#!/bin/bash
#DivestOS: A privacy focused mobile distribution
#Copyright (c) 2015-2020 Divested Computing Group
#
#This program is free software: you can redistribute it and/or modify
#it under the terms of the GNU General Public License as published by
#the Free Software Foundation, either version 3 of the License, or
#(at your option) any later version.
#
#This program is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#GNU General Public License for more details.
#
#You should have received a copy of the GNU General Public License
#along with this program.  If not, see <https://www.gnu.org/licenses/>.

#Last verified: 2018-04-27

#Initialize aliases
#source ../../Scripts/init.sh

#Delete Everything and Sync
#resetWorkspace

#Apply all of our changes
#patchWorkspace

#Build!
#buildDevice [device]
#buildAll

#
#START OF PREPRATION
#
#Download some (non-executable) out-of-tree files for use later on
cd "$DOS_TMP_DIR";
if [ "$DOS_HOSTS_BLOCKING" = true ]; then $DOS_TOR_WRAPPER wget "$DOS_HOSTS_BLOCKING_LIST" -N; fi;
cd "$DOS_BUILD_BASE";

#Accept all SDK licences, not normally needed but Gradle managed apps fail without it
mkdir -p "$ANDROID_HOME/licenses";
echo -e "\n8933bad161af4178b1185d1a37fbf41ea5269c55\nd56f5187479451eabf01fb78af6dfcb131a6481e" > "$ANDROID_HOME/licenses/android-sdk-license";
echo -e "\n84831b9409646a918e30573bab4c9c91346d8abd" > "$ANDROID_HOME/licenses/android-sdk-preview-license";
#
#END OF PREPRATION
#

#
#START OF ROM CHANGES
#

#top dir
cp -r "$DOS_PREBUILT_APPS""Fennec_DOS-Shim" "$DOS_BUILD_BASE""packages/apps/"; #Add a shim to install Fennec DOS without actually including the large APK
gpgVerifyDirectory "$DOS_PREBUILT_APPS""android_vendor_FDroid_PrebuiltApps/packages";
cp -r "$DOS_PREBUILT_APPS""android_vendor_FDroid_PrebuiltApps/." "$DOS_BUILD_BASE""vendor/fdroid_prebuilt/"; #Add the prebuilt apps
cp -r "$DOS_PATCHES_COMMON""android_vendor_divested/." "$DOS_BUILD_BASE""vendor/divested/"; #Add our vendor files

enterAndClear "bionic";
if [ "$DOS_GRAPHENE_MALLOC" = true ]; then patch -p1 < "$DOS_PATCHES/android_bionic/0001-HM-Use_HM.patch"; fi; #(GrapheneOS)

enterAndClear "bootable/recovery";
git revert --no-edit eb98fde70a6e54a25408eb8c626caecf7841c5df; #remove sideload cache, breaks with large files
git revert --no-edit ac258a4f4c4b4b91640cc477ad1ac125f206db02; #Resurrect dm-verity
sed -i 's/!= 2048/< 2048/' tools/dumpkey/DumpPublicKey.java; #Allow 4096-bit keys
sed -i 's/(!has_serial_number || serial_number_matched)/!has_serial_number/' recovery.cpp; #Abort on serial number specific packages (GrapheneOS)

enterAndClear "build/make";
patch -p1 < "$DOS_PATCHES_COMMON/android_build/0001-OTA_Keys.patch"; #add correct keys to recovery for OTA verification
awk -i inplace '!/PRODUCT_EXTRA_RECOVERY_KEYS/' core/product.mk;
sed -i '57i$(my_res_package): PRIVATE_AAPT_FLAGS += --auto-add-overlay' core/aapt2.mk;

enterAndClear "device/lineage/sepolicy";
git revert --no-edit 9c28a0dfb91bb468515e123b1aaf3fcfc007b82f; #neverallow violation - breaks backuptool
git revert --no-edit f1ad32105599a0b71702f840b2deeb6849f1ae80; #neverallow violation - breaks addons
git revert --no-edit c9b0d95630b82cd0ad1a0fc633c6d59c2cb8aad7 37422f7df389f3ae5a34ee3d6dd9354217f9c536; #neverallow violation - breaks update_engine

