
 587                 cprintf("%d '%s' not found.  (Searching in %s and %s)\n",
 588                         ERROR + FILE_NOT_FOUND,
 589                         mname,
 590                         ctdl_message_dir,
 591                         ctdl_hlp_dir
 592                 );
 593                 return;
 594         }
 595
 596         mfp = fopen(targ, "r");
 597         if (mfp==NULL) {
 598                 cprintf("%d Cannot open '%s': %s\n",
 599                         ERROR + INTERNAL_ERROR, targ, strerror(errno));
 600                 return;
 601         }
 602         cprintf("%d %s\n", LISTING_FOLLOWS,buf);
 603
 604         while (fgets(buf, (sizeof buf - 1), mfp) != NULL) {
 605                 buf[strlen(buf)-1] = 0;
 606                 do_help_subst(buf);
 607                 cprintf("%s\n",buf);
 608         }
 609
 610         fclose(mfp);
 611         cprintf("000\n");
 612 }
 613
 614
 615 /*
 616  * enter system messages or help
 617  */
 618 void cmd_emsg(char *mname)
 619 {
 620         FILE *mfp;
 621         char targ[256];
 622         char buf[256];
 623         char *dirs[2];
 624         int a;
 625
 626         unbuffer_output();
 627
 628         if (CtdlAccessCheck(ac_aide)) return;
 629
 630         extract_token(buf, mname, 0, '|', sizeof buf);
 631         for (a=0; !IsEmptyStr(&buf[a]); ++a) {          /* security measure */
 632                 if (buf[a] == '/') buf[a] = '.';
 633         }
 634
 635         dirs[0] = strdup(ctdl_message_dir);
 636         dirs[1] = strdup(ctdl_hlp_dir);
 637
 638         mesg_locate(targ, sizeof targ, buf, 2, (const char**)dirs);
 639         free(dirs[0]);
 640         free(dirs[1]);
 641
 642         if (IsEmptyStr(targ)) {
 643                 snprintf(targ, sizeof targ,
 644                                  "%s/%s",
 645                                  ctdl_hlp_dir, buf);
 646         }
 647
 648         mfp = fopen(targ,"w");
 649         if (mfp==NULL) {
 650                 cprintf("%d Cannot open '%s': %s\n",
 651                         ERROR + INTERNAL_ERROR, targ, strerror(errno));
 652                 return;
 653         }
 654         cprintf("%d %s\n", SEND_LISTING, targ);
 655
 656         while (client_getln(buf, sizeof buf) >=0 && strcmp(buf, "000")) {
 657                 fprintf(mfp, "%s\n", buf);
 658         }
 659
 660         fclose(mfp);
 661 }
 662
 663
 664 /* Don't show the names of private rooms unless the viewing
 665  * user also knows the rooms.
 666  */
 667 void GenerateRoomDisplay(char *real_room,
 668                         struct CitContext *viewed,
 669                         struct CitContext *viewer) {
 670
 671         int ra;
 672
 673         strcpy(real_room, viewed->room.QRname);
 674         if (viewed->room.QRflags & QR_MAILBOX) {
 675                 strcpy(real_room, &real_room[11]);
 676         }
 677         if (viewed->room.QRflags & QR_PRIVATE) {
 678                 CtdlRoomAccess(&viewed->room, &viewer->user, &ra, NULL);
 679                 if ( (ra & UA_KNOWN) == 0) {
 680                         strcpy(real_room, "<private room>");
 681                 }
 682         }
 683
 684         if (viewed->cs_flags & CS_CHAT) {
 685                 while (strlen(real_room) < 14) {
 686                         strcat(real_room, " ");
 687                 }
 688                 strcpy(&real_room[14], "<chat>");
 689         }
 690
 691 }
 692
 693 /*
 694  * Convenience function.
