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Commit | Line | Data |
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1c4b6604 | 1 | #include "git-compat-util.h" |
29508e1e | 2 | #include "http.h" |
2264dfa5 | 3 | #include "pack.h" |
de1a2fdd | 4 | #include "sideband.h" |
fe72d420 | 5 | #include "run-command.h" |
f39f72d8 | 6 | #include "url.h" |
6a56993b | 7 | #include "urlmatch.h" |
148bb6a7 | 8 | #include "credential.h" |
745c7c8e | 9 | #include "version.h" |
047ec602 | 10 | #include "pkt-line.h" |
93f7d910 | 11 | #include "gettext.h" |
29508e1e | 12 | |
4251ccbd | 13 | int active_requests; |
e9176745 | 14 | int http_is_verbose; |
de1a2fdd | 15 | size_t http_post_buffer = 16 * LARGE_PACKET_MAX; |
29508e1e | 16 | |
b8ac9230 MS |
17 | #if LIBCURL_VERSION_NUM >= 0x070a06 |
18 | #define LIBCURL_CAN_HANDLE_AUTH_ANY | |
19 | #endif | |
20 | ||
ad75ebe5 TRC |
21 | static int min_curl_sessions = 1; |
22 | static int curl_session_count; | |
29508e1e | 23 | #ifdef USE_CURL_MULTI |
cc3530e8 MH |
24 | static int max_requests = -1; |
25 | static CURLM *curlm; | |
29508e1e NH |
26 | #endif |
27 | #ifndef NO_CURL_EASY_DUPHANDLE | |
cc3530e8 | 28 | static CURL *curl_default; |
29508e1e | 29 | #endif |
5424bc55 TRC |
30 | |
31 | #define PREV_BUF_SIZE 4096 | |
32 | #define RANGE_HEADER_SIZE 30 | |
33 | ||
29508e1e NH |
34 | char curl_errorstr[CURL_ERROR_SIZE]; |
35 | ||
cc3530e8 | 36 | static int curl_ssl_verify = -1; |
4bc444eb | 37 | static int curl_ssl_try; |
4251ccbd | 38 | static const char *ssl_cert; |
ef52aafa | 39 | #if LIBCURL_VERSION_NUM >= 0x070903 |
4251ccbd | 40 | static const char *ssl_key; |
29508e1e NH |
41 | #endif |
42 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
4251ccbd | 43 | static const char *ssl_capath; |
29508e1e | 44 | #endif |
4251ccbd | 45 | static const char *ssl_cainfo; |
cc3530e8 MH |
46 | static long curl_low_speed_limit = -1; |
47 | static long curl_low_speed_time = -1; | |
4251ccbd JH |
48 | static int curl_ftp_no_epsv; |
49 | static const char *curl_http_proxy; | |
bcfb95dd | 50 | static const char *curl_cookie_file; |
912b2acf | 51 | static int curl_save_cookies; |
2501aff8 | 52 | struct credential http_auth = CREDENTIAL_INIT; |
a4ddbc33 | 53 | static int http_proactive_auth; |
b1d1058c | 54 | static const char *user_agent; |
29508e1e | 55 | |
30dd9163 ML |
56 | #if LIBCURL_VERSION_NUM >= 0x071700 |
57 | /* Use CURLOPT_KEYPASSWD as is */ | |
58 | #elif LIBCURL_VERSION_NUM >= 0x070903 | |
59 | #define CURLOPT_KEYPASSWD CURLOPT_SSLKEYPASSWD | |
60 | #else | |
61 | #define CURLOPT_KEYPASSWD CURLOPT_SSLCERTPASSWD | |
62 | #endif | |
63 | ||
148bb6a7 | 64 | static struct credential cert_auth = CREDENTIAL_INIT; |
30dd9163 ML |
65 | static int ssl_cert_password_required; |
66 | ||
cc3530e8 | 67 | static struct curl_slist *pragma_header; |
5424bc55 | 68 | static struct curl_slist *no_pragma_header; |
e9176745 | 69 | |
4251ccbd | 70 | static struct active_request_slot *active_queue_head; |
29508e1e | 71 | |
f18604bb YE |
72 | static char *cached_accept_language; |
73 | ||
a04ff3ec | 74 | size_t fread_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_) |
29508e1e NH |
75 | { |
76 | size_t size = eltsize * nmemb; | |
f444e528 JH |
77 | struct buffer *buffer = buffer_; |
78 | ||
028c2976 MH |
79 | if (size > buffer->buf.len - buffer->posn) |
80 | size = buffer->buf.len - buffer->posn; | |
81 | memcpy(ptr, buffer->buf.buf + buffer->posn, size); | |
29508e1e | 82 | buffer->posn += size; |
028c2976 | 83 | |
29508e1e NH |
84 | return size; |
85 | } | |
86 | ||
3944ba0c MS |
87 | #ifndef NO_CURL_IOCTL |
88 | curlioerr ioctl_buffer(CURL *handle, int cmd, void *clientp) | |
89 | { | |
90 | struct buffer *buffer = clientp; | |
91 | ||
92 | switch (cmd) { | |
93 | case CURLIOCMD_NOP: | |
94 | return CURLIOE_OK; | |
95 | ||
96 | case CURLIOCMD_RESTARTREAD: | |
97 | buffer->posn = 0; | |
98 | return CURLIOE_OK; | |
99 | ||
100 | default: | |
101 | return CURLIOE_UNKNOWNCMD; | |
102 | } | |
103 | } | |
104 | #endif | |
105 | ||
a04ff3ec | 106 | size_t fwrite_buffer(char *ptr, size_t eltsize, size_t nmemb, void *buffer_) |
29508e1e NH |
107 | { |
108 | size_t size = eltsize * nmemb; | |
f444e528 JH |
109 | struct strbuf *buffer = buffer_; |
110 | ||
028c2976 | 111 | strbuf_add(buffer, ptr, size); |
29508e1e NH |
112 | return size; |
113 | } | |
114 | ||
a04ff3ec | 115 | size_t fwrite_null(char *ptr, size_t eltsize, size_t nmemb, void *strbuf) |
29508e1e | 116 | { |
29508e1e NH |
117 | return eltsize * nmemb; |
118 | } | |
119 | ||
29508e1e NH |
120 | #ifdef USE_CURL_MULTI |
121 | static void process_curl_messages(void) | |
122 | { | |
123 | int num_messages; | |
124 | struct active_request_slot *slot; | |
125 | CURLMsg *curl_message = curl_multi_info_read(curlm, &num_messages); | |
126 | ||
127 | while (curl_message != NULL) { | |
128 | if (curl_message->msg == CURLMSG_DONE) { | |
129 | int curl_result = curl_message->data.result; | |
130 | slot = active_queue_head; | |
131 | while (slot != NULL && | |
132 | slot->curl != curl_message->easy_handle) | |
133 | slot = slot->next; | |
134 | if (slot != NULL) { | |
135 | curl_multi_remove_handle(curlm, slot->curl); | |
136 | slot->curl_result = curl_result; | |
137 | finish_active_slot(slot); | |
138 | } else { | |
139 | fprintf(stderr, "Received DONE message for unknown request!\n"); | |
140 | } | |
141 | } else { | |
142 | fprintf(stderr, "Unknown CURL message received: %d\n", | |
143 | (int)curl_message->msg); | |
144 | } | |
145 | curl_message = curl_multi_info_read(curlm, &num_messages); | |
146 | } | |
147 | } | |
148 | #endif | |
149 | ||
ef90d6d4 | 150 | static int http_options(const char *var, const char *value, void *cb) |
29508e1e NH |
151 | { |
152 | if (!strcmp("http.sslverify", var)) { | |
7059cd99 | 153 | curl_ssl_verify = git_config_bool(var, value); |
29508e1e NH |
154 | return 0; |
155 | } | |
7059cd99 JH |
156 | if (!strcmp("http.sslcert", var)) |
157 | return git_config_string(&ssl_cert, var, value); | |
ef52aafa | 158 | #if LIBCURL_VERSION_NUM >= 0x070903 |
7059cd99 JH |
159 | if (!strcmp("http.sslkey", var)) |
160 | return git_config_string(&ssl_key, var, value); | |
29508e1e NH |
161 | #endif |
162 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
7059cd99 JH |
163 | if (!strcmp("http.sslcapath", var)) |
164 | return git_config_string(&ssl_capath, var, value); | |
29508e1e | 165 | #endif |
7059cd99 JH |
166 | if (!strcmp("http.sslcainfo", var)) |
167 | return git_config_string(&ssl_cainfo, var, value); | |
754ae192 | 168 | if (!strcmp("http.sslcertpasswordprotected", var)) { |
3f4ccd2b | 169 | ssl_cert_password_required = git_config_bool(var, value); |
754ae192 ML |
170 | return 0; |
171 | } | |
4bc444eb MV |
172 | if (!strcmp("http.ssltry", var)) { |
173 | curl_ssl_try = git_config_bool(var, value); | |
174 | return 0; | |
175 | } | |
ad75ebe5 TRC |
176 | if (!strcmp("http.minsessions", var)) { |
177 | min_curl_sessions = git_config_int(var, value); | |
178 | #ifndef USE_CURL_MULTI | |
179 | if (min_curl_sessions > 1) | |
180 | min_curl_sessions = 1; | |
181 | #endif | |
182 | return 0; | |
183 | } | |
a6080a0a | 184 | #ifdef USE_CURL_MULTI |
29508e1e | 185 | if (!strcmp("http.maxrequests", var)) { |
7059cd99 | 186 | max_requests = git_config_int(var, value); |
29508e1e NH |
187 | return 0; |
188 | } | |
189 | #endif | |
29508e1e | 190 | if (!strcmp("http.lowspeedlimit", var)) { |
7059cd99 | 191 | curl_low_speed_limit = (long)git_config_int(var, value); |
29508e1e NH |
192 | return 0; |
193 | } | |
194 | if (!strcmp("http.lowspeedtime", var)) { | |
7059cd99 | 195 | curl_low_speed_time = (long)git_config_int(var, value); |
29508e1e NH |
196 | return 0; |
197 | } | |
198 | ||
3ea099d4 SK |
199 | if (!strcmp("http.noepsv", var)) { |
200 | curl_ftp_no_epsv = git_config_bool(var, value); | |
201 | return 0; | |
202 | } | |
7059cd99 JH |
203 | if (!strcmp("http.proxy", var)) |
204 | return git_config_string(&curl_http_proxy, var, value); | |
3ea099d4 | 205 | |
bcfb95dd DB |
206 | if (!strcmp("http.cookiefile", var)) |
207 | return git_config_string(&curl_cookie_file, var, value); | |
912b2acf DB |
208 | if (!strcmp("http.savecookies", var)) { |
209 | curl_save_cookies = git_config_bool(var, value); | |
210 | return 0; | |
211 | } | |
bcfb95dd | 212 | |
de1a2fdd SP |
