citadel/citserver.c

   1 /* $Id$ */
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4 #include <stdio.h>
   5 #include <fcntl.h>
   6 #include <signal.h>
   7 #include <time.h>
   8 #include <ctype.h>
   9 #include <string.h>
  10 #include <errno.h>
  11 #include <limits.h>
  12 #include <pthread.h>
  13 #include <syslog.h>
  14 #include <dlfcn.h>
  15 #include "citadel.h"
  16 #include "server.h"
  17 #include "sysdep_decls.h"
  18 #include "citserver.h"
  19 #include "config.h"
  20 #include "database.h"
  21 #include "housekeeping.h"
  22 #include "user_ops.h"
  23 #include "logging.h"
  24 #include "support.h"
  25 #include "msgbase.h"
  26 #include "locate_host.h"
  27 #include "room_ops.h"
  28 #include "file_ops.h"
  29 #include "dynloader.h"
  30 #include "policy.h"
  31 #include "control.h"
  32 #include "tools.h"
  33
  34 struct CitContext *ContextList = NULL;
  35 int ScheduledShutdown = 0;
  36
  37 /*
  38  * Various things that need to be initialized at startup
  39  */
  40 void master_startup(void) {
  41         lprintf(7, "Opening databases\n");
  42         open_databases();
  43
  44         lprintf(7, "Checking floor reference counts\n");
  45         check_ref_counts();
  46
  47         lprintf(7, "Creating base rooms (if necessary)\n");
  48         create_room(BASEROOM, 0, "", 0);
  49         create_room(AIDEROOM, 4, "", 0);
  50         create_room(config.c_twitroom, 0, "", 0);
  51         }
  52
  53 /*
  54  * Cleanup routine to be called when the server is shutting down.
  55  */
  56 void master_cleanup(void) {
  57         struct CleanupFunctionHook *fcn;
  58
  59         /* Cancel all running sessions */
  60         lprintf(7, "Cancelling running sessions...\n");
  61         while (ContextList != NULL) {
  62                 kill_session(ContextList->cs_pid);
  63                 }
  64
  65         /* Run any cleanup routines registered by loadable modules */
  66         for (fcn = CleanupHookTable; fcn != NULL; fcn = fcn->next) {
  67                 (*fcn->h_function_pointer)();
  68                 }
  69
  70         /* Close databases */
  71         lprintf(7, "Closing databases\n");
  72         close_databases();
  73
  74         /* Do system-dependent stuff */
  75         sysdep_master_cleanup();
  76
  77         /* Now go away. */
  78         lprintf(3, "citserver: exiting.\n");
  79         fflush(stdout); fflush(stderr);
  80         exit(0);
  81         }
  82
  83
  84 /*
  85  * Gracefully terminate the session and thread.
  86  * (This is called as a cleanup handler by the thread library.)
  87  *
  88  * All NON-system-dependent stuff is done in this function.
  89  * System-dependent session/thread cleanup is in cleanup() in sysdep.c
  90  */
  91 void cleanup_stuff(void *arg)
  92 {
  93         struct ExpressMessage *emptr;
  94
  95         lprintf(9, "cleanup_stuff() called\n");
  96
  97         lprintf(7, "Calling logout(%d)\n", CC->cs_pid);
  98         logout(CC);
  99
 100         rec_log(CL_TERMINATE,CC->curr_user);
 101         unlink(CC->temp);
 102         lprintf(3, "citserver[%3d]: ended.\n",CC->cs_pid);
 103
 104         /* Run any cleanup routines registered by loadable modules */
 105         PerformSessionHooks(EVT_STOP);
 106
 107         syslog(LOG_NOTICE,"session %d ended", CC->cs_pid);
 108
 109         /* Deallocate any unsent express messages */
 110         begin_critical_section(S_SESSION_TABLE);
 111         while (CC->FirstExpressMessage != NULL) {
 112                 emptr = CC->FirstExpressMessage;
 113                 CC->FirstExpressMessage = CC->FirstExpressMessage->next;
 114                 free(emptr);
 115                 }
 116         end_critical_section(S_SESSION_TABLE);
 117
 118         /* Deallocate any message list we might have in memory */
 119         if (CC->msglist != NULL) free(CC->msglist);
 120
 121         /* Now get rid of the session and context */
 122         lprintf(7, "cleanup_stuff() calling RemoveContext(%d)\n", CC->cs_pid);
 123         RemoveContext(CC);
 124
 125         /* While we still have an extra thread with no user attached to it,
 126          * take the opportunity to do some housekeeping before exiting.
 127          */
 128         do_housekeeping();
 129         }
 130
 131
 132 /*
 133  * set_wtmpsupp()  -  alter the session listing
 134  */
 135 void set_wtmpsupp(char *newtext)
 136 {
 137         strncpy(CC->cs_room,newtext,sizeof CC->cs_room);
 138         CC->cs_room[sizeof CC->cs_room - 1] = 0;
 139         time(&CC->cs_lastupdt);
 140
 141         /* Run any routines registered by loadable modules */
 142         PerformSessionHooks(EVT_NEWROOM);
 143         }
 144
 145
 146 /*
 147  * call set_wtmpsupp() with the name of the current room, modified a bit...
