1 /*- 2 * Copyright (c) 2016 Tim Kientzle 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 #include "test.h" 26 __FBSDID("$FreeBSD"); 27 28 #include <locale.h> 29 30 31 /* 32 * Github Issue 748 reported problems with end-of-entry handling 33 * with highly-compressible data. This resulted in the end of the 34 * data being truncated (extracted as zero bytes). 35 */ 36 37 /* 38 * Extract the specific test archive that was used to diagnose 39 * Issue 748: 40 */ 41 DEFINE_TEST(test_read_format_zip_high_compression) 42 { 43 const char *refname = "test_read_format_zip_high_compression.zip"; 44 char *p; 45 size_t archive_size; 46 struct archive *a; 47 struct archive_entry *entry; 48 49 const void *pv; 50 size_t s; 51 int64_t o; 52 53 if (archive_zlib_version() == NULL) { 54 skipping("Zip compression test requires zlib"); 55 return; 56 } 57 58 extract_reference_file(refname); 59 p = slurpfile(&archive_size, refname); 60 61 assert((a = archive_read_new()) != NULL); 62 assertEqualIntA(a, ARCHIVE_OK, archive_read_support_format_zip(a)); 63 assertEqualIntA(a, ARCHIVE_OK, read_open_memory_seek(a, p, archive_size, 16 * 1024)); 64 assertEqualInt(ARCHIVE_OK, archive_read_next_header(a, &entry)); 65 66 assertEqualInt(ARCHIVE_OK, archive_read_data_block(a, &pv, &s, &o)); 67 assertEqualInt(262144, s); 68 assertEqualInt(0, o); 69 70 assertEqualInt(ARCHIVE_OK, archive_read_data_block(a, &pv, &s, &o)); 71 assertEqualInt(160, s); 72 assertEqualInt(262144, o); 73 74 assertEqualInt(ARCHIVE_EOF, archive_read_data_block(a, &pv, &s, &o)); 75 76 assertEqualInt(ARCHIVE_OK, archive_free(a)); 77 free(p); 78 } 79 80 /* 81 * Synthesize a lot of varying inputs that are highly compressible. 82 */ 83 DEFINE_TEST(test_read_format_zip_high_compression2) 84 { 85 const size_t body_size = 1024 * 1024; 86 const size_t buff_size = 2 * 1024 * 1024; 87 char *body, *body_read, *buff; 88 int n; 89 90 if (archive_zlib_version() == NULL) { 91 skipping("Zip compression test requires zlib"); 92 return; 93 } 94 95 assert((body = malloc(body_size)) != NULL); 96 assert((body_read = malloc(body_size)) != NULL); 97 assert((buff = malloc(buff_size)) != NULL); 98 99 /* Highly-compressible data: all bytes 255, except for a 100 * single 1 byte. 101 * The body is always 256k + 6 bytes long (the internal deflation 102 * buffer is exactly 256k). 103 */ 104 105 for(n = 1024; n < (int)body_size; n += 1024) { 106 struct archive *a; 107 struct archive_entry *entry; 108 size_t used = 0; 109 const void *pv; 110 size_t s; 111 int64_t o; 112 113 memset(body, 255, body_size); 114 body[n] = 1; 115 116 /* Write an archive with a single entry of n bytes. */ 117 assert((a = archive_write_new()) != NULL); 118 assertEqualInt(ARCHIVE_OK, archive_write_set_format_zip(a)); 119 assertEqualInt(ARCHIVE_OK, archive_write_open_memory(a, buff, buff_size, &used)); 120 121 entry = archive_entry_new2(a); 122 archive_entry_set_pathname(entry, "test"); 123 archive_entry_set_filetype(entry, AE_IFREG); 124 archive_entry_set_size(entry, 262150); 125 assertEqualInt(ARCHIVE_OK, archive_write_header(a, entry)); 126 archive_entry_free(entry); 127 assertEqualInt(262150, archive_write_data(a, body, 262150)); 128 assertEqualInt(ARCHIVE_OK, archive_write_free(a)); 129 130 /* Read back the entry and verify the contents. */ 131 assert((a = archive_read_new()) != NULL); 132 assertEqualIntA(a, ARCHIVE_OK, archive_read_support_format_all(a)); 133 assertEqualIntA(a, ARCHIVE_OK, archive_read_support_filter_all(a)); 134 assertEqualIntA(a, ARCHIVE_OK, read_open_memory(a, buff, used, 17)); 135 assertEqualInt(ARCHIVE_OK, archive_read_next_header(a, &entry)); 136 137 assertEqualInt(ARCHIVE_OK, archive_read_data_block(a, &pv, &s, &o)); 138 assertEqualInt(262144, s); 139 assertEqualInt(0, o); 140 141 assertEqualInt(ARCHIVE_OK, archive_read_data_block(a, &pv, &s, &o)); 142 assertEqualInt(6, s); 143 assertEqualInt(262144, o); 144 145 assertEqualInt(ARCHIVE_EOF, archive_read_data_block(a, &pv, &s, &o)); 146 147 assertEqualInt(ARCHIVE_OK, archive_free(a)); 148 } 149 150 free(body); 151 free(body_read); 152 free(buff); 153 } 154