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edce4d98 | 1 | |
2 | /* | |
f5e45ad8 | 3 | * $Id: client_side_reply.cc,v 1.87 2005/09/14 17:10:38 serassio 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" | |
e6ccf245 | 42 | |
c8be6d7b | 43 | #include "clientStream.h" |
f5691f9c | 44 | #include "AuthUserRequest.h" |
43ae1d95 | 45 | #if ESI |
46 | #include "ESI.h" | |
47 | #endif | |
528b2c61 | 48 | #include "MemObject.h" |
4fb35c3c | 49 | #include "ACLChecklist.h" |
b0dd28ba | 50 | #include "ACL.h" |
b67e2c8c | 51 | #if DELAY_POOLS |
52 | #include "DelayPools.h" | |
53 | #endif | |
a46d2c0e | 54 | #include "client_side.h" |
e6ccf245 | 55 | |
0655fa4d | 56 | CBDATA_CLASS_INIT(clientReplyContext); |
edce4d98 | 57 | |
edce4d98 | 58 | /* Local functions */ |
e6ccf245 | 59 | extern "C" CSS clientReplyStatus; |
edce4d98 | 60 | extern ErrorState *clientBuildError(err_type, http_status, char const *, |
62e76326 | 61 | |
ddfcbc22 | 62 | struct IN_ADDR *, HttpRequest *); |
edce4d98 | 63 | |
edce4d98 | 64 | /* privates */ |
edce4d98 | 65 | |
0655fa4d | 66 | clientReplyContext::~clientReplyContext() |
edce4d98 | 67 | { |
50c09fc4 | 68 | deleting = true; |
69 | /* This may trigger a callback back into SendMoreData as the cbdata | |
70 | * is still valid | |
71 | */ | |
86a2f789 | 72 | removeClientStoreReference(&sc, http); |
edce4d98 | 73 | /* old_entry might still be set if we didn't yet get the reply |
0655fa4d | 74 | * code in HandleIMSReply() */ |
75 | removeStoreReference(&old_sc, &old_entry); | |
76 | safe_free(tempBuffer.data); | |
77 | cbdataReferenceDone(http); | |
edce4d98 | 78 | } |
79 | ||
59a1efb2 | 80 | clientReplyContext::clientReplyContext(ClientHttpRequest *clientContext) : http (cbdataReference(clientContext)), old_entry (NULL), old_sc(NULL), deleting(false) |
0655fa4d | 81 | {} |
edce4d98 | 82 | |
83 | /* create an error in the store awaiting the client side to read it. */ | |
0655fa4d | 84 | /* This may be better placed in the clientStream logic, but it has not been |
85 | * relocated there yet | |
86 | */ | |
edce4d98 | 87 | void |
0655fa4d | 88 | clientReplyContext::setReplyToError( |
89 | err_type err, http_status status, method_t method, char const *uri, | |
62e76326 | 90 | |
ddfcbc22 | 91 | struct IN_ADDR *addr, HttpRequest * failedrequest, char *unparsedrequest, |
0655fa4d | 92 | auth_user_request_t * auth_user_request) |
edce4d98 | 93 | { |
edce4d98 | 94 | ErrorState *errstate = |
62e76326 | 95 | clientBuildError(err, status, uri, addr, failedrequest); |
96 | ||
edce4d98 | 97 | if (unparsedrequest) |
62e76326 | 98 | errstate->request_hdrs = xstrdup(unparsedrequest); |
edce4d98 | 99 | |
0655fa4d | 100 | if (status == HTTP_NOT_IMPLEMENTED && http->request) |
62e76326 | 101 | /* prevent confusion over whether we default to persistent or not */ |
0655fa4d | 102 | http->request->flags.proxy_keepalive = 0; |
62e76326 | 103 | |
0655fa4d | 104 | http->al.http.code = errstate->httpStatus; |
edce4d98 | 105 | |
0655fa4d | 106 | createStoreEntry(method, request_flags()); |
62e76326 | 107 | |
108 | if (auth_user_request) | |
109 | { | |
110 | errstate->auth_user_request = auth_user_request; | |
f5691f9c | 111 | |
112 | errstate->auth_user_request->lock() | |
113 | ||
114 | ; | |
edce4d98 | 115 | } |
62e76326 | 116 | |
edce4d98 | 117 | assert(errstate->callback_data == NULL); |
86a2f789 | 118 | errorAppendEntry(http->storeEntry(), errstate); |
edce4d98 | 119 | /* Now the caller reads to get this */ |
120 | } | |
121 | ||
122 | void | |
0655fa4d | 123 | clientReplyContext::removeStoreReference(store_client ** scp, |
124 | StoreEntry ** ep) | |
edce4d98 | 125 | { |
126 | StoreEntry *e; | |
127 | store_client *sc = *scp; | |
62e76326 | 128 | |
edce4d98 | 129 | if ((e = *ep) != NULL) { |
62e76326 | 130 | *ep = NULL; |
0655fa4d | 131 | storeUnregister(sc, e, this); |
62e76326 | 132 | *scp = NULL; |
133 | storeUnlockObject(e); | |
edce4d98 | 134 | } |
135 | } | |
136 | ||
86a2f789 | 137 | void |
138 | clientReplyContext::removeClientStoreReference(store_client **scp, ClientHttpRequest *http) | |
139 | { | |
140 | StoreEntry *reference = http->storeEntry(); | |
141 | removeStoreReference(scp, &reference); | |
142 | http->storeEntry(reference); | |
143 | } | |
144 | ||
e6ccf245 | 145 | void * |
a695955b | 146 | clientReplyContext::operator new (size_t byteCount) |
e6ccf245 | 147 | { |
148 | /* derived classes with different sizes must implement their own new */ | |
149 | assert (byteCount == sizeof (clientReplyContext)); | |
0655fa4d | 150 | CBDATA_INIT_TYPE(clientReplyContext); |
e6ccf245 | 151 | return cbdataAlloc(clientReplyContext); |
152 | } | |
153 | ||
154 | void | |
155 | clientReplyContext::operator delete (void *address) | |
156 | { | |
a50bfe93 | 157 | clientReplyContext * tmp = (clientReplyContext *)address; |
158 | cbdataFree (tmp); | |
e6ccf245 | 159 | } |
160 | ||
edce4d98 | 161 | void |
0655fa4d | 162 | clientReplyContext::saveState() |
edce4d98 | 163 | { |
e6ccf245 | 164 | assert(old_sc == NULL); |
61fb2d9a | 165 | debug(88, 3)("clientReplyContext::saveState: saving store context\n"); |
86a2f789 | 166 | old_entry = http->storeEntry(); |
e6ccf245 | 167 | old_sc = sc; |
168 | old_reqsize = reqsize; | |
169 | tempBuffer.offset = reqofs; | |
edce4d98 | 170 | /* Prevent accessing the now saved entries */ |
86a2f789 | 171 | http->storeEntry(NULL); |
e6ccf245 | 172 | sc = NULL; |
173 | reqsize = 0; | |
174 | reqofs = 0; | |
edce4d98 | 175 | } |
176 | ||
177 | void | |
0655fa4d | 178 | clientReplyContext::restoreState() |
edce4d98 | 179 | { |
e6ccf245 | 180 | assert(old_sc != NULL); |
61fb2d9a | 181 | debug(88, 3)("clientReplyContext::restoreState: Restoring store context\n"); |
86a2f789 | 182 | removeClientStoreReference(&sc, http); |
183 | http->storeEntry(old_entry); | |
e6ccf245 | 184 | sc = old_sc; |
185 | reqsize = old_reqsize; | |
186 | reqofs = tempBuffer.offset; | |
edce4d98 | 187 | /* Prevent accessed the old saved entries */ |
0655fa4d | 188 | old_entry = NULL; |
e6ccf245 | 189 | old_sc = NULL; |
190 | old_reqsize = 0; | |
191 | tempBuffer.offset = 0; | |
c8be6d7b | 192 | } |
193 | ||
194 | void | |
0655fa4d | 195 | clientReplyContext::startError(ErrorState * err) |
c8be6d7b | 196 | { |
0655fa4d | 197 | createStoreEntry(http->request->method, request_flags()); |
198 | triggerInitialStoreRead(); | |
86a2f789 | 199 | errorAppendEntry(http->storeEntry(), err); |
edce4d98 | 200 | } |
201 | ||
e6ccf245 | 202 | clientStreamNode * |
528b2c61 | 203 | clientReplyContext::getNextNode() const |
e6ccf245 | 204 | { |
62e76326 | 205 | return (clientStreamNode *)ourNode->node.next->data; |
e6ccf245 | 206 | } |
207 | ||
62e76326 | 208 | /* This function is wrong - the client parameters don't include the |
528b2c61 | 209 | * header offset |
210 | */ | |
c8be6d7b | 211 | void |
0655fa4d | 212 | clientReplyContext::triggerInitialStoreRead() |
c8be6d7b | 213 | { |
0655fa4d | 214 | /* when confident, 0 becomes reqofs, and then this factors into |
528b2c61 | 215 | * startSendProcess |
216 | */ | |
0655fa4d | 217 | assert(reqofs == 0); |
dd272b8e | 218 | StoreIOBuffer tempBuffer (next()->readBuffer.length, 0, next()->readBuffer.data); |
86a2f789 | 219 | storeClientCopy(sc, http->storeEntry(), tempBuffer, SendMoreData, this); |
c8be6d7b | 220 | } |
edce4d98 | 221 | |
222 | /* there is an expired entry in the store. | |
223 | * setup a temporary buffer area and perform an IMS to the origin | |
224 | */ | |
0655fa4d | 225 | void |
226 | clientReplyContext::processExpired() | |
edce4d98 | 227 | { |
edce4d98 | 228 | char *url = http->uri; |
229 | StoreEntry *entry = NULL; | |
0655fa4d | 230 | debug(88, 3)("clientReplyContext::processExpired: '%s'", http->uri); |
86a2f789 | 231 | assert(http->storeEntry()->lastmod >= 0); |
edce4d98 | 232 | /* |
233 | * check if we are allowed to contact other servers | |
234 | * @?@: Instead of a 504 (Gateway Timeout) reply, we may want to return | |
235 | * a stale entry *if* it matches client requirements | |
236 | */ | |
62e76326 | 237 | |
0655fa4d | 238 | if (http->onlyIfCached()) { |
239 | processOnlyIfCachedMiss(); | |
62e76326 | 240 | return; |
edce4d98 | 241 | } |
62e76326 | 242 | |
edce4d98 | 243 | http->request->flags.refresh = 1; |
244 | #if STORE_CLIENT_LIST_DEBUG | |
c8be6d7b | 245 | /* Prevent a race with the store client memory free routines |
edce4d98 | 246 | */ |
0655fa4d | 247 | assert(storeClientIsThisAClient(sc, this)); |
edce4d98 | 248 | #endif |
249 | /* Prepare to make a new temporary request */ | |
0655fa4d | 250 | saveState(); |
edce4d98 | 251 | entry = storeCreateEntry(url, |
62e76326 | 252 | http->log_uri, http->request->flags, http->request->method); |
edce4d98 | 253 | /* NOTE, don't call storeLockObject(), storeCreateEntry() does it */ |
0655fa4d | 254 | sc = storeClientListAdd(entry, this); |
edce4d98 | 255 | #if DELAY_POOLS |
256 | /* delay_id is already set on original store client */ | |
0655fa4d | 257 | sc->setDelayId(DelayId::DelayClient(http)); |
edce4d98 | 258 | #endif |
62e76326 | 259 | |
0655fa4d | 260 | http->request->lastmod = old_entry->lastmod; |
261 | debug(88, 5)("clientReplyContext::processExpired : lastmod %ld", | |
62e76326 | 262 | (long int) entry->lastmod); |
86a2f789 | 263 | http->storeEntry(entry); |
c8be6d7b | 264 | assert(http->out.offset == 0); |
a2ac85d9 | 265 | fwdStart(http->getConn().getRaw() != NULL ? http->getConn()->fd : -1, http->storeEntry(), http->request); |
edce4d98 | 266 | /* Register with storage manager to receive updates when data comes in. */ |
62e76326 | 267 | |
edce4d98 | 268 | if (EBIT_TEST(entry->flags, ENTRY_ABORTED)) |
0655fa4d | 269 | debug(88, 0) ("clientReplyContext::processExpired: Found ENTRY_ABORTED object"); |
62e76326 | 270 | |
c8be6d7b | 271 | { |
62e76326 | 272 | /* start counting the length from 0 */ |
0655fa4d | 273 | StoreIOBuffer tempBuffer(HTTP_REQBUF_SZ, 0, tempbuf); |
274 | storeClientCopy(sc, entry, tempBuffer, HandleIMSReply, this); | |
edce4d98 | 275 | } |
276 | } | |
277 | ||
0655fa4d | 278 | bool |
279 | clientReplyContext::clientGetsOldEntry()const | |
edce4d98 | 280 | { |
86a2f789 | 281 | const http_status status = http->storeEntry()->getReply()->sline.status; |
62e76326 | 282 | |
edce4d98 | 283 | if (0 == status) { |
62e76326 | 284 | debug(88, 5) ("clientGetsOldEntry: YES, broken HTTP reply\n"); |
0655fa4d | 285 | return true; |
edce4d98 | 286 | } |
62e76326 | 287 | |
edce4d98 | 288 | /* If the reply is a failure then send the old object as a last |
289 | * resort */ | |
290 | if (status >= 500 && status < 600) { | |
62e76326 | 291 | debug(88, 3) ("clientGetsOldEntry: YES, failure reply=%d\n", status); |
0655fa4d | 292 | return true; |
edce4d98 | 293 | } |
62e76326 | 294 | |
edce4d98 | 295 | /* If the reply is anything but "Not Modified" then |
296 | * we must forward it to the client */ | |
297 | if (HTTP_NOT_MODIFIED != status) { | |
62e76326 | 298 | debug(88, 5) ("clientGetsOldEntry: NO, reply=%d\n", status); |
0655fa4d | 299 | return false; |
