func (v *RoutingRule) BuildCondition() (Condition, error) {
conds := NewConditionChan()
if len(v.Domain) > 0 {
anyCond := NewAnyCondition()
for _, domain := range v.Domain {
if domain.Type == Domain_Plain {
anyCond.Add(NewPlainDomainMatcher(domain.Value))
} else {
matcher, err := NewRegexpDomainMatcher(domain.Value)
if err != nil {
return nil, err
}
anyCond.Add(matcher)
}
}
conds.Add(anyCond)
}
if len(v.Cidr) > 0 {
ipv4Net := v2net.NewIPNet()
ipv6Cond := NewAnyCondition()
hasIpv6 := false
for _, ip := range v.Cidr {
switch len(ip.Ip) {
case net.IPv4len:
ipv4Net.AddIP(ip.Ip, byte(ip.Prefix))
case net.IPv6len:
hasIpv6 = true
matcher, err := NewCIDRMatcher(ip.Ip, ip.Prefix, false)
if err != nil {
return nil, err
}
ipv6Cond.Add(matcher)
default:
return nil, errors.New("Router: Invalid IP length.")
}
}
if !ipv4Net.IsEmpty() && hasIpv6 {
cond := NewAnyCondition()
cond.Add(NewIPv4Matcher(ipv4Net, false))
cond.Add(ipv6Cond)
conds.Add(cond)
} else if !ipv4Net.IsEmpty() {
conds.Add(NewIPv4Matcher(ipv4Net, false))
} else if hasIpv6 {
conds.Add(ipv6Cond)
}
}
if v.PortRange != nil {
conds.Add(NewPortMatcher(*v.PortRange))
}
if v.NetworkList != nil {
conds.Add(NewNetworkMatcher(v.NetworkList))
}
if len(v.SourceCidr) > 0 {
ipv4Net := v2net.NewIPNet()
ipv6Cond := NewAnyCondition()
hasIpv6 := false
for _, ip := range v.SourceCidr {
switch len(ip.Ip) {
case net.IPv4len:
ipv4Net.AddIP(ip.Ip, byte(ip.Prefix))
case net.IPv6len:
hasIpv6 = true
matcher, err := NewCIDRMatcher(ip.Ip, ip.Prefix, true)
if err != nil {
return nil, err
}
ipv6Cond.Add(matcher)
default:
return nil, errors.New("Router: Invalid IP length.")
}
}
if !ipv4Net.IsEmpty() && hasIpv6 {
cond := NewAnyCondition()
cond.Add(NewIPv4Matcher(ipv4Net, true))
cond.Add(ipv6Cond)
conds.Add(cond)
} else if !ipv4Net.IsEmpty() {
conds.Add(NewIPv4Matcher(ipv4Net, true))
} else if hasIpv6 {
conds.Add(ipv6Cond)
}
}
if len(v.UserEmail) > 0 {
conds.Add(NewUserMatcher(v.UserEmail))
}
if len(v.InboundTag) > 0 {
conds.Add(NewInboundTagMatcher(v.InboundTag))
}
if conds.Len() == 0 {
return nil, errors.New("Router: This rule has no effective fields.")
}
return conds, nil
}
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 \"v2ray.com/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, "}")
}