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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; |
148bb6a7 | 50 | static 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 | ||
4251ccbd | 263 | static CURL *get_curl_handle(void) |
11979b98 | 264 | { |
4251ccbd | 265 | CURL *result = curl_easy_init(); |
11979b98 | 266 | |
a5ccc597 JH |
267 | if (!curl_ssl_verify) { |
268 | curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 0); | |
269 | curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 0); | |
270 | } else { | |
271 | /* Verify authenticity of the peer's certificate */ | |
272 | curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 1); | |
273 | /* The name in the cert must match whom we tried to connect */ | |
274 | curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 2); | |
275 | } | |
276 | ||
11979b98 JH |
277 | #if LIBCURL_VERSION_NUM >= 0x070907 |
278 | curl_easy_setopt(result, CURLOPT_NETRC, CURL_NETRC_OPTIONAL); | |
279 | #endif | |
b8ac9230 | 280 | #ifdef LIBCURL_CAN_HANDLE_AUTH_ANY |
525ecd26 | 281 | curl_easy_setopt(result, CURLOPT_HTTPAUTH, CURLAUTH_ANY); |
b8ac9230 | 282 | #endif |
11979b98 | 283 | |
a4ddbc33 JK |
284 | if (http_proactive_auth) |
285 | init_curl_http_auth(result); | |
286 | ||
11979b98 JH |
287 | if (ssl_cert != NULL) |
288 | curl_easy_setopt(result, CURLOPT_SSLCERT, ssl_cert); | |
30dd9163 | 289 | if (has_cert_password()) |
148bb6a7 | 290 | curl_easy_setopt(result, CURLOPT_KEYPASSWD, cert_auth.password); |
ef52aafa | 291 | #if LIBCURL_VERSION_NUM >= 0x070903 |
11979b98 JH |
292 | if (ssl_key != NULL) |
293 | curl_easy_setopt(result, CURLOPT_SSLKEY, ssl_key); | |
294 | #endif | |
295 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
296 | if (ssl_capath != NULL) | |
297 | curl_easy_setopt(result, CURLOPT_CAPATH, ssl_capath); | |
298 | #endif | |
299 | if (ssl_cainfo != NULL) | |
300 | curl_easy_setopt(result, CURLOPT_CAINFO, ssl_cainfo); | |
11979b98 JH |
301 | |
302 | if (curl_low_speed_limit > 0 && curl_low_speed_time > 0) { | |
303 | curl_easy_setopt(result, CURLOPT_LOW_SPEED_LIMIT, | |
304 | curl_low_speed_limit); | |
305 | curl_easy_setopt(result, CURLOPT_LOW_SPEED_TIME, | |
306 | curl_low_speed_time); | |
307 | } | |
308 | ||
309 | curl_easy_setopt(result, CURLOPT_FOLLOWLOCATION, 1); | |
311e2ea0 TRC |
310 | #if LIBCURL_VERSION_NUM >= 0x071301 |
311 | curl_easy_setopt(result, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL); | |
312 | #elif LIBCURL_VERSION_NUM >= 0x071101 | |
313 | curl_easy_setopt(result, CURLOPT_POST301, 1); | |
314 | #endif | |
11979b98 | 315 | |
7982d74e MW |
316 | if (getenv("GIT_CURL_VERBOSE")) |
317 | curl_easy_setopt(result, CURLOPT_VERBOSE, 1); | |
318 | ||
b1d1058c | 319 | curl_easy_setopt(result, CURLOPT_USERAGENT, |
745c7c8e | 320 | user_agent ? user_agent : git_user_agent()); |
20fc9bc5 | 321 | |
3ea099d4 SK |
322 | if (curl_ftp_no_epsv) |
323 | curl_easy_setopt(result, CURLOPT_FTP_USE_EPSV, 0); | |
324 | ||
4bc444eb MV |
325 | #ifdef CURLOPT_USE_SSL |
326 | if (curl_ssl_try) | |
327 | curl_easy_setopt(result, CURLOPT_USE_SSL, CURLUSESSL_TRY); | |
328 | #endif | |
329 | ||
dd613997 | 330 | if (curl_http_proxy) { |
9c5665aa | 331 | curl_easy_setopt(result, CURLOPT_PROXY, curl_http_proxy); |
dd613997 NBL |
332 | curl_easy_setopt(result, CURLOPT_PROXYAUTH, CURLAUTH_ANY); |
333 | } | |
9c5665aa | 334 | |
11979b98 JH |
335 | return result; |
336 | } | |
337 | ||
7059cd99 JH |
338 | static void set_from_env(const char **var, const char *envname) |
339 | { | |
340 | const char *val = getenv(envname); | |
341 | if (val) | |
342 | *var = val; | |
343 | } | |
344 | ||
a4ddbc33 | 345 | void http_init(struct remote *remote, const char *url, int proactive_auth) |
29508e1e NH |
346 | { |
347 | char *low_speed_limit; | |
348 | char *low_speed_time; | |
6a56993b KM |
349 | char *normalized_url; |
350 | struct urlmatch_config config = { STRING_LIST_INIT_DUP }; | |
351 | ||
352 | config.section = "http"; | |
353 | config.key = NULL; | |
354 | config.collect_fn = http_options; | |
355 | config.cascade_fn = git_default_config; | |
356 | config.cb = NULL; | |
29508e1e | 357 | |
e9176745 | 358 | http_is_verbose = 0; |
6a56993b | 359 | normalized_url = url_normalize(url, &config.url); |
e9176745 | 360 | |
6a56993b KM |
361 | git_config(urlmatch_config_entry, &config); |
362 | free(normalized_url); | |
7059cd99 | 363 | |
29508e1e NH |
364 | curl_global_init(CURL_GLOBAL_ALL); |
365 | ||
a4ddbc33 JK |
366 | http_proactive_auth = proactive_auth; |
367 | ||
9fc6440d MH |
368 | if (remote && remote->http_proxy) |
369 | curl_http_proxy = xstrdup(remote->http_proxy); | |
370 | ||
29508e1e | 371 | pragma_header = curl_slist_append(pragma_header, "Pragma: no-cache"); |
e9176745 | 372 | no_pragma_header = curl_slist_append(no_pragma_header, "Pragma:"); |
29508e1e NH |
373 | |
374 | #ifdef USE_CURL_MULTI | |
375 | { | |
376 | char *http_max_requests = getenv("GIT_HTTP_MAX_REQUESTS"); | |
377 | if (http_max_requests != NULL) | |
378 | max_requests = atoi(http_max_requests); | |
379 | } | |
380 | ||
381 | curlm = curl_multi_init(); | |
382 | if (curlm == NULL) { | |
383 | fprintf(stderr, "Error creating curl multi handle.\n"); | |
384 | exit(1); | |
385 | } | |
386 | #endif | |
387 | ||
388 | if (getenv("GIT_SSL_NO_VERIFY")) | |
389 | curl_ssl_verify = 0; | |
390 | ||
7059cd99 | 391 | set_from_env(&ssl_cert, "GIT_SSL_CERT"); |
ef52aafa | 392 | #if LIBCURL_VERSION_NUM >= 0x070903 |
