新版本采用libipset库操作ipset集合，采用libpcap、libcap抓包获取源IP

qqwry/qqwry.c

@@ -52,7 +52,8 @@ int qqwry_match(char *pattern, char *subject)
     return ret;
 }
 
-iconv_t initialize_iconv(const char *target, const char *src) {
+iconv_t initialize_iconv(const char *target, const char *src)
+{
     // 创建转换描述符
     iconv_t iconvDesc = iconv_open(target, src);
 
@@ -60,9 +61,8 @@ iconv_t initialize_iconv(const char *target, const char *src) {
     if (iconvDesc == (iconv_t) - 1) {
         // 如果失败，打印错误信息并返回 NULL
         fprintf(stderr, "Error: Conversion from '%s' to '%s' is not available.\n", src, target);
-        return (iconv_t)NULL;
+        return (iconv_t) NULL;
     }
-
     // 成功时返回 iconv_t 描述符
     return iconvDesc;
 }
@@ -165,23 +165,18 @@ void qqwry_back(unsigned int byte)
     qqwry_seek(currPos - byte);
 }
 
-
-char *long2ip(int ip) {
+char *long2ip(int ip)
+{
     // 分配16字节内存用于存储IP字符串
     char *ip_str = malloc(16 * sizeof(char));
-    
+
     if (ip_str == NULL) {
         // 如果内存分配失败，返回NULL
         fprintf(stderr, "Memory allocation failed\n");
         return NULL;
     }
-
     // 将IP转换为字符串
-    snprintf(ip_str, 16, "%d.%d.%d.%d", 
-             (ip >> 24) & 0xFF, 
-             (ip >> 16) & 0xFF, 
-             (ip >> 8) & 0xFF, 
-             ip & 0xFF);
+    snprintf(ip_str, 16, "%d.%d.%d.%d", (ip >> 24) & 0xFF, (ip >> 16) & 0xFF, (ip >> 8) & 0xFF, ip & 0xFF);
 
     return ip_str;
 }
@@ -341,24 +336,15 @@ int get_location(char *ip)
     unsigned int offset = search_record(ip);
     unsigned int tmp_offset;
     qqwry_seek(offset + 4);     // skip 4 byte to get the offset value pointing to record data
-    readvalue(3, (int *)(&tmp_offset));  // the offset pointing to the data
+    readvalue(3, (int *)(&tmp_offset)); // the offset pointing to the data
     get_data(tmp_offset);
 
     return 0;
 }
 
-char *qqwry_(char *ip)
+char *qqwry_(char *dat, char *ip)
 {
-    char *qqdb_path = "qqwry.dat";
-    if (access(qqdb_path, F_OK) == -1) { // 判断 ip2region 地址定位库是否存在
-        qqdb_path = "qqwry/qqwry.dat";
-        if (access(qqdb_path, F_OK) == -1) {
-            printf("qqwry.dat DOESN'T EXIST!\n");
-            return NULL;
-        }
-    }
-    qqwry_init(qqdb_path);
-
+    qqwry_init(dat);
 
     get_location(ip);
     //printf("%s-%s %d\n", ip_defaults.parent_data, ip_defaults.child_data, ip_defaults.isp);