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edce4d98 | 1 | |
2 | /* | |
c99de607 | 3 | * $Id: client_side_request.cc,v 1.77 2006/10/31 23:30:57 wessels Exp $ |
69660be0 | 4 | * |
ae45c4de | 5 | * DEBUG: section 85 Client-side Request Routines |
6 | * AUTHOR: Robert Collins (Originally Duane Wessels in client_side.c) | |
69660be0 | 7 | * |
edce4d98 | 8 | * SQUID Web Proxy Cache http://www.squid-cache.org/ |
9 | * ---------------------------------------------------------- | |
0a9297f6 | 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 | * | |
edce4d98 | 34 | */ |
35 | ||
36 | ||
69660be0 | 37 | /* |
38 | * General logic of request processing: | |
39 | * | |
40 | * We run a series of tests to determine if access will be permitted, and to do | |
41 | * any redirection. Then we call into the result clientStream to retrieve data. | |
42 | * From that point on it's up to reply management. | |
edce4d98 | 43 | */ |
44 | ||
45 | #include "squid.h" | |
c8be6d7b | 46 | #include "clientStream.h" |
47 | #include "client_side_request.h" | |
f5691f9c | 48 | #include "AuthUserRequest.h" |
528b2c61 | 49 | #include "HttpRequest.h" |
8000a965 | 50 | #include "ACLChecklist.h" |
51 | #include "ACL.h" | |
a46d2c0e | 52 | #include "client_side.h" |
0655fa4d | 53 | #include "client_side_reply.h" |
54 | #include "Store.h" | |
55 | #include "HttpReply.h" | |
86a2f789 | 56 | #include "MemObject.h" |
de31d06f | 57 | #include "ClientRequestContext.h" |
985c86bc | 58 | #include "SquidTime.h" |
d295d770 | 59 | #include "wordlist.h" |
de31d06f | 60 | |
61 | #if ICAP_CLIENT | |
62 | #include "ICAP/ICAPClientReqmodPrecache.h" | |
63 | #include "ICAP/ICAPElements.h" | |
64 | #include "ICAP/ICAPConfig.h" | |
65 | static void icapAclCheckDoneWrapper(ICAPServiceRep::Pointer service, void *data); | |
ab7ac359 | 66 | extern ICAPConfig TheICAPConfig; |
de31d06f | 67 | #endif |
edce4d98 | 68 | |
69 | #if LINGERING_CLOSE | |
70 | #define comm_close comm_lingering_close | |
71 | #endif | |
72 | ||
73 | static const char *const crlf = "\r\n"; | |
74 | ||
8e2745f4 | 75 | CBDATA_CLASS_INIT(ClientRequestContext); |
76 | ||
77 | void * | |
78 | ClientRequestContext::operator new (size_t size) | |
79 | { | |
80 | assert (size == sizeof(ClientRequestContext)); | |
81 | CBDATA_INIT_TYPE(ClientRequestContext); | |
82 | ClientRequestContext *result = cbdataAlloc(ClientRequestContext); | |
aa625860 | 83 | return result; |
8e2745f4 | 84 | } |
62e76326 | 85 | |
8e2745f4 | 86 | void |
87 | ClientRequestContext::operator delete (void *address) | |
88 | { | |
89 | ClientRequestContext *t = static_cast<ClientRequestContext *>(address); | |
aa625860 | 90 | cbdataFree(t); |
8e2745f4 | 91 | } |
92 | ||
edce4d98 | 93 | /* Local functions */ |
edce4d98 | 94 | /* other */ |
de31d06f | 95 | static void clientAccessCheckDoneWrapper(int, void *); |
59a1efb2 | 96 | static int clientHierarchical(ClientHttpRequest * http); |
97 | static void clientInterpretRequestHeaders(ClientHttpRequest * http); | |
de31d06f | 98 | static RH clientRedirectDoneWrapper; |
99 | static PF checkNoCacheDoneWrapper; | |
e6ccf245 | 100 | extern "C" CSR clientGetMoreData; |
101 | extern "C" CSS clientReplyStatus; | |
102 | extern "C" CSD clientReplyDetach; | |
528b2c61 | 103 | static void checkFailureRatio(err_type, hier_code); |
edce4d98 | 104 | |
8e2745f4 | 105 | ClientRequestContext::~ClientRequestContext() |
106 | { | |
de31d06f | 107 | /* |
a546b04b | 108 | * Release our "lock" on our parent, ClientHttpRequest, if we |
109 | * still have one | |
de31d06f | 110 | */ |
a546b04b | 111 | |
112 | if (http) | |
113 | cbdataReferenceDone(http); | |
62e76326 | 114 | |
501b58f9 | 115 | if (acl_checklist) { |
116 | if (acl_checklist->asyncInProgress()) { | |
117 | acl_checklist->markDeleteWhenDone(); | |
118 | } else { | |
119 | delete acl_checklist; | |
120 | } | |
121 | } | |
6ec67de9 | 122 | |
123 | debugs(85,3, HERE << this << " ClientHttpRequest destructed"); | |
8e2745f4 | 124 | } |
125 | ||
4e2eb5c3 | 126 | ClientRequestContext::ClientRequestContext(ClientHttpRequest *anHttp) : http(cbdataReference(anHttp)), acl_checklist (NULL), redirect_state (REDIRECT_NONE) |
edce4d98 | 127 | { |
57abaac0 | 128 | http_access_done = false; |
129 | redirect_done = false; | |
130 | no_cache_done = false; | |
131 | interpreted_req_hdrs = false; | |
0b86805b | 132 | debugs(85,3, HERE << this << " ClientRequestContext constructed"); |
edce4d98 | 133 | } |
134 | ||
528b2c61 | 135 | CBDATA_CLASS_INIT(ClientHttpRequest); |
8e2745f4 | 136 | |
528b2c61 | 137 | void * |
138 | ClientHttpRequest::operator new (size_t size) | |
139 | { | |
140 | assert (size == sizeof (ClientHttpRequest)); | |
141 | CBDATA_INIT_TYPE(ClientHttpRequest); | |
142 | ClientHttpRequest *result = cbdataAlloc(ClientHttpRequest); | |
aa625860 | 143 | return result; |
528b2c61 | 144 | } |
145 | ||
62e76326 | 146 | void |
528b2c61 | 147 | ClientHttpRequest::operator delete (void *address) |
148 | { | |
aa625860 | 149 | ClientHttpRequest *t = static_cast<ClientHttpRequest *>(address); |
150 | cbdataFree(t); | |
528b2c61 | 151 | } |
152 | ||
a0355e95 | 153 | ClientHttpRequest::ClientHttpRequest(ConnStateData::Pointer aConn) : loggingEntry_(NULL) |
528b2c61 | 154 | { |
528b2c61 | 155 | start = current_time; |
a0355e95 | 156 | setConn(aConn); |
157 | dlinkAdd(this, &active, &ClientActiveRequests); | |
b044675d | 158 | #if ICAP_CLIENT |
159 | ||
160 | request_satisfaction_mode = false; | |
161 | #endif | |
528b2c61 | 162 | } |
163 | ||
0655fa4d | 164 | /* |
165 | * returns true if client specified that the object must come from the cache | |
166 | * without contacting origin server | |
167 | */ | |
168 | bool | |
169 | ClientHttpRequest::onlyIfCached()const | |
170 | { | |
171 | assert(request); | |
172 | return request->cache_control && | |
173 | EBIT_TEST(request->cache_control->mask, CC_ONLY_IF_CACHED); | |
174 | } | |
175 | ||
528b2c61 | 176 | /* |
177 | * This function is designed to serve a fairly specific purpose. | |
178 | * Occasionally our vBNS-connected caches can talk to each other, but not | |
179 | * the rest of the world. Here we try to detect frequent failures which | |
180 | * make the cache unusable (e.g. DNS lookup and connect() failures). If | |
