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