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Commit | Line | Data |
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6eb7ed54 DB |
1 | #include "cache.h" |
2 | #include "commit.h" | |
6eb7ed54 | 3 | |
4250a5e5 DB |
4 | #include "pull.h" |
5 | ||
6eb7ed54 DB |
6 | #include <curl/curl.h> |
7 | #include <curl/easy.h> | |
8 | ||
4a30976e JS |
9 | #if LIBCURL_VERSION_NUM < 0x070704 |
10 | #define curl_global_cleanup() do { /* nothing */ } while(0) | |
11 | #endif | |
12 | #if LIBCURL_VERSION_NUM < 0x070800 | |
13 | #define curl_global_init(a) do { /* nothing */ } while(0) | |
14 | #endif | |
4a30976e | 15 | |
6eb7ed54 DB |
16 | static CURL *curl; |
17 | ||
18 | static char *base; | |
19 | ||
6eb7ed54 DB |
20 | static SHA_CTX c; |
21 | static z_stream stream; | |
22 | ||
23 | static int local; | |
24 | static int zret; | |
25 | ||
3dcb90f5 DT |
26 | static int curl_ssl_verify; |
27 | ||
fa3e0655 DB |
28 | struct buffer |
29 | { | |
30 | size_t posn; | |
31 | size_t size; | |
32 | void *buffer; | |
33 | }; | |
34 | ||
35 | static size_t fwrite_buffer(void *ptr, size_t eltsize, size_t nmemb, | |
182005b9 DB |
36 | struct buffer *buffer) |
37 | { | |
fa3e0655 DB |
38 | size_t size = eltsize * nmemb; |
39 | if (size > buffer->size - buffer->posn) | |
40 | size = buffer->size - buffer->posn; | |
41 | memcpy(buffer->buffer + buffer->posn, ptr, size); | |
42 | buffer->posn += size; | |
43 | return size; | |
44 | } | |
45 | ||
182005b9 DB |
46 | static size_t fwrite_sha1_file(void *ptr, size_t eltsize, size_t nmemb, |
47 | void *data) | |
48 | { | |
bf0f910d | 49 | unsigned char expn[4096]; |
6eb7ed54 DB |
50 | size_t size = eltsize * nmemb; |
51 | int posn = 0; | |
52 | do { | |
53 | ssize_t retval = write(local, ptr + posn, size - posn); | |
54 | if (retval < 0) | |
55 | return posn; | |
56 | posn += retval; | |
57 | } while (posn < size); | |
58 | ||
59 | stream.avail_in = size; | |
60 | stream.next_in = ptr; | |
61 | do { | |
62 | stream.next_out = expn; | |
63 | stream.avail_out = sizeof(expn); | |
64 | zret = inflate(&stream, Z_SYNC_FLUSH); | |
65 | SHA1_Update(&c, expn, sizeof(expn) - stream.avail_out); | |
66 | } while (stream.avail_in && zret == Z_OK); | |
67 | return size; | |
68 | } | |
69 | ||
182005b9 DB |
70 | static int got_indices = 0; |
71 | ||
72 | static struct packed_git *packs = NULL; | |
73 | ||
74 | static int fetch_index(unsigned char *sha1) | |
75 | { | |
76 | char *filename; | |
77 | char *url; | |
78 | ||
79 | FILE *indexfile; | |
80 | ||
81 | if (has_pack_index(sha1)) | |
82 | return 0; | |
83 | ||
84 | if (get_verbosely) | |
85 | fprintf(stderr, "Getting index for pack %s\n", | |
86 | sha1_to_hex(sha1)); | |
87 | ||
88 | url = xmalloc(strlen(base) + 64); | |
89 | sprintf(url, "%s/objects/pack/pack-%s.idx", | |
90 | base, sha1_to_hex(sha1)); | |
91 | ||
92 | filename = sha1_pack_index_name(sha1); | |
93 | indexfile = fopen(filename, "w"); | |
94 | if (!indexfile) | |
95 | return error("Unable to open local file %s for pack index", | |
96 | filename); | |
97 | ||
98 | curl_easy_setopt(curl, CURLOPT_FILE, indexfile); | |
99 | curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite); | |
100 | curl_easy_setopt(curl, CURLOPT_URL, url); | |
101 | ||
102 | if (curl_easy_perform(curl)) { | |
103 | fclose(indexfile); | |
104 | return error("Unable to get pack index %s", url); | |
105 | } | |
106 | ||
107 | fclose(indexfile); | |
108 | return 0; | |
109 | } | |
110 | ||
111 | static int setup_index(unsigned char *sha1) | |
112 | { | |
113 | struct packed_git *new_pack; | |
114 | if (has_pack_file(sha1)) | |
115 | return 0; // don't list this as something we can get | |
116 | ||
117 | if (fetch_index(sha1)) | |
118 | return -1; | |
119 | ||
120 | new_pack = parse_pack_index(sha1); | |
121 | new_pack->next = packs; | |
