citadel/citserver.c

   1 /* $Id$ */
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4 #include <stdio.h>
   5 #include <fcntl.h>
   6 #include <signal.h>
   7 #include <time.h>
   8 #include <ctype.h>
   9 #include <string.h>
  10 #include <errno.h>
  11 #include <limits.h>
  12 #include <pthread.h>
  13 #include <syslog.h>
  14 #include <dlfcn.h>
  15 #include "citadel.h"
  16 #include "server.h"
  17 #include "sysdep_decls.h"
  18 #include "citserver.h"
  19 #include "config.h"
  20 #include "database.h"
  21 #include "housekeeping.h"
  22 #include "user_ops.h"
  23 #include "logging.h"
  24 #include "support.h"
  25 #include "msgbase.h"
  26 #include "locate_host.h"
  27 #include "room_ops.h"
  28 #include "file_ops.h"
  29 #include "dynloader.h"
  30 #include "policy.h"
  31 #include "control.h"
  32 #include "tools.h"
  33
  34 struct CitContext *ContextList = NULL;
  35 int ScheduledShutdown = 0;
  36
  37 /*
  38  * Various things that need to be initialized at startup
  39  */
  40 void master_startup(void) {
  41         lprintf(7, "Opening databases\n");
  42         open_databases();
  43
  44         lprintf(7, "Checking floor reference counts\n");
  45         check_ref_counts();
  46
  47         lprintf(7, "Creating base rooms (if necessary)\n");
  48         create_room(BASEROOM, 0, "", 0);
  49         create_room(AIDEROOM, 4, "", 0);
  50         create_room(config.c_twitroom, 0, "", 0);
  51         }
  52
  53 /*
  54  * Cleanup routine to be called when the server is shutting down.
  55  */
  56 void master_cleanup(void) {
  57         struct CleanupFunctionHook *fcn;
  58
  59         /* Cancel all running sessions */
  60         lprintf(7, "Cancelling running sessions...\n");
  61         while (ContextList != NULL) {
  62                 kill_session(ContextList->cs_pid);
  63                 }
  64
  65         /* Run any cleanup routines registered by loadable modules */
  66         for (fcn = CleanupHookTable; fcn != NULL; fcn = fcn->next) {
  67                 (*fcn->h_function_pointer)();
  68                 }
  69
  70         /* Close databases */
  71         lprintf(7, "Closing databases\n");
  72         close_databases();
  73
  74         /* Do system-dependent stuff */
  75         sysdep_master_cleanup();
  76
  77         /* Now go away. */
  78         lprintf(3, "citserver: exiting.\n");
  79         fflush(stdout); fflush(stderr);
  80         exit(0);
  81         }
  82
  83
  84 /*
  85  * Gracefully terminate the session and thread.
  86  * (This is called as a cleanup handler by the thread library.)
  87  *
  88  * All NON-system-dependent stuff is done in this function.
  89  * System-dependent session/thread cleanup is in cleanup() in sysdep.c
  90  */
  91 void cleanup_stuff(void *arg)
  92 {
  93         struct ExpressMessage *emptr;
  94
  95         lprintf(9, "cleanup_stuff() called\n");
  96
  97         lprintf(7, "Calling logout(%d)\n", CC->cs_pid);
  98         logout(CC);
  99
 100         rec_log(CL_TERMINATE,CC->curr_user);
 101         unlink(CC->temp);
 102         lprintf(3, "citserver[%3d]: ended.\n",CC->cs_pid);
 103
 104         /* Run any cleanup routines registered by loadable modules */
 105         PerformSessionHooks(EVT_STOP);
 106
 107         syslog(LOG_NOTICE,"session %d ended", CC->cs_pid);
 108
 109         /* Deallocate any unsent express messages */
 110         begin_critical_section(S_SESSION_TABLE);
 111         while (CC->FirstExpressMessage != NULL) {
 112                 emptr = CC->FirstExpressMessage;
 113                 CC->FirstExpressMessage = CC->FirstExpressMessage->next;
 114                 phree(emptr);
 115                 }
 116         end_critical_section(S_SESSION_TABLE);
 117
 118         /* Deallocate any message list we might have in memory */
 119         if (CC->msglist != NULL) phree(CC->msglist);
 120
 121         /* Now get rid of the session and context */
 122         lprintf(7, "cleanup_stuff() calling RemoveContext(%d)\n", CC->cs_pid);
 123         RemoveContext(CC);
 124
 125         /* While we still have an extra thread with no user attached to it,
 126          * take the opportunity to do some housekeeping before exiting.
 127          */
 128         do_housekeeping();
 129         }
 130
 131
 132 /*
 133  * set_wtmpsupp()  -  alter the session listing
 134  */
 135 void set_wtmpsupp(char *newtext)
 136 {
 137         strncpy(CC->cs_room,newtext,sizeof CC->cs_room);
 138         CC->cs_room[sizeof CC->cs_room - 1] = 0;
 139         time(&CC->cs_lastupdt);
 140
 141         /* Run any routines registered by loadable modules */
 142         PerformSessionHooks(EVT_NEWROOM);
 143         }
 144
 145
 146 /*
 147  * call set_wtmpsupp() with the name of the current room, modified a bit...