edce4d98 | 300 | } |
62e76326 | 301 | |
1ef68325 | 302 | /* If the client did not send IMS in the request, then it |
303 | * must get the old object, not this "Not Modified" reply | |
304 | * REGARDLESS of validation */ | |
0655fa4d | 305 | if (!http->request->flags.ims) { |
62e76326 | 306 | debug(88, 5) ("clientGetsOldEntry: YES, no client IMS\n"); |
0655fa4d | 307 | return true; |
1ef68325 | 308 | } |
62e76326 | 309 | |
528b2c61 | 310 | /* If key metadata in the reply are not consistent with the |
311 | * old entry, we must use the new reply. | |
312 | * Note: this means that the server is sending garbage replies | |
313 | * in that it has sent an IMS that is incompatible with our request!? | |
314 | */ | |
315 | /* This is a duplicate call through the HandleIMS code path. | |
316 | * Can we guarantee we don't need it elsewhere? | |
317 | */ | |
86a2f789 | 318 | if (!httpReplyValidatorsMatch(http->storeEntry()->getReply(), |
62e76326 | 319 | old_entry->getReply())) { |
320 | debug(88, 5) ("clientGetsOldEntry: NO, Old object has been invalidated" | |
321 | "by the new one\n"); | |
0655fa4d | 322 | return false; |
528b2c61 | 323 | } |
62e76326 | 324 | |
edce4d98 | 325 | /* If the client IMS time is prior to the entry LASTMOD time we |
326 | * need to send the old object */ | |
0655fa4d | 327 | if (old_entry->modifiedSince(http->request)) { |
62e76326 | 328 | debug(88, 5) ("clientGetsOldEntry: YES, modified since %ld\n", |
0655fa4d | 329 | (long int) http->request->ims); |
330 | return true; | |
edce4d98 | 331 | } |
62e76326 | 332 | |
edce4d98 | 333 | debug(88, 5) ("clientGetsOldEntry: NO, new one is fine\n"); |
0655fa4d | 334 | return false; |
edce4d98 | 335 | } |
336 | ||
528b2c61 | 337 | void |
338 | clientReplyContext::sendClientUpstreamResponse() | |
339 | { | |
340 | StoreIOBuffer tempresult; | |
341 | http->logType = LOG_TCP_REFRESH_MISS; | |
0655fa4d | 342 | removeStoreReference(&old_sc, &old_entry); |
528b2c61 | 343 | /* here the data to send is the data we just recieved */ |
344 | tempBuffer.offset = 0; | |
345 | old_reqsize = 0; | |
0655fa4d | 346 | /* sendMoreData tracks the offset as well. |
528b2c61 | 347 | * Force it back to zero */ |
348 | reqofs = 0; | |
86a2f789 | 349 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 350 | /* TODO: provide sendMoreData with the ready parsed reply */ |
528b2c61 | 351 | tempresult.length = reqsize; |
352 | tempresult.data = tempbuf; | |
0655fa4d | 353 | sendMoreData(tempresult); |
528b2c61 | 354 | } |
355 | ||
edce4d98 | 356 | void |
0655fa4d | 357 | clientReplyContext::HandleIMSReply(void *data, StoreIOBuffer result) |
edce4d98 | 358 | { |
e6ccf245 | 359 | clientReplyContext *context = (clientReplyContext *)data; |
0655fa4d | 360 | context->handleIMSReply(result); |
361 | } | |
62e76326 | 362 | |
0655fa4d | 363 | void |
364 | clientReplyContext::sendClientOldEntry() | |
365 | { | |
366 | /* Get the old request back */ | |
367 | restoreState(); | |
368 | /* here the data to send is in the next nodes buffers already */ | |
86a2f789 | 369 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 370 | /* sendMoreData tracks the offset as well. |
371 | * Force it back to zero */ | |
372 | reqofs = 0; | |
373 | StoreIOBuffer tempresult (reqsize, reqofs, next()->readBuffer.data); | |
374 | sendMoreData(tempresult); | |
375 | } | |
62e76326 | 376 | |
0655fa4d | 377 | void |
378 | clientReplyContext::cleanUpAfterIMSCheck() | |
379 | { | |
86a2f789 | 380 | debug(88, 3) ("clientHandleIMSReply: ABORTED '%s'\n", storeUrl(http->storeEntry())); |
0655fa4d | 381 | /* We have an existing entry, but failed to validate it */ |
382 | /* Its okay to send the old one anyway */ | |
383 | http->logType = LOG_TCP_REFRESH_FAIL_HIT; | |
384 | sendClientOldEntry(); | |
385 | } | |
62e76326 | 386 | |
0655fa4d | 387 | void |
388 | clientReplyContext::handlePartialIMSHeaders() | |
389 | { | |
390 | /* more headers needed to decide */ | |
391 | debug(88, 3) ("clientHandleIMSReply: Incomplete headers for '%s'\n", | |
86a2f789 | 392 | storeUrl(http->storeEntry())); |
0655fa4d | 393 | |
394 | if (reqsize >= HTTP_REQBUF_SZ) { | |
395 | /* will not get any bigger than that */ | |
396 | debug(88, 3) | |
397 | ("clientHandleIMSReply: Reply is too large '%s', using old entry\n", | |
86a2f789 | 398 | storeUrl(http->storeEntry())); |
0655fa4d | 399 | /* use old entry, this repeats the code above */ |
62e76326 | 400 | http->logType = LOG_TCP_REFRESH_FAIL_HIT; |
0655fa4d | 401 | sendClientOldEntry(); |
402 | } else { | |
403 | reqofs = reqsize; | |
404 | waitForMoreData(); | |
c8be6d7b | 405 | } |
0655fa4d | 406 | } |
62e76326 | 407 | |
0655fa4d | 408 | void |
409 | clientReplyContext::handleIMSGiveClientUpdatedOldEntry() | |
410 | { | |
411 | /* We initiated the IMS request and the IMS is compatible with | |
412 | * our object. As the client is not expecting | |
413 | * 304, so put the good one back. First, make sure the old entry | |
414 | * headers have been loaded from disk. */ | |
415 | http->logType = LOG_TCP_REFRESH_HIT; | |
416 | ||
86a2f789 | 417 | if (httpReplyValidatorsMatch(http->storeEntry()->getReply(), |
0655fa4d | 418 | old_entry->getReply())) { |
419 | int unlink_request = 0; | |
420 | ||
421 | if (old_entry->mem_obj->request == NULL) { | |
86a2f789 | 422 | old_entry->mem_obj->request = requestLink(http->memObject()->request); |
0655fa4d | 423 | unlink_request = 1; |
62e76326 | 424 | } |
425 | ||
0655fa4d | 426 | /* Don't memcpy() the whole reply structure here. For example, |
427 | * www.thegist.com (Netscape/1.13) returns a content-length for | |
428 | * 304's which seems to be the length of the 304 HEADERS!!! and | |
429 | * not the body they refer to. */ | |
86a2f789 | 430 | httpReplyUpdateOnNotModified((HttpReply *)old_entry->getReply(), http->storeEntry()->getReply()); |
62e76326 | 431 | |
0655fa4d | 432 | storeTimestampsSet(old_entry); |
62e76326 | 433 | |
0655fa4d | 434 | old_entry->timestamp = squid_curtime; |
62e76326 | 435 | |
0655fa4d | 436 | if (unlink_request) { |
437 | requestUnlink(old_entry->mem_obj->request); | |
438 | old_entry->mem_obj->request = NULL; | |
62e76326 | 439 | } |
0655fa4d | 440 | } |
62e76326 | 441 | |
0655fa4d | 442 | sendClientOldEntry(); |
443 | } | |
444 | ||
445 | void | |
446 | clientReplyContext::handleIMSGiveClientNewEntry() | |
447 | { | |
448 | /* The client gets the new entry, | |
449 | * either as a 304 (they initiated the IMS) or | |
450 | * as a full request from the upstream | |
451 | * The new entry is *not* a 304 reply, or | |
452 | * is a 304 that is incompatible with our cached entities. | |
453 | */ | |
62e76326 | 454 | |
0655fa4d | 455 | if (http->request->flags.ims) { |
456 | /* The client asked for a IMS, and can deal | |
457 | * with any reply | |
458 | * XXX TODO: invalidate our object if it's not valid any more. | |
459 | * Send the IMS reply to the client. | |
460 | */ | |
461 | sendClientUpstreamResponse(); | |
86a2f789 | 462 | } else if (httpReplyValidatorsMatch (http->storeEntry()->getReply(), |
0655fa4d | 463 | old_entry->getReply())) { |
464 | /* Our object is usable once updated */ | |
465 | /* the client did not ask for IMS, send the whole object | |
466 | */ | |
467 | /* the client needs to get this reply */ | |
468 | StoreIOBuffer tempresult; | |
469 | http->logType = LOG_TCP_REFRESH_MISS; | |
62e76326 | 470 | |
86a2f789 | 471 | if (HTTP_NOT_MODIFIED == http->storeEntry()->getReply()->sline.status) { |
0655fa4d | 472 | httpReplyUpdateOnNotModified((HttpReply *)old_entry->getReply(), |
86a2f789 | 473 | http->storeEntry()->getReply()); |
0655fa4d | 474 | storeTimestampsSet(old_entry); |
475 | http->logType = LOG_TCP_REFRESH_HIT; | |
476 | } | |
62e76326 | 477 | |
0655fa4d | 478 | removeStoreReference(&old_sc, &old_entry); |
479 | /* here the data to send is the data we just recieved */ | |
480 | tempBuffer.offset = 0; | |
481 | old_reqsize = 0; | |
482 | /* clientSendMoreData tracks the offset as well. | |
483 | * Force it back to zero */ | |
484 | reqofs = 0; | |
86a2f789 | 485 | assert(!EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)); |
0655fa4d | 486 | /* TODO: provide SendMoreData with the ready parsed reply */ |
487 | tempresult.length = reqsize; | |
488 | tempresult.data = tempbuf; | |
489 | sendMoreData(tempresult); | |
490 | } else { | |
491 | /* the client asked for the whole object, and | |
492 | * 1) our object was stale | |
493 | * 2) our internally generated IMS failed to validate | |
494 | * 3) the server sent incompatible headers in it's reply | |
495 | */ | |
496 | http->logType = LOG_TCP_REFRESH_MISS; | |
497 | processMiss(); | |
498 | /* We start over for everything except IMS because: | |
499 | * 1) HEAD requests will go straight through now | |
500 | * 2) GET requests will go straight through now | |
501 | * 3) IMS requests are a corner case. If the server | |
502 | * decided to give us different data, we should give | |
503 | * that to the client, which means returning our IMS request. | |
504 | */ | |
505 | } | |
506 | } | |
62e76326 | 507 | |
0655fa4d | 508 | void |
509 | clientReplyContext::handleIMSReply(StoreIOBuffer result) | |
510 | { | |
045a76ab | 511 | if (deleting) |
512 | return; | |
513 | ||
0655fa4d | 514 | debug(88, 3) ("clientHandleIMSReply: %s, %lu bytes\n", |
86a2f789 | 515 | storeUrl(http->storeEntry()), |
0655fa4d | 516 | (long unsigned) result.length); |
62e76326 | 517 | |
86a2f789 | 518 | if (http->storeEntry() == NULL) |
0655fa4d | 519 | return; |
62e76326 | 520 | |
86a2f789 | 521 | if (result.flags.error && !EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) |
62e76326 | 522 | return; |
62e76326 | 523 | |
0655fa4d | 524 | /* update size of the request */ |
525 | reqsize = result.length + reqofs; | |
62e76326 | 526 | |
86a2f789 | 527 | http_status status = http->storeEntry()->getReply()->sline.status; |
62e76326 | 528 | |
86a2f789 | 529 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) |
0655fa4d | 530 | cleanUpAfterIMSCheck(); |
86a2f789 | 531 | else if (STORE_PENDING == http->storeEntry()->store_status && 0 == status) |
0655fa4d | 532 | handlePartialIMSHeaders(); |
533 | else if (clientGetsOldEntry()) | |
534 | handleIMSGiveClientUpdatedOldEntry(); | |
535 | else | |
536 | handleIMSGiveClientNewEntry(); | |
edce4d98 | 537 | } |
538 | ||
e6ccf245 | 539 | extern "C" CSR clientGetMoreData; |
540 | extern "C" CSD clientReplyDetach; | |
edce4d98 | 541 | |
542 | /* | |
543 | * clientCacheHit should only be called until the HTTP reply headers | |
544 | * have been parsed. Normally this should be a single call, but | |
545 | * it might take more than one. As soon as we have the headers, | |
0655fa4d | 546 | * we hand off to clientSendMoreData, processExpired, or |
547 | * processMiss. | |
edce4d98 | 548 | */ |
549 | void | |
0655fa4d | 550 | clientReplyContext::CacheHit(void *data, StoreIOBuffer result) |
edce4d98 | 551 | { |
e6ccf245 | 552 | clientReplyContext *context = (clientReplyContext *)data; |
