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edce4d98 | 1 | /* |
262a0e14 | 2 | * $Id$ |
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. | |
26ac0430 | 23 | * |
edce4d98 | 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. | |
26ac0430 | 28 | * |
edce4d98 | 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" |
b7ac5457 AJ |
41 | #include "acl/FilledChecklist.h" |
42 | #include "acl/Gadgets.h" | |
2f1431ea | 43 | #if USE_AUTH |
b7ac5457 | 44 | #include "auth/UserRequest.h" |
2f1431ea | 45 | #endif |
b7ac5457 | 46 | #include "client_side.h" |
0655fa4d | 47 | #include "client_side_reply.h" |
c8be6d7b | 48 | #include "clientStream.h" |
9a0a18de | 49 | #if USE_DELAY_POOLS |
b7ac5457 AJ |
50 | #include "DelayPools.h" |
51 | #endif | |
52 | #include "errorpage.h" | |
f41735ea | 53 | #if USE_SQUID_ESI |
f99c2cfe | 54 | #include "esi/Esi.h" |
43ae1d95 | 55 | #endif |
7172612f | 56 | #include "fde.h" |
b7ac5457 | 57 | #include "forward.h" |
31971e6a | 58 | #include "format/Token.h" |
b7ac5457 AJ |
59 | #include "HttpReply.h" |
60 | #include "HttpRequest.h" | |
61 | #include "ip/QosConfig.h" | |
714e68b7 | 62 | #include "ipcache.h" |
b7ac5457 | 63 | #include "MemObject.h" |
90fa5816 | 64 | #include "ProtoPort.h" |
985c86bc | 65 | #include "SquidTime.h" |
b7ac5457 AJ |
66 | #include "StoreClient.h" |
67 | #include "Store.h" | |
e6ccf245 | 68 | |
0655fa4d | 69 | CBDATA_CLASS_INIT(clientReplyContext); |
edce4d98 | 70 | |
edce4d98 | 71 | /* Local functions */ |
e6ccf245 | 72 | extern "C" CSS clientReplyStatus; |
b7ac5457 | 73 | extern ErrorState *clientBuildError(err_type, http_status, char const *, Ip::Address &, HttpRequest *); |
edce4d98 | 74 | |
edce4d98 | 75 | /* privates */ |
edce4d98 | 76 | |
0655fa4d | 77 | clientReplyContext::~clientReplyContext() |
edce4d98 | 78 | { |
50c09fc4 | 79 | deleting = true; |
80 | /* This may trigger a callback back into SendMoreData as the cbdata | |
81 | * is still valid | |
82 | */ | |
86a2f789 | 83 | removeClientStoreReference(&sc, http); |
edce4d98 | 84 | /* old_entry might still be set if we didn't yet get the reply |
0655fa4d | 85 | * code in HandleIMSReply() */ |
86 | removeStoreReference(&old_sc, &old_entry); | |
87 | safe_free(tempBuffer.data); | |
88 | cbdataReferenceDone(http); | |
2b7d324b | 89 | HTTPMSGUNLOCK(reply); |
edce4d98 | 90 | } |
91 | ||
59a1efb2 | 92 | clientReplyContext::clientReplyContext(ClientHttpRequest *clientContext) : http (cbdataReference(clientContext)), old_entry (NULL), old_sc(NULL), deleting(false) |
0655fa4d | 93 | {} |
edce4d98 | 94 | |
a5c8d64d AJ |
95 | /** Create an error in the store awaiting the client side to read it. |
96 | * | |
97 | * This may be better placed in the clientStream logic, but it has not been | |
0655fa4d | 98 | * relocated there yet |
99 | */ | |
edce4d98 | 100 | void |
0655fa4d | 101 | clientReplyContext::setReplyToError( |
60745f24 | 102 | err_type err, http_status status, const HttpRequestMethod& method, char const *uri, |
b7ac5457 | 103 | Ip::Address &addr, HttpRequest * failedrequest, const char *unparsedrequest, |
2f1431ea AJ |
104 | #if USE_AUTH |
105 | AuthUserRequest::Pointer auth_user_request | |
106 | #else | |
9d2b8284 | 107 | void* |
2f1431ea | 108 | #endif |
74174c03 | 109 | ) |
edce4d98 | 110 | { |
a33a428a | 111 | ErrorState *errstate = clientBuildError(err, status, uri, addr, failedrequest); |
62e76326 | 112 | |
edce4d98 | 113 | if (unparsedrequest) |
62e76326 | 114 | errstate->request_hdrs = xstrdup(unparsedrequest); |
edce4d98 | 115 | |
0655fa4d | 116 | if (status == HTTP_NOT_IMPLEMENTED && http->request) |
62e76326 | 117 | /* prevent confusion over whether we default to persistent or not */ |
0655fa4d | 118 | http->request->flags.proxy_keepalive = 0; |
62e76326 | 119 | |
0655fa4d | 120 | http->al.http.code = errstate->httpStatus; |
edce4d98 | 121 | |
0655fa4d | 122 | createStoreEntry(method, request_flags()); |
2f1431ea | 123 | #if USE_AUTH |
a33a428a | 124 | errstate->auth_user_request = auth_user_request; |
2f1431ea | 125 | #endif |
edce4d98 | 126 | assert(errstate->callback_data == NULL); |
86a2f789 | 127 | errorAppendEntry(http->storeEntry(), errstate); |
edce4d98 | 128 | /* Now the caller reads to get this */ |
129 | } | |
130 | ||
131 | void | |
0655fa4d | 132 | clientReplyContext::removeStoreReference(store_client ** scp, |
133 | StoreEntry ** ep) | |
edce4d98 | 134 | { |
135 | StoreEntry *e; | |
e4ae841b | 136 | store_client *sc_tmp = *scp; |
62e76326 | 137 | |
edce4d98 | 138 | if ((e = *ep) != NULL) { |
62e76326 | 139 | *ep = NULL; |
e4ae841b | 140 | storeUnregister(sc_tmp, e, this); |
62e76326 | 141 | *scp = NULL; |
97b5e68f | 142 | e->unlock(); |
edce4d98 | 143 | } |
144 | } | |
145 | ||
86a2f789 | 146 | void |
8bcf08e0 | 147 | clientReplyContext::removeClientStoreReference(store_client **scp, ClientHttpRequest *aHttpRequest) |
86a2f789 | 148 | { |
8bcf08e0 | 149 | StoreEntry *reference = aHttpRequest->storeEntry(); |
86a2f789 | 150 | removeStoreReference(scp, &reference); |
8bcf08e0 | 151 | aHttpRequest->storeEntry(reference); |
86a2f789 | 152 | } |
153 | ||
e6ccf245 | 154 | void * |
a695955b | 155 | clientReplyContext::operator new (size_t byteCount) |
e6ccf245 | 156 | { |
157 | /* derived classes with different sizes must implement their own new */ | |
158 | assert (byteCount == sizeof (clientReplyContext)); | |
0655fa4d | 159 | CBDATA_INIT_TYPE(clientReplyContext); |
e6ccf245 | 160 | return cbdataAlloc(clientReplyContext); |
161 | } | |
162 | ||
163 | void | |
164 | clientReplyContext::operator delete (void *address) | |
165 | { | |
a50bfe93 | 166 | clientReplyContext * tmp = (clientReplyContext *)address; |
167 | cbdataFree (tmp); | |
e6ccf245 | 168 | } |
169 | ||
edce4d98 | 170 | void |
0655fa4d | 171 | clientReplyContext::saveState() |
edce4d98 | 172 | { |
e6ccf245 | 173 | assert(old_sc == NULL); |
bf8fe701 | 174 | debugs(88, 3, "clientReplyContext::saveState: saving store context"); |
86a2f789 | 175 | old_entry = http->storeEntry(); |
e6ccf245 | 176 | old_sc = sc; |
177 | old_reqsize = reqsize; | |
178 | tempBuffer.offset = reqofs; | |
edce4d98 | 179 | /* Prevent accessing the now saved entries */ |
86a2f789 | 180 | http->storeEntry(NULL); |
e6ccf245 | 181 | sc = NULL; |
182 | reqsize = 0; | |
183 | reqofs = 0; | |
edce4d98 | 184 | } |
185 | ||
186 | void | |
0655fa4d | 187 | clientReplyContext::restoreState() |
edce4d98 | 188 | { |
e6ccf245 | 189 | assert(old_sc != NULL); |
bf8fe701 | 190 | debugs(88, 3, "clientReplyContext::restoreState: Restoring store context"); |
86a2f789 | 191 | removeClientStoreReference(&sc, http); |
192 | http->storeEntry(old_entry); | |
e6ccf245 | 193 | sc = old_sc; |
194 | reqsize = old_reqsize; | |
195 | reqofs = tempBuffer.offset; | |
edce4d98 | 196 | /* Prevent accessed the old saved entries */ |
0655fa4d | 197 | old_entry = NULL; |
e6ccf245 | 198 | old_sc = NULL; |
199 | old_reqsize = 0; | |
200 | tempBuffer.offset = 0; | |
c8be6d7b | 201 | } |
202 | ||
203 | void | |
0655fa4d | 204 | clientReplyContext::startError(ErrorState * err) |
c8be6d7b | 205 | { |
0655fa4d | 206 | createStoreEntry(http->request->method, request_flags()); |
207 | triggerInitialStoreRead(); | |
86a2f789 | 208 | errorAppendEntry(http->storeEntry(), err); |
edce4d98 | 209 | } |
210 | ||
e6ccf245 | 211 | clientStreamNode * |
528b2c61 | 212 | clientReplyContext::getNextNode() const |
e6ccf245 | 213 | { |
62e76326 | 214 | return (clientStreamNode *)ourNode->node.next->data; |
e6ccf245 | 215 | } |
216 | ||
62e76326 | 217 | /* This function is wrong - the client parameters don't include the |
528b2c61 | 218 | * header offset |
219 | */ | |
c8be6d7b | 220 | void |
0655fa4d | 221 | clientReplyContext::triggerInitialStoreRead() |
c8be6d7b | 222 | { |
0655fa4d | 223 | /* when confident, 0 becomes reqofs, and then this factors into |
26ac0430 | 224 | * startSendProcess |
528b2c61 | 225 | */ |
0655fa4d | 226 | assert(reqofs == 0); |
8bcf08e0 FC |
227 | StoreIOBuffer localTempBuffer (next()->readBuffer.length, 0, next()->readBuffer.data); |
228 | storeClientCopy(sc, http->storeEntry(), localTempBuffer, SendMoreData, this); | |
c8be6d7b | 229 | } |
edce4d98 | 230 | |
231 | /* there is an expired entry in the store. | |
232 | * setup a temporary buffer area and perform an IMS to the origin | |
233 | */ | |
0655fa4d | 234 | void |
235 | clientReplyContext::processExpired() | |
edce4d98 | 236 | { |
edce4d98 | 237 | char *url = http->uri; |
238 | StoreEntry *entry = NULL; | |
bf8fe701 | 239 | debugs(88, 3, "clientReplyContext::processExpired: '" << http->uri << "'"); |
86a2f789 | 240 | assert(http->storeEntry()->lastmod >= 0); |
edce4d98 | 241 | /* |
242 | * check if we are allowed to contact other servers | |
26ac0430 | 243 | * @?@: Instead of a 504 (Gateway Timeout) reply, we may want to return |
edce4d98 | 244 | * a stale entry *if* it matches client requirements |
245 | */ | |
62e76326 | 246 | |
0655fa4d | 247 | if (http->onlyIfCached()) { |
248 | processOnlyIfCachedMiss(); | |
62e76326 | 249 | return; |
edce4d98 | 250 | } |
62e76326 | 251 | |
edce4d98 | 252 | http->request->flags.refresh = 1; |
253 | #if STORE_CLIENT_LIST_DEBUG | |
c8be6d7b | 254 | /* Prevent a race with the store client memory free routines |
edce4d98 | 255 | */ |
0655fa4d | 256 | assert(storeClientIsThisAClient(sc, this)); |
edce4d98 | 257 | #endif |
258 | /* Prepare to make a new temporary request */ | |
0655fa4d | 259 | saveState(); |
edce4d98 | 260 | entry = storeCreateEntry(url, |
62e76326 | 261 | http->log_uri, http->request->flags, http->request->method); |
34266cde | 262 | /* NOTE, don't call StoreEntry->lock(), storeCreateEntry() does it */ |
0655fa4d | 263 | sc = storeClientListAdd(entry, this); |
9a0a18de | 264 | #if USE_DELAY_POOLS |
edce4d98 | 265 | /* delay_id is already set on original store client */ |
0655fa4d | 266 | sc->setDelayId(DelayId::DelayClient(http)); |
edce4d98 | 267 | #endif |
62e76326 | 268 | |
0655fa4d | 269 | http->request->lastmod = old_entry->lastmod; |
4a7a3d56 | 270 | debugs(88, 5, "clientReplyContext::processExpired : lastmod " << entry->lastmod ); |
86a2f789 | 271 | http->storeEntry(entry); |
c8be6d7b | 272 | assert(http->out.offset == 0); |
9174ba3d | 273 | assert(http->request->clientConnectionManager == http->getConn()); |
655daa06 | 274 | |
b2d22df6 | 275 | /* |
276 | * A refcounted pointer so that FwdState stays around as long as | |
277 | * this clientReplyContext does | |
278 | */ | |
73c36fd9 | 279 | Comm::ConnectionPointer conn = http->getConn() != NULL ? http->getConn()->clientConnection : NULL; |
5c336a3b | 280 | FwdState::fwdStart(conn, http->storeEntry(), http->request); |
62e76326 | 281 | |
edce4d98 | 282 | /* Register with storage manager to receive updates when data comes in. */ |
62e76326 | 283 | |
edce4d98 | 284 | if (EBIT_TEST(entry->flags, ENTRY_ABORTED)) |
bf8fe701 | 285 | debugs(88, 0, "clientReplyContext::processExpired: Found ENTRY_ABORTED object"); |
62e76326 | 286 | |
c8be6d7b | 287 | { |
62e76326 | 288 | /* start counting the length from 0 */ |
8bcf08e0 FC |
289 | StoreIOBuffer localTempBuffer(HTTP_REQBUF_SZ, 0, tempbuf); |
290 | storeClientCopy(sc, entry, localTempBuffer, HandleIMSReply, this); | |
edce4d98 | 291 | } |
292 | } | |
293 | ||
edce4d98 | 294 | |
528b2c61 | 295 | void |
296 | clientReplyContext::sendClientUpstreamResponse() | |
297 | { | |
298 | StoreIOBuffer tempresult; | |
0655fa4d | 299 | removeStoreReference(&old_sc, &old_entry); |
2324cda2 | 300 | /* here the data to send is the data we just received */ |
528b2c61 | 301 | tempBuffer.offset = 0; |
302 | old_reqsize = 0; | |
0655fa4d | 303 | /* sendMoreData tracks the offset as well. |
528b2c61 | 304 | * Force it back to zero */ |
