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edce4d98 | 1 | /* |
5b74111a | 2 | * Copyright (C) 1996-2018 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 | 22 | #include "globals.h" |
d3dddfb5 | 23 | #include "http/Stream.h" |
a5bac1d2 | 24 | #include "HttpHeaderTools.h" |
b7ac5457 AJ |
25 | #include "HttpReply.h" |
26 | #include "HttpRequest.h" | |
27 | #include "ip/QosConfig.h" | |
714e68b7 | 28 | #include "ipcache.h" |
1c7ae5ff | 29 | #include "log/access_log.h" |
b7ac5457 | 30 | #include "MemObject.h" |
b6149797 | 31 | #include "mime_header.h" |
f0ba2534 | 32 | #include "neighbors.h" |
c6f15d40 | 33 | #include "refresh.h" |
f206b652 | 34 | #include "RequestFlags.h" |
4d5904f7 | 35 | #include "SquidConfig.h" |
985c86bc | 36 | #include "SquidTime.h" |
b7ac5457 | 37 | #include "Store.h" |
28204b3b | 38 | #include "StrList.h" |
4e540555 | 39 | #include "tools.h" |
b1bd952a | 40 | #include "URL.h" |
582c2af2 FC |
41 | #if USE_AUTH |
42 | #include "auth/UserRequest.h" | |
43 | #endif | |
44 | #if USE_DELAY_POOLS | |
45 | #include "DelayPools.h" | |
46 | #endif | |
47 | #if USE_SQUID_ESI | |
48 | #include "esi/Esi.h" | |
49 | #endif | |
e6ccf245 | 50 | |
3e4f6092 FC |
51 | #include <memory> |
52 | ||
0655fa4d | 53 | CBDATA_CLASS_INIT(clientReplyContext); |
edce4d98 | 54 | |
edce4d98 | 55 | /* Local functions */ |
e6ccf245 | 56 | extern "C" CSS clientReplyStatus; |
955394ce | 57 | ErrorState *clientBuildError(err_type, Http::StatusCode, char const *, Ip::Address &, HttpRequest *); |
edce4d98 | 58 | |
edce4d98 | 59 | /* privates */ |
edce4d98 | 60 | |
0655fa4d | 61 | clientReplyContext::~clientReplyContext() |
edce4d98 | 62 | { |
50c09fc4 | 63 | deleting = true; |
64 | /* This may trigger a callback back into SendMoreData as the cbdata | |
65 | * is still valid | |
66 | */ | |
86a2f789 | 67 | removeClientStoreReference(&sc, http); |
edce4d98 | 68 | /* old_entry might still be set if we didn't yet get the reply |
0655fa4d | 69 | * code in HandleIMSReply() */ |
70 | removeStoreReference(&old_sc, &old_entry); | |
71 | safe_free(tempBuffer.data); | |
72 | cbdataReferenceDone(http); | |
2b7d324b | 73 | HTTPMSGUNLOCK(reply); |
edce4d98 | 74 | } |
75 | ||
cc8c4af2 AJ |
76 | clientReplyContext::clientReplyContext(ClientHttpRequest *clientContext) : |
77 | purgeStatus(Http::scNone), | |
78 | lookingforstore(0), | |
79 | http(cbdataReference(clientContext)), | |
67969886 | 80 | headers_sz(0), |
cc8c4af2 AJ |
81 | sc(NULL), |
82 | old_reqsize(0), | |
83 | reqsize(0), | |
84 | reqofs(0), | |
85 | #if USE_CACHE_DIGESTS | |
86 | lookup_type(NULL), | |
87 | #endif | |
88 | ourNode(NULL), | |
89 | reply(NULL), | |
90 | old_entry(NULL), | |
91 | old_sc(NULL), | |
e7e0f8a4 | 92 | old_lastmod(-1), |
1a210de4 EB |
93 | deleting(false), |
94 | collapsedRevalidation(crNone) | |
cc8c4af2 AJ |
95 | { |
96 | *tempbuf = 0; | |
97 | } | |
edce4d98 | 98 | |
a5c8d64d AJ |
99 | /** Create an error in the store awaiting the client side to read it. |
100 | * | |
101 | * This may be better placed in the clientStream logic, but it has not been | |
0655fa4d | 102 | * relocated there yet |
103 | */ | |
edce4d98 | 104 | void |
0655fa4d | 105 | clientReplyContext::setReplyToError( |
955394ce | 106 | err_type err, Http::StatusCode status, const HttpRequestMethod& method, char const *uri, |
b7ac5457 | 107 | Ip::Address &addr, HttpRequest * failedrequest, const char *unparsedrequest, |
2f1431ea | 108 | #if USE_AUTH |
c7baff40 | 109 | Auth::UserRequest::Pointer auth_user_request |
2f1431ea | 110 | #else |
9d2b8284 | 111 | void* |
2f1431ea | 112 | #endif |
74174c03 | 113 | ) |
edce4d98 | 114 | { |
a33a428a | 115 | ErrorState *errstate = clientBuildError(err, status, uri, addr, failedrequest); |
62e76326 | 116 | |
edce4d98 | 117 | if (unparsedrequest) |
62e76326 | 118 | errstate->request_hdrs = xstrdup(unparsedrequest); |
edce4d98 | 119 | |
8eb0a7ee CT |
120 | #if USE_AUTH |
121 | errstate->auth_user_request = auth_user_request; | |
122 | #endif | |
123 | setReplyToError(method, errstate); | |
124 | } | |
125 | ||
126 | void clientReplyContext::setReplyToError(const HttpRequestMethod& method, ErrorState *errstate) | |
127 | { | |
955394ce | 128 | if (errstate->httpStatus == Http::scNotImplemented && http->request) |
62e76326 | 129 | /* prevent confusion over whether we default to persistent or not */ |
e857372a | 130 | http->request->flags.proxyKeepalive = false; |
62e76326 | 131 | |
41ebd397 | 132 | http->al->http.code = errstate->httpStatus; |
edce4d98 | 133 | |
f0baf149 AR |
134 | if (http->request) |
135 | http->request->ignoreRange("responding with a Squid-generated error"); | |
136 | ||
f206b652 | 137 | createStoreEntry(method, RequestFlags()); |
edce4d98 | 138 | assert(errstate->callback_data == NULL); |
86a2f789 | 139 | errorAppendEntry(http->storeEntry(), errstate); |
edce4d98 | 140 | /* Now the caller reads to get this */ |
141 | } | |
142 | ||
eacfca83 AR |
143 | void |
144 | clientReplyContext::setReplyToReply(HttpReply *futureReply) | |
145 | { | |
146 | Must(futureReply); | |
147 | http->al->http.code = futureReply->sline.status(); | |
148 | ||
149 | HttpRequestMethod method; | |
150 | if (http->request) { // nil on responses to unparsable requests | |
151 | http->request->ignoreRange("responding with a Squid-generated reply"); | |
152 | method = http->request->method; | |
153 | } | |
154 | ||
155 | createStoreEntry(method, RequestFlags()); | |
156 | ||
157 | http->storeEntry()->storeErrorResponse(futureReply); | |
158 | /* Now the caller reads to get futureReply */ | |
159 | } | |
160 | ||
f0baf149 AR |
161 | // Assumes that the entry contains an error response without Content-Range. |
162 | // To use with regular entries, make HTTP Range header removal conditional. | |
163 | void clientReplyContext::setReplyToStoreEntry(StoreEntry *entry, const char *reason) | |
061bbdec | 164 | { |
1bfe9ade | 165 | entry->lock("clientReplyContext::setReplyToStoreEntry"); // removeClientStoreReference() unlocks |
061bbdec CT |
166 | sc = storeClientListAdd(entry, this); |
167 | #if USE_DELAY_POOLS | |
168 | sc->setDelayId(DelayId::DelayClient(http)); | |
169 | #endif | |
170 | reqofs = 0; | |
171 | reqsize = 0; | |
f0baf149 AR |
172 | if (http->request) |
173 | http->request->ignoreRange(reason); | |
061bbdec CT |
174 | flags.storelogiccomplete = 1; |
175 | http->storeEntry(entry); | |
176 | } | |
177 | ||
edce4d98 | 178 | void |
0655fa4d | 179 | clientReplyContext::removeStoreReference(store_client ** scp, |
180 | StoreEntry ** ep) | |
edce4d98 | 181 | { |
182 | StoreEntry *e; | |
e4ae841b | 183 | store_client *sc_tmp = *scp; |
62e76326 | 184 | |
edce4d98 | 185 | if ((e = *ep) != NULL) { |
62e76326 | 186 | *ep = NULL; |
e4ae841b | 187 | storeUnregister(sc_tmp, e, this); |
62e76326 | 188 | *scp = NULL; |
1bfe9ade | 189 | e->unlock("clientReplyContext::removeStoreReference"); |
edce4d98 | 190 | } |
191 | } | |
192 | ||
86a2f789 | 193 | void |
8bcf08e0 | 194 | clientReplyContext::removeClientStoreReference(store_client **scp, ClientHttpRequest *aHttpRequest) |
86a2f789 | 195 | { |
8bcf08e0 | 196 | StoreEntry *reference = aHttpRequest->storeEntry(); |
86a2f789 | 197 | removeStoreReference(scp, &reference); |
8bcf08e0 | 198 | aHttpRequest->storeEntry(reference); |
86a2f789 | 199 | } |
200 | ||
edce4d98 | 201 | void |
0655fa4d | 202 | clientReplyContext::saveState() |
edce4d98 | 203 | { |
e6ccf245 | 204 | assert(old_sc == NULL); |
bf8fe701 | 205 | debugs(88, 3, "clientReplyContext::saveState: saving store context"); |
86a2f789 | 206 | old_entry = http->storeEntry(); |
e6ccf245 | 207 | old_sc = sc; |
e7e0f8a4 EB |
208 | old_lastmod = http->request->lastmod; |
209 | old_etag = http->request->etag; | |
e6ccf245 | 210 | old_reqsize = reqsize; |
211 | tempBuffer.offset = reqofs; | |
edce4d98 | 212 | /* Prevent accessing the now saved entries */ |
86a2f789 | 213 | http->storeEntry(NULL); |
e6ccf245 | 214 | sc = NULL; |
215 | reqsize = 0; | |
216 | reqofs = 0; | |
edce4d98 | 217 | } |
218 | ||
219 | void | |
0655fa4d | 220 | clientReplyContext::restoreState() |
edce4d98 | 221 | { |
e6ccf245 | 222 | assert(old_sc != NULL); |
bf8fe701 | 223 | debugs(88, 3, "clientReplyContext::restoreState: Restoring store context"); |
86a2f789 | 224 | removeClientStoreReference(&sc, http); |
225 | http->storeEntry(old_entry); | |
e6ccf245 | 226 | sc = old_sc; |
227 | reqsize = old_reqsize; | |
228 | reqofs = tempBuffer.offset; | |
e7e0f8a4 EB |
229 | http->request->lastmod = old_lastmod; |
230 | http->request->etag = old_etag; | |
edce4d98 | 231 | /* Prevent accessed the old saved entries */ |
0655fa4d | 232 | old_entry = NULL; |
e6ccf245 | 233 | old_sc = NULL; |
e7e0f8a4 EB |
234 | old_lastmod = -1; |
235 | old_etag.clean(); | |
e6ccf245 | 236 | old_reqsize = 0; |
237 | tempBuffer.offset = 0; | |
c8be6d7b | 238 | } |
239 | ||
240 | void | |
0655fa4d | 241 | clientReplyContext::startError(ErrorState * err) |
c8be6d7b | 242 | { |
f206b652 | 243 | createStoreEntry(http->request->method, RequestFlags()); |
0655fa4d | 244 | triggerInitialStoreRead(); |
86a2f789 | 245 | errorAppendEntry(http->storeEntry(), err); |
edce4d98 | 246 | } |
247 | ||
e6ccf245 | 248 | clientStreamNode * |
528b2c61 | 249 | clientReplyContext::getNextNode() const |
e6ccf245 | 250 | { |
62e76326 | 251 | return (clientStreamNode *)ourNode->node.next->data; |
e6ccf245 | 252 | } |
253 | ||
62e76326 | 254 | /* This function is wrong - the client parameters don't include the |
528b2c61 | 255 | * header offset |
256 | */ | |
c8be6d7b | 257 | void |
0655fa4d | 258 | clientReplyContext::triggerInitialStoreRead() |
c8be6d7b | 259 | { |
0655fa4d | 260 | /* when confident, 0 becomes reqofs, and then this factors into |
26ac0430 | 261 | * startSendProcess |
528b2c61 | 262 | */ |
0655fa4d | 263 | assert(reqofs == 0); |
8bcf08e0 FC |
264 | StoreIOBuffer localTempBuffer (next()->readBuffer.length, 0, next()->readBuffer.data); |
265 | storeClientCopy(sc, http->storeEntry(), localTempBuffer, SendMoreData, this); | |
c8be6d7b | 266 | } |
edce4d98 | 267 | |
268 | /* there is an expired entry in the store. | |
269 | * setup a temporary buffer area and perform an IMS to the origin | |
270 | */ | |
0655fa4d | 271 | void |
272 | clientReplyContext::processExpired() | |
edce4d98 | 273 | { |
a8a0b1c2 | 274 | const char *url = storeId(); |
bf8fe701 | 275 | debugs(88, 3, "clientReplyContext::processExpired: '" << http->uri << "'"); |
438b41ba EB |
276 | const time_t lastmod = http->storeEntry()->lastModified(); |
277 | assert(lastmod >= 0); | |
edce4d98 | 278 | /* |
279 | * check if we are allowed to contact other servers | |
26ac0430 | 280 | * @?@: Instead of a 504 (Gateway Timeout) reply, we may want to return |
edce4d98 | 281 | * a stale entry *if* it matches client requirements |
282 | */ | |
62e76326 | 283 | |
0655fa4d | 284 | if (http->onlyIfCached()) { |
285 | processOnlyIfCachedMiss(); | |
62e76326 | 286 | return; |
edce4d98 | 287 | } |
62e76326 | 288 | |
cb72b1ca | 289 | http->logType = LOG_TCP_REFRESH; |
e857372a | 290 | http->request->flags.refresh = true; |
edce4d98 | 291 | #if STORE_CLIENT_LIST_DEBUG |
c8be6d7b | 292 | /* Prevent a race with the store client memory free routines |
edce4d98 | 293 | */ |
0655fa4d | 294 | assert(storeClientIsThisAClient(sc, this)); |
edce4d98 | 295 | #endif |
296 | /* Prepare to make a new temporary request */ | |
0655fa4d | 297 | saveState(); |
1a210de4 EB |
298 | |
299 | // TODO: support collapsed revalidation for Vary-controlled entries | |
300 | const bool collapsingAllowed = Config.onoff.collapsed_forwarding && | |
301 | !Store::Root().smpAware() && | |
302 | http->request->vary_headers.isEmpty(); | |
303 | ||
304 | StoreEntry *entry = nullptr; | |
305 | if (collapsingAllowed) { | |
306 | if ((entry = storeGetPublicByRequest(http->request, ksRevalidation))) | |
307 | entry->lock("clientReplyContext::processExpired#alreadyRevalidating"); | |
308 | } | |
309 | ||
310 | if (entry) { | |
76d61119 | 311 | entry->ensureMemObject(url, http->log_uri, http->request->method); |
1a210de4 EB |
312 | debugs(88, 5, "collapsed on existing revalidation entry: " << *entry); |
313 | collapsedRevalidation = crSlave; | |
314 | } else { | |
315 | entry = storeCreateEntry(url, | |
316 | http->log_uri, http->request->flags, http->request->method); | |
317 | /* NOTE, don't call StoreEntry->lock(), storeCreateEntry() does it */ | |
318 | ||
319 | if (collapsingAllowed) { | |
320 | debugs(88, 5, "allow other revalidation requests to collapse on " << *entry); | |
321 | Store::Root().allowCollapsing(entry, http->request->flags, | |
322 | http->request->method); | |
323 | collapsedRevalidation = crInitiator; | |
324 | } else { | |
325 | collapsedRevalidation = crNone; | |
326 | } | |
327 | } | |
328 | ||
0655fa4d | 329 | sc = storeClientListAdd(entry, this); |
9a0a18de | 330 | #if USE_DELAY_POOLS |
edce4d98 | 331 | /* delay_id is already set on original store client */ |
