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Commit | Line | Data |
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29508e1e | 1 | #include "http.h" |
2264dfa5 | 2 | #include "pack.h" |
de1a2fdd | 3 | #include "sideband.h" |
fe72d420 | 4 | #include "run-command.h" |
f39f72d8 | 5 | #include "url.h" |
148bb6a7 | 6 | #include "credential.h" |
745c7c8e | 7 | #include "version.h" |
047ec602 | 8 | #include "pkt-line.h" |
29508e1e | 9 | |
4251ccbd | 10 | int active_requests; |
e9176745 | 11 | int http_is_verbose; |
de1a2fdd | 12 | size_t http_post_buffer = 16 * LARGE_PACKET_MAX; |
29508e1e | 13 | |
b8ac9230 MS |
14 | #if LIBCURL_VERSION_NUM >= 0x070a06 |
15 | #define LIBCURL_CAN_HANDLE_AUTH_ANY | |
16 | #endif | |
17 | ||
ad75ebe5 TRC |
18 | static int min_curl_sessions = 1; |
19 | static int curl_session_count; | |
29508e1e | 20 | #ifdef USE_CURL_MULTI |
cc3530e8 MH |
21 | static int max_requests = -1; |
22 | static CURLM *curlm; | |
29508e1e NH |
23 | #endif |
24 | #ifndef NO_CURL_EASY_DUPHANDLE | |
cc3530e8 | 25 | static CURL *curl_default; |
29508e1e | 26 | #endif |
5424bc55 TRC |
27 | |
28 | #define PREV_BUF_SIZE 4096 | |
29 | #define RANGE_HEADER_SIZE 30 | |
30 | ||
29508e1e NH |
31 | char curl_errorstr[CURL_ERROR_SIZE]; |
32 | ||
cc3530e8 | 33 | static int curl_ssl_verify = -1; |
4251ccbd | 34 | static const char *ssl_cert; |
ef52aafa | 35 | #if LIBCURL_VERSION_NUM >= 0x070903 |
4251ccbd | 36 | static const char *ssl_key; |
29508e1e NH |
37 | #endif |
38 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
4251ccbd | 39 | static const char *ssl_capath; |
29508e1e | 40 | #endif |
4251ccbd | 41 | static const char *ssl_cainfo; |
cc3530e8 MH |
42 | static long curl_low_speed_limit = -1; |
43 | static long curl_low_speed_time = -1; | |
4251ccbd JH |
44 | static int curl_ftp_no_epsv; |
45 | static const char *curl_http_proxy; | |
bcfb95dd | 46 | static const char *curl_cookie_file; |
148bb6a7 | 47 | static struct credential http_auth = CREDENTIAL_INIT; |
a4ddbc33 | 48 | static int http_proactive_auth; |
b1d1058c | 49 | static const char *user_agent; |
29508e1e | 50 | |
30dd9163 ML |
51 | #if LIBCURL_VERSION_NUM >= 0x071700 |
52 | /* Use CURLOPT_KEYPASSWD as is */ | |
53 | #elif LIBCURL_VERSION_NUM >= 0x070903 | |
54 | #define CURLOPT_KEYPASSWD CURLOPT_SSLKEYPASSWD | |
55 | #else | |
56 | #define CURLOPT_KEYPASSWD CURLOPT_SSLCERTPASSWD | |
57 | #endif | |
58 | ||
148bb6a7 | 59 | static struct credential cert_auth = CREDENTIAL_INIT; |
30dd9163 ML |
60 | static int ssl_cert_password_required; |
61 | ||
cc3530e8 | 62 | static struct curl_slist *pragma_header; |
5424bc55 | 63 | static struct curl_slist *no_pragma_header; |
e9176745 | 64 | |
4251ccbd | 65 | static struct active_request_slot *active_queue_head; |
29508e1e | 66 | |
a04ff3ec | 67 | size_t fread_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_) |
29508e1e NH |
68 | { |
69 | size_t size = eltsize * nmemb; | |
f444e528 JH |
70 | struct buffer *buffer = buffer_; |
71 | ||
028c2976 MH |
72 | if (size > buffer->buf.len - buffer->posn) |
73 | size = buffer->buf.len - buffer->posn; | |
74 | memcpy(ptr, buffer->buf.buf + buffer->posn, size); | |
29508e1e | 75 | buffer->posn += size; |
028c2976 | 76 | |
29508e1e NH |
77 | return size; |
78 | } | |
79 | ||
3944ba0c MS |
80 | #ifndef NO_CURL_IOCTL |
81 | curlioerr ioctl_buffer(CURL *handle, int cmd, void *clientp) | |
82 | { | |
83 | struct buffer *buffer = clientp; | |
84 | ||
85 | switch (cmd) { | |
86 | case CURLIOCMD_NOP: | |
87 | return CURLIOE_OK; | |
88 | ||
89 | case CURLIOCMD_RESTARTREAD: | |
90 | buffer->posn = 0; | |
91 | return CURLIOE_OK; | |
92 | ||
93 | default: | |
94 | return CURLIOE_UNKNOWNCMD; | |
95 | } | |
96 | } | |
97 | #endif | |
98 | ||
a04ff3ec | 99 | size_t fwrite_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_) |
29508e1e NH |
100 | { |
101 | size_t size = eltsize * nmemb; | |
f444e528 JH |
102 | struct strbuf *buffer = buffer_; |
103 | ||
028c2976 | 104 | strbuf_add(buffer, ptr, size); |
29508e1e NH |
105 | return size; |
106 | } | |
107 | ||
a04ff3ec | 108 | size_t fwrite_null(char *ptr, size_t eltsize, size_t nmemb, void *strbuf) |
29508e1e | 109 | { |
29508e1e NH |
110 | return eltsize * nmemb; |
111 | } | |
112 | ||
29508e1e NH |
113 | #ifdef USE_CURL_MULTI |
114 | static void process_curl_messages(void) | |
115 | { | |
116 | int num_messages; | |
117 | struct active_request_slot *slot; | |
118 | CURLMsg *curl_message = curl_multi_info_read(curlm, &num_messages); | |
119 | ||
120 | while (curl_message != NULL) { | |
121 | if (curl_message->msg == CURLMSG_DONE) { | |
122 | int curl_result = curl_message->data.result; | |
123 | slot = active_queue_head; | |
124 | while (slot != NULL && | |
125 | slot->curl != curl_message->easy_handle) | |
126 | slot = slot->next; | |
127 | if (slot != NULL) { | |
128 | curl_multi_remove_handle(curlm, slot->curl); | |
129 | slot->curl_result = curl_result; | |
130 | finish_active_slot(slot); | |
131 | } else { | |
132 | fprintf(stderr, "Received DONE message for unknown request!\n"); | |
133 | } | |
134 | } else { | |
135 | fprintf(stderr, "Unknown CURL message received: %d\n", | |
136 | (int)curl_message->msg); | |
137 | } | |
138 | curl_message = curl_multi_info_read(curlm, &num_messages); | |
139 | } | |
140 | } | |
141 | #endif | |
142 | ||
ef90d6d4 | 143 | static int http_options(const char *var, const char *value, void *cb) |
29508e1e NH |
144 | { |
145 | if (!strcmp("http.sslverify", var)) { | |
7059cd99 | 146 | curl_ssl_verify = git_config_bool(var, value); |
29508e1e NH |
147 | return 0; |
148 | } | |
7059cd99 JH |
149 | if (!strcmp("http.sslcert", var)) |
150 | return git_config_string(&ssl_cert, var, value); | |
ef52aafa | 151 | #if LIBCURL_VERSION_NUM >= 0x070903 |
7059cd99 JH |
152 | if (!strcmp("http.sslkey", var)) |
153 | return git_config_string(&ssl_key, var, value); | |
29508e1e NH |
154 | #endif |
155 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
7059cd99 JH |
156 | if (!strcmp("http.sslcapath", var)) |
157 | return git_config_string(&ssl_capath, var, value); | |
29508e1e | 158 | #endif |
7059cd99 JH |
159 | if (!strcmp("http.sslcainfo", var)) |
160 | return git_config_string(&ssl_cainfo, var, value); | |
754ae192 ML |
161 | if (!strcmp("http.sslcertpasswordprotected", var)) { |
162 | if (git_config_bool(var, value)) | |
163 | ssl_cert_password_required = 1; | |
164 | return 0; | |
165 | } | |
ad75ebe5 TRC |
166 | if (!strcmp("http.minsessions", var)) { |
167 | min_curl_sessions = git_config_int(var, value); | |
