/* Standalone program to test functionality of tvbuffs.
 *
 * tvbtest : tvbtest.o tvbuff.o except.o
 *
 * $Id: tvbtest.c 36440 2011-04-04 05:48:06Z etxrab $
 *
 * Copyright (c) 2000 by Gilbert Ramirez <gram@alumni.rice.edu>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "tvbuff.h"
#include "pint.h"

gboolean failed = FALSE;

/* Tests a tvbuff against the expected pattern/length.
 * Returns TRUE if all tests succeeed, FALSE if any test fails */
gboolean
test(tvbuff_t *tvb, gchar* name,
		guint8* expected_data, guint expected_length)
{
	guint			length;
	const guint8	       *cptr;
	guint8			*ptr;
	volatile gboolean	ex_thrown;
	volatile guint32	val32;
	guint32			expected32;
	guint			incr, i;

	length = tvb_length(tvb);

	if (length != expected_length) {
		printf("01: Failed TVB=%s Length of tvb=%u while expected length=%u\n",
				name, length, expected_length);
		failed = TRUE;
		return FALSE;
	}

	/* Test boundary case. A BoundsError exception should be thrown. */
	ex_thrown = FALSE;
	TRY {
		cptr = tvb_get_ptr(tvb, 0, length + 1);
	}
	CATCH(BoundsError) {
		ex_thrown = TRUE;
	}
	CATCH(ReportedBoundsError) {
		printf("02: Caught wrong exception: ReportedBoundsError\n");
	}
	ENDTRY;

	if (!ex_thrown) {
		printf("02: Failed TVB=%s No BoundsError when retrieving %u bytes\n",
				name, length + 1);
		failed = TRUE;
		return FALSE;
	}

	/* Test boundary case with one more byte. A ReportedBoundsError
	   exception should be thrown. */
	ex_thrown = FALSE;
	TRY {
		cptr = tvb_get_ptr(tvb, 0, length + 2);
	}
	CATCH(BoundsError) {
		printf("03: Caught wrong exception: BoundsError\n");
	}
	CATCH(ReportedBoundsError) {
		ex_thrown = TRUE;
	}
	ENDTRY;

	if (!ex_thrown) {
		printf("03: Failed TVB=%s No ReportedBoundsError when retrieving %u bytes\n",
				name, length + 2);
		failed = TRUE;
		return FALSE;
	}

	/* Test boundary case. A BoundsError exception should be thrown. */
	ex_thrown = FALSE;
	TRY {
		cptr = tvb_get_ptr(tvb, -1, 2);
	}
	CATCH(BoundsError) {
		ex_thrown = TRUE;
	}
	CATCH(ReportedBoundsError) {
		printf("04: Caught wrong exception: ReportedBoundsError\n");
	}
	ENDTRY;

	if (!ex_thrown) {
		printf("04: Failed TVB=%s No BoundsError when retrieving 2 bytes from"
				" offset -1\n", name);
		failed = TRUE;
		return FALSE;
	}

	/* Test boundary case. A BoundsError exception should not be thrown. */
	ex_thrown = FALSE;
	TRY {
		cptr = tvb_get_ptr(tvb, 0, 1);
	}
	CATCH(BoundsError) {
		ex_thrown = TRUE;
	}
	CATCH(ReportedBoundsError) {
		printf("05: Caught wrong exception: ReportedBoundsError\n");
	}
	ENDTRY;

	if (ex_thrown) {
		printf("05: Failed TVB=%s BoundsError when retrieving 1 bytes from"
				" offset 0\n", name);
		failed = TRUE;
		return FALSE;
	}

	/* Test boundary case. A BoundsError exception should not be thrown. */
	ex_thrown = FALSE;
	TRY {
		cptr = tvb_get_ptr(tvb, -1, 1);
	}
	CATCH(BoundsError) {
		ex_thrown = TRUE;
	}
	CATCH(ReportedBoundsError) {
		printf("06: Caught wrong exception: ReportedBoundsError\n");
	}
	ENDTRY;

	if (ex_thrown) {
		printf("06: Failed TVB=%s BoundsError when retrieving 1 bytes from"
				" offset -1\n", name);
		failed = TRUE;
		return FALSE;
	}


	/* Check data at boundary. An exception should not be thrown. */
	if (length >= 4) {
		ex_thrown = FALSE;
		TRY {
			val32 = tvb_get_ntohl(tvb, 0);
		}
		CATCH_ALL {
			ex_thrown = TRUE;
		}
		ENDTRY;

		if (ex_thrown) {
			printf("07: Failed TVB=%s Exception when retrieving "
					"guint32 from offset 0\n", name);
			failed = TRUE;
			return FALSE;
		}

		expected32 = pntohl(expected_data);
		if (val32 != expected32) {
			printf("08: Failed TVB=%s  guint32 @ 0 %u != expected %u\n",
					name, val32, expected32);
			failed = TRUE;
			return FALSE;
		}
	}