0655fa4d | 553 | context->cacheHit (result); |
554 | } | |
555 | ||
556 | void | |
557 | clientReplyContext::cacheHit(StoreIOBuffer result) | |
558 | { | |
045a76ab | 559 | if (deleting) |
560 | return; | |
561 | ||
86a2f789 | 562 | StoreEntry *e = http->storeEntry(); |
045a76ab | 563 | |
190154cf | 564 | HttpRequest *r = http->request; |
045a76ab | 565 | |
c4b7a5a9 | 566 | debug(88, 3) ("clientCacheHit: %s, %ud bytes\n", http->uri, (unsigned int)result.length); |
62e76326 | 567 | |
86a2f789 | 568 | if (http->storeEntry() == NULL) { |
62e76326 | 569 | debug(88, 3) ("clientCacheHit: request aborted\n"); |
570 | return; | |
c8be6d7b | 571 | } else if (result.flags.error) { |
62e76326 | 572 | /* swap in failure */ |
573 | debug(88, 3) ("clientCacheHit: swapin failure for %s\n", http->uri); | |
574 | http->logType = LOG_TCP_SWAPFAIL_MISS; | |
86a2f789 | 575 | removeClientStoreReference(&sc, http); |
0655fa4d | 576 | processMiss(); |
62e76326 | 577 | return; |
edce4d98 | 578 | } |
62e76326 | 579 | |
d3b3ab85 | 580 | if (result.length == 0) { |
62e76326 | 581 | /* the store couldn't get enough data from the file for us to id the |
582 | * object | |
583 | */ | |
584 | /* treat as a miss */ | |
585 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 586 | processMiss(); |
62e76326 | 587 | return; |
d3b3ab85 | 588 | } |
62e76326 | 589 | |
edce4d98 | 590 | assert(!EBIT_TEST(e->flags, ENTRY_ABORTED)); |
591 | /* update size of the request */ | |
0655fa4d | 592 | reqsize = result.length + reqofs; |
62e76326 | 593 | |
528b2c61 | 594 | if (e->getReply()->sline.status == 0) { |
62e76326 | 595 | /* |
596 | * we don't have full reply headers yet; either wait for more or | |
597 | * punt to clientProcessMiss. | |
598 | */ | |
599 | ||
600 | if (e->mem_status == IN_MEMORY || e->store_status == STORE_OK) { | |
0655fa4d | 601 | processMiss(); |
602 | } else if (result.length + reqofs >= HTTP_REQBUF_SZ | |
62e76326 | 603 | && http->out.offset == 0) { |
0655fa4d | 604 | processMiss(); |
62e76326 | 605 | } else { |
62e76326 | 606 | debug(88, 3) ("clientCacheHit: waiting for HTTP reply headers\n"); |
0655fa4d | 607 | reqofs += result.length; |
608 | assert(reqofs <= HTTP_REQBUF_SZ); | |
62e76326 | 609 | /* get the next users' buffer */ |
0655fa4d | 610 | StoreIOBuffer tempBuffer; |
611 | tempBuffer.offset = http->out.offset + reqofs; | |
612 | tempBuffer.length = next()->readBuffer.length - reqofs; | |
613 | tempBuffer.data = next()->readBuffer.data + reqofs; | |
614 | storeClientCopy(sc, e, | |
615 | tempBuffer, CacheHit, this); | |
62e76326 | 616 | } |
617 | ||
618 | return; | |
edce4d98 | 619 | } |
62e76326 | 620 | |
edce4d98 | 621 | /* |
622 | * Got the headers, now grok them | |
623 | */ | |
29b8d8d6 | 624 | assert(http->logType == LOG_TCP_HIT); |
62e76326 | 625 | |
edce4d98 | 626 | switch (varyEvaluateMatch(e, r)) { |
62e76326 | 627 | |
edce4d98 | 628 | case VARY_NONE: |
62e76326 | 629 | /* No variance detected. Continue as normal */ |
630 | break; | |
631 | ||
edce4d98 | 632 | case VARY_MATCH: |
62e76326 | 633 | /* This is the correct entity for this request. Continue */ |
634 | debug(88, 2) ("clientProcessHit: Vary MATCH!\n"); | |
635 | break; | |
636 | ||
edce4d98 | 637 | case VARY_OTHER: |
62e76326 | 638 | /* This is not the correct entity for this request. We need |
639 | * to requery the cache. | |
640 | */ | |
86a2f789 | 641 | removeClientStoreReference(&sc, http); |
62e76326 | 642 | e = NULL; |
643 | /* Note: varyEvalyateMatch updates the request with vary information | |
644 | * so we only get here once. (it also takes care of cancelling loops) | |
645 | */ | |
646 | debug(88, 2) ("clientProcessHit: Vary detected!\n"); | |
0655fa4d | 647 | clientGetMoreData(ourNode, http); |
62e76326 | 648 | return; |
649 | ||
edce4d98 | 650 | case VARY_CANCEL: |
62e76326 | 651 | /* varyEvaluateMatch found a object loop. Process as miss */ |
652 | debug(88, 1) ("clientProcessHit: Vary object loop!\n"); | |
0655fa4d | 653 | processMiss(); |
62e76326 | 654 | return; |
edce4d98 | 655 | } |
62e76326 | 656 | |
edce4d98 | 657 | if (r->method == METHOD_PURGE) { |
86a2f789 | 658 | removeClientStoreReference(&sc, http); |
62e76326 | 659 | e = NULL; |
0655fa4d | 660 | purgeRequest(); |
62e76326 | 661 | return; |
edce4d98 | 662 | } |
62e76326 | 663 | |
36e6655b | 664 | if (storeCheckNegativeHit(e) |
665 | #if HTTP_VIOLATIONS | |
666 | && !r->flags.nocache_hack | |
667 | #endif | |
668 | ) { | |
62e76326 | 669 | http->logType = LOG_TCP_NEGATIVE_HIT; |
0655fa4d | 670 | sendMoreData(result); |
f7cf9b8c | 671 | } else if (!Config.onoff.offline && refreshCheckHTTP(e, r) && !http->flags.internal) { |
62e76326 | 672 | debug(88, 5) ("clientCacheHit: in refreshCheck() block\n"); |
673 | /* | |
674 | * We hold a stale copy; it needs to be validated | |
675 | */ | |
676 | /* | |
677 | * The 'need_validation' flag is used to prevent forwarding | |
678 | * loops between siblings. If our copy of the object is stale, | |
679 | * then we should probably only use parents for the validation | |
680 | * request. Otherwise two siblings could generate a loop if | |
681 | * both have a stale version of the object. | |
682 | */ | |
683 | r->flags.need_validation = 1; | |
684 | ||
685 | if (e->lastmod < 0) { | |
686 | /* | |
687 | * Previous reply didn't have a Last-Modified header, | |
688 | * we cannot revalidate it. | |
689 | */ | |
690 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 691 | processMiss(); |
62e76326 | 692 | } else if (r->flags.nocache) { |
693 | /* | |
694 | * This did not match a refresh pattern that overrides no-cache | |
695 | * we should honour the client no-cache header. | |
696 | */ | |
697 | http->logType = LOG_TCP_CLIENT_REFRESH_MISS; | |
0655fa4d | 698 | processMiss(); |
62e76326 | 699 | } else if (r->protocol == PROTO_HTTP) { |
700 | /* | |
701 | * Object needs to be revalidated | |
702 | * XXX This could apply to FTP as well, if Last-Modified is known. | |
703 | */ | |
704 | http->logType = LOG_TCP_REFRESH_MISS; | |
0655fa4d | 705 | processExpired(); |
62e76326 | 706 | } else { |
707 | /* | |
708 | * We don't know how to re-validate other protocols. Handle | |
709 | * them as if the object has expired. | |
710 | */ | |
711 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 712 | processMiss(); |
62e76326 | 713 | } |
edce4d98 | 714 | } else if (r->flags.ims) { |
62e76326 | 715 | /* |
716 | * Handle If-Modified-Since requests from the client | |
717 | */ | |
718 | ||
719 | if (e->getReply()->sline.status != HTTP_OK) { | |
720 | debug(88, 4) ("clientCacheHit: Reply code %d != 200\n", | |
721 | e->getReply()->sline.status); | |
722 | http->logType = LOG_TCP_MISS; | |
0655fa4d | 723 | processMiss(); |
724 | } else if (e->modifiedSince(http->request)) { | |
62e76326 | 725 | http->logType = LOG_TCP_IMS_HIT; |
0655fa4d | 726 | sendMoreData(result); |
62e76326 | 727 | } else { |
0655fa4d | 728 | time_t const timestamp = e->timestamp; |
62e76326 | 729 | HttpReply *temprep = httpReplyMake304 (e->getReply()); |
730 | http->logType = LOG_TCP_IMS_HIT; | |
86a2f789 | 731 | removeClientStoreReference(&sc, http); |
0655fa4d | 732 | createStoreEntry(http->request->method, |
733 | request_flags()); | |
86a2f789 | 734 | e = http->storeEntry(); |
62e76326 | 735 | /* |
736 | * Copy timestamp from the original entry so the 304 | |
737 | * reply has a meaningful Age: header. | |
738 | */ | |
739 | e->timestamp = timestamp; | |
740 | httpReplySwapOut (temprep, e); | |
741 | e->complete(); | |
742 | /* TODO: why put this in the store and then serialise it and then parse it again. | |
743 | * Simply mark the request complete in our context and | |
744 | * write the reply struct to the client side | |
745 | */ | |
0655fa4d | 746 | triggerInitialStoreRead(); |
62e76326 | 747 | } |
edce4d98 | 748 | } else { |
62e76326 | 749 | /* |
750 | * plain ol' cache hit | |
751 | */ | |
752 | ||
ffdf45f2 | 753 | if (e->store_status != STORE_OK) |
849b826a | 754 | http->logType = LOG_TCP_MISS; |
ffdf45f2 | 755 | else if (e->mem_status == IN_MEMORY) |
62e76326 | 756 | http->logType = LOG_TCP_MEM_HIT; |
757 | else if (Config.onoff.offline) | |
758 | http->logType = LOG_TCP_OFFLINE_HIT; | |
759 | ||
0655fa4d | 760 | sendMoreData(result); |
edce4d98 | 761 | } |
762 | } | |
763 | ||
764 | /* | |
765 | * Prepare to fetch the object as it's a cache miss of some kind. | |
766 | */ | |
767 | void | |
0655fa4d | 768 | clientReplyContext::processMiss() |
edce4d98 | 769 | { |
edce4d98 | 770 | char *url = http->uri; |
190154cf | 771 | HttpRequest *r = http->request; |
edce4d98 | 772 | ErrorState *err = NULL; |
773 | debug(88, 4) ("clientProcessMiss: '%s %s'\n", | |
62e76326 | 774 | RequestMethodStr[r->method], url); |
edce4d98 | 775 | /* |
776 | * We might have a left-over StoreEntry from a failed cache hit | |
777 | * or IMS request. | |
778 | */ | |
62e76326 | 779 | |
86a2f789 | 780 | if (http->storeEntry()) { |
781 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_SPECIAL)) { | |
62e76326 | 782 | debug(88, 0) ("clientProcessMiss: miss on a special object (%s).\n", |
783 | url); | |
784 | debug(88, 0) ("\tlog_type = %s\n", log_tags[http->logType]); | |
86a2f789 | 785 | storeEntryDump(http->storeEntry(), 1); |
62e76326 | 786 | } |
787 | ||
86a2f789 | 788 | removeClientStoreReference(&sc, http); |
edce4d98 | 789 | } |
62e76326 | 790 | |
edce4d98 | 791 | if (r->method == METHOD_PURGE) { |
0655fa4d | 792 | purgeRequest(); |
62e76326 | 793 | return; |
edce4d98 | 794 | } |
62e76326 | 795 | |
0655fa4d | 796 | if (http->onlyIfCached()) { |
797 | processOnlyIfCachedMiss(); | |
62e76326 | 798 | return; |
edce4d98 | 799 | } |
62e76326 | 800 | |
edce4d98 | 801 | /* |
802 | * Deny loops when running in accelerator/transproxy mode. | |
803 | */ | |
804 | if (http->flags.accel && r->flags.loopdetect) { | |
62e76326 | 805 | http->al.http.code = HTTP_FORBIDDEN; |
806 | err = | |
807 | clientBuildError(ERR_ACCESS_DENIED, HTTP_FORBIDDEN, NULL, | |
98242069 | 808 | &http->getConn()->peer.sin_addr, http->request); |
0655fa4d | 809 | createStoreEntry(r->method, request_flags()); |
86a2f789 | 810 | errorAppendEntry(http->storeEntry(), err); |
0655fa4d | 811 | triggerInitialStoreRead(); |
62e76326 | 812 | return; |
edce4d98 | 813 | } else { |
62e76326 | 814 | assert(http->out.offset == 0); |
0655fa4d | 815 | createStoreEntry(r->method, r->flags); |
816 | triggerInitialStoreRead(); | |
62e76326 | 817 | |
818 | if (http->redirect.status) { | |
819 | HttpReply *rep = httpReplyCreate(); | |
edce4d98 | 820 | #if LOG_TCP_REDIRECTS |
62e76326 | 821 | |
822 | http->logType = LOG_TCP_REDIRECT; | |
edce4d98 | 823 | #endif |
62e76326 | 824 | |
86a2f789 | 825 | storeReleaseRequest(http->storeEntry()); |
62e76326 | 826 | httpRedirectReply(rep, http->redirect.status, |
827 | http->redirect.location); | |
86a2f789 | 828 | httpReplySwapOut(rep, http->storeEntry()); |
829 | http->storeEntry()->complete(); | |
62e76326 | 830 | return; |
831 | } | |
832 | ||
833 | if (http->flags.internal) | |