 148  */
 149 void set_wtmpsupp_to_current_room() {
 150         if (CC->quickroom.QRflags & QR_PRIVATE) {
 151                 set_wtmpsupp("<private room>");
 152                 }
 153         else if (CC->quickroom.QRflags & QR_MAILBOX) {
 154                 set_wtmpsupp(&CC->quickroom.QRname[11]);
 155                 }
 156         else {
 157                 set_wtmpsupp(CC->quickroom.QRname);
 158                 }
 159         }
 160
 161
 162
 163 /*
 164  * cmd_info()  -  tell the client about this server
 165  */
 166 void cmd_info(void) {
 167         cprintf("%d Server info:\n",LISTING_FOLLOWS);
 168         cprintf("%d\n",CC->cs_pid);
 169         cprintf("%s\n",config.c_nodename);
 170         cprintf("%s\n",config.c_humannode);
 171         cprintf("%s\n",config.c_fqdn);
 172         cprintf("%s\n",CITADEL);
 173         cprintf("%d\n",REV_LEVEL);
 174         cprintf("%s\n",config.c_bbs_city);
 175         cprintf("%s\n",config.c_sysadm);
 176         cprintf("%d\n",SERVER_TYPE);
 177         cprintf("%s\n",config.c_moreprompt);
 178         cprintf("1\n"); /* 1 = yes, this system supports floors */
 179         cprintf("1\n"); /* 1 = we support the extended paging options */
 180         cprintf("000\n");
 181         }
 182
 183 void cmd_rchg(char *argbuf)
 184 {
 185         char newroomname[ROOMNAMELEN];
 186
 187         extract(newroomname, argbuf, 0);
 188         if (strlen(newroomname) > 0) {
 189                 strncpy(CC->fake_roomname, newroomname, ROOMNAMELEN);
 190                 CC->fake_roomname[ROOMNAMELEN - 1] = 0;
 191                 }
 192         else {
 193                 strcpy(CC->fake_roomname, "");
 194                 }
 195         cprintf("%d OK\n", OK);
 196 }
 197
 198 void cmd_hchg(char *newhostname)
 199 {
 200    if ((newhostname) && (newhostname[0]))
 201    {
 202       bzero(CC->fake_hostname, 25);
 203       strncpy(CC->fake_hostname, newhostname, 24);
 204    }
 205    else
 206       strcpy(CC->fake_hostname, "");
 207    cprintf("%d OK\n",OK);
 208 }
 209
 210 void cmd_uchg(char *newusername)
 211 {
 212    if (CC->usersupp.axlevel < 6)
 213    {
 214       cprintf("%d You must be an Aide to use UCHG.\n",
 215                 ERROR+HIGHER_ACCESS_REQUIRED);
 216       return;
 217    }
 218    if ((newusername) && (newusername[0]))
 219    {
 220       CC->cs_flags &= ~CS_STEALTH;
 221       bzero(CC->fake_username, 32);
 222       if (strncasecmp(newusername, CC->curr_user, strlen(CC->curr_user)))
 223          strncpy(CC->fake_username, newusername, 31);
 224    }
 225    else
 226    {
 227       CC->fake_username[0] = '\0';
 228       CC->cs_flags |= CS_STEALTH;
 229    }
 230    cprintf("%d\n",OK);
 231 }
 232
 233 /*
 234  * returns an asterisk if there are any express messages waiting,
 235  * space otherwise.
 236  */
 237 char check_express(void) {
 238         if (CC->FirstExpressMessage == NULL) {
 239                 return(' ');
 240                 }
 241         else {
 242                 return('*');
 243                 }
 244         }
 245
 246 void cmd_time(void)
 247 {
 248    time_t tv;
 249
 250    tv = time(NULL);
 251
 252    cprintf("%d %ld\n", OK, tv);
 253 }
 254
 255 /*
 256  * check a hostname against the public_clients file
 257  */
 258 int is_public_client(char *where)
 259 {
 260         char buf[256];
 261         FILE *fp;
 262
 263         if (!strcasecmp(where,"localhost")) return(1);
 264         if (!strcasecmp(where,config.c_fqdn)) return(1);
 265
 266         fp = fopen("public_clients","r");
 267         if (fp == NULL) return(0);
 268
 269         while (fgets(buf,256,fp)!=NULL) {
 270                 while (isspace((buf[strlen(buf)-1])))
 271                         buf[strlen(buf)-1] = 0;
 272                 if (!strcasecmp(buf,where)) {
 273                         fclose(fp);
 274                         return(1);
 275                         }
 276                 }
 277
 278         fclose(fp);
 279         return(0);
 280         }
 281
 282
 283 /*
 284  * the client is identifying itself to the server
 285  */
 286 void cmd_iden(char *argbuf)
 287 {
 288         int dev_code;
 289         int cli_code;
 290         int rev_level;
 291         char desc[256];
 292         char from_host[256];
 293
 294         if (num_parms(argbuf)<4) {
 295                 cprintf("%d usage error\n",ERROR);
 296                 return;
 297                 }
 298
 299         dev_code = extract_int(argbuf,0);
 300         cli_code = extract_int(argbuf,1);
 301         rev_level = extract_int(argbuf,2);
 302         extract(desc,argbuf,3);
 303
 304         strncpy(from_host,config.c_fqdn,sizeof from_host);
