src/charon/sa/ike_sa_id.c

   1 /**
   2  * @file ike_sa_id.c
   3  *
   4  * @brief Implementation of ike_sa_id_t.
   5  *
   6  */
   7
   8 /*
   9  * Copyright (C) 2005-2006 Martin Willi
  10  * Copyright (C) 2005 Jan Hutter
  11  * Hochschule fuer Technik Rapperswil
  12  *
  13  * This program is free software; you can redistribute it and/or modify it
  14  * under the terms of the GNU General Public License as published by the
  15  * Free Software Foundation; either version 2 of the License, or (at your
  16  * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
  17  *
  18  * This program is distributed in the hope that it will be useful, but
  19  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  20  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  21  * for more details.
  22  */
  23
  24
  25 #include "ike_sa_id.h"
  26
  27 #include <printf.h>
  28 #include <stdio.h>
  29
  30
  31 typedef struct private_ike_sa_id_t private_ike_sa_id_t;
  32
  33 /**
  34  * Private data of an ike_sa_id_t object.
  35  */
  36 struct private_ike_sa_id_t {
  37         /**
  38          * Public interface of ike_sa_id_t.
  39          */
  40         ike_sa_id_t public;
  41
  42          /**
  43           * SPI of Initiator.
  44           */
  45         u_int64_t initiator_spi;
  46
  47          /**
  48           * SPI of Responder.
  49           */
  50         u_int64_t responder_spi;
  51
  52         /**
  53          * Role for specific IKE_SA.
  54          */
  55         bool is_initiator_flag;
  56 };
  57
  58 /**
  59  * Implementation of ike_sa_id_t.set_responder_spi.
  60  */
  61 static void set_responder_spi (private_ike_sa_id_t *this, u_int64_t responder_spi)
  62 {
  63         this->responder_spi = responder_spi;
  64 }
  65
  66 /**
  67  * Implementation of ike_sa_id_t.set_initiator_spi.
  68  */
  69 static void set_initiator_spi(private_ike_sa_id_t *this, u_int64_t initiator_spi)
  70 {
  71         this->initiator_spi = initiator_spi;
  72 }
  73
  74 /**
  75  * Implementation of ike_sa_id_t.get_initiator_spi.
  76  */
  77 static u_int64_t get_initiator_spi (private_ike_sa_id_t *this)
  78 {
  79         return this->initiator_spi;
  80 }
  81
  82 /**
  83  * Implementation of ike_sa_id_t.get_responder_spi.
  84  */
  85 static u_int64_t get_responder_spi (private_ike_sa_id_t *this)
  86 {
  87         return this->responder_spi;
  88 }
  89
  90 /**
  91  * Implementation of ike_sa_id_t.equals.
  92  */
  93 static bool equals (private_ike_sa_id_t *this, private_ike_sa_id_t *other)
  94 {
  95         if (other == NULL)
  96         {
  97                 return FALSE;
  98         }
  99         if ((this->is_initiator_flag == other->is_initiator_flag) &&
 100                 (this->initiator_spi == other->initiator_spi) &&
 101                 (this->responder_spi == other->responder_spi))
 102         {
 103                 /* private_ike_sa_id's are equal */
 104                 return TRUE;
 105         }
 106         else
 107         {
 108                 /* private_ike_sa_id's are not equal */
 109                 return FALSE;
 110         }
 111 }
 112
 113 /**
 114  * Implementation of ike_sa_id_t.replace_values.
 115  */
 116 static void replace_values(private_ike_sa_id_t *this, private_ike_sa_id_t *other)
 117 {
 118         this->initiator_spi = other->initiator_spi;
 119         this->responder_spi = other->responder_spi;
 120         this->is_initiator_flag = other->is_initiator_flag;
 121 }
 122
 123 /**
 124  * Implementation of ike_sa_id_t.is_initiator.
 125  */
 126 static bool is_initiator(private_ike_sa_id_t *this)
 127 {
 128         return this->is_initiator_flag;
 129 }
 130
 131 /**
 132  * Implementation of ike_sa_id_t.switch_initiator.
 133  */
 134 static bool switch_initiator(private_ike_sa_id_t *this)
 135 {
 136         if (this->is_initiator_flag)
 137         {
 138                 this->is_initiator_flag = FALSE;
 139         }
 140         else
 141         {
 142                 this->is_initiator_flag = TRUE;
 143         }
 144         return this->is_initiator_flag;
 145 }
 146
 147 /**
 148  * Implementation of ike_sa_id_t.clone.
 149  */
 150 static ike_sa_id_t* clone(private_ike_sa_id_t *this)
 151 {
 152         return ike_sa_id_create(this->initiator_spi, this->responder_spi, this->is_initiator_flag);
 153 }
 154
 155 /**
 156  * output handler in printf()
 157  */
 158 static int print(FILE *stream, const struct printf_info *info,
 159                                  const void *const *args)
 160 {
 161         private_ike_sa_id_t *this = *((private_ike_sa_id_t**)(args[0]));
 162
 163         if (this == NULL)
 164         {
 165                 return fprintf(stream, "(null)");
 166         }
 167         return fprintf(stream, "%llx:%llx[%c]",
 168                                    this->initiator_spi, this->responder_spi,
 169                                    this->is_initiator_flag ? 'i' : 'r');
 170 }
 171
 172 /**
 173  * register printf() handlers
 174  */
 175 static void __attribute__ ((constructor))print_register()
 176 {
 177         register_printf_function(PRINTF_IKE_SA_ID, print, arginfo_ptr);
 178 }
 179
 180 /**
 181  * Implementation of ike_sa_id_t.destroy.
 182  */
 183 static void destroy(private_ike_sa_id_t *this)
 184 {
 185         free(this);
 186 }
 187
 188 /*
 189  * Described in header.
 190  */
 191 ike_sa_id_t * ike_sa_id_create(u_int64_t initiator_spi, u_int64_t responder_spi, bool is_initiator_flag)
 192 {
 193         private_ike_sa_id_t *this = malloc_thing(private_ike_sa_id_t);
 194
 195         /* public functions */
 196         this->public.set_responder_spi = (void(*)(ike_sa_id_t*,u_int64_t)) set_responder_spi;
 197         this->public.set_initiator_spi = (void(*)(ike_sa_id_t*,u_int64_t)) set_initiator_spi;
 198         this->public.get_responder_spi = (u_int64_t(*)(ike_sa_id_t*)) get_responder_spi;
 199         this->public.get_initiator_spi = (u_int64_t(*)(ike_sa_id_t*)) get_initiator_spi;
 200         this->public.equals = (bool(*)(ike_sa_id_t*,ike_sa_id_t*)) equals;
 201         this->public.replace_values = (void(*)(ike_sa_id_t*,ike_sa_id_t*)) replace_values;
 202         this->public.is_initiator = (bool(*)(ike_sa_id_t*)) is_initiator;
 203         this->public.switch_initiator = (bool(*)(ike_sa_id_t*)) switch_initiator;
 204         this->public.clone = (ike_sa_id_t*(*)(ike_sa_id_t*)) clone;
 205         this->public.destroy = (void(*)(ike_sa_id_t*))destroy;
 206
 207         /* private data */
 208         this->initiator_spi = initiator_spi;
 209         this->responder_spi = responder_spi;
 210         this->is_initiator_flag = is_initiator_flag;
 211
 212         return &this->public;
 213 }