diff options
Diffstat (limited to 'tunnel/tools')
-rw-r--r-- | tunnel/tools/libwg-go/.gitignore | 3 | ||||
-rw-r--r-- | tunnel/tools/libwg-go/Makefile | 27 | ||||
-rw-r--r-- | tunnel/tools/libwg-go/api-android.go | 69 | ||||
-rw-r--r-- | tunnel/tools/libwg-go/dhcp.go | 193 | ||||
-rw-r--r-- | tunnel/tools/libwg-go/go.mod | 23 | ||||
-rw-r--r-- | tunnel/tools/libwg-go/go.sum | 179 | ||||
-rw-r--r-- | tunnel/tools/libwg-go/http-proxy.go | 716 | ||||
-rw-r--r-- | tunnel/tools/libwg-go/jni.c | 32 | ||||
-rw-r--r-- | tunnel/tools/libwg-go/service.go | 316 |
9 files changed, 1539 insertions, 19 deletions
diff --git a/tunnel/tools/libwg-go/.gitignore b/tunnel/tools/libwg-go/.gitignore index d1638636..d69ee823 100644 --- a/tunnel/tools/libwg-go/.gitignore +++ b/tunnel/tools/libwg-go/.gitignore @@ -1 +1,2 @@ -build/
\ No newline at end of file +build/ +/gen/ diff --git a/tunnel/tools/libwg-go/Makefile b/tunnel/tools/libwg-go/Makefile index f1936e1d..5ae4548d 100644 --- a/tunnel/tools/libwg-go/Makefile +++ b/tunnel/tools/libwg-go/Makefile @@ -19,6 +19,7 @@ export CGO_LDFLAGS := $(CLANG_FLAGS) $(patsubst -Wl$(comma)--build-id=%,-Wl$(com export GOARCH := $(NDK_GO_ARCH_MAP_$(ANDROID_ARCH_NAME)) export GOOS := android export CGO_ENABLED := 1 +export GOPATH ?= $(HOME)/go GO_VERSION := 1.20.3 GO_PLATFORM := $(shell uname -s | tr '[:upper:]' '[:lower:]')-$(NDK_GO_ARCH_MAP_$(shell uname -m)) @@ -27,6 +28,13 @@ GO_HASH_darwin-amd64 := c1e1161d6d859deb576e6cfabeb40e3d042ceb1c6f444f617c3c9d76 GO_HASH_darwin-arm64 := 86b0ed0f2b2df50fa8036eea875d1cf2d76cefdacf247c44639a1464b7e36b95 GO_HASH_linux-amd64 := 979694c2c25c735755bf26f4f45e19e64e4811d661dd07b8c010f7a8e18adfca +PROTOC_VERSION := 3.22.4 +PROTOC_GEN_GO := $(GOPATH)/bin/protoc-gen-go +PROTOC := $(GRADLE_USER_HOME)/caches/protoc-bin-$(PROTOC_VERSION)/protoc +PROTODIR = $(CURDIR)/../../src/main/proto +PROTO_INCLUDEDIR = $(CURDIR)/../../build/extracted-include-protos/debug +PBDIR = $(GOPATH)/pkg/mod + default: $(DESTDIR)/libwg-go.so $(GRADLE_USER_HOME)/caches/golang/$(GO_TARBALL): @@ -45,8 +53,25 @@ $(BUILDDIR)/go-$(GO_VERSION)/.prepared: $(GRADLE_USER_HOME)/caches/golang/$(GO_T patch -p1 -f -N -r- -d "$(dir $@)" < goruntime-boottime-over-monotonic.diff && \ touch "$@"' +$(PROTOC_GEN_GO): export GOARCH := +$(PROTOC_GEN_GO): export GOOS := +$(PROTOC_GEN_GO): export PATH := $(BUILDDIR)/go-$(GO_VERSION)/bin/:$(PATH) +$(PROTOC_GEN_GO): $(BUILDDIR)/go-$(GO_VERSION)/.prepared Makefile + go install google.golang.org/protobuf/cmd/protoc-gen-go@v1.28 + go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@v1.2 + +gen/%.pb.go: export PATH := $(GOPATH)/bin:$(PATH) +gen/%.pb.go: $(PROTODIR)/%.proto $(BUILDDIR)/go-$(GO_VERSION)/.prepared $(PROTOC_GEN_GO) + test -d gen || mkdir gen + $(PROTOC) -I $(PROTODIR) -I $(PROTO_INCLUDEDIR) --go_out=paths=source_relative:./gen $< + +gen/%_grpc.pb.go: export PATH := $(GOPATH)/bin:$(PATH) +gen/%_grpc.pb.go: $(PROTODIR)/%.proto $(BUILDDIR)/go-$(GO_VERSION)/.prepared $(PROTOC_GEN_GO) + test -d gen || mkdir gen + $(PROTOC) -I $(PROTODIR) -I $(PROTO_INCLUDEDIR) --go-grpc_out=./gen --go-grpc_opt=paths=source_relative $< + $(DESTDIR)/libwg-go.so: export PATH := $(BUILDDIR)/go-$(GO_VERSION)/bin/:$(PATH) -$(DESTDIR)/libwg-go.so: $(BUILDDIR)/go-$(GO_VERSION)/.prepared go.mod +$(DESTDIR)/libwg-go.so: $(BUILDDIR)/go-$(GO_VERSION)/.prepared go.mod api-android.go dhcp.go http-proxy.go service.go gen/libwg.pb.go gen/libwg_grpc.pb.go jni.c go build -tags linux -ldflags="-X golang.zx2c4.com/wireguard/ipc.socketDirectory=/data/data/$(ANDROID_PACKAGE_NAME)/cache/wireguard -buildid=" -v -trimpath -buildvcs=false -o "$@" -buildmode c-shared .DELETE_ON_ERROR: diff --git a/tunnel/tools/libwg-go/api-android.go b/tunnel/tools/libwg-go/api-android.go index d47c5d76..5d9e8b96 100644 --- a/tunnel/tools/libwg-go/api-android.go +++ b/tunnel/tools/libwg-go/api-android.go @@ -48,10 +48,17 @@ func (l AndroidLogger) Printf(format string, args ...interface{}) { type TunnelHandle struct { device *device.Device uapi net.Listener + logger *device.Logger + tun *tun.NativeTun } var tunnelHandles map[int32]TunnelHandle +func GetTunnel(handle int32) (tunnelHandle TunnelHandle, ok bool) { + tunnelHandle, ok = tunnelHandles[handle] + return +} + func init() { tunnelHandles = make(map[int32]TunnelHandle) signals := make(chan os.Signal) @@ -142,10 +149,29 @@ func wgTurnOn(interfaceName string, tunFd int32, settings string) int32 { device.Close() return -1 } - tunnelHandles[i] = TunnelHandle{device: device, uapi: uapi} + tunnelHandles[i] = TunnelHandle{device: device, uapi: uapi, tun: tun} return i } +//export wgSetFd +func wgSetFd(tunnelHandle int32, tunFd int32) { + tag := cstring(fmt.Sprintf("WireGuard/GoBackend/%x", tunnelHandle)) + logger := &device.Logger{ + Verbosef: AndroidLogger{level: C.ANDROID_LOG_DEBUG, tag: tag}.Printf, + Errorf: AndroidLogger{level: C.ANDROID_LOG_ERROR, tag: tag}.Printf, + } + + handle, ok := tunnelHandles[tunnelHandle] + if !ok { + unix.Close(int(tunFd)) + logger.Errorf("Tunnel not found") + return + } + + handle.tun.SetFd(int(tunFd)) + logger.Verbosef("wgSetFd: %v", tunFd) +} + //export wgTurnOff func wgTurnOff(tunnelHandle int32) { handle, ok := tunnelHandles[tunnelHandle] @@ -208,20 +234,53 @@ func wgGetConfig(tunnelHandle int32) *C.char { //export wgVersion func wgVersion() *C.char { + return C.CString(Version()) +} + +func Version() string { info, ok := debug.ReadBuildInfo() if !ok { - return C.CString("unknown") + return "unknown" } for _, dep := range info.Deps { if dep.Path == "golang.zx2c4.com/wireguard" { parts := strings.Split(dep.Version, "-") if len(parts) == 3 && len(parts[2]) == 12 { - return C.CString(parts[2][:7]) + return parts[2][:7] } - return C.CString(dep.Version) + return dep.Version } } - return C.CString("unknown") + return "unknown" +} + +//export wgStartGrpc +func wgStartGrpc(sock_path string) C.int{ + tag := cstring("WireGuard/GoBackend/gRPC") + logger := &device.Logger{ + Verbosef: AndroidLogger{level: C.ANDROID_LOG_DEBUG, tag: tag}.Printf, + Errorf: AndroidLogger{level: C.ANDROID_LOG_ERROR, tag: tag}.Printf, + } + + res, errmsg := StartGrpc(sock_path, logger) + if res < 0 { + logger.Verbosef("wgStartGrpc: %v (%v)", errmsg, res) + } + + return C.int(res) +} + +//export wgSetConfig +func wgSetConfig(tunnelHandle int32, settings string) int32 { + handle, ok := tunnelHandles[tunnelHandle] + if !ok { + return -1 + } + err := handle.device.IpcSet(settings) + if err != nil { + return -1 + } + return 0 } func main() {} diff --git a/tunnel/tools/libwg-go/dhcp.go b/tunnel/tools/libwg-go/dhcp.go new file mode 100644 index 00000000..4af5b0cb --- /dev/null +++ b/tunnel/tools/libwg-go/dhcp.go @@ -0,0 +1,193 @@ +package main + +import ( + "context" + "net" + "net/netip" + "time" + + "github.com/insomniacslk/dhcp/dhcpv4" + "github.com/insomniacslk/dhcp/dhcpv6" + "github.com/insomniacslk/dhcp/dhcpv6/nclient6" + "github.com/insomniacslk/dhcp/iana" + + gen "golang.zx2c4.com/wireguard/android/gen" + "google.golang.org/protobuf/types/known/durationpb" +) + +const ( + ENABLE_PD = true +) + +type dhcp struct { + fqdn string + hwAddr net.HardwareAddr + conn *net.UDPConn + serverAddr net.UDPAddr + client *nclient6.Client + linkAddr net.IP + peerAddr net.IP +} + +func newClientIDOpt(duid dhcpv6.DUID) dhcpv4.Option { + iaid := []byte{0, 0, 0, 3} + ident := []byte{255} // Type IAID+DUID + ident = append(ident, iaid...) // IAID + ident = append(ident, duid.ToBytes()...) // DUID + return dhcpv4.OptClientIdentifier(ident) +} + +func getDuid(hwAddr net.HardwareAddr) dhcpv6.DUID { + duid := &dhcpv6.DUIDLLT{ + HWType: iana.HWTypeEthernet, + Time: uint32(time.Now().Unix()), + LinkLayerAddr: hwAddr, + } + + return duid +} + +func (d *dhcp) encapSendAndRead(ctx context.Context, msg *dhcpv6.Message, match nclient6.Matcher) (*dhcpv6.Message, error) { + packet, err := dhcpv6.EncapsulateRelay(msg, dhcpv6.MessageTypeRelayForward, d.linkAddr, d.peerAddr) + if err != nil { + return nil, err + } + + relay, err := d.client.SendAndReadRelay(ctx, &d.serverAddr, packet, match) + if err != nil { + return nil, err + } + + inner, err := relay.GetInnerMessage() + if err != nil { + return nil, err + } + + return inner, nil +} + +// isRelayMessageType returns a matcher that checks for the message type. +func isRelayMessageType(t dhcpv6.MessageType, tt ...dhcpv6.MessageType) nclient6.Matcher { + return func(p dhcpv6.DHCPv6) bool { + inner, err := p.GetInnerMessage() + if err != nil { + return false + } + if inner.Type() == t { + return true + } + for _, mt := range tt { + if inner.Type() == mt { + return true + } + } + return false + } +} + +// func New() *dhcp { +// } + +func RunDhcp(ctx context.Context, laddr, raddr netip.Addr) ([]*gen.Lease, error) { + d := &dhcp{} + + d.linkAddr = net.ParseIP("fe80::101") + d.peerAddr = net.ParseIP("::1") + + // TODO generate hostname and hwAddr from public key + hostName := "foobar" + d.fqdn = hostName + ".m7n.se" + d.hwAddr = []byte{41, 42, 43, 44, 45, 46} + + + src := net.UDPAddr{IP: laddr.AsSlice(), + Port: 0, // Use non-restrict UDP source port + } + + + d.serverAddr = net.UDPAddr{IP: raddr.AsSlice(), + Port: 547, + } + + err := d.Start(&src) + if err != nil { + return nil, err + } + + defer d.Close() + + reply, err := d.ObtainLease(ctx) // Use reply + if err != nil { + return nil, err + } + + return getAddressesFromReply(reply), nil +} + +func getAddressesFromReply(reply *dhcpv6.Message) []*gen.Lease{ + var leases []*gen.Lease = make([]*gen.Lease, 0, 4) + + if opt := reply.GetOneOption(dhcpv6.OptionIANA); opt != nil { + iana := opt.(*dhcpv6.OptIANA) + ianaOpts := iana.Options.Get(dhcpv6.OptionIAAddr) + + for _, opt := range ianaOpts { + addrOpt := opt.(*dhcpv6.OptIAAddress) + lease := &gen.Lease{ + Address: &gen.InetAddress{ + Address: addrOpt.IPv6Addr, + }, + PreferredLifetime: durationpb.New(addrOpt.PreferredLifetime), + ValidLifetime: durationpb.New(addrOpt.ValidLifetime), + } + leases = append(leases, lease) + } + } + + return leases +} + +func (d *dhcp) Start(localAddr *net.UDPAddr) error { + conn, err := net.ListenUDP("udp6", localAddr) + if err != nil { + return err + } + + d.client, err = nclient6.NewWithConn(conn, d.hwAddr, nclient6.WithDebugLogger()) + return err +} + +func (d *dhcp) Close() error { + err := d.client.Close() + + d.client = nil + return err +} + +func (d *dhcp) ObtainLease(ctx context.Context) (*dhcpv6.Message, error){ + duidOpt := dhcpv6.WithClientID(getDuid(d.hwAddr)) + fqdnOpt := dhcpv6.WithFQDN(0x1, d.fqdn) + + solicit, err := dhcpv6.NewSolicit(d.hwAddr, duidOpt, fqdnOpt, dhcpv6.WithRapidCommit) + if err != nil { + return nil, err + } + + msg, err := d.encapSendAndRead(ctx, solicit, isRelayMessageType(dhcpv6.MessageTypeReply, dhcpv6.MessageTypeAdvertise)) + if err != nil { + return nil, err + } + + if msg.Type() == dhcpv6.MessageTypeReply { + // We got RapidCommitted. + return msg, nil + } + + // We didn't get RapidCommitted. Request regular lease. + req, err := dhcpv6.NewRequestFromAdvertise(msg, fqdnOpt) + if err != nil { + return nil, err + } + + return d.encapSendAndRead(ctx, req, nil) +} diff --git a/tunnel/tools/libwg-go/go.mod b/tunnel/tools/libwg-go/go.mod index 9318ebcf..8f17923c 100644 --- a/tunnel/tools/libwg-go/go.mod +++ b/tunnel/tools/libwg-go/go.mod @@ -3,12 +3,27 @@ module golang.zx2c4.com/wireguard/android go 1.20 require ( - golang.org/x/sys v0.6.0 - golang.zx2c4.com/wireguard v0.0.0-20230223181233-21636207a675 + github.com/elazarl/goproxy v0.0.0-20211114080932-d06c3be7c11b + github.com/insomniacslk/dhcp v0.0.0-20221215072855-de60144f33f8 + golang.org/x/net v0.7.0 + golang.org/x/sys v0.5.1-0.20230222185716-a3b23cc77e89 + golang.zx2c4.com/wireguard v0.0.0-20220407013110-ef5c587f782d + google.golang.org/grpc v1.42.0-dev.0.20211020220737-f00baa6c3c84 + google.golang.org/protobuf v1.27.1 + gopkg.in/olebedev/go-duktape.v3 v3.0.0-20210326210528-650f7c854440 ) require ( - golang.org/x/crypto v0.7.0 // indirect - golang.org/x/net v0.8.0 // indirect + github.com/golang/protobuf v1.5.2 // indirect + github.com/josharian/native v1.1.0 // indirect + github.com/pierrec/lz4/v4 v4.1.14 // indirect + github.com/u-root/uio v0.0.0-20230220225925-ffce2a382923 // indirect + golang.org/x/crypto v0.6.0 // indirect + golang.org/x/text v0.7.0 // indirect golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2 // indirect + google.golang.org/genproto v0.0.0-20210722135532-667f2b7c528f // indirect ) + +replace github.com/insomniacslk/dhcp => /src/insomniacslk-dhcp + +replace golang.zx2c4.com/wireguard => /src/wireguard-go diff --git a/tunnel/tools/libwg-go/go.sum b/tunnel/tools/libwg-go/go.sum index 3b49b497..dfd31072 100644 --- a/tunnel/tools/libwg-go/go.sum +++ b/tunnel/tools/libwg-go/go.sum @@ -1,10 +1,173 @@ -golang.org/x/crypto v0.7.0 h1:AvwMYaRytfdeVt3u6mLaxYtErKYjxA2OXjJ1HHq6t3A= -golang.org/x/crypto v0.7.0/go.mod h1:pYwdfH91IfpZVANVyUOhSIPZaFoJGxTFbZhFTx+dXZU= -golang.org/x/net v0.8.0 h1:Zrh2ngAOFYneWTAIAPethzeaQLuHwhuBkuV6ZiRnUaQ= -golang.org/x/net v0.8.0/go.mod h1:QVkue5JL9kW//ek3r6jTKnTFis1tRmNAW2P1shuFdJc= -golang.org/x/sys v0.6.0 h1:MVltZSvRTcU2ljQOhs94SXPftV6DCNnZViHeQps87pQ= -golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= +cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= +github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY= +github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU= +github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs= +github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw= +github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc= +github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk= +github.com/cncf/udpa/go v0.0.0-20210930031921-04548b0d99d4/go.mod h1:6pvJx4me5XPnfI9Z40ddWsdw2W/uZgQLFXToKeRcDiI= +github.com/cncf/xds/go v0.0.0-20210312221358-fbca930ec8ed/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs= +github.com/cncf/xds/go v0.0.0-20210805033703-aa0b78936158/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs= +github.com/cncf/xds/go v0.0.0-20210922020428-25de7278fc84/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs= +github.com/cncf/xds/go v0.0.0-20211011173535-cb28da3451f1/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs= +github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8= +github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/elazarl/goproxy v0.0.0-20211114080932-d06c3be7c11b 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h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= +gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo= +gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= +honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= +honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= diff --git a/tunnel/tools/libwg-go/http-proxy.go b/tunnel/tools/libwg-go/http-proxy.go new file mode 100644 index 00000000..9c457286 --- /dev/null +++ b/tunnel/tools/libwg-go/http-proxy.go @@ -0,0 +1,716 @@ +package main + +import ( + "fmt" + "io" + "net" + "net/http" + "net/netip" + "net/url" + "strings" + "sync" + + "github.com/elazarl/goproxy" + + "golang.zx2c4.com/wireguard/device" + + net_proxy "golang.org/x/net/proxy" + + "gopkg.in/olebedev/go-duktape.v3" +) + +const ( + // Imported from Firefox' ProxyAutoConfig.cpp + // https://searchfox.org/mozilla-central/source/netwerk/base/ProxyAutoConfig.cpp + // This Source Code Form is subject to the terms of the Mozilla Public + // License, v. 2.0. If a copy of the MPL was not distributed with this + // file, You can obtain one at http://mozilla.org/MPL/2.0/. + ASCII_PAC_UTILS = "function dnsDomainIs(host, domain) {\n" + + " return (host.length >= domain.length &&\n" + + " host.substring(host.length - domain.length) == domain);\n" + + "}\n" + + "" + + "function dnsDomainLevels(host) {\n" + + " return host.split('.').length - 1;\n" + + "}\n" + + "" + + "function isValidIpAddress(ipchars) {\n" + + " var matches = " + + "/^(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})$/.exec(ipchars);\n" + + " if (matches == null) {\n" + + " return false;\n" + + " } else if (matches[1] > 255 || matches[2] > 255 || \n" + + " matches[3] > 255 || matches[4] > 