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edce4d98 | 1 | |
2 | /* | |
cdd4e1c1 | 3 | * $Id: client_side_reply.cc,v 1.136 2007/08/27 21:56:58 hno Exp $ |
edce4d98 | 4 | * |
5 | * DEBUG: section 88 Client-side Reply Routines | |
6 | * AUTHOR: Robert Collins (Originally Duane Wessels in client_side.c) | |
7 | * | |
8 | * SQUID Web Proxy Cache http://www.squid-cache.org/ | |
9 | * ---------------------------------------------------------- | |
10 | * | |
11 | * Squid is the result of efforts by numerous individuals from | |
12 | * the Internet community; see the CONTRIBUTORS file for full | |
13 | * details. Many organizations have provided support for Squid's | |
14 | * development; see the SPONSORS file for full details. Squid is | |
15 | * Copyrighted (C) 2001 by the Regents of the University of | |
16 | * California; see the COPYRIGHT file for full details. Squid | |
17 | * incorporates software developed and/or copyrighted by other | |
18 | * sources; see the CREDITS file for full details. | |
19 | * | |
20 | * This program is free software; you can redistribute it and/or modify | |
21 | * it under the terms of the GNU General Public License as published by | |
22 | * the Free Software Foundation; either version 2 of the License, or | |
23 | * (at your option) any later version. | |
24 | * | |
25 | * This program is distributed in the hope that it will be useful, | |
26 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
27 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
28 | * GNU General Public License for more details. | |
29 | * | |
30 | * You should have received a copy of the GNU General Public License | |
31 | * along with this program; if not, write to the Free Software | |
32 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. | |
33 | * | |
34 | */ | |
35 | ||
36 | #include "squid.h" | |
0655fa4d | 37 | #include "client_side_reply.h" |
aa839030 | 38 | #include "errorpage.h" |
c8be6d7b | 39 | #include "StoreClient.h" |
e6ccf245 | 40 | #include "Store.h" |
528b2c61 | 41 | #include "HttpReply.h" |
42 | #include "HttpRequest.h" | |
b6b6f466 | 43 | #include "forward.h" |
e6ccf245 | 44 | |
c8be6d7b | 45 | #include "clientStream.h" |
f5691f9c | 46 | #include "AuthUserRequest.h" |
43ae1d95 | 47 | #if ESI |
48 | #include "ESI.h" | |
49 | #endif | |
528b2c61 | 50 | #include "MemObject.h" |
4fb35c3c | 51 | #include "ACLChecklist.h" |
b0dd28ba | 52 | #include "ACL.h" |
b67e2c8c | 53 | #if DELAY_POOLS |
54 | #include "DelayPools.h" | |
55 | #endif | |
a46d2c0e | 56 | #include "client_side.h" |
985c86bc | 57 | #include "SquidTime.h" |
e6ccf245 | 58 | |
0655fa4d | 59 | CBDATA_CLASS_INIT(clientReplyContext); |
edce4d98 | 60 | |
edce4d98 | 61 | /* Local functions */ |
e6ccf245 | 62 | extern "C" CSS clientReplyStatus; |
edce4d98 | 63 | extern ErrorState *clientBuildError(err_type, http_status, char const *, |
62e76326 | 64 | |
ddfcbc22 | 65 | struct IN_ADDR *, HttpRequest *); |
edce4d98 | 66 | |
edce4d98 | 67 | /* privates */ |
edce4d98 | 68 | |
0655fa4d | 69 | clientReplyContext::~clientReplyContext() |
edce4d98 | 70 | { |
50c09fc4 | 71 | deleting = true; |
72 | /* This may trigger a callback back into SendMoreData as the cbdata | |
73 | * is still valid | |
74 | */ | |
86a2f789 | 75 | removeClientStoreReference(&sc, http); |
edce4d98 | 76 | /* old_entry might still be set if we didn't yet get the reply |
0655fa4d | 77 | * code in HandleIMSReply() */ |
78 | removeStoreReference(&old_sc, &old_entry); | |
79 | safe_free(tempBuffer.data); | |
80 | cbdataReferenceDone(http); | |
2b7d324b | 81 | HTTPMSGUNLOCK(reply); |
edce4d98 | 82 | } |
83 | ||
59a1efb2 | 84 | clientReplyContext::clientReplyContext(ClientHttpRequest *clientContext) : http (cbdataReference(clientContext)), old_entry (NULL), old_sc(NULL), deleting(false) |
0655fa4d | 85 | {} |
edce4d98 | 86 | |
87 | /* create an error in the store awaiting the client side to read it. */ | |
0655fa4d | 88 | /* This may be better placed in the clientStream logic, but it has not been |
89 | * relocated there yet | |
90 | */ | |
edce4d98 | 91 | void |
0655fa4d | 92 | clientReplyContext::setReplyToError( |
93 | err_type err, http_status status, method_t method, char const *uri, | |
ddfcbc22 | 94 | struct IN_ADDR *addr, HttpRequest * failedrequest, char *unparsedrequest, |
76f142cd | 95 | AuthUserRequest * auth_user_request) |
edce4d98 | 96 | { |
edce4d98 | 97 | ErrorState *errstate = |
62e76326 | 98 | clientBuildError(err, status, uri, addr, failedrequest); |
99 | ||
edce4d98 | 100 | if (unparsedrequest) |
62e76326 | 101 | errstate->request_hdrs = xstrdup(unparsedrequest); |
edce4d98 | 102 | |
0655fa4d | 103 | if (status == HTTP_NOT_IMPLEMENTED && http->request) |
62e76326 | 104 | /* prevent confusion over whether we default to persistent or not */ |
0655fa4d | 105 | http->request->flags.proxy_keepalive = 0; |
62e76326 | 106 | |
0655fa4d | 107 | http->al.http.code = errstate->httpStatus; |
edce4d98 | 108 | |
0655fa4d | 109 | createStoreEntry(method, request_flags()); |
62e76326 | 110 | |
111 | if (auth_user_request) | |
112 | { | |
113 | errstate->auth_user_request = auth_user_request; | |
4f0ef8e8 | 114 | AUTHUSERREQUESTLOCK(errstate->auth_user_request, "errstate"); |
edce4d98 | 115 | } |
62e76326 | 116 | |
edce4d98 | 117 | assert(errstate->callback_data == NULL); |
86a2f789 | 118 | errorAppendEntry(http->storeEntry(), errstate); |
edce4d98 | 119 | /* Now the caller reads to get this */ |
120 | } | |
121 | ||
122 | void | |
0655fa4d | 123 | clientReplyContext::removeStoreReference(store_client ** scp, |
124 | StoreEntry ** ep) | |
edce4d98 | 125 | { |
126 | StoreEntry *e; | |
127 | store_client *sc = *scp; | |
62e76326 | 128 | |
edce4d98 | 129 | if ((e = *ep) != NULL) { |
62e76326 | 130 | *ep = NULL; |
0655fa4d | 131 | storeUnregister(sc, e, this); |
62e76326 | 132 | *scp = NULL; |
97b5e68f | 133 | e->unlock(); |
edce4d98 | 134 | } |
135 | } | |
136 | ||
86a2f789 | 137 | void |
138 | clientReplyContext::removeClientStoreReference(store_client **scp, ClientHttpRequest *http) | |
139 | { | |
140 | StoreEntry *reference = http->storeEntry(); | |
141 | removeStoreReference(scp, &reference); | |
142 | http->storeEntry(reference); | |
143 | } | |
144 | ||
e6ccf245 | 145 | void * |
a695955b | 146 | clientReplyContext::operator new (size_t byteCount) |
e6ccf245 | 147 | { |
148 | /* derived classes with different sizes must implement their own new */ | |
149 | assert (byteCount == sizeof (clientReplyContext)); | |
0655fa4d | 150 | CBDATA_INIT_TYPE(clientReplyContext); |
e6ccf245 | 151 | return cbdataAlloc(clientReplyContext); |
152 | } | |
153 | ||
154 | void | |
155 | clientReplyContext::operator delete (void *address) | |
156 | { | |
a50bfe93 | 157 | clientReplyContext * tmp = (clientReplyContext *)address; |
158 | cbdataFree (tmp); | |
e6ccf245 | 159 | } |
160 | ||
edce4d98 | 161 | void |
0655fa4d | 162 | clientReplyContext::saveState() |
edce4d98 | 163 | { |
e6ccf245 | 164 | assert(old_sc == NULL); |
bf8fe701 | 165 | debugs(88, 3, "clientReplyContext::saveState: saving store context"); |
86a2f789 | 166 | old_entry = http->storeEntry(); |
e6ccf245 | 167 | old_sc = sc; |
168 | old_reqsize = reqsize; | |
169 | tempBuffer.offset = reqofs; | |
edce4d98 | 170 | /* Prevent accessing the now saved entries */ |
86a2f789 | 171 | http->storeEntry(NULL); |
e6ccf245 | 172 | sc = NULL; |
173 | reqsize = 0; | |
174 | reqofs = 0; | |
edce4d98 | 175 | } |
176 | ||
177 | void | |
0655fa4d | 178 | clientReplyContext::restoreState() |
edce4d98 | 179 | { |
e6ccf245 | 180 | assert(old_sc != NULL); |
bf8fe701 | 181 | debugs(88, 3, "clientReplyContext::restoreState: Restoring store context"); |
86a2f789 | 182 | removeClientStoreReference(&sc, http); |
183 | http->storeEntry(old_entry); | |
e6ccf245 | 184 | sc = old_sc; |
185 | reqsize = old_reqsize; | |
186 | reqofs = tempBuffer.offset; | |
edce4d98 | 187 | /* Prevent accessed the old saved entries */ |
0655fa4d | 188 | old_entry = NULL; |
e6ccf245 | 189 | old_sc = NULL; |
190 | old_reqsize = 0; | |
191 | tempBuffer.offset = 0; | |
c8be6d7b | 192 | } |
193 | ||
194 | void | |
0655fa4d | 195 | clientReplyContext::startError(ErrorState * err) |
c8be6d7b | 196 | { |
0655fa4d | 197 | createStoreEntry(http->request->method, request_flags()); |
198 | triggerInitialStoreRead(); | |
86a2f789 | 199 | errorAppendEntry(http->storeEntry(), err); |
edce4d98 | 200 | } |
201 | ||
e6ccf245 | 202 | clientStreamNode * |
528b2c61 | 203 | clientReplyContext::getNextNode() const |
e6ccf245 | 204 | { |
62e76326 | 205 | return (clientStreamNode *)ourNode->node.next->data; |
e6ccf245 | 206 | } |
207 | ||
62e76326 | 208 | /* This function is wrong - the client parameters don't include the |
528b2c61 | 209 | * header offset |
210 | */ | |
c8be6d7b | 211 | void |
0655fa4d | 212 | clientReplyContext::triggerInitialStoreRead() |
c8be6d7b | 213 | { |
0655fa4d | 214 | /* when confident, 0 becomes reqofs, and then this factors into |
528b2c61 | 215 | * startSendProcess |
216 | */ | |
0655fa4d | 217 | assert(reqofs == 0); |
dd272b8e | 218 | StoreIOBuffer tempBuffer (next()->readBuffer.length, 0, next()->readBuffer.data); |
86a2f789 | 219 | storeClientCopy(sc, http->storeEntry(), tempBuffer, SendMoreData, this); |
c8be6d7b | 220 | } |
edce4d98 | 221 | |
222 | /* there is an expired entry in the store. | |
223 | * setup a temporary buffer area and perform an IMS to the origin | |
224 | */ | |
0655fa4d | 225 | void |
226 | clientReplyContext::processExpired() | |
edce4d98 | 227 | { |
edce4d98 | 228 | char *url = http->uri; |
229 | StoreEntry *entry = NULL; | |
bf8fe701 | 230 | debugs(88, 3, "clientReplyContext::processExpired: '" << http->uri << "'"); |
86a2f789 | 231 | assert(http->storeEntry()->lastmod >= 0); |
edce4d98 | 232 | /* |
233 | * check if we are allowed to contact other servers | |
234 | * @?@: Instead of a 504 (Gateway Timeout) reply, we may want to return | |
235 | * a stale entry *if* it matches client requirements | |
236 | */ | |
62e76326 | 237 | |
0655fa4d | 238 | if (http->onlyIfCached()) { |
239 | processOnlyIfCachedMiss(); | |
62e76326 | 240 | return; |
edce4d98 | 241 | } |
62e76326 | 242 | |
edce4d98 | 243 | http->request->flags.refresh = 1; |
244 | #if STORE_CLIENT_LIST_DEBUG | |
c8be6d7b | 245 | /* Prevent a race with the store client memory free routines |
edce4d98 | 246 | */ |
0655fa4d | 247 | assert(storeClientIsThisAClient(sc, this)); |
edce4d98 | 248 | #endif |
249 | /* Prepare to make a new temporary request */ | |
0655fa4d | 250 | saveState(); |
edce4d98 | 251 | entry = storeCreateEntry(url, |
62e76326 | 252 | http->log_uri, http->request->flags, http->request->method); |
34266cde | 253 | /* NOTE, don't call StoreEntry->lock(), storeCreateEntry() does it */ |
