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edce4d98 | 1 | |
2 | /* | |
ae45c4de | 3 | * DEBUG: section 85 Client-side Request Routines |
4 | * AUTHOR: Robert Collins (Originally Duane Wessels in client_side.c) | |
26ac0430 | 5 | * |
edce4d98 | 6 | * SQUID Web Proxy Cache http://www.squid-cache.org/ |
7 | * ---------------------------------------------------------- | |
0a9297f6 | 8 | * |
9 | * Squid is the result of efforts by numerous individuals from | |
10 | * the Internet community; see the CONTRIBUTORS file for full | |
11 | * details. Many organizations have provided support for Squid's | |
12 | * development; see the SPONSORS file for full details. Squid is | |
13 | * Copyrighted (C) 2001 by the Regents of the University of | |
14 | * California; see the COPYRIGHT file for full details. Squid | |
15 | * incorporates software developed and/or copyrighted by other | |
16 | * sources; see the CREDITS file for full details. | |
17 | * | |
18 | * This program is free software; you can redistribute it and/or modify | |
19 | * it under the terms of the GNU General Public License as published by | |
20 | * the Free Software Foundation; either version 2 of the License, or | |
21 | * (at your option) any later version. | |
22 | * | |
23 | * This program is distributed in the hope that it will be useful, | |
24 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
25 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
26 | * GNU General Public License for more details. | |
27 | * | |
28 | * You should have received a copy of the GNU General Public License | |
29 | * along with this program; if not, write to the Free Software | |
30 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. | |
31 | * | |
edce4d98 | 32 | */ |
33 | ||
69660be0 | 34 | /* |
35 | * General logic of request processing: | |
26ac0430 | 36 | * |
69660be0 | 37 | * We run a series of tests to determine if access will be permitted, and to do |
38 | * any redirection. Then we call into the result clientStream to retrieve data. | |
39 | * From that point on it's up to reply management. | |
edce4d98 | 40 | */ |
41 | ||
582c2af2 | 42 | #include "squid.h" |
c0941a6a AR |
43 | #include "acl/FilledChecklist.h" |
44 | #include "acl/Gadgets.h" | |
65d448bc | 45 | #include "anyp/PortCfg.h" |
582c2af2 | 46 | #include "ClientRequestContext.h" |
27bc2077 AJ |
47 | #include "client_side.h" |
48 | #include "client_side_reply.h" | |
49 | #include "client_side_request.h" | |
582c2af2 | 50 | #include "clientStream.h" |
5c336a3b | 51 | #include "comm/Connection.h" |
ec41b64c | 52 | #include "comm/Write.h" |
27bc2077 | 53 | #include "compat/inet_pton.h" |
582c2af2 | 54 | #include "err_detail_type.h" |
2bd84e5f | 55 | #include "errorpage.h" |
c4ad1349 | 56 | #include "fd.h" |
27bc2077 | 57 | #include "fde.h" |
31971e6a | 58 | #include "format/Token.h" |
d05c079c | 59 | #include "gopher.h" |
e166785a | 60 | #include "helper.h" |
5c0c642e | 61 | #include "http.h" |
ce394734 | 62 | #include "HttpHdrCc.h" |
27bc2077 AJ |
63 | #include "HttpReply.h" |
64 | #include "HttpRequest.h" | |
582c2af2 | 65 | #include "ipcache.h" |
425de4c8 | 66 | #include "ip/QosConfig.h" |
1c7ae5ff | 67 | #include "log/access_log.h" |
27bc2077 | 68 | #include "MemObject.h" |
8a01b99e | 69 | #include "Parsing.h" |