834 | r->protocol = PROTO_INTERNAL; | |
835 | ||
a2ac85d9 | 836 | fwdStart(http->getConn().getRaw() != NULL ? http->getConn()->fd : -1, http->storeEntry(), r); |
edce4d98 | 837 | } |
838 | } | |
839 | ||
840 | /* | |
841 | * client issued a request with an only-if-cached cache-control directive; | |
842 | * we did not find a cached object that can be returned without | |
843 | * contacting other servers; | |
844 | * respond with a 504 (Gateway Timeout) as suggested in [RFC 2068] | |
845 | */ | |
0655fa4d | 846 | void |
847 | clientReplyContext::processOnlyIfCachedMiss() | |
edce4d98 | 848 | { |
edce4d98 | 849 | ErrorState *err = NULL; |
edce4d98 | 850 | debug(88, 4) ("clientProcessOnlyIfCachedMiss: '%s %s'\n", |
0655fa4d | 851 | RequestMethodStr[http->request->method], http->uri); |
edce4d98 | 852 | http->al.http.code = HTTP_GATEWAY_TIMEOUT; |
853 | err = clientBuildError(ERR_ONLY_IF_CACHED_MISS, HTTP_GATEWAY_TIMEOUT, NULL, | |
98242069 | 854 | &http->getConn()->peer.sin_addr, http->request); |
86a2f789 | 855 | removeClientStoreReference(&sc, http); |
0655fa4d | 856 | startError(err); |
edce4d98 | 857 | } |
858 | ||
859 | void | |
e6ccf245 | 860 | clientReplyContext::purgeRequestFindObjectToPurge() |
861 | { | |
862 | /* Try to find a base entry */ | |
863 | http->flags.purging = 1; | |
864 | lookingforstore = 1; | |
3b13a8fd | 865 | StoreEntry::getPublicByRequestMethod(this, http->request, METHOD_GET); |
e6ccf245 | 866 | } |
867 | ||
868 | void | |
3b13a8fd | 869 | clientReplyContext::created(StoreEntry *newEntry) |
e6ccf245 | 870 | { |
871 | if (lookingforstore == 1) | |
62e76326 | 872 | purgeFoundGet(newEntry); |
e6ccf245 | 873 | else if (lookingforstore == 2) |
62e76326 | 874 | purgeFoundHead(newEntry); |
e6ccf245 | 875 | else if (lookingforstore == 3) |
62e76326 | 876 | purgeDoPurgeGet(newEntry); |
e6ccf245 | 877 | else if (lookingforstore == 4) |
62e76326 | 878 | purgeDoPurgeHead(newEntry); |
e6ccf245 | 879 | else if (lookingforstore == 5) |
62e76326 | 880 | identifyFoundObject(newEntry); |
e6ccf245 | 881 | } |
882 | ||
883 | void | |
3b13a8fd | 884 | clientReplyContext::purgeFoundGet(StoreEntry *newEntry) |
e6ccf245 | 885 | { |
886 | if (newEntry->isNull()) { | |
62e76326 | 887 | lookingforstore = 2; |
888 | StoreEntry::getPublicByRequestMethod(this, http->request, METHOD_HEAD); | |
e6ccf245 | 889 | } else |
62e76326 | 890 | purgeFoundObject (newEntry); |
e6ccf245 | 891 | } |
892 | ||
893 | void | |
3b13a8fd | 894 | clientReplyContext::purgeFoundHead(StoreEntry *newEntry) |
e6ccf245 | 895 | { |
896 | if (newEntry->isNull()) | |
62e76326 | 897 | purgeDoMissPurge(); |
e6ccf245 | 898 | else |
62e76326 | 899 | purgeFoundObject (newEntry); |
e6ccf245 | 900 | } |
62e76326 | 901 | |
e6ccf245 | 902 | void |
3b13a8fd | 903 | clientReplyContext::purgeFoundObject(StoreEntry *entry) |
e6ccf245 | 904 | { |
905 | assert (entry && !entry->isNull()); | |
e4b9a2f0 | 906 | |
907 | if (EBIT_TEST(entry->flags, ENTRY_SPECIAL)) { | |
908 | http->logType = LOG_TCP_DENIED; | |
909 | ErrorState *err = | |
910 | clientBuildError(ERR_ACCESS_DENIED, HTTP_FORBIDDEN, NULL, | |
911 | &http->getConn()->peer.sin_addr, http->request); | |
912 | startError(err); | |
913 | return; | |
914 | } | |
915 | ||
62e76326 | 916 | StoreIOBuffer tempBuffer; |
917 | /* Swap in the metadata */ | |
86a2f789 | 918 | http->storeEntry(entry); |
919 | storeLockObject(http->storeEntry()); | |
920 | storeCreateMemObject(http->storeEntry(), http->uri, http->log_uri); | |
921 | http->storeEntry()->mem_obj->method = http->request->method; | |
922 | sc = storeClientListAdd(http->storeEntry(), this); | |
62e76326 | 923 | http->logType = LOG_TCP_HIT; |
924 | reqofs = 0; | |
925 | tempBuffer.offset = http->out.offset; | |
0655fa4d | 926 | tempBuffer.length = next()->readBuffer.length; |
927 | tempBuffer.data = next()->readBuffer.data; | |
86a2f789 | 928 | storeClientCopy(sc, http->storeEntry(), |
0655fa4d | 929 | tempBuffer, CacheHit, this); |
e6ccf245 | 930 | } |
931 | ||
932 | void | |
933 | clientReplyContext::purgeRequest() | |
edce4d98 | 934 | { |
edce4d98 | 935 | debug(88, 3) ("Config2.onoff.enable_purge = %d\n", |
62e76326 | 936 | Config2.onoff.enable_purge); |
937 | ||
edce4d98 | 938 | if (!Config2.onoff.enable_purge) { |
62e76326 | 939 | http->logType = LOG_TCP_DENIED; |
940 | ErrorState *err = | |
941 | clientBuildError(ERR_ACCESS_DENIED, HTTP_FORBIDDEN, NULL, | |
98242069 | 942 | &http->getConn()->peer.sin_addr, http->request); |
0655fa4d | 943 | startError(err); |
62e76326 | 944 | return; |
edce4d98 | 945 | } |
62e76326 | 946 | |
edce4d98 | 947 | /* Release both IP cache */ |
948 | ipcacheInvalidate(http->request->host); | |
949 | ||
e6ccf245 | 950 | if (!http->flags.purging) |
62e76326 | 951 | purgeRequestFindObjectToPurge(); |
e6ccf245 | 952 | else |
62e76326 | 953 | purgeDoMissPurge(); |
e6ccf245 | 954 | } |
955 | ||
956 | void | |
957 | clientReplyContext::purgeDoMissPurge() | |
958 | { | |
29b8d8d6 | 959 | http->logType = LOG_TCP_MISS; |
e6ccf245 | 960 | lookingforstore = 3; |
3b13a8fd | 961 | StoreEntry::getPublicByRequestMethod(this,http->request, METHOD_GET); |
e6ccf245 | 962 | } |
963 | ||
964 | void | |
3b13a8fd | 965 | clientReplyContext::purgeDoPurgeGet(StoreEntry *newEntry) |
e6ccf245 | 966 | { |
967 | assert (newEntry); | |
968 | /* Move to new() when that is created */ | |
969 | purgeStatus = HTTP_NOT_FOUND; | |
970 | ||
971 | if (!newEntry->isNull()) { | |
62e76326 | 972 | /* Release the cached URI */ |
973 | debug(88, 4) ("clientPurgeRequest: GET '%s'\n", storeUrl(newEntry)); | |
974 | storeRelease(newEntry); | |
975 | purgeStatus = HTTP_OK; | |
edce4d98 | 976 | } |
62e76326 | 977 | |
e6ccf245 | 978 | lookingforstore = 4; |
3b13a8fd | 979 | StoreEntry::getPublicByRequestMethod(this, http->request, METHOD_HEAD); |
e6ccf245 | 980 | } |
981 | ||
982 | void | |
3b13a8fd | 983 | clientReplyContext::purgeDoPurgeHead(StoreEntry *newEntry) |
e6ccf245 | 984 | { |
4fc0ac76 | 985 | if (newEntry && !newEntry->isNull()) { |
62e76326 | 986 | debug(88, 4) ("clientPurgeRequest: HEAD '%s'\n", storeUrl(newEntry)); |
987 | storeRelease(newEntry); | |
988 | purgeStatus = HTTP_OK; | |
edce4d98 | 989 | } |
62e76326 | 990 | |
e6ccf245 | 991 | HttpReply *r; |
62e76326 | 992 | |
edce4d98 | 993 | /* And for Vary, release the base URI if none of the headers was included in the request */ |
62e76326 | 994 | |
edce4d98 | 995 | if (http->request->vary_headers |
62e76326 | 996 | && !strstr(http->request->vary_headers, "=")) { |
997 | StoreEntry *entry = storeGetPublic(urlCanonical(http->request), METHOD_GET); | |
998 | ||
999 | if (entry) { | |
1000 | debug(88, 4) ("clientPurgeRequest: Vary GET '%s'\n", | |
1001 | storeUrl(entry)); | |
1002 | storeRelease(entry); | |
1003 | purgeStatus = HTTP_OK; | |
1004 | } | |
1005 | ||
1006 | entry = storeGetPublic(urlCanonical(http->request), METHOD_HEAD); | |
1007 | ||
1008 | if (entry) { | |
1009 | debug(88, 4) ("clientPurgeRequest: Vary HEAD '%s'\n", | |
1010 | storeUrl(entry)); | |
1011 | storeRelease(entry); | |
1012 | purgeStatus = HTTP_OK; | |
1013 | } | |
edce4d98 | 1014 | } |
62e76326 | 1015 | |
edce4d98 | 1016 | /* |
1017 | * Make a new entry to hold the reply to be written | |
1018 | * to the client. | |
1019 | */ | |
528b2c61 | 1020 | /* FIXME: This doesn't need to go through the store. Simply |
1021 | * push down the client chain | |
1022 | */ | |
0655fa4d | 1023 | createStoreEntry(http->request->method, request_flags()); |
62e76326 | 1024 | |
0655fa4d | 1025 | triggerInitialStoreRead(); |
62e76326 | 1026 | |
528b2c61 | 1027 | r = httpReplyCreate(); |
62e76326 | 1028 | |
450e0c10 | 1029 | HttpVersion version(1,0); |
62e76326 | 1030 | |
e6ccf245 | 1031 | httpReplySetHeaders(r, version, purgeStatus, NULL, NULL, 0, 0, -1); |
62e76326 | 1032 | |
86a2f789 | 1033 | httpReplySwapOut(r, http->storeEntry()); |
62e76326 | 1034 | |
86a2f789 | 1035 | http->storeEntry()->complete(); |
edce4d98 | 1036 | } |
1037 | ||
1038 | void | |
0655fa4d | 1039 | clientReplyContext::traceReply(clientStreamNode * node) |
edce4d98 | 1040 | { |
1041 | HttpReply *rep; | |
e6ccf245 | 1042 | clientStreamNode *next = (clientStreamNode *)node->node.next->data; |
528b2c61 | 1043 | StoreIOBuffer tempBuffer; |
0655fa4d | 1044 | assert(http->request->max_forwards == 0); |
1045 | createStoreEntry(http->request->method, request_flags()); | |
1046 | tempBuffer.offset = next->readBuffer.offset + headers_sz; | |
c8be6d7b | 1047 | tempBuffer.length = next->readBuffer.length; |
1048 | tempBuffer.data = next->readBuffer.data; | |
86a2f789 | 1049 | storeClientCopy(sc, http->storeEntry(), |
0655fa4d | 1050 | tempBuffer, SendMoreData, this); |
86a2f789 | 1051 | storeReleaseRequest(http->storeEntry()); |
1052 | storeBuffer(http->storeEntry()); | |
edce4d98 | 1053 | rep = httpReplyCreate(); |
450e0c10 | 1054 | HttpVersion version(1,0); |
edce4d98 | 1055 | httpReplySetHeaders(rep, version, HTTP_OK, NULL, "text/plain", |
0655fa4d | 1056 | httpRequestPrefixLen(http->request), 0, squid_curtime); |
86a2f789 | 1057 | httpReplySwapOut(rep, http->storeEntry()); |
1058 | httpRequestSwapOut(http->request, http->storeEntry()); | |
1059 | http->storeEntry()->complete(); | |
edce4d98 | 1060 | } |
1061 | ||
1062 | #define SENDING_BODY 0 | |
1063 | #define SENDING_HDRSONLY 1 | |
1064 | int | |
0655fa4d | 1065 | clientReplyContext::checkTransferDone() |
edce4d98 | 1066 | { |
86a2f789 | 1067 | StoreEntry *entry = http->storeEntry(); |
62e76326 | 1068 | |
edce4d98 | 1069 | if (entry == NULL) |
62e76326 | 1070 | return 0; |
1071 | ||
1072 | /* | |
edce4d98 | 1073 | * For now, 'done_copying' is used for special cases like |
1074 | * Range and HEAD requests. | |
1075 | */ | |
0655fa4d | 1076 | if (http->flags.done_copying) |
62e76326 | 1077 | return 1; |
1078 | ||
edce4d98 | 1079 | /* |
1080 | * Handle STORE_OK objects. | |
1081 | * objectLen(entry) will be set proprely. | |
1082 | * RC: Does objectLen(entry) include the Headers? | |
0e3be1ea | 1083 | * RC: Yes. |
edce4d98 | 1084 | */ |
1085 | if (entry->store_status == STORE_OK) { | |
0655fa4d | 1086 | return storeOKTransferDone(); |
e39b9382 | 1087 | } else { |
0655fa4d | 1088 | return storeNotOKTransferDone(); |
edce4d98 | 1089 | } |
e39b9382 | 1090 | } |
1091 | ||
1092 | int | |
1093 | clientReplyContext::storeOKTransferDone() const | |
1094 | { | |
86a2f789 | 1095 | if (http->out.offset >= objectLen(http->storeEntry()) - headers_sz) |
62e76326 | 1096 | return 1; |
1097 | ||
e39b9382 | 1098 | return 0; |
1099 | } | |
1100 | ||
1101 | int | |
1102 | clientReplyContext::storeNotOKTransferDone() const | |
1103 | { | |
edce4d98 | 1104 | /* |
1105 | * Now, handle STORE_PENDING objects | |
1106 | */ | |
86a2f789 | 1107 | MemObject *mem = http->storeEntry()->mem_obj; |
edce4d98 | 1108 | assert(mem != NULL); |
1109 | assert(http->request != NULL); | |
0e3be1ea | 1110 | /* mem->reply was wrong because it uses the UPSTREAM header length!!! */ |
0353e724 | 1111 | HttpReply const *reply = mem->getReply(); |
