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edce4d98 | 1 | |
2 | /* | |
262a0e14 | 3 | * $Id$ |
26ac0430 | 4 | * |
ae45c4de | 5 | * DEBUG: section 85 Client-side Request Routines |
6 | * AUTHOR: Robert Collins (Originally Duane Wessels in client_side.c) | |
26ac0430 | 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: | |
26ac0430 | 39 | * |
69660be0 | 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" | |
c0941a6a AR |
46 | #include "acl/FilledChecklist.h" |
47 | #include "acl/Gadgets.h" | |
a83c6ed6 | 48 | #if USE_ADAPTATION |
62c7f90e | 49 | #include "adaptation/AccessCheck.h" |
1adcebc3 | 50 | #include "adaptation/Answer.h" |
a22e6cd3 | 51 | #include "adaptation/Iterator.h" |
abd4b611 | 52 | #include "adaptation/Service.h" |
3ff65596 AR |
53 | #if ICAP_CLIENT |
54 | #include "adaptation/icap/History.h" | |
55 | #endif | |
de31d06f | 56 | #endif |
2f1431ea | 57 | #if USE_AUTH |
27bc2077 | 58 | #include "auth/UserRequest.h" |
2f1431ea | 59 | #endif |
27bc2077 AJ |
60 | #include "clientStream.h" |
61 | #include "client_side.h" | |
62 | #include "client_side_reply.h" | |
63 | #include "client_side_request.h" | |
64 | #include "ClientRequestContext.h" | |
ec41b64c | 65 | #include "comm/Write.h" |
27bc2077 AJ |
66 | #include "compat/inet_pton.h" |
67 | #include "fde.h" | |
68 | #include "HttpReply.h" | |
69 | #include "HttpRequest.h" | |
425de4c8 | 70 | #include "ip/QosConfig.h" |
8432e271 | 71 | #include "log/Tokens.h" |
27bc2077 AJ |
72 | #include "MemObject.h" |
73 | #include "ProtoPort.h" | |
74 | #include "Store.h" | |
75 | #include "SquidTime.h" | |
76 | #include "wordlist.h" | |
64b66b76 | 77 | #include "err_detail_type.h" |
4db984be CT |
78 | #if USE_SSL |
79 | #include "ssl/support.h" | |
80 | #endif | |
3ff65596 AR |
81 | |
82 | ||
edce4d98 | 83 | #if LINGERING_CLOSE |
84 | #define comm_close comm_lingering_close | |
85 | #endif | |
86 | ||
87 | static const char *const crlf = "\r\n"; | |
88 | ||
609c620a | 89 | #if FOLLOW_X_FORWARDED_FOR |
3d674977 AJ |
90 | static void |
91 | clientFollowXForwardedForCheck(int answer, void *data); | |
609c620a | 92 | #endif /* FOLLOW_X_FORWARDED_FOR */ |
3d674977 | 93 | |
8e2745f4 | 94 | CBDATA_CLASS_INIT(ClientRequestContext); |
95 | ||
96 | void * | |
97 | ClientRequestContext::operator new (size_t size) | |
98 | { | |
99 | assert (size == sizeof(ClientRequestContext)); | |
100 | CBDATA_INIT_TYPE(ClientRequestContext); | |
101 | ClientRequestContext *result = cbdataAlloc(ClientRequestContext); | |
aa625860 | 102 | return result; |
8e2745f4 | 103 | } |
62e76326 | 104 | |
8e2745f4 | 105 | void |
106 | ClientRequestContext::operator delete (void *address) | |
107 | { | |
108 | ClientRequestContext *t = static_cast<ClientRequestContext *>(address); | |
aa625860 | 109 | cbdataFree(t); |
8e2745f4 | 110 | } |
111 | ||
edce4d98 | 112 | /* Local functions */ |
edce4d98 | 113 | /* other */ |
de31d06f | 114 | static void clientAccessCheckDoneWrapper(int, void *); |
e0c0d54c CT |
115 | #if USE_SSL |
116 | static void sslBumpAccessCheckDoneWrapper(int, void *); | |
117 | #endif | |
59a1efb2 | 118 | static int clientHierarchical(ClientHttpRequest * http); |
119 | static void clientInterpretRequestHeaders(ClientHttpRequest * http); | |
de31d06f | 120 | static RH clientRedirectDoneWrapper; |
121 | static PF checkNoCacheDoneWrapper; | |
e6ccf245 | 122 | extern "C" CSR clientGetMoreData; |
123 | extern "C" CSS clientReplyStatus; | |
124 | extern "C" CSD clientReplyDetach; | |
528b2c61 | 125 | static void checkFailureRatio(err_type, hier_code); |
edce4d98 | 126 | |
8e2745f4 | 127 | ClientRequestContext::~ClientRequestContext() |
128 | { | |
de31d06f | 129 | /* |
a546b04b | 130 | * Release our "lock" on our parent, ClientHttpRequest, if we |
131 | * still have one | |
de31d06f | 132 | */ |
a546b04b | 133 | |
134 | if (http) | |
135 | cbdataReferenceDone(http); | |
62e76326 | 136 | |
5f8252d2 | 137 | debugs(85,3, HERE << this << " ClientRequestContext destructed"); |
8e2745f4 | 138 | } |
139 | ||
4e2eb5c3 | 140 | ClientRequestContext::ClientRequestContext(ClientHttpRequest *anHttp) : http(cbdataReference(anHttp)), acl_checklist (NULL), redirect_state (REDIRECT_NONE) |
edce4d98 | 141 | { |
57abaac0 | 142 | http_access_done = false; |
143 | redirect_done = false; | |
144 | no_cache_done = false; | |
145 | interpreted_req_hdrs = false; | |
e0c0d54c CT |
146 | #if USE_SSL |
147 | sslBumpCheckDone = false; | |
148 | #endif | |
0b86805b | 149 | debugs(85,3, HERE << this << " ClientRequestContext constructed"); |
edce4d98 | 150 | } |
151 | ||
528b2c61 | 152 | CBDATA_CLASS_INIT(ClientHttpRequest); |
8e2745f4 | 153 | |
528b2c61 | 154 | void * |
155 | ClientHttpRequest::operator new (size_t size) | |
156 | { | |
157 | assert (size == sizeof (ClientHttpRequest)); | |
158 | CBDATA_INIT_TYPE(ClientHttpRequest); | |
159 | ClientHttpRequest *result = cbdataAlloc(ClientHttpRequest); | |
aa625860 | 160 | return result; |
528b2c61 | 161 | } |
162 | ||
62e76326 | 163 | void |
528b2c61 | 164 | ClientHttpRequest::operator delete (void *address) |
165 | { | |
aa625860 | 166 | ClientHttpRequest *t = static_cast<ClientHttpRequest *>(address); |
167 | cbdataFree(t); | |
528b2c61 | 168 | } |
169 | ||
26ac0430 | 170 | ClientHttpRequest::ClientHttpRequest(ConnStateData * aConn) : |
a83c6ed6 | 171 | #if USE_ADAPTATION |
26ac0430 | 172 | AsyncJob("ClientHttpRequest"), |
1cf238db | 173 | #endif |
26ac0430 | 174 | loggingEntry_(NULL) |
528b2c61 | 175 | { |
1cf238db | 176 | start_time = current_time; |
a0355e95 | 177 | setConn(aConn); |
178 | dlinkAdd(this, &active, &ClientActiveRequests); | |
a83c6ed6 | 179 | #if USE_ADAPTATION |
b044675d | 180 | request_satisfaction_mode = false; |
181 | #endif | |
e0c0d54c CT |
182 | #if USE_SSL |
183 | sslBumpNeed = needUnknown; | |
184 | #endif | |
528b2c61 | 185 | } |
186 | ||
0655fa4d | 187 | /* |
188 | * returns true if client specified that the object must come from the cache | |
189 | * without contacting origin server | |
190 | */ | |
191 | bool | |
192 | ClientHttpRequest::onlyIfCached()const | |
193 | { | |
194 | assert(request); | |
195 | return request->cache_control && | |
196 | EBIT_TEST(request->cache_control->mask, CC_ONLY_IF_CACHED); | |
197 | } | |
198 | ||
528b2c61 | 199 | /* |
200 | * This function is designed to serve a fairly specific purpose. | |
201 | * Occasionally our vBNS-connected caches can talk to each other, but not | |
202 | * the rest of the world. Here we try to detect frequent failures which | |
203 | * make the cache unusable (e.g. DNS lookup and connect() failures). If | |
204 | * the failure:success ratio goes above 1.0 then we go into "hit only" | |
205 | * mode where we only return UDP_HIT or UDP_MISS_NOFETCH. Neighbors | |
206 | * will only fetch HITs from us if they are using the ICP protocol. We | |
207 | * stay in this mode for 5 minutes. | |
26ac0430 | 208 | * |
528b2c61 | 209 | * Duane W., Sept 16, 1996 |
210 | */ | |
211 | ||
212 | #define FAILURE_MODE_TIME 300 | |
213 | ||
214 | static void | |
215 | checkFailureRatio(err_type etype, hier_code hcode) | |
216 | { | |
217 | static double magic_factor = 100.0; | |
218 | double n_good; | |
219 | double n_bad; | |
62e76326 | 220 | |
528b2c61 | 221 | if (hcode == HIER_NONE) |
62e76326 | 222 | return; |
223 | ||
528b2c61 | 224 | n_good = magic_factor / (1.0 + request_failure_ratio); |
62e76326 | 225 | |
528b2c61 | 226 | n_bad = magic_factor - n_good; |
62e76326 | 227 | |
528b2c61 | 228 | switch (etype) { |
62e76326 | 229 | |
528b2c61 | 230 | case ERR_DNS_FAIL: |
62e76326 | 231 | |
528b2c61 | 232 | case ERR_CONNECT_FAIL: |
3712be3f | 233 | case ERR_SECURE_CONNECT_FAIL: |
62e76326 | 234 | |
528b2c61 | 235 | case ERR_READ_ERROR: |
62e76326 | 236 | n_bad++; |
237 | break; | |
238 | ||
528b2c61 | 239 | default: |
62e76326 | 240 | n_good++; |
528b2c61 | 241 | } |
62e76326 | 242 | |
528b2c61 | 243 | request_failure_ratio = n_bad / n_good; |
62e76326 | 244 | |
528b2c61 | 245 | if (hit_only_mode_until > squid_curtime) |
62e76326 | 246 | return; |
247 | ||
528b2c61 | 248 | if (request_failure_ratio < 1.0) |
62e76326 | 249 | return; |
250 | ||
bf8fe701 | 251 | debugs(33, 0, "Failure Ratio at "<< std::setw(4)<< |
252 | std::setprecision(3) << request_failure_ratio); | |
62e76326 | 253 | |
bf8fe701 | 254 | debugs(33, 0, "Going into hit-only-mode for " << |
255 | FAILURE_MODE_TIME / 60 << " minutes..."); | |
62e76326 | 256 | |