0655fa4d | 254 | sc = storeClientListAdd(entry, this); |
edce4d98 | 255 | #if DELAY_POOLS |
256 | /* delay_id is already set on original store client */ | |
0655fa4d | 257 | sc->setDelayId(DelayId::DelayClient(http)); |
edce4d98 | 258 | #endif |
62e76326 | 259 | |
0655fa4d | 260 | http->request->lastmod = old_entry->lastmod; |
4a7a3d56 | 261 | debugs(88, 5, "clientReplyContext::processExpired : lastmod " << entry->lastmod ); |
86a2f789 | 262 | http->storeEntry(entry); |
c8be6d7b | 263 | assert(http->out.offset == 0); |
b2d22df6 | 264 | |
265 | /* | |
266 | * A refcounted pointer so that FwdState stays around as long as | |
267 | * this clientReplyContext does | |
268 | */ | |
94a396a3 | 269 | FwdState::fwdStart(http->getConn() != NULL ? http->getConn()->fd : -1, |
be0c6690 | 270 | http->storeEntry(), |
271 | http->request); | |
edce4d98 | 272 | /* Register with storage manager to receive updates when data comes in. */ |
62e76326 | 273 | |
edce4d98 | 274 | if (EBIT_TEST(entry->flags, ENTRY_ABORTED)) |
bf8fe701 | 275 | debugs(88, 0, "clientReplyContext::processExpired: Found ENTRY_ABORTED object"); |
62e76326 | 276 | |
c8be6d7b | 277 | { |
62e76326 | 278 | /* start counting the length from 0 */ |
0655fa4d | 279 | StoreIOBuffer tempBuffer(HTTP_REQBUF_SZ, 0, tempbuf); |
280 | storeClientCopy(sc, entry, tempBuffer, HandleIMSReply, this); | |
edce4d98 | 281 | } |
282 | } | |
283 | ||
edce4d98 | 284 | |
528b2c61 | 285 | void |
286 | clientReplyContext::sendClientUpstreamResponse() | |
287 | { | |
288 | StoreIOBuffer tempresult; | |
0655fa4d | 289 | removeStoreReference(&old_sc, &old_entry); |
2324cda2 | 290 | /* here the data to send is the data we just received */ |
528b2c61 | 291 | tempBuffer.offset = 0; |
292 | old_reqsize = 0; | |
0655fa4d | 293 | /* sendMoreData tracks the offset as well. |
528b2c61 | 294 | * Force it back to zero */ |
295 | reqofs = 0; | |
86a2f789 | 296 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 297 | /* TODO: provide sendMoreData with the ready parsed reply */ |
528b2c61 | 298 | tempresult.length = reqsize; |
299 | tempresult.data = tempbuf; | |
0655fa4d | 300 | sendMoreData(tempresult); |
528b2c61 | 301 | } |
302 | ||
edce4d98 | 303 | void |
0655fa4d | 304 | clientReplyContext::HandleIMSReply(void *data, StoreIOBuffer result) |
edce4d98 | 305 | { |
e6ccf245 | 306 | clientReplyContext *context = (clientReplyContext *)data; |
0655fa4d | 307 | context->handleIMSReply(result); |
308 | } | |
62e76326 | 309 | |
0655fa4d | 310 | void |
311 | clientReplyContext::sendClientOldEntry() | |
312 | { | |
313 | /* Get the old request back */ | |
314 | restoreState(); | |
315 | /* here the data to send is in the next nodes buffers already */ | |
86a2f789 | 316 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 317 | /* sendMoreData tracks the offset as well. |
318 | * Force it back to zero */ | |
319 | reqofs = 0; | |
320 | StoreIOBuffer tempresult (reqsize, reqofs, next()->readBuffer.data); | |
321 | sendMoreData(tempresult); | |
322 | } | |
62e76326 | 323 | |
1d7ab0f4 | 324 | /* This is the workhorse of the HandleIMSReply callback. |
325 | * | |
326 | * It is called when we've got data back from the origin following our | |
327 | * IMS request to revalidate a stale entry. | |
328 | */ | |
0655fa4d | 329 | void |
1d7ab0f4 | 330 | clientReplyContext::handleIMSReply(StoreIOBuffer result) |
0655fa4d | 331 | { |
1d7ab0f4 | 332 | if (deleting) |
333 | return; | |
62e76326 | 334 | |
bf8fe701 | 335 | debugs(88, 3, "handleIMSReply: " << http->storeEntry()->url() << ", " << (long unsigned) result.length << " bytes" ); |
62e76326 | 336 | |
1d7ab0f4 | 337 | if (http->storeEntry() == NULL) |
338 | return; | |
07947ad8 | 339 | |
1d7ab0f4 | 340 | if (result.flags.error && !EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) |
341 | return; | |
62e76326 | 342 | |
1d7ab0f4 | 343 | /* update size of the request */ |
344 | reqsize = result.length + reqofs; | |
62e76326 | 345 | |
1d7ab0f4 | 346 | const http_status status = http->storeEntry()->getReply()->sline.status; |
62e76326 | 347 | |
1d7ab0f4 | 348 | // request to origin was aborted |
349 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) { | |
bf8fe701 | 350 | debugs(88, 3, "handleIMSReply: request to origin aborted '" << http->storeEntry()->url() << "', sending old entry to client" ); |
1d7ab0f4 | 351 | http->logType = LOG_TCP_REFRESH_FAIL; |
352 | sendClientOldEntry(); | |
0655fa4d | 353 | } |
62e76326 | 354 | |
1d7ab0f4 | 355 | // we have a partial reply from the origin |
356 | else if (STORE_PENDING == http->storeEntry()->store_status && 0 == status) { | |
357 | // header is too large, send old entry | |
62e76326 | 358 | |
1d7ab0f4 | 359 | if (reqsize >= HTTP_REQBUF_SZ) { |
bf8fe701 | 360 | debugs(88, 3, "handleIMSReply: response from origin is too large '" << http->storeEntry()->url() << "', sending old entry to client" ); |
1d7ab0f4 | 361 | http->logType = LOG_TCP_REFRESH_FAIL; |
362 | sendClientOldEntry(); | |
0655fa4d | 363 | } |
62e76326 | 364 | |
1d7ab0f4 | 365 | // everything looks fine, we're just waiting for more data |
366 | else { | |
bf8fe701 | 367 | debugs(88, 3, "handleIMSReply: incomplete headers for '" << http->storeEntry()->url() << "', waiting for more data" ); |
1d7ab0f4 | 368 | reqofs = reqsize; |
369 | waitForMoreData(); | |
370 | } | |
0655fa4d | 371 | } |
62e76326 | 372 | |
1d7ab0f4 | 373 | // we have a reply from the origin |
374 | else { | |
375 | HttpReply *old_rep = (HttpReply *) old_entry->getReply(); | |
045a76ab | 376 | |
1d7ab0f4 | 377 | // origin replied 304 |
62e76326 | 378 | |
1d7ab0f4 | 379 | if (status == HTTP_NOT_MODIFIED) { |
380 | http->logType = LOG_TCP_REFRESH_UNMODIFIED; | |
62e76326 | 381 | |
1d7ab0f4 | 382 | // update headers on existing entry |
383 | HttpReply *old_rep = (HttpReply *) old_entry->getReply(); | |
384 | old_rep->updateOnNotModified(http->storeEntry()->getReply()); | |
3900307b | 385 | old_entry->timestampsSet(); |
62e76326 | 386 | |
1d7ab0f4 | 387 | // if client sent IMS |
388 | ||
389 | if (http->request->flags.ims) { | |
390 | // forward the 304 from origin | |
bf8fe701 | 391 | debugs(88, 3, "handleIMSReply: origin replied 304, revalidating existing entry and forwarding 304 to client"); |
1d7ab0f4 | 392 | sendClientUpstreamResponse(); |
393 | } else { | |
394 | // send existing entry, it's still valid | |
bf8fe701 | 395 | debugs(88, 3, "handleIMSReply: origin replied 304, revalidating existing entry and sending " << |
396 | old_rep->sline.status << " to client"); | |
1d7ab0f4 | 397 | sendClientOldEntry(); |
398 | } | |
399 | } | |
62e76326 | 400 | |
1d7ab0f4 | 401 | // origin replied with a non-error code |
402 | else if (status > HTTP_STATUS_NONE && status < HTTP_INTERNAL_SERVER_ERROR) { | |
403 | // forward response from origin | |
404 | http->logType = LOG_TCP_REFRESH_MODIFIED; | |
bf8fe701 | 405 | debugs(88, 3, "handleIMSReply: origin replied " << status << ", replacing existing entry and forwarding to client"); |
1d7ab0f4 | 406 | sendClientUpstreamResponse(); |
407 | } | |
62e76326 | 408 | |
1d7ab0f4 | 409 | // origin replied with an error |
410 | else { | |
411 | // ignore and let client have old entry | |
412 | http->logType = LOG_TCP_REFRESH_FAIL; | |
bf8fe701 | 413 | debugs(88, 3, "handleIMSReply: origin replied with error " << |
414 | status << ", sending old entry (" << old_rep->sline.status << ") to client"); | |
1d7ab0f4 | 415 | sendClientOldEntry(); |
416 | } | |
417 | } | |
edce4d98 | 418 | } |
419 | ||
e6ccf245 | 420 | extern "C" CSR clientGetMoreData; |
421 | extern "C" CSD clientReplyDetach; | |
edce4d98 | 422 | |
423 | /* | |
424 | * clientCacheHit should only be called until the HTTP reply headers | |
425 | * have been parsed. Normally this should be a single call, but | |
426 | * it might take more than one. As soon as we have the headers, | |
0655fa4d | 427 | * we hand off to clientSendMoreData, processExpired, or |
428 | * processMiss. | |
edce4d98 | 429 | */ |
430 | void | |
0655fa4d | 431 | clientReplyContext::CacheHit(void *data, StoreIOBuffer result) |
edce4d98 | 432 | { |
e6ccf245 | 433 | clientReplyContext *context = (clientReplyContext *)data; |
0655fa4d | 434 | context->cacheHit (result); |
435 | } | |
436 | ||
437 | void | |
438 | clientReplyContext::cacheHit(StoreIOBuffer result) | |
439 | { | |
045a76ab | 440 | if (deleting) |
441 | return; | |
442 | ||
86a2f789 | 443 | StoreEntry *e = http->storeEntry(); |
045a76ab | 444 | |
190154cf | 445 | HttpRequest *r = http->request; |
045a76ab | 446 | |
4a7a3d56 | 447 | debugs(88, 3, "clientCacheHit: " << http->uri << ", " << result.length << " bytes"); |
62e76326 | 448 | |
86a2f789 | 449 | if (http->storeEntry() == NULL) { |
bf8fe701 | 450 | debugs(88, 3, "clientCacheHit: request aborted"); |
62e76326 | 451 | return; |
c8be6d7b | 452 | } else if (result.flags.error) { |
62e76326 | 453 | /* swap in failure */ |
bf8fe701 | 454 | debugs(88, 3, "clientCacheHit: swapin failure for " << http->uri); |
62e76326 | 455 | http->logType = LOG_TCP_SWAPFAIL_MISS; |
86a2f789 | 456 | removeClientStoreReference(&sc, http); |
0655fa4d | 457 | processMiss(); |
62e76326 | 458 | return; |
edce4d98 | 459 | } |
62e76326 | 460 | |
d3b3ab85 | 461 | if (result.length == 0) { |
62e76326 | 462 | /* the store couldn't get enough data from the file for us to id the |
463 | * object | |
464 | */ | |
465 | /* treat as a miss */ | |
466 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 467 | processMiss(); |
62e76326 | 468 | return; |
d3b3ab85 | 469 | } |
62e76326 | 470 | |
edce4d98 | 471 | assert(!EBIT_TEST(e->flags, ENTRY_ABORTED)); |
472 | /* update size of the request */ | |
0655fa4d | 473 | reqsize = result.length + reqofs; |
62e76326 | 474 | |
528b2c61 | 475 | if (e->getReply()->sline.status == 0) { |
62e76326 | 476 | /* |
477 | * we don't have full reply headers yet; either wait for more or | |
478 | * punt to clientProcessMiss. | |
479 | */ | |
480 | ||
481 | if (e->mem_status == IN_MEMORY || e->store_status == STORE_OK) { | |
0655fa4d | 482 | processMiss(); |
483 | } else if (result.length + reqofs >= HTTP_REQBUF_SZ | |
62e76326 | 484 | && http->out.offset == 0) { |
0655fa4d | 485 | processMiss(); |
62e76326 | 486 | } else { |
bf8fe701 | 487 | debugs(88, 3, "clientCacheHit: waiting for HTTP reply headers"); |
0655fa4d | 488 | reqofs += result.length; |
489 | assert(reqofs <= HTTP_REQBUF_SZ); | |
62e76326 | 490 | /* get the next users' buffer */ |
0655fa4d | 491 | StoreIOBuffer tempBuffer; |
492 | tempBuffer.offset = http->out.offset + reqofs; | |
493 | tempBuffer.length = next()->readBuffer.length - reqofs; | |
494 | tempBuffer.data = next()->readBuffer.data + reqofs; | |
495 | storeClientCopy(sc, e, | |
496 | tempBuffer, CacheHit, this); | |
