390 lines
12 KiB
Bash
Executable file
390 lines
12 KiB
Bash
Executable file
#!/bin/sh
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# Copyright 2017-2020 Stan Grishin (stangri@melmac.net)
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# shellcheck disable=SC2039,SC1091
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readonly devices_dir="/usr/share/advanced-reboot/devices/"
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. /lib/functions.sh
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. /usr/share/libubox/jshn.sh
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logger() { /usr/bin/logger -t advanced-reboot "$1"; }
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is_alt_mountable() {
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local p1_mtd="$1" p2_mtd="$2"
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if [ "${p1_mtd:0:3}" = "mtd" ] && [ "${p2_mtd:0:3}" = "mtd" ] && \
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[ -x "/usr/sbin/ubiattach" ] && \
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[ -x "/usr/sbin/ubiblock" ] && \
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[ -x "/bin/mount" ]; then
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return 0
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else
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return 1
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fi
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}
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alt_partition_mount() {
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local ubi_dev op_ubi="$1"
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for i in alt_rom alt_overlay firmware; do [ ! -d "$i" ] && mkdir -p "/alt/${i}"; done
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ubi_dev="$(ubiattach -m "$op_ubi")"
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ubi_dev="$(echo "$ubi_dev" | sed -n "s/^UBI device number\s*\(\d*\),.*$/\1/p")"
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if [ -z "$ubi_dev" ]; then
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ubidetach -m "$op_ubi"
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return 1
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fi
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ubiblock --create "/dev/ubi${ubi_dev}_0"
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mount -t squashfs -o ro "/dev/ubiblock${ubi_dev}_0" /alt/alt_rom
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mount -t ubifs "/dev/ubi${ubi_dev}_0" /alt/alt_overlay
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# mount -t overlay overlay -o noatime,lowerdir=/alt/rom,upperdir=/alt/overlay/upper,workdir=/alt/overlay/work /alt/firmware
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}
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alt_partition_unmount() {
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local mtdCount i=0 op_ubi="$1"
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mtdCount="$(ubinfo | grep 'Present UBI devices' | tr ',' '\n' | grep -c 'ubi')"
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[ -z "$mtdCount" ] && mtdCount=10
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# [ -d /alt/firmware ] && umount /alt/firmware
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[ -d /alt/alt_overlay ] && umount /alt/alt_overlay
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[ -d /alt/alt_rom ] && umount /alt/alt_rom
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while [ "$i" -le "$mtdCount" ]; do
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if [ ! -e "/sys/devices/virtual/ubi/ubi${i}/mtd_num" ]; then
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break
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fi
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ubi_mtd="$(cat /sys/devices/virtual/ubi/ubi${i}/mtd_num)"
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if [ -n "$ubi_mtd" ] && [ "$ubi_mtd" = "$op_ubi" ]; then
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ubiblock --remove /dev/ubi${i}_0
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ubidetach -m "$op_ubi"
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rm -rf /alt
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fi
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i=$((i + 1))
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done
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}
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get_main_partition_os_info(){
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local cp_info
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if [ -s "/etc/os-release" ]; then
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cp_info="$(. /etc/os-release && echo "$PRETTY_NAME")"
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if [ "${cp_info//SNAPSHOT}" != "$cp_info" ]; then
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cp_info="$(. /etc/os-release && echo "${OPENWRT_RELEASE%%-*}")"
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fi
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fi
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echo "$cp_info"
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}
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get_alt_partition_os_info(){
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local op_info op_ubi="$1"
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logger "attempting to mount alternative partition (mtd${op_ubi})"
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alt_partition_unmount "$op_ubi"
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alt_partition_mount "$op_ubi"
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if [ -s "/alt/alt_rom/etc/os-release" ]; then
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op_info="$(. /alt/alt_rom/etc/os-release && echo "$PRETTY_NAME")"
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if [ "${op_info//SNAPSHOT}" != "$op_info" ]; then
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op_info="$(. /alt/alt_rom/etc/os-release && echo "${OPENWRT_RELEASE%%-*}")"
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fi
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fi
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logger "attempting to unmount alternative partition (mtd${op_ubi})"
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alt_partition_unmount "$op_ubi"
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echo "$op_info"
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}
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find_device_data(){
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local boardNames filename i romBoardName="$1"
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for filename in "${devices_dir}"*.json; do
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[ "$filename" = "${devices_dir}*.json" ] && return
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json_load_file "$filename"