213 | if (!strcmp("http.postbuffer", var)) { |
214 | http_post_buffer = git_config_int(var, value); | |
215 | if (http_post_buffer < LARGE_PACKET_MAX) | |
216 | http_post_buffer = LARGE_PACKET_MAX; | |
217 | return 0; | |
218 | } | |
219 | ||
b1d1058c SO |
220 | if (!strcmp("http.useragent", var)) |
221 | return git_config_string(&user_agent, var, value); | |
222 | ||
29508e1e | 223 | /* Fall back on the default ones */ |
ef90d6d4 | 224 | return git_default_config(var, value, cb); |
29508e1e NH |
225 | } |
226 | ||
c33976cb JH |
227 | static void init_curl_http_auth(CURL *result) |
228 | { | |
6f4c347c JK |
229 | if (!http_auth.username) |
230 | return; | |
231 | ||
232 | credential_fill(&http_auth); | |
233 | ||
234 | #if LIBCURL_VERSION_NUM >= 0x071301 | |
235 | curl_easy_setopt(result, CURLOPT_USERNAME, http_auth.username); | |
236 | curl_easy_setopt(result, CURLOPT_PASSWORD, http_auth.password); | |
237 | #else | |
238 | { | |
aa0834a0 | 239 | static struct strbuf up = STRBUF_INIT; |
a94cf2cb BC |
240 | /* |
241 | * Note that we assume we only ever have a single set of | |
242 | * credentials in a given program run, so we do not have | |
243 | * to worry about updating this buffer, only setting its | |
244 | * initial value. | |
245 | */ | |
246 | if (!up.len) | |
247 | strbuf_addf(&up, "%s:%s", | |
248 | http_auth.username, http_auth.password); | |
aa0834a0 | 249 | curl_easy_setopt(result, CURLOPT_USERPWD, up.buf); |
c33976cb | 250 | } |
6f4c347c | 251 | #endif |
c33976cb JH |
252 | } |
253 | ||
30dd9163 ML |
254 | static int has_cert_password(void) |
255 | { | |
30dd9163 ML |
256 | if (ssl_cert == NULL || ssl_cert_password_required != 1) |
257 | return 0; | |
148bb6a7 JK |
258 | if (!cert_auth.password) { |
259 | cert_auth.protocol = xstrdup("cert"); | |
75e9a405 | 260 | cert_auth.username = xstrdup(""); |
148bb6a7 JK |
261 | cert_auth.path = xstrdup(ssl_cert); |
262 | credential_fill(&cert_auth); | |
263 | } | |
264 | return 1; | |
30dd9163 ML |
265 | } |
266 | ||
47ce1153 JK |
267 | #if LIBCURL_VERSION_NUM >= 0x071900 |
268 | static void set_curl_keepalive(CURL *c) | |
269 | { | |
270 | curl_easy_setopt(c, CURLOPT_TCP_KEEPALIVE, 1); | |
271 | } | |
272 | ||
273 | #elif LIBCURL_VERSION_NUM >= 0x071000 | |
a15d069a EW |
274 | static int sockopt_callback(void *client, curl_socket_t fd, curlsocktype type) |
275 | { | |
276 | int ka = 1; | |
277 | int rc; | |
278 | socklen_t len = (socklen_t)sizeof(ka); | |
279 | ||
280 | if (type != CURLSOCKTYPE_IPCXN) | |
281 | return 0; | |
282 | ||
283 | rc = setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, (void *)&ka, len); | |
284 | if (rc < 0) | |
285 | warning("unable to set SO_KEEPALIVE on socket %s", | |
286 | strerror(errno)); | |
287 | ||
288 | return 0; /* CURL_SOCKOPT_OK only exists since curl 7.21.5 */ | |
289 | } | |
290 | ||
47ce1153 JK |
291 | static void set_curl_keepalive(CURL *c) |
292 | { | |
293 | curl_easy_setopt(c, CURLOPT_SOCKOPTFUNCTION, sockopt_callback); | |
294 | } | |
295 | ||
296 | #else | |
297 | static void set_curl_keepalive(CURL *c) | |
298 | { | |
299 | /* not supported on older curl versions */ | |
300 | } | |
301 | #endif | |
302 | ||
4251ccbd | 303 | static CURL *get_curl_handle(void) |
11979b98 | 304 | { |
4251ccbd | 305 | CURL *result = curl_easy_init(); |
11979b98 | 306 | |
faa3807c BR |
307 | if (!result) |
308 | die("curl_easy_init failed"); | |
309 | ||
a5ccc597 JH |
310 | if (!curl_ssl_verify) { |
311 | curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 0); | |
312 | curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 0); | |
313 | } else { | |
314 | /* Verify authenticity of the peer's certificate */ | |
315 | curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 1); | |
316 | /* The name in the cert must match whom we tried to connect */ | |
317 | curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 2); | |
318 | } | |
319 | ||
11979b98 JH |
320 | #if LIBCURL_VERSION_NUM >= 0x070907 |
321 | curl_easy_setopt(result, CURLOPT_NETRC, CURL_NETRC_OPTIONAL); | |
322 | #endif | |
b8ac9230 | 323 | #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY |
525ecd26 | 324 | curl_easy_setopt(result, CURLOPT_HTTPAUTH, CURLAUTH_ANY); |
b8ac9230 | 325 | #endif |
11979b98 | 326 | |
a4ddbc33 JK |
327 | if (http_proactive_auth) |
328 | init_curl_http_auth(result); | |
329 | ||
11979b98 JH |
330 | if (ssl_cert != NULL) |
331 | curl_easy_setopt(result, CURLOPT_SSLCERT, ssl_cert); | |
30dd9163 | 332 | if (has_cert_password()) |
148bb6a7 | 333 | curl_easy_setopt(result, CURLOPT_KEYPASSWD, cert_auth.password); |
ef52aafa | 334 | #if LIBCURL_VERSION_NUM >= 0x070903 |
11979b98 JH |
335 | if (ssl_key != NULL) |
336 | curl_easy_setopt(result, CURLOPT_SSLKEY, ssl_key); | |
337 | #endif | |
338 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
339 | if (ssl_capath != NULL) | |
340 | curl_easy_setopt(result, CURLOPT_CAPATH, ssl_capath); | |
341 | #endif | |
342 | if (ssl_cainfo != NULL) | |
343 | curl_easy_setopt(result, CURLOPT_CAINFO, ssl_cainfo); | |
11979b98 JH |
344 | |
345 | if (curl_low_speed_limit > 0 && curl_low_speed_time > 0) { | |
346 | curl_easy_setopt(result, CURLOPT_LOW_SPEED_LIMIT, | |
347 | curl_low_speed_limit); | |
348 | curl_easy_setopt(result, CURLOPT_LOW_SPEED_TIME, | |
349 | curl_low_speed_time); | |
350 | } | |
351 | ||
352 | curl_easy_setopt(result, CURLOPT_FOLLOWLOCATION, 1); | |
311e2ea0 TRC |
353 | #if LIBCURL_VERSION_NUM >= 0x071301 |
354 | curl_easy_setopt(result, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL); | |
355 | #elif LIBCURL_VERSION_NUM >= 0x071101 | |
356 | curl_easy_setopt(result, CURLOPT_POST301, 1); | |
357 | #endif | |
11979b98 | 358 | |
7982d74e MW |
359 | if (getenv("GIT_CURL_VERBOSE")) |
360 | curl_easy_setopt(result, CURLOPT_VERBOSE, 1); | |
361 | ||
b1d1058c | 362 | curl_easy_setopt(result, CURLOPT_USERAGENT, |
745c7c8e | 363 | user_agent ? user_agent : git_user_agent()); |
20fc9bc5 | 364 | |
3ea099d4 SK |
365 | if (curl_ftp_no_epsv) |
366 | curl_easy_setopt(result, CURLOPT_FTP_USE_EPSV, 0); | |
367 | ||
4bc444eb MV |
368 | #ifdef CURLOPT_USE_SSL |
369 | if (curl_ssl_try) | |
370 | curl_easy_setopt(result, CURLOPT_USE_SSL, CURLUSESSL_TRY); | |
371 | #endif | |
372 | ||
dd613997 | 373 | if (curl_http_proxy) { |
9c5665aa | 374 | curl_easy_setopt(result, CURLOPT_PROXY, curl_http_proxy); |
dd613997 NBL |
375 | curl_easy_setopt(result, CURLOPT_PROXYAUTH, CURLAUTH_ANY); |
376 | } | |
9c5665aa | 377 | |
47ce1153 | 378 | set_curl_keepalive(result); |
a15d069a | 379 | |
11979b98 JH |
380 | return result; |
381 | } | |
382 | ||
7059cd99 JH |
383 | static void set_from_env(const char **var, const char *envname) |
384 | { | |
385 | const char *val = getenv(envname); | |
386 | if (val) | |
387 | *var = val; | |
388 | } | |
389 | ||
a4ddbc33 | 390 | void http_init(struct remote *remote, const char *url, int proactive_auth) |
29508e1e NH |
391 | { |
392 | char *low_speed_limit; | |
393 | char *low_speed_time; | |
6a56993b KM |
394 | char *normalized_url; |
395 | struct urlmatch_config config = { STRING_LIST_INIT_DUP }; | |
396 | ||
397 | config.section = "http"; | |
398 | config.key = NULL; | |
399 | config.collect_fn = http_options; | |
400 | config.cascade_fn = git_default_config; | |
401 | config.cb = NULL; | |
29508e1e | 402 | |
e9176745 | 403 | http_is_verbose = 0; |
6a56993b | 404 | normalized_url = url_normalize(url, &config.url); |
e9176745 | 405 | |
6a56993b KM |
406 | git_config(urlmatch_config_entry, &config); |
407 | free(normalized_url); | |
7059cd99 | 408 | |
faa3807c BR |
409 | if (curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK) |
410 | die("curl_global_init failed"); | |
29508e1e | 411 | |
a4ddbc33 JK |
412 | http_proactive_auth = proactive_auth; |
413 | ||
9fc6440d MH |
414 | if (remote && remote->http_proxy) |
415 | curl_http_proxy = xstrdup(remote->http_proxy); | |
416 | ||
29508e1e | 417 | pragma_header = curl_slist_append(pragma_header, "Pragma: no-cache"); |
e9176745 | 418 | no_pragma_header = curl_slist_append(no_pragma_header, "Pragma:"); |
29508e1e NH |
419 | |
420 | #ifdef USE_CURL_MULTI | |
421 | { | |
422 | char *http_max_requests = getenv("GIT_HTTP_MAX_REQUESTS"); | |
423 | if (http_max_requests != NULL) | |
424 | max_requests = atoi(http_max_requests); | |
425 | } | |
426 | ||
427 | curlm = curl_multi_init(); | |
