CMake/Utilities/cmlibarchive/libarchive/test/test_read_truncated.c

/*-
 * Copyright (c) 2003-2007 Tim Kientzle
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``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(S) 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 "test.h"
__FBSDID("$FreeBSD: src/lib/libarchive/test/test_read_truncated.c,v 1.4 2008/09/01 05:38:33 kientzle Exp $");

char buff[1000000];
char buff2[100000];

DEFINE_TEST(test_read_truncated)
{
    struct archive_entry *ae;
    struct archive *a;
    unsigned int i;
    size_t used;

    /* Create a new archive in memory. */
    assert((a = archive_write_new()) != NULL);
    assertA(0 == archive_write_set_format_ustar(a));
    assertA(0 == archive_write_set_compression_none(a));
    assertA(0 == archive_write_open_memory(a, buff, sizeof(buff), &used));

    /*
     * Write a file to it.
     */
    assert((ae = archive_entry_new()) != NULL);
    archive_entry_copy_pathname(ae, "file");
    archive_entry_set_mode(ae, S_IFREG | 0755);
    for (i = 0; i < sizeof(buff2); i++)
        buff2[i] = (unsigned char)rand();
    archive_entry_set_size(ae, sizeof(buff2));
    assertA(0 == archive_write_header(a, ae));
    archive_entry_free(ae);
    assertA(sizeof(buff2) == archive_write_data(a, buff2, sizeof(buff2)));

    /* Close out the archive. */
    assertA(0 == archive_write_close(a));
#if ARCHIVE_VERSION_NUMBER < 2000000
    archive_write_finish(a);
#else
    assertA(0 == archive_write_finish(a));
#endif

    /* Now, read back a truncated version of the archive and
     * verify that we get an appropriate error. */
    for (i = 1; i < used + 100; i += 100) {
        assert((a = archive_read_new()) != NULL);
        assertA(0 == archive_read_support_format_all(a));
        assertA(0 == archive_read_support_compression_all(a));
        assertA(0 == archive_read_open_memory(a, buff, i));

        if (i < 512) {
            assertA(ARCHIVE_FATAL == archive_read_next_header(a, &ae));
            goto wrap_up;
        } else {
            assertA(0 == archive_read_next_header(a, &ae));
        }

        if (i < 512 + sizeof(buff2)) {
            assertA(ARCHIVE_FATAL == archive_read_data(a, buff2, sizeof(buff2)));
            goto wrap_up;
        } else {
            assertA(sizeof(buff2) == archive_read_data(a, buff2, sizeof(buff2)));
        }

        /* Verify the end of the archive. */
        /* Archive must be long enough to capture a 512-byte
         * block of zeroes after the entry.  (POSIX requires a
         * second block of zeros to be written but libarchive
         * does not return an error if it can't consume
         * it.) */
        if (i < 512 + 512*((sizeof(buff2) + 511)/512) + 512) {
            assertA(ARCHIVE_FATAL == archive_read_next_header(a, &ae));
        } else {
            assertA(ARCHIVE_EOF == archive_read_next_header(a, &ae));
        }
    wrap_up:
        assert(0 == archive_read_close(a));
#if ARCHIVE_VERSION_NUMBER < 2000000
        archive_read_finish(a);
#else
        assert(0 == archive_read_finish(a));
#endif
    }



    /* Same as above, except skip the body instead of reading it. */
    for (i = 1; i < used + 100; i += 100) {
        assert((a = archive_read_new()) != NULL);
        assertA(0 == archive_read_support_format_all(a));
        assertA(0 == archive_read_support_compression_all(a));
        assertA(0 == archive_read_open_memory(a, buff, i));

        if (i < 512) {
            assertA(ARCHIVE_FATAL == archive_read_next_header(a, &ae));
            goto wrap_up2;
        } else {
            assertA(0 == archive_read_next_header(a, &ae));
        }

        if (i < 512 + 512*((sizeof(buff2)+511)/512)) {
            assertA(ARCHIVE_FATAL == archive_read_data_skip(a));
            goto wrap_up2;
        } else {
            assertA(ARCHIVE_OK == archive_read_data_skip(a));
        }

        /* Verify the end of the archive. */
        /* Archive must be long enough to capture a 512-byte
         * block of zeroes after the entry.  (POSIX requires a
         * second block of zeros to be written but libarchive
         * does not return an error if it can't consume
         * it.) */
        if (i < 512 + 512*((sizeof(buff2) + 511)/512) + 512) {
            assertA(ARCHIVE_FATAL == archive_read_next_header(a, &ae));
        } else {
            assertA(ARCHIVE_EOF == archive_read_next_header(a, &ae));
        }
    wrap_up2:
        assert(0 == archive_read_close(a));
#if ARCHIVE_VERSION_NUMBER < 2000000
        archive_read_finish(a);
#else
        assert(0 == archive_read_finish(a));
#endif
    }
}