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edce4d98 | 1 | |
2 | /* | |
1d7ab0f4 | 3 | * $Id: client_side_reply.cc,v 1.109 2006/06/07 22:39:34 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" |
c8be6d7b | 38 | #include "StoreClient.h" |
e6ccf245 | 39 | #include "Store.h" |
528b2c61 | 40 | #include "HttpReply.h" |
41 | #include "HttpRequest.h" | |
b6b6f466 | 42 | #include "forward.h" |
e6ccf245 | 43 | |
c8be6d7b | 44 | #include "clientStream.h" |
f5691f9c | 45 | #include "AuthUserRequest.h" |
43ae1d95 | 46 | #if ESI |
47 | #include "ESI.h" | |
48 | #endif | |
5ef38a13 | 49 | #if ICAP_CLIENT_RESPMOD_POSTCACHE |
50 | #include "ICAPClient.h" | |
51 | #endif | |
528b2c61 | 52 | #include "MemObject.h" |
4fb35c3c | 53 | #include "ACLChecklist.h" |
b0dd28ba | 54 | #include "ACL.h" |
b67e2c8c | 55 | #if DELAY_POOLS |
56 | #include "DelayPools.h" | |
57 | #endif | |
a46d2c0e | 58 | #include "client_side.h" |
985c86bc | 59 | #include "SquidTime.h" |
e6ccf245 | 60 | |
0655fa4d | 61 | CBDATA_CLASS_INIT(clientReplyContext); |
edce4d98 | 62 | |
edce4d98 | 63 | /* Local functions */ |
e6ccf245 | 64 | extern "C" CSS clientReplyStatus; |
edce4d98 | 65 | extern ErrorState *clientBuildError(err_type, http_status, char const *, |
62e76326 | 66 | |
ddfcbc22 | 67 | struct IN_ADDR *, HttpRequest *); |
edce4d98 | 68 | |
edce4d98 | 69 | /* privates */ |
edce4d98 | 70 | |
0655fa4d | 71 | clientReplyContext::~clientReplyContext() |
edce4d98 | 72 | { |
50c09fc4 | 73 | deleting = true; |
74 | /* This may trigger a callback back into SendMoreData as the cbdata | |
75 | * is still valid | |
76 | */ | |
86a2f789 | 77 | removeClientStoreReference(&sc, http); |
edce4d98 | 78 | /* old_entry might still be set if we didn't yet get the reply |
0655fa4d | 79 | * code in HandleIMSReply() */ |
80 | removeStoreReference(&old_sc, &old_entry); | |
81 | safe_free(tempBuffer.data); | |
82 | cbdataReferenceDone(http); | |
2b7d324b | 83 | HTTPMSGUNLOCK(reply); |
edce4d98 | 84 | } |
85 | ||
59a1efb2 | 86 | clientReplyContext::clientReplyContext(ClientHttpRequest *clientContext) : http (cbdataReference(clientContext)), old_entry (NULL), old_sc(NULL), deleting(false) |
0655fa4d | 87 | {} |
edce4d98 | 88 | |
89 | /* create an error in the store awaiting the client side to read it. */ | |
0655fa4d | 90 | /* This may be better placed in the clientStream logic, but it has not been |
91 | * relocated there yet | |
92 | */ | |
edce4d98 | 93 | void |
0655fa4d | 94 | clientReplyContext::setReplyToError( |
95 | err_type err, http_status status, method_t method, char const *uri, | |
62e76326 | 96 | |
ddfcbc22 | 97 | struct IN_ADDR *addr, HttpRequest * failedrequest, char *unparsedrequest, |
0655fa4d | 98 | auth_user_request_t * 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 | |
114 | if (auth_user_request) | |
115 | { | |
116 | errstate->auth_user_request = auth_user_request; | |
f5691f9c | 117 | |
118 | errstate->auth_user_request->lock() | |
119 | ||
120 | ; | |
edce4d98 | 121 | } |
62e76326 | 122 | |
edce4d98 | 123 | assert(errstate->callback_data == NULL); |
86a2f789 | 124 | errorAppendEntry(http->storeEntry(), errstate); |
edce4d98 | 125 | /* Now the caller reads to get this */ |
126 | } | |
127 | ||
128 | void | |
0655fa4d | 129 | clientReplyContext::removeStoreReference(store_client ** scp, |
130 | StoreEntry ** ep) | |
edce4d98 | 131 | { |
132 | StoreEntry *e; | |
133 | store_client *sc = *scp; | |
62e76326 | 134 | |
edce4d98 | 135 | if ((e = *ep) != NULL) { |
62e76326 | 136 | *ep = NULL; |
0655fa4d | 137 | storeUnregister(sc, e, this); |
62e76326 | 138 | *scp = NULL; |
97b5e68f | 139 | e->unlock(); |
edce4d98 | 140 | } |
141 | } | |
142 | ||
86a2f789 | 143 | void |
144 | clientReplyContext::removeClientStoreReference(store_client **scp, ClientHttpRequest *http) | |
145 | { | |
146 | StoreEntry *reference = http->storeEntry(); | |
147 | removeStoreReference(scp, &reference); | |
148 | http->storeEntry(reference); | |
149 | } | |
150 | ||
e6ccf245 | 151 | void * |
a695955b | 152 | clientReplyContext::operator new (size_t byteCount) |
e6ccf245 | 153 | { |
154 | /* derived classes with different sizes must implement their own new */ | |
155 | assert (byteCount == sizeof (clientReplyContext)); | |
0655fa4d | 156 | CBDATA_INIT_TYPE(clientReplyContext); |
e6ccf245 | 157 | return cbdataAlloc(clientReplyContext); |
158 | } | |
159 | ||
160 | void | |
161 | clientReplyContext::operator delete (void *address) | |
162 | { | |
a50bfe93 | 163 | clientReplyContext * tmp = (clientReplyContext *)address; |
164 | cbdataFree (tmp); | |
e6ccf245 | 165 | } |
166 | ||
edce4d98 | 167 | void |
0655fa4d | 168 | clientReplyContext::saveState() |
edce4d98 | 169 | { |
e6ccf245 | 170 | assert(old_sc == NULL); |
61fb2d9a | 171 | debug(88, 3)("clientReplyContext::saveState: saving store context\n"); |
86a2f789 | 172 | old_entry = http->storeEntry(); |
e6ccf245 | 173 | old_sc = sc; |
174 | old_reqsize = reqsize; | |
175 | tempBuffer.offset = reqofs; | |
edce4d98 | 176 | /* Prevent accessing the now saved entries */ |
86a2f789 | 177 | http->storeEntry(NULL); |
e6ccf245 | 178 | sc = NULL; |
179 | reqsize = 0; | |
180 | reqofs = 0; | |
edce4d98 | 181 | } |
182 | ||
183 | void | |
0655fa4d | 184 | clientReplyContext::restoreState() |
edce4d98 | 185 | { |
e6ccf245 | 186 | assert(old_sc != NULL); |
61fb2d9a | 187 | debug(88, 3)("clientReplyContext::restoreState: Restoring store context\n"); |
86a2f789 | 188 | removeClientStoreReference(&sc, http); |
189 | http->storeEntry(old_entry); | |
e6ccf245 | 190 | sc = old_sc; |
191 | reqsize = old_reqsize; | |
192 | reqofs = tempBuffer.offset; | |
edce4d98 | 193 | /* Prevent accessed the old saved entries */ |
0655fa4d | 194 | old_entry = NULL; |
e6ccf245 | 195 | old_sc = NULL; |
196 | old_reqsize = 0; | |
197 | tempBuffer.offset = 0; | |
c8be6d7b | 198 | } |
199 | ||
200 | void | |
0655fa4d | 201 | clientReplyContext::startError(ErrorState * err) |
c8be6d7b | 202 | { |
0655fa4d | 203 | createStoreEntry(http->request->method, request_flags()); |
204 | triggerInitialStoreRead(); | |
86a2f789 | 205 | errorAppendEntry(http->storeEntry(), err); |
edce4d98 | 206 | } |
207 | ||
e6ccf245 | 208 | clientStreamNode * |
528b2c61 | 209 | clientReplyContext::getNextNode() const |
e6ccf245 | 210 | { |
62e76326 | 211 | return (clientStreamNode *)ourNode->node.next->data; |
e6ccf245 | 212 | } |
213 | ||
62e76326 | 214 | /* This function is wrong - the client parameters don't include the |
528b2c61 | 215 | * header offset |
216 | */ | |
c8be6d7b | 217 | void |
0655fa4d | 218 | clientReplyContext::triggerInitialStoreRead() |
c8be6d7b | 219 | { |
0655fa4d | 220 | /* when confident, 0 becomes reqofs, and then this factors into |
528b2c61 | 221 | * startSendProcess |
222 | */ | |
0655fa4d | 223 | assert(reqofs == 0); |
dd272b8e | 224 | StoreIOBuffer tempBuffer (next()->readBuffer.length, 0, next()->readBuffer.data); |
86a2f789 | 225 | storeClientCopy(sc, http->storeEntry(), tempBuffer, SendMoreData, this); |
c8be6d7b | 226 | } |
edce4d98 | 227 | |
228 | /* there is an expired entry in the store. | |
229 | * setup a temporary buffer area and perform an IMS to the origin | |
230 | */ | |
0655fa4d | 231 | void |
232 | clientReplyContext::processExpired() | |
edce4d98 | 233 | { |
edce4d98 | 234 | char *url = http->uri; |
235 | StoreEntry *entry = NULL; | |
0655fa4d | 236 | debug(88, 3)("clientReplyContext::processExpired: '%s'", http->uri); |
86a2f789 | 237 | assert(http->storeEntry()->lastmod >= 0); |
edce4d98 | 238 | /* |
239 | * check if we are allowed to contact other servers | |
240 | * @?@: Instead of a 504 (Gateway Timeout) reply, we may want to return | |
241 | * a stale entry *if* it matches client requirements | |
242 | */ | |
62e76326 | 243 | |
0655fa4d | 244 | if (http->onlyIfCached()) { |
245 | processOnlyIfCachedMiss(); | |
62e76326 | 246 | return; |
edce4d98 | 247 | } |
62e76326 | 248 | |
edce4d98 | 249 | http->request->flags.refresh = 1; |
250 | #if STORE_CLIENT_LIST_DEBUG | |
c8be6d7b | 251 | /* Prevent a race with the store client memory free routines |
edce4d98 | 252 | */ |
0655fa4d | 253 | assert(storeClientIsThisAClient(sc, this)); |
edce4d98 | 254 | #endif |
255 | /* Prepare to make a new temporary request */ | |
0655fa4d | 256 | saveState(); |
edce4d98 | 257 | entry = storeCreateEntry(url, |
62e76326 | 258 | http->log_uri, http->request->flags, http->request->method); |
34266cde | 259 | /* NOTE, don't call StoreEntry->lock(), storeCreateEntry() does it */ |
0655fa4d | 260 | sc = storeClientListAdd(entry, this); |
edce4d98 | 261 | #if DELAY_POOLS |
262 | /* delay_id is already set on original store client */ | |
0655fa4d | 263 | sc->setDelayId(DelayId::DelayClient(http)); |
edce4d98 | 264 | #endif |
62e76326 | 265 | |
0655fa4d | 266 | http->request->lastmod = old_entry->lastmod; |
267 | debug(88, 5)("clientReplyContext::processExpired : lastmod %ld", | |
62e76326 | 268 | (long int) entry->lastmod); |
86a2f789 | 269 | http->storeEntry(entry); |
c8be6d7b | 270 | assert(http->out.offset == 0); |
b2d22df6 | 271 | |
272 | /* | |
273 | * A refcounted pointer so that FwdState stays around as long as | |
274 | * this clientReplyContext does | |
275 | */ | |
be0c6690 | 276 | FwdState::fwdStart(http->getConn().getRaw() != NULL ? http->getConn()->fd : -1, |
277 | http->storeEntry(), | |
278 | http->request); | |
edce4d98 | 279 | /* Register with storage manager to receive updates when data comes in. */ |
62e76326 | 280 | |
edce4d98 | 281 | if (EBIT_TEST(entry->flags, ENTRY_ABORTED)) |
0655fa4d | 282 | debug(88, 0) ("clientReplyContext::processExpired: Found ENTRY_ABORTED object"); |
62e76326 | 283 | |
c8be6d7b | 284 | { |
62e76326 | 285 | /* start counting the length from 0 */ |
0655fa4d | 286 | StoreIOBuffer tempBuffer(HTTP_REQBUF_SZ, 0, tempbuf); |
287 | storeClientCopy(sc, entry, tempBuffer, HandleIMSReply, this); | |
edce4d98 | 288 | } |
289 | } | |
290 | ||
edce4d98 | 291 | |
528b2c61 | 292 | void |
293 | clientReplyContext::sendClientUpstreamResponse() | |
294 | { | |
295 | StoreIOBuffer tempresult; | |
0655fa4d | 296 | removeStoreReference(&old_sc, &old_entry); |
528b2c61 | 297 | /* here the data to send is the data we just recieved */ |
