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edce4d98 | 1 | |
2 | /* | |
4a7a3d56 | 3 | * $Id: client_side_reply.cc,v 1.122 2007/04/30 16:56:09 wessels Exp $ |
edce4d98 | 4 | * |
5 | * DEBUG: section 88 Client-side Reply Routines | |
6 | * AUTHOR: Robert Collins (Originally Duane Wessels in client_side.c) | |
7 | * | |
8 | * SQUID Web Proxy Cache http://www.squid-cache.org/ | |
9 | * ---------------------------------------------------------- | |
10 | * | |
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. | |
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 | |
32 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. | |
33 | * | |
34 | */ | |
35 | ||
36 | #include "squid.h" | |
0655fa4d | 37 | #include "client_side_reply.h" |
aa839030 | 38 | #include "errorpage.h" |
c8be6d7b | 39 | #include "StoreClient.h" |
e6ccf245 | 40 | #include "Store.h" |
528b2c61 | 41 | #include "HttpReply.h" |
42 | #include "HttpRequest.h" | |
b6b6f466 | 43 | #include "forward.h" |
e6ccf245 | 44 | |
c8be6d7b | 45 | #include "clientStream.h" |
f5691f9c | 46 | #include "AuthUserRequest.h" |
43ae1d95 | 47 | #if ESI |
48 | #include "ESI.h" | |
49 | #endif | |
5ef38a13 | 50 | #if ICAP_CLIENT_RESPMOD_POSTCACHE |
51 | #include "ICAPClient.h" | |
52 | #endif | |
528b2c61 | 53 | #include "MemObject.h" |
4fb35c3c | 54 | #include "ACLChecklist.h" |
b0dd28ba | 55 | #include "ACL.h" |
b67e2c8c | 56 | #if DELAY_POOLS |
57 | #include "DelayPools.h" | |
58 | #endif | |
a46d2c0e | 59 | #include "client_side.h" |
985c86bc | 60 | #include "SquidTime.h" |
e6ccf245 | 61 | |
0655fa4d | 62 | CBDATA_CLASS_INIT(clientReplyContext); |
edce4d98 | 63 | |
edce4d98 | 64 | /* Local functions */ |
e6ccf245 | 65 | extern "C" CSS clientReplyStatus; |
edce4d98 | 66 | extern ErrorState *clientBuildError(err_type, http_status, char const *, |
62e76326 | 67 | |
ddfcbc22 | 68 | struct IN_ADDR *, HttpRequest *); |
edce4d98 | 69 | |
edce4d98 | 70 | /* privates */ |
edce4d98 | 71 | |
0655fa4d | 72 | clientReplyContext::~clientReplyContext() |
edce4d98 | 73 | { |
50c09fc4 | 74 | deleting = true; |
75 | /* This may trigger a callback back into SendMoreData as the cbdata | |
76 | * is still valid | |
77 | */ | |
86a2f789 | 78 | removeClientStoreReference(&sc, http); |
edce4d98 | 79 | /* old_entry might still be set if we didn't yet get the reply |
0655fa4d | 80 | * code in HandleIMSReply() */ |
81 | removeStoreReference(&old_sc, &old_entry); | |
82 | safe_free(tempBuffer.data); | |
83 | cbdataReferenceDone(http); | |
2b7d324b | 84 | HTTPMSGUNLOCK(reply); |
edce4d98 | 85 | } |
86 | ||
59a1efb2 | 87 | clientReplyContext::clientReplyContext(ClientHttpRequest *clientContext) : http (cbdataReference(clientContext)), old_entry (NULL), old_sc(NULL), deleting(false) |
0655fa4d | 88 | {} |
edce4d98 | 89 | |
90 | /* create an error in the store awaiting the client side to read it. */ | |
0655fa4d | 91 | /* This may be better placed in the clientStream logic, but it has not been |
92 | * relocated there yet | |
93 | */ | |
edce4d98 | 94 | void |
0655fa4d | 95 | clientReplyContext::setReplyToError( |
96 | err_type err, http_status status, method_t method, char const *uri, | |
62e76326 | 97 | |
ddfcbc22 | 98 | struct IN_ADDR *addr, HttpRequest * failedrequest, char *unparsedrequest, |
0655fa4d | 99 | auth_user_request_t * auth_user_request) |
edce4d98 | 100 | { |
edce4d98 | 101 | ErrorState *errstate = |
62e76326 | 102 | clientBuildError(err, status, uri, addr, failedrequest); |
103 | ||
edce4d98 | 104 | if (unparsedrequest) |
62e76326 | 105 | errstate->request_hdrs = xstrdup(unparsedrequest); |
edce4d98 | 106 | |
0655fa4d | 107 | if (status == HTTP_NOT_IMPLEMENTED && http->request) |
62e76326 | 108 | /* prevent confusion over whether we default to persistent or not */ |
0655fa4d | 109 | http->request->flags.proxy_keepalive = 0; |
62e76326 | 110 | |
0655fa4d | 111 | http->al.http.code = errstate->httpStatus; |
edce4d98 | 112 | |
0655fa4d | 113 | createStoreEntry(method, request_flags()); |
62e76326 | 114 | |
115 | if (auth_user_request) | |
116 | { | |
117 | errstate->auth_user_request = auth_user_request; | |
f5691f9c | 118 | |
119 | errstate->auth_user_request->lock() | |
120 | ||
121 | ; | |
edce4d98 | 122 | } |
62e76326 | 123 | |
edce4d98 | 124 | assert(errstate->callback_data == NULL); |
86a2f789 | 125 | errorAppendEntry(http->storeEntry(), errstate); |
edce4d98 | 126 | /* Now the caller reads to get this */ |
127 | } | |
128 | ||
129 | void | |
0655fa4d | 130 | clientReplyContext::removeStoreReference(store_client ** scp, |
131 | StoreEntry ** ep) | |
edce4d98 | 132 | { |
133 | StoreEntry *e; | |
134 | store_client *sc = *scp; | |
62e76326 | 135 | |
edce4d98 | 136 | if ((e = *ep) != NULL) { |
62e76326 | 137 | *ep = NULL; |
0655fa4d | 138 | storeUnregister(sc, e, this); |
62e76326 | 139 | *scp = NULL; |
97b5e68f | 140 | e->unlock(); |
edce4d98 | 141 | } |
142 | } | |
143 | ||
86a2f789 | 144 | void |
145 | clientReplyContext::removeClientStoreReference(store_client **scp, ClientHttpRequest *http) | |
146 | { | |
147 | StoreEntry *reference = http->storeEntry(); | |
148 | removeStoreReference(scp, &reference); | |
149 | http->storeEntry(reference); | |
150 | } | |
151 | ||
e6ccf245 | 152 | void * |
a695955b | 153 | clientReplyContext::operator new (size_t byteCount) |
e6ccf245 | 154 | { |
155 | /* derived classes with different sizes must implement their own new */ | |
156 | assert (byteCount == sizeof (clientReplyContext)); | |
0655fa4d | 157 | CBDATA_INIT_TYPE(clientReplyContext); |
e6ccf245 | 158 | return cbdataAlloc(clientReplyContext); |
159 | } | |
160 | ||
161 | void | |
162 | clientReplyContext::operator delete (void *address) | |
163 | { | |
a50bfe93 | 164 | clientReplyContext * tmp = (clientReplyContext *)address; |
165 | cbdataFree (tmp); | |
e6ccf245 | 166 | } |
167 | ||
edce4d98 | 168 | void |
0655fa4d | 169 | clientReplyContext::saveState() |
edce4d98 | 170 | { |
e6ccf245 | 171 | assert(old_sc == NULL); |
bf8fe701 | 172 | debugs(88, 3, "clientReplyContext::saveState: saving store context"); |
86a2f789 | 173 | old_entry = http->storeEntry(); |
e6ccf245 | 174 | old_sc = sc; |
175 | old_reqsize = reqsize; | |
176 | tempBuffer.offset = reqofs; | |
edce4d98 | 177 | /* Prevent accessing the now saved entries */ |
86a2f789 | 178 | http->storeEntry(NULL); |
e6ccf245 | 179 | sc = NULL; |
180 | reqsize = 0; | |
181 | reqofs = 0; | |
edce4d98 | 182 | } |
183 | ||
184 | void | |
0655fa4d | 185 | clientReplyContext::restoreState() |
edce4d98 | 186 | { |
e6ccf245 | 187 | assert(old_sc != NULL); |
bf8fe701 | 188 | debugs(88, 3, "clientReplyContext::restoreState: Restoring store context"); |
86a2f789 | 189 | removeClientStoreReference(&sc, http); |
190 | http->storeEntry(old_entry); | |
e6ccf245 | 191 | sc = old_sc; |
192 | reqsize = old_reqsize; | |
193 | reqofs = tempBuffer.offset; | |
edce4d98 | 194 | /* Prevent accessed the old saved entries */ |
0655fa4d | 195 | old_entry = NULL; |
e6ccf245 | 196 | old_sc = NULL; |
197 | old_reqsize = 0; | |
198 | tempBuffer.offset = 0; | |
c8be6d7b | 199 | } |
200 | ||
201 | void | |
0655fa4d | 202 | clientReplyContext::startError(ErrorState * err) |
c8be6d7b | 203 | { |
0655fa4d | 204 | createStoreEntry(http->request->method, request_flags()); |
205 | triggerInitialStoreRead(); | |
86a2f789 | 206 | errorAppendEntry(http->storeEntry(), err); |
edce4d98 | 207 | } |
208 | ||
e6ccf245 | 209 | clientStreamNode * |
528b2c61 | 210 | clientReplyContext::getNextNode() const |
e6ccf245 | 211 | { |
62e76326 | 212 | return (clientStreamNode *)ourNode->node.next->data; |
e6ccf245 | 213 | } |
214 | ||
62e76326 | 215 | /* This function is wrong - the client parameters don't include the |
528b2c61 | 216 | * header offset |
217 | */ | |
c8be6d7b | 218 | void |
0655fa4d | 219 | clientReplyContext::triggerInitialStoreRead() |
c8be6d7b | 220 | { |
0655fa4d | 221 | /* when confident, 0 becomes reqofs, and then this factors into |
528b2c61 | 222 | * startSendProcess |
223 | */ | |
0655fa4d | 224 | assert(reqofs == 0); |
dd272b8e | 225 | StoreIOBuffer tempBuffer (next()->readBuffer.length, 0, next()->readBuffer.data); |
86a2f789 | 226 | storeClientCopy(sc, http->storeEntry(), tempBuffer, SendMoreData, this); |
c8be6d7b | 227 | } |
edce4d98 | 228 | |
229 | /* there is an expired entry in the store. | |
230 | * setup a temporary buffer area and perform an IMS to the origin | |
231 | */ | |
0655fa4d | 232 | void |
233 | clientReplyContext::processExpired() | |
edce4d98 | 234 | { |
edce4d98 | 235 | char *url = http->uri; |
236 | StoreEntry *entry = NULL; | |
bf8fe701 | 237 | debugs(88, 3, "clientReplyContext::processExpired: '" << http->uri << "'"); |
86a2f789 | 238 | assert(http->storeEntry()->lastmod >= 0); |
edce4d98 | 239 | /* |
240 | * check if we are allowed to contact other servers | |
241 | * @?@: Instead of a 504 (Gateway Timeout) reply, we may want to return | |
242 | * a stale entry *if* it matches client requirements | |
243 | */ | |
62e76326 | 244 | |
0655fa4d | 245 | if (http->onlyIfCached()) { |
246 | processOnlyIfCachedMiss(); | |
62e76326 | 247 | return; |
edce4d98 | 248 | } |
62e76326 | 249 | |
edce4d98 | 250 | http->request->flags.refresh = 1; |
251 | #if STORE_CLIENT_LIST_DEBUG | |
c8be6d7b | 252 | /* Prevent a race with the store client memory free routines |
edce4d98 | 253 | */ |
0655fa4d | 254 | assert(storeClientIsThisAClient(sc, this)); |
edce4d98 | 255 | #endif |
256 | /* Prepare to make a new temporary request */ | |
0655fa4d | 257 | saveState(); |
edce4d98 | 258 | entry = storeCreateEntry(url, |
62e76326 | 259 | http->log_uri, http->request->flags, http->request->method); |
34266cde | 260 | /* NOTE, don't call StoreEntry->lock(), storeCreateEntry() does it */ |
0655fa4d | 261 | sc = storeClientListAdd(entry, this); |
edce4d98 | 262 | #if DELAY_POOLS |
263 | /* delay_id is already set on original store client */ | |
0655fa4d | 264 | sc->setDelayId(DelayId::DelayClient(http)); |
edce4d98 | 265 | #endif |
62e76326 | 266 | |
0655fa4d | 267 | http->request->lastmod = old_entry->lastmod; |
4a7a3d56 | 268 | debugs(88, 5, "clientReplyContext::processExpired : lastmod " << entry->lastmod ); |
86a2f789 | 269 | http->storeEntry(entry); |
c8be6d7b | 270 | assert(http->out.offset == 0); |
b2d22df6 | 271 | |
272 | /* | |
273 | * A refcounted pointer so that FwdState stays around as long as | |
274 | * this clientReplyContext does | |
275 | */ | |
94a396a3 | 276 | FwdState::fwdStart(http->getConn() != NULL ? http->getConn()->fd : -1, |
be0c6690 | 277 | http->storeEntry(), |
