]>
Commit | Line | Data |
---|---|---|
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 | ||
59a1efb2 | 76 | clientReplyContext::clientReplyContext(ClientHttpRequest *clientContext) : http (cbdataReference(clientContext)), old_entry (NULL), old_sc(NULL), deleting(false) |
0655fa4d | 77 | {} |
edce4d98 | 78 | |
a5c8d64d AJ |
79 | /** Create an error in the store awaiting the client side to read it. |
80 | * | |
81 | * This may be better placed in the clientStream logic, but it has not been | |
0655fa4d | 82 | * relocated there yet |
83 | */ | |
edce4d98 | 84 | void |
0655fa4d | 85 | clientReplyContext::setReplyToError( |
955394ce | 86 | err_type err, Http::StatusCode status, const HttpRequestMethod& method, char const *uri, |
b7ac5457 | 87 | Ip::Address &addr, HttpRequest * failedrequest, const char *unparsedrequest, |
2f1431ea | 88 | #if USE_AUTH |
c7baff40 | 89 | Auth::UserRequest::Pointer auth_user_request |
2f1431ea | 90 | #else |
9d2b8284 | 91 | void* |
2f1431ea | 92 | #endif |
74174c03 | 93 | ) |
edce4d98 | 94 | { |
a33a428a | 95 | ErrorState *errstate = clientBuildError(err, status, uri, addr, failedrequest); |
62e76326 | 96 | |
edce4d98 | 97 | if (unparsedrequest) |
62e76326 | 98 | errstate->request_hdrs = xstrdup(unparsedrequest); |
edce4d98 | 99 | |
8eb0a7ee CT |
100 | #if USE_AUTH |
101 | errstate->auth_user_request = auth_user_request; | |
102 | #endif | |
103 | setReplyToError(method, errstate); | |
104 | } | |
105 | ||
106 | void clientReplyContext::setReplyToError(const HttpRequestMethod& method, ErrorState *errstate) | |
107 | { | |
955394ce | 108 | if (errstate->httpStatus == Http::scNotImplemented && http->request) |
62e76326 | 109 | /* prevent confusion over whether we default to persistent or not */ |
e857372a | 110 | http->request->flags.proxyKeepalive = false; |
62e76326 | 111 | |
41ebd397 | 112 | http->al->http.code = errstate->httpStatus; |
edce4d98 | 113 | |
f0baf149 AR |
114 | if (http->request) |
115 | http->request->ignoreRange("responding with a Squid-generated error"); | |
116 | ||
f206b652 | 117 | createStoreEntry(method, RequestFlags()); |
edce4d98 | 118 | assert(errstate->callback_data == NULL); |
86a2f789 | 119 | errorAppendEntry(http->storeEntry(), errstate); |
edce4d98 | 120 | /* Now the caller reads to get this */ |
121 | } | |
122 | ||
eacfca83 AR |
123 | void |
124 | clientReplyContext::setReplyToReply(HttpReply *futureReply) | |
125 | { | |
126 | Must(futureReply); | |
127 | http->al->http.code = futureReply->sline.status(); | |
128 | ||
129 | HttpRequestMethod method; | |
130 | if (http->request) { // nil on responses to unparsable requests | |
131 | http->request->ignoreRange("responding with a Squid-generated reply"); | |
132 | method = http->request->method; | |
133 | } | |
134 | ||
135 | createStoreEntry(method, RequestFlags()); | |
136 | ||
137 | http->storeEntry()->storeErrorResponse(futureReply); | |
138 | /* Now the caller reads to get futureReply */ | |
139 | } | |
140 | ||
f0baf149 AR |
141 | // Assumes that the entry contains an error response without Content-Range. |
142 | // To use with regular entries, make HTTP Range header removal conditional. | |
143 | void clientReplyContext::setReplyToStoreEntry(StoreEntry *entry, const char *reason) | |
061bbdec | 144 | { |
1bfe9ade | 145 | entry->lock("clientReplyContext::setReplyToStoreEntry"); // removeClientStoreReference() unlocks |
061bbdec CT |
146 | sc = storeClientListAdd(entry, this); |
147 | #if USE_DELAY_POOLS | |
148 | sc->setDelayId(DelayId::DelayClient(http)); | |
149 | #endif | |
150 | reqofs = 0; | |
151 | reqsize = 0; | |
f0baf149 AR |
152 | if (http->request) |
153 | http->request->ignoreRange(reason); | |
061bbdec CT |
154 | flags.storelogiccomplete = 1; |
155 | http->storeEntry(entry); | |
156 | } | |
157 | ||
edce4d98 | 158 | void |
0655fa4d | 159 | clientReplyContext::removeStoreReference(store_client ** scp, |
160 | StoreEntry ** ep) | |
edce4d98 | 161 | { |
162 | StoreEntry *e; | |
e4ae841b | 163 | store_client *sc_tmp = *scp; |
62e76326 | 164 | |
edce4d98 | 165 | if ((e = *ep) != NULL) { |
62e76326 | 166 | *ep = NULL; |
e4ae841b | 167 | storeUnregister(sc_tmp, e, this); |
62e76326 | 168 | *scp = NULL; |
1bfe9ade | 169 | e->unlock("clientReplyContext::removeStoreReference"); |
edce4d98 | 170 | } |
171 | } | |
172 | ||
86a2f789 | 173 | void |
8bcf08e0 | 174 | clientReplyContext::removeClientStoreReference(store_client **scp, ClientHttpRequest *aHttpRequest) |
86a2f789 | 175 | { |
8bcf08e0 | 176 | StoreEntry *reference = aHttpRequest->storeEntry(); |
86a2f789 | 177 | removeStoreReference(scp, &reference); |
8bcf08e0 | 178 | aHttpRequest->storeEntry(reference); |
86a2f789 | 179 | } |
180 | ||
edce4d98 | 181 | void |
0655fa4d | 182 | clientReplyContext::saveState() |
edce4d98 | 183 | { |
e6ccf245 | 184 | assert(old_sc == NULL); |
bf8fe701 | 185 | debugs(88, 3, "clientReplyContext::saveState: saving store context"); |
86a2f789 | 186 | old_entry = http->storeEntry(); |
e6ccf245 | 187 | old_sc = sc; |
188 | old_reqsize = reqsize; | |
189 | tempBuffer.offset = reqofs; | |
edce4d98 | 190 | /* Prevent accessing the now saved entries */ |
86a2f789 | 191 | http->storeEntry(NULL); |
e6ccf245 | 192 | sc = NULL; |
193 | reqsize = 0; | |
194 | reqofs = 0; | |
edce4d98 | 195 | } |
196 | ||
197 | void | |
0655fa4d | 198 | clientReplyContext::restoreState() |
edce4d98 | 199 | { |
e6ccf245 | 200 | assert(old_sc != NULL); |
bf8fe701 | 201 | debugs(88, 3, "clientReplyContext::restoreState: Restoring store context"); |
86a2f789 | 202 | removeClientStoreReference(&sc, http); |
203 | http->storeEntry(old_entry); | |
e6ccf245 | 204 | sc = old_sc; |
205 | reqsize = old_reqsize; | |
206 | reqofs = tempBuffer.offset; | |
edce4d98 | 207 | /* Prevent accessed the old saved entries */ |
0655fa4d | 208 | old_entry = NULL; |
e6ccf245 | 209 | old_sc = NULL; |
210 | old_reqsize = 0; | |
211 | tempBuffer.offset = 0; | |
c8be6d7b | 212 | } |
213 | ||
214 | void | |
0655fa4d | 215 | clientReplyContext::startError(ErrorState * err) |
c8be6d7b | 216 | { |
f206b652 | 217 | createStoreEntry(http->request->method, RequestFlags()); |
0655fa4d | 218 | triggerInitialStoreRead(); |
86a2f789 | 219 | errorAppendEntry(http->storeEntry(), err); |
edce4d98 | 220 | } |
221 | ||
e6ccf245 | 222 | clientStreamNode * |
528b2c61 | 223 | clientReplyContext::getNextNode() const |
e6ccf245 | 224 | { |
62e76326 | 225 | return (clientStreamNode *)ourNode->node.next->data; |
e6ccf245 | 226 | } |
227 | ||
62e76326 | 228 | /* This function is wrong - the client parameters don't include the |
528b2c61 | 229 | * header offset |
230 | */ | |
c8be6d7b | 231 | void |
0655fa4d | 232 | clientReplyContext::triggerInitialStoreRead() |
c8be6d7b | 233 | { |
0655fa4d | 234 | /* when confident, 0 becomes reqofs, and then this factors into |
26ac0430 | 235 | * startSendProcess |
528b2c61 | 236 | */ |
0655fa4d | 237 | assert(reqofs == 0); |
8bcf08e0 FC |
238 | StoreIOBuffer localTempBuffer (next()->readBuffer.length, 0, next()->readBuffer.data); |
239 | storeClientCopy(sc, http->storeEntry(), localTempBuffer, SendMoreData, this); | |
c8be6d7b | 240 | } |
edce4d98 | 241 | |
242 | /* there is an expired entry in the store. | |
243 | * setup a temporary buffer area and perform an IMS to the origin | |
244 | */ | |
0655fa4d | 245 | void |
246 | clientReplyContext::processExpired() | |
edce4d98 | 247 | { |
a8a0b1c2 | 248 | const char *url = storeId(); |
edce4d98 | 249 | StoreEntry *entry = NULL; |
bf8fe701 | 250 | debugs(88, 3, "clientReplyContext::processExpired: '" << http->uri << "'"); |
86a2f789 | 251 | assert(http->storeEntry()->lastmod >= 0); |
edce4d98 | 252 | /* |
253 | * check if we are allowed to contact other servers | |
26ac0430 | 254 | * @?@: Instead of a 504 (Gateway Timeout) reply, we may want to return |
edce4d98 | 255 | * a stale entry *if* it matches client requirements |
256 | */ | |
62e76326 | 257 | |
0655fa4d | 258 | if (http->onlyIfCached()) { |
259 | processOnlyIfCachedMiss(); | |
62e76326 | 260 | return; |
edce4d98 | 261 | } |
62e76326 | 262 | |
e857372a | 263 | http->request->flags.refresh = true; |
edce4d98 | 264 | #if STORE_CLIENT_LIST_DEBUG |
c8be6d7b | 265 | /* Prevent a race with the store client memory free routines |
edce4d98 | 266 | */ |
0655fa4d | 267 | assert(storeClientIsThisAClient(sc, this)); |
edce4d98 | 268 | #endif |
269 | /* Prepare to make a new temporary request */ | |
0655fa4d | 270 | saveState(); |
edce4d98 | 271 | entry = storeCreateEntry(url, |
62e76326 | 272 | http->log_uri, http->request->flags, http->request->method); |
34266cde | 273 | /* NOTE, don't call StoreEntry->lock(), storeCreateEntry() does it */ |
0655fa4d | 274 | sc = storeClientListAdd(entry, this); |
9a0a18de | 275 | #if USE_DELAY_POOLS |
edce4d98 | 276 | /* delay_id is already set on original store client */ |
0655fa4d | 277 | sc->setDelayId(DelayId::DelayClient(http)); |
edce4d98 | 278 | #endif |
62e76326 | 279 | |
0655fa4d | 280 | http->request->lastmod = old_entry->lastmod; |
46017fdd CT |
281 | |
282 | if (!http->request->header.has(HDR_IF_NONE_MATCH)) { | |
283 | ETag etag = {NULL, -1}; // TODO: make that a default ETag constructor | |
284 | if (old_entry->hasEtag(etag) && !etag.weak) | |
285 | http->request->etag = etag.str; | |
286 | } | |
287 | ||
4a7a3d56 | 288 | debugs(88, 5, "clientReplyContext::processExpired : lastmod " << entry->lastmod ); |
86a2f789 | 289 | http->storeEntry(entry); |
c8be6d7b | 290 | assert(http->out.offset == 0); |
9174ba3d | 291 | assert(http->request->clientConnectionManager == http->getConn()); |
655daa06 | 292 | |
b2d22df6 | 293 | /* |
294 | * A refcounted pointer so that FwdState stays around as long as | |
295 | * this clientReplyContext does | |
296 | */ | |
73c36fd9 | 297 | Comm::ConnectionPointer conn = http->getConn() != NULL ? http->getConn()->clientConnection : NULL; |
4bf68cfa | 298 | FwdState::Start(conn, http->storeEntry(), http->request, http->al); |
62e76326 | 299 | |
edce4d98 | 300 | /* Register with storage manager to receive updates when data comes in. */ |
62e76326 | 301 | |
edce4d98 | 302 | if (EBIT_TEST(entry->flags, ENTRY_ABORTED)) |
fa84c01d | 303 | debugs(88, DBG_CRITICAL, "clientReplyContext::processExpired: Found ENTRY_ABORTED object"); |
62e76326 | 304 | |
c8be6d7b | 305 | { |
62e76326 | 306 | /* start counting the length from 0 */ |
8bcf08e0 FC |
307 | StoreIOBuffer localTempBuffer(HTTP_REQBUF_SZ, 0, tempbuf); |
308 | storeClientCopy(sc, entry, localTempBuffer, HandleIMSReply, this); | |
edce4d98 | 309 | } |
310 | } | |
311 | ||
528b2c61 | 312 | void |
313 | clientReplyContext::sendClientUpstreamResponse() | |
314 | { | |
315 | StoreIOBuffer tempresult; | |
0655fa4d | 316 | removeStoreReference(&old_sc, &old_entry); |
2324cda2 | 317 | /* here the data to send is the data we just received */ |
528b2c61 | 318 | tempBuffer.offset = 0; |
319 | old_reqsize = 0; | |
0655fa4d | 320 | /* sendMoreData tracks the offset as well. |
528b2c61 | 321 | * Force it back to zero */ |
322 | reqofs = 0; | |
86a2f789 | 323 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 324 | /* TODO: provide sendMoreData with the ready parsed reply */ |
528b2c61 | 325 | tempresult.length = reqsize; |
326 | tempresult.data = tempbuf; | |
0655fa4d | 327 | sendMoreData(tempresult); |
528b2c61 | 328 | } |
329 | ||
edce4d98 | 330 | void |
0655fa4d | 331 | clientReplyContext::HandleIMSReply(void *data, StoreIOBuffer result) |
edce4d98 | 332 | { |
e6ccf245 | 333 | clientReplyContext *context = (clientReplyContext *)data; |
0655fa4d | 334 | context->handleIMSReply(result); |
335 | } | |
62e76326 | 336 | |
0655fa4d | 337 | void |
338 | clientReplyContext::sendClientOldEntry() | |
339 | { | |
340 | /* Get the old request back */ | |
341 | restoreState(); | |
342 | /* here the data to send is in the next nodes buffers already */ | |
86a2f789 | 343 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 344 | /* sendMoreData tracks the offset as well. |
345 | * Force it back to zero */ | |
346 | reqofs = 0; | |
347 | StoreIOBuffer tempresult (reqsize, reqofs, next()->readBuffer.data); | |
348 | sendMoreData(tempresult); | |
349 | } | |
62e76326 | 350 | |
1d7ab0f4 | 351 | /* This is the workhorse of the HandleIMSReply callback. |
