]>
Commit | Line | Data |
---|---|---|
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" |
2d2b0bb7 | 49 | #include "auth/UserRequest.h" |
f41735ea | 50 | #if USE_SQUID_ESI |
f99c2cfe | 51 | #include "esi/Esi.h" |
43ae1d95 | 52 | #endif |
528b2c61 | 53 | #include "MemObject.h" |
7172612f | 54 | #include "fde.h" |
127dce76 AR |
55 | #include "acl/FilledChecklist.h" |
56 | #include "acl/Gadgets.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 | |
a5c8d64d AJ |
89 | /** Create an error in the store awaiting the client side to read it. |
90 | * | |
91 | * This may be better placed in the clientStream logic, but it has not been | |
0655fa4d | 92 | * relocated there yet |
93 | */ | |
edce4d98 | 94 | void |
0655fa4d | 95 | clientReplyContext::setReplyToError( |
60745f24 | 96 | err_type err, http_status status, const HttpRequestMethod& method, char const *uri, |
e57c1885 | 97 | IpAddress &addr, HttpRequest * failedrequest, const char *unparsedrequest, |
76f142cd | 98 | AuthUserRequest * auth_user_request) |
edce4d98 | 99 | { |
edce4d98 | 100 | ErrorState *errstate = |
62e76326 | 101 | clientBuildError(err, status, uri, addr, failedrequest); |
102 | ||
edce4d98 | 103 | if (unparsedrequest) |
62e76326 | 104 | errstate->request_hdrs = xstrdup(unparsedrequest); |
edce4d98 | 105 | |
0655fa4d | 106 | if (status == HTTP_NOT_IMPLEMENTED && http->request) |
62e76326 | 107 | /* prevent confusion over whether we default to persistent or not */ |
0655fa4d | 108 | http->request->flags.proxy_keepalive = 0; |
62e76326 | 109 | |
0655fa4d | 110 | http->al.http.code = errstate->httpStatus; |
edce4d98 | 111 | |
0655fa4d | 112 | createStoreEntry(method, request_flags()); |
62e76326 | 113 | |
26ac0430 | 114 | if (auth_user_request) { |
62e76326 | 115 | errstate->auth_user_request = auth_user_request; |
26ac0430 | 116 | AUTHUSERREQUESTLOCK(errstate->auth_user_request, "errstate"); |
edce4d98 | 117 | } |
62e76326 | 118 | |
edce4d98 | 119 | assert(errstate->callback_data == NULL); |
86a2f789 | 120 | errorAppendEntry(http->storeEntry(), errstate); |
edce4d98 | 121 | /* Now the caller reads to get this */ |
122 | } | |
123 | ||
124 | void | |
0655fa4d | 125 | clientReplyContext::removeStoreReference(store_client ** scp, |
126 | StoreEntry ** ep) | |
edce4d98 | 127 | { |
128 | StoreEntry *e; | |
129 | store_client *sc = *scp; | |
62e76326 | 130 | |
edce4d98 | 131 | if ((e = *ep) != NULL) { |
62e76326 | 132 | *ep = NULL; |
0655fa4d | 133 | storeUnregister(sc, e, this); |
62e76326 | 134 | *scp = NULL; |
97b5e68f | 135 | e->unlock(); |
edce4d98 | 136 | } |
137 | } | |
138 | ||
86a2f789 | 139 | void |
140 | clientReplyContext::removeClientStoreReference(store_client **scp, ClientHttpRequest *http) | |
141 | { | |
142 | StoreEntry *reference = http->storeEntry(); | |
143 | removeStoreReference(scp, &reference); | |
144 | http->storeEntry(reference); | |
145 | } | |
146 | ||
e6ccf245 | 147 | void * |
a695955b | 148 | clientReplyContext::operator new (size_t byteCount) |
e6ccf245 | 149 | { |
150 | /* derived classes with different sizes must implement their own new */ | |
151 | assert (byteCount == sizeof (clientReplyContext)); | |
0655fa4d | 152 | CBDATA_INIT_TYPE(clientReplyContext); |
e6ccf245 | 153 | return cbdataAlloc(clientReplyContext); |
154 | } | |
155 | ||
156 | void | |
157 | clientReplyContext::operator delete (void *address) | |
158 | { | |
a50bfe93 | 159 | clientReplyContext * tmp = (clientReplyContext *)address; |
160 | cbdataFree (tmp); | |
e6ccf245 | 161 | } |
162 | ||
edce4d98 | 163 | void |
0655fa4d | 164 | clientReplyContext::saveState() |
edce4d98 | 165 | { |
e6ccf245 | 166 | assert(old_sc == NULL); |
bf8fe701 | 167 | debugs(88, 3, "clientReplyContext::saveState: saving store context"); |
86a2f789 | 168 | old_entry = http->storeEntry(); |
e6ccf245 | 169 | old_sc = sc; |
170 | old_reqsize = reqsize; | |
171 | tempBuffer.offset = reqofs; | |
edce4d98 | 172 | /* Prevent accessing the now saved entries */ |
86a2f789 | 173 | http->storeEntry(NULL); |
e6ccf245 | 174 | sc = NULL; |
175 | reqsize = 0; | |
176 | reqofs = 0; | |
edce4d98 | 177 | } |
178 | ||
179 | void | |
0655fa4d | 180 | clientReplyContext::restoreState() |
edce4d98 | 181 | { |
e6ccf245 | 182 | assert(old_sc != NULL); |
bf8fe701 | 183 | debugs(88, 3, "clientReplyContext::restoreState: Restoring store context"); |
86a2f789 | 184 | removeClientStoreReference(&sc, http); |
185 | http->storeEntry(old_entry); | |
e6ccf245 | 186 | sc = old_sc; |
187 | reqsize = old_reqsize; | |
188 | reqofs = tempBuffer.offset; | |
edce4d98 | 189 | /* Prevent accessed the old saved entries */ |
0655fa4d | 190 | old_entry = NULL; |
e6ccf245 | 191 | old_sc = NULL; |
192 | old_reqsize = 0; | |
193 | tempBuffer.offset = 0; | |
c8be6d7b | 194 | } |
195 | ||
196 | void | |
0655fa4d | 197 | clientReplyContext::startError(ErrorState * err) |
c8be6d7b | 198 | { |
0655fa4d | 199 | createStoreEntry(http->request->method, request_flags()); |
200 | triggerInitialStoreRead(); | |
86a2f789 | 201 | errorAppendEntry(http->storeEntry(), err); |
edce4d98 | 202 | } |
203 | ||
e6ccf245 | 204 | clientStreamNode * |
528b2c61 | 205 | clientReplyContext::getNextNode() const |
e6ccf245 | 206 | { |
62e76326 | 207 | return (clientStreamNode *)ourNode->node.next->data; |
e6ccf245 | 208 | } |
209 | ||
62e76326 | 210 | /* This function is wrong - the client parameters don't include the |
528b2c61 | 211 | * header offset |
212 | */ | |
c8be6d7b | 213 | void |
0655fa4d | 214 | clientReplyContext::triggerInitialStoreRead() |
c8be6d7b | 215 | { |
0655fa4d | 216 | /* when confident, 0 becomes reqofs, and then this factors into |
26ac0430 | 217 | * startSendProcess |
528b2c61 | 218 | */ |
0655fa4d | 219 | assert(reqofs == 0); |
dd272b8e | 220 | StoreIOBuffer tempBuffer (next()->readBuffer.length, 0, next()->readBuffer.data); |
86a2f789 | 221 | storeClientCopy(sc, http->storeEntry(), tempBuffer, SendMoreData, this); |
c8be6d7b | 222 | } |
edce4d98 | 223 | |
224 | /* there is an expired entry in the store. | |
225 | * setup a temporary buffer area and perform an IMS to the origin | |
226 | */ | |
0655fa4d | 227 | void |
228 | clientReplyContext::processExpired() | |
edce4d98 | 229 | { |
edce4d98 | 230 | char *url = http->uri; |
231 | StoreEntry *entry = NULL; | |
bf8fe701 | 232 | debugs(88, 3, "clientReplyContext::processExpired: '" << http->uri << "'"); |
86a2f789 | 233 | assert(http->storeEntry()->lastmod >= 0); |
edce4d98 | 234 | /* |
235 | * check if we are allowed to contact other servers | |
26ac0430 | 236 | * @?@: Instead of a 504 (Gateway Timeout) reply, we may want to return |
edce4d98 | 237 | * a stale entry *if* it matches client requirements |
238 | */ | |
62e76326 | 239 | |
0655fa4d | 240 | if (http->onlyIfCached()) { |
241 | processOnlyIfCachedMiss(); | |
62e76326 | 242 | return; |
edce4d98 | 243 | } |
62e76326 | 244 | |
edce4d98 | 245 | http->request->flags.refresh = 1; |
246 | #if STORE_CLIENT_LIST_DEBUG | |
c8be6d7b | 247 | /* Prevent a race with the store client memory free routines |
edce4d98 | 248 | */ |
0655fa4d | 249 | assert(storeClientIsThisAClient(sc, this)); |
edce4d98 | 250 | #endif |
251 | /* Prepare to make a new temporary request */ | |
0655fa4d | 252 | saveState(); |
edce4d98 | 253 | entry = storeCreateEntry(url, |
62e76326 | 254 | http->log_uri, http->request->flags, http->request->method); |
34266cde | 255 | /* NOTE, don't call StoreEntry->lock(), storeCreateEntry() does it */ |
0655fa4d | 256 | sc = storeClientListAdd(entry, this); |
edce4d98 | 257 | #if DELAY_POOLS |
258 | /* delay_id is already set on original store client */ | |
0655fa4d | 259 | sc->setDelayId(DelayId::DelayClient(http)); |
edce4d98 | 260 | #endif |
62e76326 | 261 | |
0655fa4d | 262 | http->request->lastmod = old_entry->lastmod; |
4a7a3d56 | 263 | debugs(88, 5, "clientReplyContext::processExpired : lastmod " << entry->lastmod ); |