 695  */
 696 int CtdlAccessCheck(int required_level) {
 697
 698         if (CC->internal_pgm) return(0);
 699         if (required_level >= ac_internal) {
 700                 cprintf("%d This is not a user-level command.\n",
 701                         ERROR + HIGHER_ACCESS_REQUIRED);
 702                 return(-1);
 703         }
 704
 705         if ((required_level >= ac_logged_in) && (CC->logged_in == 0)) {
 706                 cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN);
 707                 return(-1);
 708         }
 709
 710         if (CC->user.axlevel >= 6) return(0);
 711         if (required_level >= ac_aide) {
 712                 cprintf("%d This command requires Aide access.\n",
 713                         ERROR + HIGHER_ACCESS_REQUIRED);
 714                 return(-1);
 715         }
 716
 717         if (is_room_aide()) return(0);
 718         if (required_level >= ac_room_aide) {
 719                 cprintf("%d This command requires Aide or Room Aide access.\n",
 720                         ERROR + HIGHER_ACCESS_REQUIRED);
 721                 return(-1);
 722         }
 723
 724         /* shhh ... succeed quietly */
 725         return(0);
 726 }
 727
 728
 729
 730 /*
 731  * Terminate another running session
 732  */
 733 void cmd_term(char *cmdbuf)
 734 {
 735         int session_num;
 736         struct CitContext *ccptr;
 737         int found_it = 0;
 738         int allowed = 0;
 739
 740         session_num = extract_int(cmdbuf, 0);
 741         if (session_num == CC->cs_pid) {
 742                 cprintf("%d You can't kill your own session.\n", ERROR + ILLEGAL_VALUE);
 743                 return;
 744         }
 745
 746         CtdlLogPrintf(CTDL_DEBUG, "Locating session to kill\n");
 747         begin_critical_section(S_SESSION_TABLE);
 748         for (ccptr = ContextList; ccptr != NULL; ccptr = ccptr->next) {
 749                 if (session_num == ccptr->cs_pid) {
 750                         found_it = 1;
 751                         if ((ccptr->user.usernum == CC->user.usernum)
 752                            || (CC->user.axlevel >= 6)) {
 753                                 allowed = 1;
 754                                 ccptr->kill_me = 1;
 755                         }
 756                         else {
 757                                 allowed = 0;
 758                         }
 759                 }
 760         }
 761         end_critical_section(S_SESSION_TABLE);
 762
 763         if (found_it) {
 764                 if (allowed) {
 765                         cprintf("%d Session terminated.\n", CIT_OK);
 766                 }
 767                 else {
 768                         cprintf("%d You are not allowed to do that.\n",
 769                                 ERROR + HIGHER_ACCESS_REQUIRED);
 770                 }
 771         }
 772         else {
 773                 cprintf("%d No such session.\n", ERROR + ILLEGAL_VALUE);
 774         }
 775 }
 776
 777
 778
 779
 780
 781 /*
 782  * get the paginator prompt
 783  */
 784 void cmd_more(void) {
 785         cprintf("%d %s\n", CIT_OK, config.c_moreprompt);
 786 }
 787
 788 /*
 789  * echo
 790  */
 791 void cmd_echo(char *etext)
 792 {
 793         cprintf("%d %s\n", CIT_OK, etext);
 794 }
 795
 796
 797
 798 /*
 799  * identify as internal program
 800  */
 801 void cmd_ipgm(char *argbuf)
 802 {
 803         int secret;
 804
 805         secret = extract_int(argbuf, 0);
 806
 807         /* For security reasons, we do NOT allow this command to run
 808          * over the network.  Local sockets only.