168 | #ifndef USE_CURL_MULTI | |
169 | if (min_curl_sessions > 1) | |
170 | min_curl_sessions = 1; | |
171 | #endif | |
172 | return 0; | |
173 | } | |
a6080a0a | 174 | #ifdef USE_CURL_MULTI |
29508e1e | 175 | if (!strcmp("http.maxrequests", var)) { |
7059cd99 | 176 | max_requests = git_config_int(var, value); |
29508e1e NH |
177 | return 0; |
178 | } | |
179 | #endif | |
29508e1e | 180 | if (!strcmp("http.lowspeedlimit", var)) { |
7059cd99 | 181 | curl_low_speed_limit = (long)git_config_int(var, value); |
29508e1e NH |
182 | return 0; |
183 | } | |
184 | if (!strcmp("http.lowspeedtime", var)) { | |
7059cd99 | 185 | curl_low_speed_time = (long)git_config_int(var, value); |
29508e1e NH |
186 | return 0; |
187 | } | |
188 | ||
3ea099d4 SK |
189 | if (!strcmp("http.noepsv", var)) { |
190 | curl_ftp_no_epsv = git_config_bool(var, value); | |
191 | return 0; | |
192 | } | |
7059cd99 JH |
193 | if (!strcmp("http.proxy", var)) |
194 | return git_config_string(&curl_http_proxy, var, value); | |
3ea099d4 | 195 | |
bcfb95dd DB |
196 | if (!strcmp("http.cookiefile", var)) |
197 | return git_config_string(&curl_cookie_file, var, value); | |
198 | ||
de1a2fdd SP |
199 | if (!strcmp("http.postbuffer", var)) { |
200 | http_post_buffer = git_config_int(var, value); | |
201 | if (http_post_buffer < LARGE_PACKET_MAX) | |
202 | http_post_buffer = LARGE_PACKET_MAX; | |
203 | return 0; | |
204 | } | |
205 | ||
b1d1058c SO |
206 | if (!strcmp("http.useragent", var)) |
207 | return git_config_string(&user_agent, var, value); | |
208 | ||
29508e1e | 209 | /* Fall back on the default ones */ |
ef90d6d4 | 210 | return git_default_config(var, value, cb); |
29508e1e NH |
211 | } |
212 | ||
c33976cb JH |
213 | static void init_curl_http_auth(CURL *result) |
214 | { | |
6f4c347c JK |
215 | if (!http_auth.username) |
216 | return; | |
217 | ||
218 | credential_fill(&http_auth); | |
219 | ||
220 | #if LIBCURL_VERSION_NUM >= 0x071301 | |
221 | curl_easy_setopt(result, CURLOPT_USERNAME, http_auth.username); | |
222 | curl_easy_setopt(result, CURLOPT_PASSWORD, http_auth.password); | |
223 | #else | |
224 | { | |
aa0834a0 | 225 | static struct strbuf up = STRBUF_INIT; |
aa0834a0 | 226 | strbuf_reset(&up); |
148bb6a7 JK |
227 | strbuf_addf(&up, "%s:%s", |
228 | http_auth.username, http_auth.password); | |
aa0834a0 | 229 | curl_easy_setopt(result, CURLOPT_USERPWD, up.buf); |
c33976cb | 230 | } |
6f4c347c | 231 | #endif |
c33976cb JH |
232 | } |
233 | ||
30dd9163 ML |
234 | static int has_cert_password(void) |
235 | { | |
30dd9163 ML |
236 | if (ssl_cert == NULL || ssl_cert_password_required != 1) |
237 | return 0; | |
148bb6a7 JK |
238 | if (!cert_auth.password) { |
239 | cert_auth.protocol = xstrdup("cert"); | |
75e9a405 | 240 | cert_auth.username = xstrdup(""); |
148bb6a7 JK |
241 | cert_auth.path = xstrdup(ssl_cert); |
242 | credential_fill(&cert_auth); | |
243 | } | |
244 | return 1; | |
30dd9163 ML |
245 | } |
246 | ||
4251ccbd | 247 | static CURL *get_curl_handle(void) |
11979b98 | 248 | { |
4251ccbd | 249 | CURL *result = curl_easy_init(); |
11979b98 | 250 | |
a5ccc597 JH |
251 | if (!curl_ssl_verify) { |
252 | curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 0); | |
253 | curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 0); | |
254 | } else { | |
255 | /* Verify authenticity of the peer's certificate */ | |
256 | curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 1); | |
257 | /* The name in the cert must match whom we tried to connect */ | |
258 | curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 2); | |
259 | } | |
260 | ||
11979b98 JH |
261 | #if LIBCURL_VERSION_NUM >= 0x070907 |
262 | curl_easy_setopt(result, CURLOPT_NETRC, CURL_NETRC_OPTIONAL); | |
263 | #endif | |
b8ac9230 | 264 | #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY |
525ecd26 | 265 | curl_easy_setopt(result, CURLOPT_HTTPAUTH, CURLAUTH_ANY); |
b8ac9230 | 266 | #endif |
11979b98 | 267 | |
a4ddbc33 JK |
268 | if (http_proactive_auth) |
269 | init_curl_http_auth(result); | |
270 | ||
11979b98 JH |
271 | if (ssl_cert != NULL) |
272 | curl_easy_setopt(result, CURLOPT_SSLCERT, ssl_cert); | |
30dd9163 | 273 | if (has_cert_password()) |
148bb6a7 | 274 | curl_easy_setopt(result, CURLOPT_KEYPASSWD, cert_auth.password); |
ef52aafa | 275 | #if LIBCURL_VERSION_NUM >= 0x070903 |
11979b98 JH |
276 | if (ssl_key != NULL) |
277 | curl_easy_setopt(result, CURLOPT_SSLKEY, ssl_key); | |
278 | #endif | |
279 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
280 | if (ssl_capath != NULL) | |
281 | curl_easy_setopt(result, CURLOPT_CAPATH, ssl_capath); | |
282 | #endif | |
283 | if (ssl_cainfo != NULL) | |
284 | curl_easy_setopt(result, CURLOPT_CAINFO, ssl_cainfo); | |
11979b98 JH |
285 | |
286 | if (curl_low_speed_limit > 0 && curl_low_speed_time > 0) { | |
287 | curl_easy_setopt(result, CURLOPT_LOW_SPEED_LIMIT, | |
288 | curl_low_speed_limit); | |
289 | curl_easy_setopt(result, CURLOPT_LOW_SPEED_TIME, | |
290 | curl_low_speed_time); | |
291 | } | |
292 | ||
293 | curl_easy_setopt(result, CURLOPT_FOLLOWLOCATION, 1); | |
311e2ea0 TRC |
294 | #if LIBCURL_VERSION_NUM >= 0x071301 |
295 | curl_easy_setopt(result, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL); | |
296 | #elif LIBCURL_VERSION_NUM >= 0x071101 | |
297 | curl_easy_setopt(result, CURLOPT_POST301, 1); | |
298 | #endif | |
11979b98 | 299 | |
7982d74e MW |
300 | if (getenv("GIT_CURL_VERBOSE")) |
301 | curl_easy_setopt(result, CURLOPT_VERBOSE, 1); | |
302 | ||
b1d1058c | 303 | curl_easy_setopt(result, CURLOPT_USERAGENT, |
745c7c8e | 304 | user_agent ? user_agent : git_user_agent()); |
20fc9bc5 | 305 | |
3ea099d4 SK |
306 | if (curl_ftp_no_epsv) |
307 | curl_easy_setopt(result, CURLOPT_FTP_USE_EPSV, 0); | |
308 | ||
dd613997 | 309 | if (curl_http_proxy) { |
9c5665aa | 310 | curl_easy_setopt(result, CURLOPT_PROXY, curl_http_proxy); |
dd613997 NBL |
311 | curl_easy_setopt(result, CURLOPT_PROXYAUTH, CURLAUTH_ANY); |
312 | } | |
9c5665aa | 313 | |
11979b98 JH |
314 | return result; |
315 | } | |
316 | ||
7059cd99 JH |
317 | static void set_from_env(const char **var, const char *envname) |
318 | { | |
319 | const char *val = getenv(envname); | |
320 | if (val) | |
321 | *var = val; | |
322 | } | |
323 | ||
a4ddbc33 | 324 | void http_init(struct remote *remote, const char *url, int proactive_auth) |
29508e1e NH |
325 | { |
326 | char *low_speed_limit; | |
327 | char *low_speed_time; | |
328 | ||
e9176745 TRC |
329 | http_is_verbose = 0; |
330 | ||
7059cd99 JH |
331 | git_config(http_options, NULL); |
332 | ||
29508e1e NH |
