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Nick Hengeveld29508e12005-11-18 19:02:581#include "http.h"
Tay Ray Chuan2264dfa2009-06-06 08:44:012#include "pack.h"
Shawn O. Pearcede1a2fd2009-10-31 00:47:413#include "sideband.h"
Shawn O. Pearcefe72d422010-04-19 14:23:094#include "run-command.h"
Gabriel Coronaf39f72d2010-11-14 01:51:155#include "url.h"
Nick Hengeveld29508e12005-11-18 19:02:586
7int data_received;
Junio C Hamano4251ccb2009-03-10 01:47:298int active_requests;
Tay Ray Chuane9176742009-06-06 08:43:419int http_is_verbose;
Shawn O. Pearcede1a2fd2009-10-31 00:47:4110size_t http_post_buffer = 16 * LARGE_PACKET_MAX;
Nick Hengeveld29508e12005-11-18 19:02:5811
Martin Storsjöb8ac9232009-11-27 15:43:0812#if LIBCURL_VERSION_NUM >= 0x070a06
13#define LIBCURL_CAN_HANDLE_AUTH_ANY
14#endif
15
Tay Ray Chuanad75ebe2009-11-27 15:42:2616static int min_curl_sessions = 1;
17static int curl_session_count;
Nick Hengeveld29508e12005-11-18 19:02:5818#ifdef USE_CURL_MULTI
Mike Hommeycc3530e2007-12-09 17:04:5719static int max_requests = -1;
20static CURLM *curlm;
Nick Hengeveld29508e12005-11-18 19:02:5821#endif
22#ifndef NO_CURL_EASY_DUPHANDLE
Mike Hommeycc3530e2007-12-09 17:04:5723static CURL *curl_default;
Nick Hengeveld29508e12005-11-18 19:02:5824#endif
Tay Ray Chuan5424bc52009-06-06 08:44:0225
26#define PREV_BUF_SIZE 4096
27#define RANGE_HEADER_SIZE 30
28
Nick Hengeveld29508e12005-11-18 19:02:5829char curl_errorstr[CURL_ERROR_SIZE];
30
Mike Hommeycc3530e2007-12-09 17:04:5731static int curl_ssl_verify = -1;
Junio C Hamano4251ccb2009-03-10 01:47:2932static const char *ssl_cert;
Mark Lodatoef52aaf2009-06-15 02:39:0033#if LIBCURL_VERSION_NUM >= 0x070903
Junio C Hamano4251ccb2009-03-10 01:47:2934static const char *ssl_key;
Nick Hengeveld29508e12005-11-18 19:02:5835#endif
36#if LIBCURL_VERSION_NUM >= 0x070908
Junio C Hamano4251ccb2009-03-10 01:47:2937static const char *ssl_capath;
Nick Hengeveld29508e12005-11-18 19:02:5838#endif
Junio C Hamano4251ccb2009-03-10 01:47:2939static const char *ssl_cainfo;
Mike Hommeycc3530e2007-12-09 17:04:5740static long curl_low_speed_limit = -1;
41static long curl_low_speed_time = -1;
Junio C Hamano4251ccb2009-03-10 01:47:2942static int curl_ftp_no_epsv;
43static const char *curl_http_proxy;
Junio C Hamanoc33976c2009-03-10 06:34:2544static char *user_name, *user_pass;
Spencer E. Olsonb1d10582010-08-11 20:40:3845static const char *user_agent;
Nick Hengeveld29508e12005-11-18 19:02:5846
Mark Lodato30dd9162009-05-28 03:16:0247#if LIBCURL_VERSION_NUM >= 0x071700
48/* Use CURLOPT_KEYPASSWD as is */
49#elif LIBCURL_VERSION_NUM >= 0x070903
50#define CURLOPT_KEYPASSWD CURLOPT_SSLKEYPASSWD
51#else
52#define CURLOPT_KEYPASSWD CURLOPT_SSLCERTPASSWD
53#endif
54
55static char *ssl_cert_password;
56static int ssl_cert_password_required;
57
Mike Hommeycc3530e2007-12-09 17:04:5758static struct curl_slist *pragma_header;
Tay Ray Chuan5424bc52009-06-06 08:44:0259static struct curl_slist *no_pragma_header;
Tay Ray Chuane9176742009-06-06 08:43:4160
Junio C Hamano4251ccb2009-03-10 01:47:2961static struct active_request_slot *active_queue_head;
Nick Hengeveld29508e12005-11-18 19:02:5862
Junio C Hamanof444e522008-07-04 07:37:4063size_t fread_buffer(void *ptr, size_t eltsize, size_t nmemb, void *buffer_)
Nick Hengeveld29508e12005-11-18 19:02:5864{
65 size_t size = eltsize * nmemb;
Junio C Hamanof444e522008-07-04 07:37:4066 struct buffer *buffer = buffer_;
67
Mike Hommey028c2972007-12-09 19:30:5968 if (size > buffer->buf.len - buffer->posn)
69 size = buffer->buf.len - buffer->posn;
70 memcpy(ptr, buffer->buf.buf + buffer->posn, size);
Nick Hengeveld29508e12005-11-18 19:02:5871 buffer->posn += size;
Mike Hommey028c2972007-12-09 19:30:5972
Nick Hengeveld29508e12005-11-18 19:02:5873 return size;
74}
75
Martin Storsjö3944ba02009-04-01 16:48:2476#ifndef NO_CURL_IOCTL
77curlioerr ioctl_buffer(CURL *handle, int cmd, void *clientp)
78{
79 struct buffer *buffer = clientp;
80
81 switch (cmd) {
82 case CURLIOCMD_NOP:
83 return CURLIOE_OK;
84
85 case CURLIOCMD_RESTARTREAD:
86 buffer->posn = 0;
87 return CURLIOE_OK;
88
89 default:
90 return CURLIOE_UNKNOWNCMD;
91 }
92}
93#endif
94
Junio C Hamanof444e522008-07-04 07:37:4095size_t fwrite_buffer(const void *ptr, size_t eltsize, size_t nmemb, void *buffer_)
Nick Hengeveld29508e12005-11-18 19:02:5896{
97 size_t size = eltsize * nmemb;
Junio C Hamanof444e522008-07-04 07:37:4098 struct strbuf *buffer = buffer_;
99
Mike Hommey028c2972007-12-09 19:30:59100 strbuf_add(buffer, ptr, size);
Nick Hengeveld29508e12005-11-18 19:02:58101 data_received++;
102 return size;
103}
104
Junio C Hamanof444e522008-07-04 07:37:40105size_t fwrite_null(const void *ptr, size_t eltsize, size_t nmemb, void *strbuf)
Nick Hengeveld29508e12005-11-18 19:02:58106{
107 data_received++;
108 return eltsize * nmemb;
109}
110
Nick Hengeveld29508e12005-11-18 19:02:58111#ifdef USE_CURL_MULTI
112static void process_curl_messages(void)
113{
114 int num_messages;
115 struct active_request_slot *slot;
116 CURLMsg *curl_message = curl_multi_info_read(curlm, &num_messages);
117
118 while (curl_message != NULL) {
119 if (curl_message->msg == CURLMSG_DONE) {
120 int curl_result = curl_message->data.result;
121 slot = active_queue_head;
122 while (slot != NULL &&
123 slot->curl != curl_message->easy_handle)
124 slot = slot->next;
125 if (slot != NULL) {
126 curl_multi_remove_handle(curlm, slot->curl);
127 slot->curl_result = curl_result;
128 finish_active_slot(slot);
129 } else {
130 fprintf(stderr, "Received DONE message for unknown request!\n");
131 }
132 } else {
133 fprintf(stderr, "Unknown CURL message received: %d\n",
134 (int)curl_message->msg);
135 }
136 curl_message = curl_multi_info_read(curlm, &num_messages);
137 }
138}
139#endif
140
Johannes Schindelinef90d6d2008-05-14 17:46:53141static int http_options(const char *var, const char *value, void *cb)
Nick Hengeveld29508e12005-11-18 19:02:58142{
143 if (!strcmp("http.sslverify", var)) {
Junio C Hamano7059cd92009-03-10 02:00:30144 curl_ssl_verify = git_config_bool(var, value);
Nick Hengeveld29508e12005-11-18 19:02:58145 return 0;
146 }
Junio C Hamano7059cd92009-03-10 02:00:30147 if (!strcmp("http.sslcert", var))
148 return git_config_string(&ssl_cert, var, value);
Mark Lodatoef52aaf2009-06-15 02:39:00149#if LIBCURL_VERSION_NUM >= 0x070903
Junio C Hamano7059cd92009-03-10 02:00:30150 if (!strcmp("http.sslkey", var))
151 return git_config_string(&ssl_key, var, value);
Nick Hengeveld29508e12005-11-18 19:02:58152#endif
153#if LIBCURL_VERSION_NUM >= 0x070908
Junio C Hamano7059cd92009-03-10 02:00:30154 if (!strcmp("http.sslcapath", var))
155 return git_config_string(&ssl_capath, var, value);
Nick Hengeveld29508e12005-11-18 19:02:58156#endif
Junio C Hamano7059cd92009-03-10 02:00:30157 if (!strcmp("http.sslcainfo", var))
