citadel/user_ops.c

   1 /* $Id$ */
   2
   3 #include "sysdep.h"
   4 #include <errno.h>
   5 #include <stdlib.h>
   6 #include <unistd.h>
   7 #include <stdio.h>
   8 #include <fcntl.h>
   9 #include <signal.h>
  10 #include <pwd.h>
  11 #include <sys/types.h>
  12 #include <sys/wait.h>
  13 #include <sys/time.h>
  14 #include <string.h>
  15 #include <syslog.h>
  16 #include <limits.h>
  17 #ifdef HAVE_PTHREAD_H
  18 #include <pthread.h>
  19 #endif
  20 #ifndef ENABLE_CHKPWD
  21 #include "auth.h"
  22 #endif
  23 #include "citadel.h"
  24 #include "server.h"
  25 #include "database.h"
  26 #include "user_ops.h"
  27 #include "sysdep_decls.h"
  28 #include "support.h"
  29 #include "room_ops.h"
  30 #include "logging.h"
  31 #include "file_ops.h"
  32 #include "control.h"
  33 #include "msgbase.h"
  34 #include "config.h"
  35 #include "dynloader.h"
  36 #include "tools.h"
  37
  38
  39 /*
  40  * getuser()  -  retrieve named user into supplied buffer.
  41  *               returns 0 on success
  42  */
  43 int getuser(struct usersupp *usbuf, char name[]) {
  44
  45         char lowercase_name[32];
  46         int a;
  47         struct cdbdata *cdbus;
  48
  49         memset(usbuf, 0, sizeof(struct usersupp));
  50         for (a=0; a<=strlen(name); ++a) {
  51                 if (a < sizeof(lowercase_name))
  52                         lowercase_name[a] = tolower(name[a]);
  53                 }
  54         lowercase_name[sizeof(lowercase_name)-1] = 0;
  55
  56         cdbus = cdb_fetch(CDB_USERSUPP, lowercase_name, strlen(lowercase_name));
  57         if (cdbus == NULL) {
  58                 return(1);      /* user not found */
  59                 }
  60
  61         memcpy(usbuf, cdbus->ptr,
  62                 ( (cdbus->len > sizeof(struct usersupp)) ?
  63                 sizeof(struct usersupp) : cdbus->len) );
  64         cdb_free(cdbus);
  65         return(0);
  66         }
  67
  68
  69 /*
  70  * lgetuser()  -  same as getuser() but locks the record
  71  */
  72 int lgetuser(struct usersupp *usbuf, char *name)
  73 {
  74         int retcode;
  75
  76         retcode = getuser(usbuf,name);
  77         if (retcode == 0) {
  78                 begin_critical_section(S_USERSUPP);
  79                 }
  80         return(retcode);
  81         }
  82
  83
  84 /*
  85  * putuser()  -  write user buffer into the correct place on disk
  86  */
  87 void putuser(struct usersupp *usbuf, char *name)
  88 {
  89         char lowercase_name[32];
  90         int a;
  91
  92         for (a=0; a<=strlen(name); ++a) {
  93                 if (a < sizeof(lowercase_name))
  94                         lowercase_name[a] = tolower(name[a]);
  95                 }
  96         lowercase_name[sizeof(lowercase_name)-1] = 0;
  97
  98         cdb_store(CDB_USERSUPP,
  99                 lowercase_name, strlen(lowercase_name),
 100                 usbuf, sizeof(struct usersupp));
 101
 102         }
 103
 104
 105 /*
 106  * lputuser()  -  same as putuser() but locks the record
 107  */
 108 void lputuser(struct usersupp *usbuf, char *name) {
 109         putuser(usbuf,name);
 110         end_critical_section(S_USERSUPP);
 111         }
 112
 113 /*
 114  * Index-generating function used by Ctdl[Get|Set]Relationship
 115  */
 116 int GenerateRelationshipIndex(  char *IndexBuf,
 117                                 long RoomID,
 118                                 long RoomGen,
 119                                 long UserID) {
 120
 121         struct {
 122                 long iRoomID;
 123                 long iRoomGen;
 124                 long iUserID;
 125                 } TheIndex;
 126
 127         TheIndex.iRoomID = RoomID;
 128         TheIndex.iRoomGen = RoomGen;
 129         TheIndex.iUserID = UserID;
 130
 131         memcpy(IndexBuf, &TheIndex, sizeof(TheIndex));
 132         return(sizeof(TheIndex));
 133         }
 134
 135 /*
 136  * Define a relationship between a user and a room
 137  */
 138 void CtdlSetRelationship(struct visit *newvisit,
 139                         struct usersupp *rel_user,
 140                         struct quickroom *rel_room) {
 141
 142         char IndexBuf[32];
 143         int IndexLen;
 144
 145         /* We don't use these in Citadel because they're implicit by the
 146          * index, but they must be present if the database is exported.
 147          */
 148         newvisit->v_roomnum = rel_room->QRnumber;
 149         newvisit->v_roomgen = rel_room->QRgen;
 150         newvisit->v_usernum = rel_user->usernum;
 151
 152         /* Generate an index */
 153         IndexLen = GenerateRelationshipIndex(IndexBuf,
 154                 rel_room->QRnumber,
 155                 rel_room->QRgen,
 156                 rel_user->usernum);
 157
 158         /* Store the record */
 159         cdb_store(CDB_VISIT, IndexBuf, IndexLen,
 160                 newvisit, sizeof(struct visit)
 161                 );
 162         }
 163
 164 /*
 165  * Locate a relationship between a user and a room
 166  */
 167 void CtdlGetRelationship(struct visit *vbuf,
 168                         struct usersupp *rel_user,
 169                         struct quickroom *rel_room) {
 170
 171         char IndexBuf[32];
 172         int IndexLen;
 173         struct cdbdata *cdbvisit;
 174
 175         /* Generate an index */
 176         IndexLen = GenerateRelationshipIndex(IndexBuf,
 177                 rel_room->QRnumber,
 178                 rel_room->QRgen,
 179                 rel_user->usernum);
 180
 181         /* Clear out the buffer */
 182         memset(vbuf, 0, sizeof(struct visit));
 183
 184         cdbvisit = cdb_fetch(CDB_VISIT, IndexBuf, IndexLen);
 185         if (cdbvisit != NULL) {
 186                 memcpy(vbuf, cdbvisit->ptr,
 187                         ( (cdbvisit->len > sizeof(struct visit)) ?
