1
0
mirror of https://github.com/j-a-n/raspberrymatic-addon-rmupdate.git synced 2023-10-10 13:37:40 +02:00
raspberrymatic-addon-rmupdate/addon/lib/rmupdate.tcl~
2017-03-24 19:51:51 +01:00

233 lines
6.5 KiB
Tcl

# RaspMatic update addon
#
# Copyright (C) 2017 Jan Schneider <oss@janschneider.net>
#
# 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 <http://www.gnu.org/licenses/>.
#
namespace eval rmu {
variable addon_dir "/usr/local/addons/raspmatic-update"
variable tmp_dir "/usr/local/addons/raspmatic-update/tmp"
variable mnt_cur "/usr/local/addons/raspmatic-update/mnt_cur"
variable mnt_new "/usr/local/addons/raspmatic-update/mnt_new"
variable sys_dev "/dev/mmcblk0"
variable loop_dev "/dev/loop7"
}
proc ::rmu::write_log {str} {
puts stderr $str
#set fd [open "/tmp/rmu.log" "a"]
#puts $fd $str
#close $fd
}
proc ::rmu::version {} {
variable version_file
set fp [open "${addon_dir}/VERSION" r]
set data [read $fp]
close $fp
return [string trim $data]
}
proc ::rmu::get_partion_start_and_size {device partition} {
set data [exec parted $device unit B print]
foreach d [split $data "\n"] {
regexp {^\s*(\d)\s+(\d+)B\s+(\d+)B\s+(\d+)B.*} $d match num start end size
if { [info exists num] && $num == $partition } {
return [list $start $size]
}
}
return [list -1 -1]
}
proc ::rmu::mount_image_partition {image partition mountpoint} {
variable loop_dev
variable sys_dev
write_log "Mounting parition ${partition} of image ${image}."
set p [get_partion_start_and_size $sys_dev $partition]
file mkdir $mountpoint
catch {exec umount "${mountpoint}"}
catch {exec losetup -d $loop_dev}
exec losetup -o [lindex $p 0] $loop_dev "${image}"
exec mount $loop_dev -o ro "${mountpoint}"
}
proc ::rmu::mount_system_partition {partition_or_filesystem mountpoint} {
if {$partition_or_filesystem == 1} {
set partition_or_filesystem "/boot"
} elseif {$partition_or_filesystem == 2} {
set partition_or_filesystem "/"
} elseif {$partition_or_filesystem == 3} {
set partition_or_filesystem "/usr/local"
}
write_log "Remounting filesystem ${partition_or_filesystem} (rw)."
file mkdir $mountpoint
catch {exec umount "${mountpoint}"}
exec mount -o bind $partition_or_filesystem "${mountpoint}"
exec mount -o remount,rw "${mountpoint}"
}
proc ::rmu::umount {device_or_mountpoint} {
exec umount "${device_or_mountpoint}"
}
proc ::rmu::get_filesystem_size_and_usage {device_or_mountpoint} {
set data [exec df]
foreach d [split $data "\n"] {
regexp {^(\S+)\s+\d+\s+(\d+)\s+(\d+)\s+\d+%\s(\S+)\s*$} $d match device used available mountpoint
if { [info exists device] } {
if {$device == $device_or_mountpoint || $mountpoint == $device_or_mountpoint} {
return [list [expr {$used*1024+$available*1024}] [expr {$used*1024}]]
}
}
}
return [list -1 -1]
}
proc ::rmu::check_sizes {image} {
variable mnt_new
variable mnt_cur
write_log "Checking size of filesystems."
file mkdir $mnt_new
file mkdir $mnt_cur
foreach partition [list 1 2] {
mount_image_partition $image $partition $mnt_new
mount_system_partition $partition $mnt_cur
set su_new [get_filesystem_size_and_usage $mnt_new]
set new_used [lindex $su_new 1]
set su_cur [get_filesystem_size_and_usage $mnt_cur]
set cur_size [lindex $su_cur 0]
write_log "Current filesystem (${partition}) size: ${cur_size}, new filesystem used bytes: ${new_used}."
umount $mnt_new
umount $mnt_cur
# Minimum free space 100 MB
if { [expr {$new_used+100*1024*1024}] >= $cur_size } {
error "Current filesystem of partition $partition (${cur_size} bytes) not big enough (new usage: ${new_used} bytes)."
}
}
}
proc ::rmu::update_filesystems {image} {
variable mnt_new
variable mnt_cur
write_log "Updating filesystems."
file mkdir $mnt_new
file mkdir $mnt_cur
foreach partition [list 1 2] {
write_log "Updating partition ${partition}."
mount_image_partition $image $partition $mnt_new
mount_system_partition $partition $mnt_cur
write_log "Rsyncing filesystem."
set data [exec rsync --progress --archive --delete "${mnt_new}/" "${mnt_cur}"]
umount $mnt_new
umount $mnt_cur
}
}
proc ::rmu::get_latest_firmware_download_url {} {
set data [exec wget "https://github.com/jens-maus/RaspberryMatic/releases/latest" --no-check-certificate -q -O-]
foreach d [split $data "\n"] {
set href ""
regexp {<\s*a\s+href\s*=\s*"([^"]+/releases/download/[^"]+.zip)"} $d match href
if { [info exists href] && $href != ""} {
return "https://github.com${href}"
}
}
error "Failed to get latest firmware download url"
}
proc ::rmu::download_latest_firmware {} {
variable tmp_dir
set download_url [get_latest_firmware_download_url]
write_log "Downloading latest firmware from ${download_url}."
regexp {/([^/]+)$} $download_url match archive_file
set archive_file "${tmp_dir}/${archive_file}"
file mkdir $tmp_dir
exec wget "${download_url}" --no-check-certificate -q --output-document=$archive_file
return $archive_file
}
proc ::rmu::get_latest_firmware_version {} {
set download_url [get_latest_firmware_download_url]
regexp {\-([\d\.]+).zip$} $download_url match latest_version
return $latest_version
}
proc ::rmu::get_current_firmware_version {} {
set fp [open "/boot/VERSION" r]
set data [read $fp]
close $fp
regexp {\s*VERSION\s*=s*([\d\.]+)\s*$} $data match current_version
return $current_version
}
proc ::rmu::is_firmware_up_to_date {} {
set latest_version [get_latest_firmware_version]
write_log "Latest firmware version: ${latest_version}"
set current_version [get_current_firmware_version]
write_log "Current firmware version: ${current_version}"
if {[string compare $current_version $latest_version] >= 0} {
return 1
}
return 0
}
rmu::download_latest_firmware
#puts [rmu::is_firmware_up_to_date]
#puts [rmu::get_latest_firmware_download_url]
#rmu::check_sizes "/usr/local/addons/raspmatic-update/tmp/RaspberryMatic-2.27.7.20170316.img"
#set res [rmu::get_partion_start_and_size "/dev/mmcblk0" 1]
#rmu::mount_image_partition "/usr/local/addons/raspmatic-update/tmp/RaspberryMatic-2.27.7.20170316.img" 1 $rmu::mnt_new
#rmu::umount $rmu::mnt_new
#rmu::mount_system_partition "/boot" $rmu::mnt_cur
#rmu::umount $rmu::mnt_cur