]>
Commit | Line | Data |
---|---|---|
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" | |
5c336a3b | 65 | #include "comm/Connection.h" |
ec41b64c | 66 | #include "comm/Write.h" |
27bc2077 AJ |
67 | #include "compat/inet_pton.h" |
68 | #include "fde.h" | |
31971e6a | 69 | #include "format/Token.h" |
ce394734 | 70 | #include "HttpHdrCc.h" |
27bc2077 AJ |
71 | #include "HttpReply.h" |
72 | #include "HttpRequest.h" | |
425de4c8 | 73 | #include "ip/QosConfig.h" |
27bc2077 AJ |
74 | #include "MemObject.h" |
75 | #include "ProtoPort.h" | |
76 | #include "Store.h" | |
77 | #include "SquidTime.h" | |
78 | #include "wordlist.h" | |
64b66b76 | 79 | #include "err_detail_type.h" |
4db984be CT |
80 | #if USE_SSL |
81 | #include "ssl/support.h" | |
82 | #endif | |
3ff65596 AR |
83 | |
84 | ||
edce4d98 | 85 | #if LINGERING_CLOSE |
86 | #define comm_close comm_lingering_close | |
87 | #endif | |
88 | ||
89 | static const char *const crlf = "\r\n"; | |
90 | ||
609c620a | 91 | #if FOLLOW_X_FORWARDED_FOR |
2efeb0b7 | 92 | static void clientFollowXForwardedForCheck(allow_t answer, void *data); |
609c620a | 93 | #endif /* FOLLOW_X_FORWARDED_FOR */ |
3d674977 | 94 | |
8e2745f4 | 95 | CBDATA_CLASS_INIT(ClientRequestContext); |
96 | ||
97 | void * | |
98 | ClientRequestContext::operator new (size_t size) | |
99 | { | |
100 | assert (size == sizeof(ClientRequestContext)); | |
101 | CBDATA_INIT_TYPE(ClientRequestContext); | |
102 | ClientRequestContext *result = cbdataAlloc(ClientRequestContext); | |
aa625860 | 103 | return result; |
8e2745f4 | 104 | } |
62e76326 | 105 | |
8e2745f4 | 106 | void |
107 | ClientRequestContext::operator delete (void *address) | |
108 | { | |
109 | ClientRequestContext *t = static_cast<ClientRequestContext *>(address); | |
aa625860 | 110 | cbdataFree(t); |
8e2745f4 | 111 | } |
112 | ||
edce4d98 | 113 | /* Local functions */ |
edce4d98 | 114 | /* other */ |
2efeb0b7 | 115 | static void clientAccessCheckDoneWrapper(allow_t, void *); |
e0c0d54c | 116 | #if USE_SSL |
2efeb0b7 | 117 | static void sslBumpAccessCheckDoneWrapper(allow_t, void *); |
e0c0d54c | 118 | #endif |
59a1efb2 | 119 | static int clientHierarchical(ClientHttpRequest * http); |
120 | static void clientInterpretRequestHeaders(ClientHttpRequest * http); | |
de31d06f | 121 | static RH clientRedirectDoneWrapper; |
2efeb0b7 | 122 | static void checkNoCacheDoneWrapper(allow_t, void *); |
e6ccf245 | 123 | extern "C" CSR clientGetMoreData; |
124 | extern "C" CSS clientReplyStatus; | |
125 | extern "C" CSD clientReplyDetach; | |
528b2c61 | 126 | static void checkFailureRatio(err_type, hier_code); |
edce4d98 | 127 | |
8e2745f4 | 128 | ClientRequestContext::~ClientRequestContext() |
129 | { | |
de31d06f | 130 | /* |
a546b04b | 131 | * Release our "lock" on our parent, ClientHttpRequest, if we |
132 | * still have one | |
de31d06f | 133 | */ |
a546b04b | 134 | |
135 | if (http) | |
136 | cbdataReferenceDone(http); | |
62e76326 | 137 | |
5f8252d2 | 138 | debugs(85,3, HERE << this << " ClientRequestContext destructed"); |
8e2745f4 | 139 | } |
140 | ||
4e2eb5c3 | 141 | ClientRequestContext::ClientRequestContext(ClientHttpRequest *anHttp) : http(cbdataReference(anHttp)), acl_checklist (NULL), redirect_state (REDIRECT_NONE) |
edce4d98 | 142 | { |
57abaac0 | 143 | http_access_done = false; |
144 | redirect_done = false; | |
145 | no_cache_done = false; | |
146 | interpreted_req_hdrs = false; | |
e0c0d54c CT |
147 | #if USE_SSL |
148 | sslBumpCheckDone = false; | |
149 | #endif | |
0b86805b | 150 | debugs(85,3, HERE << this << " ClientRequestContext constructed"); |
edce4d98 | 151 | } |
152 | ||
528b2c61 | 153 | CBDATA_CLASS_INIT(ClientHttpRequest); |
8e2745f4 | 154 | |
528b2c61 | 155 | void * |
156 | ClientHttpRequest::operator new (size_t size) | |
157 | { | |
158 | assert (size == sizeof (ClientHttpRequest)); | |
159 | CBDATA_INIT_TYPE(ClientHttpRequest); | |
160 | ClientHttpRequest *result = cbdataAlloc(ClientHttpRequest); | |
aa625860 | 161 | return result; |
528b2c61 | 162 | } |
163 | ||
62e76326 | 164 | void |
528b2c61 | 165 | ClientHttpRequest::operator delete (void *address) |
166 | { | |
aa625860 | 167 | ClientHttpRequest *t = static_cast<ClientHttpRequest *>(address); |
168 | cbdataFree(t); | |
528b2c61 | 169 | } |
170 | ||
26ac0430 | 171 | ClientHttpRequest::ClientHttpRequest(ConnStateData * aConn) : |
a83c6ed6 | 172 | #if USE_ADAPTATION |
26ac0430 | 173 | AsyncJob("ClientHttpRequest"), |
1cf238db | 174 | #endif |
26ac0430 | 175 | loggingEntry_(NULL) |
528b2c61 | 176 | { |
1cf238db | 177 | start_time = current_time; |
a0355e95 | 178 | setConn(aConn); |
a14f38d0 | 179 | al.tcpClient = clientConnection = aConn->clientConnection; |
a0355e95 | 180 | dlinkAdd(this, &active, &ClientActiveRequests); |
a83c6ed6 | 181 | #if USE_ADAPTATION |
b044675d | 182 | request_satisfaction_mode = false; |
183 | #endif | |
e0c0d54c CT |
184 | #if USE_SSL |
185 | sslBumpNeed = needUnknown; | |
186 | #endif | |
528b2c61 | 187 | } |
188 | ||
0655fa4d | 189 | /* |
190 | * returns true if client specified that the object must come from the cache | |
191 | * without contacting origin server | |
192 | */ | |
193 | bool | |
194 | ClientHttpRequest::onlyIfCached()const | |
195 | { | |
196 | assert(request); | |
197 | return request->cache_control && | |
4ce6e3b5 | 198 | request->cache_control->onlyIfCached(); |
0655fa4d | 199 | } |
200 | ||
528b2c61 | 201 | /* |
202 | * This function is designed to serve a fairly specific purpose. | |
203 | * Occasionally our vBNS-connected caches can talk to each other, but not | |
204 | * the rest of the world. Here we try to detect frequent failures which | |
205 | * make the cache unusable (e.g. DNS lookup and connect() failures). If | |
206 | * the failure:success ratio goes above 1.0 then we go into "hit only" | |
207 | * mode where we only return UDP_HIT or UDP_MISS_NOFETCH. Neighbors | |
208 | * will only fetch HITs from us if they are using the ICP protocol. We | |
209 | * stay in this mode for 5 minutes. | |
26ac0430 | 210 | * |
528b2c61 | 211 | * Duane W., Sept 16, 1996 |
212 | */ | |
213 | ||
214 | #define FAILURE_MODE_TIME 300 | |
215 | ||
216 | static void | |
217 | checkFailureRatio(err_type etype, hier_code hcode) | |
218 | { | |
219 | static double magic_factor = 100.0; | |
220 | double n_good; | |
221 | double n_bad; | |
62e76326 | 222 | |
528b2c61 | 223 | if (hcode == HIER_NONE) |
62e76326 | 224 | return; |
225 | ||
528b2c61 | 226 | n_good = magic_factor / (1.0 + request_failure_ratio); |
62e76326 | 227 | |
528b2c61 | 228 | n_bad = magic_factor - n_good; |
62e76326 | 229 | |
528b2c61 | 230 | switch (etype) { |
62e76326 | 231 | |
528b2c61 | 232 | case ERR_DNS_FAIL: |
62e76326 | 233 | |
528b2c61 | 234 | case ERR_CONNECT_FAIL: |
3712be3f | 235 | case ERR_SECURE_CONNECT_FAIL: |
62e76326 | 236 | |
528b2c61 | 237 | case ERR_READ_ERROR: |
62e76326 | 238 | n_bad++; |
239 | break; | |
240 | ||
528b2c61 | 241 | default: |
62e76326 | 242 | n_good++; |
528b2c61 | 243 | } |
62e76326 | 244 | |
528b2c61 | 245 | request_failure_ratio = n_bad / n_good; |
62e76326 | 246 | |
528b2c61 | 247 | if (hit_only_mode_until > squid_curtime) |
62e76326 | 248 | return; |
249 | ||
528b2c61 | 250 | if (request_failure_ratio < 1.0) |
62e76326 | 251 | return; |
252 | ||
bf8fe701 | 253 | debugs(33, 0, "Failure Ratio at "<< std::setw(4)<< |
254 | std::setprecision(3) << request_failure_ratio); | |
62e76326 | 255 | |
bf8fe701 | 256 | debugs(33, 0, "Going into hit-only-mode for " << |
257 | FAILURE_MODE_TIME / 60 << " minutes..."); | |
62e76326 | 258 | |
528b2c61 | 259 | hit_only_mode_until = squid_curtime + FAILURE_MODE_TIME; |
62e76326 | 260 | |
528b2c61 | 261 | request_failure_ratio = 0.8; /* reset to something less than 1.0 */ |
262 | } | |
263 | ||
264 | ClientHttpRequest::~ClientHttpRequest() | |
265 | { | |
bf8fe701 | 266 | debugs(33, 3, "httpRequestFree: " << uri); |
72bdee4c | 267 | PROF_start(httpRequestFree); |
62e76326 | 268 | |
5f8252d2 | 269 | // Even though freeResources() below may destroy the request, |
270 | // we no longer set request->body_pipe to NULL here | |
271 | // because we did not initiate that pipe (ConnStateData did) | |
62e76326 | 272 | |
528b2c61 | 273 | /* the ICP check here was erroneous |
26ac0430 | 274 | * - StoreEntry::releaseRequest was always called if entry was valid |
528b2c61 | 275 | */ |
276 | assert(logType < LOG_TYPE_MAX); | |
9ce7856a | 277 | |
528b2c61 | 278 | logRequest(); |
9ce7856a | 279 | |
0976f8db | 280 | loggingEntry(NULL); |
281 | ||
528b2c61 | 282 | if (request) |
62e76326 | 283 | checkFailureRatio(request->errType, al.hier.code); |
284 | ||
528b2c61 | 285 | freeResources(); |
62e76326 | 286 | |
a83c6ed6 AR |
287 | #if USE_ADAPTATION |
288 | announceInitiatorAbort(virginHeadSource); | |
9d4d7c5e | 289 | |
a83c6ed6 AR |
290 | if (adaptedBodySource != NULL) |
291 | stopConsumingFrom(adaptedBodySource); | |
de31d06f | 292 | #endif |
9ce7856a | 293 | |
de31d06f | 294 | if (calloutContext) |
295 | delete calloutContext; | |
296 | ||
be364179 AJ |
297 | clientConnection = NULL; |
298 | ||
26ac0430 AJ |
299 | if (conn_) |
300 | cbdataReferenceDone(conn_); | |
1cf238db | 301 | |
528b2c61 | 302 | /* moving to the next connection is handled by the context free */ |
303 | dlinkDelete(&active, &ClientActiveRequests); | |
9ce7856a | 304 | |
72bdee4c | 305 | PROF_stop(httpRequestFree); |
528b2c61 | 306 | } |
62e76326 | 307 | |
