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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" | |
43 | #include "auth/UserRequest.h" | |
44 | #include "client_side.h" | |
0655fa4d | 45 | #include "client_side_reply.h" |
c8be6d7b | 46 | #include "clientStream.h" |
b7ac5457 AJ |
47 | #if DELAY_POOLS |
48 | #include "DelayPools.h" | |
49 | #endif | |
50 | #include "errorpage.h" | |
f41735ea | 51 | #if USE_SQUID_ESI |
f99c2cfe | 52 | #include "esi/Esi.h" |
43ae1d95 | 53 | #endif |
7172612f | 54 | #include "fde.h" |
b7ac5457 AJ |
55 | #include "forward.h" |
56 | #include "HttpReply.h" | |
57 | #include "HttpRequest.h" | |
58 | #include "ip/QosConfig.h" | |
59 | #include "MemObject.h" | |
985c86bc | 60 | #include "SquidTime.h" |
b7ac5457 AJ |
61 | #include "StoreClient.h" |
62 | #include "Store.h" | |
e6ccf245 | 63 | |
0655fa4d | 64 | CBDATA_CLASS_INIT(clientReplyContext); |
edce4d98 | 65 | |
edce4d98 | 66 | /* Local functions */ |
e6ccf245 | 67 | extern "C" CSS clientReplyStatus; |
b7ac5457 | 68 | extern ErrorState *clientBuildError(err_type, http_status, char const *, Ip::Address &, HttpRequest *); |
edce4d98 | 69 | |
edce4d98 | 70 | /* privates */ |
edce4d98 | 71 | |
0655fa4d | 72 | clientReplyContext::~clientReplyContext() |
edce4d98 | 73 | { |
50c09fc4 | 74 | deleting = true; |
75 | /* This may trigger a callback back into SendMoreData as the cbdata | |
76 | * is still valid | |
77 | */ | |
86a2f789 | 78 | removeClientStoreReference(&sc, http); |
edce4d98 | 79 | /* old_entry might still be set if we didn't yet get the reply |
0655fa4d | 80 | * code in HandleIMSReply() */ |
81 | removeStoreReference(&old_sc, &old_entry); | |
82 | safe_free(tempBuffer.data); | |
83 | cbdataReferenceDone(http); | |
2b7d324b | 84 | HTTPMSGUNLOCK(reply); |
edce4d98 | 85 | } |
86 | ||
59a1efb2 | 87 | clientReplyContext::clientReplyContext(ClientHttpRequest *clientContext) : http (cbdataReference(clientContext)), old_entry (NULL), old_sc(NULL), deleting(false) |
0655fa4d | 88 | {} |
edce4d98 | 89 | |
a5c8d64d AJ |
90 | /** Create an error in the store awaiting the client side to read it. |
91 | * | |
92 | * This may be better placed in the clientStream logic, but it has not been | |
0655fa4d | 93 | * relocated there yet |
94 | */ | |
edce4d98 | 95 | void |
0655fa4d | 96 | clientReplyContext::setReplyToError( |
60745f24 | 97 | err_type err, http_status status, const HttpRequestMethod& method, char const *uri, |
b7ac5457 | 98 | Ip::Address &addr, HttpRequest * failedrequest, const char *unparsedrequest, |
a33a428a | 99 | AuthUserRequest::Pointer auth_user_request) |
edce4d98 | 100 | { |
a33a428a | 101 | ErrorState *errstate = clientBuildError(err, status, uri, addr, failedrequest); |
62e76326 | 102 | |
edce4d98 | 103 | if (unparsedrequest) |
62e76326 | 104 | errstate->request_hdrs = xstrdup(unparsedrequest); |
edce4d98 | 105 | |
0655fa4d | 106 | if (status == HTTP_NOT_IMPLEMENTED && http->request) |
62e76326 | 107 | /* prevent confusion over whether we default to persistent or not */ |
0655fa4d | 108 | http->request->flags.proxy_keepalive = 0; |
62e76326 | 109 | |
0655fa4d | 110 | http->al.http.code = errstate->httpStatus; |
edce4d98 | 111 | |
0655fa4d | 112 | createStoreEntry(method, request_flags()); |
62e76326 | 113 | |
a33a428a | 114 | errstate->auth_user_request = auth_user_request; |
62e76326 | 115 | |
edce4d98 | 116 | assert(errstate->callback_data == NULL); |
86a2f789 | 117 | errorAppendEntry(http->storeEntry(), errstate); |
edce4d98 | 118 | /* Now the caller reads to get this */ |
119 | } | |
120 | ||
121 | void | |
0655fa4d | 122 | clientReplyContext::removeStoreReference(store_client ** scp, |
123 | StoreEntry ** ep) | |
edce4d98 | 124 | { |
125 | StoreEntry *e; | |
e4ae841b | 126 | store_client *sc_tmp = *scp; |
62e76326 | 127 | |
edce4d98 | 128 | if ((e = *ep) != NULL) { |
62e76326 | 129 | *ep = NULL; |
e4ae841b | 130 | storeUnregister(sc_tmp, e, this); |
62e76326 | 131 | *scp = NULL; |
97b5e68f | 132 | e->unlock(); |
edce4d98 | 133 | } |
134 | } | |
135 | ||
86a2f789 | 136 | void |
8bcf08e0 | 137 | clientReplyContext::removeClientStoreReference(store_client **scp, ClientHttpRequest *aHttpRequest) |
86a2f789 | 138 | { |
8bcf08e0 | 139 | StoreEntry *reference = aHttpRequest->storeEntry(); |
86a2f789 | 140 | removeStoreReference(scp, &reference); |
8bcf08e0 | 141 | aHttpRequest->storeEntry(reference); |
86a2f789 | 142 | } |
143 | ||
e6ccf245 | 144 | void * |
a695955b | 145 | clientReplyContext::operator new (size_t byteCount) |
e6ccf245 | 146 | { |
147 | /* derived classes with different sizes must implement their own new */ | |
148 | assert (byteCount == sizeof (clientReplyContext)); | |
0655fa4d | 149 | CBDATA_INIT_TYPE(clientReplyContext); |
e6ccf245 | 150 | return cbdataAlloc(clientReplyContext); |
151 | } | |
152 | ||
153 | void | |
154 | clientReplyContext::operator delete (void *address) | |
155 | { | |
a50bfe93 | 156 | clientReplyContext * tmp = (clientReplyContext *)address; |
157 | cbdataFree (tmp); | |
e6ccf245 | 158 | } |
159 | ||
edce4d98 | 160 | void |
0655fa4d | 161 | clientReplyContext::saveState() |
edce4d98 | 162 | { |
e6ccf245 | 163 | assert(old_sc == NULL); |
bf8fe701 | 164 | debugs(88, 3, "clientReplyContext::saveState: saving store context"); |
86a2f789 | 165 | old_entry = http->storeEntry(); |
e6ccf245 | 166 | old_sc = sc; |
167 | old_reqsize = reqsize; | |
168 | tempBuffer.offset = reqofs; | |
edce4d98 | 169 | /* Prevent accessing the now saved entries */ |
86a2f789 | 170 | http->storeEntry(NULL); |
e6ccf245 | 171 | sc = NULL; |
172 | reqsize = 0; | |
173 | reqofs = 0; | |
edce4d98 | 174 | } |
175 | ||
176 | void | |
0655fa4d | 177 | clientReplyContext::restoreState() |
edce4d98 | 178 | { |
e6ccf245 | 179 | assert(old_sc != NULL); |
bf8fe701 | 180 | debugs(88, 3, "clientReplyContext::restoreState: Restoring store context"); |
86a2f789 | 181 | removeClientStoreReference(&sc, http); |
182 | http->storeEntry(old_entry); | |
e6ccf245 | 183 | sc = old_sc; |
184 | reqsize = old_reqsize; | |
185 | reqofs = tempBuffer.offset; | |
edce4d98 | 186 | /* Prevent accessed the old saved entries */ |
0655fa4d | 187 | old_entry = NULL; |
e6ccf245 | 188 | old_sc = NULL; |
189 | old_reqsize = 0; | |
190 | tempBuffer.offset = 0; | |
c8be6d7b | 191 | } |
192 | ||
193 | void | |
0655fa4d | 194 | clientReplyContext::startError(ErrorState * err) |
c8be6d7b | 195 | { |
0655fa4d | 196 | createStoreEntry(http->request->method, request_flags()); |
197 | triggerInitialStoreRead(); | |
86a2f789 | 198 | errorAppendEntry(http->storeEntry(), err); |
edce4d98 | 199 | } |
200 | ||
e6ccf245 | 201 | clientStreamNode * |
528b2c61 | 202 | clientReplyContext::getNextNode() const |
e6ccf245 | 203 | { |
62e76326 | 204 | return (clientStreamNode *)ourNode->node.next->data; |
e6ccf245 | 205 | } |
206 | ||
62e76326 | 207 | /* This function is wrong - the client parameters don't include the |
528b2c61 | 208 | * header offset |
209 | */ | |
c8be6d7b | 210 | void |
0655fa4d | 211 | clientReplyContext::triggerInitialStoreRead() |
c8be6d7b | 212 | { |
0655fa4d | 213 | /* when confident, 0 becomes reqofs, and then this factors into |
26ac0430 | 214 | * startSendProcess |
528b2c61 | 215 | */ |
0655fa4d | 216 | assert(reqofs == 0); |
8bcf08e0 FC |
217 | StoreIOBuffer localTempBuffer (next()->readBuffer.length, 0, next()->readBuffer.data); |
218 | storeClientCopy(sc, http->storeEntry(), localTempBuffer, SendMoreData, this); | |
c8be6d7b | 219 | } |
edce4d98 | 220 | |
221 | /* there is an expired entry in the store. | |
222 | * setup a temporary buffer area and perform an IMS to the origin | |
223 | */ | |
0655fa4d | 224 | void |
225 | clientReplyContext::processExpired() | |
edce4d98 | 226 | { |
edce4d98 | 227 | char *url = http->uri; |
228 | StoreEntry *entry = NULL; | |
bf8fe701 | 229 | debugs(88, 3, "clientReplyContext::processExpired: '" << http->uri << "'"); |
86a2f789 | 230 | assert(http->storeEntry()->lastmod >= 0); |
edce4d98 | 231 | /* |
232 | * check if we are allowed to contact other servers | |
26ac0430 | 233 | * @?@: Instead of a 504 (Gateway Timeout) reply, we may want to return |
edce4d98 | 234 | * a stale entry *if* it matches client requirements |
235 | */ | |
62e76326 | 236 | |
0655fa4d | 237 | if (http->onlyIfCached()) { |
238 | processOnlyIfCachedMiss(); | |
62e76326 | 239 | return; |
edce4d98 | 240 | } |
62e76326 | 241 | |
edce4d98 | 242 | http->request->flags.refresh = 1; |
243 | #if STORE_CLIENT_LIST_DEBUG | |
c8be6d7b | 244 | /* Prevent a race with the store client memory free routines |
edce4d98 | 245 | */ |
0655fa4d | 246 | assert(storeClientIsThisAClient(sc, this)); |
edce4d98 | 247 | #endif |
248 | /* Prepare to make a new temporary request */ | |
0655fa4d | 249 | saveState(); |
edce4d98 | 250 | entry = storeCreateEntry(url, |
62e76326 | 251 | http->log_uri, http->request->flags, http->request->method); |
34266cde | 252 | /* NOTE, don't call StoreEntry->lock(), storeCreateEntry() does it */ |
0655fa4d | 253 | sc = storeClientListAdd(entry, this); |
edce4d98 | 254 | #if DELAY_POOLS |
255 | /* delay_id is already set on original store client */ | |
0655fa4d | 256 | sc->setDelayId(DelayId::DelayClient(http)); |
edce4d98 | 257 | #endif |
62e76326 | 258 | |
0655fa4d | 259 | http->request->lastmod = old_entry->lastmod; |
4a7a3d56 | 260 | debugs(88, 5, "clientReplyContext::processExpired : lastmod " << entry->lastmod ); |
86a2f789 | 261 | http->storeEntry(entry); |
c8be6d7b | 262 | assert(http->out.offset == 0); |
b2d22df6 | 263 | |
655daa06 AR |
264 | http->request->clientConnection = http->getConn(); |
265 | ||
b2d22df6 | 266 | /* |
267 | * A refcounted pointer so that FwdState stays around as long as | |
268 | * this clientReplyContext does | |
269 | */ | |
94a396a3 | 270 | FwdState::fwdStart(http->getConn() != NULL ? http->getConn()->fd : -1, |
be0c6690 | 271 | http->storeEntry(), |
272 | http->request); | |
edce4d98 | 273 | /* Register with storage manager to receive updates when data comes in. */ |
62e76326 | 274 | |
edce4d98 | 275 | if (EBIT_TEST(entry->flags, ENTRY_ABORTED)) |
bf8fe701 | 276 | debugs(88, 0, "clientReplyContext::processExpired: Found ENTRY_ABORTED object"); |
62e76326 | 277 | |
c8be6d7b | 278 | { |
62e76326 | 279 | /* start counting the length from 0 */ |
8bcf08e0 FC |
280 | StoreIOBuffer localTempBuffer(HTTP_REQBUF_SZ, 0, tempbuf); |
281 | storeClientCopy(sc, entry, localTempBuffer, HandleIMSReply, this); | |
edce4d98 | 282 | } |
283 | } | |
284 | ||
edce4d98 | 285 | |
528b2c61 | 286 | void |
287 | clientReplyContext::sendClientUpstreamResponse() | |
288 | { | |
289 | StoreIOBuffer tempresult; | |
0655fa4d | 290 | removeStoreReference(&old_sc, &old_entry); |
2324cda2 | 291 | /* here the data to send is the data we just received */ |
528b2c61 | 292 | tempBuffer.offset = 0; |
293 | old_reqsize = 0; | |
0655fa4d | 294 | /* sendMoreData tracks the offset as well. |
528b2c61 | 295 | * Force it back to zero */ |
296 | reqofs = 0; | |
86a2f789 | 297 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 298 | /* TODO: provide sendMoreData with the ready parsed reply */ |
528b2c61 | 299 | tempresult.length = reqsize; |
300 | tempresult.data = tempbuf; | |
0655fa4d | 301 | sendMoreData(tempresult); |
528b2c61 | 302 | } |
303 | ||
edce4d98 | 304 | void |