255) {\n" + + " return false;\n" + + " }\n" + + " return true;\n" + + "}\n" + + "" + + "function convert_addr(ipchars) {\n" + + " var bytes = ipchars.split('.');\n" + + " var result = ((bytes[0] & 0xff) << 24) |\n" + + " ((bytes[1] & 0xff) << 16) |\n" + + " ((bytes[2] & 0xff) << 8) |\n" + + " (bytes[3] & 0xff);\n" + + " return result;\n" + + "}\n" + + "" + + "function isInNet(ipaddr, pattern, maskstr) {\n" + + " if (!isValidIpAddress(pattern) || !isValidIpAddress(maskstr)) {\n" + + " return false;\n" + + " }\n" + + " if (!isValidIpAddress(ipaddr)) {\n" + + " ipaddr = dnsResolve(ipaddr);\n" + + " if (ipaddr == null) {\n" + + " return false;\n" + + " }\n" + + " }\n" + + " var host = convert_addr(ipaddr);\n" + + " var pat = convert_addr(pattern);\n" + + " var mask = convert_addr(maskstr);\n" + + " return ((host & mask) == (pat & mask));\n" + + " \n" + + "}\n" + + "" + + "function isPlainHostName(host) {\n" + + " return (host.search('(\\\\.)|:') == -1);\n" + + "}\n" + + "" + + "function isResolvable(host) {\n" + + " var ip = dnsResolve(host);\n" + + " return (ip != null);\n" + + "}\n" + + "" + + "function localHostOrDomainIs(host, hostdom) {\n" + + " return (host == hostdom) ||\n" + + " (hostdom.lastIndexOf(host + '.', 0) == 0);\n" + + "}\n" + + "" + + "function shExpMatch(url, pattern) {\n" + + " pattern = pattern.replace(/\\./g, '\\\\.');\n" + + " pattern = pattern.replace(/\\*/g, '.*');\n" + + " pattern = pattern.replace(/\\?/g, '.');\n" + + " var newRe = new RegExp('^'+pattern+'$');\n" + + " return newRe.test(url);\n" + + "}\n" + + "" + + "var wdays = {SUN: 0, MON: 1, TUE: 2, WED: 3, THU: 4, FRI: 5, SAT: 6};\n" + + "var months = {JAN: 0, FEB: 1, MAR: 2, APR: 3, MAY: 4, JUN: 5, JUL: 6, " + + "AUG: 7, SEP: 8, OCT: 9, NOV: 10, DEC: 11};\n" + + "" + + "function weekdayRange() {\n" + + " function getDay(weekday) {\n" + + " if (weekday in wdays) {\n" + + " return wdays[weekday];\n" + + " }\n" + + " return -1;\n" + + " }\n" + + " var date = new Date();\n" + + " var argc = arguments.length;\n" + + " var wday;\n" + + " if (argc < 1)\n" + + " return false;\n" + + " if (arguments[argc - 1] == 'GMT') {\n" + + " argc--;\n" + + " wday = date.getUTCDay();\n" + + " } else {\n" + + " wday = date.getDay();\n" + + " }\n" + + " var wd1 = getDay(arguments[0]);\n" + + " var wd2 = (argc == 2) ? getDay(arguments[1]) : wd1;\n" + + " return (wd1 == -1 || wd2 == -1) ? false\n" + + " : (wd1 <= wd2) ? (wd1 <= wday && wday " + + "<= wd2)\n" + + " : (wd2 >= wday || wday " + + ">= wd1);\n" + + "}\n" + + "" + + "function dateRange() {\n" + + " function getMonth(name) {\n" + + " if (name in months) {\n" + + " return months[name];\n" + + " }\n" + + " return -1;\n" + + " }\n" + + " var date = new Date();\n" + + " var argc = arguments.length;\n" + + " if (argc < 1) {\n" + + " return false;\n" + + " }\n" + + " var isGMT = (arguments[argc - 1] == 'GMT');\n" + + "\n" + + " if (isGMT) {\n" + + " argc--;\n" + + " }\n" + + " // function will work even without explict handling of this case\n" + + " if (argc == 1) {\n" + + " var tmp = parseInt(arguments[0]);\n" + + " if (isNaN(tmp)) {\n" + + " return ((isGMT ? date.getUTCMonth() : date.getMonth()) ==\n" + + " getMonth(arguments[0]));\n" + + " } else if (tmp < 32) {\n" + + " return ((isGMT ? date.getUTCDate() : date.getDate()) == " + + "tmp);\n" + + " } else { \n" + + " return ((isGMT ? date.getUTCFullYear() : date.getFullYear()) " + + "==\n" + + " tmp);\n" + + " }\n" + + " }\n" + + " var year = date.getFullYear();\n" + + " var date1, date2;\n" + + " date1 = new Date(year, 0, 1, 0, 0, 0);\n" + + " date2 = new Date(year, 11, 31, 23, 59, 59);\n" + + " var adjustMonth = false;\n" + + " for (var i = 0; i < (argc >> 1); i++) {\n" + + " var tmp = parseInt(arguments[i]);\n" + + " if (isNaN(tmp)) {\n" + + " var mon = getMonth(arguments[i]);\n" + + " date1.setMonth(mon);\n" + + " } else if (tmp < 32) {\n" + + " adjustMonth = (argc <= 2);\n" + + " date1.setDate(tmp);\n" + + " } else {\n" + + " date1.setFullYear(tmp);\n" + + " }\n" + + " }\n" + + " for (var i = (argc >> 1); i < argc; i++) {\n" + + " var tmp = parseInt(arguments[i]);\n" + + " if (isNaN(tmp)) {\n" + + " var mon = getMonth(arguments[i]);\n" + + " date2.setMonth(mon);\n" + + " } else if (tmp < 32) {\n" + + " date2.setDate(tmp);\n" + + " } else {\n" + + " date2.setFullYear(tmp);\n" + + " }\n" + + " }\n" + + " if (adjustMonth) {\n" + + " date1.setMonth(date.getMonth());\n" + + " date2.setMonth(date.getMonth());\n" + + " }\n" + + " if (isGMT) {\n" + + " var tmp = date;\n" + + " tmp.setFullYear(date.getUTCFullYear());\n" + + " tmp.setMonth(date.getUTCMonth());\n" + + " tmp.setDate(date.getUTCDate());\n" + + " tmp.setHours(date.getUTCHours());\n" + + " tmp.setMinutes(date.getUTCMinutes());\n" + + " tmp.setSeconds(date.getUTCSeconds());\n" + + " date = tmp;\n" + + " }\n" + + " return (date1 <= date2) ? (date1 <= date) && (date <= date2)\n" + + " : (date2 >= date) || (date >= date1);\n" + + "}\n" + + "" + + "function timeRange() {\n" + + " var argc = arguments.length;\n" + + " var date = new Date();\n" + + " var isGMT= false;\n" + + "" + + " if (argc < 1) {\n" + + " return false;\n" + + " }\n" + + " if (arguments[argc - 1] == 'GMT') {\n" + + " isGMT = true;\n" + + " argc--;\n" + + " }\n" + + "\n" + + " var hour = isGMT ? date.getUTCHours() : date.getHours();\n" + + " var date1, date2;\n" + + " date1 = new Date();\n" + + " date2 = new