X-Git-Url: https://code.citadel.org/?a=blobdiff_plain;f=citadel%2Fuser_ops.c;h=f8c74445d9a89bd3ed4068042bb511fe6b85fd1c;hb=HEAD;hp=9a39b06b6754b7b4c940fbd0e06acf0959476411;hpb=6d624cc4161ba0ce4892a7e7aaee7fd89dffa245;p=citadel.git diff --git a/citadel/user_ops.c b/citadel/user_ops.c deleted file mode 100644 index 9a39b06b6..000000000 --- a/citadel/user_ops.c +++ /dev/null @@ -1,1285 +0,0 @@ -/* - * Server functions which perform operations on user objects. - * - * Copyright (c) 1987-2019 by the citadel.org team - * - * This program is open source software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License, version 3. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#include -#include -#include "sysdep.h" -#include -#include -#include -#include "control.h" -#include "support.h" -#include "citserver.h" -#include "config.h" -#include "citadel_ldap.h" -#include "ctdl_module.h" -#include "user_ops.h" -#include "internet_addressing.h" - -/* These pipes are used to talk to the chkpwd daemon, which is forked during startup */ -int chkpwd_write_pipe[2]; -int chkpwd_read_pipe[2]; - - -/* - * Trim a string down to the maximum username size and return the new length - */ -long cutusername(char *username) { - long len; - len = strlen(username); - if (len >= USERNAME_SIZE) - { - syslog(LOG_INFO, "Username too long: %s", username); - len = USERNAME_SIZE - 1; - username[len]='\0'; - } - return len; -} - - -/* - * makeuserkey() - convert a username into the format used as a database key - * (Key format is the username with all non-alphanumeric characters removed, and converted to lower case.) - */ -void makeuserkey(char *key, const char *username, long len) { - int i; - int keylen = 0; - - if (len >= USERNAME_SIZE) { - syslog(LOG_INFO, "Username too long: %s", username); - len = USERNAME_SIZE - 1; - } - for (i=0; i<=len; ++i) { - if (isalnum((username[i]))) { - key[keylen++] = tolower(username[i]); - } - } - key[keylen++] = 0; -} - - -/* - * CtdlGetUser() retrieve named user into supplied buffer. - * returns 0 on success - */ -int CtdlGetUser(struct ctdluser *usbuf, char *name) -{ - char usernamekey[USERNAME_SIZE]; - struct cdbdata *cdbus; - long len = cutusername(name); - - if (usbuf != NULL) { - memset(usbuf, 0, sizeof(struct ctdluser)); - } - - makeuserkey(usernamekey, name, len); - cdbus = cdb_fetch(CDB_USERS, usernamekey, strlen(usernamekey)); - - if (cdbus == NULL) { /* user not found */ - return(1); - } - if (usbuf != NULL) { - memcpy(usbuf, cdbus->ptr, ((cdbus->len > sizeof(struct ctdluser)) ? sizeof(struct ctdluser) : cdbus->len)); - } - cdb_free(cdbus); - return(0); -} - - -int CtdlLockGetCurrentUser(void) -{ - CitContext *CCC = CC; - return CtdlGetUser(&CCC->user, CCC->curr_user); -} - - -/* - * CtdlGetUserLock() - same as getuser() but locks the record - */ -int CtdlGetUserLock(struct ctdluser *usbuf, char *name) -{ - int retcode; - - retcode = CtdlGetUser(usbuf, name); - if (retcode == 0) { - begin_critical_section(S_USERS); - } - return(retcode); -} - - -/* - * CtdlPutUser() - write user buffer into the correct place on disk - */ -void CtdlPutUser(struct ctdluser *usbuf) -{ - char usernamekey[USERNAME_SIZE]; - - makeuserkey(usernamekey, usbuf->fullname, cutusername(usbuf->fullname)); - usbuf->version = REV_LEVEL; - cdb_store(CDB_USERS, usernamekey, strlen(usernamekey), usbuf, sizeof(struct ctdluser)); -} - - -void CtdlPutCurrentUserLock() -{ - CtdlPutUser(&CC->user); -} - - -/* - * CtdlPutUserLock() - same as putuser() but locks the record - */ -void CtdlPutUserLock(struct ctdluser *usbuf) -{ - CtdlPutUser(usbuf); - end_critical_section(S_USERS); -} - - -/* - * rename_user() - this is tricky because the user's display name is the database key - * - * Returns 0 on success or nonzero if there was an error... - * - */ -int rename_user(char *oldname, char *newname) { - int retcode = RENAMEUSER_OK; - struct ctdluser usbuf; - - char oldnamekey[USERNAME_SIZE]; - char newnamekey[USERNAME_SIZE]; - - /* Create the database keys... */ - makeuserkey(oldnamekey, oldname, cutusername(oldname)); - makeuserkey(newnamekey, newname, cutusername(newname)); - - /* Lock up and get going */ - begin_critical_section(S_USERS); - - /* We cannot rename a user who