404 lines
12 KiB
Bash
Executable file
404 lines
12 KiB
Bash
Executable file
#!/usr/bin/env bash
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# Installs Debian packages on a Debian system
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# with no root access, in the user home
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# CONFIGURATION
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# Verifications
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if [[ -z $DEBIAN_MIRROR && ! -f /etc/apt/sources.list ]]; then
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echo "Unable to find a mirror. Try setting DEBIAN_MIRROR (see help)."
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exit 1
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fi
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if [[ -z $DEBIAN_DB && ! $(which apt &> /dev/null) ]]; then
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echo "Unable to find a database for packages to install. Try setting DEBIAN_DB (see help)."
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exit 1
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fi
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# Overrides
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[ -z $DEBLOC_PREFIX ] && DEBLOC_PREFIX=$(dpkg --print-architecture)
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[ -z $DEBLOC_DB ] && DEBLOC_DB=${XDG_CONFIG_HOME:-$HOME/.config}/$DEBLOC_PREFIX
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[ -z $DEBLOC_ROOT ] && DEBLOC_ROOT=$HOME/.debloc/$DEBLOC_PREFIX
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DEBLOC_LD=$DEBLOC_ROOT/ld
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if [ -z $DEBIAN_MIRROR ]; then
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DEBIAN_MIRROR="$(cat /etc/apt/sources.list | grep '^deb ' | grep main | grep -v backports)"
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DEBIAN_MIRROR="$(echo -e "$DEBIAN_MIRROR" | cut -d ' ' -f 2 | sed 's/\/$//' | sort | uniq)"
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fi
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# Preparation
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mkdir -p $DEBLOC_DB &> /dev/null
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mkdir -p $DEBLOC_ROOT &> /dev/null
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# PRIVATE FUNCTIONS
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# Tell if a package exists
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function _debloc-exists { # package
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if [[ -n $DEBIAN_DB && -f $DEBIAN_DB ]]; then
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grep "^Package: $1\$" $DEBIAN_DB --quiet
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else
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LANG=C apt-cache show $1 &> /dev/null
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fi
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if [ $? == 0 ]; then
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return 1
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else
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return 0
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fi
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}
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# Return the real package associated with a virtual package
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# If not a virtual package, return the input
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function _debloc-filterVirtual { # package
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pkg=$1
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if [[ -n $DEBIAN_DB && -f $DEBIAN_DB ]]; then
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echo $pkg
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else
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LANG=C apt-cache policy $1 | grep "Candidate" | grep "(none)" > /dev/null
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if [ $? == 0 ]; then
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# TODO This is not really accurate
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LANG=C apt-cache showpkg $pkg | tail -1 | cut -d ' ' -f 1
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else
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echo $pkg
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fi
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fi
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return 0
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}
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# Tell if a package is installed via debloc
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function _debloc-locallyInstalled { # package
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if [ -f $DEBLOC_DB/$1 ]; then
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return 1
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else
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return 0
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fi
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}
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# Tell if a package is installed system-wide
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function _debloc-globallyInstalled { # package
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STATUS=$(mktemp)
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LANG=C dpkg --list $1 &> $STATUS
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if [ $? != 0 ]; then
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rm -f $STATUS > /dev/null
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return 0
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fi
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cat $STATUS | grep '^Status:' | grep ' installed' --quiet
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if [ $? != 0 ]; then
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rm -f $STATUS > /dev/null
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return 0
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else
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rm -f $STATUS > /dev/null
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return 1
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fi
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}
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# Get informations about a package
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function _debloc-packageShow { # package
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pkg=$1
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if [[ -n $DEBIAN_DB && -f $DEBIAN_DB ]]; then
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startline=$(grep "^Package: ${pkg}\$" $DEBIAN_DB --line-number | tail -1 | cut -d ':' -f 1)
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if [ -z "$startline" ]; then
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return 0
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fi
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sed -n "$startline,$(expr $startline + 100)p" $DEBIAN_DB | while read line; do
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if [ -z "$line" ]; then
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return 0
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fi
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echo $line
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done
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return 1
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else
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LANG=C apt-cache show $pkg | while read line; do
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if [ -z "$line" ]; then
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return 0
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fi
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echo "$line"
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done
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return 0
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fi
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}
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# Get the path of a package
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function _debloc-packagePath { # package
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_debloc-packageShow $1 | grep "^Filename:" | head -1 | cut -d ':' -f 2 | sed -e 's/^[[:space:]]*//'
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return 0
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}
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# Get the md5sum of a package
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function _debloc-packageMd5sum { # package
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_debloc-packageShow $1 | grep "^MD5sum:" | cut -d ':' -f 2 | sed -e 's/^[[:space:]]*//'
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return 0
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}
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# Update symbolics links in $DEBLOC_ROOT/lib
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function _debloc-ldconfig {
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mkdir -p $DEBLOC_LD &> /dev/null
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rm -f $DEBLOC_LD &> /dev/null
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find $DEBLOC_ROOT{/usr,}/lib -type f -name "*.so*" | while read lib; do
