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3c66d057 | 1 | |
dd11e0b7 | 2 | /* |
2b6662ba | 3 | * $Id: client_side.cc,v 1.523 2001/01/12 00:37:15 wessels Exp $ |
dd11e0b7 | 4 | * |
5 | * DEBUG: section 33 Client-side Routines | |
6 | * AUTHOR: Duane Wessels | |
7 | * | |
2b6662ba | 8 | * SQUID Web Proxy Cache http://www.squid-cache.org/ |
e25c139f | 9 | * ---------------------------------------------------------- |
dd11e0b7 | 10 | * |
2b6662ba | 11 | * Squid is the result of efforts by numerous individuals from |
12 | * the Internet community; see the CONTRIBUTORS file for full | |
13 | * details. Many organizations have provided support for Squid's | |
14 | * development; see the SPONSORS file for full details. Squid is | |
15 | * Copyrighted (C) 2001 by the Regents of the University of | |
16 | * California; see the COPYRIGHT file for full details. Squid | |
17 | * incorporates software developed and/or copyrighted by other | |
18 | * sources; see the CREDITS file for full details. | |
dd11e0b7 | 19 | * |
20 | * This program is free software; you can redistribute it and/or modify | |
21 | * it under the terms of the GNU General Public License as published by | |
22 | * the Free Software Foundation; either version 2 of the License, or | |
23 | * (at your option) any later version. | |
24 | * | |
25 | * This program is distributed in the hope that it will be useful, | |
26 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
27 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
28 | * GNU General Public License for more details. | |
29 | * | |
30 | * You should have received a copy of the GNU General Public License | |
31 | * along with this program; if not, write to the Free Software | |
cbdec147 | 32 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
e25c139f | 33 | * |
dd11e0b7 | 34 | */ |
f88bb09c | 35 | |
36 | #include "squid.h" | |
37 | ||
5cafc1d6 | 38 | #if IPF_TRANSPARENT |
39 | #if HAVE_SYS_IOCTL_H | |
40 | #include <sys/ioctl.h> | |
41 | #endif | |
42 | #include <netinet/tcp.h> | |
43 | #include <net/if.h> | |
42b51993 | 44 | #if HAVE_IP_FIL_COMPAT_H |
45 | #include <ip_fil_compat.h> | |
46 | #elif HAVE_NETINET_IP_FIL_COMPAT_H | |
47 | #include <netinet/ip_fil_compat.h> | |
48 | #elif HAVE_IP_COMPAT_H | |
5cafc1d6 | 49 | #include <ip_compat.h> |
9bc73deb | 50 | #elif HAVE_NETINET_IP_COMPAT_H |
51 | #include <netinet/ip_compat.h> | |
52 | #endif | |
53 | #if HAVE_IP_FIL_H | |
5cafc1d6 | 54 | #include <ip_fil.h> |
9bc73deb | 55 | #elif HAVE_NETINET_IP_FIL_H |
56 | #include <netinet/ip_fil.h> | |
57 | #endif | |
58 | #if HAVE_IP_NAT_H | |
5cafc1d6 | 59 | #include <ip_nat.h> |
9bc73deb | 60 | #elif HAVE_NETINET_IP_NAT_H |
61 | #include <netinet/ip_nat.h> | |
62 | #endif | |
5cafc1d6 | 63 | #endif |
64 | ||
d852fbad | 65 | #if LINUX_NETFILTER |
66 | #include <linux/netfilter_ipv4.h> | |
67 | #endif | |
5cafc1d6 | 68 | |
69 | ||
5492ad1d | 70 | #if LINGERING_CLOSE |
71 | #define comm_close comm_lingering_close | |
72 | #endif | |
73 | ||
7a2f978b | 74 | static const char *const crlf = "\r\n"; |
75 | ||
7a2f978b | 76 | #define FAILURE_MODE_TIME 300 |
77 | ||
78 | /* Local functions */ | |
79 | ||
fc5d6f7f | 80 | static CWCB clientWriteComplete; |
f4f278b5 | 81 | static CWCB clientWriteBodyComplete; |
7a2f978b | 82 | static PF clientReadRequest; |
83 | static PF connStateFree; | |
84 | static PF requestTimeout; | |
b5c39993 | 85 | static PF clientLifetimeTimeout; |
1b02b5be | 86 | static int clientCheckTransferDone(clientHttpRequest *); |
80980266 | 87 | static int clientGotNotEnough(clientHttpRequest *); |
88aad2e5 | 88 | static void checkFailureRatio(err_type, hier_code); |
fb63215a | 89 | static void clientProcessMiss(clientHttpRequest *); |
eeb423fb | 90 | static void clientBuildReplyHeader(clientHttpRequest * http, HttpReply * rep); |
99edd1c3 | 91 | static clientHttpRequest *parseHttpRequestAbort(ConnStateData * conn, const char *uri); |
7a2f978b | 92 | static clientHttpRequest *parseHttpRequest(ConnStateData *, method_t *, int *, char **, size_t *); |
582b6456 | 93 | static RH clientRedirectDone; |
4d55827a | 94 | static void clientCheckNoCache(clientHttpRequest *); |
95 | static void clientCheckNoCacheDone(int answer, void *data); | |
1b02b5be | 96 | static STCB clientHandleIMSReply; |
f5b8bbc4 | 97 | static int clientGetsOldEntry(StoreEntry * new, StoreEntry * old, request_t * request); |
98 | static int checkAccelOnly(clientHttpRequest *); | |
3898f57f | 99 | #if USE_IDENT |
05832ae1 | 100 | static IDCB clientIdentDone; |
3898f57f | 101 | #endif |
7c1d4010 | 102 | static int clientOnlyIfCached(clientHttpRequest * http); |
7a2f978b | 103 | static STCB clientSendMoreData; |
104 | static STCB clientCacheHit; | |
c68e9c6b | 105 | static void clientSetKeepaliveFlag(clientHttpRequest *); |
f6308664 | 106 | static void clientPackRangeHdr(const HttpReply * rep, const HttpHdrRangeSpec * spec, String boundary, MemBuf * mb); |
107 | static void clientPackTermBound(String boundary, MemBuf * mb); | |
99edd1c3 | 108 | static void clientInterpretRequestHeaders(clientHttpRequest *); |
fb63215a | 109 | static void clientProcessRequest(clientHttpRequest *); |
110 | static void clientProcessExpired(void *data); | |
038eb4ed | 111 | static void clientProcessOnlyIfCachedMiss(clientHttpRequest * http); |
50ddd7a4 | 112 | static int clientCachable(clientHttpRequest * http); |
113 | static int clientHierarchical(clientHttpRequest * http); | |
efb9218c | 114 | static int clientCheckContentLength(request_t * r); |
d20b1cd0 | 115 | static DEFER httpAcceptDefer; |
49d3fcb0 | 116 | static log_type clientProcessRequest2(clientHttpRequest * http); |
0483b991 | 117 | static int clientReplyBodyTooLarge(int clen); |
efd900cb | 118 | static int clientRequestBodyTooLarge(int clen); |
94439e4e | 119 | static void clientProcessBody(ConnStateData * conn); |
ea6f43cd | 120 | |
38d7734b | 121 | static int |
382d851a | 122 | checkAccelOnly(clientHttpRequest * http) |
38d7734b | 123 | { |
124 | /* return TRUE if someone makes a proxy request to us and | |
125 | * we are in httpd-accel only mode */ | |
f1dc9b30 | 126 | if (!Config2.Accel.on) |
38d7734b | 127 | return 0; |
17a0a4ee | 128 | if (Config.onoff.accel_with_proxy) |
38d7734b | 129 | return 0; |
382d851a | 130 | if (http->request->protocol == PROTO_CACHEOBJ) |
38d7734b | 131 | return 0; |
77ed547a | 132 | if (http->flags.accel) |
38d7734b | 133 | return 0; |
134 | return 1; | |
135 | } | |
136 | ||
3898f57f | 137 | #if USE_IDENT |
9bc73deb | 138 | static void |
05832ae1 | 139 | clientIdentDone(const char *ident, void *data) |
140 | { | |
141 | ConnStateData *conn = data; | |
94439e4e | 142 | xstrncpy(conn->rfc931, ident ? ident : dash_str, USER_IDENT_SZ); |
05832ae1 | 143 | } |
94439e4e | 144 | |
3898f57f | 145 | #endif |
05832ae1 | 146 | |
4d55827a | 147 | static aclCheck_t * |
a4b8110e | 148 | clientAclChecklistCreate(const acl_access * acl, const clientHttpRequest * http) |
f88bb09c | 149 | { |
4d55827a | 150 | aclCheck_t *ch; |
382d851a | 151 | ConnStateData *conn = http->conn; |
364a0f3d | 152 | ch = aclChecklistCreate(acl, |
382d851a | 153 | http->request, |
94439e4e | 154 | conn->rfc931); |
155 | ||
3898f57f | 156 | /* |
157 | * hack for ident ACL. It needs to get full addresses, and a | |
05832ae1 | 158 | * place to store the ident result on persistent connections... |
159 | */ | |
94439e4e | 160 | /* connection oriented auth also needs these two lines for it's operation. */ |
4d55827a | 161 | ch->conn = conn; |
162 | cbdataLock(ch->conn); | |
94439e4e | 163 | |
4d55827a | 164 | return ch; |
165 | } | |
166 | ||
167 | void | |
168 | clientAccessCheck(void *data) | |
169 | { | |
170 | clientHttpRequest *http = data; | |
171 | if (checkAccelOnly(http)) { | |
307fb3c4 | 172 | /* deny proxy requests in accel_only mode */ |
bdb313a1 | 173 | debug(33, 1) ("clientAccessCheck: proxy request denied in accel_only mode\n"); |
307fb3c4 | 174 | clientAccessCheckDone(ACCESS_DENIED, http); |
4d55827a | 175 | return; |
176 | } | |
177 | http->acl_checklist = clientAclChecklistCreate(Config.accessList.http, http); | |
382d851a | 178 | aclNBCheck(http->acl_checklist, clientAccessCheckDone, http); |
f88bb09c | 179 | } |
180 | ||
7c1d4010 | 181 | /* |
182 | * returns true if client specified that the object must come from the cache | |
96e0684d | 183 | * without contacting origin server |
7c1d4010 | 184 | */ |
185 | static int | |
186 | clientOnlyIfCached(clientHttpRequest * http) | |
187 | { | |
188 | const request_t *r = http->request; | |
189 | assert(r); | |
ea285003 | 190 | return r->cache_control && |
8e092300 | 191 | EBIT_TEST(r->cache_control->mask, CC_ONLY_IF_CACHED); |
7c1d4010 | 192 | } |
193 | ||
23d92c64 | 194 | StoreEntry * |
92695e5e | 195 | clientCreateStoreEntry(clientHttpRequest * h, method_t m, request_flags flags) |
79e0dc20 | 196 | { |
197 | StoreEntry *e; | |
40defb17 | 198 | /* |
199 | * For erroneous requests, we might not have a h->request, | |
200 | * so make a fake one. | |
201 | */ | |
99edd1c3 | 202 | if (h->request == NULL) |
eb824054 | 203 | h->request = requestLink(requestCreate(m, PROTO_NONE, null_string)); |
23d92c64 | 204 | e = storeCreateEntry(h->uri, h->log_uri, flags, m); |
06d2839d | 205 | h->sc = storeClientListAdd(e, h); |
447e176b | 206 | #if DELAY_POOLS |
06d2839d | 207 | delaySetStoreClient(h->sc, delayClient(h->request)); |
447e176b | 208 | #endif |
06d2839d | 209 | storeClientCopy(h->sc, e, 0, 0, CLIENT_SOCK_SZ, |
c68e9c6b | 210 | memAllocate(MEM_CLIENT_SOCK_BUF), clientSendMoreData, h); |
79e0dc20 | 211 | return e; |
212 | } | |
213 | ||
b8d8561b | 214 | void |
75e88d56 | 215 | clientAccessCheckDone(int answer, void *data) |
f88bb09c | 216 | { |
382d851a | 217 | clientHttpRequest *http = data; |
02922e76 | 218 | int page_id = -1; |
1cfdbcf0 | 219 | http_status status; |
9b312a19 | 220 | ErrorState *err = NULL; |
066ed5c1 | 221 | char *proxy_auth_msg = NULL; |
badd8ff0 | 222 | debug(33, 2) ("The request %s %s is %s, because it matched '%s'\n", |
223 | RequestMethodStr[http->request->method], http->uri, | |
9bc73deb | 224 | answer == ACCESS_ALLOWED ? "ALLOWED" : "DENIED", |
60df005c | 225 | AclMatchedName ? AclMatchedName : "NO ACL's"); |
94439e4e | 226 | proxy_auth_msg = authenticateAuthUserRequestMessage(http->conn->auth_user_request ? http->conn->auth_user_request : http->request->auth_user_request); |
382d851a | 227 | http->acl_checklist = NULL; |
fc5d6f7f | 228 | if (answer == ACCESS_ALLOWED) { |
9b5d1d21 | 229 | safe_free(http->uri); |
230 | http->uri = xstrdup(urlCanonical(http->request)); | |
ce66013b | 231 | assert(http->redirect_state == REDIRECT_NONE); |
382d851a | 232 | http->redirect_state = REDIRECT_PENDING; |
233 | redirectStart(http, clientRedirectDone, http); | |
f88bb09c | 234 | } else { |
23d92c64 | 235 | debug(33, 5) ("Access Denied: %s\n", http->uri); |
901e234d | 236 | debug(33, 5) ("AclMatchedName = %s\n", |
6f47fbc7 | 237 | AclMatchedName ? AclMatchedName : "<null>"); |
066ed5c1 | 238 | debug(33, 5) ("Proxy Auth Message = %s\n", |
239 | proxy_auth_msg ? proxy_auth_msg : "<null>"); | |
b6a2f15e | 240 | /* |
241 | * NOTE: get page_id here, based on AclMatchedName because | |
242 | * if USE_DELAY_POOLS is enabled, then AclMatchedName gets | |
243 | * clobbered in the clientCreateStoreEntry() call | |
244 | * just below. Pedro Ribeiro <pribeiro@isel.pt> | |
245 | */ | |
246 | page_id = aclGetDenyInfoPage(&Config.denyInfoList, AclMatchedName); | |
79a15e0a | 247 | http->log_type = LOG_TCP_DENIED; |
c68e9c6b | 248 | http->entry = clientCreateStoreEntry(http, http->request->method, |
249 | null_request_flags); | |
1cfdbcf0 | 250 | if (answer == ACCESS_REQ_PROXY_AUTH || aclIsProxyAuth(AclMatchedName)) { |
251 | if (!http->flags.accel) { | |
252 | /* Proxy authorisation needed */ | |
253 | status = HTTP_PROXY_AUTHENTICATION_REQUIRED; | |
254 | } else { | |
255 | /* WWW authorisation needed */ | |
256 | status = HTTP_UNAUTHORIZED; | |
257 | } | |
258 | if (page_id <= 0) | |
259 | page_id = ERR_CACHE_ACCESS_DENIED; | |
260 | } else { | |
261 | status = HTTP_FORBIDDEN; | |
262 | if (page_id <= 0) | |
263 | page_id = ERR_ACCESS_DENIED; | |
264 | } | |
265 | err = errorCon(page_id, status); | |
02922e76 | 266 | err->request = requestLink(http->request); |
267 | err->src_addr = http->conn->peer.sin_addr; | |
94439e4e | 268 | if (http->conn->auth_user_request) |
269 | err->auth_user_request = http->conn->auth_user_request; | |
270 | else if (http->request->auth_user_request) | |
271 | err->auth_user_request = http->request->auth_user_request; | |
272 | /* lock for the error state */ | |
273 | if (err->auth_user_request) | |
274 | authenticateAuthUserRequestLock(err->auth_user_request); | |
066ed5c1 | 275 | err->callback_data = NULL; |
02922e76 | 276 | errorAppendEntry(http->entry, err); |
f88bb09c | 277 | } |
278 | } | |
279 | ||
b8d8561b | 280 | static void |
281 | clientRedirectDone(void *data, char *result) | |
f88bb09c | 282 | { |
382d851a | 283 | clientHttpRequest *http = data; |
c0cdaf99 | 284 | request_t *new_request = NULL; |
382d851a | 285 | request_t *old_request = http->request; |
23d92c64 | 286 | debug(33, 5) ("clientRedirectDone: '%s' result=%s\n", http->uri, |
f88bb09c | 287 | result ? result : "NULL"); |
ce66013b | 288 | assert(http->redirect_state == REDIRECT_PENDING); |
382d851a | 289 | http->redirect_state = REDIRECT_DONE; |
6d38ef86 | 290 | if (result) { |
291 | http_status status = atoi(result); | |
292 | if (status == 301 || status == 302) { | |
293 | char *t = result; | |
294 | if ((t = strchr(result, ':')) != NULL) { | |
295 | http->redirect.status = status; | |
21f2031d | 296 | http->redirect.location = xstrdup(t + 1); |
6d38ef86 | 297 | } else { |
21f2031d | 298 | debug(33, 1) ("clientRedirectDone: bad input: %s\n", result); |
6d38ef86 | 299 | } |
300 | } | |
301 | if (strcmp(result, http->uri)) | |
302 | new_request = urlParse(old_request->method, result); | |
303 | } | |
c0cdaf99 | 304 | if (new_request) { |
23d92c64 | 305 | safe_free(http->uri); |
9b5d1d21 | 306 | http->uri = xstrdup(urlCanonical(new_request)); |
20cc1450 | 307 | new_request->http_ver = old_request->http_ver; |
2246b732 | 308 | httpHeaderAppend(&new_request->header, &old_request->header); |
77ed547a | 309 | new_request->client_addr = old_request->client_addr; |
3c11d1f5 | 310 | new_request->my_addr = old_request->my_addr; |
7e3ce7b9 | 311 | new_request->my_port = old_request->my_port; |
92695e5e | 312 | new_request->flags.redirected = 1; |
94439e4e | 313 | new_request->auth_user_request = old_request->auth_user_request; |
314 | if (old_request->body_connection) { | |
315 | new_request->body_connection = old_request->body_connection; | |
316 | old_request->body_connection = NULL; | |
6cf028ab | 317 | } |
7e3ce7b9 | 318 | new_request->content_length = old_request->content_length; |
2045a403 | 319 | new_request->flags.proxy_keepalive = old_request->flags.proxy_keepalive; |
20cc1450 | 320 | requestUnlink(old_request); |
382d851a | 321 | http->request = requestLink(new_request); |
f88bb09c | 322 | } |
99edd1c3 | 323 | clientInterpretRequestHeaders(http); |
0421724f | 324 | #if HEADERS_LOG |
325 | headersLog(0, 1, request->method, request); | |
326 | #endif | |
23d92c64 | 327 | fd_note(http->conn->fd, http->uri); |
4d55827a | 328 | clientCheckNoCache(http); |
329 | } | |
330 | ||
331 | static void | |
332 | clientCheckNoCache(clientHttpRequest * http) | |
333 | { | |
334 | if (Config.accessList.noCache && http->request->flags.cachable) { | |
335 | http->acl_checklist = clientAclChecklistCreate(Config.accessList.noCache, http); | |
336 | aclNBCheck(http->acl_checklist, clientCheckNoCacheDone, http); | |
337 | } else { | |
338 | clientCheckNoCacheDone(http->request->flags.cachable, http); | |
339 | } | |
340 | } | |
341 | ||
342 | void | |
343 | clientCheckNoCacheDone(int answer, void *data) | |
344 | { | |
345 | clientHttpRequest *http = data; | |
346 | http->request->flags.cachable = answer; | |
347 | http->acl_checklist = NULL; | |
fb63215a | 348 | clientProcessRequest(http); |
e81957b7 | 349 | } |
350 | ||
fb63215a | 351 | static void |
352 | clientProcessExpired(void *data) | |
620da955 | 353 | { |
382d851a | 354 | clientHttpRequest *http = data; |
23d92c64 | 355 | char *url = http->uri; |
620da955 | 356 | StoreEntry *entry = NULL; |
23d92c64 | 357 | debug(33, 3) ("clientProcessExpired: '%s'\n", http->uri); |
b9d34cc1 | 358 | assert(http->entry->lastmod >= 0); |
7c1d4010 | 359 | /* |
360 | * check if we are allowed to contact other servers | |
361 | * @?@: Instead of a 504 (Gateway Timeout) reply, we may want to return | |
6106c6fc | 362 | * a stale entry *if* it matches client requirements |
7c1d4010 | 363 | */ |
364 | if (clientOnlyIfCached(http)) { | |
365 | clientProcessOnlyIfCachedMiss(http); | |
366 | return; | |
367 | } | |
92695e5e | 368 | http->request->flags.refresh = 1; |
382d851a | 369 | http->old_entry = http->entry; |
57ec8214 | 370 | http->old_sc = http->sc; |
b6a2f15e | 371 | /* |
372 | * Assert that 'http' is already a client of old_entry. If | |
373 | * it is not, then the beginning of the object data might get | |
374 | * freed from memory before we need to access it. | |
375 | */ | |
57ec8214 | 376 | assert(http->sc->callback_data == http); |
620da955 | 377 | entry = storeCreateEntry(url, |
23d92c64 | 378 | http->log_uri, |
382d851a | 379 | http->request->flags, |
380 | http->request->method); | |
620da955 | 381 | /* NOTE, don't call storeLockObject(), storeCreateEntry() does it */ |
06d2839d | 382 | http->sc = storeClientListAdd(entry, http); |
447e176b | 383 | #if DELAY_POOLS |
59715b38 | 384 | /* delay_id is already set on original store client */ |
06d2839d | 385 | delaySetStoreClient(http->sc, delayClient(http->request)); |
447e176b | 386 | #endif |
9bc73deb | 387 | http->request->lastmod = http->old_entry->lastmod; |
1c3e77cd | 388 | debug(33, 5) ("clientProcessExpired: lastmod %d\n", (int) entry->lastmod); |
382d851a | 389 | http->entry = entry; |
390 | http->out.offset = 0; | |
7e3ce7b9 | 391 | fwdStart(http->conn->fd, http->entry, http->request); |
f990cccc | 392 | /* Register with storage manager to receive updates when data comes in. */ |
