]>
Commit | Line | Data |
---|---|---|
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 | |
0655fa4d | 72 | CBDATA_CLASS_INIT(clientReplyContext); |
edce4d98 | 73 | |
edce4d98 | 74 | /* Local functions */ |
e6ccf245 | 75 | extern "C" CSS clientReplyStatus; |
955394ce | 76 | ErrorState *clientBuildError(err_type, Http::StatusCode, char const *, Ip::Address &, HttpRequest *); |
edce4d98 | 77 | |
edce4d98 | 78 | /* privates */ |
edce4d98 | 79 | |
0655fa4d | 80 | clientReplyContext::~clientReplyContext() |
edce4d98 | 81 | { |
50c09fc4 | 82 | deleting = true; |
83 | /* This may trigger a callback back into SendMoreData as the cbdata | |
84 | * is still valid | |
85 | */ | |
86a2f789 | 86 | removeClientStoreReference(&sc, http); |
edce4d98 | 87 | /* old_entry might still be set if we didn't yet get the reply |
0655fa4d | 88 | * code in HandleIMSReply() */ |
89 | removeStoreReference(&old_sc, &old_entry); | |
90 | safe_free(tempBuffer.data); | |
91 | cbdataReferenceDone(http); | |
2b7d324b | 92 | HTTPMSGUNLOCK(reply); |
edce4d98 | 93 | } |
94 | ||
59a1efb2 | 95 | clientReplyContext::clientReplyContext(ClientHttpRequest *clientContext) : http (cbdataReference(clientContext)), old_entry (NULL), old_sc(NULL), deleting(false) |
0655fa4d | 96 | {} |
edce4d98 | 97 | |
a5c8d64d AJ |
98 | /** Create an error in the store awaiting the client side to read it. |
99 | * | |
100 | * This may be better placed in the clientStream logic, but it has not been | |
0655fa4d | 101 | * relocated there yet |
102 | */ | |
edce4d98 | 103 | void |
0655fa4d | 104 | clientReplyContext::setReplyToError( |
955394ce | 105 | err_type err, Http::StatusCode status, const HttpRequestMethod& method, char const *uri, |
b7ac5457 | 106 | Ip::Address &addr, HttpRequest * failedrequest, const char *unparsedrequest, |
2f1431ea | 107 | #if USE_AUTH |
c7baff40 | 108 | Auth::UserRequest::Pointer auth_user_request |
2f1431ea | 109 | #else |
9d2b8284 | 110 | void* |
2f1431ea | 111 | #endif |
74174c03 | 112 | ) |
edce4d98 | 113 | { |
a33a428a | 114 | ErrorState *errstate = clientBuildError(err, status, uri, addr, failedrequest); |
62e76326 | 115 | |
edce4d98 | 116 | if (unparsedrequest) |
62e76326 | 117 | errstate->request_hdrs = xstrdup(unparsedrequest); |
edce4d98 | 118 | |
8eb0a7ee CT |
119 | #if USE_AUTH |
120 | errstate->auth_user_request = auth_user_request; | |
121 | #endif | |
122 | setReplyToError(method, errstate); | |
123 | } | |
124 | ||
125 | void clientReplyContext::setReplyToError(const HttpRequestMethod& method, ErrorState *errstate) | |
126 | { | |
955394ce | 127 | if (errstate->httpStatus == Http::scNotImplemented && http->request) |
62e76326 | 128 | /* prevent confusion over whether we default to persistent or not */ |
e857372a | 129 | http->request->flags.proxyKeepalive = false; |
62e76326 | 130 | |
41ebd397 | 131 | http->al->http.code = errstate->httpStatus; |
edce4d98 | 132 | |
f206b652 | 133 | createStoreEntry(method, RequestFlags()); |
edce4d98 | 134 | assert(errstate->callback_data == NULL); |
86a2f789 | 135 | errorAppendEntry(http->storeEntry(), errstate); |
edce4d98 | 136 | /* Now the caller reads to get this */ |
137 | } | |
138 | ||
061bbdec CT |
139 | void clientReplyContext::setReplyToStoreEntry(StoreEntry *entry) |
140 | { | |
cb9060be | 141 | entry->lock(); // removeClientStoreReference() unlocks |
061bbdec CT |
142 | sc = storeClientListAdd(entry, this); |
143 | #if USE_DELAY_POOLS | |
144 | sc->setDelayId(DelayId::DelayClient(http)); | |
145 | #endif | |
146 | reqofs = 0; | |
147 | reqsize = 0; | |
148 | flags.storelogiccomplete = 1; | |
149 | http->storeEntry(entry); | |
150 | } | |
151 | ||
edce4d98 | 152 | void |
0655fa4d | 153 | clientReplyContext::removeStoreReference(store_client ** scp, |
154 | StoreEntry ** ep) | |
edce4d98 | 155 | { |
156 | StoreEntry *e; | |
e4ae841b | 157 | store_client *sc_tmp = *scp; |
62e76326 | 158 | |
edce4d98 | 159 | if ((e = *ep) != NULL) { |
62e76326 | 160 | *ep = NULL; |
e4ae841b | 161 | storeUnregister(sc_tmp, e, this); |
62e76326 | 162 | *scp = NULL; |
97b5e68f | 163 | e->unlock(); |
edce4d98 | 164 | } |
165 | } | |
166 | ||
86a2f789 | 167 | void |
8bcf08e0 | 168 | clientReplyContext::removeClientStoreReference(store_client **scp, ClientHttpRequest *aHttpRequest) |
86a2f789 | 169 | { |
8bcf08e0 | 170 | StoreEntry *reference = aHttpRequest->storeEntry(); |
86a2f789 | 171 | removeStoreReference(scp, &reference); |
8bcf08e0 | 172 | aHttpRequest->storeEntry(reference); |
86a2f789 | 173 | } |
174 | ||
edce4d98 | 175 | void |
0655fa4d | 176 | clientReplyContext::saveState() |
edce4d98 | 177 | { |
e6ccf245 | 178 | assert(old_sc == NULL); |
bf8fe701 | 179 | debugs(88, 3, "clientReplyContext::saveState: saving store context"); |
86a2f789 | 180 | old_entry = http->storeEntry(); |
e6ccf245 | 181 | old_sc = sc; |
182 | old_reqsize = reqsize; | |
183 | tempBuffer.offset = reqofs; | |
edce4d98 | 184 | /* Prevent accessing the now saved entries */ |
86a2f789 | 185 | http->storeEntry(NULL); |
e6ccf245 | 186 | sc = NULL; |
187 | reqsize = 0; | |
188 | reqofs = 0; | |
edce4d98 | 189 | } |
190 | ||
191 | void | |
0655fa4d | 192 | clientReplyContext::restoreState() |
edce4d98 | 193 | { |
e6ccf245 | 194 | assert(old_sc != NULL); |
bf8fe701 | 195 | debugs(88, 3, "clientReplyContext::restoreState: Restoring store context"); |
86a2f789 | 196 | removeClientStoreReference(&sc, http); |
197 | http->storeEntry(old_entry); | |
e6ccf245 | 198 | sc = old_sc; |
199 | reqsize = old_reqsize; | |
200 | reqofs = tempBuffer.offset; | |
edce4d98 | 201 | /* Prevent accessed the old saved entries */ |
0655fa4d | 202 | old_entry = NULL; |
e6ccf245 | 203 | old_sc = NULL; |
204 | old_reqsize = 0; | |
205 | tempBuffer.offset = 0; | |
c8be6d7b | 206 | } |
207 | ||
208 | void | |
0655fa4d | 209 | clientReplyContext::startError(ErrorState * err) |
c8be6d7b | 210 | { |
f206b652 | 211 | createStoreEntry(http->request->method, RequestFlags()); |
0655fa4d | 212 | triggerInitialStoreRead(); |
86a2f789 | 213 | errorAppendEntry(http->storeEntry(), err); |
edce4d98 | 214 | } |
215 | ||
e6ccf245 | 216 | clientStreamNode * |
528b2c61 | 217 | clientReplyContext::getNextNode() const |
e6ccf245 | 218 | { |
62e76326 | 219 | return (clientStreamNode *)ourNode->node.next->data; |
e6ccf245 | 220 | } |
221 | ||
62e76326 | 222 | /* This function is wrong - the client parameters don't include the |
528b2c61 | 223 | * header offset |
224 | */ | |
c8be6d7b | 225 | void |
0655fa4d | 226 | clientReplyContext::triggerInitialStoreRead() |
c8be6d7b | 227 | { |
0655fa4d | 228 | /* when confident, 0 becomes reqofs, and then this factors into |
26ac0430 | 229 | * startSendProcess |
528b2c61 | 230 | */ |
0655fa4d | 231 | assert(reqofs == 0); |
8bcf08e0 FC |
232 | StoreIOBuffer localTempBuffer (next()->readBuffer.length, 0, next()->readBuffer.data); |
233 | storeClientCopy(sc, http->storeEntry(), localTempBuffer, SendMoreData, this); | |
c8be6d7b | 234 | } |
edce4d98 | 235 | |
236 | /* there is an expired entry in the store. | |
237 | * setup a temporary buffer area and perform an IMS to the origin | |
238 | */ | |
0655fa4d | 239 | void |
240 | clientReplyContext::processExpired() | |
edce4d98 | 241 | { |
a8a0b1c2 | 242 | const char *url = storeId(); |
edce4d98 | 243 | StoreEntry *entry = NULL; |
bf8fe701 | 244 | debugs(88, 3, "clientReplyContext::processExpired: '" << http->uri << "'"); |
86a2f789 | 245 | assert(http->storeEntry()->lastmod >= 0); |
edce4d98 | 246 | /* |
247 | * check if we are allowed to contact other servers | |
26ac0430 | 248 | * @?@: Instead of a 504 (Gateway Timeout) reply, we may want to return |
edce4d98 | 249 | * a stale entry *if* it matches client requirements |
250 | */ | |
62e76326 | 251 | |
0655fa4d | 252 | if (http->onlyIfCached()) { |
253 | processOnlyIfCachedMiss(); | |
62e76326 | 254 | return; |
edce4d98 | 255 | } |
62e76326 | 256 | |
e857372a | 257 | http->request->flags.refresh = true; |
edce4d98 | 258 | #if STORE_CLIENT_LIST_DEBUG |
c8be6d7b | 259 | /* Prevent a race with the store client memory free routines |
edce4d98 | 260 | */ |
0655fa4d | 261 | assert(storeClientIsThisAClient(sc, this)); |
edce4d98 | 262 | #endif |
263 | /* Prepare to make a new temporary request */ | |
0655fa4d | 264 | saveState(); |
edce4d98 | 265 | entry = storeCreateEntry(url, |
62e76326 | 266 | http->log_uri, http->request->flags, http->request->method); |
34266cde | 267 | /* NOTE, don't call StoreEntry->lock(), storeCreateEntry() does it */ |
0655fa4d | 268 | sc = storeClientListAdd(entry, this); |
9a0a18de | 269 | #if USE_DELAY_POOLS |
edce4d98 | 270 | /* delay_id is already set on original store client */ |
0655fa4d | 271 | sc->setDelayId(DelayId::DelayClient(http)); |
edce4d98 | 272 | #endif |
62e76326 | 273 | |
0655fa4d | 274 | http->request->lastmod = old_entry->lastmod; |
46017fdd CT |
275 | |
276 | if (!http->request->header.has(HDR_IF_NONE_MATCH)) { | |
277 | ETag etag = {NULL, -1}; // TODO: make that a default ETag constructor | |
278 | if (old_entry->hasEtag(etag) && !etag.weak) | |
279 | http->request->etag = etag.str; | |
280 | } | |
281 | ||
4a7a3d56 | 282 | debugs(88, 5, "clientReplyContext::processExpired : lastmod " << entry->lastmod ); |
86a2f789 | 283 | http->storeEntry(entry); |
c8be6d7b | 284 | assert(http->out.offset == 0); |
9174ba3d | 285 | assert(http->request->clientConnectionManager == http->getConn()); |
655daa06 | 286 | |
b2d22df6 | 287 | /* |
288 | * A refcounted pointer so that FwdState stays around as long as | |
289 | * this clientReplyContext does | |
290 | */ | |
73c36fd9 | 291 | Comm::ConnectionPointer conn = http->getConn() != NULL ? http->getConn()->clientConnection : NULL; |
4bf68cfa | 292 | FwdState::Start(conn, http->storeEntry(), http->request, http->al); |
62e76326 | 293 | |
edce4d98 | 294 | /* Register with storage manager to receive updates when data comes in. */ |
62e76326 | 295 | |
edce4d98 | 296 | if (EBIT_TEST(entry->flags, ENTRY_ABORTED)) |
fa84c01d | 297 | debugs(88, DBG_CRITICAL, "clientReplyContext::processExpired: Found ENTRY_ABORTED object"); |
62e76326 | 298 | |
c8be6d7b | 299 | { |
62e76326 | 300 | /* start counting the length from 0 */ |
8bcf08e0 FC |
301 | StoreIOBuffer localTempBuffer(HTTP_REQBUF_SZ, 0, tempbuf); |
302 | storeClientCopy(sc, entry, localTempBuffer, HandleIMSReply, this); | |
edce4d98 | 303 | } |
304 | } | |
305 | ||
528b2c61 | 306 | void |
307 | clientReplyContext::sendClientUpstreamResponse() | |
308 | { | |
309 | StoreIOBuffer tempresult; | |
0655fa4d | 310 | removeStoreReference(&old_sc, &old_entry); |
2324cda2 | 311 | /* here the data to send is the data we just received */ |
528b2c61 | 312 | tempBuffer.offset = 0; |
313 | old_reqsize = 0; | |
0655fa4d | 314 | /* sendMoreData tracks the offset as well. |
528b2c61 | 315 | * Force it back to zero */ |
316 | reqofs = 0; | |
86a2f789 | 317 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 318 | /* TODO: provide sendMoreData with the ready parsed reply */ |
528b2c61 | 319 | tempresult.length = reqsize; |
320 | tempresult.data = tempbuf; | |
0655fa4d | 321 | sendMoreData(tempresult); |
528b2c61 | 322 | } |
323 | ||
edce4d98 | 324 | void |
0655fa4d | 325 | clientReplyContext::HandleIMSReply(void *data, StoreIOBuffer result) |
edce4d98 | 326 | { |
e6ccf245 | 327 | clientReplyContext *context = (clientReplyContext *)data; |
0655fa4d | 328 | context->handleIMSReply(result); |
329 | } | |
62e76326 | 330 | |
0655fa4d | 331 | void |
332 | clientReplyContext::sendClientOldEntry() | |
333 | { | |
334 | /* Get the old request back */ | |
335 | restoreState(); | |
336 | /* here the data to send is in the next nodes buffers already */ | |
86a2f789 | 337 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 338 | /* sendMoreData tracks the offset as well. |
