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
  94         lprintf(9, "cleanup_stuff() called\n");
  95
  96         lprintf(7, "Calling logout(%d)\n", CC->cs_pid);
  97         logout(CC);
  98
  99         rec_log(CL_TERMINATE,CC->curr_user);
 100         unlink(CC->temp);
 101         lprintf(3, "citserver[%3d]: ended.\n",CC->cs_pid);
 102
 103         /* Run any cleanup routines registered by loadable modules */
 104         PerformSessionHooks(EVT_STOP);
 105
 106         syslog(LOG_NOTICE,"session %d ended", CC->cs_pid);
 107
 108         /* Deallocate any unsent express messages */
 109         begin_critical_section(S_SESSION_TABLE);
 110         if (CC->ExpressMessages != NULL) phree(CC->ExpressMessages);
 111         end_critical_section(S_SESSION_TABLE);
 112
 113         /* Deallocate any message list we might have in memory */
 114         if (CC->msglist != NULL) phree(CC->msglist);
 115
 116         /* Now get rid of the session and context */
 117         lprintf(7, "cleanup_stuff() calling RemoveContext(%d)\n", CC->cs_pid);
 118         RemoveContext(CC);
 119
 120         /* While we still have an extra thread with no user attached to it,
 121          * take the opportunity to do some housekeeping before exiting.
 122          */
 123         do_housekeeping();
 124         }
 125
 126
 127 /*
 128  * set_wtmpsupp()  -  alter the session listing
 129  */
 130 void set_wtmpsupp(char *newtext)
 131 {
 132         strncpy(CC->cs_room,newtext,sizeof CC->cs_room);
 133         CC->cs_room[sizeof CC->cs_room - 1] = 0;
 134         time(&CC->cs_lastupdt);
 135
 136         /* Run any routines registered by loadable modules */
 137         PerformSessionHooks(EVT_NEWROOM);
 138         }
 139
 140
 141 /*
 142  * call set_wtmpsupp() with the name of the current room, modified a bit...
 143  */
 144 void set_wtmpsupp_to_current_room() {
 145         if (CC->quickroom.QRflags & QR_PRIVATE) {
 146                 set_wtmpsupp("<private room>");
 147                 }
 148         else if (CC->quickroom.QRflags & QR_MAILBOX) {
 149                 set_wtmpsupp(&CC->quickroom.QRname[11]);
 150                 }
 151         else {
 152                 set_wtmpsupp(CC->quickroom.QRname);
 153                 }
 154         }
 155
 156
 157
 158 /*
 159  * cmd_info()  -  tell the client about this server
 160  */
 161 void cmd_info(void) {
 162         cprintf("%d Server info:\n",LISTING_FOLLOWS);
 163         cprintf("%d\n",CC->cs_pid);
 164         cprintf("%s\n",config.c_nodename);
 165         cprintf("%s\n",config.c_humannode);
 166         cprintf("%s\n",config.c_fqdn);
 167         cprintf("%s\n",CITADEL);
 168         cprintf("%d\n",REV_LEVEL);
 169         cprintf("%s\n",config.c_bbs_city);
 170         cprintf("%s\n",config.c_sysadm);
 171         cprintf("%d\n",SERVER_TYPE);
 172         cprintf("%s\n",config.c_moreprompt);
 173         cprintf("1\n"); /* 1 = yes, this system supports floors */
 174         cprintf("1\n"); /* 1 = we support the extended paging options */
 175         cprintf("000\n");
 176         }
 177
 178 void cmd_rchg(char *argbuf)
 179 {
 180         char newroomname[256]; /* set to 256 to prevent buffer overruns <dme>*/
 181
 182         extract(newroomname, argbuf, 0);
 183         newroomname[ROOMNAMELEN] = 0;
 184         if (strlen(newroomname) > 0) {
 185                 strncpy(CC->fake_roomname, newroomname, ROOMNAMELEN);
 186                 CC->fake_roomname[ROOMNAMELEN - 1] = 0;
 187                 }
 188         else {
 189                 strcpy(CC->fake_roomname, "");
 190                 }
 191         cprintf("%d OK\n", OK);
 192 }
 193
 194 void cmd_hchg(char *newhostname)
 195 {
 196    if ((newhostname) && (newhostname[0]))
 197    {
 198       memset(CC->fake_hostname, 0, 25);
 199       strncpy(CC->fake_hostname, newhostname, 24);
 200    }
 201    else
 202       strcpy(CC->fake_hostname, "");
 203    cprintf("%d OK\n",OK);
 204 }
 205
 206 void cmd_uchg(char *newusername)
 207 {
 208    if (CC->usersupp.axlevel < 6)
 209    {
 210       cprintf("%d You must be an Aide to use UCHG.\n",
 211                 ERROR+HIGHER_ACCESS_REQUIRED);
 212       return;
 213    }
 214    if ((newusername) && (newusername[0]))
 215    {
 216       CC->cs_flags &= ~CS_STEALTH;
 217       memset(CC->fake_username, 0, 32);
 218       if (strncasecmp(newusername, CC->curr_user, strlen(CC->curr_user)))
 219          strncpy(CC->fake_username, newusername, 31);
 220    }
 221    else
 222    {
 223       CC->fake_username[0] = '\0';
 224       CC->cs_flags |= CS_STEALTH;
 225    }
 226    cprintf("%d\n",OK);
 227 }
 228
 229 /*
 230  * returns an asterisk if there are any express messages waiting,
 231  * space otherwise.