0655fa4d | 332 | sc->setDelayId(DelayId::DelayClient(http)); |
edce4d98 | 333 | #endif |
62e76326 | 334 | |
438b41ba | 335 | http->request->lastmod = lastmod; |
46017fdd | 336 | |
789217a2 | 337 | if (!http->request->header.has(Http::HdrType::IF_NONE_MATCH)) { |
46017fdd CT |
338 | ETag etag = {NULL, -1}; // TODO: make that a default ETag constructor |
339 | if (old_entry->hasEtag(etag) && !etag.weak) | |
340 | http->request->etag = etag.str; | |
341 | } | |
342 | ||
438b41ba | 343 | debugs(88, 5, "lastmod " << entry->lastModified()); |
86a2f789 | 344 | http->storeEntry(entry); |
c8be6d7b | 345 | assert(http->out.offset == 0); |
9174ba3d | 346 | assert(http->request->clientConnectionManager == http->getConn()); |
655daa06 | 347 | |
1a210de4 EB |
348 | if (collapsedRevalidation != crSlave) { |
349 | /* | |
350 | * A refcounted pointer so that FwdState stays around as long as | |
351 | * this clientReplyContext does | |
352 | */ | |
353 | Comm::ConnectionPointer conn = http->getConn() != NULL ? http->getConn()->clientConnection : NULL; | |
354 | FwdState::Start(conn, http->storeEntry(), http->request, http->al); | |
355 | } | |
edce4d98 | 356 | /* Register with storage manager to receive updates when data comes in. */ |
62e76326 | 357 | |
edce4d98 | 358 | if (EBIT_TEST(entry->flags, ENTRY_ABORTED)) |
fa84c01d | 359 | debugs(88, DBG_CRITICAL, "clientReplyContext::processExpired: Found ENTRY_ABORTED object"); |
62e76326 | 360 | |
c8be6d7b | 361 | { |
62e76326 | 362 | /* start counting the length from 0 */ |
8bcf08e0 FC |
363 | StoreIOBuffer localTempBuffer(HTTP_REQBUF_SZ, 0, tempbuf); |
364 | storeClientCopy(sc, entry, localTempBuffer, HandleIMSReply, this); | |
edce4d98 | 365 | } |
366 | } | |
367 | ||
528b2c61 | 368 | void |
369 | clientReplyContext::sendClientUpstreamResponse() | |
370 | { | |
371 | StoreIOBuffer tempresult; | |
0655fa4d | 372 | removeStoreReference(&old_sc, &old_entry); |
2324cda2 | 373 | /* here the data to send is the data we just received */ |
528b2c61 | 374 | tempBuffer.offset = 0; |
375 | old_reqsize = 0; | |
0655fa4d | 376 | /* sendMoreData tracks the offset as well. |
528b2c61 | 377 | * Force it back to zero */ |
378 | reqofs = 0; | |
86a2f789 | 379 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 380 | /* TODO: provide sendMoreData with the ready parsed reply */ |
528b2c61 | 381 | tempresult.length = reqsize; |
382 | tempresult.data = tempbuf; | |
0655fa4d | 383 | sendMoreData(tempresult); |
528b2c61 | 384 | } |
385 | ||
edce4d98 | 386 | void |
0655fa4d | 387 | clientReplyContext::HandleIMSReply(void *data, StoreIOBuffer result) |
edce4d98 | 388 | { |
e6ccf245 | 389 | clientReplyContext *context = (clientReplyContext *)data; |
0655fa4d | 390 | context->handleIMSReply(result); |
391 | } | |
62e76326 | 392 | |
0655fa4d | 393 | void |
394 | clientReplyContext::sendClientOldEntry() | |
395 | { | |
396 | /* Get the old request back */ | |
397 | restoreState(); | |
398 | /* here the data to send is in the next nodes buffers already */ | |
86a2f789 | 399 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 400 | /* sendMoreData tracks the offset as well. |
401 | * Force it back to zero */ | |
402 | reqofs = 0; | |
403 | StoreIOBuffer tempresult (reqsize, reqofs, next()->readBuffer.data); | |
404 | sendMoreData(tempresult); | |
405 | } | |
62e76326 | 406 | |
1d7ab0f4 | 407 | /* This is the workhorse of the HandleIMSReply callback. |
408 | * | |
409 | * It is called when we've got data back from the origin following our | |
410 | * IMS request to revalidate a stale entry. | |
411 | */ | |
0655fa4d | 412 | void |
1d7ab0f4 | 413 | clientReplyContext::handleIMSReply(StoreIOBuffer result) |
0655fa4d | 414 | { |
1d7ab0f4 | 415 | if (deleting) |
416 | return; | |
62e76326 | 417 | |
eace013e | 418 | debugs(88, 3, http->storeEntry()->url() << ", " << (long unsigned) result.length << " bytes"); |
62e76326 | 419 | |
1d7ab0f4 | 420 | if (http->storeEntry() == NULL) |
421 | return; | |
07947ad8 | 422 | |
1d7ab0f4 | 423 | if (result.flags.error && !EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) |
424 | return; | |
62e76326 | 425 | |
39fe14b2 EB |
426 | if (collapsedRevalidation == crSlave && !http->storeEntry()->mayStartHitting()) { |
427 | debugs(88, 3, "CF slave hit private non-shareable " << *http->storeEntry() << ". MISS"); | |
096c9df3 EB |
428 | // restore context to meet processMiss() expectations |
429 | restoreState(); | |
430 | http->logType = LOG_TCP_MISS; | |
431 | processMiss(); | |
432 | return; | |
433 | } | |
434 | ||
1d7ab0f4 | 435 | /* update size of the request */ |
436 | reqsize = result.length + reqofs; | |
62e76326 | 437 | |
9b769c67 | 438 | const Http::StatusCode status = http->storeEntry()->getReply()->sline.status(); |
62e76326 | 439 | |
1d7ab0f4 | 440 | // request to origin was aborted |
441 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) { | |
eace013e | 442 | debugs(88, 3, "request to origin aborted '" << http->storeEntry()->url() << "', sending old entry to client"); |
7948b784 | 443 | http->logType = LOG_TCP_REFRESH_FAIL_OLD; |
1d7ab0f4 | 444 | sendClientOldEntry(); |
0655fa4d | 445 | } |
62e76326 | 446 | |
abf396ec | 447 | const HttpReply *old_rep = old_entry->getReply(); |
62e76326 | 448 | |
b297bcd0 | 449 | // origin replied 304 |
955394ce | 450 | if (status == Http::scNotModified) { |
26ac0430 | 451 | http->logType = LOG_TCP_REFRESH_UNMODIFIED; |
e857372a | 452 | http->request->flags.staleIfHit = false; // old_entry is no longer stale |
045a76ab | 453 | |
26ac0430 | 454 | // update headers on existing entry |
abf396ec | 455 | Store::Root().updateOnNotModified(old_entry, *http->storeEntry()); |
62e76326 | 456 | |
26ac0430 | 457 | // if client sent IMS |
62e76326 | 458 | |
438b41ba | 459 | if (http->request->flags.ims && !old_entry->modifiedSince(http->request->ims, http->request->imslen)) { |
26ac0430 | 460 | // forward the 304 from origin |
eace013e | 461 | debugs(88, 3, "origin replied 304, revalidating existing entry and forwarding 304 to client"); |
26ac0430 AJ |
462 | sendClientUpstreamResponse(); |
463 | } else { | |
464 | // send existing entry, it's still valid | |
eace013e | 465 | debugs(88, 3, "origin replied 304, revalidating existing entry and sending " << |
9b769c67 | 466 | old_rep->sline.status() << " to client"); |
26ac0430 AJ |
467 | sendClientOldEntry(); |
468 | } | |
b297bcd0 | 469 | } |
62e76326 | 470 | |
b297bcd0 | 471 | // origin replied with a non-error code |
955394ce | 472 | else if (status > Http::scNone && status < Http::scInternalServerError) { |
eace013e EB |
473 | const HttpReply *new_rep = http->storeEntry()->getReply(); |
474 | // RFC 7234 section 4: a cache MUST use the most recent response | |
475 | // (as determined by the Date header field) | |
476 | if (new_rep->olderThan(old_rep)) { | |
477 | http->logType.err.ignored = true; | |
478 | debugs(88, 3, "origin replied " << status << | |
479 | " but with an older date header, sending old entry (" << | |
480 | old_rep->sline.status() << ") to client"); | |
481 | sendClientOldEntry(); | |
482 | } else { | |
483 | http->logType = LOG_TCP_REFRESH_MODIFIED; | |
484 | debugs(88, 3, "origin replied " << status << | |
485 | ", replacing existing entry and forwarding to client"); | |
1a210de4 | 486 | |
eace013e EB |
487 | if (collapsedRevalidation) |
488 | http->storeEntry()->clearPublicKeyScope(); | |
1a210de4 | 489 | |
eace013e EB |
490 | sendClientUpstreamResponse(); |
491 | } | |
b297bcd0 | 492 | } |
62e76326 | 493 | |
b297bcd0 | 494 | // origin replied with an error |
450fe1cb | 495 | else if (http->request->flags.failOnValidationError) { |
7948b784 | 496 | http->logType = LOG_TCP_REFRESH_FAIL_ERR; |
eace013e | 497 | debugs(88, 3, "origin replied with error " << status << |
7948b784 AR |
498 | ", forwarding to client due to fail_on_validation_err"); |
499 | sendClientUpstreamResponse(); | |
500 | } else { | |
26ac0430 | 501 | // ignore and let client have old entry |
7948b784 | 502 | http->logType = LOG_TCP_REFRESH_FAIL_OLD; |
eace013e | 503 | debugs(88, 3, "origin replied with error " << |
9b769c67 | 504 | status << ", sending old entry (" << old_rep->sline.status() << ") to client"); |
26ac0430 | 505 | sendClientOldEntry(); |
1d7ab0f4 | 506 | } |
edce4d98 | 507 | } |
508 | ||
82afb125 FC |
509 | SQUIDCEXTERN CSR clientGetMoreData; |
510 | SQUIDCEXTERN CSD clientReplyDetach; | |
edce4d98 | 511 | |
7d5f62a4 AJ |
512 | /** |
513 | * clientReplyContext::cacheHit Should only be called until the HTTP reply headers | |
edce4d98 | 514 | * have been parsed. Normally this should be a single call, but |
515 | * it might take more than one. As soon as we have the headers, | |
0655fa4d | 516 | * we hand off to clientSendMoreData, processExpired, or |
517 | * processMiss. | |
edce4d98 | 518 | */ |
519 | void | |
0655fa4d | 520 | clientReplyContext::CacheHit(void *data, StoreIOBuffer result) |
edce4d98 | 521 | { |
e6ccf245 | 522 | clientReplyContext *context = (clientReplyContext *)data; |
7d5f62a4 | 523 | context->cacheHit(result); |
0655fa4d | 524 | } |
525 | ||
7d5f62a4 AJ |
526 | /** |
527 | * Process a possible cache HIT. | |
528 | */ | |
0655fa4d | 529 | void |
530 | clientReplyContext::cacheHit(StoreIOBuffer result) | |
531 | { | |
7d5f62a4 | 532 | /** Ignore if the HIT object is being deleted. */ |
1b7514d9 AJ |
533 | if (deleting) { |
534 | debugs(88, 3, "HIT object being deleted. Ignore the HIT."); | |
045a76ab | 535 | return; |
1b7514d9 | 536 | } |
045a76ab | 537 | |
86a2f789 | 538 | StoreEntry *e = http->storeEntry(); |
045a76ab | 539 | |
190154cf | 540 | HttpRequest *r = http->request; |
045a76ab | 541 | |
4a7a3d56 | 542 | debugs(88, 3, "clientCacheHit: " << http->uri << ", " << result.length << " bytes"); |
62e76326 | 543 | |
86a2f789 | 544 | if (http->storeEntry() == NULL) { |
bf8fe701 | 545 | debugs(88, 3, "clientCacheHit: request aborted"); |
62e76326 | 546 | return; |
c8be6d7b | 547 | } else if (result.flags.error) { |
62e76326 | 548 | /* swap in failure */ |
bf8fe701 | 549 | debugs(88, 3, "clientCacheHit: swapin failure for " << http->uri); |
62e76326 | 550 | http->logType = LOG_TCP_SWAPFAIL_MISS; |
86a2f789 | 551 | removeClientStoreReference(&sc, http); |
0655fa4d | 552 | processMiss(); |
62e76326 | 553 | return; |
edce4d98 | 554 | } |
62e76326 | 555 | |
096c9df3 EB |
556 | // The previously identified hit suddenly became unsharable! |
557 | // This is common for collapsed forwarding slaves but might also | |
558 | // happen to regular hits because we are called asynchronously. | |
39fe14b2 | 559 | if (!e->mayStartHitting()) { |
096c9df3 EB |
560 | debugs(88, 3, "unsharable " << *e << ". MISS"); |
561 | http->logType = LOG_TCP_MISS; | |
562 | processMiss(); | |
563 | return; | |
564 | } | |
565 | ||
d3b3ab85 | 566 | if (result.length == 0) { |
1b7514d9 | 567 | debugs(88, 5, "store IO buffer has no content. MISS"); |
62e76326 | 568 | /* the store couldn't get enough data from the file for us to id the |
569 | * object | |
570 | */ | |
571 | /* treat as a miss */ | |
572 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 573 | processMiss(); |
62e76326 | 574 | return; |
d3b3ab85 | 575 | } |
62e76326 | 576 | |
edce4d98 | 577 | assert(!EBIT_TEST(e->flags, ENTRY_ABORTED)); |
578 | /* update size of the request */ | |
0655fa4d | 579 | reqsize = result.length + reqofs; |
62e76326 | 580 | |
edce4d98 | 581 | /* |
582 | * Got the headers, now grok them | |
583 | */ | |
91369933 | 584 | assert(http->logType.oldType == LOG_TCP_HIT); |
62e76326 | 585 | |
851feda6 | 586 | if (http->request->storeId().cmp(e->mem_obj->storeId()) != 0) { |
c877c0bc | 587 | debugs(33, DBG_IMPORTANT, "clientProcessHit: URL mismatch, '" << e->mem_obj->storeId() << "' != '" << http->request->storeId() << "'"); |
b8a899c0 | 588 | http->logType = LOG_TCP_MISS; // we lack a more precise LOG_*_MISS code |
cdd4e1c1 | 589 | processMiss(); |
590 | return; | |
591 | } | |
592 | ||
edce4d98 | 593 | switch (varyEvaluateMatch(e, r)) { |
62e76326 | 594 | |
edce4d98 | 595 | case VARY_NONE: |
62e76326 | 596 | /* No variance detected. Continue as normal */ |
597 | break; | |
598 | ||
edce4d98 | 599 | case VARY_MATCH: |
62e76326 | 600 | /* This is the correct entity for this request. Continue */ |
bf8fe701 | 601 | debugs(88, 2, "clientProcessHit: Vary MATCH!"); |
62e76326 | 602 | break; |
603 | ||
edce4d98 | 604 | case VARY_OTHER: |
62e76326 | 605 | /* This is not the correct entity for this request. We need |
606 | * to requery the cache. | |
607 | */ | |
86a2f789 | 608 | removeClientStoreReference(&sc, http); |
62e76326 | 609 | e = NULL; |
610 | /* Note: varyEvalyateMatch updates the request with vary information | |
611 | * so we only get here once. (it also takes care of cancelling loops) | |
612 | */ | |
26ac0430 | 613 | debugs(88, 2, "clientProcessHit: Vary detected!"); |
0655fa4d | 614 | clientGetMoreData(ourNode, http); |
62e76326 | 615 | return; |
616 | ||
edce4d98 | 617 | case VARY_CANCEL: |
