build-compare/functions.sh

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#! /bin/bash
#
# Copyright (c) 2009, 2010 SUSE Linux Product GmbH, Germany.
# Licensed under GPL v2, see COPYING file for details.
#
# Written by Michael Matz and Stephan Coolo
# Enhanced by Andreas Jaeger
# library of functions used by scripts
RPM="rpm -qp --nodigest --nosignature"
check_header()
{
$RPM --qf "$QF" "$1"
}
function check_provides()
{
# provides destroy this because at least the self-provide includes the
# -buildnumber :-(
QF="[%{PROVIDENAME} %{PROVIDEFLAGS} %{PROVIDEVERSION}\\n]\\n"
QF="$QF [%{REQUIRENAME} %{REQUIREFLAGS} %{REQUIREVERSION}\\n]\\n"
QF="$QF [%{CONFLICTNAME} %{CONFLICTFLAGS} %{CONFLICTVERSION}\\n]\\n"
QF="$QF [%{OBSOLETENAME} %{OBSOLETEFLAGS} %{OBSOLETEVERSION}\\n]\\n"
check_header "$1" | sed -e "s,-$2$,-@RELEASE@,"
}
#usage unrpm <file> $dir
# Unpack rpm files in directory $dir
# like /usr/bin/unrpm - just for one file and with no options
function unrpm()
{
local file
local dir
file=$1
dir=$2
CPIO_OPTS="--extract --unconditional --preserve-modification-time --make-directories --quiet"
mkdir -p $dir
pushd $dir 1>/dev/null
rpm2cpio $file | cpio ${CPIO_OPTS}
popd 1>/dev/null
}
# Compare just the rpm meta data of two rpms
# Returns:
# 0 in case of same content
# 1 in case of errors or difference
# 2 in case of differences that need further investigation
# Sets $files with list of files that need further investigation
function cmp_spec ()
{
QF="%{NAME}"
# don't look at RELEASE, it contains our build number
QF="$QF %{VERSION} %{EPOCH}\\n"
QF="$QF %{SUMMARY}\\n%{DESCRIPTION}\\n"
QF="$QF %{VENDOR} %{DISTRIBUTION} %{DISTURL}"
QF="$QF %{LICENSE} %{LICENSE}\\n"
QF="$QF %{GROUP} %{URL} %{EXCLUDEARCH} %{EXCLUDEOS} %{EXCLUSIVEARCH}\\n"
QF="$QF %{EXCLUSIVEOS} %{RPMVERSION} %{PLATFORM}\\n"
QF="$QF %{PAYLOADFORMAT} %{PAYLOADCOMPRESSOR} %{PAYLOADFLAGS}\\n"
QF="$QF [%{PREINPROG} %{PREIN}\\n]\\n[%{POSTINPROG} %{POSTIN}\\n]\\n[%{PREUNPROG} %{PREUN}\\n]\\n[%{POSTUNPROG} %{POSTUN}\\n]\\n"
# XXX We also need to check the existence (but not the content (!))
# of SIGGPG (and perhaps the other SIG*)
# XXX We don't look at triggers
QF="$QF [%{VERIFYSCRIPTPROG} %{VERIFYSCRIPT}]\\n"
# Only the first ChangeLog entry; should be enough
QF="$QF %{CHANGELOGTIME} %{CHANGELOGNAME} %{CHANGELOGTEXT}\\n"
file1=`mktemp`
file2=`mktemp`
check_header $oldrpm > $file1
check_header $newrpm > $file2
# the DISTURL tag can be used as checkin ID
#echo "$QF"
if ! diff -au $file1 $file2; then
rm $file1 $file2
return 1
fi
release1=`$RPM --qf "%{RELEASE}" "$oldrpm"`
release2=`$RPM --qf "%{RELEASE}" "$newrpm"`
check_provides $oldrpm $release1 > $file1
check_provides $newrpm $release2 > $file2
if ! diff -au $file1 $file2; then
rm $file1 $file2
return 1
fi
# First check the file attributes and later the md5s
# Now the files. We leave out mtime and size. For normal files
# the size will influence the MD5 anyway. For directories the sizes can
# differ, depending on which file system the package was built. To not
# have to filter out directories we simply ignore all sizes.
# Also leave out FILEDEVICES, FILEINODES (depends on the build host),
# FILECOLORS, FILECLASS (???), FILEDEPENDSX and FILEDEPENDSN.
# Also FILELANGS (or?)
QF="[%{FILENAMES} %{FILEFLAGS} %{FILESTATES} %{FILEMODES:octal} %{FILEUSERNAME} %{FILEGROUPNAME} %{FILERDEVS} %{FILEVERIFYFLAGS} %{FILELINKTOS}\n]\\n"
# ??? what to do with FILEPROVIDE and FILEREQUIRE?
check_header $oldrpm > $file1
check_header $newrpm > $file2
if ! diff -au $file1 $file2; then
rm $file1 $file2
return 1
fi
# now the md5sums. if they are different, we check more detailed
# if there are different filenames, we will already have aborted before
QF="[%{FILENAMES} %{FILEMD5S}\n]\\n"
check_header $oldrpm > $file1
check_header $newrpm > $file2
RES=2
# done if the same
if cmp -s $file1 $file2; then
RES=0
fi
# Get only files with different MD5sums
files=`diff -U0 $file1 $file2 | fgrep -v +++ | grep ^+ | cut -b2- | awk '{print $1}'`
rm $file1 $file2
return $RES
}