src/core/sipe-sign.c

   1 /*
   2  * @file sipe-sign.c
   3  *
   4  * pidgin-sipe
   5  *
   6  * Copyright (C) 2011-2013 SIPE Project <http://sipe.sourceforge.net/>
   7  * Copyright (C) 2008 Novell, Inc.
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02111-1301  USA
  22  */
  23
  24 #include <string.h>
  25
  26 #include <glib.h>
  27
  28 #include "sipmsg.h"
  29 #include "sipe-backend.h"
  30 #include "sipe-sign.h"
  31
  32 static gchar * const empty_string = "";
  33
  34 void sipmsg_breakdown_parse(struct sipmsg_breakdown * msg, gchar * realm, gchar * target,
  35                             const gchar *protocol)
  36 {
  37         const gchar * hdr;
  38         if (msg == NULL || msg->msg == NULL) {
  39                 SIPE_DEBUG_INFO_NOFORMAT("sipmsg_breakdown_parse msg or msg->msg is NULL");
  40                 return;
  41         }
  42
  43         msg->rand = msg->num = msg->realm = msg->target_name =
  44                 msg->cseq = msg->from_url = msg->from_tag = msg->to_url = msg->to_tag =
  45                 msg->p_assertet_identity_sip_uri = msg->p_assertet_identity_tel_uri = empty_string;
  46         msg->call_id = msg->expires = empty_string;
  47
  48         if ((hdr = sipmsg_find_header(msg->msg, "Proxy-Authorization")) ||
  49             (hdr = sipmsg_find_header(msg->msg, "Proxy-Authentication-Info")) ||
  50             (hdr = sipmsg_find_header(msg->msg, "Authentication-Info")) ) {
  51                 msg->protocol = sipmsg_find_part_of_header(hdr, NULL, " ", empty_string);
  52                 msg->rand   = sipmsg_find_part_of_header(hdr, "rand=\"", "\"", empty_string);
  53                 msg->num    = sipmsg_find_part_of_header(hdr, "num=\"", "\"", empty_string);
  54                 msg->realm  = sipmsg_find_part_of_header(hdr, "realm=\"", "\"", empty_string);
  55                 msg->target_name = sipmsg_find_part_of_header(hdr, "targetname=\"", "\"", empty_string);
  56         } else {
  57                 msg->protocol = g_strdup(protocol);
  58                 msg->realm = g_strdup(realm);
  59                 msg->target_name = g_strdup(target);
  60         }
  61
  62         msg->call_id = sipmsg_find_header(msg->msg, "Call-ID");
  63
  64         hdr = sipmsg_find_header(msg->msg, "CSeq");
  65         if (NULL != hdr) {
  66                 msg->cseq = sipmsg_find_part_of_header(hdr, NULL, " ", empty_string);
  67         }
  68
  69         hdr = sipmsg_find_header(msg->msg, "From");
  70         if (NULL != hdr) {
  71                 msg->from_url = sipmsg_find_part_of_header(hdr, "<", ">", empty_string);
  72                 msg->from_tag = sipmsg_find_part_of_header(hdr, ";tag=", ";", empty_string);
  73         }
  74
  75         hdr = sipmsg_find_header(msg->msg, "To");
  76         if (NULL != hdr) {
  77                 msg->to_url = sipmsg_find_part_of_header(hdr, "<", ">", empty_string);
  78                 msg->to_tag = sipmsg_find_part_of_header(hdr, ";tag=", ";", empty_string);
  79         }
  80
  81         hdr = sipmsg_find_header(msg->msg, "P-Asserted-Identity");
  82         if (NULL == hdr) {
  83                 hdr = sipmsg_find_header(msg->msg, "P-Preferred-Identity");
  84         }
  85         if (NULL != hdr) {
  86                 gchar *sip_uri = NULL;
  87                 gchar *tel_uri = NULL;
  88
  89                 sipmsg_parse_p_asserted_identity(hdr, &sip_uri, &tel_uri);
  90                 if (sip_uri)
  91                         msg->p_assertet_identity_sip_uri = sip_uri;
  92                 if (tel_uri)
  93                         msg->p_assertet_identity_tel_uri = tel_uri;
