mirror of https://github.com/v2fly/v2ray-core.git
74 lines
1.6 KiB
Go
74 lines
1.6 KiB
Go
package cmdarg
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import (
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"bytes"
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"io"
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"io/ioutil"
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"net/http"
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"net/url"
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"strings"
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"time"
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"github.com/v2fly/v2ray-core/v4/common/buf"
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)
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// LoadArg loads one arg, maybe an remote url, or local file path
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func LoadArg(arg string) (out io.Reader, err error) {
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bs, err := LoadArgToBytes(arg)
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if err != nil {
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return nil, err
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}
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out = bytes.NewBuffer(bs)
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return
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}
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// LoadArgToBytes loads one arg to []byte, maybe an remote url, or local file path
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func LoadArgToBytes(arg string) (out []byte, err error) {
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switch {
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case strings.HasPrefix(arg, "http://"), strings.HasPrefix(arg, "https://"):
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out, err = FetchHTTPContent(arg)
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default:
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out, err = ioutil.ReadFile(arg)
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}
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if err != nil {
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return
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}
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return
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}
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// FetchHTTPContent dials https for remote content
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func FetchHTTPContent(target string) ([]byte, error) {
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parsedTarget, err := url.Parse(target)
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if err != nil {
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return nil, newError("invalid URL: ", target).Base(err)
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}
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if s := strings.ToLower(parsedTarget.Scheme); s != "http" && s != "https" {
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return nil, newError("invalid scheme: ", parsedTarget.Scheme)
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}
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client := &http.Client{
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Timeout: 30 * time.Second,
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}
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resp, err := client.Do(&http.Request{
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Method: "GET",
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URL: parsedTarget,
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Close: true,
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})
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if err != nil {
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return nil, newError("failed to dial to ", target).Base(err)
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}
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defer resp.Body.Close()
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if resp.StatusCode != 200 {
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return nil, newError("unexpected HTTP status code: ", resp.StatusCode)
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}
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content, err := buf.ReadAllToBytes(resp.Body)
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if err != nil {
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return nil, newError("failed to read HTTP response").Base(err)
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}
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return content, nil
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}
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