278 | http->request); | |
edce4d98 | 279 | /* Register with storage manager to receive updates when data comes in. */ |
62e76326 | 280 | |
edce4d98 | 281 | if (EBIT_TEST(entry->flags, ENTRY_ABORTED)) |
bf8fe701 | 282 | debugs(88, 0, "clientReplyContext::processExpired: Found ENTRY_ABORTED object"); |
62e76326 | 283 | |
c8be6d7b | 284 | { |
62e76326 | 285 | /* start counting the length from 0 */ |
0655fa4d | 286 | StoreIOBuffer tempBuffer(HTTP_REQBUF_SZ, 0, tempbuf); |
287 | storeClientCopy(sc, entry, tempBuffer, HandleIMSReply, this); | |
edce4d98 | 288 | } |
289 | } | |
290 | ||
edce4d98 | 291 | |
528b2c61 | 292 | void |
293 | clientReplyContext::sendClientUpstreamResponse() | |
294 | { | |
295 | StoreIOBuffer tempresult; | |
0655fa4d | 296 | removeStoreReference(&old_sc, &old_entry); |
528b2c61 | 297 | /* here the data to send is the data we just recieved */ |
298 | tempBuffer.offset = 0; | |
299 | old_reqsize = 0; | |
0655fa4d | 300 | /* sendMoreData tracks the offset as well. |
528b2c61 | 301 | * Force it back to zero */ |
302 | reqofs = 0; | |
86a2f789 | 303 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 304 | /* TODO: provide sendMoreData with the ready parsed reply */ |
528b2c61 | 305 | tempresult.length = reqsize; |
306 | tempresult.data = tempbuf; | |
0655fa4d | 307 | sendMoreData(tempresult); |
528b2c61 | 308 | } |
309 | ||
edce4d98 | 310 | void |
0655fa4d | 311 | clientReplyContext::HandleIMSReply(void *data, StoreIOBuffer result) |
edce4d98 | 312 | { |
e6ccf245 | 313 | clientReplyContext *context = (clientReplyContext *)data; |
0655fa4d | 314 | context->handleIMSReply(result); |
315 | } | |
62e76326 | 316 | |
0655fa4d | 317 | void |
318 | clientReplyContext::sendClientOldEntry() | |
319 | { | |
320 | /* Get the old request back */ | |
321 | restoreState(); | |
322 | /* here the data to send is in the next nodes buffers already */ | |
86a2f789 | 323 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 324 | /* sendMoreData tracks the offset as well. |
325 | * Force it back to zero */ | |
326 | reqofs = 0; | |
327 | StoreIOBuffer tempresult (reqsize, reqofs, next()->readBuffer.data); | |
328 | sendMoreData(tempresult); | |
329 | } | |
62e76326 | 330 | |
1d7ab0f4 | 331 | /* This is the workhorse of the HandleIMSReply callback. |
332 | * | |
333 | * It is called when we've got data back from the origin following our | |
334 | * IMS request to revalidate a stale entry. | |
335 | */ | |
0655fa4d | 336 | void |
1d7ab0f4 | 337 | clientReplyContext::handleIMSReply(StoreIOBuffer result) |
0655fa4d | 338 | { |
1d7ab0f4 | 339 | if (deleting) |
340 | return; | |
62e76326 | 341 | |
bf8fe701 | 342 | debugs(88, 3, "handleIMSReply: " << http->storeEntry()->url() << ", " << (long unsigned) result.length << " bytes" ); |
62e76326 | 343 | |
1d7ab0f4 | 344 | if (http->storeEntry() == NULL) |
345 | return; | |
07947ad8 | 346 | |
1d7ab0f4 | 347 | if (result.flags.error && !EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) |
348 | return; | |
62e76326 | 349 | |
1d7ab0f4 | 350 | /* update size of the request */ |
351 | reqsize = result.length + reqofs; | |
62e76326 | 352 | |
1d7ab0f4 | 353 | const http_status status = http->storeEntry()->getReply()->sline.status; |
62e76326 | 354 | |
1d7ab0f4 | 355 | // request to origin was aborted |
356 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) { | |
bf8fe701 | 357 | debugs(88, 3, "handleIMSReply: request to origin aborted '" << http->storeEntry()->url() << "', sending old entry to client" ); |
1d7ab0f4 | 358 | http->logType = LOG_TCP_REFRESH_FAIL; |
359 | sendClientOldEntry(); | |
0655fa4d | 360 | } |
62e76326 | 361 | |
1d7ab0f4 | 362 | // we have a partial reply from the origin |
363 | else if (STORE_PENDING == http->storeEntry()->store_status && 0 == status) { | |
364 | // header is too large, send old entry | |
62e76326 | 365 | |
1d7ab0f4 | 366 | if (reqsize >= HTTP_REQBUF_SZ) { |
bf8fe701 | 367 | debugs(88, 3, "handleIMSReply: response from origin is too large '" << http->storeEntry()->url() << "', sending old entry to client" ); |
1d7ab0f4 | 368 | http->logType = LOG_TCP_REFRESH_FAIL; |
369 | sendClientOldEntry(); | |
0655fa4d | 370 | } |
62e76326 | 371 | |
1d7ab0f4 | 372 | // everything looks fine, we're just waiting for more data |
373 | else { | |
bf8fe701 | 374 | debugs(88, 3, "handleIMSReply: incomplete headers for '" << http->storeEntry()->url() << "', waiting for more data" ); |
1d7ab0f4 | 375 | reqofs = reqsize; |
376 | waitForMoreData(); | |
377 | } | |
0655fa4d | 378 | } |
62e76326 | 379 | |
1d7ab0f4 | 380 | // we have a reply from the origin |
381 | else { | |
382 | HttpReply *old_rep = (HttpReply *) old_entry->getReply(); | |
045a76ab | 383 | |
1d7ab0f4 | 384 | // origin replied 304 |
62e76326 | 385 | |
1d7ab0f4 | 386 | if (status == HTTP_NOT_MODIFIED) { |
387 | http->logType = LOG_TCP_REFRESH_UNMODIFIED; | |
62e76326 | 388 | |
1d7ab0f4 | 389 | // update headers on existing entry |
390 | HttpReply *old_rep = (HttpReply *) old_entry->getReply(); | |
391 | old_rep->updateOnNotModified(http->storeEntry()->getReply()); | |
3900307b | 392 | old_entry->timestampsSet(); |
62e76326 | 393 | |
1d7ab0f4 | 394 | // if client sent IMS |
395 | ||
396 | if (http->request->flags.ims) { | |
397 | // forward the 304 from origin | |
bf8fe701 | 398 | debugs(88, 3, "handleIMSReply: origin replied 304, revalidating existing entry and forwarding 304 to client"); |
1d7ab0f4 | 399 | sendClientUpstreamResponse(); |
400 | } else { | |
401 | // send existing entry, it's still valid | |
bf8fe701 | 402 | debugs(88, 3, "handleIMSReply: origin replied 304, revalidating existing entry and sending " << |
403 | old_rep->sline.status << " to client"); | |
1d7ab0f4 | 404 | sendClientOldEntry(); |
405 | } | |
406 | } | |
62e76326 | 407 | |
1d7ab0f4 | 408 | // origin replied with a non-error code |
409 | else if (status > HTTP_STATUS_NONE && status < HTTP_INTERNAL_SERVER_ERROR) { | |
410 | // forward response from origin | |
411 | http->logType = LOG_TCP_REFRESH_MODIFIED; | |
bf8fe701 | 412 | debugs(88, 3, "handleIMSReply: origin replied " << status << ", replacing existing entry and forwarding to client"); |
1d7ab0f4 | 413 | sendClientUpstreamResponse(); |
414 | } | |
62e76326 | 415 | |
1d7ab0f4 | 416 | // origin replied with an error |
417 | else { | |
418 | // ignore and let client have old entry | |
419 | http->logType = LOG_TCP_REFRESH_FAIL; | |
bf8fe701 | 420 | debugs(88, 3, "handleIMSReply: origin replied with error " << |
421 | status << ", sending old entry (" << old_rep->sline.status << ") to client"); | |
1d7ab0f4 | 422 | sendClientOldEntry(); |
423 | } | |
424 | } | |
edce4d98 | 425 | } |
426 | ||
e6ccf245 | 427 | extern "C" CSR clientGetMoreData; |
428 | extern "C" CSD clientReplyDetach; | |
edce4d98 | 429 | |
430 | /* | |
431 | * clientCacheHit should only be called until the HTTP reply headers | |
432 | * have been parsed. Normally this should be a single call, but | |
433 | * it might take more than one. As soon as we have the headers, | |
0655fa4d | 434 | * we hand off to clientSendMoreData, processExpired, or |
435 | * processMiss. | |
edce4d98 | 436 | */ |
437 | void | |
0655fa4d | 438 | clientReplyContext::CacheHit(void *data, StoreIOBuffer result) |
edce4d98 | 439 | { |
e6ccf245 | 440 | clientReplyContext *context = (clientReplyContext *)data; |
0655fa4d | 441 | context->cacheHit (result); |
442 | } | |
443 | ||
444 | void | |
445 | clientReplyContext::cacheHit(StoreIOBuffer result) | |
446 | { | |
045a76ab | 447 | if (deleting) |
448 | return; | |
449 | ||
86a2f789 | 450 | StoreEntry *e = http->storeEntry(); |
045a76ab | 451 | |
190154cf | 452 | HttpRequest *r = http->request; |
045a76ab | 453 | |
4a7a3d56 | 454 | debugs(88, 3, "clientCacheHit: " << http->uri << ", " << result.length << " bytes"); |
62e76326 | 455 | |
86a2f789 | 456 | if (http->storeEntry() == NULL) { |
bf8fe701 | 457 | debugs(88, 3, "clientCacheHit: request aborted"); |
62e76326 | 458 | return; |
c8be6d7b | 459 | } else if (result.flags.error) { |
62e76326 | 460 | /* swap in failure */ |
bf8fe701 | 461 | debugs(88, 3, "clientCacheHit: swapin failure for " << http->uri); |
62e76326 | 462 | http->logType = LOG_TCP_SWAPFAIL_MISS; |
86a2f789 | 463 | removeClientStoreReference(&sc, http); |
0655fa4d | 464 | processMiss(); |
62e76326 | 465 | return; |
edce4d98 | 466 | } |
62e76326 | 467 | |
d3b3ab85 | 468 | if (result.length == 0) { |
62e76326 | 469 | /* the store couldn't get enough data from the file for us to id the |
470 | * object | |
471 | */ | |
472 | /* treat as a miss */ | |
473 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 474 | processMiss(); |
62e76326 | 475 | return; |
d3b3ab85 | 476 | } |
62e76326 | 477 | |
edce4d98 | 478 | assert(!EBIT_TEST(e->flags, ENTRY_ABORTED)); |
479 | /* update size of the request */ | |
0655fa4d | 480 | reqsize = result.length + reqofs; |
62e76326 | 481 | |
528b2c61 | 482 | if (e->getReply()->sline.status == 0) { |
62e76326 | 483 | /* |
484 | * we don't have full reply headers yet; either wait for more or | |
485 | * punt to clientProcessMiss. | |
486 | */ | |
487 | ||
488 | if (e->mem_status == IN_MEMORY || e->store_status == STORE_OK) { | |
0655fa4d | 489 | processMiss(); |
490 | } else if (result.length + reqofs >= HTTP_REQBUF_SZ | |
62e76326 | 491 | && http->out.offset == 0) { |
0655fa4d | 492 | processMiss(); |
62e76326 | 493 | } else { |
bf8fe701 | 494 | debugs(88, 3, "clientCacheHit: waiting for HTTP reply headers"); |
0655fa4d | 495 | reqofs += result.length; |
496 | assert(reqofs <= HTTP_REQBUF_SZ); | |
62e76326 | 497 | /* get the next users' buffer */ |
0655fa4d | 498 | StoreIOBuffer tempBuffer; |
499 | tempBuffer.offset = http->out.offset + reqofs; | |
500 | tempBuffer.length = next()->readBuffer.length - reqofs; | |
501 | tempBuffer.data = next()->readBuffer.data + reqofs; | |
502 | storeClientCopy(sc, e, | |
503 | tempBuffer, CacheHit, this); | |
62e76326 | 504 | } |
505 | ||
506 | return; | |
edce4d98 | 507 | } |
62e76326 | 508 | |
edce4d98 | 509 | /* |
510 | * Got the headers, now grok them | |
511 | */ | |
29b8d8d6 | 512 | assert(http->logType == LOG_TCP_HIT); |
62e76326 | 513 | |
edce4d98 | 514 | switch (varyEvaluateMatch(e, r)) { |
62e76326 | 515 | |
edce4d98 | 516 | case VARY_NONE: |
62e76326 | 517 | /* No variance detected. Continue as normal */ |
518 | break; | |
519 | ||
edce4d98 | 520 | case VARY_MATCH: |
62e76326 | 521 | /* This is the correct entity for this request. Continue */ |
bf8fe701 | 522 | debugs(88, 2, "clientProcessHit: Vary MATCH!"); |