is currently logged in */ - if (CtdlIsUserLoggedIn(oldname)) { - end_critical_section(S_USERS); - return RENAMEUSER_LOGGED_IN; - } - - if (CtdlGetUser(&usbuf, newname) == 0) { - retcode = RENAMEUSER_ALREADY_EXISTS; - } - else { - - if (CtdlGetUser(&usbuf, oldname) != 0) { - retcode = RENAMEUSER_NOT_FOUND; - } - else { /* Sanity checks succeeded. Now rename the user. */ - if (usbuf.usernum == 0) { - syslog(LOG_DEBUG, "user_ops: can not rename user \"Citadel\"."); - retcode = RENAMEUSER_NOT_FOUND; - } else { - syslog(LOG_DEBUG, "user_ops: renaming <%s> to <%s>", oldname, newname); - cdb_delete(CDB_USERS, oldnamekey, strlen(oldnamekey)); - safestrncpy(usbuf.fullname, newname, sizeof usbuf.fullname); - CtdlPutUser(&usbuf); - cdb_store(CDB_USERSBYNUMBER, &usbuf.usernum, sizeof(long), usbuf.fullname, strlen(usbuf.fullname)+1 ); - retcode = RENAMEUSER_OK; - } - } - - } - - end_critical_section(S_USERS); - return(retcode); -} - - -/* - * Convert a username into the format used as a database key prior to version 928 - * This only gets called by reindex_user_928() - */ -void makeuserkey_pre928(char *key, const char *username, long len) { - int i; - - if (len >= USERNAME_SIZE) { - syslog(LOG_INFO, "Username too long: %s", username); - len = USERNAME_SIZE - 1; - } - for (i=0; i<=len; ++i) { - key[i] = tolower(username[i]); - } -} - - -/* - * Read a user record using the pre-v928 index format, and write it back using the v928-and-higher index format. - * This ONLY gets called during an upgrade from version <928 to version >=928. - */ -void reindex_user_928(char *username, void *out_data) { - - char oldkey[USERNAME_SIZE]; - char newkey[USERNAME_SIZE]; - struct cdbdata *cdbus; - long len = cutusername(username); - struct ctdluser usbuf; - - makeuserkey_pre928(oldkey, username, len); - makeuserkey(newkey, username, len); - - syslog(LOG_DEBUG, "user_ops: reindex_user_928: %s <%s> --> <%s>", username, oldkey, newkey); - - // Fetch the user record using the old index format - cdbus = cdb_fetch(CDB_USERS, oldkey, strlen(oldkey)); - if (cdbus == NULL) { - syslog(LOG_INFO, "user_ops: <%s> not found, were they already reindexed?", username); - return; - } - memcpy(&usbuf, cdbus->ptr, ((cdbus->len > sizeof(struct ctdluser)) ? sizeof(struct ctdluser) : cdbus->len)); - cdb_free(cdbus); - - // delete the old record - cdb_delete(CDB_USERS, oldkey, strlen(oldkey)); - - // write the new record - cdb_store(CDB_USERS, newkey, strlen(newkey), &usbuf, sizeof(struct ctdluser)); -} - - -/* - * Index-generating function used by Ctdl[Get|Set]Relationship - */ -int GenerateRelationshipIndex(char *IndexBuf, - long RoomID, - long RoomGen, - long UserID) -{ - struct { - long iRoomID; - long iRoomGen; - long iUserID; - } TheIndex; - - TheIndex.iRoomID = RoomID; - TheIndex.iRoomGen = RoomGen; - TheIndex.iUserID = UserID; - - memcpy(IndexBuf, &TheIndex, sizeof(TheIndex)); - return(sizeof(TheIndex)); -} - - -/* - * Back end for CtdlSetRelationship() - */ -void put_visit(visit *newvisit) -{ - char IndexBuf[32]; - int IndexLen = 0; - - memset (IndexBuf, 0, sizeof (IndexBuf)); - /* Generate an index */ - IndexLen = GenerateRelationshipIndex(IndexBuf, newvisit->v_roomnum, newvisit->v_roomgen, newvisit->v_usernum); - - /* Store the record */ - cdb_store(CDB_VISIT, IndexBuf, IndexLen, - newvisit, sizeof(visit) - ); -} - - -/* - * Define a relationship between a user and a room - */ -void CtdlSetRelationship(visit *newvisit, struct ctdluser *rel_user, struct ctdlroom *rel_room) { - /* We don't use these in Citadel because they're implicit by the - * index, but they must be present if the database is exported. - */ - newvisit->v_roomnum = rel_room->QRnumber; - newvisit->v_roomgen = rel_room->QRgen; - newvisit->v_usernum = rel_user->usernum; - - put_visit(newvisit); -} - - -/* - * Locate a relationship between a user and a room - */ -void CtdlGetRelationship(visit *vbuf, struct ctdluser *rel_user, struct ctdlroom *rel_room) { - char IndexBuf[32]; - int IndexLen; - struct cdbdata *cdbvisit; - - /* Generate an index */ - IndexLen = GenerateRelationshipIndex(IndexBuf, rel_room->QRnumber, rel_room->QRgen, rel_user->usernum); - - /* Clear out the buffer */ - memset(vbuf, 0, sizeof(visit)); - - cdbvisit = cdb_fetch(CDB_VISIT, IndexBuf, IndexLen); - if (cdbvisit != NULL) { - memcpy(vbuf, cdbvisit->ptr, ((cdbvisit->len > sizeof(visit)) ? sizeof(visit) : cdbvisit->len)); - cdb_free(cdbvisit); - } - else { - /* If this is the first time the user has seen this room, - * set the view to be the default for the room. - */ - vbuf->v_view = rel_room->QRdefaultview; - } - - /* Set v_seen if necessary */ - if (vbuf->v_seen[0] == 0) { - snprintf(vbuf->v_seen, sizeof vbuf->v_seen, "*:%ld", vbuf->v_lastseen); - } -} - - -void CtdlMailboxName(char *buf, size_t n, const struct ctdluser *who, const char *prefix) -{ - snprintf(buf, n, "%010ld.