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/*
* tap-credentials.c
* Copyright 2019 Dario Lombardo <lomato@gmail.com>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <glib.h>
#include <epan/packet_info.h>
#include <epan/tap.h>
#include <epan/stat_tap_ui.h>
#include <ui/cmdarg_err.h>
#include <ui/tap-credentials.h>
void register_tap_listener_credentials(void);
wmem_array_t* credentials = NULL;
static tap_credential_t* tap_credential_clone(tap_credential_t* auth)
{
tap_credential_t* clone = wmem_new0(NULL, tap_credential_t);
clone->num = auth->num;
clone->username_num = auth->username_num;
clone->password_hf_id = auth->password_hf_id;
if (auth->username)
clone->username = wmem_strdup(NULL, auth->username);
clone->proto = auth->proto;
if (auth->info)
clone->info = wmem_strdup(NULL, auth->info);
return clone;
}
static tap_packet_status credentials_packet(void *p _U_, packet_info *pinfo _U_, epan_dissect_t *edt _U_, const void *pri)
{
tap_credential_t* clone = tap_credential_clone((tap_credential_t*)pri);
wmem_array_append(credentials, (void*)clone, 1);
return TAP_PACKET_REDRAW;
}
static void credentials_reset(void* p)
{
if (!p)
return;
tap_credential_t* auth = (tap_credential_t*)p;
wmem_free(NULL, auth->username);
wmem_free(NULL, auth->info);
wmem_free(NULL, auth);
}
static void credentials_draw(void *p _U_)
{
printf("===================================================================\n");
printf("%-10s %-16s %-16s %-16s\n", "Packet", "Protocol", "Username", "Info");
printf("------ -------- -------- --------\n");
for (guint i = 0; i < wmem_array_get_count(credentials); i++) {
tap_credential_t* auth = (tap_credential_t*)wmem_array_index(credentials, i);
printf("%-10u %-16s %-16s %-16s\n", auth->num, auth->proto, auth->username, auth->info ? auth->info : "");
}
printf("===================================================================\n");
}
static void credentials_init(const char *opt_arg _U_, void *userdata _U_)
{
GString* error_string;
error_string = register_tap_listener("credentials", NULL, NULL, TL_REQUIRES_NOTHING,
credentials_reset, credentials_packet, credentials_draw, NULL);
if (error_string) {
/* error, we failed to attach to the tap. clean up */
cmdarg_err("Couldn't register credentials tap: %s", error_string->str);
g_string_free(error_string, TRUE);
exit(1);
}
credentials = wmem_array_new(wmem_file_scope(), sizeof(tap_credential_t));
}
static stat_tap_ui credentials_ui = {
REGISTER_TOOLS_GROUP_UNSORTED,
"Username and passwords",
"credentials",
credentials_init,
0,
NULL
};
void
register_tap_listener_credentials(void)
{
register_stat_tap_ui(&credentials_ui, NULL);
}
/*
* Editor modelines - http://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 8
* tab-width: 8
* indent-tabs-mode: t
* End:
*
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
* :indentSize=8:tabSize=8:noTabs=false:
*/
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