1// SPDX-License-Identifier: GPL-2.0-or-later
 2/* Null security operations.
 3 *
 4 * Copyright (C) 2016 Red Hat, Inc. All Rights Reserved.
 5 * Written by David Howells (dhowells@redhat.com)
 
 
 
 
 
 6 */
 7
 8#include <net/af_rxrpc.h>
 9#include "ar-internal.h"
10
11static int none_init_connection_security(struct rxrpc_connection *conn,
12					 struct rxrpc_key_token *token)
13{
14	return 0;
15}
16
17/*
18 * Allocate an appropriately sized buffer for the amount of data remaining.
19 */
20static struct rxrpc_txbuf *none_alloc_txbuf(struct rxrpc_call *call, size_t remain, gfp_t gfp)
21{
22	return rxrpc_alloc_data_txbuf(call, min_t(size_t, remain, RXRPC_JUMBO_DATALEN), 1, gfp);
23}
24
25static int none_secure_packet(struct rxrpc_call *call, struct rxrpc_txbuf *txb)
 
 
 
26{
27	return 0;
28}
29
30static int none_verify_packet(struct rxrpc_call *call, struct sk_buff *skb)
 
 
31{
32	struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
33
34	sp->flags |= RXRPC_RX_VERIFIED;
35	return 0;
36}
37
38static void none_free_call_crypto(struct rxrpc_call *call)
 
39{
40}
41
42static int none_respond_to_challenge(struct rxrpc_connection *conn,
43				     struct sk_buff *skb)
 
44{
45	return rxrpc_abort_conn(conn, skb, RX_PROTOCOL_ERROR, -EPROTO,
46				rxrpc_eproto_rxnull_challenge);
47}
48
49static int none_verify_response(struct rxrpc_connection *conn,
50				struct sk_buff *skb)
 
51{
52	return rxrpc_abort_conn(conn, skb, RX_PROTOCOL_ERROR, -EPROTO,
53				rxrpc_eproto_rxnull_response);
54}
55
56static void none_clear(struct rxrpc_connection *conn)
57{
58}
59
60static int none_init(void)
61{
62	return 0;
63}
64
65static void none_exit(void)
66{
67}
68
69/*
70 * RxRPC Kerberos-based security
71 */
72const struct rxrpc_security rxrpc_no_security = {
73	.name				= "none",
74	.security_index			= RXRPC_SECURITY_NONE,
75	.init				= none_init,
76	.exit				= none_exit,
77	.init_connection_security	= none_init_connection_security,
78	.free_call_crypto		= none_free_call_crypto,
79	.alloc_txbuf			= none_alloc_txbuf,
80	.secure_packet			= none_secure_packet,
81	.verify_packet			= none_verify_packet,
 
82	.respond_to_challenge		= none_respond_to_challenge,
83	.verify_response		= none_verify_response,
84	.clear				= none_clear,
85};

 
 1/* Null security operations.
 2 *
 3 * Copyright (C) 2016 Red Hat, Inc. All Rights Reserved.
 4 * Written by David Howells (dhowells@redhat.com)
 5 *
 6 * This program is free software; you can redistribute it and/or
 7 * modify it under the terms of the GNU General Public Licence
 8 * as published by the Free Software Foundation; either version
 9 * 2 of the Licence, or (at your option) any later version.
10 */
11
12#include <net/af_rxrpc.h>
13#include "ar-internal.h"
14
15static int none_init_connection_security(struct rxrpc_connection *conn)
 
16{
17	return 0;
18}
19
20static int none_prime_packet_security(struct rxrpc_connection *conn)
 
 
 
21{
22	return 0;
23}
24
25static int none_secure_packet(struct rxrpc_call *call,
26			      struct sk_buff *skb,
27			      size_t data_size,
28			      void *sechdr)
29{
30	return 0;
31}
32
33static int none_verify_packet(struct rxrpc_call *call, struct sk_buff *skb,
34			      unsigned int offset, unsigned int len,
35			      rxrpc_seq_t seq, u16 expected_cksum)
36{
 
 
 
37	return 0;
38}
39
40static void none_locate_data(struct rxrpc_call *call, struct sk_buff *skb,
41			     unsigned int *_offset, unsigned int *_len)
42{
43}
44
45static int none_respond_to_challenge(struct rxrpc_connection *conn,
46				     struct sk_buff *skb,
47				     u32 *_abort_code)
48{
49	*_abort_code = RX_PROTOCOL_ERROR;
50	return -EPROTO;
51}
52
53static int none_verify_response(struct rxrpc_connection *conn,
54				struct sk_buff *skb,
55				u32 *_abort_code)
56{
57	*_abort_code = RX_PROTOCOL_ERROR;
58	return -EPROTO;
59}
60
61static void none_clear(struct rxrpc_connection *conn)
62{
63}
64
65static int none_init(void)
66{
67	return 0;
68}
69
70static void none_exit(void)
71{
72}
73
74/*
75 * RxRPC Kerberos-based security
76 */
77const struct rxrpc_security rxrpc_no_security = {
78	.name				= "none",
79	.security_index			= RXRPC_SECURITY_NONE,
80	.init				= none_init,
81	.exit				= none_exit,
82	.init_connection_security	= none_init_connection_security,
83	.prime_packet_security		= none_prime_packet_security,
 
84	.secure_packet			= none_secure_packet,
85	.verify_packet			= none_verify_packet,
86	.locate_data			= none_locate_data,
87	.respond_to_challenge		= none_respond_to_challenge,
88	.verify_response		= none_verify_response,
89	.clear				= none_clear,
90};