 809          */
 810         if (!CC->is_local_socket) {
 811                 sleep(5);
 812                 cprintf("%d Authentication failed.\n",
 813                         ERROR + PASSWORD_REQUIRED);
 814         }
 815         else if (secret == config.c_ipgm_secret) {
 816                 CC->internal_pgm = 1;
 817                 strcpy(CC->curr_user, "<internal program>");
 818                 CC->cs_flags = CC->cs_flags|CS_STEALTH;
 819                 cprintf("%d Authenticated as an internal program.\n", CIT_OK);
 820         }
 821         else {
 822                 sleep(5);
 823                 cprintf("%d Authentication failed.\n",
 824                         ERROR + PASSWORD_REQUIRED);
 825                 CtdlLogPrintf(CTDL_ERR, "Warning: ipgm authentication failed.\n");
 826                 CC->kill_me = 1;
 827         }
 828 }
 829
 830
 831 /*
 832  * Shut down the server
 833  */
 834 void cmd_down(char *argbuf) {
 835         char *Reply ="%d Shutting down server.  Goodbye.\n";
 836
 837         if (CtdlAccessCheck(ac_aide)) return;
 838
 839         if (!IsEmptyStr(argbuf))
 840         {
 841                 int state = CIT_OK;
 842                 restart_server = extract_int(argbuf, 0);
 843
 844                 if (restart_server > 0)
 845                 {
 846                         Reply = "%d citserver will now shut down and automatically restart.\n";
 847                 }
 848                 if ((restart_server > 0) && !running_as_daemon)
 849                 {
 850                         CtdlLogPrintf(CTDL_ERR, "The user requested restart, but not running as daemon! Geronimooooooo!\n");
 851                         Reply = "%d Warning: citserver is not running in daemon mode and is therefore unlikely to restart automatically.\n";
 852                         state = ERROR;
 853                 }
 854                 cprintf(Reply, state);
 855         }
 856         else
 857         {
 858                 cprintf(Reply, CIT_OK + SERVER_SHUTTING_DOWN);
 859         }
 860         CtdlThreadStopAll();
 861 }
 862
 863 /*
 864  * Halt the server without exiting the server process.
 865  */
 866 void cmd_halt(void) {
 867
 868         if (CtdlAccessCheck(ac_aide)) return;
 869
 870         cprintf("%d Halting server.  Goodbye.\n", CIT_OK);
 871         CtdlThreadStopAll();
 872         shutdown_and_halt = 1;
 873 }
 874
 875 /*
 876  * Schedule or cancel a server shutdown
 877  */
 878 void cmd_scdn(char *argbuf)
 879 {
 880         int new_state;
 881         int state = CIT_OK;
 882         char *Reply = "%d %d\n";
 883
 884         if (CtdlAccessCheck(ac_aide)) return;
 885
 886         new_state = extract_int(argbuf, 0);
 887         if ((new_state == 2) || (new_state == 3))
 888         {
 889                 restart_server = 1;
 890                 if (!running_as_daemon)
 891                 {
 892                         CtdlLogPrintf(CTDL_ERR, "The user requested restart, but not running as deamon! Geronimooooooo!\n");
 893                         Reply = "%d %d Warning, not running in deamon mode. maybe we will come up again, but don't lean on it.\n";
 894                         state = ERROR;
 895                 }
 896
 897                 restart_server = extract_int(argbuf, 0);
 898                 new_state -= 2;
 899         }
 900         if ((new_state == 0) || (new_state == 1)) {
 901                 ScheduledShutdown = new_state;
 902         }
 903         cprintf(Reply, state, ScheduledShutdown);
 904 }
 905
 906
 907 /*
 908  * Set or unset asynchronous protocol mode
 909  */
 910 void cmd_asyn(char *argbuf)
 911 {
 912         int new_state;
 913
 914         new_state = extract_int(argbuf, 0);
 915         if ((new_state == 0) || (new_state == 1)) {
 916                 CC->is_async = new_state;
 917         }
 918         cprintf("%d %d\n", CIT_OK, CC->is_async);
 919 }
 920
 921
 922 /*
 923  * Generate a "nonce" for APOP-style authentication.
 924  *
 925  * RFC 1725 et al specify a PID to be placed in front of the nonce.
 926  * Quoth BTX: That would be stupid.
