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#!/bin/bash
#
# verify_checksum.sh - functions for checking source checksums
#
# Copyright (c) 2014-2020 Pacman Development Team <pacman-dev@archlinux.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
[[ -n "$LIBMAKEPKG_INTEGRITY_VERIFY_CHECKSUM_SH" ]] && return
LIBMAKEPKG_INTEGRITY_CHECKSUM_SH=1
LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
source "$LIBRARY/util/message.sh"
source "$LIBRARY/util/pkgbuild.sh"
source "$LIBRARY/util/schema.sh"
check_checksums() {
local integ a
declare -A correlation
(( SKIPCHECKSUMS )) && return 0
# Initialize a map which we'll use to verify that every source array has at
# least some kind of checksum array associated with it.
(( ${#source[*]} )) && correlation['source']=1
case $1 in
all)
for a in "${arch[@]}"; do
array_build _ source_"$a" && correlation["source_$a"]=1
done
;;
*)
array_build _ source_"$CARCH" && correlation["source_$CARCH"]=1
;;
esac
for integ in "${known_hash_algos[@]}"; do
verify_integrity_sums "$integ" && unset "correlation[source]"
case $1 in
all)
for a in "${arch[@]}"; do
verify_integrity_sums "$integ" "$a" && unset "correlation[source_$a]"
done
;;
*)
verify_integrity_sums "$integ" "$CARCH" && unset "correlation[source_$CARCH]"
;;
esac
done
if (( ${#correlation[*]} )); then
error "$(gettext "Integrity checks are missing for: %s")" "${!correlation[*]}"
exit 1 # TODO: error code
fi
}
verify_integrity_one() {
local source_name=$1 integ=$2 expectedsum=$3
local file="$(get_filename "$source_name")"
printf ' %s ... ' "$file" >&2
if [[ $expectedsum = 'SKIP' ]]; then
printf '%s\n' "$(gettext "Skipped")" >&2
return
fi
if ! file="$(get_filepath "$file")"; then
printf '%s\n' "$(gettext "NOT FOUND")" >&2
return 1
fi
local realsum="$("${integ}sum" "$file")"
realsum="${realsum%% *}"
if [[ ${expectedsum,,} = "$realsum" ]]; then
printf '%s\n' "$(gettext "Passed")" >&2
else
printf '%s\n' "$(gettext "FAILED")" >&2
return 1
fi
return 0
}
verify_integrity_sums() {
local integ=$1 arch=$2 integrity_sums=() sources=() srcname
if [[ $arch ]]; then
array_build integrity_sums "${integ}sums_$arch"
srcname=source_$arch
else
array_build integrity_sums "${integ}sums"
srcname=source
fi
array_build sources "$srcname"
if (( ${#integrity_sums[@]} == 0 && ${#sources[@]} == 0 )); then
return 1
fi
if (( ${#integrity_sums[@]} == ${#sources[@]} )); then
msg "$(gettext "Validating %s files with %s...")" "$srcname" "${integ}sums"
local idx errors=0
for (( idx = 0; idx < ${#sources[*]}; idx++ )); do
verify_integrity_one "${sources[idx]}" "$integ" "${integrity_sums[idx]}" || errors=1
done
if (( errors )); then
error "$(gettext "One or more files did not pass the validity check!")"
exit 1 # TODO: error code
fi
elif (( ${#integrity_sums[@]} )); then
error "$(gettext "Integrity checks (%s) differ in size from the source array.")" "$integ"
exit 1 # TODO: error code
else
return 1
fi
}
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