333 | curl_global_init(CURL_GLOBAL_ALL); |
334 | ||
a4ddbc33 JK |
335 | http_proactive_auth = proactive_auth; |
336 | ||
9fc6440d MH |
337 | if (remote && remote->http_proxy) |
338 | curl_http_proxy = xstrdup(remote->http_proxy); | |
339 | ||
29508e1e | 340 | pragma_header = curl_slist_append(pragma_header, "Pragma: no-cache"); |
e9176745 | 341 | no_pragma_header = curl_slist_append(no_pragma_header, "Pragma:"); |
29508e1e NH |
342 | |
343 | #ifdef USE_CURL_MULTI | |
344 | { | |
345 | char *http_max_requests = getenv("GIT_HTTP_MAX_REQUESTS"); | |
346 | if (http_max_requests != NULL) | |
347 | max_requests = atoi(http_max_requests); | |
348 | } | |
349 | ||
350 | curlm = curl_multi_init(); | |
351 | if (curlm == NULL) { | |
352 | fprintf(stderr, "Error creating curl multi handle.\n"); | |
353 | exit(1); | |
354 | } | |
355 | #endif | |
356 | ||
357 | if (getenv("GIT_SSL_NO_VERIFY")) | |
358 | curl_ssl_verify = 0; | |
359 | ||
7059cd99 | 360 | set_from_env(&ssl_cert, "GIT_SSL_CERT"); |
ef52aafa | 361 | #if LIBCURL_VERSION_NUM >= 0x070903 |
7059cd99 | 362 | set_from_env(&ssl_key, "GIT_SSL_KEY"); |
29508e1e NH |
363 | #endif |
364 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
7059cd99 | 365 | set_from_env(&ssl_capath, "GIT_SSL_CAPATH"); |
29508e1e | 366 | #endif |
7059cd99 | 367 | set_from_env(&ssl_cainfo, "GIT_SSL_CAINFO"); |
29508e1e | 368 | |
b1d1058c SO |
369 | set_from_env(&user_agent, "GIT_HTTP_USER_AGENT"); |
370 | ||
29508e1e NH |
371 | low_speed_limit = getenv("GIT_HTTP_LOW_SPEED_LIMIT"); |
372 | if (low_speed_limit != NULL) | |
373 | curl_low_speed_limit = strtol(low_speed_limit, NULL, 10); | |
374 | low_speed_time = getenv("GIT_HTTP_LOW_SPEED_TIME"); | |
375 | if (low_speed_time != NULL) | |
376 | curl_low_speed_time = strtol(low_speed_time, NULL, 10); | |
377 | ||
29508e1e NH |
378 | if (curl_ssl_verify == -1) |
379 | curl_ssl_verify = 1; | |
380 | ||
ad75ebe5 | 381 | curl_session_count = 0; |
29508e1e NH |
382 | #ifdef USE_CURL_MULTI |
383 | if (max_requests < 1) | |
384 | max_requests = DEFAULT_MAX_REQUESTS; | |
385 | #endif | |
386 | ||
3ea099d4 SK |
387 | if (getenv("GIT_CURL_FTP_NO_EPSV")) |
388 | curl_ftp_no_epsv = 1; | |
389 | ||
deba4937 | 390 | if (url) { |
148bb6a7 | 391 | credential_from_url(&http_auth, url); |
754ae192 ML |
392 | if (!ssl_cert_password_required && |
393 | getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") && | |
deba4937 | 394 | !prefixcmp(url, "https://")) |
30dd9163 ML |
395 | ssl_cert_password_required = 1; |
396 | } | |
c33976cb | 397 | |
29508e1e NH |
398 | #ifndef NO_CURL_EASY_DUPHANDLE |
399 | curl_default = get_curl_handle(); | |
400 | #endif | |
401 | } | |
402 | ||
403 | void http_cleanup(void) | |
404 | { | |
405 | struct active_request_slot *slot = active_queue_head; | |
29508e1e NH |
406 | |
407 | while (slot != NULL) { | |
3278cd0a | 408 | struct active_request_slot *next = slot->next; |
f23d1f76 | 409 | if (slot->curl != NULL) { |
29508e1e | 410 | #ifdef USE_CURL_MULTI |
f23d1f76 | 411 | curl_multi_remove_handle(curlm, slot->curl); |
29508e1e | 412 | #endif |
29508e1e | 413 | curl_easy_cleanup(slot->curl); |
f23d1f76 | 414 | } |
3278cd0a SP |
415 | free(slot); |
416 | slot = next; | |
29508e1e | 417 | } |
3278cd0a | 418 | active_queue_head = NULL; |
29508e1e NH |
419 | |
420 | #ifndef NO_CURL_EASY_DUPHANDLE | |
421 | curl_easy_cleanup(curl_default); | |
422 | #endif | |
423 | ||
424 | #ifdef USE_CURL_MULTI | |
425 | curl_multi_cleanup(curlm); | |
426 | #endif | |
427 | curl_global_cleanup(); | |
b3ca4e4e NH |
428 | |
429 | curl_slist_free_all(pragma_header); | |
3278cd0a | 430 | pragma_header = NULL; |
9fc6440d | 431 | |
e9176745 TRC |
432 | curl_slist_free_all(no_pragma_header); |
433 | no_pragma_header = NULL; | |
434 | ||
9fc6440d | 435 | if (curl_http_proxy) { |
e4a80ecf | 436 | free((void *)curl_http_proxy); |
9fc6440d MH |
437 | curl_http_proxy = NULL; |
438 | } | |
30dd9163 | 439 | |
148bb6a7 JK |
440 | if (cert_auth.password != NULL) { |
441 | memset(cert_auth.password, 0, strlen(cert_auth.password)); | |
442 | free(cert_auth.password); | |
443 | cert_auth.password = NULL; | |
30dd9163 ML |
444 | } |
445 | ssl_cert_password_required = 0; | |
29508e1e NH |
446 | } |
447 | ||
29508e1e NH |
448 | struct active_request_slot *get_active_slot(void) |
449 | { | |
450 | struct active_request_slot *slot = active_queue_head; | |
451 | struct active_request_slot *newslot; | |
452 | ||
453 | #ifdef USE_CURL_MULTI | |
454 | int num_transfers; | |
455 | ||
456 | /* Wait for a slot to open up if the queue is full */ | |
457 | while (active_requests >= max_requests) { | |
458 | curl_multi_perform(curlm, &num_transfers); | |
4251ccbd | 459 | if (num_transfers < active_requests) |
29508e1e | 460 | process_curl_messages(); |
29508e1e NH |
461 | } |
462 | #endif | |
463 | ||
4251ccbd | 464 | while (slot != NULL && slot->in_use) |
29508e1e | 465 | slot = slot->next; |
4251ccbd | 466 | |
29508e1e NH |
467 | if (slot == NULL) { |
468 | newslot = xmalloc(sizeof(*newslot)); | |
469 | newslot->curl = NULL; | |
470 | newslot->in_use = 0; | |
471 | newslot->next = NULL; | |
472 | ||
473 | slot = active_queue_head; | |
474 | if (slot == NULL) { | |
475 | active_queue_head = newslot; | |
476 | } else { | |
4251ccbd | 477 | while (slot->next != NULL) |
29508e1e | 478 | slot = slot->next; |
29508e1e NH |
479 | slot->next = newslot; |
480 | } | |
481 | slot = newslot; | |
482 | } | |
483 | ||
484 | if (slot->curl == NULL) { | |
485 | #ifdef NO_CURL_EASY_DUPHANDLE | |
486 | slot->curl = get_curl_handle(); | |
487 | #else | |
488 | slot->curl = curl_easy_duphandle(curl_default); | |
489 | #endif | |
ad75ebe5 | 490 | curl_session_count++; |
29508e1e NH |
491 | } |
492 | ||
493 | active_requests++; | |
494 | slot->in_use = 1; | |
c8568e13 | 495 | slot->results = NULL; |
baa7b67d | 496 | slot->finished = NULL; |
29508e1e NH |
497 | slot->callback_data = NULL; |
498 | slot->callback_func = NULL; | |
bcfb95dd | 499 | curl_easy_setopt(slot->curl, CURLOPT_COOKIEFILE, curl_cookie_file); |
29508e1e | 500 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, pragma_header); |
29508e1e | 501 | curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, curl_errorstr); |
9094950d NH |
502 | curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, NULL); |
503 | curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, NULL); | |
504 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, NULL); | |
1e41827d | 505 | curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, NULL); |
9094950d NH |
