X-Git-Url: https://code.citadel.org/?a=blobdiff_plain;f=citadel%2Fuser_ops.c;fp=citadel%2Fuser_ops.c;h=0000000000000000000000000000000000000000;hb=f6fcf350671e3661f8f22696eb35133014ab6a14;hp=0603fc79cf5cc87a2c3dfa61f7ece6eba152c0b5;hpb=2e4e67a1f7f65568abace99d13a71024ad06ebde;p=citadel.git diff --git a/citadel/user_ops.c b/citadel/user_ops.c deleted file mode 100644 index 0603fc79c..000000000 --- a/citadel/user_ops.c +++ /dev/null @@ -1,1169 +0,0 @@ -// Server functions which perform operations on user objects. -// -// Copyright (c) 1987-2022 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]; - - -// makeuserkey() - convert a username into the format used as a database key -// "key" must be a buffer of at least USERNAME_SIZE -// (Key format is the username with all non-alphanumeric characters removed, and converted to lower case.) -void makeuserkey(char *key, const char *username) { - int i; - int keylen = 0; - - if (IsEmptyStr(username)) { - key[0] = 0; - return; - } - - int len = strlen(username); - for (i=0; ((i<=len) && (iptr, ((cdbus->len > sizeof(struct ctdluser)) ? sizeof(struct ctdluser) : cdbus->len)); - } - cdb_free(cdbus); - return(0); -} - - -int CtdlLockGetCurrentUser(void) { - return CtdlGetUser(&CC->user, CC->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); - 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); - makeuserkey(newnamekey, 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) { - int i; - - int len = strlen(username); - - 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; - struct ctdluser usbuf; - - makeuserkey_pre928(oldkey, username); - makeuserkey(newkey, username); - - 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); -} - - -// 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); -} - - -// This is a convenience function which follows the Citadel protocol semantics for most commands. -// If the current user does not have the requested access level, it outputs a protocol-friendly error message -// and then returns (-1). This allows calling functions to complete an access level check in one line of code. -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); - } - - // Do not generate any output if we succeeded -- the calling function will handle that. - 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; - } - - // host auth mode... - if (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_HOST) { - 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); - - } - - // LDAP auth mode... - else if ((CtdlGetConfigInt("c_auth_mode") == AUTHMODE_LDAP) || (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_LDAP_AD)) { - - 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); - } - - } - - // native auth mode... - else { - struct 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. - 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); - } - } - } - - // If the user does not have any email addresses assigned, generate one. - if (IsEmptyStr(CC->user.emailaddrs)) { - AutoGenerateEmailAddressForUser(&CC->user); - } - - // Populate the user principal identity, which is consistent and never aliased - strcpy(CC->cs_principal_id, ""); - makeuserkey(CC->cs_principal_id, CC->user.fullname); - strcat(CC->cs_principal_id, "@"); - strcat(CC->cs_principal_id, CtdlGetConfigStr("c_fqdn")); - - // 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) { - - syslog(LOG_DEBUG, "user_ops: CtdlUserLogout() logging out <%s> from session %d", CC->curr_user, CC->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. - CC->logged_in = 0; - - // Check to see if the user was deleted while logged in and purge them if necessary - if ((CC->user.axlevel == AxDeleted) && (CC->user.usernum)) { - purge_user(CC->user.fullname); - } - - // Clear out the user record in memory so we don't behave like a ghost - memset(&CC->user, 0, sizeof(struct ctdluser)); - CC->curr_user[0] = 0; - CC->cs_inet_email[0] = 0; - CC->cs_inet_other_emails[0] = 0; - CC->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; - - if ((CC->logged_in)) { - syslog(LOG_WARNING, "user_ops: CtdlTryPassword: already logged in"); - return pass_already_logged_in; - } - if (!strcmp(CC->curr_user, NLI)) { - syslog(LOG_WARNING, "user_ops: CtdlTryPassword: no user selected"); - return pass_no_user; - } - if (CtdlGetUser(&CC->user, CC->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; - } - - // host auth mode... - else if (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_HOST) { - if (validpw(CC->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(&CC->user, CC->curr_user); - safestrncpy(CC->user.password, password, sizeof CC->user.password); - CtdlPutUserLock(&CC->user); - - // (sooper-seekrit hack ends here) - } - else { - code = (-1); - } - } - - // LDAP auth mode... - else if ((CtdlGetConfigInt("c_auth_mode") == AUTHMODE_LDAP) || (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_LDAP_AD)) { - - if ((CC->ldap_dn) && (!CtdlTryPasswordLDAP(CC->ldap_dn, password))) { - code = 0; - } - else { - code = (-1); - } - } - - // native auth mode... - else { - char *pw; - - pw = (char*) malloc(len + 1); - memcpy(pw, password, len + 1); - strproc(pw); - strproc(CC->user.password); - code = strcasecmp(CC->user.password, pw); - if (code != 0) { - strproc(pw); - strproc(CC->user.password); - code = strcasecmp(CC->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>", - CC->curr_user, - CC->ServiceName, - CC->tcp_port, - CC->cs_host, - CC->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); - - // 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 user entry - cdb_delete(CDB_USERS, usernamekey, strlen(usernamekey)); - - return(0); -} - - -// This is the back end processing that happens when we create a new user account. -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 *ufirst = NULL; - struct feu *ulast = NULL; - struct feu *f = NULL; - - cdb_rewind(CDB_USERS); - - // Phase 1 : build a linked list of all our user account names - 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 = NULL; - strncpy(f->username, usptr->fullname, USERNAME_SIZE); - - if (ufirst == NULL) { - ufirst = f; - ulast = f; - } - else { - ulast->next = f; - ulast = f; - } - } - } - - // Phase 2 : perform the callback for each user while de-allocating the list - while (ufirst != NULL) { - (*CallBack) (ufirst->username, in_data); - f = ufirst; - ufirst = ufirst->next; - free(f); - } -} - - -// 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); -}