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edce4d98 | 1 | /* |
edce4d98 | 2 | * DEBUG: section 88 Client-side Reply Routines |
3 | * AUTHOR: Robert Collins (Originally Duane Wessels in client_side.c) | |
4 | * | |
5 | * SQUID Web Proxy Cache http://www.squid-cache.org/ | |
6 | * ---------------------------------------------------------- | |
7 | * | |
8 | * Squid is the result of efforts by numerous individuals from | |
9 | * the Internet community; see the CONTRIBUTORS file for full | |
10 | * details. Many organizations have provided support for Squid's | |
11 | * development; see the SPONSORS file for full details. Squid is | |
12 | * Copyrighted (C) 2001 by the Regents of the University of | |
13 | * California; see the COPYRIGHT file for full details. Squid | |
14 | * incorporates software developed and/or copyrighted by other | |
15 | * sources; see the CREDITS file for full details. | |
16 | * | |
17 | * This program is free software; you can redistribute it and/or modify | |
18 | * it under the terms of the GNU General Public License as published by | |
19 | * the Free Software Foundation; either version 2 of the License, or | |
20 | * (at your option) any later version. | |
26ac0430 | 21 | * |
edce4d98 | 22 | * This program is distributed in the hope that it will be useful, |
23 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
24 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
25 | * GNU General Public License for more details. | |
26ac0430 | 26 | * |
edce4d98 | 27 | * You should have received a copy of the GNU General Public License |
28 | * along with this program; if not, write to the Free Software | |
29 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. | |
30 | * | |
31 | */ | |
f7f3304a | 32 | #include "squid.h" |
b7ac5457 AJ |
33 | #include "acl/FilledChecklist.h" |
34 | #include "acl/Gadgets.h" | |
65d448bc | 35 | #include "anyp/PortCfg.h" |
0655fa4d | 36 | #include "client_side_reply.h" |
b7ac5457 | 37 | #include "errorpage.h" |
46017fdd | 38 | #include "ETag.h" |
c4ad1349 | 39 | #include "fd.h" |
7172612f | 40 | #include "fde.h" |
31971e6a | 41 | #include "format/Token.h" |
eb13c21e | 42 | #include "FwdState.h" |
582c2af2 FC |
43 | #include "globals.h" |
44 | #include "globals.h" | |
a5bac1d2 | 45 | #include "HttpHeaderTools.h" |
b7ac5457 AJ |
46 | #include "HttpReply.h" |
47 | #include "HttpRequest.h" | |
48 | #include "ip/QosConfig.h" | |
714e68b7 | 49 | #include "ipcache.h" |
1c7ae5ff | 50 | #include "log/access_log.h" |
b7ac5457 | 51 | #include "MemObject.h" |
b6149797 | 52 | #include "mime_header.h" |
f0ba2534 | 53 | #include "neighbors.h" |
c6f15d40 | 54 | #include "refresh.h" |
f206b652 | 55 | #include "RequestFlags.h" |
4d5904f7 | 56 | #include "SquidConfig.h" |
985c86bc | 57 | #include "SquidTime.h" |
b7ac5457 | 58 | #include "Store.h" |
28204b3b | 59 | #include "StrList.h" |
4e540555 | 60 | #include "tools.h" |
b1bd952a | 61 | #include "URL.h" |
582c2af2 FC |
62 | #if USE_AUTH |
63 | #include "auth/UserRequest.h" | |
64 | #endif | |
65 | #if USE_DELAY_POOLS | |
66 | #include "DelayPools.h" | |
67 | #endif | |
68 | #if USE_SQUID_ESI | |
69 | #include "esi/Esi.h" | |
70 | #endif | |
e6ccf245 | 71 | |
3e4f6092 FC |
72 | #include <memory> |
73 | ||
0655fa4d | 74 | CBDATA_CLASS_INIT(clientReplyContext); |
edce4d98 | 75 | |
edce4d98 | 76 | /* Local functions */ |
e6ccf245 | 77 | extern "C" CSS clientReplyStatus; |
955394ce | 78 | ErrorState *clientBuildError(err_type, Http::StatusCode, char const *, Ip::Address &, HttpRequest *); |
edce4d98 | 79 | |
edce4d98 | 80 | /* privates */ |
edce4d98 | 81 | |
0655fa4d | 82 | clientReplyContext::~clientReplyContext() |
edce4d98 | 83 | { |
50c09fc4 | 84 | deleting = true; |
85 | /* This may trigger a callback back into SendMoreData as the cbdata | |
86 | * is still valid | |
87 | */ | |
86a2f789 | 88 | removeClientStoreReference(&sc, http); |
edce4d98 | 89 | /* old_entry might still be set if we didn't yet get the reply |
0655fa4d | 90 | * code in HandleIMSReply() */ |
91 | removeStoreReference(&old_sc, &old_entry); | |
92 | safe_free(tempBuffer.data); | |
93 | cbdataReferenceDone(http); | |
2b7d324b | 94 | HTTPMSGUNLOCK(reply); |
edce4d98 | 95 | } |
96 | ||
59a1efb2 | 97 | clientReplyContext::clientReplyContext(ClientHttpRequest *clientContext) : http (cbdataReference(clientContext)), old_entry (NULL), old_sc(NULL), deleting(false) |
0655fa4d | 98 | {} |
edce4d98 | 99 | |
a5c8d64d AJ |
100 | /** Create an error in the store awaiting the client side to read it. |
101 | * | |
102 | * This may be better placed in the clientStream logic, but it has not been | |
0655fa4d | 103 | * relocated there yet |
104 | */ | |
edce4d98 | 105 | void |
0655fa4d | 106 | clientReplyContext::setReplyToError( |
955394ce | 107 | err_type err, Http::StatusCode status, const HttpRequestMethod& method, char const *uri, |
b7ac5457 | 108 | Ip::Address &addr, HttpRequest * failedrequest, const char *unparsedrequest, |
2f1431ea | 109 | #if USE_AUTH |
c7baff40 | 110 | Auth::UserRequest::Pointer auth_user_request |
2f1431ea | 111 | #else |
9d2b8284 | 112 | void* |
2f1431ea | 113 | #endif |
74174c03 | 114 | ) |
edce4d98 | 115 | { |
a33a428a | 116 | ErrorState *errstate = clientBuildError(err, status, uri, addr, failedrequest); |
62e76326 | 117 | |
edce4d98 | 118 | if (unparsedrequest) |
62e76326 | 119 | errstate->request_hdrs = xstrdup(unparsedrequest); |
edce4d98 | 120 | |
8eb0a7ee CT |
121 | #if USE_AUTH |
122 | errstate->auth_user_request = auth_user_request; | |
123 | #endif | |
124 | setReplyToError(method, errstate); | |
125 | } | |
126 | ||
127 | void clientReplyContext::setReplyToError(const HttpRequestMethod& method, ErrorState *errstate) | |
128 | { | |
955394ce | 129 | if (errstate->httpStatus == Http::scNotImplemented && http->request) |
62e76326 | 130 | /* prevent confusion over whether we default to persistent or not */ |
e857372a | 131 | http->request->flags.proxyKeepalive = false; |
62e76326 | 132 | |
41ebd397 | 133 | http->al->http.code = errstate->httpStatus; |
edce4d98 | 134 | |
f0baf149 AR |
135 | if (http->request) |
136 | http->request->ignoreRange("responding with a Squid-generated error"); | |
137 | ||
f206b652 | 138 | createStoreEntry(method, RequestFlags()); |
edce4d98 | 139 | assert(errstate->callback_data == NULL); |
86a2f789 | 140 | errorAppendEntry(http->storeEntry(), errstate); |
edce4d98 | 141 | /* Now the caller reads to get this */ |
142 | } | |
143 | ||
f0baf149 AR |
144 | // Assumes that the entry contains an error response without Content-Range. |
145 | // To use with regular entries, make HTTP Range header removal conditional. | |
146 | void clientReplyContext::setReplyToStoreEntry(StoreEntry *entry, const char *reason) | |
061bbdec | 147 | { |
1bfe9ade | 148 | entry->lock("clientReplyContext::setReplyToStoreEntry"); // removeClientStoreReference() unlocks |
061bbdec CT |
149 | sc = storeClientListAdd(entry, this); |
150 | #if USE_DELAY_POOLS | |
151 | sc->setDelayId(DelayId::DelayClient(http)); | |
152 | #endif | |
153 | reqofs = 0; | |
154 | reqsize = 0; | |
f0baf149 AR |
155 | if (http->request) |
156 | http->request->ignoreRange(reason); | |
061bbdec CT |
157 | flags.storelogiccomplete = 1; |
158 | http->storeEntry(entry); | |
159 | } | |
160 | ||
edce4d98 | 161 | void |
0655fa4d | 162 | clientReplyContext::removeStoreReference(store_client ** scp, |
163 | StoreEntry ** ep) | |
edce4d98 | 164 | { |
165 | StoreEntry *e; | |
e4ae841b | 166 | store_client *sc_tmp = *scp; |
62e76326 | 167 | |
edce4d98 | 168 | if ((e = *ep) != NULL) { |
62e76326 | 169 | *ep = NULL; |
e4ae841b | 170 | storeUnregister(sc_tmp, e, this); |
62e76326 | 171 | *scp = NULL; |
1bfe9ade | 172 | e->unlock("clientReplyContext::removeStoreReference"); |
edce4d98 | 173 | } |
174 | } | |
175 | ||
86a2f789 | 176 | void |
8bcf08e0 | 177 | clientReplyContext::removeClientStoreReference(store_client **scp, ClientHttpRequest *aHttpRequest) |
86a2f789 | 178 | { |
8bcf08e0 | 179 | StoreEntry *reference = aHttpRequest->storeEntry(); |
86a2f789 | 180 | removeStoreReference(scp, &reference); |
8bcf08e0 | 181 | aHttpRequest->storeEntry(reference); |
86a2f789 | 182 | } |
183 | ||
edce4d98 | 184 | void |
0655fa4d | 185 | clientReplyContext::saveState() |
edce4d98 | 186 | { |
e6ccf245 | 187 | assert(old_sc == NULL); |
bf8fe701 | 188 | debugs(88, 3, "clientReplyContext::saveState: saving store context"); |
86a2f789 | 189 | old_entry = http->storeEntry(); |
e6ccf245 | 190 | old_sc = sc; |
191 | old_reqsize = reqsize; | |
192 | tempBuffer.offset = reqofs; | |
edce4d98 | 193 | /* Prevent accessing the now saved entries */ |
86a2f789 | 194 | http->storeEntry(NULL); |
e6ccf245 | 195 | sc = NULL; |
196 | reqsize = 0; | |
197 | reqofs = 0; | |
edce4d98 | 198 | } |
199 | ||
200 | void | |
0655fa4d | 201 | clientReplyContext::restoreState() |
edce4d98 | 202 | { |
e6ccf245 | 203 | assert(old_sc != NULL); |
bf8fe701 | 204 | debugs(88, 3, "clientReplyContext::restoreState: Restoring store context"); |
86a2f789 | 205 | removeClientStoreReference(&sc, http); |
206 | http->storeEntry(old_entry); | |
e6ccf245 | 207 | sc = old_sc; |
208 | reqsize = old_reqsize; | |
209 | reqofs = tempBuffer.offset; | |
edce4d98 | 210 | /* Prevent accessed the old saved entries */ |
0655fa4d | 211 | old_entry = NULL; |
e6ccf245 | 212 | old_sc = NULL; |
213 | old_reqsize = 0; | |
214 | tempBuffer.offset = 0; | |
c8be6d7b | 215 | } |
216 | ||
217 | void | |
0655fa4d | 218 | clientReplyContext::startError(ErrorState * err) |
c8be6d7b | 219 | { |
f206b652 | 220 | createStoreEntry(http->request->method, RequestFlags()); |
0655fa4d | 221 | triggerInitialStoreRead(); |
86a2f789 | 222 | errorAppendEntry(http->storeEntry(), err); |
edce4d98 | 223 | } |
224 | ||
e6ccf245 | 225 | clientStreamNode * |
528b2c61 | 226 | clientReplyContext::getNextNode() const |
e6ccf245 | 227 | { |
62e76326 | 228 | return (clientStreamNode *)ourNode->node.next->data; |
e6ccf245 | 229 | } |
230 | ||
62e76326 | 231 | /* This function is wrong - the client parameters don't include the |
528b2c61 | 232 | * header offset |
233 | */ | |
c8be6d7b | 234 | void |
0655fa4d | 235 | clientReplyContext::triggerInitialStoreRead() |
c8be6d7b | 236 | { |
0655fa4d | 237 | /* when confident, 0 becomes reqofs, and then this factors into |
26ac0430 | 238 | * startSendProcess |
528b2c61 | 239 | */ |
0655fa4d | 240 | assert(reqofs == 0); |
8bcf08e0 FC |
241 | StoreIOBuffer localTempBuffer (next()->readBuffer.length, 0, next()->readBuffer.data); |
242 | storeClientCopy(sc, http->storeEntry(), localTempBuffer, SendMoreData, this); | |
c8be6d7b | 243 | } |
edce4d98 | 244 | |
245 | /* there is an expired entry in the store. | |
246 | * setup a temporary buffer area and perform an IMS to the origin | |
247 | */ | |
0655fa4d | 248 | void |
249 | clientReplyContext::processExpired() | |
edce4d98 | 250 | { |
a8a0b1c2 | 251 | const char *url = storeId(); |
edce4d98 | 252 | StoreEntry *entry = NULL; |
bf8fe701 | 253 | debugs(88, 3, "clientReplyContext::processExpired: '" << http->uri << "'"); |
86a2f789 | 254 | assert(http->storeEntry()->lastmod >= 0); |
edce4d98 | 255 | /* |
256 | * check if we are allowed to contact other servers | |
26ac0430 | 257 | * @?@: Instead of a 504 (Gateway Timeout) reply, we may want to return |
edce4d98 | 258 | * a stale entry *if* it matches client requirements |
259 | */ | |
62e76326 | 260 | |
0655fa4d | 261 | if (http->onlyIfCached()) { |
262 | processOnlyIfCachedMiss(); | |
62e76326 | 263 | return; |
edce4d98 | 264 | } |
62e76326 | 265 | |
e857372a | 266 | http->request->flags.refresh = true; |
edce4d98 | 267 | #if STORE_CLIENT_LIST_DEBUG |
c8be6d7b | 268 | /* Prevent a race with the store client memory free routines |
edce4d98 | 269 | */ |
0655fa4d | 270 | assert(storeClientIsThisAClient(sc, this)); |
edce4d98 | 271 | #endif |
272 | /* Prepare to make a new temporary request */ | |
0655fa4d | 273 | saveState(); |
edce4d98 | 274 | entry = storeCreateEntry(url, |
62e76326 | 275 | http->log_uri, http->request->flags, http->request->method); |
34266cde | 276 | /* NOTE, don't call StoreEntry->lock(), storeCreateEntry() does it */ |
0655fa4d | 277 | sc = storeClientListAdd(entry, this); |
9a0a18de | 278 | #if USE_DELAY_POOLS |
edce4d98 | 279 | /* delay_id is already set on original store client */ |
0655fa4d | 280 | sc->setDelayId(DelayId::DelayClient(http)); |
edce4d98 | 281 | #endif |
62e76326 | 282 | |
0655fa4d | 283 | http->request->lastmod = old_entry->lastmod; |
46017fdd CT |
284 | |
285 | if (!http->request->header.has(HDR_IF_NONE_MATCH)) { | |