 232  */
 233 char check_express(void) {
 234         if (CC->ExpressMessages == NULL) {
 235                 return(' ');
 236                 }
 237         else {
 238                 return('*');
 239                 }
 240         }
 241
 242 void cmd_time(void)
 243 {
 244    time_t tv;
 245
 246    tv = time(NULL);
 247
 248    cprintf("%d %ld\n", OK, tv);
 249 }
 250
 251 /*
 252  * check a hostname against the public_clients file
 253  */
 254 int is_public_client(char *where)
 255 {
 256         char buf[256];
 257         FILE *fp;
 258
 259         if (!strcasecmp(where,"localhost")) return(1);
 260         if (!strcasecmp(where,config.c_fqdn)) return(1);
 261
 262         fp = fopen("public_clients","r");
 263         if (fp == NULL) return(0);
 264
 265         while (fgets(buf,256,fp)!=NULL) {
 266                 while (isspace((buf[strlen(buf)-1])))
 267                         buf[strlen(buf)-1] = 0;
 268                 if (!strcasecmp(buf,where)) {
 269                         fclose(fp);
 270                         return(1);
 271                         }
 272                 }
 273
 274         fclose(fp);
 275         return(0);
 276         }
 277
 278
 279 /*
 280  * the client is identifying itself to the server
 281  */
 282 void cmd_iden(char *argbuf)
 283 {
 284         int dev_code;
 285         int cli_code;
 286         int rev_level;
 287         char desc[256];
 288         char from_host[256];
 289
 290         if (num_parms(argbuf)<4) {
 291                 cprintf("%d usage error\n",ERROR);
 292                 return;
 293                 }
 294
 295         dev_code = extract_int(argbuf,0);
 296         cli_code = extract_int(argbuf,1);
 297         rev_level = extract_int(argbuf,2);
 298         extract(desc,argbuf,3);
 299
 300         strncpy(from_host,config.c_fqdn,sizeof from_host);
 301         from_host[sizeof from_host - 1] = 0;
 302         if (num_parms(argbuf)>=5) extract(from_host,argbuf,4);
 303
 304         CC->cs_clientdev = dev_code;
 305         CC->cs_clienttyp = cli_code;
 306         CC->cs_clientver = rev_level;
 307         strncpy(CC->cs_clientname,desc,31);
 308         CC->cs_clientname[31] = 0;
 309
 310         if ((strlen(from_host)>0) &&
 311            (is_public_client(CC->cs_host))) {
 312                 strncpy(CC->cs_host,from_host,24);
 313                 CC->cs_host[24] = 0;
 314                 }
 315         set_wtmpsupp_to_current_room();
 316
 317         syslog(LOG_NOTICE,"client %d/%d/%01d.%02d (%s)\n",
 318                 dev_code,
 319                 cli_code,
 320                 (rev_level / 100),
 321                 (rev_level % 100),
 322                 desc);
 323                 cprintf("%d Ok\n",OK);
 324         }
 325
 326
 327 /*
 328  * enter or exit "stealth mode"
 329  */
 330 void cmd_stel(char *cmdbuf)
 331 {
 332         int requested_mode;
 333
 334         requested_mode = extract_int(cmdbuf,0);
 335         if (requested_mode !=0) requested_mode = 1;
 336
 337         if (!CC->logged_in) {
 338                 cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
 339                 return;
 340                 }
 341
 342         if (CC->usersupp.axlevel < 6) {
 343                 cprintf("%d You must be an Aide to use stealth mode.\n",
 344                         ERROR+HIGHER_ACCESS_REQUIRED);
 345                 return;
 346                 }
 347
 348         if (CC->cs_flags & CS_STEALTH) {
 349                 if (requested_mode == 0)
 350                         CC->cs_flags = CC->cs_flags-CS_STEALTH;
 351                 }
 352         else {
 353                 if (requested_mode == 1)
 354                         CC->cs_flags = CC->cs_flags|CS_STEALTH;
 355                 }
 356
 357         set_wtmpsupp_to_current_room();
 358         cprintf("%d Ok\n",OK);
 359         }
 360
 361
 362
 363
 364 /*
 365  * display system messages or help
 366  */
 367 void cmd_mesg(char *mname)
 368 {
 369         FILE *mfp;