339 | * Force it back to zero */ | |
340 | reqofs = 0; | |
341 | StoreIOBuffer tempresult (reqsize, reqofs, next()->readBuffer.data); | |
342 | sendMoreData(tempresult); | |
343 | } | |
62e76326 | 344 | |
1d7ab0f4 | 345 | /* This is the workhorse of the HandleIMSReply callback. |
346 | * | |
347 | * It is called when we've got data back from the origin following our | |
348 | * IMS request to revalidate a stale entry. | |
349 | */ | |
0655fa4d | 350 | void |
1d7ab0f4 | 351 | clientReplyContext::handleIMSReply(StoreIOBuffer result) |
0655fa4d | 352 | { |
1d7ab0f4 | 353 | if (deleting) |
354 | return; | |
62e76326 | 355 | |
bf8fe701 | 356 | debugs(88, 3, "handleIMSReply: " << http->storeEntry()->url() << ", " << (long unsigned) result.length << " bytes" ); |
62e76326 | 357 | |
1d7ab0f4 | 358 | if (http->storeEntry() == NULL) |
359 | return; | |
07947ad8 | 360 | |
1d7ab0f4 | 361 | if (result.flags.error && !EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) |
362 | return; | |
62e76326 | 363 | |
1d7ab0f4 | 364 | /* update size of the request */ |
365 | reqsize = result.length + reqofs; | |
62e76326 | 366 | |
9b769c67 | 367 | const Http::StatusCode status = http->storeEntry()->getReply()->sline.status(); |
62e76326 | 368 | |
1d7ab0f4 | 369 | // request to origin was aborted |
370 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) { | |
bf8fe701 | 371 | debugs(88, 3, "handleIMSReply: request to origin aborted '" << http->storeEntry()->url() << "', sending old entry to client" ); |
7948b784 | 372 | http->logType = LOG_TCP_REFRESH_FAIL_OLD; |
1d7ab0f4 | 373 | sendClientOldEntry(); |
0655fa4d | 374 | } |
62e76326 | 375 | |
b297bcd0 | 376 | HttpReply *old_rep = (HttpReply *) old_entry->getReply(); |
62e76326 | 377 | |
b297bcd0 | 378 | // origin replied 304 |
955394ce | 379 | if (status == Http::scNotModified) { |
26ac0430 | 380 | http->logType = LOG_TCP_REFRESH_UNMODIFIED; |
e857372a | 381 | http->request->flags.staleIfHit = false; // old_entry is no longer stale |
045a76ab | 382 | |
26ac0430 | 383 | // update headers on existing entry |
4802f60d | 384 | old_rep->updateOnNotModified(http->storeEntry()->getReply()); |
26ac0430 | 385 | old_entry->timestampsSet(); |
62e76326 | 386 | |
26ac0430 | 387 | // if client sent IMS |
62e76326 | 388 | |
45e5102d | 389 | if (http->request->flags.ims && !old_entry->modifiedSince(http->request)) { |
26ac0430 AJ |
390 | // forward the 304 from origin |
391 | debugs(88, 3, "handleIMSReply: origin replied 304, revalidating existing entry and forwarding 304 to client"); | |
392 | sendClientUpstreamResponse(); | |
393 | } else { | |
394 | // send existing entry, it's still valid | |
395 | debugs(88, 3, "handleIMSReply: origin replied 304, revalidating existing entry and sending " << | |
9b769c67 | 396 | old_rep->sline.status() << " to client"); |
26ac0430 AJ |
397 | sendClientOldEntry(); |
398 | } | |
b297bcd0 | 399 | } |
62e76326 | 400 | |
b297bcd0 | 401 | // origin replied with a non-error code |
955394ce | 402 | else if (status > Http::scNone && status < Http::scInternalServerError) { |
26ac0430 AJ |
403 | // forward response from origin |
404 | http->logType = LOG_TCP_REFRESH_MODIFIED; | |
405 | debugs(88, 3, "handleIMSReply: origin replied " << status << ", replacing existing entry and forwarding to client"); | |
406 | sendClientUpstreamResponse(); | |
b297bcd0 | 407 | } |
62e76326 | 408 | |
b297bcd0 | 409 | // origin replied with an error |
450fe1cb | 410 | else if (http->request->flags.failOnValidationError) { |
7948b784 AR |
411 | http->logType = LOG_TCP_REFRESH_FAIL_ERR; |
412 | debugs(88, 3, "handleIMSReply: origin replied with error " << status << | |
413 | ", forwarding to client due to fail_on_validation_err"); | |
414 | sendClientUpstreamResponse(); | |
415 | } else { | |
26ac0430 | 416 | // ignore and let client have old entry |
7948b784 | 417 | http->logType = LOG_TCP_REFRESH_FAIL_OLD; |
26ac0430 | 418 | debugs(88, 3, "handleIMSReply: origin replied with error " << |
9b769c67 | 419 | status << ", sending old entry (" << old_rep->sline.status() << ") to client"); |
26ac0430 | 420 | sendClientOldEntry(); |
1d7ab0f4 | 421 | } |
edce4d98 | 422 | } |
423 | ||
82afb125 FC |
424 | SQUIDCEXTERN CSR clientGetMoreData; |
425 | SQUIDCEXTERN CSD clientReplyDetach; | |
edce4d98 | 426 | |
7d5f62a4 AJ |
427 | /** |
428 | * clientReplyContext::cacheHit Should only be called until the HTTP reply headers | |
edce4d98 | 429 | * have been parsed. Normally this should be a single call, but |
430 | * it might take more than one. As soon as we have the headers, | |
0655fa4d | 431 | * we hand off to clientSendMoreData, processExpired, or |
432 | * processMiss. | |
edce4d98 | 433 | */ |
434 | void | |
0655fa4d | 435 | clientReplyContext::CacheHit(void *data, StoreIOBuffer result) |
edce4d98 | 436 | { |
e6ccf245 | 437 | clientReplyContext *context = (clientReplyContext *)data; |
7d5f62a4 | 438 | context->cacheHit(result); |
0655fa4d | 439 | } |
440 | ||
7d5f62a4 AJ |
441 | /** |
442 | * Process a possible cache HIT. | |
443 | */ | |
0655fa4d | 444 | void |
445 | clientReplyContext::cacheHit(StoreIOBuffer result) | |
446 | { | |
7d5f62a4 | 447 | /** Ignore if the HIT object is being deleted. */ |
045a76ab | 448 | if (deleting) |
449 | return; | |
450 | ||
86a2f789 | 451 | StoreEntry *e = http->storeEntry(); |
045a76ab | 452 | |
190154cf | 453 | HttpRequest *r = http->request; |
045a76ab | 454 | |
4a7a3d56 | 455 | debugs(88, 3, "clientCacheHit: " << http->uri << ", " << result.length << " bytes"); |
62e76326 | 456 | |
86a2f789 | 457 | if (http->storeEntry() == NULL) { |
bf8fe701 | 458 | debugs(88, 3, "clientCacheHit: request aborted"); |
62e76326 | 459 | return; |
c8be6d7b | 460 | } else if (result.flags.error) { |
62e76326 | 461 | /* swap in failure */ |
bf8fe701 | 462 | debugs(88, 3, "clientCacheHit: swapin failure for " << http->uri); |
62e76326 | 463 | http->logType = LOG_TCP_SWAPFAIL_MISS; |
86a2f789 | 464 | removeClientStoreReference(&sc, http); |
0655fa4d | 465 | processMiss(); |
62e76326 | 466 | return; |
edce4d98 | 467 | } |
62e76326 | 468 | |
d3b3ab85 | 469 | if (result.length == 0) { |
62e76326 | 470 | /* the store couldn't get enough data from the file for us to id the |
471 | * object | |
472 | */ | |
473 | /* treat as a miss */ | |
474 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 475 | processMiss(); |
62e76326 | 476 | return; |
d3b3ab85 | 477 | } |
62e76326 | 478 | |
edce4d98 | 479 | assert(!EBIT_TEST(e->flags, ENTRY_ABORTED)); |
480 | /* update size of the request */ | |
0655fa4d | 481 | reqsize = result.length + reqofs; |
62e76326 | 482 | |
edce4d98 | 483 | /* |
484 | * Got the headers, now grok them | |
485 | */ | |
29b8d8d6 | 486 | assert(http->logType == LOG_TCP_HIT); |
62e76326 | 487 | |
a8a0b1c2 EC |
488 | if (strcmp(e->mem_obj->url, http->request->storeId()) != 0) { |
489 | debugs(33, DBG_IMPORTANT, "clientProcessHit: URL mismatch, '" << e->mem_obj->url << "' != '" << http->request->storeId() << "'"); | |
3e1f4024 | 490 | http->logType = LOG_TCP_MISS; // we lack a more precise LOG_*_MISS code |
cdd4e1c1 | 491 | processMiss(); |
492 | return; | |
493 | } | |
494 | ||
edce4d98 | 495 | switch (varyEvaluateMatch(e, r)) { |
62e76326 | 496 | |
edce4d98 | 497 | case VARY_NONE: |
62e76326 | 498 | /* No variance detected. Continue as normal */ |
499 | break; | |
500 | ||
edce4d98 | 501 | case VARY_MATCH: |
62e76326 | 502 | /* This is the correct entity for this request. Continue */ |
bf8fe701 | 503 | debugs(88, 2, "clientProcessHit: Vary MATCH!"); |
62e76326 | 504 | break; |
505 | ||
edce4d98 | 506 | case VARY_OTHER: |
62e76326 | 507 | /* This is not the correct entity for this request. We need |
508 | * to requery the cache. | |
509 | */ | |
86a2f789 | 510 | removeClientStoreReference(&sc, http); |
62e76326 | 511 | e = NULL; |
512 | /* Note: varyEvalyateMatch updates the request with vary information | |
513 | * so we only get here once. (it also takes care of cancelling loops) | |
514 | */ | |
26ac0430 | 515 | debugs(88, 2, "clientProcessHit: Vary detected!"); |
0655fa4d | 516 | clientGetMoreData(ourNode, http); |
62e76326 | 517 | return; |
518 | ||
edce4d98 | 519 | case VARY_CANCEL: |
62e76326 | 520 | /* varyEvaluateMatch found a object loop. Process as miss */ |
e0236918 | 521 | debugs(88, DBG_IMPORTANT, "clientProcessHit: Vary object loop!"); |
3e1f4024 | 522 | http->logType = LOG_TCP_MISS; // we lack a more precise LOG_*_MISS code |
0655fa4d | 523 | processMiss(); |
62e76326 | 524 | return; |
edce4d98 | 525 | } |
62e76326 | 526 | |
c2a7cefd | 527 | if (r->method == Http::METHOD_PURGE) { |
86a2f789 | 528 | removeClientStoreReference(&sc, http); |
62e76326 | 529 | e = NULL; |
0655fa4d | 530 | purgeRequest(); |
62e76326 | 531 | return; |
edce4d98 | 532 | } |
62e76326 | 533 | |
45e5102d | 534 | if (e->checkNegativeHit() |
450fe1cb | 535 | && !r->flags.noCacheHack() |
36e6655b | 536 | ) { |
62e76326 | 537 | http->logType = LOG_TCP_NEGATIVE_HIT; |
0655fa4d | 538 | sendMoreData(result); |
bcfba8bd | 539 | } else if (!http->flags.internal && refreshCheckHTTP(e, r)) { |
bf8fe701 | 540 | debugs(88, 5, "clientCacheHit: in refreshCheck() block"); |
62e76326 | 541 | /* |
542 | * We hold a stale copy; it needs to be validated | |
543 | */ | |
544 | /* | |
450fe1cb | 545 | * The 'needValidation' flag is used to prevent forwarding |
62e76326 | 546 | * loops between siblings. If our copy of the object is stale, |
547 | * then we should probably only use parents for the validation | |
548 | * request. Otherwise two siblings could generate a loop if | |
549 | * both have a stale version of the object. | |
550 | */ | |
e857372a | 551 | r->flags.needValidation = true; |
62e76326 | 552 | |
553 | if (e->lastmod < 0) { | |
86310427 | 554 | debugs(88, 3, "validate HIT object? NO. Missing Last-Modified header. Do MISS."); |
62e76326 | 555 | /* |
556 | * Previous reply didn't have a Last-Modified header, | |
557 | * we cannot revalidate it. | |
558 | */ | |
559 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 560 | processMiss(); |
450fe1cb | 561 | } else if (r->flags.noCache) { |
86310427 | 562 | debugs(88, 3, "validate HIT object? NO. Client sent CC:no-cache. Do CLIENT_REFRESH_MISS"); |
62e76326 | 563 | /* |
564 | * This did not match a refresh pattern that overrides no-cache | |
565 | * we should honour the client no-cache header. | |
566 | */ | |
567 | http->logType = LOG_TCP_CLIENT_REFRESH_MISS; | |
0655fa4d | 568 | processMiss(); |
0c3d3f65 | 569 | } else if (r->protocol == AnyP::PROTO_HTTP) { |
86310427 | 570 | debugs(88, 3, "validate HIT object? YES."); |
62e76326 | 571 | /* |
572 | * Object needs to be revalidated | |
573 | * XXX This could apply to FTP as well, if Last-Modified is known. | |
574 | */ | |
0655fa4d | 575 | processExpired(); |
62e76326 | 576 | } else { |
86310427 | 577 | debugs(88, 3, "validate HIT object? NO. Client protocol non-HTTP. Do MISS."); |
62e76326 | 578 | /* |
579 | * We don't know how to re-validate other protocols. Handle | |
580 | * them as if the object has expired. | |
581 | */ | |
582 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 583 | processMiss(); |
62e76326 | 584 | } |
79c8035e AR |
585 | } else if (r->conditional()) |
586 | processConditional(result); | |
587 | else { | |
62e76326 | 588 | /* |
589 | * plain ol' cache hit | |
590 | */ | |
591 | ||
9a0a18de | 592 | #if USE_DELAY_POOLS |
ffdf45f2 | 593 | if (e->store_status != STORE_OK) |
849b826a | 594 | http->logType = LOG_TCP_MISS; |
5bf4d170 | 595 | else |
596 | #endif | |
26ac0430 AJ |
597 | if (e->mem_status == IN_MEMORY) |
598 | http->logType = LOG_TCP_MEM_HIT; | |
599 | else if (Config.onoff.offline) | |
600 | http->logType = LOG_TCP_OFFLINE_HIT; | |
62e76326 | 601 | |