286 | ETag etag = {NULL, -1}; // TODO: make that a default ETag constructor | |
287 | if (old_entry->hasEtag(etag) && !etag.weak) | |
288 | http->request->etag = etag.str; | |
289 | } | |
290 | ||
4a7a3d56 | 291 | debugs(88, 5, "clientReplyContext::processExpired : lastmod " << entry->lastmod ); |
86a2f789 | 292 | http->storeEntry(entry); |
c8be6d7b | 293 | assert(http->out.offset == 0); |
9174ba3d | 294 | assert(http->request->clientConnectionManager == http->getConn()); |
655daa06 | 295 | |
b2d22df6 | 296 | /* |
297 | * A refcounted pointer so that FwdState stays around as long as | |
298 | * this clientReplyContext does | |
299 | */ | |
73c36fd9 | 300 | Comm::ConnectionPointer conn = http->getConn() != NULL ? http->getConn()->clientConnection : NULL; |
4bf68cfa | 301 | FwdState::Start(conn, http->storeEntry(), http->request, http->al); |
62e76326 | 302 | |
edce4d98 | 303 | /* Register with storage manager to receive updates when data comes in. */ |
62e76326 | 304 | |
edce4d98 | 305 | if (EBIT_TEST(entry->flags, ENTRY_ABORTED)) |
fa84c01d | 306 | debugs(88, DBG_CRITICAL, "clientReplyContext::processExpired: Found ENTRY_ABORTED object"); |
62e76326 | 307 | |
c8be6d7b | 308 | { |
62e76326 | 309 | /* start counting the length from 0 */ |
8bcf08e0 FC |
310 | StoreIOBuffer localTempBuffer(HTTP_REQBUF_SZ, 0, tempbuf); |
311 | storeClientCopy(sc, entry, localTempBuffer, HandleIMSReply, this); | |
edce4d98 | 312 | } |
313 | } | |
314 | ||
528b2c61 | 315 | void |
316 | clientReplyContext::sendClientUpstreamResponse() | |
317 | { | |
318 | StoreIOBuffer tempresult; | |
0655fa4d | 319 | removeStoreReference(&old_sc, &old_entry); |
2324cda2 | 320 | /* here the data to send is the data we just received */ |
528b2c61 | 321 | tempBuffer.offset = 0; |
322 | old_reqsize = 0; | |
0655fa4d | 323 | /* sendMoreData tracks the offset as well. |
528b2c61 | 324 | * Force it back to zero */ |
325 | reqofs = 0; | |
86a2f789 | 326 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 327 | /* TODO: provide sendMoreData with the ready parsed reply */ |
528b2c61 | 328 | tempresult.length = reqsize; |
329 | tempresult.data = tempbuf; | |
0655fa4d | 330 | sendMoreData(tempresult); |
528b2c61 | 331 | } |
332 | ||
edce4d98 | 333 | void |
0655fa4d | 334 | clientReplyContext::HandleIMSReply(void *data, StoreIOBuffer result) |
edce4d98 | 335 | { |
e6ccf245 | 336 | clientReplyContext *context = (clientReplyContext *)data; |
0655fa4d | 337 | context->handleIMSReply(result); |
338 | } | |
62e76326 | 339 | |
0655fa4d | 340 | void |
341 | clientReplyContext::sendClientOldEntry() | |
342 | { | |
343 | /* Get the old request back */ | |
344 | restoreState(); | |
345 | /* here the data to send is in the next nodes buffers already */ | |
86a2f789 | 346 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 347 | /* sendMoreData tracks the offset as well. |
348 | * Force it back to zero */ | |
349 | reqofs = 0; | |
350 | StoreIOBuffer tempresult (reqsize, reqofs, next()->readBuffer.data); | |
351 | sendMoreData(tempresult); | |
352 | } | |
62e76326 | 353 | |
1d7ab0f4 | 354 | /* This is the workhorse of the HandleIMSReply callback. |
355 | * | |
356 | * It is called when we've got data back from the origin following our | |
357 | * IMS request to revalidate a stale entry. | |
358 | */ | |
0655fa4d | 359 | void |
1d7ab0f4 | 360 | clientReplyContext::handleIMSReply(StoreIOBuffer result) |
0655fa4d | 361 | { |
1d7ab0f4 | 362 | if (deleting) |
363 | return; | |
62e76326 | 364 | |
bf8fe701 | 365 | debugs(88, 3, "handleIMSReply: " << http->storeEntry()->url() << ", " << (long unsigned) result.length << " bytes" ); |
62e76326 | 366 | |
1d7ab0f4 | 367 | if (http->storeEntry() == NULL) |
368 | return; | |
07947ad8 | 369 | |
1d7ab0f4 | 370 | if (result.flags.error && !EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) |
371 | return; | |
62e76326 | 372 | |
1d7ab0f4 | 373 | /* update size of the request */ |
374 | reqsize = result.length + reqofs; | |
62e76326 | 375 | |
9b769c67 | 376 | const Http::StatusCode status = http->storeEntry()->getReply()->sline.status(); |
62e76326 | 377 | |
1d7ab0f4 | 378 | // request to origin was aborted |
379 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) { | |
bf8fe701 | 380 | debugs(88, 3, "handleIMSReply: request to origin aborted '" << http->storeEntry()->url() << "', sending old entry to client" ); |
7948b784 | 381 | http->logType = LOG_TCP_REFRESH_FAIL_OLD; |
1d7ab0f4 | 382 | sendClientOldEntry(); |
0655fa4d | 383 | } |
62e76326 | 384 | |
b297bcd0 | 385 | HttpReply *old_rep = (HttpReply *) old_entry->getReply(); |
62e76326 | 386 | |
b297bcd0 | 387 | // origin replied 304 |
955394ce | 388 | if (status == Http::scNotModified) { |
26ac0430 | 389 | http->logType = LOG_TCP_REFRESH_UNMODIFIED; |
e857372a | 390 | http->request->flags.staleIfHit = false; // old_entry is no longer stale |
045a76ab | 391 | |
26ac0430 | 392 | // update headers on existing entry |
4802f60d | 393 | old_rep->updateOnNotModified(http->storeEntry()->getReply()); |
26ac0430 | 394 | old_entry->timestampsSet(); |
62e76326 | 395 | |
26ac0430 | 396 | // if client sent IMS |
62e76326 | 397 | |
45e5102d | 398 | if (http->request->flags.ims && !old_entry->modifiedSince(http->request)) { |
26ac0430 AJ |
399 | // forward the 304 from origin |
400 | debugs(88, 3, "handleIMSReply: origin replied 304, revalidating existing entry and forwarding 304 to client"); | |
401 | sendClientUpstreamResponse(); | |
402 | } else { | |
403 | // send existing entry, it's still valid | |
404 | debugs(88, 3, "handleIMSReply: origin replied 304, revalidating existing entry and sending " << | |
9b769c67 | 405 | old_rep->sline.status() << " to client"); |
26ac0430 AJ |
406 | sendClientOldEntry(); |
407 | } | |
b297bcd0 | 408 | } |
62e76326 | 409 | |
b297bcd0 | 410 | // origin replied with a non-error code |
955394ce | 411 | else if (status > Http::scNone && status < Http::scInternalServerError) { |
26ac0430 AJ |
412 | // forward response from origin |
413 | http->logType = LOG_TCP_REFRESH_MODIFIED; | |
414 | debugs(88, 3, "handleIMSReply: origin replied " << status << ", replacing existing entry and forwarding to client"); | |
415 | sendClientUpstreamResponse(); | |
b297bcd0 | 416 | } |
62e76326 | 417 | |
b297bcd0 | 418 | // origin replied with an error |
450fe1cb | 419 | else if (http->request->flags.failOnValidationError) { |
7948b784 AR |
420 | http->logType = LOG_TCP_REFRESH_FAIL_ERR; |
421 | debugs(88, 3, "handleIMSReply: origin replied with error " << status << | |
422 | ", forwarding to client due to fail_on_validation_err"); | |
423 | sendClientUpstreamResponse(); | |
424 | } else { | |
26ac0430 | 425 | // ignore and let client have old entry |
7948b784 | 426 | http->logType = LOG_TCP_REFRESH_FAIL_OLD; |
26ac0430 | 427 | debugs(88, 3, "handleIMSReply: origin replied with error " << |
9b769c67 | 428 | status << ", sending old entry (" << old_rep->sline.status() << ") to client"); |
26ac0430 | 429 | sendClientOldEntry(); |
1d7ab0f4 | 430 | } |
edce4d98 | 431 | } |
432 | ||
82afb125 FC |
433 | SQUIDCEXTERN CSR clientGetMoreData; |
434 | SQUIDCEXTERN CSD clientReplyDetach; | |
edce4d98 | 435 | |
7d5f62a4 AJ |
436 | /** |
437 | * clientReplyContext::cacheHit Should only be called until the HTTP reply headers | |
edce4d98 | 438 | * have been parsed. Normally this should be a single call, but |
439 | * it might take more than one. As soon as we have the headers, | |
0655fa4d | 440 | * we hand off to clientSendMoreData, processExpired, or |
441 | * processMiss. | |
edce4d98 | 442 | */ |
443 | void | |
0655fa4d | 444 | clientReplyContext::CacheHit(void *data, StoreIOBuffer result) |
edce4d98 | 445 | { |
e6ccf245 | 446 | clientReplyContext *context = (clientReplyContext *)data; |
7d5f62a4 | 447 | context->cacheHit(result); |
0655fa4d | 448 | } |
449 | ||
7d5f62a4 AJ |
450 | /** |
451 | * Process a possible cache HIT. | |
452 | */ | |
0655fa4d | 453 | void |
454 | clientReplyContext::cacheHit(StoreIOBuffer result) | |
455 | { | |
7d5f62a4 | 456 | /** Ignore if the HIT object is being deleted. */ |
1b7514d9 AJ |
457 | if (deleting) { |
458 | debugs(88, 3, "HIT object being deleted. Ignore the HIT."); | |
045a76ab | 459 | return; |
1b7514d9 | 460 | } |
045a76ab | 461 | |
86a2f789 | 462 | StoreEntry *e = http->storeEntry(); |
045a76ab | 463 | |
190154cf | 464 | HttpRequest *r = http->request; |
045a76ab | 465 | |
4a7a3d56 | 466 | debugs(88, 3, "clientCacheHit: " << http->uri << ", " << result.length << " bytes"); |
62e76326 | 467 | |
86a2f789 | 468 | if (http->storeEntry() == NULL) { |
bf8fe701 | 469 | debugs(88, 3, "clientCacheHit: request aborted"); |
62e76326 | 470 | return; |
c8be6d7b | 471 | } else if (result.flags.error) { |
62e76326 | 472 | /* swap in failure */ |
bf8fe701 | 473 | debugs(88, 3, "clientCacheHit: swapin failure for " << http->uri); |
62e76326 | 474 | http->logType = LOG_TCP_SWAPFAIL_MISS; |
86a2f789 | 475 | removeClientStoreReference(&sc, http); |
0655fa4d | 476 | processMiss(); |
62e76326 | 477 | return; |
edce4d98 | 478 | } |
62e76326 | 479 | |
d3b3ab85 | 480 | if (result.length == 0) { |
1b7514d9 | 481 | debugs(88, 5, "store IO buffer has no content. MISS"); |
62e76326 | 482 | /* the store couldn't get enough data from the file for us to id the |
483 | * object | |
484 | */ | |
485 | /* treat as a miss */ | |
486 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 487 | processMiss(); |
62e76326 | 488 | return; |
d3b3ab85 | 489 | } |
62e76326 | 490 | |
edce4d98 | 491 | assert(!EBIT_TEST(e->flags, ENTRY_ABORTED)); |
492 | /* update size of the request */ | |
0655fa4d | 493 | reqsize = result.length + reqofs; |
62e76326 | 494 | |
edce4d98 | 495 | /* |
496 | * Got the headers, now grok them | |
497 | */ | |
29b8d8d6 | 498 | assert(http->logType == LOG_TCP_HIT); |
62e76326 | 499 | |
c877c0bc AR |
500 | if (strcmp(e->mem_obj->storeId(), http->request->storeId()) != 0) { |
501 | debugs(33, DBG_IMPORTANT, "clientProcessHit: URL mismatch, '" << e->mem_obj->storeId() << "' != '" << http->request->storeId() << "'"); | |
b8a899c0 | 502 | http->logType = LOG_TCP_MISS; // we lack a more precise LOG_*_MISS code |
cdd4e1c1 | 503 | processMiss(); |
504 | return; | |
505 | } | |
506 | ||
edce4d98 | 507 | switch (varyEvaluateMatch(e, r)) { |
62e76326 | 508 | |
edce4d98 | 509 | case VARY_NONE: |
62e76326 | 510 | /* No variance detected. Continue as normal */ |
511 | break; | |
512 | ||
edce4d98 | 513 | case VARY_MATCH: |
62e76326 | 514 | /* This is the correct entity for this request. Continue */ |
bf8fe701 | 515 | debugs(88, 2, "clientProcessHit: Vary MATCH!"); |
62e76326 | 516 | break; |
517 | ||
edce4d98 | 518 | case VARY_OTHER: |
62e76326 | 519 | /* This is not the correct entity for this request. We need |
520 | * to requery the cache. | |
521 | */ | |
86a2f789 | 522 | removeClientStoreReference(&sc, http); |
62e76326 | 523 | e = NULL; |
524 | /* Note: varyEvalyateMatch updates the request with vary information | |
525 | * so we only get here once. (it also takes care of cancelling loops) | |
526 | */ | |
26ac0430 | 527 | debugs(88, 2, "clientProcessHit: Vary detected!"); |
0655fa4d | 528 | clientGetMoreData(ourNode, http); |
62e76326 | 529 | return; |
530 | ||
edce4d98 | 531 | case VARY_CANCEL: |
62e76326 | 532 | /* varyEvaluateMatch found a object loop. Process as miss */ |
e0236918 | 533 | debugs(88, DBG_IMPORTANT, "clientProcessHit: Vary object loop!"); |
b8a899c0 | 534 | http->logType = LOG_TCP_MISS; // we lack a more precise LOG_*_MISS code |
0655fa4d | 535 | processMiss(); |
62e76326 | 536 | return; |
edce4d98 | 537 | } |
62e76326 | 538 | |
c2a7cefd | 539 | if (r->method == Http::METHOD_PURGE) { |
1b7514d9 | 540 | debugs(88, 5, "PURGE gets a HIT"); |
86a2f789 | 541 | removeClientStoreReference(&sc, http); |
62e76326 | 542 | e = NULL; |
0655fa4d | 543 | purgeRequest(); |
62e76326 | 544 | return; |
edce4d98 | 545 | } |
62e76326 | 546 | |
1b7514d9 AJ |
547 | if (e->checkNegativeHit() && !r->flags.noCacheHack()) { |
548 | debugs(88, 5, "negative-HIT"); | |
62e76326 | 549 | http->logType = LOG_TCP_NEGATIVE_HIT; |
0655fa4d | 550 | sendMoreData(result); |
70706149 AR |
551 | } else if (blockedHit()) { |
552 | debugs(88, 5, "send_hit forces a MISS"); | |
553 | http->logType = LOG_TCP_MISS; | |
554 | processMiss(); | |
555 | return; | |
bcfba8bd | 556 | } else if (!http->flags.internal && refreshCheckHTTP(e, r)) { |
bf8fe701 | 557 | debugs(88, 5, "clientCacheHit: in refreshCheck() block"); |
62e76326 | 558 | /* |
559 | * We hold a stale copy; it needs to be validated | |
560 | */ | |
561 | /* | |
450fe1cb | 562 | * The 'needValidation' flag is used to prevent forwarding |