 305         from_host[sizeof from_host - 1] = 0;
 306         if (num_parms(argbuf)>=5) extract(from_host,argbuf,4);
 307
 308         CC->cs_clientdev = dev_code;
 309         CC->cs_clienttyp = cli_code;
 310         CC->cs_clientver = rev_level;
 311         strncpy(CC->cs_clientname,desc,31);
 312         CC->cs_clientname[31] = 0;
 313
 314         if ((strlen(from_host)>0) &&
 315            (is_public_client(CC->cs_host))) {
 316                 strncpy(CC->cs_host,from_host,24);
 317                 CC->cs_host[24] = 0;
 318                 }
 319         set_wtmpsupp_to_current_room();
 320
 321         syslog(LOG_NOTICE,"client %d/%d/%01d.%02d (%s)\n",
 322                 dev_code,
 323                 cli_code,
 324                 (rev_level / 100),
 325                 (rev_level % 100),
 326                 desc);
 327                 cprintf("%d Ok\n",OK);
 328         }
 329
 330
 331 /*
 332  * enter or exit "stealth mode"
 333  */
 334 void cmd_stel(char *cmdbuf)
 335 {
 336         int requested_mode;
 337
 338         requested_mode = extract_int(cmdbuf,0);
 339         if (requested_mode !=0) requested_mode = 1;
 340
 341         if (!CC->logged_in) {
 342                 cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
 343                 return;
 344                 }
 345
 346         if (CC->usersupp.axlevel < 6) {
 347                 cprintf("%d You must be an Aide to use stealth mode.\n",
 348                         ERROR+HIGHER_ACCESS_REQUIRED);
 349                 return;
 350                 }
 351
 352         if (CC->cs_flags & CS_STEALTH) {
 353                 if (requested_mode == 0)
 354                         CC->cs_flags = CC->cs_flags-CS_STEALTH;
 355                 }
 356         else {
 357                 if (requested_mode == 1)
 358                         CC->cs_flags = CC->cs_flags|CS_STEALTH;
 359                 }
 360
 361         set_wtmpsupp_to_current_room();
 362         cprintf("%d Ok\n",OK);
 363         }
 364
 365
 366
 367
 368 /*
 369  * display system messages or help
 370  */
 371 void cmd_mesg(char *mname)
 372 {
 373         FILE *mfp;
 374         char targ[256];
 375         char buf[256];
 376         char *dirs[2];
 377
 378         extract(buf,mname,0);
 379
 380
 381         dirs[0]=mallok(64);
 382         dirs[1]=mallok(64);
 383         strcpy(dirs[0],"messages");
 384         strcpy(dirs[1],"help");
 385         mesg_locate(targ,buf,2,dirs);
 386         phree(dirs[0]);
 387         phree(dirs[1]);
 388
 389
 390         if (strlen(targ)==0) {
 391                 cprintf("%d '%s' not found.\n",ERROR,mname);
 392                 return;
 393                 }
 394
 395         mfp = fopen(targ,"r");
 396         if (mfp==NULL) {
 397                 cprintf("%d Cannot open '%s': %s\n",
 398                         ERROR,targ,strerror(errno));
 399                 return;
 400                 }
 401         cprintf("%d %s\n",LISTING_FOLLOWS,buf);
 402
 403         while (fgets(buf,255,mfp)!=NULL) {
 404                 buf[strlen(buf)-1] = 0;
 405                 do_help_subst(buf);
 406                 cprintf("%s\n",buf);
 407                 }
 408
 409         fclose(mfp);
 410         cprintf("000\n");
 411         }
 412
 413
 414 /*
 415  * enter system messages or help
 416  */
 417 void cmd_emsg(char *mname)
 418 {
 419         FILE *mfp;
 420         char targ[256];
 421         char buf[256];
 422         char *dirs[2];
 423         int a;
 424
 425         if (CC->usersupp.axlevel < 6) {
 426                 cprintf("%d You must be an Aide to edit system messages.\n",
 427                         ERROR+HIGHER_ACCESS_REQUIRED);
 428                 return;
 429                 }
 430
 431         extract(buf,mname,0);
 432         for (a=0; a<strlen(buf); ++a) {         /* security measure */
 433                 if (buf[a] == '/') buf[a] = '.';
 434                 }
 435
 436         dirs[0]=mallok(64);
 437         dirs[1]=mallok(64);
 438         strcpy(dirs[0],"messages");
 439         strcpy(dirs[1],"help");
 440         mesg_locate(targ,buf,2,dirs);
 441         phree(dirs[0]);
 442         phree(dirs[1]);
 443
 444         if (strlen(targ)==0) {
 445                 snprintf(targ, sizeof targ, "./help/%s", buf);
 446                 }
 447
 448         mfp = fopen(targ,"w");
 449         if (mfp==NULL) {
 450                 cprintf("%d Cannot open '%s': %s\n",
 451                         ERROR,targ,strerror(errno));
 452                 return;
 453                 }
 454         cprintf("%d %s\n", SEND_LISTING, targ);
 455
 456         while (client_gets(buf), strcmp(buf, "000")) {
 457                 fprintf(mfp, "%s\n", buf);