298 | tempBuffer.offset = 0; | |
299 | old_reqsize = 0; | |
0655fa4d | 300 | /* sendMoreData tracks the offset as well. |
528b2c61 | 301 | * Force it back to zero */ |
302 | reqofs = 0; | |
86a2f789 | 303 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 304 | /* TODO: provide sendMoreData with the ready parsed reply */ |
528b2c61 | 305 | tempresult.length = reqsize; |
306 | tempresult.data = tempbuf; | |
0655fa4d | 307 | sendMoreData(tempresult); |
528b2c61 | 308 | } |
309 | ||
edce4d98 | 310 | void |
0655fa4d | 311 | clientReplyContext::HandleIMSReply(void *data, StoreIOBuffer result) |
edce4d98 | 312 | { |
e6ccf245 | 313 | clientReplyContext *context = (clientReplyContext *)data; |
0655fa4d | 314 | context->handleIMSReply(result); |
315 | } | |
62e76326 | 316 | |
0655fa4d | 317 | void |
318 | clientReplyContext::sendClientOldEntry() | |
319 | { | |
320 | /* Get the old request back */ | |
321 | restoreState(); | |
322 | /* here the data to send is in the next nodes buffers already */ | |
86a2f789 | 323 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 324 | /* sendMoreData tracks the offset as well. |
325 | * Force it back to zero */ | |
326 | reqofs = 0; | |
327 | StoreIOBuffer tempresult (reqsize, reqofs, next()->readBuffer.data); | |
328 | sendMoreData(tempresult); | |
329 | } | |
62e76326 | 330 | |
1d7ab0f4 | 331 | /* This is the workhorse of the HandleIMSReply callback. |
332 | * | |
333 | * It is called when we've got data back from the origin following our | |
334 | * IMS request to revalidate a stale entry. | |
335 | */ | |
0655fa4d | 336 | void |
1d7ab0f4 | 337 | clientReplyContext::handleIMSReply(StoreIOBuffer result) |
0655fa4d | 338 | { |
1d7ab0f4 | 339 | if (deleting) |
340 | return; | |
62e76326 | 341 | |
1d7ab0f4 | 342 | debug(88, 3) ("handleIMSReply: %s, %lu bytes\n", |
343 | storeUrl(http->storeEntry()), | |
344 | (long unsigned) result.length); | |
62e76326 | 345 | |
1d7ab0f4 | 346 | if (http->storeEntry() == NULL) |
347 | return; | |
07947ad8 | 348 | |
1d7ab0f4 | 349 | if (result.flags.error && !EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) |
350 | return; | |
62e76326 | 351 | |
1d7ab0f4 | 352 | /* update size of the request */ |
353 | reqsize = result.length + reqofs; | |
62e76326 | 354 | |
1d7ab0f4 | 355 | const http_status status = http->storeEntry()->getReply()->sline.status; |
62e76326 | 356 | |
1d7ab0f4 | 357 | // request to origin was aborted |
358 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) { | |
359 | debug(88, 3) ("handleIMSReply: request to origin aborted '%s', sending old entry to client\n", storeUrl(http->storeEntry())); | |
360 | http->logType = LOG_TCP_REFRESH_FAIL; | |
361 | sendClientOldEntry(); | |
0655fa4d | 362 | } |
62e76326 | 363 | |
1d7ab0f4 | 364 | // we have a partial reply from the origin |
365 | else if (STORE_PENDING == http->storeEntry()->store_status && 0 == status) { | |
366 | // header is too large, send old entry | |
62e76326 | 367 | |
1d7ab0f4 | 368 | if (reqsize >= HTTP_REQBUF_SZ) { |
369 | debug(88, 3) ("handleIMSReply: response from origin is too large '%s', sending old entry to client\n", storeUrl(http->storeEntry())); | |
370 | http->logType = LOG_TCP_REFRESH_FAIL; | |
371 | sendClientOldEntry(); | |
0655fa4d | 372 | } |
62e76326 | 373 | |
1d7ab0f4 | 374 | // everything looks fine, we're just waiting for more data |
375 | else { | |
376 | debug(88, 3) ("handleIMSReply: incomplete headers for '%s', waiting for more data\n", storeUrl(http->storeEntry())); | |
377 | reqofs = reqsize; | |
378 | waitForMoreData(); | |
379 | } | |
0655fa4d | 380 | } |
62e76326 | 381 | |
1d7ab0f4 | 382 | // we have a reply from the origin |
383 | else { | |
384 | HttpReply *old_rep = (HttpReply *) old_entry->getReply(); | |
045a76ab | 385 | |
1d7ab0f4 | 386 | // origin replied 304 |
62e76326 | 387 | |
1d7ab0f4 | 388 | if (status == HTTP_NOT_MODIFIED) { |
389 | http->logType = LOG_TCP_REFRESH_UNMODIFIED; | |
62e76326 | 390 | |
1d7ab0f4 | 391 | // update headers on existing entry |
392 | HttpReply *old_rep = (HttpReply *) old_entry->getReply(); | |
393 | old_rep->updateOnNotModified(http->storeEntry()->getReply()); | |
394 | storeTimestampsSet(old_entry); | |
62e76326 | 395 | |
1d7ab0f4 | 396 | // if client sent IMS |
397 | ||
398 | if (http->request->flags.ims) { | |
399 | // forward the 304 from origin | |
400 | debug(88,3) ("handleIMSReply: origin replied 304, revalidating existing entry and forwarding 304 to client\n"); | |
401 | sendClientUpstreamResponse(); | |
402 | } else { | |
403 | // send existing entry, it's still valid | |
404 | debug(88,3) ("handleIMSReply: origin replied 304, revalidating existing entry and sending %d to client\n", old_rep->sline.status); | |
405 | sendClientOldEntry(); | |
406 | } | |
407 | } | |
62e76326 | 408 | |
1d7ab0f4 | 409 | // origin replied with a non-error code |
410 | else if (status > HTTP_STATUS_NONE && status < HTTP_INTERNAL_SERVER_ERROR) { | |
411 | // forward response from origin | |
412 | http->logType = LOG_TCP_REFRESH_MODIFIED; | |
413 | debug(88,3) ("handleIMSReply: origin replied %d, replacing existing entry and forwarding to client\n", status); | |
414 | sendClientUpstreamResponse(); | |
415 | } | |
62e76326 | 416 | |
1d7ab0f4 | 417 | // origin replied with an error |
418 | else { | |
419 | // ignore and let client have old entry | |
420 | http->logType = LOG_TCP_REFRESH_FAIL; | |
421 | debug(88,3) ("handleIMSReply: origin replied with error %d, sending old entry (%d) to client\n", status, old_rep->sline.status); | |
422 | sendClientOldEntry(); | |
423 | } | |
424 | } | |
edce4d98 | 425 | } |
426 | ||
e6ccf245 | 427 | extern "C" CSR clientGetMoreData; |
428 | extern "C" CSD clientReplyDetach; | |
edce4d98 | 429 | |
430 | /* | |
431 | * clientCacheHit should only be called until the HTTP reply headers | |
432 | * have been parsed. Normally this should be a single call, but | |
433 | * it might take more than one. As soon as we have the headers, | |
0655fa4d | 434 | * we hand off to clientSendMoreData, processExpired, or |
435 | * processMiss. | |
edce4d98 | 436 | */ |
437 | void | |
0655fa4d | 438 | clientReplyContext::CacheHit(void *data, StoreIOBuffer result) |
edce4d98 | 439 | { |
e6ccf245 | 440 | clientReplyContext *context = (clientReplyContext *)data; |
0655fa4d | 441 | context->cacheHit (result); |
442 | } | |
443 | ||
444 | void | |
445 | clientReplyContext::cacheHit(StoreIOBuffer result) | |
446 | { | |
045a76ab | 447 | if (deleting) |
448 | return; | |
449 | ||
86a2f789 | 450 | StoreEntry *e = http->storeEntry(); |
045a76ab | 451 | |
190154cf | 452 | HttpRequest *r = http->request; |
045a76ab | 453 | |
c4b7a5a9 | 454 | debug(88, 3) ("clientCacheHit: %s, %ud bytes\n", http->uri, (unsigned int)result.length); |
62e76326 | 455 | |
86a2f789 | 456 | if (http->storeEntry() == NULL) { |
62e76326 | 457 | debug(88, 3) ("clientCacheHit: request aborted\n"); |
458 | return; | |
c8be6d7b | 459 | } else if (result.flags.error) { |
62e76326 | 460 | /* swap in failure */ |
461 | debug(88, 3) ("clientCacheHit: swapin failure for %s\n", http->uri); | |
462 | http->logType = LOG_TCP_SWAPFAIL_MISS; | |
86a2f789 | 463 | removeClientStoreReference(&sc, http); |
0655fa4d | 464 | processMiss(); |
62e76326 | 465 | return; |
edce4d98 | 466 | } |
62e76326 | 467 | |
d3b3ab85 | 468 | if (result.length == 0) { |
62e76326 | 469 | /* the store couldn't get enough data from the file for us to id the |
470 | * object | |
471 | */ | |
472 | /* treat as a miss */ | |
473 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 474 | processMiss(); |
62e76326 | 475 | return; |
d3b3ab85 | 476 | } |
62e76326 | 477 | |
edce4d98 | 478 | assert(!EBIT_TEST(e->flags, ENTRY_ABORTED)); |
479 | /* update size of the request */ | |
0655fa4d | 480 | reqsize = result.length + reqofs; |
62e76326 | 481 | |
528b2c61 | 482 | if (e->getReply()->sline.status == 0) { |
62e76326 | 483 | /* |
484 | * we don't have full reply headers yet; either wait for more or | |
485 | * punt to clientProcessMiss. | |
486 | */ | |
487 | ||
488 | if (e->mem_status == IN_MEMORY || e->store_status == STORE_OK) { | |
0655fa4d | 489 | processMiss(); |
490 | } else if (result.length + reqofs >= HTTP_REQBUF_SZ | |
62e76326 | 491 | && http->out.offset == 0) { |
0655fa4d | 492 | processMiss(); |
62e76326 | 493 | } else { |
62e76326 | 494 | debug(88, 3) ("clientCacheHit: waiting for HTTP reply headers\n"); |
0655fa4d | 495 | reqofs += result.length; |
496 | assert(reqofs <= HTTP_REQBUF_SZ); | |
62e76326 | 497 | /* get the next users' buffer */ |
0655fa4d | 498 | StoreIOBuffer tempBuffer; |
499 | tempBuffer.offset = http->out.offset + reqofs; | |
500 | tempBuffer.length = next()->readBuffer.length - reqofs; | |
501 | tempBuffer.data = next()->readBuffer.data + reqofs; | |
502 | storeClientCopy(sc, e, | |
503 | tempBuffer, CacheHit, this); | |
62e76326 | 504 | } |
505 | ||
506 | return; | |
edce4d98 | 507 | } |
62e76326 | 508 | |
edce4d98 | 509 | /* |
510 | * Got the headers, now grok them | |
511 | */ | |
29b8d8d6 | 512 | assert(http->logType == LOG_TCP_HIT); |
62e76326 | 513 | |
edce4d98 | 514 | switch (varyEvaluateMatch(e, r)) { |
62e76326 | 515 | |
edce4d98 | 516 | case VARY_NONE: |
62e76326 | 517 | /* No variance detected. Continue as normal */ |
518 | break; | |
519 | ||
edce4d98 | 520 | case VARY_MATCH: |
62e76326 | 521 | /* This is the correct entity for this request. Continue */ |
522 | debug(88, 2) ("clientProcessHit: Vary MATCH!\n"); | |
523 | break; | |
524 | ||
edce4d98 | 525 | case VARY_OTHER: |
62e76326 | 526 | /* This is not the correct entity for this request. We need |
527 | * to requery the cache. | |
528 | */ | |
86a2f789 | 529 | removeClientStoreReference(&sc, http); |
62e76326 | 530 | e = NULL; |
531 | /* Note: varyEvalyateMatch updates the request with vary information | |
532 | * so we only get here once. (it also takes care of cancelling loops) | |
533 | */ | |
534 | debug(88, 2) ("clientProcessHit: Vary detected!\n"); | |
0655fa4d | 535 | clientGetMoreData(ourNode, http); |
62e76326 | 536 | return; |
537 | ||
edce4d98 | 538 | case VARY_CANCEL: |
62e76326 | 539 | /* varyEvaluateMatch found a object loop. Process as miss */ |