0655fa4d | 602 | sendMoreData(result); |
edce4d98 | 603 | } |
604 | } | |
605 | ||
7d5f62a4 | 606 | /** |
edce4d98 | 607 | * Prepare to fetch the object as it's a cache miss of some kind. |
608 | */ | |
609 | void | |
0655fa4d | 610 | clientReplyContext::processMiss() |
edce4d98 | 611 | { |
edce4d98 | 612 | char *url = http->uri; |
190154cf | 613 | HttpRequest *r = http->request; |
edce4d98 | 614 | ErrorState *err = NULL; |
60745f24 | 615 | debugs(88, 4, "clientProcessMiss: '" << RequestMethodStr(r->method) << " " << url << "'"); |
7d5f62a4 AJ |
616 | |
617 | /** | |
edce4d98 | 618 | * We might have a left-over StoreEntry from a failed cache hit |
619 | * or IMS request. | |
620 | */ | |
86a2f789 | 621 | if (http->storeEntry()) { |
622 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_SPECIAL)) { | |
fa84c01d | 623 | debugs(88, DBG_CRITICAL, "clientProcessMiss: miss on a special object (" << url << ")."); |
02c8dde5 | 624 | debugs(88, DBG_CRITICAL, "\tlog_type = " << LogTags_str[http->logType]); |
3900307b | 625 | http->storeEntry()->dump(1); |
62e76326 | 626 | } |
627 | ||
86a2f789 | 628 | removeClientStoreReference(&sc, http); |
edce4d98 | 629 | } |
62e76326 | 630 | |
7d5f62a4 | 631 | /** Check if its a PURGE request to be actioned. */ |
c2a7cefd | 632 | if (r->method == Http::METHOD_PURGE) { |
0655fa4d | 633 | purgeRequest(); |
62e76326 | 634 | return; |
edce4d98 | 635 | } |
914b89a2 | 636 | |
7d5f62a4 | 637 | /** Check if its an 'OTHER' request. Purge all cached entries if so and continue. */ |
c2a7cefd | 638 | if (r->method == Http::METHOD_OTHER) { |
26ac0430 | 639 | purgeAllCached(); |
60745f24 | 640 | } |
62e76326 | 641 | |
7d5f62a4 | 642 | /** Check if 'only-if-cached' flag is set. Action if so. */ |
0655fa4d | 643 | if (http->onlyIfCached()) { |
644 | processOnlyIfCachedMiss(); | |
62e76326 | 645 | return; |
edce4d98 | 646 | } |
62e76326 | 647 | |
42829656 | 648 | /// Deny loops |
450fe1cb | 649 | if (r->flags.loopDetected) { |
955394ce AJ |
650 | http->al->http.code = Http::scForbidden; |
651 | err = clientBuildError(ERR_ACCESS_DENIED, Http::scForbidden, NULL, http->getConn()->clientConnection->remote, http->request); | |
f206b652 | 652 | createStoreEntry(r->method, RequestFlags()); |
86a2f789 | 653 | errorAppendEntry(http->storeEntry(), err); |
0655fa4d | 654 | triggerInitialStoreRead(); |
62e76326 | 655 | return; |
edce4d98 | 656 | } else { |
26ac0430 | 657 | assert(http->out.offset == 0); |
0655fa4d | 658 | createStoreEntry(r->method, r->flags); |
659 | triggerInitialStoreRead(); | |
62e76326 | 660 | |
661 | if (http->redirect.status) { | |
06a5ae20 | 662 | HttpReply *rep = new HttpReply; |
62e76326 | 663 | http->logType = LOG_TCP_REDIRECT; |
d88e3c49 | 664 | http->storeEntry()->releaseRequest(); |
06a5ae20 | 665 | rep->redirect(http->redirect.status, http->redirect.location); |
db237875 | 666 | http->storeEntry()->replaceHttpReply(rep); |
86a2f789 | 667 | http->storeEntry()->complete(); |
62e76326 | 668 | return; |
669 | } | |
670 | ||
7d5f62a4 | 671 | /** Check for internal requests. Update Protocol info if so. */ |
62e76326 | 672 | if (http->flags.internal) |
0c3d3f65 | 673 | r->protocol = AnyP::PROTO_INTERNAL; |
62e76326 | 674 | |
9174ba3d | 675 | assert(r->clientConnectionManager == http->getConn()); |
655daa06 | 676 | |
7d5f62a4 | 677 | /** Start forwarding to get the new object from network */ |
73c36fd9 | 678 | Comm::ConnectionPointer conn = http->getConn() != NULL ? http->getConn()->clientConnection : NULL; |
4bf68cfa | 679 | FwdState::Start(conn, http->storeEntry(), r, http->al); |
edce4d98 | 680 | } |
681 | } | |
682 | ||
7d5f62a4 | 683 | /** |
edce4d98 | 684 | * client issued a request with an only-if-cached cache-control directive; |
685 | * we did not find a cached object that can be returned without | |
686 | * contacting other servers; | |
687 | * respond with a 504 (Gateway Timeout) as suggested in [RFC 2068] | |
688 | */ | |
0655fa4d | 689 | void |
690 | clientReplyContext::processOnlyIfCachedMiss() | |
edce4d98 | 691 | { |
bf8fe701 | 692 | debugs(88, 4, "clientProcessOnlyIfCachedMiss: '" << |
60745f24 | 693 | RequestMethodStr(http->request->method) << " " << http->uri << "'"); |
955394ce AJ |
694 | http->al->http.code = Http::scGateway_Timeout; |
695 | ErrorState *err = clientBuildError(ERR_ONLY_IF_CACHED_MISS, Http::scGateway_Timeout, NULL, | |
73c36fd9 | 696 | http->getConn()->clientConnection->remote, http->request); |
86a2f789 | 697 | removeClientStoreReference(&sc, http); |
0655fa4d | 698 | startError(err); |
edce4d98 | 699 | } |
700 | ||
79c8035e AR |
701 | /// process conditional request from client |
702 | void | |
703 | clientReplyContext::processConditional(StoreIOBuffer &result) | |
704 | { | |
a2bd457d | 705 | StoreEntry *const e = http->storeEntry(); |
79c8035e | 706 | |
9b769c67 | 707 | if (e->getReply()->sline.status() != Http::scOkay) { |
79c8035e | 708 | debugs(88, 4, "clientReplyContext::processConditional: Reply code " << |
9b769c67 | 709 | e->getReply()->sline.status() << " != 200"); |
79c8035e AR |
710 | http->logType = LOG_TCP_MISS; |
711 | processMiss(); | |
712 | return; | |
713 | } | |
714 | ||
715 | HttpRequest &r = *http->request; | |
716 | ||
717 | if (r.header.has(HDR_IF_MATCH) && !e->hasIfMatchEtag(r)) { | |
718 | // RFC 2616: reply with 412 Precondition Failed if If-Match did not match | |
719 | sendPreconditionFailedError(); | |
720 | return; | |
721 | } | |
722 | ||
723 | bool matchedIfNoneMatch = false; | |
724 | if (r.header.has(HDR_IF_NONE_MATCH)) { | |
725 | if (!e->hasIfNoneMatchEtag(r)) { | |
726 | // RFC 2616: ignore IMS if If-None-Match did not match | |
e857372a | 727 | r.flags.ims = false; |
79c8035e AR |
728 | r.ims = -1; |
729 | r.imslen = 0; | |
730 | r.header.delById(HDR_IF_MODIFIED_SINCE); | |
731 | http->logType = LOG_TCP_MISS; | |
732 | sendMoreData(result); | |
733 | return; | |
734 | } | |
735 | ||
45e5102d | 736 | if (!r.flags.ims) { |
79c8035e | 737 | // RFC 2616: if If-None-Match matched and there is no IMS, |
a2bd457d AJ |
738 | // reply with 304 Not Modified or 412 Precondition Failed |
739 | sendNotModifiedOrPreconditionFailedError(); | |
79c8035e AR |
740 | return; |
741 | } | |
742 | ||
a2bd457d | 743 | // otherwise check IMS below to decide if we reply with 304 or 412 |
79c8035e AR |
744 | matchedIfNoneMatch = true; |
745 | } | |
746 | ||
45e5102d | 747 | if (r.flags.ims) { |
79c8035e AR |
748 | // handle If-Modified-Since requests from the client |
749 | if (e->modifiedSince(&r)) { | |
750 | http->logType = LOG_TCP_IMS_HIT; | |
751 | sendMoreData(result); | |
752 | return; | |
753 | } | |
754 | ||
755 | if (matchedIfNoneMatch) { | |
a2bd457d AJ |
756 | // If-None-Match matched, reply with 304 Not Modified or |
757 | // 412 Precondition Failed | |
758 | sendNotModifiedOrPreconditionFailedError(); | |
79c8035e AR |
759 | return; |
760 | } | |
761 | ||
762 | // otherwise reply with 304 Not Modified | |
a2bd457d | 763 | sendNotModified(); |
79c8035e AR |
764 | } |
765 | } | |
766 | ||
edce4d98 | 767 | void |
e6ccf245 | 768 | clientReplyContext::purgeRequestFindObjectToPurge() |
26ac0430 | 769 | { |
e6ccf245 | 770 | /* Try to find a base entry */ |
be4d35dc | 771 | http->flags.purging = true; |
e6ccf245 | 772 | lookingforstore = 1; |
26ac0430 AJ |
773 | |
774 | // TODO: can we use purgeAllCached() here instead of doing the | |
775 | // getPublicByRequestMethod() dance? | |
c2a7cefd | 776 | StoreEntry::getPublicByRequestMethod(this, http->request, Http::METHOD_GET); |
e6ccf245 | 777 | } |
778 | ||
c1520b67 AJ |
779 | // Purges all entries with a given url |
780 | // TODO: move to SideAgent parent, when we have one | |
60745f24 | 781 | /* |
782 | * We probably cannot purge Vary-affected responses because their MD5 | |
783 | * keys depend on vary headers. | |
784 | */ | |
c1520b67 | 785 | void |
90bd689c | 786 | purgeEntriesByUrl(HttpRequest * req, const char *url) |
c1520b67 | 787 | { |
8dceeee3 BR |
788 | #if USE_HTCP |
789 | bool get_or_head_sent = false; | |
790 | #endif | |
26ac0430 | 791 | |
c2a7cefd AJ |
792 | for (HttpRequestMethod m(Http::METHOD_NONE); m != Http::METHOD_ENUM_END; ++m) { |
793 | if (m.respMaybeCacheable()) { | |
c1520b67 AJ |
794 | if (StoreEntry *entry = storeGetPublic(url, m)) { |
795 | debugs(88, 5, "purging " << RequestMethodStr(m) << ' ' << url); | |
90bd689c | 796 | #if USE_HTCP |
8dceeee3 | 797 | neighborsHtcpClear(entry, url, req, m, HTCP_CLR_INVALIDATION); |
c2a7cefd | 798 | if (m == Http::METHOD_GET || m == Http::METHOD_HEAD) { |
8dceeee3 BR |
799 | get_or_head_sent = true; |
800 | } | |
90bd689c | 801 | #endif |
8dceeee3 | 802 | entry->release(); |
c1520b67 AJ |
803 | } |
804 | } | |
805 | } | |
8dceeee3 BR |
806 | |
807 | #if USE_HTCP | |
808 | if (!get_or_head_sent) { | |
c2a7cefd | 809 | neighborsHtcpClear(NULL, url, req, HttpRequestMethod(Http::METHOD_GET), HTCP_CLR_INVALIDATION); |
8dceeee3 BR |
810 | } |
811 | #endif | |
c1520b67 AJ |
812 | } |
813 | ||
26ac0430 | 814 | void |
60745f24 | 815 | clientReplyContext::purgeAllCached() |
816 | { | |
26ac0430 | 817 | const char *url = urlCanonical(http->request); |
90bd689c | 818 | purgeEntriesByUrl(http->request, url); |
35ececa5 | 819 | } |
60745f24 | 820 | |
e6ccf245 | 821 | void |
3b13a8fd | 822 | clientReplyContext::created(StoreEntry *newEntry) |
e6ccf245 | 823 | { |
824 | if (lookingforstore == 1) | |
62e76326 | 825 | purgeFoundGet(newEntry); |
e6ccf245 | 826 | else if (lookingforstore == 2) |
62e76326 | 827 | purgeFoundHead(newEntry); |
e6ccf245 | 828 | else if (lookingforstore == 3) |
62e76326 | 829 | purgeDoPurgeGet(newEntry); |
e6ccf245 | 830 | else if (lookingforstore == 4) |
62e76326 | 831 | purgeDoPurgeHead(newEntry); |
e6ccf245 | 832 | else if (lookingforstore == 5) |
62e76326 | 833 | identifyFoundObject(newEntry); |
e6ccf245 | 834 | } |
835 | ||
836 | void | |
3b13a8fd | 837 | clientReplyContext::purgeFoundGet(StoreEntry *newEntry) |
e6ccf245 | 838 | { |
839 | if (newEntry->isNull()) { | |
62e76326 | 840 | lookingforstore = 2; |
c2a7cefd | 841 | StoreEntry::getPublicByRequestMethod(this, http->request, Http::METHOD_HEAD); |
e6ccf245 | 842 | } else |
62e76326 | 843 | purgeFoundObject (newEntry); |
e6ccf245 | 844 | } |
845 | ||
846 | void | |
3b13a8fd | 847 | clientReplyContext::purgeFoundHead(StoreEntry *newEntry) |
e6ccf245 | 848 | { |
849 | if (newEntry->isNull()) | |
62e76326 | 850 | purgeDoMissPurge(); |
e6ccf245 | 851 | else |
62e76326 | 852 | purgeFoundObject (newEntry); |
e6ccf245 | 853 | } |
62e76326 | 854 | |
e6ccf245 | 855 | void |
3b13a8fd | 856 | clientReplyContext::purgeFoundObject(StoreEntry *entry) |
e6ccf245 | 857 | { |
858 | assert (entry && !entry->isNull()); | |
e4b9a2f0 | 859 | |
860 | if (EBIT_TEST(entry->flags, ENTRY_SPECIAL)) { | |
861 | http->logType = LOG_TCP_DENIED; | |
955394ce | 862 | ErrorState *err = clientBuildError(ERR_ACCESS_DENIED, Http::scForbidden, NULL, |
73c36fd9 | 863 | http->getConn()->clientConnection->remote, http->request); |
e4b9a2f0 | 864 | startError(err); |
865 | return; | |
866 | } | |
867 | ||
8bcf08e0 | 868 | StoreIOBuffer localTempBuffer; |
62e76326 | 869 | /* Swap in the metadata */ |
86a2f789 | 870 | http->storeEntry(entry); |
34266cde | 871 | |
3d0ac046 | 872 | http->storeEntry()->lock(); |
a8a0b1c2 | 873 | http->storeEntry()->createMemObject(storeId(), http->log_uri); |
34266cde | 874 | |
86a2f789 | 875 | http->storeEntry()->mem_obj->method = http->request->method; |
34266cde | 876 | |
86a2f789 | 877 | sc = storeClientListAdd(http->storeEntry(), this); |
34266cde | 878 | |
62e76326 | 879 | http->logType = LOG_TCP_HIT; |
34266cde | 880 | |
62e76326 | 881 | reqofs = 0; |
34266cde | 882 | |
8bcf08e0 | 883 | localTempBuffer.offset = http->out.offset; |
34266cde | 884 | |