86a2f789 | 264 | http->storeEntry(entry); |
c8be6d7b | 265 | assert(http->out.offset == 0); |
b2d22df6 | 266 | |
267 | /* | |
268 | * A refcounted pointer so that FwdState stays around as long as | |
269 | * this clientReplyContext does | |
270 | */ | |
94a396a3 | 271 | FwdState::fwdStart(http->getConn() != NULL ? http->getConn()->fd : -1, |
be0c6690 | 272 | http->storeEntry(), |
273 | http->request); | |
edce4d98 | 274 | /* Register with storage manager to receive updates when data comes in. */ |
62e76326 | 275 | |
edce4d98 | 276 | if (EBIT_TEST(entry->flags, ENTRY_ABORTED)) |
bf8fe701 | 277 | debugs(88, 0, "clientReplyContext::processExpired: Found ENTRY_ABORTED object"); |
62e76326 | 278 | |
c8be6d7b | 279 | { |
62e76326 | 280 | /* start counting the length from 0 */ |
0655fa4d | 281 | StoreIOBuffer tempBuffer(HTTP_REQBUF_SZ, 0, tempbuf); |
282 | storeClientCopy(sc, entry, tempBuffer, HandleIMSReply, this); | |
edce4d98 | 283 | } |
284 | } | |
285 | ||
edce4d98 | 286 | |
528b2c61 | 287 | void |
288 | clientReplyContext::sendClientUpstreamResponse() | |
289 | { | |
290 | StoreIOBuffer tempresult; | |
0655fa4d | 291 | removeStoreReference(&old_sc, &old_entry); |
2324cda2 | 292 | /* here the data to send is the data we just received */ |
528b2c61 | 293 | tempBuffer.offset = 0; |
294 | old_reqsize = 0; | |
0655fa4d | 295 | /* sendMoreData tracks the offset as well. |
528b2c61 | 296 | * Force it back to zero */ |
297 | reqofs = 0; | |
86a2f789 | 298 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 299 | /* TODO: provide sendMoreData with the ready parsed reply */ |
528b2c61 | 300 | tempresult.length = reqsize; |
301 | tempresult.data = tempbuf; | |
0655fa4d | 302 | sendMoreData(tempresult); |
528b2c61 | 303 | } |
304 | ||
edce4d98 | 305 | void |
0655fa4d | 306 | clientReplyContext::HandleIMSReply(void *data, StoreIOBuffer result) |
edce4d98 | 307 | { |
e6ccf245 | 308 | clientReplyContext *context = (clientReplyContext *)data; |
0655fa4d | 309 | context->handleIMSReply(result); |
310 | } | |
62e76326 | 311 | |
0655fa4d | 312 | void |
313 | clientReplyContext::sendClientOldEntry() | |
314 | { | |
315 | /* Get the old request back */ | |
316 | restoreState(); | |
317 | /* here the data to send is in the next nodes buffers already */ | |
86a2f789 | 318 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 319 | /* sendMoreData tracks the offset as well. |
320 | * Force it back to zero */ | |
321 | reqofs = 0; | |
322 | StoreIOBuffer tempresult (reqsize, reqofs, next()->readBuffer.data); | |
323 | sendMoreData(tempresult); | |
324 | } | |
62e76326 | 325 | |
1d7ab0f4 | 326 | /* This is the workhorse of the HandleIMSReply callback. |
327 | * | |
328 | * It is called when we've got data back from the origin following our | |
329 | * IMS request to revalidate a stale entry. | |
330 | */ | |
0655fa4d | 331 | void |
1d7ab0f4 | 332 | clientReplyContext::handleIMSReply(StoreIOBuffer result) |
0655fa4d | 333 | { |
1d7ab0f4 | 334 | if (deleting) |
335 | return; | |
62e76326 | 336 | |
bf8fe701 | 337 | debugs(88, 3, "handleIMSReply: " << http->storeEntry()->url() << ", " << (long unsigned) result.length << " bytes" ); |
62e76326 | 338 | |
1d7ab0f4 | 339 | if (http->storeEntry() == NULL) |
340 | return; | |
07947ad8 | 341 | |
1d7ab0f4 | 342 | if (result.flags.error && !EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) |
343 | return; | |
62e76326 | 344 | |
1d7ab0f4 | 345 | /* update size of the request */ |
346 | reqsize = result.length + reqofs; | |
62e76326 | 347 | |
1d7ab0f4 | 348 | const http_status status = http->storeEntry()->getReply()->sline.status; |
62e76326 | 349 | |
1d7ab0f4 | 350 | // request to origin was aborted |
351 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) { | |
bf8fe701 | 352 | debugs(88, 3, "handleIMSReply: request to origin aborted '" << http->storeEntry()->url() << "', sending old entry to client" ); |
1d7ab0f4 | 353 | http->logType = LOG_TCP_REFRESH_FAIL; |
354 | sendClientOldEntry(); | |
0655fa4d | 355 | } |
62e76326 | 356 | |
b297bcd0 | 357 | HttpReply *old_rep = (HttpReply *) old_entry->getReply(); |
62e76326 | 358 | |
b297bcd0 | 359 | // origin replied 304 |
62e76326 | 360 | |
b297bcd0 | 361 | if (status == HTTP_NOT_MODIFIED) { |
26ac0430 | 362 | http->logType = LOG_TCP_REFRESH_UNMODIFIED; |
045a76ab | 363 | |
26ac0430 AJ |
364 | // update headers on existing entry |
365 | HttpReply *old_rep = (HttpReply *) old_entry->getReply(); | |
366 | old_rep->updateOnNotModified(http->storeEntry()->getReply()); | |
367 | old_entry->timestampsSet(); | |
62e76326 | 368 | |
26ac0430 | 369 | // if client sent IMS |
62e76326 | 370 | |
26ac0430 AJ |
371 | if (http->request->flags.ims) { |
372 | // forward the 304 from origin | |
373 | debugs(88, 3, "handleIMSReply: origin replied 304, revalidating existing entry and forwarding 304 to client"); | |
374 | sendClientUpstreamResponse(); | |
375 | } else { | |
376 | // send existing entry, it's still valid | |
377 | debugs(88, 3, "handleIMSReply: origin replied 304, revalidating existing entry and sending " << | |
378 | old_rep->sline.status << " to client"); | |
379 | sendClientOldEntry(); | |
380 | } | |
b297bcd0 | 381 | } |
62e76326 | 382 | |
b297bcd0 HN |
383 | // origin replied with a non-error code |
384 | else if (status > HTTP_STATUS_NONE && status < HTTP_INTERNAL_SERVER_ERROR) { | |
26ac0430 AJ |
385 | // forward response from origin |
386 | http->logType = LOG_TCP_REFRESH_MODIFIED; | |
387 | debugs(88, 3, "handleIMSReply: origin replied " << status << ", replacing existing entry and forwarding to client"); | |
388 | sendClientUpstreamResponse(); | |
b297bcd0 | 389 | } |
62e76326 | 390 | |
b297bcd0 HN |
391 | // origin replied with an error |
392 | else { | |
26ac0430 AJ |
393 | // ignore and let client have old entry |
394 | http->logType = LOG_TCP_REFRESH_FAIL; | |
395 | debugs(88, 3, "handleIMSReply: origin replied with error " << | |
396 | status << ", sending old entry (" << old_rep->sline.status << ") to client"); | |
397 | sendClientOldEntry(); | |
1d7ab0f4 | 398 | } |
edce4d98 | 399 | } |
400 | ||
e6ccf245 | 401 | extern "C" CSR clientGetMoreData; |
402 | extern "C" CSD clientReplyDetach; | |
edce4d98 | 403 | |
7d5f62a4 AJ |
404 | /** |
405 | * clientReplyContext::cacheHit Should only be called until the HTTP reply headers | |
edce4d98 | 406 | * have been parsed. Normally this should be a single call, but |
407 | * it might take more than one. As soon as we have the headers, | |
0655fa4d | 408 | * we hand off to clientSendMoreData, processExpired, or |
409 | * processMiss. | |
edce4d98 | 410 | */ |
411 | void | |
0655fa4d | 412 | clientReplyContext::CacheHit(void *data, StoreIOBuffer result) |
edce4d98 | 413 | { |
e6ccf245 | 414 | clientReplyContext *context = (clientReplyContext *)data; |
7d5f62a4 | 415 | context->cacheHit(result); |
0655fa4d | 416 | } |
417 | ||
7d5f62a4 AJ |
418 | /** |
419 | * Process a possible cache HIT. | |
420 | */ | |
0655fa4d | 421 | void |
422 | clientReplyContext::cacheHit(StoreIOBuffer result) | |
423 | { | |
7d5f62a4 | 424 | /** Ignore if the HIT object is being deleted. */ |
045a76ab | 425 | if (deleting) |
426 | return; | |
427 | ||
86a2f789 | 428 | StoreEntry *e = http->storeEntry(); |
045a76ab | 429 | |
190154cf | 430 | HttpRequest *r = http->request; |
045a76ab | 431 | |
4a7a3d56 | 432 | debugs(88, 3, "clientCacheHit: " << http->uri << ", " << result.length << " bytes"); |
62e76326 | 433 | |
86a2f789 | 434 | if (http->storeEntry() == NULL) { |
bf8fe701 | 435 | debugs(88, 3, "clientCacheHit: request aborted"); |
62e76326 | 436 | return; |
c8be6d7b | 437 | } else if (result.flags.error) { |
62e76326 | 438 | /* swap in failure */ |
bf8fe701 | 439 | debugs(88, 3, "clientCacheHit: swapin failure for " << http->uri); |
62e76326 | 440 | http->logType = LOG_TCP_SWAPFAIL_MISS; |