 927  */
 928 void generate_nonce(struct CitContext *con) {
 929         struct timeval tv;
 930
 931         memset(con->cs_nonce, NONCE_SIZE, 0);
 932         gettimeofday(&tv, NULL);
 933         memset(con->cs_nonce, NONCE_SIZE, 0);
 934         snprintf(con->cs_nonce, NONCE_SIZE, "<%d%ld@%s>",
 935                 rand(), (long)tv.tv_usec, config.c_fqdn);
 936 }
 937
 938
 939
 940
 941 /*
 942  * Back-end function for starting a session
 943  */
 944 void begin_session(struct CitContext *con)
 945 {
 946         socklen_t len;
 947         struct sockaddr_in sin;
 948
 949         /*
 950          * Initialize some variables specific to our context.
 951          */
 952         con->logged_in = 0;
 953         con->internal_pgm = 0;
 954         con->download_fp = NULL;
 955         con->upload_fp = NULL;
 956         con->FirstExpressMessage = NULL;
 957         time(&con->lastcmd);
 958         time(&con->lastidle);
 959         strcpy(con->lastcmdname, "    ");
 960         strcpy(con->cs_clientname, "(unknown)");
 961         strcpy(con->curr_user, NLI);
 962         *con->net_node = '\0';
 963         *con->fake_username = '\0';
 964         *con->fake_hostname = '\0';
 965         *con->fake_roomname = '\0';
 966         generate_nonce(con);
 967         safestrncpy(con->cs_host, config.c_fqdn, sizeof con->cs_host);
 968         safestrncpy(con->cs_addr, "", sizeof con->cs_addr);
 969         con->cs_host[sizeof con->cs_host - 1] = 0;
 970         len = sizeof sin;
 971         if (!CC->is_local_socket) {
 972                 if (!getpeername(con->client_socket, (struct sockaddr *) &sin, &len)) {
 973                         locate_host(con->cs_host, sizeof con->cs_host,
 974                                 con->cs_addr, sizeof con->cs_addr,
 975                                 &sin.sin_addr
 976                         );
 977                 }
 978         }
 979         else {
 980                 strcpy(con->cs_host, "");
 981         }
 982         con->cs_flags = 0;
 983         con->upload_type = UPL_FILE;
 984         con->dl_is_net = 0;
 985
 986         con->nologin = 0;
 987         if (((config.c_maxsessions > 0)&&(num_sessions > config.c_maxsessions)) || CtdlWantSingleUser()) {
 988                 con->nologin = 1;
 989         }
 990
 991         if (!CC->is_local_socket) {
 992                 CtdlLogPrintf(CTDL_NOTICE, "Session started from %s [%s].\n", con->cs_host, con->cs_addr);
 993         }
 994         else {
 995                 CtdlLogPrintf(CTDL_NOTICE, "Session started via local socket.\n");
 996         }
 997
 998         /* Run any session startup routines registered by loadable modules */
 999         PerformSessionHooks(EVT_START);
1000 }
1001
1002
1003 void citproto_begin_session() {
1004         if (CC->nologin==1) {
1005                 cprintf("%d %s: Too many users are already online (maximum is %d)\n",
1006                         ERROR + MAX_SESSIONS_EXCEEDED,
1007                         config.c_nodename, config.c_maxsessions
1008                 );
1009                 CC->kill_me = 1;
1010         }
1011         else {
1012                 cprintf("%d %s Citadel server ready.\n",
1013                         CIT_OK, config.c_nodename);
1014         }
1015 }
1016
1017
1018
1019
1020 /*
1021  * This loop recognizes all server commands.
1022  */
1023 void do_command_loop(void) {
1024         char cmdbuf[SIZ];
1025         const char *old_name = NULL;
1026
1027         old_name = CtdlThreadName("do_command_loop");
1028
1029         time(&CC->lastcmd);
1030         memset(cmdbuf, 0, sizeof cmdbuf); /* Clear it, just in case */
1031         if (client_getln(cmdbuf, sizeof cmdbuf) < 1) {
1032                 CtdlLogPrintf(CTDL_ERR, "Client disconnected: ending session.\n");
1033                 CC->kill_me = 1;
1034                 CtdlThreadName(old_name);
1035                 return;
1036         }
1037
1038         /* Log the server command, but don't show passwords... */
1039         if ( (strncasecmp(cmdbuf, "PASS", 4))
1040            && (strncasecmp(cmdbuf, "SETP", 4)) ) {
1041                 CtdlLogPrintf(CTDL_INFO, "%s\n", cmdbuf);
1042         }
1043         else {
1044                 CtdlLogPrintf(CTDL_INFO, "<password command sent>\n");
1045         }
1046
1047         buffer_output();
1048
1049         /*
1050          * Let other clients see the last command we executed, and
1051          * update the idle time, but not NOOP, QNOP, PEXP, GEXP, RWHO, or TIME.
