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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,140 @@ | ||
| package utils | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "io/ioutil" | ||
| "net" | ||
| "net/http" | ||
| "os" | ||
| "runtime" | ||
| "strings" | ||
| "time" | ||
|
|
||
| "github.com/cornelk/hashmap" | ||
| "github.com/docker/go-connections/tlsconfig" | ||
|
|
||
| "github.com/projecteru2/core/log" | ||
| ) | ||
|
|
||
| var defaultHTTPClient = &http.Client{ | ||
| CheckRedirect: checkRedirect, | ||
| Transport: getDefaultTransport(), | ||
| } | ||
|
|
||
| var defaultUnixSockClient = &http.Client{ | ||
| Transport: getDefaultUnixSockTransport(), | ||
| } | ||
|
|
||
| var httpsClientCache = hashmap.New(32) | ||
|
|
||
| // GetHTTPClient returns a HTTP client | ||
| func GetHTTPClient() *http.Client { | ||
| return defaultHTTPClient | ||
| } | ||
|
|
||
| // GetUnixSockClient . | ||
| func GetUnixSockClient() *http.Client { | ||
| return defaultUnixSockClient | ||
| } | ||
|
|
||
| // GetHTTPSClient returns an HTTPS client | ||
| // if cert_path/ca/cert/key is empty, it returns an HTTP client instead | ||
| func GetHTTPSClient(ctx context.Context, certPath, name, ca, cert, key string) (client *http.Client, err error) { | ||
| if certPath == "" || ca == "" || cert == "" || key == "" { | ||
| return GetHTTPClient(), nil | ||
| } | ||
|
|
||
| cacheKey := name + SHA256(fmt.Sprintf("%s-%s-%s-%s-%s", certPath, name, ca, cert, key))[:8] | ||
| if httpsClient, ok := httpsClientCache.Get(cacheKey); ok { | ||
| return httpsClient.(*http.Client), nil | ||
| } | ||
|
|
||
| caFile, err := ioutil.TempFile(certPath, fmt.Sprintf("ca-%s", name)) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| certFile, err := ioutil.TempFile(certPath, fmt.Sprintf("cert-%s", name)) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| keyFile, err := ioutil.TempFile(certPath, fmt.Sprintf("key-%s", name)) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| if err = dumpFromString(ctx, caFile, certFile, keyFile, ca, cert, key); err != nil { | ||
| return nil, err | ||
| } | ||
| options := tlsconfig.Options{ | ||
| CAFile: caFile.Name(), | ||
| CertFile: certFile.Name(), | ||
| KeyFile: keyFile.Name(), | ||
| InsecureSkipVerify: true, | ||
| } | ||
| defer os.Remove(caFile.Name()) | ||
| defer os.Remove(certFile.Name()) | ||
| defer os.Remove(keyFile.Name()) | ||
| tlsc, err := tlsconfig.Client(options) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| transport := getDefaultTransport() | ||
| transport.TLSClientConfig = tlsc | ||
|
|
||
| client = &http.Client{ | ||
| CheckRedirect: checkRedirect, | ||
| Transport: transport, | ||
| } | ||
| httpsClientCache.Set(cacheKey, client) | ||
| return client, nil | ||
| } | ||
|
|
||
| func getDefaultTransport() *http.Transport { | ||
| return &http.Transport{ | ||
| DialContext: (&net.Dialer{ | ||
| KeepAlive: time.Second * 30, | ||
| Timeout: time.Second * 30, | ||
| }).DialContext, | ||
|
|
||
| IdleConnTimeout: time.Second * 90, | ||
| MaxIdleConnsPerHost: runtime.GOMAXPROCS(0) + 1, | ||
| Proxy: http.ProxyFromEnvironment, | ||
| } | ||
| } | ||
|
|
||
| func getDefaultUnixSockTransport() *http.Transport { | ||
| return &http.Transport{ | ||
| DialContext: func(_ context.Context, _, addr string) (net.Conn, error) { | ||
| return net.DialTimeout("unix", strings.Split(addr, ":")[0], time.Second*30) | ||
| }, | ||
|
|
||
| IdleConnTimeout: time.Second * 90, | ||
| MaxIdleConnsPerHost: runtime.GOMAXPROCS(0) + 1, | ||
| DisableCompression: true, | ||
| } | ||
| } | ||
|
|
||
| func dumpFromString(ctx context.Context, ca, cert, key *os.File, caStr, certStr, keyStr string) error { | ||
| files := []*os.File{ca, cert, key} | ||
| data := []string{caStr, certStr, keyStr} | ||
| for i := 0; i < 3; i++ { | ||
| if _, err := files[i].WriteString(data[i]); err != nil { | ||
| return err | ||
| } | ||
| if err := files[i].Chmod(0444); err != nil { | ||
| return err | ||
| } | ||
| if err := files[i].Close(); err != nil { | ||
| return err | ||
| } | ||
| } | ||
| log.Debug(ctx, "[dumpFromString] Dump ca.pem, cert.pem, key.pem from string") | ||
| return nil | ||
| } | ||
|
|
||
| func checkRedirect(req *http.Request, via []*http.Request) error { | ||
| if via[0].Method == http.MethodGet { | ||
| return http.ErrUseLastResponse | ||
| } | ||
| return fmt.Errorf("unexpected redirect") | ||
| } |