582c2af2 | 70 | #include "profiler/Profiler.h" |
e166785a | 71 | #include "redirect.h" |
4d5904f7 | 72 | #include "SquidConfig.h" |
27bc2077 | 73 | #include "SquidTime.h" |
582c2af2 | 74 | #include "Store.h" |
28204b3b | 75 | #include "StrList.h" |
685c6ff5 | 76 | #include "tools.h" |
b1bd952a | 77 | #include "URL.h" |
27bc2077 | 78 | #include "wordlist.h" |
582c2af2 FC |
79 | #if USE_AUTH |
80 | #include "auth/UserRequest.h" | |
81 | #endif | |
82 | #if USE_ADAPTATION | |
83 | #include "adaptation/AccessCheck.h" | |
84 | #include "adaptation/Answer.h" | |
85 | #include "adaptation/Iterator.h" | |
86 | #include "adaptation/Service.h" | |
87 | #if ICAP_CLIENT | |
88 | #include "adaptation/icap/History.h" | |
89 | #endif | |
90 | #endif | |
4db984be CT |
91 | #if USE_SSL |
92 | #include "ssl/support.h" | |
2bd84e5f | 93 | #include "ssl/ServerBump.h" |
4db984be | 94 | #endif |
3ff65596 | 95 | |
edce4d98 | 96 | #if LINGERING_CLOSE |
97 | #define comm_close comm_lingering_close | |
98 | #endif | |
99 | ||
100 | static const char *const crlf = "\r\n"; | |
101 | ||
609c620a | 102 | #if FOLLOW_X_FORWARDED_FOR |
2efeb0b7 | 103 | static void clientFollowXForwardedForCheck(allow_t answer, void *data); |
609c620a | 104 | #endif /* FOLLOW_X_FORWARDED_FOR */ |
3d674977 | 105 | |
955394ce | 106 | ErrorState *clientBuildError(err_type, Http::StatusCode, char const *url, Ip::Address &, HttpRequest *); |
2bd84e5f | 107 | |
8e2745f4 | 108 | CBDATA_CLASS_INIT(ClientRequestContext); |
109 | ||
110 | void * | |
111 | ClientRequestContext::operator new (size_t size) | |
112 | { | |
113 | assert (size == sizeof(ClientRequestContext)); | |
114 | CBDATA_INIT_TYPE(ClientRequestContext); | |
115 | ClientRequestContext *result = cbdataAlloc(ClientRequestContext); | |
aa625860 | 116 | return result; |
8e2745f4 | 117 | } |
62e76326 | 118 | |
8e2745f4 | 119 | void |
120 | ClientRequestContext::operator delete (void *address) | |
121 | { | |
122 | ClientRequestContext *t = static_cast<ClientRequestContext *>(address); | |
aa625860 | 123 | cbdataFree(t); |
8e2745f4 | 124 | } |
125 | ||
edce4d98 | 126 | /* Local functions */ |
edce4d98 | 127 | /* other */ |
2efeb0b7 | 128 | static void clientAccessCheckDoneWrapper(allow_t, void *); |
e0c0d54c | 129 | #if USE_SSL |
2efeb0b7 | 130 | static void sslBumpAccessCheckDoneWrapper(allow_t, void *); |
e0c0d54c | 131 | #endif |
59a1efb2 | 132 | static int clientHierarchical(ClientHttpRequest * http); |
133 | static void clientInterpretRequestHeaders(ClientHttpRequest * http); | |
e166785a | 134 | static HLPCB clientRedirectDoneWrapper; |
a8a0b1c2 | 135 | static HLPCB clientStoreIdDoneWrapper; |
2efeb0b7 | 136 | static void checkNoCacheDoneWrapper(allow_t, void *); |
82afb125 FC |
137 | SQUIDCEXTERN CSR clientGetMoreData; |
138 | SQUIDCEXTERN CSS clientReplyStatus; | |
139 | SQUIDCEXTERN CSD clientReplyDetach; | |
528b2c61 | 140 | static void checkFailureRatio(err_type, hier_code); |
edce4d98 | 141 | |
8e2745f4 | 142 | ClientRequestContext::~ClientRequestContext() |
143 | { | |
de31d06f | 144 | /* |
a546b04b | 145 | * Release our "lock" on our parent, ClientHttpRequest, if we |
146 | * still have one | |
de31d06f | 147 | */ |
a546b04b | 148 | |
149 | if (http) | |
150 | cbdataReferenceDone(http); | |