62e76326 | 563 | * loops between siblings. If our copy of the object is stale, |
564 | * then we should probably only use parents for the validation | |
565 | * request. Otherwise two siblings could generate a loop if | |
566 | * both have a stale version of the object. | |
567 | */ | |
e857372a | 568 | r->flags.needValidation = true; |
62e76326 | 569 | |
570 | if (e->lastmod < 0) { | |
86310427 | 571 | debugs(88, 3, "validate HIT object? NO. Missing Last-Modified header. Do MISS."); |
62e76326 | 572 | /* |
573 | * Previous reply didn't have a Last-Modified header, | |
574 | * we cannot revalidate it. | |
575 | */ | |
576 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 577 | processMiss(); |
450fe1cb | 578 | } else if (r->flags.noCache) { |
86310427 | 579 | debugs(88, 3, "validate HIT object? NO. Client sent CC:no-cache. Do CLIENT_REFRESH_MISS"); |
62e76326 | 580 | /* |
581 | * This did not match a refresh pattern that overrides no-cache | |
582 | * we should honour the client no-cache header. | |
583 | */ | |
584 | http->logType = LOG_TCP_CLIENT_REFRESH_MISS; | |
0655fa4d | 585 | processMiss(); |
0c3d3f65 | 586 | } else if (r->protocol == AnyP::PROTO_HTTP) { |
86310427 | 587 | debugs(88, 3, "validate HIT object? YES."); |
62e76326 | 588 | /* |
589 | * Object needs to be revalidated | |
590 | * XXX This could apply to FTP as well, if Last-Modified is known. | |
591 | */ | |
0655fa4d | 592 | processExpired(); |
62e76326 | 593 | } else { |
86310427 | 594 | debugs(88, 3, "validate HIT object? NO. Client protocol non-HTTP. Do MISS."); |
62e76326 | 595 | /* |
596 | * We don't know how to re-validate other protocols. Handle | |
597 | * them as if the object has expired. | |
598 | */ | |
599 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 600 | processMiss(); |
62e76326 | 601 | } |
1b7514d9 AJ |
602 | } else if (r->conditional()) { |
603 | debugs(88, 5, "conditional HIT"); | |
79c8035e | 604 | processConditional(result); |
1b7514d9 | 605 | } else { |
62e76326 | 606 | /* |
607 | * plain ol' cache hit | |
608 | */ | |
1b7514d9 | 609 | debugs(88, 5, "plain old HIT"); |
62e76326 | 610 | |
9a0a18de | 611 | #if USE_DELAY_POOLS |
ffdf45f2 | 612 | if (e->store_status != STORE_OK) |
849b826a | 613 | http->logType = LOG_TCP_MISS; |
5bf4d170 | 614 | else |
615 | #endif | |
26ac0430 AJ |
616 | if (e->mem_status == IN_MEMORY) |
617 | http->logType = LOG_TCP_MEM_HIT; | |
618 | else if (Config.onoff.offline) | |
619 | http->logType = LOG_TCP_OFFLINE_HIT; | |
62e76326 | 620 | |
0655fa4d | 621 | sendMoreData(result); |
edce4d98 | 622 | } |
623 | } | |
624 | ||
7d5f62a4 | 625 | /** |
edce4d98 | 626 | * Prepare to fetch the object as it's a cache miss of some kind. |
627 | */ | |
628 | void | |
0655fa4d | 629 | clientReplyContext::processMiss() |
edce4d98 | 630 | { |
edce4d98 | 631 | char *url = http->uri; |
190154cf | 632 | HttpRequest *r = http->request; |
edce4d98 | 633 | ErrorState *err = NULL; |
60745f24 | 634 | debugs(88, 4, "clientProcessMiss: '" << RequestMethodStr(r->method) << " " << url << "'"); |
7d5f62a4 AJ |
635 | |
636 | /** | |
edce4d98 | 637 | * We might have a left-over StoreEntry from a failed cache hit |
638 | * or IMS request. | |
639 | */ | |
86a2f789 | 640 | if (http->storeEntry()) { |
641 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_SPECIAL)) { | |
fa84c01d | 642 | debugs(88, DBG_CRITICAL, "clientProcessMiss: miss on a special object (" << url << ")."); |
02c8dde5 | 643 | debugs(88, DBG_CRITICAL, "\tlog_type = " << LogTags_str[http->logType]); |
3900307b | 644 | http->storeEntry()->dump(1); |
62e76326 | 645 | } |
646 | ||
86a2f789 | 647 | removeClientStoreReference(&sc, http); |
edce4d98 | 648 | } |
62e76326 | 649 | |
7d5f62a4 | 650 | /** Check if its a PURGE request to be actioned. */ |
c2a7cefd | 651 | if (r->method == Http::METHOD_PURGE) { |
0655fa4d | 652 | purgeRequest(); |
62e76326 | 653 | return; |
edce4d98 | 654 | } |
914b89a2 | 655 | |
7d5f62a4 | 656 | /** Check if its an 'OTHER' request. Purge all cached entries if so and continue. */ |
c2a7cefd | 657 | if (r->method == Http::METHOD_OTHER) { |
26ac0430 | 658 | purgeAllCached(); |
60745f24 | 659 | } |
62e76326 | 660 | |
7d5f62a4 | 661 | /** Check if 'only-if-cached' flag is set. Action if so. */ |
0655fa4d | 662 | if (http->onlyIfCached()) { |
663 | processOnlyIfCachedMiss(); | |
62e76326 | 664 | return; |
edce4d98 | 665 | } |
62e76326 | 666 | |
42829656 | 667 | /// Deny loops |
450fe1cb | 668 | if (r->flags.loopDetected) { |
955394ce AJ |
669 | http->al->http.code = Http::scForbidden; |
670 | err = clientBuildError(ERR_ACCESS_DENIED, Http::scForbidden, NULL, http->getConn()->clientConnection->remote, http->request); | |
f206b652 | 671 | createStoreEntry(r->method, RequestFlags()); |
86a2f789 | 672 | errorAppendEntry(http->storeEntry(), err); |
0655fa4d | 673 | triggerInitialStoreRead(); |
62e76326 | 674 | return; |
edce4d98 | 675 | } else { |
26ac0430 | 676 | assert(http->out.offset == 0); |
0655fa4d | 677 | createStoreEntry(r->method, r->flags); |
678 | triggerInitialStoreRead(); | |
62e76326 | 679 | |
680 | if (http->redirect.status) { | |
06a5ae20 | 681 | HttpReply *rep = new HttpReply; |
62e76326 | 682 | http->logType = LOG_TCP_REDIRECT; |
d88e3c49 | 683 | http->storeEntry()->releaseRequest(); |
06a5ae20 | 684 | rep->redirect(http->redirect.status, http->redirect.location); |
db237875 | 685 | http->storeEntry()->replaceHttpReply(rep); |
86a2f789 | 686 | http->storeEntry()->complete(); |
62e76326 | 687 | return; |
688 | } | |
689 | ||
7d5f62a4 | 690 | /** Check for internal requests. Update Protocol info if so. */ |
62e76326 | 691 | if (http->flags.internal) |
0c3d3f65 | 692 | r->protocol = AnyP::PROTO_INTERNAL; |
62e76326 | 693 | |
9174ba3d | 694 | assert(r->clientConnectionManager == http->getConn()); |
655daa06 | 695 | |
7d5f62a4 | 696 | /** Start forwarding to get the new object from network */ |
73c36fd9 | 697 | Comm::ConnectionPointer conn = http->getConn() != NULL ? http->getConn()->clientConnection : NULL; |
4bf68cfa | 698 | FwdState::Start(conn, http->storeEntry(), r, http->al); |
edce4d98 | 699 | } |
700 | } | |
701 | ||
7d5f62a4 | 702 | /** |
edce4d98 | 703 | * client issued a request with an only-if-cached cache-control directive; |
704 | * we did not find a cached object that can be returned without | |
705 | * contacting other servers; | |
706 | * respond with a 504 (Gateway Timeout) as suggested in [RFC 2068] | |
707 | */ | |
0655fa4d | 708 | void |
709 | clientReplyContext::processOnlyIfCachedMiss() | |
edce4d98 | 710 | { |
bf8fe701 | 711 | debugs(88, 4, "clientProcessOnlyIfCachedMiss: '" << |
60745f24 | 712 | RequestMethodStr(http->request->method) << " " << http->uri << "'"); |
955394ce AJ |
713 | http->al->http.code = Http::scGateway_Timeout; |
714 | ErrorState *err = clientBuildError(ERR_ONLY_IF_CACHED_MISS, Http::scGateway_Timeout, NULL, | |
73c36fd9 | 715 | http->getConn()->clientConnection->remote, http->request); |
86a2f789 | 716 | removeClientStoreReference(&sc, http); |
0655fa4d | 717 | startError(err); |
edce4d98 | 718 | } |
719 | ||
79c8035e AR |
720 | /// process conditional request from client |
721 | void | |
722 | clientReplyContext::processConditional(StoreIOBuffer &result) | |
723 | { | |
a2bd457d | 724 | StoreEntry *const e = http->storeEntry(); |
79c8035e | 725 | |
9b769c67 | 726 | if (e->getReply()->sline.status() != Http::scOkay) { |
79c8035e | 727 | debugs(88, 4, "clientReplyContext::processConditional: Reply code " << |
9b769c67 | 728 | e->getReply()->sline.status() << " != 200"); |
79c8035e AR |
729 | http->logType = LOG_TCP_MISS; |
730 | processMiss(); | |
731 | return; | |
732 | } | |
733 | ||
734 | HttpRequest &r = *http->request; | |
735 | ||
736 | if (r.header.has(HDR_IF_MATCH) && !e->hasIfMatchEtag(r)) { | |
737 | // RFC 2616: reply with 412 Precondition Failed if If-Match did not match | |
738 | sendPreconditionFailedError(); | |
739 | return; | |
740 | } | |
741 | ||
742 | bool matchedIfNoneMatch = false; | |
743 | if (r.header.has(HDR_IF_NONE_MATCH)) { | |
744 | if (!e->hasIfNoneMatchEtag(r)) { | |
745 | // RFC 2616: ignore IMS if If-None-Match did not match | |
e857372a | 746 | r.flags.ims = false; |
79c8035e AR |
747 | r.ims = -1; |
748 | r.imslen = 0; | |
749 | r.header.delById(HDR_IF_MODIFIED_SINCE); | |
750 | http->logType = LOG_TCP_MISS; | |
751 | sendMoreData(result); | |
752 | return; | |
753 | } | |
754 | ||
45e5102d | 755 | if (!r.flags.ims) { |
79c8035e | 756 | // RFC 2616: if If-None-Match matched and there is no IMS, |
a2bd457d AJ |
757 | // reply with 304 Not Modified or 412 Precondition Failed |
758 | sendNotModifiedOrPreconditionFailedError(); | |
79c8035e AR |
759 | return; |
760 | } | |
761 | ||
a2bd457d | 762 | // otherwise check IMS below to decide if we reply with 304 or 412 |
79c8035e AR |
763 | matchedIfNoneMatch = true; |
764 | } | |
765 | ||
45e5102d | 766 | if (r.flags.ims) { |
79c8035e AR |
767 | // handle If-Modified-Since requests from the client |
768 | if (e->modifiedSince(&r)) { | |
769 | http->logType = LOG_TCP_IMS_HIT; | |
770 | sendMoreData(result); | |
771 | return; | |
772 | } | |
773 | ||
774 | if (matchedIfNoneMatch) { | |
a2bd457d AJ |
775 | // If-None-Match matched, reply with 304 Not Modified or |
776 | // 412 Precondition Failed | |
777 | sendNotModifiedOrPreconditionFailedError(); | |
79c8035e AR |
778 | return; |
779 | } | |
780 | ||
781 | // otherwise reply with 304 Not Modified | |
a2bd457d | 782 | sendNotModified(); |
79c8035e AR |
783 | } |
784 | } | |
785 | ||
70706149 AR |
786 | /// whether squid.conf send_hit prevents us from serving this hit |
787 | bool | |
788 | clientReplyContext::blockedHit() const | |
789 | { | |
790 | if (!Config.accessList.sendHit) | |
791 | return false; // hits are not blocked by default | |
792 | ||
793 | if (http->flags.internal) | |
794 | return false; // internal content "hits" cannot be blocked | |
795 | ||
796 | if (const HttpReply *rep = http->storeEntry()->getReply()) { | |
797 | std::auto_ptr<ACLFilledChecklist> chl(clientAclChecklistCreate(Config.accessList.sendHit, http)); | |
798 | chl->reply = const_cast<HttpReply*>(rep); // ACLChecklist API bug | |
799 | HTTPMSGLOCK(chl->reply); | |
800 | return chl->fastCheck() != ACCESS_ALLOWED; // when in doubt, block | |
801 | } | |
802 | ||
803 | // This does not happen, I hope, because we are called from CacheHit, which | |
804 | // is called via a storeClientCopy() callback, and store should initialize | |
805 | // the reply before calling that callback. | |
806 | debugs(88, 3, "Missing reply!"); | |
807 | return false; | |
808 | } | |
809 | ||
edce4d98 | 810 | void |
e6ccf245 | 811 | clientReplyContext::purgeRequestFindObjectToPurge() |
26ac0430 | 812 | { |
e6ccf245 | 813 | /* Try to find a base entry */ |
be4d35dc | 814 | http->flags.purging = true; |
e6ccf245 | 815 | lookingforstore = 1; |
26ac0430 AJ |
816 | |
817 | // TODO: can we use purgeAllCached() here instead of doing the | |
818 | // getPublicByRequestMethod() dance? | |
c2a7cefd | 819 | StoreEntry::getPublicByRequestMethod(this, http->request, Http::METHOD_GET); |
e6ccf245 | 820 | } |
821 | ||
c1520b67 AJ |
822 | // Purges all entries with a given url |
823 | // TODO: move to SideAgent parent, when we have one | |
60745f24 | 824 | /* |
825 | * We probably cannot purge Vary-affected responses because their MD5 | |
826 | * keys depend on vary headers. | |
827 | */ | |
c1520b67 | 828 | void |
90bd689c | 829 | purgeEntriesByUrl(HttpRequest * req, const char *url) |
c1520b67 | 830 | { |
8dceeee3 BR |
831 | #if USE_HTCP |
832 | bool get_or_head_sent = false; | |
833 | #endif | |
26ac0430 | 834 | |
c2a7cefd AJ |
835 | for (HttpRequestMethod m(Http::METHOD_NONE); m != Http::METHOD_ENUM_END; ++m) { |
836 | if (m.respMaybeCacheable()) { | |
c1520b67 | 837 | if (StoreEntry *entry = storeGetPublic(url, m)) { |
1bfe9ade | 838 | debugs(88, 5, "purging " << *entry << ' ' << RequestMethodStr(m) << ' ' << url); |
90bd689c | 839 | #if USE_HTCP |
8dceeee3 | 840 | neighborsHtcpClear(entry, url, req, m, HTCP_CLR_INVALIDATION); |
c2a7cefd | 841 | if (m == Http::METHOD_GET || m == Http::METHOD_HEAD) { |
8dceeee3 BR |
842 | get_or_head_sent = true; |
843 | } | |
90bd689c | 844 | #endif |
8dceeee3 | 845 | entry->release(); |
c1520b67 AJ |
846 | } |
847 | } | |
848 | } | |
8dceeee3 BR |
849 | |
850 | #if USE_HTCP | |
851 | if (!get_or_head_sent) { | |
c2a7cefd | 852 | neighborsHtcpClear(NULL, url, req, HttpRequestMethod(Http::METHOD_GET), HTCP_CLR_INVALIDATION); |
8dceeee3 BR |
853 | } |
854 | #endif | |
c1520b67 AJ |
855 | } |