 188                         sizeof(struct visit) : cdbvisit->len) );
 189                 cdb_free(cdbvisit);
 190                 return;
 191                 }
 192         }
 193
 194
 195 void MailboxName(char *buf, struct usersupp *who, char *prefix) {
 196         sprintf(buf, "%010ld.%s", who->usernum, prefix);
 197         }
 198
 199
 200 /*
 201  * Is the user currently logged in an Aide?
 202  */
 203 int is_aide(void) {
 204         if (CC->usersupp.axlevel >= 6) return(1);
 205         else return(0);
 206         }
 207
 208
 209 /*
 210  * Is the user currently logged in an Aide *or* the room aide for this room?
 211  */
 212 int is_room_aide(void) {
 213         if ( (CC->usersupp.axlevel >= 6)
 214            || (CC->quickroom.QRroomaide == CC->usersupp.usernum) ) {
 215                 return(1);
 216                 }
 217         else {
 218                 return(0);
 219                 }
 220         }
 221
 222 /*
 223  * getuserbynumber()  -  get user by number
 224  *                       returns 0 if user was found
 225  */
 226 int getuserbynumber(struct usersupp *usbuf, long int number)
 227 {
 228         struct cdbdata *cdbus;
 229
 230         cdb_rewind(CDB_USERSUPP);
 231
 232         while(cdbus = cdb_next_item(CDB_USERSUPP), cdbus != NULL) {
 233                 memset(usbuf, 0, sizeof(struct usersupp));
 234                 memcpy(usbuf, cdbus->ptr,
 235                         ( (cdbus->len > sizeof(struct usersupp)) ?
 236                         sizeof(struct usersupp) : cdbus->len) );
 237                 cdb_free(cdbus);
 238                 if (usbuf->usernum == number) {
 239                         return(0);
 240                         }
 241                 }
 242         return(-1);
 243         }
 244
 245
 246 /*
 247  * USER cmd
 248  */
 249 void cmd_user(char *cmdbuf)
 250 {
 251         char username[256];
 252         char autoname[256];
 253         int found_user = 0;
 254         struct passwd *p;
 255         int a;
 256
 257         extract(username,cmdbuf,0);
 258         username[25] = 0;
 259         strproc(username);
 260
 261         if ((CC->logged_in)) {
 262                 cprintf("%d Already logged in.\n",ERROR);
 263                 return;
 264                 }
 265
 266         found_user = getuser(&CC->usersupp,username);
 267         if (found_user != 0) {
 268                 p = (struct passwd *)getpwnam(username);
 269                 if (p!=NULL) {
 270                         strcpy(autoname,p->pw_gecos);
 271                         for (a=0; a<strlen(autoname); ++a)
 272                                 if (autoname[a]==',') autoname[a]=0;
 273                         found_user = getuser(&CC->usersupp,autoname);
 274                         }
 275                 }
 276         if (found_user == 0) {
 277                 if (((CC->nologin)) && (CC->usersupp.axlevel < 6)) {
 278                         cprintf("%d %s: Too many users are already online (maximum is %d)\n",
 279                         ERROR+MAX_SESSIONS_EXCEEDED,
 280                         config.c_nodename,config.c_maxsessions);
 281                         }
 282                 else {
 283                         strcpy(CC->curr_user,CC->usersupp.fullname);
 284                         cprintf("%d Password required for %s\n",
 285                                 MORE_DATA,CC->curr_user);
 286                         }
 287                 }
 288         else {
 289                 cprintf("%d %s not found.\n",ERROR,username);
 290                 }
 291         }
 292
 293
 294
 295 /*
 296  * session startup code which is common to both cmd_pass() and cmd_newu()
 297  */
 298 void session_startup(void) {
 299         syslog(LOG_NOTICE,"user <%s> logged in",CC->curr_user);
 300
 301         lgetuser(&CC->usersupp,CC->curr_user);
 302         ++(CC->usersupp.timescalled);
 303         CC->fake_username[0] = '\0';
 304         CC->fake_postname[0] = '\0';
 305         CC->fake_hostname[0] = '\0';
 306         CC->fake_roomname[0] = '\0';
 307         time(&CC->usersupp.lastcall);
 308
 309         /* If this user's name is the name of the system administrator
 310          * (as specified in setup), automatically assign access level 6.
