1 // Server functions which perform operations on user objects.
3 // Copyright (c) 1987-2023 by the citadel.org team
5 // This program is open source software; you can redistribute it and/or
6 // modify it under the terms of the GNU General Public License, version 3.
13 #include <libcitadel.h>
16 #include "citserver.h"
18 #include "citadel_ldap.h"
19 #include "ctdl_module.h"
21 #include "makeuserkey.h"
22 #include "internet_addressing.h"
24 // These pipes are used to talk to the chkpwd daemon, which is forked during startup
25 int chkpwd_write_pipe[2];
26 int chkpwd_read_pipe[2];
29 // Compare two usernames to see if they are the same user after being keyed for the database
30 // Usage is identical to strcmp()
31 int CtdlUserCmp(char *s1, char *s2) {
32 char k1[USERNAME_SIZE];
33 char k2[USERNAME_SIZE];
37 return(strcmp(k1,k2));
41 // CtdlGetUser() retrieve named user into supplied buffer.
42 // returns 0 on success
43 int CtdlGetUser(struct ctdluser *usbuf, char *name) {
44 char usernamekey[USERNAME_SIZE];
45 struct cdbdata *cdbus;
48 memset(usbuf, 0, sizeof(struct ctdluser));
51 makeuserkey(usernamekey, name);
52 if (IsEmptyStr(usernamekey)) {
53 return(1); // empty user name
55 cdbus = cdb_fetch(CDB_USERS, usernamekey, strlen(usernamekey));
57 if (cdbus == NULL) { // user not found
61 memcpy(usbuf, cdbus->ptr, ((cdbus->len > sizeof(struct ctdluser)) ? sizeof(struct ctdluser) : cdbus->len));
68 int CtdlLockGetCurrentUser(void) {
69 return CtdlGetUser(&CC->user, CC->curr_user);
73 // CtdlGetUserLock() - same as getuser() but locks the record
74 int CtdlGetUserLock(struct ctdluser *usbuf, char *name) {
77 retcode = CtdlGetUser(usbuf, name);
79 begin_critical_section(S_USERS);
85 // CtdlPutUser() - write user buffer into the correct place on disk
86 void CtdlPutUser(struct ctdluser *usbuf) {
87 char usernamekey[USERNAME_SIZE];
88 makeuserkey(usernamekey, usbuf->fullname);
89 usbuf->version = REV_LEVEL;
90 cdb_store(CDB_USERS, usernamekey, strlen(usernamekey), usbuf, sizeof(struct ctdluser));
94 void CtdlPutCurrentUserLock() {
95 CtdlPutUser(&CC->user);
99 // CtdlPutUserLock() - same as putuser() but locks the record
100 void CtdlPutUserLock(struct ctdluser *usbuf) {
102 end_critical_section(S_USERS);
106 // rename_user() - this is tricky because the user's display name is the database key
107 // Returns 0 on success or nonzero if there was an error...
108 int rename_user(char *oldname, char *newname) {
109 int retcode = RENAMEUSER_OK;
110 struct ctdluser usbuf;
112 char oldnamekey[USERNAME_SIZE];
113 char newnamekey[USERNAME_SIZE];
115 // Create the database keys...
116 makeuserkey(oldnamekey, oldname);
117 makeuserkey(newnamekey, newname);
119 // Lock up and get going
120 begin_critical_section(S_USERS);
122 // We cannot rename a user who is currently logged in
123 if (CtdlIsUserLoggedIn(oldname)) {
124 end_critical_section(S_USERS);
125 return RENAMEUSER_LOGGED_IN;
128 if (CtdlGetUser(&usbuf, newname) == 0) {
129 retcode = RENAMEUSER_ALREADY_EXISTS;
133 if (CtdlGetUser(&usbuf, oldname) != 0) {
134 retcode = RENAMEUSER_NOT_FOUND;
136 else { // Sanity checks succeeded. Now rename the user.
137 if (usbuf.usernum == 0) {
138 syslog(LOG_DEBUG, "user_ops: can not rename user \"Citadel\".");
139 retcode = RENAMEUSER_NOT_FOUND;
142 syslog(LOG_DEBUG, "user_ops: renaming <%s> to <%s>", oldname, newname);
143 cdb_delete(CDB_USERS, oldnamekey, strlen(oldnamekey));
144 safestrncpy(usbuf.fullname, newname, sizeof usbuf.fullname);
146 cdb_store(CDB_USERSBYNUMBER, &usbuf.usernum, sizeof(long), usbuf.fullname, strlen(usbuf.fullname)+1 );
147 retcode = RENAMEUSER_OK;
153 end_critical_section(S_USERS);
158 // Convert a username into the format used as a database key prior to version 928
159 // This only gets called by reindex_user_928()
160 void makeuserkey_pre928(char *key, const char *username) {
163 int len = strlen(username);
165 if (len >= USERNAME_SIZE) {
166 syslog(LOG_INFO, "Username too long: %s", username);
167 len = USERNAME_SIZE - 1;
169 for (i=0; i<=len; ++i) {
170 key[i] = tolower(username[i]);
175 // Read a user record using the pre-v928 index format, and write it back using the v928-and-higher index format.
