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edce4d98 | 1 | /* |
262a0e14 | 2 | * $Id$ |
edce4d98 | 3 | * |
4 | * DEBUG: section 88 Client-side Reply Routines | |
5 | * AUTHOR: Robert Collins (Originally Duane Wessels in client_side.c) | |
6 | * | |
7 | * SQUID Web Proxy Cache http://www.squid-cache.org/ | |
8 | * ---------------------------------------------------------- | |
9 | * | |
10 | * Squid is the result of efforts by numerous individuals from | |
11 | * the Internet community; see the CONTRIBUTORS file for full | |
12 | * details. Many organizations have provided support for Squid's | |
13 | * development; see the SPONSORS file for full details. Squid is | |
14 | * Copyrighted (C) 2001 by the Regents of the University of | |
15 | * California; see the COPYRIGHT file for full details. Squid | |
16 | * incorporates software developed and/or copyrighted by other | |
17 | * sources; see the CREDITS file for full details. | |
18 | * | |
19 | * This program is free software; you can redistribute it and/or modify | |
20 | * it under the terms of the GNU General Public License as published by | |
21 | * the Free Software Foundation; either version 2 of the License, or | |
22 | * (at your option) any later version. | |
26ac0430 | 23 | * |
edce4d98 | 24 | * This program is distributed in the hope that it will be useful, |
25 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
26 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
27 | * GNU General Public License for more details. | |
26ac0430 | 28 | * |
edce4d98 | 29 | * You should have received a copy of the GNU General Public License |
30 | * along with this program; if not, write to the Free Software | |
31 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. | |
32 | * | |
33 | */ | |
f5bffbd5 | 34 | #include "config.h" |
edce4d98 | 35 | |
e1f7507e AJ |
36 | /* for ClientActiveRequests global */ |
37 | #include "dlink.h" | |
38 | ||
39 | /* old includes without reasons given. */ | |
edce4d98 | 40 | #include "squid.h" |
0655fa4d | 41 | #include "client_side_reply.h" |
aa839030 | 42 | #include "errorpage.h" |
c8be6d7b | 43 | #include "StoreClient.h" |
e6ccf245 | 44 | #include "Store.h" |
528b2c61 | 45 | #include "HttpReply.h" |
46 | #include "HttpRequest.h" | |
b6b6f466 | 47 | #include "forward.h" |
c8be6d7b | 48 | #include "clientStream.h" |
f5691f9c | 49 | #include "AuthUserRequest.h" |
f41735ea | 50 | #if USE_SQUID_ESI |
43ae1d95 | 51 | #include "ESI.h" |
52 | #endif | |
528b2c61 | 53 | #include "MemObject.h" |
7172612f | 54 | #include "fde.h" |
4fb35c3c | 55 | #include "ACLChecklist.h" |
b0dd28ba | 56 | #include "ACL.h" |
b67e2c8c | 57 | #if DELAY_POOLS |
58 | #include "DelayPools.h" | |
59 | #endif | |
a46d2c0e | 60 | #include "client_side.h" |
985c86bc | 61 | #include "SquidTime.h" |
e6ccf245 | 62 | |
0655fa4d | 63 | CBDATA_CLASS_INIT(clientReplyContext); |
edce4d98 | 64 | |
edce4d98 | 65 | /* Local functions */ |
e6ccf245 | 66 | extern "C" CSS clientReplyStatus; |
ad61a2b4 | 67 | extern ErrorState *clientBuildError(err_type, http_status, char const *, IpAddress &, HttpRequest *); |
edce4d98 | 68 | |
edce4d98 | 69 | /* privates */ |
edce4d98 | 70 | |
0655fa4d | 71 | clientReplyContext::~clientReplyContext() |
edce4d98 | 72 | { |
50c09fc4 | 73 | deleting = true; |
74 | /* This may trigger a callback back into SendMoreData as the cbdata | |
75 | * is still valid | |
76 | */ | |
86a2f789 | 77 | removeClientStoreReference(&sc, http); |
edce4d98 | 78 | /* old_entry might still be set if we didn't yet get the reply |
0655fa4d | 79 | * code in HandleIMSReply() */ |
80 | removeStoreReference(&old_sc, &old_entry); | |
81 | safe_free(tempBuffer.data); | |
82 | cbdataReferenceDone(http); | |
2b7d324b | 83 | HTTPMSGUNLOCK(reply); |
edce4d98 | 84 | } |
85 | ||
59a1efb2 | 86 | clientReplyContext::clientReplyContext(ClientHttpRequest *clientContext) : http (cbdataReference(clientContext)), old_entry (NULL), old_sc(NULL), deleting(false) |
0655fa4d | 87 | {} |
edce4d98 | 88 | |
89 | /* create an error in the store awaiting the client side to read it. */ | |
0655fa4d | 90 | /* This may be better placed in the clientStream logic, but it has not been |
91 | * relocated there yet | |
92 | */ | |
edce4d98 | 93 | void |
0655fa4d | 94 | clientReplyContext::setReplyToError( |
60745f24 | 95 | err_type err, http_status status, const HttpRequestMethod& method, char const *uri, |
ad61a2b4 | 96 | IpAddress &addr, HttpRequest * failedrequest, char *unparsedrequest, |
76f142cd | 97 | AuthUserRequest * auth_user_request) |
edce4d98 | 98 | { |
edce4d98 | 99 | ErrorState *errstate = |
62e76326 | 100 | clientBuildError(err, status, uri, addr, failedrequest); |
101 | ||
edce4d98 | 102 | if (unparsedrequest) |
62e76326 | 103 | errstate->request_hdrs = xstrdup(unparsedrequest); |
edce4d98 | 104 | |
0655fa4d | 105 | if (status == HTTP_NOT_IMPLEMENTED && http->request) |
62e76326 | 106 | /* prevent confusion over whether we default to persistent or not */ |
0655fa4d | 107 | http->request->flags.proxy_keepalive = 0; |
62e76326 | 108 | |
0655fa4d | 109 | http->al.http.code = errstate->httpStatus; |
edce4d98 | 110 | |
0655fa4d | 111 | createStoreEntry(method, request_flags()); |
62e76326 | 112 | |
26ac0430 | 113 | if (auth_user_request) { |
62e76326 | 114 | errstate->auth_user_request = auth_user_request; |
26ac0430 | 115 | AUTHUSERREQUESTLOCK(errstate->auth_user_request, "errstate"); |
edce4d98 | 116 | } |
62e76326 | 117 | |
edce4d98 | 118 | assert(errstate->callback_data == NULL); |
86a2f789 | 119 | errorAppendEntry(http->storeEntry(), errstate); |
edce4d98 | 120 | /* Now the caller reads to get this */ |
121 | } | |
122 | ||
123 | void | |
0655fa4d | 124 | clientReplyContext::removeStoreReference(store_client ** scp, |
125 | StoreEntry ** ep) | |
edce4d98 | 126 | { |
127 | StoreEntry *e; | |
128 | store_client *sc = *scp; | |
62e76326 | 129 | |
edce4d98 | 130 | if ((e = *ep) != NULL) { |
62e76326 | 131 | *ep = NULL; |
0655fa4d | 132 | storeUnregister(sc, e, this); |
62e76326 | 133 | *scp = NULL; |
97b5e68f | 134 | e->unlock(); |
edce4d98 | 135 | } |
136 | } | |
137 | ||
86a2f789 | 138 | void |
139 | clientReplyContext::removeClientStoreReference(store_client **scp, ClientHttpRequest *http) | |
140 | { | |
141 | StoreEntry *reference = http->storeEntry(); | |
142 | removeStoreReference(scp, &reference); | |
143 | http->storeEntry(reference); | |
144 | } | |
145 | ||
e6ccf245 | 146 | void * |
a695955b | 147 | clientReplyContext::operator new (size_t byteCount) |
e6ccf245 | 148 | { |
149 | /* derived classes with different sizes must implement their own new */ | |
150 | assert (byteCount == sizeof (clientReplyContext)); | |
0655fa4d | 151 | CBDATA_INIT_TYPE(clientReplyContext); |
e6ccf245 | 152 | return cbdataAlloc(clientReplyContext); |
153 | } | |
154 | ||
155 | void | |
156 | clientReplyContext::operator delete (void *address) | |
157 | { | |
a50bfe93 | 158 | clientReplyContext * tmp = (clientReplyContext *)address; |
159 | cbdataFree (tmp); | |
e6ccf245 | 160 | } |
161 | ||
edce4d98 | 162 | void |
0655fa4d | 163 | clientReplyContext::saveState() |
edce4d98 | 164 | { |
e6ccf245 | 165 | assert(old_sc == NULL); |
bf8fe701 | 166 | debugs(88, 3, "clientReplyContext::saveState: saving store context"); |
86a2f789 | 167 | old_entry = http->storeEntry(); |
e6ccf245 | 168 | old_sc = sc; |
169 | old_reqsize = reqsize; | |
170 | tempBuffer.offset = reqofs; | |
edce4d98 | 171 | /* Prevent accessing the now saved entries */ |
86a2f789 | 172 | http->storeEntry(NULL); |
e6ccf245 | 173 | sc = NULL; |
174 | reqsize = 0; | |
175 | reqofs = 0; | |
edce4d98 | 176 | } |
177 | ||
178 | void | |
0655fa4d | 179 | clientReplyContext::restoreState() |
edce4d98 | 180 | { |
e6ccf245 | 181 | assert(old_sc != NULL); |
bf8fe701 | 182 | debugs(88, 3, "clientReplyContext::restoreState: Restoring store context"); |
86a2f789 | 183 | removeClientStoreReference(&sc, http); |
184 | http->storeEntry(old_entry); | |
e6ccf245 | 185 | sc = old_sc; |
186 | reqsize = old_reqsize; | |
187 | reqofs = tempBuffer.offset; | |
edce4d98 | 188 | /* Prevent accessed the old saved entries */ |
0655fa4d | 189 | old_entry = NULL; |
e6ccf245 | 190 | old_sc = NULL; |
191 | old_reqsize = 0; | |
192 | tempBuffer.offset = 0; | |
c8be6d7b | 193 | } |
194 | ||
195 | void | |
0655fa4d | 196 | clientReplyContext::startError(ErrorState * err) |
c8be6d7b | 197 | { |
0655fa4d | 198 | createStoreEntry(http->request->method, request_flags()); |
199 | triggerInitialStoreRead(); | |
86a2f789 | 200 | errorAppendEntry(http->storeEntry(), err); |
edce4d98 | 201 | } |
202 | ||
e6ccf245 | 203 | clientStreamNode * |
528b2c61 | 204 | clientReplyContext::getNextNode() const |
e6ccf245 | 205 | { |
62e76326 | 206 | return (clientStreamNode *)ourNode->node.next->data; |
e6ccf245 | 207 | } |
208 | ||
62e76326 | 209 | /* This function is wrong - the client parameters don't include the |
528b2c61 | 210 | * header offset |
211 | */ | |
c8be6d7b | 212 | void |
0655fa4d | 213 | clientReplyContext::triggerInitialStoreRead() |
c8be6d7b | 214 | { |
0655fa4d | 215 | /* when confident, 0 becomes reqofs, and then this factors into |
26ac0430 | 216 | * startSendProcess |
528b2c61 | 217 | */ |
0655fa4d | 218 | assert(reqofs == 0); |
dd272b8e | 219 | StoreIOBuffer tempBuffer (next()->readBuffer.length, 0, next()->readBuffer.data); |
86a2f789 | 220 | storeClientCopy(sc, http->storeEntry(), tempBuffer, SendMoreData, this); |
c8be6d7b | 221 | } |
edce4d98 | 222 | |
223 | /* there is an expired entry in the store. | |
224 | * setup a temporary buffer area and perform an IMS to the origin | |
225 | */ | |
0655fa4d | 226 | void |
227 | clientReplyContext::processExpired() | |
edce4d98 | 228 | { |
edce4d98 | 229 | char *url = http->uri; |
230 | StoreEntry *entry = NULL; | |
bf8fe701 | 231 | debugs(88, 3, "clientReplyContext::processExpired: '" << http->uri << "'"); |
86a2f789 | 232 | assert(http->storeEntry()->lastmod >= 0); |
edce4d98 | 233 | /* |
234 | * check if we are allowed to contact other servers | |
26ac0430 | 235 | * @?@: Instead of a 504 (Gateway Timeout) reply, we may want to return |
edce4d98 | 236 | * a stale entry *if* it matches client requirements |
237 | */ | |
62e76326 | 238 | |
0655fa4d | 239 | if (http->onlyIfCached()) { |
240 | processOnlyIfCachedMiss(); | |
62e76326 | 241 | return; |
edce4d98 | 242 | } |
62e76326 | 243 | |
edce4d98 | 244 | http->request->flags.refresh = 1; |
245 | #if STORE_CLIENT_LIST_DEBUG | |
c8be6d7b | 246 | /* Prevent a race with the store client memory free routines |
edce4d98 | 247 | */ |
0655fa4d | 248 | assert(storeClientIsThisAClient(sc, this)); |
edce4d98 | 249 | #endif |
250 | /* Prepare to make a new temporary request */ | |
0655fa4d | 251 | saveState(); |
edce4d98 | 252 | entry = storeCreateEntry(url, |
62e76326 | 253 | http->log_uri, http->request->flags, http->request->method); |