 370         char targ[256];
 371         char buf[256];
 372         char *dirs[2];
 373
 374         extract(buf,mname,0);
 375
 376
 377         dirs[0]=mallok(64);
 378         dirs[1]=mallok(64);
 379         strcpy(dirs[0],"messages");
 380         strcpy(dirs[1],"help");
 381         mesg_locate(targ,buf,2,dirs);
 382         phree(dirs[0]);
 383         phree(dirs[1]);
 384
 385
 386         if (strlen(targ)==0) {
 387                 cprintf("%d '%s' not found.\n",ERROR,mname);
 388                 return;
 389                 }
 390
 391         mfp = fopen(targ,"r");
 392         if (mfp==NULL) {
 393                 cprintf("%d Cannot open '%s': %s\n",
 394                         ERROR,targ,strerror(errno));
 395                 return;
 396                 }
 397         cprintf("%d %s\n",LISTING_FOLLOWS,buf);
 398
 399         while (fgets(buf,255,mfp)!=NULL) {
 400                 buf[strlen(buf)-1] = 0;
 401                 do_help_subst(buf);
 402                 cprintf("%s\n",buf);
 403                 }
 404
 405         fclose(mfp);
 406         cprintf("000\n");
 407         }
 408
 409
 410 /*
 411  * enter system messages or help
 412  */
 413 void cmd_emsg(char *mname)
 414 {
 415         FILE *mfp;
 416         char targ[256];
 417         char buf[256];
 418         char *dirs[2];
 419         int a;
 420
 421         if (CC->usersupp.axlevel < 6) {
 422                 cprintf("%d You must be an Aide to edit system messages.\n",
 423                         ERROR+HIGHER_ACCESS_REQUIRED);
 424                 return;
 425                 }
 426
 427         extract(buf,mname,0);
 428         for (a=0; a<strlen(buf); ++a) {         /* security measure */
 429                 if (buf[a] == '/') buf[a] = '.';
 430                 }
 431
 432         dirs[0]=mallok(64);
 433         dirs[1]=mallok(64);
 434         strcpy(dirs[0],"messages");
 435         strcpy(dirs[1],"help");
 436         mesg_locate(targ,buf,2,dirs);
 437         phree(dirs[0]);
 438         phree(dirs[1]);
 439
 440         if (strlen(targ)==0) {
 441                 snprintf(targ, sizeof targ, "./help/%s", buf);
 442                 }
 443
 444         mfp = fopen(targ,"w");
 445         if (mfp==NULL) {
 446                 cprintf("%d Cannot open '%s': %s\n",
 447                         ERROR,targ,strerror(errno));
 448                 return;
 449                 }
 450         cprintf("%d %s\n", SEND_LISTING, targ);
 451
 452         while (client_gets(buf), strcmp(buf, "000")) {
 453                 fprintf(mfp, "%s\n", buf);
 454                 }
 455
 456         fclose(mfp);
 457         }
 458
 459
 460 /*
 461  * who's online
 462  */
 463 void cmd_rwho(void) {
 464         struct CitContext *cptr;
 465         int spoofed = 0;
 466         int aide;
 467         char un[40], room[40], host[40], flags[5];
 468
 469         aide = CC->usersupp.axlevel >= 6;
 470         cprintf("%d\n",LISTING_FOLLOWS);
 471
 472         for (cptr = ContextList; cptr != NULL; cptr = cptr->next)
 473         {
 474                 flags[0] = '\0';
 475                 spoofed = 0;
 476
 477                 if (cptr->cs_flags & CS_POSTING)
 478                    strcat(flags, "*");
 479                 else
 480                    strcat(flags, ".");
 481
 482                 if (cptr->fake_username[0])
 483                 {
 484                    strcpy(un, cptr->fake_username);
 485                    spoofed = 1;
 486                 }
 487                 else
 488                    strcpy(un, cptr->curr_user);
 489
 490                 if (cptr->fake_hostname[0])
 491                 {
 492                    strcpy(host, cptr->fake_hostname);
 493                    spoofed = 1;
 494                 }
 495                 else
 496                    strcpy(host, cptr->cs_host);
 497
 498                 if (cptr->fake_roomname[0])
 499                 {
 500                    strcpy(room, cptr->fake_roomname);
