#!/bin/sh
#
# Entropy Server QA executable hook.
# This file doesn't strictly need to be a shell script, but just an executable
# file (r-xr-xr-x) and (mandatory) owned by root:root.
# Please rename this file by stripping the .example part
#
# It is used by Entropy Server QA routines to perform package metadata
# validation.
# Metadata is export in environmental variables form, and include:
#
# REPOSITORY_ID = repository identifier
# PKG_ID = package identifier
# PKG_ATOM = package atom
# PKG_NAME = package name
# PKG_VERSION = package version
# PKG_TAG = package version tag
# PKG_DESCRIPTION = package description
# PKG_CATEGORY = package category
# PKG_CHOST = package CHOST
# PKG_CFLAGS = package CFLAGS
# PKG_CXXFLAGS = package CXXFLAGS
# PKG_HOMEPAGE = package homepage
# PKG_LICENSE = package license
# PKG_BRANCH = package license
# PKG_DOWNLOAD = package relative download URL
# PKG_MD5 = package file md5 hash
# PKG_SLOT = package slot
# PKG_ETPAPI = package Entropy API
# PKG_DATE = package creation date (in unix time)
# PKG_SIZE = package size, in bytes
# PKG_REVISION = package entropy revision
# PKG_DEPS = list (\n separated) of package dependencies and conflicts
# PKG_NEEDED_LIBS = list (\n separated) of SONAMES required by package,
#    including ELF class, so each item will look like this:
#     <soname>|<elfclass>
# PKG_PROVIDED_LIBS = list (\n separated) of SONAMES provided by package,
#    note: elf class and path are also provided,
#    so each item will look like this:
#     <soname>|<path of soname>|<elfclass>
# PKG_CONTENT = list (\n separated) of package files and dirs owned by package
#
# The executable must return 0 for success, 1 for warning, 2 for critical error

EXIT_STATUS=0

function dep_getkey() {
	echo -n $(python -c "import sys, entropy.dep; sys.stdout.write(entropy.dep.dep_getkey(\"${1}\"))")
}

function check_unwanted_deps() {
	# Check against forbidden dependencies, those we consider meta packages, placeholders
	# just to keep Gentoo compatibility, which, if listed as dep in, would cause the
	# whole world to be pulled in.
	local unwanted_deps="app-admin/packagekit
		app-text/poppler
		kde-base/kde-l10n
		net-dns/avahi
		net-p2p/transmission"

	for dep in ${PKG_DEPS}; do
		# here we have plain deps, not conditional
		for unwanted_dep in ${unwanted_deps}; do
			dep_key=$(dep_getkey "${dep}")
			if [ "${unwanted_dep}" = "${dep_key}" ]; then
				echo
				echo "ATTENTION ATTENTION ATTENTION"
				echo "${PKG_ATOM} contains forbidden dependency against ${dep}"
				echo "ATTENTION ATTENTION ATTENTION"
				echo
				EXIT_STATUS=1
			fi
		done
	done
}

#
# Main execution
#

check_unwanted_deps

exit ${EXIT_STATUS}