176 // This ONLY gets called during an upgrade from version <928 to version >=928.
177 void reindex_user_928(char *username, void *out_data) {
179 char oldkey[USERNAME_SIZE];
180 char newkey[USERNAME_SIZE];
181 struct cdbdata *cdbus;
182 struct ctdluser usbuf;
184 makeuserkey_pre928(oldkey, username);
185 makeuserkey(newkey, username);
187 syslog(LOG_DEBUG, "user_ops: reindex_user_928: %s <%s> --> <%s>", username, oldkey, newkey);
189 // Fetch the user record using the old index format
190 cdbus = cdb_fetch(CDB_USERS, oldkey, strlen(oldkey));
192 syslog(LOG_INFO, "user_ops: <%s> not found, were they already reindexed?", username);
195 memcpy(&usbuf, cdbus->ptr, ((cdbus->len > sizeof(struct ctdluser)) ? sizeof(struct ctdluser) : cdbus->len));
198 // delete the old record
199 cdb_delete(CDB_USERS, oldkey, strlen(oldkey));
201 // write the new record
202 cdb_store(CDB_USERS, newkey, strlen(newkey), &usbuf, sizeof(struct ctdluser));
206 // Index-generating function used by Ctdl[Get|Set]Relationship
207 int GenerateRelationshipIndex(char *IndexBuf, long RoomID, long RoomGen, long UserID) {
208 struct visit_index TheIndex;
209 TheIndex.iRoomID = RoomID;
210 TheIndex.iRoomGen = RoomGen;
211 TheIndex.iUserID = UserID;
213 memcpy(IndexBuf, &TheIndex, sizeof(TheIndex));
214 return(sizeof(TheIndex));
217 // Back end for CtdlSetRelationship()
218 void put_visit(struct visit *newvisit) {
219 cdb_store(CDB_VISIT, newvisit, (sizeof(long)*3), newvisit, sizeof(struct visit));
223 // Define a relationship between a user and a room
224 void CtdlSetRelationship(struct visit *newvisit, struct ctdluser *rel_user, struct ctdlroom *rel_room) {
225 // We don't use these in Citadel because they're implicit by the
226 // index, but they must be present if the database is exported.
227 newvisit->v_roomnum = rel_room->QRnumber;
228 newvisit->v_roomgen = rel_room->QRgen;
229 newvisit->v_usernum = rel_user->usernum;
236 // Locate a relationship between a user and a room
237 void CtdlGetRelationship(struct visit *vbuf, struct ctdluser *rel_user, struct ctdlroom *rel_room) {
238 struct cdbdata *cdbvisit;
240 // Clear out the buffer
241 memset(vbuf, 0, sizeof(struct visit));
243 // Fill out the first three fields; they are also the index
244 vbuf->v_roomnum = rel_room->QRnumber;
245 vbuf->v_roomgen = rel_room->QRgen;
246 vbuf->v_usernum = rel_user->usernum;
248 cdbvisit = cdb_fetch(CDB_VISIT, vbuf, (sizeof(long)*3));
249 if (cdbvisit != NULL) {
250 memcpy(vbuf, cdbvisit->ptr, ((cdbvisit->len > sizeof(struct visit)) ? sizeof(struct visit) : cdbvisit->len));
254 // If this is the first time the user has seen this room, set the view to be the default for the room.
255 vbuf->v_view = rel_room->QRdefaultview;
258 // Set v_seen if necessary
259 if (vbuf->v_seen[0] == 0) {
260 snprintf(vbuf->v_seen, sizeof vbuf->v_seen, "*:%ld", vbuf->v_lastseen);
265 void CtdlMailboxName(char *buf, size_t n, const struct ctdluser *who, const char *prefix) {
266 snprintf(buf, n, "%010ld.%s", who->usernum, prefix);
270 // Check to see if the specified user has Internet mail permission
271 // (returns nonzero if permission is granted)
272 int CtdlCheckInternetMailPermission(struct ctdluser *who) {
274 // Do not allow twits to send Internet mail
275 if (who->axlevel <= AxProbU) return(0);
278 if (CtdlGetConfigInt("c_restrict") == 0) return(1);
281 if (who->flags & US_INTERNET) return(2);
283 // Admin level access?
284 if (who->axlevel >= AxAideU) return(3);
291 // This is a convenience function which follows the Citadel protocol semantics for most commands.
292 // If the current user does not have the requested access level, it outputs a protocol-friendly error message
293 // and then returns (-1). This allows calling functions to complete an access level check in one line of code.
