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 WITHOUT Zip64 extensions enabled.
32 */
33
DEFINE_TEST(test_write_format_zip_stream)34 DEFINE_TEST(test_write_format_zip_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 #ifdef HAVE_ZLIB_H
43 int zip_version = 20;
44 #else
45 int zip_version = 10;
46 #endif
47 int zip_compression = 8;
48 short file_uid = 10, file_gid = 20;
49 unsigned char *buff, *buffend, *p;
50 unsigned char *central_header, *local_header, *eocd, *eocd_record;
51 unsigned char *extension_start, *extension_end;
52 unsigned char *data_start, *data_end;
53 char file_data[] = {'1', '2', '3', '4', '5', '6', '7', '8'};
54 const char *file_name = "file";
55
56 #ifndef HAVE_ZLIB_H
57 zip_version = 10;
58 zip_compression = 0;
59 #endif
60
61 buff = malloc(buffsize);
62
63 /* Create a new archive in memory. */
64 assert((a = archive_write_new()) != NULL);
65 assertEqualIntA(a, ARCHIVE_OK, archive_write_set_format_zip(a));
66 assertEqualIntA(a, ARCHIVE_OK,
67 archive_write_set_options(a, "zip:!zip64"));
68 assertEqualIntA(a, ARCHIVE_OK,
69 archive_write_open_memory(a, buff, buffsize, &used));
70
71 assert((ae = archive_entry_new()) != NULL);
72 archive_entry_copy_pathname(ae, file_name);
73 archive_entry_set_mode(ae, AE_IFREG | file_perm);
74 archive_entry_set_uid(ae, file_uid);
75 archive_entry_set_gid(ae, file_gid);
76 archive_entry_set_mtime(ae, 0, 0);
77 assertEqualInt(0, archive_write_header(a, ae));
78 archive_entry_free(ae);
79 assertEqualInt(8, archive_write_data(a, file_data, sizeof(file_data)));
80 assertEqualIntA(a, ARCHIVE_OK, archive_write_close(a));
81 assertEqualInt(ARCHIVE_OK, archive_write_free(a));
82 buffend = buff + used;
83 dumpfile("constructed.zip", buff, used);
84
85 /* Verify "End of Central Directory" record. */
86 /* Get address of end-of-central-directory record. */
87 eocd_record = p = buffend - 22; /* Assumes there is no zip comment field. */
88 failure("End-of-central-directory begins with PK\\005\\006 signature");
89 assertEqualMem(p, "PK\005\006", 4);
90 failure("This must be disk 0");
91 assertEqualInt(i2le(p + 4), 0);
92 failure("Central dir must start on disk 0");
93 assertEqualInt(i2le(p + 6), 0);
94 failure("All central dir entries are on this disk");
95 assertEqualInt(i2le(p + 8), i2le(p + 10));
96 eocd = buff + i4le(p + 12) + i4le(p + 16);
97 failure("no zip comment");
98 assertEqualInt(i2le(p + 20), 0);
99
100 /* Get address of first entry in central directory. */
101 central_header = p = buff + i4le(buffend - 6);
102 failure("Central file record at offset %u should begin with"
103 " PK\\001\\002 signature",
104 i4le(buffend - 10));
105
106 /* Verify file entry in central directory. */
107 assertEqualMem(p, "PK\001\002", 4); /* Signature */
108 assertEqualInt(i2le(p + 4), 3 * 256 + zip_version); /* Version made by */
109 assertEqualInt(i2le(p + 6), zip_version); /* Version needed to extract */
110 assertEqualInt(i2le(p + 8), 8); /* Flags */
111 assertEqualInt(i2le(p + 10), zip_compression); /* Compression method */
112 assertEqualInt(i2le(p + 12), 0); /* File time */
113 assertEqualInt(i2le(p + 14), 33); /* File date */
114 crc = bitcrc32(0, file_data, sizeof(file_data));
115 assertEqualInt(i4le(p + 16), crc); /* CRC-32 */
116 compressed_size = i4le(p + 20); /* Compressed size */
117 assertEqualInt(i4le(p + 24), sizeof(file_data)); /* Uncompressed size */
118 assertEqualInt(i2le(p + 28), strlen(file_name)); /* Pathname length */
119 /* assertEqualInt(i2le(p + 30), 28); */ /* Extra field length: See below */
120 assertEqualInt(i2le(p + 32), 0); /* File comment length */
121 assertEqualInt(i2le(p + 34), 0); /* Disk number start */
122 assertEqualInt(i2le(p + 36), 0); /* Internal file attrs */
123 assertEqualInt(i4le(p + 38) >> 16 & 01777, file_perm); /* External file attrs */
124 assertEqualInt(i4le(p + 42), 0); /* Offset of local header */
125 assertEqualMem(p + 46, file_name, strlen(file_name)); /* Pathname */
