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edce4d98 | 1 | /* |
bde978a6 | 2 | * Copyright (C) 1996-2015 The Squid Software Foundation and contributors |
edce4d98 | 3 | * |
bbc27441 AJ |
4 | * Squid software is distributed under GPLv2+ license and includes |
5 | * contributions from numerous individuals and organizations. | |
6 | * Please see the COPYING and CONTRIBUTORS files for details. | |
edce4d98 | 7 | */ |
bbc27441 AJ |
8 | |
9 | /* DEBUG: section 88 Client-side Reply Routines */ | |
10 | ||
f7f3304a | 11 | #include "squid.h" |
b7ac5457 AJ |
12 | #include "acl/FilledChecklist.h" |
13 | #include "acl/Gadgets.h" | |
65d448bc | 14 | #include "anyp/PortCfg.h" |
0655fa4d | 15 | #include "client_side_reply.h" |
b7ac5457 | 16 | #include "errorpage.h" |
46017fdd | 17 | #include "ETag.h" |
c4ad1349 | 18 | #include "fd.h" |
7172612f | 19 | #include "fde.h" |
31971e6a | 20 | #include "format/Token.h" |
eb13c21e | 21 | #include "FwdState.h" |
582c2af2 FC |
22 | #include "globals.h" |
23 | #include "globals.h" | |
a5bac1d2 | 24 | #include "HttpHeaderTools.h" |
b7ac5457 AJ |
25 | #include "HttpReply.h" |
26 | #include "HttpRequest.h" | |
27 | #include "ip/QosConfig.h" | |
714e68b7 | 28 | #include "ipcache.h" |
1c7ae5ff | 29 | #include "log/access_log.h" |
b7ac5457 | 30 | #include "MemObject.h" |
b6149797 | 31 | #include "mime_header.h" |
f0ba2534 | 32 | #include "neighbors.h" |
c6f15d40 | 33 | #include "refresh.h" |
f206b652 | 34 | #include "RequestFlags.h" |
4d5904f7 | 35 | #include "SquidConfig.h" |
985c86bc | 36 | #include "SquidTime.h" |
b7ac5457 | 37 | #include "Store.h" |
28204b3b | 38 | #include "StrList.h" |
4e540555 | 39 | #include "tools.h" |
b1bd952a | 40 | #include "URL.h" |
582c2af2 FC |
41 | #if USE_AUTH |
42 | #include "auth/UserRequest.h" | |
43 | #endif | |
44 | #if USE_DELAY_POOLS | |
45 | #include "DelayPools.h" | |
46 | #endif | |
47 | #if USE_SQUID_ESI | |
48 | #include "esi/Esi.h" | |
49 | #endif | |
e6ccf245 | 50 | |
3e4f6092 FC |
51 | #include <memory> |
52 | ||
0655fa4d | 53 | CBDATA_CLASS_INIT(clientReplyContext); |
edce4d98 | 54 | |
edce4d98 | 55 | /* Local functions */ |
e6ccf245 | 56 | extern "C" CSS clientReplyStatus; |
955394ce | 57 | ErrorState *clientBuildError(err_type, Http::StatusCode, char const *, Ip::Address &, HttpRequest *); |
edce4d98 | 58 | |
edce4d98 | 59 | /* privates */ |
edce4d98 | 60 | |
0655fa4d | 61 | clientReplyContext::~clientReplyContext() |
edce4d98 | 62 | { |
50c09fc4 | 63 | deleting = true; |
64 | /* This may trigger a callback back into SendMoreData as the cbdata | |
65 | * is still valid | |
66 | */ | |
86a2f789 | 67 | removeClientStoreReference(&sc, http); |
edce4d98 | 68 | /* old_entry might still be set if we didn't yet get the reply |
0655fa4d | 69 | * code in HandleIMSReply() */ |
70 | removeStoreReference(&old_sc, &old_entry); | |
71 | safe_free(tempBuffer.data); | |
72 | cbdataReferenceDone(http); | |
2b7d324b | 73 | HTTPMSGUNLOCK(reply); |
edce4d98 | 74 | } |
75 | ||
cc8c4af2 AJ |
76 | clientReplyContext::clientReplyContext(ClientHttpRequest *clientContext) : |
77 | purgeStatus(Http::scNone), | |
78 | lookingforstore(0), | |
79 | http(cbdataReference(clientContext)), | |
67969886 | 80 | headers_sz(0), |
cc8c4af2 AJ |
81 | sc(NULL), |
82 | old_reqsize(0), | |
83 | reqsize(0), | |
84 | reqofs(0), | |
85 | #if USE_CACHE_DIGESTS | |
86 | lookup_type(NULL), | |
87 | #endif | |
88 | ourNode(NULL), | |
89 | reply(NULL), | |
90 | old_entry(NULL), | |
91 | old_sc(NULL), | |
92 | deleting(false) | |
93 | { | |
94 | *tempbuf = 0; | |
95 | } | |
edce4d98 | 96 | |
a5c8d64d AJ |
97 | /** Create an error in the store awaiting the client side to read it. |
98 | * | |
99 | * This may be better placed in the clientStream logic, but it has not been | |
0655fa4d | 100 | * relocated there yet |
101 | */ | |
edce4d98 | 102 | void |
0655fa4d | 103 | clientReplyContext::setReplyToError( |
955394ce | 104 | err_type err, Http::StatusCode status, const HttpRequestMethod& method, char const *uri, |
b7ac5457 | 105 | Ip::Address &addr, HttpRequest * failedrequest, const char *unparsedrequest, |
2f1431ea | 106 | #if USE_AUTH |
c7baff40 | 107 | Auth::UserRequest::Pointer auth_user_request |
2f1431ea | 108 | #else |
9d2b8284 | 109 | void* |
2f1431ea | 110 | #endif |
74174c03 | 111 | ) |
edce4d98 | 112 | { |
a33a428a | 113 | ErrorState *errstate = clientBuildError(err, status, uri, addr, failedrequest); |
62e76326 | 114 | |
edce4d98 | 115 | if (unparsedrequest) |
62e76326 | 116 | errstate->request_hdrs = xstrdup(unparsedrequest); |
edce4d98 | 117 | |
8eb0a7ee CT |
118 | #if USE_AUTH |
119 | errstate->auth_user_request = auth_user_request; | |
120 | #endif | |
121 | setReplyToError(method, errstate); | |
122 | } | |
123 | ||
124 | void clientReplyContext::setReplyToError(const HttpRequestMethod& method, ErrorState *errstate) | |
125 | { | |
955394ce | 126 | if (errstate->httpStatus == Http::scNotImplemented && http->request) |
62e76326 | 127 | /* prevent confusion over whether we default to persistent or not */ |
e857372a | 128 | http->request->flags.proxyKeepalive = false; |
62e76326 | 129 | |
41ebd397 | 130 | http->al->http.code = errstate->httpStatus; |
edce4d98 | 131 | |
f0baf149 AR |
132 | if (http->request) |
133 | http->request->ignoreRange("responding with a Squid-generated error"); | |
134 | ||
f206b652 | 135 | createStoreEntry(method, RequestFlags()); |
edce4d98 | 136 | assert(errstate->callback_data == NULL); |
86a2f789 | 137 | errorAppendEntry(http->storeEntry(), errstate); |
edce4d98 | 138 | /* Now the caller reads to get this */ |
139 | } | |
140 | ||
eacfca83 AR |
141 | void |
142 | clientReplyContext::setReplyToReply(HttpReply *futureReply) | |
143 | { | |
144 | Must(futureReply); | |
145 | http->al->http.code = futureReply->sline.status(); | |
146 | ||
147 | HttpRequestMethod method; | |
148 | if (http->request) { // nil on responses to unparsable requests | |
149 | http->request->ignoreRange("responding with a Squid-generated reply"); | |
150 | method = http->request->method; | |
151 | } | |
152 | ||
153 | createStoreEntry(method, RequestFlags()); | |
154 | ||
155 | http->storeEntry()->storeErrorResponse(futureReply); | |
156 | /* Now the caller reads to get futureReply */ | |
157 | } | |
158 | ||
f0baf149 AR |
159 | // Assumes that the entry contains an error response without Content-Range. |
160 | // To use with regular entries, make HTTP Range header removal conditional. | |
161 | void clientReplyContext::setReplyToStoreEntry(StoreEntry *entry, const char *reason) | |
061bbdec | 162 | { |
1bfe9ade | 163 | entry->lock("clientReplyContext::setReplyToStoreEntry"); // removeClientStoreReference() unlocks |
061bbdec CT |
164 | sc = storeClientListAdd(entry, this); |
165 | #if USE_DELAY_POOLS | |
166 | sc->setDelayId(DelayId::DelayClient(http)); | |
167 | #endif | |
168 | reqofs = 0; | |
169 | reqsize = 0; | |
f0baf149 AR |
170 | if (http->request) |
171 | http->request->ignoreRange(reason); | |
061bbdec CT |
172 | flags.storelogiccomplete = 1; |
173 | http->storeEntry(entry); | |
174 | } | |
175 | ||
edce4d98 | 176 | void |
0655fa4d | 177 | clientReplyContext::removeStoreReference(store_client ** scp, |
178 | StoreEntry ** ep) | |
edce4d98 | 179 | { |
180 | StoreEntry *e; | |
e4ae841b | 181 | store_client *sc_tmp = *scp; |
62e76326 | 182 | |
edce4d98 | 183 | if ((e = *ep) != NULL) { |
62e76326 | 184 | *ep = NULL; |
e4ae841b | 185 | storeUnregister(sc_tmp, e, this); |
62e76326 | 186 | *scp = NULL; |
1bfe9ade | 187 | e->unlock("clientReplyContext::removeStoreReference"); |
edce4d98 | 188 | } |
189 | } | |
190 | ||
86a2f789 | 191 | void |
8bcf08e0 | 192 | clientReplyContext::removeClientStoreReference(store_client **scp, ClientHttpRequest *aHttpRequest) |
86a2f789 | 193 | { |
8bcf08e0 | 194 | StoreEntry *reference = aHttpRequest->storeEntry(); |
86a2f789 | 195 | removeStoreReference(scp, &reference); |
8bcf08e0 | 196 | aHttpRequest->storeEntry(reference); |
86a2f789 | 197 | } |
198 | ||
edce4d98 | 199 | void |
0655fa4d | 200 | clientReplyContext::saveState() |
edce4d98 | 201 | { |
e6ccf245 | 202 | assert(old_sc == NULL); |
bf8fe701 | 203 | debugs(88, 3, "clientReplyContext::saveState: saving store context"); |
86a2f789 | 204 | old_entry = http->storeEntry(); |
e6ccf245 | 205 | old_sc = sc; |
206 | old_reqsize = reqsize; | |
207 | tempBuffer.offset = reqofs; | |
edce4d98 | 208 | /* Prevent accessing the now saved entries */ |
86a2f789 | 209 | http->storeEntry(NULL); |
e6ccf245 | 210 | sc = NULL; |
211 | reqsize = 0; | |
212 | reqofs = 0; | |
edce4d98 | 213 | } |
214 | ||
215 | void | |
0655fa4d | 216 | clientReplyContext::restoreState() |
edce4d98 | 217 | { |
e6ccf245 | 218 | assert(old_sc != NULL); |
bf8fe701 | 219 | debugs(88, 3, "clientReplyContext::restoreState: Restoring store context"); |
86a2f789 | 220 | removeClientStoreReference(&sc, http); |
221 | http->storeEntry(old_entry); | |
e6ccf245 | 222 | sc = old_sc; |
223 | reqsize = old_reqsize; | |
224 | reqofs = tempBuffer.offset; | |
edce4d98 | 225 | /* Prevent accessed the old saved entries */ |
0655fa4d | 226 | old_entry = NULL; |
e6ccf245 | 227 | old_sc = NULL; |
228 | old_reqsize = 0; | |
229 | tempBuffer.offset = 0; | |
c8be6d7b | 230 | } |
231 | ||
232 | void | |
0655fa4d | 233 | clientReplyContext::startError(ErrorState * err) |
c8be6d7b | 234 | { |
f206b652 | 235 | createStoreEntry(http->request->method, RequestFlags()); |
0655fa4d | 236 | triggerInitialStoreRead(); |
86a2f789 | 237 | errorAppendEntry(http->storeEntry(), err); |
edce4d98 | 238 | } |
239 | ||
e6ccf245 | 240 | clientStreamNode * |
528b2c61 | 241 | clientReplyContext::getNextNode() const |
e6ccf245 | 242 | { |
62e76326 | 243 | return (clientStreamNode *)ourNode->node.next->data; |
e6ccf245 | 244 | } |
245 | ||
62e76326 | 246 | /* This function is wrong - the client parameters don't include the |
528b2c61 | 247 | * header offset |
248 | */ | |
c8be6d7b | 249 | void |
0655fa4d | 250 | clientReplyContext::triggerInitialStoreRead() |
c8be6d7b | 251 | { |
0655fa4d | 252 | /* when confident, 0 becomes reqofs, and then this factors into |
26ac0430 | 253 | * startSendProcess |
528b2c61 | 254 | */ |
0655fa4d | 255 | assert(reqofs == 0); |
8bcf08e0 FC |
256 | StoreIOBuffer localTempBuffer (next()->readBuffer.length, 0, next()->readBuffer.data); |
257 | storeClientCopy(sc, http->storeEntry(), localTempBuffer, SendMoreData, this); | |
c8be6d7b | 258 | } |
edce4d98 | 259 | |
260 | /* there is an expired entry in the store. | |
261 | * setup a temporary buffer area and perform an IMS to the origin | |
262 | */ | |
0655fa4d | 263 | void |
264 | clientReplyContext::processExpired() | |
edce4d98 | 265 | { |
a8a0b1c2 | 266 | const char *url = storeId(); |
edce4d98 | 267 | StoreEntry *entry = NULL; |
bf8fe701 | 268 | debugs(88, 3, "clientReplyContext::processExpired: '" << http->uri << "'"); |
86a2f789 | 269 | assert(http->storeEntry()->lastmod >= 0); |
edce4d98 | 270 | /* |
271 | * check if we are allowed to contact other servers | |
26ac0430 | 272 | * @?@: Instead of a 504 (Gateway Timeout) reply, we may want to return |
edce4d98 | 273 | * a stale entry *if* it matches client requirements |
274 | */ | |
62e76326 | 275 | |
0655fa4d | 276 | if (http->onlyIfCached()) { |
277 | processOnlyIfCachedMiss(); | |
62e76326 | 278 | return; |
edce4d98 | 279 | } |
62e76326 | 280 | |
e857372a | 281 | http->request->flags.refresh = true; |
edce4d98 | 282 | #if STORE_CLIENT_LIST_DEBUG |
c8be6d7b | 283 | /* Prevent a race with the store client memory free routines |
edce4d98 | 284 | */ |
0655fa4d | 285 | assert(storeClientIsThisAClient(sc, this)); |
edce4d98 | 286 | #endif |
287 | /* Prepare to make a new temporary request */ | |
0655fa4d | 288 | saveState(); |
edce4d98 | 289 | entry = storeCreateEntry(url, |
62e76326 | 290 | http->log_uri, http->request->flags, http->request->method); |
34266cde | 291 | /* NOTE, don't call StoreEntry->lock(), storeCreateEntry() does it */ |
0655fa4d | 292 | sc = storeClientListAdd(entry, this); |
9a0a18de | 293 | #if USE_DELAY_POOLS |
edce4d98 | 294 | /* delay_id is already set on original store client */ |
0655fa4d | 295 | sc->setDelayId(DelayId::DelayClient(http)); |
edce4d98 | 296 | #endif |
62e76326 | 297 | |
0655fa4d | 298 | http->request->lastmod = old_entry->lastmod; |
46017fdd CT |
299 | |
300 | if (!http->request->header.has(HDR_IF_NONE_MATCH)) { | |
301 | ETag etag = {NULL, -1}; // TODO: make that a default ETag constructor | |
302 | if (old_entry->hasEtag(etag) && !etag.weak) | |
303 | http->request->etag = etag.str; | |
304 | } | |
305 | ||
