package control import ( "net/http" "net/url" "os" "strings" "time" "github.com/v2fly/v2ray-core/v4/common" "github.com/v2fly/v2ray-core/v4/common/buf" ) type FetchCommand struct{} func (c *FetchCommand) Name() string { return "fetch" } func (c *FetchCommand) Description() Description { return Description{ Short: "Fetch resources", Usage: []string{"v2ctl fetch "}, } } func (c *FetchCommand) Execute(args []string) error { if len(args) < 1 { return newError("empty url") } content, err := FetchHTTPContent(args[0]) if err != nil { return newError("failed to read HTTP response").Base(err) } os.Stdout.Write(content) return nil } // FetchHTTPContent dials https for remote content 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 init() { common.Must(RegisterCommand(&FetchCommand{})) }