305 | reqofs = 0; | |
86a2f789 | 306 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 307 | /* TODO: provide sendMoreData with the ready parsed reply */ |
528b2c61 | 308 | tempresult.length = reqsize; |
309 | tempresult.data = tempbuf; | |
0655fa4d | 310 | sendMoreData(tempresult); |
528b2c61 | 311 | } |
312 | ||
edce4d98 | 313 | void |
0655fa4d | 314 | clientReplyContext::HandleIMSReply(void *data, StoreIOBuffer result) |
edce4d98 | 315 | { |
e6ccf245 | 316 | clientReplyContext *context = (clientReplyContext *)data; |
0655fa4d | 317 | context->handleIMSReply(result); |
318 | } | |
62e76326 | 319 | |
0655fa4d | 320 | void |
321 | clientReplyContext::sendClientOldEntry() | |
322 | { | |
323 | /* Get the old request back */ | |
324 | restoreState(); | |
325 | /* here the data to send is in the next nodes buffers already */ | |
86a2f789 | 326 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 327 | /* sendMoreData tracks the offset as well. |
328 | * Force it back to zero */ | |
329 | reqofs = 0; | |
330 | StoreIOBuffer tempresult (reqsize, reqofs, next()->readBuffer.data); | |
331 | sendMoreData(tempresult); | |
332 | } | |
62e76326 | 333 | |
1d7ab0f4 | 334 | /* This is the workhorse of the HandleIMSReply callback. |
335 | * | |
336 | * It is called when we've got data back from the origin following our | |
337 | * IMS request to revalidate a stale entry. | |
338 | */ | |
0655fa4d | 339 | void |
1d7ab0f4 | 340 | clientReplyContext::handleIMSReply(StoreIOBuffer result) |
0655fa4d | 341 | { |
1d7ab0f4 | 342 | if (deleting) |
343 | return; | |
62e76326 | 344 | |
bf8fe701 | 345 | debugs(88, 3, "handleIMSReply: " << http->storeEntry()->url() << ", " << (long unsigned) result.length << " bytes" ); |
62e76326 | 346 | |
1d7ab0f4 | 347 | if (http->storeEntry() == NULL) |
348 | return; | |
07947ad8 | 349 | |
1d7ab0f4 | 350 | if (result.flags.error && !EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) |
351 | return; | |
62e76326 | 352 | |
1d7ab0f4 | 353 | /* update size of the request */ |
354 | reqsize = result.length + reqofs; | |
62e76326 | 355 | |
1d7ab0f4 | 356 | const http_status status = http->storeEntry()->getReply()->sline.status; |
62e76326 | 357 | |
1d7ab0f4 | 358 | // request to origin was aborted |
359 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) { | |
bf8fe701 | 360 | debugs(88, 3, "handleIMSReply: request to origin aborted '" << http->storeEntry()->url() << "', sending old entry to client" ); |
7948b784 | 361 | http->logType = LOG_TCP_REFRESH_FAIL_OLD; |
1d7ab0f4 | 362 | sendClientOldEntry(); |
0655fa4d | 363 | } |
62e76326 | 364 | |
b297bcd0 | 365 | HttpReply *old_rep = (HttpReply *) old_entry->getReply(); |
62e76326 | 366 | |
b297bcd0 | 367 | // origin replied 304 |
b297bcd0 | 368 | if (status == HTTP_NOT_MODIFIED) { |
26ac0430 | 369 | http->logType = LOG_TCP_REFRESH_UNMODIFIED; |
045a76ab | 370 | |
26ac0430 | 371 | // update headers on existing entry |
4802f60d | 372 | old_rep->updateOnNotModified(http->storeEntry()->getReply()); |
26ac0430 | 373 | old_entry->timestampsSet(); |
62e76326 | 374 | |
26ac0430 | 375 | // if client sent IMS |
62e76326 | 376 | |
ee15ba9b | 377 | if (http->request->flags.ims && !old_entry->modifiedSince(http->request)) { |
26ac0430 AJ |
378 | // forward the 304 from origin |
379 | debugs(88, 3, "handleIMSReply: origin replied 304, revalidating existing entry and forwarding 304 to client"); | |
380 | sendClientUpstreamResponse(); | |
381 | } else { | |
382 | // send existing entry, it's still valid | |
383 | debugs(88, 3, "handleIMSReply: origin replied 304, revalidating existing entry and sending " << | |
4802f60d | 384 | old_rep->sline.status << " to client"); |
26ac0430 AJ |
385 | sendClientOldEntry(); |
386 | } | |
b297bcd0 | 387 | } |
62e76326 | 388 | |
b297bcd0 HN |
389 | // origin replied with a non-error code |
390 | else if (status > HTTP_STATUS_NONE && status < HTTP_INTERNAL_SERVER_ERROR) { | |
26ac0430 AJ |
391 | // forward response from origin |
392 | http->logType = LOG_TCP_REFRESH_MODIFIED; | |
393 | debugs(88, 3, "handleIMSReply: origin replied " << status << ", replacing existing entry and forwarding to client"); | |
394 | sendClientUpstreamResponse(); | |
b297bcd0 | 395 | } |
62e76326 | 396 | |
b297bcd0 | 397 | // origin replied with an error |
7948b784 AR |
398 | else if (http->request->flags.fail_on_validation_err) { |
399 | http->logType = LOG_TCP_REFRESH_FAIL_ERR; | |
400 | debugs(88, 3, "handleIMSReply: origin replied with error " << status << | |
401 | ", forwarding to client due to fail_on_validation_err"); | |
402 | sendClientUpstreamResponse(); | |
403 | } else { | |
26ac0430 | 404 | // ignore and let client have old entry |
7948b784 | 405 | http->logType = LOG_TCP_REFRESH_FAIL_OLD; |
26ac0430 AJ |
406 | debugs(88, 3, "handleIMSReply: origin replied with error " << |
407 | status << ", sending old entry (" << old_rep->sline.status << ") to client"); | |
408 | sendClientOldEntry(); | |
1d7ab0f4 | 409 | } |
edce4d98 | 410 | } |
411 | ||
e6ccf245 | 412 | extern "C" CSR clientGetMoreData; |
413 | extern "C" CSD clientReplyDetach; | |
edce4d98 | 414 | |
7d5f62a4 AJ |
415 | /** |
416 | * clientReplyContext::cacheHit Should only be called until the HTTP reply headers | |
edce4d98 | 417 | * have been parsed. Normally this should be a single call, but |
418 | * it might take more than one. As soon as we have the headers, | |
0655fa4d | 419 | * we hand off to clientSendMoreData, processExpired, or |
420 | * processMiss. | |
edce4d98 | 421 | */ |
422 | void | |
0655fa4d | 423 | clientReplyContext::CacheHit(void *data, StoreIOBuffer result) |
edce4d98 | 424 | { |
e6ccf245 | 425 | clientReplyContext *context = (clientReplyContext *)data; |
7d5f62a4 | 426 | context->cacheHit(result); |
0655fa4d | 427 | } |
428 | ||
7d5f62a4 AJ |
429 | /** |
430 | * Process a possible cache HIT. | |
431 | */ | |
0655fa4d | 432 | void |
433 | clientReplyContext::cacheHit(StoreIOBuffer result) | |
434 | { | |
7d5f62a4 | 435 | /** Ignore if the HIT object is being deleted. */ |
045a76ab | 436 | if (deleting) |
437 | return; | |
438 | ||
86a2f789 | 439 | StoreEntry *e = http->storeEntry(); |
045a76ab | 440 | |
190154cf | 441 | HttpRequest *r = http->request; |
045a76ab | 442 | |
4a7a3d56 | 443 | debugs(88, 3, "clientCacheHit: " << http->uri << ", " << result.length << " bytes"); |
62e76326 | 444 | |
86a2f789 | 445 | if (http->storeEntry() == NULL) { |
bf8fe701 | 446 | debugs(88, 3, "clientCacheHit: request aborted"); |
62e76326 | 447 | return; |
c8be6d7b | 448 | } else if (result.flags.error) { |
62e76326 | 449 | /* swap in failure */ |
bf8fe701 | 450 | debugs(88, 3, "clientCacheHit: swapin failure for " << http->uri); |
62e76326 | 451 | http->logType = LOG_TCP_SWAPFAIL_MISS; |
86a2f789 | 452 | removeClientStoreReference(&sc, http); |
0655fa4d | 453 | processMiss(); |
62e76326 | 454 | return; |
edce4d98 | 455 | } |
62e76326 | 456 | |
d3b3ab85 | 457 | if (result.length == 0) { |
62e76326 | 458 | /* the store couldn't get enough data from the file for us to id the |
459 | * object | |
460 | */ | |
461 | /* treat as a miss */ | |
462 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 463 | processMiss(); |
62e76326 | 464 | return; |
d3b3ab85 | 465 | } |
62e76326 | 466 | |
edce4d98 | 467 | assert(!EBIT_TEST(e->flags, ENTRY_ABORTED)); |
468 | /* update size of the request */ | |
0655fa4d | 469 | reqsize = result.length + reqofs; |
62e76326 | 470 | |
edce4d98 | 471 | /* |
472 | * Got the headers, now grok them | |
473 | */ | |
29b8d8d6 | 474 | assert(http->logType == LOG_TCP_HIT); |
62e76326 | 475 | |
cdd4e1c1 | 476 | if (strcmp(e->mem_obj->url, urlCanonical(r)) != 0) { |
26ac0430 | 477 | debugs(33, 1, "clientProcessHit: URL mismatch, '" << e->mem_obj->url << "' != '" << urlCanonical(r) << "'"); |
cdd4e1c1 | 478 | processMiss(); |
479 | return; | |
480 | } | |
481 | ||
edce4d98 | 482 | switch (varyEvaluateMatch(e, r)) { |
62e76326 | 483 | |
edce4d98 | 484 | case VARY_NONE: |
62e76326 | 485 | /* No variance detected. Continue as normal */ |
486 | break; | |
487 | ||
edce4d98 | 488 | case VARY_MATCH: |
62e76326 | 489 | /* This is the correct entity for this request. Continue */ |
bf8fe701 | 490 | debugs(88, 2, "clientProcessHit: Vary MATCH!"); |
62e76326 | 491 | break; |
492 | ||
edce4d98 | 493 | case VARY_OTHER: |
62e76326 | 494 | /* This is not the correct entity for this request. We need |
495 | * to requery the cache. | |
496 | */ | |
86a2f789 | 497 | removeClientStoreReference(&sc, http); |
62e76326 | 498 | e = NULL; |
499 | /* Note: varyEvalyateMatch updates the request with vary information | |
500 | * so we only get here once. (it also takes care of cancelling loops) | |
501 | */ | |
26ac0430 | 502 | debugs(88, 2, "clientProcessHit: Vary detected!"); |
0655fa4d | 503 | clientGetMoreData(ourNode, http); |
62e76326 | 504 | return; |
505 | ||
edce4d98 | 506 | case VARY_CANCEL: |
62e76326 | 507 | /* varyEvaluateMatch found a object loop. Process as miss */ |
bf8fe701 | 508 | debugs(88, 1, "clientProcessHit: Vary object loop!"); |
0655fa4d | 509 | processMiss(); |
62e76326 | 510 | return; |
edce4d98 | 511 | } |
62e76326 | 512 | |
edce4d98 | 513 | if (r->method == METHOD_PURGE) { |
86a2f789 | 514 | removeClientStoreReference(&sc, http); |
62e76326 | 515 | e = NULL; |
0655fa4d | 516 | purgeRequest(); |
62e76326 | 517 | return; |
edce4d98 | 518 | } |
62e76326 | 519 | |
3900307b | 520 | if (e->checkNegativeHit() |
626096be | 521 | #if USE_HTTP_VIOLATIONS |
36e6655b | 522 | && !r->flags.nocache_hack |
523 | #endif | |
524 | ) { | |
62e76326 | 525 | http->logType = LOG_TCP_NEGATIVE_HIT; |
0655fa4d | 526 | sendMoreData(result); |
bcfba8bd | 527 | } else if (!http->flags.internal && refreshCheckHTTP(e, r)) { |
bf8fe701 | 528 | debugs(88, 5, "clientCacheHit: in refreshCheck() block"); |
62e76326 | 529 | /* |
530 | * We hold a stale copy; it needs to be validated | |
531 | */ | |
532 | /* | |
533 | * The 'need_validation' flag is used to prevent forwarding | |
534 | * loops between siblings. If our copy of the object is stale, | |
535 | * then we should probably only use parents for the validation | |
536 | * request. Otherwise two siblings could generate a loop if | |
537 | * both have a stale version of the object. | |
538 | */ | |
539 | r->flags.need_validation = 1; | |
540 | ||
541 | if (e->lastmod < 0) { | |
542 | /* | |
543 | * Previous reply didn't have a Last-Modified header, | |
544 | * we cannot revalidate it. | |
545 | */ | |
546 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 547 | processMiss(); |
62e76326 | 548 | } else if (r->flags.nocache) { |
549 | /* | |
550 | * This did not match a refresh pattern that overrides no-cache | |
551 | * we should honour the client no-cache header. | |
552 | */ | |
553 | http->logType = LOG_TCP_CLIENT_REFRESH_MISS; | |
0655fa4d | 554 | processMiss(); |
0c3d3f65 | 555 | } else if (r->protocol == AnyP::PROTO_HTTP) { |
62e76326 | 556 | /* |
557 | * Object needs to be revalidated | |
558 | * XXX This could apply to FTP as well, if Last-Modified is known. | |
559 | */ | |
0655fa4d | 560 | processExpired(); |
62e76326 | 561 | } else { |
562 | /* | |
563 | * We don't know how to re-validate other protocols. Handle | |
564 | * them as if the object has expired. | |
565 | */ | |
566 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 567 | processMiss(); |
62e76326 | 568 | } |
79c8035e AR |
569 | } else if (r->conditional()) |
570 | processConditional(result); | |
571 | else { | |
62e76326 | 572 | /* |
573 | * plain ol' cache hit | |
574 | */ | |
575 | ||
9a0a18de | 576 | #if USE_DELAY_POOLS |
ffdf45f2 | 577 | if (e->store_status != STORE_OK) |
