#include "citadel_ldap.h"
#include "ctdl_module.h"
#include "user_ops.h"
+#include "internet_addressing.h"
#include "config.h"
#ifdef HAVE_LDAP
#include <ldap.h>
+/*
+ * Utility function, supply a search result and get back the fullname (display name, common name, etc) from the first result
+ */
+void derive_fullname_from_ldap_result(char *fullname, int fullname_size, LDAP *ldserver, LDAPMessage *search_result)
+{
+ char **values;
+
+ if (fullname == NULL) return;
+
+ if (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_LDAP_AD) {
+ values = ldap_get_values(ldserver, search_result, "displayName");
+ if (values) {
+ if (values[0]) {
+ if (fullname) safestrncpy(fullname, values[0], fullname_size);
+ syslog(LOG_DEBUG, "ldap: displayName = %s", values[0]);
+ }
+ ldap_value_free(values);
+ }
+ }
+ else {
+ values = ldap_get_values(ldserver, search_result, "cn");
+ if (values) {
+ if (values[0]) {
+ if (fullname) safestrncpy(fullname, values[0], fullname_size);
+ syslog(LOG_DEBUG, "ldap: cn = %s", values[0]);
+ }
+ ldap_value_free(values);
+ }
+ }
+}
+
+
+/*
+ * Utility function, supply a search result and get back the uid from the first result
+ */
+uid_t derive_uid_from_ldap(LDAP *ldserver, LDAPMessage *entry)
+{
+ char **values;
+ uid_t uid = (-1);
+
+ if (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_LDAP_AD) {
+ values = ldap_get_values(ldserver, entry, "objectGUID"); // AD schema: uid hashed from objectGUID
+ if (values) {
+ if (values[0]) {
+ uid = abs(HashLittle(values[0], strlen(values[0])));
+ }
+ ldap_value_free(values);
+ }
+ }
+ else {
+ values = ldap_get_values(ldserver, entry, "uidNumber"); // POSIX schema: uid = uidNumber
+ if (values) {
+ if (values[0]) {
+ uid = atoi(values[0]);
+ }
+ ldap_value_free(values);
+ }
+ }
+
+ return(uid);
+}
+
+
/*
* Wrapper function for ldap_initialize() that consistently fills in the correct fields
*/
int CtdlTryUserLDAP(char *username,
char *found_dn, int found_dn_size,
char *fullname, int fullname_size,
- uid_t *uid, int lookup_based_on_username)
+ uid_t *uid)
{
LDAP *ldserver = NULL;
int i;
LDAPMessage *entry = NULL;
char searchstring[1024];
struct timeval tv;
- char **values;
char *user_dn = NULL;
if (fullname) safestrncpy(fullname, username, fullname_size);
tv.tv_usec = 0;
if (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_LDAP_AD) {
- if (lookup_based_on_username != 0)
- snprintf(searchstring, sizeof(searchstring), "(displayName=%s)",username);
- else
- snprintf(searchstring, sizeof(searchstring), "(sAMAccountName=%s)", username);
+ snprintf(searchstring, sizeof(searchstring), "(sAMAccountName=%s)", username);
}
else {
- if (lookup_based_on_username != 0) {
- snprintf(searchstring, sizeof(searchstring), "(cn=%s)",username);
- }
- else {
- snprintf(searchstring, sizeof(searchstring), "(&(objectclass=posixAccount)(uid=%s))", username);
- }
+ snprintf(searchstring, sizeof(searchstring), "(&(objectclass=posixAccount)(cn=%s))", username);
+ // snprintf(searchstring, sizeof(searchstring), "(&(objectclass=posixAccount)(uid=%s))", username);
}
syslog(LOG_DEBUG, "ldap: search: %s", searchstring);
syslog(LOG_DEBUG, "ldap: dn = %s", user_dn);
}
- if (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_LDAP_AD) {
- values = ldap_get_values(ldserver, search_result, "displayName");
- if (values) {
- if (values[0]) {
- if (fullname) safestrncpy(fullname, values[0], fullname_size);
- syslog(LOG_DEBUG, "ldap: displayName = %s", values[0]);
- }
- ldap_value_free(values);
- }
- }
- else {
- values = ldap_get_values(ldserver, search_result, "cn");
- if (values) {
- if (values[0]) {
- if (fullname) safestrncpy(fullname, values[0], fullname_size);
- syslog(LOG_DEBUG, "ldap: cn = %s", values[0]);
- }
- ldap_value_free(values);
- }
- }
- /* If we know the username is the CN/displayName, we already set the uid*/
- if (lookup_based_on_username==0) {
- if (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_LDAP_AD) {
- values = ldap_get_values(ldserver, search_result, "objectGUID");
- if (values) {
- if (values[0]) {
- if (uid != NULL) {
- *uid = abs(HashLittle(values[0], strlen(values[0])));
- syslog(LOG_DEBUG, "ldap: uid hashed from objectGUID = %d", *uid);
- }
- }
- ldap_value_free(values);
- }
- }
- else {
- values = ldap_get_values(ldserver, search_result, "uidNumber");
- if (values) {
- if (values[0]) {
- syslog(LOG_DEBUG, "ldap: uidNumber = %s", values[0]);
- if (uid != NULL) {
- *uid = atoi(values[0]);
- }
- }
- ldap_value_free(values);
- }
- }
- }
-
+ derive_fullname_from_ldap_result(fullname, fullname_size, ldserver, search_result);
+ *uid = derive_uid_from_ldap(ldserver, search_result);
}
/* free the results */
/* unbind so we can go back in as the authenticating user */
ldap_unbind(ldserver);
-
return(changed_something); /* tell the caller whether we made any changes */
}
+
+/*
+ * Extract a user's Internet email addresses from LDAP.
