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Commit | Line | Data |
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e4fbbfe9 RS |
1 | /* |
2 | * Copyright (c) 2006 Rene Scharfe | |
3 | */ | |
e4fbbfe9 | 4 | #include "cache.h" |
b2141fc1 | 5 | #include "config.h" |
ec06bff5 | 6 | #include "archive.h" |
2158f883 | 7 | #include "streaming.h" |
88182bab | 8 | #include "utf8.h" |
4aff646d RS |
9 | #include "userdiff.h" |
10 | #include "xdiff-interface.h" | |
e4fbbfe9 | 11 | |
e4fbbfe9 RS |
12 | static int zip_date; |
13 | static int zip_time; | |
14 | ||
c061a149 RS |
15 | /* We only care about the "buf" part here. */ |
16 | static struct strbuf zip_dir; | |
e4fbbfe9 | 17 | |
af95749f | 18 | static uintmax_t zip_offset; |
88329ca8 RS |
19 | static uint64_t zip_dir_entries; |
20 | ||
21 | static unsigned int max_creator_version; | |
e4fbbfe9 | 22 | |
88182bab RS |
23 | #define ZIP_STREAM (1 << 3) |
24 | #define ZIP_UTF8 (1 << 11) | |
e4fbbfe9 RS |
25 | |
26 | struct zip_local_header { | |
27 | unsigned char magic[4]; | |
28 | unsigned char version[2]; | |
29 | unsigned char flags[2]; | |
30 | unsigned char compression_method[2]; | |
31 | unsigned char mtime[2]; | |
32 | unsigned char mdate[2]; | |
33 | unsigned char crc32[4]; | |
34 | unsigned char compressed_size[4]; | |
35 | unsigned char size[4]; | |
36 | unsigned char filename_length[2]; | |
37 | unsigned char extra_length[2]; | |
0ea865ce | 38 | unsigned char _end[1]; |
e4fbbfe9 RS |
39 | }; |
40 | ||
2158f883 RS |
41 | struct zip_data_desc { |
42 | unsigned char magic[4]; | |
43 | unsigned char crc32[4]; | |
44 | unsigned char compressed_size[4]; | |
45 | unsigned char size[4]; | |
46 | unsigned char _end[1]; | |
47 | }; | |
48 | ||
4cdf3f9d RS |
49 | struct zip64_data_desc { |
50 | unsigned char magic[4]; | |
51 | unsigned char crc32[4]; | |
52 | unsigned char compressed_size[8]; | |
53 | unsigned char size[8]; | |
54 | unsigned char _end[1]; | |
55 | }; | |
56 | ||
e4fbbfe9 RS |
57 | struct zip_dir_trailer { |
58 | unsigned char magic[4]; | |
59 | unsigned char disk[2]; | |
60 | unsigned char directory_start_disk[2]; | |
61 | unsigned char entries_on_this_disk[2]; | |
62 | unsigned char entries[2]; | |
63 | unsigned char size[4]; | |
64 | unsigned char offset[4]; | |
65 | unsigned char comment_length[2]; | |
0ea865ce | 66 | unsigned char _end[1]; |
e4fbbfe9 RS |
67 | }; |
68 | ||
227bf598 RS |
69 | struct zip_extra_mtime { |
70 | unsigned char magic[2]; | |
71 | unsigned char extra_size[2]; | |
72 | unsigned char flags[1]; | |
73 | unsigned char mtime[4]; | |
74 | unsigned char _end[1]; | |
75 | }; | |
76 | ||
4cdf3f9d RS |
77 | struct zip64_extra { |
78 | unsigned char magic[2]; | |
79 | unsigned char extra_size[2]; | |
80 | unsigned char size[8]; | |
81 | unsigned char compressed_size[8]; | |
82 | unsigned char _end[1]; | |
83 | }; | |
84 | ||
88329ca8 RS |
85 | struct zip64_dir_trailer { |
86 | unsigned char magic[4]; | |
87 | unsigned char record_size[8]; | |
88 | unsigned char creator_version[2]; | |
89 | unsigned char version[2]; | |
90 | unsigned char disk[4]; | |
91 | unsigned char directory_start_disk[4]; | |
