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edce4d98 | 1 | /* |
77b1029d | 2 | * Copyright (C) 1996-2020 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" |
582c2af2 FC |
40 | #if USE_AUTH |
41 | #include "auth/UserRequest.h" | |
42 | #endif | |
43 | #if USE_DELAY_POOLS | |
44 | #include "DelayPools.h" | |
45 | #endif | |
46 | #if USE_SQUID_ESI | |
47 | #include "esi/Esi.h" | |
48 | #endif | |
e6ccf245 | 49 | |
3e4f6092 FC |
50 | #include <memory> |
51 | ||
0655fa4d | 52 | CBDATA_CLASS_INIT(clientReplyContext); |
edce4d98 | 53 | |
edce4d98 | 54 | /* Local functions */ |
e6ccf245 | 55 | extern "C" CSS clientReplyStatus; |
7e6eabbc | 56 | ErrorState *clientBuildError(err_type, Http::StatusCode, char const *, Ip::Address &, HttpRequest *, const AccessLogEntry::Pointer &); |
edce4d98 | 57 | |
edce4d98 | 58 | /* privates */ |
edce4d98 | 59 | |
0655fa4d | 60 | clientReplyContext::~clientReplyContext() |
edce4d98 | 61 | { |
50c09fc4 | 62 | deleting = true; |
63 | /* This may trigger a callback back into SendMoreData as the cbdata | |
64 | * is still valid | |
65 | */ | |
86a2f789 | 66 | removeClientStoreReference(&sc, http); |
edce4d98 | 67 | /* old_entry might still be set if we didn't yet get the reply |
0655fa4d | 68 | * code in HandleIMSReply() */ |
69 | removeStoreReference(&old_sc, &old_entry); | |
70 | safe_free(tempBuffer.data); | |
71 | cbdataReferenceDone(http); | |
2b7d324b | 72 | HTTPMSGUNLOCK(reply); |
edce4d98 | 73 | } |
74 | ||
cc8c4af2 AJ |
75 | clientReplyContext::clientReplyContext(ClientHttpRequest *clientContext) : |
76 | purgeStatus(Http::scNone), | |
77 | lookingforstore(0), | |
78 | http(cbdataReference(clientContext)), | |
67969886 | 79 | headers_sz(0), |
cc8c4af2 AJ |
80 | sc(NULL), |
81 | old_reqsize(0), | |
82 | reqsize(0), | |
83 | reqofs(0), | |
84 | #if USE_CACHE_DIGESTS | |
85 | lookup_type(NULL), | |
86 | #endif | |
87 | ourNode(NULL), | |
88 | reply(NULL), | |
89 | old_entry(NULL), | |
90 | old_sc(NULL), | |
e7e0f8a4 | 91 | old_lastmod(-1), |
1a210de4 EB |
92 | deleting(false), |
93 | collapsedRevalidation(crNone) | |
cc8c4af2 AJ |
94 | { |
95 | *tempbuf = 0; | |
96 | } | |
edce4d98 | 97 | |
a5c8d64d AJ |
98 | /** Create an error in the store awaiting the client side to read it. |
99 | * | |
100 | * This may be better placed in the clientStream logic, but it has not been | |
0655fa4d | 101 | * relocated there yet |
102 | */ | |
edce4d98 | 103 | void |
0655fa4d | 104 | clientReplyContext::setReplyToError( |
955394ce | 105 | err_type err, Http::StatusCode status, const HttpRequestMethod& method, char const *uri, |
b7ac5457 | 106 | Ip::Address &addr, HttpRequest * failedrequest, const char *unparsedrequest, |
2f1431ea | 107 | #if USE_AUTH |
c7baff40 | 108 | Auth::UserRequest::Pointer auth_user_request |
2f1431ea | 109 | #else |
9d2b8284 | 110 | void* |
2f1431ea | 111 | #endif |
74174c03 | 112 | ) |
edce4d98 | 113 | { |
7e6eabbc | 114 | auto errstate = clientBuildError(err, status, uri, addr, failedrequest, http->al); |
62e76326 | 115 | |
edce4d98 | 116 | if (unparsedrequest) |
62e76326 | 117 | errstate->request_hdrs = xstrdup(unparsedrequest); |
edce4d98 | 118 | |
8eb0a7ee CT |
119 | #if USE_AUTH |
120 | errstate->auth_user_request = auth_user_request; | |
121 | #endif | |
122 | setReplyToError(method, errstate); | |
123 | } | |
124 | ||
125 | void clientReplyContext::setReplyToError(const HttpRequestMethod& method, ErrorState *errstate) | |
126 | { | |
955394ce | 127 | if (errstate->httpStatus == Http::scNotImplemented && http->request) |
62e76326 | 128 | /* prevent confusion over whether we default to persistent or not */ |
e857372a | 129 | http->request->flags.proxyKeepalive = false; |
62e76326 | 130 | |
41ebd397 | 131 | http->al->http.code = errstate->httpStatus; |
edce4d98 | 132 | |
f0baf149 AR |
133 | if (http->request) |
134 | http->request->ignoreRange("responding with a Squid-generated error"); | |
135 | ||
f206b652 | 136 | createStoreEntry(method, RequestFlags()); |
edce4d98 | 137 | assert(errstate->callback_data == NULL); |
86a2f789 | 138 | errorAppendEntry(http->storeEntry(), errstate); |
edce4d98 | 139 | /* Now the caller reads to get this */ |
140 | } | |
141 | ||
eacfca83 AR |
142 | void |
143 | clientReplyContext::setReplyToReply(HttpReply *futureReply) | |
144 | { | |
145 | Must(futureReply); | |
146 | http->al->http.code = futureReply->sline.status(); | |
147 | ||
148 | HttpRequestMethod method; | |
149 | if (http->request) { // nil on responses to unparsable requests | |
150 | http->request->ignoreRange("responding with a Squid-generated reply"); | |
151 | method = http->request->method; | |
152 | } | |
153 | ||
154 | createStoreEntry(method, RequestFlags()); | |
155 | ||
156 | http->storeEntry()->storeErrorResponse(futureReply); | |
157 | /* Now the caller reads to get futureReply */ | |
158 | } | |
159 | ||
f0baf149 AR |
160 | // Assumes that the entry contains an error response without Content-Range. |
161 | // To use with regular entries, make HTTP Range header removal conditional. | |
162 | void clientReplyContext::setReplyToStoreEntry(StoreEntry *entry, const char *reason) | |
061bbdec | 163 | { |
1bfe9ade | 164 | entry->lock("clientReplyContext::setReplyToStoreEntry"); // removeClientStoreReference() unlocks |
061bbdec CT |
165 | sc = storeClientListAdd(entry, this); |
166 | #if USE_DELAY_POOLS | |
167 | sc->setDelayId(DelayId::DelayClient(http)); | |
168 | #endif | |
169 | reqofs = 0; | |
170 | reqsize = 0; | |
f0baf149 AR |
171 | if (http->request) |
172 | http->request->ignoreRange(reason); | |
061bbdec CT |
173 | flags.storelogiccomplete = 1; |
174 | http->storeEntry(entry); | |
175 | } | |
176 | ||
edce4d98 | 177 | void |
0655fa4d | 178 | clientReplyContext::removeStoreReference(store_client ** scp, |
179 | StoreEntry ** ep) | |
edce4d98 | 180 | { |
181 | StoreEntry *e; | |
e4ae841b | 182 | store_client *sc_tmp = *scp; |
62e76326 | 183 | |
edce4d98 | 184 | if ((e = *ep) != NULL) { |
62e76326 | 185 | *ep = NULL; |
e4ae841b | 186 | storeUnregister(sc_tmp, e, this); |
62e76326 | 187 | *scp = NULL; |
1bfe9ade | 188 | e->unlock("clientReplyContext::removeStoreReference"); |
edce4d98 | 189 | } |
190 | } | |
191 | ||
86a2f789 | 192 | void |
8bcf08e0 | 193 | clientReplyContext::removeClientStoreReference(store_client **scp, ClientHttpRequest *aHttpRequest) |
86a2f789 | 194 | { |
8bcf08e0 | 195 | StoreEntry *reference = aHttpRequest->storeEntry(); |
86a2f789 | 196 | removeStoreReference(scp, &reference); |
8bcf08e0 | 197 | aHttpRequest->storeEntry(reference); |
86a2f789 | 198 | } |
199 | ||
edce4d98 | 200 | void |
0655fa4d | 201 | clientReplyContext::saveState() |
edce4d98 | 202 | { |
e6ccf245 | 203 | assert(old_sc == NULL); |
bf8fe701 | 204 | debugs(88, 3, "clientReplyContext::saveState: saving store context"); |
86a2f789 | 205 | old_entry = http->storeEntry(); |
e6ccf245 | 206 | old_sc = sc; |
e7e0f8a4 EB |
207 | old_lastmod = http->request->lastmod; |
208 | old_etag = http->request->etag; | |
e6ccf245 | 209 | old_reqsize = reqsize; |
210 | tempBuffer.offset = reqofs; | |
edce4d98 | 211 | /* Prevent accessing the now saved entries */ |
86a2f789 | 212 | http->storeEntry(NULL); |
e6ccf245 | 213 | sc = NULL; |
214 | reqsize = 0; | |
215 | reqofs = 0; | |
edce4d98 | 216 | } |
217 | ||
218 | void | |
0655fa4d | 219 | clientReplyContext::restoreState() |
edce4d98 | 220 | { |
e6ccf245 | 221 | assert(old_sc != NULL); |
bf8fe701 | 222 | debugs(88, 3, "clientReplyContext::restoreState: Restoring store context"); |
86a2f789 | 223 | removeClientStoreReference(&sc, http); |
224 | http->storeEntry(old_entry); | |
e6ccf245 | 225 | sc = old_sc; |
226 | reqsize = old_reqsize; | |
227 | reqofs = tempBuffer.offset; | |
e7e0f8a4 EB |
228 | http->request->lastmod = old_lastmod; |
229 | http->request->etag = old_etag; | |
edce4d98 | 230 | /* Prevent accessed the old saved entries */ |
0655fa4d | 231 | old_entry = NULL; |
e6ccf245 | 232 | old_sc = NULL; |
e7e0f8a4 EB |
233 | old_lastmod = -1; |
234 | old_etag.clean(); | |
e6ccf245 | 235 | old_reqsize = 0; |
236 | tempBuffer.offset = 0; | |
c8be6d7b | 237 | } |
238 | ||
239 | void | |
0655fa4d | 240 | clientReplyContext::startError(ErrorState * err) |
c8be6d7b | 241 | { |
f206b652 | 242 | createStoreEntry(http->request->method, RequestFlags()); |
0655fa4d | 243 | triggerInitialStoreRead(); |
86a2f789 | 244 | errorAppendEntry(http->storeEntry(), err); |
edce4d98 | 245 | } |
246 | ||
e6ccf245 | 247 | clientStreamNode * |
528b2c61 | 248 | clientReplyContext::getNextNode() const |
e6ccf245 | 249 | { |
62e76326 | 250 | return (clientStreamNode *)ourNode->node.next->data; |
e6ccf245 | 251 | } |
252 | ||
62e76326 | 253 | /* This function is wrong - the client parameters don't include the |
528b2c61 | 254 | * header offset |
255 | */ | |
c8be6d7b | 256 | void |
0655fa4d | 257 | clientReplyContext::triggerInitialStoreRead() |
c8be6d7b | 258 | { |
0655fa4d | 259 | /* when confident, 0 becomes reqofs, and then this factors into |
26ac0430 | 260 | * startSendProcess |
528b2c61 | 261 | */ |
0655fa4d | 262 | assert(reqofs == 0); |
8bcf08e0 FC |
263 | StoreIOBuffer localTempBuffer (next()->readBuffer.length, 0, next()->readBuffer.data); |
264 | storeClientCopy(sc, http->storeEntry(), localTempBuffer, SendMoreData, this); | |
c8be6d7b | 265 | } |
edce4d98 | 266 | |
267 | /* there is an expired entry in the store. | |
268 | * setup a temporary buffer area and perform an IMS to the origin | |
269 | */ | |
0655fa4d | 270 | void |
271 | clientReplyContext::processExpired() | |
edce4d98 | 272 | { |
a8a0b1c2 | 273 | const char *url = storeId(); |
bf8fe701 | 274 | debugs(88, 3, "clientReplyContext::processExpired: '" << http->uri << "'"); |
438b41ba EB |
275 | const time_t lastmod = http->storeEntry()->lastModified(); |
276 | assert(lastmod >= 0); | |
edce4d98 | 277 | /* |
278 | * check if we are allowed to contact other servers | |
26ac0430 | 279 | * @?@: Instead of a 504 (Gateway Timeout) reply, we may want to return |
edce4d98 | 280 | * a stale entry *if* it matches client requirements |
281 | */ | |
62e76326 | 282 | |
0655fa4d | 283 | if (http->onlyIfCached()) { |
284 | processOnlyIfCachedMiss(); | |
62e76326 | 285 | return; |
edce4d98 | 286 | } |
62e76326 | 287 | |
d2a6dcba | 288 | http->logType.update(LOG_TCP_REFRESH); |
e857372a | 289 | http->request->flags.refresh = true; |
edce4d98 | 290 | #if STORE_CLIENT_LIST_DEBUG |
c8be6d7b | 291 | /* Prevent a race with the store client memory free routines |
edce4d98 | 292 | */ |
0655fa4d | 293 | assert(storeClientIsThisAClient(sc, this)); |
edce4d98 | 294 | #endif |
295 | /* Prepare to make a new temporary request */ | |
0655fa4d | 296 | saveState(); |
1a210de4 | 297 | |
d2a6dcba | 298 | // TODO: Consider also allowing regular (non-collapsed) revalidation hits. |
1a210de4 | 299 | // TODO: support collapsed revalidation for Vary-controlled entries |
819be284 | 300 | bool collapsingAllowed = Config.onoff.collapsed_forwarding && |
daed75a9 | 301 | !Store::Controller::SmpAware() && |
819be284 | 302 | http->request->vary_headers.isEmpty(); |
1a210de4 EB |
303 | |
304 | StoreEntry *entry = nullptr; | |
305 | if (collapsingAllowed) { | |
819be284 | 306 | if (const auto e = storeGetPublicByRequest(http->request, ksRevalidation)) { |
d2a6dcba | 307 | if (e->hittingRequiresCollapsing() && startCollapsingOn(*e, true)) { |
819be284 EB |
308 | entry = e; |
309 | entry->lock("clientReplyContext::processExpired#alreadyRevalidating"); | |
310 | } else { | |
311 | e->abandon(__FUNCTION__); | |
312 | // assume mayInitiateCollapsing() would fail too | |
313 | collapsingAllowed = false; | |
314 | } | |
315 | } | |
1a210de4 EB |
316 | } |
317 | ||
318 | if (entry) { | |
76d61119 | 319 | entry->ensureMemObject(url, http->log_uri, http->request->method); |
1a210de4 EB |
320 | debugs(88, 5, "collapsed on existing revalidation entry: " << *entry); |
321 | collapsedRevalidation = crSlave; | |
322 | } else { | |
323 | entry = storeCreateEntry(url, | |
324 | http->log_uri, http->request->flags, http->request->method); | |
325 | /* NOTE, don't call StoreEntry->lock(), storeCreateEntry() does it */ | |
326 | ||
819be284 EB |
327 | if (collapsingAllowed && mayInitiateCollapsing() && |
328 | Store::Root().allowCollapsing(entry, http->request->flags, http->request->method)) { | |
1a210de4 | 329 | debugs(88, 5, "allow other revalidation requests to collapse on " << *entry); |
1a210de4 EB |
330 | collapsedRevalidation = crInitiator; |
331 | } else { | |
332 | collapsedRevalidation = crNone; | |
333 | } | |
334 | } | |
335 | ||
0655fa4d | 336 | sc = storeClientListAdd(entry, this); |
9a0a18de | 337 | #if USE_DELAY_POOLS |
edce4d98 | 338 | /* delay_id is already set on original store client */ |
0655fa4d | 339 | sc->setDelayId(DelayId::DelayClient(http)); |
edce4d98 | 340 | #endif |
62e76326 | 341 | |
438b41ba | 342 | http->request->lastmod = lastmod; |
46017fdd | 343 | |
789217a2 | 344 | if (!http->request->header.has(Http::HdrType::IF_NONE_MATCH)) { |