158 return git_config_string(&ssl_cainfo, var, value);
Mark Lodato754ae192009-05-28 03:16:03159 if (!strcmp("http.sslcertpasswordprotected", var)) {
160 if (git_config_bool(var, value))
161 ssl_cert_password_required = 1;
162 return 0;
163 }
Tay Ray Chuanad75ebe2009-11-27 15:42:26164 if (!strcmp("http.minsessions", var)) {
165 min_curl_sessions = git_config_int(var, value);
166#ifndef USE_CURL_MULTI
167 if (min_curl_sessions > 1)
168 min_curl_sessions = 1;
169#endif
170 return 0;
171 }
Junio C Hamanoa6080a02007-06-07 07:04:01172#ifdef USE_CURL_MULTI
Nick Hengeveld29508e12005-11-18 19:02:58173 if (!strcmp("http.maxrequests", var)) {
Junio C Hamano7059cd92009-03-10 02:00:30174 max_requests = git_config_int(var, value);
Nick Hengeveld29508e12005-11-18 19:02:58175 return 0;
176 }
177#endif
Nick Hengeveld29508e12005-11-18 19:02:58178 if (!strcmp("http.lowspeedlimit", var)) {
Junio C Hamano7059cd92009-03-10 02:00:30179 curl_low_speed_limit = (long)git_config_int(var, value);
Nick Hengeveld29508e12005-11-18 19:02:58180 return 0;
181 }
182 if (!strcmp("http.lowspeedtime", var)) {
Junio C Hamano7059cd92009-03-10 02:00:30183 curl_low_speed_time = (long)git_config_int(var, value);
Nick Hengeveld29508e12005-11-18 19:02:58184 return 0;
185 }
186
Sasha Khapyorsky3ea099d2006-09-29 00:10:44187 if (!strcmp("http.noepsv", var)) {
188 curl_ftp_no_epsv = git_config_bool(var, value);
189 return 0;
190 }
Junio C Hamano7059cd92009-03-10 02:00:30191 if (!strcmp("http.proxy", var))
192 return git_config_string(&curl_http_proxy, var, value);
Sasha Khapyorsky3ea099d2006-09-29 00:10:44193
Shawn O. Pearcede1a2fd2009-10-31 00:47:41194 if (!strcmp("http.postbuffer", var)) {
195 http_post_buffer = git_config_int(var, value);
196 if (http_post_buffer < LARGE_PACKET_MAX)
197 http_post_buffer = LARGE_PACKET_MAX;
198 return 0;
199 }
200
Spencer E. Olsonb1d10582010-08-11 20:40:38201 if (!strcmp("http.useragent", var))
202 return git_config_string(&user_agent, var, value);
203
Nick Hengeveld29508e12005-11-18 19:02:58204 /* Fall back on the default ones */
Johannes Schindelinef90d6d2008-05-14 17:46:53205 return git_default_config(var, value, cb);
Nick Hengeveld29508e12005-11-18 19:02:58206}
207
Junio C Hamanoc33976c2009-03-10 06:34:25208static void init_curl_http_auth(CURL *result)
209{
Junio C Hamano750d9302009-03-13 05:34:43210 if (user_name) {
Junio C Hamanoc33976c2009-03-10 06:34:25211 struct strbuf up = STRBUF_INIT;
212 if (!user_pass)
Frank Lif2060632010-03-04 19:59:50213 user_pass = xstrdup(git_getpass("Password: "));
Junio C Hamanoc33976c2009-03-10 06:34:25214 strbuf_addf(&up, "%s:%s", user_name, user_pass);
215 curl_easy_setopt(result, CURLOPT_USERPWD,
216 strbuf_detach(&up, NULL));
217 }
218}
219
Mark Lodato30dd9162009-05-28 03:16:02220static int has_cert_password(void)
221{
222 if (ssl_cert_password != NULL)
223 return 1;
224 if (ssl_cert == NULL || ssl_cert_password_required != 1)
225 return 0;
226 /* Only prompt the user once. */
227 ssl_cert_password_required = -1;
Frank Lif2060632010-03-04 19:59:50228 ssl_cert_password = git_getpass("Certificate Password: ");
Mark Lodato30dd9162009-05-28 03:16:02229 if (ssl_cert_password != NULL) {
230 ssl_cert_password = xstrdup(ssl_cert_password);
231 return 1;
232 } else
233 return 0;
234}
235
Junio C Hamano4251ccb2009-03-10 01:47:29236static CURL *get_curl_handle(void)
Junio C Hamano11979b92005-11-19 01:06:46237{
Junio C Hamano4251ccb2009-03-10 01:47:29238 CURL *result = curl_easy_init();
Junio C Hamano11979b92005-11-19 01:06:46239
Junio C Hamanoa5ccc592008-02-21 23:10:37240 if (!curl_ssl_verify) {
241 curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 0);
242 curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 0);
243 } else {
244 /* Verify authenticity of the peer's certificate */
245 curl_easy_setopt(result, CURLOPT_SSL_VERIFYPEER, 1);
246 /* The name in the cert must match whom we tried to connect */
247 curl_easy_setopt(result, CURLOPT_SSL_VERIFYHOST, 2);
248 }
249
Junio C Hamano11979b92005-11-19 01:06:46250#if LIBCURL_VERSION_NUM >= 0x070907
251 curl_easy_setopt(result, CURLOPT_NETRC, CURL_NETRC_OPTIONAL);
252#endif
Martin Storsjöb8ac9232009-11-27 15:43:08253#ifdef LIBCURL_CAN_HANDLE_AUTH_ANY
Junio C Hamano525ecd22009-12-28 18:04:24254 curl_easy_setopt(result, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
Martin Storsjöb8ac9232009-11-27 15:43:08255#endif
Junio C Hamano11979b92005-11-19 01:06:46256
Junio C Hamanoc33976c2009-03-10 06:34:25257 init_curl_http_auth(result);
258
Junio C Hamano11979b92005-11-19 01:06:46259 if (ssl_cert != NULL)
260 curl_easy_setopt(result, CURLOPT_SSLCERT, ssl_cert);
Mark Lodato30dd9162009-05-28 03:16:02261 if (has_cert_password())
262 curl_easy_setopt(result, CURLOPT_KEYPASSWD, ssl_cert_password);
Mark Lodatoef52aaf2009-06-15 02:39:00263#if LIBCURL_VERSION_NUM >= 0x070903
Junio C Hamano11979b92005-11-19 01:06:46264 if (ssl_key != NULL)
265 curl_easy_setopt(result, CURLOPT_SSLKEY, ssl_key);
266#endif
267#if LIBCURL_VERSION_NUM >= 0x070908
268 if (ssl_capath != NULL)
269 curl_easy_setopt(result, CURLOPT_CAPATH, ssl_capath);
270#endif
271 if (ssl_cainfo != NULL)
272 curl_easy_setopt(result, CURLOPT_CAINFO, ssl_cainfo);
273 curl_easy_setopt(result, CURLOPT_FAILONERROR, 1);
274
275 if (curl_low_speed_limit > 0 && curl_low_speed_time > 0) {
276 curl_easy_setopt(result, CURLOPT_LOW_SPEED_LIMIT,
277 curl_low_speed_limit);
278 curl_easy_setopt(result, CURLOPT_LOW_SPEED_TIME,
279 curl_low_speed_time);
280 }
281
282 curl_easy_setopt(result, CURLOPT_FOLLOWLOCATION, 1);
Tay Ray Chuan311e2ea2010-09-25 04:20:35283#if LIBCURL_VERSION_NUM >= 0x071301
284 curl_easy_setopt(result, CURLOPT_POSTREDIR, CURL_REDIR_POST_ALL);
285#elif LIBCURL_VERSION_NUM >= 0x071101
286 curl_easy_setopt(result, CURLOPT_POST301, 1);
287#endif
Junio C Hamano11979b92005-11-19 01:06:46288
Mark Wooding7982d742006-02-01 11:44:37289 if (getenv("GIT_CURL_VERBOSE"))
290 curl_easy_setopt(result, CURLOPT_VERBOSE, 1);
291
Spencer E. Olsonb1d10582010-08-11 20:40:38292 curl_easy_setopt(result, CURLOPT_USERAGENT,
293 user_agent ? user_agent : GIT_HTTP_USER_AGENT);
Nick Hengeveld20fc9bc2006-04-04 17:11:29294
Sasha Khapyorsky3ea099d2006-09-29 00:10:44295 if (curl_ftp_no_epsv)
296 curl_easy_setopt(result, CURLOPT_FTP_USE_EPSV, 0);
297
Sam Vilain9c5665a2007-11-23 00:07:00298 if (curl_http_proxy)
299 curl_easy_setopt(result, CURLOPT_PROXY, curl_http_proxy);
300
Junio C Hamano11979b92005-11-19 01:06:46301 return result;
302}
303
Junio C Hamanoc33976c2009-03-10 06:34:25304static void http_auth_init(const char *url)
305{
Gabriel Coronaf39f72d2010-11-14 01:51:15306 char *at, *colon, *cp, *slash, *decoded;
Junio C Hamanoc33976c2009-03-10 06:34:25307 int len;
308
309 cp = strstr(url, "://");
310 if (!cp)
311 return;
312
313 /*
314 * Ok, the URL looks like "proto://something". Which one?
