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Commit | Line | Data |
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e4fbbfe9 RS |
1 | /* |
2 | * Copyright (c) 2006 Rene Scharfe | |
3 | */ | |
5e3f94df | 4 | #include "git-compat-util.h" |
b2141fc1 | 5 | #include "config.h" |
ec06bff5 | 6 | #include "archive.h" |
f394e093 | 7 | #include "gettext.h" |
d88dbaa7 | 8 | #include "git-zlib.h" |
41771fa4 | 9 | #include "hex.h" |
2158f883 | 10 | #include "streaming.h" |
88182bab | 11 | #include "utf8.h" |
a034e910 | 12 | #include "object-store-ll.h" |
c2c4138c | 13 | #include "strbuf.h" |
4aff646d | 14 | #include "userdiff.h" |
d48be35c | 15 | #include "write-or-die.h" |
4aff646d | 16 | #include "xdiff-interface.h" |
88c7b4c3 | 17 | #include "date.h" |
e4fbbfe9 | 18 | |
e4fbbfe9 RS |
19 | static int zip_date; |
20 | static int zip_time; | |
21 | ||
c061a149 RS |
22 | /* We only care about the "buf" part here. */ |
23 | static struct strbuf zip_dir; | |
e4fbbfe9 | 24 | |
af95749f | 25 | static uintmax_t zip_offset; |
88329ca8 RS |
26 | static uint64_t zip_dir_entries; |
27 | ||
28 | static unsigned int max_creator_version; | |
e4fbbfe9 | 29 | |
88182bab RS |
30 | #define ZIP_STREAM (1 << 3) |
31 | #define ZIP_UTF8 (1 << 11) | |
e4fbbfe9 | 32 | |
e05e8cf0 RS |
33 | enum zip_method { |
34 | ZIP_METHOD_STORE = 0, | |
35 | ZIP_METHOD_DEFLATE = 8 | |
36 | }; | |
37 | ||
e4fbbfe9 RS |
38 | struct zip_local_header { |
39 | unsigned char magic[4]; | |
40 | unsigned char version[2]; | |
41 | unsigned char flags[2]; | |
42 | unsigned char compression_method[2]; | |
43 | unsigned char mtime[2]; | |
44 | unsigned char mdate[2]; | |
45 | unsigned char crc32[4]; | |
46 | unsigned char compressed_size[4]; | |
47 | unsigned char size[4]; | |
48 | unsigned char filename_length[2]; | |
49 | unsigned char extra_length[2]; | |
0ea865ce | 50 | unsigned char _end[1]; |
e4fbbfe9 RS |
51 | }; |
52 | ||
2158f883 RS |
53 | struct zip_data_desc { |
54 | unsigned char magic[4]; | |
55 | unsigned char crc32[4]; | |
56 | unsigned char compressed_size[4]; | |
57 | unsigned char size[4]; | |
58 | unsigned char _end[1]; | |
59 | }; | |
60 | ||
4cdf3f9d RS |
61 | struct zip64_data_desc { |
62 | unsigned char magic[4]; | |
63 | unsigned char crc32[4]; | |
64 | unsigned char compressed_size[8]; | |
65 | unsigned char size[8]; | |
66 | unsigned char _end[1]; | |
67 | }; | |
68 | ||
e4fbbfe9 RS |
69 | struct zip_dir_trailer { |
70 | unsigned char magic[4]; | |
71 | unsigned char disk[2]; | |
72 | unsigned char directory_start_disk[2]; | |
73 | unsigned char entries_on_this_disk[2]; | |
74 | unsigned char entries[2]; | |
75 | unsigned char size[4]; | |
76 | unsigned char offset[4]; | |
77 | unsigned char comment_length[2]; | |
0ea865ce | 78 | unsigned char _end[1]; |
e4fbbfe9 RS |
79 | }; |
80 | ||
227bf598 RS |
81 | struct zip_extra_mtime { |
82 | unsigned char magic[2]; | |
83 | unsigned char extra_size[2]; | |
84 | unsigned char flags[1]; | |
85 | unsigned char mtime[4]; | |
86 | unsigned char _end[1]; | |
87 | }; | |
88 | ||
4cdf3f9d RS |
89 | struct zip64_extra { |
90 | unsigned char magic[2]; | |
91 | unsigned char extra_size[2]; | |
92 | unsigned char size[8]; | |
93 | unsigned char compressed_size[8]; | |
