From e5c29893a318c0f1571c9918ab2c7c23dca3c952 Mon Sep 17 00:00:00 2001
From: Tomas Krizek <tkrizek@redhat.com>
Date: Mon, 27 Mar 2017 19:41:05 +0200
Subject: [PATCH] Coverity: fix REVERSE_INULL for pevent->inst

With the DynDB API changes, the ldap instance is acquired
differently. Previously, obtaining the instance could fail when
LDAP was disconnecting, thus the NULL check was necessary in the
cleanup part.

Now, inst is obtained directly from the API. I'm not sure what is
the exact behaviour in edge cases such as LDAP disconnecting, so
I perform the NULL check a bit earlier, just to be safe.
---
 src/ldap_helper.c | 42 +++++++++++++++++++++---------------------
 1 file changed, 21 insertions(+), 21 deletions(-)

diff --git a/src/ldap_helper.c b/src/ldap_helper.c
index 1fa0ec9adfa2b9ca589587244da03cc6f0584919..e0c4b76f0bd350eda2d81588e6efb67b5221d630 100644
--- a/src/ldap_helper.c
+++ b/src/ldap_helper.c
@@ -3714,6 +3714,7 @@ update_zone(isc_task_t *task, isc_event_t *event)
 	mctx = pevent->mctx;
 	dns_name_init(&prevname, NULL);
 
+	REQUIRE(inst != NULL);
 	INSIST(task == inst->task); /* For task-exclusive mode */
 
 	if (SYNCREPL_DEL(pevent->chgtype)) {
@@ -3730,12 +3731,11 @@ update_zone(isc_task_t *task, isc_event_t *event)
 	}
 
 cleanup:
-	if (inst != NULL) {
-		sync_concurr_limit_signal(inst->sctx);
-		sync_event_signal(inst->sctx, pevent);
-		if (dns_name_dynamic(&prevname))
-			dns_name_free(&prevname, inst->mctx);
-	}
+	sync_concurr_limit_signal(inst->sctx);
+	sync_event_signal(inst->sctx, pevent);
+	if (dns_name_dynamic(&prevname))
+		dns_name_free(&prevname, inst->mctx);
+
 	if (result != ISC_R_SUCCESS)
 		log_error_r("update_zone (syncrepl) failed for %s. "
 			    "Zones can be outdated, run `rndc reload`",
@@ -3760,14 +3760,14 @@ update_config(isc_task_t * task, isc_event_t *event)
 
 	mctx = pevent->mctx;
 
+	REQUIRE(inst != NULL);
 	INSIST(task == inst->task); /* For task-exclusive mode */
 	CHECK(ldap_parse_configentry(entry, inst));
 
 cleanup:
-	if (inst != NULL) {
-		sync_concurr_limit_signal(inst->sctx);
-		sync_event_signal(inst->sctx, pevent);
-	}
+	sync_concurr_limit_signal(inst->sctx);
+	sync_event_signal(inst->sctx, pevent);
+
 	if (result != ISC_R_SUCCESS)
 		log_error_r("update_config (syncrepl) failed for %s. "
 			    "Configuration can be outdated, run `rndc reload`",
@@ -3790,14 +3790,14 @@ update_serverconfig(isc_task_t * task, isc_event_t *event)
 
 	mctx = pevent->mctx;
 
+	REQUIRE(inst != NULL);
 	INSIST(task == inst->task); /* For task-exclusive mode */
 	CHECK(ldap_parse_serverconfigentry(entry, inst));
 
 cleanup:
-	if (inst != NULL) {
-		sync_concurr_limit_signal(inst->sctx);
-		sync_event_signal(inst->sctx, pevent);
-	}
+	sync_concurr_limit_signal(inst->sctx);
+	sync_event_signal(inst->sctx, pevent);
+
 	if (result != ISC_R_SUCCESS)
 		log_error_r("update_serverconfig (syncrepl) failed for %s. "
 			    "Configuration can be outdated, run `rndc reload`",
@@ -3860,6 +3860,7 @@ update_record(isc_task_t *task, isc_event_t *event)
 	dns_name_init(&prevname, NULL);
 	dns_name_init(&prevorigin, NULL);
 
+	REQUIRE(inst != NULL);
 	CHECK(zr_get_zone_ptr(inst->zone_register, &entry->zone_name, &raw, &secure));
 	zone_found = ISC_TRUE;
 
@@ -4020,13 +4021,12 @@ cleanup:
 			    ldap_entry_logname(entry), pevent->chgtype);
 	}
 
-	if (inst != NULL) {
-		sync_concurr_limit_signal(inst->sctx);
-		if (dns_name_dynamic(&prevname))
-			dns_name_free(&prevname, inst->mctx);
-		if (dns_name_dynamic(&prevorigin))
-			dns_name_free(&prevorigin, inst->mctx);
-	}
+	sync_concurr_limit_signal(inst->sctx);
+	if (dns_name_dynamic(&prevname))
+		dns_name_free(&prevname, inst->mctx);
+	if (dns_name_dynamic(&prevorigin))
+		dns_name_free(&prevorigin, inst->mctx);
+
 	if (raw != NULL)
 		dns_zone_detach(&raw);
 	if (secure != NULL)
-- 
2.9.3