7059cd99 | 393 | set_from_env(&ssl_key, "GIT_SSL_KEY"); |
29508e1e NH |
394 | #endif |
395 | #if LIBCURL_VERSION_NUM >= 0x070908 | |
7059cd99 | 396 | set_from_env(&ssl_capath, "GIT_SSL_CAPATH"); |
29508e1e | 397 | #endif |
7059cd99 | 398 | set_from_env(&ssl_cainfo, "GIT_SSL_CAINFO"); |
29508e1e | 399 | |
b1d1058c SO |
400 | set_from_env(&user_agent, "GIT_HTTP_USER_AGENT"); |
401 | ||
29508e1e NH |
402 | low_speed_limit = getenv("GIT_HTTP_LOW_SPEED_LIMIT"); |
403 | if (low_speed_limit != NULL) | |
404 | curl_low_speed_limit = strtol(low_speed_limit, NULL, 10); | |
405 | low_speed_time = getenv("GIT_HTTP_LOW_SPEED_TIME"); | |
406 | if (low_speed_time != NULL) | |
407 | curl_low_speed_time = strtol(low_speed_time, NULL, 10); | |
408 | ||
29508e1e NH |
409 | if (curl_ssl_verify == -1) |
410 | curl_ssl_verify = 1; | |
411 | ||
ad75ebe5 | 412 | curl_session_count = 0; |
29508e1e NH |
413 | #ifdef USE_CURL_MULTI |
414 | if (max_requests < 1) | |
415 | max_requests = DEFAULT_MAX_REQUESTS; | |
416 | #endif | |
417 | ||
3ea099d4 SK |
418 | if (getenv("GIT_CURL_FTP_NO_EPSV")) |
419 | curl_ftp_no_epsv = 1; | |
420 | ||
deba4937 | 421 | if (url) { |
148bb6a7 | 422 | credential_from_url(&http_auth, url); |
754ae192 ML |
423 | if (!ssl_cert_password_required && |
424 | getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") && | |
deba4937 | 425 | !prefixcmp(url, "https://")) |
30dd9163 ML |
426 | ssl_cert_password_required = 1; |
427 | } | |
c33976cb | 428 | |
29508e1e NH |
429 | #ifndef NO_CURL_EASY_DUPHANDLE |
430 | curl_default = get_curl_handle(); | |
431 | #endif | |
432 | } | |
433 | ||
434 | void http_cleanup(void) | |
435 | { | |
436 | struct active_request_slot *slot = active_queue_head; | |
29508e1e NH |
437 | |
438 | while (slot != NULL) { | |
3278cd0a | 439 | struct active_request_slot *next = slot->next; |
f23d1f76 | 440 | if (slot->curl != NULL) { |
29508e1e | 441 | #ifdef USE_CURL_MULTI |
f23d1f76 | 442 | curl_multi_remove_handle(curlm, slot->curl); |
29508e1e | 443 | #endif |
29508e1e | 444 | curl_easy_cleanup(slot->curl); |
f23d1f76 | 445 | } |
3278cd0a SP |
446 | free(slot); |
447 | slot = next; | |
29508e1e | 448 | } |
3278cd0a | 449 | active_queue_head = NULL; |
29508e1e NH |
450 | |
451 | #ifndef NO_CURL_EASY_DUPHANDLE | |
452 | curl_easy_cleanup(curl_default); | |
453 | #endif | |
454 | ||
455 | #ifdef USE_CURL_MULTI | |
456 | curl_multi_cleanup(curlm); | |
457 | #endif | |
458 | curl_global_cleanup(); | |
b3ca4e4e NH |
459 | |
460 | curl_slist_free_all(pragma_header); | |
3278cd0a | 461 | pragma_header = NULL; |
9fc6440d | 462 | |
e9176745 TRC |
463 | curl_slist_free_all(no_pragma_header); |
464 | no_pragma_header = NULL; | |
465 | ||
9fc6440d | 466 | if (curl_http_proxy) { |
e4a80ecf | 467 | free((void *)curl_http_proxy); |
9fc6440d MH |
468 | curl_http_proxy = NULL; |
469 | } | |
30dd9163 | 470 | |
148bb6a7 JK |
471 | if (cert_auth.password != NULL) { |
472 | memset(cert_auth.password, 0, strlen(cert_auth.password)); | |
473 | free(cert_auth.password); | |
474 | cert_auth.password = NULL; | |
30dd9163 ML |
475 | } |
476 | ssl_cert_password_required = 0; | |
29508e1e NH |
477 | } |
478 | ||
29508e1e NH |
479 | struct active_request_slot *get_active_slot(void) |
480 | { | |
481 | struct active_request_slot *slot = active_queue_head; | |
482 | struct active_request_slot *newslot; | |
483 | ||
484 | #ifdef USE_CURL_MULTI | |
485 | int num_transfers; | |
486 | ||
487 | /* Wait for a slot to open up if the queue is full */ | |
488 | while (active_requests >= max_requests) { | |
489 | curl_multi_perform(curlm, &num_transfers); | |
4251ccbd | 490 | if (num_transfers < active_requests) |
29508e1e | 491 | process_curl_messages(); |
29508e1e NH |
492 | } |
493 | #endif | |
494 | ||
4251ccbd | 495 | while (slot != NULL && slot->in_use) |
29508e1e | 496 | slot = slot->next; |
4251ccbd | 497 | |
29508e1e NH |
498 | if (slot == NULL) { |
499 | newslot = xmalloc(sizeof(*newslot)); | |
500 | newslot->curl = NULL; | |
501 | newslot->in_use = 0; | |
502 | newslot->next = NULL; | |
503 | ||
504 | slot = active_queue_head; | |
505 | if (slot == NULL) { | |
506 | active_queue_head = newslot; | |
507 | } else { | |
4251ccbd | 508 | while (slot->next != NULL) |
29508e1e | 509 | slot = slot->next; |
29508e1e NH |
510 | slot->next = newslot; |
511 | } | |
512 | slot = newslot; | |
513 | } | |
514 | ||
515 | if (slot->curl == NULL) { | |
516 | #ifdef NO_CURL_EASY_DUPHANDLE | |
517 | slot->curl = get_curl_handle(); | |
518 | #else | |
519 | slot->curl = curl_easy_duphandle(curl_default); | |
520 | #endif | |
ad75ebe5 | 521 | curl_session_count++; |
29508e1e NH |
522 | } |
523 | ||
524 | active_requests++; | |
525 | slot->in_use = 1; | |
c8568e13 | 526 | slot->results = NULL; |
baa7b67d | 527 | slot->finished = NULL; |
29508e1e NH |
528 | slot->callback_data = NULL; |
529 | slot->callback_func = NULL; | |
bcfb95dd | 530 | curl_easy_setopt(slot->curl, CURLOPT_COOKIEFILE, curl_cookie_file); |
912b2acf DB |
531 | if (curl_save_cookies) |
532 | curl_easy_setopt(slot->curl, CURLOPT_COOKIEJAR, curl_cookie_file); | |
29508e1e | 533 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, pragma_header); |
29508e1e | 534 | curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, curl_errorstr); |
9094950d NH |
535 | curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, NULL); |
536 | curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, NULL); | |
537 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, NULL); | |