46017fdd CT |
345 | ETag etag = {NULL, -1}; // TODO: make that a default ETag constructor |
346 | if (old_entry->hasEtag(etag) && !etag.weak) | |
347 | http->request->etag = etag.str; | |
348 | } | |
349 | ||
438b41ba | 350 | debugs(88, 5, "lastmod " << entry->lastModified()); |
86a2f789 | 351 | http->storeEntry(entry); |
c8be6d7b | 352 | assert(http->out.offset == 0); |
9174ba3d | 353 | assert(http->request->clientConnectionManager == http->getConn()); |
655daa06 | 354 | |
1a210de4 EB |
355 | if (collapsedRevalidation != crSlave) { |
356 | /* | |
357 | * A refcounted pointer so that FwdState stays around as long as | |
358 | * this clientReplyContext does | |
359 | */ | |
360 | Comm::ConnectionPointer conn = http->getConn() != NULL ? http->getConn()->clientConnection : NULL; | |
361 | FwdState::Start(conn, http->storeEntry(), http->request, http->al); | |
362 | } | |
edce4d98 | 363 | /* Register with storage manager to receive updates when data comes in. */ |
62e76326 | 364 | |
edce4d98 | 365 | if (EBIT_TEST(entry->flags, ENTRY_ABORTED)) |
fa84c01d | 366 | debugs(88, DBG_CRITICAL, "clientReplyContext::processExpired: Found ENTRY_ABORTED object"); |
62e76326 | 367 | |
c8be6d7b | 368 | { |
62e76326 | 369 | /* start counting the length from 0 */ |
8bcf08e0 FC |
370 | StoreIOBuffer localTempBuffer(HTTP_REQBUF_SZ, 0, tempbuf); |
371 | storeClientCopy(sc, entry, localTempBuffer, HandleIMSReply, this); | |
edce4d98 | 372 | } |
373 | } | |
374 | ||
528b2c61 | 375 | void |
376 | clientReplyContext::sendClientUpstreamResponse() | |
377 | { | |
378 | StoreIOBuffer tempresult; | |
0655fa4d | 379 | removeStoreReference(&old_sc, &old_entry); |
2324cda2 | 380 | /* here the data to send is the data we just received */ |
528b2c61 | 381 | tempBuffer.offset = 0; |
382 | old_reqsize = 0; | |
0655fa4d | 383 | /* sendMoreData tracks the offset as well. |
528b2c61 | 384 | * Force it back to zero */ |
385 | reqofs = 0; | |
86a2f789 | 386 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 387 | /* TODO: provide sendMoreData with the ready parsed reply */ |
528b2c61 | 388 | tempresult.length = reqsize; |
389 | tempresult.data = tempbuf; | |
0655fa4d | 390 | sendMoreData(tempresult); |
528b2c61 | 391 | } |
392 | ||
edce4d98 | 393 | void |
0655fa4d | 394 | clientReplyContext::HandleIMSReply(void *data, StoreIOBuffer result) |
edce4d98 | 395 | { |
e6ccf245 | 396 | clientReplyContext *context = (clientReplyContext *)data; |
0655fa4d | 397 | context->handleIMSReply(result); |
398 | } | |
62e76326 | 399 | |
0655fa4d | 400 | void |
401 | clientReplyContext::sendClientOldEntry() | |
402 | { | |
403 | /* Get the old request back */ | |
404 | restoreState(); | |
405 | /* here the data to send is in the next nodes buffers already */ | |
86a2f789 | 406 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 407 | /* sendMoreData tracks the offset as well. |
408 | * Force it back to zero */ | |
409 | reqofs = 0; | |
410 | StoreIOBuffer tempresult (reqsize, reqofs, next()->readBuffer.data); | |
411 | sendMoreData(tempresult); | |
412 | } | |
62e76326 | 413 | |
1d7ab0f4 | 414 | /* This is the workhorse of the HandleIMSReply callback. |
415 | * | |
416 | * It is called when we've got data back from the origin following our | |
417 | * IMS request to revalidate a stale entry. | |
418 | */ | |
0655fa4d | 419 | void |
1d7ab0f4 | 420 | clientReplyContext::handleIMSReply(StoreIOBuffer result) |
0655fa4d | 421 | { |
1d7ab0f4 | 422 | if (deleting) |
423 | return; | |
62e76326 | 424 | |
eace013e | 425 | debugs(88, 3, http->storeEntry()->url() << ", " << (long unsigned) result.length << " bytes"); |
62e76326 | 426 | |
1d7ab0f4 | 427 | if (http->storeEntry() == NULL) |
428 | return; | |
07947ad8 | 429 | |
1d7ab0f4 | 430 | if (result.flags.error && !EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) |
431 | return; | |
62e76326 | 432 | |
39fe14b2 EB |
433 | if (collapsedRevalidation == crSlave && !http->storeEntry()->mayStartHitting()) { |
434 | debugs(88, 3, "CF slave hit private non-shareable " << *http->storeEntry() << ". MISS"); | |
096c9df3 EB |
435 | // restore context to meet processMiss() expectations |
436 | restoreState(); | |
d2a6dcba | 437 | http->logType.update(LOG_TCP_MISS); |
096c9df3 EB |
438 | processMiss(); |
439 | return; | |
440 | } | |
441 | ||
1d7ab0f4 | 442 | /* update size of the request */ |
443 | reqsize = result.length + reqofs; | |
62e76326 | 444 | |
1d7ab0f4 | 445 | // request to origin was aborted |
446 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) { | |
eace013e | 447 | debugs(88, 3, "request to origin aborted '" << http->storeEntry()->url() << "', sending old entry to client"); |
d2a6dcba | 448 | http->logType.update(LOG_TCP_REFRESH_FAIL_OLD); |
1d7ab0f4 | 449 | sendClientOldEntry(); |
0655fa4d | 450 | } |
62e76326 | 451 | |
66d51f4f AR |
452 | const auto oldStatus = old_entry->mem().freshestReply().sline.status(); |
453 | const auto &new_rep = http->storeEntry()->mem().freshestReply(); | |
454 | const auto status = new_rep.sline.status(); | |
62e76326 | 455 | |
b297bcd0 | 456 | // origin replied 304 |
955394ce | 457 | if (status == Http::scNotModified) { |
d2a6dcba | 458 | http->logType.update(LOG_TCP_REFRESH_UNMODIFIED); |
e857372a | 459 | http->request->flags.staleIfHit = false; // old_entry is no longer stale |
045a76ab | 460 | |
66d51f4f AR |
461 | // TODO: The update may not be instantaneous. Should we wait for its |
462 | // completion to avoid spawning too much client-disassociated work? | |
abf396ec | 463 | Store::Root().updateOnNotModified(old_entry, *http->storeEntry()); |
62e76326 | 464 | |
26ac0430 | 465 | // if client sent IMS |
62e76326 | 466 | |
438b41ba | 467 | if (http->request->flags.ims && !old_entry->modifiedSince(http->request->ims, http->request->imslen)) { |
26ac0430 | 468 | // forward the 304 from origin |
eace013e | 469 | debugs(88, 3, "origin replied 304, revalidating existing entry and forwarding 304 to client"); |
26ac0430 AJ |
470 | sendClientUpstreamResponse(); |
471 | } else { | |
472 | // send existing entry, it's still valid | |
eace013e | 473 | debugs(88, 3, "origin replied 304, revalidating existing entry and sending " << |
66d51f4f | 474 | oldStatus << " to client"); |
26ac0430 AJ |
475 | sendClientOldEntry(); |
476 | } | |
b297bcd0 | 477 | } |
62e76326 | 478 | |
b297bcd0 | 479 | // origin replied with a non-error code |
955394ce | 480 | else if (status > Http::scNone && status < Http::scInternalServerError) { |
eace013e EB |
481 | // RFC 7234 section 4: a cache MUST use the most recent response |
482 | // (as determined by the Date header field) | |
66d51f4f | 483 | if (new_rep.olderThan(&old_entry->mem().freshestReply())) { |
eace013e EB |
484 | http->logType.err.ignored = true; |
485 | debugs(88, 3, "origin replied " << status << | |
486 | " but with an older date header, sending old entry (" << | |
66d51f4f | 487 | oldStatus << ") to client"); |
eace013e EB |
488 | sendClientOldEntry(); |
489 | } else { | |
d2a6dcba | 490 | http->logType.update(LOG_TCP_REFRESH_MODIFIED); |
eace013e EB |
491 | debugs(88, 3, "origin replied " << status << |
492 | ", replacing existing entry and forwarding to client"); | |
1a210de4 | 493 | |
eace013e EB |
494 | if (collapsedRevalidation) |
495 | http->storeEntry()->clearPublicKeyScope(); | |
1a210de4 | 496 | |
eace013e EB |
497 | sendClientUpstreamResponse(); |
498 | } | |
b297bcd0 | 499 | } |
62e76326 | 500 | |
b297bcd0 | 501 | // origin replied with an error |
450fe1cb | 502 | else if (http->request->flags.failOnValidationError) { |
d2a6dcba | 503 | http->logType.update(LOG_TCP_REFRESH_FAIL_ERR); |
eace013e | 504 | debugs(88, 3, "origin replied with error " << status << |
7948b784 AR |
505 | ", forwarding to client due to fail_on_validation_err"); |
506 | sendClientUpstreamResponse(); | |
507 | } else { | |
26ac0430 | 508 | // ignore and let client have old entry |
d2a6dcba | 509 | http->logType.update(LOG_TCP_REFRESH_FAIL_OLD); |
eace013e | 510 | debugs(88, 3, "origin replied with error " << |
66d51f4f | 511 | status << ", sending old entry (" << oldStatus << ") to client"); |
26ac0430 | 512 | sendClientOldEntry(); |
1d7ab0f4 | 513 | } |
edce4d98 | 514 | } |
515 | ||
82afb125 FC |
516 | SQUIDCEXTERN CSR clientGetMoreData; |
517 | SQUIDCEXTERN CSD clientReplyDetach; | |
edce4d98 | 518 | |
7d5f62a4 AJ |
519 | /** |
520 | * clientReplyContext::cacheHit Should only be called until the HTTP reply headers | |
edce4d98 | 521 | * have been parsed. Normally this should be a single call, but |
522 | * it might take more than one. As soon as we have the headers, | |
0655fa4d | 523 | * we hand off to clientSendMoreData, processExpired, or |
524 | * processMiss. | |
edce4d98 | 525 | */ |
526 | void | |
0655fa4d | 527 | clientReplyContext::CacheHit(void *data, StoreIOBuffer result) |
edce4d98 | 528 | { |
e6ccf245 | 529 | clientReplyContext *context = (clientReplyContext *)data; |
7d5f62a4 | 530 | context->cacheHit(result); |
0655fa4d | 531 | } |
532 | ||
7d5f62a4 AJ |
533 | /** |
534 | * Process a possible cache HIT. | |
535 | */ | |
0655fa4d | 536 | void |
537 | clientReplyContext::cacheHit(StoreIOBuffer result) | |
538 | { | |
7d5f62a4 | 539 | /** Ignore if the HIT object is being deleted. */ |
1b7514d9 AJ |
540 | if (deleting) { |
541 | debugs(88, 3, "HIT object being deleted. Ignore the HIT."); | |
045a76ab | 542 | return; |
1b7514d9 | 543 | } |
045a76ab | 544 | |
86a2f789 | 545 | StoreEntry *e = http->storeEntry(); |
045a76ab | 546 | |
190154cf | 547 | HttpRequest *r = http->request; |
045a76ab | 548 | |
4a7a3d56 | 549 | debugs(88, 3, "clientCacheHit: " << http->uri << ", " << result.length << " bytes"); |
62e76326 | 550 | |
86a2f789 | 551 | if (http->storeEntry() == NULL) { |
bf8fe701 | 552 | debugs(88, 3, "clientCacheHit: request aborted"); |
62e76326 | 553 | return; |
c8be6d7b | 554 | } else if (result.flags.error) { |
62e76326 | 555 | /* swap in failure */ |
bf8fe701 | 556 | debugs(88, 3, "clientCacheHit: swapin failure for " << http->uri); |
d2a6dcba | 557 | http->logType.update(LOG_TCP_SWAPFAIL_MISS); |
86a2f789 | 558 | removeClientStoreReference(&sc, http); |
0655fa4d | 559 | processMiss(); |
62e76326 | 560 | return; |
edce4d98 | 561 | } |
62e76326 | 562 | |
096c9df3 EB |
563 | // The previously identified hit suddenly became unsharable! |
564 | // This is common for collapsed forwarding slaves but might also | |
565 | // happen to regular hits because we are called asynchronously. | |
39fe14b2 | 566 | if (!e->mayStartHitting()) { |
096c9df3 | 567 | debugs(88, 3, "unsharable " << *e << ". MISS"); |
d2a6dcba | 568 | http->logType.update(LOG_TCP_MISS); |
096c9df3 EB |
569 | processMiss(); |
570 | return; | |
571 | } | |
572 | ||
d3b3ab85 | 573 | if (result.length == 0) { |
1b7514d9 | 574 | debugs(88, 5, "store IO buffer has no content. MISS"); |
62e76326 | 575 | /* the store couldn't get enough data from the file for us to id the |
576 | * object | |
577 | */ | |
578 | /* treat as a miss */ | |
d2a6dcba | 579 | http->logType.update(LOG_TCP_MISS); |
0655fa4d | 580 | processMiss(); |
62e76326 | 581 | return; |
d3b3ab85 | 582 | } |
62e76326 | 583 | |
edce4d98 | 584 | assert(!EBIT_TEST(e->flags, ENTRY_ABORTED)); |
585 | /* update size of the request */ | |
0655fa4d | 586 | reqsize = result.length + reqofs; |
62e76326 | 587 | |
edce4d98 | 588 | /* |
589 | * Got the headers, now grok them | |
590 | */ | |
91369933 | 591 | assert(http->logType.oldType == LOG_TCP_HIT); |
62e76326 | 592 | |
851feda6 | 593 | if (http->request->storeId().cmp(e->mem_obj->storeId()) != 0) { |
c877c0bc | 594 | debugs(33, DBG_IMPORTANT, "clientProcessHit: URL mismatch, '" << e->mem_obj->storeId() << "' != '" << http->request->storeId() << "'"); |
d2a6dcba | 595 | http->logType.update(LOG_TCP_MISS); // we lack a more precise LOG_*_MISS code |
cdd4e1c1 | 596 | processMiss(); |
597 | return; | |
598 | } | |
599 | ||
edce4d98 | 600 | switch (varyEvaluateMatch(e, r)) { |
62e76326 | 601 | |
edce4d98 | 602 | case VARY_NONE: |
62e76326 | 603 | /* No variance detected. Continue as normal */ |
604 | break; | |
605 | ||
edce4d98 | 606 | case VARY_MATCH: |
62e76326 | 607 | /* This is the correct entity for this request. Continue */ |
bf8fe701 | 608 | debugs(88, 2, "clientProcessHit: Vary MATCH!"); |
62e76326 | 609 | break; |
610 | ||
edce4d98 | 611 | case VARY_OTHER: |
62e76326 | 612 | /* This is not the correct entity for this request. We need |
613 | * to requery the cache. | |
614 | */ | |
86a2f789 | 615 | removeClientStoreReference(&sc, http); |
62e76326 | 616 | e = NULL; |
617 | /* Note: varyEvalyateMatch updates the request with vary information | |
618 | * so we only get here once. (it also takes care of cancelling loops) | |
619 | */ | |
26ac0430 | 620 | debugs(88, 2, "clientProcessHit: Vary detected!"); |
0655fa4d | 621 | clientGetMoreData(ourNode, http); |
62e76326 | 622 | return; |
623 | ||
edce4d98 | 624 | case VARY_CANCEL: |
62e76326 | 625 | /* varyEvaluateMatch found a object loop. Process as miss */ |