 148  */
 149 void set_wtmpsupp_to_current_room() {
 150         if (CC->quickroom.QRflags & QR_PRIVATE) {
 151                 set_wtmpsupp("<private room>");
 152                 }
 153         else if (CC->quickroom.QRflags & QR_MAILBOX) {
 154                 set_wtmpsupp(&CC->quickroom.QRname[11]);
 155                 }
 156         else {
 157                 set_wtmpsupp(CC->quickroom.QRname);
 158                 }
 159         }
 160
 161
 162
 163 /*
 164  * cmd_info()  -  tell the client about this server
 165  */
 166 void cmd_info(void) {
 167         cprintf("%d Server info:\n",LISTING_FOLLOWS);
 168         cprintf("%d\n",CC->cs_pid);
 169         cprintf("%s\n",config.c_nodename);
 170         cprintf("%s\n",config.c_humannode);
 171         cprintf("%s\n",config.c_fqdn);
 172         cprintf("%s\n",CITADEL);
 173         cprintf("%d\n",REV_LEVEL);
 174         cprintf("%s\n",config.c_bbs_city);
 175         cprintf("%s\n",config.c_sysadm);
 176         cprintf("%d\n",SERVER_TYPE);
 177         cprintf("%s\n",config.c_moreprompt);
 178         cprintf("1\n"); /* 1 = yes, this system supports floors */
 179         cprintf("000\n");
 180         }
 181
 182 void cmd_rchg(char *argbuf)
 183 {
 184         char newroomname[ROOMNAMELEN];
 185
 186         extract(newroomname, argbuf, 0);
 187         if (strlen(newroomname) > 0) {
 188                 strncpy(CC->fake_roomname, newroomname, ROOMNAMELEN);
 189                 CC->fake_roomname[ROOMNAMELEN - 1] = 0;
 190                 }
 191         else {
 192                 strcpy(CC->fake_roomname, "");
 193                 }
 194         cprintf("%d OK\n", OK);
 195 }
 196
 197 void cmd_hchg(char *newhostname)
 198 {
 199    if ((newhostname) && (newhostname[0]))
 200    {
 201       bzero(CC->fake_hostname, 25);
 202       strncpy(CC->fake_hostname, newhostname, 24);
 203    }
 204    else
 205       strcpy(CC->fake_hostname, "");
 206    cprintf("%d OK\n",OK);
 207 }
 208
 209 void cmd_uchg(char *newusername)
 210 {
 211    if (CC->usersupp.axlevel < 6)
 212    {
 213       cprintf("%d You must be an Aide to use UCHG.\n",
 214                 ERROR+HIGHER_ACCESS_REQUIRED);
 215       return;
 216    }
 217    if ((newusername) && (newusername[0]))
 218    {
 219       CC->cs_flags &= ~CS_STEALTH;
 220       bzero(CC->fake_username, 32);
 221       if (strncasecmp(newusername, CC->curr_user, strlen(CC->curr_user)))
 222          strncpy(CC->fake_username, newusername, 31);
 223    }
 224    else
 225    {
 226       CC->fake_username[0] = '\0';
 227       CC->cs_flags |= CS_STEALTH;
 228    }
 229    cprintf("%d\n",OK);
 230 }
 231
 232 /*
 233  * returns an asterisk if there are any express messages waiting,
 234  * space otherwise.