528b2c61 | 257 | hit_only_mode_until = squid_curtime + FAILURE_MODE_TIME; |
62e76326 | 258 | |
528b2c61 | 259 | request_failure_ratio = 0.8; /* reset to something less than 1.0 */ |
260 | } | |
261 | ||
262 | ClientHttpRequest::~ClientHttpRequest() | |
263 | { | |
bf8fe701 | 264 | debugs(33, 3, "httpRequestFree: " << uri); |
72bdee4c | 265 | PROF_start(httpRequestFree); |
62e76326 | 266 | |
5f8252d2 | 267 | // Even though freeResources() below may destroy the request, |
268 | // we no longer set request->body_pipe to NULL here | |
269 | // because we did not initiate that pipe (ConnStateData did) | |
62e76326 | 270 | |
528b2c61 | 271 | /* the ICP check here was erroneous |
26ac0430 | 272 | * - StoreEntry::releaseRequest was always called if entry was valid |
528b2c61 | 273 | */ |
274 | assert(logType < LOG_TYPE_MAX); | |
9ce7856a | 275 | |
528b2c61 | 276 | logRequest(); |
9ce7856a | 277 | |
0976f8db | 278 | loggingEntry(NULL); |
279 | ||
528b2c61 | 280 | if (request) |
62e76326 | 281 | checkFailureRatio(request->errType, al.hier.code); |
282 | ||
528b2c61 | 283 | freeResources(); |
62e76326 | 284 | |
a83c6ed6 AR |
285 | #if USE_ADAPTATION |
286 | announceInitiatorAbort(virginHeadSource); | |
9d4d7c5e | 287 | |
a83c6ed6 AR |
288 | if (adaptedBodySource != NULL) |
289 | stopConsumingFrom(adaptedBodySource); | |
de31d06f | 290 | #endif |
9ce7856a | 291 | |
de31d06f | 292 | if (calloutContext) |
293 | delete calloutContext; | |
294 | ||
26ac0430 AJ |
295 | if (conn_) |
296 | cbdataReferenceDone(conn_); | |
1cf238db | 297 | |
528b2c61 | 298 | /* moving to the next connection is handled by the context free */ |
299 | dlinkDelete(&active, &ClientActiveRequests); | |
9ce7856a | 300 | |
72bdee4c | 301 | PROF_stop(httpRequestFree); |
528b2c61 | 302 | } |
62e76326 | 303 | |
11992b6f AJ |
304 | /** |
305 | * Create a request and kick it off | |
306 | * | |
307 | * \retval 0 success | |
308 | * \retval -1 failure | |
309 | * | |
69660be0 | 310 | * TODO: Pass in the buffers to be used in the inital Read request, as they are |
311 | * determined by the user | |
edce4d98 | 312 | */ |
11992b6f | 313 | int |
60745f24 | 314 | clientBeginRequest(const HttpRequestMethod& method, char const *url, CSCB * streamcallback, |
0655fa4d | 315 | CSD * streamdetach, ClientStreamData streamdata, HttpHeader const *header, |
62e76326 | 316 | char *tailbuf, size_t taillen) |
edce4d98 | 317 | { |
318 | size_t url_sz; | |
a0355e95 | 319 | ClientHttpRequest *http = new ClientHttpRequest(NULL); |
190154cf | 320 | HttpRequest *request; |
528b2c61 | 321 | StoreIOBuffer tempBuffer; |
1cf238db | 322 | http->start_time = current_time; |
edce4d98 | 323 | /* this is only used to adjust the connection offset in client_side.c */ |
324 | http->req_sz = 0; | |
c8be6d7b | 325 | tempBuffer.length = taillen; |
326 | tempBuffer.data = tailbuf; | |
edce4d98 | 327 | /* client stream setup */ |
328 | clientStreamInit(&http->client_stream, clientGetMoreData, clientReplyDetach, | |
0655fa4d | 329 | clientReplyStatus, new clientReplyContext(http), streamcallback, |
62e76326 | 330 | streamdetach, streamdata, tempBuffer); |
edce4d98 | 331 | /* make it visible in the 'current acctive requests list' */ |
edce4d98 | 332 | /* Set flags */ |
a46d2c0e | 333 | /* internal requests only makes sense in an |
334 | * accelerator today. TODO: accept flags ? */ | |
335 | http->flags.accel = 1; | |
edce4d98 | 336 | /* allow size for url rewriting */ |
337 | url_sz = strlen(url) + Config.appendDomainLen + 5; | |
e6ccf245 | 338 | http->uri = (char *)xcalloc(url_sz, 1); |
edce4d98 | 339 | strcpy(http->uri, url); |
340 | ||
c21ad0f5 | 341 | if ((request = HttpRequest::CreateFromUrlAndMethod(http->uri, method)) == NULL) { |
bf8fe701 | 342 | debugs(85, 5, "Invalid URL: " << http->uri); |
62e76326 | 343 | return -1; |
edce4d98 | 344 | } |
62e76326 | 345 | |
69660be0 | 346 | /* |
11992b6f | 347 | * now update the headers in request with our supplied headers. urlParse |
69660be0 | 348 | * should return a blank header set, but we use Update to be sure of |
349 | * correctness. | |
edce4d98 | 350 | */ |
351 | if (header) | |
a9925b40 | 352 | request->header.update(header, NULL); |
62e76326 | 353 | |
edce4d98 | 354 | http->log_uri = xstrdup(urlCanonicalClean(request)); |
62e76326 | 355 | |
edce4d98 | 356 | /* http struct now ready */ |
357 | ||
69660be0 | 358 | /* |
359 | * build new header list *? TODO | |
edce4d98 | 360 | */ |
361 | request->flags.accelerated = http->flags.accel; | |
62e76326 | 362 | |
a46d2c0e | 363 | request->flags.internalclient = 1; |
364 | ||
365 | /* this is an internally created | |
366 | * request, not subject to acceleration | |
367 | * target overrides */ | |
69660be0 | 368 | /* |
369 | * FIXME? Do we want to detect and handle internal requests of internal | |
370 | * objects ? | |
371 | */ | |
edce4d98 | 372 | |
373 | /* Internally created requests cannot have bodies today */ | |
374 | request->content_length = 0; | |
62e76326 | 375 | |
cc192b50 | 376 | request->client_addr.SetNoAddr(); |
62e76326 | 377 | |
3d674977 AJ |
378 | #if FOLLOW_X_FORWARDED_FOR |
379 | request->indirect_client_addr.SetNoAddr(); | |
380 | #endif /* FOLLOW_X_FORWARDED_FOR */ | |
26ac0430 | 381 | |
cc192b50 | 382 | request->my_addr.SetNoAddr(); /* undefined for internal requests */ |
62e76326 | 383 | |
cc192b50 | 384 | request->my_addr.SetPort(0); |
62e76326 | 385 | |
3872be7c AJ |
386 | /* Our version is HTTP/1.1 */ |
387 | HttpVersion http_ver(1,1); | |
edce4d98 | 388 | request->http_ver = http_ver; |
62e76326 | 389 | |
6dd9f4bd | 390 | http->request = HTTPMSGLOCK(request); |
edce4d98 | 391 | |
392 | /* optional - skip the access check ? */ | |
de31d06f | 393 | http->calloutContext = new ClientRequestContext(http); |
394 | ||
57abaac0 | 395 | http->calloutContext->http_access_done = false; |
de31d06f | 396 | |
57abaac0 | 397 | http->calloutContext->redirect_done = true; |
de31d06f | 398 | |
57abaac0 | 399 | http->calloutContext->no_cache_done = true; |
de31d06f | 400 | |
401 | http->doCallouts(); | |
62e76326 | 402 | |
edce4d98 | 403 | return 0; |
404 | } | |
405 | ||
de31d06f | 406 | bool |
407 | ClientRequestContext::httpStateIsValid() | |
408 | { | |
409 | ClientHttpRequest *http_ = http; | |
410 | ||
411 | if (cbdataReferenceValid(http_)) | |
412 | return true; | |
413 | ||
414 | http = NULL; | |
415 | ||
416 | cbdataReferenceDone(http_); | |
417 | ||
418 | return false; | |
419 | } | |
420 | ||
3d674977 AJ |
421 | #if FOLLOW_X_FORWARDED_FOR |
422 | /** | |
a9044668 | 423 | * clientFollowXForwardedForCheck() checks the content of X-Forwarded-For: |
3d674977 AJ |
424 | * against the followXFF ACL, or cleans up and passes control to |
425 | * clientAccessCheck(). | |
d096ace1 AJ |
426 | * |
427 | * The trust model here is a little ambiguous. So to clarify the logic: | |
428 | * - we may always use the direct client address as the client IP. | |
a9044668 | 429 | * - these trust tests merey tell whether we trust given IP enough to believe the |
d096ace1 AJ |
430 | * IP string which it appended to the X-Forwarded-For: header. |
431 | * - if at any point we don't trust what an IP adds we stop looking. | |
432 | * - at that point the current contents of indirect_client_addr are the value set | |
433 | * by the last previously trusted IP. | |
434 | * ++ indirect_client_addr contains the remote direct client from the trusted peers viewpoint. | |
3d674977 | 435 | */ |
3d674977 AJ |
436 | static void |
437 | clientFollowXForwardedForCheck(int answer, void *data) | |
438 | { | |
439 | ClientRequestContext *calloutContext = (ClientRequestContext *) data; | |
3d674977 AJ |
440 | |
441 | if (!calloutContext->httpStateIsValid()) | |
442 | return; | |
443 | ||
d096ace1 AJ |
444 | ClientHttpRequest *http = calloutContext->http; |
445 | HttpRequest *request = http->request; | |
446 | ||
3d674977 AJ |
447 | /* |
448 | * answer should be be ACCESS_ALLOWED or ACCESS_DENIED if we are | |
449 | * called as a result of ACL checks, or -1 if we are called when | |
450 | * there's nothing left to do. | |
451 | */ | |
452 | if (answer == ACCESS_ALLOWED && | |
26ac0430 | 453 | request->x_forwarded_for_iterator.size () != 0) { |
d096ace1 | 454 | |
3d674977 | 455 | /* |
d096ace1 AJ |
456 | * Remove the last comma-delimited element from the |
457 | * x_forwarded_for_iterator and use it to repeat the cycle. | |
458 | */ | |
3d674977 AJ |
459 | const char *p; |
460 | const char *asciiaddr; | |