%s", who->usernum, prefix); -} - - -void MailboxName(char *buf, size_t n, const struct ctdluser *who, const char *prefix) -{ - snprintf(buf, n, "%010ld.%s", who->usernum, prefix); -} - - -/* - * Check to see if the specified user has Internet mail permission - * (returns nonzero if permission is granted) - */ -int CtdlCheckInternetMailPermission(struct ctdluser *who) { - - /* Do not allow twits to send Internet mail */ - if (who->axlevel <= AxProbU) return(0); - - /* Globally enabled? */ - if (CtdlGetConfigInt("c_restrict") == 0) return(1); - - /* User flagged ok? */ - if (who->flags & US_INTERNET) return(2); - - /* Admin level access? */ - if (who->axlevel >= AxAideU) return(3); - - /* No mail for you! */ - return(0); -} - - -/* - * Convenience function. - */ -int CtdlAccessCheck(int required_level) -{ - if (CC->internal_pgm) return(0); - if (required_level >= ac_internal) { - cprintf("%d This is not a user-level command.\n", ERROR + HIGHER_ACCESS_REQUIRED); - return(-1); - } - - if ((required_level >= ac_logged_in_or_guest) && (CC->logged_in == 0) && (CtdlGetConfigInt("c_guest_logins") == 0)) { - cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN); - return(-1); - } - - if ((required_level >= ac_logged_in) && (CC->logged_in == 0)) { - cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN); - return(-1); - } - - if (CC->user.axlevel >= AxAideU) return(0); - if (required_level >= ac_aide) { - cprintf("%d This command requires Admin access.\n", - ERROR + HIGHER_ACCESS_REQUIRED); - return(-1); - } - - if (is_room_aide()) return(0); - if (required_level >= ac_room_aide) { - cprintf("%d This command requires Admin or Room Admin access.\n", - ERROR + HIGHER_ACCESS_REQUIRED); - return(-1); - } - - /* shhh ... succeed quietly */ - return(0); -} - - -/* - * Is the user currently logged in an Admin? - */ -int is_aide(void) -{ - if (CC->user.axlevel >= AxAideU) - return(1); - else - return(0); -} - - -/* - * Is the user currently logged in an Admin *or* the room Admin for this room? - */ -int is_room_aide(void) -{ - - if (!CC->logged_in) { - return(0); - } - - if ((CC->user.axlevel >= AxAideU) || (CC->room.QRroomaide == CC->user.usernum)) { - return(1); - } else { - return(0); - } -} - - -/* - * CtdlGetUserByNumber() - get user by number - * returns 0 if user was found - * - * Note: fetching a user this way requires one additional database operation. - */ -int CtdlGetUserByNumber(struct ctdluser *usbuf, long number) -{ - struct cdbdata *cdbun; - int r; - - cdbun = cdb_fetch(CDB_USERSBYNUMBER, &number, sizeof(long)); - if (cdbun == NULL) { - syslog(LOG_INFO, "user_ops: %ld not found", number); - return(-1); - } - - syslog(LOG_INFO, "user_ops: %ld maps to %s", number, cdbun->ptr); - r = CtdlGetUser(usbuf, cdbun->ptr); - cdb_free(cdbun); - return(r); -} - - -/* - * Helper function for rebuild_usersbynumber() - */ -void rebuild_ubn_for_user(char *username, void *data) { - struct ctdluser u; - - syslog(LOG_DEBUG, "user_ops: rebuilding usersbynumber index for %s", username); - if (CtdlGetUser(&u, username) == 0) { - cdb_store(CDB_USERSBYNUMBER, &(u.usernum), sizeof(long), u.fullname, strlen(u.fullname)+1); - } -} - - -/* - * Rebuild the users-by-number index - */ -void rebuild_usersbynumber(void) { - cdb_trunc(CDB_USERSBYNUMBER); /* delete the old indices */ - ForEachUser(rebuild_ubn_for_user, NULL); /* enumerate the users */ -} - - -/* - * getuserbyuid() Get user by system uid (for PAM mode authentication) - * Returns 0 if user was found - * This now uses an extauth index. - */ -int getuserbyuid(struct ctdluser *usbuf, uid_t number) -{ - struct