315 * "proto://<user>:<pass>@<host>/...",
316 * "proto://<user>@<host>/...", or just
317 * "proto://<host>/..."?
318 */
319 cp += 3;
320 at = strchr(cp, '@');
321 colon = strchr(cp, ':');
322 slash = strchrnul(cp, '/');
323 if (!at || slash <= at)
324 return; /* No credentials */
325 if (!colon || at <= colon) {
326 /* Only username */
327 len = at - cp;
328 user_name = xmalloc(len + 1);
329 memcpy(user_name, cp, len);
330 user_name[len] = '\0';
Gabriel Coronaf39f72d2010-11-14 01:51:15331 decoded = url_decode(user_name);
332 free(user_name);
333 user_name = decoded;
Junio C Hamanoc33976c2009-03-10 06:34:25334 user_pass = NULL;
335 } else {
336 len = colon - cp;
337 user_name = xmalloc(len + 1);
338 memcpy(user_name, cp, len);
339 user_name[len] = '\0';
Gabriel Coronaf39f72d2010-11-14 01:51:15340 decoded = url_decode(user_name);
341 free(user_name);
342 user_name = decoded;
Junio C Hamanoc33976c2009-03-10 06:34:25343 len = at - (colon + 1);
344 user_pass = xmalloc(len + 1);
345 memcpy(user_pass, colon + 1, len);
346 user_pass[len] = '\0';
Gabriel Coronaf39f72d2010-11-14 01:51:15347 decoded = url_decode(user_pass);
348 free(user_pass);
349 user_pass = decoded;
Junio C Hamanoc33976c2009-03-10 06:34:25350 }
351}
352
Junio C Hamano7059cd92009-03-10 02:00:30353static void set_from_env(const char **var, const char *envname)
354{
355 const char *val = getenv(envname);
356 if (val)
357 *var = val;
358}
359
Mike Hommey9fc64402008-02-27 20:35:50360void http_init(struct remote *remote)
Nick Hengeveld29508e12005-11-18 19:02:58361{
362 char *low_speed_limit;
363 char *low_speed_time;
364
Tay Ray Chuane9176742009-06-06 08:43:41365 http_is_verbose = 0;
366
Junio C Hamano7059cd92009-03-10 02:00:30367 git_config(http_options, NULL);
368
Nick Hengeveld29508e12005-11-18 19:02:58369 curl_global_init(CURL_GLOBAL_ALL);
370
Mike Hommey9fc64402008-02-27 20:35:50371 if (remote && remote->http_proxy)
372 curl_http_proxy = xstrdup(remote->http_proxy);
373
Nick Hengeveld29508e12005-11-18 19:02:58374 pragma_header = curl_slist_append(pragma_header, "Pragma: no-cache");
Tay Ray Chuane9176742009-06-06 08:43:41375 no_pragma_header = curl_slist_append(no_pragma_header, "Pragma:");
Nick Hengeveld29508e12005-11-18 19:02:58376
377#ifdef USE_CURL_MULTI
378 {
379 char *http_max_requests = getenv("GIT_HTTP_MAX_REQUESTS");
380 if (http_max_requests != NULL)
381 max_requests = atoi(http_max_requests);
382 }
383
384 curlm = curl_multi_init();
385 if (curlm == NULL) {
386 fprintf(stderr, "Error creating curl multi handle.\n");
387 exit(1);
388 }
389#endif
390
391 if (getenv("GIT_SSL_NO_VERIFY"))
392 curl_ssl_verify = 0;
393
Junio C Hamano7059cd92009-03-10 02:00:30394 set_from_env(&ssl_cert, "GIT_SSL_CERT");
Mark Lodatoef52aaf2009-06-15 02:39:00395#if LIBCURL_VERSION_NUM >= 0x070903
Junio C Hamano7059cd92009-03-10 02:00:30396 set_from_env(&ssl_key, "GIT_SSL_KEY");
Nick Hengeveld29508e12005-11-18 19:02:58397#endif
398#if LIBCURL_VERSION_NUM >= 0x070908
Junio C Hamano7059cd92009-03-10 02:00:30399 set_from_env(&ssl_capath, "GIT_SSL_CAPATH");
Nick Hengeveld29508e12005-11-18 19:02:58400#endif
Junio C Hamano7059cd92009-03-10 02:00:30401 set_from_env(&ssl_cainfo, "GIT_SSL_CAINFO");
Nick Hengeveld29508e12005-11-18 19:02:58402
Spencer E. Olsonb1d10582010-08-11 20:40:38403 set_from_env(&user_agent, "GIT_HTTP_USER_AGENT");
404
Nick Hengeveld29508e12005-11-18 19:02:58405 low_speed_limit = getenv("GIT_HTTP_LOW_SPEED_LIMIT");
406 if (low_speed_limit != NULL)
407 curl_low_speed_limit = strtol(low_speed_limit, NULL, 10);
408 low_speed_time = getenv("GIT_HTTP_LOW_SPEED_TIME");
409 if (low_speed_time != NULL)
410 curl_low_speed_time = strtol(low_speed_time, NULL, 10);
411
Nick Hengeveld29508e12005-11-18 19:02:58412 if (curl_ssl_verify == -1)
413 curl_ssl_verify = 1;
414
Tay Ray Chuanad75ebe2009-11-27 15:42:26415 curl_session_count = 0;
Nick Hengeveld29508e12005-11-18 19:02:58416#ifdef USE_CURL_MULTI
417 if (max_requests < 1)
418 max_requests = DEFAULT_MAX_REQUESTS;
419#endif
420
Sasha Khapyorsky3ea099d2006-09-29 00:10:44421 if (getenv("GIT_CURL_FTP_NO_EPSV"))
422 curl_ftp_no_epsv = 1;
423
Mark Lodato30dd9162009-05-28 03:16:02424 if (remote && remote->url && remote->url[0]) {
Junio C Hamanoc33976c2009-03-10 06:34:25425 http_auth_init(remote->url[0]);
Mark Lodato754ae192009-05-28 03:16:03426 if (!ssl_cert_password_required &&
427 getenv("GIT_SSL_CERT_PASSWORD_PROTECTED") &&
428 !prefixcmp(remote->url[0], "https://"))
Mark Lodato30dd9162009-05-28 03:16:02429 ssl_cert_password_required = 1;
430 }
Junio C Hamanoc33976c2009-03-10 06:34:25431
Nick Hengeveld29508e12005-11-18 19:02:58432#ifndef NO_CURL_EASY_DUPHANDLE
433 curl_default = get_curl_handle();
434#endif
435}
436
437void http_cleanup(void)
438{
439 struct active_request_slot *slot = active_queue_head;
Nick Hengeveld29508e12005-11-18 19:02:58440
441 while (slot != NULL) {
Shawn O. Pearce3278cd02007-09-15 07:23:00442 struct active_request_slot *next = slot->next;
Mike Hommeyf23d1f72008-03-03 19:30:16443 if (slot->curl != NULL) {
Nick Hengeveld29508e12005-11-18 19:02:58444#ifdef USE_CURL_MULTI
Mike Hommeyf23d1f72008-03-03 19:30:16445 curl_multi_remove_handle(curlm, slot->curl);
Nick Hengeveld29508e12005-11-18 19:02:58446#endif
Nick Hengeveld29508e12005-11-18 19:02:58447 curl_easy_cleanup(slot->curl);
Mike Hommeyf23d1f72008-03-03 19:30:16448 }
Shawn O. Pearce3278cd02007-09-15 07:23:00449 free(slot);
450 slot = next;
Nick Hengeveld29508e12005-11-18 19:02:58451 }
Shawn O. Pearce3278cd02007-09-15 07:23:00452 active_queue_head = NULL;
Nick Hengeveld29508e12005-11-18 19:02:58453
454#ifndef NO_CURL_EASY_DUPHANDLE
455 curl_easy_cleanup(curl_default);
456#endif
457
458#ifdef USE_CURL_MULTI
459 curl_multi_cleanup(curlm);
460#endif
461 curl_global_cleanup();
Nick Hengeveldb3ca4e4e2006-06-06 16:41:32462
463 curl_slist_free_all(pragma_header);
Shawn O. Pearce3278cd02007-09-15 07:23:00464 pragma_header = NULL;
Mike Hommey9fc64402008-02-27 20:35:50465
Tay Ray Chuane9176742009-06-06 08:43:41466 curl_slist_free_all(no_pragma_header);
467 no_pragma_header = NULL;
468
Mike Hommey9fc64402008-02-27 20:35:50469 if (curl_http_proxy) {
Miklos Vajnae4a80ec2008-12-07 00:45:37470 free((void *)curl_http_proxy);
Mike Hommey9fc64402008-02-27 20:35:50471 curl_http_proxy = NULL;
472 }
Mark Lodato30dd9162009-05-28 03:16:02473
474 if (ssl_cert_password != NULL) {
475 memset(ssl_cert_password, 0, strlen(ssl_cert_password));
476 free(ssl_cert_password);
477 ssl_cert_password = NULL;
478 }
479 ssl_cert_password_required = 0;
Nick Hengeveld29508e12005-11-18 19:02:58480}
