1 // Server functions which perform operations on user objects.
3 // Copyright (c) 1987-2022 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 "internet_addressing.h"
23 // These pipes are used to talk to the chkpwd daemon, which is forked during startup
24 int chkpwd_write_pipe[2];
25 int chkpwd_read_pipe[2];
28 // makeuserkey() - convert a username into the format used as a database key
29 // "key" must be a buffer of at least USERNAME_SIZE
30 // (Key format is the username with all non-alphanumeric characters removed, and converted to lower case.)
31 void makeuserkey(char *key, const char *username) {
35 if (IsEmptyStr(username)) {
40 int len = strlen(username);
41 for (i=0; ((i<=len) && (i<USERNAME_SIZE-1)); ++i) {
42 if (isalnum((username[i]))) {
43 key[keylen++] = tolower(username[i]);
50 // Compare two usernames to see if they are the same user after being keyed for the database
51 // Usage is identical to strcmp()
52 int CtdlUserCmp(char *s1, char *s2) {
53 char k1[USERNAME_SIZE];
54 char k2[USERNAME_SIZE];
58 return(strcmp(k1,k2));
62 // CtdlGetUser() retrieve named user into supplied buffer.
63 // returns 0 on success
64 int CtdlGetUser(struct ctdluser *usbuf, char *name) {
65 char usernamekey[USERNAME_SIZE];
66 struct cdbdata *cdbus;
69 memset(usbuf, 0, sizeof(struct ctdluser));
72 makeuserkey(usernamekey, name);
73 if (IsEmptyStr(usernamekey)) {
74 return(1); // empty user name
76 cdbus = cdb_fetch(CDB_USERS, usernamekey, strlen(usernamekey));
78 if (cdbus == NULL) { // user not found
82 memcpy(usbuf, cdbus->ptr, ((cdbus->len > sizeof(struct ctdluser)) ? sizeof(struct ctdluser) : cdbus->len));
89 int CtdlLockGetCurrentUser(void) {
90 return CtdlGetUser(&CC->user, CC->curr_user);
94 // CtdlGetUserLock() - same as getuser() but locks the record
95 int CtdlGetUserLock(struct ctdluser *usbuf, char *name) {
98 retcode = CtdlGetUser(usbuf, name);
100 begin_critical_section(S_USERS);
106 // CtdlPutUser() - write user buffer into the correct place on disk
107 void CtdlPutUser(struct ctdluser *usbuf) {
108 char usernamekey[USERNAME_SIZE];
109 makeuserkey(usernamekey, usbuf->fullname);
110 usbuf->version = REV_LEVEL;
111 cdb_store(CDB_USERS, usernamekey, strlen(usernamekey), usbuf, sizeof(struct ctdluser));
115 void CtdlPutCurrentUserLock() {
116 CtdlPutUser(&CC->user);
120 // CtdlPutUserLock() - same as putuser() but locks the record
121 void CtdlPutUserLock(struct ctdluser *usbuf) {
123 end_critical_section(S_USERS);
127 // rename_user() - this is tricky because the user's display name is the database key
128 // Returns 0 on success or nonzero if there was an error...
129 int rename_user(char *oldname, char *newname) {
130 int retcode = RENAMEUSER_OK;
131 struct ctdluser usbuf;
133 char oldnamekey[USERNAME_SIZE];
134 char newnamekey[USERNAME_SIZE];
136 // Create the database keys...
137 makeuserkey(oldnamekey, oldname);
138 makeuserkey(newnamekey, newname);
140 // Lock up and get going
141 begin_critical_section(S_USERS);
143 // We cannot rename a user who is currently logged in
144 if (CtdlIsUserLoggedIn(oldname)) {
145 end_critical_section(S_USERS);
146 return RENAMEUSER_LOGGED_IN;
149 if (CtdlGetUser(&usbuf, newname) == 0) {
150 retcode = RENAMEUSER_ALREADY_EXISTS;
154 if (CtdlGetUser(&usbuf, oldname) != 0) {
155 retcode = RENAMEUSER_NOT_FOUND;
157 else { // Sanity checks succeeded. Now rename the user.