11992b6f AJ |
308 | /** |
309 | * Create a request and kick it off | |
310 | * | |
311 | * \retval 0 success | |
312 | * \retval -1 failure | |
313 | * | |
69660be0 | 314 | * TODO: Pass in the buffers to be used in the inital Read request, as they are |
315 | * determined by the user | |
edce4d98 | 316 | */ |
11992b6f | 317 | int |
60745f24 | 318 | clientBeginRequest(const HttpRequestMethod& method, char const *url, CSCB * streamcallback, |
0655fa4d | 319 | CSD * streamdetach, ClientStreamData streamdata, HttpHeader const *header, |
62e76326 | 320 | char *tailbuf, size_t taillen) |
edce4d98 | 321 | { |
322 | size_t url_sz; | |
a0355e95 | 323 | ClientHttpRequest *http = new ClientHttpRequest(NULL); |
190154cf | 324 | HttpRequest *request; |
528b2c61 | 325 | StoreIOBuffer tempBuffer; |
1cf238db | 326 | http->start_time = current_time; |
edce4d98 | 327 | /* this is only used to adjust the connection offset in client_side.c */ |
328 | http->req_sz = 0; | |
c8be6d7b | 329 | tempBuffer.length = taillen; |
330 | tempBuffer.data = tailbuf; | |
edce4d98 | 331 | /* client stream setup */ |
332 | clientStreamInit(&http->client_stream, clientGetMoreData, clientReplyDetach, | |
0655fa4d | 333 | clientReplyStatus, new clientReplyContext(http), streamcallback, |
62e76326 | 334 | streamdetach, streamdata, tempBuffer); |
edce4d98 | 335 | /* make it visible in the 'current acctive requests list' */ |
edce4d98 | 336 | /* Set flags */ |
a46d2c0e | 337 | /* internal requests only makes sense in an |
338 | * accelerator today. TODO: accept flags ? */ | |
339 | http->flags.accel = 1; | |
edce4d98 | 340 | /* allow size for url rewriting */ |
341 | url_sz = strlen(url) + Config.appendDomainLen + 5; | |
e6ccf245 | 342 | http->uri = (char *)xcalloc(url_sz, 1); |
edce4d98 | 343 | strcpy(http->uri, url); |
344 | ||
c21ad0f5 | 345 | if ((request = HttpRequest::CreateFromUrlAndMethod(http->uri, method)) == NULL) { |
bf8fe701 | 346 | debugs(85, 5, "Invalid URL: " << http->uri); |
62e76326 | 347 | return -1; |
edce4d98 | 348 | } |
62e76326 | 349 | |
69660be0 | 350 | /* |
11992b6f | 351 | * now update the headers in request with our supplied headers. urlParse |
69660be0 | 352 | * should return a blank header set, but we use Update to be sure of |
353 | * correctness. | |
edce4d98 | 354 | */ |
355 | if (header) | |
a9925b40 | 356 | request->header.update(header, NULL); |
62e76326 | 357 | |
edce4d98 | 358 | http->log_uri = xstrdup(urlCanonicalClean(request)); |
62e76326 | 359 | |
edce4d98 | 360 | /* http struct now ready */ |
361 | ||
69660be0 | 362 | /* |
363 | * build new header list *? TODO | |
edce4d98 | 364 | */ |
365 | request->flags.accelerated = http->flags.accel; | |
62e76326 | 366 | |
a46d2c0e | 367 | request->flags.internalclient = 1; |
368 | ||
369 | /* this is an internally created | |
370 | * request, not subject to acceleration | |
371 | * target overrides */ | |
69660be0 | 372 | /* |
373 | * FIXME? Do we want to detect and handle internal requests of internal | |
374 | * objects ? | |
375 | */ | |
edce4d98 | 376 | |
377 | /* Internally created requests cannot have bodies today */ | |
378 | request->content_length = 0; | |
62e76326 | 379 | |
cc192b50 | 380 | request->client_addr.SetNoAddr(); |
62e76326 | 381 | |
3d674977 AJ |
382 | #if FOLLOW_X_FORWARDED_FOR |
383 | request->indirect_client_addr.SetNoAddr(); | |
384 | #endif /* FOLLOW_X_FORWARDED_FOR */ | |
26ac0430 | 385 | |
cc192b50 | 386 | request->my_addr.SetNoAddr(); /* undefined for internal requests */ |
62e76326 | 387 | |
cc192b50 | 388 | request->my_addr.SetPort(0); |
62e76326 | 389 | |
3872be7c AJ |
390 | /* Our version is HTTP/1.1 */ |
391 | HttpVersion http_ver(1,1); | |
edce4d98 | 392 | request->http_ver = http_ver; |
62e76326 | 393 | |
6dd9f4bd | 394 | http->request = HTTPMSGLOCK(request); |
edce4d98 | 395 | |
396 | /* optional - skip the access check ? */ | |
de31d06f | 397 | http->calloutContext = new ClientRequestContext(http); |
398 | ||
57abaac0 | 399 | http->calloutContext->http_access_done = false; |
de31d06f | 400 | |
57abaac0 | 401 | http->calloutContext->redirect_done = true; |
de31d06f | 402 | |
57abaac0 | 403 | http->calloutContext->no_cache_done = true; |
de31d06f | 404 | |
405 | http->doCallouts(); | |
62e76326 | 406 | |
edce4d98 | 407 | return 0; |
408 | } | |
409 | ||
de31d06f | 410 | bool |
411 | ClientRequestContext::httpStateIsValid() | |
412 | { | |
413 | ClientHttpRequest *http_ = http; | |
414 | ||
415 | if (cbdataReferenceValid(http_)) | |
416 | return true; | |
417 | ||
418 | http = NULL; | |
419 | ||
420 | cbdataReferenceDone(http_); | |
421 | ||
422 | return false; | |
423 | } | |
424 | ||
3d674977 AJ |
425 | #if FOLLOW_X_FORWARDED_FOR |
426 | /** | |
a9044668 | 427 | * clientFollowXForwardedForCheck() checks the content of X-Forwarded-For: |
3d674977 AJ |
428 | * against the followXFF ACL, or cleans up and passes control to |
429 | * clientAccessCheck(). | |
d096ace1 AJ |
430 | * |
431 | * The trust model here is a little ambiguous. So to clarify the logic: | |
432 | * - we may always use the direct client address as the client IP. | |
a9044668 | 433 | * - these trust tests merey tell whether we trust given IP enough to believe the |
d096ace1 AJ |
434 | * IP string which it appended to the X-Forwarded-For: header. |
435 | * - if at any point we don't trust what an IP adds we stop looking. | |
436 | * - at that point the current contents of indirect_client_addr are the value set | |
437 | * by the last previously trusted IP. | |
438 | * ++ indirect_client_addr contains the remote direct client from the trusted peers viewpoint. | |
3d674977 | 439 | */ |
3d674977 | 440 | static void |
2efeb0b7 | 441 | clientFollowXForwardedForCheck(allow_t answer, void *data) |
3d674977 AJ |
442 | { |
443 | ClientRequestContext *calloutContext = (ClientRequestContext *) data; | |
3d674977 AJ |
444 | |
445 | if (!calloutContext->httpStateIsValid()) | |
446 | return; | |
447 | ||
d096ace1 AJ |
448 | ClientHttpRequest *http = calloutContext->http; |
449 | HttpRequest *request = http->request; | |
450 | ||
3d674977 AJ |
451 | /* |
452 | * answer should be be ACCESS_ALLOWED or ACCESS_DENIED if we are | |
453 | * called as a result of ACL checks, or -1 if we are called when | |
454 | * there's nothing left to do. | |
455 | */ | |
456 | if (answer == ACCESS_ALLOWED && | |
26ac0430 | 457 | request->x_forwarded_for_iterator.size () != 0) { |
d096ace1 | 458 | |
3d674977 | 459 | /* |
d096ace1 AJ |
460 | * Remove the last comma-delimited element from the |
461 | * x_forwarded_for_iterator and use it to repeat the cycle. | |
462 | */ | |
3d674977 AJ |
463 | const char *p; |
464 | const char *asciiaddr; | |
465 | int l; | |
b7ac5457 | 466 | Ip::Address addr; |
bb790702 | 467 | p = request->x_forwarded_for_iterator.termedBuf(); |
3d674977 AJ |
468 | l = request->x_forwarded_for_iterator.size(); |
469 | ||
470 | /* | |
471 | * XXX x_forwarded_for_iterator should really be a list of | |
472 | * IP addresses, but it's a String instead. We have to | |
473 | * walk backwards through the String, biting off the last | |
474 | * comma-delimited part each time. As long as the data is in | |
475 | * a String, we should probably implement and use a variant of | |
476 | * strListGetItem() that walks backwards instead of forwards | |
477 | * through a comma-separated list. But we don't even do that; | |
478 | * we just do the work in-line here. | |
479 | */ | |
480 | /* skip trailing space and commas */ | |
481 | while (l > 0 && (p[l-1] == ',' || xisspace(p[l-1]))) | |
482 | l--; | |
483 | request->x_forwarded_for_iterator.cut(l); | |
484 | /* look for start of last item in list */ | |
485 | while (l > 0 && ! (p[l-1] == ',' || xisspace(p[l-1]))) | |
486 | l--; | |
487 | asciiaddr = p+l; | |
fafd0efa | 488 | if ((addr = asciiaddr)) { |
3d674977 AJ |
489 | request->indirect_client_addr = addr; |
490 | request->x_forwarded_for_iterator.cut(l); | |
d096ace1 AJ |
491 | calloutContext->acl_checklist = clientAclChecklistCreate(Config.accessList.followXFF, http); |
492 | if (!Config.onoff.acl_uses_indirect_client) { | |
493 | /* override the default src_addr tested if we have to go deeper than one level into XFF */ | |
494 | Filled(calloutContext->acl_checklist)->src_addr = request->indirect_client_addr; | |
3d674977 | 495 | } |
d096ace1 | 496 | calloutContext->acl_checklist->nonBlockingCheck(clientFollowXForwardedForCheck, data); |
3d674977 AJ |
497 | return; |
498 | } | |
499 | } /*if (answer == ACCESS_ALLOWED && | |
500 | request->x_forwarded_for_iterator.size () != 0)*/ | |
501 | ||
502 | /* clean up, and pass control to clientAccessCheck */ | |
26ac0430 | 503 | if (Config.onoff.log_uses_indirect_client) { |
3d674977 AJ |
504 | /* |
505 | * Ensure that the access log shows the indirect client | |
506 | * instead of the direct client. | |
507 | */ | |
508 | ConnStateData *conn = http->getConn(); | |
509 | conn->log_addr = request->indirect_client_addr; | |
510 | } | |
511 | request->x_forwarded_for_iterator.clean(); | |
512 | request->flags.done_follow_x_forwarded_for = 1; | |
513 | ||
d096ace1 AJ |
514 | if (answer != ACCESS_ALLOWED && answer != ACCESS_DENIED) { |
515 | debugs(28, DBG_CRITICAL, "ERROR: Processing X-Forwarded-For. Stopping at IP address: " << request->indirect_client_addr ); | |
493d3865 AJ |
516 | } |
517 | ||
518 | /* process actual access ACL as normal. */ | |