1e41827d | 538 | curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, NULL); |
9094950d NH |
539 | curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 0); |
540 | curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1); | |
b793acf1 | 541 | curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 1); |
dfa1725a JK |
542 | if (http_auth.password) |
543 | init_curl_http_auth(slot->curl); | |
29508e1e NH |
544 | |
545 | return slot; | |
546 | } | |
547 | ||
548 | int start_active_slot(struct active_request_slot *slot) | |
549 | { | |
550 | #ifdef USE_CURL_MULTI | |
551 | CURLMcode curlm_result = curl_multi_add_handle(curlm, slot->curl); | |
45c17412 | 552 | int num_transfers; |
29508e1e NH |
553 | |
554 | if (curlm_result != CURLM_OK && | |
555 | curlm_result != CURLM_CALL_MULTI_PERFORM) { | |
556 | active_requests--; | |
557 | slot->in_use = 0; | |
558 | return 0; | |
559 | } | |
45c17412 DB |
560 | |
561 | /* | |
562 | * We know there must be something to do, since we just added | |
563 | * something. | |
564 | */ | |
565 | curl_multi_perform(curlm, &num_transfers); | |
29508e1e NH |
566 | #endif |
567 | return 1; | |
568 | } | |
569 | ||
570 | #ifdef USE_CURL_MULTI | |
fc57b6aa DB |
571 | struct fill_chain { |
572 | void *data; | |
573 | int (*fill)(void *); | |
574 | struct fill_chain *next; | |
575 | }; | |
576 | ||
4251ccbd | 577 | static struct fill_chain *fill_cfg; |
fc57b6aa DB |
578 | |
579 | void add_fill_function(void *data, int (*fill)(void *)) | |
580 | { | |
e8eec71d | 581 | struct fill_chain *new = xmalloc(sizeof(*new)); |
fc57b6aa DB |
582 | struct fill_chain **linkp = &fill_cfg; |
583 | new->data = data; | |
584 | new->fill = fill; | |
585 | new->next = NULL; | |
586 | while (*linkp) | |
587 | linkp = &(*linkp)->next; | |
588 | *linkp = new; | |
589 | } | |
590 | ||
45c17412 DB |
591 | void fill_active_slots(void) |
592 | { | |
593 | struct active_request_slot *slot = active_queue_head; | |
594 | ||
fc57b6aa DB |
595 | while (active_requests < max_requests) { |
596 | struct fill_chain *fill; | |
597 | for (fill = fill_cfg; fill; fill = fill->next) | |
598 | if (fill->fill(fill->data)) | |
599 | break; | |
600 | ||
601 | if (!fill) | |
45c17412 | 602 | break; |
fc57b6aa | 603 | } |
45c17412 DB |
604 | |
605 | while (slot != NULL) { | |
ad75ebe5 TRC |
606 | if (!slot->in_use && slot->curl != NULL |
607 | && curl_session_count > min_curl_sessions) { | |
45c17412 DB |
608 | curl_easy_cleanup(slot->curl); |
609 | slot->curl = NULL; | |
ad75ebe5 | 610 | curl_session_count--; |
45c17412 DB |
611 | } |
612 | slot = slot->next; | |
613 | } | |
614 | } | |
615 | ||
29508e1e NH |
616 | void step_active_slots(void) |
617 | { | |
618 | int num_transfers; | |
619 | CURLMcode curlm_result; | |
620 | ||
621 | do { | |
622 | curlm_result = curl_multi_perform(curlm, &num_transfers); | |
623 | } while (curlm_result == CURLM_CALL_MULTI_PERFORM); | |
624 | if (num_transfers < active_requests) { | |
625 | process_curl_messages(); | |
626 | fill_active_slots(); | |
627 | } | |
628 | } | |
629 | #endif | |
630 | ||
631 | void run_active_slot(struct active_request_slot *slot) | |
632 | { | |
633 | #ifdef USE_CURL_MULTI | |
29508e1e NH |
634 | fd_set readfds; |
635 | fd_set writefds; | |
636 | fd_set excfds; | |
637 | int max_fd; | |
638 | struct timeval select_timeout; | |
baa7b67d | 639 | int finished = 0; |
29508e1e | 640 | |
baa7b67d NH |
641 | slot->finished = &finished; |
642 | while (!finished) { | |
29508e1e NH |
643 | step_active_slots(); |
644 | ||
df26c471 | 645 | if (slot->in_use) { |
eb56c821 MF |
646 | #if LIBCURL_VERSION_NUM >= 0x070f04 |
647 | long curl_timeout; | |
648 | curl_multi_timeout(curlm, &curl_timeout); | |
649 | if (curl_timeout == 0) { | |
650 | continue; | |
651 | } else if (curl_timeout == -1) { | |
652 | select_timeout.tv_sec = 0; | |
653 | select_timeout.tv_usec = 50000; | |
654 | } else { | |
655 | select_timeout.tv_sec = curl_timeout / 1000; | |
656 | select_timeout.tv_usec = (curl_timeout % 1000) * 1000; | |
657 | } | |
658 | #else | |
659 | select_timeout.tv_sec = 0; | |
660 | select_timeout.tv_usec = 50000; | |
661 | #endif | |
29508e1e | 662 | |
6f9dd67f | 663 | max_fd = -1; |
29508e1e NH |
664 | FD_ZERO(&readfds); |
665 | FD_ZERO(&writefds); | |
666 | FD_ZERO(&excfds); | |
6f9dd67f | 667 | curl_multi_fdset(curlm, &readfds, &writefds, &excfds, &max_fd); |
eb56c821 | 668 | |
7202b81f SZ |
669 | /* |
670 | * It can happen that curl_multi_timeout returns a pathologically | |
671 | * long timeout when curl_multi_fdset returns no file descriptors | |
672 | * to read. See commit message for more details. | |
673 | */ | |
674 | if (max_fd < 0 && | |
675 | (select_timeout.tv_sec > 0 || | |
676 | select_timeout.tv_usec > 50000)) { | |
677 | select_timeout.tv_sec = 0; | |
678 | select_timeout.tv_usec = 50000; | |
679 | } | |
680 | ||
6f9dd67f | 681 | select(max_fd+1, &readfds, &writefds, &excfds, &select_timeout); |
29508e1e NH |
682 | } |
683 | } | |
684 | #else | |
685 | while (slot->in_use) { | |
686 | slot->curl_result = curl_easy_perform(slot->curl); | |
687 | finish_active_slot(slot); | |
688 | } | |
689 | #endif | |
690 | } | |
691 | ||
53f31389 | 692 | static void closedown_active_slot(struct active_request_slot *slot) |
29508e1e | 693 | { |
028c2976 MH |
694 | active_requests--; |
695 | slot->in_use = 0; | |
53f31389 MW |
696 | } |
697 | ||
83e41e2e | 698 | static void release_active_slot(struct active_request_slot *slot) |
53f31389 MW |
699 | { |