92 | unsigned char entries_on_this_disk[8]; | |
93 | unsigned char entries[8]; | |
94 | unsigned char size[8]; | |
95 | unsigned char offset[8]; | |
96 | unsigned char _end[1]; | |
97 | }; | |
98 | ||
99 | struct zip64_dir_trailer_locator { | |
100 | unsigned char magic[4]; | |
101 | unsigned char disk[4]; | |
102 | unsigned char offset[8]; | |
103 | unsigned char number_of_disks[4]; | |
104 | unsigned char _end[1]; | |
105 | }; | |
106 | ||
0ea865ce RS |
107 | /* |
108 | * On ARM, padding is added at the end of the struct, so a simple | |
109 | * sizeof(struct ...) reports two bytes more than the payload size | |
110 | * we're interested in. | |
111 | */ | |
112 | #define ZIP_LOCAL_HEADER_SIZE offsetof(struct zip_local_header, _end) | |
2158f883 | 113 | #define ZIP_DATA_DESC_SIZE offsetof(struct zip_data_desc, _end) |
4cdf3f9d | 114 | #define ZIP64_DATA_DESC_SIZE offsetof(struct zip64_data_desc, _end) |
0ea865ce RS |
115 | #define ZIP_DIR_HEADER_SIZE offsetof(struct zip_dir_header, _end) |
116 | #define ZIP_DIR_TRAILER_SIZE offsetof(struct zip_dir_trailer, _end) | |
227bf598 RS |
117 | #define ZIP_EXTRA_MTIME_SIZE offsetof(struct zip_extra_mtime, _end) |
118 | #define ZIP_EXTRA_MTIME_PAYLOAD_SIZE \ | |
119 | (ZIP_EXTRA_MTIME_SIZE - offsetof(struct zip_extra_mtime, flags)) | |
4cdf3f9d RS |
120 | #define ZIP64_EXTRA_SIZE offsetof(struct zip64_extra, _end) |
121 | #define ZIP64_EXTRA_PAYLOAD_SIZE \ | |
122 | (ZIP64_EXTRA_SIZE - offsetof(struct zip64_extra, size)) | |
88329ca8 RS |
123 | #define ZIP64_DIR_TRAILER_SIZE offsetof(struct zip64_dir_trailer, _end) |
124 | #define ZIP64_DIR_TRAILER_RECORD_SIZE \ | |
125 | (ZIP64_DIR_TRAILER_SIZE - \ | |
126 | offsetof(struct zip64_dir_trailer, creator_version)) | |
127 | #define ZIP64_DIR_TRAILER_LOCATOR_SIZE \ | |
128 | offsetof(struct zip64_dir_trailer_locator, _end) | |
0ea865ce | 129 | |
e4fbbfe9 RS |
130 | static void copy_le16(unsigned char *dest, unsigned int n) |
131 | { | |
132 | dest[0] = 0xff & n; | |
133 | dest[1] = 0xff & (n >> 010); | |
134 | } | |
135 | ||
136 | static void copy_le32(unsigned char *dest, unsigned int n) | |
137 | { | |
138 | dest[0] = 0xff & n; | |
139 | dest[1] = 0xff & (n >> 010); | |
140 | dest[2] = 0xff & (n >> 020); | |
141 | dest[3] = 0xff & (n >> 030); | |
142 | } | |
143 | ||
88329ca8 RS |
144 | static void copy_le64(unsigned char *dest, uint64_t n) |
145 | { | |
146 | dest[0] = 0xff & n; | |
147 | dest[1] = 0xff & (n >> 010); | |
148 | dest[2] = 0xff & (n >> 020); | |
149 | dest[3] = 0xff & (n >> 030); | |
150 | dest[4] = 0xff & (n >> 040); | |
151 | dest[5] = 0xff & (n >> 050); | |
152 | dest[6] = 0xff & (n >> 060); | |
153 | dest[7] = 0xff & (n >> 070); | |
154 | } | |
155 | ||
156 | static uint64_t clamp_max(uint64_t n, uint64_t max, int *clamped) | |
157 | { | |
158 | if (n <= max) | |
159 | return n; | |
160 | *clamped = 1; | |
161 | return max; | |
162 | } | |
163 | ||
164 | static void copy_le16_clamp(unsigned char *dest, uint64_t n, int *clamped) | |
165 | { | |
166 | copy_le16(dest, clamp_max(n, 0xffff, clamped)); | |
167 | } | |
168 | ||
af95749f RS |