519 | calloutContext->clientAccessCheck(); | |
3d674977 AJ |
520 | } |
521 | #endif /* FOLLOW_X_FORWARDED_FOR */ | |
522 | ||
fe97983f AJ |
523 | static void |
524 | hostHeaderIpVerifyWrapper(const ipcache_addrs* ia, const DnsLookupDetails &dns, void *data) | |
525 | { | |
526 | ClientRequestContext *c = static_cast<ClientRequestContext*>(data); | |
527 | c->hostHeaderIpVerify(ia, dns); | |
528 | } | |
529 | ||
530 | void | |
531 | ClientRequestContext::hostHeaderIpVerify(const ipcache_addrs* ia, const DnsLookupDetails &dns) | |
532 | { | |
533 | Comm::ConnectionPointer clientConn = http->getConn()->clientConnection; | |
534 | ||
535 | // note the DNS details for the transaction stats. | |
536 | http->request->recordLookup(dns); | |
537 | ||
538 | if (ia != NULL && ia->count > 0) { | |
539 | // Is the NAT destination IP in DNS? | |
540 | for (int i = 0; i < ia->count; i++) { | |
541 | if (clientConn->local.matchIPAddr(ia->in_addrs[i]) == 0) { | |
542 | debugs(85, 3, HERE << "validate IP " << clientConn->local << " possible from Host:"); | |
543 | http->doCallouts(); | |
544 | return; | |
545 | } | |
546 | debugs(85, 3, HERE << "validate IP " << clientConn->local << " non-match from Host: IP " << ia->in_addrs[i]); | |
547 | } | |
548 | } | |
549 | debugs(85, 3, HERE << "FAIL: validate IP " << clientConn->local << " possible from Host:"); | |
05b28f84 | 550 | hostHeaderVerifyFailed("local IP", "any domain IP"); |
fe97983f AJ |
551 | } |
552 | ||
553 | void | |
05b28f84 | 554 | ClientRequestContext::hostHeaderVerifyFailed(const char *A, const char *B) |
fe97983f | 555 | { |
8f489ad7 AJ |
556 | debugs(85, DBG_IMPORTANT, "SECURITY ALERT: Host header forgery detected on " << |
557 | http->getConn()->clientConnection << " (" << A << " does not match " << B << ")"); | |
558 | debugs(85, DBG_IMPORTANT, "SECURITY ALERT: By user agent: " << http->request->header.getStr(HDR_USER_AGENT)); | |
559 | debugs(85, DBG_IMPORTANT, "SECURITY ALERT: on URL: " << urlCanonical(http->request)); | |
fe97983f AJ |
560 | |
561 | // IP address validation for Host: failed. reject the connection. | |
562 | clientStreamNode *node = (clientStreamNode *)http->client_stream.tail->prev->data; | |
563 | clientReplyContext *repContext = dynamic_cast<clientReplyContext *>(node->data.getRaw()); | |
564 | assert (repContext); | |
565 | repContext->setReplyToError(ERR_INVALID_REQ, HTTP_CONFLICT, | |
566 | http->request->method, NULL, | |
567 | http->getConn()->clientConnection->remote, | |
568 | http->request, | |
569 | NULL, | |
570 | #if USE_AUTH | |
571 | http->getConn() != NULL && http->getConn()->auth_user_request != NULL ? | |
572 | http->getConn()->auth_user_request : http->request->auth_user_request); | |
573 | #else | |
574 | NULL); | |
575 | #endif | |
576 | node = (clientStreamNode *)http->client_stream.tail->data; | |
577 | clientStreamRead(node, http, node->readBuffer); | |
578 | } | |
579 | ||
580 | void | |
581 | ClientRequestContext::hostHeaderVerify() | |
582 | { | |
583 | // Require a Host: header. | |
584 | const char *host = http->request->header.getStr(HDR_HOST); | |
fe97983f AJ |
585 | |
586 | if (!host) { | |
587 | // TODO: dump out the HTTP/1.1 error about missing host header. | |
588 | // otherwise this is fine, can't forge a header value when its not even set. | |
589 | debugs(85, 3, HERE << "validate skipped with no Host: header present."); | |
590 | http->doCallouts(); | |
591 | return; | |
592 | } | |
593 | ||
8f489ad7 AJ |
594 | if (http->request->flags.internal) { |
595 | // TODO: kill this when URL handling allows partial URLs out of accel mode | |
596 | // and we no longer screw with the URL just to add our internal host there | |
597 | debugs(85, 6, HERE << "validate skipped due to internal composite URL."); | |
598 | http->doCallouts(); | |
599 | return; | |
600 | } | |
601 | ||
fe97983f AJ |
602 | // Locate if there is a port attached, strip ready for IP lookup |
603 | char *portStr = NULL; | |
91663dce AJ |
604 | char *hostB = xstrdup(host); |
605 | host = hostB; | |
fe97983f AJ |
606 | if (host[0] == '[') { |
607 | // IPv6 literal. | |
fe97983f | 608 | portStr = strchr(hostB, ']'); |
91663dce AJ |
609 | if (portStr && *(++portStr) != ':') { |
610 | portStr = NULL; | |
fe97983f | 611 | } |
91663dce | 612 | } else { |
fe97983f | 613 | // Domain or IPv4 literal with port |
fe97983f | 614 | portStr = strrchr(hostB, ':'); |
91663dce AJ |
615 | } |
616 | ||
617 | uint16_t port = 0; | |
618 | if (portStr) { | |
619 | *portStr = '\0'; // strip the ':' | |
620 | if (*(++portStr) != '\0') | |
621 | port = xatoi(portStr); | |
fe97983f AJ |
622 | } |
623 | ||
624 | debugs(85, 3, HERE << "validate host=" << host << ", port=" << port << ", portStr=" << (portStr?portStr:"NULL")); | |
625 | if (http->request->flags.intercepted || http->request->flags.spoof_client_ip) { | |
ba4d9da0 | 626 | // verify the Host: port (if any) matches the apparent destination |
fe97983f | 627 | if (portStr && port != http->getConn()->clientConnection->local.GetPort()) { |
05b28f84 AJ |
628 | debugs(85, 3, HERE << "FAIL on validate port " << http->getConn()->clientConnection->local.GetPort() << |
629 | " matches Host: port " << port << " (" << portStr << ")"); | |
630 | hostHeaderVerifyFailed("intercepted port", portStr); | |
ba4d9da0 AJ |
631 | } else { |
632 | // XXX: match the scheme default port against the apparent destination | |
fe97983f | 633 | |
ba4d9da0 AJ |
634 | // verify the destination DNS is one of the Host: headers IPs |
635 | ipcache_nbgethostbyname(host, hostHeaderIpVerifyWrapper, this); | |
636 | } | |
06059513 | 637 | } else if (!Config.onoff.hostStrictVerify) { |
90529125 AJ |
638 | debugs(85, 3, HERE << "validate skipped."); |
639 | http->doCallouts(); | |
8f489ad7 AJ |
640 | } else if (strlen(host) != strlen(http->request->GetHost())) { |
641 | // Verify forward-proxy requested URL domain matches the Host: header | |
642 | debugs(85, 3, HERE << "FAIL on validate URL domain length " << http->request->GetHost() << " matches Host: " << host); | |
643 | hostHeaderVerifyFailed(host, http->request->GetHost()); | |
644 | } else if (matchDomainName(host, http->request->GetHost()) != 0) { | |
ba4d9da0 | 645 | // Verify forward-proxy requested URL domain matches the Host: header |
fe97983f | 646 | debugs(85, 3, HERE << "FAIL on validate URL domain " << http->request->GetHost() << " matches Host: " << host); |
05b28f84 | 647 | hostHeaderVerifyFailed(host, http->request->GetHost()); |
ba4d9da0 AJ |
648 | } else if (portStr && port != http->request->port) { |
649 | // Verify forward-proxy requested URL domain matches the Host: header | |
650 | debugs(85, 3, HERE << "FAIL on validate URL port " << http->request->port << " matches Host: port " << portStr); | |
651 | hostHeaderVerifyFailed("URL port", portStr); | |
65d2fdbf | 652 | } else if (!portStr && http->request->method != METHOD_CONNECT && http->request->port != urlDefaultPort(http->request->protocol)) { |
ba4d9da0 | 653 | // Verify forward-proxy requested URL domain matches the Host: header |
65d2fdbf | 654 | // Special case: we don't have a default-port to check for CONNECT. Assume URL is correct. |
ba4d9da0 AJ |
655 | debugs(85, 3, HERE << "FAIL on validate URL port " << http->request->port << " matches Host: default port " << urlDefaultPort(http->request->protocol)); |
656 | hostHeaderVerifyFailed("URL port", "default port"); | |
657 | } else { | |
658 | // Okay no problem. | |
659 | debugs(85, 3, HERE << "validate passed."); | |
660 | http->doCallouts(); | |
fe97983f | 661 | } |
ba4d9da0 | 662 | safe_free(hostB); |
fe97983f AJ |
663 | } |
664 | ||
edce4d98 | 665 | /* This is the entry point for external users of the client_side routines */ |
666 | void | |
de31d06f | 667 | ClientRequestContext::clientAccessCheck() |
edce4d98 | 668 | { |
3d674977 AJ |
669 | #if FOLLOW_X_FORWARDED_FOR |
670 | if (!http->request->flags.done_follow_x_forwarded_for && | |
26ac0430 AJ |
671 | Config.accessList.followXFF && |
672 | http->request->header.has(HDR_X_FORWARDED_FOR)) { | |
d096ace1 AJ |
673 | |
674 | /* we always trust the direct client address for actual use */ | |
675 | http->request->indirect_client_addr = http->request->client_addr; | |
fafd0efa | 676 | http->request->indirect_client_addr.SetPort(0); |
d096ace1 AJ |
677 | |
678 | /* setup the XFF iterator for processing */ | |
679 | http->request->x_forwarded_for_iterator = http->request->header.getList(HDR_X_FORWARDED_FOR); | |
680 | ||
681 | /* begin by checking to see if we trust direct client enough to walk XFF */ | |
682 | acl_checklist = clientAclChecklistCreate(Config.accessList.followXFF, http); | |
683 | acl_checklist->nonBlockingCheck(clientFollowXForwardedForCheck, this); | |
3d674977 AJ |
684 | return; |
685 | } | |
686 | #endif /* FOLLOW_X_FORWARDED_FOR */ | |
493d3865 | 687 | |
b50e327b AJ |
688 | if (Config.accessList.http) { |
689 | acl_checklist = clientAclChecklistCreate(Config.accessList.http, http); | |
690 | acl_checklist->nonBlockingCheck(clientAccessCheckDoneWrapper, this); | |
691 | } else { | |
692 | debugs(0, DBG_CRITICAL, "No http_access configuration found. This will block ALL traffic"); | |
693 | clientAccessCheckDone(ACCESS_DENIED); | |
694 | } | |
edce4d98 | 695 | } |
696 | ||
533493da AJ |
697 | /** |
698 | * Identical in operation to clientAccessCheck() but performed later using different configured ACL list. | |