856 | ||
26ac0430 | 857 | void |
60745f24 | 858 | clientReplyContext::purgeAllCached() |
859 | { | |
26ac0430 | 860 | const char *url = urlCanonical(http->request); |
90bd689c | 861 | purgeEntriesByUrl(http->request, url); |
35ececa5 | 862 | } |
60745f24 | 863 | |
e6ccf245 | 864 | void |
3b13a8fd | 865 | clientReplyContext::created(StoreEntry *newEntry) |
e6ccf245 | 866 | { |
867 | if (lookingforstore == 1) | |
62e76326 | 868 | purgeFoundGet(newEntry); |
e6ccf245 | 869 | else if (lookingforstore == 2) |
62e76326 | 870 | purgeFoundHead(newEntry); |
e6ccf245 | 871 | else if (lookingforstore == 3) |
62e76326 | 872 | purgeDoPurgeGet(newEntry); |
e6ccf245 | 873 | else if (lookingforstore == 4) |
62e76326 | 874 | purgeDoPurgeHead(newEntry); |
e6ccf245 | 875 | else if (lookingforstore == 5) |
62e76326 | 876 | identifyFoundObject(newEntry); |
e6ccf245 | 877 | } |
878 | ||
879 | void | |
3b13a8fd | 880 | clientReplyContext::purgeFoundGet(StoreEntry *newEntry) |
e6ccf245 | 881 | { |
882 | if (newEntry->isNull()) { | |
62e76326 | 883 | lookingforstore = 2; |
c2a7cefd | 884 | StoreEntry::getPublicByRequestMethod(this, http->request, Http::METHOD_HEAD); |
e6ccf245 | 885 | } else |
62e76326 | 886 | purgeFoundObject (newEntry); |
e6ccf245 | 887 | } |
888 | ||
889 | void | |
3b13a8fd | 890 | clientReplyContext::purgeFoundHead(StoreEntry *newEntry) |
e6ccf245 | 891 | { |
892 | if (newEntry->isNull()) | |
62e76326 | 893 | purgeDoMissPurge(); |
e6ccf245 | 894 | else |
62e76326 | 895 | purgeFoundObject (newEntry); |
e6ccf245 | 896 | } |
62e76326 | 897 | |
e6ccf245 | 898 | void |
3b13a8fd | 899 | clientReplyContext::purgeFoundObject(StoreEntry *entry) |
e6ccf245 | 900 | { |
901 | assert (entry && !entry->isNull()); | |
e4b9a2f0 | 902 | |
903 | if (EBIT_TEST(entry->flags, ENTRY_SPECIAL)) { | |
904 | http->logType = LOG_TCP_DENIED; | |
955394ce | 905 | ErrorState *err = clientBuildError(ERR_ACCESS_DENIED, Http::scForbidden, NULL, |
73c36fd9 | 906 | http->getConn()->clientConnection->remote, http->request); |
e4b9a2f0 | 907 | startError(err); |
c877c0bc | 908 | return; // XXX: leaking unused entry if some store does not keep it |
e4b9a2f0 | 909 | } |
910 | ||
8bcf08e0 | 911 | StoreIOBuffer localTempBuffer; |
62e76326 | 912 | /* Swap in the metadata */ |
86a2f789 | 913 | http->storeEntry(entry); |
34266cde | 914 | |
1bfe9ade | 915 | http->storeEntry()->lock("clientReplyContext::purgeFoundObject"); |
c877c0bc AR |
916 | http->storeEntry()->createMemObject(storeId(), http->log_uri, |
917 | http->request->method); | |
34266cde | 918 | |
86a2f789 | 919 | sc = storeClientListAdd(http->storeEntry(), this); |
34266cde | 920 | |
62e76326 | 921 | http->logType = LOG_TCP_HIT; |
34266cde | 922 | |
62e76326 | 923 | reqofs = 0; |
34266cde | 924 | |
8bcf08e0 | 925 | localTempBuffer.offset = http->out.offset; |
34266cde | 926 | |
8bcf08e0 | 927 | localTempBuffer.length = next()->readBuffer.length; |
34266cde | 928 | |
8bcf08e0 | 929 | localTempBuffer.data = next()->readBuffer.data; |
34266cde | 930 | |
86a2f789 | 931 | storeClientCopy(sc, http->storeEntry(), |
8bcf08e0 | 932 | localTempBuffer, CacheHit, this); |
e6ccf245 | 933 | } |
934 | ||
935 | void | |
936 | clientReplyContext::purgeRequest() | |
edce4d98 | 937 | { |
bf8fe701 | 938 | debugs(88, 3, "Config2.onoff.enable_purge = " << |
939 | Config2.onoff.enable_purge); | |
62e76326 | 940 | |
edce4d98 | 941 | if (!Config2.onoff.enable_purge) { |
62e76326 | 942 | http->logType = LOG_TCP_DENIED; |
955394ce | 943 | ErrorState *err = clientBuildError(ERR_ACCESS_DENIED, Http::scForbidden, NULL, http->getConn()->clientConnection->remote, http->request); |
0655fa4d | 944 | startError(err); |
62e76326 | 945 | return; |
edce4d98 | 946 | } |
62e76326 | 947 | |
edce4d98 | 948 | /* Release both IP cache */ |
cc192b50 | 949 | ipcacheInvalidate(http->request->GetHost()); |
edce4d98 | 950 | |
e6ccf245 | 951 | if (!http->flags.purging) |
62e76326 | 952 | purgeRequestFindObjectToPurge(); |
e6ccf245 | 953 | else |
62e76326 | 954 | purgeDoMissPurge(); |
e6ccf245 | 955 | } |
956 | ||
957 | void | |
958 | clientReplyContext::purgeDoMissPurge() | |
959 | { | |
29b8d8d6 | 960 | http->logType = LOG_TCP_MISS; |
e6ccf245 | 961 | lookingforstore = 3; |
c2a7cefd | 962 | StoreEntry::getPublicByRequestMethod(this,http->request, Http::METHOD_GET); |
e6ccf245 | 963 | } |
964 | ||
965 | void | |
3b13a8fd | 966 | clientReplyContext::purgeDoPurgeGet(StoreEntry *newEntry) |
e6ccf245 | 967 | { |
968 | assert (newEntry); | |
969 | /* Move to new() when that is created */ | |
955394ce | 970 | purgeStatus = Http::scNotFound; |
e6ccf245 | 971 | |
972 | if (!newEntry->isNull()) { | |
62e76326 | 973 | /* Release the cached URI */ |
bf8fe701 | 974 | debugs(88, 4, "clientPurgeRequest: GET '" << newEntry->url() << "'" ); |
8dceeee3 | 975 | #if USE_HTCP |
c2a7cefd | 976 | neighborsHtcpClear(newEntry, NULL, http->request, HttpRequestMethod(Http::METHOD_GET), HTCP_CLR_PURGE); |
8dceeee3 | 977 | #endif |
5f33b71d | 978 | newEntry->release(); |
955394ce | 979 | purgeStatus = Http::scOkay; |
edce4d98 | 980 | } |
62e76326 | 981 | |
e6ccf245 | 982 | lookingforstore = 4; |
c2a7cefd | 983 | StoreEntry::getPublicByRequestMethod(this, http->request, Http::METHOD_HEAD); |
e6ccf245 | 984 | } |
985 | ||
986 | void | |
3b13a8fd | 987 | clientReplyContext::purgeDoPurgeHead(StoreEntry *newEntry) |
e6ccf245 | 988 | { |
4fc0ac76 | 989 | if (newEntry && !newEntry->isNull()) { |
bf8fe701 | 990 | debugs(88, 4, "clientPurgeRequest: HEAD '" << newEntry->url() << "'" ); |
8dceeee3 | 991 | #if USE_HTCP |
c2a7cefd | 992 | neighborsHtcpClear(newEntry, NULL, http->request, HttpRequestMethod(Http::METHOD_HEAD), HTCP_CLR_PURGE); |
8dceeee3 | 993 | #endif |
5f33b71d | 994 | newEntry->release(); |
955394ce | 995 | purgeStatus = Http::scOkay; |
edce4d98 | 996 | } |
62e76326 | 997 | |
edce4d98 | 998 | /* And for Vary, release the base URI if none of the headers was included in the request */ |
62e76326 | 999 | |
edce4d98 | 1000 | if (http->request->vary_headers |
62e76326 | 1001 | && !strstr(http->request->vary_headers, "=")) { |
c2a7cefd | 1002 | StoreEntry *entry = storeGetPublic(urlCanonical(http->request), Http::METHOD_GET); |
62e76326 | 1003 | |
1004 | if (entry) { | |
bf8fe701 | 1005 | debugs(88, 4, "clientPurgeRequest: Vary GET '" << entry->url() << "'" ); |
8dceeee3 | 1006 | #if USE_HTCP |
c2a7cefd | 1007 | neighborsHtcpClear(entry, NULL, http->request, HttpRequestMethod(Http::METHOD_GET), HTCP_CLR_PURGE); |
8dceeee3 | 1008 | #endif |
5f33b71d | 1009 | entry->release(); |
955394ce | 1010 | purgeStatus = Http::scOkay; |
62e76326 | 1011 | } |
1012 | ||
c2a7cefd | 1013 | entry = storeGetPublic(urlCanonical(http->request), Http::METHOD_HEAD); |
62e76326 | 1014 | |
1015 | if (entry) { | |
bf8fe701 | 1016 | debugs(88, 4, "clientPurgeRequest: Vary HEAD '" << entry->url() << "'" ); |
8dceeee3 | 1017 | #if USE_HTCP |
c2a7cefd | 1018 | neighborsHtcpClear(entry, NULL, http->request, HttpRequestMethod(Http::METHOD_HEAD), HTCP_CLR_PURGE); |
8dceeee3 | 1019 | #endif |
5f33b71d | 1020 | entry->release(); |
955394ce | 1021 | purgeStatus = Http::scOkay; |
62e76326 | 1022 | } |
edce4d98 | 1023 | } |
62e76326 | 1024 | |
edce4d98 | 1025 | /* |
1026 | * Make a new entry to hold the reply to be written | |
1027 | * to the client. | |
1028 | */ | |
528b2c61 | 1029 | /* FIXME: This doesn't need to go through the store. Simply |
1030 | * push down the client chain | |
1031 | */ | |
f206b652 | 1032 | createStoreEntry(http->request->method, RequestFlags()); |
62e76326 | 1033 | |
0655fa4d | 1034 | triggerInitialStoreRead(); |
62e76326 | 1035 | |
7dc5f514 | 1036 | HttpReply *rep = new HttpReply; |
11992b6f | 1037 | rep->setHeaders(purgeStatus, NULL, NULL, 0, 0, -1); |
7dc5f514 | 1038 | http->storeEntry()->replaceHttpReply(rep); |
86a2f789 | 1039 | http->storeEntry()->complete(); |
edce4d98 | 1040 | } |
1041 | ||
1042 | void | |
0655fa4d | 1043 | clientReplyContext::traceReply(clientStreamNode * node) |
edce4d98 | 1044 | { |
076df709 | 1045 | clientStreamNode *nextNode = (clientStreamNode *)node->node.next->data; |
8bcf08e0 | 1046 | StoreIOBuffer localTempBuffer; |
f206b652 | 1047 | createStoreEntry(http->request->method, RequestFlags()); |
076df709 FC |
1048 | localTempBuffer.offset = nextNode->readBuffer.offset + headers_sz; |
1049 | localTempBuffer.length = nextNode->readBuffer.length; | |
1050 | localTempBuffer.data = nextNode->readBuffer.data; | |
86a2f789 | 1051 | storeClientCopy(sc, http->storeEntry(), |
8bcf08e0 | 1052 | localTempBuffer, SendMoreData, this); |
d88e3c49 | 1053 | http->storeEntry()->releaseRequest(); |
3900307b | 1054 | http->storeEntry()->buffer(); |
7dc5f514 | 1055 | HttpReply *rep = new HttpReply; |
955394ce | 1056 | rep->setHeaders(Http::scOkay, NULL, "text/plain", http->request->prefixLen(), 0, squid_curtime); |
db237875 | 1057 | http->storeEntry()->replaceHttpReply(rep); |
5cafad19 | 1058 | http->request->swapOut(http->storeEntry()); |
86a2f789 | 1059 | http->storeEntry()->complete(); |
edce4d98 | 1060 | } |
1061 | ||
1062 | #define SENDING_BODY 0 | |
1063 | #define SENDING_HDRSONLY 1 | |
1064 | int | |
0655fa4d | 1065 | clientReplyContext::checkTransferDone() |
edce4d98 | 1066 | { |
86a2f789 | 1067 | StoreEntry *entry = http->storeEntry(); |
62e76326 | 1068 | |
edce4d98 | 1069 | if (entry == NULL) |
62e76326 | 1070 | return 0; |
1071 | ||
1072 | /* | |
edce4d98 | 1073 | * For now, 'done_copying' is used for special cases like |
1074 | * Range and HEAD requests. | |
1075 | */ | |
0655fa4d | 1076 | if (http->flags.done_copying) |
62e76326 | 1077 | return 1; |
1078 | ||
450fe1cb | 1079 | if (http->request->flags.chunkedReply && !flags.complete) { |
4ad60609 AR |
1080 | // last-chunk was not sent |
1081 | return 0; | |
1082 | } | |
1083 | ||
edce4d98 | 1084 | /* |
1085 | * Handle STORE_OK objects. | |
1086 | * objectLen(entry) will be set proprely. | |
26ac0430 | 1087 | * RC: Does objectLen(entry) include the Headers? |
0e3be1ea | 1088 | * RC: Yes. |
edce4d98 | 1089 | */ |
1090 | if (entry->store_status == STORE_OK) { | |
0655fa4d | 1091 | return storeOKTransferDone(); |
e39b9382 | 1092 | } else { |
0655fa4d | 1093 | return storeNotOKTransferDone(); |
edce4d98 | 1094 | } |
e39b9382 | 1095 | } |
1096 | ||
1097 | int | |
1098 | clientReplyContext::storeOKTransferDone() const | |
1099 | { | |
aa1a691e AR |
1100 | assert(http->storeEntry()->objectLen() >= 0); |
1101 | assert(http->storeEntry()->objectLen() >= headers_sz); | |
47f6e231 | 1102 | if (http->out.offset >= http->storeEntry()->objectLen() - headers_sz) { |
26ac0430 AJ |
1103 | debugs(88,3,HERE << "storeOKTransferDone " << |
1104 | " out.offset=" << http->out.offset << | |
1105 | " objectLen()=" << http->storeEntry()->objectLen() << | |
1106 | " headers_sz=" << headers_sz); | |
62e76326 | 1107 | return 1; |
47f6e231 | 1108 | } |
62e76326 | 1109 | |
e39b9382 | 1110 | return 0; |
1111 | } | |
1112 | ||
1113 | int | |
1114 | clientReplyContext::storeNotOKTransferDone() const | |
1115 | { | |
edce4d98 | 1116 | /* |
1117 | * Now, handle STORE_PENDING objects | |
1118 | */ | |
86a2f789 | 1119 | MemObject *mem = http->storeEntry()->mem_obj; |
edce4d98 | 1120 | assert(mem != NULL); |
1121 | assert(http->request != NULL); | |
0e3be1ea | 1122 | /* mem->reply was wrong because it uses the UPSTREAM header length!!! */ |
8bcf08e0 | 1123 | HttpReply const *curReply = mem->getReply(); |
62e76326 | 1124 | |
e39b9382 | 1125 | if (headers_sz == 0) |
62e76326 | 1126 | /* haven't found end of headers yet */ |
1127 | return 0; | |
e39b9382 | 1128 | |
edce4d98 | 1129 | /* |
1130 | * Figure out how much data we are supposed to send. | |
1131 | * If we are sending a body and we don't have a content-length, | |
1132 | * then we must wait for the object to become STORE_OK. | |
1133 | */ | |
8bcf08e0 | 1134 | if (curReply->content_length < 0) |
62e76326 | 1135 | return 0; |
e39b9382 | 1136 | |
8bcf08e0 | 1137 | int64_t expectedLength = curReply->content_length + http->out.headers_sz; |
62e76326 | 1138 | |
e39b9382 | 1139 | if (http->out.size < expectedLength) |
62e76326 | 1140 | return 0; |
47f6e231 | 1141 | else { |
26ac0430 AJ |
1142 | debugs(88,3,HERE << "storeNotOKTransferDone " << |
1143 | " out.size=" << http->out.size << | |
1144 | " expectedLength=" << expectedLength); | |
62e76326 | 1145 | return 1; |
47f6e231 | 1146 | } |
edce4d98 | 1147 | } |
1148 | ||
edce4d98 | 1149 | /* A write has completed, what is the next status based on the |
1150 | * canonical request data? | |
1151 | * 1 something is wrong | |
1152 | * 0 nothing is wrong. | |
1153 | * | |
1154 | */ | |
1155 | int | |