158 if (usbuf.usernum == 0) {
159 syslog(LOG_DEBUG, "user_ops: can not rename user \"Citadel\".");
160 retcode = RENAMEUSER_NOT_FOUND;
163 syslog(LOG_DEBUG, "user_ops: renaming <%s> to <%s>", oldname, newname);
164 cdb_delete(CDB_USERS, oldnamekey, strlen(oldnamekey));
165 safestrncpy(usbuf.fullname, newname, sizeof usbuf.fullname);
167 cdb_store(CDB_USERSBYNUMBER, &usbuf.usernum, sizeof(long), usbuf.fullname, strlen(usbuf.fullname)+1 );
168 retcode = RENAMEUSER_OK;
174 end_critical_section(S_USERS);
179 // Convert a username into the format used as a database key prior to version 928
180 // This only gets called by reindex_user_928()
181 void makeuserkey_pre928(char *key, const char *username) {
184 int len = strlen(username);
186 if (len >= USERNAME_SIZE) {
187 syslog(LOG_INFO, "Username too long: %s", username);
188 len = USERNAME_SIZE - 1;
190 for (i=0; i<=len; ++i) {
191 key[i] = tolower(username[i]);
196 // Read a user record using the pre-v928 index format, and write it back using the v928-and-higher index format.
197 // This ONLY gets called during an upgrade from version <928 to version >=928.
198 void reindex_user_928(char *username, void *out_data) {
200 char oldkey[USERNAME_SIZE];
201 char newkey[USERNAME_SIZE];
202 struct cdbdata *cdbus;
203 struct ctdluser usbuf;
205 makeuserkey_pre928(oldkey, username);
206 makeuserkey(newkey, username);
208 syslog(LOG_DEBUG, "user_ops: reindex_user_928: %s <%s> --> <%s>", username, oldkey, newkey);
210 // Fetch the user record using the old index format
211 cdbus = cdb_fetch(CDB_USERS, oldkey, strlen(oldkey));
213 syslog(LOG_INFO, "user_ops: <%s> not found, were they already reindexed?", username);
216 memcpy(&usbuf, cdbus->ptr, ((cdbus->len > sizeof(struct ctdluser)) ? sizeof(struct ctdluser) : cdbus->len));
219 // delete the old record
220 cdb_delete(CDB_USERS, oldkey, strlen(oldkey));
222 // write the new record
223 cdb_store(CDB_USERS, newkey, strlen(newkey), &usbuf, sizeof(struct ctdluser));
227 // Index-generating function used by Ctdl[Get|Set]Relationship
228 int GenerateRelationshipIndex(char *IndexBuf,
239 TheIndex.iRoomID = RoomID;
240 TheIndex.iRoomGen = RoomGen;
241 TheIndex.iUserID = UserID;
243 memcpy(IndexBuf, &TheIndex, sizeof(TheIndex));
244 return(sizeof(TheIndex));
248 // Back end for CtdlSetRelationship()
249 void put_visit(struct visit *newvisit) {
253 memset(IndexBuf, 0, sizeof (IndexBuf));
255 IndexLen = GenerateRelationshipIndex(IndexBuf, newvisit->v_roomnum, newvisit->v_roomgen, newvisit->v_usernum);
258 cdb_store(CDB_VISIT, IndexBuf, IndexLen, newvisit, sizeof(struct visit));
262 // Define a relationship between a user and a room
263 void CtdlSetRelationship(struct visit *newvisit, struct ctdluser *rel_user, struct ctdlroom *rel_room) {
264 // We don't use these in Citadel because they're implicit by the
265 // index, but they must be present if the database is exported.
266 newvisit->v_roomnum = rel_room->QRnumber;
267 newvisit->v_roomgen = rel_room->QRgen;
268 newvisit->v_usernum = rel_user->usernum;
274 // Locate a relationship between a user and a room
275 void CtdlGetRelationship(struct visit *vbuf, struct ctdluser *rel_user, struct ctdlroom *rel_room) {
278 struct cdbdata *cdbvisit;
281 IndexLen = GenerateRelationshipIndex(IndexBuf, rel_room->QRnumber, rel_room->QRgen, rel_user->usernum);
283 // Clear out the buffer
284 memset(vbuf, 0, sizeof(struct visit));
286 cdbvisit = cdb_fetch(CDB_VISIT, IndexBuf, IndexLen);
287 if (cdbvisit != NULL) {
288 memcpy(vbuf, cdbvisit->ptr, ((cdbvisit->len > sizeof(struct visit)) ? sizeof(struct visit) : cdbvisit->len));
292 // If this is the first time the user has seen this room, set the view to be the default for the room.
293 vbuf->v_view = rel_room->QRdefaultview;
296 // Set v_seen if necessary
297 if (vbuf->v_seen[0] == 0) {
298 snprintf(vbuf->v_seen, sizeof vbuf->v_seen, "*:%ld", vbuf->v_lastseen);
303 void CtdlMailboxName(char *buf, size_t n, const struct ctdluser *who, const char *prefix) {
304 snprintf(buf, n, "%010ld.%s", who->usernum, prefix);
308 // Check to see if the specified user has Internet mail permission
309 // (returns nonzero if permission is granted)
310 int CtdlCheckInternetMailPermission(struct ctdluser *who) {
312 // Do not allow twits to send Internet mail
313 if (who->axlevel <= AxProbU) return(0);
316 if (CtdlGetConfigInt("c_restrict") == 0) return(1);
319 if (who->flags & US_INTERNET) return(2);
321 // Admin level access?