enterAndClear "device/qcom/sepolicy";
patch -p1 < "$DOS_PATCHES/android_device_qcom_sepolicy/0001-Camera_Fix.patch"; #Fix camera on -user builds XXX: REMOVE THIS TRASH

enterAndClear "external/svox";
git revert --no-edit 1419d63b4889a26d22443fd8df1f9073bf229d3d; #Add back Makefiles

enterAndClear "frameworks/av";
if [ "$DOS_GRAPHENE_MALLOC" = true ]; then patch -p1 < "$DOS_PATCHES_COMMON/android_frameworks_av/0001-HM-No_RLIMIT_AS.patch"; fi; #(GrapheneOS)

enterAndClear "frameworks/base";
hardenLocationFWB "$DOS_BUILD_BASE";
sed -i 's/DEFAULT_MAX_FILES = 1000;/DEFAULT_MAX_FILES = 0;/' services/core/java/com/android/server/DropBoxManagerService.java; #Disable DropBox
sed -i 's/DEFAULT_MAX_FILES_LOWRAM = 300;/DEFAULT_MAX_FILES_LOWRAM = 0;/' services/core/java/com/android/server/DropBoxManagerService.java; #Disable DropBox
sed -i 's/(notif.needNotify)/(true)/' location/java/com/android/internal/location/GpsNetInitiatedHandler.java; #Notify user when location is requested via SUPL
sed -i 's/DEFAULT_STRONG_AUTH_TIMEOUT_MS = 72 \* 60 \* 60 \* 1000;/DEFAULT_STRONG_AUTH_TIMEOUT_MS = 12 * 60 * 60 * 1000;/' core/java/android/app/admin/DevicePolicyManager.java; #decrease strong auth prompt timeout
sed -i 's/entry == null/entry == null || true/' core/java/android/os/RecoverySystem.java; #Skip update compatibiltity check XXX: TEMPORARY FIX
if [ "$DOS_MICROG_INCLUDED" = "FULL" ]; then patch -p1 < "$DOS_PATCHES/android_frameworks_base/0002-Signature_Spoofing.patch"; fi; #Allow packages to spoof their signature (microG)
if [ "$DOS_MICROG_INCLUDED" = "FULL" ]; then patch -p1 < "$DOS_PATCHES/android_frameworks_base/0003-Harden_Sig_Spoofing.patch"; fi; #Restrict signature spoofing to system apps signed with the platform key
changeDefaultDNS;
#patch -p1 < "$DOS_PATCHES/android_frameworks_base/0005-Connectivity.patch"; #Change connectivity check URLs to ours
patch -p1 < "$DOS_PATCHES/android_frameworks_base/0006-Disable_Analytics.patch"; #Disable/reduce functionality of various ad/analytics libraries
patch -p1 < "$DOS_PATCHES_COMMON/android_frameworks_base/0001-Browser_No_Location.patch"; #don't grant location permission to system browsers (GrapheneOS)
patch -p1 < "$DOS_PATCHES_COMMON/android_frameworks_base/0003-SUPL_No_IMSI.patch"; #don't send IMSI to SUPL (MSe)
patch -p1 < "$DOS_PATCHES_COMMON/android_frameworks_base/0004-Fingerprint_Lockout.patch"; #enable fingerprint failed lockout after 5 attempts (GrapheneOS)
if [ "$DOS_MICROG_INCLUDED" != "FULL" ]; then rm -rf packages/CompanionDeviceManager; fi; #Used to support Android Wear (which hard depends on GMS)
rm -rf packages/Osu packages/Osu2; #Automatic Wi-Fi connection non-sense
rm -rf packages/PrintRecommendationService; #Creates popups to install proprietary print apps