62e76326 | 618 | /* varyEvaluateMatch found a object loop. Process as miss */ |
e0236918 | 619 | debugs(88, DBG_IMPORTANT, "clientProcessHit: Vary object loop!"); |
b8a899c0 | 620 | http->logType = LOG_TCP_MISS; // we lack a more precise LOG_*_MISS code |
0655fa4d | 621 | processMiss(); |
62e76326 | 622 | return; |
edce4d98 | 623 | } |
62e76326 | 624 | |
c2a7cefd | 625 | if (r->method == Http::METHOD_PURGE) { |
1b7514d9 | 626 | debugs(88, 5, "PURGE gets a HIT"); |
86a2f789 | 627 | removeClientStoreReference(&sc, http); |
62e76326 | 628 | e = NULL; |
0655fa4d | 629 | purgeRequest(); |
62e76326 | 630 | return; |
edce4d98 | 631 | } |
62e76326 | 632 | |
1b7514d9 AJ |
633 | if (e->checkNegativeHit() && !r->flags.noCacheHack()) { |
634 | debugs(88, 5, "negative-HIT"); | |
62e76326 | 635 | http->logType = LOG_TCP_NEGATIVE_HIT; |
0655fa4d | 636 | sendMoreData(result); |
ec4011ac | 637 | return; |
70706149 AR |
638 | } else if (blockedHit()) { |
639 | debugs(88, 5, "send_hit forces a MISS"); | |
640 | http->logType = LOG_TCP_MISS; | |
641 | processMiss(); | |
642 | return; | |
bcfba8bd | 643 | } else if (!http->flags.internal && refreshCheckHTTP(e, r)) { |
bf8fe701 | 644 | debugs(88, 5, "clientCacheHit: in refreshCheck() block"); |
62e76326 | 645 | /* |
646 | * We hold a stale copy; it needs to be validated | |
647 | */ | |
648 | /* | |
450fe1cb | 649 | * The 'needValidation' flag is used to prevent forwarding |
62e76326 | 650 | * loops between siblings. If our copy of the object is stale, |
651 | * then we should probably only use parents for the validation | |
652 | * request. Otherwise two siblings could generate a loop if | |
653 | * both have a stale version of the object. | |
654 | */ | |
e857372a | 655 | r->flags.needValidation = true; |
62e76326 | 656 | |
438b41ba EB |
657 | if (e->lastModified() < 0) { |
658 | debugs(88, 3, "validate HIT object? NO. Can't calculate entry modification time. Do MISS."); | |
62e76326 | 659 | /* |
438b41ba EB |
660 | * We cannot revalidate entries without knowing their |
661 | * modification time. | |
662 | * XXX: BUG 1890 objects without Date do not get one added. | |
62e76326 | 663 | */ |
664 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 665 | processMiss(); |
450fe1cb | 666 | } else if (r->flags.noCache) { |
86310427 | 667 | debugs(88, 3, "validate HIT object? NO. Client sent CC:no-cache. Do CLIENT_REFRESH_MISS"); |
62e76326 | 668 | /* |
669 | * This did not match a refresh pattern that overrides no-cache | |
670 | * we should honour the client no-cache header. | |
671 | */ | |
672 | http->logType = LOG_TCP_CLIENT_REFRESH_MISS; | |
0655fa4d | 673 | processMiss(); |
ec4568e3 | 674 | } else if (r->url.getScheme() == AnyP::PROTO_HTTP || r->url.getScheme() == AnyP::PROTO_HTTPS) { |
86310427 | 675 | debugs(88, 3, "validate HIT object? YES."); |
62e76326 | 676 | /* |
677 | * Object needs to be revalidated | |
678 | * XXX This could apply to FTP as well, if Last-Modified is known. | |
679 | */ | |
0655fa4d | 680 | processExpired(); |
62e76326 | 681 | } else { |
86310427 | 682 | debugs(88, 3, "validate HIT object? NO. Client protocol non-HTTP. Do MISS."); |
62e76326 | 683 | /* |
684 | * We don't know how to re-validate other protocols. Handle | |
685 | * them as if the object has expired. | |
686 | */ | |
687 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 688 | processMiss(); |
62e76326 | 689 | } |
ec4011ac | 690 | return; |
1b7514d9 AJ |
691 | } else if (r->conditional()) { |
692 | debugs(88, 5, "conditional HIT"); | |
acd68301 GD |
693 | if (processConditional(result)) |
694 | return; | |
695 | } | |
696 | ||
697 | /* | |
698 | * plain ol' cache hit | |
699 | */ | |
700 | debugs(88, 5, "plain old HIT"); | |
62e76326 | 701 | |
9a0a18de | 702 | #if USE_DELAY_POOLS |
acd68301 GD |
703 | if (e->store_status != STORE_OK) |
704 | http->logType = LOG_TCP_MISS; | |
705 | else | |
5bf4d170 | 706 | #endif |
acd68301 GD |
707 | if (e->mem_status == IN_MEMORY) |
708 | http->logType = LOG_TCP_MEM_HIT; | |
709 | else if (Config.onoff.offline) | |
710 | http->logType = LOG_TCP_OFFLINE_HIT; | |
62e76326 | 711 | |
acd68301 | 712 | sendMoreData(result); |
edce4d98 | 713 | } |
714 | ||
7d5f62a4 | 715 | /** |
edce4d98 | 716 | * Prepare to fetch the object as it's a cache miss of some kind. |
717 | */ | |
718 | void | |
0655fa4d | 719 | clientReplyContext::processMiss() |
edce4d98 | 720 | { |
edce4d98 | 721 | char *url = http->uri; |
190154cf | 722 | HttpRequest *r = http->request; |
edce4d98 | 723 | ErrorState *err = NULL; |
7f06a3d8 | 724 | debugs(88, 4, r->method << ' ' << url); |
7d5f62a4 AJ |
725 | |
726 | /** | |
edce4d98 | 727 | * We might have a left-over StoreEntry from a failed cache hit |
728 | * or IMS request. | |
729 | */ | |
86a2f789 | 730 | if (http->storeEntry()) { |
731 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_SPECIAL)) { | |
fa84c01d | 732 | debugs(88, DBG_CRITICAL, "clientProcessMiss: miss on a special object (" << url << ")."); |
91369933 | 733 | debugs(88, DBG_CRITICAL, "\tlog_type = " << http->logType.c_str()); |
3900307b | 734 | http->storeEntry()->dump(1); |
62e76326 | 735 | } |
736 | ||
86a2f789 | 737 | removeClientStoreReference(&sc, http); |
edce4d98 | 738 | } |
62e76326 | 739 | |
7d5f62a4 | 740 | /** Check if its a PURGE request to be actioned. */ |
c2a7cefd | 741 | if (r->method == Http::METHOD_PURGE) { |
0655fa4d | 742 | purgeRequest(); |
62e76326 | 743 | return; |
edce4d98 | 744 | } |
914b89a2 | 745 | |
7d5f62a4 | 746 | /** Check if its an 'OTHER' request. Purge all cached entries if so and continue. */ |
c2a7cefd | 747 | if (r->method == Http::METHOD_OTHER) { |
26ac0430 | 748 | purgeAllCached(); |
60745f24 | 749 | } |
62e76326 | 750 | |
7d5f62a4 | 751 | /** Check if 'only-if-cached' flag is set. Action if so. */ |
0655fa4d | 752 | if (http->onlyIfCached()) { |
753 | processOnlyIfCachedMiss(); | |
62e76326 | 754 | return; |
edce4d98 | 755 | } |
62e76326 | 756 | |
6b4edefb | 757 | Comm::ConnectionPointer conn = http->getConn() != nullptr ? http->getConn()->clientConnection : nullptr; |
42829656 | 758 | /// Deny loops |
450fe1cb | 759 | if (r->flags.loopDetected) { |
955394ce | 760 | http->al->http.code = Http::scForbidden; |
6b4edefb CT |
761 | Ip::Address tmp_noaddr; |
762 | tmp_noaddr.setNoAddr(); | |
763 | err = clientBuildError(ERR_ACCESS_DENIED, Http::scForbidden, nullptr, conn ? conn->remote : tmp_noaddr, http->request); | |
f206b652 | 764 | createStoreEntry(r->method, RequestFlags()); |
86a2f789 | 765 | errorAppendEntry(http->storeEntry(), err); |
0655fa4d | 766 | triggerInitialStoreRead(); |
62e76326 | 767 | return; |
edce4d98 | 768 | } else { |
26ac0430 | 769 | assert(http->out.offset == 0); |
0655fa4d | 770 | createStoreEntry(r->method, r->flags); |
771 | triggerInitialStoreRead(); | |
62e76326 | 772 | |
773 | if (http->redirect.status) { | |
06a5ae20 | 774 | HttpReply *rep = new HttpReply; |
62e76326 | 775 | http->logType = LOG_TCP_REDIRECT; |
d88e3c49 | 776 | http->storeEntry()->releaseRequest(); |
06a5ae20 | 777 | rep->redirect(http->redirect.status, http->redirect.location); |
db237875 | 778 | http->storeEntry()->replaceHttpReply(rep); |
86a2f789 | 779 | http->storeEntry()->complete(); |
62e76326 | 780 | return; |
781 | } | |
782 | ||
9174ba3d | 783 | assert(r->clientConnectionManager == http->getConn()); |
655daa06 | 784 | |
7d5f62a4 | 785 | /** Start forwarding to get the new object from network */ |
4bf68cfa | 786 | FwdState::Start(conn, http->storeEntry(), r, http->al); |
edce4d98 | 787 | } |
788 | } | |
789 | ||
7d5f62a4 | 790 | /** |
edce4d98 | 791 | * client issued a request with an only-if-cached cache-control directive; |
792 | * we did not find a cached object that can be returned without | |
793 | * contacting other servers; | |
794 | * respond with a 504 (Gateway Timeout) as suggested in [RFC 2068] | |
795 | */ | |
0655fa4d | 796 | void |
797 | clientReplyContext::processOnlyIfCachedMiss() | |
edce4d98 | 798 | { |
7f06a3d8 | 799 | debugs(88, 4, http->request->method << ' ' << http->uri); |
f11c8e2f | 800 | http->al->http.code = Http::scGatewayTimeout; |
6b4edefb CT |
801 | Ip::Address tmp_noaddr; |
802 | tmp_noaddr.setNoAddr(); | |
f11c8e2f | 803 | ErrorState *err = clientBuildError(ERR_ONLY_IF_CACHED_MISS, Http::scGatewayTimeout, NULL, |
6b4edefb CT |
804 | http->getConn() ? http->getConn()->clientConnection->remote : tmp_noaddr, |
805 | http->request); | |
86a2f789 | 806 | removeClientStoreReference(&sc, http); |
0655fa4d | 807 | startError(err); |
edce4d98 | 808 | } |
809 | ||
79c8035e | 810 | /// process conditional request from client |
acd68301 | 811 | bool |
79c8035e AR |
812 | clientReplyContext::processConditional(StoreIOBuffer &result) |
813 | { | |
a2bd457d | 814 | StoreEntry *const e = http->storeEntry(); |
79c8035e | 815 | |
9b769c67 | 816 | if (e->getReply()->sline.status() != Http::scOkay) { |
acd68301 | 817 | debugs(88, 4, "Reply code " << e->getReply()->sline.status() << " != 200"); |
79c8035e AR |
818 | http->logType = LOG_TCP_MISS; |
819 | processMiss(); | |
acd68301 | 820 | return true; |
79c8035e AR |
821 | } |
822 | ||
823 | HttpRequest &r = *http->request; | |
824 | ||
789217a2 | 825 | if (r.header.has(Http::HdrType::IF_MATCH) && !e->hasIfMatchEtag(r)) { |
79c8035e AR |
826 | // RFC 2616: reply with 412 Precondition Failed if If-Match did not match |
827 | sendPreconditionFailedError(); | |
acd68301 | 828 | return true; |
79c8035e AR |
829 | } |
830 | ||
789217a2 | 831 | if (r.header.has(Http::HdrType::IF_NONE_MATCH)) { |
787ea68c GD |
832 | // RFC 7232: If-None-Match recipient MUST ignore IMS |
833 | r.flags.ims = false; | |
834 | r.ims = -1; | |
835 | r.imslen = 0; | |
836 | r.header.delById(Http::HdrType::IF_MODIFIED_SINCE); | |
79c8035e | 837 | |
787ea68c | 838 | if (e->hasIfNoneMatchEtag(r)) { |
a2bd457d | 839 | sendNotModifiedOrPreconditionFailedError(); |
acd68301 | 840 | return true; |
79c8035e AR |
841 | } |
842 | ||
787ea68c GD |
843 | // None-Match is true (no ETag matched); treat as an unconditional hit |
844 | return false; | |
79c8035e AR |
845 | } |
846 | ||
45e5102d | 847 | if (r.flags.ims) { |
79c8035e | 848 | // handle If-Modified-Since requests from the client |
438b41ba | 849 | if (e->modifiedSince(r.ims, r.imslen)) { |
2e2ef19a SM |
850 | // Modified-Since is true; treat as an unconditional hit |
851 | return false; | |
79c8035e | 852 | |
acd68301 GD |
853 | } else { |
854 | // otherwise reply with 304 Not Modified | |
855 | sendNotModified(); | |
856 | } | |
857 | return true; | |
79c8035e | 858 | } |
acd68301 GD |
859 | |
860 | return false; | |
79c8035e AR |
861 | } |
862 | ||
70706149 AR |
863 | /// whether squid.conf send_hit prevents us from serving this hit |
864 | bool | |
865 | clientReplyContext::blockedHit() const | |
866 | { | |
867 | if (!Config.accessList.sendHit) | |
868 | return false; // hits are not blocked by default | |
869 | ||
870 | if (http->flags.internal) | |
871 | return false; // internal content "hits" cannot be blocked | |
872 | ||
873 | if (const HttpReply *rep = http->storeEntry()->getReply()) { | |
829030b5 | 874 | std::unique_ptr<ACLFilledChecklist> chl(clientAclChecklistCreate(Config.accessList.sendHit, http)); |
70706149 AR |
875 | chl->reply = const_cast<HttpReply*>(rep); // ACLChecklist API bug |
876 | HTTPMSGLOCK(chl->reply); | |
06bf5384 | 877 | return !chl->fastCheck().allowed(); // when in doubt, block |
70706149 AR |
878 | } |
879 | ||
880 | // This does not happen, I hope, because we are called from CacheHit, which | |
881 | // is called via a storeClientCopy() callback, and store should initialize | |
882 | // the reply before calling that callback. | |
883 | debugs(88, 3, "Missing reply!"); | |
884 | return false; | |
885 | } | |
886 | ||
edce4d98 | 887 | void |
e6ccf245 | 888 | clientReplyContext::purgeRequestFindObjectToPurge() |
26ac0430 | 889 | { |
e6ccf245 | 890 | /* Try to find a base entry */ |
be4d35dc | 891 | http->flags.purging = true; |
e6ccf245 | 892 | lookingforstore = 1; |
26ac0430 AJ |
893 | |
894 | // TODO: can we use purgeAllCached() here instead of doing the | |
895 | // getPublicByRequestMethod() dance? | |
c2a7cefd | 896 | StoreEntry::getPublicByRequestMethod(this, http->request, Http::METHOD_GET); |
e6ccf245 | 897 | } |
898 | ||
c1520b67 AJ |
899 | // Purges all entries with a given url |
900 | // TODO: move to SideAgent parent, when we have one | |
60745f24 | 901 | /* |
902 | * We probably cannot purge Vary-affected responses because their MD5 | |
903 | * keys depend on vary headers. | |
904 | */ | |
c1520b67 | 905 | void |
90bd689c | 906 | purgeEntriesByUrl(HttpRequest * req, const char *url) |
c1520b67 | 907 | { |
8dceeee3 BR |
908 | #if USE_HTCP |
909 | bool get_or_head_sent = false; | |
910 | #endif | |
26ac0430 | 911 | |
c2a7cefd AJ |
912 | for (HttpRequestMethod m(Http::METHOD_NONE); m != Http::METHOD_ENUM_END; ++m) { |
913 | if (m.respMaybeCacheable()) { | |
