ipsec-tools/racoon/isakmp_unity.c

   1 /* $Id: isakmp_unity.c,v 1.5.4.1 2005/05/10 09:45:46 manubsd Exp $ */
   2
   3 /*
   4  * Copyright (C) 2004 Emmanuel Dreyfus
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the project nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include "config.h"
  33
  34 #include <sys/types.h>
  35 #include <sys/param.h>
  36 #include <sys/socket.h>
  37 #include <sys/queue.h>
  38
  39 #include <netinet/in.h>
  40 #include <arpa/inet.h>
  41
  42 #include <stdlib.h>
  43 #include <stdio.h>
  44 #include <fcntl.h>
  45 #include <string.h>
  46 #include <errno.h>
  47 #if TIME_WITH_SYS_TIME
  48 # include <sys/time.h>
  49 # include <time.h>
  50 #else
  51 # if HAVE_SYS_TIME_H
  52 #  include <sys/time.h>
  53 # else
  54 #  include <time.h>
  55 # endif
  56 #endif
  57 #include <netdb.h>
  58 #ifdef HAVE_UNISTD_H
  59 #include <unistd.h>
  60 #endif
  61 #include <ctype.h>
  62
  63 #include "var.h"
  64 #include "misc.h"
  65 #include "vmbuf.h"
  66 #include "plog.h"
  67 #include "sockmisc.h"
  68 #include "schedule.h"
  69 #include "debug.h"
  70
  71 #include "isakmp_var.h"
  72 #include "isakmp.h"
  73 #include "handler.h"
  74 #include "isakmp_xauth.h"
  75 #include "isakmp_unity.h"
  76 #include "isakmp_cfg.h"
  77 #include "strnames.h"
  78
  79 vchar_t *
  80 isakmp_unity_req(iph1, attr)
  81         struct ph1handle *iph1;
  82         struct isakmp_data *attr;
  83 {
  84         int type;
  85         vchar_t *reply_attr = NULL;
  86
  87         if ((iph1->mode_cfg->flags & ISAKMP_CFG_VENDORID_UNITY) == 0) {
  88                 plog(LLV_ERROR, LOCATION, NULL,
  89                     "Unity mode config request but the peer "
  90                     "did not declare itself as  unity compliant\n");
  91                 return NULL;
  92         }
  93
  94         type = ntohs(attr->type);
  95
  96         /* Handle short attributes */
  97         if ((type & ISAKMP_GEN_MASK) == ISAKMP_GEN_TV) {
  98                 type &= ~ISAKMP_GEN_MASK;
  99
 100                 plog(LLV_DEBUG, LOCATION, NULL,
 101                      "Short attribute %d = %d\n",
 102                      type, ntohs(attr->lorv));
 103
 104                 switch (type) {
 105                 default:
 106                         plog(LLV_DEBUG, LOCATION, NULL,
 107                              "Ignored short attribute %d\n", type);
 108                         break;
 109                 }
 110
 111                 return reply_attr;
 112         }
 113
 114         switch(type) {
 115         case UNITY_BANNER: {
 116 #define MAXMOTD 65536
 117                 char buf[MAXMOTD + 1];
 118                 int fd;
 119                 char *filename = &isakmp_cfg_config.motd[0];
 120                 size_t len;
 121
 122                 if ((fd = open(filename, O_RDONLY, 0)) == -1) {
 123                         plog(LLV_ERROR, LOCATION, NULL,
 124                             "Cannot open \"%s\"\n", filename);
 125                         return NULL;
 126                 }
 127
 128                 if ((len = read(fd, buf, MAXMOTD)) == -1) {
 129                         plog(LLV_ERROR, LOCATION, NULL,
 130                             "Cannot read \"%s\"\n", filename);
 131                         close(fd);
 132                         return NULL;
 133                 }
 134                 close(fd);
 135
 136                 buf[len] = '\0';
 137                 reply_attr = isakmp_cfg_string(iph1, attr, buf);
 138
 139                 break;
 140         }
 141
 142         case UNITY_PFS:
 143                 reply_attr = isakmp_cfg_short(iph1, attr,
 144                     isakmp_cfg_config.pfs_group);
 145                 break;
 146
 147         case UNITY_SAVE_PASSWD:
 148                 reply_attr = isakmp_cfg_short(iph1, attr,
 149                     isakmp_cfg_config.save_passwd);
 150                 break;
 151
 152         case UNITY_DDNS_HOSTNAME:
 153                 reply_attr = isakmp_cfg_copy(iph1, attr);
 154                 break;
 155
 156         case UNITY_DEF_DOMAIN:
 157         case UNITY_FW_TYPE:
 158         case UNITY_SPLITDNS_NAME:
 159         case UNITY_SPLIT_INCLUDE:
 160         case UNITY_NATT_PORT:
 161         case UNITY_BACKUP_SERVERS:
 162         default:
 163                 plog(LLV_DEBUG, LOCATION, NULL,
 164                      "Ignored attribute %d\n", type);
 165                 return NULL;
 166                 break;
 167         }
 168
 169         return reply_attr;
 170 }
 171
 172