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171 lines
5.4 KiB
171 lines
5.4 KiB
#!/bin/sh
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#
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# xrdp: A Remote Desktop Protocol server.
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#
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# Copyright (C) 2021 Matt Burt, all xrdp contributors
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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# Wrapper to call install_pulseaudio_sources.sh and tidy up afterwards
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# ---------------------------------------------------------------------------
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# G L O B A L S
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# ---------------------------------------------------------------------------
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# Where the output files are going. Must be under $HOME as schroot
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# assumes this.
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PULSE_DIR=$HOME/pulseaudio.src
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# Absolute path to the script we're wrapping. This picks it up from
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# the same directory this file is in
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WRAPPED_SCRIPT=$(cd $(dirname $0) && pwd)/install_pulseaudio_sources.sh
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# The buildroot directory. Choose fast, temporary storage if available
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BUILDROOT=/var/lib/pa-build/$USER
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# Extra packages to install in the build root which the wrapped script
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# may be using. These are packages available by default when using
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# GitHub actions
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WRAPPED_SCRIPT_DEPS="sudo lsb-release"
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# -----------------------------------------------------------------------------
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# I N S T A L L R E Q U I R E D P A C K A G E S
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#
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# Installs packages required for the build on the host machine
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# -----------------------------------------------------------------------------
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InstallRequiredPackages()
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{
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set -- \
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/usr/sbin/debootstrap debootstrap \
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/usr/bin/schroot schroot \
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/usr/bin/lsb_release lsb-release
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pkgs=
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while [ $# -ge 2 ]; do
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if [ ! -x $1 ]; then
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pkgs="$pkgs $2"
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fi
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shift 2
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done
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if [ -n "$pkgs" ]; then
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echo "- Need to install packages :$pkgs"
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echo
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echo " These can be removed when this script completes with:-"
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echo " sudo apt-get purge$pkgs && apt-get autoremove"
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echo
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sudo apt-get install -y $pkgs
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fi
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}
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# -----------------------------------------------------------------------------
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# R U N W R A P P E D S C R I P T
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#
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# Runs the wrapped build script using schroot
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#
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# This function definition uses () rather than {} to create an extra
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# sub-process where we can run 'set -e' without affecting the parent
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# -----------------------------------------------------------------------------
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RunWrappedScript()
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(
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# In this sub-process, fail on error
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set -e
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# Install extra dependencies
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schroot -c pa-build-$USER -u root -- \
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apt-get install -y $WRAPPED_SCRIPT_DEPS
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# Allow normal user to sudo without a password
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schroot -c pa-build-$USER -u root -- \
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/bin/sh -c "echo '$USER ALL=(ALL) NOPASSWD:ALL'>/etc/sudoers.d/nopasswd-$USER"
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schroot -c pa-build-$USER -u root -- chmod 400 /etc/sudoers.d/nopasswd-$USER
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# Call the wrapped script
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schroot -c pa-build-$USER -- /wrapped_script -d $PULSE_DIR
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)
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# -----------------------------------------------------------------------------
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# M A I N
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# -----------------------------------------------------------------------------
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# Start with a few sanity checks
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if [ -d $PULSE_DIR ]; then
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echo "** Target directory $PULSE_DIR already exists" >&2
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exit 0
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fi
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if [ ! -x $WRAPPED_SCRIPT ]; then
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echo "** Can't find wrapped script $WRAPPED_SCRIPT" >&2
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exit 1
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fi
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if [ -e $BUILDROOT ]; then
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echo "** Remove old build root $BUILDROOT before running this script"
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exit 1
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fi
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# Do we need extra packages?
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InstallRequiredPackages || exit $?
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# We should be able to determine the distro now
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distro=$(lsb_release -cs) ; # e.g. 'bullseye'
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if [ -z "$distro" ]; then
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echo "** Can't determine current distro" >&2
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exit 1
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fi
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# Create the build root
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log=/var/tmp/pa-build-$USER-debootstrap.log
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echo "- Creating $distro build root. Log file in $log"
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sudo debootstrap $distro $BUILDROOT >$log 2>&1 || {
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echo "** debootstrap failed. Check log file" >&2
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exit 1
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}
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# Create the config file for schroot
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schroot_conf=/etc/schroot/chroot.d/pa-build-$USER.conf
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echo "- Creating schroot config file $schroot_conf"
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{
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echo "[pa-build-$USER]"
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echo "description=Build PA on current system for $USER"
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echo "directory=$BUILDROOT"
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echo "root-users=$USER"
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echo "users=$USER"
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echo "type=directory"
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} | sudo tee $schroot_conf >/dev/null || exit $?
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# Copy some files to the build root
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for file in /etc/apt/sources.list; do
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echo "- Copying $file to the root"
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sudo cp $file $BUILDROOT/$file || exit $?
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done
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# Copy the wrapped script to the buildroot root
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echo "- Copying the wrapped script to the root"
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sudo cp $WRAPPED_SCRIPT $BUILDROOT/wrapped_script || exit $?
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sudo chmod +x $BUILDROOT/wrapped_script || exit $?
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# Run the wrapped script
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log=/var/tmp/pa-build-$USER-schroot.log
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echo "- Building PA sources. Log file in $log"
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RunWrappedScript >$log 2>&1 || {
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echo "** schroot failed. Check log file" >&2
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exit 1
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}
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# Done! Remove the schroot config file as its no longer needed
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echo "- Removing schroot config file and build root"
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sudo rm -rf $schroot_conf $BUILDROOT
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echo "- All done. Configure PA xrdp module with PULSE_DIR=$PULSE_DIR"
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exit 0
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