Add support for PROXY protocol v2 in TCP listener (#13540)
* Add support for PROXY protocol v2 in TCP listener I did not find tests for this so I added one trying to cover different configurations to make sure I did not break something. As far as I know, the behavior should be exactly the same as before except for one thing when proxy_protocol_behavior is set to "deny_unauthorized", unauthorized requests were previously silently reject because of https://github.com/armon/go-proxyproto/blob/7e956b284f0a/protocol.go#L81-L84 but it will now be logged. Also fixes https://github.com/hashicorp/vault/issues/9462 by adding support for `PROXY UNKNOWN` for PROXY protocol v1. Closes https://github.com/hashicorp/vault/issues/3807 * Add changelog
This commit is contained in:
Rémi Lapeyre
GitHub
parent
baafd9ff38
commit
e89bbd51d9
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@ -0,0 +1,4 @@
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```release-note:improvement
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core: Vault now supports the PROXY protocol v2. Support for UNKNOWN connections
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has also been added to the PROXY protocol v1.
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```
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@ -11,8 +11,10 @@ import (
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"testing"
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"time"
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"github.com/hashicorp/go-sockaddr"
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"github.com/hashicorp/vault/internalshared/configutil"
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"github.com/mitchellh/cli"
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"github.com/pires/go-proxyproto"
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)
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func TestTCPListener(t *testing.T) {
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@ -28,7 +30,7 @@ func TestTCPListener(t *testing.T) {
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return net.Dial("tcp", ln.Addr().String())
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}
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testListenerImpl(t, ln, connFn, "", 0)
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testListenerImpl(t, ln, connFn, "", 0, "127.0.0.1", false)
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}
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// TestTCPListener_tls tests TLS generally
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@ -85,7 +87,7 @@ func TestTCPListener_tls(t *testing.T) {
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}
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}
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testListenerImpl(t, ln, connFn(true), "foo.example.com", 0)
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testListenerImpl(t, ln, connFn(true), "foo.example.com", 0, "127.0.0.1", false)
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ln, _, _, err = tcpListenerFactory(&configutil.Listener{
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Address: "127.0.0.1:0",
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@ -110,7 +112,7 @@ func TestTCPListener_tls(t *testing.T) {
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t.Fatalf("err: %s", err)
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}
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testListenerImpl(t, ln, connFn(false), "foo.example.com", 0)
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testListenerImpl(t, ln, connFn(false), "foo.example.com", 0, "127.0.0.1", false)
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}
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func TestTCPListener_tls13(t *testing.T) {
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@ -167,7 +169,7 @@ func TestTCPListener_tls13(t *testing.T) {
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}
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}
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testListenerImpl(t, ln, connFn(true), "foo.example.com", tls.VersionTLS13)
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testListenerImpl(t, ln, connFn(true), "foo.example.com", tls.VersionTLS13, "127.0.0.1", false)
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ln, _, _, err = tcpListenerFactory(&configutil.Listener{
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Address: "127.0.0.1:0",
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@ -194,7 +196,7 @@ func TestTCPListener_tls13(t *testing.T) {
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t.Fatalf("err: %s", err)
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}
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testListenerImpl(t, ln, connFn(false), "foo.example.com", tls.VersionTLS13)
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testListenerImpl(t, ln, connFn(false), "foo.example.com", tls.VersionTLS13, "127.0.0.1", false)
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ln, _, _, err = tcpListenerFactory(&configutil.Listener{
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Address: "127.0.0.1:0",
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@ -208,5 +210,254 @@ func TestTCPListener_tls13(t *testing.T) {
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t.Fatalf("err: %s", err)
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}
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testListenerImpl(t, ln, connFn(false), "foo.example.com", tls.VersionTLS12)
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testListenerImpl(t, ln, connFn(false), "foo.example.com", tls.VersionTLS12, "127.0.0.1", false)
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}
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func TestTCPListener_proxyProtocol(t *testing.T) {
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for name, tc := range map[string]struct {
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Behavior string
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Header *proxyproto.Header
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AuthorizedAddr string
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ExpectedAddr string
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ExpectError bool
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}{
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"none-no-header": {
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Behavior: "",
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ExpectedAddr: "127.0.0.1",
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Header: nil,