59a1efb2 | 1156 | clientHttpRequestStatus(int fd, ClientHttpRequest const *http) |
edce4d98 | 1157 | { |
062f7f4e FC |
1158 | #if SIZEOF_INT64_T == 4 |
1159 | if (http->out.size > 0x7FFF0000) { | |
e0236918 FC |
1160 | debugs(88, DBG_IMPORTANT, "WARNING: closing FD " << fd << " to prevent out.size counter overflow"); |
1161 | debugs(88, DBG_IMPORTANT, "\tclient " << http->getConn()->peer); | |
1162 | debugs(88, DBG_IMPORTANT, "\treceived " << http->out.size << " bytes"); | |
1163 | debugs(88, DBG_IMPORTANT, "\tURI " << http->log_uri); | |
062f7f4e FC |
1164 | return 1; |
1165 | } | |
1166 | ||
1167 | if (http->out.offset > 0x7FFF0000) { | |
e0236918 FC |
1168 | debugs(88, DBG_IMPORTANT, "WARNING: closing FD " << fd < " to prevent out.offset counter overflow"); |
1169 | debugs(88, DBG_IMPORTANT, "\tclient " << http->getConn()->peer); | |
1170 | debugs(88, DBG_IMPORTANT, "\treceived " << http->out.size << " bytes, offset " << http->out.offset); | |
1171 | debugs(88, DBG_IMPORTANT, "\tURI " << http->log_uri); | |
062f7f4e FC |
1172 | return 1; |
1173 | } | |
1174 | ||
1175 | #endif | |
edce4d98 | 1176 | return 0; |
1177 | } | |
1178 | ||
62e76326 | 1179 | /* Preconditions: |
edce4d98 | 1180 | * *http is a valid structure. |
1181 | * fd is either -1, or an open fd. | |
1182 | * | |
1183 | * TODO: enumify this | |
1184 | * | |
1185 | * This function is used by any http request sink, to determine the status | |
1186 | * of the object. | |
1187 | */ | |
1188 | clientStream_status_t | |
59a1efb2 | 1189 | clientReplyStatus(clientStreamNode * aNode, ClientHttpRequest * http) |
edce4d98 | 1190 | { |
0655fa4d | 1191 | clientReplyContext *context = dynamic_cast<clientReplyContext *>(aNode->data.getRaw()); |
1192 | assert (context); | |
1193 | assert (context->http == http); | |
1194 | return context->replyStatus(); | |
1195 | } | |
1196 | ||
1197 | clientStream_status_t | |
1198 | clientReplyContext::replyStatus() | |
1199 | { | |
edce4d98 | 1200 | int done; |
1201 | /* Here because lower nodes don't need it */ | |
62e76326 | 1202 | |
3daaed1a | 1203 | if (http->storeEntry() == NULL) { |
1204 | debugs(88, 5, "clientReplyStatus: no storeEntry"); | |
62e76326 | 1205 | return STREAM_FAILED; /* yuck, but what can we do? */ |
3daaed1a | 1206 | } |
62e76326 | 1207 | |
3daaed1a | 1208 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) { |
62e76326 | 1209 | /* TODO: Could upstream read errors (result.flags.error) be |
1210 | * lost, and result in undersize requests being considered | |
1211 | * complete. Should we tcp reset such connections ? | |
1212 | */ | |
3daaed1a | 1213 | debugs(88, 5, "clientReplyStatus: aborted storeEntry"); |
62e76326 | 1214 | return STREAM_FAILED; |
3daaed1a | 1215 | } |
62e76326 | 1216 | |
0655fa4d | 1217 | if ((done = checkTransferDone()) != 0 || flags.complete) { |
1bfe9ade | 1218 | debugs(88, 5, "clientReplyStatus: transfer is DONE: " << done << flags.complete); |
62e76326 | 1219 | /* Ok we're finished, but how? */ |
1220 | ||
4ad60609 AR |
1221 | const int64_t expectedBodySize = |
1222 | http->storeEntry()->getReply()->bodySize(http->request->method); | |
450fe1cb | 1223 | if (!http->request->flags.proxyKeepalive && expectedBodySize < 0) { |
bf8fe701 | 1224 | debugs(88, 5, "clientReplyStatus: closing, content_length < 0"); |
62e76326 | 1225 | return STREAM_FAILED; |
1226 | } | |
1227 | ||
1228 | if (!done) { | |
bf8fe701 | 1229 | debugs(88, 5, "clientReplyStatus: closing, !done, but read 0 bytes"); |
62e76326 | 1230 | return STREAM_FAILED; |
1231 | } | |
1232 | ||
4ad60609 | 1233 | if (expectedBodySize >= 0 && !http->gotEnough()) { |
bf8fe701 | 1234 | debugs(88, 5, "clientReplyStatus: client didn't get all it expected"); |
62e76326 | 1235 | return STREAM_UNPLANNED_COMPLETE; |
1236 | } | |
1237 | ||
ca6d5de2 AR |
1238 | debugs(88, 5, "clientReplyStatus: stream complete; keepalive=" << |
1239 | http->request->flags.proxyKeepalive); | |
1240 | return STREAM_COMPLETE; | |
edce4d98 | 1241 | } |
62e76326 | 1242 | |
16611143 | 1243 | // XXX: Should this be checked earlier? We could return above w/o checking. |
1244 | if (reply->receivedBodyTooLarge(*http->request, http->out.offset - 4096)) { | |
b51aec66 | 1245 | /* 4096 is a margin for the HTTP headers included in out.offset */ |
bf8fe701 | 1246 | debugs(88, 5, "clientReplyStatus: client reply body is too large"); |
62e76326 | 1247 | return STREAM_FAILED; |
0e3be1ea | 1248 | } |
62e76326 | 1249 | |
edce4d98 | 1250 | return STREAM_NONE; |
1251 | } | |
1252 | ||
62e76326 | 1253 | /* Responses with no body will not have a content-type header, |
edce4d98 | 1254 | * which breaks the rep_mime_type acl, which |
1255 | * coincidentally, is the most common acl for reply access lists. | |
1256 | * A better long term fix for this is to allow acl matchs on the various | |
26ac0430 AJ |
1257 | * status codes, and then supply a default ruleset that puts these |
1258 | * codes before any user defines access entries. That way the user | |
edce4d98 | 1259 | * can choose to block these responses where appropriate, but won't get |
1260 | * mysterious breakages. | |
1261 | */ | |
0655fa4d | 1262 | bool |
955394ce | 1263 | clientReplyContext::alwaysAllowResponse(Http::StatusCode sline) const |
edce4d98 | 1264 | { |
4ef4b952 | 1265 | bool result; |
1266 | ||
edce4d98 | 1267 | switch (sline) { |
62e76326 | 1268 | |
955394ce | 1269 | case Http::scContinue: |
62e76326 | 1270 | |
955394ce | 1271 | case Http::scSwitchingProtocols: |
62e76326 | 1272 | |
955394ce | 1273 | case Http::scProcessing: |
62e76326 | 1274 | |
955394ce | 1275 | case Http::scNoContent: |
62e76326 | 1276 | |
955394ce | 1277 | case Http::scNotModified: |
4ef4b952 | 1278 | result = true; |
62e76326 | 1279 | break; |
1280 | ||
edce4d98 | 1281 | default: |
4ef4b952 | 1282 | result = false; |
edce4d98 | 1283 | } |
4ef4b952 | 1284 | |
1285 | return result; | |
edce4d98 | 1286 | } |
1287 | ||
a5c8d64d AJ |
1288 | /** |
1289 | * Generate the reply headers sent to client. | |
1290 | * | |
1291 | * Filters out unwanted entries and hop-by-hop from original reply header | |
1292 | * then adds extra entries if we have more info than origin server | |
1293 | * then adds Squid specific entries | |
edce4d98 | 1294 | */ |
0655fa4d | 1295 | void |
1296 | clientReplyContext::buildReplyHeader() | |
edce4d98 | 1297 | { |
7dc5f514 | 1298 | HttpHeader *hdr = &reply->header; |
c8be6d7b | 1299 | int is_hit = logTypeIsATcpHit(http->logType); |
190154cf | 1300 | HttpRequest *request = http->request; |
edce4d98 | 1301 | #if DONT_FILTER_THESE |
1302 | /* but you might want to if you run Squid as an HTTP accelerator */ | |
a9925b40 | 1303 | /* hdr->delById(HDR_ACCEPT_RANGES); */ |
1304 | hdr->delById(HDR_ETAG); | |
edce4d98 | 1305 | #endif |
62e76326 | 1306 | |
edce4d98 | 1307 | if (is_hit) |
a9925b40 | 1308 | hdr->delById(HDR_SET_COOKIE); |
f89d4012 | 1309 | // TODO: RFC 2965 : Must honour Cache-Control: no-cache="set-cookie2" and remove header. |
62e76326 | 1310 | |
23c6d7e7 | 1311 | // if there is not configured a peer proxy with login=PASS or login=PASSTHRU option enabled |
dcf3665b | 1312 | // remove the Proxy-Authenticate header |
23c6d7e7 | 1313 | if ( !request->peer_login || (strcmp(request->peer_login,"PASS") != 0 && strcmp(request->peer_login,"PASSTHRU") != 0)) |
26ac0430 | 1314 | reply->header.delById(HDR_PROXY_AUTHENTICATE); |
dcf3665b | 1315 | |
2cdeea82 | 1316 | reply->header.removeHopByHopEntries(); |
62e76326 | 1317 | |
1318 | // if (request->range) | |
7dc5f514 | 1319 | // clientBuildRangeHeader(http, reply); |
a5c8d64d | 1320 | |
edce4d98 | 1321 | /* |
1322 | * Add a estimated Age header on cache hits. | |
1323 | */ | |
1324 | if (is_hit) { | |
62e76326 | 1325 | /* |
1326 | * Remove any existing Age header sent by upstream caches | |
1327 | * (note that the existing header is passed along unmodified | |
1328 | * on cache misses) | |
1329 | */ | |
a9925b40 | 1330 | hdr->delById(HDR_AGE); |
62e76326 | 1331 | /* |
1332 | * This adds the calculated object age. Note that the details of the | |
1333 | * age calculation is performed by adjusting the timestamp in | |
3900307b | 1334 | * StoreEntry::timestampsSet(), not here. |
62e76326 | 1335 | */ |
bbe58ab5 | 1336 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_SPECIAL)) { |
a9925b40 | 1337 | hdr->delById(HDR_DATE); |
1338 | hdr->insertTime(HDR_DATE, squid_curtime); | |
90fa5816 AJ |
1339 | } else if (http->getConn() && http->getConn()->port->actAsOrigin) { |
1340 | // Swap the Date: header to current time if we are simulating an origin | |
fd49b08b A |
1341 | HttpHeaderEntry *h = hdr->findEntry(HDR_DATE); |
1342 | if (h) | |
1343 | hdr->putExt("X-Origin-Date", h->value.termedBuf()); | |
90fa5816 AJ |
1344 | hdr->delById(HDR_DATE); |
1345 | hdr->insertTime(HDR_DATE, squid_curtime); | |
fd49b08b A |
1346 | h = hdr->findEntry(HDR_EXPIRES); |
1347 | if (h && http->storeEntry()->expires >= 0) { | |
1348 | hdr->putExt("X-Origin-Expires", h->value.termedBuf()); | |
1349 | hdr->delById(HDR_EXPIRES); | |
1350 | hdr->insertTime(HDR_EXPIRES, squid_curtime + http->storeEntry()->expires - http->storeEntry()->timestamp); | |
1351 | } | |
90fa5816 AJ |
1352 | if (http->storeEntry()->timestamp <= squid_curtime) { |
1353 | // put X-Cache-Age: instead of Age: | |
fd49b08b A |
1354 | char age[64]; |
1355 | snprintf(age, sizeof(age), "%ld", (long int) squid_curtime - http->storeEntry()->timestamp); | |
1356 | hdr->putExt("X-Cache-Age", age); | |
1357 | } | |
a81e7089 | 1358 | } else if (http->storeEntry()->timestamp <= squid_curtime) { |
a9925b40 | 1359 | hdr->putInt(HDR_AGE, |
1360 | squid_curtime - http->storeEntry()->timestamp); | |
62e76326 | 1361 | /* Signal old objects. NB: rfc 2616 is not clear, |
1362 | * by implication, on whether we should do this to all | |
1363 | * responses, or only cache hits. | |
1364 | * 14.46 states it ONLY applys for heuristically caclulated | |
1365 | * freshness values, 13.2.4 doesn't specify the same limitation. | |
1366 | * We interpret RFC 2616 under the combination. | |
1367 | */ | |
1368 | /* TODO: if maxage or s-maxage is present, don't do this */ | |
1369 | ||
86a2f789 | 1370 | if (squid_curtime - http->storeEntry()->timestamp >= 86400) { |
8bcf08e0 FC |
1371 | char tbuf[512]; |
1372 | snprintf (tbuf, sizeof(tbuf), "%s %s %s", | |
62e76326 | 1373 | "113", ThisCache, |
1374 | "This cache hit is still fresh and more than 1 day old"); | |
8bcf08e0 | 1375 | hdr->putStr(HDR_WARNING, tbuf); |
62e76326 | 1376 | } |
1377 | } | |
a5c8d64d | 1378 | } |
528b2c61 | 1379 | |
a5c8d64d AJ |
1380 | /* RFC 2616: Section 14.18 |
1381 | * | |
1382 | * Add a Date: header if missing. | |
1383 | * We have access to a clock therefore are required to amend any shortcoming in servers. | |
1384 | * | |
1385 | * NP: done after Age: to prevent ENTRY_SPECIAL double-handling this header. | |
1386 | */ | |
1387 | if ( !hdr->has(HDR_DATE) ) { | |
f0dedeb5 | 1388 | if (!http->storeEntry()) |
a5c8d64d | 1389 | hdr->insertTime(HDR_DATE, squid_curtime); |
f0dedeb5 AJ |
1390 | else if (http->storeEntry()->timestamp > 0) |
1391 | hdr->insertTime(HDR_DATE, http->storeEntry()->timestamp); | |
1392 | else { | |
d9d98242 | 1393 | debugs(88,DBG_IMPORTANT,"BUG 3279: HTTP reply without Date:"); |
e78ae89a AJ |
1394 | /* dump something useful about the problem */ |
1395 | http->storeEntry()->dump(DBG_IMPORTANT); | |
f0dedeb5 | 1396 | } |
edce4d98 | 1397 | } |
62e76326 | 1398 | |
bcfba8bd | 1399 | // add Warnings required by RFC 2616 if serving a stale hit |
450fe1cb | 1400 | if (http->request->flags.staleIfHit && logTypeIsATcpHit(http->logType)) { |
bcfba8bd | 1401 | hdr->putWarning(110, "Response is stale"); |
450fe1cb | 1402 | if (http->request->flags.needValidation) |
bcfba8bd AR |
1403 | hdr->putWarning(111, "Revalidation failed"); |
1404 | } | |
1405 | ||
0bd9aa82 | 1406 | /* Filter unproxyable authentication types */ |
ddd31ed3 | 1407 | if (http->logType != LOG_TCP_DENIED && |
d67acb4e | 1408 | hdr->has(HDR_WWW_AUTHENTICATE)) { |
62e76326 | 1409 | HttpHeaderPos pos = HttpHeaderInitPos; |
1410 | HttpHeaderEntry *e; | |
1411 | ||
26ac0430 | 1412 | int connection_auth_blocked = 0; |
a9925b40 | 1413 | while ((e = hdr->getEntry(&pos))) { |
d67acb4e | 1414 | if (e->id == HDR_WWW_AUTHENTICATE) { |
5b4117d8 | 1415 | const char *value = e->value.rawBuf(); |
62e76326 | 1416 | |
1417 | if ((strncasecmp(value, "NTLM", 4) == 0 && | |
1418 | (value[4] == '\0' || value[4] == ' ')) | |
1419 | || | |
1420 | (strncasecmp(value, "Negotiate", 9) == 0 && | |
d67acb4e | 1421 | (value[9] == '\0' || value[9] == ' ')) |
26ac0430 AJ |
1422 | || |