 311          */
 312         if (!strcasecmp(CC->usersupp.fullname, config.c_sysadm)) {
 313                 CC->usersupp.axlevel = 6;
 314                 }
 315
 316         lputuser(&CC->usersupp,CC->curr_user);
 317
 318         /* Run any cleanup routines registered by loadable modules */
 319         PerformSessionHooks(EVT_LOGIN);
 320
 321         cprintf("%d %s|%d|%d|%d|%u|%ld\n",OK,CC->usersupp.fullname,CC->usersupp.axlevel,
 322                 CC->usersupp.timescalled,CC->usersupp.posted,CC->usersupp.flags,
 323                 CC->usersupp.usernum);
 324         usergoto(BASEROOM,0);           /* Enter the lobby */
 325         rec_log(CL_LOGIN,CC->curr_user);
 326         }
 327
 328
 329 /*
 330  * misc things to be taken care of when a user is logged out
 331  */
 332 void logout(struct CitContext *who)
 333 {
 334         who->logged_in = 0;
 335         if (who->download_fp != NULL) {
 336                 fclose(who->download_fp);
 337                 who->download_fp = NULL;
 338                 }
 339         if (who->upload_fp != NULL) {
 340                 abort_upl(who);
 341                 }
 342
 343         /* Do modular stuff... */
 344         PerformSessionHooks(EVT_LOGOUT);
 345         }
 346
 347 #ifdef ENABLE_CHKPWD
 348 /*
 349  * an alternate version of validpw() which executes `chkpwd' instead of
 350  * verifying the password directly
 351  */
 352 static int validpw(uid_t uid, const char *pass)
 353 {
 354         pid_t pid;
 355         int status, pipev[2];
 356         char buf[24];
 357
 358         if (pipe(pipev)) {
 359                 lprintf(1, "pipe failed (%s): denying autologin access for "
 360                            "uid %u\n", strerror(errno), uid);
 361                 return 0;
 362                 }
 363
 364         switch (pid = fork()) {
 365             case -1:
 366                 lprintf(1, "fork failed (%s): denying autologin access for "
 367                            "uid %u\n", strerror(errno), uid);
 368                 close(pipev[0]);
 369                 close(pipev[1]);
 370                 return 0;
 371
 372             case 0:
 373                 close(pipev[1]);
 374                 if (dup2(pipev[0], 0) == -1) {
 375                         perror("dup2");
 376                         exit(1);
 377                         }
 378                 close(pipev[0]);
 379
 380                 execl(BBSDIR "/chkpwd", BBSDIR "/chkpwd", NULL);
 381                 perror(BBSDIR "/chkpwd");
 382                 exit(1);
 383                 }
 384
 385         close(pipev[0]);
 386         write(pipev[1], buf, sprintf(buf, "%u\n", uid));
 387         write(pipev[1], pass, strlen(pass));
 388         write(pipev[1], "\n", 1);
 389         close(pipev[1]);
 390
 391         while (waitpid(pid, &status, 0) == -1)
 392                 if (errno != EINTR) {
 393                         lprintf(1, "waitpid failed (%s): denying autologin "
 394                                    "access for uid %u\n",
 395                                 strerror(errno), uid);
 396                         return 0;
 397                         }
 398
 399         if (WIFEXITED(status) && !WEXITSTATUS(status))
 400                 return 1;
 401
 402         return 0;
 403         }
 404 #endif
 405
 406 void cmd_pass(char *buf)
 407 {
 408         char password[256];
 409         int code;
 410
 411         extract(password,buf,0);
 412
 413         if ((CC->logged_in)) {
 414                 cprintf("%d Already logged in.\n",ERROR);
 415                 return;
 416                 }
 417         if (!strcmp(CC->curr_user,"")) {
 418                 cprintf("%d You must send a name with USER first.\n",ERROR);
 419                 return;
 420                 }
 421         if (getuser(&CC->usersupp,CC->curr_user)) {
 422                 cprintf("%d Can't find user record!\n",ERROR+INTERNAL_ERROR);
 423                 return;
 424                 }
 425
 426         code = (-1);
 427         if (CC->usersupp.USuid == BBSUID) {
 428                 strproc(password);
 429                 strproc(CC->usersupp.password);
 430                 code = strcasecmp(CC->usersupp.password,password);
 431                 }
 432 #ifdef ENABLE_AUTOLOGIN
 433         else {
 434                 if (validpw(CC->usersupp.USuid, password)) {
 435                         code = 0;
 436                         lgetuser(&CC->usersupp, CC->curr_user);
 437                         safestrncpy(CC->usersupp.password, password,
 438                                     sizeof CC->usersupp.password);
 439                         lputuser(&CC->usersupp, CC->curr_user);
 440                         }
 441                 }
 442 #endif
 443
 444         if (!code) {
 445                 (CC->logged_in) = 1;
 446                 session_startup();
 447                 }
 448         else {
 449                 cprintf("%d Wrong password.\n",ERROR);
 450                 rec_log(CL_BADPW,CC->curr_user);
 451                 }
 452         }
 453
 454
 455 /*
 456  * Delete a user record *and* all of its related resources.
 457  */
 458 int purge_user(char pname[]) {
 459         char filename[64];
 460         char mailboxname[ROOMNAMELEN];
 461         struct usersupp usbuf;
 462         struct quickroom qrbuf;
 463         char lowercase_name[32];
 464         int a;
 465         struct CitContext *ccptr;
 466         int user_is_logged_in = 0;
 467
 468         for (a=0; a<=strlen(pname); ++a) {
 469                 lowercase_name[a] = tolower(pname[a]);
 470                 }
 471
 472         if (getuser(&usbuf, pname) != 0) {
 473                 lprintf(5, "Cannot purge user <%s> - not found\n", pname);
 474                 return(ERROR+NO_SUCH_USER);
 475                 }
 476
 477         /* Don't delete a user who is currently logged in.  Instead, just
 478          * set the access level to 0, and let the account get swept up
 479          * during the next purge.