if [ "$DOS_DEBLOBBER_REMOVE_IMS" = true ]; then
enterAndClear "frameworks/opt/net/ims";
patch -p1 < "$DOS_PATCHES/android_frameworks_opt_net_ims/0001-Fix_Calling.patch"; #Fix calling when IMS is removed
fi

enterAndClear "frameworks/opt/net/wifi";
#Fix an issue when permision review is enabled that prevents using the Wi-Fi quick tile (AndroidHardening)
#See https://github.com/CopperheadOS/platform_frameworks_opt_net_wifi/commit/c2a2f077a902226093b25c563e0117e923c7495b
sed -i 's/boolean mPermissionReviewRequired/boolean mPermissionReviewRequired = false/' service/java/com/android/server/wifi/WifiServiceImpl.java;
awk -i inplace '!/mPermissionReviewRequired = Build.PERMISSIONS_REVIEW_REQUIRED/' service/java/com/android/server/wifi/WifiServiceImpl.java;
awk -i inplace '!/\|\| context.getResources\(\).getBoolean\(/' service/java/com/android/server/wifi/WifiServiceImpl.java;
awk -i inplace '!/com.android.internal.R.bool.config_permissionReviewRequired/' service/java/com/android/server/wifi/WifiServiceImpl.java;

enterAndClear "hardware/qcom/gps";
git apply "$DOS_PATCHES_COMMON/android_hardware_qcom_gps/0001-rollover.patch"; #fix week rollover

if enter "kernel/wireguard"; then
if [ "$DOS_WIREGUARD_INCLUDED" = false ]; then rm Android.mk; fi;
#Remove system information from HTTP requests
awk -i inplace '!/USER_AGENT=/' fetch.sh;
sed -i '3iUSER_AGENT="WireGuard-AndroidROMBuild/0.3"' fetch.sh;
fi;

enterAndClear "lineage-sdk";
awk -i inplace '!/WeatherManagerServiceBroker/' lineage/res/res/values/config.xml; #Disable Weather
if [ "$DOS_DEBLOBBER_REMOVE_AUDIOFX" = true ]; then awk -i inplace '!/LineageAudioService/' lineage/res/res/values/config.xml; fi;

enterAndClear "packages/apps/Contacts";
patch -p1 < "$DOS_PATCHES_COMMON/android_packages_apps_Contacts/0001-No_Google_Links.patch"; #Remove Privacy Policy and Terms of Service links (GrapheneOS)

enterAndClear "packages/apps/LineageParts";
rm -rf src/org/lineageos/lineageparts/lineagestats/ res/xml/anonymous_stats.xml res/xml/preview_data.xml; #Nuke part of the analytics
patch -p1 < "$DOS_PATCHES/android_packages_apps_LineageParts/0001-Remove_Analytics.patch"; #Remove analytics

enterAndClear "packages/apps/Settings";
git revert --no-edit a96df110e84123fe1273bff54feca3b4ca484dcd; #don't hide oem unlock
patch -p1 < "$DOS_PATCHES/android_packages_apps_Settings/0001-Captive_Portal_Toggle.patch"; #Add option to disable captive portal checks (MSe)
patch -p1 < "$DOS_PATCHES/android_packages_apps_Settings/0004-PDB_Fixes.patch"; #Fix crashes when the PersistentDataBlockManager service isn't available
sed -i 's/private int mPasswordMaxLength = 16;/private int mPasswordMaxLength = 48;/' src/com/android/settings/password/ChooseLockPassword.java; #Increase max password length (GrapheneOS)
sed -i 's/if (isFullDiskEncrypted()) {/if (false) {/' src/com/android/settings/accessibility/*AccessibilityService*.java; #Never disable secure start-up when enabling an accessibility service
if [ "$DOS_MICROG_INCLUDED" = "FULL" ]; then sed -i 's/GSETTINGS_PROVIDER = "com.google.settings";/GSETTINGS_PROVIDER = "com.google.oQuae4av";/' src/com/android/settings/PrivacySettings.java; fi; #microG doesn't support Backup, hide the options

enterAndClear "packages/apps/SetupWizard";
patch -p1 < "$DOS_PATCHES/android_packages_apps_SetupWizard/0001-Remove_Analytics.patch"; #Remove analytics