352 | * | |
353 | * It is called when we've got data back from the origin following our | |
354 | * IMS request to revalidate a stale entry. | |
355 | */ | |
0655fa4d | 356 | void |
1d7ab0f4 | 357 | clientReplyContext::handleIMSReply(StoreIOBuffer result) |
0655fa4d | 358 | { |
1d7ab0f4 | 359 | if (deleting) |
360 | return; | |
62e76326 | 361 | |
bf8fe701 | 362 | debugs(88, 3, "handleIMSReply: " << http->storeEntry()->url() << ", " << (long unsigned) result.length << " bytes" ); |
62e76326 | 363 | |
1d7ab0f4 | 364 | if (http->storeEntry() == NULL) |
365 | return; | |
07947ad8 | 366 | |
1d7ab0f4 | 367 | if (result.flags.error && !EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) |
368 | return; | |
62e76326 | 369 | |
1d7ab0f4 | 370 | /* update size of the request */ |
371 | reqsize = result.length + reqofs; | |
62e76326 | 372 | |
9b769c67 | 373 | const Http::StatusCode status = http->storeEntry()->getReply()->sline.status(); |
62e76326 | 374 | |
1d7ab0f4 | 375 | // request to origin was aborted |
376 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) { | |
bf8fe701 | 377 | debugs(88, 3, "handleIMSReply: request to origin aborted '" << http->storeEntry()->url() << "', sending old entry to client" ); |
7948b784 | 378 | http->logType = LOG_TCP_REFRESH_FAIL_OLD; |
1d7ab0f4 | 379 | sendClientOldEntry(); |
0655fa4d | 380 | } |
62e76326 | 381 | |
b297bcd0 | 382 | HttpReply *old_rep = (HttpReply *) old_entry->getReply(); |
62e76326 | 383 | |
b297bcd0 | 384 | // origin replied 304 |
955394ce | 385 | if (status == Http::scNotModified) { |
26ac0430 | 386 | http->logType = LOG_TCP_REFRESH_UNMODIFIED; |
e857372a | 387 | http->request->flags.staleIfHit = false; // old_entry is no longer stale |
045a76ab | 388 | |
26ac0430 | 389 | // update headers on existing entry |
4802f60d | 390 | old_rep->updateOnNotModified(http->storeEntry()->getReply()); |
26ac0430 | 391 | old_entry->timestampsSet(); |
62e76326 | 392 | |
26ac0430 | 393 | // if client sent IMS |
62e76326 | 394 | |
45e5102d | 395 | if (http->request->flags.ims && !old_entry->modifiedSince(http->request)) { |
26ac0430 AJ |
396 | // forward the 304 from origin |
397 | debugs(88, 3, "handleIMSReply: origin replied 304, revalidating existing entry and forwarding 304 to client"); | |
398 | sendClientUpstreamResponse(); | |
399 | } else { | |
400 | // send existing entry, it's still valid | |
401 | debugs(88, 3, "handleIMSReply: origin replied 304, revalidating existing entry and sending " << | |
9b769c67 | 402 | old_rep->sline.status() << " to client"); |
26ac0430 AJ |
403 | sendClientOldEntry(); |
404 | } | |
b297bcd0 | 405 | } |
62e76326 | 406 | |
b297bcd0 | 407 | // origin replied with a non-error code |
955394ce | 408 | else if (status > Http::scNone && status < Http::scInternalServerError) { |
26ac0430 AJ |
409 | // forward response from origin |
410 | http->logType = LOG_TCP_REFRESH_MODIFIED; | |
411 | debugs(88, 3, "handleIMSReply: origin replied " << status << ", replacing existing entry and forwarding to client"); | |
412 | sendClientUpstreamResponse(); | |
b297bcd0 | 413 | } |
62e76326 | 414 | |
b297bcd0 | 415 | // origin replied with an error |
450fe1cb | 416 | else if (http->request->flags.failOnValidationError) { |
7948b784 AR |
417 | http->logType = LOG_TCP_REFRESH_FAIL_ERR; |
418 | debugs(88, 3, "handleIMSReply: origin replied with error " << status << | |
419 | ", forwarding to client due to fail_on_validation_err"); | |
420 | sendClientUpstreamResponse(); | |
421 | } else { | |
26ac0430 | 422 | // ignore and let client have old entry |
7948b784 | 423 | http->logType = LOG_TCP_REFRESH_FAIL_OLD; |
26ac0430 | 424 | debugs(88, 3, "handleIMSReply: origin replied with error " << |
9b769c67 | 425 | status << ", sending old entry (" << old_rep->sline.status() << ") to client"); |
26ac0430 | 426 | sendClientOldEntry(); |
1d7ab0f4 | 427 | } |
edce4d98 | 428 | } |
429 | ||
82afb125 FC |
430 | SQUIDCEXTERN CSR clientGetMoreData; |
431 | SQUIDCEXTERN CSD clientReplyDetach; | |
edce4d98 | 432 | |
7d5f62a4 AJ |
433 | /** |
434 | * clientReplyContext::cacheHit Should only be called until the HTTP reply headers | |
edce4d98 | 435 | * have been parsed. Normally this should be a single call, but |
436 | * it might take more than one. As soon as we have the headers, | |
0655fa4d | 437 | * we hand off to clientSendMoreData, processExpired, or |
438 | * processMiss. | |
edce4d98 | 439 | */ |
440 | void | |
0655fa4d | 441 | clientReplyContext::CacheHit(void *data, StoreIOBuffer result) |
edce4d98 | 442 | { |
e6ccf245 | 443 | clientReplyContext *context = (clientReplyContext *)data; |
7d5f62a4 | 444 | context->cacheHit(result); |
0655fa4d | 445 | } |
446 | ||
7d5f62a4 AJ |
447 | /** |
448 | * Process a possible cache HIT. | |
449 | */ | |
0655fa4d | 450 | void |
451 | clientReplyContext::cacheHit(StoreIOBuffer result) | |
452 | { | |
7d5f62a4 | 453 | /** Ignore if the HIT object is being deleted. */ |
1b7514d9 AJ |
454 | if (deleting) { |
455 | debugs(88, 3, "HIT object being deleted. Ignore the HIT."); | |
045a76ab | 456 | return; |
1b7514d9 | 457 | } |
045a76ab | 458 | |
86a2f789 | 459 | StoreEntry *e = http->storeEntry(); |
045a76ab | 460 | |
190154cf | 461 | HttpRequest *r = http->request; |
045a76ab | 462 | |
4a7a3d56 | 463 | debugs(88, 3, "clientCacheHit: " << http->uri << ", " << result.length << " bytes"); |
62e76326 | 464 | |
86a2f789 | 465 | if (http->storeEntry() == NULL) { |
bf8fe701 | 466 | debugs(88, 3, "clientCacheHit: request aborted"); |
62e76326 | 467 | return; |
c8be6d7b | 468 | } else if (result.flags.error) { |
62e76326 | 469 | /* swap in failure */ |
bf8fe701 | 470 | debugs(88, 3, "clientCacheHit: swapin failure for " << http->uri); |
62e76326 | 471 | http->logType = LOG_TCP_SWAPFAIL_MISS; |
86a2f789 | 472 | removeClientStoreReference(&sc, http); |
0655fa4d | 473 | processMiss(); |
62e76326 | 474 | return; |
edce4d98 | 475 | } |
62e76326 | 476 | |
d3b3ab85 | 477 | if (result.length == 0) { |
1b7514d9 | 478 | debugs(88, 5, "store IO buffer has no content. MISS"); |
62e76326 | 479 | /* the store couldn't get enough data from the file for us to id the |
480 | * object | |
481 | */ | |
482 | /* treat as a miss */ | |
483 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 484 | processMiss(); |
62e76326 | 485 | return; |
d3b3ab85 | 486 | } |
62e76326 | 487 | |
edce4d98 | 488 | assert(!EBIT_TEST(e->flags, ENTRY_ABORTED)); |
489 | /* update size of the request */ | |
0655fa4d | 490 | reqsize = result.length + reqofs; |
62e76326 | 491 | |
edce4d98 | 492 | /* |
493 | * Got the headers, now grok them | |
494 | */ | |
29b8d8d6 | 495 | assert(http->logType == LOG_TCP_HIT); |
62e76326 | 496 | |
c877c0bc AR |
497 | if (strcmp(e->mem_obj->storeId(), http->request->storeId()) != 0) { |
498 | debugs(33, DBG_IMPORTANT, "clientProcessHit: URL mismatch, '" << e->mem_obj->storeId() << "' != '" << http->request->storeId() << "'"); | |
b8a899c0 | 499 | http->logType = LOG_TCP_MISS; // we lack a more precise LOG_*_MISS code |
cdd4e1c1 | 500 | processMiss(); |
501 | return; | |
502 | } | |
503 | ||
edce4d98 | 504 | switch (varyEvaluateMatch(e, r)) { |
62e76326 | 505 | |
edce4d98 | 506 | case VARY_NONE: |
62e76326 | 507 | /* No variance detected. Continue as normal */ |
508 | break; | |
509 | ||
edce4d98 | 510 | case VARY_MATCH: |
62e76326 | 511 | /* This is the correct entity for this request. Continue */ |
bf8fe701 | 512 | debugs(88, 2, "clientProcessHit: Vary MATCH!"); |
62e76326 | 513 | break; |
514 | ||
edce4d98 | 515 | case VARY_OTHER: |
62e76326 | 516 | /* This is not the correct entity for this request. We need |
517 | * to requery the cache. | |
518 | */ | |
86a2f789 | 519 | removeClientStoreReference(&sc, http); |
62e76326 | 520 | e = NULL; |
521 | /* Note: varyEvalyateMatch updates the request with vary information | |
522 | * so we only get here once. (it also takes care of cancelling loops) | |
523 | */ | |
26ac0430 | 524 | debugs(88, 2, "clientProcessHit: Vary detected!"); |
0655fa4d | 525 | clientGetMoreData(ourNode, http); |
62e76326 | 526 | return; |
527 | ||
edce4d98 | 528 | case VARY_CANCEL: |
62e76326 | 529 | /* varyEvaluateMatch found a object loop. Process as miss */ |
e0236918 | 530 | debugs(88, DBG_IMPORTANT, "clientProcessHit: Vary object loop!"); |
b8a899c0 | 531 | http->logType = LOG_TCP_MISS; // we lack a more precise LOG_*_MISS code |
0655fa4d | 532 | processMiss(); |
62e76326 | 533 | return; |
edce4d98 | 534 | } |
62e76326 | 535 | |
c2a7cefd | 536 | if (r->method == Http::METHOD_PURGE) { |
1b7514d9 | 537 | debugs(88, 5, "PURGE gets a HIT"); |
86a2f789 | 538 | removeClientStoreReference(&sc, http); |
62e76326 | 539 | e = NULL; |
0655fa4d | 540 | purgeRequest(); |
62e76326 | 541 | return; |
edce4d98 | 542 | } |
62e76326 | 543 | |
1b7514d9 AJ |
544 | if (e->checkNegativeHit() && !r->flags.noCacheHack()) { |
545 | debugs(88, 5, "negative-HIT"); | |
62e76326 | 546 | http->logType = LOG_TCP_NEGATIVE_HIT; |
0655fa4d | 547 | sendMoreData(result); |
70706149 AR |
548 | } else if (blockedHit()) { |
549 | debugs(88, 5, "send_hit forces a MISS"); | |
550 | http->logType = LOG_TCP_MISS; | |
551 | processMiss(); | |
552 | return; | |
bcfba8bd | 553 | } else if (!http->flags.internal && refreshCheckHTTP(e, r)) { |
bf8fe701 | 554 | debugs(88, 5, "clientCacheHit: in refreshCheck() block"); |
62e76326 | 555 | /* |
556 | * We hold a stale copy; it needs to be validated | |
557 | */ | |
558 | /* | |
450fe1cb | 559 | * The 'needValidation' flag is used to prevent forwarding |
62e76326 | 560 | * loops between siblings. If our copy of the object is stale, |
561 | * then we should probably only use parents for the validation | |
562 | * request. Otherwise two siblings could generate a loop if | |
563 | * both have a stale version of the object. | |
564 | */ | |
e857372a | 565 | r->flags.needValidation = true; |
62e76326 | 566 | |
567 | if (e->lastmod < 0) { | |
86310427 | 568 | debugs(88, 3, "validate HIT object? NO. Missing Last-Modified header. Do MISS."); |
62e76326 | 569 | /* |
570 | * Previous reply didn't have a Last-Modified header, | |
571 | * we cannot revalidate it. | |
572 | */ | |
573 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 574 | processMiss(); |
450fe1cb | 575 | } else if (r->flags.noCache) { |
86310427 | 576 | debugs(88, 3, "validate HIT object? NO. Client sent CC:no-cache. Do CLIENT_REFRESH_MISS"); |
62e76326 | 577 | /* |
578 | * This did not match a refresh pattern that overrides no-cache | |
579 | * we should honour the client no-cache header. | |
580 | */ | |
581 | http->logType = LOG_TCP_CLIENT_REFRESH_MISS; | |
0655fa4d | 582 | processMiss(); |
4e3f4dc7 | 583 | } else if (r->url.getScheme() == AnyP::PROTO_HTTP) { |
86310427 | 584 | debugs(88, 3, "validate HIT object? YES."); |
62e76326 | 585 | /* |
586 | * Object needs to be revalidated | |
587 | * XXX This could apply to FTP as well, if Last-Modified is known. | |
588 | */ | |
0655fa4d | 589 | processExpired(); |
62e76326 | 590 | } else { |
86310427 | 591 | debugs(88, 3, "validate HIT object? NO. Client protocol non-HTTP. Do MISS."); |
62e76326 | 592 | /* |
593 | * We don't know how to re-validate other protocols. Handle | |
594 | * them as if the object has expired. | |
595 | */ | |
596 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 597 | processMiss(); |
62e76326 | 598 | } |
1b7514d9 AJ |
599 | } else if (r->conditional()) { |
600 | debugs(88, 5, "conditional HIT"); | |
79c8035e | 601 | processConditional(result); |
1b7514d9 | 602 | } else { |
62e76326 | 603 | /* |
604 | * plain ol' cache hit | |
605 | */ | |
1b7514d9 | 606 | debugs(88, 5, "plain old HIT"); |
62e76326 | 607 | |
9a0a18de | 608 | #if USE_DELAY_POOLS |
ffdf45f2 | 609 | if (e->store_status != STORE_OK) |
849b826a | 610 | http->logType = LOG_TCP_MISS; |
5bf4d170 | 611 | else |
612 | #endif | |
26ac0430 AJ |
613 | if (e->mem_status == IN_MEMORY) |
614 | http->logType = LOG_TCP_MEM_HIT; | |
615 | else if (Config.onoff.offline) | |
616 | http->logType = LOG_TCP_OFFLINE_HIT; | |
62e76326 | 617 | |
0655fa4d | 618 | sendMoreData(result); |
edce4d98 | 619 | } |
620 | } | |
621 | ||
7d5f62a4 | 622 | /** |
edce4d98 | 623 | * Prepare to fetch the object as it's a cache miss of some kind. |
