Add support for LDAP debug output in Samba log file.

Logging of the ldap libraries appears with a [LDAP] prefix
inside the samba logs. This is controlled by two new parameters:

* "ldap debug level" sets the debug level of the ldap libraries.
  It is the bit-field as understood by the openldap server.

* "ldap debug threshold" is the samba debug level at which ldap
  logging appears inside the samba logs.

This probably needs some configure tests since it makes
use of the LBER_OPT_LOG_PRINT_FN option to redirect the
debug output of the ldap libraries.

Michael
(This used to be commit 15c25990bd0bfa3145ab3c26d2bdda72993d005c)

1 files changed, 52 insertions, 0 deletions

diff --git a/source3/lib/ldap_debug_handler.c b/source3/lib/ldap_debug_handler.c
new file mode 100644
index 0000000000..88d0c0beec
--- /dev/null
+++ b/source3/lib/ldap_debug_handler.c
@@ -0,0 +1,52 @@
+/*
+ * Unix SMB/CIFS implementation.
+ * Intercept libldap debug output.
+ * Copyright (C) Michael Adam 2008
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "includes.h"
+
+#if HAVE_LDAP
+
+static void samba_ldap_log_print_fn(LDAP_CONST char *data)
+{
+	DEBUG(lp_ldap_debug_threshold(), ("[LDAP] %s", data));
+}
+
+#endif
+
+void init_ldap_debugging(void)
+{
+#if HAVE_LDAP
+	int ret;
+	int ldap_debug_level = lp_ldap_debug_level();
+
+	ret = ldap_set_option(NULL, LDAP_OPT_DEBUG_LEVEL, &ldap_debug_level);
+	if (ret != LDAP_OPT_SUCCESS) {
+		DEBUG(10, ("Error setting LDAP debug level.\n"));
+	}
+
+	if (ldap_debug_level == 0) {
+		return;
+	}
+
+	ret = ber_set_option(NULL, LBER_OPT_LOG_PRINT_FN,
+			     (void *)samba_ldap_log_print_fn);
+	if (ret != LBER_OPT_SUCCESS) {
+		DEBUG(10, ("Error setting LBER log print function.\n"));
+	}
+#endif /* HAVE_LDAP */
+}