 458                 }
 459
 460         fclose(mfp);
 461         }
 462
 463
 464 /*
 465  * who's online
 466  */
 467 void cmd_rwho(void) {
 468         struct CitContext *cptr;
 469         int spoofed = 0;
 470         int aide;
 471         char un[40], room[40], host[40], flags[5];
 472
 473         aide = CC->usersupp.axlevel >= 6;
 474         cprintf("%d\n",LISTING_FOLLOWS);
 475
 476         for (cptr = ContextList; cptr != NULL; cptr = cptr->next)
 477         {
 478                 flags[0] = '\0';
 479                 spoofed = 0;
 480
 481                 if (cptr->cs_flags & CS_POSTING)
 482                    strcat(flags, "*");
 483                 else
 484                    strcat(flags, ".");
 485
 486                 if (cptr->fake_username[0])
 487                 {
 488                    strcpy(un, cptr->fake_username);
 489                    spoofed = 1;
 490                 }
 491                 else
 492                    strcpy(un, cptr->curr_user);
 493
 494                 if (cptr->fake_hostname[0])
 495                 {
 496                    strcpy(host, cptr->fake_hostname);
 497                    spoofed = 1;
 498                 }
 499                 else
 500                    strcpy(host, cptr->cs_host);
 501
 502                 if (cptr->fake_roomname[0])
 503                 {
 504                    strcpy(room, cptr->fake_roomname);
 505                    spoofed = 1;
 506                 }
 507                 else
 508                    strcpy(room, cptr->cs_room);
 509
 510
 511                 if ((aide) && (spoofed))
 512                    strcat(flags, "+");
 513
 514                 if ((cptr->cs_flags & CS_STEALTH) && (aide))
 515                    strcat(flags, "-");
 516
 517                 if (((cptr->cs_flags&CS_STEALTH)==0) || (aide))
 518                 {
 519                         cprintf("%d|%s|%s|%s|%s|%ld|%s|%s\n",
 520                                 cptr->cs_pid, un, room,
 521                                 host, cptr->cs_clientname,
 522                                 (long)(cptr->lastidle),
 523                                 cptr->lastcmdname, flags);
 524                 }
 525                 if ((spoofed) && (aide))
 526                 {
 527                         cprintf("%d|%s|%s|%s|%s|%ld|%s|%s\n",
 528                                 cptr->cs_pid, cptr->curr_user, cptr->cs_room,
 529                                 cptr->cs_host, cptr->cs_clientname,
 530                                 (long)(cptr->lastidle),
 531                                 cptr->lastcmdname, flags);
 532
 533                 }
 534         }
 535         cprintf("000\n");
 536         }
 537
 538
 539 /*
 540  * Terminate another running session
 541  */
 542 void cmd_term(char *cmdbuf)
 543 {
 544         int session_num;
 545         struct CitContext *ccptr;
 546         int session_to_kill = 0;
 547
 548         if (!CC->logged_in) {
 549                 cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
 550                 return;
 551                 }
 552
 553         if (CC->usersupp.axlevel < 6) {
 554                 cprintf("%d You must be an Aide to terminate sessions.\n",
 555                         ERROR+HIGHER_ACCESS_REQUIRED);
 556                 return;
 557                 }
 558
 559         session_num = extract_int(cmdbuf, 0);
 560         if (session_num == CC->cs_pid) {
 561                 cprintf("%d You can't kill your own session.\n", ERROR);
 562                 return;
 563                 }
 564
 565         lprintf(9, "Locating session to kill\n");
 566         begin_critical_section(S_SESSION_TABLE);
 567         for (ccptr = ContextList; ccptr != NULL; ccptr = ccptr->next) {
 568                 if (session_num == ccptr->cs_pid) {
 569                         session_to_kill = ccptr->cs_pid;
 570                         }
 571                 }
 572         end_critical_section(S_SESSION_TABLE);
 573         lprintf(9, "session_to_kill == %d\n", session_to_kill);
 574
 575         if (session_to_kill > 0) {
 576                 lprintf(9, "calling kill_session()\n");
 577                 kill_session(session_to_kill);
 578                 cprintf("%d Session terminated.\n", OK);
 579                 }
 580         else {
 581                 cprintf("%d No such session.\n", ERROR);
 582                 }
 583         }
 584
 585
 586
 587
 588
 589 /*
 590  * get the paginator prompt
 591  */
 592 void cmd_more(void) {
 593         cprintf("%d %s\n",OK,config.c_moreprompt);
 594         }
 595
 596 /*
 597  * echo
 598  */
 599 void cmd_echo(char *etext)
 600 {
 601         cprintf("%d %s\n",OK,etext);
 602         }
 603
 604