0655fa4d | 305 | clientReplyContext::HandleIMSReply(void *data, StoreIOBuffer result) |
edce4d98 | 306 | { |
e6ccf245 | 307 | clientReplyContext *context = (clientReplyContext *)data; |
0655fa4d | 308 | context->handleIMSReply(result); |
309 | } | |
62e76326 | 310 | |
0655fa4d | 311 | void |
312 | clientReplyContext::sendClientOldEntry() | |
313 | { | |
314 | /* Get the old request back */ | |
315 | restoreState(); | |
316 | /* here the data to send is in the next nodes buffers already */ | |
86a2f789 | 317 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 318 | /* sendMoreData tracks the offset as well. |
319 | * Force it back to zero */ | |
320 | reqofs = 0; | |
321 | StoreIOBuffer tempresult (reqsize, reqofs, next()->readBuffer.data); | |
322 | sendMoreData(tempresult); | |
323 | } | |
62e76326 | 324 | |
1d7ab0f4 | 325 | /* This is the workhorse of the HandleIMSReply callback. |
326 | * | |
327 | * It is called when we've got data back from the origin following our | |
328 | * IMS request to revalidate a stale entry. | |
329 | */ | |
0655fa4d | 330 | void |
1d7ab0f4 | 331 | clientReplyContext::handleIMSReply(StoreIOBuffer result) |
0655fa4d | 332 | { |
1d7ab0f4 | 333 | if (deleting) |
334 | return; | |
62e76326 | 335 | |
bf8fe701 | 336 | debugs(88, 3, "handleIMSReply: " << http->storeEntry()->url() << ", " << (long unsigned) result.length << " bytes" ); |
62e76326 | 337 | |
1d7ab0f4 | 338 | if (http->storeEntry() == NULL) |
339 | return; | |
07947ad8 | 340 | |
1d7ab0f4 | 341 | if (result.flags.error && !EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) |
342 | return; | |
62e76326 | 343 | |
1d7ab0f4 | 344 | /* update size of the request */ |
345 | reqsize = result.length + reqofs; | |
62e76326 | 346 | |
1d7ab0f4 | 347 | const http_status status = http->storeEntry()->getReply()->sline.status; |
62e76326 | 348 | |
1d7ab0f4 | 349 | // request to origin was aborted |
350 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) { | |
bf8fe701 | 351 | debugs(88, 3, "handleIMSReply: request to origin aborted '" << http->storeEntry()->url() << "', sending old entry to client" ); |
7948b784 | 352 | http->logType = LOG_TCP_REFRESH_FAIL_OLD; |
1d7ab0f4 | 353 | sendClientOldEntry(); |
0655fa4d | 354 | } |
62e76326 | 355 | |
b297bcd0 | 356 | HttpReply *old_rep = (HttpReply *) old_entry->getReply(); |
62e76326 | 357 | |
b297bcd0 | 358 | // origin replied 304 |
b297bcd0 | 359 | if (status == HTTP_NOT_MODIFIED) { |
26ac0430 | 360 | http->logType = LOG_TCP_REFRESH_UNMODIFIED; |
045a76ab | 361 | |
26ac0430 | 362 | // update headers on existing entry |
4802f60d | 363 | old_rep->updateOnNotModified(http->storeEntry()->getReply()); |
26ac0430 | 364 | old_entry->timestampsSet(); |
62e76326 | 365 | |
26ac0430 | 366 | // if client sent IMS |
62e76326 | 367 | |
ee15ba9b | 368 | if (http->request->flags.ims && !old_entry->modifiedSince(http->request)) { |
26ac0430 AJ |
369 | // forward the 304 from origin |
370 | debugs(88, 3, "handleIMSReply: origin replied 304, revalidating existing entry and forwarding 304 to client"); | |
371 | sendClientUpstreamResponse(); | |
372 | } else { | |
373 | // send existing entry, it's still valid | |
374 | debugs(88, 3, "handleIMSReply: origin replied 304, revalidating existing entry and sending " << | |
4802f60d | 375 | old_rep->sline.status << " to client"); |
26ac0430 AJ |
376 | sendClientOldEntry(); |
377 | } | |
b297bcd0 | 378 | } |
62e76326 | 379 | |
b297bcd0 HN |
380 | // origin replied with a non-error code |
381 | else if (status > HTTP_STATUS_NONE && status < HTTP_INTERNAL_SERVER_ERROR) { | |
26ac0430 AJ |
382 | // forward response from origin |
383 | http->logType = LOG_TCP_REFRESH_MODIFIED; | |
384 | debugs(88, 3, "handleIMSReply: origin replied " << status << ", replacing existing entry and forwarding to client"); | |
385 | sendClientUpstreamResponse(); | |
b297bcd0 | 386 | } |
62e76326 | 387 | |
b297bcd0 | 388 | // origin replied with an error |
7948b784 AR |
389 | else if (http->request->flags.fail_on_validation_err) { |
390 | http->logType = LOG_TCP_REFRESH_FAIL_ERR; | |
391 | debugs(88, 3, "handleIMSReply: origin replied with error " << status << | |
392 | ", forwarding to client due to fail_on_validation_err"); | |
393 | sendClientUpstreamResponse(); | |
394 | } else { | |
26ac0430 | 395 | // ignore and let client have old entry |
7948b784 | 396 | http->logType = LOG_TCP_REFRESH_FAIL_OLD; |
26ac0430 AJ |
397 | debugs(88, 3, "handleIMSReply: origin replied with error " << |
398 | status << ", sending old entry (" << old_rep->sline.status << ") to client"); | |
399 | sendClientOldEntry(); | |
1d7ab0f4 | 400 | } |
edce4d98 | 401 | } |
402 | ||
e6ccf245 | 403 | extern "C" CSR clientGetMoreData; |
404 | extern "C" CSD clientReplyDetach; | |
edce4d98 | 405 | |
7d5f62a4 AJ |
406 | /** |
407 | * clientReplyContext::cacheHit Should only be called until the HTTP reply headers | |
edce4d98 | 408 | * have been parsed. Normally this should be a single call, but |
409 | * it might take more than one. As soon as we have the headers, | |
0655fa4d | 410 | * we hand off to clientSendMoreData, processExpired, or |
411 | * processMiss. | |
edce4d98 | 412 | */ |
413 | void | |
0655fa4d | 414 | clientReplyContext::CacheHit(void *data, StoreIOBuffer result) |
edce4d98 | 415 | { |
e6ccf245 | 416 | clientReplyContext *context = (clientReplyContext *)data; |
7d5f62a4 | 417 | context->cacheHit(result); |
0655fa4d | 418 | } |
419 | ||
7d5f62a4 AJ |
420 | /** |
421 | * Process a possible cache HIT. | |
422 | */ | |
0655fa4d | 423 | void |
424 | clientReplyContext::cacheHit(StoreIOBuffer result) | |
425 | { | |
7d5f62a4 | 426 | /** Ignore if the HIT object is being deleted. */ |
045a76ab | 427 | if (deleting) |
428 | return; | |
429 | ||
86a2f789 | 430 | StoreEntry *e = http->storeEntry(); |
045a76ab | 431 | |
190154cf | 432 | HttpRequest *r = http->request; |
045a76ab | 433 | |
4a7a3d56 | 434 | debugs(88, 3, "clientCacheHit: " << http->uri << ", " << result.length << " bytes"); |
62e76326 | 435 | |
86a2f789 | 436 | if (http->storeEntry() == NULL) { |
bf8fe701 | 437 | debugs(88, 3, "clientCacheHit: request aborted"); |
62e76326 | 438 | return; |
c8be6d7b | 439 | } else if (result.flags.error) { |
62e76326 | 440 | /* swap in failure */ |
bf8fe701 | 441 | debugs(88, 3, "clientCacheHit: swapin failure for " << http->uri); |
62e76326 | 442 | http->logType = LOG_TCP_SWAPFAIL_MISS; |
86a2f789 | 443 | removeClientStoreReference(&sc, http); |
0655fa4d | 444 | processMiss(); |
62e76326 | 445 | return; |
edce4d98 | 446 | } |
62e76326 | 447 | |
d3b3ab85 | 448 | if (result.length == 0) { |
62e76326 | 449 | /* the store couldn't get enough data from the file for us to id the |
450 | * object | |
451 | */ | |
452 | /* treat as a miss */ | |
453 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 454 | processMiss(); |
62e76326 | 455 | return; |
d3b3ab85 | 456 | } |
62e76326 | 457 | |
edce4d98 | 458 | assert(!EBIT_TEST(e->flags, ENTRY_ABORTED)); |
459 | /* update size of the request */ | |
0655fa4d | 460 | reqsize = result.length + reqofs; |
62e76326 | 461 | |
edce4d98 | 462 | /* |
463 | * Got the headers, now grok them | |
464 | */ | |
29b8d8d6 | 465 | assert(http->logType == LOG_TCP_HIT); |
62e76326 | 466 | |
cdd4e1c1 | 467 | if (strcmp(e->mem_obj->url, urlCanonical(r)) != 0) { |
26ac0430 | 468 | debugs(33, 1, "clientProcessHit: URL mismatch, '" << e->mem_obj->url << "' != '" << urlCanonical(r) << "'"); |
cdd4e1c1 | 469 | processMiss(); |
470 | return; | |
471 | } | |
472 | ||
edce4d98 | 473 | switch (varyEvaluateMatch(e, r)) { |
62e76326 | 474 | |
edce4d98 | 475 | case VARY_NONE: |
62e76326 | 476 | /* No variance detected. Continue as normal */ |
477 | break; | |
478 | ||
edce4d98 | 479 | case VARY_MATCH: |
62e76326 | 480 | /* This is the correct entity for this request. Continue */ |
bf8fe701 | 481 | debugs(88, 2, "clientProcessHit: Vary MATCH!"); |
62e76326 | 482 | break; |
483 | ||
edce4d98 | 484 | case VARY_OTHER: |
62e76326 | 485 | /* This is not the correct entity for this request. We need |
486 | * to requery the cache. | |
487 | */ | |
86a2f789 | 488 | removeClientStoreReference(&sc, http); |
62e76326 | 489 | e = NULL; |
490 | /* Note: varyEvalyateMatch updates the request with vary information | |
491 | * so we only get here once. (it also takes care of cancelling loops) | |
492 | */ | |
26ac0430 | 493 | debugs(88, 2, "clientProcessHit: Vary detected!"); |
0655fa4d | 494 | clientGetMoreData(ourNode, http); |
62e76326 | 495 | return; |
496 | ||
edce4d98 | 497 | case VARY_CANCEL: |
62e76326 | 498 | /* varyEvaluateMatch found a object loop. Process as miss */ |
bf8fe701 | 499 | debugs(88, 1, "clientProcessHit: Vary object loop!"); |
0655fa4d | 500 | processMiss(); |
62e76326 | 501 | return; |
edce4d98 | 502 | } |
62e76326 | 503 | |
edce4d98 | 504 | if (r->method == METHOD_PURGE) { |
86a2f789 | 505 | removeClientStoreReference(&sc, http); |
62e76326 | 506 | e = NULL; |
0655fa4d | 507 | purgeRequest(); |
62e76326 | 508 | return; |
edce4d98 | 509 | } |
62e76326 | 510 | |
3900307b | 511 | if (e->checkNegativeHit() |
626096be | 512 | #if USE_HTTP_VIOLATIONS |
36e6655b | 513 | && !r->flags.nocache_hack |
514 | #endif | |
515 | ) { | |
62e76326 | 516 | http->logType = LOG_TCP_NEGATIVE_HIT; |
0655fa4d | 517 | sendMoreData(result); |
bcfba8bd | 518 | } else if (!http->flags.internal && refreshCheckHTTP(e, r)) { |
bf8fe701 | 519 | debugs(88, 5, "clientCacheHit: in refreshCheck() block"); |
62e76326 | 520 | /* |
521 | * We hold a stale copy; it needs to be validated | |
522 | */ | |
523 | /* | |
524 | * The 'need_validation' flag is used to prevent forwarding | |
525 | * loops between siblings. If our copy of the object is stale, | |
526 | * then we should probably only use parents for the validation | |
527 | * request. Otherwise two siblings could generate a loop if | |
528 | * both have a stale version of the object. | |
529 | */ | |
530 | r->flags.need_validation = 1; | |
531 | ||
532 | if (e->lastmod < 0) { | |
533 | /* | |
534 | * Previous reply didn't have a Last-Modified header, | |
535 | * we cannot revalidate it. | |
536 | */ | |
537 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 538 | processMiss(); |
62e76326 | 539 | } else if (r->flags.nocache) { |
540 | /* | |
541 | * This did not match a refresh pattern that overrides no-cache | |
542 | * we should honour the client no-cache header. | |
543 | */ | |
544 | http->logType = LOG_TCP_CLIENT_REFRESH_MISS; | |
0655fa4d | 545 | processMiss(); |
62e76326 | 546 | } else if (r->protocol == PROTO_HTTP) { |
547 | /* | |
548 | * Object needs to be revalidated | |
549 | * XXX This could apply to FTP as well, if Last-Modified is known. | |
550 | */ | |
0655fa4d | 551 | processExpired(); |
62e76326 | 552 | } else { |
553 | /* | |
554 | * We don't know how to re-validate other protocols. Handle | |
555 | * them as if the object has expired. | |
556 | */ | |
557 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 558 | processMiss(); |
62e76326 | 559 | } |
79c8035e AR |
560 | } else if (r->conditional()) |
561 | processConditional(result); | |
562 | else { | |
62e76326 | 563 | /* |
564 | * plain ol' cache hit | |
565 | */ | |
566 | ||
8d5f19a0 | 567 | #if DELAY_POOLS |
ffdf45f2 | 568 | if (e->store_status != STORE_OK) |
