mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-25 05:34:00 +08:00
2565ca7f5e
Move functionality within load_system_certificate_list to a common function, so it can be reused in the future. DH Changes: - Added inclusion of common.h to common.c (Eric [1]). Signed-off-by: Eric Snowberg <eric.snowberg@oracle.com> Acked-by: Jarkko Sakkinen <jarkko@kernel.org> Signed-off-by: David Howells <dhowells@redhat.com> cc: keyrings@vger.kernel.org Link: https://lore.kernel.org/r/EDA280F9-F72D-4181-93C7-CDBE95976FF7@oracle.com/ [1] Link: https://lore.kernel.org/r/20200930201508.35113-2-eric.snowberg@oracle.com/ Link: https://lore.kernel.org/r/20210122181054.32635-3-eric.snowberg@oracle.com/ # v5 Link: https://lore.kernel.org/r/161428672825.677100.7545516389752262918.stgit@warthog.procyon.org.uk/ Link: https://lore.kernel.org/r/161433311696.902181.3599366124784670368.stgit@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/161529605850.163428.7786675680201528556.stgit@warthog.procyon.org.uk/ # v3
58 lines
1.2 KiB
C
58 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/key.h>
|
|
#include "common.h"
|
|
|
|
int load_certificate_list(const u8 cert_list[],
|
|
const unsigned long list_size,
|
|
const struct key *keyring)
|
|
{
|
|
key_ref_t key;
|
|
const u8 *p, *end;
|
|
size_t plen;
|
|
|
|
p = cert_list;
|
|
end = p + list_size;
|
|
while (p < end) {
|
|
/* Each cert begins with an ASN.1 SEQUENCE tag and must be more
|
|
* than 256 bytes in size.
|
|
*/
|
|
if (end - p < 4)
|
|
goto dodgy_cert;
|
|
if (p[0] != 0x30 &&
|
|
p[1] != 0x82)
|
|
goto dodgy_cert;
|
|
plen = (p[2] << 8) | p[3];
|
|
plen += 4;
|
|
if (plen > end - p)
|
|
goto dodgy_cert;
|
|
|
|
key = key_create_or_update(make_key_ref(keyring, 1),
|
|
"asymmetric",
|
|
NULL,
|
|
p,
|
|
plen,
|
|
((KEY_POS_ALL & ~KEY_POS_SETATTR) |
|
|
KEY_USR_VIEW | KEY_USR_READ),
|
|
KEY_ALLOC_NOT_IN_QUOTA |
|
|
KEY_ALLOC_BUILT_IN |
|
|
KEY_ALLOC_BYPASS_RESTRICTION);
|
|
if (IS_ERR(key)) {
|
|
pr_err("Problem loading in-kernel X.509 certificate (%ld)\n",
|
|
PTR_ERR(key));
|
|
} else {
|
|
pr_notice("Loaded X.509 cert '%s'\n",
|
|
key_ref_to_ptr(key)->description);
|
|
key_ref_put(key);
|
|
}
|
|
p += plen;
|
|
}
|
|
|
|
return 0;
|
|
|
|
dodgy_cert:
|
|
pr_err("Problem parsing in-kernel X.509 certificate list\n");
|
|
return 0;
|
|
}
|