1052          */
1053         if ( (strncasecmp(cmdbuf, "NOOP", 4))
1054            && (strncasecmp(cmdbuf, "QNOP", 4))
1055            && (strncasecmp(cmdbuf, "PEXP", 4))
1056            && (strncasecmp(cmdbuf, "GEXP", 4))
1057            && (strncasecmp(cmdbuf, "RWHO", 4))
1058            && (strncasecmp(cmdbuf, "TIME", 4)) ) {
1059                 strcpy(CC->lastcmdname, "    ");
1060                 safestrncpy(CC->lastcmdname, cmdbuf, sizeof(CC->lastcmdname));
1061                 time(&CC->lastidle);
1062         }
1063
1064         CtdlThreadName(cmdbuf);
1065
1066         if ((strncasecmp(cmdbuf, "ENT0", 4))
1067            && (strncasecmp(cmdbuf, "MESG", 4))
1068            && (strncasecmp(cmdbuf, "MSGS", 4)))
1069         {
1070            CC->cs_flags &= ~CS_POSTING;
1071         }
1072
1073         if (!strncasecmp(cmdbuf, "NOOP", 4)) {
1074                 cprintf("%d%cok\n", CIT_OK, CtdlCheckExpress() );
1075         }
1076
1077         else if (!strncasecmp(cmdbuf, "XYZZY", 5)) {
1078                 cprintf("%d Nothing happens.\n", CIT_OK);
1079         }
1080
1081         else if (!strncasecmp(cmdbuf, "QNOP", 4)) {
1082                 /* do nothing, this command returns no response */
1083         }
1084
1085         else if (!strncasecmp(cmdbuf,"QUIT",4)) {
1086                 cprintf("%d Goodbye.\n", CIT_OK);
1087                 CC->kill_me = 1;
1088         }
1089
1090         else if (!strncasecmp(cmdbuf,"ASYN",4)) {
1091                 cmd_asyn(&cmdbuf[5]);
1092         }
1093
1094         else if (!strncasecmp(cmdbuf,"LOUT",4)) {
1095                 if (CC->logged_in) logout();
1096                 cprintf("%d logged out.\n", CIT_OK);
1097         }
1098
1099         else if (!strncasecmp(cmdbuf,"USER",4)) {
1100                 cmd_user(&cmdbuf[5]);
1101         }
1102
1103         else if (!strncasecmp(cmdbuf,"PASS",4)) {
1104                 cmd_pass(&cmdbuf[5]);
1105         }
1106
1107         else if (!strncasecmp(cmdbuf,"NEWU",4)) {
1108                 cmd_newu(&cmdbuf[5]);
1109         }
1110
1111         else if (!strncasecmp(cmdbuf,"CREU",4)) {
1112                 cmd_creu(&cmdbuf[5]);
1113         }
1114
1115         else if (!strncasecmp(cmdbuf,"SETP",4)) {
1116                 cmd_setp(&cmdbuf[5]);
1117         }
1118
1119         else if (!strncasecmp(cmdbuf,"LRMS",4)) {
1120                 cmd_lrms(&cmdbuf[5]);
1121         }
1122
1123         else if (!strncasecmp(cmdbuf,"LKRA",4)) {
1124                 cmd_lkra(&cmdbuf[5]);
1125         }
1126
1127         else if (!strncasecmp(cmdbuf,"LKRN",4)) {
1128                 cmd_lkrn(&cmdbuf[5]);
1129         }
1130
1131         else if (!strncasecmp(cmdbuf,"LKRO",4)) {
1132                 cmd_lkro(&cmdbuf[5]);
1133         }
1134
1135         else if (!strncasecmp(cmdbuf,"LZRM",4)) {
1136                 cmd_lzrm(&cmdbuf[5]);
1137         }
1138
1139         else if (!strncasecmp(cmdbuf,"LPRM",4)) {
1140                 cmd_lprm(&cmdbuf[5]);