94 | unsigned char _end[1]; | |
95 | }; | |
96 | ||
88329ca8 RS |
97 | struct zip64_dir_trailer { |
98 | unsigned char magic[4]; | |
99 | unsigned char record_size[8]; | |
100 | unsigned char creator_version[2]; | |
101 | unsigned char version[2]; | |
102 | unsigned char disk[4]; | |
103 | unsigned char directory_start_disk[4]; | |
104 | unsigned char entries_on_this_disk[8]; | |
105 | unsigned char entries[8]; | |
106 | unsigned char size[8]; | |
107 | unsigned char offset[8]; | |
108 | unsigned char _end[1]; | |
109 | }; | |
110 | ||
111 | struct zip64_dir_trailer_locator { | |
112 | unsigned char magic[4]; | |
113 | unsigned char disk[4]; | |
114 | unsigned char offset[8]; | |
115 | unsigned char number_of_disks[4]; | |
116 | unsigned char _end[1]; | |
117 | }; | |
118 | ||
0ea865ce RS |
119 | /* |
120 | * On ARM, padding is added at the end of the struct, so a simple | |
121 | * sizeof(struct ...) reports two bytes more than the payload size | |
122 | * we're interested in. | |
123 | */ | |
124 | #define ZIP_LOCAL_HEADER_SIZE offsetof(struct zip_local_header, _end) | |
2158f883 | 125 | #define ZIP_DATA_DESC_SIZE offsetof(struct zip_data_desc, _end) |
4cdf3f9d | 126 | #define ZIP64_DATA_DESC_SIZE offsetof(struct zip64_data_desc, _end) |
0ea865ce RS |
127 | #define ZIP_DIR_HEADER_SIZE offsetof(struct zip_dir_header, _end) |
128 | #define ZIP_DIR_TRAILER_SIZE offsetof(struct zip_dir_trailer, _end) | |
227bf598 RS |
129 | #define ZIP_EXTRA_MTIME_SIZE offsetof(struct zip_extra_mtime, _end) |
130 | #define ZIP_EXTRA_MTIME_PAYLOAD_SIZE \ | |
131 | (ZIP_EXTRA_MTIME_SIZE - offsetof(struct zip_extra_mtime, flags)) | |
4cdf3f9d RS |
132 | #define ZIP64_EXTRA_SIZE offsetof(struct zip64_extra, _end) |
133 | #define ZIP64_EXTRA_PAYLOAD_SIZE \ | |
134 | (ZIP64_EXTRA_SIZE - offsetof(struct zip64_extra, size)) | |
88329ca8 RS |
135 | #define ZIP64_DIR_TRAILER_SIZE offsetof(struct zip64_dir_trailer, _end) |
136 | #define ZIP64_DIR_TRAILER_RECORD_SIZE \ | |
137 | (ZIP64_DIR_TRAILER_SIZE - \ | |
138 | offsetof(struct zip64_dir_trailer, creator_version)) | |
139 | #define ZIP64_DIR_TRAILER_LOCATOR_SIZE \ | |
140 | offsetof(struct zip64_dir_trailer_locator, _end) | |
0ea865ce | 141 | |
e4fbbfe9 RS |
142 | static void copy_le16(unsigned char *dest, unsigned int n) |
143 | { | |
144 | dest[0] = 0xff & n; | |
145 | dest[1] = 0xff & (n >> 010); | |
146 | } | |
147 | ||
148 | static void copy_le32(unsigned char *dest, unsigned int n) | |
149 | { | |
150 | dest[0] = 0xff & n; | |
151 | dest[1] = 0xff & (n >> 010); | |
152 | dest[2] = 0xff & (n >> 020); | |
153 | dest[3] = 0xff & (n >> 030); | |
154 | } | |
155 | ||
88329ca8 RS |
156 | static void copy_le64(unsigned char *dest, uint64_t n) |
157 | { | |
158 | dest[0] = 0xff & n; | |
159 | dest[1] = 0xff & (n >> 010); | |
160 | dest[2] = 0xff & (n >> 020); | |
161 | dest[3] = 0xff & (n >> 030); | |
162 | dest[4] = 0xff & (n >> 040); | |
163 | dest[5] = 0xff & (n >> 050); | |
164 | dest[6] = 0xff & (n >> 060); | |
165 | dest[7] = 0xff & (n >> 070); | |
166 | } | |
167 | ||
168 | static uint64_t clamp_max(uint64_t n, uint64_t max, int *clamped) | |
169 | { | |
170 | if (n <= max) | |
171 | return n; | |
172 | *clamped = 1; | |