Date();\n" + + "\n" + + " if (argc == 1) {\n" + + " return (hour == arguments[0]);\n" + + " } else if (argc == 2) {\n" + + " return ((arguments[0] <= hour) && (hour <= arguments[1]));\n" + + " } else {\n" + + " switch (argc) {\n" + + " case 6:\n" + + " date1.setSeconds(arguments[2]);\n" + + " date2.setSeconds(arguments[5]);\n" + + " case 4:\n" + + " var middle = argc >> 1;\n" + + " date1.setHours(arguments[0]);\n" + + " date1.setMinutes(arguments[1]);\n" + + " date2.setHours(arguments[middle]);\n" + + " date2.setMinutes(arguments[middle + 1]);\n" + + " if (middle == 2) {\n" + + " date2.setSeconds(59);\n" + + " }\n" + + " break;\n" + + " default:\n" + + " throw 'timeRange: bad number of arguments'\n" + + " }\n" + + " }\n" + + "\n" + + " if (isGMT) {\n" + + " date.setFullYear(date.getUTCFullYear());\n" + + " date.setMonth(date.getUTCMonth());\n" + + " date.setDate(date.getUTCDate());\n" + + " date.setHours(date.getUTCHours());\n" + + " date.setMinutes(date.getUTCMinutes());\n" + + " date.setSeconds(date.getUTCSeconds());\n" + + " }\n" + + " return (date1 <= date2) ? (date1 <= date) && (date <= date2)\n" + + " : (date2 >= date) || (date >= date1);\n" + + "\n" + + "}\n" +) + +type HttpProxy struct { + listener net.Listener + tlsListener net.Listener + logger *device.Logger + addrPort netip.AddrPort + tlsAddrPort netip.AddrPort + ctx *duktape.Context + defaultProxy *goproxy.ProxyHttpServer + uidRequest chan UidRequest + handlers []*HttpHandler +} + +func NewHttpProxy(uidRequest chan UidRequest, logger *device.Logger) *HttpProxy { + logger.Verbosef("NewHttpProxy") + return &HttpProxy{ + listener: nil, + logger: logger, + uidRequest: uidRequest, + handlers: make([]*HttpHandler, 0, 2), + } +} + +var ( + ASCII_PAC_UTILS_NAMES = []string{"dnsDomainIs", "dnsDomainLevels", "isValidIpAddress", "convert_addr", "isInNet", "isPlainHostName", "isResolvable", "localHostOrDomainIs", "shExpMatch", "weekdayRange", "dateRange", "timeRange"} +) + +func (p *HttpProxy) GetAddrPort() netip.AddrPort { + return p.addrPort +} + +type Logger struct { + logger *device.Logger +} + +func (l *Logger) Printf(format string, v ...interface{}) { + l.logger.Verbosef(format, v...) +} + +func (p *HttpProxy) newGoProxy(cat, proxyUrl string) (*goproxy.ProxyHttpServer, error) { + proxy := goproxy.NewProxyHttpServer() + proxy.Logger = &Logger{logger: p.logger} + proxy.Verbose = true + if cat == "SOCKS5" { + socksDialer, err := net_proxy.SOCKS5("tcp", proxyUrl, nil, nil) + if err != nil { + return nil, err + } + proxy.Tr.Dial = socksDialer.Dial + } + proxy.NonproxyHandler = http.HandlerFunc(func (w http.ResponseWriter, req *http.Request) { + if req.Host == "" { + fmt.Fprintln(w, "Cannot handle requests without Host header, e.g., HTTP 1.0") + return + } + req.URL.Scheme = "http" + req.URL.Host = req.Host + proxy.ServeHTTP(w, req) + }) + + if cat == "PROXY" { + proxy.Tr.Proxy = func(req *http.Request) (*url.URL, error) { + return url.Parse(proxyUrl) + } + proxy.ConnectDial = proxy.NewConnectDialToProxy(proxyUrl) + } + + return proxy, nil +} + +func FindProxyForURL(ctx *duktape.Context, url, host string, logger *device.Logger) (res string, err error) { + if !ctx.GetGlobalString("FindProxyForURL") { + ctx.Pop() + return "", fmt.Errorf("FindProxyForURL not found") + } + + ctx.PushString(url) + ctx.PushString(host) + + res = "DIRECT" + logger.Verbosef("Before pcall") + r := ctx.Pcall(2) + logger.Verbosef("After pcall") + if r == 0 { + res = ctx.GetString(-1) + } else if ctx.IsError(-1) { + ctx.GetPropString(-1, "stack") + err = fmt.Errorf("Error: %v", ctx.SafeToString(-1)) + } else { + err = fmt.Errorf("Error: %v", ctx.SafeToString(-1)) + } + ctx.Pop() + return +} + + +func FindProxyForPkg(ctx *duktape.Context, pkg string, logger *device.Logger) (res string, err error) { + if !ctx.GetGlobalString("FindProxyForPkg") { + ctx.Pop() + return "", fmt.Errorf("FindProxyForPkg not found") + } + + ctx.PushString(pkg) + + res = "DIRECT" + logger.Verbosef("Before pcall") + r := ctx.Pcall(1) + logger.Verbosef("After pcall") + if r == 0 { + res = ctx.GetString(-1) + } else if ctx.IsError(-1) { + ctx.GetPropString(-1, "stack") + err = fmt.Errorf("Error: %v", ctx.SafeToString(-1)) + } else { + err = fmt.Errorf("Error: %v", ctx.SafeToString(-1)) + } + ctx.Pop() + return +} + +func newPacBodyCtx(body string, logger *device.Logger) *duktape.Context { + ctx := duktape.New() + ctx.PushGlobalGoFunction("dnsResolve", + func(ctx *duktape.Context) int { + // Check stack + host := ctx.GetString(-1) + ctx.Pop() + ips, err := net.LookupIP(host) + if err != nil { + return 0 + } + + for _, ip := range(ips) { + ipStr := string(ip) + if strings.Contains(ipStr, ".") { + // Found IPv4 + ctx.PushString(ipStr) + return 1 + } + } + // No IPv4 + return 0 + }) + + ctx.PevalString(ASCII_PAC_UTILS) + logger.Verbosef("ASCII_PAC_UTILS result is: %v stack:%v", ctx.GetType(-1), ctx.GetTop()) + ctx.Pop() + + ctx.PevalString(string(body)) + logger.Verbosef("result is: %v stack:%v", ctx.GetType(-1), ctx.GetTop()) + ctx.Pop() + FindProxyForURL(ctx, "http://www.jabra.se/", "www.jabra.se", logger) + return ctx +} + +func (p *HttpProxy) newPacFileCtx(pacFileUrl *url.URL) (*duktape.Context, error) { + var pacFileBody = "" + if pacFileUrl == nil { + return nil, nil + } + + resp, err := http.Get(pacFileUrl.String()) + p.logger.Verbosef("pacFile: %v, %v", resp, err) + + if err == nil { + defer resp.Body.Close() + ct, ok := resp.Header["Content-Type"] + if ok && len(ct) == 1 && ct[0] == "application/x-ns-proxy-autoconfig" { + body, err := io.ReadAll(resp.Body) + if err == nil { + pacFileBody = string(body) + return newPacBodyCtx(pacFileBody, p.logger), nil + } + } + } + + return nil, err +} + +func (p *HttpProxy) SetPacFileUrl(pacFileUrl *url.URL) error { + ctx, err := p.newPacFileCtx(pacFileUrl) + if err != nil { + return err + } + + for _, handler := range(p.handlers) { + handler.setPacCtx(ctx) + } + + if p.ctx != nil { + p.ctx.Destroy() + } + p.ctx = ctx + return nil +} + +func (p *HttpProxy) SetPacFileContent(pacFile string) error { + ctx := newPacBodyCtx(pacFile, p.logger) + + for _, handler := range(p.handlers) { + handler.setPacCtx(ctx) + } + + if p.ctx != nil { + p.ctx.Destroy() + } + p.ctx = ctx + return nil +} + +func (p *HttpProxy) Start() (listen_port uint16, err error) { + p.logger.Verbosef("HttpProxy.Start()") + listen_port = 0 + + + proxyMap := make(map[string]*goproxy.ProxyHttpServer) + + p.defaultProxy, err = p.newGoProxy("", "") + if err != nil { + return + } + proxyMap[""] = p.defaultProxy + + listen_port, handler, err := p.startRegularProxy(proxyMap) + if err != nil { + return + } + p.handlers = append(p.handlers, handler) + + return +} + +func (p *HttpProxy) startRegularProxy(proxyMap map[string]*goproxy.ProxyHttpServer) (listen_port uint16, handler *HttpHandler, err error) { + p.listener, err = net.Listen("tcp", "[::]:") + if err != nil { + return + } + + p.addrPort, err = netip.ParseAddrPort(p.listener.Addr().String()) + if err != nil { + return + } + + listen_port = p.addrPort.Port() + + handler = NewHttpHandler(p, p.defaultProxy, proxyMap, p.logger) + + go http.Serve(NewListener(p.listener, handler, p.logger), handler) + return +} + +func (p *HttpProxy) Stop() { + if p.listener != nil { + p.logger.Verbosef("Close: %v", p.listener) + p.listener.Close() +// p.listener = nil + } + if p.tlsListener != nil { + p.logger.Verbosef("Close: %v", p.tlsListener) + p.tlsListener.Close() +// p.tlsListener = nil + } + if p.ctx != nil { + p.ctx.DestroyHeap() + p.ctx = nil + } +} + +type HttpHandler struct { + p *HttpProxy + defaultProxy *goproxy.ProxyHttpServer + logger *device.Logger + remoteAddrPkgMapMutex sync.RWMutex + remoteAddrPkgMap map[string]*goproxy.ProxyHttpServer + uidRequest chan UidRequest + ctx *duktape.Context + proxyMap map[string]*goproxy.ProxyHttpServer // FIXME include type in map key +} + +func NewHttpHandler(p *HttpProxy, defaultProxy *goproxy.ProxyHttpServer, proxyMap map[string]*goproxy.ProxyHttpServer, logger *device.Logger) *HttpHandler{ + h := &HttpHandler{ + p: p, + defaultProxy: defaultProxy, + logger: logger, + remoteAddrPkgMapMutex: sync.RWMutex{}, + remoteAddrPkgMap: make(map[string]*goproxy.ProxyHttpServer), + uidRequest: p.uidRequest, + proxyMap: proxyMap, + } + + return h +} + +// TODO fix multi-threading +func (h *HttpHandler) setPacCtx(ctx *duktape.Context) { + h.ctx = ctx +} + +func (h *HttpHandler) addConnToProxyMap(c net.Conn) error { + h.logger.Verbosef("Accept: %v -> %v", c.RemoteAddr().String(), c.LocalAddr().String()) + local, err := netip.ParseAddrPort(c.RemoteAddr().String()) + if err != nil { + return fmt.Errorf("Bad local address (%v): %v", c.RemoteAddr(), err) + } + // Remove IPv6 zone, NOOP on IPv4 + local = netip.AddrPortFrom(local.Addr().WithZone(""), local.Port()) + + remote, err := netip.ParseAddrPort(c.LocalAddr().String()) + if err != nil { + return fmt.Errorf("Bad remote address (%v): %v", c.LocalAddr(), err) + } + + h.logger.Verbosef("uidRequest: %v -> %v", local, remote) + addrPortPair := AddrPortPair{local: local, remote: remote} + retCh := make(chan string) + h.uidRequest <- UidRequest{Data: addrPortPair, RetCh: retCh} + + select { + case pkg := <-retCh: + h.logger.Verbosef("uidResponse: '%v'", pkg) + + proxy, ok := h.proxyMap[pkg] + if !ok { + proxy, err = h.findProxyForPkg(pkg) + if err != nil { + return err + } + } + + if proxy != nil { + h.remoteAddrPkgMapMutex.Lock() + h.remoteAddrPkgMap[c.RemoteAddr().String()] = proxy + h.remoteAddrPkgMapMutex.Unlock() + } + } + + return nil +} + +func (h *HttpHandler) ServeHTTP(rw http.ResponseWriter, req *http.Request) { + h.remoteAddrPkgMapMutex.Lock() + proxy, ok := h.remoteAddrPkgMap[req.RemoteAddr] + if ok && proxy != nil { + delete(h.remoteAddrPkgMap, req.RemoteAddr) + h.remoteAddrPkgMapMutex.Unlock() + + proxyStr := "nil" + proxyUrl, err := proxy.Tr.Proxy(req) + if err == nil && proxyUrl != nil { + proxyStr = proxyUrl.String() + } + h.logger.Verbosef("ServeHTTP remote:%s proxy:%v", req.RemoteAddr, proxyStr) + + proxy.ServeHTTP(rw, req) + } else { + h.remoteAddrPkgMapMutex.Unlock() + h.defaultProxy.ServeHTTP(rw, req) + } +} + +func (h *HttpHandler) findProxyForPkg(pkg string) (*goproxy.ProxyHttpServer, error) { + if h.ctx == nil { + return nil, fmt.Errorf("Null context") + } + + find := func() (cat string, res string, err error) { + h.logger.Verbosef("Call FindProxyForPkg %v %v", pkg) + res, err = FindProxyForPkg(h.ctx, pkg, h.logger) + h.logger.Verbosef("FindProxyForPkg res %v %v", res, err) + if err != nil { + h.logger.Verbosef("FindProxyForPkg result is: %v stack:%v", res, h.ctx.GetTop()) + return "", "", err + } else if res == "" { + return "DIRECT", "", nil + } else { + values := strings.Split(strings.Trim(res, " "), ";") + for _, v := range