481
Nick Hengeveld29508e12005-11-18 19:02:58482struct active_request_slot *get_active_slot(void)
483{
484 struct active_request_slot *slot = active_queue_head;
485 struct active_request_slot *newslot;
486
487#ifdef USE_CURL_MULTI
488 int num_transfers;
489
490 /* Wait for a slot to open up if the queue is full */
491 while (active_requests >= max_requests) {
492 curl_multi_perform(curlm, &num_transfers);
Junio C Hamano4251ccb2009-03-10 01:47:29493 if (num_transfers < active_requests)
Nick Hengeveld29508e12005-11-18 19:02:58494 process_curl_messages();
Nick Hengeveld29508e12005-11-18 19:02:58495 }
496#endif
497
Junio C Hamano4251ccb2009-03-10 01:47:29498 while (slot != NULL && slot->in_use)
Nick Hengeveld29508e12005-11-18 19:02:58499 slot = slot->next;
Junio C Hamano4251ccb2009-03-10 01:47:29500
Nick Hengeveld29508e12005-11-18 19:02:58501 if (slot == NULL) {
502 newslot = xmalloc(sizeof(*newslot));
503 newslot->curl = NULL;
504 newslot->in_use = 0;
505 newslot->next = NULL;
506
507 slot = active_queue_head;
508 if (slot == NULL) {
509 active_queue_head = newslot;
510 } else {
Junio C Hamano4251ccb2009-03-10 01:47:29511 while (slot->next != NULL)
Nick Hengeveld29508e12005-11-18 19:02:58512 slot = slot->next;
Nick Hengeveld29508e12005-11-18 19:02:58513 slot->next = newslot;
514 }
515 slot = newslot;
516 }
517
518 if (slot->curl == NULL) {
519#ifdef NO_CURL_EASY_DUPHANDLE
520 slot->curl = get_curl_handle();
521#else
522 slot->curl = curl_easy_duphandle(curl_default);
523#endif
Tay Ray Chuanad75ebe2009-11-27 15:42:26524 curl_session_count++;
Nick Hengeveld29508e12005-11-18 19:02:58525 }
526
527 active_requests++;
528 slot->in_use = 1;
529 slot->local = NULL;
Nick Hengeveldc8568e12006-01-31 19:06:55530 slot->results = NULL;
Nick Hengeveldbaa7b672006-03-11 04:18:01531 slot->finished = NULL;
Nick Hengeveld29508e12005-11-18 19:02:58532 slot->callback_data = NULL;
533 slot->callback_func = NULL;
Nick Hengeveld29508e12005-11-18 19:02:58534 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, pragma_header);
Nick Hengeveld29508e12005-11-18 19:02:58535 curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, curl_errorstr);
Nick Hengeveld90949502006-05-31 23:25:03536 curl_easy_setopt(slot->curl, CURLOPT_CUSTOMREQUEST, NULL);
537 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, NULL);
538 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, NULL);
539 curl_easy_setopt(slot->curl, CURLOPT_UPLOAD, 0);
540 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
Nick Hengeveld29508e12005-11-18 19:02:58541
542 return slot;
543}
544
545int start_active_slot(struct active_request_slot *slot)
546{
547#ifdef USE_CURL_MULTI
548 CURLMcode curlm_result = curl_multi_add_handle(curlm, slot->curl);
Daniel Barkalow45c17412007-09-11 03:02:28549 int num_transfers;
Nick Hengeveld29508e12005-11-18 19:02:58550
551 if (curlm_result != CURLM_OK &&
552 curlm_result != CURLM_CALL_MULTI_PERFORM) {
553 active_requests--;
554 slot->in_use = 0;
555 return 0;
556 }
Daniel Barkalow45c17412007-09-11 03:02:28557
558 /*
559 * We know there must be something to do, since we just added
560 * something.
561 */
562 curl_multi_perform(curlm, &num_transfers);
Nick Hengeveld29508e12005-11-18 19:02:58563#endif
564 return 1;
565}
566
567#ifdef USE_CURL_MULTI
Daniel Barkalowfc57b6a2007-09-11 03:02:34568struct fill_chain {
569 void *data;
570 int (*fill)(void *);
571 struct fill_chain *next;
572};
573
Junio C Hamano4251ccb2009-03-10 01:47:29574static struct fill_chain *fill_cfg;
Daniel Barkalowfc57b6a2007-09-11 03:02:34575
576void add_fill_function(void *data, int (*fill)(void *))
577{
Dotan Barake8eec712008-09-09 18:57:10578 struct fill_chain *new = xmalloc(sizeof(*new));
Daniel Barkalowfc57b6a2007-09-11 03:02:34579 struct fill_chain **linkp = &fill_cfg;
580 new->data = data;
581 new->fill = fill;
582 new->next = NULL;
583 while (*linkp)
584 linkp = &(*linkp)->next;
585 *linkp = new;
586}
587
Daniel Barkalow45c17412007-09-11 03:02:28588void fill_active_slots(void)
589{
590 struct active_request_slot *slot = active_queue_head;
591
Daniel Barkalowfc57b6a2007-09-11 03:02:34592 while (active_requests < max_requests) {
593 struct fill_chain *fill;
594 for (fill = fill_cfg; fill; fill = fill->next)
595 if (fill->fill(fill->data))
596 break;
597
598 if (!fill)
Daniel Barkalow45c17412007-09-11 03:02:28599 break;
Daniel Barkalowfc57b6a2007-09-11 03:02:34600 }
Daniel Barkalow45c17412007-09-11 03:02:28601
602 while (slot != NULL) {
Tay Ray Chuanad75ebe2009-11-27 15:42:26603 if (!slot->in_use && slot->curl != NULL
604 && curl_session_count > min_curl_sessions) {
Daniel Barkalow45c17412007-09-11 03:02:28605 curl_easy_cleanup(slot->curl);
606 slot->curl = NULL;
Tay Ray Chuanad75ebe2009-11-27 15:42:26607 curl_session_count--;
Daniel Barkalow45c17412007-09-11 03:02:28608 }
609 slot = slot->next;
610 }
611}
612
Nick Hengeveld29508e12005-11-18 19:02:58613void step_active_slots(void)
614{
615 int num_transfers;
616 CURLMcode curlm_result;
617
618 do {
619 curlm_result = curl_multi_perform(curlm, &num_transfers);
620 } while (curlm_result == CURLM_CALL_MULTI_PERFORM);
621 if (num_transfers < active_requests) {
622 process_curl_messages();
623 fill_active_slots();
624 }
625}
626#endif
627
628void run_active_slot(struct active_request_slot *slot)
629{
630#ifdef USE_CURL_MULTI
631 long last_pos = 0;
632 long current_pos;
633 fd_set readfds;
634 fd_set writefds;
635 fd_set excfds;
636 int max_fd;
637 struct timeval select_timeout;
Nick Hengeveldbaa7b672006-03-11 04:18:01638 int finished = 0;
Nick Hengeveld29508e12005-11-18 19:02:58639
Nick Hengeveldbaa7b672006-03-11 04:18:01640 slot->finished = &finished;
641 while (!finished) {
Nick Hengeveld29508e12005-11-18 19:02:58642 data_received = 0;
643 step_active_slots();
644
645 if (!data_received && slot->local != NULL) {
646 current_pos = ftell(slot->local);
647 if (current_pos > last_pos)
648 data_received++;
649 last_pos = current_pos;
650 }
651
652 if (slot->in_use && !data_received) {
653 max_fd = 0;
654 FD_ZERO(&readfds);
655 FD_ZERO(&writefds);
656 FD_ZERO(&excfds);
657 select_timeout.tv_sec = 0;
658 select_timeout.tv_usec = 50000;
659 select(max_fd, &readfds, &writefds,
660 &excfds, &select_timeout);
661 }
662 }
663#else
664 while (slot->in_use) {
665 slot->curl_result = curl_easy_perform(slot->curl);
666 finish_active_slot(slot);
667 }
668#endif
669}
670
Mark Wooding53f31382006-02-07 10:07:39671static void closedown_active_slot(struct active_request_slot *slot)
Nick Hengeveld29508e12005-11-18 19:02:58672{
