ui/ssl_key_export.c

   1 /* export_sslkeys.c
   2  *
   3  * $Id$
   4  *
   5  * Export SSL Session Keys dialog
   6  * by Sake Blok <sake@euronet.nl> (20110526)
   7  *
   8  * Wireshark - Network traffic analyzer
   9  * By Gerald Combs <gerald@wireshark.org>
  10  * Copyright 1998 Gerald Combs
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  25  */
  26
  27 #include "config.h"
  28
  29 #include <glib.h>
  30
  31 #include <epan/address.h>
  32 #include <epan/dissectors/packet-ssl.h>
  33 #include <epan/dissectors/packet-ssl-utils.h>
  34
  35 #include "ui/ssl_key_export.h"
  36
  37 int
  38 ssl_session_key_count(void)
  39 {
  40     return g_hash_table_size(ssl_session_hash);
  41 }
  42
  43 static void
  44 ssl_export_sessions_func(gpointer key, gpointer value, gpointer user_data)
  45 {
  46     guint i;
  47     StringInfo* sslid = (StringInfo*)key;
  48     StringInfo* mastersecret = (StringInfo*)value;
  49     GString* keylist = (GString*)user_data;
  50
  51     /*
  52      * XXX - should this be a string that grows as necessary to hold
  53      * everything in it?
  54      */
  55     g_string_append(keylist, "RSA Session-ID:");
  56
  57     for( i=0; i<sslid->data_len; i++) {
  58         g_string_append_printf(keylist, "%.2x", sslid->data[i]&255);
  59     }
  60
  61     g_string_append(keylist, " Master-Key:");
  62
  63     for( i=0; i<mastersecret->data_len; i++) {
  64         g_string_append_printf(keylist, "%.2x", mastersecret->data[i]&255);
  65     }
  66
  67     g_string_append_c(keylist, '\n');
  68 }
  69
  70 gchar*
  71 ssl_export_sessions(void)
  72 {
  73     GString* keylist = g_string_new("");
  74     gchar *session_keys;
  75
  76     /* Output format is:
  77      * "RSA Session-ID:xxxx Master-Key:yyyy\n"
  78      * Where xxxx is the session ID in hex (max 64 chars)
  79      * Where yyyy is the Master Key in hex (always 96 chars)
  80      * So in total max 3+1+11+64+1+11+96+2 = 189 chars
  81      */
  82
  83     g_hash_table_foreach(ssl_session_hash, ssl_export_sessions_func, (gpointer)keylist);
  84
  85     session_keys = keylist->str;
  86     g_string_free(keylist, FALSE);
  87     return session_keys;
  88 }
  89
  90 /*
  91  * Editor modelines
  92  *
  93  * Local Variables:
  94  * c-basic-offset: 4
  95  * tab-width: 8
  96  * indent-tabs-mode: nil
  97  * End:
  98  *
  99  * ex: set shiftwidth=4 tabstop=8 expandtab:
 100  * :indentSize=4:tabSize=8:noTabs=true:
 101  */