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ln --symbolic --force "$lib" "$DEBLOC_LD/$(basename $lib)"
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done &> /dev/null
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find $DEBLOC_ROOT{/usr,}/lib -type l -name "*.so*" | while read link; do
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yes | cp --force --no-dereference --preserve=links "$link" "$DEBLOC_LD" &> /dev/null
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done &> /dev/null
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}
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# Install debian archive
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function _debloc-installDeb { # path
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TMP_DIR=$(mktemp -d) &> /dev/null
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$(cd $TMP_DIR; ar x "$1")
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TAR_FILE=$(find $TMP_DIR -type f -name "data.tar.*" | head -1)
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if [ -e "$TAR_FILE" ]; then
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# Output for DB saving
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tar tf $TAR_FILE
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tar xf $TAR_FILE -C $DEBLOC_ROOT
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# _debloc-ldconfig
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mkdir -p $DEBLOC_LD &> /dev/null
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tar tf $TAR_FILE | grep '^.\(/usr\)\?/lib/' | grep '\.so' | while read file; do
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lib=$(readlink -f $DEBLOC_ROOT/$file)
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if [ -f $lib ]; then
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ln --symbolic --force "$lib" "$DEBLOC_LD/$(basename $file)"
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fi
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if [ -h $lib ]; then
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yes | cp --force --no-dereference --preserve=links "$(basename $link)" "$DEBLOC_LD/" &> /dev/null
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fi
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done
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fi
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rm -rf $TMP_DIR &> /dev/null
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return 0
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}
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# Install package
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function _debloc-install { # package
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pkg=$1
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DEB_FILE=$(mktemp) &> /dev/null
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path=$(_debloc-packagePath $pkg)
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echo -e "${DEBIAN_MIRROR}" | while read mirror; do
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if [ -z $mirror ]; then
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continue
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fi
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url=${mirror}/${path}
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echo "→ Downloading $url"
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wget "$url" --quiet -O $DEB_FILE
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if [ $? == 0 ]; then
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break
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fi
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done
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if [ ! -s $DEB_FILE ]; then
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echo "→ Failed (no deb file)!"
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rm $DEBLOC_DB/$pkg &> /dev/null
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return 4
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fi
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echo "→ Verifying sums"
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theo=$(_debloc-packageMd5sum $pkg)
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real=$(md5sum $DEB_FILE | cut -d ' ' -f 1)
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if [ "$theo" != "$real" ]; then
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rm -f $DEB_FILE &> /dev/null
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echo "→ Failed (sum doesn't match)!"
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rm $DEBLOC_DB/$pkg &> /dev/null
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return 5
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fi
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echo "→ Installing"
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_debloc-installDeb $DEB_FILE > $DEBLOC_DB/$pkg
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echo "→ Done!"
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rm -f $DEB_FILE &> /dev/null
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return 0
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}
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# Get the dependencies of a package
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function _debloc-packageDeps { # package
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_debloc-packageShow $1 | grep '^Depends:' | sed 's/Depends: //' | sed 's/, /\n/g' | cut -d ' ' -f 1
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return 0
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}
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# Install package with dependencies
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function _debloc-installDeps { # package
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pkg=$1
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echo "Installing $pkg"
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touch $DEBLOC_DB/$pkg # To prevent cyclic deps
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_debloc-packageDeps $pkg | while read dep; do
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dep=$(_debloc-filterVirtual $dep)
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_debloc-locallyInstalled $dep
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if [ $? == 1 ]; then
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echo "- Dependency $dep is already installed with Debloc"
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continue
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fi
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_debloc-globallyInstalled $dep
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if [ $? == 1 ]; then
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echo "- Dependency $dep is already installed on the system"
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continue
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fi
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_debloc-installDeps $dep | while read line; do echo "- $line"; done
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done
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_debloc-install $pkg
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return 0
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}
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# PUBLIC FUNCTIONS
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function debloc_env {
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echo "export PATH=\"$DEBLOC_ROOT/usr/bin:$DEBLOC_ROOT/usr/games/:$DEBLOC_ROOT/usr/lib/git-core:\$PATH\""
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echo "export LIBRARY_PATH=\"$DEBLOC_LD:\$LIBRARY_PATH\""
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echo "export C_INCLUDE_PATH=\"$DEBLOC_ROOT/usr/include:\$C_INCLUDE_PATH\""
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echo "export CPLUS_INCLUDE_PATH=\"$DEBLOC_ROOT/usr/include:$DEBLOC_ROOT/usr/include/python2.7/:$DEBLOC_ROOT/usr/include/x86_64-linux-gnu/python2.7/:\$CPLUS_INCLUDE_PATH\""
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echo "export LD_LIBRARY_PATH=\"$DEBLOC_LD:\$LD_LIBRARY_PATH\""
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echo "export PYTHONPATH=\"$DEBLOC_ROOT/usr/lib/python3/dist-packages:\$PYTHONPATH\""
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echo "export QT_QPA_PLATFORM_PLUGIN_PATH=\"$DEBLOC_ROOT/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms\""
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}
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function debloc_info {
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echo "DEBLOC_PREFIX=$DEBLOC_PREFIX"
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echo "DEBLOC_ROOT=$DEBLOC_ROOT"
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echo "DEBLOC_DB=$DEBLOC_DB"
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echo "DEBLOC_LD=$DEBLOC_LD"
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echo "DEBIAN_MIRROR=$DEBIAN_MIRROR"
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echo "DEBIAN_DB=$DEBIAN_DB"
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}
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function debloc_install_help {
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echo "Usage: $0 install PACKAGE"
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echo
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echo "Arguments:"