+ * Returns zero if we got a valid set of addresses; nonzero for error.
+ */
+int extract_email_addresses_from_ldap(char *ldap_dn, char *emailaddrs)
+{
+ LDAP *ldserver = NULL;
+ int i;
+ struct timeval tv;
+ LDAPMessage *search_result = NULL;
+ LDAPMessage *entry = NULL;
+ char **mail;
+ char *attrs[] = { "*","+",NULL};
+
+ if (!ldap_dn) return(1);
+ if (!emailaddrs) return(1);
+
+ if (ctdl_ldap_initialize(&ldserver) != LDAP_SUCCESS) {
+ return(2);
+ }
+
+ ldap_set_option(ldserver, LDAP_OPT_PROTOCOL_VERSION, &ctdl_require_ldap_version);
+ ldap_set_option(ldserver, LDAP_OPT_REFERRALS, (void *)LDAP_OPT_OFF);
+
+ striplt(CtdlGetConfigStr("c_ldap_bind_dn"));
+ striplt(CtdlGetConfigStr("c_ldap_bind_pw"));
+ syslog(LOG_DEBUG, "ldap: bind DN: %s", CtdlGetConfigStr("c_ldap_bind_dn"));
+ i = ldap_simple_bind_s(ldserver,
+ (!IsEmptyStr(CtdlGetConfigStr("c_ldap_bind_dn")) ? CtdlGetConfigStr("c_ldap_bind_dn") : NULL),
+ (!IsEmptyStr(CtdlGetConfigStr("c_ldap_bind_pw")) ? CtdlGetConfigStr("c_ldap_bind_pw") : NULL)
+ );
+ if (i != LDAP_SUCCESS) {
+ syslog(LOG_ERR, "ldap: Cannot bind: %s (%d)", ldap_err2string(i), i);
+ return(3);
+ }
+
+ tv.tv_sec = 10;
+ tv.tv_usec = 0;
+
+ syslog(LOG_DEBUG, "ldap: search: %s", ldap_dn);
+ (void) ldap_search_ext_s(
+ ldserver, // ld
+ ldap_dn, // base
+ LDAP_SCOPE_SUBTREE, // scope
+ NULL, // filter
+ attrs, // attrs (all attributes)
+ 0, // attrsonly (attrs + values)
+ NULL, // serverctrls (none)
+ NULL, // clientctrls (none)
+ &tv, // timeout
+ 1, // sizelimit (1 result max)
+ &search_result // res
+ );
+
+ /* Ignore the return value of ldap_search_ext_s(). Sometimes it returns an error even when
+ * the search succeeds. Instead, we check to see whether search_result is still NULL.
+ */
+ if (search_result == NULL) {
+ syslog(LOG_DEBUG, "ldap: zero search results were returned");
+ ldap_unbind(ldserver);
+ return(4);
+ }
+
+ /* At this point we've got at least one result from our query. If there are multiple
+ * results, we still only look at the first one.