values { + value := strings.Trim(v, " ") + parts := strings.SplitN(value, " ", 2) + if parts[0] == "PROXY" || parts[0] == "HTTP" { + return "PROXY", "http://" + parts[1], nil + } else if parts[0] == "HTTPS" { + return "PROXY", "https://" + parts[1], nil + } else if parts[0] == "DIRECT" { + return parts[0], "", nil + } else if parts[0] == "SOCKS" || parts[0] == "SOCKS5" { + return "SOCKS5", parts[1], nil + } + } + } + return "", "", fmt.Errorf("No result") + } + cat, res, err := find() + if err != nil { + return nil, err + } + + var proxy *goproxy.ProxyHttpServer + if cat == "DIRECT" { + proxy = h.defaultProxy + } else { + proxy, err = h.p.newGoProxy(cat, res) + if err != nil { + return nil, err + } + } + h.proxyMap[pkg] = proxy + + return proxy, nil +} + +type AddrPortPair struct { + local netip.AddrPort + remote netip.AddrPort +} + +// Listener +type Listener struct { + l net.Listener + handler *HttpHandler + logger *device.Logger +} + +func NewListener(listener net.Listener, handler *HttpHandler, logger *device.Logger) *Listener{ + l := &Listener{ + l: listener, + handler: handler, + logger: logger, + } + + return l +} + +func (l *Listener) Accept() (net.Conn, error) { + c, err := l.l.Accept() + if err != nil { + l.logger.Verbosef("Accept failed: %v", err) + return c, err + } + + if err := l.handler.addConnToProxyMap(c); err != nil { + err = fmt.Errorf("Reject connection (%v): %v", c, err) + c.Close() + return nil, err + } + + return c, nil +} + +func (l *Listener) Close() error { + return l.l.Close() +} + +func (l *Listener) Addr() net.Addr { + return l.l.Addr() +} diff --git a/tunnel/tools/libwg-go/jni.c b/tunnel/tools/libwg-go/jni.c index 7ad94d35..443848e8 100644 --- a/tunnel/tools/libwg-go/jni.c +++ b/tunnel/tools/libwg-go/jni.c @@ -14,6 +14,9 @@ extern int wgGetSocketV4(int handle); extern int wgGetSocketV6(int handle); extern char *wgGetConfig(int handle); extern char *wgVersion(); +extern int wgSetConfig(int handle, struct go_string settings); +extern int wgStartGrpc(); +extern int wgSetFd(int handle, int tun_fd); JNIEXPORT jint JNICALL Java_com_wireguard_android_backend_GoBackend_wgTurnOn(JNIEnv *env, jclass c, jstring ifname, jint tun_fd, jstring settings) { @@ -69,3 +72,32 @@ JNIEXPORT jstring JNICALL Java_com_wireguard_android_backend_GoBackend_wgVersion free(version); return ret; } + +JNIEXPORT jint JNICALL Java_com_wireguard_android_backend_GoBackend_wgSetConfig(JNIEnv *env, jclass c, jint handle, jstring settings) +{ + const char *settings_str = (*env)->GetStringUTFChars(env, settings, 0); + size_t settings_len = (*env)->GetStringUTFLength(env, settings); + int ret = wgSetConfig(handle, (struct go_string){ + .str = settings_str, + .n = settings_len + }); + (*env)->ReleaseStringUTFChars(env, settings, settings_str); + return ret; +} + +JNIEXPORT jint JNICALL Java_com_wireguard_android_backend_GoBackend_wgStartGrpc(JNIEnv *env, jclass c, jstring sockname) +{ + const char *sockname_str = (*env)->GetStringUTFChars(env, sockname, 0); + size_t sockname_len = (*env)->GetStringUTFLength(env, sockname); + jint res = wgStartGrpc((struct go_string){ + .str = sockname_str, + .n = sockname_len + }); + (*env)->ReleaseStringUTFChars(env, sockname, sockname_str); + return res; +} + +JNIEXPORT void JNICALL Java_com_wireguard_android_backend_GoBackend_wgSetFd(JNIEnv *env, jclass c, jint handle, jint tun_fd) +{ + wgSetFd(handle, tun_fd); +} diff --git a/tunnel/tools/libwg-go/service.go b/tunnel/tools/libwg-go/service.go new file mode 100644 index 00000000..f5460486 --- /dev/null +++ b/tunnel/tools/libwg-go/service.go @@ -0,0 +1,316 @@ +package main + +import ( + "context" + "fmt" + "io" + "net" + "net/netip" + "net/url" + "os" + + "google.golang.org/grpc" + "google.golang.org/grpc/codes" + "google.golang.org/grpc/status" + + gen "golang.zx2c4.com/wireguard/android/gen" + "golang.zx2c4.com/wireguard/device" +) + +const ( + IPPROTO_TCP = 6 +) + +type UidRequest struct { + Data AddrPortPair + RetCh chan string +} + +type LibwgServiceImpl struct { + gen.UnimplementedLibwgServer + logger *device.Logger + httpProxy *HttpProxy + uidRequest chan UidRequest + stopReverse chan bool +} + +var service *LibwgServiceImpl +var server *grpc.Server + +func NewLibwgService(logger *device.Logger) gen.LibwgServer { + return &LibwgServiceImpl{ + logger: logger, + uidRequest: make(chan UidRequest), + stopReverse: make(chan bool), + } +} + +func StartGrpc(sock_path string, logger *device.Logger) (int, string) { + if server != nil { + return -1, "Already started" + } + + if _, err := os.Stat(sock_path); err == nil { + if err := os.RemoveAll(sock_path); err != nil { + return -1, fmt.Sprintf("Cleanup failed: %v %v", sock_path, err) + } + } + + listener, err := net.Listen("unix", sock_path) + if err != nil { + return -1, fmt.Sprintf("Listen failed: %v %v", sock_path, err) + } + + server = grpc.NewServer() + service = NewLibwgService(logger).