62e76326 | 497 | } |
498 | ||
499 | return; | |
edce4d98 | 500 | } |
62e76326 | 501 | |
edce4d98 | 502 | /* |
503 | * Got the headers, now grok them | |
504 | */ | |
29b8d8d6 | 505 | assert(http->logType == LOG_TCP_HIT); |
62e76326 | 506 | |
cdd4e1c1 | 507 | if (strcmp(e->mem_obj->url, urlCanonical(r)) != 0) { |
508 | debugs(33, 1, "clientProcessHit: URL mismatch, '" << e->mem_obj->url << "' != '" << urlCanonical(r) << "'"); | |
509 | processMiss(); | |
510 | return; | |
511 | } | |
512 | ||
edce4d98 | 513 | switch (varyEvaluateMatch(e, r)) { |
62e76326 | 514 | |
edce4d98 | 515 | case VARY_NONE: |
62e76326 | 516 | /* No variance detected. Continue as normal */ |
517 | break; | |
518 | ||
edce4d98 | 519 | case VARY_MATCH: |
62e76326 | 520 | /* This is the correct entity for this request. Continue */ |
bf8fe701 | 521 | debugs(88, 2, "clientProcessHit: Vary MATCH!"); |
62e76326 | 522 | break; |
523 | ||
edce4d98 | 524 | case VARY_OTHER: |
62e76326 | 525 | /* This is not the correct entity for this request. We need |
526 | * to requery the cache. | |
527 | */ | |
86a2f789 | 528 | removeClientStoreReference(&sc, http); |
62e76326 | 529 | e = NULL; |
530 | /* Note: varyEvalyateMatch updates the request with vary information | |
531 | * so we only get here once. (it also takes care of cancelling loops) | |
532 | */ | |
bf8fe701 | 533 | debugs(88, 2, "clientProcessHit: Vary detected!"); |
0655fa4d | 534 | clientGetMoreData(ourNode, http); |
62e76326 | 535 | return; |
536 | ||
edce4d98 | 537 | case VARY_CANCEL: |
62e76326 | 538 | /* varyEvaluateMatch found a object loop. Process as miss */ |
bf8fe701 | 539 | debugs(88, 1, "clientProcessHit: Vary object loop!"); |
0655fa4d | 540 | processMiss(); |
62e76326 | 541 | return; |
edce4d98 | 542 | } |
62e76326 | 543 | |
edce4d98 | 544 | if (r->method == METHOD_PURGE) { |
86a2f789 | 545 | removeClientStoreReference(&sc, http); |
62e76326 | 546 | e = NULL; |
0655fa4d | 547 | purgeRequest(); |
62e76326 | 548 | return; |
edce4d98 | 549 | } |
62e76326 | 550 | |
3900307b | 551 | if (e->checkNegativeHit() |
36e6655b | 552 | #if HTTP_VIOLATIONS |
553 | && !r->flags.nocache_hack | |
554 | #endif | |
555 | ) { | |
62e76326 | 556 | http->logType = LOG_TCP_NEGATIVE_HIT; |
0655fa4d | 557 | sendMoreData(result); |
f7cf9b8c | 558 | } else if (!Config.onoff.offline && refreshCheckHTTP(e, r) && !http->flags.internal) { |
bf8fe701 | 559 | debugs(88, 5, "clientCacheHit: in refreshCheck() block"); |
62e76326 | 560 | /* |
561 | * We hold a stale copy; it needs to be validated | |
562 | */ | |
563 | /* | |
564 | * The 'need_validation' flag is used to prevent forwarding | |
565 | * loops between siblings. If our copy of the object is stale, | |
566 | * then we should probably only use parents for the validation | |
567 | * request. Otherwise two siblings could generate a loop if | |
568 | * both have a stale version of the object. | |
569 | */ | |
570 | r->flags.need_validation = 1; | |
571 | ||
572 | if (e->lastmod < 0) { | |
573 | /* | |
574 | * Previous reply didn't have a Last-Modified header, | |
575 | * we cannot revalidate it. | |
576 | */ | |
577 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 578 | processMiss(); |
62e76326 | 579 | } else if (r->flags.nocache) { |
580 | /* | |
581 | * This did not match a refresh pattern that overrides no-cache | |
582 | * we should honour the client no-cache header. | |
583 | */ | |
584 | http->logType = LOG_TCP_CLIENT_REFRESH_MISS; | |
0655fa4d | 585 | processMiss(); |
62e76326 | 586 | } else if (r->protocol == PROTO_HTTP) { |
587 | /* | |
588 | * Object needs to be revalidated | |
589 | * XXX This could apply to FTP as well, if Last-Modified is known. | |
590 | */ | |
0655fa4d | 591 | processExpired(); |
62e76326 | 592 | } else { |
593 | /* | |
594 | * We don't know how to re-validate other protocols. Handle | |
595 | * them as if the object has expired. | |
596 | */ | |
597 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 598 | processMiss(); |
62e76326 | 599 | } |
edce4d98 | 600 | } else if (r->flags.ims) { |
62e76326 | 601 | /* |
602 | * Handle If-Modified-Since requests from the client | |
603 | */ | |
604 | ||
605 | if (e->getReply()->sline.status != HTTP_OK) { | |
bf8fe701 | 606 | debugs(88, 4, "clientCacheHit: Reply code " << |
607 | e->getReply()->sline.status << " != 200"); | |
62e76326 | 608 | http->logType = LOG_TCP_MISS; |
0655fa4d | 609 | processMiss(); |
610 | } else if (e->modifiedSince(http->request)) { | |
62e76326 | 611 | http->logType = LOG_TCP_IMS_HIT; |
0655fa4d | 612 | sendMoreData(result); |
62e76326 | 613 | } else { |
0655fa4d | 614 | time_t const timestamp = e->timestamp; |
06a5ae20 | 615 | HttpReply *temprep = e->getReply()->make304(); |
62e76326 | 616 | http->logType = LOG_TCP_IMS_HIT; |
86a2f789 | 617 | removeClientStoreReference(&sc, http); |
0655fa4d | 618 | createStoreEntry(http->request->method, |
619 | request_flags()); | |
86a2f789 | 620 | e = http->storeEntry(); |
62e76326 | 621 | /* |
622 | * Copy timestamp from the original entry so the 304 | |
623 | * reply has a meaningful Age: header. | |
624 | */ | |
625 | e->timestamp = timestamp; | |
db237875 | 626 | e->replaceHttpReply(temprep); |
62e76326 | 627 | e->complete(); |
628 | /* TODO: why put this in the store and then serialise it and then parse it again. | |
629 | * Simply mark the request complete in our context and | |
630 | * write the reply struct to the client side | |
631 | */ | |
0655fa4d | 632 | triggerInitialStoreRead(); |
62e76326 | 633 | } |
edce4d98 | 634 | } else { |
62e76326 | 635 | /* |
636 | * plain ol' cache hit | |
637 | */ | |
638 | ||
ffdf45f2 | 639 | if (e->store_status != STORE_OK) |
849b826a | 640 | http->logType = LOG_TCP_MISS; |
ffdf45f2 | 641 | else if (e->mem_status == IN_MEMORY) |
62e76326 | 642 | http->logType = LOG_TCP_MEM_HIT; |
643 | else if (Config.onoff.offline) | |
644 | http->logType = LOG_TCP_OFFLINE_HIT; | |
645 | ||
0655fa4d | 646 | sendMoreData(result); |
edce4d98 | 647 | } |
648 | } | |
649 | ||
650 | /* | |
651 | * Prepare to fetch the object as it's a cache miss of some kind. | |
652 | */ | |
653 | void | |
0655fa4d | 654 | clientReplyContext::processMiss() |
edce4d98 | 655 | { |
edce4d98 | 656 | char *url = http->uri; |
190154cf | 657 | HttpRequest *r = http->request; |
edce4d98 | 658 | ErrorState *err = NULL; |
bf8fe701 | 659 | debugs(88, 4, "clientProcessMiss: '" << RequestMethodStr[r->method] << " " << url << "'"); |
edce4d98 | 660 | /* |
661 | * We might have a left-over StoreEntry from a failed cache hit | |
662 | * or IMS request. | |
663 | */ | |
62e76326 | 664 | |
86a2f789 | 665 | if (http->storeEntry()) { |
666 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_SPECIAL)) { | |
bf8fe701 | 667 | debugs(88, 0, "clientProcessMiss: miss on a special object (" << url << ")."); |
668 | debugs(88, 0, "\tlog_type = " << log_tags[http->logType]); | |
3900307b | 669 | http->storeEntry()->dump(1); |
62e76326 | 670 | } |
671 | ||
86a2f789 | 672 | removeClientStoreReference(&sc, http); |
edce4d98 | 673 | } |
62e76326 | 674 | |
edce4d98 | 675 | if (r->method == METHOD_PURGE) { |
0655fa4d | 676 | purgeRequest(); |
62e76326 | 677 | return; |
edce4d98 | 678 | } |
62e76326 | 679 | |
0655fa4d | 680 | if (http->onlyIfCached()) { |
681 | processOnlyIfCachedMiss(); | |
62e76326 | 682 | return; |
edce4d98 | 683 | } |
62e76326 | 684 | |
edce4d98 | 685 | /* |
686 | * Deny loops when running in accelerator/transproxy mode. | |
687 | */ | |
688 | if (http->flags.accel && r->flags.loopdetect) { | |
62e76326 | 689 | http->al.http.code = HTTP_FORBIDDEN; |
690 | err = | |
691 | clientBuildError(ERR_ACCESS_DENIED, HTTP_FORBIDDEN, NULL, | |
98242069 | 692 | &http->getConn()->peer.sin_addr, http->request); |
0655fa4d | 693 | createStoreEntry(r->method, request_flags()); |
86a2f789 | 694 | errorAppendEntry(http->storeEntry(), err); |
0655fa4d | 695 | triggerInitialStoreRead(); |
62e76326 | 696 | return; |
edce4d98 | 697 | } else { |
62e76326 | 698 | assert(http->out.offset == 0); |
0655fa4d | 699 | createStoreEntry(r->method, r->flags); |
700 | triggerInitialStoreRead(); | |
62e76326 | 701 | |
702 | if (http->redirect.status) { | |
06a5ae20 | 703 | HttpReply *rep = new HttpReply; |
edce4d98 | 704 | #if LOG_TCP_REDIRECTS |
62e76326 | 705 | |
706 | http->logType = LOG_TCP_REDIRECT; | |
edce4d98 | 707 | #endif |
62e76326 | 708 | |
d88e3c49 | 709 | http->storeEntry()->releaseRequest(); |
06a5ae20 | 710 | rep->redirect(http->redirect.status, http->redirect.location); |
db237875 | 711 | http->storeEntry()->replaceHttpReply(rep); |
86a2f789 | 712 | http->storeEntry()->complete(); |
62e76326 | 713 | return; |
714 | } | |
715 | ||
716 | if (http->flags.internal) | |
717 | r->protocol = PROTO_INTERNAL; | |
718 | ||
94a396a3 | 719 | FwdState::fwdStart(http->getConn() != NULL ? http->getConn()->fd : -1, |
be0c6690 | 720 | http->storeEntry(), |
721 | r); | |
edce4d98 | 722 | } |
723 | } | |
724 | ||
725 | /* | |
726 | * client issued a request with an only-if-cached cache-control directive; | |
727 | * we did not find a cached object that can be returned without | |
728 | * contacting other servers; | |
729 | * respond with a 504 (Gateway Timeout) as suggested in [RFC 2068] | |
730 | */ | |
0655fa4d | 731 | void |
732 | clientReplyContext::processOnlyIfCachedMiss() | |
edce4d98 | 733 | { |
edce4d98 | 734 | ErrorState *err = NULL; |
bf8fe701 | 735 | debugs(88, 4, "clientProcessOnlyIfCachedMiss: '" << |
736 | RequestMethodStr[http->request->method] << " " << http->uri << "'"); | |
edce4d98 | 737 | http->al.http.code = HTTP_GATEWAY_TIMEOUT; |
738 | err = clientBuildError(ERR_ONLY_IF_CACHED_MISS, HTTP_GATEWAY_TIMEOUT, NULL, | |
98242069 | 739 | &http->getConn()->peer.sin_addr, http->request); |
86a2f789 | 740 | removeClientStoreReference(&sc, http); |
0655fa4d | 741 | startError(err); |
edce4d98 | 742 | } |
743 | ||
744 | void | |
e6ccf245 | 745 | clientReplyContext::purgeRequestFindObjectToPurge() |
746 | { | |
747 | /* Try to find a base entry */ | |
748 | http->flags.purging = 1; | |
749 | lookingforstore = 1; | |
3b13a8fd | 750 | StoreEntry::getPublicByRequestMethod(this, http->request, METHOD_GET); |
e6ccf245 | 751 | } |
752 | ||
753 | void | |
3b13a8fd | 754 | clientReplyContext::created(StoreEntry *newEntry) |
e6ccf245 | 755 | { |
756 | if (lookingforstore == 1) | |
62e76326 | 757 | purgeFoundGet(newEntry); |
e6ccf245 | 758 | else if (lookingforstore == 2) |
62e76326 | 759 | purgeFoundHead(newEntry); |
e6ccf245 | 760 | else if (lookingforstore == 3) |
62e76326 | 761 | purgeDoPurgeGet(newEntry); |
e6ccf245 | 762 | else if (lookingforstore == 4) |
62e76326 | 763 | purgeDoPurgeHead(newEntry); |
e6ccf245 | 764 | else if (lookingforstore == 5) |