62e76326 | 151 | |
2bd84e5f | 152 | delete error; |
5f8252d2 | 153 | debugs(85,3, HERE << this << " ClientRequestContext destructed"); |
8e2745f4 | 154 | } |
155 | ||
a8a0b1c2 | 156 | ClientRequestContext::ClientRequestContext(ClientHttpRequest *anHttp) : http(cbdataReference(anHttp)), acl_checklist (NULL), redirect_state (REDIRECT_NONE), store_id_state(REDIRECT_NONE),error(NULL), readNextRequest(false) |
edce4d98 | 157 | { |
57abaac0 | 158 | http_access_done = false; |
159 | redirect_done = false; | |
d06e17ea | 160 | redirect_fail_count = 0; |
a8a0b1c2 EC |
161 | store_id_done = false; |
162 | store_id_fail_count = 0; | |
57abaac0 | 163 | no_cache_done = false; |
164 | interpreted_req_hdrs = false; | |
e0c0d54c CT |
165 | #if USE_SSL |
166 | sslBumpCheckDone = false; | |
167 | #endif | |
0b86805b | 168 | debugs(85,3, HERE << this << " ClientRequestContext constructed"); |
edce4d98 | 169 | } |
170 | ||
528b2c61 | 171 | CBDATA_CLASS_INIT(ClientHttpRequest); |
8e2745f4 | 172 | |
528b2c61 | 173 | void * |
174 | ClientHttpRequest::operator new (size_t size) | |
175 | { | |
176 | assert (size == sizeof (ClientHttpRequest)); | |
177 | CBDATA_INIT_TYPE(ClientHttpRequest); | |
178 | ClientHttpRequest *result = cbdataAlloc(ClientHttpRequest); | |
aa625860 | 179 | return result; |
528b2c61 | 180 | } |
181 | ||
62e76326 | 182 | void |
528b2c61 | 183 | ClientHttpRequest::operator delete (void *address) |
184 | { | |
aa625860 | 185 | ClientHttpRequest *t = static_cast<ClientHttpRequest *>(address); |
186 | cbdataFree(t); | |
528b2c61 | 187 | } |
188 | ||
26ac0430 | 189 | ClientHttpRequest::ClientHttpRequest(ConnStateData * aConn) : |
a83c6ed6 | 190 | #if USE_ADAPTATION |
26ac0430 | 191 | AsyncJob("ClientHttpRequest"), |
1cf238db | 192 | #endif |
26ac0430 | 193 | loggingEntry_(NULL) |
528b2c61 | 194 | { |
1cf238db | 195 | start_time = current_time; |
a0355e95 | 196 | setConn(aConn); |
41ebd397 CT |
197 | al = new AccessLogEntry; |
198 | al->tcpClient = clientConnection = aConn->clientConnection; | |
f4698e0b CT |
199 | #if USE_SSL |
200 | if (aConn->clientConnection != NULL && aConn->clientConnection->isOpen()) { | |
201 | if (SSL *ssl = fd_table[aConn->clientConnection->fd].ssl) | |
202 | al->cache.sslClientCert.reset(SSL_get_peer_certificate(ssl)); | |
203 | } | |
204 | #endif | |
a0355e95 | 205 | dlinkAdd(this, &active, &ClientActiveRequests); |
a83c6ed6 | 206 | #if USE_ADAPTATION |
b044675d | 207 | request_satisfaction_mode = false; |
208 | #endif | |
e0c0d54c | 209 | #if USE_SSL |
08097970 | 210 | sslBumpNeed_ = Ssl::bumpEnd; |
e0c0d54c | 211 | #endif |
528b2c61 | 212 | } |
213 | ||
0655fa4d | 214 | /* |
215 | * returns true if client specified that the object must come from the cache | |
216 | * without contacting origin server | |
217 | */ | |
218 | bool | |
219 | ClientHttpRequest::onlyIfCached()const | |
220 | { | |
221 | assert(request); | |
222 | return request->cache_control && | |
4ce6e3b5 | 223 | request->cache_control->onlyIfCached(); |
0655fa4d | 224 | } |
225 | ||
77aacca5 | 226 | /** |
528b2c61 | 227 | * This function is designed to serve a fairly specific purpose. |
228 | * Occasionally our vBNS-connected caches can talk to each other, but not | |
229 | * the rest of the world. Here we try to detect frequent failures which | |