8837eb47 JK |
428 | if (!curlm) |
429 | die("curl_multi_init failed"); | |
29508e1e NH |
430 | #endif |
431 | ||
432 | if (getenv("GIT_SSL_NO_VERIFY")) | |
433 | curl_ssl_verify = 0; | |
434 | ||
7059cd99 | 435 | set_from_env(&ssl_cert, "GIT_SSL_CERT"); |
ef52aafa | 436 | #if LIBCURL_VERSION_NUM >= 0x070903 |
7059cd99 | 437 | set_from_env(&ssl_key, "GIT_SSL_KEY"); |
29508e1e NH |
438 | #endif |
439 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
7059cd99 | 440 | set_from_env(&ssl_capath, "GIT_SSL_CAPATH"); |
29508e1e | 441 | #endif |
7059cd99 | 442 | set_from_env(&ssl_cainfo, "GIT_SSL_CAINFO"); |
29508e1e | 443 | |
b1d1058c SO |
444 | set_from_env(&user_agent, "GIT_HTTP_USER_AGENT"); |
445 | ||
29508e1e NH |
446 | low_speed_limit = getenv("GIT_HTTP_LOW_SPEED_LIMIT"); |
447 | if (low_speed_limit != NULL) | |
448 | curl_low_speed_limit = strtol(low_speed_limit, NULL, 10); | |
449 | low_speed_time = getenv("GIT_HTTP_LOW_SPEED_TIME"); | |
450 | if (low_speed_time != NULL) | |
451 | curl_low_speed_time = strtol(low_speed_time, NULL, 10); | |
452 | ||
29508e1e NH |
453 | if (curl_ssl_verify == -1) |
454 | curl_ssl_verify = 1; | |
455 | ||
ad75ebe5 | 456 | curl_session_count = 0; |
29508e1e NH |
457 | #ifdef USE_CURL_MULTI |
458 | if (max_requests < 1) | |
459 | max_requests = DEFAULT_MAX_REQUESTS; | |
460 | #endif | |
461 | ||
3ea099d4 SK |
462 | if (getenv("GIT_CURL_FTP_NO_EPSV")) |
463 | curl_ftp_no_epsv = 1; | |
464 | ||
deba4937 | 465 | if (url) { |
148bb6a7 | 466 | credential_from_url(&http_auth, url); |
754ae192 ML |
467 | if (!ssl_cert_password_required && |
468 | getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") && | |
59556548 | 469 | starts_with(url, "https://")) |
30dd9163 ML |
470 | ssl_cert_password_required = 1; |
471 | } | |
c33976cb | 472 | |
29508e1e NH |
473 | #ifndef NO_CURL_EASY_DUPHANDLE |
474 | curl_default = get_curl_handle(); | |
475 | #endif | |
476 | } | |
477 | ||
478 | void http_cleanup(void) | |
479 | { | |
480 | struct active_request_slot *slot = active_queue_head; | |
29508e1e NH |
481 | |
482 | while (slot != NULL) { | |
3278cd0a | 483 | struct active_request_slot *next = slot->next; |
f23d1f76 | 484 | if (slot->curl != NULL) { |
29508e1e | 485 | #ifdef USE_CURL_MULTI |
f23d1f76 | 486 | curl_multi_remove_handle(curlm, slot->curl); |
29508e1e | 487 | #endif |
29508e1e | 488 | curl_easy_cleanup(slot->curl); |
f23d1f76 | 489 | } |
3278cd0a SP |
490 | free(slot); |
491 | slot = next; | |
29508e1e | 492 | } |
3278cd0a | 493 | active_queue_head = NULL; |
29508e1e NH |
494 | |
495 | #ifndef NO_CURL_EASY_DUPHANDLE | |
496 | curl_easy_cleanup(curl_default); | |
497 | #endif | |
498 | ||
499 | #ifdef USE_CURL_MULTI | |
500 | curl_multi_cleanup(curlm); | |
501 | #endif | |
502 | curl_global_cleanup(); | |
b3ca4e4e NH |
503 | |
504 | curl_slist_free_all(pragma_header); | |
3278cd0a | 505 | pragma_header = NULL; |
9fc6440d | 506 | |
e9176745 TRC |
507 | curl_slist_free_all(no_pragma_header); |
508 | no_pragma_header = NULL; | |
509 | ||
9fc6440d | 510 | if (curl_http_proxy) { |
e4a80ecf | 511 | free((void *)curl_http_proxy); |
9fc6440d MH |
512 | curl_http_proxy = NULL; |
513 | } | |
30dd9163 | 514 | |
148bb6a7 JK |
515 | if (cert_auth.password != NULL) { |
516 | memset(cert_auth.password, 0, strlen(cert_auth.password)); | |
517 | free(cert_auth.password); | |
518 | cert_auth.password = NULL; | |
30dd9163 ML |
519 | } |
520 | ssl_cert_password_required = 0; | |
f18604bb YE |
521 | |
522 | free(cached_accept_language); | |
523 | cached_accept_language = NULL; | |
29508e1e NH |
524 | } |
525 | ||
29508e1e NH |
526 | struct active_request_slot *get_active_slot(void) |
527 | { | |
528 | struct active_request_slot *slot = active_queue_head; | |
529 | struct active_request_slot *newslot; | |
530 | ||
531 | #ifdef USE_CURL_MULTI | |
532 | int num_transfers; | |
533 | ||
534 | /* Wait for a slot to open up if the queue is full */ | |
535 | while (active_requests >= max_requests) { | |
536 | curl_multi_perform(curlm, &num_transfers); | |
4251ccbd | 537 | if (num_transfers < active_requests) |
29508e1e | 538 | process_curl_messages(); |
29508e1e NH |
539 | } |
540 | #endif | |
541 | ||
4251ccbd | 542 | while (slot != NULL && slot->in_use) |
29508e1e | 543 | slot = slot->next; |
4251ccbd | 544 | |
29508e1e NH |
545 | if (slot == NULL) { |
546 | newslot = xmalloc(sizeof(*newslot)); | |
547 | newslot->curl = NULL; | |
548 | newslot->in_use = 0; | |
549 | newslot->next = NULL; | |
550 | ||
551 | slot = active_queue_head; | |
552 | if (slot == NULL) { | |
553 | active_queue_head = newslot; | |
554 | } else { | |
4251ccbd | 555 | while (slot->next != NULL) |
29508e1e | 556 | slot = slot->next; |
29508e1e NH |
557 | slot->next = newslot; |
558 | } | |
559 | slot = newslot; | |
560 | } | |
561 | ||
562 | if (slot->curl == NULL) { | |
563 | #ifdef NO_CURL_EASY_DUPHANDLE | |
564 | slot->curl = get_curl_handle(); | |
565 | #else | |
566 | slot->curl = curl_easy_duphandle(curl_default); | |
567 | #endif | |
ad75ebe5 | 568 | curl_session_count++; |
29508e1e NH |
569 | } |
570 | ||
571 | active_requests++; | |
572 | slot->in_use = 1; | |
c8568e13 | 573 | slot->results = NULL; |
baa7b67d | 574 | slot->finished = NULL; |
29508e1e NH |
575 | slot->callback_data = NULL; |
576 | slot->callback_func = NULL; | |
bcfb95dd | 577 | curl_easy_setopt(slot->curl, CURLOPT_COOKIEFILE, curl_cookie_file); |
912b2acf DB |
578 | if (curl_save_cookies) |
579 | curl_easy_setopt(slot->curl, CURLOPT_COOKIEJAR, curl_cookie_file); | |
29508e1e | 580 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, pragma_header); |
29508e1e | 581 | curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, curl_errorstr); |
9094950d NH |
582 | curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, NULL); |
583 | curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, NULL); | |
584 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, NULL); | |
1e41827d | 585 | curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, NULL); |
9094950d NH |
586 | curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 0); |
587 | curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1); | |
b793acf1 | 588 | curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 1); |
dfa1725a JK |
589 | if (http_auth.password) |
590 | init_curl_http_auth(slot->curl); | |
29508e1e NH |
591 | |
592 | return slot; | |
593 | } | |
594 | ||
595 | int start_active_slot(struct active_request_slot *slot) | |
596 | { | |
597 | #ifdef USE_CURL_MULTI | |
598 | CURLMcode curlm_result = curl_multi_add_handle(curlm, slot->curl); | |
45c17412 | 599 | int num_transfers; |
29508e1e NH |
600 | |
601 | if (curlm_result != CURLM_OK && | |
602 | curlm_result != CURLM_CALL_MULTI_PERFORM) { | |
603 | active_requests--; | |
604 | slot->in_use = 0; | |
605 | return 0; | |
606 | } | |
45c17412 DB |
607 | |
608 | /* | |
609 | * We know there must be something to do, since we just added | |
610 | * something. | |
611 | */ | |
612 | curl_multi_perform(curlm, &num_transfers); | |
29508e1e NH |
613 | #endif |
614 | return 1; | |
615 | } | |
616 | ||
617 | #ifdef USE_CURL_MULTI | |
fc57b6aa DB |
618 | struct fill_chain { |
619 | void *data; | |
620 | int (*fill)(void *); | |
621 | struct fill_chain *next; | |
622 | }; | |
623 | ||
4251ccbd | 624 | static struct fill_chain *fill_cfg; |
fc57b6aa DB |
625 | |
626 | void add_fill_function(void *data, int (*fill)(void *)) | |
627 | { | |
e8eec71d | 628 | struct fill_chain *new = xmalloc(sizeof(*new)); |
fc57b6aa DB |
629 | struct fill_chain **linkp = &fill_cfg; |
630 | new->data = data; | |
631 | new->fill = fill; | |
632 | new->next = NULL; | |
633 | while (*linkp) | |
634 | linkp = &(*linkp)->next; | |
635 | *linkp = new; | |
636 | } | |
637 | ||
45c17412 DB |
638 | void fill_active_slots(void) |
639 | { | |
640 | struct active_request_slot *slot = active_queue_head; | |
641 | ||
fc57b6aa DB |
642 | while (active_requests < max_requests) { |
643 | struct fill_chain *fill; | |
644 | for (fill = fill_cfg; fill; fill = fill->next) | |
645 | if (fill->fill(fill->data)) | |
646 | break; | |
647 | ||
648 | if (!fill) | |
45c17412 | 649 | break; |
fc57b6aa | 650 | } |
45c17412 DB |
651 | |
652 | while (slot != NULL) { | |
ad75ebe5 TRC |
653 | if (!slot->in_use && slot->curl != NULL |
