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freeswitch/libs/spandsp/tests/t38_core_tests.c

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/*
* SpanDSP - a series of DSP components for telephony
*
* t38_core_tests.c - Tests for the T.38 FoIP core module.
*
* Written by Steve Underwood <steveu@coppice.org>
*
* Copyright (C) 2007 Steve Underwood
*
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2, as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id: t38_core_tests.c,v 1.16 2009/07/14 13:54:22 steveu Exp $
*/
/*! \file */
/*! \page t38_core_tests_page T.38 core tests
\section t38_core_tests_page_sec_1 What does it do?
These tests exercise the T.38 core ASN.1 processing code.
*/
#if defined(HAVE_CONFIG_H)
#include <config.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <string.h>
#include <assert.h>
#include <errno.h>
//#if defined(WITH_SPANDSP_INTERNALS)
#define SPANDSP_EXPOSE_INTERNAL_STRUCTURES
//#endif
#include "spandsp.h"
#define MAX_FIELDS 42
#define MAX_FIELD_LEN 8192
int t38_version;
int succeeded = TRUE;
int ok_indicator_packets;
int bad_indicator_packets;
int ok_data_packets;
int bad_data_packets;
int missing_packets;
int current_indicator;
int current_data_type;
int current_field_type;
int skip;
uint8_t field_body[MAX_FIELDS][MAX_FIELD_LEN];
int field_len[MAX_FIELDS];
static int rx_missing_handler(t38_core_state_t *s, void *user_data, int rx_seq_no, int expected_seq_no)
{
missing_packets++;
//printf("Hit missing\n");
return 0;
}
/*- End of function --------------------------------------------------------*/
static int rx_indicator_handler(t38_core_state_t *s, void *user_data, int indicator)
{
if (indicator == current_indicator)
ok_indicator_packets++;
else
bad_indicator_packets++;
//printf("Hit indicator %d\n", indicator);
return 0;
}
/*- End of function --------------------------------------------------------*/
static int rx_data_handler(t38_core_state_t *s, void *user_data, int data_type, int field_type, const uint8_t *buf, int len)
{
if (--skip >= 0)
{
if (data_type == current_data_type && field_type == current_field_type)
ok_data_packets++;
else
bad_data_packets++;
}
else
{
if (data_type == current_data_type && field_type == T38_FIELD_T4_NON_ECM_SIG_END)
ok_data_packets++;
else
bad_data_packets++;
}
//printf("Hit data %d, field %d\n", data_type, field_type);
return 0;
}
/*- End of function --------------------------------------------------------*/
static int tx_packet_handler(t38_core_state_t *s, void *user_data, const uint8_t *buf, int len, int count)
{
t38_core_state_t *t;
static int seq_no = 0;
t = (t38_core_state_t *) user_data;
span_log(&s->logging, SPAN_LOG_FLOW, "Send seq %d, len %d, count %d\n", s->tx_seq_no, len, count);
if (t38_core_rx_ifp_packet(t, buf, len, seq_no) < 0)
succeeded = FALSE;
seq_no++;
return 0;
}
/*- End of function --------------------------------------------------------*/
static int encode_decode_tests(t38_core_state_t *a, t38_core_state_t *b)
{
t38_data_field_t field[MAX_FIELDS];
int i;
int j;
ok_indicator_packets = 0;
bad_indicator_packets = 0;
ok_data_packets = 0;
bad_data_packets = 0;
missing_packets = 0;
/* Try all the indicator types */
for (i = 0; i < 100; i++)
{
current_indicator = i;
if (t38_core_send_indicator(a, i) < 0)
break;
}
/* Try all the data types, as single field messages with no data */
for (i = 0; i < 100; i++)
{
for (j = 0; j < 100; j++)
{
current_data_type = i;