62e76326 | 523 | break; |
524 | ||
edce4d98 | 525 | case VARY_OTHER: |
62e76326 | 526 | /* This is not the correct entity for this request. We need |
527 | * to requery the cache. | |
528 | */ | |
86a2f789 | 529 | removeClientStoreReference(&sc, http); |
62e76326 | 530 | e = NULL; |
531 | /* Note: varyEvalyateMatch updates the request with vary information | |
532 | * so we only get here once. (it also takes care of cancelling loops) | |
533 | */ | |
bf8fe701 | 534 | debugs(88, 2, "clientProcessHit: Vary detected!"); |
0655fa4d | 535 | clientGetMoreData(ourNode, http); |
62e76326 | 536 | return; |
537 | ||
edce4d98 | 538 | case VARY_CANCEL: |
62e76326 | 539 | /* varyEvaluateMatch found a object loop. Process as miss */ |
bf8fe701 | 540 | debugs(88, 1, "clientProcessHit: Vary object loop!"); |
0655fa4d | 541 | processMiss(); |
62e76326 | 542 | return; |
edce4d98 | 543 | } |
62e76326 | 544 | |
edce4d98 | 545 | if (r->method == METHOD_PURGE) { |
86a2f789 | 546 | removeClientStoreReference(&sc, http); |
62e76326 | 547 | e = NULL; |
0655fa4d | 548 | purgeRequest(); |
62e76326 | 549 | return; |
edce4d98 | 550 | } |
62e76326 | 551 | |
3900307b | 552 | if (e->checkNegativeHit() |
36e6655b | 553 | #if HTTP_VIOLATIONS |
554 | && !r->flags.nocache_hack | |
555 | #endif | |
556 | ) { | |
62e76326 | 557 | http->logType = LOG_TCP_NEGATIVE_HIT; |
0655fa4d | 558 | sendMoreData(result); |
f7cf9b8c | 559 | } else if (!Config.onoff.offline && refreshCheckHTTP(e, r) && !http->flags.internal) { |
bf8fe701 | 560 | debugs(88, 5, "clientCacheHit: in refreshCheck() block"); |
62e76326 | 561 | /* |
562 | * We hold a stale copy; it needs to be validated | |
563 | */ | |
564 | /* | |
565 | * The 'need_validation' flag is used to prevent forwarding | |
566 | * loops between siblings. If our copy of the object is stale, | |
567 | * then we should probably only use parents for the validation | |
568 | * request. Otherwise two siblings could generate a loop if | |
569 | * both have a stale version of the object. | |
570 | */ | |
571 | r->flags.need_validation = 1; | |
572 | ||
573 | if (e->lastmod < 0) { | |
574 | /* | |
575 | * Previous reply didn't have a Last-Modified header, | |
576 | * we cannot revalidate it. | |
577 | */ | |
578 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 579 | processMiss(); |
62e76326 | 580 | } else if (r->flags.nocache) { |
581 | /* | |
582 | * This did not match a refresh pattern that overrides no-cache | |
583 | * we should honour the client no-cache header. | |
584 | */ | |
585 | http->logType = LOG_TCP_CLIENT_REFRESH_MISS; | |
0655fa4d | 586 | processMiss(); |
62e76326 | 587 | } else if (r->protocol == PROTO_HTTP) { |
588 | /* | |
589 | * Object needs to be revalidated | |
590 | * XXX This could apply to FTP as well, if Last-Modified is known. | |
591 | */ | |
0655fa4d | 592 | processExpired(); |
62e76326 | 593 | } else { |
594 | /* | |
595 | * We don't know how to re-validate other protocols. Handle | |
596 | * them as if the object has expired. | |
597 | */ | |
598 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 599 | processMiss(); |
62e76326 | 600 | } |
edce4d98 | 601 | } else if (r->flags.ims) { |
62e76326 | 602 | /* |
603 | * Handle If-Modified-Since requests from the client | |
604 | */ | |
605 | ||
606 | if (e->getReply()->sline.status != HTTP_OK) { | |
bf8fe701 | 607 | debugs(88, 4, "clientCacheHit: Reply code " << |
608 | e->getReply()->sline.status << " != 200"); | |
62e76326 | 609 | http->logType = LOG_TCP_MISS; |
0655fa4d | 610 | processMiss(); |
611 | } else if (e->modifiedSince(http->request)) { | |
62e76326 | 612 | http->logType = LOG_TCP_IMS_HIT; |
0655fa4d | 613 | sendMoreData(result); |
62e76326 | 614 | } else { |
0655fa4d | 615 | time_t const timestamp = e->timestamp; |
06a5ae20 | 616 | HttpReply *temprep = e->getReply()->make304(); |
62e76326 | 617 | http->logType = LOG_TCP_IMS_HIT; |
86a2f789 | 618 | removeClientStoreReference(&sc, http); |
0655fa4d | 619 | createStoreEntry(http->request->method, |
620 | request_flags()); | |
86a2f789 | 621 | e = http->storeEntry(); |
62e76326 | 622 | /* |
623 | * Copy timestamp from the original entry so the 304 | |
624 | * reply has a meaningful Age: header. | |
625 | */ | |
626 | e->timestamp = timestamp; | |
db237875 | 627 | e->replaceHttpReply(temprep); |
62e76326 | 628 | e->complete(); |
629 | /* TODO: why put this in the store and then serialise it and then parse it again. | |
630 | * Simply mark the request complete in our context and | |
631 | * write the reply struct to the client side | |
632 | */ | |
0655fa4d | 633 | triggerInitialStoreRead(); |
62e76326 | 634 | } |
edce4d98 | 635 | } else { |
62e76326 | 636 | /* |
637 | * plain ol' cache hit | |
638 | */ | |
639 | ||
ffdf45f2 | 640 | if (e->store_status != STORE_OK) |
849b826a | 641 | http->logType = LOG_TCP_MISS; |
ffdf45f2 | 642 | else if (e->mem_status == IN_MEMORY) |
62e76326 | 643 | http->logType = LOG_TCP_MEM_HIT; |
644 | else if (Config.onoff.offline) | |
645 | http->logType = LOG_TCP_OFFLINE_HIT; | |
646 | ||
0655fa4d | 647 | sendMoreData(result); |
edce4d98 | 648 | } |
649 | } | |
650 | ||
651 | /* | |
652 | * Prepare to fetch the object as it's a cache miss of some kind. | |
653 | */ | |
654 | void | |
0655fa4d | 655 | clientReplyContext::processMiss() |
edce4d98 | 656 | { |
edce4d98 | 657 | char *url = http->uri; |
190154cf | 658 | HttpRequest *r = http->request; |
edce4d98 | 659 | ErrorState *err = NULL; |
bf8fe701 | 660 | debugs(88, 4, "clientProcessMiss: '" << RequestMethodStr[r->method] << " " << url << "'"); |
edce4d98 | 661 | /* |
662 | * We might have a left-over StoreEntry from a failed cache hit | |
663 | * or IMS request. | |
664 | */ | |
62e76326 | 665 | |
86a2f789 | 666 | if (http->storeEntry()) { |
667 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_SPECIAL)) { | |
bf8fe701 | 668 | debugs(88, 0, "clientProcessMiss: miss on a special object (" << url << ")."); |
669 | debugs(88, 0, "\tlog_type = " << log_tags[http->logType]); | |
3900307b | 670 | http->storeEntry()->dump(1); |
62e76326 | 671 | } |
672 | ||
86a2f789 | 673 | removeClientStoreReference(&sc, http); |
edce4d98 | 674 | } |
62e76326 | 675 | |
edce4d98 | 676 | if (r->method == METHOD_PURGE) { |
0655fa4d | 677 | purgeRequest(); |
62e76326 | 678 | return; |
edce4d98 | 679 | } |
62e76326 | 680 | |
0655fa4d | 681 | if (http->onlyIfCached()) { |
682 | processOnlyIfCachedMiss(); | |
62e76326 | 683 | return; |
edce4d98 | 684 | } |
62e76326 | 685 | |
edce4d98 | 686 | /* |
687 | * Deny loops when running in accelerator/transproxy mode. | |
688 | */ | |
689 | if (http->flags.accel && r->flags.loopdetect) { | |
62e76326 | 690 | http->al.http.code = HTTP_FORBIDDEN; |
691 | err = | |
692 | clientBuildError(ERR_ACCESS_DENIED, HTTP_FORBIDDEN, NULL, | |
98242069 | 693 | &http->getConn()->peer.sin_addr, http->request); |
0655fa4d | 694 | createStoreEntry(r->method, request_flags()); |
86a2f789 | 695 | errorAppendEntry(http->storeEntry(), err); |
0655fa4d | 696 | triggerInitialStoreRead(); |
62e76326 | 697 | return; |
edce4d98 | 698 | } else { |
62e76326 | 699 | assert(http->out.offset == 0); |
0655fa4d | 700 | createStoreEntry(r->method, r->flags); |
701 | triggerInitialStoreRead(); | |
62e76326 | 702 | |
703 | if (http->redirect.status) { | |
06a5ae20 | 704 | HttpReply *rep = new HttpReply; |
edce4d98 | 705 | #if LOG_TCP_REDIRECTS |
62e76326 | 706 | |
707 | http->logType = LOG_TCP_REDIRECT; | |
edce4d98 | 708 | #endif |
62e76326 | 709 | |
d88e3c49 | 710 | http->storeEntry()->releaseRequest(); |
06a5ae20 | 711 | rep->redirect(http->redirect.status, http->redirect.location); |
db237875 | 712 | http->storeEntry()->replaceHttpReply(rep); |
86a2f789 | 713 | http->storeEntry()->complete(); |
62e76326 | 714 | return; |
715 | } | |
716 | ||
717 | if (http->flags.internal) | |
718 | r->protocol = PROTO_INTERNAL; | |
719 | ||
94a396a3 | 720 | FwdState::fwdStart(http->getConn() != NULL ? http->getConn()->fd : -1, |
be0c6690 | 721 | http->storeEntry(), |
722 | r); | |
edce4d98 | 723 | } |
724 | } | |
725 | ||
726 | /* | |
727 | * client issued a request with an only-if-cached cache-control directive; | |
728 | * we did not find a cached object that can be returned without | |
729 | * contacting other servers; | |
730 | * respond with a 504 (Gateway Timeout) as suggested in [RFC 2068] | |
731 | */ | |
0655fa4d | 732 | void |
733 | clientReplyContext::processOnlyIfCachedMiss() | |
edce4d98 | 734 | { |
edce4d98 | 735 | ErrorState *err = NULL; |
bf8fe701 | 736 | debugs(88, 4, "clientProcessOnlyIfCachedMiss: '" << |
737 | RequestMethodStr[http->request->method] << " " << http->uri << "'"); | |
edce4d98 | 738 | http->al.http.code = HTTP_GATEWAY_TIMEOUT; |
739 | err = clientBuildError(ERR_ONLY_IF_CACHED_MISS, HTTP_GATEWAY_TIMEOUT, NULL, | |
98242069 | 740 | &http->getConn()->peer.sin_addr, http->request); |
86a2f789 | 741 | removeClientStoreReference(&sc, http); |
0655fa4d | 742 | startError(err); |
edce4d98 | 743 | } |
744 | ||
745 | void | |
e6ccf245 | 746 | clientReplyContext::purgeRequestFindObjectToPurge() |
747 | { | |
748 | /* Try to find a base entry */ | |
749 | http->flags.purging = 1; | |
750 | lookingforstore = 1; | |
3b13a8fd | 751 | StoreEntry::getPublicByRequestMethod(this, http->request, METHOD_GET); |
e6ccf245 | 752 | } |
753 | ||
754 | void | |
3b13a8fd | 755 | clientReplyContext::created(StoreEntry *newEntry) |
e6ccf245 | 756 | { |
757 | if (lookingforstore == 1) | |
62e76326 | 758 | purgeFoundGet(newEntry); |
e6ccf245 | 759 | else if (lookingforstore == 2) |
62e76326 | 760 | purgeFoundHead(newEntry); |
e6ccf245 | 761 | else if (lookingforstore == 3) |
62e76326 | 762 | purgeDoPurgeGet(newEntry); |
e6ccf245 | 763 | else if (lookingforstore == 4) |
62e76326 | 764 | purgeDoPurgeHead(newEntry); |
e6ccf245 | 765 | else if (lookingforstore == 5) |
62e76326 | 766 | identifyFoundObject(newEntry); |
e6ccf245 | 767 | } |
768 | ||
769 | void | |
3b13a8fd | 770 | clientReplyContext::purgeFoundGet(StoreEntry *newEntry) |
e6ccf245 | 771 | { |
772 | if (newEntry->isNull()) { | |
62e76326 | 773 | lookingforstore = 2; |
774 | StoreEntry::getPublicByRequestMethod(this, http->request, METHOD_HEAD); | |
e6ccf245 | 775 | } else |
62e76326 | 776 | purgeFoundObject (newEntry); |
e6ccf245 | 777 | } |
778 | ||
779 | void | |
3b13a8fd | 780 | clientReplyContext::purgeFoundHead(StoreEntry *newEntry) |
e6ccf245 | 781 | { |
782 | if (newEntry->isNull()) | |
62e76326 | 783 | purgeDoMissPurge(); |
e6ccf245 | 784 | else |
