#!/bin/bash #DivestOS: A privacy oriented Android distribution #Copyright (c) 2017-2018 Divested Computing, Inc. # #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 . if [ "$DOS_NON_COMMERCIAL_USE_PATCHES" = true ]; then echo -e "\e[0;33mWARNING: YOU HAVE ENABLED PATCHES THAT WHILE ARE OPEN SOURCE ARE ALSO ENCUMBERED BY RESTRICTIVE LICENSES\e[0m"; echo -e "\e[0;33mPLEASE SEE THE 'LICENSES' FILE AT THE ROOT OF THIS REPOSITORY FOR MORE INFORMATION\e[0m"; echo -e "\e[0;33mDISABLE THEM BY SETTING 'NON_COMMERCIAL_USE_PATCHES' TO 'false' IN 'Scripts/init.sh'\e[0m"; sleep 15; fi; startPatcher() { java -jar "$DOS_BINARY_PATCHER" patch "$DOS_BUILD_BASE" "$DOS_WORKSPACE_ROOT""Patches/" "$DOS_SCRIPTS_CVES" $1; } export -f startPatcher; enter() { echo "================================================================================================" dir="$1"; cd "$DOS_BUILD_BASE$dir"; echo "[ENTERING] $dir"; } export -f enter; enterAndClear() { enter "$1"; gitReset; } export -f enterAndClear; gitReset() { git add -A && git reset --hard; } export -f gitReset; scanForMalware() { if [ -x /usr/bin/clamscan ] && [ -r /var/lib/clamav/main.cvd ]; then echo -e "\e[0;32mStarting a malware scan...\e[0m"; excludes="--exclude-dir=\".git\" --exclude-dir=\".repo\""; scanQueue="$2"; if [ "$1" = true ]; then if [ "$DOS_MALWARE_SCAN_SETTING" != "quick" ] || [ "$DOS_MALWARE_SCAN_SETTING" = "extra" ]; then scanQueue=$scanQueue" $DOS_BUILD_BASE/frameworks $DOS_BUILD_BASE/vendor"; fi; if [ "$DOS_MALWARE_SCAN_SETTING" = "slow" ]; then scanQueue=$scanQueue"$DOS_BUILD_BASE/external $DOS_BUILD_BASE/prebuilts $DOS_BUILD_BASE/toolchain $DOS_BUILD_BASE/tools"; fi; if [ "$DOS_MALWARE_SCAN_SETTING" = "full" ]; then scanQueue="$DOS_BUILD_BASE"; fi; fi; du -hsc "$scanQueue"; /usr/bin/clamscan --recursive --detect-pua --infected "$excludes" "$scanQueue"; clamscanExit="$?"; if [ "$clamscanExit" -eq "1" ]; then echo -e "\e[0;31m----------------------------------------------------------------\e[0m"; echo -e "\e[0;31mWARNING: MALWARE WAS FOUND! PLEASE INVESTIGATE!\e[0m"; echo -e "\e[0;31m----------------------------------------------------------------\e[0m"; sleep 60; fi; if [ "$clamscanExit" -eq "0" ]; then echo -e "\e[0;32mNo malware found\e[0m"; fi; if [ "$clamscanExit" -eq "2" ]; then echo -e "\e[0;33m----------------------------------------------------------------\e[0m"; echo -e "\e[0;33mWARNING: AN ERROR OCCURED. PLEASE INVESTIGATE!\e[0m"; echo -e "\e[0;33m----------------------------------------------------------------\e[0m"; sleep 60; fi; else echo -e "\e[0;33mWARNING: clamscan is unavailable, a malware scan will not be performed!