122 | packs = new_pack; | |
123 | return 0; | |
124 | } | |
125 | ||
126 | static int fetch_indices(void) | |
127 | { | |
128 | unsigned char sha1[20]; | |
129 | char *url; | |
130 | struct buffer buffer; | |
131 | char *data; | |
132 | int i = 0; | |
133 | ||
134 | if (got_indices) | |
135 | return 0; | |
136 | ||
137 | data = xmalloc(4096); | |
138 | buffer.size = 4096; | |
139 | buffer.posn = 0; | |
140 | buffer.buffer = data; | |
141 | ||
142 | if (get_verbosely) | |
143 | fprintf(stderr, "Getting pack list\n"); | |
144 | ||
145 | url = xmalloc(strlen(base) + 21); | |
146 | sprintf(url, "%s/objects/info/packs", base); | |
147 | ||
148 | curl_easy_setopt(curl, CURLOPT_FILE, &buffer); | |
149 | curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite_buffer); | |
150 | curl_easy_setopt(curl, CURLOPT_URL, url); | |
151 | ||
152 | if (curl_easy_perform(curl)) { | |
153 | return error("Unable to get pack index %s", url); | |
154 | } | |
155 | ||
156 | do { | |
157 | switch (data[i]) { | |
158 | case 'P': | |
159 | i++; | |
160 | if (i + 52 < buffer.posn && | |
161 | !strncmp(data + i, " pack-", 6) && | |
162 | !strncmp(data + i + 46, ".pack\n", 6)) { | |
163 | get_sha1_hex(data + i + 6, sha1); | |
164 | setup_index(sha1); | |
165 | i += 51; | |
166 | break; | |
167 | } | |
168 | default: | |
169 | while (data[i] != '\n') | |
170 | i++; | |
171 | } | |
172 | i++; | |
173 | } while (i < buffer.posn); | |
174 | ||
175 | got_indices = 1; | |
176 | return 0; | |
177 | } | |
178 | ||
179 | static int fetch_pack(unsigned char *sha1) | |
180 | { | |
181 | char *url; | |
182 | struct packed_git *target; | |
183 | struct packed_git **lst; | |
184 | FILE *packfile; | |
185 | char *filename; | |
186 | ||
187 | if (fetch_indices()) | |
188 | return -1; | |
189 | target = find_sha1_pack(sha1, packs); | |
190 | if (!target) | |
191 | return error("Couldn't get %s: not separate or in any pack", | |
192 | sha1_to_hex(sha1)); | |
193 | ||
194 | if (get_verbosely) { | |
195 | fprintf(stderr, "Getting pack %s\n", | |
196 | sha1_to_hex(target->sha1)); | |
197 | fprintf(stderr, " which contains %s\n", | |
198 | sha1_to_hex(sha1)); | |
199 | } | |
200 | ||
201 | url = xmalloc(strlen(base) + 65); | |
202 | sprintf(url, "%s/objects/pack/pack-%s.pack", | |
203 | base, sha1_to_hex(target->sha1)); | |
204 | ||
205 | filename = sha1_pack_name(target->sha1); | |
206 | packfile = fopen(filename, "w"); | |
207 | if (!packfile) | |
208 | return error("Unable to open local file %s for pack", | |
209 | filename); | |
210 | ||
211 | curl_easy_setopt(curl, CURLOPT_FILE, packfile); | |
212 | curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite); | |
213 | curl_easy_setopt(curl, CURLOPT_URL, url); | |
214 | ||
215 | if (curl_easy_perform(curl)) { | |
216 | fclose(packfile); | |
217 | return error("Unable to get pack file %s", url); | |
218 | } | |
219 | ||
220 | fclose(packfile); | |
221 | ||
222 | lst = &packs; | |
223 | while (*lst != target) | |
224 | lst = &((*lst)->next); | |
225 | *lst = (*lst)->next; | |
226 | ||
227 | install_packed_git(target); | |
228 | ||
229 | return 0; | |
230 | } | |
231 | ||
4250a5e5 | 232 | int fetch(unsigned char *sha1) |
6eb7ed54 DB |
233 | { |
234 | char *hex = sha1_to_hex(sha1); | |
235 | char *filename = sha1_file_name(sha1); | |
bf0f910d | 236 | unsigned char real_sha1[20]; |
6eb7ed54 DB |
237 | char *url; |
238 | char *posn; | |
239 | ||
6eb7ed54 DB |
240 | local = open(filename, O_WRONLY | O_CREAT | O_EXCL, 0666); |
241 | ||
242 | if (local < 0) | |
182005b9 | 243 | return error("Couldn't open local object %s\n", filename); |
6eb7ed54 DB |
244 | |
245 | memset(&stream, 0, sizeof(stream)); | |
246 | ||
247 | inflateInit(&stream); | |
248 | ||
249 | SHA1_Init(&c); | |
250 | ||
182005b9 | 251 | curl_easy_setopt(curl, CURLOPT_FAILONERROR, 1); |