4a7a3d56 | 306 | debugs(88, 5, "clientReplyContext::processExpired : lastmod " << entry->lastmod ); |
86a2f789 | 307 | http->storeEntry(entry); |
c8be6d7b | 308 | assert(http->out.offset == 0); |
9174ba3d | 309 | assert(http->request->clientConnectionManager == http->getConn()); |
655daa06 | 310 | |
b2d22df6 | 311 | /* |
312 | * A refcounted pointer so that FwdState stays around as long as | |
313 | * this clientReplyContext does | |
314 | */ | |
73c36fd9 | 315 | Comm::ConnectionPointer conn = http->getConn() != NULL ? http->getConn()->clientConnection : NULL; |
4bf68cfa | 316 | FwdState::Start(conn, http->storeEntry(), http->request, http->al); |
62e76326 | 317 | |
edce4d98 | 318 | /* Register with storage manager to receive updates when data comes in. */ |
62e76326 | 319 | |
edce4d98 | 320 | if (EBIT_TEST(entry->flags, ENTRY_ABORTED)) |
fa84c01d | 321 | debugs(88, DBG_CRITICAL, "clientReplyContext::processExpired: Found ENTRY_ABORTED object"); |
62e76326 | 322 | |
c8be6d7b | 323 | { |
62e76326 | 324 | /* start counting the length from 0 */ |
8bcf08e0 FC |
325 | StoreIOBuffer localTempBuffer(HTTP_REQBUF_SZ, 0, tempbuf); |
326 | storeClientCopy(sc, entry, localTempBuffer, HandleIMSReply, this); | |
edce4d98 | 327 | } |
328 | } | |
329 | ||
528b2c61 | 330 | void |
331 | clientReplyContext::sendClientUpstreamResponse() | |
332 | { | |
333 | StoreIOBuffer tempresult; | |
0655fa4d | 334 | removeStoreReference(&old_sc, &old_entry); |
2324cda2 | 335 | /* here the data to send is the data we just received */ |
528b2c61 | 336 | tempBuffer.offset = 0; |
337 | old_reqsize = 0; | |
0655fa4d | 338 | /* sendMoreData tracks the offset as well. |
528b2c61 | 339 | * Force it back to zero */ |
340 | reqofs = 0; | |
86a2f789 | 341 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 342 | /* TODO: provide sendMoreData with the ready parsed reply */ |
528b2c61 | 343 | tempresult.length = reqsize; |
344 | tempresult.data = tempbuf; | |
0655fa4d | 345 | sendMoreData(tempresult); |
528b2c61 | 346 | } |
347 | ||
edce4d98 | 348 | void |
0655fa4d | 349 | clientReplyContext::HandleIMSReply(void *data, StoreIOBuffer result) |
edce4d98 | 350 | { |
e6ccf245 | 351 | clientReplyContext *context = (clientReplyContext *)data; |
0655fa4d | 352 | context->handleIMSReply(result); |
353 | } | |
62e76326 | 354 | |
0655fa4d | 355 | void |
356 | clientReplyContext::sendClientOldEntry() | |
357 | { | |
358 | /* Get the old request back */ | |
359 | restoreState(); | |
360 | /* here the data to send is in the next nodes buffers already */ | |
86a2f789 | 361 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 362 | /* sendMoreData tracks the offset as well. |
363 | * Force it back to zero */ | |
364 | reqofs = 0; | |
365 | StoreIOBuffer tempresult (reqsize, reqofs, next()->readBuffer.data); | |
366 | sendMoreData(tempresult); | |
367 | } | |
62e76326 | 368 | |
1d7ab0f4 | 369 | /* This is the workhorse of the HandleIMSReply callback. |
370 | * | |
371 | * It is called when we've got data back from the origin following our | |
372 | * IMS request to revalidate a stale entry. | |
373 | */ | |
0655fa4d | 374 | void |
1d7ab0f4 | 375 | clientReplyContext::handleIMSReply(StoreIOBuffer result) |
0655fa4d | 376 | { |
1d7ab0f4 | 377 | if (deleting) |
378 | return; | |
62e76326 | 379 | |
bf8fe701 | 380 | debugs(88, 3, "handleIMSReply: " << http->storeEntry()->url() << ", " << (long unsigned) result.length << " bytes" ); |
62e76326 | 381 | |
1d7ab0f4 | 382 | if (http->storeEntry() == NULL) |
383 | return; | |
07947ad8 | 384 | |
1d7ab0f4 | 385 | if (result.flags.error && !EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) |
386 | return; | |
62e76326 | 387 | |
1d7ab0f4 | 388 | /* update size of the request */ |
389 | reqsize = result.length + reqofs; | |
62e76326 | 390 | |
9b769c67 | 391 | const Http::StatusCode status = http->storeEntry()->getReply()->sline.status(); |
62e76326 | 392 | |
1d7ab0f4 | 393 | // request to origin was aborted |
394 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) { | |
bf8fe701 | 395 | debugs(88, 3, "handleIMSReply: request to origin aborted '" << http->storeEntry()->url() << "', sending old entry to client" ); |
7948b784 | 396 | http->logType = LOG_TCP_REFRESH_FAIL_OLD; |
1d7ab0f4 | 397 | sendClientOldEntry(); |
0655fa4d | 398 | } |
62e76326 | 399 | |
b297bcd0 | 400 | HttpReply *old_rep = (HttpReply *) old_entry->getReply(); |
62e76326 | 401 | |
b297bcd0 | 402 | // origin replied 304 |
955394ce | 403 | if (status == Http::scNotModified) { |
26ac0430 | 404 | http->logType = LOG_TCP_REFRESH_UNMODIFIED; |
e857372a | 405 | http->request->flags.staleIfHit = false; // old_entry is no longer stale |
045a76ab | 406 | |
26ac0430 | 407 | // update headers on existing entry |
4802f60d | 408 | old_rep->updateOnNotModified(http->storeEntry()->getReply()); |
26ac0430 | 409 | old_entry->timestampsSet(); |
62e76326 | 410 | |
26ac0430 | 411 | // if client sent IMS |
62e76326 | 412 | |
45e5102d | 413 | if (http->request->flags.ims && !old_entry->modifiedSince(http->request)) { |
26ac0430 AJ |
414 | // forward the 304 from origin |
415 | debugs(88, 3, "handleIMSReply: origin replied 304, revalidating existing entry and forwarding 304 to client"); | |
416 | sendClientUpstreamResponse(); | |
417 | } else { | |
418 | // send existing entry, it's still valid | |
419 | debugs(88, 3, "handleIMSReply: origin replied 304, revalidating existing entry and sending " << | |
9b769c67 | 420 | old_rep->sline.status() << " to client"); |
26ac0430 AJ |
421 | sendClientOldEntry(); |
422 | } | |
b297bcd0 | 423 | } |
62e76326 | 424 | |
b297bcd0 | 425 | // origin replied with a non-error code |
955394ce | 426 | else if (status > Http::scNone && status < Http::scInternalServerError) { |
26ac0430 AJ |
427 | // forward response from origin |
428 | http->logType = LOG_TCP_REFRESH_MODIFIED; | |
429 | debugs(88, 3, "handleIMSReply: origin replied " << status << ", replacing existing entry and forwarding to client"); | |
430 | sendClientUpstreamResponse(); | |
b297bcd0 | 431 | } |
62e76326 | 432 | |
b297bcd0 | 433 | // origin replied with an error |
450fe1cb | 434 | else if (http->request->flags.failOnValidationError) { |
7948b784 AR |
435 | http->logType = LOG_TCP_REFRESH_FAIL_ERR; |
436 | debugs(88, 3, "handleIMSReply: origin replied with error " << status << | |
437 | ", forwarding to client due to fail_on_validation_err"); | |
438 | sendClientUpstreamResponse(); | |
439 | } else { | |
26ac0430 | 440 | // ignore and let client have old entry |
7948b784 | 441 | http->logType = LOG_TCP_REFRESH_FAIL_OLD; |
26ac0430 | 442 | debugs(88, 3, "handleIMSReply: origin replied with error " << |
9b769c67 | 443 | status << ", sending old entry (" << old_rep->sline.status() << ") to client"); |
26ac0430 | 444 | sendClientOldEntry(); |
1d7ab0f4 | 445 | } |
edce4d98 | 446 | } |
447 | ||
82afb125 FC |
448 | SQUIDCEXTERN CSR clientGetMoreData; |
449 | SQUIDCEXTERN CSD clientReplyDetach; | |
edce4d98 | 450 | |
7d5f62a4 AJ |
451 | /** |
452 | * clientReplyContext::cacheHit Should only be called until the HTTP reply headers | |
edce4d98 | 453 | * have been parsed. Normally this should be a single call, but |
454 | * it might take more than one. As soon as we have the headers, | |
0655fa4d | 455 | * we hand off to clientSendMoreData, processExpired, or |
456 | * processMiss. | |
edce4d98 | 457 | */ |
458 | void | |
0655fa4d | 459 | clientReplyContext::CacheHit(void *data, StoreIOBuffer result) |
edce4d98 | 460 | { |
e6ccf245 | 461 | clientReplyContext *context = (clientReplyContext *)data; |
7d5f62a4 | 462 | context->cacheHit(result); |
0655fa4d | 463 | } |
464 | ||
7d5f62a4 AJ |
465 | /** |
466 | * Process a possible cache HIT. | |
467 | */ | |
0655fa4d | 468 | void |
469 | clientReplyContext::cacheHit(StoreIOBuffer result) | |
470 | { | |
7d5f62a4 | 471 | /** Ignore if the HIT object is being deleted. */ |
1b7514d9 AJ |
472 | if (deleting) { |
473 | debugs(88, 3, "HIT object being deleted. Ignore the HIT."); | |
045a76ab | 474 | return; |
1b7514d9 | 475 | } |
045a76ab | 476 | |
86a2f789 | 477 | StoreEntry *e = http->storeEntry(); |
045a76ab | 478 | |
190154cf | 479 | HttpRequest *r = http->request; |
045a76ab | 480 | |
4a7a3d56 | 481 | debugs(88, 3, "clientCacheHit: " << http->uri << ", " << result.length << " bytes"); |
62e76326 | 482 | |
86a2f789 | 483 | if (http->storeEntry() == NULL) { |
bf8fe701 | 484 | debugs(88, 3, "clientCacheHit: request aborted"); |
62e76326 | 485 | return; |
c8be6d7b | 486 | } else if (result.flags.error) { |
62e76326 | 487 | /* swap in failure */ |
bf8fe701 | 488 | debugs(88, 3, "clientCacheHit: swapin failure for " << http->uri); |
62e76326 | 489 | http->logType = LOG_TCP_SWAPFAIL_MISS; |
86a2f789 | 490 | removeClientStoreReference(&sc, http); |
0655fa4d | 491 | processMiss(); |
62e76326 | 492 | return; |
edce4d98 | 493 | } |
62e76326 | 494 | |
d3b3ab85 | 495 | if (result.length == 0) { |
1b7514d9 | 496 | debugs(88, 5, "store IO buffer has no content. MISS"); |
62e76326 | 497 | /* the store couldn't get enough data from the file for us to id the |
498 | * object | |
499 | */ | |
500 | /* treat as a miss */ | |
501 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 502 | processMiss(); |
62e76326 | 503 | return; |
d3b3ab85 | 504 | } |
62e76326 | 505 | |
edce4d98 | 506 | assert(!EBIT_TEST(e->flags, ENTRY_ABORTED)); |
507 | /* update size of the request */ | |
0655fa4d | 508 | reqsize = result.length + reqofs; |
62e76326 | 509 | |
edce4d98 | 510 | /* |
511 | * Got the headers, now grok them | |
512 | */ | |
91369933 | 513 | assert(http->logType.oldType == LOG_TCP_HIT); |
62e76326 | 514 | |
851feda6 | 515 | if (http->request->storeId().cmp(e->mem_obj->storeId()) != 0) { |
c877c0bc | 516 | debugs(33, DBG_IMPORTANT, "clientProcessHit: URL mismatch, '" << e->mem_obj->storeId() << "' != '" << http->request->storeId() << "'"); |
b8a899c0 | 517 | http->logType = LOG_TCP_MISS; // we lack a more precise LOG_*_MISS code |
cdd4e1c1 | 518 | processMiss(); |
519 | return; | |
520 | } | |
521 | ||
edce4d98 | 522 | switch (varyEvaluateMatch(e, r)) { |
62e76326 | 523 | |
edce4d98 | 524 | case VARY_NONE: |
62e76326 | 525 | /* No variance detected. Continue as normal */ |
526 | break; | |
527 | ||
edce4d98 | 528 | case VARY_MATCH: |
62e76326 | 529 | /* This is the correct entity for this request. Continue */ |
bf8fe701 | 530 | debugs(88, 2, "clientProcessHit: Vary MATCH!"); |
62e76326 | 531 | break; |
532 | ||
edce4d98 | 533 | case VARY_OTHER: |
62e76326 | 534 | /* This is not the correct entity for this request. We need |
535 | * to requery the cache. | |
536 | */ | |
86a2f789 | 537 | removeClientStoreReference(&sc, http); |
62e76326 | 538 | e = NULL; |
539 | /* Note: varyEvalyateMatch updates the request with vary information | |
540 | * so we only get here once. (it also takes care of cancelling loops) | |
541 | */ | |
26ac0430 | 542 | debugs(88, 2, "clientProcessHit: Vary detected!"); |
0655fa4d | 543 | clientGetMoreData(ourNode, http); |
62e76326 | 544 | return; |
545 | ||
edce4d98 | 546 | case VARY_CANCEL: |
62e76326 | 547 | /* varyEvaluateMatch found a object loop. Process as miss */ |
e0236918 | 548 | debugs(88, DBG_IMPORTANT, "clientProcessHit: Vary object loop!"); |
b8a899c0 | 549 | http->logType = LOG_TCP_MISS; // we lack a more precise LOG_*_MISS code |
0655fa4d | 550 | processMiss(); |
62e76326 | 551 | return; |
edce4d98 | 552 | } |
62e76326 | 553 | |
c2a7cefd | 554 | if (r->method == Http::METHOD_PURGE) { |
1b7514d9 | 555 | debugs(88, 5, "PURGE gets a HIT"); |
86a2f789 | 556 | removeClientStoreReference(&sc, http); |
62e76326 | 557 | e = NULL; |
0655fa4d | 558 | purgeRequest(); |
62e76326 | 559 | return; |
edce4d98 | 560 | } |
62e76326 | 561 | |
1b7514d9 AJ |
562 | if (e->checkNegativeHit() && !r->flags.noCacheHack()) { |
563 | debugs(88, 5, "negative-HIT"); | |
62e76326 | 564 | http->logType = LOG_TCP_NEGATIVE_HIT; |
0655fa4d | 565 | sendMoreData(result); |
70706149 AR |
566 | } else if (blockedHit()) { |
567 | debugs(88, 5, "send_hit forces a MISS"); | |
568 | http->logType = LOG_TCP_MISS; | |
569 | processMiss(); | |
570 | return; | |
bcfba8bd | 571 | } else if (!http->flags.internal && refreshCheckHTTP(e, r)) { |
bf8fe701 | 572 | debugs(88, 5, "clientCacheHit: in refreshCheck() block"); |
62e76326 | 573 | /* |
574 | * We hold a stale copy; it needs to be validated | |
575 | */ | |
576 | /* | |
450fe1cb | 577 | * The 'needValidation' flag is used to prevent forwarding |
62e76326 | 578 | * loops between siblings. If our copy of the object is stale, |
579 | * then we should probably only use parents for the validation | |