8bcf08e0 | 885 | localTempBuffer.length = next()->readBuffer.length; |
34266cde | 886 | |
8bcf08e0 | 887 | localTempBuffer.data = next()->readBuffer.data; |
34266cde | 888 | |
86a2f789 | 889 | storeClientCopy(sc, http->storeEntry(), |
8bcf08e0 | 890 | localTempBuffer, CacheHit, this); |
e6ccf245 | 891 | } |
892 | ||
893 | void | |
894 | clientReplyContext::purgeRequest() | |
edce4d98 | 895 | { |
bf8fe701 | 896 | debugs(88, 3, "Config2.onoff.enable_purge = " << |
897 | Config2.onoff.enable_purge); | |
62e76326 | 898 | |
edce4d98 | 899 | if (!Config2.onoff.enable_purge) { |
62e76326 | 900 | http->logType = LOG_TCP_DENIED; |
955394ce | 901 | ErrorState *err = clientBuildError(ERR_ACCESS_DENIED, Http::scForbidden, NULL, http->getConn()->clientConnection->remote, http->request); |
0655fa4d | 902 | startError(err); |
62e76326 | 903 | return; |
edce4d98 | 904 | } |
62e76326 | 905 | |
edce4d98 | 906 | /* Release both IP cache */ |
cc192b50 | 907 | ipcacheInvalidate(http->request->GetHost()); |
edce4d98 | 908 | |
e6ccf245 | 909 | if (!http->flags.purging) |
62e76326 | 910 | purgeRequestFindObjectToPurge(); |
e6ccf245 | 911 | else |
62e76326 | 912 | purgeDoMissPurge(); |
e6ccf245 | 913 | } |
914 | ||
915 | void | |
916 | clientReplyContext::purgeDoMissPurge() | |
917 | { | |
29b8d8d6 | 918 | http->logType = LOG_TCP_MISS; |
e6ccf245 | 919 | lookingforstore = 3; |
c2a7cefd | 920 | StoreEntry::getPublicByRequestMethod(this,http->request, Http::METHOD_GET); |
e6ccf245 | 921 | } |
922 | ||
923 | void | |
3b13a8fd | 924 | clientReplyContext::purgeDoPurgeGet(StoreEntry *newEntry) |
e6ccf245 | 925 | { |
926 | assert (newEntry); | |
927 | /* Move to new() when that is created */ | |
955394ce | 928 | purgeStatus = Http::scNotFound; |
e6ccf245 | 929 | |
930 | if (!newEntry->isNull()) { | |
62e76326 | 931 | /* Release the cached URI */ |
bf8fe701 | 932 | debugs(88, 4, "clientPurgeRequest: GET '" << newEntry->url() << "'" ); |
8dceeee3 | 933 | #if USE_HTCP |
c2a7cefd | 934 | neighborsHtcpClear(newEntry, NULL, http->request, HttpRequestMethod(Http::METHOD_GET), HTCP_CLR_PURGE); |
8dceeee3 | 935 | #endif |
5f33b71d | 936 | newEntry->release(); |
955394ce | 937 | purgeStatus = Http::scOkay; |
edce4d98 | 938 | } |
62e76326 | 939 | |
e6ccf245 | 940 | lookingforstore = 4; |
c2a7cefd | 941 | StoreEntry::getPublicByRequestMethod(this, http->request, Http::METHOD_HEAD); |
e6ccf245 | 942 | } |
943 | ||
944 | void | |
3b13a8fd | 945 | clientReplyContext::purgeDoPurgeHead(StoreEntry *newEntry) |
e6ccf245 | 946 | { |
4fc0ac76 | 947 | if (newEntry && !newEntry->isNull()) { |
bf8fe701 | 948 | debugs(88, 4, "clientPurgeRequest: HEAD '" << newEntry->url() << "'" ); |
8dceeee3 | 949 | #if USE_HTCP |
c2a7cefd | 950 | neighborsHtcpClear(newEntry, NULL, http->request, HttpRequestMethod(Http::METHOD_HEAD), HTCP_CLR_PURGE); |
8dceeee3 | 951 | #endif |
5f33b71d | 952 | newEntry->release(); |
955394ce | 953 | purgeStatus = Http::scOkay; |
edce4d98 | 954 | } |
62e76326 | 955 | |
edce4d98 | 956 | /* And for Vary, release the base URI if none of the headers was included in the request */ |
62e76326 | 957 | |
edce4d98 | 958 | if (http->request->vary_headers |
62e76326 | 959 | && !strstr(http->request->vary_headers, "=")) { |
c2a7cefd | 960 | StoreEntry *entry = storeGetPublic(urlCanonical(http->request), Http::METHOD_GET); |
62e76326 | 961 | |
962 | if (entry) { | |
bf8fe701 | 963 | debugs(88, 4, "clientPurgeRequest: Vary GET '" << entry->url() << "'" ); |
8dceeee3 | 964 | #if USE_HTCP |
c2a7cefd | 965 | neighborsHtcpClear(entry, NULL, http->request, HttpRequestMethod(Http::METHOD_GET), HTCP_CLR_PURGE); |
8dceeee3 | 966 | #endif |
5f33b71d | 967 | entry->release(); |
955394ce | 968 | purgeStatus = Http::scOkay; |
62e76326 | 969 | } |
970 | ||
c2a7cefd | 971 | entry = storeGetPublic(urlCanonical(http->request), Http::METHOD_HEAD); |
62e76326 | 972 | |
973 | if (entry) { | |
bf8fe701 | 974 | debugs(88, 4, "clientPurgeRequest: Vary HEAD '" << entry->url() << "'" ); |
8dceeee3 | 975 | #if USE_HTCP |
c2a7cefd | 976 | neighborsHtcpClear(entry, NULL, http->request, HttpRequestMethod(Http::METHOD_HEAD), HTCP_CLR_PURGE); |
8dceeee3 | 977 | #endif |
5f33b71d | 978 | entry->release(); |
955394ce | 979 | purgeStatus = Http::scOkay; |
62e76326 | 980 | } |
edce4d98 | 981 | } |
62e76326 | 982 | |
edce4d98 | 983 | /* |
984 | * Make a new entry to hold the reply to be written | |
985 | * to the client. | |
986 | */ | |
528b2c61 | 987 | /* FIXME: This doesn't need to go through the store. Simply |
988 | * push down the client chain | |
989 | */ | |
f206b652 | 990 | createStoreEntry(http->request->method, RequestFlags()); |
62e76326 | 991 | |
0655fa4d | 992 | triggerInitialStoreRead(); |
62e76326 | 993 | |
7dc5f514 | 994 | HttpReply *rep = new HttpReply; |
11992b6f | 995 | rep->setHeaders(purgeStatus, NULL, NULL, 0, 0, -1); |
7dc5f514 | 996 | http->storeEntry()->replaceHttpReply(rep); |
86a2f789 | 997 | http->storeEntry()->complete(); |
edce4d98 | 998 | } |
999 | ||
1000 | void | |
0655fa4d | 1001 | clientReplyContext::traceReply(clientStreamNode * node) |
edce4d98 | 1002 | { |
076df709 | 1003 | clientStreamNode *nextNode = (clientStreamNode *)node->node.next->data; |
8bcf08e0 | 1004 | StoreIOBuffer localTempBuffer; |
f206b652 | 1005 | createStoreEntry(http->request->method, RequestFlags()); |
076df709 FC |
1006 | localTempBuffer.offset = nextNode->readBuffer.offset + headers_sz; |
1007 | localTempBuffer.length = nextNode->readBuffer.length; | |
1008 | localTempBuffer.data = nextNode->readBuffer.data; | |
86a2f789 | 1009 | storeClientCopy(sc, http->storeEntry(), |
8bcf08e0 | 1010 | localTempBuffer, SendMoreData, this); |
d88e3c49 | 1011 | http->storeEntry()->releaseRequest(); |
3900307b | 1012 | http->storeEntry()->buffer(); |
7dc5f514 | 1013 | HttpReply *rep = new HttpReply; |
955394ce | 1014 | rep->setHeaders(Http::scOkay, NULL, "text/plain", http->request->prefixLen(), 0, squid_curtime); |
db237875 | 1015 | http->storeEntry()->replaceHttpReply(rep); |
5cafad19 | 1016 | http->request->swapOut(http->storeEntry()); |
86a2f789 | 1017 | http->storeEntry()->complete(); |
edce4d98 | 1018 | } |
1019 | ||
1020 | #define SENDING_BODY 0 | |
1021 | #define SENDING_HDRSONLY 1 | |
1022 | int | |
0655fa4d | 1023 | clientReplyContext::checkTransferDone() |
edce4d98 | 1024 | { |
86a2f789 | 1025 | StoreEntry *entry = http->storeEntry(); |
62e76326 | 1026 | |
edce4d98 | 1027 | if (entry == NULL) |
62e76326 | 1028 | return 0; |
1029 | ||
1030 | /* | |
edce4d98 | 1031 | * For now, 'done_copying' is used for special cases like |
1032 | * Range and HEAD requests. | |
1033 | */ | |
0655fa4d | 1034 | if (http->flags.done_copying) |
62e76326 | 1035 | return 1; |
1036 | ||
450fe1cb | 1037 | if (http->request->flags.chunkedReply && !flags.complete) { |
4ad60609 AR |
1038 | // last-chunk was not sent |
1039 | return 0; | |
1040 | } | |
1041 | ||
edce4d98 | 1042 | /* |
1043 | * Handle STORE_OK objects. | |
1044 | * objectLen(entry) will be set proprely. | |
26ac0430 | 1045 | * RC: Does objectLen(entry) include the Headers? |
0e3be1ea | 1046 | * RC: Yes. |
edce4d98 | 1047 | */ |
1048 | if (entry->store_status == STORE_OK) { | |
0655fa4d | 1049 | return storeOKTransferDone(); |
e39b9382 | 1050 | } else { |
0655fa4d | 1051 | return storeNotOKTransferDone(); |
edce4d98 | 1052 | } |
e39b9382 | 1053 | } |
1054 | ||
1055 | int | |
1056 | clientReplyContext::storeOKTransferDone() const | |
1057 | { | |
aa1a691e AR |
1058 | assert(http->storeEntry()->objectLen() >= 0); |
1059 | assert(http->storeEntry()->objectLen() >= headers_sz); | |
47f6e231 | 1060 | if (http->out.offset >= http->storeEntry()->objectLen() - headers_sz) { |
26ac0430 AJ |
1061 | debugs(88,3,HERE << "storeOKTransferDone " << |
1062 | " out.offset=" << http->out.offset << | |
1063 | " objectLen()=" << http->storeEntry()->objectLen() << | |
1064 | " headers_sz=" << headers_sz); | |
62e76326 | 1065 | return 1; |
47f6e231 | 1066 | } |
62e76326 | 1067 | |
e39b9382 | 1068 | return 0; |
1069 | } | |
1070 | ||
1071 | int | |
1072 | clientReplyContext::storeNotOKTransferDone() const | |
1073 | { | |
edce4d98 | 1074 | /* |
1075 | * Now, handle STORE_PENDING objects | |
1076 | */ | |
86a2f789 | 1077 | MemObject *mem = http->storeEntry()->mem_obj; |
edce4d98 | 1078 | assert(mem != NULL); |
1079 | assert(http->request != NULL); | |
0e3be1ea | 1080 | /* mem->reply was wrong because it uses the UPSTREAM header length!!! */ |
8bcf08e0 | 1081 | HttpReply const *curReply = mem->getReply(); |
62e76326 | 1082 | |
e39b9382 | 1083 | if (headers_sz == 0) |
62e76326 | 1084 | /* haven't found end of headers yet */ |
1085 | return 0; | |
e39b9382 | 1086 | |
edce4d98 | 1087 | /* |
1088 | * Figure out how much data we are supposed to send. | |
1089 | * If we are sending a body and we don't have a content-length, | |
1090 | * then we must wait for the object to become STORE_OK. | |
1091 | */ | |
8bcf08e0 | 1092 | if (curReply->content_length < 0) |
62e76326 | 1093 | return 0; |
e39b9382 | 1094 | |
8bcf08e0 | 1095 | int64_t expectedLength = curReply->content_length + http->out.headers_sz; |
62e76326 | 1096 | |
e39b9382 | 1097 | if (http->out.size < expectedLength) |
62e76326 | 1098 | return 0; |
47f6e231 | 1099 | else { |
26ac0430 AJ |
1100 | debugs(88,3,HERE << "storeNotOKTransferDone " << |
1101 | " out.size=" << http->out.size << | |
1102 | " expectedLength=" << expectedLength); | |
62e76326 | 1103 | return 1; |
47f6e231 | 1104 | } |
edce4d98 | 1105 | } |
1106 | ||
edce4d98 | 1107 | /* A write has completed, what is the next status based on the |
1108 | * canonical request data? | |
1109 | * 1 something is wrong | |
1110 | * 0 nothing is wrong. | |
1111 | * | |
1112 | */ | |
1113 | int | |
59a1efb2 | 1114 | clientHttpRequestStatus(int fd, ClientHttpRequest const *http) |
edce4d98 | 1115 | { |
062f7f4e FC |
1116 | #if SIZEOF_INT64_T == 4 |
1117 | if (http->out.size > 0x7FFF0000) { | |
e0236918 FC |
1118 | debugs(88, DBG_IMPORTANT, "WARNING: closing FD " << fd << " to prevent out.size counter overflow"); |
1119 | debugs(88, DBG_IMPORTANT, "\tclient " << http->getConn()->peer); | |
1120 | debugs(88, DBG_IMPORTANT, "\treceived " << http->out.size << " bytes"); | |
1121 | debugs(88, DBG_IMPORTANT, "\tURI " << http->log_uri); | |
062f7f4e FC |
1122 | return 1; |
1123 | } | |
1124 | ||
1125 | if (http->out.offset > 0x7FFF0000) { | |
e0236918 FC |
1126 | debugs(88, DBG_IMPORTANT, "WARNING: closing FD " << fd < " to prevent out.offset counter overflow"); |
1127 | debugs(88, DBG_IMPORTANT, "\tclient " << http->getConn()->peer); | |
1128 | debugs(88, DBG_IMPORTANT, "\treceived " << http->out.size << " bytes, offset " << http->out.offset); | |
1129 | debugs(88, DBG_IMPORTANT, "\tURI " << http->log_uri); | |
062f7f4e FC |
1130 | return 1; |
1131 | } | |
1132 | ||
1133 | #endif | |
edce4d98 | 1134 | return 0; |
1135 | } | |
1136 | ||
62e76326 | 1137 | /* Preconditions: |
edce4d98 | 1138 | * *http is a valid structure. |
1139 | * fd is either -1, or an open fd. | |
1140 | * | |
1141 | * TODO: enumify this | |
1142 | * | |
1143 | * This function is used by any http request sink, to determine the status | |
1144 | * of the object. | |
1145 | */ | |
1146 | clientStream_status_t | |
59a1efb2 | 1147 | clientReplyStatus(clientStreamNode * aNode, ClientHttpRequest * http) |
edce4d98 | 1148 | { |
0655fa4d | 1149 | clientReplyContext *context = dynamic_cast<clientReplyContext *>(aNode->data.getRaw()); |
1150 | assert (context); | |
1151 | assert (context->http == http); | |
1152 | return context->replyStatus(); | |
1153 | } | |
1154 | ||
1155 | clientStream_status_t | |
1156 | clientReplyContext::replyStatus() | |
1157 | { | |
edce4d98 | 1158 | int done; |
1159 | /* Here because lower nodes don't need it */ | |
62e76326 | 1160 | |