294 int CtdlAccessCheck(int required_level) {
295 if (CC->internal_pgm) return(0);
296 if (required_level >= ac_internal) {
297 cprintf("%d This is not a user-level command.\n", ERROR + HIGHER_ACCESS_REQUIRED);
301 if ((required_level >= ac_logged_in_or_guest) && (CC->logged_in == 0) && (CtdlGetConfigInt("c_guest_logins") == 0)) {
302 cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN);
306 if ((required_level >= ac_logged_in) && (CC->logged_in == 0)) {
307 cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN);
311 if (CC->user.axlevel >= AxAideU) return(0);
312 if (required_level >= ac_aide) {
313 cprintf("%d This command requires Admin access.\n",
314 ERROR + HIGHER_ACCESS_REQUIRED);
318 if (is_room_aide()) return(0);
319 if (required_level >= ac_room_aide) {
320 cprintf("%d This command requires Admin or Room Admin access.\n",
321 ERROR + HIGHER_ACCESS_REQUIRED);
325 // Do not generate any output if we succeeded -- the calling function will handle that.
330 // Is the user currently logged in an Admin?
332 if (CC->user.axlevel >= AxAideU) {
341 // Is the user currently logged in an Admin *or* the room Admin for this room?
342 int is_room_aide(void) {
343 if (!CC->logged_in) {
347 if ((CC->user.axlevel >= AxAideU) || (CC->room.QRroomaide == CC->user.usernum)) {
356 // CtdlGetUserByNumber() - get user by number, returns 0 if user was found
357 // Note: fetching a user this way requires one additional database operation.
358 int CtdlGetUserByNumber(struct ctdluser *usbuf, long number) {
359 struct cdbdata *cdbun;
362 cdbun = cdb_fetch(CDB_USERSBYNUMBER, &number, sizeof(long));
364 syslog(LOG_INFO, "user_ops: %ld not found", number);
368 syslog(LOG_INFO, "user_ops: %ld maps to %s", number, cdbun->ptr);
369 r = CtdlGetUser(usbuf, cdbun->ptr);
375 // Helper function for rebuild_usersbynumber()
376 void rebuild_ubn_for_user(char *username, void *data) {
379 syslog(LOG_DEBUG, "user_ops: rebuilding usersbynumber index for %s", username);
380 if (CtdlGetUser(&u, username) == 0) {
381 cdb_store(CDB_USERSBYNUMBER, &(u.usernum), sizeof(long), u.fullname, strlen(u.fullname)+1);
386 // Rebuild the users-by-number index
387 void rebuild_usersbynumber(void) {
388 cdb_trunc(CDB_USERSBYNUMBER); // delete the old indices
389 ForEachUser(rebuild_ubn_for_user, NULL); // enumerate the users
393 // getuserbyuid() Get user by system uid (for PAM mode authentication)
394 // Returns 0 if user was found
395 int getuserbyuid(struct ctdluser *usbuf, uid_t number) {
397 struct cdbdata *cdbus;
398 struct ctdluser *usptr;
399 int return_value = (-1);
401 // Yes, we do this the long way.
402 // No, we don't use CtdlForEachUser() because that requires multiple reads for each record
403 // TODO: make an index
404 cdb_rewind(CDB_USERS);
405 while (cdbus = cdb_next_item(CDB_USERS), cdbus != NULL) {
406 usptr = (struct ctdluser *) cdbus->ptr;
408 if (usptr->uid == number) {
409 syslog(LOG_DEBUG, "user_ops: found uid=%d username=%s", usptr->uid, usptr->fullname);
410 memcpy(usbuf, usptr, sizeof(struct ctdluser));
411 return_value = 0; // success
415 if (return_value != 0) {
416 syslog(LOG_DEBUG, "user_ops: no user found with uid=%d", number);
418 return(return_value);
422 // Back end for cmd_user() and its ilk
423 int CtdlLoginExistingUser(const char *trythisname) {
427 syslog(LOG_DEBUG, "user_ops: CtdlLoginExistingUser(%s)", trythisname);
429 if ((CC->logged_in)) {
430 return login_already_logged_in;
433 if (trythisname == NULL) return login_not_found;
435 // We handle this a different way now (see below)
436 //if (!strncasecmp(trythisname, "SYS_", 4)) {
437 //syslog(LOG_DEBUG, "user_ops: system user \"%s\" is not allowed to log in.", trythisname);
438 //return login_not_found;
441 // Continue attempting user validation...