b7fe0ab0 | 393 | if (EBIT_TEST(entry->flags, ENTRY_ABORTED)) |
394 | debug(33, 0) ("clientProcessExpired: found ENTRY_ABORTED object\n"); | |
06d2839d | 395 | storeClientCopy(http->sc, entry, |
fe96bbe6 | 396 | http->out.offset, |
d89d1fb6 | 397 | http->out.offset, |
cc27d775 | 398 | CLIENT_SOCK_SZ, |
399 | memAllocate(MEM_CLIENT_SOCK_BUF), | |
1b02b5be | 400 | clientHandleIMSReply, |
d89d1fb6 | 401 | http); |
620da955 | 402 | } |
403 | ||
91f4d519 | 404 | static int |
405 | clientGetsOldEntry(StoreEntry * new_entry, StoreEntry * old_entry, request_t * request) | |
406 | { | |
71a8a965 | 407 | const http_status status = new_entry->mem_obj->reply->sline.status; |
408 | if (0 == status) { | |
409 | debug(33, 5) ("clientGetsOldEntry: YES, broken HTTP reply\n"); | |
410 | return 1; | |
411 | } | |
a05cea5b | 412 | /* If the reply is a failure then send the old object as a last |
413 | * resort */ | |
414 | if (status >= 500 && status < 600) { | |
badd8ff0 | 415 | debug(33, 3) ("clientGetsOldEntry: YES, failure reply=%d\n", status); |
a05cea5b | 416 | return 1; |
417 | } | |
91f4d519 | 418 | /* If the reply is anything but "Not Modified" then |
419 | * we must forward it to the client */ | |
71a8a965 | 420 | if (HTTP_NOT_MODIFIED != status) { |
cb69b4c7 | 421 | debug(33, 5) ("clientGetsOldEntry: NO, reply=%d\n", status); |
91f4d519 | 422 | return 0; |
423 | } | |
424 | /* If the client did not send IMS in the request, then it | |
425 | * must get the old object, not this "Not Modified" reply */ | |
92695e5e | 426 | if (!request->flags.ims) { |
a3d5953d | 427 | debug(33, 5) ("clientGetsOldEntry: YES, no client IMS\n"); |
91f4d519 | 428 | return 1; |
429 | } | |
430 | /* If the client IMS time is prior to the entry LASTMOD time we | |
431 | * need to send the old object */ | |
432 | if (modifiedSince(old_entry, request)) { | |
5f6ac48b | 433 | debug(33, 5) ("clientGetsOldEntry: YES, modified since %d\n", |
1afe05c5 | 434 | (int) request->ims); |
91f4d519 | 435 | return 1; |
436 | } | |
a3d5953d | 437 | debug(33, 5) ("clientGetsOldEntry: NO, new one is fine\n"); |
91f4d519 | 438 | return 0; |
439 | } | |
440 | ||
441 | ||
52d4522b | 442 | static void |
1b02b5be | 443 | clientHandleIMSReply(void *data, char *buf, ssize_t size) |
620da955 | 444 | { |
382d851a | 445 | clientHttpRequest *http = data; |
382d851a | 446 | StoreEntry *entry = http->entry; |
b6a2f15e | 447 | MemObject *mem; |
9fb13bb6 | 448 | const char *url = storeUrl(entry); |
e92d33a5 | 449 | int unlink_request = 0; |
76cff1d4 | 450 | StoreEntry *oldentry; |
49d3fcb0 | 451 | int recopy = 1; |
b6a2f15e | 452 | http_status status; |
93f9abd0 | 453 | debug(33, 3) ("clientHandleIMSReply: %s, %d bytes\n", url, (int) size); |
b6a2f15e | 454 | if (entry == NULL) { |
455 | memFree(buf, MEM_CLIENT_SOCK_BUF); | |
456 | return; | |
457 | } | |
b8890359 | 458 | if (size < 0 && !EBIT_TEST(entry->flags, ENTRY_ABORTED)) { |
459 | memFree(buf, MEM_CLIENT_SOCK_BUF); | |
77b32a34 | 460 | return; |
b8890359 | 461 | } |
b6a2f15e | 462 | mem = entry->mem_obj; |
463 | status = mem->reply->sline.status; | |
b7fe0ab0 | 464 | if (EBIT_TEST(entry->flags, ENTRY_ABORTED)) { |
1b02b5be | 465 | debug(33, 3) ("clientHandleIMSReply: ABORTED '%s'\n", url); |
c54e9052 | 466 | /* We have an existing entry, but failed to validate it */ |
accc6d47 | 467 | /* Its okay to send the old one anyway */ |
468 | http->log_type = LOG_TCP_REFRESH_FAIL_HIT; | |
06d2839d | 469 | storeUnregister(http->sc, entry, http); |
accc6d47 | 470 | storeUnlockObject(entry); |
471 | entry = http->entry = http->old_entry; | |
57ec8214 | 472 | http->sc = http->old_sc; |
71a8a965 | 473 | } else if (STORE_PENDING == entry->store_status && 0 == status) { |
1b02b5be | 474 | debug(33, 3) ("clientHandleIMSReply: Incomplete headers for '%s'\n", url); |
cc27d775 | 475 | if (size >= CLIENT_SOCK_SZ) { |
4455552a | 476 | /* will not get any bigger than that */ |
477 | debug(33, 3) ("clientHandleIMSReply: Reply is too large '%s', using old entry\n", url); | |
878570db | 478 | /* use old entry, this repeats the code abovez */ |
4455552a | 479 | http->log_type = LOG_TCP_REFRESH_FAIL_HIT; |
06d2839d | 480 | storeUnregister(http->sc, entry, http); |
743eebfa | 481 | storeUnlockObject(entry); |
4455552a | 482 | entry = http->entry = http->old_entry; |
57ec8214 | 483 | http->sc = http->old_sc; |
878570db | 484 | /* continue */ |
4455552a | 485 | } else { |
06d2839d | 486 | storeClientCopy(http->sc, entry, |
4455552a | 487 | http->out.offset + size, |
488 | http->out.offset, | |
cc27d775 | 489 | CLIENT_SOCK_SZ, |
49d3fcb0 | 490 | buf, |
4455552a | 491 | clientHandleIMSReply, |
492 | http); | |
878570db | 493 | return; |
4455552a | 494 | } |
382d851a | 495 | } else if (clientGetsOldEntry(entry, http->old_entry, http->request)) { |
620da955 | 496 | /* We initiated the IMS request, the client is not expecting |
76cff1d4 | 497 | * 304, so put the good one back. First, make sure the old entry |
498 | * headers have been loaded from disk. */ | |
382d851a | 499 | oldentry = http->old_entry; |
382d851a | 500 | http->log_type = LOG_TCP_REFRESH_HIT; |
d89d1fb6 | 501 | if (oldentry->mem_obj->request == NULL) { |
502 | oldentry->mem_obj->request = requestLink(mem->request); | |
503 | unlink_request = 1; | |
e92d33a5 | 504 | } |
64763c37 | 505 | /* Don't memcpy() the whole reply structure here. For example, |
506 | * www.thegist.com (Netscape/1.13) returns a content-length for | |
507 | * 304's which seems to be the length of the 304 HEADERS!!! and | |
508 | * not the body they refer to. */ | |
71a8a965 | 509 | httpReplyUpdateOnNotModified(oldentry->mem_obj->reply, mem->reply); |
d89d1fb6 | 510 | storeTimestampsSet(oldentry); |
06d2839d | 511 | storeUnregister(http->sc, entry, http); |
57ec8214 | 512 | http->sc = http->old_sc; |
6d54aea8 | 513 | storeUnlockObject(entry); |
382d851a | 514 | entry = http->entry = oldentry; |
41fad779 | 515 | entry->timestamp = squid_curtime; |
657266fe | 516 | if (unlink_request) { |
e92d33a5 | 517 | requestUnlink(entry->mem_obj->request); |
657266fe | 518 | entry->mem_obj->request = NULL; |
519 | } | |
620da955 | 520 | } else { |
521 | /* the client can handle this reply, whatever it is */ | |
382d851a | 522 | http->log_type = LOG_TCP_REFRESH_MISS; |
71a8a965 | 523 | if (HTTP_NOT_MODIFIED == mem->reply->sline.status) { |
cb4eb1ae | 524 | httpReplyUpdateOnNotModified(http->old_entry->mem_obj->reply, |
525 | mem->reply); | |
526 | storeTimestampsSet(http->old_entry); | |
382d851a | 527 | http->log_type = LOG_TCP_REFRESH_HIT; |
d1a43e28 | 528 | } |
57ec8214 | 529 | storeUnregister(http->old_sc, http->old_entry, http); |
382d851a | 530 | storeUnlockObject(http->old_entry); |
49d3fcb0 | 531 | recopy = 0; |
620da955 | 532 | } |
382d851a | 533 | http->old_entry = NULL; /* done with old_entry */ |
57ec8214 | 534 | http->old_sc = NULL; |
b7fe0ab0 | 535 | assert(!EBIT_TEST(entry->flags, ENTRY_ABORTED)); |
49d3fcb0 | 536 | if (recopy) { |
06d2839d | 537 | storeClientCopy(http->sc, entry, |
49d3fcb0 | 538 | http->out.offset, |
539 | http->out.offset, | |
cc27d775 | 540 | CLIENT_SOCK_SZ, |
49d3fcb0 | 541 | buf, |
542 | clientSendMoreData, | |
543 | http); | |
544 | } else { | |
545 | clientSendMoreData(data, buf, size); | |
6cf028ab | 546 | } |
620da955 | 547 | } |
91f4d519 | 548 | |
549 | int | |
304d07cb | 550 | modifiedSince(StoreEntry * entry, request_t * request) |
91f4d519 | 551 | { |
552 | int object_length; | |
553 | MemObject *mem = entry->mem_obj; | |
1c3e77cd | 554 | time_t mod_time = entry->lastmod; |
9fb13bb6 | 555 | debug(33, 3) ("modifiedSince: '%s'\n", storeUrl(entry)); |
1c3e77cd | 556 | if (mod_time < 0) |
557 | mod_time = entry->timestamp; | |
0cdcddb9 | 558 | debug(33, 3) ("modifiedSince: mod_time = %d\n", (int) mod_time); |
1c3e77cd | 559 | if (mod_time < 0) |
91f4d519 | 560 | return 1; |
561 | /* Find size of the object */ | |
038eb4ed | 562 | object_length = mem->reply->content_length; |
cb69b4c7 | 563 | if (object_length < 0) |
07304bf9 | 564 | object_length = contentLen(entry); |
1c3e77cd | 565 | if (mod_time > request->ims) { |
a3d5953d | 566 | debug(33, 3) ("--> YES: entry newer than client\n"); |
91f4d519 | 567 | return 1; |
1c3e77cd | 568 | } else if (mod_time < request->ims) { |
a3d5953d | 569 | debug(33, 3) ("--> NO: entry older than client\n"); |
91f4d519 | 570 | return 0; |
571 | } else if (request->imslen < 0) { | |
a3d5953d | 572 | debug(33, 3) ("--> NO: same LMT, no client length\n"); |
91f4d519 | 573 | return 0; |
574 | } else if (request->imslen == object_length) { | |
a3d5953d | 575 | debug(33, 3) ("--> NO: same LMT, same length\n"); |
91f4d519 | 576 | return 0; |
577 | } else { | |
a3d5953d | 578 | debug(33, 3) ("--> YES: same LMT, different length\n"); |
91f4d519 | 579 | return 1; |
580 | } | |
581 | } | |
b3b64e58 | 582 | |
a90eae18 | 583 | void |
382d851a | 584 | clientPurgeRequest(clientHttpRequest * http) |
a90eae18 | 585 | { |
a90eae18 | 586 | StoreEntry *entry; |
9b312a19 | 587 | ErrorState *err = NULL; |
8d6da567 | 588 | HttpReply *r; |
2addf420 | 589 | http_status status; |
ccf44862 | 590 | http_version_t version; |
d20b1cd0 | 591 | debug(33, 3) ("Config2.onoff.enable_purge = %d\n", Config2.onoff.enable_purge); |
53cb32a9 | 592 | if (!Config2.onoff.enable_purge) { |
79a15e0a | 593 | http->log_type = LOG_TCP_DENIED; |
fe40a877 | 594 | err = errorCon(ERR_ACCESS_DENIED, HTTP_FORBIDDEN); |
9b312a19 | 595 | err->request = requestLink(http->request); |
596 | err->src_addr = http->conn->peer.sin_addr; | |
92695e5e | 597 | http->entry = clientCreateStoreEntry(http, http->request->method, null_request_flags); |
79e0dc20 | 598 | errorAppendEntry(http->entry, err); |
a90eae18 | 599 | return; |
600 | } | |
382d851a | 601 | http->log_type = LOG_TCP_MISS; |
afc1e43f | 602 | /* Release both IP and object cache entries */ |
603 | ipcacheInvalidate(http->request->host); | |
2f9aa365 | 604 | if ((entry = storeGetPublic(http->uri, METHOD_GET)) == NULL) { |
2addf420 | 605 | status = HTTP_NOT_FOUND; |
a90eae18 | 606 | } else { |
607 | storeRelease(entry); | |
2addf420 | 608 | status = HTTP_OK; |
a90eae18 | 609 | } |
49d3fcb0 | 610 | debug(33, 4) ("clientPurgeRequest: Not modified '%s'\n", |
afa9f1cd | 611 | storeUrl(entry)); |
612 | /* | |
613 | * Make a new entry to hold the reply to be written | |
614 | * to the client. | |
615 | */ | |
92695e5e | 616 | http->entry = clientCreateStoreEntry(http, http->request->method, null_request_flags); |
8d6da567 | 617 | httpReplyReset(r = http->entry->mem_obj->reply); |
bffee5af | 618 | httpBuildVersion(&version, 1, 0); |
ccf44862 | 619 | httpReplySetHeaders(r, version, status, NULL, NULL, 0, 0, -1); |
8d6da567 | 620 | httpReplySwapOut(r, http->entry); |
afa9f1cd | 621 | storeComplete(http->entry); |
a90eae18 | 622 | } |
e33ba616 | 623 | |
624 | int | |
ea3a2a69 | 625 | checkNegativeHit(StoreEntry * e) |
e33ba616 | 626 | { |
d46a87a8 | 627 | if (!EBIT_TEST(e->flags, ENTRY_NEGCACHED)) |
ea3a2a69 | 628 | return 0; |
629 | if (e->expires <= squid_curtime) | |
630 | return 0; | |
631 | if (e->store_status != STORE_OK) | |
632 | return 0; | |
633 | return 1; | |
e33ba616 | 634 | } |
7a2f978b | 635 | |
a7c05555 | 636 | void |
0e473d70 | 637 | clientUpdateCounters(clientHttpRequest * http) |
a7c05555 | 638 | { |
ee1679df | 639 | int svc_time = tvSubMsec(http->start, current_time); |
b4e7f82d | 640 | ping_data *i; |
39edba21 | 641 | HierarchyLogEntry *H; |
83704487 | 642 | statCounter.client_http.requests++; |
d8b83480 | 643 | if (isTcpHit(http->log_type)) |
83704487 | 644 | statCounter.client_http.hits++; |
4f4d1d6e | 645 | if (http->log_type == LOG_TCP_HIT) |
83704487 | 646 | statCounter.client_http.disk_hits++; |
4f4d1d6e | 647 | else if (http->log_type == LOG_TCP_MEM_HIT) |
83704487 | 648 | statCounter.client_http.mem_hits++; |
0e473d70 | 649 | if (http->request->err_type != ERR_NONE) |
83704487 | 650 | statCounter.client_http.errors++; |
651 | statHistCount(&statCounter.client_http.all_svc_time, svc_time); | |
ee1679df | 652 | /* |
653 | * The idea here is not to be complete, but to get service times | |
654 | * for only well-defined types. For example, we don't include | |
655 | * LOG_TCP_REFRESH_FAIL_HIT because its not really a cache hit | |
656 | * (we *tried* to validate it, but failed). | |
657 | */ | |
658 | switch (http->log_type) { | |
7c9c84ad | 659 | case LOG_TCP_REFRESH_HIT: |
83704487 | 660 | statHistCount(&statCounter.client_http.nh_svc_time, svc_time); |
7c9c84ad | 661 | break; |
ee1679df | 662 | case LOG_TCP_IMS_HIT: |
83704487 | 663 | statHistCount(&statCounter.client_http.nm_svc_time, svc_time); |
ee1679df | 664 | break; |
665 | case LOG_TCP_HIT: | |
666 | case LOG_TCP_MEM_HIT: | |
b540e168 | 667 | case LOG_TCP_OFFLINE_HIT: |
83704487 | 668 | statHistCount(&statCounter.client_http.hit_svc_time, svc_time); |
ee1679df | 669 | break; |
670 | case LOG_TCP_MISS: | |
671 | case LOG_TCP_CLIENT_REFRESH_MISS: | |
83704487 | 672 | statHistCount(&statCounter.client_http.miss_svc_time, svc_time); |
ee1679df | 673 | break; |
674 | default: | |
675 | /* make compiler warnings go away */ | |
676 | break; | |
677 | } | |
39edba21 | 678 | H = &http->request->hier; |
69c95dd3 | 679 | switch (H->alg) { |
680 | case PEER_SA_DIGEST: | |
83704487 | 681 | statCounter.cd.times_used++; |
69c95dd3 | 682 | break; |
683 | case PEER_SA_ICP: | |
83704487 | 684 | statCounter.icp.times_used++; |
b4e7f82d | 685 | i = &H->ping; |
69c95dd3 | 686 | if (0 != i->stop.tv_sec && 0 != i->start.tv_sec) |
83704487 | 687 | statHistCount(&statCounter.icp.query_svc_time, |
69c95dd3 | 688 | tvSubUsec(i->start, i->stop)); |
689 | if (i->timeout) | |
83704487 | 690 | statCounter.icp.query_timeouts++; |
69c95dd3 | 691 | break; |
692 | case PEER_SA_NETDB: | |
83704487 | 693 | statCounter.netdb.times_used++; |
69c95dd3 | 694 | break; |
695 | default: | |
696 | break; | |
17b6e784 | 697 | } |
a7c05555 | 698 | } |
699 | ||
7a2f978b | 700 | static void |
701 | httpRequestFree(void *data) | |
702 | { | |
703 | clientHttpRequest *http = data; | |
704 | clientHttpRequest **H; | |
705 | ConnStateData *conn = http->conn; | |
b6a2f15e | 706 | StoreEntry *e; |
7a2f978b | 707 | request_t *request = http->request; |
708 | MemObject *mem = NULL; | |
b6a2f15e | 709 | debug(33, 3) ("httpRequestFree: %s\n", storeUrl(http->entry)); |
1b02b5be | 710 | if (!clientCheckTransferDone(http)) { |
94439e4e | 711 | if (request && request->body_connection) |
712 | clientAbortBody(request); /* abort body transter */ | |
bbf5ef83 | 713 | #if MYSTERIOUS_CODE |
714 | /* | |
715 | * DW: this seems odd here, is it really needed? It causes | |
716 | * incomplete transfers to get logged with "000" status | |
717 | * code because http->entry becomes NULL. | |
718 | */ | |
b6a2f15e | 719 | if ((e = http->entry)) { |
720 | http->entry = NULL; | |
06d2839d | 721 | storeUnregister(http->sc, e, http); |
b6a2f15e | 722 | storeUnlockObject(e); |
723 | } | |
bbf5ef83 | 724 | #endif |
b6a2f15e | 725 | if (http->entry && http->entry->ping_status == PING_WAITING) |
726 | storeReleaseRequest(http->entry); | |
7a2f978b | 727 | } |
728 | assert(http->log_type < LOG_TYPE_MAX); | |
b6a2f15e | 729 | if (http->entry) |
730 | mem = http->entry->mem_obj; | |
7a2f978b | 731 | if (http->out.size || http->log_type) { |
728da2ee | 732 | http->al.icp.opcode = ICP_INVALID; |
ef65d6ca | 733 | http->al.url = http->log_uri; |
734 | debug(33, 9) ("httpRequestFree: al.url='%s'\n", http->al.url); | |
7a2f978b | 735 | if (mem) { |
cb69b4c7 | 736 | http->al.http.code = mem->reply->sline.status; |
038eb4ed | 737 | http->al.http.content_type = strBuf(mem->reply->content_type); |
7a2f978b | 738 | } |
739 | http->al.cache.caddr = conn->log_addr; | |
740 | http->al.cache.size = http->out.size; | |
741 | http->al.cache.code = http->log_type; | |
742 | http->al.cache.msec = tvSubMsec(http->start, current_time); | |
7a2f978b | 743 | if (request) { |
2246b732 | 744 | Packer p; |
745 | MemBuf mb; | |
746 | memBufDefInit(&mb); | |
747 | packerToMemInit(&p, &mb); | |
748 | httpHeaderPackInto(&request->header, &p); | |
7a2f978b | 749 | http->al.http.method = request->method; |
c68e9c6b | 750 | http->al.http.version = request->http_ver; |
2246b732 | 751 | http->al.headers.request = xstrdup(mb.buf); |
7a2f978b | 752 | http->al.hier = request->hier; |
94439e4e | 753 | if (request->auth_user_request) { |
754 | http->al.cache.authuser = xstrdup(authenticateUserRequestUsername(request->auth_user_request)); | |
755 | authenticateAuthUserRequestUnlock(request->auth_user_request); | |
756 | request->auth_user_request = NULL; | |
757 | } | |
758 | if (conn->rfc931[0]) | |
759 | http->al.cache.rfc931 = conn->rfc931; | |
2246b732 | 760 | packerClean(&p); |
761 | memBufClean(&mb); | |
7a2f978b | 762 | } |
763 | accessLogLog(&http->al); | |
a7c05555 | 764 | clientUpdateCounters(http); |
6f47fbc7 | 765 | clientdbUpdate(conn->peer.sin_addr, http->log_type, PROTO_HTTP, http->out.size); |
7a2f978b | 766 | } |
7a2f978b | 767 | if (http->acl_checklist) |
768 | aclChecklistFree(http->acl_checklist); | |
88aad2e5 | 769 | if (request) |
c24fca87 | 770 | checkFailureRatio(request->err_type, http->al.hier.code); |
23d92c64 | 771 | safe_free(http->uri); |
772 | safe_free(http->log_uri); | |
2246b732 | 773 | safe_free(http->al.headers.request); |
7a2f978b | 774 | safe_free(http->al.headers.reply); |
6d38ef86 | 775 | safe_free(http->redirect.location); |
d192d11f | 776 | stringClean(&http->range_iter.boundary); |
b6a2f15e | 777 | if ((e = http->entry)) { |
7a2f978b | 778 | http->entry = NULL; |
06d2839d | 779 | storeUnregister(http->sc, e, http); |
e1dcf02d | 780 | http->sc = NULL; |
b6a2f15e | 781 | storeUnlockObject(e); |
7a2f978b | 782 | } |
783 | /* old_entry might still be set if we didn't yet get the reply | |
1b02b5be | 784 | * code in clientHandleIMSReply() */ |
b6a2f15e | 785 | if ((e = http->old_entry)) { |
7a2f978b | 786 | http->old_entry = NULL; |
13f14b78 | 787 | storeUnregister(http->old_sc, e, http); |
e1dcf02d | 788 | http->old_sc = NULL; |
b6a2f15e | 789 | storeUnlockObject(e); |
7a2f978b | 790 | } |
791 | requestUnlink(http->request); | |
792 | assert(http != http->next); | |
793 | assert(http->conn->chr != NULL); | |
94439e4e | 794 | /* Unlink us from the clients request list */ |