\e[0m"; fi; } export -f scanForMalware; generateBootAnimationMask() { text=$1; font=$2 output=$3; convert -background black -fill transparent -font "$font" -gravity center -size 512x128 label:"$text" "$output"; } export -f generateBootAnimationMask; generateBootAnimationShine() { color=$1; style=$2; output=$3; #The colors need to be symmetrical in order to make the animation smooth and not have any noticble lines convert -size 1024x128 -define gradient:angle=90 "$style":"$color" \( +clone -flop \) +append "$output"; } export -f generateBootAnimationShine; audit2allowCurrent() { adb shell dmesg | audit2allow -p "$ANDROID_PRODUCT_OUT"/root/sepolicy; } export -f audit2allowCurrent; audit2allowADB() { adb pull /sys/fs/selinux/policy; adb logcat -b all -d | audit2allow -p policy; } export -f audit2allowADB; disableDexPreOpt() { cd "$DOS_BUILD_BASE$1"; if [ -f BoardConfig.mk ]; then sed -i "s/WITH_DEXPREOPT := true/WITH_DEXPREOPT := false/" BoardConfig.mk; echo "Disabled dexpreopt"; fi; cd "$DOS_BUILD_BASE"; } export -f disableDexPreOpt; compressRamdisks() { if [ -f BoardConfig.mk ]; then echo "LZMA_RAMDISK_TARGETS := boot,recovery" >> BoardConfig.mk; echo "Enabled ramdisk compression"; fi; } export -f compressRamdisks; enhanceLocation() { cd "$DOS_BUILD_BASE$1"; #Enable GLONASS if [ "$DOS_GLONASS_FORCED_ENABLE" = false ]; then sed -i 's/#A_GLONASS_POS_PROTOCOL_SELECT/A_GLONASS_POS_PROTOCOL_SELECT/' gps.conf gps/gps.conf configs/gps.conf &>/dev/null || true; sed -i 's/A_GLONASS_POS_PROTOCOL_SELECT = 0.*/A_GLONASS_POS_PROTOCOL_SELECT = 15/' gps.conf gps/gps.conf configs/gps.conf &>/dev/null || true; sed -i 's|A_GLONASS_POS_PROTOCOL_SELECT=0.*|A_GLONASS_POS_PROTOCOL_SELECT=15|' overlay/frameworks/base/core/res/res/values-*/*.xml &>/dev/null || true; fi; #Recommended reading: https://wwws.nightwatchcybersecurity.com/2016/12/05/cve-2016-5341/ #XTRA: Only use specified URLs sed -i 's|XTRA_SERVER_QUERY=1|XTRA_SERVER_QUERY=0|' gps.conf gps/gps.conf configs/gps.conf &>/dev/null || true; sed -i 's|#XTRA_SERVER|XTRA_SERVER|' gps.conf gps/gps.conf configs/gps.conf &>/dev/null || true; #XTRA: Enable HTTPS sed -i 's|http://xtra|https://xtra|' overlay/frameworks/base/core/res/res/values-*/*.xml gps.conf gps/gps.conf configs/gps.conf &>/dev/null || true; #XTRA: Use format version 3 if possible if grep -sq "XTRA_VERSION_CHECK" gps.conf gps/gps.conf configs/gps.conf; then #Using hardware/qcom/gps OR precompiled blob OR device specific implementation sed -i 's|XTRA_VERSION_CHECK=0|XTRA_VERSION_CHECK=1|' gps.conf gps/gps.conf configs/gps.conf &>/dev/null || true; sed -i 's|xtra2.bin|xtra3grc.bin|' gps.conf gps/gps.conf configs/gps.conf &>/dev/null || true; elif grep -sq "BOARD_VENDOR_QCOM_LOC_PDK_FEATURE_SET := true" BoardConfig.mk boards/*gps.mk; then if ! grep -sq "USE_DEVICE_SPECIFIC_LOC_API := true" BoardConfig.mk boards/*gps.mk; then if ! grep -sq "libloc" ./*proprietary*.txt; then #Using hardware/qcom/gps sed -i 's|xtra2.bin|xtra3grc.bin|' gps.conf gps/gps.conf configs/gps.conf &>/dev/null || true; fi; fi; fi; echo "Enhanced location services for $1"; cd "$DOS_BUILD_BASE"; } export -f enhanceLocation; enableZram() { cd "$DOS_BUILD_BASE$1"; sed -i 's|#/dev/block/zram0|/dev/block/zram0|' fstab.* root/fstab.* rootdir/fstab.* rootdir/etc/fstab.* &>/dev/null || true; echo "Enabled zram for $1"; cd "$DOS_BUILD_BASE"; } export -f enableZram; enableForcedEncryption() { cd "$DOS_BUILD_BASE$1"; sed -i 's|encryptable=/|forceencrypt=/|' fstab.* root/fstab.* rootdir/fstab.* rootdir/etc/fstab.* &>/dev/null || true; echo "Enabled forceencrypt for $1"; cd "$DOS_BUILD_BASE"; } export -f enableForcedEncryption; enableStrongEncryption() { cd "$DOS_BUILD_BASE$1"; if [ -f BoardConfig.mk ]; then echo "TARGET_WANTS_STRONG_ENCRYPTION := true" >> BoardConfig.mk; echo "Enabled AES-256 encryption for $1"; fi; cd "$DOS_BUILD_BASE"; } export -f enableStrongEncryption; getDefconfig() { if ls arch/arm/configs/lineage*defconfig 1> /dev/null 2>&1; then defconfigPath="arch/arm/configs/lineage*defconfig"; elif ls arch/arm64/configs/lineage*defconfig 1> /dev/null 2>&1; then defconfigPath="arch/arm64/configs/lineage*defconfig"; else defconfigPath="arch/arm/configs/*defconfig arch/arm64/configs/*defconfig"; fi; echo $defconfigPath; #echo "Found defconfig at $defconfigPath" } export -f getDefconfig; changeDefaultDNS() { dnsPrimary=""; dnsPrimaryV6=""; dnsSecondary=""; dnsSecondaryV6=""; if [ -z "$DNS_PRESET" ]; then if [[ "$DOS_DEFAULT_DNS_PRESET" == "Cloudflare" ]]; then #https://developers.cloudflare.com/1.1.1.1/commitment-to-privacy/privacy-policy/privacy-policy/ dnsPrimary="1.0.0.1"; dnsPrimaryV6="2606:4700:4700::1001"; dnsSecondary="1.1.1.1"; dnsSecondaryV6="2606:4700:4700::1111"; elif [[ "$DOS_DEFAULT_DNS_PRESET" == "OpenNIC" ]]; then #https://servers.opennicproject.org/edit.php?srv=ns3.any.dns.opennic.glue dnsPrimary="169.239.202.202"; #RIP dnsPrimaryV6="2a05:dfc7:5353::53"; dnsSecondary="185.121.177.177"; dnsSecondaryV6="2a05:dfc7:5::53"; elif [[ "$DOS_DEFAULT_DNS_PRESET" == "DNSWATCH" ]]; then #https://dns.watch dnsPrimary="84.200.69.80"; dnsPrimaryV6="2001:1608:10:25::1c04:b12f"; dnsSecondary="84.200.70.40"; dnsSecondaryV6="2001:1608:10:25::9249:d69b"; elif [[ "$DOS_DEFAULT_DNS_PRESET" == "Google" ]]; then #https://developers.google.com/speed/public-dns/privacy dnsPrimary="8.8.8.8"; dnsPrimaryV6="2001:4860:4860::8888"; dnsSecondary="8.8.4.4"; dnsSecondaryV6="2001:4860:4860::8844"; elif [[ "$DOS_DEFAULT_DNS_PRESET" == "OpenDNS" ]]; then #https://www.cisco.com/c/en/us/about/legal/privacy-full.html dnsPrimary="208.67.222.222"; dnsPrimaryV6="2620:0:ccc::2"; dnsSecondary="208.67.220.220"; dnsSecondaryV6="2620:0:ccd::2"; elif [[ "$DOS_DEFAULT_DNS_PRESET" == "Quad9" ]]; then #https://www.quad9.net/privacy/ dnsPrimary="9.9.9.9"; dnsPrimaryV6="2620:fe::fe"; dnsSecondary="149.112.112.112"; dnsSecondaryV6="2620:fe::fe"; #no secondary available elif [[ "$DOS_DEFAULT_DNS_PRESET" == "Quad9U" ]]; then #https://www.quad9.net/privacy/ dnsPrimary="9.9.9.10"; dnsPrimaryV6="2620:fe::10"; dnsSecondary="149.112.112.10"; dnsSecondaryV6="2620:fe::10"; #no secondary available elif [[ "$DOS_DEFAULT_DNS_PRESET" == "Verisign" ]]; then #https://www.verisign.com/en_US/security-services/public-dns/terms-of-service/index.xhtml dnsPrimary="64.6.64.6"; dnsPrimaryV6="2620:74:1b::1:1"; dnsSecondary="64.6.65.6"; dnsSecondaryV6="2620:74:1c::2:2"; fi; else echo "You must first set a preset via the DEFAULT_DNS_PRESET variable in init.sh!"; fi; files="core/res/res/values/config.xml packages/SettingsLib/res/values/strings.xml services/core/java/com/android/server/connectivity/NetworkDiagnostics.java services/core/java/com/android/server/connectivity/Tethering.java services/core/java/com/android/server/connectivity/tethering/TetheringConfiguration.java services/java/com/android/server/connectivity/Tethering.java"; sed -i "s/8\.8\.8\.8/$dnsPrimary/" $files &>/dev/null || true; sed -i "s/2001:4860:4860::8888/$dnsPrimaryV6/" $files &>/dev/null || true; sed -i "s/8\.8\.4\.4/$dnsSecondary/" $files &>/dev/null || true; sed -i "s/2001:4860:4860::8844/$dnsSecondaryV6/" $files &>/dev/null || true; } export -f changeDefaultDNS; editKernelLocalversion() { defconfigPath=$(getDefconfig) sed -i 's/CONFIG_LOCALVERSION=".*"/CONFIG_LOCALVERSION="'"$1"'"/' $defconfigPath &>/dev/null || true; } export -f editKernelLocalversion; hardenDefconfig() { cd "$DOS_BUILD_BASE$1"; #Attempts to enable/disable supported options to increase security #See https://kernsec.org/wiki/index.php/Kernel_Self_Protection_Project/Recommended_Settings defconfigPath=$(getDefconfig) #Enable supported options #Disabled: CONFIG_DEBUG_SG (bootloops - https://patchwork.kernel.org/patch/8989981) declare -a