1423 | (strncasecmp(value, "Kerberos", 8) == 0 && | |
1424 | (value[8] == '\0' || value[8] == ' '))) { | |
450fe1cb | 1425 | if (request->flags.connectionAuthDisabled) { |
26ac0430 | 1426 | hdr->delAt(pos, connection_auth_blocked); |
d67acb4e AJ |
1427 | continue; |
1428 | } | |
e857372a | 1429 | request->flags.mustKeepalive = true; |
45e5102d | 1430 | if (!request->flags.accelerated && !request->flags.intercepted) { |
d67acb4e | 1431 | httpHeaderPutStrf(hdr, HDR_PROXY_SUPPORT, "Session-Based-Authentication"); |
26ac0430 AJ |
1432 | /* |
1433 | We send "[Proxy-]Connection: Proxy-Support" header to mark | |
1434 | Proxy-Support as a hop-by-hop header for intermediaries that do not | |
1435 | understand the semantics of this header. The RFC should have included | |
1436 | this recommendation. | |
1437 | */ | |
d67acb4e AJ |
1438 | httpHeaderPutStrf(hdr, HDR_CONNECTION, "Proxy-support"); |
1439 | } | |
1440 | break; | |
26ac0430 | 1441 | } |
62e76326 | 1442 | } |
1443 | } | |
d67acb4e AJ |
1444 | |
1445 | if (connection_auth_blocked) | |
ba9fb01d | 1446 | hdr->refreshMask(); |
0bd9aa82 | 1447 | } |
62e76326 | 1448 | |
2f1431ea | 1449 | #if USE_AUTH |
edce4d98 | 1450 | /* Handle authentication headers */ |
26ac0430 | 1451 | if (http->logType == LOG_TCP_DENIED && |
9b769c67 AJ |
1452 | ( reply->sline.status() == Http::scProxyAuthenticationRequired || |
1453 | reply->sline.status() == Http::scUnauthorized) | |
26ac0430 AJ |
1454 | ) { |
1455 | /* Add authentication header */ | |
1456 | /*! \todo alter errorstate to be accel on|off aware. The 0 on the next line | |
1457 | * depends on authenticate behaviour: all schemes to date send no extra | |
1458 | * data on 407/401 responses, and do not check the accel state on 401/407 | |
1459 | * responses | |
1460 | */ | |
1461 | authenticateFixHeader(reply, request->auth_user_request, request, 0, 1); | |
a33a428a AJ |
1462 | } else if (request->auth_user_request != NULL) |
1463 | authenticateFixHeader(reply, request->auth_user_request, request, http->flags.accel, 0); | |
2f1431ea | 1464 | #endif |
62e76326 | 1465 | |
edce4d98 | 1466 | /* Append X-Cache */ |
1467 | httpHeaderPutStrf(hdr, HDR_X_CACHE, "%s from %s", | |
62e76326 | 1468 | is_hit ? "HIT" : "MISS", getMyHostname()); |
1469 | ||
edce4d98 | 1470 | #if USE_CACHE_DIGESTS |
1471 | /* Append X-Cache-Lookup: -- temporary hack, to be removed @?@ @?@ */ | |
1472 | httpHeaderPutStrf(hdr, HDR_X_CACHE_LOOKUP, "%s from %s:%d", | |
0655fa4d | 1473 | lookup_type ? lookup_type : "NONE", |
62e76326 | 1474 | getMyHostname(), getMyPort()); |
1475 | ||
edce4d98 | 1476 | #endif |
62e76326 | 1477 | |
45e5102d | 1478 | const bool maySendChunkedReply = !request->multipartRangeRequest() && |
f7701e72 | 1479 | reply->sline.protocol == AnyP::PROTO_HTTP && // response is HTTP |
526ed14e | 1480 | (request->http_ver >= Http::ProtocolVersion(1, 1)); |
4ad60609 | 1481 | |
f529bb20 | 1482 | /* Check whether we should send keep-alive */ |
9b769c67 | 1483 | if (!Config.onoff.error_pconns && reply->sline.status() >= 400 && !request->flags.mustKeepalive) { |
bf8fe701 | 1484 | debugs(33, 3, "clientBuildReplyHeader: Error, don't keep-alive"); |
e857372a | 1485 | request->flags.proxyKeepalive = false; |
450fe1cb | 1486 | } else if (!Config.onoff.client_pconns && !request->flags.mustKeepalive) { |
17b57873 | 1487 | debugs(33, 2, "clientBuildReplyHeader: Connection Keep-Alive not requested by admin or client"); |
e857372a | 1488 | request->flags.proxyKeepalive = false; |
450fe1cb | 1489 | } else if (request->flags.proxyKeepalive && shutting_down) { |
f529bb20 | 1490 | debugs(88, 3, "clientBuildReplyHeader: Shutting down, don't keep-alive."); |
e857372a | 1491 | request->flags.proxyKeepalive = false; |
450fe1cb | 1492 | } else if (request->flags.connectionAuth && !reply->keep_alive) { |
26ac0430 | 1493 | debugs(33, 2, "clientBuildReplyHeader: Connection oriented auth but server side non-persistent"); |
e857372a | 1494 | request->flags.proxyKeepalive = false; |
4ad60609 | 1495 | } else if (reply->bodySize(request->method) < 0 && !maySendChunkedReply) { |
17b57873 | 1496 | debugs(88, 3, "clientBuildReplyHeader: can't keep-alive, unknown body size" ); |
e857372a | 1497 | request->flags.proxyKeepalive = false; |
450fe1cb | 1498 | } else if (fdUsageHigh()&& !request->flags.mustKeepalive) { |
17b57873 | 1499 | debugs(88, 3, "clientBuildReplyHeader: Not many unused FDs, can't keep-alive"); |
e857372a | 1500 | request->flags.proxyKeepalive = false; |
450fe1cb | 1501 | } else if (request->flags.sslBumped && !reply->persistent()) { |
49f1c7f7 AR |
1502 | // We do not really have to close, but we pretend we are a tunnel. |
1503 | debugs(88, 3, "clientBuildReplyHeader: bumped reply forces close"); | |
e857372a | 1504 | request->flags.proxyKeepalive = false; |
693cb033 CT |
1505 | } else if (request->pinnedConnection() && !reply->persistent()) { |
1506 | // The peer wants to close the pinned connection | |
1507 | debugs(88, 3, "pinned reply forces close"); | |
e857372a | 1508 | request->flags.proxyKeepalive = false; |
17b57873 | 1509 | } |
d67acb4e | 1510 | |
4ad60609 AR |
1511 | // Decide if we send chunked reply |
1512 | if (maySendChunkedReply && | |
450fe1cb | 1513 | request->flags.proxyKeepalive && |
4cb2536f | 1514 | reply->bodySize(request->method) < 0) { |
4ad60609 | 1515 | debugs(88, 3, "clientBuildReplyHeader: chunked reply"); |
e857372a | 1516 | request->flags.chunkedReply = true; |
4ad60609 AR |
1517 | hdr->putStr(HDR_TRANSFER_ENCODING, "chunked"); |
1518 | } | |
f529bb20 | 1519 | |
4dea3fdd | 1520 | /* Append VIA */ |
92caea77 | 1521 | if (Config.onoff.via) { |
62e76326 | 1522 | LOCAL_ARRAY(char, bbuf, MAX_URL + 32); |
30abd221 | 1523 | String strVia; |
26ac0430 | 1524 | hdr->getList(HDR_VIA, &strVia); |
88331887 | 1525 | snprintf(bbuf, MAX_URL + 32, "%d.%d %s", |
7dc5f514 | 1526 | reply->sline.version.major, |
1527 | reply->sline.version.minor, | |
62e76326 | 1528 | ThisCache); |
1529 | strListAdd(&strVia, bbuf, ','); | |
a9925b40 | 1530 | hdr->delById(HDR_VIA); |
5b4117d8 | 1531 | hdr->putStr(HDR_VIA, strVia.termedBuf()); |
c8be6d7b | 1532 | } |
95e78500 | 1533 | /* Signal keep-alive or close explicitly */ |
450fe1cb | 1534 | hdr->putStr(HDR_CONNECTION, request->flags.proxyKeepalive ? "keep-alive" : "close"); |
62e76326 | 1535 | |
edce4d98 | 1536 | #if ADD_X_REQUEST_URI |
1537 | /* | |
1538 | * Knowing the URI of the request is useful when debugging persistent | |
1539 | * connections in a client; we cannot guarantee the order of http headers, | |
1540 | * but X-Request-URI is likely to be the very last header to ease use from a | |
1541 | * debugger [hdr->entries.count-1]. | |
1542 | */ | |
a9925b40 | 1543 | hdr->putStr(HDR_X_REQUEST_URI, |
1544 | http->memOjbect()->url ? http->memObject()->url : http->uri); | |
62e76326 | 1545 | |
edce4d98 | 1546 | #endif |
62e76326 | 1547 | |
45cca89d AJ |
1548 | /* Surrogate-Control requires Surrogate-Capability from upstream to pass on */ |
1549 | if ( hdr->has(HDR_SURROGATE_CONTROL) ) { | |
1550 | if (!request->header.has(HDR_SURROGATE_CAPABILITY)) { | |
1551 | hdr->delById(HDR_SURROGATE_CONTROL); | |
1552 | } | |
1553 | /* TODO: else case: drop any controls intended specifically for our surrogate ID */ | |
1554 | } | |
1555 | ||
8c01ada0 | 1556 | httpHdrMangleList(hdr, request, ROR_REPLY); |
edce4d98 | 1557 | } |
1558 | ||
0655fa4d | 1559 | void |
b297bcd0 | 1560 | clientReplyContext::cloneReply() |
edce4d98 | 1561 | { |
7dc5f514 | 1562 | assert(reply == NULL); |
0655fa4d | 1563 | |
b248c2a3 AJ |
1564 | reply = http->storeEntry()->getReply()->clone(); |
1565 | HTTPMSGLOCK(reply); | |
7dc5f514 | 1566 | |
0c3d3f65 | 1567 | if (reply->sline.protocol == AnyP::PROTO_HTTP) { |
871c031f | 1568 | /* RFC 2616 requires us to advertise our 1.1 version (but only on real HTTP traffic) */ |
526ed14e | 1569 | reply->sline.version = Http::ProtocolVersion(1,1); |
e77d7ef0 | 1570 | } |
0655fa4d | 1571 | |
1572 | /* do header conversions */ | |
1573 | buildReplyHeader(); | |
edce4d98 | 1574 | } |
1575 | ||
7681a3b9 AR |
1576 | /// Safely disposes of an entry pointing to a cache hit that we do not want. |
1577 | /// We cannot just ignore the entry because it may be locking or otherwise | |
1578 | /// holding an associated cache resource of some sort. | |
1579 | void | |
1580 | clientReplyContext::forgetHit() | |
1581 | { | |
1582 | StoreEntry *e = http->storeEntry(); | |
1583 | assert(e); // or we are not dealing with a hit | |
1584 | // We probably have not locked the entry earlier, unfortunately. We lock it | |
1585 | // now so that we can unlock two lines later (and trigger cleanup). | |
1586 | // Ideally, ClientHttpRequest::storeEntry() should lock/unlock, but it is | |
1587 | // used so inconsistently that simply adding locking there leads to bugs. | |
1bfe9ade | 1588 | e->lock("clientReplyContext::forgetHit"); |
7681a3b9 | 1589 | http->storeEntry(NULL); |
1bfe9ade | 1590 | e->unlock("clientReplyContext::forgetHit"); // may delete e |
7681a3b9 AR |
1591 | } |
1592 | ||
e6ccf245 | 1593 | void |
1594 | clientReplyContext::identifyStoreObject() | |
edce4d98 | 1595 | { |
190154cf | 1596 | HttpRequest *r = http->request; |
62e76326 | 1597 | |
45e5102d | 1598 | if (r->flags.cachable || r->flags.internal) { |
62e76326 | 1599 | lookingforstore = 5; |
1600 | StoreEntry::getPublicByRequest (this, r); | |
559da936 | 1601 | } else { |
62e76326 | 1602 | identifyFoundObject (NullStoreEntry::getInstance()); |
559da936 | 1603 | } |
e6ccf245 | 1604 | } |
1605 | ||
7d5f62a4 AJ |
1606 | /** |
1607 | * Check state of the current StoreEntry object. | |
1608 | * to see if we can determine the final status of the request. | |
1609 | */ | |
e6ccf245 | 1610 | void |
1611 | clientReplyContext::identifyFoundObject(StoreEntry *newEntry) | |
1612 | { | |
1613 | StoreEntry *e = newEntry; | |
190154cf | 1614 | HttpRequest *r = http->request; |
62e76326 | 1615 | |
d85b8894 | 1616 | /** \li If the entry received isNull() then we ignore it. */ |
e6ccf245 | 1617 | if (e->isNull()) { |
86a2f789 | 1618 | http->storeEntry(NULL); |
e6ccf245 | 1619 | } else { |
86a2f789 | 1620 | http->storeEntry(e); |
e6ccf245 | 1621 | } |
62e76326 | 1622 | |
86a2f789 | 1623 | e = http->storeEntry(); |
a12a049a | 1624 | |
7d5f62a4 | 1625 | /* Release IP-cache entries on reload */ |
d85b8894 | 1626 | /** \li If the request has no-cache flag set or some no_cache HACK in operation we |
7d5f62a4 AJ |
1627 | * 'invalidate' the cached IP entries for this request ??? |
1628 | */ | |
17852883 | 1629 | if (r->flags.noCache || r->flags.noCacheHack()) |
cc192b50 | 1630 | ipcacheInvalidateNegative(r->GetHost()); |
45e5102d | 1631 | |
edce4d98 | 1632 | #if USE_CACHE_DIGESTS |
86a2f789 | 1633 | lookup_type = http->storeEntry() ? "HIT" : "MISS"; |
edce4d98 | 1634 | #endif |
62e76326 | 1635 | |
86a2f789 | 1636 | if (NULL == http->storeEntry()) { |
d85b8894 | 1637 | /** \li If no StoreEntry object is current assume this object isn't in the cache set MISS*/ |
e4d13993 | 1638 | debugs(85, 3, "StoreEntry is NULL - MISS"); |
62e76326 | 1639 | http->logType = LOG_TCP_MISS; |
1640 | doGetMoreData(); | |
1641 | return; | |
edce4d98 | 1642 | } |
62e76326 | 1643 | |
edce4d98 | 1644 | if (Config.onoff.offline) { |
d85b8894 | 1645 | /** \li If we are running in offline mode set to HIT */ |
e4d13993 | 1646 | debugs(85, 3, "offline HIT " << *e); |
62e76326 | 1647 | http->logType = LOG_TCP_HIT; |
1648 | doGetMoreData(); | |
1649 | return; | |
edce4d98 | 1650 | } |
62e76326 | 1651 | |
edce4d98 | 1652 | if (http->redirect.status) { |
d85b8894 | 1653 | /** \li If redirection status is True force this to be a MISS */ |
539283df | 1654 | debugs(85, 3, "REDIRECT status forced StoreEntry to NULL (no body on 3XX responses) " << *e); |
7681a3b9 | 1655 | forgetHit(); |
16cd3193 | 1656 | http->logType = LOG_TCP_REDIRECT; |
62e76326 | 1657 | doGetMoreData(); |
1658 | return; | |
edce4d98 | 1659 | } |
62e76326 | 1660 | |
3900307b | 1661 | if (!e->validToSend()) { |
e4d13993 | 1662 | debugs(85, 3, "!storeEntryValidToSend MISS " << *e); |
7681a3b9 | 1663 | forgetHit(); |
62e76326 | 1664 | http->logType = LOG_TCP_MISS; |
1665 | doGetMoreData(); | |
1666 | return; | |
edce4d98 | 1667 | } |
62e76326 | 1668 | |
edce4d98 | 1669 | if (EBIT_TEST(e->flags, ENTRY_SPECIAL)) { |
d85b8894 | 1670 | /* \li Special entries are always hits, no matter what the client says */ |
e4d13993 | 1671 | debugs(85, 3, "ENTRY_SPECIAL HIT " << *e); |
62e76326 | 1672 | http->logType = LOG_TCP_HIT; |
1673 | doGetMoreData(); | |
1674 | return; | |
edce4d98 | 1675 | } |
62e76326 | 1676 | |