181 | * the failure:success ratio goes above 1.0 then we go into "hit only" | |
182 | * mode where we only return UDP_HIT or UDP_MISS_NOFETCH. Neighbors | |
183 | * will only fetch HITs from us if they are using the ICP protocol. We | |
184 | * stay in this mode for 5 minutes. | |
185 | * | |
186 | * Duane W., Sept 16, 1996 | |
187 | */ | |
188 | ||
189 | #define FAILURE_MODE_TIME 300 | |
190 | ||
191 | static void | |
192 | checkFailureRatio(err_type etype, hier_code hcode) | |
193 | { | |
194 | static double magic_factor = 100.0; | |
195 | double n_good; | |
196 | double n_bad; | |
62e76326 | 197 | |
528b2c61 | 198 | if (hcode == HIER_NONE) |
62e76326 | 199 | return; |
200 | ||
528b2c61 | 201 | n_good = magic_factor / (1.0 + request_failure_ratio); |
62e76326 | 202 | |
528b2c61 | 203 | n_bad = magic_factor - n_good; |
62e76326 | 204 | |
528b2c61 | 205 | switch (etype) { |
62e76326 | 206 | |
528b2c61 | 207 | case ERR_DNS_FAIL: |
62e76326 | 208 | |
528b2c61 | 209 | case ERR_CONNECT_FAIL: |
62e76326 | 210 | |
528b2c61 | 211 | case ERR_READ_ERROR: |
62e76326 | 212 | n_bad++; |
213 | break; | |
214 | ||
528b2c61 | 215 | default: |
62e76326 | 216 | n_good++; |
528b2c61 | 217 | } |
62e76326 | 218 | |
528b2c61 | 219 | request_failure_ratio = n_bad / n_good; |
62e76326 | 220 | |
528b2c61 | 221 | if (hit_only_mode_until > squid_curtime) |
62e76326 | 222 | return; |
223 | ||
528b2c61 | 224 | if (request_failure_ratio < 1.0) |
62e76326 | 225 | return; |
226 | ||
528b2c61 | 227 | debug(33, 0) ("Failure Ratio at %4.2f\n", request_failure_ratio); |
62e76326 | 228 | |
528b2c61 | 229 | debug(33, 0) ("Going into hit-only-mode for %d minutes...\n", |
62e76326 | 230 | FAILURE_MODE_TIME / 60); |
231 | ||
528b2c61 | 232 | hit_only_mode_until = squid_curtime + FAILURE_MODE_TIME; |
62e76326 | 233 | |
528b2c61 | 234 | request_failure_ratio = 0.8; /* reset to something less than 1.0 */ |
235 | } | |
236 | ||
237 | ClientHttpRequest::~ClientHttpRequest() | |
238 | { | |
239 | debug(33, 3) ("httpRequestFree: %s\n", uri); | |
72bdee4c | 240 | PROF_start(httpRequestFree); |
528b2c61 | 241 | /* if body_connection !NULL, then ProcessBody has not |
242 | * found the end of the body yet | |
243 | */ | |
62e76326 | 244 | |
3b299123 | 245 | if (request && request->body_reader != NULL) { |
0b86805b | 246 | request->body_reader = NULL; // refcounted, triggers abort if needed. |
247 | debugs(32, 3, HERE << "setting body_reader = NULL for request " << request); | |
21b92762 | 248 | } |
62e76326 | 249 | |
528b2c61 | 250 | /* the ICP check here was erroneous |
251 | * - storeReleaseRequest was always called if entry was valid | |
252 | */ | |
253 | assert(logType < LOG_TYPE_MAX); | |
254 | logRequest(); | |
0976f8db | 255 | loggingEntry(NULL); |
256 | ||
528b2c61 | 257 | if (request) |
62e76326 | 258 | checkFailureRatio(request->errType, al.hier.code); |
259 | ||
528b2c61 | 260 | freeResources(); |
62e76326 | 261 | |
de31d06f | 262 | #if ICAP_CLIENT |
4e2eb5c3 | 263 | if (icap) |
de31d06f | 264 | delete icap; |
de31d06f | 265 | #endif |
266 | if (calloutContext) | |
267 | delete calloutContext; | |
268 | ||
528b2c61 | 269 | /* moving to the next connection is handled by the context free */ |
270 | dlinkDelete(&active, &ClientActiveRequests); | |
72bdee4c | 271 | PROF_stop(httpRequestFree); |
528b2c61 | 272 | } |
62e76326 | 273 | |
edce4d98 | 274 | /* Create a request and kick it off */ |
69660be0 | 275 | /* |
276 | * TODO: Pass in the buffers to be used in the inital Read request, as they are | |
277 | * determined by the user | |
edce4d98 | 278 | */ |
279 | int /* returns nonzero on failure */ | |
280 | clientBeginRequest(method_t method, char const *url, CSCB * streamcallback, | |
0655fa4d | 281 | CSD * streamdetach, ClientStreamData streamdata, HttpHeader const *header, |
62e76326 | 282 | char *tailbuf, size_t taillen) |
edce4d98 | 283 | { |
284 | size_t url_sz; | |
450e0c10 | 285 | HttpVersion http_ver (1, 0); |
a0355e95 | 286 | ClientHttpRequest *http = new ClientHttpRequest(NULL); |
190154cf | 287 | HttpRequest *request; |
528b2c61 | 288 | StoreIOBuffer tempBuffer; |
edce4d98 | 289 | http->start = current_time; |
290 | /* this is only used to adjust the connection offset in client_side.c */ | |
291 | http->req_sz = 0; | |
c8be6d7b | 292 | tempBuffer.length = taillen; |
293 | tempBuffer.data = tailbuf; | |
edce4d98 | 294 | /* client stream setup */ |
295 | clientStreamInit(&http->client_stream, clientGetMoreData, clientReplyDetach, | |
0655fa4d | 296 | clientReplyStatus, new clientReplyContext(http), streamcallback, |
62e76326 | 297 | streamdetach, streamdata, tempBuffer); |
edce4d98 | 298 | /* make it visible in the 'current acctive requests list' */ |
edce4d98 | 299 | /* Set flags */ |
a46d2c0e | 300 | /* internal requests only makes sense in an |
301 | * accelerator today. TODO: accept flags ? */ | |
302 | http->flags.accel = 1; | |
edce4d98 | 303 | /* allow size for url rewriting */ |
304 | url_sz = strlen(url) + Config.appendDomainLen + 5; | |
e6ccf245 | 305 | http->uri = (char *)xcalloc(url_sz, 1); |
edce4d98 | 306 | strcpy(http->uri, url); |
307 | ||
c21ad0f5 | 308 | if ((request = HttpRequest::CreateFromUrlAndMethod(http->uri, method)) == NULL) { |
62e76326 | 309 | debug(85, 5) ("Invalid URL: %s\n", http->uri); |
310 | return -1; | |
edce4d98 | 311 | } |
62e76326 | 312 | |
69660be0 | 313 | /* |
314 | * now update the headers in request with our supplied headers. urLParse | |
315 | * should return a blank header set, but we use Update to be sure of | |
316 | * correctness. | |
edce4d98 | 317 | */ |
318 | if (header) | |
a9925b40 | 319 | request->header.update(header, NULL); |
62e76326 | 320 | |
edce4d98 | 321 | http->log_uri = xstrdup(urlCanonicalClean(request)); |
62e76326 | 322 | |
edce4d98 | 323 | /* http struct now ready */ |
324 | ||
69660be0 | 325 | /* |
326 | * build new header list *? TODO | |
edce4d98 | 327 | */ |
328 | request->flags.accelerated = http->flags.accel; | |
62e76326 | 329 | |
a46d2c0e | 330 | request->flags.internalclient = 1; |
331 | ||
332 | /* this is an internally created | |
333 | * request, not subject to acceleration | |
334 | * target overrides */ | |
69660be0 | 335 | /* |
336 | * FIXME? Do we want to detect and handle internal requests of internal | |