849b826a | 578 | http->logType = LOG_TCP_MISS; |
5bf4d170 | 579 | else |
580 | #endif | |
26ac0430 AJ |
581 | if (e->mem_status == IN_MEMORY) |
582 | http->logType = LOG_TCP_MEM_HIT; | |
583 | else if (Config.onoff.offline) | |
584 | http->logType = LOG_TCP_OFFLINE_HIT; | |
62e76326 | 585 | |
0655fa4d | 586 | sendMoreData(result); |
edce4d98 | 587 | } |
588 | } | |
589 | ||
7d5f62a4 | 590 | /** |
edce4d98 | 591 | * Prepare to fetch the object as it's a cache miss of some kind. |
592 | */ | |
593 | void | |
0655fa4d | 594 | clientReplyContext::processMiss() |
edce4d98 | 595 | { |
edce4d98 | 596 | char *url = http->uri; |
190154cf | 597 | HttpRequest *r = http->request; |
edce4d98 | 598 | ErrorState *err = NULL; |
60745f24 | 599 | debugs(88, 4, "clientProcessMiss: '" << RequestMethodStr(r->method) << " " << url << "'"); |
7d5f62a4 AJ |
600 | |
601 | /** | |
edce4d98 | 602 | * We might have a left-over StoreEntry from a failed cache hit |
603 | * or IMS request. | |
604 | */ | |
86a2f789 | 605 | if (http->storeEntry()) { |
606 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_SPECIAL)) { | |
bf8fe701 | 607 | debugs(88, 0, "clientProcessMiss: miss on a special object (" << url << ")."); |
38e16f92 | 608 | debugs(88, 0, "\tlog_type = " << Format::log_tags[http->logType]); |
3900307b | 609 | http->storeEntry()->dump(1); |
62e76326 | 610 | } |
611 | ||
86a2f789 | 612 | removeClientStoreReference(&sc, http); |
edce4d98 | 613 | } |
62e76326 | 614 | |
7d5f62a4 | 615 | /** Check if its a PURGE request to be actioned. */ |
edce4d98 | 616 | if (r->method == METHOD_PURGE) { |
0655fa4d | 617 | purgeRequest(); |
62e76326 | 618 | return; |
edce4d98 | 619 | } |
914b89a2 | 620 | |
7d5f62a4 | 621 | /** Check if its an 'OTHER' request. Purge all cached entries if so and continue. */ |
914b89a2 | 622 | if (r->method == METHOD_OTHER) { |
26ac0430 | 623 | purgeAllCached(); |
60745f24 | 624 | } |
62e76326 | 625 | |
7d5f62a4 | 626 | /** Check if 'only-if-cached' flag is set. Action if so. */ |
0655fa4d | 627 | if (http->onlyIfCached()) { |
628 | processOnlyIfCachedMiss(); | |
62e76326 | 629 | return; |
edce4d98 | 630 | } |
62e76326 | 631 | |
ce5a16c2 AR |
632 | /// Deny loops for accelerator and interceptor. TODO: deny in all modes? |
633 | if (r->flags.loopdetect && | |
e1381638 | 634 | (http->flags.accel || http->flags.intercepted)) { |
62e76326 | 635 | http->al.http.code = HTTP_FORBIDDEN; |
73c36fd9 | 636 | err = clientBuildError(ERR_ACCESS_DENIED, HTTP_FORBIDDEN, NULL, http->getConn()->clientConnection->remote, http->request); |
0655fa4d | 637 | createStoreEntry(r->method, request_flags()); |
86a2f789 | 638 | errorAppendEntry(http->storeEntry(), err); |
0655fa4d | 639 | triggerInitialStoreRead(); |
62e76326 | 640 | return; |
edce4d98 | 641 | } else { |
26ac0430 | 642 | assert(http->out.offset == 0); |
0655fa4d | 643 | createStoreEntry(r->method, r->flags); |
644 | triggerInitialStoreRead(); | |
62e76326 | 645 | |
646 | if (http->redirect.status) { | |
06a5ae20 | 647 | HttpReply *rep = new HttpReply; |
edce4d98 | 648 | #if LOG_TCP_REDIRECTS |
62e76326 | 649 | |
650 | http->logType = LOG_TCP_REDIRECT; | |
edce4d98 | 651 | #endif |
62e76326 | 652 | |
d88e3c49 | 653 | http->storeEntry()->releaseRequest(); |
06a5ae20 | 654 | rep->redirect(http->redirect.status, http->redirect.location); |
db237875 | 655 | http->storeEntry()->replaceHttpReply(rep); |
86a2f789 | 656 | http->storeEntry()->complete(); |
62e76326 | 657 | return; |
658 | } | |
659 | ||
7d5f62a4 | 660 | /** Check for internal requests. Update Protocol info if so. */ |
62e76326 | 661 | if (http->flags.internal) |
0c3d3f65 | 662 | r->protocol = AnyP::PROTO_INTERNAL; |
62e76326 | 663 | |
9174ba3d | 664 | assert(r->clientConnectionManager == http->getConn()); |
655daa06 | 665 | |
7d5f62a4 | 666 | /** Start forwarding to get the new object from network */ |
73c36fd9 | 667 | Comm::ConnectionPointer conn = http->getConn() != NULL ? http->getConn()->clientConnection : NULL; |
5c336a3b | 668 | FwdState::fwdStart(conn, http->storeEntry(), r); |
edce4d98 | 669 | } |
670 | } | |
671 | ||
7d5f62a4 | 672 | /** |
edce4d98 | 673 | * client issued a request with an only-if-cached cache-control directive; |
674 | * we did not find a cached object that can be returned without | |
675 | * contacting other servers; | |
676 | * respond with a 504 (Gateway Timeout) as suggested in [RFC 2068] | |
677 | */ | |
0655fa4d | 678 | void |
679 | clientReplyContext::processOnlyIfCachedMiss() | |
edce4d98 | 680 | { |
bf8fe701 | 681 | debugs(88, 4, "clientProcessOnlyIfCachedMiss: '" << |
60745f24 | 682 | RequestMethodStr(http->request->method) << " " << http->uri << "'"); |
edce4d98 | 683 | http->al.http.code = HTTP_GATEWAY_TIMEOUT; |
be364179 | 684 | ErrorState *err = clientBuildError(ERR_ONLY_IF_CACHED_MISS, HTTP_GATEWAY_TIMEOUT, NULL, |
73c36fd9 | 685 | http->getConn()->clientConnection->remote, http->request); |
86a2f789 | 686 | removeClientStoreReference(&sc, http); |
0655fa4d | 687 | startError(err); |
edce4d98 | 688 | } |
689 | ||
79c8035e AR |
690 | /// process conditional request from client |
691 | void | |
692 | clientReplyContext::processConditional(StoreIOBuffer &result) | |
693 | { | |
a2bd457d | 694 | StoreEntry *const e = http->storeEntry(); |
79c8035e AR |
695 | |
696 | if (e->getReply()->sline.status != HTTP_OK) { | |
697 | debugs(88, 4, "clientReplyContext::processConditional: Reply code " << | |
698 | e->getReply()->sline.status << " != 200"); | |
699 | http->logType = LOG_TCP_MISS; | |
700 | processMiss(); | |
701 | return; | |
702 | } | |
703 | ||
704 | HttpRequest &r = *http->request; | |
705 | ||
706 | if (r.header.has(HDR_IF_MATCH) && !e->hasIfMatchEtag(r)) { | |
707 | // RFC 2616: reply with 412 Precondition Failed if If-Match did not match | |
708 | sendPreconditionFailedError(); | |
709 | return; | |
710 | } | |
711 | ||
712 | bool matchedIfNoneMatch = false; | |
713 | if (r.header.has(HDR_IF_NONE_MATCH)) { | |
714 | if (!e->hasIfNoneMatchEtag(r)) { | |
715 | // RFC 2616: ignore IMS if If-None-Match did not match | |
716 | r.flags.ims = 0; | |
717 | r.ims = -1; | |
718 | r.imslen = 0; | |
719 | r.header.delById(HDR_IF_MODIFIED_SINCE); | |
720 | http->logType = LOG_TCP_MISS; | |
721 | sendMoreData(result); | |
722 | return; | |
723 | } | |
724 | ||
725 | if (!r.flags.ims) { | |
726 | // RFC 2616: if If-None-Match matched and there is no IMS, | |
a2bd457d AJ |
727 | // reply with 304 Not Modified or 412 Precondition Failed |
728 | sendNotModifiedOrPreconditionFailedError(); | |
79c8035e AR |
729 | return; |
730 | } | |
731 | ||
a2bd457d | 732 | // otherwise check IMS below to decide if we reply with 304 or 412 |
79c8035e AR |
733 | matchedIfNoneMatch = true; |
734 | } | |
735 | ||
736 | if (r.flags.ims) { | |
737 | // handle If-Modified-Since requests from the client | |
738 | if (e->modifiedSince(&r)) { | |
739 | http->logType = LOG_TCP_IMS_HIT; | |
740 | sendMoreData(result); | |
741 | return; | |
742 | } | |
743 | ||
744 | if (matchedIfNoneMatch) { | |
a2bd457d AJ |
745 | // If-None-Match matched, reply with 304 Not Modified or |
746 | // 412 Precondition Failed | |
747 | sendNotModifiedOrPreconditionFailedError(); | |
79c8035e AR |
748 | return; |
749 | } | |
750 | ||
751 | // otherwise reply with 304 Not Modified | |
a2bd457d | 752 | sendNotModified(); |
79c8035e AR |
753 | } |
754 | } | |
755 | ||
edce4d98 | 756 | void |
e6ccf245 | 757 | clientReplyContext::purgeRequestFindObjectToPurge() |
26ac0430 | 758 | { |
e6ccf245 | 759 | /* Try to find a base entry */ |
760 | http->flags.purging = 1; | |
761 | lookingforstore = 1; | |
26ac0430 AJ |
762 | |
763 | // TODO: can we use purgeAllCached() here instead of doing the | |
764 | // getPublicByRequestMethod() dance? | |
3b13a8fd | 765 | StoreEntry::getPublicByRequestMethod(this, http->request, METHOD_GET); |
e6ccf245 | 766 | } |
767 | ||
c1520b67 AJ |
768 | // Purges all entries with a given url |
769 | // TODO: move to SideAgent parent, when we have one | |
60745f24 | 770 | /* |
771 | * We probably cannot purge Vary-affected responses because their MD5 | |
772 | * keys depend on vary headers. | |
773 | */ | |
c1520b67 | 774 | void |
90bd689c | 775 | purgeEntriesByUrl(HttpRequest * req, const char *url) |
c1520b67 | 776 | { |
8dceeee3 BR |
777 | #if USE_HTCP |
778 | bool get_or_head_sent = false; | |
779 | #endif | |
26ac0430 | 780 | |
c1520b67 AJ |
781 | for (HttpRequestMethod m(METHOD_NONE); m != METHOD_ENUM_END; ++m) { |
782 | if (m.isCacheble()) { | |
783 | if (StoreEntry *entry = storeGetPublic(url, m)) { | |
784 | debugs(88, 5, "purging " << RequestMethodStr(m) << ' ' << url); | |
90bd689c | 785 | #if USE_HTCP |
8dceeee3 BR |
786 | neighborsHtcpClear(entry, url, req, m, HTCP_CLR_INVALIDATION); |
787 | if (m == METHOD_GET || m == METHOD_HEAD) { | |
788 | get_or_head_sent = true; | |
789 | } | |
90bd689c | 790 | #endif |
8dceeee3 | 791 | entry->release(); |
c1520b67 AJ |
792 | } |
793 | } | |
794 | } | |
8dceeee3 BR |
795 | |
796 | #if USE_HTCP | |
797 | if (!get_or_head_sent) { | |
798 | neighborsHtcpClear(NULL, url, req, HttpRequestMethod(METHOD_GET), HTCP_CLR_INVALIDATION); | |
799 | } | |
800 | #endif | |
c1520b67 AJ |
801 | } |
802 | ||
26ac0430 | 803 | void |
60745f24 | 804 | clientReplyContext::purgeAllCached() |
805 | { | |
26ac0430 | 806 | const char *url = urlCanonical(http->request); |
90bd689c | 807 | purgeEntriesByUrl(http->request, url); |
35ececa5 | 808 | } |
60745f24 | 809 | |
e6ccf245 | 810 | void |
3b13a8fd | 811 | clientReplyContext::created(StoreEntry *newEntry) |
e6ccf245 | 812 | { |
813 | if (lookingforstore == 1) | |
62e76326 | 814 | purgeFoundGet(newEntry); |
e6ccf245 | 815 | else if (lookingforstore == 2) |
62e76326 | 816 | purgeFoundHead(newEntry); |
e6ccf245 | 817 | else if (lookingforstore == 3) |
62e76326 | 818 | purgeDoPurgeGet(newEntry); |
e6ccf245 | 819 | else if (lookingforstore == 4) |
62e76326 | 820 | purgeDoPurgeHead(newEntry); |
e6ccf245 | 821 | else if (lookingforstore == 5) |
62e76326 | 822 | identifyFoundObject(newEntry); |
e6ccf245 | 823 | } |
824 | ||
825 | void | |
3b13a8fd | 826 | clientReplyContext::purgeFoundGet(StoreEntry *newEntry) |
e6ccf245 | 827 | { |
828 | if (newEntry->isNull()) { | |
62e76326 | 829 | lookingforstore = 2; |
830 | StoreEntry::getPublicByRequestMethod(this, http->request, METHOD_HEAD); | |
e6ccf245 | 831 | } else |
62e76326 | 832 | purgeFoundObject (newEntry); |
e6ccf245 | 833 | } |
834 | ||
835 | void | |
3b13a8fd | 836 | clientReplyContext::purgeFoundHead(StoreEntry *newEntry) |
e6ccf245 | 837 | { |
838 | if (newEntry->isNull()) | |
62e76326 | 839 | purgeDoMissPurge(); |
e6ccf245 | 840 | else |
62e76326 | 841 | purgeFoundObject (newEntry); |
e6ccf245 | 842 | } |
62e76326 | 843 | |
e6ccf245 | 844 | void |
3b13a8fd | 845 | clientReplyContext::purgeFoundObject(StoreEntry *entry) |
e6ccf245 | 846 | { |
847 | assert (entry && !entry->isNull()); | |
e4b9a2f0 | 848 | |
849 | if (EBIT_TEST(entry->flags, ENTRY_SPECIAL)) { | |
850 | http->logType = LOG_TCP_DENIED; | |
be364179 | 851 | ErrorState *err = clientBuildError(ERR_ACCESS_DENIED, HTTP_FORBIDDEN, NULL, |
73c36fd9 | 852 | http->getConn()->clientConnection->remote, http->request); |
e4b9a2f0 | 853 | startError(err); |
854 | return; | |
855 | } | |
856 | ||
8bcf08e0 | 857 | StoreIOBuffer localTempBuffer; |
62e76326 | 858 | /* Swap in the metadata */ |
86a2f789 | 859 | http->storeEntry(entry); |
34266cde | 860 | |
3d0ac046 | 861 | http->storeEntry()->lock(); |
3900307b | 862 | http->storeEntry()->createMemObject(http->uri, http->log_uri); |
34266cde | 863 | |
86a2f789 | 864 | http->storeEntry()->mem_obj->method = http->request->method; |