e0236918 | 626 | debugs(88, DBG_IMPORTANT, "clientProcessHit: Vary object loop!"); |
d2a6dcba | 627 | http->logType.update(LOG_TCP_MISS); // we lack a more precise LOG_*_MISS code |
0655fa4d | 628 | processMiss(); |
62e76326 | 629 | return; |
edce4d98 | 630 | } |
62e76326 | 631 | |
c2a7cefd | 632 | if (r->method == Http::METHOD_PURGE) { |
1b7514d9 | 633 | debugs(88, 5, "PURGE gets a HIT"); |
86a2f789 | 634 | removeClientStoreReference(&sc, http); |
62e76326 | 635 | e = NULL; |
0655fa4d | 636 | purgeRequest(); |
62e76326 | 637 | return; |
edce4d98 | 638 | } |
62e76326 | 639 | |
1b7514d9 AJ |
640 | if (e->checkNegativeHit() && !r->flags.noCacheHack()) { |
641 | debugs(88, 5, "negative-HIT"); | |
d2a6dcba | 642 | http->logType.update(LOG_TCP_NEGATIVE_HIT); |
0655fa4d | 643 | sendMoreData(result); |
ec4011ac | 644 | return; |
70706149 AR |
645 | } else if (blockedHit()) { |
646 | debugs(88, 5, "send_hit forces a MISS"); | |
d2a6dcba | 647 | http->logType.update(LOG_TCP_MISS); |
70706149 AR |
648 | processMiss(); |
649 | return; | |
bcfba8bd | 650 | } else if (!http->flags.internal && refreshCheckHTTP(e, r)) { |
bf8fe701 | 651 | debugs(88, 5, "clientCacheHit: in refreshCheck() block"); |
62e76326 | 652 | /* |
653 | * We hold a stale copy; it needs to be validated | |
654 | */ | |
655 | /* | |
450fe1cb | 656 | * The 'needValidation' flag is used to prevent forwarding |
62e76326 | 657 | * loops between siblings. If our copy of the object is stale, |
658 | * then we should probably only use parents for the validation | |
659 | * request. Otherwise two siblings could generate a loop if | |
660 | * both have a stale version of the object. | |
661 | */ | |
e857372a | 662 | r->flags.needValidation = true; |
62e76326 | 663 | |
438b41ba EB |
664 | if (e->lastModified() < 0) { |
665 | debugs(88, 3, "validate HIT object? NO. Can't calculate entry modification time. Do MISS."); | |
62e76326 | 666 | /* |
438b41ba EB |
667 | * We cannot revalidate entries without knowing their |
668 | * modification time. | |
669 | * XXX: BUG 1890 objects without Date do not get one added. | |
62e76326 | 670 | */ |
d2a6dcba | 671 | http->logType.update(LOG_TCP_MISS); |
0655fa4d | 672 | processMiss(); |
450fe1cb | 673 | } else if (r->flags.noCache) { |
86310427 | 674 | debugs(88, 3, "validate HIT object? NO. Client sent CC:no-cache. Do CLIENT_REFRESH_MISS"); |
62e76326 | 675 | /* |
676 | * This did not match a refresh pattern that overrides no-cache | |
677 | * we should honour the client no-cache header. | |
678 | */ | |
d2a6dcba | 679 | http->logType.update(LOG_TCP_CLIENT_REFRESH_MISS); |
0655fa4d | 680 | processMiss(); |
ec4568e3 | 681 | } else if (r->url.getScheme() == AnyP::PROTO_HTTP || r->url.getScheme() == AnyP::PROTO_HTTPS) { |
86310427 | 682 | debugs(88, 3, "validate HIT object? YES."); |
62e76326 | 683 | /* |
684 | * Object needs to be revalidated | |
685 | * XXX This could apply to FTP as well, if Last-Modified is known. | |
686 | */ | |
0655fa4d | 687 | processExpired(); |
62e76326 | 688 | } else { |
86310427 | 689 | debugs(88, 3, "validate HIT object? NO. Client protocol non-HTTP. Do MISS."); |
62e76326 | 690 | /* |
691 | * We don't know how to re-validate other protocols. Handle | |
692 | * them as if the object has expired. | |
693 | */ | |
d2a6dcba | 694 | http->logType.update(LOG_TCP_MISS); |
0655fa4d | 695 | processMiss(); |
62e76326 | 696 | } |
ec4011ac | 697 | return; |
1b7514d9 AJ |
698 | } else if (r->conditional()) { |
699 | debugs(88, 5, "conditional HIT"); | |
acd68301 GD |
700 | if (processConditional(result)) |
701 | return; | |
702 | } | |
703 | ||
704 | /* | |
705 | * plain ol' cache hit | |
706 | */ | |
707 | debugs(88, 5, "plain old HIT"); | |
62e76326 | 708 | |
9a0a18de | 709 | #if USE_DELAY_POOLS |
acd68301 | 710 | if (e->store_status != STORE_OK) |
d2a6dcba | 711 | http->logType.update(LOG_TCP_MISS); |
acd68301 | 712 | else |
5bf4d170 | 713 | #endif |
acd68301 | 714 | if (e->mem_status == IN_MEMORY) |
d2a6dcba | 715 | http->logType.update(LOG_TCP_MEM_HIT); |
acd68301 | 716 | else if (Config.onoff.offline) |
d2a6dcba | 717 | http->logType.update(LOG_TCP_OFFLINE_HIT); |
62e76326 | 718 | |
acd68301 | 719 | sendMoreData(result); |
edce4d98 | 720 | } |
721 | ||
7d5f62a4 | 722 | /** |
edce4d98 | 723 | * Prepare to fetch the object as it's a cache miss of some kind. |
724 | */ | |
725 | void | |
0655fa4d | 726 | clientReplyContext::processMiss() |
edce4d98 | 727 | { |
edce4d98 | 728 | char *url = http->uri; |
190154cf | 729 | HttpRequest *r = http->request; |
edce4d98 | 730 | ErrorState *err = NULL; |
7f06a3d8 | 731 | debugs(88, 4, r->method << ' ' << url); |
7d5f62a4 AJ |
732 | |
733 | /** | |
edce4d98 | 734 | * We might have a left-over StoreEntry from a failed cache hit |
735 | * or IMS request. | |
736 | */ | |
86a2f789 | 737 | if (http->storeEntry()) { |
738 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_SPECIAL)) { | |
fa84c01d | 739 | debugs(88, DBG_CRITICAL, "clientProcessMiss: miss on a special object (" << url << ")."); |
91369933 | 740 | debugs(88, DBG_CRITICAL, "\tlog_type = " << http->logType.c_str()); |
3900307b | 741 | http->storeEntry()->dump(1); |
62e76326 | 742 | } |
743 | ||
86a2f789 | 744 | removeClientStoreReference(&sc, http); |
edce4d98 | 745 | } |
62e76326 | 746 | |
7d5f62a4 | 747 | /** Check if its a PURGE request to be actioned. */ |
c2a7cefd | 748 | if (r->method == Http::METHOD_PURGE) { |
0655fa4d | 749 | purgeRequest(); |
62e76326 | 750 | return; |
edce4d98 | 751 | } |
914b89a2 | 752 | |
7d5f62a4 | 753 | /** Check if its an 'OTHER' request. Purge all cached entries if so and continue. */ |
c2a7cefd | 754 | if (r->method == Http::METHOD_OTHER) { |
26ac0430 | 755 | purgeAllCached(); |
60745f24 | 756 | } |
62e76326 | 757 | |
7d5f62a4 | 758 | /** Check if 'only-if-cached' flag is set. Action if so. */ |
0655fa4d | 759 | if (http->onlyIfCached()) { |
760 | processOnlyIfCachedMiss(); | |
62e76326 | 761 | return; |
edce4d98 | 762 | } |
62e76326 | 763 | |
6b4edefb | 764 | Comm::ConnectionPointer conn = http->getConn() != nullptr ? http->getConn()->clientConnection : nullptr; |
42829656 | 765 | /// Deny loops |
450fe1cb | 766 | if (r->flags.loopDetected) { |
955394ce | 767 | http->al->http.code = Http::scForbidden; |
6b4edefb CT |
768 | Ip::Address tmp_noaddr; |
769 | tmp_noaddr.setNoAddr(); | |
7e6eabbc | 770 | err = clientBuildError(ERR_ACCESS_DENIED, Http::scForbidden, nullptr, conn ? conn->remote : tmp_noaddr, http->request, http->al); |
f206b652 | 771 | createStoreEntry(r->method, RequestFlags()); |
86a2f789 | 772 | errorAppendEntry(http->storeEntry(), err); |
0655fa4d | 773 | triggerInitialStoreRead(); |
62e76326 | 774 | return; |
edce4d98 | 775 | } else { |
26ac0430 | 776 | assert(http->out.offset == 0); |
0655fa4d | 777 | createStoreEntry(r->method, r->flags); |
778 | triggerInitialStoreRead(); | |
62e76326 | 779 | |
780 | if (http->redirect.status) { | |
66d51f4f | 781 | const HttpReplyPointer rep(new HttpReply); |
d2a6dcba | 782 | http->logType.update(LOG_TCP_REDIRECT); |
d88e3c49 | 783 | http->storeEntry()->releaseRequest(); |
06a5ae20 | 784 | rep->redirect(http->redirect.status, http->redirect.location); |
db237875 | 785 | http->storeEntry()->replaceHttpReply(rep); |
86a2f789 | 786 | http->storeEntry()->complete(); |
62e76326 | 787 | return; |
788 | } | |
789 | ||
9174ba3d | 790 | assert(r->clientConnectionManager == http->getConn()); |
655daa06 | 791 | |
7d5f62a4 | 792 | /** Start forwarding to get the new object from network */ |
4bf68cfa | 793 | FwdState::Start(conn, http->storeEntry(), r, http->al); |
edce4d98 | 794 | } |
795 | } | |
796 | ||
7d5f62a4 | 797 | /** |
edce4d98 | 798 | * client issued a request with an only-if-cached cache-control directive; |
799 | * we did not find a cached object that can be returned without | |
800 | * contacting other servers; | |
801 | * respond with a 504 (Gateway Timeout) as suggested in [RFC 2068] | |
802 | */ | |
0655fa4d | 803 | void |
804 | clientReplyContext::processOnlyIfCachedMiss() | |
edce4d98 | 805 | { |
7f06a3d8 | 806 | debugs(88, 4, http->request->method << ' ' << http->uri); |
f11c8e2f | 807 | http->al->http.code = Http::scGatewayTimeout; |
6b4edefb CT |
808 | Ip::Address tmp_noaddr; |
809 | tmp_noaddr.setNoAddr(); | |
f11c8e2f | 810 | ErrorState *err = clientBuildError(ERR_ONLY_IF_CACHED_MISS, Http::scGatewayTimeout, NULL, |
6b4edefb | 811 | http->getConn() ? http->getConn()->clientConnection->remote : tmp_noaddr, |
7e6eabbc | 812 | http->request, http->al); |
86a2f789 | 813 | removeClientStoreReference(&sc, http); |
0655fa4d | 814 | startError(err); |
edce4d98 | 815 | } |
816 | ||
79c8035e | 817 | /// process conditional request from client |
acd68301 | 818 | bool |
79c8035e AR |
819 | clientReplyContext::processConditional(StoreIOBuffer &result) |
820 | { | |
a2bd457d | 821 | StoreEntry *const e = http->storeEntry(); |
79c8035e | 822 | |
66d51f4f AR |
823 | const auto replyStatusCode = e->mem().baseReply().sline.status(); |
824 | if (replyStatusCode != Http::scOkay) { | |
825 | debugs(88, 4, "miss because " << replyStatusCode << " != 200"); | |
d2a6dcba | 826 | http->logType.update(LOG_TCP_MISS); |
79c8035e | 827 | processMiss(); |
acd68301 | 828 | return true; |
79c8035e AR |
829 | } |
830 | ||
831 | HttpRequest &r = *http->request; | |
832 | ||
789217a2 | 833 | if (r.header.has(Http::HdrType::IF_MATCH) && !e->hasIfMatchEtag(r)) { |
79c8035e AR |
834 | // RFC 2616: reply with 412 Precondition Failed if If-Match did not match |
835 | sendPreconditionFailedError(); | |
acd68301 | 836 | return true; |
79c8035e AR |
837 | } |
838 | ||
789217a2 | 839 | if (r.header.has(Http::HdrType::IF_NONE_MATCH)) { |
787ea68c GD |
840 | // RFC 7232: If-None-Match recipient MUST ignore IMS |
841 | r.flags.ims = false; | |
842 | r.ims = -1; | |
843 | r.imslen = 0; | |
844 | r.header.delById(Http::HdrType::IF_MODIFIED_SINCE); | |
79c8035e | 845 | |
787ea68c | 846 | if (e->hasIfNoneMatchEtag(r)) { |
a2bd457d | 847 | sendNotModifiedOrPreconditionFailedError(); |
acd68301 | 848 | return true; |
79c8035e AR |
849 | } |
850 | ||
787ea68c GD |
851 | // None-Match is true (no ETag matched); treat as an unconditional hit |
852 | return false; | |
79c8035e AR |
853 | } |
854 | ||
45e5102d | 855 | if (r.flags.ims) { |
79c8035e | 856 | // handle If-Modified-Since requests from the client |
438b41ba | 857 | if (e->modifiedSince(r.ims, r.imslen)) { |
2e2ef19a SM |
858 | // Modified-Since is true; treat as an unconditional hit |
859 | return false; | |
79c8035e | 860 | |
acd68301 GD |
861 | } else { |
862 | // otherwise reply with 304 Not Modified | |
863 | sendNotModified(); | |
864 | } | |
865 | return true; | |
79c8035e | 866 | } |
acd68301 GD |
867 | |
868 | return false; | |
79c8035e AR |
869 | } |
870 | ||
70706149 AR |
871 | /// whether squid.conf send_hit prevents us from serving this hit |
872 | bool | |
873 | clientReplyContext::blockedHit() const | |
874 | { | |
875 | if (!Config.accessList.sendHit) | |
876 | return false; // hits are not blocked by default | |
877 | ||
878 | if (http->flags.internal) | |
879 | return false; // internal content "hits" cannot be blocked | |
880 | ||
66d51f4f AR |
881 | const auto &rep = http->storeEntry()->mem().freshestReply(); |
882 | { | |
829030b5 | 883 | std::unique_ptr<ACLFilledChecklist> chl(clientAclChecklistCreate(Config.accessList.sendHit, http)); |
66d51f4f | 884 | chl->reply = const_cast<HttpReply*>(&rep); // ACLChecklist API bug |
70706149 | 885 | HTTPMSGLOCK(chl->reply); |
06bf5384 | 886 | return !chl->fastCheck().allowed(); // when in doubt, block |
70706149 | 887 | } |
70706149 AR |
888 | } |
889 | ||
edce4d98 | 890 | void |
e6ccf245 | 891 | clientReplyContext::purgeRequestFindObjectToPurge() |
26ac0430 | 892 | { |
e6ccf245 | 893 | /* Try to find a base entry */ |
be4d35dc | 894 | http->flags.purging = true; |
e6ccf245 | 895 | lookingforstore = 1; |
26ac0430 AJ |
896 | |
897 | // TODO: can we use purgeAllCached() here instead of doing the | |
898 | // getPublicByRequestMethod() dance? | |
c2a7cefd | 899 | StoreEntry::getPublicByRequestMethod(this, http->request, Http::METHOD_GET); |
e6ccf245 | 900 | } |
901 | ||
c1520b67 AJ |
902 | // Purges all entries with a given url |
903 | // TODO: move to SideAgent parent, when we have one | |
60745f24 | 904 | /* |
905 | * We probably cannot purge Vary-affected responses because their MD5 | |
906 | * keys depend on vary headers. | |
907 | */ | |
c1520b67 | 908 | void |
90bd689c | 909 | purgeEntriesByUrl(HttpRequest * req, const char *url) |
c1520b67 | 910 | { |
c2a7cefd AJ |
911 | for (HttpRequestMethod m(Http::METHOD_NONE); m != Http::METHOD_ENUM_END; ++m) { |
912 | if (m.respMaybeCacheable()) { | |
4310f8b0 EB |
913 | const cache_key *key = storeKeyPublic(url, m); |
914 | debugs(88, 5, m << ' ' << url << ' ' << storeKeyText(key)); | |
90bd689c | 915 | #if USE_HTCP |
4310f8b0 | 916 | neighborsHtcpClear(nullptr, url, req, m, HTCP_CLR_INVALIDATION); |
