citadel/citserver.c

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