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