126 p = extension_start = central_header + 46 + strlen(file_name);
127 extension_end = extension_start + i2le(central_header + 30);
128
129 assertEqualInt(i2le(p), 0x7875); /* 'ux' extension header */
130 assertEqualInt(i2le(p + 2), 11); /* 'ux' size */
131 assertEqualInt(p[4], 1); /* 'ux' version */
132 assertEqualInt(p[5], 4); /* 'ux' uid size */
133 assertEqualInt(i4le(p + 6), file_uid); /* 'Ux' UID */
134 assertEqualInt(p[10], 4); /* 'ux' gid size */
135 assertEqualInt(i4le(p + 11), file_gid); /* 'Ux' GID */
136 p += 4 + i2le(p + 2);
137
138 assertEqualInt(i2le(p), 0x5455); /* 'UT' extension header */
139 assertEqualInt(i2le(p + 2), 5); /* 'UT' size */
140 assertEqualInt(p[4], 1); /* 'UT' flags */
141 assertEqualInt(i4le(p + 5), 0); /* 'UT' mtime */
142 p += 4 + i2le(p + 2);
143
144 /* Note: We don't expect to see zip64 extension in the central
145 * directory, since the writer knows the actual full size by
146 * the time it is ready to write the central directory and has
147 * no reason to insert it then. Info-Zip seems to do the same
148 * thing. */
149
150 /* Just in case: Report any extra extensions. */
151 while (p < extension_end) {
152 failure("Unexpected extension 0x%04X", i2le(p));
153 assert(0);
154 p += 4 + i2le(p + 2);
155 }
156
157 /* Should have run exactly to end of extra data. */
158 assert(p == extension_end);
159
160 assert(p == eocd);
161 assert(p == eocd_record);
162
163 /* Verify local header of file entry. */
164 p = local_header = buff;
165 assertEqualMem(p, "PK\003\004", 4); /* Signature */
166 assertEqualInt(i2le(p + 4), zip_version); /* Version needed to extract */
167 assertEqualInt(i2le(p + 6), 8); /* Flags */
168 assertEqualInt(i2le(p + 8), zip_compression); /* Compression method */
169 assertEqualInt(i2le(p + 10), 0); /* File time */
170 assertEqualInt(i2le(p + 12), 33); /* File date */
171 assertEqualInt(i4le(p + 14), 0); /* CRC-32 */
172 assertEqualInt(i4le(p + 18), 0); /* Compressed size */
173 assertEqualInt(i4le(p + 22), 0); /* Uncompressed size */
174 assertEqualInt(i2le(p + 26), strlen(file_name)); /* Pathname length */
175 assertEqualInt(i2le(p + 28), 24); /* Extra field length */
176 assertEqualMem(p + 30, file_name, strlen(file_name)); /* Pathname */
177 p = extension_start = local_header + 30 + strlen(file_name);
178 extension_end = extension_start + i2le(local_header + 28);
179
180 assertEqualInt(i2le(p), 0x7875); /* 'ux' extension header */
181 assertEqualInt(i2le(p + 2), 11); /* 'ux' size */
182 assertEqualInt(p[4], 1); /* 'ux' version */
183 assertEqualInt(p[5], 4); /* 'ux' uid size */
184 assertEqualInt(i4le(p + 6), file_uid); /* 'Ux' UID */
185 assertEqualInt(p[10], 4); /* 'ux' gid size */
186 assertEqualInt(i4le(p + 11), file_gid); /* 'Ux' GID */
187 p += 4 + i2le(p + 2);
188
189 assertEqualInt(i2le(p), 0x5455); /* 'UT' extension header */
190 assertEqualInt(i2le(p + 2), 5); /* 'UT' size */
191 assertEqualInt(p[4], 1); /* 'UT' flags */
192 assertEqualInt(i4le(p + 5), 0); /* 'UT' mtime */
193 p += 4 + i2le(p + 2);
194
195 /* Just in case: Report any extra extensions. */
196 while (p < extension_end) {
197 failure("Unexpected extension 0x%04X", i2le(p));
198 assert(0);
199 p += 4 + i2le(p + 2);
200 }
201
202 /* Should have run exactly to end of extra data. */
203 assert(p == extension_end);
204 data_start = p;
205
206 /* Data descriptor should follow compressed data. */
207 while (p < central_header && memcmp(p, "PK\007\010", 4) != 0)
208 ++p;
209 data_end = p;
210 assertEqualInt(data_end - data_start, compressed_size);
211 assertEqualMem(p, "PK\007\010", 4);
212 assertEqualInt(i4le(p + 4), crc); /* CRC-32 */
213 assertEqualInt(i4le(p + 8), compressed_size); /* compressed size */
214 assertEqualInt(i4le(p + 12), sizeof(file_data)); /* uncompressed size */
215
216 /* Central directory should immediately follow the data descriptor. */
217 assert(p + 16 == central_header);
218
219 free(buff);
220 }
221