337 | * objects ? | |
338 | */ | |
edce4d98 | 339 | |
340 | /* Internally created requests cannot have bodies today */ | |
341 | request->content_length = 0; | |
62e76326 | 342 | |
edce4d98 | 343 | request->client_addr = no_addr; |
62e76326 | 344 | |
edce4d98 | 345 | request->my_addr = no_addr; /* undefined for internal requests */ |
62e76326 | 346 | |
edce4d98 | 347 | request->my_port = 0; |
62e76326 | 348 | |
edce4d98 | 349 | request->http_ver = http_ver; |
62e76326 | 350 | |
6dd9f4bd | 351 | http->request = HTTPMSGLOCK(request); |
edce4d98 | 352 | |
353 | /* optional - skip the access check ? */ | |
de31d06f | 354 | http->calloutContext = new ClientRequestContext(http); |
355 | ||
57abaac0 | 356 | http->calloutContext->http_access_done = false; |
de31d06f | 357 | |
57abaac0 | 358 | http->calloutContext->redirect_done = true; |
de31d06f | 359 | |
57abaac0 | 360 | http->calloutContext->no_cache_done = true; |
de31d06f | 361 | |
362 | http->doCallouts(); | |
62e76326 | 363 | |
edce4d98 | 364 | return 0; |
365 | } | |
366 | ||
de31d06f | 367 | bool |
368 | ClientRequestContext::httpStateIsValid() | |
369 | { | |
370 | ClientHttpRequest *http_ = http; | |
371 | ||
372 | if (cbdataReferenceValid(http_)) | |
373 | return true; | |
374 | ||
375 | http = NULL; | |
376 | ||
377 | cbdataReferenceDone(http_); | |
378 | ||
379 | return false; | |
380 | } | |
381 | ||
edce4d98 | 382 | /* This is the entry point for external users of the client_side routines */ |
383 | void | |
de31d06f | 384 | ClientRequestContext::clientAccessCheck() |
edce4d98 | 385 | { |
de31d06f | 386 | acl_checklist = |
62e76326 | 387 | clientAclChecklistCreate(Config.accessList.http, http); |
de31d06f | 388 | acl_checklist->nonBlockingCheck(clientAccessCheckDoneWrapper, this); |
edce4d98 | 389 | } |
390 | ||
391 | void | |
de31d06f | 392 | clientAccessCheckDoneWrapper(int answer, void *data) |
edce4d98 | 393 | { |
de31d06f | 394 | ClientRequestContext *calloutContext = (ClientRequestContext *) data; |
fbade053 | 395 | |
de31d06f | 396 | if (!calloutContext->httpStateIsValid()) |
62e76326 | 397 | return; |
62e76326 | 398 | |
de31d06f | 399 | calloutContext->clientAccessCheckDone(answer); |
400 | } | |
401 | ||
402 | void | |
403 | ClientRequestContext::clientAccessCheckDone(int answer) | |
404 | { | |
405 | acl_checklist = NULL; | |
edce4d98 | 406 | err_type page_id; |
407 | http_status status; | |
edce4d98 | 408 | debug(85, 2) ("The request %s %s is %s, because it matched '%s'\n", |
62e76326 | 409 | RequestMethodStr[http->request->method], http->uri, |
410 | answer == ACCESS_ALLOWED ? "ALLOWED" : "DENIED", | |
411 | AclMatchedName ? AclMatchedName : "NO ACL's"); | |
f5691f9c | 412 | char const *proxy_auth_msg = "<null>"; |
413 | ||
414 | if (http->getConn().getRaw() != NULL && http->getConn()->auth_user_request != NULL) | |
415 | proxy_auth_msg = http->getConn()->auth_user_request->denyMessage("<null>"); | |
416 | else if (http->request->auth_user_request != NULL) | |
417 | proxy_auth_msg = http->request->auth_user_request->denyMessage("<null>"); | |
62e76326 | 418 | |
de31d06f | 419 | if (answer != ACCESS_ALLOWED) { |
62e76326 | 420 | /* Send an error */ |
62e76326 | 421 | debug(85, 5) ("Access Denied: %s\n", http->uri); |
422 | debug(85, 5) ("AclMatchedName = %s\n", | |
423 | AclMatchedName ? AclMatchedName : "<null>"); | |
424 | debug(85, 5) ("Proxy Auth Message = %s\n", | |
425 | proxy_auth_msg ? proxy_auth_msg : "<null>"); | |
426 | /* | |
427 | * NOTE: get page_id here, based on AclMatchedName because if | |
428 | * USE_DELAY_POOLS is enabled, then AclMatchedName gets clobbered in | |
429 | * the clientCreateStoreEntry() call just below. Pedro Ribeiro | |
430 | * <pribeiro@isel.pt> | |
431 | */ | |
432 | page_id = aclGetDenyInfoPage(&Config.denyInfoList, AclMatchedName); | |
433 | http->logType = LOG_TCP_DENIED; | |
434 | ||
435 | if (answer == ACCESS_REQ_PROXY_AUTH || aclIsProxyAuth(AclMatchedName)) { | |
436 | if (!http->flags.accel) { | |
437 | /* Proxy authorisation needed */ | |
438 | status = HTTP_PROXY_AUTHENTICATION_REQUIRED; | |
439 | } else { | |
440 | /* WWW authorisation needed */ | |
441 | status = HTTP_UNAUTHORIZED; | |
442 | } | |
443 | ||
444 | if (page_id == ERR_NONE) | |
445 | page_id = ERR_CACHE_ACCESS_DENIED; | |
446 | } else { | |
447 | status = HTTP_FORBIDDEN; | |
448 | ||
449 | if (page_id == ERR_NONE) | |
450 | page_id = ERR_ACCESS_DENIED; | |
451 | } | |
452 | ||
de31d06f | 453 | clientStreamNode *node = (clientStreamNode *)http->client_stream.tail->prev->data; |
0655fa4d | 454 | clientReplyContext *repContext = dynamic_cast<clientReplyContext *>(node->data.getRaw()); |
455 | assert (repContext); | |
456 | repContext->setReplyToError(page_id, status, | |
457 | http->request->method, NULL, | |
a2ac85d9 | 458 | http->getConn().getRaw() != NULL ? &http->getConn()->peer.sin_addr : &no_addr, http->request, |
459 | NULL, http->getConn().getRaw() != NULL | |
98242069 | 460 | && http->getConn()->auth_user_request ? http->getConn()-> |
0655fa4d | 461 | auth_user_request : http->request->auth_user_request); |
62e76326 | 462 | node = (clientStreamNode *)http->client_stream.tail->data; |
463 | clientStreamRead(node, http, node->readBuffer); | |
a546b04b | 464 | return; |
edce4d98 | 465 | } |
de31d06f | 466 | |
467 | /* ACCESS_ALLOWED continues here ... */ | |
468 | safe_free(http->uri); | |
469 | ||
470 | http->uri = xstrdup(urlCanonical(http->request)); | |
471 | ||
472 | http->doCallouts(); | |
473 | } | |
474 | ||
475 | #if ICAP_CLIENT | |
476 | void | |
477 | ClientRequestContext::icapAccessCheck() | |
478 | { | |
479 | ICAPAccessCheck *icap_access_check; | |
480 | ||
e8fe1384 | 481 | icap_access_check = new ICAPAccessCheck(ICAP::methodReqmod, ICAP::pointPreCache, http->request, NULL, icapAclCheckDoneWrapper, this); |
482 | ||
483 | if (icap_access_check != NULL) { | |
de31d06f | 484 | icap_access_check->check(); |
485 | return; | |
486 | } | |
487 | ||
488 | http->doCallouts(); | |
489 | } | |
490 | ||
491 | static void | |
492 | icapAclCheckDoneWrapper(ICAPServiceRep::Pointer service, void *data) | |
493 | { | |
494 | ClientRequestContext *calloutContext = (ClientRequestContext *)data; | |
495 | ||
496 | if (!calloutContext->httpStateIsValid()) | |
