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