enterAndClear "packages/apps/Updater";
patch -p1 < "$DOS_PATCHES_COMMON/android_packages_apps_Updater/0001-Server.patch"; #Switch to our server
patch -p1 < "$DOS_PATCHES/android_packages_apps_Updater/0002-Tor_Support.patch"; #Add Tor support
#TODO: Remove changelog

enterAndClear "packages/apps/WallpaperPicker";
#TODO: Add back wallpapers
sed -i 's/req.touchEnabled = touchEnabled;/req.touchEnabled = true;/' src/com/android/wallpaperpicker/WallpaperCropActivity.java; #Allow scrolling
sed -i 's/mCropView.setTouchEnabled(req.touchEnabled);/mCropView.setTouchEnabled(true);/' src/com/android/wallpaperpicker/WallpaperCropActivity.java;
sed -i 's/WallpaperUtils.EXTRA_WALLPAPER_OFFSET, 0);/WallpaperUtils.EXTRA_WALLPAPER_OFFSET, 0.5f);/' src/com/android/wallpaperpicker/WallpaperPickerActivity.java; #Center aligned by default

enterAndClear "packages/inputmethods/LatinIME";
patch -p1 < "$DOS_PATCHES_COMMON/android_packages_inputmethods_LatinIME/0001-Voice.patch"; #Remove voice input key

enterAndClear "packages/services/Telephony";
patch -p1 < "$DOS_PATCHES/android_packages_services_Telephony/0001-PREREQ_Handle_All_Modes.patch";
patch -p1 < "$DOS_PATCHES/android_packages_services_Telephony/0002-More_Preferred_Network_Modes.patch";

enterAndClear "system/core";
if [ "$DOS_HOSTS_BLOCKING" = true ]; then cat "$DOS_HOSTS_FILE" >> rootdir/etc/hosts; fi; #Merge in our HOSTS file
git revert --no-edit a6a4ce8e9a6d63014047a447c6bb3ac1fa90b3f4; #Always update recovery
patch -p1 < "$DOS_PATCHES/android_system_core/0001-Harden.patch"; #Harden mounts with nodev/noexec/nosuid + misc sysfs changes (GrapheneOS)
if [ "$DOS_GRAPHENE_MALLOC" = true ]; then patch -p1 < "$DOS_PATCHES_COMMON/android_system_core/0001-HM-Increase_vm_mmc.patch"; fi; #(GrapheneOS)

enterAndClear "system/sepolicy";
patch -p1 < "$DOS_PATCHES/android_system_sepolicy/0001-LGE_Fixes.patch"; #Fix -user builds for LGE devices
patch -p1 < "$DOS_PATCHES/android_system_sepolicy/0001-LGE_Fixes.patch" --directory="prebuilts/api/26.0";

enterAndClear "system/vold";
patch -p1 < "$DOS_PATCHES/android_system_vold/0001-AES256.patch"; #Add a variable for enabling AES-256 bit encryption

enterAndClear "vendor/lineage";
rm build/target/product/security/lineage.x509.pem;
rm -rf overlay/common/lineage-sdk/packages/LineageSettingsProvider/res/values/defaults.xml; #Remove analytics
rm -rf verity_tool; #Resurrect dm-verity
rm -rf overlay/common/frameworks/base/core/res/res/drawable-*/default_wallpaper.png;
if [ "$DOS_HOSTS_BLOCKING" = true ]; then awk -i inplace '!/50-lineage.sh/' config/common.mk; fi; #Make sure our hosts is always used
awk -i inplace '!/PRODUCT_EXTRA_RECOVERY_KEYS/' config/common.mk; #Remove extra keys
awk -i inplace '!/security\/lineage/' config/common.mk; #Remove extra keys
awk -i inplace '!/WeatherProvider/' config/common.mk;
awk -i inplace '!/def_backup_transport/' overlay/common/frameworks/base/packages/SettingsProvider/res/values/defaults.xml;
if [ "$DOS_DEBLOBBER_REMOVE_AUDIOFX" = true ]; then awk -i inplace '!/AudioFX/' config/common.mk; fi;
if [ "$DOS_MICROG_INCLUDED" = "NLP" ]; then sed -i '/Google provider/!b;n;s/com.google.android.gms/org.microg.nlp/' overlay/common/frameworks/base/core/res/res/values/config.xml; fi;
sed -i 's/LINEAGE_BUILDTYPE := UNOFFICIAL/LINEAGE_BUILDTYPE := dos/' config/common.mk; #Change buildtype
if [ "$DOS_NON_COMMERCIAL_USE_PATCHES" = true ]; then sed -i 's/LINEAGE_BUILDTYPE := dos/LINEAGE_BUILDTYPE := dosNC/' config/common.mk; fi;
echo 'include vendor/divested/divestos.mk' >> config/common.mk; #Include our customizations