849b826a | 569 | http->logType = LOG_TCP_MISS; |
5bf4d170 | 570 | else |
571 | #endif | |
26ac0430 AJ |
572 | if (e->mem_status == IN_MEMORY) |
573 | http->logType = LOG_TCP_MEM_HIT; | |
574 | else if (Config.onoff.offline) | |
575 | http->logType = LOG_TCP_OFFLINE_HIT; | |
62e76326 | 576 | |
0655fa4d | 577 | sendMoreData(result); |
edce4d98 | 578 | } |
579 | } | |
580 | ||
7d5f62a4 | 581 | /** |
edce4d98 | 582 | * Prepare to fetch the object as it's a cache miss of some kind. |
583 | */ | |
584 | void | |
0655fa4d | 585 | clientReplyContext::processMiss() |
edce4d98 | 586 | { |
edce4d98 | 587 | char *url = http->uri; |
190154cf | 588 | HttpRequest *r = http->request; |
edce4d98 | 589 | ErrorState *err = NULL; |
60745f24 | 590 | debugs(88, 4, "clientProcessMiss: '" << RequestMethodStr(r->method) << " " << url << "'"); |
7d5f62a4 AJ |
591 | |
592 | /** | |
edce4d98 | 593 | * We might have a left-over StoreEntry from a failed cache hit |
594 | * or IMS request. | |
595 | */ | |
86a2f789 | 596 | if (http->storeEntry()) { |
597 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_SPECIAL)) { | |
bf8fe701 | 598 | debugs(88, 0, "clientProcessMiss: miss on a special object (" << url << ")."); |
599 | debugs(88, 0, "\tlog_type = " << log_tags[http->logType]); | |
3900307b | 600 | http->storeEntry()->dump(1); |
62e76326 | 601 | } |
602 | ||
86a2f789 | 603 | removeClientStoreReference(&sc, http); |
edce4d98 | 604 | } |
62e76326 | 605 | |
7d5f62a4 | 606 | /** Check if its a PURGE request to be actioned. */ |
edce4d98 | 607 | if (r->method == METHOD_PURGE) { |
0655fa4d | 608 | purgeRequest(); |
62e76326 | 609 | return; |
edce4d98 | 610 | } |
914b89a2 | 611 | |
7d5f62a4 | 612 | /** Check if its an 'OTHER' request. Purge all cached entries if so and continue. */ |
914b89a2 | 613 | if (r->method == METHOD_OTHER) { |
26ac0430 | 614 | purgeAllCached(); |
60745f24 | 615 | } |
62e76326 | 616 | |
7d5f62a4 | 617 | /** Check if 'only-if-cached' flag is set. Action if so. */ |
0655fa4d | 618 | if (http->onlyIfCached()) { |
619 | processOnlyIfCachedMiss(); | |
62e76326 | 620 | return; |
edce4d98 | 621 | } |
62e76326 | 622 | |
ce5a16c2 AR |
623 | /// Deny loops for accelerator and interceptor. TODO: deny in all modes? |
624 | if (r->flags.loopdetect && | |
e1381638 | 625 | (http->flags.accel || http->flags.intercepted)) { |
62e76326 | 626 | http->al.http.code = HTTP_FORBIDDEN; |
cc192b50 | 627 | err = clientBuildError(ERR_ACCESS_DENIED, HTTP_FORBIDDEN, NULL, http->getConn()->peer, http->request); |
0655fa4d | 628 | createStoreEntry(r->method, request_flags()); |
86a2f789 | 629 | errorAppendEntry(http->storeEntry(), err); |
0655fa4d | 630 | triggerInitialStoreRead(); |
62e76326 | 631 | return; |
edce4d98 | 632 | } else { |
26ac0430 | 633 | assert(http->out.offset == 0); |
0655fa4d | 634 | createStoreEntry(r->method, r->flags); |
635 | triggerInitialStoreRead(); | |
62e76326 | 636 | |
637 | if (http->redirect.status) { | |
06a5ae20 | 638 | HttpReply *rep = new HttpReply; |
edce4d98 | 639 | #if LOG_TCP_REDIRECTS |
62e76326 | 640 | |
641 | http->logType = LOG_TCP_REDIRECT; | |
edce4d98 | 642 | #endif |
62e76326 | 643 | |
d88e3c49 | 644 | http->storeEntry()->releaseRequest(); |
06a5ae20 | 645 | rep->redirect(http->redirect.status, http->redirect.location); |
db237875 | 646 | http->storeEntry()->replaceHttpReply(rep); |
86a2f789 | 647 | http->storeEntry()->complete(); |
62e76326 | 648 | return; |
649 | } | |
650 | ||
7d5f62a4 | 651 | /** Check for internal requests. Update Protocol info if so. */ |
62e76326 | 652 | if (http->flags.internal) |
653 | r->protocol = PROTO_INTERNAL; | |
654 | ||
655daa06 AR |
655 | r->clientConnection = http->getConn(); |
656 | ||
7d5f62a4 | 657 | /** Start forwarding to get the new object from network */ |
94a396a3 | 658 | FwdState::fwdStart(http->getConn() != NULL ? http->getConn()->fd : -1, |
be0c6690 | 659 | http->storeEntry(), |
660 | r); | |
edce4d98 | 661 | } |
662 | } | |
663 | ||
7d5f62a4 | 664 | /** |
edce4d98 | 665 | * client issued a request with an only-if-cached cache-control directive; |
666 | * we did not find a cached object that can be returned without | |
667 | * contacting other servers; | |
668 | * respond with a 504 (Gateway Timeout) as suggested in [RFC 2068] | |
669 | */ | |
0655fa4d | 670 | void |
671 | clientReplyContext::processOnlyIfCachedMiss() | |
edce4d98 | 672 | { |
edce4d98 | 673 | ErrorState *err = NULL; |
bf8fe701 | 674 | debugs(88, 4, "clientProcessOnlyIfCachedMiss: '" << |
60745f24 | 675 | RequestMethodStr(http->request->method) << " " << http->uri << "'"); |
edce4d98 | 676 | http->al.http.code = HTTP_GATEWAY_TIMEOUT; |
cc192b50 | 677 | err = clientBuildError(ERR_ONLY_IF_CACHED_MISS, HTTP_GATEWAY_TIMEOUT, NULL, http->getConn()->peer, http->request); |
86a2f789 | 678 | removeClientStoreReference(&sc, http); |
0655fa4d | 679 | startError(err); |
edce4d98 | 680 | } |
681 | ||
79c8035e AR |
682 | /// process conditional request from client |
683 | void | |
684 | clientReplyContext::processConditional(StoreIOBuffer &result) | |
685 | { | |
686 | StoreEntry *e = http->storeEntry(); | |
687 | ||
688 | if (e->getReply()->sline.status != HTTP_OK) { | |
689 | debugs(88, 4, "clientReplyContext::processConditional: Reply code " << | |
690 | e->getReply()->sline.status << " != 200"); | |
691 | http->logType = LOG_TCP_MISS; | |
692 | processMiss(); | |
693 | return; | |
694 | } | |
695 | ||
696 | HttpRequest &r = *http->request; | |
697 | ||
698 | if (r.header.has(HDR_IF_MATCH) && !e->hasIfMatchEtag(r)) { | |
699 | // RFC 2616: reply with 412 Precondition Failed if If-Match did not match | |
700 | sendPreconditionFailedError(); | |
701 | return; | |
702 | } | |
703 | ||
704 | bool matchedIfNoneMatch = false; | |
705 | if (r.header.has(HDR_IF_NONE_MATCH)) { | |
706 | if (!e->hasIfNoneMatchEtag(r)) { | |
707 | // RFC 2616: ignore IMS if If-None-Match did not match | |
708 | r.flags.ims = 0; | |
709 | r.ims = -1; | |
710 | r.imslen = 0; | |
711 | r.header.delById(HDR_IF_MODIFIED_SINCE); | |
712 | http->logType = LOG_TCP_MISS; | |
713 | sendMoreData(result); | |
714 | return; | |
715 | } | |
716 | ||
717 | if (!r.flags.ims) { | |
718 | // RFC 2616: if If-None-Match matched and there is no IMS, | |
719 | // reply with 412 Precondition Failed | |
720 | sendPreconditionFailedError(); | |
721 | return; | |
722 | } | |
723 | ||
724 | // otherwise check IMS below to decide if we reply with 412 | |
725 | matchedIfNoneMatch = true; | |
726 | } | |
727 | ||
728 | if (r.flags.ims) { | |
729 | // handle If-Modified-Since requests from the client | |
730 | if (e->modifiedSince(&r)) { | |
731 | http->logType = LOG_TCP_IMS_HIT; | |
732 | sendMoreData(result); | |
733 | return; | |
734 | } | |
735 | ||
736 | if (matchedIfNoneMatch) { | |
737 | // If-None-Match matched, reply with 412 Precondition Failed | |
738 | sendPreconditionFailedError(); | |
739 | return; | |
740 | } | |
741 | ||
742 | // otherwise reply with 304 Not Modified | |
743 | const time_t timestamp = e->timestamp; | |
744 | HttpReply *const temprep = e->getReply()->make304(); | |
745 | http->logType = LOG_TCP_IMS_HIT; | |
746 | removeClientStoreReference(&sc, http); | |
747 | createStoreEntry(http->request->method, request_flags()); | |
748 | e = http->storeEntry(); | |
749 | // Copy timestamp from the original entry so the 304 | |
750 | // reply has a meaningful Age: header. | |
751 | e->timestamp = timestamp; | |
752 | e->replaceHttpReply(temprep); | |
753 | e->complete(); | |
754 | /* | |
755 | * TODO: why put this in the store and then serialise it and | |
756 | * then parse it again. Simply mark the request complete in | |
757 | * our context and write the reply struct to the client side. | |
758 | */ | |
759 | triggerInitialStoreRead(); | |
760 | } | |
761 | } | |
762 | ||
edce4d98 | 763 | void |
e6ccf245 | 764 | clientReplyContext::purgeRequestFindObjectToPurge() |
26ac0430 | 765 | { |
e6ccf245 | 766 | /* Try to find a base entry */ |
767 | http->flags.purging = 1; | |
768 | lookingforstore = 1; | |
26ac0430 AJ |
769 | |
770 | // TODO: can we use purgeAllCached() here instead of doing the | |
771 | // getPublicByRequestMethod() dance? | |
3b13a8fd | 772 | StoreEntry::getPublicByRequestMethod(this, http->request, METHOD_GET); |
e6ccf245 | 773 | } |
774 | ||
c1520b67 AJ |
775 | // Purges all entries with a given url |
776 | // TODO: move to SideAgent parent, when we have one | |
60745f24 | 777 | /* |
778 | * We probably cannot purge Vary-affected responses because their MD5 | |
779 | * keys depend on vary headers. | |
780 | */ | |
c1520b67 | 781 | void |
90bd689c | 782 | purgeEntriesByUrl(HttpRequest * req, const char *url) |
c1520b67 | 783 | { |
8dceeee3 BR |
784 | #if USE_HTCP |
785 | bool get_or_head_sent = false; | |
786 | #endif | |
26ac0430 | 787 | |
c1520b67 AJ |
788 | for (HttpRequestMethod m(METHOD_NONE); m != METHOD_ENUM_END; ++m) { |
789 | if (m.isCacheble()) { | |
790 | if (StoreEntry *entry = storeGetPublic(url, m)) { | |
791 | debugs(88, 5, "purging " << RequestMethodStr(m) << ' ' << url); | |
90bd689c | 792 | #if USE_HTCP |
8dceeee3 BR |
793 | neighborsHtcpClear(entry, url, req, m, HTCP_CLR_INVALIDATION); |
794 | if (m == METHOD_GET || m == METHOD_HEAD) { | |
795 | get_or_head_sent = true; | |
796 | } | |
90bd689c | 797 | #endif |
8dceeee3 | 798 | entry->release(); |
c1520b67 AJ |
799 | } |
800 | } | |
801 | } | |
8dceeee3 BR |
802 | |
803 | #if USE_HTCP | |
804 | if (!get_or_head_sent) { | |
805 | neighborsHtcpClear(NULL, url, req, HttpRequestMethod(METHOD_GET), HTCP_CLR_INVALIDATION); | |
806 | } | |
807 | #endif | |
c1520b67 AJ |
808 | } |
809 | ||
26ac0430 | 810 | void |
60745f24 | 811 | clientReplyContext::purgeAllCached() |
812 | { | |
26ac0430 | 813 | const char *url = urlCanonical(http->request); |
90bd689c | 814 | purgeEntriesByUrl(http->request, url); |
35ececa5 | 815 | } |
60745f24 | 816 | |
e6ccf245 | 817 | void |
3b13a8fd | 818 | clientReplyContext::created(StoreEntry *newEntry) |
e6ccf245 | 819 | { |
820 | if (lookingforstore == 1) | |
62e76326 | 821 | purgeFoundGet(newEntry); |
e6ccf245 | 822 | else if (lookingforstore == 2) |
62e76326 | 823 | purgeFoundHead(newEntry); |
e6ccf245 | 824 | else if (lookingforstore == 3) |
62e76326 | 825 | purgeDoPurgeGet(newEntry); |
e6ccf245 | 826 | else if (lookingforstore == 4) |
62e76326 | 827 | purgeDoPurgeHead(newEntry); |
e6ccf245 | 828 | else if (lookingforstore == 5) |
62e76326 | 829 | identifyFoundObject(newEntry); |
e6ccf245 | 830 | } |
831 | ||
832 | void | |
3b13a8fd | 833 | clientReplyContext::purgeFoundGet(StoreEntry *newEntry) |
e6ccf245 | 834 | { |
835 | if (newEntry->isNull()) { | |
62e76326 | 836 | lookingforstore = 2; |
837 | StoreEntry::getPublicByRequestMethod(this, http->request, METHOD_HEAD); | |
e6ccf245 | 838 | } else |
62e76326 | 839 | purgeFoundObject (newEntry); |
e6ccf245 | 840 | } |
841 | ||
842 | void | |
3b13a8fd | 843 | clientReplyContext::purgeFoundHead(StoreEntry *newEntry) |
e6ccf245 | 844 | { |
845 | if (newEntry->isNull()) | |
62e76326 | 846 | purgeDoMissPurge(); |
e6ccf245 | 847 | else |
62e76326 | 848 | purgeFoundObject (newEntry); |
e6ccf245 | 849 | } |
62e76326 | 850 | |
e6ccf245 | 851 | void |
3b13a8fd | 852 | clientReplyContext::purgeFoundObject(StoreEntry *entry) |