442 safestrncpy(username, trythisname, sizeof (username));
443 string_trim(username);
445 if (IsEmptyStr(username)) {
446 return login_not_found;
450 if (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_HOST) {
452 struct passwd *tempPwdPtr;
455 syslog(LOG_DEBUG, "user_ops: asking host about <%s>", username);
456 #ifdef HAVE_GETPWNAM_R
457 syslog(LOG_DEBUG, "user_ops: calling getpwnam_r()");
458 getpwnam_r(username, &pd, pwdbuffer, sizeof pwdbuffer, &tempPwdPtr);
459 #else // HAVE_GETPWNAM_R
460 syslog(LOG_DEBUG, "user_ops: SHOULD NEVER GET HERE!!!");
462 #endif // HAVE_GETPWNAM_R
463 if (tempPwdPtr == NULL) {
464 syslog(LOG_DEBUG, "user_ops: no such user <%s>", username);
465 return login_not_found;
468 // Locate the associated Citadel account. If not found, make one attempt to create it.
469 found_user = getuserbyuid(&CC->user, pd.pw_uid);
470 if (found_user != 0) {
471 create_user(username, CREATE_USER_DO_NOT_BECOME_USER, pd.pw_uid);
472 found_user = getuserbyuid(&CC->user, pd.pw_uid);
474 syslog(LOG_DEBUG, "user_ops: found it: uid=%ld, gecos=%s here: %d", (long)pd.pw_uid, pd.pw_gecos, found_user);
479 else if ((CtdlGetConfigInt("c_auth_mode") == AUTHMODE_LDAP) || (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_LDAP_AD)) {
485 found_user = CtdlTryUserLDAP(username, ldap_dn, sizeof ldap_dn, ldap_cn, sizeof ldap_cn, &ldap_uid);
486 if (found_user != 0) {
487 return login_not_found;
490 found_user = getuserbyuid(&CC->user, ldap_uid);
491 if (found_user != 0) {
492 create_user(ldap_cn, CREATE_USER_DO_NOT_BECOME_USER, ldap_uid);
493 found_user = getuserbyuid(&CC->user, ldap_uid);
496 if (found_user == 0) {
497 if (CC->ldap_dn != NULL) free(CC->ldap_dn);
498 CC->ldap_dn = strdup(ldap_dn);
503 // native auth mode...
505 struct recptypes *valid = NULL;
507 // First, try to log in as if the supplied name is a display name
508 found_user = CtdlGetUser(&CC->user, username);
510 // If that didn't work, try to log in as if the supplied name * is an e-mail address
511 if (found_user != 0) {
512 valid = validate_recipients(username, NULL, 0);
514 if (valid->num_local == 1) {
515 found_user = CtdlGetUser(&CC->user, valid->recp_local);
517 free_recipients(valid);
522 // User 0 is a system account and must not be used by a real user
523 if (CC->user.usernum <= 0) {
524 syslog(LOG_DEBUG, "user_ops: system account <%s> is not allowed to log in.", trythisname);
525 return login_not_found;
528 // Did we find something?
529 if (found_user == 0) {
530 if (((CC->nologin)) && (CC->user.axlevel < AxAideU)) {
531 return login_too_many_users;
534 safestrncpy(CC->curr_user, CC->user.fullname, sizeof CC->curr_user);
538 return login_not_found;
542 // session startup code which is common to both cmd_pass() and cmd_newu()
543 void do_login(void) {
545 syslog(LOG_NOTICE, "user_ops: <%s> logged in", CC->curr_user);
547 CtdlGetUserLock(&CC->user, CC->curr_user);
548 CC->previous_login = CC->user.lastcall;
549 time(&CC->user.lastcall);
551 // If this user's name is the name of the system administrator
552 // (as specified in setup), automatically assign access level 6.
553 if ( (!IsEmptyStr(CtdlGetConfigStr("c_sysadm"))) && (!strcasecmp(CC->user.fullname, CtdlGetConfigStr("c_sysadm"))) ) {
554 CC->user.axlevel = AxAideU;
557 // If we're authenticating off the host system, automatically give root the highest level of access.
558 if (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_HOST) {
559 if (CC->user.uid == 0) {
560 CC->user.axlevel = AxAideU;
563 CtdlPutUserLock(&CC->user);
565 // If we are using LDAP authentication, extract the user's email addresses from the directory.
566 if ((CtdlGetConfigInt("c_auth_mode") == AUTHMODE_LDAP) || (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_LDAP_AD)) {
567 char new_emailaddrs[512];
568 if (CtdlGetConfigInt("c_ldap_sync_email_addrs") > 0) {
569 if (extract_email_addresses_from_ldap(CC->ldap_dn, new_emailaddrs) == 0) {
570 CtdlSetEmailAddressesForUser(CC->user.fullname, new_emailaddrs);
575 // If the user does not have any email addresses assigned, generate one.
