#!/bin/bash

# Copyright (C) 2023 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.

if [ $# -ne 2 ]; then
    echo "Usage: $0 <top> <ver>"
    exit 1
fi

top=$1
ver=$2

prebuilt_dir=$top/system/sepolicy/prebuilts/api/$ver
mkdir -p "$prebuilt_dir"
cp -r "$top/system/sepolicy/public/" "$prebuilt_dir"
cp -r "$top/system/sepolicy/private/" "$prebuilt_dir"

cat > "$prebuilt_dir/Android.bp" <<EOF
// Automatically generated file, do not edit!
se_policy_conf {
    name: "${ver}_reqd_policy_mask.conf",
    defaults: ["se_policy_conf_flags_defaults"],
    srcs: reqd_mask_policy,
    installable: false,
    build_variant: "user",
    board_api_level: "${ver}",
}

se_policy_cil {
    name: "${ver}_reqd_policy_mask.cil",
    src: ":${ver}_reqd_policy_mask.conf",
    secilc_check: false,
    installable: false,
}

se_policy_conf {
    name: "${ver}_plat_pub_policy.conf",
    defaults: ["se_policy_conf_flags_defaults"],
    srcs: [
        ":se_build_files{.plat_public_${ver}}",
        ":se_build_files{.reqd_mask}",
    ],
    installable: false,
    build_variant: "user",
    board_api_level: "${ver}",
}

se_policy_cil {
    name: "${ver}_plat_pub_policy.cil",
    src: ":${ver}_plat_pub_policy.conf",
    filter_out: [":${ver}_reqd_policy_mask.cil"],
    secilc_check: false,
    installable: false,
}

se_policy_conf {
    name: "${ver}_product_pub_policy.conf",
    defaults: ["se_policy_conf_flags_defaults"],
    srcs: [
        ":se_build_files{.plat_public_${ver}}",
        ":se_build_files{.system_ext_public_${ver}}",
        ":se_build_files{.product_public_${ver}}",
        ":se_build_files{.reqd_mask}",
    ],
    installable: false,
    build_variant: "user",
    board_api_level: "${ver}",
}

se_policy_cil {
    name: "${ver}_product_pub_policy.cil",
    src: ":${ver}_product_pub_policy.conf",
    filter_out: [":${ver}_reqd_policy_mask.cil"],
    secilc_check: false,
    installable: false,
}

se_versioned_policy {
    name: "${ver}_plat_pub_versioned.cil",
    base: ":${ver}_product_pub_policy.cil",
    target_policy: ":${ver}_product_pub_policy.cil",
    version: "${ver}",
    installable: false,
}

se_policy_conf {
    name: "${ver}_plat_policy.conf",
    defaults: ["se_policy_conf_flags_defaults"],
    srcs: [
        ":se_build_files{.plat_public_${ver}}",
        ":se_build_files{.plat_private_${ver}}",
        ":se_build_files{.system_ext_public_${ver}}",
        ":se_build_files{.system_ext_private_${ver}}",
        ":se_build_files{.product_public_${ver}}",
        ":se_build_files{.product_private_${ver}}",
    ],
    installable: false,
    build_variant: "user",
}

se_policy_cil {
    name: "${ver}_plat_policy.cil",
    src: ":${ver}_plat_policy.conf",
    additional_cil_files: [":sepolicy_technical_debt{.plat_private_${ver}}"],
    installable: false,
}

se_policy_binary {
    name: "${ver}_plat_policy",
    srcs: [":${ver}_plat_policy.cil"],
    installable: false,
    dist: {
        targets: ["base-sepolicy-files-for-mapping"],
    },
}
EOF

# Build general_sepolicy.conf, plat_sepolicy.cil, and mapping file for CTS
DIST_DIR=out/dist $top/build/soong/soong_ui.bash --make-mode dist sepolicy_finalize bpmodify

cp "$top/out/dist/base_plat_sepolicy.cil" "$prebuilt_dir/${ver}_plat_sepolicy.cil"
cp "$top/out/dist/general_sepolicy.conf" "$prebuilt_dir/${ver}_general_sepolicy.conf"
cp "$top/out/dist/$ver.cil" "$prebuilt_dir/${ver}_mapping.cil"

cat >> "$prebuilt_dir/Android.bp" <<EOF

filegroup {
    name: "${ver}_sepolicy_cts_data",
    srcs: [
        "${ver}_general_sepolicy.conf",
        "${ver}_plat_sepolicy.cil",
        "${ver}_mapping.cil",
    ],
}
EOF

bpmodify="$top/out/host/linux-x86/bin/bpmodify"
$bpmodify -a ":${ver}_sepolicy_cts_data" -m prebuilt_sepolicy_cts_data -property srcs -w \
    $top/system/sepolicy/tests/Android.bp
sed -i "s/FREEZE_TEST_BOARD_API_LEVEL = \".\{6\}\"/FREEZE_TEST_BOARD_API_LEVEL = \"${ver}\"/" \
    $top/system/sepolicy/Android.bp