461 | int l; | |
b7ac5457 | 462 | Ip::Address addr; |
bb790702 | 463 | p = request->x_forwarded_for_iterator.termedBuf(); |
3d674977 AJ |
464 | l = request->x_forwarded_for_iterator.size(); |
465 | ||
466 | /* | |
467 | * XXX x_forwarded_for_iterator should really be a list of | |
468 | * IP addresses, but it's a String instead. We have to | |
469 | * walk backwards through the String, biting off the last | |
470 | * comma-delimited part each time. As long as the data is in | |
471 | * a String, we should probably implement and use a variant of | |
472 | * strListGetItem() that walks backwards instead of forwards | |
473 | * through a comma-separated list. But we don't even do that; | |
474 | * we just do the work in-line here. | |
475 | */ | |
476 | /* skip trailing space and commas */ | |
477 | while (l > 0 && (p[l-1] == ',' || xisspace(p[l-1]))) | |
478 | l--; | |
479 | request->x_forwarded_for_iterator.cut(l); | |
480 | /* look for start of last item in list */ | |
481 | while (l > 0 && ! (p[l-1] == ',' || xisspace(p[l-1]))) | |
482 | l--; | |
483 | asciiaddr = p+l; | |
fafd0efa | 484 | if ((addr = asciiaddr)) { |
3d674977 AJ |
485 | request->indirect_client_addr = addr; |
486 | request->x_forwarded_for_iterator.cut(l); | |
d096ace1 AJ |
487 | calloutContext->acl_checklist = clientAclChecklistCreate(Config.accessList.followXFF, http); |
488 | if (!Config.onoff.acl_uses_indirect_client) { | |
489 | /* override the default src_addr tested if we have to go deeper than one level into XFF */ | |
490 | Filled(calloutContext->acl_checklist)->src_addr = request->indirect_client_addr; | |
3d674977 | 491 | } |
d096ace1 | 492 | calloutContext->acl_checklist->nonBlockingCheck(clientFollowXForwardedForCheck, data); |
3d674977 AJ |
493 | return; |
494 | } | |
495 | } /*if (answer == ACCESS_ALLOWED && | |
496 | request->x_forwarded_for_iterator.size () != 0)*/ | |
497 | ||
498 | /* clean up, and pass control to clientAccessCheck */ | |
26ac0430 | 499 | if (Config.onoff.log_uses_indirect_client) { |
3d674977 AJ |
500 | /* |
501 | * Ensure that the access log shows the indirect client | |
502 | * instead of the direct client. | |
503 | */ | |
504 | ConnStateData *conn = http->getConn(); | |
505 | conn->log_addr = request->indirect_client_addr; | |
506 | } | |
507 | request->x_forwarded_for_iterator.clean(); | |
508 | request->flags.done_follow_x_forwarded_for = 1; | |
509 | ||
d096ace1 AJ |
510 | if (answer != ACCESS_ALLOWED && answer != ACCESS_DENIED) { |
511 | debugs(28, DBG_CRITICAL, "ERROR: Processing X-Forwarded-For. Stopping at IP address: " << request->indirect_client_addr ); | |
493d3865 AJ |
512 | } |
513 | ||
514 | /* process actual access ACL as normal. */ | |
515 | calloutContext->clientAccessCheck(); | |
3d674977 AJ |
516 | } |
517 | #endif /* FOLLOW_X_FORWARDED_FOR */ | |
518 | ||
edce4d98 | 519 | /* This is the entry point for external users of the client_side routines */ |
520 | void | |
de31d06f | 521 | ClientRequestContext::clientAccessCheck() |
edce4d98 | 522 | { |
3d674977 AJ |
523 | #if FOLLOW_X_FORWARDED_FOR |
524 | if (!http->request->flags.done_follow_x_forwarded_for && | |
26ac0430 AJ |
525 | Config.accessList.followXFF && |
526 | http->request->header.has(HDR_X_FORWARDED_FOR)) { | |
d096ace1 AJ |
527 | |
528 | /* we always trust the direct client address for actual use */ | |
529 | http->request->indirect_client_addr = http->request->client_addr; | |
fafd0efa | 530 | http->request->indirect_client_addr.SetPort(0); |
d096ace1 AJ |
531 | |
532 | /* setup the XFF iterator for processing */ | |
533 | http->request->x_forwarded_for_iterator = http->request->header.getList(HDR_X_FORWARDED_FOR); | |
534 | ||
535 | /* begin by checking to see if we trust direct client enough to walk XFF */ | |
536 | acl_checklist = clientAclChecklistCreate(Config.accessList.followXFF, http); | |
537 | acl_checklist->nonBlockingCheck(clientFollowXForwardedForCheck, this); | |
3d674977 AJ |
538 | return; |
539 | } | |
540 | #endif /* FOLLOW_X_FORWARDED_FOR */ | |
493d3865 | 541 | |
b50e327b AJ |
542 | if (Config.accessList.http) { |
543 | acl_checklist = clientAclChecklistCreate(Config.accessList.http, http); | |
544 | acl_checklist->nonBlockingCheck(clientAccessCheckDoneWrapper, this); | |
545 | } else { | |
546 | debugs(0, DBG_CRITICAL, "No http_access configuration found. This will block ALL traffic"); | |
547 | clientAccessCheckDone(ACCESS_DENIED); | |
548 | } | |
edce4d98 | 549 | } |
550 | ||
533493da AJ |
551 | /** |
552 | * Identical in operation to clientAccessCheck() but performed later using different configured ACL list. | |
553 | * The default here is to allow all. Since the earlier http_access should do a default deny all. | |
554 | * This check is just for a last-minute denial based on adapted request headers. | |
555 | */ | |
556 | void | |
557 | ClientRequestContext::clientAccessCheck2() | |
558 | { | |
559 | if (Config.accessList.adapted_http) { | |
560 | acl_checklist = clientAclChecklistCreate(Config.accessList.adapted_http, http); | |
561 | acl_checklist->nonBlockingCheck(clientAccessCheckDoneWrapper, this); | |
562 | } else { | |
563 | debugs(85, 2, HERE << "No adapted_http_access configuration."); | |
564 | clientAccessCheckDone(ACCESS_ALLOWED); | |
565 | } | |
566 | } | |
567 | ||
edce4d98 | 568 | void |
de31d06f | 569 | clientAccessCheckDoneWrapper(int answer, void *data) |
edce4d98 | 570 | { |
de31d06f | 571 | ClientRequestContext *calloutContext = (ClientRequestContext *) data; |
fbade053 | 572 | |
de31d06f | 573 | if (!calloutContext->httpStateIsValid()) |
62e76326 | 574 | return; |
62e76326 | 575 | |
de31d06f | 576 | calloutContext->clientAccessCheckDone(answer); |
577 | } | |
578 | ||
579 | void | |
580 | ClientRequestContext::clientAccessCheckDone(int answer) | |
581 | { | |
582 | acl_checklist = NULL; | |
edce4d98 | 583 | err_type page_id; |
584 | http_status status; | |
26ac0430 AJ |
585 | debugs(85, 2, "The request " << |
586 | RequestMethodStr(http->request->method) << " " << | |
587 | http->uri << " is " << | |
588 | (answer == ACCESS_ALLOWED ? "ALLOWED" : "DENIED") << | |
589 | ", because it matched '" << | |
590 | (AclMatchedName ? AclMatchedName : "NO ACL's") << "'" ); | |
f5691f9c | 591 | |
2f1431ea AJ |
592 | #if USE_AUTH |
593 | char const *proxy_auth_msg = "<null>"; | |
94a396a3 | 594 | if (http->getConn() != NULL && http->getConn()->auth_user_request != NULL) |
f5691f9c | 595 | proxy_auth_msg = http->getConn()->auth_user_request->denyMessage("<null>"); |
596 | else if (http->request->auth_user_request != NULL) | |
597 | proxy_auth_msg = http->request->auth_user_request->denyMessage("<null>"); | |
2f1431ea | 598 | #endif |
62e76326 | 599 | |
de31d06f | 600 | if (answer != ACCESS_ALLOWED) { |
62e76326 | 601 | /* Send an error */ |
9ce7856a | 602 | int require_auth = (answer == ACCESS_REQ_PROXY_AUTH || aclIsProxyAuth(AclMatchedName)); |
bf8fe701 | 603 | debugs(85, 5, "Access Denied: " << http->uri); |
604 | debugs(85, 5, "AclMatchedName = " << (AclMatchedName ? AclMatchedName : "<null>")); | |
2f1431ea | 605 | #if USE_AUTH |
9ce7856a | 606 | if (require_auth) |
bf8fe701 | 607 | debugs(33, 5, "Proxy Auth Message = " << (proxy_auth_msg ? proxy_auth_msg : "<null>")); |
2f1431ea | 608 | #endif |
9ce7856a | 609 | |
62e76326 | 610 | /* |
611 | * NOTE: get page_id here, based on AclMatchedName because if | |
612 | * USE_DELAY_POOLS is enabled, then AclMatchedName gets clobbered in | |
613 | * the clientCreateStoreEntry() call just below. Pedro Ribeiro | |
614 | * <pribeiro@isel.pt> | |
615 | */ | |
9ce7856a | 616 | page_id = aclGetDenyInfoPage(&Config.denyInfoList, AclMatchedName, answer != ACCESS_REQ_PROXY_AUTH); |
617 | ||
62e76326 | 618 | http->logType = LOG_TCP_DENIED; |
619 | ||
9ce7856a | 620 | if (require_auth) { |
2f1431ea | 621 | #if USE_AUTH |
62e76326 | 622 | if (!http->flags.accel) { |
623 | /* Proxy authorisation needed */ | |
624 | status = HTTP_PROXY_AUTHENTICATION_REQUIRED; | |
625 | } else { | |
626 | /* WWW authorisation needed */ | |
627 | status = HTTP_UNAUTHORIZED; | |
628 | } | |
2f1431ea AJ |
629 | #else |
630 | // need auth, but not possible to do. | |
631 | status = HTTP_FORBIDDEN; | |
632 | #endif | |
62e76326 | 633 | if (page_id == ERR_NONE) |
634 | page_id = ERR_CACHE_ACCESS_DENIED; | |
635 | } else { | |
636 | status = HTTP_FORBIDDEN; | |
637 | ||
638 | if (page_id == ERR_NONE) | |
639 | page_id = ERR_ACCESS_DENIED; | |