506 | curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 0); |
507 | curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1); | |
b793acf1 | 508 | curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 1); |
dfa1725a JK |
509 | if (http_auth.password) |
510 | init_curl_http_auth(slot->curl); | |
29508e1e NH |
511 | |
512 | return slot; | |
513 | } | |
514 | ||
515 | int start_active_slot(struct active_request_slot *slot) | |
516 | { | |
517 | #ifdef USE_CURL_MULTI | |
518 | CURLMcode curlm_result = curl_multi_add_handle(curlm, slot->curl); | |
45c17412 | 519 | int num_transfers; |
29508e1e NH |
520 | |
521 | if (curlm_result != CURLM_OK && | |
522 | curlm_result != CURLM_CALL_MULTI_PERFORM) { | |
523 | active_requests--; | |
524 | slot->in_use = 0; | |
525 | return 0; | |
526 | } | |
45c17412 DB |
527 | |
528 | /* | |
529 | * We know there must be something to do, since we just added | |
530 | * something. | |
531 | */ | |
532 | curl_multi_perform(curlm, &num_transfers); | |
29508e1e NH |
533 | #endif |
534 | return 1; | |
535 | } | |
536 | ||
537 | #ifdef USE_CURL_MULTI | |
fc57b6aa DB |
538 | struct fill_chain { |
539 | void *data; | |
540 | int (*fill)(void *); | |
541 | struct fill_chain *next; | |
542 | }; | |
543 | ||
4251ccbd | 544 | static struct fill_chain *fill_cfg; |
fc57b6aa DB |
545 | |
546 | void add_fill_function(void *data, int (*fill)(void *)) | |
547 | { | |
e8eec71d | 548 | struct fill_chain *new = xmalloc(sizeof(*new)); |
fc57b6aa DB |
549 | struct fill_chain **linkp = &fill_cfg; |
550 | new->data = data; | |
551 | new->fill = fill; | |
552 | new->next = NULL; | |
553 | while (*linkp) | |
554 | linkp = &(*linkp)->next; | |
555 | *linkp = new; | |
556 | } | |
557 | ||
45c17412 DB |
558 | void fill_active_slots(void) |
559 | { | |
560 | struct active_request_slot *slot = active_queue_head; | |
561 | ||
fc57b6aa DB |
562 | while (active_requests < max_requests) { |
563 | struct fill_chain *fill; | |
564 | for (fill = fill_cfg; fill; fill = fill->next) | |
565 | if (fill->fill(fill->data)) | |
566 | break; | |
567 | ||
568 | if (!fill) | |
45c17412 | 569 | break; |
fc57b6aa | 570 | } |
45c17412 DB |
571 | |
572 | while (slot != NULL) { | |
ad75ebe5 TRC |
573 | if (!slot->in_use && slot->curl != NULL |
574 | && curl_session_count > min_curl_sessions) { | |
45c17412 DB |
575 | curl_easy_cleanup(slot->curl); |
576 | slot->curl = NULL; | |
ad75ebe5 | 577 | curl_session_count--; |
45c17412 DB |
578 | } |
579 | slot = slot->next; | |
580 | } | |
581 | } | |
582 | ||
29508e1e NH |
583 | void step_active_slots(void) |
584 | { | |
585 | int num_transfers; | |
586 | CURLMcode curlm_result; | |
587 | ||
588 | do { | |
589 | curlm_result = curl_multi_perform(curlm, &num_transfers); | |
590 | } while (curlm_result == CURLM_CALL_MULTI_PERFORM); | |
591 | if (num_transfers < active_requests) { | |
592 | process_curl_messages(); | |
593 | fill_active_slots(); | |
594 | } | |
595 | } | |
596 | #endif | |
597 | ||
598 | void run_active_slot(struct active_request_slot *slot) | |
599 | { | |
600 | #ifdef USE_CURL_MULTI | |
29508e1e NH |
601 | fd_set readfds; |
602 | fd_set writefds; | |
603 | fd_set excfds; | |
604 | int max_fd; | |
605 | struct timeval select_timeout; | |
baa7b67d | 606 | int finished = 0; |
29508e1e | 607 | |
baa7b67d NH |
608 | slot->finished = &finished; |
609 | while (!finished) { | |
29508e1e NH |
610 | step_active_slots(); |
611 | ||
df26c471 | 612 | if (slot->in_use) { |
eb56c821 MF |
613 | #if LIBCURL_VERSION_NUM >= 0x070f04 |
614 | long curl_timeout; | |
615 | curl_multi_timeout(curlm, &curl_timeout); | |
616 | if (curl_timeout == 0) { | |
617 | continue; | |
618 | } else if (curl_timeout == -1) { | |
619 | select_timeout.tv_sec = 0; | |
620 | select_timeout.tv_usec = 50000; | |
621 | } else { | |
622 | select_timeout.tv_sec = curl_timeout / 1000; | |
623 | select_timeout.tv_usec = (curl_timeout % 1000) * 1000; | |
624 | } | |
625 | #else | |
626 | select_timeout.tv_sec = 0; | |
627 | select_timeout.tv_usec = 50000; | |
628 | #endif | |
29508e1e | 629 | |
6f9dd67f | 630 | max_fd = -1; |
29508e1e NH |
631 | FD_ZERO(&readfds); |
632 | FD_ZERO(&writefds); | |
633 | FD_ZERO(&excfds); | |
6f9dd67f | 634 | curl_multi_fdset(curlm, &readfds, &writefds, &excfds, &max_fd); |
eb56c821 | 635 | |
7202b81f SZ |
636 | /* |
637 | * It can happen that curl_multi_timeout returns a pathologically | |
638 | * long timeout when curl_multi_fdset returns no file descriptors | |
639 | * to read. See commit message for more details. | |
640 | */ | |
641 | if (max_fd < 0 && | |
642 | (select_timeout.tv_sec > 0 || | |
643 | select_timeout.tv_usec > 50000)) { | |
644 | select_timeout.tv_sec = 0; | |
645 | select_timeout.tv_usec = 50000; | |
646 | } | |
647 | ||
6f9dd67f | 648 | select(max_fd+1, &readfds, &writefds, &excfds, &select_timeout); |
29508e1e NH |
649 | } |
650 | } | |
651 | #else | |
652 | while (slot->in_use) { | |
653 | slot->curl_result = curl_easy_perform(slot->curl); | |
654 | finish_active_slot(slot); | |
655 | } | |
656 | #endif | |
657 | } | |
658 | ||
53f31389 | 659 | static void closedown_active_slot(struct active_request_slot *slot) |
29508e1e | 660 | { |
028c2976 MH |
661 | active_requests--; |
662 | slot->in_use = 0; | |
53f31389 MW |
663 | } |
664 | ||
83e41e2e | 665 | static void release_active_slot(struct active_request_slot *slot) |
53f31389 MW |
666 | { |
667 | closedown_active_slot(slot); | |
ad75ebe5 | 668 | if (slot->curl && curl_session_count > min_curl_sessions) { |
b3ca4e4e | 669 | #ifdef USE_CURL_MULTI |
53f31389 | 670 | curl_multi_remove_handle(curlm, slot->curl); |
b3ca4e4e | 671 | #endif |
53f31389 MW |
672 | curl_easy_cleanup(slot->curl); |
673 | slot->curl = NULL; | |
ad75ebe5 | 674 | curl_session_count--; |
53f31389 | 675 | } |
b3ca4e4e | 676 | #ifdef USE_CURL_MULTI |
53f31389 | 677 | fill_active_slots(); |
b3ca4e4e | 678 | #endif |
53f31389 MW |
679 | } |
680 | ||
de1a2fdd | 681 | void finish_active_slot(struct active_request_slot *slot) |
53f31389 MW |
682 | { |
683 | closedown_active_slot(slot); | |
028c2976 | 684 | curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CODE, &slot->http_code); |
c8568e13 | 685 | |
baa7b67d NH |
686 | if (slot->finished != NULL) |
687 | (*slot->finished) = 1; | |
688 | ||
c8568e13 NH |
689 | /* Store slot results so they can be read after the slot is reused */ |
690 | if (slot->results != NULL) { | |
691 | slot->results->curl_result = slot->curl_result; | |
692 | slot->results->http_code = slot->http_code; | |
693 | } | |
694 | ||