173 | return max; | |
174 | } | |
175 | ||
176 | static void copy_le16_clamp(unsigned char *dest, uint64_t n, int *clamped) | |
177 | { | |
178 | copy_le16(dest, clamp_max(n, 0xffff, clamped)); | |
179 | } | |
180 | ||
af95749f RS |
181 | static void copy_le32_clamp(unsigned char *dest, uint64_t n, int *clamped) |
182 | { | |
183 | copy_le32(dest, clamp_max(n, 0xffffffff, clamped)); | |
184 | } | |
185 | ||
3c78fd80 RS |
186 | static int strbuf_add_le(struct strbuf *sb, size_t size, uintmax_t n) |
187 | { | |
188 | while (size-- > 0) { | |
189 | strbuf_addch(sb, n & 0xff); | |
190 | n >>= 8; | |
191 | } | |
192 | return -!!n; | |
193 | } | |
194 | ||
af95749f RS |
195 | static uint32_t clamp32(uintmax_t n) |
196 | { | |
197 | const uintmax_t max = 0xffffffff; | |
198 | return (n < max) ? n : max; | |
199 | } | |
200 | ||
c3c2e1a0 RS |
201 | static void *zlib_deflate_raw(void *data, unsigned long size, |
202 | int compression_level, | |
203 | unsigned long *compressed_size) | |
e4fbbfe9 | 204 | { |
ef49a7a0 | 205 | git_zstream stream; |
e4fbbfe9 RS |
206 | unsigned long maxsize; |
207 | void *buffer; | |
208 | int result; | |
209 | ||
c3c2e1a0 | 210 | git_deflate_init_raw(&stream, compression_level); |
225a6f10 | 211 | maxsize = git_deflate_bound(&stream, size); |
e4fbbfe9 RS |
212 | buffer = xmalloc(maxsize); |
213 | ||
214 | stream.next_in = data; | |
215 | stream.avail_in = size; | |
216 | stream.next_out = buffer; | |
217 | stream.avail_out = maxsize; | |
218 | ||
219 | do { | |
55bb5c91 | 220 | result = git_deflate(&stream, Z_FINISH); |
e4fbbfe9 RS |
221 | } while (result == Z_OK); |
222 | ||
223 | if (result != Z_STREAM_END) { | |
224 | free(buffer); | |
225 | return NULL; | |
226 | } | |
227 | ||
55bb5c91 | 228 | git_deflate_end(&stream); |
e4fbbfe9 RS |
229 | *compressed_size = stream.total_out; |
230 | ||
231 | return buffer; | |
232 | } | |
233 | ||
2158f883 RS |
234 | static void write_zip_data_desc(unsigned long size, |
235 | unsigned long compressed_size, | |
236 | unsigned long crc) | |
237 | { | |
4cdf3f9d RS |
238 | if (size >= 0xffffffff || compressed_size >= 0xffffffff) { |
239 | struct zip64_data_desc trailer; | |
240 | copy_le32(trailer.magic, 0x08074b50); | |
241 | copy_le32(trailer.crc32, crc); | |
242 | copy_le64(trailer.compressed_size, compressed_size); | |
243 | copy_le64(trailer.size, size); | |
244 | write_or_die(1, &trailer, ZIP64_DATA_DESC_SIZE); | |
245 | zip_offset += ZIP64_DATA_DESC_SIZE; | |
246 | } else { | |
247 | struct zip_data_desc trailer; | |
248 | copy_le32(trailer.magic, 0x08074b50); | |
249 | copy_le32(trailer.crc32, crc); | |
250 | copy_le32(trailer.compressed_size, compressed_size); | |
251 | copy_le32(trailer.size, size); | |
252 | write_or_die(1, &trailer, ZIP_DATA_DESC_SIZE); | |
253 | zip_offset += ZIP_DATA_DESC_SIZE; | |
254 | } | |
2158f883 RS |
255 | } |
256 | ||
ebf5374a RS |
257 | static void set_zip_header_data_desc(struct zip_local_header *header, |
258 | unsigned long size, | |
259 | unsigned long compressed_size, | |
260 | unsigned long crc) | |
261 | { | |
262 | copy_le32(header->crc32, crc); | |
263 | copy_le32(header->compressed_size, compressed_size); | |
264 | copy_le32(header->size, size); | |
