Xray-core/main/commands/all/api/shared.go

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package api
import (
"bytes"
"context"
"fmt"
"io"
"net/http"
"net/url"
"os"
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"reflect"
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"strings"
"time"
"github.com/xtls/xray-core/common/buf"
"github.com/xtls/xray-core/main/commands/base"
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"google.golang.org/grpc"
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"google.golang.org/protobuf/encoding/protojson"
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"google.golang.org/protobuf/proto"
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)
type serviceHandler func(ctx context.Context, conn *grpc.ClientConn, cmd *base.Command, args []string) string
var (
apiServerAddrPtr string
apiTimeout int
)
func setSharedFlags(cmd *base.Command) {
cmd.Flag.StringVar(&apiServerAddrPtr, "s", "127.0.0.1:8080", "")
cmd.Flag.StringVar(&apiServerAddrPtr, "server", "127.0.0.1:8080", "")
cmd.Flag.IntVar(&apiTimeout, "t", 3, "")
cmd.Flag.IntVar(&apiTimeout, "timeout", 3, "")
}
func dialAPIServer() (conn *grpc.ClientConn, ctx context.Context, close func()) {
ctx, cancel := context.WithTimeout(context.Background(), time.Duration(apiTimeout)*time.Second)
conn, err := grpc.DialContext(ctx, apiServerAddrPtr, grpc.WithInsecure(), grpc.WithBlock())
if err != nil {
base.Fatalf("failed to dial %s", apiServerAddrPtr)
}
close = func() {
cancel()
conn.Close()
}
return
}
// loadArg loads one arg, maybe an remote url, or local file path
func loadArg(arg string) (out io.Reader, err error) {
var data []byte
switch {
case strings.HasPrefix(arg, "http://"), strings.HasPrefix(arg, "https://"):
data, err = fetchHTTPContent(arg)
case arg == "stdin:":
data, err = io.ReadAll(os.Stdin)
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default:
data, err = os.ReadFile(arg)
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}
if err != nil {
return
}
out = bytes.NewBuffer(data)
return
}
// fetchHTTPContent dials https for remote content
func fetchHTTPContent(target string) ([]byte, error) {
parsedTarget, err := url.Parse(target)
if err != nil {
return nil, err
}
if s := strings.ToLower(parsedTarget.Scheme); s != "http" && s != "https" {
return nil, fmt.Errorf("invalid scheme: %s", 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, fmt.Errorf("failed to dial to %s", target)
}
defer resp.Body.Close()
if resp.StatusCode != 200 {
return nil, fmt.Errorf("unexpected HTTP status code: %d", resp.StatusCode)
}
content, err := buf.ReadAllToBytes(resp.Body)
if err != nil {
return nil, fmt.Errorf("failed to read HTTP response")
}
return content, nil
}
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func protoToJSONString(m proto.Message, _, indent string) (string, error) {
ops := protojson.MarshalOptions{
Indent: indent,
EmitUnpopulated: true,
}
b, err := ops.Marshal(m)
return string(b), err
}
func showJSONResponse(m proto.Message) {
if isNil(m) {
return
}
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output, err := protoToJSONString(m, "", " ")
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if err != nil {
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fmt.Fprintf(os.Stdout, "%v\n", m)
base.Fatalf("error encode json: %s", err)
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}
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fmt.Println(output)
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}
func isNil(i interface{}) bool {
vi := reflect.ValueOf(i)
if vi.Kind() == reflect.Ptr {
return vi.IsNil()
}
return i == nil
}