Add error checking to CIDRGet and make it quiet.

src/util-cidr.c

@@ -1,6 +1,7 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
+#include <arpa/inet.h>
 
 static u_int32_t cidrs[33];
 
@@ -9,11 +10,13 @@ void CIDRInit(void) {
 
     for (i = 0; i < 33; i++) {
         cidrs[i] = htonl(0xFFFFFFFF << (32 - i));
-        printf("CIDRInit: cidrs[%02d] = 0x%08X\n", i, cidrs[i]);
+        //printf("CIDRInit: cidrs[%02d] = 0x%08X\n", i, cidrs[i]);
     }
 }
 
 u_int32_t CIDRGet(int cidr) {
+    if (cidr < 0 || cidr > 32)
+        return 0;
     return cidrs[cidr];
 }