cdbdata *cdbextauth; - long usernum = 0; - StrBuf *claimed_id; - - claimed_id = NewStrBuf(); - StrBufPrintf(claimed_id, "uid:%d", number); - cdbextauth = cdb_fetch(CDB_EXTAUTH, ChrPtr(claimed_id), StrLength(claimed_id)); - FreeStrBuf(&claimed_id); - if (cdbextauth == NULL) { - return(-1); - } - - memcpy(&usernum, cdbextauth->ptr, sizeof(long)); - cdb_free(cdbextauth); - - if (!CtdlGetUserByNumber(usbuf, usernum)) { - return(0); - } - - return(-1); -} - - -/* - * Back end for cmd_user() and its ilk - */ -int CtdlLoginExistingUser(const char *trythisname) -{ - char username[SIZ]; - int found_user; - - syslog(LOG_DEBUG, "user_ops: CtdlLoginExistingUser(%s)", trythisname); - - if ((CC->logged_in)) { - return login_already_logged_in; - } - - if (trythisname == NULL) return login_not_found; - - if (!strncasecmp(trythisname, "SYS_", 4)) - { - syslog(LOG_DEBUG, "user_ops: system user \"%s\" is not allowed to log in.", trythisname); - return login_not_found; - } - - /* Continue attempting user validation... */ - safestrncpy(username, trythisname, sizeof (username)); - striplt(username); - - if (IsEmptyStr(username)) { - return login_not_found; - } - - if (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_HOST) { - - /* host auth mode */ - - struct passwd pd; - struct passwd *tempPwdPtr; - char pwdbuffer[256]; - - syslog(LOG_DEBUG, "user_ops: asking host about <%s>", username); -#ifdef HAVE_GETPWNAM_R -#ifdef SOLARIS_GETPWUID - syslog(LOG_DEBUG, "user_ops: calling getpwnam_r()"); - tempPwdPtr = getpwnam_r(username, &pd, pwdbuffer, sizeof pwdbuffer); -#else // SOLARIS_GETPWUID - syslog(LOG_DEBUG, "user_ops: calling getpwnam_r()"); - getpwnam_r(username, &pd, pwdbuffer, sizeof pwdbuffer, &tempPwdPtr); -#endif // SOLARIS_GETPWUID -#else // HAVE_GETPWNAM_R - syslog(LOG_DEBUG, "user_ops: SHOULD NEVER GET HERE!!!"); - tempPwdPtr = NULL; -#endif // HAVE_GETPWNAM_R - if (tempPwdPtr == NULL) { - syslog(LOG_DEBUG, "user_ops: no such user <%s>", username); - return login_not_found; - } - - /* Locate the associated Citadel account. If not found, make one attempt to create it. */ - found_user = getuserbyuid(&CC->user, pd.pw_uid); - if (found_user != 0) { - create_user(username, CREATE_USER_DO_NOT_BECOME_USER, pd.pw_uid); - found_user = getuserbyuid(&CC->user, pd.pw_uid); - } - syslog(LOG_DEBUG, "user_ops: found it: uid=%ld, gecos=%s here: %d", (long)pd.pw_uid, pd.pw_gecos, found_user); - - } - -#ifdef HAVE_LDAP - else if ((CtdlGetConfigInt("c_auth_mode") == AUTHMODE_LDAP) || (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_LDAP_AD)) { - - /* LDAP auth mode */ - - uid_t ldap_uid; - char ldap_cn[256]; - char ldap_dn[256]; - - found_user = CtdlTryUserLDAP(username, ldap_dn, sizeof ldap_dn, ldap_cn, sizeof ldap_cn, &ldap_uid); - if (found_user != 0) { - return login_not_found; - } - - found_user = getuserbyuid(&CC->user, ldap_uid); - if (found_user != 0) { - create_user(ldap_cn, CREATE_USER_DO_NOT_BECOME_USER, ldap_uid); - found_user = getuserbyuid(&CC->user, ldap_uid); - } - - if (found_user == 0) { - if (CC->ldap_dn != NULL) free(CC->ldap_dn); - CC->ldap_dn = strdup(ldap_dn); - } - - } -#endif - - else { - /* native auth mode */ - - recptypes *valid = NULL; - - /* First, try to log in as if the supplied name is a display name */ - found_user = CtdlGetUser(&CC->user, username); - - /* If that didn't work, try to log in as if the supplied name * is an e-mail address */ - if (found_user != 0) { - valid = validate_recipients(username, NULL, 0); - if (valid != NULL) { - if (valid->num_local == 1) { - found_user = CtdlGetUser(&CC->user, valid->recp_local); - } - free_recipients(valid); - } - } - } - - /* Did we find something? */ - if (found_user == 0) { - if (((CC->nologin)) && (CC->user.axlevel < AxAideU)) { - return login_too_many_users; - } else { - safestrncpy(CC->curr_user, CC->user.fullname, sizeof CC->curr_user); - return login_ok; - } - } - return login_not_found; -} - - -/* - * session startup code which is common to both cmd_pass() and cmd_newu() - */ -void do_login(void) -{ - CC->logged_in = 1; - syslog(LOG_NOTICE, "user_ops: <%s> logged in", CC->curr_user); - - CtdlGetUserLock(&CC->user, CC->curr_user); - ++(CC->user.timescalled); - CC->previous_login = CC->user.lastcall; - time(&CC->user.lastcall); - - /* If this user's name is the name of the system administrator - * (as specified in setup), automatically assign access level 6. - */ - if ( (!IsEmptyStr(CtdlGetConfigStr("c_sysadm"))) && (!strcasecmp(CC->user.fullname, CtdlGetConfigStr("c_sysadm"))) ) { - CC->user.axlevel = AxAideU; - } - - /* If we're authenticating off the host system, automatically give root the highest level of access. */ - if (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_HOST) { - if (CC->user.uid == 0) { - CC->user.axlevel = AxAideU; - } - } - CtdlPutUserLock(&CC->user); - - /* If we are using LDAP authentication, extract the user's email addresses from the directory. */ -#ifdef HAVE_LDAP - if ((CtdlGetConfigInt("c_auth_mode") == AUTHMODE_LDAP) || (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_LDAP_AD)) { - char new_emailaddrs[512]; - if (CtdlGetConfigInt("c_ldap_sync_email_addrs") > 0) { - if (extract_email_addresses_from_ldap(CC->ldap_dn, new_emailaddrs) == 0) { - CtdlSetEmailAddressesForUser(CC->user.fullname, new_emailaddrs); - } - } - } -#endif - - /* If the user does not have any email addresses assigned, generate one. */ - if (IsEmptyStr(CC->user.emailaddrs)) { - AutoGenerateEmailAddressForUser(&CC->user); - } - - /* - * Populate cs_inet_email and cs_inet_other_emails with valid email addresses from the user record - */ - strcpy(CC->cs_inet_email, CC->user.emailaddrs); - char *firstsep = strstr(CC->cs_inet_email, "|"); - if (firstsep) { - strcpy(CC->cs_inet_other_emails, firstsep+1); - *firstsep = 0; - } - else { - CC->cs_inet_other_emails[0] = 0; - } - - /* Create any personal rooms required by the system. - * (Technically, MAILROOM should be there already, but just in case...) - */ - CtdlCreateRoom(MAILROOM, 4, "", 0, 1, 0, VIEW_MAILBOX); - CtdlCreateRoom(SENTITEMS, 4, "", 0, 1, 0, VIEW_MAILBOX); - CtdlCreateRoom(USERTRASHROOM, 4, "", 0, 1, 0, VIEW_MAILBOX); - CtdlCreateRoom(USERDRAFTROOM, 4, "", 0, 1, 0, VIEW_MAILBOX); - - /* Run any startup routines registered by loadable modules */ - PerformSessionHooks(EVT_LOGIN); - - /* Enter the lobby */ - CtdlUserGoto(CtdlGetConfigStr("c_baseroom"), 0, 0, NULL, NULL, NULL, NULL); -} - - -void logged_in_response(void) -{ - cprintf("%d %s|%d|%ld|%ld|%u|%ld|%ld\n", - CIT_OK, CC->user.fullname, CC->user.axlevel, - CC->user.timescalled, CC->user.posted, - CC->user.flags, CC->user.usernum, - CC->previous_login - ); -} - - -void CtdlUserLogout(void) -{ - CitContext *CCC = MyContext(); - - syslog(LOG_DEBUG, "user_ops: CtdlUserLogout() logging out <%s> from session %d", CCC->curr_user, CCC->cs_pid); - - /* Run any hooks registered by modules... */ - PerformSessionHooks(EVT_LOGOUT); - - /* - * Clear out some session data. Most likely, the CitContext for this - * session is about to get nuked when the session disconnects, but - * since it's possible to log in again without reconnecting, we cannot - * make that assumption. - */ - CCC->logged_in = 0; - - /* Check to see if the user was deleted while logged in and purge them if necessary */ - if ((CCC->user.axlevel == AxDeleted) && (CCC->user.usernum)) { - purge_user(CCC->user.fullname); - } - - /* Clear out the user record in memory so we don't behave like a ghost */ - memset(&CCC->user, 0, sizeof(struct ctdluser)); - CCC->curr_user[0] = 0; - CCC->cs_inet_email[0] = 0; - CCC->cs_inet_other_emails[0] = 0; - CCC->cs_inet_fn[0] = 0; - - /* Free any output buffers */ - unbuffer_output(); -} - - -/* - * Validate a password on the host unix system by talking to the chkpwd daemon - */ -static int validpw(uid_t uid, const char *pass) -{ - char buf[256]; - int rv = 0; - - if (IsEmptyStr(pass)) { - syslog(LOG_DEBUG, "user_ops: refusing to chkpwd for uid=%d with empty password", uid); - return 0; - } - - syslog(LOG_DEBUG, "user_ops: validating password for uid=%d using chkpwd...", uid); - - begin_critical_section(S_CHKPWD); - rv = write(chkpwd_write_pipe[1], &uid, sizeof(uid_t)); - if (rv == -1) { - syslog(LOG_ERR, "user_ops: communication with chkpwd broken: %m"); - end_critical_section(S_CHKPWD); - return 0; - } - rv = write(chkpwd_write_pipe[1], pass, 256); - if (rv == -1) { - syslog(LOG_ERR, "user_ops: communication with chkpwd