62e76326 | 765 | identifyFoundObject(newEntry); |
e6ccf245 | 766 | } |
767 | ||
768 | void | |
3b13a8fd | 769 | clientReplyContext::purgeFoundGet(StoreEntry *newEntry) |
e6ccf245 | 770 | { |
771 | if (newEntry->isNull()) { | |
62e76326 | 772 | lookingforstore = 2; |
773 | StoreEntry::getPublicByRequestMethod(this, http->request, METHOD_HEAD); | |
e6ccf245 | 774 | } else |
62e76326 | 775 | purgeFoundObject (newEntry); |
e6ccf245 | 776 | } |
777 | ||
778 | void | |
3b13a8fd | 779 | clientReplyContext::purgeFoundHead(StoreEntry *newEntry) |
e6ccf245 | 780 | { |
781 | if (newEntry->isNull()) | |
62e76326 | 782 | purgeDoMissPurge(); |
e6ccf245 | 783 | else |
62e76326 | 784 | purgeFoundObject (newEntry); |
e6ccf245 | 785 | } |
62e76326 | 786 | |
e6ccf245 | 787 | void |
3b13a8fd | 788 | clientReplyContext::purgeFoundObject(StoreEntry *entry) |
e6ccf245 | 789 | { |
790 | assert (entry && !entry->isNull()); | |
e4b9a2f0 | 791 | |
792 | if (EBIT_TEST(entry->flags, ENTRY_SPECIAL)) { | |
793 | http->logType = LOG_TCP_DENIED; | |
794 | ErrorState *err = | |
795 | clientBuildError(ERR_ACCESS_DENIED, HTTP_FORBIDDEN, NULL, | |
796 | &http->getConn()->peer.sin_addr, http->request); | |
797 | startError(err); | |
798 | return; | |
799 | } | |
800 | ||
62e76326 | 801 | StoreIOBuffer tempBuffer; |
802 | /* Swap in the metadata */ | |
86a2f789 | 803 | http->storeEntry(entry); |
34266cde | 804 | |
805 | http->storeEntry()->lock() | |
806 | ||
807 | ; | |
3900307b | 808 | http->storeEntry()->createMemObject(http->uri, http->log_uri); |
34266cde | 809 | |
86a2f789 | 810 | http->storeEntry()->mem_obj->method = http->request->method; |
34266cde | 811 | |
86a2f789 | 812 | sc = storeClientListAdd(http->storeEntry(), this); |
34266cde | 813 | |
62e76326 | 814 | http->logType = LOG_TCP_HIT; |
34266cde | 815 | |
62e76326 | 816 | reqofs = 0; |
34266cde | 817 | |
62e76326 | 818 | tempBuffer.offset = http->out.offset; |
34266cde | 819 | |
0655fa4d | 820 | tempBuffer.length = next()->readBuffer.length; |
34266cde | 821 | |
0655fa4d | 822 | tempBuffer.data = next()->readBuffer.data; |
34266cde | 823 | |
86a2f789 | 824 | storeClientCopy(sc, http->storeEntry(), |
0655fa4d | 825 | tempBuffer, CacheHit, this); |
e6ccf245 | 826 | } |
827 | ||
828 | void | |
829 | clientReplyContext::purgeRequest() | |
edce4d98 | 830 | { |
bf8fe701 | 831 | debugs(88, 3, "Config2.onoff.enable_purge = " << |
832 | Config2.onoff.enable_purge); | |
62e76326 | 833 | |
edce4d98 | 834 | if (!Config2.onoff.enable_purge) { |
62e76326 | 835 | http->logType = LOG_TCP_DENIED; |
836 | ErrorState *err = | |
837 | clientBuildError(ERR_ACCESS_DENIED, HTTP_FORBIDDEN, NULL, | |
98242069 | 838 | &http->getConn()->peer.sin_addr, http->request); |
0655fa4d | 839 | startError(err); |
62e76326 | 840 | return; |
edce4d98 | 841 | } |
62e76326 | 842 | |
edce4d98 | 843 | /* Release both IP cache */ |
844 | ipcacheInvalidate(http->request->host); | |
845 | ||
e6ccf245 | 846 | if (!http->flags.purging) |
62e76326 | 847 | purgeRequestFindObjectToPurge(); |
e6ccf245 | 848 | else |
62e76326 | 849 | purgeDoMissPurge(); |
e6ccf245 | 850 | } |
851 | ||
852 | void | |
853 | clientReplyContext::purgeDoMissPurge() | |
854 | { | |
29b8d8d6 | 855 | http->logType = LOG_TCP_MISS; |
e6ccf245 | 856 | lookingforstore = 3; |
3b13a8fd | 857 | StoreEntry::getPublicByRequestMethod(this,http->request, METHOD_GET); |
e6ccf245 | 858 | } |
859 | ||
860 | void | |
3b13a8fd | 861 | clientReplyContext::purgeDoPurgeGet(StoreEntry *newEntry) |
e6ccf245 | 862 | { |
863 | assert (newEntry); | |
864 | /* Move to new() when that is created */ | |
865 | purgeStatus = HTTP_NOT_FOUND; | |
866 | ||
867 | if (!newEntry->isNull()) { | |
62e76326 | 868 | /* Release the cached URI */ |
bf8fe701 | 869 | debugs(88, 4, "clientPurgeRequest: GET '" << newEntry->url() << "'" ); |
5f33b71d | 870 | newEntry->release(); |
62e76326 | 871 | purgeStatus = HTTP_OK; |
edce4d98 | 872 | } |
62e76326 | 873 | |
e6ccf245 | 874 | lookingforstore = 4; |
3b13a8fd | 875 | StoreEntry::getPublicByRequestMethod(this, http->request, METHOD_HEAD); |
e6ccf245 | 876 | } |
877 | ||
878 | void | |
3b13a8fd | 879 | clientReplyContext::purgeDoPurgeHead(StoreEntry *newEntry) |
e6ccf245 | 880 | { |
4fc0ac76 | 881 | if (newEntry && !newEntry->isNull()) { |
bf8fe701 | 882 | debugs(88, 4, "clientPurgeRequest: HEAD '" << newEntry->url() << "'" ); |
5f33b71d | 883 | newEntry->release(); |
62e76326 | 884 | purgeStatus = HTTP_OK; |
edce4d98 | 885 | } |
62e76326 | 886 | |
edce4d98 | 887 | /* And for Vary, release the base URI if none of the headers was included in the request */ |
62e76326 | 888 | |
edce4d98 | 889 | if (http->request->vary_headers |
62e76326 | 890 | && !strstr(http->request->vary_headers, "=")) { |
891 | StoreEntry *entry = storeGetPublic(urlCanonical(http->request), METHOD_GET); | |
892 | ||
893 | if (entry) { | |
bf8fe701 | 894 | debugs(88, 4, "clientPurgeRequest: Vary GET '" << entry->url() << "'" ); |
5f33b71d | 895 | entry->release(); |
62e76326 | 896 | purgeStatus = HTTP_OK; |
897 | } | |
898 | ||
899 | entry = storeGetPublic(urlCanonical(http->request), METHOD_HEAD); | |
900 | ||
901 | if (entry) { | |
bf8fe701 | 902 | debugs(88, 4, "clientPurgeRequest: Vary HEAD '" << entry->url() << "'" ); |
5f33b71d | 903 | entry->release(); |
62e76326 | 904 | purgeStatus = HTTP_OK; |
905 | } | |
edce4d98 | 906 | } |
62e76326 | 907 | |
edce4d98 | 908 | /* |
909 | * Make a new entry to hold the reply to be written | |
910 | * to the client. | |
911 | */ | |
528b2c61 | 912 | /* FIXME: This doesn't need to go through the store. Simply |
913 | * push down the client chain | |
914 | */ | |
0655fa4d | 915 | createStoreEntry(http->request->method, request_flags()); |
62e76326 | 916 | |
0655fa4d | 917 | triggerInitialStoreRead(); |
62e76326 | 918 | |
7dc5f514 | 919 | HttpReply *rep = new HttpReply; |
62e76326 | 920 | |
450e0c10 | 921 | HttpVersion version(1,0); |
62e76326 | 922 | |
7dc5f514 | 923 | rep->setHeaders(version, purgeStatus, NULL, NULL, 0, 0, -1); |
62e76326 | 924 | |
7dc5f514 | 925 | http->storeEntry()->replaceHttpReply(rep); |
62e76326 | 926 | |
86a2f789 | 927 | http->storeEntry()->complete(); |
edce4d98 | 928 | } |
929 | ||
930 | void | |
0655fa4d | 931 | clientReplyContext::traceReply(clientStreamNode * node) |
edce4d98 | 932 | { |
e6ccf245 | 933 | clientStreamNode *next = (clientStreamNode *)node->node.next->data; |
528b2c61 | 934 | StoreIOBuffer tempBuffer; |
0655fa4d | 935 | assert(http->request->max_forwards == 0); |
936 | createStoreEntry(http->request->method, request_flags()); | |
937 | tempBuffer.offset = next->readBuffer.offset + headers_sz; | |
c8be6d7b | 938 | tempBuffer.length = next->readBuffer.length; |
939 | tempBuffer.data = next->readBuffer.data; | |
86a2f789 | 940 | storeClientCopy(sc, http->storeEntry(), |
0655fa4d | 941 | tempBuffer, SendMoreData, this); |
d88e3c49 | 942 | http->storeEntry()->releaseRequest(); |
3900307b | 943 | http->storeEntry()->buffer(); |
7dc5f514 | 944 | HttpReply *rep = new HttpReply; |
450e0c10 | 945 | HttpVersion version(1,0); |
06a5ae20 | 946 | rep->setHeaders(version, HTTP_OK, NULL, "text/plain", |
5cafad19 | 947 | http->request->prefixLen(), 0, squid_curtime); |
db237875 | 948 | http->storeEntry()->replaceHttpReply(rep); |
5cafad19 | 949 | http->request->swapOut(http->storeEntry()); |
86a2f789 | 950 | http->storeEntry()->complete(); |
edce4d98 | 951 | } |
952 | ||
953 | #define SENDING_BODY 0 | |
954 | #define SENDING_HDRSONLY 1 | |
955 | int | |
0655fa4d | 956 | clientReplyContext::checkTransferDone() |
edce4d98 | 957 | { |
86a2f789 | 958 | StoreEntry *entry = http->storeEntry(); |
62e76326 | 959 | |
edce4d98 | 960 | if (entry == NULL) |
62e76326 | 961 | return 0; |
962 | ||
963 | /* | |
edce4d98 | 964 | * For now, 'done_copying' is used for special cases like |
965 | * Range and HEAD requests. | |
966 | */ | |
0655fa4d | 967 | if (http->flags.done_copying) |
62e76326 | 968 | return 1; |
969 | ||
edce4d98 | 970 | /* |
971 | * Handle STORE_OK objects. | |
972 | * objectLen(entry) will be set proprely. | |
973 | * RC: Does objectLen(entry) include the Headers? | |
0e3be1ea | 974 | * RC: Yes. |
edce4d98 | 975 | */ |
976 | if (entry->store_status == STORE_OK) { | |
0655fa4d | 977 | return storeOKTransferDone(); |
e39b9382 | 978 | } else { |
0655fa4d | 979 | return storeNotOKTransferDone(); |
edce4d98 | 980 | } |
e39b9382 | 981 | } |
982 | ||
983 | int | |
984 | clientReplyContext::storeOKTransferDone() const | |
985 | { | |
47f6e231 | 986 | if (http->out.offset >= http->storeEntry()->objectLen() - headers_sz) { |
987 | debugs(88,3,HERE << "storeOKTransferDone " << | |
988 | " out.offset=" << http->out.offset << | |
989 | " objectLen()=" << http->storeEntry()->objectLen() << | |
990 | " headers_sz=" << headers_sz); | |
62e76326 | 991 | return 1; |
47f6e231 | 992 | } |
62e76326 | 993 | |
e39b9382 | 994 | return 0; |
995 | } | |
996 | ||
997 | int | |
998 | clientReplyContext::storeNotOKTransferDone() const | |
999 | { | |
edce4d98 | 1000 | /* |
1001 | * Now, handle STORE_PENDING objects | |
1002 | */ | |
86a2f789 | 1003 | MemObject *mem = http->storeEntry()->mem_obj; |
edce4d98 | 1004 | assert(mem != NULL); |
1005 | assert(http->request != NULL); | |
0e3be1ea | 1006 | /* mem->reply was wrong because it uses the UPSTREAM header length!!! */ |
0353e724 | 1007 | HttpReply const *reply = mem->getReply(); |
62e76326 | 1008 | |
e39b9382 | 1009 | if (headers_sz == 0) |
62e76326 | 1010 | /* haven't found end of headers yet */ |
1011 | return 0; | |
e39b9382 | 1012 | |
1013 | int sending = SENDING_BODY; | |
62e76326 | 1014 | |
e39b9382 | 1015 | if (reply->sline.status == HTTP_NO_CONTENT || |
62e76326 | 1016 | reply->sline.status == HTTP_NOT_MODIFIED || |
1017 | reply->sline.status < HTTP_OK || | |
1018 | http->request->method == METHOD_HEAD) | |
1019 | sending = SENDING_HDRSONLY; | |
1020 | ||
edce4d98 | 1021 | /* |
1022 | * Figure out how much data we are supposed to send. | |
1023 | * If we are sending a body and we don't have a content-length, | |
1024 | * then we must wait for the object to become STORE_OK. | |
1025 | */ | |
0e3be1ea | 1026 | if (reply->content_length < 0) |
62e76326 | 1027 | return 0; |
e39b9382 | 1028 | |
47f6e231 | 1029 | int64_t expectedLength = reply->content_length + http->out.headers_sz; |
62e76326 | 1030 | |
e39b9382 | 1031 | if (http->out.size < expectedLength) |
62e76326 | 1032 | return 0; |
47f6e231 | 1033 | else { |
1034 | debugs(88,3,HERE << "storeNotOKTransferDone " << | |
1035 | " out.size=" << http->out.size << | |
1036 | " expectedLength=" << expectedLength); | |
62e76326 | 1037 | return 1; |
47f6e231 | 1038 | } |
edce4d98 | 1039 | } |
1040 | ||
1041 | ||
edce4d98 | 1042 | /* A write has completed, what is the next status based on the |
