citadel/citserver.c

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