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},
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"none-v1": {
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Behavior: "",
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ExpectedAddr: "127.0.0.1",
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ExpectError: true,
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Header: &proxyproto.Header{
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Version: 1,
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Command: proxyproto.PROXY,
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TransportProtocol: proxyproto.TCPv4,
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SourceAddr: &net.TCPAddr{
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IP: net.ParseIP("10.1.1.1"),
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Port: 1000,
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},
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DestinationAddr: &net.TCPAddr{
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IP: net.ParseIP("20.2.2.2"),
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Port: 2000,
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},
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},
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},
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"none-v2": {
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Behavior: "",
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ExpectedAddr: "127.0.0.1",
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ExpectError: true,
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Header: &proxyproto.Header{
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Version: 2,
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Command: proxyproto.PROXY,
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TransportProtocol: proxyproto.TCPv4,
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SourceAddr: &net.TCPAddr{
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IP: net.ParseIP("10.1.1.1"),
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Port: 1000,
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},
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DestinationAddr: &net.TCPAddr{
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IP: net.ParseIP("20.2.2.2"),
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Port: 2000,
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},
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},
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},
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// use_always makes it possible to send the PROXY header but does not
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// require it
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"use_always-no-header": {
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Behavior: "use_always",
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ExpectedAddr: "127.0.0.1",
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Header: nil,
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},
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"use_always-header-v1": {
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Behavior: "use_always",
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ExpectedAddr: "10.1.1.1",
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Header: &proxyproto.Header{
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Version: 1,
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Command: proxyproto.PROXY,
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TransportProtocol: proxyproto.TCPv4,
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SourceAddr: &net.TCPAddr{
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IP: net.ParseIP("10.1.1.1"),
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Port: 1000,
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},
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DestinationAddr: &net.TCPAddr{
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IP: net.ParseIP("20.2.2.2"),
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Port: 2000,
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},
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},
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},
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"use_always-header-v1-unknown": {
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Behavior: "use_always",
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ExpectedAddr: "127.0.0.1",
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Header: &proxyproto.Header{
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Version: 1,
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Command: proxyproto.PROXY,
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TransportProtocol: proxyproto.UNSPEC,
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},
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},
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"use_always-header-v2": {
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Behavior: "use_always",
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ExpectedAddr: "10.1.1.1",
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Header: &proxyproto.Header{
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Version: 2,
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Command: proxyproto.PROXY,
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TransportProtocol: proxyproto.TCPv4,
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SourceAddr: &net.TCPAddr{
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IP: net.ParseIP("10.1.1.1"),
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Port: 1000,
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},
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DestinationAddr: &net.TCPAddr{
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IP: net.ParseIP("20.2.2.2"),
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Port: 2000,
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},
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},
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},
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"use_always-header-v2-unknown": {
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Behavior: "use_always",
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ExpectedAddr: "127.0.0.1",
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Header: &proxyproto.Header{
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Version: 2,
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Command: proxyproto.LOCAL,
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TransportProtocol: proxyproto.UNSPEC,