265 | } | |
266 | ||
88182bab RS |
267 | static int has_only_ascii(const char *s) |
268 | { | |
269 | for (;;) { | |
270 | int c = *s++; | |
271 | if (c == '\0') | |
272 | return 1; | |
273 | if (!isascii(c)) | |
274 | return 0; | |
275 | } | |
276 | } | |
277 | ||
acd00ea0 NTND |
278 | static int entry_is_binary(struct index_state *istate, const char *path, |
279 | const void *buffer, size_t size) | |
4aff646d | 280 | { |
acd00ea0 | 281 | struct userdiff_driver *driver = userdiff_find_by_path(istate, path); |
4aff646d RS |
282 | if (!driver) |
283 | driver = userdiff_find_by_name("default"); | |
284 | if (driver->binary != -1) | |
285 | return driver->binary; | |
286 | return buffer_is_binary(buffer, size); | |
287 | } | |
288 | ||
2158f883 RS |
289 | #define STREAM_BUFFER_SIZE (1024 * 16) |
290 | ||
562e25ab | 291 | static int write_zip_entry(struct archiver_args *args, |
015ff4f8 | 292 | const struct object_id *oid, |
9cb513b7 | 293 | const char *path, size_t pathlen, |
200589ab RS |
294 | unsigned int mode, |
295 | void *buffer, unsigned long size) | |
e4fbbfe9 RS |
296 | { |
297 | struct zip_local_header header; | |
3c78fd80 | 298 | uintmax_t offset = zip_offset; |
227bf598 | 299 | struct zip_extra_mtime extra; |
4cdf3f9d RS |
300 | struct zip64_extra extra64; |
301 | size_t header_extra_size = ZIP_EXTRA_MTIME_SIZE; | |
302 | int need_zip64_extra = 0; | |
bb52d22e | 303 | unsigned long attr2; |
e4fbbfe9 | 304 | unsigned long compressed_size; |
e4fbbfe9 | 305 | unsigned long crc; |
e05e8cf0 | 306 | enum zip_method method; |
e4fbbfe9 | 307 | unsigned char *out; |
e4fbbfe9 | 308 | void *deflated = NULL; |
2158f883 RS |
309 | struct git_istream *stream = NULL; |
310 | unsigned long flags = 0; | |
4aff646d RS |
311 | int is_binary = -1; |
312 | const char *path_without_prefix = path + args->baselen; | |
0f747f9d | 313 | unsigned int creator_version = 0; |
ebdfa294 | 314 | unsigned int version_needed = 10; |
af95749f RS |
315 | size_t zip_dir_extra_size = ZIP_EXTRA_MTIME_SIZE; |
316 | size_t zip64_dir_extra_payload_size = 0; | |
e4fbbfe9 | 317 | |
38f4d138 | 318 | crc = crc32(0, NULL, 0); |
e4fbbfe9 | 319 | |
88182bab RS |
320 | if (!has_only_ascii(path)) { |
321 | if (is_utf8(path)) | |
322 | flags |= ZIP_UTF8; | |
323 | else | |
02f3fe5a | 324 | warning(_("path is not valid UTF-8: %s"), path); |
88182bab RS |
325 | } |
326 | ||
e4fbbfe9 | 327 | if (pathlen > 0xffff) { |
02f3fe5a | 328 | return error(_("path too long (%d chars, SHA1: %s): %s"), |
015ff4f8 | 329 | (int)pathlen, oid_to_hex(oid), path); |
e4fbbfe9 RS |
330 | } |
331 | ||
302b9282 | 332 | if (S_ISDIR(mode) || S_ISGITLINK(mode)) { |
e05e8cf0 | 333 | method = ZIP_METHOD_STORE; |
62cdce17 | 334 | attr2 = 16; |
e4fbbfe9 | 335 | out = NULL; |
e4fbbfe9 | 336 | compressed_size = 0; |
62cdce17 | 337 | } else if (S_ISREG(mode) || S_ISLNK(mode)) { |
e05e8cf0 | 338 | method = ZIP_METHOD_STORE; |
bb52d22e JH |
339 | attr2 = S_ISLNK(mode) ? ((mode | 0777) << 16) : |
340 | (mode & 0111) ? ((mode) << 16) : 0; | |
0f747f9d RS |
341 | if (S_ISLNK(mode) || (mode & 0111)) |
342 | creator_version = 0x0317; | |
2158f883 | 343 | if (S_ISREG(mode) && args->compression_level != 0 && size > 0) |
e05e8cf0 | 344 | method = ZIP_METHOD_DEFLATE; |