62e76326 | 1112 | |
e39b9382 | 1113 | if (headers_sz == 0) |
62e76326 | 1114 | /* haven't found end of headers yet */ |
1115 | return 0; | |
e39b9382 | 1116 | |
1117 | int sending = SENDING_BODY; | |
62e76326 | 1118 | |
e39b9382 | 1119 | if (reply->sline.status == HTTP_NO_CONTENT || |
62e76326 | 1120 | reply->sline.status == HTTP_NOT_MODIFIED || |
1121 | reply->sline.status < HTTP_OK || | |
1122 | http->request->method == METHOD_HEAD) | |
1123 | sending = SENDING_HDRSONLY; | |
1124 | ||
edce4d98 | 1125 | /* |
1126 | * Figure out how much data we are supposed to send. | |
1127 | * If we are sending a body and we don't have a content-length, | |
1128 | * then we must wait for the object to become STORE_OK. | |
1129 | */ | |
0e3be1ea | 1130 | if (reply->content_length < 0) |
62e76326 | 1131 | return 0; |
e39b9382 | 1132 | |
1133 | size_t expectedLength = http->out.headers_sz + reply->content_length; | |
62e76326 | 1134 | |
e39b9382 | 1135 | if (http->out.size < expectedLength) |
62e76326 | 1136 | return 0; |
edce4d98 | 1137 | else |
62e76326 | 1138 | return 1; |
edce4d98 | 1139 | } |
1140 | ||
1141 | ||
edce4d98 | 1142 | /* A write has completed, what is the next status based on the |
1143 | * canonical request data? | |
1144 | * 1 something is wrong | |
1145 | * 0 nothing is wrong. | |
1146 | * | |
1147 | */ | |
1148 | int | |
59a1efb2 | 1149 | clientHttpRequestStatus(int fd, ClientHttpRequest const *http) |
edce4d98 | 1150 | { |
1151 | #if SIZEOF_SIZE_T == 4 | |
62e76326 | 1152 | |
edce4d98 | 1153 | if (http->out.size > 0x7FFF0000) { |
62e76326 | 1154 | debug(88, 1) ("WARNING: closing FD %d to prevent counter overflow\n", |
1155 | fd); | |
1156 | debug(88, 1) ("\tclient %s\n", | |
a2ac85d9 | 1157 | inet_ntoa(http->getConn().getRaw() != NULL ? http->getConn()->peer.sin_addr : no_addr)); |
62e76326 | 1158 | debug(88, 1) ("\treceived %d bytes\n", (int) http->out.size); |
1159 | debug(88, 1) ("\tURI %s\n", http->log_uri); | |
1160 | return 1; | |
edce4d98 | 1161 | } |
62e76326 | 1162 | |
edce4d98 | 1163 | #endif |
1164 | #if SIZEOF_OFF_T == 4 | |
1165 | if (http->out.offset > 0x7FFF0000) { | |
62e76326 | 1166 | debug(88, 1) ("WARNING: closing FD %d to prevent counter overflow\n", |
1167 | fd); | |
1168 | debug(88, 1) ("\tclient %s\n", | |
a2ac85d9 | 1169 | inet_ntoa(http->getConn().getRaw() != NULL ? http->getConn()->peer.sin_addr : no_addr)); |
62e76326 | 1170 | debug(88, 1) ("\treceived %d bytes (offset %d)\n", (int) http->out.size, |
1171 | (int) http->out.offset); | |
1172 | debug(88, 1) ("\tURI %s\n", http->log_uri); | |
1173 | return 1; | |
edce4d98 | 1174 | } |
62e76326 | 1175 | |
edce4d98 | 1176 | #endif |
1177 | return 0; | |
1178 | } | |
1179 | ||
62e76326 | 1180 | /* Preconditions: |
edce4d98 | 1181 | * *http is a valid structure. |
1182 | * fd is either -1, or an open fd. | |
1183 | * | |
1184 | * TODO: enumify this | |
1185 | * | |
1186 | * This function is used by any http request sink, to determine the status | |
1187 | * of the object. | |
1188 | */ | |
1189 | clientStream_status_t | |
59a1efb2 | 1190 | clientReplyStatus(clientStreamNode * aNode, ClientHttpRequest * http) |
edce4d98 | 1191 | { |
0655fa4d | 1192 | clientReplyContext *context = dynamic_cast<clientReplyContext *>(aNode->data.getRaw()); |
1193 | assert (context); | |
1194 | assert (context->http == http); | |
1195 | return context->replyStatus(); | |
1196 | } | |
1197 | ||
1198 | clientStream_status_t | |
1199 | clientReplyContext::replyStatus() | |
1200 | { | |
edce4d98 | 1201 | int done; |
1202 | /* Here because lower nodes don't need it */ | |
62e76326 | 1203 | |
86a2f789 | 1204 | if (http->storeEntry() == NULL) |
62e76326 | 1205 | return STREAM_FAILED; /* yuck, but what can we do? */ |
1206 | ||
86a2f789 | 1207 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) |
62e76326 | 1208 | /* TODO: Could upstream read errors (result.flags.error) be |
1209 | * lost, and result in undersize requests being considered | |
1210 | * complete. Should we tcp reset such connections ? | |
1211 | */ | |
1212 | return STREAM_FAILED; | |
1213 | ||
0655fa4d | 1214 | if ((done = checkTransferDone()) != 0 || flags.complete) { |
62e76326 | 1215 | debug(88, 5) ("clientReplyStatus: transfer is DONE\n"); |
1216 | /* Ok we're finished, but how? */ | |
1217 | ||
1218 | if (httpReplyBodySize(http->request->method, | |
86a2f789 | 1219 | http->storeEntry()->getReply()) < 0) { |
62e76326 | 1220 | debug(88, 5) ("clientReplyStatus: closing, content_length < 0\n"); |
1221 | return STREAM_FAILED; | |
1222 | } | |
1223 | ||
1224 | if (!done) { | |
1225 | debug(88, 5) ("clientReplyStatus: closing, !done, but read 0 bytes\n"); | |
1226 | return STREAM_FAILED; | |
1227 | } | |
1228 | ||
0655fa4d | 1229 | if (!http->gotEnough()) { |
62e76326 | 1230 | debug(88, 5) ("clientReplyStatus: client didn't get all it expected\n"); |
1231 | return STREAM_UNPLANNED_COMPLETE; | |
1232 | } | |
1233 | ||
1234 | if (http->request->flags.proxy_keepalive) { | |
1235 | debug(88, 5) ("clientReplyStatus: stream complete and can keepalive\n"); | |
1236 | return STREAM_COMPLETE; | |
1237 | } | |
1238 | ||
1239 | debug(88, 5) ("clientReplyStatus: stream was not expected to complete!\n"); | |
1240 | return STREAM_UNPLANNED_COMPLETE; | |
edce4d98 | 1241 | } |
62e76326 | 1242 | |
b51aec66 | 1243 | if (http->isReplyBodyTooLarge(http->out.offset - 4096)) { |
1244 | /* 4096 is a margin for the HTTP headers included in out.offset */ | |
62e76326 | 1245 | debug(88, 5) ("clientReplyStatus: client reply body is too large\n"); |
1246 | return STREAM_FAILED; | |
0e3be1ea | 1247 | } |
62e76326 | 1248 | |
edce4d98 | 1249 | return STREAM_NONE; |
1250 | } | |
1251 | ||
62e76326 | 1252 | /* Responses with no body will not have a content-type header, |
edce4d98 | 1253 | * which breaks the rep_mime_type acl, which |
1254 | * coincidentally, is the most common acl for reply access lists. | |
1255 | * A better long term fix for this is to allow acl matchs on the various | |
1256 | * status codes, and then supply a default ruleset that puts these | |
1257 | * codes before any user defines access entries. That way the user | |
1258 | * can choose to block these responses where appropriate, but won't get | |
1259 | * mysterious breakages. | |
1260 | */ | |
0655fa4d | 1261 | bool |
1262 | clientReplyContext::alwaysAllowResponse(http_status sline) const | |
edce4d98 | 1263 | { |
4ef4b952 | 1264 | bool result; |
1265 | ||
edce4d98 | 1266 | switch (sline) { |
62e76326 | 1267 | |
edce4d98 | 1268 | case HTTP_CONTINUE: |
62e76326 | 1269 | |
edce4d98 | 1270 | case HTTP_SWITCHING_PROTOCOLS: |
62e76326 | 1271 | |
edce4d98 | 1272 | case HTTP_PROCESSING: |
62e76326 | 1273 | |
edce4d98 | 1274 | case HTTP_NO_CONTENT: |
62e76326 | 1275 | |
edce4d98 | 1276 | case HTTP_NOT_MODIFIED: |
4ef4b952 | 1277 | result = true; |
62e76326 | 1278 | break; |
1279 | ||
edce4d98 | 1280 | default: |
4ef4b952 | 1281 | result = false; |
edce4d98 | 1282 | } |
4ef4b952 | 1283 | |
1284 | return result; | |
edce4d98 | 1285 | } |
1286 | ||
528b2c61 | 1287 | void |
0655fa4d | 1288 | clientReplyContext::obeyConnectionHeader() |
528b2c61 | 1289 | { |
0655fa4d | 1290 | HttpHeader *hdr = &holdingReply->header; |
924f73bc | 1291 | hdr->removeConnectionHeaderEntries(); |
528b2c61 | 1292 | } |
1293 | ||
edce4d98 | 1294 | /* |
1295 | * filters out unwanted entries from original reply header | |
1296 | * adds extra entries if we have more info than origin server | |
1297 | * adds Squid specific entries | |
1298 | */ | |
0655fa4d | 1299 | void |
1300 | clientReplyContext::buildReplyHeader() | |
edce4d98 | 1301 | { |
0655fa4d | 1302 | HttpHeader *hdr = &holdingReply->header; |
c8be6d7b | 1303 | int is_hit = logTypeIsATcpHit(http->logType); |
190154cf | 1304 | HttpRequest *request = http->request; |
edce4d98 | 1305 | #if DONT_FILTER_THESE |
1306 | /* but you might want to if you run Squid as an HTTP accelerator */ | |
1307 | /* httpHeaderDelById(hdr, HDR_ACCEPT_RANGES); */ | |
1308 | httpHeaderDelById(hdr, HDR_ETAG); | |
1309 | #endif | |
62e76326 | 1310 | |
edce4d98 | 1311 | httpHeaderDelById(hdr, HDR_PROXY_CONNECTION); |
1312 | /* here: Keep-Alive is a field-name, not a connection directive! */ | |
1313 | httpHeaderDelByName(hdr, "Keep-Alive"); | |
1314 | /* remove Set-Cookie if a hit */ | |
62e76326 | 1315 | |
edce4d98 | 1316 | if (is_hit) |
62e76326 | 1317 | httpHeaderDelById(hdr, HDR_SET_COOKIE); |
1318 | ||
0655fa4d | 1319 | obeyConnectionHeader(); |
62e76326 | 1320 | |
1321 | // if (request->range) | |
0655fa4d | 1322 | // clientBuildRangeHeader(http, holdingReply); |
edce4d98 | 1323 | /* |
1324 | * Add a estimated Age header on cache hits. | |
1325 | */ | |
1326 | if (is_hit) { | |
62e76326 | 1327 | /* |
1328 | * Remove any existing Age header sent by upstream caches | |
1329 | * (note that the existing header is passed along unmodified | |
1330 | * on cache misses) | |
1331 | */ | |
1332 | httpHeaderDelById(hdr, HDR_AGE); | |
1333 | /* | |
1334 | * This adds the calculated object age. Note that the details of the | |
1335 | * age calculation is performed by adjusting the timestamp in | |
1336 | * storeTimestampsSet(), not here. | |
1337 | * | |
1338 | * BROWSER WORKAROUND: IE sometimes hangs when receiving a 0 Age | |
1339 | * header, so don't use it unless there is a age to report. Please | |
1340 | * note that Age is only used to make a conservative estimation of | |
1341 | * the objects age, so a Age: 0 header does not add any useful | |
1342 | * information to the reply in any case. | |
1343 | */ | |
1344 | ||
86a2f789 | 1345 | if (NULL == http->storeEntry()) |
62e76326 | 1346 | (void) 0; |
86a2f789 | 1347 | else if (http->storeEntry()->timestamp < 0) |
62e76326 | 1348 | (void) 0; |
bbe58ab5 | 1349 | |
1350 | if (EBIT_TEST(http->storeEntry()->flags, ENTRY_SPECIAL)) { | |
1351 | httpHeaderDelById(hdr, HDR_DATE); | |
1352 | httpHeaderInsertTime(hdr, HDR_DATE, squid_curtime); | |
1353 | } else if (http->storeEntry()->timestamp < squid_curtime) { | |
62e76326 | 1354 | httpHeaderPutInt(hdr, HDR_AGE, |
86a2f789 | 1355 | squid_curtime - http->storeEntry()->timestamp); |
62e76326 | 1356 | /* Signal old objects. NB: rfc 2616 is not clear, |
1357 | * by implication, on whether we should do this to all | |
1358 | * responses, or only cache hits. | |
1359 | * 14.46 states it ONLY applys for heuristically caclulated | |
1360 | * freshness values, 13.2.4 doesn't specify the same limitation. | |
1361 | * We interpret RFC 2616 under the combination. | |
1362 | */ | |
1363 | /* TODO: if maxage or s-maxage is present, don't do this */ | |
1364 | ||
86a2f789 | 1365 | if (squid_curtime - http->storeEntry()->timestamp >= 86400) { |
62e76326 | 1366 | char tempbuf[512]; |
1367 | snprintf (tempbuf, sizeof(tempbuf), "%s %s %s", | |
1368 | "113", ThisCache, | |
1369 | "This cache hit is still fresh and more than 1 day old"); | |
1370 | httpHeaderPutStr(hdr, HDR_WARNING, tempbuf); | |
1371 | } | |
1372 | } | |
528b2c61 | 1373 | |