c1520b67 | 914 | if (StoreEntry *entry = storeGetPublic(url, m)) { |
7f06a3d8 | 915 | debugs(88, 5, "purging " << *entry << ' ' << m << ' ' << url); |
90bd689c | 916 | #if USE_HTCP |
8dceeee3 | 917 | neighborsHtcpClear(entry, url, req, m, HTCP_CLR_INVALIDATION); |
c2a7cefd | 918 | if (m == Http::METHOD_GET || m == Http::METHOD_HEAD) { |
8dceeee3 BR |
919 | get_or_head_sent = true; |
920 | } | |
90bd689c | 921 | #endif |
8dceeee3 | 922 | entry->release(); |
c1520b67 AJ |
923 | } |
924 | } | |
925 | } | |
8dceeee3 BR |
926 | |
927 | #if USE_HTCP | |
928 | if (!get_or_head_sent) { | |
c2a7cefd | 929 | neighborsHtcpClear(NULL, url, req, HttpRequestMethod(Http::METHOD_GET), HTCP_CLR_INVALIDATION); |
8dceeee3 BR |
930 | } |
931 | #endif | |
c1520b67 AJ |
932 | } |
933 | ||
26ac0430 | 934 | void |
60745f24 | 935 | clientReplyContext::purgeAllCached() |
936 | { | |
851feda6 AJ |
937 | // XXX: performance regression, c_str() reallocates |
938 | SBuf url(http->request->effectiveRequestUri()); | |
939 | purgeEntriesByUrl(http->request, url.c_str()); | |
35ececa5 | 940 | } |
60745f24 | 941 | |
e6ccf245 | 942 | void |
3b13a8fd | 943 | clientReplyContext::created(StoreEntry *newEntry) |
e6ccf245 | 944 | { |
945 | if (lookingforstore == 1) | |
62e76326 | 946 | purgeFoundGet(newEntry); |
e6ccf245 | 947 | else if (lookingforstore == 2) |
62e76326 | 948 | purgeFoundHead(newEntry); |
e6ccf245 | 949 | else if (lookingforstore == 3) |
62e76326 | 950 | purgeDoPurgeGet(newEntry); |
e6ccf245 | 951 | else if (lookingforstore == 4) |
62e76326 | 952 | purgeDoPurgeHead(newEntry); |
e6ccf245 | 953 | else if (lookingforstore == 5) |
62e76326 | 954 | identifyFoundObject(newEntry); |
e6ccf245 | 955 | } |
956 | ||
957 | void | |
3b13a8fd | 958 | clientReplyContext::purgeFoundGet(StoreEntry *newEntry) |
e6ccf245 | 959 | { |
960 | if (newEntry->isNull()) { | |
62e76326 | 961 | lookingforstore = 2; |
c2a7cefd | 962 | StoreEntry::getPublicByRequestMethod(this, http->request, Http::METHOD_HEAD); |
e6ccf245 | 963 | } else |
62e76326 | 964 | purgeFoundObject (newEntry); |
e6ccf245 | 965 | } |
966 | ||
967 | void | |
3b13a8fd | 968 | clientReplyContext::purgeFoundHead(StoreEntry *newEntry) |
e6ccf245 | 969 | { |
970 | if (newEntry->isNull()) | |
62e76326 | 971 | purgeDoMissPurge(); |
e6ccf245 | 972 | else |
62e76326 | 973 | purgeFoundObject (newEntry); |
e6ccf245 | 974 | } |
62e76326 | 975 | |
e6ccf245 | 976 | void |
3b13a8fd | 977 | clientReplyContext::purgeFoundObject(StoreEntry *entry) |
e6ccf245 | 978 | { |
979 | assert (entry && !entry->isNull()); | |
e4b9a2f0 | 980 | |
981 | if (EBIT_TEST(entry->flags, ENTRY_SPECIAL)) { | |
982 | http->logType = LOG_TCP_DENIED; | |
6b4edefb CT |
983 | Ip::Address tmp_noaddr; |
984 | tmp_noaddr.setNoAddr(); // TODO: make a global const | |
955394ce | 985 | ErrorState *err = clientBuildError(ERR_ACCESS_DENIED, Http::scForbidden, NULL, |
6b4edefb CT |
986 | http->getConn() ? http->getConn()->clientConnection->remote : tmp_noaddr, |
987 | http->request); | |
e4b9a2f0 | 988 | startError(err); |
c877c0bc | 989 | return; // XXX: leaking unused entry if some store does not keep it |
e4b9a2f0 | 990 | } |
991 | ||
8bcf08e0 | 992 | StoreIOBuffer localTempBuffer; |
62e76326 | 993 | /* Swap in the metadata */ |
86a2f789 | 994 | http->storeEntry(entry); |
34266cde | 995 | |
1bfe9ade | 996 | http->storeEntry()->lock("clientReplyContext::purgeFoundObject"); |
76d61119 | 997 | http->storeEntry()->ensureMemObject(storeId(), http->log_uri, |
c877c0bc | 998 | http->request->method); |
34266cde | 999 | |
86a2f789 | 1000 | sc = storeClientListAdd(http->storeEntry(), this); |
34266cde | 1001 | |
62e76326 | 1002 | http->logType = LOG_TCP_HIT; |
34266cde | 1003 | |
62e76326 | 1004 | reqofs = 0; |
34266cde | 1005 | |
8bcf08e0 | 1006 | localTempBuffer.offset = http->out.offset; |
34266cde | 1007 | |
8bcf08e0 | 1008 | localTempBuffer.length = next()->readBuffer.length; |
34266cde | 1009 | |
8bcf08e0 | 1010 | localTempBuffer.data = next()->readBuffer.data; |
34266cde | 1011 | |
86a2f789 | 1012 | storeClientCopy(sc, http->storeEntry(), |
8bcf08e0 | 1013 | localTempBuffer, CacheHit, this); |
e6ccf245 | 1014 | } |
1015 | ||
1016 | void | |
1017 | clientReplyContext::purgeRequest() | |
edce4d98 | 1018 | { |
bf8fe701 | 1019 | debugs(88, 3, "Config2.onoff.enable_purge = " << |
1020 | Config2.onoff.enable_purge); | |
62e76326 | 1021 | |
edce4d98 | 1022 | if (!Config2.onoff.enable_purge) { |
62e76326 | 1023 | http->logType = LOG_TCP_DENIED; |
6b4edefb CT |
1024 | Ip::Address tmp_noaddr; |
1025 | tmp_noaddr.setNoAddr(); | |
1026 | ErrorState *err = clientBuildError(ERR_ACCESS_DENIED, Http::scForbidden, NULL, | |
1027 | http->getConn() ? http->getConn()->clientConnection->remote : tmp_noaddr, http->request); | |
0655fa4d | 1028 | startError(err); |
62e76326 | 1029 | return; |
edce4d98 | 1030 | } |
62e76326 | 1031 | |
edce4d98 | 1032 | /* Release both IP cache */ |
5c51bffb | 1033 | ipcacheInvalidate(http->request->url.host()); |
edce4d98 | 1034 | |
e6ccf245 | 1035 | if (!http->flags.purging) |
62e76326 | 1036 | purgeRequestFindObjectToPurge(); |
e6ccf245 | 1037 | else |
62e76326 | 1038 | purgeDoMissPurge(); |
e6ccf245 | 1039 | } |
1040 | ||
1041 | void | |
1042 | clientReplyContext::purgeDoMissPurge() | |
1043 | { | |
29b8d8d6 | 1044 | http->logType = LOG_TCP_MISS; |
e6ccf245 | 1045 | lookingforstore = 3; |
c2a7cefd | 1046 | StoreEntry::getPublicByRequestMethod(this,http->request, Http::METHOD_GET); |
e6ccf245 | 1047 | } |
1048 | ||
1049 | void | |
3b13a8fd | 1050 | clientReplyContext::purgeDoPurgeGet(StoreEntry *newEntry) |
e6ccf245 | 1051 | { |
1052 | assert (newEntry); | |
1053 | /* Move to new() when that is created */ | |
955394ce | 1054 | purgeStatus = Http::scNotFound; |
e6ccf245 | 1055 | |
1056 | if (!newEntry->isNull()) { | |
62e76326 | 1057 | /* Release the cached URI */ |
bf8fe701 | 1058 | debugs(88, 4, "clientPurgeRequest: GET '" << newEntry->url() << "'" ); |
8dceeee3 | 1059 | #if USE_HTCP |
c2a7cefd | 1060 | neighborsHtcpClear(newEntry, NULL, http->request, HttpRequestMethod(Http::METHOD_GET), HTCP_CLR_PURGE); |
8dceeee3 | 1061 | #endif |
5f33b71d | 1062 | newEntry->release(); |
955394ce | 1063 | purgeStatus = Http::scOkay; |
edce4d98 | 1064 | } |
62e76326 | 1065 | |
e6ccf245 | 1066 | lookingforstore = 4; |
c2a7cefd | 1067 | StoreEntry::getPublicByRequestMethod(this, http->request, Http::METHOD_HEAD); |
e6ccf245 | 1068 | } |
1069 | ||
1070 | void | |
3b13a8fd | 1071 | clientReplyContext::purgeDoPurgeHead(StoreEntry *newEntry) |
e6ccf245 | 1072 | { |
4fc0ac76 | 1073 | if (newEntry && !newEntry->isNull()) { |
851feda6 | 1074 | debugs(88, 4, "HEAD " << newEntry->url()); |
8dceeee3 | 1075 | #if USE_HTCP |
c2a7cefd | 1076 | neighborsHtcpClear(newEntry, NULL, http->request, HttpRequestMethod(Http::METHOD_HEAD), HTCP_CLR_PURGE); |
8dceeee3 | 1077 | #endif |
5f33b71d | 1078 | newEntry->release(); |
955394ce | 1079 | purgeStatus = Http::scOkay; |
edce4d98 | 1080 | } |
62e76326 | 1081 | |
edce4d98 | 1082 | /* And for Vary, release the base URI if none of the headers was included in the request */ |
90ab8f20 AJ |
1083 | if (!http->request->vary_headers.isEmpty() |
1084 | && http->request->vary_headers.find('=') != SBuf::npos) { | |
851feda6 AJ |
1085 | // XXX: performance regression, c_str() reallocates |
1086 | SBuf tmp(http->request->effectiveRequestUri()); | |
1087 | StoreEntry *entry = storeGetPublic(tmp.c_str(), Http::METHOD_GET); | |
62e76326 | 1088 | |
1089 | if (entry) { | |
851feda6 | 1090 | debugs(88, 4, "Vary GET " << entry->url()); |
8dceeee3 | 1091 | #if USE_HTCP |
c2a7cefd | 1092 | neighborsHtcpClear(entry, NULL, http->request, HttpRequestMethod(Http::METHOD_GET), HTCP_CLR_PURGE); |
8dceeee3 | 1093 | #endif |
5f33b71d | 1094 | entry->release(); |
955394ce | 1095 | purgeStatus = Http::scOkay; |
62e76326 | 1096 | } |
1097 | ||
851feda6 | 1098 | entry = storeGetPublic(tmp.c_str(), Http::METHOD_HEAD); |
62e76326 | 1099 | |
1100 | if (entry) { | |
851feda6 | 1101 | debugs(88, 4, "Vary HEAD " << entry->url()); |
8dceeee3 | 1102 | #if USE_HTCP |
c2a7cefd | 1103 | neighborsHtcpClear(entry, NULL, http->request, HttpRequestMethod(Http::METHOD_HEAD), HTCP_CLR_PURGE); |
8dceeee3 | 1104 | #endif |
5f33b71d | 1105 | entry->release(); |
955394ce | 1106 | purgeStatus = Http::scOkay; |
62e76326 | 1107 | } |
edce4d98 | 1108 | } |
62e76326 | 1109 | |
edce4d98 | 1110 | /* |
1111 | * Make a new entry to hold the reply to be written | |
1112 | * to the client. | |
1113 | */ | |
528b2c61 | 1114 | /* FIXME: This doesn't need to go through the store. Simply |
1115 | * push down the client chain | |
1116 | */ | |
f206b652 | 1117 | createStoreEntry(http->request->method, RequestFlags()); |
62e76326 | 1118 | |
0655fa4d | 1119 | triggerInitialStoreRead(); |
62e76326 | 1120 | |
7dc5f514 | 1121 | HttpReply *rep = new HttpReply; |
11992b6f | 1122 | rep->setHeaders(purgeStatus, NULL, NULL, 0, 0, -1); |
7dc5f514 | 1123 | http->storeEntry()->replaceHttpReply(rep); |
86a2f789 | 1124 | http->storeEntry()->complete(); |
edce4d98 | 1125 | } |
1126 | ||
1127 | void | |
0655fa4d | 1128 | clientReplyContext::traceReply(clientStreamNode * node) |
edce4d98 | 1129 | { |
076df709 | 1130 | clientStreamNode *nextNode = (clientStreamNode *)node->node.next->data; |
8bcf08e0 | 1131 | StoreIOBuffer localTempBuffer; |
f206b652 | 1132 | createStoreEntry(http->request->method, RequestFlags()); |
076df709 FC |
1133 | localTempBuffer.offset = nextNode->readBuffer.offset + headers_sz; |
1134 | localTempBuffer.length = nextNode->readBuffer.length; | |
1135 | localTempBuffer.data = nextNode->readBuffer.data; | |
86a2f789 | 1136 | storeClientCopy(sc, http->storeEntry(), |
8bcf08e0 | 1137 | localTempBuffer, SendMoreData, this); |
d88e3c49 | 1138 | http->storeEntry()->releaseRequest(); |
3900307b | 1139 | http->storeEntry()->buffer(); |
7dc5f514 | 1140 | HttpReply *rep = new HttpReply; |
955394ce | 1141 | rep->setHeaders(Http::scOkay, NULL, "text/plain", http->request->prefixLen(), 0, squid_curtime); |
db237875 | 1142 | http->storeEntry()->replaceHttpReply(rep); |
5cafad19 | 1143 | http->request->swapOut(http->storeEntry()); |
86a2f789 | 1144 | http->storeEntry()->complete(); |
edce4d98 | 1145 | } |
1146 | ||
1147 | #define SENDING_BODY 0 | |
1148 | #define SENDING_HDRSONLY 1 | |
1149 | int | |
0655fa4d | 1150 | clientReplyContext::checkTransferDone() |
edce4d98 | 1151 | { |
86a2f789 | 1152 | StoreEntry *entry = http->storeEntry(); |
62e76326 | 1153 | |
edce4d98 | 1154 | if (entry == NULL) |
62e76326 | 1155 | return 0; |
1156 | ||
1157 | /* | |
edce4d98 | 1158 | * For now, 'done_copying' is used for special cases like |
1159 | * Range and HEAD requests. | |
1160 | */ | |
0655fa4d | 1161 | if (http->flags.done_copying) |
62e76326 | 1162 | return 1; |
1163 | ||
450fe1cb | 1164 | if (http->request->flags.chunkedReply && !flags.complete) { |
4ad60609 AR |
1165 | // last-chunk was not sent |
1166 | return 0; | |
1167 | } | |
1168 | ||
edce4d98 | 1169 | /* |
1170 | * Handle STORE_OK objects. | |
1171 | * objectLen(entry) will be set proprely. | |
26ac0430 | 1172 | * RC: Does objectLen(entry) include the Headers? |
0e3be1ea | 1173 | * RC: Yes. |
edce4d98 | 1174 | */ |
1175 | if (entry->store_status == STORE_OK) { | |
0655fa4d | 1176 | return storeOKTransferDone(); |
e39b9382 | 1177 | } else { |
0655fa4d | 1178 | return storeNotOKTransferDone(); |
edce4d98 | 1179 | } |
e39b9382 | 1180 | } |
1181 | ||
1182 | int | |
1183 | clientReplyContext::storeOKTransferDone() const | |
1184 | { | |
aa1a691e AR |
1185 | assert(http->storeEntry()->objectLen() >= 0); |
1186 | assert(http->storeEntry()->objectLen() >= headers_sz); | |
47f6e231 | 1187 | if (http->out.offset >= http->storeEntry()->objectLen() - headers_sz) { |
26ac0430 AJ |
1188 | debugs(88,3,HERE << "storeOKTransferDone " << |
1189 | " out.offset=" << http->out.offset << | |
1190 | " objectLen()=" << http->storeEntry()->objectLen() << | |
1191 | " headers_sz=" << headers_sz); | |
62e76326 | 1192 | return 1; |
47f6e231 | 1193 | } |
62e76326 | 1194 | |
e39b9382 | 1195 | return 0; |
1196 | } | |
1197 | ||
1198 | int | |
1199 | clientReplyContext::storeNotOKTransferDone() const | |
1200 | { | |
edce4d98 | 1201 | /* |
1202 | * Now, handle STORE_PENDING objects | |
1203 | */ | |
86a2f789 | 1204 | MemObject *mem = http->storeEntry()->mem_obj; |
edce4d98 | 1205 | assert(mem != NULL); |
1206 | assert(http->request != NULL); | |
62e76326 | 1207 | |
a0c227a9 | 1208 | /* mem->reply was wrong because it uses the UPSTREAM header length!!! */ |
e39b9382 | 1209 | if (headers_sz == 0) |
62e76326 | 1210 | /* haven't found end of headers yet */ |
1211 | return 0; | |
e39b9382 | 1212 | |
a0c227a9 AJ |
1213 | const HttpReplyPointer curReply(mem->getReply()); |
1214 | ||
edce4d98 | 1215 | /* |
1216 | * Figure out how much data we are supposed to send. | |
1217 | * If we are sending a body and we don't have a content-length, | |