699 | * The default here is to allow all. Since the earlier http_access should do a default deny all. | |
700 | * This check is just for a last-minute denial based on adapted request headers. | |
701 | */ | |
702 | void | |
703 | ClientRequestContext::clientAccessCheck2() | |
704 | { | |
705 | if (Config.accessList.adapted_http) { | |
706 | acl_checklist = clientAclChecklistCreate(Config.accessList.adapted_http, http); | |
707 | acl_checklist->nonBlockingCheck(clientAccessCheckDoneWrapper, this); | |
708 | } else { | |
327e2131 | 709 | debugs(85, 2, HERE << "No adapted_http_access configuration. default: ALLOW"); |
533493da AJ |
710 | clientAccessCheckDone(ACCESS_ALLOWED); |
711 | } | |
712 | } | |
713 | ||
edce4d98 | 714 | void |
2efeb0b7 | 715 | clientAccessCheckDoneWrapper(allow_t answer, void *data) |
edce4d98 | 716 | { |
de31d06f | 717 | ClientRequestContext *calloutContext = (ClientRequestContext *) data; |
fbade053 | 718 | |
de31d06f | 719 | if (!calloutContext->httpStateIsValid()) |
62e76326 | 720 | return; |
62e76326 | 721 | |
de31d06f | 722 | calloutContext->clientAccessCheckDone(answer); |
723 | } | |
724 | ||
725 | void | |
2efeb0b7 | 726 | ClientRequestContext::clientAccessCheckDone(const allow_t &answer) |
de31d06f | 727 | { |
728 | acl_checklist = NULL; | |
edce4d98 | 729 | err_type page_id; |
730 | http_status status; | |
26ac0430 AJ |
731 | debugs(85, 2, "The request " << |
732 | RequestMethodStr(http->request->method) << " " << | |
2efeb0b7 | 733 | http->uri << " is " << answer << |
26ac0430 AJ |
734 | ", because it matched '" << |
735 | (AclMatchedName ? AclMatchedName : "NO ACL's") << "'" ); | |
f5691f9c | 736 | |
2f1431ea AJ |
737 | #if USE_AUTH |
738 | char const *proxy_auth_msg = "<null>"; | |
94a396a3 | 739 | if (http->getConn() != NULL && http->getConn()->auth_user_request != NULL) |
f5691f9c | 740 | proxy_auth_msg = http->getConn()->auth_user_request->denyMessage("<null>"); |
741 | else if (http->request->auth_user_request != NULL) | |
742 | proxy_auth_msg = http->request->auth_user_request->denyMessage("<null>"); | |
2f1431ea | 743 | #endif |
62e76326 | 744 | |
309347ef AJ |
745 | if (answer != ACCESS_ALLOWED && answer != ACCESS_AUTH_EXPIRED_OK) { |
746 | // auth has a grace period where credentials can be expired but okay not to challenge. | |
747 | ||
748 | /* Send an auth challenge or error */ | |
749 | // XXX: do we still need aclIsProxyAuth() ? | |
750 | bool auth_challenge = (answer == ACCESS_AUTH_REQUIRED || answer == ACCESS_AUTH_EXPIRED_BAD || aclIsProxyAuth(AclMatchedName)); | |
bf8fe701 | 751 | debugs(85, 5, "Access Denied: " << http->uri); |
752 | debugs(85, 5, "AclMatchedName = " << (AclMatchedName ? AclMatchedName : "<null>")); | |
2f1431ea | 753 | #if USE_AUTH |
309347ef | 754 | if (auth_challenge) |
bf8fe701 | 755 | debugs(33, 5, "Proxy Auth Message = " << (proxy_auth_msg ? proxy_auth_msg : "<null>")); |
2f1431ea | 756 | #endif |
9ce7856a | 757 | |
62e76326 | 758 | /* |
759 | * NOTE: get page_id here, based on AclMatchedName because if | |
760 | * USE_DELAY_POOLS is enabled, then AclMatchedName gets clobbered in | |
761 | * the clientCreateStoreEntry() call just below. Pedro Ribeiro | |
762 | * <pribeiro@isel.pt> | |
763 | */ | |
7dfddb79 | 764 | page_id = aclGetDenyInfoPage(&Config.denyInfoList, AclMatchedName, answer != ACCESS_AUTH_REQUIRED); |
9ce7856a | 765 | |
62e76326 | 766 | http->logType = LOG_TCP_DENIED; |
767 | ||
309347ef | 768 | if (auth_challenge) { |
2f1431ea | 769 | #if USE_AUTH |
62e76326 | 770 | if (!http->flags.accel) { |
771 | /* Proxy authorisation needed */ | |
772 | status = HTTP_PROXY_AUTHENTICATION_REQUIRED; | |
773 | } else { | |
774 | /* WWW authorisation needed */ | |
775 | status = HTTP_UNAUTHORIZED; | |
776 | } | |
2f1431ea AJ |
777 | #else |
778 | // need auth, but not possible to do. | |
779 | status = HTTP_FORBIDDEN; | |
780 | #endif | |
62e76326 | 781 | if (page_id == ERR_NONE) |
782 | page_id = ERR_CACHE_ACCESS_DENIED; | |
783 | } else { | |
784 | status = HTTP_FORBIDDEN; | |
785 | ||
786 | if (page_id == ERR_NONE) | |
787 | page_id = ERR_ACCESS_DENIED; | |
788 | } | |
789 | ||
de31d06f | 790 | clientStreamNode *node = (clientStreamNode *)http->client_stream.tail->prev->data; |
0655fa4d | 791 | clientReplyContext *repContext = dynamic_cast<clientReplyContext *>(node->data.getRaw()); |
792 | assert (repContext); | |
b7ac5457 | 793 | Ip::Address tmpnoaddr; |
26ac0430 | 794 | tmpnoaddr.SetNoAddr(); |
0655fa4d | 795 | repContext->setReplyToError(page_id, status, |
796 | http->request->method, NULL, | |
73c36fd9 | 797 | http->getConn() != NULL ? http->getConn()->clientConnection->remote : tmpnoaddr, |
cc192b50 | 798 | http->request, |
799 | NULL, | |
2f1431ea | 800 | #if USE_AUTH |
a33a428a | 801 | http->getConn() != NULL && http->getConn()->auth_user_request != NULL ? |
cc192b50 | 802 | http->getConn()->auth_user_request : http->request->auth_user_request); |
2f1431ea AJ |
803 | #else |
804 | NULL); | |
805 | #endif | |
6b355e5a | 806 | http->getConn()->flags.readMore = true; // resume any pipeline reads. |
62e76326 | 807 | node = (clientStreamNode *)http->client_stream.tail->data; |
808 | clientStreamRead(node, http, node->readBuffer); | |
a546b04b | 809 | return; |
edce4d98 | 810 | } |
de31d06f | 811 | |
309347ef | 812 | /* ACCESS_ALLOWED (or auth in grace period ACCESS_AUTH_EXPIRED_OK) continues here ... */ |
de31d06f | 813 | safe_free(http->uri); |
814 | ||
815 | http->uri = xstrdup(urlCanonical(http->request)); | |
816 | ||
817 | http->doCallouts(); | |
818 | } | |
819 | ||
a83c6ed6 | 820 | #if USE_ADAPTATION |
de31d06f | 821 | void |
79628299 | 822 | ClientHttpRequest::noteAdaptationAclCheckDone(Adaptation::ServiceGroupPointer g) |
de31d06f | 823 | { |
a83c6ed6 | 824 | debugs(93,3,HERE << this << " adaptationAclCheckDone called"); |
6ec67de9 | 825 | |
e1381638 | 826 | #if ICAP_CLIENT |
79628299 | 827 | Adaptation::Icap::History::Pointer ih = request->icapHistory(); |
e1381638 | 828 | if (ih != NULL) { |
79628299 CT |
829 | if (getConn() != NULL) { |
830 | ih->rfc931 = getConn()->clientConnection->rfc931; | |
e1381638 | 831 | #if USE_SSL |
79628299 CT |
832 | assert(getConn()->clientConnection != NULL); |
833 | ih->ssluser = sslGetUserEmail(fd_table[getConn()->clientConnection->fd].ssl); | |
e1381638 | 834 | #endif |
3ff65596 | 835 | } |
79628299 CT |
836 | ih->log_uri = log_uri; |
837 | ih->req_sz = req_sz; | |
3ff65596 AR |
838 | } |
839 | #endif | |
840 | ||
a22e6cd3 AR |
841 | if (!g) { |
842 | debugs(85,3, HERE << "no adaptation needed"); | |
79628299 | 843 | doCallouts(); |
5f8252d2 | 844 | return; |
845 | } | |
de31d06f | 846 | |
79628299 | 847 | startAdaptation(g); |
edce4d98 | 848 | } |
849 | ||
de31d06f | 850 | #endif |
851 | ||
14cc8559 | 852 | static void |
2efeb0b7 | 853 | clientRedirectAccessCheckDone(allow_t answer, void *data) |
14cc8559 | 854 | { |
855 | ClientRequestContext *context = (ClientRequestContext *)data; | |
59a1efb2 | 856 | ClientHttpRequest *http = context->http; |
14cc8559 | 857 | context->acl_checklist = NULL; |
858 | ||
859 | if (answer == ACCESS_ALLOWED) | |
de31d06f | 860 | redirectStart(http, clientRedirectDoneWrapper, context); |
14cc8559 | 861 | else |
de31d06f | 862 | context->clientRedirectDone(NULL); |
14cc8559 | 863 | } |
864 | ||
de31d06f | 865 | void |
866 | ClientRequestContext::clientRedirectStart() | |
14cc8559 | 867 | { |
48e7baac | 868 | debugs(33, 5, HERE << "'" << http->uri << "'"); |
14cc8559 | 869 | |
14cc8559 | 870 | if (Config.accessList.redirector) { |
de31d06f | 871 | acl_checklist = clientAclChecklistCreate(Config.accessList.redirector, http); |
872 | acl_checklist->nonBlockingCheck(clientRedirectAccessCheckDone, this); | |
14cc8559 | 873 | } else |
de31d06f | 874 | redirectStart(http, clientRedirectDoneWrapper, this); |
14cc8559 | 875 | } |
876 | ||
edce4d98 | 877 | static int |
59a1efb2 | 878 | clientHierarchical(ClientHttpRequest * http) |
edce4d98 | 879 | { |
880 | const char *url = http->uri; | |
190154cf | 881 | HttpRequest *request = http->request; |
60745f24 | 882 | HttpRequestMethod method = request->method; |
edce4d98 | 883 | const wordlist *p = NULL; |
884 | ||
69660be0 | 885 | /* |
886 | * IMS needs a private key, so we can use the hierarchy for IMS only if our | |
887 | * neighbors support private keys | |
888 | */ | |
62e76326 | 889 | |
edce4d98 | 890 | if (request->flags.ims && !neighbors_do_private_keys) |
62e76326 | 891 | return 0; |
892 | ||
69660be0 | 893 | /* |
894 | * This is incorrect: authenticating requests can be sent via a hierarchy | |
06b97e72 | 895 | * (they can even be cached if the correct headers are set on the reply) |
edce4d98 | 896 | */ |
897 | if (request->flags.auth) | |
62e76326 | 898 | return 0; |
899 | ||
edce4d98 | 900 | if (method == METHOD_TRACE) |
62e76326 | 901 | return 1; |
902 | ||
edce4d98 | 903 | if (method != METHOD_GET) |
62e76326 | 904 | return 0; |
905 | ||
edce4d98 | 906 | /* scan hierarchy_stoplist */ |
907 | for (p = Config.hierarchy_stoplist; p; p = p->next) | |
62e76326 | 908 | if (strstr(url, p->key)) |
909 | return 0; | |
910 | ||
edce4d98 | 911 | if (request->flags.loopdetect) |
62e76326 | 912 | return 0; |
913 | ||
0c3d3f65 | 914 | if (request->protocol == AnyP::PROTO_HTTP) |
62e76326 | 915 | return httpCachable(method); |
916 | ||
0c3d3f65 | 917 | if (request->protocol == AnyP::PROTO_GOPHER) |
62e76326 | 918 | return gopherCachable(request); |
