| # 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 |
| if (!match($0, "^[ \t\n\r]*\"([^\"]*)\"[ \t\n\r]*$", part1)) { |
| print "Not a string (item " NR "):", $0; |
| if (!match(part1[1], "^(tbs|bin):(.*)$", part2)) { |
| print "Unknown prefix (item " NR "):", part1[1]; |
| if (!match(part2[2], "^([0-9a-f]+)$", part3)) { |
| print "Not a lowercase hexadecimal string (item " NR "):", part2[2]; |
| if (length(part3[1]) > 128) { |
| print "Hash string too long (item " NR "):", part3[1]; |
| if (length(part3[1]) % 2 == 1) { |
| print "Not an even number of hexadecimal characters (item " NR "):", part3[1]; |