86a2f789 | 441 | removeClientStoreReference(&sc, http); |
0655fa4d | 442 | processMiss(); |
62e76326 | 443 | return; |
edce4d98 | 444 | } |
62e76326 | 445 | |
d3b3ab85 | 446 | if (result.length == 0) { |
62e76326 | 447 | /* the store couldn't get enough data from the file for us to id the |
448 | * object | |
449 | */ | |
450 | /* treat as a miss */ | |
451 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 452 | processMiss(); |
62e76326 | 453 | return; |
d3b3ab85 | 454 | } |
62e76326 | 455 | |
edce4d98 | 456 | assert(!EBIT_TEST(e->flags, ENTRY_ABORTED)); |
457 | /* update size of the request */ | |
0655fa4d | 458 | reqsize = result.length + reqofs; |
62e76326 | 459 | |
edce4d98 | 460 | /* |
461 | * Got the headers, now grok them | |
462 | */ | |
29b8d8d6 | 463 | assert(http->logType == LOG_TCP_HIT); |
62e76326 | 464 | |
cdd4e1c1 | 465 | if (strcmp(e->mem_obj->url, urlCanonical(r)) != 0) { |
26ac0430 | 466 | debugs(33, 1, "clientProcessHit: URL mismatch, '" << e->mem_obj->url << "' != '" << urlCanonical(r) << "'"); |
cdd4e1c1 | 467 | processMiss(); |
468 | return; | |
469 | } | |
470 | ||
edce4d98 | 471 | switch (varyEvaluateMatch(e, r)) { |
62e76326 | 472 | |
edce4d98 | 473 | case VARY_NONE: |
62e76326 | 474 | /* No variance detected. Continue as normal */ |
475 | break; | |
476 | ||
edce4d98 | 477 | case VARY_MATCH: |
62e76326 | 478 | /* This is the correct entity for this request. Continue */ |
bf8fe701 | 479 | debugs(88, 2, "clientProcessHit: Vary MATCH!"); |
62e76326 | 480 | break; |
481 | ||
edce4d98 | 482 | case VARY_OTHER: |
62e76326 | 483 | /* This is not the correct entity for this request. We need |
484 | * to requery the cache. | |
485 | */ | |
86a2f789 | 486 | removeClientStoreReference(&sc, http); |
62e76326 | 487 | e = NULL; |
488 | /* Note: varyEvalyateMatch updates the request with vary information | |
489 | * so we only get here once. (it also takes care of cancelling loops) | |
490 | */ | |
26ac0430 | 491 | debugs(88, 2, "clientProcessHit: Vary detected!"); |
0655fa4d | 492 | clientGetMoreData(ourNode, http); |
62e76326 | 493 | return; |
494 | ||
edce4d98 | 495 | case VARY_CANCEL: |
62e76326 | 496 | /* varyEvaluateMatch found a object loop. Process as miss */ |
bf8fe701 | 497 | debugs(88, 1, "clientProcessHit: Vary object loop!"); |
0655fa4d | 498 | processMiss(); |
62e76326 | 499 | return; |
edce4d98 | 500 | } |
62e76326 | 501 | |
edce4d98 | 502 | if (r->method == METHOD_PURGE) { |
86a2f789 | 503 | removeClientStoreReference(&sc, http); |
62e76326 | 504 | e = NULL; |
0655fa4d | 505 | purgeRequest(); |
62e76326 | 506 | return; |
edce4d98 | 507 | } |
62e76326 | 508 | |
3900307b | 509 | if (e->checkNegativeHit() |
36e6655b | 510 | #if HTTP_VIOLATIONS |
511 | && !r->flags.nocache_hack | |
512 | #endif | |
513 | ) { | |
62e76326 | 514 | http->logType = LOG_TCP_NEGATIVE_HIT; |
0655fa4d | 515 | sendMoreData(result); |
f7cf9b8c | 516 | } else if (!Config.onoff.offline && refreshCheckHTTP(e, r) && !http->flags.internal) { |
bf8fe701 | 517 | debugs(88, 5, "clientCacheHit: in refreshCheck() block"); |
62e76326 | 518 | /* |
519 | * We hold a stale copy; it needs to be validated | |
520 | */ | |
521 | /* | |
522 | * The 'need_validation' flag is used to prevent forwarding | |
523 | * loops between siblings. If our copy of the object is stale, | |
524 | * then we should probably only use parents for the validation | |
525 | * request. Otherwise two siblings could generate a loop if | |
526 | * both have a stale version of the object. | |
527 | */ | |
528 | r->flags.need_validation = 1; | |
529 | ||
530 | if (e->lastmod < 0) { | |
531 | /* | |
532 | * Previous reply didn't have a Last-Modified header, | |
533 | * we cannot revalidate it. | |
534 | */ | |
535 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 536 | processMiss(); |
62e76326 | 537 | } else if (r->flags.nocache) { |
538 | /* | |
539 | * This did not match a refresh pattern that overrides no-cache | |
540 | * we should honour the client no-cache header. | |
541 | */ | |
542 | http->logType = LOG_TCP_CLIENT_REFRESH_MISS; | |
0655fa4d | 543 | processMiss(); |
62e76326 | 544 | } else if (r->protocol == PROTO_HTTP) { |
545 | /* | |
546 | * Object needs to be revalidated | |
547 | * XXX This could apply to FTP as well, if Last-Modified is known. | |
548 | */ | |
0655fa4d | 549 | processExpired(); |
62e76326 | 550 | } else { |
551 | /* | |
552 | * We don't know how to re-validate other protocols. Handle | |
553 | * them as if the object has expired. | |
554 | */ | |
555 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 556 | processMiss(); |
62e76326 | 557 | } |
edce4d98 | 558 | } else if (r->flags.ims) { |
62e76326 | 559 | /* |
560 | * Handle If-Modified-Since requests from the client | |
561 | */ | |
562 | ||
563 | if (e->getReply()->sline.status != HTTP_OK) { | |
bf8fe701 | 564 | debugs(88, 4, "clientCacheHit: Reply code " << |
565 | e->getReply()->sline.status << " != 200"); | |
62e76326 | 566 | http->logType = LOG_TCP_MISS; |
0655fa4d | 567 | processMiss(); |
568 | } else if (e->modifiedSince(http->request)) { | |
62e76326 | 569 | http->logType = LOG_TCP_IMS_HIT; |
0655fa4d | 570 | sendMoreData(result); |
62e76326 | 571 | } else { |
0655fa4d | 572 | time_t const timestamp = e->timestamp; |
06a5ae20 | 573 | HttpReply *temprep = e->getReply()->make304(); |
62e76326 | 574 | http->logType = LOG_TCP_IMS_HIT; |
86a2f789 | 575 | removeClientStoreReference(&sc, http); |
0655fa4d | 576 | createStoreEntry(http->request->method, |
577 | request_flags()); | |
86a2f789 | 578 | e = http->storeEntry(); |
62e76326 | 579 | /* |
580 | * Copy timestamp from the original entry so the 304 | |
581 | * reply has a meaningful Age: header. | |
582 | */ | |
583 | e->timestamp = timestamp; | |
db237875 | 584 | e->replaceHttpReply(temprep); |
62e76326 | 585 | e->complete(); |
586 | /* TODO: why put this in the store and then serialise it and then parse it again. | |
587 | * Simply mark the request complete in our context and | |
588 | * write the reply struct to the client side | |
589 | */ | |
0655fa4d | 590 | triggerInitialStoreRead(); |
62e76326 | 591 | } |
edce4d98 | 592 | } else { |
62e76326 | 593 | /* |
594 | * plain ol' cache hit | |
595 | */ | |
596 | ||
8d5f19a0 | 597 | #if DELAY_POOLS |
ffdf45f2 | 598 | if (e->store_status != STORE_OK) |
849b826a | 599 | http->logType = LOG_TCP_MISS; |
5bf4d170 | 600 | else |
601 | #endif | |
26ac0430 AJ |
602 | if (e->mem_status == IN_MEMORY) |
603 | http->logType = LOG_TCP_MEM_HIT; | |
604 | else if (Config.onoff.offline) | |
605 | http->logType = LOG_TCP_OFFLINE_HIT; | |
62e76326 | 606 | |
0655fa4d | 607 | sendMoreData(result); |
edce4d98 | 608 | } |
609 | } | |
610 | ||
7d5f62a4 | 611 | /** |
edce4d98 | 612 | * Prepare to fetch the object as it's a cache miss of some kind. |
613 | */ | |
614 | void | |
0655fa4d | 615 | clientReplyContext::processMiss() |
edce4d98 | 616 | { |
edce4d98 | 617 | char *url = http->uri; |
190154cf | 618 | HttpRequest *r = http->request; |
edce4d98 | 619 | ErrorState *err = NULL; |
60745f24 | 620 | debugs(88, 4, "clientProcessMiss: '" << RequestMethodStr(r->method) << " " << url << "'"); |
7d5f62a4 AJ |
621 | |
622 | /** | |
edce4d98 | 623 | * We might have a left-over StoreEntry from a failed cache hit |
624 | * or IMS request. | |
625 | */ | |
86a2f789 | 626 | if (http->storeEntry()) { |
627 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_SPECIAL)) { | |
bf8fe701 | 628 | debugs(88, 0, "clientProcessMiss: miss on a special object (" << url << ")."); |
629 | debugs(88, 0, "\tlog_type = " << log_tags[http->logType]); | |
3900307b | 630 | http->storeEntry()->dump(1); |
62e76326 | 631 | } |
632 | ||
86a2f789 | 633 | removeClientStoreReference(&sc, http); |
edce4d98 | 634 | } |
62e76326 | 635 | |
7d5f62a4 | 636 | /** Check if its a PURGE request to be actioned. */ |