 480          */
 481         user_is_logged_in = 0;
 482         begin_critical_section(S_SESSION_TABLE);
 483         for (ccptr=ContextList; ccptr!=NULL; ccptr=ccptr->next) {
 484                 if (ccptr->usersupp.usernum == usbuf.usernum) {
 485                         user_is_logged_in = 1;
 486                         }
 487                 }
 488         end_critical_section(S_SESSION_TABLE);
 489         if (user_is_logged_in == 1) {
 490                 lprintf(5, "User <%s> is logged in; not deleting.\n", pname);
 491                 usbuf.axlevel = 0;
 492                 putuser(&usbuf, pname);
 493                 return(1);
 494                 }
 495
 496         lprintf(5, "Deleting user <%s>\n", pname);
 497
 498         /* Perform any purge functions registered by server extensions */
 499         PerformUserHooks(usbuf.fullname, usbuf.usernum, EVT_PURGEUSER);
 500
 501         /* delete any existing user/room relationships */
 502         cdb_delete(CDB_VISIT, &usbuf.usernum, sizeof(long));
 503
 504         /* Delete the user's mailbox and its contents */
 505         MailboxName(mailboxname, &usbuf, MAILROOM);
 506         if (getroom(&qrbuf, mailboxname)==0) {
 507                 delete_room(&qrbuf);
 508                 }
 509
 510         /* delete the userlog entry */
 511         cdb_delete(CDB_USERSUPP, lowercase_name, strlen(lowercase_name));
 512
 513         /* remove the user's bio file */
 514         sprintf(filename, "./bio/%ld", usbuf.usernum);
 515         unlink(filename);
 516
 517         /* remove the user's picture */
 518         sprintf(filename, "./userpics/%ld.gif", usbuf.usernum);
 519         unlink(filename);
 520
 521         return(0);
 522         }
 523
 524
 525 /*
 526  * create_user()  -  back end processing to create a new user
 527  */
 528 int create_user(char *newusername)
 529 {
 530         struct usersupp usbuf;
 531         int a;
 532         struct passwd *p = NULL;
 533         char username[64];
 534         char mailboxname[ROOMNAMELEN];
 535
 536         strcpy(username, newusername);
 537         strproc(username);
 538
 539 #ifdef ENABLE_AUTOLOGIN
 540         p = (struct passwd *)getpwnam(username);
 541 #endif
 542         if (p != NULL) {
 543                 strcpy(username, p->pw_gecos);
 544                 for (a=0; a<strlen(username); ++a) {
 545                         if (username[a] == ',') username[a] = 0;
 546                         }
 547                 CC->usersupp.USuid = p->pw_uid;
 548                 }
 549         else {
 550                 CC->usersupp.USuid = BBSUID;
 551                 }
 552
 553         if (!getuser(&usbuf,username)) {
 554                 return(ERROR+ALREADY_EXISTS);
 555                 }
 556
 557         strcpy(CC->curr_user,username);
 558         strcpy(CC->usersupp.fullname,username);
 559         strcpy(CC->usersupp.password,"");
 560         (CC->logged_in) = 1;
 561
 562         /* These are the default flags on new accounts */
 563         CC->usersupp.flags =
 564                 US_NEEDVALID|US_LASTOLD|US_DISAPPEAR|US_PAGINATOR|US_FLOORS;
 565
 566         CC->usersupp.timescalled = 0;
 567         CC->usersupp.posted = 0;
 568         CC->usersupp.axlevel = config.c_initax;
 569         CC->usersupp.USscreenwidth = 80;
 570         CC->usersupp.USscreenheight = 24;
 571         time(&CC->usersupp.lastcall);
 572         strcpy(CC->usersupp.USname, "");
 573         strcpy(CC->usersupp.USaddr, "");
 574         strcpy(CC->usersupp.UScity, "");
 575         strcpy(CC->usersupp.USstate, "");
 576         strcpy(CC->usersupp.USzip, "");
 577         strcpy(CC->usersupp.USphone, "");
 578
 579         /* fetch a new user number */
 580         CC->usersupp.usernum = get_new_user_number();
 581
 582         if (CC->usersupp.usernum == 1L) {
 583                 CC->usersupp.axlevel = 6;
 584                 }
 585
 586         /* add user to userlog */
 587         putuser(&CC->usersupp,CC->curr_user);
 588         if (getuser(&CC->usersupp,CC->curr_user)) {
 589                 return(ERROR+INTERNAL_ERROR);
 590                 }
 591
 592         /* give the user a private mailbox */
 593         MailboxName(mailboxname, &CC->usersupp, MAILROOM);
 594         create_room(mailboxname, 4, "", 0);
 595
 596         rec_log(CL_NEWUSER,CC->curr_user);
 597         return(0);
 598         }
 599
 600
 601
 602
 603 /*
 604  * cmd_newu()  -  create a new user account
 605  */
 606 void cmd_newu(char *cmdbuf)
 607 {
 608         int a;
 609         char username[256];
 610
 611         if ((CC->logged_in)) {
 612                 cprintf("%d Already logged in.\n",ERROR);
 613                 return;
 614                 }
 615
 616         if ((CC->nologin)) {
 617                 cprintf("%d %s: Too many users are already online (maximum is %d)\n",
 618                 ERROR+MAX_SESSIONS_EXCEEDED,
 619                 config.c_nodename,config.c_maxsessions);
 620                 }
 621
 622         extract(username,cmdbuf,0);
 623         username[25] = 0;
 624         strproc(username);
 625
 626         if (strlen(username)==0) {
 627                 cprintf("%d You must supply a user name.\n",ERROR);
 628                 return;
 629                 }
 630
 631         a = create_user(username);
 632         if ((!strcasecmp(username, "bbs")) ||
 633             (!strcasecmp(username, "new")) ||
 634             (!strcasecmp(username, ".")))
 635         {
 636            cprintf("%d '%s' is an invalid login name.\n", ERROR);
 637            return;
 638         }
 639         if (a==ERROR+ALREADY_EXISTS) {
 640                 cprintf("%d '%s' already exists.\n",
 641                         ERROR+ALREADY_EXISTS,username);
 642                 return;
 643                 }
 644         else if (a==ERROR+INTERNAL_ERROR) {
 645                 cprintf("%d Internal error - user record disappeared?\n",
 646                         ERROR+INTERNAL_ERROR);
 647                 return;
 648                 }
 649         else if (a==0) {
 650                 session_startup();
 651                 }
 652         else {
 653                 cprintf("%d unknown error\n",ERROR);
 654                 }
 655         rec_log(CL_NEWUSER,CC->curr_user);
 656         }
 657
 658
 659
 660 /*
 661  * set password
 662  */
 663 void cmd_setp(char *new_pw)
 664 {
 665         if (!(CC->logged_in)) {
 666                 cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
 667                 return;
 668                 }
 669         if (CC->usersupp.USuid != BBSUID) {
 670                 cprintf("%d Not allowed.  Use the 'passwd' command.\n",ERROR);
