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MFC r368207,368607:
[FreeBSD/stable/10.git] / contrib / libarchive / libarchive / test / test_write_format_zip_large.c
1 /*-
2  * Copyright (c) 2003-2007,2013 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 <errno.h>
29 #include <stdlib.h>
30 #include <string.h>
31
32 /*
33  * This is a somewhat tricky test that verifies the ability to
34  * write and read very large entries to zip archives.
35  *
36  * See test_tar_large.c for more information about the machinery
37  * being used here.
38  */
39
40 static size_t nullsize;
41 static void *nulldata;
42
43 struct fileblock {
44         struct fileblock *next;
45         int     size;
46         void *buff;
47         int64_t gap_size; /* Size of following gap */
48 };
49
50 struct fileblocks {
51         int64_t filesize;
52         int64_t fileposition;
53         int64_t gap_remaining;
54         void *buff;
55         struct fileblock *first;
56         struct fileblock *current;
57         struct fileblock *last;
58 };
59
60 /* The following size definitions simplify things below. */
61 #define KB ((int64_t)1024)
62 #define MB ((int64_t)1024 * KB)
63 #define GB ((int64_t)1024 * MB)
64 #define TB ((int64_t)1024 * GB)
65
66 static int64_t  memory_read_skip(struct archive *, void *, int64_t request);
67 static ssize_t  memory_read(struct archive *, void *, const void **buff);
68 static ssize_t  memory_write(struct archive *, void *, const void *, size_t);
69
70 static uint16_t le16(const void *_p) {
71         const uint8_t *p = _p;
72         return p[0] | (p[1] << 8);
73 }
74
75 static uint32_t le32(const void *_p) {
76         const uint8_t *p = _p;
77         return le16(p) | ((uint32_t)le16(p + 2) << 16);
78 }
79
80 static uint64_t le64(const void *_p) {
81         const uint8_t *p = _p;
82         return le32(p) | ((uint64_t)le32(p + 4) << 32);
83 }
84
85 static ssize_t
86 memory_write(struct archive *a, void *_private, const void *buff, size_t size)
87 {
88         struct fileblocks *private = _private;
89         struct fileblock *block;
90
91         (void)a;
92
93         if ((const char *)nulldata <= (const char *)buff
94             && (const char *)buff < (const char *)nulldata + nullsize) {
95                 /* We don't need to store a block of gap data. */
96                 private->last->gap_size += (int64_t)size;
97         } else {
98                 /* Yes, we're assuming the very first write is metadata. */
99                 /* It's header or metadata, copy and save it. */
100                 block = (struct fileblock *)malloc(sizeof(*block));
101                 memset(block, 0, sizeof(*block));
102                 block->size = (int)size;
103                 block->buff = malloc(size);
104                 memcpy(block->buff, buff, size);
105                 if (private->last == NULL) {
106                         private->first = private->last = block;
107                 } else {
108                         private->last->next = block;
109                         private->last = block;
110                 }
111                 block->next = NULL;
112         }
113         private->filesize += size;
114         return ((long)size);
115 }
116
117 static ssize_t
118 memory_read(struct archive *a, void *_private, const void **buff)
119 {
120         struct fileblocks *private = _private;
121         ssize_t size;
122
123         (void)a;
124
125         while (private->current != NULL && private->buff == NULL && private->gap_remaining == 0) {
126                 private->current = private->current->next;
127                 if (private->current != NULL) {
128                         private->buff = private->current->buff;
129                         private->gap_remaining = private->current->gap_size;
130                 }
131         }
132
133         if (private->current == NULL)
134                 return (0);
135
136         /* If there's real data, return that. */
137         if (private->buff != NULL) {
138                 *buff = private->buff;
139                 size = ((char *)private->current->buff + private->current->size)
140                     - (char *)private->buff;
141                 private->buff = NULL;
142                 private->fileposition += size;
143                 return (size);
144         }
145
146         /* Big gap: too big to return all at once, so just return some. */
147         if (private->gap_remaining > (int64_t)nullsize) {
148                 private->gap_remaining -= nullsize;
149                 *buff = nulldata;
150                 private->fileposition += nullsize;
151                 return (nullsize);
152         }
153
154         /* Small gap: finish the gap and prep for next block. */
155         if (private->gap_remaining > 0) {
156                 size = (ssize_t)private->gap_remaining;
157                 *buff = nulldata;
158                 private->gap_remaining = 0;
159                 private->fileposition += size;
160
161                 private->current = private->current->next;
162                 if (private->current != NULL) {
163                         private->buff = private->current->buff;
164                         private->gap_remaining = private->current->gap_size;