169 | static void copy_le32_clamp(unsigned char *dest, uint64_t n, int *clamped) |
170 | { | |
171 | copy_le32(dest, clamp_max(n, 0xffffffff, clamped)); | |
172 | } | |
173 | ||
3c78fd80 RS |
174 | static int strbuf_add_le(struct strbuf *sb, size_t size, uintmax_t n) |
175 | { | |
176 | while (size-- > 0) { | |
177 | strbuf_addch(sb, n & 0xff); | |
178 | n >>= 8; | |
179 | } | |
180 | return -!!n; | |
181 | } | |
182 | ||
af95749f RS |
183 | static uint32_t clamp32(uintmax_t n) |
184 | { | |
185 | const uintmax_t max = 0xffffffff; | |
186 | return (n < max) ? n : max; | |
187 | } | |
188 | ||
c3c2e1a0 RS |
189 | static void *zlib_deflate_raw(void *data, unsigned long size, |
190 | int compression_level, | |
191 | unsigned long *compressed_size) | |
e4fbbfe9 | 192 | { |
ef49a7a0 | 193 | git_zstream stream; |
e4fbbfe9 RS |
194 | unsigned long maxsize; |
195 | void *buffer; | |
196 | int result; | |
197 | ||
c3c2e1a0 | 198 | git_deflate_init_raw(&stream, compression_level); |
225a6f10 | 199 | maxsize = git_deflate_bound(&stream, size); |
e4fbbfe9 RS |
200 | buffer = xmalloc(maxsize); |
201 | ||
202 | stream.next_in = data; | |
203 | stream.avail_in = size; | |
204 | stream.next_out = buffer; | |
205 | stream.avail_out = maxsize; | |
206 | ||
207 | do { | |
55bb5c91 | 208 | result = git_deflate(&stream, Z_FINISH); |
e4fbbfe9 RS |
209 | } while (result == Z_OK); |
210 | ||
211 | if (result != Z_STREAM_END) { | |
212 | free(buffer); | |
213 | return NULL; | |
214 | } | |
215 | ||
55bb5c91 | 216 | git_deflate_end(&stream); |
e4fbbfe9 RS |
217 | *compressed_size = stream.total_out; |
218 | ||
219 | return buffer; | |
220 | } | |
221 | ||
2158f883 RS |
222 | static void write_zip_data_desc(unsigned long size, |
223 | unsigned long compressed_size, | |
224 | unsigned long crc) | |
225 | { | |
4cdf3f9d RS |
226 | if (size >= 0xffffffff || compressed_size >= 0xffffffff) { |
227 | struct zip64_data_desc trailer; | |
228 | copy_le32(trailer.magic, 0x08074b50); | |
229 | copy_le32(trailer.crc32, crc); | |
230 | copy_le64(trailer.compressed_size, compressed_size); | |
231 | copy_le64(trailer.size, size); | |
232 | write_or_die(1, &trailer, ZIP64_DATA_DESC_SIZE); | |
233 | zip_offset += ZIP64_DATA_DESC_SIZE; | |
234 | } else { | |
235 | struct zip_data_desc trailer; | |
236 | copy_le32(trailer.magic, 0x08074b50); | |
237 | copy_le32(trailer.crc32, crc); | |
238 | copy_le32(trailer.compressed_size, compressed_size); | |
239 | copy_le32(trailer.size, size); | |
240 | write_or_die(1, &trailer, ZIP_DATA_DESC_SIZE); | |
241 | zip_offset += ZIP_DATA_DESC_SIZE; | |
242 | } | |
2158f883 RS |
243 | } |
244 | ||
ebf5374a RS |
245 | static void set_zip_header_data_desc(struct zip_local_header *header, |
246 | unsigned long size, | |
247 | unsigned long compressed_size, | |
248 | unsigned long crc) | |
249 | { | |
250 | copy_le32(header->crc32, crc); | |
251 | copy_le32(header->compressed_size, compressed_size); | |
252 | copy_le32(header->size, size); | |
253 | } | |
254 | ||
88182bab RS |
255 | static int has_only_ascii(const char *s) |
256 | { | |
257 | for (;;) { | |
258 | int c = *s++; | |
259 | if (c == '\0') | |
260 | return 1; | |