Mike Hommey028c2972007-12-09 19:30:59673 active_requests--;
674 slot->in_use = 0;
Mark Wooding53f31382006-02-07 10:07:39675}
676
Junio C Hamano83e41e22010-01-12 06:26:08677static void release_active_slot(struct active_request_slot *slot)
Mark Wooding53f31382006-02-07 10:07:39678{
679 closedown_active_slot(slot);
Tay Ray Chuanad75ebe2009-11-27 15:42:26680 if (slot->curl && curl_session_count > min_curl_sessions) {
Nick Hengeveldb3ca4e4e2006-06-06 16:41:32681#ifdef USE_CURL_MULTI
Mark Wooding53f31382006-02-07 10:07:39682 curl_multi_remove_handle(curlm, slot->curl);
Nick Hengeveldb3ca4e4e2006-06-06 16:41:32683#endif
Mark Wooding53f31382006-02-07 10:07:39684 curl_easy_cleanup(slot->curl);
685 slot->curl = NULL;
Tay Ray Chuanad75ebe2009-11-27 15:42:26686 curl_session_count--;
Mark Wooding53f31382006-02-07 10:07:39687 }
Nick Hengeveldb3ca4e4e2006-06-06 16:41:32688#ifdef USE_CURL_MULTI
Mark Wooding53f31382006-02-07 10:07:39689 fill_active_slots();
Nick Hengeveldb3ca4e4e2006-06-06 16:41:32690#endif
Mark Wooding53f31382006-02-07 10:07:39691}
692
Shawn O. Pearcede1a2fd2009-10-31 00:47:41693void finish_active_slot(struct active_request_slot *slot)
Mark Wooding53f31382006-02-07 10:07:39694{
695 closedown_active_slot(slot);
Mike Hommey028c2972007-12-09 19:30:59696 curl_easy_getinfo(slot->curl, CURLINFO_HTTP_CODE, &slot->http_code);
Nick Hengeveldc8568e12006-01-31 19:06:55697
Nick Hengeveldbaa7b672006-03-11 04:18:01698 if (slot->finished != NULL)
699 (*slot->finished) = 1;
700
Nick Hengeveldc8568e12006-01-31 19:06:55701 /* Store slot results so they can be read after the slot is reused */
702 if (slot->results != NULL) {
703 slot->results->curl_result = slot->curl_result;
704 slot->results->http_code = slot->http_code;
705 }
706
Mike Hommey028c2972007-12-09 19:30:59707 /* Run callback if appropriate */
Junio C Hamano4251ccb2009-03-10 01:47:29708 if (slot->callback_func != NULL)
Mike Hommey028c2972007-12-09 19:30:59709 slot->callback_func(slot->callback_data);
Nick Hengeveld29508e12005-11-18 19:02:58710}
711
712void finish_all_active_slots(void)
713{
714 struct active_request_slot *slot = active_queue_head;
715
716 while (slot != NULL)
717 if (slot->in_use) {
718 run_active_slot(slot);
719 slot = active_queue_head;
720 } else {
721 slot = slot->next;
722 }
723}
Mike Hommeyd7e92802007-12-10 23:08:25724
Tay Ray Chuan5ace9942009-06-06 08:43:43725/* Helpers for modifying and creating URLs */
Mike Hommeyd7e92802007-12-10 23:08:25726static inline int needs_quote(int ch)
727{
728 if (((ch >= 'A') && (ch <= 'Z'))
729 || ((ch >= 'a') && (ch <= 'z'))
730 || ((ch >= '0') && (ch <= '9'))
731 || (ch == '/')
732 || (ch == '-')
733 || (ch == '.'))
734 return 0;
735 return 1;
736}
737
738static inline int hex(int v)
739{
Junio C Hamano4251ccb2009-03-10 01:47:29740 if (v < 10)
741 return '0' + v;
742 else
743 return 'A' + v - 10;
Mike Hommeyd7e92802007-12-10 23:08:25744}
745
Mike Hommeyd7e92802007-12-10 23:08:25746static char *quote_ref_url(const char *base, const char *ref)
747{
Tay Ray Chuan113106e2009-03-07 16:47:21748 struct strbuf buf = STRBUF_INIT;
Mike Hommeyd7e92802007-12-10 23:08:25749 const char *cp;
Tay Ray Chuan113106e2009-03-07 16:47:21750 int ch;
Mike Hommeyd7e92802007-12-10 23:08:25751
Tay Ray Chuan5ace9942009-06-06 08:43:43752 end_url_with_slash(&buf, base);
Tay Ray Chuan113106e2009-03-07 16:47:21753
754 for (cp = ref; (ch = *cp) != 0; cp++)
Mike Hommeyd7e92802007-12-10 23:08:25755 if (needs_quote(ch))
Tay Ray Chuan113106e2009-03-07 16:47:21756 strbuf_addf(&buf, "%%%02x", ch);
Mike Hommeyd7e92802007-12-10 23:08:25757 else
Tay Ray Chuan113106e2009-03-07 16:47:21758 strbuf_addch(&buf, *cp);
Mike Hommeyd7e92802007-12-10 23:08:25759
Tay Ray Chuan113106e2009-03-07 16:47:21760 return strbuf_detach(&buf, NULL);
Mike Hommeyd7e92802007-12-10 23:08:25761}
762
Tay Ray Chuan5424bc52009-06-06 08:44:02763void append_remote_object_url(struct strbuf *buf, const char *url,
764 const char *hex,
765 int only_two_digit_prefix)
766{
Tay Ray Chuan800324c2009-08-17 09:09:43767 end_url_with_slash(buf, url);
768
769 strbuf_addf(buf, "objects/%.*s/", 2, hex);
Tay Ray Chuan5424bc52009-06-06 08:44:02770 if (!only_two_digit_prefix)
771 strbuf_addf(buf, "%s", hex+2);
772}
773
774char *get_remote_object_url(const char *url, const char *hex,
775 int only_two_digit_prefix)
776{
777 struct strbuf buf = STRBUF_INIT;
778 append_remote_object_url(&buf, url, hex, only_two_digit_prefix);
779 return strbuf_detach(&buf, NULL);
780}
781
Mike Hommeye929cd22009-06-06 08:43:53782/* http_request() targets */
783#define HTTP_REQUEST_STRBUF 0
784#define HTTP_REQUEST_FILE 1
785
786static int http_request(const char *url, void *result, int target, int options)
787{
788 struct active_request_slot *slot;
789 struct slot_results results;
790 struct curl_slist *headers = NULL;
791 struct strbuf buf = STRBUF_INIT;
792 int ret;
793
794 slot = get_active_slot();
795 slot->results = &results;
796 curl_easy_setopt(slot->curl, CURLOPT_HTTPGET, 1);
797
798 if (result == NULL) {
799 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 1);
800 } else {
801 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
802 curl_easy_setopt(slot->curl, CURLOPT_FILE, result);
803
804 if (target == HTTP_REQUEST_FILE) {
805 long posn = ftell(result);
806 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION,
807 fwrite);
808 if (posn > 0) {
809 strbuf_addf(&buf, "Range: bytes=%ld-", posn);
810 headers = curl_slist_append(headers, buf.buf);
811 strbuf_reset(&buf);
812 }
813 slot->local = result;
814 } else
815 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION,
816 fwrite_buffer);
817 }
818
819 strbuf_addstr(&buf, "Pragma:");
820 if (options & HTTP_NO_CACHE)
821 strbuf_addstr(&buf, " no-cache");
822
823 headers = curl_slist_append(headers, buf.buf);
824
825 curl_easy_setopt(slot->curl, CURLOPT_URL, url);
826 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
827
828 if (start_active_slot(slot)) {
829 run_active_slot(slot);
830 if (results.curl_result == CURLE_OK)
831 ret = HTTP_OK;
832 else if (missing_target(&results))
833 ret = HTTP_MISSING_TARGET;
Scott Chacon42653c02010-04-01 22:14:35834 else if (results.http_code == 401) {
835 if (user_name) {
836 ret = HTTP_NOAUTH;
837 } else {
838 /*
839 * git_getpass is needed here because its very likely stdin/stdout are
840 * pipes to our parent process. So we instead need to use /dev/tty,
841 * but that is non-portable. Using git_getpass() can at least be stubbed
842 * on other platforms with a different implementation if/when necessary.