34266cde | 254 | /* NOTE, don't call StoreEntry->lock(), storeCreateEntry() does it */ |
0655fa4d | 255 | sc = storeClientListAdd(entry, this); |
edce4d98 | 256 | #if DELAY_POOLS |
257 | /* delay_id is already set on original store client */ | |
0655fa4d | 258 | sc->setDelayId(DelayId::DelayClient(http)); |
edce4d98 | 259 | #endif |
62e76326 | 260 | |
0655fa4d | 261 | http->request->lastmod = old_entry->lastmod; |
4a7a3d56 | 262 | debugs(88, 5, "clientReplyContext::processExpired : lastmod " << entry->lastmod ); |
86a2f789 | 263 | http->storeEntry(entry); |
c8be6d7b | 264 | assert(http->out.offset == 0); |
b2d22df6 | 265 | |
266 | /* | |
267 | * A refcounted pointer so that FwdState stays around as long as | |
268 | * this clientReplyContext does | |
269 | */ | |
94a396a3 | 270 | FwdState::fwdStart(http->getConn() != NULL ? http->getConn()->fd : -1, |
be0c6690 | 271 | http->storeEntry(), |
272 | http->request); | |
edce4d98 | 273 | /* Register with storage manager to receive updates when data comes in. */ |
62e76326 | 274 | |
edce4d98 | 275 | if (EBIT_TEST(entry->flags, ENTRY_ABORTED)) |
bf8fe701 | 276 | debugs(88, 0, "clientReplyContext::processExpired: Found ENTRY_ABORTED object"); |
62e76326 | 277 | |
c8be6d7b | 278 | { |
62e76326 | 279 | /* start counting the length from 0 */ |
0655fa4d | 280 | StoreIOBuffer tempBuffer(HTTP_REQBUF_SZ, 0, tempbuf); |
281 | storeClientCopy(sc, entry, tempBuffer, HandleIMSReply, this); | |
edce4d98 | 282 | } |
283 | } | |
284 | ||
edce4d98 | 285 | |
528b2c61 | 286 | void |
287 | clientReplyContext::sendClientUpstreamResponse() | |
288 | { | |
289 | StoreIOBuffer tempresult; | |
0655fa4d | 290 | removeStoreReference(&old_sc, &old_entry); |
2324cda2 | 291 | /* here the data to send is the data we just received */ |
528b2c61 | 292 | tempBuffer.offset = 0; |
293 | old_reqsize = 0; | |
0655fa4d | 294 | /* sendMoreData tracks the offset as well. |
528b2c61 | 295 | * Force it back to zero */ |
296 | reqofs = 0; | |
86a2f789 | 297 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 298 | /* TODO: provide sendMoreData with the ready parsed reply */ |
528b2c61 | 299 | tempresult.length = reqsize; |
300 | tempresult.data = tempbuf; | |
0655fa4d | 301 | sendMoreData(tempresult); |
528b2c61 | 302 | } |
303 | ||
edce4d98 | 304 | void |
0655fa4d | 305 | clientReplyContext::HandleIMSReply(void *data, StoreIOBuffer result) |
edce4d98 | 306 | { |
e6ccf245 | 307 | clientReplyContext *context = (clientReplyContext *)data; |
0655fa4d | 308 | context->handleIMSReply(result); |
309 | } | |
62e76326 | 310 | |
0655fa4d | 311 | void |
312 | clientReplyContext::sendClientOldEntry() | |
313 | { | |
314 | /* Get the old request back */ | |
315 | restoreState(); | |
316 | /* here the data to send is in the next nodes buffers already */ | |
86a2f789 | 317 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 318 | /* sendMoreData tracks the offset as well. |
319 | * Force it back to zero */ | |
320 | reqofs = 0; | |
321 | StoreIOBuffer tempresult (reqsize, reqofs, next()->readBuffer.data); | |
322 | sendMoreData(tempresult); | |
323 | } | |
62e76326 | 324 | |
1d7ab0f4 | 325 | /* This is the workhorse of the HandleIMSReply callback. |
326 | * | |
327 | * It is called when we've got data back from the origin following our | |
328 | * IMS request to revalidate a stale entry. | |
329 | */ | |
0655fa4d | 330 | void |
1d7ab0f4 | 331 | clientReplyContext::handleIMSReply(StoreIOBuffer result) |
0655fa4d | 332 | { |
1d7ab0f4 | 333 | if (deleting) |
334 | return; | |
62e76326 | 335 | |
bf8fe701 | 336 | debugs(88, 3, "handleIMSReply: " << http->storeEntry()->url() << ", " << (long unsigned) result.length << " bytes" ); |
62e76326 | 337 | |
1d7ab0f4 | 338 | if (http->storeEntry() == NULL) |
339 | return; | |
07947ad8 | 340 | |
1d7ab0f4 | 341 | if (result.flags.error && !EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) |
342 | return; | |
62e76326 | 343 | |
1d7ab0f4 | 344 | /* update size of the request */ |
345 | reqsize = result.length + reqofs; | |
62e76326 | 346 | |
1d7ab0f4 | 347 | const http_status status = http->storeEntry()->getReply()->sline.status; |
62e76326 | 348 | |
1d7ab0f4 | 349 | // request to origin was aborted |
350 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) { | |
bf8fe701 | 351 | debugs(88, 3, "handleIMSReply: request to origin aborted '" << http->storeEntry()->url() << "', sending old entry to client" ); |
1d7ab0f4 | 352 | http->logType = LOG_TCP_REFRESH_FAIL; |
353 | sendClientOldEntry(); | |
0655fa4d | 354 | } |
62e76326 | 355 | |
b297bcd0 | 356 | HttpReply *old_rep = (HttpReply *) old_entry->getReply(); |
62e76326 | 357 | |
b297bcd0 | 358 | // origin replied 304 |
62e76326 | 359 | |
b297bcd0 | 360 | if (status == HTTP_NOT_MODIFIED) { |
26ac0430 | 361 | http->logType = LOG_TCP_REFRESH_UNMODIFIED; |
045a76ab | 362 | |
26ac0430 AJ |
363 | // update headers on existing entry |
364 | HttpReply *old_rep = (HttpReply *) old_entry->getReply(); | |
365 | old_rep->updateOnNotModified(http->storeEntry()->getReply()); | |
366 | old_entry->timestampsSet(); | |
62e76326 | 367 | |
26ac0430 | 368 | // if client sent IMS |
62e76326 | 369 | |
26ac0430 AJ |
370 | if (http->request->flags.ims) { |
371 | // forward the 304 from origin | |
372 | debugs(88, 3, "handleIMSReply: origin replied 304, revalidating existing entry and forwarding 304 to client"); | |
373 | sendClientUpstreamResponse(); | |
374 | } else { | |
375 | // send existing entry, it's still valid | |
376 | debugs(88, 3, "handleIMSReply: origin replied 304, revalidating existing entry and sending " << | |
377 | old_rep->sline.status << " to client"); | |
378 | sendClientOldEntry(); | |
379 | } | |
b297bcd0 | 380 | } |
62e76326 | 381 | |
b297bcd0 HN |
382 | // origin replied with a non-error code |
383 | else if (status > HTTP_STATUS_NONE && status < HTTP_INTERNAL_SERVER_ERROR) { | |
26ac0430 AJ |
384 | // forward response from origin |
385 | http->logType = LOG_TCP_REFRESH_MODIFIED; | |
386 | debugs(88, 3, "handleIMSReply: origin replied " << status << ", replacing existing entry and forwarding to client"); | |
387 | sendClientUpstreamResponse(); | |
b297bcd0 | 388 | } |
62e76326 | 389 | |
b297bcd0 HN |
390 | // origin replied with an error |
391 | else { | |
26ac0430 AJ |
392 | // ignore and let client have old entry |
393 | http->logType = LOG_TCP_REFRESH_FAIL; | |
394 | debugs(88, 3, "handleIMSReply: origin replied with error " << | |
395 | status << ", sending old entry (" << old_rep->sline.status << ") to client"); | |
396 | sendClientOldEntry(); | |
1d7ab0f4 | 397 | } |
edce4d98 | 398 | } |
399 | ||
e6ccf245 | 400 | extern "C" CSR clientGetMoreData; |
401 | extern "C" CSD clientReplyDetach; | |
edce4d98 | 402 | |
7d5f62a4 AJ |
403 | /** |
404 | * clientReplyContext::cacheHit Should only be called until the HTTP reply headers | |
edce4d98 | 405 | * have been parsed. Normally this should be a single call, but |
406 | * it might take more than one. As soon as we have the headers, | |
0655fa4d | 407 | * we hand off to clientSendMoreData, processExpired, or |
408 | * processMiss. | |
edce4d98 | 409 | */ |
410 | void | |
0655fa4d | 411 | clientReplyContext::CacheHit(void *data, StoreIOBuffer result) |
edce4d98 | 412 | { |
e6ccf245 | 413 | clientReplyContext *context = (clientReplyContext *)data; |
7d5f62a4 | 414 | context->cacheHit(result); |
0655fa4d | 415 | } |
416 | ||
7d5f62a4 AJ |
417 | /** |
418 | * Process a possible cache HIT. | |
419 | */ | |
0655fa4d | 420 | void |
421 | clientReplyContext::cacheHit(StoreIOBuffer result) | |
422 | { | |
7d5f62a4 | 423 | /** Ignore if the HIT object is being deleted. */ |
045a76ab | 424 | if (deleting) |
425 | return; | |
426 | ||
86a2f789 | 427 | StoreEntry *e = http->storeEntry(); |
045a76ab | 428 | |
190154cf | 429 | HttpRequest *r = http->request; |
045a76ab | 430 | |
4a7a3d56 | 431 | debugs(88, 3, "clientCacheHit: " << http->uri << ", " << result.length << " bytes"); |
62e76326 | 432 | |
86a2f789 | 433 | if (http->storeEntry() == NULL) { |
bf8fe701 | 434 | debugs(88, 3, "clientCacheHit: request aborted"); |
62e76326 | 435 | return; |
c8be6d7b | 436 | } else if (result.flags.error) { |
62e76326 | 437 | /* swap in failure */ |
bf8fe701 | 438 | debugs(88, 3, "clientCacheHit: swapin failure for " << http->uri); |
62e76326 | 439 | http->logType = LOG_TCP_SWAPFAIL_MISS; |
86a2f789 | 440 | removeClientStoreReference(&sc, http); |
0655fa4d | 441 | processMiss(); |
62e76326 | 442 | return; |
edce4d98 | 443 | } |
62e76326 | 444 | |
d3b3ab85 | 445 | if (result.length == 0) { |
62e76326 | 446 | /* the store couldn't get enough data from the file for us to id the |
447 | * object | |
448 | */ | |
449 | /* treat as a miss */ | |
450 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 451 | processMiss(); |
62e76326 | 452 | return; |
d3b3ab85 | 453 | } |
62e76326 | 454 | |
edce4d98 | 455 | assert(!EBIT_TEST(e->flags, ENTRY_ABORTED)); |
456 | /* update size of the request */ | |
0655fa4d | 457 | reqsize = result.length + reqofs; |
62e76326 | 458 | |
edce4d98 | 459 | /* |
460 | * Got the headers, now grok them | |
461 | */ | |
29b8d8d6 | 462 | assert(http->logType == LOG_TCP_HIT); |
62e76326 | 463 | |
cdd4e1c1 | 464 | if (strcmp(e->mem_obj->url, urlCanonical(r)) != 0) { |
26ac0430 | 465 | debugs(33, 1, "clientProcessHit: URL mismatch, '" << e->mem_obj->url << "' != '" << urlCanonical(r) << "'"); |
cdd4e1c1 | 466 | processMiss(); |
467 | return; | |
468 | } | |
469 | ||
edce4d98 | 470 | switch (varyEvaluateMatch(e, r)) { |
62e76326 | 471 | |
edce4d98 | 472 | case VARY_NONE: |
62e76326 | 473 | /* No variance detected. Continue as normal */ |
474 | break; | |
475 | ||
edce4d98 | 476 | case VARY_MATCH: |
62e76326 | 477 | /* This is the correct entity for this request. Continue */ |
bf8fe701 | 478 | debugs(88, 2, "clientProcessHit: Vary MATCH!"); |
62e76326 | 479 | break; |
480 | ||
edce4d98 | 481 | case VARY_OTHER: |
62e76326 | 482 | /* This is not the correct entity for this request. We need |
483 | * to requery the cache. | |
484 | */ | |
86a2f789 | 485 | removeClientStoreReference(&sc, http); |
62e76326 | 486 | e = NULL; |
487 | /* Note: varyEvalyateMatch updates the request with vary information | |
488 | * so we only get here once. (it also takes care of cancelling loops) | |
489 | */ | |
26ac0430 | 490 | debugs(88, 2, "clientProcessHit: Vary detected!"); |
0655fa4d | 491 | clientGetMoreData(ourNode, http); |
62e76326 | 492 | return; |
493 | ||
edce4d98 | 494 | case VARY_CANCEL: |
62e76326 | 495 | /* varyEvaluateMatch found a object loop. Process as miss */ |
bf8fe701 | 496 | debugs(88, 1, "clientProcessHit: Vary object loop!"); |
0655fa4d | 497 | processMiss(); |
62e76326 | 498 | return; |
edce4d98 | 499 | } |
62e76326 | 500 | |
edce4d98 | 501 | if (r->method == METHOD_PURGE) { |
86a2f789 | 502 | removeClientStoreReference(&sc, http); |
