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certs: move scripts/check-blacklist-hashes.awk to certs/

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This script is only used in certs/Makefile, so certs/ is a better
home for it.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Mickaël Salaün <mic@linux.microsoft.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
This commit is contained in:
Masahiro Yamada
2022-06-12 02:22:32 +09:00
parent 32346491dd
commit 9008a67666
3 changed files with 1 additions and 2 deletions
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2
certs/Makefile
View File

@@ -13,7 +13,7 @@ CFLAGS_blacklist_hashes.o := -I $(obj)
quiet_cmd_check_and_copy_blacklist_hash_list = GEN $@
cmd_check_and_copy_blacklist_hash_list = \
$(AWK) -f $(srctree)/scripts/check-blacklist-hashes.awk $(CONFIG_SYSTEM_BLACKLIST_HASH_LIST) >&2; \
$(AWK) -f $(srctree)/$(src)/check-blacklist-hashes.awk $(CONFIG_SYSTEM_BLACKLIST_HASH_LIST) >&2; \
cat $(CONFIG_SYSTEM_BLACKLIST_HASH_LIST) > $@
$(obj)/blacklist_hash_list: $(CONFIG_SYSTEM_BLACKLIST_HASH_LIST) FORCE

37
certs/check-blacklist-hashes.awk Executable file
View File

@@ -0,0 +1,37 @@
#!/usr/bin/awk -f
# SPDX-License-Identifier: GPL-2.0
#
# Copyright © 2020, Microsoft Corporation. All rights reserved.
#
# Author: Mickaël Salaün <mic@linux.microsoft.com>
#
# Check that a CONFIG_SYSTEM_BLACKLIST_HASH_LIST file contains a valid array of
# hash strings. Such string must start with a prefix ("tbs" or "bin"), then a
# colon (":"), and finally an even number of hexadecimal lowercase characters
# (up to 128).
BEGIN {
RS = ","
}
{
if (!match($0, "^[ \t\n\r]*\"([^\"]*)\"[ \t\n\r]*$", part1)) {
print "Not a string (item " NR "):", $0;
exit 1;
}
if (!match(part1[1], "^(tbs|bin):(.*)$", part2)) {
print "Unknown prefix (item " NR "):", part1[1];
exit 1;
}
if (!match(part2[2], "^([0-9a-f]+)$", part3)) {
print "Not a lowercase hexadecimal string (item " NR "):", part2[2];
exit 1;
}
if (length(part3[1]) > 128) {
print "Hash string too long (item " NR "):", part3[1];
exit 1;
}
if (length(part3[1]) % 2 == 1) {
print "Not an even number of hexadecimal characters (item " NR "):", part3[1];
exit 1;
}
}