497 | return; | |
498 | ||
499 | calloutContext->icapAclCheckDone(service); | |
500 | } | |
501 | ||
502 | void | |
503 | ClientRequestContext::icapAclCheckDone(ICAPServiceRep::Pointer service) | |
504 | { | |
6ec67de9 | 505 | debugs(93,3,HERE << this << " icapAclCheckDone called"); |
de31d06f | 506 | /* |
507 | * No matching ICAP service in the config file | |
508 | */ | |
509 | ||
510 | if (service == NULL) { | |
511 | http->doCallouts(); | |
512 | return; | |
513 | } | |
514 | ||
515 | /* | |
516 | * Setup ICAP state and such. If successful, just return. | |
517 | * We'll get back to doCallouts() after REQMOD is done. | |
518 | */ | |
6ec67de9 | 519 | assert(http); |
520 | ||
de31d06f | 521 | if (0 == http->doIcap(service)) |
522 | return; | |
523 | ||
524 | /* | |
525 | * If doIcap() fails, then we have to either return an error | |
526 | * to the user, or keep going without ICAP. | |
527 | */ | |
528 | fatal("Fix this case in ClientRequestContext::icapAclCheckDone()"); | |
c99de607 | 529 | // And when fixed, check whether the service is down in doIcap and |
530 | // if it is, abort early, without creating ICAPClientReqmodPrecache. | |
531 | // See Server::startIcap() and its use. | |
de31d06f | 532 | |
533 | http->doCallouts(); | |
edce4d98 | 534 | } |
535 | ||
de31d06f | 536 | #endif |
537 | ||
14cc8559 | 538 | static void |
539 | clientRedirectAccessCheckDone(int answer, void *data) | |
540 | { | |
541 | ClientRequestContext *context = (ClientRequestContext *)data; | |
59a1efb2 | 542 | ClientHttpRequest *http = context->http; |
14cc8559 | 543 | context->acl_checklist = NULL; |
544 | ||
545 | if (answer == ACCESS_ALLOWED) | |
de31d06f | 546 | redirectStart(http, clientRedirectDoneWrapper, context); |
14cc8559 | 547 | else |
de31d06f | 548 | context->clientRedirectDone(NULL); |
14cc8559 | 549 | } |
550 | ||
de31d06f | 551 | void |
552 | ClientRequestContext::clientRedirectStart() | |
14cc8559 | 553 | { |
14cc8559 | 554 | debug(33, 5) ("clientRedirectStart: '%s'\n", http->uri); |
555 | ||
14cc8559 | 556 | if (Config.accessList.redirector) { |
de31d06f | 557 | acl_checklist = clientAclChecklistCreate(Config.accessList.redirector, http); |
558 | acl_checklist->nonBlockingCheck(clientRedirectAccessCheckDone, this); | |
14cc8559 | 559 | } else |
de31d06f | 560 | redirectStart(http, clientRedirectDoneWrapper, this); |
14cc8559 | 561 | } |
562 | ||
edce4d98 | 563 | static int |
59a1efb2 | 564 | clientHierarchical(ClientHttpRequest * http) |
edce4d98 | 565 | { |
566 | const char *url = http->uri; | |
190154cf | 567 | HttpRequest *request = http->request; |
edce4d98 | 568 | method_t method = request->method; |
569 | const wordlist *p = NULL; | |
570 | ||
69660be0 | 571 | /* |
572 | * IMS needs a private key, so we can use the hierarchy for IMS only if our | |
573 | * neighbors support private keys | |
574 | */ | |
62e76326 | 575 | |
edce4d98 | 576 | if (request->flags.ims && !neighbors_do_private_keys) |
62e76326 | 577 | return 0; |
578 | ||
69660be0 | 579 | /* |
580 | * This is incorrect: authenticating requests can be sent via a hierarchy | |
06b97e72 | 581 | * (they can even be cached if the correct headers are set on the reply) |
edce4d98 | 582 | */ |
583 | if (request->flags.auth) | |
62e76326 | 584 | return 0; |
585 | ||
edce4d98 | 586 | if (method == METHOD_TRACE) |
62e76326 | 587 | return 1; |
588 | ||
edce4d98 | 589 | if (method != METHOD_GET) |
62e76326 | 590 | return 0; |
591 | ||
edce4d98 | 592 | /* scan hierarchy_stoplist */ |
593 | for (p = Config.hierarchy_stoplist; p; p = p->next) | |
62e76326 | 594 | if (strstr(url, p->key)) |
595 | return 0; | |
596 | ||
edce4d98 | 597 | if (request->flags.loopdetect) |
62e76326 | 598 | return 0; |
599 | ||
edce4d98 | 600 | if (request->protocol == PROTO_HTTP) |
62e76326 | 601 | return httpCachable(method); |
602 | ||
edce4d98 | 603 | if (request->protocol == PROTO_GOPHER) |
62e76326 | 604 | return gopherCachable(request); |
605 | ||
edce4d98 | 606 | if (request->protocol == PROTO_WAIS) |
62e76326 | 607 | return 0; |
608 | ||
edce4d98 | 609 | if (request->protocol == PROTO_CACHEOBJ) |
62e76326 | 610 | return 0; |
611 | ||
edce4d98 | 612 | return 1; |
613 | } | |
614 | ||
615 | ||
616 | static void | |
59a1efb2 | 617 | clientInterpretRequestHeaders(ClientHttpRequest * http) |
edce4d98 | 618 | { |
190154cf | 619 | HttpRequest *request = http->request; |
0ef77270 | 620 | HttpHeader *req_hdr = &request->header; |
edce4d98 | 621 | int no_cache = 0; |
a787b56a | 622 | #if !(ESI) || defined(USE_USERAGENT_LOG) || defined(USE_REFERER_LOG) |
62e76326 | 623 | |
edce4d98 | 624 | const char *str; |
625 | #endif | |
62e76326 | 626 | |
edce4d98 | 627 | request->imslen = -1; |
a9925b40 | 628 | request->ims = req_hdr->getTime(HDR_IF_MODIFIED_SINCE); |
62e76326 | 629 | |
edce4d98 | 630 | if (request->ims > 0) |
62e76326 | 631 | request->flags.ims = 1; |
632 | ||
edce4d98 | 633 | #if ESI |
69660be0 | 634 | /* |
635 | * We ignore Cache-Control as per the Edge Architecture Section 3. See | |
636 | * www.esi.org for more information. | |
edce4d98 | 637 | */ |
638 | #else | |
62e76326 | 639 | |
a9925b40 | 640 | if (req_hdr->has(HDR_PRAGMA)) { |
641 | String s = req_hdr->getList(HDR_PRAGMA); | |
62e76326 | 642 | |
643 | if (strListIsMember(&s, "no-cache", ',')) | |
644 | no_cache++; | |
645 | ||
646 | s.clean(); | |
edce4d98 | 647 | } |
62e76326 | 648 | |
edce4d98 | 649 | if (request->cache_control) |
62e76326 | 650 | if (EBIT_TEST(request->cache_control->mask, CC_NO_CACHE)) |
651 | no_cache++; | |
652 | ||
69660be0 | 653 | /* |
62e76326 | 654 | * Work around for supporting the Reload button in IE browsers when Squid |
655 | * is used as an accelerator or transparent proxy, by turning accelerated | |
656 | * IMS request to no-cache requests. Now knows about IE 5.5 fix (is | |
657 | * actually only fixed in SP1, but we can't tell whether we are talking to | |
658 | * SP1 or not so all 5.5 versions are treated 'normally'). | |
659 | */ | |
edce4d98 | 660 | if (Config.onoff.ie_refresh) { |
62e76326 | 661 | if (http->flags.accel && request->flags.ims) { |
a9925b40 | 662 | if ((str = req_hdr->getStr(HDR_USER_AGENT))) { |
62e76326 | 663 | if (strstr(str, "MSIE 5.01") != NULL) |
664 | no_cache++; | |