62e76326 | 503 | e = NULL; |
0655fa4d | 504 | purgeRequest(); |
62e76326 | 505 | return; |
edce4d98 | 506 | } |
62e76326 | 507 | |
3900307b | 508 | if (e->checkNegativeHit() |
36e6655b | 509 | #if HTTP_VIOLATIONS |
510 | && !r->flags.nocache_hack | |
511 | #endif | |
512 | ) { | |
62e76326 | 513 | http->logType = LOG_TCP_NEGATIVE_HIT; |
0655fa4d | 514 | sendMoreData(result); |
f7cf9b8c | 515 | } else if (!Config.onoff.offline && refreshCheckHTTP(e, r) && !http->flags.internal) { |
bf8fe701 | 516 | debugs(88, 5, "clientCacheHit: in refreshCheck() block"); |
62e76326 | 517 | /* |
518 | * We hold a stale copy; it needs to be validated | |
519 | */ | |
520 | /* | |
521 | * The 'need_validation' flag is used to prevent forwarding | |
522 | * loops between siblings. If our copy of the object is stale, | |
523 | * then we should probably only use parents for the validation | |
524 | * request. Otherwise two siblings could generate a loop if | |
525 | * both have a stale version of the object. | |
526 | */ | |
527 | r->flags.need_validation = 1; | |
528 | ||
529 | if (e->lastmod < 0) { | |
530 | /* | |
531 | * Previous reply didn't have a Last-Modified header, | |
532 | * we cannot revalidate it. | |
533 | */ | |
534 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 535 | processMiss(); |
62e76326 | 536 | } else if (r->flags.nocache) { |
537 | /* | |
538 | * This did not match a refresh pattern that overrides no-cache | |
539 | * we should honour the client no-cache header. | |
540 | */ | |
541 | http->logType = LOG_TCP_CLIENT_REFRESH_MISS; | |
0655fa4d | 542 | processMiss(); |
62e76326 | 543 | } else if (r->protocol == PROTO_HTTP) { |
544 | /* | |
545 | * Object needs to be revalidated | |
546 | * XXX This could apply to FTP as well, if Last-Modified is known. | |
547 | */ | |
0655fa4d | 548 | processExpired(); |
62e76326 | 549 | } else { |
550 | /* | |
551 | * We don't know how to re-validate other protocols. Handle | |
552 | * them as if the object has expired. | |
553 | */ | |
554 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 555 | processMiss(); |
62e76326 | 556 | } |
edce4d98 | 557 | } else if (r->flags.ims) { |
62e76326 | 558 | /* |
559 | * Handle If-Modified-Since requests from the client | |
560 | */ | |
561 | ||
562 | if (e->getReply()->sline.status != HTTP_OK) { | |
bf8fe701 | 563 | debugs(88, 4, "clientCacheHit: Reply code " << |
564 | e->getReply()->sline.status << " != 200"); | |
62e76326 | 565 | http->logType = LOG_TCP_MISS; |
0655fa4d | 566 | processMiss(); |
567 | } else if (e->modifiedSince(http->request)) { | |
62e76326 | 568 | http->logType = LOG_TCP_IMS_HIT; |
0655fa4d | 569 | sendMoreData(result); |
62e76326 | 570 | } else { |
0655fa4d | 571 | time_t const timestamp = e->timestamp; |
06a5ae20 | 572 | HttpReply *temprep = e->getReply()->make304(); |
62e76326 | 573 | http->logType = LOG_TCP_IMS_HIT; |
86a2f789 | 574 | removeClientStoreReference(&sc, http); |
0655fa4d | 575 | createStoreEntry(http->request->method, |
576 | request_flags()); | |
86a2f789 | 577 | e = http->storeEntry(); |
62e76326 | 578 | /* |
579 | * Copy timestamp from the original entry so the 304 | |
580 | * reply has a meaningful Age: header. | |
581 | */ | |
582 | e->timestamp = timestamp; | |
db237875 | 583 | e->replaceHttpReply(temprep); |
62e76326 | 584 | e->complete(); |
585 | /* TODO: why put this in the store and then serialise it and then parse it again. | |
586 | * Simply mark the request complete in our context and | |
587 | * write the reply struct to the client side | |
588 | */ | |
0655fa4d | 589 | triggerInitialStoreRead(); |
62e76326 | 590 | } |
edce4d98 | 591 | } else { |
62e76326 | 592 | /* |
593 | * plain ol' cache hit | |
594 | */ | |
595 | ||
8d5f19a0 | 596 | #if DELAY_POOLS |
ffdf45f2 | 597 | if (e->store_status != STORE_OK) |
849b826a | 598 | http->logType = LOG_TCP_MISS; |
5bf4d170 | 599 | else |
600 | #endif | |
26ac0430 AJ |
601 | if (e->mem_status == IN_MEMORY) |
602 | http->logType = LOG_TCP_MEM_HIT; | |
603 | else if (Config.onoff.offline) | |
604 | http->logType = LOG_TCP_OFFLINE_HIT; | |
62e76326 | 605 | |
0655fa4d | 606 | sendMoreData(result); |
edce4d98 | 607 | } |
608 | } | |
609 | ||
7d5f62a4 | 610 | /** |
edce4d98 | 611 | * Prepare to fetch the object as it's a cache miss of some kind. |
612 | */ | |
613 | void | |
0655fa4d | 614 | clientReplyContext::processMiss() |
edce4d98 | 615 | { |
edce4d98 | 616 | char *url = http->uri; |
190154cf | 617 | HttpRequest *r = http->request; |
edce4d98 | 618 | ErrorState *err = NULL; |
60745f24 | 619 | debugs(88, 4, "clientProcessMiss: '" << RequestMethodStr(r->method) << " " << url << "'"); |
7d5f62a4 AJ |
620 | |
621 | /** | |
edce4d98 | 622 | * We might have a left-over StoreEntry from a failed cache hit |
623 | * or IMS request. | |
624 | */ | |
86a2f789 | 625 | if (http->storeEntry()) { |
626 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_SPECIAL)) { | |
bf8fe701 | 627 | debugs(88, 0, "clientProcessMiss: miss on a special object (" << url << ")."); |
628 | debugs(88, 0, "\tlog_type = " << log_tags[http->logType]); | |
3900307b | 629 | http->storeEntry()->dump(1); |
62e76326 | 630 | } |
631 | ||
86a2f789 | 632 | removeClientStoreReference(&sc, http); |
edce4d98 | 633 | } |
62e76326 | 634 | |
7d5f62a4 | 635 | /** Check if its a PURGE request to be actioned. */ |
edce4d98 | 636 | if (r->method == METHOD_PURGE) { |
0655fa4d | 637 | purgeRequest(); |
62e76326 | 638 | return; |
edce4d98 | 639 | } |
914b89a2 | 640 | |
7d5f62a4 | 641 | /** Check if its an 'OTHER' request. Purge all cached entries if so and continue. */ |
914b89a2 | 642 | if (r->method == METHOD_OTHER) { |
26ac0430 | 643 | purgeAllCached(); |
60745f24 | 644 | } |
62e76326 | 645 | |
7d5f62a4 | 646 | /** Check if 'only-if-cached' flag is set. Action if so. */ |
0655fa4d | 647 | if (http->onlyIfCached()) { |
648 | processOnlyIfCachedMiss(); | |
62e76326 | 649 | return; |
edce4d98 | 650 | } |
62e76326 | 651 | |
7d5f62a4 | 652 | /** |
edce4d98 | 653 | * Deny loops when running in accelerator/transproxy mode. |
654 | */ | |
655 | if (http->flags.accel && r->flags.loopdetect) { | |
62e76326 | 656 | http->al.http.code = HTTP_FORBIDDEN; |
cc192b50 | 657 | err = clientBuildError(ERR_ACCESS_DENIED, HTTP_FORBIDDEN, NULL, http->getConn()->peer, http->request); |
0655fa4d | 658 | createStoreEntry(r->method, request_flags()); |
86a2f789 | 659 | errorAppendEntry(http->storeEntry(), err); |
0655fa4d | 660 | triggerInitialStoreRead(); |
62e76326 | 661 | return; |
edce4d98 | 662 | } else { |
26ac0430 | 663 | assert(http->out.offset == 0); |
0655fa4d | 664 | createStoreEntry(r->method, r->flags); |
665 | triggerInitialStoreRead(); | |
62e76326 | 666 | |
667 | if (http->redirect.status) { | |
06a5ae20 | 668 | HttpReply *rep = new HttpReply; |
edce4d98 | 669 | #if LOG_TCP_REDIRECTS |
62e76326 | 670 | |
671 | http->logType = LOG_TCP_REDIRECT; | |
edce4d98 | 672 | #endif |
62e76326 | 673 | |
d88e3c49 | 674 | http->storeEntry()->releaseRequest(); |
06a5ae20 | 675 | rep->redirect(http->redirect.status, http->redirect.location); |
db237875 | 676 | http->storeEntry()->replaceHttpReply(rep); |
86a2f789 | 677 | http->storeEntry()->complete(); |
62e76326 | 678 | return; |
679 | } | |
680 | ||
7d5f62a4 | 681 | /** Check for internal requests. Update Protocol info if so. */ |
62e76326 | 682 | if (http->flags.internal) |
683 | r->protocol = PROTO_INTERNAL; | |
684 | ||
7d5f62a4 | 685 | /** Start forwarding to get the new object from network */ |
94a396a3 | 686 | FwdState::fwdStart(http->getConn() != NULL ? http->getConn()->fd : -1, |
be0c6690 | 687 | http->storeEntry(), |
688 | r); | |
edce4d98 | 689 | } |
690 | } | |
691 | ||
7d5f62a4 | 692 | /** |
edce4d98 | 693 | * client issued a request with an only-if-cached cache-control directive; |
694 | * we did not find a cached object that can be returned without | |
695 | * contacting other servers; | |
696 | * respond with a 504 (Gateway Timeout) as suggested in [RFC 2068] | |
697 | */ | |
0655fa4d | 698 | void |
699 | clientReplyContext::processOnlyIfCachedMiss() | |
edce4d98 | 700 | { |
edce4d98 | 701 | ErrorState *err = NULL; |
bf8fe701 | 702 | debugs(88, 4, "clientProcessOnlyIfCachedMiss: '" << |
60745f24 | 703 | RequestMethodStr(http->request->method) << " " << http->uri << "'"); |
edce4d98 | 704 | http->al.http.code = HTTP_GATEWAY_TIMEOUT; |
cc192b50 | 705 | err = clientBuildError(ERR_ONLY_IF_CACHED_MISS, HTTP_GATEWAY_TIMEOUT, NULL, http->getConn()->peer, http->request); |
86a2f789 | 706 | removeClientStoreReference(&sc, http); |
0655fa4d | 707 | startError(err); |
edce4d98 | 708 | } |
709 | ||
710 | void | |
e6ccf245 | 711 | clientReplyContext::purgeRequestFindObjectToPurge() |
26ac0430 | 712 | { |
e6ccf245 | 713 | /* Try to find a base entry */ |
714 | http->flags.purging = 1; | |
715 | lookingforstore = 1; | |
26ac0430 AJ |
716 | |
717 | // TODO: can we use purgeAllCached() here instead of doing the | |
718 | // getPublicByRequestMethod() dance? | |
3b13a8fd | 719 | StoreEntry::getPublicByRequestMethod(this, http->request, METHOD_GET); |
e6ccf245 | 720 | } |
721 | ||
c1520b67 AJ |
722 | // Purges all entries with a given url |
723 | // TODO: move to SideAgent parent, when we have one | |
60745f24 | 724 | /* |
725 | * We probably cannot purge Vary-affected responses because their MD5 | |
726 | * keys depend on vary headers. | |
727 | */ | |
c1520b67 | 728 | void |
90bd689c | 729 | purgeEntriesByUrl(HttpRequest * req, const char *url) |
c1520b67 | 730 | { |
8dceeee3 BR |
731 | #if USE_HTCP |
732 | bool get_or_head_sent = false; | |
733 | #endif | |
26ac0430 | 734 | |
c1520b67 AJ |
735 | for (HttpRequestMethod m(METHOD_NONE); m != METHOD_ENUM_END; ++m) { |
736 | if (m.isCacheble()) { | |
737 | if (StoreEntry *entry = storeGetPublic(url, m)) { | |
738 | debugs(88, 5, "purging " << RequestMethodStr(m) << ' ' << url); | |
90bd689c | 739 | #if USE_HTCP |
8dceeee3 BR |
740 | neighborsHtcpClear(entry, url, req, m, HTCP_CLR_INVALIDATION); |
741 | if (m == METHOD_GET || m == METHOD_HEAD) { | |
742 | get_or_head_sent = true; | |
743 | } | |
90bd689c | 744 | #endif |
8dceeee3 | 745 | entry->release(); |
c1520b67 AJ |
746 | } |
747 | } | |
748 | } | |
8dceeee3 BR |
749 | |
750 | #if USE_HTCP | |
751 | if (!get_or_head_sent) { | |
752 | neighborsHtcpClear(NULL, url, req, HttpRequestMethod(METHOD_GET), HTCP_CLR_INVALIDATION); | |
753 | } | |
754 | #endif | |
c1520b67 AJ |
755 | } |
756 | ||
26ac0430 | 757 | void |
60745f24 | 758 | clientReplyContext::purgeAllCached() |
759 | { | |
26ac0430 | 760 | const char *url = urlCanonical(http->request); |
90bd689c | 761 | purgeEntriesByUrl(http->request, url); |
35ececa5 | 762 | } |
60745f24 | 763 | |
e6ccf245 | 764 | void |
3b13a8fd | 765 | clientReplyContext::created(StoreEntry *newEntry) |
e6ccf245 | 766 | { |
767 | if (lookingforstore == 1) | |
62e76326 | 768 | purgeFoundGet(newEntry); |
