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