540 | debug(88, 1) ("clientProcessHit: Vary object loop!\n"); | |
0655fa4d | 541 | processMiss(); |
62e76326 | 542 | return; |
edce4d98 | 543 | } |
62e76326 | 544 | |
edce4d98 | 545 | if (r->method == METHOD_PURGE) { |
86a2f789 | 546 | removeClientStoreReference(&sc, http); |
62e76326 | 547 | e = NULL; |
0655fa4d | 548 | purgeRequest(); |
62e76326 | 549 | return; |
edce4d98 | 550 | } |
62e76326 | 551 | |
36e6655b | 552 | if (storeCheckNegativeHit(e) |
553 | #if HTTP_VIOLATIONS | |
554 | && !r->flags.nocache_hack | |
555 | #endif | |
556 | ) { | |
62e76326 | 557 | http->logType = LOG_TCP_NEGATIVE_HIT; |
0655fa4d | 558 | sendMoreData(result); |
f7cf9b8c | 559 | } else if (!Config.onoff.offline && refreshCheckHTTP(e, r) && !http->flags.internal) { |
62e76326 | 560 | debug(88, 5) ("clientCacheHit: in refreshCheck() block\n"); |
561 | /* | |
562 | * We hold a stale copy; it needs to be validated | |
563 | */ | |
564 | /* | |
565 | * The 'need_validation' flag is used to prevent forwarding | |
566 | * loops between siblings. If our copy of the object is stale, | |
567 | * then we should probably only use parents for the validation | |
568 | * request. Otherwise two siblings could generate a loop if | |
569 | * both have a stale version of the object. | |
570 | */ | |
571 | r->flags.need_validation = 1; | |
572 | ||
573 | if (e->lastmod < 0) { | |
574 | /* | |
575 | * Previous reply didn't have a Last-Modified header, | |
576 | * we cannot revalidate it. | |
577 | */ | |
578 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 579 | processMiss(); |
62e76326 | 580 | } else if (r->flags.nocache) { |
581 | /* | |
582 | * This did not match a refresh pattern that overrides no-cache | |
583 | * we should honour the client no-cache header. | |
584 | */ | |
585 | http->logType = LOG_TCP_CLIENT_REFRESH_MISS; | |
0655fa4d | 586 | processMiss(); |
62e76326 | 587 | } else if (r->protocol == PROTO_HTTP) { |
588 | /* | |
589 | * Object needs to be revalidated | |
590 | * XXX This could apply to FTP as well, if Last-Modified is known. | |
591 | */ | |
0655fa4d | 592 | processExpired(); |
62e76326 | 593 | } else { |
594 | /* | |
595 | * We don't know how to re-validate other protocols. Handle | |
596 | * them as if the object has expired. | |
597 | */ | |
598 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 599 | processMiss(); |
62e76326 | 600 | } |
edce4d98 | 601 | } else if (r->flags.ims) { |
62e76326 | 602 | /* |
603 | * Handle If-Modified-Since requests from the client | |
604 | */ | |
605 | ||
606 | if (e->getReply()->sline.status != HTTP_OK) { | |
607 | debug(88, 4) ("clientCacheHit: Reply code %d != 200\n", | |
608 | e->getReply()->sline.status); | |
609 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 610 | processMiss(); |
611 | } else if (e->modifiedSince(http->request)) { | |
62e76326 | 612 | http->logType = LOG_TCP_IMS_HIT; |
0655fa4d | 613 | sendMoreData(result); |
62e76326 | 614 | } else { |
0655fa4d | 615 | time_t const timestamp = e->timestamp; |
06a5ae20 | 616 | HttpReply *temprep = e->getReply()->make304(); |
62e76326 | 617 | http->logType = LOG_TCP_IMS_HIT; |
86a2f789 | 618 | removeClientStoreReference(&sc, http); |
0655fa4d | 619 | createStoreEntry(http->request->method, |
620 | request_flags()); | |
86a2f789 | 621 | e = http->storeEntry(); |
62e76326 | 622 | /* |
623 | * Copy timestamp from the original entry so the 304 | |
624 | * reply has a meaningful Age: header. | |
625 | */ | |
626 | e->timestamp = timestamp; | |
db237875 | 627 | e->replaceHttpReply(temprep); |
62e76326 | 628 | e->complete(); |
629 | /* TODO: why put this in the store and then serialise it and then parse it again. | |
630 | * Simply mark the request complete in our context and | |
631 | * write the reply struct to the client side | |
632 | */ | |
0655fa4d | 633 | triggerInitialStoreRead(); |
62e76326 | 634 | } |
edce4d98 | 635 | } else { |
62e76326 | 636 | /* |
637 | * plain ol' cache hit | |
638 | */ | |
639 | ||
ffdf45f2 | 640 | if (e->store_status != STORE_OK) |
849b826a | 641 | http->logType = LOG_TCP_MISS; |
ffdf45f2 | 642 | else if (e->mem_status == IN_MEMORY) |
62e76326 | 643 | http->logType = LOG_TCP_MEM_HIT; |
644 | else if (Config.onoff.offline) | |
645 | http->logType = LOG_TCP_OFFLINE_HIT; | |
646 | ||
0655fa4d | 647 | sendMoreData(result); |
edce4d98 | 648 | } |
649 | } | |
650 | ||
651 | /* | |
652 | * Prepare to fetch the object as it's a cache miss of some kind. | |
653 | */ | |
654 | void | |
0655fa4d | 655 | clientReplyContext::processMiss() |
edce4d98 | 656 | { |
edce4d98 | 657 | char *url = http->uri; |
190154cf | 658 | HttpRequest *r = http->request; |
edce4d98 | 659 | ErrorState *err = NULL; |
660 | debug(88, 4) ("clientProcessMiss: '%s %s'\n", | |
62e76326 | 661 | RequestMethodStr[r->method], url); |
edce4d98 | 662 | /* |
663 | * We might have a left-over StoreEntry from a failed cache hit | |
664 | * or IMS request. | |
665 | */ | |
62e76326 | 666 | |
86a2f789 | 667 | if (http->storeEntry()) { |
668 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_SPECIAL)) { | |
62e76326 | 669 | debug(88, 0) ("clientProcessMiss: miss on a special object (%s).\n", |
670 | url); | |
671 | debug(88, 0) ("\tlog_type = %s\n", log_tags[http->logType]); | |
86a2f789 | 672 | storeEntryDump(http->storeEntry(), 1); |
62e76326 | 673 | } |
674 | ||
86a2f789 | 675 | removeClientStoreReference(&sc, http); |
edce4d98 | 676 | } |
62e76326 | 677 | |
edce4d98 | 678 | if (r->method == METHOD_PURGE) { |
0655fa4d | 679 | purgeRequest(); |
62e76326 | 680 | return; |
edce4d98 | 681 | } |
62e76326 | 682 | |
0655fa4d | 683 | if (http->onlyIfCached()) { |
684 | processOnlyIfCachedMiss(); | |
62e76326 | 685 | return; |
edce4d98 | 686 | } |
62e76326 | 687 | |
edce4d98 | 688 | /* |
689 | * Deny loops when running in accelerator/transproxy mode. | |
690 | */ | |
691 | if (http->flags.accel && r->flags.loopdetect) { | |
62e76326 | 692 | http->al.http.code = HTTP_FORBIDDEN; |
693 | err = | |
694 | clientBuildError(ERR_ACCESS_DENIED, HTTP_FORBIDDEN, NULL, | |
98242069 | 695 | &http->getConn()->peer.sin_addr, http->request); |
0655fa4d | 696 | createStoreEntry(r->method, request_flags()); |
86a2f789 | 697 | errorAppendEntry(http->storeEntry(), err); |
0655fa4d | 698 | triggerInitialStoreRead(); |
62e76326 | 699 | return; |
edce4d98 | 700 | } else { |
62e76326 | 701 | assert(http->out.offset == 0); |
0655fa4d | 702 | createStoreEntry(r->method, r->flags); |
703 | triggerInitialStoreRead(); | |
62e76326 | 704 | |
705 | if (http->redirect.status) { | |
06a5ae20 | 706 | HttpReply *rep = new HttpReply; |
edce4d98 | 707 | #if LOG_TCP_REDIRECTS |
62e76326 | 708 | |
709 | http->logType = LOG_TCP_REDIRECT; | |
edce4d98 | 710 | #endif |
62e76326 | 711 | |
86a2f789 | 712 | storeReleaseRequest(http->storeEntry()); |
06a5ae20 | 713 | rep->redirect(http->redirect.status, http->redirect.location); |
db237875 | 714 | http->storeEntry()->replaceHttpReply(rep); |
86a2f789 | 715 | http->storeEntry()->complete(); |
62e76326 | 716 | return; |
717 | } | |
718 | ||
719 | if (http->flags.internal) | |
720 | r->protocol = PROTO_INTERNAL; | |
721 | ||
be0c6690 | 722 | FwdState::fwdStart(http->getConn().getRaw() != NULL ? http->getConn()->fd : -1, |
723 | http->storeEntry(), | |
724 | r); | |
edce4d98 | 725 | } |
726 | } | |
727 | ||
728 | /* | |
729 | * client issued a request with an only-if-cached cache-control directive; | |
730 | * we did not find a cached object that can be returned without | |
731 | * contacting other servers; | |
732 | * respond with a 504 (Gateway Timeout) as suggested in [RFC 2068] | |
733 | */ | |
0655fa4d | 734 | void |
735 | clientReplyContext::processOnlyIfCachedMiss() | |
edce4d98 | 736 | { |
edce4d98 | 737 | ErrorState *err = NULL; |
edce4d98 | 738 | debug(88, 4) ("clientProcessOnlyIfCachedMiss: '%s %s'\n", |
0655fa4d | 739 | RequestMethodStr[http->request->method], http->uri); |
edce4d98 | 740 | http->al.http.code = HTTP_GATEWAY_TIMEOUT; |
741 | err = clientBuildError(ERR_ONLY_IF_CACHED_MISS, HTTP_GATEWAY_TIMEOUT, NULL, | |
98242069 | 742 | &http->getConn()->peer.sin_addr, http->request); |
86a2f789 | 743 | removeClientStoreReference(&sc, http); |
0655fa4d | 744 | startError(err); |
edce4d98 | 745 | } |
746 | ||
747 | void | |
e6ccf245 | 748 | clientReplyContext::purgeRequestFindObjectToPurge() |
749 | { | |
750 | /* Try to find a base entry */ | |
751 | http->flags.purging = 1; | |
752 | lookingforstore = 1; | |
3b13a8fd | 753 | StoreEntry::getPublicByRequestMethod(this, http->request, METHOD_GET); |
e6ccf245 | 754 | } |
755 | ||
756 | void | |
3b13a8fd | 757 | clientReplyContext::created(StoreEntry *newEntry) |
e6ccf245 | 758 | { |
759 | if (lookingforstore == 1) | |
62e76326 | 760 | purgeFoundGet(newEntry); |
e6ccf245 | 761 | else if (lookingforstore == 2) |
62e76326 | 762 | purgeFoundHead(newEntry); |
e6ccf245 | 763 | else if (lookingforstore == 3) |
62e76326 | 764 | purgeDoPurgeGet(newEntry); |
e6ccf245 | 765 | else if (lookingforstore == 4) |
62e76326 | 766 | purgeDoPurgeHead(newEntry); |
e6ccf245 | 767 | else if (lookingforstore == 5) |
62e76326 | 768 | identifyFoundObject(newEntry); |
e6ccf245 | 769 | } |
770 | ||
771 | void | |
3b13a8fd | 772 | clientReplyContext::purgeFoundGet(StoreEntry *newEntry) |
e6ccf245 | 773 | { |
774 | if (newEntry->isNull()) { | |
62e76326 | 775 | lookingforstore = 2; |
776 | StoreEntry::getPublicByRequestMethod(this, http->request, METHOD_HEAD); | |
e6ccf245 | 777 | } else |
62e76326 | 778 | purgeFoundObject (newEntry); |
e6ccf245 | 779 | } |
780 | ||
781 | void | |
3b13a8fd | 782 | clientReplyContext::purgeFoundHead(StoreEntry *newEntry) |
e6ccf245 | 783 | { |
784 | if (newEntry->isNull()) | |
62e76326 | 785 | purgeDoMissPurge(); |
e6ccf245 | 786 | else |
62e76326 | 787 | purgeFoundObject (newEntry); |
e6ccf245 | 788 | } |
62e76326 | 789 | |
e6ccf245 | 790 | void |
3b13a8fd | 791 | clientReplyContext::purgeFoundObject(StoreEntry *entry) |
e6ccf245 | 792 | { |
793 | assert (entry && !entry->isNull()); | |
e4b9a2f0 | 794 | |
795 | if (EBIT_TEST(entry->flags, ENTRY_SPECIAL)) { | |
796 | http->logType = LOG_TCP_DENIED; | |
797 | ErrorState *err = | |
