1 /*-
2 * Copyright (c) 2003-2023 Tim Kientzle
3 * Copyright (c) 2008 Anselm Strauss
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 #include "test.h"
28
29 /*
30 * Detailed byte-for-byte verification of the format of a zip archive
31 * written in streaming mode with Zip64 extensions enabled.
32 */
33
DEFINE_TEST(test_write_format_zip64_stream)34 DEFINE_TEST(test_write_format_zip64_stream)
35 {
36 struct archive *a;
37 struct archive_entry *ae;
38 size_t used, buffsize = 1000000;
39 unsigned long crc;
40 unsigned long compressed_size = 0;
41 __LA_MODE_T file_perm = 00644;
42 int zip_version = 45;
43 int zip_compression = 8;
44 short file_uid = 10, file_gid = 20;
45 unsigned char *buff, *buffend, *p;
46 unsigned char *central_header, *local_header, *eocd, *eocd_record;
47 unsigned char *extension_start, *extension_end;
48 unsigned char *data_start, *data_end;
49 char file_data[] = {'1', '2', '3', '4', '5', '6', '7', '8'};
50 const char *file_name = "file";
51
52 #ifndef HAVE_ZLIB_H
53 zip_compression = 0;
54 #endif
55
56 buff = malloc(buffsize);
57
58 /* Create a new archive in memory. */
59 assert((a = archive_write_new()) != NULL);
60 assertEqualIntA(a, ARCHIVE_OK, archive_write_set_format_zip(a));
61 assertEqualIntA(a, ARCHIVE_OK,
62 archive_write_set_options(a, "zip:zip64"));
63 assertEqualIntA(a, ARCHIVE_OK,
64 archive_write_set_options(a, "zip:experimental"));
65 assertEqualIntA(a, ARCHIVE_OK,
66 archive_write_open_memory(a, buff, buffsize, &used));
67
68 assert((ae = archive_entry_new()) != NULL);
69 archive_entry_copy_pathname(ae, file_name);
70 archive_entry_set_mode(ae, AE_IFREG | file_perm);
71 archive_entry_set_uid(ae, file_uid);
72 archive_entry_set_gid(ae, file_gid);
73 archive_entry_set_mtime(ae, 0, 0);
74 assertEqualInt(0, archive_write_header(a, ae));
75 archive_entry_free(ae);
76 assertEqualInt(8, archive_write_data(a, file_data, sizeof(file_data)));
77 assertEqualIntA(a, ARCHIVE_OK, archive_write_close(a));
78 assertEqualInt(ARCHIVE_OK, archive_write_free(a));
79 buffend = buff + used;
80 dumpfile("constructed.zip", buff, used);
81
82 /* Verify "End of Central Directory" record. */
83 /* Get address of end-of-central-directory record. */
84 eocd_record = p = buffend - 22; /* Assumes there is no zip comment field. */
85 failure("End-of-central-directory begins with PK\\005\\006 signature");
86 assertEqualMem(p, "PK\005\006", 4);
87 failure("This must be disk 0");
88 assertEqualInt(i2le(p + 4), 0);
89 failure("Central dir must start on disk 0");
90 assertEqualInt(i2le(p + 6), 0);
91 failure("All central dir entries are on this disk");
92 assertEqualInt(i2le(p + 8), i2le(p + 10));
93 eocd = buff + i4le(p + 12) + i4le(p + 16);
94 failure("no zip comment");
95 assertEqualInt(i2le(p + 20), 0);
96
97 /* Get address of first entry in central directory. */
98 central_header = p = buff + i4le(buffend - 6);
99 failure("Central file record at offset %u should begin with"
100 " PK\\001\\002 signature",
101 i4le(buffend - 10));
102
103 /* Verify file entry in central directory. */
104 assertEqualMem(p, "PK\001\002", 4); /* Signature */
105 assertEqualInt(i2le(p + 4), 3 * 256 + zip_version); /* Version made by */
106 assertEqualInt(i2le(p + 6), zip_version); /* Version needed to extract */