90bd689c | 917 | #endif |
4310f8b0 | 918 | Store::Root().evictIfFound(key); |
c1520b67 AJ |
919 | } |
920 | } | |
921 | } | |
922 | ||
26ac0430 | 923 | void |
60745f24 | 924 | clientReplyContext::purgeAllCached() |
925 | { | |
851feda6 AJ |
926 | // XXX: performance regression, c_str() reallocates |
927 | SBuf url(http->request->effectiveRequestUri()); | |
928 | purgeEntriesByUrl(http->request, url.c_str()); | |
35ececa5 | 929 | } |
60745f24 | 930 | |
e6ccf245 | 931 | void |
3b13a8fd | 932 | clientReplyContext::created(StoreEntry *newEntry) |
e6ccf245 | 933 | { |
934 | if (lookingforstore == 1) | |
62e76326 | 935 | purgeFoundGet(newEntry); |
e6ccf245 | 936 | else if (lookingforstore == 2) |
62e76326 | 937 | purgeFoundHead(newEntry); |
e6ccf245 | 938 | else if (lookingforstore == 3) |
62e76326 | 939 | purgeDoPurgeGet(newEntry); |
e6ccf245 | 940 | else if (lookingforstore == 4) |
62e76326 | 941 | purgeDoPurgeHead(newEntry); |
e6ccf245 | 942 | else if (lookingforstore == 5) |
62e76326 | 943 | identifyFoundObject(newEntry); |
e6ccf245 | 944 | } |
945 | ||
d2a6dcba EB |
946 | LogTags * |
947 | clientReplyContext::loggingTags() | |
948 | { | |
949 | // XXX: clientReplyContext code assumes that http cbdata is always valid. | |
950 | // TODO: Either add cbdataReferenceValid(http) checks in all the relevant | |
951 | // places, like this one, or remove cbdata protection of the http member. | |
952 | return &http->logType; | |
953 | } | |
954 | ||
e6ccf245 | 955 | void |
3b13a8fd | 956 | clientReplyContext::purgeFoundGet(StoreEntry *newEntry) |
e6ccf245 | 957 | { |
69565793 | 958 | if (!newEntry) { |
62e76326 | 959 | lookingforstore = 2; |
c2a7cefd | 960 | StoreEntry::getPublicByRequestMethod(this, http->request, Http::METHOD_HEAD); |
e6ccf245 | 961 | } else |
62e76326 | 962 | purgeFoundObject (newEntry); |
e6ccf245 | 963 | } |
964 | ||
965 | void | |
3b13a8fd | 966 | clientReplyContext::purgeFoundHead(StoreEntry *newEntry) |
e6ccf245 | 967 | { |
69565793 | 968 | if (!newEntry) |
62e76326 | 969 | purgeDoMissPurge(); |
e6ccf245 | 970 | else |
62e76326 | 971 | purgeFoundObject (newEntry); |
e6ccf245 | 972 | } |
62e76326 | 973 | |
e6ccf245 | 974 | void |
3b13a8fd | 975 | clientReplyContext::purgeFoundObject(StoreEntry *entry) |
e6ccf245 | 976 | { |
69565793 | 977 | assert (entry); |
e4b9a2f0 | 978 | |
979 | if (EBIT_TEST(entry->flags, ENTRY_SPECIAL)) { | |
d2a6dcba | 980 | http->logType.update(LOG_TCP_DENIED); |
6b4edefb CT |
981 | Ip::Address tmp_noaddr; |
982 | tmp_noaddr.setNoAddr(); // TODO: make a global const | |
955394ce | 983 | ErrorState *err = clientBuildError(ERR_ACCESS_DENIED, Http::scForbidden, NULL, |
6b4edefb | 984 | http->getConn() ? http->getConn()->clientConnection->remote : tmp_noaddr, |
7e6eabbc | 985 | http->request, http->al); |
e4b9a2f0 | 986 | startError(err); |
c877c0bc | 987 | return; // XXX: leaking unused entry if some store does not keep it |
e4b9a2f0 | 988 | } |
989 | ||
8bcf08e0 | 990 | StoreIOBuffer localTempBuffer; |
62e76326 | 991 | /* Swap in the metadata */ |
86a2f789 | 992 | http->storeEntry(entry); |
34266cde | 993 | |
1bfe9ade | 994 | http->storeEntry()->lock("clientReplyContext::purgeFoundObject"); |
76d61119 | 995 | http->storeEntry()->ensureMemObject(storeId(), http->log_uri, |
c877c0bc | 996 | http->request->method); |
34266cde | 997 | |
86a2f789 | 998 | sc = storeClientListAdd(http->storeEntry(), this); |
34266cde | 999 | |
d2a6dcba | 1000 | http->logType.update(LOG_TCP_HIT); |
34266cde | 1001 | |
62e76326 | 1002 | reqofs = 0; |
34266cde | 1003 | |
8bcf08e0 | 1004 | localTempBuffer.offset = http->out.offset; |
34266cde | 1005 | |
8bcf08e0 | 1006 | localTempBuffer.length = next()->readBuffer.length; |
34266cde | 1007 | |
8bcf08e0 | 1008 | localTempBuffer.data = next()->readBuffer.data; |
34266cde | 1009 | |
86a2f789 | 1010 | storeClientCopy(sc, http->storeEntry(), |
8bcf08e0 | 1011 | localTempBuffer, CacheHit, this); |
e6ccf245 | 1012 | } |
1013 | ||
1014 | void | |
1015 | clientReplyContext::purgeRequest() | |
edce4d98 | 1016 | { |
bf8fe701 | 1017 | debugs(88, 3, "Config2.onoff.enable_purge = " << |
1018 | Config2.onoff.enable_purge); | |
62e76326 | 1019 | |
edce4d98 | 1020 | if (!Config2.onoff.enable_purge) { |
d2a6dcba | 1021 | http->logType.update(LOG_TCP_DENIED); |
6b4edefb CT |
1022 | Ip::Address tmp_noaddr; |
1023 | tmp_noaddr.setNoAddr(); | |
1024 | ErrorState *err = clientBuildError(ERR_ACCESS_DENIED, Http::scForbidden, NULL, | |
7e6eabbc | 1025 | http->getConn() ? http->getConn()->clientConnection->remote : tmp_noaddr, http->request, http->al); |
0655fa4d | 1026 | startError(err); |
62e76326 | 1027 | return; |
edce4d98 | 1028 | } |
62e76326 | 1029 | |
edce4d98 | 1030 | /* Release both IP cache */ |
5c51bffb | 1031 | ipcacheInvalidate(http->request->url.host()); |
edce4d98 | 1032 | |
e6ccf245 | 1033 | if (!http->flags.purging) |
62e76326 | 1034 | purgeRequestFindObjectToPurge(); |
e6ccf245 | 1035 | else |
62e76326 | 1036 | purgeDoMissPurge(); |
e6ccf245 | 1037 | } |
1038 | ||
1039 | void | |
1040 | clientReplyContext::purgeDoMissPurge() | |
1041 | { | |
d2a6dcba | 1042 | http->logType.update(LOG_TCP_MISS); |
e6ccf245 | 1043 | lookingforstore = 3; |
c2a7cefd | 1044 | StoreEntry::getPublicByRequestMethod(this,http->request, Http::METHOD_GET); |
e6ccf245 | 1045 | } |
1046 | ||
1047 | void | |
3b13a8fd | 1048 | clientReplyContext::purgeDoPurgeGet(StoreEntry *newEntry) |
e6ccf245 | 1049 | { |
69565793 EB |
1050 | if (newEntry) { |
1051 | /* Move to new() when that is created */ | |
1052 | purgeStatus = Http::scNotFound; | |
62e76326 | 1053 | /* Release the cached URI */ |
bf8fe701 | 1054 | debugs(88, 4, "clientPurgeRequest: GET '" << newEntry->url() << "'" ); |
8dceeee3 | 1055 | #if USE_HTCP |
c2a7cefd | 1056 | neighborsHtcpClear(newEntry, NULL, http->request, HttpRequestMethod(Http::METHOD_GET), HTCP_CLR_PURGE); |
8dceeee3 | 1057 | #endif |
4310f8b0 | 1058 | newEntry->release(true); |
955394ce | 1059 | purgeStatus = Http::scOkay; |
edce4d98 | 1060 | } |
62e76326 | 1061 | |
e6ccf245 | 1062 | lookingforstore = 4; |
c2a7cefd | 1063 | StoreEntry::getPublicByRequestMethod(this, http->request, Http::METHOD_HEAD); |
e6ccf245 | 1064 | } |
1065 | ||
1066 | void | |
3b13a8fd | 1067 | clientReplyContext::purgeDoPurgeHead(StoreEntry *newEntry) |
e6ccf245 | 1068 | { |
69565793 | 1069 | if (newEntry) { |
851feda6 | 1070 | debugs(88, 4, "HEAD " << newEntry->url()); |
8dceeee3 | 1071 | #if USE_HTCP |
c2a7cefd | 1072 | neighborsHtcpClear(newEntry, NULL, http->request, HttpRequestMethod(Http::METHOD_HEAD), HTCP_CLR_PURGE); |
8dceeee3 | 1073 | #endif |
4310f8b0 | 1074 | newEntry->release(true); |
955394ce | 1075 | purgeStatus = Http::scOkay; |
edce4d98 | 1076 | } |
62e76326 | 1077 | |
edce4d98 | 1078 | /* And for Vary, release the base URI if none of the headers was included in the request */ |
90ab8f20 AJ |
1079 | if (!http->request->vary_headers.isEmpty() |
1080 | && http->request->vary_headers.find('=') != SBuf::npos) { | |
851feda6 AJ |
1081 | // XXX: performance regression, c_str() reallocates |
1082 | SBuf tmp(http->request->effectiveRequestUri()); | |
1083 | StoreEntry *entry = storeGetPublic(tmp.c_str(), Http::METHOD_GET); | |
62e76326 | 1084 | |
1085 | if (entry) { | |
851feda6 | 1086 | debugs(88, 4, "Vary GET " << entry->url()); |
8dceeee3 | 1087 | #if USE_HTCP |
c2a7cefd | 1088 | neighborsHtcpClear(entry, NULL, http->request, HttpRequestMethod(Http::METHOD_GET), HTCP_CLR_PURGE); |
8dceeee3 | 1089 | #endif |
4310f8b0 | 1090 | entry->release(true); |
955394ce | 1091 | purgeStatus = Http::scOkay; |
62e76326 | 1092 | } |
1093 | ||
851feda6 | 1094 | entry = storeGetPublic(tmp.c_str(), Http::METHOD_HEAD); |
62e76326 | 1095 | |
1096 | if (entry) { | |
851feda6 | 1097 | debugs(88, 4, "Vary HEAD " << entry->url()); |
8dceeee3 | 1098 | #if USE_HTCP |
c2a7cefd | 1099 | neighborsHtcpClear(entry, NULL, http->request, HttpRequestMethod(Http::METHOD_HEAD), HTCP_CLR_PURGE); |
8dceeee3 | 1100 | #endif |
4310f8b0 | 1101 | entry->release(true); |
955394ce | 1102 | purgeStatus = Http::scOkay; |
62e76326 | 1103 | } |
edce4d98 | 1104 | } |
62e76326 | 1105 | |
edce4d98 | 1106 | /* |
1107 | * Make a new entry to hold the reply to be written | |
1108 | * to the client. | |
1109 | */ | |
528b2c61 | 1110 | /* FIXME: This doesn't need to go through the store. Simply |
1111 | * push down the client chain | |
1112 | */ | |
f206b652 | 1113 | createStoreEntry(http->request->method, RequestFlags()); |
62e76326 | 1114 | |
0655fa4d | 1115 | triggerInitialStoreRead(); |
62e76326 | 1116 | |
66d51f4f | 1117 | const HttpReplyPointer rep(new HttpReply); |
11992b6f | 1118 | rep->setHeaders(purgeStatus, NULL, NULL, 0, 0, -1); |
7dc5f514 | 1119 | http->storeEntry()->replaceHttpReply(rep); |
86a2f789 | 1120 | http->storeEntry()->complete(); |
edce4d98 | 1121 | } |
1122 | ||
1123 | void | |
0655fa4d | 1124 | clientReplyContext::traceReply(clientStreamNode * node) |
edce4d98 | 1125 | { |
076df709 | 1126 | clientStreamNode *nextNode = (clientStreamNode *)node->node.next->data; |
8bcf08e0 | 1127 | StoreIOBuffer localTempBuffer; |
f206b652 | 1128 | createStoreEntry(http->request->method, RequestFlags()); |
076df709 FC |
1129 | localTempBuffer.offset = nextNode->readBuffer.offset + headers_sz; |
1130 | localTempBuffer.length = nextNode->readBuffer.length; | |
1131 | localTempBuffer.data = nextNode->readBuffer.data; | |
86a2f789 | 1132 | storeClientCopy(sc, http->storeEntry(), |
8bcf08e0 | 1133 | localTempBuffer, SendMoreData, this); |
d88e3c49 | 1134 | http->storeEntry()->releaseRequest(); |
3900307b | 1135 | http->storeEntry()->buffer(); |
66d51f4f | 1136 | const HttpReplyPointer rep(new HttpReply); |
955394ce | 1137 | rep->setHeaders(Http::scOkay, NULL, "text/plain", http->request->prefixLen(), 0, squid_curtime); |
db237875 | 1138 | http->storeEntry()->replaceHttpReply(rep); |
5cafad19 | 1139 | http->request->swapOut(http->storeEntry()); |
86a2f789 | 1140 | http->storeEntry()->complete(); |
edce4d98 | 1141 | } |
1142 | ||
1143 | #define SENDING_BODY 0 | |
1144 | #define SENDING_HDRSONLY 1 | |
1145 | int | |
0655fa4d | 1146 | clientReplyContext::checkTransferDone() |
edce4d98 | 1147 | { |
86a2f789 | 1148 | StoreEntry *entry = http->storeEntry(); |
62e76326 | 1149 | |
edce4d98 | 1150 | if (entry == NULL) |
62e76326 | 1151 | return 0; |
1152 | ||
1153 | /* | |
edce4d98 | 1154 | * For now, 'done_copying' is used for special cases like |
1155 | * Range and HEAD requests. | |
1156 | */ | |
0655fa4d | 1157 | if (http->flags.done_copying) |
62e76326 | 1158 | return 1; |
1159 | ||
450fe1cb | 1160 | if (http->request->flags.chunkedReply && !flags.complete) { |
4ad60609 AR |
1161 | // last-chunk was not sent |
1162 | return 0; | |
1163 | } | |
1164 | ||
edce4d98 | 1165 | /* |
1166 | * Handle STORE_OK objects. | |
1167 | * objectLen(entry) will be set proprely. | |
26ac0430 | 1168 | * RC: Does objectLen(entry) include the Headers? |
0e3be1ea | 1169 | * RC: Yes. |
edce4d98 | 1170 | */ |
1171 | if (entry->store_status == STORE_OK) { | |
0655fa4d | 1172 | return storeOKTransferDone(); |
e39b9382 | 1173 | } else { |
0655fa4d | 1174 | return storeNotOKTransferDone(); |
edce4d98 | 1175 | } |
e39b9382 | 1176 | } |
1177 | ||
1178 | int | |
1179 | clientReplyContext::storeOKTransferDone() const | |
1180 | { | |
aa1a691e AR |
1181 | assert(http->storeEntry()->objectLen() >= 0); |
1182 | assert(http->storeEntry()->objectLen() >= headers_sz); | |
47f6e231 | 1183 | if (http->out.offset >= http->storeEntry()->objectLen() - headers_sz) { |
26ac0430 AJ |
1184 | debugs(88,3,HERE << "storeOKTransferDone " << |
1185 | " out.offset=" << http->out.offset << | |
1186 | " objectLen()=" << http->storeEntry()->objectLen() << | |
1187 | " headers_sz=" << headers_sz); | |
62e76326 | 1188 | return 1; |
47f6e231 | 1189 | } |
62e76326 | 1190 | |
e39b9382 | 1191 | return 0; |
1192 | } | |
1193 | ||
1194 | int | |
1195 | clientReplyContext::storeNotOKTransferDone() const | |
1196 | { | |
edce4d98 | 1197 | /* |
1198 | * Now, handle STORE_PENDING objects | |
1199 | */ | |
86a2f789 | 1200 | MemObject *mem = http->storeEntry()->mem_obj; |
edce4d98 | 1201 | assert(mem != NULL); |
1202 | assert(http->request != NULL); | |
62e76326 | 1203 | |
a0c227a9 | 1204 | /* mem->reply was wrong because it uses the UPSTREAM header length!!! */ |
e39b9382 | 1205 | if (headers_sz == 0) |
62e76326 | 1206 | /* haven't found end of headers yet */ |
1207 | return 0; | |
e39b9382 | 1208 | |
66d51f4f AR |
1209 | // TODO: Use MemObject::expectedReplySize(method) after resolving XXX below. |
1210 | const auto expectedBodySize = mem->baseReply().content_length; | |
1211 | ||
1212 | // XXX: The code below talks about sending data, and checks stats about | |
1213 | // bytes written to the client connection, but this method must determine | |
1214 | // whether we are done _receiving_ data from Store. This code should work OK | |
1215 | // when expectedBodySize is unknown or matches written data, but it may | |