624 | */ | |
625 | void | |
0655fa4d | 626 | clientReplyContext::processMiss() |
edce4d98 | 627 | { |
edce4d98 | 628 | char *url = http->uri; |
190154cf | 629 | HttpRequest *r = http->request; |
edce4d98 | 630 | ErrorState *err = NULL; |
7f06a3d8 | 631 | debugs(88, 4, r->method << ' ' << url); |
7d5f62a4 AJ |
632 | |
633 | /** | |
edce4d98 | 634 | * We might have a left-over StoreEntry from a failed cache hit |
635 | * or IMS request. | |
636 | */ | |
86a2f789 | 637 | if (http->storeEntry()) { |
638 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_SPECIAL)) { | |
fa84c01d | 639 | debugs(88, DBG_CRITICAL, "clientProcessMiss: miss on a special object (" << url << ")."); |
02c8dde5 | 640 | debugs(88, DBG_CRITICAL, "\tlog_type = " << LogTags_str[http->logType]); |
3900307b | 641 | http->storeEntry()->dump(1); |
62e76326 | 642 | } |
643 | ||
86a2f789 | 644 | removeClientStoreReference(&sc, http); |
edce4d98 | 645 | } |
62e76326 | 646 | |
7d5f62a4 | 647 | /** Check if its a PURGE request to be actioned. */ |
c2a7cefd | 648 | if (r->method == Http::METHOD_PURGE) { |
0655fa4d | 649 | purgeRequest(); |
62e76326 | 650 | return; |
edce4d98 | 651 | } |
914b89a2 | 652 | |
7d5f62a4 | 653 | /** Check if its an 'OTHER' request. Purge all cached entries if so and continue. */ |
c2a7cefd | 654 | if (r->method == Http::METHOD_OTHER) { |
26ac0430 | 655 | purgeAllCached(); |
60745f24 | 656 | } |
62e76326 | 657 | |
7d5f62a4 | 658 | /** Check if 'only-if-cached' flag is set. Action if so. */ |
0655fa4d | 659 | if (http->onlyIfCached()) { |
660 | processOnlyIfCachedMiss(); | |
62e76326 | 661 | return; |
edce4d98 | 662 | } |
62e76326 | 663 | |
42829656 | 664 | /// Deny loops |
450fe1cb | 665 | if (r->flags.loopDetected) { |
955394ce AJ |
666 | http->al->http.code = Http::scForbidden; |
667 | err = clientBuildError(ERR_ACCESS_DENIED, Http::scForbidden, NULL, http->getConn()->clientConnection->remote, http->request); | |
f206b652 | 668 | createStoreEntry(r->method, RequestFlags()); |
86a2f789 | 669 | errorAppendEntry(http->storeEntry(), err); |
0655fa4d | 670 | triggerInitialStoreRead(); |
62e76326 | 671 | return; |
edce4d98 | 672 | } else { |
26ac0430 | 673 | assert(http->out.offset == 0); |
0655fa4d | 674 | createStoreEntry(r->method, r->flags); |
675 | triggerInitialStoreRead(); | |
62e76326 | 676 | |
677 | if (http->redirect.status) { | |
06a5ae20 | 678 | HttpReply *rep = new HttpReply; |
62e76326 | 679 | http->logType = LOG_TCP_REDIRECT; |
d88e3c49 | 680 | http->storeEntry()->releaseRequest(); |
06a5ae20 | 681 | rep->redirect(http->redirect.status, http->redirect.location); |
db237875 | 682 | http->storeEntry()->replaceHttpReply(rep); |
86a2f789 | 683 | http->storeEntry()->complete(); |
62e76326 | 684 | return; |
685 | } | |
686 | ||
9174ba3d | 687 | assert(r->clientConnectionManager == http->getConn()); |
655daa06 | 688 | |
7d5f62a4 | 689 | /** Start forwarding to get the new object from network */ |
73c36fd9 | 690 | Comm::ConnectionPointer conn = http->getConn() != NULL ? http->getConn()->clientConnection : NULL; |
4bf68cfa | 691 | FwdState::Start(conn, http->storeEntry(), r, http->al); |
edce4d98 | 692 | } |
693 | } | |
694 | ||
7d5f62a4 | 695 | /** |
edce4d98 | 696 | * client issued a request with an only-if-cached cache-control directive; |
697 | * we did not find a cached object that can be returned without | |
698 | * contacting other servers; | |
699 | * respond with a 504 (Gateway Timeout) as suggested in [RFC 2068] | |
700 | */ | |
0655fa4d | 701 | void |
702 | clientReplyContext::processOnlyIfCachedMiss() | |
edce4d98 | 703 | { |
7f06a3d8 | 704 | debugs(88, 4, http->request->method << ' ' << http->uri); |
f11c8e2f AJ |
705 | http->al->http.code = Http::scGatewayTimeout; |
706 | ErrorState *err = clientBuildError(ERR_ONLY_IF_CACHED_MISS, Http::scGatewayTimeout, NULL, | |
73c36fd9 | 707 | http->getConn()->clientConnection->remote, http->request); |
86a2f789 | 708 | removeClientStoreReference(&sc, http); |
0655fa4d | 709 | startError(err); |
edce4d98 | 710 | } |
711 | ||
79c8035e AR |
712 | /// process conditional request from client |
713 | void | |
714 | clientReplyContext::processConditional(StoreIOBuffer &result) | |
715 | { | |
a2bd457d | 716 | StoreEntry *const e = http->storeEntry(); |
79c8035e | 717 | |
9b769c67 | 718 | if (e->getReply()->sline.status() != Http::scOkay) { |
79c8035e | 719 | debugs(88, 4, "clientReplyContext::processConditional: Reply code " << |
9b769c67 | 720 | e->getReply()->sline.status() << " != 200"); |
79c8035e AR |
721 | http->logType = LOG_TCP_MISS; |
722 | processMiss(); | |
723 | return; | |
724 | } | |
725 | ||
726 | HttpRequest &r = *http->request; | |
727 | ||
728 | if (r.header.has(HDR_IF_MATCH) && !e->hasIfMatchEtag(r)) { | |
729 | // RFC 2616: reply with 412 Precondition Failed if If-Match did not match | |
730 | sendPreconditionFailedError(); | |
731 | return; | |
732 | } | |
733 | ||
734 | bool matchedIfNoneMatch = false; | |
735 | if (r.header.has(HDR_IF_NONE_MATCH)) { | |
736 | if (!e->hasIfNoneMatchEtag(r)) { | |
737 | // RFC 2616: ignore IMS if If-None-Match did not match | |
e857372a | 738 | r.flags.ims = false; |
79c8035e AR |
739 | r.ims = -1; |
740 | r.imslen = 0; | |
741 | r.header.delById(HDR_IF_MODIFIED_SINCE); | |
742 | http->logType = LOG_TCP_MISS; | |
743 | sendMoreData(result); | |
744 | return; | |
745 | } | |
746 | ||
45e5102d | 747 | if (!r.flags.ims) { |
79c8035e | 748 | // RFC 2616: if If-None-Match matched and there is no IMS, |
a2bd457d AJ |
749 | // reply with 304 Not Modified or 412 Precondition Failed |
750 | sendNotModifiedOrPreconditionFailedError(); | |
79c8035e AR |
751 | return; |
752 | } | |
753 | ||
a2bd457d | 754 | // otherwise check IMS below to decide if we reply with 304 or 412 |
79c8035e AR |
755 | matchedIfNoneMatch = true; |
756 | } | |
757 | ||
45e5102d | 758 | if (r.flags.ims) { |
79c8035e AR |
759 | // handle If-Modified-Since requests from the client |
760 | if (e->modifiedSince(&r)) { | |
761 | http->logType = LOG_TCP_IMS_HIT; | |
762 | sendMoreData(result); | |
763 | return; | |
764 | } | |
765 | ||
766 | if (matchedIfNoneMatch) { | |
a2bd457d AJ |
767 | // If-None-Match matched, reply with 304 Not Modified or |
768 | // 412 Precondition Failed | |
769 | sendNotModifiedOrPreconditionFailedError(); | |
79c8035e AR |
770 | return; |
771 | } | |
772 | ||
773 | // otherwise reply with 304 Not Modified | |
a2bd457d | 774 | sendNotModified(); |
79c8035e AR |
775 | } |
776 | } | |
777 | ||
70706149 AR |
778 | /// whether squid.conf send_hit prevents us from serving this hit |
779 | bool | |
780 | clientReplyContext::blockedHit() const | |
781 | { | |
782 | if (!Config.accessList.sendHit) | |
783 | return false; // hits are not blocked by default | |
784 | ||
785 | if (http->flags.internal) | |
786 | return false; // internal content "hits" cannot be blocked | |
787 | ||
788 | if (const HttpReply *rep = http->storeEntry()->getReply()) { | |
789 | std::auto_ptr<ACLFilledChecklist> chl(clientAclChecklistCreate(Config.accessList.sendHit, http)); | |
790 | chl->reply = const_cast<HttpReply*>(rep); // ACLChecklist API bug | |
791 | HTTPMSGLOCK(chl->reply); | |
792 | return chl->fastCheck() != ACCESS_ALLOWED; // when in doubt, block | |
793 | } | |
794 | ||
795 | // This does not happen, I hope, because we are called from CacheHit, which | |
796 | // is called via a storeClientCopy() callback, and store should initialize | |
797 | // the reply before calling that callback. | |
798 | debugs(88, 3, "Missing reply!"); | |
799 | return false; | |
800 | } | |
801 | ||
edce4d98 | 802 | void |
e6ccf245 | 803 | clientReplyContext::purgeRequestFindObjectToPurge() |
26ac0430 | 804 | { |
e6ccf245 | 805 | /* Try to find a base entry */ |
be4d35dc | 806 | http->flags.purging = true; |
e6ccf245 | 807 | lookingforstore = 1; |
26ac0430 AJ |
808 | |
809 | // TODO: can we use purgeAllCached() here instead of doing the | |
810 | // getPublicByRequestMethod() dance? | |
c2a7cefd | 811 | StoreEntry::getPublicByRequestMethod(this, http->request, Http::METHOD_GET); |
e6ccf245 | 812 | } |
813 | ||
c1520b67 AJ |
814 | // Purges all entries with a given url |
815 | // TODO: move to SideAgent parent, when we have one | |
60745f24 | 816 | /* |
817 | * We probably cannot purge Vary-affected responses because their MD5 | |
818 | * keys depend on vary headers. | |
819 | */ | |
c1520b67 | 820 | void |
90bd689c | 821 | purgeEntriesByUrl(HttpRequest * req, const char *url) |
c1520b67 | 822 | { |
8dceeee3 BR |
823 | #if USE_HTCP |
824 | bool get_or_head_sent = false; | |
825 | #endif | |
26ac0430 | 826 | |
c2a7cefd AJ |
827 | for (HttpRequestMethod m(Http::METHOD_NONE); m != Http::METHOD_ENUM_END; ++m) { |
828 | if (m.respMaybeCacheable()) { | |
c1520b67 | 829 | if (StoreEntry *entry = storeGetPublic(url, m)) { |
7f06a3d8 | 830 | debugs(88, 5, "purging " << *entry << ' ' << m << ' ' << url); |
90bd689c | 831 | #if USE_HTCP |
8dceeee3 | 832 | neighborsHtcpClear(entry, url, req, m, HTCP_CLR_INVALIDATION); |
c2a7cefd | 833 | if (m == Http::METHOD_GET || m == Http::METHOD_HEAD) { |
8dceeee3 BR |
834 | get_or_head_sent = true; |
835 | } | |
90bd689c | 836 | #endif |
8dceeee3 | 837 | entry->release(); |
c1520b67 AJ |
838 | } |
839 | } | |
840 | } | |
8dceeee3 BR |
841 | |
842 | #if USE_HTCP | |
843 | if (!get_or_head_sent) { | |
c2a7cefd | 844 | neighborsHtcpClear(NULL, url, req, HttpRequestMethod(Http::METHOD_GET), HTCP_CLR_INVALIDATION); |
8dceeee3 BR |
845 | } |
846 | #endif | |
c1520b67 AJ |
847 | } |
848 | ||
26ac0430 | 849 | void |
60745f24 | 850 | clientReplyContext::purgeAllCached() |
851 | { | |
26ac0430 | 852 | const char *url = urlCanonical(http->request); |
90bd689c | 853 | purgeEntriesByUrl(http->request, url); |
35ececa5 | 854 | } |
60745f24 | 855 | |
e6ccf245 | 856 | void |
3b13a8fd | 857 | clientReplyContext::created(StoreEntry *newEntry) |
e6ccf245 | 858 | { |
859 | if (lookingforstore == 1) | |
62e76326 | 860 | purgeFoundGet(newEntry); |
e6ccf245 | 861 | else if (lookingforstore == 2) |
62e76326 | 862 | purgeFoundHead(newEntry); |
e6ccf245 | 863 | else if (lookingforstore == 3) |
62e76326 | 864 | purgeDoPurgeGet(newEntry); |
e6ccf245 | 865 | else if (lookingforstore == 4) |
62e76326 | 866 | purgeDoPurgeHead(newEntry); |
e6ccf245 | 867 | else if (lookingforstore == 5) |
62e76326 | 868 | identifyFoundObject(newEntry); |
e6ccf245 | 869 | } |
870 | ||
871 | void | |
3b13a8fd | 872 | clientReplyContext::purgeFoundGet(StoreEntry *newEntry) |
e6ccf245 | 873 | { |
874 | if (newEntry->isNull()) { | |
62e76326 | 875 | lookingforstore = 2; |
c2a7cefd | 876 | StoreEntry::getPublicByRequestMethod(this, http->request, Http::METHOD_HEAD); |
e6ccf245 | 877 | } else |
62e76326 | 878 | purgeFoundObject (newEntry); |
e6ccf245 | 879 | } |
880 | ||
881 | void | |
3b13a8fd | 882 | clientReplyContext::purgeFoundHead(StoreEntry *newEntry) |
e6ccf245 | 883 | { |
884 | if (newEntry->isNull()) | |
62e76326 | 885 | purgeDoMissPurge(); |
e6ccf245 | 886 | else |
62e76326 | 887 | purgeFoundObject (newEntry); |
e6ccf245 | 888 | } |
62e76326 | 889 | |
e6ccf245 | 890 | void |
3b13a8fd | 891 | clientReplyContext::purgeFoundObject(StoreEntry *entry) |
e6ccf245 | 892 | { |
893 | assert (entry && !entry->isNull()); | |
e4b9a2f0 | 894 | |
895 | if (EBIT_TEST(entry->flags, ENTRY_SPECIAL)) { | |
896 | http->logType = LOG_TCP_DENIED; | |
955394ce | 897 | ErrorState *err = clientBuildError(ERR_ACCESS_DENIED, Http::scForbidden, NULL, |
73c36fd9 | 898 | http->getConn()->clientConnection->remote, http->request); |
e4b9a2f0 | 899 | startError(err); |
c877c0bc | 900 | return; // XXX: leaking unused entry if some store does not keep it |
e4b9a2f0 | 901 | } |
902 | ||
8bcf08e0 | 903 | StoreIOBuffer localTempBuffer; |
62e76326 | 904 | /* Swap in the metadata */ |
86a2f789 | 905 | http->storeEntry(entry); |
34266cde | 906 | |
1bfe9ade | 907 | http->storeEntry()->lock("clientReplyContext::purgeFoundObject"); |
c877c0bc AR |
908 | http->storeEntry()->createMemObject(storeId(), http->log_uri, |
909 | http->request->method); | |
34266cde | 910 | |
86a2f789 | 911 | sc = storeClientListAdd(http->storeEntry(), this); |
34266cde | 912 | |