654 | && curl_session_count > min_curl_sessions) { | |
45c17412 DB |
655 | curl_easy_cleanup(slot->curl); |
656 | slot->curl = NULL; | |
ad75ebe5 | 657 | curl_session_count--; |
45c17412 DB |
658 | } |
659 | slot = slot->next; | |
660 | } | |
661 | } | |
662 | ||
29508e1e NH |
663 | void step_active_slots(void) |
664 | { | |
665 | int num_transfers; | |
666 | CURLMcode curlm_result; | |
667 | ||
668 | do { | |
669 | curlm_result = curl_multi_perform(curlm, &num_transfers); | |
670 | } while (curlm_result == CURLM_CALL_MULTI_PERFORM); | |
671 | if (num_transfers < active_requests) { | |
672 | process_curl_messages(); | |
673 | fill_active_slots(); | |
674 | } | |
675 | } | |
676 | #endif | |
677 | ||
678 | void run_active_slot(struct active_request_slot *slot) | |
679 | { | |
680 | #ifdef USE_CURL_MULTI | |
29508e1e NH |
681 | fd_set readfds; |
682 | fd_set writefds; | |
683 | fd_set excfds; | |
684 | int max_fd; | |
685 | struct timeval select_timeout; | |
baa7b67d | 686 | int finished = 0; |
29508e1e | 687 | |
baa7b67d NH |
688 | slot->finished = &finished; |
689 | while (!finished) { | |
29508e1e NH |
690 | step_active_slots(); |
691 | ||
df26c471 | 692 | if (slot->in_use) { |
eb56c821 MF |
693 | #if LIBCURL_VERSION_NUM >= 0x070f04 |
694 | long curl_timeout; | |
695 | curl_multi_timeout(curlm, &curl_timeout); | |
696 | if (curl_timeout == 0) { | |
697 | continue; | |
698 | } else if (curl_timeout == -1) { | |
699 | select_timeout.tv_sec = 0; | |
700 | select_timeout.tv_usec = 50000; | |
701 | } else { | |
702 | select_timeout.tv_sec = curl_timeout / 1000; | |
703 | select_timeout.tv_usec = (curl_timeout % 1000) * 1000; | |
704 | } | |
705 | #else | |
706 | select_timeout.tv_sec = 0; | |
707 | select_timeout.tv_usec = 50000; | |
708 | #endif | |
29508e1e | 709 | |
6f9dd67f | 710 | max_fd = -1; |
29508e1e NH |
711 | FD_ZERO(&readfds); |
712 | FD_ZERO(&writefds); | |
713 | FD_ZERO(&excfds); | |
6f9dd67f | 714 | curl_multi_fdset(curlm, &readfds, &writefds, &excfds, &max_fd); |
eb56c821 | 715 | |
7202b81f SZ |
716 | /* |
717 | * It can happen that curl_multi_timeout returns a pathologically | |
718 | * long timeout when curl_multi_fdset returns no file descriptors | |
719 | * to read. See commit message for more details. | |
720 | */ | |
721 | if (max_fd < 0 && | |
722 | (select_timeout.tv_sec > 0 || | |
723 | select_timeout.tv_usec > 50000)) { | |
724 | select_timeout.tv_sec = 0; | |
725 | select_timeout.tv_usec = 50000; | |
726 | } | |
727 | ||
6f9dd67f | 728 | select(max_fd+1, &readfds, &writefds, &excfds, &select_timeout); |
29508e1e NH |
729 | } |
730 | } | |
731 | #else | |
732 | while (slot->in_use) { | |
733 | slot->curl_result = curl_easy_perform(slot->curl); | |
734 | finish_active_slot(slot); | |
735 | } | |
736 | #endif | |
737 | } | |
738 | ||
53f31389 | 739 | static void closedown_active_slot(struct active_request_slot *slot) |
29508e1e | 740 | { |
028c2976 MH |
741 | active_requests--; |
742 | slot->in_use = 0; | |
53f31389 MW |
743 | } |
744 | ||
83e41e2e | 745 | static void release_active_slot(struct active_request_slot *slot) |
53f31389 MW |
746 | { |
747 | closedown_active_slot(slot); | |
ad75ebe5 | 748 | if (slot->curl && curl_session_count > min_curl_sessions) { |
b3ca4e4e | 749 | #ifdef USE_CURL_MULTI |
53f31389 | 750 | curl_multi_remove_handle(curlm, slot->curl); |
b3ca4e4e | 751 | #endif |
53f31389 MW |
752 | curl_easy_cleanup(slot->curl); |
753 | slot->curl = NULL; | |
ad75ebe5 | 754 | curl_session_count--; |
53f31389 | 755 | } |
b3ca4e4e | 756 | #ifdef USE_CURL_MULTI |
53f31389 | 757 | fill_active_slots(); |
b3ca4e4e | 758 | #endif |
53f31389 MW |
759 | } |
760 | ||
de1a2fdd | 761 | void finish_active_slot(struct active_request_slot *slot) |
53f31389 MW |
762 | { |
763 | closedown_active_slot(slot); | |
028c2976 | 764 | curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CODE, &slot->http_code); |
c8568e13 | 765 | |
baa7b67d NH |
766 | if (slot->finished != NULL) |
767 | (*slot->finished) = 1; | |
768 | ||
c8568e13 NH |
769 | /* Store slot results so they can be read after the slot is reused */ |
770 | if (slot->results != NULL) { | |
771 | slot->results->curl_result = slot->curl_result; | |
772 | slot->results->http_code = slot->http_code; | |
0972ccd9 JK |
773 | #if LIBCURL_VERSION_NUM >= 0x070a08 |
774 | curl_easy_getinfo(slot->curl, CURLINFO_HTTPAUTH_AVAIL, | |
775 | &slot->results->auth_avail); | |
776 | #else | |
777 | slot->results->auth_avail = 0; | |
778 | #endif | |
c8568e13 NH |
779 | } |
780 | ||
028c2976 | 781 | /* Run callback if appropriate */ |
4251ccbd | 782 | if (slot->callback_func != NULL) |
028c2976 | 783 | slot->callback_func(slot->callback_data); |
29508e1e NH |
784 | } |
785 | ||
786 | void finish_all_active_slots(void) | |
787 | { | |
788 | struct active_request_slot *slot = active_queue_head; | |
789 | ||
790 | while (slot != NULL) | |
791 | if (slot->in_use) { | |
792 | run_active_slot(slot); | |
793 | slot = active_queue_head; | |
794 | } else { | |
795 | slot = slot->next; | |
796 | } | |
797 | } | |
d7e92806 | 798 | |
5ace994f | 799 | /* Helpers for modifying and creating URLs */ |
d7e92806 MH |
800 | static inline int needs_quote(int ch) |
801 | { | |
802 | if (((ch >= 'A') && (ch <= 'Z')) | |
803 | || ((ch >= 'a') && (ch <= 'z')) | |
804 | || ((ch >= '0') && (ch <= '9')) | |
805 | || (ch == '/') | |
806 | || (ch == '-') | |
807 | || (ch == '.')) | |
808 | return 0; | |
809 | return 1; | |
810 | } | |
811 | ||
d7e92806 MH |
812 | static char *quote_ref_url(const char *base, const char *ref) |
813 | { | |
113106e0 | 814 | struct strbuf buf = STRBUF_INIT; |
d7e92806 | 815 | const char *cp; |
113106e0 | 816 | int ch; |
d7e92806 | 817 | |
5ace994f | 818 | end_url_with_slash(&buf, base); |
113106e0 TRC |
819 | |
820 | for (cp = ref; (ch = *cp) != 0; cp++) | |
d7e92806 | 821 | if (needs_quote(ch)) |
113106e0 | 822 | strbuf_addf(&buf, "%%%02x", ch); |
d7e92806 | 823 | else |
113106e0 | 824 | strbuf_addch(&buf, *cp); |
d7e92806 | 825 | |
113106e0 | 826 | return strbuf_detach(&buf, NULL); |
d7e92806 MH |
827 | } |
828 | ||
5424bc55 TRC |
829 | void append_remote_object_url(struct strbuf *buf, const char *url, |
830 | const char *hex, | |
831 | int only_two_digit_prefix) | |
832 | { | |
800324c3 TRC |
833 | end_url_with_slash(buf, url); |
834 | ||
835 | strbuf_addf(buf, "objects/%.*s/", 2, hex); | |
5424bc55 TRC |
836 | if (!only_two_digit_prefix) |
837 | strbuf_addf(buf, "%s", hex+2); | |
838 | } | |
839 | ||
840 | char *get_remote_object_url(const char *url, const char *hex, | |
841 | int only_two_digit_prefix) | |
842 | { | |
843 | struct strbuf buf = STRBUF_INIT; | |
844 | append_remote_object_url(&buf, url, hex, only_two_digit_prefix); | |
845 | return strbuf_detach(&buf, NULL); | |
846 | } | |
847 | ||
1960897e | 848 | int handle_curl_result(struct slot_results *results) |
88097030 | 849 | { |
6d052d78 JK |
850 | /* |
851 | * If we see a failing http code with CURLE_OK, we have turned off | |
852 | * FAILONERROR (to keep the server's custom error response), and should | |
853 | * translate the code into failure here. | |
854 | */ | |
855 | if (results->curl_result == CURLE_OK && | |
856 | results->http_code >= 400) { | |
857 | results->curl_result = CURLE_HTTP_RETURNED_ERROR; | |
858 | /* | |
859 | * Normally curl will already have put the "reason phrase" | |
860 | * from the server into curl_errorstr; unfortunately without | |
861 | * FAILONERROR it is lost, so we can give only the numeric | |
862 | * status code. | |
863 | */ | |
864 | snprintf(curl_errorstr, sizeof(curl_errorstr), | |
865 | "The requested URL returned error: %ld", | |
866 | results->http_code); | |
867 | } | |
868 | ||
88097030 JK |
869 | if (results->curl_result == CURLE_OK) { |
870 | credential_approve(&http_auth); | |
871 | return HTTP_OK; | |
872 | } else if (missing_target(results)) | |
873 | return HTTP_MISSING_TARGET; | |
874 | else if (results->http_code == 401) { | |
875 | if (http_auth.username && http_auth.password) { | |
876 | credential_reject(&http_auth); | |
877 | return HTTP_NOAUTH; | |
878 | } else { | |
88097030 JK |
879 | return HTTP_REAUTH; |
880 | } | |
881 | } else { | |
3503e9ab | 882 | #if LIBCURL_VERSION_NUM >= 0x070c00 |
88097030 JK |
883 | if (!curl_errorstr[0]) |
884 | strlcpy(curl_errorstr, | |
885 | curl_easy_strerror(results->curl_result), | |
