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