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         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
  56 static 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
  67 static void none_clear(struct rxrpc_connection *conn)
  68 {
  69 }
  70
  71 static int none_init(void)
  72 {
  73         return 0;
  74 }
  75
  76 static void none_exit(void)
  77 {
  78 }
  79
  80 /*
  81  * RxRPC Kerberos-based security
  82  */
  83 const 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         .prime_packet_security          = none_prime_packet_security,
  90         .secure_packet                  = none_secure_packet,
  91         .verify_packet                  = none_verify_packet,
  92         .locate_data                    = none_locate_data,
  93         .respond_to_challenge           = none_respond_to_challenge,
  94         .verify_response                = none_verify_response,
  95         .clear                          = none_clear,
  96 };