640 | } | |
641 | ||
de31d06f | 642 | clientStreamNode *node = (clientStreamNode *)http->client_stream.tail->prev->data; |
0655fa4d | 643 | clientReplyContext *repContext = dynamic_cast<clientReplyContext *>(node->data.getRaw()); |
644 | assert (repContext); | |
b7ac5457 | 645 | Ip::Address tmpnoaddr; |
26ac0430 | 646 | tmpnoaddr.SetNoAddr(); |
0655fa4d | 647 | repContext->setReplyToError(page_id, status, |
648 | http->request->method, NULL, | |
cc192b50 | 649 | http->getConn() != NULL ? http->getConn()->peer : tmpnoaddr, |
650 | http->request, | |
651 | NULL, | |
2f1431ea | 652 | #if USE_AUTH |
a33a428a | 653 | http->getConn() != NULL && http->getConn()->auth_user_request != NULL ? |
cc192b50 | 654 | http->getConn()->auth_user_request : http->request->auth_user_request); |
2f1431ea AJ |
655 | #else |
656 | NULL); | |
657 | #endif | |
62e76326 | 658 | node = (clientStreamNode *)http->client_stream.tail->data; |
659 | clientStreamRead(node, http, node->readBuffer); | |
a546b04b | 660 | return; |
edce4d98 | 661 | } |
de31d06f | 662 | |
663 | /* ACCESS_ALLOWED continues here ... */ | |
664 | safe_free(http->uri); | |
665 | ||
666 | http->uri = xstrdup(urlCanonical(http->request)); | |
667 | ||
668 | http->doCallouts(); | |
669 | } | |
670 | ||
a83c6ed6 | 671 | #if USE_ADAPTATION |
de31d06f | 672 | static void |
a22e6cd3 | 673 | adaptationAclCheckDoneWrapper(Adaptation::ServiceGroupPointer g, void *data) |
de31d06f | 674 | { |
675 | ClientRequestContext *calloutContext = (ClientRequestContext *)data; | |
676 | ||
677 | if (!calloutContext->httpStateIsValid()) | |
678 | return; | |
679 | ||
a22e6cd3 | 680 | calloutContext->adaptationAclCheckDone(g); |
de31d06f | 681 | } |
682 | ||
683 | void | |
a22e6cd3 | 684 | ClientRequestContext::adaptationAclCheckDone(Adaptation::ServiceGroupPointer g) |
de31d06f | 685 | { |
a83c6ed6 | 686 | debugs(93,3,HERE << this << " adaptationAclCheckDone called"); |
6ec67de9 | 687 | assert(http); |
688 | ||
e1381638 | 689 | #if ICAP_CLIENT |
3ff65596 | 690 | Adaptation::Icap::History::Pointer ih = http->request->icapHistory(); |
e1381638 AJ |
691 | if (ih != NULL) { |
692 | if (http->getConn() != NULL) { | |
3ff65596 | 693 | ih->rfc931 = http->getConn()->rfc931; |
e1381638 | 694 | #if USE_SSL |
3ff65596 | 695 | ih->ssluser = sslGetUserEmail(fd_table[http->getConn()->fd].ssl); |
e1381638 | 696 | #endif |
3ff65596 AR |
697 | } |
698 | ih->log_uri = http->log_uri; | |
699 | ih->req_sz = http->req_sz; | |
700 | } | |
701 | #endif | |
702 | ||
a22e6cd3 AR |
703 | if (!g) { |
704 | debugs(85,3, HERE << "no adaptation needed"); | |
5f8252d2 | 705 | http->doCallouts(); |
706 | return; | |
707 | } | |
de31d06f | 708 | |
a22e6cd3 | 709 | http->startAdaptation(g); |
edce4d98 | 710 | } |
711 | ||
de31d06f | 712 | #endif |
713 | ||
14cc8559 | 714 | static void |
715 | clientRedirectAccessCheckDone(int answer, void *data) | |
716 | { | |
717 | ClientRequestContext *context = (ClientRequestContext *)data; | |
59a1efb2 | 718 | ClientHttpRequest *http = context->http; |
14cc8559 | 719 | context->acl_checklist = NULL; |
720 | ||
721 | if (answer == ACCESS_ALLOWED) | |
de31d06f | 722 | redirectStart(http, clientRedirectDoneWrapper, context); |
14cc8559 | 723 | else |
de31d06f | 724 | context->clientRedirectDone(NULL); |
14cc8559 | 725 | } |
726 | ||
de31d06f | 727 | void |
728 | ClientRequestContext::clientRedirectStart() | |
14cc8559 | 729 | { |
bf8fe701 | 730 | debugs(33, 5, "clientRedirectStart: '" << http->uri << "'"); |
14cc8559 | 731 | |
14cc8559 | 732 | if (Config.accessList.redirector) { |
de31d06f | 733 | acl_checklist = clientAclChecklistCreate(Config.accessList.redirector, http); |
734 | acl_checklist->nonBlockingCheck(clientRedirectAccessCheckDone, this); | |
14cc8559 | 735 | } else |
de31d06f | 736 | redirectStart(http, clientRedirectDoneWrapper, this); |
14cc8559 | 737 | } |
738 | ||
edce4d98 | 739 | static int |
59a1efb2 | 740 | clientHierarchical(ClientHttpRequest * http) |
edce4d98 | 741 | { |
742 | const char *url = http->uri; | |
190154cf | 743 | HttpRequest *request = http->request; |
60745f24 | 744 | HttpRequestMethod method = request->method; |
edce4d98 | 745 | const wordlist *p = NULL; |
746 | ||
69660be0 | 747 | /* |
748 | * IMS needs a private key, so we can use the hierarchy for IMS only if our | |
749 | * neighbors support private keys | |
750 | */ | |
62e76326 | 751 | |
edce4d98 | 752 | if (request->flags.ims && !neighbors_do_private_keys) |
62e76326 | 753 | return 0; |
754 | ||
69660be0 | 755 | /* |
756 | * This is incorrect: authenticating requests can be sent via a hierarchy | |
06b97e72 | 757 | * (they can even be cached if the correct headers are set on the reply) |
edce4d98 | 758 | */ |
759 | if (request->flags.auth) | |
62e76326 | 760 | return 0; |
761 | ||
edce4d98 | 762 | if (method == METHOD_TRACE) |
62e76326 | 763 | return 1; |
764 | ||
edce4d98 | 765 | if (method != METHOD_GET) |
62e76326 | 766 | return 0; |
767 | ||
edce4d98 | 768 | /* scan hierarchy_stoplist */ |
769 | for (p = Config.hierarchy_stoplist; p; p = p->next) | |
62e76326 | 770 | if (strstr(url, p->key)) |
771 | return 0; | |
772 | ||
edce4d98 | 773 | if (request->flags.loopdetect) |
62e76326 | 774 | return 0; |
775 | ||
0c3d3f65 | 776 | if (request->protocol == AnyP::PROTO_HTTP) |
62e76326 | 777 | return httpCachable(method); |
778 | ||
0c3d3f65 | 779 | if (request->protocol == AnyP::PROTO_GOPHER) |
62e76326 | 780 | return gopherCachable(request); |
781 | ||
39a19cb7 | 782 | if (request->protocol == AnyP::PROTO_CACHE_OBJECT) |
62e76326 | 783 | return 0; |
784 | ||
edce4d98 | 785 | return 1; |
786 | } | |
787 | ||
46a1f562 HN |
788 | static void |
789 | clientCheckPinning(ClientHttpRequest * http) | |
790 | { | |
791 | HttpRequest *request = http->request; | |
792 | HttpHeader *req_hdr = &request->header; | |
793 | ConnStateData *http_conn = http->getConn(); | |
794 | ||
795 | /* Internal requests such as those from ESI includes may be without | |
796 | * a client connection | |
797 | */ | |
798 | if (!http_conn) | |
f54f527e | 799 | return; |
46a1f562 HN |
800 | |
801 | request->flags.connection_auth_disabled = http_conn->port->connection_auth_disabled; | |
802 | if (!request->flags.connection_auth_disabled) { | |
803 | if (http_conn->pinning.fd != -1) { | |
804 | if (http_conn->pinning.auth) { | |
805 | request->flags.connection_auth = 1; | |
806 | request->flags.auth = 1; | |
807 | } else { | |
808 | request->flags.connection_proxy_auth = 1; | |
809 | } | |
b1cf2350 AJ |
810 | // These should already be linked correctly. |
811 | assert(request->clientConnectionManager == http_conn); | |
46a1f562 HN |
812 | } |
813 | } | |
814 | ||
815 | /* check if connection auth is used, and flag as candidate for pinning | |
816 | * in such case. | |
817 | * Note: we may need to set flags.connection_auth even if the connection | |
818 | * is already pinned if it was pinned earlier due to proxy auth | |
819 | */ | |
820 | if (!request->flags.connection_auth) { | |
821 | if (req_hdr->has(HDR_AUTHORIZATION) || req_hdr->has(HDR_PROXY_AUTHORIZATION)) { | |
822 | HttpHeaderPos pos = HttpHeaderInitPos; | |
823 | HttpHeaderEntry *e; | |
824 | int may_pin = 0; | |
825 | while ((e = req_hdr->getEntry(&pos))) { | |
826 | if (e->id == HDR_AUTHORIZATION || e->id == HDR_PROXY_AUTHORIZATION) { | |
827 | const char *value = e->value.rawBuf(); | |
828 | if (strncasecmp(value, "NTLM ", 5) == 0 | |
829 | || | |
830 | strncasecmp(value, "Negotiate ", 10) == 0 | |
831 | || | |
832 | strncasecmp(value, "Kerberos ", 9) == 0) { | |
833 | if (e->id == HDR_AUTHORIZATION) { | |
834 | request->flags.connection_auth = 1; | |
835 | may_pin = 1; | |
836 | } else { | |
837 | request->flags.connection_proxy_auth = 1; | |
838 | may_pin = 1; | |
839 | } | |
840 | } | |
841 | } | |
842 | } | |
843 | if (may_pin && !request->pinnedConnection()) { | |
b1cf2350 AJ |
844 | // These should already be linked correctly. Just need the ServerConnection to pinn. |
845 | assert(request->clientConnectionManager == http_conn); | |
46a1f562 HN |
846 | } |
847 | } | |
848 | } | |
849 | } | |
850 | ||
edce4d98 | 851 | static void |
59a1efb2 | 852 | clientInterpretRequestHeaders(ClientHttpRequest * http) |
edce4d98 | 853 | { |
190154cf | 854 | HttpRequest *request = http->request; |
0ef77270 | 855 | HttpHeader *req_hdr = &request->header; |
edce4d98 | 856 | int no_cache = 0; |
edce4d98 | 857 | const char *str; |