230 | * make the cache unusable (e.g. DNS lookup and connect() failures). If | |
231 | * the failure:success ratio goes above 1.0 then we go into "hit only" | |
232 | * mode where we only return UDP_HIT or UDP_MISS_NOFETCH. Neighbors | |
233 | * will only fetch HITs from us if they are using the ICP protocol. We | |
234 | * stay in this mode for 5 minutes. | |
26ac0430 | 235 | * |
528b2c61 | 236 | * Duane W., Sept 16, 1996 |
237 | */ | |
528b2c61 | 238 | static void |
239 | checkFailureRatio(err_type etype, hier_code hcode) | |
240 | { | |
77aacca5 AJ |
241 | // Can be set at compile time with -D compiler flag |
242 | #ifndef FAILURE_MODE_TIME | |
243 | #define FAILURE_MODE_TIME 300 | |
244 | #endif | |
245 | ||
8d74a311 AJ |
246 | if (hcode == HIER_NONE) |
247 | return; | |
248 | ||
249 | // don't bother when ICP is disabled. | |
250 | if (Config.Port.icp <= 0) | |
251 | return; | |
252 | ||
528b2c61 | 253 | static double magic_factor = 100.0; |
254 | double n_good; | |
255 | double n_bad; | |
62e76326 | 256 | |
528b2c61 | 257 | n_good = magic_factor / (1.0 + request_failure_ratio); |
62e76326 | 258 | |
528b2c61 | 259 | n_bad = magic_factor - n_good; |
62e76326 | 260 | |
528b2c61 | 261 | switch (etype) { |
62e76326 | 262 | |
528b2c61 | 263 | case ERR_DNS_FAIL: |
62e76326 | 264 | |
528b2c61 | 265 | case ERR_CONNECT_FAIL: |
3712be3f | 266 | case ERR_SECURE_CONNECT_FAIL: |
62e76326 | 267 | |
528b2c61 | 268 | case ERR_READ_ERROR: |
5086523e | 269 | ++n_bad; |
62e76326 | 270 | break; |
271 | ||
528b2c61 | 272 | default: |
5086523e | 273 | ++n_good; |
528b2c61 | 274 | } |
62e76326 | 275 | |
528b2c61 | 276 | request_failure_ratio = n_bad / n_good; |
62e76326 | 277 | |
528b2c61 | 278 | if (hit_only_mode_until > squid_curtime) |
62e76326 | 279 | return; |
280 | ||
528b2c61 | 281 | if (request_failure_ratio < 1.0) |
62e76326 | 282 | return; |
283 | ||
77aacca5 | 284 | debugs(33, DBG_CRITICAL, "WARNING: Failure Ratio at "<< std::setw(4)<< |
bf8fe701 | 285 | std::setprecision(3) << request_failure_ratio); |
62e76326 | 286 | |
8d74a311 | 287 | debugs(33, DBG_CRITICAL, "WARNING: ICP going into HIT-only mode for " << |
bf8fe701 | 288 | FAILURE_MODE_TIME / 60 << " minutes..."); |
62e76326 | 289 | |
528b2c61 | 290 | hit_only_mode_until = squid_curtime + FAILURE_MODE_TIME; |
62e76326 | 291 | |
528b2c61 | 292 | request_failure_ratio = 0.8; /* reset to something less than 1.0 */ |
293 | } | |
294 | ||
295 | ClientHttpRequest::~ClientHttpRequest() | |
296 | { | |
bf8fe701 | 297 | debugs(33, 3, "httpRequestFree: " << uri); |
72bdee4c | 298 | PROF_start(httpRequestFree); |
62e76326 | 299 | |
5f8252d2 | 300 | // Even though freeResources() below may destroy the request, |
301 | // we no longer set request->body_pipe to NULL here | |
302 | // because we did not initiate that pipe (ConnStateData did) | |
62e76326 | 303 | |
528b2c61 | 304 | /* the ICP check here was erroneous |
26ac0430 | 305 | * - StoreEntry::releaseRequest was always called if entry was valid |
528b2c61 | 306 | */ |
307 | assert(logType < LOG_TYPE_MAX); | |
9ce7856a | 308 | |
528b2c61 | 309 | logRequest(); |
9ce7856a | 310 | |
0976f8db | 311 | loggingEntry(NULL); |
312 | ||
528b2c61 | 313 | if (request) |
41ebd397 | 314 | checkFailureRatio(request->errType, al->hier.code); |