 235  */
 236 char check_express(void) {
 237         if (CC->FirstExpressMessage == NULL) {
 238                 return(' ');
 239                 }
 240         else {
 241                 return('*');
 242                 }
 243         }
 244
 245 void cmd_time(void)
 246 {
 247    time_t tv;
 248
 249    tv = time(NULL);
 250
 251    cprintf("%d %ld\n", OK, tv);
 252 }
 253
 254 /*
 255  * check a hostname against the public_clients file
 256  */
 257 int is_public_client(char *where)
 258 {
 259         char buf[256];
 260         FILE *fp;
 261
 262         if (!strcasecmp(where,"localhost")) return(1);
 263         if (!strcasecmp(where,config.c_fqdn)) return(1);
 264
 265         fp = fopen("public_clients","r");
 266         if (fp == NULL) return(0);
 267
 268         while (fgets(buf,256,fp)!=NULL) {
 269                 while (isspace((buf[strlen(buf)-1])))
 270                         buf[strlen(buf)-1] = 0;
 271                 if (!strcasecmp(buf,where)) {
 272                         fclose(fp);
 273                         return(1);
 274                         }
 275                 }
 276
 277         fclose(fp);
 278         return(0);
 279         }
 280
 281
 282 /*
 283  * the client is identifying itself to the server
 284  */
 285 void cmd_iden(char *argbuf)
 286 {
 287         int dev_code;
 288         int cli_code;
 289         int rev_level;
 290         char desc[256];
 291         char from_host[256];
 292
 293         if (num_parms(argbuf)<4) {
 294                 cprintf("%d usage error\n",ERROR);
 295                 return;
 296                 }
 297
 298         dev_code = extract_int(argbuf,0);
 299         cli_code = extract_int(argbuf,1);
 300         rev_level = extract_int(argbuf,2);
 301         extract(desc,argbuf,3);
 302
 303         strncpy(from_host,config.c_fqdn,sizeof from_host);
 304         from_host[sizeof from_host - 1] = 0;
 305         if (num_parms(argbuf)>=5) extract(from_host,argbuf,4);
 306
 307         CC->cs_clientdev = dev_code;
 308         CC->cs_clienttyp = cli_code;
 309         CC->cs_clientver = rev_level;
 310         strncpy(CC->cs_clientname,desc,31);
 311         CC->cs_clientname[31] = 0;
 312
 313         if ((strlen(from_host)>0) &&
 314            (is_public_client(CC->cs_host))) {
 315                 strncpy(CC->cs_host,from_host,24);
 316                 CC->cs_host[24] = 0;
 317                 }
 318         set_wtmpsupp_to_current_room();
 319
 320         syslog(LOG_NOTICE,"client %d/%d/%01d.%02d (%s)\n",
 321                 dev_code,
 322                 cli_code,
 323                 (rev_level / 100),
 324                 (rev_level % 100),
 325                 desc);
 326                 cprintf("%d Ok\n",OK);
 327         }
 328
 329
 330 /*
 331  * enter or exit "stealth mode"
 332  */
 333 void cmd_stel(char *cmdbuf)
 334 {
 335         int requested_mode;
 336
 337         requested_mode = extract_int(cmdbuf,0);
 338         if (requested_mode !=0) requested_mode = 1;
 339
 340         if (!CC->logged_in) {
 341                 cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
 342                 return;
 343                 }
 344
 345         if (CC->usersupp.axlevel < 6) {
 346                 cprintf("%d You must be an Aide to use stealth mode.\n",
 347                         ERROR+HIGHER_ACCESS_REQUIRED);
 348                 return;
 349                 }
 350
 351         if (CC->cs_flags & CS_STEALTH) {
 352                 if (requested_mode == 0)
 353                         CC->cs_flags = CC->cs_flags-CS_STEALTH;
 354                 }
 355         else {
 356                 if (requested_mode == 1)
 357                         CC->cs_flags = CC->cs_flags|CS_STEALTH;
 358                 }
 359
 360         set_wtmpsupp_to_current_room();
 361         cprintf("%d Ok\n",OK);
 362         }
 363
 364
 365
 366
 367 /*
 368  * display system messages or help
 369  */
 370 void cmd_mesg(char *mname)
 371 {
 372         FILE *mfp;
 373         char targ[256];
 374         char buf[256];
 375         char *dirs[2];
 376
 377         extract(buf,mname,0);
 378
 379
 380         dirs[0]=malloc(64);
 381         dirs[1]=malloc(64);
 382         strcpy(dirs[0],"messages");
 383         strcpy(dirs[1],"help");
 384         mesg_locate(targ,buf,2,dirs);
 385         free(dirs[0]);
 386         free(dirs[1]);
 387
 388
 389         if (strlen(targ)==0) {
 390                 cprintf("%d '%s' not found.\n",ERROR,mname);
 391                 return;
 392                 }
 393
 394         mfp = fopen(targ,"r");
 395         if (mfp==NULL) {
 396                 cprintf("%d Cannot open '%s': %s\n",
 397                         ERROR,targ,strerror(errno));
 398                 return;
 399                 }
 400         cprintf("%d %s\n",LISTING_FOLLOWS,buf);
 401
 402         while (fgets(buf,255,mfp)!=NULL) {
 403                 buf[strlen(buf)-1] = 0;
 404                 do_help_subst(buf);
 405                 cprintf("%s\n",buf);
 406                 }
 407
 408         fclose(mfp);
 409         cprintf("000\n");
 410         }
 411
 412
 413 /*
 414  * enter system messages or help
 415  */
 416 void cmd_emsg(char *mname)
 417 {
 418         FILE *mfp;
 419         char targ[256];
 420         char buf[256];