843 */
844 user_name = xstrdup(git_getpass("Username: "));
845 init_curl_http_auth(slot->curl);
846 ret = HTTP_REAUTH;
847 }
848 } else
Mike Hommeye929cd22009-06-06 08:43:53849 ret = HTTP_ERROR;
850 } else {
851 error("Unable to start HTTP request for %s", url);
852 ret = HTTP_START_FAILED;
853 }
854
855 slot->local = NULL;
856 curl_slist_free_all(headers);
857 strbuf_release(&buf);
858
859 return ret;
860}
861
862int http_get_strbuf(const char *url, struct strbuf *result, int options)
863{
Scott Chacon42653c02010-04-01 22:14:35864 int http_ret = http_request(url, result, HTTP_REQUEST_STRBUF, options);
865 if (http_ret == HTTP_REAUTH) {
866 http_ret = http_request(url, result, HTTP_REQUEST_STRBUF, options);
867 }
868 return http_ret;
Mike Hommeye929cd22009-06-06 08:43:53869}
870
Junio C Hamano83e41e22010-01-12 06:26:08871/*
872 * Downloads an url and stores the result in the given file.
873 *
874 * If a previous interrupted download is detected (i.e. a previous temporary
875 * file is still around) the download is resumed.
876 */
877static int http_get_file(const char *url, const char *filename, int options)
Mike Hommeye929cd22009-06-06 08:43:53878{
879 int ret;
880 struct strbuf tmpfile = STRBUF_INIT;
881 FILE *result;
882
883 strbuf_addf(&tmpfile, "%s.temp", filename);
884 result = fopen(tmpfile.buf, "a");
885 if (! result) {
886 error("Unable to open local file %s", tmpfile.buf);
887 ret = HTTP_ERROR;
888 goto cleanup;
889 }
890
891 ret = http_request(url, result, HTTP_REQUEST_FILE, options);
892 fclose(result);
893
894 if ((ret == HTTP_OK) && move_temp_to_file(tmpfile.buf, filename))
895 ret = HTTP_ERROR;
896cleanup:
897 strbuf_release(&tmpfile);
898 return ret;
899}
900
901int http_error(const char *url, int ret)
902{
903 /* http_request has already handled HTTP_START_FAILED. */
904 if (ret != HTTP_START_FAILED)
905 error("%s while accessing %s\n", curl_errorstr, url);
906
907 return ret;
908}
909
Daniel Barkalowc13b2632008-04-26 19:53:09910int http_fetch_ref(const char *base, struct ref *ref)
Mike Hommeyd7e92802007-12-10 23:08:25911{
912 char *url;
913 struct strbuf buffer = STRBUF_INIT;
Mike Hommey0d5896e2009-06-06 08:43:55914 int ret = -1;
Mike Hommeyd7e92802007-12-10 23:08:25915
Daniel Barkalowc13b2632008-04-26 19:53:09916 url = quote_ref_url(base, ref->name);
Mike Hommey0d5896e2009-06-06 08:43:55917 if (http_get_strbuf(url, &buffer, HTTP_NO_CACHE) == HTTP_OK) {
918 strbuf_rtrim(&buffer);
919 if (buffer.len == 40)
920 ret = get_sha1_hex(buffer.buf, ref->old_sha1);
921 else if (!prefixcmp(buffer.buf, "ref: ")) {
922 ref->symref = xstrdup(buffer.buf + 5);
923 ret = 0;
Mike Hommeyd7e92802007-12-10 23:08:25924 }
Mike Hommeyd7e92802007-12-10 23:08:25925 }
926
927 strbuf_release(&buffer);
928 free(url);
929 return ret;
930}
Tay Ray Chuanb8caac22009-06-06 08:43:59931
932/* Helpers for fetching packs */
Shawn O. Pearce750ef422010-04-19 14:23:10933static char *fetch_pack_index(unsigned char *sha1, const char *base_url)
Tay Ray Chuanb8caac22009-06-06 08:43:59934{
Shawn O. Pearce750ef422010-04-19 14:23:10935 char *url, *tmp;
Tay Ray Chuanb8caac22009-06-06 08:43:59936 struct strbuf buf = STRBUF_INIT;
Tay Ray Chuanb8caac22009-06-06 08:43:59937
Tay Ray Chuanb8caac22009-06-06 08:43:59938 if (http_is_verbose)
Shawn O. Pearce162eb5f2010-04-19 14:23:05939 fprintf(stderr, "Getting index for pack %s\n", sha1_to_hex(sha1));
Tay Ray Chuanb8caac22009-06-06 08:43:59940
941 end_url_with_slash(&buf, base_url);
Shawn O. Pearce162eb5f2010-04-19 14:23:05942 strbuf_addf(&buf, "objects/pack/pack-%s.idx", sha1_to_hex(sha1));
Tay Ray Chuanb8caac22009-06-06 08:43:59943 url = strbuf_detach(&buf, NULL);
944
Shawn O. Pearce750ef422010-04-19 14:23:10945 strbuf_addf(&buf, "%s.temp", sha1_pack_index_name(sha1));
946 tmp = strbuf_detach(&buf, NULL);
Tay Ray Chuanb8caac22009-06-06 08:43:59947
Shawn O. Pearce750ef422010-04-19 14:23:10948 if (http_get_file(url, tmp, 0) != HTTP_OK) {
949 error("Unable to get pack index %s\n", url);
950 free(tmp);
951 tmp = NULL;
952 }
953
Tay Ray Chuanb8caac22009-06-06 08:43:59954 free(url);
Shawn O. Pearce750ef422010-04-19 14:23:10955 return tmp;
Tay Ray Chuanb8caac22009-06-06 08:43:59956}
957
958static int fetch_and_setup_pack_index(struct packed_git **packs_head,
959 unsigned char *sha1, const char *base_url)
960{
961 struct packed_git *new_pack;
Shawn O. Pearce750ef422010-04-19 14:23:10962 char *tmp_idx = NULL;
963 int ret;
Tay Ray Chuanb8caac22009-06-06 08:43:59964
Shawn O. Pearce750ef422010-04-19 14:23:10965 if (has_pack_index(sha1)) {
966 new_pack = parse_pack_index(sha1, NULL);
967 if (!new_pack)
968 return -1; /* parse_pack_index() already issued error message */
969 goto add_pack;
970 }
971
972 tmp_idx = fetch_pack_index(sha1, base_url);
973 if (!tmp_idx)
Tay Ray Chuanb8caac22009-06-06 08:43:59974 return -1;
975
Shawn O. Pearce750ef422010-04-19 14:23:10976 new_pack = parse_pack_index(sha1, tmp_idx);
977 if (!new_pack) {
978 unlink(tmp_idx);
979 free(tmp_idx);
980
Tay Ray Chuanb8caac22009-06-06 08:43:59981 return -1; /* parse_pack_index() already issued error message */
Shawn O. Pearce750ef422010-04-19 14:23:10982 }
983
984 ret = verify_pack_index(new_pack);
985 if (!ret) {
986 close_pack_index(new_pack);
987 ret = move_temp_to_file(tmp_idx, sha1_pack_index_name(sha1));
988 }
989 free(tmp_idx);
990 if (ret)
991 return -1;
992
993add_pack:
Tay Ray Chuanb8caac22009-06-06 08:43:59994 new_pack->next = *packs_head;
995 *packs_head = new_pack;
996 return 0;
997}
998
999int http_get_info_packs(const char *base_url, struct packed_git **packs_head)
1000{
1001 int ret = 0, i = 0;
1002 char *url, *data;
1003 struct strbuf buf = STRBUF_INIT;
1004 unsigned char sha1[20];
1005
1006 end_url_with_slash(&buf, base_url);
1007 strbuf_addstr(&buf, "objects/info/packs");
1008 url = strbuf_detach(&buf, NULL);
1009
1010 ret = http_get_strbuf(url, &buf, HTTP_NO_CACHE);
1011 if (ret != HTTP_OK)
1012 goto cleanup;
1013
1014 data = buf.buf;
1015 while (i < buf.len) {
1016 switch (data[i]) {
1017 case 'P':
1018 i++;
1019 if (i + 52 <= buf.len &&
1020 !prefixcmp(data + i, " pack-") &&
1021 !prefixcmp(data + i + 46, ".pack\n")) {
1022 get_sha1_hex(data + i + 6, sha1);
1023 fetch_and_setup_pack_index(packs_head, sha1,
1024 base_url);
1025 i += 51;
1026 break;
1027 }
1028 default:
1029 while (i < buf.len && data[i] != '\n')
1030 i++;
1031 }
1032 i++;
1033 }
1034
1035cleanup:
1036 free(url);
1037 return ret;
1038}
Tay Ray Chuan2264dfa2009-06-06 08:44:011039
1040void release_http_pack_request(struct http_pack_request *preq)
1041{