580 | * request. Otherwise two siblings could generate a loop if | |
581 | * both have a stale version of the object. | |
582 | */ | |
e857372a | 583 | r->flags.needValidation = true; |
62e76326 | 584 | |
585 | if (e->lastmod < 0) { | |
86310427 | 586 | debugs(88, 3, "validate HIT object? NO. Missing Last-Modified header. Do MISS."); |
62e76326 | 587 | /* |
588 | * Previous reply didn't have a Last-Modified header, | |
589 | * we cannot revalidate it. | |
590 | */ | |
591 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 592 | processMiss(); |
450fe1cb | 593 | } else if (r->flags.noCache) { |
86310427 | 594 | debugs(88, 3, "validate HIT object? NO. Client sent CC:no-cache. Do CLIENT_REFRESH_MISS"); |
62e76326 | 595 | /* |
596 | * This did not match a refresh pattern that overrides no-cache | |
597 | * we should honour the client no-cache header. | |
598 | */ | |
599 | http->logType = LOG_TCP_CLIENT_REFRESH_MISS; | |
0655fa4d | 600 | processMiss(); |
4e3f4dc7 | 601 | } else if (r->url.getScheme() == AnyP::PROTO_HTTP) { |
86310427 | 602 | debugs(88, 3, "validate HIT object? YES."); |
62e76326 | 603 | /* |
604 | * Object needs to be revalidated | |
605 | * XXX This could apply to FTP as well, if Last-Modified is known. | |
606 | */ | |
0655fa4d | 607 | processExpired(); |
62e76326 | 608 | } else { |
86310427 | 609 | debugs(88, 3, "validate HIT object? NO. Client protocol non-HTTP. Do MISS."); |
62e76326 | 610 | /* |
611 | * We don't know how to re-validate other protocols. Handle | |
612 | * them as if the object has expired. | |
613 | */ | |
614 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 615 | processMiss(); |
62e76326 | 616 | } |
1b7514d9 AJ |
617 | } else if (r->conditional()) { |
618 | debugs(88, 5, "conditional HIT"); | |
79c8035e | 619 | processConditional(result); |
1b7514d9 | 620 | } else { |
62e76326 | 621 | /* |
622 | * plain ol' cache hit | |
623 | */ | |
1b7514d9 | 624 | debugs(88, 5, "plain old HIT"); |
62e76326 | 625 | |
9a0a18de | 626 | #if USE_DELAY_POOLS |
ffdf45f2 | 627 | if (e->store_status != STORE_OK) |
849b826a | 628 | http->logType = LOG_TCP_MISS; |
5bf4d170 | 629 | else |
630 | #endif | |
26ac0430 AJ |
631 | if (e->mem_status == IN_MEMORY) |
632 | http->logType = LOG_TCP_MEM_HIT; | |
633 | else if (Config.onoff.offline) | |
634 | http->logType = LOG_TCP_OFFLINE_HIT; | |
62e76326 | 635 | |
0655fa4d | 636 | sendMoreData(result); |
edce4d98 | 637 | } |
638 | } | |
639 | ||
7d5f62a4 | 640 | /** |
edce4d98 | 641 | * Prepare to fetch the object as it's a cache miss of some kind. |
642 | */ | |
643 | void | |
0655fa4d | 644 | clientReplyContext::processMiss() |
edce4d98 | 645 | { |
edce4d98 | 646 | char *url = http->uri; |
190154cf | 647 | HttpRequest *r = http->request; |
edce4d98 | 648 | ErrorState *err = NULL; |
7f06a3d8 | 649 | debugs(88, 4, r->method << ' ' << url); |
7d5f62a4 AJ |
650 | |
651 | /** | |
edce4d98 | 652 | * We might have a left-over StoreEntry from a failed cache hit |
653 | * or IMS request. | |
654 | */ | |
86a2f789 | 655 | if (http->storeEntry()) { |
656 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_SPECIAL)) { | |
fa84c01d | 657 | debugs(88, DBG_CRITICAL, "clientProcessMiss: miss on a special object (" << url << ")."); |
91369933 | 658 | debugs(88, DBG_CRITICAL, "\tlog_type = " << http->logType.c_str()); |
3900307b | 659 | http->storeEntry()->dump(1); |
62e76326 | 660 | } |
661 | ||
86a2f789 | 662 | removeClientStoreReference(&sc, http); |
edce4d98 | 663 | } |
62e76326 | 664 | |
7d5f62a4 | 665 | /** Check if its a PURGE request to be actioned. */ |
c2a7cefd | 666 | if (r->method == Http::METHOD_PURGE) { |
0655fa4d | 667 | purgeRequest(); |
62e76326 | 668 | return; |
edce4d98 | 669 | } |
914b89a2 | 670 | |
7d5f62a4 | 671 | /** Check if its an 'OTHER' request. Purge all cached entries if so and continue. */ |
c2a7cefd | 672 | if (r->method == Http::METHOD_OTHER) { |
26ac0430 | 673 | purgeAllCached(); |
60745f24 | 674 | } |
62e76326 | 675 | |
7d5f62a4 | 676 | /** Check if 'only-if-cached' flag is set. Action if so. */ |
0655fa4d | 677 | if (http->onlyIfCached()) { |
678 | processOnlyIfCachedMiss(); | |
62e76326 | 679 | return; |
edce4d98 | 680 | } |
62e76326 | 681 | |
42829656 | 682 | /// Deny loops |
450fe1cb | 683 | if (r->flags.loopDetected) { |
955394ce AJ |
684 | http->al->http.code = Http::scForbidden; |
685 | err = clientBuildError(ERR_ACCESS_DENIED, Http::scForbidden, NULL, http->getConn()->clientConnection->remote, http->request); | |
f206b652 | 686 | createStoreEntry(r->method, RequestFlags()); |
86a2f789 | 687 | errorAppendEntry(http->storeEntry(), err); |
0655fa4d | 688 | triggerInitialStoreRead(); |
62e76326 | 689 | return; |
edce4d98 | 690 | } else { |
26ac0430 | 691 | assert(http->out.offset == 0); |
0655fa4d | 692 | createStoreEntry(r->method, r->flags); |
693 | triggerInitialStoreRead(); | |
62e76326 | 694 | |
695 | if (http->redirect.status) { | |
06a5ae20 | 696 | HttpReply *rep = new HttpReply; |
62e76326 | 697 | http->logType = LOG_TCP_REDIRECT; |
d88e3c49 | 698 | http->storeEntry()->releaseRequest(); |
06a5ae20 | 699 | rep->redirect(http->redirect.status, http->redirect.location); |
db237875 | 700 | http->storeEntry()->replaceHttpReply(rep); |
86a2f789 | 701 | http->storeEntry()->complete(); |
62e76326 | 702 | return; |
703 | } | |
704 | ||
9174ba3d | 705 | assert(r->clientConnectionManager == http->getConn()); |
655daa06 | 706 | |
7d5f62a4 | 707 | /** Start forwarding to get the new object from network */ |
73c36fd9 | 708 | Comm::ConnectionPointer conn = http->getConn() != NULL ? http->getConn()->clientConnection : NULL; |
4bf68cfa | 709 | FwdState::Start(conn, http->storeEntry(), r, http->al); |
edce4d98 | 710 | } |
711 | } | |
712 | ||
7d5f62a4 | 713 | /** |
edce4d98 | 714 | * client issued a request with an only-if-cached cache-control directive; |
715 | * we did not find a cached object that can be returned without | |
716 | * contacting other servers; | |
717 | * respond with a 504 (Gateway Timeout) as suggested in [RFC 2068] | |
718 | */ | |
0655fa4d | 719 | void |
720 | clientReplyContext::processOnlyIfCachedMiss() | |
edce4d98 | 721 | { |
7f06a3d8 | 722 | debugs(88, 4, http->request->method << ' ' << http->uri); |
f11c8e2f AJ |
723 | http->al->http.code = Http::scGatewayTimeout; |
724 | ErrorState *err = clientBuildError(ERR_ONLY_IF_CACHED_MISS, Http::scGatewayTimeout, NULL, | |
73c36fd9 | 725 | http->getConn()->clientConnection->remote, http->request); |
86a2f789 | 726 | removeClientStoreReference(&sc, http); |
0655fa4d | 727 | startError(err); |
edce4d98 | 728 | } |
729 | ||
79c8035e AR |
730 | /// process conditional request from client |
731 | void | |
732 | clientReplyContext::processConditional(StoreIOBuffer &result) | |
733 | { | |
a2bd457d | 734 | StoreEntry *const e = http->storeEntry(); |
79c8035e | 735 | |
9b769c67 | 736 | if (e->getReply()->sline.status() != Http::scOkay) { |
79c8035e | 737 | debugs(88, 4, "clientReplyContext::processConditional: Reply code " << |
9b769c67 | 738 | e->getReply()->sline.status() << " != 200"); |
79c8035e AR |
739 | http->logType = LOG_TCP_MISS; |
740 | processMiss(); | |
741 | return; | |
742 | } | |
743 | ||
744 | HttpRequest &r = *http->request; | |
745 | ||
746 | if (r.header.has(HDR_IF_MATCH) && !e->hasIfMatchEtag(r)) { | |
747 | // RFC 2616: reply with 412 Precondition Failed if If-Match did not match | |
748 | sendPreconditionFailedError(); | |
749 | return; | |
750 | } | |
751 | ||
752 | bool matchedIfNoneMatch = false; | |
753 | if (r.header.has(HDR_IF_NONE_MATCH)) { | |
754 | if (!e->hasIfNoneMatchEtag(r)) { | |
755 | // RFC 2616: ignore IMS if If-None-Match did not match | |
e857372a | 756 | r.flags.ims = false; |
79c8035e AR |
757 | r.ims = -1; |
758 | r.imslen = 0; | |
759 | r.header.delById(HDR_IF_MODIFIED_SINCE); | |
760 | http->logType = LOG_TCP_MISS; | |
761 | sendMoreData(result); | |
762 | return; | |
763 | } | |
764 | ||
45e5102d | 765 | if (!r.flags.ims) { |
79c8035e | 766 | // RFC 2616: if If-None-Match matched and there is no IMS, |
a2bd457d AJ |
767 | // reply with 304 Not Modified or 412 Precondition Failed |
768 | sendNotModifiedOrPreconditionFailedError(); | |
79c8035e AR |
769 | return; |
770 | } | |
771 | ||
a2bd457d | 772 | // otherwise check IMS below to decide if we reply with 304 or 412 |
79c8035e AR |
773 | matchedIfNoneMatch = true; |
774 | } | |
775 | ||
45e5102d | 776 | if (r.flags.ims) { |
79c8035e AR |
777 | // handle If-Modified-Since requests from the client |
778 | if (e->modifiedSince(&r)) { | |
779 | http->logType = LOG_TCP_IMS_HIT; | |
780 | sendMoreData(result); | |
781 | return; | |
782 | } | |
783 | ||
784 | if (matchedIfNoneMatch) { | |
a2bd457d AJ |
785 | // If-None-Match matched, reply with 304 Not Modified or |
786 | // 412 Precondition Failed | |
787 | sendNotModifiedOrPreconditionFailedError(); | |
79c8035e AR |
788 | return; |
789 | } | |
790 | ||
791 | // otherwise reply with 304 Not Modified | |
a2bd457d | 792 | sendNotModified(); |
79c8035e AR |
793 | } |
794 | } | |
795 | ||
70706149 AR |
796 | /// whether squid.conf send_hit prevents us from serving this hit |
797 | bool | |
798 | clientReplyContext::blockedHit() const | |
799 | { | |
800 | if (!Config.accessList.sendHit) | |
801 | return false; // hits are not blocked by default | |
802 | ||
803 | if (http->flags.internal) | |
804 | return false; // internal content "hits" cannot be blocked | |
805 | ||
806 | if (const HttpReply *rep = http->storeEntry()->getReply()) { | |
829030b5 | 807 | std::unique_ptr<ACLFilledChecklist> chl(clientAclChecklistCreate(Config.accessList.sendHit, http)); |
70706149 AR |
808 | chl->reply = const_cast<HttpReply*>(rep); // ACLChecklist API bug |
809 | HTTPMSGLOCK(chl->reply); | |
810 | return chl->fastCheck() != ACCESS_ALLOWED; // when in doubt, block | |
811 | } | |
812 | ||
813 | // This does not happen, I hope, because we are called from CacheHit, which | |
814 | // is called via a storeClientCopy() callback, and store should initialize | |
815 | // the reply before calling that callback. | |
816 | debugs(88, 3, "Missing reply!"); | |
817 | return false; | |
818 | } | |
819 | ||
edce4d98 | 820 | void |
e6ccf245 | 821 | clientReplyContext::purgeRequestFindObjectToPurge() |
26ac0430 | 822 | { |
e6ccf245 | 823 | /* Try to find a base entry */ |
be4d35dc | 824 | http->flags.purging = true; |
e6ccf245 | 825 | lookingforstore = 1; |
26ac0430 AJ |
826 | |
827 | // TODO: can we use purgeAllCached() here instead of doing the | |
828 | // getPublicByRequestMethod() dance? | |
c2a7cefd | 829 | StoreEntry::getPublicByRequestMethod(this, http->request, Http::METHOD_GET); |
e6ccf245 | 830 | } |
831 | ||
c1520b67 AJ |
832 | // Purges all entries with a given url |
833 | // TODO: move to SideAgent parent, when we have one | |
60745f24 | 834 | /* |
835 | * We probably cannot purge Vary-affected responses because their MD5 | |
836 | * keys depend on vary headers. | |
837 | */ | |
c1520b67 | 838 | void |
90bd689c | 839 | purgeEntriesByUrl(HttpRequest * req, const char *url) |
c1520b67 | 840 | { |
8dceeee3 BR |
841 | #if USE_HTCP |
842 | bool get_or_head_sent = false; | |
843 | #endif | |
26ac0430 | 844 | |
c2a7cefd AJ |
845 | for (HttpRequestMethod m(Http::METHOD_NONE); m != Http::METHOD_ENUM_END; ++m) { |
846 | if (m.respMaybeCacheable()) { | |
c1520b67 | 847 | if (StoreEntry *entry = storeGetPublic(url, m)) { |
7f06a3d8 | 848 | debugs(88, 5, "purging " << *entry << ' ' << m << ' ' << url); |
90bd689c | 849 | #if USE_HTCP |
8dceeee3 | 850 | neighborsHtcpClear(entry, url, req, m, HTCP_CLR_INVALIDATION); |
c2a7cefd | 851 | if (m == Http::METHOD_GET || m == Http::METHOD_HEAD) { |
8dceeee3 BR |
852 | get_or_head_sent = true; |
853 | } | |
90bd689c | 854 | #endif |
8dceeee3 | 855 | entry->release(); |
c1520b67 AJ |
856 | } |
857 | } | |
858 | } | |
8dceeee3 BR |
859 | |
860 | #if USE_HTCP | |
861 | if (!get_or_head_sent) { | |
c2a7cefd | 862 | neighborsHtcpClear(NULL, url, req, HttpRequestMethod(Http::METHOD_GET), HTCP_CLR_INVALIDATION); |
8dceeee3 BR |
863 | } |
864 | #endif | |
c1520b67 AJ |
865 | } |
866 | ||
26ac0430 | 867 | void |
60745f24 | 868 | clientReplyContext::purgeAllCached() |
869 | { | |
851feda6 AJ |
870 | // XXX: performance regression, c_str() reallocates |
871 | SBuf url(http->request->effectiveRequestUri()); | |
872 | purgeEntriesByUrl(http->request, url.c_str()); | |
35ececa5 | 873 | } |
60745f24 | 874 | |
e6ccf245 | 875 | void |
3b13a8fd | 876 | clientReplyContext::created(StoreEntry *newEntry) |
e6ccf245 | 877 | { |
878 | if (lookingforstore == 1) | |