edce4d98 | 637 | if (r->method == METHOD_PURGE) { |
0655fa4d | 638 | purgeRequest(); |
62e76326 | 639 | return; |
edce4d98 | 640 | } |
914b89a2 | 641 | |
7d5f62a4 | 642 | /** Check if its an 'OTHER' request. Purge all cached entries if so and continue. */ |
914b89a2 | 643 | if (r->method == METHOD_OTHER) { |
26ac0430 | 644 | purgeAllCached(); |
60745f24 | 645 | } |
62e76326 | 646 | |
7d5f62a4 | 647 | /** Check if 'only-if-cached' flag is set. Action if so. */ |
0655fa4d | 648 | if (http->onlyIfCached()) { |
649 | processOnlyIfCachedMiss(); | |
62e76326 | 650 | return; |
edce4d98 | 651 | } |
62e76326 | 652 | |
ce5a16c2 AR |
653 | /// Deny loops for accelerator and interceptor. TODO: deny in all modes? |
654 | if (r->flags.loopdetect && | |
655 | (http->flags.accel || http->flags.intercepted)) { | |
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 | ||
a5c8d64d AJ |
1202 | /** |
1203 | * Generate the reply headers sent to client. | |
1204 | * | |
1205 | * Filters out unwanted entries and hop-by-hop from original reply header | |
1206 | * then adds extra entries if we have more info than origin server | |
1207 | * then adds Squid specific entries | |
edce4d98 | 1208 | */ |
0655fa4d | 1209 | void |
1210 | clientReplyContext::buildReplyHeader() | |
edce4d98 | 1211 | { |
7dc5f514 | 1212 | HttpHeader *hdr = &reply->header; |
c8be6d7b | 1213 | int is_hit = logTypeIsATcpHit(http->logType); |
190154cf | 1214 | HttpRequest *request = http->request; |
edce4d98 | 1215 | #if DONT_FILTER_THESE |
1216 | /* but you might want to if you run Squid as an HTTP accelerator */ | |
a9925b40 | 1217 | /* hdr->delById(HDR_ACCEPT_RANGES); */ |
1218 | hdr->delById(HDR_ETAG); | |
edce4d98 | 1219 | #endif |
62e76326 | 1220 | |
edce4d98 | 1221 | if (is_hit) |
a9925b40 | 1222 | hdr->delById(HDR_SET_COOKIE); |
62e76326 | 1223 | |
26ac0430 | 1224 | // if there is not configured a peer proxy with login=PASS option enabled |
dcf3665b AJ |
1225 | // remove the Proxy-Authenticate header |
1226 | if ( !(request->peer_login && strcmp(request->peer_login,"PASS") ==0)) | |
26ac0430 | 1227 | reply->header.delById(HDR_PROXY_AUTHENTICATE); |
dcf3665b | 1228 | |
2cdeea82 | 1229 | reply->header.removeHopByHopEntries(); |
62e76326 | 1230 | |
1231 | // if (request->range) | |
7dc5f514 | 1232 | // clientBuildRangeHeader(http, reply); |
a5c8d64d | 1233 | |
edce4d98 | 1234 | /* |
1235 | * Add a estimated Age header on cache hits. | |
1236 | */ | |
1237 | if (is_hit) { | |
62e76326 | 1238 | /* |
1239 | * Remove any existing Age header sent by upstream caches | |
1240 | * (note that the existing header is passed along unmodified | |
1241 | * on cache misses) | |
1242 | */ | |
a9925b40 | 1243 | hdr->delById(HDR_AGE); |
62e76326 | 1244 | /* |
1245 | * This adds the calculated object age. Note that the details of the | |
1246 | * age calculation is performed by adjusting the timestamp in | |
3900307b | 1247 | * StoreEntry::timestampsSet(), not here. |
62e76326 | 1248 | * |
1249 | * BROWSER WORKAROUND: IE sometimes hangs when receiving a 0 Age | |
1250 | * header, so don't use it unless there is a age to report. Please | |
1251 | * note that Age is only used to make a conservative estimation of | |
1252 | * the objects age, so a Age: 0 header does not add any useful | |
1253 | * information to the reply in any case. | |
1254 | */ | |
a5c8d64d AJ |
1255 | #if DEAD_CODE |
1256 | // XXX: realy useless? or is there a bug now that this is detatched from the below if-sequence ? | |
1257 | // looks like this pre-if was supposed to be the browser workaround... | |
86a2f789 | 1258 | if (NULL == http->storeEntry()) |
62e76326 | 1259 | (void) 0; |
86a2f789 | 1260 | else if (http->storeEntry()->timestamp < 0) |
62e76326 | 1261 | (void) 0; |
a5c8d64d | 1262 | #endif |
bbe58ab5 | 1263 | |
1264 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_SPECIAL)) { | |
a9925b40 | 1265 | hdr->delById(HDR_DATE); |
1266 | hdr->insertTime(HDR_DATE, squid_curtime); | |
bbe58ab5 | 1267 | } else if (http->storeEntry()->timestamp < squid_curtime) { |
a9925b40 | 1268 | hdr->putInt(HDR_AGE, |
1269 | squid_curtime - http->storeEntry()->timestamp); | |
62e76326 | 1270 | /* Signal old objects. NB: rfc 2616 is not clear, |
1271 | * by implication, on whether we should do this to all | |
1272 | * responses, or only cache hits. | |
1273 | * 14.46 states it ONLY applys for heuristically caclulated | |
1274 | * freshness values, 13.2.4 doesn't specify the same limitation. | |
1275 | * We interpret RFC 2616 under the combination. | |
1276 | */ | |
1277 | /* TODO: if maxage or s-maxage is present, don't do this */ | |
1278 | ||
86a2f789 | 1279 | if (squid_curtime - http->storeEntry()->timestamp >= 86400) { |
62e76326 | 1280 | char tempbuf[512]; |
1281 | snprintf (tempbuf, sizeof(tempbuf), "%s %s %s", | |
1282 | "113", ThisCache, | |
1283 | "This cache hit is still fresh and more than 1 day old"); | |
a9925b40 | 1284 | hdr->putStr(HDR_WARNING, tempbuf); |
62e76326 | 1285 | } |
1286 | } | |
a5c8d64d | 1287 | } |
528b2c61 | 1288 | |
a5c8d64d AJ |
1289 | /* RFC 2616: Section 14.18 |
1290 | * | |
1291 | * Add a Date: header if missing. | |
1292 | * We have access to a clock therefore are required to amend any shortcoming in servers. | |
1293 | * | |
1294 | * NP: done after Age: to prevent ENTRY_SPECIAL double-handling this header. | |
1295 | */ | |
1296 | if ( !hdr->has(HDR_DATE) ) { | |
f0dedeb5 | 1297 | if (!http->storeEntry()) |
a5c8d64d | 1298 | hdr->insertTime(HDR_DATE, squid_curtime); |
f0dedeb5 AJ |
1299 | else if (http->storeEntry()->timestamp > 0) |
1300 | hdr->insertTime(HDR_DATE, http->storeEntry()->timestamp); | |
1301 | else { | |
1302 | debugs(88,1,"WARNING: An error inside Squid has caused an HTTP reply without Date:. Please report this"); | |
1303 | /* TODO: dump something useful about the problem */ | |
1304 | } | |
edce4d98 | 1305 | } |
62e76326 | 1306 | |
0bd9aa82 | 1307 | /* Filter unproxyable authentication types */ |
dcf3665b | 1308 | |
ddd31ed3 | 1309 | if (http->logType != LOG_TCP_DENIED && |
d67acb4e | 1310 | hdr->has(HDR_WWW_AUTHENTICATE)) { |
62e76326 | 1311 | HttpHeaderPos pos = HttpHeaderInitPos; |
1312 | HttpHeaderEntry *e; | |
1313 | ||
26ac0430 | 1314 | int connection_auth_blocked = 0; |
a9925b40 | 1315 | while ((e = hdr->getEntry(&pos))) { |
d67acb4e | 1316 | if (e->id == HDR_WWW_AUTHENTICATE) { |
5b4117d8 | 1317 | const char *value = e->value.rawBuf(); |
62e76326 | 1318 | |
1319 | if ((strncasecmp(value, "NTLM", 4) == 0 && | |
1320 | (value[4] == '\0' || value[4] == ' ')) | |
1321 | || | |
1322 | (strncasecmp(value, "Negotiate", 9) == 0 && | |
d67acb4e | 1323 | (value[9] == '\0' || value[9] == ' ')) |
26ac0430 AJ |
1324 | || |
1325 | (strncasecmp(value, "Kerberos", 8) == 0 && | |
1326 | (value[8] == '\0' || value[8] == ' '))) { | |
1327 | if (request->flags.connection_auth_disabled) { | |
1328 | hdr->delAt(pos, connection_auth_blocked); | |
d67acb4e AJ |
1329 | continue; |
1330 | } | |
26ac0430 AJ |
1331 | request->flags.must_keepalive = 1; |
1332 | if (!request->flags.accelerated && !request->flags.intercepted) { | |
d67acb4e | 1333 | httpHeaderPutStrf(hdr, HDR_PROXY_SUPPORT, "Session-Based-Authentication"); |
26ac0430 AJ |
1334 | /* |
1335 | We send "[Proxy-]Connection: Proxy-Support" header to mark | |
1336 | Proxy-Support as a hop-by-hop header for intermediaries that do not | |
1337 | understand the semantics of this header. The RFC should have included | |
1338 | this recommendation. | |
1339 | */ | |
d67acb4e AJ |
1340 | httpHeaderPutStrf(hdr, HDR_CONNECTION, "Proxy-support"); |
1341 | } | |
1342 | break; | |
26ac0430 | 1343 | } |
62e76326 | 1344 | } |
1345 | } | |
d67acb4e AJ |
1346 | |
1347 | if (connection_auth_blocked) | |
ba9fb01d | 1348 | hdr->refreshMask(); |
0bd9aa82 | 1349 | } |
62e76326 | 1350 | |