450fe1cb | 1677 | if (r->flags.noCache) { |
e4d13993 | 1678 | debugs(85, 3, "no-cache REFRESH MISS " << *e); |
7681a3b9 | 1679 | forgetHit(); |
62e76326 | 1680 | http->logType = LOG_TCP_CLIENT_REFRESH_MISS; |
1681 | doGetMoreData(); | |
1682 | return; | |
edce4d98 | 1683 | } |
62e76326 | 1684 | |
e4d13993 | 1685 | debugs(85, 3, "default HIT " << *e); |
e6ccf245 | 1686 | http->logType = LOG_TCP_HIT; |
1687 | doGetMoreData(); | |
edce4d98 | 1688 | } |
1689 | ||
d85b8894 AJ |
1690 | /** |
1691 | * Request more data from the store for the client Stream | |
edce4d98 | 1692 | * This is *the* entry point to this module. |
1693 | * | |
1694 | * Preconditions: | |
d85b8894 AJ |
1695 | * - This is the head of the list. |
1696 | * - There is at least one more node. | |
1697 | * - Data context is not null | |
edce4d98 | 1698 | */ |
1699 | void | |
59a1efb2 | 1700 | clientGetMoreData(clientStreamNode * aNode, ClientHttpRequest * http) |
edce4d98 | 1701 | { |
edce4d98 | 1702 | /* Test preconditions */ |
e6ccf245 | 1703 | assert(aNode != NULL); |
1704 | assert(cbdataReferenceValid(aNode)); | |
e6ccf245 | 1705 | assert(aNode->node.prev == NULL); |
1706 | assert(aNode->node.next != NULL); | |
0655fa4d | 1707 | clientReplyContext *context = dynamic_cast<clientReplyContext *>(aNode->data.getRaw()); |
1708 | assert (context); | |
edce4d98 | 1709 | assert(context->http == http); |
1710 | ||
0655fa4d | 1711 | clientStreamNode *next = ( clientStreamNode *)aNode->node.next->data; |
62e76326 | 1712 | |
edce4d98 | 1713 | if (!context->ourNode) |
62e76326 | 1714 | context->ourNode = aNode; |
1715 | ||
e6ccf245 | 1716 | /* no cbdatareference, this is only used once, and safely */ |
edce4d98 | 1717 | if (context->flags.storelogiccomplete) { |
62e76326 | 1718 | StoreIOBuffer tempBuffer; |
1719 | tempBuffer.offset = next->readBuffer.offset + context->headers_sz; | |
1720 | tempBuffer.length = next->readBuffer.length; | |
1721 | tempBuffer.data = next->readBuffer.data; | |
1722 | ||
86a2f789 | 1723 | storeClientCopy(context->sc, http->storeEntry(), |
0655fa4d | 1724 | tempBuffer, clientReplyContext::SendMoreData, context); |
62e76326 | 1725 | return; |
edce4d98 | 1726 | } |
62e76326 | 1727 | |
c2a7cefd | 1728 | if (context->http->request->method == Http::METHOD_PURGE) { |
62e76326 | 1729 | context->purgeRequest(); |
1730 | return; | |
edce4d98 | 1731 | } |
62e76326 | 1732 | |
e18b8316 | 1733 | // OPTIONS with Max-Forwards:0 handled in clientProcessRequest() |
fc90edc3 | 1734 | |
c2a7cefd | 1735 | if (context->http->request->method == Http::METHOD_TRACE) { |
34ee6e73 | 1736 | if (context->http->request->header.getInt64(HDR_MAX_FORWARDS) == 0) { |
0655fa4d | 1737 | context->traceReply(aNode); |
62e76326 | 1738 | return; |
1739 | } | |
1740 | ||
1741 | /* continue forwarding, not finished yet. */ | |
1742 | http->logType = LOG_TCP_MISS; | |
1743 | ||
1744 | context->doGetMoreData(); | |
edce4d98 | 1745 | } else |
62e76326 | 1746 | context->identifyStoreObject(); |
e6ccf245 | 1747 | } |
1748 | ||
1749 | void | |
1750 | clientReplyContext::doGetMoreData() | |
1751 | { | |
edce4d98 | 1752 | /* We still have to do store logic processing - vary, cache hit etc */ |
86a2f789 | 1753 | if (http->storeEntry() != NULL) { |
62e76326 | 1754 | /* someone found the object in the cache for us */ |
8bcf08e0 | 1755 | StoreIOBuffer localTempBuffer; |
34266cde | 1756 | |
1bfe9ade | 1757 | http->storeEntry()->lock("clientReplyContext::doGetMoreData"); |
62e76326 | 1758 | |
c877c0bc AR |
1759 | MemObject *mem_obj = http->storeEntry()->makeMemObject(); |
1760 | if (!mem_obj->hasUris()) { | |
62e76326 | 1761 | /* |
1762 | * This if-block exists because we don't want to clobber | |
1763 | * a preexiting mem_obj->method value if the mem_obj | |
1764 | * already exists. For example, when a HEAD request | |
1765 | * is a cache hit for a GET response, we want to keep | |
1766 | * the method as GET. | |
1767 | */ | |
c877c0bc | 1768 | mem_obj->setUris(storeId(), http->log_uri, http->request->method); |
a8a0b1c2 EC |
1769 | /** |
1770 | * Here we can see if the object was | |
1771 | * created using URL or alternative StoreID from helper. | |
1772 | */ | |
c877c0bc | 1773 | debugs(88, 3, "storeId: " << http->storeEntry()->mem_obj->storeId()); |
62e76326 | 1774 | } |
1775 | ||
86a2f789 | 1776 | sc = storeClientListAdd(http->storeEntry(), this); |
9a0a18de | 1777 | #if USE_DELAY_POOLS |
62e76326 | 1778 | sc->setDelayId(DelayId::DelayClient(http)); |
edce4d98 | 1779 | #endif |
62e76326 | 1780 | |
1781 | assert(http->logType == LOG_TCP_HIT); | |
1782 | reqofs = 0; | |
1783 | /* guarantee nothing has been sent yet! */ | |
1784 | assert(http->out.size == 0); | |
1785 | assert(http->out.offset == 0); | |
425de4c8 AJ |
1786 | |
1787 | if (Ip::Qos::TheConfig.isHitTosActive()) { | |
73c36fd9 | 1788 | Ip::Qos::doTosLocalHit(http->getConn()->clientConnection); |
425de4c8 AJ |
1789 | } |
1790 | ||
1791 | if (Ip::Qos::TheConfig.isHitNfmarkActive()) { | |
73c36fd9 | 1792 | Ip::Qos::doNfmarkLocalHit(http->getConn()->clientConnection); |
b86ab75b | 1793 | } |
425de4c8 | 1794 | |
8bcf08e0 FC |
1795 | localTempBuffer.offset = reqofs; |
1796 | localTempBuffer.length = getNextNode()->readBuffer.length; | |
1797 | localTempBuffer.data = getNextNode()->readBuffer.data; | |
1798 | storeClientCopy(sc, http->storeEntry(), localTempBuffer, CacheHit, this); | |
edce4d98 | 1799 | } else { |
62e76326 | 1800 | /* MISS CASE, http->logType is already set! */ |
0655fa4d | 1801 | processMiss(); |
edce4d98 | 1802 | } |
1803 | } | |
1804 | ||
d85b8894 | 1805 | /** The next node has removed itself from the stream. */ |
edce4d98 | 1806 | void |
59a1efb2 | 1807 | clientReplyDetach(clientStreamNode * node, ClientHttpRequest * http) |
edce4d98 | 1808 | { |
d85b8894 | 1809 | /** detach from the stream */ |
edce4d98 | 1810 | clientStreamDetach(node, http); |
1811 | } | |
1812 | ||
d85b8894 AJ |
1813 | /** |
1814 | * Accepts chunk of a http message in buf, parses prefix, filters headers and | |
edce4d98 | 1815 | * such, writes processed message to the message recipient |
1816 | */ | |
1817 | void | |
0655fa4d | 1818 | clientReplyContext::SendMoreData(void *data, StoreIOBuffer result) |
edce4d98 | 1819 | { |
e6ccf245 | 1820 | clientReplyContext *context = static_cast<clientReplyContext *>(data); |
528b2c61 | 1821 | context->sendMoreData (result); |
1822 | } | |
1823 | ||
1824 | void | |
1825 | clientReplyContext::makeThisHead() | |
1826 | { | |
1827 | /* At least, I think thats what this does */ | |
1828 | dlinkDelete(&http->active, &ClientActiveRequests); | |
1829 | dlinkAdd(http, &http->active, &ClientActiveRequests); | |
1830 | } | |
1831 | ||
1832 | bool | |
1833 | clientReplyContext::errorInStream(StoreIOBuffer const &result, size_t const &sizeToProcess)const | |
1834 | { | |
1835 | return /* aborted request */ | |
86a2f789 | 1836 | (http->storeEntry() && EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) || |
62e76326 | 1837 | /* Upstream read error */ (result.flags.error) || |
1838 | /* Upstream EOF */ (sizeToProcess == 0); | |
528b2c61 | 1839 | } |
1840 | ||
1841 | void | |
1842 | clientReplyContext::sendStreamError(StoreIOBuffer const &result) | |
1843 | { | |
d85b8894 | 1844 | /** call clientWriteComplete so the client socket gets closed |
af6a12ee | 1845 | * |
d85b8894 | 1846 | * We call into the stream, because we don't know that there is a |
528b2c61 | 1847 | * client socket! |
1848 | */ | |
26ac0430 | 1849 | debugs(88, 5, "clientReplyContext::sendStreamError: A stream error has occured, marking as complete and sending no data."); |
8bcf08e0 | 1850 | StoreIOBuffer localTempBuffer; |
528b2c61 | 1851 | flags.complete = 1; |
e857372a | 1852 | http->request->flags.streamError = true; |
8bcf08e0 | 1853 | localTempBuffer.flags.error = result.flags.error; |
528b2c61 | 1854 | clientStreamCallback((clientStreamNode*)http->client_stream.head->data, http, NULL, |
8bcf08e0 | 1855 | localTempBuffer); |
528b2c61 | 1856 | } |
1857 | ||
1858 | void | |
1859 | clientReplyContext::pushStreamData(StoreIOBuffer const &result, char *source) | |
1860 | { | |
8bcf08e0 | 1861 | StoreIOBuffer localTempBuffer; |
62e76326 | 1862 | |
528b2c61 | 1863 | if (result.length == 0) { |
bf8fe701 | 1864 | debugs(88, 5, "clientReplyContext::pushStreamData: marking request as complete due to 0 length store result"); |
62e76326 | 1865 | flags.complete = 1; |
528b2c61 | 1866 | } |
62e76326 | 1867 | |
43ae1d95 | 1868 | assert(result.offset - headers_sz == next()->readBuffer.offset); |
8bcf08e0 FC |
1869 | localTempBuffer.offset = result.offset - headers_sz; |
1870 | localTempBuffer.length = result.length; | |
62e76326 | 1871 | |
8bcf08e0 FC |
1872 | if (localTempBuffer.length) |
1873 | localTempBuffer.data = source; | |
62e76326 | 1874 | |
528b2c61 | 1875 | clientStreamCallback((clientStreamNode*)http->client_stream.head->data, http, NULL, |
8bcf08e0 | 1876 | localTempBuffer); |
528b2c61 | 1877 | } |
1878 | ||
1879 | clientStreamNode * | |
1880 | clientReplyContext::next() const | |
1881 | { | |
1882 | assert ( (clientStreamNode*)http->client_stream.head->next->data == getNextNode()); | |
1883 | return getNextNode(); | |
1884 | } | |
1885 | ||
b51aec66 | 1886 | void |
16611143 | 1887 | clientReplyContext::sendBodyTooLargeError() |
b51aec66 | 1888 | { |
b7ac5457 | 1889 | Ip::Address tmp_noaddr; |
4dd643d5 | 1890 | tmp_noaddr.setNoAddr(); // TODO: make a global const |
af0d9bca | 1891 | http->logType = LOG_TCP_DENIED_REPLY; |
955394ce | 1892 | ErrorState *err = clientBuildError(ERR_TOO_BIG, Http::scForbidden, NULL, |
73c36fd9 | 1893 | http->getConn() != NULL ? http->getConn()->clientConnection->remote : tmp_noaddr, |
26ac0430 | 1894 | http->request); |
16611143 | 1895 | removeClientStoreReference(&(sc), http); |
1896 | HTTPMSGUNLOCK(reply); | |
1897 | startError(err); | |
26ac0430 | 1898 | |
b51aec66 | 1899 | } |
1900 | ||
79c8035e AR |
1901 | /// send 412 (Precondition Failed) to client |
1902 | void | |
1903 | clientReplyContext::sendPreconditionFailedError() | |
1904 | { | |
1905 | http->logType = LOG_TCP_HIT; | |
1906 | ErrorState *const err = | |
955394ce | 1907 | clientBuildError(ERR_PRECONDITION_FAILED, Http::scPreconditionFailed, |
73c36fd9 | 1908 | NULL, http->getConn()->clientConnection->remote, http->request); |
79c8035e AR |
1909 | removeClientStoreReference(&sc, http); |
1910 | HTTPMSGUNLOCK(reply); | |
1911 | startError(err); | |
1912 | } | |
1913 | ||
a2bd457d AJ |
1914 | /// send 304 (Not Modified) to client |
1915 | void | |
1916 | clientReplyContext::sendNotModified() | |
1917 | { | |
1918 | StoreEntry *e = http->storeEntry(); | |
1919 | const time_t timestamp = e->timestamp; | |
1920 | HttpReply *const temprep = e->getReply()->make304(); | |
1921 | http->logType = LOG_TCP_IMS_HIT; | |
1922 | removeClientStoreReference(&sc, http); | |
f206b652 | 1923 | createStoreEntry(http->request->method, RequestFlags()); |
a2bd457d AJ |
1924 | e = http->storeEntry(); |
1925 | // Copy timestamp from the original entry so the 304 | |
1926 | // reply has a meaningful Age: header. | |
90fa5816 | 1927 | e->timestampsSet(); |
a2bd457d AJ |
1928 | e->timestamp = timestamp; |
1929 | e->replaceHttpReply(temprep); | |
1930 | e->complete(); | |
1931 | /* | |
1932 | * TODO: why put this in the store and then serialise it and | |
1933 | * then parse it again. Simply mark the request complete in | |
1934 | * our context and write the reply struct to the client side. | |
1935 | */ | |
1936 | triggerInitialStoreRead(); | |
1937 | } | |
1938 | ||
1939 | /// send 304 (Not Modified) or 412 (Precondition Failed) to client | |
1940 | /// depending on request method | |
1941 | void | |
1942 | clientReplyContext::sendNotModifiedOrPreconditionFailedError() | |
1943 | { | |
c2a7cefd AJ |
1944 | if (http->request->method == Http::METHOD_GET || |
1945 | http->request->method == Http::METHOD_HEAD) | |
a2bd457d AJ |
1946 | sendNotModified(); |
1947 | else | |
1948 | sendPreconditionFailedError(); | |
1949 | } | |
1950 | ||
4993f571 | 1951 | void |
1952 | clientReplyContext::processReplyAccess () | |
1953 | { | |
b50e327b | 1954 | /* NP: this should probably soft-fail to a zero-sized-reply error ?? */ |
7dc5f514 | 1955 | assert(reply); |
b50e327b AJ |
1956 | |
1957 | /** Don't block our own responses or HTTP status messages */ | |
16611143 | 1958 | if (http->logType == LOG_TCP_DENIED || |
26ac0430 | 1959 | http->logType == LOG_TCP_DENIED_REPLY || |
9b769c67 | 1960 | alwaysAllowResponse(reply->sline.status())) { |
acbf9428 | 1961 | headers_sz = reply->hdr_sz; |
2efeb0b7 | 1962 | processReplyAccessResult(ACCESS_ALLOWED); |
