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edce4d98 | 1 | /* |
35ececa5 | 2 | * $Id: client_side_reply.cc,v 1.154 2008/02/16 17:42:27 rousskov Exp $ |
edce4d98 | 3 | * |
4 | * DEBUG: section 88 Client-side Reply Routines | |
5 | * AUTHOR: Robert Collins (Originally Duane Wessels in client_side.c) | |
6 | * | |
7 | * SQUID Web Proxy Cache http://www.squid-cache.org/ | |
8 | * ---------------------------------------------------------- | |
9 | * | |
10 | * Squid is the result of efforts by numerous individuals from | |
11 | * the Internet community; see the CONTRIBUTORS file for full | |
12 | * details. Many organizations have provided support for Squid's | |
13 | * development; see the SPONSORS file for full details. Squid is | |
14 | * Copyrighted (C) 2001 by the Regents of the University of | |
15 | * California; see the COPYRIGHT file for full details. Squid | |
16 | * incorporates software developed and/or copyrighted by other | |
17 | * sources; see the CREDITS file for full details. | |
18 | * | |
19 | * This program is free software; you can redistribute it and/or modify | |
20 | * it under the terms of the GNU General Public License as published by | |
21 | * the Free Software Foundation; either version 2 of the License, or | |
22 | * (at your option) any later version. | |
23 | * | |
24 | * This program is distributed in the hope that it will be useful, | |
25 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
26 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
27 | * GNU General Public License for more details. | |
28 | * | |
29 | * You should have received a copy of the GNU General Public License | |
30 | * along with this program; if not, write to the Free Software | |
31 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. | |
32 | * | |
33 | */ | |
f5bffbd5 | 34 | #include "config.h" |
edce4d98 | 35 | |
e1f7507e AJ |
36 | /* for ClientActiveRequests global */ |
37 | #include "dlink.h" | |
38 | ||
39 | /* old includes without reasons given. */ | |
edce4d98 | 40 | #include "squid.h" |
0655fa4d | 41 | #include "client_side_reply.h" |
aa839030 | 42 | #include "errorpage.h" |
c8be6d7b | 43 | #include "StoreClient.h" |
e6ccf245 | 44 | #include "Store.h" |
528b2c61 | 45 | #include "HttpReply.h" |
46 | #include "HttpRequest.h" | |
b6b6f466 | 47 | #include "forward.h" |
c8be6d7b | 48 | #include "clientStream.h" |
f5691f9c | 49 | #include "AuthUserRequest.h" |
f41735ea | 50 | #if USE_SQUID_ESI |
43ae1d95 | 51 | #include "ESI.h" |
52 | #endif | |
528b2c61 | 53 | #include "MemObject.h" |
7172612f AJ |
54 | #if USE_ZPH_QOS |
55 | #include "fde.h" | |
56 | #endif | |
4fb35c3c | 57 | #include "ACLChecklist.h" |
b0dd28ba | 58 | #include "ACL.h" |
b67e2c8c | 59 | #if DELAY_POOLS |
60 | #include "DelayPools.h" | |
61 | #endif | |
a46d2c0e | 62 | #include "client_side.h" |
985c86bc | 63 | #include "SquidTime.h" |
e6ccf245 | 64 | |
0655fa4d | 65 | CBDATA_CLASS_INIT(clientReplyContext); |
edce4d98 | 66 | |
edce4d98 | 67 | /* Local functions */ |
e6ccf245 | 68 | extern "C" CSS clientReplyStatus; |
cc192b50 | 69 | extern ErrorState *clientBuildError(err_type, http_status, char const *, IPAddress &, HttpRequest *); |
edce4d98 | 70 | |
edce4d98 | 71 | /* privates */ |
edce4d98 | 72 | |
0655fa4d | 73 | clientReplyContext::~clientReplyContext() |
edce4d98 | 74 | { |
50c09fc4 | 75 | deleting = true; |
76 | /* This may trigger a callback back into SendMoreData as the cbdata | |
77 | * is still valid | |
78 | */ | |
86a2f789 | 79 | removeClientStoreReference(&sc, http); |
edce4d98 | 80 | /* old_entry might still be set if we didn't yet get the reply |
0655fa4d | 81 | * code in HandleIMSReply() */ |
82 | removeStoreReference(&old_sc, &old_entry); | |
83 | safe_free(tempBuffer.data); | |
84 | cbdataReferenceDone(http); | |
2b7d324b | 85 | HTTPMSGUNLOCK(reply); |
edce4d98 | 86 | } |
87 | ||
59a1efb2 | 88 | clientReplyContext::clientReplyContext(ClientHttpRequest *clientContext) : http (cbdataReference(clientContext)), old_entry (NULL), old_sc(NULL), deleting(false) |
0655fa4d | 89 | {} |
edce4d98 | 90 | |
91 | /* create an error in the store awaiting the client side to read it. */ | |
0655fa4d | 92 | /* This may be better placed in the clientStream logic, but it has not been |
93 | * relocated there yet | |
94 | */ | |
edce4d98 | 95 | void |
0655fa4d | 96 | clientReplyContext::setReplyToError( |
60745f24 | 97 | err_type err, http_status status, const HttpRequestMethod& method, char const *uri, |
cc192b50 | 98 | IPAddress &addr, HttpRequest * failedrequest, char *unparsedrequest, |
76f142cd | 99 | AuthUserRequest * 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; | |
4f0ef8e8 | 118 | AUTHUSERREQUESTLOCK(errstate->auth_user_request, "errstate"); |
edce4d98 | 119 | } |
62e76326 | 120 | |
edce4d98 | 121 | assert(errstate->callback_data == NULL); |
86a2f789 | 122 | errorAppendEntry(http->storeEntry(), errstate); |
edce4d98 | 123 | /* Now the caller reads to get this */ |
124 | } | |
125 | ||
126 | void | |
0655fa4d | 127 | clientReplyContext::removeStoreReference(store_client ** scp, |
128 | StoreEntry ** ep) | |
edce4d98 | 129 | { |
130 | StoreEntry *e; | |
131 | store_client *sc = *scp; | |
62e76326 | 132 | |
edce4d98 | 133 | if ((e = *ep) != NULL) { |
62e76326 | 134 | *ep = NULL; |
0655fa4d | 135 | storeUnregister(sc, e, this); |
62e76326 | 136 | *scp = NULL; |
97b5e68f | 137 | e->unlock(); |
edce4d98 | 138 | } |
139 | } | |
140 | ||
86a2f789 | 141 | void |
142 | clientReplyContext::removeClientStoreReference(store_client **scp, ClientHttpRequest *http) | |
143 | { | |
144 | StoreEntry *reference = http->storeEntry(); | |
145 | removeStoreReference(scp, &reference); | |
146 | http->storeEntry(reference); | |
147 | } | |
148 | ||
e6ccf245 | 149 | void * |
a695955b | 150 | clientReplyContext::operator new (size_t byteCount) |
e6ccf245 | 151 | { |
152 | /* derived classes with different sizes must implement their own new */ | |
153 | assert (byteCount == sizeof (clientReplyContext)); | |
0655fa4d | 154 | CBDATA_INIT_TYPE(clientReplyContext); |
e6ccf245 | 155 | return cbdataAlloc(clientReplyContext); |
156 | } | |
157 | ||
158 | void | |
159 | clientReplyContext::operator delete (void *address) | |
160 | { | |
a50bfe93 | 161 | clientReplyContext * tmp = (clientReplyContext *)address; |
162 | cbdataFree (tmp); | |
e6ccf245 | 163 | } |
164 | ||
edce4d98 | 165 | void |
0655fa4d | 166 | clientReplyContext::saveState() |
edce4d98 | 167 | { |
e6ccf245 | 168 | assert(old_sc == NULL); |
bf8fe701 | 169 | debugs(88, 3, "clientReplyContext::saveState: saving store context"); |
86a2f789 | 170 | old_entry = http->storeEntry(); |
e6ccf245 | 171 | old_sc = sc; |
172 | old_reqsize = reqsize; | |
173 | tempBuffer.offset = reqofs; | |
edce4d98 | 174 | /* Prevent accessing the now saved entries */ |
86a2f789 | 175 | http->storeEntry(NULL); |
e6ccf245 | 176 | sc = NULL; |
177 | reqsize = 0; | |
178 | reqofs = 0; | |
edce4d98 | 179 | } |
180 | ||
181 | void | |
0655fa4d | 182 | clientReplyContext::restoreState() |
edce4d98 | 183 | { |
e6ccf245 | 184 | assert(old_sc != NULL); |
bf8fe701 | 185 | debugs(88, 3, "clientReplyContext::restoreState: Restoring store context"); |
86a2f789 | 186 | removeClientStoreReference(&sc, http); |
187 | http->storeEntry(old_entry); | |
e6ccf245 | 188 | sc = old_sc; |
189 | reqsize = old_reqsize; | |
190 | reqofs = tempBuffer.offset; | |
edce4d98 | 191 | /* Prevent accessed the old saved entries */ |
0655fa4d | 192 | old_entry = NULL; |
e6ccf245 | 193 | old_sc = NULL; |
194 | old_reqsize = 0; | |
195 | tempBuffer.offset = 0; | |
c8be6d7b | 196 | } |
197 | ||
198 | void | |
0655fa4d | 199 | clientReplyContext::startError(ErrorState * err) |
c8be6d7b | 200 | { |
0655fa4d | 201 | createStoreEntry(http->request->method, request_flags()); |
202 | triggerInitialStoreRead(); | |
86a2f789 | 203 | errorAppendEntry(http->storeEntry(), err); |
edce4d98 | 204 | } |
205 | ||
e6ccf245 | 206 | clientStreamNode * |
528b2c61 | 207 | clientReplyContext::getNextNode() const |
e6ccf245 | 208 | { |
62e76326 | 209 | return (clientStreamNode *)ourNode->node.next->data; |
e6ccf245 | 210 | } |
211 | ||
62e76326 | 212 | /* This function is wrong - the client parameters don't include the |
528b2c61 | 213 | * header offset |
214 | */ | |
c8be6d7b | 215 | void |
0655fa4d | 216 | clientReplyContext::triggerInitialStoreRead() |
c8be6d7b | 217 | { |
0655fa4d | 218 | /* when confident, 0 becomes reqofs, and then this factors into |
528b2c61 | 219 | * startSendProcess |
220 | */ | |
0655fa4d | 221 | assert(reqofs == 0); |
dd272b8e | 222 | StoreIOBuffer tempBuffer (next()->readBuffer.length, 0, next()->readBuffer.data); |
86a2f789 | 223 | storeClientCopy(sc, http->storeEntry(), tempBuffer, SendMoreData, this); |
c8be6d7b | 224 | } |
edce4d98 | 225 | |
226 | /* there is an expired entry in the store. | |
227 | * setup a temporary buffer area and perform an IMS to the origin | |
228 | */ | |
0655fa4d | 229 | void |
230 | clientReplyContext::processExpired() | |
edce4d98 | 231 | { |
edce4d98 | 232 | char *url = http->uri; |
233 | StoreEntry *entry = NULL; | |
bf8fe701 | 234 | debugs(88, 3, "clientReplyContext::processExpired: '" << http->uri << "'"); |
86a2f789 | 235 | assert(http->storeEntry()->lastmod >= 0); |
edce4d98 | 236 | /* |
237 | * check if we are allowed to contact other servers | |
238 | * @?@: Instead of a 504 (Gateway Timeout) reply, we may want to return | |
239 | * a stale entry *if* it matches client requirements | |
240 | */ | |
62e76326 | 241 | |
0655fa4d | 242 | if (http->onlyIfCached()) { |
243 | processOnlyIfCachedMiss(); | |
62e76326 | 244 | return; |
edce4d98 | 245 | } |
62e76326 | 246 | |
edce4d98 | 247 | http->request->flags.refresh = 1; |
248 | #if STORE_CLIENT_LIST_DEBUG | |
c8be6d7b | 249 | /* Prevent a race with the store client memory free routines |
edce4d98 | 250 | */ |
0655fa4d | 251 | assert(storeClientIsThisAClient(sc, this)); |
edce4d98 | 252 | #endif |
253 | /* Prepare to make a new temporary request */ | |
0655fa4d | 254 | saveState(); |
edce4d98 | 255 | entry = storeCreateEntry(url, |
62e76326 | 256 | http->log_uri, http->request->flags, http->request->method); |
34266cde | 257 | /* NOTE, don't call StoreEntry->lock(), storeCreateEntry() does it */ |