62e76326 | 913 | http->logType = LOG_TCP_HIT; |
34266cde | 914 | |
62e76326 | 915 | reqofs = 0; |
34266cde | 916 | |
8bcf08e0 | 917 | localTempBuffer.offset = http->out.offset; |
34266cde | 918 | |
8bcf08e0 | 919 | localTempBuffer.length = next()->readBuffer.length; |
34266cde | 920 | |
8bcf08e0 | 921 | localTempBuffer.data = next()->readBuffer.data; |
34266cde | 922 | |
86a2f789 | 923 | storeClientCopy(sc, http->storeEntry(), |
8bcf08e0 | 924 | localTempBuffer, CacheHit, this); |
e6ccf245 | 925 | } |
926 | ||
927 | void | |
928 | clientReplyContext::purgeRequest() | |
edce4d98 | 929 | { |
bf8fe701 | 930 | debugs(88, 3, "Config2.onoff.enable_purge = " << |
931 | Config2.onoff.enable_purge); | |
62e76326 | 932 | |
edce4d98 | 933 | if (!Config2.onoff.enable_purge) { |
62e76326 | 934 | http->logType = LOG_TCP_DENIED; |
955394ce | 935 | ErrorState *err = clientBuildError(ERR_ACCESS_DENIED, Http::scForbidden, NULL, http->getConn()->clientConnection->remote, http->request); |
0655fa4d | 936 | startError(err); |
62e76326 | 937 | return; |
edce4d98 | 938 | } |
62e76326 | 939 | |
edce4d98 | 940 | /* Release both IP cache */ |
cc192b50 | 941 | ipcacheInvalidate(http->request->GetHost()); |
edce4d98 | 942 | |
e6ccf245 | 943 | if (!http->flags.purging) |
62e76326 | 944 | purgeRequestFindObjectToPurge(); |
e6ccf245 | 945 | else |
62e76326 | 946 | purgeDoMissPurge(); |
e6ccf245 | 947 | } |
948 | ||
949 | void | |
950 | clientReplyContext::purgeDoMissPurge() | |
951 | { | |
29b8d8d6 | 952 | http->logType = LOG_TCP_MISS; |
e6ccf245 | 953 | lookingforstore = 3; |
c2a7cefd | 954 | StoreEntry::getPublicByRequestMethod(this,http->request, Http::METHOD_GET); |
e6ccf245 | 955 | } |
956 | ||
957 | void | |
3b13a8fd | 958 | clientReplyContext::purgeDoPurgeGet(StoreEntry *newEntry) |
e6ccf245 | 959 | { |
960 | assert (newEntry); | |
961 | /* Move to new() when that is created */ | |
955394ce | 962 | purgeStatus = Http::scNotFound; |
e6ccf245 | 963 | |
964 | if (!newEntry->isNull()) { | |
62e76326 | 965 | /* Release the cached URI */ |
bf8fe701 | 966 | debugs(88, 4, "clientPurgeRequest: GET '" << newEntry->url() << "'" ); |
8dceeee3 | 967 | #if USE_HTCP |
c2a7cefd | 968 | neighborsHtcpClear(newEntry, NULL, http->request, HttpRequestMethod(Http::METHOD_GET), HTCP_CLR_PURGE); |
8dceeee3 | 969 | #endif |
5f33b71d | 970 | newEntry->release(); |
955394ce | 971 | purgeStatus = Http::scOkay; |
edce4d98 | 972 | } |
62e76326 | 973 | |
e6ccf245 | 974 | lookingforstore = 4; |
c2a7cefd | 975 | StoreEntry::getPublicByRequestMethod(this, http->request, Http::METHOD_HEAD); |
e6ccf245 | 976 | } |
977 | ||
978 | void | |
3b13a8fd | 979 | clientReplyContext::purgeDoPurgeHead(StoreEntry *newEntry) |
e6ccf245 | 980 | { |
4fc0ac76 | 981 | if (newEntry && !newEntry->isNull()) { |
bf8fe701 | 982 | debugs(88, 4, "clientPurgeRequest: HEAD '" << newEntry->url() << "'" ); |
8dceeee3 | 983 | #if USE_HTCP |
c2a7cefd | 984 | neighborsHtcpClear(newEntry, NULL, http->request, HttpRequestMethod(Http::METHOD_HEAD), HTCP_CLR_PURGE); |
8dceeee3 | 985 | #endif |
5f33b71d | 986 | newEntry->release(); |
955394ce | 987 | purgeStatus = Http::scOkay; |
edce4d98 | 988 | } |
62e76326 | 989 | |
edce4d98 | 990 | /* And for Vary, release the base URI if none of the headers was included in the request */ |
62e76326 | 991 | |
edce4d98 | 992 | if (http->request->vary_headers |
62e76326 | 993 | && !strstr(http->request->vary_headers, "=")) { |
c2a7cefd | 994 | StoreEntry *entry = storeGetPublic(urlCanonical(http->request), Http::METHOD_GET); |
62e76326 | 995 | |
996 | if (entry) { | |
bf8fe701 | 997 | debugs(88, 4, "clientPurgeRequest: Vary GET '" << entry->url() << "'" ); |
8dceeee3 | 998 | #if USE_HTCP |
c2a7cefd | 999 | neighborsHtcpClear(entry, NULL, http->request, HttpRequestMethod(Http::METHOD_GET), HTCP_CLR_PURGE); |
8dceeee3 | 1000 | #endif |
5f33b71d | 1001 | entry->release(); |
955394ce | 1002 | purgeStatus = Http::scOkay; |
62e76326 | 1003 | } |
1004 | ||
c2a7cefd | 1005 | entry = storeGetPublic(urlCanonical(http->request), Http::METHOD_HEAD); |
62e76326 | 1006 | |
1007 | if (entry) { | |
bf8fe701 | 1008 | debugs(88, 4, "clientPurgeRequest: Vary HEAD '" << entry->url() << "'" ); |
8dceeee3 | 1009 | #if USE_HTCP |
c2a7cefd | 1010 | neighborsHtcpClear(entry, NULL, http->request, HttpRequestMethod(Http::METHOD_HEAD), HTCP_CLR_PURGE); |
8dceeee3 | 1011 | #endif |
5f33b71d | 1012 | entry->release(); |
955394ce | 1013 | purgeStatus = Http::scOkay; |
62e76326 | 1014 | } |
edce4d98 | 1015 | } |
62e76326 | 1016 | |
edce4d98 | 1017 | /* |
1018 | * Make a new entry to hold the reply to be written | |
1019 | * to the client. | |
1020 | */ | |
528b2c61 | 1021 | /* FIXME: This doesn't need to go through the store. Simply |
1022 | * push down the client chain | |
1023 | */ | |
f206b652 | 1024 | createStoreEntry(http->request->method, RequestFlags()); |
62e76326 | 1025 | |
0655fa4d | 1026 | triggerInitialStoreRead(); |
62e76326 | 1027 | |
7dc5f514 | 1028 | HttpReply *rep = new HttpReply; |
11992b6f | 1029 | rep->setHeaders(purgeStatus, NULL, NULL, 0, 0, -1); |
7dc5f514 | 1030 | http->storeEntry()->replaceHttpReply(rep); |
86a2f789 | 1031 | http->storeEntry()->complete(); |
edce4d98 | 1032 | } |
1033 | ||
1034 | void | |
0655fa4d | 1035 | clientReplyContext::traceReply(clientStreamNode * node) |
edce4d98 | 1036 | { |
076df709 | 1037 | clientStreamNode *nextNode = (clientStreamNode *)node->node.next->data; |
8bcf08e0 | 1038 | StoreIOBuffer localTempBuffer; |
f206b652 | 1039 | createStoreEntry(http->request->method, RequestFlags()); |
076df709 FC |
1040 | localTempBuffer.offset = nextNode->readBuffer.offset + headers_sz; |
1041 | localTempBuffer.length = nextNode->readBuffer.length; | |
1042 | localTempBuffer.data = nextNode->readBuffer.data; | |
86a2f789 | 1043 | storeClientCopy(sc, http->storeEntry(), |
8bcf08e0 | 1044 | localTempBuffer, SendMoreData, this); |
d88e3c49 | 1045 | http->storeEntry()->releaseRequest(); |
3900307b | 1046 | http->storeEntry()->buffer(); |
7dc5f514 | 1047 | HttpReply *rep = new HttpReply; |
955394ce | 1048 | rep->setHeaders(Http::scOkay, NULL, "text/plain", http->request->prefixLen(), 0, squid_curtime); |
db237875 | 1049 | http->storeEntry()->replaceHttpReply(rep); |
5cafad19 | 1050 | http->request->swapOut(http->storeEntry()); |
86a2f789 | 1051 | http->storeEntry()->complete(); |
edce4d98 | 1052 | } |
1053 | ||
1054 | #define SENDING_BODY 0 | |
1055 | #define SENDING_HDRSONLY 1 | |
1056 | int | |
0655fa4d | 1057 | clientReplyContext::checkTransferDone() |
edce4d98 | 1058 | { |
86a2f789 | 1059 | StoreEntry *entry = http->storeEntry(); |
62e76326 | 1060 | |
edce4d98 | 1061 | if (entry == NULL) |
62e76326 | 1062 | return 0; |
1063 | ||
1064 | /* | |
edce4d98 | 1065 | * For now, 'done_copying' is used for special cases like |
1066 | * Range and HEAD requests. | |
1067 | */ | |
0655fa4d | 1068 | if (http->flags.done_copying) |
62e76326 | 1069 | return 1; |
1070 | ||
450fe1cb | 1071 | if (http->request->flags.chunkedReply && !flags.complete) { |
4ad60609 AR |
1072 | // last-chunk was not sent |
1073 | return 0; | |
1074 | } | |
1075 | ||
edce4d98 | 1076 | /* |
1077 | * Handle STORE_OK objects. | |
1078 | * objectLen(entry) will be set proprely. | |
26ac0430 | 1079 | * RC: Does objectLen(entry) include the Headers? |
0e3be1ea | 1080 | * RC: Yes. |
edce4d98 | 1081 | */ |
1082 | if (entry->store_status == STORE_OK) { | |
0655fa4d | 1083 | return storeOKTransferDone(); |
e39b9382 | 1084 | } else { |
0655fa4d | 1085 | return storeNotOKTransferDone(); |
edce4d98 | 1086 | } |
e39b9382 | 1087 | } |
1088 | ||
1089 | int | |
1090 | clientReplyContext::storeOKTransferDone() const | |
1091 | { | |
aa1a691e AR |
1092 | assert(http->storeEntry()->objectLen() >= 0); |
1093 | assert(http->storeEntry()->objectLen() >= headers_sz); | |
47f6e231 | 1094 | if (http->out.offset >= http->storeEntry()->objectLen() - headers_sz) { |
26ac0430 AJ |
1095 | debugs(88,3,HERE << "storeOKTransferDone " << |
1096 | " out.offset=" << http->out.offset << | |
1097 | " objectLen()=" << http->storeEntry()->objectLen() << | |
1098 | " headers_sz=" << headers_sz); | |
62e76326 | 1099 | return 1; |
47f6e231 | 1100 | } |
62e76326 | 1101 | |
e39b9382 | 1102 | return 0; |
1103 | } | |
1104 | ||
1105 | int | |
1106 | clientReplyContext::storeNotOKTransferDone() const | |
1107 | { | |
edce4d98 | 1108 | /* |
1109 | * Now, handle STORE_PENDING objects | |
1110 | */ | |
86a2f789 | 1111 | MemObject *mem = http->storeEntry()->mem_obj; |
edce4d98 | 1112 | assert(mem != NULL); |
1113 | assert(http->request != NULL); | |
0e3be1ea | 1114 | /* mem->reply was wrong because it uses the UPSTREAM header length!!! */ |
8bcf08e0 | 1115 | HttpReply const *curReply = mem->getReply(); |
62e76326 | 1116 | |
e39b9382 | 1117 | if (headers_sz == 0) |
62e76326 | 1118 | /* haven't found end of headers yet */ |
1119 | return 0; | |
e39b9382 | 1120 | |
edce4d98 | 1121 | /* |
1122 | * Figure out how much data we are supposed to send. | |
1123 | * If we are sending a body and we don't have a content-length, | |
1124 | * then we must wait for the object to become STORE_OK. | |
1125 | */ | |
8bcf08e0 | 1126 | if (curReply->content_length < 0) |
62e76326 | 1127 | return 0; |
e39b9382 | 1128 | |
8bcf08e0 | 1129 | int64_t expectedLength = curReply->content_length + http->out.headers_sz; |
62e76326 | 1130 | |
e39b9382 | 1131 | if (http->out.size < expectedLength) |
62e76326 | 1132 | return 0; |
47f6e231 | 1133 | else { |
26ac0430 AJ |
1134 | debugs(88,3,HERE << "storeNotOKTransferDone " << |
1135 | " out.size=" << http->out.size << | |
1136 | " expectedLength=" << expectedLength); | |
62e76326 | 1137 | return 1; |
47f6e231 | 1138 | } |
edce4d98 | 1139 | } |
1140 | ||
edce4d98 | 1141 | /* A write has completed, what is the next status based on the |
1142 | * canonical request data? | |
1143 | * 1 something is wrong | |
1144 | * 0 nothing is wrong. | |
1145 | * | |
1146 | */ | |
1147 | int | |
59a1efb2 | 1148 | clientHttpRequestStatus(int fd, ClientHttpRequest const *http) |
edce4d98 | 1149 | { |
062f7f4e FC |
1150 | #if SIZEOF_INT64_T == 4 |
1151 | if (http->out.size > 0x7FFF0000) { | |
e0236918 FC |
1152 | debugs(88, DBG_IMPORTANT, "WARNING: closing FD " << fd << " to prevent out.size counter overflow"); |
1153 | debugs(88, DBG_IMPORTANT, "\tclient " << http->getConn()->peer); | |
1154 | debugs(88, DBG_IMPORTANT, "\treceived " << http->out.size << " bytes"); | |
1155 | debugs(88, DBG_IMPORTANT, "\tURI " << http->log_uri); | |
062f7f4e FC |
1156 | return 1; |
1157 | } | |
1158 | ||
1159 | if (http->out.offset > 0x7FFF0000) { | |
e0236918 FC |
1160 | debugs(88, DBG_IMPORTANT, "WARNING: closing FD " << fd < " to prevent out.offset counter overflow"); |
1161 | debugs(88, DBG_IMPORTANT, "\tclient " << http->getConn()->peer); | |
1162 | debugs(88, DBG_IMPORTANT, "\treceived " << http->out.size << " bytes, offset " << http->out.offset); | |
1163 | debugs(88, DBG_IMPORTANT, "\tURI " << http->log_uri); | |
062f7f4e FC |
1164 | return 1; |
1165 | } | |
1166 | ||
1167 | #endif | |
edce4d98 | 1168 | return 0; |
1169 | } | |
1170 | ||
62e76326 | 1171 | /* Preconditions: |
edce4d98 | 1172 | * *http is a valid structure. |
1173 | * fd is either -1, or an open fd. | |
1174 | * | |
1175 | * TODO: enumify this | |
1176 | * | |
1177 | * This function is used by any http request sink, to determine the status | |
1178 | * of the object. | |
1179 | */ | |
1180 | clientStream_status_t | |
59a1efb2 | 1181 | clientReplyStatus(clientStreamNode * aNode, ClientHttpRequest * http) |
edce4d98 | 1182 | { |
0655fa4d | 1183 | clientReplyContext *context = dynamic_cast<clientReplyContext *>(aNode->data.getRaw()); |
1184 | assert (context); | |
1185 | assert (context->http == http); | |
1186 | return context->replyStatus(); | |
1187 | } | |
1188 | ||
1189 | clientStream_status_t | |
1190 | clientReplyContext::replyStatus() | |
1191 | { | |
edce4d98 | 1192 | int done; |
1193 | /* Here because lower nodes don't need it */ | |
62e76326 | 1194 | |
3daaed1a | 1195 | if (http->storeEntry() == NULL) { |
1196 | debugs(88, 5, "clientReplyStatus: no storeEntry"); | |
f53969cc | 1197 | return STREAM_FAILED; /* yuck, but what can we do? */ |
3daaed1a | 1198 | } |
