source: mainline/uspace/srv/net/tcp/test/segment.c@ 3f932a7e

/*
 * Copyright (c) 2017 Jiri Svoboda
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <pcut/pcut.h>

#include "main.h"
#include "../segment.h"

PCUT_INIT;

PCUT_TEST_SUITE(segment);

/** Test create/destroy control segment */
PCUT_TEST(ctrl_seg_mkdel)
{
        tcp_segment_t *seg;

        seg = tcp_segment_make_ctrl(CTL_SYN);
        PCUT_ASSERT_NOT_NULL(seg);
        tcp_segment_delete(seg);
}

/** Test create/destroy data segment */
PCUT_TEST(data_seg_mkdel)
{
        tcp_segment_t *seg;
        uint8_t *data;
        size_t i, dsize;

        dsize = 15;
        data = malloc(dsize);
        PCUT_ASSERT_NOT_NULL(data);

        for (i = 0; i < dsize; i++)
                data[i] = (uint8_t) i;

        seg = tcp_segment_make_data(CTL_SYN, data, dsize);
        PCUT_ASSERT_NOT_NULL(seg);

        tcp_segment_delete(seg);
        free(data);
}

/** Test create/duplicate/destroy control segment */
PCUT_TEST(ctrl_seg_dup)
{
        tcp_segment_t *seg, *dup;

        seg = tcp_segment_make_ctrl(CTL_SYN);
        PCUT_ASSERT_NOT_NULL(seg);

        seg->seq = 20;
        seg->ack = 19;
        seg->wnd = 18;
        seg->up = 17;

        dup = tcp_segment_dup(seg);
        test_seg_same(seg, dup);

        tcp_segment_delete(seg);
        tcp_segment_delete(dup);
}

/** Test create/duplicate/destroy data segment */
PCUT_TEST(data_seg_dup)
{
        tcp_segment_t *seg, *dup;
        uint8_t *data;
        size_t i, dsize;

        dsize = 15;
        data = malloc(dsize);
        PCUT_ASSERT_NOT_NULL(data);

        for (i = 0; i < dsize; i++)
                data[i] = (uint8_t) i;

        seg = tcp_segment_make_data(CTL_SYN, data, dsize);
        PCUT_ASSERT_NOT_NULL(seg);

        seg->seq = 20;
        seg->ack = 19;
        seg->wnd = 18;
        seg->up = 17;

        dup = tcp_segment_dup(seg);
        test_seg_same(seg, dup);

        tcp_segment_delete(seg);
        tcp_segment_delete(dup);
        free(data);
}

/** Test reset segment for segment with ACK not set */
PCUT_TEST(noack_seg_rst)
{
        tcp_segment_t *seg, *rst;

        seg = tcp_segment_make_ctrl(CTL_SYN);
        PCUT_ASSERT_NOT_NULL(seg);

        seg->seq = 20;
        seg->ack = 19;
        seg->wnd = 18;
        seg->up = 17;

        rst = tcp_segment_make_rst(seg);
        PCUT_ASSERT_NOT_NULL(seg);

        tcp_segment_delete(seg);
        tcp_segment_delete(rst);
}

/** Test reset segment for segment with ACK set */
PCUT_TEST(ack_seg_rst)
{
        tcp_segment_t *seg, *rst;

        seg = tcp_segment_make_ctrl(CTL_SYN | CTL_ACK);
        PCUT_ASSERT_NOT_NULL(seg);

        seg->seq = 20;
        seg->ack = 19;
        seg->wnd = 18;
        seg->up = 17;

        rst = tcp_segment_make_rst(seg);
        PCUT_ASSERT_NOT_NULL(seg);

        tcp_segment_delete(seg);
        tcp_segment_delete(rst);
}

/** Test copying out data segment text */
PCUT_TEST(data_seg_text)
{
        tcp_segment_t *seg;
        uint8_t *data;
        uint8_t *cdata;
        size_t i, dsize;

        dsize = 15;
        data = malloc(dsize);
        PCUT_ASSERT_NOT_NULL(data);
        cdata = malloc(dsize);
        PCUT_ASSERT_NOT_NULL(cdata);

        for (i = 0; i < dsize; i++)
                data[i] = (uint8_t) i;

        seg = tcp_segment_make_data(CTL_SYN, data, dsize);
        PCUT_ASSERT_NOT_NULL(seg);

        PCUT_ASSERT_INT_EQUALS(dsize, tcp_segment_text_size(seg));
        tcp_segment_text_copy(seg, cdata, dsize);

        for (i = 0; i < dsize; i++)
                PCUT_ASSERT_INT_EQUALS(data[i], cdata[i]);

        tcp_segment_delete(seg);
        free(data);
        free(cdata);
}

/** Test trimming data segment text */
PCUT_TEST(data_seg_trim)
{
        tcp_segment_t *seg;
        uint8_t *data;
        uint8_t *cdata;
        size_t i, dsize;

        dsize = 15;
        data = malloc(dsize);
        PCUT_ASSERT_NOT_NULL(data);
        cdata = malloc(dsize);
        PCUT_ASSERT_NOT_NULL(cdata);

        for (i = 0; i < dsize; i++)
                data[i] = (uint8_t) i;

        seg = tcp_segment_make_data(CTL_SYN | CTL_FIN, data, dsize);
        PCUT_ASSERT_NOT_NULL(seg);

        PCUT_ASSERT_INT_EQUALS(dsize, tcp_segment_text_size(seg));
        tcp_segment_text_copy(seg, cdata, dsize);

        for (i = 0; i < dsize; i++)
                PCUT_ASSERT_INT_EQUALS(data[i], cdata[i]);

        PCUT_ASSERT_INT_EQUALS(CTL_SYN | CTL_FIN, seg->ctrl);

        tcp_segment_trim(seg, 1, 0);
        PCUT_ASSERT_INT_EQUALS(CTL_FIN, seg->ctrl);
        PCUT_ASSERT_INT_EQUALS(dsize, tcp_segment_text_size(seg));

        tcp_segment_trim(seg, 0, 1);
        PCUT_ASSERT_INT_EQUALS(0, seg->ctrl);
        PCUT_ASSERT_INT_EQUALS(dsize, tcp_segment_text_size(seg));

        tcp_segment_trim(seg, 1, 0);
        PCUT_ASSERT_INT_EQUALS(0, seg->ctrl);
        PCUT_ASSERT_INT_EQUALS(dsize - 1, tcp_segment_text_size(seg));

        tcp_segment_text_copy(seg, cdata, dsize - 1);
        for (i = 0; i < dsize - 1; i++)
                PCUT_ASSERT_INT_EQUALS(data[i + 1], cdata[i]);

        tcp_segment_trim(seg, 0, 1);
        PCUT_ASSERT_INT_EQUALS(0, seg->ctrl);
        PCUT_ASSERT_INT_EQUALS(dsize - 2, tcp_segment_text_size(seg));

        tcp_segment_text_copy(seg, cdata, dsize - 2);
        for (i = 0; i < dsize - 2; i++)
                PCUT_ASSERT_INT_EQUALS(data[i + 1], cdata[i]);

        tcp_segment_delete(seg);
        free(data);
        free(cdata);
}

PCUT_EXPORT(segment);