0655fa4d | 258 | sc = storeClientListAdd(entry, this); |
edce4d98 | 259 | #if DELAY_POOLS |
260 | /* delay_id is already set on original store client */ | |
0655fa4d | 261 | sc->setDelayId(DelayId::DelayClient(http)); |
edce4d98 | 262 | #endif |
62e76326 | 263 | |
0655fa4d | 264 | http->request->lastmod = old_entry->lastmod; |
4a7a3d56 | 265 | debugs(88, 5, "clientReplyContext::processExpired : lastmod " << entry->lastmod ); |
86a2f789 | 266 | http->storeEntry(entry); |
c8be6d7b | 267 | assert(http->out.offset == 0); |
b2d22df6 | 268 | |
269 | /* | |
270 | * A refcounted pointer so that FwdState stays around as long as | |
271 | * this clientReplyContext does | |
272 | */ | |
94a396a3 | 273 | FwdState::fwdStart(http->getConn() != NULL ? http->getConn()->fd : -1, |
be0c6690 | 274 | http->storeEntry(), |
275 | http->request); | |
edce4d98 | 276 | /* Register with storage manager to receive updates when data comes in. */ |
62e76326 | 277 | |
edce4d98 | 278 | if (EBIT_TEST(entry->flags, ENTRY_ABORTED)) |
bf8fe701 | 279 | debugs(88, 0, "clientReplyContext::processExpired: Found ENTRY_ABORTED object"); |
62e76326 | 280 | |
c8be6d7b | 281 | { |
62e76326 | 282 | /* start counting the length from 0 */ |
0655fa4d | 283 | StoreIOBuffer tempBuffer(HTTP_REQBUF_SZ, 0, tempbuf); |
284 | storeClientCopy(sc, entry, tempBuffer, HandleIMSReply, this); | |
edce4d98 | 285 | } |
286 | } | |
287 | ||
edce4d98 | 288 | |
528b2c61 | 289 | void |
290 | clientReplyContext::sendClientUpstreamResponse() | |
291 | { | |
292 | StoreIOBuffer tempresult; | |
0655fa4d | 293 | removeStoreReference(&old_sc, &old_entry); |
2324cda2 | 294 | /* here the data to send is the data we just received */ |
528b2c61 | 295 | tempBuffer.offset = 0; |
296 | old_reqsize = 0; | |
0655fa4d | 297 | /* sendMoreData tracks the offset as well. |
528b2c61 | 298 | * Force it back to zero */ |
299 | reqofs = 0; | |
86a2f789 | 300 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 301 | /* TODO: provide sendMoreData with the ready parsed reply */ |
528b2c61 | 302 | tempresult.length = reqsize; |
303 | tempresult.data = tempbuf; | |
0655fa4d | 304 | sendMoreData(tempresult); |
528b2c61 | 305 | } |
306 | ||
edce4d98 | 307 | void |
0655fa4d | 308 | clientReplyContext::HandleIMSReply(void *data, StoreIOBuffer result) |
edce4d98 | 309 | { |
e6ccf245 | 310 | clientReplyContext *context = (clientReplyContext *)data; |
0655fa4d | 311 | context->handleIMSReply(result); |
312 | } | |
62e76326 | 313 | |
0655fa4d | 314 | void |
315 | clientReplyContext::sendClientOldEntry() | |
316 | { | |
317 | /* Get the old request back */ | |
318 | restoreState(); | |
319 | /* here the data to send is in the next nodes buffers already */ | |
86a2f789 | 320 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 321 | /* sendMoreData tracks the offset as well. |
322 | * Force it back to zero */ | |
323 | reqofs = 0; | |
324 | StoreIOBuffer tempresult (reqsize, reqofs, next()->readBuffer.data); | |
325 | sendMoreData(tempresult); | |
326 | } | |
62e76326 | 327 | |
1d7ab0f4 | 328 | /* This is the workhorse of the HandleIMSReply callback. |
329 | * | |
330 | * It is called when we've got data back from the origin following our | |
331 | * IMS request to revalidate a stale entry. | |
332 | */ | |
0655fa4d | 333 | void |
1d7ab0f4 | 334 | clientReplyContext::handleIMSReply(StoreIOBuffer result) |
0655fa4d | 335 | { |
1d7ab0f4 | 336 | if (deleting) |
337 | return; | |
62e76326 | 338 | |
bf8fe701 | 339 | debugs(88, 3, "handleIMSReply: " << http->storeEntry()->url() << ", " << (long unsigned) result.length << " bytes" ); |
62e76326 | 340 | |
1d7ab0f4 | 341 | if (http->storeEntry() == NULL) |
342 | return; | |
07947ad8 | 343 | |
1d7ab0f4 | 344 | if (result.flags.error && !EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) |
345 | return; | |
62e76326 | 346 | |
1d7ab0f4 | 347 | /* update size of the request */ |
348 | reqsize = result.length + reqofs; | |
62e76326 | 349 | |
1d7ab0f4 | 350 | const http_status status = http->storeEntry()->getReply()->sline.status; |
62e76326 | 351 | |
1d7ab0f4 | 352 | // request to origin was aborted |
353 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) { | |
bf8fe701 | 354 | debugs(88, 3, "handleIMSReply: request to origin aborted '" << http->storeEntry()->url() << "', sending old entry to client" ); |
1d7ab0f4 | 355 | http->logType = LOG_TCP_REFRESH_FAIL; |
356 | sendClientOldEntry(); | |
0655fa4d | 357 | } |
62e76326 | 358 | |
b297bcd0 | 359 | HttpReply *old_rep = (HttpReply *) old_entry->getReply(); |
62e76326 | 360 | |
b297bcd0 | 361 | // origin replied 304 |
62e76326 | 362 | |
b297bcd0 HN |
363 | if (status == HTTP_NOT_MODIFIED) { |
364 | http->logType = LOG_TCP_REFRESH_UNMODIFIED; | |
045a76ab | 365 | |
b297bcd0 HN |
366 | // update headers on existing entry |
367 | HttpReply *old_rep = (HttpReply *) old_entry->getReply(); | |
368 | old_rep->updateOnNotModified(http->storeEntry()->getReply()); | |
369 | old_entry->timestampsSet(); | |
62e76326 | 370 | |
b297bcd0 | 371 | // if client sent IMS |
62e76326 | 372 | |
b297bcd0 HN |
373 | if (http->request->flags.ims) { |
374 | // forward the 304 from origin | |
375 | debugs(88, 3, "handleIMSReply: origin replied 304, revalidating existing entry and forwarding 304 to client"); | |
376 | sendClientUpstreamResponse(); | |
377 | } else { | |
378 | // send existing entry, it's still valid | |
379 | debugs(88, 3, "handleIMSReply: origin replied 304, revalidating existing entry and sending " << | |
380 | old_rep->sline.status << " to client"); | |
381 | sendClientOldEntry(); | |
382 | } | |
383 | } | |
62e76326 | 384 | |
b297bcd0 HN |
385 | // origin replied with a non-error code |
386 | else if (status > HTTP_STATUS_NONE && status < HTTP_INTERNAL_SERVER_ERROR) { | |
387 | // forward response from origin | |
388 | http->logType = LOG_TCP_REFRESH_MODIFIED; | |
389 | debugs(88, 3, "handleIMSReply: origin replied " << status << ", replacing existing entry and forwarding to client"); | |
390 | sendClientUpstreamResponse(); | |
391 | } | |
62e76326 | 392 | |
b297bcd0 HN |
393 | // origin replied with an error |
394 | else { | |
395 | // ignore and let client have old entry | |
396 | http->logType = LOG_TCP_REFRESH_FAIL; | |
397 | debugs(88, 3, "handleIMSReply: origin replied with error " << | |
398 | status << ", sending old entry (" << old_rep->sline.status << ") to client"); | |
399 | sendClientOldEntry(); | |
1d7ab0f4 | 400 | } |
edce4d98 | 401 | } |
402 | ||
e6ccf245 | 403 | extern "C" CSR clientGetMoreData; |
404 | extern "C" CSD clientReplyDetach; | |
edce4d98 | 405 | |
406 | /* | |
407 | * clientCacheHit should only be called until the HTTP reply headers | |
408 | * have been parsed. Normally this should be a single call, but | |
409 | * it might take more than one. As soon as we have the headers, | |
0655fa4d | 410 | * we hand off to clientSendMoreData, processExpired, or |
411 | * processMiss. | |
edce4d98 | 412 | */ |
413 | void | |
0655fa4d | 414 | clientReplyContext::CacheHit(void *data, StoreIOBuffer result) |
edce4d98 | 415 | { |
e6ccf245 | 416 | clientReplyContext *context = (clientReplyContext *)data; |
0655fa4d | 417 | context->cacheHit (result); |
418 | } | |
419 | ||
420 | void | |
421 | clientReplyContext::cacheHit(StoreIOBuffer result) | |
422 | { | |
045a76ab | 423 | if (deleting) |
424 | return; | |
425 | ||
86a2f789 | 426 | StoreEntry *e = http->storeEntry(); |
045a76ab | 427 | |
190154cf | 428 | HttpRequest *r = http->request; |
045a76ab | 429 | |
4a7a3d56 | 430 | debugs(88, 3, "clientCacheHit: " << http->uri << ", " << result.length << " bytes"); |
62e76326 | 431 | |
86a2f789 | 432 | if (http->storeEntry() == NULL) { |
bf8fe701 | 433 | debugs(88, 3, "clientCacheHit: request aborted"); |
62e76326 | 434 | return; |
c8be6d7b | 435 | } else if (result.flags.error) { |
62e76326 | 436 | /* swap in failure */ |
bf8fe701 | 437 | debugs(88, 3, "clientCacheHit: swapin failure for " << http->uri); |
62e76326 | 438 | http->logType = LOG_TCP_SWAPFAIL_MISS; |
86a2f789 | 439 | removeClientStoreReference(&sc, http); |
0655fa4d | 440 | processMiss(); |
62e76326 | 441 | return; |
edce4d98 | 442 | } |
62e76326 | 443 | |
d3b3ab85 | 444 | if (result.length == 0) { |
62e76326 | 445 | /* the store couldn't get enough data from the file for us to id the |
446 | * object | |
447 | */ | |
448 | /* treat as a miss */ | |
449 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 450 | processMiss(); |
62e76326 | 451 | return; |
d3b3ab85 | 452 | } |
62e76326 | 453 | |
edce4d98 | 454 | assert(!EBIT_TEST(e->flags, ENTRY_ABORTED)); |
455 | /* update size of the request */ | |
0655fa4d | 456 | reqsize = result.length + reqofs; |
62e76326 | 457 | |
edce4d98 | 458 | /* |
459 | * Got the headers, now grok them | |
460 | */ | |
29b8d8d6 | 461 | assert(http->logType == LOG_TCP_HIT); |
62e76326 | 462 | |
cdd4e1c1 | 463 | if (strcmp(e->mem_obj->url, urlCanonical(r)) != 0) { |
464 | debugs(33, 1, "clientProcessHit: URL mismatch, '" << e->mem_obj->url << "' != '" << urlCanonical(r) << "'"); | |
465 | processMiss(); | |
466 | return; | |
467 | } | |
468 | ||
edce4d98 | 469 | switch (varyEvaluateMatch(e, r)) { |
62e76326 | 470 | |
edce4d98 | 471 | case VARY_NONE: |
62e76326 | 472 | /* No variance detected. Continue as normal */ |
473 | break; | |
474 | ||
edce4d98 | 475 | case VARY_MATCH: |
62e76326 | 476 | /* This is the correct entity for this request. Continue */ |
bf8fe701 | 477 | debugs(88, 2, "clientProcessHit: Vary MATCH!"); |
62e76326 | 478 | break; |
479 | ||
edce4d98 | 480 | case VARY_OTHER: |
62e76326 | 481 | /* This is not the correct entity for this request. We need |
482 | * to requery the cache. | |
483 | */ | |
86a2f789 | 484 | removeClientStoreReference(&sc, http); |
62e76326 | 485 | e = NULL; |
486 | /* Note: varyEvalyateMatch updates the request with vary information | |
487 | * so we only get here once. (it also takes care of cancelling loops) | |
488 | */ | |
bf8fe701 | 489 | debugs(88, 2, "clientProcessHit: Vary detected!"); |
0655fa4d | 490 | clientGetMoreData(ourNode, http); |
62e76326 | 491 | return; |
492 | ||
edce4d98 | 493 | case VARY_CANCEL: |
62e76326 | 494 | /* varyEvaluateMatch found a object loop. Process as miss */ |
bf8fe701 | 495 | debugs(88, 1, "clientProcessHit: Vary object loop!"); |
0655fa4d | 496 | processMiss(); |
