Prepare v2ray client/server transport
This commit is contained in:
世界
253
cmd/internal/protogen/main.go
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253
cmd/internal/protogen/main.go
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@@ -0,0 +1,253 @@
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package main
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import (
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"bufio"
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"bytes"
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"fmt"
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"go/build"
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"io"
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"os"
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"os/exec"
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"path/filepath"
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"regexp"
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"runtime"
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"strconv"
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"strings"
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)
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// envFile returns the name of the Go environment configuration file.
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// Copy from https://github.com/golang/go/blob/c4f2a9788a7be04daf931ac54382fbe2cb754938/src/cmd/go/internal/cfg/cfg.go#L150-L166
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func envFile() (string, error) {
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if file := os.Getenv("GOENV"); file != "" {
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if file == "off" {
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return "", fmt.Errorf("GOENV=off")
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}
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return file, nil
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}
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dir, err := os.UserConfigDir()
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if err != nil {
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return "", err
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}
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if dir == "" {
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return "", fmt.Errorf("missing user-config dir")
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}
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return filepath.Join(dir, "go", "env"), nil
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}
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// GetRuntimeEnv returns the value of runtime environment variable,
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// that is set by running following command: `go env -w key=value`.
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func GetRuntimeEnv(key string) (string, error) {
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file, err := envFile()
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if err != nil {
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return "", err
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}
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if file == "" {
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return "", fmt.Errorf("missing runtime env file")
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}
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var data []byte
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var runtimeEnv string
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data, readErr := os.ReadFile(file)
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if readErr != nil {
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return "", readErr
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}
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envStrings := strings.Split(string(data), "\n")
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for _, envItem := range envStrings {
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envItem = strings.TrimSuffix(envItem, "\r")
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envKeyValue := strings.Split(envItem, "=")
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if strings.EqualFold(strings.TrimSpace(envKeyValue[0]), key) {
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runtimeEnv = strings.TrimSpace(envKeyValue[1])
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}
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}
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return runtimeEnv, nil
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}
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// GetGOBIN returns GOBIN environment variable as a string. It will NOT be empty.
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func GetGOBIN() string {
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// The one set by user explicitly by `export GOBIN=/path` or `env GOBIN=/path command`
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GOBIN := os.Getenv("GOBIN")
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if GOBIN == "" {
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var err error
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// The one set by user by running `go env -w GOBIN=/path`
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GOBIN, err = GetRuntimeEnv("GOBIN")
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if err != nil {
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// The default one that Golang uses
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return filepath.Join(build.Default.GOPATH, "bin")
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}
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if GOBIN == "" {
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return filepath.Join(build.Default.GOPATH, "bin")
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}
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return GOBIN
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}
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return GOBIN
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}
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func getInstalledProtocVersion(protocPath string) (string, error) {
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cmd := exec.Command(protocPath, "--version")
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cmd.Env = append(cmd.Env, os.Environ()...)
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output, cmdErr := cmd.CombinedOutput()
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if cmdErr != nil {
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return "", cmdErr
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}
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versionRegexp := regexp.MustCompile(`protoc\s*(\d+\.\d+\.\d+)`)
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matched := versionRegexp.FindStringSubmatch(string(output))
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return matched[1], nil
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}
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func parseVersion(s string, width int) int64 {
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strList := strings.Split(s, ".")
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format := fmt.Sprintf("%%s%%0%ds", width)
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v := ""
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for _, value := range strList {
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v = fmt.Sprintf(format, v, value)
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}
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var result int64
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var err error
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if result, err = strconv.ParseInt(v, 10, 64); err != nil {
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return 0
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}
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return result
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}
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func needToUpdate(targetedVersion, installedVersion string) bool {
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vt := parseVersion(targetedVersion, 4)
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vi := parseVersion(installedVersion, 4)
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return vt > vi
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}
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func main() {
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pwd, err := os.Getwd()
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if err != nil {
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fmt.Println("Can not get current working directory.")
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os.Exit(1)
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}
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GOBIN := GetGOBIN()
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binPath := os.Getenv("PATH")
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pathSlice := []string{pwd, GOBIN, binPath}
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binPath = strings.Join(pathSlice, string(os.PathListSeparator))
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os.Setenv("PATH", binPath)
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suffix := ""
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if runtime.GOOS == "windows" {
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suffix = ".exe"
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}
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protoc := "protoc"
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if linkPath, err := os.Readlink(protoc); err == nil {
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protoc = linkPath
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}
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protoFilesMap := make(map[string][]string)
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walkErr := filepath.Walk("./", func(path string, info os.FileInfo, err error) error {
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if err != nil {
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fmt.Println(err)
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return err
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}
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if info.IsDir() {
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return nil
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}
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dir := filepath.Dir(path)
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filename := filepath.Base(path)
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if strings.HasSuffix(filename, ".proto") &&
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filename != "typed_message.proto" &&
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filename != "descriptor.proto" {
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protoFilesMap[dir] = append(protoFilesMap[dir], path)
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}
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return nil
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})
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if walkErr != nil {
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fmt.Println(walkErr)
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os.Exit(1)
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}
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for _, files := range protoFilesMap {
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for _, relProtoFile := range files {
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args := []string{
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"-I", ".",
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"--go_out", pwd,
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"--go_opt", "paths=source_relative",
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"--go-grpc_out", pwd,
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"--go-grpc_opt", "paths=source_relative",
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"--plugin", "protoc-gen-go=" + filepath.Join(GOBIN, "protoc-gen-go"+suffix),
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"--plugin", "protoc-gen-go-grpc=" + filepath.Join(GOBIN, "protoc-gen-go-grpc"+suffix),
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}
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args = append(args, relProtoFile)
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cmd := exec.Command(protoc, args...)
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cmd.Env = append(cmd.Env, os.Environ()...)
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output, cmdErr := cmd.CombinedOutput()
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if len(output) > 0 {
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fmt.Println(string(output))
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}
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if cmdErr != nil {
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fmt.Println(cmdErr)
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os.Exit(1)
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}
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}
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}
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normalizeWalkErr := filepath.Walk("./", func(path string, info os.FileInfo, err error) error {
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if err != nil {
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fmt.Println(err)
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return err
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}
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if info.IsDir() {
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return nil
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}
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filename := filepath.Base(path)
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if strings.HasSuffix(filename, ".pb.go") &&
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path != "config.pb.go" {
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if err := NormalizeGeneratedProtoFile(path); err != nil {
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fmt.Println(err)
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os.Exit(1)
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}
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}
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return nil
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})
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if normalizeWalkErr != nil {
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fmt.Println(normalizeWalkErr)
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os.Exit(1)
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}
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}
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func NormalizeGeneratedProtoFile(path string) error {
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fd, err := os.OpenFile(path, os.O_RDWR, 0o644)
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if err != nil {
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return err
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}
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_, err = fd.Seek(0, io.SeekStart)
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if err != nil {
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return err
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}
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out := bytes.NewBuffer(nil)
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scanner := bufio.NewScanner(fd)
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valid := false
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for scanner.Scan() {
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if !valid && !strings.HasPrefix(scanner.Text(), "package ") {
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continue
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}
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valid = true
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out.Write(scanner.Bytes())
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out.Write([]byte("\n"))
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}
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_, err = fd.Seek(0, io.SeekStart)
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if err != nil {
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return err
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}
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err = fd.Truncate(0)
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if err != nil {
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return err
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}
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_, err = io.Copy(fd, bytes.NewReader(out.Bytes()))
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if err != nil {
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return err
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}
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return nil
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}
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