700 | closedown_active_slot(slot); | |
ad75ebe5 | 701 | if (slot->curl && curl_session_count > min_curl_sessions) { |
b3ca4e4e | 702 | #ifdef USE_CURL_MULTI |
53f31389 | 703 | curl_multi_remove_handle(curlm, slot->curl); |
b3ca4e4e | 704 | #endif |
53f31389 MW |
705 | curl_easy_cleanup(slot->curl); |
706 | slot->curl = NULL; | |
ad75ebe5 | 707 | curl_session_count--; |
53f31389 | 708 | } |
b3ca4e4e | 709 | #ifdef USE_CURL_MULTI |
53f31389 | 710 | fill_active_slots(); |
b3ca4e4e | 711 | #endif |
53f31389 MW |
712 | } |
713 | ||
de1a2fdd | 714 | void finish_active_slot(struct active_request_slot *slot) |
53f31389 MW |
715 | { |
716 | closedown_active_slot(slot); | |
028c2976 | 717 | curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CODE, &slot->http_code); |
c8568e13 | 718 | |
baa7b67d NH |
719 | if (slot->finished != NULL) |
720 | (*slot->finished) = 1; | |
721 | ||
c8568e13 NH |
722 | /* Store slot results so they can be read after the slot is reused */ |
723 | if (slot->results != NULL) { | |
724 | slot->results->curl_result = slot->curl_result; | |
725 | slot->results->http_code = slot->http_code; | |
726 | } | |
727 | ||
028c2976 | 728 | /* Run callback if appropriate */ |
4251ccbd | 729 | if (slot->callback_func != NULL) |
028c2976 | 730 | slot->callback_func(slot->callback_data); |
29508e1e NH |
731 | } |
732 | ||
733 | void finish_all_active_slots(void) | |
734 | { | |
735 | struct active_request_slot *slot = active_queue_head; | |
736 | ||
737 | while (slot != NULL) | |
738 | if (slot->in_use) { | |
739 | run_active_slot(slot); | |
740 | slot = active_queue_head; | |
741 | } else { | |
742 | slot = slot->next; | |
743 | } | |
744 | } | |
d7e92806 | 745 | |
5ace994f | 746 | /* Helpers for modifying and creating URLs */ |
d7e92806 MH |
747 | static inline int needs_quote(int ch) |
748 | { | |
749 | if (((ch >= 'A') && (ch <= 'Z')) | |
750 | || ((ch >= 'a') && (ch <= 'z')) | |
751 | || ((ch >= '0') && (ch <= '9')) | |
752 | || (ch == '/') | |
753 | || (ch == '-') | |
754 | || (ch == '.')) | |
755 | return 0; | |
756 | return 1; | |
757 | } | |
758 | ||
d7e92806 MH |
759 | static char *quote_ref_url(const char *base, const char *ref) |
760 | { | |
113106e0 | 761 | struct strbuf buf = STRBUF_INIT; |
d7e92806 | 762 | const char *cp; |
113106e0 | 763 | int ch; |
d7e92806 | 764 | |
5ace994f | 765 | end_url_with_slash(&buf, base); |
113106e0 TRC |
766 | |
767 | for (cp = ref; (ch = *cp) != 0; cp++) | |
d7e92806 | 768 | if (needs_quote(ch)) |
113106e0 | 769 | strbuf_addf(&buf, "%%%02x", ch); |
d7e92806 | 770 | else |
113106e0 | 771 | strbuf_addch(&buf, *cp); |
d7e92806 | 772 | |
113106e0 | 773 | return strbuf_detach(&buf, NULL); |
d7e92806 MH |
774 | } |
775 | ||
5424bc55 TRC |
776 | void append_remote_object_url(struct strbuf *buf, const char *url, |
777 | const char *hex, | |
778 | int only_two_digit_prefix) | |
779 | { | |
800324c3 TRC |
780 | end_url_with_slash(buf, url); |
781 | ||
782 | strbuf_addf(buf, "objects/%.*s/", 2, hex); | |
5424bc55 TRC |
783 | if (!only_two_digit_prefix) |
784 | strbuf_addf(buf, "%s", hex+2); | |
785 | } | |
786 | ||
787 | char *get_remote_object_url(const char *url, const char *hex, | |
788 | int only_two_digit_prefix) | |
789 | { | |
790 | struct strbuf buf = STRBUF_INIT; | |
791 | append_remote_object_url(&buf, url, hex, only_two_digit_prefix); | |
792 | return strbuf_detach(&buf, NULL); | |
793 | } | |
794 | ||
1960897e | 795 | int handle_curl_result(struct slot_results *results) |
88097030 | 796 | { |
6d052d78 JK |
797 | /* |
798 | * If we see a failing http code with CURLE_OK, we have turned off | |
799 | * FAILONERROR (to keep the server's custom error response), and should | |
800 | * translate the code into failure here. | |
801 | */ | |
802 | if (results->curl_result == CURLE_OK && | |
803 | results->http_code >= 400) { | |
804 | results->curl_result = CURLE_HTTP_RETURNED_ERROR; | |
805 | /* | |
806 | * Normally curl will already have put the "reason phrase" | |
807 | * from the server into curl_errorstr; unfortunately without | |
808 | * FAILONERROR it is lost, so we can give only the numeric | |
809 | * status code. | |
810 | */ | |
811 | snprintf(curl_errorstr, sizeof(curl_errorstr), | |
812 | "The requested URL returned error: %ld", | |
813 | results->http_code); | |
814 | } | |
815 | ||
88097030 JK |
816 | if (results->curl_result == CURLE_OK) { |
817 | credential_approve(&http_auth); | |
818 | return HTTP_OK; | |
819 | } else if (missing_target(results)) | |
820 | return HTTP_MISSING_TARGET; | |
821 | else if (results->http_code == 401) { | |
822 | if (http_auth.username && http_auth.password) { | |
823 | credential_reject(&http_auth); | |
824 | return HTTP_NOAUTH; | |
825 | } else { | |
826 | credential_fill(&http_auth); | |
88097030 JK |
827 | return HTTP_REAUTH; |
828 | } | |
829 | } else { | |
3503e9ab | 830 | #if LIBCURL_VERSION_NUM >= 0x070c00 |
88097030 JK |
831 | if (!curl_errorstr[0]) |
832 | strlcpy(curl_errorstr, | |
833 | curl_easy_strerror(results->curl_result), | |
834 | sizeof(curl_errorstr)); | |
3503e9ab | 835 | #endif |
88097030 JK |
836 | return HTTP_ERROR; |
837 | } | |
838 | } | |
839 | ||
e929cd20 MH |
840 | /* http_request() targets */ |
841 | #define HTTP_REQUEST_STRBUF 0 | |
842 | #define HTTP_REQUEST_FILE 1 | |
843 | ||
4656bf47 SP |
844 | static int http_request(const char *url, struct strbuf *type, |
845 | void *result, int target, int options) | |
e929cd20 MH |
846 | { |
847 | struct active_request_slot *slot; | |