26ac0430 | 1963 | return; |
230a8cc6 | 1964 | } |
26ac0430 | 1965 | |
b50e327b | 1966 | /** Check for reply to big error */ |
16611143 | 1967 | if (reply->expectedBodyTooLarge(*http->request)) { |
1968 | sendBodyTooLargeError(); | |
62e76326 | 1969 | return; |
1970 | } | |
1971 | ||
7dc5f514 | 1972 | headers_sz = reply->hdr_sz; |
230a8cc6 | 1973 | |
b50e327b | 1974 | /** check for absent access controls (permit by default) */ |
230a8cc6 | 1975 | if (!Config.accessList.reply) { |
2efeb0b7 | 1976 | processReplyAccessResult(ACCESS_ALLOWED); |
26ac0430 | 1977 | return; |
230a8cc6 | 1978 | } |
1979 | ||
b50e327b | 1980 | /** Process http_reply_access lists */ |
127dce76 AR |
1981 | ACLFilledChecklist *replyChecklist = |
1982 | clientAclChecklistCreate(Config.accessList.reply, http); | |
b248c2a3 AJ |
1983 | replyChecklist->reply = reply; |
1984 | HTTPMSGLOCK(replyChecklist->reply); | |
0655fa4d | 1985 | replyChecklist->nonBlockingCheck(ProcessReplyAccessResult, this); |
4993f571 | 1986 | } |
1987 | ||
1988 | void | |
2efeb0b7 | 1989 | clientReplyContext::ProcessReplyAccessResult(allow_t rv, void *voidMe) |
4993f571 | 1990 | { |
1991 | clientReplyContext *me = static_cast<clientReplyContext *>(voidMe); | |
0655fa4d | 1992 | me->processReplyAccessResult(rv); |
4993f571 | 1993 | } |
1994 | ||
1995 | void | |
2efeb0b7 | 1996 | clientReplyContext::processReplyAccessResult(const allow_t &accessAllowed) |
4993f571 | 1997 | { |
26ac0430 | 1998 | debugs(88, 2, "The reply for " << RequestMethodStr(http->request->method) |
2efeb0b7 | 1999 | << " " << http->uri << " is " << accessAllowed << ", because it matched '" |
bf8fe701 | 2000 | << (AclMatchedName ? AclMatchedName : "NO ACL's") << "'" ); |
62e76326 | 2001 | |
2efeb0b7 | 2002 | if (accessAllowed != ACCESS_ALLOWED) { |
62e76326 | 2003 | ErrorState *err; |
0185bd6f | 2004 | err_type page_id; |
9ce7856a | 2005 | page_id = aclGetDenyInfoPage(&Config.denyInfoList, AclMatchedName, 1); |
0185bd6f | 2006 | |
c466369c | 2007 | http->logType = LOG_TCP_DENIED_REPLY; |
2008 | ||
0185bd6f | 2009 | if (page_id == ERR_NONE) |
2010 | page_id = ERR_ACCESS_DENIED; | |
2011 | ||
b7ac5457 | 2012 | Ip::Address tmp_noaddr; |
4dd643d5 | 2013 | tmp_noaddr.setNoAddr(); |
955394ce | 2014 | err = clientBuildError(page_id, Http::scForbidden, NULL, |
73c36fd9 | 2015 | http->getConn() != NULL ? http->getConn()->clientConnection->remote : tmp_noaddr, |
26ac0430 | 2016 | http->request); |
0185bd6f | 2017 | |
86a2f789 | 2018 | removeClientStoreReference(&sc, http); |
0185bd6f | 2019 | |
7dc5f514 | 2020 | HTTPMSGUNLOCK(reply); |
0185bd6f | 2021 | |
3c2c1d31 | 2022 | startError(err); |
2023 | ||
62e76326 | 2024 | return; |
2025 | } | |
2026 | ||
0976f8db | 2027 | /* Ok, the reply is allowed, */ |
2028 | http->loggingEntry(http->storeEntry()); | |
2029 | ||
7dc5f514 | 2030 | ssize_t body_size = reqofs - reply->hdr_sz; |
b297bcd0 | 2031 | if (body_size < 0) { |
26ac0430 AJ |
2032 | reqofs = reply->hdr_sz; |
2033 | body_size = 0; | |
b297bcd0 | 2034 | } |
0976f8db | 2035 | |
bf8fe701 | 2036 | debugs(88, 3, "clientReplyContext::sendMoreData: Appending " << |
2037 | (int) body_size << " bytes after " << reply->hdr_sz << | |
2038 | " bytes of headers"); | |
0976f8db | 2039 | |
f41735ea | 2040 | #if USE_SQUID_ESI |
62e76326 | 2041 | |
9b769c67 AJ |
2042 | if (http->flags.accel && reply->sline.status() != Http::scForbidden && |
2043 | !alwaysAllowResponse(reply->sline.status()) && | |
7dc5f514 | 2044 | esiEnableProcessing(reply)) { |
bf8fe701 | 2045 | debugs(88, 2, "Enabling ESI processing for " << http->uri); |
43ae1d95 | 2046 | clientStreamInsertHead(&http->client_stream, esiStreamRead, |
2047 | esiProcessStream, esiStreamDetach, esiStreamStatus, NULL); | |
2048 | } | |
2049 | ||
5ef38a13 | 2050 | #endif |
2051 | ||
c2a7cefd | 2052 | if (http->request->method == Http::METHOD_HEAD) { |
62e76326 | 2053 | /* do not forward body for HEAD replies */ |
2054 | body_size = 0; | |
be4d35dc | 2055 | http->flags.done_copying = true; |
62e76326 | 2056 | flags.complete = 1; |
2057 | } | |
2058 | ||
2059 | assert (!flags.headersSent); | |
2060 | flags.headersSent = true; | |
2061 | ||
8bcf08e0 | 2062 | StoreIOBuffer localTempBuffer; |
62e76326 | 2063 | char *buf = next()->readBuffer.data; |
e85eb4e1 | 2064 | char *body_buf = buf + reply->hdr_sz; |
62e76326 | 2065 | |
49ea0125 | 2066 | //Server side may disable ranges under some circumstances. |
2067 | ||
2068 | if ((!http->request->range)) | |
2069 | next()->readBuffer.offset = 0; | |
2070 | ||
e85eb4e1 AJ |
2071 | body_buf -= next()->readBuffer.offset; |
2072 | ||
62e76326 | 2073 | if (next()->readBuffer.offset != 0) { |
2074 | if (next()->readBuffer.offset > body_size) { | |
2324cda2 | 2075 | /* Can't use any of the body we received. send nothing */ |
8bcf08e0 FC |
2076 | localTempBuffer.length = 0; |
2077 | localTempBuffer.data = NULL; | |
62e76326 | 2078 | } else { |
8bcf08e0 FC |
2079 | localTempBuffer.length = body_size - next()->readBuffer.offset; |
2080 | localTempBuffer.data = body_buf + next()->readBuffer.offset; | |
62e76326 | 2081 | } |
2082 | } else { | |
8bcf08e0 FC |
2083 | localTempBuffer.length = body_size; |
2084 | localTempBuffer.data = body_buf; | |
62e76326 | 2085 | } |
2086 | ||
0655fa4d | 2087 | /* TODO??: move the data in the buffer back by the request header size */ |
62e76326 | 2088 | clientStreamCallback((clientStreamNode *)http->client_stream.head->data, |
8bcf08e0 | 2089 | http, reply, localTempBuffer); |
62e76326 | 2090 | |
2091 | return; | |
4993f571 | 2092 | } |
2093 | ||
528b2c61 | 2094 | void |
2095 | clientReplyContext::sendMoreData (StoreIOBuffer result) | |
2096 | { | |
50c09fc4 | 2097 | if (deleting) |
2098 | return; | |
2099 | ||
86a2f789 | 2100 | StoreEntry *entry = http->storeEntry(); |
50c09fc4 | 2101 | |
1cf238db | 2102 | ConnStateData * conn = http->getConn(); |
50c09fc4 | 2103 | |
ea25a575 TH |
2104 | // too late, our conn is closing |
2105 | // TODO: should we also quit? | |
2106 | if (conn == NULL) { | |
2107 | debugs(33,3, "not sending more data to a closed connection" ); | |
2108 | return; | |
2109 | } | |
2110 | if (!conn->isOpen()) { | |
2111 | debugs(33,3, "not sending more data to closing connection " << conn->clientConnection); | |
9af2f95b AR |
2112 | return; |
2113 | } | |
693cb033 CT |
2114 | if (conn->pinning.zeroReply) { |
2115 | debugs(33,3, "not sending more data after a pinned zero reply " << conn->clientConnection); | |
9af2f95b AR |
2116 | return; |
2117 | } | |
50c09fc4 | 2118 | |
528b2c61 | 2119 | char *buf = next()->readBuffer.data; |
50c09fc4 | 2120 | |
da33c835 | 2121 | if (buf != result.data) { |
62e76326 | 2122 | /* we've got to copy some data */ |
2123 | assert(result.length <= next()->readBuffer.length); | |
41d00cd3 | 2124 | memcpy(buf, result.data, result.length); |
edce4d98 | 2125 | } |
62e76326 | 2126 | |
73c36fd9 | 2127 | if (reqofs==0 && !logTypeIsATcpHit(http->logType) && Comm::IsConnOpen(conn->clientConnection)) { |
425de4c8 | 2128 | if (Ip::Qos::TheConfig.isHitTosActive()) { |
73c36fd9 | 2129 | Ip::Qos::doTosLocalMiss(conn->clientConnection, http->request->hier.code); |
425de4c8 AJ |
2130 | } |
2131 | if (Ip::Qos::TheConfig.isHitNfmarkActive()) { | |
73c36fd9 | 2132 | Ip::Qos::doNfmarkLocalMiss(conn->clientConnection, http->request->hier.code); |
452bb8e2 | 2133 | } |
7172612f | 2134 | } |
7172612f | 2135 | |
ab9c533b HN |
2136 | /* We've got the final data to start pushing... */ |
2137 | flags.storelogiccomplete = 1; | |
2138 | ||
4993f571 | 2139 | reqofs += result.length; |
2140 | ||
2141 | assert(reqofs <= HTTP_REQBUF_SZ || flags.headersSent); | |
62e76326 | 2142 | |
edce4d98 | 2143 | assert(http->request != NULL); |
62e76326 | 2144 | |
edce4d98 | 2145 | /* ESI TODO: remove this assert once everything is stable */ |
2146 | assert(http->client_stream.head->data | |
62e76326 | 2147 | && cbdataReferenceValid(http->client_stream.head->data)); |
528b2c61 | 2148 | |
2149 | makeThisHead(); | |
62e76326 | 2150 | |
bf8fe701 | 2151 | debugs(88, 5, "clientReplyContext::sendMoreData: " << http->uri << ", " << |
47f6e231 | 2152 | reqofs << " bytes (" << result.length << |
bf8fe701 | 2153 | " new bytes)"); |
47f6e231 | 2154 | debugs(88, 5, "clientReplyContext::sendMoreData:" |
73c36fd9 | 2155 | << conn->clientConnection << |
26ac0430 AJ |
2156 | " '" << entry->url() << "'" << |
2157 | " out.offset=" << http->out.offset); | |
528b2c61 | 2158 | |
edce4d98 | 2159 | /* update size of the request */ |
4993f571 | 2160 | reqsize = reqofs; |
62e76326 | 2161 | |
4993f571 | 2162 | if (errorInStream(result, reqofs)) { |
62e76326 | 2163 | sendStreamError(result); |
2164 | return; | |
edce4d98 | 2165 | } |
528b2c61 | 2166 | |
2167 | if (flags.headersSent) { | |
62e76326 | 2168 | pushStreamData (result, buf); |
2169 | return; | |
edce4d98 | 2170 | } |
62e76326 | 2171 | |
b297bcd0 | 2172 | cloneReply(); |
21b92762 | 2173 | |
b297bcd0 | 2174 | /* handle headers */ |
21b92762 | 2175 | |
b297bcd0 | 2176 | if (Config.onoff.log_mime_hdrs) { |
26ac0430 | 2177 | size_t k; |
43ae1d95 | 2178 | |
26ac0430 | 2179 | if ((k = headersEnd(buf, reqofs))) { |
41ebd397 CT |
2180 | safe_free(http->al->headers.reply); |
2181 | http->al->headers.reply = (char *)xcalloc(k + 1, 1); | |
2182 | xstrncpy(http->al->headers.reply, buf, k); | |
26ac0430 | 2183 | } |
edce4d98 | 2184 | } |
b297bcd0 HN |
2185 | |
2186 | holdingBuffer = result; | |
2187 | processReplyAccess(); | |
2188 | return; | |
edce4d98 | 2189 | } |
2190 | ||
edce4d98 | 2191 | /* Using this breaks the client layering just a little! |
2192 | */ | |
0655fa4d | 2193 | void |
f206b652 | 2194 | clientReplyContext::createStoreEntry(const HttpRequestMethod& m, RequestFlags reqFlags) |
edce4d98 | 2195 | { |
0655fa4d | 2196 | assert(http != NULL); |
edce4d98 | 2197 | /* |
2198 | * For erroneous requests, we might not have a h->request, | |
2199 | * so make a fake one. | |
2200 | */ | |
62e76326 | 2201 | |
b248c2a3 AJ |
2202 | if (http->request == NULL) { |
2203 | http->request = new HttpRequest(m, AnyP::PROTO_NONE, null_string); | |
2204 | HTTPMSGLOCK(http->request); | |
2205 | } | |
62e76326 | 2206 | |
a8a0b1c2 | 2207 | StoreEntry *e = storeCreateEntry(storeId(), http->log_uri, reqFlags, m); |
62e76326 | 2208 | |
e4d13993 AR |
2209 | // Make entry collapsable ASAP, to increase collapsing chances for others, |
2210 | // TODO: every must-revalidate and similar request MUST reach the origin, | |
2211 | // but do we have to prohibit others from collapsing on that request? | |
9a9954ba | 2212 | if (Config.onoff.collapsed_forwarding && reqFlags.cachable && |
9d4e9cfb AR |
2213 | !reqFlags.needValidation && |
2214 | (m == Http::METHOD_GET || m == Http::METHOD_HEAD)) { | |
9a9954ba AR |
2215 | // make the entry available for future requests now |
2216 | Store::Root().allowCollapsing(e, reqFlags, m); | |
2217 | } | |
2218 | ||
0655fa4d | 2219 | sc = storeClientListAdd(e, this); |
62e76326 | 2220 | |
9a0a18de | 2221 | #if USE_DELAY_POOLS |
0655fa4d | 2222 | sc->setDelayId(DelayId::DelayClient(http)); |
edce4d98 | 2223 | #endif |
62e76326 | 2224 | |
0655fa4d | 2225 | reqofs = 0; |
62e76326 | 2226 | |
0655fa4d | 2227 | reqsize = 0; |
62e76326 | 2228 | |
edce4d98 | 2229 | /* I don't think this is actually needed! -- adrian */ |
0655fa4d | 2230 | /* http->reqbuf = http->norm_reqbuf; */ |
2231 | // assert(http->reqbuf == http->norm_reqbuf); | |
edce4d98 | 2232 | /* The next line is illegal because we don't know if the client stream |
26ac0430 | 2233 | * buffers have been set up |
edce4d98 | 2234 | */ |
0655fa4d | 2235 | // storeClientCopy(http->sc, e, 0, HTTP_REQBUF_SZ, http->reqbuf, |
2236 | // SendMoreData, this); | |
edce4d98 | 2237 | /* So, we mark the store logic as complete */ |
8bcf08e0 | 2238 | flags.storelogiccomplete = 1; |
62e76326 | 2239 | |
edce4d98 | 2240 | /* and get the caller to request a read, from whereever they are */ |
62e76326 | 2241 | /* NOTE: after ANY data flows down the pipe, even one step, |
26ac0430 | 2242 | * this function CAN NOT be used to manage errors |
edce4d98 | 2243 | */ |
86a2f789 | 2244 | http->storeEntry(e); |
edce4d98 | 2245 | } |
2246 | ||
2247 | ErrorState * | |
955394ce | 2248 | clientBuildError(err_type page_id, Http::StatusCode status, char const *url, |
b7ac5457 | 2249 | Ip::Address &src_addr, HttpRequest * request) |
edce4d98 | 2250 | { |
913524f0 | 2251 | ErrorState *err = new ErrorState(page_id, status, request); |
cc192b50 | 2252 | err->src_addr = src_addr; |
62e76326 | 2253 | |
edce4d98 | 2254 | if (url) |
62e76326 | 2255 | err->url = xstrdup(url); |
2256 | ||
edce4d98 | 2257 | return err; |
2258 | } |