7a2f978b | 795 | H = &http->conn->chr; |
796 | while (*H) { | |
797 | if (*H == http) | |
798 | break; | |
799 | H = &(*H)->next; | |
800 | } | |
801 | assert(*H != NULL); | |
802 | *H = http->next; | |
803 | http->next = NULL; | |
0f1bc304 | 804 | dlinkDelete(&http->active, &ClientActiveRequests); |
7a2f978b | 805 | cbdataFree(http); |
806 | } | |
807 | ||
808 | /* This is a handler normally called by comm_close() */ | |
809 | static void | |
810 | connStateFree(int fd, void *data) | |
811 | { | |
812 | ConnStateData *connState = data; | |
813 | clientHttpRequest *http; | |
93f9abd0 | 814 | debug(33, 3) ("connStateFree: FD %d\n", fd); |
7a2f978b | 815 | assert(connState != NULL); |
94439e4e | 816 | authenticateOnCloseConnection(connState); |
9bc73deb | 817 | clientdbEstablished(connState->peer.sin_addr, -1); /* decrement */ |
79d39a72 | 818 | while ((http = connState->chr) != NULL) { |
7a2f978b | 819 | assert(http->conn == connState); |
820 | assert(connState->chr != connState->chr->next); | |
821 | httpRequestFree(http); | |
822 | } | |
58cd5bbd | 823 | if (connState->in.size == CLIENT_REQ_BUF_SZ) |
824 | memFree(connState->in.buf, MEM_CLIENT_REQ_BUF); | |
825 | else | |
826 | safe_free(connState->in.buf); | |
59c4d35b | 827 | /* XXX account connState->in.buf */ |
7a2f978b | 828 | pconnHistCount(0, connState->nrequests); |
829 | cbdataFree(connState); | |
403028a9 | 830 | #ifdef _SQUID_LINUX_ |
831 | /* prevent those nasty RST packets */ | |
832 | { | |
833 | char buf[SQUID_TCP_SO_RCVBUF]; | |
92b74dd5 | 834 | while (read(fd, buf, SQUID_TCP_SO_RCVBUF) > 0); |
403028a9 | 835 | } |
836 | #endif | |
7a2f978b | 837 | } |
838 | ||
839 | static void | |
99edd1c3 | 840 | clientInterpretRequestHeaders(clientHttpRequest * http) |
7a2f978b | 841 | { |
842 | request_t *request = http->request; | |
99edd1c3 | 843 | const HttpHeader *req_hdr = &request->header; |
16f019f5 | 844 | int no_cache = 0; |
99edd1c3 | 845 | const char *str; |
99edd1c3 | 846 | request->imslen = -1; |
847 | request->ims = httpHeaderGetTime(req_hdr, HDR_IF_MODIFIED_SINCE); | |
848 | if (request->ims > 0) | |
92695e5e | 849 | request->flags.ims = 1; |
99edd1c3 | 850 | if (httpHeaderHas(req_hdr, HDR_PRAGMA)) { |
851 | String s = httpHeaderGetList(req_hdr, HDR_PRAGMA); | |
16f019f5 | 852 | if (strListIsMember(&s, "no-cache", ',')) |
853 | no_cache++; | |
854 | stringClean(&s); | |
855 | } | |
9bc73deb | 856 | request->cache_control = httpHeaderGetCc(req_hdr); |
16f019f5 | 857 | if (request->cache_control) |
858 | if (EBIT_TEST(request->cache_control->mask, CC_NO_CACHE)) | |
859 | no_cache++; | |
7613d09c | 860 | /* Work around for supporting the Reload button in IE browsers |
861 | * when Squid is used as an accelerator or transparent proxy, | |
862 | * by turning accelerated IMS request to no-cache requests. | |
863 | * Now knows about IE 5.5 fix (is actually only fixed in SP1, | |
864 | * but we can't tell whether we are talking to SP1 or not so | |
865 | * all 5.5 versions are treated 'normally'). | |
f0debecb | 866 | */ |
7613d09c | 867 | if (Config.onoff.ie_refresh) { |
f0debecb | 868 | if (http->flags.accel && request->flags.ims) { |
869 | if ((str = httpHeaderGetStr(req_hdr, HDR_USER_AGENT))) { | |
870 | if (strstr(str, "MSIE 5.01") != NULL) | |
871 | no_cache++; | |
872 | else if (strstr(str, "MSIE 5.0") != NULL) | |
873 | no_cache++; | |
874 | else if (strstr(str, "MSIE 4.") != NULL) | |
875 | no_cache++; | |
876 | else if (strstr(str, "MSIE 3.") != NULL) | |
877 | no_cache++; | |
878 | } | |
879 | } | |
7613d09c | 880 | } |
16f019f5 | 881 | if (no_cache) { |
9f60cfdf | 882 | #if HTTP_VIOLATIONS |
16f019f5 | 883 | if (Config.onoff.reload_into_ims) |
884 | request->flags.nocache_hack = 1; | |
885 | else if (refresh_nocache_hack) | |
886 | request->flags.nocache_hack = 1; | |
887 | else | |
9f60cfdf | 888 | #endif |
16f019f5 | 889 | request->flags.nocache = 1; |
7a2f978b | 890 | } |
4b315324 | 891 | /* ignore range header in non-GETs */ |
892 | if (request->method == METHOD_GET) { | |
893 | request->range = httpHeaderGetRange(req_hdr); | |
894 | if (request->range) | |
92695e5e | 895 | request->flags.range = 1; |
4b315324 | 896 | } |
99edd1c3 | 897 | if (httpHeaderHas(req_hdr, HDR_AUTHORIZATION)) |
92695e5e | 898 | request->flags.auth = 1; |
7a2f978b | 899 | if (request->login[0] != '\0') |
92695e5e | 900 | request->flags.auth = 1; |
99edd1c3 | 901 | if (httpHeaderHas(req_hdr, HDR_VIA)) { |
902 | String s = httpHeaderGetList(req_hdr, HDR_VIA); | |
38a6c74e | 903 | /* |
904 | * ThisCache cannot be a member of Via header, "1.0 ThisCache" can. | |
905 | * Note ThisCache2 has a space prepended to the hostname so we don't | |
906 | * accidentally match super-domains. | |
907 | */ | |
908 | if (strListIsSubstr(&s, ThisCache2, ',')) { | |
c68e9c6b | 909 | debugObj(33, 1, "WARNING: Forwarding loop detected for:\n", |
910 | request, (ObjPackMethod) & httpRequestPack); | |
92695e5e | 911 | request->flags.loopdetect = 1; |
7a2f978b | 912 | } |
d21f1c54 | 913 | #if FORW_VIA_DB |
ea285003 | 914 | fvdbCountVia(strBuf(s)); |
d21f1c54 | 915 | #endif |
99edd1c3 | 916 | stringClean(&s); |
d21f1c54 | 917 | } |
7a2f978b | 918 | #if USE_USERAGENT_LOG |
99edd1c3 | 919 | if ((str = httpHeaderGetStr(req_hdr, HDR_USER_AGENT))) |
920 | logUserAgent(fqdnFromAddr(http->conn->peer.sin_addr), str); | |
d21f1c54 | 921 | #endif |
fd2c5549 | 922 | #if USE_REFERER_LOG |
923 | if ((str = httpHeaderGetStr(req_hdr, HDR_REFERER))) | |
924 | logReferer(fqdnFromAddr(http->conn->peer.sin_addr), str, | |
925 | http->log_uri); | |
926 | #endif | |
d21f1c54 | 927 | #if FORW_VIA_DB |
99edd1c3 | 928 | if (httpHeaderHas(req_hdr, HDR_X_FORWARDED_FOR)) { |
929 | String s = httpHeaderGetList(req_hdr, HDR_X_FORWARDED_FOR); | |
930 | fvdbCountForw(strBuf(s)); | |
931 | stringClean(&s); | |
932 | } | |
7a2f978b | 933 | #endif |
7a2f978b | 934 | if (request->method == METHOD_TRACE) { |
99edd1c3 | 935 | request->max_forwards = httpHeaderGetInt(req_hdr, HDR_MAX_FORWARDS); |
7a2f978b | 936 | } |
50ddd7a4 | 937 | if (clientCachable(http)) |
92695e5e | 938 | request->flags.cachable = 1; |
50ddd7a4 | 939 | if (clientHierarchical(http)) |
92695e5e | 940 | request->flags.hierarchical = 1; |
99edd1c3 | 941 | debug(33, 5) ("clientInterpretRequestHeaders: REQ_NOCACHE = %s\n", |
92695e5e | 942 | request->flags.nocache ? "SET" : "NOT SET"); |
99edd1c3 | 943 | debug(33, 5) ("clientInterpretRequestHeaders: REQ_CACHABLE = %s\n", |
92695e5e | 944 | request->flags.cachable ? "SET" : "NOT SET"); |
99edd1c3 | 945 | debug(33, 5) ("clientInterpretRequestHeaders: REQ_HIERARCHICAL = %s\n", |
92695e5e | 946 | request->flags.hierarchical ? "SET" : "NOT SET"); |
7a2f978b | 947 | } |
948 | ||
c68e9c6b | 949 | /* |
950 | * clientSetKeepaliveFlag() sets request->flags.proxy_keepalive. | |
951 | * This is the client-side persistent connection flag. We need | |
952 | * to set this relatively early in the request processing | |
953 | * to handle hacks for broken servers and clients. | |
954 | */ | |
955 | static void | |
956 | clientSetKeepaliveFlag(clientHttpRequest * http) | |
957 | { | |
958 | request_t *request = http->request; | |
959 | const HttpHeader *req_hdr = &request->header; | |
ccf44862 | 960 | debug(33, 3) ("clientSetKeepaliveFlag: http_ver = %d.%d\n", |
961 | request->http_ver.major, request->http_ver.minor); | |
c68e9c6b | 962 | debug(33, 3) ("clientSetKeepaliveFlag: method = %s\n", |
963 | RequestMethodStr[request->method]); | |
efd900cb | 964 | if (!Config.onoff.client_pconns) |
965 | request->flags.proxy_keepalive = 0; | |
966 | else if (httpMsgIsPersistent(request->http_ver, req_hdr)) | |
c68e9c6b | 967 | request->flags.proxy_keepalive = 1; |
c68e9c6b | 968 | } |
969 | ||
31be8b80 | 970 | static int |
efb9218c | 971 | clientCheckContentLength(request_t * r) |
31be8b80 | 972 | { |
ffc128c4 | 973 | switch (r->method) { |
974 | case METHOD_PUT: | |
975 | case METHOD_POST: | |
976 | /* PUT/POST requires a request entity */ | |
2a6b906c | 977 | return (r->content_length >= 0); |
ffc128c4 | 978 | case METHOD_GET: |
979 | case METHOD_HEAD: | |
980 | /* We do not want to see a request entity on GET/HEAD requests */ | |
2a6b906c | 981 | return (r->content_length <= 0); |
ffc128c4 | 982 | default: |
983 | /* For other types of requests we don't care */ | |
0cdcddb9 | 984 | return 1; |
ffc128c4 | 985 | } |
986 | /* NOT REACHED */ | |
31be8b80 | 987 | } |
988 | ||
7a2f978b | 989 | static int |
50ddd7a4 | 990 | clientCachable(clientHttpRequest * http) |
7a2f978b | 991 | { |
23d92c64 | 992 | const char *url = http->uri; |
7a2f978b | 993 | request_t *req = http->request; |
994 | method_t method = req->method; | |
7a2f978b | 995 | if (req->protocol == PROTO_HTTP) |
996 | return httpCachable(method); | |
997 | /* FTP is always cachable */ | |
7a2f978b | 998 | if (req->protocol == PROTO_WAIS) |
999 | return 0; | |
1000 | if (method == METHOD_CONNECT) | |
1001 | return 0; | |
1002 | if (method == METHOD_TRACE) | |
1003 | return 0; | |
94439e4e | 1004 | if (method == METHOD_PUT) |
1005 | return 0; | |
1006 | if (method == METHOD_POST) | |
1007 | return 0; /* XXX POST may be cached sometimes.. ignored for now */ | |
1008 | if (req->protocol == PROTO_GOPHER) | |
1009 | return gopherCachable(url); | |
7a2f978b | 1010 | if (req->protocol == PROTO_CACHEOBJ) |
1011 | return 0; | |
1012 | return 1; | |
1013 | } | |
1014 | ||
1015 | /* Return true if we can query our neighbors for this object */ | |
1016 | static int | |
50ddd7a4 | 1017 | clientHierarchical(clientHttpRequest * http) |
7a2f978b | 1018 | { |
23d92c64 | 1019 | const char *url = http->uri; |
7a2f978b | 1020 | request_t *request = http->request; |
1021 | method_t method = request->method; | |
1022 | const wordlist *p = NULL; | |
1023 | ||
1024 | /* IMS needs a private key, so we can use the hierarchy for IMS only | |
1025 | * if our neighbors support private keys */ | |
92695e5e | 1026 | if (request->flags.ims && !neighbors_do_private_keys) |
7a2f978b | 1027 | return 0; |
92695e5e | 1028 | if (request->flags.auth) |
7a2f978b | 1029 | return 0; |
1030 | if (method == METHOD_TRACE) | |
1031 | return 1; | |
1032 | if (method != METHOD_GET) | |
1033 | return 0; | |
1034 | /* scan hierarchy_stoplist */ | |
1035 | for (p = Config.hierarchy_stoplist; p; p = p->next) | |
1036 | if (strstr(url, p->key)) | |
1037 | return 0; | |
92695e5e | 1038 | if (request->flags.loopdetect) |
7a2f978b | 1039 | return 0; |
1040 | if (request->protocol == PROTO_HTTP) | |
1041 | return httpCachable(method); | |
1042 | if (request->protocol == PROTO_GOPHER) | |
1043 | return gopherCachable(url); | |
1044 | if (request->protocol == PROTO_WAIS) | |
1045 | return 0; | |
1046 | if (request->protocol == PROTO_CACHEOBJ) | |
1047 | return 0; | |
1048 | return 1; | |
1049 | } | |
1050 | ||
cf50a0af | 1051 | int |
7a2f978b | 1052 | isTcpHit(log_type code) |
1053 | { | |
1054 | /* this should be a bitmap for better optimization */ | |
1055 | if (code == LOG_TCP_HIT) | |
1056 | return 1; | |
1057 | if (code == LOG_TCP_IMS_HIT) | |
1058 | return 1; | |
1059 | if (code == LOG_TCP_REFRESH_FAIL_HIT) | |
1060 | return 1; | |
1061 | if (code == LOG_TCP_REFRESH_HIT) | |
1062 | return 1; | |
1063 | if (code == LOG_TCP_NEGATIVE_HIT) | |
1064 | return 1; | |
1065 | if (code == LOG_TCP_MEM_HIT) | |
1066 | return 1; | |
b540e168 | 1067 | if (code == LOG_TCP_OFFLINE_HIT) |
1068 | return 1; | |
7a2f978b | 1069 | return 0; |
1070 | } | |
1071 | ||
1c3e77cd | 1072 | /* |
1073 | * returns true if If-Range specs match reply, false otherwise | |
1074 | */ | |
a9771e51 | 1075 | static int |
1076 | clientIfRangeMatch(clientHttpRequest * http, HttpReply * rep) | |
1077 | { | |
1078 | const TimeOrTag spec = httpHeaderGetTimeOrTag(&http->request->header, HDR_IF_RANGE); | |
1079 | /* check for parsing falure */ | |
1080 | if (!spec.valid) | |
1081 | return 0; | |
1082 | /* got an ETag? */ | |
1083 | if (spec.tag.str) { | |
1084 | ETag rep_tag = httpHeaderGetETag(&rep->header, HDR_ETAG); | |
ebb6e9a0 | 1085 | debug(33, 3) ("clientIfRangeMatch: ETags: %s and %s\n", |
a9771e51 | 1086 | spec.tag.str, rep_tag.str ? rep_tag.str : "<none>"); |
1087 | if (!rep_tag.str) | |
ebb6e9a0 | 1088 | return 0; /* entity has no etag to compare with! */ |
a9771e51 | 1089 | if (spec.tag.weak || rep_tag.weak) { |
9834a631 | 1090 | debug(33, 1) ("clientIfRangeMatch: Weak ETags are not allowed in If-Range: %s ? %s\n", |
a9771e51 | 1091 | spec.tag.str, rep_tag.str); |
ebb6e9a0 | 1092 | return 0; /* must use strong validator for sub-range requests */ |
a9771e51 | 1093 | } |
1094 | return etagIsEqual(&rep_tag, &spec.tag); | |
1095 | } | |
1096 | /* got modification time? */ | |
1097 | if (spec.time >= 0) { | |
1098 | return http->entry->lastmod <= spec.time; | |
1099 | } | |
ebb6e9a0 | 1100 | assert(0); /* should not happen */ |
a9771e51 | 1101 | return 0; |
1102 | } | |
1103 | ||
71540aeb | 1104 | /* returns expected content length for multi-range replies |
1105 | * note: assumes that httpHdrRangeCanonize has already been called | |
1106 | * warning: assumes that HTTP headers for individual ranges at the | |
1107 | * time of the actuall assembly will be exactly the same as | |
1108 | * the headers when clientMRangeCLen() is called */ | |
1109 | static int | |
f6308664 | 1110 | clientMRangeCLen(clientHttpRequest * http) |
1111 | { | |
71540aeb | 1112 | int clen = 0; |
1113 | HttpHdrRangePos pos = HttpHdrRangeInitPos; | |
1114 | const HttpHdrRangeSpec *spec; | |
1115 | MemBuf mb; | |
1116 | ||
1117 | assert(http->entry->mem_obj); | |
1118 | ||
1119 | memBufDefInit(&mb); | |
1120 | while ((spec = httpHdrRangeGetSpec(http->request->range, &pos))) { | |
1121 | ||
1122 | /* account for headers for this range */ | |
1123 | memBufReset(&mb); | |
1124 | clientPackRangeHdr(http->entry->mem_obj->reply, | |
1125 | spec, http->range_iter.boundary, &mb); | |
1126 | clen += mb.size; | |
1127 | ||
1128 | /* account for range content */ | |
1129 | clen += spec->length; | |
1130 | ||
1131 | debug(33, 6) ("clientMRangeCLen: (clen += %d + %d) == %d\n", | |
1132 | mb.size, spec->length, clen); | |
1133 | } | |
1134 | /* account for the terminating boundary */ | |
1135 | memBufReset(&mb); | |
1136 | clientPackTermBound(http->range_iter.boundary, &mb); | |
1137 | clen += mb.size; | |
1138 | ||
1139 | memBufClean(&mb); | |
1140 | return clen; | |
1141 | } | |
1142 | ||
e17d81d3 | 1143 | /* adds appropriate Range headers if needed */ |
1144 | static void | |
1145 | clientBuildRangeHeader(clientHttpRequest * http, HttpReply * rep) | |
1146 | { | |
5e2dba16 | 1147 | HttpHeader *hdr = rep ? &rep->header : 0; |
e17d81d3 | 1148 | const char *range_err = NULL; |
288c06ce | 1149 | request_t *request = http->request; |
288c06ce | 1150 | assert(request->range); |
e17d81d3 | 1151 | /* check if we still want to do ranges */ |
9834a631 | 1152 | if (!rep) |
1153 | range_err = "no [parse-able] reply"; | |
1154 | else if (rep->sline.status != HTTP_OK) | |
e17d81d3 | 1155 | range_err = "wrong status code"; |
ebb6e9a0 | 1156 | else if (httpHeaderHas(hdr, HDR_CONTENT_RANGE)) |
e17d81d3 | 1157 | range_err = "origin server does ranges"; |
ebb6e9a0 | 1158 | else if (rep->content_length < 0) |
e17d81d3 | 1159 | range_err = "unknown length"; |
ebb6e9a0 | 1160 | else if (rep->content_length != http->entry->mem_obj->reply->content_length) |
1161 | range_err = "INCONSISTENT length"; /* a bug? */ | |
1162 | else if (httpHeaderHas(&http->request->header, HDR_IF_RANGE) && !clientIfRangeMatch(http, rep)) | |
a9771e51 | 1163 | range_err = "If-Range match failed"; |
ebb6e9a0 | 1164 | else if (!httpHdrRangeCanonize(http->request->range, rep->content_length)) |
e17d81d3 | 1165 | range_err = "canonization failed"; |
ebb6e9a0 | 1166 | else if (httpHdrRangeIsComplex(http->request->range)) |
e17d81d3 | 1167 | range_err = "too complex range header"; |
a4b8110e | 1168 | else if (!request->flags.cachable) /* from we_do_ranges in http.c */ |
288c06ce | 1169 | range_err = "non-cachable request"; |
e17d81d3 | 1170 | /* get rid of our range specs on error */ |
1171 | if (range_err) { | |
badd8ff0 | 1172 | debug(33, 3) ("clientBuildRangeHeader: will not do ranges: %s.\n", range_err); |
e17d81d3 | 1173 | httpHdrRangeDestroy(http->request->range); |
1174 | http->request->range = NULL; | |
1175 | } else { | |
1176 | const int spec_count = http->request->range->specs.count; | |
71540aeb | 1177 | int actual_clen = -1; |
1178 | ||
badd8ff0 | 1179 | debug(33, 3) ("clientBuildRangeHeader: range spec count: %d virgin clen: %d\n", |
e17d81d3 | 1180 | spec_count, rep->content_length); |
1181 | assert(spec_count > 0); | |
a9771e51 | 1182 | /* ETags should not be returned with Partial Content replies? */ |
1183 | httpHeaderDelById(hdr, HDR_ETAG); | |
ebb6e9a0 | 1184 | /* append appropriate header(s) */ |
e17d81d3 | 1185 | if (spec_count == 1) { |
1186 | HttpHdrRangePos pos = HttpHdrRangeInitPos; | |
889b534a | 1187 | const HttpHdrRangeSpec *spec = httpHdrRangeGetSpec(http->request->range, &pos); |
1188 | assert(spec); | |
e17d81d3 | 1189 | /* append Content-Range */ |
889b534a | 1190 | httpHeaderAddContRange(hdr, *spec, rep->content_length); |
71540aeb | 1191 | /* set new Content-Length to the actual number of bytes |
e17d81d3 | 1192 | * transmitted in the message-body */ |
71540aeb | 1193 | actual_clen = spec->length; |
e17d81d3 | 1194 | } else { |
1195 | /* multipart! */ | |
1196 | /* generate boundary string */ | |
1197 | http->range_iter.boundary = httpHdrRangeBoundaryStr(http); | |
1198 | /* delete old Content-Type, add ours */ | |
1199 | httpHeaderDelById(hdr, HDR_CONTENT_TYPE); | |
1200 | httpHeaderPutStrf(hdr, HDR_CONTENT_TYPE, | |
1201 | "multipart/byteranges; boundary=\"%s\"", | |
1202 | strBuf(http->range_iter.boundary)); | |
71540aeb | 1203 | /* Content-Length is not required in multipart responses |
1204 | * but it is always nice to have one */ | |
1205 | actual_clen = clientMRangeCLen(http); | |
e17d81d3 | 1206 | } |
71540aeb | 1207 | |
1208 | /* replace Content-Length header */ | |
1209 | assert(actual_clen >= 0); | |
1210 | httpHeaderDelById(hdr, HDR_CONTENT_LENGTH); | |
1211 | httpHeaderPutInt(hdr, HDR_CONTENT_LENGTH, actual_clen); | |
badd8ff0 | 1212 | debug(33, 3) ("clientBuildRangeHeader: actual content length: %d\n", actual_clen); |