 605
 606 /*
 607  * identify as internal program
 608  */
 609 void cmd_ipgm(char *argbuf)
 610 {
 611         int secret;
 612
 613         secret = extract_int(argbuf, 0);
 614         if (secret == config.c_ipgm_secret) {
 615                 CC->internal_pgm = 1;
 616                 strcpy(CC->curr_user, "<internal program>");
 617                 CC->cs_flags = CC->cs_flags|CS_STEALTH;
 618                 cprintf("%d Authenticated as an internal program.\n",OK);
 619                 }
 620         else {
 621                 cprintf("%d Authentication failed.\n",ERROR);
 622                 }
 623         }
 624
 625
 626 /*
 627  * Shut down the server
 628  */
 629 void cmd_down(void) {
 630         if (!CC->logged_in) {
 631                 cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
 632                 return;
 633                 }
 634
 635         if (CC->usersupp.axlevel < 6) {
 636                 cprintf("%d You must be an Aide to shut down the server.\n",
 637                         ERROR+HIGHER_ACCESS_REQUIRED);
 638                 return;
 639                 }
 640
 641         cprintf("%d Shutting down server.  Goodbye.\n", OK);
 642         master_cleanup();
 643         }
 644
 645 /*
 646  * Schedule or cancel a server shutdown
 647  */
 648 void cmd_scdn(char *argbuf)
 649 {
 650         int new_state;
 651
 652         if (!CC->logged_in) {
 653                 cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
 654                 return;
 655                 }
 656
 657         if (CC->usersupp.axlevel < 6) {
 658                 cprintf("%d You must be an Aide to schedule a shutdown.\n",
 659                         ERROR+HIGHER_ACCESS_REQUIRED);
 660                 return;
 661                 }
 662
 663         new_state = extract_int(argbuf, 0);
 664         if ((new_state == 0) || (new_state == 1)) {
 665                 ScheduledShutdown = new_state;
 666                 }
 667         cprintf("%d %d\n", OK, ScheduledShutdown);
 668         }
 669
 670
 671 /*
 672  * main context loop
 673  */
 674 void *context_loop(struct CitContext *con)
 675 {
 676         char cmdbuf[256];
 677         int num_sessions;
 678
 679         /*
 680          * Wedge our way into the context table.
 681          */
 682         InitMyContext(con);
 683
 684         /*
 685          * Initialize some variables specific to our context.
 686          */
 687         CC->logged_in = 0;
 688         CC->internal_pgm = 0;
 689         CC->download_fp = NULL;
 690         CC->upload_fp = NULL;
 691         CC->cs_pid = con->client_socket;        /* not necessarily portable */
 692         CC->FirstExpressMessage = NULL;
 693         CC->msglist = NULL;
 694         CC->num_msgs = 0;
 695         time(&CC->lastcmd);
 696         time(&CC->lastidle);
 697         strcpy(CC->lastcmdname, "    ");
 698         strcpy(CC->cs_clientname, "(unknown)");
 699         strcpy(CC->curr_user,"");
 700         strcpy(CC->net_node,"");
 701         snprintf(CC->temp, sizeof CC->temp, "/tmp/CitServer.%d.%d", getpid(), CC->cs_pid);
 702         strcpy(CC->cs_room, "");
 703         strncpy(CC->cs_host, config.c_fqdn, sizeof CC->cs_host);
 704         CC->cs_host[sizeof CC->cs_host - 1] = 0;
 705         locate_host(CC->cs_host);
 706         CC->cs_flags = 0;
 707         CC->upload_type = UPL_FILE;
 708         CC->dl_is_net = 0;
 709
 710         num_sessions = session_count();
 711         CC->nologin = 0;
 712         if ((config.c_maxsessions > 0)&&(num_sessions > config.c_maxsessions))
 713                 CC->nologin = 1;
 714
 715         if (CC->nologin==1) {
 716            cprintf("%d %s: Too many users are already online (maximum is %d)\n",
 717                 ERROR+MAX_SESSIONS_EXCEEDED,
 718                 config.c_nodename,config.c_maxsessions);
 719                 }
 720         else {
 721            cprintf("%d %s Citadel/UX server ready.\n",OK,config.c_nodename);
 722                 }
 723
 724         lprintf(3, "citserver[%3d]: started.\n", CC->cs_pid);
 725
 726         /* Run any session startup routines registered by loadable modules */
 727         PerformSessionHooks(EVT_START);
 728
 729         rec_log(CL_CONNECT, "");
 730
 731         do {
 732                 time(&CC->lastcmd);
 733                 bzero(cmdbuf, sizeof cmdbuf); /* Clear it, just in case */
 734                 if (client_gets(cmdbuf) < 1) cleanup(EXIT_NULL);
 735                 lprintf(5, "citserver[%3d]: %s\n", CC->cs_pid, cmdbuf);
 736
 737                 /*
 738                  * Let other clients see the last command we executed, but
 739                  * exclude NOOP because that would be boring.