62e76326 | 1199 | |
3daaed1a | 1200 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) { |
62e76326 | 1201 | /* TODO: Could upstream read errors (result.flags.error) be |
1202 | * lost, and result in undersize requests being considered | |
1203 | * complete. Should we tcp reset such connections ? | |
1204 | */ | |
3daaed1a | 1205 | debugs(88, 5, "clientReplyStatus: aborted storeEntry"); |
62e76326 | 1206 | return STREAM_FAILED; |
3daaed1a | 1207 | } |
62e76326 | 1208 | |
0655fa4d | 1209 | if ((done = checkTransferDone()) != 0 || flags.complete) { |
1bfe9ade | 1210 | debugs(88, 5, "clientReplyStatus: transfer is DONE: " << done << flags.complete); |
62e76326 | 1211 | /* Ok we're finished, but how? */ |
1212 | ||
4ad60609 AR |
1213 | const int64_t expectedBodySize = |
1214 | http->storeEntry()->getReply()->bodySize(http->request->method); | |
450fe1cb | 1215 | if (!http->request->flags.proxyKeepalive && expectedBodySize < 0) { |
bf8fe701 | 1216 | debugs(88, 5, "clientReplyStatus: closing, content_length < 0"); |
62e76326 | 1217 | return STREAM_FAILED; |
1218 | } | |
1219 | ||
1220 | if (!done) { | |
bf8fe701 | 1221 | debugs(88, 5, "clientReplyStatus: closing, !done, but read 0 bytes"); |
62e76326 | 1222 | return STREAM_FAILED; |
1223 | } | |
1224 | ||
4ad60609 | 1225 | if (expectedBodySize >= 0 && !http->gotEnough()) { |
bf8fe701 | 1226 | debugs(88, 5, "clientReplyStatus: client didn't get all it expected"); |
62e76326 | 1227 | return STREAM_UNPLANNED_COMPLETE; |
1228 | } | |
1229 | ||
ca6d5de2 AR |
1230 | debugs(88, 5, "clientReplyStatus: stream complete; keepalive=" << |
1231 | http->request->flags.proxyKeepalive); | |
1232 | return STREAM_COMPLETE; | |
edce4d98 | 1233 | } |
62e76326 | 1234 | |
16611143 | 1235 | // XXX: Should this be checked earlier? We could return above w/o checking. |
1236 | if (reply->receivedBodyTooLarge(*http->request, http->out.offset - 4096)) { | |
b51aec66 | 1237 | /* 4096 is a margin for the HTTP headers included in out.offset */ |
bf8fe701 | 1238 | debugs(88, 5, "clientReplyStatus: client reply body is too large"); |
62e76326 | 1239 | return STREAM_FAILED; |
0e3be1ea | 1240 | } |
62e76326 | 1241 | |
edce4d98 | 1242 | return STREAM_NONE; |
1243 | } | |
1244 | ||
62e76326 | 1245 | /* Responses with no body will not have a content-type header, |
edce4d98 | 1246 | * which breaks the rep_mime_type acl, which |
1247 | * coincidentally, is the most common acl for reply access lists. | |
1248 | * A better long term fix for this is to allow acl matchs on the various | |
26ac0430 AJ |
1249 | * status codes, and then supply a default ruleset that puts these |
1250 | * codes before any user defines access entries. That way the user | |
edce4d98 | 1251 | * can choose to block these responses where appropriate, but won't get |
1252 | * mysterious breakages. | |
1253 | */ | |
0655fa4d | 1254 | bool |
955394ce | 1255 | clientReplyContext::alwaysAllowResponse(Http::StatusCode sline) const |
edce4d98 | 1256 | { |
4ef4b952 | 1257 | bool result; |
1258 | ||
edce4d98 | 1259 | switch (sline) { |
62e76326 | 1260 | |
955394ce | 1261 | case Http::scContinue: |
62e76326 | 1262 | |
955394ce | 1263 | case Http::scSwitchingProtocols: |
62e76326 | 1264 | |
955394ce | 1265 | case Http::scProcessing: |
62e76326 | 1266 | |
955394ce | 1267 | case Http::scNoContent: |
62e76326 | 1268 | |
955394ce | 1269 | case Http::scNotModified: |
4ef4b952 | 1270 | result = true; |
62e76326 | 1271 | break; |
1272 | ||
edce4d98 | 1273 | default: |
4ef4b952 | 1274 | result = false; |
edce4d98 | 1275 | } |
4ef4b952 | 1276 | |
1277 | return result; | |
edce4d98 | 1278 | } |
1279 | ||
a5c8d64d AJ |
1280 | /** |
1281 | * Generate the reply headers sent to client. | |
1282 | * | |
1283 | * Filters out unwanted entries and hop-by-hop from original reply header | |
1284 | * then adds extra entries if we have more info than origin server | |
1285 | * then adds Squid specific entries | |
edce4d98 | 1286 | */ |
0655fa4d | 1287 | void |
1288 | clientReplyContext::buildReplyHeader() | |
edce4d98 | 1289 | { |
7dc5f514 | 1290 | HttpHeader *hdr = &reply->header; |
c8be6d7b | 1291 | int is_hit = logTypeIsATcpHit(http->logType); |
190154cf | 1292 | HttpRequest *request = http->request; |
edce4d98 | 1293 | #if DONT_FILTER_THESE |
1294 | /* but you might want to if you run Squid as an HTTP accelerator */ | |
a9925b40 | 1295 | /* hdr->delById(HDR_ACCEPT_RANGES); */ |
1296 | hdr->delById(HDR_ETAG); | |
edce4d98 | 1297 | #endif |
62e76326 | 1298 | |
edce4d98 | 1299 | if (is_hit) |
a9925b40 | 1300 | hdr->delById(HDR_SET_COOKIE); |
f89d4012 | 1301 | // TODO: RFC 2965 : Must honour Cache-Control: no-cache="set-cookie2" and remove header. |
62e76326 | 1302 | |
23c6d7e7 | 1303 | // if there is not configured a peer proxy with login=PASS or login=PASSTHRU option enabled |
dcf3665b | 1304 | // remove the Proxy-Authenticate header |
23c6d7e7 | 1305 | if ( !request->peer_login || (strcmp(request->peer_login,"PASS") != 0 && strcmp(request->peer_login,"PASSTHRU") != 0)) |
26ac0430 | 1306 | reply->header.delById(HDR_PROXY_AUTHENTICATE); |
dcf3665b | 1307 | |
2cdeea82 | 1308 | reply->header.removeHopByHopEntries(); |
62e76326 | 1309 | |
1310 | // if (request->range) | |
7dc5f514 | 1311 | // clientBuildRangeHeader(http, reply); |
a5c8d64d | 1312 | |
edce4d98 | 1313 | /* |
1314 | * Add a estimated Age header on cache hits. | |
1315 | */ | |
1316 | if (is_hit) { | |
62e76326 | 1317 | /* |
1318 | * Remove any existing Age header sent by upstream caches | |
1319 | * (note that the existing header is passed along unmodified | |
1320 | * on cache misses) | |
1321 | */ | |
a9925b40 | 1322 | hdr->delById(HDR_AGE); |
62e76326 | 1323 | /* |
1324 | * This adds the calculated object age. Note that the details of the | |
1325 | * age calculation is performed by adjusting the timestamp in | |
3900307b | 1326 | * StoreEntry::timestampsSet(), not here. |
62e76326 | 1327 | */ |
bbe58ab5 | 1328 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_SPECIAL)) { |
a9925b40 | 1329 | hdr->delById(HDR_DATE); |
1330 | hdr->insertTime(HDR_DATE, squid_curtime); | |
90fa5816 AJ |
1331 | } else if (http->getConn() && http->getConn()->port->actAsOrigin) { |
1332 | // Swap the Date: header to current time if we are simulating an origin | |
fd49b08b A |
1333 | HttpHeaderEntry *h = hdr->findEntry(HDR_DATE); |
1334 | if (h) | |
1335 | hdr->putExt("X-Origin-Date", h->value.termedBuf()); | |
90fa5816 AJ |
1336 | hdr->delById(HDR_DATE); |
1337 | hdr->insertTime(HDR_DATE, squid_curtime); | |
fd49b08b A |
1338 | h = hdr->findEntry(HDR_EXPIRES); |
1339 | if (h && http->storeEntry()->expires >= 0) { | |
1340 | hdr->putExt("X-Origin-Expires", h->value.termedBuf()); | |
1341 | hdr->delById(HDR_EXPIRES); | |
1342 | hdr->insertTime(HDR_EXPIRES, squid_curtime + http->storeEntry()->expires - http->storeEntry()->timestamp); | |
1343 | } | |
90fa5816 AJ |
1344 | if (http->storeEntry()->timestamp <= squid_curtime) { |
1345 | // put X-Cache-Age: instead of Age: | |
fd49b08b | 1346 | char age[64]; |
fe3f0034 | 1347 | snprintf(age, sizeof(age), "%" PRId64, static_cast<int64_t>(squid_curtime - http->storeEntry()->timestamp)); |
fd49b08b A |
1348 | hdr->putExt("X-Cache-Age", age); |
1349 | } | |
a81e7089 | 1350 | } else if (http->storeEntry()->timestamp <= squid_curtime) { |
a9925b40 | 1351 | hdr->putInt(HDR_AGE, |
1352 | squid_curtime - http->storeEntry()->timestamp); | |
62e76326 | 1353 | /* Signal old objects. NB: rfc 2616 is not clear, |
1354 | * by implication, on whether we should do this to all | |
1355 | * responses, or only cache hits. | |
1356 | * 14.46 states it ONLY applys for heuristically caclulated | |
1357 | * freshness values, 13.2.4 doesn't specify the same limitation. | |
1358 | * We interpret RFC 2616 under the combination. | |
1359 | */ | |
1360 | /* TODO: if maxage or s-maxage is present, don't do this */ | |
1361 | ||
86a2f789 | 1362 | if (squid_curtime - http->storeEntry()->timestamp >= 86400) { |
8bcf08e0 FC |
1363 | char tbuf[512]; |
1364 | snprintf (tbuf, sizeof(tbuf), "%s %s %s", | |
62e76326 | 1365 | "113", ThisCache, |
1366 | "This cache hit is still fresh and more than 1 day old"); | |
8bcf08e0 | 1367 | hdr->putStr(HDR_WARNING, tbuf); |
62e76326 | 1368 | } |
1369 | } | |
a5c8d64d | 1370 | } |
528b2c61 | 1371 | |
a5c8d64d AJ |
1372 | /* RFC 2616: Section 14.18 |
1373 | * | |
1374 | * Add a Date: header if missing. | |
1375 | * We have access to a clock therefore are required to amend any shortcoming in servers. | |
1376 | * | |
1377 | * NP: done after Age: to prevent ENTRY_SPECIAL double-handling this header. | |
1378 | */ | |
1379 | if ( !hdr->has(HDR_DATE) ) { | |
f0dedeb5 | 1380 | if (!http->storeEntry()) |
a5c8d64d | 1381 | hdr->insertTime(HDR_DATE, squid_curtime); |
f0dedeb5 AJ |
1382 | else if (http->storeEntry()->timestamp > 0) |
1383 | hdr->insertTime(HDR_DATE, http->storeEntry()->timestamp); | |
1384 | else { | |
d9d98242 | 1385 | debugs(88,DBG_IMPORTANT,"BUG 3279: HTTP reply without Date:"); |
e78ae89a AJ |
1386 | /* dump something useful about the problem */ |
1387 | http->storeEntry()->dump(DBG_IMPORTANT); | |
f0dedeb5 | 1388 | } |
edce4d98 | 1389 | } |
62e76326 | 1390 | |
bcfba8bd | 1391 | // add Warnings required by RFC 2616 if serving a stale hit |
450fe1cb | 1392 | if (http->request->flags.staleIfHit && logTypeIsATcpHit(http->logType)) { |
bcfba8bd | 1393 | hdr->putWarning(110, "Response is stale"); |
450fe1cb | 1394 | if (http->request->flags.needValidation) |
bcfba8bd AR |
1395 | hdr->putWarning(111, "Revalidation failed"); |
1396 | } | |
1397 | ||
0bd9aa82 | 1398 | /* Filter unproxyable authentication types */ |
ddd31ed3 | 1399 | if (http->logType != LOG_TCP_DENIED && |
d67acb4e | 1400 | hdr->has(HDR_WWW_AUTHENTICATE)) { |
62e76326 | 1401 | HttpHeaderPos pos = HttpHeaderInitPos; |
1402 | HttpHeaderEntry *e; | |
1403 | ||
26ac0430 | 1404 | int connection_auth_blocked = 0; |
a9925b40 | 1405 | while ((e = hdr->getEntry(&pos))) { |
d67acb4e | 1406 | if (e->id == HDR_WWW_AUTHENTICATE) { |
5b4117d8 | 1407 | const char *value = e->value.rawBuf(); |
62e76326 | 1408 | |
1409 | if ((strncasecmp(value, "NTLM", 4) == 0 && | |
1410 | (value[4] == '\0' || value[4] == ' ')) | |
1411 | || | |
1412 | (strncasecmp(value, "Negotiate", 9) == 0 && | |
d67acb4e | 1413 | (value[9] == '\0' || value[9] == ' ')) |
26ac0430 AJ |
1414 | || |
1415 | (strncasecmp(value, "Kerberos", 8) == 0 && | |
1416 | (value[8] == '\0' || value[8] == ' '))) { | |
450fe1cb | 1417 | if (request->flags.connectionAuthDisabled) { |
26ac0430 | 1418 | hdr->delAt(pos, connection_auth_blocked); |
d67acb4e AJ |
1419 | continue; |
1420 | } | |
e857372a | 1421 | request->flags.mustKeepalive = true; |
45e5102d | 1422 | if (!request->flags.accelerated && !request->flags.intercepted) { |
d67acb4e | 1423 | httpHeaderPutStrf(hdr, HDR_PROXY_SUPPORT, "Session-Based-Authentication"); |
26ac0430 | 1424 | /* |
f7a2e5a5 | 1425 | We send "Connection: Proxy-Support" header to mark |
26ac0430 AJ |
1426 | Proxy-Support as a hop-by-hop header for intermediaries that do not |
1427 | understand the semantics of this header. The RFC should have included | |
1428 | this recommendation. | |
1429 | */ | |
d67acb4e AJ |
1430 | httpHeaderPutStrf(hdr, HDR_CONNECTION, "Proxy-support"); |
1431 | } | |
1432 | break; | |
26ac0430 | 1433 | } |
62e76326 | 1434 | } |
1435 | } | |
d67acb4e AJ |
1436 | |
1437 | if (connection_auth_blocked) | |
ba9fb01d | 1438 | hdr->refreshMask(); |
0bd9aa82 | 1439 | } |
62e76326 | 1440 | |
2f1431ea | 1441 | #if USE_AUTH |
edce4d98 | 1442 | /* Handle authentication headers */ |
26ac0430 | 1443 | if (http->logType == LOG_TCP_DENIED && |
9b769c67 AJ |
1444 | ( reply->sline.status() == Http::scProxyAuthenticationRequired || |
1445 | reply->sline.status() == Http::scUnauthorized) | |
26ac0430 AJ |
1446 | ) { |
1447 | /* Add authentication header */ | |
1448 | /*! \todo alter errorstate to be accel on|off aware. The 0 on the next line | |
1449 | * depends on authenticate behaviour: all schemes to date send no extra | |
1450 | * data on 407/401 responses, and do not check the accel state on 401/407 | |
1451 | * responses | |
1452 | */ | |
1453 | authenticateFixHeader(reply, request->auth_user_request, request, 0, 1); | |