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json_get_values boardNames 'boardNames'
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json_cleanup
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for i in $boardNames; do
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if [ "$i" = "$romBoardName" ]; then
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echo "$filename"
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return
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fi
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done
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done
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}
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print_json() { json_init; json_add_string "$1" "$2"; json_dump; json_cleanup; }
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obtain_device_info(){
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local romBoardName p zyxelFlagPartition
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local vendorName deviceName partition1MTD partition2MTD labelOffset
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local bootEnv1 bootEnv1Partition1Value bootEnv1Partition2Value
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local bootEnv2 bootEnv2Partition1Value bootEnv2Partition2Value
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local p1_label p1_version p2_label p2_version p1_os p2_os
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local current_partition op_ubi cp_info op_info
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romBoardName="$(cat /tmp/sysinfo/board_name)"
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if [ -z "$romBoardName" ]; then
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print_json 'error' 'NO_BOARD_NAME'
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return
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fi
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p="$(find_device_data "$romBoardName")"
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if [ -z "$p" ] || [ ! -s "$p" ]; then
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print_json 'rom_board_name' "$romBoardName"
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return
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fi
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json_load_file "$p"
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for i in vendorName deviceName partition1MTD partition2MTD labelOffset \
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bootEnv1 bootEnv1Partition1Value bootEnv1Partition2Value \
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bootEnv2 bootEnv2Partition1Value bootEnv2Partition2Value; do
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json_get_var $i "$i"
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done
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json_cleanup
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if [ -n "$labelOffset" ]; then
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if [ -n "$partition1MTD" ]; then
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p1_label="$(dd if="/dev/${partition1MTD}" bs=1 skip="${labelOffset}" count=64 2>/dev/null)"
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if [ -n "$p1_label" ]; then
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p1_version="$(echo "$p1_label" | sed -n "s/\(.*\)Linux-\([0-9.]\+\).*$/\2/p")"
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if [ "${p1_label//LEDE}" != "$p1_label" ]; then p1_os="LEDE"; fi
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if [ "${p1_label//OpenWrt}" != "$p1_label" ]; then p1_os="OpenWrt"; fi
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if [ -n "$vendorName" ] && [ "${p1_label//$vendorName}" != "$p1_label" ]; then
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p1_os="$vendorName"
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fi
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fi
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if [ -z "$p1_os" ]; then
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p1_os="${vendorName:-Unknown}/Unknown"
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fi
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fi
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if [ -n "$partition2MTD" ]; then
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p2_label="$(dd if="/dev/${partition2MTD}" bs=1 skip="${labelOffset}" count=64 2>/dev/null)"
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if [ -n "$p2_label" ]; then
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p2_version="$(echo "$p2_label" | sed -n "s/\(.*\)Linux-\([0-9.]\+\).*$/\2/p")"
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if [ "${p2_label//LEDE}" != "$p2_label" ]; then p2_os="LEDE"; fi
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if [ "${p2_label//OpenWrt}" != "$p2_label" ]; then p2_os="OpenWrt"; fi
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if [ -n "$vendorName" ] && [ "${p2_label//$vendorName}" != "$p2_label" ]; then
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p2_os="$vendorName"
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fi
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fi
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if [ -z "$p2_os" ]; then
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p2_os="${vendorName:-Unknown}/Unknown"
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fi
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fi
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else
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p1_os="${vendorName}/Unknown (Compressed)"
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p2_os="${vendorName}/Unknown (Compressed)"
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fi
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if [ -n "$bootEnv1" ]; then
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if [ -x "/usr/sbin/fw_printenv" ] && [ -x "/usr/sbin/fw_setenv" ]; then
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current_partition="$(/usr/sbin/fw_printenv -n "${bootEnv1}")"
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fi
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else
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if [ -z "$zyxelFlagPartition" ]; then
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zyxelFlagPartition="$(find_mtd_part 0:DUAL_FLAG 2>/dev/null)"
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fi
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if [ -n "$zyxelFlagPartition" ]; then
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current_partition="$(dd if="${zyxelFlagPartition}" bs=1 count=1 2>/dev/null | hexdump -n 1 -e '1/1 "%d"')"
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else
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print_json 'error' 'NO_DUAL_FLAG'
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logger "Unable to find Dual Boot Environment or Dual Boot Flag Partition."