e6ccf245 | 853 | { |
854 | assert (entry && !entry->isNull()); | |
e4b9a2f0 | 855 | |
856 | if (EBIT_TEST(entry->flags, ENTRY_SPECIAL)) { | |
857 | http->logType = LOG_TCP_DENIED; | |
cc192b50 | 858 | ErrorState *err = clientBuildError(ERR_ACCESS_DENIED, HTTP_FORBIDDEN, NULL, http->getConn()->peer, http->request); |
e4b9a2f0 | 859 | startError(err); |
860 | return; | |
861 | } | |
862 | ||
8bcf08e0 | 863 | StoreIOBuffer localTempBuffer; |
62e76326 | 864 | /* Swap in the metadata */ |
86a2f789 | 865 | http->storeEntry(entry); |
34266cde | 866 | |
3d0ac046 | 867 | http->storeEntry()->lock(); |
3900307b | 868 | http->storeEntry()->createMemObject(http->uri, http->log_uri); |
34266cde | 869 | |
86a2f789 | 870 | http->storeEntry()->mem_obj->method = http->request->method; |
34266cde | 871 | |
86a2f789 | 872 | sc = storeClientListAdd(http->storeEntry(), this); |
34266cde | 873 | |
62e76326 | 874 | http->logType = LOG_TCP_HIT; |
34266cde | 875 | |
62e76326 | 876 | reqofs = 0; |
34266cde | 877 | |
8bcf08e0 | 878 | localTempBuffer.offset = http->out.offset; |
34266cde | 879 | |
8bcf08e0 | 880 | localTempBuffer.length = next()->readBuffer.length; |
34266cde | 881 | |
8bcf08e0 | 882 | localTempBuffer.data = next()->readBuffer.data; |
34266cde | 883 | |
86a2f789 | 884 | storeClientCopy(sc, http->storeEntry(), |
8bcf08e0 | 885 | localTempBuffer, CacheHit, this); |
e6ccf245 | 886 | } |
887 | ||
888 | void | |
889 | clientReplyContext::purgeRequest() | |
edce4d98 | 890 | { |
bf8fe701 | 891 | debugs(88, 3, "Config2.onoff.enable_purge = " << |
892 | Config2.onoff.enable_purge); | |
62e76326 | 893 | |
edce4d98 | 894 | if (!Config2.onoff.enable_purge) { |
62e76326 | 895 | http->logType = LOG_TCP_DENIED; |
cc192b50 | 896 | ErrorState *err = clientBuildError(ERR_ACCESS_DENIED, HTTP_FORBIDDEN, NULL, http->getConn()->peer, http->request); |
0655fa4d | 897 | startError(err); |
62e76326 | 898 | return; |
edce4d98 | 899 | } |
62e76326 | 900 | |
edce4d98 | 901 | /* Release both IP cache */ |
cc192b50 | 902 | ipcacheInvalidate(http->request->GetHost()); |
edce4d98 | 903 | |
e6ccf245 | 904 | if (!http->flags.purging) |
62e76326 | 905 | purgeRequestFindObjectToPurge(); |
e6ccf245 | 906 | else |
62e76326 | 907 | purgeDoMissPurge(); |
e6ccf245 | 908 | } |
909 | ||
910 | void | |
911 | clientReplyContext::purgeDoMissPurge() | |
912 | { | |
29b8d8d6 | 913 | http->logType = LOG_TCP_MISS; |
e6ccf245 | 914 | lookingforstore = 3; |
3b13a8fd | 915 | StoreEntry::getPublicByRequestMethod(this,http->request, METHOD_GET); |
e6ccf245 | 916 | } |
917 | ||
918 | void | |
3b13a8fd | 919 | clientReplyContext::purgeDoPurgeGet(StoreEntry *newEntry) |
e6ccf245 | 920 | { |
921 | assert (newEntry); | |
922 | /* Move to new() when that is created */ | |
923 | purgeStatus = HTTP_NOT_FOUND; | |
924 | ||
925 | if (!newEntry->isNull()) { | |
62e76326 | 926 | /* Release the cached URI */ |
bf8fe701 | 927 | debugs(88, 4, "clientPurgeRequest: GET '" << newEntry->url() << "'" ); |
8dceeee3 BR |
928 | #if USE_HTCP |
929 | neighborsHtcpClear(newEntry, NULL, http->request, HttpRequestMethod(METHOD_GET), HTCP_CLR_PURGE); | |
930 | #endif | |
5f33b71d | 931 | newEntry->release(); |
62e76326 | 932 | purgeStatus = HTTP_OK; |
edce4d98 | 933 | } |
62e76326 | 934 | |
e6ccf245 | 935 | lookingforstore = 4; |
3b13a8fd | 936 | StoreEntry::getPublicByRequestMethod(this, http->request, METHOD_HEAD); |
e6ccf245 | 937 | } |
938 | ||
939 | void | |
3b13a8fd | 940 | clientReplyContext::purgeDoPurgeHead(StoreEntry *newEntry) |
e6ccf245 | 941 | { |
4fc0ac76 | 942 | if (newEntry && !newEntry->isNull()) { |
bf8fe701 | 943 | debugs(88, 4, "clientPurgeRequest: HEAD '" << newEntry->url() << "'" ); |
8dceeee3 BR |
944 | #if USE_HTCP |
945 | neighborsHtcpClear(newEntry, NULL, http->request, HttpRequestMethod(METHOD_HEAD), HTCP_CLR_PURGE); | |
946 | #endif | |
5f33b71d | 947 | newEntry->release(); |
62e76326 | 948 | purgeStatus = HTTP_OK; |
edce4d98 | 949 | } |
62e76326 | 950 | |
edce4d98 | 951 | /* And for Vary, release the base URI if none of the headers was included in the request */ |
62e76326 | 952 | |
edce4d98 | 953 | if (http->request->vary_headers |
62e76326 | 954 | && !strstr(http->request->vary_headers, "=")) { |
955 | StoreEntry *entry = storeGetPublic(urlCanonical(http->request), METHOD_GET); | |
956 | ||
957 | if (entry) { | |
bf8fe701 | 958 | debugs(88, 4, "clientPurgeRequest: Vary GET '" << entry->url() << "'" ); |
8dceeee3 BR |
959 | #if USE_HTCP |
960 | neighborsHtcpClear(entry, NULL, http->request, HttpRequestMethod(METHOD_GET), HTCP_CLR_PURGE); | |
961 | #endif | |
5f33b71d | 962 | entry->release(); |
62e76326 | 963 | purgeStatus = HTTP_OK; |
964 | } | |
965 | ||
966 | entry = storeGetPublic(urlCanonical(http->request), METHOD_HEAD); | |
967 | ||
968 | if (entry) { | |
bf8fe701 | 969 | debugs(88, 4, "clientPurgeRequest: Vary HEAD '" << entry->url() << "'" ); |
8dceeee3 BR |
970 | #if USE_HTCP |
971 | neighborsHtcpClear(entry, NULL, http->request, HttpRequestMethod(METHOD_HEAD), HTCP_CLR_PURGE); | |
972 | #endif | |
5f33b71d | 973 | entry->release(); |
62e76326 | 974 | purgeStatus = HTTP_OK; |
975 | } | |
edce4d98 | 976 | } |
62e76326 | 977 | |
edce4d98 | 978 | /* |
979 | * Make a new entry to hold the reply to be written | |
980 | * to the client. | |
981 | */ | |
528b2c61 | 982 | /* FIXME: This doesn't need to go through the store. Simply |
983 | * push down the client chain | |
984 | */ | |
0655fa4d | 985 | createStoreEntry(http->request->method, request_flags()); |
62e76326 | 986 | |
0655fa4d | 987 | triggerInitialStoreRead(); |
62e76326 | 988 | |
7dc5f514 | 989 | HttpReply *rep = new HttpReply; |
11992b6f | 990 | rep->setHeaders(purgeStatus, NULL, NULL, 0, 0, -1); |
7dc5f514 | 991 | http->storeEntry()->replaceHttpReply(rep); |
86a2f789 | 992 | http->storeEntry()->complete(); |
edce4d98 | 993 | } |
994 | ||
995 | void | |
0655fa4d | 996 | clientReplyContext::traceReply(clientStreamNode * node) |
edce4d98 | 997 | { |
076df709 | 998 | clientStreamNode *nextNode = (clientStreamNode *)node->node.next->data; |
8bcf08e0 | 999 | StoreIOBuffer localTempBuffer; |
0655fa4d | 1000 | assert(http->request->max_forwards == 0); |
1001 | createStoreEntry(http->request->method, request_flags()); | |
076df709 FC |
1002 | localTempBuffer.offset = nextNode->readBuffer.offset + headers_sz; |
1003 | localTempBuffer.length = nextNode->readBuffer.length; | |
1004 | localTempBuffer.data = nextNode->readBuffer.data; | |
86a2f789 | 1005 | storeClientCopy(sc, http->storeEntry(), |
8bcf08e0 | 1006 | localTempBuffer, SendMoreData, this); |
d88e3c49 | 1007 | http->storeEntry()->releaseRequest(); |
3900307b | 1008 | http->storeEntry()->buffer(); |
7dc5f514 | 1009 | HttpReply *rep = new HttpReply; |
11992b6f | 1010 | rep->setHeaders(HTTP_OK, NULL, "text/plain", http->request->prefixLen(), 0, squid_curtime); |
db237875 | 1011 | http->storeEntry()->replaceHttpReply(rep); |
5cafad19 | 1012 | http->request->swapOut(http->storeEntry()); |
86a2f789 | 1013 | http->storeEntry()->complete(); |
edce4d98 | 1014 | } |
1015 | ||
1016 | #define SENDING_BODY 0 | |
1017 | #define SENDING_HDRSONLY 1 | |
1018 | int | |
0655fa4d | 1019 | clientReplyContext::checkTransferDone() |
edce4d98 | 1020 | { |
86a2f789 | 1021 | StoreEntry *entry = http->storeEntry(); |
62e76326 | 1022 | |
edce4d98 | 1023 | if (entry == NULL) |
62e76326 | 1024 | return 0; |
1025 | ||
1026 | /* | |
edce4d98 | 1027 | * For now, 'done_copying' is used for special cases like |
1028 | * Range and HEAD requests. | |
1029 | */ | |
0655fa4d | 1030 | if (http->flags.done_copying) |
62e76326 | 1031 | return 1; |
1032 | ||
4ad60609 AR |
1033 | if (http->request->flags.chunked_reply && !flags.complete) { |
1034 | // last-chunk was not sent | |
1035 | return 0; | |
1036 | } | |
1037 | ||
edce4d98 | 1038 | /* |
1039 | * Handle STORE_OK objects. | |
1040 | * objectLen(entry) will be set proprely. | |
26ac0430 | 1041 | * RC: Does objectLen(entry) include the Headers? |
0e3be1ea | 1042 | * RC: Yes. |
edce4d98 | 1043 | */ |
1044 | if (entry->store_status == STORE_OK) { | |
0655fa4d | 1045 | return storeOKTransferDone(); |
e39b9382 | 1046 | } else { |
0655fa4d | 1047 | return storeNotOKTransferDone(); |
edce4d98 | 1048 | } |
e39b9382 | 1049 | } |
1050 | ||
1051 | int | |
1052 | clientReplyContext::storeOKTransferDone() const | |
1053 | { | |
47f6e231 | 1054 | if (http->out.offset >= http->storeEntry()->objectLen() - headers_sz) { |
26ac0430 AJ |
1055 | debugs(88,3,HERE << "storeOKTransferDone " << |
1056 | " out.offset=" << http->out.offset << | |
1057 | " objectLen()=" << http->storeEntry()->objectLen() << | |
1058 | " headers_sz=" << headers_sz); | |
62e76326 | 1059 | return 1; |
47f6e231 | 1060 | } |
62e76326 | 1061 | |
e39b9382 | 1062 | return 0; |
1063 | } | |
1064 | ||
1065 | int | |
1066 | clientReplyContext::storeNotOKTransferDone() const | |
1067 | { | |
edce4d98 | 1068 | /* |
1069 | * Now, handle STORE_PENDING objects | |
1070 | */ | |
86a2f789 | 1071 | MemObject *mem = http->storeEntry()->mem_obj; |
edce4d98 | 1072 | assert(mem != NULL); |
1073 | assert(http->request != NULL); | |
0e3be1ea | 1074 | /* mem->reply was wrong because it uses the UPSTREAM header length!!! */ |
8bcf08e0 | 1075 | HttpReply const *curReply = mem->getReply(); |
62e76326 | 1076 | |
e39b9382 | 1077 | if (headers_sz == 0) |
62e76326 | 1078 | /* haven't found end of headers yet */ |
1079 | return 0; | |
e39b9382 | 1080 | |
1081 | int sending = SENDING_BODY; | |
62e76326 | 1082 | |
8bcf08e0 FC |
1083 | if (curReply->sline.status == HTTP_NO_CONTENT || |
1084 | curReply->sline.status == HTTP_NOT_MODIFIED || | |
1085 | curReply->sline.status < HTTP_OK || | |
62e76326 | 1086 | http->request->method == METHOD_HEAD) |
1087 | sending = SENDING_HDRSONLY; | |
1088 | ||
edce4d98 | 1089 | /* |
1090 | * Figure out how much data we are supposed to send. | |
1091 | * If we are sending a body and we don't have a content-length, | |
1092 | * then we must wait for the object to become STORE_OK. | |
1093 | */ | |
8bcf08e0 | 1094 | if (curReply->content_length < 0) |
62e76326 | 1095 | return 0; |
e39b9382 | 1096 | |
8bcf08e0 | 1097 | int64_t expectedLength = curReply->content_length + http->out.headers_sz; |
62e76326 | 1098 | |
e39b9382 | 1099 | if (http->out.size < expectedLength) |
62e76326 | 1100 | return 0; |
47f6e231 | 1101 | else { |
26ac0430 AJ |
1102 | debugs(88,3,HERE << "storeNotOKTransferDone " << |
1103 | " out.size=" << http->out.size << | |
1104 | " expectedLength=" << expectedLength); | |
62e76326 | 1105 | return 1; |
47f6e231 | 1106 | } |
edce4d98 | 1107 | } |
1108 | ||
1109 | ||
edce4d98 | 1110 | /* A write has completed, what is the next status based on the |
1111 | * canonical request data? | |
1112 | * 1 something is wrong | |
1113 | * 0 nothing is wrong. | |
1114 | * | |
1115 | */ | |
1116 | int | |
59a1efb2 | 1117 | clientHttpRequestStatus(int fd, ClientHttpRequest const *http) |
edce4d98 | 1118 | { |
062f7f4e FC |
1119 | #if SIZEOF_INT64_T == 4 |
1120 | if (http->out.size > 0x7FFF0000) { | |
1121 | debugs(88, 1, "WARNING: closing FD " << fd << " to prevent out.size counter overflow"); | |
1122 | debugs(88, 1, "\tclient " << http->getConn()->peer); | |
1123 | debugs(88, 1, "\treceived " << http->out.size << " bytes"); | |