028c2976 | 695 | /* Run callback if appropriate */ |
4251ccbd | 696 | if (slot->callback_func != NULL) |
028c2976 | 697 | slot->callback_func(slot->callback_data); |
29508e1e NH |
698 | } |
699 | ||
700 | void finish_all_active_slots(void) | |
701 | { | |
702 | struct active_request_slot *slot = active_queue_head; | |
703 | ||
704 | while (slot != NULL) | |
705 | if (slot->in_use) { | |
706 | run_active_slot(slot); | |
707 | slot = active_queue_head; | |
708 | } else { | |
709 | slot = slot->next; | |
710 | } | |
711 | } | |
d7e92806 | 712 | |
5ace994f | 713 | /* Helpers for modifying and creating URLs */ |
d7e92806 MH |
714 | static inline int needs_quote(int ch) |
715 | { | |
716 | if (((ch >= 'A') && (ch <= 'Z')) | |
717 | || ((ch >= 'a') && (ch <= 'z')) | |
718 | || ((ch >= '0') && (ch <= '9')) | |
719 | || (ch == '/') | |
720 | || (ch == '-') | |
721 | || (ch == '.')) | |
722 | return 0; | |
723 | return 1; | |
724 | } | |
725 | ||
d7e92806 MH |
726 | static char *quote_ref_url(const char *base, const char *ref) |
727 | { | |
113106e0 | 728 | struct strbuf buf = STRBUF_INIT; |
d7e92806 | 729 | const char *cp; |
113106e0 | 730 | int ch; |
d7e92806 | 731 | |
5ace994f | 732 | end_url_with_slash(&buf, base); |
113106e0 TRC |
733 | |
734 | for (cp = ref; (ch = *cp) != 0; cp++) | |
d7e92806 | 735 | if (needs_quote(ch)) |
113106e0 | 736 | strbuf_addf(&buf, "%%%02x", ch); |
d7e92806 | 737 | else |
113106e0 | 738 | strbuf_addch(&buf, *cp); |
d7e92806 | 739 | |
113106e0 | 740 | return strbuf_detach(&buf, NULL); |
d7e92806 MH |
741 | } |
742 | ||
5424bc55 TRC |
743 | void append_remote_object_url(struct strbuf *buf, const char *url, |
744 | const char *hex, | |
745 | int only_two_digit_prefix) | |
746 | { | |
800324c3 TRC |
747 | end_url_with_slash(buf, url); |
748 | ||
749 | strbuf_addf(buf, "objects/%.*s/", 2, hex); | |
5424bc55 TRC |
750 | if (!only_two_digit_prefix) |
751 | strbuf_addf(buf, "%s", hex+2); | |
752 | } | |
753 | ||
754 | char *get_remote_object_url(const char *url, const char *hex, | |
755 | int only_two_digit_prefix) | |
756 | { | |
757 | struct strbuf buf = STRBUF_INIT; | |
758 | append_remote_object_url(&buf, url, hex, only_two_digit_prefix); | |
759 | return strbuf_detach(&buf, NULL); | |
760 | } | |
761 | ||
1960897e | 762 | int handle_curl_result(struct slot_results *results) |
88097030 | 763 | { |
6d052d78 JK |
764 | /* |
765 | * If we see a failing http code with CURLE_OK, we have turned off | |
766 | * FAILONERROR (to keep the server's custom error response), and should | |
767 | * translate the code into failure here. | |
768 | */ | |
769 | if (results->curl_result == CURLE_OK && | |
770 | results->http_code >= 400) { | |
771 | results->curl_result = CURLE_HTTP_RETURNED_ERROR; | |
772 | /* | |
773 | * Normally curl will already have put the "reason phrase" | |
774 | * from the server into curl_errorstr; unfortunately without | |
775 | * FAILONERROR it is lost, so we can give only the numeric | |
776 | * status code. | |
777 | */ | |
778 | snprintf(curl_errorstr, sizeof(curl_errorstr), | |
779 | "The requested URL returned error: %ld", | |
780 | results->http_code); | |
781 | } | |
782 | ||
88097030 JK |
783 | if (results->curl_result == CURLE_OK) { |
784 | credential_approve(&http_auth); | |
785 | return HTTP_OK; | |
786 | } else if (missing_target(results)) | |
787 | return HTTP_MISSING_TARGET; | |
788 | else if (results->http_code == 401) { | |
789 | if (http_auth.username && http_auth.password) { | |
790 | credential_reject(&http_auth); | |
791 | return HTTP_NOAUTH; | |
792 | } else { | |
793 | credential_fill(&http_auth); | |
88097030 JK |
794 | return HTTP_REAUTH; |
795 | } | |
796 | } else { | |
3503e9ab | 797 | #if LIBCURL_VERSION_NUM >= 0x070c00 |
88097030 JK |
798 | if (!curl_errorstr[0]) |
799 | strlcpy(curl_errorstr, | |
800 | curl_easy_strerror(results->curl_result), | |
801 | sizeof(curl_errorstr)); | |
3503e9ab | 802 | #endif |
88097030 JK |
803 | return HTTP_ERROR; |
804 | } | |
805 | } | |
806 | ||
e929cd20 MH |
807 | /* http_request() targets */ |
808 | #define HTTP_REQUEST_STRBUF 0 | |
809 | #define HTTP_REQUEST_FILE 1 | |
810 | ||
4656bf47 SP |
811 | static int http_request(const char *url, struct strbuf *type, |
812 | void *result, int target, int options) | |
e929cd20 MH |
813 | { |
814 | struct active_request_slot *slot; | |
815 | struct slot_results results; | |
816 | struct curl_slist *headers = NULL; | |
817 | struct strbuf buf = STRBUF_INIT; | |
818 | int ret; | |
819 | ||
820 | slot = get_active_slot(); | |
821 | slot->results = &results; | |
822 | curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1); | |
823 | ||
824 | if (result == NULL) { | |
825 | curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 1); | |
826 | } else { | |
827 | curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0); | |
828 | curl_easy_setopt(slot->curl, CURLOPT_FILE, result); | |
829 | ||
830 | if (target == HTTP_REQUEST_FILE) { | |
831 | long posn = ftell(result); | |
832 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, | |
833 | fwrite); | |
834 | if (posn > 0) { | |
835 | strbuf_addf(&buf, "Range: bytes=%ld-", posn); | |
836 | headers = curl_slist_append(headers, buf.buf); | |
837 | strbuf_reset(&buf); | |
838 | } | |
e929cd20 MH |
839 | } else |
840 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, | |
841 | fwrite_buffer); | |
842 | } | |
843 | ||
844 | strbuf_addstr(&buf, "Pragma:"); | |
845 | if (options & HTTP_NO_CACHE) | |
846 | strbuf_addstr(&buf, " no-cache"); | |
6d052d78 JK |
847 | if (options & HTTP_KEEP_ERROR) |
848 | curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 0); | |
e929cd20 MH |
849 | |
850 | headers = curl_slist_append(headers, buf.buf); | |
851 | ||
852 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
853 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers); | |
aa90b969 | 854 | curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "gzip"); |
e929cd20 MH |
855 | |
856 | if (start_active_slot(slot)) { | |
857 | run_active_slot(slot); | |
1960897e | 858 | ret = handle_curl_result(&results); |
e929cd20 | 859 | } else { |
67d2a7b5 JK |
860 | snprintf(curl_errorstr, sizeof(curl_errorstr), |
861 | "failed to start HTTP request"); | |
e929cd20 MH |
862 | ret = HTTP_START_FAILED; |
863 | } | |
864 | ||
4656bf47 SP |
865 | if (type) { |
866 | char *t; | |
3443db51 | 867 | strbuf_reset(type); |
4656bf47 SP |
868 | curl_easy_getinfo(slot->curl, CURLINFO_CONTENT_TYPE, &t); |
869 | if (t) | |
870 | strbuf_addstr(type, t); | |
871 | } | |
872 | ||
e929cd20 MH |