 740                  */
 741                 if (strncasecmp(cmdbuf, "NOOP", 4)) {
 742                         strcpy(CC->lastcmdname, "    ");
 743                         strncpy(CC->lastcmdname, cmdbuf, 4);
 744                         time(&CC->lastidle);
 745                         }
 746
 747                 if ((strncasecmp(cmdbuf, "ENT0", 4)) && (strncasecmp(cmdbuf, "MESG", 4)) && (strncasecmp(cmdbuf, "MSGS", 4)))
 748                 {
 749                    CC->cs_flags &= ~CS_POSTING;
 750                 }
 751
 752 /*
 753  * This loop recognizes all server commands.
 754  */
 755
 756                 if (!strncasecmp(cmdbuf,"NOOP",4)) {
 757                         cprintf("%d%cok\n",OK,check_express());
 758                         }
 759
 760                 else if (!strncasecmp(cmdbuf,"QUIT",4)) {
 761                         cprintf("%d Goodbye.\n",OK);
 762                         }
 763
 764                 else if (!strncasecmp(cmdbuf,"LOUT",4)) {
 765                         if (CC->logged_in) logout(CC);
 766                         cprintf("%d logged out.\n",OK);
 767                         }
 768
 769                 else if (!strncasecmp(cmdbuf,"USER",4)) {
 770                         cmd_user(&cmdbuf[5]);
 771                         }
 772
 773                 else if (!strncasecmp(cmdbuf,"PASS",4)) {
 774                         cmd_pass(&cmdbuf[5]);
 775                         }
 776
 777                 else if (!strncasecmp(cmdbuf,"NEWU",4)) {
 778                         cmd_newu(&cmdbuf[5]);
 779                         }
 780
 781                 else if (!strncasecmp(cmdbuf,"SETP",4)) {
 782                         cmd_setp(&cmdbuf[5]);
 783                         }
 784
 785                 else if (!strncasecmp(cmdbuf,"LRMS",4)) {
 786                         cmd_lrms(&cmdbuf[5]);
 787                         }
 788
 789                 else if (!strncasecmp(cmdbuf,"LKRA",4)) {
 790                         cmd_lkra(&cmdbuf[5]);
 791                         }
 792
 793                 else if (!strncasecmp(cmdbuf,"LKRN",4)) {
 794                         cmd_lkrn(&cmdbuf[5]);
 795                         }
 796
 797                 else if (!strncasecmp(cmdbuf,"LKRO",4)) {
 798                         cmd_lkro(&cmdbuf[5]);
 799                         }
 800
 801                 else if (!strncasecmp(cmdbuf,"LZRM",4)) {
 802                         cmd_lzrm(&cmdbuf[5]);
 803                         }
 804
 805                 else if (!strncasecmp(cmdbuf,"GETU",4)) {
 806                         cmd_getu();
 807                         }
 808
 809                 else if (!strncasecmp(cmdbuf,"SETU",4)) {
 810                         cmd_setu(&cmdbuf[5]);
 811                         }
 812
 813                 else if (!strncasecmp(cmdbuf,"GOTO",4)) {
 814                         cmd_goto(&cmdbuf[5]);
 815                         }
 816
 817                 else if (!strncasecmp(cmdbuf,"MSGS",4)) {
 818                         cmd_msgs(&cmdbuf[5]);
 819                         }
 820
 821                 else if (!strncasecmp(cmdbuf,"WHOK",4)) {
 822                         cmd_whok();
 823                         }
 824
 825                 else if (!strncasecmp(cmdbuf,"RDIR",4)) {
 826                         cmd_rdir();
 827                         }
 828
 829                 else if (!strncasecmp(cmdbuf,"MSG0",4)) {
 830                         cmd_msg0(&cmdbuf[5]);
 831                         }
 832
 833                 else if (!strncasecmp(cmdbuf,"MSG2",4)) {
 834                         cmd_msg2(&cmdbuf[5]);
 835                         }
 836
 837                 else if (!strncasecmp(cmdbuf,"MSG3",4)) {
 838                         cmd_msg3(&cmdbuf[5]);
 839                         }
 840
 841                 else if (!strncasecmp(cmdbuf,"MSG4",4)) {
 842                         cmd_msg4(&cmdbuf[5]);
 843                         }
 844
 845                 else if (!strncasecmp(cmdbuf,"INFO",4)) {
 846                         cmd_info();
 847                         }
 848
 849                 else if (!strncasecmp(cmdbuf,"SLRP",4)) {
 850                         cmd_slrp(&cmdbuf[5]);
 851                         }
 852
 853                 else if (!strncasecmp(cmdbuf,"INVT",4)) {
 854                         cmd_invt_kick(&cmdbuf[5],1);
 855                         }
 856
 857                 else if (!strncasecmp(cmdbuf,"KICK",4)) {
 858                         cmd_invt_kick(&cmdbuf[5],0);
 859                         }
 860
 861                 else if (!strncasecmp(cmdbuf,"GETR",4)) {
 862                         cmd_getr();
 863                         }
 864
 865                 else if (!strncasecmp(cmdbuf,"SETR",4)) {