665 | else if (strstr(str, "MSIE 5.0") != NULL) | |
666 | no_cache++; | |
667 | else if (strstr(str, "MSIE 4.") != NULL) | |
668 | no_cache++; | |
669 | else if (strstr(str, "MSIE 3.") != NULL) | |
670 | no_cache++; | |
671 | } | |
672 | } | |
edce4d98 | 673 | } |
62e76326 | 674 | |
edce4d98 | 675 | #endif |
676 | if (no_cache) { | |
677 | #if HTTP_VIOLATIONS | |
62e76326 | 678 | |
679 | if (Config.onoff.reload_into_ims) | |
680 | request->flags.nocache_hack = 1; | |
681 | else if (refresh_nocache_hack) | |
682 | request->flags.nocache_hack = 1; | |
683 | else | |
edce4d98 | 684 | #endif |
62e76326 | 685 | |
686 | request->flags.nocache = 1; | |
edce4d98 | 687 | } |
62e76326 | 688 | |
0ef77270 | 689 | /* ignore range header in non-GETs or non-HEADs */ |
690 | if (request->method == METHOD_GET || request->method == METHOD_HEAD) { | |
a9925b40 | 691 | request->range = req_hdr->getRange(); |
62e76326 | 692 | |
693 | if (request->range) { | |
694 | request->flags.range = 1; | |
695 | clientStreamNode *node = (clientStreamNode *)http->client_stream.tail->data; | |
696 | /* XXX: This is suboptimal. We should give the stream the range set, | |
697 | * and thereby let the top of the stream set the offset when the | |
698 | * size becomes known. As it is, we will end up requesting from 0 | |
699 | * for evey -X range specification. | |
700 | * RBC - this may be somewhat wrong. We should probably set the range | |
701 | * iter up at this point. | |
702 | */ | |
703 | node->readBuffer.offset = request->range->lowestOffset(0); | |
704 | http->range_iter.pos = request->range->begin(); | |
705 | http->range_iter.valid = true; | |
706 | } | |
edce4d98 | 707 | } |
62e76326 | 708 | |
0ef77270 | 709 | /* Only HEAD and GET requests permit a Range or Request-Range header. |
710 | * If these headers appear on any other type of request, delete them now. | |
711 | */ | |
712 | else { | |
713 | req_hdr->delById(HDR_RANGE); | |
714 | req_hdr->delById(HDR_REQUEST_RANGE); | |
715 | request->range = NULL; | |
716 | } | |
717 | ||
a9925b40 | 718 | if (req_hdr->has(HDR_AUTHORIZATION)) |
62e76326 | 719 | request->flags.auth = 1; |
720 | ||
edce4d98 | 721 | if (request->login[0] != '\0') |
62e76326 | 722 | request->flags.auth = 1; |
723 | ||
a9925b40 | 724 | if (req_hdr->has(HDR_VIA)) { |
725 | String s = req_hdr->getList(HDR_VIA); | |
62e76326 | 726 | /* |
727 | * ThisCache cannot be a member of Via header, "1.0 ThisCache" can. | |
728 | * Note ThisCache2 has a space prepended to the hostname so we don't | |
729 | * accidentally match super-domains. | |
730 | */ | |
731 | ||
732 | if (strListIsSubstr(&s, ThisCache2, ',')) { | |
733 | debugObj(33, 1, "WARNING: Forwarding loop detected for:\n", | |
734 | request, (ObjPackMethod) & httpRequestPack); | |
735 | request->flags.loopdetect = 1; | |
736 | } | |
737 | ||
edce4d98 | 738 | #if FORW_VIA_DB |
62e76326 | 739 | fvdbCountVia(s.buf()); |
740 | ||
edce4d98 | 741 | #endif |
62e76326 | 742 | |
743 | s.clean(); | |
edce4d98 | 744 | } |
62e76326 | 745 | |
edce4d98 | 746 | #if USE_USERAGENT_LOG |
a9925b40 | 747 | if ((str = req_hdr->getStr(HDR_USER_AGENT))) |
7928e475 | 748 | logUserAgent(fqdnFromAddr(http->getConn().getRaw() ? http->getConn()->log_addr : no_addr), str); |
62e76326 | 749 | |
edce4d98 | 750 | #endif |
751 | #if USE_REFERER_LOG | |
62e76326 | 752 | |
a9925b40 | 753 | if ((str = req_hdr->getStr(HDR_REFERER))) |
7928e475 | 754 | logReferer(fqdnFromAddr(http->getConn().getRaw() ? http->getConn()->log_addr : no_addr), str, http->log_uri); |
62e76326 | 755 | |
edce4d98 | 756 | #endif |
757 | #if FORW_VIA_DB | |
62e76326 | 758 | |
a9925b40 | 759 | if (req_hdr->has(HDR_X_FORWARDED_FOR)) { |
760 | String s = req_hdr->getList(HDR_X_FORWARDED_FOR); | |
62e76326 | 761 | fvdbCountForw(s.buf()); |
762 | s.clean(); | |
edce4d98 | 763 | } |
62e76326 | 764 | |
edce4d98 | 765 | #endif |
766 | if (request->method == METHOD_TRACE) { | |
a9925b40 | 767 | request->max_forwards = req_hdr->getInt(HDR_MAX_FORWARDS); |
edce4d98 | 768 | } |
62e76326 | 769 | |
610ee341 | 770 | request->flags.cachable = http->request->cacheable(); |
62e76326 | 771 | |
edce4d98 | 772 | if (clientHierarchical(http)) |
62e76326 | 773 | request->flags.hierarchical = 1; |
774 | ||
edce4d98 | 775 | debug(85, 5) ("clientInterpretRequestHeaders: REQ_NOCACHE = %s\n", |
62e76326 | 776 | request->flags.nocache ? "SET" : "NOT SET"); |
777 | ||
edce4d98 | 778 | debug(85, 5) ("clientInterpretRequestHeaders: REQ_CACHABLE = %s\n", |
62e76326 | 779 | request->flags.cachable ? "SET" : "NOT SET"); |
780 | ||
edce4d98 | 781 | debug(85, 5) ("clientInterpretRequestHeaders: REQ_HIERARCHICAL = %s\n", |
62e76326 | 782 | request->flags.hierarchical ? "SET" : "NOT SET"); |
edce4d98 | 783 | } |
784 | ||
785 | void | |
de31d06f | 786 | clientRedirectDoneWrapper(void *data, char *result) |
edce4d98 | 787 | { |
de31d06f | 788 | ClientRequestContext *calloutContext = (ClientRequestContext *)data; |
db02222f | 789 | |
de31d06f | 790 | if (!calloutContext->httpStateIsValid()) |
62e76326 | 791 | return; |
62e76326 | 792 | |
de31d06f | 793 | calloutContext->clientRedirectDone(result); |
794 | } | |
795 | ||
796 | void | |
797 | ClientRequestContext::clientRedirectDone(char *result) | |
798 | { | |
190154cf | 799 | HttpRequest *new_request = NULL; |
800 | HttpRequest *old_request = http->request; | |
edce4d98 | 801 | debug(85, 5) ("clientRedirectDone: '%s' result=%s\n", http->uri, |
62e76326 | 802 | result ? result : "NULL"); |
de31d06f | 803 | assert(redirect_state == REDIRECT_PENDING); |
804 | redirect_state = REDIRECT_DONE; | |
62e76326 | 805 | |
edce4d98 | 806 | if (result) { |
62e76326 | 807 | http_status status = (http_status) atoi(result); |
808 | ||
809 | if (status == HTTP_MOVED_PERMANENTLY | |
810 | || status == HTTP_MOVED_TEMPORARILY | |
811 | || status == HTTP_SEE_OTHER | |
812 | || status == HTTP_TEMPORARY_REDIRECT) { | |
813 | char *t = result; | |
814 | ||
815 | if ((t = strchr(result, ':')) != NULL) { | |
816 | http->redirect.status = status; | |
817 | http->redirect.location = xstrdup(t + 1); | |
818 | } else { | |
819 | debug(85, 1) ("clientRedirectDone: bad input: %s\n", result); | |
820 | } | |
2baf58c3 | 821 | } else if (strcmp(result, http->uri)) |