576 if (IsEmptyStr(CC->user.emailaddrs)) {
577 AutoGenerateEmailAddressForUser(&CC->user);
580 // Populate the user principal identity, which is consistent and never aliased
581 strcpy(CC->cs_principal_id, "");
582 makeuserkey(CC->cs_principal_id, CC->user.fullname);
583 strcat(CC->cs_principal_id, "@");
584 strcat(CC->cs_principal_id, CtdlGetConfigStr("c_fqdn"));
586 // Populate cs_inet_email and cs_inet_other_emails with valid email addresses from the user record
587 strcpy(CC->cs_inet_email, CC->user.emailaddrs);
588 char *firstsep = strstr(CC->cs_inet_email, "|");
590 strcpy(CC->cs_inet_other_emails, firstsep+1);
594 CC->cs_inet_other_emails[0] = 0;
597 // Create any personal rooms required by the system.
598 // (Technically, MAILROOM should be there already, but just in case...)
599 CtdlCreateRoom(MAILROOM, 4, "", 0, 1, 0, VIEW_MAILBOX);
600 CtdlCreateRoom(SENTITEMS, 4, "", 0, 1, 0, VIEW_MAILBOX);
601 CtdlCreateRoom(USERTRASHROOM, 4, "", 0, 1, 0, VIEW_MAILBOX);
602 CtdlCreateRoom(USERDRAFTROOM, 4, "", 0, 1, 0, VIEW_MAILBOX);
604 // Run any startup routines registered by loadable modules
605 PerformSessionHooks(EVT_LOGIN);
608 CtdlUserGoto(CtdlGetConfigStr("c_baseroom"), 0, 0, NULL, NULL, NULL, NULL);
612 void logged_in_response(void) {
613 cprintf("%d %s|%d|0|0|%u|%ld|%ld\n",
614 CIT_OK, CC->user.fullname, CC->user.axlevel,
615 CC->user.flags, CC->user.usernum,
621 void CtdlUserLogout(void) {
623 syslog(LOG_DEBUG, "user_ops: CtdlUserLogout() logging out <%s> from session %d", CC->curr_user, CC->cs_pid);
625 // Run any hooks registered by modules...
626 PerformSessionHooks(EVT_LOGOUT);
628 // Clear out some session data. Most likely, the CitContext for this
629 // session is about to get nuked when the session disconnects, but
630 // since it's possible to log in again without reconnecting, we cannot
631 // make that assumption.
634 // Check to see if the user was deleted while logged in and purge them if necessary
635 if ((CC->user.axlevel == AxDeleted) && (CC->user.usernum)) {
636 purge_user(CC->user.fullname);
639 // Clear out the user record in memory so we don't behave like a ghost
640 memset(&CC->user, 0, sizeof(struct ctdluser));
641 CC->curr_user[0] = 0;
642 CC->cs_inet_email[0] = 0;
643 CC->cs_inet_other_emails[0] = 0;
644 CC->cs_inet_fn[0] = 0;
646 // Free any output buffers
651 // Validate a password on the host unix system by talking to the chkpwd daemon
652 static int validpw(uid_t uid, const char *pass) {
656 if (IsEmptyStr(pass)) {
657 syslog(LOG_DEBUG, "user_ops: refusing to chkpwd for uid=%d with empty password", uid);
661 syslog(LOG_DEBUG, "user_ops: validating password for uid=%d using chkpwd...", uid);
663 begin_critical_section(S_CHKPWD);
664 rv = write(chkpwd_write_pipe[1], &uid, sizeof(uid_t));
666 syslog(LOG_ERR, "user_ops: communication with chkpwd broken: %m");
667 end_critical_section(S_CHKPWD);
670 rv = write(chkpwd_write_pipe[1], pass, 256);
672 syslog(LOG_ERR, "user_ops: communication with chkpwd broken: %m");
673 end_critical_section(S_CHKPWD);
676 rv = read(chkpwd_read_pipe[0], buf, 4);
678 syslog(LOG_ERR, "user_ops: ommunication with chkpwd broken: %m");
679 end_critical_section(S_CHKPWD);
682 end_critical_section(S_CHKPWD);
684 if (!strncmp(buf, "PASS", 4)) {
685 syslog(LOG_DEBUG, "user_ops: chkpwd pass");
689 syslog(LOG_DEBUG, "user_ops: chkpwd fail");
694 // Start up the chkpwd daemon so validpw() has something to talk to
695 void start_chkpwd_daemon(void) {
697 struct stat filestats;
700 syslog(LOG_DEBUG, "user_ops: starting chkpwd daemon for host authentication mode");
702 if ((stat(file_chkpwd, &filestats)==-1) || (filestats.st_size==0)) {
703 syslog(LOG_ERR, "user_ops: %s: %m", file_chkpwd);
704 exit(CTDLEXIT_CHKPWD);
706 if (pipe(chkpwd_write_pipe) != 0) {
707 syslog(LOG_ERR, "user_ops: unable to create pipe for chkpwd daemon: %m");
708 exit(CTDLEXIT_CHKPWD);
710 if (pipe(chkpwd_read_pipe) != 0) {