	/* Check data at boundary. An exception should not be thrown. */
	if (length >= 4) {
		ex_thrown = FALSE;
		TRY {
			val32 = tvb_get_ntohl(tvb, -4);
		}
		CATCH_ALL {
			ex_thrown = TRUE;
		}
		ENDTRY;

		if (ex_thrown) {
			printf("09: Failed TVB=%s Exception when retrieving "
					"guint32 from offset 0\n", name);
			failed = TRUE;
			return FALSE;
		}

		expected32 = pntohl(&expected_data[length-4]);
		if (val32 != expected32) {
			printf("10: Failed TVB=%s guint32 @ -4 %u != expected %u\n",
					name, val32, expected32);
			failed = TRUE;
			return FALSE;
		}
	}

	/* Sweep across data in various sized increments checking
	 * tvb_memdup() */
	for (incr = 1; incr < length; incr++) {
		for (i = 0; i < length - incr; i += incr) {
			ptr = tvb_memdup(tvb, i, incr);
			if (memcmp(ptr, &expected_data[i], incr) != 0) {
				printf("11: Failed TVB=%s Offset=%d Length=%d "
						"Bad memdup\n",
						name, i, incr);
				failed = TRUE;
				g_free(ptr);
				return FALSE;
			}
			g_free(ptr);
		}
	}

	/* One big memdup */
	ptr = tvb_memdup(tvb, 0, -1);
	if (memcmp(ptr, expected_data, length) != 0) {
		printf("12: Failed TVB=%s Offset=0 Length=-1 "
				"Bad memdup\n", name);
		failed = TRUE;
		g_free(ptr);
		return FALSE;
	}
	g_free(ptr);


	printf("Passed TVB=%s\n", name);

	return TRUE;
}

gboolean
skip(tvbuff_t *tvb _U_, gchar* name,
		guint8* expected_data _U_, guint expected_length _U_)
{
	printf("Skipping TVB=%s\n", name);
	return FALSE;
}


void
run_tests(void)
{
	int		i, j;

	tvbuff_t	*tvb_small[3];
	tvbuff_t	*tvb_large[3];
	tvbuff_t	*tvb_subset[6];
	guint8		*small[3];
	guint8		*large[3];
	guint8		*subset[6];
	guint		subset_length[6];
	guint8		temp;
	guint8		*comp[6];
	tvbuff_t	*tvb_comp[6];
	guint		comp_length[6];
	int		len;
	
	for (i = 0; i < 3; i++) {
		small[i] = g_new(guint8, 16);

		temp = 16 * i;
		for (j = 0; j < 16; j++) {
			small[i][j] = temp + j;
		}

		tvb_small[i] = tvb_new_real_data(small[i], 16, 17);
	}

	for (i = 0; i < 3; i++) {
		large[i] = g_new(guint8, 19);

		temp = 19 * i;
		for (j = 0; j < 19; j++) {
			large[i][j] = temp + j;
		}

		tvb_large[i] = tvb_new_real_data(large[i], 19, 20);
	}

	/* Test the TVBUFF_REAL_DATA objects. */
	test(tvb_small[0], "Small 0", small[0], 16);
	test(tvb_small[1], "Small 1", small[1], 16);
	test(tvb_small[2], "Small 2", small[2], 16);

	test(tvb_large[0], "Large 0", large[0], 19);
	test(tvb_large[1], "Large 1", large[1], 19);
	test(tvb_large[2], "Large 2", large[2], 19);

	tvb_subset[0]		= tvb_new_subset(tvb_small[0], 0, 8, 9);
	subset[0]		= &small[0][0];
	subset_length[0]	= 8;

	tvb_subset[1]		= tvb_new_subset(tvb_large[0], -10, 10, 11);
	subset[1]		= &large[0][9];
	subset_length[1]	= 10;

	tvb_subset[2]		= tvb_new_subset(tvb_small[1], -16, -1, 17);
	subset[2]		= &small[1][0];
	subset_length[2]	= 16;

	tvb_subset[3]		= tvb_new_subset(tvb_subset[0], 0, 3, 4);
	subset[3]		= &small[0][0];
	subset_length[3]	= 3;

	tvb_subset[4]		= tvb_new_subset(tvb_subset[1], -5, 5, 6);
	subset[4]		= &large[0][14];
	subset_length[4]	= 5;

	tvb_subset[5]		= tvb_new_subset(tvb_subset[2], 4, 8, 9);
	subset[5]		= &small[1][4];
	subset_length[5]	= 8;