261 | if (!isascii(c)) | |
262 | return 0; | |
263 | } | |
264 | } | |
265 | ||
4aff646d RS |
266 | static int entry_is_binary(const char *path, const void *buffer, size_t size) |
267 | { | |
268 | struct userdiff_driver *driver = userdiff_find_by_path(path); | |
269 | if (!driver) | |
270 | driver = userdiff_find_by_name("default"); | |
271 | if (driver->binary != -1) | |
272 | return driver->binary; | |
273 | return buffer_is_binary(buffer, size); | |
274 | } | |
275 | ||
2158f883 RS |
276 | #define STREAM_BUFFER_SIZE (1024 * 16) |
277 | ||
562e25ab | 278 | static int write_zip_entry(struct archiver_args *args, |
015ff4f8 | 279 | const struct object_id *oid, |
9cb513b7 NTND |
280 | const char *path, size_t pathlen, |
281 | unsigned int mode) | |
e4fbbfe9 RS |
282 | { |
283 | struct zip_local_header header; | |
3c78fd80 | 284 | uintmax_t offset = zip_offset; |
227bf598 | 285 | struct zip_extra_mtime extra; |
4cdf3f9d RS |
286 | struct zip64_extra extra64; |
287 | size_t header_extra_size = ZIP_EXTRA_MTIME_SIZE; | |
288 | int need_zip64_extra = 0; | |
bb52d22e | 289 | unsigned long attr2; |
e4fbbfe9 | 290 | unsigned long compressed_size; |
e4fbbfe9 | 291 | unsigned long crc; |
e4fbbfe9 | 292 | int method; |
e4fbbfe9 | 293 | unsigned char *out; |
e4fbbfe9 | 294 | void *deflated = NULL; |
9cb513b7 | 295 | void *buffer; |
2158f883 RS |
296 | struct git_istream *stream = NULL; |
297 | unsigned long flags = 0; | |
9cb513b7 | 298 | unsigned long size; |
4aff646d RS |
299 | int is_binary = -1; |
300 | const char *path_without_prefix = path + args->baselen; | |
0f747f9d | 301 | unsigned int creator_version = 0; |
ebdfa294 | 302 | unsigned int version_needed = 10; |
af95749f RS |
303 | size_t zip_dir_extra_size = ZIP_EXTRA_MTIME_SIZE; |
304 | size_t zip64_dir_extra_payload_size = 0; | |
e4fbbfe9 | 305 | |
38f4d138 | 306 | crc = crc32(0, NULL, 0); |
e4fbbfe9 | 307 | |
88182bab RS |
308 | if (!has_only_ascii(path)) { |
309 | if (is_utf8(path)) | |
310 | flags |= ZIP_UTF8; | |
311 | else | |
312 | warning("Path is not valid UTF-8: %s", path); | |
313 | } | |
314 | ||
e4fbbfe9 | 315 | if (pathlen > 0xffff) { |
562e25ab | 316 | return error("path too long (%d chars, SHA1: %s): %s", |
015ff4f8 | 317 | (int)pathlen, oid_to_hex(oid), path); |
e4fbbfe9 RS |
318 | } |
319 | ||
302b9282 | 320 | if (S_ISDIR(mode) || S_ISGITLINK(mode)) { |
e4fbbfe9 | 321 | method = 0; |
62cdce17 | 322 | attr2 = 16; |
e4fbbfe9 | 323 | out = NULL; |
60df6bd1 | 324 | size = 0; |
e4fbbfe9 | 325 | compressed_size = 0; |
9cb513b7 | 326 | buffer = NULL; |
62cdce17 | 327 | } else if (S_ISREG(mode) || S_ISLNK(mode)) { |
0df8e965 SB |
328 | enum object_type type = oid_object_info(the_repository, oid, |
329 | &size); | |
9cb513b7 | 330 | |
62cdce17 | 331 | method = 0; |
bb52d22e JH |
332 | attr2 = S_ISLNK(mode) ? ((mode | 0777) << 16) : |
333 | (mode & 0111) ? ((mode) << 16) : 0; | |
0f747f9d RS |
334 | if (S_ISLNK(mode) || (mode & 0111)) |
335 | creator_version = 0x0317; | |
2158f883 | 336 | if (S_ISREG(mode) && args->compression_level != 0 && size > 0) |
62cdce17 | 337 | method = 8; |
2158f883 RS |
338 | |