919 | ||
39a19cb7 | 920 | if (request->protocol == AnyP::PROTO_CACHE_OBJECT) |
62e76326 | 921 | return 0; |
922 | ||
edce4d98 | 923 | return 1; |
924 | } | |
925 | ||
46a1f562 HN |
926 | static void |
927 | clientCheckPinning(ClientHttpRequest * http) | |
928 | { | |
929 | HttpRequest *request = http->request; | |
930 | HttpHeader *req_hdr = &request->header; | |
931 | ConnStateData *http_conn = http->getConn(); | |
932 | ||
933 | /* Internal requests such as those from ESI includes may be without | |
934 | * a client connection | |
935 | */ | |
936 | if (!http_conn) | |
f54f527e | 937 | return; |
46a1f562 HN |
938 | |
939 | request->flags.connection_auth_disabled = http_conn->port->connection_auth_disabled; | |
940 | if (!request->flags.connection_auth_disabled) { | |
73c36fd9 | 941 | if (Comm::IsConnOpen(http_conn->pinning.serverConnection)) { |
46a1f562 HN |
942 | if (http_conn->pinning.auth) { |
943 | request->flags.connection_auth = 1; | |
944 | request->flags.auth = 1; | |
945 | } else { | |
946 | request->flags.connection_proxy_auth = 1; | |
947 | } | |
b1cf2350 AJ |
948 | // These should already be linked correctly. |
949 | assert(request->clientConnectionManager == http_conn); | |
46a1f562 HN |
950 | } |
951 | } | |
952 | ||
953 | /* check if connection auth is used, and flag as candidate for pinning | |
954 | * in such case. | |
955 | * Note: we may need to set flags.connection_auth even if the connection | |
956 | * is already pinned if it was pinned earlier due to proxy auth | |
957 | */ | |
958 | if (!request->flags.connection_auth) { | |
959 | if (req_hdr->has(HDR_AUTHORIZATION) || req_hdr->has(HDR_PROXY_AUTHORIZATION)) { | |
960 | HttpHeaderPos pos = HttpHeaderInitPos; | |
961 | HttpHeaderEntry *e; | |
962 | int may_pin = 0; | |
963 | while ((e = req_hdr->getEntry(&pos))) { | |
964 | if (e->id == HDR_AUTHORIZATION || e->id == HDR_PROXY_AUTHORIZATION) { | |
965 | const char *value = e->value.rawBuf(); | |
966 | if (strncasecmp(value, "NTLM ", 5) == 0 | |
967 | || | |
968 | strncasecmp(value, "Negotiate ", 10) == 0 | |
969 | || | |
970 | strncasecmp(value, "Kerberos ", 9) == 0) { | |
971 | if (e->id == HDR_AUTHORIZATION) { | |
972 | request->flags.connection_auth = 1; | |
973 | may_pin = 1; | |
974 | } else { | |
975 | request->flags.connection_proxy_auth = 1; | |
976 | may_pin = 1; | |
977 | } | |
978 | } | |
979 | } | |
980 | } | |
981 | if (may_pin && !request->pinnedConnection()) { | |
b1cf2350 AJ |
982 | // These should already be linked correctly. Just need the ServerConnection to pinn. |
983 | assert(request->clientConnectionManager == http_conn); | |
46a1f562 HN |
984 | } |
985 | } | |
986 | } | |
987 | } | |
988 | ||
edce4d98 | 989 | static void |
59a1efb2 | 990 | clientInterpretRequestHeaders(ClientHttpRequest * http) |
edce4d98 | 991 | { |
190154cf | 992 | HttpRequest *request = http->request; |
0ef77270 | 993 | HttpHeader *req_hdr = &request->header; |
edce4d98 | 994 | int no_cache = 0; |
edce4d98 | 995 | const char *str; |
62e76326 | 996 | |
edce4d98 | 997 | request->imslen = -1; |
a9925b40 | 998 | request->ims = req_hdr->getTime(HDR_IF_MODIFIED_SINCE); |
62e76326 | 999 | |
edce4d98 | 1000 | if (request->ims > 0) |
62e76326 | 1001 | request->flags.ims = 1; |
1002 | ||
432bc83c HN |
1003 | if (!request->flags.ignore_cc) { |
1004 | if (req_hdr->has(HDR_PRAGMA)) { | |
1005 | String s = req_hdr->getList(HDR_PRAGMA); | |
62e76326 | 1006 | |
432bc83c HN |
1007 | if (strListIsMember(&s, "no-cache", ',')) |
1008 | no_cache++; | |
30abd221 | 1009 | |
432bc83c HN |
1010 | s.clean(); |
1011 | } | |
62e76326 | 1012 | |
432bc83c | 1013 | if (request->cache_control) |
4ce6e3b5 | 1014 | if (request->cache_control->noCache()) |
432bc83c | 1015 | no_cache++; |
62e76326 | 1016 | |
432bc83c HN |
1017 | /* |
1018 | * Work around for supporting the Reload button in IE browsers when Squid | |
1019 | * is used as an accelerator or transparent proxy, by turning accelerated | |
1020 | * IMS request to no-cache requests. Now knows about IE 5.5 fix (is | |
1021 | * actually only fixed in SP1, but we can't tell whether we are talking to | |
1022 | * SP1 or not so all 5.5 versions are treated 'normally'). | |
1023 | */ | |
1024 | if (Config.onoff.ie_refresh) { | |
1025 | if (http->flags.accel && request->flags.ims) { | |
1026 | if ((str = req_hdr->getStr(HDR_USER_AGENT))) { | |
1027 | if (strstr(str, "MSIE 5.01") != NULL) | |
1028 | no_cache++; | |
1029 | else if (strstr(str, "MSIE 5.0") != NULL) | |
1030 | no_cache++; | |
1031 | else if (strstr(str, "MSIE 4.") != NULL) | |
1032 | no_cache++; | |
1033 | else if (strstr(str, "MSIE 3.") != NULL) | |
1034 | no_cache++; | |
1035 | } | |
62e76326 | 1036 | } |
1037 | } | |
edce4d98 | 1038 | } |
914b89a2 | 1039 | |
1040 | if (request->method == METHOD_OTHER) { | |
26ac0430 | 1041 | no_cache++; |
60745f24 | 1042 | } |
62e76326 | 1043 | |
edce4d98 | 1044 | if (no_cache) { |
626096be | 1045 | #if USE_HTTP_VIOLATIONS |
62e76326 | 1046 | |
1047 | if (Config.onoff.reload_into_ims) | |
1048 | request->flags.nocache_hack = 1; | |
1049 | else if (refresh_nocache_hack) | |
1050 | request->flags.nocache_hack = 1; | |
1051 | else | |
edce4d98 | 1052 | #endif |
62e76326 | 1053 | |
1054 | request->flags.nocache = 1; | |
edce4d98 | 1055 | } |
62e76326 | 1056 | |
0ef77270 | 1057 | /* ignore range header in non-GETs or non-HEADs */ |
1058 | if (request->method == METHOD_GET || request->method == METHOD_HEAD) { | |
56713d9a AR |
1059 | // XXX: initialize if we got here without HttpRequest::parseHeader() |
1060 | if (!request->range) | |
1061 | request->range = req_hdr->getRange(); | |
62e76326 | 1062 | |
1063 | if (request->range) { | |
1064 | request->flags.range = 1; | |
1065 | clientStreamNode *node = (clientStreamNode *)http->client_stream.tail->data; | |
1066 | /* XXX: This is suboptimal. We should give the stream the range set, | |
1067 | * and thereby let the top of the stream set the offset when the | |
26ac0430 | 1068 | * size becomes known. As it is, we will end up requesting from 0 |
62e76326 | 1069 | * for evey -X range specification. |
1070 | * RBC - this may be somewhat wrong. We should probably set the range | |
1071 | * iter up at this point. | |
1072 | */ | |
1073 | node->readBuffer.offset = request->range->lowestOffset(0); | |
1074 | http->range_iter.pos = request->range->begin(); | |
1075 | http->range_iter.valid = true; | |
1076 | } | |
edce4d98 | 1077 | } |
62e76326 | 1078 | |
0ef77270 | 1079 | /* Only HEAD and GET requests permit a Range or Request-Range header. |
1080 | * If these headers appear on any other type of request, delete them now. | |
1081 | */ | |
1082 | else { | |
1083 | req_hdr->delById(HDR_RANGE); | |
1084 | req_hdr->delById(HDR_REQUEST_RANGE); | |
56713d9a | 1085 | delete request->range; |
0ef77270 | 1086 | request->range = NULL; |
1087 | } | |
1088 | ||
a9925b40 | 1089 | if (req_hdr->has(HDR_AUTHORIZATION)) |
62e76326 | 1090 | request->flags.auth = 1; |
1091 | ||
46a1f562 | 1092 | clientCheckPinning(http); |
d67acb4e | 1093 | |
edce4d98 | 1094 | if (request->login[0] != '\0') |
62e76326 | 1095 | request->flags.auth = 1; |
1096 | ||
a9925b40 | 1097 | if (req_hdr->has(HDR_VIA)) { |
30abd221 | 1098 | String s = req_hdr->getList(HDR_VIA); |
62e76326 | 1099 | /* |
3c4fcf0f | 1100 | * ThisCache cannot be a member of Via header, "1.1 ThisCache" can. |
62e76326 | 1101 | * Note ThisCache2 has a space prepended to the hostname so we don't |
1102 | * accidentally match super-domains. | |
1103 | */ | |
1104 | ||
1105 | if (strListIsSubstr(&s, ThisCache2, ',')) { | |
1106 | debugObj(33, 1, "WARNING: Forwarding loop detected for:\n", | |
1107 | request, (ObjPackMethod) & httpRequestPack); | |
1108 | request->flags.loopdetect = 1; | |
1109 | } | |
1110 | ||
21f6708d | 1111 | #if USE_FORW_VIA_DB |
bb790702 | 1112 | fvdbCountVia(s.termedBuf()); |
62e76326 | 1113 | |
edce4d98 | 1114 | #endif |
62e76326 | 1115 | |
30abd221 | 1116 | s.clean(); |
edce4d98 | 1117 | } |
62e76326 | 1118 | |
21f6708d | 1119 | #if USE_FORW_VIA_DB |
62e76326 | 1120 | |
a9925b40 | 1121 | if (req_hdr->has(HDR_X_FORWARDED_FOR)) { |
30abd221 | 1122 | String s = req_hdr->getList(HDR_X_FORWARDED_FOR); |
bb790702 | 1123 | fvdbCountForw(s.termedBuf()); |
30abd221 | 1124 | s.clean(); |
edce4d98 | 1125 | } |
62e76326 | 1126 | |
edce4d98 | 1127 | #endif |
62e76326 | 1128 | |
610ee341 | 1129 | request->flags.cachable = http->request->cacheable(); |
62e76326 | 1130 | |
edce4d98 | 1131 | if (clientHierarchical(http)) |
62e76326 | 1132 | request->flags.hierarchical = 1; |
1133 | ||
bf8fe701 | 1134 | debugs(85, 5, "clientInterpretRequestHeaders: REQ_NOCACHE = " << |
1135 | (request->flags.nocache ? "SET" : "NOT SET")); | |
1136 | debugs(85, 5, "clientInterpretRequestHeaders: REQ_CACHABLE = " << | |
1137 | (request->flags.cachable ? "SET" : "NOT SET")); | |
1138 | debugs(85, 5, "clientInterpretRequestHeaders: REQ_HIERARCHICAL = " << | |
1139 | (request->flags.hierarchical ? "SET" : "NOT SET")); | |
62e76326 | 1140 | |
edce4d98 | 1141 | } |
1142 | ||
1143 | void | |
de31d06f | 1144 | clientRedirectDoneWrapper(void *data, char *result) |
edce4d98 | 1145 | { |
de31d06f | 1146 | ClientRequestContext *calloutContext = (ClientRequestContext *)data; |
db02222f | 1147 | |
de31d06f | 1148 | if (!calloutContext->httpStateIsValid()) |
62e76326 | 1149 | return; |
62e76326 | 1150 | |