1042 if (preq->packfile != NULL) {
1043 fclose(preq->packfile);
1044 preq->packfile = NULL;
1045 preq->slot->local = NULL;
1046 }
1047 if (preq->range_header != NULL) {
1048 curl_slist_free_all(preq->range_header);
1049 preq->range_header = NULL;
1050 }
1051 preq->slot = NULL;
1052 free(preq->url);
1053}
1054
1055int finish_http_pack_request(struct http_pack_request *preq)
1056{
Tay Ray Chuan2264dfa2009-06-06 08:44:011057 struct packed_git **lst;
Shawn O. Pearce021ab6f2010-04-17 20:07:361058 struct packed_git *p = preq->target;
Shawn O. Pearcefe72d422010-04-19 14:23:091059 char *tmp_idx;
1060 struct child_process ip;
1061 const char *ip_argv[8];
Tay Ray Chuan2264dfa2009-06-06 08:44:011062
Shawn O. Pearcefe72d422010-04-19 14:23:091063 close_pack_index(p);
Tay Ray Chuan2264dfa2009-06-06 08:44:011064
Shawn O. Pearce30652742010-04-17 20:07:371065 fclose(preq->packfile);
1066 preq->packfile = NULL;
1067 preq->slot->local = NULL;
Tay Ray Chuan2264dfa2009-06-06 08:44:011068
1069 lst = preq->lst;
Shawn O. Pearce021ab6f2010-04-17 20:07:361070 while (*lst != p)
Tay Ray Chuan2264dfa2009-06-06 08:44:011071 lst = &((*lst)->next);
1072 *lst = (*lst)->next;
1073
Shawn O. Pearcefe72d422010-04-19 14:23:091074 tmp_idx = xstrdup(preq->tmpfile);
1075 strcpy(tmp_idx + strlen(tmp_idx) - strlen(".pack.temp"),
1076 ".idx.temp");
Tay Ray Chuan2264dfa2009-06-06 08:44:011077
Shawn O. Pearcefe72d422010-04-19 14:23:091078 ip_argv[0] = "index-pack";
1079 ip_argv[1] = "-o";
1080 ip_argv[2] = tmp_idx;
1081 ip_argv[3] = preq->tmpfile;
1082 ip_argv[4] = NULL;
1083
1084 memset(&ip, 0, sizeof(ip));
1085 ip.argv = ip_argv;
1086 ip.git_cmd = 1;
1087 ip.no_stdin = 1;
1088 ip.no_stdout = 1;
1089
1090 if (run_command(&ip)) {
1091 unlink(preq->tmpfile);
1092 unlink(tmp_idx);
1093 free(tmp_idx);
1094 return -1;
1095 }
1096
1097 unlink(sha1_pack_index_name(p->sha1));
1098
1099 if (move_temp_to_file(preq->tmpfile, sha1_pack_name(p->sha1))
1100 || move_temp_to_file(tmp_idx, sha1_pack_index_name(p->sha1))) {
1101 free(tmp_idx);
1102 return -1;
1103 }
1104
1105 install_packed_git(p);
1106 free(tmp_idx);
Tay Ray Chuan2264dfa2009-06-06 08:44:011107 return 0;
1108}
1109
1110struct http_pack_request *new_http_pack_request(
1111 struct packed_git *target, const char *base_url)
1112{
Tay Ray Chuan2264dfa2009-06-06 08:44:011113 long prev_posn = 0;
1114 char range[RANGE_HEADER_SIZE];
1115 struct strbuf buf = STRBUF_INIT;
1116 struct http_pack_request *preq;
1117
1118 preq = xmalloc(sizeof(*preq));
1119 preq->target = target;
1120 preq->range_header = NULL;
1121
1122 end_url_with_slash(&buf, base_url);
1123 strbuf_addf(&buf, "objects/pack/pack-%s.pack",
1124 sha1_to_hex(target->sha1));
Tay Ray Chuanbb991902009-08-10 15:59:551125 preq->url = strbuf_detach(&buf, NULL);
Tay Ray Chuan2264dfa2009-06-06 08:44:011126
Tay Ray Chuan90d05712010-04-19 14:46:431127 snprintf(preq->tmpfile, sizeof(preq->tmpfile), "%s.temp",
1128 sha1_pack_name(target->sha1));
Tay Ray Chuan2264dfa2009-06-06 08:44:011129 preq->packfile = fopen(preq->tmpfile, "a");
1130 if (!preq->packfile) {
1131 error("Unable to open local file %s for pack",
1132 preq->tmpfile);
1133 goto abort;
1134 }
1135
1136 preq->slot = get_active_slot();
1137 preq->slot->local = preq->packfile;
1138 curl_easy_setopt(preq->slot->curl, CURLOPT_FILE, preq->packfile);
1139 curl_easy_setopt(preq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
Tay Ray Chuanbb991902009-08-10 15:59:551140 curl_easy_setopt(preq->slot->curl, CURLOPT_URL, preq->url);
Tay Ray Chuan2264dfa2009-06-06 08:44:011141 curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER,
1142 no_pragma_header);
1143
1144 /*
1145 * If there is data present from a previous transfer attempt,
1146 * resume where it left off
1147 */
1148 prev_posn = ftell(preq->packfile);
1149 if (prev_posn>0) {
1150 if (http_is_verbose)
1151 fprintf(stderr,
1152 "Resuming fetch of pack %s at byte %ld\n",
1153 sha1_to_hex(target->sha1), prev_posn);
1154 sprintf(range, "Range: bytes=%ld-", prev_posn);
1155 preq->range_header = curl_slist_append(NULL, range);
1156 curl_easy_setopt(preq->slot->curl, CURLOPT_HTTPHEADER,
1157 preq->range_header);
1158 }
1159
1160 return preq;
1161
1162abort:
Tay Ray Chuanbb991902009-08-10 15:59:551163 free(preq->url);
Tay Ray Chuan5ae9ebf2009-08-10 15:55:481164 free(preq);
Tay Ray Chuan2264dfa2009-06-06 08:44:011165 return NULL;
1166}
Tay Ray Chuan5424bc52009-06-06 08:44:021167
1168/* Helpers for fetching objects (loose) */
1169static size_t fwrite_sha1_file(void *ptr, size_t eltsize, size_t nmemb,
1170 void *data)
1171{
1172 unsigned char expn[4096];
1173 size_t size = eltsize * nmemb;
1174 int posn = 0;
1175 struct http_object_request *freq =
1176 (struct http_object_request *)data;
1177 do {
1178 ssize_t retval = xwrite(freq->localfile,
1179 (char *) ptr + posn, size - posn);
1180 if (retval < 0)
1181 return posn;
1182 posn += retval;
1183 } while (posn < size);
1184
1185 freq->stream.avail_in = size;
1186 freq->stream.next_in = ptr;
1187 do {
1188 freq->stream.next_out = expn;
1189 freq->stream.avail_out = sizeof(expn);
1190 freq->zret = git_inflate(&freq->stream, Z_SYNC_FLUSH);
1191 git_SHA1_Update(&freq->c, expn,
1192 sizeof(expn) - freq->stream.avail_out);
1193 } while (freq->stream.avail_in && freq->zret == Z_OK);
1194 data_received++;
1195 return size;
1196}
1197
1198struct http_object_request *new_http_object_request(const char *base_url,
1199 unsigned char *sha1)
1200{
1201 char *hex = sha1_to_hex(sha1);
1202 char *filename;
1203 char prevfile[PATH_MAX];
Tay Ray Chuan5424bc52009-06-06 08:44:021204 int prevlocal;
1205 unsigned char prev_buf[PREV_BUF_SIZE];
1206 ssize_t prev_read = 0;
1207 long prev_posn = 0;
1208 char range[RANGE_HEADER_SIZE];
1209 struct curl_slist *range_header = NULL;
1210 struct http_object_request *freq;
1211
1212 freq = xmalloc(sizeof(*freq));
1213 hashcpy(freq->sha1, sha1);
1214 freq->localfile = -1;
1215
1216 filename = sha1_file_name(sha1);
Tay Ray Chuan5424bc52009-06-06 08:44:021217 snprintf(freq->tmpfile, sizeof(freq->tmpfile),
1218 "%s.temp", filename);
1219
1220 snprintf(prevfile, sizeof(prevfile), "%s.prev", filename);
1221 unlink_or_warn(prevfile);
1222 rename(freq->tmpfile, prevfile);
1223 unlink_or_warn(freq->tmpfile);
1224
1225 if (freq->localfile != -1)
1226 error("fd leakage in start: %d", freq->localfile);
1227 freq->localfile = open(freq->tmpfile,
1228 O_WRONLY | O_CREAT | O_EXCL, 0666);
1229 /*
1230 * This could have failed due to the "lazy directory creation";
1231 * try to mkdir the last path component.