1043 | * canonical request data? | |
1044 | * 1 something is wrong | |
1045 | * 0 nothing is wrong. | |
1046 | * | |
1047 | */ | |
1048 | int | |
59a1efb2 | 1049 | clientHttpRequestStatus(int fd, ClientHttpRequest const *http) |
edce4d98 | 1050 | { |
47f6e231 | 1051 | #if SIZEOF_INT64_T == 4 |
edce4d98 | 1052 | if (http->out.size > 0x7FFF0000) { |
47f6e231 | 1053 | debugs(88, 1, "WARNING: closing FD " << fd << " to prevent out.size counter overflow"); |
1054 | debugs(88, 1, "\tclient " << (inet_ntoa(http->getConn() != NULL ? http->getConn()->peer.sin_addr : no_addr))); | |
1055 | debugs(88, 1, "\treceived " << http->out.size << " bytes"); | |
1056 | debugs(88, 1, "\tURI " << http->log_uri); | |
62e76326 | 1057 | return 1; |
edce4d98 | 1058 | } |
62e76326 | 1059 | |
edce4d98 | 1060 | #endif |
47f6e231 | 1061 | #if SIZEOF_INT64_T == 4 |
edce4d98 | 1062 | if (http->out.offset > 0x7FFF0000) { |
3ec12e4a | 1063 | debugs(88, 1, "WARNING: closing FD " << fd < " to prevent out.offset counter overflow"); |
1064 | debugs(88, 1, "\tclient " << (inet_ntoa(http->getConn() != NULL ? http->getConn()->peer.sin_addr : no_addr))); | |
1065 | debugs(88, 1, "\treceived " << http->out.size << " bytes, offset " << http->out.offset); | |
1066 | debugs(88, 1, "\tURI " << http->log_uri); | |
62e76326 | 1067 | return 1; |
edce4d98 | 1068 | } |
62e76326 | 1069 | |
edce4d98 | 1070 | #endif |
1071 | return 0; | |
1072 | } | |
1073 | ||
62e76326 | 1074 | /* Preconditions: |
edce4d98 | 1075 | * *http is a valid structure. |
1076 | * fd is either -1, or an open fd. | |
1077 | * | |
1078 | * TODO: enumify this | |
1079 | * | |
1080 | * This function is used by any http request sink, to determine the status | |
1081 | * of the object. | |
1082 | */ | |
1083 | clientStream_status_t | |
59a1efb2 | 1084 | clientReplyStatus(clientStreamNode * aNode, ClientHttpRequest * http) |
edce4d98 | 1085 | { |
0655fa4d | 1086 | clientReplyContext *context = dynamic_cast<clientReplyContext *>(aNode->data.getRaw()); |
1087 | assert (context); | |
1088 | assert (context->http == http); | |
1089 | return context->replyStatus(); | |
1090 | } | |
1091 | ||
1092 | clientStream_status_t | |
1093 | clientReplyContext::replyStatus() | |
1094 | { | |
edce4d98 | 1095 | int done; |
1096 | /* Here because lower nodes don't need it */ | |
62e76326 | 1097 | |
86a2f789 | 1098 | if (http->storeEntry() == NULL) |
62e76326 | 1099 | return STREAM_FAILED; /* yuck, but what can we do? */ |
1100 | ||
86a2f789 | 1101 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) |
62e76326 | 1102 | /* TODO: Could upstream read errors (result.flags.error) be |
1103 | * lost, and result in undersize requests being considered | |
1104 | * complete. Should we tcp reset such connections ? | |
1105 | */ | |
1106 | return STREAM_FAILED; | |
1107 | ||
0655fa4d | 1108 | if ((done = checkTransferDone()) != 0 || flags.complete) { |
bf8fe701 | 1109 | debugs(88, 5, "clientReplyStatus: transfer is DONE"); |
62e76326 | 1110 | /* Ok we're finished, but how? */ |
1111 | ||
06a5ae20 | 1112 | if (http->storeEntry()->getReply()->bodySize(http->request->method) < 0) { |
bf8fe701 | 1113 | debugs(88, 5, "clientReplyStatus: closing, content_length < 0"); |
62e76326 | 1114 | return STREAM_FAILED; |
1115 | } | |
1116 | ||
1117 | if (!done) { | |
bf8fe701 | 1118 | debugs(88, 5, "clientReplyStatus: closing, !done, but read 0 bytes"); |
62e76326 | 1119 | return STREAM_FAILED; |
1120 | } | |
1121 | ||
0655fa4d | 1122 | if (!http->gotEnough()) { |
bf8fe701 | 1123 | debugs(88, 5, "clientReplyStatus: client didn't get all it expected"); |
62e76326 | 1124 | return STREAM_UNPLANNED_COMPLETE; |
1125 | } | |
1126 | ||
1127 | if (http->request->flags.proxy_keepalive) { | |
bf8fe701 | 1128 | debugs(88, 5, "clientReplyStatus: stream complete and can keepalive"); |
62e76326 | 1129 | return STREAM_COMPLETE; |
1130 | } | |
1131 | ||
bf8fe701 | 1132 | debugs(88, 5, "clientReplyStatus: stream was not expected to complete!"); |
62e76326 | 1133 | return STREAM_UNPLANNED_COMPLETE; |
edce4d98 | 1134 | } |
62e76326 | 1135 | |
b51aec66 | 1136 | if (http->isReplyBodyTooLarge(http->out.offset - 4096)) { |
1137 | /* 4096 is a margin for the HTTP headers included in out.offset */ | |
bf8fe701 | 1138 | debugs(88, 5, "clientReplyStatus: client reply body is too large"); |
62e76326 | 1139 | return STREAM_FAILED; |
0e3be1ea | 1140 | } |
62e76326 | 1141 | |
edce4d98 | 1142 | return STREAM_NONE; |
1143 | } | |
1144 | ||
62e76326 | 1145 | /* Responses with no body will not have a content-type header, |
edce4d98 | 1146 | * which breaks the rep_mime_type acl, which |
1147 | * coincidentally, is the most common acl for reply access lists. | |
1148 | * A better long term fix for this is to allow acl matchs on the various | |
1149 | * status codes, and then supply a default ruleset that puts these | |
1150 | * codes before any user defines access entries. That way the user | |
1151 | * can choose to block these responses where appropriate, but won't get | |
1152 | * mysterious breakages. | |
1153 | */ | |
0655fa4d | 1154 | bool |
1155 | clientReplyContext::alwaysAllowResponse(http_status sline) const | |
edce4d98 | 1156 | { |
4ef4b952 | 1157 | bool result; |
1158 | ||
edce4d98 | 1159 | switch (sline) { |
62e76326 | 1160 | |
edce4d98 | 1161 | case HTTP_CONTINUE: |
62e76326 | 1162 | |
edce4d98 | 1163 | case HTTP_SWITCHING_PROTOCOLS: |
62e76326 | 1164 | |
edce4d98 | 1165 | case HTTP_PROCESSING: |
62e76326 | 1166 | |
edce4d98 | 1167 | case HTTP_NO_CONTENT: |
62e76326 | 1168 | |
edce4d98 | 1169 | case HTTP_NOT_MODIFIED: |
4ef4b952 | 1170 | result = true; |
62e76326 | 1171 | break; |
1172 | ||
edce4d98 | 1173 | default: |
4ef4b952 | 1174 | result = false; |
edce4d98 | 1175 | } |
4ef4b952 | 1176 | |
1177 | return result; | |
edce4d98 | 1178 | } |
1179 | ||
1180 | /* | |
1181 | * filters out unwanted entries from original reply header | |
1182 | * adds extra entries if we have more info than origin server | |
1183 | * adds Squid specific entries | |
1184 | */ | |
0655fa4d | 1185 | void |
1186 | clientReplyContext::buildReplyHeader() | |
edce4d98 | 1187 | { |
7dc5f514 | 1188 | HttpHeader *hdr = &reply->header; |
c8be6d7b | 1189 | int is_hit = logTypeIsATcpHit(http->logType); |
190154cf | 1190 | HttpRequest *request = http->request; |
edce4d98 | 1191 | #if DONT_FILTER_THESE |
1192 | /* but you might want to if you run Squid as an HTTP accelerator */ | |
a9925b40 | 1193 | /* hdr->delById(HDR_ACCEPT_RANGES); */ |
1194 | hdr->delById(HDR_ETAG); | |
edce4d98 | 1195 | #endif |
62e76326 | 1196 | |
ba9fb01d | 1197 | // TODO: Should ESIInclude.cc that calls removeConnectionHeaderEntries |
1198 | // also delete HDR_PROXY_CONNECTION and HDR_KEEP_ALIVE like we do below? | |
1199 | ||
1200 | // XXX: Should HDR_PROXY_CONNECTION by studied instead of HDR_CONNECTION? | |
1201 | // httpHeaderHasConnDir does that but we do not. Is this is a bug? | |
a9925b40 | 1202 | hdr->delById(HDR_PROXY_CONNECTION); |
edce4d98 | 1203 | /* here: Keep-Alive is a field-name, not a connection directive! */ |
ba9fb01d | 1204 | hdr->delById(HDR_KEEP_ALIVE); |
edce4d98 | 1205 | /* remove Set-Cookie if a hit */ |
62e76326 | 1206 | |
edce4d98 | 1207 | if (is_hit) |
a9925b40 | 1208 | hdr->delById(HDR_SET_COOKIE); |
62e76326 | 1209 | |
7dc5f514 | 1210 | /* |
1211 | * Be sure to obey the Connection header | |
1212 | */ | |
1213 | reply->header.removeConnectionHeaderEntries(); | |
62e76326 | 1214 | |
1215 | // if (request->range) | |
7dc5f514 | 1216 | // clientBuildRangeHeader(http, reply); |
edce4d98 | 1217 | /* |
1218 | * Add a estimated Age header on cache hits. | |
1219 | */ | |
1220 | if (is_hit) { | |
62e76326 | 1221 | /* |
1222 | * Remove any existing Age header sent by upstream caches | |
1223 | * (note that the existing header is passed along unmodified | |
1224 | * on cache misses) | |
1225 | */ | |
a9925b40 | 1226 | hdr->delById(HDR_AGE); |
62e76326 | 1227 | /* |
1228 | * This adds the calculated object age. Note that the details of the | |
1229 | * age calculation is performed by adjusting the timestamp in | |
3900307b | 1230 | * StoreEntry::timestampsSet(), not here. |
62e76326 | 1231 | * |
1232 | * BROWSER WORKAROUND: IE sometimes hangs when receiving a 0 Age | |
1233 | * header, so don't use it unless there is a age to report. Please | |
1234 | * note that Age is only used to make a conservative estimation of | |
1235 | * the objects age, so a Age: 0 header does not add any useful | |
1236 | * information to the reply in any case. | |
1237 | */ | |
1238 | ||
86a2f789 | 1239 | if (NULL == http->storeEntry()) |
62e76326 | 1240 | (void) 0; |
86a2f789 | 1241 | else if (http->storeEntry()->timestamp < 0) |
62e76326 | 1242 | (void) 0; |
bbe58ab5 | 1243 | |
1244 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_SPECIAL)) { | |
a9925b40 | 1245 | hdr->delById(HDR_DATE); |
1246 | hdr->insertTime(HDR_DATE, squid_curtime); | |
bbe58ab5 | 1247 | } else if (http->storeEntry()->timestamp < squid_curtime) { |
a9925b40 | 1248 | hdr->putInt(HDR_AGE, |
1249 | squid_curtime - http->storeEntry()->timestamp); | |
62e76326 | 1250 | /* Signal old objects. NB: rfc 2616 is not clear, |
1251 | * by implication, on whether we should do this to all | |
1252 | * responses, or only cache hits. | |
1253 | * 14.46 states it ONLY applys for heuristically caclulated | |
1254 | * freshness values, 13.2.4 doesn't specify the same limitation. | |
1255 | * We interpret RFC 2616 under the combination. | |
1256 | */ | |
1257 | /* TODO: if maxage or s-maxage is present, don't do this */ | |
1258 | ||
86a2f789 | 1259 | if (squid_curtime - http->storeEntry()->timestamp >= 86400) { |
62e76326 | 1260 | char tempbuf[512]; |
1261 | snprintf (tempbuf, sizeof(tempbuf), "%s %s %s", | |
1262 | "113", ThisCache, | |
1263 | "This cache hit is still fresh and more than 1 day old"); | |
a9925b40 | 1264 | hdr->putStr(HDR_WARNING, tempbuf); |
62e76326 | 1265 | } |
1266 | } | |
528b2c61 | 1267 | |
edce4d98 | 1268 | } |
62e76326 | 1269 | |
0bd9aa82 | 1270 | /* Filter unproxyable authentication types */ |
ddd31ed3 | 1271 | if (http->logType != LOG_TCP_DENIED && |
a9925b40 | 1272 | (hdr->has(HDR_WWW_AUTHENTICATE) || hdr->has(HDR_PROXY_AUTHENTICATE))) { |
62e76326 | 1273 | HttpHeaderPos pos = HttpHeaderInitPos; |
1274 | HttpHeaderEntry *e; | |
1275 | ||
ba9fb01d | 1276 | int headers_deleted = 0; |
a9925b40 | 1277 | while ((e = hdr->getEntry(&pos))) { |
62e76326 | 1278 | if (e->id == HDR_WWW_AUTHENTICATE || e->id == HDR_PROXY_AUTHENTICATE) { |
30abd221 | 1279 | const char *value = e->value.buf(); |
62e76326 | 1280 | |
1281 | if ((strncasecmp(value, "NTLM", 4) == 0 && | |
1282 | (value[4] == '\0' || value[4] == ' ')) | |