 421         char *dirs[2];
 422         int a;
 423
 424         if (CC->usersupp.axlevel < 6) {
 425                 cprintf("%d You must be an Aide to edit system messages.\n",
 426                         ERROR+HIGHER_ACCESS_REQUIRED);
 427                 return;
 428                 }
 429
 430         extract(buf,mname,0);
 431         for (a=0; a<strlen(buf); ++a) {         /* security measure */
 432                 if (buf[a] == '/') buf[a] = '.';
 433                 }
 434
 435         dirs[0]=malloc(64);
 436         dirs[1]=malloc(64);
 437         strcpy(dirs[0],"messages");
 438         strcpy(dirs[1],"help");
 439         mesg_locate(targ,buf,2,dirs);
 440         free(dirs[0]);
 441         free(dirs[1]);
 442
 443         if (strlen(targ)==0) {
 444                 snprintf(targ, sizeof targ, "./help/%s", buf);
 445                 }
 446
 447         mfp = fopen(targ,"w");
 448         if (mfp==NULL) {
 449                 cprintf("%d Cannot open '%s': %s\n",
 450                         ERROR,targ,strerror(errno));
 451                 return;
 452                 }
 453         cprintf("%d %s\n", SEND_LISTING, targ);
 454
 455         while (client_gets(buf), strcmp(buf, "000")) {
 456                 fprintf(mfp, "%s\n", buf);
 457                 }
 458
 459         fclose(mfp);
 460         }
 461
 462
 463 /*
 464  * who's online
 465  */
 466 void cmd_rwho(void) {
 467         struct CitContext *cptr;
 468         int spoofed = 0;
 469         int aide;
 470         char un[40], room[40], host[40], flags[5];
 471
 472         aide = CC->usersupp.axlevel >= 6;
 473         cprintf("%d\n",LISTING_FOLLOWS);
 474
 475         for (cptr = ContextList; cptr != NULL; cptr = cptr->next)
 476         {
 477                 flags[0] = '\0';
 478                 spoofed = 0;
 479
 480                 if (cptr->cs_flags & CS_POSTING)
 481                    strcat(flags, "*");
 482                 else
 483                    strcat(flags, ".");
 484
 485                 if (cptr->fake_username[0])
 486                 {
 487                    strcpy(un, cptr->fake_username);
 488                    spoofed = 1;
 489                 }
 490                 else
 491                    strcpy(un, cptr->curr_user);
 492
 493                 if (cptr->fake_hostname[0])
 494                 {
 495                    strcpy(host, cptr->fake_hostname);
 496                    spoofed = 1;
 497                 }
 498                 else
 499                    strcpy(host, cptr->cs_host);
 500
 501                 if (cptr->fake_roomname[0])
 502                 {
 503                    strcpy(room, cptr->fake_roomname);
 504                    spoofed = 1;
 505                 }
 506                 else
 507                    strcpy(room, cptr->cs_room);
 508
 509
 510                 if ((aide) && (spoofed))
 511                    strcat(flags, "+");
 512
 513                 if ((cptr->cs_flags & CS_STEALTH) && (aide))
 514                    strcat(flags, "-");
 515
 516                 if (((cptr->cs_flags&CS_STEALTH)==0) || (aide))
 517                 {
 518                         cprintf("%d|%s|%s|%s|%s|%ld|%s|%s\n",
 519                                 cptr->cs_pid, un, room,
 520                                 host, cptr->cs_clientname,
 521                                 (long)(cptr->lastidle),
 522                                 cptr->lastcmdname, flags);
 523                 }
 524                 if ((spoofed) && (aide))
 525                 {
 526                         cprintf("%d|%s|%s|%s|%s|%ld|%s|%s\n",
 527                                 cptr->cs_pid, cptr->curr_user, cptr->cs_room,
 528                                 cptr->cs_host, cptr->cs_clientname,
 529                                 (long)(cptr->lastidle),
 530                                 cptr->lastcmdname, flags);
 531
 532                 }
 533         }
 534         cprintf("000\n");
 535         }
 536
 537
 538 /*
 539  * Terminate another running session
 540  */
 541 void cmd_term(char *cmdbuf)
 542 {
 543         int session_num;
 544         struct CitContext *ccptr;
 545         int session_to_kill = 0;
 546
 547         if (!CC->logged_in) {
 548                 cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
 549                 return;
 550                 }
 551
 552         if (CC->usersupp.axlevel < 6) {
 553                 cprintf("%d You must be an Aide to terminate sessions.\n",
 554                         ERROR+HIGHER_ACCESS_REQUIRED);
 555                 return;
 556                 }
 557
 558         session_num = extract_int(cmdbuf, 0);
 559         if (session_num == CC->cs_pid) {
 560                 cprintf("%d You can't kill your own session.\n", ERROR);
 561                 return;
 562                 }
 563
 564         lprintf(9, "Locating session to kill\n");
 565         begin_critical_section(S_SESSION_TABLE);
 566         for (ccptr = ContextList; ccptr != NULL; ccptr = ccptr->next) {
 567                 if (session_num == ccptr->cs_pid) {
 568                         session_to_kill = ccptr->cs_pid;
 569                         }
 570                 }
 571         end_critical_section(S_SESSION_TABLE);
 572         lprintf(9, "session_to_kill == %d\n", session_to_kill);
 573
