support for automatic reconnects added

modules_s/ldap/ld_cfg.c

@@ -446,7 +446,7 @@ struct ld_con_info* ld_find_conn_info(str* conn_id)
 }
 
 
-int ld_cfg_validity_check(struct ld_cfg *cfg)
+static int ld_cfg_validity_check(struct ld_cfg *cfg)
 {
 	struct ld_cfg *pcfg;
 
@@ -488,8 +488,10 @@ int ld_load_cfg(str* filename)
 	}
 	cfg_parser_close(parser);
 
-	if (ld_cfg_validity_check(cfg))
+	if (ld_cfg_validity_check(cfg)) {
+		ld_cfg_free();
 		return -1;
+	}
 
 	return 0;
 }

modules_s/ldap/ld_cmd.c

@@ -162,6 +162,7 @@ int ld_cmd_exec(db_res_t* res, db_cmd_t* cmd)
 	char* filter, *err_desc;
 	int ret, err;
 	LDAPMessage* msg;
+	int reconn_cnt = glb_reconn_cnt;
 
 	filter = NULL;
 	err_desc = NULL;
@@ -179,16 +180,33 @@ int ld_cmd_exec(db_res_t* res, db_cmd_t* cmd)
 		goto error;
 	}
 
-	ret = ldap_search_ext_s(lcon->con, lcmd->base, lcmd->scope, filter,
-							lcmd->result, 0, NULL, NULL,
-							lcmd->timelimit.tv_sec ? &lcmd->timelimit : NULL,
-							lcmd->sizelimit,
-							&msg);
-
-	if (ret != LDAP_SUCCESS) {
-		ERR("ldap: Error in ldap_search: %s\n", ldap_err2string(ret));
-		goto error;
-	}
+	do {
+		if (lcon->flags & LD_CONNECTED) {
+			ret = ldap_search_ext_s(lcon->con, lcmd->base, lcmd->scope, filter,
+									lcmd->result, 0, NULL, NULL,
+									lcmd->timelimit.tv_sec ? &lcmd->timelimit : NULL,
+									lcmd->sizelimit,
+									&msg);
+		} else {
+			ret = LDAP_SERVER_DOWN;
+		}
+		if (ret != LDAP_SUCCESS) {
+			ERR("ldap: Error in ldap_search: %s\n", ldap_err2string(ret));
+			if (ret == LDAP_SERVER_DOWN) {
+				lcon->flags &= ~LD_CONNECTED;
+				do {
+					if (!reconn_cnt) {
+						ERR("ldap: maximum reconnection attempt reached! giving up\n");
+						goto error;
+					}
+					reconn_cnt--;
+					err = ld_con_connect(con);
+				} while (err != 0);
+			} else {
+				goto error;
+			}
+		}
+	} while (ret != LDAP_SUCCESS);
 
 	ret = ldap_parse_result(lcon->con, msg, &err, NULL, &err_desc, NULL, NULL, 0);
 	if (ret != LDAP_SUCCESS) {

modules_s/ldap/ld_mod.c

@@ -1,5 +1,5 @@
-/* 
- * $Id$ 
+/*
+ * $Id$
  *
  * LDAP Database Driver for SER
  *
@@ -18,15 +18,15 @@
  * 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., 
+ * with this program; if not, write to the Free Software Foundation, Inc.,
  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  */
 
 /** \addtogroup ldap
- * @{ 
+ * @{
  */
 
-/** \file 
+/** \file
  * LDAP module interface.
  */
 
@@ -49,6 +49,7 @@
 #include <ldap.h>
 
 str ld_cfg_file = STR_STATIC_INIT("ldap.cfg");
+int glb_reconn_cnt = 3;
 
 static int ld_mod_init(void);
 static void ld_mod_destroy(void);
@@ -82,7 +83,8 @@ static cmd_export_t cmds[] = {
  * Exported parameters
  */
 static param_export_t params[] = {
-	{"config", PARAM_STR, &ld_cfg_file},	
+	{"config", PARAM_STR, &ld_cfg_file},
+	{"reconnect_attempt", PARAM_INT, &glb_reconn_cnt},
 	{0, 0, 0}
 };
 
@@ -467,25 +469,25 @@ int ldap_test(void)
 				case DB_BITMAP:
 					ERR("%s: %d\n", rec->fld[i].name, rec->fld[i].v.int4);
 					break;
-					
+
 				case DB_DATETIME:
 					times = ctime(&rec->fld[i].v.time);
 					ERR("%s: %d:%.*s\n", rec->fld[i].name, rec->fld[i].v.time, strlen(times) - 1, times);
 					break;
-					
+
 				case DB_DOUBLE:
 					ERR("%s: %f\n", rec->fld[i].name, rec->fld[i].v.dbl);
 					break;
-					
+
 				case DB_FLOAT:
 					ERR("%s: %f\n", rec->fld[i].name, rec->fld[i].v.flt);
 					break;
-					
+
 				case DB_STR:
 				case DB_BLOB:
 					ERR("%s: %.*s\n", rec->fld[i].name, rec->fld[i].v.lstr.len, rec->fld[i].v.lstr.s);
 					break;
-					
+
 				case DB_CSTR:
 					ERR("%s: %s\n", rec->fld[i].name, rec->fld[i].v.cstr);
 					break;

modules_s/ldap/ld_mod.h

@@ -1,5 +1,5 @@
-/* 
- * $Id$ 
+/*
+ * $Id$
  *
  * LDAP Database Driver for SER
  *
@@ -18,7 +18,7 @@
  * 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., 
+ * with this program; if not, write to the Free Software Foundation, Inc.,
  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  */
 
@@ -26,11 +26,13 @@
 #define _LD_MOD_H
 
 /** @defgroup ldap LDAP Database Driver
- * @ingroup DB_API 
+ * @ingroup DB_API
  */
 /** @{ */
 
-/** \file 
+extern int glb_reconn_cnt;
+
+/** \file
  * LDAP module interface.
  */