711 syslog(LOG_ERR, "user_ops: unable to create pipe for chkpwd daemon: %m");
712 exit(CTDLEXIT_CHKPWD);
716 if (chkpwd_pid < 0) {
717 syslog(LOG_ERR, "user_ops: unable to fork chkpwd daemon: %m");
718 exit(CTDLEXIT_CHKPWD);
720 if (chkpwd_pid == 0) {
721 dup2(chkpwd_write_pipe[0], 0);
722 dup2(chkpwd_read_pipe[1], 1);
723 for (i=2; i<256; ++i) close(i);
724 execl(file_chkpwd, file_chkpwd, NULL);
725 syslog(LOG_ERR, "user_ops: unable to exec chkpwd daemon: %m");
731 int CtdlTryPassword(const char *password, long len) {
734 if ((CC->logged_in)) {
735 syslog(LOG_WARNING, "user_ops: CtdlTryPassword: already logged in");
736 return pass_already_logged_in;
738 if (!strcmp(CC->curr_user, NLI)) {
739 syslog(LOG_WARNING, "user_ops: CtdlTryPassword: no user selected");
742 if (CtdlGetUser(&CC->user, CC->curr_user)) {
743 syslog(LOG_ERR, "user_ops: CtdlTryPassword: internal error");
744 return pass_internal_error;
746 if (password == NULL) {
747 syslog(LOG_INFO, "user_ops: CtdlTryPassword: NULL password string supplied");
748 return pass_wrong_password;
752 else if (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_HOST) {
753 if (validpw(CC->user.uid, password)) {
756 // sooper-seekrit hack: populate the password field in the
757 // citadel database with the password that the user typed,
758 // if it's correct. This allows most sites to convert from
759 // host auth to native auth if they want to. If you think
760 // this is a security hazard, comment it out.
762 CtdlGetUserLock(&CC->user, CC->curr_user);
763 safestrncpy(CC->user.password, password, sizeof CC->user.password);
764 CtdlPutUserLock(&CC->user);
766 // (sooper-seekrit hack ends here)
774 else if ((CtdlGetConfigInt("c_auth_mode") == AUTHMODE_LDAP) || (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_LDAP_AD)) {
776 if ((CC->ldap_dn) && (!CtdlTryPasswordLDAP(CC->ldap_dn, password))) {
784 // native auth mode...
788 pw = (char*) malloc(len + 1);
789 memcpy(pw, password, len + 1);
791 strproc(CC->user.password);
792 code = strcasecmp(CC->user.password, pw);
795 strproc(CC->user.password);
796 code = strcasecmp(CC->user.password, pw);
806 syslog(LOG_WARNING, "user_ops: bad password specified for <%s> Service <%s> Port <%ld> Remote <%s / %s>",
813 return pass_wrong_password;
818 // Delete a user record *and* all of its related resources.
819 int purge_user(char pname[]) {
820 struct ctdluser usbuf;
821 char usernamekey[USERNAME_SIZE];
823 makeuserkey(usernamekey, pname);
825 // If the name is empty we can't find them in the DB any way so just return
826 if (IsEmptyStr(pname)) {
827 return(ERROR + NO_SUCH_USER);
830 if (CtdlGetUser(&usbuf, pname) != 0) {
831 syslog(LOG_ERR, "user_ops: cannot purge user <%s> - not found", pname);
832 return(ERROR + NO_SUCH_USER);
835 // Don't delete a user who is currently logged in. Instead, just
836 // set the access level to 0, and let the account get swept up
837 // during the next purge.
838 if (CtdlIsUserLoggedInByNum(usbuf.usernum)) {
839 syslog(LOG_WARNING, "user_ops: <%s> is logged in; not deleting", pname);
840 usbuf.axlevel = AxDeleted;
845 syslog(LOG_NOTICE, "user_ops: deleting <%s>", pname);
847 // Perform any purge functions registered by server extensions
848 PerformUserHooks(&usbuf, EVT_PURGEUSER);
850 // delete any existing user/room relationships
851 // Commenting out since it was assuming the user number was
852 // at the top of the index. Room number is actually first.
853 // Auto-Purge will clean up the records later, so not worth
854 // scanning all the records here.
855 //cdb_delete(CDB_VISIT, &usbuf.usernum, sizeof(long));
857 // delete the users-by-number index record
858 cdb_delete(CDB_USERSBYNUMBER, &usbuf.usernum, sizeof(long));
860 // delete the user entry
861 cdb_delete(CDB_USERS, usernamekey, strlen(usernamekey));
867 // This is the back end processing that happens when we create a new user account.