62e76326 | 785 | purgeFoundObject (newEntry); |
e6ccf245 | 786 | } |
62e76326 | 787 | |
e6ccf245 | 788 | void |
3b13a8fd | 789 | clientReplyContext::purgeFoundObject(StoreEntry *entry) |
e6ccf245 | 790 | { |
791 | assert (entry && !entry->isNull()); | |
e4b9a2f0 | 792 | |
793 | if (EBIT_TEST(entry->flags, ENTRY_SPECIAL)) { | |
794 | http->logType = LOG_TCP_DENIED; | |
795 | ErrorState *err = | |
796 | clientBuildError(ERR_ACCESS_DENIED, HTTP_FORBIDDEN, NULL, | |
797 | &http->getConn()->peer.sin_addr, http->request); | |
798 | startError(err); | |
799 | return; | |
800 | } | |
801 | ||
62e76326 | 802 | StoreIOBuffer tempBuffer; |
803 | /* Swap in the metadata */ | |
86a2f789 | 804 | http->storeEntry(entry); |
34266cde | 805 | |
806 | http->storeEntry()->lock() | |
807 | ||
808 | ; | |
3900307b | 809 | http->storeEntry()->createMemObject(http->uri, http->log_uri); |
34266cde | 810 | |
86a2f789 | 811 | http->storeEntry()->mem_obj->method = http->request->method; |
34266cde | 812 | |
86a2f789 | 813 | sc = storeClientListAdd(http->storeEntry(), this); |
34266cde | 814 | |
62e76326 | 815 | http->logType = LOG_TCP_HIT; |
34266cde | 816 | |
62e76326 | 817 | reqofs = 0; |
34266cde | 818 | |
62e76326 | 819 | tempBuffer.offset = http->out.offset; |
34266cde | 820 | |
0655fa4d | 821 | tempBuffer.length = next()->readBuffer.length; |
34266cde | 822 | |
0655fa4d | 823 | tempBuffer.data = next()->readBuffer.data; |
34266cde | 824 | |
86a2f789 | 825 | storeClientCopy(sc, http->storeEntry(), |
0655fa4d | 826 | tempBuffer, CacheHit, this); |
e6ccf245 | 827 | } |
828 | ||
829 | void | |
830 | clientReplyContext::purgeRequest() | |
edce4d98 | 831 | { |
bf8fe701 | 832 | debugs(88, 3, "Config2.onoff.enable_purge = " << |
833 | Config2.onoff.enable_purge); | |
62e76326 | 834 | |
edce4d98 | 835 | if (!Config2.onoff.enable_purge) { |
62e76326 | 836 | http->logType = LOG_TCP_DENIED; |
837 | ErrorState *err = | |
838 | clientBuildError(ERR_ACCESS_DENIED, HTTP_FORBIDDEN, NULL, | |
98242069 | 839 | &http->getConn()->peer.sin_addr, http->request); |
0655fa4d | 840 | startError(err); |
62e76326 | 841 | return; |
edce4d98 | 842 | } |
62e76326 | 843 | |
edce4d98 | 844 | /* Release both IP cache */ |
845 | ipcacheInvalidate(http->request->host); | |
846 | ||
e6ccf245 | 847 | if (!http->flags.purging) |
62e76326 | 848 | purgeRequestFindObjectToPurge(); |
e6ccf245 | 849 | else |
62e76326 | 850 | purgeDoMissPurge(); |
e6ccf245 | 851 | } |
852 | ||
853 | void | |
854 | clientReplyContext::purgeDoMissPurge() | |
855 | { | |
29b8d8d6 | 856 | http->logType = LOG_TCP_MISS; |
e6ccf245 | 857 | lookingforstore = 3; |
3b13a8fd | 858 | StoreEntry::getPublicByRequestMethod(this,http->request, METHOD_GET); |
e6ccf245 | 859 | } |
860 | ||
861 | void | |
3b13a8fd | 862 | clientReplyContext::purgeDoPurgeGet(StoreEntry *newEntry) |
e6ccf245 | 863 | { |
864 | assert (newEntry); | |
865 | /* Move to new() when that is created */ | |
866 | purgeStatus = HTTP_NOT_FOUND; | |
867 | ||
868 | if (!newEntry->isNull()) { | |
62e76326 | 869 | /* Release the cached URI */ |
bf8fe701 | 870 | debugs(88, 4, "clientPurgeRequest: GET '" << newEntry->url() << "'" ); |
5f33b71d | 871 | newEntry->release(); |
62e76326 | 872 | purgeStatus = HTTP_OK; |
edce4d98 | 873 | } |
62e76326 | 874 | |
e6ccf245 | 875 | lookingforstore = 4; |
3b13a8fd | 876 | StoreEntry::getPublicByRequestMethod(this, http->request, METHOD_HEAD); |
e6ccf245 | 877 | } |
878 | ||
879 | void | |
3b13a8fd | 880 | clientReplyContext::purgeDoPurgeHead(StoreEntry *newEntry) |
e6ccf245 | 881 | { |
4fc0ac76 | 882 | if (newEntry && !newEntry->isNull()) { |
bf8fe701 | 883 | debugs(88, 4, "clientPurgeRequest: HEAD '" << newEntry->url() << "'" ); |
5f33b71d | 884 | newEntry->release(); |
62e76326 | 885 | purgeStatus = HTTP_OK; |
edce4d98 | 886 | } |
62e76326 | 887 | |
edce4d98 | 888 | /* And for Vary, release the base URI if none of the headers was included in the request */ |
62e76326 | 889 | |
edce4d98 | 890 | if (http->request->vary_headers |
62e76326 | 891 | && !strstr(http->request->vary_headers, "=")) { |
892 | StoreEntry *entry = storeGetPublic(urlCanonical(http->request), METHOD_GET); | |
893 | ||
894 | if (entry) { | |
bf8fe701 | 895 | debugs(88, 4, "clientPurgeRequest: Vary GET '" << entry->url() << "'" ); |
5f33b71d | 896 | entry->release(); |
62e76326 | 897 | purgeStatus = HTTP_OK; |
898 | } | |
899 | ||
900 | entry = storeGetPublic(urlCanonical(http->request), METHOD_HEAD); | |
901 | ||
902 | if (entry) { | |
bf8fe701 | 903 | debugs(88, 4, "clientPurgeRequest: Vary HEAD '" << entry->url() << "'" ); |
5f33b71d | 904 | entry->release(); |
62e76326 | 905 | purgeStatus = HTTP_OK; |
906 | } | |
edce4d98 | 907 | } |
62e76326 | 908 | |
edce4d98 | 909 | /* |
910 | * Make a new entry to hold the reply to be written | |
911 | * to the client. | |
912 | */ | |
528b2c61 | 913 | /* FIXME: This doesn't need to go through the store. Simply |
914 | * push down the client chain | |
915 | */ | |
0655fa4d | 916 | createStoreEntry(http->request->method, request_flags()); |
62e76326 | 917 | |
0655fa4d | 918 | triggerInitialStoreRead(); |
62e76326 | 919 | |
7dc5f514 | 920 | HttpReply *rep = new HttpReply; |
62e76326 | 921 | |
450e0c10 | 922 | HttpVersion version(1,0); |
62e76326 | 923 | |
7dc5f514 | 924 | rep->setHeaders(version, purgeStatus, NULL, NULL, 0, 0, -1); |
62e76326 | 925 | |
7dc5f514 | 926 | http->storeEntry()->replaceHttpReply(rep); |
62e76326 | 927 | |
86a2f789 | 928 | http->storeEntry()->complete(); |
edce4d98 | 929 | } |
930 | ||
931 | void | |
0655fa4d | 932 | clientReplyContext::traceReply(clientStreamNode * node) |
edce4d98 | 933 | { |
e6ccf245 | 934 | clientStreamNode *next = (clientStreamNode *)node->node.next->data; |
528b2c61 | 935 | StoreIOBuffer tempBuffer; |
0655fa4d | 936 | assert(http->request->max_forwards == 0); |
937 | createStoreEntry(http->request->method, request_flags()); | |
938 | tempBuffer.offset = next->readBuffer.offset + headers_sz; | |
c8be6d7b | 939 | tempBuffer.length = next->readBuffer.length; |
940 | tempBuffer.data = next->readBuffer.data; | |
86a2f789 | 941 | storeClientCopy(sc, http->storeEntry(), |
0655fa4d | 942 | tempBuffer, SendMoreData, this); |
d88e3c49 | 943 | http->storeEntry()->releaseRequest(); |
3900307b | 944 | http->storeEntry()->buffer(); |
7dc5f514 | 945 | HttpReply *rep = new HttpReply; |
450e0c10 | 946 | HttpVersion version(1,0); |
06a5ae20 | 947 | rep->setHeaders(version, HTTP_OK, NULL, "text/plain", |
5cafad19 | 948 | http->request->prefixLen(), 0, squid_curtime); |
db237875 | 949 | http->storeEntry()->replaceHttpReply(rep); |
5cafad19 | 950 | http->request->swapOut(http->storeEntry()); |
86a2f789 | 951 | http->storeEntry()->complete(); |
edce4d98 | 952 | } |
953 | ||
954 | #define SENDING_BODY 0 | |
955 | #define SENDING_HDRSONLY 1 | |
956 | int | |
0655fa4d | 957 | clientReplyContext::checkTransferDone() |
edce4d98 | 958 | { |
86a2f789 | 959 | StoreEntry *entry = http->storeEntry(); |
62e76326 | 960 | |
edce4d98 | 961 | if (entry == NULL) |
62e76326 | 962 | return 0; |
963 | ||
964 | /* | |
edce4d98 | 965 | * For now, 'done_copying' is used for special cases like |
966 | * Range and HEAD requests. | |
967 | */ | |
0655fa4d | 968 | if (http->flags.done_copying) |
62e76326 | 969 | return 1; |
970 | ||
edce4d98 | 971 | /* |
972 | * Handle STORE_OK objects. | |
973 | * objectLen(entry) will be set proprely. | |
974 | * RC: Does objectLen(entry) include the Headers? | |
0e3be1ea | 975 | * RC: Yes. |
edce4d98 | 976 | */ |
977 | if (entry->store_status == STORE_OK) { | |
0655fa4d | 978 | return storeOKTransferDone(); |
e39b9382 | 979 | } else { |
0655fa4d | 980 | return storeNotOKTransferDone(); |
edce4d98 | 981 | } |
e39b9382 | 982 | } |
983 | ||
984 | int | |
985 | clientReplyContext::storeOKTransferDone() const | |
986 | { | |
707fdc47 | 987 | if (http->out.offset >= http->storeEntry()->objectLen() - headers_sz) |
62e76326 | 988 | return 1; |
989 | ||
e39b9382 | 990 | return 0; |
991 | } | |
992 | ||
993 | int | |
994 | clientReplyContext::storeNotOKTransferDone() const | |
995 | { | |
edce4d98 | 996 | /* |
997 | * Now, handle STORE_PENDING objects | |
998 | */ | |
86a2f789 | 999 | MemObject *mem = http->storeEntry()->mem_obj; |
edce4d98 | 1000 | assert(mem != NULL); |
1001 | assert(http->request != NULL); | |
0e3be1ea | 1002 | /* mem->reply was wrong because it uses the UPSTREAM header length!!! */ |
0353e724 | 1003 | HttpReply const *reply = mem->getReply(); |
62e76326 | 1004 | |
e39b9382 | 1005 | if (headers_sz == 0) |
62e76326 | 1006 | /* haven't found end of headers yet */ |
1007 | return 0; | |
e39b9382 | 1008 | |
1009 | int sending = SENDING_BODY; | |
62e76326 | 1010 | |
e39b9382 | 1011 | if (reply->sline.status == HTTP_NO_CONTENT || |
62e76326 | 1012 | reply->sline.status == HTTP_NOT_MODIFIED || |
1013 | reply->sline.status < HTTP_OK || | |
1014 | http->request->method == METHOD_HEAD) | |
1015 | sending = SENDING_HDRSONLY; | |
1016 | ||
edce4d98 | 1017 | /* |
1018 | * Figure out how much data we are supposed to send. | |
1019 | * If we are sending a body and we don't have a content-length, | |
1020 | * then we must wait for the object to become STORE_OK. | |
1021 | */ | |
0e3be1ea | 1022 | if (reply->content_length < 0) |
62e76326 | 1023 | return 0; |
e39b9382 | 1024 | |
1025 | size_t expectedLength = http->out.headers_sz + reply->content_length; | |
62e76326 | 1026 | |
e39b9382 | 1027 | if (http->out.size < expectedLength) |
62e76326 | 1028 | return 0; |
edce4d98 | 1029 | else |
62e76326 | 1030 | return 1; |
edce4d98 | 1031 | } |
1032 | ||
1033 | ||
edce4d98 | 1034 | /* A write has completed, what is the next status based on the |
1035 | * canonical request data? | |
1036 | * 1 something is wrong | |
1037 | * 0 nothing is wrong. | |
1038 | * | |
1039 | */ | |
1040 | int | |
59a1efb2 | 1041 | clientHttpRequestStatus(int fd, ClientHttpRequest const *http) |
edce4d98 | 1042 | { |
1043 | #if SIZEOF_SIZE_T == 4 | |
62e76326 | 1044 | |
edce4d98 | 1045 | if (http->out.size > 0x7FFF0000) { |
bf8fe701 | 1046 | debugs(88, 1, "WARNING: closing FD " << fd << " to prevent counter overflow" ); |
1047 | debugs(88, 1, "\tclient " << (inet_ntoa(http->getConn() != NULL ? http->getConn()->peer.sin_addr : no_addr)) ); | |
4a7a3d56 | 1048 | debugs(88, 1, "\treceived " << http->out.size << " bytes" ); |
bf8fe701 | 1049 | debugs(88, 1, "\tURI " << http->log_uri ); |
62e76326 | 1050 | return 1; |
edce4d98 | 1051 | } |
62e76326 | 1052 | |
edce4d98 | 1053 | #endif |
1054 | #if SIZEOF_OFF_T == 4 | |