broken: %m"); - end_critical_section(S_CHKPWD); - return 0; - } - rv = read(chkpwd_read_pipe[0], buf, 4); - if (rv == -1) { - syslog(LOG_ERR, "user_ops: ommunication with chkpwd broken: %m"); - end_critical_section(S_CHKPWD); - return 0; - } - end_critical_section(S_CHKPWD); - - if (!strncmp(buf, "PASS", 4)) { - syslog(LOG_DEBUG, "user_ops: chkpwd pass"); - return(1); - } - - syslog(LOG_DEBUG, "user_ops: chkpwd fail"); - return 0; -} - - -/* - * Start up the chkpwd daemon so validpw() has something to talk to - */ -void start_chkpwd_daemon(void) { - pid_t chkpwd_pid; - struct stat filestats; - int i; - - syslog(LOG_DEBUG, "user_ops: starting chkpwd daemon for host authentication mode"); - - if ((stat(file_chkpwd, &filestats)==-1) || (filestats.st_size==0)) { - syslog(LOG_ERR, "user_ops: %s: %m", file_chkpwd); - abort(); - } - if (pipe(chkpwd_write_pipe) != 0) { - syslog(LOG_ERR, "user_ops: unable to create pipe for chkpwd daemon: %m"); - abort(); - } - if (pipe(chkpwd_read_pipe) != 0) { - syslog(LOG_ERR, "user_ops: unable to create pipe for chkpwd daemon: %m"); - abort(); - } - - chkpwd_pid = fork(); - if (chkpwd_pid < 0) { - syslog(LOG_ERR, "user_ops: unable to fork chkpwd daemon: %m"); - abort(); - } - if (chkpwd_pid == 0) { - dup2(chkpwd_write_pipe[0], 0); - dup2(chkpwd_read_pipe[1], 1); - for (i=2; i<256; ++i) close(i); - execl(file_chkpwd, file_chkpwd, NULL); - syslog(LOG_ERR, "user_ops: unable to exec chkpwd daemon: %m"); - abort(); - exit(errno); - } -} - - -int CtdlTryPassword(const char *password, long len) -{ - int code; - CitContext *CCC = CC; - - if ((CCC->logged_in)) { - syslog(LOG_WARNING, "user_ops: CtdlTryPassword: already logged in"); - return pass_already_logged_in; - } - if (!strcmp(CCC->curr_user, NLI)) { - syslog(LOG_WARNING, "user_ops: CtdlTryPassword: no user selected"); - return pass_no_user; - } - if (CtdlGetUser(&CCC->user, CCC->curr_user)) { - syslog(LOG_ERR, "user_ops: CtdlTryPassword: internal error"); - return pass_internal_error; - } - if (password == NULL) { - syslog(LOG_INFO, "user_ops: CtdlTryPassword: NULL password string supplied"); - return pass_wrong_password; - } - - else if (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_HOST) { - - /* host auth mode */ - - if (validpw(CCC->user.uid, password)) { - code = 0; - - /* - * sooper-seekrit hack: populate the password field in the - * citadel database with the password that the user typed, - * if it's correct. This allows most sites to convert from - * host auth to native auth if they want to. If you think - * this is a security hazard, comment it out. - */ - - CtdlGetUserLock(&CCC->user, CCC->curr_user); - safestrncpy(CCC->user.password, password, sizeof CCC->user.password); - CtdlPutUserLock(&CCC->user); - - /* - * (sooper-seekrit hack ends here) - */ - } - else { - code = (-1); - } - } - -#ifdef HAVE_LDAP - else if ((CtdlGetConfigInt("c_auth_mode") == AUTHMODE_LDAP) || (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_LDAP_AD)) { - - /* LDAP auth mode */ - - if ((CCC->ldap_dn) && (!CtdlTryPasswordLDAP(CCC->ldap_dn, password))) { - code = 0; - } - else { - code = (-1); - } - } -#endif - - else { - - /* native auth mode */ - char *pw; - - pw = (char*) malloc(len + 1); - memcpy(pw, password, len + 1); - strproc(pw); - strproc(CCC->user.password); - code = strcasecmp(CCC->user.password, pw); - if (code != 0) { - strproc(pw); - strproc(CCC->user.password); - code = strcasecmp(CCC->user.password, pw); - } - free (pw); - } - - if (!code) { - do_login(); - return pass_ok; - } - else { - syslog(LOG_WARNING, "user_ops: bad password specified for <%s> Service <%s> Port <%ld> Remote <%s / %s>", - CCC->curr_user, - CCC->ServiceName, - CCC->tcp_port, - CCC->cs_host, - CCC->cs_addr - ); - return pass_wrong_password; - } -} - - -/* - * Delete a user record *and* all of its related resources. - */ -int purge_user(char pname[]) -{ - struct ctdluser usbuf; - char usernamekey[USERNAME_SIZE]; - - makeuserkey(usernamekey, pname, cutusername(pname)); - - /* If the name is empty we can't find them in the DB any way so just return */ - if (IsEmptyStr(pname)) { - return(ERROR + NO_SUCH_USER); - } - - if (CtdlGetUser(&usbuf, pname) != 0) { - syslog(LOG_ERR, "user_ops: cannot