62e76326 | 315 | |
528b2c61 | 316 | freeResources(); |
62e76326 | 317 | |
a83c6ed6 AR |
318 | #if USE_ADAPTATION |
319 | announceInitiatorAbort(virginHeadSource); | |
9d4d7c5e | 320 | |
a83c6ed6 AR |
321 | if (adaptedBodySource != NULL) |
322 | stopConsumingFrom(adaptedBodySource); | |
de31d06f | 323 | #endif |
9ce7856a | 324 | |
de31d06f | 325 | if (calloutContext) |
326 | delete calloutContext; | |
327 | ||
be364179 AJ |
328 | clientConnection = NULL; |
329 | ||
26ac0430 AJ |
330 | if (conn_) |
331 | cbdataReferenceDone(conn_); | |
1cf238db | 332 | |
528b2c61 | 333 | /* moving to the next connection is handled by the context free */ |
334 | dlinkDelete(&active, &ClientActiveRequests); | |
9ce7856a | 335 | |
72bdee4c | 336 | PROF_stop(httpRequestFree); |
528b2c61 | 337 | } |
62e76326 | 338 | |
11992b6f AJ |
339 | /** |
340 | * Create a request and kick it off | |
341 | * | |
342 | * \retval 0 success | |
343 | * \retval -1 failure | |
344 | * | |
69660be0 | 345 | * TODO: Pass in the buffers to be used in the inital Read request, as they are |
346 | * determined by the user | |
edce4d98 | 347 | */ |
11992b6f | 348 | int |
60745f24 | 349 | clientBeginRequest(const HttpRequestMethod& method, char const *url, CSCB * streamcallback, |
0655fa4d | 350 | CSD * streamdetach, ClientStreamData streamdata, HttpHeader const *header, |
62e76326 | 351 | char *tailbuf, size_t taillen) |
edce4d98 | 352 | { |
353 | size_t url_sz; | |
a0355e95 | 354 | ClientHttpRequest *http = new ClientHttpRequest(NULL); |
190154cf | 355 | HttpRequest *request; |
528b2c61 | 356 | StoreIOBuffer tempBuffer; |
1cf238db | 357 | http->start_time = current_time; |
edce4d98 | 358 | /* this is only used to adjust the connection offset in client_side.c */ |
359 | http->req_sz = 0; | |
c8be6d7b | 360 | tempBuffer.length = taillen; |
361 | tempBuffer.data = tailbuf; | |
edce4d98 | 362 | /* client stream setup */ |
363 | clientStreamInit(&http->client_stream, clientGetMoreData, clientReplyDetach, | |
0655fa4d | 364 | clientReplyStatus, new clientReplyContext(http), streamcallback, |
62e76326 | 365 | streamdetach, streamdata, tempBuffer); |
edce4d98 | 366 | /* make it visible in the 'current acctive requests list' */ |
edce4d98 | 367 | /* Set flags */ |
a46d2c0e | 368 | /* internal requests only makes sense in an |
369 | * accelerator today. TODO: accept flags ? */ | |
be4d35dc | 370 | http->flags.accel = true; |
edce4d98 | 371 | /* allow size for url rewriting */ |
372 | url_sz = strlen(url) + Config.appendDomainLen + 5; | |
e6ccf245 | 373 | http->uri = (char *)xcalloc(url_sz, 1); |
edce4d98 | 374 | strcpy(http->uri, url); |
375 | ||
c21ad0f5 | 376 | if ((request = HttpRequest::CreateFromUrlAndMethod(http->uri, method)) == NULL) { |
bf8fe701 | 377 | debugs(85, 5, "Invalid URL: " << http->uri); |
62e76326 | 378 | return -1; |
edce4d98 | 379 | } |
62e76326 | 380 | |
69660be0 | 381 | /* |
11992b6f | 382 | * now update the headers in request with our supplied headers. urlParse |
69660be0 | 383 | * should return a blank header set, but we use Update to be sure of |
384 | * correctness. | |
edce4d98 | 385 | */ |
386 | if (header) | |
a9925b40 | 387 | request->header.update(header, NULL); |
62e76326 | 388 | |
edce4d98 | 389 | http->log_uri = xstrdup(urlCanonicalClean(request)); |