e17d81d3 | 1213 | } |
1214 | } | |
1215 | ||
35282fbf | 1216 | /* |
1217 | * filters out unwanted entries from original reply header | |
d192d11f | 1218 | * adds extra entries if we have more info than origin server |
35282fbf | 1219 | * adds Squid specific entries |
1220 | */ | |
2246b732 | 1221 | static void |
eeb423fb | 1222 | clientBuildReplyHeader(clientHttpRequest * http, HttpReply * rep) |
2246b732 | 1223 | { |
1224 | HttpHeader *hdr = &rep->header; | |
1225 | int is_hit = isTcpHit(http->log_type); | |
7673173d | 1226 | request_t *request = http->request; |
2246b732 | 1227 | #if DONT_FILTER_THESE |
1228 | /* but you might want to if you run Squid as an HTTP accelerator */ | |
d192d11f | 1229 | /* httpHeaderDelById(hdr, HDR_ACCEPT_RANGES); */ |
2246b732 | 1230 | httpHeaderDelById(hdr, HDR_ETAG); |
1231 | #endif | |
1232 | httpHeaderDelById(hdr, HDR_PROXY_CONNECTION); | |
1233 | /* here: Keep-Alive is a field-name, not a connection directive! */ | |
1234 | httpHeaderDelByName(hdr, "Keep-Alive"); | |
1235 | /* remove Set-Cookie if a hit */ | |
1236 | if (is_hit) | |
1237 | httpHeaderDelById(hdr, HDR_SET_COOKIE); | |
1238 | /* handle Connection header */ | |
1239 | if (httpHeaderHas(hdr, HDR_CONNECTION)) { | |
1240 | /* anything that matches Connection list member will be deleted */ | |
1241 | String strConnection = httpHeaderGetList(hdr, HDR_CONNECTION); | |
1242 | const HttpHeaderEntry *e; | |
1243 | HttpHeaderPos pos = HttpHeaderInitPos; | |
7673173d | 1244 | /* |
1245 | * think: on-average-best nesting of the two loops (hdrEntry | |
1246 | * and strListItem) @?@ | |
1247 | */ | |
1248 | /* | |
1249 | * maybe we should delete standard stuff ("keep-alive","close") | |
1250 | * from strConnection first? | |
1251 | */ | |
2246b732 | 1252 | while ((e = httpHeaderGetEntry(hdr, &pos))) { |
1253 | if (strListIsMember(&strConnection, strBuf(e->name), ',')) | |
1254 | httpHeaderDelAt(hdr, pos); | |
1255 | } | |
1256 | httpHeaderDelById(hdr, HDR_CONNECTION); | |
1257 | stringClean(&strConnection); | |
1258 | } | |
d192d11f | 1259 | /* Handle Ranges */ |
7673173d | 1260 | if (request->range) |
e17d81d3 | 1261 | clientBuildRangeHeader(http, rep); |
7673173d | 1262 | /* |
efd900cb | 1263 | * Add a estimated Age header on cache hits. |
7673173d | 1264 | */ |
efd900cb | 1265 | if (is_hit) { |
1266 | /* | |
1267 | * Remove any existing Age header sent by upstream caches | |
1268 | * (note that the existing header is passed along unmodified | |
1269 | * on cache misses) | |
1270 | */ | |
cc66f616 | 1271 | httpHeaderDelById(hdr, HDR_AGE); |
7673173d | 1272 | /* |
efd900cb | 1273 | * This adds the calculated object age. Note that the details of the |
1274 | * age calculation is performed by adjusting the timestamp in | |
1275 | * storeTimestampsSet(), not here. | |
1276 | * | |
1277 | * BROWSER WORKAROUND: IE sometimes hangs when receiving a 0 Age | |
1278 | * header, so don't use it unless there is a age to report. Please | |
1279 | * note that Age is only used to make a conservative estimation of | |
1280 | * the objects age, so a Age: 0 header does not add any useful | |
1281 | * information to the reply in any case. | |
7673173d | 1282 | */ |
d20b1cd0 | 1283 | if (http->entry->timestamp > -1) |
1284 | if (http->entry->timestamp < squid_curtime) | |
1285 | httpHeaderPutInt(hdr, HDR_AGE, | |
1286 | squid_curtime - http->entry->timestamp); | |
cc66f616 | 1287 | } |
94439e4e | 1288 | /* Handle authentication headers */ |
1289 | if (request->auth_user_request) | |
1290 | authenticateFixHeader(rep, request->auth_user_request, request, http->flags.accel); | |
2246b732 | 1291 | /* Append X-Cache */ |
1292 | httpHeaderPutStrf(hdr, HDR_X_CACHE, "%s from %s", | |
1293 | is_hit ? "HIT" : "MISS", getMyHostname()); | |
1294 | #if USE_CACHE_DIGESTS | |
1295 | /* Append X-Cache-Lookup: -- temporary hack, to be removed @?@ @?@ */ | |
1296 | httpHeaderPutStrf(hdr, HDR_X_CACHE_LOOKUP, "%s from %s:%d", | |
1297 | http->lookup_type ? http->lookup_type : "NONE", | |
7e3ce7b9 | 1298 | getMyHostname(), ntohs(Config.Sockaddr.http->s.sin_port)); |
2246b732 | 1299 | #endif |
9bc73deb | 1300 | if (httpReplyBodySize(request->method, rep) < 0) { |
2d5a59cd | 1301 | debug(33, 3) ("clientBuildReplyHeader: can't keep-alive, unknown body size\n"); |
35282fbf | 1302 | request->flags.proxy_keepalive = 0; |
1303 | } | |
2246b732 | 1304 | /* Signal keep-alive if needed */ |
7673173d | 1305 | httpHeaderPutStr(hdr, |
1306 | http->flags.accel ? HDR_CONNECTION : HDR_PROXY_CONNECTION, | |
92695e5e | 1307 | request->flags.proxy_keepalive ? "keep-alive" : "close"); |
2246b732 | 1308 | #if ADD_X_REQUEST_URI |
1309 | /* | |
1310 | * Knowing the URI of the request is useful when debugging persistent | |
1311 | * connections in a client; we cannot guarantee the order of http headers, | |
1312 | * but X-Request-URI is likely to be the very last header to ease use from a | |
1313 | * debugger [hdr->entries.count-1]. | |
1314 | */ | |
eeb423fb | 1315 | httpHeaderPutStr(hdr, HDR_X_REQUEST_URI, |
2246b732 | 1316 | http->entry->mem_obj->url ? http->entry->mem_obj->url : http->uri); |
1317 | #endif | |
6bccf575 | 1318 | httpHdrMangleList(hdr, request); |
2246b732 | 1319 | } |
1320 | ||
eeb423fb | 1321 | static HttpReply * |
2246b732 | 1322 | clientBuildReply(clientHttpRequest * http, const char *buf, size_t size) |
1323 | { | |
1324 | HttpReply *rep = httpReplyCreate(); | |
9bc73deb | 1325 | size_t k = headersEnd(buf, size); |
1326 | if (k && httpReplyParse(rep, buf, k)) { | |
2246b732 | 1327 | /* enforce 1.0 reply version */ |
bffee5af | 1328 | httpBuildVersion(&rep->sline.version, 1, 0); |
2246b732 | 1329 | /* do header conversions */ |
1330 | clientBuildReplyHeader(http, rep); | |
d192d11f | 1331 | /* if we do ranges, change status to "Partial Content" */ |
1332 | if (http->request->range) | |
9bc73deb | 1333 | httpStatusLineSet(&rep->sline, rep->sline.version, |
1334 | HTTP_PARTIAL_CONTENT, NULL); | |
2246b732 | 1335 | } else { |
1336 | /* parsing failure, get rid of the invalid reply */ | |
1337 | httpReplyDestroy(rep); | |
1338 | rep = NULL; | |
9834a631 | 1339 | /* if we were going to do ranges, backoff */ |
9bc73deb | 1340 | if (http->request->range) { |
1341 | /* this will fail and destroy request->range */ | |
1342 | clientBuildRangeHeader(http, rep); | |
1343 | } | |
2246b732 | 1344 | } |
1345 | return rep; | |
1346 | } | |
7a2f978b | 1347 | |
85071fe3 | 1348 | /* |
1349 | * clientCacheHit should only be called until the HTTP reply headers | |
1350 | * have been parsed. Normally this should be a single call, but | |
1351 | * it might take more than one. As soon as we have the headers, | |
1352 | * we hand off to clientSendMoreData, clientProcessExpired, or | |
1353 | * clientProcessMiss. | |
1354 | */ | |
4c323c5f | 1355 | static void |
7a2f978b | 1356 | clientCacheHit(void *data, char *buf, ssize_t size) |
1357 | { | |
1358 | clientHttpRequest *http = data; | |
49d3fcb0 | 1359 | StoreEntry *e = http->entry; |
1360 | MemObject *mem; | |
1361 | request_t *r = http->request; | |
93f9abd0 | 1362 | debug(33, 3) ("clientCacheHit: %s, %d bytes\n", http->uri, (int) size); |
49d3fcb0 | 1363 | if (http->entry == NULL) { |
db1cd23c | 1364 | memFree(buf, MEM_CLIENT_SOCK_BUF); |
93f9abd0 | 1365 | debug(33, 3) ("clientCacheHit: request aborted\n"); |
49d3fcb0 | 1366 | return; |
1367 | } else if (size < 0) { | |
7a2f978b | 1368 | /* swap in failure */ |
db1cd23c | 1369 | memFree(buf, MEM_CLIENT_SOCK_BUF); |
93f9abd0 | 1370 | debug(33, 3) ("clientCacheHit: swapin failure for %s\n", http->uri); |
7a2f978b | 1371 | http->log_type = LOG_TCP_SWAPFAIL_MISS; |
fdfc0d63 | 1372 | if ((e = http->entry)) { |
1373 | http->entry = NULL; | |
06d2839d | 1374 | storeUnregister(http->sc, e, http); |
e1dcf02d | 1375 | http->sc = NULL; |
fdfc0d63 | 1376 | storeUnlockObject(e); |
1377 | } | |
fb63215a | 1378 | clientProcessMiss(http); |
49d3fcb0 | 1379 | return; |
1380 | } | |
1381 | assert(size > 0); | |
1382 | mem = e->mem_obj; | |
b7fe0ab0 | 1383 | assert(!EBIT_TEST(e->flags, ENTRY_ABORTED)); |
49d3fcb0 | 1384 | if (mem->reply->sline.status == 0) { |
1385 | /* | |
1386 | * we don't have full reply headers yet; either wait for more or | |
1387 | * punt to clientProcessMiss. | |
1388 | */ | |
25944e56 | 1389 | if (e->mem_status == IN_MEMORY || e->store_status == STORE_OK) { |
db1cd23c | 1390 | memFree(buf, MEM_CLIENT_SOCK_BUF); |
49d3fcb0 | 1391 | clientProcessMiss(http); |
cc27d775 | 1392 | } else if (size == CLIENT_SOCK_SZ && http->out.offset == 0) { |
db1cd23c | 1393 | memFree(buf, MEM_CLIENT_SOCK_BUF); |
49d3fcb0 | 1394 | clientProcessMiss(http); |
1395 | } else { | |
1396 | debug(33, 3) ("clientCacheHit: waiting for HTTP reply headers\n"); | |
06d2839d | 1397 | storeClientCopy(http->sc, e, |
49d3fcb0 | 1398 | http->out.offset + size, |
1399 | http->out.offset, | |
cc27d775 | 1400 | CLIENT_SOCK_SZ, |
49d3fcb0 | 1401 | buf, |
1402 | clientCacheHit, | |
1403 | http); | |
1404 | } | |
1405 | return; | |
1406 | } | |
1407 | /* | |
1408 | * Got the headers, now grok them | |
1409 | */ | |
1410 | assert(http->log_type == LOG_TCP_HIT); | |
1411 | if (checkNegativeHit(e)) { | |
1412 | http->log_type = LOG_TCP_NEGATIVE_HIT; | |
1413 | clientSendMoreData(data, buf, size); | |
d657ffad | 1414 | } else if (r->method == METHOD_HEAD) { |
1415 | /* | |
1416 | * RFC 2068 seems to indicate there is no "conditional HEAD" | |
1417 | * request. We cannot validate a cached object for a HEAD | |
1418 | * request, nor can we return 304. | |
1419 | */ | |
1420 | if (e->mem_status == IN_MEMORY) | |
1421 | http->log_type = LOG_TCP_MEM_HIT; | |
1422 | clientSendMoreData(data, buf, size); | |
829a9357 | 1423 | } else if (refreshCheckHTTP(e, r) && !http->flags.internal) { |
5dd13cf3 | 1424 | debug(33, 5) ("clientCacheHit: in refreshCheck() block\n"); |
49d3fcb0 | 1425 | /* |
1426 | * We hold a stale copy; it needs to be validated | |
1427 | */ | |
9689d97c | 1428 | /* |
1429 | * The 'need_validation' flag is used to prevent forwarding | |
1430 | * loops between siblings. If our copy of the object is stale, | |
1431 | * then we should probably only use parents for the validation | |
1432 | * request. Otherwise two siblings could generate a loop if | |
1433 | * both have a stale version of the object. | |
1434 | */ | |
1435 | r->flags.need_validation = 1; | |
0cdcddb9 | 1436 | if (e->lastmod < 0) { |
1437 | /* | |
1c3e77cd | 1438 | * Previous reply didn't have a Last-Modified header, |
1439 | * we cannot revalidate it. | |
1440 | */ | |
1441 | http->log_type = LOG_TCP_MISS; | |
1442 | clientProcessMiss(http); | |
92695e5e | 1443 | } else if (r->flags.nocache) { |
cbe3a719 | 1444 | /* |
1445 | * This did not match a refresh pattern that overrides no-cache | |
1446 | * we should honour the client no-cache header. | |
1447 | */ | |
1448 | http->log_type = LOG_TCP_CLIENT_REFRESH_MISS; | |
1449 | clientProcessMiss(http); | |
1c3e77cd | 1450 | } else if (r->protocol == PROTO_HTTP) { |
cbe3a719 | 1451 | /* |
1452 | * Object needs to be revalidated | |
1453 | * XXX This could apply to FTP as well, if Last-Modified is known. | |
1454 | */ | |
49d3fcb0 | 1455 | http->log_type = LOG_TCP_REFRESH_MISS; |
1456 | clientProcessExpired(http); | |
1457 | } else { | |
cbe3a719 | 1458 | /* |
1459 | * We don't know how to re-validate other protocols. Handle | |
1460 | * them as if the object has expired. | |
1461 | */ | |
49d3fcb0 | 1462 | http->log_type = LOG_TCP_MISS; |
1463 | clientProcessMiss(http); | |
1464 | } | |
db1cd23c | 1465 | memFree(buf, MEM_CLIENT_SOCK_BUF); |
92695e5e | 1466 | } else if (r->flags.ims) { |
49d3fcb0 | 1467 | /* |
1468 | * Handle If-Modified-Since requests from the client | |
1469 | */ | |
1470 | if (mem->reply->sline.status != HTTP_OK) { | |
1471 | debug(33, 4) ("clientCacheHit: Reply code %d != 200\n", | |
1472 | mem->reply->sline.status); | |
db1cd23c | 1473 | memFree(buf, MEM_CLIENT_SOCK_BUF); |
1ecaa0a0 | 1474 | http->log_type = LOG_TCP_MISS; |
49d3fcb0 | 1475 | clientProcessMiss(http); |
1476 | } else if (modifiedSince(e, http->request)) { | |
815ef411 | 1477 | http->log_type = LOG_TCP_IMS_HIT; |
49d3fcb0 | 1478 | clientSendMoreData(data, buf, size); |
1479 | } else { | |
d20b1cd0 | 1480 | time_t timestamp = e->timestamp; |
49d3fcb0 | 1481 | MemBuf mb = httpPacked304Reply(e->mem_obj->reply); |
1482 | http->log_type = LOG_TCP_IMS_HIT; | |
db1cd23c | 1483 | memFree(buf, MEM_CLIENT_SOCK_BUF); |
06d2839d | 1484 | storeUnregister(http->sc, e, http); |
e1dcf02d | 1485 | http->sc = NULL; |
49d3fcb0 | 1486 | storeUnlockObject(e); |
92695e5e | 1487 | e = clientCreateStoreEntry(http, http->request->method, null_request_flags); |
d20b1cd0 | 1488 | /* |
1489 | * Copy timestamp from the original entry so the 304 | |
1490 | * reply has a meaningful Age: header. | |
1491 | */ | |
1492 | e->timestamp = timestamp; | |
49d3fcb0 | 1493 | http->entry = e; |
9bc73deb | 1494 | httpReplyParse(e->mem_obj->reply, mb.buf, mb.size); |
49d3fcb0 | 1495 | storeAppend(e, mb.buf, mb.size); |
1496 | memBufClean(&mb); | |
1497 | storeComplete(e); | |
1498 | } | |
1499 | } else { | |
1500 | /* | |
1501 | * plain ol' cache hit | |
1502 | */ | |
1503 | if (e->mem_status == IN_MEMORY) | |
1504 | http->log_type = LOG_TCP_MEM_HIT; | |
b540e168 | 1505 | else if (Config.onoff.offline) |
1506 | http->log_type = LOG_TCP_OFFLINE_HIT; | |
49d3fcb0 | 1507 | clientSendMoreData(data, buf, size); |
7a2f978b | 1508 | } |
1509 | } | |
1510 | ||
71540aeb | 1511 | /* put terminating boundary for multiparts */ |
1512 | static void | |
f6308664 | 1513 | clientPackTermBound(String boundary, MemBuf * mb) |
71540aeb | 1514 | { |
1515 | memBufPrintf(mb, "\r\n--%s--\r\n", strBuf(boundary)); | |
1516 | debug(33, 6) ("clientPackTermBound: buf offset: %d\n", mb->size); | |
1517 | } | |
d192d11f | 1518 | |
aa42ceac | 1519 | /* appends a "part" HTTP header (as in a multi-part/range reply) to the buffer */ |
1520 | static void | |
f6308664 | 1521 | clientPackRangeHdr(const HttpReply * rep, const HttpHdrRangeSpec * spec, String boundary, MemBuf * mb) |
aa42ceac | 1522 | { |
1523 | HttpHeader hdr; | |
1524 | Packer p; | |
1525 | assert(rep); | |
1526 | assert(spec); | |
1527 | ||
1528 | /* put boundary */ | |
1529 | debug(33, 5) ("clientPackRangeHdr: appending boundary: %s\n", strBuf(boundary)); | |
aa42ceac | 1530 | /* rfc2046 requires to _prepend_ boundary with <crlf>! */ |
1531 | memBufPrintf(mb, "\r\n--%s\r\n", strBuf(boundary)); | |
1532 | ||
1533 | /* stuff the header with required entries and pack it */ | |
1534 | httpHeaderInit(&hdr, hoReply); | |
1535 | if (httpHeaderHas(&rep->header, HDR_CONTENT_TYPE)) | |
f6308664 | 1536 | httpHeaderPutStr(&hdr, HDR_CONTENT_TYPE, httpHeaderGetStr(&rep->header, HDR_CONTENT_TYPE)); |
aa42ceac | 1537 | httpHeaderAddContRange(&hdr, *spec, rep->content_length); |
1538 | packerToMemInit(&p, mb); | |
1539 | httpHeaderPackInto(&hdr, &p); | |
1540 | packerClean(&p); | |
1541 | httpHeaderClean(&hdr); | |
1542 | ||
71540aeb | 1543 | /* append <crlf> (we packed a header, not a reply) */ |
aa42ceac | 1544 | memBufPrintf(mb, crlf); |
1545 | } | |
1546 | ||
9bc73deb | 1547 | /* |
1548 | * extracts a "range" from *buf and appends them to mb, updating | |
1549 | * all offsets and such. | |
1550 | */ | |
d192d11f | 1551 | static void |
9bc73deb | 1552 | clientPackRange(clientHttpRequest * http, |
1553 | HttpHdrRangeIter * i, | |
1554 | const char **buf, | |
1555 | ssize_t * size, | |
1556 | MemBuf * mb) | |
d192d11f | 1557 | { |
9bc73deb | 1558 | const ssize_t copy_sz = i->debt_size <= *size ? i->debt_size : *size; |
d192d11f | 1559 | off_t body_off = http->out.offset - i->prefix_size; |
1560 | assert(*size > 0); | |
889b534a | 1561 | assert(i->spec); |
9bc73deb | 1562 | /* |
1563 | * intersection of "have" and "need" ranges must not be empty | |
1564 | */ | |
889b534a | 1565 | assert(body_off < i->spec->offset + i->spec->length); |
1566 | assert(body_off + *size > i->spec->offset); | |
9bc73deb | 1567 | /* |
1568 | * put boundary and headers at the beginning of a range in a | |
1569 | * multi-range | |
1570 | */ | |
889b534a | 1571 | if (http->request->range->specs.count > 1 && i->debt_size == i->spec->length) { |
aa42ceac | 1572 | assert(http->entry->mem_obj); |
1573 | clientPackRangeHdr( | |
f6308664 | 1574 | http->entry->mem_obj->reply, /* original reply */ |
1575 | i->spec, /* current range */ | |
1576 | i->boundary, /* boundary, the same for all */ | |
aa42ceac | 1577 | mb |
f6308664 | 1578 | ); |
d192d11f | 1579 | } |
9bc73deb | 1580 | /* |
1581 | * append content | |
1582 | */ | |
cdedf7db | 1583 | debug(33, 3) ("clientPackRange: appending %d bytes\n", copy_sz); |
d192d11f | 1584 | memBufAppend(mb, *buf, copy_sz); |
9bc73deb | 1585 | /* |
1586 | * update offsets | |
1587 | */ | |
d192d11f | 1588 | *size -= copy_sz; |
1589 | i->debt_size -= copy_sz; | |
1590 | body_off += copy_sz; | |
1591 | *buf += copy_sz; | |
ebb6e9a0 | 1592 | http->out.offset = body_off + i->prefix_size; /* sync */ |
9bc73deb | 1593 | /* |
1594 | * paranoid check | |
1595 | */ | |
d192d11f | 1596 | assert(*size >= 0 && i->debt_size >= 0); |
1597 | } | |
1598 | ||
889b534a | 1599 | /* returns true if there is still data available to pack more ranges |
1600 | * increments iterator "i" | |
1601 | * used by clientPackMoreRanges */ | |
1602 | static int | |
ebb6e9a0 | 1603 | clientCanPackMoreRanges(const clientHttpRequest * http, HttpHdrRangeIter * i, ssize_t size) |
889b534a | 1604 | { |
1605 | /* first update "i" if needed */ | |
1606 | if (!i->debt_size) { | |
1607 | if ((i->spec = httpHdrRangeGetSpec(http->request->range, &i->pos))) | |
1608 | i->debt_size = i->spec->length; | |
1609 | } | |
ebb6e9a0 | 1610 | assert(!i->debt_size == !i->spec); /* paranoid sync condition */ |
889b534a | 1611 | /* continue condition: need_more_data && have_more_data */ |
1612 | return i->spec && size > 0; | |
1613 | } | |
d192d11f | 1614 | |
1615 | /* extracts "ranges" from buf and appends them to mb, updating all offsets and such */ | |
1616 | /* returns true if we need more data */ | |
1617 | static int | |
ebb6e9a0 | 1618 | clientPackMoreRanges(clientHttpRequest * http, const char *buf, ssize_t size, MemBuf * mb) |