1216 | // malfunction when we are writing ranges while receiving a full response. | |
a0c227a9 | 1217 | |
edce4d98 | 1218 | /* |
1219 | * Figure out how much data we are supposed to send. | |
1220 | * If we are sending a body and we don't have a content-length, | |
1221 | * then we must wait for the object to become STORE_OK. | |
1222 | */ | |
66d51f4f | 1223 | if (expectedBodySize < 0) |
62e76326 | 1224 | return 0; |
e39b9382 | 1225 | |
66d51f4f | 1226 | const uint64_t expectedLength = expectedBodySize + http->out.headers_sz; |
62e76326 | 1227 | |
e39b9382 | 1228 | if (http->out.size < expectedLength) |
62e76326 | 1229 | return 0; |
47f6e231 | 1230 | else { |
26ac0430 AJ |
1231 | debugs(88,3,HERE << "storeNotOKTransferDone " << |
1232 | " out.size=" << http->out.size << | |
1233 | " expectedLength=" << expectedLength); | |
62e76326 | 1234 | return 1; |
47f6e231 | 1235 | } |
edce4d98 | 1236 | } |
1237 | ||
edce4d98 | 1238 | /* A write has completed, what is the next status based on the |
1239 | * canonical request data? | |
1240 | * 1 something is wrong | |
1241 | * 0 nothing is wrong. | |
1242 | * | |
1243 | */ | |
1244 | int | |
59a1efb2 | 1245 | clientHttpRequestStatus(int fd, ClientHttpRequest const *http) |
edce4d98 | 1246 | { |
062f7f4e FC |
1247 | #if SIZEOF_INT64_T == 4 |
1248 | if (http->out.size > 0x7FFF0000) { | |
e0236918 | 1249 | debugs(88, DBG_IMPORTANT, "WARNING: closing FD " << fd << " to prevent out.size counter overflow"); |
6b4edefb CT |
1250 | if (http->getConn()) |
1251 | debugs(88, DBG_IMPORTANT, "\tclient " << http->getConn()->peer); | |
e0236918 FC |
1252 | debugs(88, DBG_IMPORTANT, "\treceived " << http->out.size << " bytes"); |
1253 | debugs(88, DBG_IMPORTANT, "\tURI " << http->log_uri); | |
062f7f4e FC |
1254 | return 1; |
1255 | } | |
1256 | ||
1257 | if (http->out.offset > 0x7FFF0000) { | |
e0236918 | 1258 | debugs(88, DBG_IMPORTANT, "WARNING: closing FD " << fd < " to prevent out.offset counter overflow"); |
6b4edefb CT |
1259 | if (http->getConn()) |
1260 | debugs(88, DBG_IMPORTANT, "\tclient " << http->getConn()->peer); | |
e0236918 FC |
1261 | debugs(88, DBG_IMPORTANT, "\treceived " << http->out.size << " bytes, offset " << http->out.offset); |
1262 | debugs(88, DBG_IMPORTANT, "\tURI " << http->log_uri); | |
062f7f4e FC |
1263 | return 1; |
1264 | } | |
1265 | ||
1266 | #endif | |
edce4d98 | 1267 | return 0; |
1268 | } | |
1269 | ||
62e76326 | 1270 | /* Preconditions: |
edce4d98 | 1271 | * *http is a valid structure. |
1272 | * fd is either -1, or an open fd. | |
1273 | * | |
1274 | * TODO: enumify this | |
1275 | * | |
1276 | * This function is used by any http request sink, to determine the status | |
1277 | * of the object. | |
1278 | */ | |
1279 | clientStream_status_t | |
59a1efb2 | 1280 | clientReplyStatus(clientStreamNode * aNode, ClientHttpRequest * http) |
edce4d98 | 1281 | { |
0655fa4d | 1282 | clientReplyContext *context = dynamic_cast<clientReplyContext *>(aNode->data.getRaw()); |
1283 | assert (context); | |
1284 | assert (context->http == http); | |
1285 | return context->replyStatus(); | |
1286 | } | |
1287 | ||
1288 | clientStream_status_t | |
1289 | clientReplyContext::replyStatus() | |
1290 | { | |
edce4d98 | 1291 | int done; |
1292 | /* Here because lower nodes don't need it */ | |
62e76326 | 1293 | |
3daaed1a | 1294 | if (http->storeEntry() == NULL) { |
1295 | debugs(88, 5, "clientReplyStatus: no storeEntry"); | |
f53969cc | 1296 | return STREAM_FAILED; /* yuck, but what can we do? */ |
3daaed1a | 1297 | } |
62e76326 | 1298 | |
3daaed1a | 1299 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) { |
62e76326 | 1300 | /* TODO: Could upstream read errors (result.flags.error) be |
1301 | * lost, and result in undersize requests being considered | |
1302 | * complete. Should we tcp reset such connections ? | |
1303 | */ | |
3daaed1a | 1304 | debugs(88, 5, "clientReplyStatus: aborted storeEntry"); |
62e76326 | 1305 | return STREAM_FAILED; |
3daaed1a | 1306 | } |
62e76326 | 1307 | |
0655fa4d | 1308 | if ((done = checkTransferDone()) != 0 || flags.complete) { |
1bfe9ade | 1309 | debugs(88, 5, "clientReplyStatus: transfer is DONE: " << done << flags.complete); |
62e76326 | 1310 | /* Ok we're finished, but how? */ |
1311 | ||
7224ca5a AR |
1312 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_BAD_LENGTH)) { |
1313 | debugs(88, 5, "clientReplyStatus: truncated response body"); | |
1314 | return STREAM_UNPLANNED_COMPLETE; | |
1315 | } | |
1316 | ||
62e76326 | 1317 | if (!done) { |
bf8fe701 | 1318 | debugs(88, 5, "clientReplyStatus: closing, !done, but read 0 bytes"); |
62e76326 | 1319 | return STREAM_FAILED; |
1320 | } | |
1321 | ||
66d51f4f | 1322 | // TODO: See also (and unify with) storeNotOKTransferDone() checks. |
14231db9 | 1323 | const int64_t expectedBodySize = |
66d51f4f | 1324 | http->storeEntry()->mem().baseReply().bodySize(http->request->method); |
4ad60609 | 1325 | if (expectedBodySize >= 0 && !http->gotEnough()) { |
bf8fe701 | 1326 | debugs(88, 5, "clientReplyStatus: client didn't get all it expected"); |
62e76326 | 1327 | return STREAM_UNPLANNED_COMPLETE; |
1328 | } | |
1329 | ||
ca6d5de2 AR |
1330 | debugs(88, 5, "clientReplyStatus: stream complete; keepalive=" << |
1331 | http->request->flags.proxyKeepalive); | |
1332 | return STREAM_COMPLETE; | |
edce4d98 | 1333 | } |
62e76326 | 1334 | |
16611143 | 1335 | // XXX: Should this be checked earlier? We could return above w/o checking. |
1336 | if (reply->receivedBodyTooLarge(*http->request, http->out.offset - 4096)) { | |
b51aec66 | 1337 | /* 4096 is a margin for the HTTP headers included in out.offset */ |
bf8fe701 | 1338 | debugs(88, 5, "clientReplyStatus: client reply body is too large"); |
62e76326 | 1339 | return STREAM_FAILED; |
0e3be1ea | 1340 | } |
62e76326 | 1341 | |
edce4d98 | 1342 | return STREAM_NONE; |
1343 | } | |
1344 | ||
62e76326 | 1345 | /* Responses with no body will not have a content-type header, |
edce4d98 | 1346 | * which breaks the rep_mime_type acl, which |
1347 | * coincidentally, is the most common acl for reply access lists. | |
1348 | * A better long term fix for this is to allow acl matchs on the various | |
26ac0430 AJ |
1349 | * status codes, and then supply a default ruleset that puts these |
1350 | * codes before any user defines access entries. That way the user | |
edce4d98 | 1351 | * can choose to block these responses where appropriate, but won't get |
1352 | * mysterious breakages. | |
1353 | */ | |
0655fa4d | 1354 | bool |
955394ce | 1355 | clientReplyContext::alwaysAllowResponse(Http::StatusCode sline) const |
edce4d98 | 1356 | { |
4ef4b952 | 1357 | bool result; |
1358 | ||
edce4d98 | 1359 | switch (sline) { |
62e76326 | 1360 | |
955394ce | 1361 | case Http::scContinue: |
62e76326 | 1362 | |
955394ce | 1363 | case Http::scSwitchingProtocols: |
62e76326 | 1364 | |
955394ce | 1365 | case Http::scProcessing: |
62e76326 | 1366 | |
955394ce | 1367 | case Http::scNoContent: |
62e76326 | 1368 | |
955394ce | 1369 | case Http::scNotModified: |
4ef4b952 | 1370 | result = true; |
62e76326 | 1371 | break; |
1372 | ||
edce4d98 | 1373 | default: |
4ef4b952 | 1374 | result = false; |
edce4d98 | 1375 | } |
4ef4b952 | 1376 | |
1377 | return result; | |
edce4d98 | 1378 | } |
1379 | ||
a5c8d64d AJ |
1380 | /** |
1381 | * Generate the reply headers sent to client. | |
1382 | * | |
1383 | * Filters out unwanted entries and hop-by-hop from original reply header | |
1384 | * then adds extra entries if we have more info than origin server | |
1385 | * then adds Squid specific entries | |
edce4d98 | 1386 | */ |
0655fa4d | 1387 | void |
1388 | clientReplyContext::buildReplyHeader() | |
edce4d98 | 1389 | { |
7dc5f514 | 1390 | HttpHeader *hdr = &reply->header; |
91369933 | 1391 | const bool is_hit = http->logType.isTcpHit(); |
190154cf | 1392 | HttpRequest *request = http->request; |
edce4d98 | 1393 | #if DONT_FILTER_THESE |
1394 | /* but you might want to if you run Squid as an HTTP accelerator */ | |
a9925b40 | 1395 | /* hdr->delById(HDR_ACCEPT_RANGES); */ |
1396 | hdr->delById(HDR_ETAG); | |
edce4d98 | 1397 | #endif |
62e76326 | 1398 | |
096c9df3 | 1399 | if (is_hit || collapsedRevalidation == crSlave) |
789217a2 | 1400 | hdr->delById(Http::HdrType::SET_COOKIE); |
f89d4012 | 1401 | // TODO: RFC 2965 : Must honour Cache-Control: no-cache="set-cookie2" and remove header. |
62e76326 | 1402 | |
23c6d7e7 | 1403 | // if there is not configured a peer proxy with login=PASS or login=PASSTHRU option enabled |
dcf3665b | 1404 | // remove the Proxy-Authenticate header |
940307b9 | 1405 | if ( !request->peer_login || (strcmp(request->peer_login,"PASS") != 0 && strcmp(request->peer_login,"PASSTHRU") != 0)) { |
1406 | #if USE_ADAPTATION | |
1407 | // but allow adaptation services to authenticate clients | |
1408 | // via request satisfaction | |
1409 | if (!http->requestSatisfactionMode()) | |
1410 | #endif | |
1411 | reply->header.delById(Http::HdrType::PROXY_AUTHENTICATE); | |
1412 | } | |
dcf3665b | 1413 | |
2cdeea82 | 1414 | reply->header.removeHopByHopEntries(); |
4f1c93a7 EB |
1415 | // paranoid: ContentLengthInterpreter has cleaned non-generated replies |
1416 | reply->removeIrrelevantContentLength(); | |
62e76326 | 1417 | |
1418 | // if (request->range) | |
7dc5f514 | 1419 | // clientBuildRangeHeader(http, reply); |
a5c8d64d | 1420 | |
edce4d98 | 1421 | /* |
1422 | * Add a estimated Age header on cache hits. | |
1423 | */ | |
1424 | if (is_hit) { | |
62e76326 | 1425 | /* |
1426 | * Remove any existing Age header sent by upstream caches | |
1427 | * (note that the existing header is passed along unmodified | |
1428 | * on cache misses) | |
1429 | */ | |
789217a2 | 1430 | hdr->delById(Http::HdrType::AGE); |
62e76326 | 1431 | /* |
1432 | * This adds the calculated object age. Note that the details of the | |
1433 | * age calculation is performed by adjusting the timestamp in | |
3900307b | 1434 | * StoreEntry::timestampsSet(), not here. |
62e76326 | 1435 | */ |
bbe58ab5 | 1436 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_SPECIAL)) { |
789217a2 | 1437 | hdr->delById(Http::HdrType::DATE); |
81ab22b6 | 1438 | hdr->putTime(Http::HdrType::DATE, squid_curtime); |
cda7024f | 1439 | } else if (http->getConn() && http->getConn()->port->actAsOrigin) { |
90fa5816 | 1440 | // Swap the Date: header to current time if we are simulating an origin |
789217a2 | 1441 | HttpHeaderEntry *h = hdr->findEntry(Http::HdrType::DATE); |
fd49b08b A |
1442 | if (h) |
1443 | hdr->putExt("X-Origin-Date", h->value.termedBuf()); | |
789217a2 | 1444 | hdr->delById(Http::HdrType::DATE); |
81ab22b6 | 1445 | hdr->putTime(Http::HdrType::DATE, squid_curtime); |
789217a2 | 1446 | h = hdr->findEntry(Http::HdrType::EXPIRES); |
fd49b08b A |
1447 | if (h && http->storeEntry()->expires >= 0) { |
1448 | hdr->putExt("X-Origin-Expires", h->value.termedBuf()); | |
789217a2 | 1449 | hdr->delById(Http::HdrType::EXPIRES); |
81ab22b6 | 1450 | hdr->putTime(Http::HdrType::EXPIRES, squid_curtime + http->storeEntry()->expires - http->storeEntry()->timestamp); |
fd49b08b | 1451 | } |
90fa5816 AJ |
1452 | if (http->storeEntry()->timestamp <= squid_curtime) { |
1453 | // put X-Cache-Age: instead of Age: | |
fd49b08b | 1454 | char age[64]; |
fe3f0034 | 1455 | snprintf(age, sizeof(age), "%" PRId64, static_cast<int64_t>(squid_curtime - http->storeEntry()->timestamp)); |
fd49b08b A |
1456 | hdr->putExt("X-Cache-Age", age); |
1457 | } | |
a81e7089 | 1458 | } else if (http->storeEntry()->timestamp <= squid_curtime) { |
789217a2 | 1459 | hdr->putInt(Http::HdrType::AGE, |
a9925b40 | 1460 | squid_curtime - http->storeEntry()->timestamp); |
62e76326 | 1461 | /* Signal old objects. NB: rfc 2616 is not clear, |
1462 | * by implication, on whether we should do this to all | |
1463 | * responses, or only cache hits. | |
1464 | * 14.46 states it ONLY applys for heuristically caclulated | |
1465 | * freshness values, 13.2.4 doesn't specify the same limitation. | |
1466 | * We interpret RFC 2616 under the combination. | |
1467 | */ | |
1468 | /* TODO: if maxage or s-maxage is present, don't do this */ | |
1469 | ||
b56b37cf AJ |
1470 | if (squid_curtime - http->storeEntry()->timestamp >= 86400) |
1471 | hdr->putWarning(113, "This cache hit is still fresh and more than 1 day old"); | |
62e76326 | 1472 | } |
a5c8d64d | 1473 | } |
528b2c61 | 1474 | |
a5c8d64d AJ |
1475 | /* RFC 2616: Section 14.18 |
1476 | * | |
1477 | * Add a Date: header if missing. | |
1478 | * We have access to a clock therefore are required to amend any shortcoming in servers. | |
1479 | * | |
1480 | * NP: done after Age: to prevent ENTRY_SPECIAL double-handling this header. | |
1481 | */ | |
789217a2 | 1482 | if ( !hdr->has(Http::HdrType::DATE) ) { |
f0dedeb5 | 1483 | if (!http->storeEntry()) |
81ab22b6 | 1484 | hdr->putTime(Http::HdrType::DATE, squid_curtime); |
f0dedeb5 | 1485 | else if (http->storeEntry()->timestamp > 0) |
81ab22b6 | 1486 | hdr->putTime(Http::HdrType::DATE, http->storeEntry()->timestamp); |
