src/core/sipe-sign.c

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