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 * Work out how much data we can put in an unsecured packet.
19 */
20static int none_how_much_data(struct rxrpc_call *call, size_t remain,
21			       size_t *_buf_size, size_t *_data_size, size_t *_offset)
22{
23	*_buf_size = *_data_size = min_t(size_t, remain, RXRPC_JUMBO_DATALEN);
24	*_offset = 0;
25	return 0;
26}
27
28static int none_secure_packet(struct rxrpc_call *call, struct rxrpc_txbuf *txb)
 
29{
30	return 0;
31}
32
33static int none_verify_packet(struct rxrpc_call *call, struct sk_buff *skb)
 
 
34{
35	struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
36
37	sp->flags |= RXRPC_RX_VERIFIED;
38	return 0;
39}
40
41static void none_free_call_crypto(struct rxrpc_call *call)
42{
43}
44
 
 
 
 
 
45static int none_respond_to_challenge(struct rxrpc_connection *conn,
46				     struct sk_buff *skb)
 
47{
48	return rxrpc_abort_conn(conn, skb, RX_PROTOCOL_ERROR, -EPROTO,
49				rxrpc_eproto_rxnull_challenge);
 
 
 
50}
51
52static int none_verify_response(struct rxrpc_connection *conn,
53				struct sk_buff *skb)
 
54{
55	return rxrpc_abort_conn(conn, skb, RX_PROTOCOL_ERROR, -EPROTO,
56				rxrpc_eproto_rxnull_response);
 
 
 
57}
58
59static void none_clear(struct rxrpc_connection *conn)
60{
61}
62
63static int none_init(void)
64{
65	return 0;
66}
67
68static void none_exit(void)
69{
70}
71
72/*
73 * RxRPC Kerberos-based security
74 */
75const struct rxrpc_security rxrpc_no_security = {
76	.name				= "none",
77	.security_index			= RXRPC_SECURITY_NONE,
78	.init				= none_init,
79	.exit				= none_exit,
80	.init_connection_security	= none_init_connection_security,
81	.free_call_crypto		= none_free_call_crypto,
82	.how_much_data			= none_how_much_data,
83	.secure_packet			= none_secure_packet,
84	.verify_packet			= none_verify_packet,
 
85	.respond_to_challenge		= none_respond_to_challenge,
86	.verify_response		= none_verify_response,
87	.clear				= none_clear,
88};

  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 * Work out how much data we can put in an unsecured packet.
 19 */
 20static int none_how_much_data(struct rxrpc_call *call, size_t remain,
 21			       size_t *_buf_size, size_t *_data_size, size_t *_offset)
 22{
 23	*_buf_size = *_data_size = min_t(size_t, remain, RXRPC_JUMBO_DATALEN);
 24	*_offset = 0;
 25	return 0;
 26}
 27
 28static int none_secure_packet(struct rxrpc_call *call, struct sk_buff *skb,
 29			      size_t data_size)
 30{
 31	return 0;
 32}
 33
 34static int none_verify_packet(struct rxrpc_call *call, struct sk_buff *skb,
 35			      unsigned int offset, unsigned int len,
 36			      rxrpc_seq_t seq, u16 expected_cksum)
 37{
 
 
 
 38	return 0;
 39}
 40
 41static void none_free_call_crypto(struct rxrpc_call *call)
 42{
 43}
 44
 45static void none_locate_data(struct rxrpc_call *call, struct sk_buff *skb,
 46			     unsigned int *_offset, unsigned int *_len)
 47{
 48}
 49
 50static int none_respond_to_challenge(struct rxrpc_connection *conn,
 51				     struct sk_buff *skb,
 52				     u32 *_abort_code)
 53{
 54	struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
 55
 56	trace_rxrpc_rx_eproto(NULL, sp->hdr.serial,
 57			      tracepoint_string("chall_none"));
 58	return -EPROTO;
 59}
 60
 61static int none_verify_response(struct rxrpc_connection *conn,
 62				struct sk_buff *skb,
 63				u32 *_abort_code)
 64{
 65	struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
 66
 67	trace_rxrpc_rx_eproto(NULL, sp->hdr.serial,
 68			      tracepoint_string("resp_none"));
 69	return -EPROTO;
 70}
 71
 72static void none_clear(struct rxrpc_connection *conn)
 73{
 74}
 75
 76static int none_init(void)
 77{
 78	return 0;
 79}
 80
 81static void none_exit(void)
 82{
 83}
 84
 85/*
 86 * RxRPC Kerberos-based security
 87 */
 88const struct rxrpc_security rxrpc_no_security = {
 89	.name				= "none",
 90	.security_index			= RXRPC_SECURITY_NONE,
 91	.init				= none_init,
 92	.exit				= none_exit,
 93	.init_connection_security	= none_init_connection_security,
 94	.free_call_crypto		= none_free_call_crypto,
 95	.how_much_data			= none_how_much_data,
 96	.secure_packet			= none_secure_packet,
 97	.verify_packet			= none_verify_packet,
 98	.locate_data			= none_locate_data,
 99	.respond_to_challenge		= none_respond_to_challenge,
100	.verify_response		= none_verify_response,
101	.clear				= none_clear,
102};