  94         }
  95
  96         msg->expires = sipmsg_find_header(msg->msg, "Expires");
  97 }
  98
  99 void
 100 sipmsg_breakdown_free(struct sipmsg_breakdown * msg)
 101 {
 102         if (msg->protocol != empty_string)
 103                 g_free(msg->protocol);
 104         if (msg->rand != empty_string)
 105                 g_free(msg->rand);
 106         if (msg->num != empty_string)
 107                 g_free(msg->num);
 108         if (msg->realm != empty_string)
 109                 g_free(msg->realm);
 110         if (msg->target_name != empty_string)
 111                 g_free(msg->target_name);
 112
 113         // straight from header
 114         //g_free(msg->call_id);
 115
 116         if (msg->cseq != empty_string)
 117                 g_free(msg->cseq);
 118         if (msg->from_url != empty_string)
 119                 g_free(msg->from_url);
 120         if (msg->from_tag != empty_string)
 121                 g_free(msg->from_tag);
 122         if (msg->to_url != empty_string)
 123                 g_free(msg->to_url);
 124         if (msg->to_tag != empty_string)
 125                 g_free(msg->to_tag);
 126
 127         if (msg->p_assertet_identity_sip_uri != empty_string)
 128                 g_free(msg->p_assertet_identity_sip_uri);
 129         if (msg->p_assertet_identity_tel_uri != empty_string)
 130                 g_free(msg->p_assertet_identity_tel_uri);
 131
 132         // straight from header
 133         //g_free (msg->expires);
 134 }
 135
 136 gchar *
 137 sipmsg_breakdown_get_string(int version,
 138                             struct sipmsg_breakdown * msgbd)
 139 {
 140         gchar *response_str;
 141         gchar *msg;
 142         if (msgbd->realm == empty_string || msgbd->realm == NULL) {
 143                 SIPE_DEBUG_INFO_NOFORMAT("realm NULL, so returning NULL signature string");
 144                 return NULL;
 145         }
 146
 147         response_str = msgbd->msg->response != 0 ? g_strdup_printf("<%d>", msgbd->msg->response) : empty_string;
 148         if (version < 3) {
 149                 msg = g_strdup_printf(
 150                         "<%s><%s><%s><%s><%s><%s><%s><%s><%s><%s><%s>" // 1 - 11
 151                         "<%s>%s", // 12 - 13
 152                         msgbd->protocol, msgbd->rand, msgbd->num, msgbd->realm, msgbd->target_name, msgbd->call_id, msgbd->cseq,
 153                         msgbd->msg->method, msgbd->from_url, msgbd->from_tag, msgbd->to_tag,
 154                         msgbd->expires ? msgbd->expires : empty_string, response_str
 155                 );
 156         } else {
 157                 msg = g_strdup_printf(
 158                         "<%s><%s><%s><%s><%s><%s><%s><%s><%s><%s><%s><%s><%s><%s>" // 1 - 14
 159                         "<%s>%s", // 15 - 16
 160                         msgbd->protocol, msgbd->rand, msgbd->num, msgbd->realm, msgbd->target_name, msgbd->call_id, msgbd->cseq,
 161                         msgbd->msg->method, msgbd->from_url, msgbd->from_tag, msgbd->to_url, msgbd->to_tag,
 162                         msgbd->p_assertet_identity_sip_uri, msgbd->p_assertet_identity_tel_uri,
 163                         msgbd->expires ? msgbd->expires : empty_string, response_str
 164                 );
 165         }
 166
 167         if (response_str != empty_string) {
 168                 g_free(response_str);
 169         }
 170
 171         return msg;
 172 }
 173
 174 /*
 175   Local Variables:
 176   mode: c
 177   c-file-style: "bsd"
 178   indent-tabs-mode: t
 179   tab-width: 8
 180   End:
 181 */