//
// Copyright (C) 2018 The Android Open Source Project
//
// 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.
//

// The network stack can be compiled using system_current (non-finalized) SDK, or finalized system_X
// SDK. There is also a variant that uses system_current SDK and runs in the system process
// (InProcessNetworkStack). The following structure is used to create the build rules:
//
//                          NetworkStackAndroidLibraryDefaults <-- common defaults for android libs
//                                     /           \
//    +NetworkStackApiStableShims --> /             \ <-- +NetworkStackApiCurrentShims
//    +NetworkStackApiStableLevel    /               \    +NetworkStackApiCurrentLevel
//                                  /                 \
//           NetworkStackApiStableLib         NetworkStackApiCurrentLib <-- android libs w/ all code
//                     |                                     |             (also used in unit tests)
//                     | <--   +NetworkStackAppDefaults  --> |
//                     |          (APK build params)         |
//                     |                                     |
//                     | <-- +NetworkStackApiStableLevel     | <-- +NetworkStackApiCurrentLevel
//                     |                                     |
//                     |                                     |
//           NetworkStackApiStable          NetworkStack, InProcessNetworkStack, <-- output APKs
//                                                    TestNetworkStack

// Common defaults to define SDK level
java_defaults {
    name: "NetworkStackApiCurrentLevel",
    sdk_version: "system_current",
    min_sdk_version: "28",
}

java_defaults {
    name: "NetworkStackApiStableLevel",
    sdk_version: "system_current", // TODO: change to system_29
    min_sdk_version: "28",
}

// Java libraries for the API shims
filegroup {
    name: "NetworkStackApiCurrentShims",
    srcs: [
        "apishim/current/**/*.java"
    ],
}

filegroup {
    name: "NetworkStackApiStableShims",
    srcs: [
        "apishim/29/**/*.java"
    ],
}

// Common defaults for android libraries containing network stack code, used to compile variants of
// the network stack in the system process and in the network_stack process
java_defaults {
    name: "NetworkStackAndroidLibraryDefaults",
    srcs: [
        "src/**/*.java",
        ":framework-networkstack-shared-srcs",
        ":services-networkstack-shared-srcs",
        ":statslog-networkstack-java-gen",
    ],
    static_libs: [
        "androidx.annotation_annotation",
        "ipmemorystore-client",
        "netd_aidl_interface-V2-java",
        "networkstack-aidl-interfaces-V3-java",
        "datastallprotosnano",
        "networkstackprotosnano",
        "captiveportal-lib",
    ],
    manifest: "AndroidManifestBase.xml",
}

// The versions of the android library containing network stack code compiled for each SDK variant
android_library {
    name: "NetworkStackApiCurrentLib",
    defaults: ["NetworkStackApiCurrentLevel", "NetworkStackAndroidLibraryDefaults"],
    srcs: [
        ":NetworkStackApiCurrentShims",
    ],
}

android_library {
    name: "NetworkStackApiStableLib",
    defaults: ["NetworkStackApiStableLevel", "NetworkStackAndroidLibraryDefaults"],
    srcs: [
        ":NetworkStackApiStableShims",
    ],
}

// Common defaults for compiling the actual APK, based on the NetworkStackApiXBase android libraries
java_defaults {
    name: "NetworkStackAppDefaults",
    privileged: true,
    jni_libs: [
        "libnativehelper_compat_libc++",
        "libnetworkstackutilsjni",
    ],
    // Resources already included in NetworkStackBase
    resource_dirs: [],
    jarjar_rules: "jarjar-rules-shared.txt",
    use_embedded_native_libs: true,
    optimize: {
        proguard_flags_files: ["proguard.flags"],
    },
}

// Non-updatable network stack running in the system server process for devices not using the module
android_app {
    name: "InProcessNetworkStack",
    defaults: [ "NetworkStackAppDefaults", "NetworkStackApiCurrentLevel"],
    static_libs: ["NetworkStackApiCurrentLib"],
    certificate: "platform",
    manifest: "AndroidManifest_InProcess.xml",
    // InProcessNetworkStack is a replacement for NetworkStack
    overrides: ["NetworkStack"],
    // The permission configuration *must* be included to ensure security of the device
    // The InProcessNetworkStack goes together with the PlatformCaptivePortalLogin, which replaces
    // the default CaptivePortalLogin.
    required: ["PlatformNetworkPermissionConfig", "PlatformCaptivePortalLogin"],
}

// Updatable network stack packaged as an application
android_app {
    name: "NetworkStack",
    defaults: ["NetworkStackAppDefaults", "NetworkStackApiCurrentLevel"],
    static_libs: ["NetworkStackApiCurrentLib"],
    certificate: "networkstack",
    manifest: "AndroidManifest.xml",
    // The permission configuration *must* be included to ensure security of the device
    required: ["NetworkPermissionConfig"],
}

// Updatable network stack for finalized API
android_app {
    name: "NetworkStackApiStable",
    defaults: ["NetworkStackAppDefaults", "NetworkStackApiStableLevel"],
    static_libs: ["NetworkStackApiStableLib"],
    certificate: "networkstack",
    manifest: "AndroidManifest.xml",
    // The permission configuration *must* be included to ensure security of the device
    required: ["NetworkPermissionConfig"],
}

// Android library to derive test APKs for integration tests
android_library {
    name: "TestNetworkStackLib",
    defaults: ["NetworkStackAppDefaults", "NetworkStackApiCurrentLevel"],
    static_libs: ["NetworkStackApiCurrentLib"],
    manifest: "AndroidManifest.xml",
}

cc_library_shared {
    name: "libnetworkstackutilsjni",
    srcs: [
        "jni/network_stack_utils_jni.cpp"
    ],
    sdk_version: "current",
    shared_libs: [
        "liblog",
        "libnativehelper_compat_libc++",
    ],

    // We cannot use plain "libc++" here to link libc++ dynamically because it results in:
    //   java.lang.UnsatisfiedLinkError: dlopen failed: library "libc++_shared.so" not found
    // even if "libc++" is added into jni_libs below. Adding "libc++_shared" into jni_libs doesn't
    // build because soong complains of:
    //   module NetworkStack missing dependencies: libc++_shared
    //
    // So, link libc++ statically. This means that we also need to ensure that all the C++ libraries
    // we depend on do not dynamically link libc++. This is currently the case, because liblog is
    // C-only and libnativehelper_compat_libc also uses stl: "c++_static".
    //
    // TODO: find a better solution for this in R.
    stl: "c++_static",
    cflags: [
        "-Wall",
        "-Werror",
        "-Wno-unused-parameter",
    ],
}

genrule {
    name: "statslog-networkstack-java-gen",
    tools: ["stats-log-api-gen"],
    cmd: "$(location stats-log-api-gen) --java $(out) --module network_stack" +
         " --javaPackage com.android.networkstack.metrics --javaClass NetworkStackStatsLog",
    out: ["com/android/networkstack/metrics/NetworkStackStatsLog.java"],
}

genrule {
    name: "NetworkStackTestAndroidManifest",
    srcs: ["AndroidManifest.xml"],
    out: ["TestAndroidManifest.xml"],
    cmd: "sed 's/versionCode=\".*\"/versionCode=\"300000000\"/' $(in) > $(out)",
}

android_app {
    name: "TestNetworkStack",
    defaults: ["NetworkStackAppDefaults", "NetworkStackApiCurrentLevel"],
    static_libs: ["NetworkStackApiCurrentLib"],
    certificate: "networkstack",
    manifest: ":NetworkStackTestAndroidManifest",
    // The permission configuration *must* be included to ensure security of the device
    required: ["NetworkPermissionConfig"],
}