1218 | * then we must wait for the object to become STORE_OK. | |
1219 | */ | |
8bcf08e0 | 1220 | if (curReply->content_length < 0) |
62e76326 | 1221 | return 0; |
e39b9382 | 1222 | |
ac9f46af | 1223 | uint64_t expectedLength = curReply->content_length + http->out.headers_sz; |
62e76326 | 1224 | |
e39b9382 | 1225 | if (http->out.size < expectedLength) |
62e76326 | 1226 | return 0; |
47f6e231 | 1227 | else { |
26ac0430 AJ |
1228 | debugs(88,3,HERE << "storeNotOKTransferDone " << |
1229 | " out.size=" << http->out.size << | |
1230 | " expectedLength=" << expectedLength); | |
62e76326 | 1231 | return 1; |
47f6e231 | 1232 | } |
edce4d98 | 1233 | } |
1234 | ||
edce4d98 | 1235 | /* A write has completed, what is the next status based on the |
1236 | * canonical request data? | |
1237 | * 1 something is wrong | |
1238 | * 0 nothing is wrong. | |
1239 | * | |
1240 | */ | |
1241 | int | |
59a1efb2 | 1242 | clientHttpRequestStatus(int fd, ClientHttpRequest const *http) |
edce4d98 | 1243 | { |
062f7f4e FC |
1244 | #if SIZEOF_INT64_T == 4 |
1245 | if (http->out.size > 0x7FFF0000) { | |
e0236918 | 1246 | debugs(88, DBG_IMPORTANT, "WARNING: closing FD " << fd << " to prevent out.size counter overflow"); |
6b4edefb CT |
1247 | if (http->getConn()) |
1248 | debugs(88, DBG_IMPORTANT, "\tclient " << http->getConn()->peer); | |
e0236918 FC |
1249 | debugs(88, DBG_IMPORTANT, "\treceived " << http->out.size << " bytes"); |
1250 | debugs(88, DBG_IMPORTANT, "\tURI " << http->log_uri); | |
062f7f4e FC |
1251 | return 1; |
1252 | } | |
1253 | ||
1254 | if (http->out.offset > 0x7FFF0000) { | |
e0236918 | 1255 | debugs(88, DBG_IMPORTANT, "WARNING: closing FD " << fd < " to prevent out.offset counter overflow"); |
6b4edefb CT |
1256 | if (http->getConn()) |
1257 | debugs(88, DBG_IMPORTANT, "\tclient " << http->getConn()->peer); | |
e0236918 FC |
1258 | debugs(88, DBG_IMPORTANT, "\treceived " << http->out.size << " bytes, offset " << http->out.offset); |
1259 | debugs(88, DBG_IMPORTANT, "\tURI " << http->log_uri); | |
062f7f4e FC |
1260 | return 1; |
1261 | } | |
1262 | ||
1263 | #endif | |
edce4d98 | 1264 | return 0; |
1265 | } | |
1266 | ||
62e76326 | 1267 | /* Preconditions: |
edce4d98 | 1268 | * *http is a valid structure. |
1269 | * fd is either -1, or an open fd. | |
1270 | * | |
1271 | * TODO: enumify this | |
1272 | * | |
1273 | * This function is used by any http request sink, to determine the status | |
1274 | * of the object. | |
1275 | */ | |
1276 | clientStream_status_t | |
59a1efb2 | 1277 | clientReplyStatus(clientStreamNode * aNode, ClientHttpRequest * http) |
edce4d98 | 1278 | { |
0655fa4d | 1279 | clientReplyContext *context = dynamic_cast<clientReplyContext *>(aNode->data.getRaw()); |
1280 | assert (context); | |
1281 | assert (context->http == http); | |
1282 | return context->replyStatus(); | |
1283 | } | |
1284 | ||
1285 | clientStream_status_t | |
1286 | clientReplyContext::replyStatus() | |
1287 | { | |
edce4d98 | 1288 | int done; |
1289 | /* Here because lower nodes don't need it */ | |
62e76326 | 1290 | |
3daaed1a | 1291 | if (http->storeEntry() == NULL) { |
1292 | debugs(88, 5, "clientReplyStatus: no storeEntry"); | |
f53969cc | 1293 | return STREAM_FAILED; /* yuck, but what can we do? */ |
3daaed1a | 1294 | } |
62e76326 | 1295 | |
3daaed1a | 1296 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) { |
62e76326 | 1297 | /* TODO: Could upstream read errors (result.flags.error) be |
1298 | * lost, and result in undersize requests being considered | |
1299 | * complete. Should we tcp reset such connections ? | |
1300 | */ | |
3daaed1a | 1301 | debugs(88, 5, "clientReplyStatus: aborted storeEntry"); |
62e76326 | 1302 | return STREAM_FAILED; |
3daaed1a | 1303 | } |
62e76326 | 1304 | |
0655fa4d | 1305 | if ((done = checkTransferDone()) != 0 || flags.complete) { |
1bfe9ade | 1306 | debugs(88, 5, "clientReplyStatus: transfer is DONE: " << done << flags.complete); |
62e76326 | 1307 | /* Ok we're finished, but how? */ |
1308 | ||
7224ca5a AR |
1309 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_BAD_LENGTH)) { |
1310 | debugs(88, 5, "clientReplyStatus: truncated response body"); | |
1311 | return STREAM_UNPLANNED_COMPLETE; | |
1312 | } | |
1313 | ||
62e76326 | 1314 | if (!done) { |
bf8fe701 | 1315 | debugs(88, 5, "clientReplyStatus: closing, !done, but read 0 bytes"); |
62e76326 | 1316 | return STREAM_FAILED; |
1317 | } | |
1318 | ||
14231db9 AR |
1319 | const int64_t expectedBodySize = |
1320 | http->storeEntry()->getReply()->bodySize(http->request->method); | |
4ad60609 | 1321 | if (expectedBodySize >= 0 && !http->gotEnough()) { |
bf8fe701 | 1322 | debugs(88, 5, "clientReplyStatus: client didn't get all it expected"); |
62e76326 | 1323 | return STREAM_UNPLANNED_COMPLETE; |
1324 | } | |
1325 | ||
ca6d5de2 AR |
1326 | debugs(88, 5, "clientReplyStatus: stream complete; keepalive=" << |
1327 | http->request->flags.proxyKeepalive); | |
1328 | return STREAM_COMPLETE; | |
edce4d98 | 1329 | } |
62e76326 | 1330 | |
16611143 | 1331 | // XXX: Should this be checked earlier? We could return above w/o checking. |
1332 | if (reply->receivedBodyTooLarge(*http->request, http->out.offset - 4096)) { | |
b51aec66 | 1333 | /* 4096 is a margin for the HTTP headers included in out.offset */ |
bf8fe701 | 1334 | debugs(88, 5, "clientReplyStatus: client reply body is too large"); |
62e76326 | 1335 | return STREAM_FAILED; |
0e3be1ea | 1336 | } |
62e76326 | 1337 | |
edce4d98 | 1338 | return STREAM_NONE; |
1339 | } | |
1340 | ||
62e76326 | 1341 | /* Responses with no body will not have a content-type header, |
edce4d98 | 1342 | * which breaks the rep_mime_type acl, which |
1343 | * coincidentally, is the most common acl for reply access lists. | |
1344 | * A better long term fix for this is to allow acl matchs on the various | |
26ac0430 AJ |
1345 | * status codes, and then supply a default ruleset that puts these |
1346 | * codes before any user defines access entries. That way the user | |
edce4d98 | 1347 | * can choose to block these responses where appropriate, but won't get |
1348 | * mysterious breakages. | |
1349 | */ | |
0655fa4d | 1350 | bool |
955394ce | 1351 | clientReplyContext::alwaysAllowResponse(Http::StatusCode sline) const |
edce4d98 | 1352 | { |
4ef4b952 | 1353 | bool result; |
1354 | ||
edce4d98 | 1355 | switch (sline) { |
62e76326 | 1356 | |
955394ce | 1357 | case Http::scContinue: |
62e76326 | 1358 | |
955394ce | 1359 | case Http::scSwitchingProtocols: |
62e76326 | 1360 | |
955394ce | 1361 | case Http::scProcessing: |
62e76326 | 1362 | |
955394ce | 1363 | case Http::scNoContent: |
62e76326 | 1364 | |
955394ce | 1365 | case Http::scNotModified: |
4ef4b952 | 1366 | result = true; |
62e76326 | 1367 | break; |
1368 | ||
edce4d98 | 1369 | default: |
4ef4b952 | 1370 | result = false; |
edce4d98 | 1371 | } |
4ef4b952 | 1372 | |
1373 | return result; | |
edce4d98 | 1374 | } |
1375 | ||
a5c8d64d AJ |
1376 | /** |
1377 | * Generate the reply headers sent to client. | |
1378 | * | |
1379 | * Filters out unwanted entries and hop-by-hop from original reply header | |
1380 | * then adds extra entries if we have more info than origin server | |
1381 | * then adds Squid specific entries | |
edce4d98 | 1382 | */ |
0655fa4d | 1383 | void |
1384 | clientReplyContext::buildReplyHeader() | |
edce4d98 | 1385 | { |
7dc5f514 | 1386 | HttpHeader *hdr = &reply->header; |
91369933 | 1387 | const bool is_hit = http->logType.isTcpHit(); |
190154cf | 1388 | HttpRequest *request = http->request; |
edce4d98 | 1389 | #if DONT_FILTER_THESE |
1390 | /* but you might want to if you run Squid as an HTTP accelerator */ | |
a9925b40 | 1391 | /* hdr->delById(HDR_ACCEPT_RANGES); */ |
1392 | hdr->delById(HDR_ETAG); | |
edce4d98 | 1393 | #endif |
62e76326 | 1394 | |
096c9df3 | 1395 | if (is_hit || collapsedRevalidation == crSlave) |
789217a2 | 1396 | hdr->delById(Http::HdrType::SET_COOKIE); |
f89d4012 | 1397 | // TODO: RFC 2965 : Must honour Cache-Control: no-cache="set-cookie2" and remove header. |
62e76326 | 1398 | |
23c6d7e7 | 1399 | // if there is not configured a peer proxy with login=PASS or login=PASSTHRU option enabled |
dcf3665b | 1400 | // remove the Proxy-Authenticate header |
940307b9 | 1401 | if ( !request->peer_login || (strcmp(request->peer_login,"PASS") != 0 && strcmp(request->peer_login,"PASSTHRU") != 0)) { |
1402 | #if USE_ADAPTATION | |
1403 | // but allow adaptation services to authenticate clients | |
1404 | // via request satisfaction | |
1405 | if (!http->requestSatisfactionMode()) | |
1406 | #endif | |
1407 | reply->header.delById(Http::HdrType::PROXY_AUTHENTICATE); | |
1408 | } | |
dcf3665b | 1409 | |
2cdeea82 | 1410 | reply->header.removeHopByHopEntries(); |
62e76326 | 1411 | |
1412 | // if (request->range) | |
7dc5f514 | 1413 | // clientBuildRangeHeader(http, reply); |
a5c8d64d | 1414 | |
edce4d98 | 1415 | /* |
1416 | * Add a estimated Age header on cache hits. | |
1417 | */ | |
1418 | if (is_hit) { | |
62e76326 | 1419 | /* |
1420 | * Remove any existing Age header sent by upstream caches | |
1421 | * (note that the existing header is passed along unmodified | |
1422 | * on cache misses) | |
1423 | */ | |
789217a2 | 1424 | hdr->delById(Http::HdrType::AGE); |
62e76326 | 1425 | /* |
1426 | * This adds the calculated object age. Note that the details of the | |
1427 | * age calculation is performed by adjusting the timestamp in | |
3900307b | 1428 | * StoreEntry::timestampsSet(), not here. |
62e76326 | 1429 | */ |
bbe58ab5 | 1430 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_SPECIAL)) { |
789217a2 | 1431 | hdr->delById(Http::HdrType::DATE); |
81ab22b6 | 1432 | hdr->putTime(Http::HdrType::DATE, squid_curtime); |
cda7024f | 1433 | } else if (http->getConn() && http->getConn()->port->actAsOrigin) { |
90fa5816 | 1434 | // Swap the Date: header to current time if we are simulating an origin |
789217a2 | 1435 | HttpHeaderEntry *h = hdr->findEntry(Http::HdrType::DATE); |
fd49b08b A |
1436 | if (h) |
1437 | hdr->putExt("X-Origin-Date", h->value.termedBuf()); | |
789217a2 | 1438 | hdr->delById(Http::HdrType::DATE); |
81ab22b6 | 1439 | hdr->putTime(Http::HdrType::DATE, squid_curtime); |
789217a2 | 1440 | h = hdr->findEntry(Http::HdrType::EXPIRES); |
fd49b08b A |
1441 | if (h && http->storeEntry()->expires >= 0) { |
1442 | hdr->putExt("X-Origin-Expires", h->value.termedBuf()); | |
789217a2 | 1443 | hdr->delById(Http::HdrType::EXPIRES); |
81ab22b6 | 1444 | hdr->putTime(Http::HdrType::EXPIRES, squid_curtime + http->storeEntry()->expires - http->storeEntry()->timestamp); |
fd49b08b | 1445 | } |
90fa5816 AJ |
1446 | if (http->storeEntry()->timestamp <= squid_curtime) { |
1447 | // put X-Cache-Age: instead of Age: | |
fd49b08b | 1448 | char age[64]; |
fe3f0034 | 1449 | snprintf(age, sizeof(age), "%" PRId64, static_cast<int64_t>(squid_curtime - http->storeEntry()->timestamp)); |
fd49b08b A |
1450 | hdr->putExt("X-Cache-Age", age); |
1451 | } | |
a81e7089 | 1452 | } else if (http->storeEntry()->timestamp <= squid_curtime) { |
789217a2 | 1453 | hdr->putInt(Http::HdrType::AGE, |
a9925b40 | 1454 | squid_curtime - http->storeEntry()->timestamp); |
62e76326 | 1455 | /* Signal old objects. NB: rfc 2616 is not clear, |
1456 | * by implication, on whether we should do this to all | |
1457 | * responses, or only cache hits. | |
1458 | * 14.46 states it ONLY applys for heuristically caclulated | |
1459 | * freshness values, 13.2.4 doesn't specify the same limitation. | |
1460 | * We interpret RFC 2616 under the combination. | |
1461 | */ | |
1462 | /* TODO: if maxage or s-maxage is present, don't do this */ | |
1463 | ||
86a2f789 | 1464 | if (squid_curtime - http->storeEntry()->timestamp >= 86400) { |
8bcf08e0 FC |
1465 | char tbuf[512]; |
1466 | snprintf (tbuf, sizeof(tbuf), "%s %s %s", | |
62e76326 | 1467 | "113", ThisCache, |
1468 | "This cache hit is still fresh and more than 1 day old"); | |
789217a2 | 1469 | hdr->putStr(Http::HdrType::WARNING, tbuf); |
62e76326 | 1470 | } |
1471 | } | |
a5c8d64d | 1472 | } |
528b2c61 | 1473 | |
a5c8d64d AJ |
1474 | /* RFC 2616: Section 14.18 |
1475 | * | |
1476 | * Add a Date: header if missing. | |
1477 | * We have access to a clock therefore are required to amend any shortcoming in servers. | |
1478 | * | |
1479 | * NP: done after Age: to prevent ENTRY_SPECIAL double-handling this header. | |
1480 | */ | |
789217a2 | 1481 | if ( !hdr->has(Http::HdrType::DATE) ) { |
f0dedeb5 | 1482 | if (!http->storeEntry()) |
81ab22b6 | 1483 | hdr->putTime(Http::HdrType::DATE, squid_curtime); |
f0dedeb5 | 1484 | else if (http->storeEntry()->timestamp > 0) |
81ab22b6 | 1485 | hdr->putTime(Http::HdrType::DATE, http->storeEntry()->timestamp); |
f0dedeb5 | 1486 | else { |
d9d98242 | 1487 | debugs(88,DBG_IMPORTANT,"BUG 3279: HTTP reply without Date:"); |
e78ae89a AJ |
1488 | /* dump something useful about the problem */ |
1489 | http->storeEntry()->dump(DBG_IMPORTANT); | |
f0dedeb5 | 1490 | } |
edce4d98 | 1491 | } |
