pkg/ioutilx: Add WindowsMixedPathFromWindowsSubsystemPath()

WindowsMixedPathFromWindowsSubsystemPath converts a Windows Subsystem path to a Windows mixed path.
mixed means using forward slashes instead of backslashes.
e.g. /mnt/c/Users/foo/bar -> C:/Users/foo/bar .

Signed-off-by: Norio Nomura <norio.nomura@gmail.com>

Author: norio-nomura

pkg/ioutilx/ioutilx.go

@@ -67,3 +67,15 @@ func WindowsSubsystemPathForLinux(ctx context.Context, orig, distro string) (str
 	}
 	return strings.TrimSpace(string(out)), nil
 }
+
+// WindowsMixedPathFromWindowsSubsystemPath converts a Windows Subsystem path to a Windows mixed path.
+// mixed means using forward slashes instead of backslashes.
+// e.g. /mnt/c/Users/foo/bar -> C:/Users/foo/bar .
+func WindowsMixedPathFromWindowsSubsystemPath(ctx context.Context, orig string) (string, error) {
+	out, err := exec.CommandContext(ctx, "cygpath", "-m", orig).CombinedOutput()
+	if err != nil {
+		logrus.WithError(err).Errorf("failed to convert path from mingw, maybe not using Git ssh?")
+		return "", err
+	}
+	return strings.TrimSpace(string(out)), nil
+}

pkg/sshutil/sshutil.go

@@ -523,6 +523,14 @@ func ExecuteScriptViaInProcessClient(host string, port int, c *sshocker.SSHConfi
 	if identityFile == "" {
 		return "", "", errors.New("failed to find IdentityFile in SSHConfig.AdditionalArgs")
 	}
+	// Convert path from Windows Subsystem path to Windows path
+	if runtime.GOOS == "windows" {
+		var err error
+		identityFile, err = ioutilx.WindowsMixedPathFromWindowsSubsystemPath(context.Background(), identityFile)
+		if err != nil {
+			return "", "", err
+		}
+	}
 	user := findRegexpInSSHArgs(c.AdditionalArgs, regexp.MustCompile(`^User[= ]+(?:['"]?)([^'"]+)(?:['"]?)$`))
 	if user == "" {
 		return "", "", errors.New("failed to find User in SSHConfig.AdditionalArgs")