339 | if (S_ISREG(mode) && type == OBJ_BLOB && !args->convert && | |
c743c215 | 340 | size > big_file_threshold) { |
ef7b5195 | 341 | stream = open_istream(oid, &type, &size, NULL); |
2158f883 RS |
342 | if (!stream) |
343 | return error("cannot stream blob %s", | |
015ff4f8 | 344 | oid_to_hex(oid)); |
2158f883 RS |
345 | flags |= ZIP_STREAM; |
346 | out = buffer = NULL; | |
347 | } else { | |
e5ec981a | 348 | buffer = object_file_to_archive(args, path, oid, mode, |
349 | &type, &size); | |
2158f883 RS |
350 | if (!buffer) |
351 | return error("cannot read %s", | |
015ff4f8 | 352 | oid_to_hex(oid)); |
2158f883 | 353 | crc = crc32(crc, buffer, size); |
4aff646d RS |
354 | is_binary = entry_is_binary(path_without_prefix, |
355 | buffer, size); | |
2158f883 RS |
356 | out = buffer; |
357 | } | |
d3c1472f | 358 | compressed_size = (method == 0) ? size : 0; |
e4fbbfe9 | 359 | } else { |
562e25ab | 360 | return error("unsupported file mode: 0%o (SHA1: %s)", mode, |
015ff4f8 | 361 | oid_to_hex(oid)); |
e4fbbfe9 RS |
362 | } |
363 | ||
88329ca8 RS |
364 | if (creator_version > max_creator_version) |
365 | max_creator_version = creator_version; | |
366 | ||
2158f883 | 367 | if (buffer && method == 8) { |
c3c2e1a0 RS |
368 | out = deflated = zlib_deflate_raw(buffer, size, |
369 | args->compression_level, | |
370 | &compressed_size); | |
371 | if (!out || compressed_size >= size) { | |
372 | out = buffer; | |
e4fbbfe9 RS |
373 | method = 0; |
374 | compressed_size = size; | |
375 | } | |
376 | } | |
377 | ||
227bf598 RS |
378 | copy_le16(extra.magic, 0x5455); |
379 | copy_le16(extra.extra_size, ZIP_EXTRA_MTIME_PAYLOAD_SIZE); | |
380 | extra.flags[0] = 1; /* just mtime */ | |
381 | copy_le32(extra.mtime, args->time); | |
382 | ||
4cdf3f9d RS |
383 | if (size > 0xffffffff || compressed_size > 0xffffffff) |
384 | need_zip64_extra = 1; | |
385 | if (stream && size > 0x7fffffff) | |
386 | need_zip64_extra = 1; | |
387 | ||
ebdfa294 RS |
388 | if (need_zip64_extra) |
389 | version_needed = 45; | |
390 | ||
e4fbbfe9 | 391 | copy_le32(header.magic, 0x04034b50); |
ebdfa294 | 392 | copy_le16(header.version, version_needed); |
2158f883 | 393 | copy_le16(header.flags, flags); |
e4fbbfe9 RS |
394 | copy_le16(header.compression_method, method); |
395 | copy_le16(header.mtime, zip_time); | |
396 | copy_le16(header.mdate, zip_date); | |
4cdf3f9d RS |
397 | if (need_zip64_extra) { |
398 | set_zip_header_data_desc(&header, 0xffffffff, 0xffffffff, crc); | |
399 | header_extra_size += ZIP64_EXTRA_SIZE; | |
400 | } else { | |
401 | set_zip_header_data_desc(&header, size, compressed_size, crc); | |
402 | } | |
e4fbbfe9 | 403 | copy_le16(header.filename_length, pathlen); |
4cdf3f9d | 404 | copy_le16(header.extra_length, header_extra_size); |
0ea865ce RS |
405 | write_or_die(1, &header, ZIP_LOCAL_HEADER_SIZE); |
406 | zip_offset += ZIP_LOCAL_HEADER_SIZE; | |
e4fbbfe9 RS |
407 | write_or_die(1, path, pathlen); |
408 | zip_offset += pathlen; | |
227bf598 RS |
409 | write_or_die(1, &extra, ZIP_EXTRA_MTIME_SIZE); |
410 | zip_offset += ZIP_EXTRA_MTIME_SIZE; | |
4cdf3f9d RS |
411 | if (need_zip64_extra) { |
412 | copy_le16(extra64.magic, 0x0001); | |