798 | clientBuildError(ERR_ACCESS_DENIED, HTTP_FORBIDDEN, NULL, | |
799 | &http->getConn()->peer.sin_addr, http->request); | |
800 | startError(err); | |
801 | return; | |
802 | } | |
803 | ||
62e76326 | 804 | StoreIOBuffer tempBuffer; |
805 | /* Swap in the metadata */ | |
86a2f789 | 806 | http->storeEntry(entry); |
34266cde | 807 | |
808 | http->storeEntry()->lock() | |
809 | ||
810 | ; | |
86a2f789 | 811 | storeCreateMemObject(http->storeEntry(), http->uri, http->log_uri); |
34266cde | 812 | |
86a2f789 | 813 | http->storeEntry()->mem_obj->method = http->request->method; |
34266cde | 814 | |
86a2f789 | 815 | sc = storeClientListAdd(http->storeEntry(), this); |
34266cde | 816 | |
62e76326 | 817 | http->logType = LOG_TCP_HIT; |
34266cde | 818 | |
62e76326 | 819 | reqofs = 0; |
34266cde | 820 | |
62e76326 | 821 | tempBuffer.offset = http->out.offset; |
34266cde | 822 | |
0655fa4d | 823 | tempBuffer.length = next()->readBuffer.length; |
34266cde | 824 | |
0655fa4d | 825 | tempBuffer.data = next()->readBuffer.data; |
34266cde | 826 | |
86a2f789 | 827 | storeClientCopy(sc, http->storeEntry(), |
0655fa4d | 828 | tempBuffer, CacheHit, this); |
e6ccf245 | 829 | } |
830 | ||
831 | void | |
832 | clientReplyContext::purgeRequest() | |
edce4d98 | 833 | { |
edce4d98 | 834 | debug(88, 3) ("Config2.onoff.enable_purge = %d\n", |
62e76326 | 835 | Config2.onoff.enable_purge); |
836 | ||
edce4d98 | 837 | if (!Config2.onoff.enable_purge) { |
62e76326 | 838 | http->logType = LOG_TCP_DENIED; |
839 | ErrorState *err = | |
840 | clientBuildError(ERR_ACCESS_DENIED, HTTP_FORBIDDEN, NULL, | |
98242069 | 841 | &http->getConn()->peer.sin_addr, http->request); |
0655fa4d | 842 | startError(err); |
62e76326 | 843 | return; |
edce4d98 | 844 | } |
62e76326 | 845 | |
edce4d98 | 846 | /* Release both IP cache */ |
847 | ipcacheInvalidate(http->request->host); | |
848 | ||
e6ccf245 | 849 | if (!http->flags.purging) |
62e76326 | 850 | purgeRequestFindObjectToPurge(); |
e6ccf245 | 851 | else |
62e76326 | 852 | purgeDoMissPurge(); |
e6ccf245 | 853 | } |
854 | ||
855 | void | |
856 | clientReplyContext::purgeDoMissPurge() | |
857 | { | |
29b8d8d6 | 858 | http->logType = LOG_TCP_MISS; |
e6ccf245 | 859 | lookingforstore = 3; |
3b13a8fd | 860 | StoreEntry::getPublicByRequestMethod(this,http->request, METHOD_GET); |
e6ccf245 | 861 | } |
862 | ||
863 | void | |
3b13a8fd | 864 | clientReplyContext::purgeDoPurgeGet(StoreEntry *newEntry) |
e6ccf245 | 865 | { |
866 | assert (newEntry); | |
867 | /* Move to new() when that is created */ | |
868 | purgeStatus = HTTP_NOT_FOUND; | |
869 | ||
870 | if (!newEntry->isNull()) { | |
62e76326 | 871 | /* Release the cached URI */ |
872 | debug(88, 4) ("clientPurgeRequest: GET '%s'\n", storeUrl(newEntry)); | |
5f33b71d | 873 | newEntry->release(); |
62e76326 | 874 | purgeStatus = HTTP_OK; |
edce4d98 | 875 | } |
62e76326 | 876 | |
e6ccf245 | 877 | lookingforstore = 4; |
3b13a8fd | 878 | StoreEntry::getPublicByRequestMethod(this, http->request, METHOD_HEAD); |
e6ccf245 | 879 | } |
880 | ||
881 | void | |
3b13a8fd | 882 | clientReplyContext::purgeDoPurgeHead(StoreEntry *newEntry) |
e6ccf245 | 883 | { |
4fc0ac76 | 884 | if (newEntry && !newEntry->isNull()) { |
62e76326 | 885 | debug(88, 4) ("clientPurgeRequest: HEAD '%s'\n", storeUrl(newEntry)); |
5f33b71d | 886 | newEntry->release(); |
62e76326 | 887 | purgeStatus = HTTP_OK; |
edce4d98 | 888 | } |
62e76326 | 889 | |
edce4d98 | 890 | /* And for Vary, release the base URI if none of the headers was included in the request */ |
62e76326 | 891 | |
edce4d98 | 892 | if (http->request->vary_headers |
62e76326 | 893 | && !strstr(http->request->vary_headers, "=")) { |
894 | StoreEntry *entry = storeGetPublic(urlCanonical(http->request), METHOD_GET); | |
895 | ||
896 | if (entry) { | |
897 | debug(88, 4) ("clientPurgeRequest: Vary GET '%s'\n", | |
898 | storeUrl(entry)); | |
5f33b71d | 899 | entry->release(); |
62e76326 | 900 | purgeStatus = HTTP_OK; |
901 | } | |
902 | ||
903 | entry = storeGetPublic(urlCanonical(http->request), METHOD_HEAD); | |
904 | ||
905 | if (entry) { | |
906 | debug(88, 4) ("clientPurgeRequest: Vary HEAD '%s'\n", | |
907 | storeUrl(entry)); | |
5f33b71d | 908 | entry->release(); |
62e76326 | 909 | purgeStatus = HTTP_OK; |
910 | } | |
edce4d98 | 911 | } |
62e76326 | 912 | |
edce4d98 | 913 | /* |
914 | * Make a new entry to hold the reply to be written | |
915 | * to the client. | |
916 | */ | |
528b2c61 | 917 | /* FIXME: This doesn't need to go through the store. Simply |
918 | * push down the client chain | |
919 | */ | |
0655fa4d | 920 | createStoreEntry(http->request->method, request_flags()); |
62e76326 | 921 | |
0655fa4d | 922 | triggerInitialStoreRead(); |
62e76326 | 923 | |
7dc5f514 | 924 | HttpReply *rep = new HttpReply; |
62e76326 | 925 | |
450e0c10 | 926 | HttpVersion version(1,0); |
62e76326 | 927 | |
7dc5f514 | 928 | rep->setHeaders(version, purgeStatus, NULL, NULL, 0, 0, -1); |
62e76326 | 929 | |
7dc5f514 | 930 | http->storeEntry()->replaceHttpReply(rep); |
62e76326 | 931 | |
86a2f789 | 932 | http->storeEntry()->complete(); |
edce4d98 | 933 | } |
934 | ||
935 | void | |
0655fa4d | 936 | clientReplyContext::traceReply(clientStreamNode * node) |
edce4d98 | 937 | { |
e6ccf245 | 938 | clientStreamNode *next = (clientStreamNode *)node->node.next->data; |
528b2c61 | 939 | StoreIOBuffer tempBuffer; |
0655fa4d | 940 | assert(http->request->max_forwards == 0); |
941 | createStoreEntry(http->request->method, request_flags()); | |
942 | tempBuffer.offset = next->readBuffer.offset + headers_sz; | |
c8be6d7b | 943 | tempBuffer.length = next->readBuffer.length; |
944 | tempBuffer.data = next->readBuffer.data; | |
86a2f789 | 945 | storeClientCopy(sc, http->storeEntry(), |
0655fa4d | 946 | tempBuffer, SendMoreData, this); |
86a2f789 | 947 | storeReleaseRequest(http->storeEntry()); |
948 | storeBuffer(http->storeEntry()); | |
7dc5f514 | 949 | HttpReply *rep = new HttpReply; |
450e0c10 | 950 | HttpVersion version(1,0); |
06a5ae20 | 951 | rep->setHeaders(version, HTTP_OK, NULL, "text/plain", |
5cafad19 | 952 | http->request->prefixLen(), 0, squid_curtime); |
db237875 | 953 | http->storeEntry()->replaceHttpReply(rep); |
5cafad19 | 954 | http->request->swapOut(http->storeEntry()); |
86a2f789 | 955 | http->storeEntry()->complete(); |
edce4d98 | 956 | } |
957 | ||
958 | #define SENDING_BODY 0 | |
959 | #define SENDING_HDRSONLY 1 | |
960 | int | |
0655fa4d | 961 | clientReplyContext::checkTransferDone() |
edce4d98 | 962 | { |
86a2f789 | 963 | StoreEntry *entry = http->storeEntry(); |
62e76326 | 964 | |
edce4d98 | 965 | if (entry == NULL) |
62e76326 | 966 | return 0; |
967 | ||
968 | /* | |
edce4d98 | 969 | * For now, 'done_copying' is used for special cases like |
970 | * Range and HEAD requests. | |
971 | */ | |
0655fa4d | 972 | if (http->flags.done_copying) |
62e76326 | 973 | return 1; |
974 | ||
edce4d98 | 975 | /* |
976 | * Handle STORE_OK objects. | |
977 | * objectLen(entry) will be set proprely. | |
978 | * RC: Does objectLen(entry) include the Headers? | |
0e3be1ea | 979 | * RC: Yes. |
edce4d98 | 980 | */ |
981 | if (entry->store_status == STORE_OK) { | |
0655fa4d | 982 | return storeOKTransferDone(); |
e39b9382 | 983 | } else { |
0655fa4d | 984 | return storeNotOKTransferDone(); |
edce4d98 | 985 | } |
e39b9382 | 986 | } |
987 | ||
988 | int | |
989 | clientReplyContext::storeOKTransferDone() const | |
990 | { | |
86a2f789 | 991 | if (http->out.offset >= objectLen(http->storeEntry()) - headers_sz) |
62e76326 | 992 | return 1; |
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 | |
1029 | size_t expectedLength = http->out.headers_sz + reply->content_length; | |
62e76326 | 1030 | |
e39b9382 | 1031 | if (http->out.size < expectedLength) |
62e76326 | 1032 | return 0; |
edce4d98 | 1033 | else |
62e76326 | 1034 | return 1; |
edce4d98 | 1035 | } |
1036 | ||
1037 | ||
edce4d98 | 1038 | /* A write has completed, what is the next status based on the |
1039 | * canonical request data? | |
1040 | * 1 something is wrong | |
1041 | * 0 nothing is wrong. | |
1042 | * | |
1043 | */ | |
1044 | int | |
59a1efb2 | 1045 | clientHttpRequestStatus(int fd, ClientHttpRequest const *http) |
edce4d98 | 1046 | { |
1047 | #if SIZEOF_SIZE_T == 4 | |
62e76326 | 1048 | |
edce4d98 | 1049 | if (http->out.size > 0x7FFF0000) { |
62e76326 | 1050 | debug(88, 1) ("WARNING: closing FD %d to prevent counter overflow\n", |
1051 | fd); | |
1052 | debug(88, 1) ("\tclient %s\n", | |
a2ac85d9 | 1053 | inet_ntoa(http->getConn().getRaw() != NULL ? http->getConn()->peer.sin_addr : no_addr)); |
62e76326 | 1054 | debug(88, 1) ("\treceived %d bytes\n", (int) http->out.size); |
1055 | debug(88, 1) ("\tURI %s\n", http->log_uri); | |
1056 | return 1; | |
edce4d98 | 1057 | } |
62e76326 | 1058 | |
edce4d98 | 1059 | #endif |
1060 | #if SIZEOF_OFF_T == 4 | |
1061 | if (http->out.offset > 0x7FFF0000) { | |
62e76326 | 1062 | debug(88, 1) ("WARNING: closing FD %d to prevent counter overflow\n", |
1063 | fd); | |
1064 | debug(88, 1) ("\tclient %s\n", | |
a2ac85d9 | 1065 | inet_ntoa(http->getConn().getRaw() != NULL ? http->getConn()->peer.sin_addr : no_addr)); |
62e76326 | 1066 | debug(88, 1) ("\treceived %d bytes (offset %d)\n", (int) http->out.size, |
1067 | (int) http->out.offset); | |
1068 | debug(88, 1) ("\tURI %s\n", http->log_uri); | |
1069 | return 1; | |
edce4d98 | 1070 | } |
62e76326 | 1071 | |
edce4d98 | 1072 | #endif |
1073 | return 0; | |
1074 | } | |
1075 | ||
62e76326 | 1076 | /* Preconditions: |
edce4d98 | 1077 | * *http is a valid structure. |
1078 | * fd is either -1, or an open fd. | |
1079 | * | |
1080 | * TODO: enumify this | |
1081 | * | |
1082 | * This function is used by any http request sink, to determine the status | |
1083 | * of the object. | |
1084 | */ | |
1085 | clientStream_status_t | |
59a1efb2 | 1086 | clientReplyStatus(clientStreamNode * aNode, ClientHttpRequest * http) |
edce4d98 | 1087 | { |
0655fa4d | 1088 | clientReplyContext *context = dynamic_cast<clientReplyContext *>(aNode->data.getRaw()); |
1089 | assert (context); | |
1090 | assert (context->http == http); | |
1091 | return context->replyStatus(); | |
1092 | } | |
1093 | ||