a33a428a AJ |
1454 | } else if (request->auth_user_request != NULL) |
1455 | authenticateFixHeader(reply, request->auth_user_request, request, http->flags.accel, 0); | |
2f1431ea | 1456 | #endif |
62e76326 | 1457 | |
edce4d98 | 1458 | /* Append X-Cache */ |
1459 | httpHeaderPutStrf(hdr, HDR_X_CACHE, "%s from %s", | |
62e76326 | 1460 | is_hit ? "HIT" : "MISS", getMyHostname()); |
1461 | ||
edce4d98 | 1462 | #if USE_CACHE_DIGESTS |
1463 | /* Append X-Cache-Lookup: -- temporary hack, to be removed @?@ @?@ */ | |
1464 | httpHeaderPutStrf(hdr, HDR_X_CACHE_LOOKUP, "%s from %s:%d", | |
0655fa4d | 1465 | lookup_type ? lookup_type : "NONE", |
62e76326 | 1466 | getMyHostname(), getMyPort()); |
1467 | ||
edce4d98 | 1468 | #endif |
62e76326 | 1469 | |
45e5102d | 1470 | const bool maySendChunkedReply = !request->multipartRangeRequest() && |
f7701e72 | 1471 | reply->sline.protocol == AnyP::PROTO_HTTP && // response is HTTP |
2592bc70 | 1472 | (request->http_ver >= Http::ProtocolVersion(1,1)); |
4ad60609 | 1473 | |
f529bb20 | 1474 | /* Check whether we should send keep-alive */ |
9b769c67 | 1475 | if (!Config.onoff.error_pconns && reply->sline.status() >= 400 && !request->flags.mustKeepalive) { |
bf8fe701 | 1476 | debugs(33, 3, "clientBuildReplyHeader: Error, don't keep-alive"); |
e857372a | 1477 | request->flags.proxyKeepalive = false; |
450fe1cb | 1478 | } else if (!Config.onoff.client_pconns && !request->flags.mustKeepalive) { |
17b57873 | 1479 | debugs(33, 2, "clientBuildReplyHeader: Connection Keep-Alive not requested by admin or client"); |
e857372a | 1480 | request->flags.proxyKeepalive = false; |
450fe1cb | 1481 | } else if (request->flags.proxyKeepalive && shutting_down) { |
f529bb20 | 1482 | debugs(88, 3, "clientBuildReplyHeader: Shutting down, don't keep-alive."); |
e857372a | 1483 | request->flags.proxyKeepalive = false; |
450fe1cb | 1484 | } else if (request->flags.connectionAuth && !reply->keep_alive) { |
26ac0430 | 1485 | debugs(33, 2, "clientBuildReplyHeader: Connection oriented auth but server side non-persistent"); |
e857372a | 1486 | request->flags.proxyKeepalive = false; |
4ad60609 | 1487 | } else if (reply->bodySize(request->method) < 0 && !maySendChunkedReply) { |
17b57873 | 1488 | debugs(88, 3, "clientBuildReplyHeader: can't keep-alive, unknown body size" ); |
e857372a | 1489 | request->flags.proxyKeepalive = false; |
450fe1cb | 1490 | } else if (fdUsageHigh()&& !request->flags.mustKeepalive) { |
17b57873 | 1491 | debugs(88, 3, "clientBuildReplyHeader: Not many unused FDs, can't keep-alive"); |
e857372a | 1492 | request->flags.proxyKeepalive = false; |
450fe1cb | 1493 | } else if (request->flags.sslBumped && !reply->persistent()) { |
49f1c7f7 AR |
1494 | // We do not really have to close, but we pretend we are a tunnel. |
1495 | debugs(88, 3, "clientBuildReplyHeader: bumped reply forces close"); | |
e857372a | 1496 | request->flags.proxyKeepalive = false; |
693cb033 CT |
1497 | } else if (request->pinnedConnection() && !reply->persistent()) { |
1498 | // The peer wants to close the pinned connection | |
1499 | debugs(88, 3, "pinned reply forces close"); | |
e857372a | 1500 | request->flags.proxyKeepalive = false; |
c5c06f02 CT |
1501 | } else if (http->getConn()) { |
1502 | ConnStateData * conn = http->getConn(); | |
1503 | if (!Comm::IsConnOpen(conn->port->listenConn)) { | |
1504 | // The listening port closed because of a reconfigure | |
1505 | debugs(88, 3, "listening port closed"); | |
1506 | request->flags.proxyKeepalive = false; | |
1507 | } else if (Config.Timeout.pconnLifetime && conn->clientConnection->lifeTime() > Config.Timeout.pconnLifetime && conn->getConcurrentRequestCount() <= 1) { | |
1508 | // The persistent connection lifetime exceeded and we are the last parsed request | |
1509 | debugs(88, 3, "persistent connection lifetime exceeded"); | |
1510 | request->flags.proxyKeepalive = false; | |
1511 | } | |
17b57873 | 1512 | } |
d67acb4e | 1513 | |
4ad60609 AR |
1514 | // Decide if we send chunked reply |
1515 | if (maySendChunkedReply && | |
450fe1cb | 1516 | request->flags.proxyKeepalive && |
4cb2536f | 1517 | reply->bodySize(request->method) < 0) { |
4ad60609 | 1518 | debugs(88, 3, "clientBuildReplyHeader: chunked reply"); |
e857372a | 1519 | request->flags.chunkedReply = true; |
4ad60609 AR |
1520 | hdr->putStr(HDR_TRANSFER_ENCODING, "chunked"); |
1521 | } | |
f529bb20 | 1522 | |
4dea3fdd | 1523 | /* Append VIA */ |
92caea77 | 1524 | if (Config.onoff.via) { |
62e76326 | 1525 | LOCAL_ARRAY(char, bbuf, MAX_URL + 32); |
30abd221 | 1526 | String strVia; |
26ac0430 | 1527 | hdr->getList(HDR_VIA, &strVia); |
88331887 | 1528 | snprintf(bbuf, MAX_URL + 32, "%d.%d %s", |
7dc5f514 | 1529 | reply->sline.version.major, |
1530 | reply->sline.version.minor, | |
62e76326 | 1531 | ThisCache); |
1532 | strListAdd(&strVia, bbuf, ','); | |
a9925b40 | 1533 | hdr->delById(HDR_VIA); |
5b4117d8 | 1534 | hdr->putStr(HDR_VIA, strVia.termedBuf()); |
c8be6d7b | 1535 | } |
95e78500 | 1536 | /* Signal keep-alive or close explicitly */ |
450fe1cb | 1537 | hdr->putStr(HDR_CONNECTION, request->flags.proxyKeepalive ? "keep-alive" : "close"); |
62e76326 | 1538 | |
edce4d98 | 1539 | #if ADD_X_REQUEST_URI |
1540 | /* | |
1541 | * Knowing the URI of the request is useful when debugging persistent | |
1542 | * connections in a client; we cannot guarantee the order of http headers, | |
1543 | * but X-Request-URI is likely to be the very last header to ease use from a | |
1544 | * debugger [hdr->entries.count-1]. | |
1545 | */ | |
a9925b40 | 1546 | hdr->putStr(HDR_X_REQUEST_URI, |
1547 | http->memOjbect()->url ? http->memObject()->url : http->uri); | |
62e76326 | 1548 | |
edce4d98 | 1549 | #endif |
62e76326 | 1550 | |
45cca89d AJ |
1551 | /* Surrogate-Control requires Surrogate-Capability from upstream to pass on */ |
1552 | if ( hdr->has(HDR_SURROGATE_CONTROL) ) { | |
1553 | if (!request->header.has(HDR_SURROGATE_CAPABILITY)) { | |
1554 | hdr->delById(HDR_SURROGATE_CONTROL); | |
1555 | } | |
1556 | /* TODO: else case: drop any controls intended specifically for our surrogate ID */ | |
1557 | } | |
1558 | ||
8c01ada0 | 1559 | httpHdrMangleList(hdr, request, ROR_REPLY); |
edce4d98 | 1560 | } |
1561 | ||
0655fa4d | 1562 | void |
b297bcd0 | 1563 | clientReplyContext::cloneReply() |
edce4d98 | 1564 | { |
7dc5f514 | 1565 | assert(reply == NULL); |
0655fa4d | 1566 | |
b248c2a3 AJ |
1567 | reply = http->storeEntry()->getReply()->clone(); |
1568 | HTTPMSGLOCK(reply); | |
7dc5f514 | 1569 | |
0c3d3f65 | 1570 | if (reply->sline.protocol == AnyP::PROTO_HTTP) { |
2592bc70 AJ |
1571 | /* RFC 2616 requires us to advertise our version (but only on real HTTP traffic) */ |
1572 | reply->sline.version = Http::ProtocolVersion(); | |
e77d7ef0 | 1573 | } |
0655fa4d | 1574 | |
1575 | /* do header conversions */ | |
1576 | buildReplyHeader(); | |
edce4d98 | 1577 | } |
1578 | ||
7681a3b9 AR |
1579 | /// Safely disposes of an entry pointing to a cache hit that we do not want. |
1580 | /// We cannot just ignore the entry because it may be locking or otherwise | |
1581 | /// holding an associated cache resource of some sort. | |
1582 | void | |
1583 | clientReplyContext::forgetHit() | |
1584 | { | |
1585 | StoreEntry *e = http->storeEntry(); | |
1586 | assert(e); // or we are not dealing with a hit | |
1587 | // We probably have not locked the entry earlier, unfortunately. We lock it | |
1588 | // now so that we can unlock two lines later (and trigger cleanup). | |
1589 | // Ideally, ClientHttpRequest::storeEntry() should lock/unlock, but it is | |
1590 | // used so inconsistently that simply adding locking there leads to bugs. | |
1bfe9ade | 1591 | e->lock("clientReplyContext::forgetHit"); |
7681a3b9 | 1592 | http->storeEntry(NULL); |
1bfe9ade | 1593 | e->unlock("clientReplyContext::forgetHit"); // may delete e |
7681a3b9 AR |
1594 | } |
1595 | ||
e6ccf245 | 1596 | void |
1597 | clientReplyContext::identifyStoreObject() | |
edce4d98 | 1598 | { |
190154cf | 1599 | HttpRequest *r = http->request; |
62e76326 | 1600 | |
45e5102d | 1601 | if (r->flags.cachable || r->flags.internal) { |
62e76326 | 1602 | lookingforstore = 5; |
1603 | StoreEntry::getPublicByRequest (this, r); | |
559da936 | 1604 | } else { |
62e76326 | 1605 | identifyFoundObject (NullStoreEntry::getInstance()); |
559da936 | 1606 | } |
e6ccf245 | 1607 | } |
1608 | ||
7d5f62a4 AJ |
1609 | /** |
1610 | * Check state of the current StoreEntry object. | |
1611 | * to see if we can determine the final status of the request. | |
1612 | */ | |
e6ccf245 | 1613 | void |
1614 | clientReplyContext::identifyFoundObject(StoreEntry *newEntry) | |
1615 | { | |
1616 | StoreEntry *e = newEntry; | |
190154cf | 1617 | HttpRequest *r = http->request; |
62e76326 | 1618 | |
d85b8894 | 1619 | /** \li If the entry received isNull() then we ignore it. */ |
e6ccf245 | 1620 | if (e->isNull()) { |
86a2f789 | 1621 | http->storeEntry(NULL); |
e6ccf245 | 1622 | } else { |
86a2f789 | 1623 | http->storeEntry(e); |
e6ccf245 | 1624 | } |
62e76326 | 1625 | |
86a2f789 | 1626 | e = http->storeEntry(); |
a12a049a | 1627 | |
7d5f62a4 | 1628 | /* Release IP-cache entries on reload */ |
d85b8894 | 1629 | /** \li If the request has no-cache flag set or some no_cache HACK in operation we |
7d5f62a4 AJ |
1630 | * 'invalidate' the cached IP entries for this request ??? |
1631 | */ | |
17852883 | 1632 | if (r->flags.noCache || r->flags.noCacheHack()) |
cc192b50 | 1633 | ipcacheInvalidateNegative(r->GetHost()); |
45e5102d | 1634 | |
edce4d98 | 1635 | #if USE_CACHE_DIGESTS |
86a2f789 | 1636 | lookup_type = http->storeEntry() ? "HIT" : "MISS"; |
edce4d98 | 1637 | #endif |
62e76326 | 1638 | |
86a2f789 | 1639 | if (NULL == http->storeEntry()) { |
d85b8894 | 1640 | /** \li If no StoreEntry object is current assume this object isn't in the cache set MISS*/ |
e4d13993 | 1641 | debugs(85, 3, "StoreEntry is NULL - MISS"); |
62e76326 | 1642 | http->logType = LOG_TCP_MISS; |
1643 | doGetMoreData(); | |
1644 | return; | |
edce4d98 | 1645 | } |
62e76326 | 1646 | |
edce4d98 | 1647 | if (Config.onoff.offline) { |
d85b8894 | 1648 | /** \li If we are running in offline mode set to HIT */ |
e4d13993 | 1649 | debugs(85, 3, "offline HIT " << *e); |
62e76326 | 1650 | http->logType = LOG_TCP_HIT; |
1651 | doGetMoreData(); | |
1652 | return; | |
edce4d98 | 1653 | } |
62e76326 | 1654 | |
edce4d98 | 1655 | if (http->redirect.status) { |
d85b8894 | 1656 | /** \li If redirection status is True force this to be a MISS */ |
539283df | 1657 | debugs(85, 3, "REDIRECT status forced StoreEntry to NULL (no body on 3XX responses) " << *e); |
7681a3b9 | 1658 | forgetHit(); |
16cd3193 | 1659 | http->logType = LOG_TCP_REDIRECT; |
62e76326 | 1660 | doGetMoreData(); |
1661 | return; | |
edce4d98 | 1662 | } |
62e76326 | 1663 | |
3900307b | 1664 | if (!e->validToSend()) { |
e4d13993 | 1665 | debugs(85, 3, "!storeEntryValidToSend MISS " << *e); |
7681a3b9 | 1666 | forgetHit(); |
62e76326 | 1667 | http->logType = LOG_TCP_MISS; |
1668 | doGetMoreData(); | |
1669 | return; | |
edce4d98 | 1670 | } |
62e76326 | 1671 | |
edce4d98 | 1672 | if (EBIT_TEST(e->flags, ENTRY_SPECIAL)) { |
d85b8894 | 1673 | /* \li Special entries are always hits, no matter what the client says */ |
e4d13993 | 1674 | debugs(85, 3, "ENTRY_SPECIAL HIT " << *e); |
62e76326 | 1675 | http->logType = LOG_TCP_HIT; |
1676 | doGetMoreData(); | |
1677 | return; | |
edce4d98 | 1678 | } |
62e76326 | 1679 | |
450fe1cb | 1680 | if (r->flags.noCache) { |
e4d13993 | 1681 | debugs(85, 3, "no-cache REFRESH MISS " << *e); |
7681a3b9 | 1682 | forgetHit(); |
62e76326 | 1683 | http->logType = LOG_TCP_CLIENT_REFRESH_MISS; |
1684 | doGetMoreData(); | |
1685 | return; | |
edce4d98 | 1686 | } |
62e76326 | 1687 | |
e4d13993 | 1688 | debugs(85, 3, "default HIT " << *e); |
e6ccf245 | 1689 | http->logType = LOG_TCP_HIT; |
1690 | doGetMoreData(); | |
edce4d98 | 1691 | } |
1692 | ||
d85b8894 AJ |
1693 | /** |
1694 | * Request more data from the store for the client Stream | |
edce4d98 | 1695 | * This is *the* entry point to this module. |
1696 | * | |
1697 | * Preconditions: | |
d85b8894 AJ |
1698 | * - This is the head of the list. |
1699 | * - There is at least one more node. | |