62e76326 | 390 | |
edce4d98 | 391 | /* http struct now ready */ |
392 | ||
69660be0 | 393 | /* |
394 | * build new header list *? TODO | |
edce4d98 | 395 | */ |
45e5102d | 396 | request->flags.accelerated = http->flags.accel; |
62e76326 | 397 | |
e857372a | 398 | request->flags.internalClient = true; |
a46d2c0e | 399 | |
400 | /* this is an internally created | |
401 | * request, not subject to acceleration | |
402 | * target overrides */ | |
69660be0 | 403 | /* |
404 | * FIXME? Do we want to detect and handle internal requests of internal | |
405 | * objects ? | |
406 | */ | |
edce4d98 | 407 | |
408 | /* Internally created requests cannot have bodies today */ | |
409 | request->content_length = 0; | |
62e76326 | 410 | |
cc192b50 | 411 | request->client_addr.SetNoAddr(); |
62e76326 | 412 | |
3d674977 AJ |
413 | #if FOLLOW_X_FORWARDED_FOR |
414 | request->indirect_client_addr.SetNoAddr(); | |
415 | #endif /* FOLLOW_X_FORWARDED_FOR */ | |
26ac0430 | 416 | |
cc192b50 | 417 | request->my_addr.SetNoAddr(); /* undefined for internal requests */ |
62e76326 | 418 | |
cc192b50 | 419 | request->my_addr.SetPort(0); |
62e76326 | 420 | |
3872be7c AJ |
421 | /* Our version is HTTP/1.1 */ |
422 | HttpVersion http_ver(1,1); | |
edce4d98 | 423 | request->http_ver = http_ver; |
62e76326 | 424 | |
b248c2a3 AJ |
425 | http->request = request; |
426 | HTTPMSGLOCK(http->request); | |
edce4d98 | 427 | |
428 | /* optional - skip the access check ? */ | |
de31d06f | 429 | http->calloutContext = new ClientRequestContext(http); |
430 | ||
57abaac0 | 431 | http->calloutContext->http_access_done = false; |
de31d06f | 432 | |
57abaac0 | 433 | http->calloutContext->redirect_done = true; |
de31d06f | 434 | |
57abaac0 | 435 | http->calloutContext->no_cache_done = true; |
de31d06f | 436 | |
437 | http->doCallouts(); | |
62e76326 | 438 | |
edce4d98 | 439 | return 0; |
440 | } | |
441 | ||
de31d06f | 442 | bool |
443 | ClientRequestContext::httpStateIsValid() | |
444 | { | |
445 | ClientHttpRequest *http_ = http; | |
446 | ||
447 | if (cbdataReferenceValid(http_)) | |
448 | return true; | |
449 | ||
450 | http = NULL; | |
451 | ||
452 | cbdataReferenceDone(http_); | |
453 | ||
454 | return false; | |
455 | } | |
456 | ||
3d674977 AJ |
457 | #if FOLLOW_X_FORWARDED_FOR |
458 | /** | |
a9044668 | 459 | * clientFollowXForwardedForCheck() checks the content of X-Forwarded-For: |
3d674977 AJ |
460 | * against the followXFF ACL, or cleans up and passes control to |
461 | * clientAccessCheck(). | |
d096ace1 AJ |
462 | * |
463 | * The trust model here is a little ambiguous. So to clarify the logic: | |
464 | * - we may always use the direct client address as the client IP. | |
a9044668 | 465 | * - these trust tests merey tell whether we trust given IP enough to believe the |
d096ace1 AJ |
466 | * IP string which it appended to the X-Forwarded-For: header. |
467 | * - if at any point we don't trust what an IP adds we stop looking. | |
468 | * - at that point the current contents of indirect_client_addr are the value set | |
469 | * by the last previously trusted IP. | |
470 | * ++ indirect_client_addr contains the remote direct client from the trusted peers viewpoint. | |
3d674977 | 471 | */ |
3d674977 | 472 | static void |
2efeb0b7 | 473 | clientFollowXForwardedForCheck(allow_t answer, void *data) |