+ */
+ emailaddrs[0] = 0; /* clear out any previous results */
+ entry = ldap_first_entry(ldserver, search_result);
+ if (entry) {
+ syslog(LOG_DEBUG, "ldap: search got user details");
+ mail = ldap_get_values(ldserver, search_result, "mail");
+
+ if (mail) {
+ int q;
+ for (q=0; q<ldap_count_values(mail); ++q) {
+ if (IsDirectory(mail[q], 0)) {
+ if ((strlen(emailaddrs) + strlen(mail[q]) + 2) > 512) {
+ syslog(LOG_ERR, "ldap: can't fit all email addresses into user record");
+ }
+ else {
+ if (!IsEmptyStr(emailaddrs)) {
+ strcat(emailaddrs, "|");
+ }
+ strcat(emailaddrs, mail[q]);
+ }
+ }
+ }
+ }
+ }
+
+ /* free the results */
+ ldap_msgfree(search_result);
+
+ /* unbind so we can go back in as the authenticating user */
+ ldap_unbind(ldserver);
+ return(0);
+}
+
+
+/*
+ * Scan LDAP for users and populate Citadel's user database with everyone
+ */
+void CtdlSynchronizeUsersFromLDAP(void)
+{
+ LDAP *ldserver = NULL;
+ int i;
+ LDAPMessage *search_result = NULL;
+ LDAPMessage *entry = NULL;
+ char *user_dn = NULL;
+ char searchstring[1024];
+ struct timeval tv;
+
+ if ((CtdlGetConfigInt("c_auth_mode") != AUTHMODE_LDAP) && (CtdlGetConfigInt("c_auth_mode") != AUTHMODE_LDAP_AD)) {
+ return; // not running LDAP
+ }
+
+ syslog(LOG_INFO, "ldap: synchronizing Citadel user database from LDAP");
+
+ if (ctdl_ldap_initialize(&ldserver) != LDAP_SUCCESS) {
+ return;
+ }
+
+ ldap_set_option(ldserver, LDAP_OPT_PROTOCOL_VERSION, &ctdl_require_ldap_version);
+ ldap_set_option(ldserver, LDAP_OPT_REFERRALS, (void *)LDAP_OPT_OFF);
+
+ striplt(CtdlGetConfigStr("c_ldap_bind_dn"));
+ striplt(CtdlGetConfigStr("c_ldap_bind_pw"));
+ syslog(LOG_DEBUG, "ldap: bind DN: %s", CtdlGetConfigStr("c_ldap_bind_dn"));
+ i = ldap_simple_bind_s(ldserver,
+ (!IsEmptyStr(CtdlGetConfigStr("c_ldap_bind_dn")) ? CtdlGetConfigStr("c_ldap_bind_dn") : NULL),
+ (!IsEmptyStr(CtdlGetConfigStr("c_ldap_bind_pw")) ? CtdlGetConfigStr("c_ldap_bind_pw") : NULL)
+ );
+ if (i != LDAP_SUCCESS) {
+ syslog(LOG_ERR, "ldap: Cannot bind: %s (%d)", ldap_err2string(i), i);
+ return;
+ }
+
+ tv.tv_sec = 10;
+ tv.tv_usec = 0;
+
+ if (CtdlGetConfigInt("c_auth_mode") == AUTHMODE_LDAP_AD) {
+ snprintf(searchstring, sizeof(searchstring), "(&(objectClass=user)(objectClass=person)(!(objectClass=computer)))");
+ } else {
+ snprintf(searchstring, sizeof(searchstring), "(objectClass=inetOrgPerson)");
+ }
+
+ syslog(LOG_DEBUG, "ldap: search: %s", searchstring);
+ (void) ldap_search_ext_s(
+ ldserver, // ld
+ CtdlGetConfigStr("c_ldap_base_dn"), // base
+ LDAP_SCOPE_SUBTREE, // scope
+ searchstring, // filter
+ NULL, // attrs (all attributes)
+ 0, // attrsonly (attrs + values)
+ NULL, // serverctrls (none)
+ NULL, // clientctrls (none)
+ &tv, // timeout
+ INT_MAX, // sizelimit (max)
+ &search_result // result
+ );
+
+ /* Ignore the return value of ldap_search_ext_s(). Sometimes it returns an error even when
+ * the search succeeds. Instead, we check to see whether search_result is still NULL.
+ */
+ if (search_result == NULL) {
+ syslog(LOG_DEBUG, "ldap: zero search results were returned");
+ ldap_unbind(ldserver);
+ return;
+ }
+
+ syslog(LOG_DEBUG, "ldap: %d entries returned", ldap_count_entries(ldserver, search_result));
+ entry = ldap_first_entry(ldserver, search_result);
+ while (entry) {
+
+ user_dn = ldap_get_dn(ldserver, entry);
+ if (user_dn) {
+ syslog(LOG_DEBUG, "ldap: found %s", user_dn);
+
+ int fullname_size = 256;
+ char fullname[256] = { 0 } ;
+ uid_t uid = (-1);
+
+ derive_fullname_from_ldap_result(fullname, fullname_size, ldserver, entry);
+ uid = derive_uid_from_ldap(ldserver, entry);
+ syslog(LOG_DEBUG, "\033[33mldap: display name: <%s> , uid = <%d>\033[0m", fullname, uid);
+
+ // FIXME now create or update the user
+
+
+ }
+
+ entry = ldap_next_entry(ldserver, entry);
+ }
+
+ /* free the results */
+ ldap_msgfree(search_result);
+
+ /* unbind so we can go back in as the authenticating user */
+ ldap_unbind(ldserver);
+}
+
#endif /* HAVE_LDAP */
projects / citadel.git / blobdiff