2158f883 | 345 | |
200589ab RS |
346 | if (!buffer) { |
347 | enum object_type type; | |
c8123e72 MT |
348 | stream = open_istream(args->repo, oid, &type, &size, |
349 | NULL); | |
2158f883 | 350 | if (!stream) |
02f3fe5a | 351 | return error(_("cannot stream blob %s"), |
015ff4f8 | 352 | oid_to_hex(oid)); |
2158f883 | 353 | flags |= ZIP_STREAM; |
200589ab | 354 | out = NULL; |
2158f883 | 355 | } else { |
2158f883 | 356 | crc = crc32(crc, buffer, size); |
acd00ea0 NTND |
357 | is_binary = entry_is_binary(args->repo->index, |
358 | path_without_prefix, | |
4aff646d | 359 | buffer, size); |
2158f883 RS |
360 | out = buffer; |
361 | } | |
e05e8cf0 | 362 | compressed_size = (method == ZIP_METHOD_STORE) ? size : 0; |
e4fbbfe9 | 363 | } else { |
02f3fe5a | 364 | return error(_("unsupported file mode: 0%o (SHA1: %s)"), mode, |
015ff4f8 | 365 | oid_to_hex(oid)); |
e4fbbfe9 RS |
366 | } |
367 | ||
88329ca8 RS |
368 | if (creator_version > max_creator_version) |
369 | max_creator_version = creator_version; | |
370 | ||
e05e8cf0 | 371 | if (buffer && method == ZIP_METHOD_DEFLATE) { |
c3c2e1a0 RS |
372 | out = deflated = zlib_deflate_raw(buffer, size, |
373 | args->compression_level, | |
374 | &compressed_size); | |
375 | if (!out || compressed_size >= size) { | |
376 | out = buffer; | |
e05e8cf0 | 377 | method = ZIP_METHOD_STORE; |
e4fbbfe9 RS |
378 | compressed_size = size; |
379 | } | |
380 | } | |
381 | ||
227bf598 RS |
382 | copy_le16(extra.magic, 0x5455); |
383 | copy_le16(extra.extra_size, ZIP_EXTRA_MTIME_PAYLOAD_SIZE); | |
384 | extra.flags[0] = 1; /* just mtime */ | |
385 | copy_le32(extra.mtime, args->time); | |
386 | ||
4cdf3f9d RS |
387 | if (size > 0xffffffff || compressed_size > 0xffffffff) |
388 | need_zip64_extra = 1; | |
389 | if (stream && size > 0x7fffffff) | |
390 | need_zip64_extra = 1; | |
391 | ||
ebdfa294 RS |
392 | if (need_zip64_extra) |
393 | version_needed = 45; | |
394 | ||
e4fbbfe9 | 395 | copy_le32(header.magic, 0x04034b50); |
ebdfa294 | 396 | copy_le16(header.version, version_needed); |
2158f883 | 397 | copy_le16(header.flags, flags); |
e4fbbfe9 RS |
398 | copy_le16(header.compression_method, method); |
399 | copy_le16(header.mtime, zip_time); | |
400 | copy_le16(header.mdate, zip_date); | |
4cdf3f9d RS |
401 | if (need_zip64_extra) { |
402 | set_zip_header_data_desc(&header, 0xffffffff, 0xffffffff, crc); | |
403 | header_extra_size += ZIP64_EXTRA_SIZE; | |
404 | } else { | |
405 | set_zip_header_data_desc(&header, size, compressed_size, crc); | |
406 | } | |
e4fbbfe9 | 407 | copy_le16(header.filename_length, pathlen); |
4cdf3f9d | 408 | copy_le16(header.extra_length, header_extra_size); |
0ea865ce RS |
409 | write_or_die(1, &header, ZIP_LOCAL_HEADER_SIZE); |
410 | zip_offset += ZIP_LOCAL_HEADER_SIZE; | |
e4fbbfe9 RS |
411 | write_or_die(1, path, pathlen); |
412 | zip_offset += pathlen; | |
227bf598 RS |
413 | write_or_die(1, &extra, ZIP_EXTRA_MTIME_SIZE); |
414 | zip_offset += ZIP_EXTRA_MTIME_SIZE; | |
4cdf3f9d RS |
415 | if (need_zip64_extra) { |
416 | copy_le16(extra64.magic, 0x0001); | |
417 | copy_le16(extra64.extra_size, ZIP64_EXTRA_PAYLOAD_SIZE); | |
418 | copy_le64(extra64.size, size); | |