 574         if (session_to_kill > 0) {
 575                 kill_session(ccptr->cs_pid);
 576                 cprintf("%d Session terminated.\n", OK);
 577                 }
 578         else {
 579                 cprintf("%d No such session.\n", ERROR);
 580                 }
 581         }
 582
 583
 584
 585
 586
 587 /*
 588  * get the paginator prompt
 589  */
 590 void cmd_more(void) {
 591         cprintf("%d %s\n",OK,config.c_moreprompt);
 592         }
 593
 594 /*
 595  * echo
 596  */
 597 void cmd_echo(char *etext)
 598 {
 599         cprintf("%d %s\n",OK,etext);
 600         }
 601
 602
 603
 604 /*
 605  * identify as internal program
 606  */
 607 void cmd_ipgm(char *argbuf)
 608 {
 609         int secret;
 610
 611         secret = extract_int(argbuf, 0);
 612         if (secret == config.c_ipgm_secret) {
 613                 CC->internal_pgm = 1;
 614                 strcpy(CC->curr_user, "<internal program>");
 615                 CC->cs_flags = CC->cs_flags|CS_STEALTH;
 616                 cprintf("%d Authenticated as an internal program.\n",OK);
 617                 }
 618         else {
 619                 cprintf("%d Authentication failed.\n",ERROR);
 620                 }
 621         }
 622
 623
 624 /*
 625  * Shut down the server
 626  */
 627 void cmd_down(void) {
 628         if (!CC->logged_in) {
 629                 cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
 630                 return;
 631                 }
 632
 633         if (CC->usersupp.axlevel < 6) {
 634                 cprintf("%d You must be an Aide to shut down the server.\n",
 635                         ERROR+HIGHER_ACCESS_REQUIRED);
 636                 return;
 637                 }
 638
 639         cprintf("%d Shutting down server.  Goodbye.\n", OK);
 640         master_cleanup();
 641         }
 642
 643 /*
 644  * Schedule or cancel a server shutdown
 645  */
 646 void cmd_scdn(char *argbuf)
 647 {
 648         int new_state;
 649
 650         if (!CC->logged_in) {
 651                 cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
 652                 return;
 653                 }
 654
 655         if (CC->usersupp.axlevel < 6) {
 656                 cprintf("%d You must be an Aide to schedule a shutdown.\n",
 657                         ERROR+HIGHER_ACCESS_REQUIRED);
 658                 return;
 659                 }
 660
 661         new_state = extract_int(argbuf, 0);
 662         if ((new_state == 0) || (new_state == 1)) {
 663                 ScheduledShutdown = new_state;
 664                 }
 665         cprintf("%d %d\n", OK, ScheduledShutdown);
 666         }
 667
 668
 669 /*
 670  * main context loop
 671  */
 672 void *context_loop(struct CitContext *con)
 673 {
 674         char cmdbuf[256];
 675         int num_sessions;
 676
 677         /*
 678          * Wedge our way into the context table.
 679          */
 680         InitMyContext(con);
 681
 682         /*
 683          * Initialize some variables specific to our context.
 684          */
 685         CC->logged_in = 0;
 686         CC->internal_pgm = 0;
 687         CC->download_fp = NULL;
 688         CC->upload_fp = NULL;
 689         CC->cs_pid = con->client_socket;        /* not necessarily portable */
 690         CC->FirstExpressMessage = NULL;
 691         CC->msglist = NULL;
 692         CC->num_msgs = 0;
 693         time(&CC->lastcmd);
 694         time(&CC->lastidle);
 695         strcpy(CC->lastcmdname, "    ");
 696         strcpy(CC->cs_clientname, "(unknown)");
 697         strcpy(CC->curr_user,"");
 698         strcpy(CC->net_node,"");
 699         snprintf(CC->temp, sizeof CC->temp, "/tmp/CitServer.%d.%d", getpid(), CC->cs_pid);
 700         strcpy(CC->cs_room, "");
 701         strncpy(CC->cs_host, config.c_fqdn, sizeof CC->cs_host);
 702         CC->cs_host[sizeof CC->cs_host - 1] = 0;
 703         locate_host(CC->cs_host);
 704         CC->cs_flags = 0;
 705         CC->upload_type = UPL_FILE;
 706         CC->dl_is_net = 0;
 707
 708         num_sessions = session_count();
 709         CC->nologin = 0;
 710         if ((config.c_maxsessions > 0)&&(num_sessions > config.c_maxsessions))
 711                 CC->nologin = 1;
 712
 713         if (CC->nologin==1) {
 714            cprintf("%d %s: Too many users are already online (maximum is %d)\n",
 715                 ERROR+MAX_SESSIONS_EXCEEDED,
 716                 config.c_nodename,config.c_maxsessions);
 717                 }
 718         else {
 719            cprintf("%d %s Citadel/UX server ready.\n",OK,config.c_nodename);
 720                 }
 721
 722         lprintf(3, "citserver[%3d]: started.\n", CC->cs_pid);
 723
 724         /* Run any session startup routines registered by loadable modules */
 725         PerformSessionHooks(EVT_START);
 726
 727         rec_log(CL_CONNECT, "");
 728
 729         do {
 730                 time(&CC->lastcmd);
 731                 bzero(cmdbuf, sizeof cmdbuf); /* Clear it, just in case */
 732                 if (client_gets(cmdbuf) < 1) cleanup(EXIT_NULL);
 733                 lprintf(5, "citserver[%3d]: %s\n", CC->cs_pid, cmdbuf);
 734
 735                 /*
 736                  * Let other clients see the last command we executed, but
 737                  * exclude NOOP because that would be boring.
