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#!/bin/sh
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#
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# get-packages <type> <package> ...
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#
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# Download deb or udeb package with the help of apt-get
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# type : deb | udeb
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#
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# Files:
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# sources.list.udeb / sources.list.udeb.local
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# sources.list.deb / sources.list.deb.local
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#
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# Environment:
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# APTDIR - basename for the apt directory (default: apt.$TYPE)
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# DEBUG - build debug udebs from source (default: n)
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# DEBUGUDEBDIR - directory for debug udebs (default: debugudebs)
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# UDEBDIR - directory for ready-to-use udebs (default: udebs)
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# LOCALUDEBDIR - directory for locally provided udebs (default: localudebs)
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# ONLINE - update Packages files (default: y)
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set -e
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# parse parameters
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TYPE=$1
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shift
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PACKAGES=$*
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# Setup environment
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if [ ! $APTDIR ]; then
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APTDIR="apt"
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fi
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if [ ! $DEBUGUDEBDIR ]; then
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DEBUGUDEBDIR="debugudebs"
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fi
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if [ ! $UDEBDIR ]; then
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UDEBDIR="udebs"
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fi
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if [ ! $LOCALUDEBDIR ]; then
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LOCALUDEBDIR="localudebs"
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fi
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if [ ! $ONLINE ]; then
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ONLINE="y"
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fi
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# Set APTDIR according to type
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# debs are kept in another apt cache so only the needed Packages files
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# are downloaded and autoclean doesnt run wild.
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APTDIR=$APTDIR.$TYPE
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# Set sources.list file
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if [ -f sources.list.$TYPE.local ]; then
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LIST=sources.list.$TYPE.local
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else
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LIST=sources.list.$TYPE
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make sources.list.$TYPE
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fi
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# All these options make apt read the right sources list, and use APTDIR for
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# everything so it need not run as root.
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APT_GET="apt-get --assume-yes \
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-o Dir::Etc::sourcelist=`pwd`/$LIST \
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-o Dir::State=`pwd`/$APTDIR/state \
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-o Debug::NoLocking=true \
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-o Dir::Cache=`pwd`/$APTDIR/cache \
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-o Apt::Architecture=`dpkg-architecture -qDEB_HOST_ARCH`"
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# Prepare APTDIR
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mkdir -p $APTDIR/state/lists/partial
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mkdir -p $APTDIR/cache/archives/partial
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if [ "$TYPE" = "deb" ]; then
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echo -n > $APTDIR/state/status
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APT_GET="$APT_GET -o Dir::State::Status=`pwd`/$APTDIR/state/status"
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else
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# Prime status file with system libraries
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# Currently disabled and we use the system status file, but this
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# may be used when we transition to using proper library udebs.
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#echo -n > $APTDIR/state/status
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# Some archs have libc6 others have libc6.1
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#dpkg -s libc6 >> $APTDIR/state/status || dpkg -s libc6.1 >> $APTDIR/state/status
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#for i in libnewt0.51 libdebconfclient0 libdebian-installer4 \
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# libdb1-compat slang1a-utf8 libdiscover1 discover-data; do
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# dpkg -s $i >> $APTDIR/state/status
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#done
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:
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fi
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# Update package lists and autoclean cache
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if [ "$ONLINE" = "y" ]; then
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$APT_GET update || {
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echo "Failed to update the Packages file. This usually means either of:"
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echo
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echo "A) $LIST does not contain a vaild repository."
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echo " You can override the generated sources.list.$TYPE"
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echo " with sources.list.$TYPE.local if you haven't done so yet."
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echo
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echo "B) The repository in $LIST is not reachable."
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echo " If you are not working online, use 'export ONLINE=n' to skip updating"
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echo " the Packages files. Beware that this can result in images with"
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echo " out-of-date packages and should be used for private development only."
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exit 1
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}
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$APT_GET autoclean
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fi
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# If there are local (u)debs, remove them from the list of things to
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# get. Then get all the (u)debs that are left to get. Note that the
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# trailing blank on the next line is significant. It makes the sed
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# below always work.
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needed="$PACKAGES "
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for file in `find $LOCALUDEBDIR -name "*_*" -printf "%f\n" 2>/dev/null`; do
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package=`echo $file | cut -d _ -f 1`
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needed=`echo " $needed " | sed "s/ $package / /g"`
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done
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if [ "$DEBUG" = y ]; then
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mkdir -p $DEBUGUDEBDIR
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cd $DEBUGUDEBDIR
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export DEB_BUILD_OPTIONS="debug"
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$APT_GET source --build --yes $needed
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cd ..
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else
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echo Need to download : $needed
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if [ -n "$needed" ]; then
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$APT_GET -dy install $needed
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fi
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fi
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# Now the (u)debs are in APTDIR/cache/archives/ and maybe LOCALUDEBDIR
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# or DEBUGUDEBDIR, but there may be other (u)debs there too besides
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# those we asked for. So link those we asked for to UDEBDIR, renaming
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# them to more useful names. Watch out for duplicates and missing
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# files while doing that.
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rm -rf $UDEBDIR
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mkdir -p $UDEBDIR
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lnpkg() {
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local pkg=$1; local dir=$2 debdir=$3;
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local L1="`echo $dir/$pkg\_*`"
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local L2="`echo $L1 | sed -e 's, ,,g'`"
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if [ "$L1" != "$L2" ]; then
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echo "Duplicate package $pkg in $dir/";
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exit 1
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fi
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if [ -e $L1 ]; then
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ln -f $dir/${pkg}_* $debdir/$pkg.$TYPE
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fi
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}
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for package in $PACKAGES; do
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lnpkg $package $APTDIR/cache/archives $UDEBDIR
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lnpkg $package $LOCALUDEBDIR $UDEBDIR
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lnpkg $package $DEBUGUDEBDIR $UDEBDIR
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if [ ! -e $UDEBDIR/$package.$TYPE ]; then
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echo "Needed $package not found (looked in $APTDIR/cache/archives/, $LOCALUDEBDIR/, $DEBUGUDEBDIR/)";
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exit 1
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fi
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done
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