1700 | * - Data context is not null | |
edce4d98 | 1701 | */ |
1702 | void | |
59a1efb2 | 1703 | clientGetMoreData(clientStreamNode * aNode, ClientHttpRequest * http) |
edce4d98 | 1704 | { |
edce4d98 | 1705 | /* Test preconditions */ |
e6ccf245 | 1706 | assert(aNode != NULL); |
1707 | assert(cbdataReferenceValid(aNode)); | |
e6ccf245 | 1708 | assert(aNode->node.prev == NULL); |
1709 | assert(aNode->node.next != NULL); | |
0655fa4d | 1710 | clientReplyContext *context = dynamic_cast<clientReplyContext *>(aNode->data.getRaw()); |
1711 | assert (context); | |
edce4d98 | 1712 | assert(context->http == http); |
1713 | ||
0655fa4d | 1714 | clientStreamNode *next = ( clientStreamNode *)aNode->node.next->data; |
62e76326 | 1715 | |
edce4d98 | 1716 | if (!context->ourNode) |
62e76326 | 1717 | context->ourNode = aNode; |
1718 | ||
e6ccf245 | 1719 | /* no cbdatareference, this is only used once, and safely */ |
edce4d98 | 1720 | if (context->flags.storelogiccomplete) { |
62e76326 | 1721 | StoreIOBuffer tempBuffer; |
1722 | tempBuffer.offset = next->readBuffer.offset + context->headers_sz; | |
1723 | tempBuffer.length = next->readBuffer.length; | |
1724 | tempBuffer.data = next->readBuffer.data; | |
1725 | ||
86a2f789 | 1726 | storeClientCopy(context->sc, http->storeEntry(), |
0655fa4d | 1727 | tempBuffer, clientReplyContext::SendMoreData, context); |
62e76326 | 1728 | return; |
edce4d98 | 1729 | } |
62e76326 | 1730 | |
c2a7cefd | 1731 | if (context->http->request->method == Http::METHOD_PURGE) { |
62e76326 | 1732 | context->purgeRequest(); |
1733 | return; | |
edce4d98 | 1734 | } |
62e76326 | 1735 | |
e18b8316 | 1736 | // OPTIONS with Max-Forwards:0 handled in clientProcessRequest() |
fc90edc3 | 1737 | |
c2a7cefd | 1738 | if (context->http->request->method == Http::METHOD_TRACE) { |
34ee6e73 | 1739 | if (context->http->request->header.getInt64(HDR_MAX_FORWARDS) == 0) { |
0655fa4d | 1740 | context->traceReply(aNode); |
62e76326 | 1741 | return; |
1742 | } | |
1743 | ||
1744 | /* continue forwarding, not finished yet. */ | |
1745 | http->logType = LOG_TCP_MISS; | |
1746 | ||
1747 | context->doGetMoreData(); | |
edce4d98 | 1748 | } else |
62e76326 | 1749 | context->identifyStoreObject(); |
e6ccf245 | 1750 | } |
1751 | ||
1752 | void | |
1753 | clientReplyContext::doGetMoreData() | |
1754 | { | |
edce4d98 | 1755 | /* We still have to do store logic processing - vary, cache hit etc */ |
86a2f789 | 1756 | if (http->storeEntry() != NULL) { |
62e76326 | 1757 | /* someone found the object in the cache for us */ |
8bcf08e0 | 1758 | StoreIOBuffer localTempBuffer; |
34266cde | 1759 | |
1bfe9ade | 1760 | http->storeEntry()->lock("clientReplyContext::doGetMoreData"); |
62e76326 | 1761 | |
c877c0bc AR |
1762 | MemObject *mem_obj = http->storeEntry()->makeMemObject(); |
1763 | if (!mem_obj->hasUris()) { | |
62e76326 | 1764 | /* |
1765 | * This if-block exists because we don't want to clobber | |
1766 | * a preexiting mem_obj->method value if the mem_obj | |
1767 | * already exists. For example, when a HEAD request | |
1768 | * is a cache hit for a GET response, we want to keep | |
1769 | * the method as GET. | |
1770 | */ | |
c877c0bc | 1771 | mem_obj->setUris(storeId(), http->log_uri, http->request->method); |
a8a0b1c2 EC |
1772 | /** |
1773 | * Here we can see if the object was | |
1774 | * created using URL or alternative StoreID from helper. | |
1775 | */ | |
c877c0bc | 1776 | debugs(88, 3, "storeId: " << http->storeEntry()->mem_obj->storeId()); |
62e76326 | 1777 | } |
1778 | ||
86a2f789 | 1779 | sc = storeClientListAdd(http->storeEntry(), this); |
9a0a18de | 1780 | #if USE_DELAY_POOLS |
62e76326 | 1781 | sc->setDelayId(DelayId::DelayClient(http)); |
edce4d98 | 1782 | #endif |
62e76326 | 1783 | |
1784 | assert(http->logType == LOG_TCP_HIT); | |
1785 | reqofs = 0; | |
1786 | /* guarantee nothing has been sent yet! */ | |
1787 | assert(http->out.size == 0); | |
1788 | assert(http->out.offset == 0); | |
425de4c8 AJ |
1789 | |
1790 | if (Ip::Qos::TheConfig.isHitTosActive()) { | |
73c36fd9 | 1791 | Ip::Qos::doTosLocalHit(http->getConn()->clientConnection); |
425de4c8 AJ |
1792 | } |
1793 | ||
1794 | if (Ip::Qos::TheConfig.isHitNfmarkActive()) { | |
73c36fd9 | 1795 | Ip::Qos::doNfmarkLocalHit(http->getConn()->clientConnection); |
b86ab75b | 1796 | } |
425de4c8 | 1797 | |
8bcf08e0 FC |
1798 | localTempBuffer.offset = reqofs; |
1799 | localTempBuffer.length = getNextNode()->readBuffer.length; | |
1800 | localTempBuffer.data = getNextNode()->readBuffer.data; | |
1801 | storeClientCopy(sc, http->storeEntry(), localTempBuffer, CacheHit, this); | |
edce4d98 | 1802 | } else { |
62e76326 | 1803 | /* MISS CASE, http->logType is already set! */ |
0655fa4d | 1804 | processMiss(); |
edce4d98 | 1805 | } |
1806 | } | |
1807 | ||
d85b8894 | 1808 | /** The next node has removed itself from the stream. */ |
edce4d98 | 1809 | void |
59a1efb2 | 1810 | clientReplyDetach(clientStreamNode * node, ClientHttpRequest * http) |
edce4d98 | 1811 | { |
d85b8894 | 1812 | /** detach from the stream */ |
edce4d98 | 1813 | clientStreamDetach(node, http); |
1814 | } | |
1815 | ||
d85b8894 AJ |
1816 | /** |
1817 | * Accepts chunk of a http message in buf, parses prefix, filters headers and | |
edce4d98 | 1818 | * such, writes processed message to the message recipient |
1819 | */ | |
1820 | void | |
0655fa4d | 1821 | clientReplyContext::SendMoreData(void *data, StoreIOBuffer result) |
edce4d98 | 1822 | { |
e6ccf245 | 1823 | clientReplyContext *context = static_cast<clientReplyContext *>(data); |
528b2c61 | 1824 | context->sendMoreData (result); |
1825 | } | |
1826 | ||
1827 | void | |
1828 | clientReplyContext::makeThisHead() | |
1829 | { | |
1830 | /* At least, I think thats what this does */ | |
1831 | dlinkDelete(&http->active, &ClientActiveRequests); | |
1832 | dlinkAdd(http, &http->active, &ClientActiveRequests); | |
1833 | } | |
1834 | ||
1835 | bool | |
1836 | clientReplyContext::errorInStream(StoreIOBuffer const &result, size_t const &sizeToProcess)const | |
1837 | { | |
1838 | return /* aborted request */ | |
86a2f789 | 1839 | (http->storeEntry() && EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) || |
62e76326 | 1840 | /* Upstream read error */ (result.flags.error) || |
1841 | /* Upstream EOF */ (sizeToProcess == 0); | |
528b2c61 | 1842 | } |
1843 | ||
1844 | void | |
1845 | clientReplyContext::sendStreamError(StoreIOBuffer const &result) | |
1846 | { | |
d85b8894 | 1847 | /** call clientWriteComplete so the client socket gets closed |
af6a12ee | 1848 | * |
d85b8894 | 1849 | * We call into the stream, because we don't know that there is a |
528b2c61 | 1850 | * client socket! |
1851 | */ | |
26ac0430 | 1852 | debugs(88, 5, "clientReplyContext::sendStreamError: A stream error has occured, marking as complete and sending no data."); |
8bcf08e0 | 1853 | StoreIOBuffer localTempBuffer; |
528b2c61 | 1854 | flags.complete = 1; |
e857372a | 1855 | http->request->flags.streamError = true; |
8bcf08e0 | 1856 | localTempBuffer.flags.error = result.flags.error; |
528b2c61 | 1857 | clientStreamCallback((clientStreamNode*)http->client_stream.head->data, http, NULL, |
8bcf08e0 | 1858 | localTempBuffer); |
528b2c61 | 1859 | } |
1860 | ||
1861 | void | |
1862 | clientReplyContext::pushStreamData(StoreIOBuffer const &result, char *source) | |
1863 | { | |
8bcf08e0 | 1864 | StoreIOBuffer localTempBuffer; |
62e76326 | 1865 | |
528b2c61 | 1866 | if (result.length == 0) { |
bf8fe701 | 1867 | debugs(88, 5, "clientReplyContext::pushStreamData: marking request as complete due to 0 length store result"); |
62e76326 | 1868 | flags.complete = 1; |
528b2c61 | 1869 | } |
62e76326 | 1870 | |
43ae1d95 | 1871 | assert(result.offset - headers_sz == next()->readBuffer.offset); |
8bcf08e0 FC |
1872 | localTempBuffer.offset = result.offset - headers_sz; |
1873 | localTempBuffer.length = result.length; | |
62e76326 | 1874 | |
8bcf08e0 FC |
1875 | if (localTempBuffer.length) |
1876 | localTempBuffer.data = source; | |
62e76326 | 1877 | |
528b2c61 | 1878 | clientStreamCallback((clientStreamNode*)http->client_stream.head->data, http, NULL, |
8bcf08e0 | 1879 | localTempBuffer); |
528b2c61 | 1880 | } |
1881 | ||
1882 | clientStreamNode * | |
1883 | clientReplyContext::next() const | |
1884 | { | |
1885 | assert ( (clientStreamNode*)http->client_stream.head->next->data == getNextNode()); | |
1886 | return getNextNode(); | |
1887 | } | |
1888 | ||
b51aec66 | 1889 | void |
16611143 | 1890 | clientReplyContext::sendBodyTooLargeError() |
b51aec66 | 1891 | { |
b7ac5457 | 1892 | Ip::Address tmp_noaddr; |
4dd643d5 | 1893 | tmp_noaddr.setNoAddr(); // TODO: make a global const |
af0d9bca | 1894 | http->logType = LOG_TCP_DENIED_REPLY; |
955394ce | 1895 | ErrorState *err = clientBuildError(ERR_TOO_BIG, Http::scForbidden, NULL, |
73c36fd9 | 1896 | http->getConn() != NULL ? http->getConn()->clientConnection->remote : tmp_noaddr, |
26ac0430 | 1897 | http->request); |
16611143 | 1898 | removeClientStoreReference(&(sc), http); |
1899 | HTTPMSGUNLOCK(reply); | |
1900 | startError(err); | |
26ac0430 | 1901 | |
b51aec66 | 1902 | } |
1903 | ||
79c8035e AR |
1904 | /// send 412 (Precondition Failed) to client |
1905 | void | |
1906 | clientReplyContext::sendPreconditionFailedError() | |
1907 | { | |
1908 | http->logType = LOG_TCP_HIT; | |
1909 | ErrorState *const err = | |
955394ce | 1910 | clientBuildError(ERR_PRECONDITION_FAILED, Http::scPreconditionFailed, |
73c36fd9 | 1911 | NULL, http->getConn()->clientConnection->remote, http->request); |
79c8035e AR |
1912 | removeClientStoreReference(&sc, http); |
1913 | HTTPMSGUNLOCK(reply); | |
1914 | startError(err); | |
1915 | } | |
1916 | ||
a2bd457d AJ |
1917 | /// send 304 (Not Modified) to client |
1918 | void | |
1919 | clientReplyContext::sendNotModified() | |
1920 | { | |
1921 | StoreEntry *e = http->storeEntry(); | |
1922 | const time_t timestamp = e->timestamp; | |
1923 | HttpReply *const temprep = e->getReply()->make304(); | |
1924 | http->logType = LOG_TCP_IMS_HIT; | |
1925 | removeClientStoreReference(&sc, http); | |
f206b652 | 1926 | createStoreEntry(http->request->method, RequestFlags()); |
a2bd457d AJ |
1927 | e = http->storeEntry(); |
1928 | // Copy timestamp from the original entry so the 304 | |
1929 | // reply has a meaningful Age: header. | |
90fa5816 | 1930 | e->timestampsSet(); |
a2bd457d AJ |
1931 | e->timestamp = timestamp; |
1932 | e->replaceHttpReply(temprep); | |
1933 | e->complete(); | |
1934 | /* | |
1935 | * TODO: why put this in the store and then serialise it and | |
1936 | * then parse it again. Simply mark the request complete in | |
1937 | * our context and write the reply struct to the client side. | |
1938 | */ | |
1939 | triggerInitialStoreRead(); | |
1940 | } | |
1941 | ||
1942 | /// send 304 (Not Modified) or 412 (Precondition Failed) to client | |
1943 | /// depending on request method | |
1944 | void | |
1945 | clientReplyContext::sendNotModifiedOrPreconditionFailedError() | |
1946 | { | |
c2a7cefd AJ |
1947 | if (http->request->method == Http::METHOD_GET || |
1948 | http->request->method == Http::METHOD_HEAD) | |
a2bd457d AJ |
1949 | sendNotModified(); |
1950 | else | |
1951 | sendPreconditionFailedError(); | |
1952 | } | |
1953 | ||
4993f571 | 1954 | void |
1955 | clientReplyContext::processReplyAccess () | |
1956 | { | |
b50e327b | 1957 | /* NP: this should probably soft-fail to a zero-sized-reply error ?? */ |
7dc5f514 | 1958 | assert(reply); |
b50e327b AJ |
1959 | |
1960 | /** Don't block our own responses or HTTP status messages */ | |
16611143 | 1961 | if (http->logType == LOG_TCP_DENIED || |
26ac0430 | 1962 | http->logType == LOG_TCP_DENIED_REPLY || |
9b769c67 | 1963 | alwaysAllowResponse(reply->sline.status())) { |
acbf9428 | 1964 | headers_sz = reply->hdr_sz; |
2efeb0b7 | 1965 | processReplyAccessResult(ACCESS_ALLOWED); |
26ac0430 | 1966 | return; |
230a8cc6 | 1967 | } |
26ac0430 | 1968 | |
b50e327b | 1969 | /** Check for reply to big error */ |
16611143 | 1970 | if (reply->expectedBodyTooLarge(*http->request)) { |
1971 | sendBodyTooLargeError(); | |
62e76326 | 1972 | return; |
1973 | } | |
1974 | ||
7dc5f514 | 1975 | headers_sz = reply->hdr_sz; |
230a8cc6 | 1976 | |