62e76326 | 879 | purgeFoundGet(newEntry); |
e6ccf245 | 880 | else if (lookingforstore == 2) |
62e76326 | 881 | purgeFoundHead(newEntry); |
e6ccf245 | 882 | else if (lookingforstore == 3) |
62e76326 | 883 | purgeDoPurgeGet(newEntry); |
e6ccf245 | 884 | else if (lookingforstore == 4) |
62e76326 | 885 | purgeDoPurgeHead(newEntry); |
e6ccf245 | 886 | else if (lookingforstore == 5) |
62e76326 | 887 | identifyFoundObject(newEntry); |
e6ccf245 | 888 | } |
889 | ||
890 | void | |
3b13a8fd | 891 | clientReplyContext::purgeFoundGet(StoreEntry *newEntry) |
e6ccf245 | 892 | { |
893 | if (newEntry->isNull()) { | |
62e76326 | 894 | lookingforstore = 2; |
c2a7cefd | 895 | StoreEntry::getPublicByRequestMethod(this, http->request, Http::METHOD_HEAD); |
e6ccf245 | 896 | } else |
62e76326 | 897 | purgeFoundObject (newEntry); |
e6ccf245 | 898 | } |
899 | ||
900 | void | |
3b13a8fd | 901 | clientReplyContext::purgeFoundHead(StoreEntry *newEntry) |
e6ccf245 | 902 | { |
903 | if (newEntry->isNull()) | |
62e76326 | 904 | purgeDoMissPurge(); |
e6ccf245 | 905 | else |
62e76326 | 906 | purgeFoundObject (newEntry); |
e6ccf245 | 907 | } |
62e76326 | 908 | |
e6ccf245 | 909 | void |
3b13a8fd | 910 | clientReplyContext::purgeFoundObject(StoreEntry *entry) |
e6ccf245 | 911 | { |
912 | assert (entry && !entry->isNull()); | |
e4b9a2f0 | 913 | |
914 | if (EBIT_TEST(entry->flags, ENTRY_SPECIAL)) { | |
915 | http->logType = LOG_TCP_DENIED; | |
955394ce | 916 | ErrorState *err = clientBuildError(ERR_ACCESS_DENIED, Http::scForbidden, NULL, |
73c36fd9 | 917 | http->getConn()->clientConnection->remote, http->request); |
e4b9a2f0 | 918 | startError(err); |
c877c0bc | 919 | return; // XXX: leaking unused entry if some store does not keep it |
e4b9a2f0 | 920 | } |
921 | ||
8bcf08e0 | 922 | StoreIOBuffer localTempBuffer; |
62e76326 | 923 | /* Swap in the metadata */ |
86a2f789 | 924 | http->storeEntry(entry); |
34266cde | 925 | |
1bfe9ade | 926 | http->storeEntry()->lock("clientReplyContext::purgeFoundObject"); |
c877c0bc AR |
927 | http->storeEntry()->createMemObject(storeId(), http->log_uri, |
928 | http->request->method); | |
34266cde | 929 | |
86a2f789 | 930 | sc = storeClientListAdd(http->storeEntry(), this); |
34266cde | 931 | |
62e76326 | 932 | http->logType = LOG_TCP_HIT; |
34266cde | 933 | |
62e76326 | 934 | reqofs = 0; |
34266cde | 935 | |
8bcf08e0 | 936 | localTempBuffer.offset = http->out.offset; |
34266cde | 937 | |
8bcf08e0 | 938 | localTempBuffer.length = next()->readBuffer.length; |
34266cde | 939 | |
8bcf08e0 | 940 | localTempBuffer.data = next()->readBuffer.data; |
34266cde | 941 | |
86a2f789 | 942 | storeClientCopy(sc, http->storeEntry(), |
8bcf08e0 | 943 | localTempBuffer, CacheHit, this); |
e6ccf245 | 944 | } |
945 | ||
946 | void | |
947 | clientReplyContext::purgeRequest() | |
edce4d98 | 948 | { |
bf8fe701 | 949 | debugs(88, 3, "Config2.onoff.enable_purge = " << |
950 | Config2.onoff.enable_purge); | |
62e76326 | 951 | |
edce4d98 | 952 | if (!Config2.onoff.enable_purge) { |
62e76326 | 953 | http->logType = LOG_TCP_DENIED; |
955394ce | 954 | ErrorState *err = clientBuildError(ERR_ACCESS_DENIED, Http::scForbidden, NULL, http->getConn()->clientConnection->remote, http->request); |
0655fa4d | 955 | startError(err); |
62e76326 | 956 | return; |
edce4d98 | 957 | } |
62e76326 | 958 | |
edce4d98 | 959 | /* Release both IP cache */ |
5c51bffb | 960 | ipcacheInvalidate(http->request->url.host()); |
edce4d98 | 961 | |
e6ccf245 | 962 | if (!http->flags.purging) |
62e76326 | 963 | purgeRequestFindObjectToPurge(); |
e6ccf245 | 964 | else |
62e76326 | 965 | purgeDoMissPurge(); |
e6ccf245 | 966 | } |
967 | ||
968 | void | |
969 | clientReplyContext::purgeDoMissPurge() | |
970 | { | |
29b8d8d6 | 971 | http->logType = LOG_TCP_MISS; |
e6ccf245 | 972 | lookingforstore = 3; |
c2a7cefd | 973 | StoreEntry::getPublicByRequestMethod(this,http->request, Http::METHOD_GET); |
e6ccf245 | 974 | } |
975 | ||
976 | void | |
3b13a8fd | 977 | clientReplyContext::purgeDoPurgeGet(StoreEntry *newEntry) |
e6ccf245 | 978 | { |
979 | assert (newEntry); | |
980 | /* Move to new() when that is created */ | |
955394ce | 981 | purgeStatus = Http::scNotFound; |
e6ccf245 | 982 | |
983 | if (!newEntry->isNull()) { | |
62e76326 | 984 | /* Release the cached URI */ |
bf8fe701 | 985 | debugs(88, 4, "clientPurgeRequest: GET '" << newEntry->url() << "'" ); |
8dceeee3 | 986 | #if USE_HTCP |
c2a7cefd | 987 | neighborsHtcpClear(newEntry, NULL, http->request, HttpRequestMethod(Http::METHOD_GET), HTCP_CLR_PURGE); |
8dceeee3 | 988 | #endif |
5f33b71d | 989 | newEntry->release(); |
955394ce | 990 | purgeStatus = Http::scOkay; |
edce4d98 | 991 | } |
62e76326 | 992 | |
e6ccf245 | 993 | lookingforstore = 4; |
c2a7cefd | 994 | StoreEntry::getPublicByRequestMethod(this, http->request, Http::METHOD_HEAD); |
e6ccf245 | 995 | } |
996 | ||
997 | void | |
3b13a8fd | 998 | clientReplyContext::purgeDoPurgeHead(StoreEntry *newEntry) |
e6ccf245 | 999 | { |
4fc0ac76 | 1000 | if (newEntry && !newEntry->isNull()) { |
851feda6 | 1001 | debugs(88, 4, "HEAD " << newEntry->url()); |
8dceeee3 | 1002 | #if USE_HTCP |
c2a7cefd | 1003 | neighborsHtcpClear(newEntry, NULL, http->request, HttpRequestMethod(Http::METHOD_HEAD), HTCP_CLR_PURGE); |
8dceeee3 | 1004 | #endif |
5f33b71d | 1005 | newEntry->release(); |
955394ce | 1006 | purgeStatus = Http::scOkay; |
edce4d98 | 1007 | } |
62e76326 | 1008 | |
edce4d98 | 1009 | /* And for Vary, release the base URI if none of the headers was included in the request */ |
62e76326 | 1010 | |
edce4d98 | 1011 | if (http->request->vary_headers |
62e76326 | 1012 | && !strstr(http->request->vary_headers, "=")) { |
851feda6 AJ |
1013 | // XXX: performance regression, c_str() reallocates |
1014 | SBuf tmp(http->request->effectiveRequestUri()); | |
1015 | StoreEntry *entry = storeGetPublic(tmp.c_str(), Http::METHOD_GET); | |
62e76326 | 1016 | |
1017 | if (entry) { | |
851feda6 | 1018 | debugs(88, 4, "Vary GET " << entry->url()); |
8dceeee3 | 1019 | #if USE_HTCP |
c2a7cefd | 1020 | neighborsHtcpClear(entry, NULL, http->request, HttpRequestMethod(Http::METHOD_GET), HTCP_CLR_PURGE); |
8dceeee3 | 1021 | #endif |
5f33b71d | 1022 | entry->release(); |
955394ce | 1023 | purgeStatus = Http::scOkay; |
62e76326 | 1024 | } |
1025 | ||
851feda6 | 1026 | entry = storeGetPublic(tmp.c_str(), Http::METHOD_HEAD); |
62e76326 | 1027 | |
1028 | if (entry) { | |
851feda6 | 1029 | debugs(88, 4, "Vary HEAD " << entry->url()); |
8dceeee3 | 1030 | #if USE_HTCP |
c2a7cefd | 1031 | neighborsHtcpClear(entry, NULL, http->request, HttpRequestMethod(Http::METHOD_HEAD), HTCP_CLR_PURGE); |
8dceeee3 | 1032 | #endif |
5f33b71d | 1033 | entry->release(); |
955394ce | 1034 | purgeStatus = Http::scOkay; |
62e76326 | 1035 | } |
edce4d98 | 1036 | } |
62e76326 | 1037 | |
edce4d98 | 1038 | /* |
1039 | * Make a new entry to hold the reply to be written | |
1040 | * to the client. | |
1041 | */ | |
528b2c61 | 1042 | /* FIXME: This doesn't need to go through the store. Simply |
1043 | * push down the client chain | |
1044 | */ | |
f206b652 | 1045 | createStoreEntry(http->request->method, RequestFlags()); |
62e76326 | 1046 | |
0655fa4d | 1047 | triggerInitialStoreRead(); |
62e76326 | 1048 | |
7dc5f514 | 1049 | HttpReply *rep = new HttpReply; |
11992b6f | 1050 | rep->setHeaders(purgeStatus, NULL, NULL, 0, 0, -1); |
7dc5f514 | 1051 | http->storeEntry()->replaceHttpReply(rep); |
86a2f789 | 1052 | http->storeEntry()->complete(); |
edce4d98 | 1053 | } |
1054 | ||
1055 | void | |
0655fa4d | 1056 | clientReplyContext::traceReply(clientStreamNode * node) |
edce4d98 | 1057 | { |
076df709 | 1058 | clientStreamNode *nextNode = (clientStreamNode *)node->node.next->data; |
8bcf08e0 | 1059 | StoreIOBuffer localTempBuffer; |
f206b652 | 1060 | createStoreEntry(http->request->method, RequestFlags()); |
076df709 FC |
1061 | localTempBuffer.offset = nextNode->readBuffer.offset + headers_sz; |
1062 | localTempBuffer.length = nextNode->readBuffer.length; | |
1063 | localTempBuffer.data = nextNode->readBuffer.data; | |
86a2f789 | 1064 | storeClientCopy(sc, http->storeEntry(), |
8bcf08e0 | 1065 | localTempBuffer, SendMoreData, this); |
d88e3c49 | 1066 | http->storeEntry()->releaseRequest(); |
3900307b | 1067 | http->storeEntry()->buffer(); |
7dc5f514 | 1068 | HttpReply *rep = new HttpReply; |
955394ce | 1069 | rep->setHeaders(Http::scOkay, NULL, "text/plain", http->request->prefixLen(), 0, squid_curtime); |
db237875 | 1070 | http->storeEntry()->replaceHttpReply(rep); |
5cafad19 | 1071 | http->request->swapOut(http->storeEntry()); |
86a2f789 | 1072 | http->storeEntry()->complete(); |
edce4d98 | 1073 | } |
1074 | ||
1075 | #define SENDING_BODY 0 | |
1076 | #define SENDING_HDRSONLY 1 | |
1077 | int | |
0655fa4d | 1078 | clientReplyContext::checkTransferDone() |
edce4d98 | 1079 | { |
86a2f789 | 1080 | StoreEntry *entry = http->storeEntry(); |
62e76326 | 1081 | |
edce4d98 | 1082 | if (entry == NULL) |
62e76326 | 1083 | return 0; |
1084 | ||
1085 | /* | |
edce4d98 | 1086 | * For now, 'done_copying' is used for special cases like |
1087 | * Range and HEAD requests. | |
1088 | */ | |
0655fa4d | 1089 | if (http->flags.done_copying) |
62e76326 | 1090 | return 1; |
1091 | ||
450fe1cb | 1092 | if (http->request->flags.chunkedReply && !flags.complete) { |
4ad60609 AR |
1093 | // last-chunk was not sent |
1094 | return 0; | |
1095 | } | |
1096 | ||
edce4d98 | 1097 | /* |
1098 | * Handle STORE_OK objects. | |
1099 | * objectLen(entry) will be set proprely. | |
26ac0430 | 1100 | * RC: Does objectLen(entry) include the Headers? |
0e3be1ea | 1101 | * RC: Yes. |
edce4d98 | 1102 | */ |
1103 | if (entry->store_status == STORE_OK) { | |
0655fa4d | 1104 | return storeOKTransferDone(); |
e39b9382 | 1105 | } else { |
0655fa4d | 1106 | return storeNotOKTransferDone(); |
edce4d98 | 1107 | } |
e39b9382 | 1108 | } |
1109 | ||
1110 | int | |
1111 | clientReplyContext::storeOKTransferDone() const | |
1112 | { | |
aa1a691e AR |
1113 | assert(http->storeEntry()->objectLen() >= 0); |
1114 | assert(http->storeEntry()->objectLen() >= headers_sz); | |
47f6e231 | 1115 | if (http->out.offset >= http->storeEntry()->objectLen() - headers_sz) { |
26ac0430 AJ |
1116 | debugs(88,3,HERE << "storeOKTransferDone " << |
1117 | " out.offset=" << http->out.offset << | |
1118 | " objectLen()=" << http->storeEntry()->objectLen() << | |
1119 | " headers_sz=" << headers_sz); | |
62e76326 | 1120 | return 1; |
47f6e231 | 1121 | } |
62e76326 | 1122 | |
e39b9382 | 1123 | return 0; |
1124 | } | |
1125 | ||
1126 | int | |
1127 | clientReplyContext::storeNotOKTransferDone() const | |
1128 | { | |
edce4d98 | 1129 | /* |
1130 | * Now, handle STORE_PENDING objects | |
1131 | */ | |
86a2f789 | 1132 | MemObject *mem = http->storeEntry()->mem_obj; |
edce4d98 | 1133 | assert(mem != NULL); |
1134 | assert(http->request != NULL); | |
0e3be1ea | 1135 | /* mem->reply was wrong because it uses the UPSTREAM header length!!! */ |
8bcf08e0 | 1136 | HttpReply const *curReply = mem->getReply(); |
62e76326 | 1137 | |
e39b9382 | 1138 | if (headers_sz == 0) |
62e76326 | 1139 | /* haven't found end of headers yet */ |
1140 | return 0; | |
e39b9382 | 1141 | |
edce4d98 | 1142 | /* |
1143 | * Figure out how much data we are supposed to send. | |
1144 | * If we are sending a body and we don't have a content-length, | |
1145 | * then we must wait for the object to become STORE_OK. | |
1146 | */ | |
8bcf08e0 | 1147 | if (curReply->content_length < 0) |
62e76326 | 1148 | return 0; |
e39b9382 | 1149 | |
8bcf08e0 | 1150 | int64_t expectedLength = curReply->content_length + http->out.headers_sz; |
62e76326 | 1151 | |
e39b9382 | 1152 | if (http->out.size < expectedLength) |
62e76326 | 1153 | return 0; |
47f6e231 | 1154 | else { |
26ac0430 AJ |
1155 | debugs(88,3,HERE << "storeNotOKTransferDone " << |
1156 | " out.size=" << http->out.size << | |
1157 | " expectedLength=" << expectedLength); | |
62e76326 | 1158 | return 1; |
47f6e231 | 1159 | } |
edce4d98 | 1160 | } |
1161 | ||
edce4d98 | 1162 | /* A write has completed, what is the next status based on the |
1163 | * canonical request data? | |
1164 | * 1 something is wrong | |
1165 | * 0 nothing is wrong. | |
1166 | * | |
1167 | */ | |
1168 | int | |
59a1efb2 | 1169 | clientHttpRequestStatus(int fd, ClientHttpRequest const *http) |
edce4d98 | 1170 | { |
062f7f4e FC |
1171 | #if SIZEOF_INT64_T == 4 |
1172 | if (http->out.size > 0x7FFF0000) { | |
e0236918 FC |
1173 | debugs(88, DBG_IMPORTANT, "WARNING: closing FD " << fd << " to prevent out.size counter overflow"); |
1174 | debugs(88, DBG_IMPORTANT, "\tclient " << http->getConn()->peer); | |
