mirror of https://github.com/go-gitea/gitea.git
95 lines
2.4 KiB
Go
95 lines
2.4 KiB
Go
// Copyright 2021 The Gitea Authors. All rights reserved.
|
|
// Use of this source code is governed by a MIT-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package hostmatcher
|
|
|
|
import (
|
|
"net"
|
|
"path/filepath"
|
|
"strings"
|
|
|
|
"code.gitea.io/gitea/modules/util"
|
|
)
|
|
|
|
// HostMatchList is used to check if a host or IP is in a list.
|
|
// If you only need to do wildcard matching, consider to use modules/matchlist
|
|
type HostMatchList struct {
|
|
hosts []string
|
|
ipNets []*net.IPNet
|
|
}
|
|
|
|
// MatchBuiltinAll all hosts are matched
|
|
const MatchBuiltinAll = "*"
|
|
|
|
// MatchBuiltinExternal A valid non-private unicast IP, all hosts on public internet are matched
|
|
const MatchBuiltinExternal = "external"
|
|
|
|
// MatchBuiltinPrivate RFC 1918 (10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16) and RFC 4193 (FC00::/7). Also called LAN/Intranet.
|
|
const MatchBuiltinPrivate = "private"
|
|
|
|
// MatchBuiltinLoopback 127.0.0.0/8 for IPv4 and ::1/128 for IPv6, localhost is included.
|
|
const MatchBuiltinLoopback = "loopback"
|
|
|
|
// ParseHostMatchList parses the host list HostMatchList
|
|
func ParseHostMatchList(hostList string) *HostMatchList {
|
|
hl := &HostMatchList{}
|
|
for _, s := range strings.Split(hostList, ",") {
|
|
s = strings.ToLower(strings.TrimSpace(s))
|
|
if s == "" {
|
|
continue
|
|
}
|
|
_, ipNet, err := net.ParseCIDR(s)
|
|
if err == nil {
|
|
hl.ipNets = append(hl.ipNets, ipNet)
|
|
} else {
|
|
hl.hosts = append(hl.hosts, s)
|
|
}
|
|
}
|
|
return hl
|
|
}
|
|
|
|
// MatchesHostOrIP checks if the host or IP matches an allow/deny(block) list
|
|
func (hl *HostMatchList) MatchesHostOrIP(host string, ip net.IP) bool {
|
|
var matched bool
|
|
host = strings.ToLower(host)
|
|
ipStr := ip.String()
|
|
loop:
|
|
for _, hostInList := range hl.hosts {
|
|
switch hostInList {
|
|
case "":
|
|
continue
|
|
case MatchBuiltinAll:
|
|
matched = true
|
|
break loop
|
|
case MatchBuiltinExternal:
|
|
if matched = ip.IsGlobalUnicast() && !util.IsIPPrivate(ip); matched {
|
|
break loop
|
|
}
|
|
case MatchBuiltinPrivate:
|
|
if matched = util.IsIPPrivate(ip); matched {
|
|
break loop
|
|
}
|
|
case MatchBuiltinLoopback:
|
|
if matched = ip.IsLoopback(); matched {
|
|
break loop
|
|
}
|
|
default:
|
|
if matched, _ = filepath.Match(hostInList, host); matched {
|
|
break loop
|
|
}
|
|
if matched, _ = filepath.Match(hostInList, ipStr); matched {
|
|
break loop
|
|
}
|
|
}
|
|
}
|
|
if !matched {
|
|
for _, ipNet := range hl.ipNets {
|
|
if matched = ipNet.Contains(ip); matched {
|
|
break
|
|
}
|
|
}
|
|
}
|
|
return matched
|
|
}
|