873 | curl_slist_free_all(headers); |
874 | strbuf_release(&buf); | |
875 | ||
876 | return ret; | |
877 | } | |
878 | ||
4656bf47 SP |
879 | static int http_request_reauth(const char *url, |
880 | struct strbuf *type, | |
881 | void *result, int target, | |
8d677edc JK |
882 | int options) |
883 | { | |
4656bf47 | 884 | int ret = http_request(url, type, result, target, options); |
8d677edc JK |
885 | if (ret != HTTP_REAUTH) |
886 | return ret; | |
6d052d78 JK |
887 | |
888 | /* | |
889 | * If we are using KEEP_ERROR, the previous request may have | |
890 | * put cruft into our output stream; we should clear it out before | |
891 | * making our next request. We only know how to do this for | |
892 | * the strbuf case, but that is enough to satisfy current callers. | |
893 | */ | |
894 | if (options & HTTP_KEEP_ERROR) { | |
895 | switch (target) { | |
896 | case HTTP_REQUEST_STRBUF: | |
897 | strbuf_reset(result); | |
898 | break; | |
899 | default: | |
900 | die("BUG: HTTP_KEEP_ERROR is only supported with strbufs"); | |
901 | } | |
902 | } | |
4656bf47 | 903 | return http_request(url, type, result, target, options); |
8d677edc JK |
904 | } |
905 | ||
4656bf47 SP |
906 | int http_get_strbuf(const char *url, |
907 | struct strbuf *type, | |
908 | struct strbuf *result, int options) | |
e929cd20 | 909 | { |
4656bf47 SP |
910 | return http_request_reauth(url, type, result, |
911 | HTTP_REQUEST_STRBUF, options); | |
e929cd20 MH |
912 | } |
913 | ||
83e41e2e | 914 | /* |
a7793a74 | 915 | * Downloads a URL and stores the result in the given file. |
83e41e2e JH |
916 | * |
917 | * If a previous interrupted download is detected (i.e. a previous temporary | |
918 | * file is still around) the download is resumed. | |
919 | */ | |
920 | static int http_get_file(const char *url, const char *filename, int options) | |
e929cd20 MH |
921 | { |
922 | int ret; | |
923 | struct strbuf tmpfile = STRBUF_INIT; | |
924 | FILE *result; | |
925 | ||
926 | strbuf_addf(&tmpfile, "%s.temp", filename); | |
927 | result = fopen(tmpfile.buf, "a"); | |
928 | if (! result) { | |
929 | error("Unable to open local file %s", tmpfile.buf); | |
930 | ret = HTTP_ERROR; | |
931 | goto cleanup; | |
932 | } | |
933 | ||
4656bf47 | 934 | ret = http_request_reauth(url, NULL, result, HTTP_REQUEST_FILE, options); |
e929cd20 MH |
935 | fclose(result); |
936 | ||
937 | if ((ret == HTTP_OK) && move_temp_to_file(tmpfile.buf, filename)) | |
938 | ret = HTTP_ERROR; | |
939 | cleanup: | |
940 | strbuf_release(&tmpfile); | |
941 | return ret; | |
942 | } | |
943 | ||
c13b2633 | 944 | int http_fetch_ref(const char *base, struct ref *ref) |
d7e92806 MH |
945 | { |
946 | char *url; | |
947 | struct strbuf buffer = STRBUF_INIT; | |
0d5896e1 | 948 | int ret = -1; |
d7e92806 | 949 | |
c13b2633 | 950 | url = quote_ref_url(base, ref->name); |
4656bf47 | 951 | if (http_get_strbuf(url, NULL, &buffer, HTTP_NO_CACHE) == HTTP_OK) { |
0d5896e1 MH |
952 | strbuf_rtrim(&buffer); |
953 | if (buffer.len == 40) | |
954 | ret = get_sha1_hex(buffer.buf, ref->old_sha1); | |
955 | else if (!prefixcmp(buffer.buf, "ref: ")) { | |
956 | ref->symref = xstrdup(buffer.buf + 5); | |
957 | ret = 0; | |
d7e92806 | 958 | } |
d7e92806 MH |
959 | } |
960 | ||
961 | strbuf_release(&buffer); | |
962 | free(url); | |
963 | return ret; | |
964 | } | |
b8caac2b TRC |
965 | |
966 | /* Helpers for fetching packs */ | |
750ef425 | 967 | static char *fetch_pack_index(unsigned char *sha1, const char *base_url) |
b8caac2b | 968 | { |
750ef425 | 969 | char *url, *tmp; |
b8caac2b | 970 | struct strbuf buf = STRBUF_INIT; |
b8caac2b | 971 | |
b8caac2b | 972 | if (http_is_verbose) |
162eb5f8 | 973 | fprintf(stderr, "Getting index for pack %s\n", sha1_to_hex(sha1)); |
b8caac2b TRC |
974 | |
975 | end_url_with_slash(&buf, base_url); | |
162eb5f8 | 976 | strbuf_addf(&buf, "objects/pack/pack-%s.idx", sha1_to_hex(sha1)); |
b8caac2b TRC |
977 | url = strbuf_detach(&buf, NULL); |
978 | ||
750ef425 SP |
979 | strbuf_addf(&buf, "%s.temp", sha1_pack_index_name(sha1)); |
980 | tmp = strbuf_detach(&buf, NULL); | |
981 | ||
982 | if (http_get_file(url, tmp, 0) != HTTP_OK) { | |
82247e9b | 983 | error("Unable to get pack index %s", url); |
750ef425 SP |
984 | free(tmp); |
985 | tmp = NULL; | |
986 | } | |
b8caac2b | 987 | |
b8caac2b | 988 | free(url); |
750ef425 | 989 | return tmp; |
b8caac2b TRC |
990 | } |
991 | ||
992 | static int fetch_and_setup_pack_index(struct packed_git **packs_head, | |
993 | unsigned char *sha1, const char *base_url) | |
994 | { | |
995 | struct packed_git *new_pack; | |
750ef425 SP |
996 | char *tmp_idx = NULL; |
997 | int ret; | |
b8caac2b | 998 | |
750ef425 SP |
999 | if (has_pack_index(sha1)) { |
1000 | new_pack = parse_pack_index(sha1, NULL); | |
1001 | if (!new_pack) | |
1002 | return -1; /* parse_pack_index() already issued error message */ | |
1003 | goto add_pack; | |
1004 | } | |
1005 | ||
1006 | tmp_idx = fetch_pack_index(sha1, base_url); | |
1007 | if (!tmp_idx) | |
b8caac2b TRC |
1008 | return -1; |
1009 | ||
750ef425 SP |
1010 | new_pack = parse_pack_index(sha1, tmp_idx); |
1011 | if (!new_pack) { | |
1012 | unlink(tmp_idx); | |
1013 | free(tmp_idx); | |
1014 | ||
b8caac2b | 1015 | return -1; /* parse_pack_index() already issued error message */ |
750ef425 SP |
1016 | } |
1017 | ||
1018 | ret = verify_pack_index(new_pack); | |
1019 | if (!ret) { | |
1020 | close_pack_index(new_pack); | |
1021 | ret = move_temp_to_file(tmp_idx, sha1_pack_index_name(sha1)); | |
1022 | } | |
1023 | free(tmp_idx); | |
1024 | if (ret) | |
1025 | return -1; | |
1026 | ||
1027 | add_pack: | |
b8caac2b TRC |
1028 | new_pack->next = *packs_head; |
1029 | *packs_head = new_pack; | |
1030 | return 0; | |
1031 | } | |
1032 | ||
1033 | int http_get_info_packs(const char *base_url, struct packed_git **packs_head) | |
1034 | { | |
1035 | int ret = 0, i = 0; | |
1036 | char *url, *data; | |
1037 | struct strbuf buf = STRBUF_INIT; | |
1038 | unsigned char sha1[20]; | |
1039 | ||
1040 | end_url_with_slash(&buf, base_url); | |
1041 | strbuf_addstr(&buf, "objects/info/packs"); | |
1042 | url = strbuf_detach(&buf, NULL); | |
1043 | ||
4656bf47 | 1044 | ret = http_get_strbuf(url, NULL, &buf, HTTP_NO_CACHE); |
b8caac2b TRC |
1045 | if (ret != HTTP_OK) |
1046 | goto cleanup; | |
1047 | ||
1048 | data = buf.buf; | |
1049 | while (i < buf.len) { | |
1050 | switch (data[i]) { | |
1051 | case 'P': | |
1052 | i++; | |
1053 | if (i + 52 <= buf.len && | |
1054 | !prefixcmp(data + i, " pack-") && | |
1055 | !prefixcmp(data + i + 46, ".pack\n")) { | |