d192d11f | 1619 | { |
1620 | HttpHdrRangeIter *i = &http->range_iter; | |
d192d11f | 1621 | /* offset in range specs does not count the prefix of an http msg */ |
1622 | off_t body_off = http->out.offset - i->prefix_size; | |
1623 | assert(size >= 0); | |
9834a631 | 1624 | /* check: reply was parsed and range iterator was initialized */ |
1625 | assert(i->prefix_size > 0); | |
d192d11f | 1626 | /* filter out data according to range specs */ |
889b534a | 1627 | while (clientCanPackMoreRanges(http, i, size)) { |
ebb6e9a0 | 1628 | off_t start; /* offset of still missing data */ |
889b534a | 1629 | assert(i->spec); |
1630 | start = i->spec->offset + i->spec->length - i->debt_size; | |
badd8ff0 | 1631 | debug(33, 3) ("clientPackMoreRanges: in: offset: %d size: %d\n", |
ebb6e9a0 | 1632 | (int) body_off, size); |
badd8ff0 | 1633 | debug(33, 3) ("clientPackMoreRanges: out: start: %d spec[%d]: [%d, %d), len: %d debt: %d\n", |
ebb6e9a0 | 1634 | (int) start, (int) i->pos, i->spec->offset, (int) (i->spec->offset + i->spec->length), i->spec->length, i->debt_size); |
1635 | assert(body_off <= start); /* we did not miss it */ | |
d192d11f | 1636 | /* skip up to start */ |
1637 | if (body_off + size > start) { | |
1638 | const size_t skip_size = start - body_off; | |
1639 | body_off = start; | |
1640 | size -= skip_size; | |
1641 | buf += skip_size; | |
1642 | } else { | |
1643 | /* has not reached start yet */ | |
1644 | body_off += size; | |
1645 | size = 0; | |
1646 | buf = NULL; | |
1647 | } | |
1648 | /* put next chunk if any */ | |
1649 | if (size) { | |
ebb6e9a0 | 1650 | http->out.offset = body_off + i->prefix_size; /* sync */ |
d192d11f | 1651 | clientPackRange(http, i, &buf, &size, mb); |
ebb6e9a0 | 1652 | body_off = http->out.offset - i->prefix_size; /* sync */ |
d192d11f | 1653 | } |
1654 | } | |
ebb6e9a0 | 1655 | assert(!i->debt_size == !i->spec); /* paranoid sync condition */ |
badd8ff0 | 1656 | debug(33, 3) ("clientPackMoreRanges: buf exhausted: in: offset: %d size: %d need_more: %d\n", |
ebb6e9a0 | 1657 | (int) body_off, size, i->debt_size); |
889b534a | 1658 | if (i->debt_size) { |
badd8ff0 | 1659 | debug(33, 3) ("clientPackMoreRanges: need more: spec[%d]: [%d, %d), len: %d\n", |
ebb6e9a0 | 1660 | (int) i->pos, i->spec->offset, (int) (i->spec->offset + i->spec->length), i->spec->length); |
889b534a | 1661 | /* skip the data we do not need if possible */ |
ebb6e9a0 | 1662 | if (i->debt_size == i->spec->length) /* at the start of the cur. spec */ |
889b534a | 1663 | body_off = i->spec->offset; |
d192d11f | 1664 | else |
889b534a | 1665 | assert(body_off == i->spec->offset + i->spec->length - i->debt_size); |
ebb6e9a0 | 1666 | } else if (http->request->range->specs.count > 1) { |
d192d11f | 1667 | /* put terminating boundary for multiparts */ |
71540aeb | 1668 | clientPackTermBound(i->boundary, mb); |
d192d11f | 1669 | } |
ebb6e9a0 | 1670 | http->out.offset = body_off + i->prefix_size; /* sync */ |
889b534a | 1671 | return i->debt_size > 0; |
d192d11f | 1672 | } |
1673 | ||
0483b991 | 1674 | static int |
1675 | clientReplyBodyTooLarge(int clen) | |
1676 | { | |
1677 | if (0 == Config.maxReplyBodySize) | |
1678 | return 0; /* disabled */ | |
1679 | if (clen < 0) | |
1680 | return 0; /* unknown */ | |
1681 | if (clen > Config.maxReplyBodySize) | |
1682 | return 1; /* too large */ | |
1683 | return 0; | |
1684 | } | |
1685 | ||
efd900cb | 1686 | static int |
1687 | clientRequestBodyTooLarge(int clen) | |
1688 | { | |
1689 | if (0 == Config.maxRequestBodySize) | |
1690 | return 0; /* disabled */ | |
1691 | if (clen < 0) | |
1692 | return 0; /* unknown, bug? */ | |
1693 | if (clen > Config.maxRequestBodySize) | |
1694 | return 1; /* too large */ | |
1695 | return 0; | |
1696 | } | |
1697 | ||
2246b732 | 1698 | /* |
1699 | * accepts chunk of a http message in buf, parses prefix, filters headers and | |
1700 | * such, writes processed message to the client's socket | |
1701 | */ | |
4c323c5f | 1702 | static void |
7a2f978b | 1703 | clientSendMoreData(void *data, char *buf, ssize_t size) |
1704 | { | |
1705 | clientHttpRequest *http = data; | |
1706 | StoreEntry *entry = http->entry; | |
1707 | ConnStateData *conn = http->conn; | |
1708 | int fd = conn->fd; | |
2246b732 | 1709 | HttpReply *rep = NULL; |
2246b732 | 1710 | const char *body_buf = buf; |
1711 | ssize_t body_size = size; | |
9f086470 | 1712 | MemBuf mb; |
bcd3b08a | 1713 | ssize_t check_size = 0; |
93f9abd0 | 1714 | debug(33, 5) ("clientSendMoreData: %s, %d bytes\n", http->uri, (int) size); |
cc27d775 | 1715 | assert(size <= CLIENT_SOCK_SZ); |
40defb17 | 1716 | assert(http->request != NULL); |
0f1bc304 | 1717 | dlinkDelete(&http->active, &ClientActiveRequests); |
1718 | dlinkAdd(http, &http->active, &ClientActiveRequests); | |
93f9abd0 | 1719 | debug(33, 5) ("clientSendMoreData: FD %d '%s', out.offset=%d \n", |
5f6ac48b | 1720 | fd, storeUrl(entry), (int) http->out.offset); |
7a2f978b | 1721 | if (conn->chr != http) { |
1722 | /* there is another object in progress, defer this one */ | |
aebbcd07 | 1723 | debug(33, 1) ("clientSendMoreData: Deferring %s\n", storeUrl(entry)); |
db1cd23c | 1724 | memFree(buf, MEM_CLIENT_SOCK_BUF); |
7a2f978b | 1725 | return; |
b7fe0ab0 | 1726 | } else if (entry && EBIT_TEST(entry->flags, ENTRY_ABORTED)) { |
d6e928c9 | 1727 | /* call clientWriteComplete so the client socket gets closed */ |
1728 | clientWriteComplete(fd, NULL, 0, COMM_OK, http); | |
db1cd23c | 1729 | memFree(buf, MEM_CLIENT_SOCK_BUF); |
7a2f978b | 1730 | return; |
1731 | } else if (size < 0) { | |
d6e928c9 | 1732 | /* call clientWriteComplete so the client socket gets closed */ |
1733 | clientWriteComplete(fd, NULL, 0, COMM_OK, http); | |
db1cd23c | 1734 | memFree(buf, MEM_CLIENT_SOCK_BUF); |
7a2f978b | 1735 | return; |
1736 | } else if (size == 0) { | |
d6e928c9 | 1737 | /* call clientWriteComplete so the client socket gets closed */ |
1738 | clientWriteComplete(fd, NULL, 0, COMM_OK, http); | |
db1cd23c | 1739 | memFree(buf, MEM_CLIENT_SOCK_BUF); |
7a2f978b | 1740 | return; |
1741 | } | |
40defb17 | 1742 | if (http->out.offset == 0) { |
7a2f978b | 1743 | if (Config.onoff.log_mime_hdrs) { |
2334c194 | 1744 | size_t k; |
1745 | if ((k = headersEnd(buf, size))) { | |
7a2f978b | 1746 | safe_free(http->al.headers.reply); |
1afe05c5 | 1747 | http->al.headers.reply = xcalloc(k + 1, 1); |
2334c194 | 1748 | xstrncpy(http->al.headers.reply, buf, k); |
7a2f978b | 1749 | } |
1750 | } | |
2246b732 | 1751 | rep = clientBuildReply(http, buf, size); |
1644d9d8 | 1752 | if (rep && clientReplyBodyTooLarge(rep->content_length)) { |
0483b991 | 1753 | ErrorState *err = errorCon(ERR_TOO_BIG, HTTP_FORBIDDEN); |
1754 | err->request = requestLink(http->request); | |
06d2839d | 1755 | storeUnregister(http->sc, http->entry, http); |
e1dcf02d | 1756 | http->sc = NULL; |
0483b991 | 1757 | storeUnlockObject(http->entry); |
1758 | http->entry = clientCreateStoreEntry(http, http->request->method, | |
1759 | null_request_flags); | |
1760 | errorAppendEntry(http->entry, err); | |
9bc73deb | 1761 | httpReplyDestroy(rep); |
0483b991 | 1762 | return; |
1763 | } else if (rep) { | |
2246b732 | 1764 | body_size = size - rep->hdr_sz; |
1765 | assert(body_size >= 0); | |
1f7e91a1 | 1766 | body_buf = buf + rep->hdr_sz; |
d192d11f | 1767 | http->range_iter.prefix_size = rep->hdr_sz; |
2246b732 | 1768 | debug(33, 3) ("clientSendMoreData: Appending %d bytes after %d bytes of headers\n", |
1769 | body_size, rep->hdr_sz); | |
cc27d775 | 1770 | } else if (size < CLIENT_SOCK_SZ && entry->store_status == STORE_PENDING) { |
9f086470 | 1771 | /* wait for more to arrive */ |
06d2839d | 1772 | storeClientCopy(http->sc, entry, |
9f086470 | 1773 | http->out.offset + size, |
1774 | http->out.offset, | |
cc27d775 | 1775 | CLIENT_SOCK_SZ, |
9f086470 | 1776 | buf, |
1777 | clientSendMoreData, | |
1778 | http); | |
1779 | return; | |
7a2f978b | 1780 | } |
d192d11f | 1781 | /* reset range iterator */ |
1782 | http->range_iter.pos = HttpHdrRangeInitPos; | |
f4f278b5 | 1783 | } else if (!http->request->range) { |
1784 | /* Avoid copying to MemBuf for non-range requests */ | |
1785 | /* Note, if we're here, then 'rep' is known to be NULL */ | |
1786 | http->out.offset += body_size; | |
1787 | comm_write(fd, buf, size, clientWriteBodyComplete, http, NULL); | |
1788 | /* NULL because clientWriteBodyComplete frees it */ | |
1789 | return; | |
7a2f978b | 1790 | } |
7a2f978b | 1791 | if (http->request->method == METHOD_HEAD) { |
9f086470 | 1792 | if (rep) { |
1793 | /* do not forward body for HEAD replies */ | |
1794 | body_size = 0; | |
9f086470 | 1795 | http->flags.done_copying = 1; |
1796 | } else { | |
782b5f40 | 1797 | /* |
1798 | * If we are here, then store_status == STORE_OK and it | |
1799 | * seems we have a HEAD repsponse which is missing the | |
1800 | * empty end-of-headers line (home.mira.net, phttpd/0.99.72 | |
1801 | * does this). Because clientBuildReply() fails we just | |
1802 | * call this reply a body, set the done_copying flag and | |
1803 | * continue... | |
1804 | */ | |
1805 | http->flags.done_copying = 1; | |
7a2f978b | 1806 | } |
1807 | } | |
d192d11f | 1808 | /* write headers and/or body if any */ |
1f7e91a1 | 1809 | assert(rep || (body_buf && body_size)); |
9f086470 | 1810 | /* init mb; put status line and headers if any */ |
1811 | if (rep) { | |
1812 | mb = httpReplyPack(rep); | |
bcd3b08a | 1813 | http->out.offset += rep->hdr_sz; |
1814 | check_size += rep->hdr_sz; | |
c3609322 | 1815 | #if HEADERS_LOG |
1816 | headersLog(0, 0, http->request->method, rep); | |
1817 | #endif | |
5e060348 | 1818 | httpReplyDestroy(rep); |
9f086470 | 1819 | rep = NULL; |
1820 | } else { | |
b8890359 | 1821 | memBufDefInit(&mb); |
9f086470 | 1822 | } |
1823 | /* append body if any */ | |
e42d5181 | 1824 | if (http->request->range) { |
1825 | /* Only GET requests should have ranges */ | |
1826 | assert(http->request->method == METHOD_GET); | |
1827 | /* clientPackMoreRanges() updates http->out.offset */ | |
1828 | /* force the end of the transfer if we are done */ | |
1829 | if (!clientPackMoreRanges(http, body_buf, body_size, &mb)) | |
1830 | http->flags.done_copying = 1; | |
1831 | } else if (body_buf && body_size) { | |
1832 | http->out.offset += body_size; | |
1833 | check_size += body_size; | |
1834 | memBufAppend(&mb, body_buf, body_size); | |
2246b732 | 1835 | } |
bbe3cbdc | 1836 | if (!http->request->range && http->request->method == METHOD_GET) |
bcd3b08a | 1837 | assert(check_size == size); |
9f086470 | 1838 | /* write */ |
1839 | comm_write_mbuf(fd, mb, clientWriteComplete, http); | |
2246b732 | 1840 | /* if we don't do it, who will? */ |
db1cd23c | 1841 | memFree(buf, MEM_CLIENT_SOCK_BUF); |
7a2f978b | 1842 | } |
1843 | ||
f4f278b5 | 1844 | /* |
1845 | * clientWriteBodyComplete is called for MEM_CLIENT_SOCK_BUF's | |
1846 | * written directly to the client socket, versus copying to a MemBuf | |
1847 | * and going through comm_write_mbuf. Most non-range responses after | |
1848 | * the headers probably go through here. | |
1849 | */ | |
1850 | static void | |
1851 | clientWriteBodyComplete(int fd, char *buf, size_t size, int errflag, void *data) | |
1852 | { | |
1853 | /* | |
1854 | * NOTE: clientWriteComplete doesn't currently use its "buf" | |
1855 | * (second) argument, so we pass in NULL. | |
1856 | */ | |
1857 | clientWriteComplete(fd, NULL, size, errflag, data); | |
1858 | memFree(buf, MEM_CLIENT_SOCK_BUF); | |
1859 | } | |
1860 | ||
21f2031d | 1861 | static void |
1a92a1e2 | 1862 | clientKeepaliveNextRequest(clientHttpRequest * http) |
1863 | { | |
1864 | ConnStateData *conn = http->conn; | |
1865 | StoreEntry *entry; | |
ebb6e9a0 | 1866 | debug(33, 3) ("clientKeepaliveNextRequest: FD %d\n", conn->fd); |
1a92a1e2 | 1867 | conn->defer.until = 0; /* Kick it to read a new request */ |
1868 | httpRequestFree(http); | |
21f2031d | 1869 | if ((http = conn->chr) == NULL) { |
1870 | debug(33, 5) ("clientKeepaliveNextRequest: FD %d reading next req\n", | |
1871 | conn->fd); | |
94439e4e | 1872 | fd_note(conn->fd, "Waiting for next request"); |
21f2031d | 1873 | /* |
1874 | * Set the timeout BEFORE calling clientReadRequest(). | |
1875 | */ | |
8851b98c | 1876 | commSetTimeout(conn->fd, Config.Timeout.pconn, requestTimeout, conn); |
7f6ffd15 | 1877 | /* |
1878 | * CYGWIN has a problem and is blocking on read() requests when there | |
1879 | * is no data present. | |
1880 | * This hack may hit performance a little, but it's better than | |
1881 | * blocking!. | |
1882 | */ | |
b05490a8 | 1883 | #ifdef _SQUID_CYGWIN_ |
7f6ffd15 | 1884 | commSetSelect(conn->fd, COMM_SELECT_READ, clientReadRequest, conn, 0); |
b05490a8 | 1885 | #else |
21f2031d | 1886 | clientReadRequest(conn->fd, conn); /* Read next request */ |
b05490a8 | 1887 | #endif |
21f2031d | 1888 | /* |
1889 | * Note, the FD may be closed at this point. | |
1890 | */ | |
1891 | } else if ((entry = http->entry) == NULL) { | |
1892 | /* | |
1893 | * this request is in progress, maybe doing an ACL or a redirect, | |
1894 | * execution will resume after the operation completes. | |
1895 | */ | |
1896 | } else { | |
1a92a1e2 | 1897 | debug(33, 1) ("clientKeepaliveNextRequest: FD %d Sending next\n", |
1898 | conn->fd); | |
7ddc902f | 1899 | assert(entry); |
06d2839d | 1900 | if (0 == storeClientCopyPending(http->sc, entry, http)) { |
b7fe0ab0 | 1901 | if (EBIT_TEST(entry->flags, ENTRY_ABORTED)) |
1902 | debug(33, 0) ("clientKeepaliveNextRequest: ENTRY_ABORTED\n"); | |
06d2839d | 1903 | storeClientCopy(http->sc, entry, |
1a92a1e2 | 1904 | http->out.offset, |
1905 | http->out.offset, | |
cc27d775 | 1906 | CLIENT_SOCK_SZ, |
1907 | memAllocate(MEM_CLIENT_SOCK_BUF), | |
1a92a1e2 | 1908 | clientSendMoreData, |
1909 | http); | |
1910 | } | |
1a92a1e2 | 1911 | } |
1912 | } | |
1913 | ||
fc5d6f7f | 1914 | static void |
79a15e0a | 1915 | clientWriteComplete(int fd, char *bufnotused, size_t size, int errflag, void *data) |
7a2f978b | 1916 | { |
1917 | clientHttpRequest *http = data; | |
7a2f978b | 1918 | StoreEntry *entry = http->entry; |
b34ed725 | 1919 | int done; |
7a2f978b | 1920 | http->out.size += size; |
93f9abd0 | 1921 | debug(33, 5) ("clientWriteComplete: FD %d, sz %d, err %d, off %d, len %d\n", |
007b8be4 | 1922 | fd, size, errflag, (int) http->out.offset, entry ? objectLen(entry) : 0); |
d8b83480 | 1923 | if (size > 0) { |
83704487 | 1924 | kb_incr(&statCounter.client_http.kbytes_out, size); |
ea285003 | 1925 | if (isTcpHit(http->log_type)) |
83704487 | 1926 | kb_incr(&statCounter.client_http.hit_kbytes_out, size); |
d8b83480 | 1927 | } |
7a2f978b | 1928 | if (errflag) { |
e55650e3 | 1929 | /* |
1930 | * just close the socket, httpRequestFree will abort if needed | |
1931 | */ | |
7a2f978b | 1932 | comm_close(fd); |
fdfc0d63 | 1933 | } else if (NULL == entry) { |
1934 | comm_close(fd); /* yuk */ | |
b7fe0ab0 | 1935 | } else if (EBIT_TEST(entry->flags, ENTRY_ABORTED)) { |
7a2f978b | 1936 | comm_close(fd); |
a200bbd2 | 1937 | } else if ((done = clientCheckTransferDone(http)) != 0 || size == 0) { |
93f9abd0 | 1938 | debug(33, 5) ("clientWriteComplete: FD %d transfer is DONE\n", fd); |
7a2f978b | 1939 | /* We're finished case */ |
efd900cb | 1940 | if (httpReplyBodySize(http->request->method, entry->mem_obj->reply) < 0) { |
ebb6e9a0 | 1941 | debug(33, 5) ("clientWriteComplete: closing, content_length < 0\n"); |
c07aed63 | 1942 | comm_close(fd); |
1943 | } else if (!done) { | |
ebb6e9a0 | 1944 | debug(33, 5) ("clientWriteComplete: closing, !done\n"); |
c07aed63 | 1945 | comm_close(fd); |
80980266 | 1946 | } else if (clientGotNotEnough(http)) { |
1947 | debug(33, 5) ("clientWriteComplete: client didn't get all it expected\n"); | |
7a2f978b | 1948 | comm_close(fd); |
92695e5e | 1949 | } else if (http->request->flags.proxy_keepalive) { |
93f9abd0 | 1950 | debug(33, 5) ("clientWriteComplete: FD %d Keeping Alive\n", fd); |
1a92a1e2 | 1951 | clientKeepaliveNextRequest(http); |
7a2f978b | 1952 | } else { |
1953 | comm_close(fd); | |
1954 | } | |
0483b991 | 1955 | } else if (clientReplyBodyTooLarge((int) http->out.offset)) { |
1956 | comm_close(fd); | |
7a2f978b | 1957 | } else { |
1958 | /* More data will be coming from primary server; register with | |
1959 | * storage manager. */ | |
b7fe0ab0 | 1960 | if (EBIT_TEST(entry->flags, ENTRY_ABORTED)) |
1961 | debug(33, 0) ("clientWriteComplete 2: ENTRY_ABORTED\n"); | |
06d2839d | 1962 | storeClientCopy(http->sc, entry, |
7a2f978b | 1963 | http->out.offset, |
1964 | http->out.offset, | |
cc27d775 | 1965 | CLIENT_SOCK_SZ, |
1966 | memAllocate(MEM_CLIENT_SOCK_BUF), | |
7a2f978b | 1967 | clientSendMoreData, |
1968 | http); | |
1969 | } | |
1970 | } | |
1971 | ||
038eb4ed | 1972 | /* |
99edd1c3 | 1973 | * client issued a request with an only-if-cached cache-control directive; |
038eb4ed | 1974 | * we did not find a cached object that can be returned without |
99edd1c3 | 1975 | * contacting other servers; |
038eb4ed | 1976 | * respond with a 504 (Gateway Timeout) as suggested in [RFC 2068] |
1977 | */ | |
1978 | static void | |
1979 | clientProcessOnlyIfCachedMiss(clientHttpRequest * http) | |
1980 | { | |
1981 | char *url = http->uri; | |
1982 | request_t *r = http->request; | |
1983 | ErrorState *err = NULL; | |
1984 | debug(33, 4) ("clientProcessOnlyIfCachedMiss: '%s %s'\n", | |
1985 | RequestMethodStr[r->method], url); | |
038eb4ed | 1986 | http->al.http.code = HTTP_GATEWAY_TIMEOUT; |
1987 | err = errorCon(ERR_ONLY_IF_CACHED_MISS, HTTP_GATEWAY_TIMEOUT); | |
1988 | err->request = requestLink(r); | |
1989 | err->src_addr = http->conn->peer.sin_addr; | |
d173c77d | 1990 | if (http->entry) { |
06d2839d | 1991 | storeUnregister(http->sc, http->entry, http); |
e1dcf02d | 1992 | http->sc = NULL; |
d173c77d | 1993 | storeUnlockObject(http->entry); |
1994 | } | |
92695e5e | 1995 | http->entry = clientCreateStoreEntry(http, r->method, null_request_flags); |
038eb4ed | 1996 | errorAppendEntry(http->entry, err); |
1997 | } | |
1998 | ||
cd7a423d | 1999 | /* |
7b1e21ff | 2000 | * Return true if we should force a cache miss on this range request. |
2001 | * entry must be non-NULL. | |
cd7a423d | 2002 | */ |
2003 | static int | |
7b1e21ff | 2004 | clientCheckRangeForceMiss(StoreEntry * entry, HttpHdrRange * range) |
