Continued working on retrieving IP address from message

main.c

@@ -66,6 +66,14 @@ int main() {
 					} else {
 						if (dest_address[i] == NULL) {
 							dest_address[i] = fetch_address(buffer);
+							if (dest_address[i] == NULL) {
+								printf("Invalid message format\n");
+								exit(241);
+							}
+							if (check_ip_ver(dest_address[i]) == -1) {
+								printf("Invalid address: %s\n",dest_address[i]);
+								exit(242);
+							}
 
 						}
 						

message_helpers.c

@@ -4,14 +4,12 @@
 
 char* fetch_address(char* message) {
 	char* token = malloc (sizeof(char) * strlen(message));
-	token = strtok(message," ");
+	token = strtok(message," \n");
 	if (strcmp(token,"TO:") == 0) {
-		token = strtok(NULL,"");
+		token = strtok(NULL," \n");
+	} else {
+		return NULL;
 	}
 
-	if (check_ip_ver(token) == -1) {
-		return NULL;
-	} else {
 	return token;
 }
-}