	/* Test the TVBUFF_SUBSET objects. */
	test(tvb_subset[0], "Subset 0", subset[0], subset_length[0]);
	test(tvb_subset[1], "Subset 1", subset[1], subset_length[1]);
	test(tvb_subset[2], "Subset 2", subset[2], subset_length[2]);
	test(tvb_subset[3], "Subset 3", subset[3], subset_length[3]);
	test(tvb_subset[4], "Subset 4", subset[4], subset_length[4]);
	test(tvb_subset[5], "Subset 5", subset[5], subset_length[5]);

	/* Composite tvbuffs don't work at the moment -- tests commented out until
	 * they do. */
	
	/* One Real */
	printf("Making Composite 0\n");
	tvb_comp[0]		= tvb_new_composite();
	comp[0]			= small[0];
	comp_length[0]		= 16;
	tvb_composite_append(tvb_comp[0], tvb_small[0]);
	tvb_composite_finalize(tvb_comp[0]);

	/* Two Reals */
	printf("Making Composite 1\n");
	tvb_comp[1]		= tvb_new_composite();
	comp[1]			= g_malloc(32);
	comp_length[1]		= 32;
	memcpy(comp[1], small[0], 16);
	memcpy(&comp[1][16], small[1], 16);
	tvb_composite_append(tvb_comp[1], tvb_small[0]);
	tvb_composite_append(tvb_comp[1], tvb_small[1]);
	tvb_composite_finalize(tvb_comp[1]);

	/* One subset */
	printf("Making Composite 2\n");
	tvb_comp[2]		= tvb_new_composite();
	comp[2]			= subset[1];
	comp_length[2]		= subset_length[1];
	tvb_composite_append(tvb_comp[2], tvb_subset[1]);
	tvb_composite_finalize(tvb_comp[2]);

	/* Two subsets */
	printf("Making Composite 3\n");
	tvb_comp[3]		= tvb_new_composite();
	comp[3]			= g_malloc(13);
	comp_length[3]		= 13;
	memcpy(comp[3], &large[0][14], 5);
	memcpy(&comp[3][5], &small[1][4], 8);
	tvb_composite_append(tvb_comp[3], tvb_subset[4]);
	tvb_composite_append(tvb_comp[3], tvb_subset[5]);
	tvb_composite_finalize(tvb_comp[3]);

	/* One real, one subset */
	printf("Making Composite 4\n");
	tvb_comp[4]		= tvb_new_composite();
	comp[4]			= g_malloc(16 + subset_length[1]);
	comp_length[4]		= 16 + subset_length[1];
	memcpy(comp[4], small[0], 16);
	memcpy(&comp[4][16], subset[1], subset_length[1]);
	tvb_composite_append(tvb_comp[4], tvb_small[0]);
	tvb_composite_append(tvb_comp[4], tvb_subset[1]);
	tvb_composite_finalize(tvb_comp[4]);

	/* 4 composites */
	printf("Making Composite 5\n");
	tvb_comp[5]		= tvb_new_composite();
	comp_length[5]		= comp_length[0] +
					comp_length[1] +
					comp_length[2] +
					comp_length[3];
	comp[5]			= g_malloc(comp_length[5]);

	len = 0;
	memcpy(&comp[5][len], comp[0], comp_length[0]);
	len += comp_length[0];
	memcpy(&comp[5][len], comp[1], comp_length[1]);
	len += comp_length[1];
	memcpy(&comp[5][len], comp[2], comp_length[2]);
	len += comp_length[2];
	memcpy(&comp[5][len], comp[3], comp_length[3]);

	tvb_composite_append(tvb_comp[5], tvb_comp[0]);
	tvb_composite_append(tvb_comp[5], tvb_comp[1]);
	tvb_composite_append(tvb_comp[5], tvb_comp[2]);
	tvb_composite_append(tvb_comp[5], tvb_comp[3]);
	tvb_composite_finalize(tvb_comp[5]);

	/* Test the TVBUFF_COMPOSITE objects. */
	test(tvb_comp[0], "Composite 0", comp[0], comp_length[0]);
	skip(tvb_comp[1], "Composite 1", comp[1], comp_length[1]);
	test(tvb_comp[2], "Composite 2", comp[2], comp_length[2]);
	skip(tvb_comp[3], "Composite 3", comp[3], comp_length[3]);
	skip(tvb_comp[4], "Composite 4", comp[4], comp_length[4]);
	skip(tvb_comp[5], "Composite 5", comp[5], comp_length[5]);
}

int
main(void)
{
	except_init();
	tvbuff_init();
	run_tests();
	tvbuff_cleanup();
	except_deinit();
	exit(failed?1:0);
}