848 | struct slot_results results; | |
849 | struct curl_slist *headers = NULL; | |
850 | struct strbuf buf = STRBUF_INIT; | |
851 | int ret; | |
852 | ||
853 | slot = get_active_slot(); | |
854 | slot->results = &results; | |
855 | curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1); | |
856 | ||
857 | if (result == NULL) { | |
858 | curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 1); | |
859 | } else { | |
860 | curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0); | |
861 | curl_easy_setopt(slot->curl, CURLOPT_FILE, result); | |
862 | ||
863 | if (target == HTTP_REQUEST_FILE) { | |
864 | long posn = ftell(result); | |
865 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, | |
866 | fwrite); | |
867 | if (posn > 0) { | |
868 | strbuf_addf(&buf, "Range: bytes=%ld-", posn); | |
869 | headers = curl_slist_append(headers, buf.buf); | |
870 | strbuf_reset(&buf); | |
871 | } | |
e929cd20 MH |
872 | } else |
873 | curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, | |
874 | fwrite_buffer); | |
875 | } | |
876 | ||
877 | strbuf_addstr(&buf, "Pragma:"); | |
878 | if (options & HTTP_NO_CACHE) | |
879 | strbuf_addstr(&buf, " no-cache"); | |
6d052d78 JK |
880 | if (options & HTTP_KEEP_ERROR) |
881 | curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 0); | |
e929cd20 MH |
882 | |
883 | headers = curl_slist_append(headers, buf.buf); | |
884 | ||
885 | curl_easy_setopt(slot->curl, CURLOPT_URL, url); | |
886 | curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers); | |
aa90b969 | 887 | curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "gzip"); |
e929cd20 MH |
888 | |
889 | if (start_active_slot(slot)) { | |
890 | run_active_slot(slot); | |
1960897e | 891 | ret = handle_curl_result(&results); |
e929cd20 | 892 | } else { |
67d2a7b5 JK |
893 | snprintf(curl_errorstr, sizeof(curl_errorstr), |
894 | "failed to start HTTP request"); | |
e929cd20 MH |
895 | ret = HTTP_START_FAILED; |
896 | } | |
897 | ||
4656bf47 SP |
898 | if (type) { |
899 | char *t; | |
3443db51 | 900 | strbuf_reset(type); |
4656bf47 SP |
901 | curl_easy_getinfo(slot->curl, CURLINFO_CONTENT_TYPE, &t); |
902 | if (t) | |
903 | strbuf_addstr(type, t); | |
904 | } | |
905 | ||
e929cd20 MH |
906 | curl_slist_free_all(headers); |
907 | strbuf_release(&buf); | |
908 | ||
909 | return ret; | |
910 | } | |
911 | ||
4656bf47 SP |
912 | static int http_request_reauth(const char *url, |
913 | struct strbuf *type, | |
914 | void *result, int target, | |
8d677edc JK |
915 | int options) |
916 | { | |
4656bf47 | 917 | int ret = http_request(url, type, result, target, options); |
8d677edc JK |
918 | if (ret != HTTP_REAUTH) |
919 | return ret; | |
6d052d78 JK |
920 | |
921 | /* | |
922 | * If we are using KEEP_ERROR, the previous request may have | |
923 | * put cruft into our output stream; we should clear it out before | |
924 | * making our next request. We only know how to do this for | |
925 | * the strbuf case, but that is enough to satisfy current callers. | |
926 | */ | |
927 | if (options & HTTP_KEEP_ERROR) { | |
928 | switch (target) { | |
929 | case HTTP_REQUEST_STRBUF: | |
930 | strbuf_reset(result); | |
931 | break; | |
932 | default: | |
933 | die("BUG: HTTP_KEEP_ERROR is only supported with strbufs"); | |
934 | } | |
935 | } | |
4656bf47 | 936 | return http_request(url, type, result, target, options); |
8d677edc JK |
937 | } |
938 | ||
4656bf47 SP |
939 | int http_get_strbuf(const char *url, |
940 | struct strbuf *type, | |
941 | struct strbuf *result, int options) | |
e929cd20 | 942 | { |
4656bf47 SP |
943 | return http_request_reauth(url, type, result, |
944 | HTTP_REQUEST_STRBUF, options); | |
e929cd20 MH |
945 | } |
946 | ||
83e41e2e | 947 | /* |
a7793a74 | 948 | * Downloads a URL and stores the result in the given file. |
83e41e2e JH |
949 | * |
950 | * If a previous interrupted download is detected (i.e. a previous temporary | |
951 | * file is still around) the download is resumed. | |
952 | */ | |
953 | static int http_get_file(const char *url, const char *filename, int options) | |
e929cd20 MH |
954 | { |
955 | int ret; | |
956 | struct strbuf tmpfile = STRBUF_INIT; | |
957 | FILE *result; | |
958 | ||
959 | strbuf_addf(&tmpfile, "%s.temp", filename); | |
960 | result = fopen(tmpfile.buf, "a"); | |
961 | if (! result) { | |
962 | error("Unable to open local file %s", tmpfile.buf); | |
963 | ret = HTTP_ERROR; | |
964 | goto cleanup; | |
965 | } | |
966 | ||
4656bf47 | 967 | ret = http_request_reauth(url, NULL, result, HTTP_REQUEST_FILE, options); |
e929cd20 MH |
968 | fclose(result); |
969 | ||
970 | if ((ret == HTTP_OK) && move_temp_to_file(tmpfile.buf, filename)) | |
971 | ret = HTTP_ERROR; | |
972 | cleanup: | |
973 | strbuf_release(&tmpfile); | |
974 | return ret; | |
975 | } | |
976 | ||
c13b2633 | 977 | int http_fetch_ref(const char *base, struct ref *ref) |
d7e92806 MH |
978 | { |
979 | char *url; | |
980 | struct strbuf buffer = STRBUF_INIT; | |
0d5896e1 | 981 | int ret = -1; |
d7e92806 | 982 | |
c13b2633 | 983 | url = quote_ref_url(base, ref->name); |
4656bf47 | 984 | if (http_get_strbuf(url, NULL, &buffer, HTTP_NO_CACHE) == HTTP_OK) { |
0d5896e1 MH |
985 | strbuf_rtrim(&buffer); |
986 | if (buffer.len == 40) | |
987 | ret = get_sha1_hex(buffer.buf, ref->old_sha1); | |
988 | else if (!prefixcmp(buffer.buf, "ref: ")) { | |
989 | ref->symref = xstrdup(buffer.buf + 5); | |
990 | ret = 0; | |
d7e92806 | 991 | } |
d7e92806 MH |
992 | } |
993 | ||
