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Diffstat (limited to 'source3/libads/ldap_utils.c')
-rw-r--r--source3/libads/ldap_utils.c96
1 files changed, 96 insertions, 0 deletions
diff --git a/source3/libads/ldap_utils.c b/source3/libads/ldap_utils.c
new file mode 100644
index 0000000000..907f7c8aff
--- /dev/null
+++ b/source3/libads/ldap_utils.c
@@ -0,0 +1,96 @@
+/*
+ Unix SMB/CIFS implementation.
+
+ Some Helpful wrappers on LDAP
+
+ Copyright (C) Andrew Tridgell 2001
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ 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.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+
+#ifdef HAVE_LDAP
+/*
+ a wrapper around ldap_search_s that retries depending on the error code
+ this is supposed to catch dropped connections and auto-reconnect
+*/
+ADS_STATUS ads_do_search_retry(ADS_STRUCT *ads, const char *bind_path, int scope,
+ const char *exp,
+ const char **attrs, void **res)
+{
+ ADS_STATUS status;
+ int count = 3;
+ char *bp;
+
+ if (!ads->ld &&
+ time(NULL) - ads->last_attempt < ADS_RECONNECT_TIME) {
+ return ADS_ERROR(LDAP_SERVER_DOWN);
+ }
+
+ bp = strdup(bind_path);
+
+ if (!bp)
+ return ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
+
+ while (count--) {
+ status = ads_do_search_all(ads, bp, scope, exp, attrs, res);
+ if (ADS_ERR_OK(status)) {
+ DEBUG(5,("Search for %s gave %d replies\n",
+ exp, ads_count_replies(ads, *res)));
+ free(bp);
+ return status;
+ }
+
+ if (*res) ads_msgfree(ads, *res);
+ *res = NULL;
+ DEBUG(3,("Reopening ads connection to realm '%s' after error %s\n",
+ ads->config.realm, ads_errstr(status)));
+ if (ads->ld) {
+ ldap_unbind(ads->ld);
+ }
+ ads->ld = NULL;
+ status = ads_connect(ads);
+ if (!ADS_ERR_OK(status)) {
+ DEBUG(1,("ads_search_retry: failed to reconnect (%s)\n",
+ ads_errstr(status)));
+ ads_destroy(&ads);
+ free(bp);
+ return status;
+ }
+ }
+ free(bp);
+
+ DEBUG(1,("ads reopen failed after error %s\n", ads_errstr(status)));
+ return status;
+}
+
+
+ADS_STATUS ads_search_retry(ADS_STRUCT *ads, void **res,
+ const char *exp,
+ const char **attrs)
+{
+ return ads_do_search_retry(ads, ads->config.bind_path, LDAP_SCOPE_SUBTREE,
+ exp, attrs, res);
+}
+
+ADS_STATUS ads_search_retry_dn(ADS_STRUCT *ads, void **res,
+ const char *dn,
+ const char **attrs)
+{
+ return ads_do_search_retry(ads, dn, LDAP_SCOPE_BASE,
+ "(objectclass=*)", attrs, res);
+}
+#endif