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return
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fi
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fi
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if is_alt_mountable "$partition1MTD" "$partition2MTD"; then
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if [ "$current_partition" = "$bootEnv1Partition1Value" ]; then
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op_ubi=$(( ${partition2MTD:3:3} + 1 ))
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else
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op_ubi=$(( ${partition1MTD:3:3} + 1 ))
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fi
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cp_info="$(get_main_partition_os_info $op_ubi)"
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op_info="$(get_alt_partition_os_info $op_ubi)"
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if [ "$current_partition" = "$bootEnv1Partition1Value" ]; then
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p1_os="${cp_info:-$p1_os}"
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p2_os="${op_info:-$p2_os}"
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else
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p1_os="${op_info:-$p1_os}"
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p2_os="${cp_info:-$p2_os}"
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fi
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fi
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if [ -n "$p1_os" ] && [ -n "$p1_version" ]; then
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p1_os="$p1_os (Linux ${p1_version})"
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fi
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if [ -n "$p2_os" ] && [ -n "$p2_version" ]; then
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p2_os="$p2_os (Linux ${p2_version})"
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fi
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json_init
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json_add_int 'current_partition' "$current_partition"
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json_add_string 'device_name' "$vendorName $deviceName"
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json_add_array 'partitions'
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json_add_object
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if [ "$bootEnv1Partition1Value" = "$current_partition" ]; then
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json_add_string 'state' "Current"
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else
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json_add_string 'state' "Alternative"
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fi
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json_add_string 'os' "$p1_os"
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json_add_int 'number' "$bootEnv1Partition1Value"
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json_close_object
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json_add_object
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if [ "$bootEnv1Partition2Value" = "$current_partition" ]; then
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json_add_string 'state' "Current"
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else
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json_add_string 'state' "Alternative"
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fi
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json_add_string 'os' "$p2_os"
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json_add_int 'number' "$bootEnv1Partition2Value"
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json_close_object
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json_close_array
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json_add_string 'rom_board_name' "$romBoardName"
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json_dump; json_cleanup;
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}
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toggle_boot_partition(){
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local zyxelFlagPartition zyxelBootFlag zyxelNewBootFlag curEnvSetting newEnvSetting
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local romBoardName p
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local bev1 bev2 bev1p1 bev1p2 bev2p1 bev2p2
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local vendorName deviceName partition1MTD partition2MTD labelOffset
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local bootEnv1 bootEnv1Partition1Value bootEnv1Partition2Value
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local bootEnv2 bootEnv2Partition1Value bootEnv2Partition2Value
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romBoardName="$(cat /tmp/sysinfo/board_name)"
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if [ -z "$romBoardName" ]; then
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print_json 'error' 'NO_BOARD_NAME'
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return
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fi
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p="$(find_device_data "$romBoardName")"
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if [ -z "$p" ] || [ ! -s "$p" ]; then
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print_json 'rom_board_name' "$romBoardName"
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return
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fi
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json_load_file "$p"
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for i in vendorName deviceName partition1MTD partition2MTD labelOffset \
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bootEnv1 bootEnv1Partition1Value bootEnv1Partition2Value \
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bootEnv2 bootEnv2Partition1Value bootEnv2Partition2Value; do
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json_get_var $i "$i"
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done
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json_cleanup
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bev1="$bootEnv1"
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bev2="$bootEnv2"
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if [ -n "${bev1}${bev2}" ]; then # Linksys devices
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if [ -n "$bev1" ]; then
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curEnvSetting="$(fw_printenv -n "${bev1}")"
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if [ -z "$curEnvSetting" ]; then
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logger "$(printf "Unable to obtain firmware environment variable: %s." "$bev1")"
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json_init
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json_add_string 'error' 'NO_FIRM_ENV'
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json_add_array 'args'
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json_add_string "$bev1"
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json_close_array
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json_add_string 'rom_board_name' "$romBoardName"
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json_dump; json_cleanup;
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return
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else
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bev1p1="$bootEnv1Partition1Value"
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bev1p2="$bootEnv1Partition2Value"
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if [ "$curEnvSetting" = "$bev1p1" ]; then
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newEnvSetting="$bev1p2"
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else
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newEnvSetting="$bev1p1"