886 | sizeof(curl_errorstr)); | |
3503e9ab | 887 | #endif |
88097030 JK |
888 | return HTTP_ERROR; |
889 | } | |
890 | } | |
891 | ||
beed336c JK |
892 | int run_one_slot(struct active_request_slot *slot, |
893 | struct slot_results *results) | |
894 | { | |
895 | slot->results = results; | |
896 | if (!start_active_slot(slot)) { | |
897 | snprintf(curl_errorstr, sizeof(curl_errorstr), | |
898 | "failed to start HTTP request"); | |
899 | return HTTP_START_FAILED; | |
900 | } | |
901 | ||
902 | run_active_slot(slot); | |
903 | return handle_curl_result(results); | |
904 | } | |
905 | ||
132b70a2 JK |
906 | static CURLcode curlinfo_strbuf(CURL *curl, CURLINFO info, struct strbuf *buf) |
907 | { | |
908 | char *ptr; | |
909 | CURLcode ret; | |
910 | ||
911 | strbuf_reset(buf); | |
912 | ret = curl_easy_getinfo(curl, info, &ptr); | |
913 | if (!ret && ptr) | |
914 | strbuf_addstr(buf, ptr); | |
915 | return ret; | |
916 | } | |
917 | ||
e3131626 JK |
918 | /* |
919 | * Check for and extract a content-type parameter. "raw" | |
920 | * should be positioned at the start of the potential | |
921 | * parameter, with any whitespace already removed. | |
922 | * | |
923 | * "name" is the name of the parameter. The value is appended | |
924 | * to "out". | |
925 | */ | |
926 | static int extract_param(const char *raw, const char *name, | |
927 | struct strbuf *out) | |
928 | { | |
929 | size_t len = strlen(name); | |
930 | ||
931 | if (strncasecmp(raw, name, len)) | |
932 | return -1; | |
933 | raw += len; | |
934 | ||
935 | if (*raw != '=') | |
936 | return -1; | |
937 | raw++; | |
938 | ||
f34a655d | 939 | while (*raw && !isspace(*raw) && *raw != ';') |
e3131626 JK |
940 | strbuf_addch(out, *raw++); |
941 | return 0; | |
942 | } | |
943 | ||
bf197fd7 JK |
944 | /* |
945 | * Extract a normalized version of the content type, with any | |
946 | * spaces suppressed, all letters lowercased, and no trailing ";" | |
947 | * or parameters. | |
948 | * | |
949 | * Note that we will silently remove even invalid whitespace. For | |
950 | * example, "text / plain" is specifically forbidden by RFC 2616, | |
951 | * but "text/plain" is the only reasonable output, and this keeps | |
952 | * our code simple. | |
953 | * | |
e3131626 JK |
954 | * If the "charset" argument is not NULL, store the value of any |
955 | * charset parameter there. | |
956 | * | |
bf197fd7 | 957 | * Example: |
e3131626 | 958 | * "TEXT/PLAIN; charset=utf-8" -> "text/plain", "utf-8" |
bf197fd7 JK |
959 | * "text / plain" -> "text/plain" |
960 | */ | |
e3131626 JK |
961 | static void extract_content_type(struct strbuf *raw, struct strbuf *type, |
962 | struct strbuf *charset) | |
bf197fd7 JK |
963 | { |
964 | const char *p; | |
965 | ||
966 | strbuf_reset(type); | |
967 | strbuf_grow(type, raw->len); | |
968 | for (p = raw->buf; *p; p++) { | |
969 | if (isspace(*p)) | |
970 | continue; | |
e3131626 JK |
971 | if (*p == ';') { |
972 | p++; | |
bf197fd7 | 973 | break; |
e3131626 | 974 | } |
bf197fd7 JK |
975 | strbuf_addch(type, tolower(*p)); |
976 | } | |
e3131626 JK |
977 | |
978 | if (!charset) | |
979 | return; | |
980 | ||
981 | strbuf_reset(charset); | |
982 | while (*p) { | |
f34a655d | 983 | while (isspace(*p) || *p == ';') |
e3131626 JK |
984 | p++; |
985 | if (!extract_param(p, "charset", charset)) | |
986 | return; | |
987 | while (*p && !isspace(*p)) | |
988 | p++; | |
989 | } | |
c553fd1c JK |
990 | |
991 | if (!charset->len && starts_with(type->buf, "text/")) | |
992 | strbuf_addstr(charset, "ISO-8859-1"); | |
bf197fd7 JK |
993 | } |
994 | ||
f18604bb YE |
995 | static void write_accept_language(struct strbuf *buf) |
996 | { | |
997 | /* | |
998 | * MAX_DECIMAL_PLACES must not be larger than 3. If it is larger than | |
999 | * that, q-value will be smaller than 0.001, the minimum q-value the | |
1000 | * HTTP specification allows. See | |
1001 | * http://tools.ietf.org/html/rfc7231#section-5.3.1 for q-value. | |
1002 | */ | |
1003 | const int MAX_DECIMAL_PLACES = 3; | |
1004 | const int MAX_LANGUAGE_TAGS = 1000; | |
1005 | const int MAX_ACCEPT_LANGUAGE_HEADER_SIZE = 4000; | |
1006 | char **language_tags = NULL; | |
1007 | int num_langs = 0; | |
1008 | const char *s = get_preferred_languages(); | |
1009 | int i; | |
1010 | struct strbuf tag = STRBUF_INIT; | |
1011 | ||
1012 | /* Don't add Accept-Language header if no language is preferred. */ | |
1013 | if (!s) | |
1014 | return; | |
1015 | ||
1016 | /* | |
1017 | * Split the colon-separated string of preferred languages into | |
1018 | * language_tags array. | |
1019 | */ | |
1020 | do { | |
1021 | /* collect language tag */ | |
1022 | for (; *s && (isalnum(*s) || *s == '_'); s++) | |
1023 | strbuf_addch(&tag, *s == '_' ? '-' : *s); | |
1024 | ||
1025 | /* skip .codeset, @modifier and any other unnecessary parts */ | |
1026 | while (*s && *s != ':') | |
1027 | s++; | |
1028 | ||
1029 | if (tag.len) { | |
1030 | num_langs++; | |
1031 | REALLOC_ARRAY(language_tags, num_langs); | |
1032 | language_tags[num_langs - 1] = strbuf_detach(&tag, NULL); | |
1033 | if (num_langs >= MAX_LANGUAGE_TAGS - 1) /* -1 for '*' */ | |
1034 | break; | |
1035 | } | |
1036 | } while (*s++); | |
1037 | ||
1038 | /* write Accept-Language header into buf */ | |
1039 | if (num_langs) { | |
1040 | int last_buf_len = 0; | |
1041 | int max_q; | |
1042 | int decimal_places; | |
1043 | char q_format[32]; | |
1044 | ||
1045 | /* add '*' */ | |
1046 | REALLOC_ARRAY(language_tags, num_langs + 1); | |
1047 | language_tags[num_langs++] = "*"; /* it's OK; this won't be freed */ | |
1048 | ||
1049 | /* compute decimal_places */ | |
1050 | for (max_q = 1, decimal_places = 0; | |
1051 | max_q < num_langs && decimal_places <= MAX_DECIMAL_PLACES; | |
1052 | decimal_places++, max_q *= 10) | |
1053 | ; | |
1054 | ||
1055 | sprintf(q_format, ";q=0.%%0%dd", decimal_places); | |
1056 | ||
1057 | strbuf_addstr(buf, "Accept-Language: "); | |
1058 | ||
1059 | for (i = 0; i < num_langs; i++) { | |
1060 | if (i > 0) | |
1061 | strbuf_addstr(buf, ", "); | |
1062 | ||
1063 | strbuf_addstr(buf, language_tags[i]); | |
1064 | ||
1065 | if (i > 0) | |
1066 | strbuf_addf(buf, q_format, max_q - i); | |
1067 | ||
1068 | if (buf->len > MAX_ACCEPT_LANGUAGE_HEADER_SIZE) { | |
1069 | strbuf_remove(buf, last_buf_len, buf->len - last_buf_len); | |
1070 | break; | |
1071 | } | |
1072 | ||
1073 | last_buf_len = buf->len; | |
1074 | } | |
1075 | } | |
1076 | ||
1077 | /* free language tags -- last one is a static '*' */ | |
1078 | for (i = 0; i < num_langs - 1; i++) | |
1079 | free(language_tags[i]); | |
1080 | free(language_tags); | |
1081 | } | |
1082 | ||
1083 | /* | |
1084 | * Get an Accept-Language header which indicates user's preferred languages. | |
1085 | * | |
1086 | * Examples: | |
1087 | * LANGUAGE= -> "" | |
1088 | * LANGUAGE=ko:en -> "Accept-Language: ko, en; q=0.9, *; q=0.1" | |
1089 | * LANGUAGE=ko_KR.UTF-8:sr@latin -> "Accept-Language: ko-KR, sr; q=0.9, *; q=0.1" | |
1090 | * LANGUAGE=ko LANG=en_US.UTF-8 -> "Accept-Language: ko, *; q=0.1" | |
1091 | * LANGUAGE= LANG=en_US.UTF-8 -> "Accept-Language: en-US, *; q=0.1" | |
1092 | * LANGUAGE= LANG=C -> "" | |
1093 | */ | |
1094 | static const char *get_accept_language(void) | |
1095 | { | |
1096 | if (!cached_accept_language) { | |
1097 | struct strbuf buf = STRBUF_INIT; | |
1098 | write_accept_language(&buf); | |
1099 | if (buf.len > 0) | |
1100 | cached_accept_language = strbuf_detach(&buf, NULL); | |
1101 | } | |
1102 | ||
1103 | return cached_accept_language; | |
1104 | } | |
1105 | ||
e929cd20 MH |
1106 | /* http_request() targets */ |
1107 | #define HTTP_REQUEST_STRBUF 0 | |
1108 | #define HTTP_REQUEST_FILE 1 | |
1109 | ||
1bbcc224 JK |
1110 | static int http_request(const char *url, |
1111 | void *result, int target, | |
1112 | const struct http_get_options *options) | |
e929cd20 MH |
1113 | { |
1114 | struct active_request_slot *slot; | |
1115 | struct slot_results results; | |
1116 | struct curl_slist *headers = NULL; | |
1117 | struct strbuf buf = STRBUF_INIT; | |
f18604bb | 1118 | const char *accept_language; |
e929cd20 MH |
1119 | int ret; |
1120 | ||
1121 | slot = get_active_slot(); | |
e929cd20 MH |
1122 | curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1); |
1123 | ||
1124 | if (result == NULL) { | |