3d674977 AJ |
474 | { |
475 | ClientRequestContext *calloutContext = (ClientRequestContext *) data; | |
3d674977 AJ |
476 | |
477 | if (!calloutContext->httpStateIsValid()) | |
478 | return; | |
479 | ||
d096ace1 AJ |
480 | ClientHttpRequest *http = calloutContext->http; |
481 | HttpRequest *request = http->request; | |
482 | ||
3d674977 AJ |
483 | /* |
484 | * answer should be be ACCESS_ALLOWED or ACCESS_DENIED if we are | |
485 | * called as a result of ACL checks, or -1 if we are called when | |
486 | * there's nothing left to do. | |
487 | */ | |
488 | if (answer == ACCESS_ALLOWED && | |
26ac0430 | 489 | request->x_forwarded_for_iterator.size () != 0) { |
d096ace1 | 490 | |
3d674977 | 491 | /* |
d096ace1 AJ |
492 | * Remove the last comma-delimited element from the |
493 | * x_forwarded_for_iterator and use it to repeat the cycle. | |
494 | */ | |
3d674977 AJ |
495 | const char *p; |
496 | const char *asciiaddr; | |
497 | int l; | |
b7ac5457 | 498 | Ip::Address addr; |
bb790702 | 499 | p = request->x_forwarded_for_iterator.termedBuf(); |
3d674977 AJ |
500 | l = request->x_forwarded_for_iterator.size(); |
501 | ||
502 | /* | |
503 | * XXX x_forwarded_for_iterator should really be a list of | |
504 | * IP addresses, but it's a String instead. We have to | |
505 | * walk backwards through the String, biting off the last | |
506 | * comma-delimited part each time. As long as the data is in | |
507 | * a String, we should probably implement and use a variant of | |
508 | * strListGetItem() that walks backwards instead of forwards | |
509 | * through a comma-separated list. But we don't even do that; | |
510 | * we just do the work in-line here. | |
511 | */ | |
512 | /* skip trailing space and commas */ | |
513 | while (l > 0 && (p[l-1] == ',' || xisspace(p[l-1]))) | |
5e263176 | 514 | --l; |
3d674977 AJ |
515 | request->x_forwarded_for_iterator.cut(l); |
516 | /* look for start of last item in list */ | |
517 | while (l > 0 && ! (p[l-1] == ',' || xisspace(p[l-1]))) | |
5e263176 | 518 | --l; |
3d674977 | 519 | asciiaddr = p+l; |
fafd0efa | 520 | if ((addr = asciiaddr)) { |
3d674977 AJ |
521 | request->indirect_client_addr = addr; |
522 | request->x_forwarded_for_iterator.cut(l); | |
d096ace1 AJ |
523 | calloutContext->acl_checklist = clientAclChecklistCreate(Config.accessList.followXFF, http); |
524 | if (!Config.onoff.acl_uses_indirect_client) { | |
525 | /* override the default src_addr tested if we have to go deeper than one level into XFF */ | |
526 | Filled(calloutContext->acl_checklist)->src_addr = request->indirect_client_addr; | |
3d674977 | 527 | } |
d096ace1 | 528 | calloutContext->acl_checklist->nonBlockingCheck(clientFollowXForwardedForCheck, data); |
3d674977 AJ |
529 | return; |
530 | } | |
531 | } /*if (answer == ACCESS_ALLOWED && | |
532 | request->x_forwarded_for_iterator.size () != 0)*/ | |
533 | ||
534 | /* clean up, and pass control to clientAccessCheck */ | |
26ac0430 | 535 | if (Config.onoff.log_uses_indirect_client) { |
3d674977 AJ |
536 | /* |
537 | * Ensure that the access log shows the indirect client | |
538 | * instead of the direct client. | |
539 | */ | |
540 | ConnStateData *conn = http->getConn(); | |
541 | conn->log_addr = request->indirect_client_addr; | |
542 | } | |