 671                 return;
 672                 }
 673         strproc(new_pw);
 674         if (strlen(new_pw)==0) {
 675                 cprintf("%d Password unchanged.\n",OK);
 676                 return;
 677                 }
 678         lgetuser(&CC->usersupp,CC->curr_user);
 679         strcpy(CC->usersupp.password,new_pw);
 680         lputuser(&CC->usersupp,CC->curr_user);
 681         cprintf("%d Password changed.\n",OK);
 682         rec_log(CL_PWCHANGE,CC->curr_user);
 683         PerformSessionHooks(EVT_SETPASS);
 684         }
 685
 686 /*
 687  * get user parameters
 688  */
 689 void cmd_getu(void) {
 690         if (!(CC->logged_in)) {
 691                 cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
 692                 return;
 693                 }
 694         getuser(&CC->usersupp,CC->curr_user);
 695         cprintf("%d %d|%d|%d\n",
 696                 OK,
 697                 CC->usersupp.USscreenwidth,
 698                 CC->usersupp.USscreenheight,
 699                 (CC->usersupp.flags & US_USER_SET)
 700                 );
 701         }
 702
 703 /*
 704  * set user parameters
 705  */
 706 void cmd_setu(char *new_parms)
 707 {
 708
 709         if (num_parms(new_parms)!=3) {
 710                 cprintf("%d Usage error.\n",ERROR);
 711                 return;
 712                 }
 713         if (!(CC->logged_in)) {
 714                 cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
 715                 return;
 716                 }
 717         lgetuser(&CC->usersupp,CC->curr_user);
 718         CC->usersupp.USscreenwidth = extract_int(new_parms,0);
 719         CC->usersupp.USscreenheight = extract_int(new_parms,1);
 720         CC->usersupp.flags = CC->usersupp.flags & (~US_USER_SET);
 721         CC->usersupp.flags = CC->usersupp.flags |
 722                 (extract_int(new_parms,2) & US_USER_SET);
 723         lputuser(&CC->usersupp,CC->curr_user);
 724         cprintf("%d Ok\n",OK);
 725         }
 726
 727 /*
 728  * set last read pointer
 729  */
 730 void cmd_slrp(char *new_ptr)
 731 {
 732         long newlr;
 733         struct visit vbuf;
 734
 735         if (!(CC->logged_in)) {
 736                 cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
 737                 return;
 738                 }
 739
 740         if (!strncasecmp(new_ptr,"highest",7)) {
 741                 newlr = CC->quickroom.QRhighest;
 742                 }
 743         else {
 744                 newlr = atol(new_ptr);
 745                 }
 746
 747         lgetuser(&CC->usersupp, CC->curr_user);
 748
 749         CtdlGetRelationship(&vbuf, &CC->usersupp, &CC->quickroom);
 750         vbuf.v_lastseen = newlr;
 751         CtdlSetRelationship(&vbuf, &CC->usersupp, &CC->quickroom);
 752
 753         lputuser(&CC->usersupp, CC->curr_user);
 754         cprintf("%d %ld\n",OK,newlr);
 755         }
 756
 757
 758 /*
 759  * INVT and KICK commands
 760  */
 761 void cmd_invt_kick(char *iuser, int op)
 762                         /* user name */
 763         {               /* 1 = invite, 0 = kick out */
 764         struct usersupp USscratch;
 765         char bbb[256];
 766         struct visit vbuf;
 767
 768         if (!(CC->logged_in)) {
 769                 cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
 770                 return;
 771                 }
 772
 773         if (is_room_aide()==0) {
 774                 cprintf("%d Higher access required.\n",
 775                         ERROR+HIGHER_ACCESS_REQUIRED);
 776                 return;
 777                 }
 778
 779         if (lgetuser(&USscratch,iuser)!=0) {
 780                 cprintf("%d No such user.\n",ERROR);
 781                 return;
 782                 }
 783
 784         CtdlGetRelationship(&vbuf, &USscratch, &CC->quickroom);
 785
 786         if (op==1) {
 787                 vbuf.v_flags = vbuf.v_flags & ~V_FORGET & ~V_LOCKOUT;
 788                 vbuf.v_flags = vbuf.v_flags | V_ACCESS;
 789                 }
 790
 791         if (op==0) {
 792                 vbuf.v_flags = vbuf.v_flags & ~V_ACCESS;
 793                 vbuf.v_flags = vbuf.v_flags | V_FORGET | V_LOCKOUT;
 794                 }
 795
 796         CtdlSetRelationship(&vbuf, &USscratch, &CC->quickroom);
 797
 798         lputuser(&USscratch,iuser);
 799
 800         /* post a message in Aide> saying what we just did */
 801         sprintf(bbb,"%s %s %s> by %s",
 802                 iuser,
 803                 ((op == 1) ? "invited to" : "kicked out of"),
 804                 CC->quickroom.QRname,
 805                 CC->usersupp.fullname);
 806         aide_message(bbb);
 807
 808         cprintf("%d %s %s %s.\n",
 809                 OK, iuser,
 810                 ((op == 1) ? "invited to" : "kicked out of"),
 811                 CC->quickroom.QRname);
 812         return;
 813         }
 814
 815
 816 /*
 817  * forget (Zap) the current room
 818  */
 819 void cmd_forg(void) {
 820         struct visit vbuf;
 821
 822         if (!(CC->logged_in)) {
 823                 cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
 824                 return;
 825                 }
 826
 827         if (is_aide()) {
 828                 cprintf("%d Aides cannot forget rooms.\n",ERROR);
 829                 return;
 830                 }
 831
 832         lgetuser(&CC->usersupp,CC->curr_user);
 833         CtdlGetRelationship(&vbuf, &CC->usersupp, &CC->quickroom);
 834
 835         vbuf.v_flags = vbuf.v_flags | V_FORGET;
 836         vbuf.v_flags = vbuf.v_flags & ~V_ACCESS;
 837
 838         CtdlSetRelationship(&vbuf, &CC->usersupp, &CC->quickroom);
 839         lputuser(&CC->usersupp,CC->curr_user);
 840         cprintf("%d Ok\n",OK);
 841         usergoto(BASEROOM, 0);
 842         }
 843
 844 /*
 845  * Get Next Unregistered User
 846  */
 847 void cmd_gnur(void) {
 848         struct cdbdata *cdbus;
 849         struct usersupp usbuf;
 850
 851         if (!(CC->logged_in)) {
 852                 cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
 853                 return;
 854                 }
 855
 856         if (CC->usersupp.axlevel < 6) {
 857                 cprintf("%d Higher access required.\n",
 858                         ERROR+HIGHER_ACCESS_REQUIRED);
 859                 return;
 860                 }
 861
 862         if ((CitControl.MMflags&MM_VALID)==0) {
 863                 cprintf("%d There are no unvalidated users.\n",OK);
 864                 return;
 865                 }
 866
 867         /* There are unvalidated users.  Traverse the usersupp database,
 868          * and return the first user we find that needs validation.