868 int internal_create_user(char *username, struct ctdluser *usbuf, uid_t uid) {
869 if (!CtdlGetUser(usbuf, username)) {
870 return(ERROR + ALREADY_EXISTS);
873 // Go ahead and initialize a new user record
874 memset(usbuf, 0, sizeof(struct ctdluser));
875 safestrncpy(usbuf->fullname, username, sizeof usbuf->fullname);
876 strcpy(usbuf->password, "");
879 // These are the default flags on new accounts
880 usbuf->flags = US_LASTOLD | US_DISAPPEAR | US_PAGINATOR | US_FLOORS;
881 usbuf->axlevel = CtdlGetConfigInt("c_initax");
882 usbuf->lastcall = time(NULL);
884 // fetch a new user number
885 usbuf->usernum = get_new_user_number();
887 // add user to the database
889 cdb_store(CDB_USERSBYNUMBER, &usbuf->usernum, sizeof(long), usbuf->fullname, strlen(usbuf->fullname)+1);
891 // If non-native auth, index by uid
892 if ((usbuf->uid > 0) && (usbuf->uid != NATIVE_AUTH_UID)) {
893 StrBuf *claimed_id = NewStrBuf();
894 StrBufPrintf(claimed_id, "uid:%d", usbuf->uid);
895 FreeStrBuf(&claimed_id);
902 // create_user() - back end processing to create a new user
904 // Set 'newusername' to the desired account name.
905 // Set 'become_user' to CREATE_USER_BECOME_USER if this is self-service account creation and we want to
906 // actually log in as the user we just created, otherwise set it to CREATE_USER_DO_NOT_BECOME_USER
907 // Set 'uid' to some uid_t value to associate the account with an external auth user, or (-1) for native auth
908 int create_user(char *username, int become_user, uid_t uid) {
909 struct ctdluser usbuf;
910 struct ctdlroom qrbuf;
911 char mailboxname[ROOMNAMELEN];
916 if ((retval = internal_create_user(username, &usbuf, uid)) != 0) {
920 // Give the user a private mailbox and a configuration room.
921 // Make the latter an invisible system room.
922 CtdlMailboxName(mailboxname, sizeof mailboxname, &usbuf, MAILROOM);
923 CtdlCreateRoom(mailboxname, 5, "", 0, 1, 1, VIEW_MAILBOX);
925 CtdlMailboxName(mailboxname, sizeof mailboxname, &usbuf, USERCONFIGROOM);
926 CtdlCreateRoom(mailboxname, 5, "", 0, 1, 1, VIEW_BBS);
927 if (CtdlGetRoomLock(&qrbuf, mailboxname) == 0) {
928 qrbuf.QRflags2 |= QR2_SYSTEM;
929 CtdlPutRoomLock(&qrbuf);
932 // Perform any create functions registered by server extensions
933 PerformUserHooks(&usbuf, EVT_NEWUSER);
935 // Everything below this line can be bypassed if administratively
936 // creating a user, instead of doing self-service account creation
938 if (become_user == CREATE_USER_BECOME_USER) {
939 // Now become the user we just created
940 memcpy(&CC->user, &usbuf, sizeof(struct ctdluser));
941 safestrncpy(CC->curr_user, username, sizeof CC->curr_user);
944 // Check to make sure we're still who we think we are
945 if (CtdlGetUser(&CC->user, CC->curr_user)) {
946 return(ERROR + INTERNAL_ERROR);
951 "New user account <%s> has been created, from host %s [%s].\n",
956 CtdlAideMessage(buf, "User Creation Notice");
957 syslog(LOG_NOTICE, "user_ops: <%s> created", username);
962 // set password - back end api code
963 void CtdlSetPassword(char *new_pw) {
964 CtdlGetUserLock(&CC->user, CC->curr_user);
965 safestrncpy(CC->user.password, new_pw, sizeof(CC->user.password));
966 CtdlPutUserLock(&CC->user);
967 syslog(LOG_INFO, "user_ops: password changed for <%s>", CC->curr_user);
968 PerformSessionHooks(EVT_SETPASS);
972 // API function for cmd_invt_kick() and anything else that needs to
973 // invite or kick out a user to/from a room.