419 | copy_le64(extra64.compressed_size, compressed_size); | |
420 | write_or_die(1, &extra64, ZIP64_EXTRA_SIZE); | |
421 | zip_offset += ZIP64_EXTRA_SIZE; | |
422 | } | |
423 | ||
e05e8cf0 | 424 | if (stream && method == ZIP_METHOD_STORE) { |
2158f883 RS |
425 | unsigned char buf[STREAM_BUFFER_SIZE]; |
426 | ssize_t readlen; | |
427 | ||
428 | for (;;) { | |
429 | readlen = read_istream(stream, buf, sizeof(buf)); | |
430 | if (readlen <= 0) | |
431 | break; | |
432 | crc = crc32(crc, buf, readlen); | |
4aff646d | 433 | if (is_binary == -1) |
acd00ea0 NTND |
434 | is_binary = entry_is_binary(args->repo->index, |
435 | path_without_prefix, | |
4aff646d | 436 | buf, readlen); |
2158f883 RS |
437 | write_or_die(1, buf, readlen); |
438 | } | |
439 | close_istream(stream); | |
440 | if (readlen) | |
441 | return readlen; | |
442 | ||
443 | compressed_size = size; | |
444 | zip_offset += compressed_size; | |
445 | ||
446 | write_zip_data_desc(size, compressed_size, crc); | |
e05e8cf0 | 447 | } else if (stream && method == ZIP_METHOD_DEFLATE) { |
c743c215 RS |
448 | unsigned char buf[STREAM_BUFFER_SIZE]; |
449 | ssize_t readlen; | |
450 | git_zstream zstream; | |
451 | int result; | |
452 | size_t out_len; | |
453 | unsigned char compressed[STREAM_BUFFER_SIZE * 2]; | |
454 | ||
c3c2e1a0 | 455 | git_deflate_init_raw(&zstream, args->compression_level); |
c743c215 RS |
456 | |
457 | compressed_size = 0; | |
458 | zstream.next_out = compressed; | |
459 | zstream.avail_out = sizeof(compressed); | |
460 | ||
461 | for (;;) { | |
462 | readlen = read_istream(stream, buf, sizeof(buf)); | |
463 | if (readlen <= 0) | |
464 | break; | |
465 | crc = crc32(crc, buf, readlen); | |
4aff646d | 466 | if (is_binary == -1) |
acd00ea0 NTND |
467 | is_binary = entry_is_binary(args->repo->index, |
468 | path_without_prefix, | |
4aff646d | 469 | buf, readlen); |
c743c215 RS |
470 | |
471 | zstream.next_in = buf; | |
472 | zstream.avail_in = readlen; | |
473 | result = git_deflate(&zstream, 0); | |
474 | if (result != Z_OK) | |
02f3fe5a | 475 | die(_("deflate error (%d)"), result); |
c3c2e1a0 | 476 | out_len = zstream.next_out - compressed; |
c743c215 RS |
477 | |
478 | if (out_len > 0) { | |
c3c2e1a0 | 479 | write_or_die(1, compressed, out_len); |
c743c215 RS |
480 | compressed_size += out_len; |
481 | zstream.next_out = compressed; | |
482 | zstream.avail_out = sizeof(compressed); | |
483 | } | |
484 | ||
485 | } | |
486 | close_istream(stream); | |
487 | if (readlen) | |
488 | return readlen; | |
489 | ||
490 | zstream.next_in = buf; | |
491 | zstream.avail_in = 0; | |
492 | result = git_deflate(&zstream, Z_FINISH); | |
493 | if (result != Z_STREAM_END) | |
494 | die("deflate error (%d)", result); | |
495 | ||
496 | git_deflate_end(&zstream); | |
c3c2e1a0 RS |
497 | out_len = zstream.next_out - compressed; |
498 | write_or_die(1, compressed, out_len); | |
c743c215 RS |
499 | compressed_size += out_len; |
500 | zip_offset += compressed_size; | |
501 | ||
502 | write_zip_data_desc(size, compressed_size, crc); | |
2158f883 | 503 | } else if (compressed_size > 0) { |
e4fbbfe9 RS |
504 | write_or_die(1, out, compressed_size); |
505 | zip_offset += compressed_size; | |
506 | } | |
507 | ||
e4fbbfe9 | 508 | free(deflated); |
