+++ /dev/null
-// 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 <stdlib.h>
-#include <unistd.h>
-#include "sysdep.h"
-#include <stdio.h>
-#include <sys/stat.h>
-#include <libcitadel.h>
-#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) && (i<USERNAME_SIZE-1)); ++i) {
- if (isalnum((username[i]))) {
- key[keylen++] = tolower(username[i]);
- }
- }
- key[keylen++] = 0;
-}
-
-
-// Compare two usernames to see if they are the same user after being keyed for the database
-// Usage is identical to strcmp()
-int CtdlUserCmp(char *s1, char *s2) {
- char k1[USERNAME_SIZE];
- char k2[USERNAME_SIZE];
-
- makeuserkey(k1, s1);
- makeuserkey(k2, s2);
- return(strcmp(k1,k2));
-}
-
-
-// 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;
-
- if (usbuf != NULL) {
- memset(usbuf, 0, sizeof(struct ctdluser));
- }
-
- makeuserkey(usernamekey, name);
- if (IsEmptyStr(usernamekey)) {
- return(1); // empty user name
- }
- 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) {
- 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);
-}
projects / citadel.git / blobdiff