From d49871224c8cde14a47ec800e82e161f162e6acd Mon Sep 17 00:00:00 2001 From: yaling888 <73897884+yaling888@users.noreply.github.com> Date: Sat, 5 Mar 2022 18:06:20 +0800 Subject: [PATCH] Fix: should only resolve local process name --- rule/process.go | 43 ++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 40 insertions(+), 3 deletions(-) diff --git a/rule/process.go b/rule/process.go index b60c46bb..e5ad07bd 100644 --- a/rule/process.go +++ b/rule/process.go @@ -2,6 +2,7 @@ package rules import ( "fmt" + "net" "strconv" "strings" @@ -11,7 +12,11 @@ import ( "github.com/Dreamacro/clash/log" ) -var processCache = cache.NewLRUCache(cache.WithAge(2), cache.WithSize(64)) +var ( + processCache = cache.NewLRUCache(cache.WithAge(2), cache.WithSize(64)) + + localIPs = getLocalIPs() +) type Process struct { adapter string @@ -28,8 +33,8 @@ func (ps *Process) Match(metadata *C.Metadata) bool { return strings.EqualFold(metadata.Process, ps.process) } - // ignore match in proxy type "tproxy" - if metadata.Type == C.TPROXY { + // ignore source IP not on local machine + if !isLocalIP(metadata.SrcIP) { return false } @@ -80,3 +85,35 @@ func NewProcess(process string, adapter string, ruleExtra *C.RuleExtra) (*Proces ruleExtra: ruleExtra, }, nil } + +func getLocalIPs() []net.IP { + ips := []net.IP{net.IPv4(198, 18, 0, 1), net.IPv4zero, net.IPv6zero} + + netInterfaces, err := net.Interfaces() + if err != nil { + return ips + } + + for i := 0; i < len(netInterfaces); i++ { + if (netInterfaces[i].Flags & net.FlagUp) != 0 { + adds, _ := netInterfaces[i].Addrs() + + for _, address := range adds { + if ipNet, ok := address.(*net.IPNet); ok { + ips = append(ips, ipNet.IP) + } + } + } + } + + return ips +} + +func isLocalIP(srcIP net.IP) bool { + for _, ip := range localIPs { + if ip.Equal(srcIP) { + return true + } + } + return false +}