1094 | clientStream_status_t | |
1095 | clientReplyContext::replyStatus() | |
1096 | { | |
edce4d98 | 1097 | int done; |
1098 | /* Here because lower nodes don't need it */ | |
62e76326 | 1099 | |
86a2f789 | 1100 | if (http->storeEntry() == NULL) |
62e76326 | 1101 | return STREAM_FAILED; /* yuck, but what can we do? */ |
1102 | ||
86a2f789 | 1103 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) |
62e76326 | 1104 | /* TODO: Could upstream read errors (result.flags.error) be |
1105 | * lost, and result in undersize requests being considered | |
1106 | * complete. Should we tcp reset such connections ? | |
1107 | */ | |
1108 | return STREAM_FAILED; | |
1109 | ||
0655fa4d | 1110 | if ((done = checkTransferDone()) != 0 || flags.complete) { |
62e76326 | 1111 | debug(88, 5) ("clientReplyStatus: transfer is DONE\n"); |
1112 | /* Ok we're finished, but how? */ | |
1113 | ||
06a5ae20 | 1114 | if (http->storeEntry()->getReply()->bodySize(http->request->method) < 0) { |
62e76326 | 1115 | debug(88, 5) ("clientReplyStatus: closing, content_length < 0\n"); |
1116 | return STREAM_FAILED; | |
1117 | } | |
1118 | ||
1119 | if (!done) { | |
1120 | debug(88, 5) ("clientReplyStatus: closing, !done, but read 0 bytes\n"); | |
1121 | return STREAM_FAILED; | |
1122 | } | |
1123 | ||
0655fa4d | 1124 | if (!http->gotEnough()) { |
62e76326 | 1125 | debug(88, 5) ("clientReplyStatus: client didn't get all it expected\n"); |
1126 | return STREAM_UNPLANNED_COMPLETE; | |
1127 | } | |
1128 | ||
1129 | if (http->request->flags.proxy_keepalive) { | |
1130 | debug(88, 5) ("clientReplyStatus: stream complete and can keepalive\n"); | |
1131 | return STREAM_COMPLETE; | |
1132 | } | |
1133 | ||
1134 | debug(88, 5) ("clientReplyStatus: stream was not expected to complete!\n"); | |
1135 | return STREAM_UNPLANNED_COMPLETE; | |
edce4d98 | 1136 | } |
62e76326 | 1137 | |
b51aec66 | 1138 | if (http->isReplyBodyTooLarge(http->out.offset - 4096)) { |
1139 | /* 4096 is a margin for the HTTP headers included in out.offset */ | |
62e76326 | 1140 | debug(88, 5) ("clientReplyStatus: client reply body is too large\n"); |
1141 | return STREAM_FAILED; | |
0e3be1ea | 1142 | } |
62e76326 | 1143 | |
edce4d98 | 1144 | return STREAM_NONE; |
1145 | } | |
1146 | ||
62e76326 | 1147 | /* Responses with no body will not have a content-type header, |
edce4d98 | 1148 | * which breaks the rep_mime_type acl, which |
1149 | * coincidentally, is the most common acl for reply access lists. | |
1150 | * A better long term fix for this is to allow acl matchs on the various | |
1151 | * status codes, and then supply a default ruleset that puts these | |
1152 | * codes before any user defines access entries. That way the user | |
1153 | * can choose to block these responses where appropriate, but won't get | |
1154 | * mysterious breakages. | |
1155 | */ | |
0655fa4d | 1156 | bool |
1157 | clientReplyContext::alwaysAllowResponse(http_status sline) const | |
edce4d98 | 1158 | { |
4ef4b952 | 1159 | bool result; |
1160 | ||
edce4d98 | 1161 | switch (sline) { |
62e76326 | 1162 | |
edce4d98 | 1163 | case HTTP_CONTINUE: |
62e76326 | 1164 | |
edce4d98 | 1165 | case HTTP_SWITCHING_PROTOCOLS: |
62e76326 | 1166 | |
edce4d98 | 1167 | case HTTP_PROCESSING: |
62e76326 | 1168 | |
edce4d98 | 1169 | case HTTP_NO_CONTENT: |
62e76326 | 1170 | |
edce4d98 | 1171 | case HTTP_NOT_MODIFIED: |
4ef4b952 | 1172 | result = true; |
62e76326 | 1173 | break; |
1174 | ||
edce4d98 | 1175 | default: |
4ef4b952 | 1176 | result = false; |
edce4d98 | 1177 | } |
4ef4b952 | 1178 | |
1179 | return result; | |
edce4d98 | 1180 | } |
1181 | ||
1182 | /* | |
1183 | * filters out unwanted entries from original reply header | |
1184 | * adds extra entries if we have more info than origin server | |
1185 | * adds Squid specific entries | |
1186 | */ | |
0655fa4d | 1187 | void |
1188 | clientReplyContext::buildReplyHeader() | |
edce4d98 | 1189 | { |
7dc5f514 | 1190 | HttpHeader *hdr = &reply->header; |
c8be6d7b | 1191 | int is_hit = logTypeIsATcpHit(http->logType); |
190154cf | 1192 | HttpRequest *request = http->request; |
edce4d98 | 1193 | #if DONT_FILTER_THESE |
1194 | /* but you might want to if you run Squid as an HTTP accelerator */ | |
a9925b40 | 1195 | /* hdr->delById(HDR_ACCEPT_RANGES); */ |
1196 | hdr->delById(HDR_ETAG); | |
edce4d98 | 1197 | #endif |
62e76326 | 1198 | |
a9925b40 | 1199 | hdr->delById(HDR_PROXY_CONNECTION); |
edce4d98 | 1200 | /* here: Keep-Alive is a field-name, not a connection directive! */ |
a9925b40 | 1201 | hdr->delByName("Keep-Alive"); |
edce4d98 | 1202 | /* remove Set-Cookie if a hit */ |
62e76326 | 1203 | |
edce4d98 | 1204 | if (is_hit) |
a9925b40 | 1205 | hdr->delById(HDR_SET_COOKIE); |
62e76326 | 1206 | |
7dc5f514 | 1207 | /* |
1208 | * Be sure to obey the Connection header | |
1209 | */ | |
1210 | reply->header.removeConnectionHeaderEntries(); | |
62e76326 | 1211 | |
1212 | // if (request->range) | |
7dc5f514 | 1213 | // clientBuildRangeHeader(http, reply); |
edce4d98 | 1214 | /* |
1215 | * Add a estimated Age header on cache hits. | |
1216 | */ | |
1217 | if (is_hit) { | |
62e76326 | 1218 | /* |
1219 | * Remove any existing Age header sent by upstream caches | |
1220 | * (note that the existing header is passed along unmodified | |
1221 | * on cache misses) | |
1222 | */ | |
a9925b40 | 1223 | hdr->delById(HDR_AGE); |
62e76326 | 1224 | /* |
1225 | * This adds the calculated object age. Note that the details of the | |
1226 | * age calculation is performed by adjusting the timestamp in | |
1227 | * storeTimestampsSet(), not here. | |
1228 | * | |
1229 | * BROWSER WORKAROUND: IE sometimes hangs when receiving a 0 Age | |
1230 | * header, so don't use it unless there is a age to report. Please | |
1231 | * note that Age is only used to make a conservative estimation of | |
1232 | * the objects age, so a Age: 0 header does not add any useful | |
1233 | * information to the reply in any case. | |
1234 | */ | |
1235 | ||
86a2f789 | 1236 | if (NULL == http->storeEntry()) |
62e76326 | 1237 | (void) 0; |
86a2f789 | 1238 | else if (http->storeEntry()->timestamp < 0) |
62e76326 | 1239 | (void) 0; |
bbe58ab5 | 1240 | |
1241 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_SPECIAL)) { | |
a9925b40 | 1242 | hdr->delById(HDR_DATE); |
1243 | hdr->insertTime(HDR_DATE, squid_curtime); | |
bbe58ab5 | 1244 | } else if (http->storeEntry()->timestamp < squid_curtime) { |
a9925b40 | 1245 | hdr->putInt(HDR_AGE, |
1246 | squid_curtime - http->storeEntry()->timestamp); | |
62e76326 | 1247 | /* Signal old objects. NB: rfc 2616 is not clear, |
1248 | * by implication, on whether we should do this to all | |
1249 | * responses, or only cache hits. | |
1250 | * 14.46 states it ONLY applys for heuristically caclulated | |
1251 | * freshness values, 13.2.4 doesn't specify the same limitation. | |
1252 | * We interpret RFC 2616 under the combination. | |
1253 | */ | |
1254 | /* TODO: if maxage or s-maxage is present, don't do this */ | |
1255 | ||
86a2f789 | 1256 | if (squid_curtime - http->storeEntry()->timestamp >= 86400) { |
62e76326 | 1257 | char tempbuf[512]; |
1258 | snprintf (tempbuf, sizeof(tempbuf), "%s %s %s", | |
1259 | "113", ThisCache, | |
1260 | "This cache hit is still fresh and more than 1 day old"); | |
a9925b40 | 1261 | hdr->putStr(HDR_WARNING, tempbuf); |
62e76326 | 1262 | } |
1263 | } | |
528b2c61 | 1264 | |
edce4d98 | 1265 | } |
62e76326 | 1266 | |
0bd9aa82 | 1267 | /* Filter unproxyable authentication types */ |
ddd31ed3 | 1268 | if (http->logType != LOG_TCP_DENIED && |
a9925b40 | 1269 | (hdr->has(HDR_WWW_AUTHENTICATE) || hdr->has(HDR_PROXY_AUTHENTICATE))) { |
62e76326 | 1270 | HttpHeaderPos pos = HttpHeaderInitPos; |
1271 | HttpHeaderEntry *e; | |
1272 | ||
a9925b40 | 1273 | while ((e = hdr->getEntry(&pos))) { |
62e76326 | 1274 | if (e->id == HDR_WWW_AUTHENTICATE || e->id == HDR_PROXY_AUTHENTICATE) { |
1275 | const char *value = e->value.buf(); | |
1276 | ||
1277 | if ((strncasecmp(value, "NTLM", 4) == 0 && | |
1278 | (value[4] == '\0' || value[4] == ' ')) | |
1279 | || | |
1280 | (strncasecmp(value, "Negotiate", 9) == 0 && | |
1281 | (value[9] == '\0' || value[9] == ' '))) | |
a9925b40 | 1282 | hdr->delAt(pos); |
62e76326 | 1283 | } |
1284 | } | |
0bd9aa82 | 1285 | } |
62e76326 | 1286 | |
edce4d98 | 1287 | /* Handle authentication headers */ |
1288 | if (request->auth_user_request) | |
7dc5f514 | 1289 | authenticateFixHeader(reply, request->auth_user_request, request, |
62e76326 | 1290 | http->flags.accel, 0); |
1291 | ||
edce4d98 | 1292 | /* Append X-Cache */ |
1293 | httpHeaderPutStrf(hdr, HDR_X_CACHE, "%s from %s", | |
62e76326 | 1294 | is_hit ? "HIT" : "MISS", getMyHostname()); |
1295 | ||
edce4d98 | 1296 | #if USE_CACHE_DIGESTS |
1297 | /* Append X-Cache-Lookup: -- temporary hack, to be removed @?@ @?@ */ | |
1298 | httpHeaderPutStrf(hdr, HDR_X_CACHE_LOOKUP, "%s from %s:%d", | |
0655fa4d | 1299 | lookup_type ? lookup_type : "NONE", |
62e76326 | 1300 | getMyHostname(), getMyPort()); |
1301 | ||
edce4d98 | 1302 | #endif |
62e76326 | 1303 | |
7dc5f514 | 1304 | if (reply->bodySize(request->method) < 0) { |
62e76326 | 1305 | debug(88, |
1306 | 3) | |
1307 | ("clientBuildReplyHeader: can't keep-alive, unknown body size\n"); | |
1308 | request->flags.proxy_keepalive = 0; | |
edce4d98 | 1309 | } |
62e76326 | 1310 | |
f5e45ad8 | 1311 | if (fdUsageHigh()&& !request->flags.must_keepalive) { |
a1ca9253 | 1312 | debug(88, 3) ("clientBuildReplyHeader: Not many unused FDs, can't keep-alive\n"); |
1313 | request->flags.proxy_keepalive = 0; | |
1314 | } | |
1315 | ||
58850d15 | 1316 | if (!Config.onoff.error_pconns && reply->sline.status >= 400 && !request->flags.must_keepalive) { |
1317 | debug(33, 3) ("clientBuildReplyHeader: Error, don't keep-alive\n"); | |
1318 | request->flags.proxy_keepalive = 0; | |
1319 | } | |
1320 | ||
f5e45ad8 | 1321 | if (!Config.onoff.client_pconns && !request->flags.must_keepalive) |
1322 | request->flags.proxy_keepalive = 0; | |
1323 | ||
4dea3fdd | 1324 | /* Append VIA */ |
c8be6d7b | 1325 | { |
62e76326 | 1326 | LOCAL_ARRAY(char, bbuf, MAX_URL + 32); |
a9925b40 | 1327 | String strVia = hdr->getList(HDR_VIA); |
62e76326 | 1328 | snprintf(bbuf, sizeof(bbuf), "%d.%d %s", |