1055 | if (http->out.offset > 0x7FFF0000) { | |
bf8fe701 | 1056 | debugs(88, 1, "WARNING: closing FD " << fd << " to prevent counter overflow" ); |
1057 | debugs(88, 1, "\tclient " << (inet_ntoa(http->getConn() != NULL ? http->getConn()->peer.sin_addr : no_addr)) ); | |
4a7a3d56 | 1058 | debugs(88, 1, "\treceived " << http->out.size << " bytes (offset " << http->out.offset << ")" ); |
bf8fe701 | 1059 | debugs(88, 1, "\tURI " << http->log_uri ); |
62e76326 | 1060 | return 1; |
edce4d98 | 1061 | } |
62e76326 | 1062 | |
edce4d98 | 1063 | #endif |
1064 | return 0; | |
1065 | } | |
1066 | ||
62e76326 | 1067 | /* Preconditions: |
edce4d98 | 1068 | * *http is a valid structure. |
1069 | * fd is either -1, or an open fd. | |
1070 | * | |
1071 | * TODO: enumify this | |
1072 | * | |
1073 | * This function is used by any http request sink, to determine the status | |
1074 | * of the object. | |
1075 | */ | |
1076 | clientStream_status_t | |
59a1efb2 | 1077 | clientReplyStatus(clientStreamNode * aNode, ClientHttpRequest * http) |
edce4d98 | 1078 | { |
0655fa4d | 1079 | clientReplyContext *context = dynamic_cast<clientReplyContext *>(aNode->data.getRaw()); |
1080 | assert (context); | |
1081 | assert (context->http == http); | |
1082 | return context->replyStatus(); | |
1083 | } | |
1084 | ||
1085 | clientStream_status_t | |
1086 | clientReplyContext::replyStatus() | |
1087 | { | |
edce4d98 | 1088 | int done; |
1089 | /* Here because lower nodes don't need it */ | |
62e76326 | 1090 | |
86a2f789 | 1091 | if (http->storeEntry() == NULL) |
62e76326 | 1092 | return STREAM_FAILED; /* yuck, but what can we do? */ |
1093 | ||
86a2f789 | 1094 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) |
62e76326 | 1095 | /* TODO: Could upstream read errors (result.flags.error) be |
1096 | * lost, and result in undersize requests being considered | |
1097 | * complete. Should we tcp reset such connections ? | |
1098 | */ | |
1099 | return STREAM_FAILED; | |
1100 | ||
0655fa4d | 1101 | if ((done = checkTransferDone()) != 0 || flags.complete) { |
bf8fe701 | 1102 | debugs(88, 5, "clientReplyStatus: transfer is DONE"); |
62e76326 | 1103 | /* Ok we're finished, but how? */ |
1104 | ||
06a5ae20 | 1105 | if (http->storeEntry()->getReply()->bodySize(http->request->method) < 0) { |
bf8fe701 | 1106 | debugs(88, 5, "clientReplyStatus: closing, content_length < 0"); |
62e76326 | 1107 | return STREAM_FAILED; |
1108 | } | |
1109 | ||
1110 | if (!done) { | |
bf8fe701 | 1111 | debugs(88, 5, "clientReplyStatus: closing, !done, but read 0 bytes"); |
62e76326 | 1112 | return STREAM_FAILED; |
1113 | } | |
1114 | ||
0655fa4d | 1115 | if (!http->gotEnough()) { |
bf8fe701 | 1116 | debugs(88, 5, "clientReplyStatus: client didn't get all it expected"); |
62e76326 | 1117 | return STREAM_UNPLANNED_COMPLETE; |
1118 | } | |
1119 | ||
1120 | if (http->request->flags.proxy_keepalive) { | |
bf8fe701 | 1121 | debugs(88, 5, "clientReplyStatus: stream complete and can keepalive"); |
62e76326 | 1122 | return STREAM_COMPLETE; |
1123 | } | |
1124 | ||
bf8fe701 | 1125 | debugs(88, 5, "clientReplyStatus: stream was not expected to complete!"); |
62e76326 | 1126 | return STREAM_UNPLANNED_COMPLETE; |
edce4d98 | 1127 | } |
62e76326 | 1128 | |
b51aec66 | 1129 | if (http->isReplyBodyTooLarge(http->out.offset - 4096)) { |
1130 | /* 4096 is a margin for the HTTP headers included in out.offset */ | |
bf8fe701 | 1131 | debugs(88, 5, "clientReplyStatus: client reply body is too large"); |
62e76326 | 1132 | return STREAM_FAILED; |
0e3be1ea | 1133 | } |
62e76326 | 1134 | |
edce4d98 | 1135 | return STREAM_NONE; |
1136 | } | |
1137 | ||
62e76326 | 1138 | /* Responses with no body will not have a content-type header, |
edce4d98 | 1139 | * which breaks the rep_mime_type acl, which |
1140 | * coincidentally, is the most common acl for reply access lists. | |
1141 | * A better long term fix for this is to allow acl matchs on the various | |
1142 | * status codes, and then supply a default ruleset that puts these | |
1143 | * codes before any user defines access entries. That way the user | |
1144 | * can choose to block these responses where appropriate, but won't get | |
1145 | * mysterious breakages. | |
1146 | */ | |
0655fa4d | 1147 | bool |
1148 | clientReplyContext::alwaysAllowResponse(http_status sline) const | |
edce4d98 | 1149 | { |
4ef4b952 | 1150 | bool result; |
1151 | ||
edce4d98 | 1152 | switch (sline) { |
62e76326 | 1153 | |
edce4d98 | 1154 | case HTTP_CONTINUE: |
62e76326 | 1155 | |
edce4d98 | 1156 | case HTTP_SWITCHING_PROTOCOLS: |
62e76326 | 1157 | |
edce4d98 | 1158 | case HTTP_PROCESSING: |
62e76326 | 1159 | |
edce4d98 | 1160 | case HTTP_NO_CONTENT: |
62e76326 | 1161 | |
edce4d98 | 1162 | case HTTP_NOT_MODIFIED: |
4ef4b952 | 1163 | result = true; |
62e76326 | 1164 | break; |
1165 | ||
edce4d98 | 1166 | default: |
4ef4b952 | 1167 | result = false; |
edce4d98 | 1168 | } |
4ef4b952 | 1169 | |
1170 | return result; | |
edce4d98 | 1171 | } |
1172 | ||
1173 | /* | |
1174 | * filters out unwanted entries from original reply header | |
1175 | * adds extra entries if we have more info than origin server | |
1176 | * adds Squid specific entries | |
1177 | */ | |
0655fa4d | 1178 | void |
1179 | clientReplyContext::buildReplyHeader() | |
edce4d98 | 1180 | { |
7dc5f514 | 1181 | HttpHeader *hdr = &reply->header; |
c8be6d7b | 1182 | int is_hit = logTypeIsATcpHit(http->logType); |
190154cf | 1183 | HttpRequest *request = http->request; |
edce4d98 | 1184 | #if DONT_FILTER_THESE |
1185 | /* but you might want to if you run Squid as an HTTP accelerator */ | |
a9925b40 | 1186 | /* hdr->delById(HDR_ACCEPT_RANGES); */ |
1187 | hdr->delById(HDR_ETAG); | |
edce4d98 | 1188 | #endif |
62e76326 | 1189 | |
a9925b40 | 1190 | hdr->delById(HDR_PROXY_CONNECTION); |
edce4d98 | 1191 | /* here: Keep-Alive is a field-name, not a connection directive! */ |
a9925b40 | 1192 | hdr->delByName("Keep-Alive"); |
edce4d98 | 1193 | /* remove Set-Cookie if a hit */ |
62e76326 | 1194 | |
edce4d98 | 1195 | if (is_hit) |
a9925b40 | 1196 | hdr->delById(HDR_SET_COOKIE); |
62e76326 | 1197 | |
7dc5f514 | 1198 | /* |
1199 | * Be sure to obey the Connection header | |
1200 | */ | |
1201 | reply->header.removeConnectionHeaderEntries(); | |
62e76326 | 1202 | |
1203 | // if (request->range) | |
7dc5f514 | 1204 | // clientBuildRangeHeader(http, reply); |
edce4d98 | 1205 | /* |
1206 | * Add a estimated Age header on cache hits. | |
1207 | */ | |
1208 | if (is_hit) { | |
62e76326 | 1209 | /* |
1210 | * Remove any existing Age header sent by upstream caches | |
1211 | * (note that the existing header is passed along unmodified | |
1212 | * on cache misses) | |
1213 | */ | |
a9925b40 | 1214 | hdr->delById(HDR_AGE); |
62e76326 | 1215 | /* |
1216 | * This adds the calculated object age. Note that the details of the | |
1217 | * age calculation is performed by adjusting the timestamp in | |
3900307b | 1218 | * StoreEntry::timestampsSet(), not here. |
62e76326 | 1219 | * |
1220 | * BROWSER WORKAROUND: IE sometimes hangs when receiving a 0 Age | |
1221 | * header, so don't use it unless there is a age to report. Please | |
1222 | * note that Age is only used to make a conservative estimation of | |
1223 | * the objects age, so a Age: 0 header does not add any useful | |
1224 | * information to the reply in any case. | |
1225 | */ | |
1226 | ||
86a2f789 | 1227 | if (NULL == http->storeEntry()) |
62e76326 | 1228 | (void) 0; |
86a2f789 | 1229 | else if (http->storeEntry()->timestamp < 0) |
62e76326 | 1230 | (void) 0; |
bbe58ab5 | 1231 | |
1232 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_SPECIAL)) { | |
a9925b40 | 1233 | hdr->delById(HDR_DATE); |
1234 | hdr->insertTime(HDR_DATE, squid_curtime); | |
bbe58ab5 | 1235 | } else if (http->storeEntry()->timestamp < squid_curtime) { |
a9925b40 | 1236 | hdr->putInt(HDR_AGE, |
1237 | squid_curtime - http->storeEntry()->timestamp); | |
62e76326 | 1238 | /* Signal old objects. NB: rfc 2616 is not clear, |
1239 | * by implication, on whether we should do this to all | |
1240 | * responses, or only cache hits. | |
1241 | * 14.46 states it ONLY applys for heuristically caclulated | |
1242 | * freshness values, 13.2.4 doesn't specify the same limitation. | |
1243 | * We interpret RFC 2616 under the combination. | |
1244 | */ | |
1245 | /* TODO: if maxage or s-maxage is present, don't do this */ | |
1246 | ||
86a2f789 | 1247 | if (squid_curtime - http->storeEntry()->timestamp >= 86400) { |
62e76326 | 1248 | char tempbuf[512]; |
1249 | snprintf (tempbuf, sizeof(tempbuf), "%s %s %s", | |
1250 | "113", ThisCache, | |
1251 | "This cache hit is still fresh and more than 1 day old"); | |
a9925b40 | 1252 | hdr->putStr(HDR_WARNING, tempbuf); |
62e76326 | 1253 | } |
1254 | } | |
528b2c61 | 1255 | |
edce4d98 | 1256 | } |
62e76326 | 1257 | |
0bd9aa82 | 1258 | /* Filter unproxyable authentication types */ |
ddd31ed3 | 1259 | if (http->logType != LOG_TCP_DENIED && |
a9925b40 | 1260 | (hdr->has(HDR_WWW_AUTHENTICATE) || hdr->has(HDR_PROXY_AUTHENTICATE))) { |
62e76326 | 1261 | HttpHeaderPos pos = HttpHeaderInitPos; |
1262 | HttpHeaderEntry *e; | |
1263 | ||
a9925b40 | 1264 | while ((e = hdr->getEntry(&pos))) { |
62e76326 | 1265 | if (e->id == HDR_WWW_AUTHENTICATE || e->id == HDR_PROXY_AUTHENTICATE) { |
1266 | const char *value = e->value.buf(); | |
1267 | ||
1268 | if ((strncasecmp(value, "NTLM", 4) == 0 && | |
1269 | (value[4] == '\0' || value[4] == ' ')) | |
1270 | || | |
1271 | (strncasecmp(value, "Negotiate", 9) == 0 && | |
1272 | (value[9] == '\0' || value[9] == ' '))) | |
a9925b40 | 1273 | hdr->delAt(pos); |
62e76326 | 1274 | } |
1275 | } | |
0bd9aa82 | 1276 | } |
62e76326 | 1277 | |
edce4d98 | 1278 | /* Handle authentication headers */ |
1279 | if (request->auth_user_request) | |
7dc5f514 | 1280 | authenticateFixHeader(reply, request->auth_user_request, request, |
62e76326 | 1281 | http->flags.accel, 0); |
1282 | ||
edce4d98 | 1283 | /* Append X-Cache */ |
1284 | httpHeaderPutStrf(hdr, HDR_X_CACHE, "%s from %s", | |
62e76326 | 1285 | is_hit ? "HIT" : "MISS", getMyHostname()); |
1286 | ||
edce4d98 | 1287 | #if USE_CACHE_DIGESTS |
1288 | /* Append X-Cache-Lookup: -- temporary hack, to be removed @?@ @?@ */ | |
1289 | httpHeaderPutStrf(hdr, HDR_X_CACHE_LOOKUP, "%s from %s:%d", | |
0655fa4d | 1290 | lookup_type ? lookup_type : "NONE", |
62e76326 | 1291 | getMyHostname(), getMyPort()); |
1292 | ||
edce4d98 | 1293 | #endif |
62e76326 | 1294 | |
7dc5f514 | 1295 | if (reply->bodySize(request->method) < 0) { |