 738                  */
 739                 if (strncasecmp(cmdbuf, "NOOP", 4)) {
 740                         strcpy(CC->lastcmdname, "    ");
 741                         strncpy(CC->lastcmdname, cmdbuf, 4);
 742                         time(&CC->lastidle);
 743                         }
 744
 745                 if ((strncasecmp(cmdbuf, "ENT0", 4)) && (strncasecmp(cmdbuf, "MESG", 4)) && (strncasecmp(cmdbuf, "MSGS", 4)))
 746                 {
 747                    CC->cs_flags &= ~CS_POSTING;
 748                 }
 749
 750 /*
 751  * This loop recognizes all server commands.
 752  */
 753
 754                 if (!strncasecmp(cmdbuf,"NOOP",4)) {
 755                         cprintf("%d%cok\n",OK,check_express());
 756                         }
 757
 758                 else if (!strncasecmp(cmdbuf,"QUIT",4)) {
 759                         cprintf("%d Goodbye.\n",OK);
 760                         }
 761
 762                 else if (!strncasecmp(cmdbuf,"LOUT",4)) {
 763                         if (CC->logged_in) logout(CC);
 764                         cprintf("%d logged out.\n",OK);
 765                         }
 766
 767                 else if (!strncasecmp(cmdbuf,"USER",4)) {
 768                         cmd_user(&cmdbuf[5]);
 769                         }
 770
 771                 else if (!strncasecmp(cmdbuf,"PASS",4)) {
 772                         cmd_pass(&cmdbuf[5]);
 773                         }
 774
 775                 else if (!strncasecmp(cmdbuf,"NEWU",4)) {
 776                         cmd_newu(&cmdbuf[5]);
 777                         }
 778
 779                 else if (!strncasecmp(cmdbuf,"SETP",4)) {
 780                         cmd_setp(&cmdbuf[5]);
 781                         }
 782
 783                 else if (!strncasecmp(cmdbuf,"LRMS",4)) {
 784                         cmd_lrms(&cmdbuf[5]);
 785                         }
 786
 787                 else if (!strncasecmp(cmdbuf,"LKRA",4)) {
 788                         cmd_lkra(&cmdbuf[5]);
 789                         }
 790
 791                 else if (!strncasecmp(cmdbuf,"LKRN",4)) {
 792                         cmd_lkrn(&cmdbuf[5]);
 793                         }
 794
 795                 else if (!strncasecmp(cmdbuf,"LKRO",4)) {
 796                         cmd_lkro(&cmdbuf[5]);
 797                         }
 798
 799                 else if (!strncasecmp(cmdbuf,"LZRM",4)) {
 800                         cmd_lzrm(&cmdbuf[5]);
 801                         }
 802
 803                 else if (!strncasecmp(cmdbuf,"GETU",4)) {
 804                         cmd_getu();
 805                         }
 806
 807                 else if (!strncasecmp(cmdbuf,"SETU",4)) {
 808                         cmd_setu(&cmdbuf[5]);
 809                         }
 810
 811                 else if (!strncasecmp(cmdbuf,"GOTO",4)) {
 812                         cmd_goto(&cmdbuf[5]);
 813                         }
 814
 815                 else if (!strncasecmp(cmdbuf,"MSGS",4)) {
 816                         cmd_msgs(&cmdbuf[5]);
 817                         }
 818
 819                 else if (!strncasecmp(cmdbuf,"WHOK",4)) {
 820                         cmd_whok();
 821                         }
 822
 823                 else if (!strncasecmp(cmdbuf,"RDIR",4)) {
 824                         cmd_rdir();
 825                         }
 826
 827                 else if (!strncasecmp(cmdbuf,"MSG0",4)) {
 828                         cmd_msg0(&cmdbuf[5]);
 829                         }
 830
 831                 else if (!strncasecmp(cmdbuf,"MSG2",4)) {
 832                         cmd_msg2(&cmdbuf[5]);
 833                         }
 834
 835                 else if (!strncasecmp(cmdbuf,"MSG3",4)) {
 836                         cmd_msg3(&cmdbuf[5]);
 837                         }
 838
 839                 else if (!strncasecmp(cmdbuf,"INFO",4)) {
 840                         cmd_info();
 841                         }
 842
 843                 else if (!strncasecmp(cmdbuf,"SLRP",4)) {
 844                         cmd_slrp(&cmdbuf[5]);
 845                         }
 846
 847                 else if (!strncasecmp(cmdbuf,"INVT",4)) {
 848                         cmd_invt_kick(&cmdbuf[5],1);
 849                         }
 850
 851                 else if (!strncasecmp(cmdbuf,"KICK",4)) {
 852                         cmd_invt_kick(&cmdbuf[5],0);
 853                         }
 854
 855                 else if (!strncasecmp(cmdbuf,"GETR",4)) {
 856                         cmd_getr();
 857                         }
 858
 859                 else if (!strncasecmp(cmdbuf,"SETR",4)) {
 860                         cmd_setr(&cmdbuf[5]);