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},
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},
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"allow_authorized-no-header-in": {
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Behavior: "allow_authorized",
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AuthorizedAddr: "127.0.0.1/32",
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ExpectedAddr: "127.0.0.1",
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},
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"allow_authorized-no-header-not-in": {
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Behavior: "allow_authorized",
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AuthorizedAddr: "10.0.0.1/32",
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ExpectedAddr: "127.0.0.1",
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},
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"allow_authorized-v1-in": {
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Behavior: "allow_authorized",
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AuthorizedAddr: "127.0.0.1/32",
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ExpectedAddr: "10.1.1.1",
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Header: &proxyproto.Header{
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Version: 1,
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Command: proxyproto.PROXY,
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TransportProtocol: proxyproto.TCPv4,
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SourceAddr: &net.TCPAddr{
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IP: net.ParseIP("10.1.1.1"),
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Port: 1000,
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},
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DestinationAddr: &net.TCPAddr{
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IP: net.ParseIP("20.2.2.2"),
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Port: 2000,
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},
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},
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},
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// allow_authorized still accepts the PROXY header when not in the
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// authorized addresses but discards it silently
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"allow_authorized-v1-not-in": {
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Behavior: "allow_authorized",
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AuthorizedAddr: "10.0.0.1/32",
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ExpectedAddr: "127.0.0.1",
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Header: &proxyproto.Header{
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Version: 1,
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Command: proxyproto.PROXY,
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TransportProtocol: proxyproto.TCPv4,
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SourceAddr: &net.TCPAddr{
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IP: net.ParseIP("10.1.1.1"),
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Port: 1000,
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},
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DestinationAddr: &net.TCPAddr{
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IP: net.ParseIP("20.2.2.2"),
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Port: 2000,
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},
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},
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},
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"deny_unauthorized-no-header-in": {
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Behavior: "deny_unauthorized",
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AuthorizedAddr: "127.0.0.1/32",
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ExpectedAddr: "127.0.0.1",
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},
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"deny_unauthorized-no-header-not-in": {
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Behavior: "deny_unauthorized",
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AuthorizedAddr: "10.0.0.1/32",
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ExpectedAddr: "127.0.0.1",
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ExpectError: true,
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},
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"deny_unauthorized-v1-in": {
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Behavior: "deny_unauthorized",
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AuthorizedAddr: "127.0.0.1/32",
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ExpectedAddr: "10.1.1.1",
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Header: &proxyproto.Header{
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Version: 1,
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Command: proxyproto.PROXY,
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TransportProtocol: proxyproto.TCPv4,
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SourceAddr: &net.TCPAddr{
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IP: net.ParseIP("10.1.1.1"),
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Port: 1000,
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},
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DestinationAddr: &net.TCPAddr{
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IP: net.ParseIP("20.2.2.2"),
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Port: 2000,
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},
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},
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},
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"deny_unauthorized-v1-not-in": {
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Behavior: "deny_unauthorized",
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AuthorizedAddr: "10.0.0.1/32",
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ExpectedAddr: "127.0.0.1",
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ExpectError: true,
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Header: &proxyproto.Header{
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Version: 1,
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Command: proxyproto.PROXY,
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TransportProtocol: proxyproto.TCPv4,
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SourceAddr: &net.TCPAddr{