1124 | debugs(88, 1, "\tURI " << http->log_uri); | |
1125 | return 1; | |
1126 | } | |
1127 | ||
1128 | if (http->out.offset > 0x7FFF0000) { | |
1129 | debugs(88, 1, "WARNING: closing FD " << fd < " to prevent out.offset counter overflow"); | |
1130 | debugs(88, 1, "\tclient " << http->getConn()->peer); | |
1131 | debugs(88, 1, "\treceived " << http->out.size << " bytes, offset " << http->out.offset); | |
1132 | debugs(88, 1, "\tURI " << http->log_uri); | |
1133 | return 1; | |
1134 | } | |
1135 | ||
1136 | #endif | |
edce4d98 | 1137 | return 0; |
1138 | } | |
1139 | ||
62e76326 | 1140 | /* Preconditions: |
edce4d98 | 1141 | * *http is a valid structure. |
1142 | * fd is either -1, or an open fd. | |
1143 | * | |
1144 | * TODO: enumify this | |
1145 | * | |
1146 | * This function is used by any http request sink, to determine the status | |
1147 | * of the object. | |
1148 | */ | |
1149 | clientStream_status_t | |
59a1efb2 | 1150 | clientReplyStatus(clientStreamNode * aNode, ClientHttpRequest * http) |
edce4d98 | 1151 | { |
0655fa4d | 1152 | clientReplyContext *context = dynamic_cast<clientReplyContext *>(aNode->data.getRaw()); |
1153 | assert (context); | |
1154 | assert (context->http == http); | |
1155 | return context->replyStatus(); | |
1156 | } | |
1157 | ||
1158 | clientStream_status_t | |
1159 | clientReplyContext::replyStatus() | |
1160 | { | |
edce4d98 | 1161 | int done; |
1162 | /* Here because lower nodes don't need it */ | |
62e76326 | 1163 | |
3daaed1a | 1164 | if (http->storeEntry() == NULL) { |
1165 | debugs(88, 5, "clientReplyStatus: no storeEntry"); | |
62e76326 | 1166 | return STREAM_FAILED; /* yuck, but what can we do? */ |
3daaed1a | 1167 | } |
62e76326 | 1168 | |
3daaed1a | 1169 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) { |
62e76326 | 1170 | /* TODO: Could upstream read errors (result.flags.error) be |
1171 | * lost, and result in undersize requests being considered | |
1172 | * complete. Should we tcp reset such connections ? | |
1173 | */ | |
3daaed1a | 1174 | debugs(88, 5, "clientReplyStatus: aborted storeEntry"); |
62e76326 | 1175 | return STREAM_FAILED; |
3daaed1a | 1176 | } |
62e76326 | 1177 | |
0655fa4d | 1178 | if ((done = checkTransferDone()) != 0 || flags.complete) { |
bf8fe701 | 1179 | debugs(88, 5, "clientReplyStatus: transfer is DONE"); |
62e76326 | 1180 | /* Ok we're finished, but how? */ |
1181 | ||
4ad60609 AR |
1182 | const int64_t expectedBodySize = |
1183 | http->storeEntry()->getReply()->bodySize(http->request->method); | |
1184 | if (!http->request->flags.proxy_keepalive && expectedBodySize < 0) { | |
bf8fe701 | 1185 | debugs(88, 5, "clientReplyStatus: closing, content_length < 0"); |
62e76326 | 1186 | return STREAM_FAILED; |
1187 | } | |
1188 | ||
1189 | if (!done) { | |
bf8fe701 | 1190 | debugs(88, 5, "clientReplyStatus: closing, !done, but read 0 bytes"); |
62e76326 | 1191 | return STREAM_FAILED; |
1192 | } | |
1193 | ||
4ad60609 | 1194 | if (expectedBodySize >= 0 && !http->gotEnough()) { |
bf8fe701 | 1195 | debugs(88, 5, "clientReplyStatus: client didn't get all it expected"); |
62e76326 | 1196 | return STREAM_UNPLANNED_COMPLETE; |
1197 | } | |
1198 | ||
1199 | if (http->request->flags.proxy_keepalive) { | |
bf8fe701 | 1200 | debugs(88, 5, "clientReplyStatus: stream complete and can keepalive"); |
62e76326 | 1201 | return STREAM_COMPLETE; |
1202 | } | |
1203 | ||
bf8fe701 | 1204 | debugs(88, 5, "clientReplyStatus: stream was not expected to complete!"); |
62e76326 | 1205 | return STREAM_UNPLANNED_COMPLETE; |
edce4d98 | 1206 | } |
62e76326 | 1207 | |
16611143 | 1208 | // XXX: Should this be checked earlier? We could return above w/o checking. |
1209 | if (reply->receivedBodyTooLarge(*http->request, http->out.offset - 4096)) { | |
b51aec66 | 1210 | /* 4096 is a margin for the HTTP headers included in out.offset */ |
bf8fe701 | 1211 | debugs(88, 5, "clientReplyStatus: client reply body is too large"); |
62e76326 | 1212 | return STREAM_FAILED; |
0e3be1ea | 1213 | } |
62e76326 | 1214 | |
edce4d98 | 1215 | return STREAM_NONE; |
1216 | } | |
1217 | ||
62e76326 | 1218 | /* Responses with no body will not have a content-type header, |
edce4d98 | 1219 | * which breaks the rep_mime_type acl, which |
1220 | * coincidentally, is the most common acl for reply access lists. | |
1221 | * A better long term fix for this is to allow acl matchs on the various | |
26ac0430 AJ |
1222 | * status codes, and then supply a default ruleset that puts these |
1223 | * codes before any user defines access entries. That way the user | |
edce4d98 | 1224 | * can choose to block these responses where appropriate, but won't get |
1225 | * mysterious breakages. | |
1226 | */ | |
0655fa4d | 1227 | bool |
1228 | clientReplyContext::alwaysAllowResponse(http_status sline) const | |
edce4d98 | 1229 | { |
4ef4b952 | 1230 | bool result; |
1231 | ||
edce4d98 | 1232 | switch (sline) { |
62e76326 | 1233 | |
edce4d98 | 1234 | case HTTP_CONTINUE: |
62e76326 | 1235 | |
edce4d98 | 1236 | case HTTP_SWITCHING_PROTOCOLS: |
62e76326 | 1237 | |
edce4d98 | 1238 | case HTTP_PROCESSING: |
62e76326 | 1239 | |
edce4d98 | 1240 | case HTTP_NO_CONTENT: |
62e76326 | 1241 | |
edce4d98 | 1242 | case HTTP_NOT_MODIFIED: |
4ef4b952 | 1243 | result = true; |
62e76326 | 1244 | break; |
1245 | ||
edce4d98 | 1246 | default: |
4ef4b952 | 1247 | result = false; |
edce4d98 | 1248 | } |
4ef4b952 | 1249 | |
1250 | return result; | |
edce4d98 | 1251 | } |
1252 | ||
a5c8d64d AJ |
1253 | /** |
1254 | * Generate the reply headers sent to client. | |
1255 | * | |
1256 | * Filters out unwanted entries and hop-by-hop from original reply header | |
1257 | * then adds extra entries if we have more info than origin server | |
1258 | * then adds Squid specific entries | |
edce4d98 | 1259 | */ |
0655fa4d | 1260 | void |
1261 | clientReplyContext::buildReplyHeader() | |
edce4d98 | 1262 | { |
7dc5f514 | 1263 | HttpHeader *hdr = &reply->header; |
c8be6d7b | 1264 | int is_hit = logTypeIsATcpHit(http->logType); |
190154cf | 1265 | HttpRequest *request = http->request; |
edce4d98 | 1266 | #if DONT_FILTER_THESE |
1267 | /* but you might want to if you run Squid as an HTTP accelerator */ | |
a9925b40 | 1268 | /* hdr->delById(HDR_ACCEPT_RANGES); */ |
1269 | hdr->delById(HDR_ETAG); | |
edce4d98 | 1270 | #endif |
62e76326 | 1271 | |
edce4d98 | 1272 | if (is_hit) |
a9925b40 | 1273 | hdr->delById(HDR_SET_COOKIE); |
62e76326 | 1274 | |
26ac0430 | 1275 | // if there is not configured a peer proxy with login=PASS option enabled |
dcf3665b AJ |
1276 | // remove the Proxy-Authenticate header |
1277 | if ( !(request->peer_login && strcmp(request->peer_login,"PASS") ==0)) | |
26ac0430 | 1278 | reply->header.delById(HDR_PROXY_AUTHENTICATE); |
dcf3665b | 1279 | |
2cdeea82 | 1280 | reply->header.removeHopByHopEntries(); |
62e76326 | 1281 | |
1282 | // if (request->range) | |
7dc5f514 | 1283 | // clientBuildRangeHeader(http, reply); |
a5c8d64d | 1284 | |
edce4d98 | 1285 | /* |
1286 | * Add a estimated Age header on cache hits. | |
1287 | */ | |
1288 | if (is_hit) { | |
62e76326 | 1289 | /* |
1290 | * Remove any existing Age header sent by upstream caches | |
1291 | * (note that the existing header is passed along unmodified | |
1292 | * on cache misses) | |
1293 | */ | |
a9925b40 | 1294 | hdr->delById(HDR_AGE); |
62e76326 | 1295 | /* |
1296 | * This adds the calculated object age. Note that the details of the | |
1297 | * age calculation is performed by adjusting the timestamp in | |
3900307b | 1298 | * StoreEntry::timestampsSet(), not here. |
62e76326 | 1299 | */ |
a5c8d64d AJ |
1300 | #if DEAD_CODE |
1301 | // XXX: realy useless? or is there a bug now that this is detatched from the below if-sequence ? | |
1302 | // looks like this pre-if was supposed to be the browser workaround... | |
86a2f789 | 1303 | if (NULL == http->storeEntry()) |
62e76326 | 1304 | (void) 0; |
86a2f789 | 1305 | else if (http->storeEntry()->timestamp < 0) |
62e76326 | 1306 | (void) 0; |
a5c8d64d | 1307 | #endif |
bbe58ab5 | 1308 | |
1309 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_SPECIAL)) { | |
a9925b40 | 1310 | hdr->delById(HDR_DATE); |
1311 | hdr->insertTime(HDR_DATE, squid_curtime); | |
a81e7089 | 1312 | } else if (http->storeEntry()->timestamp <= squid_curtime) { |
a9925b40 | 1313 | hdr->putInt(HDR_AGE, |
1314 | squid_curtime - http->storeEntry()->timestamp); | |
62e76326 | 1315 | /* Signal old objects. NB: rfc 2616 is not clear, |
1316 | * by implication, on whether we should do this to all | |
1317 | * responses, or only cache hits. | |
1318 | * 14.46 states it ONLY applys for heuristically caclulated | |
1319 | * freshness values, 13.2.4 doesn't specify the same limitation. | |
1320 | * We interpret RFC 2616 under the combination. | |
1321 | */ | |
1322 | /* TODO: if maxage or s-maxage is present, don't do this */ | |
1323 | ||
86a2f789 | 1324 | if (squid_curtime - http->storeEntry()->timestamp >= 86400) { |
8bcf08e0 FC |
1325 | char tbuf[512]; |
1326 | snprintf (tbuf, sizeof(tbuf), "%s %s %s", | |
62e76326 | 1327 | "113", ThisCache, |
1328 | "This cache hit is still fresh and more than 1 day old"); | |
8bcf08e0 | 1329 | hdr->putStr(HDR_WARNING, tbuf); |
62e76326 | 1330 | } |
1331 | } | |
a5c8d64d | 1332 | } |
528b2c61 | 1333 | |
a5c8d64d AJ |
1334 | /* RFC 2616: Section 14.18 |
1335 | * | |
1336 | * Add a Date: header if missing. | |
1337 | * We have access to a clock therefore are required to amend any shortcoming in servers. | |
1338 | * | |
1339 | * NP: done after Age: to prevent ENTRY_SPECIAL double-handling this header. | |
1340 | */ | |
1341 | if ( !hdr->has(HDR_DATE) ) { | |
f0dedeb5 | 1342 | if (!http->storeEntry()) |
a5c8d64d | 1343 | hdr->insertTime(HDR_DATE, squid_curtime); |
f0dedeb5 AJ |
1344 | else if (http->storeEntry()->timestamp > 0) |
1345 | hdr->insertTime(HDR_DATE, http->storeEntry()->timestamp); | |
1346 | else { | |
1347 | debugs(88,1,"WARNING: An error inside Squid has caused an HTTP reply without Date:. Please report this"); | |
1348 | /* TODO: dump something useful about the problem */ | |
1349 | } | |
edce4d98 | 1350 | } |
62e76326 | 1351 | |
bcfba8bd AR |
1352 | // add Warnings required by RFC 2616 if serving a stale hit |
1353 | if (http->request->flags.stale_if_hit && logTypeIsATcpHit(http->logType)) { | |
1354 | hdr->putWarning(110, "Response is stale"); | |
1355 | if (http->request->flags.need_validation) | |
1356 | hdr->putWarning(111, "Revalidation failed"); | |
1357 | } | |
1358 | ||
0bd9aa82 | 1359 | /* Filter unproxyable authentication types */ |
dcf3665b | 1360 | |
ddd31ed3 | 1361 | if (http->logType != LOG_TCP_DENIED && |
d67acb4e | 1362 | hdr->has(HDR_WWW_AUTHENTICATE)) { |
62e76326 | 1363 | HttpHeaderPos pos = HttpHeaderInitPos; |
1364 | HttpHeaderEntry *e; | |
1365 | ||
26ac0430 | 1366 | int connection_auth_blocked = 0; |
a9925b40 | 1367 | while ((e = hdr->getEntry(&pos))) { |
d67acb4e | 1368 | if (e->id == HDR_WWW_AUTHENTICATE) { |
5b4117d8 | 1369 | const char *value = e->value.rawBuf(); |
62e76326 | 1370 | |
1371 | if ((strncasecmp(value, "NTLM", 4) == 0 && | |
1372 | (value[4] == '\0' || value[4] == ' ')) | |
1373 | || | |
1374 | (strncasecmp(value, "Negotiate", 9) == 0 && | |
d67acb4e | 1375 | (value[9] == '\0' || value[9] == ' ')) |
26ac0430 AJ |
1376 | || |
