src/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 <glib.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <errno.h>
  27 #include <ctype.h>
  28 #ifndef _WIN32
  29 #include <et/com_err.h>
  30 #else
  31 #include <protocols/zephyr/com_err.h>
  32 #include "internal.h"
  33 #endif
  34 #include "debug.h"
  35 #include "util.h"
  36
  37 #include "sipe-sign.h"
  38
  39 void sipmsg_breakdown_parse(struct sipmsg_breakdown * msg, gchar * realm, gchar * target)
  40 {
  41         if (msg == NULL || msg->msg == NULL) {
  42                 purple_debug(PURPLE_DEBUG_MISC, "sipmsg_breakdown_parse msg or msg->msg is NULL", "\n");
  43                 return;
  44         }
  45
  46         gchar * hdr;
  47
  48         msg->rand = msg->num = msg->realm = msg->target_name = msg->call_id =
  49                 msg->cseq = msg->from_url = msg->from_tag = msg->to_tag = msg->expires = empty_string;
  50
  51         if ((hdr = sipmsg_find_header(msg->msg, "Proxy-Authorization")) ||
  52             (hdr = sipmsg_find_header(msg->msg, "Proxy-Authenticate")) ||
  53             (hdr = sipmsg_find_header(msg->msg, "Proxy-Authentication-Info")) ||
  54             (hdr = sipmsg_find_header(msg->msg, "Authentication-Info")) ) {
  55                 msg->rand   = sipmsg_find_part_of_header(hdr, "rand=\"", "\"", empty_string);
  56                 msg->num    = sipmsg_find_part_of_header(hdr, "num=\"", "\"", empty_string);
  57                 msg->realm  = sipmsg_find_part_of_header(hdr, "realm=\"", "\"", empty_string);
  58                 msg->target_name = sipmsg_find_part_of_header(hdr, "targetname=\"", "\"", empty_string);
  59         } else {
  60                 msg->realm = realm;
  61                 msg->target_name = target;
  62         }
  63
  64         msg->call_id = sipmsg_find_header(msg->msg, "Call-ID");
  65
  66         if (hdr = sipmsg_find_header(msg->msg, "CSeq")) {
  67                 msg->cseq = sipmsg_find_part_of_header(hdr, NULL, " ", empty_string);
  68         }
  69
  70         if (hdr = sipmsg_find_header(msg->msg, "From")) {
  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         if (hdr = sipmsg_find_header(msg->msg, "To")) {
  76                 msg->to_tag = sipmsg_find_part_of_header(hdr, ";tag=", ";", empty_string);
  77         }
  78
  79         msg->expires = sipmsg_find_header(msg->msg, "Expires");
  80 }
  81
  82 void
  83 sipmsg_breakdown_free(struct sipmsg_breakdown * msg)
  84 {
  85         if (msg->rand != empty_string)
  86                 g_free(msg->rand);
  87         if (msg->num != empty_string)
  88                 g_free(msg->num);
  89         //if (msg->realm != empty_string)
  90                 //g_free(msg->realm);
  91         //if (msg->target_name != empty_string)
  92                 //g_free(msg->target_name);
  93
  94         // straight from header
  95         //g_free(msg->call_id);
  96
  97         if (msg->cseq != empty_string)
  98                 g_free(msg->cseq);
  99         if (msg->from_url != empty_string)
 100                 g_free(msg->from_url);
 101         if (msg->from_tag != empty_string)
 102                 g_free(msg->from_tag);
 103         if (msg->to_tag != empty_string)
 104                 g_free(msg->to_tag);
 105
 106         // straight from header
 107         //g_free (msg->expires);
 108 }
 109
 110 gchar *
 111 sipmsg_breakdown_get_string(struct sipmsg_breakdown * msgbd)
 112 {
 113         if (msgbd->realm == empty_string || msgbd->realm == NULL) {
 114                 purple_debug(PURPLE_DEBUG_MISC, "sipe", "realm NULL, so returning NULL signature string\n");
 115                 return NULL;
 116         }
 117
 118         gchar * response_str = msgbd->msg->response != 0 ? g_strdup_printf("<%d>", msgbd->msg->response) : empty_string;
 119         gchar * msg = g_strdup_printf(
 120                 "<%s><%s><%s><%s><%s><%s><%s><%s><%s><%s><%s>" // 1 - 11
 121                 "<%s>%s", // 12 - 13
 122                 "NTLM", msgbd->rand, msgbd->num, msgbd->realm, msgbd->target_name, msgbd->call_id, msgbd->cseq,
 123                 msgbd->msg->method, msgbd->from_url, msgbd->from_tag, msgbd->to_tag,
 124                 msgbd->expires ? msgbd->expires : empty_string, response_str
 125         );
 126
 127         if (response_str != empty_string) {
 128                 g_free(response_str);
 129         }
 130
 131         return msg;
 132 }