1175 | debugs(88, DBG_IMPORTANT, "\treceived " << http->out.size << " bytes"); | |
1176 | debugs(88, DBG_IMPORTANT, "\tURI " << http->log_uri); | |
062f7f4e FC |
1177 | return 1; |
1178 | } | |
1179 | ||
1180 | if (http->out.offset > 0x7FFF0000) { | |
e0236918 FC |
1181 | debugs(88, DBG_IMPORTANT, "WARNING: closing FD " << fd < " to prevent out.offset counter overflow"); |
1182 | debugs(88, DBG_IMPORTANT, "\tclient " << http->getConn()->peer); | |
1183 | debugs(88, DBG_IMPORTANT, "\treceived " << http->out.size << " bytes, offset " << http->out.offset); | |
1184 | debugs(88, DBG_IMPORTANT, "\tURI " << http->log_uri); | |
062f7f4e FC |
1185 | return 1; |
1186 | } | |
1187 | ||
1188 | #endif | |
edce4d98 | 1189 | return 0; |
1190 | } | |
1191 | ||
62e76326 | 1192 | /* Preconditions: |
edce4d98 | 1193 | * *http is a valid structure. |
1194 | * fd is either -1, or an open fd. | |
1195 | * | |
1196 | * TODO: enumify this | |
1197 | * | |
1198 | * This function is used by any http request sink, to determine the status | |
1199 | * of the object. | |
1200 | */ | |
1201 | clientStream_status_t | |
59a1efb2 | 1202 | clientReplyStatus(clientStreamNode * aNode, ClientHttpRequest * http) |
edce4d98 | 1203 | { |
0655fa4d | 1204 | clientReplyContext *context = dynamic_cast<clientReplyContext *>(aNode->data.getRaw()); |
1205 | assert (context); | |
1206 | assert (context->http == http); | |
1207 | return context->replyStatus(); | |
1208 | } | |
1209 | ||
1210 | clientStream_status_t | |
1211 | clientReplyContext::replyStatus() | |
1212 | { | |
edce4d98 | 1213 | int done; |
1214 | /* Here because lower nodes don't need it */ | |
62e76326 | 1215 | |
3daaed1a | 1216 | if (http->storeEntry() == NULL) { |
1217 | debugs(88, 5, "clientReplyStatus: no storeEntry"); | |
f53969cc | 1218 | return STREAM_FAILED; /* yuck, but what can we do? */ |
3daaed1a | 1219 | } |
62e76326 | 1220 | |
3daaed1a | 1221 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) { |
62e76326 | 1222 | /* TODO: Could upstream read errors (result.flags.error) be |
1223 | * lost, and result in undersize requests being considered | |
1224 | * complete. Should we tcp reset such connections ? | |
1225 | */ | |
3daaed1a | 1226 | debugs(88, 5, "clientReplyStatus: aborted storeEntry"); |
62e76326 | 1227 | return STREAM_FAILED; |
3daaed1a | 1228 | } |
62e76326 | 1229 | |
0655fa4d | 1230 | if ((done = checkTransferDone()) != 0 || flags.complete) { |
1bfe9ade | 1231 | debugs(88, 5, "clientReplyStatus: transfer is DONE: " << done << flags.complete); |
62e76326 | 1232 | /* Ok we're finished, but how? */ |
1233 | ||
4ad60609 AR |
1234 | const int64_t expectedBodySize = |
1235 | http->storeEntry()->getReply()->bodySize(http->request->method); | |
450fe1cb | 1236 | if (!http->request->flags.proxyKeepalive && expectedBodySize < 0) { |
bf8fe701 | 1237 | debugs(88, 5, "clientReplyStatus: closing, content_length < 0"); |
62e76326 | 1238 | return STREAM_FAILED; |
1239 | } | |
1240 | ||
1241 | if (!done) { | |
bf8fe701 | 1242 | debugs(88, 5, "clientReplyStatus: closing, !done, but read 0 bytes"); |
62e76326 | 1243 | return STREAM_FAILED; |
1244 | } | |
1245 | ||
4ad60609 | 1246 | if (expectedBodySize >= 0 && !http->gotEnough()) { |
bf8fe701 | 1247 | debugs(88, 5, "clientReplyStatus: client didn't get all it expected"); |
62e76326 | 1248 | return STREAM_UNPLANNED_COMPLETE; |
1249 | } | |
1250 | ||
ca6d5de2 AR |
1251 | debugs(88, 5, "clientReplyStatus: stream complete; keepalive=" << |
1252 | http->request->flags.proxyKeepalive); | |
1253 | return STREAM_COMPLETE; | |
edce4d98 | 1254 | } |
62e76326 | 1255 | |
16611143 | 1256 | // XXX: Should this be checked earlier? We could return above w/o checking. |
1257 | if (reply->receivedBodyTooLarge(*http->request, http->out.offset - 4096)) { | |
b51aec66 | 1258 | /* 4096 is a margin for the HTTP headers included in out.offset */ |
bf8fe701 | 1259 | debugs(88, 5, "clientReplyStatus: client reply body is too large"); |
62e76326 | 1260 | return STREAM_FAILED; |
0e3be1ea | 1261 | } |
62e76326 | 1262 | |
edce4d98 | 1263 | return STREAM_NONE; |
1264 | } | |
1265 | ||
62e76326 | 1266 | /* Responses with no body will not have a content-type header, |
edce4d98 | 1267 | * which breaks the rep_mime_type acl, which |
1268 | * coincidentally, is the most common acl for reply access lists. | |
1269 | * A better long term fix for this is to allow acl matchs on the various | |
26ac0430 AJ |
1270 | * status codes, and then supply a default ruleset that puts these |
1271 | * codes before any user defines access entries. That way the user | |
edce4d98 | 1272 | * can choose to block these responses where appropriate, but won't get |
1273 | * mysterious breakages. | |
1274 | */ | |
0655fa4d | 1275 | bool |
955394ce | 1276 | clientReplyContext::alwaysAllowResponse(Http::StatusCode sline) const |
edce4d98 | 1277 | { |
4ef4b952 | 1278 | bool result; |
1279 | ||
edce4d98 | 1280 | switch (sline) { |
62e76326 | 1281 | |
955394ce | 1282 | case Http::scContinue: |
62e76326 | 1283 | |
955394ce | 1284 | case Http::scSwitchingProtocols: |
62e76326 | 1285 | |
955394ce | 1286 | case Http::scProcessing: |
62e76326 | 1287 | |
955394ce | 1288 | case Http::scNoContent: |
62e76326 | 1289 | |
955394ce | 1290 | case Http::scNotModified: |
4ef4b952 | 1291 | result = true; |
62e76326 | 1292 | break; |
1293 | ||
edce4d98 | 1294 | default: |
4ef4b952 | 1295 | result = false; |
edce4d98 | 1296 | } |
4ef4b952 | 1297 | |
1298 | return result; | |
edce4d98 | 1299 | } |
1300 | ||
a5c8d64d AJ |
1301 | /** |
1302 | * Generate the reply headers sent to client. | |
1303 | * | |
1304 | * Filters out unwanted entries and hop-by-hop from original reply header | |
1305 | * then adds extra entries if we have more info than origin server | |
1306 | * then adds Squid specific entries | |
edce4d98 | 1307 | */ |
0655fa4d | 1308 | void |
1309 | clientReplyContext::buildReplyHeader() | |
edce4d98 | 1310 | { |
7dc5f514 | 1311 | HttpHeader *hdr = &reply->header; |
91369933 | 1312 | const bool is_hit = http->logType.isTcpHit(); |
190154cf | 1313 | HttpRequest *request = http->request; |
edce4d98 | 1314 | #if DONT_FILTER_THESE |
1315 | /* but you might want to if you run Squid as an HTTP accelerator */ | |
a9925b40 | 1316 | /* hdr->delById(HDR_ACCEPT_RANGES); */ |
1317 | hdr->delById(HDR_ETAG); | |
edce4d98 | 1318 | #endif |
62e76326 | 1319 | |
edce4d98 | 1320 | if (is_hit) |
a9925b40 | 1321 | hdr->delById(HDR_SET_COOKIE); |
f89d4012 | 1322 | // TODO: RFC 2965 : Must honour Cache-Control: no-cache="set-cookie2" and remove header. |
62e76326 | 1323 | |
23c6d7e7 | 1324 | // if there is not configured a peer proxy with login=PASS or login=PASSTHRU option enabled |
dcf3665b | 1325 | // remove the Proxy-Authenticate header |
23c6d7e7 | 1326 | if ( !request->peer_login || (strcmp(request->peer_login,"PASS") != 0 && strcmp(request->peer_login,"PASSTHRU") != 0)) |
26ac0430 | 1327 | reply->header.delById(HDR_PROXY_AUTHENTICATE); |
dcf3665b | 1328 | |
2cdeea82 | 1329 | reply->header.removeHopByHopEntries(); |
62e76326 | 1330 | |
1331 | // if (request->range) | |
7dc5f514 | 1332 | // clientBuildRangeHeader(http, reply); |
a5c8d64d | 1333 | |
edce4d98 | 1334 | /* |
1335 | * Add a estimated Age header on cache hits. | |
1336 | */ | |
1337 | if (is_hit) { | |
62e76326 | 1338 | /* |
1339 | * Remove any existing Age header sent by upstream caches | |
1340 | * (note that the existing header is passed along unmodified | |
1341 | * on cache misses) | |
1342 | */ | |
a9925b40 | 1343 | hdr->delById(HDR_AGE); |
62e76326 | 1344 | /* |
1345 | * This adds the calculated object age. Note that the details of the | |
1346 | * age calculation is performed by adjusting the timestamp in | |
3900307b | 1347 | * StoreEntry::timestampsSet(), not here. |
62e76326 | 1348 | */ |
bbe58ab5 | 1349 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_SPECIAL)) { |
a9925b40 | 1350 | hdr->delById(HDR_DATE); |
1351 | hdr->insertTime(HDR_DATE, squid_curtime); | |
90fa5816 AJ |
1352 | } else if (http->getConn() && http->getConn()->port->actAsOrigin) { |
1353 | // Swap the Date: header to current time if we are simulating an origin | |
fd49b08b A |
1354 | HttpHeaderEntry *h = hdr->findEntry(HDR_DATE); |
1355 | if (h) | |
1356 | hdr->putExt("X-Origin-Date", h->value.termedBuf()); | |
90fa5816 AJ |
1357 | hdr->delById(HDR_DATE); |
1358 | hdr->insertTime(HDR_DATE, squid_curtime); | |
fd49b08b A |
1359 | h = hdr->findEntry(HDR_EXPIRES); |
1360 | if (h && http->storeEntry()->expires >= 0) { | |
1361 | hdr->putExt("X-Origin-Expires", h->value.termedBuf()); | |
1362 | hdr->delById(HDR_EXPIRES); | |
1363 | hdr->insertTime(HDR_EXPIRES, squid_curtime + http->storeEntry()->expires - http->storeEntry()->timestamp); | |
1364 | } | |
90fa5816 AJ |
1365 | if (http->storeEntry()->timestamp <= squid_curtime) { |
1366 | // put X-Cache-Age: instead of Age: | |
fd49b08b | 1367 | char age[64]; |
fe3f0034 | 1368 | snprintf(age, sizeof(age), "%" PRId64, static_cast<int64_t>(squid_curtime - http->storeEntry()->timestamp)); |
fd49b08b A |
1369 | hdr->putExt("X-Cache-Age", age); |
1370 | } | |
a81e7089 | 1371 | } else if (http->storeEntry()->timestamp <= squid_curtime) { |
a9925b40 | 1372 | hdr->putInt(HDR_AGE, |
1373 | squid_curtime - http->storeEntry()->timestamp); | |
62e76326 | 1374 | /* Signal old objects. NB: rfc 2616 is not clear, |
1375 | * by implication, on whether we should do this to all | |
1376 | * responses, or only cache hits. | |
1377 | * 14.46 states it ONLY applys for heuristically caclulated | |
1378 | * freshness values, 13.2.4 doesn't specify the same limitation. | |
1379 | * We interpret RFC 2616 under the combination. | |
1380 | */ | |
1381 | /* TODO: if maxage or s-maxage is present, don't do this */ | |
1382 | ||
86a2f789 | 1383 | if (squid_curtime - http->storeEntry()->timestamp >= 86400) { |
8bcf08e0 FC |
1384 | char tbuf[512]; |
1385 | snprintf (tbuf, sizeof(tbuf), "%s %s %s", | |
62e76326 | 1386 | "113", ThisCache, |
1387 | "This cache hit is still fresh and more than 1 day old"); | |
8bcf08e0 | 1388 | hdr->putStr(HDR_WARNING, tbuf); |
62e76326 | 1389 | } |
1390 | } | |
a5c8d64d | 1391 | } |
528b2c61 | 1392 | |
a5c8d64d AJ |
1393 | /* RFC 2616: Section 14.18 |
1394 | * | |
1395 | * Add a Date: header if missing. | |
1396 | * We have access to a clock therefore are required to amend any shortcoming in servers. | |
1397 | * | |
1398 | * NP: done after Age: to prevent ENTRY_SPECIAL double-handling this header. | |
1399 | */ | |
1400 | if ( !hdr->has(HDR_DATE) ) { | |
f0dedeb5 | 1401 | if (!http->storeEntry()) |
a5c8d64d | 1402 | hdr->insertTime(HDR_DATE, squid_curtime); |
f0dedeb5 AJ |
1403 | else if (http->storeEntry()->timestamp > 0) |
1404 | hdr->insertTime(HDR_DATE, http->storeEntry()->timestamp); | |
1405 | else { | |
d9d98242 | 1406 | debugs(88,DBG_IMPORTANT,"BUG 3279: HTTP reply without Date:"); |
e78ae89a AJ |
1407 | /* dump something useful about the problem */ |
1408 | http->storeEntry()->dump(DBG_IMPORTANT); | |
f0dedeb5 | 1409 | } |
edce4d98 | 1410 | } |
62e76326 | 1411 | |
bcfba8bd | 1412 | // add Warnings required by RFC 2616 if serving a stale hit |
91369933 | 1413 | if (http->request->flags.staleIfHit && http->logType.isTcpHit()) { |
bcfba8bd | 1414 | hdr->putWarning(110, "Response is stale"); |
450fe1cb | 1415 | if (http->request->flags.needValidation) |
bcfba8bd AR |
1416 | hdr->putWarning(111, "Revalidation failed"); |
1417 | } | |
1418 | ||
0bd9aa82 | 1419 | /* Filter unproxyable authentication types */ |
91369933 | 1420 | if (http->logType.oldType != LOG_TCP_DENIED && |
d67acb4e | 1421 | hdr->has(HDR_WWW_AUTHENTICATE)) { |
62e76326 | 1422 | HttpHeaderPos pos = HttpHeaderInitPos; |
1423 | HttpHeaderEntry *e; | |
1424 | ||
26ac0430 | 1425 | int connection_auth_blocked = 0; |
a9925b40 | 1426 | while ((e = hdr->getEntry(&pos))) { |
d67acb4e | 1427 | if (e->id == HDR_WWW_AUTHENTICATE) { |
5b4117d8 | 1428 | const char *value = e->value.rawBuf(); |
62e76326 | 1429 | |
1430 | if ((strncasecmp(value, "NTLM", 4) == 0 && | |
1431 | (value[4] == '\0' || value[4] == ' ')) | |
1432 | || | |
1433 | (strncasecmp(value, "Negotiate", 9) == 0 && | |
d67acb4e | 1434 | (value[9] == '\0' || value[9] == ' ')) |
26ac0430 AJ |
1435 | || |
1436 | (strncasecmp(value, "Kerberos", 8) == 0 && | |
1437 | (value[8] == '\0' || value[8] == ' '))) { | |
450fe1cb | 1438 | if (request->flags.connectionAuthDisabled) { |
26ac0430 | 1439 | hdr->delAt(pos, connection_auth_blocked); |
d67acb4e AJ |
1440 | continue; |
1441 | } | |
e857372a | 1442 | request->flags.mustKeepalive = true; |