62e76326 | 858 | |
edce4d98 | 859 | request->imslen = -1; |
a9925b40 | 860 | request->ims = req_hdr->getTime(HDR_IF_MODIFIED_SINCE); |
62e76326 | 861 | |
edce4d98 | 862 | if (request->ims > 0) |
62e76326 | 863 | request->flags.ims = 1; |
864 | ||
432bc83c HN |
865 | if (!request->flags.ignore_cc) { |
866 | if (req_hdr->has(HDR_PRAGMA)) { | |
867 | String s = req_hdr->getList(HDR_PRAGMA); | |
62e76326 | 868 | |
432bc83c HN |
869 | if (strListIsMember(&s, "no-cache", ',')) |
870 | no_cache++; | |
30abd221 | 871 | |
432bc83c HN |
872 | s.clean(); |
873 | } | |
62e76326 | 874 | |
432bc83c HN |
875 | if (request->cache_control) |
876 | if (EBIT_TEST(request->cache_control->mask, CC_NO_CACHE)) | |
877 | no_cache++; | |
62e76326 | 878 | |
432bc83c HN |
879 | /* |
880 | * Work around for supporting the Reload button in IE browsers when Squid | |
881 | * is used as an accelerator or transparent proxy, by turning accelerated | |
882 | * IMS request to no-cache requests. Now knows about IE 5.5 fix (is | |
883 | * actually only fixed in SP1, but we can't tell whether we are talking to | |
884 | * SP1 or not so all 5.5 versions are treated 'normally'). | |
885 | */ | |
886 | if (Config.onoff.ie_refresh) { | |
887 | if (http->flags.accel && request->flags.ims) { | |
888 | if ((str = req_hdr->getStr(HDR_USER_AGENT))) { | |
889 | if (strstr(str, "MSIE 5.01") != NULL) | |
890 | no_cache++; | |
891 | else if (strstr(str, "MSIE 5.0") != NULL) | |
892 | no_cache++; | |
893 | else if (strstr(str, "MSIE 4.") != NULL) | |
894 | no_cache++; | |
895 | else if (strstr(str, "MSIE 3.") != NULL) | |
896 | no_cache++; | |
897 | } | |
62e76326 | 898 | } |
899 | } | |
edce4d98 | 900 | } |
914b89a2 | 901 | |
902 | if (request->method == METHOD_OTHER) { | |
26ac0430 | 903 | no_cache++; |
60745f24 | 904 | } |
62e76326 | 905 | |
edce4d98 | 906 | if (no_cache) { |
626096be | 907 | #if USE_HTTP_VIOLATIONS |
62e76326 | 908 | |
909 | if (Config.onoff.reload_into_ims) | |
910 | request->flags.nocache_hack = 1; | |
911 | else if (refresh_nocache_hack) | |
912 | request->flags.nocache_hack = 1; | |
913 | else | |
edce4d98 | 914 | #endif |
62e76326 | 915 | |
916 | request->flags.nocache = 1; | |
edce4d98 | 917 | } |
62e76326 | 918 | |
0ef77270 | 919 | /* ignore range header in non-GETs or non-HEADs */ |
920 | if (request->method == METHOD_GET || request->method == METHOD_HEAD) { | |
56713d9a AR |
921 | // XXX: initialize if we got here without HttpRequest::parseHeader() |
922 | if (!request->range) | |
923 | request->range = req_hdr->getRange(); | |
62e76326 | 924 | |
925 | if (request->range) { | |
926 | request->flags.range = 1; | |
927 | clientStreamNode *node = (clientStreamNode *)http->client_stream.tail->data; | |
928 | /* XXX: This is suboptimal. We should give the stream the range set, | |
929 | * and thereby let the top of the stream set the offset when the | |
26ac0430 | 930 | * size becomes known. As it is, we will end up requesting from 0 |
62e76326 | 931 | * for evey -X range specification. |
932 | * RBC - this may be somewhat wrong. We should probably set the range | |
933 | * iter up at this point. | |
934 | */ | |
935 | node->readBuffer.offset = request->range->lowestOffset(0); | |
936 | http->range_iter.pos = request->range->begin(); | |
937 | http->range_iter.valid = true; | |
938 | } | |
edce4d98 | 939 | } |
62e76326 | 940 | |
0ef77270 | 941 | /* Only HEAD and GET requests permit a Range or Request-Range header. |
942 | * If these headers appear on any other type of request, delete them now. | |
943 | */ | |
944 | else { | |
945 | req_hdr->delById(HDR_RANGE); | |
946 | req_hdr->delById(HDR_REQUEST_RANGE); | |
56713d9a | 947 | delete request->range; |
0ef77270 | 948 | request->range = NULL; |
949 | } | |
950 | ||
a9925b40 | 951 | if (req_hdr->has(HDR_AUTHORIZATION)) |
62e76326 | 952 | request->flags.auth = 1; |
953 | ||
46a1f562 | 954 | clientCheckPinning(http); |
d67acb4e | 955 | |
edce4d98 | 956 | if (request->login[0] != '\0') |
62e76326 | 957 | request->flags.auth = 1; |
958 | ||
a9925b40 | 959 | if (req_hdr->has(HDR_VIA)) { |
30abd221 | 960 | String s = req_hdr->getList(HDR_VIA); |
62e76326 | 961 | /* |
3c4fcf0f | 962 | * ThisCache cannot be a member of Via header, "1.1 ThisCache" can. |
62e76326 | 963 | * Note ThisCache2 has a space prepended to the hostname so we don't |
964 | * accidentally match super-domains. | |
965 | */ | |
966 | ||
967 | if (strListIsSubstr(&s, ThisCache2, ',')) { | |
968 | debugObj(33, 1, "WARNING: Forwarding loop detected for:\n", | |
969 | request, (ObjPackMethod) & httpRequestPack); | |
970 | request->flags.loopdetect = 1; | |
971 | } | |
972 | ||
21f6708d | 973 | #if USE_FORW_VIA_DB |
bb790702 | 974 | fvdbCountVia(s.termedBuf()); |
62e76326 | 975 | |
edce4d98 | 976 | #endif |
62e76326 | 977 | |
30abd221 | 978 | s.clean(); |
edce4d98 | 979 | } |
62e76326 | 980 | |
21f6708d | 981 | #if USE_FORW_VIA_DB |
62e76326 | 982 | |
a9925b40 | 983 | if (req_hdr->has(HDR_X_FORWARDED_FOR)) { |
30abd221 | 984 | String s = req_hdr->getList(HDR_X_FORWARDED_FOR); |
bb790702 | 985 | fvdbCountForw(s.termedBuf()); |
30abd221 | 986 | s.clean(); |
edce4d98 | 987 | } |
62e76326 | 988 | |
edce4d98 | 989 | #endif |
62e76326 | 990 | |
610ee341 | 991 | request->flags.cachable = http->request->cacheable(); |
62e76326 | 992 | |
edce4d98 | 993 | if (clientHierarchical(http)) |
62e76326 | 994 | request->flags.hierarchical = 1; |
995 | ||
bf8fe701 | 996 | debugs(85, 5, "clientInterpretRequestHeaders: REQ_NOCACHE = " << |
997 | (request->flags.nocache ? "SET" : "NOT SET")); | |
998 | debugs(85, 5, "clientInterpretRequestHeaders: REQ_CACHABLE = " << | |
999 | (request->flags.cachable ? "SET" : "NOT SET")); | |
1000 | debugs(85, 5, "clientInterpretRequestHeaders: REQ_HIERARCHICAL = " << | |
1001 | (request->flags.hierarchical ? "SET" : "NOT SET")); | |
62e76326 | 1002 | |
edce4d98 | 1003 | } |
1004 | ||
1005 | void | |
de31d06f | 1006 | clientRedirectDoneWrapper(void *data, char *result) |
edce4d98 | 1007 | { |
de31d06f | 1008 | ClientRequestContext *calloutContext = (ClientRequestContext *)data; |
db02222f | 1009 | |
de31d06f | 1010 | if (!calloutContext->httpStateIsValid()) |
62e76326 | 1011 | return; |
62e76326 | 1012 | |
de31d06f | 1013 | calloutContext->clientRedirectDone(result); |
1014 | } | |
1015 | ||
1016 | void | |
1017 | ClientRequestContext::clientRedirectDone(char *result) | |
1018 | { | |
190154cf | 1019 | HttpRequest *new_request = NULL; |
1020 | HttpRequest *old_request = http->request; | |
bf8fe701 | 1021 | debugs(85, 5, "clientRedirectDone: '" << http->uri << "' result=" << (result ? result : "NULL")); |
de31d06f | 1022 | assert(redirect_state == REDIRECT_PENDING); |
1023 | redirect_state = REDIRECT_DONE; | |
62e76326 | 1024 | |
edce4d98 | 1025 | if (result) { |
62e76326 | 1026 | http_status status = (http_status) atoi(result); |
1027 | ||
1028 | if (status == HTTP_MOVED_PERMANENTLY | |
1029 | || status == HTTP_MOVED_TEMPORARILY | |
1030 | || status == HTTP_SEE_OTHER | |
1031 | || status == HTTP_TEMPORARY_REDIRECT) { | |
1032 | char *t = result; | |
1033 | ||
1034 | if ((t = strchr(result, ':')) != NULL) { | |
1035 | http->redirect.status = status; | |
1036 | http->redirect.location = xstrdup(t + 1); | |
e5b677f0 | 1037 | // TODO: validate the URL produced here is RFC 2616 compliant absolute URI |
62e76326 | 1038 | } else { |
e5b677f0 AJ |
1039 | if (old_request->http_ver < HttpVersion(1,1)) |
1040 | debugs(85, DBG_CRITICAL, "ERROR: URL-rewrite produces invalid 302 redirect Location: " << result); | |
1041 | else | |
1042 | debugs(85, DBG_CRITICAL, "ERROR: URL-rewrite produces invalid 303 redirect Location: " << result); | |
62e76326 | 1043 | } |
e5b677f0 AJ |
1044 | } else if (strcmp(result, http->uri)) { |
1045 | if (!(new_request = HttpRequest::CreateFromUrlAndMethod(result, old_request->method))) | |
1046 | debugs(85, DBG_CRITICAL, "ERROR: URL-rewrite produces invalid request: " << | |
1047 | old_request->method << " " << result << " HTTP/1.1"); | |
74b48915 | 1048 | } |
edce4d98 | 1049 | } |
62e76326 | 1050 | |
edce4d98 | 1051 | if (new_request) { |
62e76326 | 1052 | safe_free(http->uri); |
1053 | http->uri = xstrdup(urlCanonical(new_request)); | |
1054 | new_request->http_ver = old_request->http_ver; | |
a9925b40 | 1055 | new_request->header.append(&old_request->header); |
62e76326 | 1056 | new_request->client_addr = old_request->client_addr; |
3d674977 AJ |