165                 }
166
167                 return (size);
168         }
169         fprintf(stderr, "\n\n\nInternal failure\n\n\n");
170         exit(1);
171 }
172
173 static int
174 memory_read_open(struct archive *a, void *_private)
175 {
176         struct fileblocks *private = _private;
177
178         (void)a; /* UNUSED */
179
180         private->current = private->first;
181         private->fileposition = 0;
182         if (private->current != NULL) {
183                 private->buff = private->current->buff;
184                 private->gap_remaining = private->current->gap_size;
185         }
186         return (ARCHIVE_OK);
187 }
188
189 static int64_t
190 memory_read_seek(struct archive *a, void *_private, int64_t offset, int whence)
191 {
192         struct fileblocks *private = _private;
193
194         (void)a;
195         if (whence == SEEK_END) {
196                 offset = private->filesize + offset;
197         } else if (whence == SEEK_CUR) {
198                 offset = private->fileposition + offset;
199         }
200
201         if (offset < 0) {
202                 fprintf(stderr, "\n\n\nInternal failure: negative seek\n\n\n");
203                 exit(1);
204         }
205
206         /* We've converted the request into a SEEK_SET. */
207         private->fileposition = offset;
208
209         /* Walk the block list to find the new position. */
210         offset = 0;
211         private->current = private->first;
212         while (private->current != NULL) {
213                 if (offset + private->current->size > private->fileposition) {
214                         /* Position is in this block. */
215                         private->buff = (char *)private->current->buff
216                             + private->fileposition - offset;
217                         private->gap_remaining = private->current->gap_size;
218                         return private->fileposition;
219                 }
220                 offset += private->current->size;
221                 if (offset + private->current->gap_size > private->fileposition) {
222                         /* Position is in this gap. */
223                         private->buff = NULL;
224                         private->gap_remaining = private->current->gap_size
225                             - (private->fileposition - offset);
226                         return private->fileposition;
227                 }
228                 offset += private->current->gap_size;
229                 /* Skip to next block. */
230                 private->current = private->current->next;
231         }
232         if (private->fileposition == private->filesize) {
233                 return private->fileposition;
234         }
235         fprintf(stderr, "\n\n\nInternal failure: over-sized seek\n\n\n");
236         exit(1);
237 }
238
239 static int64_t
240 memory_read_skip(struct archive *a, void *_private, int64_t skip)
241 {
242         struct fileblocks *private = _private;
243         int64_t old_position = private->fileposition;
244         int64_t new_position = memory_read_seek(a, _private, skip, SEEK_CUR);
245         return (new_position - old_position);
246 }
247
248 static struct fileblocks *
249 fileblocks_new(void)
250 {
251         struct fileblocks *fileblocks;
252
253         fileblocks = calloc(1, sizeof(struct fileblocks));
254         return fileblocks;
255 }
256
257 static void
258 fileblocks_free(struct fileblocks *fileblocks)
259 {
260         while (fileblocks->first != NULL) {
261                 struct fileblock *b = fileblocks->first;
262                 fileblocks->first = fileblocks->first->next;
263                 free(b->buff);
264                 free(b);
265         }
266         free(fileblocks);
267 }
268
269
270 /* The sizes of the entries we're going to generate. */
271 static int64_t test_sizes[] = {
272         /* Test for 32-bit signed overflow. */
273         2 * GB - 1, 2 * GB, 2 * GB + 1,
274         /* Test for 32-bit unsigned overflow. */
275         4 * GB - 1, 4 * GB, 4 * GB + 1,
276         /* And beyond ... because we can. */
277         16 * GB - 1, 16 * GB, 16 * GB + 1,
278         64 * GB - 1, 64 * GB, 64 * GB + 1,
279         256 * GB - 1, 256 * GB, 256 * GB + 1,
280         1 * TB,
281         0
282 };
283
284
285 static void
286 verify_large_zip(struct archive *a, struct fileblocks *fileblocks)
287 {
288         char namebuff[64];
289         struct archive_entry *ae;
290         int i;
291
292         assertEqualIntA(a, ARCHIVE_OK,
293             archive_read_set_options(a, "zip:ignorecrc32"));
294         assertEqualIntA(a, ARCHIVE_OK,
295             archive_read_set_open_callback(a, memory_read_open));
296         assertEqualIntA(a, ARCHIVE_OK,
297             archive_read_set_read_callback(a, memory_read));
298         assertEqualIntA(a, ARCHIVE_OK,
299             archive_read_set_skip_callback(a, memory_read_skip));
300         assertEqualIntA(a, ARCHIVE_OK,
301             archive_read_set_seek_callback(a, memory_read_seek));
302         assertEqualIntA(a, ARCHIVE_OK,
303             archive_read_set_callback_data(a, fileblocks));
304         assertEqualIntA(a, ARCHIVE_OK, archive_read_open1(a));
305
306         /*
307          * Read entries back.