3daaed1a | 1161 | if (http->storeEntry() == NULL) { |
1162 | debugs(88, 5, "clientReplyStatus: no storeEntry"); | |
62e76326 | 1163 | return STREAM_FAILED; /* yuck, but what can we do? */ |
3daaed1a | 1164 | } |
62e76326 | 1165 | |
3daaed1a | 1166 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) { |
62e76326 | 1167 | /* TODO: Could upstream read errors (result.flags.error) be |
1168 | * lost, and result in undersize requests being considered | |
1169 | * complete. Should we tcp reset such connections ? | |
1170 | */ | |
3daaed1a | 1171 | debugs(88, 5, "clientReplyStatus: aborted storeEntry"); |
62e76326 | 1172 | return STREAM_FAILED; |
3daaed1a | 1173 | } |
62e76326 | 1174 | |
0655fa4d | 1175 | if ((done = checkTransferDone()) != 0 || flags.complete) { |
bf8fe701 | 1176 | debugs(88, 5, "clientReplyStatus: transfer is DONE"); |
62e76326 | 1177 | /* Ok we're finished, but how? */ |
1178 | ||
4ad60609 AR |
1179 | const int64_t expectedBodySize = |
1180 | http->storeEntry()->getReply()->bodySize(http->request->method); | |
450fe1cb | 1181 | if (!http->request->flags.proxyKeepalive && expectedBodySize < 0) { |
bf8fe701 | 1182 | debugs(88, 5, "clientReplyStatus: closing, content_length < 0"); |
62e76326 | 1183 | return STREAM_FAILED; |
1184 | } | |
1185 | ||
1186 | if (!done) { | |
bf8fe701 | 1187 | debugs(88, 5, "clientReplyStatus: closing, !done, but read 0 bytes"); |
62e76326 | 1188 | return STREAM_FAILED; |
1189 | } | |
1190 | ||
4ad60609 | 1191 | if (expectedBodySize >= 0 && !http->gotEnough()) { |
bf8fe701 | 1192 | debugs(88, 5, "clientReplyStatus: client didn't get all it expected"); |
62e76326 | 1193 | return STREAM_UNPLANNED_COMPLETE; |
1194 | } | |
1195 | ||
450fe1cb | 1196 | if (http->request->flags.proxyKeepalive) { |
bf8fe701 | 1197 | debugs(88, 5, "clientReplyStatus: stream complete and can keepalive"); |
62e76326 | 1198 | return STREAM_COMPLETE; |
1199 | } | |
1200 | ||
bf8fe701 | 1201 | debugs(88, 5, "clientReplyStatus: stream was not expected to complete!"); |
62e76326 | 1202 | return STREAM_UNPLANNED_COMPLETE; |
edce4d98 | 1203 | } |
62e76326 | 1204 | |
16611143 | 1205 | // XXX: Should this be checked earlier? We could return above w/o checking. |
1206 | if (reply->receivedBodyTooLarge(*http->request, http->out.offset - 4096)) { | |
b51aec66 | 1207 | /* 4096 is a margin for the HTTP headers included in out.offset */ |
bf8fe701 | 1208 | debugs(88, 5, "clientReplyStatus: client reply body is too large"); |
62e76326 | 1209 | return STREAM_FAILED; |
0e3be1ea | 1210 | } |
62e76326 | 1211 | |
edce4d98 | 1212 | return STREAM_NONE; |
1213 | } | |
1214 | ||
62e76326 | 1215 | /* Responses with no body will not have a content-type header, |
edce4d98 | 1216 | * which breaks the rep_mime_type acl, which |
1217 | * coincidentally, is the most common acl for reply access lists. | |
1218 | * A better long term fix for this is to allow acl matchs on the various | |
26ac0430 AJ |
1219 | * status codes, and then supply a default ruleset that puts these |
1220 | * codes before any user defines access entries. That way the user | |
edce4d98 | 1221 | * can choose to block these responses where appropriate, but won't get |
1222 | * mysterious breakages. | |
1223 | */ | |
0655fa4d | 1224 | bool |
955394ce | 1225 | clientReplyContext::alwaysAllowResponse(Http::StatusCode sline) const |
edce4d98 | 1226 | { |
4ef4b952 | 1227 | bool result; |
1228 | ||
edce4d98 | 1229 | switch (sline) { |
62e76326 | 1230 | |
955394ce | 1231 | case Http::scContinue: |
62e76326 | 1232 | |
955394ce | 1233 | case Http::scSwitchingProtocols: |
62e76326 | 1234 | |
955394ce | 1235 | case Http::scProcessing: |
62e76326 | 1236 | |
955394ce | 1237 | case Http::scNoContent: |
62e76326 | 1238 | |
955394ce | 1239 | case Http::scNotModified: |
4ef4b952 | 1240 | result = true; |
62e76326 | 1241 | break; |
1242 | ||
edce4d98 | 1243 | default: |
4ef4b952 | 1244 | result = false; |
edce4d98 | 1245 | } |
4ef4b952 | 1246 | |
1247 | return result; | |
edce4d98 | 1248 | } |
1249 | ||
a5c8d64d AJ |
1250 | /** |
1251 | * Generate the reply headers sent to client. | |
1252 | * | |
1253 | * Filters out unwanted entries and hop-by-hop from original reply header | |
1254 | * then adds extra entries if we have more info than origin server | |
1255 | * then adds Squid specific entries | |
edce4d98 | 1256 | */ |
0655fa4d | 1257 | void |
1258 | clientReplyContext::buildReplyHeader() | |
edce4d98 | 1259 | { |
7dc5f514 | 1260 | HttpHeader *hdr = &reply->header; |
c8be6d7b | 1261 | int is_hit = logTypeIsATcpHit(http->logType); |
190154cf | 1262 | HttpRequest *request = http->request; |
edce4d98 | 1263 | #if DONT_FILTER_THESE |
1264 | /* but you might want to if you run Squid as an HTTP accelerator */ | |
a9925b40 | 1265 | /* hdr->delById(HDR_ACCEPT_RANGES); */ |
1266 | hdr->delById(HDR_ETAG); | |
edce4d98 | 1267 | #endif |
62e76326 | 1268 | |
edce4d98 | 1269 | if (is_hit) |
a9925b40 | 1270 | hdr->delById(HDR_SET_COOKIE); |
f89d4012 | 1271 | // TODO: RFC 2965 : Must honour Cache-Control: no-cache="set-cookie2" and remove header. |
62e76326 | 1272 | |
23c6d7e7 | 1273 | // if there is not configured a peer proxy with login=PASS or login=PASSTHRU option enabled |
dcf3665b | 1274 | // remove the Proxy-Authenticate header |
23c6d7e7 | 1275 | if ( !request->peer_login || (strcmp(request->peer_login,"PASS") != 0 && strcmp(request->peer_login,"PASSTHRU") != 0)) |
26ac0430 | 1276 | reply->header.delById(HDR_PROXY_AUTHENTICATE); |
dcf3665b | 1277 | |
2cdeea82 | 1278 | reply->header.removeHopByHopEntries(); |
62e76326 | 1279 | |
1280 | // if (request->range) | |
7dc5f514 | 1281 | // clientBuildRangeHeader(http, reply); |
a5c8d64d | 1282 | |
edce4d98 | 1283 | /* |
1284 | * Add a estimated Age header on cache hits. | |
1285 | */ | |
1286 | if (is_hit) { | |
62e76326 | 1287 | /* |
1288 | * Remove any existing Age header sent by upstream caches | |
1289 | * (note that the existing header is passed along unmodified | |
1290 | * on cache misses) | |
1291 | */ | |
a9925b40 | 1292 | hdr->delById(HDR_AGE); |
62e76326 | 1293 | /* |
1294 | * This adds the calculated object age. Note that the details of the | |
1295 | * age calculation is performed by adjusting the timestamp in | |
3900307b | 1296 | * StoreEntry::timestampsSet(), not here. |
62e76326 | 1297 | */ |
bbe58ab5 | 1298 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_SPECIAL)) { |
a9925b40 | 1299 | hdr->delById(HDR_DATE); |
1300 | hdr->insertTime(HDR_DATE, squid_curtime); | |
90fa5816 AJ |
1301 | } else if (http->getConn() && http->getConn()->port->actAsOrigin) { |
1302 | // Swap the Date: header to current time if we are simulating an origin | |
fd49b08b A |
1303 | HttpHeaderEntry *h = hdr->findEntry(HDR_DATE); |
1304 | if (h) | |
1305 | hdr->putExt("X-Origin-Date", h->value.termedBuf()); | |
90fa5816 AJ |
1306 | hdr->delById(HDR_DATE); |
1307 | hdr->insertTime(HDR_DATE, squid_curtime); | |
fd49b08b A |
1308 | h = hdr->findEntry(HDR_EXPIRES); |
1309 | if (h && http->storeEntry()->expires >= 0) { | |
1310 | hdr->putExt("X-Origin-Expires", h->value.termedBuf()); | |
1311 | hdr->delById(HDR_EXPIRES); | |
1312 | hdr->insertTime(HDR_EXPIRES, squid_curtime + http->storeEntry()->expires - http->storeEntry()->timestamp); | |
1313 | } | |
90fa5816 AJ |
1314 | if (http->storeEntry()->timestamp <= squid_curtime) { |
1315 | // put X-Cache-Age: instead of Age: | |
fd49b08b A |
1316 | char age[64]; |
1317 | snprintf(age, sizeof(age), "%ld", (long int) squid_curtime - http->storeEntry()->timestamp); | |
1318 | hdr->putExt("X-Cache-Age", age); | |
1319 | } | |
a81e7089 | 1320 | } else if (http->storeEntry()->timestamp <= squid_curtime) { |
a9925b40 | 1321 | hdr->putInt(HDR_AGE, |
1322 | squid_curtime - http->storeEntry()->timestamp); | |
62e76326 | 1323 | /* Signal old objects. NB: rfc 2616 is not clear, |
1324 | * by implication, on whether we should do this to all | |
1325 | * responses, or only cache hits. | |
1326 | * 14.46 states it ONLY applys for heuristically caclulated | |
1327 | * freshness values, 13.2.4 doesn't specify the same limitation. | |
1328 | * We interpret RFC 2616 under the combination. | |
1329 | */ | |
1330 | /* TODO: if maxage or s-maxage is present, don't do this */ | |
1331 | ||
86a2f789 | 1332 | if (squid_curtime - http->storeEntry()->timestamp >= 86400) { |
8bcf08e0 FC |
1333 | char tbuf[512]; |
1334 | snprintf (tbuf, sizeof(tbuf), "%s %s %s", | |
62e76326 | 1335 | "113", ThisCache, |
1336 | "This cache hit is still fresh and more than 1 day old"); | |
8bcf08e0 | 1337 | hdr->putStr(HDR_WARNING, tbuf); |
62e76326 | 1338 | } |
1339 | } | |
a5c8d64d | 1340 | } |
528b2c61 | 1341 | |
a5c8d64d AJ |
1342 | /* RFC 2616: Section 14.18 |
1343 | * | |
1344 | * Add a Date: header if missing. | |
1345 | * We have access to a clock therefore are required to amend any shortcoming in servers. | |
1346 | * | |
1347 | * NP: done after Age: to prevent ENTRY_SPECIAL double-handling this header. | |
1348 | */ | |
1349 | if ( !hdr->has(HDR_DATE) ) { | |
f0dedeb5 | 1350 | if (!http->storeEntry()) |
a5c8d64d | 1351 | hdr->insertTime(HDR_DATE, squid_curtime); |
f0dedeb5 AJ |
1352 | else if (http->storeEntry()->timestamp > 0) |
1353 | hdr->insertTime(HDR_DATE, http->storeEntry()->timestamp); | |
1354 | else { | |
d9d98242 | 1355 | debugs(88,DBG_IMPORTANT,"BUG 3279: HTTP reply without Date:"); |
e78ae89a AJ |
1356 | /* dump something useful about the problem */ |
1357 | http->storeEntry()->dump(DBG_IMPORTANT); | |
f0dedeb5 | 1358 | } |
edce4d98 | 1359 | } |
62e76326 | 1360 | |
bcfba8bd | 1361 | // add Warnings required by RFC 2616 if serving a stale hit |
450fe1cb | 1362 | if (http->request->flags.staleIfHit && logTypeIsATcpHit(http->logType)) { |
bcfba8bd | 1363 | hdr->putWarning(110, "Response is stale"); |
450fe1cb | 1364 | if (http->request->flags.needValidation) |
bcfba8bd AR |
1365 | hdr->putWarning(111, "Revalidation failed"); |
1366 | } | |
1367 | ||
0bd9aa82 | 1368 | /* Filter unproxyable authentication types */ |
ddd31ed3 | 1369 | if (http->logType != LOG_TCP_DENIED && |
d67acb4e | 1370 | hdr->has(HDR_WWW_AUTHENTICATE)) { |
62e76326 | 1371 | HttpHeaderPos pos = HttpHeaderInitPos; |
1372 | HttpHeaderEntry *e; | |
1373 | ||
26ac0430 | 1374 | int connection_auth_blocked = 0; |
a9925b40 | 1375 | while ((e = hdr->getEntry(&pos))) { |
d67acb4e | 1376 | if (e->id == HDR_WWW_AUTHENTICATE) { |
5b4117d8 | 1377 | const char *value = e->value.rawBuf(); |
62e76326 | 1378 | |
1379 | if ((strncasecmp(value, "NTLM", 4) == 0 && | |
1380 | (value[4] == '\0' || value[4] == ' ')) | |
1381 | || | |
1382 | (strncasecmp(value, "Negotiate", 9) == 0 && | |
d67acb4e | 1383 | (value[9] == '\0' || value[9] == ' ')) |
26ac0430 AJ |
1384 | || |
1385 | (strncasecmp(value, "Kerberos", 8) == 0 && | |
1386 | (value[8] == '\0' || value[8] == ' '))) { | |
450fe1cb | 1387 | if (request->flags.connectionAuthDisabled) { |
26ac0430 | 1388 | hdr->delAt(pos, connection_auth_blocked); |
d67acb4e AJ |
1389 | continue; |
1390 | } | |
e857372a | 1391 | request->flags.mustKeepalive = true; |
45e5102d | 1392 | if (!request->flags.accelerated && !request->flags.intercepted) { |
d67acb4e | 1393 | httpHeaderPutStrf(hdr, HDR_PROXY_SUPPORT, "Session-Based-Authentication"); |
26ac0430 AJ |
1394 | /* |
1395 | We send "[Proxy-]Connection: Proxy-Support" header to mark | |
1396 | Proxy-Support as a hop-by-hop header for intermediaries that do not | |
1397 | understand the semantics of this header. The RFC should have included | |
1398 | this recommendation. | |
1399 | */ | |
d67acb4e AJ |
1400 | httpHeaderPutStrf(hdr, HDR_CONNECTION, "Proxy-support"); |
1401 | } | |
1402 | break; | |
26ac0430 | 1403 | } |
62e76326 | 1404 | } |
1405 | } | |
d67acb4e AJ |
1406 | |
1407 | if (connection_auth_blocked) | |
