diff options
Diffstat (limited to 'fs/smb/client/asn1.c')
-rw-r--r-- | fs/smb/client/asn1.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/fs/smb/client/asn1.c b/fs/smb/client/asn1.c new file mode 100644 index 0000000000..b5724ef9f1 --- /dev/null +++ b/fs/smb/client/asn1.c @@ -0,0 +1,63 @@ +// SPDX-License-Identifier: GPL-2.0-or-later + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/oid_registry.h> +#include "cifsglob.h" +#include "cifs_debug.h" +#include "cifsproto.h" +#include "cifs_spnego_negtokeninit.asn1.h" + +int +decode_negTokenInit(unsigned char *security_blob, int length, + struct TCP_Server_Info *server) +{ + if (asn1_ber_decoder(&cifs_spnego_negtokeninit_decoder, server, + security_blob, length) == 0) + return 1; + else + return 0; +} + +int cifs_gssapi_this_mech(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_spnego) { + char buf[50]; + + sprint_oid(value, vlen, buf, sizeof(buf)); + cifs_dbg(FYI, "Error decoding negTokenInit header: unexpected OID %s\n", + buf); + return -EBADMSG; + } + return 0; +} + +int cifs_neg_token_init_mech_type(void *context, size_t hdrlen, + unsigned char tag, + const void *value, size_t vlen) +{ + struct TCP_Server_Info *server = context; + enum OID oid; + + oid = look_up_OID(value, vlen); + if (oid == OID_mskrb5) + server->sec_mskerberos = true; + else if (oid == OID_krb5u2u) + server->sec_kerberosu2u = true; + else if (oid == OID_krb5) + server->sec_kerberos = true; + else if (oid == OID_ntlmssp) + server->sec_ntlmssp = true; + else { + char buf[50]; + + sprint_oid(value, vlen, buf, sizeof(buf)); + cifs_dbg(FYI, "Decoding negTokenInit: unsupported OID %s\n", + buf); + } + return 0; +} |