322 if (who->axlevel >= AxAideU) return(3);
329 // This is a convenience function which follows the Citadel protocol semantics for most commands.
330 // If the current user does not have the requested access level, it outputs a protocol-friendly error message
331 // and then returns (-1). This allows calling functions to complete an access level check in one line of code.
332 int CtdlAccessCheck(int required_level) {
333 if (CC->internal_pgm) return(0);
334 if (required_level >= ac_internal) {
335 cprintf("%d This is not a user-level command.\n", ERROR + HIGHER_ACCESS_REQUIRED);
339 if ((required_level >= ac_logged_in_or_guest) && (CC->logged_in == 0) && (CtdlGetConfigInt("c_guest_logins") == 0)) {
340 cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN);
344 if ((required_level >= ac_logged_in) && (CC->logged_in == 0)) {
345 cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN);
349 if (CC->user.axlevel >= AxAideU) return(0);
350 if (required_level >= ac_aide) {
351 cprintf("%d This command requires Admin access.\n",
352 ERROR + HIGHER_ACCESS_REQUIRED);
356 if (is_room_aide()) return(0);
357 if (required_level >= ac_room_aide) {
358 cprintf("%d This command requires Admin or Room Admin access.\n",
359 ERROR + HIGHER_ACCESS_REQUIRED);
363 // Do not generate any output if we succeeded -- the calling function will handle that.
368 // Is the user currently logged in an Admin?
370 if (CC->user.axlevel >= AxAideU) {
379 // Is the user currently logged in an Admin *or* the room Admin for this room?
380 int is_room_aide(void) {
381 if (!CC->logged_in) {
385 if ((CC->user.axlevel >= AxAideU) || (CC->room.QRroomaide == CC->user.usernum)) {
394 // CtdlGetUserByNumber() - get user by number, returns 0 if user was found
395 // Note: fetching a user this way requires one additional database operation.
396 int CtdlGetUserByNumber(struct ctdluser *usbuf, long number) {
397 struct cdbdata *cdbun;
400 cdbun = cdb_fetch(CDB_USERSBYNUMBER, &number, sizeof(long));
402 syslog(LOG_INFO, "user_ops: %ld not found", number);
406 syslog(LOG_INFO, "user_ops: %ld maps to %s", number, cdbun->ptr);
407 r = CtdlGetUser(usbuf, cdbun->ptr);
413 // Helper function for rebuild_usersbynumber()
414 void rebuild_ubn_for_user(char *username, void *data) {
417 syslog(LOG_DEBUG, "user_ops: rebuilding usersbynumber index for %s", username);
418 if (CtdlGetUser(&u, username) == 0) {
419 cdb_store(CDB_USERSBYNUMBER, &(u.usernum), sizeof(long), u.fullname, strlen(u.fullname)+1);
424 // Rebuild the users-by-number index
425 void rebuild_usersbynumber(void) {
426 cdb_trunc(CDB_USERSBYNUMBER); // delete the old indices
427 ForEachUser(rebuild_ubn_for_user, NULL); // enumerate the users
431 // getuserbyuid() Get user by system uid (for PAM mode authentication)
432 // Returns 0 if user was found
433 // This now uses an extauth index.
434 int getuserbyuid(struct ctdluser *usbuf, uid_t number) {
435 struct cdbdata *cdbextauth;
439 claimed_id = NewStrBuf();
440 StrBufPrintf(claimed_id, "uid:%d", number);
441 cdbextauth = cdb_fetch(CDB_EXTAUTH, ChrPtr(claimed_id), StrLength(claimed_id));
442 FreeStrBuf(&claimed_id);
443 if (cdbextauth == NULL) {
447 memcpy(&usernum, cdbextauth->ptr, sizeof(long));
448 cdb_free(cdbextauth);
450 if (!CtdlGetUserByNumber(usbuf, usernum)) {
458 // Back end for cmd_user() and its ilk
459 int CtdlLoginExistingUser(const char *trythisname) {
463 syslog(LOG_DEBUG, "user_ops: CtdlLoginExistingUser(%s)", trythisname);
465 if ((CC->logged_in)) {
466 return login_already_logged_in;
469 if (trythisname == NULL) return login_not_found;
471 // We handle this a different way now (see below)
472 //if (!strncasecmp(trythisname, "SYS_", 4)) {
473 //syslog(LOG_DEBUG, "user_ops: system user \"%s\" is not allowed to log in.", trythisname);
474 //return login_not_found;
477 // Continue attempting user validation...