ba9fb01d | 1408 | hdr->refreshMask(); |
0bd9aa82 | 1409 | } |
62e76326 | 1410 | |
2f1431ea | 1411 | #if USE_AUTH |
edce4d98 | 1412 | /* Handle authentication headers */ |
26ac0430 | 1413 | if (http->logType == LOG_TCP_DENIED && |
9b769c67 AJ |
1414 | ( reply->sline.status() == Http::scProxyAuthenticationRequired || |
1415 | reply->sline.status() == Http::scUnauthorized) | |
26ac0430 AJ |
1416 | ) { |
1417 | /* Add authentication header */ | |
1418 | /*! \todo alter errorstate to be accel on|off aware. The 0 on the next line | |
1419 | * depends on authenticate behaviour: all schemes to date send no extra | |
1420 | * data on 407/401 responses, and do not check the accel state on 401/407 | |
1421 | * responses | |
1422 | */ | |
1423 | authenticateFixHeader(reply, request->auth_user_request, request, 0, 1); | |
a33a428a AJ |
1424 | } else if (request->auth_user_request != NULL) |
1425 | authenticateFixHeader(reply, request->auth_user_request, request, http->flags.accel, 0); | |
2f1431ea | 1426 | #endif |
62e76326 | 1427 | |
edce4d98 | 1428 | /* Append X-Cache */ |
1429 | httpHeaderPutStrf(hdr, HDR_X_CACHE, "%s from %s", | |
62e76326 | 1430 | is_hit ? "HIT" : "MISS", getMyHostname()); |
1431 | ||
edce4d98 | 1432 | #if USE_CACHE_DIGESTS |
1433 | /* Append X-Cache-Lookup: -- temporary hack, to be removed @?@ @?@ */ | |
1434 | httpHeaderPutStrf(hdr, HDR_X_CACHE_LOOKUP, "%s from %s:%d", | |
0655fa4d | 1435 | lookup_type ? lookup_type : "NONE", |
62e76326 | 1436 | getMyHostname(), getMyPort()); |
1437 | ||
edce4d98 | 1438 | #endif |
62e76326 | 1439 | |
45e5102d | 1440 | const bool maySendChunkedReply = !request->multipartRangeRequest() && |
f7701e72 | 1441 | reply->sline.protocol == AnyP::PROTO_HTTP && // response is HTTP |
526ed14e | 1442 | (request->http_ver >= Http::ProtocolVersion(1, 1)); |
4ad60609 | 1443 | |
f529bb20 | 1444 | /* Check whether we should send keep-alive */ |
9b769c67 | 1445 | if (!Config.onoff.error_pconns && reply->sline.status() >= 400 && !request->flags.mustKeepalive) { |
bf8fe701 | 1446 | debugs(33, 3, "clientBuildReplyHeader: Error, don't keep-alive"); |
e857372a | 1447 | request->flags.proxyKeepalive = false; |
450fe1cb | 1448 | } else if (!Config.onoff.client_pconns && !request->flags.mustKeepalive) { |
17b57873 | 1449 | debugs(33, 2, "clientBuildReplyHeader: Connection Keep-Alive not requested by admin or client"); |
e857372a | 1450 | request->flags.proxyKeepalive = false; |
450fe1cb | 1451 | } else if (request->flags.proxyKeepalive && shutting_down) { |
f529bb20 | 1452 | debugs(88, 3, "clientBuildReplyHeader: Shutting down, don't keep-alive."); |
e857372a | 1453 | request->flags.proxyKeepalive = false; |
450fe1cb | 1454 | } else if (request->flags.connectionAuth && !reply->keep_alive) { |
26ac0430 | 1455 | debugs(33, 2, "clientBuildReplyHeader: Connection oriented auth but server side non-persistent"); |
e857372a | 1456 | request->flags.proxyKeepalive = false; |
4ad60609 | 1457 | } else if (reply->bodySize(request->method) < 0 && !maySendChunkedReply) { |
17b57873 | 1458 | debugs(88, 3, "clientBuildReplyHeader: can't keep-alive, unknown body size" ); |
e857372a | 1459 | request->flags.proxyKeepalive = false; |
450fe1cb | 1460 | } else if (fdUsageHigh()&& !request->flags.mustKeepalive) { |
17b57873 | 1461 | debugs(88, 3, "clientBuildReplyHeader: Not many unused FDs, can't keep-alive"); |
e857372a | 1462 | request->flags.proxyKeepalive = false; |
450fe1cb | 1463 | } else if (request->flags.sslBumped && !reply->persistent()) { |
49f1c7f7 AR |
1464 | // We do not really have to close, but we pretend we are a tunnel. |
1465 | debugs(88, 3, "clientBuildReplyHeader: bumped reply forces close"); | |
e857372a | 1466 | request->flags.proxyKeepalive = false; |
693cb033 CT |
1467 | } else if (request->pinnedConnection() && !reply->persistent()) { |
1468 | // The peer wants to close the pinned connection | |
1469 | debugs(88, 3, "pinned reply forces close"); | |
e857372a | 1470 | request->flags.proxyKeepalive = false; |
17b57873 | 1471 | } |
d67acb4e | 1472 | |
4ad60609 AR |
1473 | // Decide if we send chunked reply |
1474 | if (maySendChunkedReply && | |
450fe1cb | 1475 | request->flags.proxyKeepalive && |
4cb2536f | 1476 | reply->bodySize(request->method) < 0) { |
4ad60609 | 1477 | debugs(88, 3, "clientBuildReplyHeader: chunked reply"); |
e857372a | 1478 | request->flags.chunkedReply = true; |
4ad60609 AR |
1479 | hdr->putStr(HDR_TRANSFER_ENCODING, "chunked"); |
1480 | } | |
f529bb20 | 1481 | |
4dea3fdd | 1482 | /* Append VIA */ |
92caea77 | 1483 | if (Config.onoff.via) { |
62e76326 | 1484 | LOCAL_ARRAY(char, bbuf, MAX_URL + 32); |
30abd221 | 1485 | String strVia; |
26ac0430 | 1486 | hdr->getList(HDR_VIA, &strVia); |
88331887 | 1487 | snprintf(bbuf, MAX_URL + 32, "%d.%d %s", |
7dc5f514 | 1488 | reply->sline.version.major, |
1489 | reply->sline.version.minor, | |
62e76326 | 1490 | ThisCache); |
1491 | strListAdd(&strVia, bbuf, ','); | |
a9925b40 | 1492 | hdr->delById(HDR_VIA); |
5b4117d8 | 1493 | hdr->putStr(HDR_VIA, strVia.termedBuf()); |
c8be6d7b | 1494 | } |
95e78500 | 1495 | /* Signal keep-alive or close explicitly */ |
450fe1cb | 1496 | hdr->putStr(HDR_CONNECTION, request->flags.proxyKeepalive ? "keep-alive" : "close"); |
62e76326 | 1497 | |
edce4d98 | 1498 | #if ADD_X_REQUEST_URI |
1499 | /* | |
1500 | * Knowing the URI of the request is useful when debugging persistent | |
1501 | * connections in a client; we cannot guarantee the order of http headers, | |
1502 | * but X-Request-URI is likely to be the very last header to ease use from a | |
1503 | * debugger [hdr->entries.count-1]. | |
1504 | */ | |
a9925b40 | 1505 | hdr->putStr(HDR_X_REQUEST_URI, |
1506 | http->memOjbect()->url ? http->memObject()->url : http->uri); | |
62e76326 | 1507 | |
edce4d98 | 1508 | #endif |
62e76326 | 1509 | |
45cca89d AJ |
1510 | /* Surrogate-Control requires Surrogate-Capability from upstream to pass on */ |
1511 | if ( hdr->has(HDR_SURROGATE_CONTROL) ) { | |
1512 | if (!request->header.has(HDR_SURROGATE_CAPABILITY)) { | |
1513 | hdr->delById(HDR_SURROGATE_CONTROL); | |
1514 | } | |
1515 | /* TODO: else case: drop any controls intended specifically for our surrogate ID */ | |
1516 | } | |
1517 | ||
8c01ada0 | 1518 | httpHdrMangleList(hdr, request, ROR_REPLY); |
edce4d98 | 1519 | } |
1520 | ||
0655fa4d | 1521 | void |
b297bcd0 | 1522 | clientReplyContext::cloneReply() |
edce4d98 | 1523 | { |
7dc5f514 | 1524 | assert(reply == NULL); |
0655fa4d | 1525 | |
b248c2a3 AJ |
1526 | reply = http->storeEntry()->getReply()->clone(); |
1527 | HTTPMSGLOCK(reply); | |
7dc5f514 | 1528 | |
0c3d3f65 | 1529 | if (reply->sline.protocol == AnyP::PROTO_HTTP) { |
871c031f | 1530 | /* RFC 2616 requires us to advertise our 1.1 version (but only on real HTTP traffic) */ |
526ed14e | 1531 | reply->sline.version = Http::ProtocolVersion(1,1); |
e77d7ef0 | 1532 | } |
0655fa4d | 1533 | |
1534 | /* do header conversions */ | |
1535 | buildReplyHeader(); | |
edce4d98 | 1536 | } |
1537 | ||
e6ccf245 | 1538 | void |
1539 | clientReplyContext::identifyStoreObject() | |
edce4d98 | 1540 | { |
190154cf | 1541 | HttpRequest *r = http->request; |
62e76326 | 1542 | |
45e5102d | 1543 | if (r->flags.cachable || r->flags.internal) { |
62e76326 | 1544 | lookingforstore = 5; |
1545 | StoreEntry::getPublicByRequest (this, r); | |
559da936 | 1546 | } else { |
62e76326 | 1547 | identifyFoundObject (NullStoreEntry::getInstance()); |
559da936 | 1548 | } |
e6ccf245 | 1549 | } |
1550 | ||
7d5f62a4 AJ |
1551 | /** |
1552 | * Check state of the current StoreEntry object. | |
1553 | * to see if we can determine the final status of the request. | |
1554 | */ | |
e6ccf245 | 1555 | void |
1556 | clientReplyContext::identifyFoundObject(StoreEntry *newEntry) | |
1557 | { | |
1558 | StoreEntry *e = newEntry; | |
190154cf | 1559 | HttpRequest *r = http->request; |
62e76326 | 1560 | |
d85b8894 | 1561 | /** \li If the entry received isNull() then we ignore it. */ |
e6ccf245 | 1562 | if (e->isNull()) { |
86a2f789 | 1563 | http->storeEntry(NULL); |
e6ccf245 | 1564 | } else { |
86a2f789 | 1565 | http->storeEntry(e); |
e6ccf245 | 1566 | } |
62e76326 | 1567 | |
86a2f789 | 1568 | e = http->storeEntry(); |
a12a049a | 1569 | |
7d5f62a4 | 1570 | /* Release IP-cache entries on reload */ |
d85b8894 | 1571 | /** \li If the request has no-cache flag set or some no_cache HACK in operation we |
7d5f62a4 AJ |
1572 | * 'invalidate' the cached IP entries for this request ??? |
1573 | */ | |
17852883 | 1574 | if (r->flags.noCache || r->flags.noCacheHack()) |
cc192b50 | 1575 | ipcacheInvalidateNegative(r->GetHost()); |
45e5102d | 1576 | |
edce4d98 | 1577 | #if USE_CACHE_DIGESTS |
86a2f789 | 1578 | lookup_type = http->storeEntry() ? "HIT" : "MISS"; |
edce4d98 | 1579 | #endif |
62e76326 | 1580 | |
86a2f789 | 1581 | if (NULL == http->storeEntry()) { |
d85b8894 | 1582 | /** \li If no StoreEntry object is current assume this object isn't in the cache set MISS*/ |
7d5f62a4 | 1583 | debugs(85, 3, "clientProcessRequest2: StoreEntry is NULL - MISS"); |
62e76326 | 1584 | http->logType = LOG_TCP_MISS; |
1585 | doGetMoreData(); | |
1586 | return; | |
edce4d98 | 1587 | } |
62e76326 | 1588 | |
edce4d98 | 1589 | if (Config.onoff.offline) { |
d85b8894 | 1590 | /** \li If we are running in offline mode set to HIT */ |
bf8fe701 | 1591 | debugs(85, 3, "clientProcessRequest2: offline HIT"); |
62e76326 | 1592 | http->logType = LOG_TCP_HIT; |
1593 | doGetMoreData(); | |
1594 | return; | |
edce4d98 | 1595 | } |
62e76326 | 1596 | |
edce4d98 | 1597 | if (http->redirect.status) { |
d85b8894 | 1598 | /** \li If redirection status is True force this to be a MISS */ |
16cd3193 | 1599 | debugs(85, 3, HERE << "REDIRECT status forced StoreEntry to NULL (no body on 3XX responses)"); |
86a2f789 | 1600 | http->storeEntry(NULL); |
16cd3193 | 1601 | http->logType = LOG_TCP_REDIRECT; |
62e76326 | 1602 | doGetMoreData(); |
1603 | return; | |
edce4d98 | 1604 | } |
62e76326 | 1605 | |
3900307b | 1606 | if (!e->validToSend()) { |
bf8fe701 | 1607 | debugs(85, 3, "clientProcessRequest2: !storeEntryValidToSend MISS" ); |
86a2f789 | 1608 | http->storeEntry(NULL); |
62e76326 | 1609 | http->logType = LOG_TCP_MISS; |
1610 | doGetMoreData(); | |
1611 | return; | |
edce4d98 | 1612 | } |
62e76326 | 1613 | |
edce4d98 | 1614 | if (EBIT_TEST(e->flags, ENTRY_SPECIAL)) { |
d85b8894 | 1615 | /* \li Special entries are always hits, no matter what the client says */ |
bf8fe701 | 1616 | debugs(85, 3, "clientProcessRequest2: ENTRY_SPECIAL HIT"); |
62e76326 | 1617 | http->logType = LOG_TCP_HIT; |
1618 | doGetMoreData(); | |
1619 | return; | |
edce4d98 | 1620 | } |
62e76326 | 1621 | |
450fe1cb | 1622 | if (r->flags.noCache) { |
bf8fe701 | 1623 | debugs(85, 3, "clientProcessRequest2: no-cache REFRESH MISS"); |
86a2f789 | 1624 | http->storeEntry(NULL); |
62e76326 | 1625 | http->logType = LOG_TCP_CLIENT_REFRESH_MISS; |
1626 | doGetMoreData(); | |
1627 | return; | |
edce4d98 | 1628 | } |
62e76326 | 1629 | |
bf8fe701 | 1630 | debugs(85, 3, "clientProcessRequest2: default HIT"); |
e6ccf245 | 1631 | http->logType = LOG_TCP_HIT; |
1632 | doGetMoreData(); | |
edce4d98 | 1633 | } |
1634 | ||
d85b8894 AJ |
1635 | /** |
1636 | * Request more data from the store for the client Stream | |
edce4d98 | 1637 | * This is *the* entry point to this module. |
1638 | * | |
1639 | * Preconditions: | |
d85b8894 AJ |
1640 | * - This is the head of the list. |
1641 | * - There is at least one more node. | |
1642 | * - Data context is not null | |
edce4d98 | 1643 | */ |
1644 | void | |
59a1efb2 | 1645 | clientGetMoreData(clientStreamNode * aNode, ClientHttpRequest * http) |
edce4d98 | 1646 | { |
edce4d98 | 1647 | /* Test preconditions */ |
e6ccf245 | 1648 | assert(aNode != NULL); |