1057 | #if FOLLOW_X_FORWARDED_FOR |
1058 | new_request->indirect_client_addr = old_request->indirect_client_addr; | |
1059 | #endif /* FOLLOW_X_FORWARDED_FOR */ | |
62e76326 | 1060 | new_request->my_addr = old_request->my_addr; |
62e76326 | 1061 | new_request->flags = old_request->flags; |
3c1f01bc | 1062 | new_request->flags.redirected = 1; |
2f1431ea | 1063 | #if USE_AUTH |
a33a428a | 1064 | new_request->auth_user_request = old_request->auth_user_request; |
2f1431ea | 1065 | #endif |
5f8252d2 | 1066 | if (old_request->body_pipe != NULL) { |
1067 | new_request->body_pipe = old_request->body_pipe; | |
1068 | old_request->body_pipe = NULL; | |
4194f7b6 AJ |
1069 | debugs(61,2, HERE << "URL-rewriter diverts body_pipe " << new_request->body_pipe << |
1070 | " from request " << old_request << " to " << new_request); | |
62e76326 | 1071 | } |
1072 | ||
1073 | new_request->content_length = old_request->content_length; | |
abb929f0 | 1074 | new_request->extacl_user = old_request->extacl_user; |
1075 | new_request->extacl_passwd = old_request->extacl_passwd; | |
62e76326 | 1076 | new_request->flags.proxy_keepalive = old_request->flags.proxy_keepalive; |
6dd9f4bd | 1077 | HTTPMSGUNLOCK(old_request); |
1078 | http->request = HTTPMSGLOCK(new_request); | |
edce4d98 | 1079 | } |
62e76326 | 1080 | |
edce4d98 | 1081 | /* FIXME PIPELINE: This is innacurate during pipelining */ |
62e76326 | 1082 | |
5f8252d2 | 1083 | if (http->getConn() != NULL) |
98242069 | 1084 | fd_note(http->getConn()->fd, http->uri); |
62e76326 | 1085 | |
c8be6d7b | 1086 | assert(http->uri); |
62e76326 | 1087 | |
de31d06f | 1088 | http->doCallouts(); |
edce4d98 | 1089 | } |
1090 | ||
b50e327b AJ |
1091 | /** Test cache allow/deny configuration |
1092 | * Sets flags.cachable=1 if caching is not denied. | |
1093 | */ | |
edce4d98 | 1094 | void |
8e2745f4 | 1095 | ClientRequestContext::checkNoCache() |
edce4d98 | 1096 | { |
b50e327b AJ |
1097 | if (Config.accessList.noCache) { |
1098 | acl_checklist = clientAclChecklistCreate(Config.accessList.noCache, http); | |
1099 | acl_checklist->nonBlockingCheck(checkNoCacheDoneWrapper, this); | |
1100 | } else { | |
1101 | /* unless otherwise specified, we try to cache. */ | |
1102 | checkNoCacheDone(1); | |
1103 | } | |
edce4d98 | 1104 | } |
1105 | ||
de31d06f | 1106 | static void |
1107 | checkNoCacheDoneWrapper(int answer, void *data) | |
edce4d98 | 1108 | { |
de31d06f | 1109 | ClientRequestContext *calloutContext = (ClientRequestContext *) data; |
e4a67a80 | 1110 | |
de31d06f | 1111 | if (!calloutContext->httpStateIsValid()) |
1112 | return; | |
1113 | ||
1114 | calloutContext->checkNoCacheDone(answer); | |
8e2745f4 | 1115 | } |
4fb35c3c | 1116 | |
8e2745f4 | 1117 | void |
1118 | ClientRequestContext::checkNoCacheDone(int answer) | |
62e76326 | 1119 | { |
8e2745f4 | 1120 | acl_checklist = NULL; |
de31d06f | 1121 | http->request->flags.cachable = answer; |
1122 | http->doCallouts(); | |
edce4d98 | 1123 | } |
1124 | ||
e0c0d54c CT |
1125 | #if USE_SSL |
1126 | bool | |
1127 | ClientRequestContext::sslBumpAccessCheck() | |
1128 | { | |
1129 | if (http->request->method == METHOD_CONNECT && | |
f8901ea9 | 1130 | Config.accessList.ssl_bump && http->getConn()->port->sslBump) { |
e0c0d54c CT |
1131 | debugs(85, 5, HERE << "SslBump possible, checking ACL"); |
1132 | ||
1133 | ACLFilledChecklist *acl_checklist = clientAclChecklistCreate(Config.accessList.ssl_bump, http); | |
1134 | acl_checklist->nonBlockingCheck(sslBumpAccessCheckDoneWrapper, this); | |
1135 | return true; | |
f8901ea9 | 1136 | } else { |
e0c0d54c CT |
1137 | http->sslBumpNeeded(false); |
1138 | return false; | |
1139 | } | |
1140 | } | |
1141 | ||
f8901ea9 | 1142 | /** |
e0c0d54c CT |
1143 | * A wrapper function to use the ClientRequestContext::sslBumpAccessCheckDone method |
1144 | * as ACLFilledChecklist callback | |
1145 | */ | |
1146 | static void | |
1147 | sslBumpAccessCheckDoneWrapper(int answer, void *data) | |
1148 | { | |
1149 | ClientRequestContext *calloutContext = static_cast<ClientRequestContext *>(data); | |
1150 | ||
1151 | if (!calloutContext->httpStateIsValid()) | |
1152 | return; | |
1153 | calloutContext->sslBumpAccessCheckDone(answer == ACCESS_ALLOWED); | |
1154 | } | |
1155 | ||
1156 | void | |
1157 | ClientRequestContext::sslBumpAccessCheckDone(bool doSslBump) | |
1158 | { | |
1159 | http->sslBumpNeeded(doSslBump); | |
1160 | http->doCallouts(); | |
1161 | } | |
1162 | #endif | |
1163 | ||
69660be0 | 1164 | /* |
1165 | * Identify requests that do not go through the store and client side stream | |
1166 | * and forward them to the appropriate location. All other requests, request | |
1167 | * them. | |
edce4d98 | 1168 | */ |
1169 | void | |
8e2745f4 | 1170 | ClientHttpRequest::processRequest() |
edce4d98 | 1171 | { |
60745f24 | 1172 | debugs(85, 4, "clientProcessRequest: " << RequestMethodStr(request->method) << " '" << uri << "'"); |
62e76326 | 1173 | |
31281814 | 1174 | if (request->method == METHOD_CONNECT && !redirect.status) { |
3712be3f | 1175 | #if USE_SSL |
31281814 AJ |
1176 | if (sslBumpNeeded()) { |
1177 | sslBumpStart(); | |
1178 | return; | |
1179 | } | |
3712be3f | 1180 | #endif |
62e76326 | 1181 | logType = LOG_TCP_MISS; |
f84dd7eb | 1182 | getConn()->stopReading(); // tunnels read for themselves |
11007d4b | 1183 | tunnelStart(this, &out.size, &al.http.code); |
62e76326 | 1184 | return; |
edce4d98 | 1185 | } |
62e76326 | 1186 | |
8e2745f4 | 1187 | httpStart(); |
1188 | } | |
1189 | ||
1190 | void | |
1191 | ClientHttpRequest::httpStart() | |
1192 | { | |
559da936 | 1193 | PROF_start(httpStart); |
8e2745f4 | 1194 | logType = LOG_TAG_NONE; |
bf8fe701 | 1195 | debugs(85, 4, "ClientHttpRequest::httpStart: " << log_tags[logType] << " for '" << uri << "'"); |
1196 | ||
edce4d98 | 1197 | /* no one should have touched this */ |
8e2745f4 | 1198 | assert(out.offset == 0); |
edce4d98 | 1199 | /* Use the Stream Luke */ |
8e2745f4 | 1200 | clientStreamNode *node = (clientStreamNode *)client_stream.tail->data; |
1201 | clientStreamRead(node, this, node->readBuffer); | |
559da936 | 1202 | PROF_stop(httpStart); |
edce4d98 | 1203 | } |
0655fa4d | 1204 | |
3712be3f | 1205 | #if USE_SSL |
1206 | ||
3712be3f | 1207 | bool |
26ac0430 AJ |
1208 | ClientHttpRequest::sslBumpNeeded() const |
1209 | { | |
e0c0d54c CT |
1210 | assert(sslBumpNeed != needUnknown); |
1211 | return (sslBumpNeed == needConfirmed); | |
1212 | } | |
3712be3f | 1213 | |
e0c0d54c CT |
1214 | void |
1215 | ClientHttpRequest::sslBumpNeeded(bool isNeeded) | |
1216 | { | |
1217 | debugs(83, 3, HERE << "sslBump required: "<< (isNeeded ? "Yes" : "No")); | |
1218 | sslBumpNeed = (isNeeded ? needConfirmed : needNot); | |
3712be3f | 1219 | } |
1220 | ||
1221 | // called when comm_write has completed | |
1222 | static void | |
1223 | SslBumpEstablish(int, char *, size_t, comm_err_t errflag, int, void *data) | |
1224 | { | |
1225 | ClientHttpRequest *r = static_cast<ClientHttpRequest*>(data); | |
1226 | debugs(85, 5, HERE << "responded to CONNECT: " << r << " ? " << errflag); | |
1227 | ||
1228 | assert(r && cbdataReferenceValid(r)); | |
1229 | r->sslBumpEstablish(errflag); | |
1230 | } | |
1231 | ||
1232 | void | |
1233 | ClientHttpRequest::sslBumpEstablish(comm_err_t errflag) | |
1234 | { | |
1235 | // Bail out quickly on COMM_ERR_CLOSING - close handlers will tidy up | |
1236 | if (errflag == COMM_ERR_CLOSING) | |
1237 | return; | |
1238 | ||
1239 | if (errflag) { | |
1fa35be8 AR |
1240 | debugs(85, 3, HERE << "CONNECT response failure in SslBump: " << errflag); |
1241 | comm_close(getConn()->fd); | |
3712be3f | 1242 | return; |
1243 | } | |
1244 | ||
95d2589c | 1245 | getConn()->switchToHttps(request->GetHost()); |
3712be3f | 1246 | } |
1247 | ||
1248 | void | |
1249 | ClientHttpRequest::sslBumpStart() | |
1250 | { | |
1251 | debugs(85, 5, HERE << "ClientHttpRequest::sslBumpStart"); | |
1252 | ||
1253 | // send an HTTP 200 response to kick client SSL negotiation | |
1254 | const int fd = getConn()->fd; | |
1255 | debugs(33, 7, HERE << "Confirming CONNECT tunnel on FD " << fd); | |
1256 | ||
1257 | // TODO: Unify with tunnel.cc and add a Server(?) header | |
1258 | static const char *const conn_established = | |
3c4fcf0f | 1259 | "HTTP/1.1 200 Connection established\r\n\r\n"; |
ec41b64c AJ |
1260 | AsyncCall::Pointer call = commCbCall(85, 5, "ClientSocketContext::sslBumpEstablish", |
1261 | CommIoCbPtrFun(&SslBumpEstablish, this)); | |