994 | strbuf_release(&buffer); | |
995 | free(url); | |
996 | return ret; | |
997 | } | |
b8caac2b TRC |
998 | |
999 | /* Helpers for fetching packs */ | |
750ef425 | 1000 | static char *fetch_pack_index(unsigned char *sha1, const char *base_url) |
b8caac2b | 1001 | { |
750ef425 | 1002 | char *url, *tmp; |
b8caac2b | 1003 | struct strbuf buf = STRBUF_INIT; |
b8caac2b | 1004 | |
b8caac2b | 1005 | if (http_is_verbose) |
162eb5f8 | 1006 | fprintf(stderr, "Getting index for pack %s\n", sha1_to_hex(sha1)); |
b8caac2b TRC |
1007 | |
1008 | end_url_with_slash(&buf, base_url); | |
162eb5f8 | 1009 | strbuf_addf(&buf, "objects/pack/pack-%s.idx", sha1_to_hex(sha1)); |
b8caac2b TRC |
1010 | url = strbuf_detach(&buf, NULL); |
1011 | ||
750ef425 SP |
1012 | strbuf_addf(&buf, "%s.temp", sha1_pack_index_name(sha1)); |
1013 | tmp = strbuf_detach(&buf, NULL); | |
1014 | ||
1015 | if (http_get_file(url, tmp, 0) != HTTP_OK) { | |
82247e9b | 1016 | error("Unable to get pack index %s", url); |
750ef425 SP |
1017 | free(tmp); |
1018 | tmp = NULL; | |
1019 | } | |
b8caac2b | 1020 | |
b8caac2b | 1021 | free(url); |
750ef425 | 1022 | return tmp; |
b8caac2b TRC |
1023 | } |
1024 | ||
1025 | static int fetch_and_setup_pack_index(struct packed_git **packs_head, | |
1026 | unsigned char *sha1, const char *base_url) | |
1027 | { | |
1028 | struct packed_git *new_pack; | |
750ef425 SP |
1029 | char *tmp_idx = NULL; |
1030 | int ret; | |
b8caac2b | 1031 | |
750ef425 SP |
1032 | if (has_pack_index(sha1)) { |
1033 | new_pack = parse_pack_index(sha1, NULL); | |
1034 | if (!new_pack) | |
1035 | return -1; /* parse_pack_index() already issued error message */ | |
1036 | goto add_pack; | |
1037 | } | |
1038 | ||
1039 | tmp_idx = fetch_pack_index(sha1, base_url); | |
1040 | if (!tmp_idx) | |
b8caac2b TRC |
1041 | return -1; |
1042 | ||
750ef425 SP |
1043 | new_pack = parse_pack_index(sha1, tmp_idx); |
1044 | if (!new_pack) { | |
1045 | unlink(tmp_idx); | |
1046 | free(tmp_idx); | |
1047 | ||
b8caac2b | 1048 | return -1; /* parse_pack_index() already issued error message */ |
750ef425 SP |
1049 | } |
1050 | ||
1051 | ret = verify_pack_index(new_pack); | |
1052 | if (!ret) { | |
1053 | close_pack_index(new_pack); | |
1054 | ret = move_temp_to_file(tmp_idx, sha1_pack_index_name(sha1)); | |
1055 | } | |
1056 | free(tmp_idx); | |
1057 | if (ret) | |
1058 | return -1; | |
1059 | ||
1060 | add_pack: | |
b8caac2b TRC |
1061 | new_pack->next = *packs_head; |
1062 | *packs_head = new_pack; | |
1063 | return 0; | |
1064 | } | |
1065 | ||
1066 | int http_get_info_packs(const char *base_url, struct packed_git **packs_head) | |
1067 | { | |
1068 | int ret = 0, i = 0; | |
1069 | char *url, *data; | |
1070 | struct strbuf buf = STRBUF_INIT; | |
1071 | unsigned char sha1[20]; | |
1072 | ||
1073 | end_url_with_slash(&buf, base_url); | |
1074 | strbuf_addstr(&buf, "objects/info/packs"); | |
1075 | url = strbuf_detach(&buf, NULL); | |
1076 | ||
4656bf47 | 1077 | ret = http_get_strbuf(url, NULL, &buf, HTTP_NO_CACHE); |
b8caac2b TRC |
1078 | if (ret != HTTP_OK) |
1079 | goto cleanup; | |
1080 | ||
1081 | data = buf.buf; | |
1082 | while (i < buf.len) { | |
1083 | switch (data[i]) { | |
1084 | case 'P': | |
1085 | i++; | |
1086 | if (i + 52 <= buf.len && | |
1087 | !prefixcmp(data + i, " pack-") && | |
1088 | !prefixcmp(data + i + 46, ".pack\n")) { | |
1089 | get_sha1_hex(data + i + 6, sha1); | |
1090 | fetch_and_setup_pack_index(packs_head, sha1, | |
1091 | base_url); | |
1092 | i += 51; | |
1093 | break; | |
1094 | } | |
1095 | default: | |
1096 | while (i < buf.len && data[i] != '\n') | |
1097 | i++; | |
1098 | } | |
1099 | i++; | |
1100 | } | |
1101 | ||
1102 | cleanup: | |
1103 | free(url); | |
1104 | return ret; | |
1105 | } | |
2264dfa5 TRC |
1106 | |
1107 | void release_http_pack_request(struct http_pack_request *preq) | |
1108 | { | |
1109 | if (preq->packfile != NULL) { | |
1110 | fclose(preq->packfile); | |
1111 | preq->packfile = NULL; | |
2264dfa5 TRC |
1112 | } |
1113 | if (preq->range_header != NULL) { | |
1114 | curl_slist_free_all(preq->range_header); | |
1115 | preq->range_header = NULL; | |
1116 | } | |
1117 | preq->slot = NULL; | |
1118 | free(preq->url); | |
1119 | } | |
1120 | ||
1121 | int finish_http_pack_request(struct http_pack_request *preq) | |
1122 | { | |
2264dfa5 | 1123 | struct packed_git **lst; |
021ab6f0 | 1124 | struct packed_git *p = preq->target; |
fe72d420 SP |
1125 | char *tmp_idx; |
1126 | struct child_process ip; | |
1127 | const char *ip_argv[8]; | |
2264dfa5 | 1128 | |
fe72d420 | 1129 | close_pack_index(p); |
2264dfa5 | 1130 | |
3065274c SP |
1131 | fclose(preq->packfile); |
1132 | preq->packfile = NULL; | |
2264dfa5 TRC |
1133 | |
1134 | lst = preq->lst; | |
021ab6f0 | 1135 | while (*lst != p) |
2264dfa5 TRC |
1136 | lst = &((*lst)->next); |
1137 | *lst = (*lst)->next; | |
1138 | ||
fe72d420 SP |
1139 | tmp_idx = xstrdup(preq->tmpfile); |
1140 | strcpy(tmp_idx + strlen(tmp_idx) - strlen(".pack.temp"), | |
1141 | ".idx.temp"); | |
1142 | ||
1143 | ip_argv[0] = "index-pack"; | |
1144 | ip_argv[1] = "-o"; | |
1145 | ip_argv[2] = tmp_idx; | |
1146 | ip_argv[3] = preq->tmpfile; | |
1147 | ip_argv[4] = NULL; | |
1148 | ||
1149 | memset(&ip, 0, sizeof(ip)); | |
1150 | ip.argv = ip_argv; | |
1151 | ip.git_cmd = 1; | |
1152 | ip.no_stdin = 1; | |
1153 | ip.no_stdout = 1; | |
1154 | ||
1155 | if (run_command(&ip)) { | |
1156 | unlink(preq->tmpfile); | |
1157 | unlink(tmp_idx); | |
1158 | free(tmp_idx); | |