1125 | curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 1); | |
1126 | } else { | |
1127 | curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0); | |
1128 | curl_easy_setopt(slot->curl, CURLOPT_FILE, result); | |
1129 | ||
1130 | if (target == HTTP_REQUEST_FILE) { | |
1131 | long posn = ftell(result); | |
1132 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, | |
1133 | fwrite); | |
1134 | if (posn > 0) { | |
1135 | strbuf_addf(&buf, "Range: bytes=%ld-", posn); | |
1136 | headers = curl_slist_append(headers, buf.buf); | |
1137 | strbuf_reset(&buf); | |
1138 | } | |
e929cd20 MH |
1139 | } else |
1140 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, | |
1141 | fwrite_buffer); | |
1142 | } | |
1143 | ||
f18604bb YE |
1144 | accept_language = get_accept_language(); |
1145 | ||
1146 | if (accept_language) | |
1147 | headers = curl_slist_append(headers, accept_language); | |
1148 | ||
e929cd20 | 1149 | strbuf_addstr(&buf, "Pragma:"); |
1bbcc224 | 1150 | if (options && options->no_cache) |
e929cd20 | 1151 | strbuf_addstr(&buf, " no-cache"); |
1bbcc224 | 1152 | if (options && options->keep_error) |
6d052d78 | 1153 | curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 0); |
e929cd20 MH |
1154 | |
1155 | headers = curl_slist_append(headers, buf.buf); | |
1156 | ||
1157 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
1158 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers); | |
aa90b969 | 1159 | curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "gzip"); |
e929cd20 | 1160 | |
beed336c | 1161 | ret = run_one_slot(slot, &results); |
e929cd20 | 1162 | |
bf197fd7 JK |
1163 | if (options && options->content_type) { |
1164 | struct strbuf raw = STRBUF_INIT; | |
1165 | curlinfo_strbuf(slot->curl, CURLINFO_CONTENT_TYPE, &raw); | |
e3131626 JK |
1166 | extract_content_type(&raw, options->content_type, |
1167 | options->charset); | |
bf197fd7 JK |
1168 | strbuf_release(&raw); |
1169 | } | |
4656bf47 | 1170 | |
78868962 JK |
1171 | if (options && options->effective_url) |
1172 | curlinfo_strbuf(slot->curl, CURLINFO_EFFECTIVE_URL, | |
1173 | options->effective_url); | |
4656bf47 | 1174 | |
e929cd20 MH |
1175 | curl_slist_free_all(headers); |
1176 | strbuf_release(&buf); | |
1177 | ||
1178 | return ret; | |
1179 | } | |
1180 | ||
c93c92f3 JK |
1181 | /* |
1182 | * Update the "base" url to a more appropriate value, as deduced by | |
1183 | * redirects seen when requesting a URL starting with "url". | |
1184 | * | |
1185 | * The "asked" parameter is a URL that we asked curl to access, and must begin | |
1186 | * with "base". | |
1187 | * | |
1188 | * The "got" parameter is the URL that curl reported to us as where we ended | |
1189 | * up. | |
1190 | * | |
1191 | * Returns 1 if we updated the base url, 0 otherwise. | |
1192 | * | |
1193 | * Our basic strategy is to compare "base" and "asked" to find the bits | |
1194 | * specific to our request. We then strip those bits off of "got" to yield the | |
1195 | * new base. So for example, if our base is "http://example.com/foo.git", | |
1196 | * and we ask for "http://example.com/foo.git/info/refs", we might end up | |
1197 | * with "https://other.example.com/foo.git/info/refs". We would want the | |
1198 | * new URL to become "https://other.example.com/foo.git". | |
1199 | * | |
1200 | * Note that this assumes a sane redirect scheme. It's entirely possible | |
1201 | * in the example above to end up at a URL that does not even end in | |
1202 | * "info/refs". In such a case we simply punt, as there is not much we can | |
1203 | * do (and such a scheme is unlikely to represent a real git repository, | |
1204 | * which means we are likely about to abort anyway). | |
1205 | */ | |
1206 | static int update_url_from_redirect(struct strbuf *base, | |
1207 | const char *asked, | |
1208 | const struct strbuf *got) | |
1209 | { | |
1210 | const char *tail; | |
1211 | size_t tail_len; | |
1212 | ||
1213 | if (!strcmp(asked, got->buf)) | |
1214 | return 0; | |
1215 | ||
de8118e1 | 1216 | if (!skip_prefix(asked, base->buf, &tail)) |
c93c92f3 JK |
1217 | die("BUG: update_url_from_redirect: %s is not a superset of %s", |
1218 | asked, base->buf); | |
1219 | ||
c93c92f3 JK |
1220 | tail_len = strlen(tail); |
1221 | ||
1222 | if (got->len < tail_len || | |
1223 | strcmp(tail, got->buf + got->len - tail_len)) | |
1224 | return 0; /* insane redirect scheme */ | |
1225 | ||
1226 | strbuf_reset(base); | |
1227 | strbuf_add(base, got->buf, got->len - tail_len); | |
1228 | return 1; | |
1229 | } | |
1230 | ||
4656bf47 | 1231 | static int http_request_reauth(const char *url, |
4656bf47 | 1232 | void *result, int target, |
1bbcc224 | 1233 | struct http_get_options *options) |
8d677edc | 1234 | { |
1bbcc224 | 1235 | int ret = http_request(url, result, target, options); |
c93c92f3 JK |
1236 | |
1237 | if (options && options->effective_url && options->base_url) { | |
1238 | if (update_url_from_redirect(options->base_url, | |
1239 | url, options->effective_url)) { | |
1240 | credential_from_url(&http_auth, options->base_url->buf); | |
1241 | url = options->effective_url->buf; | |
1242 | } | |
1243 | } | |
1244 | ||
8d677edc JK |
1245 | if (ret != HTTP_REAUTH) |
1246 | return ret; | |
6d052d78 JK |
1247 | |
1248 | /* | |
1249 | * If we are using KEEP_ERROR, the previous request may have | |
1250 | * put cruft into our output stream; we should clear it out before | |
1251 | * making our next request. We only know how to do this for | |
1252 | * the strbuf case, but that is enough to satisfy current callers. | |
1253 | */ | |
1bbcc224 | 1254 | if (options && options->keep_error) { |
6d052d78 JK |
1255 | switch (target) { |
1256 | case HTTP_REQUEST_STRBUF: | |
1257 | strbuf_reset(result); | |
1258 | break; | |
1259 | default: | |
1260 | die("BUG: HTTP_KEEP_ERROR is only supported with strbufs"); | |
1261 | } | |
1262 | } | |
2501aff8 JK |
1263 | |
1264 | credential_fill(&http_auth); | |
1265 | ||
1bbcc224 | 1266 | return http_request(url, result, target, options); |
8d677edc JK |
1267 | } |
1268 | ||
4656bf47 | 1269 | int http_get_strbuf(const char *url, |
1bbcc224 JK |
1270 | struct strbuf *result, |
1271 | struct http_get_options *options) | |
e929cd20 | 1272 | { |
1bbcc224 | 1273 | return http_request_reauth(url, result, HTTP_REQUEST_STRBUF, options); |
e929cd20 MH |
1274 | } |
1275 | ||
83e41e2e | 1276 | /* |
a7793a74 | 1277 | * Downloads a URL and stores the result in the given file. |
83e41e2e JH |
1278 | * |
1279 | * If a previous interrupted download is detected (i.e. a previous temporary | |
1280 | * file is still around) the download is resumed. | |
1281 | */ | |
1bbcc224 JK |
1282 | static int http_get_file(const char *url, const char *filename, |
1283 | struct http_get_options *options) | |
e929cd20 MH |
1284 | { |
1285 | int ret; | |
1286 | struct strbuf tmpfile = STRBUF_INIT; | |
1287 | FILE *result; | |
1288 | ||
1289 | strbuf_addf(&tmpfile, "%s.temp", filename); | |
1290 | result = fopen(tmpfile.buf, "a"); | |
3d1fb769 | 1291 | if (!result) { |
e929cd20 MH |
1292 | error("Unable to open local file %s", tmpfile.buf); |
1293 | ret = HTTP_ERROR; | |
1294 | goto cleanup; | |
1295 | } | |
1296 | ||
1bbcc224 | 1297 | ret = http_request_reauth(url, result, HTTP_REQUEST_FILE, options); |
e929cd20 MH |
1298 | fclose(result); |
1299 | ||
3d1fb769 | 1300 | if (ret == HTTP_OK && move_temp_to_file(tmpfile.buf, filename)) |
e929cd20 MH |
1301 | ret = HTTP_ERROR; |
1302 | cleanup: | |
1303 | strbuf_release(&tmpfile); | |
1304 | return ret; | |
1305 | } | |
1306 | ||
c13b2633 | 1307 | int http_fetch_ref(const char *base, struct ref *ref) |
d7e92806 | 1308 | { |
1bbcc224 | 1309 | struct http_get_options options = {0}; |
d7e92806 MH |
1310 | char *url; |
1311 | struct strbuf buffer = STRBUF_INIT; | |
0d5896e1 | 1312 | int ret = -1; |
d7e92806 | 1313 | |
1bbcc224 JK |
1314 | options.no_cache = 1; |
1315 | ||
c13b2633 | 1316 | url = quote_ref_url(base, ref->name); |
1bbcc224 | 1317 | if (http_get_strbuf(url, &buffer, &options) == HTTP_OK) { |
0d5896e1 MH |
1318 | strbuf_rtrim(&buffer); |
1319 | if (buffer.len == 40) | |
1320 | ret = get_sha1_hex(buffer.buf, ref->old_sha1); | |
59556548 | 1321 | else if (starts_with(buffer.buf, "ref: ")) { |
0d5896e1 MH |
1322 | ref->symref = xstrdup(buffer.buf + 5); |
1323 | ret = 0; | |
d7e92806 | 1324 | } |
d7e92806 MH |