62e76326 | 497 | return; |
edce4d98 | 498 | } |
62e76326 | 499 | |
edce4d98 | 500 | if (r->method == METHOD_PURGE) { |
86a2f789 | 501 | removeClientStoreReference(&sc, http); |
62e76326 | 502 | e = NULL; |
0655fa4d | 503 | purgeRequest(); |
62e76326 | 504 | return; |
edce4d98 | 505 | } |
62e76326 | 506 | |
3900307b | 507 | if (e->checkNegativeHit() |
36e6655b | 508 | #if HTTP_VIOLATIONS |
509 | && !r->flags.nocache_hack | |
510 | #endif | |
511 | ) { | |
62e76326 | 512 | http->logType = LOG_TCP_NEGATIVE_HIT; |
0655fa4d | 513 | sendMoreData(result); |
f7cf9b8c | 514 | } else if (!Config.onoff.offline && refreshCheckHTTP(e, r) && !http->flags.internal) { |
bf8fe701 | 515 | debugs(88, 5, "clientCacheHit: in refreshCheck() block"); |
62e76326 | 516 | /* |
517 | * We hold a stale copy; it needs to be validated | |
518 | */ | |
519 | /* | |
520 | * The 'need_validation' flag is used to prevent forwarding | |
521 | * loops between siblings. If our copy of the object is stale, | |
522 | * then we should probably only use parents for the validation | |
523 | * request. Otherwise two siblings could generate a loop if | |
524 | * both have a stale version of the object. | |
525 | */ | |
526 | r->flags.need_validation = 1; | |
527 | ||
528 | if (e->lastmod < 0) { | |
529 | /* | |
530 | * Previous reply didn't have a Last-Modified header, | |
531 | * we cannot revalidate it. | |
532 | */ | |
533 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 534 | processMiss(); |
62e76326 | 535 | } else if (r->flags.nocache) { |
536 | /* | |
537 | * This did not match a refresh pattern that overrides no-cache | |
538 | * we should honour the client no-cache header. | |
539 | */ | |
540 | http->logType = LOG_TCP_CLIENT_REFRESH_MISS; | |
0655fa4d | 541 | processMiss(); |
62e76326 | 542 | } else if (r->protocol == PROTO_HTTP) { |
543 | /* | |
544 | * Object needs to be revalidated | |
545 | * XXX This could apply to FTP as well, if Last-Modified is known. | |
546 | */ | |
0655fa4d | 547 | processExpired(); |
62e76326 | 548 | } else { |
549 | /* | |
550 | * We don't know how to re-validate other protocols. Handle | |
551 | * them as if the object has expired. | |
552 | */ | |
553 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 554 | processMiss(); |
62e76326 | 555 | } |
edce4d98 | 556 | } else if (r->flags.ims) { |
62e76326 | 557 | /* |
558 | * Handle If-Modified-Since requests from the client | |
559 | */ | |
560 | ||
561 | if (e->getReply()->sline.status != HTTP_OK) { | |
bf8fe701 | 562 | debugs(88, 4, "clientCacheHit: Reply code " << |
563 | e->getReply()->sline.status << " != 200"); | |
62e76326 | 564 | http->logType = LOG_TCP_MISS; |
0655fa4d | 565 | processMiss(); |
566 | } else if (e->modifiedSince(http->request)) { | |
62e76326 | 567 | http->logType = LOG_TCP_IMS_HIT; |
0655fa4d | 568 | sendMoreData(result); |
62e76326 | 569 | } else { |
0655fa4d | 570 | time_t const timestamp = e->timestamp; |
06a5ae20 | 571 | HttpReply *temprep = e->getReply()->make304(); |
62e76326 | 572 | http->logType = LOG_TCP_IMS_HIT; |
86a2f789 | 573 | removeClientStoreReference(&sc, http); |
0655fa4d | 574 | createStoreEntry(http->request->method, |
575 | request_flags()); | |
86a2f789 | 576 | e = http->storeEntry(); |
62e76326 | 577 | /* |
578 | * Copy timestamp from the original entry so the 304 | |
579 | * reply has a meaningful Age: header. | |
580 | */ | |
581 | e->timestamp = timestamp; | |
db237875 | 582 | e->replaceHttpReply(temprep); |
62e76326 | 583 | e->complete(); |
584 | /* TODO: why put this in the store and then serialise it and then parse it again. | |
585 | * Simply mark the request complete in our context and | |
586 | * write the reply struct to the client side | |
587 | */ | |
0655fa4d | 588 | triggerInitialStoreRead(); |
62e76326 | 589 | } |
edce4d98 | 590 | } else { |
62e76326 | 591 | /* |
592 | * plain ol' cache hit | |
593 | */ | |
594 | ||
8d5f19a0 | 595 | #if DELAY_POOLS |
ffdf45f2 | 596 | if (e->store_status != STORE_OK) |
849b826a | 597 | http->logType = LOG_TCP_MISS; |
5bf4d170 | 598 | else |
599 | #endif | |
600 | if (e->mem_status == IN_MEMORY) | |
62e76326 | 601 | http->logType = LOG_TCP_MEM_HIT; |
602 | else if (Config.onoff.offline) | |
603 | http->logType = LOG_TCP_OFFLINE_HIT; | |
604 | ||
0655fa4d | 605 | sendMoreData(result); |
edce4d98 | 606 | } |
607 | } | |
608 | ||
609 | /* | |
610 | * Prepare to fetch the object as it's a cache miss of some kind. | |
611 | */ | |
612 | void | |
0655fa4d | 613 | clientReplyContext::processMiss() |
edce4d98 | 614 | { |
edce4d98 | 615 | char *url = http->uri; |
190154cf | 616 | HttpRequest *r = http->request; |
edce4d98 | 617 | ErrorState *err = NULL; |
60745f24 | 618 | debugs(88, 4, "clientProcessMiss: '" << RequestMethodStr(r->method) << " " << url << "'"); |
edce4d98 | 619 | /* |
620 | * We might have a left-over StoreEntry from a failed cache hit | |
621 | * or IMS request. | |
622 | */ | |
62e76326 | 623 | |
86a2f789 | 624 | if (http->storeEntry()) { |
625 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_SPECIAL)) { | |
bf8fe701 | 626 | debugs(88, 0, "clientProcessMiss: miss on a special object (" << url << ")."); |
627 | debugs(88, 0, "\tlog_type = " << log_tags[http->logType]); | |
3900307b | 628 | http->storeEntry()->dump(1); |
62e76326 | 629 | } |
630 | ||
86a2f789 | 631 | removeClientStoreReference(&sc, http); |
edce4d98 | 632 | } |
62e76326 | 633 | |
edce4d98 | 634 | if (r->method == METHOD_PURGE) { |
0655fa4d | 635 | purgeRequest(); |
62e76326 | 636 | return; |
edce4d98 | 637 | } |
914b89a2 | 638 | |
639 | if (r->method == METHOD_OTHER) { | |
60745f24 | 640 | // invalidate all cache entries |
641 | purgeAllCached(); | |
642 | } | |
62e76326 | 643 | |
0655fa4d | 644 | if (http->onlyIfCached()) { |
645 | processOnlyIfCachedMiss(); | |
62e76326 | 646 | return; |
edce4d98 | 647 | } |
62e76326 | 648 | |
edce4d98 | 649 | /* |
650 | * Deny loops when running in accelerator/transproxy mode. | |
651 | */ | |
652 | if (http->flags.accel && r->flags.loopdetect) { | |
62e76326 | 653 | http->al.http.code = HTTP_FORBIDDEN; |
cc192b50 | 654 | err = clientBuildError(ERR_ACCESS_DENIED, HTTP_FORBIDDEN, NULL, http->getConn()->peer, http->request); |
0655fa4d | 655 | createStoreEntry(r->method, request_flags()); |
86a2f789 | 656 | errorAppendEntry(http->storeEntry(), err); |
0655fa4d | 657 | triggerInitialStoreRead(); |
62e76326 | 658 | return; |
edce4d98 | 659 | } else { |
60745f24 | 660 | assert(http->out.offset == 0); |
0655fa4d | 661 | createStoreEntry(r->method, r->flags); |
662 | triggerInitialStoreRead(); | |
62e76326 | 663 | |
664 | if (http->redirect.status) { | |
06a5ae20 | 665 | HttpReply *rep = new HttpReply; |
edce4d98 | 666 | #if LOG_TCP_REDIRECTS |
62e76326 | 667 | |
668 | http->logType = LOG_TCP_REDIRECT; | |
edce4d98 | 669 | #endif |
62e76326 | 670 | |
d88e3c49 | 671 | http->storeEntry()->releaseRequest(); |
06a5ae20 | 672 | rep->redirect(http->redirect.status, http->redirect.location); |
db237875 | 673 | http->storeEntry()->replaceHttpReply(rep); |
86a2f789 | 674 | http->storeEntry()->complete(); |
62e76326 | 675 | return; |
676 | } | |
677 | ||
678 | if (http->flags.internal) | |
679 | r->protocol = PROTO_INTERNAL; | |
680 | ||
94a396a3 | 681 | FwdState::fwdStart(http->getConn() != NULL ? http->getConn()->fd : -1, |
be0c6690 | 682 | http->storeEntry(), |
683 | r); | |
edce4d98 | 684 | } |
685 | } | |
686 | ||
687 | /* | |
688 | * client issued a request with an only-if-cached cache-control directive; | |
689 | * we did not find a cached object that can be returned without | |
690 | * contacting other servers; | |
691 | * respond with a 504 (Gateway Timeout) as suggested in [RFC 2068] | |
692 | */ | |
0655fa4d | 693 | void |
694 | clientReplyContext::processOnlyIfCachedMiss() | |
edce4d98 | 695 | { |
edce4d98 | 696 | ErrorState *err = NULL; |
bf8fe701 | 697 | debugs(88, 4, "clientProcessOnlyIfCachedMiss: '" << |
60745f24 | 698 | RequestMethodStr(http->request->method) << " " << http->uri << "'"); |
edce4d98 | 699 | http->al.http.code = HTTP_GATEWAY_TIMEOUT; |
cc192b50 | 700 | err = clientBuildError(ERR_ONLY_IF_CACHED_MISS, HTTP_GATEWAY_TIMEOUT, NULL, http->getConn()->peer, http->request); |
86a2f789 | 701 | removeClientStoreReference(&sc, http); |
0655fa4d | 702 | startError(err); |
edce4d98 | 703 | } |
704 | ||
705 | void | |
e6ccf245 | 706 | clientReplyContext::purgeRequestFindObjectToPurge() |
60745f24 | 707 | { |
e6ccf245 | 708 | /* Try to find a base entry */ |
709 | http->flags.purging = 1; | |
710 | lookingforstore = 1; | |
60745f24 | 711 | |
712 | // TODO: can we use purgeAllCached() here instead of doing the | |
713 | // getPublicByRequestMethod() dance? | |
3b13a8fd | 714 | StoreEntry::getPublicByRequestMethod(this, http->request, METHOD_GET); |
e6ccf245 | 715 | } |
716 | ||
c1520b67 AJ |
717 | // Purges all entries with a given url |
718 | // TODO: move to SideAgent parent, when we have one | |
60745f24 | 719 | /* |
720 | * We probably cannot purge Vary-affected responses because their MD5 | |
721 | * keys depend on vary headers. | |
722 | */ | |
c1520b67 AJ |
723 | void |
724 | purgeEntriesByUrl(const char *url) | |
725 | { | |
726 | for (HttpRequestMethod m(METHOD_NONE); m != METHOD_ENUM_END; ++m) { | |
727 | if (m.isCacheble()) { | |
728 | if (StoreEntry *entry = storeGetPublic(url, m)) { | |
729 | debugs(88, 5, "purging " << RequestMethodStr(m) << ' ' << url); | |
730 | entry->release(); | |
731 | } | |
732 | } | |
733 | } | |
734 | } | |
735 | ||
60745f24 | 736 | void |
737 | clientReplyContext::purgeAllCached() | |
738 | { | |
739 | const char *url = urlCanonical(http->request); | |
c1520b67 | 740 | purgeEntriesByUrl(url); |
35ececa5 | 741 | } |
60745f24 | 742 | |
e6ccf245 | 743 | void |
3b13a8fd | 744 | clientReplyContext::created(StoreEntry *newEntry) |
e6ccf245 | 745 | { |
746 | if (lookingforstore == 1) | |
62e76326 | 747 | purgeFoundGet(newEntry); |
e6ccf245 | 748 | else if (lookingforstore == 2) |
62e76326 | 749 | purgeFoundHead(newEntry); |
e6ccf245 | 750 | else if (lookingforstore == 3) |
62e76326 | 751 | purgeDoPurgeGet(newEntry); |
e6ccf245 | 752 | else if (lookingforstore == 4) |
62e76326 | 753 | purgeDoPurgeHead(newEntry); |
e6ccf245 | 754 | else if (lookingforstore == 5) |
