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