feat: Inital commit

vendor/cloud.google.com/go/auth/internal/compute/compute.go

@@ -0,0 +1,65 @@
+// Copyright 2024 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package compute
+
+import (
+	"log"
+	"runtime"
+	"strings"
+	"sync"
+)
+
+var (
+	vmOnGCEOnce sync.Once
+	vmOnGCE     bool
+)
+
+// OnComputeEngine returns whether the client is running on GCE.
+//
+// This is a copy of the gRPC internal googlecloud.OnGCE() func at:
+// https://github.com/grpc/grpc-go/blob/master/internal/googlecloud/googlecloud.go
+// The functionality is similar to the metadata.OnGCE() func at:
+// https://github.com/googleapis/google-cloud-go/blob/main/compute/metadata/metadata.go
+// The difference is that OnComputeEngine() does not perform HTTP or DNS check on the metadata server.
+// In particular, OnComputeEngine() will return false on Serverless.
+func OnComputeEngine() bool {
+	vmOnGCEOnce.Do(func() {
+		mf, err := manufacturer()
+		if err != nil {
+			log.Printf("Failed to read manufacturer, vmOnGCE=false: %v", err)
+			return
+		}
+		vmOnGCE = isRunningOnGCE(mf, runtime.GOOS)
+	})
+	return vmOnGCE
+}
+
+// isRunningOnGCE checks whether the local system, without doing a network request, is
+// running on GCP.
+func isRunningOnGCE(manufacturer []byte, goos string) bool {
+	name := string(manufacturer)
+	switch goos {
+	case "linux":
+		name = strings.TrimSpace(name)
+		return name == "Google" || name == "Google Compute Engine"
+	case "windows":
+		name = strings.Replace(name, " ", "", -1)
+		name = strings.Replace(name, "\n", "", -1)
+		name = strings.Replace(name, "\r", "", -1)
+		return name == "Google"
+	default:
+		return false
+	}
+}

vendor/cloud.google.com/go/auth/internal/compute/manufacturer.go

@@ -0,0 +1,22 @@
+//go:build !(linux || windows)
+// +build !linux,!windows
+
+// Copyright 2024 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package compute
+
+func manufacturer() ([]byte, error) {
+	return nil, nil
+}

vendor/cloud.google.com/go/auth/internal/compute/manufacturer_linux.go

@@ -0,0 +1,23 @@
+// Copyright 2024 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package compute
+
+import "os"
+
+const linuxProductNameFile = "/sys/class/dmi/id/product_name"
+
+func manufacturer() ([]byte, error) {
+	return os.ReadFile(linuxProductNameFile)
+}

vendor/cloud.google.com/go/auth/internal/compute/manufacturer_windows.go

@@ -0,0 +1,46 @@
+// Copyright 2024 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package compute
+
+import (
+	"errors"
+	"os/exec"
+	"regexp"
+	"strings"
+)
+
+const (
+	windowsCheckCommand      = "powershell.exe"
+	windowsCheckCommandArgs  = "Get-WmiObject -Class Win32_BIOS"
+	powershellOutputFilter   = "Manufacturer"
+	windowsManufacturerRegex = ":(.*)"
+)
+
+func manufacturer() ([]byte, error) {
+	cmd := exec.Command(windowsCheckCommand, windowsCheckCommandArgs)
+	out, err := cmd.Output()
+	if err != nil {
+		return nil, err
+	}
+	for _, line := range strings.Split(strings.TrimSuffix(string(out), "\n"), "\n") {
+		if strings.HasPrefix(line, powershellOutputFilter) {
+			re := regexp.MustCompile(windowsManufacturerRegex)
+			name := re.FindString(line)
+			name = strings.TrimLeft(name, ":")
+			return []byte(name), nil
+		}
+	}
+	return nil, errors.New("cannot determine the machine's manufacturer")
+}