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            P-Asserted-Identity: "Cullen Jennings" <sip:fluffy@cisco.com>
  81            P-Asserted-Identity: tel:+14085264000
  82         */
  83         hdr = sipmsg_find_header(msg->msg, "P-Asserted-Identity");
  84         if (NULL == hdr) {
  85                 hdr = sipmsg_find_header(msg->msg, "P-Preferred-Identity");
  86         }
  87         if (NULL != hdr) {
  88                 gchar *tmp = sipmsg_find_part_of_header(hdr, "<", ">", empty_string);
  89                 if (g_str_has_prefix(tmp, "sip:")) {
  90                         msg->p_assertet_identity_sip_uri = tmp;
  91                 } else if (g_str_has_prefix(tmp, "tel:")){
  92                         msg->p_assertet_identity_tel_uri = tmp;
  93                 } else {
  94                         g_free(tmp);
  95                 }
  96         }
  97
  98         msg->expires = sipmsg_find_header(msg->msg, "Expires");
  99 }
 100
 101 void
 102 sipmsg_breakdown_free(struct sipmsg_breakdown * msg)
 103 {
 104         if (msg->protocol != empty_string)
 105                 g_free(msg->protocol);
 106         if (msg->rand != empty_string)
 107                 g_free(msg->rand);
 108         if (msg->num != empty_string)
 109                 g_free(msg->num);
 110         if (msg->realm != empty_string)
 111                 g_free(msg->realm);
 112         if (msg->target_name != empty_string)
 113                 g_free(msg->target_name);
 114
 115         // straight from header
 116         //g_free(msg->call_id);
 117
 118         if (msg->cseq != empty_string)
 119                 g_free(msg->cseq);
 120         if (msg->from_url != empty_string)
 121                 g_free(msg->from_url);
 122         if (msg->from_tag != empty_string)
 123                 g_free(msg->from_tag);
 124         if (msg->to_url != empty_string)
 125                 g_free(msg->to_url);
 126         if (msg->to_tag != empty_string)
 127                 g_free(msg->to_tag);
 128
 129         if (msg->p_assertet_identity_sip_uri != empty_string)
 130                 g_free(msg->p_assertet_identity_sip_uri);
 131         if (msg->p_assertet_identity_tel_uri != empty_string)
 132                 g_free(msg->p_assertet_identity_tel_uri);
 133
 134         // straight from header
 135         //g_free (msg->expires);
 136 }
 137
 138 gchar *
 139 sipmsg_breakdown_get_string(int version,
 140                             struct sipmsg_breakdown * msgbd)
 141 {
 142         gchar *response_str;
 143         gchar *msg;
 144         if (msgbd->realm == empty_string || msgbd->realm == NULL) {
 145                 SIPE_DEBUG_INFO_NOFORMAT("realm NULL, so returning NULL signature string");
 146                 return NULL;
 147         }
 148
 149         response_str = msgbd->msg->response != 0 ? g_strdup_printf("<%d>", msgbd->msg->response) : empty_string;
 150         if (version < 3) {
 151                 msg = g_strdup_printf(
 152                         "<%s><%s><%s><%s><%s><%s><%s><%s><%s><%s><%s>" // 1 - 11
 153                         "<%s>%s", // 12 - 13
 154                         msgbd->protocol, msgbd->rand, msgbd->num, msgbd->realm, msgbd->target_name, msgbd->call_id, msgbd->cseq,
 155                         msgbd->msg->method, msgbd->from_url, msgbd->from_tag, msgbd->to_tag,
 156                         msgbd->expires ? msgbd->expires : empty_string, response_str
 157                 );
 158         } else {
 159                 msg = g_strdup_printf(
 160                         "<%s><%s><%s><%s><%s><%s><%s><%s><%s><%s><%s><%s><%s><%s>" // 1 - 14
 161                         "<%s>%s", // 15 - 16
 162                         msgbd->protocol, msgbd->rand, msgbd->num, msgbd->realm, msgbd->target_name, msgbd->call_id, msgbd->cseq,
 163                         msgbd->msg->method, msgbd->from_url, msgbd->from_tag, msgbd->to_url, msgbd->to_tag,
 164                         msgbd->p_assertet_identity_sip_uri, msgbd->p_assertet_identity_tel_uri,
 165                         msgbd->expires ? msgbd->expires : empty_string, response_str
 166                 );
 167         }
 168
 169         if (response_str != empty_string) {
 170                 g_free(response_str);
 171         }
 172
 173         return msg;
 174 }
 175
 176 /*
 177   Local Variables:
 178   mode: c
 179   c-file-style: "bsd"
 180   indent-tabs-mode: t
 181   tab-width: 8
 182   End:
 183 */