1232 */
1233 if (freq->localfile < 0 && errno == ENOENT) {
1234 char *dir = strrchr(freq->tmpfile, '/');
1235 if (dir) {
1236 *dir = 0;
1237 mkdir(freq->tmpfile, 0777);
1238 *dir = '/';
1239 }
1240 freq->localfile = open(freq->tmpfile,
1241 O_WRONLY | O_CREAT | O_EXCL, 0666);
1242 }
1243
1244 if (freq->localfile < 0) {
Shawn O. Pearce0da8b2e2010-04-17 20:07:381245 error("Couldn't create temporary file %s: %s",
1246 freq->tmpfile, strerror(errno));
Tay Ray Chuan5424bc52009-06-06 08:44:021247 goto abort;
1248 }
1249
1250 memset(&freq->stream, 0, sizeof(freq->stream));
1251
1252 git_inflate_init(&freq->stream);
1253
1254 git_SHA1_Init(&freq->c);
1255
Tay Ray Chuanbb991902009-08-10 15:59:551256 freq->url = get_remote_object_url(base_url, hex, 0);
Tay Ray Chuan5424bc52009-06-06 08:44:021257
1258 /*
1259 * If a previous temp file is present, process what was already
1260 * fetched.
1261 */
1262 prevlocal = open(prevfile, O_RDONLY);
1263 if (prevlocal != -1) {
1264 do {
1265 prev_read = xread(prevlocal, prev_buf, PREV_BUF_SIZE);
1266 if (prev_read>0) {
1267 if (fwrite_sha1_file(prev_buf,
1268 1,
1269 prev_read,
1270 freq) == prev_read) {
1271 prev_posn += prev_read;
1272 } else {
1273 prev_read = -1;
1274 }
1275 }
1276 } while (prev_read > 0);
1277 close(prevlocal);
1278 }
1279 unlink_or_warn(prevfile);
1280
1281 /*
1282 * Reset inflate/SHA1 if there was an error reading the previous temp
1283 * file; also rewind to the beginning of the local file.
1284 */
1285 if (prev_read == -1) {
1286 memset(&freq->stream, 0, sizeof(freq->stream));
1287 git_inflate_init(&freq->stream);
1288 git_SHA1_Init(&freq->c);
1289 if (prev_posn>0) {
1290 prev_posn = 0;
1291 lseek(freq->localfile, 0, SEEK_SET);
Jeff Lasslett0c4f21e2009-08-10 16:05:061292 if (ftruncate(freq->localfile, 0) < 0) {
Shawn O. Pearce0da8b2e2010-04-17 20:07:381293 error("Couldn't truncate temporary file %s: %s",
1294 freq->tmpfile, strerror(errno));
Jeff Lasslett0c4f21e2009-08-10 16:05:061295 goto abort;
1296 }
Tay Ray Chuan5424bc52009-06-06 08:44:021297 }
1298 }
1299
1300 freq->slot = get_active_slot();
1301
1302 curl_easy_setopt(freq->slot->curl, CURLOPT_FILE, freq);
1303 curl_easy_setopt(freq->slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file);
1304 curl_easy_setopt(freq->slot->curl, CURLOPT_ERRORBUFFER, freq->errorstr);
Tay Ray Chuanbb991902009-08-10 15:59:551305 curl_easy_setopt(freq->slot->curl, CURLOPT_URL, freq->url);
Tay Ray Chuan5424bc52009-06-06 08:44:021306 curl_easy_setopt(freq->slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
1307
1308 /*
1309 * If we have successfully processed data from a previous fetch
1310 * attempt, only fetch the data we don't already have.
1311 */
1312 if (prev_posn>0) {
1313 if (http_is_verbose)
1314 fprintf(stderr,
1315 "Resuming fetch of object %s at byte %ld\n",
1316 hex, prev_posn);
1317 sprintf(range, "Range: bytes=%ld-", prev_posn);
1318 range_header = curl_slist_append(range_header, range);
1319 curl_easy_setopt(freq->slot->curl,
1320 CURLOPT_HTTPHEADER, range_header);
1321 }
1322
1323 return freq;
1324
Tay Ray Chuan5424bc52009-06-06 08:44:021325abort:
1326 free(filename);
Tay Ray Chuanbb991902009-08-10 15:59:551327 free(freq->url);
Tay Ray Chuan5424bc52009-06-06 08:44:021328 free(freq);
1329 return NULL;
1330}
1331
1332void process_http_object_request(struct http_object_request *freq)
1333{
1334 if (freq->slot == NULL)
1335 return;
1336 freq->curl_result = freq->slot->curl_result;
1337 freq->http_code = freq->slot->http_code;
1338 freq->slot = NULL;
1339}
1340
1341int finish_http_object_request(struct http_object_request *freq)
1342{
1343 struct stat st;
1344
1345 close(freq->localfile);
1346 freq->localfile = -1;
1347
1348 process_http_object_request(freq);
1349
1350 if (freq->http_code == 416) {
Thiago Farinabd757c12010-01-03 16:20:301351 warning("requested range invalid; we may already have all the data.");
Tay Ray Chuan5424bc52009-06-06 08:44:021352 } else if (freq->curl_result != CURLE_OK) {
1353 if (stat(freq->tmpfile, &st) == 0)
1354 if (st.st_size == 0)
1355 unlink_or_warn(freq->tmpfile);
1356 return -1;
1357 }
1358
1359 git_inflate_end(&freq->stream);
1360 git_SHA1_Final(freq->real_sha1, &freq->c);
1361 if (freq->zret != Z_STREAM_END) {
1362 unlink_or_warn(freq->tmpfile);
1363 return -1;
1364 }
1365 if (hashcmp(freq->sha1, freq->real_sha1)) {
1366 unlink_or_warn(freq->tmpfile);
1367 return -1;
1368 }
1369 freq->rename =
Shawn O. Pearce0da8b2e2010-04-17 20:07:381370 move_temp_to_file(freq->tmpfile, sha1_file_name(freq->sha1));
Tay Ray Chuan5424bc52009-06-06 08:44:021371
1372 return freq->rename;
1373}
1374
1375void abort_http_object_request(struct http_object_request *freq)
1376{
1377 unlink_or_warn(freq->tmpfile);
1378
1379 release_http_object_request(freq);
1380}
1381
1382void release_http_object_request(struct http_object_request *freq)
1383{
1384 if (freq->localfile != -1) {
1385 close(freq->localfile);
1386 freq->localfile = -1;
1387 }
1388 if (freq->url != NULL) {
1389 free(freq->url);
1390 freq->url = NULL;
1391 }
Tay Ray Chuan4b9fa0e2009-08-26 12:20:531392 if (freq->slot != NULL) {
1393 freq->slot->callback_func = NULL;
1394 freq->slot->callback_data = NULL;
1395 release_active_slot(freq->slot);
1396 freq->slot = NULL;
1397 }
Tay Ray Chuan5424bc52009-06-06 08:44:021398}