e4fbbfe9 | 509 | |
4cdf3f9d RS |
510 | if (compressed_size > 0xffffffff || size > 0xffffffff || |
511 | offset > 0xffffffff) { | |
512 | if (compressed_size >= 0xffffffff) | |
513 | zip64_dir_extra_payload_size += 8; | |
514 | if (size >= 0xffffffff) | |
515 | zip64_dir_extra_payload_size += 8; | |
516 | if (offset >= 0xffffffff) | |
517 | zip64_dir_extra_payload_size += 8; | |
af95749f RS |
518 | zip_dir_extra_size += 2 + 2 + zip64_dir_extra_payload_size; |
519 | } | |
520 | ||
3c78fd80 RS |
521 | strbuf_add_le(&zip_dir, 4, 0x02014b50); /* magic */ |
522 | strbuf_add_le(&zip_dir, 2, creator_version); | |
ebdfa294 | 523 | strbuf_add_le(&zip_dir, 2, version_needed); |
3c78fd80 RS |
524 | strbuf_add_le(&zip_dir, 2, flags); |
525 | strbuf_add_le(&zip_dir, 2, method); | |
526 | strbuf_add_le(&zip_dir, 2, zip_time); | |
527 | strbuf_add_le(&zip_dir, 2, zip_date); | |
528 | strbuf_add_le(&zip_dir, 4, crc); | |
4cdf3f9d RS |
529 | strbuf_add_le(&zip_dir, 4, clamp32(compressed_size)); |
530 | strbuf_add_le(&zip_dir, 4, clamp32(size)); | |
3c78fd80 | 531 | strbuf_add_le(&zip_dir, 2, pathlen); |
af95749f | 532 | strbuf_add_le(&zip_dir, 2, zip_dir_extra_size); |
3c78fd80 RS |
533 | strbuf_add_le(&zip_dir, 2, 0); /* comment length */ |
534 | strbuf_add_le(&zip_dir, 2, 0); /* disk */ | |
535 | strbuf_add_le(&zip_dir, 2, !is_binary); | |
536 | strbuf_add_le(&zip_dir, 4, attr2); | |
af95749f | 537 | strbuf_add_le(&zip_dir, 4, clamp32(offset)); |
c061a149 RS |
538 | strbuf_add(&zip_dir, path, pathlen); |
539 | strbuf_add(&zip_dir, &extra, ZIP_EXTRA_MTIME_SIZE); | |
af95749f RS |
540 | if (zip64_dir_extra_payload_size) { |
541 | strbuf_add_le(&zip_dir, 2, 0x0001); /* magic */ | |
542 | strbuf_add_le(&zip_dir, 2, zip64_dir_extra_payload_size); | |
4cdf3f9d RS |
543 | if (size >= 0xffffffff) |
544 | strbuf_add_le(&zip_dir, 8, size); | |
545 | if (compressed_size >= 0xffffffff) | |
546 | strbuf_add_le(&zip_dir, 8, compressed_size); | |
af95749f RS |
547 | if (offset >= 0xffffffff) |
548 | strbuf_add_le(&zip_dir, 8, offset); | |
549 | } | |
ebf5374a RS |
550 | zip_dir_entries++; |
551 | ||
562e25ab | 552 | return 0; |
e4fbbfe9 RS |
553 | } |
554 | ||
88329ca8 RS |
555 | static void write_zip64_trailer(void) |
556 | { | |
557 | struct zip64_dir_trailer trailer64; | |
558 | struct zip64_dir_trailer_locator locator64; | |
559 | ||
560 | copy_le32(trailer64.magic, 0x06064b50); | |
561 | copy_le64(trailer64.record_size, ZIP64_DIR_TRAILER_RECORD_SIZE); | |
562 | copy_le16(trailer64.creator_version, max_creator_version); | |
563 | copy_le16(trailer64.version, 45); | |
564 | copy_le32(trailer64.disk, 0); | |
565 | copy_le32(trailer64.directory_start_disk, 0); | |
566 | copy_le64(trailer64.entries_on_this_disk, zip_dir_entries); | |
567 | copy_le64(trailer64.entries, zip_dir_entries); | |
c061a149 | 568 | copy_le64(trailer64.size, zip_dir.len); |
88329ca8 RS |
569 | copy_le64(trailer64.offset, zip_offset); |
570 | ||
571 | copy_le32(locator64.magic, 0x07064b50); | |
572 | copy_le32(locator64.disk, 0); | |
c061a149 | 573 | copy_le64(locator64.offset, zip_offset + zip_dir.len); |
88329ca8 RS |
574 | copy_le32(locator64.number_of_disks, 1); |
575 | ||
576 | write_or_die(1, &trailer64, ZIP64_DIR_TRAILER_SIZE); | |
