优化查询IP地址

common.h

@@ -18,6 +18,10 @@
 #include <netdb.h>
 #include <sys/utsname.h>
 
+#include <sys/resource.h>
+#include <signal.h>
+#include <sys/prctl.h>
+
 #define PRINT_LOG_FILE "Gateway.log"
 #define BUFFER 1024
 #define WHITELIST_IP_NUM 1024
@@ -31,4 +35,8 @@ extern int isregion(char *str, char (*region_list)[WHITELIST_IP_NUM]);
 
 extern int8_t copy_new_mem(char *src, int src_len, char **dest);
 
+extern int is_valid_ip(const char *ip);
+extern int nice_(int increment);
+extern int command_exists(const char *command);
+
 #endif