e6ccf245 | 769 | else if (lookingforstore == 2) |
62e76326 | 770 | purgeFoundHead(newEntry); |
e6ccf245 | 771 | else if (lookingforstore == 3) |
62e76326 | 772 | purgeDoPurgeGet(newEntry); |
e6ccf245 | 773 | else if (lookingforstore == 4) |
62e76326 | 774 | purgeDoPurgeHead(newEntry); |
e6ccf245 | 775 | else if (lookingforstore == 5) |
62e76326 | 776 | identifyFoundObject(newEntry); |
e6ccf245 | 777 | } |
778 | ||
779 | void | |
3b13a8fd | 780 | clientReplyContext::purgeFoundGet(StoreEntry *newEntry) |
e6ccf245 | 781 | { |
782 | if (newEntry->isNull()) { | |
62e76326 | 783 | lookingforstore = 2; |
784 | StoreEntry::getPublicByRequestMethod(this, http->request, METHOD_HEAD); | |
e6ccf245 | 785 | } else |
62e76326 | 786 | purgeFoundObject (newEntry); |
e6ccf245 | 787 | } |
788 | ||
789 | void | |
3b13a8fd | 790 | clientReplyContext::purgeFoundHead(StoreEntry *newEntry) |
e6ccf245 | 791 | { |
792 | if (newEntry->isNull()) | |
62e76326 | 793 | purgeDoMissPurge(); |
e6ccf245 | 794 | else |
62e76326 | 795 | purgeFoundObject (newEntry); |
e6ccf245 | 796 | } |
62e76326 | 797 | |
e6ccf245 | 798 | void |
3b13a8fd | 799 | clientReplyContext::purgeFoundObject(StoreEntry *entry) |
e6ccf245 | 800 | { |
801 | assert (entry && !entry->isNull()); | |
e4b9a2f0 | 802 | |
803 | if (EBIT_TEST(entry->flags, ENTRY_SPECIAL)) { | |
804 | http->logType = LOG_TCP_DENIED; | |
cc192b50 | 805 | ErrorState *err = clientBuildError(ERR_ACCESS_DENIED, HTTP_FORBIDDEN, NULL, http->getConn()->peer, http->request); |
e4b9a2f0 | 806 | startError(err); |
807 | return; | |
808 | } | |
809 | ||
62e76326 | 810 | StoreIOBuffer tempBuffer; |
811 | /* Swap in the metadata */ | |
86a2f789 | 812 | http->storeEntry(entry); |
34266cde | 813 | |
3d0ac046 | 814 | http->storeEntry()->lock(); |
3900307b | 815 | http->storeEntry()->createMemObject(http->uri, http->log_uri); |
34266cde | 816 | |
86a2f789 | 817 | http->storeEntry()->mem_obj->method = http->request->method; |
34266cde | 818 | |
86a2f789 | 819 | sc = storeClientListAdd(http->storeEntry(), this); |
34266cde | 820 | |
62e76326 | 821 | http->logType = LOG_TCP_HIT; |
34266cde | 822 | |
62e76326 | 823 | reqofs = 0; |
34266cde | 824 | |
62e76326 | 825 | tempBuffer.offset = http->out.offset; |
34266cde | 826 | |
0655fa4d | 827 | tempBuffer.length = next()->readBuffer.length; |
34266cde | 828 | |
0655fa4d | 829 | tempBuffer.data = next()->readBuffer.data; |
34266cde | 830 | |
86a2f789 | 831 | storeClientCopy(sc, http->storeEntry(), |
0655fa4d | 832 | tempBuffer, CacheHit, this); |
e6ccf245 | 833 | } |
834 | ||
835 | void | |
836 | clientReplyContext::purgeRequest() | |
edce4d98 | 837 | { |
bf8fe701 | 838 | debugs(88, 3, "Config2.onoff.enable_purge = " << |
839 | Config2.onoff.enable_purge); | |
62e76326 | 840 | |
edce4d98 | 841 | if (!Config2.onoff.enable_purge) { |
62e76326 | 842 | http->logType = LOG_TCP_DENIED; |
cc192b50 | 843 | ErrorState *err = clientBuildError(ERR_ACCESS_DENIED, HTTP_FORBIDDEN, NULL, http->getConn()->peer, http->request); |
0655fa4d | 844 | startError(err); |
62e76326 | 845 | return; |
edce4d98 | 846 | } |
62e76326 | 847 | |
edce4d98 | 848 | /* Release both IP cache */ |
cc192b50 | 849 | ipcacheInvalidate(http->request->GetHost()); |
edce4d98 | 850 | |
e6ccf245 | 851 | if (!http->flags.purging) |
62e76326 | 852 | purgeRequestFindObjectToPurge(); |
e6ccf245 | 853 | else |
62e76326 | 854 | purgeDoMissPurge(); |
e6ccf245 | 855 | } |
856 | ||
857 | void | |
858 | clientReplyContext::purgeDoMissPurge() | |
859 | { | |
29b8d8d6 | 860 | http->logType = LOG_TCP_MISS; |
e6ccf245 | 861 | lookingforstore = 3; |
3b13a8fd | 862 | StoreEntry::getPublicByRequestMethod(this,http->request, METHOD_GET); |
e6ccf245 | 863 | } |
864 | ||
865 | void | |
3b13a8fd | 866 | clientReplyContext::purgeDoPurgeGet(StoreEntry *newEntry) |
e6ccf245 | 867 | { |
868 | assert (newEntry); | |
869 | /* Move to new() when that is created */ | |
870 | purgeStatus = HTTP_NOT_FOUND; | |
871 | ||
872 | if (!newEntry->isNull()) { | |
62e76326 | 873 | /* Release the cached URI */ |
bf8fe701 | 874 | debugs(88, 4, "clientPurgeRequest: GET '" << newEntry->url() << "'" ); |
8dceeee3 BR |
875 | #if USE_HTCP |
876 | neighborsHtcpClear(newEntry, NULL, http->request, HttpRequestMethod(METHOD_GET), HTCP_CLR_PURGE); | |
877 | #endif | |
5f33b71d | 878 | newEntry->release(); |
62e76326 | 879 | purgeStatus = HTTP_OK; |
edce4d98 | 880 | } |
62e76326 | 881 | |
e6ccf245 | 882 | lookingforstore = 4; |
3b13a8fd | 883 | StoreEntry::getPublicByRequestMethod(this, http->request, METHOD_HEAD); |
e6ccf245 | 884 | } |
885 | ||
886 | void | |
3b13a8fd | 887 | clientReplyContext::purgeDoPurgeHead(StoreEntry *newEntry) |
e6ccf245 | 888 | { |
4fc0ac76 | 889 | if (newEntry && !newEntry->isNull()) { |
bf8fe701 | 890 | debugs(88, 4, "clientPurgeRequest: HEAD '" << newEntry->url() << "'" ); |
8dceeee3 BR |
891 | #if USE_HTCP |
892 | neighborsHtcpClear(newEntry, NULL, http->request, HttpRequestMethod(METHOD_HEAD), HTCP_CLR_PURGE); | |
893 | #endif | |
5f33b71d | 894 | newEntry->release(); |
62e76326 | 895 | purgeStatus = HTTP_OK; |
edce4d98 | 896 | } |
62e76326 | 897 | |
edce4d98 | 898 | /* And for Vary, release the base URI if none of the headers was included in the request */ |
62e76326 | 899 | |
edce4d98 | 900 | if (http->request->vary_headers |
62e76326 | 901 | && !strstr(http->request->vary_headers, "=")) { |
902 | StoreEntry *entry = storeGetPublic(urlCanonical(http->request), METHOD_GET); | |
903 | ||
904 | if (entry) { | |
bf8fe701 | 905 | debugs(88, 4, "clientPurgeRequest: Vary GET '" << entry->url() << "'" ); |
8dceeee3 BR |
906 | #if USE_HTCP |
907 | neighborsHtcpClear(entry, NULL, http->request, HttpRequestMethod(METHOD_GET), HTCP_CLR_PURGE); | |
908 | #endif | |
5f33b71d | 909 | entry->release(); |
62e76326 | 910 | purgeStatus = HTTP_OK; |
911 | } | |
912 | ||
913 | entry = storeGetPublic(urlCanonical(http->request), METHOD_HEAD); | |
914 | ||
915 | if (entry) { | |
bf8fe701 | 916 | debugs(88, 4, "clientPurgeRequest: Vary HEAD '" << entry->url() << "'" ); |
8dceeee3 BR |
917 | #if USE_HTCP |
918 | neighborsHtcpClear(entry, NULL, http->request, HttpRequestMethod(METHOD_HEAD), HTCP_CLR_PURGE); | |
919 | #endif | |
5f33b71d | 920 | entry->release(); |
62e76326 | 921 | purgeStatus = HTTP_OK; |
922 | } | |
edce4d98 | 923 | } |
62e76326 | 924 | |
edce4d98 | 925 | /* |
926 | * Make a new entry to hold the reply to be written | |
927 | * to the client. | |
928 | */ | |
528b2c61 | 929 | /* FIXME: This doesn't need to go through the store. Simply |
930 | * push down the client chain | |
931 | */ | |
0655fa4d | 932 | createStoreEntry(http->request->method, request_flags()); |
62e76326 | 933 | |
0655fa4d | 934 | triggerInitialStoreRead(); |
62e76326 | 935 | |
7dc5f514 | 936 | HttpReply *rep = new HttpReply; |
62e76326 | 937 | |
450e0c10 | 938 | HttpVersion version(1,0); |
62e76326 | 939 | |
7dc5f514 | 940 | rep->setHeaders(version, purgeStatus, NULL, NULL, 0, 0, -1); |
62e76326 | 941 | |
7dc5f514 | 942 | http->storeEntry()->replaceHttpReply(rep); |
62e76326 | 943 | |
86a2f789 | 944 | http->storeEntry()->complete(); |
edce4d98 | 945 | } |
946 | ||
947 | void | |
0655fa4d | 948 | clientReplyContext::traceReply(clientStreamNode * node) |
edce4d98 | 949 | { |
e6ccf245 | 950 | clientStreamNode *next = (clientStreamNode *)node->node.next->data; |
528b2c61 | 951 | StoreIOBuffer tempBuffer; |
0655fa4d | 952 | assert(http->request->max_forwards == 0); |
953 | createStoreEntry(http->request->method, request_flags()); | |
954 | tempBuffer.offset = next->readBuffer.offset + headers_sz; | |
c8be6d7b | 955 | tempBuffer.length = next->readBuffer.length; |
956 | tempBuffer.data = next->readBuffer.data; | |
86a2f789 | 957 | storeClientCopy(sc, http->storeEntry(), |
0655fa4d | 958 | tempBuffer, SendMoreData, this); |
d88e3c49 | 959 | http->storeEntry()->releaseRequest(); |
3900307b | 960 | http->storeEntry()->buffer(); |
7dc5f514 | 961 | HttpReply *rep = new HttpReply; |
450e0c10 | 962 | HttpVersion version(1,0); |
06a5ae20 | 963 | rep->setHeaders(version, HTTP_OK, NULL, "text/plain", |
5cafad19 | 964 | http->request->prefixLen(), 0, squid_curtime); |
db237875 | 965 | http->storeEntry()->replaceHttpReply(rep); |
5cafad19 | 966 | http->request->swapOut(http->storeEntry()); |
86a2f789 | 967 | http->storeEntry()->complete(); |
edce4d98 | 968 | } |
969 | ||
970 | #define SENDING_BODY 0 | |
971 | #define SENDING_HDRSONLY 1 | |
972 | int | |
0655fa4d | 973 | clientReplyContext::checkTransferDone() |
edce4d98 | 974 | { |
86a2f789 | 975 | StoreEntry *entry = http->storeEntry(); |
62e76326 | 976 | |
edce4d98 | 977 | if (entry == NULL) |
62e76326 | 978 | return 0; |
979 | ||
980 | /* | |
edce4d98 | 981 | * For now, 'done_copying' is used for special cases like |
982 | * Range and HEAD requests. | |
983 | */ | |
0655fa4d | 984 | if (http->flags.done_copying) |
62e76326 | 985 | return 1; |
986 | ||
edce4d98 | 987 | /* |
988 | * Handle STORE_OK objects. | |
989 | * objectLen(entry) will be set proprely. | |
26ac0430 | 990 | * RC: Does objectLen(entry) include the Headers? |
0e3be1ea | 991 | * RC: Yes. |
edce4d98 | 992 | */ |
993 | if (entry->store_status == STORE_OK) { | |
0655fa4d | 994 | return storeOKTransferDone(); |
e39b9382 | 995 | } else { |
0655fa4d | 996 | return storeNotOKTransferDone(); |
edce4d98 | 997 | } |
e39b9382 | 998 | } |
999 | ||
1000 | int | |
1001 | clientReplyContext::storeOKTransferDone() const | |
1002 | { | |
47f6e231 | 1003 | if (http->out.offset >= http->storeEntry()->objectLen() - headers_sz) { |
26ac0430 AJ |
1004 | debugs(88,3,HERE << "storeOKTransferDone " << |
1005 | " out.offset=" << http->out.offset << | |
1006 | " objectLen()=" << http->storeEntry()->objectLen() << | |
1007 | " headers_sz=" << headers_sz); | |
62e76326 | 1008 | return 1; |
47f6e231 | 1009 | } |
62e76326 | 1010 | |
e39b9382 | 1011 | return 0; |
1012 | } | |
1013 | ||
1014 | int | |
1015 | clientReplyContext::storeNotOKTransferDone() const | |
1016 | { | |
edce4d98 | 1017 | /* |
1018 | * Now, handle STORE_PENDING objects | |
1019 | */ | |
86a2f789 | 1020 | MemObject *mem = http->storeEntry()->mem_obj; |
edce4d98 | 1021 | assert(mem != NULL); |
1022 | assert(http->request != NULL); | |
0e3be1ea | 1023 | /* mem->reply was wrong because it uses the UPSTREAM header length!!! */ |
0353e724 | 1024 | HttpReply const *reply = mem->getReply(); |
62e76326 | 1025 | |
e39b9382 | 1026 | if (headers_sz == 0) |
62e76326 | 1027 | /* haven't found end of headers yet */ |
1028 | return 0; | |
e39b9382 | 1029 | |
1030 | int sending = SENDING_BODY; | |
62e76326 | 1031 | |
e39b9382 | 1032 | if (reply->sline.status == HTTP_NO_CONTENT || |
62e76326 | 1033 | reply->sline.status == HTTP_NOT_MODIFIED || |
1034 | reply->sline.status < HTTP_OK || | |
1035 | http->request->method == METHOD_HEAD) | |
1036 | sending = SENDING_HDRSONLY; | |
1037 | ||
edce4d98 | 1038 | /* |