purge user <%s> - not found", pname); - return(ERROR + NO_SUCH_USER); - } - - /* Don't delete a user who is currently logged in. Instead, just - * set the access level to 0, and let the account get swept up - * during the next purge. - */ - if (CtdlIsUserLoggedInByNum(usbuf.usernum)) { - syslog(LOG_WARNING, "user_ops: <%s> is logged in; not deleting", pname); - usbuf.axlevel = AxDeleted; - CtdlPutUser(&usbuf); - return(1); - } - - syslog(LOG_NOTICE, "user_ops: deleting <%s>", pname); - - /* Perform any purge functions registered by server extensions */ - PerformUserHooks(&usbuf, EVT_PURGEUSER); - - /* delete any existing user/room relationships */ - cdb_delete(CDB_VISIT, &usbuf.usernum, sizeof(long)); - - /* delete the users-by-number index record */ - cdb_delete(CDB_USERSBYNUMBER, &usbuf.usernum, sizeof(long)); - - /* delete the userlog entry */ - cdb_delete(CDB_USERS, usernamekey, strlen(usernamekey)); - - return(0); -} - - -int internal_create_user(char *username, struct ctdluser *usbuf, uid_t uid) -{ - if (!CtdlGetUser(usbuf, username)) { - return(ERROR + ALREADY_EXISTS); - } - - /* Go ahead and initialize a new user record */ - memset(usbuf, 0, sizeof(struct ctdluser)); - safestrncpy(usbuf->fullname, username, sizeof usbuf->fullname); - strcpy(usbuf->password, ""); - usbuf->uid = uid; - - /* These are the default flags on new accounts */ - usbuf->flags = US_LASTOLD | US_DISAPPEAR | US_PAGINATOR | US_FLOORS; - - usbuf->timescalled = 0; - usbuf->posted = 0; - usbuf->axlevel = CtdlGetConfigInt("c_initax"); - usbuf->lastcall = time(NULL); - - /* fetch a new user number */ - usbuf->usernum = get_new_user_number(); - - /* add user to the database */ - CtdlPutUser(usbuf); - cdb_store(CDB_USERSBYNUMBER, &usbuf->usernum, sizeof(long), usbuf->fullname, strlen(usbuf->fullname)+1); - - /* If non-native auth, index by uid */ - if ((usbuf->uid > 0) && (usbuf->uid != NATIVE_AUTH_UID)) { - StrBuf *claimed_id = NewStrBuf(); - StrBufPrintf(claimed_id, "uid:%d", usbuf->uid); - attach_extauth(usbuf, claimed_id); - FreeStrBuf(&claimed_id); - } - - return(0); -} - - -/* - * create_user() - back end processing to create a new user - * - * Set 'newusername' to the desired account name. - * Set 'become_user' to CREATE_USER_BECOME_USER if this is self-service account creation and we want to - * actually log in as the user we just created, otherwise set it to CREATE_USER_DO_NOT_BECOME_USER - * Set 'uid' to some uid_t value to associate the account with an external auth user, or (-1) for native auth - */ -int create_user(char *username, int become_user, uid_t uid) -{ - struct ctdluser usbuf; - struct ctdlroom qrbuf; - char mailboxname[ROOMNAMELEN]; - char buf[SIZ]; - int retval; - - strproc(username); - if ((retval = internal_create_user(username, &usbuf, uid)) != 0) { - return retval; - } - - /* - * Give the user a private mailbox and a configuration room. - * Make the latter an invisible system room. - */ - CtdlMailboxName(mailboxname, sizeof mailboxname, &usbuf, MAILROOM); - CtdlCreateRoom(mailboxname, 5, "", 0, 1, 1, VIEW_MAILBOX); - - CtdlMailboxName(mailboxname, sizeof mailboxname, &usbuf, USERCONFIGROOM); - CtdlCreateRoom(mailboxname, 5, "", 0, 1, 1, VIEW_BBS); - if (CtdlGetRoomLock(&qrbuf, mailboxname) == 0) { - qrbuf.QRflags2 |= QR2_SYSTEM; - CtdlPutRoomLock(&qrbuf); - } - - /* Perform any create functions registered by server extensions */ - PerformUserHooks(&usbuf, EVT_NEWUSER); - - /* Everything below this line can be bypassed if administratively - * creating a user, instead of doing self-service account creation - */ - - if (become_user == CREATE_USER_BECOME_USER) { - /* Now become the user we just created */ - memcpy(&CC->user, &usbuf, sizeof(struct ctdluser)); - safestrncpy(CC->curr_user, username, sizeof CC->curr_user); - do_login(); - - /* Check to make sure we're still who we think we are */ - if (CtdlGetUser(&CC->user, CC->curr_user)) { - return(ERROR + INTERNAL_ERROR); - } - } - - snprintf(buf, SIZ, - "New user account <%s> has been created, from host %s [%s].