Signed-off-by: Michał Górny <mgo...@gentoo.org>
---
eclass/verify-sig.eclass | 55 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 55 insertions(+)
diff --git a/eclass/verify-sig.eclass b/eclass/verify-sig.eclass
index 8445f4e26440..b6dd31fa83a1 100644
--- a/eclass/verify-sig.eclass
+++ b/eclass/verify-sig.eclass
@@ -143,6 +143,61 @@ verify-sig_verify_message() {
die "PGP signature verification failed"
}
+# @FUNCTION: verify-sig_verify_signed_checksums
+# @USAGE: <checksum-file> <algo> <files> [<key-file>]
+# @DESCRIPTION:
+# Verify the checksums for all files listed in the space-separated list
+# <files> (akin to ${A}) using a PGP-signed <checksum-file>. <algo>
+# specified the checksum algorithm (e.g. sha256). <key-file> can either
+# be passed directly, or it defaults to VERIFY_SIG_OPENPGP_KEY_PATH.
+#
+# The function dies if PGP verification fails, the checksum file
+# contains unsigned data, one of the files do not match checksums
+# or are missing from the checksum file.
+verify-sig_verify_signed_checksums() {
+ local checksum_file=${1}
+ local algo=${2}
+ local files=()
+ read -r -d '' -a files <<<"${3}"
+ local key=${4:-${VERIFY_SIG_OPENPGP_KEY_PATH}}
+
+ local chksum_prog chksum_len
+ case ${algo} in
+ sha256)
+ chksum_prog=sha256sum
+ chksum_len=64
+ ;;
+ *)
+ die "${FUNCNAME}: unknown checksum algo ${algo}"
+ ;;
+ esac
+
+ [[ -n ${key} ]] ||
+ die "${FUNCNAME}: no key passed and VERIFY_SIG_OPENPGP_KEY_PATH
unset"
+
+ verify-sig_verify_message "${checksum_file}" "${key}"
+
+ local checksum filename junk ret=0 count=0
+ while read -r checksum filename junk; do
+ [[ ${#checksum} -eq ${chksum_len} ]] || continue
+ [[ -z ${checksum//[0-9a-f]} ]] || continue
+ has "${filename}" "${files[@]}" || continue
+ [[ -z ${junk} ]] || continue
+
+ "${chksum_prog}" -c --strict - <<<"${checksum} ${filename}"
+ if [[ ${?} -eq 0 ]]; then
+ (( count++ ))
+ else
+ ret=1
+ fi
+ done <"${checksum_file}"
+
+ [[ ${ret} -eq 0 ]] ||
+ die "${FUNCNAME}: at least one file did not verify successfully"
+ [[ ${count} -eq ${#files[@]} ]] ||
+ die "${FUNCNAME}: checksums for some of the specified files
were missing"
+}
+
# @FUNCTION: verify-sig_src_unpack
# @DESCRIPTION:
# Default src_unpack override that verifies signatures for all
--
2.29.2