edce4d98 | 1374 | } |
62e76326 | 1375 | |
0bd9aa82 | 1376 | /* Filter unproxyable authentication types */ |
ddd31ed3 | 1377 | if (http->logType != LOG_TCP_DENIED && |
62e76326 | 1378 | (httpHeaderHas(hdr, HDR_WWW_AUTHENTICATE) || httpHeaderHas(hdr, HDR_PROXY_AUTHENTICATE))) { |
1379 | HttpHeaderPos pos = HttpHeaderInitPos; | |
1380 | HttpHeaderEntry *e; | |
1381 | ||
1382 | while ((e = httpHeaderGetEntry(hdr, &pos))) { | |
1383 | if (e->id == HDR_WWW_AUTHENTICATE || e->id == HDR_PROXY_AUTHENTICATE) { | |
1384 | const char *value = e->value.buf(); | |
1385 | ||
1386 | if ((strncasecmp(value, "NTLM", 4) == 0 && | |
1387 | (value[4] == '\0' || value[4] == ' ')) | |
1388 | || | |
1389 | (strncasecmp(value, "Negotiate", 9) == 0 && | |
1390 | (value[9] == '\0' || value[9] == ' '))) | |
1391 | httpHeaderDelAt(hdr, pos); | |
1392 | } | |
1393 | } | |
0bd9aa82 | 1394 | } |
62e76326 | 1395 | |
edce4d98 | 1396 | /* Handle authentication headers */ |
1397 | if (request->auth_user_request) | |
0655fa4d | 1398 | authenticateFixHeader(holdingReply, request->auth_user_request, request, |
62e76326 | 1399 | http->flags.accel, 0); |
1400 | ||
edce4d98 | 1401 | /* Append X-Cache */ |
1402 | httpHeaderPutStrf(hdr, HDR_X_CACHE, "%s from %s", | |
62e76326 | 1403 | is_hit ? "HIT" : "MISS", getMyHostname()); |
1404 | ||
edce4d98 | 1405 | #if USE_CACHE_DIGESTS |
1406 | /* Append X-Cache-Lookup: -- temporary hack, to be removed @?@ @?@ */ | |
1407 | httpHeaderPutStrf(hdr, HDR_X_CACHE_LOOKUP, "%s from %s:%d", | |
0655fa4d | 1408 | lookup_type ? lookup_type : "NONE", |
62e76326 | 1409 | getMyHostname(), getMyPort()); |
1410 | ||
edce4d98 | 1411 | #endif |
62e76326 | 1412 | |
0655fa4d | 1413 | if (httpReplyBodySize(request->method, holdingReply) < 0) { |
62e76326 | 1414 | debug(88, |
1415 | 3) | |
1416 | ("clientBuildReplyHeader: can't keep-alive, unknown body size\n"); | |
1417 | request->flags.proxy_keepalive = 0; | |
edce4d98 | 1418 | } |
62e76326 | 1419 | |
f5e45ad8 | 1420 | if (fdUsageHigh()&& !request->flags.must_keepalive) { |
a1ca9253 | 1421 | debug(88, 3) ("clientBuildReplyHeader: Not many unused FDs, can't keep-alive\n"); |
1422 | request->flags.proxy_keepalive = 0; | |
1423 | } | |
1424 | ||
f5e45ad8 | 1425 | if (!Config.onoff.client_pconns && !request->flags.must_keepalive) |
1426 | request->flags.proxy_keepalive = 0; | |
1427 | ||
4dea3fdd | 1428 | /* Append VIA */ |
c8be6d7b | 1429 | { |
62e76326 | 1430 | LOCAL_ARRAY(char, bbuf, MAX_URL + 32); |
1431 | String strVia = httpHeaderGetList(hdr, HDR_VIA); | |
1432 | snprintf(bbuf, sizeof(bbuf), "%d.%d %s", | |
0655fa4d | 1433 | holdingReply->sline.version.major, |
1434 | holdingReply->sline.version.minor, | |
62e76326 | 1435 | ThisCache); |
1436 | strListAdd(&strVia, bbuf, ','); | |
1437 | httpHeaderDelById(hdr, HDR_VIA); | |
1438 | httpHeaderPutStr(hdr, HDR_VIA, strVia.buf()); | |
1439 | strVia.clean(); | |
c8be6d7b | 1440 | } |
edce4d98 | 1441 | /* Signal keep-alive if needed */ |
1442 | httpHeaderPutStr(hdr, | |
62e76326 | 1443 | http->flags.accel ? HDR_CONNECTION : HDR_PROXY_CONNECTION, |
1444 | request->flags.proxy_keepalive ? "keep-alive" : "close"); | |
1445 | ||
edce4d98 | 1446 | #if ADD_X_REQUEST_URI |
1447 | /* | |
1448 | * Knowing the URI of the request is useful when debugging persistent | |
1449 | * connections in a client; we cannot guarantee the order of http headers, | |
1450 | * but X-Request-URI is likely to be the very last header to ease use from a | |
1451 | * debugger [hdr->entries.count-1]. | |
1452 | */ | |
1453 | httpHeaderPutStr(hdr, HDR_X_REQUEST_URI, | |
86a2f789 | 1454 | http->memOjbect()->url ? http->memObject()->url : http->uri); |
62e76326 | 1455 | |
edce4d98 | 1456 | #endif |
62e76326 | 1457 | |
8c01ada0 | 1458 | httpHdrMangleList(hdr, request, ROR_REPLY); |
edce4d98 | 1459 | } |
1460 | ||
1461 | ||
0655fa4d | 1462 | void |
1463 | clientReplyContext::buildReply(const char *buf, size_t size) | |
edce4d98 | 1464 | { |
edce4d98 | 1465 | size_t k = headersEnd(buf, size); |
62e76326 | 1466 | |
0655fa4d | 1467 | if (!k) |
1468 | return; | |
1469 | ||
1470 | holdReply(httpReplyCreate()); | |
1471 | ||
1472 | if (!httpReplyParse(holdingReply, buf, k)) { | |
62e76326 | 1473 | /* parsing failure, get rid of the invalid reply */ |
0655fa4d | 1474 | httpReplyDestroy(holdingReply); |
1475 | holdReply (NULL); | |
62e76326 | 1476 | /* This is wrong. httpReplyDestroy should to the rep |
1477 | * for us, and we can destroy our own range info | |
1478 | */ | |
1479 | ||
0655fa4d | 1480 | if (http->request->range) { |
62e76326 | 1481 | /* this will fail and destroy request->range */ |
0655fa4d | 1482 | // clientBuildRangeHeader(http, holdingReply); |
62e76326 | 1483 | } |
b51aec66 | 1484 | |
979da574 | 1485 | return; |
edce4d98 | 1486 | } |
62e76326 | 1487 | |
0655fa4d | 1488 | /* enforce 1.0 reply version */ |
450e0c10 | 1489 | holdingReply->sline.version = HttpVersion(1,0); |
0655fa4d | 1490 | |
1491 | /* do header conversions */ | |
1492 | buildReplyHeader(); | |
edce4d98 | 1493 | } |
1494 | ||
e6ccf245 | 1495 | void |
1496 | clientReplyContext::identifyStoreObject() | |
edce4d98 | 1497 | { |
190154cf | 1498 | HttpRequest *r = http->request; |
62e76326 | 1499 | |
e6ccf245 | 1500 | if (r->flags.cachable || r->flags.internal) { |
62e76326 | 1501 | lookingforstore = 5; |
1502 | StoreEntry::getPublicByRequest (this, r); | |
e6ccf245 | 1503 | } else |
62e76326 | 1504 | identifyFoundObject (NullStoreEntry::getInstance()); |
e6ccf245 | 1505 | } |
1506 | ||
1507 | void | |
1508 | clientReplyContext::identifyFoundObject(StoreEntry *newEntry) | |
1509 | { | |
1510 | StoreEntry *e = newEntry; | |
190154cf | 1511 | HttpRequest *r = http->request; |
62e76326 | 1512 | |
e6ccf245 | 1513 | if (e->isNull()) { |
86a2f789 | 1514 | http->storeEntry(NULL); |
e6ccf245 | 1515 | } else { |
86a2f789 | 1516 | http->storeEntry(e); |
e6ccf245 | 1517 | } |
62e76326 | 1518 | |
86a2f789 | 1519 | e = http->storeEntry(); |
a12a049a | 1520 | /* Release IP-cache entries on reload */ |
1521 | ||
1522 | if (r->flags.nocache) { | |
1523 | ||
1524 | #if USE_DNSSERVERS | |
62e76326 | 1525 | |
62e76326 | 1526 | ipcacheInvalidate(r->host); |
1527 | ||
a12a049a | 1528 | #else |
1529 | ||
1530 | ipcacheInvalidateNegative(r->host); | |
1531 | ||
1532 | #endif /* USE_DNSSERVERS */ | |
1533 | ||
1534 | } | |
1535 | ||
edce4d98 | 1536 | #if HTTP_VIOLATIONS |
62e76326 | 1537 | |
a12a049a | 1538 | else if (r->flags.nocache_hack) { |
1539 | ||
1540 | #if USE_DNSSERVERS | |
1541 | ||
62e76326 | 1542 | ipcacheInvalidate(r->host); |
1543 | ||
a12a049a | 1544 | #else |
1545 | ||
1546 | ipcacheInvalidateNegative(r->host); | |
1547 | ||
1548 | #endif /* USE_DNSSERVERS */ | |
1549 | ||
1550 | } | |
1551 | ||
1552 | #endif /* HTTP_VIOLATIONS */ | |
edce4d98 | 1553 | #if USE_CACHE_DIGESTS |
62e76326 | 1554 | |
86a2f789 | 1555 | lookup_type = http->storeEntry() ? "HIT" : "MISS"; |
62e76326 | 1556 | |
edce4d98 | 1557 | #endif |
62e76326 | 1558 | |
86a2f789 | 1559 | if (NULL == http->storeEntry()) { |
62e76326 | 1560 | /* this object isn't in the cache */ |
1561 | debug(85, 3) ("clientProcessRequest2: storeGet() MISS\n"); | |
1562 | http->logType = LOG_TCP_MISS; | |
1563 | doGetMoreData(); | |
1564 | return; | |
edce4d98 | 1565 | } |
62e76326 | 1566 | |
edce4d98 | 1567 | if (Config.onoff.offline) { |
62e76326 | 1568 | debug(85, 3) ("clientProcessRequest2: offline HIT\n"); |
1569 | http->logType = LOG_TCP_HIT; | |
1570 | doGetMoreData(); | |
1571 | return; | |
edce4d98 | 1572 | } |
62e76326 | 1573 | |
edce4d98 | 1574 | if (http->redirect.status) { |
62e76326 | 1575 | /* force this to be a miss */ |
86a2f789 | 1576 | http->storeEntry(NULL); |
62e76326 | 1577 | http->logType = LOG_TCP_MISS; |
1578 | doGetMoreData(); | |
1579 | return; | |
edce4d98 | 1580 | } |
62e76326 | 1581 | |
edce4d98 | 1582 | if (!storeEntryValidToSend(e)) { |
62e76326 | 1583 | debug(85, 3) ("clientProcessRequest2: !storeEntryValidToSend MISS\n"); |
86a2f789 | 1584 | http->storeEntry(NULL); |
62e76326 | 1585 | http->logType = LOG_TCP_MISS; |
1586 | doGetMoreData(); | |
1587 | return; | |
edce4d98 | 1588 | } |
62e76326 | 1589 | |
edce4d98 | 1590 | if (EBIT_TEST(e->flags, ENTRY_SPECIAL)) { |
62e76326 | 1591 | /* Special entries are always hits, no matter what the client says */ |
1592 | debug(85, 3) ("clientProcessRequest2: ENTRY_SPECIAL HIT\n"); | |
1593 | http->logType = LOG_TCP_HIT; | |
1594 | doGetMoreData(); | |
1595 | return; | |
edce4d98 | 1596 | } |
62e76326 | 1597 | |
edce4d98 | 1598 | if (r->flags.nocache) { |
62e76326 | 1599 | debug(85, 3) ("clientProcessRequest2: no-cache REFRESH MISS\n"); |
86a2f789 | 1600 | http->storeEntry(NULL); |
62e76326 | 1601 | http->logType = LOG_TCP_CLIENT_REFRESH_MISS; |
1602 | doGetMoreData(); | |
1603 | return; | |
edce4d98 | 1604 | } |
62e76326 | 1605 | |
edce4d98 | 1606 | debug(85, 3) ("clientProcessRequest2: default HIT\n"); |
e6ccf245 | 1607 | http->logType = LOG_TCP_HIT; |
1608 | doGetMoreData(); | |
edce4d98 | 1609 | } |
1610 | ||
1611 | /* Request more data from the store for the client Stream | |
1612 | * This is *the* entry point to this module. | |
1613 | * | |
1614 | * Preconditions: | |
1615 | * This is the head of the list. | |
1616 | * There is at least one more node. | |
1617 | * data context is not null | |
1618 | */ | |
1619 | void | |
59a1efb2 | 1620 | clientGetMoreData(clientStreamNode * aNode, ClientHttpRequest * http) |
edce4d98 | 1621 | { |
edce4d98 | 1622 | /* Test preconditions */ |
e6ccf245 | 1623 | assert(aNode != NULL); |
1624 | assert(cbdataReferenceValid(aNode)); | |
e6ccf245 | 1625 | assert(aNode->node.prev == NULL); |
1626 | assert(aNode->node.next != NULL); | |
0655fa4d | 1627 | clientReplyContext *context = dynamic_cast<clientReplyContext *>(aNode->data.getRaw()); |
1628 | assert (context); | |
edce4d98 | 1629 | assert(context->http == http); |
1630 | ||
0655fa4d | 1631 | clientStreamNode *next = ( clientStreamNode *)aNode->node.next->data; |
62e76326 | 1632 | |
edce4d98 | 1633 | if (!context->ourNode) |
62e76326 | 1634 | context->ourNode = aNode; |
1635 | ||
e6ccf245 | 1636 | /* no cbdatareference, this is only used once, and safely */ |
edce4d98 | 1637 | if (context->flags.storelogiccomplete) { |
62e76326 | 1638 | StoreIOBuffer tempBuffer; |
1639 | tempBuffer.offset = next->readBuffer.offset + context->headers_sz; | |
1640 | tempBuffer.length = next->readBuffer.length; | |
1641 | tempBuffer.data = next->readBuffer.data; | |
1642 | ||
86a2f789 | 1643 | storeClientCopy(context->sc, http->storeEntry(), |
0655fa4d | 1644 | tempBuffer, clientReplyContext::SendMoreData, context); |
62e76326 | 1645 | return; |
edce4d98 | 1646 | } |
62e76326 | 1647 | |
edce4d98 | 1648 | if (context->http->request->method == METHOD_PURGE) { |
62e76326 | 1649 | context->purgeRequest(); |
1650 | return; | |
edce4d98 | 1651 | } |
62e76326 | 1652 | |
edce4d98 | 1653 | if (context->http->request->method == METHOD_TRACE) { |
62e76326 | 1654 | if (context->http->request->max_forwards == 0) { |