current_field_type = j;
skip = 99;
if (t38_core_send_data(a, i, j, (uint8_t *) "", 0, T38_PACKET_CATEGORY_CONTROL_DATA) < 0)
break;
}
if (j == 0)
break;
}
/* Try all the data types and field types, as single field messages with data */
for (i = 0; i < 100; i++)
{
for (j = 0; j < 100; j++)
{
current_data_type = i;
current_field_type = j;
skip = 99;
if (t38_core_send_data(a, i, j, (uint8_t *) "ABCD", 4, T38_PACKET_CATEGORY_CONTROL_DATA) < 0)
break;
}
if (j == 0)
break;
}
/* Try all the data types and field types, as multi-field messages */
for (i = 0; i < 100; i++)
{
for (j = 0; j < 100; j++)
{
current_data_type = i;
current_field_type = j;
skip = 1;
field_len[0] = 444;
field_len[1] = 333;
field[0].field_type = j;
field[0].field = field_body[0];
field[0].field_len = field_len[0];
field[1].field_type = T38_FIELD_T4_NON_ECM_SIG_END;
field[1].field = field_body[1];
field[1].field_len = field_len[1];
if (t38_core_send_data_multi_field(a, i, field, 2, T38_PACKET_CATEGORY_CONTROL_DATA) < 0)
break;
}
if (j == 0)
break;
}
printf("Indicator packets: OK = %d, bad = %d\n", ok_indicator_packets, bad_indicator_packets);
printf("Data packets: OK = %d, bad = %d\n", ok_data_packets, bad_data_packets);
printf("Missing packets = %d\n", missing_packets);
if (t38_version == 0)
{
if (ok_indicator_packets != 16 || bad_indicator_packets != 0)
{
printf("Tests failed\n");
return -1;
}
if (ok_data_packets != 288 || bad_data_packets != 0)
{
printf("Tests failed\n");
return -1;
}
}
else
{
if (ok_indicator_packets != 23 || bad_indicator_packets != 0)
{
printf("Tests failed\n");
return -1;
}
if (ok_data_packets != 720 || bad_data_packets != 0)
{
printf("Tests failed\n");
return -1;
}
}
if (missing_packets > 0)
{
printf("Tests failed\n");
return -1;
}
return 0;
}
/*- End of function --------------------------------------------------------*/
static int attack_tests(t38_core_state_t *s)
{
return 0;
}
/*- End of function --------------------------------------------------------*/
int main(int argc, char *argv[])
{
t38_core_state_t t38_core_a;
t38_core_state_t t38_core_b;
for (t38_version = 0; t38_version < 2; t38_version++)
{
printf("Using T.38 version %d\n", t38_version);
if (t38_core_init(&t38_core_a,
rx_indicator_handler,
rx_data_handler,
rx_missing_handler,
&t38_core_b,
tx_packet_handler,
&t38_core_b) == NULL)
{
fprintf(stderr, "Cannot start the T.38 core\n");
exit(2);
}
if (t38_core_init(&t38_core_b,
rx_indicator_handler,
rx_data_handler,
rx_missing_handler,
&t38_core_a,
tx_packet_handler,
&t38_core_a) == NULL)
{
fprintf(stderr, "Cannot start the T.38 core\n");
exit(2);
}
t38_set_t38_version(&t38_core_a, t38_version);
t38_set_t38_version(&t38_core_b, t38_version);
span_log_set_level(&t38_core_a.logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG);
span_log_set_tag(&t38_core_a.logging, "T.38-A");
span_log_set_level(&t38_core_b.logging, SPAN_LOG_DEBUG | SPAN_LOG_SHOW_TAG);
span_log_set_tag(&t38_core_b.logging, "T.38-B");
if (encode_decode_tests(&t38_core_a, &t38_core_b))
{
printf("Encode/decode tests failed\n");
exit(2);
}
if (attack_tests(&t38_core_a))
{
printf("Attack tests failed\n");
exit(2);
}
}
if (!succeeded)
{
printf("Tests failed\n");
exit(2);
}
printf("Tests passed\n");
return 0;
}
/*- End of function --------------------------------------------------------*/
/*- End of file ------------------------------------------------------------*/
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