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Linux/net/rxrpc/insecure.c

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  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 };
 97 

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