1262 | Comm::Write(fd, conn_established, strlen(conn_established), call, NULL); | |
3712be3f | 1263 | } |
1264 | ||
1265 | #endif | |
1266 | ||
0655fa4d | 1267 | bool |
1268 | ClientHttpRequest::gotEnough() const | |
1269 | { | |
86a2f789 | 1270 | /** TODO: should be querying the stream. */ |
7173d5b0 | 1271 | int64_t contentLength = |
06a5ae20 | 1272 | memObject()->getReply()->bodySize(request->method); |
0655fa4d | 1273 | assert(contentLength >= 0); |
1274 | ||
1275 | if (out.offset < contentLength) | |
1276 | return false; | |
1277 | ||
1278 | return true; | |
1279 | } | |
1280 | ||
86a2f789 | 1281 | void |
1282 | ClientHttpRequest::storeEntry(StoreEntry *newEntry) | |
1283 | { | |
1284 | entry_ = newEntry; | |
1285 | } | |
1286 | ||
0976f8db | 1287 | void |
1288 | ClientHttpRequest::loggingEntry(StoreEntry *newEntry) | |
1289 | { | |
1290 | if (loggingEntry_) | |
97b5e68f | 1291 | loggingEntry_->unlock(); |
0976f8db | 1292 | |
1293 | loggingEntry_ = newEntry; | |
1294 | ||
1295 | if (loggingEntry_) | |
3d0ac046 | 1296 | loggingEntry_->lock(); |
0976f8db | 1297 | } |
86a2f789 | 1298 | |
de31d06f | 1299 | /* |
1300 | * doCallouts() - This function controls the order of "callout" | |
1301 | * executions, including non-blocking access control checks, the | |
1302 | * redirector, and ICAP. Previously, these callouts were chained | |
1303 | * together such that "clientAccessCheckDone()" would call | |
1304 | * "clientRedirectStart()" and so on. | |
1305 | * | |
1306 | * The ClientRequestContext (aka calloutContext) class holds certain | |
1307 | * state data for the callout/callback operations. Previously | |
1308 | * ClientHttpRequest would sort of hand off control to ClientRequestContext | |
1309 | * for a short time. ClientRequestContext would then delete itself | |
1310 | * and pass control back to ClientHttpRequest when all callouts | |
1311 | * were finished. | |
1312 | * | |
1313 | * This caused some problems for ICAP because we want to make the | |
1314 | * ICAP callout after checking ACLs, but before checking the no_cache | |
1315 | * list. We can't stuff the ICAP state into the ClientRequestContext | |
1316 | * class because we still need the ICAP state after ClientRequestContext | |
1317 | * goes away. | |
1318 | * | |
1319 | * Note that ClientRequestContext is created before the first call | |
1320 | * to doCallouts(). | |
1321 | * | |
1322 | * If one of the callouts notices that ClientHttpRequest is no | |
1323 | * longer valid, it should call cbdataReferenceDone() so that | |
1324 | * ClientHttpRequest's reference count goes to zero and it will get | |
1325 | * deleted. ClientHttpRequest will then delete ClientRequestContext. | |
1326 | * | |
1327 | * Note that we set the _done flags here before actually starting | |
1328 | * the callout. This is strictly for convenience. | |
1329 | */ | |
1330 | ||
425de4c8 AJ |
1331 | extern tos_t aclMapTOS (acl_tos * head, ACLChecklist * ch); |
1332 | extern nfmark_t aclMapNfmark (acl_nfmark * head, ACLChecklist * ch); | |
057f5854 | 1333 | |
de31d06f | 1334 | void |
1335 | ClientHttpRequest::doCallouts() | |
1336 | { | |
1337 | assert(calloutContext); | |
1338 | ||
6fca33e0 CT |
1339 | /*Save the original request for logging purposes*/ |
1340 | if (!calloutContext->http->al.request) | |
105d1937 | 1341 | calloutContext->http->al.request = HTTPMSGLOCK(request); |
6fca33e0 | 1342 | |
de31d06f | 1343 | if (!calloutContext->http_access_done) { |
3712be3f | 1344 | debugs(83, 3, HERE << "Doing calloutContext->clientAccessCheck()"); |
57abaac0 | 1345 | calloutContext->http_access_done = true; |
de31d06f | 1346 | calloutContext->clientAccessCheck(); |
1347 | return; | |
1348 | } | |
1349 | ||
a83c6ed6 | 1350 | #if USE_ADAPTATION |
abd4b611 | 1351 | if (!calloutContext->adaptation_acl_check_done) { |
a83c6ed6 | 1352 | calloutContext->adaptation_acl_check_done = true; |
abd4b611 | 1353 | if (Adaptation::AccessCheck::Start( |
26ac0430 AJ |
1354 | Adaptation::methodReqmod, Adaptation::pointPreCache, |
1355 | request, NULL, adaptationAclCheckDoneWrapper, calloutContext)) | |
abd4b611 | 1356 | return; // will call callback |
de31d06f | 1357 | } |
de31d06f | 1358 | #endif |
1359 | ||
1360 | if (!calloutContext->redirect_done) { | |
57abaac0 | 1361 | calloutContext->redirect_done = true; |
de31d06f | 1362 | assert(calloutContext->redirect_state == REDIRECT_NONE); |
1363 | ||
1364 | if (Config.Program.redirect) { | |
3712be3f | 1365 | debugs(83, 3, HERE << "Doing calloutContext->clientRedirectStart()"); |
de31d06f | 1366 | calloutContext->redirect_state = REDIRECT_PENDING; |
1367 | calloutContext->clientRedirectStart(); | |
1368 | return; | |
1369 | } | |
1370 | } | |
1371 | ||
533493da AJ |
1372 | if (!calloutContext->adapted_http_access_done) { |
1373 | debugs(83, 3, HERE << "Doing calloutContext->clientAccessCheck2()"); | |
1374 | calloutContext->adapted_http_access_done = true; | |
1375 | calloutContext->clientAccessCheck2(); | |
1376 | return; | |
1377 | } | |
1378 | ||
57abaac0 | 1379 | if (!calloutContext->interpreted_req_hdrs) { |
3712be3f | 1380 | debugs(83, 3, HERE << "Doing clientInterpretRequestHeaders()"); |
57abaac0 | 1381 | calloutContext->interpreted_req_hdrs = 1; |
1382 | clientInterpretRequestHeaders(this); | |
1383 | } | |
1384 | ||
de31d06f | 1385 | if (!calloutContext->no_cache_done) { |
57abaac0 | 1386 | calloutContext->no_cache_done = true; |
de31d06f | 1387 | |
1388 | if (Config.accessList.noCache && request->flags.cachable) { | |
3712be3f | 1389 | debugs(83, 3, HERE << "Doing calloutContext->checkNoCache()"); |
de31d06f | 1390 | calloutContext->checkNoCache(); |
1391 | return; | |
1392 | } | |
1393 | } | |
1394 | ||
425de4c8 AJ |
1395 | if (!calloutContext->tosToClientDone) { |
1396 | calloutContext->tosToClientDone = true; | |
3712be3f | 1397 | if (getConn() != NULL) { |
c0941a6a | 1398 | ACLFilledChecklist ch(NULL, request, NULL); |
057f5854 | 1399 | ch.src_addr = request->client_addr; |
1400 | ch.my_addr = request->my_addr; | |
425de4c8 | 1401 | tos_t tos = aclMapTOS(Ip::Qos::TheConfig.tosToClient, &ch); |
3712be3f | 1402 | if (tos) |
425de4c8 AJ |
1403 | Ip::Qos::setSockTos(getConn()->fd, tos); |
1404 | } | |
1405 | } | |
1406 | ||
1407 | if (!calloutContext->nfmarkToClientDone) { | |
1408 | calloutContext->nfmarkToClientDone = true; | |
1409 | if (getConn() != NULL) { | |
1410 | ACLFilledChecklist ch(NULL, request, NULL); | |
1411 | ch.src_addr = request->client_addr; | |
1412 | ch.my_addr = request->my_addr; | |
1413 | nfmark_t mark = aclMapNfmark(Ip::Qos::TheConfig.nfmarkToClient, &ch); | |
1414 | if (mark) | |
1415 | Ip::Qos::setSockNfmark(getConn()->fd, mark); | |
3712be3f | 1416 | } |
057f5854 | 1417 | } |
1418 | ||
e0c0d54c CT |
1419 | if (!calloutContext->sslBumpCheckDone) { |
1420 | calloutContext->sslBumpCheckDone = true; | |
1421 | if (calloutContext->sslBumpAccessCheck()) | |
1422 | return; | |
1423 | /* else no ssl bump required*/ | |
1424 | } | |
1425 | ||
de31d06f | 1426 | cbdataReferenceDone(calloutContext->http); |
1427 | delete calloutContext; | |
1428 | calloutContext = NULL; | |
de31d06f | 1429 | #if HEADERS_LOG |
1430 | ||
1431 | headersLog(0, 1, request->method, request); | |
1432 | #endif | |
1433 | ||
58d7150d | 1434 | debugs(83, 3, HERE << "calling processRequest()"); |
de31d06f | 1435 | processRequest(); |
3ff65596 AR |
1436 | |
1437 | #if ICAP_CLIENT | |
1438 | Adaptation::Icap::History::Pointer ih = request->icapHistory(); | |
1439 | if (ih != NULL) | |
1440 | ih->logType = logType; | |
1441 | #endif | |
de31d06f | 1442 | } |
1443 | ||
32d002cb | 1444 | #if !_USE_INLINE_ |
86a2f789 | 1445 | #include "client_side_request.cci" |
1446 | #endif | |
de31d06f | 1447 | |
a83c6ed6 | 1448 | #if USE_ADAPTATION |
a22e6cd3 AR |
1449 | /// Initiate an asynchronous adaptation transaction which will call us back. |
1450 | void | |
1451 | ClientHttpRequest::startAdaptation(const Adaptation::ServiceGroupPointer &g) | |
3b299123 | 1452 | { |
a22e6cd3 | 1453 | debugs(85, 3, HERE << "adaptation needed for " << this); |
a83c6ed6 AR |
1454 | assert(!virginHeadSource); |
1455 | assert(!adaptedBodySource); | |
a22e6cd3 | 1456 | virginHeadSource = initiateAdaptation( |
4cb2536f | 1457 | new Adaptation::Iterator(request, NULL, g)); |
a83c6ed6 | 1458 | |
e1381638 | 1459 | // we could try to guess whether we can bypass this adaptation |
a22e6cd3 | 1460 | // initiation failure, but it should not really happen |
