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
none_init_connection_security(struct rxrpc_connection * conn,struct rxrpc_key_token * token)11 static 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 */
none_how_much_data(struct rxrpc_call * call,size_t remain,size_t * _buf_size,size_t * _data_size,size_t * _offset)20 static 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
none_secure_packet(struct rxrpc_call * call,struct rxrpc_txbuf * txb)28 static int none_secure_packet(struct rxrpc_call *call, struct rxrpc_txbuf *txb)
29 {
30 return 0;
31 }
32
none_verify_packet(struct rxrpc_call * call,struct sk_buff * skb)33 static 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
none_free_call_crypto(struct rxrpc_call * call)41 static void none_free_call_crypto(struct rxrpc_call *call)
42 {
43 }
44
none_respond_to_challenge(struct rxrpc_connection * conn,struct sk_buff * skb)45 static 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
none_verify_response(struct rxrpc_connection * conn,struct sk_buff * skb)52 static 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
none_clear(struct rxrpc_connection * conn)59 static void none_clear(struct rxrpc_connection *conn)
60 {
61 }
62
none_init(void)63 static int none_init(void)
64 {
65 return 0;
66 }
67
none_exit(void)68 static void none_exit(void)
69 {
70 }
71
72 /*
73 * RxRPC Kerberos-based security
74 */
75 const 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 };
89