45e5102d | 1443 | if (!request->flags.accelerated && !request->flags.intercepted) { |
d67acb4e | 1444 | httpHeaderPutStrf(hdr, HDR_PROXY_SUPPORT, "Session-Based-Authentication"); |
26ac0430 | 1445 | /* |
f7a2e5a5 | 1446 | We send "Connection: Proxy-Support" header to mark |
26ac0430 AJ |
1447 | Proxy-Support as a hop-by-hop header for intermediaries that do not |
1448 | understand the semantics of this header. The RFC should have included | |
1449 | this recommendation. | |
1450 | */ | |
d67acb4e AJ |
1451 | httpHeaderPutStrf(hdr, HDR_CONNECTION, "Proxy-support"); |
1452 | } | |
1453 | break; | |
26ac0430 | 1454 | } |
62e76326 | 1455 | } |
1456 | } | |
d67acb4e AJ |
1457 | |
1458 | if (connection_auth_blocked) | |
ba9fb01d | 1459 | hdr->refreshMask(); |
0bd9aa82 | 1460 | } |
62e76326 | 1461 | |
2f1431ea | 1462 | #if USE_AUTH |
edce4d98 | 1463 | /* Handle authentication headers */ |
91369933 | 1464 | if (http->logType.oldType == LOG_TCP_DENIED && |
9b769c67 AJ |
1465 | ( reply->sline.status() == Http::scProxyAuthenticationRequired || |
1466 | reply->sline.status() == Http::scUnauthorized) | |
26ac0430 AJ |
1467 | ) { |
1468 | /* Add authentication header */ | |
1469 | /*! \todo alter errorstate to be accel on|off aware. The 0 on the next line | |
1470 | * depends on authenticate behaviour: all schemes to date send no extra | |
1471 | * data on 407/401 responses, and do not check the accel state on 401/407 | |
1472 | * responses | |
1473 | */ | |
1474 | authenticateFixHeader(reply, request->auth_user_request, request, 0, 1); | |
a33a428a AJ |
1475 | } else if (request->auth_user_request != NULL) |
1476 | authenticateFixHeader(reply, request->auth_user_request, request, http->flags.accel, 0); | |
2f1431ea | 1477 | #endif |
62e76326 | 1478 | |
edce4d98 | 1479 | /* Append X-Cache */ |
1480 | httpHeaderPutStrf(hdr, HDR_X_CACHE, "%s from %s", | |
62e76326 | 1481 | is_hit ? "HIT" : "MISS", getMyHostname()); |
1482 | ||
edce4d98 | 1483 | #if USE_CACHE_DIGESTS |
1484 | /* Append X-Cache-Lookup: -- temporary hack, to be removed @?@ @?@ */ | |
1485 | httpHeaderPutStrf(hdr, HDR_X_CACHE_LOOKUP, "%s from %s:%d", | |
0655fa4d | 1486 | lookup_type ? lookup_type : "NONE", |
62e76326 | 1487 | getMyHostname(), getMyPort()); |
1488 | ||
edce4d98 | 1489 | #endif |
62e76326 | 1490 | |
45e5102d | 1491 | const bool maySendChunkedReply = !request->multipartRangeRequest() && |
f7701e72 | 1492 | reply->sline.protocol == AnyP::PROTO_HTTP && // response is HTTP |
2592bc70 | 1493 | (request->http_ver >= Http::ProtocolVersion(1,1)); |
4ad60609 | 1494 | |
f529bb20 | 1495 | /* Check whether we should send keep-alive */ |
9b769c67 | 1496 | if (!Config.onoff.error_pconns && reply->sline.status() >= 400 && !request->flags.mustKeepalive) { |
bf8fe701 | 1497 | debugs(33, 3, "clientBuildReplyHeader: Error, don't keep-alive"); |
e857372a | 1498 | request->flags.proxyKeepalive = false; |
450fe1cb | 1499 | } else if (!Config.onoff.client_pconns && !request->flags.mustKeepalive) { |
17b57873 | 1500 | debugs(33, 2, "clientBuildReplyHeader: Connection Keep-Alive not requested by admin or client"); |
e857372a | 1501 | request->flags.proxyKeepalive = false; |
450fe1cb | 1502 | } else if (request->flags.proxyKeepalive && shutting_down) { |
f529bb20 | 1503 | debugs(88, 3, "clientBuildReplyHeader: Shutting down, don't keep-alive."); |
e857372a | 1504 | request->flags.proxyKeepalive = false; |
450fe1cb | 1505 | } else if (request->flags.connectionAuth && !reply->keep_alive) { |
26ac0430 | 1506 | debugs(33, 2, "clientBuildReplyHeader: Connection oriented auth but server side non-persistent"); |
e857372a | 1507 | request->flags.proxyKeepalive = false; |
4ad60609 | 1508 | } else if (reply->bodySize(request->method) < 0 && !maySendChunkedReply) { |
17b57873 | 1509 | debugs(88, 3, "clientBuildReplyHeader: can't keep-alive, unknown body size" ); |
e857372a | 1510 | request->flags.proxyKeepalive = false; |
450fe1cb | 1511 | } else if (fdUsageHigh()&& !request->flags.mustKeepalive) { |
17b57873 | 1512 | debugs(88, 3, "clientBuildReplyHeader: Not many unused FDs, can't keep-alive"); |
e857372a | 1513 | request->flags.proxyKeepalive = false; |
450fe1cb | 1514 | } else if (request->flags.sslBumped && !reply->persistent()) { |
49f1c7f7 AR |
1515 | // We do not really have to close, but we pretend we are a tunnel. |
1516 | debugs(88, 3, "clientBuildReplyHeader: bumped reply forces close"); | |
e857372a | 1517 | request->flags.proxyKeepalive = false; |
693cb033 CT |
1518 | } else if (request->pinnedConnection() && !reply->persistent()) { |
1519 | // The peer wants to close the pinned connection | |
1520 | debugs(88, 3, "pinned reply forces close"); | |
e857372a | 1521 | request->flags.proxyKeepalive = false; |
c5c06f02 CT |
1522 | } else if (http->getConn()) { |
1523 | ConnStateData * conn = http->getConn(); | |
1524 | if (!Comm::IsConnOpen(conn->port->listenConn)) { | |
1525 | // The listening port closed because of a reconfigure | |
1526 | debugs(88, 3, "listening port closed"); | |
1527 | request->flags.proxyKeepalive = false; | |
c5c06f02 | 1528 | } |
17b57873 | 1529 | } |
d67acb4e | 1530 | |
4ad60609 AR |
1531 | // Decide if we send chunked reply |
1532 | if (maySendChunkedReply && | |
450fe1cb | 1533 | request->flags.proxyKeepalive && |
4cb2536f | 1534 | reply->bodySize(request->method) < 0) { |
4ad60609 | 1535 | debugs(88, 3, "clientBuildReplyHeader: chunked reply"); |
e857372a | 1536 | request->flags.chunkedReply = true; |
4ad60609 AR |
1537 | hdr->putStr(HDR_TRANSFER_ENCODING, "chunked"); |
1538 | } | |
f529bb20 | 1539 | |
4dea3fdd | 1540 | /* Append VIA */ |
92caea77 | 1541 | if (Config.onoff.via) { |
62e76326 | 1542 | LOCAL_ARRAY(char, bbuf, MAX_URL + 32); |
30abd221 | 1543 | String strVia; |
26ac0430 | 1544 | hdr->getList(HDR_VIA, &strVia); |
88331887 | 1545 | snprintf(bbuf, MAX_URL + 32, "%d.%d %s", |
7dc5f514 | 1546 | reply->sline.version.major, |
1547 | reply->sline.version.minor, | |
62e76326 | 1548 | ThisCache); |
1549 | strListAdd(&strVia, bbuf, ','); | |
a9925b40 | 1550 | hdr->delById(HDR_VIA); |
5b4117d8 | 1551 | hdr->putStr(HDR_VIA, strVia.termedBuf()); |
c8be6d7b | 1552 | } |
95e78500 | 1553 | /* Signal keep-alive or close explicitly */ |
450fe1cb | 1554 | hdr->putStr(HDR_CONNECTION, request->flags.proxyKeepalive ? "keep-alive" : "close"); |
62e76326 | 1555 | |
edce4d98 | 1556 | #if ADD_X_REQUEST_URI |
1557 | /* | |
1558 | * Knowing the URI of the request is useful when debugging persistent | |
1559 | * connections in a client; we cannot guarantee the order of http headers, | |
1560 | * but X-Request-URI is likely to be the very last header to ease use from a | |
1561 | * debugger [hdr->entries.count-1]. | |
1562 | */ | |
a9925b40 | 1563 | hdr->putStr(HDR_X_REQUEST_URI, |
1564 | http->memOjbect()->url ? http->memObject()->url : http->uri); | |
62e76326 | 1565 | |
edce4d98 | 1566 | #endif |
62e76326 | 1567 | |
45cca89d AJ |
1568 | /* Surrogate-Control requires Surrogate-Capability from upstream to pass on */ |
1569 | if ( hdr->has(HDR_SURROGATE_CONTROL) ) { | |
1570 | if (!request->header.has(HDR_SURROGATE_CAPABILITY)) { | |
1571 | hdr->delById(HDR_SURROGATE_CONTROL); | |
1572 | } | |
1573 | /* TODO: else case: drop any controls intended specifically for our surrogate ID */ | |
1574 | } | |
1575 | ||
8c01ada0 | 1576 | httpHdrMangleList(hdr, request, ROR_REPLY); |
edce4d98 | 1577 | } |
1578 | ||
0655fa4d | 1579 | void |
b297bcd0 | 1580 | clientReplyContext::cloneReply() |
edce4d98 | 1581 | { |
7dc5f514 | 1582 | assert(reply == NULL); |
0655fa4d | 1583 | |
b248c2a3 AJ |
1584 | reply = http->storeEntry()->getReply()->clone(); |
1585 | HTTPMSGLOCK(reply); | |
7dc5f514 | 1586 | |
0c3d3f65 | 1587 | if (reply->sline.protocol == AnyP::PROTO_HTTP) { |
2592bc70 AJ |
1588 | /* RFC 2616 requires us to advertise our version (but only on real HTTP traffic) */ |
1589 | reply->sline.version = Http::ProtocolVersion(); | |
e77d7ef0 | 1590 | } |
0655fa4d | 1591 | |
1592 | /* do header conversions */ | |
1593 | buildReplyHeader(); | |
edce4d98 | 1594 | } |
1595 | ||
7681a3b9 AR |
1596 | /// Safely disposes of an entry pointing to a cache hit that we do not want. |
1597 | /// We cannot just ignore the entry because it may be locking or otherwise | |
1598 | /// holding an associated cache resource of some sort. | |
1599 | void | |
1600 | clientReplyContext::forgetHit() | |
1601 | { | |
1602 | StoreEntry *e = http->storeEntry(); | |
1603 | assert(e); // or we are not dealing with a hit | |
1604 | // We probably have not locked the entry earlier, unfortunately. We lock it | |
1605 | // now so that we can unlock two lines later (and trigger cleanup). | |
1606 | // Ideally, ClientHttpRequest::storeEntry() should lock/unlock, but it is | |
1607 | // used so inconsistently that simply adding locking there leads to bugs. | |
1bfe9ade | 1608 | e->lock("clientReplyContext::forgetHit"); |
7681a3b9 | 1609 | http->storeEntry(NULL); |
1bfe9ade | 1610 | e->unlock("clientReplyContext::forgetHit"); // may delete e |
7681a3b9 AR |
1611 | } |
1612 | ||
e6ccf245 | 1613 | void |
1614 | clientReplyContext::identifyStoreObject() | |
edce4d98 | 1615 | { |
190154cf | 1616 | HttpRequest *r = http->request; |
62e76326 | 1617 | |
45e5102d | 1618 | if (r->flags.cachable || r->flags.internal) { |
62e76326 | 1619 | lookingforstore = 5; |
1620 | StoreEntry::getPublicByRequest (this, r); | |
559da936 | 1621 | } else { |
62e76326 | 1622 | identifyFoundObject (NullStoreEntry::getInstance()); |
559da936 | 1623 | } |
e6ccf245 | 1624 | } |
1625 | ||
7d5f62a4 AJ |
1626 | /** |
1627 | * Check state of the current StoreEntry object. | |
1628 | * to see if we can determine the final status of the request. | |
1629 | */ | |
e6ccf245 | 1630 | void |
1631 | clientReplyContext::identifyFoundObject(StoreEntry *newEntry) | |
1632 | { | |
1633 | StoreEntry *e = newEntry; | |
190154cf | 1634 | HttpRequest *r = http->request; |
62e76326 | 1635 | |
d85b8894 | 1636 | /** \li If the entry received isNull() then we ignore it. */ |
e6ccf245 | 1637 | if (e->isNull()) { |
86a2f789 | 1638 | http->storeEntry(NULL); |
e6ccf245 | 1639 | } else { |
86a2f789 | 1640 | http->storeEntry(e); |
e6ccf245 | 1641 | } |
62e76326 | 1642 | |
86a2f789 | 1643 | e = http->storeEntry(); |
a12a049a | 1644 | |
7d5f62a4 | 1645 | /* Release IP-cache entries on reload */ |
d85b8894 | 1646 | /** \li If the request has no-cache flag set or some no_cache HACK in operation we |
7d5f62a4 AJ |
1647 | * 'invalidate' the cached IP entries for this request ??? |
1648 | */ | |
17852883 | 1649 | if (r->flags.noCache || r->flags.noCacheHack()) |
5c51bffb | 1650 | ipcacheInvalidateNegative(r->url.host()); |
45e5102d | 1651 | |
edce4d98 | 1652 | #if USE_CACHE_DIGESTS |
86a2f789 | 1653 | lookup_type = http->storeEntry() ? "HIT" : "MISS"; |
edce4d98 | 1654 | #endif |
62e76326 | 1655 | |
86a2f789 | 1656 | if (NULL == http->storeEntry()) { |
d85b8894 | 1657 | /** \li If no StoreEntry object is current assume this object isn't in the cache set MISS*/ |
e4d13993 | 1658 | debugs(85, 3, "StoreEntry is NULL - MISS"); |
62e76326 | 1659 | http->logType = LOG_TCP_MISS; |
1660 | doGetMoreData(); | |
1661 | return; | |
edce4d98 | 1662 | } |
62e76326 | 1663 | |
edce4d98 | 1664 | if (Config.onoff.offline) { |
d85b8894 | 1665 | /** \li If we are running in offline mode set to HIT */ |
e4d13993 | 1666 | debugs(85, 3, "offline HIT " << *e); |
62e76326 | 1667 | http->logType = LOG_TCP_HIT; |
1668 | doGetMoreData(); | |
1669 | return; | |
edce4d98 | 1670 | } |
62e76326 | 1671 | |
edce4d98 | 1672 | if (http->redirect.status) { |
d85b8894 | 1673 | /** \li If redirection status is True force this to be a MISS */ |
539283df | 1674 | debugs(85, 3, "REDIRECT status forced StoreEntry to NULL (no body on 3XX responses) " << *e); |
7681a3b9 | 1675 | forgetHit(); |
16cd3193 | 1676 | http->logType = LOG_TCP_REDIRECT; |
62e76326 | 1677 | doGetMoreData(); |
1678 | return; | |
edce4d98 | 1679 | } |
62e76326 | 1680 | |
3900307b | 1681 | if (!e->validToSend()) { |
e4d13993 | 1682 | debugs(85, 3, "!storeEntryValidToSend MISS " << *e); |
7681a3b9 | 1683 | forgetHit(); |
62e76326 | 1684 | http->logType = LOG_TCP_MISS; |
1685 | doGetMoreData(); | |
1686 | return; | |
edce4d98 | 1687 | } |
62e76326 | 1688 | |
edce4d98 | 1689 | if (EBIT_TEST(e->flags, ENTRY_SPECIAL)) { |
d85b8894 | 1690 | /* \li Special entries are always hits, no matter what the client says */ |
e4d13993 | 1691 | debugs(85, 3, "ENTRY_SPECIAL HIT " << *e); |
62e76326 | 1692 | http->logType = LOG_TCP_HIT; |
1693 | doGetMoreData(); | |
1694 | return; | |
edce4d98 | 1695 | } |
62e76326 | 1696 | |
450fe1cb | 1697 | if (r->flags.noCache) { |