1141         }
1142
1143         else if (!strncasecmp(cmdbuf,"GETU",4)) {
1144                 cmd_getu();
1145         }
1146
1147         else if (!strncasecmp(cmdbuf,"SETU",4)) {
1148                 cmd_setu(&cmdbuf[5]);
1149         }
1150
1151         else if (!strncasecmp(cmdbuf,"GOTO",4)) {
1152                 cmd_goto(&cmdbuf[5]);
1153         }
1154
1155         else if (!strncasecmp(cmdbuf,"MSGS",4)) {
1156                 cmd_msgs(&cmdbuf[5]);
1157         }
1158
1159         else if (!strncasecmp(cmdbuf,"WHOK",4)) {
1160                 cmd_whok();
1161         }
1162
1163         else if (!strncasecmp(cmdbuf,"RDIR",4)) {
1164                 cmd_rdir();
1165         }
1166
1167         else if (!strncasecmp(cmdbuf,"EUID",4)) {
1168                 cmd_euid(&cmdbuf[5]);
1169         }
1170
1171         else if (!strncasecmp(cmdbuf,"MSG0",4)) {
1172                 cmd_msg0(&cmdbuf[5]);
1173         }
1174
1175         else if (!strncasecmp(cmdbuf,"MSG2",4)) {
1176                 cmd_msg2(&cmdbuf[5]);
1177         }
1178
1179         else if (!strncasecmp(cmdbuf,"MSG3",4)) {
1180                 cmd_msg3(&cmdbuf[5]);
1181         }
1182
1183         else if (!strncasecmp(cmdbuf,"MSG4",4)) {
1184                 cmd_msg4(&cmdbuf[5]);
1185         }
1186
1187         else if (!strncasecmp(cmdbuf,"MSGP",4)) {
1188                 cmd_msgp(&cmdbuf[5]);
1189         }
1190
1191         else if (!strncasecmp(cmdbuf,"OPNA",4)) {
1192                 cmd_opna(&cmdbuf[5]);
1193         }
1194
1195         else if (!strncasecmp(cmdbuf,"DLAT",4)) {
1196                 cmd_dlat(&cmdbuf[5]);
1197         }
1198
1199         else if (!strncasecmp(cmdbuf,"INFO",4)) {
1200                 cmd_info();
1201         }
1202
1203         else if (!strncasecmp(cmdbuf,"SLRP",4)) {
1204                 cmd_slrp(&cmdbuf[5]);
1205         }
1206
1207         else if (!strncasecmp(cmdbuf,"INVT",4)) {
1208                 cmd_invt_kick(&cmdbuf[5],1);
1209         }
1210
1211         else if (!strncasecmp(cmdbuf,"KICK",4)) {
1212                 cmd_invt_kick(&cmdbuf[5],0);
1213         }
1214
1215         else if (!strncasecmp(cmdbuf,"GETR",4)) {
1216                 cmd_getr();
1217         }
1218
1219         else if (!strncasecmp(cmdbuf,"SETR",4)) {
1220                 cmd_setr(&cmdbuf[5]);
1221         }
1222
1223         else if (!strncasecmp(cmdbuf,"GETA",4)) {
1224                 cmd_geta();
1225         }
1226
1227         else if (!strncasecmp(cmdbuf,"SETA",4)) {
1228                 cmd_seta(&cmdbuf[5]);
1229         }
1230
1231         else if (!strncasecmp(cmdbuf,"ENT0",4)) {
1232                 cmd_ent0(&cmdbuf[5]);
1233         }
1234
1235         else if (!strncasecmp(cmdbuf,"RINF",4)) {
1236                 cmd_rinf();
1237         }
1238
1239         else if (!strncasecmp(cmdbuf,"DELE",4)) {
1240                 cmd_dele(&cmdbuf[5]);
1241         }
1242
1243         else if (!strncasecmp(cmdbuf,"KILL",4)) {