f0dedeb5 | 1487 | else { |
d9d98242 | 1488 | debugs(88,DBG_IMPORTANT,"BUG 3279: HTTP reply without Date:"); |
e78ae89a AJ |
1489 | /* dump something useful about the problem */ |
1490 | http->storeEntry()->dump(DBG_IMPORTANT); | |
f0dedeb5 | 1491 | } |
edce4d98 | 1492 | } |
62e76326 | 1493 | |
bcfba8bd | 1494 | // add Warnings required by RFC 2616 if serving a stale hit |
91369933 | 1495 | if (http->request->flags.staleIfHit && http->logType.isTcpHit()) { |
bcfba8bd | 1496 | hdr->putWarning(110, "Response is stale"); |
450fe1cb | 1497 | if (http->request->flags.needValidation) |
bcfba8bd AR |
1498 | hdr->putWarning(111, "Revalidation failed"); |
1499 | } | |
1500 | ||
0bd9aa82 | 1501 | /* Filter unproxyable authentication types */ |
91369933 | 1502 | if (http->logType.oldType != LOG_TCP_DENIED && |
789217a2 | 1503 | hdr->has(Http::HdrType::WWW_AUTHENTICATE)) { |
62e76326 | 1504 | HttpHeaderPos pos = HttpHeaderInitPos; |
1505 | HttpHeaderEntry *e; | |
1506 | ||
26ac0430 | 1507 | int connection_auth_blocked = 0; |
a9925b40 | 1508 | while ((e = hdr->getEntry(&pos))) { |
789217a2 | 1509 | if (e->id == Http::HdrType::WWW_AUTHENTICATE) { |
5b4117d8 | 1510 | const char *value = e->value.rawBuf(); |
62e76326 | 1511 | |
1512 | if ((strncasecmp(value, "NTLM", 4) == 0 && | |
1513 | (value[4] == '\0' || value[4] == ' ')) | |
1514 | || | |
1515 | (strncasecmp(value, "Negotiate", 9) == 0 && | |
d67acb4e | 1516 | (value[9] == '\0' || value[9] == ' ')) |
26ac0430 AJ |
1517 | || |
1518 | (strncasecmp(value, "Kerberos", 8) == 0 && | |
1519 | (value[8] == '\0' || value[8] == ' '))) { | |
450fe1cb | 1520 | if (request->flags.connectionAuthDisabled) { |
26ac0430 | 1521 | hdr->delAt(pos, connection_auth_blocked); |
d67acb4e AJ |
1522 | continue; |
1523 | } | |
e857372a | 1524 | request->flags.mustKeepalive = true; |
45e5102d | 1525 | if (!request->flags.accelerated && !request->flags.intercepted) { |
789217a2 | 1526 | httpHeaderPutStrf(hdr, Http::HdrType::PROXY_SUPPORT, "Session-Based-Authentication"); |
26ac0430 | 1527 | /* |
f7a2e5a5 | 1528 | We send "Connection: Proxy-Support" header to mark |
26ac0430 AJ |
1529 | Proxy-Support as a hop-by-hop header for intermediaries that do not |
1530 | understand the semantics of this header. The RFC should have included | |
1531 | this recommendation. | |
1532 | */ | |
789217a2 | 1533 | httpHeaderPutStrf(hdr, Http::HdrType::CONNECTION, "Proxy-support"); |
d67acb4e AJ |
1534 | } |
1535 | break; | |
26ac0430 | 1536 | } |
62e76326 | 1537 | } |
1538 | } | |
d67acb4e AJ |
1539 | |
1540 | if (connection_auth_blocked) | |
ba9fb01d | 1541 | hdr->refreshMask(); |
0bd9aa82 | 1542 | } |
62e76326 | 1543 | |
2f1431ea | 1544 | #if USE_AUTH |
edce4d98 | 1545 | /* Handle authentication headers */ |
91369933 | 1546 | if (http->logType.oldType == LOG_TCP_DENIED && |
9b769c67 AJ |
1547 | ( reply->sline.status() == Http::scProxyAuthenticationRequired || |
1548 | reply->sline.status() == Http::scUnauthorized) | |
26ac0430 AJ |
1549 | ) { |
1550 | /* Add authentication header */ | |
1551 | /*! \todo alter errorstate to be accel on|off aware. The 0 on the next line | |
1552 | * depends on authenticate behaviour: all schemes to date send no extra | |
1553 | * data on 407/401 responses, and do not check the accel state on 401/407 | |
1554 | * responses | |
1555 | */ | |
923a8d89 | 1556 | Auth::UserRequest::AddReplyAuthHeader(reply, request->auth_user_request, request, 0, 1); |
a33a428a | 1557 | } else if (request->auth_user_request != NULL) |
923a8d89 | 1558 | Auth::UserRequest::AddReplyAuthHeader(reply, request->auth_user_request, request, http->flags.accel, 0); |
2f1431ea | 1559 | #endif |
62e76326 | 1560 | |
edce4d98 | 1561 | /* Append X-Cache */ |
789217a2 | 1562 | httpHeaderPutStrf(hdr, Http::HdrType::X_CACHE, "%s from %s", |
62e76326 | 1563 | is_hit ? "HIT" : "MISS", getMyHostname()); |
1564 | ||
edce4d98 | 1565 | #if USE_CACHE_DIGESTS |
1566 | /* Append X-Cache-Lookup: -- temporary hack, to be removed @?@ @?@ */ | |
789217a2 | 1567 | httpHeaderPutStrf(hdr, Http::HdrType::X_CACHE_LOOKUP, "%s from %s:%d", |
0655fa4d | 1568 | lookup_type ? lookup_type : "NONE", |
62e76326 | 1569 | getMyHostname(), getMyPort()); |
1570 | ||
edce4d98 | 1571 | #endif |
62e76326 | 1572 | |
45e5102d | 1573 | const bool maySendChunkedReply = !request->multipartRangeRequest() && |
f7701e72 | 1574 | reply->sline.protocol == AnyP::PROTO_HTTP && // response is HTTP |
2592bc70 | 1575 | (request->http_ver >= Http::ProtocolVersion(1,1)); |
4ad60609 | 1576 | |
f529bb20 | 1577 | /* Check whether we should send keep-alive */ |
9b769c67 | 1578 | if (!Config.onoff.error_pconns && reply->sline.status() >= 400 && !request->flags.mustKeepalive) { |
bf8fe701 | 1579 | debugs(33, 3, "clientBuildReplyHeader: Error, don't keep-alive"); |
e857372a | 1580 | request->flags.proxyKeepalive = false; |
450fe1cb | 1581 | } else if (!Config.onoff.client_pconns && !request->flags.mustKeepalive) { |
17b57873 | 1582 | debugs(33, 2, "clientBuildReplyHeader: Connection Keep-Alive not requested by admin or client"); |
e857372a | 1583 | request->flags.proxyKeepalive = false; |
450fe1cb | 1584 | } else if (request->flags.proxyKeepalive && shutting_down) { |
f529bb20 | 1585 | debugs(88, 3, "clientBuildReplyHeader: Shutting down, don't keep-alive."); |
e857372a | 1586 | request->flags.proxyKeepalive = false; |
450fe1cb | 1587 | } else if (request->flags.connectionAuth && !reply->keep_alive) { |
26ac0430 | 1588 | debugs(33, 2, "clientBuildReplyHeader: Connection oriented auth but server side non-persistent"); |
e857372a | 1589 | request->flags.proxyKeepalive = false; |
4ad60609 | 1590 | } else if (reply->bodySize(request->method) < 0 && !maySendChunkedReply) { |
17b57873 | 1591 | debugs(88, 3, "clientBuildReplyHeader: can't keep-alive, unknown body size" ); |
e857372a | 1592 | request->flags.proxyKeepalive = false; |
450fe1cb | 1593 | } else if (fdUsageHigh()&& !request->flags.mustKeepalive) { |
17b57873 | 1594 | debugs(88, 3, "clientBuildReplyHeader: Not many unused FDs, can't keep-alive"); |
e857372a | 1595 | request->flags.proxyKeepalive = false; |
450fe1cb | 1596 | } else if (request->flags.sslBumped && !reply->persistent()) { |
49f1c7f7 AR |
1597 | // We do not really have to close, but we pretend we are a tunnel. |
1598 | debugs(88, 3, "clientBuildReplyHeader: bumped reply forces close"); | |
e857372a | 1599 | request->flags.proxyKeepalive = false; |
693cb033 CT |
1600 | } else if (request->pinnedConnection() && !reply->persistent()) { |
1601 | // The peer wants to close the pinned connection | |
1602 | debugs(88, 3, "pinned reply forces close"); | |
e857372a | 1603 | request->flags.proxyKeepalive = false; |
c5c06f02 CT |
1604 | } else if (http->getConn()) { |
1605 | ConnStateData * conn = http->getConn(); | |
cda7024f | 1606 | if (!Comm::IsConnOpen(conn->port->listenConn)) { |
c5c06f02 CT |
1607 | // The listening port closed because of a reconfigure |
1608 | debugs(88, 3, "listening port closed"); | |
1609 | request->flags.proxyKeepalive = false; | |
c5c06f02 | 1610 | } |
17b57873 | 1611 | } |
d67acb4e | 1612 | |
4ad60609 | 1613 | // Decide if we send chunked reply |
95172eea | 1614 | if (maySendChunkedReply && reply->bodySize(request->method) < 0) { |
4ad60609 | 1615 | debugs(88, 3, "clientBuildReplyHeader: chunked reply"); |
e857372a | 1616 | request->flags.chunkedReply = true; |
789217a2 | 1617 | hdr->putStr(Http::HdrType::TRANSFER_ENCODING, "chunked"); |
4ad60609 | 1618 | } |
f529bb20 | 1619 | |
90be6ff5 EB |
1620 | hdr->addVia(reply->sline.version); |
1621 | ||
95e78500 | 1622 | /* Signal keep-alive or close explicitly */ |
789217a2 | 1623 | hdr->putStr(Http::HdrType::CONNECTION, request->flags.proxyKeepalive ? "keep-alive" : "close"); |
62e76326 | 1624 | |
edce4d98 | 1625 | #if ADD_X_REQUEST_URI |
1626 | /* | |
1627 | * Knowing the URI of the request is useful when debugging persistent | |
1628 | * connections in a client; we cannot guarantee the order of http headers, | |
1629 | * but X-Request-URI is likely to be the very last header to ease use from a | |
1630 | * debugger [hdr->entries.count-1]. | |
1631 | */ | |
789217a2 | 1632 | hdr->putStr(Http::HdrType::X_REQUEST_URI, |
a9925b40 | 1633 | http->memOjbect()->url ? http->memObject()->url : http->uri); |
62e76326 | 1634 | |
edce4d98 | 1635 | #endif |
62e76326 | 1636 | |
45cca89d | 1637 | /* Surrogate-Control requires Surrogate-Capability from upstream to pass on */ |
789217a2 FC |
1638 | if ( hdr->has(Http::HdrType::SURROGATE_CONTROL) ) { |
1639 | if (!request->header.has(Http::HdrType::SURROGATE_CAPABILITY)) { | |
1640 | hdr->delById(Http::HdrType::SURROGATE_CONTROL); | |
45cca89d AJ |
1641 | } |
1642 | /* TODO: else case: drop any controls intended specifically for our surrogate ID */ | |
1643 | } | |
1644 | ||
cde8f31b | 1645 | httpHdrMangleList(hdr, request, http->al, ROR_REPLY); |
edce4d98 | 1646 | } |
1647 | ||
0655fa4d | 1648 | void |
b297bcd0 | 1649 | clientReplyContext::cloneReply() |
edce4d98 | 1650 | { |
7dc5f514 | 1651 | assert(reply == NULL); |
0655fa4d | 1652 | |
66d51f4f | 1653 | reply = http->storeEntry()->mem().freshestReply().clone(); |
b248c2a3 | 1654 | HTTPMSGLOCK(reply); |
7dc5f514 | 1655 | |
49f57088 EB |
1656 | http->al->reply = reply; |
1657 | ||
0c3d3f65 | 1658 | if (reply->sline.protocol == AnyP::PROTO_HTTP) { |
2592bc70 AJ |
1659 | /* RFC 2616 requires us to advertise our version (but only on real HTTP traffic) */ |
1660 | reply->sline.version = Http::ProtocolVersion(); | |
e77d7ef0 | 1661 | } |
0655fa4d | 1662 | |
1663 | /* do header conversions */ | |
1664 | buildReplyHeader(); | |
edce4d98 | 1665 | } |
1666 | ||
7681a3b9 AR |
1667 | /// Safely disposes of an entry pointing to a cache hit that we do not want. |
1668 | /// We cannot just ignore the entry because it may be locking or otherwise | |
1669 | /// holding an associated cache resource of some sort. | |
1670 | void | |
1671 | clientReplyContext::forgetHit() | |
1672 | { | |
1673 | StoreEntry *e = http->storeEntry(); | |
1674 | assert(e); // or we are not dealing with a hit | |
1675 | // We probably have not locked the entry earlier, unfortunately. We lock it | |
1676 | // now so that we can unlock two lines later (and trigger cleanup). | |
1677 | // Ideally, ClientHttpRequest::storeEntry() should lock/unlock, but it is | |
1678 | // used so inconsistently that simply adding locking there leads to bugs. | |
1bfe9ade | 1679 | e->lock("clientReplyContext::forgetHit"); |
7681a3b9 | 1680 | http->storeEntry(NULL); |
1bfe9ade | 1681 | e->unlock("clientReplyContext::forgetHit"); // may delete e |
7681a3b9 AR |
1682 | } |
1683 | ||
e6ccf245 | 1684 | void |
1685 | clientReplyContext::identifyStoreObject() | |
edce4d98 | 1686 | { |
190154cf | 1687 | HttpRequest *r = http->request; |
62e76326 | 1688 | |
f8acd68f GD |
1689 | // client sent CC:no-cache or some other condition has been |
1690 | // encountered which prevents delivering a public/cached object. | |
1691 | if (!r->flags.noCache || r->flags.internal) { | |
62e76326 | 1692 | lookingforstore = 5; |
1693 | StoreEntry::getPublicByRequest (this, r); | |
559da936 | 1694 | } else { |
69565793 | 1695 | identifyFoundObject(nullptr); |
559da936 | 1696 | } |
e6ccf245 | 1697 | } |
1698 | ||
7d5f62a4 AJ |
1699 | /** |
1700 | * Check state of the current StoreEntry object. | |
1701 | * to see if we can determine the final status of the request. | |
1702 | */ | |
e6ccf245 | 1703 | void |
1704 | clientReplyContext::identifyFoundObject(StoreEntry *newEntry) | |
1705 | { | |
190154cf | 1706 | HttpRequest *r = http->request; |
69565793 EB |
1707 | http->storeEntry(newEntry); |
1708 | const auto e = http->storeEntry(); | |
a12a049a | 1709 | |
7d5f62a4 | 1710 | /* Release IP-cache entries on reload */ |
d85b8894 | 1711 | /** \li If the request has no-cache flag set or some no_cache HACK in operation we |
7d5f62a4 AJ |
1712 | * 'invalidate' the cached IP entries for this request ??? |
1713 | */ | |
17852883 | 1714 | if (r->flags.noCache || r->flags.noCacheHack()) |
5c51bffb | 1715 | ipcacheInvalidateNegative(r->url.host()); |
45e5102d | 1716 | |
edce4d98 | 1717 | #if USE_CACHE_DIGESTS |
69565793 | 1718 | lookup_type = e ? "HIT" : "MISS"; |
edce4d98 | 1719 | #endif |
62e76326 | 1720 | |
69565793 | 1721 | if (!e) { |
d85b8894 | 1722 | /** \li If no StoreEntry object is current assume this object isn't in the cache set MISS*/ |
e4d13993 | 1723 | debugs(85, 3, "StoreEntry is NULL - MISS"); |
d2a6dcba | 1724 | http->logType.update(LOG_TCP_MISS); |
62e76326 | 1725 | doGetMoreData(); |
1726 | return; | |
edce4d98 | 1727 | } |
62e76326 | 1728 | |
edce4d98 | 1729 | if (Config.onoff.offline) { |
d85b8894 | 1730 | /** \li If we are running in offline mode set to HIT */ |
e4d13993 | 1731 | debugs(85, 3, "offline HIT " << *e); |
d2a6dcba | 1732 | http->logType.update(LOG_TCP_HIT); |
62e76326 | 1733 | doGetMoreData(); |
1734 | return; | |
edce4d98 | 1735 | } |
62e76326 | 1736 | |
edce4d98 | 1737 | if (http->redirect.status) { |
