mirror of
https://github.com/cmclark00/retro-imager.git
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95 lines
3.1 KiB
C
95 lines
3.1 KiB
C
/*-
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* Copyright (c) 2003-2007,2016 Tim Kientzle
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "test.h"
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__FBSDID("$FreeBSD$");
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#define UMASK 022
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/*
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* Github Issue #744 describes a bug in the sandboxing code that
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* causes very long pathnames to not get checked for symlinks.
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*/
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DEFINE_TEST(test_write_disk_secure744)
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{
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#if defined(_WIN32) && !defined(__CYGWIN__)
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skipping("archive_write_disk security checks not supported on Windows");
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#else
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struct archive *a;
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struct archive_entry *ae;
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size_t buff_size = 8192;
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char *buff = malloc(buff_size);
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char *p = buff;
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int n = 0;
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int t;
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assert(buff != NULL);
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/* Start with a known umask. */
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assertUmask(UMASK);
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/* Create an archive_write_disk object. */
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assert((a = archive_write_disk_new()) != NULL);
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archive_write_disk_set_options(a, ARCHIVE_EXTRACT_SECURE_SYMLINKS);
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while (p + 500 < buff + buff_size) {
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memset(p, 'x', 100);
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p += 100;
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p[0] = '\0';
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buff[0] = ((n / 1000) % 10) + '0';
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buff[1] = ((n / 100) % 10)+ '0';
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buff[2] = ((n / 10) % 10)+ '0';
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buff[3] = ((n / 1) % 10)+ '0';
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buff[4] = '_';
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++n;
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/* Create a symlink pointing to the testworkdir */
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assert((ae = archive_entry_new()) != NULL);
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archive_entry_copy_pathname(ae, buff);
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archive_entry_set_mode(ae, S_IFREG | 0777);
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archive_entry_copy_symlink(ae, testworkdir);
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assertEqualIntA(a, ARCHIVE_OK, archive_write_header(a, ae));
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archive_entry_free(ae);
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*p++ = '/';
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sprintf(p, "target%d", n);
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/* Try to create a file through the symlink, should fail. */
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assert((ae = archive_entry_new()) != NULL);
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archive_entry_copy_pathname(ae, buff);
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archive_entry_set_mode(ae, S_IFDIR | 0777);
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t = archive_write_header(a, ae);
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archive_entry_free(ae);
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failure("Attempt to create target%d via %d-character symlink should have failed", n, (int)strlen(buff));
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if(!assertEqualInt(ARCHIVE_FAILED, t)) {
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break;
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}
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}
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archive_free(a);
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free(buff);
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#endif
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}
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