1377 | (strncasecmp(value, "Kerberos", 8) == 0 && | |
1378 | (value[8] == '\0' || value[8] == ' '))) { | |
1379 | if (request->flags.connection_auth_disabled) { | |
1380 | hdr->delAt(pos, connection_auth_blocked); | |
d67acb4e AJ |
1381 | continue; |
1382 | } | |
26ac0430 AJ |
1383 | request->flags.must_keepalive = 1; |
1384 | if (!request->flags.accelerated && !request->flags.intercepted) { | |
d67acb4e | 1385 | httpHeaderPutStrf(hdr, HDR_PROXY_SUPPORT, "Session-Based-Authentication"); |
26ac0430 AJ |
1386 | /* |
1387 | We send "[Proxy-]Connection: Proxy-Support" header to mark | |
1388 | Proxy-Support as a hop-by-hop header for intermediaries that do not | |
1389 | understand the semantics of this header. The RFC should have included | |
1390 | this recommendation. | |
1391 | */ | |
d67acb4e AJ |
1392 | httpHeaderPutStrf(hdr, HDR_CONNECTION, "Proxy-support"); |
1393 | } | |
1394 | break; | |
26ac0430 | 1395 | } |
62e76326 | 1396 | } |
1397 | } | |
d67acb4e AJ |
1398 | |
1399 | if (connection_auth_blocked) | |
ba9fb01d | 1400 | hdr->refreshMask(); |
0bd9aa82 | 1401 | } |
62e76326 | 1402 | |
edce4d98 | 1403 | /* Handle authentication headers */ |
26ac0430 AJ |
1404 | if (http->logType == LOG_TCP_DENIED && |
1405 | ( reply->sline.status == HTTP_PROXY_AUTHENTICATION_REQUIRED || | |
1406 | reply->sline.status == HTTP_UNAUTHORIZED) | |
1407 | ) { | |
1408 | /* Add authentication header */ | |
1409 | /*! \todo alter errorstate to be accel on|off aware. The 0 on the next line | |
1410 | * depends on authenticate behaviour: all schemes to date send no extra | |
1411 | * data on 407/401 responses, and do not check the accel state on 401/407 | |
1412 | * responses | |
1413 | */ | |
1414 | authenticateFixHeader(reply, request->auth_user_request, request, 0, 1); | |
a33a428a AJ |
1415 | } else if (request->auth_user_request != NULL) |
1416 | authenticateFixHeader(reply, request->auth_user_request, request, http->flags.accel, 0); | |
62e76326 | 1417 | |
edce4d98 | 1418 | /* Append X-Cache */ |
1419 | httpHeaderPutStrf(hdr, HDR_X_CACHE, "%s from %s", | |
62e76326 | 1420 | is_hit ? "HIT" : "MISS", getMyHostname()); |
1421 | ||
edce4d98 | 1422 | #if USE_CACHE_DIGESTS |
1423 | /* Append X-Cache-Lookup: -- temporary hack, to be removed @?@ @?@ */ | |
1424 | httpHeaderPutStrf(hdr, HDR_X_CACHE_LOOKUP, "%s from %s:%d", | |
0655fa4d | 1425 | lookup_type ? lookup_type : "NONE", |
62e76326 | 1426 | getMyHostname(), getMyPort()); |
1427 | ||
edce4d98 | 1428 | #endif |
62e76326 | 1429 | |
4ad60609 | 1430 | const bool maySendChunkedReply = !request->multipartRangeRequest() && |
4cb2536f | 1431 | (request->http_ver >= HttpVersion(1, 1)); |
4ad60609 | 1432 | |
f529bb20 | 1433 | /* Check whether we should send keep-alive */ |
58850d15 | 1434 | if (!Config.onoff.error_pconns && reply->sline.status >= 400 && !request->flags.must_keepalive) { |
bf8fe701 | 1435 | debugs(33, 3, "clientBuildReplyHeader: Error, don't keep-alive"); |
58850d15 | 1436 | request->flags.proxy_keepalive = 0; |
af6a12ee | 1437 | } else if (!Config.onoff.client_pconns && !request->flags.must_keepalive) { |
17b57873 | 1438 | debugs(33, 2, "clientBuildReplyHeader: Connection Keep-Alive not requested by admin or client"); |
f5e45ad8 | 1439 | request->flags.proxy_keepalive = 0; |
af6a12ee | 1440 | } else if (request->flags.proxy_keepalive && shutting_down) { |
f529bb20 | 1441 | debugs(88, 3, "clientBuildReplyHeader: Shutting down, don't keep-alive."); |
1442 | request->flags.proxy_keepalive = 0; | |
af6a12ee | 1443 | } else if (request->flags.connection_auth && !reply->keep_alive) { |
26ac0430 AJ |
1444 | debugs(33, 2, "clientBuildReplyHeader: Connection oriented auth but server side non-persistent"); |
1445 | request->flags.proxy_keepalive = 0; | |
4ad60609 | 1446 | } else if (reply->bodySize(request->method) < 0 && !maySendChunkedReply) { |
17b57873 AJ |
1447 | debugs(88, 3, "clientBuildReplyHeader: can't keep-alive, unknown body size" ); |
1448 | request->flags.proxy_keepalive = 0; | |
af6a12ee | 1449 | } else if (fdUsageHigh()&& !request->flags.must_keepalive) { |
17b57873 AJ |
1450 | debugs(88, 3, "clientBuildReplyHeader: Not many unused FDs, can't keep-alive"); |
1451 | request->flags.proxy_keepalive = 0; | |
1452 | } | |
d67acb4e | 1453 | |
4ad60609 AR |
1454 | // Decide if we send chunked reply |
1455 | if (maySendChunkedReply && | |
4cb2536f A |
1456 | request->flags.proxy_keepalive && |
1457 | reply->bodySize(request->method) < 0) { | |
4ad60609 AR |
1458 | debugs(88, 3, "clientBuildReplyHeader: chunked reply"); |
1459 | request->flags.chunked_reply = 1; | |
1460 | hdr->putStr(HDR_TRANSFER_ENCODING, "chunked"); | |
1461 | } | |
f529bb20 | 1462 | |
4dea3fdd | 1463 | /* Append VIA */ |
92caea77 | 1464 | if (Config.onoff.via) { |
62e76326 | 1465 | LOCAL_ARRAY(char, bbuf, MAX_URL + 32); |
30abd221 | 1466 | String strVia; |
26ac0430 | 1467 | hdr->getList(HDR_VIA, &strVia); |
88331887 | 1468 | snprintf(bbuf, MAX_URL + 32, "%d.%d %s", |
7dc5f514 | 1469 | reply->sline.version.major, |
1470 | reply->sline.version.minor, | |
62e76326 | 1471 | ThisCache); |
1472 | strListAdd(&strVia, bbuf, ','); | |
a9925b40 | 1473 | hdr->delById(HDR_VIA); |
5b4117d8 | 1474 | hdr->putStr(HDR_VIA, strVia.termedBuf()); |
c8be6d7b | 1475 | } |
95e78500 AJ |
1476 | /* Signal keep-alive or close explicitly */ |
1477 | hdr->putStr(HDR_CONNECTION, request->flags.proxy_keepalive ? "keep-alive" : "close"); | |
62e76326 | 1478 | |
edce4d98 | 1479 | #if ADD_X_REQUEST_URI |
1480 | /* | |
1481 | * Knowing the URI of the request is useful when debugging persistent | |
1482 | * connections in a client; we cannot guarantee the order of http headers, | |
1483 | * but X-Request-URI is likely to be the very last header to ease use from a | |
1484 | * debugger [hdr->entries.count-1]. | |
1485 | */ | |
a9925b40 | 1486 | hdr->putStr(HDR_X_REQUEST_URI, |
1487 | http->memOjbect()->url ? http->memObject()->url : http->uri); | |
62e76326 | 1488 | |
edce4d98 | 1489 | #endif |
62e76326 | 1490 | |
45cca89d AJ |
1491 | /* Surrogate-Control requires Surrogate-Capability from upstream to pass on */ |
1492 | if ( hdr->has(HDR_SURROGATE_CONTROL) ) { | |
1493 | if (!request->header.has(HDR_SURROGATE_CAPABILITY)) { | |
1494 | hdr->delById(HDR_SURROGATE_CONTROL); | |
1495 | } | |
1496 | /* TODO: else case: drop any controls intended specifically for our surrogate ID */ | |
1497 | } | |
1498 | ||
8c01ada0 | 1499 | httpHdrMangleList(hdr, request, ROR_REPLY); |
edce4d98 | 1500 | } |
1501 | ||
1502 | ||
0655fa4d | 1503 | void |
b297bcd0 | 1504 | clientReplyContext::cloneReply() |
edce4d98 | 1505 | { |
7dc5f514 | 1506 | assert(reply == NULL); |
0655fa4d | 1507 | |
b297bcd0 | 1508 | HttpReply *rep = http->storeEntry()->getReply()->clone(); |
7dc5f514 | 1509 | |
1510 | reply = HTTPMSGLOCK(rep); | |
1511 | ||
e77d7ef0 | 1512 | if (reply->sline.protocol == PROTO_HTTP) { |
871c031f AJ |
1513 | /* RFC 2616 requires us to advertise our 1.1 version (but only on real HTTP traffic) */ |
1514 | reply->sline.version = HttpVersion(1,1); | |
e77d7ef0 | 1515 | } |
0655fa4d | 1516 | |
1517 | /* do header conversions */ | |
1518 | buildReplyHeader(); | |
edce4d98 | 1519 | } |
1520 | ||
e6ccf245 | 1521 | void |
1522 | clientReplyContext::identifyStoreObject() | |
edce4d98 | 1523 | { |
190154cf | 1524 | HttpRequest *r = http->request; |
62e76326 | 1525 | |
e6ccf245 | 1526 | if (r->flags.cachable || r->flags.internal) { |
62e76326 | 1527 | lookingforstore = 5; |
1528 | StoreEntry::getPublicByRequest (this, r); | |
559da936 | 1529 | } else { |
62e76326 | 1530 | identifyFoundObject (NullStoreEntry::getInstance()); |
559da936 | 1531 | } |
e6ccf245 | 1532 | } |
1533 | ||
7d5f62a4 AJ |
1534 | /** |
1535 | * Check state of the current StoreEntry object. | |
1536 | * to see if we can determine the final status of the request. | |
1537 | */ | |
e6ccf245 | 1538 | void |
1539 | clientReplyContext::identifyFoundObject(StoreEntry *newEntry) | |
1540 | { | |
1541 | StoreEntry *e = newEntry; | |
190154cf | 1542 | HttpRequest *r = http->request; |
62e76326 | 1543 | |
d85b8894 | 1544 | /** \li If the entry received isNull() then we ignore it. */ |
e6ccf245 | 1545 | if (e->isNull()) { |
86a2f789 | 1546 | http->storeEntry(NULL); |
e6ccf245 | 1547 | } else { |
86a2f789 | 1548 | http->storeEntry(e); |
e6ccf245 | 1549 | } |
62e76326 | 1550 | |
86a2f789 | 1551 | e = http->storeEntry(); |
a12a049a | 1552 | |
7d5f62a4 | 1553 | /* Release IP-cache entries on reload */ |
d85b8894 | 1554 | /** \li If the request has no-cache flag set or some no_cache HACK in operation we |
7d5f62a4 AJ |
1555 | * 'invalidate' the cached IP entries for this request ??? |
1556 | */ | |
a12a049a | 1557 | if (r->flags.nocache) { |
1558 | ||
1559 | #if USE_DNSSERVERS | |
62e76326 | 1560 | |
cc192b50 | 1561 | ipcacheInvalidate(r->GetHost()); |
62e76326 | 1562 | |
a12a049a | 1563 | #else |
1564 | ||
cc192b50 | 1565 | ipcacheInvalidateNegative(r->GetHost()); |
a12a049a | 1566 | |
1567 | #endif /* USE_DNSSERVERS */ | |
1568 | ||
1569 | } | |
1570 | ||
626096be | 1571 | #if USE_HTTP_VIOLATIONS |
62e76326 | 1572 | |
a12a049a | 1573 | else if (r->flags.nocache_hack) { |
1574 | ||
1575 | #if USE_DNSSERVERS | |
1576 | ||
cc192b50 | 1577 | ipcacheInvalidate(r->GetHost()); |
62e76326 | 1578 | |
a12a049a | 1579 | #else |
1580 | ||
cc192b50 | 1581 | ipcacheInvalidateNegative(r->GetHost()); |
a12a049a | 1582 | |
1583 | #endif /* USE_DNSSERVERS */ | |
1584 | ||
1585 | } | |
1586 | ||
626096be | 1587 | #endif /* USE_HTTP_VIOLATIONS */ |
edce4d98 | 1588 | #if USE_CACHE_DIGESTS |
62e76326 | 1589 | |
86a2f789 | 1590 | lookup_type = http->storeEntry() ? "HIT" : "MISS"; |
62e76326 | 1591 | |
edce4d98 | 1592 | #endif |
62e76326 | 1593 | |
86a2f789 | 1594 | if (NULL == http->storeEntry()) { |
d85b8894 | 1595 | /** \li If no StoreEntry object is current assume this object isn't in the cache set MISS*/ |
7d5f62a4 | 1596 | debugs(85, 3, "clientProcessRequest2: StoreEntry is NULL - MISS"); |
62e76326 | 1597 | http->logType = LOG_TCP_MISS; |
1598 | doGetMoreData(); | |
1599 | return; | |
edce4d98 | 1600 | } |
62e76326 | 1601 | |
edce4d98 | 1602 | if (Config.onoff.offline) { |
d85b8894 | 1603 | /** \li If we are running in offline mode set to HIT */ |
bf8fe701 | 1604 | debugs(85, 3, "clientProcessRequest2: offline HIT"); |
62e76326 | 1605 | http->logType = LOG_TCP_HIT; |
1606 | doGetMoreData(); | |
1607 | return; | |
edce4d98 | 1608 | } |
62e76326 | 1609 | |
edce4d98 | 1610 | if (http->redirect.status) { |
d85b8894 | 1611 | /** \li If redirection status is True force this to be a MISS */ |
7d5f62a4 | 1612 | debugs(85, 3, "clientProcessRequest2: redirectStatus forced StoreEntry to NULL - MISS"); |
86a2f789 | 1613 | http->storeEntry(NULL); |
62e76326 | 1614 | http->logType = LOG_TCP_MISS; |
1615 | doGetMoreData(); | |
1616 | return; | |
edce4d98 | 1617 | } |
62e76326 | 1618 | |
3900307b | 1619 | if (!e->validToSend()) { |
bf8fe701 | 1620 | debugs(85, 3, "clientProcessRequest2: !storeEntryValidToSend MISS" ); |
86a2f789 | 1621 | http->storeEntry(NULL); |
62e76326 | 1622 | http->logType = LOG_TCP_MISS; |
1623 | doGetMoreData(); | |
1624 | return; | |
edce4d98 | 1625 | } |
62e76326 | 1626 | |
edce4d98 | 1627 | if (EBIT_TEST(e->flags, ENTRY_SPECIAL)) { |