7dc5f514 | 1329 | reply->sline.version.major, |
1330 | reply->sline.version.minor, | |
62e76326 | 1331 | ThisCache); |
1332 | strListAdd(&strVia, bbuf, ','); | |
a9925b40 | 1333 | hdr->delById(HDR_VIA); |
1334 | hdr->putStr(HDR_VIA, strVia.buf()); | |
62e76326 | 1335 | strVia.clean(); |
c8be6d7b | 1336 | } |
edce4d98 | 1337 | /* Signal keep-alive if needed */ |
a9925b40 | 1338 | hdr->putStr(http->flags.accel ? HDR_CONNECTION : HDR_PROXY_CONNECTION, |
1339 | request->flags.proxy_keepalive ? "keep-alive" : "close"); | |
62e76326 | 1340 | |
edce4d98 | 1341 | #if ADD_X_REQUEST_URI |
1342 | /* | |
1343 | * Knowing the URI of the request is useful when debugging persistent | |
1344 | * connections in a client; we cannot guarantee the order of http headers, | |
1345 | * but X-Request-URI is likely to be the very last header to ease use from a | |
1346 | * debugger [hdr->entries.count-1]. | |
1347 | */ | |
a9925b40 | 1348 | hdr->putStr(HDR_X_REQUEST_URI, |
1349 | http->memOjbect()->url ? http->memObject()->url : http->uri); | |
62e76326 | 1350 | |
edce4d98 | 1351 | #endif |
62e76326 | 1352 | |
8c01ada0 | 1353 | httpHdrMangleList(hdr, request, ROR_REPLY); |
edce4d98 | 1354 | } |
1355 | ||
1356 | ||
0655fa4d | 1357 | void |
1358 | clientReplyContext::buildReply(const char *buf, size_t size) | |
edce4d98 | 1359 | { |
edce4d98 | 1360 | size_t k = headersEnd(buf, size); |
62e76326 | 1361 | |
0655fa4d | 1362 | if (!k) |
1363 | return; | |
1364 | ||
7dc5f514 | 1365 | assert(reply == NULL); |
0655fa4d | 1366 | |
7dc5f514 | 1367 | HttpReply *rep = new HttpReply; |
1368 | ||
1369 | reply = HTTPMSGLOCK(rep); | |
1370 | ||
1371 | if (!reply->parseCharBuf(buf, k)) { | |
62e76326 | 1372 | /* parsing failure, get rid of the invalid reply */ |
7dc5f514 | 1373 | HTTPMSGUNLOCK(reply); |
62e76326 | 1374 | |
0655fa4d | 1375 | if (http->request->range) { |
7dc5f514 | 1376 | debugs(0,0,HERE << "look for bug here"); |
62e76326 | 1377 | /* this will fail and destroy request->range */ |
7dc5f514 | 1378 | // clientBuildRangeHeader(http, reply); |
62e76326 | 1379 | } |
b51aec66 | 1380 | |
979da574 | 1381 | return; |
edce4d98 | 1382 | } |
62e76326 | 1383 | |
0655fa4d | 1384 | /* enforce 1.0 reply version */ |
7dc5f514 | 1385 | reply->sline.version = HttpVersion(1,0); |
0655fa4d | 1386 | |
1387 | /* do header conversions */ | |
1388 | buildReplyHeader(); | |
edce4d98 | 1389 | } |
1390 | ||
e6ccf245 | 1391 | void |
1392 | clientReplyContext::identifyStoreObject() | |
edce4d98 | 1393 | { |
190154cf | 1394 | HttpRequest *r = http->request; |
62e76326 | 1395 | |
e6ccf245 | 1396 | if (r->flags.cachable || r->flags.internal) { |
62e76326 | 1397 | lookingforstore = 5; |
1398 | StoreEntry::getPublicByRequest (this, r); | |
e6ccf245 | 1399 | } else |
62e76326 | 1400 | identifyFoundObject (NullStoreEntry::getInstance()); |
e6ccf245 | 1401 | } |
1402 | ||
1403 | void | |
1404 | clientReplyContext::identifyFoundObject(StoreEntry *newEntry) | |
1405 | { | |
1406 | StoreEntry *e = newEntry; | |
190154cf | 1407 | HttpRequest *r = http->request; |
62e76326 | 1408 | |
e6ccf245 | 1409 | if (e->isNull()) { |
86a2f789 | 1410 | http->storeEntry(NULL); |
e6ccf245 | 1411 | } else { |
86a2f789 | 1412 | http->storeEntry(e); |
e6ccf245 | 1413 | } |
62e76326 | 1414 | |
86a2f789 | 1415 | e = http->storeEntry(); |
a12a049a | 1416 | /* Release IP-cache entries on reload */ |
1417 | ||
1418 | if (r->flags.nocache) { | |
1419 | ||
1420 | #if USE_DNSSERVERS | |
62e76326 | 1421 | |
62e76326 | 1422 | ipcacheInvalidate(r->host); |
1423 | ||
a12a049a | 1424 | #else |
1425 | ||
1426 | ipcacheInvalidateNegative(r->host); | |
1427 | ||
1428 | #endif /* USE_DNSSERVERS */ | |
1429 | ||
1430 | } | |
1431 | ||
edce4d98 | 1432 | #if HTTP_VIOLATIONS |
62e76326 | 1433 | |
a12a049a | 1434 | else if (r->flags.nocache_hack) { |
1435 | ||
1436 | #if USE_DNSSERVERS | |
1437 | ||
62e76326 | 1438 | ipcacheInvalidate(r->host); |
1439 | ||
a12a049a | 1440 | #else |
1441 | ||
1442 | ipcacheInvalidateNegative(r->host); | |
1443 | ||
1444 | #endif /* USE_DNSSERVERS */ | |
1445 | ||
1446 | } | |
1447 | ||
1448 | #endif /* HTTP_VIOLATIONS */ | |
edce4d98 | 1449 | #if USE_CACHE_DIGESTS |
62e76326 | 1450 | |
86a2f789 | 1451 | lookup_type = http->storeEntry() ? "HIT" : "MISS"; |
62e76326 | 1452 | |
edce4d98 | 1453 | #endif |
62e76326 | 1454 | |
86a2f789 | 1455 | if (NULL == http->storeEntry()) { |
62e76326 | 1456 | /* this object isn't in the cache */ |
1457 | debug(85, 3) ("clientProcessRequest2: storeGet() MISS\n"); | |
1458 | http->logType = LOG_TCP_MISS; | |
1459 | doGetMoreData(); | |
1460 | return; | |
edce4d98 | 1461 | } |
62e76326 | 1462 | |
edce4d98 | 1463 | if (Config.onoff.offline) { |
62e76326 | 1464 | debug(85, 3) ("clientProcessRequest2: offline HIT\n"); |
1465 | http->logType = LOG_TCP_HIT; | |
1466 | doGetMoreData(); | |
1467 | return; | |
edce4d98 | 1468 | } |
62e76326 | 1469 | |
edce4d98 | 1470 | if (http->redirect.status) { |
62e76326 | 1471 | /* force this to be a miss */ |
86a2f789 | 1472 | http->storeEntry(NULL); |
62e76326 | 1473 | http->logType = LOG_TCP_MISS; |
1474 | doGetMoreData(); | |
1475 | return; | |
edce4d98 | 1476 | } |
62e76326 | 1477 | |
edce4d98 | 1478 | if (!storeEntryValidToSend(e)) { |
62e76326 | 1479 | debug(85, 3) ("clientProcessRequest2: !storeEntryValidToSend MISS\n"); |
86a2f789 | 1480 | http->storeEntry(NULL); |
62e76326 | 1481 | http->logType = LOG_TCP_MISS; |
1482 | doGetMoreData(); | |
1483 | return; | |
edce4d98 | 1484 | } |
62e76326 | 1485 | |
edce4d98 | 1486 | if (EBIT_TEST(e->flags, ENTRY_SPECIAL)) { |
62e76326 | 1487 | /* Special entries are always hits, no matter what the client says */ |
1488 | debug(85, 3) ("clientProcessRequest2: ENTRY_SPECIAL HIT\n"); | |
1489 | http->logType = LOG_TCP_HIT; | |
1490 | doGetMoreData(); | |
1491 | return; | |
edce4d98 | 1492 | } |
62e76326 | 1493 | |
edce4d98 | 1494 | if (r->flags.nocache) { |
62e76326 | 1495 | debug(85, 3) ("clientProcessRequest2: no-cache REFRESH MISS\n"); |
86a2f789 | 1496 | http->storeEntry(NULL); |
62e76326 | 1497 | http->logType = LOG_TCP_CLIENT_REFRESH_MISS; |
1498 | doGetMoreData(); | |
1499 | return; | |
edce4d98 | 1500 | } |
62e76326 | 1501 | |
edce4d98 | 1502 | debug(85, 3) ("clientProcessRequest2: default HIT\n"); |
e6ccf245 | 1503 | http->logType = LOG_TCP_HIT; |
1504 | doGetMoreData(); | |
edce4d98 | 1505 | } |
1506 | ||
1507 | /* Request more data from the store for the client Stream | |
1508 | * This is *the* entry point to this module. | |
1509 | * | |
1510 | * Preconditions: | |
1511 | * This is the head of the list. | |
1512 | * There is at least one more node. | |
1513 | * data context is not null | |
1514 | */ | |
1515 | void | |
59a1efb2 | 1516 | clientGetMoreData(clientStreamNode * aNode, ClientHttpRequest * http) |
edce4d98 | 1517 | { |
edce4d98 | 1518 | /* Test preconditions */ |
e6ccf245 | 1519 | assert(aNode != NULL); |
1520 | assert(cbdataReferenceValid(aNode)); | |
e6ccf245 | 1521 | assert(aNode->node.prev == NULL); |
1522 | assert(aNode->node.next != NULL); | |
0655fa4d | 1523 | clientReplyContext *context = dynamic_cast<clientReplyContext *>(aNode->data.getRaw()); |
1524 | assert (context); | |
edce4d98 | 1525 | assert(context->http == http); |
1526 | ||
0655fa4d | 1527 | clientStreamNode *next = ( clientStreamNode *)aNode->node.next->data; |
62e76326 | 1528 | |
edce4d98 | 1529 | if (!context->ourNode) |
62e76326 | 1530 | context->ourNode = aNode; |
1531 | ||
e6ccf245 | 1532 | /* no cbdatareference, this is only used once, and safely */ |
edce4d98 | 1533 | if (context->flags.storelogiccomplete) { |
62e76326 | 1534 | StoreIOBuffer tempBuffer; |
1535 | tempBuffer.offset = next->readBuffer.offset + context->headers_sz; | |
1536 | tempBuffer.length = next->readBuffer.length; | |
1537 | tempBuffer.data = next->readBuffer.data; | |
1538 | ||
86a2f789 | 1539 | storeClientCopy(context->sc, http->storeEntry(), |
0655fa4d | 1540 | tempBuffer, clientReplyContext::SendMoreData, context); |
62e76326 | 1541 | return; |
edce4d98 | 1542 | } |
62e76326 | 1543 | |
edce4d98 | 1544 | if (context->http->request->method == METHOD_PURGE) { |
62e76326 | 1545 | context->purgeRequest(); |
1546 | return; | |
edce4d98 | 1547 | } |
62e76326 | 1548 | |
edce4d98 | 1549 | if (context->http->request->method == METHOD_TRACE) { |
62e76326 | 1550 | if (context->http->request->max_forwards == 0) { |
0655fa4d | 1551 | context->traceReply(aNode); |
62e76326 | 1552 | return; |
1553 | } | |
1554 | ||
1555 | /* continue forwarding, not finished yet. */ | |
1556 | http->logType = LOG_TCP_MISS; | |
1557 | ||
1558 | context->doGetMoreData(); | |
edce4d98 | 1559 | } else |
62e76326 | 1560 | context->identifyStoreObject(); |
e6ccf245 | 1561 | } |
1562 | ||
1563 | void | |
1564 | clientReplyContext::doGetMoreData() | |
1565 | { | |
edce4d98 | 1566 | /* We still have to do store logic processing - vary, cache hit etc */ |
62e76326 | 1567 | |
86a2f789 | 1568 | if (http->storeEntry() != NULL) { |
62e76326 | 1569 | /* someone found the object in the cache for us */ |
1570 | StoreIOBuffer tempBuffer; | |
34266cde | 1571 | |
1572 | http->storeEntry()->lock() | |
1573 | ||
1574 | ; | |
62e76326 | 1575 | |
86a2f789 | 1576 | if (http->storeEntry()->mem_obj == NULL) { |
62e76326 | 1577 | /* |
1578 | * This if-block exists because we don't want to clobber | |
1579 | * a preexiting mem_obj->method value if the mem_obj | |
1580 | * already exists. For example, when a HEAD request | |
1581 | * is a cache hit for a GET response, we want to keep | |
1582 | * the method as GET. | |
1583 | */ | |
86a2f789 | 1584 | storeCreateMemObject(http->storeEntry(), http->uri, |
62e76326 | 1585 | http->log_uri); |
86a2f789 | 1586 | http->storeEntry()->mem_obj->method = |
62e76326 | 1587 | http->request->method; |
1588 | } | |
1589 | ||
86a2f789 | 1590 | sc = storeClientListAdd(http->storeEntry(), this); |
edce4d98 | 1591 | #if DELAY_POOLS |
62e76326 | 1592 | |
1593 | sc->setDelayId(DelayId::DelayClient(http)); | |
edce4d98 | 1594 | #endif |
62e76326 | 1595 | |
1596 | assert(http->logType == LOG_TCP_HIT); | |
1597 | reqofs = 0; | |
1598 | /* guarantee nothing has been sent yet! */ | |
1599 | assert(http->out.size == 0); | |