6eb7ed54 DB |
252 | curl_easy_setopt(curl, CURLOPT_FILE, NULL); |
253 | curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file); | |
254 | ||
812666c8 | 255 | url = xmalloc(strlen(base) + 50); |
6eb7ed54 DB |
256 | strcpy(url, base); |
257 | posn = url + strlen(base); | |
258 | strcpy(posn, "objects/"); | |
259 | posn += 8; | |
260 | memcpy(posn, hex, 2); | |
261 | posn += 2; | |
262 | *(posn++) = '/'; | |
263 | strcpy(posn, hex + 2); | |
264 | ||
265 | curl_easy_setopt(curl, CURLOPT_URL, url); | |
266 | ||
182005b9 DB |
267 | if (curl_easy_perform(curl)) { |
268 | unlink(filename); | |
269 | if (fetch_pack(sha1)) | |
270 | return error("Tried %s", url); | |
271 | return 0; | |
272 | } | |
6eb7ed54 DB |
273 | |
274 | close(local); | |
275 | inflateEnd(&stream); | |
276 | SHA1_Final(real_sha1, &c); | |
277 | if (zret != Z_STREAM_END) { | |
278 | unlink(filename); | |
279 | return error("File %s (%s) corrupt\n", hex, url); | |
280 | } | |
281 | if (memcmp(sha1, real_sha1, 20)) { | |
282 | unlink(filename); | |
283 | return error("File %s has bad hash\n", hex); | |
284 | } | |
285 | ||
e78d9772 | 286 | pull_say("got %s\n", hex); |
6eb7ed54 DB |
287 | return 0; |
288 | } | |
289 | ||
cd541a68 DB |
290 | int fetch_ref(char *ref, unsigned char *sha1) |
291 | { | |
fa3e0655 DB |
292 | char *url, *posn; |
293 | char hex[42]; | |
294 | struct buffer buffer; | |
295 | buffer.size = 41; | |
296 | buffer.posn = 0; | |
297 | buffer.buffer = hex; | |
298 | hex[41] = '\0'; | |
299 | ||
300 | curl_easy_setopt(curl, CURLOPT_FILE, &buffer); | |
301 | curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite_buffer); | |
302 | ||
303 | url = xmalloc(strlen(base) + 6 + strlen(ref)); | |
304 | strcpy(url, base); | |
305 | posn = url + strlen(base); | |
306 | strcpy(posn, "refs/"); | |
307 | posn += 5; | |
308 | strcpy(posn, ref); | |
309 | ||
310 | curl_easy_setopt(curl, CURLOPT_URL, url); | |
311 | ||
312 | if (curl_easy_perform(curl)) | |
313 | return error("Couldn't get %s for %s\n", url, ref); | |
314 | ||
315 | hex[40] = '\0'; | |
316 | get_sha1_hex(hex, sha1); | |
317 | return 0; | |
cd541a68 DB |
318 | } |
319 | ||
6eb7ed54 DB |
320 | int main(int argc, char **argv) |
321 | { | |
322 | char *commit_id; | |
323 | char *url; | |
324 | int arg = 1; | |
6eb7ed54 DB |
325 | |
326 | while (arg < argc && argv[arg][0] == '-') { | |
327 | if (argv[arg][1] == 't') { | |
4250a5e5 | 328 | get_tree = 1; |
6eb7ed54 | 329 | } else if (argv[arg][1] == 'c') { |
4250a5e5 | 330 | get_history = 1; |
6eb7ed54 | 331 | } else if (argv[arg][1] == 'a') { |
4250a5e5 DB |
332 | get_all = 1; |
333 | get_tree = 1; | |
334 | get_history = 1; | |
e78d9772 JH |
335 | } else if (argv[arg][1] == 'v') { |
336 | get_verbosely = 1; | |
fa3e0655 DB |
337 | } else if (argv[arg][1] == 'w') { |
338 | write_ref = argv[arg + 1]; | |
339 | arg++; | |
6eb7ed54 DB |
340 | } |
341 | arg++; | |
342 | } | |
343 | if (argc < arg + 2) { | |
fa3e0655 | 344 | usage("git-http-pull [-c] [-t] [-a] [-d] [-v] [--recover] [-w ref] commit-id url"); |
6eb7ed54 DB |
345 | return 1; |
346 | } | |
347 | commit_id = argv[arg]; | |
348 | url = argv[arg + 1]; | |
349 | ||
6eb7ed54 DB |
350 | curl_global_init(CURL_GLOBAL_ALL); |
351 | ||
352 | curl = curl_easy_init(); | |
353 | ||
3dcb90f5 DT |
354 | curl_ssl_verify = gitenv("GIT_SSL_NO_VERIFY") ? 0 : 1; |
355 | curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, curl_ssl_verify); | |
9f6cf65e | 356 | #if LIBCURL_VERSION_NUM >= 0x070907 |
3dcb90f5 | 357 | curl_easy_setopt(curl, CURLOPT_NETRC, CURL_NETRC_OPTIONAL); |
9f6cf65e | 358 | #endif |
3dcb90f5 | 359 | |
6eb7ed54 DB |
360 | base = url; |
361 | ||
4250a5e5 | 362 | if (pull(commit_id)) |
6eb7ed54 DB |
363 | return 1; |
364 | ||
365 | curl_global_cleanup(); | |
366 | return 0; | |
367 | } |