/*
* Check the content type OID
*/
int mscode_note_content_type(void *context, size_t hdrlen,
unsigned char tag,
const void *value, size_t vlen)
{
enum OID oid;
oid = look_up_OID(value, vlen);
if (oid == OID__NR) {
char buffer[50];
sprint_oid(value, vlen, buffer, sizeof(buffer));
pr_err("Unknown OID: %s\n", buffer);
return -EBADMSG;
}
/*
* pesign utility had a bug where it was putting
* OID_msIndividualSPKeyPurpose instead of OID_msPeImageDataObjId
* So allow both OIDs.
*/
if (oid != OID_msPeImageDataObjId &&
oid != OID_msIndividualSPKeyPurpose) {
pr_err("Unexpected content type OID %u\n", oid);
return -EBADMSG;
}
return 0;
}
/*
* Note the digest algorithm OID
*/
int mscode_note_digest_algo(void *context, size_t hdrlen,
unsigned char tag,
const void *value, size_t vlen)
{
struct pefile_context *ctx = context;
char buffer[50];
enum OID oid;
oid = look_up_OID(value, vlen);
switch (oid) {
case OID_md4:
ctx->digest_algo = HASH_ALGO_MD4;
break;
case OID_md5:
ctx->digest_algo = HASH_ALGO_MD5;
break;
case OID_sha1:
ctx->digest_algo = HASH_ALGO_SHA1;
break;
case OID_sha256:
ctx->digest_algo = HASH_ALGO_SHA256;
break;
case OID__NR:
sprint_oid(value, vlen, buffer, sizeof(buffer));
pr_err("Unknown OID: %s\n", buffer);
return -EBADMSG;
default:
pr_err("Unsupported content type: %u\n", oid);
return -ENOPKG;
}
return 0;
}
/*
* Note an OID when we find one for later processing when we know how
* to interpret it.
*/
int x509_note_OID(void *context, size_t hdrlen,
unsigned char tag,
const void *value, size_t vlen)
{
struct x509_parse_context *ctx = context;
ctx->last_oid = look_up_OID(value, vlen);
if (ctx->last_oid == OID__NR) {
char buffer[50];
sprint_oid(value, vlen, buffer, sizeof(buffer));
pr_debug("Unknown OID: [%lu] %s\n",
(unsigned long)value - ctx->data, buffer);
}
return 0;
}