107 assertEqualInt(i2le(p + 8), 8); /* Flags */
108 assertEqualInt(i2le(p + 10), zip_compression); /* Compression method */
109 assertEqualInt(i2le(p + 12), 0); /* File time */
110 assertEqualInt(i2le(p + 14), 33); /* File date */
111 crc = bitcrc32(0, file_data, sizeof(file_data));
112 assertEqualInt(i4le(p + 16), crc); /* CRC-32 */
113 compressed_size = i4le(p + 20); /* Compressed size */
114 assertEqualInt(i4le(p + 24), sizeof(file_data)); /* Uncompressed size */
115 assertEqualInt(i2le(p + 28), strlen(file_name)); /* Pathname length */
116 /* assertEqualInt(i2le(p + 30), 28); */ /* Extra field length: See below */
117 assertEqualInt(i2le(p + 32), 0); /* File comment length */
118 assertEqualInt(i2le(p + 34), 0); /* Disk number start */
119 assertEqualInt(i2le(p + 36), 0); /* Internal file attrs */
120 assertEqualInt(i4le(p + 38) >> 16 & 01777, file_perm); /* External file attrs */
121 assertEqualInt(i4le(p + 42), 0); /* Offset of local header */
122 assertEqualMem(p + 46, file_name, strlen(file_name)); /* Pathname */
123 p = extension_start = central_header + 46 + strlen(file_name);
124 extension_end = extension_start + i2le(central_header + 30);
125
126 assertEqualInt(i2le(p), 0x7875); /* 'ux' extension header */
127 assertEqualInt(i2le(p + 2), 11); /* 'ux' size */
128 /* TODO: verify 'ux' contents */
129 p += 4 + i2le(p + 2);
130
131 assertEqualInt(i2le(p), 0x5455); /* 'UT' extension header */
132 assertEqualInt(i2le(p + 2), 5); /* 'UT' size */
133 assertEqualInt(p[4], 1); /* 'UT' flags */
134 assertEqualInt(i4le(p + 5), 0); /* 'UT' mtime */
135 p += 4 + i2le(p + 2);
136
137 /* Note: We don't expect to see zip64 extension in the central
138 * directory, since the writer knows the actual full size by
139 * the time it is ready to write the central directory and has
140 * no reason to insert it then. Info-Zip seems to do the same
141 * thing. */
142
143 /* Just in case: Report any extra extensions. */
144 while (p < extension_end) {
145 failure("Unexpected extension 0x%04X", i2le(p));
146 assert(0);
147 p += 4 + i2le(p + 2);
148 }
149
150 /* Should have run exactly to end of extra data. */
151 assertEqualAddress(p, extension_end);
152
153 assertEqualAddress(p, eocd);
154
155 /* After Central dir, we find Zip64 eocd and Zip64 eocd locator. */
156 assertEqualMem(p, "PK\006\006", 4); /* Zip64 eocd */
157 assertEqualInt(i8le(p + 4), 44); /* We're using v1 Zip64 eocd */
158 assertEqualInt(i2le(p + 12), 45); /* Written by Version 4.5 */
159 assertEqualInt(i2le(p + 14), 45); /* Needs version 4.5 to extract */
160 assertEqualInt(i4le(p + 16), 0); /* This is disk #0 */
161 assertEqualInt(i4le(p + 20), 0); /* Dir starts on disk #0 */
162 assertEqualInt(i8le(p + 24), 1); /* 1 entry on this disk */
163 assertEqualInt(i8le(p + 32), 1); /* 1 entry total */
164 assertEqualInt(i8le(p + 40), eocd - central_header); /* size of cd */
165 assertEqualInt(i8le(p + 48), central_header - buff); /* start of cd */
166 p += 12 + i8le(p + 4);
167
168 assertEqualMem(p, "PK\006\007", 4); /* Zip64 eocd locator */
169 assertEqualInt(i4le(p + 4), 0); /* Zip64 eocd is on disk #0 */
170 assertEqualInt(i8le(p + 8), eocd - buff); /* Offset of Zip64 eocd */