1600 | assert(http->out.offset == 0); | |
1601 | tempBuffer.offset = reqofs; | |
1602 | tempBuffer.length = getNextNode()->readBuffer.length; | |
1603 | tempBuffer.data = getNextNode()->readBuffer.data; | |
86a2f789 | 1604 | storeClientCopy(sc, http->storeEntry(), |
0655fa4d | 1605 | tempBuffer, CacheHit, this); |
edce4d98 | 1606 | } else { |
62e76326 | 1607 | /* MISS CASE, http->logType is already set! */ |
0655fa4d | 1608 | processMiss(); |
edce4d98 | 1609 | } |
1610 | } | |
1611 | ||
1612 | /* the next node has removed itself from the stream. */ | |
1613 | void | |
59a1efb2 | 1614 | clientReplyDetach(clientStreamNode * node, ClientHttpRequest * http) |
edce4d98 | 1615 | { |
1616 | /* detach from the stream */ | |
edce4d98 | 1617 | clientStreamDetach(node, http); |
1618 | } | |
1619 | ||
1620 | /* | |
1621 | * accepts chunk of a http message in buf, parses prefix, filters headers and | |
1622 | * such, writes processed message to the message recipient | |
1623 | */ | |
1624 | void | |
0655fa4d | 1625 | clientReplyContext::SendMoreData(void *data, StoreIOBuffer result) |
edce4d98 | 1626 | { |
e6ccf245 | 1627 | clientReplyContext *context = static_cast<clientReplyContext *>(data); |
528b2c61 | 1628 | context->sendMoreData (result); |
1629 | } | |
1630 | ||
1631 | void | |
1632 | clientReplyContext::makeThisHead() | |
1633 | { | |
1634 | /* At least, I think thats what this does */ | |
1635 | dlinkDelete(&http->active, &ClientActiveRequests); | |
1636 | dlinkAdd(http, &http->active, &ClientActiveRequests); | |
1637 | } | |
1638 | ||
1639 | bool | |
1640 | clientReplyContext::errorInStream(StoreIOBuffer const &result, size_t const &sizeToProcess)const | |
1641 | { | |
1642 | return /* aborted request */ | |
86a2f789 | 1643 | (http->storeEntry() && EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) || |
62e76326 | 1644 | /* Upstream read error */ (result.flags.error) || |
1645 | /* Upstream EOF */ (sizeToProcess == 0); | |
528b2c61 | 1646 | } |
1647 | ||
1648 | void | |
1649 | clientReplyContext::sendStreamError(StoreIOBuffer const &result) | |
1650 | { | |
1651 | /* call clientWriteComplete so the client socket gets closed */ | |
1652 | /* We call into the stream, because we don't know that there is a | |
1653 | * client socket! | |
1654 | */ | |
1655 | debug(88,5)("clientReplyContext::sendStreamError: A stream error has occured, marking as complete and sending no data.\n"); | |
1656 | StoreIOBuffer tempBuffer; | |
1657 | flags.complete = 1; | |
1658 | tempBuffer.flags.error = result.flags.error; | |
1659 | clientStreamCallback((clientStreamNode*)http->client_stream.head->data, http, NULL, | |
62e76326 | 1660 | tempBuffer); |
528b2c61 | 1661 | } |
1662 | ||
1663 | void | |
1664 | clientReplyContext::pushStreamData(StoreIOBuffer const &result, char *source) | |
1665 | { | |
1666 | StoreIOBuffer tempBuffer; | |
62e76326 | 1667 | |
528b2c61 | 1668 | if (result.length == 0) { |
62e76326 | 1669 | debug (88,5)("clientReplyContext::pushStreamData: marking request as complete due to 0 length store result\n"); |
1670 | flags.complete = 1; | |
528b2c61 | 1671 | } |
62e76326 | 1672 | |
43ae1d95 | 1673 | assert(result.offset - headers_sz == next()->readBuffer.offset); |
528b2c61 | 1674 | tempBuffer.offset = result.offset - headers_sz; |
1675 | tempBuffer.length = result.length; | |
62e76326 | 1676 | |
43ae1d95 | 1677 | if (tempBuffer.length) |
1678 | tempBuffer.data = source; | |
62e76326 | 1679 | |
528b2c61 | 1680 | clientStreamCallback((clientStreamNode*)http->client_stream.head->data, http, NULL, |
62e76326 | 1681 | tempBuffer); |
528b2c61 | 1682 | } |
1683 | ||
1684 | clientStreamNode * | |
1685 | clientReplyContext::next() const | |
1686 | { | |
1687 | assert ( (clientStreamNode*)http->client_stream.head->next->data == getNextNode()); | |
1688 | return getNextNode(); | |
1689 | } | |
1690 | ||
1691 | void | |
0655fa4d | 1692 | clientReplyContext::waitForMoreData () |
528b2c61 | 1693 | { |
1694 | debug(88,5)("clientReplyContext::waitForMoreData: Waiting for more data to parse reply headers in client side.\n"); | |
1695 | /* We don't have enough to parse the metadata yet */ | |
1696 | /* TODO: the store should give us out of band metadata and | |
1697 | * obsolete this routine | |
1698 | */ | |
1699 | /* wait for more to arrive */ | |
528b2c61 | 1700 | startSendProcess(); |
1701 | } | |
1702 | ||
1703 | void | |
1704 | clientReplyContext::startSendProcess() | |
1705 | { | |
0655fa4d | 1706 | debug(88,5)("clientReplyContext::startSendProcess: triggering store read to SendMoreData\n"); |
528b2c61 | 1707 | assert(reqofs <= HTTP_REQBUF_SZ); |
1708 | /* TODO: copy into the supplied buffer */ | |
1709 | StoreIOBuffer tempBuffer; | |
1710 | tempBuffer.offset = reqofs; | |
1711 | tempBuffer.length = next()->readBuffer.length - reqofs; | |
1712 | tempBuffer.data = next()->readBuffer.data + reqofs; | |
86a2f789 | 1713 | storeClientCopy(sc, http->storeEntry(), |
0655fa4d | 1714 | tempBuffer, SendMoreData, this); |
1715 | } | |
1716 | ||
b51aec66 | 1717 | /* |
1718 | * Calculates the maximum size allowed for an HTTP response | |
1719 | */ | |
1720 | void | |
1721 | clientReplyContext::buildMaxBodySize(HttpReply * reply) | |
1722 | { | |
ef1955a5 | 1723 | acl_size_t *l = Config.ReplyBodySize; |
1724 | ACLChecklist *ch; | |
b51aec66 | 1725 | |
8777d90e | 1726 | if (http->logType == LOG_TCP_DENIED) |
1727 | return; | |
1728 | ||
ef1955a5 | 1729 | ch = clientAclChecklistCreate(NULL, http); |
8777d90e | 1730 | |
7dc5f514 | 1731 | ch->reply = HTTPMSGLOCK(reply); |
ef1955a5 | 1732 | |
1733 | for (l = Config.ReplyBodySize; l; l = l -> next) { | |
7684c4b1 | 1734 | if (ch->matchAclListFast(l->aclList)) { |
43cb430e | 1735 | if (l->size != static_cast<size_t>(-1)) { |
1736 | debug(58, 3) ("clientReplyContext: Setting maxBodySize to %ld\n", (long int) l->size); | |
ef1955a5 | 1737 | http->maxReplyBodySize(l->size); |
43cb430e | 1738 | } |
b51aec66 | 1739 | |
ef1955a5 | 1740 | break; |
1741 | } | |
b51aec66 | 1742 | } |
ef1955a5 | 1743 | |
1744 | delete ch; | |
b51aec66 | 1745 | } |
1746 | ||
4993f571 | 1747 | void |
1748 | clientReplyContext::processReplyAccess () | |
1749 | { | |
7dc5f514 | 1750 | assert(reply); |
1751 | buildMaxBodySize(reply); | |
62e76326 | 1752 | |
7dc5f514 | 1753 | if (http->isReplyBodyTooLarge(reply->content_length)) { |
62e76326 | 1754 | ErrorState *err = |
1755 | clientBuildError(ERR_TOO_BIG, HTTP_FORBIDDEN, NULL, | |
a2ac85d9 | 1756 | http->getConn().getRaw() != NULL ? &http->getConn()->peer.sin_addr : &no_addr, |
62e76326 | 1757 | http->request); |
86a2f789 | 1758 | removeClientStoreReference(&sc, http); |
0655fa4d | 1759 | startError(err); |
7dc5f514 | 1760 | HTTPMSGUNLOCK(reply); |
62e76326 | 1761 | return; |
1762 | } | |
1763 | ||
7dc5f514 | 1764 | headers_sz = reply->hdr_sz; |
62e76326 | 1765 | ACLChecklist *replyChecklist; |
1766 | replyChecklist = clientAclChecklistCreate(Config.accessList.reply, http); | |
7dc5f514 | 1767 | replyChecklist->reply = HTTPMSGLOCK(reply); |
0655fa4d | 1768 | replyChecklist->nonBlockingCheck(ProcessReplyAccessResult, this); |
4993f571 | 1769 | } |
1770 | ||
1771 | void | |
0655fa4d | 1772 | clientReplyContext::ProcessReplyAccessResult (int rv, void *voidMe) |
4993f571 | 1773 | { |
1774 | clientReplyContext *me = static_cast<clientReplyContext *>(voidMe); | |
0655fa4d | 1775 | me->processReplyAccessResult(rv); |
4993f571 | 1776 | } |
1777 | ||
1778 | void | |
0655fa4d | 1779 | clientReplyContext::processReplyAccessResult(bool accessAllowed) |
4993f571 | 1780 | { |
62e76326 | 1781 | debug(88, 2) ("The reply for %s %s is %s, because it matched '%s'\n", |
1782 | RequestMethodStr[http->request->method], http->uri, | |
1783 | accessAllowed ? "ALLOWED" : "DENIED", | |
1784 | AclMatchedName ? AclMatchedName : "NO ACL's"); | |
62e76326 | 1785 | |
7dc5f514 | 1786 | if (!accessAllowed && reply->sline.status != HTTP_FORBIDDEN |
1787 | && !alwaysAllowResponse(reply->sline.status)) { | |
62e76326 | 1788 | /* the if above is slightly broken, but there is no way |
1789 | * to tell if this is a squid generated error page, or one from | |
1790 | * upstream at this point. */ | |
1791 | ErrorState *err; | |
0185bd6f | 1792 | err_type page_id; |
1793 | page_id = aclGetDenyInfoPage(&Config.denyInfoList, AclMatchedName); | |
1794 | ||
1795 | if (page_id == ERR_NONE) | |
1796 | page_id = ERR_ACCESS_DENIED; | |
1797 | ||
62e76326 | 1798 | err = |
0185bd6f | 1799 | clientBuildError(page_id, HTTP_FORBIDDEN, NULL, |
a2ac85d9 | 1800 | http->getConn().getRaw() != NULL ? &http->getConn()->peer.sin_addr : &no_addr, |
62e76326 | 1801 | http->request); |
0185bd6f | 1802 | |
86a2f789 | 1803 | removeClientStoreReference(&sc, http); |
0185bd6f | 1804 | |
0655fa4d | 1805 | startError(err); |
0185bd6f | 1806 | |
7dc5f514 | 1807 | HTTPMSGUNLOCK(reply); |
0185bd6f | 1808 | |
c2cf9bea | 1809 | http->logType = LOG_TCP_DENIED_REPLY; |
0185bd6f | 1810 | |
62e76326 | 1811 | return; |
1812 | } | |
1813 | ||
0976f8db | 1814 | /* Ok, the reply is allowed, */ |
1815 | http->loggingEntry(http->storeEntry()); | |
1816 | ||
7dc5f514 | 1817 | ssize_t body_size = reqofs - reply->hdr_sz; |
0976f8db | 1818 | |
62e76326 | 1819 | assert(body_size >= 0); |
0976f8db | 1820 | |
62e76326 | 1821 | debug(88,3) |
0655fa4d | 1822 | ("clientReplyContext::sendMoreData: Appending %d bytes after %d bytes of headers\n", |
7dc5f514 | 1823 | (int) body_size, reply->hdr_sz); |
0976f8db | 1824 | |
43ae1d95 | 1825 | #if ESI |
62e76326 | 1826 | |
7dc5f514 | 1827 | if (http->flags.accel && reply->sline.status != HTTP_FORBIDDEN && |
1828 | !alwaysAllowResponse(reply->sline.status) && | |
1829 | esiEnableProcessing(reply)) { | |
43ae1d95 | 1830 | debug(88, 2) ("Enabling ESI processing for %s\n", http->uri); |
1831 | clientStreamInsertHead(&http->client_stream, esiStreamRead, | |
1832 | esiProcessStream, esiStreamDetach, esiStreamStatus, NULL); | |
1833 | } | |
1834 | ||
1835 | #endif | |
5ef38a13 | 1836 | |
1837 | #if ICAP_CLIENT_RESPMOD_POSTCACHE | |
1838 | ||
1839 | debug(88, 0) ("Enabling ICAP processing for %s\n", http->uri); | |
1840 | ||
1841 | clientStreamInsertHead(&http->client_stream, icapclientStreamRead, | |
