net/rxrpc/insecure.c

   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
  15 static int none_init_connection_security(struct rxrpc_connection *conn)
  16 {
  17         return 0;
  18 }
  19
  20 static int none_prime_packet_security(struct rxrpc_connection *conn)
  21 {
  22         return 0;
  23 }
  24
  25 static 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
  33 static 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
  40 static void none_locate_data(struct rxrpc_call *call, struct sk_buff *skb,
  41                              unsigned int *_offset, unsigned int *_len)
  42 {
  43 }
  44
  45 static 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
  53 static 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
  61 static void none_clear(struct rxrpc_connection *conn)
  62 {
  63 }
  64
  65 static int none_init(void)
  66 {
  67         return 0;
  68 }
  69
  70 static void none_exit(void)
  71 {
  72 }
  73
  74 /*
  75  * RxRPC Kerberos-based security
  76  */
  77 const 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 };