62e76326 | 755 | identifyFoundObject(newEntry); |
e6ccf245 | 756 | } |
757 | ||
758 | void | |
3b13a8fd | 759 | clientReplyContext::purgeFoundGet(StoreEntry *newEntry) |
e6ccf245 | 760 | { |
761 | if (newEntry->isNull()) { | |
62e76326 | 762 | lookingforstore = 2; |
763 | StoreEntry::getPublicByRequestMethod(this, http->request, METHOD_HEAD); | |
e6ccf245 | 764 | } else |
62e76326 | 765 | purgeFoundObject (newEntry); |
e6ccf245 | 766 | } |
767 | ||
768 | void | |
3b13a8fd | 769 | clientReplyContext::purgeFoundHead(StoreEntry *newEntry) |
e6ccf245 | 770 | { |
771 | if (newEntry->isNull()) | |
62e76326 | 772 | purgeDoMissPurge(); |
e6ccf245 | 773 | else |
62e76326 | 774 | purgeFoundObject (newEntry); |
e6ccf245 | 775 | } |
62e76326 | 776 | |
e6ccf245 | 777 | void |
3b13a8fd | 778 | clientReplyContext::purgeFoundObject(StoreEntry *entry) |
e6ccf245 | 779 | { |
780 | assert (entry && !entry->isNull()); | |
e4b9a2f0 | 781 | |
782 | if (EBIT_TEST(entry->flags, ENTRY_SPECIAL)) { | |
783 | http->logType = LOG_TCP_DENIED; | |
cc192b50 | 784 | ErrorState *err = clientBuildError(ERR_ACCESS_DENIED, HTTP_FORBIDDEN, NULL, http->getConn()->peer, http->request); |
e4b9a2f0 | 785 | startError(err); |
786 | return; | |
787 | } | |
788 | ||
62e76326 | 789 | StoreIOBuffer tempBuffer; |
790 | /* Swap in the metadata */ | |
86a2f789 | 791 | http->storeEntry(entry); |
34266cde | 792 | |
3d0ac046 | 793 | http->storeEntry()->lock(); |
3900307b | 794 | http->storeEntry()->createMemObject(http->uri, http->log_uri); |
34266cde | 795 | |
86a2f789 | 796 | http->storeEntry()->mem_obj->method = http->request->method; |
34266cde | 797 | |
86a2f789 | 798 | sc = storeClientListAdd(http->storeEntry(), this); |
34266cde | 799 | |
62e76326 | 800 | http->logType = LOG_TCP_HIT; |
34266cde | 801 | |
62e76326 | 802 | reqofs = 0; |
34266cde | 803 | |
62e76326 | 804 | tempBuffer.offset = http->out.offset; |
34266cde | 805 | |
0655fa4d | 806 | tempBuffer.length = next()->readBuffer.length; |
34266cde | 807 | |
0655fa4d | 808 | tempBuffer.data = next()->readBuffer.data; |
34266cde | 809 | |
86a2f789 | 810 | storeClientCopy(sc, http->storeEntry(), |
0655fa4d | 811 | tempBuffer, CacheHit, this); |
e6ccf245 | 812 | } |
813 | ||
814 | void | |
815 | clientReplyContext::purgeRequest() | |
edce4d98 | 816 | { |
bf8fe701 | 817 | debugs(88, 3, "Config2.onoff.enable_purge = " << |
818 | Config2.onoff.enable_purge); | |
62e76326 | 819 | |
edce4d98 | 820 | if (!Config2.onoff.enable_purge) { |
62e76326 | 821 | http->logType = LOG_TCP_DENIED; |
cc192b50 | 822 | ErrorState *err = clientBuildError(ERR_ACCESS_DENIED, HTTP_FORBIDDEN, NULL, http->getConn()->peer, http->request); |
0655fa4d | 823 | startError(err); |
62e76326 | 824 | return; |
edce4d98 | 825 | } |
62e76326 | 826 | |
edce4d98 | 827 | /* Release both IP cache */ |
cc192b50 | 828 | ipcacheInvalidate(http->request->GetHost()); |
edce4d98 | 829 | |
e6ccf245 | 830 | if (!http->flags.purging) |
62e76326 | 831 | purgeRequestFindObjectToPurge(); |
e6ccf245 | 832 | else |
62e76326 | 833 | purgeDoMissPurge(); |
e6ccf245 | 834 | } |
835 | ||
836 | void | |
837 | clientReplyContext::purgeDoMissPurge() | |
838 | { | |
29b8d8d6 | 839 | http->logType = LOG_TCP_MISS; |
e6ccf245 | 840 | lookingforstore = 3; |
3b13a8fd | 841 | StoreEntry::getPublicByRequestMethod(this,http->request, METHOD_GET); |
e6ccf245 | 842 | } |
843 | ||
844 | void | |
3b13a8fd | 845 | clientReplyContext::purgeDoPurgeGet(StoreEntry *newEntry) |
e6ccf245 | 846 | { |
847 | assert (newEntry); | |
848 | /* Move to new() when that is created */ | |
849 | purgeStatus = HTTP_NOT_FOUND; | |
850 | ||
851 | if (!newEntry->isNull()) { | |
62e76326 | 852 | /* Release the cached URI */ |
bf8fe701 | 853 | debugs(88, 4, "clientPurgeRequest: GET '" << newEntry->url() << "'" ); |
5f33b71d | 854 | newEntry->release(); |
62e76326 | 855 | purgeStatus = HTTP_OK; |
edce4d98 | 856 | } |
62e76326 | 857 | |
e6ccf245 | 858 | lookingforstore = 4; |
3b13a8fd | 859 | StoreEntry::getPublicByRequestMethod(this, http->request, METHOD_HEAD); |
e6ccf245 | 860 | } |
861 | ||
862 | void | |
3b13a8fd | 863 | clientReplyContext::purgeDoPurgeHead(StoreEntry *newEntry) |
e6ccf245 | 864 | { |
4fc0ac76 | 865 | if (newEntry && !newEntry->isNull()) { |
bf8fe701 | 866 | debugs(88, 4, "clientPurgeRequest: HEAD '" << newEntry->url() << "'" ); |
5f33b71d | 867 | newEntry->release(); |
62e76326 | 868 | purgeStatus = HTTP_OK; |
edce4d98 | 869 | } |
62e76326 | 870 | |
edce4d98 | 871 | /* And for Vary, release the base URI if none of the headers was included in the request */ |
62e76326 | 872 | |
edce4d98 | 873 | if (http->request->vary_headers |
62e76326 | 874 | && !strstr(http->request->vary_headers, "=")) { |
875 | StoreEntry *entry = storeGetPublic(urlCanonical(http->request), METHOD_GET); | |
876 | ||
877 | if (entry) { | |
bf8fe701 | 878 | debugs(88, 4, "clientPurgeRequest: Vary GET '" << entry->url() << "'" ); |
5f33b71d | 879 | entry->release(); |
62e76326 | 880 | purgeStatus = HTTP_OK; |
881 | } | |
882 | ||
883 | entry = storeGetPublic(urlCanonical(http->request), METHOD_HEAD); | |
884 | ||
885 | if (entry) { | |
bf8fe701 | 886 | debugs(88, 4, "clientPurgeRequest: Vary HEAD '" << entry->url() << "'" ); |
5f33b71d | 887 | entry->release(); |
62e76326 | 888 | purgeStatus = HTTP_OK; |
889 | } | |
edce4d98 | 890 | } |
62e76326 | 891 | |
edce4d98 | 892 | /* |
893 | * Make a new entry to hold the reply to be written | |
894 | * to the client. | |
895 | */ | |
528b2c61 | 896 | /* FIXME: This doesn't need to go through the store. Simply |
897 | * push down the client chain | |
898 | */ | |
0655fa4d | 899 | createStoreEntry(http->request->method, request_flags()); |
62e76326 | 900 | |
0655fa4d | 901 | triggerInitialStoreRead(); |
62e76326 | 902 | |
7dc5f514 | 903 | HttpReply *rep = new HttpReply; |
62e76326 | 904 | |
450e0c10 | 905 | HttpVersion version(1,0); |
62e76326 | 906 | |
7dc5f514 | 907 | rep->setHeaders(version, purgeStatus, NULL, NULL, 0, 0, -1); |
62e76326 | 908 | |
7dc5f514 | 909 | http->storeEntry()->replaceHttpReply(rep); |
62e76326 | 910 | |
86a2f789 | 911 | http->storeEntry()->complete(); |
edce4d98 | 912 | } |
913 | ||
914 | void | |
0655fa4d | 915 | clientReplyContext::traceReply(clientStreamNode * node) |
edce4d98 | 916 | { |
e6ccf245 | 917 | clientStreamNode *next = (clientStreamNode *)node->node.next->data; |
528b2c61 | 918 | StoreIOBuffer tempBuffer; |
0655fa4d | 919 | assert(http->request->max_forwards == 0); |
920 | createStoreEntry(http->request->method, request_flags()); | |
921 | tempBuffer.offset = next->readBuffer.offset + headers_sz; | |
c8be6d7b | 922 | tempBuffer.length = next->readBuffer.length; |
923 | tempBuffer.data = next->readBuffer.data; | |
86a2f789 | 924 | storeClientCopy(sc, http->storeEntry(), |
0655fa4d | 925 | tempBuffer, SendMoreData, this); |
d88e3c49 | 926 | http->storeEntry()->releaseRequest(); |
3900307b | 927 | http->storeEntry()->buffer(); |
7dc5f514 | 928 | HttpReply *rep = new HttpReply; |
450e0c10 | 929 | HttpVersion version(1,0); |
06a5ae20 | 930 | rep->setHeaders(version, HTTP_OK, NULL, "text/plain", |
5cafad19 | 931 | http->request->prefixLen(), 0, squid_curtime); |
db237875 | 932 | http->storeEntry()->replaceHttpReply(rep); |
5cafad19 | 933 | http->request->swapOut(http->storeEntry()); |
86a2f789 | 934 | http->storeEntry()->complete(); |
edce4d98 | 935 | } |
936 | ||
937 | #define SENDING_BODY 0 | |
938 | #define SENDING_HDRSONLY 1 | |
939 | int | |
0655fa4d | 940 | clientReplyContext::checkTransferDone() |
edce4d98 | 941 | { |
86a2f789 | 942 | StoreEntry *entry = http->storeEntry(); |
62e76326 | 943 | |
edce4d98 | 944 | if (entry == NULL) |
62e76326 | 945 | return 0; |
946 | ||
947 | /* | |
edce4d98 | 948 | * For now, 'done_copying' is used for special cases like |
949 | * Range and HEAD requests. | |
950 | */ | |
0655fa4d | 951 | if (http->flags.done_copying) |
62e76326 | 952 | return 1; |
953 | ||
edce4d98 | 954 | /* |
955 | * Handle STORE_OK objects. | |
956 | * objectLen(entry) will be set proprely. | |
957 | * RC: Does objectLen(entry) include the Headers? | |
0e3be1ea | 958 | * RC: Yes. |
edce4d98 | 959 | */ |
960 | if (entry->store_status == STORE_OK) { | |
0655fa4d | 961 | return storeOKTransferDone(); |
e39b9382 | 962 | } else { |
0655fa4d | 963 | return storeNotOKTransferDone(); |
edce4d98 | 964 | } |
e39b9382 | 965 | } |
966 | ||
967 | int | |
968 | clientReplyContext::storeOKTransferDone() const | |
969 | { | |
47f6e231 | 970 | if (http->out.offset >= http->storeEntry()->objectLen() - headers_sz) { |
971 | debugs(88,3,HERE << "storeOKTransferDone " << | |
972 | " out.offset=" << http->out.offset << | |
973 | " objectLen()=" << http->storeEntry()->objectLen() << | |
974 | " headers_sz=" << headers_sz); | |
62e76326 | 975 | return 1; |
47f6e231 | 976 | } |
62e76326 | 977 | |
e39b9382 | 978 | return 0; |
979 | } | |
980 | ||
981 | int | |
982 | clientReplyContext::storeNotOKTransferDone() const | |
983 | { | |
edce4d98 | 984 | /* |
985 | * Now, handle STORE_PENDING objects | |
986 | */ | |
86a2f789 | 987 | MemObject *mem = http->storeEntry()->mem_obj; |
edce4d98 | 988 | assert(mem != NULL); |
989 | assert(http->request != NULL); | |
0e3be1ea | 990 | /* mem->reply was wrong because it uses the UPSTREAM header length!!! */ |
0353e724 | 991 | HttpReply const *reply = mem->getReply(); |
62e76326 | 992 | |
e39b9382 | 993 | if (headers_sz == 0) |
62e76326 | 994 | /* haven't found end of headers yet */ |
995 | return 0; | |
e39b9382 | 996 | |
997 | int sending = SENDING_BODY; | |
62e76326 | 998 | |
e39b9382 | 999 | if (reply->sline.status == HTTP_NO_CONTENT || |
62e76326 | 1000 | reply->sline.status == HTTP_NOT_MODIFIED || |
1001 | reply->sline.status < HTTP_OK || | |
1002 | http->request->method == METHOD_HEAD) | |
1003 | sending = SENDING_HDRSONLY; | |
1004 | ||
edce4d98 | 1005 | /* |
1006 | * Figure out how much data we are supposed to send. | |
1007 | * If we are sending a body and we don't have a content-length, | |
1008 | * then we must wait for the object to become STORE_OK. | |
1009 | */ | |
0e3be1ea | 1010 | if (reply->content_length < 0) |
62e76326 | 1011 | return 0; |
e39b9382 | 1012 | |
47f6e231 | 1013 | int64_t expectedLength = reply->content_length + http->out.headers_sz; |
62e76326 | 1014 | |
e39b9382 | 1015 | if (http->out.size < expectedLength) |