de31d06f | 1151 | calloutContext->clientRedirectDone(result); |
1152 | } | |
1153 | ||
1154 | void | |
1155 | ClientRequestContext::clientRedirectDone(char *result) | |
1156 | { | |
190154cf | 1157 | HttpRequest *old_request = http->request; |
bf8fe701 | 1158 | debugs(85, 5, "clientRedirectDone: '" << http->uri << "' result=" << (result ? result : "NULL")); |
de31d06f | 1159 | assert(redirect_state == REDIRECT_PENDING); |
1160 | redirect_state = REDIRECT_DONE; | |
62e76326 | 1161 | |
edce4d98 | 1162 | if (result) { |
62e76326 | 1163 | http_status status = (http_status) atoi(result); |
1164 | ||
1165 | if (status == HTTP_MOVED_PERMANENTLY | |
1166 | || status == HTTP_MOVED_TEMPORARILY | |
1167 | || status == HTTP_SEE_OTHER | |
1168 | || status == HTTP_TEMPORARY_REDIRECT) { | |
1169 | char *t = result; | |
1170 | ||
1171 | if ((t = strchr(result, ':')) != NULL) { | |
1172 | http->redirect.status = status; | |
1173 | http->redirect.location = xstrdup(t + 1); | |
e5b677f0 | 1174 | // TODO: validate the URL produced here is RFC 2616 compliant absolute URI |
62e76326 | 1175 | } else { |
e5b677f0 AJ |
1176 | if (old_request->http_ver < HttpVersion(1,1)) |
1177 | debugs(85, DBG_CRITICAL, "ERROR: URL-rewrite produces invalid 302 redirect Location: " << result); | |
1178 | else | |
1179 | debugs(85, DBG_CRITICAL, "ERROR: URL-rewrite produces invalid 303 redirect Location: " << result); | |
62e76326 | 1180 | } |
e5b677f0 | 1181 | } else if (strcmp(result, http->uri)) { |
9be14530 AJ |
1182 | // XXX: validate the URL properly *without* generating a whole new request object right here. |
1183 | // XXX: the clone() should be done only AFTER we know the new URL is valid. | |
1184 | HttpRequest *new_request = old_request->clone(); | |
1185 | if (urlParse(old_request->method, result, new_request)) { | |
1186 | debugs(61,2, HERE << "URL-rewriter diverts URL from " << urlCanonical(old_request) << " to " << urlCanonical(new_request)); | |
1187 | ||
1188 | // update the new request to flag the re-writing was done on it | |
1189 | new_request->flags.redirected = 1; | |
1190 | ||
1191 | // unlink bodypipe from the old request. Not needed there any longer. | |
1192 | if (old_request->body_pipe != NULL) { | |
1193 | old_request->body_pipe = NULL; | |
1194 | debugs(61,2, HERE << "URL-rewriter diverts body_pipe " << new_request->body_pipe << | |
1195 | " from request " << old_request << " to " << new_request); | |
1196 | } | |
1197 | ||
1198 | // update the current working ClientHttpRequest fields | |
1199 | safe_free(http->uri); | |
1200 | http->uri = xstrdup(urlCanonical(new_request)); | |
1201 | HTTPMSGUNLOCK(old_request); | |
1202 | http->request = HTTPMSGLOCK(new_request); | |
1203 | } else { | |
e5b677f0 | 1204 | debugs(85, DBG_CRITICAL, "ERROR: URL-rewrite produces invalid request: " << |
c9fd01b4 | 1205 | old_request->method << " " << result << " " << old_request->http_ver); |
9be14530 AJ |
1206 | delete new_request; |
1207 | } | |
74b48915 | 1208 | } |
edce4d98 | 1209 | } |
62e76326 | 1210 | |
edce4d98 | 1211 | /* FIXME PIPELINE: This is innacurate during pipelining */ |
62e76326 | 1212 | |
73c36fd9 AJ |
1213 | if (http->getConn() != NULL && Comm::IsConnOpen(http->getConn()->clientConnection)) |
1214 | fd_note(http->getConn()->clientConnection->fd, http->uri); | |
62e76326 | 1215 | |
c8be6d7b | 1216 | assert(http->uri); |
62e76326 | 1217 | |
de31d06f | 1218 | http->doCallouts(); |
edce4d98 | 1219 | } |
1220 | ||
b50e327b AJ |
1221 | /** Test cache allow/deny configuration |
1222 | * Sets flags.cachable=1 if caching is not denied. | |
1223 | */ | |
edce4d98 | 1224 | void |
8e2745f4 | 1225 | ClientRequestContext::checkNoCache() |
edce4d98 | 1226 | { |
b50e327b AJ |
1227 | if (Config.accessList.noCache) { |
1228 | acl_checklist = clientAclChecklistCreate(Config.accessList.noCache, http); | |
1229 | acl_checklist->nonBlockingCheck(checkNoCacheDoneWrapper, this); | |
1230 | } else { | |
1231 | /* unless otherwise specified, we try to cache. */ | |
2efeb0b7 | 1232 | checkNoCacheDone(ACCESS_ALLOWED); |
b50e327b | 1233 | } |
edce4d98 | 1234 | } |
1235 | ||
de31d06f | 1236 | static void |
2efeb0b7 | 1237 | checkNoCacheDoneWrapper(allow_t answer, void *data) |
edce4d98 | 1238 | { |
de31d06f | 1239 | ClientRequestContext *calloutContext = (ClientRequestContext *) data; |
e4a67a80 | 1240 | |
de31d06f | 1241 | if (!calloutContext->httpStateIsValid()) |
1242 | return; | |
1243 | ||
1244 | calloutContext->checkNoCacheDone(answer); | |
8e2745f4 | 1245 | } |
4fb35c3c | 1246 | |
8e2745f4 | 1247 | void |
2efeb0b7 | 1248 | ClientRequestContext::checkNoCacheDone(const allow_t &answer) |
62e76326 | 1249 | { |
8e2745f4 | 1250 | acl_checklist = NULL; |
2efeb0b7 | 1251 | http->request->flags.cachable = (answer == ACCESS_ALLOWED); |
de31d06f | 1252 | http->doCallouts(); |
edce4d98 | 1253 | } |
1254 | ||
e0c0d54c CT |
1255 | #if USE_SSL |
1256 | bool | |
1257 | ClientRequestContext::sslBumpAccessCheck() | |
1258 | { | |
1259 | if (http->request->method == METHOD_CONNECT && | |
f8901ea9 | 1260 | Config.accessList.ssl_bump && http->getConn()->port->sslBump) { |
e0c0d54c CT |
1261 | debugs(85, 5, HERE << "SslBump possible, checking ACL"); |
1262 | ||
1263 | ACLFilledChecklist *acl_checklist = clientAclChecklistCreate(Config.accessList.ssl_bump, http); | |
1264 | acl_checklist->nonBlockingCheck(sslBumpAccessCheckDoneWrapper, this); | |
1265 | return true; | |
f8901ea9 | 1266 | } else { |
e0c0d54c CT |
1267 | http->sslBumpNeeded(false); |
1268 | return false; | |
1269 | } | |
1270 | } | |
1271 | ||
f8901ea9 | 1272 | /** |
e0c0d54c CT |
1273 | * A wrapper function to use the ClientRequestContext::sslBumpAccessCheckDone method |
1274 | * as ACLFilledChecklist callback | |
1275 | */ | |
1276 | static void | |
2efeb0b7 | 1277 | sslBumpAccessCheckDoneWrapper(allow_t answer, void *data) |
e0c0d54c CT |
1278 | { |
1279 | ClientRequestContext *calloutContext = static_cast<ClientRequestContext *>(data); | |
1280 | ||
1281 | if (!calloutContext->httpStateIsValid()) | |
1282 | return; | |
1283 | calloutContext->sslBumpAccessCheckDone(answer == ACCESS_ALLOWED); | |
1284 | } | |
1285 | ||
1286 | void | |
1287 | ClientRequestContext::sslBumpAccessCheckDone(bool doSslBump) | |
1288 | { | |
1289 | http->sslBumpNeeded(doSslBump); | |
1290 | http->doCallouts(); | |
1291 | } | |
1292 | #endif | |
1293 | ||
69660be0 | 1294 | /* |
1295 | * Identify requests that do not go through the store and client side stream | |
1296 | * and forward them to the appropriate location. All other requests, request | |
1297 | * them. | |
edce4d98 | 1298 | */ |
1299 | void | |
8e2745f4 | 1300 | ClientHttpRequest::processRequest() |
edce4d98 | 1301 | { |
60745f24 | 1302 | debugs(85, 4, "clientProcessRequest: " << RequestMethodStr(request->method) << " '" << uri << "'"); |
62e76326 | 1303 | |
31281814 | 1304 | if (request->method == METHOD_CONNECT && !redirect.status) { |
3712be3f | 1305 | #if USE_SSL |
31281814 AJ |
1306 | if (sslBumpNeeded()) { |
1307 | sslBumpStart(); | |
1308 | return; | |
1309 | } | |
3712be3f | 1310 | #endif |
62e76326 | 1311 | logType = LOG_TCP_MISS; |
f84dd7eb | 1312 | getConn()->stopReading(); // tunnels read for themselves |
11007d4b | 1313 | tunnelStart(this, &out.size, &al.http.code); |
62e76326 | 1314 | return; |
edce4d98 | 1315 | } |
62e76326 | 1316 | |
8e2745f4 | 1317 | httpStart(); |
1318 | } | |
1319 | ||
1320 | void | |
1321 | ClientHttpRequest::httpStart() | |
1322 | { | |
559da936 | 1323 | PROF_start(httpStart); |
8e2745f4 | 1324 | logType = LOG_TAG_NONE; |
38e16f92 | 1325 | debugs(85, 4, "ClientHttpRequest::httpStart: " << Format::log_tags[logType] << " for '" << uri << "'"); |
bf8fe701 | 1326 | |
edce4d98 | 1327 | /* no one should have touched this */ |
8e2745f4 | 1328 | assert(out.offset == 0); |
edce4d98 | 1329 | /* Use the Stream Luke */ |
8e2745f4 | 1330 | clientStreamNode *node = (clientStreamNode *)client_stream.tail->data; |
1331 | clientStreamRead(node, this, node->readBuffer); | |
559da936 | 1332 | PROF_stop(httpStart); |
edce4d98 | 1333 | } |
0655fa4d | 1334 | |
3712be3f | 1335 | #if USE_SSL |
1336 | ||
3712be3f | 1337 | bool |
26ac0430 AJ |
1338 | ClientHttpRequest::sslBumpNeeded() const |
1339 | { | |
e0c0d54c CT |
1340 | assert(sslBumpNeed != needUnknown); |
1341 | return (sslBumpNeed == needConfirmed); | |
1342 | } | |
3712be3f | 1343 | |
e0c0d54c CT |
1344 | void |
1345 | ClientHttpRequest::sslBumpNeeded(bool isNeeded) | |
1346 | { | |
1347 | debugs(83, 3, HERE << "sslBump required: "<< (isNeeded ? "Yes" : "No")); | |
1348 | sslBumpNeed = (isNeeded ? needConfirmed : needNot); | |
3712be3f | 1349 | } |
1350 | ||
1351 | // called when comm_write has completed | |
1352 | static void | |
e0d28505 | 1353 | SslBumpEstablish(const Comm::ConnectionPointer &, char *, size_t, comm_err_t errflag, int, void *data) |
3712be3f | 1354 | { |
1355 | ClientHttpRequest *r = static_cast<ClientHttpRequest*>(data); | |
1356 | debugs(85, 5, HERE << "responded to CONNECT: " << r << " ? " << errflag); | |
1357 | ||
1358 | assert(r && cbdataReferenceValid(r)); | |
1359 | r->sslBumpEstablish(errflag); | |
1360 | } | |
1361 | ||
1362 | void | |
1363 | ClientHttpRequest::sslBumpEstablish(comm_err_t errflag) | |
1364 | { | |
1365 | // Bail out quickly on COMM_ERR_CLOSING - close handlers will tidy up | |
1366 | if (errflag == COMM_ERR_CLOSING) | |
1367 | return; | |
1368 | ||
1369 | if (errflag) { | |