34266cde | 865 | |
86a2f789 | 866 | sc = storeClientListAdd(http->storeEntry(), this); |
34266cde | 867 | |
62e76326 | 868 | http->logType = LOG_TCP_HIT; |
34266cde | 869 | |
62e76326 | 870 | reqofs = 0; |
34266cde | 871 | |
8bcf08e0 | 872 | localTempBuffer.offset = http->out.offset; |
34266cde | 873 | |
8bcf08e0 | 874 | localTempBuffer.length = next()->readBuffer.length; |
34266cde | 875 | |
8bcf08e0 | 876 | localTempBuffer.data = next()->readBuffer.data; |
34266cde | 877 | |
86a2f789 | 878 | storeClientCopy(sc, http->storeEntry(), |
8bcf08e0 | 879 | localTempBuffer, CacheHit, this); |
e6ccf245 | 880 | } |
881 | ||
882 | void | |
883 | clientReplyContext::purgeRequest() | |
edce4d98 | 884 | { |
bf8fe701 | 885 | debugs(88, 3, "Config2.onoff.enable_purge = " << |
886 | Config2.onoff.enable_purge); | |
62e76326 | 887 | |
edce4d98 | 888 | if (!Config2.onoff.enable_purge) { |
62e76326 | 889 | http->logType = LOG_TCP_DENIED; |
73c36fd9 | 890 | ErrorState *err = clientBuildError(ERR_ACCESS_DENIED, HTTP_FORBIDDEN, NULL, http->getConn()->clientConnection->remote, http->request); |
0655fa4d | 891 | startError(err); |
62e76326 | 892 | return; |
edce4d98 | 893 | } |
62e76326 | 894 | |
edce4d98 | 895 | /* Release both IP cache */ |
cc192b50 | 896 | ipcacheInvalidate(http->request->GetHost()); |
edce4d98 | 897 | |
e6ccf245 | 898 | if (!http->flags.purging) |
62e76326 | 899 | purgeRequestFindObjectToPurge(); |
e6ccf245 | 900 | else |
62e76326 | 901 | purgeDoMissPurge(); |
e6ccf245 | 902 | } |
903 | ||
904 | void | |
905 | clientReplyContext::purgeDoMissPurge() | |
906 | { | |
29b8d8d6 | 907 | http->logType = LOG_TCP_MISS; |
e6ccf245 | 908 | lookingforstore = 3; |
3b13a8fd | 909 | StoreEntry::getPublicByRequestMethod(this,http->request, METHOD_GET); |
e6ccf245 | 910 | } |
911 | ||
912 | void | |
3b13a8fd | 913 | clientReplyContext::purgeDoPurgeGet(StoreEntry *newEntry) |
e6ccf245 | 914 | { |
915 | assert (newEntry); | |
916 | /* Move to new() when that is created */ | |
917 | purgeStatus = HTTP_NOT_FOUND; | |
918 | ||
919 | if (!newEntry->isNull()) { | |
62e76326 | 920 | /* Release the cached URI */ |
bf8fe701 | 921 | debugs(88, 4, "clientPurgeRequest: GET '" << newEntry->url() << "'" ); |
8dceeee3 BR |
922 | #if USE_HTCP |
923 | neighborsHtcpClear(newEntry, NULL, http->request, HttpRequestMethod(METHOD_GET), HTCP_CLR_PURGE); | |
924 | #endif | |
5f33b71d | 925 | newEntry->release(); |
62e76326 | 926 | purgeStatus = HTTP_OK; |
edce4d98 | 927 | } |
62e76326 | 928 | |
e6ccf245 | 929 | lookingforstore = 4; |
3b13a8fd | 930 | StoreEntry::getPublicByRequestMethod(this, http->request, METHOD_HEAD); |
e6ccf245 | 931 | } |
932 | ||
933 | void | |
3b13a8fd | 934 | clientReplyContext::purgeDoPurgeHead(StoreEntry *newEntry) |
e6ccf245 | 935 | { |
4fc0ac76 | 936 | if (newEntry && !newEntry->isNull()) { |
bf8fe701 | 937 | debugs(88, 4, "clientPurgeRequest: HEAD '" << newEntry->url() << "'" ); |
8dceeee3 BR |
938 | #if USE_HTCP |
939 | neighborsHtcpClear(newEntry, NULL, http->request, HttpRequestMethod(METHOD_HEAD), HTCP_CLR_PURGE); | |
940 | #endif | |
5f33b71d | 941 | newEntry->release(); |
62e76326 | 942 | purgeStatus = HTTP_OK; |
edce4d98 | 943 | } |
62e76326 | 944 | |
edce4d98 | 945 | /* And for Vary, release the base URI if none of the headers was included in the request */ |
62e76326 | 946 | |
edce4d98 | 947 | if (http->request->vary_headers |
62e76326 | 948 | && !strstr(http->request->vary_headers, "=")) { |
949 | StoreEntry *entry = storeGetPublic(urlCanonical(http->request), METHOD_GET); | |
950 | ||
951 | if (entry) { | |
bf8fe701 | 952 | debugs(88, 4, "clientPurgeRequest: Vary GET '" << entry->url() << "'" ); |
8dceeee3 BR |
953 | #if USE_HTCP |
954 | neighborsHtcpClear(entry, NULL, http->request, HttpRequestMethod(METHOD_GET), HTCP_CLR_PURGE); | |
955 | #endif | |
5f33b71d | 956 | entry->release(); |
62e76326 | 957 | purgeStatus = HTTP_OK; |
958 | } | |
959 | ||
960 | entry = storeGetPublic(urlCanonical(http->request), METHOD_HEAD); | |
961 | ||
962 | if (entry) { | |
bf8fe701 | 963 | debugs(88, 4, "clientPurgeRequest: Vary HEAD '" << entry->url() << "'" ); |
8dceeee3 BR |
964 | #if USE_HTCP |
965 | neighborsHtcpClear(entry, NULL, http->request, HttpRequestMethod(METHOD_HEAD), HTCP_CLR_PURGE); | |
966 | #endif | |
5f33b71d | 967 | entry->release(); |
62e76326 | 968 | purgeStatus = HTTP_OK; |
969 | } | |
edce4d98 | 970 | } |
62e76326 | 971 | |
edce4d98 | 972 | /* |
973 | * Make a new entry to hold the reply to be written | |
974 | * to the client. | |
975 | */ | |
528b2c61 | 976 | /* FIXME: This doesn't need to go through the store. Simply |
977 | * push down the client chain | |
978 | */ | |
0655fa4d | 979 | createStoreEntry(http->request->method, request_flags()); |
62e76326 | 980 | |
0655fa4d | 981 | triggerInitialStoreRead(); |
62e76326 | 982 | |
7dc5f514 | 983 | HttpReply *rep = new HttpReply; |
11992b6f | 984 | rep->setHeaders(purgeStatus, NULL, NULL, 0, 0, -1); |
7dc5f514 | 985 | http->storeEntry()->replaceHttpReply(rep); |
86a2f789 | 986 | http->storeEntry()->complete(); |
edce4d98 | 987 | } |
988 | ||
989 | void | |
0655fa4d | 990 | clientReplyContext::traceReply(clientStreamNode * node) |
edce4d98 | 991 | { |
076df709 | 992 | clientStreamNode *nextNode = (clientStreamNode *)node->node.next->data; |
8bcf08e0 | 993 | StoreIOBuffer localTempBuffer; |
0655fa4d | 994 | createStoreEntry(http->request->method, request_flags()); |
076df709 FC |
995 | localTempBuffer.offset = nextNode->readBuffer.offset + headers_sz; |
996 | localTempBuffer.length = nextNode->readBuffer.length; | |
997 | localTempBuffer.data = nextNode->readBuffer.data; | |
86a2f789 | 998 | storeClientCopy(sc, http->storeEntry(), |
8bcf08e0 | 999 | localTempBuffer, SendMoreData, this); |
d88e3c49 | 1000 | http->storeEntry()->releaseRequest(); |
3900307b | 1001 | http->storeEntry()->buffer(); |
7dc5f514 | 1002 | HttpReply *rep = new HttpReply; |
11992b6f | 1003 | rep->setHeaders(HTTP_OK, NULL, "text/plain", http->request->prefixLen(), 0, squid_curtime); |
db237875 | 1004 | http->storeEntry()->replaceHttpReply(rep); |
5cafad19 | 1005 | http->request->swapOut(http->storeEntry()); |
86a2f789 | 1006 | http->storeEntry()->complete(); |
edce4d98 | 1007 | } |
1008 | ||
1009 | #define SENDING_BODY 0 | |
1010 | #define SENDING_HDRSONLY 1 | |
1011 | int | |
0655fa4d | 1012 | clientReplyContext::checkTransferDone() |
edce4d98 | 1013 | { |
86a2f789 | 1014 | StoreEntry *entry = http->storeEntry(); |
62e76326 | 1015 | |
edce4d98 | 1016 | if (entry == NULL) |
62e76326 | 1017 | return 0; |
1018 | ||
1019 | /* | |
edce4d98 | 1020 | * For now, 'done_copying' is used for special cases like |
1021 | * Range and HEAD requests. | |
1022 | */ | |
0655fa4d | 1023 | if (http->flags.done_copying) |
62e76326 | 1024 | return 1; |
1025 | ||
4ad60609 AR |
1026 | if (http->request->flags.chunked_reply && !flags.complete) { |
1027 | // last-chunk was not sent | |
1028 | return 0; | |
1029 | } | |
1030 | ||
edce4d98 | 1031 | /* |
1032 | * Handle STORE_OK objects. | |
1033 | * objectLen(entry) will be set proprely. | |
26ac0430 | 1034 | * RC: Does objectLen(entry) include the Headers? |
0e3be1ea | 1035 | * RC: Yes. |
edce4d98 | 1036 | */ |
1037 | if (entry->store_status == STORE_OK) { | |
0655fa4d | 1038 | return storeOKTransferDone(); |
e39b9382 | 1039 | } else { |
0655fa4d | 1040 | return storeNotOKTransferDone(); |
edce4d98 | 1041 | } |
e39b9382 | 1042 | } |
1043 | ||
1044 | int | |
1045 | clientReplyContext::storeOKTransferDone() const | |
1046 | { | |
aa1a691e AR |
1047 | assert(http->storeEntry()->objectLen() >= 0); |
1048 | assert(http->storeEntry()->objectLen() >= headers_sz); | |
47f6e231 | 1049 | if (http->out.offset >= http->storeEntry()->objectLen() - headers_sz) { |
26ac0430 AJ |
1050 | debugs(88,3,HERE << "storeOKTransferDone " << |
1051 | " out.offset=" << http->out.offset << | |
1052 | " objectLen()=" << http->storeEntry()->objectLen() << | |
1053 | " headers_sz=" << headers_sz); | |
62e76326 | 1054 | return 1; |
47f6e231 | 1055 | } |
62e76326 | 1056 | |
e39b9382 | 1057 | return 0; |
1058 | } | |
1059 | ||
1060 | int | |
1061 | clientReplyContext::storeNotOKTransferDone() const | |
1062 | { | |
edce4d98 | 1063 | /* |
1064 | * Now, handle STORE_PENDING objects | |
1065 | */ | |
86a2f789 | 1066 | MemObject *mem = http->storeEntry()->mem_obj; |
edce4d98 | 1067 | assert(mem != NULL); |
1068 | assert(http->request != NULL); | |
0e3be1ea | 1069 | /* mem->reply was wrong because it uses the UPSTREAM header length!!! */ |
8bcf08e0 | 1070 | HttpReply const *curReply = mem->getReply(); |
62e76326 | 1071 | |
e39b9382 | 1072 | if (headers_sz == 0) |
62e76326 | 1073 | /* haven't found end of headers yet */ |
1074 | return 0; | |
e39b9382 | 1075 | |
edce4d98 | 1076 | /* |
1077 | * Figure out how much data we are supposed to send. | |
1078 | * If we are sending a body and we don't have a content-length, | |
1079 | * then we must wait for the object to become STORE_OK. | |
1080 | */ | |
8bcf08e0 | 1081 | if (curReply->content_length < 0) |
62e76326 | 1082 | return 0; |
e39b9382 | 1083 | |
8bcf08e0 | 1084 | int64_t expectedLength = curReply->content_length + http->out.headers_sz; |
62e76326 | 1085 | |
e39b9382 | 1086 | if (http->out.size < expectedLength) |
62e76326 | 1087 | return 0; |
47f6e231 | 1088 | else { |
26ac0430 AJ |
1089 | debugs(88,3,HERE << "storeNotOKTransferDone " << |
1090 | " out.size=" << http->out.size << | |
1091 | " expectedLength=" << expectedLength); | |
62e76326 | 1092 | return 1; |
47f6e231 | 1093 | } |
edce4d98 | 1094 | } |
1095 | ||
1096 | ||
edce4d98 | 1097 | /* A write has completed, what is the next status based on the |
1098 | * canonical request data? | |
1099 | * 1 something is wrong | |
1100 | * 0 nothing is wrong. | |
1101 | * | |
1102 | */ | |
1103 | int | |
59a1efb2 | 1104 | clientHttpRequestStatus(int fd, ClientHttpRequest const *http) |
edce4d98 | 1105 | { |
062f7f4e FC |
1106 | #if SIZEOF_INT64_T == 4 |
1107 | if (http->out.size > 0x7FFF0000) { | |
1108 | debugs(88, 1, "WARNING: closing FD " << fd << " to prevent out.size counter overflow"); | |
1109 | debugs(88, 1, "\tclient " << http->getConn()->peer); | |
1110 | debugs(88, 1, "\treceived " << http->out.size << " bytes"); | |
1111 | debugs(88, 1, "\tURI " << http->log_uri); | |
1112 | return 1; | |
1113 | } | |
1114 | ||
1115 | if (http->out.offset > 0x7FFF0000) { | |
1116 | debugs(88, 1, "WARNING: closing FD " << fd < " to prevent out.offset counter overflow"); | |
1117 | debugs(88, 1, "\tclient " << http->getConn()->peer); | |
1118 | debugs(88, 1, "\treceived " << http->out.size << " bytes, offset " << http->out.offset); | |
1119 | debugs(88, 1, "\tURI " << http->log_uri); | |
1120 | return 1; | |
1121 | } | |
1122 | ||
1123 | #endif | |
edce4d98 | 1124 | return 0; |
1125 | } | |
1126 | ||
62e76326 | 1127 | /* Preconditions: |
edce4d98 | 1128 | * *http is a valid structure. |
1129 | * fd is either -1, or an open fd. | |
1130 | * | |
1131 | * TODO: enumify this | |
1132 | * | |
1133 | * This function is used by any http request sink, to determine the status | |
1134 | * of the object. | |
1135 | */ | |
1136 | clientStream_status_t | |
59a1efb2 | 1137 | clientReplyStatus(clientStreamNode * aNode, ClientHttpRequest * http) |
edce4d98 | 1138 | { |
0655fa4d | 1139 | clientReplyContext *context = dynamic_cast<clientReplyContext *>(aNode->data.getRaw()); |
1140 | assert (context); | |
1141 | assert (context->http == http); | |
1142 | return context->replyStatus(); | |
1143 | } | |
1144 | ||
1145 | clientStream_status_t | |
1146 | clientReplyContext::replyStatus() | |
1147 | { | |
edce4d98 | 1148 | int done; |
1149 | /* Here because lower nodes don't need it */ | |