62e76326 | 1492 | |
bcfba8bd | 1493 | // add Warnings required by RFC 2616 if serving a stale hit |
91369933 | 1494 | if (http->request->flags.staleIfHit && http->logType.isTcpHit()) { |
bcfba8bd | 1495 | hdr->putWarning(110, "Response is stale"); |
450fe1cb | 1496 | if (http->request->flags.needValidation) |
bcfba8bd AR |
1497 | hdr->putWarning(111, "Revalidation failed"); |
1498 | } | |
1499 | ||
0bd9aa82 | 1500 | /* Filter unproxyable authentication types */ |
91369933 | 1501 | if (http->logType.oldType != LOG_TCP_DENIED && |
789217a2 | 1502 | hdr->has(Http::HdrType::WWW_AUTHENTICATE)) { |
62e76326 | 1503 | HttpHeaderPos pos = HttpHeaderInitPos; |
1504 | HttpHeaderEntry *e; | |
1505 | ||
26ac0430 | 1506 | int connection_auth_blocked = 0; |
a9925b40 | 1507 | while ((e = hdr->getEntry(&pos))) { |
789217a2 | 1508 | if (e->id == Http::HdrType::WWW_AUTHENTICATE) { |
5b4117d8 | 1509 | const char *value = e->value.rawBuf(); |
62e76326 | 1510 | |
1511 | if ((strncasecmp(value, "NTLM", 4) == 0 && | |
1512 | (value[4] == '\0' || value[4] == ' ')) | |
1513 | || | |
1514 | (strncasecmp(value, "Negotiate", 9) == 0 && | |
d67acb4e | 1515 | (value[9] == '\0' || value[9] == ' ')) |
26ac0430 AJ |
1516 | || |
1517 | (strncasecmp(value, "Kerberos", 8) == 0 && | |
1518 | (value[8] == '\0' || value[8] == ' '))) { | |
450fe1cb | 1519 | if (request->flags.connectionAuthDisabled) { |
26ac0430 | 1520 | hdr->delAt(pos, connection_auth_blocked); |
d67acb4e AJ |
1521 | continue; |
1522 | } | |
e857372a | 1523 | request->flags.mustKeepalive = true; |
45e5102d | 1524 | if (!request->flags.accelerated && !request->flags.intercepted) { |
789217a2 | 1525 | httpHeaderPutStrf(hdr, Http::HdrType::PROXY_SUPPORT, "Session-Based-Authentication"); |
26ac0430 | 1526 | /* |
f7a2e5a5 | 1527 | We send "Connection: Proxy-Support" header to mark |
26ac0430 AJ |
1528 | Proxy-Support as a hop-by-hop header for intermediaries that do not |
1529 | understand the semantics of this header. The RFC should have included | |
1530 | this recommendation. | |
1531 | */ | |
789217a2 | 1532 | httpHeaderPutStrf(hdr, Http::HdrType::CONNECTION, "Proxy-support"); |
d67acb4e AJ |
1533 | } |
1534 | break; | |
26ac0430 | 1535 | } |
62e76326 | 1536 | } |
1537 | } | |
d67acb4e AJ |
1538 | |
1539 | if (connection_auth_blocked) | |
ba9fb01d | 1540 | hdr->refreshMask(); |
0bd9aa82 | 1541 | } |
62e76326 | 1542 | |
2f1431ea | 1543 | #if USE_AUTH |
edce4d98 | 1544 | /* Handle authentication headers */ |
91369933 | 1545 | if (http->logType.oldType == LOG_TCP_DENIED && |
9b769c67 AJ |
1546 | ( reply->sline.status() == Http::scProxyAuthenticationRequired || |
1547 | reply->sline.status() == Http::scUnauthorized) | |
26ac0430 AJ |
1548 | ) { |
1549 | /* Add authentication header */ | |
1550 | /*! \todo alter errorstate to be accel on|off aware. The 0 on the next line | |
1551 | * depends on authenticate behaviour: all schemes to date send no extra | |
1552 | * data on 407/401 responses, and do not check the accel state on 401/407 | |
1553 | * responses | |
1554 | */ | |
923a8d89 | 1555 | Auth::UserRequest::AddReplyAuthHeader(reply, request->auth_user_request, request, 0, 1); |
a33a428a | 1556 | } else if (request->auth_user_request != NULL) |
923a8d89 | 1557 | Auth::UserRequest::AddReplyAuthHeader(reply, request->auth_user_request, request, http->flags.accel, 0); |
2f1431ea | 1558 | #endif |
62e76326 | 1559 | |
edce4d98 | 1560 | /* Append X-Cache */ |
789217a2 | 1561 | httpHeaderPutStrf(hdr, Http::HdrType::X_CACHE, "%s from %s", |
62e76326 | 1562 | is_hit ? "HIT" : "MISS", getMyHostname()); |
1563 | ||
edce4d98 | 1564 | #if USE_CACHE_DIGESTS |
1565 | /* Append X-Cache-Lookup: -- temporary hack, to be removed @?@ @?@ */ | |
789217a2 | 1566 | httpHeaderPutStrf(hdr, Http::HdrType::X_CACHE_LOOKUP, "%s from %s:%d", |
0655fa4d | 1567 | lookup_type ? lookup_type : "NONE", |
62e76326 | 1568 | getMyHostname(), getMyPort()); |
1569 | ||
edce4d98 | 1570 | #endif |
62e76326 | 1571 | |
45e5102d | 1572 | const bool maySendChunkedReply = !request->multipartRangeRequest() && |
f7701e72 | 1573 | reply->sline.protocol == AnyP::PROTO_HTTP && // response is HTTP |
2592bc70 | 1574 | (request->http_ver >= Http::ProtocolVersion(1,1)); |
4ad60609 | 1575 | |
f529bb20 | 1576 | /* Check whether we should send keep-alive */ |
9b769c67 | 1577 | if (!Config.onoff.error_pconns && reply->sline.status() >= 400 && !request->flags.mustKeepalive) { |
bf8fe701 | 1578 | debugs(33, 3, "clientBuildReplyHeader: Error, don't keep-alive"); |
e857372a | 1579 | request->flags.proxyKeepalive = false; |
450fe1cb | 1580 | } else if (!Config.onoff.client_pconns && !request->flags.mustKeepalive) { |
17b57873 | 1581 | debugs(33, 2, "clientBuildReplyHeader: Connection Keep-Alive not requested by admin or client"); |
e857372a | 1582 | request->flags.proxyKeepalive = false; |
450fe1cb | 1583 | } else if (request->flags.proxyKeepalive && shutting_down) { |
f529bb20 | 1584 | debugs(88, 3, "clientBuildReplyHeader: Shutting down, don't keep-alive."); |
e857372a | 1585 | request->flags.proxyKeepalive = false; |
450fe1cb | 1586 | } else if (request->flags.connectionAuth && !reply->keep_alive) { |
26ac0430 | 1587 | debugs(33, 2, "clientBuildReplyHeader: Connection oriented auth but server side non-persistent"); |
e857372a | 1588 | request->flags.proxyKeepalive = false; |
4ad60609 | 1589 | } else if (reply->bodySize(request->method) < 0 && !maySendChunkedReply) { |
17b57873 | 1590 | debugs(88, 3, "clientBuildReplyHeader: can't keep-alive, unknown body size" ); |
e857372a | 1591 | request->flags.proxyKeepalive = false; |
450fe1cb | 1592 | } else if (fdUsageHigh()&& !request->flags.mustKeepalive) { |
17b57873 | 1593 | debugs(88, 3, "clientBuildReplyHeader: Not many unused FDs, can't keep-alive"); |
e857372a | 1594 | request->flags.proxyKeepalive = false; |
450fe1cb | 1595 | } else if (request->flags.sslBumped && !reply->persistent()) { |
49f1c7f7 AR |
1596 | // We do not really have to close, but we pretend we are a tunnel. |
1597 | debugs(88, 3, "clientBuildReplyHeader: bumped reply forces close"); | |
e857372a | 1598 | request->flags.proxyKeepalive = false; |
693cb033 CT |
1599 | } else if (request->pinnedConnection() && !reply->persistent()) { |
1600 | // The peer wants to close the pinned connection | |
1601 | debugs(88, 3, "pinned reply forces close"); | |
e857372a | 1602 | request->flags.proxyKeepalive = false; |
c5c06f02 CT |
1603 | } else if (http->getConn()) { |
1604 | ConnStateData * conn = http->getConn(); | |
cda7024f | 1605 | if (!Comm::IsConnOpen(conn->port->listenConn)) { |
c5c06f02 CT |
1606 | // The listening port closed because of a reconfigure |
1607 | debugs(88, 3, "listening port closed"); | |
1608 | request->flags.proxyKeepalive = false; | |
c5c06f02 | 1609 | } |
17b57873 | 1610 | } |
d67acb4e | 1611 | |
4ad60609 | 1612 | // Decide if we send chunked reply |
95172eea | 1613 | if (maySendChunkedReply && reply->bodySize(request->method) < 0) { |
4ad60609 | 1614 | debugs(88, 3, "clientBuildReplyHeader: chunked reply"); |
e857372a | 1615 | request->flags.chunkedReply = true; |
789217a2 | 1616 | hdr->putStr(Http::HdrType::TRANSFER_ENCODING, "chunked"); |
4ad60609 | 1617 | } |
f529bb20 | 1618 | |
90be6ff5 EB |
1619 | hdr->addVia(reply->sline.version); |
1620 | ||
95e78500 | 1621 | /* Signal keep-alive or close explicitly */ |
789217a2 | 1622 | hdr->putStr(Http::HdrType::CONNECTION, request->flags.proxyKeepalive ? "keep-alive" : "close"); |
62e76326 | 1623 | |
edce4d98 | 1624 | #if ADD_X_REQUEST_URI |
1625 | /* | |
1626 | * Knowing the URI of the request is useful when debugging persistent | |
1627 | * connections in a client; we cannot guarantee the order of http headers, | |
1628 | * but X-Request-URI is likely to be the very last header to ease use from a | |
1629 | * debugger [hdr->entries.count-1]. | |
1630 | */ | |
789217a2 | 1631 | hdr->putStr(Http::HdrType::X_REQUEST_URI, |
a9925b40 | 1632 | http->memOjbect()->url ? http->memObject()->url : http->uri); |
62e76326 | 1633 | |
edce4d98 | 1634 | #endif |
62e76326 | 1635 | |
45cca89d | 1636 | /* Surrogate-Control requires Surrogate-Capability from upstream to pass on */ |
789217a2 FC |
1637 | if ( hdr->has(Http::HdrType::SURROGATE_CONTROL) ) { |
1638 | if (!request->header.has(Http::HdrType::SURROGATE_CAPABILITY)) { | |
1639 | hdr->delById(Http::HdrType::SURROGATE_CONTROL); | |
45cca89d AJ |
1640 | } |
1641 | /* TODO: else case: drop any controls intended specifically for our surrogate ID */ | |
1642 | } | |
1643 | ||
cde8f31b | 1644 | httpHdrMangleList(hdr, request, http->al, ROR_REPLY); |
edce4d98 | 1645 | } |
1646 | ||
0655fa4d | 1647 | void |
b297bcd0 | 1648 | clientReplyContext::cloneReply() |
edce4d98 | 1649 | { |
7dc5f514 | 1650 | assert(reply == NULL); |
0655fa4d | 1651 | |
b248c2a3 AJ |
1652 | reply = http->storeEntry()->getReply()->clone(); |
1653 | HTTPMSGLOCK(reply); | |
7dc5f514 | 1654 | |
0c3d3f65 | 1655 | if (reply->sline.protocol == AnyP::PROTO_HTTP) { |
2592bc70 AJ |
1656 | /* RFC 2616 requires us to advertise our version (but only on real HTTP traffic) */ |
1657 | reply->sline.version = Http::ProtocolVersion(); | |
e77d7ef0 | 1658 | } |
0655fa4d | 1659 | |
1660 | /* do header conversions */ | |
1661 | buildReplyHeader(); | |
edce4d98 | 1662 | } |
1663 | ||
7681a3b9 AR |
1664 | /// Safely disposes of an entry pointing to a cache hit that we do not want. |
1665 | /// We cannot just ignore the entry because it may be locking or otherwise | |
1666 | /// holding an associated cache resource of some sort. | |
1667 | void | |
1668 | clientReplyContext::forgetHit() | |
1669 | { | |
1670 | StoreEntry *e = http->storeEntry(); | |
1671 | assert(e); // or we are not dealing with a hit | |
1672 | // We probably have not locked the entry earlier, unfortunately. We lock it | |
1673 | // now so that we can unlock two lines later (and trigger cleanup). | |
1674 | // Ideally, ClientHttpRequest::storeEntry() should lock/unlock, but it is | |
1675 | // used so inconsistently that simply adding locking there leads to bugs. | |
1bfe9ade | 1676 | e->lock("clientReplyContext::forgetHit"); |
7681a3b9 | 1677 | http->storeEntry(NULL); |
1bfe9ade | 1678 | e->unlock("clientReplyContext::forgetHit"); // may delete e |
7681a3b9 AR |
1679 | } |
1680 | ||
e6ccf245 | 1681 | void |
1682 | clientReplyContext::identifyStoreObject() | |
edce4d98 | 1683 | { |
190154cf | 1684 | HttpRequest *r = http->request; |
62e76326 | 1685 | |
f8acd68f GD |
1686 | // client sent CC:no-cache or some other condition has been |
1687 | // encountered which prevents delivering a public/cached object. | |
1688 | if (!r->flags.noCache || r->flags.internal) { | |
62e76326 | 1689 | lookingforstore = 5; |
1690 | StoreEntry::getPublicByRequest (this, r); | |
559da936 | 1691 | } else { |
62e76326 | 1692 | identifyFoundObject (NullStoreEntry::getInstance()); |
559da936 | 1693 | } |
e6ccf245 | 1694 | } |
1695 | ||
7d5f62a4 AJ |
1696 | /** |
1697 | * Check state of the current StoreEntry object. | |
1698 | * to see if we can determine the final status of the request. | |
1699 | */ | |
e6ccf245 | 1700 | void |
1701 | clientReplyContext::identifyFoundObject(StoreEntry *newEntry) | |
1702 | { | |
1703 | StoreEntry *e = newEntry; | |
190154cf | 1704 | HttpRequest *r = http->request; |
62e76326 | 1705 | |
d85b8894 | 1706 | /** \li If the entry received isNull() then we ignore it. */ |
e6ccf245 | 1707 | if (e->isNull()) { |
86a2f789 | 1708 | http->storeEntry(NULL); |
e6ccf245 | 1709 | } else { |
86a2f789 | 1710 | http->storeEntry(e); |
e6ccf245 | 1711 | } |
62e76326 | 1712 | |
86a2f789 | 1713 | e = http->storeEntry(); |
a12a049a | 1714 | |
7d5f62a4 | 1715 | /* Release IP-cache entries on reload */ |
d85b8894 | 1716 | /** \li If the request has no-cache flag set or some no_cache HACK in operation we |
7d5f62a4 AJ |
1717 | * 'invalidate' the cached IP entries for this request ??? |
1718 | */ | |
17852883 | 1719 | if (r->flags.noCache || r->flags.noCacheHack()) |
5c51bffb | 1720 | ipcacheInvalidateNegative(r->url.host()); |
45e5102d | 1721 | |
edce4d98 | 1722 | #if USE_CACHE_DIGESTS |
86a2f789 | 1723 | lookup_type = http->storeEntry() ? "HIT" : "MISS"; |
edce4d98 | 1724 | #endif |
62e76326 | 1725 | |
86a2f789 | 1726 | if (NULL == http->storeEntry()) { |
d85b8894 | 1727 | /** \li If no StoreEntry object is current assume this object isn't in the cache set MISS*/ |
e4d13993 | 1728 | debugs(85, 3, "StoreEntry is NULL - MISS"); |
62e76326 | 1729 | http->logType = LOG_TCP_MISS; |
1730 | doGetMoreData(); | |
1731 | return; | |
edce4d98 | 1732 | } |
62e76326 | 1733 | |
edce4d98 | 1734 | if (Config.onoff.offline) { |
d85b8894 | 1735 | /** \li If we are running in offline mode set to HIT */ |
e4d13993 | 1736 | debugs(85, 3, "offline HIT " << *e); |
62e76326 | 1737 | http->logType = LOG_TCP_HIT; |
1738 | doGetMoreData(); | |
1739 | return; | |
edce4d98 | 1740 | } |
62e76326 | 1741 | |
edce4d98 | 1742 | if (http->redirect.status) { |