0655fa4d | 1655 | context->traceReply(aNode); |
62e76326 | 1656 | return; |
1657 | } | |
1658 | ||
1659 | /* continue forwarding, not finished yet. */ | |
1660 | http->logType = LOG_TCP_MISS; | |
1661 | ||
1662 | context->doGetMoreData(); | |
edce4d98 | 1663 | } else |
62e76326 | 1664 | context->identifyStoreObject(); |
e6ccf245 | 1665 | } |
1666 | ||
1667 | void | |
1668 | clientReplyContext::doGetMoreData() | |
1669 | { | |
edce4d98 | 1670 | /* We still have to do store logic processing - vary, cache hit etc */ |
62e76326 | 1671 | |
86a2f789 | 1672 | if (http->storeEntry() != NULL) { |
62e76326 | 1673 | /* someone found the object in the cache for us */ |
1674 | StoreIOBuffer tempBuffer; | |
86a2f789 | 1675 | storeLockObject(http->storeEntry()); |
62e76326 | 1676 | |
86a2f789 | 1677 | if (http->storeEntry()->mem_obj == NULL) { |
62e76326 | 1678 | /* |
1679 | * This if-block exists because we don't want to clobber | |
1680 | * a preexiting mem_obj->method value if the mem_obj | |
1681 | * already exists. For example, when a HEAD request | |
1682 | * is a cache hit for a GET response, we want to keep | |
1683 | * the method as GET. | |
1684 | */ | |
86a2f789 | 1685 | storeCreateMemObject(http->storeEntry(), http->uri, |
62e76326 | 1686 | http->log_uri); |
86a2f789 | 1687 | http->storeEntry()->mem_obj->method = |
62e76326 | 1688 | http->request->method; |
1689 | } | |
1690 | ||
86a2f789 | 1691 | sc = storeClientListAdd(http->storeEntry(), this); |
edce4d98 | 1692 | #if DELAY_POOLS |
62e76326 | 1693 | |
1694 | sc->setDelayId(DelayId::DelayClient(http)); | |
edce4d98 | 1695 | #endif |
62e76326 | 1696 | |
1697 | assert(http->logType == LOG_TCP_HIT); | |
1698 | reqofs = 0; | |
1699 | /* guarantee nothing has been sent yet! */ | |
1700 | assert(http->out.size == 0); | |
1701 | assert(http->out.offset == 0); | |
1702 | tempBuffer.offset = reqofs; | |
1703 | tempBuffer.length = getNextNode()->readBuffer.length; | |
1704 | tempBuffer.data = getNextNode()->readBuffer.data; | |
86a2f789 | 1705 | storeClientCopy(sc, http->storeEntry(), |
0655fa4d | 1706 | tempBuffer, CacheHit, this); |
edce4d98 | 1707 | } else { |
62e76326 | 1708 | /* MISS CASE, http->logType is already set! */ |
0655fa4d | 1709 | processMiss(); |
edce4d98 | 1710 | } |
1711 | } | |
1712 | ||
1713 | /* the next node has removed itself from the stream. */ | |
1714 | void | |
59a1efb2 | 1715 | clientReplyDetach(clientStreamNode * node, ClientHttpRequest * http) |
edce4d98 | 1716 | { |
1717 | /* detach from the stream */ | |
edce4d98 | 1718 | clientStreamDetach(node, http); |
1719 | } | |
1720 | ||
1721 | /* | |
1722 | * accepts chunk of a http message in buf, parses prefix, filters headers and | |
1723 | * such, writes processed message to the message recipient | |
1724 | */ | |
1725 | void | |
0655fa4d | 1726 | clientReplyContext::SendMoreData(void *data, StoreIOBuffer result) |
edce4d98 | 1727 | { |
e6ccf245 | 1728 | clientReplyContext *context = static_cast<clientReplyContext *>(data); |
528b2c61 | 1729 | context->sendMoreData (result); |
1730 | } | |
1731 | ||
1732 | void | |
1733 | clientReplyContext::makeThisHead() | |
1734 | { | |
1735 | /* At least, I think thats what this does */ | |
1736 | dlinkDelete(&http->active, &ClientActiveRequests); | |
1737 | dlinkAdd(http, &http->active, &ClientActiveRequests); | |
1738 | } | |
1739 | ||
1740 | bool | |
1741 | clientReplyContext::errorInStream(StoreIOBuffer const &result, size_t const &sizeToProcess)const | |
1742 | { | |
1743 | return /* aborted request */ | |
86a2f789 | 1744 | (http->storeEntry() && EBIT_TEST(http->storeEntry()->flags, ENTRY_ABORTED)) || |
62e76326 | 1745 | /* Upstream read error */ (result.flags.error) || |
1746 | /* Upstream EOF */ (sizeToProcess == 0); | |
528b2c61 | 1747 | } |
1748 | ||
1749 | void | |
1750 | clientReplyContext::sendStreamError(StoreIOBuffer const &result) | |
1751 | { | |
1752 | /* call clientWriteComplete so the client socket gets closed */ | |
1753 | /* We call into the stream, because we don't know that there is a | |
1754 | * client socket! | |
1755 | */ | |
1756 | debug(88,5)("clientReplyContext::sendStreamError: A stream error has occured, marking as complete and sending no data.\n"); | |
1757 | StoreIOBuffer tempBuffer; | |
1758 | flags.complete = 1; | |
1759 | tempBuffer.flags.error = result.flags.error; | |
1760 | clientStreamCallback((clientStreamNode*)http->client_stream.head->data, http, NULL, | |
62e76326 | 1761 | tempBuffer); |
528b2c61 | 1762 | } |
1763 | ||
1764 | void | |
1765 | clientReplyContext::pushStreamData(StoreIOBuffer const &result, char *source) | |
1766 | { | |
1767 | StoreIOBuffer tempBuffer; | |
62e76326 | 1768 | |
528b2c61 | 1769 | if (result.length == 0) { |
62e76326 | 1770 | debug (88,5)("clientReplyContext::pushStreamData: marking request as complete due to 0 length store result\n"); |
1771 | flags.complete = 1; | |
528b2c61 | 1772 | } |
62e76326 | 1773 | |
43ae1d95 | 1774 | assert(result.offset - headers_sz == next()->readBuffer.offset); |
528b2c61 | 1775 | tempBuffer.offset = result.offset - headers_sz; |
1776 | tempBuffer.length = result.length; | |
62e76326 | 1777 | |
43ae1d95 | 1778 | if (tempBuffer.length) |
1779 | tempBuffer.data = source; | |
62e76326 | 1780 | |
528b2c61 | 1781 | clientStreamCallback((clientStreamNode*)http->client_stream.head->data, http, NULL, |
62e76326 | 1782 | tempBuffer); |
528b2c61 | 1783 | } |
1784 | ||
1785 | clientStreamNode * | |
1786 | clientReplyContext::next() const | |
1787 | { | |
1788 | assert ( (clientStreamNode*)http->client_stream.head->next->data == getNextNode()); | |
1789 | return getNextNode(); | |
1790 | } | |
1791 | ||
1792 | void | |
0655fa4d | 1793 | clientReplyContext::waitForMoreData () |
528b2c61 | 1794 | { |
1795 | debug(88,5)("clientReplyContext::waitForMoreData: Waiting for more data to parse reply headers in client side.\n"); | |
1796 | /* We don't have enough to parse the metadata yet */ | |
1797 | /* TODO: the store should give us out of band metadata and | |
1798 | * obsolete this routine | |
1799 | */ | |
1800 | /* wait for more to arrive */ | |
528b2c61 | 1801 | startSendProcess(); |
1802 | } | |
1803 | ||
1804 | void | |
1805 | clientReplyContext::startSendProcess() | |
1806 | { | |
0655fa4d | 1807 | debug(88,5)("clientReplyContext::startSendProcess: triggering store read to SendMoreData\n"); |
528b2c61 | 1808 | assert(reqofs <= HTTP_REQBUF_SZ); |
1809 | /* TODO: copy into the supplied buffer */ | |
1810 | StoreIOBuffer tempBuffer; | |
1811 | tempBuffer.offset = reqofs; | |
1812 | tempBuffer.length = next()->readBuffer.length - reqofs; | |
1813 | tempBuffer.data = next()->readBuffer.data + reqofs; | |
86a2f789 | 1814 | storeClientCopy(sc, http->storeEntry(), |
0655fa4d | 1815 | tempBuffer, SendMoreData, this); |
1816 | } | |
1817 | ||
1818 | void | |
1819 | clientReplyContext::holdReply(HttpReply *aReply) | |
1820 | { | |
1821 | assert (!holdingReply || !aReply); | |
1822 | holdingReply = aReply; | |
528b2c61 | 1823 | } |
1824 | ||
b51aec66 | 1825 | /* |
1826 | * Calculates the maximum size allowed for an HTTP response | |
1827 | */ | |
1828 | void | |
1829 | clientReplyContext::buildMaxBodySize(HttpReply * reply) | |
1830 | { | |
ef1955a5 | 1831 | acl_size_t *l = Config.ReplyBodySize; |
1832 | ACLChecklist *ch; | |
b51aec66 | 1833 | |
8777d90e | 1834 | if (http->logType == LOG_TCP_DENIED) |
1835 | return; | |
1836 | ||
ef1955a5 | 1837 | ch = clientAclChecklistCreate(NULL, http); |
8777d90e | 1838 | |
ef1955a5 | 1839 | ch->reply = reply; |
1840 | ||
1841 | for (l = Config.ReplyBodySize; l; l = l -> next) { | |
7684c4b1 | 1842 | if (ch->matchAclListFast(l->aclList)) { |
43cb430e | 1843 | if (l->size != static_cast<size_t>(-1)) { |
1844 | debug(58, 3) ("clientReplyContext: Setting maxBodySize to %ld\n", (long int) l->size); | |
ef1955a5 | 1845 | http->maxReplyBodySize(l->size); |
43cb430e | 1846 | } |
b51aec66 | 1847 | |
ef1955a5 | 1848 | break; |
1849 | } | |
b51aec66 | 1850 | } |
ef1955a5 | 1851 | |
1852 | delete ch; | |
b51aec66 | 1853 | } |
1854 | ||
4993f571 | 1855 | void |
1856 | clientReplyContext::processReplyAccess () | |
1857 | { | |
1858 | HttpReply *rep = holdingReply; | |
0655fa4d | 1859 | holdReply(NULL); |
b51aec66 | 1860 | buildMaxBodySize(rep); |
62e76326 | 1861 | |
b51aec66 | 1862 | if (http->isReplyBodyTooLarge(rep->content_length)) { |
62e76326 | 1863 | ErrorState *err = |
1864 | clientBuildError(ERR_TOO_BIG, HTTP_FORBIDDEN, NULL, | |
a2ac85d9 | 1865 | http->getConn().getRaw() != NULL ? &http->getConn()->peer.sin_addr : &no_addr, |
62e76326 | 1866 | http->request); |
86a2f789 | 1867 | removeClientStoreReference(&sc, http); |
0655fa4d | 1868 | startError(err); |
62e76326 | 1869 | httpReplyDestroy(rep); |
1870 | return; | |
1871 | } | |
1872 | ||
1873 | headers_sz = rep->hdr_sz; | |
1874 | ACLChecklist *replyChecklist; | |
1875 | replyChecklist = clientAclChecklistCreate(Config.accessList.reply, http); | |
1876 | replyChecklist->reply = rep; | |
0655fa4d | 1877 | holdReply (rep); |
1878 | replyChecklist->nonBlockingCheck(ProcessReplyAccessResult, this); | |
4993f571 | 1879 | } |
1880 | ||
1881 | void | |
0655fa4d | 1882 | clientReplyContext::ProcessReplyAccessResult (int rv, void *voidMe) |
4993f571 | 1883 | { |
1884 | clientReplyContext *me = static_cast<clientReplyContext *>(voidMe); | |
0655fa4d | 1885 | me->processReplyAccessResult(rv); |
4993f571 | 1886 | } |
1887 | ||
1888 | void | |
0655fa4d | 1889 | clientReplyContext::processReplyAccessResult(bool accessAllowed) |
4993f571 | 1890 | { |
62e76326 | 1891 | debug(88, 2) ("The reply for %s %s is %s, because it matched '%s'\n", |
1892 | RequestMethodStr[http->request->method], http->uri, | |
1893 | accessAllowed ? "ALLOWED" : "DENIED", | |
1894 | AclMatchedName ? AclMatchedName : "NO ACL's"); | |
1895 | HttpReply *rep = holdingReply; | |
0655fa4d | 1896 | holdReply (NULL); |
62e76326 | 1897 | |
1898 | if (!accessAllowed && rep->sline.status != HTTP_FORBIDDEN | |
0655fa4d | 1899 | && !alwaysAllowResponse(rep->sline.status)) { |
62e76326 | 1900 | /* the if above is slightly broken, but there is no way |
1901 | * to tell if this is a squid generated error page, or one from | |
1902 | * upstream at this point. */ | |
1903 | ErrorState *err; | |
0185bd6f | 1904 | err_type page_id; |
1905 | page_id = aclGetDenyInfoPage(&Config.denyInfoList, AclMatchedName); | |
1906 | ||
1907 | if (page_id == ERR_NONE) | |
1908 | page_id = ERR_ACCESS_DENIED; | |
1909 | ||
62e76326 | 1910 | err = |
0185bd6f | 1911 | clientBuildError(page_id, HTTP_FORBIDDEN, NULL, |
a2ac85d9 | 1912 | http->getConn().getRaw() != NULL ? &http->getConn()->peer.sin_addr : &no_addr, |
62e76326 | 1913 | http->request); |
0185bd6f | 1914 | |
86a2f789 | 1915 | removeClientStoreReference(&sc, http); |
0185bd6f | 1916 | |
0655fa4d | 1917 | startError(err); |
0185bd6f | 1918 | |
62e76326 | 1919 | httpReplyDestroy(rep); |
0185bd6f | 1920 | |
c2cf9bea | 1921 | http->logType = LOG_TCP_DENIED_REPLY; |