62e76326 | 1150 | |
3daaed1a | 1151 | if (http->storeEntry() == NULL) { |
1152 | debugs(88, 5, "clientReplyStatus: no storeEntry"); | |
62e76326 | 1153 | return STREAM_FAILED; /* yuck, but what can we do? */ |
3daaed1a | 1154 | } |
62e76326 | 1155 | |
3daaed1a | 1156 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) { |
62e76326 | 1157 | /* TODO: Could upstream read errors (result.flags.error) be |
1158 | * lost, and result in undersize requests being considered | |
1159 | * complete. Should we tcp reset such connections ? | |
1160 | */ | |
3daaed1a | 1161 | debugs(88, 5, "clientReplyStatus: aborted storeEntry"); |
62e76326 | 1162 | return STREAM_FAILED; |
3daaed1a | 1163 | } |
62e76326 | 1164 | |
0655fa4d | 1165 | if ((done = checkTransferDone()) != 0 || flags.complete) { |
bf8fe701 | 1166 | debugs(88, 5, "clientReplyStatus: transfer is DONE"); |
62e76326 | 1167 | /* Ok we're finished, but how? */ |
1168 | ||
4ad60609 AR |
1169 | const int64_t expectedBodySize = |
1170 | http->storeEntry()->getReply()->bodySize(http->request->method); | |
1171 | if (!http->request->flags.proxy_keepalive && expectedBodySize < 0) { | |
bf8fe701 | 1172 | debugs(88, 5, "clientReplyStatus: closing, content_length < 0"); |
62e76326 | 1173 | return STREAM_FAILED; |
1174 | } | |
1175 | ||
1176 | if (!done) { | |
bf8fe701 | 1177 | debugs(88, 5, "clientReplyStatus: closing, !done, but read 0 bytes"); |
62e76326 | 1178 | return STREAM_FAILED; |
1179 | } | |
1180 | ||
4ad60609 | 1181 | if (expectedBodySize >= 0 && !http->gotEnough()) { |
bf8fe701 | 1182 | debugs(88, 5, "clientReplyStatus: client didn't get all it expected"); |
62e76326 | 1183 | return STREAM_UNPLANNED_COMPLETE; |
1184 | } | |
1185 | ||
1186 | if (http->request->flags.proxy_keepalive) { | |
bf8fe701 | 1187 | debugs(88, 5, "clientReplyStatus: stream complete and can keepalive"); |
62e76326 | 1188 | return STREAM_COMPLETE; |
1189 | } | |
1190 | ||
bf8fe701 | 1191 | debugs(88, 5, "clientReplyStatus: stream was not expected to complete!"); |
62e76326 | 1192 | return STREAM_UNPLANNED_COMPLETE; |
edce4d98 | 1193 | } |
62e76326 | 1194 | |
16611143 | 1195 | // XXX: Should this be checked earlier? We could return above w/o checking. |
1196 | if (reply->receivedBodyTooLarge(*http->request, http->out.offset - 4096)) { | |
b51aec66 | 1197 | /* 4096 is a margin for the HTTP headers included in out.offset */ |
bf8fe701 | 1198 | debugs(88, 5, "clientReplyStatus: client reply body is too large"); |
62e76326 | 1199 | return STREAM_FAILED; |
0e3be1ea | 1200 | } |
62e76326 | 1201 | |
edce4d98 | 1202 | return STREAM_NONE; |
1203 | } | |
1204 | ||
62e76326 | 1205 | /* Responses with no body will not have a content-type header, |
edce4d98 | 1206 | * which breaks the rep_mime_type acl, which |
1207 | * coincidentally, is the most common acl for reply access lists. | |
1208 | * A better long term fix for this is to allow acl matchs on the various | |
26ac0430 AJ |
1209 | * status codes, and then supply a default ruleset that puts these |
1210 | * codes before any user defines access entries. That way the user | |
edce4d98 | 1211 | * can choose to block these responses where appropriate, but won't get |
1212 | * mysterious breakages. | |
1213 | */ | |
0655fa4d | 1214 | bool |
1215 | clientReplyContext::alwaysAllowResponse(http_status sline) const | |
edce4d98 | 1216 | { |
4ef4b952 | 1217 | bool result; |
1218 | ||
edce4d98 | 1219 | switch (sline) { |
62e76326 | 1220 | |
edce4d98 | 1221 | case HTTP_CONTINUE: |
62e76326 | 1222 | |
edce4d98 | 1223 | case HTTP_SWITCHING_PROTOCOLS: |
62e76326 | 1224 | |
edce4d98 | 1225 | case HTTP_PROCESSING: |
62e76326 | 1226 | |
edce4d98 | 1227 | case HTTP_NO_CONTENT: |
62e76326 | 1228 | |
edce4d98 | 1229 | case HTTP_NOT_MODIFIED: |
4ef4b952 | 1230 | result = true; |
62e76326 | 1231 | break; |
1232 | ||
edce4d98 | 1233 | default: |
4ef4b952 | 1234 | result = false; |
edce4d98 | 1235 | } |
4ef4b952 | 1236 | |
1237 | return result; | |
edce4d98 | 1238 | } |
1239 | ||
a5c8d64d AJ |
1240 | /** |
1241 | * Generate the reply headers sent to client. | |
1242 | * | |
1243 | * Filters out unwanted entries and hop-by-hop from original reply header | |
1244 | * then adds extra entries if we have more info than origin server | |
1245 | * then adds Squid specific entries | |
edce4d98 | 1246 | */ |
0655fa4d | 1247 | void |
1248 | clientReplyContext::buildReplyHeader() | |
edce4d98 | 1249 | { |
7dc5f514 | 1250 | HttpHeader *hdr = &reply->header; |
c8be6d7b | 1251 | int is_hit = logTypeIsATcpHit(http->logType); |
190154cf | 1252 | HttpRequest *request = http->request; |
edce4d98 | 1253 | #if DONT_FILTER_THESE |
1254 | /* but you might want to if you run Squid as an HTTP accelerator */ | |
a9925b40 | 1255 | /* hdr->delById(HDR_ACCEPT_RANGES); */ |
1256 | hdr->delById(HDR_ETAG); | |
edce4d98 | 1257 | #endif |
62e76326 | 1258 | |
edce4d98 | 1259 | if (is_hit) |
a9925b40 | 1260 | hdr->delById(HDR_SET_COOKIE); |
f89d4012 | 1261 | // TODO: RFC 2965 : Must honour Cache-Control: no-cache="set-cookie2" and remove header. |
62e76326 | 1262 | |
23c6d7e7 | 1263 | // if there is not configured a peer proxy with login=PASS or login=PASSTHRU option enabled |
dcf3665b | 1264 | // remove the Proxy-Authenticate header |
23c6d7e7 | 1265 | if ( !request->peer_login || (strcmp(request->peer_login,"PASS") != 0 && strcmp(request->peer_login,"PASSTHRU") != 0)) |
26ac0430 | 1266 | reply->header.delById(HDR_PROXY_AUTHENTICATE); |
dcf3665b | 1267 | |
2cdeea82 | 1268 | reply->header.removeHopByHopEntries(); |
62e76326 | 1269 | |
1270 | // if (request->range) | |
7dc5f514 | 1271 | // clientBuildRangeHeader(http, reply); |
a5c8d64d | 1272 | |
edce4d98 | 1273 | /* |
1274 | * Add a estimated Age header on cache hits. | |
1275 | */ | |
1276 | if (is_hit) { | |
62e76326 | 1277 | /* |
1278 | * Remove any existing Age header sent by upstream caches | |
1279 | * (note that the existing header is passed along unmodified | |
1280 | * on cache misses) | |
1281 | */ | |
a9925b40 | 1282 | hdr->delById(HDR_AGE); |
62e76326 | 1283 | /* |
1284 | * This adds the calculated object age. Note that the details of the | |
1285 | * age calculation is performed by adjusting the timestamp in | |
3900307b | 1286 | * StoreEntry::timestampsSet(), not here. |
62e76326 | 1287 | */ |
a5c8d64d AJ |
1288 | #if DEAD_CODE |
1289 | // XXX: realy useless? or is there a bug now that this is detatched from the below if-sequence ? | |
1290 | // looks like this pre-if was supposed to be the browser workaround... | |
86a2f789 | 1291 | if (NULL == http->storeEntry()) |
62e76326 | 1292 | (void) 0; |
86a2f789 | 1293 | else if (http->storeEntry()->timestamp < 0) |
62e76326 | 1294 | (void) 0; |
a5c8d64d | 1295 | #endif |
bbe58ab5 | 1296 | |
1297 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_SPECIAL)) { | |
a9925b40 | 1298 | hdr->delById(HDR_DATE); |
1299 | hdr->insertTime(HDR_DATE, squid_curtime); | |
90fa5816 AJ |
1300 | } else if (http->getConn() && http->getConn()->port->actAsOrigin) { |
1301 | // Swap the Date: header to current time if we are simulating an origin | |
fd49b08b A |
1302 | HttpHeaderEntry *h = hdr->findEntry(HDR_DATE); |
1303 | if (h) | |
1304 | hdr->putExt("X-Origin-Date", h->value.termedBuf()); | |
90fa5816 AJ |
1305 | hdr->delById(HDR_DATE); |
1306 | hdr->insertTime(HDR_DATE, squid_curtime); | |
fd49b08b A |
1307 | h = hdr->findEntry(HDR_EXPIRES); |
1308 | if (h && http->storeEntry()->expires >= 0) { | |
1309 | hdr->putExt("X-Origin-Expires", h->value.termedBuf()); | |
1310 | hdr->delById(HDR_EXPIRES); | |
1311 | hdr->insertTime(HDR_EXPIRES, squid_curtime + http->storeEntry()->expires - http->storeEntry()->timestamp); | |
1312 | } | |
90fa5816 AJ |
1313 | if (http->storeEntry()->timestamp <= squid_curtime) { |
1314 | // put X-Cache-Age: instead of Age: | |
fd49b08b A |
1315 | char age[64]; |
1316 | snprintf(age, sizeof(age), "%ld", (long int) squid_curtime - http->storeEntry()->timestamp); | |
1317 | hdr->putExt("X-Cache-Age", age); | |
1318 | } | |
a81e7089 | 1319 | } else if (http->storeEntry()->timestamp <= squid_curtime) { |
a9925b40 | 1320 | hdr->putInt(HDR_AGE, |
1321 | squid_curtime - http->storeEntry()->timestamp); | |
62e76326 | 1322 | /* Signal old objects. NB: rfc 2616 is not clear, |
1323 | * by implication, on whether we should do this to all | |
1324 | * responses, or only cache hits. | |
1325 | * 14.46 states it ONLY applys for heuristically caclulated | |
1326 | * freshness values, 13.2.4 doesn't specify the same limitation. | |
1327 | * We interpret RFC 2616 under the combination. | |
1328 | */ | |
1329 | /* TODO: if maxage or s-maxage is present, don't do this */ | |
1330 | ||
86a2f789 | 1331 | if (squid_curtime - http->storeEntry()->timestamp >= 86400) { |
8bcf08e0 FC |
1332 | char tbuf[512]; |
1333 | snprintf (tbuf, sizeof(tbuf), "%s %s %s", | |
62e76326 | 1334 | "113", ThisCache, |
1335 | "This cache hit is still fresh and more than 1 day old"); | |
8bcf08e0 | 1336 | hdr->putStr(HDR_WARNING, tbuf); |
62e76326 | 1337 | } |
1338 | } | |
a5c8d64d | 1339 | } |
528b2c61 | 1340 | |
a5c8d64d AJ |
1341 | /* RFC 2616: Section 14.18 |
1342 | * | |
1343 | * Add a Date: header if missing. | |
1344 | * We have access to a clock therefore are required to amend any shortcoming in servers. | |
1345 | * | |
1346 | * NP: done after Age: to prevent ENTRY_SPECIAL double-handling this header. | |
1347 | */ | |
1348 | if ( !hdr->has(HDR_DATE) ) { | |
f0dedeb5 | 1349 | if (!http->storeEntry()) |
a5c8d64d | 1350 | hdr->insertTime(HDR_DATE, squid_curtime); |
f0dedeb5 AJ |
1351 | else if (http->storeEntry()->timestamp > 0) |
1352 | hdr->insertTime(HDR_DATE, http->storeEntry()->timestamp); | |
1353 | else { | |
e78ae89a AJ |
1354 | debugs(88,DBG_IMPORTANT,"WARNING: An error inside Squid has caused an HTTP reply without Date:. Please report this:"); |
1355 | /* dump something useful about the problem */ | |
1356 | http->storeEntry()->dump(DBG_IMPORTANT); | |
f0dedeb5 | 1357 | } |
edce4d98 | 1358 | } |
62e76326 | 1359 | |
bcfba8bd AR |
1360 | // add Warnings required by RFC 2616 if serving a stale hit |
1361 | if (http->request->flags.stale_if_hit && logTypeIsATcpHit(http->logType)) { | |
1362 | hdr->putWarning(110, "Response is stale"); | |
1363 | if (http->request->flags.need_validation) | |
1364 | hdr->putWarning(111, "Revalidation failed"); | |
1365 | } | |
1366 | ||
0bd9aa82 | 1367 | /* Filter unproxyable authentication types */ |
ddd31ed3 | 1368 | if (http->logType != LOG_TCP_DENIED && |
d67acb4e | 1369 | hdr->has(HDR_WWW_AUTHENTICATE)) { |
62e76326 | 1370 | HttpHeaderPos pos = HttpHeaderInitPos; |
1371 | HttpHeaderEntry *e; | |
1372 | ||
26ac0430 | 1373 | int connection_auth_blocked = 0; |
a9925b40 | 1374 | while ((e = hdr->getEntry(&pos))) { |
d67acb4e | 1375 | if (e->id == HDR_WWW_AUTHENTICATE) { |
5b4117d8 | 1376 | const char *value = e->value.rawBuf(); |
62e76326 | 1377 | |
1378 | if ((strncasecmp(value, "NTLM", 4) == 0 && | |
1379 | (value[4] == '\0' || value[4] == ' ')) | |
1380 | || | |
1381 | (strncasecmp(value, "Negotiate", 9) == 0 && | |
d67acb4e | 1382 | (value[9] == '\0' || value[9] == ' ')) |
26ac0430 AJ |
1383 | || |
1384 | (strncasecmp(value, "Kerberos", 8) == 0 && | |
1385 | (value[8] == '\0' || value[8] == ' '))) { | |
1386 | if (request->flags.connection_auth_disabled) { | |
1387 | hdr->delAt(pos, connection_auth_blocked); | |
d67acb4e AJ |
1388 | continue; |
1389 | } | |
26ac0430 AJ |
1390 | request->flags.must_keepalive = 1; |
1391 | if (!request->flags.accelerated && !request->flags.intercepted) { | |
d67acb4e | 1392 | httpHeaderPutStrf(hdr, HDR_PROXY_SUPPORT, "Session-Based-Authentication"); |
26ac0430 AJ |
1393 | /* |