 866                         cmd_setr(&cmdbuf[5]);
 867                         }
 868
 869                 else if (!strncasecmp(cmdbuf,"GETA",4)) {
 870                         cmd_geta();
 871                         }
 872
 873                 else if (!strncasecmp(cmdbuf,"SETA",4)) {
 874                         cmd_seta(&cmdbuf[5]);
 875                         }
 876
 877                 else if (!strncasecmp(cmdbuf,"ENT0",4)) {
 878                         cmd_ent0(&cmdbuf[5]);
 879                         }
 880
 881                 else if (!strncasecmp(cmdbuf,"ENT3",4)) {
 882                         cmd_ent3(&cmdbuf[5]);
 883                         }
 884
 885                 else if (!strncasecmp(cmdbuf,"RINF",4)) {
 886                         cmd_rinf();
 887                         }
 888
 889                 else if (!strncasecmp(cmdbuf,"DELE",4)) {
 890                         cmd_dele(&cmdbuf[5]);
 891                         }
 892
 893                 else if (!strncasecmp(cmdbuf,"KILL",4)) {
 894                         cmd_kill(&cmdbuf[5]);
 895                         }
 896
 897                 else if (!strncasecmp(cmdbuf,"CRE8",4)) {
 898                         cmd_cre8(&cmdbuf[5]);
 899                         }
 900
 901                 else if (!strncasecmp(cmdbuf,"MOVE",4)) {
 902                         cmd_move(&cmdbuf[5]);
 903                         }
 904
 905                 else if (!strncasecmp(cmdbuf,"FORG",4)) {
 906                         cmd_forg();
 907                         }
 908
 909                 else if (!strncasecmp(cmdbuf,"MESG",4)) {
 910                         cmd_mesg(&cmdbuf[5]);
 911                         }
 912
 913                 else if (!strncasecmp(cmdbuf,"EMSG",4)) {
 914                         cmd_emsg(&cmdbuf[5]);
 915                         }
 916
 917                 else if (!strncasecmp(cmdbuf,"GNUR",4)) {
 918                         cmd_gnur();
 919                         }
 920
 921                 else if (!strncasecmp(cmdbuf,"GREG",4)) {
 922                         cmd_greg(&cmdbuf[5]);
 923                         }
 924
 925                 else if (!strncasecmp(cmdbuf,"VALI",4)) {
 926                         cmd_vali(&cmdbuf[5]);
 927                         }
 928
 929                 else if (!strncasecmp(cmdbuf,"EINF",4)) {
 930                         cmd_einf(&cmdbuf[5]);
 931                         }
 932
 933                 else if (!strncasecmp(cmdbuf,"LIST",4)) {
 934                         cmd_list();
 935                         }
 936
 937                 else if (!strncasecmp(cmdbuf,"REGI",4)) {
 938                         cmd_regi();
 939                         }
 940
 941                 else if (!strncasecmp(cmdbuf,"CHEK",4)) {
 942                         cmd_chek();
 943                         }
 944
 945                 else if (!strncasecmp(cmdbuf,"DELF",4)) {
 946                         cmd_delf(&cmdbuf[5]);
 947                         }
 948
 949                 else if (!strncasecmp(cmdbuf,"MOVF",4)) {
 950                         cmd_movf(&cmdbuf[5]);
 951                         }
 952
 953                 else if (!strncasecmp(cmdbuf,"NETF",4)) {
 954                         cmd_netf(&cmdbuf[5]);
 955                         }
 956
 957                 else if (!strncasecmp(cmdbuf,"RWHO",4)) {
 958                         cmd_rwho();
 959                         }
 960
 961                 else if (!strncasecmp(cmdbuf,"OPEN",4)) {
 962                         cmd_open(&cmdbuf[5]);
 963                         }
 964
 965                 else if (!strncasecmp(cmdbuf,"CLOS",4)) {
 966                         cmd_clos();
 967                         }
 968
 969                 else if (!strncasecmp(cmdbuf,"UOPN",4)) {
 970                         cmd_uopn(&cmdbuf[5]);
 971                         }
 972
 973                 else if (!strncasecmp(cmdbuf,"UCLS",4)) {
 974                         cmd_ucls(&cmdbuf[5]);
 975                         }
 976
 977                 else if (!strncasecmp(cmdbuf,"READ",4)) {
 978                         cmd_read(&cmdbuf[5]);
 979                         }
 980
 981                 else if (!strncasecmp(cmdbuf,"WRIT",4)) {
 982                         cmd_writ(&cmdbuf[5]);
 983                         }
 984
 985                 else if (!strncasecmp(cmdbuf,"QUSR",4)) {
 986                         cmd_qusr(&cmdbuf[5]);
 987                         }
 988
 989                 else if (!strncasecmp(cmdbuf,"ECHO",4)) {
 990                         cmd_echo(&cmdbuf[5]);
 991                         }
 992
 993                 else if (!strncasecmp(cmdbuf,"OIMG",4)) {
 994                         cmd_oimg(&cmdbuf[5]);