1056 | get_sha1_hex(data + i + 6, sha1); | |
1057 | fetch_and_setup_pack_index(packs_head, sha1, | |
1058 | base_url); | |
1059 | i += 51; | |
1060 | break; | |
1061 | } | |
1062 | default: | |
1063 | while (i < buf.len && data[i] != '\n') | |
1064 | i++; | |
1065 | } | |
1066 | i++; | |
1067 | } | |
1068 | ||
1069 | cleanup: | |
1070 | free(url); | |
1071 | return ret; | |
1072 | } | |
2264dfa5 TRC |
1073 | |
1074 | void release_http_pack_request(struct http_pack_request *preq) | |
1075 | { | |
1076 | if (preq->packfile != NULL) { | |
1077 | fclose(preq->packfile); | |
1078 | preq->packfile = NULL; | |
2264dfa5 TRC |
1079 | } |
1080 | if (preq->range_header != NULL) { | |
1081 | curl_slist_free_all(preq->range_header); | |
1082 | preq->range_header = NULL; | |
1083 | } | |
1084 | preq->slot = NULL; | |
1085 | free(preq->url); | |
1086 | } | |
1087 | ||
1088 | int finish_http_pack_request(struct http_pack_request *preq) | |
1089 | { | |
2264dfa5 | 1090 | struct packed_git **lst; |
021ab6f0 | 1091 | struct packed_git *p = preq->target; |
fe72d420 SP |
1092 | char *tmp_idx; |
1093 | struct child_process ip; | |
1094 | const char *ip_argv[8]; | |
2264dfa5 | 1095 | |
fe72d420 | 1096 | close_pack_index(p); |
2264dfa5 | 1097 | |
3065274c SP |
1098 | fclose(preq->packfile); |
1099 | preq->packfile = NULL; | |
2264dfa5 TRC |
1100 | |
1101 | lst = preq->lst; | |
021ab6f0 | 1102 | while (*lst != p) |
2264dfa5 TRC |
1103 | lst = &((*lst)->next); |
1104 | *lst = (*lst)->next; | |
1105 | ||
fe72d420 SP |
1106 | tmp_idx = xstrdup(preq->tmpfile); |
1107 | strcpy(tmp_idx + strlen(tmp_idx) - strlen(".pack.temp"), | |
1108 | ".idx.temp"); | |
1109 | ||
1110 | ip_argv[0] = "index-pack"; | |
1111 | ip_argv[1] = "-o"; | |
1112 | ip_argv[2] = tmp_idx; | |
1113 | ip_argv[3] = preq->tmpfile; | |
1114 | ip_argv[4] = NULL; | |
1115 | ||
1116 | memset(&ip, 0, sizeof(ip)); | |
1117 | ip.argv = ip_argv; | |
1118 | ip.git_cmd = 1; | |
1119 | ip.no_stdin = 1; | |
1120 | ip.no_stdout = 1; | |
1121 | ||
1122 | if (run_command(&ip)) { | |
1123 | unlink(preq->tmpfile); | |
1124 | unlink(tmp_idx); | |
1125 | free(tmp_idx); | |
2264dfa5 | 1126 | return -1; |
fe72d420 SP |
1127 | } |
1128 | ||
1129 | unlink(sha1_pack_index_name(p->sha1)); | |
2264dfa5 | 1130 | |
fe72d420 SP |
1131 | if (move_temp_to_file(preq->tmpfile, sha1_pack_name(p->sha1)) |
1132 | || move_temp_to_file(tmp_idx, sha1_pack_index_name(p->sha1))) { | |
1133 | free(tmp_idx); | |
2264dfa5 | 1134 | return -1; |
fe72d420 | 1135 | } |
2264dfa5 | 1136 | |
fe72d420 SP |
1137 | install_packed_git(p); |
1138 | free(tmp_idx); | |
2264dfa5 TRC |
1139 | return 0; |
1140 | } | |
1141 | ||
1142 | struct http_pack_request *new_http_pack_request( | |
1143 | struct packed_git *target, const char *base_url) | |
1144 | { | |
2264dfa5 TRC |
1145 | long prev_posn = 0; |
1146 | char range[RANGE_HEADER_SIZE]; | |
1147 | struct strbuf buf = STRBUF_INIT; | |
1148 | struct http_pack_request *preq; | |
1149 | ||
ec99c9a8 | 1150 | preq = xcalloc(1, sizeof(*preq)); |
2264dfa5 | 1151 | preq->target = target; |
2264dfa5 TRC |
1152 | |
1153 | end_url_with_slash(&buf, base_url); | |
1154 | strbuf_addf(&buf, "objects/pack/pack-%s.pack", | |
1155 | sha1_to_hex(target->sha1)); | |
bb99190e | 1156 | preq->url = strbuf_detach(&buf, NULL); |
2264dfa5 | 1157 | |
90d05713 TRC |
1158 | snprintf(preq->tmpfile, sizeof(preq->tmpfile), "%s.temp", |
1159 | sha1_pack_name(target->sha1)); | |
2264dfa5 TRC |
1160 | preq->packfile = fopen(preq->tmpfile, "a"); |
1161 | if (!preq->packfile) { | |
1162 | error("Unable to open local file %s for pack", | |
1163 | preq->tmpfile); | |
1164 | goto abort; | |
1165 | } | |
1166 | ||
1167 | preq->slot = get_active_slot(); | |
2264dfa5 TRC |
1168 | curl_easy_setopt(preq->slot->curl, CURLOPT_FILE, preq->packfile); |
1169 | curl_easy_setopt(preq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite); | |
bb99190e | 1170 | curl_easy_setopt(preq->slot->curl, CURLOPT_URL, preq->url); |
2264dfa5 TRC |
1171 | curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER, |
1172 | no_pragma_header); | |
1173 | ||
1174 | /* | |
1175 | * If there is data present from a previous transfer attempt, | |
1176 | * resume where it left off | |
1177 | */ | |
1178 | prev_posn = ftell(preq->packfile); | |
1179 | if (prev_posn>0) { | |
1180 | if (http_is_verbose) | |
1181 | fprintf(stderr, | |
1182 | "Resuming fetch of pack %s at byte %ld\n", | |
1183 | sha1_to_hex(target->sha1), prev_posn); | |
1184 | sprintf(range, "Range: bytes=%ld-", prev_posn); | |
1185 | preq->range_header = curl_slist_append(NULL, range); | |
1186 | curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER, | |
1187 | preq->range_header); | |
1188 | } | |
1189 | ||
1190 | return preq; | |
1191 | ||
1192 | abort: | |
bb99190e | 1193 | free(preq->url); |
5ae9ebfd | 1194 | free(preq); |
2264dfa5 TRC |
1195 | return NULL; |
1196 | } | |
5424bc55 TRC |
1197 | |
1198 | /* Helpers for fetching objects (loose) */ | |
a04ff3ec | 1199 | static size_t fwrite_sha1_file(char *ptr, size_t eltsize, size_t nmemb, |
5424bc55 TRC |
1200 | void *data) |
1201 | { | |
1202 | unsigned char expn[4096]; | |
1203 | size_t size = eltsize * nmemb; | |
1204 | int posn = 0; | |
1205 | struct http_object_request *freq = | |
1206 | (struct http_object_request *)data; | |
1207 | do { | |
1208 | ssize_t retval = xwrite(freq->localfile, | |
1209 | (char *) ptr + posn, size - posn); | |
1210 | if (retval < 0) | |
1211 | return posn; | |
1212 | posn += retval; | |
1213 | } while (posn < size); | |
1214 | ||
1215 | freq->stream.avail_in = size; | |
a04ff3ec | 1216 | freq->stream.next_in = (void *)ptr; |
5424bc55 TRC |
1217 | do { |
1218 | freq->stream.next_out = expn; | |
1219 | freq->stream.avail_out = sizeof(expn); | |
1220 | freq->zret = git_inflate(&freq->stream, Z_SYNC_FLUSH); | |
1221 | git_SHA1_Update(&freq->c, expn, | |
1222 | sizeof(expn) - freq->stream.avail_out); | |
1223 | } while (freq->stream.avail_in && freq->zret == Z_OK); | |
5424bc55 TRC |
1224 | return size; |
1225 | } | |
1226 | ||
1227 | struct http_object_request *new_http_object_request(const char *base_url, | |
1228 | unsigned char *sha1) | |
1229 | { | |
1230 | char *hex = sha1_to_hex(sha1); | |
1231 | char *filename; | |
1232 | char prevfile[PATH_MAX]; | |
5424bc55 | 1233 | int prevlocal; |
a04ff3ec | 1234 | char prev_buf[PREV_BUF_SIZE]; |
5424bc55 TRC |
1235 | ssize_t prev_read = 0; |
1236 | long prev_posn = 0; | |
1237 | char range[RANGE_HEADER_SIZE]; | |
1238 | struct curl_slist *range_header = NULL; | |