edce4d98 | 1351 | /* Handle authentication headers */ |
26ac0430 AJ |
1352 | if (http->logType == LOG_TCP_DENIED && |
1353 | ( reply->sline.status == HTTP_PROXY_AUTHENTICATION_REQUIRED || | |
1354 | reply->sline.status == HTTP_UNAUTHORIZED) | |
1355 | ) { | |
1356 | /* Add authentication header */ | |
1357 | /*! \todo alter errorstate to be accel on|off aware. The 0 on the next line | |
1358 | * depends on authenticate behaviour: all schemes to date send no extra | |
1359 | * data on 407/401 responses, and do not check the accel state on 401/407 | |
1360 | * responses | |
1361 | */ | |
1362 | authenticateFixHeader(reply, request->auth_user_request, request, 0, 1); | |
1363 | } else if (request->auth_user_request) | |
7dc5f514 | 1364 | authenticateFixHeader(reply, request->auth_user_request, request, |
62e76326 | 1365 | http->flags.accel, 0); |
1366 | ||
edce4d98 | 1367 | /* Append X-Cache */ |
1368 | httpHeaderPutStrf(hdr, HDR_X_CACHE, "%s from %s", | |
62e76326 | 1369 | is_hit ? "HIT" : "MISS", getMyHostname()); |
1370 | ||
edce4d98 | 1371 | #if USE_CACHE_DIGESTS |
1372 | /* Append X-Cache-Lookup: -- temporary hack, to be removed @?@ @?@ */ | |
1373 | httpHeaderPutStrf(hdr, HDR_X_CACHE_LOOKUP, "%s from %s:%d", | |
0655fa4d | 1374 | lookup_type ? lookup_type : "NONE", |
62e76326 | 1375 | getMyHostname(), getMyPort()); |
1376 | ||
edce4d98 | 1377 | #endif |
62e76326 | 1378 | |
f529bb20 | 1379 | /* Check whether we should send keep-alive */ |
58850d15 | 1380 | if (!Config.onoff.error_pconns && reply->sline.status >= 400 && !request->flags.must_keepalive) { |
bf8fe701 | 1381 | debugs(33, 3, "clientBuildReplyHeader: Error, don't keep-alive"); |
58850d15 | 1382 | request->flags.proxy_keepalive = 0; |
af6a12ee | 1383 | } else if (!Config.onoff.client_pconns && !request->flags.must_keepalive) { |
17b57873 | 1384 | debugs(33, 2, "clientBuildReplyHeader: Connection Keep-Alive not requested by admin or client"); |
f5e45ad8 | 1385 | request->flags.proxy_keepalive = 0; |
af6a12ee | 1386 | } else if (request->flags.proxy_keepalive && shutting_down) { |
f529bb20 | 1387 | debugs(88, 3, "clientBuildReplyHeader: Shutting down, don't keep-alive."); |
1388 | request->flags.proxy_keepalive = 0; | |
af6a12ee | 1389 | } else if (request->flags.connection_auth && !reply->keep_alive) { |
26ac0430 AJ |
1390 | debugs(33, 2, "clientBuildReplyHeader: Connection oriented auth but server side non-persistent"); |
1391 | request->flags.proxy_keepalive = 0; | |
af6a12ee | 1392 | } else if (reply->bodySize(request->method) < 0) { |
17b57873 AJ |
1393 | debugs(88, 3, "clientBuildReplyHeader: can't keep-alive, unknown body size" ); |
1394 | request->flags.proxy_keepalive = 0; | |
af6a12ee | 1395 | } else if (fdUsageHigh()&& !request->flags.must_keepalive) { |
17b57873 AJ |
1396 | debugs(88, 3, "clientBuildReplyHeader: Not many unused FDs, can't keep-alive"); |
1397 | request->flags.proxy_keepalive = 0; | |
1398 | } | |
d67acb4e | 1399 | |
f529bb20 | 1400 | |
4dea3fdd | 1401 | /* Append VIA */ |
92caea77 | 1402 | if (Config.onoff.via) { |
62e76326 | 1403 | LOCAL_ARRAY(char, bbuf, MAX_URL + 32); |
30abd221 | 1404 | String strVia; |
26ac0430 | 1405 | hdr->getList(HDR_VIA, &strVia); |
88331887 | 1406 | snprintf(bbuf, MAX_URL + 32, "%d.%d %s", |
7dc5f514 | 1407 | reply->sline.version.major, |
1408 | reply->sline.version.minor, | |
62e76326 | 1409 | ThisCache); |
1410 | strListAdd(&strVia, bbuf, ','); | |
a9925b40 | 1411 | hdr->delById(HDR_VIA); |
5b4117d8 | 1412 | hdr->putStr(HDR_VIA, strVia.termedBuf()); |
c8be6d7b | 1413 | } |
edce4d98 | 1414 | /* Signal keep-alive if needed */ |
a9925b40 | 1415 | hdr->putStr(http->flags.accel ? HDR_CONNECTION : HDR_PROXY_CONNECTION, |
1416 | request->flags.proxy_keepalive ? "keep-alive" : "close"); | |
62e76326 | 1417 | |
edce4d98 | 1418 | #if ADD_X_REQUEST_URI |
1419 | /* | |
1420 | * Knowing the URI of the request is useful when debugging persistent | |
1421 | * connections in a client; we cannot guarantee the order of http headers, | |
1422 | * but X-Request-URI is likely to be the very last header to ease use from a | |
1423 | * debugger [hdr->entries.count-1]. | |
1424 | */ | |
a9925b40 | 1425 | hdr->putStr(HDR_X_REQUEST_URI, |
1426 | http->memOjbect()->url ? http->memObject()->url : http->uri); | |
62e76326 | 1427 | |
edce4d98 | 1428 | #endif |
62e76326 | 1429 | |
8c01ada0 | 1430 | httpHdrMangleList(hdr, request, ROR_REPLY); |
edce4d98 | 1431 | } |
1432 | ||
1433 | ||
0655fa4d | 1434 | void |
b297bcd0 | 1435 | clientReplyContext::cloneReply() |
edce4d98 | 1436 | { |
7dc5f514 | 1437 | assert(reply == NULL); |
0655fa4d | 1438 | |
b297bcd0 | 1439 | HttpReply *rep = http->storeEntry()->getReply()->clone(); |
7dc5f514 | 1440 | |
1441 | reply = HTTPMSGLOCK(rep); | |
1442 | ||
0655fa4d | 1443 | /* enforce 1.0 reply version */ |
7dc5f514 | 1444 | reply->sline.version = HttpVersion(1,0); |
0655fa4d | 1445 | |
1446 | /* do header conversions */ | |
1447 | buildReplyHeader(); | |
edce4d98 | 1448 | } |
1449 | ||
e6ccf245 | 1450 | void |
1451 | clientReplyContext::identifyStoreObject() | |
edce4d98 | 1452 | { |
190154cf | 1453 | HttpRequest *r = http->request; |
62e76326 | 1454 | |
e6ccf245 | 1455 | if (r->flags.cachable || r->flags.internal) { |
62e76326 | 1456 | lookingforstore = 5; |
1457 | StoreEntry::getPublicByRequest (this, r); | |
559da936 | 1458 | } else { |
62e76326 | 1459 | identifyFoundObject (NullStoreEntry::getInstance()); |
559da936 | 1460 | } |
e6ccf245 | 1461 | } |
1462 | ||
7d5f62a4 AJ |
1463 | /** |
1464 | * Check state of the current StoreEntry object. | |
1465 | * to see if we can determine the final status of the request. | |
1466 | */ | |
e6ccf245 | 1467 | void |
1468 | clientReplyContext::identifyFoundObject(StoreEntry *newEntry) | |
1469 | { | |
1470 | StoreEntry *e = newEntry; | |
190154cf | 1471 | HttpRequest *r = http->request; |
62e76326 | 1472 | |
d85b8894 | 1473 | /** \li If the entry received isNull() then we ignore it. */ |
e6ccf245 | 1474 | if (e->isNull()) { |
86a2f789 | 1475 | http->storeEntry(NULL); |
e6ccf245 | 1476 | } else { |
86a2f789 | 1477 | http->storeEntry(e); |
e6ccf245 | 1478 | } |
62e76326 | 1479 | |
86a2f789 | 1480 | e = http->storeEntry(); |
a12a049a | 1481 | |
7d5f62a4 | 1482 | /* Release IP-cache entries on reload */ |
d85b8894 | 1483 | /** \li If the request has no-cache flag set or some no_cache HACK in operation we |
7d5f62a4 AJ |
1484 | * 'invalidate' the cached IP entries for this request ??? |
1485 | */ | |
a12a049a | 1486 | if (r->flags.nocache) { |
1487 | ||
1488 | #if USE_DNSSERVERS | |
62e76326 | 1489 | |
cc192b50 | 1490 | ipcacheInvalidate(r->GetHost()); |
62e76326 | 1491 | |
a12a049a | 1492 | #else |
1493 | ||
cc192b50 | 1494 | ipcacheInvalidateNegative(r->GetHost()); |
a12a049a | 1495 | |
1496 | #endif /* USE_DNSSERVERS */ | |
1497 | ||
1498 | } | |
1499 | ||
edce4d98 | 1500 | #if HTTP_VIOLATIONS |
62e76326 | 1501 | |
a12a049a | 1502 | else if (r->flags.nocache_hack) { |
1503 | ||
1504 | #if USE_DNSSERVERS | |
1505 | ||
cc192b50 | 1506 | ipcacheInvalidate(r->GetHost()); |
62e76326 | 1507 | |
a12a049a | 1508 | #else |
1509 | ||
cc192b50 | 1510 | ipcacheInvalidateNegative(r->GetHost()); |
a12a049a | 1511 | |
1512 | #endif /* USE_DNSSERVERS */ | |
1513 | ||
1514 | } | |
1515 | ||
1516 | #endif /* HTTP_VIOLATIONS */ | |
edce4d98 | 1517 | #if USE_CACHE_DIGESTS |
62e76326 | 1518 | |
86a2f789 | 1519 | lookup_type = http->storeEntry() ? "HIT" : "MISS"; |
62e76326 | 1520 | |
edce4d98 | 1521 | #endif |
62e76326 | 1522 | |
86a2f789 | 1523 | if (NULL == http->storeEntry()) { |
d85b8894 | 1524 | /** \li If no StoreEntry object is current assume this object isn't in the cache set MISS*/ |
7d5f62a4 | 1525 | debugs(85, 3, "clientProcessRequest2: StoreEntry is NULL - MISS"); |
62e76326 | 1526 | http->logType = LOG_TCP_MISS; |
1527 | doGetMoreData(); | |