d85b8894 | 1738 | /** \li If redirection status is True force this to be a MISS */ |
539283df | 1739 | debugs(85, 3, "REDIRECT status forced StoreEntry to NULL (no body on 3XX responses) " << *e); |
7681a3b9 | 1740 | forgetHit(); |
d2a6dcba | 1741 | http->logType.update(LOG_TCP_REDIRECT); |
62e76326 | 1742 | doGetMoreData(); |
1743 | return; | |
edce4d98 | 1744 | } |
62e76326 | 1745 | |
3900307b | 1746 | if (!e->validToSend()) { |
e4d13993 | 1747 | debugs(85, 3, "!storeEntryValidToSend MISS " << *e); |
7681a3b9 | 1748 | forgetHit(); |
d2a6dcba | 1749 | http->logType.update(LOG_TCP_MISS); |
62e76326 | 1750 | doGetMoreData(); |
1751 | return; | |
edce4d98 | 1752 | } |
62e76326 | 1753 | |
edce4d98 | 1754 | if (EBIT_TEST(e->flags, ENTRY_SPECIAL)) { |
d85b8894 | 1755 | /* \li Special entries are always hits, no matter what the client says */ |
e4d13993 | 1756 | debugs(85, 3, "ENTRY_SPECIAL HIT " << *e); |
d2a6dcba | 1757 | http->logType.update(LOG_TCP_HIT); |
62e76326 | 1758 | doGetMoreData(); |
1759 | return; | |
edce4d98 | 1760 | } |
62e76326 | 1761 | |
450fe1cb | 1762 | if (r->flags.noCache) { |
e4d13993 | 1763 | debugs(85, 3, "no-cache REFRESH MISS " << *e); |
7681a3b9 | 1764 | forgetHit(); |
d2a6dcba | 1765 | http->logType.update(LOG_TCP_CLIENT_REFRESH_MISS); |
62e76326 | 1766 | doGetMoreData(); |
1767 | return; | |
edce4d98 | 1768 | } |
62e76326 | 1769 | |
d2a6dcba | 1770 | if (e->hittingRequiresCollapsing() && !startCollapsingOn(*e, false)) { |
819be284 EB |
1771 | debugs(85, 3, "prohibited CF MISS " << *e); |
1772 | forgetHit(); | |
d2a6dcba | 1773 | http->logType.update(LOG_TCP_MISS); |
819be284 EB |
1774 | doGetMoreData(); |
1775 | return; | |
1776 | } | |
1777 | ||
e4d13993 | 1778 | debugs(85, 3, "default HIT " << *e); |
d2a6dcba | 1779 | http->logType.update(LOG_TCP_HIT); |
e6ccf245 | 1780 | doGetMoreData(); |
edce4d98 | 1781 | } |
1782 | ||
d85b8894 AJ |
1783 | /** |
1784 | * Request more data from the store for the client Stream | |
edce4d98 | 1785 | * This is *the* entry point to this module. |
1786 | * | |
1787 | * Preconditions: | |
d85b8894 AJ |
1788 | * - This is the head of the list. |
1789 | * - There is at least one more node. | |
1790 | * - Data context is not null | |
edce4d98 | 1791 | */ |
1792 | void | |
59a1efb2 | 1793 | clientGetMoreData(clientStreamNode * aNode, ClientHttpRequest * http) |
edce4d98 | 1794 | { |
edce4d98 | 1795 | /* Test preconditions */ |
e6ccf245 | 1796 | assert(aNode != NULL); |
1797 | assert(cbdataReferenceValid(aNode)); | |
e6ccf245 | 1798 | assert(aNode->node.prev == NULL); |
1799 | assert(aNode->node.next != NULL); | |
0655fa4d | 1800 | clientReplyContext *context = dynamic_cast<clientReplyContext *>(aNode->data.getRaw()); |
1801 | assert (context); | |
edce4d98 | 1802 | assert(context->http == http); |
1803 | ||
0655fa4d | 1804 | clientStreamNode *next = ( clientStreamNode *)aNode->node.next->data; |
62e76326 | 1805 | |
edce4d98 | 1806 | if (!context->ourNode) |
62e76326 | 1807 | context->ourNode = aNode; |
1808 | ||
e6ccf245 | 1809 | /* no cbdatareference, this is only used once, and safely */ |
edce4d98 | 1810 | if (context->flags.storelogiccomplete) { |
62e76326 | 1811 | StoreIOBuffer tempBuffer; |
1812 | tempBuffer.offset = next->readBuffer.offset + context->headers_sz; | |
1813 | tempBuffer.length = next->readBuffer.length; | |
1814 | tempBuffer.data = next->readBuffer.data; | |
1815 | ||
86a2f789 | 1816 | storeClientCopy(context->sc, http->storeEntry(), |
0655fa4d | 1817 | tempBuffer, clientReplyContext::SendMoreData, context); |
62e76326 | 1818 | return; |
edce4d98 | 1819 | } |
62e76326 | 1820 | |
c2a7cefd | 1821 | if (context->http->request->method == Http::METHOD_PURGE) { |
62e76326 | 1822 | context->purgeRequest(); |
1823 | return; | |
edce4d98 | 1824 | } |
62e76326 | 1825 | |
e18b8316 | 1826 | // OPTIONS with Max-Forwards:0 handled in clientProcessRequest() |
fc90edc3 | 1827 | |
c2a7cefd | 1828 | if (context->http->request->method == Http::METHOD_TRACE) { |
789217a2 | 1829 | if (context->http->request->header.getInt64(Http::HdrType::MAX_FORWARDS) == 0) { |
0655fa4d | 1830 | context->traceReply(aNode); |
62e76326 | 1831 | return; |
1832 | } | |
1833 | ||
1834 | /* continue forwarding, not finished yet. */ | |
d2a6dcba | 1835 | http->logType.update(LOG_TCP_MISS); |
62e76326 | 1836 | |
1837 | context->doGetMoreData(); | |
edce4d98 | 1838 | } else |
62e76326 | 1839 | context->identifyStoreObject(); |
e6ccf245 | 1840 | } |
1841 | ||
1842 | void | |
1843 | clientReplyContext::doGetMoreData() | |
1844 | { | |
edce4d98 | 1845 | /* We still have to do store logic processing - vary, cache hit etc */ |
86a2f789 | 1846 | if (http->storeEntry() != NULL) { |
62e76326 | 1847 | /* someone found the object in the cache for us */ |
8bcf08e0 | 1848 | StoreIOBuffer localTempBuffer; |
34266cde | 1849 | |
1bfe9ade | 1850 | http->storeEntry()->lock("clientReplyContext::doGetMoreData"); |
62e76326 | 1851 | |
76d61119 | 1852 | http->storeEntry()->ensureMemObject(storeId(), http->log_uri, http->request->method); |
62e76326 | 1853 | |
86a2f789 | 1854 | sc = storeClientListAdd(http->storeEntry(), this); |
9a0a18de | 1855 | #if USE_DELAY_POOLS |
62e76326 | 1856 | sc->setDelayId(DelayId::DelayClient(http)); |
edce4d98 | 1857 | #endif |
62e76326 | 1858 | |
91369933 | 1859 | assert(http->logType.oldType == LOG_TCP_HIT); |
62e76326 | 1860 | reqofs = 0; |
1861 | /* guarantee nothing has been sent yet! */ | |
1862 | assert(http->out.size == 0); | |
1863 | assert(http->out.offset == 0); | |
425de4c8 | 1864 | |
6b4edefb CT |
1865 | if (ConnStateData *conn = http->getConn()) { |
1866 | if (Ip::Qos::TheConfig.isHitTosActive()) { | |
1867 | Ip::Qos::doTosLocalHit(conn->clientConnection); | |
1868 | } | |
425de4c8 | 1869 | |
6b4edefb CT |
1870 | if (Ip::Qos::TheConfig.isHitNfmarkActive()) { |
1871 | Ip::Qos::doNfmarkLocalHit(conn->clientConnection); | |
1872 | } | |
b86ab75b | 1873 | } |
425de4c8 | 1874 | |
8bcf08e0 FC |
1875 | localTempBuffer.offset = reqofs; |
1876 | localTempBuffer.length = getNextNode()->readBuffer.length; | |
1877 | localTempBuffer.data = getNextNode()->readBuffer.data; | |
1878 | storeClientCopy(sc, http->storeEntry(), localTempBuffer, CacheHit, this); | |
edce4d98 | 1879 | } else { |
62e76326 | 1880 | /* MISS CASE, http->logType is already set! */ |
0655fa4d | 1881 | processMiss(); |
edce4d98 | 1882 | } |
1883 | } | |
1884 | ||
d85b8894 | 1885 | /** The next node has removed itself from the stream. */ |
edce4d98 | 1886 | void |
59a1efb2 | 1887 | clientReplyDetach(clientStreamNode * node, ClientHttpRequest * http) |
edce4d98 | 1888 | { |
d85b8894 | 1889 | /** detach from the stream */ |
edce4d98 | 1890 | clientStreamDetach(node, http); |
1891 | } | |
1892 | ||
d85b8894 AJ |
1893 | /** |
1894 | * Accepts chunk of a http message in buf, parses prefix, filters headers and | |
edce4d98 | 1895 | * such, writes processed message to the message recipient |
1896 | */ | |
1897 | void | |
0655fa4d | 1898 | clientReplyContext::SendMoreData(void *data, StoreIOBuffer result) |
edce4d98 | 1899 | { |
e6ccf245 | 1900 | clientReplyContext *context = static_cast<clientReplyContext *>(data); |
528b2c61 | 1901 | context->sendMoreData (result); |
1902 | } | |
1903 | ||
1904 | void | |
1905 | clientReplyContext::makeThisHead() | |
1906 | { | |
1907 | /* At least, I think thats what this does */ | |
1908 | dlinkDelete(&http->active, &ClientActiveRequests); | |
1909 | dlinkAdd(http, &http->active, &ClientActiveRequests); | |
1910 | } | |
1911 | ||
1912 | bool | |
1913 | clientReplyContext::errorInStream(StoreIOBuffer const &result, size_t const &sizeToProcess)const | |
1914 | { | |
1915 | return /* aborted request */ | |
86a2f789 | 1916 | (http->storeEntry() && EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) || |
62e76326 | 1917 | /* Upstream read error */ (result.flags.error) || |
1918 | /* Upstream EOF */ (sizeToProcess == 0); | |
528b2c61 | 1919 | } |
1920 | ||
1921 | void | |
1922 | clientReplyContext::sendStreamError(StoreIOBuffer const &result) | |
1923 | { | |
d85b8894 | 1924 | /** call clientWriteComplete so the client socket gets closed |
af6a12ee | 1925 | * |
d85b8894 | 1926 | * We call into the stream, because we don't know that there is a |
528b2c61 | 1927 | * client socket! |
1928 | */ | |
61beade2 | 1929 | debugs(88, 5, "A stream error has occurred, marking as complete and sending no data."); |
8bcf08e0 | 1930 | StoreIOBuffer localTempBuffer; |
528b2c61 | 1931 | flags.complete = 1; |
e857372a | 1932 | http->request->flags.streamError = true; |
8bcf08e0 | 1933 | localTempBuffer.flags.error = result.flags.error; |
528b2c61 | 1934 | clientStreamCallback((clientStreamNode*)http->client_stream.head->data, http, NULL, |
8bcf08e0 | 1935 | localTempBuffer); |
528b2c61 | 1936 | } |
1937 | ||
1938 | void | |
1939 | clientReplyContext::pushStreamData(StoreIOBuffer const &result, char *source) | |
1940 | { | |
8bcf08e0 | 1941 | StoreIOBuffer localTempBuffer; |
62e76326 | 1942 | |
528b2c61 | 1943 | if (result.length == 0) { |
bf8fe701 | 1944 | debugs(88, 5, "clientReplyContext::pushStreamData: marking request as complete due to 0 length store result"); |
62e76326 | 1945 | flags.complete = 1; |
528b2c61 | 1946 | } |
62e76326 | 1947 | |
43ae1d95 | 1948 | assert(result.offset - headers_sz == next()->readBuffer.offset); |
8bcf08e0 FC |
1949 | localTempBuffer.offset = result.offset - headers_sz; |
1950 | localTempBuffer.length = result.length; | |
62e76326 | 1951 | |
8bcf08e0 FC |
1952 | if (localTempBuffer.length) |
1953 | localTempBuffer.data = source; | |
62e76326 | 1954 | |
528b2c61 | 1955 | clientStreamCallback((clientStreamNode*)http->client_stream.head->data, http, NULL, |
8bcf08e0 | 1956 | localTempBuffer); |
528b2c61 | 1957 | } |
1958 | ||
1959 | clientStreamNode * | |
1960 | clientReplyContext::next() const | |
1961 | { | |
1962 | assert ( (clientStreamNode*)http->client_stream.head->next->data == getNextNode()); | |
1963 | return getNextNode(); | |
1964 | } | |
1965 | ||
b51aec66 | 1966 | void |
16611143 | 1967 | clientReplyContext::sendBodyTooLargeError() |
b51aec66 | 1968 | { |
b7ac5457 | 1969 | Ip::Address tmp_noaddr; |
4dd643d5 | 1970 | tmp_noaddr.setNoAddr(); // TODO: make a global const |
d2a6dcba | 1971 | http->logType.update(LOG_TCP_DENIED_REPLY); |
955394ce | 1972 | ErrorState *err = clientBuildError(ERR_TOO_BIG, Http::scForbidden, NULL, |
73c36fd9 | 1973 | http->getConn() != NULL ? http->getConn()->clientConnection->remote : tmp_noaddr, |
7e6eabbc | 1974 | http->request, http->al); |
16611143 | 1975 | removeClientStoreReference(&(sc), http); |
1976 | HTTPMSGUNLOCK(reply); | |
1977 | startError(err); | |
26ac0430 | 1978 | |
b51aec66 | 1979 | } |
1980 | ||
79c8035e AR |
1981 | /// send 412 (Precondition Failed) to client |
1982 | void | |
1983 | clientReplyContext::sendPreconditionFailedError() | |
1984 | { | |
d2a6dcba | 1985 | http->logType.update(LOG_TCP_HIT); |
6b4edefb CT |
1986 | Ip::Address tmp_noaddr; |
1987 | tmp_noaddr.setNoAddr(); | |
79c8035e | 1988 | ErrorState *const err = |
955394ce | 1989 | clientBuildError(ERR_PRECONDITION_FAILED, Http::scPreconditionFailed, |
7e6eabbc | 1990 | NULL, http->getConn() ? http->getConn()->clientConnection->remote : tmp_noaddr, http->request, http->al); |
79c8035e AR |
1991 | removeClientStoreReference(&sc, http); |
1992 | HTTPMSGUNLOCK(reply); | |
1993 | startError(err); | |
1994 | } | |
1995 | ||
a2bd457d AJ |
1996 | /// send 304 (Not Modified) to client |
1997 | void | |
1998 | clientReplyContext::sendNotModified() | |
1999 | { | |
2000 | StoreEntry *e = http->storeEntry(); | |
2001 | const time_t timestamp = e->timestamp; | |
66d51f4f | 2002 | const auto temprep = e->mem().freshestReply().make304(); |
787ea68c GD |
2003 | // log as TCP_INM_HIT if code 304 generated for |
2004 | // If-None-Match request | |
2005 | if (!http->request->flags.ims) | |
d2a6dcba | 2006 | http->logType.update(LOG_TCP_INM_HIT); |
787ea68c | 2007 | else |
d2a6dcba | 2008 | http->logType.update(LOG_TCP_IMS_HIT); |
a2bd457d | 2009 | removeClientStoreReference(&sc, http); |
f206b652 | 2010 | createStoreEntry(http->request->method, RequestFlags()); |
a2bd457d AJ |
2011 | e = http->storeEntry(); |
2012 | // Copy timestamp from the original entry so the 304 | |
2013 | // reply has a meaningful Age: header. | |
90fa5816 | 2014 | e->timestampsSet(); |
a2bd457d AJ |
2015 | e->timestamp = timestamp; |
2016 | e->replaceHttpReply(temprep); | |
2017 | e->complete(); | |
2018 | /* | |
2019 | * TODO: why put this in the store and then serialise it and | |
2020 | * then parse it again. Simply mark the request complete in | |
2021 | * our context and write the reply struct to the client side. | |
2022 | */ | |
2023 | triggerInitialStoreRead(); | |
2024 | } | |
2025 | ||
2026 | /// send 304 (Not Modified) or 412 (Precondition Failed) to client | |
2027 | /// depending on request method | |
2028 | void | |
2029 | clientReplyContext::sendNotModifiedOrPreconditionFailedError() | |