171 assertEqualInt(i4le(p + 16), 1); /* 1 disk */
172 p += 20;
173
174 /* Regular EOCD immediately follows Zip64 records. */
175 assertEqualAddress(p, eocd_record);
176
177 /* Verify local header of file entry. */
178 p = local_header = buff;
179 assertEqualMem(p, "PK\003\004", 4); /* Signature */
180 assertEqualInt(i2le(p + 4), zip_version); /* Version needed to extract */
181 assertEqualInt(i2le(p + 6), 8); /* Flags: bit 3 = length-at-end */
182 assertEqualInt(i2le(p + 8), zip_compression); /* Compression method */
183 assertEqualInt(i2le(p + 10), 0); /* File time */
184 assertEqualInt(i2le(p + 12), 33); /* File date */
185 assertEqualInt(i4le(p + 14), 0); /* CRC-32 */
186 assertEqualInt(i4le(p + 18), 0); /* Compressed size must be zero for length-at-end */
187 assertEqualInt(i4le(p + 22), 0); /* Uncompressed size must be zero for length-at-end */
188 assertEqualInt(i2le(p + 26), strlen(file_name)); /* Pathname length */
189 assertEqualInt(i2le(p + 28), 37); /* Extra field length */
190 assertEqualMem(p + 30, file_name, strlen(file_name)); /* Pathname */
191 p = extension_start = local_header + 30 + strlen(file_name);
192 extension_end = extension_start + i2le(local_header + 28);
193
194 assertEqualInt(i2le(p), 0x7875); /* 'ux' extension header */
195 assertEqualInt(i2le(p + 2), 11); /* 'ux' size */
196 assertEqualInt(p[4], 1); /* 'ux' version */
197 assertEqualInt(p[5], 4); /* 'ux' uid size */
198 assertEqualInt(i4le(p + 6), file_uid); /* 'Ux' UID */
199 assertEqualInt(p[10], 4); /* 'ux' gid size */
200 assertEqualInt(i4le(p + 11), file_gid); /* 'Ux' GID */
201 p += 4 + i2le(p + 2);
202
203 assertEqualInt(i2le(p), 0x5455); /* 'UT' extension header */
204 assertEqualInt(i2le(p + 2), 5); /* 'UT' size */
205 assertEqualInt(p[4], 1); /* 'UT' flags */
206 assertEqualInt(i4le(p + 5), 0); /* 'UT' mtime */
207 p += 4 + i2le(p + 2);
208
209 assertEqualInt(i2le(p), 0x6c78); /* 'xl' experimental extension header */
210 assertEqualInt(i2le(p + 2), 9); /* size */
211 assertEqualInt(p[4], 7); /* bitmap of included fields */
212 assertEqualInt(i2le(p + 5) >> 8, 3); /* system & version made by */
213 assertEqualInt(i2le(p + 7), 0); /* internal file attributes */
214 assertEqualInt(i4le(p + 9) >> 16 & 01777, file_perm); /* external file attributes */
215 p += 4 + i2le(p + 2);
216
217 /* Just in case: Report any extra extensions. */
218 while (p < extension_end) {
219 failure("Unexpected extension 0x%04X", i2le(p));
220 assert(0);
221 p += 4 + i2le(p + 2);
222 }
223
224 /* Should have run exactly to end of extra data. */
225 assertEqualAddress(p, extension_end);
226 data_start = p;
227
228 /* Data descriptor should follow compressed data. */
229 while (p < central_header && memcmp(p, "PK\007\010", 4) != 0)
230 ++p;
231 data_end = p;
232 assertEqualInt(data_end - data_start, compressed_size);
233 assertEqualMem(p, "PK\007\010", 4);
234 assertEqualInt(i4le(p + 4), crc); /* CRC-32 */
235 assertEqualInt(i8le(p + 8), compressed_size); /* compressed size */
236 assertEqualInt(i8le(p + 16), sizeof(file_data)); /* uncompressed size */
237
238 /* Central directory should immediately follow the only entry. */
239 assertEqualAddress(p + 24, central_header);
240
241 free(buff);
242 }
243