 501                    spoofed = 1;
 502                 }
 503                 else
 504                    strcpy(room, cptr->cs_room);
 505
 506
 507                 if ((aide) && (spoofed))
 508                    strcat(flags, "+");
 509
 510                 if ((cptr->cs_flags & CS_STEALTH) && (aide))
 511                    strcat(flags, "-");
 512
 513                 if (((cptr->cs_flags&CS_STEALTH)==0) || (aide))
 514                 {
 515                         cprintf("%d|%s|%s|%s|%s|%ld|%s|%s\n",
 516                                 cptr->cs_pid, un, room,
 517                                 host, cptr->cs_clientname,
 518                                 (long)(cptr->lastidle),
 519                                 cptr->lastcmdname, flags);
 520                 }
 521                 if ((spoofed) && (aide))
 522                 {
 523                         cprintf("%d|%s|%s|%s|%s|%ld|%s|%s\n",
 524                                 cptr->cs_pid, cptr->curr_user, cptr->cs_room,
 525                                 cptr->cs_host, cptr->cs_clientname,
 526                                 (long)(cptr->lastidle),
 527                                 cptr->lastcmdname, flags);
 528
 529                 }
 530         }
 531         cprintf("000\n");
 532         }
 533
 534
 535 /*
 536  * Terminate another running session
 537  */
 538 void cmd_term(char *cmdbuf)
 539 {
 540         int session_num;
 541         struct CitContext *ccptr;
 542         int session_to_kill = 0;
 543
 544         if (!CC->logged_in) {
 545                 cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
 546                 return;
 547                 }
 548
 549         if (CC->usersupp.axlevel < 6) {
 550                 cprintf("%d You must be an Aide to terminate sessions.\n",
 551                         ERROR+HIGHER_ACCESS_REQUIRED);
 552                 return;
 553                 }
 554
 555         session_num = extract_int(cmdbuf, 0);
 556         if (session_num == CC->cs_pid) {
 557                 cprintf("%d You can't kill your own session.\n", ERROR);
 558                 return;
 559                 }
 560
 561         lprintf(9, "Locating session to kill\n");
 562         begin_critical_section(S_SESSION_TABLE);
 563         for (ccptr = ContextList; ccptr != NULL; ccptr = ccptr->next) {
 564                 if (session_num == ccptr->cs_pid) {
 565                         session_to_kill = ccptr->cs_pid;
 566                         }
 567                 }
 568         end_critical_section(S_SESSION_TABLE);
 569         lprintf(9, "session_to_kill == %d\n", session_to_kill);
 570
 571         if (session_to_kill > 0) {
 572                 lprintf(9, "calling kill_session()\n");
 573                 kill_session(session_to_kill);
 574                 cprintf("%d Session terminated.\n", OK);
 575                 }
 576         else {
 577                 cprintf("%d No such session.\n", ERROR);
 578                 }
 579         }
 580
 581
 582
 583
 584
 585 /*
 586  * get the paginator prompt
 587  */
 588 void cmd_more(void) {
 589         cprintf("%d %s\n",OK,config.c_moreprompt);
 590         }
 591
 592 /*
 593  * echo
 594  */
 595 void cmd_echo(char *etext)
 596 {
 597         cprintf("%d %s\n",OK,etext);
 598         }
 599
 600
 601
 602 /*
 603  * identify as internal program
 604  */
 605 void cmd_ipgm(char *argbuf)
 606 {
 607         int secret;
 608
 609         secret = extract_int(argbuf, 0);
 610         if (secret == config.c_ipgm_secret) {
 611                 CC->internal_pgm = 1;
 612                 strcpy(CC->curr_user, "<internal program>");
 613                 CC->cs_flags = CC->cs_flags|CS_STEALTH;
 614                 cprintf("%d Authenticated as an internal program.\n",OK);
 615                 }
 616         else {
 617                 cprintf("%d Authentication failed.\n",ERROR);
 618                 }
 619         }
 620
 621
 622 /*
 623  * Shut down the server
 624  */
 625 void cmd_down(void) {