1283 | || | |
1284 | (strncasecmp(value, "Negotiate", 9) == 0 && | |
1285 | (value[9] == '\0' || value[9] == ' '))) | |
ba9fb01d | 1286 | hdr->delAt(pos, headers_deleted); |
62e76326 | 1287 | } |
1288 | } | |
ba9fb01d | 1289 | if (headers_deleted) |
1290 | hdr->refreshMask(); | |
0bd9aa82 | 1291 | } |
62e76326 | 1292 | |
edce4d98 | 1293 | /* Handle authentication headers */ |
1294 | if (request->auth_user_request) | |
7dc5f514 | 1295 | authenticateFixHeader(reply, request->auth_user_request, request, |
62e76326 | 1296 | http->flags.accel, 0); |
1297 | ||
edce4d98 | 1298 | /* Append X-Cache */ |
1299 | httpHeaderPutStrf(hdr, HDR_X_CACHE, "%s from %s", | |
62e76326 | 1300 | is_hit ? "HIT" : "MISS", getMyHostname()); |
1301 | ||
edce4d98 | 1302 | #if USE_CACHE_DIGESTS |
1303 | /* Append X-Cache-Lookup: -- temporary hack, to be removed @?@ @?@ */ | |
1304 | httpHeaderPutStrf(hdr, HDR_X_CACHE_LOOKUP, "%s from %s:%d", | |
0655fa4d | 1305 | lookup_type ? lookup_type : "NONE", |
62e76326 | 1306 | getMyHostname(), getMyPort()); |
1307 | ||
edce4d98 | 1308 | #endif |
62e76326 | 1309 | |
7dc5f514 | 1310 | if (reply->bodySize(request->method) < 0) { |
bf8fe701 | 1311 | debugs(88, 3, "clientBuildReplyHeader: can't keep-alive, unknown body size" ); |
62e76326 | 1312 | request->flags.proxy_keepalive = 0; |
edce4d98 | 1313 | } |
62e76326 | 1314 | |
f5e45ad8 | 1315 | if (fdUsageHigh()&& !request->flags.must_keepalive) { |
bf8fe701 | 1316 | debugs(88, 3, "clientBuildReplyHeader: Not many unused FDs, can't keep-alive"); |
a1ca9253 | 1317 | request->flags.proxy_keepalive = 0; |
1318 | } | |
1319 | ||
58850d15 | 1320 | if (!Config.onoff.error_pconns && reply->sline.status >= 400 && !request->flags.must_keepalive) { |
bf8fe701 | 1321 | debugs(33, 3, "clientBuildReplyHeader: Error, don't keep-alive"); |
58850d15 | 1322 | request->flags.proxy_keepalive = 0; |
1323 | } | |
1324 | ||
f5e45ad8 | 1325 | if (!Config.onoff.client_pconns && !request->flags.must_keepalive) |
1326 | request->flags.proxy_keepalive = 0; | |
1327 | ||
4dea3fdd | 1328 | /* Append VIA */ |
92caea77 | 1329 | if (Config.onoff.via) { |
62e76326 | 1330 | LOCAL_ARRAY(char, bbuf, MAX_URL + 32); |
30abd221 | 1331 | String strVia; |
aaac15e6 | 1332 | hdr->getList(HDR_VIA, &strVia); |
62e76326 | 1333 | snprintf(bbuf, sizeof(bbuf), "%d.%d %s", |
7dc5f514 | 1334 | reply->sline.version.major, |
1335 | reply->sline.version.minor, | |
62e76326 | 1336 | ThisCache); |
1337 | strListAdd(&strVia, bbuf, ','); | |
a9925b40 | 1338 | hdr->delById(HDR_VIA); |
30abd221 | 1339 | hdr->putStr(HDR_VIA, strVia.buf()); |
c8be6d7b | 1340 | } |
edce4d98 | 1341 | /* Signal keep-alive if needed */ |
a9925b40 | 1342 | hdr->putStr(http->flags.accel ? HDR_CONNECTION : HDR_PROXY_CONNECTION, |
1343 | request->flags.proxy_keepalive ? "keep-alive" : "close"); | |
62e76326 | 1344 | |
edce4d98 | 1345 | #if ADD_X_REQUEST_URI |
1346 | /* | |
1347 | * Knowing the URI of the request is useful when debugging persistent | |
1348 | * connections in a client; we cannot guarantee the order of http headers, | |
1349 | * but X-Request-URI is likely to be the very last header to ease use from a | |
1350 | * debugger [hdr->entries.count-1]. | |
1351 | */ | |
a9925b40 | 1352 | hdr->putStr(HDR_X_REQUEST_URI, |
1353 | http->memOjbect()->url ? http->memObject()->url : http->uri); | |
62e76326 | 1354 | |
edce4d98 | 1355 | #endif |
62e76326 | 1356 | |
8c01ada0 | 1357 | httpHdrMangleList(hdr, request, ROR_REPLY); |
edce4d98 | 1358 | } |
1359 | ||
1360 | ||
0655fa4d | 1361 | void |
1362 | clientReplyContext::buildReply(const char *buf, size_t size) | |
edce4d98 | 1363 | { |
edce4d98 | 1364 | size_t k = headersEnd(buf, size); |
62e76326 | 1365 | |
0655fa4d | 1366 | if (!k) |
1367 | return; | |
1368 | ||
7dc5f514 | 1369 | assert(reply == NULL); |
0655fa4d | 1370 | |
7dc5f514 | 1371 | HttpReply *rep = new HttpReply; |
1372 | ||
1373 | reply = HTTPMSGLOCK(rep); | |
1374 | ||
1375 | if (!reply->parseCharBuf(buf, k)) { | |
62e76326 | 1376 | /* parsing failure, get rid of the invalid reply */ |
7dc5f514 | 1377 | HTTPMSGUNLOCK(reply); |
62e76326 | 1378 | |
0655fa4d | 1379 | if (http->request->range) { |
7dc5f514 | 1380 | debugs(0,0,HERE << "look for bug here"); |
62e76326 | 1381 | /* this will fail and destroy request->range */ |
7dc5f514 | 1382 | // clientBuildRangeHeader(http, reply); |
62e76326 | 1383 | } |
b51aec66 | 1384 | |
979da574 | 1385 | return; |
edce4d98 | 1386 | } |
62e76326 | 1387 | |
0655fa4d | 1388 | /* enforce 1.0 reply version */ |
7dc5f514 | 1389 | reply->sline.version = HttpVersion(1,0); |
0655fa4d | 1390 | |
1391 | /* do header conversions */ | |
1392 | buildReplyHeader(); | |
edce4d98 | 1393 | } |
1394 | ||
e6ccf245 | 1395 | void |
1396 | clientReplyContext::identifyStoreObject() | |
edce4d98 | 1397 | { |
190154cf | 1398 | HttpRequest *r = http->request; |
62e76326 | 1399 | |
e6ccf245 | 1400 | if (r->flags.cachable || r->flags.internal) { |
62e76326 | 1401 | lookingforstore = 5; |
1402 | StoreEntry::getPublicByRequest (this, r); | |
559da936 | 1403 | } else { |
62e76326 | 1404 | identifyFoundObject (NullStoreEntry::getInstance()); |
559da936 | 1405 | } |
e6ccf245 | 1406 | } |
1407 | ||
1408 | void | |
1409 | clientReplyContext::identifyFoundObject(StoreEntry *newEntry) | |
1410 | { | |
1411 | StoreEntry *e = newEntry; | |
190154cf | 1412 | HttpRequest *r = http->request; |
62e76326 | 1413 | |
e6ccf245 | 1414 | if (e->isNull()) { |
86a2f789 | 1415 | http->storeEntry(NULL); |
e6ccf245 | 1416 | } else { |
86a2f789 | 1417 | http->storeEntry(e); |
e6ccf245 | 1418 | } |
62e76326 | 1419 | |
86a2f789 | 1420 | e = http->storeEntry(); |
a12a049a | 1421 | /* Release IP-cache entries on reload */ |
1422 | ||
1423 | if (r->flags.nocache) { | |
1424 | ||
1425 | #if USE_DNSSERVERS | |
62e76326 | 1426 | |
62e76326 | 1427 | ipcacheInvalidate(r->host); |
1428 | ||
a12a049a | 1429 | #else |
1430 | ||
1431 | ipcacheInvalidateNegative(r->host); | |
1432 | ||
1433 | #endif /* USE_DNSSERVERS */ | |
1434 | ||
1435 | } | |
1436 | ||
edce4d98 | 1437 | #if HTTP_VIOLATIONS |
62e76326 | 1438 | |
a12a049a | 1439 | else if (r->flags.nocache_hack) { |
1440 | ||
1441 | #if USE_DNSSERVERS | |
1442 | ||
62e76326 | 1443 | ipcacheInvalidate(r->host); |
1444 | ||
a12a049a | 1445 | #else |
1446 | ||
1447 | ipcacheInvalidateNegative(r->host); | |
1448 | ||
1449 | #endif /* USE_DNSSERVERS */ | |
1450 | ||
1451 | } | |
1452 | ||
1453 | #endif /* HTTP_VIOLATIONS */ | |
edce4d98 | 1454 | #if USE_CACHE_DIGESTS |
62e76326 | 1455 | |
86a2f789 | 1456 | lookup_type = http->storeEntry() ? "HIT" : "MISS"; |
62e76326 | 1457 | |
edce4d98 | 1458 | #endif |
62e76326 | 1459 | |
86a2f789 | 1460 | if (NULL == http->storeEntry()) { |
62e76326 | 1461 | /* this object isn't in the cache */ |
bf8fe701 | 1462 | debugs(85, 3, "clientProcessRequest2: storeGet() MISS"); |
62e76326 | 1463 | http->logType = LOG_TCP_MISS; |
1464 | doGetMoreData(); | |
1465 | return; | |
edce4d98 | 1466 | } |
62e76326 | 1467 | |
edce4d98 | 1468 | if (Config.onoff.offline) { |
bf8fe701 | 1469 | debugs(85, 3, "clientProcessRequest2: offline HIT"); |
62e76326 | 1470 | http->logType = LOG_TCP_HIT; |
1471 | doGetMoreData(); | |
1472 | return; | |
edce4d98 | 1473 | } |
62e76326 | 1474 | |
edce4d98 | 1475 | if (http->redirect.status) { |
62e76326 | 1476 | /* force this to be a miss */ |
86a2f789 | 1477 | http->storeEntry(NULL); |
62e76326 | 1478 | http->logType = LOG_TCP_MISS; |
1479 | doGetMoreData(); | |
1480 | return; | |
edce4d98 | 1481 | } |
62e76326 | 1482 | |
3900307b | 1483 | if (!e->validToSend()) { |
bf8fe701 | 1484 | debugs(85, 3, "clientProcessRequest2: !storeEntryValidToSend MISS" ); |
86a2f789 | 1485 | http->storeEntry(NULL); |
62e76326 | 1486 | http->logType = LOG_TCP_MISS; |
1487 | doGetMoreData(); | |
1488 | return; | |
edce4d98 | 1489 | } |
62e76326 | 1490 | |
edce4d98 | 1491 | if (EBIT_TEST(e->flags, ENTRY_SPECIAL)) { |
62e76326 | 1492 | /* Special entries are always hits, no matter what the client says */ |
bf8fe701 | 1493 | debugs(85, 3, "clientProcessRequest2: ENTRY_SPECIAL HIT"); |
62e76326 | 1494 | http->logType = LOG_TCP_HIT; |
1495 | doGetMoreData(); | |
1496 | return; | |
edce4d98 | 1497 | } |
62e76326 | 1498 | |
edce4d98 | 1499 | if (r->flags.nocache) { |
bf8fe701 | 1500 | debugs(85, 3, "clientProcessRequest2: no-cache REFRESH MISS"); |
86a2f789 | 1501 | http->storeEntry(NULL); |
62e76326 | 1502 | http->logType = LOG_TCP_CLIENT_REFRESH_MISS; |
1503 | doGetMoreData(); | |
1504 | return; | |
edce4d98 | 1505 | } |
62e76326 | 1506 | |
bf8fe701 | 1507 | debugs(85, 3, "clientProcessRequest2: default HIT"); |
e6ccf245 | 1508 | http->logType = LOG_TCP_HIT; |
1509 | doGetMoreData(); | |
edce4d98 | 1510 | } |
1511 | ||
1512 | /* Request more data from the store for the client Stream | |
1513 | * This is *the* entry point to this module. | |
1514 | * | |
1515 | * Preconditions: | |
1516 | * This is the head of the list. | |
1517 | * There is at least one more node. | |
1518 | * data context is not null | |
1519 | */ | |
1520 | void | |
59a1efb2 | 1521 | clientGetMoreData(clientStreamNode * aNode, ClientHttpRequest * http) |
edce4d98 | 1522 | { |
edce4d98 | 1523 | /* Test preconditions */ |
e6ccf245 | 1524 | assert(aNode != NULL); |
1525 | assert(cbdataReferenceValid(aNode)); | |
e6ccf245 | 1526 | assert(aNode->node.prev == NULL); |
1527 | assert(aNode->node.next != NULL); | |
0655fa4d | 1528 | clientReplyContext *context = dynamic_cast<clientReplyContext *>(aNode->data.getRaw()); |
1529 | assert (context); | |
edce4d98 | 1530 | assert(context->http == http); |
1531 | ||
559da936 | 1532 | |
0655fa4d | 1533 | clientStreamNode *next = ( clientStreamNode *)aNode->node.next->data; |
62e76326 | 1534 | |
edce4d98 | 1535 | if (!context->ourNode) |
62e76326 | 1536 | context->ourNode = aNode; |
1537 | ||
e6ccf245 | 1538 | /* no cbdatareference, this is only used once, and safely */ |
edce4d98 | 1539 | if (context->flags.storelogiccomplete) { |
62e76326 | 1540 | StoreIOBuffer tempBuffer; |
1541 | tempBuffer.offset = next->readBuffer.offset + context->headers_sz; | |
1542 | tempBuffer.length = next->readBuffer.length; | |
1543 | tempBuffer.data = next->readBuffer.data; | |
1544 | ||
86a2f789 | 1545 | storeClientCopy(context->sc, http->storeEntry(), |
0655fa4d | 1546 | tempBuffer, clientReplyContext::SendMoreData, context); |
62e76326 | 1547 | return; |
edce4d98 | 1548 | } |
62e76326 | 1549 | |
edce4d98 | 1550 | if (context->http->request->method == METHOD_PURGE) { |
62e76326 | 1551 | context->purgeRequest(); |
1552 | return; | |
edce4d98 | 1553 | } |
62e76326 | 1554 | |
edce4d98 | 1555 | if (context->http->request->method == METHOD_TRACE) { |
62e76326 | 1556 | if (context->http->request->max_forwards == 0) { |