62e76326 | 1016 | return 0; |
47f6e231 | 1017 | else { |
1018 | debugs(88,3,HERE << "storeNotOKTransferDone " << | |
1019 | " out.size=" << http->out.size << | |
1020 | " expectedLength=" << expectedLength); | |
62e76326 | 1021 | return 1; |
47f6e231 | 1022 | } |
edce4d98 | 1023 | } |
1024 | ||
1025 | ||
edce4d98 | 1026 | /* A write has completed, what is the next status based on the |
1027 | * canonical request data? | |
1028 | * 1 something is wrong | |
1029 | * 0 nothing is wrong. | |
1030 | * | |
1031 | */ | |
1032 | int | |
59a1efb2 | 1033 | clientHttpRequestStatus(int fd, ClientHttpRequest const *http) |
edce4d98 | 1034 | { |
47f6e231 | 1035 | #if SIZEOF_INT64_T == 4 |
edce4d98 | 1036 | if (http->out.size > 0x7FFF0000) { |
47f6e231 | 1037 | debugs(88, 1, "WARNING: closing FD " << fd << " to prevent out.size counter overflow"); |
cc192b50 | 1038 | debugs(88, 1, "\tclient " << http->getConn()->peer); |
47f6e231 | 1039 | debugs(88, 1, "\treceived " << http->out.size << " bytes"); |
1040 | debugs(88, 1, "\tURI " << http->log_uri); | |
62e76326 | 1041 | return 1; |
edce4d98 | 1042 | } |
62e76326 | 1043 | |
edce4d98 | 1044 | #endif |
47f6e231 | 1045 | #if SIZEOF_INT64_T == 4 |
edce4d98 | 1046 | if (http->out.offset > 0x7FFF0000) { |
3ec12e4a | 1047 | debugs(88, 1, "WARNING: closing FD " << fd < " to prevent out.offset counter overflow"); |
cc192b50 | 1048 | debugs(88, 1, "\tclient " << http->getConn()->peer); |
3ec12e4a | 1049 | debugs(88, 1, "\treceived " << http->out.size << " bytes, offset " << http->out.offset); |
1050 | debugs(88, 1, "\tURI " << http->log_uri); | |
62e76326 | 1051 | return 1; |
edce4d98 | 1052 | } |
62e76326 | 1053 | |
edce4d98 | 1054 | #endif |
1055 | return 0; | |
1056 | } | |
1057 | ||
62e76326 | 1058 | /* Preconditions: |
edce4d98 | 1059 | * *http is a valid structure. |
1060 | * fd is either -1, or an open fd. | |
1061 | * | |
1062 | * TODO: enumify this | |
1063 | * | |
1064 | * This function is used by any http request sink, to determine the status | |
1065 | * of the object. | |
1066 | */ | |
1067 | clientStream_status_t | |
59a1efb2 | 1068 | clientReplyStatus(clientStreamNode * aNode, ClientHttpRequest * http) |
edce4d98 | 1069 | { |
0655fa4d | 1070 | clientReplyContext *context = dynamic_cast<clientReplyContext *>(aNode->data.getRaw()); |
1071 | assert (context); | |
1072 | assert (context->http == http); | |
1073 | return context->replyStatus(); | |
1074 | } | |
1075 | ||
1076 | clientStream_status_t | |
1077 | clientReplyContext::replyStatus() | |
1078 | { | |
edce4d98 | 1079 | int done; |
1080 | /* Here because lower nodes don't need it */ | |
62e76326 | 1081 | |
3daaed1a | 1082 | if (http->storeEntry() == NULL) { |
1083 | debugs(88, 5, "clientReplyStatus: no storeEntry"); | |
62e76326 | 1084 | return STREAM_FAILED; /* yuck, but what can we do? */ |
3daaed1a | 1085 | } |
62e76326 | 1086 | |
3daaed1a | 1087 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) { |
62e76326 | 1088 | /* TODO: Could upstream read errors (result.flags.error) be |
1089 | * lost, and result in undersize requests being considered | |
1090 | * complete. Should we tcp reset such connections ? | |
1091 | */ | |
3daaed1a | 1092 | debugs(88, 5, "clientReplyStatus: aborted storeEntry"); |
62e76326 | 1093 | return STREAM_FAILED; |
3daaed1a | 1094 | } |
62e76326 | 1095 | |
0655fa4d | 1096 | if ((done = checkTransferDone()) != 0 || flags.complete) { |
bf8fe701 | 1097 | debugs(88, 5, "clientReplyStatus: transfer is DONE"); |
62e76326 | 1098 | /* Ok we're finished, but how? */ |
1099 | ||
06a5ae20 | 1100 | if (http->storeEntry()->getReply()->bodySize(http->request->method) < 0) { |
bf8fe701 | 1101 | debugs(88, 5, "clientReplyStatus: closing, content_length < 0"); |
62e76326 | 1102 | return STREAM_FAILED; |
1103 | } | |
1104 | ||
1105 | if (!done) { | |
bf8fe701 | 1106 | debugs(88, 5, "clientReplyStatus: closing, !done, but read 0 bytes"); |
62e76326 | 1107 | return STREAM_FAILED; |
1108 | } | |
1109 | ||
0655fa4d | 1110 | if (!http->gotEnough()) { |
bf8fe701 | 1111 | debugs(88, 5, "clientReplyStatus: client didn't get all it expected"); |
62e76326 | 1112 | return STREAM_UNPLANNED_COMPLETE; |
1113 | } | |
1114 | ||
1115 | if (http->request->flags.proxy_keepalive) { | |
bf8fe701 | 1116 | debugs(88, 5, "clientReplyStatus: stream complete and can keepalive"); |
62e76326 | 1117 | return STREAM_COMPLETE; |
1118 | } | |
1119 | ||
bf8fe701 | 1120 | debugs(88, 5, "clientReplyStatus: stream was not expected to complete!"); |
62e76326 | 1121 | return STREAM_UNPLANNED_COMPLETE; |
edce4d98 | 1122 | } |
62e76326 | 1123 | |
16611143 | 1124 | // XXX: Should this be checked earlier? We could return above w/o checking. |
1125 | if (reply->receivedBodyTooLarge(*http->request, http->out.offset - 4096)) { | |
b51aec66 | 1126 | /* 4096 is a margin for the HTTP headers included in out.offset */ |
bf8fe701 | 1127 | debugs(88, 5, "clientReplyStatus: client reply body is too large"); |
62e76326 | 1128 | return STREAM_FAILED; |
0e3be1ea | 1129 | } |
62e76326 | 1130 | |
edce4d98 | 1131 | return STREAM_NONE; |
1132 | } | |
1133 | ||
62e76326 | 1134 | /* Responses with no body will not have a content-type header, |
edce4d98 | 1135 | * which breaks the rep_mime_type acl, which |
1136 | * coincidentally, is the most common acl for reply access lists. | |
1137 | * A better long term fix for this is to allow acl matchs on the various | |
1138 | * status codes, and then supply a default ruleset that puts these | |
1139 | * codes before any user defines access entries. That way the user | |
1140 | * can choose to block these responses where appropriate, but won't get | |
1141 | * mysterious breakages. | |
1142 | */ | |
0655fa4d | 1143 | bool |
1144 | clientReplyContext::alwaysAllowResponse(http_status sline) const | |
edce4d98 | 1145 | { |
4ef4b952 | 1146 | bool result; |
1147 | ||
edce4d98 | 1148 | switch (sline) { |
62e76326 | 1149 | |
edce4d98 | 1150 | case HTTP_CONTINUE: |
62e76326 | 1151 | |
edce4d98 | 1152 | case HTTP_SWITCHING_PROTOCOLS: |
62e76326 | 1153 | |
edce4d98 | 1154 | case HTTP_PROCESSING: |
62e76326 | 1155 | |
edce4d98 | 1156 | case HTTP_NO_CONTENT: |
62e76326 | 1157 | |
edce4d98 | 1158 | case HTTP_NOT_MODIFIED: |
4ef4b952 | 1159 | result = true; |
62e76326 | 1160 | break; |
1161 | ||
edce4d98 | 1162 | default: |
4ef4b952 | 1163 | result = false; |
edce4d98 | 1164 | } |
4ef4b952 | 1165 | |
1166 | return result; | |
edce4d98 | 1167 | } |
1168 | ||
1169 | /* | |
1170 | * filters out unwanted entries from original reply header | |
1171 | * adds extra entries if we have more info than origin server | |
1172 | * adds Squid specific entries | |
1173 | */ | |
0655fa4d | 1174 | void |
1175 | clientReplyContext::buildReplyHeader() | |
edce4d98 | 1176 | { |
7dc5f514 | 1177 | HttpHeader *hdr = &reply->header; |
c8be6d7b | 1178 | int is_hit = logTypeIsATcpHit(http->logType); |
190154cf | 1179 | HttpRequest *request = http->request; |
edce4d98 | 1180 | #if DONT_FILTER_THESE |
1181 | /* but you might want to if you run Squid as an HTTP accelerator */ | |
a9925b40 | 1182 | /* hdr->delById(HDR_ACCEPT_RANGES); */ |
1183 | hdr->delById(HDR_ETAG); | |
edce4d98 | 1184 | #endif |
62e76326 | 1185 | |
edce4d98 | 1186 | if (is_hit) |
a9925b40 | 1187 | hdr->delById(HDR_SET_COOKIE); |
62e76326 | 1188 | |
dcf3665b AJ |
1189 | // if there is not configured a peer proxy with login=PASS option enabled |
1190 | // remove the Proxy-Authenticate header | |
1191 | if ( !(request->peer_login && strcmp(request->peer_login,"PASS") ==0)) | |
1192 | reply->header.delById(HDR_PROXY_AUTHENTICATE); | |
1193 | ||
2cdeea82 | 1194 | reply->header.removeHopByHopEntries(); |
62e76326 | 1195 | |
1196 | // if (request->range) | |
7dc5f514 | 1197 | // clientBuildRangeHeader(http, reply); |
edce4d98 | 1198 | /* |
1199 | * Add a estimated Age header on cache hits. | |
1200 | */ | |
1201 | if (is_hit) { | |
62e76326 | 1202 | /* |
1203 | * Remove any existing Age header sent by upstream caches | |
1204 | * (note that the existing header is passed along unmodified | |
1205 | * on cache misses) | |
1206 | */ | |
a9925b40 | 1207 | hdr->delById(HDR_AGE); |
62e76326 | 1208 | /* |
1209 | * This adds the calculated object age. Note that the details of the | |
1210 | * age calculation is performed by adjusting the timestamp in | |
3900307b | 1211 | * StoreEntry::timestampsSet(), not here. |
62e76326 | 1212 | * |
1213 | * BROWSER WORKAROUND: IE sometimes hangs when receiving a 0 Age | |
1214 | * header, so don't use it unless there is a age to report. Please | |
1215 | * note that Age is only used to make a conservative estimation of | |
1216 | * the objects age, so a Age: 0 header does not add any useful | |
1217 | * information to the reply in any case. | |
1218 | */ | |
1219 | ||
86a2f789 | 1220 | if (NULL == http->storeEntry()) |
62e76326 | 1221 | (void) 0; |
86a2f789 | 1222 | else if (http->storeEntry()->timestamp < 0) |
62e76326 | 1223 | (void) 0; |
bbe58ab5 | 1224 | |
1225 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_SPECIAL)) { | |
a9925b40 | 1226 | hdr->delById(HDR_DATE); |
1227 | hdr->insertTime(HDR_DATE, squid_curtime); | |
bbe58ab5 | 1228 | } else if (http->storeEntry()->timestamp < squid_curtime) { |
a9925b40 | 1229 | hdr->putInt(HDR_AGE, |
1230 | squid_curtime - http->storeEntry()->timestamp); | |
62e76326 | 1231 | /* Signal old objects. NB: rfc 2616 is not clear, |
1232 | * by implication, on whether we should do this to all | |
1233 | * responses, or only cache hits. | |
1234 | * 14.46 states it ONLY applys for heuristically caclulated | |
1235 | * freshness values, 13.2.4 doesn't specify the same limitation. | |
1236 | * We interpret RFC 2616 under the combination. | |
1237 | */ | |
1238 | /* TODO: if maxage or s-maxage is present, don't do this */ | |
1239 | ||
86a2f789 | 1240 | if (squid_curtime - http->storeEntry()->timestamp >= 86400) { |
62e76326 | 1241 | char tempbuf[512]; |
1242 | snprintf (tempbuf, sizeof(tempbuf), "%s %s %s", | |
1243 | "113", ThisCache, | |
1244 | "This cache hit is still fresh and more than 1 day old"); | |
a9925b40 | 1245 | hdr->putStr(HDR_WARNING, tempbuf); |
62e76326 | 1246 | } |
1247 | } | |
528b2c61 | 1248 | |
edce4d98 | 1249 | } |
62e76326 | 1250 | |
0bd9aa82 | 1251 | /* Filter unproxyable authentication types */ |