413 | copy_le16(extra64.extra_size, ZIP64_EXTRA_PAYLOAD_SIZE); | |
414 | copy_le64(extra64.size, size); | |
415 | copy_le64(extra64.compressed_size, compressed_size); | |
416 | write_or_die(1, &extra64, ZIP64_EXTRA_SIZE); | |
417 | zip_offset += ZIP64_EXTRA_SIZE; | |
418 | } | |
419 | ||
2158f883 RS |
420 | if (stream && method == 0) { |
421 | unsigned char buf[STREAM_BUFFER_SIZE]; | |
422 | ssize_t readlen; | |
423 | ||
424 | for (;;) { | |
425 | readlen = read_istream(stream, buf, sizeof(buf)); | |
426 | if (readlen <= 0) | |
427 | break; | |
428 | crc = crc32(crc, buf, readlen); | |
4aff646d RS |
429 | if (is_binary == -1) |
430 | is_binary = entry_is_binary(path_without_prefix, | |
431 | buf, readlen); | |
2158f883 RS |
432 | write_or_die(1, buf, readlen); |
433 | } | |
434 | close_istream(stream); | |
435 | if (readlen) | |
436 | return readlen; | |
437 | ||
438 | compressed_size = size; | |
439 | zip_offset += compressed_size; | |
440 | ||
441 | write_zip_data_desc(size, compressed_size, crc); | |
c743c215 RS |
442 | } else if (stream && method == 8) { |
443 | unsigned char buf[STREAM_BUFFER_SIZE]; | |
444 | ssize_t readlen; | |
445 | git_zstream zstream; | |
446 | int result; | |
447 | size_t out_len; | |
448 | unsigned char compressed[STREAM_BUFFER_SIZE * 2]; | |
449 | ||
c3c2e1a0 | 450 | git_deflate_init_raw(&zstream, args->compression_level); |
c743c215 RS |
451 | |
452 | compressed_size = 0; | |
453 | zstream.next_out = compressed; | |
454 | zstream.avail_out = sizeof(compressed); | |
455 | ||
456 | for (;;) { | |
457 | readlen = read_istream(stream, buf, sizeof(buf)); | |
458 | if (readlen <= 0) | |
459 | break; | |
460 | crc = crc32(crc, buf, readlen); | |
4aff646d RS |
461 | if (is_binary == -1) |
462 | is_binary = entry_is_binary(path_without_prefix, | |
463 | buf, readlen); | |
c743c215 RS |
464 | |
465 | zstream.next_in = buf; | |
466 | zstream.avail_in = readlen; | |
467 | result = git_deflate(&zstream, 0); | |
468 | if (result != Z_OK) | |
469 | die("deflate error (%d)", result); | |
c3c2e1a0 | 470 | out_len = zstream.next_out - compressed; |
c743c215 RS |
471 | |
472 | if (out_len > 0) { | |
c3c2e1a0 | 473 | write_or_die(1, compressed, out_len); |
c743c215 RS |
474 | compressed_size += out_len; |
475 | zstream.next_out = compressed; | |
476 | zstream.avail_out = sizeof(compressed); | |
477 | } | |
478 | ||
479 | } | |
480 | close_istream(stream); | |
481 | if (readlen) | |
482 | return readlen; | |
483 | ||
484 | zstream.next_in = buf; | |
485 | zstream.avail_in = 0; | |
486 | result = git_deflate(&zstream, Z_FINISH); | |
487 | if (result != Z_STREAM_END) | |
488 | die("deflate error (%d)", result); | |
489 | ||
490 | git_deflate_end(&zstream); | |
c3c2e1a0 RS |
491 | out_len = zstream.next_out - compressed; |
492 | write_or_die(1, compressed, out_len); | |
c743c215 RS |
493 | compressed_size += out_len; |
494 | zip_offset += compressed_size; | |
495 | ||
496 | write_zip_data_desc(size, compressed_size, crc); | |
2158f883 | 497 | } else if (compressed_size > 0) { |
e4fbbfe9 RS |
498 | write_or_die(1, out, compressed_size); |
499 | zip_offset += compressed_size; | |