308          */
309         for (i = 0; test_sizes[i] > 0; i++) {
310                 assertEqualIntA(a, ARCHIVE_OK,
311                     archive_read_next_header(a, &ae));
312                 sprintf(namebuff, "file_%d", i);
313                 assertEqualString(namebuff, archive_entry_pathname(ae));
314                 assertEqualInt(test_sizes[i], archive_entry_size(ae));
315         }
316         assertEqualIntA(a, 0, archive_read_next_header(a, &ae));
317         assertEqualString("lastfile", archive_entry_pathname(ae));
318
319         assertEqualIntA(a, ARCHIVE_EOF, archive_read_next_header(a, &ae));
320
321         /* Close out the archive. */
322         assertEqualIntA(a, ARCHIVE_OK, archive_read_close(a));
323 }
324
325 DEFINE_TEST(test_write_format_zip_large)
326 {
327         int i;
328         char namebuff[64];
329         struct fileblocks *fileblocks = fileblocks_new();
330         struct archive_entry *ae;
331         struct archive *a;
332         const char *p;
333         const char *cd_start, *zip64_eocd, *zip64_locator, *eocd;
334         int64_t cd_size;
335         char *buff;
336         int64_t  filesize;
337         size_t writesize, buffsize, s;
338
339         nullsize = (size_t)(1 * MB);
340         nulldata = malloc(nullsize);
341         memset(nulldata, 0xAA, nullsize);
342
343         /*
344          * Open an archive for writing.
345          */
346         a = archive_write_new();
347         archive_write_set_format_zip(a);
348         assertEqualIntA(a, ARCHIVE_OK,
349             archive_write_set_options(a, "zip:compression=store"));
350         assertEqualIntA(a, ARCHIVE_OK,
351             archive_write_set_options(a, "zip:fakecrc32"));
352         assertEqualIntA(a, ARCHIVE_OK,
353             archive_write_set_bytes_per_block(a, 0)); /* No buffering. */
354         assertEqualIntA(a, ARCHIVE_OK,
355             archive_write_open(a, fileblocks, NULL, memory_write, NULL));
356
357         /*
358          * Write a series of large files to it.
359          */
360         for (i = 0; test_sizes[i] != 0; i++) {
361                 assert((ae = archive_entry_new()) != NULL);
362                 sprintf(namebuff, "file_%d", i);
363                 archive_entry_copy_pathname(ae, namebuff);
364                 archive_entry_set_mode(ae, S_IFREG | 0755);
365                 filesize = test_sizes[i];
366                 archive_entry_set_size(ae, filesize);
367
368                 assertEqualIntA(a, ARCHIVE_OK,
369                     archive_write_header(a, ae));
370                 archive_entry_free(ae);
371
372                 /*
373                  * Write the actual data to the archive.