bf8fe701 | 1296 | debugs(88, 3, "clientBuildReplyHeader: can't keep-alive, unknown body size" ); |
62e76326 | 1297 | request->flags.proxy_keepalive = 0; |
edce4d98 | 1298 | } |
62e76326 | 1299 | |
f5e45ad8 | 1300 | if (fdUsageHigh()&& !request->flags.must_keepalive) { |
bf8fe701 | 1301 | debugs(88, 3, "clientBuildReplyHeader: Not many unused FDs, can't keep-alive"); |
a1ca9253 | 1302 | request->flags.proxy_keepalive = 0; |
1303 | } | |
1304 | ||
58850d15 | 1305 | if (!Config.onoff.error_pconns && reply->sline.status >= 400 && !request->flags.must_keepalive) { |
bf8fe701 | 1306 | debugs(33, 3, "clientBuildReplyHeader: Error, don't keep-alive"); |
58850d15 | 1307 | request->flags.proxy_keepalive = 0; |
1308 | } | |
1309 | ||
f5e45ad8 | 1310 | if (!Config.onoff.client_pconns && !request->flags.must_keepalive) |
1311 | request->flags.proxy_keepalive = 0; | |
1312 | ||
4dea3fdd | 1313 | /* Append VIA */ |
c8be6d7b | 1314 | { |
62e76326 | 1315 | LOCAL_ARRAY(char, bbuf, MAX_URL + 32); |
aaac15e6 | 1316 | String strVia; |
1317 | hdr->getList(HDR_VIA, &strVia); | |
62e76326 | 1318 | snprintf(bbuf, sizeof(bbuf), "%d.%d %s", |
7dc5f514 | 1319 | reply->sline.version.major, |
1320 | reply->sline.version.minor, | |
62e76326 | 1321 | ThisCache); |
1322 | strListAdd(&strVia, bbuf, ','); | |
a9925b40 | 1323 | hdr->delById(HDR_VIA); |
1324 | hdr->putStr(HDR_VIA, strVia.buf()); | |
c8be6d7b | 1325 | } |
edce4d98 | 1326 | /* Signal keep-alive if needed */ |
a9925b40 | 1327 | hdr->putStr(http->flags.accel ? HDR_CONNECTION : HDR_PROXY_CONNECTION, |
1328 | request->flags.proxy_keepalive ? "keep-alive" : "close"); | |
62e76326 | 1329 | |
edce4d98 | 1330 | #if ADD_X_REQUEST_URI |
1331 | /* | |
1332 | * Knowing the URI of the request is useful when debugging persistent | |
1333 | * connections in a client; we cannot guarantee the order of http headers, | |
1334 | * but X-Request-URI is likely to be the very last header to ease use from a | |
1335 | * debugger [hdr->entries.count-1]. | |
1336 | */ | |
a9925b40 | 1337 | hdr->putStr(HDR_X_REQUEST_URI, |
1338 | http->memOjbect()->url ? http->memObject()->url : http->uri); | |
62e76326 | 1339 | |
edce4d98 | 1340 | #endif |
62e76326 | 1341 | |
8c01ada0 | 1342 | httpHdrMangleList(hdr, request, ROR_REPLY); |
edce4d98 | 1343 | } |
1344 | ||
1345 | ||
0655fa4d | 1346 | void |
1347 | clientReplyContext::buildReply(const char *buf, size_t size) | |
edce4d98 | 1348 | { |
edce4d98 | 1349 | size_t k = headersEnd(buf, size); |
62e76326 | 1350 | |
0655fa4d | 1351 | if (!k) |
1352 | return; | |
1353 | ||
7dc5f514 | 1354 | assert(reply == NULL); |
0655fa4d | 1355 | |
7dc5f514 | 1356 | HttpReply *rep = new HttpReply; |
1357 | ||
1358 | reply = HTTPMSGLOCK(rep); | |
1359 | ||
1360 | if (!reply->parseCharBuf(buf, k)) { | |
62e76326 | 1361 | /* parsing failure, get rid of the invalid reply */ |
7dc5f514 | 1362 | HTTPMSGUNLOCK(reply); |
62e76326 | 1363 | |
0655fa4d | 1364 | if (http->request->range) { |
7dc5f514 | 1365 | debugs(0,0,HERE << "look for bug here"); |
62e76326 | 1366 | /* this will fail and destroy request->range */ |
7dc5f514 | 1367 | // clientBuildRangeHeader(http, reply); |
62e76326 | 1368 | } |
b51aec66 | 1369 | |
979da574 | 1370 | return; |
edce4d98 | 1371 | } |
62e76326 | 1372 | |
0655fa4d | 1373 | /* enforce 1.0 reply version */ |
7dc5f514 | 1374 | reply->sline.version = HttpVersion(1,0); |
0655fa4d | 1375 | |
1376 | /* do header conversions */ | |
1377 | buildReplyHeader(); | |
edce4d98 | 1378 | } |
1379 | ||
e6ccf245 | 1380 | void |
1381 | clientReplyContext::identifyStoreObject() | |
edce4d98 | 1382 | { |
190154cf | 1383 | HttpRequest *r = http->request; |
62e76326 | 1384 | |
e6ccf245 | 1385 | if (r->flags.cachable || r->flags.internal) { |
62e76326 | 1386 | lookingforstore = 5; |
1387 | StoreEntry::getPublicByRequest (this, r); | |
559da936 | 1388 | } else { |
62e76326 | 1389 | identifyFoundObject (NullStoreEntry::getInstance()); |
559da936 | 1390 | } |
e6ccf245 | 1391 | } |
1392 | ||
1393 | void | |
1394 | clientReplyContext::identifyFoundObject(StoreEntry *newEntry) | |
1395 | { | |
1396 | StoreEntry *e = newEntry; | |
190154cf | 1397 | HttpRequest *r = http->request; |
62e76326 | 1398 | |
e6ccf245 | 1399 | if (e->isNull()) { |
86a2f789 | 1400 | http->storeEntry(NULL); |
e6ccf245 | 1401 | } else { |
86a2f789 | 1402 | http->storeEntry(e); |
e6ccf245 | 1403 | } |
62e76326 | 1404 | |
86a2f789 | 1405 | e = http->storeEntry(); |
a12a049a | 1406 | /* Release IP-cache entries on reload */ |
1407 | ||
1408 | if (r->flags.nocache) { | |
1409 | ||
1410 | #if USE_DNSSERVERS | |
62e76326 | 1411 | |
62e76326 | 1412 | ipcacheInvalidate(r->host); |
1413 | ||
a12a049a | 1414 | #else |
1415 | ||
1416 | ipcacheInvalidateNegative(r->host); | |
1417 | ||
1418 | #endif /* USE_DNSSERVERS */ | |
1419 | ||
1420 | } | |
1421 | ||
edce4d98 | 1422 | #if HTTP_VIOLATIONS |
62e76326 | 1423 | |
a12a049a | 1424 | else if (r->flags.nocache_hack) { |
1425 | ||
1426 | #if USE_DNSSERVERS | |
1427 | ||
62e76326 | 1428 | ipcacheInvalidate(r->host); |
1429 | ||
a12a049a | 1430 | #else |
1431 | ||
1432 | ipcacheInvalidateNegative(r->host); | |
1433 | ||
1434 | #endif /* USE_DNSSERVERS */ | |
1435 | ||
1436 | } | |
1437 | ||
1438 | #endif /* HTTP_VIOLATIONS */ | |
edce4d98 | 1439 | #if USE_CACHE_DIGESTS |
62e76326 | 1440 | |
86a2f789 | 1441 | lookup_type = http->storeEntry() ? "HIT" : "MISS"; |
62e76326 | 1442 | |
edce4d98 | 1443 | #endif |
62e76326 | 1444 | |
86a2f789 | 1445 | if (NULL == http->storeEntry()) { |
62e76326 | 1446 | /* this object isn't in the cache */ |
bf8fe701 | 1447 | debugs(85, 3, "clientProcessRequest2: storeGet() MISS"); |
62e76326 | 1448 | http->logType = LOG_TCP_MISS; |
1449 | doGetMoreData(); | |
1450 | return; | |
edce4d98 | 1451 | } |
62e76326 | 1452 | |
edce4d98 | 1453 | if (Config.onoff.offline) { |
bf8fe701 | 1454 | debugs(85, 3, "clientProcessRequest2: offline HIT"); |
62e76326 | 1455 | http->logType = LOG_TCP_HIT; |
1456 | doGetMoreData(); | |
1457 | return; | |
edce4d98 | 1458 | } |
62e76326 | 1459 | |
edce4d98 | 1460 | if (http->redirect.status) { |
62e76326 | 1461 | /* force this to be a miss */ |
86a2f789 | 1462 | http->storeEntry(NULL); |
62e76326 | 1463 | http->logType = LOG_TCP_MISS; |
1464 | doGetMoreData(); | |
1465 | return; | |
edce4d98 | 1466 | } |
62e76326 | 1467 | |
3900307b | 1468 | if (!e->validToSend()) { |
bf8fe701 | 1469 | debugs(85, 3, "clientProcessRequest2: !storeEntryValidToSend MISS" ); |
86a2f789 | 1470 | http->storeEntry(NULL); |
62e76326 | 1471 | http->logType = LOG_TCP_MISS; |
1472 | doGetMoreData(); | |
1473 | return; | |
edce4d98 | 1474 | } |
62e76326 | 1475 | |
edce4d98 | 1476 | if (EBIT_TEST(e->flags, ENTRY_SPECIAL)) { |
62e76326 | 1477 | /* Special entries are always hits, no matter what the client says */ |
bf8fe701 | 1478 | debugs(85, 3, "clientProcessRequest2: ENTRY_SPECIAL HIT"); |
62e76326 | 1479 | http->logType = LOG_TCP_HIT; |
1480 | doGetMoreData(); | |
1481 | return; | |
edce4d98 | 1482 | } |
62e76326 | 1483 | |
edce4d98 | 1484 | if (r->flags.nocache) { |
bf8fe701 | 1485 | debugs(85, 3, "clientProcessRequest2: no-cache REFRESH MISS"); |
86a2f789 | 1486 | http->storeEntry(NULL); |
62e76326 | 1487 | http->logType = LOG_TCP_CLIENT_REFRESH_MISS; |
1488 | doGetMoreData(); | |
1489 | return; | |
edce4d98 | 1490 | } |
62e76326 | 1491 | |
bf8fe701 | 1492 | debugs(85, 3, "clientProcessRequest2: default HIT"); |
e6ccf245 | 1493 | http->logType = LOG_TCP_HIT; |
1494 | doGetMoreData(); | |
edce4d98 | 1495 | } |
1496 | ||
1497 | /* Request more data from the store for the client Stream | |
1498 | * This is *the* entry point to this module. | |
1499 | * | |
1500 | * Preconditions: | |
1501 | * This is the head of the list. | |
1502 | * There is at least one more node. | |
1503 | * data context is not null | |
1504 | */ | |
1505 | void | |
59a1efb2 | 1506 | clientGetMoreData(clientStreamNode * aNode, ClientHttpRequest * http) |
edce4d98 | 1507 | { |
edce4d98 | 1508 | /* Test preconditions */ |
e6ccf245 | 1509 | assert(aNode != NULL); |
1510 | assert(cbdataReferenceValid(aNode)); | |
e6ccf245 | 1511 | assert(aNode->node.prev == NULL); |
1512 | assert(aNode->node.next != NULL); | |
0655fa4d | 1513 | clientReplyContext *context = dynamic_cast<clientReplyContext *>(aNode->data.getRaw()); |
1514 | assert (context); | |
edce4d98 | 1515 | assert(context->http == http); |
1516 | ||
559da936 | 1517 | |
0655fa4d | 1518 | clientStreamNode *next = ( clientStreamNode *)aNode->node.next->data; |
62e76326 | 1519 | |
edce4d98 | 1520 | if (!context->ourNode) |
62e76326 | 1521 | context->ourNode = aNode; |
1522 | ||
e6ccf245 | 1523 | /* no cbdatareference, this is only used once, and safely */ |
edce4d98 | 1524 | if (context->flags.storelogiccomplete) { |
62e76326 | 1525 | StoreIOBuffer tempBuffer; |
1526 | tempBuffer.offset = next->readBuffer.offset + context->headers_sz; | |
1527 | tempBuffer.length = next->readBuffer.length; | |
1528 | tempBuffer.data = next->readBuffer.data; | |
1529 | ||
86a2f789 | 1530 | storeClientCopy(context->sc, http->storeEntry(), |
0655fa4d | 1531 | tempBuffer, clientReplyContext::SendMoreData, context); |
62e76326 | 1532 | return; |
edce4d98 | 1533 | } |
62e76326 | 1534 | |
edce4d98 | 1535 | if (context->http->request->method == METHOD_PURGE) { |
62e76326 | 1536 | context->purgeRequest(); |
1537 | return; | |
edce4d98 | 1538 | } |
62e76326 | 1539 | |
edce4d98 | 1540 | if (context->http->request->method == METHOD_TRACE) { |
62e76326 | 1541 | if (context->http->request->max_forwards == 0) { |
0655fa4d | 1542 | context->traceReply(aNode); |
62e76326 | 1543 | return; |
1544 | } | |
1545 | ||
1546 | /* continue forwarding, not finished yet. */ | |
1547 | http->logType = LOG_TCP_MISS; | |
1548 | ||
1549 | context->doGetMoreData(); | |
edce4d98 | 1550 | } else |
62e76326 | 1551 | context->identifyStoreObject(); |
e6ccf245 | 1552 | } |
1553 | ||
1554 | void | |
1555 | clientReplyContext::doGetMoreData() | |
1556 | { | |
edce4d98 | 1557 | /* We still have to do store logic processing - vary, cache hit etc */ |
86a2f789 | 1558 | if (http->storeEntry() != NULL) { |
62e76326 | 1559 | /* someone found the object in the cache for us */ |
1560 | StoreIOBuffer tempBuffer; | |
34266cde | 1561 | |
1562 | http->storeEntry()->lock() | |
1563 | ||
1564 | ; | |
62e76326 | 1565 | |
86a2f789 | 1566 | if (http->storeEntry()->mem_obj == NULL) { |
62e76326 | 1567 | /* |
1568 | * This if-block exists because we don't want to clobber | |
1569 | * a preexiting mem_obj->method value if the mem_obj | |
1570 | * already exists. For example, when a HEAD request | |