1528 | return; | |
edce4d98 | 1529 | } |
62e76326 | 1530 | |
edce4d98 | 1531 | if (Config.onoff.offline) { |
d85b8894 | 1532 | /** \li If we are running in offline mode set to HIT */ |
bf8fe701 | 1533 | debugs(85, 3, "clientProcessRequest2: offline HIT"); |
62e76326 | 1534 | http->logType = LOG_TCP_HIT; |
1535 | doGetMoreData(); | |
1536 | return; | |
edce4d98 | 1537 | } |
62e76326 | 1538 | |
edce4d98 | 1539 | if (http->redirect.status) { |
d85b8894 | 1540 | /** \li If redirection status is True force this to be a MISS */ |
7d5f62a4 | 1541 | debugs(85, 3, "clientProcessRequest2: redirectStatus forced StoreEntry to NULL - MISS"); |
86a2f789 | 1542 | http->storeEntry(NULL); |
62e76326 | 1543 | http->logType = LOG_TCP_MISS; |
1544 | doGetMoreData(); | |
1545 | return; | |
edce4d98 | 1546 | } |
62e76326 | 1547 | |
3900307b | 1548 | if (!e->validToSend()) { |
bf8fe701 | 1549 | debugs(85, 3, "clientProcessRequest2: !storeEntryValidToSend MISS" ); |
86a2f789 | 1550 | http->storeEntry(NULL); |
62e76326 | 1551 | http->logType = LOG_TCP_MISS; |
1552 | doGetMoreData(); | |
1553 | return; | |
edce4d98 | 1554 | } |
62e76326 | 1555 | |
edce4d98 | 1556 | if (EBIT_TEST(e->flags, ENTRY_SPECIAL)) { |
d85b8894 | 1557 | /* \li Special entries are always hits, no matter what the client says */ |
bf8fe701 | 1558 | debugs(85, 3, "clientProcessRequest2: ENTRY_SPECIAL HIT"); |
62e76326 | 1559 | http->logType = LOG_TCP_HIT; |
1560 | doGetMoreData(); | |
1561 | return; | |
edce4d98 | 1562 | } |
62e76326 | 1563 | |
edce4d98 | 1564 | if (r->flags.nocache) { |
bf8fe701 | 1565 | debugs(85, 3, "clientProcessRequest2: no-cache REFRESH MISS"); |
86a2f789 | 1566 | http->storeEntry(NULL); |
62e76326 | 1567 | http->logType = LOG_TCP_CLIENT_REFRESH_MISS; |
1568 | doGetMoreData(); | |
1569 | return; | |
edce4d98 | 1570 | } |
62e76326 | 1571 | |
bf8fe701 | 1572 | debugs(85, 3, "clientProcessRequest2: default HIT"); |
e6ccf245 | 1573 | http->logType = LOG_TCP_HIT; |
1574 | doGetMoreData(); | |
edce4d98 | 1575 | } |
1576 | ||
d85b8894 AJ |
1577 | /** |
1578 | * Request more data from the store for the client Stream | |
edce4d98 | 1579 | * This is *the* entry point to this module. |
1580 | * | |
1581 | * Preconditions: | |
d85b8894 AJ |
1582 | * - This is the head of the list. |
1583 | * - There is at least one more node. | |
1584 | * - Data context is not null | |
edce4d98 | 1585 | */ |
1586 | void | |
59a1efb2 | 1587 | clientGetMoreData(clientStreamNode * aNode, ClientHttpRequest * http) |
edce4d98 | 1588 | { |
edce4d98 | 1589 | /* Test preconditions */ |
e6ccf245 | 1590 | assert(aNode != NULL); |
1591 | assert(cbdataReferenceValid(aNode)); | |
e6ccf245 | 1592 | assert(aNode->node.prev == NULL); |
1593 | assert(aNode->node.next != NULL); | |
0655fa4d | 1594 | clientReplyContext *context = dynamic_cast<clientReplyContext *>(aNode->data.getRaw()); |
1595 | assert (context); | |
edce4d98 | 1596 | assert(context->http == http); |
1597 | ||
559da936 | 1598 | |
0655fa4d | 1599 | clientStreamNode *next = ( clientStreamNode *)aNode->node.next->data; |
62e76326 | 1600 | |
edce4d98 | 1601 | if (!context->ourNode) |
62e76326 | 1602 | context->ourNode = aNode; |
1603 | ||
e6ccf245 | 1604 | /* no cbdatareference, this is only used once, and safely */ |
edce4d98 | 1605 | if (context->flags.storelogiccomplete) { |
62e76326 | 1606 | StoreIOBuffer tempBuffer; |
1607 | tempBuffer.offset = next->readBuffer.offset + context->headers_sz; | |
1608 | tempBuffer.length = next->readBuffer.length; | |
1609 | tempBuffer.data = next->readBuffer.data; | |
1610 | ||
86a2f789 | 1611 | storeClientCopy(context->sc, http->storeEntry(), |
0655fa4d | 1612 | tempBuffer, clientReplyContext::SendMoreData, context); |
62e76326 | 1613 | return; |
edce4d98 | 1614 | } |
62e76326 | 1615 | |
edce4d98 | 1616 | if (context->http->request->method == METHOD_PURGE) { |
62e76326 | 1617 | context->purgeRequest(); |
1618 | return; | |
edce4d98 | 1619 | } |
62e76326 | 1620 | |
fc90edc3 AJ |
1621 | /* TODO: handle OPTIONS request on max_forwards == 0 as well */ |
1622 | ||
edce4d98 | 1623 | if (context->http->request->method == METHOD_TRACE) { |
62e76326 | 1624 | if (context->http->request->max_forwards == 0) { |
0655fa4d | 1625 | context->traceReply(aNode); |
62e76326 | 1626 | return; |
1627 | } | |
1628 | ||
1629 | /* continue forwarding, not finished yet. */ | |
1630 | http->logType = LOG_TCP_MISS; | |
1631 | ||
1632 | context->doGetMoreData(); | |
edce4d98 | 1633 | } else |
62e76326 | 1634 | context->identifyStoreObject(); |
e6ccf245 | 1635 | } |
1636 | ||
1637 | void | |
1638 | clientReplyContext::doGetMoreData() | |
1639 | { | |
edce4d98 | 1640 | /* We still have to do store logic processing - vary, cache hit etc */ |
86a2f789 | 1641 | if (http->storeEntry() != NULL) { |
62e76326 | 1642 | /* someone found the object in the cache for us */ |
1643 | StoreIOBuffer tempBuffer; | |
34266cde | 1644 | |
3d0ac046 | 1645 | http->storeEntry()->lock(); |
62e76326 | 1646 | |
86a2f789 | 1647 | if (http->storeEntry()->mem_obj == NULL) { |
62e76326 | 1648 | /* |
1649 | * This if-block exists because we don't want to clobber | |
1650 | * a preexiting mem_obj->method value if the mem_obj | |
1651 | * already exists. For example, when a HEAD request | |
1652 | * is a cache hit for a GET response, we want to keep | |
1653 | * the method as GET. | |
1654 | */ | |
3900307b | 1655 | http->storeEntry()->createMemObject(http->uri, http->log_uri); |
7d5f62a4 | 1656 | http->storeEntry()->mem_obj->method = http->request->method; |
62e76326 | 1657 | } |
1658 | ||
86a2f789 | 1659 | sc = storeClientListAdd(http->storeEntry(), this); |
edce4d98 | 1660 | #if DELAY_POOLS |
62e76326 | 1661 | |
1662 | sc->setDelayId(DelayId::DelayClient(http)); | |
edce4d98 | 1663 | #endif |
62e76326 | 1664 | |
1665 | assert(http->logType == LOG_TCP_HIT); | |
1666 | reqofs = 0; | |
1667 | /* guarantee nothing has been sent yet! */ | |
1668 | assert(http->out.size == 0); | |
1669 | assert(http->out.offset == 0); | |
b86ab75b | 1670 | #if USE_ZPH_QOS |
575cb927 AJ |
1671 | if (Config.zph.tos_local_hit) { |
1672 | debugs(33, 2, "ZPH Local hit, TOS=" << Config.zph.tos_local_hit); | |
1673 | comm_set_tos(http->getConn()->fd, Config.zph.tos_local_hit); | |
b86ab75b AJ |
1674 | } |
1675 | #endif /* USE_ZPH_QOS */ | |
62e76326 | 1676 | tempBuffer.offset = reqofs; |
1677 | tempBuffer.length = getNextNode()->readBuffer.length; | |
1678 | tempBuffer.data = getNextNode()->readBuffer.data; | |
559da936 | 1679 | storeClientCopy(sc, http->storeEntry(), tempBuffer, CacheHit, this); |
edce4d98 | 1680 | } else { |
62e76326 | 1681 | /* MISS CASE, http->logType is already set! */ |
0655fa4d | 1682 | processMiss(); |
edce4d98 | 1683 | } |
1684 | } | |
1685 | ||
d85b8894 | 1686 | /** The next node has removed itself from the stream. */ |
edce4d98 | 1687 | void |
59a1efb2 | 1688 | clientReplyDetach(clientStreamNode * node, ClientHttpRequest * http) |
edce4d98 | 1689 | { |
d85b8894 | 1690 | /** detach from the stream */ |
edce4d98 | 1691 | clientStreamDetach(node, http); |
1692 | } | |
1693 | ||
d85b8894 AJ |
1694 | /** |
1695 | * Accepts chunk of a http message in buf, parses prefix, filters headers and | |
edce4d98 | 1696 | * such, writes processed message to the message recipient |
1697 | */ | |
1698 | void | |
0655fa4d | 1699 | clientReplyContext::SendMoreData(void *data, StoreIOBuffer result) |
edce4d98 | 1700 | { |
e6ccf245 | 1701 | clientReplyContext *context = static_cast<clientReplyContext *>(data); |
528b2c61 | 1702 | context->sendMoreData (result); |
1703 | } | |
1704 | ||
1705 | void | |
1706 | clientReplyContext::makeThisHead() | |
1707 | { | |
1708 | /* At least, I think thats what this does */ | |
1709 | dlinkDelete(&http->active, &ClientActiveRequests); | |
1710 | dlinkAdd(http, &http->active, &ClientActiveRequests); | |
1711 | } | |