1649 | assert(cbdataReferenceValid(aNode)); | |
e6ccf245 | 1650 | assert(aNode->node.prev == NULL); |
1651 | assert(aNode->node.next != NULL); | |
0655fa4d | 1652 | clientReplyContext *context = dynamic_cast<clientReplyContext *>(aNode->data.getRaw()); |
1653 | assert (context); | |
edce4d98 | 1654 | assert(context->http == http); |
1655 | ||
0655fa4d | 1656 | clientStreamNode *next = ( clientStreamNode *)aNode->node.next->data; |
62e76326 | 1657 | |
edce4d98 | 1658 | if (!context->ourNode) |
62e76326 | 1659 | context->ourNode = aNode; |
1660 | ||
e6ccf245 | 1661 | /* no cbdatareference, this is only used once, and safely */ |
edce4d98 | 1662 | if (context->flags.storelogiccomplete) { |
62e76326 | 1663 | StoreIOBuffer tempBuffer; |
1664 | tempBuffer.offset = next->readBuffer.offset + context->headers_sz; | |
1665 | tempBuffer.length = next->readBuffer.length; | |
1666 | tempBuffer.data = next->readBuffer.data; | |
1667 | ||
86a2f789 | 1668 | storeClientCopy(context->sc, http->storeEntry(), |
0655fa4d | 1669 | tempBuffer, clientReplyContext::SendMoreData, context); |
62e76326 | 1670 | return; |
edce4d98 | 1671 | } |
62e76326 | 1672 | |
c2a7cefd | 1673 | if (context->http->request->method == Http::METHOD_PURGE) { |
62e76326 | 1674 | context->purgeRequest(); |
1675 | return; | |
edce4d98 | 1676 | } |
62e76326 | 1677 | |
e18b8316 | 1678 | // OPTIONS with Max-Forwards:0 handled in clientProcessRequest() |
fc90edc3 | 1679 | |
c2a7cefd | 1680 | if (context->http->request->method == Http::METHOD_TRACE) { |
34ee6e73 | 1681 | if (context->http->request->header.getInt64(HDR_MAX_FORWARDS) == 0) { |
0655fa4d | 1682 | context->traceReply(aNode); |
62e76326 | 1683 | return; |
1684 | } | |
1685 | ||
1686 | /* continue forwarding, not finished yet. */ | |
1687 | http->logType = LOG_TCP_MISS; | |
1688 | ||
1689 | context->doGetMoreData(); | |
edce4d98 | 1690 | } else |
62e76326 | 1691 | context->identifyStoreObject(); |
e6ccf245 | 1692 | } |
1693 | ||
1694 | void | |
1695 | clientReplyContext::doGetMoreData() | |
1696 | { | |
edce4d98 | 1697 | /* We still have to do store logic processing - vary, cache hit etc */ |
86a2f789 | 1698 | if (http->storeEntry() != NULL) { |
62e76326 | 1699 | /* someone found the object in the cache for us */ |
8bcf08e0 | 1700 | StoreIOBuffer localTempBuffer; |
34266cde | 1701 | |
3d0ac046 | 1702 | http->storeEntry()->lock(); |
62e76326 | 1703 | |
86a2f789 | 1704 | if (http->storeEntry()->mem_obj == NULL) { |
62e76326 | 1705 | /* |
1706 | * This if-block exists because we don't want to clobber | |
1707 | * a preexiting mem_obj->method value if the mem_obj | |
1708 | * already exists. For example, when a HEAD request | |
1709 | * is a cache hit for a GET response, we want to keep | |
1710 | * the method as GET. | |
1711 | */ | |
a8a0b1c2 | 1712 | http->storeEntry()->createMemObject(storeId(), http->log_uri); |
7d5f62a4 | 1713 | http->storeEntry()->mem_obj->method = http->request->method; |
a8a0b1c2 EC |
1714 | /** |
1715 | * Here we can see if the object was | |
1716 | * created using URL or alternative StoreID from helper. | |
1717 | */ | |
1718 | debugs(88, 3, "mem_obj->url: " << http->storeEntry()->mem_obj->url); | |
62e76326 | 1719 | } |
1720 | ||
86a2f789 | 1721 | sc = storeClientListAdd(http->storeEntry(), this); |
9a0a18de | 1722 | #if USE_DELAY_POOLS |
62e76326 | 1723 | sc->setDelayId(DelayId::DelayClient(http)); |
edce4d98 | 1724 | #endif |
62e76326 | 1725 | |
1726 | assert(http->logType == LOG_TCP_HIT); | |
1727 | reqofs = 0; | |
1728 | /* guarantee nothing has been sent yet! */ | |
1729 | assert(http->out.size == 0); | |
1730 | assert(http->out.offset == 0); | |
425de4c8 AJ |
1731 | |
1732 | if (Ip::Qos::TheConfig.isHitTosActive()) { | |
73c36fd9 | 1733 | Ip::Qos::doTosLocalHit(http->getConn()->clientConnection); |
425de4c8 AJ |
1734 | } |
1735 | ||
1736 | if (Ip::Qos::TheConfig.isHitNfmarkActive()) { | |
73c36fd9 | 1737 | Ip::Qos::doNfmarkLocalHit(http->getConn()->clientConnection); |
b86ab75b | 1738 | } |
425de4c8 | 1739 | |
8bcf08e0 FC |
1740 | localTempBuffer.offset = reqofs; |
1741 | localTempBuffer.length = getNextNode()->readBuffer.length; | |
1742 | localTempBuffer.data = getNextNode()->readBuffer.data; | |
1743 | storeClientCopy(sc, http->storeEntry(), localTempBuffer, CacheHit, this); | |
edce4d98 | 1744 | } else { |
62e76326 | 1745 | /* MISS CASE, http->logType is already set! */ |
0655fa4d | 1746 | processMiss(); |
edce4d98 | 1747 | } |
1748 | } | |
1749 | ||
d85b8894 | 1750 | /** The next node has removed itself from the stream. */ |
edce4d98 | 1751 | void |
59a1efb2 | 1752 | clientReplyDetach(clientStreamNode * node, ClientHttpRequest * http) |
edce4d98 | 1753 | { |
d85b8894 | 1754 | /** detach from the stream */ |
edce4d98 | 1755 | clientStreamDetach(node, http); |
1756 | } | |
1757 | ||
d85b8894 AJ |
1758 | /** |
1759 | * Accepts chunk of a http message in buf, parses prefix, filters headers and | |
edce4d98 | 1760 | * such, writes processed message to the message recipient |
1761 | */ | |
1762 | void | |
0655fa4d | 1763 | clientReplyContext::SendMoreData(void *data, StoreIOBuffer result) |
edce4d98 | 1764 | { |
e6ccf245 | 1765 | clientReplyContext *context = static_cast<clientReplyContext *>(data); |
528b2c61 | 1766 | context->sendMoreData (result); |
1767 | } | |
1768 | ||
1769 | void | |
1770 | clientReplyContext::makeThisHead() | |
1771 | { | |
1772 | /* At least, I think thats what this does */ | |
1773 | dlinkDelete(&http->active, &ClientActiveRequests); | |
1774 | dlinkAdd(http, &http->active, &ClientActiveRequests); | |
1775 | } | |
1776 | ||
1777 | bool | |
1778 | clientReplyContext::errorInStream(StoreIOBuffer const &result, size_t const &sizeToProcess)const | |
1779 | { | |
1780 | return /* aborted request */ | |
86a2f789 | 1781 | (http->storeEntry() && EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) || |
62e76326 | 1782 | /* Upstream read error */ (result.flags.error) || |
1783 | /* Upstream EOF */ (sizeToProcess == 0); | |
528b2c61 | 1784 | } |
1785 | ||
1786 | void | |
1787 | clientReplyContext::sendStreamError(StoreIOBuffer const &result) | |
1788 | { | |
d85b8894 | 1789 | /** call clientWriteComplete so the client socket gets closed |
af6a12ee | 1790 | * |
d85b8894 | 1791 | * We call into the stream, because we don't know that there is a |
528b2c61 | 1792 | * client socket! |
1793 | */ | |
26ac0430 | 1794 | debugs(88, 5, "clientReplyContext::sendStreamError: A stream error has occured, marking as complete and sending no data."); |
8bcf08e0 | 1795 | StoreIOBuffer localTempBuffer; |
528b2c61 | 1796 | flags.complete = 1; |
e857372a | 1797 | http->request->flags.streamError = true; |
8bcf08e0 | 1798 | localTempBuffer.flags.error = result.flags.error; |
528b2c61 | 1799 | clientStreamCallback((clientStreamNode*)http->client_stream.head->data, http, NULL, |
8bcf08e0 | 1800 | localTempBuffer); |
528b2c61 | 1801 | } |
1802 | ||
1803 | void | |
1804 | clientReplyContext::pushStreamData(StoreIOBuffer const &result, char *source) | |
1805 | { | |
8bcf08e0 | 1806 | StoreIOBuffer localTempBuffer; |
62e76326 | 1807 | |
528b2c61 | 1808 | if (result.length == 0) { |
bf8fe701 | 1809 | debugs(88, 5, "clientReplyContext::pushStreamData: marking request as complete due to 0 length store result"); |
62e76326 | 1810 | flags.complete = 1; |
528b2c61 | 1811 | } |
62e76326 | 1812 | |
43ae1d95 | 1813 | assert(result.offset - headers_sz == next()->readBuffer.offset); |
8bcf08e0 FC |
1814 | localTempBuffer.offset = result.offset - headers_sz; |
1815 | localTempBuffer.length = result.length; | |
62e76326 | 1816 | |
8bcf08e0 FC |
1817 | if (localTempBuffer.length) |
1818 | localTempBuffer.data = source; | |
62e76326 | 1819 | |
528b2c61 | 1820 | clientStreamCallback((clientStreamNode*)http->client_stream.head->data, http, NULL, |
8bcf08e0 | 1821 | localTempBuffer); |
528b2c61 | 1822 | } |
1823 | ||
1824 | clientStreamNode * | |
1825 | clientReplyContext::next() const | |
1826 | { | |
1827 | assert ( (clientStreamNode*)http->client_stream.head->next->data == getNextNode()); | |
1828 | return getNextNode(); | |
1829 | } | |
1830 | ||
b51aec66 | 1831 | void |
16611143 | 1832 | clientReplyContext::sendBodyTooLargeError() |
b51aec66 | 1833 | { |
b7ac5457 | 1834 | Ip::Address tmp_noaddr; |
4dd643d5 | 1835 | tmp_noaddr.setNoAddr(); // TODO: make a global const |
af0d9bca | 1836 | http->logType = LOG_TCP_DENIED_REPLY; |
955394ce | 1837 | ErrorState *err = clientBuildError(ERR_TOO_BIG, Http::scForbidden, NULL, |
73c36fd9 | 1838 | http->getConn() != NULL ? http->getConn()->clientConnection->remote : tmp_noaddr, |
26ac0430 | 1839 | http->request); |
16611143 | 1840 | removeClientStoreReference(&(sc), http); |
1841 | HTTPMSGUNLOCK(reply); | |
1842 | startError(err); | |
26ac0430 | 1843 | |
b51aec66 | 1844 | } |
1845 | ||
79c8035e AR |
1846 | /// send 412 (Precondition Failed) to client |
1847 | void | |
1848 | clientReplyContext::sendPreconditionFailedError() | |
1849 | { | |
1850 | http->logType = LOG_TCP_HIT; | |
1851 | ErrorState *const err = | |
955394ce | 1852 | clientBuildError(ERR_PRECONDITION_FAILED, Http::scPreconditionFailed, |
73c36fd9 | 1853 | NULL, http->getConn()->clientConnection->remote, http->request); |
79c8035e AR |
1854 | removeClientStoreReference(&sc, http); |
1855 | HTTPMSGUNLOCK(reply); | |
1856 | startError(err); | |
1857 | } | |
1858 | ||
a2bd457d AJ |
1859 | /// send 304 (Not Modified) to client |
1860 | void | |
1861 | clientReplyContext::sendNotModified() | |
1862 | { | |
1863 | StoreEntry *e = http->storeEntry(); | |
1864 | const time_t timestamp = e->timestamp; | |
1865 | HttpReply *const temprep = e->getReply()->make304(); | |
1866 | http->logType = LOG_TCP_IMS_HIT; | |
1867 | removeClientStoreReference(&sc, http); | |
f206b652 | 1868 | createStoreEntry(http->request->method, RequestFlags()); |
a2bd457d AJ |
1869 | e = http->storeEntry(); |
1870 | // Copy timestamp from the original entry so the 304 | |
1871 | // reply has a meaningful Age: header. | |
90fa5816 | 1872 | e->timestampsSet(); |
a2bd457d AJ |
1873 | e->timestamp = timestamp; |
1874 | e->replaceHttpReply(temprep); | |
1875 | e->complete(); | |
1876 | /* | |
1877 | * TODO: why put this in the store and then serialise it and | |
1878 | * then parse it again. Simply mark the request complete in | |
1879 | * our context and write the reply struct to the client side. | |
1880 | */ | |
1881 | triggerInitialStoreRead(); | |
1882 | } | |
1883 | ||
1884 | /// send 304 (Not Modified) or 412 (Precondition Failed) to client | |
1885 | /// depending on request method | |
1886 | void | |
1887 | clientReplyContext::sendNotModifiedOrPreconditionFailedError() | |
1888 | { | |
c2a7cefd AJ |
1889 | if (http->request->method == Http::METHOD_GET || |
1890 | http->request->method == Http::METHOD_HEAD) | |
a2bd457d AJ |
1891 | sendNotModified(); |
1892 | else | |
1893 | sendPreconditionFailedError(); | |
1894 | } | |
1895 | ||
4993f571 | 1896 | void |
1897 | clientReplyContext::processReplyAccess () | |
1898 | { | |
b50e327b | 1899 | /* NP: this should probably soft-fail to a zero-sized-reply error ?? */ |
7dc5f514 | 1900 | assert(reply); |
b50e327b AJ |
1901 | |
1902 | /** Don't block our own responses or HTTP status messages */ | |
16611143 | 1903 | if (http->logType == LOG_TCP_DENIED || |
26ac0430 | 1904 | http->logType == LOG_TCP_DENIED_REPLY || |
9b769c67 | 1905 | alwaysAllowResponse(reply->sline.status())) { |
acbf9428 | 1906 | headers_sz = reply->hdr_sz; |
2efeb0b7 | 1907 | processReplyAccessResult(ACCESS_ALLOWED); |
26ac0430 | 1908 | return; |
230a8cc6 | 1909 | } |
26ac0430 | 1910 | |
b50e327b | 1911 | /** Check for reply to big error */ |
16611143 | 1912 | if (reply->expectedBodyTooLarge(*http->request)) { |
1913 | sendBodyTooLargeError(); | |
