blob: 959b5b8f39cf00c93e91902c62b72cbd8ca17f60 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
#!/bin/bash
# Copyright 2018 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
. "$(dirname "$0")/common.sh"
set -e
usage() {
cat <<EOF
Usage: $PROG /path/to/target/dir /path/to/esp/dir
Verify signatures of UEFI binaries in the target directory.
EOF
if [[ $# -gt 0 ]]; then
error "$*"
exit 1
fi
exit 0
}
main() {
local target_dir="$1"
local esp_dir="$2"
if [[ $# -ne 2 ]]; then
usage "command takes exactly 1 args"
fi
if ! type -P sbverify &>/dev/null; then
die "Cannot verify UEFI signatures (sbverify not found)."
fi
local bootloader_dir="${target_dir}/efi/boot"
local syslinux_dir="${target_dir}/syslinux"
local kernel_dir="${target_dir}"
local gsetup_dir="${esp_dir}/EFI/Google/GSetup"
if [[ ! -f "${gsetup_dir}/pk/pk.der" ]]; then
warn "No PK cert"
exit 0
fi
local db_cert_der="${gsetup_dir}/db/db.der"
if [[ ! -f "${db_cert_der}" ]]; then
warn "No DB cert"
exit 0
fi
local working_dir="$(make_temp_dir)"
local cert="${working_dir}/cert.pem"
openssl x509 -in "${db_cert_der}" -inform DER -out "${cert}" -outform PEM
for efi_file in "${bootloader_dir}/"*".efi"; do
if [[ ! -f "${efi_file}" ]]; then
continue
fi
sbverify --cert "${cert}" "${efi_file}" ||
die "Verification failed: ${efi_file}"
done
for syslinux_kernel_file in "${syslinux_dir}/vmlinuz."?; do
if [[ ! -f "${syslinux_kernel_file}" ]]; then
continue
fi
sbverify --cert "${cert}" "${syslinux_kernel_file}" ||
warn "Verification failed: ${syslinux_kernel_file}"
done
local kernel_file="$(readlink -f "${kernel_dir}/vmlinuz")"
if [[ -f "${kernel_file}" ]]; then
sbverify --cert "${cert}" "${kernel_file}" ||
warn "Verification failed: ${kernel_file}"
fi
}
main "$@"
|