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echo " PACKAGE Package name"
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return 0
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}
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function debloc_install { # package
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if [ -z $1 ]; then
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debloc_deb_help
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fi
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for pkg in $*; do
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pkg=$(_debloc-filterVirtual $pkg)
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_debloc-exists $pkg
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if [ $? == 0 ]; then
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echo "Unknown package $pkg"
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continue
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fi
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_debloc-locallyInstalled $pkg
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if [ $? == 1 ]; then
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echo "Package $pkg is already installed with Debloc"
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continue
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fi
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_debloc-globallyInstalled $pkg
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if [ $? == 1 ]; then
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echo "Package $pkg is already installed on the system"
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continue
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fi
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_debloc-installDeps $pkg
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done
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return 0
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}
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function debloc_deb_help {
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echo "Usage: $0 deb PATH"
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echo
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echo "Arguments:"
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echo " PATH Path to the .deb file"
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return 0
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}
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function debloc_deb { # path
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if [ -z $1 ]; then
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debloc_deb_help
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fi
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for path in $*; do
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if [ ! -f "$path" ]; then
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echo "$path is not a file"
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return 6
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fi
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echo "Installing $(basename $path)"
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_debloc-installDeb "$(readlink -f $path)" > $DEBLOC_DB/$(basename $path)
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done
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return 0
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}
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function debloc_altern_help {
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echo "Usage: $0 altern PROGRAM ALTERNATIVE"
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echo
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echo "Arguments:"
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echo " PROGRAM Program to set the alternative for"
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echo " ALTERNATIVE Alternative to set"
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echo
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echo "Examples:"
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echo " $0 altern vim nox"
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echo " $0 altern dmenu xft"
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return 0
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}
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function debloc_altern { # program alternative
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if [[ -z $1 || -z $2 ]]; then
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debloc_altern_help
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exit 1
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fi
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if [ -f "$DEBLOC_ROOT/usr/bin/$1.$2" ]; then
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dest="$DEBLOC_ROOT/usr/bin/$1"
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alte="$DEBLOC_ROOT/usr/bin/$1.$2"
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elif [ -f "$DEBLOC_ROOT/bin/$1.$2" ]; then
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dest="$DEBLOC_ROOT/bin/$1"
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alte="$DEBLOC_ROOT/bin/$1.$2"
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else
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echo "Unknown alternative for $1 : $2"
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exit 1
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fi
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if [ -e "$dest" ]; then
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rm $dest
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fi
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ln -s "$alte" "$dest"
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}
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function debloc_flush {
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rm -rf $DEBLOC_ROOT/* &> /dev/null
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rm -f $DEBLOC_DB/* &> /dev/null
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}
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# TODO Other word for 'fake filesystem' and/or explain what this is
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function debloc_help {
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command="$1"
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if [ -n "$command" ]; then
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if type "debloc_${command}_help" &> /dev/null; then
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shift
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"debloc_${command}_help" "$@"
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return $?
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fi
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fi
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echo "Usage: $0 COMMAND"
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echo
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echo "Commands:"
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echo " env Provides the environment variables required to run applications from the fake filesystem"
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echo " info Gives some information about the fake filesystem"
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echo " install Install a debian package in the fake filesystem"
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echo " deb Install from a .deb file in the fake filesystem"
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echo " altern Update alternative"
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echo " flush Remove every package installed from the fake filesystem"
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echo " help Get help with commands"
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echo
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echo "Environment variables:"
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echo " DEBLOC_PREFIX Name of the fake filesystem to use (default: uses dpkg architecture)"
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echo " DEBLOC_ROOT Path of the fake filesystem (default: ~/.debloc/\$DEBLOC_PREFIX/)"
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echo " DEBLOC_DB Database of the fake filesystem (default: \$XDG_CONFIG_HOME/debloc/\$DEBLOC_PREFIX)"
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echo " DEBIAN_MIRROR Multiline list of debian mirror (default: uses /etc/apt/sources.list)"
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echo " DEBIAN_DB Path to a file with all packages description (default: uses apt-cache showpkg)"
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echo " help Get help with commands"
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return 0
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}
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# MAIN
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command="$1"
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shift
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if type "debloc_$command" &> /dev/null; then
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"debloc_$command" "$@"
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else
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debloc_help
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fi
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