 995                         }
 996
 997                 else if (!strncasecmp(cmdbuf,"MORE",4)) {
 998                         cmd_more();
 999                         }
1000
1001                 else if (!strncasecmp(cmdbuf,"NETP",4)) {
1002                         cmd_netp(&cmdbuf[5]);
1003                         }
1004
1005                 else if (!strncasecmp(cmdbuf,"NDOP",4)) {
1006                         cmd_ndop(&cmdbuf[5]);
1007                         }
1008
1009                 else if (!strncasecmp(cmdbuf,"NUOP",4)) {
1010                         cmd_nuop(&cmdbuf[5]);
1011                         }
1012
1013                 else if (!strncasecmp(cmdbuf,"LFLR",4)) {
1014                         cmd_lflr();
1015                         }
1016
1017                 else if (!strncasecmp(cmdbuf,"CFLR",4)) {
1018                         cmd_cflr(&cmdbuf[5]);
1019                         }
1020
1021                 else if (!strncasecmp(cmdbuf,"KFLR",4)) {
1022                         cmd_kflr(&cmdbuf[5]);
1023                         }
1024
1025                 else if (!strncasecmp(cmdbuf,"EFLR",4)) {
1026                         cmd_eflr(&cmdbuf[5]);
1027                         }
1028
1029                 else if (!strncasecmp(cmdbuf,"IDEN",4)) {
1030                         cmd_iden(&cmdbuf[5]);
1031                         }
1032
1033                 else if (!strncasecmp(cmdbuf,"IPGM",4)) {
1034                         cmd_ipgm(&cmdbuf[5]);
1035                         }
1036
1037                 else if (!strncasecmp(cmdbuf,"EBIO",4)) {
1038                         cmd_ebio();
1039                         }
1040
1041                 else if (!strncasecmp(cmdbuf,"RBIO",4)) {
1042                         cmd_rbio(&cmdbuf[5]);
1043                         }
1044
1045                 else if (!strncasecmp(cmdbuf,"LBIO",4)) {
1046                         cmd_lbio();
1047                         }
1048
1049                 else if (!strncasecmp(cmdbuf,"STEL",4)) {
1050                         cmd_stel(&cmdbuf[5]);
1051                         }
1052
1053                 else if (!strncasecmp(cmdbuf,"TERM",4)) {
1054                         cmd_term(&cmdbuf[5]);
1055                         }
1056
1057                 else if (!strncasecmp(cmdbuf,"DOWN",4)) {
1058                         cmd_down();
1059                         }
1060
1061                 else if (!strncasecmp(cmdbuf,"SCDN",4)) {
1062                         cmd_scdn(&cmdbuf[5]);
1063                         }
1064
1065                 else if (!strncasecmp(cmdbuf, "NSET", 4)) {
1066                         cmd_nset(&cmdbuf[5]);
1067                         }
1068
1069                 else if (!strncasecmp(cmdbuf, "UIMG", 4)) {
1070                         cmd_uimg(&cmdbuf[5]);
1071                         }
1072
1073                 else if (!strncasecmp(cmdbuf, "UCHG", 4)) {
1074                         cmd_uchg(&cmdbuf[5]);
1075                         }
1076
1077                 else if (!strncasecmp(cmdbuf, "TIME", 4)) {
1078                         cmd_time();
1079                         }
1080
1081                 else if (!strncasecmp(cmdbuf, "HCHG", 4)) {
1082                         cmd_hchg(&cmdbuf[5]);
1083                         }
1084
1085                 else if (!strncasecmp(cmdbuf, "RCHG", 4)) {
1086                         cmd_rchg(&cmdbuf[5]);
1087                         }
1088
1089                 else if (!strncasecmp(cmdbuf, "AGUP", 4)) {
1090                         cmd_agup(&cmdbuf[5]);
1091                         }
1092
1093                 else if (!strncasecmp(cmdbuf, "ASUP", 4)) {
1094                         cmd_asup(&cmdbuf[5]);
1095                         }
1096
1097                 else if (!strncasecmp(cmdbuf, "GPEX", 4)) {
1098                         cmd_gpex(&cmdbuf[5]);
1099                         }
1100
1101                 else if (!strncasecmp(cmdbuf, "SPEX", 4)) {
1102                         cmd_spex(&cmdbuf[5]);
1103                         }
1104
1105                 else if (!strncasecmp(cmdbuf, "CONF", 4)) {
1106                         cmd_conf(&cmdbuf[5]);
1107                         }
1108
1109 #ifdef DEBUG_MEMORY_LEAKS
1110                 else if (!strncasecmp(cmdbuf, "LEAK", 4)) {
1111                         dump_tracked();
1112                         }
1113 #endif
1114
1115                 else if (!DLoader_Exec_Cmd(cmdbuf))
1116                         {
1117                            cprintf("%d Unrecognized or unsupported command.\n",
1118                                     ERROR);
1119                         }
1120
1121                 } while(strncasecmp(cmdbuf, "QUIT", 4));
1122
1123         cleanup(EXIT_NORMAL);
1124         return(NULL);
1125         }