cd7a423d | 2005 | { |
cd7a423d | 2006 | /* |
7b1e21ff | 2007 | * If the range_offset_limit is NOT in effect, there |
2008 | * is no reason to force a miss. | |
cd7a423d | 2009 | */ |
7b1e21ff | 2010 | if (0 == httpHdrRangeOffsetLimit(range)) |
cd7a423d | 2011 | return 0; |
2012 | /* | |
7b1e21ff | 2013 | * Here, we know it's possibly a hit. If we already have the |
cd7a423d | 2014 | * whole object cached, we won't force a miss. |
2015 | */ | |
2016 | if (STORE_OK == entry->store_status) | |
2017 | return 0; /* we have the whole object */ | |
2018 | /* | |
2019 | * Now we have a hit on a PENDING object. We need to see | |
2020 | * if the part we want is already cached. If so, we don't | |
2021 | * force a miss. | |
2022 | */ | |
2023 | assert(NULL != entry->mem_obj); | |
7b1e21ff | 2024 | if (httpHdrRangeFirstOffset(range) <= entry->mem_obj->inmem_hi) |
cd7a423d | 2025 | return 0; |
2026 | /* | |
2027 | * Even though we have a PENDING copy of the object, we | |
2028 | * don't want to wait to reach the first range offset, | |
2029 | * so we force a miss for a new range request to the | |
2030 | * origin. | |
2031 | */ | |
2032 | return 1; | |
2033 | } | |
2034 | ||
50ddd7a4 | 2035 | static log_type |
2036 | clientProcessRequest2(clientHttpRequest * http) | |
2037 | { | |
1b95ce49 | 2038 | request_t *r = http->request; |
50ddd7a4 | 2039 | StoreEntry *e; |
2f9aa365 | 2040 | e = http->entry = storeGetPublic(http->uri, r->method); |
0c7ccf77 | 2041 | if (r->method == METHOD_HEAD && e == NULL) { |
2042 | /* We can generate a HEAD reply from a cached GET object */ | |
2f9aa365 | 2043 | e = http->entry = storeGetPublic(http->uri, METHOD_GET); |
0c7ccf77 | 2044 | } |
afc1e43f | 2045 | /* Release negatively cached IP-cache entries on reload */ |
2046 | if (r->flags.nocache) | |
ecc3091b | 2047 | ipcacheInvalidate(r->host); |
afc1e43f | 2048 | #if HTTP_VIOLATIONS |
2049 | else if (r->flags.nocache_hack) | |
ecc3091b | 2050 | ipcacheInvalidate(r->host); |
afc1e43f | 2051 | #endif |
6cfa8966 | 2052 | #if USE_CACHE_DIGESTS |
57b1ff70 | 2053 | http->lookup_type = e ? "HIT" : "MISS"; |
1ca847dd | 2054 | #endif |
49d3fcb0 | 2055 | if (NULL == e) { |
50ddd7a4 | 2056 | /* this object isn't in the cache */ |
ac18f51a | 2057 | debug(33, 3) ("clientProcessRequest2: storeGet() MISS\n"); |
50ddd7a4 | 2058 | return LOG_TCP_MISS; |
d87ebd78 | 2059 | } |
2060 | if (Config.onoff.offline) { | |
ac18f51a | 2061 | debug(33, 3) ("clientProcessRequest2: offline HIT\n"); |
b540e168 | 2062 | http->entry = e; |
2063 | return LOG_TCP_HIT; | |
d87ebd78 | 2064 | } |
40fd4e8d | 2065 | if (http->redirect.status) { |
2066 | /* force this to be a miss */ | |
2067 | http->entry = NULL; | |
2068 | return LOG_TCP_MISS; | |
2069 | } | |
d87ebd78 | 2070 | if (!storeEntryValidToSend(e)) { |
ac18f51a | 2071 | debug(33, 3) ("clientProcessRequest2: !storeEntryValidToSend MISS\n"); |
50ddd7a4 | 2072 | http->entry = NULL; |
2073 | return LOG_TCP_MISS; | |
41587298 | 2074 | } |
2075 | if (EBIT_TEST(e->flags, ENTRY_SPECIAL)) { | |
abe471ef | 2076 | /* Special entries are always hits, no matter what the client says */ |
ac18f51a | 2077 | debug(33, 3) ("clientProcessRequest2: ENTRY_SPECIAL HIT\n"); |
abe471ef | 2078 | http->entry = e; |
2079 | return LOG_TCP_HIT; | |
41587298 | 2080 | } |
9f60cfdf | 2081 | #if HTTP_VIOLATIONS |
92b74dd5 | 2082 | if (e->store_status == STORE_PENDING) { |
2083 | if (r->flags.nocache || r->flags.nocache_hack) { | |
2084 | debug(33, 3) ("Clearing no-cache for STORE_PENDING request\n\t%s\n", | |
2085 | storeUrl(e)); | |
2086 | r->flags.nocache = 0; | |
2087 | r->flags.nocache_hack = 0; | |
2088 | } | |
1b95ce49 | 2089 | } |
9f60cfdf | 2090 | #endif |
41587298 | 2091 | if (r->flags.nocache) { |
ac18f51a | 2092 | debug(33, 3) ("clientProcessRequest2: no-cache REFRESH MISS\n"); |
50ddd7a4 | 2093 | http->entry = NULL; |
ecc3091b | 2094 | ipcacheInvalidate(r->host); |
ee1679df | 2095 | return LOG_TCP_CLIENT_REFRESH_MISS; |
7ddc902f | 2096 | } |
60b8e0e5 | 2097 | if (NULL == r->range) { |
2098 | (void) 0; | |
2099 | } else if (httpHdrRangeWillBeComplex(r->range)) { | |
7ddc902f | 2100 | /* |
2101 | * Some clients break if we return "200 OK" for a Range | |
2102 | * request. We would have to return "200 OK" for a _complex_ | |
2103 | * Range request that is also a HIT. Thus, let's prevent HITs | |
2104 | * on complex Range requests | |
2105 | */ | |
ac18f51a | 2106 | debug(33, 3) ("clientProcessRequest2: complex range MISS\n"); |
5d679edb | 2107 | http->entry = NULL; |
cd7a423d | 2108 | return LOG_TCP_MISS; |
7b1e21ff | 2109 | } else if (clientCheckRangeForceMiss(e, r->range)) { |
2a4506f1 | 2110 | debug(33, 3) ("clientProcessRequest2: forcing miss due to range_offset_limit\n"); |
cd7a423d | 2111 | http->entry = NULL; |
5d679edb | 2112 | return LOG_TCP_MISS; |
50ddd7a4 | 2113 | } |
ac18f51a | 2114 | debug(33, 3) ("clientProcessRequest2: default HIT\n"); |
41587298 | 2115 | http->entry = e; |
2116 | return LOG_TCP_HIT; | |
50ddd7a4 | 2117 | } |
2118 | ||
4c323c5f | 2119 | static void |
fb63215a | 2120 | clientProcessRequest(clientHttpRequest * http) |
7a2f978b | 2121 | { |
23d92c64 | 2122 | char *url = http->uri; |
50ddd7a4 | 2123 | request_t *r = http->request; |
fb63215a | 2124 | int fd = http->conn->fd; |
1bea1d83 | 2125 | HttpReply *rep; |
ccf44862 | 2126 | http_version_t version; |
93f9abd0 | 2127 | debug(33, 4) ("clientProcessRequest: %s '%s'\n", |
50ddd7a4 | 2128 | RequestMethodStr[r->method], |
7a2f978b | 2129 | url); |
fb63215a | 2130 | if (r->method == METHOD_CONNECT) { |
7a2f978b | 2131 | http->log_type = LOG_TCP_MISS; |
974ba0ee | 2132 | sslStart(fd, url, r, &http->out.size, &http->al.http.code); |
ea0efb98 | 2133 | return; |
fb63215a | 2134 | } else if (r->method == METHOD_PURGE) { |
ea0efb98 | 2135 | clientPurgeRequest(http); |
2136 | return; | |
fb63215a | 2137 | } else if (r->method == METHOD_TRACE) { |
50ddd7a4 | 2138 | if (r->max_forwards == 0) { |
92695e5e | 2139 | http->entry = clientCreateStoreEntry(http, r->method, null_request_flags); |
b17b22eb | 2140 | storeReleaseRequest(http->entry); |
2141 | storeBuffer(http->entry); | |
1bea1d83 | 2142 | rep = httpReplyCreate(); |
bffee5af | 2143 | httpBuildVersion(&version, 1, 0); |
ccf44862 | 2144 | httpReplySetHeaders(rep, version, HTTP_OK, NULL, "text/plain", |
2246b732 | 2145 | httpRequestPrefixLen(r), 0, squid_curtime); |
1bea1d83 | 2146 | httpReplySwapOut(rep, http->entry); |
2147 | httpReplyDestroy(rep); | |
2246b732 | 2148 | httpRequestSwapOut(r, http->entry); |
b17b22eb | 2149 | storeComplete(http->entry); |
7a2f978b | 2150 | return; |
2151 | } | |
2152 | /* yes, continue */ | |
6addbd81 | 2153 | http->log_type = LOG_TCP_MISS; |
31be8b80 | 2154 | } else { |
efb9218c | 2155 | http->log_type = clientProcessRequest2(http); |
7a2f978b | 2156 | } |
93f9abd0 | 2157 | debug(33, 4) ("clientProcessRequest: %s for '%s'\n", |
7a2f978b | 2158 | log_tags[http->log_type], |
23d92c64 | 2159 | http->uri); |
7a2f978b | 2160 | http->out.offset = 0; |
49d3fcb0 | 2161 | if (NULL != http->entry) { |
2162 | storeLockObject(http->entry); | |
2163 | storeCreateMemObject(http->entry, http->uri, http->log_uri); | |
2391a162 | 2164 | http->entry->mem_obj->method = r->method; |
06d2839d | 2165 | http->sc = storeClientListAdd(http->entry, http); |
447e176b | 2166 | #if DELAY_POOLS |
06d2839d | 2167 | delaySetStoreClient(http->sc, delayClient(r)); |
2b906e48 | 2168 | #endif |
06d2839d | 2169 | storeClientCopy(http->sc, http->entry, |
7a2f978b | 2170 | http->out.offset, |
2171 | http->out.offset, | |
cc27d775 | 2172 | CLIENT_SOCK_SZ, |
2173 | memAllocate(MEM_CLIENT_SOCK_BUF), | |
7a2f978b | 2174 | clientCacheHit, |
2175 | http); | |
49d3fcb0 | 2176 | } else { |
05f18bd0 | 2177 | /* MISS CASE, http->log_type is already set! */ |
fb63215a | 2178 | clientProcessMiss(http); |
7a2f978b | 2179 | } |
2180 | } | |
2181 | ||
2182 | /* | |
2183 | * Prepare to fetch the object as it's a cache miss of some kind. | |
2184 | */ | |
2185 | static void | |
fb63215a | 2186 | clientProcessMiss(clientHttpRequest * http) |
7a2f978b | 2187 | { |
23d92c64 | 2188 | char *url = http->uri; |
f44af445 | 2189 | request_t *r = http->request; |
7a2f978b | 2190 | ErrorState *err = NULL; |
93f9abd0 | 2191 | debug(33, 4) ("clientProcessMiss: '%s %s'\n", |
f44af445 | 2192 | RequestMethodStr[r->method], url); |
79e0dc20 | 2193 | /* |
2194 | * We might have a left-over StoreEntry from a failed cache hit | |
2195 | * or IMS request. | |
2196 | */ | |
2197 | if (http->entry) { | |
d20b1cd0 | 2198 | if (EBIT_TEST(http->entry->flags, ENTRY_SPECIAL)) { |
12784378 | 2199 | debug(33, 0) ("clientProcessMiss: miss on a special object (%s).\n", url); |
d20b1cd0 | 2200 | debug(33, 0) ("\tlog_type = %s\n", log_tags[http->log_type]); |
2201 | storeEntryDump(http->entry, 1); | |
2202 | } | |
06d2839d | 2203 | storeUnregister(http->sc, http->entry, http); |
e1dcf02d | 2204 | http->sc = NULL; |
79e0dc20 | 2205 | storeUnlockObject(http->entry); |
2206 | http->entry = NULL; | |
2207 | } | |
7c1d4010 | 2208 | if (clientOnlyIfCached(http)) { |
2209 | clientProcessOnlyIfCachedMiss(http); | |
2210 | return; | |
2211 | } | |
9330543e | 2212 | /* |
2213 | * Deny loops when running in accelerator/transproxy mode. | |
2214 | */ | |
92695e5e | 2215 | if (http->flags.accel && r->flags.loopdetect) { |
9330543e | 2216 | http->al.http.code = HTTP_FORBIDDEN; |
2217 | err = errorCon(ERR_ACCESS_DENIED, HTTP_FORBIDDEN); | |
2218 | err->request = requestLink(r); | |
2219 | err->src_addr = http->conn->peer.sin_addr; | |
92695e5e | 2220 | http->entry = clientCreateStoreEntry(http, r->method, null_request_flags); |
9330543e | 2221 | errorAppendEntry(http->entry, err); |
2222 | return; | |
2223 | } | |
79e0dc20 | 2224 | assert(http->out.offset == 0); |
f44af445 | 2225 | http->entry = clientCreateStoreEntry(http, r->method, r->flags); |
6d38ef86 | 2226 | if (http->redirect.status) { |
2227 | HttpReply *rep = httpReplyCreate(); | |
efd900cb | 2228 | #if LOG_TCP_REDIRECTS |
2229 | http->log_type = LOG_TCP_REDIRECT; | |
2230 | #endif | |
6d38ef86 | 2231 | storeReleaseRequest(http->entry); |
2232 | httpRedirectReply(rep, http->redirect.status, http->redirect.location); | |
2233 | httpReplySwapOut(rep, http->entry); | |
2234 | httpReplyDestroy(rep); | |
2235 | storeComplete(http->entry); | |
2236 | return; | |
2237 | } | |
1da5651f | 2238 | if (http->flags.internal) |
2239 | r->protocol = PROTO_INTERNAL; | |
7e3ce7b9 | 2240 | fwdStart(http->conn->fd, http->entry, r); |
7a2f978b | 2241 | } |
2242 | ||
99edd1c3 | 2243 | static clientHttpRequest * |
2244 | parseHttpRequestAbort(ConnStateData * conn, const char *uri) | |
2245 | { | |
28c60158 | 2246 | clientHttpRequest *http; |
2247 | http = CBDATA_ALLOC(clientHttpRequest, NULL); | |
99edd1c3 | 2248 | http->conn = conn; |
2249 | http->start = current_time; | |
2250 | http->req_sz = conn->in.offset; | |
2251 | http->uri = xstrdup(uri); | |
c68e9c6b | 2252 | http->log_uri = xstrndup(uri, MAX_URL); |
d192d11f | 2253 | http->range_iter.boundary = StringNull; |
0f1bc304 | 2254 | dlinkAdd(http, &http->active, &ClientActiveRequests); |
99edd1c3 | 2255 | return http; |
2256 | } | |
2257 | ||
7a2f978b | 2258 | /* |
2259 | * parseHttpRequest() | |
2260 | * | |
2261 | * Returns | |
2262 | * NULL on error or incomplete request | |
2263 | * a clientHttpRequest structure on success | |
2264 | */ | |
2265 | static clientHttpRequest * | |
2266 | parseHttpRequest(ConnStateData * conn, method_t * method_p, int *status, | |
ea285003 | 2267 | char **prefix_p, size_t * req_line_sz_p) |
7a2f978b | 2268 | { |
2269 | char *inbuf = NULL; | |
2270 | char *mstr = NULL; | |
2271 | char *url = NULL; | |
2272 | char *req_hdr = NULL; | |
ccf44862 | 2273 | http_version_t http_ver; |
7a2f978b | 2274 | char *token = NULL; |
2275 | char *t = NULL; | |
2334c194 | 2276 | char *end; |
7a2f978b | 2277 | size_t header_sz; /* size of headers, not including first line */ |
ea285003 | 2278 | size_t prefix_sz; /* size of whole request (req-line + headers) */ |
7a2f978b | 2279 | size_t url_sz; |
c68e9c6b | 2280 | size_t req_sz; |
7a2f978b | 2281 | method_t method; |
2282 | clientHttpRequest *http = NULL; | |
5cafc1d6 | 2283 | #if IPF_TRANSPARENT |
2284 | struct natlookup natLookup; | |
2285 | static int natfd = -1; | |
6efce75c | 2286 | static int siocgnatl_cmd = SIOCGNATL & 0xff; |
2287 | int x; | |
5cafc1d6 | 2288 | #endif |
d852fbad | 2289 | #if LINUX_NETFILTER |
2290 | size_t sock_sz = sizeof(conn->me); | |
2291 | #endif | |
7a2f978b | 2292 | |
c68e9c6b | 2293 | if ((req_sz = headersEnd(conn->in.buf, conn->in.offset)) == 0) { |
2294 | debug(33, 5) ("Incomplete request, waiting for end of headers\n"); | |
7a2f978b | 2295 | *status = 0; |
08e70b8f | 2296 | *prefix_p = NULL; |
2297 | *method_p = METHOD_NONE; | |
7a2f978b | 2298 | return NULL; |
2299 | } | |
c68e9c6b | 2300 | assert(req_sz <= conn->in.offset); |
2301 | /* Use memcpy, not strdup! */ | |
2302 | inbuf = xmalloc(req_sz + 1); | |
2303 | xmemcpy(inbuf, conn->in.buf, req_sz); | |
2304 | *(inbuf + req_sz) = '\0'; | |
7a2f978b | 2305 | |
99edd1c3 | 2306 | /* pre-set these values to make aborting simpler */ |
2307 | *prefix_p = inbuf; | |
2308 | *method_p = METHOD_NONE; | |
2309 | *status = -1; | |
2310 | ||
c68e9c6b | 2311 | /* Barf on NULL characters in the headers */ |
2312 | if (strlen(inbuf) != req_sz) { | |
2313 | debug(33, 1) ("parseHttpRequest: Requestheader contains NULL characters\n"); | |
2314 | return parseHttpRequestAbort(conn, "error:invalid-request"); | |
2315 | } | |
7a2f978b | 2316 | /* Look for request method */ |
2317 | if ((mstr = strtok(inbuf, "\t ")) == NULL) { | |
93f9abd0 | 2318 | debug(33, 1) ("parseHttpRequest: Can't get request method\n"); |
99edd1c3 | 2319 | return parseHttpRequestAbort(conn, "error:invalid-request-method"); |
7a2f978b | 2320 | } |
2321 | method = urlParseMethod(mstr); | |
2322 | if (method == METHOD_NONE) { | |
93f9abd0 | 2323 | debug(33, 1) ("parseHttpRequest: Unsupported method '%s'\n", mstr); |
99edd1c3 | 2324 | return parseHttpRequestAbort(conn, "error:unsupported-request-method"); |
7a2f978b | 2325 | } |
93f9abd0 | 2326 | debug(33, 5) ("parseHttpRequest: Method is '%s'\n", mstr); |
3775d53c | 2327 | *method_p = method; |
7a2f978b | 2328 | |
d548ee64 | 2329 | /* look for URL+HTTP/x.x */ |
c68e9c6b | 2330 | if ((url = strtok(NULL, "\n")) == NULL) { |
93f9abd0 | 2331 | debug(33, 1) ("parseHttpRequest: Missing URL\n"); |
99edd1c3 | 2332 | return parseHttpRequestAbort(conn, "error:missing-url"); |
7a2f978b | 2333 | } |
b6a2f15e | 2334 | while (xisspace(*url)) |
c68e9c6b | 2335 | url++; |
d548ee64 | 2336 | t = url + strlen(url); |
2337 | assert(*t == '\0'); | |
2338 | token = NULL; | |
2339 | while (t > url) { | |
2340 | t--; | |
b6a2f15e | 2341 | if (xisspace(*t) && !strncmp(t + 1, "HTTP/", 5)) { |
d548ee64 | 2342 | token = t + 1; |
2343 | break; | |
2344 | } | |
2345 | } | |
b6a2f15e | 2346 | while (t > url && xisspace(*t)) |
d548ee64 | 2347 | *(t--) = '\0'; |
2348 | debug(33, 5) ("parseHttpRequest: URI is '%s'\n", url); | |
2349 | if (token == NULL) { | |
93f9abd0 | 2350 | debug(33, 3) ("parseHttpRequest: Missing HTTP identifier\n"); |
46052490 | 2351 | #if RELAXED_HTTP_PARSER |
bffee5af | 2352 | httpBuildVersion(&http_ver, 0, 9); /* wild guess */ |
46052490 | 2353 | #else |
99edd1c3 | 2354 | return parseHttpRequestAbort(conn, "error:missing-http-ident"); |
7518fce5 | 2355 | #endif |
99edd1c3 | 2356 | } else { |
bffee5af | 2357 | if (sscanf(token + 5, "%d.%d", &http_ver.major, &http_ver.minor) != 2) { |
2358 | debug(33, 3) ("parseHttpRequest: Invalid HTTP identifier.\n"); | |
2359 | return parseHttpRequestAbort(conn, "error: invalid HTTP-ident"); | |
2360 | } | |
2361 | debug(33, 6) ("parseHttpRequest: Client HTTP version %d.%d.\n", http_ver.major, http_ver.minor); | |
99edd1c3 | 2362 | } |
7a2f978b | 2363 | |
c68e9c6b | 2364 | /* |
2365 | * Process headers after request line | |
2366 | */ | |
2367 | req_hdr = strtok(NULL, null_string); | |
2368 | header_sz = req_sz - (req_hdr - inbuf); | |
2334c194 | 2369 | if (0 == header_sz) { |
1a92a1e2 | 2370 | debug(33, 3) ("parseHttpRequest: header_sz == 0\n"); |
7a2f978b | 2371 | *status = 0; |
2372 | return NULL; | |
2373 | } | |
754b9ce9 | 2374 | assert(header_sz > 0); |
2375 | debug(33, 3) ("parseHttpRequest: req_hdr = {%s}\n", req_hdr); | |
2334c194 | 2376 | end = req_hdr + header_sz; |
04990e2d | 2377 | debug(33, 3) ("parseHttpRequest: end = {%s}\n", end); |
99edd1c3 | 2378 | |
99edd1c3 | 2379 | prefix_sz = end - inbuf; |
2380 | *req_line_sz_p = req_hdr - inbuf; | |
ea285003 | 2381 | debug(33, 3) ("parseHttpRequest: prefix_sz = %d, req_line_sz = %d\n", |
99edd1c3 | 2382 | (int) prefix_sz, (int) *req_line_sz_p); |
2383 | assert(prefix_sz <= conn->in.offset); | |
7a2f978b | 2384 | |
2385 | /* Ok, all headers are received */ | |
28c60158 | 2386 | http = CBDATA_ALLOC(clientHttpRequest, NULL); |
7a2f978b | 2387 | http->http_ver = http_ver; |
2388 | http->conn = conn; | |
2389 | http->start = current_time; | |
99edd1c3 | 2390 | http->req_sz = prefix_sz; |
d192d11f | 2391 | http->range_iter.boundary = StringNull; |
99edd1c3 | 2392 | *prefix_p = xmalloc(prefix_sz + 1); |
2393 | xmemcpy(*prefix_p, conn->in.buf, prefix_sz); | |
2394 | *(*prefix_p + prefix_sz) = '\0'; | |
0f1bc304 | 2395 | dlinkAdd(http, &http->active, &ClientActiveRequests); |
7a2f978b | 2396 | |
ea285003 | 2397 | debug(33, 5) ("parseHttpRequest: Request Header is\n%s\n", (*prefix_p) + *req_line_sz_p); |
7a2f978b | 2398 | if ((t = strchr(url, '#'))) /* remove HTML anchors */ |
2399 | *t = '\0'; | |
2400 | ||
4162ee3b | 2401 | /* handle internal objects */ |
1da5651f | 2402 | if (internalCheck(url)) { |
4162ee3b | 2403 | /* prepend our name & port */ |
1da5651f | 2404 | http->uri = xstrdup(internalLocalUri(NULL, url)); |
77ed547a | 2405 | http->flags.internal = 1; |
c68e9c6b | 2406 | http->flags.accel = 1; |
4162ee3b | 2407 | } |
7a2f978b | 2408 | /* see if we running in Config2.Accel.on, if so got to convert it to URL */ |
4162ee3b | 2409 | else if (Config2.Accel.on && *url == '/') { |
7a2f978b | 2410 | /* prepend the accel prefix */ |
dbfed404 | 2411 | if (opt_accel_uses_host && (t = mime_get_header(req_hdr, "Host"))) { |