 626         if (!CC->logged_in) {
 627                 cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
 628                 return;
 629                 }
 630
 631         if (CC->usersupp.axlevel < 6) {
 632                 cprintf("%d You must be an Aide to shut down the server.\n",
 633                         ERROR+HIGHER_ACCESS_REQUIRED);
 634                 return;
 635                 }
 636
 637         cprintf("%d Shutting down server.  Goodbye.\n", OK);
 638         master_cleanup();
 639         }
 640
 641 /*
 642  * Schedule or cancel a server shutdown
 643  */
 644 void cmd_scdn(char *argbuf)
 645 {
 646         int new_state;
 647
 648         if (!CC->logged_in) {
 649                 cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
 650                 return;
 651                 }
 652
 653         if (CC->usersupp.axlevel < 6) {
 654                 cprintf("%d You must be an Aide to schedule a shutdown.\n",
 655                         ERROR+HIGHER_ACCESS_REQUIRED);
 656                 return;
 657                 }
 658
 659         new_state = extract_int(argbuf, 0);
 660         if ((new_state == 0) || (new_state == 1)) {
 661                 ScheduledShutdown = new_state;
 662                 }
 663         cprintf("%d %d\n", OK, ScheduledShutdown);
 664         }
 665
 666
 667 /*
 668  * main context loop
 669  */
 670 void *context_loop(struct CitContext *con)
 671 {
 672         char cmdbuf[256];
 673         int num_sessions;
 674
 675         /*
 676          * Wedge our way into the context table.
 677          */
 678         InitMyContext(con);
 679
 680         /*
 681          * Initialize some variables specific to our context.
 682          */
 683         CC->logged_in = 0;
 684         CC->internal_pgm = 0;
 685         CC->download_fp = NULL;
 686         CC->upload_fp = NULL;
 687         CC->cs_pid = con->client_socket;        /* not necessarily portable */
 688         CC->ExpressMessages = NULL;
 689         CC->msglist = NULL;
 690         CC->num_msgs = 0;
 691         time(&CC->lastcmd);
 692         time(&CC->lastidle);
 693         strcpy(CC->lastcmdname, "    ");
 694         strcpy(CC->cs_clientname, "(unknown)");
 695         strcpy(CC->curr_user,"");
 696         strcpy(CC->net_node,"");
 697         snprintf(CC->temp, sizeof CC->temp, "/tmp/CitServer.%d.%d", getpid(), CC->cs_pid);
 698         strcpy(CC->cs_room, "");
 699         strncpy(CC->cs_host, config.c_fqdn, sizeof CC->cs_host);
 700         CC->cs_host[sizeof CC->cs_host - 1] = 0;
 701         locate_host(CC->cs_host);
 702         CC->cs_flags = 0;
 703         CC->upload_type = UPL_FILE;
 704         CC->dl_is_net = 0;
 705
 706         num_sessions = session_count();
 707         CC->nologin = 0;
 708         if ((config.c_maxsessions > 0)&&(num_sessions > config.c_maxsessions))
 709                 CC->nologin = 1;
 710
 711         if (CC->nologin==1) {
 712            cprintf("%d %s: Too many users are already online (maximum is %d)\n",
 713                 ERROR+MAX_SESSIONS_EXCEEDED,
 714                 config.c_nodename,config.c_maxsessions);
 715                 }
 716         else {
 717            cprintf("%d %s Citadel/UX server ready.\n",OK,config.c_nodename);
 718                 }
 719
 720         lprintf(3, "citserver[%3d]: started.\n", CC->cs_pid);
 721
 722         /* Run any session startup routines registered by loadable modules */
 723         PerformSessionHooks(EVT_START);
 724
 725         rec_log(CL_CONNECT, "");
 726
 727         do {
 728                 time(&CC->lastcmd);
 729                 memset(cmdbuf, 0, sizeof cmdbuf); /* Clear it, just in case */
 730                 if (client_gets(cmdbuf) < 1) cleanup(EXIT_NULL);
 731                 lprintf(5, "citserver[%3d]: %s\n", CC->cs_pid, cmdbuf);
 732
 733                 /*
 734                  * Let other clients see the last command we executed, but
 735                  * exclude NOOP because that would be boring.
