[gentoo-commits] proj/qa-scripts:master commit in: /

["Michael Palimaka" <kensington@gentoo.org>]

commit:     29ece55c0c90b5bbe8ab21ddd6e0363ea9bd053a
Author:     Michael Palimaka <kensington <AT> gentoo <DOT> org>
AuthorDate: Sun Jun  8 16:23:26 2014 +0000
Commit:     Michael Palimaka <kensington <AT> gentoo <DOT> org>
CommitDate: Sun Jun  8 16:23:26 2014 +0000
URL:        http://git.overlays.gentoo.org/gitweb/?p=proj/qa-scripts.git;a=commit;h=29ece55c

depcheck: add script for checking binary runtime dependencies.

---
 depcheck | 258 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 258 insertions(+)

diff --git a/depcheck b/depcheck
new file mode 100755
index 0000000..15e171e
--- /dev/null
+++ b/depcheck
@@ -0,0 +1,258 @@
+#!/bin/bash
+#
+# Copyright (c) 2014 Michael Palimaka <kensington@gentoo.org>
+#
+# 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.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+#
+# A tool to report both undeclared and potentially-unused runtime dependencies.
+#
+# Depends on app-misc/pax-utils, app-portage/portage-utils and
+# sys-apps/gentoo-functions.
+
+DEBUG=FALSE
+IGNORE_DEPS=( "sys-libs/glibc" "sys-devel/gcc" )
+IGNORE_LINKS=( "/lib64/libgcc_s.so.1" )
+PKG_DIR="/var/db/pkg/"
+
+. /lib/gentoo/functions.sh
+
+bold() {
+	echo $@
+	return
+	local bold=$(tput bold)
+	local normal=$(tput sgr0)
+	echo "${bold}${@}${normal}"
+}
+
+debug() {
+	if [ $DEBUG = TRUE ]; then
+		# write to stderr so as not to interfere with function returns
+		echo "$@" 1>&2
+	fi
+}
+
+# app-foo/bar-1.2.3-r1 -> app-foo/bar
+remove_atom_version() {
+	local atom=`qatom "${1}" | cut -d " " -f 1-2 | tr " " /`
+	echo $atom
+}
+
+check_atom() {
+
+	local errors=0
+	local atom=$1
+	local checked=()
+	local rdepends=()
+
+	local objects=`qlist -qo ${atom}`
+
+	if [ ! "${objects}" ]; then
+		einfo ${atom} does not have any objects installed, skipping...
+		echo
+		return
+	fi
+
+	einfo Checking ${atom} for undeclared dependencies
+	eindent
+
+	local obj
+	for obj in $objects
+	do
+		debug "Checking ${obj}"
+
+		readelf -h ${obj} > /dev/null 2>&1
+
+		# can it have stuff linked to it?
+		if [ $? -ne 0 ]; then
+			debug "It can't have links, skipping"
+			continue
+		fi
+
+		local elf=`scanelf --format "#f%n" --nobanner --use-ldpath ${obj} 2>&1`
+		local links=`echo ${elf} | tr "," " "`
+
+		# get a list of everything that it's linked to
+		local link
+		for link in $links
+		do
+			local ignore
+			for ignore in "${IGNORE_LINKS[@]}"; do
+				if [ "${ignore}" = "${link}" ]; then
+					debug "Ignoring ${link} due to blacklist"
+					continue 2
+				fi
+			done
+
+			# only check a library once per atom for performance reasons
+			local check
+			for check in "${checked[@]}"; do
+				if [ "${check}" = "${link}" ]; then
+					debug "Already checked ${link} for this atom, skipping"
+					continue 2
+				fi
+			done
+
+			checked=( "${checked[@]}" "${link}" )
+
+			debug "Found ${link}"
+
+			local libowner=`qfile -vqC ${link} | uniq`