 869          */
 870         cdb_rewind(CDB_USERSUPP);
 871         while (cdbus = cdb_next_item(CDB_USERSUPP), cdbus != NULL) {
 872                 memset(&usbuf, 0, sizeof(struct usersupp));
 873                 memcpy(&usbuf, cdbus->ptr,
 874                         ( (cdbus->len > sizeof(struct usersupp)) ?
 875                         sizeof(struct usersupp) : cdbus->len) );
 876                 cdb_free(cdbus);
 877                 if ((usbuf.flags & US_NEEDVALID)
 878                    &&(usbuf.axlevel > 0)) {
 879                         cprintf("%d %s\n",MORE_DATA,usbuf.fullname);
 880                         return;
 881                         }
 882                 }
 883
 884         /* If we get to this point, there are no more unvalidated users.
 885          * Therefore we clear the "users need validation" flag.
 886          */
 887
 888         begin_critical_section(S_CONTROL);
 889         get_control();
 890         CitControl.MMflags = CitControl.MMflags&(~MM_VALID);
 891         put_control();
 892         end_critical_section(S_CONTROL);
 893         cprintf("%d *** End of registration.\n",OK);
 894
 895
 896         }
 897
 898
 899 /*
 900  * get registration info for a user
 901  */
 902 void cmd_greg(char *who)
 903 {
 904         struct usersupp usbuf;
 905         int a,b;
 906         char pbuf[32];
 907
 908         if (!(CC->logged_in)) {
 909                 cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
 910                 return;
 911                 }
 912
 913         if (!strcasecmp(who,"_SELF_")) strcpy(who,CC->curr_user);
 914
 915         if ((CC->usersupp.axlevel < 6) && (strcasecmp(who,CC->curr_user))) {
 916                 cprintf("%d Higher access required.\n",
 917                         ERROR+HIGHER_ACCESS_REQUIRED);
 918                 return;
 919                 }
 920
 921         if (getuser(&usbuf,who) != 0) {
 922                 cprintf("%d '%s' not found.\n",ERROR+NO_SUCH_USER,who);
 923                 return;
 924                 }
 925
 926         cprintf("%d %s\n",LISTING_FOLLOWS,usbuf.fullname);
 927         cprintf("%ld\n",usbuf.usernum);
 928         cprintf("%s\n",usbuf.password);
 929         cprintf("%s\n",usbuf.USname);
 930         cprintf("%s\n",usbuf.USaddr);
 931         cprintf("%s\n%s\n%s\n",
 932                 usbuf.UScity,usbuf.USstate,usbuf.USzip);
 933         strcpy(pbuf,usbuf.USphone);
 934         usbuf.USphone[0]=0;
 935         for (a=0; a<strlen(pbuf); ++a) {
 936                 if ((pbuf[a]>='0')&&(pbuf[a]<='9')) {
 937                         b=strlen(usbuf.USphone);
 938                         usbuf.USphone[b]=pbuf[a];
 939                         usbuf.USphone[b+1]=0;
 940                         }
 941                 }
 942         while(strlen(usbuf.USphone)<10) {
 943                 strcpy(pbuf,usbuf.USphone);
 944                 strcpy(usbuf.USphone," ");
 945                 strcat(usbuf.USphone,pbuf);
 946                 }
 947
 948         cprintf("(%c%c%c) %c%c%c-%c%c%c%c\n",
 949                 usbuf.USphone[0],usbuf.USphone[1],
 950                 usbuf.USphone[2],usbuf.USphone[3],
 951                 usbuf.USphone[4],usbuf.USphone[5],
 952                 usbuf.USphone[6],usbuf.USphone[7],
 953                 usbuf.USphone[8],usbuf.USphone[9]);
 954
 955         cprintf("%d\n",usbuf.axlevel);
 956         cprintf("%s\n",usbuf.USemail);
 957         cprintf("000\n");
 958         }
 959
 960 /*
 961  * validate a user
 962  */
 963 void cmd_vali(char *v_args)
 964 {
 965         char user[256];
 966         int newax;
 967         struct usersupp userbuf;
 968
 969         extract(user,v_args,0);
 970         newax = extract_int(v_args,1);
 971
 972         if (!(CC->logged_in)) {
 973                 cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
 974                 return;
 975                 }
 976
 977         if (CC->usersupp.axlevel < 6) {
 978                 cprintf("%d Higher access required.\n",
 979                         ERROR+HIGHER_ACCESS_REQUIRED);
 980                 return;
 981                 }
 982
 983         if (lgetuser(&userbuf,user)!=0) {
 984                 cprintf("%d '%s' not found.\n",ERROR+NO_SUCH_USER,user);
 985                 return;
 986                 }
 987
 988         userbuf.axlevel = newax;
 989         userbuf.flags = (userbuf.flags & ~US_NEEDVALID);
 990
 991         lputuser(&userbuf,user);
 992
 993         /* If the access level was set to zero, delete the user */
 994         if (newax == 0) {
 995                 if (purge_user(user)==0) {
 996                         cprintf("%d %s Deleted.\n", OK, userbuf.fullname);
 997                         return;
 998                         }
 999                 }
1000
1001         cprintf("%d ok\n",OK);
1002         }
1003
1004
1005
1006 /*
1007  *  Traverse the user file...
1008  */
1009 void ForEachUser(void (*CallBack)(struct usersupp *EachUser)) {
1010         struct usersupp usbuf;
1011         struct cdbdata *cdbus;
1012
1013         cdb_rewind(CDB_USERSUPP);
1014
1015         while(cdbus = cdb_next_item(CDB_USERSUPP), cdbus != NULL) {
1016                 memset(&usbuf, 0, sizeof(struct usersupp));
1017                 memcpy(&usbuf, cdbus->ptr,
1018                         ( (cdbus->len > sizeof(struct usersupp)) ?
