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@@ -99,9 +99,6 @@ jobs: | |
| id: set-architectures | ||
| run: | | ||
| ARCHITECTURES=${{ needs.configure.outputs.architectures }} | ||
| if [ "${{ matrix.component }}" == "proxy" ]; then | ||
| ARCHITECTURES=$(echo ${ARCHITECTURES} | sed 's/,linux\/arm\/v7//') | ||
| fi | ||
| echo "ARCHITECTURES=${ARCHITECTURES}" >> $GITHUB_ENV | ||
| - name: Set up QEMU | ||
| uses: docker/[email protected] | ||
|
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||
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| @@ -0,0 +1,41 @@ | ||
| // Copyright 2019-2024 The Liqo Authors | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package main | ||
|
|
||
| import ( | ||
| "context" | ||
| "flag" | ||
| "os" | ||
|
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| "k8s.io/klog/v2" | ||
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| "github.com/liqotech/liqo/pkg/proxy" | ||
| ) | ||
|
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| func main() { | ||
| ctx := context.Background() | ||
|
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| port := flag.Int("port", 8080, "port to listen on") | ||
| allowedHosts := flag.String("allowed-hosts", "", "comma separated list of allowed hosts") | ||
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| flag.Parse() | ||
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| p := proxy.New(*allowedHosts, *port) | ||
|
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| if err := p.Start(ctx); err != nil { | ||
| klog.Error(err) | ||
| os.Exit(1) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,86 @@ | ||
| // Copyright 2019-2024 The Liqo Authors | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package proxy | ||
|
|
||
| import ( | ||
| "bufio" | ||
| "io" | ||
| "net" | ||
| "net/http" | ||
| "time" | ||
|
|
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| "k8s.io/klog/v2" | ||
| ) | ||
|
|
||
| func (p *Proxy) handleConnect(c net.Conn) { | ||
| br := bufio.NewReader(c) | ||
| req, err := http.ReadRequest(br) | ||
| if err != nil { | ||
| klog.Errorf("error reading request: %v", err) | ||
| return | ||
| } | ||
|
|
||
| if req.Method != http.MethodConnect { | ||
| response := &http.Response{ | ||
| StatusCode: http.StatusMethodNotAllowed, | ||
| ProtoMajor: 1, | ||
| ProtoMinor: 1, | ||
| } | ||
| response.Write(c) | ||
| c.Close() | ||
| return | ||
| } | ||
|
|
||
| if !p.isAllowed(req.URL.Host) { | ||
| klog.Infof("host %s is not allowed", req.URL.Host) | ||
|
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| response := &http.Response{ | ||
| StatusCode: http.StatusForbidden, | ||
| ProtoMajor: 1, | ||
| ProtoMinor: 1, | ||
| } | ||
| response.Write(c) | ||
| return | ||
| } | ||
|
|
||
| klog.Infof("handling CONNECT to %s", req.URL.Host) | ||
|
|
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| response := &http.Response{ | ||
| StatusCode: 200, | ||
| ProtoMajor: 1, | ||
| ProtoMinor: 1, | ||
| } | ||
| response.Write(c) | ||
|
|
||
| destConn, err := net.DialTimeout("tcp", req.URL.Host, 30*time.Second) | ||
| if err != nil { | ||
| response := &http.Response{ | ||
| StatusCode: http.StatusRequestTimeout, | ||
| ProtoMajor: 1, | ||
| ProtoMinor: 1, | ||
| } | ||
| response.Write(c) | ||
| return | ||
| } | ||
|
|
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| go transfer(destConn, c) | ||
| go transfer(c, destConn) | ||
| } | ||
|
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| func transfer(destination io.WriteCloser, source io.ReadCloser) { | ||
| defer destination.Close() | ||
| defer source.Close() | ||
| io.Copy(destination, source) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,86 @@ | ||
| // Copyright 2019-2024 The Liqo Authors | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package proxy | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "net" | ||
| "strings" | ||
|
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| "k8s.io/klog/v2" | ||
| "sigs.k8s.io/controller-runtime/pkg/manager" | ||
| ) | ||
|
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| var _ manager.Runnable = &Proxy{} | ||
|
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| type Proxy struct { | ||
| AllowedHosts []string | ||
| Port int | ||
| } | ||
|
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| func New(allowedHosts string, port int) *Proxy { | ||
| ah := strings.Split(allowedHosts, ",") | ||
| // remove empty strings | ||
| for i := 0; i < len(ah); i++ { | ||
| if ah[i] == "" { | ||
| ah = append(ah[:i], ah[i+1:]...) | ||
| i-- | ||
| } | ||
| } | ||
|
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| return &Proxy{ | ||
| AllowedHosts: ah, | ||
| Port: port, | ||
| } | ||
| } | ||
|
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| func (p *Proxy) Start(ctx context.Context) error { | ||
| klog.Infof("proxy listening on port %d", p.Port) | ||
| listener, err := net.Listen("tcp", fmt.Sprintf(":%d", p.Port)) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer listener.Close() | ||
|
|
||
| for { | ||
| select { | ||
| case <-ctx.Done(): | ||
| return nil | ||
| default: | ||
| } | ||
|
|
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| conn, err := listener.Accept() | ||
| if err != nil { | ||
| klog.Errorf("error accepting connection: %v", err) | ||
| continue | ||
| } | ||
|
|
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| go p.handleConnect(conn) | ||
| } | ||
| } | ||
|
|
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| func (p *Proxy) isAllowed(host string) bool { | ||
| if len(p.AllowedHosts) == 0 { | ||
| return true | ||
| } | ||
|
|
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| for _, allowedHost := range p.AllowedHosts { | ||
| if host == allowedHost { | ||
| return true | ||
| } | ||
| } | ||
| return false | ||
| } |
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