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#!/bin/bash
########################################################################################################################
# apt-downgrade-src-package-to-official-archive.sh
########################################################################################################################
#
# All rights reserved Ⓒ 2017-2023 sdxlive.com
#
# Written by Jean-Christophe Manciot <jcmanciot@sdxlive.com>
#
# Licensed under a GPLv3 License.
# You may not use this file except in compliance with the License. You may obtain a copy of the License at
#
# https://www.gnu.org/licenses/gpl-3.0.md
#
# The licensor cannot revoke these freedoms as long as you follow the license terms.
#
# Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made.
# You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
#
########################################################################################################################
########################################################################################################################
#
# Downgrading all installed binary packages listed from a source package with a version ending with +<os_version> or
# -<os_version> to the package version provided by the official Debian/Ubuntu repositories.
#
########################################################################################################################
#
# Requirements:
# ------------
#
# - We assume that apt and lsb-release alongside all their dependencies are already installed.
# - We expect that 'deb-src' URIs are set in your sources.list
#
########################################################################################################################
#
# Parameters:
# ----------
#
# - <src_package>: source package from which all binary packages are listed
# - <os_version>: optional binary packages version ending with +<os_version> or -<os_version>
# it defaults to the current OS version.
# For instance:
# * 10|10.0 matches buster Debian distribution
# * 11|11.0 matches bullseye Debian distribution
# * 19.04 matches disco Ubuntu distribution
# * 19.10 matches eoan Ubuntu distribution
# * 20.04 matches focal Ubuntu distribution
# * 20.10 matches groovy Ubuntu distribution
# - <auto>: optional, one of
# * true|yes: the binary packages will be downgraded without any user's confirmation
# Use with caution.
# * false|no: the binary packages will be downgraded only with user's confirmation for each source package
# (default)
# - <hold>: optional, one of
# * true|yes: all installed binary packages are held once they've been downgraded
# (default)
# * false|no: no binary package is held once it has been downgraded
# - <versions_group>: optional, one of
# + positive: downgrading only the subset of binary packages with a version ending with +<os_version>
# + negative: downgrading only the subset of binary packages with a version ending with -<os_version>
# + all: downgrading all binary packages with a version ending with +<os_version> or -<os_version>
# (default)
# - <apt_non_interactive_enabled>: boolean
# * true:
# + debconf/frontend is set to Noninteractive at the beginning of the script then
# + debconf/frontend is set to Dialog at the end of the script
# * false: debconf/frontend is not modified
# (default)
#
#######################################################################################################################
#
# Usage example:
# -------------
#
# apt-downgrade-src-package-to-official-archive.sh util-linux
#
########################################################################################################################
# set -x
src_package=$1
os_version=$2
auto=$3
hold=$4
versions_group=$5
apt_non_interactive_enabled=$6
PARAMETERS_NUMBER=1
case "$#" in
0)
end_of_help_message_line_number=$(awk '/^# set -x/{ print NR; exit }' $(which apt-downgrade-src-package-to-official-archive.sh))
((end_of_help_message_line_number--))