1325 | } |
1326 | ||
1327 | strbuf_release(&buffer); | |
1328 | free(url); | |
1329 | return ret; | |
1330 | } | |
b8caac2b TRC |
1331 | |
1332 | /* Helpers for fetching packs */ | |
750ef425 | 1333 | static char *fetch_pack_index(unsigned char *sha1, const char *base_url) |
b8caac2b | 1334 | { |
750ef425 | 1335 | char *url, *tmp; |
b8caac2b | 1336 | struct strbuf buf = STRBUF_INIT; |
b8caac2b | 1337 | |
b8caac2b | 1338 | if (http_is_verbose) |
162eb5f8 | 1339 | fprintf(stderr, "Getting index for pack %s\n", sha1_to_hex(sha1)); |
b8caac2b TRC |
1340 | |
1341 | end_url_with_slash(&buf, base_url); | |
162eb5f8 | 1342 | strbuf_addf(&buf, "objects/pack/pack-%s.idx", sha1_to_hex(sha1)); |
b8caac2b TRC |
1343 | url = strbuf_detach(&buf, NULL); |
1344 | ||
750ef425 SP |
1345 | strbuf_addf(&buf, "%s.temp", sha1_pack_index_name(sha1)); |
1346 | tmp = strbuf_detach(&buf, NULL); | |
1347 | ||
70900eda | 1348 | if (http_get_file(url, tmp, NULL) != HTTP_OK) { |
82247e9b | 1349 | error("Unable to get pack index %s", url); |
750ef425 SP |
1350 | free(tmp); |
1351 | tmp = NULL; | |
1352 | } | |
b8caac2b | 1353 | |
b8caac2b | 1354 | free(url); |
750ef425 | 1355 | return tmp; |
b8caac2b TRC |
1356 | } |
1357 | ||
1358 | static int fetch_and_setup_pack_index(struct packed_git **packs_head, | |
1359 | unsigned char *sha1, const char *base_url) | |
1360 | { | |
1361 | struct packed_git *new_pack; | |
750ef425 SP |
1362 | char *tmp_idx = NULL; |
1363 | int ret; | |
b8caac2b | 1364 | |
750ef425 SP |
1365 | if (has_pack_index(sha1)) { |
1366 | new_pack = parse_pack_index(sha1, NULL); | |
1367 | if (!new_pack) | |
1368 | return -1; /* parse_pack_index() already issued error message */ | |
1369 | goto add_pack; | |
1370 | } | |
1371 | ||
1372 | tmp_idx = fetch_pack_index(sha1, base_url); | |
1373 | if (!tmp_idx) | |
b8caac2b TRC |
1374 | return -1; |
1375 | ||
750ef425 SP |
1376 | new_pack = parse_pack_index(sha1, tmp_idx); |
1377 | if (!new_pack) { | |
1378 | unlink(tmp_idx); | |
1379 | free(tmp_idx); | |
1380 | ||
b8caac2b | 1381 | return -1; /* parse_pack_index() already issued error message */ |
750ef425 SP |
1382 | } |
1383 | ||
1384 | ret = verify_pack_index(new_pack); | |
1385 | if (!ret) { | |
1386 | close_pack_index(new_pack); | |
1387 | ret = move_temp_to_file(tmp_idx, sha1_pack_index_name(sha1)); | |
1388 | } | |
1389 | free(tmp_idx); | |
1390 | if (ret) | |
1391 | return -1; | |
1392 | ||
1393 | add_pack: | |
b8caac2b TRC |
1394 | new_pack->next = *packs_head; |
1395 | *packs_head = new_pack; | |
1396 | return 0; | |
1397 | } | |
1398 | ||
1399 | int http_get_info_packs(const char *base_url, struct packed_git **packs_head) | |
1400 | { | |
1bbcc224 | 1401 | struct http_get_options options = {0}; |
b8caac2b TRC |
1402 | int ret = 0, i = 0; |
1403 | char *url, *data; | |
1404 | struct strbuf buf = STRBUF_INIT; | |
1405 | unsigned char sha1[20]; | |
1406 | ||
1407 | end_url_with_slash(&buf, base_url); | |
1408 | strbuf_addstr(&buf, "objects/info/packs"); | |
1409 | url = strbuf_detach(&buf, NULL); | |
1410 | ||
1bbcc224 JK |
1411 | options.no_cache = 1; |
1412 | ret = http_get_strbuf(url, &buf, &options); | |
b8caac2b TRC |
1413 | if (ret != HTTP_OK) |
1414 | goto cleanup; | |
1415 | ||
1416 | data = buf.buf; | |
1417 | while (i < buf.len) { | |
1418 | switch (data[i]) { | |
1419 | case 'P': | |
1420 | i++; | |
1421 | if (i + 52 <= buf.len && | |
59556548 CC |
1422 | starts_with(data + i, " pack-") && |
1423 | starts_with(data + i + 46, ".pack\n")) { | |
b8caac2b TRC |
1424 | get_sha1_hex(data + i + 6, sha1); |
1425 | fetch_and_setup_pack_index(packs_head, sha1, | |
1426 | base_url); | |
1427 | i += 51; | |
1428 | break; | |
1429 | } | |
1430 | default: | |
1431 | while (i < buf.len && data[i] != '\n') | |
1432 | i++; | |
1433 | } | |
1434 | i++; | |
1435 | } | |
1436 | ||
1437 | cleanup: | |
1438 | free(url); | |
1439 | return ret; | |
1440 | } | |
2264dfa5 TRC |
1441 | |
1442 | void release_http_pack_request(struct http_pack_request *preq) | |
1443 | { | |
1444 | if (preq->packfile != NULL) { | |
1445 | fclose(preq->packfile); | |
1446 | preq->packfile = NULL; | |
2264dfa5 TRC |
1447 | } |
1448 | if (preq->range_header != NULL) { | |
1449 | curl_slist_free_all(preq->range_header); | |
1450 | preq->range_header = NULL; | |
1451 | } | |
1452 | preq->slot = NULL; | |
1453 | free(preq->url); | |
1454 | } | |
1455 | ||
1456 | int finish_http_pack_request(struct http_pack_request *preq) | |
1457 | { | |
2264dfa5 | 1458 | struct packed_git **lst; |
021ab6f0 | 1459 | struct packed_git *p = preq->target; |
fe72d420 | 1460 | char *tmp_idx; |
d3180279 | 1461 | struct child_process ip = CHILD_PROCESS_INIT; |
fe72d420 | 1462 | const char *ip_argv[8]; |
2264dfa5 | 1463 | |
fe72d420 | 1464 | close_pack_index(p); |
2264dfa5 | 1465 | |
3065274c SP |
1466 | fclose(preq->packfile); |
1467 | preq->packfile = NULL; | |
2264dfa5 TRC |
1468 | |
1469 | lst = preq->lst; | |
021ab6f0 | 1470 | while (*lst != p) |
2264dfa5 TRC |
1471 | lst = &((*lst)->next); |
1472 | *lst = (*lst)->next; | |
1473 | ||
fe72d420 SP |
1474 | tmp_idx = xstrdup(preq->tmpfile); |
1475 | strcpy(tmp_idx + strlen(tmp_idx) - strlen(".pack.temp"), | |
1476 | ".idx.temp"); | |
1477 | ||
1478 | ip_argv[0] = "index-pack"; | |
1479 | ip_argv[1] = "-o"; | |
1480 | ip_argv[2] = tmp_idx; | |
1481 | ip_argv[3] = preq->tmpfile; | |
1482 | ip_argv[4] = NULL; | |
1483 | ||
fe72d420 SP |
1484 | ip.argv = ip_argv; |
1485 | ip.git_cmd = 1; | |
1486 | ip.no_stdin = 1; | |
1487 | ip.no_stdout = 1; | |
1488 | ||
1489 | if (run_command(&ip)) { | |
1490 | unlink(preq->tmpfile); | |
1491 | unlink(tmp_idx); | |
1492 | free(tmp_idx); | |
2264dfa5 | 1493 | return -1; |
fe72d420 SP |
1494 | } |
1495 | ||
1496 | unlink(sha1_pack_index_name(p->sha1)); | |
2264dfa5 | 1497 | |
fe72d420 SP |
1498 | if (move_temp_to_file(preq->tmpfile, sha1_pack_name(p->sha1)) |
1499 | || move_temp_to_file(tmp_idx, sha1_pack_index_name(p->sha1))) { | |
1500 | free(tmp_idx); | |
2264dfa5 | 1501 | return -1; |
fe72d420 | 1502 | } |
2264dfa5 | 1503 | |
fe72d420 SP |
1504 | install_packed_git(p); |
1505 | free(tmp_idx); | |
2264dfa5 TRC |
1506 | return 0; |
1507 | } | |
1508 | ||
1509 | struct http_pack_request *new_http_pack_request( | |
1510 | struct packed_git *target, const char *base_url) | |
1511 | { | |
2264dfa5 TRC |
1512 | long prev_posn = 0; |
1513 | char range[RANGE_HEADER_SIZE]; | |
1514 | struct strbuf buf = STRBUF_INIT; | |
1515 | struct http_pack_request *preq; | |
1516 | ||
ec99c9a8 | 1517 | preq = xcalloc(1, sizeof(*preq)); |
2264dfa5 | 1518 | preq->target = target; |
2264dfa5 TRC |
1519 | |
1520 | end_url_with_slash(&buf, base_url); | |
1521 | strbuf_addf(&buf, "objects/pack/pack-%s.pack", | |
1522 | sha1_to_hex(target->sha1)); | |
bb99190e | 1523 | preq->url = strbuf_detach(&buf, NULL); |
2264dfa5 | 1524 | |
90d05713 TRC |
1525 | snprintf(preq->tmpfile, sizeof(preq->tmpfile), "%s.temp", |
1526 | sha1_pack_name(target->sha1)); | |
2264dfa5 TRC |
1527 | preq->packfile = fopen(preq->tmpfile, "a"); |
1528 | if (!preq->packfile) { | |
1529 | error("Unable to open local file %s for pack", | |
1530 | preq->tmpfile); | |
1531 | goto abort; | |
1532 | } | |
1533 | ||
1534 | preq->slot = get_active_slot(); | |
2264dfa5 TRC |
1535 | curl_easy_setopt(preq->slot->curl, CURLOPT_FILE, preq->packfile); |
1536 | curl_easy_setopt(preq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite); | |
bb99190e | 1537 | curl_easy_setopt(preq->slot->curl, CURLOPT_URL, preq->url); |
2264dfa5 TRC |
1538 | curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER, |
1539 | no_pragma_header); | |
1540 | ||
1541 | /* | |
1542 | * If there is data present from a previous transfer attempt, | |
1543 | * resume where it left off | |
1544 | */ | |
1545 | prev_posn = ftell(preq->packfile); | |
1546 | if (prev_posn>0) { | |
1547 | if (http_is_verbose) | |
1548 | fprintf(stderr, | |
1549 | "Resuming fetch of pack %s at byte %ld\n", | |
1550 | sha1_to_hex(target->sha1), prev_posn); | |
1551 | sprintf(range, "Range: bytes=%ld-", prev_posn); | |
1552 | preq->range_header = curl_slist_append(NULL, range); | |
1553 | curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER, | |
1554 | preq->range_header); | |
1555 | } | |
1556 | ||
1557 | return preq; | |
1558 | ||
1559 | abort: | |
bb99190e | 1560 | free(preq->url); |