d85b8894 | 1743 | /** \li If redirection status is True force this to be a MISS */ |
539283df | 1744 | debugs(85, 3, "REDIRECT status forced StoreEntry to NULL (no body on 3XX responses) " << *e); |
7681a3b9 | 1745 | forgetHit(); |
16cd3193 | 1746 | http->logType = LOG_TCP_REDIRECT; |
62e76326 | 1747 | doGetMoreData(); |
1748 | return; | |
edce4d98 | 1749 | } |
62e76326 | 1750 | |
3900307b | 1751 | if (!e->validToSend()) { |
e4d13993 | 1752 | debugs(85, 3, "!storeEntryValidToSend MISS " << *e); |
7681a3b9 | 1753 | forgetHit(); |
62e76326 | 1754 | http->logType = LOG_TCP_MISS; |
1755 | doGetMoreData(); | |
1756 | return; | |
edce4d98 | 1757 | } |
62e76326 | 1758 | |
edce4d98 | 1759 | if (EBIT_TEST(e->flags, ENTRY_SPECIAL)) { |
d85b8894 | 1760 | /* \li Special entries are always hits, no matter what the client says */ |
e4d13993 | 1761 | debugs(85, 3, "ENTRY_SPECIAL HIT " << *e); |
62e76326 | 1762 | http->logType = LOG_TCP_HIT; |
1763 | doGetMoreData(); | |
1764 | return; | |
edce4d98 | 1765 | } |
62e76326 | 1766 | |
450fe1cb | 1767 | if (r->flags.noCache) { |
e4d13993 | 1768 | debugs(85, 3, "no-cache REFRESH MISS " << *e); |
7681a3b9 | 1769 | forgetHit(); |
62e76326 | 1770 | http->logType = LOG_TCP_CLIENT_REFRESH_MISS; |
1771 | doGetMoreData(); | |
1772 | return; | |
edce4d98 | 1773 | } |
62e76326 | 1774 | |
e4d13993 | 1775 | debugs(85, 3, "default HIT " << *e); |
e6ccf245 | 1776 | http->logType = LOG_TCP_HIT; |
1777 | doGetMoreData(); | |
edce4d98 | 1778 | } |
1779 | ||
d85b8894 AJ |
1780 | /** |
1781 | * Request more data from the store for the client Stream | |
edce4d98 | 1782 | * This is *the* entry point to this module. |
1783 | * | |
1784 | * Preconditions: | |
d85b8894 AJ |
1785 | * - This is the head of the list. |
1786 | * - There is at least one more node. | |
1787 | * - Data context is not null | |
edce4d98 | 1788 | */ |
1789 | void | |
59a1efb2 | 1790 | clientGetMoreData(clientStreamNode * aNode, ClientHttpRequest * http) |
edce4d98 | 1791 | { |
edce4d98 | 1792 | /* Test preconditions */ |
e6ccf245 | 1793 | assert(aNode != NULL); |
1794 | assert(cbdataReferenceValid(aNode)); | |
e6ccf245 | 1795 | assert(aNode->node.prev == NULL); |
1796 | assert(aNode->node.next != NULL); | |
0655fa4d | 1797 | clientReplyContext *context = dynamic_cast<clientReplyContext *>(aNode->data.getRaw()); |
1798 | assert (context); | |
edce4d98 | 1799 | assert(context->http == http); |
1800 | ||
0655fa4d | 1801 | clientStreamNode *next = ( clientStreamNode *)aNode->node.next->data; |
62e76326 | 1802 | |
edce4d98 | 1803 | if (!context->ourNode) |
62e76326 | 1804 | context->ourNode = aNode; |
1805 | ||
e6ccf245 | 1806 | /* no cbdatareference, this is only used once, and safely */ |
edce4d98 | 1807 | if (context->flags.storelogiccomplete) { |
62e76326 | 1808 | StoreIOBuffer tempBuffer; |
1809 | tempBuffer.offset = next->readBuffer.offset + context->headers_sz; | |
1810 | tempBuffer.length = next->readBuffer.length; | |
1811 | tempBuffer.data = next->readBuffer.data; | |
1812 | ||
86a2f789 | 1813 | storeClientCopy(context->sc, http->storeEntry(), |
0655fa4d | 1814 | tempBuffer, clientReplyContext::SendMoreData, context); |
62e76326 | 1815 | return; |
edce4d98 | 1816 | } |
62e76326 | 1817 | |
c2a7cefd | 1818 | if (context->http->request->method == Http::METHOD_PURGE) { |
62e76326 | 1819 | context->purgeRequest(); |
1820 | return; | |
edce4d98 | 1821 | } |
62e76326 | 1822 | |
e18b8316 | 1823 | // OPTIONS with Max-Forwards:0 handled in clientProcessRequest() |
fc90edc3 | 1824 | |
c2a7cefd | 1825 | if (context->http->request->method == Http::METHOD_TRACE) { |
789217a2 | 1826 | if (context->http->request->header.getInt64(Http::HdrType::MAX_FORWARDS) == 0) { |
0655fa4d | 1827 | context->traceReply(aNode); |
62e76326 | 1828 | return; |
1829 | } | |
1830 | ||
1831 | /* continue forwarding, not finished yet. */ | |
1832 | http->logType = LOG_TCP_MISS; | |
1833 | ||
1834 | context->doGetMoreData(); | |
edce4d98 | 1835 | } else |
62e76326 | 1836 | context->identifyStoreObject(); |
e6ccf245 | 1837 | } |
1838 | ||
1839 | void | |
1840 | clientReplyContext::doGetMoreData() | |
1841 | { | |
edce4d98 | 1842 | /* We still have to do store logic processing - vary, cache hit etc */ |
86a2f789 | 1843 | if (http->storeEntry() != NULL) { |
62e76326 | 1844 | /* someone found the object in the cache for us */ |
8bcf08e0 | 1845 | StoreIOBuffer localTempBuffer; |
34266cde | 1846 | |
1bfe9ade | 1847 | http->storeEntry()->lock("clientReplyContext::doGetMoreData"); |
62e76326 | 1848 | |
76d61119 | 1849 | http->storeEntry()->ensureMemObject(storeId(), http->log_uri, http->request->method); |
62e76326 | 1850 | |
86a2f789 | 1851 | sc = storeClientListAdd(http->storeEntry(), this); |
9a0a18de | 1852 | #if USE_DELAY_POOLS |
62e76326 | 1853 | sc->setDelayId(DelayId::DelayClient(http)); |
edce4d98 | 1854 | #endif |
62e76326 | 1855 | |
91369933 | 1856 | assert(http->logType.oldType == LOG_TCP_HIT); |
62e76326 | 1857 | reqofs = 0; |
1858 | /* guarantee nothing has been sent yet! */ | |
1859 | assert(http->out.size == 0); | |
1860 | assert(http->out.offset == 0); | |
425de4c8 | 1861 | |
6b4edefb CT |
1862 | if (ConnStateData *conn = http->getConn()) { |
1863 | if (Ip::Qos::TheConfig.isHitTosActive()) { | |
1864 | Ip::Qos::doTosLocalHit(conn->clientConnection); | |
1865 | } | |
425de4c8 | 1866 | |
6b4edefb CT |
1867 | if (Ip::Qos::TheConfig.isHitNfmarkActive()) { |
1868 | Ip::Qos::doNfmarkLocalHit(conn->clientConnection); | |
1869 | } | |
b86ab75b | 1870 | } |
425de4c8 | 1871 | |
8bcf08e0 FC |
1872 | localTempBuffer.offset = reqofs; |
1873 | localTempBuffer.length = getNextNode()->readBuffer.length; | |
1874 | localTempBuffer.data = getNextNode()->readBuffer.data; | |
1875 | storeClientCopy(sc, http->storeEntry(), localTempBuffer, CacheHit, this); | |
edce4d98 | 1876 | } else { |
62e76326 | 1877 | /* MISS CASE, http->logType is already set! */ |
0655fa4d | 1878 | processMiss(); |
edce4d98 | 1879 | } |
1880 | } | |
1881 | ||
d85b8894 | 1882 | /** The next node has removed itself from the stream. */ |
edce4d98 | 1883 | void |
59a1efb2 | 1884 | clientReplyDetach(clientStreamNode * node, ClientHttpRequest * http) |
edce4d98 | 1885 | { |
d85b8894 | 1886 | /** detach from the stream */ |
edce4d98 | 1887 | clientStreamDetach(node, http); |
1888 | } | |
1889 | ||
d85b8894 AJ |
1890 | /** |
1891 | * Accepts chunk of a http message in buf, parses prefix, filters headers and | |
edce4d98 | 1892 | * such, writes processed message to the message recipient |
1893 | */ | |
1894 | void | |
0655fa4d | 1895 | clientReplyContext::SendMoreData(void *data, StoreIOBuffer result) |
edce4d98 | 1896 | { |
e6ccf245 | 1897 | clientReplyContext *context = static_cast<clientReplyContext *>(data); |
528b2c61 | 1898 | context->sendMoreData (result); |
1899 | } | |
1900 | ||
1901 | void | |
1902 | clientReplyContext::makeThisHead() | |
1903 | { | |
1904 | /* At least, I think thats what this does */ | |
1905 | dlinkDelete(&http->active, &ClientActiveRequests); | |
1906 | dlinkAdd(http, &http->active, &ClientActiveRequests); | |
1907 | } | |
1908 | ||
1909 | bool | |
1910 | clientReplyContext::errorInStream(StoreIOBuffer const &result, size_t const &sizeToProcess)const | |
1911 | { | |
1912 | return /* aborted request */ | |
86a2f789 | 1913 | (http->storeEntry() && EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) || |
62e76326 | 1914 | /* Upstream read error */ (result.flags.error) || |
1915 | /* Upstream EOF */ (sizeToProcess == 0); | |
528b2c61 | 1916 | } |
1917 | ||
1918 | void | |
1919 | clientReplyContext::sendStreamError(StoreIOBuffer const &result) | |
1920 | { | |
d85b8894 | 1921 | /** call clientWriteComplete so the client socket gets closed |
af6a12ee | 1922 | * |
d85b8894 | 1923 | * We call into the stream, because we don't know that there is a |
528b2c61 | 1924 | * client socket! |
1925 | */ | |
26ac0430 | 1926 | debugs(88, 5, "clientReplyContext::sendStreamError: A stream error has occured, marking as complete and sending no data."); |
8bcf08e0 | 1927 | StoreIOBuffer localTempBuffer; |
528b2c61 | 1928 | flags.complete = 1; |
e857372a | 1929 | http->request->flags.streamError = true; |
8bcf08e0 | 1930 | localTempBuffer.flags.error = result.flags.error; |
528b2c61 | 1931 | clientStreamCallback((clientStreamNode*)http->client_stream.head->data, http, NULL, |
8bcf08e0 | 1932 | localTempBuffer); |
528b2c61 | 1933 | } |
1934 | ||
1935 | void | |
1936 | clientReplyContext::pushStreamData(StoreIOBuffer const &result, char *source) | |
1937 | { | |
8bcf08e0 | 1938 | StoreIOBuffer localTempBuffer; |
62e76326 | 1939 | |
528b2c61 | 1940 | if (result.length == 0) { |
bf8fe701 | 1941 | debugs(88, 5, "clientReplyContext::pushStreamData: marking request as complete due to 0 length store result"); |
62e76326 | 1942 | flags.complete = 1; |
528b2c61 | 1943 | } |
62e76326 | 1944 | |
43ae1d95 | 1945 | assert(result.offset - headers_sz == next()->readBuffer.offset); |
8bcf08e0 FC |
1946 | localTempBuffer.offset = result.offset - headers_sz; |
1947 | localTempBuffer.length = result.length; | |
62e76326 | 1948 | |
8bcf08e0 FC |
1949 | if (localTempBuffer.length) |
1950 | localTempBuffer.data = source; | |
62e76326 | 1951 | |
528b2c61 | 1952 | clientStreamCallback((clientStreamNode*)http->client_stream.head->data, http, NULL, |
8bcf08e0 | 1953 | localTempBuffer); |
528b2c61 | 1954 | } |
1955 | ||
1956 | clientStreamNode * | |
1957 | clientReplyContext::next() const | |
1958 | { | |
1959 | assert ( (clientStreamNode*)http->client_stream.head->next->data == getNextNode()); | |
1960 | return getNextNode(); | |
1961 | } | |
1962 | ||
b51aec66 | 1963 | void |
16611143 | 1964 | clientReplyContext::sendBodyTooLargeError() |
b51aec66 | 1965 | { |
b7ac5457 | 1966 | Ip::Address tmp_noaddr; |
4dd643d5 | 1967 | tmp_noaddr.setNoAddr(); // TODO: make a global const |
af0d9bca | 1968 | http->logType = LOG_TCP_DENIED_REPLY; |
955394ce | 1969 | ErrorState *err = clientBuildError(ERR_TOO_BIG, Http::scForbidden, NULL, |
73c36fd9 | 1970 | http->getConn() != NULL ? http->getConn()->clientConnection->remote : tmp_noaddr, |
26ac0430 | 1971 | http->request); |
16611143 | 1972 | removeClientStoreReference(&(sc), http); |
1973 | HTTPMSGUNLOCK(reply); | |
1974 | startError(err); | |
26ac0430 | 1975 | |
b51aec66 | 1976 | } |
1977 | ||
79c8035e AR |
1978 | /// send 412 (Precondition Failed) to client |
1979 | void | |
1980 | clientReplyContext::sendPreconditionFailedError() | |
1981 | { | |
1982 | http->logType = LOG_TCP_HIT; | |
6b4edefb CT |
1983 | Ip::Address tmp_noaddr; |
1984 | tmp_noaddr.setNoAddr(); | |
79c8035e | 1985 | ErrorState *const err = |
955394ce | 1986 | clientBuildError(ERR_PRECONDITION_FAILED, Http::scPreconditionFailed, |
6b4edefb | 1987 | NULL, http->getConn() ? http->getConn()->clientConnection->remote : tmp_noaddr, http->request); |
79c8035e AR |
1988 | removeClientStoreReference(&sc, http); |
1989 | HTTPMSGUNLOCK(reply); | |
1990 | startError(err); | |
1991 | } | |
1992 | ||
a2bd457d AJ |
1993 | /// send 304 (Not Modified) to client |
1994 | void | |
1995 | clientReplyContext::sendNotModified() | |
1996 | { | |
1997 | StoreEntry *e = http->storeEntry(); | |
1998 | const time_t timestamp = e->timestamp; | |
1999 | HttpReply *const temprep = e->getReply()->make304(); | |
787ea68c GD |
2000 | // log as TCP_INM_HIT if code 304 generated for |
2001 | // If-None-Match request | |
2002 | if (!http->request->flags.ims) | |
2003 | http->logType = LOG_TCP_INM_HIT; | |
2004 | else | |
2005 | http->logType = LOG_TCP_IMS_HIT; | |
a2bd457d | 2006 | removeClientStoreReference(&sc, http); |
f206b652 | 2007 | createStoreEntry(http->request->method, RequestFlags()); |
a2bd457d AJ |
2008 | e = http->storeEntry(); |
2009 | // Copy timestamp from the original entry so the 304 | |
2010 | // reply has a meaningful Age: header. | |
90fa5816 | 2011 | e->timestampsSet(); |
a2bd457d AJ |
2012 | e->timestamp = timestamp; |
2013 | e->replaceHttpReply(temprep); | |
2014 | e->complete(); | |
2015 | /* | |
2016 | * TODO: why put this in the store and then serialise it and | |
2017 | * then parse it again. Simply mark the request complete in | |
2018 | * our context and write the reply struct to the client side. | |
2019 | */ | |
2020 | triggerInitialStoreRead(); | |
2021 | } | |
2022 | ||
2023 | /// send 304 (Not Modified) or 412 (Precondition Failed) to client | |
2024 | /// depending on request method | |
2025 | void | |
2026 | clientReplyContext::sendNotModifiedOrPreconditionFailedError() | |
2027 | { | |
c2a7cefd AJ |
2028 | if (http->request->method == Http::METHOD_GET || |
2029 | http->request->method == Http::METHOD_HEAD) | |
a2bd457d AJ |
2030 | sendNotModified(); |
2031 | else | |
2032 | sendPreconditionFailedError(); | |
2033 | } | |
2034 | ||
4993f571 | 2035 | void |
2036 | clientReplyContext::processReplyAccess () | |
2037 | { | |
b50e327b | 2038 | /* NP: this should probably soft-fail to a zero-sized-reply error ?? */ |
