chore: resolver read system hosts file

This commit is contained in:
wwqgtxx 2023-09-23 14:01:18 +08:00
parent bf619d8586
commit 0207a7ac96
2 changed files with 46 additions and 15 deletions

View file

@ -4,6 +4,7 @@ import (
"errors"
"net/netip"
"strings"
_ "unsafe"
"github.com/Dreamacro/clash/common/utils"
"github.com/Dreamacro/clash/component/trie"
@ -20,12 +21,14 @@ func NewHosts(hosts *trie.DomainTrie[HostValue]) Hosts {
}
}
// lookupStaticHost looks up the addresses and the canonical name for the given host from /etc/hosts.
//
//go:linkname lookupStaticHost net.lookupStaticHost
func lookupStaticHost(host string) ([]string, string)
// Return the search result and whether to match the parameter `isDomain`
func (h *Hosts) Search(domain string, isDomain bool) (*HostValue, bool) {
value := h.DomainTrie.Search(domain)
if value == nil {
return nil, false
}
if value := h.DomainTrie.Search(domain); value != nil {
hostValue := value.Data()
for {
if isDomain && hostValue.IsDomain {
@ -41,7 +44,16 @@ func (h *Hosts) Search(domain string, isDomain bool) (*HostValue, bool) {
if isDomain == hostValue.IsDomain {
return &hostValue, true
}
return &hostValue, false
}
if !isDomain {
addr, _ := lookupStaticHost(domain)
if hostValue, err := NewHostValue(addr); err == nil {
return &hostValue, true
}
}
return nil, false
}
type HostValue struct {

View file

@ -0,0 +1,19 @@
//go:build !go1.22
// a simple standard lib fix from: https://github.com/golang/go/commit/33d4a5105cf2b2d549922e909e9239a48b8cefcc
package resolver
import (
"golang.org/x/sys/windows"
_ "unsafe"
)
//go:linkname testHookHostsPath net.testHookHostsPath
var testHookHostsPath string
func init() {
if dir, err := windows.GetSystemDirectory(); err == nil {
testHookHostsPath = dir + "/Drivers/etc/hosts"
}
}