42b51993 | 2412 | int vport = (int) Config.Accel.port; |
2413 | char *q; | |
7a2f978b | 2414 | /* If a Host: header was specified, use it to build the URL |
2415 | * instead of the one in the Config file. */ | |
2416 | /* | |
2417 | * XXX Use of the Host: header here opens a potential | |
2418 | * security hole. There are no checks that the Host: value | |
2419 | * corresponds to one of your servers. It might, for example, | |
2420 | * refer to www.playboy.com. The 'dst' and/or 'dst_domain' ACL | |
2421 | * types should be used to prevent httpd-accelerators | |
2422 | * handling requests for non-local servers */ | |
42b51993 | 2423 | strtok(t, " /;@"); |
2424 | if ((q = strchr(t, ':'))) { | |
2425 | *q++ = '\0'; | |
2426 | vport = atoi(q); | |
2427 | } | |
12fc602c | 2428 | url_sz = strlen(url) + 32 + Config.appendDomainLen + |
2429 | strlen(t); | |
23d92c64 | 2430 | http->uri = xcalloc(url_sz, 1); |
2431 | snprintf(http->uri, url_sz, "http://%s:%d%s", | |
42b51993 | 2432 | t, vport, url); |
dbfed404 | 2433 | } else if (vhost_mode) { |
42b51993 | 2434 | int vport; |
dbfed404 | 2435 | /* Put the local socket IP address as the hostname */ |
2436 | url_sz = strlen(url) + 32 + Config.appendDomainLen; | |
2437 | http->uri = xcalloc(url_sz, 1); | |
42b51993 | 2438 | if (vport_mode) |
2439 | vport = (int) ntohs(http->conn->me.sin_port); | |
2440 | else | |
2441 | vport = (int) Config.Accel.port; | |
5cafc1d6 | 2442 | #if IPF_TRANSPARENT |
135171fe | 2443 | natLookup.nl_inport = http->conn->me.sin_port; |
2444 | natLookup.nl_outport = http->conn->peer.sin_port; | |
2445 | natLookup.nl_inip = http->conn->me.sin_addr; | |
2446 | natLookup.nl_outip = http->conn->peer.sin_addr; | |
2447 | natLookup.nl_flags = IPN_TCP; | |
2448 | if (natfd < 0) | |
2449 | natfd = open(IPL_NAT, O_RDONLY, 0); | |
2450 | if (natfd < 0) { | |
2451 | debug(50, 1) ("parseHttpRequest: NAT open failed: %s\n", | |
2452 | xstrerror()); | |
ac18f51a | 2453 | return parseHttpRequestAbort(conn, "error:nat-open-failed"); |
5cafc1d6 | 2454 | } |
6efce75c | 2455 | /* |
2456 | * IP-Filter changed the type for SIOCGNATL between | |
2457 | * 3.3 and 3.4. It also changed the cmd value for | |
2458 | * SIOCGNATL, so at least we can detect it. We could | |
2459 | * put something in configure and use ifdefs here, but | |
2460 | * this seems simpler. | |
2461 | */ | |
2462 | if (63 == siocgnatl_cmd) { | |
2463 | struct natlookup *nlp = &natLookup; | |
2464 | x = ioctl(natfd, SIOCGNATL, &nlp); | |
2465 | } else { | |
2466 | x = ioctl(natfd, SIOCGNATL, &natLookup); | |
2467 | } | |
2468 | if (x < 0) { | |
ac18f51a | 2469 | if (errno != ESRCH) { |
2470 | debug(50, 1) ("parseHttpRequest: NAT lookup failed: ioctl(SIOCGNATL)\n"); | |
2471 | close(natfd); | |
2472 | natfd = -1; | |
2473 | return parseHttpRequestAbort(conn, "error:nat-lookup-failed"); | |
2474 | } else | |
2475 | snprintf(http->uri, url_sz, "http://%s:%d%s", | |
2476 | inet_ntoa(http->conn->me.sin_addr), | |
42b51993 | 2477 | vport, url); |
ac18f51a | 2478 | } else |
2479 | snprintf(http->uri, url_sz, "http://%s:%d%s", | |
2480 | inet_ntoa(natLookup.nl_realip), | |
42b51993 | 2481 | vport, url); |
5cafc1d6 | 2482 | #else |
d852fbad | 2483 | #if LINUX_NETFILTER |
f0debecb | 2484 | /* If the call fails the address structure will be unchanged */ |
2485 | getsockopt(conn->fd, SOL_IP, SO_ORIGINAL_DST, &conn->me, &sock_sz); | |
2486 | debug(33, 5) ("parseHttpRequest: addr = %s", inet_ntoa(conn->me.sin_addr)); | |
d852fbad | 2487 | #endif |
dbfed404 | 2488 | snprintf(http->uri, url_sz, "http://%s:%d%s", |
2489 | inet_ntoa(http->conn->me.sin_addr), | |
42b51993 | 2490 | vport, url); |
5cafc1d6 | 2491 | #endif |
93f9abd0 | 2492 | debug(33, 5) ("VHOST REWRITE: '%s'\n", http->uri); |
7a2f978b | 2493 | } else { |
2494 | url_sz = strlen(Config2.Accel.prefix) + strlen(url) + | |
2495 | Config.appendDomainLen + 1; | |
23d92c64 | 2496 | http->uri = xcalloc(url_sz, 1); |
2497 | snprintf(http->uri, url_sz, "%s%s", Config2.Accel.prefix, url); | |
7a2f978b | 2498 | } |
77ed547a | 2499 | http->flags.accel = 1; |
7a2f978b | 2500 | } else { |
2501 | /* URL may be rewritten later, so make extra room */ | |
2502 | url_sz = strlen(url) + Config.appendDomainLen + 5; | |
23d92c64 | 2503 | http->uri = xcalloc(url_sz, 1); |
2504 | strcpy(http->uri, url); | |
77ed547a | 2505 | http->flags.accel = 0; |
7a2f978b | 2506 | } |
7e3ce7b9 | 2507 | if (!stringHasCntl(http->uri)) |
c68e9c6b | 2508 | http->log_uri = xstrndup(http->uri, MAX_URL); |
d548ee64 | 2509 | else |
9bc73deb | 2510 | http->log_uri = xstrndup(rfc1738_escape_unescaped(http->uri), MAX_URL); |
93f9abd0 | 2511 | debug(33, 5) ("parseHttpRequest: Complete request received\n"); |
7a2f978b | 2512 | xfree(inbuf); |
7a2f978b | 2513 | *status = 1; |
2514 | return http; | |
2515 | } | |
2516 | ||
2517 | static int | |
79d39a72 | 2518 | clientReadDefer(int fdnotused, void *data) |
7a2f978b | 2519 | { |
2520 | ConnStateData *conn = data; | |
94439e4e | 2521 | if (conn->body.size_left) |
2522 | return conn->in.offset >= conn->in.size; | |
2523 | else | |
2524 | return conn->defer.until > squid_curtime; | |
7a2f978b | 2525 | } |
2526 | ||
2527 | static void | |
2528 | clientReadRequest(int fd, void *data) | |
2529 | { | |
2530 | ConnStateData *conn = data; | |
2531 | int parser_return_code = 0; | |
2532 | int k; | |
2533 | request_t *request = NULL; | |
7a2f978b | 2534 | int size; |
58cd5bbd | 2535 | void *p; |
7a2f978b | 2536 | method_t method; |
2537 | clientHttpRequest *http = NULL; | |
2538 | clientHttpRequest **H = NULL; | |
08e70b8f | 2539 | char *prefix = NULL; |
7a2f978b | 2540 | ErrorState *err = NULL; |
2541 | fde *F = &fd_table[fd]; | |
44db45e8 | 2542 | int len = conn->in.size - conn->in.offset - 1; |
93f9abd0 | 2543 | debug(33, 4) ("clientReadRequest: FD %d: reading request...\n", fd); |
83704487 | 2544 | statCounter.syscalls.sock.reads++; |
7a2f978b | 2545 | size = read(fd, conn->in.buf + conn->in.offset, len); |
d8b83480 | 2546 | if (size > 0) { |
ea285003 | 2547 | fd_bytes(fd, size, FD_READ); |
83704487 | 2548 | kb_incr(&statCounter.client_http.kbytes_in, size); |
d8b83480 | 2549 | } |
44db45e8 | 2550 | /* |
2551 | * Don't reset the timeout value here. The timeout value will be | |
2552 | * set to Config.Timeout.request by httpAccept() and | |
2553 | * clientWriteComplete(), and should apply to the request as a | |
2554 | * whole, not individual read() calls. Plus, it breaks our | |
2555 | * lame half-close detection | |
2556 | */ | |
94439e4e | 2557 | if (size > 0) { |
2558 | conn->in.offset += size; | |
2559 | conn->in.buf[conn->in.offset] = '\0'; /* Terminate the string */ | |
2560 | } else if (size == 0 && len > 0) { | |
2561 | if (conn->chr == NULL && conn->in.offset == 0) { | |
7a2f978b | 2562 | /* no current or pending requests */ |
94439e4e | 2563 | debug(33, 4) ("clientReadRequest: FD %d closed\n", fd); |
7a2f978b | 2564 | comm_close(fd); |
2565 | return; | |
ea285003 | 2566 | } else if (!Config.onoff.half_closed_clients) { |
2567 | /* admin doesn't want to support half-closed client sockets */ | |
94439e4e | 2568 | debug(33, 3) ("clientReadRequest: FD %d aborted (half_closed_clients disabled)\n", fd); |
ea285003 | 2569 | comm_close(fd); |
2570 | return; | |
7a2f978b | 2571 | } |
2572 | /* It might be half-closed, we can't tell */ | |
93f9abd0 | 2573 | debug(33, 5) ("clientReadRequest: FD %d closed?\n", fd); |
58a6c186 | 2574 | F->flags.socket_eof = 1; |
7a2f978b | 2575 | conn->defer.until = squid_curtime + 1; |
2576 | conn->defer.n++; | |
44db45e8 | 2577 | fd_note(fd, "half-closed"); |
94439e4e | 2578 | /* There is one more close check at the end, to detect aborted |
2579 | * (partial) requests. At this point we can't tell if the request | |
2580 | * is partial. | |
2581 | */ | |
2582 | /* Continue to process previously read data */ | |
7a2f978b | 2583 | } else if (size < 0) { |
6d3caf23 | 2584 | if (!ignoreErrno(errno)) { |
7a2f978b | 2585 | debug(50, 2) ("clientReadRequest: FD %d: %s\n", fd, xstrerror()); |
2586 | comm_close(fd); | |
ebf4efff | 2587 | return; |
47130615 | 2588 | } else if (conn->in.offset == 0) { |
7c1d4010 | 2589 | debug(50, 2) ("clientReadRequest: FD %d: no data to process (%s)\n", fd, xstrerror()); |
ebf4efff | 2590 | return; |
7a2f978b | 2591 | } |
ebf4efff | 2592 | /* Continue to process previously read data */ |
7a2f978b | 2593 | } |
94439e4e | 2594 | commSetSelect(fd, COMM_SELECT_READ, clientReadRequest, conn, 0); |
2595 | /* Process request body if any */ | |
2596 | if (conn->in.offset > 0 && conn->body.callback != NULL) | |
2597 | clientProcessBody(conn); | |
2598 | /* Process next request */ | |
2599 | while (conn->in.offset > 0 && conn->body.size_left == 0) { | |
ebf4efff | 2600 | int nrequests; |
cff0c749 | 2601 | size_t req_line_sz; |
94439e4e | 2602 | /* Skip leading (and trailing) whitespace */ |
b6a2f15e | 2603 | while (conn->in.offset > 0 && xisspace(conn->in.buf[0])) { |
9a6f98a5 | 2604 | xmemmove(conn->in.buf, conn->in.buf + 1, conn->in.offset - 1); |
2605 | conn->in.offset--; | |
2606 | } | |
2607 | conn->in.buf[conn->in.offset] = '\0'; /* Terminate the string */ | |
2608 | if (conn->in.offset == 0) | |
2609 | break; | |
ebf4efff | 2610 | /* Limit the number of concurrent requests to 2 */ |
2611 | for (H = &conn->chr, nrequests = 0; *H; H = &(*H)->next, nrequests++); | |
2612 | if (nrequests >= 2) { | |
badd8ff0 | 2613 | debug(33, 3) ("clientReadRequest: FD %d max concurrent requests reached\n", fd); |
93f9abd0 | 2614 | debug(33, 5) ("clientReadRequest: FD %d defering new request until one is done\n", fd); |
47130615 | 2615 | conn->defer.until = squid_curtime + 100; /* Reset when a request is complete */ |
ebf4efff | 2616 | break; |
2617 | } | |
94439e4e | 2618 | conn->in.buf[conn->in.offset] = '\0'; /* Terminate the string */ |
2619 | if (nrequests == 0) | |
2620 | fd_note(conn->fd, "Reading next request"); | |
ebf4efff | 2621 | /* Process request */ |
7a2f978b | 2622 | http = parseHttpRequest(conn, |
2623 | &method, | |
2624 | &parser_return_code, | |
99edd1c3 | 2625 | &prefix, |
2626 | &req_line_sz); | |
13f11a4a | 2627 | if (!http) |
2628 | safe_free(prefix); | |
7a2f978b | 2629 | if (http) { |
2630 | assert(http->req_sz > 0); | |
2631 | conn->in.offset -= http->req_sz; | |
2632 | assert(conn->in.offset >= 0); | |
ebb6e9a0 | 2633 | debug(33, 5) ("conn->in.offset = %d\n", (int) conn->in.offset); |
6fa92aa2 | 2634 | /* |
2635 | * If we read past the end of this request, move the remaining | |
2636 | * data to the beginning | |
2637 | */ | |
2638 | if (conn->in.offset > 0) | |
dbfed404 | 2639 | xmemmove(conn->in.buf, conn->in.buf + http->req_sz, conn->in.offset); |
ebf4efff | 2640 | /* add to the client request queue */ |
7a2f978b | 2641 | for (H = &conn->chr; *H; H = &(*H)->next); |
2642 | *H = http; | |
2643 | conn->nrequests++; | |
7ec87701 | 2644 | /* |
2645 | * I wanted to lock 'http' here since its callback data for | |
2646 | * clientLifetimeTimeout(), but there's no logical place to | |
2647 | * cbdataUnlock if the timeout never happens. Maybe its safe | |
2648 | * enough to assume that if the FD is open, and the timeout | |
2649 | * triggers, that 'http' is valid. | |
2650 | */ | |
b5c39993 | 2651 | commSetTimeout(fd, Config.Timeout.lifetime, clientLifetimeTimeout, http); |
3775d53c | 2652 | if (parser_return_code < 0) { |
93f9abd0 | 2653 | debug(33, 1) ("clientReadRequest: FD %d Invalid Request\n", fd); |
3775d53c | 2654 | err = errorCon(ERR_INVALID_REQ, HTTP_BAD_REQUEST); |
2655 | err->request_hdrs = xstrdup(conn->in.buf); | |
92695e5e | 2656 | http->entry = clientCreateStoreEntry(http, method, null_request_flags); |
3775d53c | 2657 | errorAppendEntry(http->entry, err); |
13f11a4a | 2658 | safe_free(prefix); |
3775d53c | 2659 | break; |
2660 | } | |
23d92c64 | 2661 | if ((request = urlParse(method, http->uri)) == NULL) { |
93f9abd0 | 2662 | debug(33, 5) ("Invalid URL: %s\n", http->uri); |
7a2f978b | 2663 | err = errorCon(ERR_INVALID_URL, HTTP_BAD_REQUEST); |
2664 | err->src_addr = conn->peer.sin_addr; | |
23d92c64 | 2665 | err->url = xstrdup(http->uri); |
7a2f978b | 2666 | http->al.http.code = err->http_status; |
92695e5e | 2667 | http->entry = clientCreateStoreEntry(http, method, null_request_flags); |
79e0dc20 | 2668 | errorAppendEntry(http->entry, err); |
99edd1c3 | 2669 | safe_free(prefix); |
7a2f978b | 2670 | break; |
99edd1c3 | 2671 | } else { |
2672 | /* compile headers */ | |
2673 | /* we should skip request line! */ | |
ea285003 | 2674 | if (!httpRequestParseHeader(request, prefix + req_line_sz)) |
99edd1c3 | 2675 | debug(33, 1) ("Failed to parse request headers: %s\n%s\n", |
2676 | http->uri, prefix); | |
2677 | /* continue anyway? */ | |
7a2f978b | 2678 | } |
c68e9c6b | 2679 | request->flags.accelerated = http->flags.accel; |
ba26bca4 | 2680 | if (!http->flags.internal) { |
2681 | if (internalCheck(strBuf(request->urlpath))) { | |
1f38f50a | 2682 | if (internalHostnameIs(request->host) && |
7e3ce7b9 | 2683 | request->port == ntohs(Config.Sockaddr.http->s.sin_port)) { |
b6a2f15e | 2684 | http->flags.internal = 1; |
ba26bca4 | 2685 | } else if (internalStaticCheck(strBuf(request->urlpath))) { |
c68e9c6b | 2686 | xstrncpy(request->host, internalHostname(), SQUIDHOSTNAMELEN); |
7e3ce7b9 | 2687 | request->port = ntohs(Config.Sockaddr.http->s.sin_port); |
5999b776 | 2688 | http->flags.internal = 1; |
ba26bca4 | 2689 | } |
2690 | } | |
2691 | } | |
1f38f50a | 2692 | /* |
2693 | * cache the Content-length value in request_t. | |
2694 | */ | |
2695 | request->content_length = httpHeaderGetInt(&request->header, | |
2696 | HDR_CONTENT_LENGTH); | |
c68e9c6b | 2697 | request->flags.internal = http->flags.internal; |
13f11a4a | 2698 | safe_free(prefix); |
23d92c64 | 2699 | safe_free(http->log_uri); |
2700 | http->log_uri = xstrdup(urlCanonicalClean(request)); | |
7a2f978b | 2701 | request->client_addr = conn->peer.sin_addr; |
3c11d1f5 | 2702 | request->my_addr = conn->me.sin_addr; |
7e3ce7b9 | 2703 | request->my_port = ntohs(conn->me.sin_port); |
7a2f978b | 2704 | request->http_ver = http->http_ver; |
7a2f978b | 2705 | if (!urlCheckRequest(request)) { |
2706 | err = errorCon(ERR_UNSUP_REQ, HTTP_NOT_IMPLEMENTED); | |
2707 | err->src_addr = conn->peer.sin_addr; | |
7a2f978b | 2708 | err->request = requestLink(request); |
df4ba4bf | 2709 | request->flags.proxy_keepalive = 0; |
7a2f978b | 2710 | http->al.http.code = err->http_status; |
92695e5e | 2711 | http->entry = clientCreateStoreEntry(http, request->method, null_request_flags); |
79e0dc20 | 2712 | errorAppendEntry(http->entry, err); |
3775d53c | 2713 | break; |
7a2f978b | 2714 | } |
94439e4e | 2715 | if (!clientCheckContentLength(request)) { |
db93e79c | 2716 | err = errorCon(ERR_INVALID_REQ, HTTP_LENGTH_REQUIRED); |
31be8b80 | 2717 | err->src_addr = conn->peer.sin_addr; |
2718 | err->request = requestLink(request); | |
2719 | http->al.http.code = err->http_status; | |
92695e5e | 2720 | http->entry = clientCreateStoreEntry(http, request->method, null_request_flags); |
31be8b80 | 2721 | errorAppendEntry(http->entry, err); |
2722 | break; | |
2723 | } | |
7a2f978b | 2724 | http->request = requestLink(request); |
c68e9c6b | 2725 | clientSetKeepaliveFlag(http); |
94439e4e | 2726 | /* Do we expect a request-body? */ |
2727 | if (request->content_length > 0) { | |
2728 | conn->body.size_left = request->content_length; | |
2729 | request->body_connection = conn; | |
2730 | /* Is it too large? */ | |
2731 | if (clientRequestBodyTooLarge(request->content_length)) { | |
321e06a6 | 2732 | err = errorCon(ERR_TOO_BIG, HTTP_REQUEST_ENTITY_TOO_LARGE); |
0483b991 | 2733 | err->request = requestLink(request); |
2734 | http->entry = clientCreateStoreEntry(http, | |
2735 | METHOD_NONE, null_request_flags); | |
2736 | errorAppendEntry(http->entry, err); | |
2737 | break; | |
2738 | } | |
7a2f978b | 2739 | } |
2aecf121 | 2740 | clientAccessCheck(http); |
94439e4e | 2741 | continue; /* while offset > 0 && body.size_left == 0 */ |
7a2f978b | 2742 | } else if (parser_return_code == 0) { |
2743 | /* | |
2744 | * Partial request received; reschedule until parseHttpRequest() | |
2745 | * is happy with the input | |
2746 | */ | |
2747 | k = conn->in.size - 1 - conn->in.offset; | |
2748 | if (k == 0) { | |
0483b991 | 2749 | if (conn->in.offset >= Config.maxRequestHeaderSize) { |
7a2f978b | 2750 | /* The request is too large to handle */ |
7e3ce7b9 | 2751 | debug(33, 1) ("Request header is too large (%d bytes)\n", |
5f6ac48b | 2752 | (int) conn->in.offset); |
1f38f50a | 2753 | debug(33, 1) ("Config 'request_header_max_size'= %d bytes.\n", |
2754 | Config.maxRequestHeaderSize); | |
db93e79c | 2755 | err = errorCon(ERR_TOO_BIG, HTTP_REQUEST_ENTITY_TOO_LARGE); |
e42d5181 | 2756 | http = parseHttpRequestAbort(conn, "error:request-too-large"); |
2757 | /* add to the client request queue */ | |
2758 | for (H = &conn->chr; *H; H = &(*H)->next); | |
2759 | *H = http; | |
2760 | http->entry = clientCreateStoreEntry(http, METHOD_NONE, null_request_flags); | |
79e0dc20 | 2761 | errorAppendEntry(http->entry, err); |
7a2f978b | 2762 | return; |
2763 | } | |
2764 | /* Grow the request memory area to accomodate for a large request */ | |
58cd5bbd | 2765 | conn->in.size += CLIENT_REQ_BUF_SZ; |
2766 | if (conn->in.size == 2 * CLIENT_REQ_BUF_SZ) { | |
2767 | p = conn->in.buf; /* get rid of fixed size Pooled buffer */ | |
2768 | conn->in.buf = xcalloc(2, CLIENT_REQ_BUF_SZ); | |
2769 | xmemcpy(conn->in.buf, p, CLIENT_REQ_BUF_SZ); | |
2770 | memFree(p, MEM_CLIENT_REQ_BUF); | |
2771 | } else | |
2772 | conn->in.buf = xrealloc(conn->in.buf, conn->in.size); | |
59c4d35b | 2773 | /* XXX account conn->in.buf */ |
badd8ff0 | 2774 | debug(33, 3) ("Handling a large request, offset=%d inbufsize=%d\n", |
5f6ac48b | 2775 | (int) conn->in.offset, conn->in.size); |
7a2f978b | 2776 | k = conn->in.size - 1 - conn->in.offset; |
2777 | } | |
7a2f978b | 2778 | break; |
7a2f978b | 2779 | } |
94439e4e | 2780 | } /* while offset > 0 && conn->body.size_left == 0 */ |
2781 | /* Check if a half-closed connection was aborted in the middle */ | |
2782 | if (F->flags.socket_eof) { | |
2783 | if (conn->in.offset != conn->body.size_left) { /* != 0 when no request body */ | |