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IP: net.ParseIP("10.1.1.1"),
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Port: 1000,
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},
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DestinationAddr: &net.TCPAddr{
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IP: net.ParseIP("20.2.2.2"),
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Port: 2000,
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},
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},
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},
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} {
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t.Run(name, func(t *testing.T) {
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proxyProtocolAuthorizedAddrs := []*sockaddr.SockAddrMarshaler{}
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if tc.AuthorizedAddr != "" {
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sockAddr, err := sockaddr.NewSockAddr(tc.AuthorizedAddr)
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if err != nil {
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t.Fatal(err)
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}
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proxyProtocolAuthorizedAddrs = append(
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proxyProtocolAuthorizedAddrs,
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&sockaddr.SockAddrMarshaler{SockAddr: sockAddr},
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)
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}
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ln, _, _, err := tcpListenerFactory(&configutil.Listener{
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Address: "127.0.0.1:0",
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TLSDisable: true,
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ProxyProtocolBehavior: tc.Behavior,
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ProxyProtocolAuthorizedAddrs: proxyProtocolAuthorizedAddrs,
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}, nil, cli.NewMockUi())
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if err != nil {
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t.Fatalf("err: %s", err)
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}
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connFn := func(lnReal net.Listener) (net.Conn, error) {
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conn, err := net.Dial("tcp", ln.Addr().String())
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if err != nil {
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return nil, err
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}
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if tc.Header != nil {
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_, err = tc.Header.WriteTo(conn)
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}
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return conn, err
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}
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testListenerImpl(t, ln, connFn, "", 0, tc.ExpectedAddr, tc.ExpectError)
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})
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}
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}
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@ -10,12 +10,15 @@ import (
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type testListenerConnFn func(net.Listener) (net.Conn, error)
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func testListenerImpl(t *testing.T, ln net.Listener, connFn testListenerConnFn, certName string, expectedVersion uint16) {
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func testListenerImpl(t *testing.T, ln net.Listener, connFn testListenerConnFn, certName string, expectedVersion uint16, expectedAddr string, expectError bool) {
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serverCh := make(chan net.Conn, 1)
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go func() {
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server, err := ln.Accept()
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if err != nil {
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t.Errorf("err: %s", err)
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if !expectError {
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t.Errorf("err: %s", err)
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}
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close(serverCh)
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return
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}
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if certName != "" {
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@ -23,6 +26,13 @@ func testListenerImpl(t *testing.T, ln net.Listener, connFn testListenerConnFn,
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tlsConn.Handshake()
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}
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serverCh <- server
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addr, _, err := net.SplitHostPort(server.RemoteAddr().String())
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if err != nil {
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t.Error(err)
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}
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if addr != expectedAddr {
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t.Errorf("expected: %s, got: %s", expectedAddr, addr)
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}
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}()
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client, err := connFn(ln)
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@ -45,6 +55,15 @@ func testListenerImpl(t *testing.T, ln net.Listener, connFn testListenerConnFn,
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}
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server := <-serverCh
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if server == nil {
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if !expectError {
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// Something failed already so we abort the test early
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t.Fatal("aborting test because the server did not accept the connection")
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}
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return
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}
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defer client.Close()
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defer server.Close()