1571 | * is a cache hit for a GET response, we want to keep | |
1572 | * the method as GET. | |
1573 | */ | |
3900307b | 1574 | http->storeEntry()->createMemObject(http->uri, http->log_uri); |
86a2f789 | 1575 | http->storeEntry()->mem_obj->method = |
62e76326 | 1576 | http->request->method; |
1577 | } | |
1578 | ||
86a2f789 | 1579 | sc = storeClientListAdd(http->storeEntry(), this); |
edce4d98 | 1580 | #if DELAY_POOLS |
62e76326 | 1581 | |
1582 | sc->setDelayId(DelayId::DelayClient(http)); | |
edce4d98 | 1583 | #endif |
62e76326 | 1584 | |
1585 | assert(http->logType == LOG_TCP_HIT); | |
1586 | reqofs = 0; | |
1587 | /* guarantee nothing has been sent yet! */ | |
1588 | assert(http->out.size == 0); | |
1589 | assert(http->out.offset == 0); | |
1590 | tempBuffer.offset = reqofs; | |
1591 | tempBuffer.length = getNextNode()->readBuffer.length; | |
1592 | tempBuffer.data = getNextNode()->readBuffer.data; | |
559da936 | 1593 | storeClientCopy(sc, http->storeEntry(), tempBuffer, CacheHit, this); |
edce4d98 | 1594 | } else { |
62e76326 | 1595 | /* MISS CASE, http->logType is already set! */ |
0655fa4d | 1596 | processMiss(); |
edce4d98 | 1597 | } |
1598 | } | |
1599 | ||
1600 | /* the next node has removed itself from the stream. */ | |
1601 | void | |
59a1efb2 | 1602 | clientReplyDetach(clientStreamNode * node, ClientHttpRequest * http) |
edce4d98 | 1603 | { |
1604 | /* detach from the stream */ | |
edce4d98 | 1605 | clientStreamDetach(node, http); |
1606 | } | |
1607 | ||
1608 | /* | |
1609 | * accepts chunk of a http message in buf, parses prefix, filters headers and | |
1610 | * such, writes processed message to the message recipient | |
1611 | */ | |
1612 | void | |
0655fa4d | 1613 | clientReplyContext::SendMoreData(void *data, StoreIOBuffer result) |
edce4d98 | 1614 | { |
e6ccf245 | 1615 | clientReplyContext *context = static_cast<clientReplyContext *>(data); |
528b2c61 | 1616 | context->sendMoreData (result); |
1617 | } | |
1618 | ||
1619 | void | |
1620 | clientReplyContext::makeThisHead() | |
1621 | { | |
1622 | /* At least, I think thats what this does */ | |
1623 | dlinkDelete(&http->active, &ClientActiveRequests); | |
1624 | dlinkAdd(http, &http->active, &ClientActiveRequests); | |
1625 | } | |
1626 | ||
1627 | bool | |
1628 | clientReplyContext::errorInStream(StoreIOBuffer const &result, size_t const &sizeToProcess)const | |
1629 | { | |
1630 | return /* aborted request */ | |
86a2f789 | 1631 | (http->storeEntry() && EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) || |
62e76326 | 1632 | /* Upstream read error */ (result.flags.error) || |
1633 | /* Upstream EOF */ (sizeToProcess == 0); | |
528b2c61 | 1634 | } |
1635 | ||
1636 | void | |
1637 | clientReplyContext::sendStreamError(StoreIOBuffer const &result) | |
1638 | { | |
1639 | /* call clientWriteComplete so the client socket gets closed */ | |
1640 | /* We call into the stream, because we don't know that there is a | |
1641 | * client socket! | |
1642 | */ | |
bf8fe701 | 1643 | debugs(88, 5, "clientReplyContext::sendStreamError: A stream error has occured, marking as complete and sending no data."); |
528b2c61 | 1644 | StoreIOBuffer tempBuffer; |
1645 | flags.complete = 1; | |
1646 | tempBuffer.flags.error = result.flags.error; | |
1647 | clientStreamCallback((clientStreamNode*)http->client_stream.head->data, http, NULL, | |
62e76326 | 1648 | tempBuffer); |
528b2c61 | 1649 | } |
1650 | ||
1651 | void | |
1652 | clientReplyContext::pushStreamData(StoreIOBuffer const &result, char *source) | |
1653 | { | |
1654 | StoreIOBuffer tempBuffer; | |
62e76326 | 1655 | |
528b2c61 | 1656 | if (result.length == 0) { |
bf8fe701 | 1657 | debugs(88, 5, "clientReplyContext::pushStreamData: marking request as complete due to 0 length store result"); |
62e76326 | 1658 | flags.complete = 1; |
528b2c61 | 1659 | } |
62e76326 | 1660 | |
43ae1d95 | 1661 | assert(result.offset - headers_sz == next()->readBuffer.offset); |
528b2c61 | 1662 | tempBuffer.offset = result.offset - headers_sz; |
1663 | tempBuffer.length = result.length; | |
62e76326 | 1664 | |
43ae1d95 | 1665 | if (tempBuffer.length) |
1666 | tempBuffer.data = source; | |
62e76326 | 1667 | |
528b2c61 | 1668 | clientStreamCallback((clientStreamNode*)http->client_stream.head->data, http, NULL, |
62e76326 | 1669 | tempBuffer); |
528b2c61 | 1670 | } |
1671 | ||
1672 | clientStreamNode * | |
1673 | clientReplyContext::next() const | |
1674 | { | |
1675 | assert ( (clientStreamNode*)http->client_stream.head->next->data == getNextNode()); | |
1676 | return getNextNode(); | |
1677 | } | |
1678 | ||
1679 | void | |
0655fa4d | 1680 | clientReplyContext::waitForMoreData () |
528b2c61 | 1681 | { |
bf8fe701 | 1682 | debugs(88, 5, "clientReplyContext::waitForMoreData: Waiting for more data to parse reply headers in client side."); |
528b2c61 | 1683 | /* We don't have enough to parse the metadata yet */ |
1684 | /* TODO: the store should give us out of band metadata and | |
1685 | * obsolete this routine | |
1686 | */ | |
1687 | /* wait for more to arrive */ | |
528b2c61 | 1688 | startSendProcess(); |
1689 | } | |
1690 | ||
1691 | void | |
1692 | clientReplyContext::startSendProcess() | |
1693 | { | |
bf8fe701 | 1694 | debugs(88, 5, "clientReplyContext::startSendProcess: triggering store read to SendMoreData"); |
528b2c61 | 1695 | assert(reqofs <= HTTP_REQBUF_SZ); |
1696 | /* TODO: copy into the supplied buffer */ | |
1697 | StoreIOBuffer tempBuffer; | |
1698 | tempBuffer.offset = reqofs; | |
1699 | tempBuffer.length = next()->readBuffer.length - reqofs; | |
1700 | tempBuffer.data = next()->readBuffer.data + reqofs; | |
86a2f789 | 1701 | storeClientCopy(sc, http->storeEntry(), |
0655fa4d | 1702 | tempBuffer, SendMoreData, this); |
1703 | } | |
1704 | ||
b51aec66 | 1705 | /* |
1706 | * Calculates the maximum size allowed for an HTTP response | |
1707 | */ | |
1708 | void | |
1709 | clientReplyContext::buildMaxBodySize(HttpReply * reply) | |
1710 | { | |
ef1955a5 | 1711 | acl_size_t *l = Config.ReplyBodySize; |
1712 | ACLChecklist *ch; | |
b51aec66 | 1713 | |
8777d90e | 1714 | if (http->logType == LOG_TCP_DENIED) |
1715 | return; | |
1716 | ||
ef1955a5 | 1717 | ch = clientAclChecklistCreate(NULL, http); |
8777d90e | 1718 | |
7dc5f514 | 1719 | ch->reply = HTTPMSGLOCK(reply); |
ef1955a5 | 1720 | |
1721 | for (l = Config.ReplyBodySize; l; l = l -> next) { | |
7684c4b1 | 1722 | if (ch->matchAclListFast(l->aclList)) { |
43cb430e | 1723 | if (l->size != static_cast<size_t>(-1)) { |
4a7a3d56 | 1724 | debugs(58, 3, "clientReplyContext: Setting maxBodySize to " << l->size); |
ef1955a5 | 1725 | http->maxReplyBodySize(l->size); |
43cb430e | 1726 | } |
b51aec66 | 1727 | |
ef1955a5 | 1728 | break; |
1729 | } | |
b51aec66 | 1730 | } |
ef1955a5 | 1731 | |
1732 | delete ch; | |
b51aec66 | 1733 | } |
1734 | ||
4993f571 | 1735 | void |
1736 | clientReplyContext::processReplyAccess () | |
1737 | { | |
7dc5f514 | 1738 | assert(reply); |
1739 | buildMaxBodySize(reply); | |
62e76326 | 1740 | |
7dc5f514 | 1741 | if (http->isReplyBodyTooLarge(reply->content_length)) { |
62e76326 | 1742 | ErrorState *err = |
1743 | clientBuildError(ERR_TOO_BIG, HTTP_FORBIDDEN, NULL, | |
94a396a3 | 1744 | http->getConn() != NULL ? &http->getConn()->peer.sin_addr : &no_addr, |
62e76326 | 1745 | http->request); |
86a2f789 | 1746 | removeClientStoreReference(&sc, http); |
7dc5f514 | 1747 | HTTPMSGUNLOCK(reply); |
3c2c1d31 | 1748 | startError(err); |
62e76326 | 1749 | return; |
1750 | } | |
1751 | ||
7dc5f514 | 1752 | headers_sz = reply->hdr_sz; |
62e76326 | 1753 | ACLChecklist *replyChecklist; |
1754 | replyChecklist = clientAclChecklistCreate(Config.accessList.reply, http); | |
7dc5f514 | 1755 | replyChecklist->reply = HTTPMSGLOCK(reply); |
0655fa4d | 1756 | replyChecklist->nonBlockingCheck(ProcessReplyAccessResult, this); |
4993f571 | 1757 | } |
1758 | ||
1759 | void | |
0655fa4d | 1760 | clientReplyContext::ProcessReplyAccessResult (int rv, void *voidMe) |
4993f571 | 1761 | { |
1762 | clientReplyContext *me = static_cast<clientReplyContext *>(voidMe); | |
0655fa4d | 1763 | me->processReplyAccessResult(rv); |
4993f571 | 1764 | } |
1765 | ||
1766 | void | |
0655fa4d | 1767 | clientReplyContext::processReplyAccessResult(bool accessAllowed) |
4993f571 | 1768 | { |
bf8fe701 | 1769 | debugs(88, 2, "The reply for " << RequestMethodStr[http->request->method] |
1770 | << " " << http->uri << " is " | |
1771 | << ( accessAllowed ? "ALLOWED" : "DENIED") | |
1772 | << ", because it matched '" | |
1773 | << (AclMatchedName ? AclMatchedName : "NO ACL's") << "'" ); | |
62e76326 | 1774 | |
7dc5f514 | 1775 | if (!accessAllowed && reply->sline.status != HTTP_FORBIDDEN |
1776 | && !alwaysAllowResponse(reply->sline.status)) { | |
62e76326 | 1777 | /* the if above is slightly broken, but there is no way |
1778 | * to tell if this is a squid generated error page, or one from | |
1779 | * upstream at this point. */ | |
1780 | ErrorState *err; | |
0185bd6f | 1781 | err_type page_id; |
9ce7856a | 1782 | page_id = aclGetDenyInfoPage(&Config.denyInfoList, AclMatchedName, 1); |
0185bd6f | 1783 | |
1784 | if (page_id == ERR_NONE) | |
1785 | page_id = ERR_ACCESS_DENIED; | |
1786 | ||
62e76326 | 1787 | err = |
0185bd6f | 1788 | clientBuildError(page_id, HTTP_FORBIDDEN, NULL, |
94a396a3 | 1789 | http->getConn() != NULL ? &http->getConn()->peer.sin_addr : &no_addr, |
62e76326 | 1790 | http->request); |
0185bd6f | 1791 | |
86a2f789 | 1792 | removeClientStoreReference(&sc, http); |
0185bd6f | 1793 | |
7dc5f514 | 1794 | HTTPMSGUNLOCK(reply); |
0185bd6f | 1795 | |
3c2c1d31 | 1796 | startError(err); |
1797 | ||
c2cf9bea | 1798 | http->logType = LOG_TCP_DENIED_REPLY; |
0185bd6f | 1799 | |
62e76326 | 1800 | return; |
1801 | } | |
1802 | ||
0976f8db | 1803 | /* Ok, the reply is allowed, */ |
1804 | http->loggingEntry(http->storeEntry()); | |
1805 | ||
7dc5f514 | 1806 | ssize_t body_size = reqofs - reply->hdr_sz; |
0976f8db | 1807 | |
62e76326 | 1808 | assert(body_size >= 0); |
0976f8db | 1809 | |
bf8fe701 | 1810 | debugs(88, 3, "clientReplyContext::sendMoreData: Appending " << |
1811 | (int) body_size << " bytes after " << reply->hdr_sz << | |
1812 | " bytes of headers"); | |
0976f8db | 1813 | |
43ae1d95 | 1814 | #if ESI |
62e76326 | 1815 | |
7dc5f514 | 1816 | if (http->flags.accel && reply->sline.status != HTTP_FORBIDDEN && |
1817 | !alwaysAllowResponse(reply->sline.status) && | |
1818 | esiEnableProcessing(reply)) { | |
bf8fe701 | 1819 | debugs(88, 2, "Enabling ESI processing for " << http->uri); |