1019                         sizeof(struct usersupp) : cdbus->len) );
1020                 cdb_free(cdbus);
1021                 (*CallBack)(&usbuf);
1022                 }
1023         }
1024
1025
1026 /*
1027  * List one user (this works with cmd_list)
1028  */
1029 void ListThisUser(struct usersupp *usbuf) {
1030         if (usbuf->axlevel > 0) {
1031                 if ((CC->usersupp.axlevel>=6)
1032                    ||((usbuf->flags&US_UNLISTED)==0)
1033                    ||((CC->internal_pgm))) {
1034                         cprintf("%s|%d|%ld|%ld|%d|%d|",
1035                                 usbuf->fullname,
1036                                 usbuf->axlevel,
1037                                 usbuf->usernum,
1038                                 usbuf->lastcall,
1039                                 usbuf->timescalled,
1040                                 usbuf->posted);
1041                         if (CC->usersupp.axlevel >= 6)
1042                                 cprintf("%s",usbuf->password);
1043                         cprintf("\n");
1044                         }
1045                 }
1046         }
1047
1048 /*
1049  *  List users
1050  */
1051 void cmd_list(void) {
1052         cprintf("%d \n",LISTING_FOLLOWS);
1053         ForEachUser(ListThisUser);
1054         cprintf("000\n");
1055         }
1056
1057
1058 /*
1059  * enter registration info
1060  */
1061 void cmd_regi(void) {
1062         int a,b,c;
1063         char buf[256];
1064
1065         char tmpname[256];
1066         char tmpaddr[256];
1067         char tmpcity[256];
1068         char tmpstate[256];
1069         char tmpzip[256];
1070         char tmpphone[256];
1071         char tmpemail[256];
1072
1073         if (!(CC->logged_in)) {
1074                 cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
1075                 return;
1076                 }
1077
1078         strcpy(tmpname,"");
1079         strcpy(tmpaddr,"");
1080         strcpy(tmpcity,"");
1081         strcpy(tmpstate,"");
1082         strcpy(tmpzip,"");
1083         strcpy(tmpphone,"");
1084         strcpy(tmpemail,"");
1085
1086         cprintf("%d Send registration...\n",SEND_LISTING);
1087         a=0;
1088         while (client_gets(buf), strcmp(buf,"000")) {
1089                 if (a==0) strcpy(tmpname,buf);
1090                 if (a==1) strcpy(tmpaddr,buf);
1091                 if (a==2) strcpy(tmpcity,buf);
1092                 if (a==3) strcpy(tmpstate,buf);
1093                 if (a==4) {
1094                         for (c=0; c<strlen(buf); ++c) {
1095                                 if ((buf[c]>='0')&&(buf[c]<='9')) {
1096                                         b=strlen(tmpzip);
1097                                         tmpzip[b]=buf[c];
1098                                         tmpzip[b+1]=0;
1099                                         }
1100                                 }
1101                         }
1102                 if (a==5) {
1103                         for (c=0; c<strlen(buf); ++c) {
1104                                 if ((buf[c]>='0')&&(buf[c]<='9')) {
1105                                         b=strlen(tmpphone);
1106                                         tmpphone[b]=buf[c];
1107                                         tmpphone[b+1]=0;
1108                                         }
1109                                 }
1110                         }
1111                 if (a==6) strncpy(tmpemail,buf,31);
1112                 ++a;
1113                 }
1114
1115         tmpname[29]=0;
1116         tmpaddr[24]=0;
1117         tmpcity[14]=0;
1118         tmpstate[2]=0;
1119         tmpzip[9]=0;
1120         tmpphone[10]=0;
1121         tmpemail[31]=0;
1122
1123         lgetuser(&CC->usersupp,CC->curr_user);
1124         strcpy(CC->usersupp.USname,tmpname);
1125         strcpy(CC->usersupp.USaddr,tmpaddr);
1126         strcpy(CC->usersupp.UScity,tmpcity);
1127         strcpy(CC->usersupp.USstate,tmpstate);
1128         strcpy(CC->usersupp.USzip,tmpzip);
1129         strcpy(CC->usersupp.USphone,tmpphone);
1130         strcpy(CC->usersupp.USemail,tmpemail);
1131         CC->usersupp.flags=(CC->usersupp.flags|US_REGIS|US_NEEDVALID);
1132         lputuser(&CC->usersupp,CC->curr_user);
1133
1134         /* set global flag calling for validation */
1135         begin_critical_section(S_CONTROL);
1136         get_control();
1137         CitControl.MMflags = CitControl.MMflags | MM_VALID ;
1138         put_control();
1139         end_critical_section(S_CONTROL);
1140         }
1141
1142
1143 /*
1144  * assorted info we need to check at login
1145  */
1146 void cmd_chek(void) {
1147         int mail = 0;
1148         int regis = 0;
1149         int vali = 0;
1150
1151         if (!(CC->logged_in)) {
1152                 cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
1153                 return;
1154                 }
1155
1156         getuser(&CC->usersupp,CC->curr_user); /* no lock is needed here */
1157         if ((REGISCALL!=0)&&((CC->usersupp.flags&US_REGIS)==0)) regis = 1;
1158
1159         if (CC->usersupp.axlevel >= 6) {
1160                 get_control();
1161                 if (CitControl.MMflags&MM_VALID) vali = 1;
1162                 }
1163
1164
1165         /* check for mail */
1166         mail = NewMailCount();
1167
1168         cprintf("%d %d|%d|%d\n",OK,mail,regis,vali);
1169         }
1170
1171
1172 /*
1173  * check to see if a user exists
1174  */
1175 void cmd_qusr(char *who)
1176 {
1177         struct usersupp usbuf;
1178
1179         if (getuser(&usbuf,who) == 0) {
1180                 cprintf("%d %s\n",OK,usbuf.fullname);
1181                 }
1182         else {
1183                 cprintf("%d No such user.\n",ERROR+NO_SUCH_USER);
1184                 }
1185         }
1186
1187
1188 /*
1189  * enter user bio
1190  */
1191 void cmd_ebio(void) {
1192         char buf[256];
1193         FILE *fp;
1194
1195         if (!(CC->logged_in)) {