374                  */
375                 while (filesize > 0) {
376                         writesize = nullsize;
377                         if ((int64_t)writesize > filesize)
378                                 writesize = (size_t)filesize;
379                         assertEqualIntA(a, (int)writesize,
380                             (int)archive_write_data(a, nulldata, writesize));
381                         filesize -= writesize;
382                 }
383         }
384
385         assert((ae = archive_entry_new()) != NULL);
386         archive_entry_copy_pathname(ae, "lastfile");
387         archive_entry_set_mode(ae, S_IFREG | 0755);
388         assertA(0 == archive_write_header(a, ae));
389         archive_entry_free(ae);
390
391         /* Close out the archive. */
392         assertEqualIntA(a, ARCHIVE_OK, archive_write_close(a));
393         assertEqualInt(ARCHIVE_OK, archive_write_free(a));
394
395         /*
396          * Read back with seeking reader:
397          */
398         a = archive_read_new();
399         assertEqualIntA(a, ARCHIVE_OK,
400             archive_read_support_format_zip_seekable(a));
401         verify_large_zip(a, fileblocks);
402         assertEqualInt(ARCHIVE_OK, archive_read_free(a));
403
404         /*
405          * Read back with streaming reader:
406          */
407         a = archive_read_new();
408         assertEqualIntA(a, ARCHIVE_OK,
409             archive_read_support_format_zip_streamable(a));
410         verify_large_zip(a, fileblocks);
411         assertEqualInt(ARCHIVE_OK, archive_read_free(a));
412
413         /*
414          * Manually verify some of the final bytes of the archives.
415          */
416         /* Collect the final bytes together */
417 #define FINAL_SIZE 8192
418         buff = malloc(FINAL_SIZE);
419         buffsize = 0;
420         memory_read_open(NULL, fileblocks);
421         memory_read_seek(NULL, fileblocks, -FINAL_SIZE, SEEK_END);
422         while ((s = memory_read(NULL, fileblocks, (const void **)&p)) > 0) {
423                 memcpy(buff + buffsize, p, s);
424                 buffsize += s;
425         }
426         assertEqualInt(buffsize, FINAL_SIZE);
427
428         p = buff + buffsize;
429
430         /* Verify regular end-of-central-directory record */
431         eocd = p - 22;
432         assertEqualMem(eocd, "PK\005\006\0\0\0\0", 8);
433         assertEqualMem(eocd + 8, "\021\0\021\0", 4); /* 17 entries total */
434         cd_size = le32(eocd + 12);
435         /* Start of CD offset should be 0xffffffff */
436         assertEqualMem(eocd + 16, "\xff\xff\xff\xff", 4);
437         assertEqualMem(eocd + 20, "\0\0", 2);   /* No Zip comment */
438
439         /* Verify Zip64 locator */
440         zip64_locator = p - 42;
441         assertEqualMem(zip64_locator, "PK\006\007\0\0\0\0", 8);
442         zip64_eocd = p - (fileblocks->filesize - le64(zip64_locator + 8));
443         assertEqualMem(zip64_locator + 16, "\001\0\0\0", 4);
444
445         /* Verify Zip64 end-of-cd record. */
446         assert(zip64_eocd == p - 98);
447         assertEqualMem(zip64_eocd, "PK\006\006", 4);
448         assertEqualInt(44, le64(zip64_eocd + 4)); // Size of EoCD record - 12
449         assertEqualMem(zip64_eocd + 12, "\055\0", 2);  // Made by version: 45
450         assertEqualMem(zip64_eocd + 14, "\055\0", 2);  // Requires version: 45
451         assertEqualMem(zip64_eocd + 16, "\0\0\0\0", 4); // This disk
452         assertEqualMem(zip64_eocd + 20, "\0\0\0\0", 4); // Total disks
453         assertEqualInt(17, le64(zip64_eocd + 24));  // Entries on this disk
454         assertEqualInt(17, le64(zip64_eocd + 32));  // Total entries
455         cd_size = le64(zip64_eocd + 40);
456         cd_start = p - (fileblocks->filesize - le64(zip64_eocd + 48));
457
458         assert(cd_start + cd_size == zip64_eocd);
459
460         assertEqualInt(le64(zip64_eocd + 48) // Start of CD
461             + cd_size
462             + 56 // Size of Zip64 EOCD
463             + 20 // Size of Zip64 locator
464             + 22, // Size of EOCD
465             fileblocks->filesize);
466
467         // TODO: Scan entire Central Directory, sanity-check all data
468         assertEqualMem(cd_start, "PK\001\002", 4);
469
470         fileblocks_free(fileblocks);
471         free(buff);
472         free(nulldata);
473 }