1394 | We send "[Proxy-]Connection: Proxy-Support" header to mark | |
1395 | Proxy-Support as a hop-by-hop header for intermediaries that do not | |
1396 | understand the semantics of this header. The RFC should have included | |
1397 | this recommendation. | |
1398 | */ | |
d67acb4e AJ |
1399 | httpHeaderPutStrf(hdr, HDR_CONNECTION, "Proxy-support"); |
1400 | } | |
1401 | break; | |
26ac0430 | 1402 | } |
62e76326 | 1403 | } |
1404 | } | |
d67acb4e AJ |
1405 | |
1406 | if (connection_auth_blocked) | |
ba9fb01d | 1407 | hdr->refreshMask(); |
0bd9aa82 | 1408 | } |
62e76326 | 1409 | |
2f1431ea | 1410 | #if USE_AUTH |
edce4d98 | 1411 | /* Handle authentication headers */ |
26ac0430 AJ |
1412 | if (http->logType == LOG_TCP_DENIED && |
1413 | ( reply->sline.status == HTTP_PROXY_AUTHENTICATION_REQUIRED || | |
1414 | reply->sline.status == HTTP_UNAUTHORIZED) | |
1415 | ) { | |
1416 | /* Add authentication header */ | |
1417 | /*! \todo alter errorstate to be accel on|off aware. The 0 on the next line | |
1418 | * depends on authenticate behaviour: all schemes to date send no extra | |
1419 | * data on 407/401 responses, and do not check the accel state on 401/407 | |
1420 | * responses | |
1421 | */ | |
1422 | authenticateFixHeader(reply, request->auth_user_request, request, 0, 1); | |
a33a428a AJ |
1423 | } else if (request->auth_user_request != NULL) |
1424 | authenticateFixHeader(reply, request->auth_user_request, request, http->flags.accel, 0); | |
2f1431ea | 1425 | #endif |
62e76326 | 1426 | |
edce4d98 | 1427 | /* Append X-Cache */ |
1428 | httpHeaderPutStrf(hdr, HDR_X_CACHE, "%s from %s", | |
62e76326 | 1429 | is_hit ? "HIT" : "MISS", getMyHostname()); |
1430 | ||
edce4d98 | 1431 | #if USE_CACHE_DIGESTS |
1432 | /* Append X-Cache-Lookup: -- temporary hack, to be removed @?@ @?@ */ | |
1433 | httpHeaderPutStrf(hdr, HDR_X_CACHE_LOOKUP, "%s from %s:%d", | |
0655fa4d | 1434 | lookup_type ? lookup_type : "NONE", |
62e76326 | 1435 | getMyHostname(), getMyPort()); |
1436 | ||
edce4d98 | 1437 | #endif |
62e76326 | 1438 | |
4ad60609 | 1439 | const bool maySendChunkedReply = !request->multipartRangeRequest() && |
4cb2536f | 1440 | (request->http_ver >= HttpVersion(1, 1)); |
4ad60609 | 1441 | |
f529bb20 | 1442 | /* Check whether we should send keep-alive */ |
58850d15 | 1443 | if (!Config.onoff.error_pconns && reply->sline.status >= 400 && !request->flags.must_keepalive) { |
bf8fe701 | 1444 | debugs(33, 3, "clientBuildReplyHeader: Error, don't keep-alive"); |
58850d15 | 1445 | request->flags.proxy_keepalive = 0; |
af6a12ee | 1446 | } else if (!Config.onoff.client_pconns && !request->flags.must_keepalive) { |
17b57873 | 1447 | debugs(33, 2, "clientBuildReplyHeader: Connection Keep-Alive not requested by admin or client"); |
f5e45ad8 | 1448 | request->flags.proxy_keepalive = 0; |
af6a12ee | 1449 | } else if (request->flags.proxy_keepalive && shutting_down) { |
f529bb20 | 1450 | debugs(88, 3, "clientBuildReplyHeader: Shutting down, don't keep-alive."); |
1451 | request->flags.proxy_keepalive = 0; | |
af6a12ee | 1452 | } else if (request->flags.connection_auth && !reply->keep_alive) { |
26ac0430 AJ |
1453 | debugs(33, 2, "clientBuildReplyHeader: Connection oriented auth but server side non-persistent"); |
1454 | request->flags.proxy_keepalive = 0; | |
4ad60609 | 1455 | } else if (reply->bodySize(request->method) < 0 && !maySendChunkedReply) { |
17b57873 AJ |
1456 | debugs(88, 3, "clientBuildReplyHeader: can't keep-alive, unknown body size" ); |
1457 | request->flags.proxy_keepalive = 0; | |
af6a12ee | 1458 | } else if (fdUsageHigh()&& !request->flags.must_keepalive) { |
17b57873 AJ |
1459 | debugs(88, 3, "clientBuildReplyHeader: Not many unused FDs, can't keep-alive"); |
1460 | request->flags.proxy_keepalive = 0; | |
1461 | } | |
d67acb4e | 1462 | |
4ad60609 AR |
1463 | // Decide if we send chunked reply |
1464 | if (maySendChunkedReply && | |
4cb2536f A |
1465 | request->flags.proxy_keepalive && |
1466 | reply->bodySize(request->method) < 0) { | |
4ad60609 AR |
1467 | debugs(88, 3, "clientBuildReplyHeader: chunked reply"); |
1468 | request->flags.chunked_reply = 1; | |
1469 | hdr->putStr(HDR_TRANSFER_ENCODING, "chunked"); | |
1470 | } | |
f529bb20 | 1471 | |
4dea3fdd | 1472 | /* Append VIA */ |
92caea77 | 1473 | if (Config.onoff.via) { |
62e76326 | 1474 | LOCAL_ARRAY(char, bbuf, MAX_URL + 32); |
30abd221 | 1475 | String strVia; |
26ac0430 | 1476 | hdr->getList(HDR_VIA, &strVia); |
88331887 | 1477 | snprintf(bbuf, MAX_URL + 32, "%d.%d %s", |
7dc5f514 | 1478 | reply->sline.version.major, |
1479 | reply->sline.version.minor, | |
62e76326 | 1480 | ThisCache); |
1481 | strListAdd(&strVia, bbuf, ','); | |
a9925b40 | 1482 | hdr->delById(HDR_VIA); |
5b4117d8 | 1483 | hdr->putStr(HDR_VIA, strVia.termedBuf()); |
c8be6d7b | 1484 | } |
95e78500 AJ |
1485 | /* Signal keep-alive or close explicitly */ |
1486 | hdr->putStr(HDR_CONNECTION, request->flags.proxy_keepalive ? "keep-alive" : "close"); | |
62e76326 | 1487 | |
edce4d98 | 1488 | #if ADD_X_REQUEST_URI |
1489 | /* | |
1490 | * Knowing the URI of the request is useful when debugging persistent | |
1491 | * connections in a client; we cannot guarantee the order of http headers, | |
1492 | * but X-Request-URI is likely to be the very last header to ease use from a | |
1493 | * debugger [hdr->entries.count-1]. | |
1494 | */ | |
a9925b40 | 1495 | hdr->putStr(HDR_X_REQUEST_URI, |
1496 | http->memOjbect()->url ? http->memObject()->url : http->uri); | |
62e76326 | 1497 | |
edce4d98 | 1498 | #endif |
62e76326 | 1499 | |
45cca89d AJ |
1500 | /* Surrogate-Control requires Surrogate-Capability from upstream to pass on */ |
1501 | if ( hdr->has(HDR_SURROGATE_CONTROL) ) { | |
1502 | if (!request->header.has(HDR_SURROGATE_CAPABILITY)) { | |
1503 | hdr->delById(HDR_SURROGATE_CONTROL); | |
1504 | } | |
1505 | /* TODO: else case: drop any controls intended specifically for our surrogate ID */ | |
1506 | } | |
1507 | ||
8c01ada0 | 1508 | httpHdrMangleList(hdr, request, ROR_REPLY); |
edce4d98 | 1509 | } |
1510 | ||
1511 | ||
0655fa4d | 1512 | void |
b297bcd0 | 1513 | clientReplyContext::cloneReply() |
edce4d98 | 1514 | { |
7dc5f514 | 1515 | assert(reply == NULL); |
0655fa4d | 1516 | |
b297bcd0 | 1517 | HttpReply *rep = http->storeEntry()->getReply()->clone(); |
7dc5f514 | 1518 | |
1519 | reply = HTTPMSGLOCK(rep); | |
1520 | ||
0c3d3f65 | 1521 | if (reply->sline.protocol == AnyP::PROTO_HTTP) { |
871c031f AJ |
1522 | /* RFC 2616 requires us to advertise our 1.1 version (but only on real HTTP traffic) */ |
1523 | reply->sline.version = HttpVersion(1,1); | |
e77d7ef0 | 1524 | } |
0655fa4d | 1525 | |
1526 | /* do header conversions */ | |
1527 | buildReplyHeader(); | |
edce4d98 | 1528 | } |
1529 | ||
e6ccf245 | 1530 | void |
1531 | clientReplyContext::identifyStoreObject() | |
edce4d98 | 1532 | { |
190154cf | 1533 | HttpRequest *r = http->request; |
62e76326 | 1534 | |
e6ccf245 | 1535 | if (r->flags.cachable || r->flags.internal) { |
62e76326 | 1536 | lookingforstore = 5; |
1537 | StoreEntry::getPublicByRequest (this, r); | |
559da936 | 1538 | } else { |
62e76326 | 1539 | identifyFoundObject (NullStoreEntry::getInstance()); |
559da936 | 1540 | } |
e6ccf245 | 1541 | } |
1542 | ||
7d5f62a4 AJ |
1543 | /** |
1544 | * Check state of the current StoreEntry object. | |
1545 | * to see if we can determine the final status of the request. | |
1546 | */ | |
e6ccf245 | 1547 | void |
1548 | clientReplyContext::identifyFoundObject(StoreEntry *newEntry) | |
1549 | { | |
1550 | StoreEntry *e = newEntry; | |
190154cf | 1551 | HttpRequest *r = http->request; |
62e76326 | 1552 | |
d85b8894 | 1553 | /** \li If the entry received isNull() then we ignore it. */ |
e6ccf245 | 1554 | if (e->isNull()) { |
86a2f789 | 1555 | http->storeEntry(NULL); |
e6ccf245 | 1556 | } else { |
86a2f789 | 1557 | http->storeEntry(e); |
e6ccf245 | 1558 | } |
62e76326 | 1559 | |
86a2f789 | 1560 | e = http->storeEntry(); |
a12a049a | 1561 | |
7d5f62a4 | 1562 | /* Release IP-cache entries on reload */ |
d85b8894 | 1563 | /** \li If the request has no-cache flag set or some no_cache HACK in operation we |
7d5f62a4 AJ |
1564 | * 'invalidate' the cached IP entries for this request ??? |
1565 | */ | |
a12a049a | 1566 | if (r->flags.nocache) { |
1567 | ||
1568 | #if USE_DNSSERVERS | |
62e76326 | 1569 | |
cc192b50 | 1570 | ipcacheInvalidate(r->GetHost()); |
62e76326 | 1571 | |
a12a049a | 1572 | #else |
1573 | ||
cc192b50 | 1574 | ipcacheInvalidateNegative(r->GetHost()); |
a12a049a | 1575 | |
1576 | #endif /* USE_DNSSERVERS */ | |
1577 | ||
1578 | } | |
1579 | ||
626096be | 1580 | #if USE_HTTP_VIOLATIONS |
62e76326 | 1581 | |
a12a049a | 1582 | else if (r->flags.nocache_hack) { |
1583 | ||
1584 | #if USE_DNSSERVERS | |
1585 | ||
cc192b50 | 1586 | ipcacheInvalidate(r->GetHost()); |
62e76326 | 1587 | |
a12a049a | 1588 | #else |
1589 | ||
cc192b50 | 1590 | ipcacheInvalidateNegative(r->GetHost()); |
a12a049a | 1591 | |
1592 | #endif /* USE_DNSSERVERS */ | |
1593 | ||
1594 | } | |
1595 | ||
626096be | 1596 | #endif /* USE_HTTP_VIOLATIONS */ |
edce4d98 | 1597 | #if USE_CACHE_DIGESTS |
62e76326 | 1598 | |
86a2f789 | 1599 | lookup_type = http->storeEntry() ? "HIT" : "MISS"; |
62e76326 | 1600 | |
edce4d98 | 1601 | #endif |
62e76326 | 1602 | |
86a2f789 | 1603 | if (NULL == http->storeEntry()) { |
d85b8894 | 1604 | /** \li If no StoreEntry object is current assume this object isn't in the cache set MISS*/ |
7d5f62a4 | 1605 | debugs(85, 3, "clientProcessRequest2: StoreEntry is NULL - MISS"); |
62e76326 | 1606 | http->logType = LOG_TCP_MISS; |
1607 | doGetMoreData(); | |
1608 | return; | |
edce4d98 | 1609 | } |
62e76326 | 1610 | |
edce4d98 | 1611 | if (Config.onoff.offline) { |
d85b8894 | 1612 | /** \li If we are running in offline mode set to HIT */ |
bf8fe701 | 1613 | debugs(85, 3, "clientProcessRequest2: offline HIT"); |
62e76326 | 1614 | http->logType = LOG_TCP_HIT; |
1615 | doGetMoreData(); | |
1616 | return; | |
edce4d98 | 1617 | } |
62e76326 | 1618 | |
edce4d98 | 1619 | if (http->redirect.status) { |
d85b8894 | 1620 | /** \li If redirection status is True force this to be a MISS */ |
7d5f62a4 | 1621 | debugs(85, 3, "clientProcessRequest2: redirectStatus forced StoreEntry to NULL - MISS"); |
86a2f789 | 1622 | http->storeEntry(NULL); |
62e76326 | 1623 | http->logType = LOG_TCP_MISS; |
1624 | doGetMoreData(); | |
1625 | return; | |
edce4d98 | 1626 | } |
62e76326 | 1627 | |
3900307b | 1628 | if (!e->validToSend()) { |
bf8fe701 | 1629 | debugs(85, 3, "clientProcessRequest2: !storeEntryValidToSend MISS" ); |
86a2f789 | 1630 | http->storeEntry(NULL); |
62e76326 | 1631 | http->logType = LOG_TCP_MISS; |
1632 | doGetMoreData(); | |
1633 | return; | |
edce4d98 | 1634 | } |
62e76326 | 1635 | |
edce4d98 | 1636 | if (EBIT_TEST(e->flags, ENTRY_SPECIAL)) { |
d85b8894 | 1637 | /* \li Special entries are always hits, no matter what the client says */ |
bf8fe701 | 1638 | debugs(85, 3, "clientProcessRequest2: ENTRY_SPECIAL HIT"); |
62e76326 | 1639 | http->logType = LOG_TCP_HIT; |
1640 | doGetMoreData(); | |
1641 | return; | |
edce4d98 | 1642 | } |
62e76326 | 1643 | |
edce4d98 | 1644 | if (r->flags.nocache) { |
bf8fe701 | 1645 | debugs(85, 3, "clientProcessRequest2: no-cache REFRESH MISS"); |
86a2f789 | 1646 | http->storeEntry(NULL); |
62e76326 | 1647 | http->logType = LOG_TCP_CLIENT_REFRESH_MISS; |
1648 | doGetMoreData(); | |
1649 | return; | |
edce4d98 | 1650 | } |
62e76326 | 1651 | |
bf8fe701 | 1652 | debugs(85, 3, "clientProcessRequest2: default HIT"); |
e6ccf245 | 1653 | http->logType = LOG_TCP_HIT; |
1654 | doGetMoreData(); | |
edce4d98 | 1655 | } |
1656 | ||
d85b8894 AJ |
1657 | /** |