1244                 cmd_kill(&cmdbuf[5]);
1245         }
1246
1247         else if (!strncasecmp(cmdbuf,"CRE8",4)) {
1248                 cmd_cre8(&cmdbuf[5]);
1249         }
1250
1251         else if (!strncasecmp(cmdbuf,"MOVE",4)) {
1252                 cmd_move(&cmdbuf[5]);
1253         }
1254
1255         else if (!strncasecmp(cmdbuf,"FORG",4)) {
1256                 cmd_forg();
1257         }
1258
1259         else if (!strncasecmp(cmdbuf,"MESG",4)) {
1260                 cmd_mesg(&cmdbuf[5]);
1261         }
1262
1263         else if (!strncasecmp(cmdbuf,"EMSG",4)) {
1264                 cmd_emsg(&cmdbuf[5]);
1265         }
1266
1267         else if (!strncasecmp(cmdbuf,"GNUR",4)) {
1268                 cmd_gnur();
1269         }
1270
1271         else if (!strncasecmp(cmdbuf,"VALI",4)) {
1272                 cmd_vali(&cmdbuf[5]);
1273         }
1274
1275         else if (!strncasecmp(cmdbuf,"EINF",4)) {
1276                 cmd_einf(&cmdbuf[5]);
1277         }
1278
1279         else if (!strncasecmp(cmdbuf,"LIST",4)) {
1280                 cmd_list(&cmdbuf[5]);
1281         }
1282
1283         else if (!strncasecmp(cmdbuf,"CHEK",4)) {
1284                 cmd_chek();
1285         }
1286
1287         else if (!strncasecmp(cmdbuf,"DELF",4)) {
1288                 cmd_delf(&cmdbuf[5]);
1289         }
1290
1291         else if (!strncasecmp(cmdbuf,"MOVF",4)) {
1292                 cmd_movf(&cmdbuf[5]);
1293         }
1294
1295         else if (!strncasecmp(cmdbuf,"OPEN",4)) {
1296                 cmd_open(&cmdbuf[5]);
1297         }
1298
1299         else if (!strncasecmp(cmdbuf,"CLOS",4)) {
1300                 cmd_clos();
1301         }
1302
1303         else if (!strncasecmp(cmdbuf,"UOPN",4)) {
1304                 cmd_uopn(&cmdbuf[5]);
1305         }
1306
1307         else if (!strncasecmp(cmdbuf,"UCLS",4)) {
1308                 cmd_ucls(&cmdbuf[5]);
1309         }
1310
1311         else if (!strncasecmp(cmdbuf,"READ",4)) {
1312                 cmd_read(&cmdbuf[5]);
1313         }
1314
1315         else if (!strncasecmp(cmdbuf,"WRIT",4)) {
1316                 cmd_writ(&cmdbuf[5]);
1317         }
1318
1319         else if (!strncasecmp(cmdbuf,"QUSR",4)) {
1320                 cmd_qusr(&cmdbuf[5]);
1321         }
1322
1323         else if (!strncasecmp(cmdbuf,"ECHO",4)) {
1324                 cmd_echo(&cmdbuf[5]);
1325         }
1326
1327         else if (!strncasecmp(cmdbuf,"OIMG",4)) {
1328                 cmd_oimg(&cmdbuf[5]);
1329         }
1330
1331         else if (!strncasecmp(cmdbuf,"MORE",4)) {
1332                 cmd_more();
1333         }
1334
1335         else if (!strncasecmp(cmdbuf,"NDOP",4)) {
1336                 cmd_ndop(&cmdbuf[5]);
1337         }
1338
1339         else if (!strncasecmp(cmdbuf,"NUOP",4)) {
1340                 cmd_nuop(&cmdbuf[5]);
1341         }
1342
1343         else if (!strncasecmp(cmdbuf,"LFLR",4)) {
1344                 cmd_lflr();
1345         }
1346
1347         else if (!strncasecmp(cmdbuf,"CFLR",4)) {