 861                         }
 862
 863                 else if (!strncasecmp(cmdbuf,"GETA",4)) {
 864                         cmd_geta();
 865                         }
 866
 867                 else if (!strncasecmp(cmdbuf,"SETA",4)) {
 868                         cmd_seta(&cmdbuf[5]);
 869                         }
 870
 871                 else if (!strncasecmp(cmdbuf,"ENT0",4)) {
 872                         cmd_ent0(&cmdbuf[5]);
 873                         }
 874
 875                 else if (!strncasecmp(cmdbuf,"ENT3",4)) {
 876                         cmd_ent3(&cmdbuf[5]);
 877                         }
 878
 879                 else if (!strncasecmp(cmdbuf,"RINF",4)) {
 880                         cmd_rinf();
 881                         }
 882
 883                 else if (!strncasecmp(cmdbuf,"DELE",4)) {
 884                         cmd_dele(&cmdbuf[5]);
 885                         }
 886
 887                 else if (!strncasecmp(cmdbuf,"KILL",4)) {
 888                         cmd_kill(&cmdbuf[5]);
 889                         }
 890
 891                 else if (!strncasecmp(cmdbuf,"CRE8",4)) {
 892                         cmd_cre8(&cmdbuf[5]);
 893                         }
 894
 895                 else if (!strncasecmp(cmdbuf,"MOVE",4)) {
 896                         cmd_move(&cmdbuf[5]);
 897                         }
 898
 899                 else if (!strncasecmp(cmdbuf,"FORG",4)) {
 900                         cmd_forg();
 901                         }
 902
 903                 else if (!strncasecmp(cmdbuf,"MESG",4)) {
 904                         cmd_mesg(&cmdbuf[5]);
 905                         }
 906
 907                 else if (!strncasecmp(cmdbuf,"EMSG",4)) {
 908                         cmd_emsg(&cmdbuf[5]);
 909                         }
 910
 911                 else if (!strncasecmp(cmdbuf,"GNUR",4)) {
 912                         cmd_gnur();
 913                         }
 914
 915                 else if (!strncasecmp(cmdbuf,"GREG",4)) {
 916                         cmd_greg(&cmdbuf[5]);
 917                         }
 918
 919                 else if (!strncasecmp(cmdbuf,"VALI",4)) {
 920                         cmd_vali(&cmdbuf[5]);
 921                         }
 922
 923                 else if (!strncasecmp(cmdbuf,"EINF",4)) {
 924                         cmd_einf(&cmdbuf[5]);
 925                         }
 926
 927                 else if (!strncasecmp(cmdbuf,"LIST",4)) {
 928                         cmd_list();
 929                         }
 930
 931                 else if (!strncasecmp(cmdbuf,"REGI",4)) {
 932                         cmd_regi();
 933                         }
 934
 935                 else if (!strncasecmp(cmdbuf,"CHEK",4)) {
 936                         cmd_chek();
 937                         }
 938
 939                 else if (!strncasecmp(cmdbuf,"DELF",4)) {
 940                         cmd_delf(&cmdbuf[5]);
 941                         }
 942
 943                 else if (!strncasecmp(cmdbuf,"MOVF",4)) {
 944                         cmd_movf(&cmdbuf[5]);
 945                         }
 946
 947                 else if (!strncasecmp(cmdbuf,"NETF",4)) {
 948                         cmd_netf(&cmdbuf[5]);
 949                         }
 950
 951                 else if (!strncasecmp(cmdbuf,"RWHO",4)) {
 952                         cmd_rwho();
 953                         }
 954
 955                 else if (!strncasecmp(cmdbuf,"OPEN",4)) {
 956                         cmd_open(&cmdbuf[5]);
 957                         }
 958
 959                 else if (!strncasecmp(cmdbuf,"CLOS",4)) {
 960                         cmd_clos();
 961                         }
 962
 963                 else if (!strncasecmp(cmdbuf,"UOPN",4)) {
 964                         cmd_uopn(&cmdbuf[5]);
 965                         }
 966
 967                 else if (!strncasecmp(cmdbuf,"UCLS",4)) {
 968                         cmd_ucls(&cmdbuf[5]);
 969                         }
 970
 971                 else if (!strncasecmp(cmdbuf,"READ",4)) {
 972                         cmd_read(&cmdbuf[5]);
 973                         }
 974
 975                 else if (!strncasecmp(cmdbuf,"WRIT",4)) {
 976                         cmd_writ(&cmdbuf[5]);
 977                         }
 978
 979                 else if (!strncasecmp(cmdbuf,"QUSR",4)) {
 980                         cmd_qusr(&cmdbuf[5]);
 981                         }
 982
 983                 else if (!strncasecmp(cmdbuf,"ECHO",4)) {
 984                         cmd_echo(&cmdbuf[5]);
 985                         }
 986
 987                 else if (!strncasecmp(cmdbuf,"OIMG",4)) {