c21ad0f5 | 822 | new_request = HttpRequest::CreateFromUrlAndMethod(result, old_request->method); |
edce4d98 | 823 | } |
62e76326 | 824 | |
edce4d98 | 825 | if (new_request) { |
62e76326 | 826 | safe_free(http->uri); |
827 | http->uri = xstrdup(urlCanonical(new_request)); | |
828 | new_request->http_ver = old_request->http_ver; | |
a9925b40 | 829 | new_request->header.append(&old_request->header); |
62e76326 | 830 | new_request->client_addr = old_request->client_addr; |
47b0c1fa | 831 | new_request->client_port = old_request->client_port; |
62e76326 | 832 | new_request->my_addr = old_request->my_addr; |
833 | new_request->my_port = old_request->my_port; | |
834 | new_request->flags = old_request->flags; | |
3c1f01bc | 835 | new_request->flags.redirected = 1; |
62e76326 | 836 | |
837 | if (old_request->auth_user_request) { | |
838 | new_request->auth_user_request = old_request->auth_user_request; | |
f5691f9c | 839 | |
840 | new_request->auth_user_request->lock() | |
841 | ||
842 | ; | |
62e76326 | 843 | } |
844 | ||
3b299123 | 845 | if (old_request->body_reader != NULL) { |
846 | new_request->body_reader = old_request->body_reader; | |
847 | old_request->body_reader = NULL; | |
848 | debugs(0,0,HERE << "setting body_reader = NULL for request " << old_request); | |
62e76326 | 849 | } |
850 | ||
851 | new_request->content_length = old_request->content_length; | |
abb929f0 | 852 | new_request->extacl_user = old_request->extacl_user; |
853 | new_request->extacl_passwd = old_request->extacl_passwd; | |
62e76326 | 854 | new_request->flags.proxy_keepalive = old_request->flags.proxy_keepalive; |
6dd9f4bd | 855 | HTTPMSGUNLOCK(old_request); |
856 | http->request = HTTPMSGLOCK(new_request); | |
edce4d98 | 857 | } |
62e76326 | 858 | |
edce4d98 | 859 | /* FIXME PIPELINE: This is innacurate during pipelining */ |
62e76326 | 860 | |
a2ac85d9 | 861 | if (http->getConn().getRaw() != NULL) |
98242069 | 862 | fd_note(http->getConn()->fd, http->uri); |
62e76326 | 863 | |
c8be6d7b | 864 | assert(http->uri); |
62e76326 | 865 | |
de31d06f | 866 | http->doCallouts(); |
edce4d98 | 867 | } |
868 | ||
869 | void | |
8e2745f4 | 870 | ClientRequestContext::checkNoCache() |
edce4d98 | 871 | { |
de31d06f | 872 | acl_checklist = clientAclChecklistCreate(Config.accessList.noCache, http); |
57abaac0 | 873 | acl_checklist->nonBlockingCheck(checkNoCacheDoneWrapper, this); |
edce4d98 | 874 | } |
875 | ||
de31d06f | 876 | static void |
877 | checkNoCacheDoneWrapper(int answer, void *data) | |
edce4d98 | 878 | { |
de31d06f | 879 | ClientRequestContext *calloutContext = (ClientRequestContext *) data; |
e4a67a80 | 880 | |
de31d06f | 881 | if (!calloutContext->httpStateIsValid()) |
882 | return; | |
883 | ||
884 | calloutContext->checkNoCacheDone(answer); | |
8e2745f4 | 885 | } |
4fb35c3c | 886 | |
8e2745f4 | 887 | void |
888 | ClientRequestContext::checkNoCacheDone(int answer) | |
62e76326 | 889 | { |
8e2745f4 | 890 | acl_checklist = NULL; |
de31d06f | 891 | http->request->flags.cachable = answer; |
892 | http->doCallouts(); | |
edce4d98 | 893 | } |
894 | ||
69660be0 | 895 | /* |
896 | * Identify requests that do not go through the store and client side stream | |
897 | * and forward them to the appropriate location. All other requests, request | |
898 | * them. | |
edce4d98 | 899 | */ |
900 | void | |
8e2745f4 | 901 | ClientHttpRequest::processRequest() |
edce4d98 | 902 | { |
edce4d98 | 903 | debug(85, 4) ("clientProcessRequest: %s '%s'\n", |
62e76326 | 904 | RequestMethodStr[request->method], uri); |
905 | ||
2baf58c3 | 906 | if (request->method == METHOD_CONNECT && !redirect.status) { |
62e76326 | 907 | logType = LOG_TCP_MISS; |
908 | sslStart(this, &out.size, &al.http.code); | |
909 | return; | |
edce4d98 | 910 | } |
62e76326 | 911 | |
8e2745f4 | 912 | httpStart(); |
913 | } | |
914 | ||
915 | void | |
916 | ClientHttpRequest::httpStart() | |
917 | { | |
559da936 | 918 | PROF_start(httpStart); |
8e2745f4 | 919 | logType = LOG_TAG_NONE; |
920 | debug(85, 4) ("ClientHttpRequest::httpStart: %s for '%s'\n", | |
62e76326 | 921 | log_tags[logType], uri); |
edce4d98 | 922 | /* no one should have touched this */ |
8e2745f4 | 923 | assert(out.offset == 0); |
edce4d98 | 924 | /* Use the Stream Luke */ |
8e2745f4 | 925 | clientStreamNode *node = (clientStreamNode *)client_stream.tail->data; |
926 | clientStreamRead(node, this, node->readBuffer); | |
559da936 | 927 | PROF_stop(httpStart); |
edce4d98 | 928 | } |
0655fa4d | 929 | |
930 | bool | |
931 | ClientHttpRequest::gotEnough() const | |
932 | { | |
86a2f789 | 933 | /** TODO: should be querying the stream. */ |
0655fa4d | 934 | int contentLength = |
06a5ae20 | 935 | memObject()->getReply()->bodySize(request->method); |
0655fa4d | 936 | assert(contentLength >= 0); |
937 | ||
938 | if (out.offset < contentLength) | |
939 | return false; | |
940 | ||
941 | return true; | |
942 | } | |
943 | ||
b51aec66 | 944 | void |
945 | ClientHttpRequest::maxReplyBodySize(ssize_t clen) | |
946 | { | |
947 | maxReplyBodySize_ = clen; | |
948 | } | |
949 | ||
950 | ssize_t | |
951 | ClientHttpRequest::maxReplyBodySize() const | |
952 | { | |
953 | return maxReplyBodySize_; | |
954 | } | |
955 | ||
956 | bool | |
957 | ClientHttpRequest::isReplyBodyTooLarge(ssize_t clen) const | |
958 | { | |
959 | if (0 == maxReplyBodySize()) | |
960 | return 0; /* disabled */ | |
961 | ||
962 | if (clen < 0) | |
963 | return 0; /* unknown */ | |
964 | ||
965 | return clen > maxReplyBodySize(); | |
966 | } | |
86a2f789 | 967 | |
968 | void | |
969 | ClientHttpRequest::storeEntry(StoreEntry *newEntry) | |
970 | { | |
971 | entry_ = newEntry; | |
972 | } | |
973 | ||
0976f8db | 974 | void |
975 | ClientHttpRequest::loggingEntry(StoreEntry *newEntry) | |
976 | { | |
977 | if (loggingEntry_) | |
97b5e68f | 978 | loggingEntry_->unlock(); |
0976f8db | 979 | |
980 | loggingEntry_ = newEntry; | |
981 | ||
982 | if (loggingEntry_) | |
34266cde | 983 | loggingEntry_->lock() |
984 | ||
985 | ; | |
0976f8db | 986 | } |
86a2f789 | 987 | |
de31d06f | 988 | /* |
989 | * doCallouts() - This function controls the order of "callout" | |
990 | * executions, including non-blocking access control checks, the | |
991 | * redirector, and ICAP. Previously, these callouts were chained | |