+
+			if [ ! "${libowner}" ]; then
+				ewarn "No package claims ${link} (${obj})"
+				continue
+			fi
+
+			debug "Owning package for ${link} is ${libowner}"
+
+			local libowner_pn=$(remove_atom_version ${libowner})
+			local my_pn=$(remove_atom_version ${atom})
+
+			rdepends+=( "${libowner_pn}" )
+
+			if [ "${libowner_pn}" = "${my_pn}" ]; then
+				debug "Owning package is self, ignoring"
+				continue
+			fi
+
+			local ignorelib
+			for ignorelib in "${IGNORE_DEPS[@]}"
+			do
+				if [ "${libowner_pn}" = "${ignorelib}" ]; then
+					debug "Ignoring objects belonging to ${ignorelib}"
+					continue 2
+				fi
+			done
+
+			debug "Checking if ${libowner_pn} is in the RDEPEND list of ${atom}"
+
+			local isdep
+			isdep=`qdepends -r ${atom} | grep ${libowner_pn}`
+
+			if [ $? -ne 0 ]; then
+				eerror "${obj} links to ${link}"
+				eindent
+				eerror Missing dependency on $(bold ${libowner_pn})
+				eoutdent
+				errors=1
+			fi
+
+
+		done
+
+	done
+
+	local ebuild_rdepends=()
+	for rdepend in $(qdepends --nocolor --quiet --rdepend ${atom} | sed -e "s/\[[^]]*\]//g" | cut -d : -f 2-)
+	do
+		ebuild_rdepends+=( $(remove_atom_version $rdepend) )
+	done
+
+	debug "Ebuild RDEPENDS: ${ebuild_rdepends[@]}"
+	debug "Linked RDEPENDS: ${rdepends[@]}"
+
+	local suspect_rdepends=$(comm -13 <(echo ${rdepends[@]} | sed 's/ /\n/g' | sort -u) <(echo ${ebuild_rdepends[@]} | sed 's/ /\n/g' | sort -u))
+	if [ "${suspect_rdepends}" ]; then
+		ewarn "Suspect RDEPEND: $(bold ${suspect_rdepends})"
+	fi
+
+	echo
+	eoutdent
+
+	return $errors
+
+}
+
+check_package() {
+
+	local package=$1
+	local atoms=`qlist -IcCS ${package} | tr ' ' '-' | cut -d : -f1`
+
+	debug Package ${package} own atoms: ${atoms}
+
+	if [ ! "${atoms}" ]; then
+		eerror ERROR: ${package} is not a valid atom
+		exit 1
+	fi
+
+	for atom in ${atoms}; do
+		check_atom ${atom}
+	done
+
+}
+
+check_category() {
+
+	local errors=0
+	
+	for package in `ls "${PKG_DIR}/${1}"`; do
+	
+		check_package "${1}/${package}"
+		
+		if [ $? -ne 0 ]; then
+			errors=1
+		fi
+		
+	done;
+	
+	return $errors
+	
+}
+
+BINNAME=`basename ${0}`
+if [ -z $1 ]; then
+	echo "Checks emerged package(s) for undeclared depedencies"
+	echo
+        echo "Usage: ${BINNAME} [ atom | -c category | -a ]"
+	echo
+        echo "Examples:"
+	echo "Check a single package: ${BINNAME} app-foo/bar-1.2.3"
+	echo "Check a category: ${BINNAME} -c app-foo"
+	echo "Check everything: ${BINNAME} -a"
+	exit 1
+fi
+
+# check a particular category
+if [ "$1" = "-c" ]; then
+
+	CAT=$2
+
+	if [ ! -d "${PKG_DIR}/${CAT}" ]; then
+		eerror ERROR: No packages from the category ${CAT} have been emerged yet
+		exit 1
+	fi
+
+	check_category $CAT
+
+# check everything
+elif [ "$1" = "-a" ]; then
+
+	for category in `ls ${PKG_DIR}`; do
+		check_category $category
+	done;
+
+else
+	check_package $1
+fi
+
+if [ $? -eq 0 ]; then
+	einfo Checking complete, no errors found
+else
+	eerror Checking complete, errors found
+fi