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