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fi
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if ! fw_setenv "$bev1" "$newEnvSetting"; then
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logger "$(printf "Unable to set firmware environment variable: %s to %s." "$bev1" "$newEnvSetting")"
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json_init
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json_add_string 'error' 'ERR_SET_ENV'
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json_add_array 'args'
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json_add_string "$bev1"
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json_add_string "$newEnvSetting"
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json_close_array
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json_add_string 'rom_board_name' "$romBoardName"
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json_dump; json_cleanup;
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return
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fi
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fi
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fi
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if [ -n "$bev2" ]; then
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curEnvSetting="$(fw_printenv -n "${bev2}")"
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if [ -z "$curEnvSetting" ]; then
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logger "$(printf "Unable to obtain firmware environment variable: %s." "$bev2")"
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json_init
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json_add_string 'error' 'NO_FIRM_ENV'
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json_add_array 'args'
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json_add_string "$bev2"
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json_close_array
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json_add_string 'rom_board_name' "$romBoardName"
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json_dump; json_cleanup;
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return
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else
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bev2p1="$bootEnv2Partition1Value"
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bev2p2="$bootEnv2Partition2Value"
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if [ "$curEnvSetting" = "$bev2p1" ]; then
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newEnvSetting="$bev2p2"
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else
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newEnvSetting="$bev2p1"
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fi
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if ! fw_setenv "$bev2" "$newEnvSetting"; then
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logger "$(printf "Unable to set firmware environment variable: %s to %s." "$bev2" "$newEnvSetting")"
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json_init
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json_add_string 'error' 'ERR_SET_ENV'
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json_add_array 'args'
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json_add_string "$bev2"
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json_add_string "$newEnvSetting"
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json_close_array
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json_add_string 'rom_board_name' "$romBoardName"
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json_dump; json_cleanup;
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return
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fi
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fi
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fi
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json_init
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json_dump; json_cleanup;
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else # NetGear device
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if [ -z "$zyxelFlagPartition" ]; then
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zyxelFlagPartition="$(find_mtd_part 0:DUAL_FLAG 2>/dev/null)"
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fi
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if [ -z "$zyxelFlagPartition" ]; then
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logger "Unable to find Dual Boot Flag Partition."
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print_json 'error' 'NO_DUAL_FLAG'
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return
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else
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zyxelBootFlag="$(dd if="${zyxelFlagPartition}" bs=1 count=1 2>/dev/null | hexdump -n 1 -e '1/1 "%d"')"
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if [ "$zyxelBootFlag" = "1" ]; then
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zyxelNewBootFlag="\\xff"
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else
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zyxelNewBootFlag="\\x01"
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fi
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if [ -n "$zyxelNewBootFlag" ]; then
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if ! printf "%b" "$zyxelNewBootFlag" > "$zyxelFlagPartition"; then
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logger "$(printf "Unable to set Dual Boot Flag Partition entry for partition: %s." "$zyxelFlagPartition")"
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json_init
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json_add_string 'error' 'ERR_SET_DUAL_FLAG'
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json_add_array 'args'
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json_add_string "$zyxelFlagPartition"
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json_close_array
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json_add_string 'rom_board_name' "$romBoardName"
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json_dump; json_cleanup;
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return
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fi
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fi
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fi
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json_init
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json_dump; json_cleanup;
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fi
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}
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case "$1" in
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list)
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json_init
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json_add_object "obtain_device_info"
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json_close_object
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json_add_object "toggle_boot_partition"
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json_close_object
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json_dump
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json_cleanup
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;;
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call)
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case "$2" in
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obtain_device_info)
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obtain_device_info;;
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toggle_boot_partition)
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toggle_boot_partition;;
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esac
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;;
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esac
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