500 | } | |
501 | ||
e4fbbfe9 | 502 | free(deflated); |
9cb513b7 | 503 | free(buffer); |
e4fbbfe9 | 504 | |
4cdf3f9d RS |
505 | if (compressed_size > 0xffffffff || size > 0xffffffff || |
506 | offset > 0xffffffff) { | |
507 | if (compressed_size >= 0xffffffff) | |
508 | zip64_dir_extra_payload_size += 8; | |
509 | if (size >= 0xffffffff) | |
510 | zip64_dir_extra_payload_size += 8; | |
511 | if (offset >= 0xffffffff) | |
512 | zip64_dir_extra_payload_size += 8; | |
af95749f RS |
513 | zip_dir_extra_size += 2 + 2 + zip64_dir_extra_payload_size; |
514 | } | |
515 | ||
3c78fd80 RS |
516 | strbuf_add_le(&zip_dir, 4, 0x02014b50); /* magic */ |
517 | strbuf_add_le(&zip_dir, 2, creator_version); | |
ebdfa294 | 518 | strbuf_add_le(&zip_dir, 2, version_needed); |
3c78fd80 RS |
519 | strbuf_add_le(&zip_dir, 2, flags); |
520 | strbuf_add_le(&zip_dir, 2, method); | |
521 | strbuf_add_le(&zip_dir, 2, zip_time); | |
522 | strbuf_add_le(&zip_dir, 2, zip_date); | |
523 | strbuf_add_le(&zip_dir, 4, crc); | |
4cdf3f9d RS |
524 | strbuf_add_le(&zip_dir, 4, clamp32(compressed_size)); |
525 | strbuf_add_le(&zip_dir, 4, clamp32(size)); | |
3c78fd80 | 526 | strbuf_add_le(&zip_dir, 2, pathlen); |
af95749f | 527 | strbuf_add_le(&zip_dir, 2, zip_dir_extra_size); |
3c78fd80 RS |
528 | strbuf_add_le(&zip_dir, 2, 0); /* comment length */ |
529 | strbuf_add_le(&zip_dir, 2, 0); /* disk */ | |
530 | strbuf_add_le(&zip_dir, 2, !is_binary); | |
531 | strbuf_add_le(&zip_dir, 4, attr2); | |
af95749f | 532 | strbuf_add_le(&zip_dir, 4, clamp32(offset)); |
c061a149 RS |
533 | strbuf_add(&zip_dir, path, pathlen); |
534 | strbuf_add(&zip_dir, &extra, ZIP_EXTRA_MTIME_SIZE); | |
af95749f RS |
535 | if (zip64_dir_extra_payload_size) { |
536 | strbuf_add_le(&zip_dir, 2, 0x0001); /* magic */ | |
537 | strbuf_add_le(&zip_dir, 2, zip64_dir_extra_payload_size); | |
4cdf3f9d RS |
538 | if (size >= 0xffffffff) |
539 | strbuf_add_le(&zip_dir, 8, size); | |
540 | if (compressed_size >= 0xffffffff) | |
541 | strbuf_add_le(&zip_dir, 8, compressed_size); | |
af95749f RS |
542 | if (offset >= 0xffffffff) |
543 | strbuf_add_le(&zip_dir, 8, offset); | |
544 | } | |
ebf5374a RS |
545 | zip_dir_entries++; |
546 | ||
562e25ab | 547 | return 0; |
e4fbbfe9 RS |
548 | } |
549 | ||
88329ca8 RS |
550 | static void write_zip64_trailer(void) |
551 | { | |
552 | struct zip64_dir_trailer trailer64; | |
553 | struct zip64_dir_trailer_locator locator64; | |
554 | ||
555 | copy_le32(trailer64.magic, 0x06064b50); | |
556 | copy_le64(trailer64.record_size, ZIP64_DIR_TRAILER_RECORD_SIZE); | |
557 | copy_le16(trailer64.creator_version, max_creator_version); | |
558 | copy_le16(trailer64.version, 45); | |
559 | copy_le32(trailer64.disk, 0); | |
560 | copy_le32(trailer64.directory_start_disk, 0); | |
561 | copy_le64(trailer64.entries_on_this_disk, zip_dir_entries); | |
562 | copy_le64(trailer64.entries, zip_dir_entries); | |
c061a149 | 563 | copy_le64(trailer64.size, zip_dir.len); |
88329ca8 RS |
564 | copy_le64(trailer64.offset, zip_offset); |
565 | ||
566 | copy_le32(locator64.magic, 0x07064b50); | |
567 | copy_le32(locator64.disk, 0); | |