62e76326 | 1914 | return; |
1915 | } | |
1916 | ||
7dc5f514 | 1917 | headers_sz = reply->hdr_sz; |
230a8cc6 | 1918 | |
b50e327b | 1919 | /** check for absent access controls (permit by default) */ |
230a8cc6 | 1920 | if (!Config.accessList.reply) { |
2efeb0b7 | 1921 | processReplyAccessResult(ACCESS_ALLOWED); |
26ac0430 | 1922 | return; |
230a8cc6 | 1923 | } |
1924 | ||
b50e327b | 1925 | /** Process http_reply_access lists */ |
127dce76 AR |
1926 | ACLFilledChecklist *replyChecklist = |
1927 | clientAclChecklistCreate(Config.accessList.reply, http); | |
b248c2a3 AJ |
1928 | replyChecklist->reply = reply; |
1929 | HTTPMSGLOCK(replyChecklist->reply); | |
0655fa4d | 1930 | replyChecklist->nonBlockingCheck(ProcessReplyAccessResult, this); |
4993f571 | 1931 | } |
1932 | ||
1933 | void | |
2efeb0b7 | 1934 | clientReplyContext::ProcessReplyAccessResult(allow_t rv, void *voidMe) |
4993f571 | 1935 | { |
1936 | clientReplyContext *me = static_cast<clientReplyContext *>(voidMe); | |
0655fa4d | 1937 | me->processReplyAccessResult(rv); |
4993f571 | 1938 | } |
1939 | ||
1940 | void | |
2efeb0b7 | 1941 | clientReplyContext::processReplyAccessResult(const allow_t &accessAllowed) |
4993f571 | 1942 | { |
26ac0430 | 1943 | debugs(88, 2, "The reply for " << RequestMethodStr(http->request->method) |
2efeb0b7 | 1944 | << " " << http->uri << " is " << accessAllowed << ", because it matched '" |
bf8fe701 | 1945 | << (AclMatchedName ? AclMatchedName : "NO ACL's") << "'" ); |
62e76326 | 1946 | |
2efeb0b7 | 1947 | if (accessAllowed != ACCESS_ALLOWED) { |
62e76326 | 1948 | ErrorState *err; |
0185bd6f | 1949 | err_type page_id; |
9ce7856a | 1950 | page_id = aclGetDenyInfoPage(&Config.denyInfoList, AclMatchedName, 1); |
0185bd6f | 1951 | |
c466369c | 1952 | http->logType = LOG_TCP_DENIED_REPLY; |
1953 | ||
0185bd6f | 1954 | if (page_id == ERR_NONE) |
1955 | page_id = ERR_ACCESS_DENIED; | |
1956 | ||
b7ac5457 | 1957 | Ip::Address tmp_noaddr; |
4dd643d5 | 1958 | tmp_noaddr.setNoAddr(); |
955394ce | 1959 | err = clientBuildError(page_id, Http::scForbidden, NULL, |
73c36fd9 | 1960 | http->getConn() != NULL ? http->getConn()->clientConnection->remote : tmp_noaddr, |
26ac0430 | 1961 | http->request); |
0185bd6f | 1962 | |
86a2f789 | 1963 | removeClientStoreReference(&sc, http); |
0185bd6f | 1964 | |
7dc5f514 | 1965 | HTTPMSGUNLOCK(reply); |
0185bd6f | 1966 | |
3c2c1d31 | 1967 | startError(err); |
1968 | ||
62e76326 | 1969 | return; |
1970 | } | |
1971 | ||
0976f8db | 1972 | /* Ok, the reply is allowed, */ |
1973 | http->loggingEntry(http->storeEntry()); | |
1974 | ||
7dc5f514 | 1975 | ssize_t body_size = reqofs - reply->hdr_sz; |
b297bcd0 | 1976 | if (body_size < 0) { |
26ac0430 AJ |
1977 | reqofs = reply->hdr_sz; |
1978 | body_size = 0; | |
b297bcd0 | 1979 | } |
0976f8db | 1980 | |
bf8fe701 | 1981 | debugs(88, 3, "clientReplyContext::sendMoreData: Appending " << |
1982 | (int) body_size << " bytes after " << reply->hdr_sz << | |
1983 | " bytes of headers"); | |
0976f8db | 1984 | |
f41735ea | 1985 | #if USE_SQUID_ESI |
62e76326 | 1986 | |
9b769c67 AJ |
1987 | if (http->flags.accel && reply->sline.status() != Http::scForbidden && |
1988 | !alwaysAllowResponse(reply->sline.status()) && | |
7dc5f514 | 1989 | esiEnableProcessing(reply)) { |
bf8fe701 | 1990 | debugs(88, 2, "Enabling ESI processing for " << http->uri); |
43ae1d95 | 1991 | clientStreamInsertHead(&http->client_stream, esiStreamRead, |
1992 | esiProcessStream, esiStreamDetach, esiStreamStatus, NULL); | |
1993 | } | |
1994 | ||
5ef38a13 | 1995 | #endif |
1996 | ||
c2a7cefd | 1997 | if (http->request->method == Http::METHOD_HEAD) { |
62e76326 | 1998 | /* do not forward body for HEAD replies */ |
1999 | body_size = 0; | |
be4d35dc | 2000 | http->flags.done_copying = true; |
62e76326 | 2001 | flags.complete = 1; |
2002 | } | |
2003 | ||
2004 | assert (!flags.headersSent); | |
2005 | flags.headersSent = true; | |
2006 | ||
8bcf08e0 | 2007 | StoreIOBuffer localTempBuffer; |
62e76326 | 2008 | char *buf = next()->readBuffer.data; |
e85eb4e1 | 2009 | char *body_buf = buf + reply->hdr_sz; |
62e76326 | 2010 | |
49ea0125 | 2011 | //Server side may disable ranges under some circumstances. |
2012 | ||
2013 | if ((!http->request->range)) | |
2014 | next()->readBuffer.offset = 0; | |
2015 | ||
e85eb4e1 AJ |
2016 | body_buf -= next()->readBuffer.offset; |
2017 | ||
62e76326 | 2018 | if (next()->readBuffer.offset != 0) { |
2019 | if (next()->readBuffer.offset > body_size) { | |
2324cda2 | 2020 | /* Can't use any of the body we received. send nothing */ |
8bcf08e0 FC |
2021 | localTempBuffer.length = 0; |
2022 | localTempBuffer.data = NULL; | |
62e76326 | 2023 | } else { |
8bcf08e0 FC |
2024 | localTempBuffer.length = body_size - next()->readBuffer.offset; |
2025 | localTempBuffer.data = body_buf + next()->readBuffer.offset; | |
62e76326 | 2026 | } |
2027 | } else { | |
8bcf08e0 FC |
2028 | localTempBuffer.length = body_size; |
2029 | localTempBuffer.data = body_buf; | |
62e76326 | 2030 | } |
2031 | ||
0655fa4d | 2032 | /* TODO??: move the data in the buffer back by the request header size */ |
62e76326 | 2033 | clientStreamCallback((clientStreamNode *)http->client_stream.head->data, |
8bcf08e0 | 2034 | http, reply, localTempBuffer); |
62e76326 | 2035 | |
2036 | return; | |
4993f571 | 2037 | } |
2038 | ||
528b2c61 | 2039 | void |
2040 | clientReplyContext::sendMoreData (StoreIOBuffer result) | |
2041 | { | |
50c09fc4 | 2042 | if (deleting) |
2043 | return; | |
2044 | ||
86a2f789 | 2045 | StoreEntry *entry = http->storeEntry(); |
50c09fc4 | 2046 | |
1cf238db | 2047 | ConnStateData * conn = http->getConn(); |
50c09fc4 | 2048 | |
ea25a575 TH |
2049 | // too late, our conn is closing |
2050 | // TODO: should we also quit? | |
2051 | if (conn == NULL) { | |
2052 | debugs(33,3, "not sending more data to a closed connection" ); | |
2053 | return; | |
2054 | } | |
2055 | if (!conn->isOpen()) { | |
2056 | debugs(33,3, "not sending more data to closing connection " << conn->clientConnection); | |
9af2f95b AR |
2057 | return; |
2058 | } | |
693cb033 CT |
2059 | if (conn->pinning.zeroReply) { |
2060 | debugs(33,3, "not sending more data after a pinned zero reply " << conn->clientConnection); | |
2061 | return; | |
2062 | } | |
50c09fc4 | 2063 | |
528b2c61 | 2064 | char *buf = next()->readBuffer.data; |
50c09fc4 | 2065 | |
da33c835 | 2066 | if (buf != result.data) { |
62e76326 | 2067 | /* we've got to copy some data */ |
2068 | assert(result.length <= next()->readBuffer.length); | |
41d00cd3 | 2069 | memcpy(buf, result.data, result.length); |
edce4d98 | 2070 | } |
62e76326 | 2071 | |
73c36fd9 | 2072 | if (reqofs==0 && !logTypeIsATcpHit(http->logType) && Comm::IsConnOpen(conn->clientConnection)) { |
425de4c8 | 2073 | if (Ip::Qos::TheConfig.isHitTosActive()) { |
73c36fd9 | 2074 | Ip::Qos::doTosLocalMiss(conn->clientConnection, http->request->hier.code); |
425de4c8 AJ |
2075 | } |
2076 | if (Ip::Qos::TheConfig.isHitNfmarkActive()) { | |
73c36fd9 | 2077 | Ip::Qos::doNfmarkLocalMiss(conn->clientConnection, http->request->hier.code); |
452bb8e2 | 2078 | } |
7172612f | 2079 | } |
7172612f | 2080 | |
ab9c533b HN |
2081 | /* We've got the final data to start pushing... */ |
2082 | flags.storelogiccomplete = 1; | |
2083 | ||
4993f571 | 2084 | reqofs += result.length; |
2085 | ||
2086 | assert(reqofs <= HTTP_REQBUF_SZ || flags.headersSent); | |
62e76326 | 2087 | |
edce4d98 | 2088 | assert(http->request != NULL); |
62e76326 | 2089 | |
edce4d98 | 2090 | /* ESI TODO: remove this assert once everything is stable */ |
2091 | assert(http->client_stream.head->data | |
62e76326 | 2092 | && cbdataReferenceValid(http->client_stream.head->data)); |
528b2c61 | 2093 | |
2094 | makeThisHead(); | |
62e76326 | 2095 | |
bf8fe701 | 2096 | debugs(88, 5, "clientReplyContext::sendMoreData: " << http->uri << ", " << |
47f6e231 | 2097 | reqofs << " bytes (" << result.length << |
bf8fe701 | 2098 | " new bytes)"); |
47f6e231 | 2099 | debugs(88, 5, "clientReplyContext::sendMoreData:" |
73c36fd9 | 2100 | << conn->clientConnection << |
26ac0430 AJ |
2101 | " '" << entry->url() << "'" << |
2102 | " out.offset=" << http->out.offset); | |
528b2c61 | 2103 | |
edce4d98 | 2104 | /* update size of the request */ |
4993f571 | 2105 | reqsize = reqofs; |
62e76326 | 2106 | |
4993f571 | 2107 | if (errorInStream(result, reqofs)) { |
62e76326 | 2108 | sendStreamError(result); |
2109 | return; | |
edce4d98 | 2110 | } |
528b2c61 | 2111 | |
2112 | if (flags.headersSent) { | |
62e76326 | 2113 | pushStreamData (result, buf); |
2114 | return; | |
edce4d98 | 2115 | } |
62e76326 | 2116 | |
b297bcd0 | 2117 | cloneReply(); |
21b92762 | 2118 | |
b297bcd0 | 2119 | /* handle headers */ |
21b92762 | 2120 | |
b297bcd0 | 2121 | if (Config.onoff.log_mime_hdrs) { |
26ac0430 | 2122 | size_t k; |
43ae1d95 | 2123 | |
26ac0430 | 2124 | if ((k = headersEnd(buf, reqofs))) { |
41ebd397 CT |
2125 | safe_free(http->al->headers.reply); |
2126 | http->al->headers.reply = (char *)xcalloc(k + 1, 1); | |
2127 | xstrncpy(http->al->headers.reply, buf, k); | |
26ac0430 | 2128 | } |
edce4d98 | 2129 | } |
b297bcd0 HN |
2130 | |
2131 | holdingBuffer = result; | |
2132 | processReplyAccess(); | |
2133 | return; | |
edce4d98 | 2134 | } |
2135 | ||
edce4d98 | 2136 | /* Using this breaks the client layering just a little! |
2137 | */ | |
0655fa4d | 2138 | void |
f206b652 | 2139 | clientReplyContext::createStoreEntry(const HttpRequestMethod& m, RequestFlags reqFlags) |
edce4d98 | 2140 | { |
0655fa4d | 2141 | assert(http != NULL); |
edce4d98 | 2142 | /* |
2143 | * For erroneous requests, we might not have a h->request, | |
2144 | * so make a fake one. | |
2145 | */ | |
62e76326 | 2146 | |
b248c2a3 AJ |
2147 | if (http->request == NULL) { |
2148 | http->request = new HttpRequest(m, AnyP::PROTO_NONE, null_string); | |
2149 | HTTPMSGLOCK(http->request); | |
2150 | } | |
62e76326 | 2151 | |
a8a0b1c2 | 2152 | StoreEntry *e = storeCreateEntry(storeId(), http->log_uri, reqFlags, m); |
62e76326 | 2153 | |
0655fa4d | 2154 | sc = storeClientListAdd(e, this); |
62e76326 | 2155 | |
9a0a18de | 2156 | #if USE_DELAY_POOLS |
0655fa4d | 2157 | sc->setDelayId(DelayId::DelayClient(http)); |
edce4d98 | 2158 | #endif |
62e76326 | 2159 | |
0655fa4d | 2160 | reqofs = 0; |
62e76326 | 2161 | |
0655fa4d | 2162 | reqsize = 0; |
62e76326 | 2163 | |
edce4d98 | 2164 | /* I don't think this is actually needed! -- adrian */ |
0655fa4d | 2165 | /* http->reqbuf = http->norm_reqbuf; */ |
2166 | // assert(http->reqbuf == http->norm_reqbuf); | |
edce4d98 | 2167 | /* The next line is illegal because we don't know if the client stream |
26ac0430 | 2168 | * buffers have been set up |
edce4d98 | 2169 | */ |
0655fa4d | 2170 | // storeClientCopy(http->sc, e, 0, HTTP_REQBUF_SZ, http->reqbuf, |
2171 | // SendMoreData, this); | |
edce4d98 | 2172 | /* So, we mark the store logic as complete */ |
8bcf08e0 | 2173 | flags.storelogiccomplete = 1; |
62e76326 | 2174 | |
edce4d98 | 2175 | /* and get the caller to request a read, from whereever they are */ |
62e76326 | 2176 | /* NOTE: after ANY data flows down the pipe, even one step, |
26ac0430 | 2177 | * this function CAN NOT be used to manage errors |
edce4d98 | 2178 | */ |
86a2f789 | 2179 | http->storeEntry(e); |
edce4d98 | 2180 | } |
2181 | ||
2182 | ErrorState * | |
955394ce | 2183 | clientBuildError(err_type page_id, Http::StatusCode status, char const *url, |
b7ac5457 | 2184 | Ip::Address &src_addr, HttpRequest * request) |
edce4d98 | 2185 | { |
913524f0 | 2186 | ErrorState *err = new ErrorState(page_id, status, request); |
cc192b50 | 2187 | err->src_addr = src_addr; |
62e76326 | 2188 | |
edce4d98 | 2189 | if (url) |
62e76326 | 2190 | err->url = xstrdup(url); |
2191 | ||
edce4d98 | 2192 | return err; |
2193 | } |