1658 | * Request more data from the store for the client Stream | |
edce4d98 | 1659 | * This is *the* entry point to this module. |
1660 | * | |
1661 | * Preconditions: | |
d85b8894 AJ |
1662 | * - This is the head of the list. |
1663 | * - There is at least one more node. | |
1664 | * - Data context is not null | |
edce4d98 | 1665 | */ |
1666 | void | |
59a1efb2 | 1667 | clientGetMoreData(clientStreamNode * aNode, ClientHttpRequest * http) |
edce4d98 | 1668 | { |
edce4d98 | 1669 | /* Test preconditions */ |
e6ccf245 | 1670 | assert(aNode != NULL); |
1671 | assert(cbdataReferenceValid(aNode)); | |
e6ccf245 | 1672 | assert(aNode->node.prev == NULL); |
1673 | assert(aNode->node.next != NULL); | |
0655fa4d | 1674 | clientReplyContext *context = dynamic_cast<clientReplyContext *>(aNode->data.getRaw()); |
1675 | assert (context); | |
edce4d98 | 1676 | assert(context->http == http); |
1677 | ||
559da936 | 1678 | |
0655fa4d | 1679 | clientStreamNode *next = ( clientStreamNode *)aNode->node.next->data; |
62e76326 | 1680 | |
edce4d98 | 1681 | if (!context->ourNode) |
62e76326 | 1682 | context->ourNode = aNode; |
1683 | ||
e6ccf245 | 1684 | /* no cbdatareference, this is only used once, and safely */ |
edce4d98 | 1685 | if (context->flags.storelogiccomplete) { |
62e76326 | 1686 | StoreIOBuffer tempBuffer; |
1687 | tempBuffer.offset = next->readBuffer.offset + context->headers_sz; | |
1688 | tempBuffer.length = next->readBuffer.length; | |
1689 | tempBuffer.data = next->readBuffer.data; | |
1690 | ||
86a2f789 | 1691 | storeClientCopy(context->sc, http->storeEntry(), |
0655fa4d | 1692 | tempBuffer, clientReplyContext::SendMoreData, context); |
62e76326 | 1693 | return; |
edce4d98 | 1694 | } |
62e76326 | 1695 | |
edce4d98 | 1696 | if (context->http->request->method == METHOD_PURGE) { |
62e76326 | 1697 | context->purgeRequest(); |
1698 | return; | |
edce4d98 | 1699 | } |
62e76326 | 1700 | |
e18b8316 | 1701 | // OPTIONS with Max-Forwards:0 handled in clientProcessRequest() |
fc90edc3 | 1702 | |
edce4d98 | 1703 | if (context->http->request->method == METHOD_TRACE) { |
34ee6e73 | 1704 | if (context->http->request->header.getInt64(HDR_MAX_FORWARDS) == 0) { |
0655fa4d | 1705 | context->traceReply(aNode); |
62e76326 | 1706 | return; |
1707 | } | |
1708 | ||
1709 | /* continue forwarding, not finished yet. */ | |
1710 | http->logType = LOG_TCP_MISS; | |
1711 | ||
1712 | context->doGetMoreData(); | |
edce4d98 | 1713 | } else |
62e76326 | 1714 | context->identifyStoreObject(); |
e6ccf245 | 1715 | } |
1716 | ||
1717 | void | |
1718 | clientReplyContext::doGetMoreData() | |
1719 | { | |
edce4d98 | 1720 | /* We still have to do store logic processing - vary, cache hit etc */ |
86a2f789 | 1721 | if (http->storeEntry() != NULL) { |
62e76326 | 1722 | /* someone found the object in the cache for us */ |
8bcf08e0 | 1723 | StoreIOBuffer localTempBuffer; |
34266cde | 1724 | |
3d0ac046 | 1725 | http->storeEntry()->lock(); |
62e76326 | 1726 | |
86a2f789 | 1727 | if (http->storeEntry()->mem_obj == NULL) { |
62e76326 | 1728 | /* |
1729 | * This if-block exists because we don't want to clobber | |
1730 | * a preexiting mem_obj->method value if the mem_obj | |
1731 | * already exists. For example, when a HEAD request | |
1732 | * is a cache hit for a GET response, we want to keep | |
1733 | * the method as GET. | |
1734 | */ | |
3900307b | 1735 | http->storeEntry()->createMemObject(http->uri, http->log_uri); |
7d5f62a4 | 1736 | http->storeEntry()->mem_obj->method = http->request->method; |
62e76326 | 1737 | } |
1738 | ||
86a2f789 | 1739 | sc = storeClientListAdd(http->storeEntry(), this); |
9a0a18de | 1740 | #if USE_DELAY_POOLS |
62e76326 | 1741 | sc->setDelayId(DelayId::DelayClient(http)); |
edce4d98 | 1742 | #endif |
62e76326 | 1743 | |
1744 | assert(http->logType == LOG_TCP_HIT); | |
1745 | reqofs = 0; | |
1746 | /* guarantee nothing has been sent yet! */ | |
1747 | assert(http->out.size == 0); | |
1748 | assert(http->out.offset == 0); | |
425de4c8 AJ |
1749 | |
1750 | if (Ip::Qos::TheConfig.isHitTosActive()) { | |
73c36fd9 | 1751 | Ip::Qos::doTosLocalHit(http->getConn()->clientConnection); |
425de4c8 AJ |
1752 | } |
1753 | ||
1754 | if (Ip::Qos::TheConfig.isHitNfmarkActive()) { | |
73c36fd9 | 1755 | Ip::Qos::doNfmarkLocalHit(http->getConn()->clientConnection); |
b86ab75b | 1756 | } |
425de4c8 | 1757 | |
8bcf08e0 FC |
1758 | localTempBuffer.offset = reqofs; |
1759 | localTempBuffer.length = getNextNode()->readBuffer.length; | |
1760 | localTempBuffer.data = getNextNode()->readBuffer.data; | |
1761 | storeClientCopy(sc, http->storeEntry(), localTempBuffer, CacheHit, this); | |
edce4d98 | 1762 | } else { |
62e76326 | 1763 | /* MISS CASE, http->logType is already set! */ |
0655fa4d | 1764 | processMiss(); |
edce4d98 | 1765 | } |
1766 | } | |
1767 | ||
d85b8894 | 1768 | /** The next node has removed itself from the stream. */ |
edce4d98 | 1769 | void |
59a1efb2 | 1770 | clientReplyDetach(clientStreamNode * node, ClientHttpRequest * http) |
edce4d98 | 1771 | { |
d85b8894 | 1772 | /** detach from the stream */ |
edce4d98 | 1773 | clientStreamDetach(node, http); |
1774 | } | |
1775 | ||
d85b8894 AJ |
1776 | /** |
1777 | * Accepts chunk of a http message in buf, parses prefix, filters headers and | |
edce4d98 | 1778 | * such, writes processed message to the message recipient |
1779 | */ | |
1780 | void | |
0655fa4d | 1781 | clientReplyContext::SendMoreData(void *data, StoreIOBuffer result) |
edce4d98 | 1782 | { |
e6ccf245 | 1783 | clientReplyContext *context = static_cast<clientReplyContext *>(data); |
528b2c61 | 1784 | context->sendMoreData (result); |
1785 | } | |
1786 | ||
1787 | void | |
1788 | clientReplyContext::makeThisHead() | |
1789 | { | |
1790 | /* At least, I think thats what this does */ | |
1791 | dlinkDelete(&http->active, &ClientActiveRequests); | |
1792 | dlinkAdd(http, &http->active, &ClientActiveRequests); | |
1793 | } | |
1794 | ||
1795 | bool | |
1796 | clientReplyContext::errorInStream(StoreIOBuffer const &result, size_t const &sizeToProcess)const | |
1797 | { | |
1798 | return /* aborted request */ | |
86a2f789 | 1799 | (http->storeEntry() && EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) || |
62e76326 | 1800 | /* Upstream read error */ (result.flags.error) || |
1801 | /* Upstream EOF */ (sizeToProcess == 0); | |
528b2c61 | 1802 | } |
1803 | ||
1804 | void | |
1805 | clientReplyContext::sendStreamError(StoreIOBuffer const &result) | |
1806 | { | |
d85b8894 | 1807 | /** call clientWriteComplete so the client socket gets closed |
af6a12ee | 1808 | * |
d85b8894 | 1809 | * We call into the stream, because we don't know that there is a |
528b2c61 | 1810 | * client socket! |
1811 | */ | |
26ac0430 | 1812 | debugs(88, 5, "clientReplyContext::sendStreamError: A stream error has occured, marking as complete and sending no data."); |
8bcf08e0 | 1813 | StoreIOBuffer localTempBuffer; |
528b2c61 | 1814 | flags.complete = 1; |
4ad60609 | 1815 | http->request->flags.stream_error = 1; |
8bcf08e0 | 1816 | localTempBuffer.flags.error = result.flags.error; |
528b2c61 | 1817 | clientStreamCallback((clientStreamNode*)http->client_stream.head->data, http, NULL, |
8bcf08e0 | 1818 | localTempBuffer); |
528b2c61 | 1819 | } |
1820 | ||
1821 | void | |
1822 | clientReplyContext::pushStreamData(StoreIOBuffer const &result, char *source) | |
1823 | { | |
8bcf08e0 | 1824 | StoreIOBuffer localTempBuffer; |
62e76326 | 1825 | |
528b2c61 | 1826 | if (result.length == 0) { |
bf8fe701 | 1827 | debugs(88, 5, "clientReplyContext::pushStreamData: marking request as complete due to 0 length store result"); |
62e76326 | 1828 | flags.complete = 1; |
528b2c61 | 1829 | } |
62e76326 | 1830 | |
43ae1d95 | 1831 | assert(result.offset - headers_sz == next()->readBuffer.offset); |
8bcf08e0 FC |
1832 | localTempBuffer.offset = result.offset - headers_sz; |
1833 | localTempBuffer.length = result.length; | |
62e76326 | 1834 | |
8bcf08e0 FC |
1835 | if (localTempBuffer.length) |
1836 | localTempBuffer.data = source; | |
62e76326 | 1837 | |
528b2c61 | 1838 | clientStreamCallback((clientStreamNode*)http->client_stream.head->data, http, NULL, |
8bcf08e0 | 1839 | localTempBuffer); |
528b2c61 | 1840 | } |
1841 | ||
1842 | clientStreamNode * | |
1843 | clientReplyContext::next() const | |
1844 | { | |
1845 | assert ( (clientStreamNode*)http->client_stream.head->next->data == getNextNode()); | |
1846 | return getNextNode(); | |
1847 | } | |
1848 | ||
b51aec66 | 1849 | void |
16611143 | 1850 | clientReplyContext::sendBodyTooLargeError() |
b51aec66 | 1851 | { |
b7ac5457 | 1852 | Ip::Address tmp_noaddr; |
26ac0430 | 1853 | tmp_noaddr.SetNoAddr(); // TODO: make a global const |
af0d9bca | 1854 | http->logType = LOG_TCP_DENIED_REPLY; |
16611143 | 1855 | ErrorState *err = clientBuildError(ERR_TOO_BIG, HTTP_FORBIDDEN, NULL, |
73c36fd9 | 1856 | http->getConn() != NULL ? http->getConn()->clientConnection->remote : tmp_noaddr, |
26ac0430 | 1857 | http->request); |
16611143 | 1858 | removeClientStoreReference(&(sc), http); |
1859 | HTTPMSGUNLOCK(reply); | |
1860 | startError(err); | |
26ac0430 | 1861 | |
b51aec66 | 1862 | } |
1863 | ||
79c8035e AR |
1864 | /// send 412 (Precondition Failed) to client |
1865 | void | |
1866 | clientReplyContext::sendPreconditionFailedError() | |
1867 | { | |
1868 | http->logType = LOG_TCP_HIT; | |
1869 | ErrorState *const err = | |
1870 | clientBuildError(ERR_PRECONDITION_FAILED, HTTP_PRECONDITION_FAILED, | |
73c36fd9 | 1871 | NULL, http->getConn()->clientConnection->remote, http->request); |
79c8035e AR |
1872 | removeClientStoreReference(&sc, http); |
1873 | HTTPMSGUNLOCK(reply); | |
1874 | startError(err); | |
1875 | } | |
1876 | ||
a2bd457d AJ |
1877 | /// send 304 (Not Modified) to client |
1878 | void | |
1879 | clientReplyContext::sendNotModified() | |
1880 | { | |
1881 | StoreEntry *e = http->storeEntry(); | |
1882 | const time_t timestamp = e->timestamp; | |
1883 | HttpReply *const temprep = e->getReply()->make304(); | |
1884 | http->logType = LOG_TCP_IMS_HIT; | |
1885 | removeClientStoreReference(&sc, http); | |
1886 | createStoreEntry(http->request->method, request_flags()); | |
1887 | e = http->storeEntry(); | |
1888 | // Copy timestamp from the original entry so the 304 | |
1889 | // reply has a meaningful Age: header. | |
90fa5816 | 1890 | e->timestampsSet(); |
a2bd457d AJ |
1891 | e->timestamp = timestamp; |
1892 | e->replaceHttpReply(temprep); | |
1893 | e->complete(); | |
1894 | /* | |
1895 | * TODO: why put this in the store and then serialise it and | |
1896 | * then parse it again. Simply mark the request complete in | |
1897 | * our context and write the reply struct to the client side. | |
1898 | */ | |
1899 | triggerInitialStoreRead(); | |
1900 | } | |
1901 | ||
1902 | /// send 304 (Not Modified) or 412 (Precondition Failed) to client | |
1903 | /// depending on request method | |
1904 | void | |
1905 | clientReplyContext::sendNotModifiedOrPreconditionFailedError() | |
1906 | { | |
1907 | if (http->request->method == METHOD_GET || | |
a4be71b2 | 1908 | http->request->method == METHOD_HEAD) |
a2bd457d AJ |
1909 | sendNotModified(); |
1910 | else | |
1911 | sendPreconditionFailedError(); | |
1912 | } | |
1913 | ||
4993f571 | 1914 | void |
1915 | clientReplyContext::processReplyAccess () | |
1916 | { | |
b50e327b | 1917 | /* NP: this should probably soft-fail to a zero-sized-reply error ?? */ |
7dc5f514 | 1918 | assert(reply); |
b50e327b AJ |
1919 | |
1920 | /** Don't block our own responses or HTTP status messages */ | |
16611143 | 1921 | if (http->logType == LOG_TCP_DENIED || |
26ac0430 AJ |
1922 | http->logType == LOG_TCP_DENIED_REPLY || |
1923 | alwaysAllowResponse(reply->sline.status)) { | |