0185bd6f | 1922 | |
62e76326 | 1923 | return; |
1924 | } | |
1925 | ||
0976f8db | 1926 | /* Ok, the reply is allowed, */ |
1927 | http->loggingEntry(http->storeEntry()); | |
1928 | ||
62e76326 | 1929 | ssize_t body_size = reqofs - rep->hdr_sz; |
0976f8db | 1930 | |
62e76326 | 1931 | assert(body_size >= 0); |
0976f8db | 1932 | |
62e76326 | 1933 | debug(88,3) |
0655fa4d | 1934 | ("clientReplyContext::sendMoreData: Appending %d bytes after %d bytes of headers\n", |
62e76326 | 1935 | (int) body_size, rep->hdr_sz); |
0976f8db | 1936 | |
43ae1d95 | 1937 | #if ESI |
62e76326 | 1938 | |
43ae1d95 | 1939 | if (http->flags.accel && rep->sline.status != HTTP_FORBIDDEN && |
0655fa4d | 1940 | !alwaysAllowResponse(rep->sline.status) && |
43ae1d95 | 1941 | esiEnableProcessing(rep)) { |
1942 | debug(88, 2) ("Enabling ESI processing for %s\n", http->uri); | |
1943 | clientStreamInsertHead(&http->client_stream, esiStreamRead, | |
1944 | esiProcessStream, esiStreamDetach, esiStreamStatus, NULL); | |
1945 | } | |
1946 | ||
1947 | #endif | |
62e76326 | 1948 | if (http->request->method == METHOD_HEAD) { |
1949 | /* do not forward body for HEAD replies */ | |
1950 | body_size = 0; | |
1951 | http->flags.done_copying = 1; | |
1952 | flags.complete = 1; | |
1953 | } | |
1954 | ||
1955 | assert (!flags.headersSent); | |
1956 | flags.headersSent = true; | |
1957 | ||
1958 | StoreIOBuffer tempBuffer; | |
1959 | char *buf = next()->readBuffer.data; | |
1960 | char *body_buf = buf + rep->hdr_sz; | |
1961 | ||
49ea0125 | 1962 | //Server side may disable ranges under some circumstances. |
1963 | ||
1964 | if ((!http->request->range)) | |
1965 | next()->readBuffer.offset = 0; | |
1966 | ||
62e76326 | 1967 | if (next()->readBuffer.offset != 0) { |
1968 | if (next()->readBuffer.offset > body_size) { | |
1969 | /* Can't use any of the body we recieved. send nothing */ | |
1970 | tempBuffer.length = 0; | |
1971 | tempBuffer.data = NULL; | |
1972 | } else { | |
1973 | tempBuffer.length = body_size - next()->readBuffer.offset; | |
1974 | tempBuffer.data = body_buf + next()->readBuffer.offset; | |
1975 | } | |
1976 | } else { | |
1977 | tempBuffer.length = body_size; | |
1978 | tempBuffer.data = body_buf; | |
1979 | } | |
1980 | ||
0655fa4d | 1981 | /* TODO??: move the data in the buffer back by the request header size */ |
62e76326 | 1982 | clientStreamCallback((clientStreamNode *)http->client_stream.head->data, |
1983 | http, rep, tempBuffer); | |
1984 | ||
1985 | return; | |
4993f571 | 1986 | } |
1987 | ||
528b2c61 | 1988 | void |
1989 | clientReplyContext::sendMoreData (StoreIOBuffer result) | |
1990 | { | |
50c09fc4 | 1991 | if (deleting) |
1992 | return; | |
1993 | ||
86a2f789 | 1994 | StoreEntry *entry = http->storeEntry(); |
50c09fc4 | 1995 | |
a2ac85d9 | 1996 | ConnStateData::Pointer conn = http->getConn(); |
50c09fc4 | 1997 | |
a2ac85d9 | 1998 | int fd = conn.getRaw() != NULL ? conn->fd : -1; |
50c09fc4 | 1999 | |
528b2c61 | 2000 | char *buf = next()->readBuffer.data; |
50c09fc4 | 2001 | |
c8be6d7b | 2002 | char *body_buf = buf; |
edce4d98 | 2003 | |
62e76326 | 2004 | /* This is always valid until we get the headers as metadata from |
528b2c61 | 2005 | * storeClientCopy. |
2006 | * Then it becomes reqofs == next->readBuffer.offset() | |
af29fa86 | 2007 | */ |
528b2c61 | 2008 | assert(reqofs == 0 || flags.storelogiccomplete); |
af29fa86 | 2009 | |
528b2c61 | 2010 | if (flags.headersSent && buf != result.data) { |
62e76326 | 2011 | /* we've got to copy some data */ |
2012 | assert(result.length <= next()->readBuffer.length); | |
2013 | xmemcpy(buf, result.data, result.length); | |
2014 | body_buf = buf; | |
528b2c61 | 2015 | } else if (!flags.headersSent && |
62e76326 | 2016 | buf + reqofs !=result.data) { |
2017 | /* we've got to copy some data */ | |
2018 | assert(result.length + reqofs <= next()->readBuffer.length); | |
2019 | xmemcpy(buf + reqofs, result.data, result.length); | |
2020 | body_buf = buf; | |
edce4d98 | 2021 | } |
62e76326 | 2022 | |
edce4d98 | 2023 | /* We've got the final data to start pushing... */ |
528b2c61 | 2024 | flags.storelogiccomplete = 1; |
edce4d98 | 2025 | |
4993f571 | 2026 | reqofs += result.length; |
2027 | ||
2028 | assert(reqofs <= HTTP_REQBUF_SZ || flags.headersSent); | |
62e76326 | 2029 | |
edce4d98 | 2030 | assert(http->request != NULL); |
62e76326 | 2031 | |
edce4d98 | 2032 | /* ESI TODO: remove this assert once everything is stable */ |
2033 | assert(http->client_stream.head->data | |
62e76326 | 2034 | && cbdataReferenceValid(http->client_stream.head->data)); |
528b2c61 | 2035 | |
2036 | makeThisHead(); | |
62e76326 | 2037 | |
0655fa4d | 2038 | debug(88, 5) ("clientReplyContext::sendMoreData: %s, %d bytes (%u new bytes)\n", |
62e76326 | 2039 | http->uri, (int) reqofs, (unsigned int)result.length); |
2040 | ||
0655fa4d | 2041 | debug(88, 5) ("clientReplyContext::sendMoreData: FD %d '%s', out.offset=%ld \n", |
62e76326 | 2042 | fd, storeUrl(entry), (long int) http->out.offset); |
528b2c61 | 2043 | |
edce4d98 | 2044 | /* update size of the request */ |
4993f571 | 2045 | reqsize = reqofs; |
62e76326 | 2046 | |
e429f975 | 2047 | if (http->request->flags.resetTCP()) { |
62e76326 | 2048 | /* yuck. FIXME: move to client_side.c */ |
2049 | ||
2050 | if (fd != -1) | |
2051 | comm_reset_close(fd); | |
2052 | ||
2053 | return; | |
528b2c61 | 2054 | } |
62e76326 | 2055 | |
4993f571 | 2056 | if (errorInStream(result, reqofs)) { |
62e76326 | 2057 | sendStreamError(result); |
2058 | return; | |
edce4d98 | 2059 | } |
528b2c61 | 2060 | |
2061 | if (flags.headersSent) { | |
62e76326 | 2062 | pushStreamData (result, buf); |
2063 | return; | |
edce4d98 | 2064 | } |
62e76326 | 2065 | |
0655fa4d | 2066 | buildReply(buf, reqofs); |
4993f571 | 2067 | ssize_t body_size = reqofs; |
62e76326 | 2068 | |
0655fa4d | 2069 | if (holdingReply) { |
21b92762 | 2070 | |
2071 | /* handle headers */ | |
2072 | ||
2073 | if (Config.onoff.log_mime_hdrs) { | |
2074 | size_t k; | |
2075 | ||
2076 | if ((k = headersEnd(buf, reqofs))) { | |
2077 | safe_free(http->al.headers.reply); | |
2078 | http->al.headers.reply = (char *)xcalloc(k + 1, 1); | |
2079 | xstrncpy(http->al.headers.reply, buf, k); | |
2080 | } | |
2081 | } | |
2082 | ||
62e76326 | 2083 | holdingBuffer = result; |
2084 | processReplyAccess (); | |
2085 | return; | |
43ae1d95 | 2086 | |
4993f571 | 2087 | } else if (reqofs < HTTP_REQBUF_SZ && entry->store_status == STORE_PENDING) { |
0655fa4d | 2088 | waitForMoreData(); |
62e76326 | 2089 | return; |
528b2c61 | 2090 | } else if (http->request->method == METHOD_HEAD) { |
62e76326 | 2091 | /* |
2092 | * If we are here, then store_status == STORE_OK and it | |
2093 | * seems we have a HEAD repsponse which is missing the | |
2094 | * empty end-of-headers line (home.mira.net, phttpd/0.99.72 | |
0655fa4d | 2095 | * does this). Because buildReply() fails we just |
62e76326 | 2096 | * call this reply a body, set the done_copying flag and |
2097 | * continue... | |
2098 | */ | |
2099 | /* RBC: Note that this is seriously broken, as we *need* the | |
2100 | * metadata to allow further client modules to work. As such | |
2101 | * webservers are seriously broken, this is probably not | |
2102 | * going to get fixed.. perhapos we should remove it? | |
2103 | */ | |
2104 | debug (88,0)("Broken head response - probably phttpd/0.99.72\n"); | |
2105 | http->flags.done_copying = 1; | |
2106 | flags.complete = 1; | |
2107 | /* | |
2108 | * And as this is a malformed HTTP reply we cannot keep | |
2109 | * the connection persistent | |
2110 | */ | |
2111 | http->request->flags.proxy_keepalive = 0; | |
2112 | ||
62e76326 | 2113 | assert(body_buf && body_size); |
0655fa4d | 2114 | StoreIOBuffer tempBuffer (body_size, 0 ,body_buf); |
62e76326 | 2115 | clientStreamCallback((clientStreamNode *)http->client_stream.head->data, |
2116 | http, NULL, tempBuffer); | |
528b2c61 | 2117 | } else { |
62e76326 | 2118 | debug (88,0)("clientReplyContext::sendMoreData: Unable to parse reply headers within a single HTTP_REQBUF_SZ length buffer\n"); |
2119 | StoreIOBuffer tempBuffer; | |
2120 | tempBuffer.flags.error = 1; | |
0655fa4d | 2121 | /* XXX FIXME: make an html error page here */ |
62e76326 | 2122 | sendStreamError(tempBuffer); |
2123 | return; | |
edce4d98 | 2124 | } |
62e76326 | 2125 | |
528b2c61 | 2126 | fatal ("clientReplyContext::sendMoreData: Unreachable code reached \n"); |
edce4d98 | 2127 | } |
2128 | ||
62e76326 | 2129 | |
edce4d98 | 2130 | |
2131 | /* Using this breaks the client layering just a little! | |
2132 | */ | |
0655fa4d | 2133 | void |
2134 | clientReplyContext::createStoreEntry(method_t m, request_flags flags) | |
edce4d98 | 2135 | { |
0655fa4d | 2136 | assert(http != NULL); |
edce4d98 | 2137 | /* |
2138 | * For erroneous requests, we might not have a h->request, | |
2139 | * so make a fake one. | |
2140 | */ | |
62e76326 | 2141 | |
0655fa4d | 2142 | if (http->request == NULL) |
2143 | http->request = requestLink(requestCreate(m, PROTO_NONE, null_string)); | |
62e76326 | 2144 | |
0655fa4d | 2145 | StoreEntry *e = storeCreateEntry(http->uri, http->log_uri, flags, m); |
62e76326 | 2146 | |
0655fa4d | 2147 | sc = storeClientListAdd(e, this); |
62e76326 | 2148 | |
edce4d98 | 2149 | #if DELAY_POOLS |
62e76326 | 2150 | |
0655fa4d | 2151 | sc->setDelayId(DelayId::DelayClient(http)); |
62e76326 | 2152 | |
edce4d98 | 2153 | #endif |
62e76326 | 2154 | |
0655fa4d | 2155 | reqofs = 0; |
62e76326 | 2156 | |
0655fa4d | 2157 | reqsize = 0; |
62e76326 | 2158 | |
edce4d98 | 2159 | /* I don't think this is actually needed! -- adrian */ |
0655fa4d | 2160 | /* http->reqbuf = http->norm_reqbuf; */ |
2161 | // assert(http->reqbuf == http->norm_reqbuf); | |
edce4d98 | 2162 | /* The next line is illegal because we don't know if the client stream |
2163 | * buffers have been set up | |
2164 | */ | |
0655fa4d | 2165 | // storeClientCopy(http->sc, e, 0, HTTP_REQBUF_SZ, http->reqbuf, |
2166 | // SendMoreData, this); | |
edce4d98 | 2167 | /* So, we mark the store logic as complete */ |
0655fa4d | 2168 | this->flags.storelogiccomplete = 1; |
62e76326 | 2169 | |
edce4d98 | 2170 | /* and get the caller to request a read, from whereever they are */ |
62e76326 | 2171 | /* NOTE: after ANY data flows down the pipe, even one step, |
edce4d98 | 2172 | * this function CAN NOT be used to manage errors |
2173 | */ | |
86a2f789 | 2174 | http->storeEntry(e); |
edce4d98 | 2175 | } |
2176 | ||
2177 | ErrorState * | |
2178 | clientBuildError(err_type page_id, http_status status, char const *url, | |
62e76326 | 2179 | |
ddfcbc22 | 2180 | struct IN_ADDR * src_addr, HttpRequest * request) |
edce4d98 | 2181 | { |
2182 | ErrorState *err = errorCon(page_id, status); | |
2183 | err->src_addr = *src_addr; | |
62e76326 | 2184 | |
edce4d98 | 2185 | if (url) |
62e76326 | 2186 | err->url = xstrdup(url); |
2187 | ||
edce4d98 | 2188 | if (request) |
62e76326 | 2189 | err->request = requestLink(request); |
2190 | ||
edce4d98 | 2191 | return err; |
2192 | } |