1fa35be8 | 1370 | debugs(85, 3, HERE << "CONNECT response failure in SslBump: " << errflag); |
bbc83914 | 1371 | getConn()->clientConnection->close(); |
3712be3f | 1372 | return; |
1373 | } | |
1374 | ||
95d2589c | 1375 | getConn()->switchToHttps(request->GetHost()); |
3712be3f | 1376 | } |
1377 | ||
1378 | void | |
1379 | ClientHttpRequest::sslBumpStart() | |
1380 | { | |
73c36fd9 | 1381 | debugs(85, 5, HERE << "Confirming CONNECT tunnel on FD " << getConn()->clientConnection); |
3712be3f | 1382 | // send an HTTP 200 response to kick client SSL negotiation |
73c36fd9 | 1383 | debugs(33, 7, HERE << "Confirming CONNECT tunnel on FD " << getConn()->clientConnection); |
3712be3f | 1384 | |
1385 | // TODO: Unify with tunnel.cc and add a Server(?) header | |
b0388924 | 1386 | static const char *const conn_established = "HTTP/1.1 200 Connection established\r\n\r\n"; |
ec41b64c AJ |
1387 | AsyncCall::Pointer call = commCbCall(85, 5, "ClientSocketContext::sslBumpEstablish", |
1388 | CommIoCbPtrFun(&SslBumpEstablish, this)); | |
73c36fd9 | 1389 | Comm::Write(getConn()->clientConnection, conn_established, strlen(conn_established), call, NULL); |
3712be3f | 1390 | } |
1391 | ||
1392 | #endif | |
1393 | ||
0655fa4d | 1394 | bool |
1395 | ClientHttpRequest::gotEnough() const | |
1396 | { | |
86a2f789 | 1397 | /** TODO: should be querying the stream. */ |
7173d5b0 | 1398 | int64_t contentLength = |
06a5ae20 | 1399 | memObject()->getReply()->bodySize(request->method); |
0655fa4d | 1400 | assert(contentLength >= 0); |
1401 | ||
1402 | if (out.offset < contentLength) | |
1403 | return false; | |
1404 | ||
1405 | return true; | |
1406 | } | |
1407 | ||
86a2f789 | 1408 | void |
1409 | ClientHttpRequest::storeEntry(StoreEntry *newEntry) | |
1410 | { | |
1411 | entry_ = newEntry; | |
1412 | } | |
1413 | ||
0976f8db | 1414 | void |
1415 | ClientHttpRequest::loggingEntry(StoreEntry *newEntry) | |
1416 | { | |
1417 | if (loggingEntry_) | |
97b5e68f | 1418 | loggingEntry_->unlock(); |
0976f8db | 1419 | |
1420 | loggingEntry_ = newEntry; | |
1421 | ||
1422 | if (loggingEntry_) | |
3d0ac046 | 1423 | loggingEntry_->lock(); |
0976f8db | 1424 | } |
86a2f789 | 1425 | |
de31d06f | 1426 | /* |
1427 | * doCallouts() - This function controls the order of "callout" | |
1428 | * executions, including non-blocking access control checks, the | |
1429 | * redirector, and ICAP. Previously, these callouts were chained | |
1430 | * together such that "clientAccessCheckDone()" would call | |
1431 | * "clientRedirectStart()" and so on. | |
1432 | * | |
1433 | * The ClientRequestContext (aka calloutContext) class holds certain | |
1434 | * state data for the callout/callback operations. Previously | |
1435 | * ClientHttpRequest would sort of hand off control to ClientRequestContext | |
1436 | * for a short time. ClientRequestContext would then delete itself | |
1437 | * and pass control back to ClientHttpRequest when all callouts | |
1438 | * were finished. | |
1439 | * | |
1440 | * This caused some problems for ICAP because we want to make the | |
1441 | * ICAP callout after checking ACLs, but before checking the no_cache | |
1442 | * list. We can't stuff the ICAP state into the ClientRequestContext | |
1443 | * class because we still need the ICAP state after ClientRequestContext | |
1444 | * goes away. | |
1445 | * | |
1446 | * Note that ClientRequestContext is created before the first call | |
1447 | * to doCallouts(). | |
1448 | * | |
1449 | * If one of the callouts notices that ClientHttpRequest is no | |
1450 | * longer valid, it should call cbdataReferenceDone() so that | |
1451 | * ClientHttpRequest's reference count goes to zero and it will get | |
1452 | * deleted. ClientHttpRequest will then delete ClientRequestContext. | |
1453 | * | |
1454 | * Note that we set the _done flags here before actually starting | |
1455 | * the callout. This is strictly for convenience. | |
1456 | */ | |
1457 | ||
425de4c8 AJ |
1458 | extern tos_t aclMapTOS (acl_tos * head, ACLChecklist * ch); |
1459 | extern nfmark_t aclMapNfmark (acl_nfmark * head, ACLChecklist * ch); | |
057f5854 | 1460 | |
de31d06f | 1461 | void |
1462 | ClientHttpRequest::doCallouts() | |
1463 | { | |
1464 | assert(calloutContext); | |
1465 | ||
6fca33e0 CT |
1466 | /*Save the original request for logging purposes*/ |
1467 | if (!calloutContext->http->al.request) | |
105d1937 | 1468 | calloutContext->http->al.request = HTTPMSGLOCK(request); |
6fca33e0 | 1469 | |
fe97983f AJ |
1470 | // CVE-2009-0801: verify the Host: header is consistent with other known details. |
1471 | if (!calloutContext->host_header_verify_done) { | |
1472 | debugs(83, 3, HERE << "Doing calloutContext->hostHeaderVerify()"); | |
1473 | calloutContext->host_header_verify_done = true; | |
1474 | calloutContext->hostHeaderVerify(); | |
1475 | return; | |
1476 | } | |
1477 | ||
de31d06f | 1478 | if (!calloutContext->http_access_done) { |
3712be3f | 1479 | debugs(83, 3, HERE << "Doing calloutContext->clientAccessCheck()"); |
57abaac0 | 1480 | calloutContext->http_access_done = true; |
de31d06f | 1481 | calloutContext->clientAccessCheck(); |
1482 | return; | |
1483 | } | |
1484 | ||
a83c6ed6 | 1485 | #if USE_ADAPTATION |
abd4b611 | 1486 | if (!calloutContext->adaptation_acl_check_done) { |
a83c6ed6 | 1487 | calloutContext->adaptation_acl_check_done = true; |
abd4b611 | 1488 | if (Adaptation::AccessCheck::Start( |
26ac0430 | 1489 | Adaptation::methodReqmod, Adaptation::pointPreCache, |
79628299 | 1490 | request, NULL, this)) |
abd4b611 | 1491 | return; // will call callback |
de31d06f | 1492 | } |
de31d06f | 1493 | #endif |
1494 | ||
1495 | if (!calloutContext->redirect_done) { | |
57abaac0 | 1496 | calloutContext->redirect_done = true; |
de31d06f | 1497 | assert(calloutContext->redirect_state == REDIRECT_NONE); |
1498 | ||
1499 | if (Config.Program.redirect) { | |
3712be3f | 1500 | debugs(83, 3, HERE << "Doing calloutContext->clientRedirectStart()"); |
de31d06f | 1501 | calloutContext->redirect_state = REDIRECT_PENDING; |
1502 | calloutContext->clientRedirectStart(); | |
1503 | return; | |
1504 | } | |
1505 | } | |
1506 | ||
533493da AJ |
1507 | if (!calloutContext->adapted_http_access_done) { |
1508 | debugs(83, 3, HERE << "Doing calloutContext->clientAccessCheck2()"); | |
1509 | calloutContext->adapted_http_access_done = true; | |
1510 | calloutContext->clientAccessCheck2(); | |
1511 | return; | |
1512 | } | |
1513 | ||
57abaac0 | 1514 | if (!calloutContext->interpreted_req_hdrs) { |
3712be3f | 1515 | debugs(83, 3, HERE << "Doing clientInterpretRequestHeaders()"); |
57abaac0 | 1516 | calloutContext->interpreted_req_hdrs = 1; |
1517 | clientInterpretRequestHeaders(this); | |
1518 | } | |
1519 | ||
de31d06f | 1520 | if (!calloutContext->no_cache_done) { |
57abaac0 | 1521 | calloutContext->no_cache_done = true; |
de31d06f | 1522 | |
1523 | if (Config.accessList.noCache && request->flags.cachable) { | |
3712be3f | 1524 | debugs(83, 3, HERE << "Doing calloutContext->checkNoCache()"); |
de31d06f | 1525 | calloutContext->checkNoCache(); |
1526 | return; | |
1527 | } | |
1528 | } | |
1529 | ||
425de4c8 AJ |
1530 | if (!calloutContext->tosToClientDone) { |
1531 | calloutContext->tosToClientDone = true; | |
73c36fd9 | 1532 | if (getConn() != NULL && Comm::IsConnOpen(getConn()->clientConnection)) { |
c0941a6a | 1533 | ACLFilledChecklist ch(NULL, request, NULL); |
057f5854 | 1534 | ch.src_addr = request->client_addr; |
1535 | ch.my_addr = request->my_addr; | |
425de4c8 | 1536 | tos_t tos = aclMapTOS(Ip::Qos::TheConfig.tosToClient, &ch); |
3712be3f | 1537 | if (tos) |
73c36fd9 | 1538 | Ip::Qos::setSockTos(getConn()->clientConnection, tos); |
425de4c8 AJ |
1539 | } |
1540 | } | |
1541 | ||
1542 | if (!calloutContext->nfmarkToClientDone) { | |
1543 | calloutContext->nfmarkToClientDone = true; | |
73c36fd9 | 1544 | if (getConn() != NULL && Comm::IsConnOpen(getConn()->clientConnection)) { |
425de4c8 AJ |
1545 | ACLFilledChecklist ch(NULL, request, NULL); |
1546 | ch.src_addr = request->client_addr; | |
1547 | ch.my_addr = request->my_addr; | |
1548 | nfmark_t mark = aclMapNfmark(Ip::Qos::TheConfig.nfmarkToClient, &ch); | |
1549 | if (mark) | |
73c36fd9 | 1550 | Ip::Qos::setSockNfmark(getConn()->clientConnection, mark); |
3712be3f | 1551 | } |
057f5854 | 1552 | } |
1553 | ||
d2565320 | 1554 | #if USE_SSL |
e0c0d54c CT |
1555 | if (!calloutContext->sslBumpCheckDone) { |
1556 | calloutContext->sslBumpCheckDone = true; | |
1557 | if (calloutContext->sslBumpAccessCheck()) | |
1558 | return; | |
1559 | /* else no ssl bump required*/ | |
1560 | } | |
d2565320 | 1561 | #endif |
e0c0d54c | 1562 | |
de31d06f | 1563 | cbdataReferenceDone(calloutContext->http); |
1564 | delete calloutContext; | |
1565 | calloutContext = NULL; | |
de31d06f | 1566 | #if HEADERS_LOG |
1567 | ||
1568 | headersLog(0, 1, request->method, request); | |
1569 | #endif | |
1570 | ||
58d7150d | 1571 | debugs(83, 3, HERE << "calling processRequest()"); |
de31d06f | 1572 | processRequest(); |
3ff65596 AR |
1573 | |
1574 | #if ICAP_CLIENT | |
1575 | Adaptation::Icap::History::Pointer ih = request->icapHistory(); | |
1576 | if (ih != NULL) | |
1577 | ih->logType = logType; | |
1578 | #endif | |
de31d06f | 1579 | } |
1580 | ||
32d002cb | 1581 | #if !_USE_INLINE_ |
86a2f789 | 1582 | #include "client_side_request.cci" |
1583 | #endif | |
de31d06f | 1584 | |
a83c6ed6 | 1585 | #if USE_ADAPTATION |