b50e327b | 1977 | /** check for absent access controls (permit by default) */ |
230a8cc6 | 1978 | if (!Config.accessList.reply) { |
2efeb0b7 | 1979 | processReplyAccessResult(ACCESS_ALLOWED); |
26ac0430 | 1980 | return; |
230a8cc6 | 1981 | } |
1982 | ||
b50e327b | 1983 | /** Process http_reply_access lists */ |
127dce76 AR |
1984 | ACLFilledChecklist *replyChecklist = |
1985 | clientAclChecklistCreate(Config.accessList.reply, http); | |
b248c2a3 AJ |
1986 | replyChecklist->reply = reply; |
1987 | HTTPMSGLOCK(replyChecklist->reply); | |
0655fa4d | 1988 | replyChecklist->nonBlockingCheck(ProcessReplyAccessResult, this); |
4993f571 | 1989 | } |
1990 | ||
1991 | void | |
2efeb0b7 | 1992 | clientReplyContext::ProcessReplyAccessResult(allow_t rv, void *voidMe) |
4993f571 | 1993 | { |
1994 | clientReplyContext *me = static_cast<clientReplyContext *>(voidMe); | |
0655fa4d | 1995 | me->processReplyAccessResult(rv); |
4993f571 | 1996 | } |
1997 | ||
1998 | void | |
2efeb0b7 | 1999 | clientReplyContext::processReplyAccessResult(const allow_t &accessAllowed) |
4993f571 | 2000 | { |
7f06a3d8 AJ |
2001 | debugs(88, 2, "The reply for " << http->request->method |
2002 | << ' ' << http->uri << " is " << accessAllowed << ", because it matched " | |
2003 | << (AclMatchedName ? AclMatchedName : "NO ACL's")); | |
62e76326 | 2004 | |
2efeb0b7 | 2005 | if (accessAllowed != ACCESS_ALLOWED) { |
62e76326 | 2006 | ErrorState *err; |
0185bd6f | 2007 | err_type page_id; |
9ce7856a | 2008 | page_id = aclGetDenyInfoPage(&Config.denyInfoList, AclMatchedName, 1); |
0185bd6f | 2009 | |
c466369c | 2010 | http->logType = LOG_TCP_DENIED_REPLY; |
2011 | ||
0185bd6f | 2012 | if (page_id == ERR_NONE) |
2013 | page_id = ERR_ACCESS_DENIED; | |
2014 | ||
b7ac5457 | 2015 | Ip::Address tmp_noaddr; |
4dd643d5 | 2016 | tmp_noaddr.setNoAddr(); |
955394ce | 2017 | err = clientBuildError(page_id, Http::scForbidden, NULL, |
73c36fd9 | 2018 | http->getConn() != NULL ? http->getConn()->clientConnection->remote : tmp_noaddr, |
26ac0430 | 2019 | http->request); |
0185bd6f | 2020 | |
86a2f789 | 2021 | removeClientStoreReference(&sc, http); |
0185bd6f | 2022 | |
7dc5f514 | 2023 | HTTPMSGUNLOCK(reply); |
0185bd6f | 2024 | |
3c2c1d31 | 2025 | startError(err); |
2026 | ||
62e76326 | 2027 | return; |
2028 | } | |
2029 | ||
0976f8db | 2030 | /* Ok, the reply is allowed, */ |
2031 | http->loggingEntry(http->storeEntry()); | |
2032 | ||
7dc5f514 | 2033 | ssize_t body_size = reqofs - reply->hdr_sz; |
b297bcd0 | 2034 | if (body_size < 0) { |
26ac0430 AJ |
2035 | reqofs = reply->hdr_sz; |
2036 | body_size = 0; | |
b297bcd0 | 2037 | } |
0976f8db | 2038 | |
bf8fe701 | 2039 | debugs(88, 3, "clientReplyContext::sendMoreData: Appending " << |
2040 | (int) body_size << " bytes after " << reply->hdr_sz << | |
2041 | " bytes of headers"); | |
0976f8db | 2042 | |
f41735ea | 2043 | #if USE_SQUID_ESI |
62e76326 | 2044 | |
9b769c67 AJ |
2045 | if (http->flags.accel && reply->sline.status() != Http::scForbidden && |
2046 | !alwaysAllowResponse(reply->sline.status()) && | |
7dc5f514 | 2047 | esiEnableProcessing(reply)) { |
bf8fe701 | 2048 | debugs(88, 2, "Enabling ESI processing for " << http->uri); |
43ae1d95 | 2049 | clientStreamInsertHead(&http->client_stream, esiStreamRead, |
2050 | esiProcessStream, esiStreamDetach, esiStreamStatus, NULL); | |
2051 | } | |
2052 | ||
5ef38a13 | 2053 | #endif |
2054 | ||
c2a7cefd | 2055 | if (http->request->method == Http::METHOD_HEAD) { |
62e76326 | 2056 | /* do not forward body for HEAD replies */ |
2057 | body_size = 0; | |
be4d35dc | 2058 | http->flags.done_copying = true; |
62e76326 | 2059 | flags.complete = 1; |
2060 | } | |
2061 | ||
2062 | assert (!flags.headersSent); | |
2063 | flags.headersSent = true; | |
2064 | ||
8bcf08e0 | 2065 | StoreIOBuffer localTempBuffer; |
62e76326 | 2066 | char *buf = next()->readBuffer.data; |
e85eb4e1 | 2067 | char *body_buf = buf + reply->hdr_sz; |
62e76326 | 2068 | |
49ea0125 | 2069 | //Server side may disable ranges under some circumstances. |
2070 | ||
2071 | if ((!http->request->range)) | |
2072 | next()->readBuffer.offset = 0; | |
2073 | ||
e85eb4e1 AJ |
2074 | body_buf -= next()->readBuffer.offset; |
2075 | ||
62e76326 | 2076 | if (next()->readBuffer.offset != 0) { |
2077 | if (next()->readBuffer.offset > body_size) { | |
2324cda2 | 2078 | /* Can't use any of the body we received. send nothing */ |
8bcf08e0 FC |
2079 | localTempBuffer.length = 0; |
2080 | localTempBuffer.data = NULL; | |
62e76326 | 2081 | } else { |
8bcf08e0 FC |
2082 | localTempBuffer.length = body_size - next()->readBuffer.offset; |
2083 | localTempBuffer.data = body_buf + next()->readBuffer.offset; | |
62e76326 | 2084 | } |
2085 | } else { | |
8bcf08e0 FC |
2086 | localTempBuffer.length = body_size; |
2087 | localTempBuffer.data = body_buf; | |
62e76326 | 2088 | } |
2089 | ||
0655fa4d | 2090 | /* TODO??: move the data in the buffer back by the request header size */ |
62e76326 | 2091 | clientStreamCallback((clientStreamNode *)http->client_stream.head->data, |
8bcf08e0 | 2092 | http, reply, localTempBuffer); |
62e76326 | 2093 | |
2094 | return; | |
4993f571 | 2095 | } |
2096 | ||
528b2c61 | 2097 | void |
2098 | clientReplyContext::sendMoreData (StoreIOBuffer result) | |
2099 | { | |
50c09fc4 | 2100 | if (deleting) |
2101 | return; | |
2102 | ||
86a2f789 | 2103 | StoreEntry *entry = http->storeEntry(); |
50c09fc4 | 2104 | |
1cf238db | 2105 | ConnStateData * conn = http->getConn(); |
50c09fc4 | 2106 | |
ea25a575 TH |
2107 | // too late, our conn is closing |
2108 | // TODO: should we also quit? | |
2109 | if (conn == NULL) { | |
2110 | debugs(33,3, "not sending more data to a closed connection" ); | |
2111 | return; | |
2112 | } | |
2113 | if (!conn->isOpen()) { | |
2114 | debugs(33,3, "not sending more data to closing connection " << conn->clientConnection); | |
9af2f95b AR |
2115 | return; |
2116 | } | |
693cb033 CT |
2117 | if (conn->pinning.zeroReply) { |
2118 | debugs(33,3, "not sending more data after a pinned zero reply " << conn->clientConnection); | |
9af2f95b AR |
2119 | return; |
2120 | } | |
50c09fc4 | 2121 | |
528b2c61 | 2122 | char *buf = next()->readBuffer.data; |
50c09fc4 | 2123 | |
da33c835 | 2124 | if (buf != result.data) { |
62e76326 | 2125 | /* we've got to copy some data */ |
2126 | assert(result.length <= next()->readBuffer.length); | |
41d00cd3 | 2127 | memcpy(buf, result.data, result.length); |
edce4d98 | 2128 | } |
62e76326 | 2129 | |
73c36fd9 | 2130 | if (reqofs==0 && !logTypeIsATcpHit(http->logType) && Comm::IsConnOpen(conn->clientConnection)) { |
425de4c8 | 2131 | if (Ip::Qos::TheConfig.isHitTosActive()) { |
73c36fd9 | 2132 | Ip::Qos::doTosLocalMiss(conn->clientConnection, http->request->hier.code); |
425de4c8 AJ |
2133 | } |
2134 | if (Ip::Qos::TheConfig.isHitNfmarkActive()) { | |
73c36fd9 | 2135 | Ip::Qos::doNfmarkLocalMiss(conn->clientConnection, http->request->hier.code); |
452bb8e2 | 2136 | } |
7172612f | 2137 | } |
7172612f | 2138 | |
ab9c533b HN |
2139 | /* We've got the final data to start pushing... */ |
2140 | flags.storelogiccomplete = 1; | |
2141 | ||
4993f571 | 2142 | reqofs += result.length; |
2143 | ||
2144 | assert(reqofs <= HTTP_REQBUF_SZ || flags.headersSent); | |
62e76326 | 2145 | |
edce4d98 | 2146 | assert(http->request != NULL); |
62e76326 | 2147 | |
edce4d98 | 2148 | /* ESI TODO: remove this assert once everything is stable */ |
2149 | assert(http->client_stream.head->data | |
62e76326 | 2150 | && cbdataReferenceValid(http->client_stream.head->data)); |
528b2c61 | 2151 | |
2152 | makeThisHead(); | |
62e76326 | 2153 | |
bf8fe701 | 2154 | debugs(88, 5, "clientReplyContext::sendMoreData: " << http->uri << ", " << |
47f6e231 | 2155 | reqofs << " bytes (" << result.length << |
bf8fe701 | 2156 | " new bytes)"); |
47f6e231 | 2157 | debugs(88, 5, "clientReplyContext::sendMoreData:" |
73c36fd9 | 2158 | << conn->clientConnection << |
26ac0430 AJ |
2159 | " '" << entry->url() << "'" << |
2160 | " out.offset=" << http->out.offset); | |
528b2c61 | 2161 | |
edce4d98 | 2162 | /* update size of the request */ |
4993f571 | 2163 | reqsize = reqofs; |
62e76326 | 2164 | |
4993f571 | 2165 | if (errorInStream(result, reqofs)) { |
62e76326 | 2166 | sendStreamError(result); |
2167 | return; | |
edce4d98 | 2168 | } |
528b2c61 | 2169 | |
2170 | if (flags.headersSent) { | |
62e76326 | 2171 | pushStreamData (result, buf); |
2172 | return; | |
edce4d98 | 2173 | } |
62e76326 | 2174 | |
b297bcd0 | 2175 | cloneReply(); |
21b92762 | 2176 | |
b297bcd0 | 2177 | /* handle headers */ |
21b92762 | 2178 | |
b297bcd0 | 2179 | if (Config.onoff.log_mime_hdrs) { |
26ac0430 | 2180 | size_t k; |
43ae1d95 | 2181 | |
26ac0430 | 2182 | if ((k = headersEnd(buf, reqofs))) { |
41ebd397 CT |
2183 | safe_free(http->al->headers.reply); |
2184 | http->al->headers.reply = (char *)xcalloc(k + 1, 1); | |
2185 | xstrncpy(http->al->headers.reply, buf, k); | |
26ac0430 | 2186 | } |
edce4d98 | 2187 | } |
b297bcd0 HN |
2188 | |
2189 | holdingBuffer = result; | |
2190 | processReplyAccess(); | |
2191 | return; | |
edce4d98 | 2192 | } |
2193 | ||
edce4d98 | 2194 | /* Using this breaks the client layering just a little! |
2195 | */ | |
0655fa4d | 2196 | void |
f206b652 | 2197 | clientReplyContext::createStoreEntry(const HttpRequestMethod& m, RequestFlags reqFlags) |
edce4d98 | 2198 | { |
0655fa4d | 2199 | assert(http != NULL); |
edce4d98 | 2200 | /* |
2201 | * For erroneous requests, we might not have a h->request, | |
2202 | * so make a fake one. | |
2203 | */ | |
62e76326 | 2204 | |
b248c2a3 AJ |
2205 | if (http->request == NULL) { |
2206 | http->request = new HttpRequest(m, AnyP::PROTO_NONE, null_string); | |
2207 | HTTPMSGLOCK(http->request); | |
2208 | } | |
62e76326 | 2209 | |
a8a0b1c2 | 2210 | StoreEntry *e = storeCreateEntry(storeId(), http->log_uri, reqFlags, m); |
62e76326 | 2211 | |
e4d13993 AR |
2212 | // Make entry collapsable ASAP, to increase collapsing chances for others, |
2213 | // TODO: every must-revalidate and similar request MUST reach the origin, | |
2214 | // but do we have to prohibit others from collapsing on that request? | |
9a9954ba | 2215 | if (Config.onoff.collapsed_forwarding && reqFlags.cachable && |
9d4e9cfb AR |
2216 | !reqFlags.needValidation && |
2217 | (m == Http::METHOD_GET || m == Http::METHOD_HEAD)) { | |
9a9954ba AR |
2218 | // make the entry available for future requests now |
2219 | Store::Root().allowCollapsing(e, reqFlags, m); | |
2220 | } | |
2221 | ||
0655fa4d | 2222 | sc = storeClientListAdd(e, this); |
62e76326 | 2223 | |
9a0a18de | 2224 | #if USE_DELAY_POOLS |
0655fa4d | 2225 | sc->setDelayId(DelayId::DelayClient(http)); |
edce4d98 | 2226 | #endif |
62e76326 | 2227 | |
0655fa4d | 2228 | reqofs = 0; |
62e76326 | 2229 | |
0655fa4d | 2230 | reqsize = 0; |
62e76326 | 2231 | |
edce4d98 | 2232 | /* I don't think this is actually needed! -- adrian */ |
0655fa4d | 2233 | /* http->reqbuf = http->norm_reqbuf; */ |
2234 | // assert(http->reqbuf == http->norm_reqbuf); | |
edce4d98 | 2235 | /* The next line is illegal because we don't know if the client stream |
26ac0430 | 2236 | * buffers have been set up |
edce4d98 | 2237 | */ |
0655fa4d | 2238 | // storeClientCopy(http->sc, e, 0, HTTP_REQBUF_SZ, http->reqbuf, |
2239 | // SendMoreData, this); | |
edce4d98 | 2240 | /* So, we mark the store logic as complete */ |
8bcf08e0 | 2241 | flags.storelogiccomplete = 1; |
62e76326 | 2242 | |
edce4d98 | 2243 | /* and get the caller to request a read, from whereever they are */ |
62e76326 | 2244 | /* NOTE: after ANY data flows down the pipe, even one step, |
26ac0430 | 2245 | * this function CAN NOT be used to manage errors |
edce4d98 | 2246 | */ |
86a2f789 | 2247 | http->storeEntry(e); |
edce4d98 | 2248 | } |
2249 | ||
2250 | ErrorState * | |
955394ce | 2251 | clientBuildError(err_type page_id, Http::StatusCode status, char const *url, |
b7ac5457 | 2252 | Ip::Address &src_addr, HttpRequest * request) |
edce4d98 | 2253 | { |
913524f0 | 2254 | ErrorState *err = new ErrorState(page_id, status, request); |
cc192b50 | 2255 | err->src_addr = src_addr; |
62e76326 | 2256 | |
edce4d98 | 2257 | if (url) |
62e76326 | 2258 | err->url = xstrdup(url); |
2259 | ||
edce4d98 | 2260 | return err; |
2261 | } | |
f53969cc | 2262 |