josch/find_dpkg_trigger_cycles
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find_dpkg_trigger_cycles/setup.sh

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#!/bin/sh
#
# Copyright 2014 Johannes Schauer <j.schauer@email.de>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
set -e
ARCH="amd64"
SUITE="unstable"
MIRROR="http://http.debian.net/debian"
DIRECTORY="`pwd`/debian-$SUITE-$ARCH"
DISTNAME="$SUITE-$ARCH"
APT_FILE_OPTS="--architecture $ARCH"
APT_FILE_OPTS=$APT_FILE_OPTS" --cache $HOME/.chdist/$DISTNAME/var/cache/apt/apt-file"
APT_FILE_OPTS=$APT_FILE_OPTS" --sources-list $HOME/.chdist/$DISTNAME/etc/apt/sources.list"
# delete possibly existing dist
rm -rf ~/.chdist/$DISTNAME;
# the "[arch=amd64]" is a workaround until #774685 is fixed
chdist --arch=$ARCH create $DISTNAME "[arch=amd64]" $MIRROR $SUITE main
chdist --arch=$ARCH apt-get $DISTNAME update
apt-file $APT_FILE_OPTS update
mkdir -p $DIRECTORY
printf "" > $DIRECTORY/interested-file
printf "" > $DIRECTORY/interested-explicit
printf "" > $DIRECTORY/activated-file
printf "" > $DIRECTORY/activated-explicit
# find all binary packages with /triggers$
curl --globoff "http://binarycontrol.debian.net/?q=&path=${SUITE}%2F[^%2F]%2B%2Ftriggers%24&format=pkglist" \
| xargs chdist apt-get $DISTNAME --print-uris download \
| sed -ne "s/^'\([^']\+\)'\s\+\([^_]\+\)_.*/\2 \1/p" \
| sort \
| while read pkg url; do
echo "working on $pkg..." >&2
tmpdir=`mktemp -d`
curl --retry 2 --location --silent "$url" \
| dpkg-deb --ctrl-tarfile /dev/stdin \
| tar -C "$tmpdir" --exclude=./md5sums -x
if [ ! -f "$tmpdir/triggers" ]; then
rm -r "$tmpdir"
continue
fi
# find all triggers that are either interest or interest-await
# and which are file triggers (start with a slash)
egrep "^\s*interest(-await)?\s+/" "$tmpdir/triggers" | while read line; do
echo "$pkg $line"
done >> $DIRECTORY/interested-file
egrep "^\s*interest(-await)?\s+[^/]" "$tmpdir/triggers" | while read line; do
echo "$pkg $line"
done >> $DIRECTORY/interested-explicit
egrep "^\s*activate(-await)?\s+/" "$tmpdir/triggers" | while read line; do
echo "$pkg $line"
done >> $DIRECTORY/activated-file
egrep "^\s*activate(-await)?\s+[^/]" "$tmpdir/triggers" | while read line; do
echo "$pkg $line"
done >> $DIRECTORY/activated-explicit
rm -r "$tmpdir"
done
printf "" > $DIRECTORY/result-file
# go through those that are interested in a path and check them against the
# files provided by its dependency closure
cat $DIRECTORY/interested-file | while read pkg ttype ipath; do
echo "working on $pkg..." >&2
echo "getting dependency closure..." >&2
# go through all packages in the dependency closure and check if any
# of the files they ship match one of the interested paths
dose-ceve -c $pkg -T cudf -t deb \
$HOME/.chdist/$DISTNAME/var/lib/apt/lists/*_dists_${SUITE}_main_binary-${ARCH}_Packages \
| awk '/^package:/ { print $2 }' \
| apt-file $APT_FILE_OPTS show -F --from-file - \
| sed -ne "s ^\([^:]\+\):\s\+\(${ipath}\) \1\t\2 p" \
| while read dep cpath; do
[ "$pkg" != "$dep" ] || continue
echo "$pkg $ipath $dep $cpath"
done >> $DIRECTORY/result-file
done
# go through those that are interested in a path and check them against the
# packages in the dependency closure which activate such a path
cat $DIRECTORY/interested-file | while read pkg ttype ipath; do
echo "working on $pkg..." >&2
echo "getting dependency closure..." >&2
# go through all packages in the dependency closure and check if any
# of them activate a matching path
dose-ceve -c $pkg -T cudf -t deb \
$HOME/.chdist/$DISTNAME/var/lib/apt/lists/*_dists_${SUITE}_main_binary-${ARCH}_Packages \
| awk '/^package:/ { print $2 }' \
| while read dep; do