a22e6cd3 AR |
1586 | /// Initiate an asynchronous adaptation transaction which will call us back. |
1587 | void | |
1588 | ClientHttpRequest::startAdaptation(const Adaptation::ServiceGroupPointer &g) | |
3b299123 | 1589 | { |
a22e6cd3 | 1590 | debugs(85, 3, HERE << "adaptation needed for " << this); |
a83c6ed6 AR |
1591 | assert(!virginHeadSource); |
1592 | assert(!adaptedBodySource); | |
a22e6cd3 | 1593 | virginHeadSource = initiateAdaptation( |
4cb2536f | 1594 | new Adaptation::Iterator(request, NULL, g)); |
a83c6ed6 | 1595 | |
e1381638 | 1596 | // we could try to guess whether we can bypass this adaptation |
a22e6cd3 | 1597 | // initiation failure, but it should not really happen |
4299f876 | 1598 | Must(initiated(virginHeadSource)); |
de31d06f | 1599 | } |
1600 | ||
1601 | void | |
3af10ac0 | 1602 | ClientHttpRequest::noteAdaptationAnswer(const Adaptation::Answer &answer) |
de31d06f | 1603 | { |
de31d06f | 1604 | assert(cbdataReferenceValid(this)); // indicates bug |
3af10ac0 AR |
1605 | clearAdaptation(virginHeadSource); |
1606 | assert(!adaptedBodySource); | |
1607 | ||
1608 | switch (answer.kind) { | |
1609 | case Adaptation::Answer::akForward: | |
1610 | handleAdaptedHeader(answer.message); | |
1611 | break; | |
1612 | ||
1613 | case Adaptation::Answer::akBlock: | |
1614 | handleAdaptationBlock(answer); | |
1615 | break; | |
1616 | ||
1617 | case Adaptation::Answer::akError: | |
1618 | handleAdaptationFailure(ERR_DETAIL_CLT_REQMOD_ABORT, !answer.final); | |
1619 | break; | |
1620 | } | |
1621 | } | |
1622 | ||
1623 | void | |
ec4d1a1d | 1624 | ClientHttpRequest::handleAdaptedHeader(HttpMsg *msg) |
3af10ac0 | 1625 | { |
5f8252d2 | 1626 | assert(msg); |
1627 | ||
b044675d | 1628 | if (HttpRequest *new_req = dynamic_cast<HttpRequest*>(msg)) { |
200ac359 | 1629 | /* |
5f8252d2 | 1630 | * Replace the old request with the new request. |
200ac359 | 1631 | */ |
6dd9f4bd | 1632 | HTTPMSGUNLOCK(request); |
1633 | request = HTTPMSGLOCK(new_req); | |
200ac359 | 1634 | /* |
1635 | * Store the new URI for logging | |
1636 | */ | |
1637 | xfree(uri); | |
1638 | uri = xstrdup(urlCanonical(request)); | |
1639 | setLogUri(this, urlCanonicalClean(request)); | |
914b89a2 | 1640 | assert(request->method.id()); |
b044675d | 1641 | } else if (HttpReply *new_rep = dynamic_cast<HttpReply*>(msg)) { |
1642 | debugs(85,3,HERE << "REQMOD reply is HTTP reply"); | |
1643 | ||
5f8252d2 | 1644 | // subscribe to receive reply body |
1645 | if (new_rep->body_pipe != NULL) { | |
a83c6ed6 | 1646 | adaptedBodySource = new_rep->body_pipe; |
d222a56c HN |
1647 | int consumer_ok = adaptedBodySource->setConsumerIfNotLate(this); |
1648 | assert(consumer_ok); | |
5f8252d2 | 1649 | } |
1650 | ||
b044675d | 1651 | clientStreamNode *node = (clientStreamNode *)client_stream.tail->prev->data; |
1652 | clientReplyContext *repContext = dynamic_cast<clientReplyContext *>(node->data.getRaw()); | |
1653 | repContext->createStoreEntry(request->method, request->flags); | |
1654 | ||
1655 | EBIT_CLR(storeEntry()->flags, ENTRY_FWD_HDR_WAIT); | |
1656 | request_satisfaction_mode = true; | |
1657 | request_satisfaction_offset = 0; | |
1658 | storeEntry()->replaceHttpReply(new_rep); | |
97ae5196 | 1659 | storeEntry()->timestampsSet(); |
cb4c4288 | 1660 | |
a83c6ed6 | 1661 | if (!adaptedBodySource) // no body |
cb4c4288 | 1662 | storeEntry()->complete(); |
b044675d | 1663 | clientGetMoreData(node, this); |
200ac359 | 1664 | } |
de31d06f | 1665 | |
5f8252d2 | 1666 | // we are done with getting headers (but may be receiving body) |
a83c6ed6 | 1667 | clearAdaptation(virginHeadSource); |
5f8252d2 | 1668 | |
b044675d | 1669 | if (!request_satisfaction_mode) |
1670 | doCallouts(); | |
de31d06f | 1671 | } |
1672 | ||
1673 | void | |
3af10ac0 | 1674 | ClientHttpRequest::handleAdaptationBlock(const Adaptation::Answer &answer) |
de31d06f | 1675 | { |
3af10ac0 AR |
1676 | request->detailError(ERR_ACCESS_DENIED, ERR_DETAIL_REQMOD_BLOCK); |
1677 | AclMatchedName = answer.ruleId.termedBuf(); | |
1678 | assert(calloutContext); | |
1679 | calloutContext->clientAccessCheckDone(ACCESS_DENIED); | |
1680 | AclMatchedName = NULL; | |
de31d06f | 1681 | } |
1682 | ||
1683 | void | |
1cf238db | 1684 | ClientHttpRequest::noteMoreBodyDataAvailable(BodyPipe::Pointer) |
de31d06f | 1685 | { |
5f8252d2 | 1686 | assert(request_satisfaction_mode); |
a83c6ed6 | 1687 | assert(adaptedBodySource != NULL); |
5f8252d2 | 1688 | |
4ce0e99b | 1689 | if (const size_t contentSize = adaptedBodySource->buf().contentSize()) { |
a83c6ed6 | 1690 | BodyPipeCheckout bpc(*adaptedBodySource); |
4ce0e99b | 1691 | const StoreIOBuffer ioBuf(&bpc.buf, request_satisfaction_offset); |
5f8252d2 | 1692 | storeEntry()->write(ioBuf); |
1693 | // assume can write everything | |
1694 | request_satisfaction_offset += contentSize; | |
4ce0e99b | 1695 | bpc.buf.consume(contentSize); |
5f8252d2 | 1696 | bpc.checkIn(); |
1697 | } | |
1698 | ||
a83c6ed6 | 1699 | if (adaptedBodySource->exhausted()) |
5f8252d2 | 1700 | endRequestSatisfaction(); |
1701 | // else wait for more body data | |
de31d06f | 1702 | } |
1703 | ||
1704 | void | |
1cf238db | 1705 | ClientHttpRequest::noteBodyProductionEnded(BodyPipe::Pointer) |
de31d06f | 1706 | { |
a83c6ed6 AR |
1707 | assert(!virginHeadSource); |
1708 | if (adaptedBodySource != NULL) { // did not end request satisfaction yet | |
26ac0430 | 1709 | // We do not expect more because noteMoreBodyDataAvailable always |
5f8252d2 | 1710 | // consumes everything. We do not even have a mechanism to consume |
1711 | // leftovers after noteMoreBodyDataAvailable notifications seize. | |
a83c6ed6 | 1712 | assert(adaptedBodySource->exhausted()); |
5f8252d2 | 1713 | endRequestSatisfaction(); |
1714 | } | |
1715 | } | |
3b299123 | 1716 | |
5f8252d2 | 1717 | void |
26ac0430 AJ |
1718 | ClientHttpRequest::endRequestSatisfaction() |
1719 | { | |
5f8252d2 | 1720 | debugs(85,4, HERE << this << " ends request satisfaction"); |
1721 | assert(request_satisfaction_mode); | |
a83c6ed6 | 1722 | stopConsumingFrom(adaptedBodySource); |
3b299123 | 1723 | |
5f8252d2 | 1724 | // TODO: anything else needed to end store entry formation correctly? |
1725 | storeEntry()->complete(); | |
1726 | } | |
de31d06f | 1727 | |
5f8252d2 | 1728 | void |
1cf238db | 1729 | ClientHttpRequest::noteBodyProducerAborted(BodyPipe::Pointer) |
5f8252d2 | 1730 | { |
a83c6ed6 AR |
1731 | assert(!virginHeadSource); |
1732 | stopConsumingFrom(adaptedBodySource); | |
eae3a9a6 AR |
1733 | |
1734 | debugs(85,3, HERE << "REQMOD body production failed"); | |
1735 | if (request_satisfaction_mode) { // too late to recover or serve an error | |
1736 | request->detailError(ERR_ICAP_FAILURE, ERR_DETAIL_CLT_REQMOD_RESP_BODY); | |
73c36fd9 | 1737 | const Comm::ConnectionPointer c = getConn()->clientConnection; |
e7cea0ed AJ |
1738 | Must(Comm::IsConnOpen(c)); |
1739 | c->close(); // drastic, but we may be writing a response already | |
eae3a9a6 AR |
1740 | } else { |
1741 | handleAdaptationFailure(ERR_DETAIL_CLT_REQMOD_REQ_BODY); | |
1742 | } | |
5f8252d2 | 1743 | } |
3b299123 | 1744 | |
5f8252d2 | 1745 | void |
64b66b76 | 1746 | ClientHttpRequest::handleAdaptationFailure(int errDetail, bool bypassable) |
5f8252d2 | 1747 | { |
a83c6ed6 | 1748 | debugs(85,3, HERE << "handleAdaptationFailure(" << bypassable << ")"); |
3b299123 | 1749 | |
5f8252d2 | 1750 | const bool usedStore = storeEntry() && !storeEntry()->isEmpty(); |
1751 | const bool usedPipe = request->body_pipe != NULL && | |
26ac0430 | 1752 | request->body_pipe->consumedSize() > 0; |
3b299123 | 1753 | |
9d4d7c5e | 1754 | if (bypassable && !usedStore && !usedPipe) { |
1755 | debugs(85,3, HERE << "ICAP REQMOD callout failed, bypassing: " << calloutContext); | |
5f8252d2 | 1756 | if (calloutContext) |
1757 | doCallouts(); | |
1758 | return; | |
1759 | } | |
3b299123 | 1760 | |
5f8252d2 | 1761 | debugs(85,3, HERE << "ICAP REQMOD callout failed, responding with error"); |
3b299123 | 1762 | |
5f8252d2 | 1763 | clientStreamNode *node = (clientStreamNode *)client_stream.tail->prev->data; |
1764 | clientReplyContext *repContext = dynamic_cast<clientReplyContext *>(node->data.getRaw()); | |
1765 | assert(repContext); | |
de31d06f | 1766 | |
26ac0430 | 1767 | // The original author of the code also wanted to pass an errno to |
5f8252d2 | 1768 | // setReplyToError, but it seems unlikely that the errno reflects the |
1769 | // true cause of the error at this point, so I did not pass it. | |
b7ac5457 | 1770 | Ip::Address noAddr; |
b70ba605 | 1771 | noAddr.SetNoAddr(); |
1cf238db | 1772 | ConnStateData * c = getConn(); |
5f8252d2 | 1773 | repContext->setReplyToError(ERR_ICAP_FAILURE, HTTP_INTERNAL_SERVER_ERROR, |
26ac0430 | 1774 | request->method, NULL, |
73c36fd9 | 1775 | (c != NULL ? c->clientConnection->remote : noAddr), request, NULL, |
79fc6915 | 1776 | #if USE_AUTH |
a33a428a | 1777 | (c != NULL && c->auth_user_request != NULL ? |
26ac0430 | 1778 | c->auth_user_request : request->auth_user_request)); |
79fc6915 AJ |
1779 | #else |
1780 | NULL); | |
1781 | #endif | |
de31d06f | 1782 | |
64b66b76 | 1783 | request->detailError(ERR_ICAP_FAILURE, errDetail); |
378e20f3 | 1784 | c->flags.readMore = true; |
eb44b2d7 | 1785 | c->expectNoForwarding(); |
5f8252d2 | 1786 | node = (clientStreamNode *)client_stream.tail->data; |
1787 | clientStreamRead(node, this, node->readBuffer); | |
de31d06f | 1788 | } |
1789 | ||
1790 | #endif |