0655fa4d | 1557 | context->traceReply(aNode); |
62e76326 | 1558 | return; |
1559 | } | |
1560 | ||
1561 | /* continue forwarding, not finished yet. */ | |
1562 | http->logType = LOG_TCP_MISS; | |
1563 | ||
1564 | context->doGetMoreData(); | |
edce4d98 | 1565 | } else |
62e76326 | 1566 | context->identifyStoreObject(); |
e6ccf245 | 1567 | } |
1568 | ||
1569 | void | |
1570 | clientReplyContext::doGetMoreData() | |
1571 | { | |
edce4d98 | 1572 | /* We still have to do store logic processing - vary, cache hit etc */ |
86a2f789 | 1573 | if (http->storeEntry() != NULL) { |
62e76326 | 1574 | /* someone found the object in the cache for us */ |
1575 | StoreIOBuffer tempBuffer; | |
34266cde | 1576 | |
1577 | http->storeEntry()->lock() | |
1578 | ||
1579 | ; | |
62e76326 | 1580 | |
86a2f789 | 1581 | if (http->storeEntry()->mem_obj == NULL) { |
62e76326 | 1582 | /* |
1583 | * This if-block exists because we don't want to clobber | |
1584 | * a preexiting mem_obj->method value if the mem_obj | |
1585 | * already exists. For example, when a HEAD request | |
1586 | * is a cache hit for a GET response, we want to keep | |
1587 | * the method as GET. | |
1588 | */ | |
3900307b | 1589 | http->storeEntry()->createMemObject(http->uri, http->log_uri); |
86a2f789 | 1590 | http->storeEntry()->mem_obj->method = |
62e76326 | 1591 | http->request->method; |
1592 | } | |
1593 | ||
86a2f789 | 1594 | sc = storeClientListAdd(http->storeEntry(), this); |
edce4d98 | 1595 | #if DELAY_POOLS |
62e76326 | 1596 | |
1597 | sc->setDelayId(DelayId::DelayClient(http)); | |
edce4d98 | 1598 | #endif |
62e76326 | 1599 | |
1600 | assert(http->logType == LOG_TCP_HIT); | |
1601 | reqofs = 0; | |
1602 | /* guarantee nothing has been sent yet! */ | |
1603 | assert(http->out.size == 0); | |
1604 | assert(http->out.offset == 0); | |
1605 | tempBuffer.offset = reqofs; | |
1606 | tempBuffer.length = getNextNode()->readBuffer.length; | |
1607 | tempBuffer.data = getNextNode()->readBuffer.data; | |
559da936 | 1608 | storeClientCopy(sc, http->storeEntry(), tempBuffer, CacheHit, this); |
edce4d98 | 1609 | } else { |
62e76326 | 1610 | /* MISS CASE, http->logType is already set! */ |
0655fa4d | 1611 | processMiss(); |
edce4d98 | 1612 | } |
1613 | } | |
1614 | ||
1615 | /* the next node has removed itself from the stream. */ | |
1616 | void | |
59a1efb2 | 1617 | clientReplyDetach(clientStreamNode * node, ClientHttpRequest * http) |
edce4d98 | 1618 | { |
1619 | /* detach from the stream */ | |
edce4d98 | 1620 | clientStreamDetach(node, http); |
1621 | } | |
1622 | ||
1623 | /* | |
1624 | * accepts chunk of a http message in buf, parses prefix, filters headers and | |
1625 | * such, writes processed message to the message recipient | |
1626 | */ | |
1627 | void | |
0655fa4d | 1628 | clientReplyContext::SendMoreData(void *data, StoreIOBuffer result) |
edce4d98 | 1629 | { |
e6ccf245 | 1630 | clientReplyContext *context = static_cast<clientReplyContext *>(data); |
528b2c61 | 1631 | context->sendMoreData (result); |
1632 | } | |
1633 | ||
1634 | void | |
1635 | clientReplyContext::makeThisHead() | |
1636 | { | |
1637 | /* At least, I think thats what this does */ | |
1638 | dlinkDelete(&http->active, &ClientActiveRequests); | |
1639 | dlinkAdd(http, &http->active, &ClientActiveRequests); | |
1640 | } | |
1641 | ||
1642 | bool | |
1643 | clientReplyContext::errorInStream(StoreIOBuffer const &result, size_t const &sizeToProcess)const | |
1644 | { | |
1645 | return /* aborted request */ | |
86a2f789 | 1646 | (http->storeEntry() && EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) || |
62e76326 | 1647 | /* Upstream read error */ (result.flags.error) || |
1648 | /* Upstream EOF */ (sizeToProcess == 0); | |
528b2c61 | 1649 | } |
1650 | ||
1651 | void | |
1652 | clientReplyContext::sendStreamError(StoreIOBuffer const &result) | |
1653 | { | |
1654 | /* call clientWriteComplete so the client socket gets closed */ | |
1655 | /* We call into the stream, because we don't know that there is a | |
1656 | * client socket! | |
1657 | */ | |
bf8fe701 | 1658 | debugs(88, 5, "clientReplyContext::sendStreamError: A stream error has occured, marking as complete and sending no data."); |
528b2c61 | 1659 | StoreIOBuffer tempBuffer; |
1660 | flags.complete = 1; | |
1661 | tempBuffer.flags.error = result.flags.error; | |
1662 | clientStreamCallback((clientStreamNode*)http->client_stream.head->data, http, NULL, | |
62e76326 | 1663 | tempBuffer); |
528b2c61 | 1664 | } |
1665 | ||
1666 | void | |
1667 | clientReplyContext::pushStreamData(StoreIOBuffer const &result, char *source) | |
1668 | { | |
1669 | StoreIOBuffer tempBuffer; | |
62e76326 | 1670 | |
528b2c61 | 1671 | if (result.length == 0) { |
bf8fe701 | 1672 | debugs(88, 5, "clientReplyContext::pushStreamData: marking request as complete due to 0 length store result"); |
62e76326 | 1673 | flags.complete = 1; |
528b2c61 | 1674 | } |
62e76326 | 1675 | |
43ae1d95 | 1676 | assert(result.offset - headers_sz == next()->readBuffer.offset); |
528b2c61 | 1677 | tempBuffer.offset = result.offset - headers_sz; |
1678 | tempBuffer.length = result.length; | |
62e76326 | 1679 | |
43ae1d95 | 1680 | if (tempBuffer.length) |
1681 | tempBuffer.data = source; | |
62e76326 | 1682 | |
528b2c61 | 1683 | clientStreamCallback((clientStreamNode*)http->client_stream.head->data, http, NULL, |
62e76326 | 1684 | tempBuffer); |
528b2c61 | 1685 | } |
1686 | ||
1687 | clientStreamNode * | |
1688 | clientReplyContext::next() const | |
1689 | { | |
1690 | assert ( (clientStreamNode*)http->client_stream.head->next->data == getNextNode()); | |
1691 | return getNextNode(); | |
1692 | } | |
1693 | ||
1694 | void | |
0655fa4d | 1695 | clientReplyContext::waitForMoreData () |
528b2c61 | 1696 | { |
bf8fe701 | 1697 | debugs(88, 5, "clientReplyContext::waitForMoreData: Waiting for more data to parse reply headers in client side."); |
528b2c61 | 1698 | /* We don't have enough to parse the metadata yet */ |
1699 | /* TODO: the store should give us out of band metadata and | |
1700 | * obsolete this routine | |
1701 | */ | |
1702 | /* wait for more to arrive */ | |
528b2c61 | 1703 | startSendProcess(); |
1704 | } | |
1705 | ||
1706 | void | |
1707 | clientReplyContext::startSendProcess() | |
1708 | { | |
bf8fe701 | 1709 | debugs(88, 5, "clientReplyContext::startSendProcess: triggering store read to SendMoreData"); |
528b2c61 | 1710 | assert(reqofs <= HTTP_REQBUF_SZ); |
1711 | /* TODO: copy into the supplied buffer */ | |
1712 | StoreIOBuffer tempBuffer; | |
1713 | tempBuffer.offset = reqofs; | |
1714 | tempBuffer.length = next()->readBuffer.length - reqofs; | |
1715 | tempBuffer.data = next()->readBuffer.data + reqofs; | |
86a2f789 | 1716 | storeClientCopy(sc, http->storeEntry(), |
0655fa4d | 1717 | tempBuffer, SendMoreData, this); |
1718 | } | |
1719 | ||
b51aec66 | 1720 | /* |
1721 | * Calculates the maximum size allowed for an HTTP response | |
1722 | */ | |
1723 | void | |
1724 | clientReplyContext::buildMaxBodySize(HttpReply * reply) | |
1725 | { | |
ef1955a5 | 1726 | acl_size_t *l = Config.ReplyBodySize; |
1727 | ACLChecklist *ch; | |
b51aec66 | 1728 | |
8777d90e | 1729 | if (http->logType == LOG_TCP_DENIED) |
1730 | return; | |
1731 | ||
ef1955a5 | 1732 | ch = clientAclChecklistCreate(NULL, http); |
8777d90e | 1733 | |
7dc5f514 | 1734 | ch->reply = HTTPMSGLOCK(reply); |
ef1955a5 | 1735 | |
1736 | for (l = Config.ReplyBodySize; l; l = l -> next) { | |
7684c4b1 | 1737 | if (ch->matchAclListFast(l->aclList)) { |
ed013b6c | 1738 | if (l->size != -1) { |
4a7a3d56 | 1739 | debugs(58, 3, "clientReplyContext: Setting maxBodySize to " << l->size); |
ef1955a5 | 1740 | http->maxReplyBodySize(l->size); |
43cb430e | 1741 | } |
b51aec66 | 1742 | |
ef1955a5 | 1743 | break; |
1744 | } | |
b51aec66 | 1745 | } |
ef1955a5 | 1746 | |
1747 | delete ch; | |
b51aec66 | 1748 | } |
1749 | ||
4993f571 | 1750 | void |
1751 | clientReplyContext::processReplyAccess () | |
1752 | { | |
7dc5f514 | 1753 | assert(reply); |
1754 | buildMaxBodySize(reply); | |
62e76326 | 1755 | |
7dc5f514 | 1756 | if (http->isReplyBodyTooLarge(reply->content_length)) { |
62e76326 | 1757 | ErrorState *err = |
1758 | clientBuildError(ERR_TOO_BIG, HTTP_FORBIDDEN, NULL, | |
94a396a3 | 1759 | http->getConn() != NULL ? &http->getConn()->peer.sin_addr : &no_addr, |
62e76326 | 1760 | http->request); |
86a2f789 | 1761 | removeClientStoreReference(&sc, http); |
7dc5f514 | 1762 | HTTPMSGUNLOCK(reply); |
3c2c1d31 | 1763 | startError(err); |
62e76326 | 1764 | return; |
1765 | } | |
1766 | ||
7dc5f514 | 1767 | headers_sz = reply->hdr_sz; |
62e76326 | 1768 | ACLChecklist *replyChecklist; |
1769 | replyChecklist = clientAclChecklistCreate(Config.accessList.reply, http); | |
7dc5f514 | 1770 | replyChecklist->reply = HTTPMSGLOCK(reply); |
0655fa4d | 1771 | replyChecklist->nonBlockingCheck(ProcessReplyAccessResult, this); |
4993f571 | 1772 | } |
1773 | ||
1774 | void | |
0655fa4d | 1775 | clientReplyContext::ProcessReplyAccessResult (int rv, void *voidMe) |
4993f571 | 1776 | { |
1777 | clientReplyContext *me = static_cast<clientReplyContext *>(voidMe); | |
0655fa4d | 1778 | me->processReplyAccessResult(rv); |
4993f571 | 1779 | } |
1780 | ||
1781 | void | |
0655fa4d | 1782 | clientReplyContext::processReplyAccessResult(bool accessAllowed) |
4993f571 | 1783 | { |
bf8fe701 | 1784 | debugs(88, 2, "The reply for " << RequestMethodStr[http->request->method] |
1785 | << " " << http->uri << " is " | |
1786 | << ( accessAllowed ? "ALLOWED" : "DENIED") | |
1787 | << ", because it matched '" | |
1788 | << (AclMatchedName ? AclMatchedName : "NO ACL's") << "'" ); | |
62e76326 | 1789 | |
7dc5f514 | 1790 | if (!accessAllowed && reply->sline.status != HTTP_FORBIDDEN |
1791 | && !alwaysAllowResponse(reply->sline.status)) { | |
62e76326 | 1792 | /* the if above is slightly broken, but there is no way |
1793 | * to tell if this is a squid generated error page, or one from | |
1794 | * upstream at this point. */ | |
1795 | ErrorState *err; | |
0185bd6f | 1796 | err_type page_id; |
9ce7856a | 1797 | page_id = aclGetDenyInfoPage(&Config.denyInfoList, AclMatchedName, 1); |
0185bd6f | 1798 | |
1799 | if (page_id == ERR_NONE) | |
1800 | page_id = ERR_ACCESS_DENIED; | |
1801 | ||
62e76326 | 1802 | err = |
0185bd6f | 1803 | clientBuildError(page_id, HTTP_FORBIDDEN, NULL, |
94a396a3 | 1804 | http->getConn() != NULL ? &http->getConn()->peer.sin_addr : &no_addr, |
62e76326 | 1805 | http->request); |
0185bd6f | 1806 | |
86a2f789 | 1807 | removeClientStoreReference(&sc, http); |
0185bd6f | 1808 | |
7dc5f514 | 1809 | HTTPMSGUNLOCK(reply); |
0185bd6f | 1810 | |
3c2c1d31 | 1811 | startError(err); |
1812 | ||
c2cf9bea | 1813 | http->logType = LOG_TCP_DENIED_REPLY; |
0185bd6f | 1814 | |