577 | write_or_die(1, &locator64, ZIP64_DIR_TRAILER_LOCATOR_SIZE); | |
578 | } | |
579 | ||
bbf05cf7 | 580 | static void write_zip_trailer(const struct object_id *oid) |
e4fbbfe9 RS |
581 | { |
582 | struct zip_dir_trailer trailer; | |
88329ca8 | 583 | int clamped = 0; |
e4fbbfe9 RS |
584 | |
585 | copy_le32(trailer.magic, 0x06054b50); | |
586 | copy_le16(trailer.disk, 0); | |
587 | copy_le16(trailer.directory_start_disk, 0); | |
88329ca8 RS |
588 | copy_le16_clamp(trailer.entries_on_this_disk, zip_dir_entries, |
589 | &clamped); | |
590 | copy_le16_clamp(trailer.entries, zip_dir_entries, &clamped); | |
c061a149 | 591 | copy_le32(trailer.size, zip_dir.len); |
af95749f | 592 | copy_le32_clamp(trailer.offset, zip_offset, &clamped); |
bbf05cf7 | 593 | copy_le16(trailer.comment_length, oid ? the_hash_algo->hexsz : 0); |
e4fbbfe9 | 594 | |
c061a149 | 595 | write_or_die(1, zip_dir.buf, zip_dir.len); |
88329ca8 RS |
596 | if (clamped) |
597 | write_zip64_trailer(); | |
0ea865ce | 598 | write_or_die(1, &trailer, ZIP_DIR_TRAILER_SIZE); |
bbf05cf7 | 599 | if (oid) |
600 | write_or_die(1, oid_to_hex(oid), the_hash_algo->hexsz); | |
e4fbbfe9 RS |
601 | } |
602 | ||
dddbad72 | 603 | static void dos_time(timestamp_t *timestamp, int *dos_date, int *dos_time) |
e4fbbfe9 | 604 | { |
dddbad72 | 605 | time_t time; |
b5ab03bc | 606 | struct tm tm; |
dddbad72 JS |
607 | |
608 | if (date_overflows(*timestamp)) | |
02f3fe5a | 609 | die(_("timestamp too large for this system: %"PRItime), |
dddbad72 JS |
610 | *timestamp); |
611 | time = (time_t)*timestamp; | |
b5ab03bc | 612 | localtime_r(&time, &tm); |
dddbad72 | 613 | *timestamp = time; |
e4fbbfe9 | 614 | |
b5ab03bc ĐTCD |
615 | *dos_date = tm.tm_mday + (tm.tm_mon + 1) * 32 + |
616 | (tm.tm_year + 1900 - 1980) * 512; | |
617 | *dos_time = tm.tm_sec / 2 + tm.tm_min * 32 + tm.tm_hour * 2048; | |
e4fbbfe9 RS |
618 | } |
619 | ||
783a86c1 | 620 | static int archive_zip_config(const char *var, const char *value, |
a4e7e317 | 621 | const struct config_context *ctx UNUSED, |
5cf88fd8 | 622 | void *data UNUSED) |
965cba2e JK |
623 | { |
624 | return userdiff_config(var, value); | |
625 | } | |
626 | ||
5cf88fd8 | 627 | static int write_zip_archive(const struct archiver *ar UNUSED, |
4d7c9898 | 628 | struct archiver_args *args) |
ec06bff5 | 629 | { |
562e25ab RS |
630 | int err; |
631 | ||
965cba2e JK |
632 | git_config(archive_zip_config, NULL); |
633 | ||
ec06bff5 FBH |
634 | dos_time(&args->time, &zip_date, &zip_time); |
635 | ||
c061a149 | 636 | strbuf_init(&zip_dir, 0); |
562e25ab RS |
637 | |
638 | err = write_archive_entries(args, write_zip_entry); | |
639 | if (!err) | |
bbf05cf7 | 640 | write_zip_trailer(args->commit_oid); |
ec06bff5 | 641 | |
c061a149 | 642 | strbuf_release(&zip_dir); |
ec06bff5 | 643 | |
562e25ab | 644 | return err; |
ec06bff5 | 645 | } |
13e0f88d JK |
646 | |
647 | static struct archiver zip_archiver = { | |
4fbedd4d ÆAB |
648 | .name = "zip", |
649 | .write_archive = write_zip_archive, | |
650 | .flags = ARCHIVER_WANT_COMPRESSION_LEVELS|ARCHIVER_REMOTE, | |
13e0f88d JK |
651 | }; |
652 | ||
653 | void init_zip_archiver(void) | |
654 | { | |
655 | register_archiver(&zip_archiver); | |
656 | } |