5ae9ebfd | 1561 | free(preq); |
2264dfa5 TRC |
1562 | return NULL; |
1563 | } | |
5424bc55 TRC |
1564 | |
1565 | /* Helpers for fetching objects (loose) */ | |
a04ff3ec | 1566 | static size_t fwrite_sha1_file(char *ptr, size_t eltsize, size_t nmemb, |
5424bc55 TRC |
1567 | void *data) |
1568 | { | |
1569 | unsigned char expn[4096]; | |
1570 | size_t size = eltsize * nmemb; | |
1571 | int posn = 0; | |
1572 | struct http_object_request *freq = | |
1573 | (struct http_object_request *)data; | |
1574 | do { | |
1575 | ssize_t retval = xwrite(freq->localfile, | |
1576 | (char *) ptr + posn, size - posn); | |
1577 | if (retval < 0) | |
1578 | return posn; | |
1579 | posn += retval; | |
1580 | } while (posn < size); | |
1581 | ||
1582 | freq->stream.avail_in = size; | |
a04ff3ec | 1583 | freq->stream.next_in = (void *)ptr; |
5424bc55 TRC |
1584 | do { |
1585 | freq->stream.next_out = expn; | |
1586 | freq->stream.avail_out = sizeof(expn); | |
1587 | freq->zret = git_inflate(&freq->stream, Z_SYNC_FLUSH); | |
1588 | git_SHA1_Update(&freq->c, expn, | |
1589 | sizeof(expn) - freq->stream.avail_out); | |
1590 | } while (freq->stream.avail_in && freq->zret == Z_OK); | |
5424bc55 TRC |
1591 | return size; |
1592 | } | |
1593 | ||
1594 | struct http_object_request *new_http_object_request(const char *base_url, | |
1595 | unsigned char *sha1) | |
1596 | { | |
1597 | char *hex = sha1_to_hex(sha1); | |
30d6c6ea | 1598 | const char *filename; |
5424bc55 | 1599 | char prevfile[PATH_MAX]; |
5424bc55 | 1600 | int prevlocal; |
a04ff3ec | 1601 | char prev_buf[PREV_BUF_SIZE]; |
5424bc55 TRC |
1602 | ssize_t prev_read = 0; |
1603 | long prev_posn = 0; | |
1604 | char range[RANGE_HEADER_SIZE]; | |
1605 | struct curl_slist *range_header = NULL; | |
1606 | struct http_object_request *freq; | |
1607 | ||
ec99c9a8 | 1608 | freq = xcalloc(1, sizeof(*freq)); |
5424bc55 TRC |
1609 | hashcpy(freq->sha1, sha1); |
1610 | freq->localfile = -1; | |
1611 | ||
1612 | filename = sha1_file_name(sha1); | |
5424bc55 TRC |
1613 | snprintf(freq->tmpfile, sizeof(freq->tmpfile), |
1614 | "%s.temp", filename); | |
1615 | ||
1616 | snprintf(prevfile, sizeof(prevfile), "%s.prev", filename); | |
1617 | unlink_or_warn(prevfile); | |
1618 | rename(freq->tmpfile, prevfile); | |
1619 | unlink_or_warn(freq->tmpfile); | |
1620 | ||
1621 | if (freq->localfile != -1) | |
1622 | error("fd leakage in start: %d", freq->localfile); | |
1623 | freq->localfile = open(freq->tmpfile, | |
1624 | O_WRONLY | O_CREAT | O_EXCL, 0666); | |
1625 | /* | |
1626 | * This could have failed due to the "lazy directory creation"; | |
1627 | * try to mkdir the last path component. | |
1628 | */ | |
1629 | if (freq->localfile < 0 && errno == ENOENT) { | |
1630 | char *dir = strrchr(freq->tmpfile, '/'); | |
1631 | if (dir) { | |
1632 | *dir = 0; | |
1633 | mkdir(freq->tmpfile, 0777); | |
1634 | *dir = '/'; | |
1635 | } | |
1636 | freq->localfile = open(freq->tmpfile, | |
1637 | O_WRONLY | O_CREAT | O_EXCL, 0666); | |
1638 | } | |
1639 | ||
1640 | if (freq->localfile < 0) { | |
0da8b2e7 SP |
1641 | error("Couldn't create temporary file %s: %s", |
1642 | freq->tmpfile, strerror(errno)); | |
5424bc55 TRC |
1643 | goto abort; |
1644 | } | |
1645 | ||
5424bc55 TRC |
1646 | git_inflate_init(&freq->stream); |
1647 | ||
1648 | git_SHA1_Init(&freq->c); | |
1649 | ||
bb99190e | 1650 | freq->url = get_remote_object_url(base_url, hex, 0); |
5424bc55 TRC |
1651 | |
1652 | /* | |
1653 | * If a previous temp file is present, process what was already | |
1654 | * fetched. | |
1655 | */ | |
1656 | prevlocal = open(prevfile, O_RDONLY); | |
1657 | if (prevlocal != -1) { | |
1658 | do { | |
1659 | prev_read = xread(prevlocal, prev_buf, PREV_BUF_SIZE); | |
1660 | if (prev_read>0) { | |
1661 | if (fwrite_sha1_file(prev_buf, | |
1662 | 1, | |
1663 | prev_read, | |
1664 | freq) == prev_read) { | |
1665 | prev_posn += prev_read; | |
1666 | } else { | |
1667 | prev_read = -1; | |
1668 | } | |
1669 | } | |
1670 | } while (prev_read > 0); | |
1671 | close(prevlocal); | |
1672 | } | |
1673 | unlink_or_warn(prevfile); | |
1674 | ||
1675 | /* | |
1676 | * Reset inflate/SHA1 if there was an error reading the previous temp | |
1677 | * file; also rewind to the beginning of the local file. | |
1678 | */ | |
1679 | if (prev_read == -1) { | |
1680 | memset(&freq->stream, 0, sizeof(freq->stream)); | |
1681 | git_inflate_init(&freq->stream); | |
1682 | git_SHA1_Init(&freq->c); | |
1683 | if (prev_posn>0) { | |
1684 | prev_posn = 0; | |
1685 | lseek(freq->localfile, 0, SEEK_SET); | |
0c4f21e4 | 1686 | if (ftruncate(freq->localfile, 0) < 0) { |
0da8b2e7 SP |
1687 | error("Couldn't truncate temporary file %s: %s", |
1688 | freq->tmpfile, strerror(errno)); | |
0c4f21e4 JL |
1689 | goto abort; |
1690 | } | |
5424bc55 TRC |
1691 | } |
1692 | } | |
1693 | ||
1694 | freq->slot = get_active_slot(); | |
1695 | ||
1696 | curl_easy_setopt(freq->slot->curl, CURLOPT_FILE, freq); | |
1697 | curl_easy_setopt(freq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file); | |
1698 | curl_easy_setopt(freq->slot->curl, CURLOPT_ERRORBUFFER, freq->errorstr); | |
bb99190e | 1699 | curl_easy_setopt(freq->slot->curl, CURLOPT_URL, freq->url); |
5424bc55 TRC |
1700 | curl_easy_setopt(freq->slot->curl, CURLOPT_HTTPHEADER, no_pragma_header); |
1701 | ||
1702 | /* | |
1703 | * If we have successfully processed data from a previous fetch | |
1704 | * attempt, only fetch the data we don't already have. | |
1705 | */ | |
1706 | if (prev_posn>0) { | |
1707 | if (http_is_verbose) | |
1708 | fprintf(stderr, | |
1709 | "Resuming fetch of object %s at byte %ld\n", | |
1710 | hex, prev_posn); | |
1711 | sprintf(range, "Range: bytes=%ld-", prev_posn); | |
1712 | range_header = curl_slist_append(range_header, range); | |
1713 | curl_easy_setopt(freq->slot->curl, | |
1714 | CURLOPT_HTTPHEADER, range_header); | |
1715 | } | |
1716 | ||
1717 | return freq; | |
1718 | ||
5424bc55 | 1719 | abort: |
bb99190e | 1720 | free(freq->url); |
5424bc55 TRC |
1721 | free(freq); |
1722 | return NULL; | |
1723 | } | |
1724 | ||
1725 | void process_http_object_request(struct http_object_request *freq) | |
1726 | { | |
1727 | if (freq->slot == NULL) | |
1728 | return; | |
1729 | freq->curl_result = freq->slot->curl_result; | |
1730 | freq->http_code = freq->slot->http_code; | |
1731 | freq->slot = NULL; | |
1732 | } | |
1733 | ||
1734 | int finish_http_object_request(struct http_object_request *freq) | |
1735 | { | |
1736 | struct stat st; | |
1737 | ||
1738 | close(freq->localfile); | |
1739 | freq->localfile = -1; | |
1740 | ||
1741 | process_http_object_request(freq); | |
1742 | ||
1743 | if (freq->http_code == 416) { | |
bd757c18 | 1744 | warning("requested range invalid; we may already have all the data."); |
5424bc55 TRC |
1745 | } else if (freq->curl_result != CURLE_OK) { |
1746 | if (stat(freq->tmpfile, &st) == 0) | |
1747 | if (st.st_size == 0) | |
1748 | unlink_or_warn(freq->tmpfile); | |
1749 | return -1; | |
1750 | } | |
1751 | ||
1752 | git_inflate_end(&freq->stream); | |
1753 | git_SHA1_Final(freq->real_sha1, &freq->c); | |
1754 | if (freq->zret != Z_STREAM_END) { | |
1755 | unlink_or_warn(freq->tmpfile); | |
1756 | return -1; | |
1757 | } | |
1758 | if (hashcmp(freq->sha1, freq->real_sha1)) { | |
1759 | unlink_or_warn(freq->tmpfile); | |
1760 | return -1; | |
1761 | } | |
1762 | freq->rename = | |
0da8b2e7 | 1763 | move_temp_to_file(freq->tmpfile, sha1_file_name(freq->sha1)); |
5424bc55 TRC |
1764 | |
1765 | return freq->rename; | |
1766 | } | |
1767 | ||
1768 | void abort_http_object_request(struct http_object_request *freq) | |
1769 | { | |
1770 | unlink_or_warn(freq->tmpfile); | |
1771 | ||
1772 | release_http_object_request(freq); | |
1773 | } | |
1774 | ||
1775 | void release_http_object_request(struct http_object_request *freq) | |
1776 | { | |
1777 | if (freq->localfile != -1) { | |
1778 | close(freq->localfile); | |
1779 | freq->localfile = -1; | |
1780 | } | |
1781 | if (freq->url != NULL) { | |
1782 | free(freq->url); | |
1783 | freq->url = NULL; | |
1784 | } | |
4b9fa0e3 TRC |
1785 | if (freq->slot != NULL) { |
1786 | freq->slot->callback_func = NULL; | |
1787 | freq->slot->callback_data = NULL; | |
1788 | release_active_slot(freq->slot); | |
1789 | freq->slot = NULL; | |
1790 | } | |
5424bc55 | 1791 | } |