1842 | icapclientProcessStream, | |
1843 | icapclientStreamDetach, | |
1844 | icapclientStreamStatus, | |
1845 | NULL); | |
1846 | ||
1847 | #endif | |
1848 | ||
62e76326 | 1849 | if (http->request->method == METHOD_HEAD) { |
1850 | /* do not forward body for HEAD replies */ | |
1851 | body_size = 0; | |
1852 | http->flags.done_copying = 1; | |
1853 | flags.complete = 1; | |
1854 | } | |
1855 | ||
1856 | assert (!flags.headersSent); | |
1857 | flags.headersSent = true; | |
1858 | ||
1859 | StoreIOBuffer tempBuffer; | |
1860 | char *buf = next()->readBuffer.data; | |
7dc5f514 | 1861 | char *body_buf = buf + reply->hdr_sz; |
62e76326 | 1862 | |
49ea0125 | 1863 | //Server side may disable ranges under some circumstances. |
1864 | ||
1865 | if ((!http->request->range)) | |
1866 | next()->readBuffer.offset = 0; | |
1867 | ||
62e76326 | 1868 | if (next()->readBuffer.offset != 0) { |
1869 | if (next()->readBuffer.offset > body_size) { | |
1870 | /* Can't use any of the body we recieved. send nothing */ | |
1871 | tempBuffer.length = 0; | |
1872 | tempBuffer.data = NULL; | |
1873 | } else { | |
1874 | tempBuffer.length = body_size - next()->readBuffer.offset; | |
1875 | tempBuffer.data = body_buf + next()->readBuffer.offset; | |
1876 | } | |
1877 | } else { | |
1878 | tempBuffer.length = body_size; | |
1879 | tempBuffer.data = body_buf; | |
1880 | } | |
1881 | ||
0655fa4d | 1882 | /* TODO??: move the data in the buffer back by the request header size */ |
62e76326 | 1883 | clientStreamCallback((clientStreamNode *)http->client_stream.head->data, |
7dc5f514 | 1884 | http, reply, tempBuffer); |
62e76326 | 1885 | |
1886 | return; | |
4993f571 | 1887 | } |
1888 | ||
528b2c61 | 1889 | void |
1890 | clientReplyContext::sendMoreData (StoreIOBuffer result) | |
1891 | { | |
50c09fc4 | 1892 | if (deleting) |
1893 | return; | |
1894 | ||
86a2f789 | 1895 | StoreEntry *entry = http->storeEntry(); |
50c09fc4 | 1896 | |
a2ac85d9 | 1897 | ConnStateData::Pointer conn = http->getConn(); |
50c09fc4 | 1898 | |
a2ac85d9 | 1899 | int fd = conn.getRaw() != NULL ? conn->fd : -1; |
50c09fc4 | 1900 | |
528b2c61 | 1901 | char *buf = next()->readBuffer.data; |
50c09fc4 | 1902 | |
c8be6d7b | 1903 | char *body_buf = buf; |
edce4d98 | 1904 | |
62e76326 | 1905 | /* This is always valid until we get the headers as metadata from |
528b2c61 | 1906 | * storeClientCopy. |
1907 | * Then it becomes reqofs == next->readBuffer.offset() | |
af29fa86 | 1908 | */ |
528b2c61 | 1909 | assert(reqofs == 0 || flags.storelogiccomplete); |
af29fa86 | 1910 | |
528b2c61 | 1911 | if (flags.headersSent && buf != result.data) { |
62e76326 | 1912 | /* we've got to copy some data */ |
1913 | assert(result.length <= next()->readBuffer.length); | |
1914 | xmemcpy(buf, result.data, result.length); | |
1915 | body_buf = buf; | |
528b2c61 | 1916 | } else if (!flags.headersSent && |
62e76326 | 1917 | buf + reqofs !=result.data) { |
1918 | /* we've got to copy some data */ | |
1919 | assert(result.length + reqofs <= next()->readBuffer.length); | |
1920 | xmemcpy(buf + reqofs, result.data, result.length); | |
1921 | body_buf = buf; | |
edce4d98 | 1922 | } |
62e76326 | 1923 | |
edce4d98 | 1924 | /* We've got the final data to start pushing... */ |
528b2c61 | 1925 | flags.storelogiccomplete = 1; |
edce4d98 | 1926 | |
4993f571 | 1927 | reqofs += result.length; |
1928 | ||
1929 | assert(reqofs <= HTTP_REQBUF_SZ || flags.headersSent); | |
62e76326 | 1930 | |
edce4d98 | 1931 | assert(http->request != NULL); |
62e76326 | 1932 | |
edce4d98 | 1933 | /* ESI TODO: remove this assert once everything is stable */ |
1934 | assert(http->client_stream.head->data | |
62e76326 | 1935 | && cbdataReferenceValid(http->client_stream.head->data)); |
528b2c61 | 1936 | |
1937 | makeThisHead(); | |
62e76326 | 1938 | |
0655fa4d | 1939 | debug(88, 5) ("clientReplyContext::sendMoreData: %s, %d bytes (%u new bytes)\n", |
62e76326 | 1940 | http->uri, (int) reqofs, (unsigned int)result.length); |
1941 | ||
0655fa4d | 1942 | debug(88, 5) ("clientReplyContext::sendMoreData: FD %d '%s', out.offset=%ld \n", |
62e76326 | 1943 | fd, storeUrl(entry), (long int) http->out.offset); |
528b2c61 | 1944 | |
edce4d98 | 1945 | /* update size of the request */ |
4993f571 | 1946 | reqsize = reqofs; |
62e76326 | 1947 | |
e429f975 | 1948 | if (http->request->flags.resetTCP()) { |
62e76326 | 1949 | /* yuck. FIXME: move to client_side.c */ |
1950 | ||
1951 | if (fd != -1) | |
1952 | comm_reset_close(fd); | |
1953 | ||
1954 | return; | |
528b2c61 | 1955 | } |
62e76326 | 1956 | |
4993f571 | 1957 | if (errorInStream(result, reqofs)) { |
62e76326 | 1958 | sendStreamError(result); |
1959 | return; | |
edce4d98 | 1960 | } |
528b2c61 | 1961 | |
1962 | if (flags.headersSent) { | |
62e76326 | 1963 | pushStreamData (result, buf); |
1964 | return; | |
edce4d98 | 1965 | } |
62e76326 | 1966 | |
0655fa4d | 1967 | buildReply(buf, reqofs); |
4993f571 | 1968 | ssize_t body_size = reqofs; |
62e76326 | 1969 | |
7dc5f514 | 1970 | if (reply) { |
21b92762 | 1971 | |
1972 | /* handle headers */ | |
1973 | ||
1974 | if (Config.onoff.log_mime_hdrs) { | |
1975 | size_t k; | |
1976 | ||
1977 | if ((k = headersEnd(buf, reqofs))) { | |
1978 | safe_free(http->al.headers.reply); | |
1979 | http->al.headers.reply = (char *)xcalloc(k + 1, 1); | |
1980 | xstrncpy(http->al.headers.reply, buf, k); | |
1981 | } | |
1982 | } | |
1983 | ||
62e76326 | 1984 | holdingBuffer = result; |
7dc5f514 | 1985 | processReplyAccess(); |
62e76326 | 1986 | return; |
43ae1d95 | 1987 | |
4993f571 | 1988 | } else if (reqofs < HTTP_REQBUF_SZ && entry->store_status == STORE_PENDING) { |
0655fa4d | 1989 | waitForMoreData(); |
62e76326 | 1990 | return; |
528b2c61 | 1991 | } else if (http->request->method == METHOD_HEAD) { |
62e76326 | 1992 | /* |
1993 | * If we are here, then store_status == STORE_OK and it | |
1994 | * seems we have a HEAD repsponse which is missing the | |
1995 | * empty end-of-headers line (home.mira.net, phttpd/0.99.72 | |
0655fa4d | 1996 | * does this). Because buildReply() fails we just |
62e76326 | 1997 | * call this reply a body, set the done_copying flag and |
1998 | * continue... | |
1999 | */ | |
2000 | /* RBC: Note that this is seriously broken, as we *need* the | |
2001 | * metadata to allow further client modules to work. As such | |
2002 | * webservers are seriously broken, this is probably not | |
2003 | * going to get fixed.. perhapos we should remove it? | |
2004 | */ | |
2005 | debug (88,0)("Broken head response - probably phttpd/0.99.72\n"); | |
2006 | http->flags.done_copying = 1; | |
2007 | flags.complete = 1; | |
2008 | /* | |
2009 | * And as this is a malformed HTTP reply we cannot keep | |
2010 | * the connection persistent | |
2011 | */ | |
2012 | http->request->flags.proxy_keepalive = 0; | |
2013 | ||
62e76326 | 2014 | assert(body_buf && body_size); |
0655fa4d | 2015 | StoreIOBuffer tempBuffer (body_size, 0 ,body_buf); |
62e76326 | 2016 | clientStreamCallback((clientStreamNode *)http->client_stream.head->data, |
2017 | http, NULL, tempBuffer); | |
528b2c61 | 2018 | } else { |
62e76326 | 2019 | debug (88,0)("clientReplyContext::sendMoreData: Unable to parse reply headers within a single HTTP_REQBUF_SZ length buffer\n"); |
2020 | StoreIOBuffer tempBuffer; | |
2021 | tempBuffer.flags.error = 1; | |
0655fa4d | 2022 | /* XXX FIXME: make an html error page here */ |
62e76326 | 2023 | sendStreamError(tempBuffer); |
2024 | return; | |
edce4d98 | 2025 | } |
62e76326 | 2026 | |
528b2c61 | 2027 | fatal ("clientReplyContext::sendMoreData: Unreachable code reached \n"); |
edce4d98 | 2028 | } |
2029 | ||
62e76326 | 2030 | |
edce4d98 | 2031 | |
2032 | /* Using this breaks the client layering just a little! | |
2033 | */ | |
0655fa4d | 2034 | void |
2035 | clientReplyContext::createStoreEntry(method_t m, request_flags flags) | |
edce4d98 | 2036 | { |
0655fa4d | 2037 | assert(http != NULL); |
edce4d98 | 2038 | /* |
2039 | * For erroneous requests, we might not have a h->request, | |
2040 | * so make a fake one. | |
2041 | */ | |
62e76326 | 2042 | |
0655fa4d | 2043 | if (http->request == NULL) |
6dd9f4bd | 2044 | http->request = HTTPMSGLOCK(new HttpRequest(m, PROTO_NONE, null_string)); |
62e76326 | 2045 | |
0655fa4d | 2046 | StoreEntry *e = storeCreateEntry(http->uri, http->log_uri, flags, m); |
62e76326 | 2047 | |
0655fa4d | 2048 | sc = storeClientListAdd(e, this); |
62e76326 | 2049 | |
edce4d98 | 2050 | #if DELAY_POOLS |
62e76326 | 2051 | |
0655fa4d | 2052 | sc->setDelayId(DelayId::DelayClient(http)); |
62e76326 | 2053 | |
edce4d98 | 2054 | #endif |
62e76326 | 2055 | |
0655fa4d | 2056 | reqofs = 0; |
62e76326 | 2057 | |
0655fa4d | 2058 | reqsize = 0; |
62e76326 | 2059 | |
edce4d98 | 2060 | /* I don't think this is actually needed! -- adrian */ |
0655fa4d | 2061 | /* http->reqbuf = http->norm_reqbuf; */ |
2062 | // assert(http->reqbuf == http->norm_reqbuf); | |
edce4d98 | 2063 | /* The next line is illegal because we don't know if the client stream |
2064 | * buffers have been set up | |
2065 | */ | |
0655fa4d | 2066 | // storeClientCopy(http->sc, e, 0, HTTP_REQBUF_SZ, http->reqbuf, |
2067 | // SendMoreData, this); | |
edce4d98 | 2068 | /* So, we mark the store logic as complete */ |
0655fa4d | 2069 | this->flags.storelogiccomplete = 1; |
62e76326 | 2070 | |
edce4d98 | 2071 | /* and get the caller to request a read, from whereever they are */ |
62e76326 | 2072 | /* NOTE: after ANY data flows down the pipe, even one step, |
edce4d98 | 2073 | * this function CAN NOT be used to manage errors |
2074 | */ | |
86a2f789 | 2075 | http->storeEntry(e); |
edce4d98 | 2076 | } |
2077 | ||
2078 | ErrorState * | |
2079 | clientBuildError(err_type page_id, http_status status, char const *url, | |
62e76326 | 2080 | |
ddfcbc22 | 2081 | struct IN_ADDR * src_addr, HttpRequest * request) |
edce4d98 | 2082 | { |
2083 | ErrorState *err = errorCon(page_id, status); | |
2084 | err->src_addr = *src_addr; | |
62e76326 | 2085 | |
edce4d98 | 2086 | if (url) |
62e76326 | 2087 | err->url = xstrdup(url); |
2088 | ||
edce4d98 | 2089 | if (request) |
6dd9f4bd | 2090 | err->request = HTTPMSGLOCK(request); |
62e76326 | 2091 | |
edce4d98 | 2092 | return err; |
2093 | } |