1039 | * Figure out how much data we are supposed to send. | |
1040 | * If we are sending a body and we don't have a content-length, | |
1041 | * then we must wait for the object to become STORE_OK. | |
1042 | */ | |
0e3be1ea | 1043 | if (reply->content_length < 0) |
62e76326 | 1044 | return 0; |
e39b9382 | 1045 | |
47f6e231 | 1046 | int64_t expectedLength = reply->content_length + http->out.headers_sz; |
62e76326 | 1047 | |
e39b9382 | 1048 | if (http->out.size < expectedLength) |
62e76326 | 1049 | return 0; |
47f6e231 | 1050 | else { |
26ac0430 AJ |
1051 | debugs(88,3,HERE << "storeNotOKTransferDone " << |
1052 | " out.size=" << http->out.size << | |
1053 | " expectedLength=" << expectedLength); | |
62e76326 | 1054 | return 1; |
47f6e231 | 1055 | } |
edce4d98 | 1056 | } |
1057 | ||
1058 | ||
edce4d98 | 1059 | /* A write has completed, what is the next status based on the |
1060 | * canonical request data? | |
1061 | * 1 something is wrong | |
1062 | * 0 nothing is wrong. | |
1063 | * | |
1064 | */ | |
1065 | int | |
59a1efb2 | 1066 | clientHttpRequestStatus(int fd, ClientHttpRequest const *http) |
edce4d98 | 1067 | { |
47f6e231 | 1068 | #if SIZEOF_INT64_T == 4 |
edce4d98 | 1069 | if (http->out.size > 0x7FFF0000) { |
47f6e231 | 1070 | debugs(88, 1, "WARNING: closing FD " << fd << " to prevent out.size counter overflow"); |
cc192b50 | 1071 | debugs(88, 1, "\tclient " << http->getConn()->peer); |
47f6e231 | 1072 | debugs(88, 1, "\treceived " << http->out.size << " bytes"); |
1073 | debugs(88, 1, "\tURI " << http->log_uri); | |
62e76326 | 1074 | return 1; |
edce4d98 | 1075 | } |
62e76326 | 1076 | |
edce4d98 | 1077 | #endif |
47f6e231 | 1078 | #if SIZEOF_INT64_T == 4 |
edce4d98 | 1079 | if (http->out.offset > 0x7FFF0000) { |
3ec12e4a | 1080 | debugs(88, 1, "WARNING: closing FD " << fd < " to prevent out.offset counter overflow"); |
cc192b50 | 1081 | debugs(88, 1, "\tclient " << http->getConn()->peer); |
3ec12e4a | 1082 | debugs(88, 1, "\treceived " << http->out.size << " bytes, offset " << http->out.offset); |
1083 | debugs(88, 1, "\tURI " << http->log_uri); | |
62e76326 | 1084 | return 1; |
edce4d98 | 1085 | } |
62e76326 | 1086 | |
edce4d98 | 1087 | #endif |
1088 | return 0; | |
1089 | } | |
1090 | ||
62e76326 | 1091 | /* Preconditions: |
edce4d98 | 1092 | * *http is a valid structure. |
1093 | * fd is either -1, or an open fd. | |
1094 | * | |
1095 | * TODO: enumify this | |
1096 | * | |
1097 | * This function is used by any http request sink, to determine the status | |
1098 | * of the object. | |
1099 | */ | |
1100 | clientStream_status_t | |
59a1efb2 | 1101 | clientReplyStatus(clientStreamNode * aNode, ClientHttpRequest * http) |
edce4d98 | 1102 | { |
0655fa4d | 1103 | clientReplyContext *context = dynamic_cast<clientReplyContext *>(aNode->data.getRaw()); |
1104 | assert (context); | |
1105 | assert (context->http == http); | |
1106 | return context->replyStatus(); | |
1107 | } | |
1108 | ||
1109 | clientStream_status_t | |
1110 | clientReplyContext::replyStatus() | |
1111 | { | |
edce4d98 | 1112 | int done; |
1113 | /* Here because lower nodes don't need it */ | |
62e76326 | 1114 | |
3daaed1a | 1115 | if (http->storeEntry() == NULL) { |
1116 | debugs(88, 5, "clientReplyStatus: no storeEntry"); | |
62e76326 | 1117 | return STREAM_FAILED; /* yuck, but what can we do? */ |
3daaed1a | 1118 | } |
62e76326 | 1119 | |
3daaed1a | 1120 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) { |
62e76326 | 1121 | /* TODO: Could upstream read errors (result.flags.error) be |
1122 | * lost, and result in undersize requests being considered | |
1123 | * complete. Should we tcp reset such connections ? | |
1124 | */ | |
3daaed1a | 1125 | debugs(88, 5, "clientReplyStatus: aborted storeEntry"); |
62e76326 | 1126 | return STREAM_FAILED; |
3daaed1a | 1127 | } |
62e76326 | 1128 | |
0655fa4d | 1129 | if ((done = checkTransferDone()) != 0 || flags.complete) { |
bf8fe701 | 1130 | debugs(88, 5, "clientReplyStatus: transfer is DONE"); |
62e76326 | 1131 | /* Ok we're finished, but how? */ |
1132 | ||
06a5ae20 | 1133 | if (http->storeEntry()->getReply()->bodySize(http->request->method) < 0) { |
bf8fe701 | 1134 | debugs(88, 5, "clientReplyStatus: closing, content_length < 0"); |
62e76326 | 1135 | return STREAM_FAILED; |
1136 | } | |
1137 | ||
1138 | if (!done) { | |
bf8fe701 | 1139 | debugs(88, 5, "clientReplyStatus: closing, !done, but read 0 bytes"); |
62e76326 | 1140 | return STREAM_FAILED; |
1141 | } | |
1142 | ||
0655fa4d | 1143 | if (!http->gotEnough()) { |
bf8fe701 | 1144 | debugs(88, 5, "clientReplyStatus: client didn't get all it expected"); |
62e76326 | 1145 | return STREAM_UNPLANNED_COMPLETE; |
1146 | } | |
1147 | ||
1148 | if (http->request->flags.proxy_keepalive) { | |
bf8fe701 | 1149 | debugs(88, 5, "clientReplyStatus: stream complete and can keepalive"); |
62e76326 | 1150 | return STREAM_COMPLETE; |
1151 | } | |
1152 | ||
bf8fe701 | 1153 | debugs(88, 5, "clientReplyStatus: stream was not expected to complete!"); |
62e76326 | 1154 | return STREAM_UNPLANNED_COMPLETE; |
edce4d98 | 1155 | } |
62e76326 | 1156 | |
16611143 | 1157 | // XXX: Should this be checked earlier? We could return above w/o checking. |
1158 | if (reply->receivedBodyTooLarge(*http->request, http->out.offset - 4096)) { | |
b51aec66 | 1159 | /* 4096 is a margin for the HTTP headers included in out.offset */ |
bf8fe701 | 1160 | debugs(88, 5, "clientReplyStatus: client reply body is too large"); |
62e76326 | 1161 | return STREAM_FAILED; |
0e3be1ea | 1162 | } |
62e76326 | 1163 | |
edce4d98 | 1164 | return STREAM_NONE; |
1165 | } | |
1166 | ||
62e76326 | 1167 | /* Responses with no body will not have a content-type header, |
edce4d98 | 1168 | * which breaks the rep_mime_type acl, which |
1169 | * coincidentally, is the most common acl for reply access lists. | |
1170 | * A better long term fix for this is to allow acl matchs on the various | |
26ac0430 AJ |
1171 | * status codes, and then supply a default ruleset that puts these |
1172 | * codes before any user defines access entries. That way the user | |
edce4d98 | 1173 | * can choose to block these responses where appropriate, but won't get |
1174 | * mysterious breakages. | |
1175 | */ | |
0655fa4d | 1176 | bool |
1177 | clientReplyContext::alwaysAllowResponse(http_status sline) const | |
edce4d98 | 1178 | { |
4ef4b952 | 1179 | bool result; |
1180 | ||
edce4d98 | 1181 | switch (sline) { |
62e76326 | 1182 | |
edce4d98 | 1183 | case HTTP_CONTINUE: |
62e76326 | 1184 | |
edce4d98 | 1185 | case HTTP_SWITCHING_PROTOCOLS: |
62e76326 | 1186 | |
edce4d98 | 1187 | case HTTP_PROCESSING: |
62e76326 | 1188 | |
edce4d98 | 1189 | case HTTP_NO_CONTENT: |
62e76326 | 1190 | |
edce4d98 | 1191 | case HTTP_NOT_MODIFIED: |
4ef4b952 | 1192 | result = true; |
62e76326 | 1193 | break; |
1194 | ||
edce4d98 | 1195 | default: |
4ef4b952 | 1196 | result = false; |
edce4d98 | 1197 | } |
4ef4b952 | 1198 | |
1199 | return result; | |
edce4d98 | 1200 | } |
1201 | ||
1202 | /* | |
1203 | * filters out unwanted entries from original reply header | |
1204 | * adds extra entries if we have more info than origin server | |
1205 | * adds Squid specific entries | |
1206 | */ | |
0655fa4d | 1207 | void |
1208 | clientReplyContext::buildReplyHeader() | |
edce4d98 | 1209 | { |
7dc5f514 | 1210 | HttpHeader *hdr = &reply->header; |
c8be6d7b | 1211 | int is_hit = logTypeIsATcpHit(http->logType); |
190154cf | 1212 | HttpRequest *request = http->request; |
edce4d98 | 1213 | #if DONT_FILTER_THESE |
1214 | /* but you might want to if you run Squid as an HTTP accelerator */ | |
a9925b40 | 1215 | /* hdr->delById(HDR_ACCEPT_RANGES); */ |
1216 | hdr->delById(HDR_ETAG); | |
edce4d98 | 1217 | #endif |
62e76326 | 1218 | |
edce4d98 | 1219 | if (is_hit) |
a9925b40 | 1220 | hdr->delById(HDR_SET_COOKIE); |
62e76326 | 1221 | |
26ac0430 | 1222 | // if there is not configured a peer proxy with login=PASS option enabled |
dcf3665b AJ |
1223 | // remove the Proxy-Authenticate header |
1224 | if ( !(request->peer_login && strcmp(request->peer_login,"PASS") ==0)) | |
26ac0430 | 1225 | reply->header.delById(HDR_PROXY_AUTHENTICATE); |
dcf3665b | 1226 | |
2cdeea82 | 1227 | reply->header.removeHopByHopEntries(); |
62e76326 | 1228 | |
1229 | // if (request->range) | |
7dc5f514 | 1230 | // clientBuildRangeHeader(http, reply); |
edce4d98 | 1231 | /* |
1232 | * Add a estimated Age header on cache hits. | |
1233 | */ | |
1234 | if (is_hit) { | |
62e76326 | 1235 | /* |
1236 | * Remove any existing Age header sent by upstream caches | |
1237 | * (note that the existing header is passed along unmodified | |
1238 | * on cache misses) | |
1239 | */ | |
a9925b40 | 1240 | hdr->delById(HDR_AGE); |
62e76326 | 1241 | /* |
1242 | * This adds the calculated object age. Note that the details of the | |
1243 | * age calculation is performed by adjusting the timestamp in | |
3900307b | 1244 | * StoreEntry::timestampsSet(), not here. |
62e76326 | 1245 | * |
1246 | * BROWSER WORKAROUND: IE sometimes hangs when receiving a 0 Age | |
1247 | * header, so don't use it unless there is a age to report. Please | |
1248 | * note that Age is only used to make a conservative estimation of | |
1249 | * the objects age, so a Age: 0 header does not add any useful | |
1250 | * information to the reply in any case. | |
1251 | */ | |
1252 | ||
86a2f789 | 1253 | if (NULL == http->storeEntry()) |
62e76326 | 1254 | (void) 0; |
86a2f789 | 1255 | else if (http->storeEntry()->timestamp < 0) |
62e76326 | 1256 | (void) 0; |
bbe58ab5 | 1257 | |
1258 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_SPECIAL)) { | |
a9925b40 | 1259 | hdr->delById(HDR_DATE); |
1260 | hdr->insertTime(HDR_DATE, squid_curtime); | |
bbe58ab5 | 1261 | } else if (http->storeEntry()->timestamp < squid_curtime) { |
a9925b40 | 1262 | hdr->putInt(HDR_AGE, |
1263 | squid_curtime - http->storeEntry()->timestamp); | |
62e76326 | 1264 | /* Signal old objects. NB: rfc 2616 is not clear, |
1265 | * by implication, on whether we should do this to all | |
1266 | * responses, or only cache hits. | |
1267 | * 14.46 states it ONLY applys for heuristically caclulated | |
1268 | * freshness values, 13.2.4 doesn't specify the same limitation. | |
1269 | * We interpret RFC 2616 under the combination. | |
1270 | */ | |
1271 | /* TODO: if maxage or s-maxage is present, don't do this */ | |
1272 | ||
86a2f789 | 1273 | if (squid_curtime - http->storeEntry()->timestamp >= 86400) { |
62e76326 | 1274 | char tempbuf[512]; |
1275 | snprintf (tempbuf, sizeof(tempbuf), "%s %s %s", | |
1276 | "113", ThisCache, | |
1277 | "This cache hit is still fresh and more than 1 day old"); | |
a9925b40 | 1278 | hdr->putStr(HDR_WARNING, tempbuf); |
62e76326 | 1279 | } |
1280 | } | |
528b2c61 | 1281 | |
edce4d98 | 1282 | } |
62e76326 | 1283 | |
0bd9aa82 | 1284 | /* Filter unproxyable authentication types */ |
dcf3665b | 1285 | |