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@ -62,8 +81,8 @@ func testListenerImpl(t *testing.T, ln net.Listener, connFn testListenerConnFn,
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client.Close()
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<-copyCh
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if buf.String() != "foo" {
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t.Fatalf("bad: %v", buf.String())
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if (buf.String() != "foo" && !expectError) || (buf.String() == "foo" && expectError) {
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t.Fatalf("bad: %q, expectError: %t", buf.String(), expectError)
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}
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}
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|
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2
go.mod
2
go.mod
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@ -27,7 +27,6 @@ require (
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github.com/aliyun/aliyun-oss-go-sdk v0.0.0-20190307165228-86c17b95fcd5
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github.com/apple/foundationdb/bindings/go v0.0.0-20190411004307-cd5c9d91fad2
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github.com/armon/go-metrics v0.3.10
|
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github.com/armon/go-proxyproto v0.0.0-20210323213023-7e956b284f0a
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github.com/armon/go-radix v1.0.0
|
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github.com/asaskevich/govalidator v0.0.0-20190424111038-f61b66f89f4a
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github.com/aws/aws-sdk-go v1.37.19
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|
|
@ -151,6 +150,7 @@ require (
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github.com/ory/dockertest v3.3.5+incompatible
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github.com/ory/dockertest/v3 v3.8.0
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github.com/patrickmn/go-cache v2.1.0+incompatible
|
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github.com/pires/go-proxyproto v0.6.1
|
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github.com/pkg/errors v0.9.1
|
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github.com/posener/complete v1.2.3
|
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github.com/pquerna/otp v1.2.1-0.20191009055518-468c2dd2b58d
|
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|
|
|
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4
go.sum
4
go.sum
|
|
@ -205,8 +205,6 @@ github.com/armon/go-metrics v0.3.4/go.mod h1:4O98XIr/9W0sxpJ8UaYkvjk10Iff7SnFrb4
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github.com/armon/go-metrics v0.3.9/go.mod h1:4O98XIr/9W0sxpJ8UaYkvjk10Iff7SnFrb4QAOwNTFc=
|
||||
github.com/armon/go-metrics v0.3.10 h1:FR+drcQStOe+32sYyJYyZ7FIdgoGGBnwLl+flodp8Uo=
|
||||
github.com/armon/go-metrics v0.3.10/go.mod h1:4O98XIr/9W0sxpJ8UaYkvjk10Iff7SnFrb4QAOwNTFc=
|
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github.com/armon/go-proxyproto v0.0.0-20210323213023-7e956b284f0a h1:AP/vsCIvJZ129pdm9Ek7bH7yutN3hByqsMoNrWAxRQc=
|
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github.com/armon/go-proxyproto v0.0.0-20210323213023-7e956b284f0a/go.mod h1:QmP9hvJ91BbJmGVGSbutW19IC0Q9phDCLGaomwTJbgU=
|
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github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
|
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github.com/armon/go-radix v1.0.0 h1:F4z6KzEeeQIMeLFa97iZU6vupzoecKdU5TX24SNppXI=
|
||||
github.com/armon/go-radix v1.0.0/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
|
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|
|
@ -1350,6 +1348,8 @@ github.com/pierrec/lz4 v2.6.1+incompatible h1:9UY3+iC23yxF0UfGaYrGplQ+79Rg+h/q9F
|
|||
github.com/pierrec/lz4 v2.6.1+incompatible/go.mod h1:pdkljMzZIN41W+lC3N2tnIh5sFi+IEE17M5jbnwPHcY=
|
||||
github.com/pierrec/lz4/v4 v4.1.8 h1:ieHkV+i2BRzngO4Wd/3HGowuZStgq6QkPsD1eolNAO4=
|
||||
github.com/pierrec/lz4/v4 v4.1.8/go.mod h1:gZWDp/Ze/IJXGXf23ltt2EXimqmTUXEy0GFuRQyBid4=
|
||||
github.com/pires/go-proxyproto v0.6.1 h1:EBupykFmo22SDjv4fQVQd2J9NOoLPmyZA/15ldOGkPw=
|
||||
github.com/pires/go-proxyproto v0.6.1/go.mod h1:Odh9VFOZJCf9G8cLW5o435Xf1J95Jw9Gw5rnCjcwzAY=
|
||||
github.com/pkg/browser v0.0.0-20180916011732-0a3d74bf9ce4/go.mod h1:4OwLy04Bl9Ef3GJJCoec+30X3LQs/0/m4HFRt/2LUSA=
|
||||
github.com/pkg/browser v0.0.0-20210706143420-7d21f8c997e2/go.mod h1:HKlIX3XHQyzLZPlr7++PzdhaXEj94dEiJgZDTsxEqUI=
|
||||
github.com/pkg/browser v0.0.0-20210911075715-681adbf594b8 h1:KoWmjvw+nsYOo29YJK9vDA65RGE3NrOnUtO7a+RF9HU=
|
||||
|
|
|
|||
|
|
@ -1,14 +1,15 @@
|
|||
package proxyutil
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"net"
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
proxyproto "github.com/armon/go-proxyproto"
|
||||
"github.com/hashicorp/go-secure-stdlib/parseutil"
|
||||
sockaddr "github.com/hashicorp/go-sockaddr"
|
||||
proxyproto "github.com/pires/go-proxyproto"
|
||||
)
|
||||
|
||||
// ProxyProtoConfig contains configuration for the PROXY protocol
|
||||
|
|
@ -42,33 +43,33 @@ func WrapInProxyProto(listener net.Listener, config *ProxyProtoConfig) (net.List
|
|||
case "use_always":
|
||||
newLn = &proxyproto.Listener{
|
||||
Listener: listener,
|
||||
ProxyHeaderTimeout: 10 * time.Second,
|
||||
ReadHeaderTimeout: 10 * time.Second,
|
||||
}
|
||||
|
||||
case "allow_authorized", "deny_unauthorized":
|
||||
newLn = &proxyproto.Listener{
|
||||
Listener: listener,
|
||||
ProxyHeaderTimeout: 10 * time.Second,
|
||||
SourceCheck: func(addr net.Addr) (bool, error) {
|
||||
ReadHeaderTimeout: 10 * time.Second,
|
||||
Policy: func(addr net.Addr) (proxyproto.Policy, error) {
|
||||
config.RLock()
|
||||
defer config.RUnlock()
|
||||
|
||||
sa, err := sockaddr.NewSockAddr(addr.String())
|
||||
if err != nil {
|
||||
return false, fmt.Errorf("error parsing remote address: %w", err)
|
||||
return proxyproto.REJECT, fmt.Errorf("error parsing remote address: %w", err)
|
||||
}
|
||||
|
||||
for _, authorizedAddr := range config.AuthorizedAddrs {
|
||||
if authorizedAddr.Contains(sa) {
|
||||
return true, nil
|
||||
return proxyproto.USE, nil
|
||||
}
|
||||
}
|
||||
|
||||
if config.Behavior == "allow_authorized" {
|
||||
return false, nil
|
||||
return proxyproto.IGNORE, nil
|
||||
}
|
||||
|
||||
return false, proxyproto.ErrInvalidUpstream
|
||||
return proxyproto.REJECT, errors.New(`upstream connection not trusted proxy_protocol_behavior is "deny_unauthorized"`)
|
||||
},
|
||||
}
|
||||
default:
|
||||
|
|
|
|||
Loading…
Reference in New Issue