Add new module type for adb_keys.

Bug: 371107666
Change-Id: Ibaee842f807bc829ca615d5754851e03a4aa5548
Test: CIs
diff --git a/etc/adb_keys.go b/etc/adb_keys.go
new file mode 100644
index 0000000..1bce2f1
--- /dev/null
+++ b/etc/adb_keys.go
@@ -0,0 +1,66 @@
+// Copyright 2024 Google Inc. All rights reserved.
+//
+// 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 etc
+
+import (
+	"android/soong/android"
+)
+
+func init() {
+	android.RegisterModuleType("adb_keys", AdbKeysModuleFactory)
+}
+
+type AdbKeysModule struct {
+	android.ModuleBase
+	outputPath  android.OutputPath
+	installPath android.InstallPath
+}
+
+func AdbKeysModuleFactory() android.Module {
+	module := &AdbKeysModule{}
+	android.InitAndroidArchModule(module, android.DeviceSupported, android.MultilibFirst)
+	return module
+}
+
+func (m *AdbKeysModule) GenerateAndroidBuildActions(ctx android.ModuleContext) {
+	productVariables := ctx.Config().ProductVariables()
+	if !(android.Bool(productVariables.Debuggable) && len(android.String(productVariables.AdbKeys)) > 0) {
+		m.Disable()
+		m.SkipInstall()
+		return
+	}
+
+	m.outputPath = android.PathForModuleOut(ctx, "adb_keys").OutputPath
+	input := android.ExistentPathForSource(ctx, android.String(productVariables.AdbKeys))
+	ctx.Build(pctx, android.BuildParams{
+		Rule:   android.Cp,
+		Output: m.outputPath,
+		Input:  input.Path(),
+	})
+	m.installPath = android.PathForModuleInPartitionInstall(ctx, ctx.DeviceConfig().ProductPath(), "etc/security")
+	ctx.InstallFile(m.installPath, "adb_keys", m.outputPath)
+}
+
+func (m *AdbKeysModule) AndroidMkEntries() []android.AndroidMkEntries {
+	if m.IsSkipInstall() {
+		return []android.AndroidMkEntries{}
+	}
+
+	return []android.AndroidMkEntries{
+		{
+			Class:      "ETC",
+			OutputFile: android.OptionalPathForPath(m.outputPath),
+		}}
+}