func main() {
resp, err := http.Get(apnicFile)
if err != nil {
panic(err)
}
if resp.StatusCode != 200 {
panic(fmt.Errorf("Unexpected status %d", resp.StatusCode))
}
defer resp.Body.Close()
scanner := bufio.NewScanner(resp.Body)
ipNet := v2net.NewIPNet()
for scanner.Scan() {
line := scanner.Text()
line = strings.TrimSpace(line)
parts := strings.Split(line, "|")
if len(parts) < 5 {
continue
}
if strings.ToLower(parts[1]) != "cn" || strings.ToLower(parts[2]) != "ipv4" {
continue
}
ip := parts[3]
count, err := strconv.Atoi(parts[4])
if err != nil {
continue
}
mask := 32 - int(math.Floor(math.Log2(float64(count))+0.5))
cidr := fmt.Sprintf("%s/%d", ip, mask)
_, t, err := net.ParseCIDR(cidr)
if err != nil {
panic(err)
}
ipNet.Add(t)
}
dump := ipNet.Serialize()
fmt.Println("map[uint32]byte {")
for i := 0; i < len(dump); i += 2 {
fmt.Println(dump[i], ": ", dump[i+1], ",")
}
fmt.Println("}")
}
func main() {
resp, err := http.Get(apnicFile)
if err != nil {
panic(err)
}
if resp.StatusCode != 200 {
panic(fmt.Errorf("Unexpected status %d", resp.StatusCode))
}
defer resp.Body.Close()
scanner := bufio.NewScanner(resp.Body)
ipNet := v2net.NewIPNet()
for scanner.Scan() {
line := scanner.Text()
line = strings.TrimSpace(line)
parts := strings.Split(line, "|")
if len(parts) < 5 {
continue
}
if strings.ToLower(parts[1]) != "cn" || strings.ToLower(parts[2]) != "ipv4" {
continue
}
ip := parts[3]
count, err := strconv.Atoi(parts[4])
if err != nil {
continue
}
mask := 32 - int(math.Floor(math.Log2(float64(count))+0.5))
cidr := fmt.Sprintf("%s/%d", ip, mask)
_, t, err := net.ParseCIDR(cidr)
if err != nil {
panic(err)
}
ipNet.Add(t)
}
dump := ipNet.Serialize()
file, err := os.OpenFile("chinaip_init.go", os.O_WRONLY|os.O_TRUNC|os.O_CREATE, 0644)
if err != nil {
log.Fatalf("Failed to generate chinaip_init.go: %v", err)
}
defer file.Close()
fmt.Fprintln(file, "package rules")
fmt.Fprintln(file, "import (")
fmt.Fprintln(file, "v2net \"github.com/v2ray/v2ray-core/common/net\"")
fmt.Fprintln(file, ")")
fmt.Fprintln(file, "var (")
fmt.Fprintln(file, "chinaIPNet *v2net.IPNet")
fmt.Fprintln(file, ")")
fmt.Fprintln(file, "func init() {")
fmt.Fprintln(file, "chinaIPNet = v2net.NewIPNetInitialValue(map[uint32]byte {")
for i := 0; i < len(dump); i += 2 {
fmt.Fprintln(file, dump[i], ": ", dump[i+1], ",")
}
fmt.Fprintln(file, "})")
fmt.Fprintln(file, "}")
}