if [[ (-n $(apt-cache -q=0 2>&1 policy zenity | grep Installed)) && (! ($(apt-cache -q=0 2>&1 policy zenity | grep Installed) =~ none)) ]]; then
awk -v var=$end_of_help_message_line_number 'NR >= 2 && NR <= var' $(which apt-downgrade-src-package-to-official-archive.sh) | zenity --text-info --title "apt-downgrade-src-package-to-official-archive.sh help" --width 1350 --height 1000
else
awk -v var=$end_of_help_message_line_number 'NR >= 2 && NR <= var' $(which apt-downgrade-src-package-to-official-archive.sh)
fi
exit 1
;;
$PARAMETERS_NUMBER)
case "$1" in
-h|--help)
end_of_help_message_line_number=$(awk '/^# set -x/{ print NR; exit }' $(which apt-downgrade-src-package-to-official-archive.sh))
((end_of_help_message_line_number--))
if [[ (-n $(apt-cache -q=0 2>&1 policy zenity | grep Installed)) && (! ($(apt-cache -q=0 2>&1 policy zenity | grep Installed) =~ none)) ]]; then
awk -v var=$end_of_help_message_line_number 'NR >= 2 && NR <= var' $(which apt-downgrade-src-package-to-official-archive.sh) | zenity --text-info --title "apt-downgrade-src-package-to-official-archive.sh help" --width 1350 --height 1000
else
awk -v var=$end_of_help_message_line_number 'NR >= 2 && NR <= var' $(which apt-downgrade-src-package-to-official-archive.sh)
fi
exit 1
;;
*)
os_distribution=$(lsb_release -a 2>/dev/null | grep "Distributor ID" | cut -d ':' -f 2)
os_distribution=${os_distribution//[[:space:]]/}
os_version=$(lsb_release -a 2>/dev/null | grep "Release" | cut -d ':' -f 2)
os_version=${os_version//[[:space:]]/}
if [[ ($os_distribution == Debian) && ($os_version =~ testing) ]]; then
os_version='12.0'
fi
auto=false
hold=true
versions_group=all
apt_non_interactive_enabled=false
;;
esac
;;
$((PARAMETERS_NUMBER+1)))
auto=false
hold=true
versions_group=all
apt_non_interactive_enabled=false
;;
$((PARAMETERS_NUMBER+2)))
hold=true
versions_group=all
apt_non_interactive_enabled=false
;;
$((PARAMETERS_NUMBER+3)))
versions_group=all
apt_non_interactive_enabled=false
;;
$((PARAMETERS_NUMBER+4)))
apt_non_interactive_enabled=false
;;
$((PARAMETERS_NUMBER+5)))
;;
*)
echo -e ''$_{1..180}'\b-'
echo Wrong number of parameters: $(basename $0) $@
echo -e ''$_{1..180}'\b-'
exit 1
;;
esac
dpkg-lock.sh apt update
if [[ $apt_non_interactive_enabled == true ]]; then
echo 'debconf debconf/frontend select Noninteractive' | debconf-set-selections
fi
# Installing dependencies needed to play an alert or a completion sound when necessary
dpkg-lock.sh apt -y install alsa-utils emacspeak pidgin-data
# Listing all installed binary packages from <src_package>
unset bin_packages
readarray -t bin_packages < <(apt-list-bin-packages-from-src.sh "$src_package")
unset bin_packages_list
for bin_package in "${bin_packages[@]}"
do
if [[ -n $(apt list --installed 2>/dev/null | grep "$bin_package") ]]; then
if [[ -z "$bin_packages_list" ]]; then
bin_packages_list="^${bin_package}/"
else
bin_packages_list="${bin_packages_list}|^${bin_package}/"
fi
fi
done
# Downgrading all installed binary packages listed from the source package with a version ending with +<os_version> or
# -<os_version> to the package version provided by the official Debian/Ubuntu repositories
apt-downgrade-bin-packages-to-official-archive.sh "$os_version" full "$auto" "$versions_group" "$bin_packages_list" '' $apt_non_interactive_enabled
return_code=$?
if [[ $return_code -ne 0 ]]; then
aplay /usr/share/emacs/site-lisp/emacspeak/sounds/classic/alert-user.wav
if [[ $apt_non_interactive_enabled == true ]]; then
echo 'debconf debconf/frontend select Dialog' | debconf-set-selections
fi
exit 1
fi
# Previous script may have set debconf/frontend to Dialog
if [[ $apt_non_interactive_enabled == true ]]; then
echo 'debconf debconf/frontend select Noninteractive' | debconf-set-selections
fi
if [[ ("$hold" == true) || ("$hold" == yes) ]]; then
# Holding all installed binary packages listed from the source package
dpkg-lock.sh apt-mark hold "$bin_packages_list"
fi
aplay /usr/share/sounds/purple/login.wav
if [[ $apt_non_interactive_enabled == true ]]; then
echo 'debconf debconf/frontend select Dialog' | debconf-set-selections
fi
exit 0
|
