Merge pull request #1743 from rubenk/apcups-coverity

[collectd.git] / src / redis.c

diff --git a/src/redis.c b/src/redis.c
index 6fc3792..0814126 100644 (file)
--- a/src/redis.c
+++ b/src/redis.c
@@ -25,7 +25,6 @@
 #include "plugin.h"
 #include "configfile.h"
 
-#include <pthread.h>
 #include <sys/time.h>
 #include <hiredis/hiredis.h>
 
@@ -130,7 +129,7 @@ static redis_query_t *redis_config_query (oconfig_item_t *ci) /* {{{ */
 
     rq = calloc(1, sizeof(*rq));
     if (rq == NULL) {
-        ERROR("redis plugin: calloca failed adding redis_query.");
+        ERROR("redis plugin: calloc failed adding redis_query.");
         return NULL;
     }
     status = cf_util_get_string_buffer(ci, rq->query, sizeof(rq->query));
@@ -294,7 +293,7 @@ static int redis_init (void) /* {{{ */
   return (0);
 } /* }}} int redis_init */
 
-int redis_handle_info (char *node, char const *info_line, char const *type, char const *type_instance, char const *field_name, int ds_type) /* {{{ */
+static int redis_handle_info (char *node, char const *info_line, char const *type, char const *type_instance, char const *field_name, int ds_type) /* {{{ */
 {
   char *str = strstr (info_line, field_name);
   static char buf[MAX_REDIS_VAL_SIZE];
@@ -321,7 +320,7 @@ int redis_handle_info (char *node, char const *info_line, char const *type, char
 
 } /* }}} int redis_handle_info */
 
-int redis_handle_query (redisContext *rh, redis_node_t *rn, redis_query_t *rq) /* {{{ */
+static int redis_handle_query (redisContext *rh, redis_node_t *rn, redis_query_t *rq) /* {{{ */
 {
     redisReply *rr;
     const data_set_t *ds;
@@ -399,25 +398,27 @@ static int redis_read (void) /* {{{ */
 
     if (strlen (rn->passwd) > 0)
     {
-      DEBUG ("redis plugin: authenticanting node `%s' passwd(%s).", rn->name, rn->passwd);
-      rr = redisCommand (rh, "AUTH %s", rn->passwd);
+      DEBUG ("redis plugin: authenticating node `%s' passwd(%s).", rn->name, rn->passwd);
 
-      if (rr == NULL || rr->type != REDIS_REPLY_STATUS)
+      if ((rr = redisCommand (rh, "AUTH %s", rn->passwd)) == NULL)
       {
         WARNING ("redis plugin: unable to authenticate on node `%s'.", rn->name);
-        if (rr != NULL)
-          freeReplyObject (rr);
+        goto redis_fail;
+      }
 
-        redisFree (rh);
-        continue;
+      if (rr->type != REDIS_REPLY_STATUS)
+      {
+        WARNING ("redis plugin: invalid authentication on node `%s'.", rn->name);
+        goto redis_fail;
       }
+
+      freeReplyObject (rr);
     }
 
     if ((rr = redisCommand(rh, "INFO")) == NULL)
     {
-      WARNING ("redis plugin: unable to connect to node `%s'.", rn->name);
-      redisFree (rh);
-      continue;
+      WARNING ("redis plugin: unable to get info from node `%s'.", rn->name);
+      goto redis_fail;
     }
 
     redis_handle_info (rn->name, rr->str, "uptime", NULL, "uptime_in_seconds", DS_TYPE_GAUGE);
@@ -439,11 +440,12 @@ static int redis_read (void) /* {{{ */
     redis_handle_info (rn->name, rr->str, "total_bytes", "input", "total_net_input_bytes", DS_TYPE_DERIVE);
     redis_handle_info (rn->name, rr->str, "total_bytes", "output", "total_net_output_bytes", DS_TYPE_DERIVE);
 
-    freeReplyObject (rr);
-
     for (rq = rn->queries; rq != NULL; rq = rq->next)
         redis_handle_query(rh, rn, rq);
 
+redis_fail:
+    if (rr != NULL)
+      freeReplyObject (rr);
     redisFree (rh);
   }