iptables plugin: fix implicit conversion warnings

  CC       src/iptables_la-iptables.lo
src/iptables.c:139:29: warning: implicit conversion loses integer precision: 'unsigned long' to 'int' [-Wshorten-64-to-32]
  table_len = strlen(table) + 1;
            ~ ~~~~~~~~~~~~~~^~~
src/iptables.c:147:29: warning: implicit conversion loses integer precision: 'unsigned long' to 'int' [-Wshorten-64-to-32]
  chain_len = strlen(chain) + 1;
            ~ ~~~~~~~~~~~~~~^~~
2 warnings generated.

diff --git a/src/iptables.c b/src/iptables.c
index 8fad588..225ed2c 100644 (file)
--- a/src/iptables.c
+++ b/src/iptables.c
@@ -103,9 +103,7 @@ static int iptables_config(const char *key, const char *value) {
   ip_chain_t temp = {0};
   ip_chain_t *final, **list;
   char *table;
-  int table_len;
   char *chain;
-  int chain_len;
 
   char *value_copy;
   char *fields[4];
@@ -136,16 +134,16 @@ static int iptables_config(const char *key, const char *value) {
   table = fields[0];
   chain = fields[1];
 
-  table_len = strlen(table) + 1;
-  if ((unsigned int)table_len > sizeof(temp.table)) {
+  size_t table_len = strlen(table) + 1;
+  if (table_len > sizeof(temp.table)) {
     ERROR("Table `%s' too long.", table);
     free(value_copy);
     return 1;
   }
   sstrncpy(temp.table, table, table_len);
 
-  chain_len = strlen(chain) + 1;
-  if ((unsigned int)chain_len > sizeof(temp.chain)) {
+  size_t chain_len = strlen(chain) + 1;
+  if (chain_len > sizeof(temp.chain)) {
     ERROR("Chain `%s' too long.", chain);
     free(value_copy);
     return 1;