992 | * together such that "clientAccessCheckDone()" would call | |
993 | * "clientRedirectStart()" and so on. | |
994 | * | |
995 | * The ClientRequestContext (aka calloutContext) class holds certain | |
996 | * state data for the callout/callback operations. Previously | |
997 | * ClientHttpRequest would sort of hand off control to ClientRequestContext | |
998 | * for a short time. ClientRequestContext would then delete itself | |
999 | * and pass control back to ClientHttpRequest when all callouts | |
1000 | * were finished. | |
1001 | * | |
1002 | * This caused some problems for ICAP because we want to make the | |
1003 | * ICAP callout after checking ACLs, but before checking the no_cache | |
1004 | * list. We can't stuff the ICAP state into the ClientRequestContext | |
1005 | * class because we still need the ICAP state after ClientRequestContext | |
1006 | * goes away. | |
1007 | * | |
1008 | * Note that ClientRequestContext is created before the first call | |
1009 | * to doCallouts(). | |
1010 | * | |
1011 | * If one of the callouts notices that ClientHttpRequest is no | |
1012 | * longer valid, it should call cbdataReferenceDone() so that | |
1013 | * ClientHttpRequest's reference count goes to zero and it will get | |
1014 | * deleted. ClientHttpRequest will then delete ClientRequestContext. | |
1015 | * | |
1016 | * Note that we set the _done flags here before actually starting | |
1017 | * the callout. This is strictly for convenience. | |
1018 | */ | |
1019 | ||
1020 | void | |
1021 | ClientHttpRequest::doCallouts() | |
1022 | { | |
1023 | assert(calloutContext); | |
1024 | ||
1025 | if (!calloutContext->http_access_done) { | |
57abaac0 | 1026 | calloutContext->http_access_done = true; |
de31d06f | 1027 | calloutContext->clientAccessCheck(); |
1028 | return; | |
1029 | } | |
1030 | ||
1031 | #if ICAP_CLIENT | |
ab7ac359 | 1032 | if (TheICAPConfig.onoff && !calloutContext->icap_acl_check_done) { |
57abaac0 | 1033 | calloutContext->icap_acl_check_done = true; |
de31d06f | 1034 | calloutContext->icapAccessCheck(); |
1035 | return; | |
1036 | } | |
1037 | ||
1038 | #endif | |
1039 | ||
1040 | if (!calloutContext->redirect_done) { | |
57abaac0 | 1041 | calloutContext->redirect_done = true; |
de31d06f | 1042 | assert(calloutContext->redirect_state == REDIRECT_NONE); |
1043 | ||
1044 | if (Config.Program.redirect) { | |
1045 | calloutContext->redirect_state = REDIRECT_PENDING; | |
1046 | calloutContext->clientRedirectStart(); | |
1047 | return; | |
1048 | } | |
1049 | } | |
1050 | ||
57abaac0 | 1051 | if (!calloutContext->interpreted_req_hdrs) { |
1052 | calloutContext->interpreted_req_hdrs = 1; | |
1053 | clientInterpretRequestHeaders(this); | |
1054 | } | |
1055 | ||
de31d06f | 1056 | if (!calloutContext->no_cache_done) { |
57abaac0 | 1057 | calloutContext->no_cache_done = true; |
de31d06f | 1058 | |
1059 | if (Config.accessList.noCache && request->flags.cachable) { | |
1060 | calloutContext->checkNoCache(); | |
1061 | return; | |
1062 | } | |
1063 | } | |
1064 | ||
1065 | cbdataReferenceDone(calloutContext->http); | |
1066 | delete calloutContext; | |
1067 | calloutContext = NULL; | |
de31d06f | 1068 | #if HEADERS_LOG |
1069 | ||
1070 | headersLog(0, 1, request->method, request); | |
1071 | #endif | |
1072 | ||
1073 | processRequest(); | |
1074 | } | |
1075 | ||
86a2f789 | 1076 | #ifndef _USE_INLINE_ |
1077 | #include "client_side_request.cci" | |
1078 | #endif | |
de31d06f | 1079 | |
1080 | #if ICAP_CLIENT | |
1081 | /* | |
1082 | * Initiate an ICAP transaction. Return 0 if all is well, or -1 upon error. | |
1083 | * Caller will handle error condition by generating a Squid error message | |
1084 | * or take other action. | |
1085 | */ | |
1086 | int | |
1087 | ClientHttpRequest::doIcap(ICAPServiceRep::Pointer service) | |
1088 | { | |
0b86805b | 1089 | debugs(85, 3, HERE << this << " ClientHttpRequest::doIcap() called"); |
de31d06f | 1090 | assert(NULL == icap); |
1091 | icap = new ICAPClientReqmodPrecache(service); | |
de31d06f | 1092 | icap->startReqMod(this, request); |
3b299123 | 1093 | |
1094 | if (request->body_reader == NULL) { | |
0b86805b | 1095 | debugs(32, 3, HERE << "client request hasnt body..."); |
3b299123 | 1096 | icap->doneSending(); |
1097 | ||
1098 | } | |
1099 | ||
de31d06f | 1100 | return 0; |
1101 | } | |
1102 | ||
3b299123 | 1103 | /* |
1104 | * icapSendRequestBodyWrapper | |
1105 | * | |
1106 | * A callback wrapper for ::icapSendRequestBody() | |
1107 | * | |
1108 | * icapSendRequestBodyWrapper is of type CBCB | |
1109 | */ | |
1110 | void | |
1111 | ClientHttpRequest::icapSendRequestBodyWrapper(MemBuf &mb, void *data) | |
1112 | { | |
1113 | ClientHttpRequest *chr = static_cast<ClientHttpRequest*>(data); | |
1114 | chr->icapSendRequestBody(mb); | |
1115 | } | |
1116 | ||
1117 | ||
1118 | /* | |
1119 | * icapSendRequestBody | |
1120 | * | |
1121 | * Sends some chunk of a request body to the ICAP side. Must make sure | |
1122 | * that the ICAP-side can accept the data we have. If there is more | |
1123 | * body data to read, then schedule another BodyReader callback. | |
1124 | */ | |
1125 | void | |
1126 | ClientHttpRequest::icapSendRequestBody(MemBuf &mb) | |
1127 | { | |
1128 | ssize_t size_to_send = mb.contentSize(); | |
1129 | debugs(32,3,HERE << "have " << mb.contentSize() << " bytes in mb"); | |
1130 | ||
1131 | if (size_to_send == 0) { | |
1132 | /* | |
1133 | * An error occurred during this transaction. Tell ICAP that we're done. | |
1134 | */ | |
1135 | ||
1136 | if (icap) | |
1137 | icap->doneSending(); | |
1138 | ||
1139 | return; | |
1140 | } | |
1141 | ||
1142 | debugs(32,3,HERE << "icap->potentialSpaceSize() = " << icap->potentialSpaceSize()); | |
1143 | ||
1144 | if (size_to_send > icap->potentialSpaceSize()) | |
1145 | size_to_send = icap->potentialSpaceSize(); | |
1146 | ||
1147 | if (size_to_send) { | |
1148 | debugs(32,3,HERE << "sending " << size_to_send << " body bytes to ICAP"); | |
1149 | StoreIOBuffer sbuf(size_to_send, 0, mb.content()); | |
1150 | icap->sendMoreData(sbuf); | |
1151 | icap->body_reader->consume(size_to_send); | |
1152 | icap->body_reader->bytes_read += size_to_send; | |
1153 | debugs(32,3," HTTP client body bytes_read=" << icap->body_reader->bytes_read); | |
1154 | } else { | |