d85b8894 | 1628 | /* \li Special entries are always hits, no matter what the client says */ |
bf8fe701 | 1629 | debugs(85, 3, "clientProcessRequest2: ENTRY_SPECIAL HIT"); |
62e76326 | 1630 | http->logType = LOG_TCP_HIT; |
1631 | doGetMoreData(); | |
1632 | return; | |
edce4d98 | 1633 | } |
62e76326 | 1634 | |
edce4d98 | 1635 | if (r->flags.nocache) { |
bf8fe701 | 1636 | debugs(85, 3, "clientProcessRequest2: no-cache REFRESH MISS"); |
86a2f789 | 1637 | http->storeEntry(NULL); |
62e76326 | 1638 | http->logType = LOG_TCP_CLIENT_REFRESH_MISS; |
1639 | doGetMoreData(); | |
1640 | return; | |
edce4d98 | 1641 | } |
62e76326 | 1642 | |
bf8fe701 | 1643 | debugs(85, 3, "clientProcessRequest2: default HIT"); |
e6ccf245 | 1644 | http->logType = LOG_TCP_HIT; |
1645 | doGetMoreData(); | |
edce4d98 | 1646 | } |
1647 | ||
d85b8894 AJ |
1648 | /** |
1649 | * Request more data from the store for the client Stream | |
edce4d98 | 1650 | * This is *the* entry point to this module. |
1651 | * | |
1652 | * Preconditions: | |
d85b8894 AJ |
1653 | * - This is the head of the list. |
1654 | * - There is at least one more node. | |
1655 | * - Data context is not null | |
edce4d98 | 1656 | */ |
1657 | void | |
59a1efb2 | 1658 | clientGetMoreData(clientStreamNode * aNode, ClientHttpRequest * http) |
edce4d98 | 1659 | { |
edce4d98 | 1660 | /* Test preconditions */ |
e6ccf245 | 1661 | assert(aNode != NULL); |
1662 | assert(cbdataReferenceValid(aNode)); | |
e6ccf245 | 1663 | assert(aNode->node.prev == NULL); |
1664 | assert(aNode->node.next != NULL); | |
0655fa4d | 1665 | clientReplyContext *context = dynamic_cast<clientReplyContext *>(aNode->data.getRaw()); |
1666 | assert (context); | |
edce4d98 | 1667 | assert(context->http == http); |
1668 | ||
559da936 | 1669 | |
0655fa4d | 1670 | clientStreamNode *next = ( clientStreamNode *)aNode->node.next->data; |
62e76326 | 1671 | |
edce4d98 | 1672 | if (!context->ourNode) |
62e76326 | 1673 | context->ourNode = aNode; |
1674 | ||
e6ccf245 | 1675 | /* no cbdatareference, this is only used once, and safely */ |
edce4d98 | 1676 | if (context->flags.storelogiccomplete) { |
62e76326 | 1677 | StoreIOBuffer tempBuffer; |
1678 | tempBuffer.offset = next->readBuffer.offset + context->headers_sz; | |
1679 | tempBuffer.length = next->readBuffer.length; | |
1680 | tempBuffer.data = next->readBuffer.data; | |
1681 | ||
86a2f789 | 1682 | storeClientCopy(context->sc, http->storeEntry(), |
0655fa4d | 1683 | tempBuffer, clientReplyContext::SendMoreData, context); |
62e76326 | 1684 | return; |
edce4d98 | 1685 | } |
62e76326 | 1686 | |
edce4d98 | 1687 | if (context->http->request->method == METHOD_PURGE) { |
62e76326 | 1688 | context->purgeRequest(); |
1689 | return; | |
edce4d98 | 1690 | } |
62e76326 | 1691 | |
e18b8316 | 1692 | // OPTIONS with Max-Forwards:0 handled in clientProcessRequest() |
fc90edc3 | 1693 | |
edce4d98 | 1694 | if (context->http->request->method == METHOD_TRACE) { |
62e76326 | 1695 | if (context->http->request->max_forwards == 0) { |
0655fa4d | 1696 | context->traceReply(aNode); |
62e76326 | 1697 | return; |
1698 | } | |
1699 | ||
1700 | /* continue forwarding, not finished yet. */ | |
1701 | http->logType = LOG_TCP_MISS; | |
1702 | ||
1703 | context->doGetMoreData(); | |
edce4d98 | 1704 | } else |
62e76326 | 1705 | context->identifyStoreObject(); |
e6ccf245 | 1706 | } |
1707 | ||
1708 | void | |
1709 | clientReplyContext::doGetMoreData() | |
1710 | { | |
edce4d98 | 1711 | /* We still have to do store logic processing - vary, cache hit etc */ |
86a2f789 | 1712 | if (http->storeEntry() != NULL) { |
62e76326 | 1713 | /* someone found the object in the cache for us */ |
8bcf08e0 | 1714 | StoreIOBuffer localTempBuffer; |
34266cde | 1715 | |
3d0ac046 | 1716 | http->storeEntry()->lock(); |
62e76326 | 1717 | |
86a2f789 | 1718 | if (http->storeEntry()->mem_obj == NULL) { |
62e76326 | 1719 | /* |
1720 | * This if-block exists because we don't want to clobber | |
1721 | * a preexiting mem_obj->method value if the mem_obj | |
1722 | * already exists. For example, when a HEAD request | |
1723 | * is a cache hit for a GET response, we want to keep | |
1724 | * the method as GET. | |
1725 | */ | |
3900307b | 1726 | http->storeEntry()->createMemObject(http->uri, http->log_uri); |
7d5f62a4 | 1727 | http->storeEntry()->mem_obj->method = http->request->method; |
62e76326 | 1728 | } |
1729 | ||
86a2f789 | 1730 | sc = storeClientListAdd(http->storeEntry(), this); |
edce4d98 | 1731 | #if DELAY_POOLS |
62e76326 | 1732 | |
1733 | sc->setDelayId(DelayId::DelayClient(http)); | |
edce4d98 | 1734 | #endif |
62e76326 | 1735 | |
1736 | assert(http->logType == LOG_TCP_HIT); | |
1737 | reqofs = 0; | |
1738 | /* guarantee nothing has been sent yet! */ | |
1739 | assert(http->out.size == 0); | |
1740 | assert(http->out.offset == 0); | |
425de4c8 AJ |
1741 | |
1742 | if (Ip::Qos::TheConfig.isHitTosActive()) { | |
1743 | Ip::Qos::doTosLocalHit(http->getConn()->fd); | |
1744 | } | |
1745 | ||
1746 | if (Ip::Qos::TheConfig.isHitNfmarkActive()) { | |
1747 | Ip::Qos::doNfmarkLocalHit(http->getConn()->fd); | |
b86ab75b | 1748 | } |
425de4c8 | 1749 | |
8bcf08e0 FC |
1750 | localTempBuffer.offset = reqofs; |
1751 | localTempBuffer.length = getNextNode()->readBuffer.length; | |
1752 | localTempBuffer.data = getNextNode()->readBuffer.data; | |
1753 | storeClientCopy(sc, http->storeEntry(), localTempBuffer, CacheHit, this); | |
edce4d98 | 1754 | } else { |
62e76326 | 1755 | /* MISS CASE, http->logType is already set! */ |
0655fa4d | 1756 | processMiss(); |
edce4d98 | 1757 | } |
1758 | } | |
1759 | ||
d85b8894 | 1760 | /** The next node has removed itself from the stream. */ |
edce4d98 | 1761 | void |
59a1efb2 | 1762 | clientReplyDetach(clientStreamNode * node, ClientHttpRequest * http) |
edce4d98 | 1763 | { |
d85b8894 | 1764 | /** detach from the stream */ |
edce4d98 | 1765 | clientStreamDetach(node, http); |
1766 | } | |
1767 | ||
d85b8894 AJ |
1768 | /** |
1769 | * Accepts chunk of a http message in buf, parses prefix, filters headers and | |
edce4d98 | 1770 | * such, writes processed message to the message recipient |
1771 | */ | |
1772 | void | |
0655fa4d | 1773 | clientReplyContext::SendMoreData(void *data, StoreIOBuffer result) |
edce4d98 | 1774 | { |
e6ccf245 | 1775 | clientReplyContext *context = static_cast<clientReplyContext *>(data); |
528b2c61 | 1776 | context->sendMoreData (result); |
1777 | } | |
1778 | ||
1779 | void | |
1780 | clientReplyContext::makeThisHead() | |
1781 | { | |
1782 | /* At least, I think thats what this does */ | |
1783 | dlinkDelete(&http->active, &ClientActiveRequests); | |
1784 | dlinkAdd(http, &http->active, &ClientActiveRequests); | |
1785 | } | |
1786 | ||
1787 | bool | |
1788 | clientReplyContext::errorInStream(StoreIOBuffer const &result, size_t const &sizeToProcess)const | |
1789 | { | |
1790 | return /* aborted request */ | |
86a2f789 | 1791 | (http->storeEntry() && EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) || |
62e76326 | 1792 | /* Upstream read error */ (result.flags.error) || |
1793 | /* Upstream EOF */ (sizeToProcess == 0); | |
528b2c61 | 1794 | } |
1795 | ||
1796 | void | |
1797 | clientReplyContext::sendStreamError(StoreIOBuffer const &result) | |
1798 | { | |
d85b8894 | 1799 | /** call clientWriteComplete so the client socket gets closed |
af6a12ee | 1800 | * |
d85b8894 | 1801 | * We call into the stream, because we don't know that there is a |
528b2c61 | 1802 | * client socket! |
1803 | */ | |
26ac0430 | 1804 | debugs(88, 5, "clientReplyContext::sendStreamError: A stream error has occured, marking as complete and sending no data."); |
8bcf08e0 | 1805 | StoreIOBuffer localTempBuffer; |
528b2c61 | 1806 | flags.complete = 1; |
4ad60609 | 1807 | http->request->flags.stream_error = 1; |
8bcf08e0 | 1808 | localTempBuffer.flags.error = result.flags.error; |
528b2c61 | 1809 | clientStreamCallback((clientStreamNode*)http->client_stream.head->data, http, NULL, |
8bcf08e0 | 1810 | localTempBuffer); |
528b2c61 | 1811 | } |
1812 | ||
1813 | void | |
1814 | clientReplyContext::pushStreamData(StoreIOBuffer const &result, char *source) | |
1815 | { | |
8bcf08e0 | 1816 | StoreIOBuffer localTempBuffer; |
62e76326 | 1817 | |
528b2c61 | 1818 | if (result.length == 0) { |
bf8fe701 | 1819 | debugs(88, 5, "clientReplyContext::pushStreamData: marking request as complete due to 0 length store result"); |
62e76326 | 1820 | flags.complete = 1; |
528b2c61 | 1821 | } |
62e76326 | 1822 | |
43ae1d95 | 1823 | assert(result.offset - headers_sz == next()->readBuffer.offset); |
8bcf08e0 FC |
1824 | localTempBuffer.offset = result.offset - headers_sz; |
1825 | localTempBuffer.length = result.length; | |
62e76326 | 1826 | |
8bcf08e0 FC |
1827 | if (localTempBuffer.length) |
1828 | localTempBuffer.data = source; | |
62e76326 | 1829 | |
528b2c61 | 1830 | clientStreamCallback((clientStreamNode*)http->client_stream.head->data, http, NULL, |
8bcf08e0 | 1831 | localTempBuffer); |
528b2c61 | 1832 | } |
1833 | ||
1834 | clientStreamNode * | |
1835 | clientReplyContext::next() const | |
1836 | { | |
1837 | assert ( (clientStreamNode*)http->client_stream.head->next->data == getNextNode()); | |
1838 | return getNextNode(); | |
1839 | } | |
1840 | ||
b51aec66 | 1841 | void |
16611143 | 1842 | clientReplyContext::sendBodyTooLargeError() |
b51aec66 | 1843 | { |
b7ac5457 | 1844 | Ip::Address tmp_noaddr; |
26ac0430 | 1845 | tmp_noaddr.SetNoAddr(); // TODO: make a global const |
af0d9bca | 1846 | http->logType = LOG_TCP_DENIED_REPLY; |
16611143 | 1847 | ErrorState *err = clientBuildError(ERR_TOO_BIG, HTTP_FORBIDDEN, NULL, |
26ac0430 AJ |
1848 | http->getConn() != NULL ? http->getConn()->peer : tmp_noaddr, |
1849 | http->request); | |
16611143 | 1850 | removeClientStoreReference(&(sc), http); |
1851 | HTTPMSGUNLOCK(reply); | |
1852 | startError(err); | |
26ac0430 | 1853 | |
b51aec66 | 1854 | } |
1855 | ||
79c8035e AR |
1856 | /// send 412 (Precondition Failed) to client |
1857 | void | |
1858 | clientReplyContext::sendPreconditionFailedError() | |
1859 | { | |
1860 | http->logType = LOG_TCP_HIT; | |
1861 | ErrorState *const err = | |
1862 | clientBuildError(ERR_PRECONDITION_FAILED, HTTP_PRECONDITION_FAILED, | |
1863 | NULL, http->getConn()->peer, http->request); | |
1864 | removeClientStoreReference(&sc, http); | |
1865 | HTTPMSGUNLOCK(reply); | |
1866 | startError(err); | |
1867 | } | |
1868 | ||
4993f571 | 1869 | void |
1870 | clientReplyContext::processReplyAccess () | |
1871 | { | |
b50e327b | 1872 | /* NP: this should probably soft-fail to a zero-sized-reply error ?? */ |
7dc5f514 | 1873 | assert(reply); |
b50e327b AJ |
1874 | |
1875 | /** Don't block our own responses or HTTP status messages */ | |
16611143 | 1876 | if (http->logType == LOG_TCP_DENIED || |
26ac0430 AJ |
1877 | http->logType == LOG_TCP_DENIED_REPLY || |
1878 | alwaysAllowResponse(reply->sline.status)) { | |
acbf9428 | 1879 | headers_sz = reply->hdr_sz; |
26ac0430 AJ |
1880 | processReplyAccessResult(1); |
1881 | return; | |
230a8cc6 | 1882 | } |
26ac0430 | 1883 | |
b50e327b | 1884 | /** Check for reply to big error */ |
16611143 | 1885 | if (reply->expectedBodyTooLarge(*http->request)) { |
1886 | sendBodyTooLargeError(); | |
62e76326 | 1887 | return; |
1888 | } | |
1889 | ||
7dc5f514 | 1890 | headers_sz = reply->hdr_sz; |
230a8cc6 | 1891 | |