62e76326 | 1815 | return; |
1816 | } | |
1817 | ||
0976f8db | 1818 | /* Ok, the reply is allowed, */ |
1819 | http->loggingEntry(http->storeEntry()); | |
1820 | ||
7dc5f514 | 1821 | ssize_t body_size = reqofs - reply->hdr_sz; |
0976f8db | 1822 | |
62e76326 | 1823 | assert(body_size >= 0); |
0976f8db | 1824 | |
bf8fe701 | 1825 | debugs(88, 3, "clientReplyContext::sendMoreData: Appending " << |
1826 | (int) body_size << " bytes after " << reply->hdr_sz << | |
1827 | " bytes of headers"); | |
0976f8db | 1828 | |
43ae1d95 | 1829 | #if ESI |
62e76326 | 1830 | |
7dc5f514 | 1831 | if (http->flags.accel && reply->sline.status != HTTP_FORBIDDEN && |
1832 | !alwaysAllowResponse(reply->sline.status) && | |
1833 | esiEnableProcessing(reply)) { | |
bf8fe701 | 1834 | debugs(88, 2, "Enabling ESI processing for " << http->uri); |
43ae1d95 | 1835 | clientStreamInsertHead(&http->client_stream, esiStreamRead, |
1836 | esiProcessStream, esiStreamDetach, esiStreamStatus, NULL); | |
1837 | } | |
1838 | ||
5ef38a13 | 1839 | #endif |
1840 | ||
62e76326 | 1841 | if (http->request->method == METHOD_HEAD) { |
1842 | /* do not forward body for HEAD replies */ | |
1843 | body_size = 0; | |
1844 | http->flags.done_copying = 1; | |
1845 | flags.complete = 1; | |
1846 | } | |
1847 | ||
1848 | assert (!flags.headersSent); | |
1849 | flags.headersSent = true; | |
1850 | ||
1851 | StoreIOBuffer tempBuffer; | |
1852 | char *buf = next()->readBuffer.data; | |
7dc5f514 | 1853 | char *body_buf = buf + reply->hdr_sz; |
62e76326 | 1854 | |
49ea0125 | 1855 | //Server side may disable ranges under some circumstances. |
1856 | ||
1857 | if ((!http->request->range)) | |
1858 | next()->readBuffer.offset = 0; | |
1859 | ||
62e76326 | 1860 | if (next()->readBuffer.offset != 0) { |
1861 | if (next()->readBuffer.offset > body_size) { | |
2324cda2 | 1862 | /* Can't use any of the body we received. send nothing */ |
62e76326 | 1863 | tempBuffer.length = 0; |
1864 | tempBuffer.data = NULL; | |
1865 | } else { | |
1866 | tempBuffer.length = body_size - next()->readBuffer.offset; | |
1867 | tempBuffer.data = body_buf + next()->readBuffer.offset; | |
1868 | } | |
1869 | } else { | |
1870 | tempBuffer.length = body_size; | |
1871 | tempBuffer.data = body_buf; | |
1872 | } | |
1873 | ||
0655fa4d | 1874 | /* TODO??: move the data in the buffer back by the request header size */ |
62e76326 | 1875 | clientStreamCallback((clientStreamNode *)http->client_stream.head->data, |
7dc5f514 | 1876 | http, reply, tempBuffer); |
62e76326 | 1877 | |
1878 | return; | |
4993f571 | 1879 | } |
1880 | ||
528b2c61 | 1881 | void |
1882 | clientReplyContext::sendMoreData (StoreIOBuffer result) | |
1883 | { | |
50c09fc4 | 1884 | if (deleting) |
1885 | return; | |
1886 | ||
86a2f789 | 1887 | StoreEntry *entry = http->storeEntry(); |
50c09fc4 | 1888 | |
a2ac85d9 | 1889 | ConnStateData::Pointer conn = http->getConn(); |
50c09fc4 | 1890 | |
94a396a3 | 1891 | int fd = conn != NULL ? conn->fd : -1; |
50c09fc4 | 1892 | |
528b2c61 | 1893 | char *buf = next()->readBuffer.data; |
50c09fc4 | 1894 | |
c8be6d7b | 1895 | char *body_buf = buf; |
edce4d98 | 1896 | |
62e76326 | 1897 | /* This is always valid until we get the headers as metadata from |
528b2c61 | 1898 | * storeClientCopy. |
1899 | * Then it becomes reqofs == next->readBuffer.offset() | |
af29fa86 | 1900 | */ |
528b2c61 | 1901 | assert(reqofs == 0 || flags.storelogiccomplete); |
af29fa86 | 1902 | |
528b2c61 | 1903 | if (flags.headersSent && buf != result.data) { |
62e76326 | 1904 | /* we've got to copy some data */ |
1905 | assert(result.length <= next()->readBuffer.length); | |
1906 | xmemcpy(buf, result.data, result.length); | |
1907 | body_buf = buf; | |
528b2c61 | 1908 | } else if (!flags.headersSent && |
62e76326 | 1909 | buf + reqofs !=result.data) { |
1910 | /* we've got to copy some data */ | |
1911 | assert(result.length + reqofs <= next()->readBuffer.length); | |
1912 | xmemcpy(buf + reqofs, result.data, result.length); | |
1913 | body_buf = buf; | |
edce4d98 | 1914 | } |
62e76326 | 1915 | |
edce4d98 | 1916 | /* We've got the final data to start pushing... */ |
528b2c61 | 1917 | flags.storelogiccomplete = 1; |
edce4d98 | 1918 | |
4993f571 | 1919 | reqofs += result.length; |
1920 | ||
1921 | assert(reqofs <= HTTP_REQBUF_SZ || flags.headersSent); | |
62e76326 | 1922 | |
edce4d98 | 1923 | assert(http->request != NULL); |
62e76326 | 1924 | |
edce4d98 | 1925 | /* ESI TODO: remove this assert once everything is stable */ |
1926 | assert(http->client_stream.head->data | |
62e76326 | 1927 | && cbdataReferenceValid(http->client_stream.head->data)); |
528b2c61 | 1928 | |
1929 | makeThisHead(); | |
62e76326 | 1930 | |
bf8fe701 | 1931 | debugs(88, 5, "clientReplyContext::sendMoreData: " << http->uri << ", " << |
47f6e231 | 1932 | reqofs << " bytes (" << result.length << |
bf8fe701 | 1933 | " new bytes)"); |
47f6e231 | 1934 | debugs(88, 5, "clientReplyContext::sendMoreData:" |
1935 | " FD " << fd << | |
1936 | " '" << entry->url() << "'" << | |
1937 | " out.offset=" << http->out.offset); | |
528b2c61 | 1938 | |
edce4d98 | 1939 | /* update size of the request */ |
4993f571 | 1940 | reqsize = reqofs; |
62e76326 | 1941 | |
4993f571 | 1942 | if (errorInStream(result, reqofs)) { |
62e76326 | 1943 | sendStreamError(result); |
1944 | return; | |
edce4d98 | 1945 | } |
528b2c61 | 1946 | |
1947 | if (flags.headersSent) { | |
62e76326 | 1948 | pushStreamData (result, buf); |
1949 | return; | |
edce4d98 | 1950 | } |
62e76326 | 1951 | |
0655fa4d | 1952 | buildReply(buf, reqofs); |
4993f571 | 1953 | ssize_t body_size = reqofs; |
62e76326 | 1954 | |
7dc5f514 | 1955 | if (reply) { |
21b92762 | 1956 | |
1957 | /* handle headers */ | |
1958 | ||
1959 | if (Config.onoff.log_mime_hdrs) { | |
1960 | size_t k; | |
1961 | ||
1962 | if ((k = headersEnd(buf, reqofs))) { | |
1963 | safe_free(http->al.headers.reply); | |
1964 | http->al.headers.reply = (char *)xcalloc(k + 1, 1); | |
1965 | xstrncpy(http->al.headers.reply, buf, k); | |
1966 | } | |
1967 | } | |
1968 | ||
62e76326 | 1969 | holdingBuffer = result; |
7dc5f514 | 1970 | processReplyAccess(); |
62e76326 | 1971 | return; |
43ae1d95 | 1972 | |
4993f571 | 1973 | } else if (reqofs < HTTP_REQBUF_SZ && entry->store_status == STORE_PENDING) { |
0655fa4d | 1974 | waitForMoreData(); |
62e76326 | 1975 | return; |
528b2c61 | 1976 | } else if (http->request->method == METHOD_HEAD) { |
62e76326 | 1977 | /* |
1978 | * If we are here, then store_status == STORE_OK and it | |
1979 | * seems we have a HEAD repsponse which is missing the | |
1980 | * empty end-of-headers line (home.mira.net, phttpd/0.99.72 | |
0655fa4d | 1981 | * does this). Because buildReply() fails we just |
62e76326 | 1982 | * call this reply a body, set the done_copying flag and |
1983 | * continue... | |
1984 | */ | |
1985 | /* RBC: Note that this is seriously broken, as we *need* the | |
1986 | * metadata to allow further client modules to work. As such | |
1987 | * webservers are seriously broken, this is probably not | |
1988 | * going to get fixed.. perhapos we should remove it? | |
1989 | */ | |
bf8fe701 | 1990 | debugs(88, 0, "Broken head response - probably phttpd/0.99.72"); |
62e76326 | 1991 | http->flags.done_copying = 1; |
1992 | flags.complete = 1; | |
1993 | /* | |
1994 | * And as this is a malformed HTTP reply we cannot keep | |
1995 | * the connection persistent | |
1996 | */ | |
1997 | http->request->flags.proxy_keepalive = 0; | |
1998 | ||
62e76326 | 1999 | assert(body_buf && body_size); |
0655fa4d | 2000 | StoreIOBuffer tempBuffer (body_size, 0 ,body_buf); |
62e76326 | 2001 | clientStreamCallback((clientStreamNode *)http->client_stream.head->data, |
2002 | http, NULL, tempBuffer); | |
528b2c61 | 2003 | } else { |
bf8fe701 | 2004 | debugs(88, 0, "clientReplyContext::sendMoreData: Unable to parse reply headers within a single HTTP_REQBUF_SZ length buffer"); |
62e76326 | 2005 | StoreIOBuffer tempBuffer; |
2006 | tempBuffer.flags.error = 1; | |
0655fa4d | 2007 | /* XXX FIXME: make an html error page here */ |
62e76326 | 2008 | sendStreamError(tempBuffer); |
2009 | return; | |
edce4d98 | 2010 | } |
528b2c61 | 2011 | fatal ("clientReplyContext::sendMoreData: Unreachable code reached \n"); |
edce4d98 | 2012 | } |
2013 | ||
62e76326 | 2014 | |
edce4d98 | 2015 | |
2016 | /* Using this breaks the client layering just a little! | |
2017 | */ | |
0655fa4d | 2018 | void |
2019 | clientReplyContext::createStoreEntry(method_t m, request_flags flags) | |
edce4d98 | 2020 | { |
0655fa4d | 2021 | assert(http != NULL); |
edce4d98 | 2022 | /* |
2023 | * For erroneous requests, we might not have a h->request, | |
2024 | * so make a fake one. | |
2025 | */ | |
62e76326 | 2026 | |
0655fa4d | 2027 | if (http->request == NULL) |
6dd9f4bd | 2028 | http->request = HTTPMSGLOCK(new HttpRequest(m, PROTO_NONE, null_string)); |
62e76326 | 2029 | |
0655fa4d | 2030 | StoreEntry *e = storeCreateEntry(http->uri, http->log_uri, flags, m); |
62e76326 | 2031 | |
0655fa4d | 2032 | sc = storeClientListAdd(e, this); |
62e76326 | 2033 | |
edce4d98 | 2034 | #if DELAY_POOLS |
62e76326 | 2035 | |
0655fa4d | 2036 | sc->setDelayId(DelayId::DelayClient(http)); |
62e76326 | 2037 | |
edce4d98 | 2038 | #endif |
62e76326 | 2039 | |
0655fa4d | 2040 | reqofs = 0; |
62e76326 | 2041 | |
0655fa4d | 2042 | reqsize = 0; |
62e76326 | 2043 | |
edce4d98 | 2044 | /* I don't think this is actually needed! -- adrian */ |
0655fa4d | 2045 | /* http->reqbuf = http->norm_reqbuf; */ |
2046 | // assert(http->reqbuf == http->norm_reqbuf); | |
edce4d98 | 2047 | /* The next line is illegal because we don't know if the client stream |
2048 | * buffers have been set up | |
2049 | */ | |
0655fa4d | 2050 | // storeClientCopy(http->sc, e, 0, HTTP_REQBUF_SZ, http->reqbuf, |
2051 | // SendMoreData, this); | |
edce4d98 | 2052 | /* So, we mark the store logic as complete */ |
0655fa4d | 2053 | this->flags.storelogiccomplete = 1; |
62e76326 | 2054 | |
edce4d98 | 2055 | /* and get the caller to request a read, from whereever they are */ |
62e76326 | 2056 | /* NOTE: after ANY data flows down the pipe, even one step, |
edce4d98 | 2057 | * this function CAN NOT be used to manage errors |
2058 | */ | |
86a2f789 | 2059 | http->storeEntry(e); |
edce4d98 | 2060 | } |
2061 | ||
2062 | ErrorState * | |
2063 | clientBuildError(err_type page_id, http_status status, char const *url, | |
62e76326 | 2064 | |
ddfcbc22 | 2065 | struct IN_ADDR * src_addr, HttpRequest * request) |
edce4d98 | 2066 | { |
2cc81f1f | 2067 | ErrorState *err = errorCon(page_id, status, request); |
edce4d98 | 2068 | err->src_addr = *src_addr; |
62e76326 | 2069 | |
edce4d98 | 2070 | if (url) |
62e76326 | 2071 | err->url = xstrdup(url); |
2072 | ||
edce4d98 | 2073 | return err; |
2074 | } |