c99de607 | 1155 | debugs(32,2,HERE << "cannot send body data to ICAP"); |
1156 | debugs(32,2,HERE << "\tBodyReader MemBuf has " << mb.contentSize()); | |
1157 | debugs(32,2,HERE << "\tbut icap->potentialSpaceSize() is " << icap->potentialSpaceSize()); | |
3b299123 | 1158 | return; |
1159 | } | |
1160 | ||
1161 | /* | |
1162 | * If we sent some data this time, and there is more data to | |
1163 | * read, then schedule another read request via BodyReader. | |
1164 | */ | |
1165 | if (size_to_send && icap->body_reader->remaining()) { | |
1166 | debugs(32,3,HERE << "calling body_reader->read()"); | |
1167 | icap->body_reader->read(icapSendRequestBodyWrapper, this); | |
1168 | } else { | |
1169 | debugs(32,3,HERE << "No more request body bytes to send"); | |
1170 | icap->doneSending(); | |
1171 | } | |
1172 | } | |
1173 | ||
de31d06f | 1174 | /* |
1175 | * Called by ICAPAnchor when it has space available for us. | |
1176 | */ | |
1177 | void | |
1178 | ClientHttpRequest::icapSpaceAvailable() | |
1179 | { | |
3b299123 | 1180 | debugs(85,3,HERE << this << " ClientHttpRequest::icapSpaceAvailable() called\n"); |
1181 | ||
1182 | if (request->body_reader != NULL && icap->body_reader == NULL) { | |
1183 | debugs(32,3,HERE << "reassigning HttpRequest->body_reader to ICAP"); | |
1184 | /* | |
1185 | * ICAP hooks on to the BodyReader that gets data from | |
1186 | * ConnStateData. We'll make a new BodyReader that | |
1187 | * HttpStateData can use if the adapted response has a | |
1188 | * request body. See ICAPClientReqmodPrecache::noteSourceStart() | |
1189 | */ | |
1190 | icap->body_reader = request->body_reader; | |
1191 | request->body_reader = NULL; | |
1192 | } | |
1193 | ||
1194 | if (icap->body_reader == NULL) | |
1195 | return; | |
1196 | ||
1197 | if (icap->body_reader->callbackPending()) | |
1198 | return; | |
1199 | ||
1200 | debugs(32,3,HERE << "Calling read() for body data"); | |
1201 | ||
1202 | icap->body_reader->read(icapSendRequestBodyWrapper, this); | |
de31d06f | 1203 | } |
1204 | ||
1205 | void | |
1206 | ClientHttpRequest::takeAdaptedHeaders(HttpMsg *msg) | |
1207 | { | |
1208 | debug(85,3)("ClientHttpRequest::takeAdaptedHeaders() called\n"); | |
1209 | assert(cbdataReferenceValid(this)); // indicates bug | |
1210 | ||
b044675d | 1211 | if (HttpRequest *new_req = dynamic_cast<HttpRequest*>(msg)) { |
200ac359 | 1212 | /* |
1213 | * Replace the old request with the new request. First, | |
1214 | * Move the "body_connection" over, then unlink old and | |
1215 | * link new to the http state. | |
1216 | */ | |
6dd9f4bd | 1217 | HTTPMSGUNLOCK(request); |
1218 | request = HTTPMSGLOCK(new_req); | |
200ac359 | 1219 | /* |
1220 | * Store the new URI for logging | |
1221 | */ | |
1222 | xfree(uri); | |
1223 | uri = xstrdup(urlCanonical(request)); | |
1224 | setLogUri(this, urlCanonicalClean(request)); | |
1225 | assert(request->method); | |
b044675d | 1226 | } else if (HttpReply *new_rep = dynamic_cast<HttpReply*>(msg)) { |
1227 | debugs(85,3,HERE << "REQMOD reply is HTTP reply"); | |
1228 | ||
1229 | clientStreamNode *node = (clientStreamNode *)client_stream.tail->prev->data; | |
1230 | clientReplyContext *repContext = dynamic_cast<clientReplyContext *>(node->data.getRaw()); | |
1231 | repContext->createStoreEntry(request->method, request->flags); | |
1232 | ||
1233 | EBIT_CLR(storeEntry()->flags, ENTRY_FWD_HDR_WAIT); | |
1234 | request_satisfaction_mode = true; | |
1235 | request_satisfaction_offset = 0; | |
1236 | storeEntry()->replaceHttpReply(new_rep); | |
1237 | clientGetMoreData(node, this); | |
200ac359 | 1238 | } |
de31d06f | 1239 | |
b044675d | 1240 | if (!request_satisfaction_mode) |
1241 | doCallouts(); | |
de31d06f | 1242 | |
1243 | debug(85,3)("ClientHttpRequest::takeAdaptedHeaders() finished\n"); | |
1244 | } | |
1245 | ||
1246 | void | |
1247 | ClientHttpRequest::takeAdaptedBody(MemBuf *buf) | |
1248 | { | |
1249 | debug(85,3)("ClientHttpRequest::takeAdaptedBody() called\n"); | |
b044675d | 1250 | |
1251 | if (request_satisfaction_mode) { | |
1252 | storeEntry()->write(StoreIOBuffer(buf, request_satisfaction_offset)); | |
1253 | request_satisfaction_offset += buf->contentSize(); | |
1254 | buf->consume(buf->contentSize()); // consume everything written | |
310afc6c | 1255 | } else { |
1256 | debug(85,0)("Unexpected call to takeAdaptedBody when " | |
1257 | "not in request_satisfaction_mode"); | |
b044675d | 1258 | } |
de31d06f | 1259 | } |
1260 | ||
1261 | void | |
1262 | ClientHttpRequest::doneAdapting() | |
1263 | { | |
1264 | debug(85,3)("ClientHttpRequest::doneAdapting() called\n"); | |
1265 | } | |
1266 | ||
1267 | void | |
1268 | ClientHttpRequest::abortAdapting() | |
1269 | { | |
1270 | debug(85,3)("ClientHttpRequest::abortAdapting() called\n"); | |
1271 | ||
1272 | if ((NULL == storeEntry()) || storeEntry()->isEmpty()) { | |
1273 | debug(85,3)("WARNING: ICAP REQMOD callout failed, proceeding with original request\n"); | |
3b299123 | 1274 | |
1275 | if (calloutContext) | |
1276 | doCallouts(); | |
1277 | ||
de31d06f | 1278 | #if ICAP_HARD_ERROR |
1279 | ||
1280 | clientStreamNode *node = (clientStreamNode *)client_stream.tail->prev->data; | |
3b299123 | 1281 | |
de31d06f | 1282 | clientReplyContext *repContext = dynamic_cast<clientReplyContext *>(node->data.getRaw()); |
3b299123 | 1283 | |
de31d06f | 1284 | assert (repContext); |
3b299123 | 1285 | |
de31d06f | 1286 | // Note if this code is ever used, clientBuildError() should be modified to |
1287 | // accept an errno arg | |
1288 | repContext->setReplyToError(ERR_ICAP_FAILURE, HTTP_INTERNAL_SERVER_ERROR, | |
1289 | request->method, NULL, | |
1290 | getConn().getRaw() != NULL ? &getConn()->peer.sin_addr : &no_addr, request, | |
1291 | NULL, getConn().getRaw() != NULL | |
1292 | && getConn()->auth_user_request ? getConn()-> | |
1293 | auth_user_request : request->auth_user_request, errno); | |
3b299123 | 1294 | |
de31d06f | 1295 | node = (clientStreamNode *)client_stream.tail->data; |
3b299123 | 1296 | |
de31d06f | 1297 | clientStreamRead(node, this, node->readBuffer); |
3b299123 | 1298 | |
de31d06f | 1299 | #endif |
1300 | ||
1301 | return; | |
1302 | } | |
1303 | ||
1304 | debug(0,0)("write me at %s:%d\n", __FILE__,__LINE__); | |
1305 | } | |
1306 | ||
1307 | #endif |