optionsYes=("CONFIG_ARM64_SW_TTBR0_PAN" "CONFIG_BUG" "CONFIG_BUG_ON_DATA_CORRUPTION" "CONFIG_CC_STACKPROTECTOR" "CONFIG_CC_STACKPROTECTOR_STRONG" "CONFIG_CPU_SW_DOMAIN_PAN" "CONFIG_DEBUG_CREDENTIALS" "CONFIG_DEBUG_KERNEL" "CONFIG_DEBUG_LIST" "CONFIG_DEBUG_NOTIFIERS" "CONFIG_DEBUG_RODATA" "CONFIG_DEBUG_WX" "CONFIG_FORTIFY_SOURCE" "CONFIG_GCC_PLUGIN_LATENT_ENTROPY" "CONFIG_GCC_PLUGIN_RANDSTRUCT" "CONFIG_GCC_PLUGINS" "CONFIG_GCC_PLUGIN_STRUCTLEAK" "CONFIG_GCC_PLUGIN_STRUCTLEAK_BYREF_ALL" "CONFIG_HARDENED_USERCOPY" "CONFIG_IO_STRICT_DEVMEM" "CONFIG_KAISER" "CONFIG_LEGACY_VSYSCALL_NONE" "CONFIG_PAGE_POISONING" "CONFIG_PAGE_POISONING_NO_SANITY" "CONFIG_PAGE_POISONING_ZERO" "CONFIG_PAGE_TABLE_ISOLATION" "CONFIG_PANIC_ON_OOPS" "CONFIG_RANDOMIZE_BASE" "CONFIG_REFCOUNT_FULL" "CONFIG_RETPOLINE" "CONFIG_SCHED_STACK_END_CHECK" "CONFIG_SECCOMP" "CONFIG_SECCOMP_FILTER" "CONFIG_SECURITY" "CONFIG_SECURITY_PERF_EVENTS_RESTRICT" "CONFIG_SECURITY_YAMA" "CONFIG_SECURITY_YAMA_STACKED" "CONFIG_SLAB_FREELIST_RANDOM" "CONFIG_SLAB_HARDENED" "CONFIG_SLUB_DEBUG" "CONFIG_STRICT_DEVMEM" "CONFIG_STRICT_KERNEL_RWX" "CONFIG_STRICT_MEMORY_RWX" "CONFIG_SYN_COOKIES" "CONFIG_UNMAP_KERNEL_AT_EL0" "CONFIG_VMAP_STACK" "CONFIG_SECURITY_DMESG_RESTRICT" "CONFIG_SLAB_FREELIST_HARDENED" "CONFIG_GCC_PLUGINS" "CONFIG_GCC_PLUGIN_LATENT_ENTROPY" "CONFIG_GCC_PLUGIN_STRUCTLEAK" "CONFIG_GCC_PLUGIN_STRUCTLEAK_BYREF_ALL" "CONFIG_GCC_PLUGIN_RANDSTRUCT" "CONFIG_GCC_PLUGIN_RANDSTRUCT_PERFORMANCE") for option in "${optionsYes[@]}" do sed -i 's/# '"$option"' is not set/'"$option"'=y/' $defconfigPath &>/dev/null || true; #Some defconfigs are very minimal/not-autogenerated, so lets add the rest. Obviously most won't have any affect as they aren't supported. if [[ "$defconfigPath" == *"lineage"* ]]; then if ! grep -q "$option""=y" $defconfigPath; then echo "$option""=y" | tee -a $defconfigPath > /dev/null; fi; fi; done #Disable supported options #TODO: Disable earjack/uart debugger declare -a optionsNo=("CONFIG_ACPI_CUSTOM_METHOD" "CONFIG_BINFMT_MISC" "CONFIG_COMPAT_BRK" "CONFIG_COMPAT_VDSO" "CONFIG_CP_ACCESS64" "CONFIG_DEVKMEM" "CONFIG_DEVMEM" "CONFIG_DEVPORT" "CONFIG_HIBERNATION" "CONFIG_INET_DIAG" "CONFIG_KEXEC" "CONFIG_LEGACY_PTYS" "CONFIG_MSM_BUSPM_DEV" "CONFIG_OABI_COMPAT" "CONFIG_PROC_KCORE" "CONFIG_PROC_VMCORE" "CONFIG_SECURITY_SELINUX_DISABLE" "CONFIG_SLAB_MERGE_DEFAULT" "CONFIG_WLAN_FEATURE_MEMDUMP") for option in "${optionsNo[@]}" do sed -i 's/'"$option"'=y/# '"$option"' is not set/' $defconfigPath &>/dev/null || true; done #Extras sed -i 's/CONFIG_ARCH_MMAP_RND_BITS=8/CONFIG_ARCH_MMAP_RND_BITS=16/' $defconfigPath &>/dev/null || true; sed -i 's/CONFIG_ARCH_MMAP_RND_BITS=18/CONFIG_ARCH_MMAP_RND_BITS=24/' $defconfigPath &>/dev/null || true; sed -i 's/CONFIG_DEFAULT_MMAP_MIN_ADDR=4096/CONFIG_DEFAULT_MMAP_MIN_ADDR=32768/' $defconfigPath &>/dev/null || true; sed -i 's/CONFIG_LSM_MMAP_MIN_ADDR=4096/CONFIG_LSM_MMAP_MIN_ADDR=32768/' $defconfigPath &>/dev/null || true; editKernelLocalversion "-dos"; echo "Hardened defconfig for $1"; cd "$DOS_BUILD_BASE"; } export -f hardenDefconfig;