1239 | struct http_object_request *freq; | |
1240 | ||
ec99c9a8 | 1241 | freq = xcalloc(1, sizeof(*freq)); |
5424bc55 TRC |
1242 | hashcpy(freq->sha1, sha1); |
1243 | freq->localfile = -1; | |
1244 | ||
1245 | filename = sha1_file_name(sha1); | |
5424bc55 TRC |
1246 | snprintf(freq->tmpfile, sizeof(freq->tmpfile), |
1247 | "%s.temp", filename); | |
1248 | ||
1249 | snprintf(prevfile, sizeof(prevfile), "%s.prev", filename); | |
1250 | unlink_or_warn(prevfile); | |
1251 | rename(freq->tmpfile, prevfile); | |
1252 | unlink_or_warn(freq->tmpfile); | |
1253 | ||
1254 | if (freq->localfile != -1) | |
1255 | error("fd leakage in start: %d", freq->localfile); | |
1256 | freq->localfile = open(freq->tmpfile, | |
1257 | O_WRONLY | O_CREAT | O_EXCL, 0666); | |
1258 | /* | |
1259 | * This could have failed due to the "lazy directory creation"; | |
1260 | * try to mkdir the last path component. | |
1261 | */ | |
1262 | if (freq->localfile < 0 && errno == ENOENT) { | |
1263 | char *dir = strrchr(freq->tmpfile, '/'); | |
1264 | if (dir) { | |
1265 | *dir = 0; | |
1266 | mkdir(freq->tmpfile, 0777); | |
1267 | *dir = '/'; | |
1268 | } | |
1269 | freq->localfile = open(freq->tmpfile, | |
1270 | O_WRONLY | O_CREAT | O_EXCL, 0666); | |
1271 | } | |
1272 | ||
1273 | if (freq->localfile < 0) { | |
0da8b2e7 SP |
1274 | error("Couldn't create temporary file %s: %s", |
1275 | freq->tmpfile, strerror(errno)); | |
5424bc55 TRC |
1276 | goto abort; |
1277 | } | |
1278 | ||
5424bc55 TRC |
1279 | git_inflate_init(&freq->stream); |
1280 | ||
1281 | git_SHA1_Init(&freq->c); | |
1282 | ||
bb99190e | 1283 | freq->url = get_remote_object_url(base_url, hex, 0); |
5424bc55 TRC |
1284 | |
1285 | /* | |
1286 | * If a previous temp file is present, process what was already | |
1287 | * fetched. | |
1288 | */ | |
1289 | prevlocal = open(prevfile, O_RDONLY); | |
1290 | if (prevlocal != -1) { | |
1291 | do { | |
1292 | prev_read = xread(prevlocal, prev_buf, PREV_BUF_SIZE); | |
1293 | if (prev_read>0) { | |
1294 | if (fwrite_sha1_file(prev_buf, | |
1295 | 1, | |
1296 | prev_read, | |
1297 | freq) == prev_read) { | |
1298 | prev_posn += prev_read; | |
1299 | } else { | |
1300 | prev_read = -1; | |
1301 | } | |
1302 | } | |
1303 | } while (prev_read > 0); | |
1304 | close(prevlocal); | |
1305 | } | |
1306 | unlink_or_warn(prevfile); | |
1307 | ||
1308 | /* | |
1309 | * Reset inflate/SHA1 if there was an error reading the previous temp | |
1310 | * file; also rewind to the beginning of the local file. | |
1311 | */ | |
1312 | if (prev_read == -1) { | |
1313 | memset(&freq->stream, 0, sizeof(freq->stream)); | |
1314 | git_inflate_init(&freq->stream); | |
1315 | git_SHA1_Init(&freq->c); | |
1316 | if (prev_posn>0) { | |
1317 | prev_posn = 0; | |
1318 | lseek(freq->localfile, 0, SEEK_SET); | |
0c4f21e4 | 1319 | if (ftruncate(freq->localfile, 0) < 0) { |
0da8b2e7 SP |
1320 | error("Couldn't truncate temporary file %s: %s", |
1321 | freq->tmpfile, strerror(errno)); | |
0c4f21e4 JL |
1322 | goto abort; |
1323 | } | |
5424bc55 TRC |
1324 | } |
1325 | } | |
1326 | ||
1327 | freq->slot = get_active_slot(); | |
1328 | ||
1329 | curl_easy_setopt(freq->slot->curl, CURLOPT_FILE, freq); | |
1330 | curl_easy_setopt(freq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file); | |
1331 | curl_easy_setopt(freq->slot->curl, CURLOPT_ERRORBUFFER, freq->errorstr); | |
bb99190e | 1332 | curl_easy_setopt(freq->slot->curl, CURLOPT_URL, freq->url); |
5424bc55 TRC |
1333 | curl_easy_setopt(freq->slot->curl, CURLOPT_HTTPHEADER, no_pragma_header); |
1334 | ||
1335 | /* | |
1336 | * If we have successfully processed data from a previous fetch | |
1337 | * attempt, only fetch the data we don't already have. | |
1338 | */ | |
1339 | if (prev_posn>0) { | |
1340 | if (http_is_verbose) | |
1341 | fprintf(stderr, | |
1342 | "Resuming fetch of object %s at byte %ld\n", | |
1343 | hex, prev_posn); | |
1344 | sprintf(range, "Range: bytes=%ld-", prev_posn); | |
1345 | range_header = curl_slist_append(range_header, range); | |
1346 | curl_easy_setopt(freq->slot->curl, | |
1347 | CURLOPT_HTTPHEADER, range_header); | |
1348 | } | |
1349 | ||
1350 | return freq; | |
1351 | ||
5424bc55 | 1352 | abort: |
bb99190e | 1353 | free(freq->url); |
5424bc55 TRC |
1354 | free(freq); |
1355 | return NULL; | |
1356 | } | |
1357 | ||
1358 | void process_http_object_request(struct http_object_request *freq) | |
1359 | { | |
1360 | if (freq->slot == NULL) | |
1361 | return; | |
1362 | freq->curl_result = freq->slot->curl_result; | |
1363 | freq->http_code = freq->slot->http_code; | |
1364 | freq->slot = NULL; | |
1365 | } | |
1366 | ||
1367 | int finish_http_object_request(struct http_object_request *freq) | |
1368 | { | |
1369 | struct stat st; | |
1370 | ||
1371 | close(freq->localfile); | |
1372 | freq->localfile = -1; | |
1373 | ||
1374 | process_http_object_request(freq); | |
1375 | ||
1376 | if (freq->http_code == 416) { | |
bd757c18 | 1377 | warning("requested range invalid; we may already have all the data."); |
5424bc55 TRC |
1378 | } else if (freq->curl_result != CURLE_OK) { |
1379 | if (stat(freq->tmpfile, &st) == 0) | |
1380 | if (st.st_size == 0) | |
1381 | unlink_or_warn(freq->tmpfile); | |
1382 | return -1; | |
1383 | } | |
1384 | ||
1385 | git_inflate_end(&freq->stream); | |
1386 | git_SHA1_Final(freq->real_sha1, &freq->c); | |
1387 | if (freq->zret != Z_STREAM_END) { | |
1388 | unlink_or_warn(freq->tmpfile); | |
1389 | return -1; | |
1390 | } | |
1391 | if (hashcmp(freq->sha1, freq->real_sha1)) { | |
1392 | unlink_or_warn(freq->tmpfile); | |
1393 | return -1; | |
1394 | } | |
1395 | freq->rename = | |
0da8b2e7 | 1396 | move_temp_to_file(freq->tmpfile, sha1_file_name(freq->sha1)); |
5424bc55 TRC |
1397 | |
1398 | return freq->rename; | |
1399 | } | |
1400 | ||
1401 | void abort_http_object_request(struct http_object_request *freq) | |
1402 | { | |
1403 | unlink_or_warn(freq->tmpfile); | |
1404 | ||
1405 | release_http_object_request(freq); | |
1406 | } | |
1407 | ||
1408 | void release_http_object_request(struct http_object_request *freq) | |
1409 | { | |
1410 | if (freq->localfile != -1) { | |
1411 | close(freq->localfile); | |
1412 | freq->localfile = -1; | |
1413 | } | |
1414 | if (freq->url != NULL) { | |
1415 | free(freq->url); | |
1416 | freq->url = NULL; | |
1417 | } | |
4b9fa0e3 TRC |
1418 | if (freq->slot != NULL) { |
1419 | freq->slot->callback_func = NULL; | |
1420 | freq->slot->callback_data = NULL; | |
1421 | release_active_slot(freq->slot); | |
1422 | freq->slot = NULL; | |
1423 | } | |
5424bc55 | 1424 | } |