| /*- |
| * Copyright (c) 2003-2007,2016 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("$FreeBSD$"); |
| |
| #define UMASK 022 |
| |
| /* |
| * Github Issue #744 describes a bug in the sandboxing code that |
| * causes very long pathnames to not get checked for symlinks. |
| */ |
| |
| DEFINE_TEST(test_write_disk_secure744) |
| { |
| #if defined(_WIN32) && !defined(__CYGWIN__) |
| skipping("archive_write_disk security checks not supported on Windows"); |
| #else |
| struct archive *a; |
| struct archive_entry *ae; |
| size_t buff_size = 8192; |
| char *buff = malloc(buff_size); |
| char *p = buff; |
| int n = 0; |
| int t; |
| |
| assert(buff != NULL); |
| |
| /* Start with a known umask. */ |
| assertUmask(UMASK); |
| |
| /* Create an archive_write_disk object. */ |
| assert((a = archive_write_disk_new()) != NULL); |
| archive_write_disk_set_options(a, ARCHIVE_EXTRACT_SECURE_SYMLINKS); |
| |
| while (p + 500 < buff + buff_size) { |
| memset(p, 'x', 100); |
| p += 100; |
| p[0] = '\0'; |
| |
| buff[0] = ((n / 1000) % 10) + '0'; |
| buff[1] = ((n / 100) % 10)+ '0'; |
| buff[2] = ((n / 10) % 10)+ '0'; |
| buff[3] = ((n / 1) % 10)+ '0'; |
| buff[4] = '_'; |
| ++n; |
| |
| /* Create a symlink pointing to the testworkdir */ |
| assert((ae = archive_entry_new()) != NULL); |
| archive_entry_copy_pathname(ae, buff); |
| archive_entry_set_mode(ae, S_IFREG | 0777); |
| archive_entry_copy_symlink(ae, testworkdir); |
| assertEqualIntA(a, ARCHIVE_OK, archive_write_header(a, ae)); |
| archive_entry_free(ae); |
| |
| *p++ = '/'; |
| sprintf(p, "target%d", n); |
| |
| /* Try to create a file through the symlink, should fail. */ |
| assert((ae = archive_entry_new()) != NULL); |
| archive_entry_copy_pathname(ae, buff); |
| archive_entry_set_mode(ae, S_IFDIR | 0777); |
| |
| t = archive_write_header(a, ae); |
| archive_entry_free(ae); |
| failure("Attempt to create target%d via %d-character symlink should have failed", n, (int)strlen(buff)); |
| if(!assertEqualInt(ARCHIVE_FAILED, t)) { |
| break; |
| } |
| } |
| archive_free(a); |
| free(buff); |
| #endif |
| } |