1712 | ||
1713 | bool | |
1714 | clientReplyContext::errorInStream(StoreIOBuffer const &result, size_t const &sizeToProcess)const | |
1715 | { | |
1716 | return /* aborted request */ | |
86a2f789 | 1717 | (http->storeEntry() && EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) || |
62e76326 | 1718 | /* Upstream read error */ (result.flags.error) || |
1719 | /* Upstream EOF */ (sizeToProcess == 0); | |
528b2c61 | 1720 | } |
1721 | ||
1722 | void | |
1723 | clientReplyContext::sendStreamError(StoreIOBuffer const &result) | |
1724 | { | |
d85b8894 | 1725 | /** call clientWriteComplete so the client socket gets closed |
af6a12ee | 1726 | * |
d85b8894 | 1727 | * We call into the stream, because we don't know that there is a |
528b2c61 | 1728 | * client socket! |
1729 | */ | |
26ac0430 | 1730 | debugs(88, 5, "clientReplyContext::sendStreamError: A stream error has occured, marking as complete and sending no data."); |
528b2c61 | 1731 | StoreIOBuffer tempBuffer; |
1732 | flags.complete = 1; | |
1733 | tempBuffer.flags.error = result.flags.error; | |
1734 | clientStreamCallback((clientStreamNode*)http->client_stream.head->data, http, NULL, | |
62e76326 | 1735 | tempBuffer); |
528b2c61 | 1736 | } |
1737 | ||
1738 | void | |
1739 | clientReplyContext::pushStreamData(StoreIOBuffer const &result, char *source) | |
1740 | { | |
1741 | StoreIOBuffer tempBuffer; | |
62e76326 | 1742 | |
528b2c61 | 1743 | if (result.length == 0) { |
bf8fe701 | 1744 | debugs(88, 5, "clientReplyContext::pushStreamData: marking request as complete due to 0 length store result"); |
62e76326 | 1745 | flags.complete = 1; |
528b2c61 | 1746 | } |
62e76326 | 1747 | |
43ae1d95 | 1748 | assert(result.offset - headers_sz == next()->readBuffer.offset); |
528b2c61 | 1749 | tempBuffer.offset = result.offset - headers_sz; |
1750 | tempBuffer.length = result.length; | |
62e76326 | 1751 | |
43ae1d95 | 1752 | if (tempBuffer.length) |
1753 | tempBuffer.data = source; | |
62e76326 | 1754 | |
528b2c61 | 1755 | clientStreamCallback((clientStreamNode*)http->client_stream.head->data, http, NULL, |
62e76326 | 1756 | tempBuffer); |
528b2c61 | 1757 | } |
1758 | ||
1759 | clientStreamNode * | |
1760 | clientReplyContext::next() const | |
1761 | { | |
1762 | assert ( (clientStreamNode*)http->client_stream.head->next->data == getNextNode()); | |
1763 | return getNextNode(); | |
1764 | } | |
1765 | ||
b51aec66 | 1766 | void |
16611143 | 1767 | clientReplyContext::sendBodyTooLargeError() |
b51aec66 | 1768 | { |
ad61a2b4 | 1769 | IpAddress tmp_noaddr; |
26ac0430 | 1770 | tmp_noaddr.SetNoAddr(); // TODO: make a global const |
16611143 | 1771 | ErrorState *err = clientBuildError(ERR_TOO_BIG, HTTP_FORBIDDEN, NULL, |
26ac0430 AJ |
1772 | http->getConn() != NULL ? http->getConn()->peer : tmp_noaddr, |
1773 | http->request); | |
16611143 | 1774 | removeClientStoreReference(&(sc), http); |
1775 | HTTPMSGUNLOCK(reply); | |
1776 | startError(err); | |
26ac0430 | 1777 | |
b51aec66 | 1778 | } |
1779 | ||
4993f571 | 1780 | void |
1781 | clientReplyContext::processReplyAccess () | |
1782 | { | |
b50e327b | 1783 | /* NP: this should probably soft-fail to a zero-sized-reply error ?? */ |
7dc5f514 | 1784 | assert(reply); |
b50e327b AJ |
1785 | |
1786 | /** Don't block our own responses or HTTP status messages */ | |
16611143 | 1787 | if (http->logType == LOG_TCP_DENIED || |
26ac0430 AJ |
1788 | http->logType == LOG_TCP_DENIED_REPLY || |
1789 | alwaysAllowResponse(reply->sline.status)) { | |
acbf9428 | 1790 | headers_sz = reply->hdr_sz; |
26ac0430 AJ |
1791 | processReplyAccessResult(1); |
1792 | return; | |
230a8cc6 | 1793 | } |
26ac0430 | 1794 | |
b50e327b | 1795 | /** Check for reply to big error */ |
16611143 | 1796 | if (reply->expectedBodyTooLarge(*http->request)) { |
1797 | sendBodyTooLargeError(); | |
62e76326 | 1798 | return; |
1799 | } | |
1800 | ||
7dc5f514 | 1801 | headers_sz = reply->hdr_sz; |
230a8cc6 | 1802 | |
b50e327b | 1803 | /** check for absent access controls (permit by default) */ |
230a8cc6 | 1804 | if (!Config.accessList.reply) { |
26ac0430 AJ |
1805 | processReplyAccessResult(1); |
1806 | return; | |
230a8cc6 | 1807 | } |
1808 | ||
b50e327b | 1809 | /** Process http_reply_access lists */ |
127dce76 AR |
1810 | ACLFilledChecklist *replyChecklist = |
1811 | clientAclChecklistCreate(Config.accessList.reply, http); | |
7dc5f514 | 1812 | replyChecklist->reply = HTTPMSGLOCK(reply); |
0655fa4d | 1813 | replyChecklist->nonBlockingCheck(ProcessReplyAccessResult, this); |
4993f571 | 1814 | } |
1815 | ||
1816 | void | |
0655fa4d | 1817 | clientReplyContext::ProcessReplyAccessResult (int rv, void *voidMe) |
4993f571 | 1818 | { |
1819 | clientReplyContext *me = static_cast<clientReplyContext *>(voidMe); | |
0655fa4d | 1820 | me->processReplyAccessResult(rv); |
4993f571 | 1821 | } |
1822 | ||
1823 | void | |
0655fa4d | 1824 | clientReplyContext::processReplyAccessResult(bool accessAllowed) |
4993f571 | 1825 | { |
26ac0430 AJ |
1826 | debugs(88, 2, "The reply for " << RequestMethodStr(http->request->method) |
1827 | << " " << http->uri << " is " | |
1828 | << ( accessAllowed ? "ALLOWED" : "DENIED") | |
1829 | << ", because it matched '" | |
bf8fe701 | 1830 | << (AclMatchedName ? AclMatchedName : "NO ACL's") << "'" ); |
62e76326 | 1831 | |
230a8cc6 | 1832 | if (!accessAllowed) { |
62e76326 | 1833 | ErrorState *err; |
0185bd6f | 1834 | err_type page_id; |
9ce7856a | 1835 | page_id = aclGetDenyInfoPage(&Config.denyInfoList, AclMatchedName, 1); |
0185bd6f | 1836 | |
c466369c | 1837 | http->logType = LOG_TCP_DENIED_REPLY; |
1838 | ||
0185bd6f | 1839 | if (page_id == ERR_NONE) |
1840 | page_id = ERR_ACCESS_DENIED; | |
1841 | ||
ad61a2b4 | 1842 | IpAddress tmp_noaddr; |
26ac0430 | 1843 | tmp_noaddr.SetNoAddr(); |
cc192b50 | 1844 | err = clientBuildError(page_id, HTTP_FORBIDDEN, NULL, |
26ac0430 AJ |
1845 | http->getConn() != NULL ? http->getConn()->peer : tmp_noaddr, |
1846 | http->request); | |
0185bd6f | 1847 | |
86a2f789 | 1848 | removeClientStoreReference(&sc, http); |
0185bd6f | 1849 | |
7dc5f514 | 1850 | HTTPMSGUNLOCK(reply); |
0185bd6f | 1851 | |
3c2c1d31 | 1852 | startError(err); |
1853 | ||
0185bd6f | 1854 | |
62e76326 | 1855 | return; |
1856 | } | |
1857 | ||
0976f8db | 1858 | /* Ok, the reply is allowed, */ |
1859 | http->loggingEntry(http->storeEntry()); | |
1860 | ||
7dc5f514 | 1861 | ssize_t body_size = reqofs - reply->hdr_sz; |
b297bcd0 | 1862 | if (body_size < 0) { |
26ac0430 AJ |
1863 | reqofs = reply->hdr_sz; |
1864 | body_size = 0; | |
b297bcd0 | 1865 | } |
0976f8db | 1866 | |
bf8fe701 | 1867 | debugs(88, 3, "clientReplyContext::sendMoreData: Appending " << |
1868 | (int) body_size << " bytes after " << reply->hdr_sz << | |
1869 | " bytes of headers"); | |
0976f8db | 1870 | |
f41735ea | 1871 | #if USE_SQUID_ESI |
62e76326 | 1872 | |
7dc5f514 | 1873 | if (http->flags.accel && reply->sline.status != HTTP_FORBIDDEN && |
1874 | !alwaysAllowResponse(reply->sline.status) && | |
1875 | esiEnableProcessing(reply)) { | |
bf8fe701 | 1876 | debugs(88, 2, "Enabling ESI processing for " << http->uri); |
43ae1d95 | 1877 | clientStreamInsertHead(&http->client_stream, esiStreamRead, |
1878 | esiProcessStream, esiStreamDetach, esiStreamStatus, NULL); | |
1879 | } | |
1880 | ||
5ef38a13 | 1881 | #endif |
1882 | ||
62e76326 | 1883 | if (http->request->method == METHOD_HEAD) { |
1884 | /* do not forward body for HEAD replies */ | |
1885 | body_size = 0; | |
1886 | http->flags.done_copying = 1; | |
1887 | flags.complete = 1; | |
1888 | } | |
1889 | ||
1890 | assert (!flags.headersSent); | |
1891 | flags.headersSent = true; | |
1892 | ||
1893 | StoreIOBuffer tempBuffer; | |
1894 | char *buf = next()->readBuffer.data; | |
e85eb4e1 | 1895 | char *body_buf = buf + reply->hdr_sz; |
62e76326 | 1896 | |
49ea0125 | 1897 | //Server side may disable ranges under some circumstances. |