 736                  */
 737                 if (strncasecmp(cmdbuf, "NOOP", 4)) {
 738                         strcpy(CC->lastcmdname, "    ");
 739                         strncpy(CC->lastcmdname, cmdbuf, 4);
 740                         time(&CC->lastidle);
 741                         }
 742
 743                 if ((strncasecmp(cmdbuf, "ENT0", 4)) && (strncasecmp(cmdbuf, "MESG", 4)) && (strncasecmp(cmdbuf, "MSGS", 4)))
 744                 {
 745                    CC->cs_flags &= ~CS_POSTING;
 746                 }
 747
 748 /*
 749  * This loop recognizes all server commands.
 750  */
 751
 752                 if (!strncasecmp(cmdbuf,"NOOP",4)) {
 753                         cprintf("%d%cok\n",OK,check_express());
 754                         }
 755
 756                 else if (!strncasecmp(cmdbuf,"QUIT",4)) {
 757                         cprintf("%d Goodbye.\n",OK);
 758                         }
 759
 760                 else if (!strncasecmp(cmdbuf,"LOUT",4)) {
 761                         if (CC->logged_in) logout(CC);
 762                         cprintf("%d logged out.\n",OK);
 763                         }
 764
 765                 else if (!strncasecmp(cmdbuf,"USER",4)) {
 766                         cmd_user(&cmdbuf[5]);
 767                         }
 768
 769                 else if (!strncasecmp(cmdbuf,"PASS",4)) {
 770                         cmd_pass(&cmdbuf[5]);
 771                         }
 772
 773                 else if (!strncasecmp(cmdbuf,"NEWU",4)) {
 774                         cmd_newu(&cmdbuf[5]);
 775                         }
 776
 777                 else if (!strncasecmp(cmdbuf,"SETP",4)) {
 778                         cmd_setp(&cmdbuf[5]);
 779                         }
 780
 781                 else if (!strncasecmp(cmdbuf,"LRMS",4)) {
 782                         cmd_lrms(&cmdbuf[5]);
 783                         }
 784
 785                 else if (!strncasecmp(cmdbuf,"LKRA",4)) {
 786                         cmd_lkra(&cmdbuf[5]);
 787                         }
 788
 789                 else if (!strncasecmp(cmdbuf,"LKRN",4)) {
 790                         cmd_lkrn(&cmdbuf[5]);
 791                         }
 792
 793                 else if (!strncasecmp(cmdbuf,"LKRO",4)) {
 794                         cmd_lkro(&cmdbuf[5]);
 795                         }
 796
 797                 else if (!strncasecmp(cmdbuf,"LZRM",4)) {
 798                         cmd_lzrm(&cmdbuf[5]);
 799                         }
 800
 801                 else if (!strncasecmp(cmdbuf,"GETU",4)) {
 802                         cmd_getu();
 803                         }
 804
 805                 else if (!strncasecmp(cmdbuf,"SETU",4)) {
 806                         cmd_setu(&cmdbuf[5]);
 807                         }
 808
 809                 else if (!strncasecmp(cmdbuf,"GOTO",4)) {
 810                         cmd_goto(&cmdbuf[5]);
 811                         }
 812
 813                 else if (!strncasecmp(cmdbuf,"MSGS",4)) {
 814                         cmd_msgs(&cmdbuf[5]);
 815                         }
 816
 817                 else if (!strncasecmp(cmdbuf,"WHOK",4)) {
 818                         cmd_whok();
 819                         }
 820
 821                 else if (!strncasecmp(cmdbuf,"RDIR",4)) {
 822                         cmd_rdir();
 823                         }
 824
 825                 else if (!strncasecmp(cmdbuf,"MSG0",4)) {
 826                         cmd_msg0(&cmdbuf[5]);
 827                         }
 828
 829                 else if (!strncasecmp(cmdbuf,"MSG2",4)) {
 830                         cmd_msg2(&cmdbuf[5]);
 831                         }
 832
 833                 else if (!strncasecmp(cmdbuf,"MSG3",4)) {
 834                         cmd_msg3(&cmdbuf[5]);
 835                         }
 836
 837                 else if (!strncasecmp(cmdbuf,"MSG4",4)) {
 838                         cmd_msg4(&cmdbuf[5]);
 839                         }
 840
 841                 else if (!strncasecmp(cmdbuf,"OPNA",4)) {
 842                         cmd_opna(&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         }