e4d13993 | 1698 | debugs(85, 3, "no-cache REFRESH MISS " << *e); |
7681a3b9 | 1699 | forgetHit(); |
62e76326 | 1700 | http->logType = LOG_TCP_CLIENT_REFRESH_MISS; |
1701 | doGetMoreData(); | |
1702 | return; | |
edce4d98 | 1703 | } |
62e76326 | 1704 | |
e4d13993 | 1705 | debugs(85, 3, "default HIT " << *e); |
e6ccf245 | 1706 | http->logType = LOG_TCP_HIT; |
1707 | doGetMoreData(); | |
edce4d98 | 1708 | } |
1709 | ||
d85b8894 AJ |
1710 | /** |
1711 | * Request more data from the store for the client Stream | |
edce4d98 | 1712 | * This is *the* entry point to this module. |
1713 | * | |
1714 | * Preconditions: | |
d85b8894 AJ |
1715 | * - This is the head of the list. |
1716 | * - There is at least one more node. | |
1717 | * - Data context is not null | |
edce4d98 | 1718 | */ |
1719 | void | |
59a1efb2 | 1720 | clientGetMoreData(clientStreamNode * aNode, ClientHttpRequest * http) |
edce4d98 | 1721 | { |
edce4d98 | 1722 | /* Test preconditions */ |
e6ccf245 | 1723 | assert(aNode != NULL); |
1724 | assert(cbdataReferenceValid(aNode)); | |
e6ccf245 | 1725 | assert(aNode->node.prev == NULL); |
1726 | assert(aNode->node.next != NULL); | |
0655fa4d | 1727 | clientReplyContext *context = dynamic_cast<clientReplyContext *>(aNode->data.getRaw()); |
1728 | assert (context); | |
edce4d98 | 1729 | assert(context->http == http); |
1730 | ||
0655fa4d | 1731 | clientStreamNode *next = ( clientStreamNode *)aNode->node.next->data; |
62e76326 | 1732 | |
edce4d98 | 1733 | if (!context->ourNode) |
62e76326 | 1734 | context->ourNode = aNode; |
1735 | ||
e6ccf245 | 1736 | /* no cbdatareference, this is only used once, and safely */ |
edce4d98 | 1737 | if (context->flags.storelogiccomplete) { |
62e76326 | 1738 | StoreIOBuffer tempBuffer; |
1739 | tempBuffer.offset = next->readBuffer.offset + context->headers_sz; | |
1740 | tempBuffer.length = next->readBuffer.length; | |
1741 | tempBuffer.data = next->readBuffer.data; | |
1742 | ||
86a2f789 | 1743 | storeClientCopy(context->sc, http->storeEntry(), |
0655fa4d | 1744 | tempBuffer, clientReplyContext::SendMoreData, context); |
62e76326 | 1745 | return; |
edce4d98 | 1746 | } |
62e76326 | 1747 | |
c2a7cefd | 1748 | if (context->http->request->method == Http::METHOD_PURGE) { |
62e76326 | 1749 | context->purgeRequest(); |
1750 | return; | |
edce4d98 | 1751 | } |
62e76326 | 1752 | |
e18b8316 | 1753 | // OPTIONS with Max-Forwards:0 handled in clientProcessRequest() |
fc90edc3 | 1754 | |
c2a7cefd | 1755 | if (context->http->request->method == Http::METHOD_TRACE) { |
34ee6e73 | 1756 | if (context->http->request->header.getInt64(HDR_MAX_FORWARDS) == 0) { |
0655fa4d | 1757 | context->traceReply(aNode); |
62e76326 | 1758 | return; |
1759 | } | |
1760 | ||
1761 | /* continue forwarding, not finished yet. */ | |
1762 | http->logType = LOG_TCP_MISS; | |
1763 | ||
1764 | context->doGetMoreData(); | |
edce4d98 | 1765 | } else |
62e76326 | 1766 | context->identifyStoreObject(); |
e6ccf245 | 1767 | } |
1768 | ||
1769 | void | |
1770 | clientReplyContext::doGetMoreData() | |
1771 | { | |
edce4d98 | 1772 | /* We still have to do store logic processing - vary, cache hit etc */ |
86a2f789 | 1773 | if (http->storeEntry() != NULL) { |
62e76326 | 1774 | /* someone found the object in the cache for us */ |
8bcf08e0 | 1775 | StoreIOBuffer localTempBuffer; |
34266cde | 1776 | |
1bfe9ade | 1777 | http->storeEntry()->lock("clientReplyContext::doGetMoreData"); |
62e76326 | 1778 | |
c877c0bc AR |
1779 | MemObject *mem_obj = http->storeEntry()->makeMemObject(); |
1780 | if (!mem_obj->hasUris()) { | |
62e76326 | 1781 | /* |
1782 | * This if-block exists because we don't want to clobber | |
1783 | * a preexiting mem_obj->method value if the mem_obj | |
1784 | * already exists. For example, when a HEAD request | |
1785 | * is a cache hit for a GET response, we want to keep | |
1786 | * the method as GET. | |
1787 | */ | |
c877c0bc | 1788 | mem_obj->setUris(storeId(), http->log_uri, http->request->method); |
a8a0b1c2 EC |
1789 | /** |
1790 | * Here we can see if the object was | |
1791 | * created using URL or alternative StoreID from helper. | |
1792 | */ | |
c877c0bc | 1793 | debugs(88, 3, "storeId: " << http->storeEntry()->mem_obj->storeId()); |
62e76326 | 1794 | } |
1795 | ||
86a2f789 | 1796 | sc = storeClientListAdd(http->storeEntry(), this); |
9a0a18de | 1797 | #if USE_DELAY_POOLS |
62e76326 | 1798 | sc->setDelayId(DelayId::DelayClient(http)); |
edce4d98 | 1799 | #endif |
62e76326 | 1800 | |
91369933 | 1801 | assert(http->logType.oldType == LOG_TCP_HIT); |
62e76326 | 1802 | reqofs = 0; |
1803 | /* guarantee nothing has been sent yet! */ | |
1804 | assert(http->out.size == 0); | |
1805 | assert(http->out.offset == 0); | |
425de4c8 AJ |
1806 | |
1807 | if (Ip::Qos::TheConfig.isHitTosActive()) { | |
73c36fd9 | 1808 | Ip::Qos::doTosLocalHit(http->getConn()->clientConnection); |
425de4c8 AJ |
1809 | } |
1810 | ||
1811 | if (Ip::Qos::TheConfig.isHitNfmarkActive()) { | |
73c36fd9 | 1812 | Ip::Qos::doNfmarkLocalHit(http->getConn()->clientConnection); |
b86ab75b | 1813 | } |
425de4c8 | 1814 | |
8bcf08e0 FC |
1815 | localTempBuffer.offset = reqofs; |
1816 | localTempBuffer.length = getNextNode()->readBuffer.length; | |
1817 | localTempBuffer.data = getNextNode()->readBuffer.data; | |
1818 | storeClientCopy(sc, http->storeEntry(), localTempBuffer, CacheHit, this); | |
edce4d98 | 1819 | } else { |
62e76326 | 1820 | /* MISS CASE, http->logType is already set! */ |
0655fa4d | 1821 | processMiss(); |
edce4d98 | 1822 | } |
1823 | } | |
1824 | ||
d85b8894 | 1825 | /** The next node has removed itself from the stream. */ |
edce4d98 | 1826 | void |
59a1efb2 | 1827 | clientReplyDetach(clientStreamNode * node, ClientHttpRequest * http) |
edce4d98 | 1828 | { |
d85b8894 | 1829 | /** detach from the stream */ |
edce4d98 | 1830 | clientStreamDetach(node, http); |
1831 | } | |
1832 | ||
d85b8894 AJ |
1833 | /** |
1834 | * Accepts chunk of a http message in buf, parses prefix, filters headers and | |
edce4d98 | 1835 | * such, writes processed message to the message recipient |
1836 | */ | |
1837 | void | |
0655fa4d | 1838 | clientReplyContext::SendMoreData(void *data, StoreIOBuffer result) |
edce4d98 | 1839 | { |
e6ccf245 | 1840 | clientReplyContext *context = static_cast<clientReplyContext *>(data); |
528b2c61 | 1841 | context->sendMoreData (result); |
1842 | } | |
1843 | ||
1844 | void | |
1845 | clientReplyContext::makeThisHead() | |
1846 | { | |
1847 | /* At least, I think thats what this does */ | |
1848 | dlinkDelete(&http->active, &ClientActiveRequests); | |
1849 | dlinkAdd(http, &http->active, &ClientActiveRequests); | |
1850 | } | |
1851 | ||
1852 | bool | |
1853 | clientReplyContext::errorInStream(StoreIOBuffer const &result, size_t const &sizeToProcess)const | |
1854 | { | |
1855 | return /* aborted request */ | |
86a2f789 | 1856 | (http->storeEntry() && EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) || |
62e76326 | 1857 | /* Upstream read error */ (result.flags.error) || |
1858 | /* Upstream EOF */ (sizeToProcess == 0); | |
528b2c61 | 1859 | } |
1860 | ||
1861 | void | |
1862 | clientReplyContext::sendStreamError(StoreIOBuffer const &result) | |
1863 | { | |
d85b8894 | 1864 | /** call clientWriteComplete so the client socket gets closed |
af6a12ee | 1865 | * |
d85b8894 | 1866 | * We call into the stream, because we don't know that there is a |
528b2c61 | 1867 | * client socket! |
1868 | */ | |
26ac0430 | 1869 | debugs(88, 5, "clientReplyContext::sendStreamError: A stream error has occured, marking as complete and sending no data."); |
8bcf08e0 | 1870 | StoreIOBuffer localTempBuffer; |
528b2c61 | 1871 | flags.complete = 1; |
e857372a | 1872 | http->request->flags.streamError = true; |
8bcf08e0 | 1873 | localTempBuffer.flags.error = result.flags.error; |
528b2c61 | 1874 | clientStreamCallback((clientStreamNode*)http->client_stream.head->data, http, NULL, |
8bcf08e0 | 1875 | localTempBuffer); |
528b2c61 | 1876 | } |
1877 | ||
1878 | void | |
1879 | clientReplyContext::pushStreamData(StoreIOBuffer const &result, char *source) | |
1880 | { | |
8bcf08e0 | 1881 | StoreIOBuffer localTempBuffer; |
62e76326 | 1882 | |
528b2c61 | 1883 | if (result.length == 0) { |
bf8fe701 | 1884 | debugs(88, 5, "clientReplyContext::pushStreamData: marking request as complete due to 0 length store result"); |
62e76326 | 1885 | flags.complete = 1; |
528b2c61 | 1886 | } |
62e76326 | 1887 | |
43ae1d95 | 1888 | assert(result.offset - headers_sz == next()->readBuffer.offset); |
8bcf08e0 FC |
1889 | localTempBuffer.offset = result.offset - headers_sz; |
1890 | localTempBuffer.length = result.length; | |
62e76326 | 1891 | |
8bcf08e0 FC |
1892 | if (localTempBuffer.length) |
1893 | localTempBuffer.data = source; | |
62e76326 | 1894 | |
528b2c61 | 1895 | clientStreamCallback((clientStreamNode*)http->client_stream.head->data, http, NULL, |
8bcf08e0 | 1896 | localTempBuffer); |
528b2c61 | 1897 | } |
1898 | ||
1899 | clientStreamNode * | |
1900 | clientReplyContext::next() const | |
1901 | { | |
1902 | assert ( (clientStreamNode*)http->client_stream.head->next->data == getNextNode()); | |
1903 | return getNextNode(); | |
1904 | } | |
1905 | ||
b51aec66 | 1906 | void |
16611143 | 1907 | clientReplyContext::sendBodyTooLargeError() |
b51aec66 | 1908 | { |
b7ac5457 | 1909 | Ip::Address tmp_noaddr; |
4dd643d5 | 1910 | tmp_noaddr.setNoAddr(); // TODO: make a global const |
af0d9bca | 1911 | http->logType = LOG_TCP_DENIED_REPLY; |
955394ce | 1912 | ErrorState *err = clientBuildError(ERR_TOO_BIG, Http::scForbidden, NULL, |
73c36fd9 | 1913 | http->getConn() != NULL ? http->getConn()->clientConnection->remote : tmp_noaddr, |
26ac0430 | 1914 | http->request); |
16611143 | 1915 | removeClientStoreReference(&(sc), http); |
1916 | HTTPMSGUNLOCK(reply); | |
1917 | startError(err); | |
26ac0430 | 1918 | |
b51aec66 | 1919 | } |
1920 | ||
79c8035e AR |
1921 | /// send 412 (Precondition Failed) to client |
1922 | void | |
1923 | clientReplyContext::sendPreconditionFailedError() | |
1924 | { | |
1925 | http->logType = LOG_TCP_HIT; | |
1926 | ErrorState *const err = | |
955394ce | 1927 | clientBuildError(ERR_PRECONDITION_FAILED, Http::scPreconditionFailed, |
73c36fd9 | 1928 | NULL, http->getConn()->clientConnection->remote, http->request); |
79c8035e AR |
1929 | removeClientStoreReference(&sc, http); |
1930 | HTTPMSGUNLOCK(reply); | |
1931 | startError(err); | |
1932 | } | |
1933 | ||
a2bd457d AJ |
1934 | /// send 304 (Not Modified) to client |
1935 | void | |
1936 | clientReplyContext::sendNotModified() | |
1937 | { | |
1938 | StoreEntry *e = http->storeEntry(); | |
1939 | const time_t timestamp = e->timestamp; | |
1940 | HttpReply *const temprep = e->getReply()->make304(); | |
1941 | http->logType = LOG_TCP_IMS_HIT; | |
1942 | removeClientStoreReference(&sc, http); | |
f206b652 | 1943 | createStoreEntry(http->request->method, RequestFlags()); |
a2bd457d AJ |
1944 | e = http->storeEntry(); |
1945 | // Copy timestamp from the original entry so the 304 | |
1946 | // reply has a meaningful Age: header. | |
90fa5816 | 1947 | e->timestampsSet(); |
a2bd457d AJ |
1948 | e->timestamp = timestamp; |
1949 | e->replaceHttpReply(temprep); | |
1950 | e->complete(); | |
1951 | /* | |
1952 | * TODO: why put this in the store and then serialise it and | |
1953 | * then parse it again. Simply mark the request complete in | |
1954 | * our context and write the reply struct to the client side. | |
1955 | */ | |
1956 | triggerInitialStoreRead(); | |
1957 | } | |
1958 | ||
1959 | /// send 304 (Not Modified) or 412 (Precondition Failed) to client | |
1960 | /// depending on request method | |
1961 | void | |
1962 | clientReplyContext::sendNotModifiedOrPreconditionFailedError() | |
1963 | { | |
c2a7cefd AJ |
1964 | if (http->request->method == Http::METHOD_GET || |
1965 | http->request->method == Http::METHOD_HEAD) | |
a2bd457d AJ |
1966 | sendNotModified(); |
1967 | else | |
1968 | sendPreconditionFailedError(); | |
1969 | } | |
1970 | ||
4993f571 | 1971 | void |
1972 | clientReplyContext::processReplyAccess () | |
1973 | { | |
b50e327b | 1974 | /* NP: this should probably soft-fail to a zero-sized-reply error ?? */ |
7dc5f514 | 1975 | assert(reply); |
b50e327b AJ |
1976 | |
1977 | /** Don't block our own responses or HTTP status messages */ | |
91369933 AJ |
1978 | if (http->logType.oldType == LOG_TCP_DENIED || |
1979 | http->logType.oldType == LOG_TCP_DENIED_REPLY || | |
9b769c67 | 1980 | alwaysAllowResponse(reply->sline.status())) { |
acbf9428 | 1981 | headers_sz = reply->hdr_sz; |
2efeb0b7 | 1982 | processReplyAccessResult(ACCESS_ALLOWED); |