2030 | { | |
c2a7cefd AJ |
2031 | if (http->request->method == Http::METHOD_GET || |
2032 | http->request->method == Http::METHOD_HEAD) | |
a2bd457d AJ |
2033 | sendNotModified(); |
2034 | else | |
2035 | sendPreconditionFailedError(); | |
2036 | } | |
2037 | ||
4993f571 | 2038 | void |
2039 | clientReplyContext::processReplyAccess () | |
2040 | { | |
b50e327b | 2041 | /* NP: this should probably soft-fail to a zero-sized-reply error ?? */ |
7dc5f514 | 2042 | assert(reply); |
b50e327b AJ |
2043 | |
2044 | /** Don't block our own responses or HTTP status messages */ | |
91369933 AJ |
2045 | if (http->logType.oldType == LOG_TCP_DENIED || |
2046 | http->logType.oldType == LOG_TCP_DENIED_REPLY || | |
9b769c67 | 2047 | alwaysAllowResponse(reply->sline.status())) { |
acbf9428 | 2048 | headers_sz = reply->hdr_sz; |
2efeb0b7 | 2049 | processReplyAccessResult(ACCESS_ALLOWED); |
26ac0430 | 2050 | return; |
230a8cc6 | 2051 | } |
26ac0430 | 2052 | |
b50e327b | 2053 | /** Check for reply to big error */ |
16611143 | 2054 | if (reply->expectedBodyTooLarge(*http->request)) { |
2055 | sendBodyTooLargeError(); | |
62e76326 | 2056 | return; |
2057 | } | |
2058 | ||
7dc5f514 | 2059 | headers_sz = reply->hdr_sz; |
230a8cc6 | 2060 | |
b50e327b | 2061 | /** check for absent access controls (permit by default) */ |
230a8cc6 | 2062 | if (!Config.accessList.reply) { |
2efeb0b7 | 2063 | processReplyAccessResult(ACCESS_ALLOWED); |
26ac0430 | 2064 | return; |
230a8cc6 | 2065 | } |
2066 | ||
b50e327b | 2067 | /** Process http_reply_access lists */ |
127dce76 AR |
2068 | ACLFilledChecklist *replyChecklist = |
2069 | clientAclChecklistCreate(Config.accessList.reply, http); | |
b248c2a3 AJ |
2070 | replyChecklist->reply = reply; |
2071 | HTTPMSGLOCK(replyChecklist->reply); | |
0655fa4d | 2072 | replyChecklist->nonBlockingCheck(ProcessReplyAccessResult, this); |
4993f571 | 2073 | } |
2074 | ||
2075 | void | |
329c128c | 2076 | clientReplyContext::ProcessReplyAccessResult(Acl::Answer rv, void *voidMe) |
4993f571 | 2077 | { |
2078 | clientReplyContext *me = static_cast<clientReplyContext *>(voidMe); | |
0655fa4d | 2079 | me->processReplyAccessResult(rv); |
4993f571 | 2080 | } |
2081 | ||
2082 | void | |
329c128c | 2083 | clientReplyContext::processReplyAccessResult(const Acl::Answer &accessAllowed) |
4993f571 | 2084 | { |
7f06a3d8 AJ |
2085 | debugs(88, 2, "The reply for " << http->request->method |
2086 | << ' ' << http->uri << " is " << accessAllowed << ", because it matched " | |
2087 | << (AclMatchedName ? AclMatchedName : "NO ACL's")); | |
62e76326 | 2088 | |
06bf5384 | 2089 | if (!accessAllowed.allowed()) { |
62e76326 | 2090 | ErrorState *err; |
0185bd6f | 2091 | err_type page_id; |
9ce7856a | 2092 | page_id = aclGetDenyInfoPage(&Config.denyInfoList, AclMatchedName, 1); |
0185bd6f | 2093 | |
d2a6dcba | 2094 | http->logType.update(LOG_TCP_DENIED_REPLY); |
c466369c | 2095 | |
0185bd6f | 2096 | if (page_id == ERR_NONE) |
2097 | page_id = ERR_ACCESS_DENIED; | |
2098 | ||
b7ac5457 | 2099 | Ip::Address tmp_noaddr; |
4dd643d5 | 2100 | tmp_noaddr.setNoAddr(); |
955394ce | 2101 | err = clientBuildError(page_id, Http::scForbidden, NULL, |
73c36fd9 | 2102 | http->getConn() != NULL ? http->getConn()->clientConnection->remote : tmp_noaddr, |
7e6eabbc | 2103 | http->request, http->al); |
0185bd6f | 2104 | |
86a2f789 | 2105 | removeClientStoreReference(&sc, http); |
0185bd6f | 2106 | |
7dc5f514 | 2107 | HTTPMSGUNLOCK(reply); |
0185bd6f | 2108 | |
3c2c1d31 | 2109 | startError(err); |
2110 | ||
62e76326 | 2111 | return; |
2112 | } | |
2113 | ||
0976f8db | 2114 | /* Ok, the reply is allowed, */ |
2115 | http->loggingEntry(http->storeEntry()); | |
2116 | ||
7dc5f514 | 2117 | ssize_t body_size = reqofs - reply->hdr_sz; |
b297bcd0 | 2118 | if (body_size < 0) { |
26ac0430 AJ |
2119 | reqofs = reply->hdr_sz; |
2120 | body_size = 0; | |
b297bcd0 | 2121 | } |
0976f8db | 2122 | |
bf8fe701 | 2123 | debugs(88, 3, "clientReplyContext::sendMoreData: Appending " << |
2124 | (int) body_size << " bytes after " << reply->hdr_sz << | |
2125 | " bytes of headers"); | |
0976f8db | 2126 | |
f41735ea | 2127 | #if USE_SQUID_ESI |
62e76326 | 2128 | |
9b769c67 AJ |
2129 | if (http->flags.accel && reply->sline.status() != Http::scForbidden && |
2130 | !alwaysAllowResponse(reply->sline.status()) && | |
7dc5f514 | 2131 | esiEnableProcessing(reply)) { |
bf8fe701 | 2132 | debugs(88, 2, "Enabling ESI processing for " << http->uri); |
43ae1d95 | 2133 | clientStreamInsertHead(&http->client_stream, esiStreamRead, |
2134 | esiProcessStream, esiStreamDetach, esiStreamStatus, NULL); | |
2135 | } | |
2136 | ||
5ef38a13 | 2137 | #endif |
2138 | ||
c2a7cefd | 2139 | if (http->request->method == Http::METHOD_HEAD) { |
62e76326 | 2140 | /* do not forward body for HEAD replies */ |
2141 | body_size = 0; | |
be4d35dc | 2142 | http->flags.done_copying = true; |
62e76326 | 2143 | flags.complete = 1; |
2144 | } | |
2145 | ||
2146 | assert (!flags.headersSent); | |
2147 | flags.headersSent = true; | |
2148 | ||
8bcf08e0 | 2149 | StoreIOBuffer localTempBuffer; |
62e76326 | 2150 | char *buf = next()->readBuffer.data; |
e85eb4e1 | 2151 | char *body_buf = buf + reply->hdr_sz; |
62e76326 | 2152 | |
49ea0125 | 2153 | //Server side may disable ranges under some circumstances. |
2154 | ||
2155 | if ((!http->request->range)) | |
2156 | next()->readBuffer.offset = 0; | |
2157 | ||
e85eb4e1 AJ |
2158 | body_buf -= next()->readBuffer.offset; |
2159 | ||
62e76326 | 2160 | if (next()->readBuffer.offset != 0) { |
2161 | if (next()->readBuffer.offset > body_size) { | |
2324cda2 | 2162 | /* Can't use any of the body we received. send nothing */ |
8bcf08e0 FC |
2163 | localTempBuffer.length = 0; |
2164 | localTempBuffer.data = NULL; | |
62e76326 | 2165 | } else { |
8bcf08e0 FC |
2166 | localTempBuffer.length = body_size - next()->readBuffer.offset; |
2167 | localTempBuffer.data = body_buf + next()->readBuffer.offset; | |
62e76326 | 2168 | } |
2169 | } else { | |
8bcf08e0 FC |
2170 | localTempBuffer.length = body_size; |
2171 | localTempBuffer.data = body_buf; | |
62e76326 | 2172 | } |
2173 | ||
0655fa4d | 2174 | /* TODO??: move the data in the buffer back by the request header size */ |
62e76326 | 2175 | clientStreamCallback((clientStreamNode *)http->client_stream.head->data, |
8bcf08e0 | 2176 | http, reply, localTempBuffer); |
62e76326 | 2177 | |
2178 | return; | |
4993f571 | 2179 | } |
2180 | ||
528b2c61 | 2181 | void |
2182 | clientReplyContext::sendMoreData (StoreIOBuffer result) | |
2183 | { | |
50c09fc4 | 2184 | if (deleting) |
2185 | return; | |
2186 | ||
86a2f789 | 2187 | StoreEntry *entry = http->storeEntry(); |
50c09fc4 | 2188 | |
cda7024f CT |
2189 | if (ConnStateData * conn = http->getConn()) { |
2190 | if (!conn->isOpen()) { | |
2191 | debugs(33,3, "not sending more data to closing connection " << conn->clientConnection); | |
2192 | return; | |
2193 | } | |
2194 | if (conn->pinning.zeroReply) { | |
2195 | debugs(33,3, "not sending more data after a pinned zero reply " << conn->clientConnection); | |
2196 | return; | |
2197 | } | |
50c09fc4 | 2198 | |
4b5ea8a6 | 2199 | if (reqofs==0 && !http->logType.isTcpHit()) { |
cda7024f CT |
2200 | if (Ip::Qos::TheConfig.isHitTosActive()) { |
2201 | Ip::Qos::doTosLocalMiss(conn->clientConnection, http->request->hier.code); | |
2202 | } | |
2203 | if (Ip::Qos::TheConfig.isHitNfmarkActive()) { | |
2204 | Ip::Qos::doNfmarkLocalMiss(conn->clientConnection, http->request->hier.code); | |
2205 | } | |
2206 | } | |
2207 | ||
4b5ea8a6 | 2208 | debugs(88, 5, conn->clientConnection << |
cda7024f CT |
2209 | " '" << entry->url() << "'" << |
2210 | " out.offset=" << http->out.offset); | |
9af2f95b | 2211 | } |
50c09fc4 | 2212 | |
528b2c61 | 2213 | char *buf = next()->readBuffer.data; |
50c09fc4 | 2214 | |
da33c835 | 2215 | if (buf != result.data) { |
62e76326 | 2216 | /* we've got to copy some data */ |
2217 | assert(result.length <= next()->readBuffer.length); | |
41d00cd3 | 2218 | memcpy(buf, result.data, result.length); |
edce4d98 | 2219 | } |
62e76326 | 2220 | |
ab9c533b HN |
2221 | /* We've got the final data to start pushing... */ |
2222 | flags.storelogiccomplete = 1; | |
2223 | ||
4993f571 | 2224 | reqofs += result.length; |
2225 | ||
2226 | assert(reqofs <= HTTP_REQBUF_SZ || flags.headersSent); | |
62e76326 | 2227 | |
edce4d98 | 2228 | assert(http->request != NULL); |
62e76326 | 2229 | |
edce4d98 | 2230 | /* ESI TODO: remove this assert once everything is stable */ |
2231 | assert(http->client_stream.head->data | |
62e76326 | 2232 | && cbdataReferenceValid(http->client_stream.head->data)); |
528b2c61 | 2233 | |
2234 | makeThisHead(); | |
62e76326 | 2235 | |
bf8fe701 | 2236 | debugs(88, 5, "clientReplyContext::sendMoreData: " << http->uri << ", " << |
47f6e231 | 2237 | reqofs << " bytes (" << result.length << |
bf8fe701 | 2238 | " new bytes)"); |
528b2c61 | 2239 | |
edce4d98 | 2240 | /* update size of the request */ |
4993f571 | 2241 | reqsize = reqofs; |
62e76326 | 2242 | |
4993f571 | 2243 | if (errorInStream(result, reqofs)) { |
62e76326 | 2244 | sendStreamError(result); |
2245 | return; | |
edce4d98 | 2246 | } |
528b2c61 | 2247 | |
2248 | if (flags.headersSent) { | |
62e76326 | 2249 | pushStreamData (result, buf); |
2250 | return; | |
edce4d98 | 2251 | } |
62e76326 | 2252 | |
b297bcd0 | 2253 | cloneReply(); |
21b92762 | 2254 | |
c4a9875e VL |
2255 | #if USE_DELAY_POOLS |
2256 | if (sc) | |
2257 | sc->setDelayId(DelayId::DelayClient(http,reply)); | |
2258 | #endif | |
2259 | ||
b297bcd0 HN |
2260 | holdingBuffer = result; |
2261 | processReplyAccess(); | |
2262 | return; | |
edce4d98 | 2263 | } |
2264 | ||
819be284 EB |
2265 | void |
2266 | clientReplyContext::fillChecklist(ACLFilledChecklist &checklist) const | |
2267 | { | |
2268 | clientAclChecklistFill(checklist, http); | |
2269 | } | |
2270 | ||
edce4d98 | 2271 | /* Using this breaks the client layering just a little! |
2272 | */ | |
0655fa4d | 2273 | void |
f206b652 | 2274 | clientReplyContext::createStoreEntry(const HttpRequestMethod& m, RequestFlags reqFlags) |
edce4d98 | 2275 | { |
0655fa4d | 2276 | assert(http != NULL); |
edce4d98 | 2277 | /* |
2278 | * For erroneous requests, we might not have a h->request, | |
2279 | * so make a fake one. | |
2280 | */ | |
62e76326 | 2281 | |
b248c2a3 | 2282 | if (http->request == NULL) { |
5ceaee75 | 2283 | const MasterXaction::Pointer mx = new MasterXaction(XactionInitiator::initClient); |
bec110e4 EB |
2284 | // XXX: These fake URI parameters shadow the real (or error:...) URI. |
2285 | // TODO: Either always set the request earlier and assert here OR use | |
2286 | // http->uri (converted to Anyp::Uri) to create this catch-all request. | |
2287 | const_cast<HttpRequest *&>(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? | |
819be284 | 2296 | if (reqFlags.cachable && |
9d4e9cfb | 2297 | !reqFlags.needValidation && |
819be284 EB |
2298 | (m == Http::METHOD_GET || m == Http::METHOD_HEAD) && |
2299 | mayInitiateCollapsing()) { | |
9a9954ba | 2300 | // make the entry available for future requests now |
4310f8b0 | 2301 | (void)Store::Root().allowCollapsing(e, reqFlags, m); |
9a9954ba AR |
2302 | } |
2303 | ||
0655fa4d | 2304 | sc = storeClientListAdd(e, this); |
62e76326 | 2305 | |
9a0a18de | 2306 | #if USE_DELAY_POOLS |
0655fa4d | 2307 | sc->setDelayId(DelayId::DelayClient(http)); |
edce4d98 | 2308 | #endif |
62e76326 | 2309 | |
0655fa4d | 2310 | reqofs = 0; |
62e76326 | 2311 | |
0655fa4d | 2312 | reqsize = 0; |
62e76326 | 2313 | |
edce4d98 | 2314 | /* I don't think this is actually needed! -- adrian */ |
0655fa4d | 2315 | /* http->reqbuf = http->norm_reqbuf; */ |
2316 | // assert(http->reqbuf == http->norm_reqbuf); | |
edce4d98 | 2317 | /* The next line is illegal because we don't know if the client stream |
26ac0430 | 2318 | * buffers have been set up |
edce4d98 | 2319 | */ |
0655fa4d | 2320 | // storeClientCopy(http->sc, e, 0, HTTP_REQBUF_SZ, http->reqbuf, |
2321 | // SendMoreData, this); | |
edce4d98 | 2322 | /* So, we mark the store logic as complete */ |
8bcf08e0 | 2323 | flags.storelogiccomplete = 1; |
62e76326 | 2324 | |
edce4d98 | 2325 | /* and get the caller to request a read, from whereever they are */ |
62e76326 | 2326 | /* NOTE: after ANY data flows down the pipe, even one step, |
26ac0430 | 2327 | * this function CAN NOT be used to manage errors |
edce4d98 | 2328 | */ |
86a2f789 | 2329 | http->storeEntry(e); |
edce4d98 | 2330 | } |
2331 | ||
2332 | ErrorState * | |
955394ce | 2333 | clientBuildError(err_type page_id, Http::StatusCode status, char const *url, |
7e6eabbc | 2334 | Ip::Address &src_addr, HttpRequest * request, const AccessLogEntry::Pointer &al) |
edce4d98 | 2335 | { |
7e6eabbc | 2336 | const auto err = new ErrorState(page_id, status, request, al); |
cc192b50 | 2337 | err->src_addr = src_addr; |
62e76326 | 2338 | |
edce4d98 | 2339 | if (url) |
62e76326 | 2340 | err->url = xstrdup(url); |
2341 | ||
edce4d98 | 2342 | return err; |
2343 | } | |
f53969cc | 2344 |