enter "vendor/divested";
if [ "$DOS_MICROG_INCLUDED" = "FULL" ]; then echo "PRODUCT_PACKAGES += GmsCore GsfProxy FakeStore" >> packages.mk; fi;
if [ "$DOS_HOSTS_BLOCKING" = false ]; then echo "PRODUCT_PACKAGES += $DOS_HOSTS_BLOCKING_APP" >> packages.mk; fi;
#
#END OF ROM CHANGES
#

#
#START OF DEVICE CHANGES
#
enterAndClear "device/asus/flo";
compressRamdisks;
echo "/dev/block/platform/msm_sdcc\.1/by-name/misc u:object_r:misc_block_device:s0" >> sepolicy/file_contexts;

enterAndClear "device/asus/msm8916-common";
rm -rf Android.bp sensors; #already included in asus/flo

enterAndClear "device/google/marlin";
patch -p1 < "$DOS_PATCHES/android_device_google_marlin/0001-Fix_MediaProvider_Deadlock.patch"; #Fix MediaProvider using 100% CPU (due to broken ppoll on functionfs?)

enterAndClear "device/lge/g2-common";
sed -i '3itypeattribute hwaddrs misc_block_device_exception;' sepolicy/hwaddrs.te;

enterAndClear "device/lge/g3-common";
sed -i '3itypeattribute hwaddrs misc_block_device_exception;' sepolicy/hwaddrs.te;
sed -i '1itypeattribute wcnss_service misc_block_device_exception;' sepolicy/wcnss_service.te;
sed -i 's|qcrilmsgtunnel.apk|qcrilmsgtunnel.apk:vendor/priv-app/qcrilmsgtunnel/qcrilmsgtunnel.apk|' proprietary-files.txt; #Fix vendor Android.mk path for qcrilmsgtunnel.apk

enterAndClear "device/lge/msm8996-common";
sed -i '3itypeattribute hwaddrs misc_block_device_exception;' sepolicy/hwaddrs.te;

enterAndClear "device/lge/mako";
git revert --no-edit e277722bb3f10dad7a6078aa0dba7b78738e6071; #restore releasetools
echo "allow kickstart usbfs:dir search;" >> sepolicy/kickstart.te; #Fix forceencrypt on first boot
echo "pmf=0" >> wifi/wpa_supplicant_overlay.conf; #Wi-Fi chipset doesn't support PMF

enterAndClear "device/moto/shamu";
#git revert --no-edit 05fb49518049440f90423341ff25d4f75f10bc0c; #restore releasetools #TODO

enterAndClear "device/oneplus/msm8998-common";
patch -p1 < "$DOS_PATCHES_COMMON/android_device_audio/0001-No_Vorbis_Offload.patch"; #Fix Ogg Vorbis playback

enterAndClear "device/oppo/msm8974-common";
sed -i "s/TZ.BF.2.0-2.0.0134/TZ.BF.2.0-2.0.0134|TZ.BF.2.0-2.0.0137/" board-info.txt; #Suport new TZ firmware https://review.lineageos.org/#/c/178999/