 988                         cmd_oimg(&cmdbuf[5]);
 989                         }
 990
 991                 else if (!strncasecmp(cmdbuf,"MORE",4)) {
 992                         cmd_more();
 993                         }
 994
 995                 else if (!strncasecmp(cmdbuf,"NETP",4)) {
 996                         cmd_netp(&cmdbuf[5]);
 997                         }
 998
 999                 else if (!strncasecmp(cmdbuf,"NDOP",4)) {
1000                         cmd_ndop(&cmdbuf[5]);
1001                         }
1002
1003                 else if (!strncasecmp(cmdbuf,"NUOP",4)) {
1004                         cmd_nuop(&cmdbuf[5]);
1005                         }
1006
1007                 else if (!strncasecmp(cmdbuf,"LFLR",4)) {
1008                         cmd_lflr();
1009                         }
1010
1011                 else if (!strncasecmp(cmdbuf,"CFLR",4)) {
1012                         cmd_cflr(&cmdbuf[5]);
1013                         }
1014
1015                 else if (!strncasecmp(cmdbuf,"KFLR",4)) {
1016                         cmd_kflr(&cmdbuf[5]);
1017                         }
1018
1019                 else if (!strncasecmp(cmdbuf,"EFLR",4)) {
1020                         cmd_eflr(&cmdbuf[5]);
1021                         }
1022
1023                 else if (!strncasecmp(cmdbuf,"IDEN",4)) {
1024                         cmd_iden(&cmdbuf[5]);
1025                         }
1026
1027                 else if (!strncasecmp(cmdbuf,"IPGM",4)) {
1028                         cmd_ipgm(&cmdbuf[5]);
1029                         }
1030
1031                 else if (!strncasecmp(cmdbuf,"EBIO",4)) {
1032                         cmd_ebio();
1033                         }
1034
1035                 else if (!strncasecmp(cmdbuf,"RBIO",4)) {
1036                         cmd_rbio(&cmdbuf[5]);
1037                         }
1038
1039                 else if (!strncasecmp(cmdbuf,"LBIO",4)) {
1040                         cmd_lbio();
1041                         }
1042
1043                 else if (!strncasecmp(cmdbuf,"STEL",4)) {
1044                         cmd_stel(&cmdbuf[5]);
1045                         }
1046
1047                 else if (!strncasecmp(cmdbuf,"TERM",4)) {
1048                         cmd_term(&cmdbuf[5]);
1049                         }
1050
1051                 else if (!strncasecmp(cmdbuf,"DOWN",4)) {
1052                         cmd_down();
1053                         }
1054
1055                 else if (!strncasecmp(cmdbuf,"SCDN",4)) {
1056                         cmd_scdn(&cmdbuf[5]);
1057                         }
1058
1059                 else if (!strncasecmp(cmdbuf, "NSET", 4)) {
1060                         cmd_nset(&cmdbuf[5]);
1061                         }
1062
1063                 else if (!strncasecmp(cmdbuf, "UIMG", 4)) {
1064                         cmd_uimg(&cmdbuf[5]);
1065                         }
1066
1067                 else if (!strncasecmp(cmdbuf, "UCHG", 4)) {
1068                         cmd_uchg(&cmdbuf[5]);
1069                         }
1070
1071                 else if (!strncasecmp(cmdbuf, "TIME", 4)) {
1072                         cmd_time();
1073                         }
1074
1075                 else if (!strncasecmp(cmdbuf, "HCHG", 4)) {
1076                         cmd_hchg(&cmdbuf[5]);
1077                         }
1078
1079                 else if (!strncasecmp(cmdbuf, "RCHG", 4)) {
1080                         cmd_rchg(&cmdbuf[5]);
1081                         }
1082
1083                 else if (!strncasecmp(cmdbuf, "AGUP", 4)) {
1084                         cmd_agup(&cmdbuf[5]);
1085                         }
1086
1087                 else if (!strncasecmp(cmdbuf, "ASUP", 4)) {
1088                         cmd_asup(&cmdbuf[5]);
1089                         }
1090
1091                 else if (!strncasecmp(cmdbuf, "GPEX", 4)) {
1092                         cmd_gpex(&cmdbuf[5]);
1093                         }
1094
1095                 else if (!strncasecmp(cmdbuf, "SPEX", 4)) {
1096                         cmd_spex(&cmdbuf[5]);
1097                         }
1098
1099                 else if (!strncasecmp(cmdbuf, "CONF", 4)) {
1100                         cmd_conf(&cmdbuf[5]);
1101                         }
1102
1103                 else if (!DLoader_Exec_Cmd(cmdbuf))
1104                         {
1105                            cprintf("%d Unrecognized or unsupported command.\n",
1106                                     ERROR);
1107                         }
1108
1109                 } while(strncasecmp(cmdbuf, "QUIT", 4));
1110
1111         cleanup(EXIT_NORMAL);
1112         return(NULL);
1113         }