43ae1d95 | 1820 | clientStreamInsertHead(&http->client_stream, esiStreamRead, |
1821 | esiProcessStream, esiStreamDetach, esiStreamStatus, NULL); | |
1822 | } | |
1823 | ||
1824 | #endif | |
5ef38a13 | 1825 | |
1826 | #if ICAP_CLIENT_RESPMOD_POSTCACHE | |
1827 | ||
bf8fe701 | 1828 | debugs(88, 0, "Enabling ICAP processing for " << http->uri); |
5ef38a13 | 1829 | |
1830 | clientStreamInsertHead(&http->client_stream, icapclientStreamRead, | |
1831 | icapclientProcessStream, | |
1832 | icapclientStreamDetach, | |
1833 | icapclientStreamStatus, | |
1834 | NULL); | |
1835 | ||
1836 | #endif | |
1837 | ||
62e76326 | 1838 | if (http->request->method == METHOD_HEAD) { |
1839 | /* do not forward body for HEAD replies */ | |
1840 | body_size = 0; | |
1841 | http->flags.done_copying = 1; | |
1842 | flags.complete = 1; | |
1843 | } | |
1844 | ||
1845 | assert (!flags.headersSent); | |
1846 | flags.headersSent = true; | |
1847 | ||
1848 | StoreIOBuffer tempBuffer; | |
1849 | char *buf = next()->readBuffer.data; | |
7dc5f514 | 1850 | char *body_buf = buf + reply->hdr_sz; |
62e76326 | 1851 | |
49ea0125 | 1852 | //Server side may disable ranges under some circumstances. |
1853 | ||
1854 | if ((!http->request->range)) | |
1855 | next()->readBuffer.offset = 0; | |
1856 | ||
62e76326 | 1857 | if (next()->readBuffer.offset != 0) { |
1858 | if (next()->readBuffer.offset > body_size) { | |
1859 | /* Can't use any of the body we recieved. send nothing */ | |
1860 | tempBuffer.length = 0; | |
1861 | tempBuffer.data = NULL; | |
1862 | } else { | |
1863 | tempBuffer.length = body_size - next()->readBuffer.offset; | |
1864 | tempBuffer.data = body_buf + next()->readBuffer.offset; | |
1865 | } | |
1866 | } else { | |
1867 | tempBuffer.length = body_size; | |
1868 | tempBuffer.data = body_buf; | |
1869 | } | |
1870 | ||
0655fa4d | 1871 | /* TODO??: move the data in the buffer back by the request header size */ |
62e76326 | 1872 | clientStreamCallback((clientStreamNode *)http->client_stream.head->data, |
7dc5f514 | 1873 | http, reply, tempBuffer); |
62e76326 | 1874 | |
1875 | return; | |
4993f571 | 1876 | } |
1877 | ||
528b2c61 | 1878 | void |
1879 | clientReplyContext::sendMoreData (StoreIOBuffer result) | |
1880 | { | |
50c09fc4 | 1881 | if (deleting) |
1882 | return; | |
1883 | ||
86a2f789 | 1884 | StoreEntry *entry = http->storeEntry(); |
50c09fc4 | 1885 | |
a2ac85d9 | 1886 | ConnStateData::Pointer conn = http->getConn(); |
50c09fc4 | 1887 | |
94a396a3 | 1888 | int fd = conn != NULL ? conn->fd : -1; |
50c09fc4 | 1889 | |
528b2c61 | 1890 | char *buf = next()->readBuffer.data; |
50c09fc4 | 1891 | |
c8be6d7b | 1892 | char *body_buf = buf; |
edce4d98 | 1893 | |
62e76326 | 1894 | /* This is always valid until we get the headers as metadata from |
528b2c61 | 1895 | * storeClientCopy. |
1896 | * Then it becomes reqofs == next->readBuffer.offset() | |
af29fa86 | 1897 | */ |
528b2c61 | 1898 | assert(reqofs == 0 || flags.storelogiccomplete); |
af29fa86 | 1899 | |
528b2c61 | 1900 | if (flags.headersSent && buf != result.data) { |
62e76326 | 1901 | /* we've got to copy some data */ |
1902 | assert(result.length <= next()->readBuffer.length); | |
1903 | xmemcpy(buf, result.data, result.length); | |
1904 | body_buf = buf; | |
528b2c61 | 1905 | } else if (!flags.headersSent && |
62e76326 | 1906 | buf + reqofs !=result.data) { |
1907 | /* we've got to copy some data */ | |
1908 | assert(result.length + reqofs <= next()->readBuffer.length); | |
1909 | xmemcpy(buf + reqofs, result.data, result.length); | |
1910 | body_buf = buf; | |
edce4d98 | 1911 | } |
62e76326 | 1912 | |
edce4d98 | 1913 | /* We've got the final data to start pushing... */ |
528b2c61 | 1914 | flags.storelogiccomplete = 1; |
edce4d98 | 1915 | |
4993f571 | 1916 | reqofs += result.length; |
1917 | ||
1918 | assert(reqofs <= HTTP_REQBUF_SZ || flags.headersSent); | |
62e76326 | 1919 | |
edce4d98 | 1920 | assert(http->request != NULL); |
62e76326 | 1921 | |
edce4d98 | 1922 | /* ESI TODO: remove this assert once everything is stable */ |
1923 | assert(http->client_stream.head->data | |
62e76326 | 1924 | && cbdataReferenceValid(http->client_stream.head->data)); |
528b2c61 | 1925 | |
1926 | makeThisHead(); | |
62e76326 | 1927 | |
bf8fe701 | 1928 | debugs(88, 5, "clientReplyContext::sendMoreData: " << http->uri << ", " << |
1929 | (int) reqofs << " bytes (" << (unsigned int)result.length << | |
1930 | " new bytes)"); | |
4a7a3d56 | 1931 | debugs(88, 5, "clientReplyContext::sendMoreData: FD " << fd << " '" << entry->url() << "', out.offset=" << http->out.offset << " " ); |
528b2c61 | 1932 | |
edce4d98 | 1933 | /* update size of the request */ |
4993f571 | 1934 | reqsize = reqofs; |
62e76326 | 1935 | |
e429f975 | 1936 | if (http->request->flags.resetTCP()) { |
62e76326 | 1937 | /* yuck. FIXME: move to client_side.c */ |
1938 | ||
1939 | if (fd != -1) | |
1940 | comm_reset_close(fd); | |
1941 | ||
1942 | return; | |
528b2c61 | 1943 | } |
62e76326 | 1944 | |
4993f571 | 1945 | if (errorInStream(result, reqofs)) { |
62e76326 | 1946 | sendStreamError(result); |
1947 | return; | |
edce4d98 | 1948 | } |
528b2c61 | 1949 | |
1950 | if (flags.headersSent) { | |
62e76326 | 1951 | pushStreamData (result, buf); |
1952 | return; | |
edce4d98 | 1953 | } |
62e76326 | 1954 | |
0655fa4d | 1955 | buildReply(buf, reqofs); |
4993f571 | 1956 | ssize_t body_size = reqofs; |
62e76326 | 1957 | |
7dc5f514 | 1958 | if (reply) { |
21b92762 | 1959 | |
1960 | /* handle headers */ | |
1961 | ||
1962 | if (Config.onoff.log_mime_hdrs) { | |
1963 | size_t k; | |
1964 | ||
1965 | if ((k = headersEnd(buf, reqofs))) { | |
1966 | safe_free(http->al.headers.reply); | |
1967 | http->al.headers.reply = (char *)xcalloc(k + 1, 1); | |
1968 | xstrncpy(http->al.headers.reply, buf, k); | |
1969 | } | |
1970 | } | |
1971 | ||
62e76326 | 1972 | holdingBuffer = result; |
7dc5f514 | 1973 | processReplyAccess(); |
62e76326 | 1974 | return; |
43ae1d95 | 1975 | |
4993f571 | 1976 | } else if (reqofs < HTTP_REQBUF_SZ && entry->store_status == STORE_PENDING) { |
0655fa4d | 1977 | waitForMoreData(); |
62e76326 | 1978 | return; |
528b2c61 | 1979 | } else if (http->request->method == METHOD_HEAD) { |
62e76326 | 1980 | /* |
1981 | * If we are here, then store_status == STORE_OK and it | |
1982 | * seems we have a HEAD repsponse which is missing the | |
1983 | * empty end-of-headers line (home.mira.net, phttpd/0.99.72 | |
0655fa4d | 1984 | * does this). Because buildReply() fails we just |
62e76326 | 1985 | * call this reply a body, set the done_copying flag and |
1986 | * continue... | |
1987 | */ | |
1988 | /* RBC: Note that this is seriously broken, as we *need* the | |
1989 | * metadata to allow further client modules to work. As such | |
1990 | * webservers are seriously broken, this is probably not | |
1991 | * going to get fixed.. perhapos we should remove it? | |
1992 | */ | |
bf8fe701 | 1993 | debugs(88, 0, "Broken head response - probably phttpd/0.99.72"); |
62e76326 | 1994 | http->flags.done_copying = 1; |
1995 | flags.complete = 1; | |
1996 | /* | |
1997 | * And as this is a malformed HTTP reply we cannot keep | |
1998 | * the connection persistent | |
1999 | */ | |
2000 | http->request->flags.proxy_keepalive = 0; | |
2001 | ||
62e76326 | 2002 | assert(body_buf && body_size); |
0655fa4d | 2003 | StoreIOBuffer tempBuffer (body_size, 0 ,body_buf); |
62e76326 | 2004 | clientStreamCallback((clientStreamNode *)http->client_stream.head->data, |
2005 | http, NULL, tempBuffer); | |
528b2c61 | 2006 | } else { |
bf8fe701 | 2007 | debugs(88, 0, "clientReplyContext::sendMoreData: Unable to parse reply headers within a single HTTP_REQBUF_SZ length buffer"); |
62e76326 | 2008 | StoreIOBuffer tempBuffer; |
2009 | tempBuffer.flags.error = 1; | |
0655fa4d | 2010 | /* XXX FIXME: make an html error page here */ |
62e76326 | 2011 | sendStreamError(tempBuffer); |
2012 | return; | |
edce4d98 | 2013 | } |
528b2c61 | 2014 | fatal ("clientReplyContext::sendMoreData: Unreachable code reached \n"); |
edce4d98 | 2015 | } |
2016 | ||
62e76326 | 2017 | |
edce4d98 | 2018 | |
2019 | /* Using this breaks the client layering just a little! | |
2020 | */ | |
0655fa4d | 2021 | void |
2022 | clientReplyContext::createStoreEntry(method_t m, request_flags flags) | |
edce4d98 | 2023 | { |
0655fa4d | 2024 | assert(http != NULL); |
edce4d98 | 2025 | /* |
2026 | * For erroneous requests, we might not have a h->request, | |
2027 | * so make a fake one. | |
2028 | */ | |
62e76326 | 2029 | |
0655fa4d | 2030 | if (http->request == NULL) |
6dd9f4bd | 2031 | http->request = HTTPMSGLOCK(new HttpRequest(m, PROTO_NONE, null_string)); |
62e76326 | 2032 | |
0655fa4d | 2033 | StoreEntry *e = storeCreateEntry(http->uri, http->log_uri, flags, m); |
62e76326 | 2034 | |
0655fa4d | 2035 | sc = storeClientListAdd(e, this); |
62e76326 | 2036 | |
edce4d98 | 2037 | #if DELAY_POOLS |
62e76326 | 2038 | |
0655fa4d | 2039 | sc->setDelayId(DelayId::DelayClient(http)); |
62e76326 | 2040 | |
edce4d98 | 2041 | #endif |
62e76326 | 2042 | |
0655fa4d | 2043 | reqofs = 0; |
62e76326 | 2044 | |
0655fa4d | 2045 | reqsize = 0; |
62e76326 | 2046 | |
edce4d98 | 2047 | /* I don't think this is actually needed! -- adrian */ |
0655fa4d | 2048 | /* http->reqbuf = http->norm_reqbuf; */ |
2049 | // assert(http->reqbuf == http->norm_reqbuf); | |
edce4d98 | 2050 | /* The next line is illegal because we don't know if the client stream |
2051 | * buffers have been set up | |
2052 | */ | |
0655fa4d | 2053 | // storeClientCopy(http->sc, e, 0, HTTP_REQBUF_SZ, http->reqbuf, |
2054 | // SendMoreData, this); | |
edce4d98 | 2055 | /* So, we mark the store logic as complete */ |
0655fa4d | 2056 | this->flags.storelogiccomplete = 1; |
62e76326 | 2057 | |
edce4d98 | 2058 | /* and get the caller to request a read, from whereever they are */ |
62e76326 | 2059 | /* NOTE: after ANY data flows down the pipe, even one step, |
edce4d98 | 2060 | * this function CAN NOT be used to manage errors |
2061 | */ | |
86a2f789 | 2062 | http->storeEntry(e); |
edce4d98 | 2063 | } |
2064 | ||
2065 | ErrorState * | |
2066 | clientBuildError(err_type page_id, http_status status, char const *url, | |
62e76326 | 2067 | |
ddfcbc22 | 2068 | struct IN_ADDR * src_addr, HttpRequest * request) |
edce4d98 | 2069 | { |
2cc81f1f | 2070 | ErrorState *err = errorCon(page_id, status, request); |
edce4d98 | 2071 | err->src_addr = *src_addr; |
62e76326 | 2072 | |
edce4d98 | 2073 | if (url) |
62e76326 | 2074 | err->url = xstrdup(url); |
2075 | ||
edce4d98 | 2076 | return err; |
2077 | } |