[ "$pkg" != "$dep" ] || continue
# using the space as sed delimeter because ipath has slashes
# a space should work because neither package names nor paths have them
sed -ne "s ^$dep\s\+activate\(-await\)\?\s\+\($ipath.*\) \2 p" $DIRECTORY/activated-file | while read cpath; do
echo "$pkg $ipath $dep $cpath"
done
done >> $DIRECTORY/result-file
done
printf "" > $DIRECTORY/result-explicit
# go through those that are interested in an explicit trigger and check them
# against the packages in their dependency closure which activate it
cat $DIRECTORY/interested-explicit | while read pkg ttype iname; do
echo "working on $pkg..." >&2
echo "getting dependency closure..." >&2
# go through all packages in the dependency closure and check if any of
# them activate the trigger in which this package is interested
dose-ceve -c $pkg -T cudf -t deb \
$HOME/.chdist/$DISTNAME/var/lib/apt/lists/*_dists_${SUITE}_main_binary-${ARCH}_Packages \
| awk '/^package:/ { print $2 }' \
| while read dep; do
[ "$pkg" != "$dep" ] || continue
if egrep "^$dep\s+activate(-await)?\s+$iname\s*$" $DIRECTORY/activated-explicit > /dev/null; then
echo "$pkg $iname $dep"
fi
done >> $DIRECTORY/result-explicit
done
echo "+----------------------------------------------------------+"
echo "| result summary |"
echo "+----------------------------------------------------------+"
echo ""
echo "number of found file based trigger cycles:"
wc -l < $DIRECTORY/result-file
if [ `wc -l < $DIRECTORY/result-file` -ne 0 ]; then
echo "Warning: found file based trigger cycles"
echo "number of packages creating file based trigger cycles:"
awk '{ print $1 }' $DIRECTORY/result-file | sort | uniq | wc -l
echo "unique packages creating file based trigger cycles:"
awk '{ print $1 }' $DIRECTORY/result-file | sort | uniq
fi
echo "number of found explicit trigger cycles:"
wc -l < $DIRECTORY/result-explicit
if [ `wc -l < $DIRECTORY/result-explicit` -ne 0 ]; then
echo "Warning: found explicit trigger cycles"
echo "number of packages creating explicit trigger cycles:"
awk '{ print $1 }' $DIRECTORY/result-explicit | sort | uniq | wc -l
echo "unique packages creating explicit trigger cycles:"
awk '{ print $1 }' $DIRECTORY/result-explicit | sort | uniq
fi
if [ `wc -l < $DIRECTORY/result-file` -ne 0 ]; then
echo ""
echo ""
echo "+----------------------------------------------------------+"
echo "| file based trigger cycles |"
echo "+----------------------------------------------------------+"
echo ""
echo "# Associates binary packages with other binary packages they can form a file"
echo "# trigger cycle with. The first column is the binary package containing the file"
echo "# trigger, the second column is the file trigger, the third column is a binary"
echo "# package providing a path that triggers the binary package in the first column,"
echo "# the fourth column is the triggering path of provided by the binary package in"
echo "# the third column."
echo ""
cat $DIRECTORY/result-file
fi
if [ `wc -l < $DIRECTORY/result-explicit` -ne 0 ]; then
echo ""
echo ""
echo "+----------------------------------------------------------+"
echo "| explicit trigger cycles |"
echo "+----------------------------------------------------------+"
echo ""
echo "# Associates binary packages with other binary packages they can form an explicit"
echo "# trigger cycle with. The first column is the binary package interested in the"
echo "# explicit trigger, the second column is the name of the explicit trigger, the"
echo "# third column is the binary package activating the trigger."
echo ""
cat $DIRECTORY/result-explicit
fi
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