1196                 cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
1197                 return;
1198                 }
1199
1200         sprintf(buf,"./bio/%ld",CC->usersupp.usernum);
1201         fp = fopen(buf,"w");
1202         if (fp == NULL) {
1203                 cprintf("%d Cannot create file\n",ERROR);
1204                 return;
1205                 }
1206         cprintf("%d  \n",SEND_LISTING);
1207         while(client_gets(buf), strcmp(buf,"000")) {
1208                 fprintf(fp,"%s\n",buf);
1209                 }
1210         fclose(fp);
1211         }
1212
1213 /*
1214  * read user bio
1215  */
1216 void cmd_rbio(char *cmdbuf)
1217 {
1218         struct usersupp ruser;
1219         char buf[256];
1220         FILE *fp;
1221
1222         extract(buf,cmdbuf,0);
1223         if (getuser(&ruser,buf)!=0) {
1224                 cprintf("%d No such user.\n",ERROR+NO_SUCH_USER);
1225                 return;
1226                 }
1227         sprintf(buf,"./bio/%ld",ruser.usernum);
1228
1229         fp = fopen(buf,"r");
1230         if (fp == NULL) {
1231                 cprintf("%d %s has no bio on file.\n",
1232                         ERROR+FILE_NOT_FOUND,ruser.fullname);
1233                 return;
1234                 }
1235         cprintf("%d  \n",LISTING_FOLLOWS);
1236         while (fgets(buf,256,fp)!=NULL) cprintf("%s",buf);
1237         fclose(fp);
1238         cprintf("000\n");
1239         }
1240
1241 /*
1242  * list of users who have entered bios
1243  */
1244 void cmd_lbio(void) {
1245         char buf[256];
1246         FILE *ls;
1247         struct usersupp usbuf;
1248
1249         ls=popen("cd ./bio; ls","r");
1250         if (ls==NULL) {
1251                 cprintf("%d Cannot open listing.\n",ERROR+FILE_NOT_FOUND);
1252                 return;
1253                 }
1254
1255         cprintf("%d\n",LISTING_FOLLOWS);
1256         while (fgets(buf,255,ls)!=NULL)
1257                 if (getuserbynumber(&usbuf,atol(buf))==0)
1258                         cprintf("%s\n",usbuf.fullname);
1259         pclose(ls);
1260         cprintf("000\n");
1261         }
1262
1263
1264 /*
1265  * Administrative Get User Parameters
1266  */
1267 void cmd_agup(char *cmdbuf) {
1268         struct usersupp usbuf;
1269         char requested_user[256];
1270
1271         if ( (CC->internal_pgm==0)
1272            && ( (CC->logged_in == 0) || (is_aide()==0) ) ) {
1273                 cprintf("%d Higher access required.\n",
1274                         ERROR + HIGHER_ACCESS_REQUIRED);
1275                 return;
1276                 }
1277
1278         extract(requested_user, cmdbuf, 0);
1279         if (getuser(&usbuf, requested_user) != 0) {
1280                 cprintf("%d No such user.\n", ERROR + NO_SUCH_USER);
1281                 return;
1282                 }
1283
1284         cprintf("%d %s|%s|%u|%d|%d|%d|%ld|%ld|%d\n",
1285                 OK,
1286                 usbuf.fullname,
1287                 usbuf.password,
1288                 usbuf.flags,
1289                 usbuf.timescalled,
1290                 usbuf.posted,
1291                 (int)usbuf.axlevel,
1292                 usbuf.usernum,
1293                 usbuf.lastcall,
1294                 usbuf.USuserpurge);
1295         }
1296
1297
1298
1299 /*
1300  * Administrative Set User Parameters
1301  */
1302 void cmd_asup(char *cmdbuf) {
1303         struct usersupp usbuf;
1304         char requested_user[256];
1305         int np;
1306         int newax;
1307
1308         if ( (CC->internal_pgm==0)
1309            && ( (CC->logged_in == 0) || (is_aide()==0) ) ) {
1310                 cprintf("%d Higher access required.\n",
1311                         ERROR + HIGHER_ACCESS_REQUIRED);
1312                 return;
1313                 }
1314
1315         extract(requested_user, cmdbuf, 0);
1316         if (lgetuser(&usbuf, requested_user) != 0) {
1317                 cprintf("%d No such user.\n", ERROR + NO_SUCH_USER);
1318                 return;
1319                 }
1320
1321         np = num_parms(cmdbuf);
1322         if (np > 1) extract(usbuf.password, cmdbuf, 1);
1323         if (np > 2) usbuf.flags = extract_int(cmdbuf, 2);
1324         if (np > 3) usbuf.timescalled = extract_int(cmdbuf, 3);
1325         if (np > 4) usbuf.posted = extract_int(cmdbuf, 4);
1326         if (np > 5) {
1327                 newax = extract_int(cmdbuf, 5);
1328                 if ((newax >=0) && (newax <= 6)) {
1329                         usbuf.axlevel = extract_int(cmdbuf, 5);
1330                         }
1331                 }
1332         if (np > 7) {
1333                 usbuf.lastcall = extract_long(cmdbuf, 7);
1334                 }
1335         if (np > 8) {
1336                 usbuf.USuserpurge = extract_int(cmdbuf, 8);
1337                 }
1338
1339         lputuser(&usbuf, requested_user);
1340         if (usbuf.axlevel == 0) {
1341                 if (purge_user(requested_user)==0) {
1342                         cprintf("%d %s deleted.\n", OK, requested_user);
1343                         }
1344                 }
1345         cprintf("%d Ok\n", OK);
1346         }
1347
1348
1349 /*
1350  * Count the number of new mail messages the user has
1351  */
1352 int NewMailCount() {
1353         int num_newmsgs = 0;
1354         int a;
1355         char mailboxname[32];
1356         struct quickroom mailbox;
1357         struct visit vbuf;
1358
1359         MailboxName(mailboxname, &CC->usersupp, MAILROOM);
1360         if (getroom(&mailbox, mailboxname)!=0) return(0);
1361         CtdlGetRelationship(&vbuf, &CC->usersupp, &mailbox);
1362
1363         get_msglist(&mailbox);
1364         for (a=0; a<CC->num_msgs; ++a) {
1365                 if (MessageFromList(a)>0L) {
1366                         if (MessageFromList(a) > vbuf.v_lastseen) {
1367                                 ++num_newmsgs;
1368                                 }
1369                         }
1370                 }
1371
1372         return(num_newmsgs);
1373         }