ddd31ed3 | 1286 | if (http->logType != LOG_TCP_DENIED && |
d67acb4e | 1287 | hdr->has(HDR_WWW_AUTHENTICATE)) { |
62e76326 | 1288 | HttpHeaderPos pos = HttpHeaderInitPos; |
1289 | HttpHeaderEntry *e; | |
1290 | ||
26ac0430 | 1291 | int connection_auth_blocked = 0; |
a9925b40 | 1292 | while ((e = hdr->getEntry(&pos))) { |
d67acb4e | 1293 | if (e->id == HDR_WWW_AUTHENTICATE) { |
30abd221 | 1294 | const char *value = e->value.buf(); |
62e76326 | 1295 | |
1296 | if ((strncasecmp(value, "NTLM", 4) == 0 && | |
1297 | (value[4] == '\0' || value[4] == ' ')) | |
1298 | || | |
1299 | (strncasecmp(value, "Negotiate", 9) == 0 && | |
d67acb4e | 1300 | (value[9] == '\0' || value[9] == ' ')) |
26ac0430 AJ |
1301 | || |
1302 | (strncasecmp(value, "Kerberos", 8) == 0 && | |
1303 | (value[8] == '\0' || value[8] == ' '))) { | |
1304 | if (request->flags.connection_auth_disabled) { | |
1305 | hdr->delAt(pos, connection_auth_blocked); | |
d67acb4e AJ |
1306 | continue; |
1307 | } | |
26ac0430 AJ |
1308 | request->flags.must_keepalive = 1; |
1309 | if (!request->flags.accelerated && !request->flags.intercepted) { | |
d67acb4e | 1310 | httpHeaderPutStrf(hdr, HDR_PROXY_SUPPORT, "Session-Based-Authentication"); |
26ac0430 AJ |
1311 | /* |
1312 | We send "[Proxy-]Connection: Proxy-Support" header to mark | |
1313 | Proxy-Support as a hop-by-hop header for intermediaries that do not | |
1314 | understand the semantics of this header. The RFC should have included | |
1315 | this recommendation. | |
1316 | */ | |
d67acb4e AJ |
1317 | httpHeaderPutStrf(hdr, HDR_CONNECTION, "Proxy-support"); |
1318 | } | |
1319 | break; | |
26ac0430 | 1320 | } |
62e76326 | 1321 | } |
1322 | } | |
d67acb4e AJ |
1323 | |
1324 | if (connection_auth_blocked) | |
ba9fb01d | 1325 | hdr->refreshMask(); |
0bd9aa82 | 1326 | } |
62e76326 | 1327 | |
edce4d98 | 1328 | /* Handle authentication headers */ |
26ac0430 AJ |
1329 | if (http->logType == LOG_TCP_DENIED && |
1330 | ( reply->sline.status == HTTP_PROXY_AUTHENTICATION_REQUIRED || | |
1331 | reply->sline.status == HTTP_UNAUTHORIZED) | |
1332 | ) { | |
1333 | /* Add authentication header */ | |
1334 | /*! \todo alter errorstate to be accel on|off aware. The 0 on the next line | |
1335 | * depends on authenticate behaviour: all schemes to date send no extra | |
1336 | * data on 407/401 responses, and do not check the accel state on 401/407 | |
1337 | * responses | |
1338 | */ | |
1339 | authenticateFixHeader(reply, request->auth_user_request, request, 0, 1); | |
1340 | } else if (request->auth_user_request) | |
7dc5f514 | 1341 | authenticateFixHeader(reply, request->auth_user_request, request, |
62e76326 | 1342 | http->flags.accel, 0); |
1343 | ||
edce4d98 | 1344 | /* Append X-Cache */ |
1345 | httpHeaderPutStrf(hdr, HDR_X_CACHE, "%s from %s", | |
62e76326 | 1346 | is_hit ? "HIT" : "MISS", getMyHostname()); |
1347 | ||
edce4d98 | 1348 | #if USE_CACHE_DIGESTS |
1349 | /* Append X-Cache-Lookup: -- temporary hack, to be removed @?@ @?@ */ | |
1350 | httpHeaderPutStrf(hdr, HDR_X_CACHE_LOOKUP, "%s from %s:%d", | |
0655fa4d | 1351 | lookup_type ? lookup_type : "NONE", |
62e76326 | 1352 | getMyHostname(), getMyPort()); |
1353 | ||
edce4d98 | 1354 | #endif |
62e76326 | 1355 | |
f529bb20 | 1356 | /* Check whether we should send keep-alive */ |
58850d15 | 1357 | if (!Config.onoff.error_pconns && reply->sline.status >= 400 && !request->flags.must_keepalive) { |
bf8fe701 | 1358 | debugs(33, 3, "clientBuildReplyHeader: Error, don't keep-alive"); |
58850d15 | 1359 | request->flags.proxy_keepalive = 0; |
1360 | } | |
17b57873 AJ |
1361 | else if (!Config.onoff.client_pconns && !request->flags.must_keepalive) { |
1362 | debugs(33, 2, "clientBuildReplyHeader: Connection Keep-Alive not requested by admin or client"); | |
f5e45ad8 | 1363 | request->flags.proxy_keepalive = 0; |
17b57873 AJ |
1364 | } |
1365 | else if (request->flags.proxy_keepalive && shutting_down) { | |
f529bb20 | 1366 | debugs(88, 3, "clientBuildReplyHeader: Shutting down, don't keep-alive."); |
1367 | request->flags.proxy_keepalive = 0; | |
1368 | } | |
17b57873 | 1369 | else if (request->flags.connection_auth && !reply->keep_alive) { |
26ac0430 AJ |
1370 | debugs(33, 2, "clientBuildReplyHeader: Connection oriented auth but server side non-persistent"); |
1371 | request->flags.proxy_keepalive = 0; | |
d67acb4e | 1372 | } |
17b57873 AJ |
1373 | else if (reply->bodySize(request->method) < 0) { |
1374 | debugs(88, 3, "clientBuildReplyHeader: can't keep-alive, unknown body size" ); | |
1375 | request->flags.proxy_keepalive = 0; | |
1376 | } | |
1377 | else if (fdUsageHigh()&& !request->flags.must_keepalive) { | |
1378 | debugs(88, 3, "clientBuildReplyHeader: Not many unused FDs, can't keep-alive"); | |
1379 | request->flags.proxy_keepalive = 0; | |
1380 | } | |
d67acb4e | 1381 | |
f529bb20 | 1382 | |
4dea3fdd | 1383 | /* Append VIA */ |
92caea77 | 1384 | if (Config.onoff.via) { |
62e76326 | 1385 | LOCAL_ARRAY(char, bbuf, MAX_URL + 32); |
30abd221 | 1386 | String strVia; |
26ac0430 | 1387 | hdr->getList(HDR_VIA, &strVia); |
62e76326 | 1388 | snprintf(bbuf, sizeof(bbuf), "%d.%d %s", |
7dc5f514 | 1389 | reply->sline.version.major, |
1390 | reply->sline.version.minor, | |
62e76326 | 1391 | ThisCache); |
1392 | strListAdd(&strVia, bbuf, ','); | |
a9925b40 | 1393 | hdr->delById(HDR_VIA); |
30abd221 | 1394 | hdr->putStr(HDR_VIA, strVia.buf()); |
c8be6d7b | 1395 | } |
edce4d98 | 1396 | /* Signal keep-alive if needed */ |
a9925b40 | 1397 | hdr->putStr(http->flags.accel ? HDR_CONNECTION : HDR_PROXY_CONNECTION, |
1398 | request->flags.proxy_keepalive ? "keep-alive" : "close"); | |
62e76326 | 1399 | |
edce4d98 | 1400 | #if ADD_X_REQUEST_URI |
1401 | /* | |
1402 | * Knowing the URI of the request is useful when debugging persistent | |
1403 | * connections in a client; we cannot guarantee the order of http headers, | |
1404 | * but X-Request-URI is likely to be the very last header to ease use from a | |
1405 | * debugger [hdr->entries.count-1]. | |
1406 | */ | |
a9925b40 | 1407 | hdr->putStr(HDR_X_REQUEST_URI, |
1408 | http->memOjbect()->url ? http->memObject()->url : http->uri); | |
62e76326 | 1409 | |
edce4d98 | 1410 | #endif |
62e76326 | 1411 | |
8c01ada0 | 1412 | httpHdrMangleList(hdr, request, ROR_REPLY); |
edce4d98 | 1413 | } |
1414 | ||
1415 | ||
0655fa4d | 1416 | void |
b297bcd0 | 1417 | clientReplyContext::cloneReply() |
edce4d98 | 1418 | { |
7dc5f514 | 1419 | assert(reply == NULL); |
0655fa4d | 1420 | |
b297bcd0 | 1421 | HttpReply *rep = http->storeEntry()->getReply()->clone(); |
7dc5f514 | 1422 | |
1423 | reply = HTTPMSGLOCK(rep); | |
1424 | ||
0655fa4d | 1425 | /* enforce 1.0 reply version */ |
7dc5f514 | 1426 | reply->sline.version = HttpVersion(1,0); |
0655fa4d | 1427 | |
1428 | /* do header conversions */ | |
1429 | buildReplyHeader(); | |
edce4d98 | 1430 | } |
1431 | ||
e6ccf245 | 1432 | void |
1433 | clientReplyContext::identifyStoreObject() | |
edce4d98 | 1434 | { |
190154cf | 1435 | HttpRequest *r = http->request; |
62e76326 | 1436 | |
e6ccf245 | 1437 | if (r->flags.cachable || r->flags.internal) { |
62e76326 | 1438 | lookingforstore = 5; |
1439 | StoreEntry::getPublicByRequest (this, r); | |
559da936 | 1440 | } else { |
62e76326 | 1441 | identifyFoundObject (NullStoreEntry::getInstance()); |
559da936 | 1442 | } |
e6ccf245 | 1443 | } |
1444 | ||
7d5f62a4 AJ |
1445 | /** |
1446 | * Check state of the current StoreEntry object. | |
1447 | * to see if we can determine the final status of the request. | |
1448 | */ | |
e6ccf245 | 1449 | void |
1450 | clientReplyContext::identifyFoundObject(StoreEntry *newEntry) | |
1451 | { | |
1452 | StoreEntry *e = newEntry; | |
190154cf | 1453 | HttpRequest *r = http->request; |
62e76326 | 1454 | |
7d5f62a4 | 1455 | /** \item If the entry received isNull() then we ignore it. */ |
e6ccf245 | 1456 | if (e->isNull()) { |
86a2f789 | 1457 | http->storeEntry(NULL); |
e6ccf245 | 1458 | } else { |
86a2f789 | 1459 | http->storeEntry(e); |
e6ccf245 | 1460 | } |
62e76326 | 1461 | |
86a2f789 | 1462 | e = http->storeEntry(); |
a12a049a | 1463 | |
7d5f62a4 AJ |
1464 | /* Release IP-cache entries on reload */ |
1465 | /** \item If the request has no-cache flag set or some no_cache HACK in operation we | |
1466 | * 'invalidate' the cached IP entries for this request ??? | |
1467 | */ | |
a12a049a | 1468 | if (r->flags.nocache) { |
1469 | ||
1470 | #if USE_DNSSERVERS | |
62e76326 | 1471 | |
cc192b50 | 1472 | ipcacheInvalidate(r->GetHost()); |
62e76326 | 1473 | |
a12a049a | 1474 | #else |
1475 | ||
cc192b50 | 1476 | ipcacheInvalidateNegative(r->GetHost()); |
a12a049a | 1477 | |
1478 | #endif /* USE_DNSSERVERS */ | |
1479 | ||
1480 | } | |
1481 | ||
edce4d98 | 1482 | #if HTTP_VIOLATIONS |
62e76326 | 1483 | |
a12a049a | 1484 | else if (r->flags.nocache_hack) { |
1485 | ||
1486 | #if USE_DNSSERVERS | |
1487 | ||
cc192b50 | 1488 | ipcacheInvalidate(r->GetHost()); |
62e76326 | 1489 | |
a12a049a | 1490 | #else |
1491 | ||
cc192b50 | 1492 | ipcacheInvalidateNegative(r->GetHost()); |
a12a049a | 1493 | |
1494 | #endif /* USE_DNSSERVERS */ | |
1495 | ||
1496 | } | |
1497 | ||
1498 | #endif /* HTTP_VIOLATIONS */ | |
edce4d98 | 1499 | #if USE_CACHE_DIGESTS |
62e76326 | 1500 | |
86a2f789 | 1501 | lookup_type = http->storeEntry() ? "HIT" : "MISS"; |
62e76326 | 1502 | |
edce4d98 | 1503 | #endif |
62e76326 | 1504 | |
86a2f789 | 1505 | if (NULL == http->storeEntry()) { |
7d5f62a4 AJ |
1506 | /** \item If no StoreEntry object is current assume this object isn't in the cache set MISS*/ |
1507 | debugs(85, 3, "clientProcessRequest2: StoreEntry is NULL - MISS"); | |
62e76326 | 1508 | http->logType = LOG_TCP_MISS; |
1509 | doGetMoreData(); | |
1510 | return; | |
edce4d98 | 1511 | } |
62e76326 | 1512 | |
edce4d98 | 1513 | if (Config.onoff.offline) { |
7d5f62a4 | 1514 | /** \item If we are running in offline mode set to HIT */ |
bf8fe701 | 1515 | debugs(85, 3, "clientProcessRequest2: offline HIT"); |
62e76326 | 1516 | http->logType = LOG_TCP_HIT; |
1517 | doGetMoreData(); | |
1518 | return; | |
edce4d98 | 1519 | } |
62e76326 | 1520 | |
edce4d98 | 1521 | if (http->redirect.status) { |
7d5f62a4 AJ |
1522 | /** \item If redirection status is True force this to be a MISS */ |
1523 | debugs(85, 3, "clientProcessRequest2: redirectStatus forced StoreEntry to NULL - MISS"); | |
86a2f789 | 1524 | http->storeEntry(NULL); |
62e76326 | 1525 | http->logType = LOG_TCP_MISS; |
1526 | doGetMoreData(); | |
1527 | return; | |
edce4d98 | 1528 | } |
62e76326 | 1529 | |
3900307b | 1530 | if (!e->validToSend()) { |
bf8fe701 | 1531 | debugs(85, 3, "clientProcessRequest2: !storeEntryValidToSend MISS" ); |
86a2f789 | 1532 | http->storeEntry(NULL); |
62e76326 | 1533 | http->logType = LOG_TCP_MISS; |
1534 | doGetMoreData(); | |
1535 | return; | |
edce4d98 | 1536 | } |
62e76326 | 1537 | |
edce4d98 | 1538 | if (EBIT_TEST(e->flags, ENTRY_SPECIAL)) { |