acbf9428 | 1924 | headers_sz = reply->hdr_sz; |
2efeb0b7 | 1925 | processReplyAccessResult(ACCESS_ALLOWED); |
26ac0430 | 1926 | return; |
230a8cc6 | 1927 | } |
26ac0430 | 1928 | |
b50e327b | 1929 | /** Check for reply to big error */ |
16611143 | 1930 | if (reply->expectedBodyTooLarge(*http->request)) { |
1931 | sendBodyTooLargeError(); | |
62e76326 | 1932 | return; |
1933 | } | |
1934 | ||
7dc5f514 | 1935 | headers_sz = reply->hdr_sz; |
230a8cc6 | 1936 | |
b50e327b | 1937 | /** check for absent access controls (permit by default) */ |
230a8cc6 | 1938 | if (!Config.accessList.reply) { |
2efeb0b7 | 1939 | processReplyAccessResult(ACCESS_ALLOWED); |
26ac0430 | 1940 | return; |
230a8cc6 | 1941 | } |
1942 | ||
b50e327b | 1943 | /** Process http_reply_access lists */ |
127dce76 AR |
1944 | ACLFilledChecklist *replyChecklist = |
1945 | clientAclChecklistCreate(Config.accessList.reply, http); | |
7dc5f514 | 1946 | replyChecklist->reply = HTTPMSGLOCK(reply); |
0655fa4d | 1947 | replyChecklist->nonBlockingCheck(ProcessReplyAccessResult, this); |
4993f571 | 1948 | } |
1949 | ||
1950 | void | |
2efeb0b7 | 1951 | clientReplyContext::ProcessReplyAccessResult(allow_t rv, void *voidMe) |
4993f571 | 1952 | { |
1953 | clientReplyContext *me = static_cast<clientReplyContext *>(voidMe); | |
0655fa4d | 1954 | me->processReplyAccessResult(rv); |
4993f571 | 1955 | } |
1956 | ||
1957 | void | |
2efeb0b7 | 1958 | clientReplyContext::processReplyAccessResult(const allow_t &accessAllowed) |
4993f571 | 1959 | { |
26ac0430 | 1960 | debugs(88, 2, "The reply for " << RequestMethodStr(http->request->method) |
2efeb0b7 | 1961 | << " " << http->uri << " is " << accessAllowed << ", because it matched '" |
bf8fe701 | 1962 | << (AclMatchedName ? AclMatchedName : "NO ACL's") << "'" ); |
62e76326 | 1963 | |
2efeb0b7 | 1964 | if (accessAllowed != ACCESS_ALLOWED) { |
62e76326 | 1965 | ErrorState *err; |
0185bd6f | 1966 | err_type page_id; |
9ce7856a | 1967 | page_id = aclGetDenyInfoPage(&Config.denyInfoList, AclMatchedName, 1); |
0185bd6f | 1968 | |
c466369c | 1969 | http->logType = LOG_TCP_DENIED_REPLY; |
1970 | ||
0185bd6f | 1971 | if (page_id == ERR_NONE) |
1972 | page_id = ERR_ACCESS_DENIED; | |
1973 | ||
b7ac5457 | 1974 | Ip::Address tmp_noaddr; |
26ac0430 | 1975 | tmp_noaddr.SetNoAddr(); |
cc192b50 | 1976 | err = clientBuildError(page_id, HTTP_FORBIDDEN, NULL, |
73c36fd9 | 1977 | http->getConn() != NULL ? http->getConn()->clientConnection->remote : tmp_noaddr, |
26ac0430 | 1978 | http->request); |
0185bd6f | 1979 | |
86a2f789 | 1980 | removeClientStoreReference(&sc, http); |
0185bd6f | 1981 | |
7dc5f514 | 1982 | HTTPMSGUNLOCK(reply); |
0185bd6f | 1983 | |
3c2c1d31 | 1984 | startError(err); |
1985 | ||
0185bd6f | 1986 | |
62e76326 | 1987 | return; |
1988 | } | |
1989 | ||
0976f8db | 1990 | /* Ok, the reply is allowed, */ |
1991 | http->loggingEntry(http->storeEntry()); | |
1992 | ||
7dc5f514 | 1993 | ssize_t body_size = reqofs - reply->hdr_sz; |
b297bcd0 | 1994 | if (body_size < 0) { |
26ac0430 AJ |
1995 | reqofs = reply->hdr_sz; |
1996 | body_size = 0; | |
b297bcd0 | 1997 | } |
0976f8db | 1998 | |
bf8fe701 | 1999 | debugs(88, 3, "clientReplyContext::sendMoreData: Appending " << |
2000 | (int) body_size << " bytes after " << reply->hdr_sz << | |
2001 | " bytes of headers"); | |
0976f8db | 2002 | |
f41735ea | 2003 | #if USE_SQUID_ESI |
62e76326 | 2004 | |
7dc5f514 | 2005 | if (http->flags.accel && reply->sline.status != HTTP_FORBIDDEN && |
2006 | !alwaysAllowResponse(reply->sline.status) && | |
2007 | esiEnableProcessing(reply)) { | |
bf8fe701 | 2008 | debugs(88, 2, "Enabling ESI processing for " << http->uri); |
43ae1d95 | 2009 | clientStreamInsertHead(&http->client_stream, esiStreamRead, |
2010 | esiProcessStream, esiStreamDetach, esiStreamStatus, NULL); | |
2011 | } | |
2012 | ||
5ef38a13 | 2013 | #endif |
2014 | ||
62e76326 | 2015 | if (http->request->method == METHOD_HEAD) { |
2016 | /* do not forward body for HEAD replies */ | |
2017 | body_size = 0; | |
2018 | http->flags.done_copying = 1; | |
2019 | flags.complete = 1; | |
2020 | } | |
2021 | ||
2022 | assert (!flags.headersSent); | |
2023 | flags.headersSent = true; | |
2024 | ||
8bcf08e0 | 2025 | StoreIOBuffer localTempBuffer; |
62e76326 | 2026 | char *buf = next()->readBuffer.data; |
e85eb4e1 | 2027 | char *body_buf = buf + reply->hdr_sz; |
62e76326 | 2028 | |
49ea0125 | 2029 | //Server side may disable ranges under some circumstances. |
2030 | ||
2031 | if ((!http->request->range)) | |
2032 | next()->readBuffer.offset = 0; | |
2033 | ||
e85eb4e1 AJ |
2034 | body_buf -= next()->readBuffer.offset; |
2035 | ||
62e76326 | 2036 | if (next()->readBuffer.offset != 0) { |
2037 | if (next()->readBuffer.offset > body_size) { | |
2324cda2 | 2038 | /* Can't use any of the body we received. send nothing */ |
8bcf08e0 FC |
2039 | localTempBuffer.length = 0; |
2040 | localTempBuffer.data = NULL; | |
62e76326 | 2041 | } else { |
8bcf08e0 FC |
2042 | localTempBuffer.length = body_size - next()->readBuffer.offset; |
2043 | localTempBuffer.data = body_buf + next()->readBuffer.offset; | |
62e76326 | 2044 | } |
2045 | } else { | |
8bcf08e0 FC |
2046 | localTempBuffer.length = body_size; |
2047 | localTempBuffer.data = body_buf; | |
62e76326 | 2048 | } |
2049 | ||
0655fa4d | 2050 | /* TODO??: move the data in the buffer back by the request header size */ |
62e76326 | 2051 | clientStreamCallback((clientStreamNode *)http->client_stream.head->data, |
8bcf08e0 | 2052 | http, reply, localTempBuffer); |
62e76326 | 2053 | |
2054 | return; | |
4993f571 | 2055 | } |
2056 | ||
528b2c61 | 2057 | void |
2058 | clientReplyContext::sendMoreData (StoreIOBuffer result) | |
2059 | { | |
50c09fc4 | 2060 | if (deleting) |
2061 | return; | |
2062 | ||
86a2f789 | 2063 | StoreEntry *entry = http->storeEntry(); |
50c09fc4 | 2064 | |
1cf238db | 2065 | ConnStateData * conn = http->getConn(); |
50c09fc4 | 2066 | |
137ac48a | 2067 | if (conn == NULL || !conn->isOpen()) { |
5c336a3b AJ |
2068 | // too late, our conn is closing |
2069 | // TODO: should we also quit? | |
73c36fd9 | 2070 | debugs(33,3, HERE << "not sending more data to a closing " << conn->clientConnection); |
9af2f95b AR |
2071 | return; |
2072 | } | |
50c09fc4 | 2073 | |
528b2c61 | 2074 | char *buf = next()->readBuffer.data; |
50c09fc4 | 2075 | |
da33c835 | 2076 | if (buf != result.data) { |
62e76326 | 2077 | /* we've got to copy some data */ |
2078 | assert(result.length <= next()->readBuffer.length); | |
41d00cd3 | 2079 | memcpy(buf, result.data, result.length); |
edce4d98 | 2080 | } |
62e76326 | 2081 | |
73c36fd9 | 2082 | if (reqofs==0 && !logTypeIsATcpHit(http->logType) && Comm::IsConnOpen(conn->clientConnection)) { |
425de4c8 | 2083 | if (Ip::Qos::TheConfig.isHitTosActive()) { |
73c36fd9 | 2084 | Ip::Qos::doTosLocalMiss(conn->clientConnection, http->request->hier.code); |
425de4c8 AJ |
2085 | } |
2086 | if (Ip::Qos::TheConfig.isHitNfmarkActive()) { | |
73c36fd9 | 2087 | Ip::Qos::doNfmarkLocalMiss(conn->clientConnection, http->request->hier.code); |
452bb8e2 | 2088 | } |
7172612f | 2089 | } |
7172612f | 2090 | |
ab9c533b HN |
2091 | /* We've got the final data to start pushing... */ |
2092 | flags.storelogiccomplete = 1; | |
2093 | ||
4993f571 | 2094 | reqofs += result.length; |
2095 | ||
2096 | assert(reqofs <= HTTP_REQBUF_SZ || flags.headersSent); | |
62e76326 | 2097 | |
edce4d98 | 2098 | assert(http->request != NULL); |
62e76326 | 2099 | |
edce4d98 | 2100 | /* ESI TODO: remove this assert once everything is stable */ |
2101 | assert(http->client_stream.head->data | |
62e76326 | 2102 | && cbdataReferenceValid(http->client_stream.head->data)); |
528b2c61 | 2103 | |
2104 | makeThisHead(); | |
62e76326 | 2105 | |
bf8fe701 | 2106 | debugs(88, 5, "clientReplyContext::sendMoreData: " << http->uri << ", " << |
47f6e231 | 2107 | reqofs << " bytes (" << result.length << |
bf8fe701 | 2108 | " new bytes)"); |
47f6e231 | 2109 | debugs(88, 5, "clientReplyContext::sendMoreData:" |
73c36fd9 | 2110 | << conn->clientConnection << |
26ac0430 AJ |
2111 | " '" << entry->url() << "'" << |
2112 | " out.offset=" << http->out.offset); | |
528b2c61 | 2113 | |
edce4d98 | 2114 | /* update size of the request */ |
4993f571 | 2115 | reqsize = reqofs; |
62e76326 | 2116 | |
4993f571 | 2117 | if (errorInStream(result, reqofs)) { |
62e76326 | 2118 | sendStreamError(result); |
2119 | return; | |
edce4d98 | 2120 | } |
528b2c61 | 2121 | |
2122 | if (flags.headersSent) { | |
62e76326 | 2123 | pushStreamData (result, buf); |
2124 | return; | |
edce4d98 | 2125 | } |
62e76326 | 2126 | |
b297bcd0 | 2127 | cloneReply(); |
21b92762 | 2128 | |
b297bcd0 | 2129 | /* handle headers */ |
21b92762 | 2130 | |
b297bcd0 | 2131 | if (Config.onoff.log_mime_hdrs) { |
26ac0430 | 2132 | size_t k; |
43ae1d95 | 2133 | |
26ac0430 AJ |
2134 | if ((k = headersEnd(buf, reqofs))) { |
2135 | safe_free(http->al.headers.reply); | |
2136 | http->al.headers.reply = (char *)xcalloc(k + 1, 1); | |
2137 | xstrncpy(http->al.headers.reply, buf, k); | |
2138 | } | |
edce4d98 | 2139 | } |
b297bcd0 HN |
2140 | |
2141 | holdingBuffer = result; | |
2142 | processReplyAccess(); | |
2143 | return; | |
edce4d98 | 2144 | } |
2145 | ||
62e76326 | 2146 | |
edce4d98 | 2147 | |
2148 | /* Using this breaks the client layering just a little! | |
2149 | */ | |
0655fa4d | 2150 | void |
8bcf08e0 | 2151 | clientReplyContext::createStoreEntry(const HttpRequestMethod& m, request_flags reqFlags) |
edce4d98 | 2152 | { |
0655fa4d | 2153 | assert(http != NULL); |
edce4d98 | 2154 | /* |
2155 | * For erroneous requests, we might not have a h->request, | |
2156 | * so make a fake one. | |
2157 | */ | |
62e76326 | 2158 | |
0655fa4d | 2159 | if (http->request == NULL) |
0c3d3f65 | 2160 | http->request = HTTPMSGLOCK(new HttpRequest(m, AnyP::PROTO_NONE, null_string)); |
62e76326 | 2161 | |
8bcf08e0 | 2162 | StoreEntry *e = storeCreateEntry(http->uri, http->log_uri, reqFlags, m); |
62e76326 | 2163 | |
0655fa4d | 2164 | sc = storeClientListAdd(e, this); |
62e76326 | 2165 | |
9a0a18de | 2166 | #if USE_DELAY_POOLS |
0655fa4d | 2167 | sc->setDelayId(DelayId::DelayClient(http)); |
edce4d98 | 2168 | #endif |
62e76326 | 2169 | |
0655fa4d | 2170 | reqofs = 0; |
62e76326 | 2171 | |
0655fa4d | 2172 | reqsize = 0; |
62e76326 | 2173 | |
edce4d98 | 2174 | /* I don't think this is actually needed! -- adrian */ |
0655fa4d | 2175 | /* http->reqbuf = http->norm_reqbuf; */ |
2176 | // assert(http->reqbuf == http->norm_reqbuf); | |
edce4d98 | 2177 | /* The next line is illegal because we don't know if the client stream |
26ac0430 | 2178 | * buffers have been set up |
edce4d98 | 2179 | */ |
0655fa4d | 2180 | // storeClientCopy(http->sc, e, 0, HTTP_REQBUF_SZ, http->reqbuf, |
2181 | // SendMoreData, this); | |
edce4d98 | 2182 | /* So, we mark the store logic as complete */ |
8bcf08e0 | 2183 | flags.storelogiccomplete = 1; |
62e76326 | 2184 | |
edce4d98 | 2185 | /* and get the caller to request a read, from whereever they are */ |
62e76326 | 2186 | /* NOTE: after ANY data flows down the pipe, even one step, |
26ac0430 | 2187 | * this function CAN NOT be used to manage errors |
edce4d98 | 2188 | */ |
86a2f789 | 2189 | http->storeEntry(e); |
edce4d98 | 2190 | } |
2191 | ||
2192 | ErrorState * | |
2193 | clientBuildError(err_type page_id, http_status status, char const *url, | |
b7ac5457 | 2194 | Ip::Address &src_addr, HttpRequest * request) |
edce4d98 | 2195 | { |
2cc81f1f | 2196 | ErrorState *err = errorCon(page_id, status, request); |
cc192b50 | 2197 | err->src_addr = src_addr; |
62e76326 | 2198 | |
edce4d98 | 2199 | if (url) |
62e76326 | 2200 | err->url = xstrdup(url); |
2201 | ||
edce4d98 | 2202 | return err; |
2203 | } |