4299f876 | 1461 | Must(initiated(virginHeadSource)); |
de31d06f | 1462 | } |
1463 | ||
1464 | void | |
3af10ac0 | 1465 | ClientHttpRequest::noteAdaptationAnswer(const Adaptation::Answer &answer) |
de31d06f | 1466 | { |
de31d06f | 1467 | assert(cbdataReferenceValid(this)); // indicates bug |
3af10ac0 AR |
1468 | clearAdaptation(virginHeadSource); |
1469 | assert(!adaptedBodySource); | |
1470 | ||
1471 | switch (answer.kind) { | |
1472 | case Adaptation::Answer::akForward: | |
1473 | handleAdaptedHeader(answer.message); | |
1474 | break; | |
1475 | ||
1476 | case Adaptation::Answer::akBlock: | |
1477 | handleAdaptationBlock(answer); | |
1478 | break; | |
1479 | ||
1480 | case Adaptation::Answer::akError: | |
1481 | handleAdaptationFailure(ERR_DETAIL_CLT_REQMOD_ABORT, !answer.final); | |
1482 | break; | |
1483 | } | |
1484 | } | |
1485 | ||
1486 | void | |
ec4d1a1d | 1487 | ClientHttpRequest::handleAdaptedHeader(HttpMsg *msg) |
3af10ac0 | 1488 | { |
5f8252d2 | 1489 | assert(msg); |
1490 | ||
b044675d | 1491 | if (HttpRequest *new_req = dynamic_cast<HttpRequest*>(msg)) { |
200ac359 | 1492 | /* |
5f8252d2 | 1493 | * Replace the old request with the new request. |
200ac359 | 1494 | */ |
6dd9f4bd | 1495 | HTTPMSGUNLOCK(request); |
1496 | request = HTTPMSGLOCK(new_req); | |
200ac359 | 1497 | /* |
1498 | * Store the new URI for logging | |
1499 | */ | |
1500 | xfree(uri); | |
1501 | uri = xstrdup(urlCanonical(request)); | |
1502 | setLogUri(this, urlCanonicalClean(request)); | |
914b89a2 | 1503 | assert(request->method.id()); |
b044675d | 1504 | } else if (HttpReply *new_rep = dynamic_cast<HttpReply*>(msg)) { |
1505 | debugs(85,3,HERE << "REQMOD reply is HTTP reply"); | |
1506 | ||
5f8252d2 | 1507 | // subscribe to receive reply body |
1508 | if (new_rep->body_pipe != NULL) { | |
a83c6ed6 | 1509 | adaptedBodySource = new_rep->body_pipe; |
d222a56c HN |
1510 | int consumer_ok = adaptedBodySource->setConsumerIfNotLate(this); |
1511 | assert(consumer_ok); | |
5f8252d2 | 1512 | } |
1513 | ||
b044675d | 1514 | clientStreamNode *node = (clientStreamNode *)client_stream.tail->prev->data; |
1515 | clientReplyContext *repContext = dynamic_cast<clientReplyContext *>(node->data.getRaw()); | |
1516 | repContext->createStoreEntry(request->method, request->flags); | |
1517 | ||
1518 | EBIT_CLR(storeEntry()->flags, ENTRY_FWD_HDR_WAIT); | |
1519 | request_satisfaction_mode = true; | |
1520 | request_satisfaction_offset = 0; | |
1521 | storeEntry()->replaceHttpReply(new_rep); | |
97ae5196 | 1522 | storeEntry()->timestampsSet(); |
cb4c4288 | 1523 | |
a83c6ed6 | 1524 | if (!adaptedBodySource) // no body |
cb4c4288 | 1525 | storeEntry()->complete(); |
b044675d | 1526 | clientGetMoreData(node, this); |
200ac359 | 1527 | } |
de31d06f | 1528 | |
5f8252d2 | 1529 | // we are done with getting headers (but may be receiving body) |
a83c6ed6 | 1530 | clearAdaptation(virginHeadSource); |
5f8252d2 | 1531 | |
b044675d | 1532 | if (!request_satisfaction_mode) |
1533 | doCallouts(); | |
de31d06f | 1534 | } |
1535 | ||
1536 | void | |
3af10ac0 | 1537 | ClientHttpRequest::handleAdaptationBlock(const Adaptation::Answer &answer) |
de31d06f | 1538 | { |
3af10ac0 AR |
1539 | request->detailError(ERR_ACCESS_DENIED, ERR_DETAIL_REQMOD_BLOCK); |
1540 | AclMatchedName = answer.ruleId.termedBuf(); | |
1541 | assert(calloutContext); | |
1542 | calloutContext->clientAccessCheckDone(ACCESS_DENIED); | |
1543 | AclMatchedName = NULL; | |
de31d06f | 1544 | } |
1545 | ||
1546 | void | |
1cf238db | 1547 | ClientHttpRequest::noteMoreBodyDataAvailable(BodyPipe::Pointer) |
de31d06f | 1548 | { |
5f8252d2 | 1549 | assert(request_satisfaction_mode); |
a83c6ed6 | 1550 | assert(adaptedBodySource != NULL); |
5f8252d2 | 1551 | |
4ce0e99b | 1552 | if (const size_t contentSize = adaptedBodySource->buf().contentSize()) { |
a83c6ed6 | 1553 | BodyPipeCheckout bpc(*adaptedBodySource); |
4ce0e99b | 1554 | const StoreIOBuffer ioBuf(&bpc.buf, request_satisfaction_offset); |
5f8252d2 | 1555 | storeEntry()->write(ioBuf); |
1556 | // assume can write everything | |
1557 | request_satisfaction_offset += contentSize; | |
4ce0e99b | 1558 | bpc.buf.consume(contentSize); |
5f8252d2 | 1559 | bpc.checkIn(); |
1560 | } | |
1561 | ||
a83c6ed6 | 1562 | if (adaptedBodySource->exhausted()) |
5f8252d2 | 1563 | endRequestSatisfaction(); |
1564 | // else wait for more body data | |
de31d06f | 1565 | } |
1566 | ||
1567 | void | |
1cf238db | 1568 | ClientHttpRequest::noteBodyProductionEnded(BodyPipe::Pointer) |
de31d06f | 1569 | { |
a83c6ed6 AR |
1570 | assert(!virginHeadSource); |
1571 | if (adaptedBodySource != NULL) { // did not end request satisfaction yet | |
26ac0430 | 1572 | // We do not expect more because noteMoreBodyDataAvailable always |
5f8252d2 | 1573 | // consumes everything. We do not even have a mechanism to consume |
1574 | // leftovers after noteMoreBodyDataAvailable notifications seize. | |
a83c6ed6 | 1575 | assert(adaptedBodySource->exhausted()); |
5f8252d2 | 1576 | endRequestSatisfaction(); |
1577 | } | |
1578 | } | |
3b299123 | 1579 | |
5f8252d2 | 1580 | void |
26ac0430 AJ |
1581 | ClientHttpRequest::endRequestSatisfaction() |
1582 | { | |
5f8252d2 | 1583 | debugs(85,4, HERE << this << " ends request satisfaction"); |
1584 | assert(request_satisfaction_mode); | |
a83c6ed6 | 1585 | stopConsumingFrom(adaptedBodySource); |
3b299123 | 1586 | |
5f8252d2 | 1587 | // TODO: anything else needed to end store entry formation correctly? |
1588 | storeEntry()->complete(); | |
1589 | } | |
de31d06f | 1590 | |
5f8252d2 | 1591 | void |
1cf238db | 1592 | ClientHttpRequest::noteBodyProducerAborted(BodyPipe::Pointer) |
5f8252d2 | 1593 | { |
a83c6ed6 AR |
1594 | assert(!virginHeadSource); |
1595 | stopConsumingFrom(adaptedBodySource); | |
eae3a9a6 AR |
1596 | |
1597 | debugs(85,3, HERE << "REQMOD body production failed"); | |
1598 | if (request_satisfaction_mode) { // too late to recover or serve an error | |
1599 | request->detailError(ERR_ICAP_FAILURE, ERR_DETAIL_CLT_REQMOD_RESP_BODY); | |
1600 | const int fd = getConn()->fd; | |
1601 | Must(fd >= 0); | |
1602 | comm_close(fd); // drastic, but we may be writing a response already | |
1603 | } else { | |
1604 | handleAdaptationFailure(ERR_DETAIL_CLT_REQMOD_REQ_BODY); | |
1605 | } | |
5f8252d2 | 1606 | } |
3b299123 | 1607 | |
5f8252d2 | 1608 | void |
64b66b76 | 1609 | ClientHttpRequest::handleAdaptationFailure(int errDetail, bool bypassable) |
5f8252d2 | 1610 | { |
a83c6ed6 | 1611 | debugs(85,3, HERE << "handleAdaptationFailure(" << bypassable << ")"); |
3b299123 | 1612 | |
5f8252d2 | 1613 | const bool usedStore = storeEntry() && !storeEntry()->isEmpty(); |
1614 | const bool usedPipe = request->body_pipe != NULL && | |
26ac0430 | 1615 | request->body_pipe->consumedSize() > 0; |
3b299123 | 1616 | |
9d4d7c5e | 1617 | if (bypassable && !usedStore && !usedPipe) { |
1618 | debugs(85,3, HERE << "ICAP REQMOD callout failed, bypassing: " << calloutContext); | |
5f8252d2 | 1619 | if (calloutContext) |
1620 | doCallouts(); | |
1621 | return; | |
1622 | } | |
3b299123 | 1623 | |
5f8252d2 | 1624 | debugs(85,3, HERE << "ICAP REQMOD callout failed, responding with error"); |
3b299123 | 1625 | |
5f8252d2 | 1626 | clientStreamNode *node = (clientStreamNode *)client_stream.tail->prev->data; |
1627 | clientReplyContext *repContext = dynamic_cast<clientReplyContext *>(node->data.getRaw()); | |
1628 | assert(repContext); | |
de31d06f | 1629 | |
26ac0430 | 1630 | // The original author of the code also wanted to pass an errno to |
5f8252d2 | 1631 | // setReplyToError, but it seems unlikely that the errno reflects the |
1632 | // true cause of the error at this point, so I did not pass it. | |
b7ac5457 | 1633 | Ip::Address noAddr; |
b70ba605 | 1634 | noAddr.SetNoAddr(); |
1cf238db | 1635 | ConnStateData * c = getConn(); |
5f8252d2 | 1636 | repContext->setReplyToError(ERR_ICAP_FAILURE, HTTP_INTERNAL_SERVER_ERROR, |
26ac0430 AJ |
1637 | request->method, NULL, |
1638 | (c != NULL ? c->peer : noAddr), request, NULL, | |
a33a428a | 1639 | (c != NULL && c->auth_user_request != NULL ? |
26ac0430 | 1640 | c->auth_user_request : request->auth_user_request)); |
de31d06f | 1641 | |
64b66b76 CT |
1642 | request->detailError(ERR_ICAP_FAILURE, errDetail); |
1643 | ||
5f8252d2 | 1644 | node = (clientStreamNode *)client_stream.tail->data; |
1645 | clientStreamRead(node, this, node->readBuffer); | |
de31d06f | 1646 | } |
1647 | ||
1648 | #endif |