package external //go:generate errorgen import ( "bytes" "io" "io/ioutil" "net/http" "net/url" "os" "strings" "time" "v2ray.com/core/common/buf" "v2ray.com/core/common/platform/ctlcmd" "v2ray.com/core/main/confloader" ) func ConfigLoader(arg string) (out io.Reader, err error) { var data []byte if strings.HasPrefix(arg, "http://") || strings.HasPrefix(arg, "https://") { data, err = FetchHTTPContent(arg) } else if arg == "stdin:" { data, err = ioutil.ReadAll(os.Stdin) } else { data, err = ioutil.ReadFile(arg) } if err != nil { return } out = bytes.NewBuffer(data) return } func FetchHTTPContent(target string) ([]byte, error) { parsedTarget, err := url.Parse(target) if err != nil { return nil, newError("invalid URL: ", target).Base(err) } if s := strings.ToLower(parsedTarget.Scheme); s != "http" && s != "https" { return nil, newError("invalid scheme: ", parsedTarget.Scheme) } client := &http.Client{ Timeout: 30 * time.Second, } resp, err := client.Do(&http.Request{ Method: "GET", URL: parsedTarget, Close: true, }) if err != nil { return nil, newError("failed to dial to ", target).Base(err) } defer resp.Body.Close() if resp.StatusCode != 200 { return nil, newError("unexpected HTTP status code: ", resp.StatusCode) } content, err := buf.ReadAllToBytes(resp.Body) if err != nil { return nil, newError("failed to read HTTP response").Base(err) } return content, nil } func ExtConfigLoader(files []string) (io.Reader, error) { buf, err := ctlcmd.Run(append([]string{"config"}, files...), os.Stdin) if err != nil { return nil, err } return strings.NewReader(buf.String()), nil } func init() { confloader.EffectiveConfigFileLoader = ConfigLoader confloader.EffectiveExtConfigLoader = ExtConfigLoader }