forked from osmocom/wireshark
104 lines
2.9 KiB
C
104 lines
2.9 KiB
C
/* export_sslkeys.c
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*
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* Export SSL Session Keys dialog
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* by Sake Blok <sake@euronet.nl> (20110526)
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "config.h"
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#include <glib.h>
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#include <epan/address.h>
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#include <epan/dissectors/packet-tls.h>
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#include <epan/dissectors/packet-tls-utils.h>
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#include "ui/ssl_key_export.h"
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int
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ssl_session_key_count(void)
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{
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return g_hash_table_size(ssl_session_hash) +
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g_hash_table_size(ssl_crandom_hash);
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}
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static void
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ssl_export_sessions_func(gpointer key, gpointer value, gpointer user_data)
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{
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guint i;
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StringInfo *sslid = (StringInfo *)key;
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StringInfo *master_secret = (StringInfo *)value;
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GString *keylist = (GString *)user_data;
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g_string_append(keylist, "RSA Session-ID:");
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for (i = 0; i < sslid->data_len; i++) {
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g_string_append_printf(keylist, "%.2x", sslid->data[i]);
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}
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g_string_append(keylist, " Master-Key:");
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for (i = 0; i < master_secret->data_len; i++) {
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g_string_append_printf(keylist, "%.2x", master_secret->data[i]);
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}
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g_string_append_c(keylist, '\n');
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}
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static void
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ssl_export_client_randoms_func(gpointer key, gpointer value, gpointer user_data)
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{
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guint i;
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StringInfo *client_random = (StringInfo *)key;
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StringInfo *master_secret = (StringInfo *)value;
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GString *keylist = (GString *)user_data;
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g_string_append(keylist, "CLIENT_RANDOM ");
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for (i = 0; i < client_random->data_len; i++) {
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g_string_append_printf(keylist, "%.2x", client_random->data[i]);
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}
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g_string_append_c(keylist, ' ');
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for (i = 0; i < master_secret->data_len; i++) {
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g_string_append_printf(keylist, "%.2x", master_secret->data[i]);
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}
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g_string_append_c(keylist, '\n');
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}
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gchar*
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ssl_export_sessions(gsize *length)
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{
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/* Output format is:
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* "RSA Session-ID:xxxx Master-Key:yyyy\n"
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* Where xxxx is the session ID in hex (max 64 chars)
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* Where yyyy is the Master Key in hex (always 96 chars)
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* So in total max 3+1+11+64+1+11+96+2 = 189 chars
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* or
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* "CLIENT_RANDOM zzzz yyyy\n"
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* Where zzzz is the client random (always 64 chars)
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* Where yyyy is same as above
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* So length will always be 13+1+64+1+96+2 = 177 chars
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*
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* Wireshark can read CLIENT_RANDOM since v1.8.0.
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* Both values are exported in case you use the Session-ID for resuming a
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* session in a different capture.
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*/
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gsize len = 189 * g_hash_table_size(ssl_session_hash) +
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177 * g_hash_table_size(ssl_crandom_hash);
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GString *keylist = g_string_sized_new(len);
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g_hash_table_foreach(ssl_session_hash, ssl_export_sessions_func, (gpointer)keylist);
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g_hash_table_foreach(ssl_crandom_hash, ssl_export_client_randoms_func, (gpointer)keylist);
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*length = keylist->len;
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return g_string_free(keylist, FALSE);
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}
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