478 safestrncpy(username, trythisname, sizeof (username));
479 string_trim(username);
481 if (IsEmptyStr(username)) {
482 return login_not_found;
486 if (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_HOST) {
488 struct passwd *tempPwdPtr;
491 syslog(LOG_DEBUG, "user_ops: asking host about <%s>", username);
492 #ifdef HAVE_GETPWNAM_R
493 syslog(LOG_DEBUG, "user_ops: calling getpwnam_r()");
494 getpwnam_r(username, &pd, pwdbuffer, sizeof pwdbuffer, &tempPwdPtr);
495 #else // HAVE_GETPWNAM_R
496 syslog(LOG_DEBUG, "user_ops: SHOULD NEVER GET HERE!!!");
498 #endif // HAVE_GETPWNAM_R
499 if (tempPwdPtr == NULL) {
500 syslog(LOG_DEBUG, "user_ops: no such user <%s>", username);
501 return login_not_found;
504 // Locate the associated Citadel account. If not found, make one attempt to create it.
505 found_user = getuserbyuid(&CC->user, pd.pw_uid);
506 if (found_user != 0) {
507 create_user(username, CREATE_USER_DO_NOT_BECOME_USER, pd.pw_uid);
508 found_user = getuserbyuid(&CC->user, pd.pw_uid);
510 syslog(LOG_DEBUG, "user_ops: found it: uid=%ld, gecos=%s here: %d", (long)pd.pw_uid, pd.pw_gecos, found_user);
515 else if ((CtdlGetConfigInt("c_auth_mode") == AUTHMODE_LDAP) || (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_LDAP_AD)) {
521 found_user = CtdlTryUserLDAP(username, ldap_dn, sizeof ldap_dn, ldap_cn, sizeof ldap_cn, &ldap_uid);
522 if (found_user != 0) {
523 return login_not_found;
526 found_user = getuserbyuid(&CC->user, ldap_uid);
527 if (found_user != 0) {
528 create_user(ldap_cn, CREATE_USER_DO_NOT_BECOME_USER, ldap_uid);
529 found_user = getuserbyuid(&CC->user, ldap_uid);
532 if (found_user == 0) {
533 if (CC->ldap_dn != NULL) free(CC->ldap_dn);
534 CC->ldap_dn = strdup(ldap_dn);
539 // native auth mode...
541 struct recptypes *valid = NULL;
543 // First, try to log in as if the supplied name is a display name
544 found_user = CtdlGetUser(&CC->user, username);
546 // If that didn't work, try to log in as if the supplied name * is an e-mail address
547 if (found_user != 0) {
548 valid = validate_recipients(username, NULL, 0);
550 if (valid->num_local == 1) {
551 found_user = CtdlGetUser(&CC->user, valid->recp_local);
553 free_recipients(valid);
558 // User 0 is a system account and must not be used by a real user
559 if (CC->user.usernum <= 0) {
560 syslog(LOG_DEBUG, "user_ops: system account <%s> is not allowed to log in.", trythisname);
561 return login_not_found;
564 // Did we find something?
565 if (found_user == 0) {
566 if (((CC->nologin)) && (CC->user.axlevel < AxAideU)) {
567 return login_too_many_users;
570 safestrncpy(CC->curr_user, CC->user.fullname, sizeof CC->curr_user);
574 return login_not_found;
578 // session startup code which is common to both cmd_pass() and cmd_newu()
579 void do_login(void) {
581 syslog(LOG_NOTICE, "user_ops: <%s> logged in", CC->curr_user);
583 CtdlGetUserLock(&CC->user, CC->curr_user);
584 ++(CC->user.timescalled);
585 CC->previous_login = CC->user.lastcall;
586 time(&CC->user.lastcall);
588 // If this user's name is the name of the system administrator
589 // (as specified in setup), automatically assign access level 6.
590 if ( (!IsEmptyStr(CtdlGetConfigStr("c_sysadm"))) && (!strcasecmp(CC->user.fullname, CtdlGetConfigStr("c_sysadm"))) ) {
591 CC->user.axlevel = AxAideU;
594 // If we're authenticating off the host system, automatically give root the highest level of access.
595 if (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_HOST) {
596 if (CC->user.uid == 0) {
597 CC->user.axlevel = AxAideU;
600 CtdlPutUserLock(&CC->user);
602 // If we are using LDAP authentication, extract the user's email addresses from the directory.