62e76326 | 1539 | /* Special entries are always hits, no matter what the client says */ |
bf8fe701 | 1540 | debugs(85, 3, "clientProcessRequest2: ENTRY_SPECIAL HIT"); |
62e76326 | 1541 | http->logType = LOG_TCP_HIT; |
1542 | doGetMoreData(); | |
1543 | return; | |
edce4d98 | 1544 | } |
62e76326 | 1545 | |
edce4d98 | 1546 | if (r->flags.nocache) { |
bf8fe701 | 1547 | debugs(85, 3, "clientProcessRequest2: no-cache REFRESH MISS"); |
86a2f789 | 1548 | http->storeEntry(NULL); |
62e76326 | 1549 | http->logType = LOG_TCP_CLIENT_REFRESH_MISS; |
1550 | doGetMoreData(); | |
1551 | return; | |
edce4d98 | 1552 | } |
62e76326 | 1553 | |
bf8fe701 | 1554 | debugs(85, 3, "clientProcessRequest2: default HIT"); |
e6ccf245 | 1555 | http->logType = LOG_TCP_HIT; |
1556 | doGetMoreData(); | |
edce4d98 | 1557 | } |
1558 | ||
1559 | /* Request more data from the store for the client Stream | |
1560 | * This is *the* entry point to this module. | |
1561 | * | |
1562 | * Preconditions: | |
1563 | * This is the head of the list. | |
1564 | * There is at least one more node. | |
1565 | * data context is not null | |
1566 | */ | |
1567 | void | |
59a1efb2 | 1568 | clientGetMoreData(clientStreamNode * aNode, ClientHttpRequest * http) |
edce4d98 | 1569 | { |
edce4d98 | 1570 | /* Test preconditions */ |
e6ccf245 | 1571 | assert(aNode != NULL); |
1572 | assert(cbdataReferenceValid(aNode)); | |
e6ccf245 | 1573 | assert(aNode->node.prev == NULL); |
1574 | assert(aNode->node.next != NULL); | |
0655fa4d | 1575 | clientReplyContext *context = dynamic_cast<clientReplyContext *>(aNode->data.getRaw()); |
1576 | assert (context); | |
edce4d98 | 1577 | assert(context->http == http); |
1578 | ||
559da936 | 1579 | |
0655fa4d | 1580 | clientStreamNode *next = ( clientStreamNode *)aNode->node.next->data; |
62e76326 | 1581 | |
edce4d98 | 1582 | if (!context->ourNode) |
62e76326 | 1583 | context->ourNode = aNode; |
1584 | ||
e6ccf245 | 1585 | /* no cbdatareference, this is only used once, and safely */ |
edce4d98 | 1586 | if (context->flags.storelogiccomplete) { |
62e76326 | 1587 | StoreIOBuffer tempBuffer; |
1588 | tempBuffer.offset = next->readBuffer.offset + context->headers_sz; | |
1589 | tempBuffer.length = next->readBuffer.length; | |
1590 | tempBuffer.data = next->readBuffer.data; | |
1591 | ||
86a2f789 | 1592 | storeClientCopy(context->sc, http->storeEntry(), |
0655fa4d | 1593 | tempBuffer, clientReplyContext::SendMoreData, context); |
62e76326 | 1594 | return; |
edce4d98 | 1595 | } |
62e76326 | 1596 | |
edce4d98 | 1597 | if (context->http->request->method == METHOD_PURGE) { |
62e76326 | 1598 | context->purgeRequest(); |
1599 | return; | |
edce4d98 | 1600 | } |
62e76326 | 1601 | |
edce4d98 | 1602 | if (context->http->request->method == METHOD_TRACE) { |
62e76326 | 1603 | if (context->http->request->max_forwards == 0) { |
0655fa4d | 1604 | context->traceReply(aNode); |
62e76326 | 1605 | return; |
1606 | } | |
1607 | ||
1608 | /* continue forwarding, not finished yet. */ | |
1609 | http->logType = LOG_TCP_MISS; | |
1610 | ||
1611 | context->doGetMoreData(); | |
edce4d98 | 1612 | } else |
62e76326 | 1613 | context->identifyStoreObject(); |
e6ccf245 | 1614 | } |
1615 | ||
1616 | void | |
1617 | clientReplyContext::doGetMoreData() | |
1618 | { | |
edce4d98 | 1619 | /* We still have to do store logic processing - vary, cache hit etc */ |
86a2f789 | 1620 | if (http->storeEntry() != NULL) { |
62e76326 | 1621 | /* someone found the object in the cache for us */ |
1622 | StoreIOBuffer tempBuffer; | |
34266cde | 1623 | |
3d0ac046 | 1624 | http->storeEntry()->lock(); |
62e76326 | 1625 | |
86a2f789 | 1626 | if (http->storeEntry()->mem_obj == NULL) { |
62e76326 | 1627 | /* |
1628 | * This if-block exists because we don't want to clobber | |
1629 | * a preexiting mem_obj->method value if the mem_obj | |
1630 | * already exists. For example, when a HEAD request | |
1631 | * is a cache hit for a GET response, we want to keep | |
1632 | * the method as GET. | |
1633 | */ | |
3900307b | 1634 | http->storeEntry()->createMemObject(http->uri, http->log_uri); |
7d5f62a4 | 1635 | http->storeEntry()->mem_obj->method = http->request->method; |
62e76326 | 1636 | } |
1637 | ||
86a2f789 | 1638 | sc = storeClientListAdd(http->storeEntry(), this); |
edce4d98 | 1639 | #if DELAY_POOLS |
62e76326 | 1640 | |
1641 | sc->setDelayId(DelayId::DelayClient(http)); | |
edce4d98 | 1642 | #endif |
62e76326 | 1643 | |
1644 | assert(http->logType == LOG_TCP_HIT); | |
1645 | reqofs = 0; | |
1646 | /* guarantee nothing has been sent yet! */ | |
1647 | assert(http->out.size == 0); | |
1648 | assert(http->out.offset == 0); | |
b86ab75b | 1649 | #if USE_ZPH_QOS |
575cb927 AJ |
1650 | if (Config.zph.tos_local_hit) { |
1651 | debugs(33, 2, "ZPH Local hit, TOS=" << Config.zph.tos_local_hit); | |
1652 | comm_set_tos(http->getConn()->fd, Config.zph.tos_local_hit); | |
b86ab75b AJ |
1653 | } |
1654 | #endif /* USE_ZPH_QOS */ | |
62e76326 | 1655 | tempBuffer.offset = reqofs; |
1656 | tempBuffer.length = getNextNode()->readBuffer.length; | |
1657 | tempBuffer.data = getNextNode()->readBuffer.data; | |
559da936 | 1658 | storeClientCopy(sc, http->storeEntry(), tempBuffer, CacheHit, this); |
edce4d98 | 1659 | } else { |
62e76326 | 1660 | /* MISS CASE, http->logType is already set! */ |
0655fa4d | 1661 | processMiss(); |
edce4d98 | 1662 | } |
1663 | } | |
1664 | ||
1665 | /* the next node has removed itself from the stream. */ | |
1666 | void | |
59a1efb2 | 1667 | clientReplyDetach(clientStreamNode * node, ClientHttpRequest * http) |
edce4d98 | 1668 | { |
1669 | /* detach from the stream */ | |
edce4d98 | 1670 | clientStreamDetach(node, http); |
1671 | } | |
1672 | ||
1673 | /* | |
1674 | * accepts chunk of a http message in buf, parses prefix, filters headers and | |
1675 | * such, writes processed message to the message recipient | |
1676 | */ | |
1677 | void | |
0655fa4d | 1678 | clientReplyContext::SendMoreData(void *data, StoreIOBuffer result) |
edce4d98 | 1679 | { |
e6ccf245 | 1680 | clientReplyContext *context = static_cast<clientReplyContext *>(data); |
528b2c61 | 1681 | context->sendMoreData (result); |
1682 | } | |
1683 | ||
1684 | void | |
1685 | clientReplyContext::makeThisHead() | |
1686 | { | |
1687 | /* At least, I think thats what this does */ | |
1688 | dlinkDelete(&http->active, &ClientActiveRequests); | |
1689 | dlinkAdd(http, &http->active, &ClientActiveRequests); | |
1690 | } | |
1691 | ||
1692 | bool | |
1693 | clientReplyContext::errorInStream(StoreIOBuffer const &result, size_t const &sizeToProcess)const | |
1694 | { | |
1695 | return /* aborted request */ | |
86a2f789 | 1696 | (http->storeEntry() && EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) || |
62e76326 | 1697 | /* Upstream read error */ (result.flags.error) || |
1698 | /* Upstream EOF */ (sizeToProcess == 0); | |
528b2c61 | 1699 | } |
1700 | ||
1701 | void | |
1702 | clientReplyContext::sendStreamError(StoreIOBuffer const &result) | |
1703 | { | |
1704 | /* call clientWriteComplete so the client socket gets closed */ | |
1705 | /* We call into the stream, because we don't know that there is a | |
1706 | * client socket! | |
1707 | */ | |
26ac0430 | 1708 | debugs(88, 5, "clientReplyContext::sendStreamError: A stream error has occured, marking as complete and sending no data."); |
528b2c61 | 1709 | StoreIOBuffer tempBuffer; |
1710 | flags.complete = 1; | |
1711 | tempBuffer.flags.error = result.flags.error; | |
1712 | clientStreamCallback((clientStreamNode*)http->client_stream.head->data, http, NULL, | |
62e76326 | 1713 | tempBuffer); |
528b2c61 | 1714 | } |
1715 | ||
1716 | void | |
1717 | clientReplyContext::pushStreamData(StoreIOBuffer const &result, char *source) | |
1718 | { | |
1719 | StoreIOBuffer tempBuffer; | |
62e76326 | 1720 | |
528b2c61 | 1721 | if (result.length == 0) { |
bf8fe701 | 1722 | debugs(88, 5, "clientReplyContext::pushStreamData: marking request as complete due to 0 length store result"); |
62e76326 | 1723 | flags.complete = 1; |
528b2c61 | 1724 | } |
62e76326 | 1725 | |
43ae1d95 | 1726 | assert(result.offset - headers_sz == next()->readBuffer.offset); |
528b2c61 | 1727 | tempBuffer.offset = result.offset - headers_sz; |
1728 | tempBuffer.length = result.length; | |
62e76326 | 1729 | |
43ae1d95 | 1730 | if (tempBuffer.length) |
1731 | tempBuffer.data = source; | |
62e76326 | 1732 | |
528b2c61 | 1733 | clientStreamCallback((clientStreamNode*)http->client_stream.head->data, http, NULL, |
62e76326 | 1734 | tempBuffer); |
528b2c61 | 1735 | } |
1736 | ||
1737 | clientStreamNode * | |
1738 | clientReplyContext::next() const | |
1739 | { | |
1740 | assert ( (clientStreamNode*)http->client_stream.head->next->data == getNextNode()); | |
1741 | return getNextNode(); | |
1742 | } | |
1743 | ||
b51aec66 | 1744 | void |
16611143 | 1745 | clientReplyContext::sendBodyTooLargeError() |
b51aec66 | 1746 | { |
ad61a2b4 | 1747 | IpAddress tmp_noaddr; |
26ac0430 | 1748 | tmp_noaddr.SetNoAddr(); // TODO: make a global const |
16611143 | 1749 | ErrorState *err = clientBuildError(ERR_TOO_BIG, HTTP_FORBIDDEN, NULL, |
26ac0430 AJ |
1750 | http->getConn() != NULL ? http->getConn()->peer : tmp_noaddr, |
1751 | http->request); | |
16611143 | 1752 | removeClientStoreReference(&(sc), http); |
1753 | HTTPMSGUNLOCK(reply); | |
1754 | startError(err); | |
26ac0430 | 1755 | |
b51aec66 | 1756 | } |
1757 | ||
4993f571 | 1758 | void |
1759 | clientReplyContext::processReplyAccess () | |
1760 | { | |
7dc5f514 | 1761 | assert(reply); |
230a8cc6 | 1762 | /* Dont't block our own responses or HTTP status messages */ |
16611143 | 1763 | if (http->logType == LOG_TCP_DENIED || |
26ac0430 AJ |
1764 | http->logType == LOG_TCP_DENIED_REPLY || |
1765 | alwaysAllowResponse(reply->sline.status)) { | |
acbf9428 | 1766 | headers_sz = reply->hdr_sz; |
26ac0430 AJ |
1767 | processReplyAccessResult(1); |
1768 | return; | |
230a8cc6 | 1769 | } |
26ac0430 | 1770 | |
16611143 | 1771 | if (reply->expectedBodyTooLarge(*http->request)) { |
1772 | sendBodyTooLargeError(); | |
62e76326 | 1773 | return; |
1774 | } | |
1775 | ||
7dc5f514 | 1776 | headers_sz = reply->hdr_sz; |
230a8cc6 | 1777 | |
1778 | if (!Config.accessList.reply) { | |
26ac0430 AJ |
1779 | processReplyAccessResult(1); |
1780 | return; | |
230a8cc6 | 1781 | } |
1782 | ||
62e76326 | 1783 | ACLChecklist *replyChecklist; |
1784 | replyChecklist = clientAclChecklistCreate(Config.accessList.reply, http); | |
7dc5f514 | 1785 | replyChecklist->reply = HTTPMSGLOCK(reply); |
0655fa4d | 1786 | replyChecklist->nonBlockingCheck(ProcessReplyAccessResult, this); |
4993f571 | 1787 | } |
1788 | ||
1789 | void | |
0655fa4d | 1790 | clientReplyContext::ProcessReplyAccessResult (int rv, void *voidMe) |
4993f571 | 1791 | { |
1792 | clientReplyContext *me = static_cast<clientReplyContext *>(voidMe); | |
0655fa4d | 1793 | me->processReplyAccessResult(rv); |
4993f571 | 1794 | } |