1348                 cmd_cflr(&cmdbuf[5]);
1349         }
1350
1351         else if (!strncasecmp(cmdbuf,"KFLR",4)) {
1352                 cmd_kflr(&cmdbuf[5]);
1353         }
1354
1355         else if (!strncasecmp(cmdbuf,"EFLR",4)) {
1356                 cmd_eflr(&cmdbuf[5]);
1357         }
1358
1359         else if (!strncasecmp(cmdbuf,"IDEN",4)) {
1360                 cmd_iden(&cmdbuf[5]);
1361         }
1362
1363         else if (!strncasecmp(cmdbuf,"IPGM",4)) {
1364                 cmd_ipgm(&cmdbuf[5]);
1365         }
1366
1367         else if (!strncasecmp(cmdbuf,"TERM",4)) {
1368                 cmd_term(&cmdbuf[5]);
1369         }
1370
1371         else if (!strncasecmp(cmdbuf,"DOWN",4)) {
1372                 cmd_down(&cmdbuf[5]);
1373         }
1374
1375         else if (!strncasecmp(cmdbuf,"HALT",4)) {
1376                 cmd_halt();
1377         }
1378
1379         else if (!strncasecmp(cmdbuf,"SCDN",4)) {
1380                 cmd_scdn(&cmdbuf[5]);
1381         }
1382
1383         else if (!strncasecmp(cmdbuf, "UIMG", 4)) {
1384                 cmd_uimg(&cmdbuf[5]);
1385         }
1386
1387         else if (!strncasecmp(cmdbuf, "TIME", 4)) {
1388                 cmd_time();
1389         }
1390
1391         else if (!strncasecmp(cmdbuf, "AGUP", 4)) {
1392                 cmd_agup(&cmdbuf[5]);
1393         }
1394
1395         else if (!strncasecmp(cmdbuf, "ASUP", 4)) {
1396                 cmd_asup(&cmdbuf[5]);
1397         }
1398
1399         else if (!strncasecmp(cmdbuf, "GPEX", 4)) {
1400                 cmd_gpex(&cmdbuf[5]);
1401         }
1402
1403         else if (!strncasecmp(cmdbuf, "SPEX", 4)) {
1404                 cmd_spex(&cmdbuf[5]);
1405         }
1406
1407         else if (!strncasecmp(cmdbuf, "CONF", 4)) {
1408                 cmd_conf(&cmdbuf[5]);
1409         }
1410
1411         else if (!strncasecmp(cmdbuf, "SEEN", 4)) {
1412                 cmd_seen(&cmdbuf[5]);
1413         }
1414
1415         else if (!strncasecmp(cmdbuf, "GTSN", 4)) {
1416                 cmd_gtsn(&cmdbuf[5]);
1417         }
1418
1419         else if (!strncasecmp(cmdbuf, "VIEW", 4)) {
1420                 cmd_view(&cmdbuf[5]);
1421         }
1422
1423         else if (!strncasecmp(cmdbuf, "ISME", 4)) {
1424                 cmd_isme(&cmdbuf[5]);
1425         }
1426
1427         else if (!strncasecmp(cmdbuf, "RENU", 4)) {
1428                 cmd_renu(&cmdbuf[5]);
1429         }
1430
1431         else if (!DLoader_Exec_Cmd(cmdbuf)) {
1432                 cprintf("%d Unrecognized or unsupported command.\n", ERROR + CMD_NOT_SUPPORTED);
1433         }
1434
1435         unbuffer_output();
1436
1437         /* Run any after-each-command routines registered by modules */
1438         PerformSessionHooks(EVT_CMD);
1439         CtdlThreadName(old_name);
1440 }
1441
1442
1443 /*
1444  * This loop performs all asynchronous functions.
1445  */
1446 void do_async_loop(void) {
1447         PerformSessionHooks(EVT_ASYNC);
1448 }