(*LibwgServiceImpl) + + gen.RegisterLibwgServer(server, service) + + go func() { + server.Serve(listener) + }() + + logger.Verbosef("gRPC started") + + return 0, "" +} + +func (e *LibwgServiceImpl) Version(ctx context.Context, req *gen.VersionRequest) (*gen.VersionResponse, error) { + + r := &gen.VersionResponse{ + Version: Version(), + } + + return r, nil +} + +func (e *LibwgServiceImpl) StopGrpc(ctx context.Context, req *gen.StopGrpcRequest) (*gen.StopGrpcResponse, error) { + if server != nil { + server.Stop() + server = nil + service = nil + } + + r := &gen.StopGrpcResponse{ + } + + return r, nil +} + +func buildStartHttpProxyError(message string) (*gen.StartHttpProxyResponse, error) { + r := &gen.StartHttpProxyResponse{ + Error: &gen.Error{ + Message: message, + }, + } + return r, nil +} + +func (e *LibwgServiceImpl) StartHttpProxy(ctx context.Context, req *gen.StartHttpProxyRequest) (*gen.StartHttpProxyResponse, error) { + var listenPort uint16 + if e.httpProxy == nil { + e.httpProxy = NewHttpProxy(e.uidRequest, e.logger) + var err error + listenPort, err = e.httpProxy.Start() + + if err != nil { + e.httpProxy = nil + return buildStartHttpProxyError(fmt.Sprintf("Http proxy start failed: %v", err)) + } + } else { + listenPort = e.httpProxy.GetAddrPort().Port() + } + + content := req.GetPacFileContent() + if content != "" { + err := e.httpProxy.SetPacFileContent(content) + if err != nil { + return buildStartHttpProxyError(fmt.Sprintf("Bad pacFileContent: %v (%s)", content)) + } + } else { + pacFileUrl, err := url.Parse(req.GetPacFileUrl()) + if err != nil { + return buildStartHttpProxyError(fmt.Sprintf("Bad pacFileUrl: %v (%s)", err, req.GetPacFileUrl())) + } + err = e.httpProxy.SetPacFileUrl(pacFileUrl) + if err != nil { + return buildStartHttpProxyError(fmt.Sprintf("Bad pacFileUrl: %v (%s)", err, pacFileUrl)) + } + } + + r := &gen.StartHttpProxyResponse{ + ListenPort: uint32(listenPort), + } + return r, nil +} + +func (e *LibwgServiceImpl) StopHttpProxy(ctx context.Context, req *gen.StopHttpProxyRequest) (*gen.StopHttpProxyResponse, error) { + if e.httpProxy == nil { + r := &gen.StopHttpProxyResponse{ + Error: &gen.Error{ + Message: fmt.Sprintf("Http proxy not running"), + }, + } + return r, nil + } + + e.httpProxy.Stop() + e.httpProxy = nil + e.stopReverse <- true + r := &gen.StopHttpProxyResponse{} + return r, nil +} + +func (e *LibwgServiceImpl) Reverse(stream gen.Libwg_ReverseServer) error { + e.logger.Verbosef("Reverse enter loop") + for e.httpProxy != nil { + var err error + + // err := contextError(stream.Context()) + err = stream.Context().Err() + if err != nil { + e.logger.Verbosef("Reverse: context: %v", err) + return err + } + + select { + case <-e.stopReverse: + e.logger.Verbosef("Reverse: stop") + break + case uidReq := <-e.uidRequest: + addrPortPair := uidReq.Data + local := addrPortPair.local + remote := addrPortPair.remote + r := &gen.ReverseResponse{ + Request: &gen.ReverseResponse_Uid{ + Uid: &gen.GetConnectionOwnerUidRequest{ + Protocol: IPPROTO_TCP, + Local: &gen.InetSocketAddress{ + Address: &gen.InetAddress{ + Address: local.Addr().AsSlice(), + }, + Port: uint32(local.Port()), + }, + Remote: &gen.InetSocketAddress{ + Address: &gen.InetAddress{ + Address: remote.Addr().AsSlice(), + }, + Port: uint32(remote.Port()), + }, + }, + }, + } + + stream.Send(r) + + req, err := stream.Recv() + if err == io.EOF { + e.logger.Verbosef("no more data") + uidReq.RetCh <- "" + break + } + if err != nil { + err = status.Errorf(codes.Unknown, "cannot receive stream request: %v", err) + e.logger.Verbosef("Reverse: %v", err) + uidReq.RetCh <- "" + return err + } + + e.logger.Verbosef("Reverse: received, wait: %v", req) + uidReq.RetCh <- req.GetUid().GetPackage() + } + } + + + e.logger.Verbosef("Reverse returns") + return nil +} + +func (e *LibwgServiceImpl) IpcSet(ctx context.Context, req *gen.IpcSetRequest) (*gen.IpcSetResponse, error) { + tunnel, ok := GetTunnel(req.GetTunnel().GetHandle()) + if !ok { + r := &gen.IpcSetResponse{ + Error: &gen.Error{ + Message: fmt.Sprintf("Invalid tunnel"), + }, + } + return r, nil + } + + err := tunnel.device.IpcSet(req.GetConfig()) + if err != nil { + r := &gen.IpcSetResponse{ + Error: &gen.Error{ + Message: fmt.Sprintf("IpcSet failed: %v", err), + }, + } + return r, nil + } + + r := &gen.IpcSetResponse{ + } + + return r, nil +} + +func (e *LibwgServiceImpl) Dhcp(ctx context.Context, req *gen.DhcpRequest) (*gen.DhcpResponse, error) { + var relayAddr netip.Addr + var sourceAddr netip.Addr + + source := req.GetSource() + if source != nil { + sourceAddr, _ = netip.AddrFromSlice(source.GetAddress()) + } + + if !sourceAddr.IsValid() || !sourceAddr.Is6() { + r := &gen.DhcpResponse{ + Error: &gen.Error{ + Message: fmt.Sprintf("DHCPv6 source address missing"), + }, + } + return r, nil + } + + relay := req.GetRelay() + if relay != nil { + relayAddr, _ = netip.AddrFromSlice(relay.GetAddress()) + } else { + // Construct relay address from source prefix + relayRaw := source.GetAddress()[:8] + relayRaw = append(relayRaw, 0) + relayRaw = append(relayRaw, 0) + relayRaw = append(relayRaw, 0) + relayRaw = append(relayRaw, 0) + relayRaw = append(relayRaw, 0) + relayRaw = append(relayRaw, 0) + relayRaw = append(relayRaw, 0) + relayRaw = append(relayRaw, 1) + relayAddr, _ = netip.AddrFromSlice(relayRaw) + } + + if !relayAddr.IsValid() || !relayAddr.Is6() { + r := &gen.DhcpResponse{ + Error: &gen.Error{ + Message: fmt.Sprintf("DHCPv6 relay address calculation failed"), + }, + } + return r, nil + } + + e.logger.Verbosef("RunDhcp %v %v", sourceAddr, relayAddr) + + leases, err := RunDhcp(ctx, sourceAddr, relayAddr) + if err != nil { + r := &gen.DhcpResponse{ + Error: &gen.Error{ + Message: fmt.Sprintf("RunDhcp failed: %v", err), + }, + } + return r, nil + } + + r := &gen.DhcpResponse{ + Leases: leases, + } + return r, nil +} |