1898 | ||
1899 | if ((!http->request->range)) | |
1900 | next()->readBuffer.offset = 0; | |
1901 | ||
e85eb4e1 AJ |
1902 | body_buf -= next()->readBuffer.offset; |
1903 | ||
62e76326 | 1904 | if (next()->readBuffer.offset != 0) { |
1905 | if (next()->readBuffer.offset > body_size) { | |
2324cda2 | 1906 | /* Can't use any of the body we received. send nothing */ |
62e76326 | 1907 | tempBuffer.length = 0; |
1908 | tempBuffer.data = NULL; | |
1909 | } else { | |
1910 | tempBuffer.length = body_size - next()->readBuffer.offset; | |
1911 | tempBuffer.data = body_buf + next()->readBuffer.offset; | |
1912 | } | |
1913 | } else { | |
1914 | tempBuffer.length = body_size; | |
1915 | tempBuffer.data = body_buf; | |
1916 | } | |
1917 | ||
0655fa4d | 1918 | /* TODO??: move the data in the buffer back by the request header size */ |
62e76326 | 1919 | clientStreamCallback((clientStreamNode *)http->client_stream.head->data, |
7dc5f514 | 1920 | http, reply, tempBuffer); |
62e76326 | 1921 | |
1922 | return; | |
4993f571 | 1923 | } |
1924 | ||
528b2c61 | 1925 | void |
1926 | clientReplyContext::sendMoreData (StoreIOBuffer result) | |
1927 | { | |
50c09fc4 | 1928 | if (deleting) |
1929 | return; | |
1930 | ||
86a2f789 | 1931 | StoreEntry *entry = http->storeEntry(); |
50c09fc4 | 1932 | |
1cf238db | 1933 | ConnStateData * conn = http->getConn(); |
50c09fc4 | 1934 | |
94a396a3 | 1935 | int fd = conn != NULL ? conn->fd : -1; |
9af2f95b AR |
1936 | if (fd >= 0 && fd_table[fd].closing()) { // too late, our conn is closing |
1937 | // TODO: should we also quit when fd is negative? | |
1938 | debugs(33,3, HERE << "not sending more data to a closing FD " << fd); | |
1939 | return; | |
1940 | } | |
50c09fc4 | 1941 | |
528b2c61 | 1942 | char *buf = next()->readBuffer.data; |
50c09fc4 | 1943 | |
c8be6d7b | 1944 | char *body_buf = buf; |
edce4d98 | 1945 | |
da33c835 | 1946 | if (buf != result.data) { |
62e76326 | 1947 | /* we've got to copy some data */ |
1948 | assert(result.length <= next()->readBuffer.length); | |
1949 | xmemcpy(buf, result.data, result.length); | |
1950 | body_buf = buf; | |
edce4d98 | 1951 | } |
62e76326 | 1952 | |
452bb8e2 | 1953 | #if USE_ZPH_QOS |
26ac0430 | 1954 | if (reqofs==0 && !logTypeIsATcpHit(http->logType)) { |
9af2f95b | 1955 | assert(fd >= 0); // the beginning of this method implies fd may be -1 |
452bb8e2 | 1956 | int tos = 0; |
575cb927 AJ |
1957 | if (Config.zph.tos_sibling_hit && http->request->hier.code==SIBLING_HIT ) { |
1958 | tos = Config.zph.tos_sibling_hit; | |
1959 | debugs(33, 2, "ZPH: Sibling Peer hit with hier.code=" << http->request->hier.code << ", TOS=" << tos); | |
1960 | } else if (Config.zph.tos_parent_hit && http->request->hier.code==PARENT_HIT) { | |
1961 | tos = Config.zph.tos_parent_hit; | |
1962 | debugs(33, 2, "ZPH: Parent Peer hit with hier.code=" << http->request->hier.code << ", TOS=" << tos); | |
1963 | } else if (Config.zph.preserve_miss_tos && Config.zph.preserve_miss_tos_mask) { | |
1964 | tos = fd_table[fd].upstreamTOS & Config.zph.preserve_miss_tos_mask; | |
452bb8e2 AJ |
1965 | debugs(33, 2, "ZPH: Preserving TOS on miss, TOS="<<tos); |
1966 | } | |
1967 | comm_set_tos(fd,tos); | |
7172612f | 1968 | } |
26ac0430 | 1969 | #endif |
7172612f | 1970 | |
ab9c533b HN |
1971 | /* We've got the final data to start pushing... */ |
1972 | flags.storelogiccomplete = 1; | |
1973 | ||
4993f571 | 1974 | reqofs += result.length; |
1975 | ||
1976 | assert(reqofs <= HTTP_REQBUF_SZ || flags.headersSent); | |
62e76326 | 1977 | |
edce4d98 | 1978 | assert(http->request != NULL); |
62e76326 | 1979 | |
edce4d98 | 1980 | /* ESI TODO: remove this assert once everything is stable */ |
1981 | assert(http->client_stream.head->data | |
62e76326 | 1982 | && cbdataReferenceValid(http->client_stream.head->data)); |
528b2c61 | 1983 | |
1984 | makeThisHead(); | |
62e76326 | 1985 | |
bf8fe701 | 1986 | debugs(88, 5, "clientReplyContext::sendMoreData: " << http->uri << ", " << |
47f6e231 | 1987 | reqofs << " bytes (" << result.length << |
bf8fe701 | 1988 | " new bytes)"); |
47f6e231 | 1989 | debugs(88, 5, "clientReplyContext::sendMoreData:" |
26ac0430 AJ |
1990 | " FD " << fd << |
1991 | " '" << entry->url() << "'" << | |
1992 | " out.offset=" << http->out.offset); | |
528b2c61 | 1993 | |
edce4d98 | 1994 | /* update size of the request */ |
4993f571 | 1995 | reqsize = reqofs; |
62e76326 | 1996 | |
4993f571 | 1997 | if (errorInStream(result, reqofs)) { |
62e76326 | 1998 | sendStreamError(result); |
1999 | return; | |
edce4d98 | 2000 | } |
528b2c61 | 2001 | |
2002 | if (flags.headersSent) { | |
62e76326 | 2003 | pushStreamData (result, buf); |
2004 | return; | |
edce4d98 | 2005 | } |
62e76326 | 2006 | |
b297bcd0 | 2007 | cloneReply(); |
21b92762 | 2008 | |
b297bcd0 | 2009 | /* handle headers */ |
21b92762 | 2010 | |
b297bcd0 | 2011 | if (Config.onoff.log_mime_hdrs) { |
26ac0430 | 2012 | size_t k; |
43ae1d95 | 2013 | |
26ac0430 AJ |
2014 | if ((k = headersEnd(buf, reqofs))) { |
2015 | safe_free(http->al.headers.reply); | |
2016 | http->al.headers.reply = (char *)xcalloc(k + 1, 1); | |
2017 | xstrncpy(http->al.headers.reply, buf, k); | |
2018 | } | |
edce4d98 | 2019 | } |
b297bcd0 HN |
2020 | |
2021 | holdingBuffer = result; | |
2022 | processReplyAccess(); | |
2023 | return; | |
edce4d98 | 2024 | } |
2025 | ||
62e76326 | 2026 | |
edce4d98 | 2027 | |
2028 | /* Using this breaks the client layering just a little! | |
2029 | */ | |
0655fa4d | 2030 | void |
60745f24 | 2031 | clientReplyContext::createStoreEntry(const HttpRequestMethod& m, request_flags flags) |
edce4d98 | 2032 | { |
0655fa4d | 2033 | assert(http != NULL); |
edce4d98 | 2034 | /* |
2035 | * For erroneous requests, we might not have a h->request, | |
2036 | * so make a fake one. | |
2037 | */ | |
62e76326 | 2038 | |
0655fa4d | 2039 | if (http->request == NULL) |
6dd9f4bd | 2040 | http->request = HTTPMSGLOCK(new HttpRequest(m, PROTO_NONE, null_string)); |
62e76326 | 2041 | |
0655fa4d | 2042 | StoreEntry *e = storeCreateEntry(http->uri, http->log_uri, flags, m); |
62e76326 | 2043 | |
0655fa4d | 2044 | sc = storeClientListAdd(e, this); |
62e76326 | 2045 | |
edce4d98 | 2046 | #if DELAY_POOLS |
62e76326 | 2047 | |
0655fa4d | 2048 | sc->setDelayId(DelayId::DelayClient(http)); |
62e76326 | 2049 | |
edce4d98 | 2050 | #endif |
62e76326 | 2051 | |
0655fa4d | 2052 | reqofs = 0; |
62e76326 | 2053 | |
0655fa4d | 2054 | reqsize = 0; |
62e76326 | 2055 | |
edce4d98 | 2056 | /* I don't think this is actually needed! -- adrian */ |
0655fa4d | 2057 | /* http->reqbuf = http->norm_reqbuf; */ |
2058 | // assert(http->reqbuf == http->norm_reqbuf); | |
edce4d98 | 2059 | /* The next line is illegal because we don't know if the client stream |
26ac0430 | 2060 | * buffers have been set up |
edce4d98 | 2061 | */ |
0655fa4d | 2062 | // storeClientCopy(http->sc, e, 0, HTTP_REQBUF_SZ, http->reqbuf, |
2063 | // SendMoreData, this); | |
edce4d98 | 2064 | /* So, we mark the store logic as complete */ |
0655fa4d | 2065 | this->flags.storelogiccomplete = 1; |
62e76326 | 2066 | |
edce4d98 | 2067 | /* and get the caller to request a read, from whereever they are */ |
62e76326 | 2068 | /* NOTE: after ANY data flows down the pipe, even one step, |
26ac0430 | 2069 | * this function CAN NOT be used to manage errors |
edce4d98 | 2070 | */ |
86a2f789 | 2071 | http->storeEntry(e); |
edce4d98 | 2072 | } |
2073 | ||
2074 | ErrorState * | |
2075 | clientBuildError(err_type page_id, http_status status, char const *url, | |
ad61a2b4 | 2076 | IpAddress &src_addr, HttpRequest * request) |
edce4d98 | 2077 | { |
2cc81f1f | 2078 | ErrorState *err = errorCon(page_id, status, request); |
cc192b50 | 2079 | err->src_addr = src_addr; |
62e76326 | 2080 | |
edce4d98 | 2081 | if (url) |
62e76326 | 2082 | err->url = xstrdup(url); |
2083 | ||
edce4d98 | 2084 | return err; |
2085 | } |