603 if ((CtdlGetConfigInt("c_auth_mode") == AUTHMODE_LDAP) || (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_LDAP_AD)) {
604 char new_emailaddrs[512];
605 if (CtdlGetConfigInt("c_ldap_sync_email_addrs") > 0) {
606 if (extract_email_addresses_from_ldap(CC->ldap_dn, new_emailaddrs) == 0) {
607 CtdlSetEmailAddressesForUser(CC->user.fullname, new_emailaddrs);
612 // If the user does not have any email addresses assigned, generate one.
613 if (IsEmptyStr(CC->user.emailaddrs)) {
614 AutoGenerateEmailAddressForUser(&CC->user);
617 // Populate the user principal identity, which is consistent and never aliased
618 strcpy(CC->cs_principal_id, "");
619 makeuserkey(CC->cs_principal_id, CC->user.fullname);
620 strcat(CC->cs_principal_id, "@");
621 strcat(CC->cs_principal_id, CtdlGetConfigStr("c_fqdn"));
623 // Populate cs_inet_email and cs_inet_other_emails with valid email addresses from the user record
624 strcpy(CC->cs_inet_email, CC->user.emailaddrs);
625 char *firstsep = strstr(CC->cs_inet_email, "|");
627 strcpy(CC->cs_inet_other_emails, firstsep+1);
631 CC->cs_inet_other_emails[0] = 0;
634 // Create any personal rooms required by the system.
635 // (Technically, MAILROOM should be there already, but just in case...)
636 CtdlCreateRoom(MAILROOM, 4, "", 0, 1, 0, VIEW_MAILBOX);
637 CtdlCreateRoom(SENTITEMS, 4, "", 0, 1, 0, VIEW_MAILBOX);
638 CtdlCreateRoom(USERTRASHROOM, 4, "", 0, 1, 0, VIEW_MAILBOX);
639 CtdlCreateRoom(USERDRAFTROOM, 4, "", 0, 1, 0, VIEW_MAILBOX);
641 // Run any startup routines registered by loadable modules
642 PerformSessionHooks(EVT_LOGIN);
645 CtdlUserGoto(CtdlGetConfigStr("c_baseroom"), 0, 0, NULL, NULL, NULL, NULL);
649 void logged_in_response(void) {
650 cprintf("%d %s|%d|%ld|%ld|%u|%ld|%ld\n",
651 CIT_OK, CC->user.fullname, CC->user.axlevel,
652 CC->user.timescalled, CC->user.posted,
653 CC->user.flags, CC->user.usernum,
659 void CtdlUserLogout(void) {
661 syslog(LOG_DEBUG, "user_ops: CtdlUserLogout() logging out <%s> from session %d", CC->curr_user, CC->cs_pid);
663 // Run any hooks registered by modules...
664 PerformSessionHooks(EVT_LOGOUT);
666 // Clear out some session data. Most likely, the CitContext for this
667 // session is about to get nuked when the session disconnects, but
668 // since it's possible to log in again without reconnecting, we cannot
669 // make that assumption.
672 // Check to see if the user was deleted while logged in and purge them if necessary
673 if ((CC->user.axlevel == AxDeleted) && (CC->user.usernum)) {
674 purge_user(CC->user.fullname);
677 // Clear out the user record in memory so we don't behave like a ghost
678 memset(&CC->user, 0, sizeof(struct ctdluser));
679 CC->curr_user[0] = 0;
680 CC->cs_inet_email[0] = 0;
681 CC->cs_inet_other_emails[0] = 0;
682 CC->cs_inet_fn[0] = 0;
684 // Free any output buffers
689 // Validate a password on the host unix system by talking to the chkpwd daemon
690 static int validpw(uid_t uid, const char *pass) {
694 if (IsEmptyStr(pass)) {
695 syslog(LOG_DEBUG, "user_ops: refusing to chkpwd for uid=%d with empty password", uid);
699 syslog(LOG_DEBUG, "user_ops: validating password for uid=%d using chkpwd...", uid);
701 begin_critical_section(S_CHKPWD);
702 rv = write(chkpwd_write_pipe[1], &uid, sizeof(uid_t));
704 syslog(LOG_ERR, "user_ops: communication with chkpwd broken: %m");
705 end_critical_section(S_CHKPWD);
708 rv = write(chkpwd_write_pipe[1], pass, 256);
710 syslog(LOG_ERR, "user_ops: communication with chkpwd broken: %m");
711 end_critical_section(S_CHKPWD);
714 rv = read(chkpwd_read_pipe[0], buf, 4);
716 syslog(LOG_ERR, "user_ops: ommunication with chkpwd broken: %m");
717 end_critical_section(S_CHKPWD);
720 end_critical_section(S_CHKPWD);
722 if (!strncmp(buf, "PASS", 4)) {
723 syslog(LOG_DEBUG, "user_ops: chkpwd pass");
727 syslog(LOG_DEBUG, "user_ops: chkpwd fail");
732 // Start up the chkpwd daemon so validpw() has something to talk to
733 void start_chkpwd_daemon(void) {
735 struct stat filestats;