1795 | ||
1796 | void | |
0655fa4d | 1797 | clientReplyContext::processReplyAccessResult(bool accessAllowed) |
4993f571 | 1798 | { |
26ac0430 AJ |
1799 | debugs(88, 2, "The reply for " << RequestMethodStr(http->request->method) |
1800 | << " " << http->uri << " is " | |
1801 | << ( accessAllowed ? "ALLOWED" : "DENIED") | |
1802 | << ", because it matched '" | |
bf8fe701 | 1803 | << (AclMatchedName ? AclMatchedName : "NO ACL's") << "'" ); |
62e76326 | 1804 | |
230a8cc6 | 1805 | if (!accessAllowed) { |
62e76326 | 1806 | ErrorState *err; |
0185bd6f | 1807 | err_type page_id; |
9ce7856a | 1808 | page_id = aclGetDenyInfoPage(&Config.denyInfoList, AclMatchedName, 1); |
0185bd6f | 1809 | |
c466369c | 1810 | http->logType = LOG_TCP_DENIED_REPLY; |
1811 | ||
0185bd6f | 1812 | if (page_id == ERR_NONE) |
1813 | page_id = ERR_ACCESS_DENIED; | |
1814 | ||
ad61a2b4 | 1815 | IpAddress tmp_noaddr; |
26ac0430 | 1816 | tmp_noaddr.SetNoAddr(); |
cc192b50 | 1817 | err = clientBuildError(page_id, HTTP_FORBIDDEN, NULL, |
26ac0430 AJ |
1818 | http->getConn() != NULL ? http->getConn()->peer : tmp_noaddr, |
1819 | http->request); | |
0185bd6f | 1820 | |
86a2f789 | 1821 | removeClientStoreReference(&sc, http); |
0185bd6f | 1822 | |
7dc5f514 | 1823 | HTTPMSGUNLOCK(reply); |
0185bd6f | 1824 | |
3c2c1d31 | 1825 | startError(err); |
1826 | ||
0185bd6f | 1827 | |
62e76326 | 1828 | return; |
1829 | } | |
1830 | ||
0976f8db | 1831 | /* Ok, the reply is allowed, */ |
1832 | http->loggingEntry(http->storeEntry()); | |
1833 | ||
7dc5f514 | 1834 | ssize_t body_size = reqofs - reply->hdr_sz; |
b297bcd0 | 1835 | if (body_size < 0) { |
26ac0430 AJ |
1836 | reqofs = reply->hdr_sz; |
1837 | body_size = 0; | |
b297bcd0 | 1838 | } |
0976f8db | 1839 | |
bf8fe701 | 1840 | debugs(88, 3, "clientReplyContext::sendMoreData: Appending " << |
1841 | (int) body_size << " bytes after " << reply->hdr_sz << | |
1842 | " bytes of headers"); | |
0976f8db | 1843 | |
f41735ea | 1844 | #if USE_SQUID_ESI |
62e76326 | 1845 | |
7dc5f514 | 1846 | if (http->flags.accel && reply->sline.status != HTTP_FORBIDDEN && |
1847 | !alwaysAllowResponse(reply->sline.status) && | |
1848 | esiEnableProcessing(reply)) { | |
bf8fe701 | 1849 | debugs(88, 2, "Enabling ESI processing for " << http->uri); |
43ae1d95 | 1850 | clientStreamInsertHead(&http->client_stream, esiStreamRead, |
1851 | esiProcessStream, esiStreamDetach, esiStreamStatus, NULL); | |
1852 | } | |
1853 | ||
5ef38a13 | 1854 | #endif |
1855 | ||
62e76326 | 1856 | if (http->request->method == METHOD_HEAD) { |
1857 | /* do not forward body for HEAD replies */ | |
1858 | body_size = 0; | |
1859 | http->flags.done_copying = 1; | |
1860 | flags.complete = 1; | |
1861 | } | |
1862 | ||
1863 | assert (!flags.headersSent); | |
1864 | flags.headersSent = true; | |
1865 | ||
1866 | StoreIOBuffer tempBuffer; | |
1867 | char *buf = next()->readBuffer.data; | |
e85eb4e1 | 1868 | char *body_buf = buf + reply->hdr_sz; |
62e76326 | 1869 | |
49ea0125 | 1870 | //Server side may disable ranges under some circumstances. |
1871 | ||
1872 | if ((!http->request->range)) | |
1873 | next()->readBuffer.offset = 0; | |
1874 | ||
e85eb4e1 AJ |
1875 | body_buf -= next()->readBuffer.offset; |
1876 | ||
62e76326 | 1877 | if (next()->readBuffer.offset != 0) { |
1878 | if (next()->readBuffer.offset > body_size) { | |
2324cda2 | 1879 | /* Can't use any of the body we received. send nothing */ |
62e76326 | 1880 | tempBuffer.length = 0; |
1881 | tempBuffer.data = NULL; | |
1882 | } else { | |
1883 | tempBuffer.length = body_size - next()->readBuffer.offset; | |
1884 | tempBuffer.data = body_buf + next()->readBuffer.offset; | |
1885 | } | |
1886 | } else { | |
1887 | tempBuffer.length = body_size; | |
1888 | tempBuffer.data = body_buf; | |
1889 | } | |
1890 | ||
0655fa4d | 1891 | /* TODO??: move the data in the buffer back by the request header size */ |
62e76326 | 1892 | clientStreamCallback((clientStreamNode *)http->client_stream.head->data, |
7dc5f514 | 1893 | http, reply, tempBuffer); |
62e76326 | 1894 | |
1895 | return; | |
4993f571 | 1896 | } |
1897 | ||
528b2c61 | 1898 | void |
1899 | clientReplyContext::sendMoreData (StoreIOBuffer result) | |
1900 | { | |
50c09fc4 | 1901 | if (deleting) |
1902 | return; | |
1903 | ||
86a2f789 | 1904 | StoreEntry *entry = http->storeEntry(); |
50c09fc4 | 1905 | |
1cf238db | 1906 | ConnStateData * conn = http->getConn(); |
50c09fc4 | 1907 | |
94a396a3 | 1908 | int fd = conn != NULL ? conn->fd : -1; |
9af2f95b AR |
1909 | if (fd >= 0 && fd_table[fd].closing()) { // too late, our conn is closing |
1910 | // TODO: should we also quit when fd is negative? | |
1911 | debugs(33,3, HERE << "not sending more data to a closing FD " << fd); | |
1912 | return; | |
1913 | } | |
50c09fc4 | 1914 | |
528b2c61 | 1915 | char *buf = next()->readBuffer.data; |
50c09fc4 | 1916 | |
c8be6d7b | 1917 | char *body_buf = buf; |
edce4d98 | 1918 | |
da33c835 | 1919 | if (buf != result.data) { |
62e76326 | 1920 | /* we've got to copy some data */ |
1921 | assert(result.length <= next()->readBuffer.length); | |
1922 | xmemcpy(buf, result.data, result.length); | |
1923 | body_buf = buf; | |
edce4d98 | 1924 | } |
62e76326 | 1925 | |
452bb8e2 | 1926 | #if USE_ZPH_QOS |
26ac0430 | 1927 | if (reqofs==0 && !logTypeIsATcpHit(http->logType)) { |
9af2f95b | 1928 | assert(fd >= 0); // the beginning of this method implies fd may be -1 |
452bb8e2 | 1929 | int tos = 0; |
575cb927 AJ |
1930 | if (Config.zph.tos_sibling_hit && http->request->hier.code==SIBLING_HIT ) { |
1931 | tos = Config.zph.tos_sibling_hit; | |
1932 | debugs(33, 2, "ZPH: Sibling Peer hit with hier.code=" << http->request->hier.code << ", TOS=" << tos); | |
1933 | } else if (Config.zph.tos_parent_hit && http->request->hier.code==PARENT_HIT) { | |
1934 | tos = Config.zph.tos_parent_hit; | |
1935 | debugs(33, 2, "ZPH: Parent Peer hit with hier.code=" << http->request->hier.code << ", TOS=" << tos); | |
1936 | } else if (Config.zph.preserve_miss_tos && Config.zph.preserve_miss_tos_mask) { | |
1937 | tos = fd_table[fd].upstreamTOS & Config.zph.preserve_miss_tos_mask; | |
452bb8e2 AJ |
1938 | debugs(33, 2, "ZPH: Preserving TOS on miss, TOS="<<tos); |
1939 | } | |
1940 | comm_set_tos(fd,tos); | |
7172612f | 1941 | } |
26ac0430 | 1942 | #endif |
7172612f | 1943 | |
ab9c533b HN |
1944 | /* We've got the final data to start pushing... */ |
1945 | flags.storelogiccomplete = 1; | |
1946 | ||
4993f571 | 1947 | reqofs += result.length; |
1948 | ||
1949 | assert(reqofs <= HTTP_REQBUF_SZ || flags.headersSent); | |
62e76326 | 1950 | |
edce4d98 | 1951 | assert(http->request != NULL); |
62e76326 | 1952 | |
edce4d98 | 1953 | /* ESI TODO: remove this assert once everything is stable */ |
1954 | assert(http->client_stream.head->data | |
62e76326 | 1955 | && cbdataReferenceValid(http->client_stream.head->data)); |
528b2c61 | 1956 | |
1957 | makeThisHead(); | |
62e76326 | 1958 | |
bf8fe701 | 1959 | debugs(88, 5, "clientReplyContext::sendMoreData: " << http->uri << ", " << |
47f6e231 | 1960 | reqofs << " bytes (" << result.length << |
bf8fe701 | 1961 | " new bytes)"); |
47f6e231 | 1962 | debugs(88, 5, "clientReplyContext::sendMoreData:" |
26ac0430 AJ |
1963 | " FD " << fd << |
1964 | " '" << entry->url() << "'" << | |
1965 | " out.offset=" << http->out.offset); | |
528b2c61 | 1966 | |
edce4d98 | 1967 | /* update size of the request */ |
4993f571 | 1968 | reqsize = reqofs; |
62e76326 | 1969 | |
4993f571 | 1970 | if (errorInStream(result, reqofs)) { |
62e76326 | 1971 | sendStreamError(result); |
1972 | return; | |
edce4d98 | 1973 | } |
528b2c61 | 1974 | |
1975 | if (flags.headersSent) { | |
62e76326 | 1976 | pushStreamData (result, buf); |
1977 | return; | |
edce4d98 | 1978 | } |
62e76326 | 1979 | |
b297bcd0 | 1980 | cloneReply(); |
21b92762 | 1981 | |
b297bcd0 | 1982 | /* handle headers */ |
21b92762 | 1983 | |
b297bcd0 | 1984 | if (Config.onoff.log_mime_hdrs) { |
26ac0430 | 1985 | size_t k; |
43ae1d95 | 1986 | |
26ac0430 AJ |
1987 | if ((k = headersEnd(buf, reqofs))) { |
1988 | safe_free(http->al.headers.reply); | |
1989 | http->al.headers.reply = (char *)xcalloc(k + 1, 1); | |
1990 | xstrncpy(http->al.headers.reply, buf, k); | |
1991 | } | |
edce4d98 | 1992 | } |
b297bcd0 HN |
1993 | |
1994 | holdingBuffer = result; | |
1995 | processReplyAccess(); | |
1996 | return; | |
edce4d98 | 1997 | } |
1998 | ||
62e76326 | 1999 | |
edce4d98 | 2000 | |
2001 | /* Using this breaks the client layering just a little! | |
2002 | */ | |
0655fa4d | 2003 | void |
60745f24 | 2004 | clientReplyContext::createStoreEntry(const HttpRequestMethod& m, request_flags flags) |
edce4d98 | 2005 | { |
0655fa4d | 2006 | assert(http != NULL); |
edce4d98 | 2007 | /* |
2008 | * For erroneous requests, we might not have a h->request, | |
2009 | * so make a fake one. | |
2010 | */ | |
62e76326 | 2011 | |
0655fa4d | 2012 | if (http->request == NULL) |
6dd9f4bd | 2013 | http->request = HTTPMSGLOCK(new HttpRequest(m, PROTO_NONE, null_string)); |
62e76326 | 2014 | |
0655fa4d | 2015 | StoreEntry *e = storeCreateEntry(http->uri, http->log_uri, flags, m); |
62e76326 | 2016 | |
0655fa4d | 2017 | sc = storeClientListAdd(e, this); |
62e76326 | 2018 | |
edce4d98 | 2019 | #if DELAY_POOLS |
62e76326 | 2020 | |
0655fa4d | 2021 | sc->setDelayId(DelayId::DelayClient(http)); |
62e76326 | 2022 | |
edce4d98 | 2023 | #endif |
62e76326 | 2024 | |
0655fa4d | 2025 | reqofs = 0; |
62e76326 | 2026 | |
0655fa4d | 2027 | reqsize = 0; |
62e76326 | 2028 | |
edce4d98 | 2029 | /* I don't think this is actually needed! -- adrian */ |
0655fa4d | 2030 | /* http->reqbuf = http->norm_reqbuf; */ |
2031 | // assert(http->reqbuf == http->norm_reqbuf); | |
edce4d98 | 2032 | /* The next line is illegal because we don't know if the client stream |
26ac0430 | 2033 | * buffers have been set up |
edce4d98 | 2034 | */ |
0655fa4d | 2035 | // storeClientCopy(http->sc, e, 0, HTTP_REQBUF_SZ, http->reqbuf, |
2036 | // SendMoreData, this); | |
edce4d98 | 2037 | /* So, we mark the store logic as complete */ |
0655fa4d | 2038 | this->flags.storelogiccomplete = 1; |
62e76326 | 2039 | |
edce4d98 | 2040 | /* and get the caller to request a read, from whereever they are */ |
62e76326 | 2041 | /* NOTE: after ANY data flows down the pipe, even one step, |
26ac0430 | 2042 | * this function CAN NOT be used to manage errors |
edce4d98 | 2043 | */ |
86a2f789 | 2044 | http->storeEntry(e); |
edce4d98 | 2045 | } |
2046 | ||
2047 | ErrorState * | |
2048 | clientBuildError(err_type page_id, http_status status, char const *url, | |
ad61a2b4 | 2049 | IpAddress &src_addr, HttpRequest * request) |
edce4d98 | 2050 | { |
2cc81f1f | 2051 | ErrorState *err = errorCon(page_id, status, request); |
cc192b50 | 2052 | err->src_addr = src_addr; |
62e76326 | 2053 | |
edce4d98 | 2054 | if (url) |
62e76326 | 2055 | err->url = xstrdup(url); |
2056 | ||
edce4d98 | 2057 | return err; |
2058 | } |