dcf3665b | 1252 | |
ddd31ed3 | 1253 | if (http->logType != LOG_TCP_DENIED && |
dcf3665b | 1254 | (hdr->has(HDR_WWW_AUTHENTICATE) || hdr->has(HDR_PROXY_AUTHENTICATE))) { |
62e76326 | 1255 | HttpHeaderPos pos = HttpHeaderInitPos; |
1256 | HttpHeaderEntry *e; | |
1257 | ||
ba9fb01d | 1258 | int headers_deleted = 0; |
a9925b40 | 1259 | while ((e = hdr->getEntry(&pos))) { |
62e76326 | 1260 | if (e->id == HDR_WWW_AUTHENTICATE || e->id == HDR_PROXY_AUTHENTICATE) { |
30abd221 | 1261 | const char *value = e->value.buf(); |
62e76326 | 1262 | |
1263 | if ((strncasecmp(value, "NTLM", 4) == 0 && | |
1264 | (value[4] == '\0' || value[4] == ' ')) | |
1265 | || | |
1266 | (strncasecmp(value, "Negotiate", 9) == 0 && | |
1267 | (value[9] == '\0' || value[9] == ' '))) | |
ba9fb01d | 1268 | hdr->delAt(pos, headers_deleted); |
62e76326 | 1269 | } |
1270 | } | |
ba9fb01d | 1271 | if (headers_deleted) |
1272 | hdr->refreshMask(); | |
0bd9aa82 | 1273 | } |
62e76326 | 1274 | |
edce4d98 | 1275 | /* Handle authentication headers */ |
dcf3665b AJ |
1276 | if(http->logType == LOG_TCP_DENIED && |
1277 | ( reply->sline.status == HTTP_PROXY_AUTHENTICATION_REQUIRED || | |
1278 | reply->sline.status == HTTP_UNAUTHORIZED) | |
1279 | ){ | |
1280 | /* Add authentication header */ | |
1281 | /*! \todo alter errorstate to be accel on|off aware. The 0 on the next line | |
1282 | * depends on authenticate behaviour: all schemes to date send no extra | |
1283 | * data on 407/401 responses, and do not check the accel state on 401/407 | |
1284 | * responses | |
1285 | */ | |
1286 | authenticateFixHeader(reply, request->auth_user_request, request, 0, 1); | |
1287 | } | |
1288 | else if (request->auth_user_request) | |
7dc5f514 | 1289 | authenticateFixHeader(reply, request->auth_user_request, request, |
62e76326 | 1290 | http->flags.accel, 0); |
1291 | ||
edce4d98 | 1292 | /* Append X-Cache */ |
1293 | httpHeaderPutStrf(hdr, HDR_X_CACHE, "%s from %s", | |
62e76326 | 1294 | is_hit ? "HIT" : "MISS", getMyHostname()); |
1295 | ||
edce4d98 | 1296 | #if USE_CACHE_DIGESTS |
1297 | /* Append X-Cache-Lookup: -- temporary hack, to be removed @?@ @?@ */ | |
1298 | httpHeaderPutStrf(hdr, HDR_X_CACHE_LOOKUP, "%s from %s:%d", | |
0655fa4d | 1299 | lookup_type ? lookup_type : "NONE", |
62e76326 | 1300 | getMyHostname(), getMyPort()); |
1301 | ||
edce4d98 | 1302 | #endif |
62e76326 | 1303 | |
f529bb20 | 1304 | /* Check whether we should send keep-alive */ |
1305 | // TODO: disable proxy_keepalive only once | |
1306 | ||
7dc5f514 | 1307 | if (reply->bodySize(request->method) < 0) { |
bf8fe701 | 1308 | debugs(88, 3, "clientBuildReplyHeader: can't keep-alive, unknown body size" ); |
62e76326 | 1309 | request->flags.proxy_keepalive = 0; |
edce4d98 | 1310 | } |
62e76326 | 1311 | |
f5e45ad8 | 1312 | if (fdUsageHigh()&& !request->flags.must_keepalive) { |
bf8fe701 | 1313 | debugs(88, 3, "clientBuildReplyHeader: Not many unused FDs, can't keep-alive"); |
a1ca9253 | 1314 | request->flags.proxy_keepalive = 0; |
1315 | } | |
1316 | ||
58850d15 | 1317 | if (!Config.onoff.error_pconns && reply->sline.status >= 400 && !request->flags.must_keepalive) { |
bf8fe701 | 1318 | debugs(33, 3, "clientBuildReplyHeader: Error, don't keep-alive"); |
58850d15 | 1319 | request->flags.proxy_keepalive = 0; |
1320 | } | |
1321 | ||
f5e45ad8 | 1322 | if (!Config.onoff.client_pconns && !request->flags.must_keepalive) |
1323 | request->flags.proxy_keepalive = 0; | |
1324 | ||
f529bb20 | 1325 | if (request->flags.proxy_keepalive && shutting_down) { |
1326 | debugs(88, 3, "clientBuildReplyHeader: Shutting down, don't keep-alive."); | |
1327 | request->flags.proxy_keepalive = 0; | |
1328 | } | |
1329 | ||
4dea3fdd | 1330 | /* Append VIA */ |
92caea77 | 1331 | if (Config.onoff.via) { |
62e76326 | 1332 | LOCAL_ARRAY(char, bbuf, MAX_URL + 32); |
30abd221 | 1333 | String strVia; |
aaac15e6 | 1334 | hdr->getList(HDR_VIA, &strVia); |
62e76326 | 1335 | snprintf(bbuf, sizeof(bbuf), "%d.%d %s", |
7dc5f514 | 1336 | reply->sline.version.major, |
1337 | reply->sline.version.minor, | |
62e76326 | 1338 | ThisCache); |
1339 | strListAdd(&strVia, bbuf, ','); | |
a9925b40 | 1340 | hdr->delById(HDR_VIA); |
30abd221 | 1341 | hdr->putStr(HDR_VIA, strVia.buf()); |
c8be6d7b | 1342 | } |
edce4d98 | 1343 | /* Signal keep-alive if needed */ |
a9925b40 | 1344 | hdr->putStr(http->flags.accel ? HDR_CONNECTION : HDR_PROXY_CONNECTION, |
1345 | request->flags.proxy_keepalive ? "keep-alive" : "close"); | |
62e76326 | 1346 | |
edce4d98 | 1347 | #if ADD_X_REQUEST_URI |
1348 | /* | |
1349 | * Knowing the URI of the request is useful when debugging persistent | |
1350 | * connections in a client; we cannot guarantee the order of http headers, | |
1351 | * but X-Request-URI is likely to be the very last header to ease use from a | |
1352 | * debugger [hdr->entries.count-1]. | |
1353 | */ | |
a9925b40 | 1354 | hdr->putStr(HDR_X_REQUEST_URI, |
1355 | http->memOjbect()->url ? http->memObject()->url : http->uri); | |
62e76326 | 1356 | |
edce4d98 | 1357 | #endif |
62e76326 | 1358 | |
8c01ada0 | 1359 | httpHdrMangleList(hdr, request, ROR_REPLY); |
edce4d98 | 1360 | } |
1361 | ||
1362 | ||
0655fa4d | 1363 | void |
b297bcd0 | 1364 | clientReplyContext::cloneReply() |
edce4d98 | 1365 | { |
7dc5f514 | 1366 | assert(reply == NULL); |
0655fa4d | 1367 | |
b297bcd0 | 1368 | HttpReply *rep = http->storeEntry()->getReply()->clone(); |
7dc5f514 | 1369 | |
1370 | reply = HTTPMSGLOCK(rep); | |
1371 | ||
0655fa4d | 1372 | /* enforce 1.0 reply version */ |
7dc5f514 | 1373 | reply->sline.version = HttpVersion(1,0); |
0655fa4d | 1374 | |
1375 | /* do header conversions */ | |
1376 | buildReplyHeader(); | |
edce4d98 | 1377 | } |
1378 | ||
e6ccf245 | 1379 | void |
1380 | clientReplyContext::identifyStoreObject() | |
edce4d98 | 1381 | { |
190154cf | 1382 | HttpRequest *r = http->request; |
62e76326 | 1383 | |
e6ccf245 | 1384 | if (r->flags.cachable || r->flags.internal) { |
62e76326 | 1385 | lookingforstore = 5; |
1386 | StoreEntry::getPublicByRequest (this, r); | |
559da936 | 1387 | } else { |
62e76326 | 1388 | identifyFoundObject (NullStoreEntry::getInstance()); |
559da936 | 1389 | } |
e6ccf245 | 1390 | } |
1391 | ||
1392 | void | |
1393 | clientReplyContext::identifyFoundObject(StoreEntry *newEntry) | |
1394 | { | |
1395 | StoreEntry *e = newEntry; | |
190154cf | 1396 | HttpRequest *r = http->request; |
62e76326 | 1397 | |
e6ccf245 | 1398 | if (e->isNull()) { |
86a2f789 | 1399 | http->storeEntry(NULL); |
e6ccf245 | 1400 | } else { |
86a2f789 | 1401 | http->storeEntry(e); |
e6ccf245 | 1402 | } |
62e76326 | 1403 | |
86a2f789 | 1404 | e = http->storeEntry(); |
a12a049a | 1405 | /* Release IP-cache entries on reload */ |
1406 | ||
1407 | if (r->flags.nocache) { | |
1408 | ||
1409 | #if USE_DNSSERVERS | |
62e76326 | 1410 | |
cc192b50 | 1411 | ipcacheInvalidate(r->GetHost()); |
62e76326 | 1412 | |
a12a049a | 1413 | #else |
1414 | ||
cc192b50 | 1415 | ipcacheInvalidateNegative(r->GetHost()); |
a12a049a | 1416 | |
1417 | #endif /* USE_DNSSERVERS */ | |
1418 | ||
1419 | } | |
1420 | ||
edce4d98 | 1421 | #if HTTP_VIOLATIONS |
62e76326 | 1422 | |
a12a049a | 1423 | else if (r->flags.nocache_hack) { |
1424 | ||
1425 | #if USE_DNSSERVERS | |
1426 | ||
cc192b50 | 1427 | ipcacheInvalidate(r->GetHost()); |
62e76326 | 1428 | |
a12a049a | 1429 | #else |
1430 | ||
cc192b50 | 1431 | ipcacheInvalidateNegative(r->GetHost()); |
a12a049a | 1432 | |
1433 | #endif /* USE_DNSSERVERS */ | |
1434 | ||
1435 | } | |
1436 | ||
1437 | #endif /* HTTP_VIOLATIONS */ | |
edce4d98 | 1438 | #if USE_CACHE_DIGESTS |
62e76326 | 1439 | |
86a2f789 | 1440 | lookup_type = http->storeEntry() ? "HIT" : "MISS"; |
62e76326 | 1441 | |
edce4d98 | 1442 | #endif |
62e76326 | 1443 | |
86a2f789 | 1444 | if (NULL == http->storeEntry()) { |
62e76326 | 1445 | /* this object isn't in the cache */ |
bf8fe701 | 1446 | debugs(85, 3, "clientProcessRequest2: storeGet() MISS"); |
62e76326 | 1447 | http->logType = LOG_TCP_MISS; |
1448 | doGetMoreData(); | |
1449 | return; | |
edce4d98 | 1450 | } |
62e76326 | 1451 | |
edce4d98 | 1452 | if (Config.onoff.offline) { |
bf8fe701 | 1453 | debugs(85, 3, "clientProcessRequest2: offline HIT"); |
62e76326 | 1454 | http->logType = LOG_TCP_HIT; |
1455 | doGetMoreData(); | |
1456 | return; | |
edce4d98 | 1457 | } |
62e76326 | 1458 | |
edce4d98 | 1459 | if (http->redirect.status) { |
62e76326 | 1460 | /* force this to be a miss */ |
86a2f789 | 1461 | http->storeEntry(NULL); |
62e76326 | 1462 | http->logType = LOG_TCP_MISS; |
1463 | doGetMoreData(); | |
1464 | return; | |
edce4d98 | 1465 | } |
62e76326 | 1466 | |
3900307b | 1467 | if (!e->validToSend()) { |
bf8fe701 | 1468 | debugs(85, 3, "clientProcessRequest2: !storeEntryValidToSend MISS" ); |
86a2f789 | 1469 | http->storeEntry(NULL); |
62e76326 | 1470 | http->logType = LOG_TCP_MISS; |
1471 | doGetMoreData(); | |
1472 | return; | |
edce4d98 | 1473 | } |
62e76326 | 1474 | |
edce4d98 | 1475 | if (EBIT_TEST(e->flags, ENTRY_SPECIAL)) { |
62e76326 | 1476 | /* Special entries are always hits, no matter what the client says */ |
bf8fe701 | 1477 | debugs(85, 3, "clientProcessRequest2: ENTRY_SPECIAL HIT"); |
62e76326 | 1478 | http->logType = LOG_TCP_HIT; |
1479 | doGetMoreData(); | |
1480 | return; | |
edce4d98 | 1481 | } |
62e76326 | 1482 | |
edce4d98 | 1483 | if (r->flags.nocache) { |
bf8fe701 | 1484 | debugs(85, 3, "clientProcessRequest2: no-cache REFRESH MISS"); |
86a2f789 | 1485 | http->storeEntry(NULL); |
62e76326 | 1486 | http->logType = LOG_TCP_CLIENT_REFRESH_MISS; |
1487 | doGetMoreData(); | |
1488 | return; | |
edce4d98 | 1489 | } |
62e76326 | 1490 | |
bf8fe701 | 1491 | debugs(85, 3, "clientProcessRequest2: default HIT"); |
e6ccf245 | 1492 | http->logType = LOG_TCP_HIT; |
1493 | doGetMoreData(); | |
edce4d98 | 1494 | } |
1495 | ||
1496 | /* Request more data from the store for the client Stream | |
1497 | * This is *the* entry point to this module. | |
1498 | * | |
1499 | * Preconditions: | |
1500 | * This is the head of the list. | |
1501 | * There is at least one more node. | |
1502 | * data context is not null | |
1503 | */ | |
1504 | void | |
59a1efb2 | 1505 | clientGetMoreData(clientStreamNode * aNode, ClientHttpRequest * http) |
edce4d98 | 1506 | { |
edce4d98 | 1507 | /* Test preconditions */ |