738 syslog(LOG_DEBUG, "user_ops: starting chkpwd daemon for host authentication mode");
740 if ((stat(file_chkpwd, &filestats)==-1) || (filestats.st_size==0)) {
741 syslog(LOG_ERR, "user_ops: %s: %m", file_chkpwd);
744 if (pipe(chkpwd_write_pipe) != 0) {
745 syslog(LOG_ERR, "user_ops: unable to create pipe for chkpwd daemon: %m");
748 if (pipe(chkpwd_read_pipe) != 0) {
749 syslog(LOG_ERR, "user_ops: unable to create pipe for chkpwd daemon: %m");
754 if (chkpwd_pid < 0) {
755 syslog(LOG_ERR, "user_ops: unable to fork chkpwd daemon: %m");
758 if (chkpwd_pid == 0) {
759 dup2(chkpwd_write_pipe[0], 0);
760 dup2(chkpwd_read_pipe[1], 1);
761 for (i=2; i<256; ++i) close(i);
762 execl(file_chkpwd, file_chkpwd, NULL);
763 syslog(LOG_ERR, "user_ops: unable to exec chkpwd daemon: %m");
770 int CtdlTryPassword(const char *password, long len) {
773 if ((CC->logged_in)) {
774 syslog(LOG_WARNING, "user_ops: CtdlTryPassword: already logged in");
775 return pass_already_logged_in;
777 if (!strcmp(CC->curr_user, NLI)) {
778 syslog(LOG_WARNING, "user_ops: CtdlTryPassword: no user selected");
781 if (CtdlGetUser(&CC->user, CC->curr_user)) {
782 syslog(LOG_ERR, "user_ops: CtdlTryPassword: internal error");
783 return pass_internal_error;
785 if (password == NULL) {
786 syslog(LOG_INFO, "user_ops: CtdlTryPassword: NULL password string supplied");
787 return pass_wrong_password;
791 else if (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_HOST) {
792 if (validpw(CC->user.uid, password)) {
795 // sooper-seekrit hack: populate the password field in the
796 // citadel database with the password that the user typed,
797 // if it's correct. This allows most sites to convert from
798 // host auth to native auth if they want to. If you think
799 // this is a security hazard, comment it out.
801 CtdlGetUserLock(&CC->user, CC->curr_user);
802 safestrncpy(CC->user.password, password, sizeof CC->user.password);
803 CtdlPutUserLock(&CC->user);
805 // (sooper-seekrit hack ends here)
813 else if ((CtdlGetConfigInt("c_auth_mode") == AUTHMODE_LDAP) || (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_LDAP_AD)) {
815 if ((CC->ldap_dn) && (!CtdlTryPasswordLDAP(CC->ldap_dn, password))) {
823 // native auth mode...
827 pw = (char*) malloc(len + 1);
828 memcpy(pw, password, len + 1);
830 strproc(CC->user.password);
831 code = strcasecmp(CC->user.password, pw);
834 strproc(CC->user.password);
835 code = strcasecmp(CC->user.password, pw);
845 syslog(LOG_WARNING, "user_ops: bad password specified for <%s> Service <%s> Port <%ld> Remote <%s / %s>",
852 return pass_wrong_password;
857 // Delete a user record *and* all of its related resources.
858 int purge_user(char pname[]) {
859 struct ctdluser usbuf;
860 char usernamekey[USERNAME_SIZE];
862 makeuserkey(usernamekey, pname);
864 // If the name is empty we can't find them in the DB any way so just return
865 if (IsEmptyStr(pname)) {
866 return(ERROR + NO_SUCH_USER);
869 if (CtdlGetUser(&usbuf, pname) != 0) {
870 syslog(LOG_ERR, "user_ops: cannot purge user <%s> - not found", pname);
871 return(ERROR + NO_SUCH_USER);
874 // Don't delete a user who is currently logged in. Instead, just
875 // set the access level to 0, and let the account get swept up
876 // during the next purge.
877 if (CtdlIsUserLoggedInByNum(usbuf.usernum)) {
878 syslog(LOG_WARNING, "user_ops: <%s> is logged in; not deleting", pname);
879 usbuf.axlevel = AxDeleted;
884 syslog(LOG_NOTICE, "user_ops: deleting <%s>", pname);
886 // Perform any purge functions registered by server extensions
887 PerformUserHooks(&usbuf, EVT_PURGEUSER);
889 // delete any existing user/room relationships
890 cdb_delete(CDB_VISIT, &usbuf.usernum, sizeof(long));
892 // delete the users-by-number index record
893 cdb_delete(CDB_USERSBYNUMBER, &usbuf.usernum, sizeof(long));
895 // delete the user entry
896 cdb_delete(CDB_USERS, usernamekey, strlen(usernamekey));
902 // This is the back end processing that happens when we create a new user account.