7dc5f514 | 2039 | assert(reply); |
b50e327b AJ |
2040 | |
2041 | /** Don't block our own responses or HTTP status messages */ | |
91369933 AJ |
2042 | if (http->logType.oldType == LOG_TCP_DENIED || |
2043 | http->logType.oldType == LOG_TCP_DENIED_REPLY || | |
9b769c67 | 2044 | alwaysAllowResponse(reply->sline.status())) { |
acbf9428 | 2045 | headers_sz = reply->hdr_sz; |
2efeb0b7 | 2046 | processReplyAccessResult(ACCESS_ALLOWED); |
26ac0430 | 2047 | return; |
230a8cc6 | 2048 | } |
26ac0430 | 2049 | |
b50e327b | 2050 | /** Check for reply to big error */ |
16611143 | 2051 | if (reply->expectedBodyTooLarge(*http->request)) { |
2052 | sendBodyTooLargeError(); | |
62e76326 | 2053 | return; |
2054 | } | |
2055 | ||
7dc5f514 | 2056 | headers_sz = reply->hdr_sz; |
230a8cc6 | 2057 | |
b50e327b | 2058 | /** check for absent access controls (permit by default) */ |
230a8cc6 | 2059 | if (!Config.accessList.reply) { |
2efeb0b7 | 2060 | processReplyAccessResult(ACCESS_ALLOWED); |
26ac0430 | 2061 | return; |
230a8cc6 | 2062 | } |
2063 | ||
b50e327b | 2064 | /** Process http_reply_access lists */ |
127dce76 AR |
2065 | ACLFilledChecklist *replyChecklist = |
2066 | clientAclChecklistCreate(Config.accessList.reply, http); | |
b248c2a3 AJ |
2067 | replyChecklist->reply = reply; |
2068 | HTTPMSGLOCK(replyChecklist->reply); | |
0655fa4d | 2069 | replyChecklist->nonBlockingCheck(ProcessReplyAccessResult, this); |
4993f571 | 2070 | } |
2071 | ||
2072 | void | |
2efeb0b7 | 2073 | clientReplyContext::ProcessReplyAccessResult(allow_t rv, void *voidMe) |
4993f571 | 2074 | { |
2075 | clientReplyContext *me = static_cast<clientReplyContext *>(voidMe); | |
0655fa4d | 2076 | me->processReplyAccessResult(rv); |
4993f571 | 2077 | } |
2078 | ||
2079 | void | |
2efeb0b7 | 2080 | clientReplyContext::processReplyAccessResult(const allow_t &accessAllowed) |
4993f571 | 2081 | { |
7f06a3d8 AJ |
2082 | debugs(88, 2, "The reply for " << http->request->method |
2083 | << ' ' << http->uri << " is " << accessAllowed << ", because it matched " | |
2084 | << (AclMatchedName ? AclMatchedName : "NO ACL's")); | |
62e76326 | 2085 | |
06bf5384 | 2086 | if (!accessAllowed.allowed()) { |
62e76326 | 2087 | ErrorState *err; |
0185bd6f | 2088 | err_type page_id; |
9ce7856a | 2089 | page_id = aclGetDenyInfoPage(&Config.denyInfoList, AclMatchedName, 1); |
0185bd6f | 2090 | |
c466369c | 2091 | http->logType = LOG_TCP_DENIED_REPLY; |
2092 | ||
0185bd6f | 2093 | if (page_id == ERR_NONE) |
2094 | page_id = ERR_ACCESS_DENIED; | |
2095 | ||
b7ac5457 | 2096 | Ip::Address tmp_noaddr; |
4dd643d5 | 2097 | tmp_noaddr.setNoAddr(); |
955394ce | 2098 | err = clientBuildError(page_id, Http::scForbidden, NULL, |
73c36fd9 | 2099 | http->getConn() != NULL ? http->getConn()->clientConnection->remote : tmp_noaddr, |
26ac0430 | 2100 | http->request); |
0185bd6f | 2101 | |
86a2f789 | 2102 | removeClientStoreReference(&sc, http); |
0185bd6f | 2103 | |
7dc5f514 | 2104 | HTTPMSGUNLOCK(reply); |
0185bd6f | 2105 | |
3c2c1d31 | 2106 | startError(err); |
2107 | ||
62e76326 | 2108 | return; |
2109 | } | |
2110 | ||
0976f8db | 2111 | /* Ok, the reply is allowed, */ |
2112 | http->loggingEntry(http->storeEntry()); | |
2113 | ||
7dc5f514 | 2114 | ssize_t body_size = reqofs - reply->hdr_sz; |
b297bcd0 | 2115 | if (body_size < 0) { |
26ac0430 AJ |
2116 | reqofs = reply->hdr_sz; |
2117 | body_size = 0; | |
b297bcd0 | 2118 | } |
0976f8db | 2119 | |
bf8fe701 | 2120 | debugs(88, 3, "clientReplyContext::sendMoreData: Appending " << |
2121 | (int) body_size << " bytes after " << reply->hdr_sz << | |
2122 | " bytes of headers"); | |
0976f8db | 2123 | |
f41735ea | 2124 | #if USE_SQUID_ESI |
62e76326 | 2125 | |
9b769c67 AJ |
2126 | if (http->flags.accel && reply->sline.status() != Http::scForbidden && |
2127 | !alwaysAllowResponse(reply->sline.status()) && | |
7dc5f514 | 2128 | esiEnableProcessing(reply)) { |
bf8fe701 | 2129 | debugs(88, 2, "Enabling ESI processing for " << http->uri); |
43ae1d95 | 2130 | clientStreamInsertHead(&http->client_stream, esiStreamRead, |
2131 | esiProcessStream, esiStreamDetach, esiStreamStatus, NULL); | |
2132 | } | |
2133 | ||
5ef38a13 | 2134 | #endif |
2135 | ||
c2a7cefd | 2136 | if (http->request->method == Http::METHOD_HEAD) { |
62e76326 | 2137 | /* do not forward body for HEAD replies */ |
2138 | body_size = 0; | |
be4d35dc | 2139 | http->flags.done_copying = true; |
62e76326 | 2140 | flags.complete = 1; |
2141 | } | |
2142 | ||
2143 | assert (!flags.headersSent); | |
2144 | flags.headersSent = true; | |
2145 | ||
8bcf08e0 | 2146 | StoreIOBuffer localTempBuffer; |
62e76326 | 2147 | char *buf = next()->readBuffer.data; |
e85eb4e1 | 2148 | char *body_buf = buf + reply->hdr_sz; |
62e76326 | 2149 | |
49ea0125 | 2150 | //Server side may disable ranges under some circumstances. |
2151 | ||
2152 | if ((!http->request->range)) | |
2153 | next()->readBuffer.offset = 0; | |
2154 | ||
e85eb4e1 AJ |
2155 | body_buf -= next()->readBuffer.offset; |
2156 | ||
62e76326 | 2157 | if (next()->readBuffer.offset != 0) { |
2158 | if (next()->readBuffer.offset > body_size) { | |
2324cda2 | 2159 | /* Can't use any of the body we received. send nothing */ |
8bcf08e0 FC |
2160 | localTempBuffer.length = 0; |
2161 | localTempBuffer.data = NULL; | |
62e76326 | 2162 | } else { |
8bcf08e0 FC |
2163 | localTempBuffer.length = body_size - next()->readBuffer.offset; |
2164 | localTempBuffer.data = body_buf + next()->readBuffer.offset; | |
62e76326 | 2165 | } |
2166 | } else { | |
8bcf08e0 FC |
2167 | localTempBuffer.length = body_size; |
2168 | localTempBuffer.data = body_buf; | |
62e76326 | 2169 | } |
2170 | ||
0655fa4d | 2171 | /* TODO??: move the data in the buffer back by the request header size */ |
62e76326 | 2172 | clientStreamCallback((clientStreamNode *)http->client_stream.head->data, |
8bcf08e0 | 2173 | http, reply, localTempBuffer); |
62e76326 | 2174 | |
2175 | return; | |
4993f571 | 2176 | } |
2177 | ||
528b2c61 | 2178 | void |
2179 | clientReplyContext::sendMoreData (StoreIOBuffer result) | |
2180 | { | |
50c09fc4 | 2181 | if (deleting) |
2182 | return; | |
2183 | ||
86a2f789 | 2184 | StoreEntry *entry = http->storeEntry(); |
50c09fc4 | 2185 | |
cda7024f CT |
2186 | if (ConnStateData * conn = http->getConn()) { |
2187 | if (!conn->isOpen()) { | |
2188 | debugs(33,3, "not sending more data to closing connection " << conn->clientConnection); | |
2189 | return; | |
2190 | } | |
2191 | if (conn->pinning.zeroReply) { | |
2192 | debugs(33,3, "not sending more data after a pinned zero reply " << conn->clientConnection); | |
2193 | return; | |
2194 | } | |
50c09fc4 | 2195 | |
4b5ea8a6 | 2196 | if (reqofs==0 && !http->logType.isTcpHit()) { |
cda7024f CT |
2197 | if (Ip::Qos::TheConfig.isHitTosActive()) { |
2198 | Ip::Qos::doTosLocalMiss(conn->clientConnection, http->request->hier.code); | |
2199 | } | |
2200 | if (Ip::Qos::TheConfig.isHitNfmarkActive()) { | |
2201 | Ip::Qos::doNfmarkLocalMiss(conn->clientConnection, http->request->hier.code); | |
2202 | } | |
2203 | } | |
2204 | ||
4b5ea8a6 | 2205 | debugs(88, 5, conn->clientConnection << |
cda7024f CT |
2206 | " '" << entry->url() << "'" << |
2207 | " out.offset=" << http->out.offset); | |
9af2f95b | 2208 | } |
50c09fc4 | 2209 | |
528b2c61 | 2210 | char *buf = next()->readBuffer.data; |
50c09fc4 | 2211 | |
da33c835 | 2212 | if (buf != result.data) { |
62e76326 | 2213 | /* we've got to copy some data */ |
2214 | assert(result.length <= next()->readBuffer.length); | |
41d00cd3 | 2215 | memcpy(buf, result.data, result.length); |
edce4d98 | 2216 | } |
62e76326 | 2217 | |
ab9c533b HN |
2218 | /* We've got the final data to start pushing... */ |
2219 | flags.storelogiccomplete = 1; | |
2220 | ||
4993f571 | 2221 | reqofs += result.length; |
2222 | ||
2223 | assert(reqofs <= HTTP_REQBUF_SZ || flags.headersSent); | |
62e76326 | 2224 | |
edce4d98 | 2225 | assert(http->request != NULL); |
62e76326 | 2226 | |
edce4d98 | 2227 | /* ESI TODO: remove this assert once everything is stable */ |
2228 | assert(http->client_stream.head->data | |
62e76326 | 2229 | && cbdataReferenceValid(http->client_stream.head->data)); |
528b2c61 | 2230 | |
2231 | makeThisHead(); | |
62e76326 | 2232 | |
bf8fe701 | 2233 | debugs(88, 5, "clientReplyContext::sendMoreData: " << http->uri << ", " << |
47f6e231 | 2234 | reqofs << " bytes (" << result.length << |
bf8fe701 | 2235 | " new bytes)"); |
528b2c61 | 2236 | |
edce4d98 | 2237 | /* update size of the request */ |
4993f571 | 2238 | reqsize = reqofs; |
62e76326 | 2239 | |
4993f571 | 2240 | if (errorInStream(result, reqofs)) { |
62e76326 | 2241 | sendStreamError(result); |
2242 | return; | |
edce4d98 | 2243 | } |
528b2c61 | 2244 | |
2245 | if (flags.headersSent) { | |
62e76326 | 2246 | pushStreamData (result, buf); |
2247 | return; | |
edce4d98 | 2248 | } |
62e76326 | 2249 | |
b297bcd0 | 2250 | cloneReply(); |
21b92762 | 2251 | |
c4a9875e VL |
2252 | #if USE_DELAY_POOLS |
2253 | if (sc) | |
2254 | sc->setDelayId(DelayId::DelayClient(http,reply)); | |
2255 | #endif | |
2256 | ||
b297bcd0 | 2257 | /* handle headers */ |
21b92762 | 2258 | |
b297bcd0 | 2259 | if (Config.onoff.log_mime_hdrs) { |
26ac0430 | 2260 | size_t k; |
43ae1d95 | 2261 | |
26ac0430 | 2262 | if ((k = headersEnd(buf, reqofs))) { |
41ebd397 CT |
2263 | safe_free(http->al->headers.reply); |
2264 | http->al->headers.reply = (char *)xcalloc(k + 1, 1); | |
2265 | xstrncpy(http->al->headers.reply, buf, k); | |
26ac0430 | 2266 | } |
edce4d98 | 2267 | } |
b297bcd0 HN |
2268 | |
2269 | holdingBuffer = result; | |
2270 | processReplyAccess(); | |
2271 | return; | |
edce4d98 | 2272 | } |
2273 | ||
edce4d98 | 2274 | /* Using this breaks the client layering just a little! |
2275 | */ | |
0655fa4d | 2276 | void |
f206b652 | 2277 | clientReplyContext::createStoreEntry(const HttpRequestMethod& m, RequestFlags reqFlags) |
edce4d98 | 2278 | { |
0655fa4d | 2279 | assert(http != NULL); |
edce4d98 | 2280 | /* |
2281 | * For erroneous requests, we might not have a h->request, | |
2282 | * so make a fake one. | |
2283 | */ | |
62e76326 | 2284 | |
b248c2a3 | 2285 | if (http->request == NULL) { |
5ceaee75 CT |
2286 | const MasterXaction::Pointer mx = new MasterXaction(XactionInitiator::initClient); |
2287 | http->request = new HttpRequest(m, AnyP::PROTO_NONE, "http", null_string, mx); | |
b248c2a3 AJ |
2288 | HTTPMSGLOCK(http->request); |
2289 | } | |
62e76326 | 2290 | |
a8a0b1c2 | 2291 | StoreEntry *e = storeCreateEntry(storeId(), http->log_uri, reqFlags, m); |
62e76326 | 2292 | |
e4d13993 AR |
2293 | // Make entry collapsable ASAP, to increase collapsing chances for others, |
2294 | // TODO: every must-revalidate and similar request MUST reach the origin, | |
2295 | // but do we have to prohibit others from collapsing on that request? | |
9a9954ba | 2296 | if (Config.onoff.collapsed_forwarding && reqFlags.cachable && |
9d4e9cfb AR |
2297 | !reqFlags.needValidation && |
2298 | (m == Http::METHOD_GET || m == Http::METHOD_HEAD)) { | |
9a9954ba AR |
2299 | // make the entry available for future requests now |
2300 | Store::Root().allowCollapsing(e, reqFlags, m); | |
2301 | } | |
2302 | ||
0655fa4d | 2303 | sc = storeClientListAdd(e, this); |
62e76326 | 2304 | |
9a0a18de | 2305 | #if USE_DELAY_POOLS |
0655fa4d | 2306 | sc->setDelayId(DelayId::DelayClient(http)); |
edce4d98 | 2307 | #endif |
62e76326 | 2308 | |
0655fa4d | 2309 | reqofs = 0; |
62e76326 | 2310 | |
0655fa4d | 2311 | reqsize = 0; |
62e76326 | 2312 | |
edce4d98 | 2313 | /* I don't think this is actually needed! -- adrian */ |
0655fa4d | 2314 | /* http->reqbuf = http->norm_reqbuf; */ |
2315 | // assert(http->reqbuf == http->norm_reqbuf); | |
edce4d98 | 2316 | /* The next line is illegal because we don't know if the client stream |
26ac0430 | 2317 | * buffers have been set up |
edce4d98 | 2318 | */ |
0655fa4d | 2319 | // storeClientCopy(http->sc, e, 0, HTTP_REQBUF_SZ, http->reqbuf, |
2320 | // SendMoreData, this); | |
edce4d98 | 2321 | /* So, we mark the store logic as complete */ |
8bcf08e0 | 2322 | flags.storelogiccomplete = 1; |
62e76326 | 2323 | |
edce4d98 | 2324 | /* and get the caller to request a read, from whereever they are */ |
62e76326 | 2325 | /* NOTE: after ANY data flows down the pipe, even one step, |
26ac0430 | 2326 | * this function CAN NOT be used to manage errors |
edce4d98 | 2327 | */ |
86a2f789 | 2328 | http->storeEntry(e); |
edce4d98 | 2329 | } |
2330 | ||
2331 | ErrorState * | |
955394ce | 2332 | clientBuildError(err_type page_id, Http::StatusCode status, char const *url, |
b7ac5457 | 2333 | Ip::Address &src_addr, HttpRequest * request) |
edce4d98 | 2334 | { |
913524f0 | 2335 | ErrorState *err = new ErrorState(page_id, status, request); |
cc192b50 | 2336 | err->src_addr = src_addr; |
62e76326 | 2337 | |
edce4d98 | 2338 | if (url) |
62e76326 | 2339 | err->url = xstrdup(url); |
2340 | ||
edce4d98 | 2341 | return err; |
2342 | } | |
f53969cc | 2343 |