2264dfa5 | 1159 | return -1; |
fe72d420 SP |
1160 | } |
1161 | ||
1162 | unlink(sha1_pack_index_name(p->sha1)); | |
2264dfa5 | 1163 | |
fe72d420 SP |
1164 | if (move_temp_to_file(preq->tmpfile, sha1_pack_name(p->sha1)) |
1165 | || move_temp_to_file(tmp_idx, sha1_pack_index_name(p->sha1))) { | |
1166 | free(tmp_idx); | |
2264dfa5 | 1167 | return -1; |
fe72d420 | 1168 | } |
2264dfa5 | 1169 | |
fe72d420 SP |
1170 | install_packed_git(p); |
1171 | free(tmp_idx); | |
2264dfa5 TRC |
1172 | return 0; |
1173 | } | |
1174 | ||
1175 | struct http_pack_request *new_http_pack_request( | |
1176 | struct packed_git *target, const char *base_url) | |
1177 | { | |
2264dfa5 TRC |
1178 | long prev_posn = 0; |
1179 | char range[RANGE_HEADER_SIZE]; | |
1180 | struct strbuf buf = STRBUF_INIT; | |
1181 | struct http_pack_request *preq; | |
1182 | ||
ec99c9a8 | 1183 | preq = xcalloc(1, sizeof(*preq)); |
2264dfa5 | 1184 | preq->target = target; |
2264dfa5 TRC |
1185 | |
1186 | end_url_with_slash(&buf, base_url); | |
1187 | strbuf_addf(&buf, "objects/pack/pack-%s.pack", | |
1188 | sha1_to_hex(target->sha1)); | |
bb99190e | 1189 | preq->url = strbuf_detach(&buf, NULL); |
2264dfa5 | 1190 | |
90d05713 TRC |
1191 | snprintf(preq->tmpfile, sizeof(preq->tmpfile), "%s.temp", |
1192 | sha1_pack_name(target->sha1)); | |
2264dfa5 TRC |
1193 | preq->packfile = fopen(preq->tmpfile, "a"); |
1194 | if (!preq->packfile) { | |
1195 | error("Unable to open local file %s for pack", | |
1196 | preq->tmpfile); | |
1197 | goto abort; | |
1198 | } | |
1199 | ||
1200 | preq->slot = get_active_slot(); | |
2264dfa5 TRC |
1201 | curl_easy_setopt(preq->slot->curl, CURLOPT_FILE, preq->packfile); |
1202 | curl_easy_setopt(preq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite); | |
bb99190e | 1203 | curl_easy_setopt(preq->slot->curl, CURLOPT_URL, preq->url); |
2264dfa5 TRC |
1204 | curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER, |
1205 | no_pragma_header); | |
1206 | ||
1207 | /* | |
1208 | * If there is data present from a previous transfer attempt, | |
1209 | * resume where it left off | |
1210 | */ | |
1211 | prev_posn = ftell(preq->packfile); | |
1212 | if (prev_posn>0) { | |
1213 | if (http_is_verbose) | |
1214 | fprintf(stderr, | |
1215 | "Resuming fetch of pack %s at byte %ld\n", | |
1216 | sha1_to_hex(target->sha1), prev_posn); | |
1217 | sprintf(range, "Range: bytes=%ld-", prev_posn); | |
1218 | preq->range_header = curl_slist_append(NULL, range); | |
1219 | curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER, | |
1220 | preq->range_header); | |
1221 | } | |
1222 | ||
1223 | return preq; | |
1224 | ||
1225 | abort: | |
bb99190e | 1226 | free(preq->url); |
5ae9ebfd | 1227 | free(preq); |
2264dfa5 TRC |
1228 | return NULL; |
1229 | } | |
5424bc55 TRC |
1230 | |
1231 | /* Helpers for fetching objects (loose) */ | |
a04ff3ec | 1232 | static size_t fwrite_sha1_file(char *ptr, size_t eltsize, size_t nmemb, |
5424bc55 TRC |
1233 | void *data) |
1234 | { | |
1235 | unsigned char expn[4096]; | |
1236 | size_t size = eltsize * nmemb; | |
1237 | int posn = 0; | |
1238 | struct http_object_request *freq = | |
1239 | (struct http_object_request *)data; | |
1240 | do { | |
1241 | ssize_t retval = xwrite(freq->localfile, | |
1242 | (char *) ptr + posn, size - posn); | |
1243 | if (retval < 0) | |
1244 | return posn; | |
1245 | posn += retval; | |
1246 | } while (posn < size); | |
1247 | ||
1248 | freq->stream.avail_in = size; | |
a04ff3ec | 1249 | freq->stream.next_in = (void *)ptr; |
5424bc55 TRC |
1250 | do { |
1251 | freq->stream.next_out = expn; | |
1252 | freq->stream.avail_out = sizeof(expn); | |
1253 | freq->zret = git_inflate(&freq->stream, Z_SYNC_FLUSH); | |
1254 | git_SHA1_Update(&freq->c, expn, | |
1255 | sizeof(expn) - freq->stream.avail_out); | |
1256 | } while (freq->stream.avail_in && freq->zret == Z_OK); | |
5424bc55 TRC |
1257 | return size; |
1258 | } | |
1259 | ||
1260 | struct http_object_request *new_http_object_request(const char *base_url, | |
1261 | unsigned char *sha1) | |
1262 | { | |
1263 | char *hex = sha1_to_hex(sha1); | |
1264 | char *filename; | |
1265 | char prevfile[PATH_MAX]; | |
5424bc55 | 1266 | int prevlocal; |
a04ff3ec | 1267 | char prev_buf[PREV_BUF_SIZE]; |
5424bc55 TRC |
1268 | ssize_t prev_read = 0; |
1269 | long prev_posn = 0; | |
1270 | char range[RANGE_HEADER_SIZE]; | |
1271 | struct curl_slist *range_header = NULL; | |
1272 | struct http_object_request *freq; | |
1273 | ||
ec99c9a8 | 1274 | freq = xcalloc(1, sizeof(*freq)); |
5424bc55 TRC |
1275 | hashcpy(freq->sha1, sha1); |
1276 | freq->localfile = -1; | |
1277 | ||
1278 | filename = sha1_file_name(sha1); | |
5424bc55 TRC |
1279 | snprintf(freq->tmpfile, sizeof(freq->tmpfile), |
1280 | "%s.temp", filename); | |
1281 | ||
1282 | snprintf(prevfile, sizeof(prevfile), "%s.prev", filename); | |
1283 | unlink_or_warn(prevfile); | |
1284 | rename(freq->tmpfile, prevfile); | |
1285 | unlink_or_warn(freq->tmpfile); | |
1286 | ||
1287 | if (freq->localfile != -1) | |
1288 | error("fd leakage in start: %d", freq->localfile); | |
1289 | freq->localfile = open(freq->tmpfile, | |
1290 | O_WRONLY | O_CREAT | O_EXCL, 0666); | |
1291 | /* | |
1292 | * This could have failed due to the "lazy directory creation"; | |
1293 | * try to mkdir the last path component. | |
1294 | */ | |
1295 | if (freq->localfile < 0 && errno == ENOENT) { | |
1296 | char *dir = strrchr(freq->tmpfile, '/'); | |
1297 | if (dir) { | |
1298 | *dir = 0; | |