903 int internal_create_user(char *username, struct ctdluser *usbuf, uid_t uid) {
904 if (!CtdlGetUser(usbuf, username)) {
905 return(ERROR + ALREADY_EXISTS);
908 // Go ahead and initialize a new user record
909 memset(usbuf, 0, sizeof(struct ctdluser));
910 safestrncpy(usbuf->fullname, username, sizeof usbuf->fullname);
911 strcpy(usbuf->password, "");
914 // These are the default flags on new accounts
915 usbuf->flags = US_LASTOLD | US_DISAPPEAR | US_PAGINATOR | US_FLOORS;
917 usbuf->timescalled = 0;
919 usbuf->axlevel = CtdlGetConfigInt("c_initax");
920 usbuf->lastcall = time(NULL);
922 // fetch a new user number
923 usbuf->usernum = get_new_user_number();
925 // add user to the database
927 cdb_store(CDB_USERSBYNUMBER, &usbuf->usernum, sizeof(long), usbuf->fullname, strlen(usbuf->fullname)+1);
929 // If non-native auth, index by uid
930 if ((usbuf->uid > 0) && (usbuf->uid != NATIVE_AUTH_UID)) {
931 StrBuf *claimed_id = NewStrBuf();
932 StrBufPrintf(claimed_id, "uid:%d", usbuf->uid);
933 attach_extauth(usbuf, claimed_id);
934 FreeStrBuf(&claimed_id);
941 // create_user() - back end processing to create a new user
943 // Set 'newusername' to the desired account name.
944 // Set 'become_user' to CREATE_USER_BECOME_USER if this is self-service account creation and we want to
945 // actually log in as the user we just created, otherwise set it to CREATE_USER_DO_NOT_BECOME_USER
946 // Set 'uid' to some uid_t value to associate the account with an external auth user, or (-1) for native auth
947 int create_user(char *username, int become_user, uid_t uid) {
948 struct ctdluser usbuf;
949 struct ctdlroom qrbuf;
950 char mailboxname[ROOMNAMELEN];
955 if ((retval = internal_create_user(username, &usbuf, uid)) != 0) {
959 // Give the user a private mailbox and a configuration room.
960 // Make the latter an invisible system room.
961 CtdlMailboxName(mailboxname, sizeof mailboxname, &usbuf, MAILROOM);
962 CtdlCreateRoom(mailboxname, 5, "", 0, 1, 1, VIEW_MAILBOX);
964 CtdlMailboxName(mailboxname, sizeof mailboxname, &usbuf, USERCONFIGROOM);
965 CtdlCreateRoom(mailboxname, 5, "", 0, 1, 1, VIEW_BBS);
966 if (CtdlGetRoomLock(&qrbuf, mailboxname) == 0) {
967 qrbuf.QRflags2 |= QR2_SYSTEM;
968 CtdlPutRoomLock(&qrbuf);
971 // Perform any create functions registered by server extensions
972 PerformUserHooks(&usbuf, EVT_NEWUSER);
974 // Everything below this line can be bypassed if administratively
975 // creating a user, instead of doing self-service account creation
977 if (become_user == CREATE_USER_BECOME_USER) {
978 // Now become the user we just created
979 memcpy(&CC->user, &usbuf, sizeof(struct ctdluser));
980 safestrncpy(CC->curr_user, username, sizeof CC->curr_user);
983 // Check to make sure we're still who we think we are
984 if (CtdlGetUser(&CC->user, CC->curr_user)) {
985 return(ERROR + INTERNAL_ERROR);
990 "New user account <%s> has been created, from host %s [%s].\n",
995 CtdlAideMessage(buf, "User Creation Notice");
996 syslog(LOG_NOTICE, "user_ops: <%s> created", username);
1001 // set password - back end api code
1002 void CtdlSetPassword(char *new_pw) {
1003 CtdlGetUserLock(&CC->user, CC->curr_user);
1004 safestrncpy(CC->user.password, new_pw, sizeof(CC->user.password));
1005 CtdlPutUserLock(&CC->user);
1006 syslog(LOG_INFO, "user_ops: password changed for <%s>", CC->curr_user);
1007 PerformSessionHooks(EVT_SETPASS);
1011 // API function for cmd_invt_kick() and anything else that needs to
1012 // invite or kick out a user to/from a room.