c061a149 | 568 | copy_le64(locator64.offset, zip_offset + zip_dir.len); |
88329ca8 RS |
569 | copy_le32(locator64.number_of_disks, 1); |
570 | ||
571 | write_or_die(1, &trailer64, ZIP64_DIR_TRAILER_SIZE); | |
572 | write_or_die(1, &locator64, ZIP64_DIR_TRAILER_LOCATOR_SIZE); | |
573 | } | |
574 | ||
e4fbbfe9 RS |
575 | static void write_zip_trailer(const unsigned char *sha1) |
576 | { | |
577 | struct zip_dir_trailer trailer; | |
88329ca8 | 578 | int clamped = 0; |
e4fbbfe9 RS |
579 | |
580 | copy_le32(trailer.magic, 0x06054b50); | |
581 | copy_le16(trailer.disk, 0); | |
582 | copy_le16(trailer.directory_start_disk, 0); | |
88329ca8 RS |
583 | copy_le16_clamp(trailer.entries_on_this_disk, zip_dir_entries, |
584 | &clamped); | |
585 | copy_le16_clamp(trailer.entries, zip_dir_entries, &clamped); | |
c061a149 | 586 | copy_le32(trailer.size, zip_dir.len); |
af95749f | 587 | copy_le32_clamp(trailer.offset, zip_offset, &clamped); |
aeecdcd4 | 588 | copy_le16(trailer.comment_length, sha1 ? GIT_SHA1_HEXSZ : 0); |
e4fbbfe9 | 589 | |
c061a149 | 590 | write_or_die(1, zip_dir.buf, zip_dir.len); |
88329ca8 RS |
591 | if (clamped) |
592 | write_zip64_trailer(); | |
0ea865ce | 593 | write_or_die(1, &trailer, ZIP_DIR_TRAILER_SIZE); |
e4fbbfe9 | 594 | if (sha1) |
aeecdcd4 | 595 | write_or_die(1, sha1_to_hex(sha1), GIT_SHA1_HEXSZ); |
e4fbbfe9 RS |
596 | } |
597 | ||
dddbad72 | 598 | static void dos_time(timestamp_t *timestamp, int *dos_date, int *dos_time) |
e4fbbfe9 | 599 | { |
dddbad72 JS |
600 | time_t time; |
601 | struct tm *t; | |
602 | ||
603 | if (date_overflows(*timestamp)) | |
604 | die("timestamp too large for this system: %"PRItime, | |
605 | *timestamp); | |
606 | time = (time_t)*timestamp; | |
607 | t = localtime(&time); | |
608 | *timestamp = time; | |
e4fbbfe9 RS |
609 | |
610 | *dos_date = t->tm_mday + (t->tm_mon + 1) * 32 + | |
611 | (t->tm_year + 1900 - 1980) * 512; | |
612 | *dos_time = t->tm_sec / 2 + t->tm_min * 32 + t->tm_hour * 2048; | |
613 | } | |
614 | ||
965cba2e JK |
615 | static int archive_zip_config(const char *var, const char *value, void *data) |
616 | { | |
617 | return userdiff_config(var, value); | |
618 | } | |
619 | ||
4d7c9898 JK |
620 | static int write_zip_archive(const struct archiver *ar, |
621 | struct archiver_args *args) | |
ec06bff5 | 622 | { |
562e25ab RS |
623 | int err; |
624 | ||
965cba2e JK |
625 | git_config(archive_zip_config, NULL); |
626 | ||
ec06bff5 FBH |
627 | dos_time(&args->time, &zip_date, &zip_time); |
628 | ||
c061a149 | 629 | strbuf_init(&zip_dir, 0); |
562e25ab RS |
630 | |
631 | err = write_archive_entries(args, write_zip_entry); | |
632 | if (!err) | |
633 | write_zip_trailer(args->commit_sha1); | |
ec06bff5 | 634 | |
c061a149 | 635 | strbuf_release(&zip_dir); |
ec06bff5 | 636 | |
562e25ab | 637 | return err; |
ec06bff5 | 638 | } |
13e0f88d JK |
639 | |
640 | static struct archiver zip_archiver = { | |
641 | "zip", | |
642 | write_zip_archive, | |
7b97730b | 643 | ARCHIVER_WANT_COMPRESSION_LEVELS|ARCHIVER_REMOTE |
13e0f88d JK |
644 | }; |
645 | ||
646 | void init_zip_archiver(void) | |
647 | { | |
648 | register_archiver(&zip_archiver); | |
649 | } |