Linux kernel mirror (for testing)
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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 u32 *_abort_code)
48{
49 struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
50
51 trace_rxrpc_rx_eproto(NULL, sp->hdr.serial,
52 tracepoint_string("chall_none"));
53 return -EPROTO;
54}
55
56static int none_verify_response(struct rxrpc_connection *conn,
57 struct sk_buff *skb,
58 u32 *_abort_code)
59{
60 struct rxrpc_skb_priv *sp = rxrpc_skb(skb);
61
62 trace_rxrpc_rx_eproto(NULL, sp->hdr.serial,
63 tracepoint_string("resp_none"));
64 return -EPROTO;
65}
66
67static void none_clear(struct rxrpc_connection *conn)
68{
69}
70
71static int none_init(void)
72{
73 return 0;
74}
75
76static void none_exit(void)
77{
78}
79
80/*
81 * RxRPC Kerberos-based security
82 */
83const struct rxrpc_security rxrpc_no_security = {
84 .name = "none",
85 .security_index = RXRPC_SECURITY_NONE,
86 .init = none_init,
87 .exit = none_exit,
88 .init_connection_security = none_init_connection_security,
89 .free_call_crypto = none_free_call_crypto,
90 .how_much_data = none_how_much_data,
91 .secure_packet = none_secure_packet,
92 .verify_packet = none_verify_packet,
93 .respond_to_challenge = none_respond_to_challenge,
94 .verify_response = none_verify_response,
95 .clear = none_clear,
96};