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package control
import (
"net/http"
"net/url"
"os"
"strings"
"time"
"v2ray.com/core/common"
"v2ray.com/core/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 <url>"},
}
}
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{}))
}
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