26ac0430 | 1983 | return; |
230a8cc6 | 1984 | } |
26ac0430 | 1985 | |
b50e327b | 1986 | /** Check for reply to big error */ |
16611143 | 1987 | if (reply->expectedBodyTooLarge(*http->request)) { |
1988 | sendBodyTooLargeError(); | |
62e76326 | 1989 | return; |
1990 | } | |
1991 | ||
7dc5f514 | 1992 | headers_sz = reply->hdr_sz; |
230a8cc6 | 1993 | |
b50e327b | 1994 | /** check for absent access controls (permit by default) */ |
230a8cc6 | 1995 | if (!Config.accessList.reply) { |
2efeb0b7 | 1996 | processReplyAccessResult(ACCESS_ALLOWED); |
26ac0430 | 1997 | return; |
230a8cc6 | 1998 | } |
1999 | ||
b50e327b | 2000 | /** Process http_reply_access lists */ |
127dce76 AR |
2001 | ACLFilledChecklist *replyChecklist = |
2002 | clientAclChecklistCreate(Config.accessList.reply, http); | |
b248c2a3 AJ |
2003 | replyChecklist->reply = reply; |
2004 | HTTPMSGLOCK(replyChecklist->reply); | |
0655fa4d | 2005 | replyChecklist->nonBlockingCheck(ProcessReplyAccessResult, this); |
4993f571 | 2006 | } |
2007 | ||
2008 | void | |
2efeb0b7 | 2009 | clientReplyContext::ProcessReplyAccessResult(allow_t rv, void *voidMe) |
4993f571 | 2010 | { |
2011 | clientReplyContext *me = static_cast<clientReplyContext *>(voidMe); | |
0655fa4d | 2012 | me->processReplyAccessResult(rv); |
4993f571 | 2013 | } |
2014 | ||
2015 | void | |
2efeb0b7 | 2016 | clientReplyContext::processReplyAccessResult(const allow_t &accessAllowed) |
4993f571 | 2017 | { |
7f06a3d8 AJ |
2018 | debugs(88, 2, "The reply for " << http->request->method |
2019 | << ' ' << http->uri << " is " << accessAllowed << ", because it matched " | |
2020 | << (AclMatchedName ? AclMatchedName : "NO ACL's")); | |
62e76326 | 2021 | |
2efeb0b7 | 2022 | if (accessAllowed != ACCESS_ALLOWED) { |
62e76326 | 2023 | ErrorState *err; |
0185bd6f | 2024 | err_type page_id; |
9ce7856a | 2025 | page_id = aclGetDenyInfoPage(&Config.denyInfoList, AclMatchedName, 1); |
0185bd6f | 2026 | |
c466369c | 2027 | http->logType = LOG_TCP_DENIED_REPLY; |
2028 | ||
0185bd6f | 2029 | if (page_id == ERR_NONE) |
2030 | page_id = ERR_ACCESS_DENIED; | |
2031 | ||
b7ac5457 | 2032 | Ip::Address tmp_noaddr; |
4dd643d5 | 2033 | tmp_noaddr.setNoAddr(); |
955394ce | 2034 | err = clientBuildError(page_id, Http::scForbidden, NULL, |
73c36fd9 | 2035 | http->getConn() != NULL ? http->getConn()->clientConnection->remote : tmp_noaddr, |
26ac0430 | 2036 | http->request); |
0185bd6f | 2037 | |
86a2f789 | 2038 | removeClientStoreReference(&sc, http); |
0185bd6f | 2039 | |
7dc5f514 | 2040 | HTTPMSGUNLOCK(reply); |
0185bd6f | 2041 | |
3c2c1d31 | 2042 | startError(err); |
2043 | ||
62e76326 | 2044 | return; |
2045 | } | |
2046 | ||
0976f8db | 2047 | /* Ok, the reply is allowed, */ |
2048 | http->loggingEntry(http->storeEntry()); | |
2049 | ||
7dc5f514 | 2050 | ssize_t body_size = reqofs - reply->hdr_sz; |
b297bcd0 | 2051 | if (body_size < 0) { |
26ac0430 AJ |
2052 | reqofs = reply->hdr_sz; |
2053 | body_size = 0; | |
b297bcd0 | 2054 | } |
0976f8db | 2055 | |
bf8fe701 | 2056 | debugs(88, 3, "clientReplyContext::sendMoreData: Appending " << |
2057 | (int) body_size << " bytes after " << reply->hdr_sz << | |
2058 | " bytes of headers"); | |
0976f8db | 2059 | |
f41735ea | 2060 | #if USE_SQUID_ESI |
62e76326 | 2061 | |
9b769c67 AJ |
2062 | if (http->flags.accel && reply->sline.status() != Http::scForbidden && |
2063 | !alwaysAllowResponse(reply->sline.status()) && | |
7dc5f514 | 2064 | esiEnableProcessing(reply)) { |
bf8fe701 | 2065 | debugs(88, 2, "Enabling ESI processing for " << http->uri); |
43ae1d95 | 2066 | clientStreamInsertHead(&http->client_stream, esiStreamRead, |
2067 | esiProcessStream, esiStreamDetach, esiStreamStatus, NULL); | |
2068 | } | |
2069 | ||
5ef38a13 | 2070 | #endif |
2071 | ||
c2a7cefd | 2072 | if (http->request->method == Http::METHOD_HEAD) { |
62e76326 | 2073 | /* do not forward body for HEAD replies */ |
2074 | body_size = 0; | |
be4d35dc | 2075 | http->flags.done_copying = true; |
62e76326 | 2076 | flags.complete = 1; |
2077 | } | |
2078 | ||
2079 | assert (!flags.headersSent); | |
2080 | flags.headersSent = true; | |
2081 | ||
8bcf08e0 | 2082 | StoreIOBuffer localTempBuffer; |
62e76326 | 2083 | char *buf = next()->readBuffer.data; |
e85eb4e1 | 2084 | char *body_buf = buf + reply->hdr_sz; |
62e76326 | 2085 | |
49ea0125 | 2086 | //Server side may disable ranges under some circumstances. |
2087 | ||
2088 | if ((!http->request->range)) | |
2089 | next()->readBuffer.offset = 0; | |
2090 | ||
e85eb4e1 AJ |
2091 | body_buf -= next()->readBuffer.offset; |
2092 | ||
62e76326 | 2093 | if (next()->readBuffer.offset != 0) { |
2094 | if (next()->readBuffer.offset > body_size) { | |
2324cda2 | 2095 | /* Can't use any of the body we received. send nothing */ |
8bcf08e0 FC |
2096 | localTempBuffer.length = 0; |
2097 | localTempBuffer.data = NULL; | |
62e76326 | 2098 | } else { |
8bcf08e0 FC |
2099 | localTempBuffer.length = body_size - next()->readBuffer.offset; |
2100 | localTempBuffer.data = body_buf + next()->readBuffer.offset; | |
62e76326 | 2101 | } |
2102 | } else { | |
8bcf08e0 FC |
2103 | localTempBuffer.length = body_size; |
2104 | localTempBuffer.data = body_buf; | |
62e76326 | 2105 | } |
2106 | ||
0655fa4d | 2107 | /* TODO??: move the data in the buffer back by the request header size */ |
62e76326 | 2108 | clientStreamCallback((clientStreamNode *)http->client_stream.head->data, |
8bcf08e0 | 2109 | http, reply, localTempBuffer); |
62e76326 | 2110 | |
2111 | return; | |
4993f571 | 2112 | } |
2113 | ||
528b2c61 | 2114 | void |
2115 | clientReplyContext::sendMoreData (StoreIOBuffer result) | |
2116 | { | |
50c09fc4 | 2117 | if (deleting) |
2118 | return; | |
2119 | ||
86a2f789 | 2120 | StoreEntry *entry = http->storeEntry(); |
50c09fc4 | 2121 | |
1cf238db | 2122 | ConnStateData * conn = http->getConn(); |
50c09fc4 | 2123 | |
ea25a575 TH |
2124 | // too late, our conn is closing |
2125 | // TODO: should we also quit? | |
2126 | if (conn == NULL) { | |
2127 | debugs(33,3, "not sending more data to a closed connection" ); | |
2128 | return; | |
2129 | } | |
2130 | if (!conn->isOpen()) { | |
2131 | debugs(33,3, "not sending more data to closing connection " << conn->clientConnection); | |
9af2f95b AR |
2132 | return; |
2133 | } | |
693cb033 CT |
2134 | if (conn->pinning.zeroReply) { |
2135 | debugs(33,3, "not sending more data after a pinned zero reply " << conn->clientConnection); | |
9af2f95b AR |
2136 | return; |
2137 | } | |
50c09fc4 | 2138 | |
528b2c61 | 2139 | char *buf = next()->readBuffer.data; |
50c09fc4 | 2140 | |
da33c835 | 2141 | if (buf != result.data) { |
62e76326 | 2142 | /* we've got to copy some data */ |
2143 | assert(result.length <= next()->readBuffer.length); | |
41d00cd3 | 2144 | memcpy(buf, result.data, result.length); |
edce4d98 | 2145 | } |
62e76326 | 2146 | |
91369933 | 2147 | if (reqofs==0 && !http->logType.isTcpHit() && Comm::IsConnOpen(conn->clientConnection)) { |
425de4c8 | 2148 | if (Ip::Qos::TheConfig.isHitTosActive()) { |
73c36fd9 | 2149 | Ip::Qos::doTosLocalMiss(conn->clientConnection, http->request->hier.code); |
425de4c8 AJ |
2150 | } |
2151 | if (Ip::Qos::TheConfig.isHitNfmarkActive()) { | |
73c36fd9 | 2152 | Ip::Qos::doNfmarkLocalMiss(conn->clientConnection, http->request->hier.code); |
452bb8e2 | 2153 | } |
7172612f | 2154 | } |
7172612f | 2155 | |
ab9c533b HN |
2156 | /* We've got the final data to start pushing... */ |
2157 | flags.storelogiccomplete = 1; | |
2158 | ||
4993f571 | 2159 | reqofs += result.length; |
2160 | ||
2161 | assert(reqofs <= HTTP_REQBUF_SZ || flags.headersSent); | |
62e76326 | 2162 | |
edce4d98 | 2163 | assert(http->request != NULL); |
62e76326 | 2164 | |
edce4d98 | 2165 | /* ESI TODO: remove this assert once everything is stable */ |
2166 | assert(http->client_stream.head->data | |
62e76326 | 2167 | && cbdataReferenceValid(http->client_stream.head->data)); |
528b2c61 | 2168 | |
2169 | makeThisHead(); | |
62e76326 | 2170 | |
bf8fe701 | 2171 | debugs(88, 5, "clientReplyContext::sendMoreData: " << http->uri << ", " << |
47f6e231 | 2172 | reqofs << " bytes (" << result.length << |
bf8fe701 | 2173 | " new bytes)"); |
47f6e231 | 2174 | debugs(88, 5, "clientReplyContext::sendMoreData:" |
73c36fd9 | 2175 | << conn->clientConnection << |
26ac0430 AJ |
2176 | " '" << entry->url() << "'" << |
2177 | " out.offset=" << http->out.offset); | |
528b2c61 | 2178 | |
edce4d98 | 2179 | /* update size of the request */ |
4993f571 | 2180 | reqsize = reqofs; |
62e76326 | 2181 | |
4993f571 | 2182 | if (errorInStream(result, reqofs)) { |
62e76326 | 2183 | sendStreamError(result); |
2184 | return; | |
edce4d98 | 2185 | } |
528b2c61 | 2186 | |
2187 | if (flags.headersSent) { | |
62e76326 | 2188 | pushStreamData (result, buf); |
2189 | return; | |
edce4d98 | 2190 | } |
62e76326 | 2191 | |
b297bcd0 | 2192 | cloneReply(); |
21b92762 | 2193 | |
b297bcd0 | 2194 | /* handle headers */ |
21b92762 | 2195 | |
b297bcd0 | 2196 | if (Config.onoff.log_mime_hdrs) { |
26ac0430 | 2197 | size_t k; |
43ae1d95 | 2198 | |
26ac0430 | 2199 | if ((k = headersEnd(buf, reqofs))) { |
41ebd397 CT |
2200 | safe_free(http->al->headers.reply); |
2201 | http->al->headers.reply = (char *)xcalloc(k + 1, 1); | |
2202 | xstrncpy(http->al->headers.reply, buf, k); | |
26ac0430 | 2203 | } |
edce4d98 | 2204 | } |
b297bcd0 HN |
2205 | |
2206 | holdingBuffer = result; | |
2207 | processReplyAccess(); | |
2208 | return; | |
edce4d98 | 2209 | } |
2210 | ||
edce4d98 | 2211 | /* Using this breaks the client layering just a little! |
2212 | */ | |
0655fa4d | 2213 | void |
f206b652 | 2214 | clientReplyContext::createStoreEntry(const HttpRequestMethod& m, RequestFlags reqFlags) |
edce4d98 | 2215 | { |
0655fa4d | 2216 | assert(http != NULL); |
edce4d98 | 2217 | /* |
2218 | * For erroneous requests, we might not have a h->request, | |
2219 | * so make a fake one. | |
2220 | */ | |
62e76326 | 2221 | |
b248c2a3 AJ |
2222 | if (http->request == NULL) { |
2223 | http->request = new HttpRequest(m, AnyP::PROTO_NONE, null_string); | |
2224 | HTTPMSGLOCK(http->request); | |
2225 | } | |
62e76326 | 2226 | |
a8a0b1c2 | 2227 | StoreEntry *e = storeCreateEntry(storeId(), http->log_uri, reqFlags, m); |
62e76326 | 2228 | |
e4d13993 AR |
2229 | // Make entry collapsable ASAP, to increase collapsing chances for others, |
2230 | // TODO: every must-revalidate and similar request MUST reach the origin, | |
2231 | // but do we have to prohibit others from collapsing on that request? | |
9a9954ba | 2232 | if (Config.onoff.collapsed_forwarding && reqFlags.cachable && |
9d4e9cfb AR |
2233 | !reqFlags.needValidation && |
2234 | (m == Http::METHOD_GET || m == Http::METHOD_HEAD)) { | |
9a9954ba AR |
2235 | // make the entry available for future requests now |
2236 | Store::Root().allowCollapsing(e, reqFlags, m); | |
2237 | } | |
2238 | ||
0655fa4d | 2239 | sc = storeClientListAdd(e, this); |
62e76326 | 2240 | |
9a0a18de | 2241 | #if USE_DELAY_POOLS |
0655fa4d | 2242 | sc->setDelayId(DelayId::DelayClient(http)); |
edce4d98 | 2243 | #endif |
62e76326 | 2244 | |
0655fa4d | 2245 | reqofs = 0; |
62e76326 | 2246 | |
0655fa4d | 2247 | reqsize = 0; |
62e76326 | 2248 | |
edce4d98 | 2249 | /* I don't think this is actually needed! -- adrian */ |
0655fa4d | 2250 | /* http->reqbuf = http->norm_reqbuf; */ |
2251 | // assert(http->reqbuf == http->norm_reqbuf); | |
edce4d98 | 2252 | /* The next line is illegal because we don't know if the client stream |
26ac0430 | 2253 | * buffers have been set up |
edce4d98 | 2254 | */ |
0655fa4d | 2255 | // storeClientCopy(http->sc, e, 0, HTTP_REQBUF_SZ, http->reqbuf, |
2256 | // SendMoreData, this); | |
edce4d98 | 2257 | /* So, we mark the store logic as complete */ |
8bcf08e0 | 2258 | flags.storelogiccomplete = 1; |
62e76326 | 2259 | |
edce4d98 | 2260 | /* and get the caller to request a read, from whereever they are */ |
62e76326 | 2261 | /* NOTE: after ANY data flows down the pipe, even one step, |
26ac0430 | 2262 | * this function CAN NOT be used to manage errors |
edce4d98 | 2263 | */ |
86a2f789 | 2264 | http->storeEntry(e); |
edce4d98 | 2265 | } |
2266 | ||
2267 | ErrorState * | |
955394ce | 2268 | clientBuildError(err_type page_id, Http::StatusCode status, char const *url, |
b7ac5457 | 2269 | Ip::Address &src_addr, HttpRequest * request) |
edce4d98 | 2270 | { |
913524f0 | 2271 | ErrorState *err = new ErrorState(page_id, status, request); |
cc192b50 | 2272 | err->src_addr = src_addr; |
62e76326 | 2273 | |
edce4d98 | 2274 | if (url) |
62e76326 | 2275 | err->url = xstrdup(url); |
2276 | ||
edce4d98 | 2277 | return err; |
2278 | } | |
f53969cc | 2279 |