2784 | /* Partial request received. Abort client connection! */ | |
2785 | debug(33, 3) ("clientReadRequest: FD %d aborted\n", fd); | |
2786 | comm_close(fd); | |
2787 | return; | |
2788 | } | |
2789 | } | |
2790 | } | |
2791 | ||
2792 | /* file_read like function, for reading body content */ | |
2793 | void | |
2794 | clientReadBody(request_t * request, char *buf, size_t size, CBCB * callback, void *cbdata) | |
2795 | { | |
2796 | ConnStateData *conn = request->body_connection; | |
2797 | if (!conn) { | |
2798 | debug(33, 5) ("clientReadBody: no body to read, request=%p\n", request); | |
2799 | callback(buf, 0, cbdata); /* Signal end of body */ | |
2800 | return; | |
7a2f978b | 2801 | } |
94439e4e | 2802 | debug(33, 2) ("clientReadBody: start fd=%d body_size=%d in.offset=%d cb=%p req=%p\n", conn->fd, conn->body.size_left, conn->in.offset, callback, request); |
2803 | conn->body.callback = callback; | |
2804 | conn->body.cbdata = cbdata; | |
2805 | conn->body.buf = buf; | |
2806 | conn->body.bufsize = size; | |
2807 | conn->body.request = requestLink(request); | |
2808 | if (conn->in.offset) { | |
2809 | /* Data available */ | |
2810 | clientProcessBody(conn); | |
2811 | } else { | |
2812 | debug(33, 2) ("clientReadBody: fd %d wait for clientReadRequest\n", conn->fd); | |
2813 | } | |
2814 | } | |
2815 | ||
2816 | /* Called by clientReadRequest to process body content */ | |
2817 | static void | |
2818 | clientProcessBody(ConnStateData * conn) | |
2819 | { | |
2820 | int size; | |
2821 | char *buf = conn->body.buf; | |
2822 | void *cbdata = conn->body.cbdata; | |
2823 | CBCB *callback = conn->body.callback; | |
2824 | request_t *request = conn->body.request; | |
2825 | /* Note: request is null while eating "aborted" transfers */ | |
2826 | debug(33, 2) ("clientProcessBody: start fd=%d body_size=%d in.offset=%d cb=%p req=%p\n", conn->fd, conn->body.size_left, conn->in.offset, callback, request); | |
2827 | /* Some sanity checks... */ | |
2828 | assert(conn->body.size_left > 0); | |
2829 | assert(conn->in.offset > 0); | |
2830 | assert(callback != NULL); | |
2831 | assert(buf != NULL); | |
2832 | /* How much do we have to process? */ | |
2833 | size = conn->in.offset; | |
2834 | if (size > conn->body.size_left) /* only process the body part */ | |
2835 | size = conn->body.size_left; | |
2836 | if (size > conn->body.bufsize) /* don't copy more than requested */ | |
2837 | size = conn->body.bufsize; | |
2838 | xmemcpy(buf, conn->in.buf, size); | |
2839 | conn->body.size_left -= size; | |
2840 | /* Move any remaining data */ | |
2841 | conn->in.offset -= size; | |
2842 | if (conn->in.offset > 0) | |
2843 | xmemmove(conn->in.buf, conn->in.buf + size, conn->in.offset); | |
2844 | /* Remove request link if this is the last part of the body, as | |
2845 | * clientReadRequest automatically continues to process next request */ | |
2846 | if (conn->body.size_left <= 0 && request != NULL) | |
2847 | request->body_connection = NULL; | |
2848 | /* Remove clientReadBody arguments (the call is completed) */ | |
2849 | conn->body.request = NULL; | |
2850 | conn->body.callback = NULL; | |
2851 | conn->body.buf = NULL; | |
2852 | conn->body.bufsize = 0; | |
2853 | /* Remember that we have touched the body, not restartable */ | |
2854 | if (request != NULL) | |
2855 | request->flags.body_sent = 1; | |
2856 | /* Invoke callback function */ | |
2857 | callback(buf, size, cbdata); | |
2858 | if (request != NULL) | |
2859 | requestUnlink(request); /* Linked in clientReadBody */ | |
2860 | debug(33, 2) ("clientProcessBody: end fd=%d size=%d body_size=%d in.offset=%d cb=%p req=%p\n", conn->fd, size, conn->body.size_left, conn->in.offset, callback, request); | |
2861 | return; | |
2862 | } | |
2863 | ||
2864 | /* A dummy handler that throws away a request-body */ | |
2865 | static char bodyAbortBuf[SQUID_TCP_SO_RCVBUF]; | |
2866 | void | |
2867 | clientReadBodyAbortHandler(char *buf, size_t size, void *data) | |
2868 | { | |
2869 | ConnStateData *conn = (ConnStateData *) data; | |
2870 | debug(33, 2) ("clientReadBodyAbortHandler: fd=%d body_size=%d in.offset=%d\n", conn->fd, conn->body.size_left, conn->in.offset); | |
2871 | if (size != 0 && conn->body.size_left != 0) { | |
2872 | debug(33, 3) ("clientReadBodyAbortHandler: fd=%d shedule next read\n", conn->fd); | |
2873 | conn->body.callback = clientReadBodyAbortHandler; | |
2874 | conn->body.buf = bodyAbortBuf; | |
2875 | conn->body.bufsize = sizeof(bodyAbortBuf); | |
2876 | conn->body.cbdata = data; | |
2877 | } | |
2878 | } | |
2879 | ||
2880 | /* Abort a body request */ | |
2881 | int | |
2882 | clientAbortBody(request_t * request) | |
2883 | { | |
2884 | ConnStateData *conn = request->body_connection; | |
2885 | char *buf; | |
2886 | CBCB *callback; | |
2887 | void *cbdata; | |
2888 | request->body_connection = NULL; | |
2889 | if (!conn || conn->body.size_left <= 0) | |
2890 | return 0; /* No body to abort */ | |
2891 | if (conn->body.callback != NULL) { | |
2892 | buf = conn->body.buf; | |
2893 | callback = conn->body.callback; | |
2894 | cbdata = conn->body.cbdata; | |
2895 | assert(request == conn->body.request); | |
2896 | conn->body.buf = NULL; | |
2897 | conn->body.callback = NULL; | |
2898 | conn->body.cbdata = NULL; | |
2899 | conn->body.request = NULL; | |
2900 | callback(buf, -1, cbdata); /* Signal abort to clientReadBody caller */ | |
2901 | requestUnlink(request); | |
2902 | } | |
2903 | clientReadBodyAbortHandler(NULL, -1, conn); /* Install abort handler */ | |
2904 | /* clientProcessBody() */ | |
2905 | return 1; /* Aborted */ | |
7a2f978b | 2906 | } |
2907 | ||
2908 | /* general lifetime handler for HTTP requests */ | |
2909 | static void | |
2910 | requestTimeout(int fd, void *data) | |
2911 | { | |
ad63ceea | 2912 | #if THIS_CONFUSES_PERSISTENT_CONNECTION_AWARE_BROWSERS_AND_USERS |
7a2f978b | 2913 | ConnStateData *conn = data; |
2914 | ErrorState *err; | |
badd8ff0 | 2915 | debug(33, 3) ("requestTimeout: FD %d: lifetime is expired.\n", fd); |
7a2f978b | 2916 | if (fd_table[fd].rwstate) { |
79e0dc20 | 2917 | /* |
2918 | * Some data has been sent to the client, just close the FD | |
2919 | */ | |
7a2f978b | 2920 | comm_close(fd); |
2921 | } else if (conn->nrequests) { | |
79e0dc20 | 2922 | /* |
2923 | * assume its a persistent connection; just close it | |
2924 | */ | |
7a2f978b | 2925 | comm_close(fd); |
2926 | } else { | |
79e0dc20 | 2927 | /* |
2928 | * Generate an error | |
2929 | */ | |
7a2f978b | 2930 | err = errorCon(ERR_LIFETIME_EXP, HTTP_REQUEST_TIMEOUT); |
7a2f978b | 2931 | err->url = xstrdup("N/A"); |
79e0dc20 | 2932 | /* |
2933 | * Normally we shouldn't call errorSend() in client_side.c, but | |
2934 | * it should be okay in this case. Presumably if we get here | |
2935 | * this is the first request for the connection, and no data | |
2936 | * has been written yet | |
2937 | */ | |
2938 | assert(conn->chr == NULL); | |
7a2f978b | 2939 | errorSend(fd, err); |
79e0dc20 | 2940 | /* |
2941 | * if we don't close() here, we still need a timeout handler! | |
2942 | */ | |
7a2f978b | 2943 | commSetTimeout(fd, 30, requestTimeout, conn); |
7e3ce7b9 | 2944 | /* |
2945 | * Aha, but we don't want a read handler! | |
2946 | */ | |
2947 | commSetSelect(fd, COMM_SELECT_READ, NULL, NULL, 0); | |
7a2f978b | 2948 | } |
af57a2e3 | 2949 | #else |
2950 | /* | |
2951 | * Just close the connection to not confuse browsers | |
2952 | * using persistent connections. Some browsers opens | |
2953 | * an connection and then does not use it until much | |
2954 | * later (presumeably because the request triggering | |
2955 | * the open has already been completed on another | |
2956 | * connection) | |
2957 | */ | |
ad63ceea | 2958 | debug(33, 3) ("requestTimeout: FD %d: lifetime is expired.\n", fd); |
af57a2e3 | 2959 | comm_close(fd); |
2960 | #endif | |
7a2f978b | 2961 | } |
2962 | ||
b5c39993 | 2963 | static void |
2964 | clientLifetimeTimeout(int fd, void *data) | |
2965 | { | |
2966 | clientHttpRequest *http = data; | |
7ec87701 | 2967 | ConnStateData *conn = http->conn; |
b5c39993 | 2968 | debug(33, 1) ("WARNING: Closing client %s connection due to lifetime timeout\n", |
2969 | inet_ntoa(conn->peer.sin_addr)); | |
2970 | debug(33, 1) ("\t%s\n", http->uri); | |
2971 | comm_close(fd); | |
2972 | } | |
2973 | ||
ba4f8e5a | 2974 | static int |
d20b1cd0 | 2975 | httpAcceptDefer(int fdunused, void *dataunused) |
7a2f978b | 2976 | { |
3d6629c6 | 2977 | static time_t last_warn = 0; |
2978 | if (fdNFree() >= RESERVED_FD) | |
2979 | return 0; | |
2980 | if (last_warn + 15 < squid_curtime) { | |
2981 | debug(33, 0) ("WARNING! Your cache is running out of filedescriptors\n"); | |
2982 | last_warn = squid_curtime; | |
2983 | } | |
2984 | return 1; | |
7a2f978b | 2985 | } |
2986 | ||
bf8e5903 | 2987 | /* Handle a new connection on HTTP socket. */ |
7a2f978b | 2988 | void |
ba4f8e5a | 2989 | httpAccept(int sock, void *data) |
7a2f978b | 2990 | { |
ba4f8e5a | 2991 | int *N = data; |
7a2f978b | 2992 | int fd = -1; |
2993 | ConnStateData *connState = NULL; | |
2994 | struct sockaddr_in peer; | |
2995 | struct sockaddr_in me; | |
309ad3b6 | 2996 | int max = INCOMING_HTTP_MAX; |
3898f57f | 2997 | #if USE_IDENT |
a40699cd | 2998 | static aclCheck_t identChecklist; |
3898f57f | 2999 | #endif |
c411b98a | 3000 | commSetSelect(sock, COMM_SELECT_READ, httpAccept, NULL, 0); |
d20b1cd0 | 3001 | while (max-- && !httpAcceptDefer(sock, NULL)) { |
e2525655 | 3002 | memset(&peer, '\0', sizeof(struct sockaddr_in)); |
3003 | memset(&me, '\0', sizeof(struct sockaddr_in)); | |
e2525655 | 3004 | if ((fd = comm_accept(sock, &peer, &me)) < 0) { |
3005 | if (!ignoreErrno(errno)) | |
eeb423fb | 3006 | debug(50, 1) ("httpAccept: FD %d: accept failure: %s\n", |
e2525655 | 3007 | sock, xstrerror()); |
3008 | break; | |
3009 | } | |
3010 | debug(33, 4) ("httpAccept: FD %d: accepted\n", fd); | |
28c60158 | 3011 | connState = CBDATA_ALLOC(ConnStateData, NULL); |
e2525655 | 3012 | connState->peer = peer; |
3013 | connState->log_addr = peer.sin_addr; | |
3014 | connState->log_addr.s_addr &= Config.Addrs.client_netmask.s_addr; | |
3015 | connState->me = me; | |
3016 | connState->fd = fd; | |
58cd5bbd | 3017 | connState->in.size = CLIENT_REQ_BUF_SZ; |
3018 | connState->in.buf = memAllocate(MEM_CLIENT_REQ_BUF); | |
e2525655 | 3019 | /* XXX account connState->in.buf */ |
3020 | comm_add_close_handler(fd, connStateFree, connState); | |
3021 | if (Config.onoff.log_fqdn) | |
3022 | fqdncache_gethostbyaddr(peer.sin_addr, FQDN_LOOKUP_IF_MISS); | |
3023 | commSetTimeout(fd, Config.Timeout.request, requestTimeout, connState); | |
3898f57f | 3024 | #if USE_IDENT |
a40699cd | 3025 | identChecklist.src_addr = peer.sin_addr; |
b6a2f15e | 3026 | identChecklist.my_addr = me.sin_addr; |
7e3ce7b9 | 3027 | identChecklist.my_port = ntohs(me.sin_port); |
a40699cd | 3028 | if (aclCheckFast(Config.accessList.identLookup, &identChecklist)) |
05832ae1 | 3029 | identStart(&me, &peer, clientIdentDone, connState); |
3898f57f | 3030 | #endif |
e2525655 | 3031 | commSetSelect(fd, COMM_SELECT_READ, clientReadRequest, connState, 0); |
3032 | commSetDefer(fd, clientReadDefer, connState); | |
9bc73deb | 3033 | clientdbEstablished(peer.sin_addr, 1); |
41292f79 | 3034 | assert(N); |
ba4f8e5a | 3035 | (*N)++; |
7a2f978b | 3036 | } |
7a2f978b | 3037 | } |
3038 | ||
978e455f | 3039 | #define SENDING_BODY 0 |
3040 | #define SENDING_HDRSONLY 1 | |
7a2f978b | 3041 | static int |
1b02b5be | 3042 | clientCheckTransferDone(clientHttpRequest * http) |
7a2f978b | 3043 | { |
978e455f | 3044 | int sending = SENDING_BODY; |
7a2f978b | 3045 | StoreEntry *entry = http->entry; |
978e455f | 3046 | MemObject *mem; |
3047 | http_reply *reply; | |
3048 | int sendlen; | |
7a2f978b | 3049 | if (entry == NULL) |
3050 | return 0; | |
9f086470 | 3051 | /* |
3052 | * For now, 'done_copying' is used for special cases like | |
3053 | * Range and HEAD requests. | |
3054 | */ | |
3055 | if (http->flags.done_copying) | |
3056 | return 1; | |
978e455f | 3057 | /* |
b7fe0ab0 | 3058 | * Handle STORE_OK objects. |
07304bf9 | 3059 | * objectLen(entry) will be set proprely. |
978e455f | 3060 | */ |
b7fe0ab0 | 3061 | if (entry->store_status == STORE_OK) { |
07304bf9 | 3062 | if (http->out.offset >= objectLen(entry)) |
7a2f978b | 3063 | return 1; |
513f05a6 | 3064 | else |
3065 | return 0; | |
3066 | } | |
978e455f | 3067 | /* |
3068 | * Now, handle STORE_PENDING objects | |
3069 | */ | |
3070 | mem = entry->mem_obj; | |
3071 | assert(mem != NULL); | |
3072 | assert(http->request != NULL); | |
3073 | reply = mem->reply; | |
3074 | if (reply->hdr_sz == 0) | |
b34ed725 | 3075 | return 0; /* haven't found end of headers yet */ |
cb69b4c7 | 3076 | else if (reply->sline.status == HTTP_OK) |
b34ed725 | 3077 | sending = SENDING_BODY; |
cb69b4c7 | 3078 | else if (reply->sline.status == HTTP_NO_CONTENT) |
b34ed725 | 3079 | sending = SENDING_HDRSONLY; |
cb69b4c7 | 3080 | else if (reply->sline.status == HTTP_NOT_MODIFIED) |
b34ed725 | 3081 | sending = SENDING_HDRSONLY; |
cb69b4c7 | 3082 | else if (reply->sline.status < HTTP_OK) |
a3c60429 | 3083 | sending = SENDING_HDRSONLY; |
978e455f | 3084 | else if (http->request->method == METHOD_HEAD) |
b34ed725 | 3085 | sending = SENDING_HDRSONLY; |
978e455f | 3086 | else |
3087 | sending = SENDING_BODY; | |
3088 | /* | |
3089 | * Figure out how much data we are supposed to send. | |
3090 | * If we are sending a body and we don't have a content-length, | |
b7fe0ab0 | 3091 | * then we must wait for the object to become STORE_OK. |
978e455f | 3092 | */ |
3093 | if (sending == SENDING_HDRSONLY) | |
3094 | sendlen = reply->hdr_sz; | |
038eb4ed | 3095 | else if (reply->content_length < 0) |
978e455f | 3096 | return 0; |
3097 | else | |
038eb4ed | 3098 | sendlen = reply->content_length + reply->hdr_sz; |
978e455f | 3099 | /* |
3100 | * Now that we have the expected length, did we send it all? | |
3101 | */ | |
3102 | if (http->out.offset < sendlen) | |
3103 | return 0; | |
3104 | else | |
b34ed725 | 3105 | return 1; |
7a2f978b | 3106 | } |
3107 | ||
80980266 | 3108 | static int |
3109 | clientGotNotEnough(clientHttpRequest * http) | |
3110 | { | |
efd900cb | 3111 | int cl = httpReplyBodySize(http->request->method, http->entry->mem_obj->reply); |
80980266 | 3112 | int hs = http->entry->mem_obj->reply->hdr_sz; |
3113 | assert(cl >= 0); | |
3114 | if (http->out.offset < cl + hs) | |
3115 | return 1; | |
3116 | return 0; | |
3117 | } | |
3118 | ||
7a2f978b | 3119 | /* |
3120 | * This function is designed to serve a fairly specific purpose. | |
3121 | * Occasionally our vBNS-connected caches can talk to each other, but not | |
3122 | * the rest of the world. Here we try to detect frequent failures which | |
3123 | * make the cache unusable (e.g. DNS lookup and connect() failures). If | |
3124 | * the failure:success ratio goes above 1.0 then we go into "hit only" | |
3125 | * mode where we only return UDP_HIT or UDP_MISS_NOFETCH. Neighbors | |
3126 | * will only fetch HITs from us if they are using the ICP protocol. We | |
3127 | * stay in this mode for 5 minutes. | |
3128 | * | |
3129 | * Duane W., Sept 16, 1996 | |
3130 | */ | |
3131 | ||
3132 | static void | |
88aad2e5 | 3133 | checkFailureRatio(err_type etype, hier_code hcode) |
7a2f978b | 3134 | { |
88aad2e5 | 3135 | static double magic_factor = 100.0; |
7a2f978b | 3136 | double n_good; |
3137 | double n_bad; | |
3138 | if (hcode == HIER_NONE) | |
3139 | return; | |
88aad2e5 | 3140 | n_good = magic_factor / (1.0 + request_failure_ratio); |
7a2f978b | 3141 | n_bad = magic_factor - n_good; |
88aad2e5 | 3142 | switch (etype) { |
7a2f978b | 3143 | case ERR_DNS_FAIL: |
3144 | case ERR_CONNECT_FAIL: | |
3145 | case ERR_READ_ERROR: | |
3146 | n_bad++; | |
3147 | break; | |
3148 | default: | |
3149 | n_good++; | |
3150 | } | |
88aad2e5 | 3151 | request_failure_ratio = n_bad / n_good; |
7a2f978b | 3152 | if (hit_only_mode_until > squid_curtime) |
3153 | return; | |
88aad2e5 | 3154 | if (request_failure_ratio < 1.0) |
7a2f978b | 3155 | return; |
93f9abd0 | 3156 | debug(33, 0) ("Failure Ratio at %4.2f\n", request_failure_ratio); |
3157 | debug(33, 0) ("Going into hit-only-mode for %d minutes...\n", | |
7a2f978b | 3158 | FAILURE_MODE_TIME / 60); |
3159 | hit_only_mode_until = squid_curtime + FAILURE_MODE_TIME; | |
88aad2e5 | 3160 | request_failure_ratio = 0.8; /* reset to something less than 1.0 */ |
7a2f978b | 3161 | } |
15df8349 | 3162 | |
3163 | void | |
3164 | clientHttpConnectionsOpen(void) | |
3165 | { | |
7e3ce7b9 | 3166 | sockaddr_in_list *s; |
15df8349 | 3167 | int fd; |
7e3ce7b9 | 3168 | for (s = Config.Sockaddr.http; s; s = s->next) { |
42b51993 | 3169 | if (MAXHTTPPORTS == NHttpSockets) { |
3170 | debug(1, 1) ("WARNING: You have too many 'http_port' lines.\n"); | |
3171 | debug(1, 1) (" The limit is %d\n", MAXHTTPPORTS); | |
3172 | continue; | |
3173 | } | |
8daca701 | 3174 | enter_suid(); |
3175 | fd = comm_open(SOCK_STREAM, | |
3176 | 0, | |
7e3ce7b9 | 3177 | s->s.sin_addr, |
3178 | ntohs(s->s.sin_port), | |
8daca701 | 3179 | COMM_NONBLOCKING, |
3180 | "HTTP Socket"); | |
3181 | leave_suid(); | |
3182 | if (fd < 0) | |
3183 | continue; | |
3184 | comm_listen(fd); | |
3185 | commSetSelect(fd, COMM_SELECT_READ, httpAccept, NULL, 0); | |
d20b1cd0 | 3186 | /* |
3187 | * We need to set a defer handler here so that we don't | |
3188 | * peg the CPU with select() when we hit the FD limit. | |
3189 | */ | |
3190 | commSetDefer(fd, httpAcceptDefer, NULL); | |
7e3ce7b9 | 3191 | debug(1, 1) ("Accepting HTTP connections at %s, port %d, FD %d.\n", |
3192 | inet_ntoa(s->s.sin_addr), | |
3193 | (int) ntohs(s->s.sin_port), | |
3194 | fd); | |
8daca701 | 3195 | HttpSockets[NHttpSockets++] = fd; |
15df8349 | 3196 | } |
3197 | if (NHttpSockets < 1) | |
8daca701 | 3198 | fatal("Cannot open HTTP Port"); |
15df8349 | 3199 | } |
c0fbae16 | 3200 | |
3201 | void | |
3202 | clientHttpConnectionsClose(void) | |
3203 | { | |
3204 | int i; | |
3205 | for (i = 0; i < NHttpSockets; i++) { | |
3206 | if (HttpSockets[i] >= 0) { | |
3207 | debug(1, 1) ("FD %d Closing HTTP connection\n", HttpSockets[i]); | |
3208 | comm_close(HttpSockets[i]); | |
3209 | HttpSockets[i] = -1; | |
3210 | } | |
3211 | } | |
3212 | NHttpSockets = 0; | |
3213 | } |