b50e327b | 1892 | /** check for absent access controls (permit by default) */ |
230a8cc6 | 1893 | if (!Config.accessList.reply) { |
26ac0430 AJ |
1894 | processReplyAccessResult(1); |
1895 | return; | |
230a8cc6 | 1896 | } |
1897 | ||
b50e327b | 1898 | /** Process http_reply_access lists */ |
127dce76 AR |
1899 | ACLFilledChecklist *replyChecklist = |
1900 | clientAclChecklistCreate(Config.accessList.reply, http); | |
7dc5f514 | 1901 | replyChecklist->reply = HTTPMSGLOCK(reply); |
0655fa4d | 1902 | replyChecklist->nonBlockingCheck(ProcessReplyAccessResult, this); |
4993f571 | 1903 | } |
1904 | ||
1905 | void | |
0655fa4d | 1906 | clientReplyContext::ProcessReplyAccessResult (int rv, void *voidMe) |
4993f571 | 1907 | { |
1908 | clientReplyContext *me = static_cast<clientReplyContext *>(voidMe); | |
0655fa4d | 1909 | me->processReplyAccessResult(rv); |
4993f571 | 1910 | } |
1911 | ||
1912 | void | |
0655fa4d | 1913 | clientReplyContext::processReplyAccessResult(bool accessAllowed) |
4993f571 | 1914 | { |
26ac0430 AJ |
1915 | debugs(88, 2, "The reply for " << RequestMethodStr(http->request->method) |
1916 | << " " << http->uri << " is " | |
1917 | << ( accessAllowed ? "ALLOWED" : "DENIED") | |
1918 | << ", because it matched '" | |
bf8fe701 | 1919 | << (AclMatchedName ? AclMatchedName : "NO ACL's") << "'" ); |
62e76326 | 1920 | |
230a8cc6 | 1921 | if (!accessAllowed) { |
62e76326 | 1922 | ErrorState *err; |
0185bd6f | 1923 | err_type page_id; |
9ce7856a | 1924 | page_id = aclGetDenyInfoPage(&Config.denyInfoList, AclMatchedName, 1); |
0185bd6f | 1925 | |
c466369c | 1926 | http->logType = LOG_TCP_DENIED_REPLY; |
1927 | ||
0185bd6f | 1928 | if (page_id == ERR_NONE) |
1929 | page_id = ERR_ACCESS_DENIED; | |
1930 | ||
b7ac5457 | 1931 | Ip::Address tmp_noaddr; |
26ac0430 | 1932 | tmp_noaddr.SetNoAddr(); |
cc192b50 | 1933 | err = clientBuildError(page_id, HTTP_FORBIDDEN, NULL, |
26ac0430 AJ |
1934 | http->getConn() != NULL ? http->getConn()->peer : tmp_noaddr, |
1935 | http->request); | |
0185bd6f | 1936 | |
86a2f789 | 1937 | removeClientStoreReference(&sc, http); |
0185bd6f | 1938 | |
7dc5f514 | 1939 | HTTPMSGUNLOCK(reply); |
0185bd6f | 1940 | |
3c2c1d31 | 1941 | startError(err); |
1942 | ||
0185bd6f | 1943 | |
62e76326 | 1944 | return; |
1945 | } | |
1946 | ||
0976f8db | 1947 | /* Ok, the reply is allowed, */ |
1948 | http->loggingEntry(http->storeEntry()); | |
1949 | ||
7dc5f514 | 1950 | ssize_t body_size = reqofs - reply->hdr_sz; |
b297bcd0 | 1951 | if (body_size < 0) { |
26ac0430 AJ |
1952 | reqofs = reply->hdr_sz; |
1953 | body_size = 0; | |
b297bcd0 | 1954 | } |
0976f8db | 1955 | |
bf8fe701 | 1956 | debugs(88, 3, "clientReplyContext::sendMoreData: Appending " << |
1957 | (int) body_size << " bytes after " << reply->hdr_sz << | |
1958 | " bytes of headers"); | |
0976f8db | 1959 | |
f41735ea | 1960 | #if USE_SQUID_ESI |
62e76326 | 1961 | |
7dc5f514 | 1962 | if (http->flags.accel && reply->sline.status != HTTP_FORBIDDEN && |
1963 | !alwaysAllowResponse(reply->sline.status) && | |
1964 | esiEnableProcessing(reply)) { | |
bf8fe701 | 1965 | debugs(88, 2, "Enabling ESI processing for " << http->uri); |
43ae1d95 | 1966 | clientStreamInsertHead(&http->client_stream, esiStreamRead, |
1967 | esiProcessStream, esiStreamDetach, esiStreamStatus, NULL); | |
1968 | } | |
1969 | ||
5ef38a13 | 1970 | #endif |
1971 | ||
62e76326 | 1972 | if (http->request->method == METHOD_HEAD) { |
1973 | /* do not forward body for HEAD replies */ | |
1974 | body_size = 0; | |
1975 | http->flags.done_copying = 1; | |
1976 | flags.complete = 1; | |
1977 | } | |
1978 | ||
1979 | assert (!flags.headersSent); | |
1980 | flags.headersSent = true; | |
1981 | ||
8bcf08e0 | 1982 | StoreIOBuffer localTempBuffer; |
62e76326 | 1983 | char *buf = next()->readBuffer.data; |
e85eb4e1 | 1984 | char *body_buf = buf + reply->hdr_sz; |
62e76326 | 1985 | |
49ea0125 | 1986 | //Server side may disable ranges under some circumstances. |
1987 | ||
1988 | if ((!http->request->range)) | |
1989 | next()->readBuffer.offset = 0; | |
1990 | ||
e85eb4e1 AJ |
1991 | body_buf -= next()->readBuffer.offset; |
1992 | ||
62e76326 | 1993 | if (next()->readBuffer.offset != 0) { |
1994 | if (next()->readBuffer.offset > body_size) { | |
2324cda2 | 1995 | /* Can't use any of the body we received. send nothing */ |
8bcf08e0 FC |
1996 | localTempBuffer.length = 0; |
1997 | localTempBuffer.data = NULL; | |
62e76326 | 1998 | } else { |
8bcf08e0 FC |
1999 | localTempBuffer.length = body_size - next()->readBuffer.offset; |
2000 | localTempBuffer.data = body_buf + next()->readBuffer.offset; | |
62e76326 | 2001 | } |
2002 | } else { | |
8bcf08e0 FC |
2003 | localTempBuffer.length = body_size; |
2004 | localTempBuffer.data = body_buf; | |
62e76326 | 2005 | } |
2006 | ||
0655fa4d | 2007 | /* TODO??: move the data in the buffer back by the request header size */ |
62e76326 | 2008 | clientStreamCallback((clientStreamNode *)http->client_stream.head->data, |
8bcf08e0 | 2009 | http, reply, localTempBuffer); |
62e76326 | 2010 | |
2011 | return; | |
4993f571 | 2012 | } |
2013 | ||
528b2c61 | 2014 | void |
2015 | clientReplyContext::sendMoreData (StoreIOBuffer result) | |
2016 | { | |
50c09fc4 | 2017 | if (deleting) |
2018 | return; | |
2019 | ||
86a2f789 | 2020 | StoreEntry *entry = http->storeEntry(); |
50c09fc4 | 2021 | |
1cf238db | 2022 | ConnStateData * conn = http->getConn(); |
50c09fc4 | 2023 | |
94a396a3 | 2024 | int fd = conn != NULL ? conn->fd : -1; |
9af2f95b AR |
2025 | if (fd >= 0 && fd_table[fd].closing()) { // too late, our conn is closing |
2026 | // TODO: should we also quit when fd is negative? | |
2027 | debugs(33,3, HERE << "not sending more data to a closing FD " << fd); | |
2028 | return; | |
2029 | } | |
50c09fc4 | 2030 | |
528b2c61 | 2031 | char *buf = next()->readBuffer.data; |
50c09fc4 | 2032 | |
c8be6d7b | 2033 | char *body_buf = buf; |
edce4d98 | 2034 | |
da33c835 | 2035 | if (buf != result.data) { |
62e76326 | 2036 | /* we've got to copy some data */ |
2037 | assert(result.length <= next()->readBuffer.length); | |
2038 | xmemcpy(buf, result.data, result.length); | |
2039 | body_buf = buf; | |
edce4d98 | 2040 | } |
62e76326 | 2041 | |
26ac0430 | 2042 | if (reqofs==0 && !logTypeIsATcpHit(http->logType)) { |
9af2f95b | 2043 | assert(fd >= 0); // the beginning of this method implies fd may be -1 |
425de4c8 AJ |
2044 | if (Ip::Qos::TheConfig.isHitTosActive()) { |
2045 | Ip::Qos::doTosLocalMiss(fd, http->request->hier.code); | |
2046 | } | |
2047 | if (Ip::Qos::TheConfig.isHitNfmarkActive()) { | |
2048 | Ip::Qos::doNfmarkLocalMiss(fd, http->request->hier.code); | |
452bb8e2 | 2049 | } |
7172612f | 2050 | } |
7172612f | 2051 | |
ab9c533b HN |
2052 | /* We've got the final data to start pushing... */ |
2053 | flags.storelogiccomplete = 1; | |
2054 | ||
4993f571 | 2055 | reqofs += result.length; |
2056 | ||
2057 | assert(reqofs <= HTTP_REQBUF_SZ || flags.headersSent); | |
62e76326 | 2058 | |
edce4d98 | 2059 | assert(http->request != NULL); |
62e76326 | 2060 | |
edce4d98 | 2061 | /* ESI TODO: remove this assert once everything is stable */ |
2062 | assert(http->client_stream.head->data | |
62e76326 | 2063 | && cbdataReferenceValid(http->client_stream.head->data)); |
528b2c61 | 2064 | |
2065 | makeThisHead(); | |
62e76326 | 2066 | |
bf8fe701 | 2067 | debugs(88, 5, "clientReplyContext::sendMoreData: " << http->uri << ", " << |
47f6e231 | 2068 | reqofs << " bytes (" << result.length << |
bf8fe701 | 2069 | " new bytes)"); |
47f6e231 | 2070 | debugs(88, 5, "clientReplyContext::sendMoreData:" |
26ac0430 AJ |
2071 | " FD " << fd << |
2072 | " '" << entry->url() << "'" << | |
2073 | " out.offset=" << http->out.offset); | |
528b2c61 | 2074 | |
edce4d98 | 2075 | /* update size of the request */ |
4993f571 | 2076 | reqsize = reqofs; |
62e76326 | 2077 | |
4993f571 | 2078 | if (errorInStream(result, reqofs)) { |
62e76326 | 2079 | sendStreamError(result); |
2080 | return; | |
edce4d98 | 2081 | } |
528b2c61 | 2082 | |
2083 | if (flags.headersSent) { | |
62e76326 | 2084 | pushStreamData (result, buf); |
2085 | return; | |
edce4d98 | 2086 | } |
62e76326 | 2087 | |
b297bcd0 | 2088 | cloneReply(); |
21b92762 | 2089 | |
b297bcd0 | 2090 | /* handle headers */ |
21b92762 | 2091 | |
b297bcd0 | 2092 | if (Config.onoff.log_mime_hdrs) { |
26ac0430 | 2093 | size_t k; |
43ae1d95 | 2094 | |
26ac0430 AJ |
2095 | if ((k = headersEnd(buf, reqofs))) { |
2096 | safe_free(http->al.headers.reply); | |
2097 | http->al.headers.reply = (char *)xcalloc(k + 1, 1); | |
2098 | xstrncpy(http->al.headers.reply, buf, k); | |
2099 | } | |
edce4d98 | 2100 | } |
b297bcd0 HN |
2101 | |
2102 | holdingBuffer = result; | |
2103 | processReplyAccess(); | |
2104 | return; | |
edce4d98 | 2105 | } |
2106 | ||
62e76326 | 2107 | |
edce4d98 | 2108 | |
2109 | /* Using this breaks the client layering just a little! | |
2110 | */ | |
0655fa4d | 2111 | void |
8bcf08e0 | 2112 | clientReplyContext::createStoreEntry(const HttpRequestMethod& m, request_flags reqFlags) |
edce4d98 | 2113 | { |
0655fa4d | 2114 | assert(http != NULL); |
edce4d98 | 2115 | /* |
2116 | * For erroneous requests, we might not have a h->request, | |
2117 | * so make a fake one. | |
2118 | */ | |
62e76326 | 2119 | |
0655fa4d | 2120 | if (http->request == NULL) |
6dd9f4bd | 2121 | http->request = HTTPMSGLOCK(new HttpRequest(m, PROTO_NONE, null_string)); |
62e76326 | 2122 | |
8bcf08e0 | 2123 | StoreEntry *e = storeCreateEntry(http->uri, http->log_uri, reqFlags, m); |
62e76326 | 2124 | |
0655fa4d | 2125 | sc = storeClientListAdd(e, this); |
62e76326 | 2126 | |
edce4d98 | 2127 | #if DELAY_POOLS |
62e76326 | 2128 | |
0655fa4d | 2129 | sc->setDelayId(DelayId::DelayClient(http)); |
62e76326 | 2130 | |
edce4d98 | 2131 | #endif |
62e76326 | 2132 | |
0655fa4d | 2133 | reqofs = 0; |
62e76326 | 2134 | |
0655fa4d | 2135 | reqsize = 0; |
62e76326 | 2136 | |
edce4d98 | 2137 | /* I don't think this is actually needed! -- adrian */ |
0655fa4d | 2138 | /* http->reqbuf = http->norm_reqbuf; */ |
2139 | // assert(http->reqbuf == http->norm_reqbuf); | |
edce4d98 | 2140 | /* The next line is illegal because we don't know if the client stream |
26ac0430 | 2141 | * buffers have been set up |
edce4d98 | 2142 | */ |
0655fa4d | 2143 | // storeClientCopy(http->sc, e, 0, HTTP_REQBUF_SZ, http->reqbuf, |
2144 | // SendMoreData, this); | |
edce4d98 | 2145 | /* So, we mark the store logic as complete */ |
8bcf08e0 | 2146 | flags.storelogiccomplete = 1; |
62e76326 | 2147 | |
edce4d98 | 2148 | /* and get the caller to request a read, from whereever they are */ |
62e76326 | 2149 | /* NOTE: after ANY data flows down the pipe, even one step, |
26ac0430 | 2150 | * this function CAN NOT be used to manage errors |
edce4d98 | 2151 | */ |
86a2f789 | 2152 | http->storeEntry(e); |
edce4d98 | 2153 | } |
2154 | ||
2155 | ErrorState * | |
2156 | clientBuildError(err_type page_id, http_status status, char const *url, | |
b7ac5457 | 2157 | Ip::Address &src_addr, HttpRequest * request) |
edce4d98 | 2158 | { |
2cc81f1f | 2159 | ErrorState *err = errorCon(page_id, status, request); |
cc192b50 | 2160 | err->src_addr = src_addr; |
62e76326 | 2161 | |
edce4d98 | 2162 | if (url) |
62e76326 | 2163 | err->url = xstrdup(url); |
2164 | ||
edce4d98 | 2165 | return err; |
2166 | } |