975 // Set iuser to the name of the user, and op to 1=invite or 0=kick
976 int CtdlInvtKick(char *iuser, int op) {
977 struct ctdluser USscratch;
981 if (CtdlGetUser(&USscratch, iuser) != 0) {
985 CtdlGetRelationship(&vbuf, &USscratch, &CC->room);
987 vbuf.v_flags = vbuf.v_flags & ~V_FORGET & ~V_LOCKOUT;
988 vbuf.v_flags = vbuf.v_flags | V_ACCESS;
991 vbuf.v_flags = vbuf.v_flags & ~V_ACCESS;
992 vbuf.v_flags = vbuf.v_flags | V_FORGET | V_LOCKOUT;
994 CtdlSetRelationship(&vbuf, &USscratch, &CC->room);
996 // post a message in Aide> saying what we just did
997 snprintf(bbb, sizeof bbb, "%s has been %s \"%s\" by %s.\n",
999 ((op == 1) ? "invited to" : "kicked out of"),
1001 (CC->logged_in ? CC->user.fullname : "an administrator")
1003 CtdlAideMessage(bbb,"User Admin Message");
1008 // Forget (Zap) the current room (API call)
1009 // Returns 0 on success
1010 int CtdlForgetThisRoom(void) {
1013 // On some systems, Admins are not allowed to forget rooms
1014 if (is_aide() && (CtdlGetConfigInt("c_aide_zap") == 0)
1015 && ((CC->room.QRflags & QR_MAILBOX) == 0) ) {
1019 CtdlGetUserLock(&CC->user, CC->curr_user);
1020 CtdlGetRelationship(&vbuf, &CC->user, &CC->room);
1022 vbuf.v_flags = vbuf.v_flags | V_FORGET;
1023 vbuf.v_flags = vbuf.v_flags & ~V_ACCESS;
1025 CtdlSetRelationship(&vbuf, &CC->user, &CC->room);
1026 CtdlPutUserLock(&CC->user);
1028 // Return to the Lobby, so we don't end up in an undefined room
1029 CtdlUserGoto(CtdlGetConfigStr("c_baseroom"), 0, 0, NULL, NULL, NULL, NULL);
1034 // Traverse the user file and perform a callback for each user record.
1035 // (New improved version that runs in two phases so that callbacks can perform writes without having a r/o cursor open)
1036 void ForEachUser(void (*CallBack) (char *, void *out_data), void *in_data) {
1037 struct cdbdata *cdbus;
1038 struct ctdluser *usptr;
1040 Array *all_users = array_new(USERNAME_SIZE);
1041 if (all_users == NULL) {
1042 syslog(LOG_ERR, "user_ops: alloc failed, ForEachUser() exiting");
1046 // Phase 1 : build an array of all our user account names
1047 cdb_rewind(CDB_USERS);
1048 while (cdbus = cdb_next_item(CDB_USERS), cdbus != NULL) {
1049 usptr = (struct ctdluser *) cdbus->ptr;
1050 if (strlen(usptr->fullname) > 0) {
1051 array_append(all_users, usptr->fullname);
1055 // Phase 2 : perform the callback for each user while de-allocating the list
1056 for (int i=0; i<array_len(all_users); ++i) {
1057 (*CallBack) (array_get_element_at(all_users, i), in_data);
1060 // Phase 3 : free the array
1061 array_free(all_users);
1065 // Return the number of new messages that have arrived in the user's inbox while they were logged in.
1066 // Resets to zero when called.
1067 int NewMailCount() {
1068 int num_newmsgs = 0;
1069 num_newmsgs = CC->newmail;
1071 return(num_newmsgs);
1075 // Count the number of new mail messages the user has
1076 int InitialMailCheck() {
1077 int num_newmsgs = 0;
1079 char mailboxname[ROOMNAMELEN];
1080 struct ctdlroom mailbox;
1082 struct cdbdata *cdbfr;
1083 long *msglist = NULL;
1086 CtdlMailboxName(mailboxname, sizeof mailboxname, &CC->user, MAILROOM);
1087 if (CtdlGetRoom(&mailbox, mailboxname) != 0)
1089 CtdlGetRelationship(&vbuf, &CC->user, &mailbox);
1091 cdbfr = cdb_fetch(CDB_MSGLISTS, &mailbox.QRnumber, sizeof(long));
1093 if (cdbfr != NULL) {
1094 msglist = malloc(cdbfr->len);
1095 memcpy(msglist, cdbfr->ptr, cdbfr->len);
1096 num_msgs = cdbfr->len / sizeof(long);
1100 for (a = 0; a < num_msgs; ++a) {
1101 if (msglist[a] > 0L) {
1102 if (msglist[a] > vbuf.v_lastseen) {
1107 if (msglist != NULL)
1110 return(num_newmsgs);
1114 // This is an undocumented rescue mode that can be used to rewrite an admin user account that has been corrupted.
1115 // To prevent abuse, it can only run as a one-shot when the server is not otherwise operational.
1116 // Don't use this without asking about it.
1117 void undocumented_rescue_mode(char *rescue_string) {
1118 struct ctdluser usbuf;
1119 memset(&usbuf, 0, sizeof(struct ctdluser));
1120 extract_token(usbuf.fullname, rescue_string, 0, '|', sizeof usbuf.password);
1121 extract_token(usbuf.password, rescue_string, 1, '|', sizeof usbuf.password);
1122 usbuf.usernum = extract_long(rescue_string, 2);
1124 usbuf.lastcall = time(NULL);
1125 CtdlPutUser(&usbuf);