e6ccf245 | 1508 | assert(aNode != NULL); |
1509 | assert(cbdataReferenceValid(aNode)); | |
e6ccf245 | 1510 | assert(aNode->node.prev == NULL); |
1511 | assert(aNode->node.next != NULL); | |
0655fa4d | 1512 | clientReplyContext *context = dynamic_cast<clientReplyContext *>(aNode->data.getRaw()); |
1513 | assert (context); | |
edce4d98 | 1514 | assert(context->http == http); |
1515 | ||
559da936 | 1516 | |
0655fa4d | 1517 | clientStreamNode *next = ( clientStreamNode *)aNode->node.next->data; |
62e76326 | 1518 | |
edce4d98 | 1519 | if (!context->ourNode) |
62e76326 | 1520 | context->ourNode = aNode; |
1521 | ||
e6ccf245 | 1522 | /* no cbdatareference, this is only used once, and safely */ |
edce4d98 | 1523 | if (context->flags.storelogiccomplete) { |
62e76326 | 1524 | StoreIOBuffer tempBuffer; |
1525 | tempBuffer.offset = next->readBuffer.offset + context->headers_sz; | |
1526 | tempBuffer.length = next->readBuffer.length; | |
1527 | tempBuffer.data = next->readBuffer.data; | |
1528 | ||
86a2f789 | 1529 | storeClientCopy(context->sc, http->storeEntry(), |
0655fa4d | 1530 | tempBuffer, clientReplyContext::SendMoreData, context); |
62e76326 | 1531 | return; |
edce4d98 | 1532 | } |
62e76326 | 1533 | |
edce4d98 | 1534 | if (context->http->request->method == METHOD_PURGE) { |
62e76326 | 1535 | context->purgeRequest(); |
1536 | return; | |
edce4d98 | 1537 | } |
62e76326 | 1538 | |
edce4d98 | 1539 | if (context->http->request->method == METHOD_TRACE) { |
62e76326 | 1540 | if (context->http->request->max_forwards == 0) { |
0655fa4d | 1541 | context->traceReply(aNode); |
62e76326 | 1542 | return; |
1543 | } | |
1544 | ||
1545 | /* continue forwarding, not finished yet. */ | |
1546 | http->logType = LOG_TCP_MISS; | |
1547 | ||
1548 | context->doGetMoreData(); | |
edce4d98 | 1549 | } else |
62e76326 | 1550 | context->identifyStoreObject(); |
e6ccf245 | 1551 | } |
1552 | ||
1553 | void | |
1554 | clientReplyContext::doGetMoreData() | |
1555 | { | |
edce4d98 | 1556 | /* We still have to do store logic processing - vary, cache hit etc */ |
86a2f789 | 1557 | if (http->storeEntry() != NULL) { |
62e76326 | 1558 | /* someone found the object in the cache for us */ |
1559 | StoreIOBuffer tempBuffer; | |
34266cde | 1560 | |
3d0ac046 | 1561 | http->storeEntry()->lock(); |
62e76326 | 1562 | |
86a2f789 | 1563 | if (http->storeEntry()->mem_obj == NULL) { |
62e76326 | 1564 | /* |
1565 | * This if-block exists because we don't want to clobber | |
1566 | * a preexiting mem_obj->method value if the mem_obj | |
1567 | * already exists. For example, when a HEAD request | |
1568 | * is a cache hit for a GET response, we want to keep | |
1569 | * the method as GET. | |
1570 | */ | |
3900307b | 1571 | http->storeEntry()->createMemObject(http->uri, http->log_uri); |
86a2f789 | 1572 | http->storeEntry()->mem_obj->method = |
62e76326 | 1573 | http->request->method; |
1574 | } | |
1575 | ||
86a2f789 | 1576 | sc = storeClientListAdd(http->storeEntry(), this); |
edce4d98 | 1577 | #if DELAY_POOLS |
62e76326 | 1578 | |
1579 | sc->setDelayId(DelayId::DelayClient(http)); | |
edce4d98 | 1580 | #endif |
62e76326 | 1581 | |
1582 | assert(http->logType == LOG_TCP_HIT); | |
1583 | reqofs = 0; | |
1584 | /* guarantee nothing has been sent yet! */ | |
1585 | assert(http->out.size == 0); | |
1586 | assert(http->out.offset == 0); | |
b86ab75b AJ |
1587 | #if USE_ZPH_QOS |
1588 | if(Config.zph_tos_local || Config.zph_tos_peer || | |
1589 | (Config.onoff.zph_preserve_miss_tos && Config.zph_preserve_miss_tos_mask) ) | |
1590 | { | |
1591 | int need_change = 0; | |
1592 | int hit = 0; | |
1593 | int tos = 0; | |
1594 | int tos_old = 0; | |
1595 | int tos_len = sizeof(tos_old); | |
1596 | int res; | |
1597 | ||
1598 | if (Config.zph_tos_local) { | |
1599 | /* local hit */ | |
1600 | hit = 1; | |
1601 | tos = Config.zph_tos_local; | |
1602 | } | |
1603 | else if(Config.zph_tos_peer && | |
1604 | (http->request->hier.code==SIBLING_HIT || | |
1605 | (Config.onoff.zph_tos_parent && http->request->hier.code==PARENT_HIT ) ) ) | |
1606 | { | |
1607 | /* sibling or parent hit */ | |
1608 | hit = 1; | |
1609 | tos = Config.zph_tos_peer; | |
1610 | } | |
1611 | ||
1612 | if(http->request->flags.proxy_keepalive) { | |
1613 | res = getsockopt(http->getConn()->fd, IPPROTO_IP, IP_TOS, &tos_old, (socklen_t*)&tos_len); | |
1614 | if (res < 0) { | |
1615 | debugs(33, 1, "ZPH: error in getsockopt(IP_TOS) on keepalived FD "<< http->getConn()->fd << " " << xstrerror()); | |
1616 | } | |
1617 | else if (hit && tos_old != tos) { | |
1618 | /* HIT: 1-st request, or previous was MISS, | |
1619 | * or local/parent hit change. | |
1620 | */ | |
1621 | need_change = 1; | |
1622 | } | |
1623 | } | |
1624 | else if (hit) { | |
1625 | /* no keepalive */ | |
1626 | need_change = 1; | |
1627 | } | |
1628 | if(need_change) { | |
1629 | comm_set_tos(http->getConn()->fd,tos); | |
1630 | } | |
1631 | } | |
1632 | #endif /* USE_ZPH_QOS */ | |
1633 | ||
62e76326 | 1634 | tempBuffer.offset = reqofs; |
1635 | tempBuffer.length = getNextNode()->readBuffer.length; | |
1636 | tempBuffer.data = getNextNode()->readBuffer.data; | |
559da936 | 1637 | storeClientCopy(sc, http->storeEntry(), tempBuffer, CacheHit, this); |
edce4d98 | 1638 | } else { |
62e76326 | 1639 | /* MISS CASE, http->logType is already set! */ |
0655fa4d | 1640 | processMiss(); |
edce4d98 | 1641 | } |
1642 | } | |
1643 | ||
1644 | /* the next node has removed itself from the stream. */ | |
1645 | void | |
59a1efb2 | 1646 | clientReplyDetach(clientStreamNode * node, ClientHttpRequest * http) |
edce4d98 | 1647 | { |
1648 | /* detach from the stream */ | |
edce4d98 | 1649 | clientStreamDetach(node, http); |
1650 | } | |
1651 | ||
1652 | /* | |
1653 | * accepts chunk of a http message in buf, parses prefix, filters headers and | |
1654 | * such, writes processed message to the message recipient | |
1655 | */ | |
1656 | void | |
0655fa4d | 1657 | clientReplyContext::SendMoreData(void *data, StoreIOBuffer result) |
edce4d98 | 1658 | { |
e6ccf245 | 1659 | clientReplyContext *context = static_cast<clientReplyContext *>(data); |
528b2c61 | 1660 | context->sendMoreData (result); |
1661 | } | |
1662 | ||
1663 | void | |
1664 | clientReplyContext::makeThisHead() | |
1665 | { | |
1666 | /* At least, I think thats what this does */ | |
1667 | dlinkDelete(&http->active, &ClientActiveRequests); | |
1668 | dlinkAdd(http, &http->active, &ClientActiveRequests); | |
1669 | } | |
1670 | ||
1671 | bool | |
1672 | clientReplyContext::errorInStream(StoreIOBuffer const &result, size_t const &sizeToProcess)const | |
1673 | { | |
1674 | return /* aborted request */ | |
86a2f789 | 1675 | (http->storeEntry() && EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) || |
62e76326 | 1676 | /* Upstream read error */ (result.flags.error) || |
1677 | /* Upstream EOF */ (sizeToProcess == 0); | |
528b2c61 | 1678 | } |
1679 | ||
1680 | void | |
1681 | clientReplyContext::sendStreamError(StoreIOBuffer const &result) | |
1682 | { | |
1683 | /* call clientWriteComplete so the client socket gets closed */ | |
1684 | /* We call into the stream, because we don't know that there is a | |
1685 | * client socket! | |
1686 | */ | |
bf8fe701 | 1687 | debugs(88, 5, "clientReplyContext::sendStreamError: A stream error has occured, marking as complete and sending no data."); |
528b2c61 | 1688 | StoreIOBuffer tempBuffer; |
1689 | flags.complete = 1; | |
1690 | tempBuffer.flags.error = result.flags.error; | |
1691 | clientStreamCallback((clientStreamNode*)http->client_stream.head->data, http, NULL, | |
62e76326 | 1692 | tempBuffer); |
528b2c61 | 1693 | } |
1694 | ||
1695 | void | |
1696 | clientReplyContext::pushStreamData(StoreIOBuffer const &result, char *source) | |
1697 | { | |
1698 | StoreIOBuffer tempBuffer; | |
62e76326 | 1699 | |
528b2c61 | 1700 | if (result.length == 0) { |
bf8fe701 | 1701 | debugs(88, 5, "clientReplyContext::pushStreamData: marking request as complete due to 0 length store result"); |
62e76326 | 1702 | flags.complete = 1; |
528b2c61 | 1703 | } |
62e76326 | 1704 | |
43ae1d95 | 1705 | assert(result.offset - headers_sz == next()->readBuffer.offset); |
528b2c61 | 1706 | tempBuffer.offset = result.offset - headers_sz; |
1707 | tempBuffer.length = result.length; | |
62e76326 | 1708 | |
43ae1d95 | 1709 | if (tempBuffer.length) |
1710 | tempBuffer.data = source; | |
62e76326 | 1711 | |
528b2c61 | 1712 | clientStreamCallback((clientStreamNode*)http->client_stream.head->data, http, NULL, |
62e76326 | 1713 | tempBuffer); |
528b2c61 | 1714 | } |
1715 | ||
1716 | clientStreamNode * | |
1717 | clientReplyContext::next() const | |
1718 | { | |
1719 | assert ( (clientStreamNode*)http->client_stream.head->next->data == getNextNode()); | |
1720 | return getNextNode(); | |
1721 | } | |
1722 | ||
b51aec66 | 1723 | void |
16611143 | 1724 | clientReplyContext::sendBodyTooLargeError() |
b51aec66 | 1725 | { |
16611143 | 1726 | IPAddress tmp_noaddr; tmp_noaddr.SetNoAddr(); // TODO: make a global const |
1727 | ErrorState *err = clientBuildError(ERR_TOO_BIG, HTTP_FORBIDDEN, NULL, | |
1728 | http->getConn() != NULL ? http->getConn()->peer : tmp_noaddr, | |
1729 | http->request); | |
1730 | removeClientStoreReference(&(sc), http); | |
1731 | HTTPMSGUNLOCK(reply); | |
1732 | startError(err); | |
1733 | ||
b51aec66 | 1734 | } |
1735 | ||
4993f571 | 1736 | void |
1737 | clientReplyContext::processReplyAccess () | |
1738 | { | |
7dc5f514 | 1739 | assert(reply); |
230a8cc6 | 1740 | /* Dont't block our own responses or HTTP status messages */ |
16611143 | 1741 | if (http->logType == LOG_TCP_DENIED || |
1742 | http->logType == LOG_TCP_DENIED_REPLY || | |
1743 | alwaysAllowResponse(reply->sline.status)) { | |
acbf9428 | 1744 | headers_sz = reply->hdr_sz; |
230a8cc6 | 1745 | processReplyAccessResult(1); |
1746 | return; | |
1747 | } | |
16611143 | 1748 | |
1749 | if (reply->expectedBodyTooLarge(*http->request)) { | |
1750 | sendBodyTooLargeError(); | |
62e76326 | 1751 | return; |
1752 | } | |
1753 | ||
7dc5f514 | 1754 | headers_sz = reply->hdr_sz; |
230a8cc6 | 1755 | |
1756 | if (!Config.accessList.reply) { | |
1757 | processReplyAccessResult(1); | |
1758 | return; | |
1759 | } | |
1760 | ||
62e76326 | 1761 | ACLChecklist *replyChecklist; |