#Make changes to all devices
cd "$DOS_BUILD_BASE";
if [ "$DOS_LOWRAM_ENABLED" = true ]; then find "device" -maxdepth 2 -mindepth 2 -type d -print0 | xargs -0 -n 1 -P 8 -I {} bash -c 'enableLowRam "{}"'; fi;
find "hardware/qcom/gps" -name "gps\.conf" -type f -print0 | xargs -0 -n 1 -P 4 -I {} bash -c 'hardenLocationConf "{}"';
find "device" -name "gps\.conf" -type f -print0 | xargs -0 -n 1 -P 4 -I {} bash -c 'hardenLocationConf "{}"';
find "device" -type d -name "overlay" -print0 | xargs -0 -n 1 -P 4 -I {} bash -c 'hardenLocationFWB "{}"';
find "device" -maxdepth 2 -mindepth 2 -type d -print0 | xargs -0 -n 1 -P 8 -I {} bash -c 'volteOverride "{}"';
find "device" -maxdepth 2 -mindepth 2 -type d -print0 | xargs -0 -n 1 -P 8 -I {} bash -c 'enableDexPreOpt "{}"';
find "device" -maxdepth 2 -mindepth 2 -type d -print0 | xargs -0 -n 1 -P 8 -I {} bash -c 'hardenUserdata "{}"';
find "device" -maxdepth 2 -mindepth 2 -type d -print0 | xargs -0 -n 1 -P 8 -I {} bash -c 'hardenBootArgs "{}"';
if [ "$DOS_STRONG_ENCRYPTION_ENABLED" = true ]; then find "device" -maxdepth 2 -mindepth 2 -type d -print0 | xargs -0 -n 1 -P 8 -I {} bash -c 'enableStrongEncryption "{}"'; fi;
find "kernel" -maxdepth 2 -mindepth 2 -type d -print0 | xargs -0 -n 1 -P 4 -I {} bash -c 'hardenDefconfig "{}"';
cd "$DOS_BUILD_BASE";
deblobAudio;
removeBuildFingerprints;

#Fix broken options enabled by hardenDefconfig()
sed -i "s/CONFIG_DEBUG_RODATA=y/# CONFIG_DEBUG_RODATA is not set/" kernel/google/msm/arch/arm/configs/lineageos_*_defconfig; #Breaks on compile
sed -i "s/CONFIG_DEBUG_RODATA=y/# CONFIG_DEBUG_RODATA is not set/" kernel/google/yellowstone/arch/arm*/configs/*_defconfig; #Breaks on compile
sed -i "s/CONFIG_STRICT_MEMORY_RWX=y/# CONFIG_STRICT_MEMORY_RWX is not set/" kernel/lge/msm8996/arch/arm64/configs/lineageos_*_defconfig; #Breaks on compile
sed -i "s/CONFIG_DEBUG_RODATA=y/# CONFIG_DEBUG_RODATA is not set/" kernel/motorola/msm8974/arch/arm/configs/lineageos_*_defconfig; #Breaks on compile
sed -i "s/CONFIG_STRICT_MEMORY_RWX=y/# CONFIG_STRICT_MEMORY_RWX is not set/" kernel/motorola/msm8996/arch/arm64/configs/*_defconfig; #Breaks on compile
sed -i "s/CONFIG_RANDOMIZE_BASE=y/# CONFIG_RANDOMIZE_BASE is not set/" kernel/samsung/universal9810/arch/arm64/configs/*_defconfig; #Breaks on compile
sed -i "s/CONFIG_STRICT_MEMORY_RWX=y/# CONFIG_STRICT_MEMORY_RWX is not set/" kernel/zte/msm8996/arch/arm64/configs/lineageos_*_defconfig; #Breaks on compile

sed -i 's/YYLTYPE yylloc;/extern YYLTYPE yylloc;/' kernel/*/*/scripts/dtc/dtc-lexer.l*; #Fix builds with GCC 10
rm -v kernel/*/*/drivers/staging/greybus/tools/Android.mk;
#
#END OF DEVICE CHANGES
#