1014 // Set iuser to the name of the user, and op to 1=invite or 0=kick
1015 int CtdlInvtKick(char *iuser, int op) {
1016 struct ctdluser USscratch;
1020 if (CtdlGetUser(&USscratch, iuser) != 0) {
1024 CtdlGetRelationship(&vbuf, &USscratch, &CC->room);
1026 vbuf.v_flags = vbuf.v_flags & ~V_FORGET & ~V_LOCKOUT;
1027 vbuf.v_flags = vbuf.v_flags | V_ACCESS;
1030 vbuf.v_flags = vbuf.v_flags & ~V_ACCESS;
1031 vbuf.v_flags = vbuf.v_flags | V_FORGET | V_LOCKOUT;
1033 CtdlSetRelationship(&vbuf, &USscratch, &CC->room);
1035 // post a message in Aide> saying what we just did
1036 snprintf(bbb, sizeof bbb, "%s has been %s \"%s\" by %s.\n",
1038 ((op == 1) ? "invited to" : "kicked out of"),
1040 (CC->logged_in ? CC->user.fullname : "an administrator")
1042 CtdlAideMessage(bbb,"User Admin Message");
1047 // Forget (Zap) the current room (API call)
1048 // Returns 0 on success
1049 int CtdlForgetThisRoom(void) {
1052 // On some systems, Admins are not allowed to forget rooms
1053 if (is_aide() && (CtdlGetConfigInt("c_aide_zap") == 0)
1054 && ((CC->room.QRflags & QR_MAILBOX) == 0) ) {
1058 CtdlGetUserLock(&CC->user, CC->curr_user);
1059 CtdlGetRelationship(&vbuf, &CC->user, &CC->room);
1061 vbuf.v_flags = vbuf.v_flags | V_FORGET;
1062 vbuf.v_flags = vbuf.v_flags & ~V_ACCESS;
1064 CtdlSetRelationship(&vbuf, &CC->user, &CC->room);
1065 CtdlPutUserLock(&CC->user);
1067 // Return to the Lobby, so we don't end up in an undefined room
1068 CtdlUserGoto(CtdlGetConfigStr("c_baseroom"), 0, 0, NULL, NULL, NULL, NULL);
1073 // Traverse the user file and perform a callback for each user record.
1074 // (New improved version that runs in two phases so that callbacks can perform writes without having a r/o cursor open)
1075 void ForEachUser(void (*CallBack) (char *, void *out_data), void *in_data) {
1076 struct cdbdata *cdbus;
1077 struct ctdluser *usptr;
1081 char username[USERNAME_SIZE];
1083 struct feu *ufirst = NULL;
1084 struct feu *ulast = NULL;
1085 struct feu *f = NULL;
1087 cdb_rewind(CDB_USERS);
1089 // Phase 1 : build a linked list of all our user account names
1090 while (cdbus = cdb_next_item(CDB_USERS), cdbus != NULL) {
1091 usptr = (struct ctdluser *) cdbus->ptr;
1093 if (strlen(usptr->fullname) > 0) {
1094 f = malloc(sizeof(struct feu));
1096 strncpy(f->username, usptr->fullname, USERNAME_SIZE);
1098 if (ufirst == NULL) {
1109 // Phase 2 : perform the callback for each user while de-allocating the list
1110 while (ufirst != NULL) {
1111 (*CallBack) (ufirst->username, in_data);
1113 ufirst = ufirst->next;
1119 // Return the number of new messages that have arrived in the user's inbox while they were logged in.
1120 // Resets to zero when called.
1121 int NewMailCount() {
1122 int num_newmsgs = 0;
1123 num_newmsgs = CC->newmail;
1125 return(num_newmsgs);
1129 // Count the number of new mail messages the user has
1130 int InitialMailCheck() {
1131 int num_newmsgs = 0;
1133 char mailboxname[ROOMNAMELEN];
1134 struct ctdlroom mailbox;
1136 struct cdbdata *cdbfr;
1137 long *msglist = NULL;
1140 CtdlMailboxName(mailboxname, sizeof mailboxname, &CC->user, MAILROOM);
1141 if (CtdlGetRoom(&mailbox, mailboxname) != 0)
1143 CtdlGetRelationship(&vbuf, &CC->user, &mailbox);
1145 cdbfr = cdb_fetch(CDB_MSGLISTS, &mailbox.QRnumber, sizeof(long));
1147 if (cdbfr != NULL) {
1148 msglist = malloc(cdbfr->len);
1149 memcpy(msglist, cdbfr->ptr, cdbfr->len);
1150 num_msgs = cdbfr->len / sizeof(long);
1154 for (a = 0; a < num_msgs; ++a) {
1155 if (msglist[a] > 0L) {
1156 if (msglist[a] > vbuf.v_lastseen) {
1161 if (msglist != NULL)
1164 return(num_newmsgs);