1762 | replyChecklist = clientAclChecklistCreate(Config.accessList.reply, http); | |
7dc5f514 | 1763 | replyChecklist->reply = HTTPMSGLOCK(reply); |
0655fa4d | 1764 | replyChecklist->nonBlockingCheck(ProcessReplyAccessResult, this); |
4993f571 | 1765 | } |
1766 | ||
1767 | void | |
0655fa4d | 1768 | clientReplyContext::ProcessReplyAccessResult (int rv, void *voidMe) |
4993f571 | 1769 | { |
1770 | clientReplyContext *me = static_cast<clientReplyContext *>(voidMe); | |
0655fa4d | 1771 | me->processReplyAccessResult(rv); |
4993f571 | 1772 | } |
1773 | ||
1774 | void | |
0655fa4d | 1775 | clientReplyContext::processReplyAccessResult(bool accessAllowed) |
4993f571 | 1776 | { |
60745f24 | 1777 | debugs(88, 2, "The reply for " << RequestMethodStr(http->request->method) |
bf8fe701 | 1778 | << " " << http->uri << " is " |
1779 | << ( accessAllowed ? "ALLOWED" : "DENIED") | |
1780 | << ", because it matched '" | |
1781 | << (AclMatchedName ? AclMatchedName : "NO ACL's") << "'" ); | |
62e76326 | 1782 | |
230a8cc6 | 1783 | if (!accessAllowed) { |
62e76326 | 1784 | ErrorState *err; |
0185bd6f | 1785 | err_type page_id; |
9ce7856a | 1786 | page_id = aclGetDenyInfoPage(&Config.denyInfoList, AclMatchedName, 1); |
0185bd6f | 1787 | |
c466369c | 1788 | http->logType = LOG_TCP_DENIED_REPLY; |
1789 | ||
0185bd6f | 1790 | if (page_id == ERR_NONE) |
1791 | page_id = ERR_ACCESS_DENIED; | |
1792 | ||
cc192b50 | 1793 | IPAddress tmp_noaddr; tmp_noaddr.SetNoAddr(); |
1794 | err = clientBuildError(page_id, HTTP_FORBIDDEN, NULL, | |
1795 | http->getConn() != NULL ? http->getConn()->peer : tmp_noaddr, | |
62e76326 | 1796 | http->request); |
0185bd6f | 1797 | |
86a2f789 | 1798 | removeClientStoreReference(&sc, http); |
0185bd6f | 1799 | |
7dc5f514 | 1800 | HTTPMSGUNLOCK(reply); |
0185bd6f | 1801 | |
3c2c1d31 | 1802 | startError(err); |
1803 | ||
0185bd6f | 1804 | |
62e76326 | 1805 | return; |
1806 | } | |
1807 | ||
0976f8db | 1808 | /* Ok, the reply is allowed, */ |
1809 | http->loggingEntry(http->storeEntry()); | |
1810 | ||
7dc5f514 | 1811 | ssize_t body_size = reqofs - reply->hdr_sz; |
b297bcd0 HN |
1812 | if (body_size < 0) { |
1813 | reqofs = reply->hdr_sz; | |
1814 | body_size = 0; | |
1815 | } | |
0976f8db | 1816 | |
bf8fe701 | 1817 | debugs(88, 3, "clientReplyContext::sendMoreData: Appending " << |
1818 | (int) body_size << " bytes after " << reply->hdr_sz << | |
1819 | " bytes of headers"); | |
0976f8db | 1820 | |
f41735ea | 1821 | #if USE_SQUID_ESI |
62e76326 | 1822 | |
7dc5f514 | 1823 | if (http->flags.accel && reply->sline.status != HTTP_FORBIDDEN && |
1824 | !alwaysAllowResponse(reply->sline.status) && | |
1825 | esiEnableProcessing(reply)) { | |
bf8fe701 | 1826 | debugs(88, 2, "Enabling ESI processing for " << http->uri); |
43ae1d95 | 1827 | clientStreamInsertHead(&http->client_stream, esiStreamRead, |
1828 | esiProcessStream, esiStreamDetach, esiStreamStatus, NULL); | |
1829 | } | |
1830 | ||
5ef38a13 | 1831 | #endif |
1832 | ||
62e76326 | 1833 | if (http->request->method == METHOD_HEAD) { |
1834 | /* do not forward body for HEAD replies */ | |
1835 | body_size = 0; | |
1836 | http->flags.done_copying = 1; | |
1837 | flags.complete = 1; | |
1838 | } | |
1839 | ||
1840 | assert (!flags.headersSent); | |
1841 | flags.headersSent = true; | |
1842 | ||
1843 | StoreIOBuffer tempBuffer; | |
1844 | char *buf = next()->readBuffer.data; | |
e85eb4e1 | 1845 | char *body_buf = buf + reply->hdr_sz; |
62e76326 | 1846 | |
49ea0125 | 1847 | //Server side may disable ranges under some circumstances. |
1848 | ||
1849 | if ((!http->request->range)) | |
1850 | next()->readBuffer.offset = 0; | |
1851 | ||
e85eb4e1 AJ |
1852 | body_buf -= next()->readBuffer.offset; |
1853 | ||
62e76326 | 1854 | if (next()->readBuffer.offset != 0) { |
1855 | if (next()->readBuffer.offset > body_size) { | |
2324cda2 | 1856 | /* Can't use any of the body we received. send nothing */ |
62e76326 | 1857 | tempBuffer.length = 0; |
1858 | tempBuffer.data = NULL; | |
1859 | } else { | |
1860 | tempBuffer.length = body_size - next()->readBuffer.offset; | |
1861 | tempBuffer.data = body_buf + next()->readBuffer.offset; | |
1862 | } | |
1863 | } else { | |
1864 | tempBuffer.length = body_size; | |
1865 | tempBuffer.data = body_buf; | |
1866 | } | |
1867 | ||
0655fa4d | 1868 | /* TODO??: move the data in the buffer back by the request header size */ |
62e76326 | 1869 | clientStreamCallback((clientStreamNode *)http->client_stream.head->data, |
7dc5f514 | 1870 | http, reply, tempBuffer); |
62e76326 | 1871 | |
1872 | return; | |
4993f571 | 1873 | } |
1874 | ||
528b2c61 | 1875 | void |
1876 | clientReplyContext::sendMoreData (StoreIOBuffer result) | |
1877 | { | |
50c09fc4 | 1878 | if (deleting) |
1879 | return; | |
1880 | ||
86a2f789 | 1881 | StoreEntry *entry = http->storeEntry(); |
50c09fc4 | 1882 | |
1cf238db | 1883 | ConnStateData * conn = http->getConn(); |
50c09fc4 | 1884 | |
94a396a3 | 1885 | int fd = conn != NULL ? conn->fd : -1; |
50c09fc4 | 1886 | |
528b2c61 | 1887 | char *buf = next()->readBuffer.data; |
50c09fc4 | 1888 | |
c8be6d7b | 1889 | char *body_buf = buf; |
edce4d98 | 1890 | |
da33c835 | 1891 | if (buf != result.data) { |
62e76326 | 1892 | /* we've got to copy some data */ |
1893 | assert(result.length <= next()->readBuffer.length); | |
1894 | xmemcpy(buf, result.data, result.length); | |
1895 | body_buf = buf; | |
edce4d98 | 1896 | } |
62e76326 | 1897 | |
7172612f AJ |
1898 | #if USE_ZPH_QOS |
1899 | if (reqofs==0 && !logTypeIsATcpHit(http->logType) && | |
1900 | Config.onoff.zph_preserve_miss_tos && | |
1901 | Config.zph_preserve_miss_tos_mask) | |
1902 | { | |
1903 | int tos = fd_table[fd].upstreamTOS & Config.zph_preserve_miss_tos_mask; | |
1904 | comm_set_tos(fd,tos); | |
1905 | } | |
1906 | #endif | |
1907 | ||
ab9c533b HN |
1908 | /* We've got the final data to start pushing... */ |
1909 | flags.storelogiccomplete = 1; | |
1910 | ||
4993f571 | 1911 | reqofs += result.length; |
1912 | ||
1913 | assert(reqofs <= HTTP_REQBUF_SZ || flags.headersSent); | |
62e76326 | 1914 | |
edce4d98 | 1915 | assert(http->request != NULL); |
62e76326 | 1916 | |
edce4d98 | 1917 | /* ESI TODO: remove this assert once everything is stable */ |
1918 | assert(http->client_stream.head->data | |
62e76326 | 1919 | && cbdataReferenceValid(http->client_stream.head->data)); |
528b2c61 | 1920 | |
1921 | makeThisHead(); | |
62e76326 | 1922 | |
bf8fe701 | 1923 | debugs(88, 5, "clientReplyContext::sendMoreData: " << http->uri << ", " << |
47f6e231 | 1924 | reqofs << " bytes (" << result.length << |
bf8fe701 | 1925 | " new bytes)"); |
47f6e231 | 1926 | debugs(88, 5, "clientReplyContext::sendMoreData:" |
1927 | " FD " << fd << | |
1928 | " '" << entry->url() << "'" << | |
1929 | " out.offset=" << http->out.offset); | |
528b2c61 | 1930 | |
edce4d98 | 1931 | /* update size of the request */ |
4993f571 | 1932 | reqsize = reqofs; |
62e76326 | 1933 | |
4993f571 | 1934 | if (errorInStream(result, reqofs)) { |
62e76326 | 1935 | sendStreamError(result); |
1936 | return; | |
edce4d98 | 1937 | } |
528b2c61 | 1938 | |
1939 | if (flags.headersSent) { | |
62e76326 | 1940 | pushStreamData (result, buf); |
1941 | return; | |
edce4d98 | 1942 | } |
62e76326 | 1943 | |
b297bcd0 | 1944 | cloneReply(); |
21b92762 | 1945 | |
b297bcd0 | 1946 | /* handle headers */ |
21b92762 | 1947 | |
b297bcd0 HN |
1948 | if (Config.onoff.log_mime_hdrs) { |
1949 | size_t k; | |
43ae1d95 | 1950 | |
b297bcd0 HN |
1951 | if ((k = headersEnd(buf, reqofs))) { |
1952 | safe_free(http->al.headers.reply); | |
1953 | http->al.headers.reply = (char *)xcalloc(k + 1, 1); | |
1954 | xstrncpy(http->al.headers.reply, buf, k); | |
1955 | } | |
edce4d98 | 1956 | } |
b297bcd0 HN |
1957 | |
1958 | holdingBuffer = result; | |
1959 | processReplyAccess(); | |
1960 | return; | |
edce4d98 | 1961 | } |
1962 | ||
62e76326 | 1963 | |
edce4d98 | 1964 | |
1965 | /* Using this breaks the client layering just a little! | |
1966 | */ | |
0655fa4d | 1967 | void |
60745f24 | 1968 | clientReplyContext::createStoreEntry(const HttpRequestMethod& m, request_flags flags) |
edce4d98 | 1969 | { |
0655fa4d | 1970 | assert(http != NULL); |
edce4d98 | 1971 | /* |
1972 | * For erroneous requests, we might not have a h->request, | |
1973 | * so make a fake one. | |
1974 | */ | |
62e76326 | 1975 | |
0655fa4d | 1976 | if (http->request == NULL) |
6dd9f4bd | 1977 | http->request = HTTPMSGLOCK(new HttpRequest(m, PROTO_NONE, null_string)); |
62e76326 | 1978 | |
0655fa4d | 1979 | StoreEntry *e = storeCreateEntry(http->uri, http->log_uri, flags, m); |
62e76326 | 1980 | |
0655fa4d | 1981 | sc = storeClientListAdd(e, this); |
62e76326 | 1982 | |
edce4d98 | 1983 | #if DELAY_POOLS |
62e76326 | 1984 | |
0655fa4d | 1985 | sc->setDelayId(DelayId::DelayClient(http)); |
62e76326 | 1986 | |
edce4d98 | 1987 | #endif |
62e76326 | 1988 | |
0655fa4d | 1989 | reqofs = 0; |
62e76326 | 1990 | |
0655fa4d | 1991 | reqsize = 0; |
62e76326 | 1992 | |
edce4d98 | 1993 | /* I don't think this is actually needed! -- adrian */ |
0655fa4d | 1994 | /* http->reqbuf = http->norm_reqbuf; */ |
1995 | // assert(http->reqbuf == http->norm_reqbuf); | |
edce4d98 | 1996 | /* The next line is illegal because we don't know if the client stream |
1997 | * buffers have been set up | |
1998 | */ | |
0655fa4d | 1999 | // storeClientCopy(http->sc, e, 0, HTTP_REQBUF_SZ, http->reqbuf, |
2000 | // SendMoreData, this); | |
edce4d98 | 2001 | /* So, we mark the store logic as complete */ |
0655fa4d | 2002 | this->flags.storelogiccomplete = 1; |
62e76326 | 2003 | |
edce4d98 | 2004 | /* and get the caller to request a read, from whereever they are */ |
62e76326 | 2005 | /* NOTE: after ANY data flows down the pipe, even one step, |
edce4d98 | 2006 | * this function CAN NOT be used to manage errors |
2007 | */ | |
86a2f789 | 2008 | http->storeEntry(e); |
edce4d98 | 2009 | } |
2010 | ||
2011 | ErrorState * | |
2012 | clientBuildError(err_type page_id, http_status status, char const *url, | |
cc192b50 | 2013 | IPAddress &src_addr, HttpRequest * request) |
edce4d98 | 2014 | { |
2cc81f1f | 2015 | ErrorState *err = errorCon(page_id, status, request); |
cc192b50 | 2016 | err->src_addr = src_addr; |
62e76326 | 2017 | |
edce4d98 | 2018 | if (url) |
62e76326 | 2019 | err->url = xstrdup(url); |
2020 | ||
edce4d98 | 2021 | return err; |
2022 | } |