X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Fopenvpn.c;h=00ae736ad4b01c70555f509c0b3580afb8fa8329;hb=43954e07f30d05b2da8319749400c9bf4d01c23c;hp=93c8f1b58363fbf8f7a27f4f03a5b4077f74fee8;hpb=40e77dd34f9a8466165a8b7d724faeb337c90414;p=collectd.git

diff --git a/src/openvpn.c b/src/openvpn.c
index 93c8f1b5..00ae736a 100644
--- a/src/openvpn.c
+++ b/src/openvpn.c
@@ -26,6 +26,7 @@
  **/
 
 #include "collectd.h"
+
 #include "common.h"
 #include "plugin.h"
 
@@ -95,7 +96,8 @@ static int openvpn_strsplit (char *string, char **fields, size_t size)
 } /* int openvpn_strsplit */
 
 /* dispatches number of users */
-static void numusers_submit (char *pinst, char *tinst, gauge_t value)
+static void numusers_submit (const char *pinst, const char *tinst,
+		gauge_t value)
 {
 	value_t values[1];
 	value_list_t vl = VALUE_LIST_INIT;
@@ -115,8 +117,10 @@ static void numusers_submit (char *pinst, char *tinst, gauge_t value)
 	plugin_dispatch_values (&vl);
 } /* void numusers_submit */
 
-/* dispatches stats about traffic (TCP or UDP) generated by the tunnel per single endpoint */
-static void iostats_submit (char *pinst, char *tinst, derive_t rx, derive_t tx)
+/* dispatches stats about traffic (TCP or UDP) generated by the tunnel
+ * per single endpoint */
+static void iostats_submit (const char *pinst, const char *tinst,
+		derive_t rx, derive_t tx)
 {
 	value_t values[2];
 	value_list_t vl = VALUE_LIST_INIT;
@@ -145,7 +149,7 @@ static void iostats_submit (char *pinst, char *tinst, derive_t rx, derive_t tx)
 } /* void traffic_submit */
 
 /* dispatches stats about data compression shown when in single mode */
-static void compression_submit (char *pinst, char *tinst,
+static void compression_submit (const char *pinst, const char *tinst,
 		derive_t uncompressed, derive_t compressed)
 {
 	value_t values[2];
@@ -168,7 +172,7 @@ static void compression_submit (char *pinst, char *tinst,
 	plugin_dispatch_values (&vl);
 } /* void compression_submit */
 
-static int single_read (char *name, FILE *fh)
+static int single_read (const char *name, FILE *fh)
 {
 	char buffer[1024];
 	char *fields[4];
@@ -261,7 +265,7 @@ static int single_read (char *name, FILE *fh)
 } /* int single_read */
 
 /* for reading status version 1 */
-static int multi1_read (char *name, FILE *fh)
+static int multi1_read (const char *name, FILE *fh)
 {
 	char buffer[1024];
 	char *fields[10];
@@ -324,7 +328,7 @@ static int multi1_read (char *name, FILE *fh)
 } /* int multi1_read */
 
 /* for reading status version 2 */
-static int multi2_read (char *name, FILE *fh)
+static int multi2_read (const char *name, FILE *fh)
 {
 	char buffer[1024];
 	char *fields[10];
@@ -386,7 +390,7 @@ static int multi2_read (char *name, FILE *fh)
 } /* int multi2_read */
 
 /* for reading status version 3 */
-static int multi3_read (char *name, FILE *fh)
+static int multi3_read (const char *name, FILE *fh)
 {
 	char buffer[1024];
 	char *fields[15];
@@ -451,7 +455,7 @@ static int multi3_read (char *name, FILE *fh)
 } /* int multi3_read */
 
 /* for reading status version 4 */
-static int multi4_read (char *name, FILE *fh)
+static int multi4_read (const char *name, FILE *fh)
 {
 	char buffer[1024];
 	char *fields[11];
@@ -518,12 +522,12 @@ static int multi4_read (char *name, FILE *fh)
 static int openvpn_read (void)
 {
 	FILE *fh;
-	int  i, read;
+	int  read;
 
 	read = 0;
 
 	/* call the right read function for every status entry in the list */
-	for (i = 0; i < vpn_num; i++)
+	for (int i = 0; i < vpn_num; i++)
 	{
 		int vpn_read = 0;
 
@@ -647,7 +651,7 @@ static int openvpn_config (const char *key, const char *value)
 	if (strcasecmp ("StatusFile", key) == 0)
 	{
 		char    *status_file, *status_name, *filename;
-		int     status_version, i;
+		int     status_version;
 		vpn_status_t *temp;
 
 		/* try to detect the status file format */
@@ -683,7 +687,7 @@ static int openvpn_config (const char *key, const char *value)
 		}
 
 		/* scan the list looking for a clone */
-		for (i = 0; i < vpn_num; i++)
+		for (int i = 0; i < vpn_num; i++)
 		{
 			if (strcasecmp (vpn_list[i]->name, status_name) == 0)
 			{
@@ -696,7 +700,7 @@ static int openvpn_config (const char *key, const char *value)
 		}
 
 		/* create a new vpn element since file, version and name are ok */
-		temp = (vpn_status_t *) malloc (sizeof (vpn_status_t));
+		temp = malloc (sizeof (*temp));
 		if (temp == NULL)
 		{
 			char errbuf[1024];
@@ -709,17 +713,19 @@ static int openvpn_config (const char *key, const char *value)
 		temp->version = status_version;
 		temp->name = status_name;
 
-		vpn_list = (vpn_status_t **) realloc (vpn_list, (vpn_num + 1) * sizeof (vpn_status_t *));
-		if (vpn_list == NULL)
+		vpn_status_t **tmp_list = realloc (vpn_list, (vpn_num + 1) * sizeof (*vpn_list));
+		if (tmp_list == NULL)
 		{
 			char errbuf[1024];
 			ERROR ("openvpn plugin: realloc failed: %s",
 					sstrerror (errno, errbuf, sizeof (errbuf)));
 
+			sfree (vpn_list);
 			sfree (temp->file);
 			sfree (temp);
 			return (1);
 		}
+		vpn_list = tmp_list;
 
 		vpn_list[vpn_num] = temp;
 		vpn_num++;
@@ -772,9 +778,7 @@ static int openvpn_config (const char *key, const char *value)
 /* shutdown callback */
 static int openvpn_shutdown (void)
 {
-	int i;
-
-	for (i = 0; i < vpn_num; i++)
+	for (int i = 0; i < vpn_num; i++)
 	{
 		sfree (vpn_list[i]->file);
 		sfree (vpn_list[i]);