\n", - username, - CC->cs_host, - CC->cs_addr - ); - CtdlAideMessage(buf, "User Creation Notice"); - syslog(LOG_NOTICE, "user_ops: <%s> created", username); - return(0); -} - - -/* - * set password - back end api code - */ -void CtdlSetPassword(char *new_pw) -{ - CtdlGetUserLock(&CC->user, CC->curr_user); - safestrncpy(CC->user.password, new_pw, sizeof(CC->user.password)); - CtdlPutUserLock(&CC->user); - syslog(LOG_INFO, "user_ops: password changed for <%s>", CC->curr_user); - PerformSessionHooks(EVT_SETPASS); -} - - -/* - * API function for cmd_invt_kick() and anything else that needs to - * invite or kick out a user to/from a room. - * - * Set iuser to the name of the user, and op to 1=invite or 0=kick - */ -int CtdlInvtKick(char *iuser, int op) { - struct ctdluser USscratch; - visit vbuf; - char bbb[SIZ]; - - if (CtdlGetUser(&USscratch, iuser) != 0) { - return(1); - } - - CtdlGetRelationship(&vbuf, &USscratch, &CC->room); - if (op == 1) { - vbuf.v_flags = vbuf.v_flags & ~V_FORGET & ~V_LOCKOUT; - vbuf.v_flags = vbuf.v_flags | V_ACCESS; - } - if (op == 0) { - vbuf.v_flags = vbuf.v_flags & ~V_ACCESS; - vbuf.v_flags = vbuf.v_flags | V_FORGET | V_LOCKOUT; - } - CtdlSetRelationship(&vbuf, &USscratch, &CC->room); - - /* post a message in Aide> saying what we just did */ - snprintf(bbb, sizeof bbb, "%s has been %s \"%s\" by %s.\n", - iuser, - ((op == 1) ? "invited to" : "kicked out of"), - CC->room.QRname, - (CC->logged_in ? CC->user.fullname : "an administrator") - ); - CtdlAideMessage(bbb,"User Admin Message"); - return(0); -} - - -/* - * Forget (Zap) the current room (API call) - * Returns 0 on success - */ -int CtdlForgetThisRoom(void) { - visit vbuf; - - /* On some systems, Admins are not allowed to forget rooms */ - if (is_aide() && (CtdlGetConfigInt("c_aide_zap") == 0) - && ((CC->room.QRflags & QR_MAILBOX) == 0) ) { - return(1); - } - - CtdlGetUserLock(&CC->user, CC->curr_user); - CtdlGetRelationship(&vbuf, &CC->user, &CC->room); - - vbuf.v_flags = vbuf.v_flags | V_FORGET; - vbuf.v_flags = vbuf.v_flags & ~V_ACCESS; - - CtdlSetRelationship(&vbuf, &CC->user, &CC->room); - CtdlPutUserLock(&CC->user); - - /* Return to the Lobby, so we don't end up in an undefined room */ - CtdlUserGoto(CtdlGetConfigStr("c_baseroom"), 0, 0, NULL, NULL, NULL, NULL); - return(0); -} - - -/* - * Traverse the user file and perform a callback for each user record. - * (New improved version that runs in two phases so that callbacks can perform writes without having a r/o cursor open) - */ -void ForEachUser(void (*CallBack) (char *, void *out_data), void *in_data) -{ - struct cdbdata *cdbus; - struct ctdluser *usptr; - - struct feu { - struct feu *next; - char username[USERNAME_SIZE]; - }; - struct feu *usernames = NULL; - struct feu *f = NULL; - - cdb_rewind(CDB_USERS); - - // Phase 1 : load list of usernames - while (cdbus = cdb_next_item(CDB_USERS), cdbus != NULL) { - usptr = (struct ctdluser *) cdbus->ptr; - - if (strlen(usptr->fullname) > 0) { - f = malloc(sizeof(struct feu)); - f->next = usernames; - strncpy(f->username, usptr->fullname, USERNAME_SIZE); - usernames = f; - } - } - - // Phase 2 : perform the callback for each username - while (usernames != NULL) { - (*CallBack) (usernames->username, in_data); - f = usernames; - usernames = usernames->next; - free(f); - } - - free(usernames); -} - - -/* - * Count the number of new mail messages the user has - */ -int NewMailCount() -{ - int num_newmsgs = 0; - num_newmsgs = CC->newmail; - CC->newmail = 0; - return(num_newmsgs); -} - - -/* - * Count the number of new mail messages the user has - */ -int InitialMailCheck() -{ - int num_newmsgs = 0; - int a; - char mailboxname[ROOMNAMELEN]; - struct ctdlroom mailbox; - visit vbuf; - struct cdbdata *cdbfr; - long *msglist = NULL; - int num_msgs = 0; - - CtdlMailboxName(mailboxname, sizeof mailboxname, &CC->user, MAILROOM); - if (CtdlGetRoom(&mailbox, mailboxname) != 0) - return(0); - CtdlGetRelationship(&vbuf, &CC->user, &mailbox); - - cdbfr = cdb_fetch(CDB_MSGLISTS, &mailbox.QRnumber, sizeof(long)); - - if (cdbfr != NULL) { - msglist = malloc(cdbfr->len); - memcpy(msglist, cdbfr->ptr, cdbfr->len); - num_msgs = cdbfr->len / sizeof(long); - cdb_free(cdbfr); - } - if (num_msgs > 0) - for (a = 0; a < num_msgs; ++a) { - if (msglist[a] > 0L) { - if (msglist[a] > vbuf.v_lastseen) { - ++num_newmsgs; - } - } - } - if (msglist != NULL) - free(msglist); - - return(num_newmsgs); -}