1299 | mkdir(freq->tmpfile, 0777); | |
1300 | *dir = '/'; | |
1301 | } | |
1302 | freq->localfile = open(freq->tmpfile, | |
1303 | O_WRONLY | O_CREAT | O_EXCL, 0666); | |
1304 | } | |
1305 | ||
1306 | if (freq->localfile < 0) { | |
0da8b2e7 SP |
1307 | error("Couldn't create temporary file %s: %s", |
1308 | freq->tmpfile, strerror(errno)); | |
5424bc55 TRC |
1309 | goto abort; |
1310 | } | |
1311 | ||
5424bc55 TRC |
1312 | git_inflate_init(&freq->stream); |
1313 | ||
1314 | git_SHA1_Init(&freq->c); | |
1315 | ||
bb99190e | 1316 | freq->url = get_remote_object_url(base_url, hex, 0); |
5424bc55 TRC |
1317 | |
1318 | /* | |
1319 | * If a previous temp file is present, process what was already | |
1320 | * fetched. | |
1321 | */ | |
1322 | prevlocal = open(prevfile, O_RDONLY); | |
1323 | if (prevlocal != -1) { | |
1324 | do { | |
1325 | prev_read = xread(prevlocal, prev_buf, PREV_BUF_SIZE); | |
1326 | if (prev_read>0) { | |
1327 | if (fwrite_sha1_file(prev_buf, | |
1328 | 1, | |
1329 | prev_read, | |
1330 | freq) == prev_read) { | |
1331 | prev_posn += prev_read; | |
1332 | } else { | |
1333 | prev_read = -1; | |
1334 | } | |
1335 | } | |
1336 | } while (prev_read > 0); | |
1337 | close(prevlocal); | |
1338 | } | |
1339 | unlink_or_warn(prevfile); | |
1340 | ||
1341 | /* | |
1342 | * Reset inflate/SHA1 if there was an error reading the previous temp | |
1343 | * file; also rewind to the beginning of the local file. | |
1344 | */ | |
1345 | if (prev_read == -1) { | |
1346 | memset(&freq->stream, 0, sizeof(freq->stream)); | |
1347 | git_inflate_init(&freq->stream); | |
1348 | git_SHA1_Init(&freq->c); | |
1349 | if (prev_posn>0) { | |
1350 | prev_posn = 0; | |
1351 | lseek(freq->localfile, 0, SEEK_SET); | |
0c4f21e4 | 1352 | if (ftruncate(freq->localfile, 0) < 0) { |
0da8b2e7 SP |
1353 | error("Couldn't truncate temporary file %s: %s", |
1354 | freq->tmpfile, strerror(errno)); | |
0c4f21e4 JL |
1355 | goto abort; |
1356 | } | |
5424bc55 TRC |
1357 | } |
1358 | } | |
1359 | ||
1360 | freq->slot = get_active_slot(); | |
1361 | ||
1362 | curl_easy_setopt(freq->slot->curl, CURLOPT_FILE, freq); | |
1363 | curl_easy_setopt(freq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file); | |
1364 | curl_easy_setopt(freq->slot->curl, CURLOPT_ERRORBUFFER, freq->errorstr); | |
bb99190e | 1365 | curl_easy_setopt(freq->slot->curl, CURLOPT_URL, freq->url); |
5424bc55 TRC |
1366 | curl_easy_setopt(freq->slot->curl, CURLOPT_HTTPHEADER, no_pragma_header); |
1367 | ||
1368 | /* | |
1369 | * If we have successfully processed data from a previous fetch | |
1370 | * attempt, only fetch the data we don't already have. | |
1371 | */ | |
1372 | if (prev_posn>0) { | |
1373 | if (http_is_verbose) | |
1374 | fprintf(stderr, | |
1375 | "Resuming fetch of object %s at byte %ld\n", | |
1376 | hex, prev_posn); | |
1377 | sprintf(range, "Range: bytes=%ld-", prev_posn); | |
1378 | range_header = curl_slist_append(range_header, range); | |
1379 | curl_easy_setopt(freq->slot->curl, | |
1380 | CURLOPT_HTTPHEADER, range_header); | |
1381 | } | |
1382 | ||
1383 | return freq; | |
1384 | ||
5424bc55 | 1385 | abort: |
bb99190e | 1386 | free(freq->url); |
5424bc55 TRC |
1387 | free(freq); |
1388 | return NULL; | |
1389 | } | |
1390 | ||
1391 | void process_http_object_request(struct http_object_request *freq) | |
1392 | { | |
1393 | if (freq->slot == NULL) | |
1394 | return; | |
1395 | freq->curl_result = freq->slot->curl_result; | |
1396 | freq->http_code = freq->slot->http_code; | |
1397 | freq->slot = NULL; | |
1398 | } | |
1399 | ||
1400 | int finish_http_object_request(struct http_object_request *freq) | |
1401 | { | |
1402 | struct stat st; | |
1403 | ||
1404 | close(freq->localfile); | |
1405 | freq->localfile = -1; | |
1406 | ||
1407 | process_http_object_request(freq); | |
1408 | ||
1409 | if (freq->http_code == 416) { | |
bd757c18 | 1410 | warning("requested range invalid; we may already have all the data."); |
5424bc55 TRC |
1411 | } else if (freq->curl_result != CURLE_OK) { |
1412 | if (stat(freq->tmpfile, &st) == 0) | |
1413 | if (st.st_size == 0) | |
1414 | unlink_or_warn(freq->tmpfile); | |
1415 | return -1; | |
1416 | } | |
1417 | ||
1418 | git_inflate_end(&freq->stream); | |
1419 | git_SHA1_Final(freq->real_sha1, &freq->c); | |
1420 | if (freq->zret != Z_STREAM_END) { | |
1421 | unlink_or_warn(freq->tmpfile); | |
1422 | return -1; | |
1423 | } | |
1424 | if (hashcmp(freq->sha1, freq->real_sha1)) { | |
1425 | unlink_or_warn(freq->tmpfile); | |
1426 | return -1; | |
1427 | } | |
1428 | freq->rename = | |
0da8b2e7 | 1429 | move_temp_to_file(freq->tmpfile, sha1_file_name(freq->sha1)); |
5424bc55 TRC |
1430 | |
1431 | return freq->rename; | |
1432 | } | |
1433 | ||
1434 | void abort_http_object_request(struct http_object_request *freq) | |
1435 | { | |
1436 | unlink_or_warn(freq->tmpfile); | |
1437 | ||
1438 | release_http_object_request(freq); | |
1439 | } | |
1440 | ||
1441 | void release_http_object_request(struct http_object_request *freq) | |
1442 | { | |
1443 | if (freq->localfile != -1) { | |
1444 | close(freq->localfile); | |
1445 | freq->localfile = -1; | |
1446 | } | |
1447 | if (freq->url != NULL) { | |
1448 | free(freq->url); | |
1449 | freq->url = NULL; | |
1450 | } | |
4b9fa0e3 TRC |
1451 | if (freq->slot != NULL) { |
1452 | freq->slot->callback_func = NULL; | |
1453 | freq->slot->callback_data = NULL; | |
1454 | release_active_slot(freq->slot); | |
1455 | freq->slot = NULL; | |
1456 | } | |
5424bc55 | 1457 | } |