543 | request->x_forwarded_for_iterator.clean(); | |
e857372a | 544 | request->flags.done_follow_x_forwarded_for = true; |
3d674977 | 545 | |
d096ace1 AJ |
546 | if (answer != ACCESS_ALLOWED && answer != ACCESS_DENIED) { |
547 | debugs(28, DBG_CRITICAL, "ERROR: Processing X-Forwarded-For. Stopping at IP address: " << request->indirect_client_addr ); | |
493d3865 AJ |
548 | } |
549 | ||
550 | /* process actual access ACL as normal. */ | |
551 | calloutContext->clientAccessCheck(); | |
3d674977 AJ |
552 | } |
553 | #endif /* FOLLOW_X_FORWARDED_FOR */ | |
554 | ||
fe97983f AJ |
555 | static void |
556 | hostHeaderIpVerifyWrapper(const ipcache_addrs* ia, const DnsLookupDetails &dns, void *data) | |
557 | { | |
558 | ClientRequestContext *c = static_cast<ClientRequestContext*>(data); | |
559 | c->hostHeaderIpVerify(ia, dns); | |
560 | } | |
561 | ||
562 | void | |
563 | ClientRequestContext::hostHeaderIpVerify(const ipcache_addrs* ia, const DnsLookupDetails &dns) | |
564 | { | |
565 | Comm::ConnectionPointer clientConn = http->getConn()->clientConnection; | |
566 | ||
567 | // note the DNS details for the transaction stats. | |
568 | http->request->recordLookup(dns); | |
569 | ||
570 | if (ia != NULL && ia->count > 0) { | |
571 | // Is the NAT destination IP in DNS? | |
5086523e | 572 | for (int i = 0; i < ia->count; ++i) { |
fe97983f AJ |
573 | if (clientConn->local.matchIPAddr(ia->in_addrs[i]) == 0) { |
574 | debugs(85, 3, HERE << "validate IP " << clientConn->local << " possible from Host:"); | |
e857372a | 575 | http->request->flags.hostVerified = true; |
fe97983f AJ |
576 | http->doCallouts(); |
577 | return; | |
578 | } | |
579 | debugs(85, 3, HERE << "validate IP " << clientConn->local << " non-match from Host: IP " << ia->in_addrs[i]); | |
580 | } | |
581 | } | |
582 | debugs(85, 3, HERE << "FAIL: validate IP " << clientConn->local << " possible from Host:"); | |
05b28f84 | 583 | hostHeaderVerifyFailed("local IP", "any domain IP"); |
fe97983f AJ |
584 | } |
585 | ||
586 | void | |
05b28f84 | 587 | ClientRequestContext::hostHeaderVerifyFailed(const char *A, const char *B) |
fe97983f | 588 | { |
2962f8b8 AJ |
589 | // IP address validation for Host: failed. Admin wants to ignore them. |
590 | // NP: we do not yet handle CONNECT tunnels well, so ignore for them | |
c2a7cefd | 591 | if (!Config.onoff.hostStrictVerify && http->request->method != Http::METHOD_CONNECT) { |
2962f8b8 AJ |
592 | debugs(85, 3, "SECURITY ALERT: Host header forgery detected on " << http->getConn()->clientConnection << |
593 | " (" << A << " does not match " << B << ") on URL: " << urlCanonical(http->request)); | |
594 | ||
450fe1cb | 595 | // NP: it is tempting to use 'flags.noCache' but that is all about READing cache data. |
2962f8b8 | 596 | // The problems here are about WRITE for new cache content, which means flags.cachable |
e857372a | 597 | http->request->flags.cachable = false; // MUST NOT cache (for now) |
2962f8b8 | 598 | // XXX: when we have updated the cache key to base on raw-IP + URI this cacheable limit can go. |
e857372a | 599 | http->request->flags.hierarchical = false; // MUST NOT pass to peers (for now) |
2962f8b8 | 600 | // XXX: when we have sorted out the best way to relay requests properly to peers this hierarchical limit can go. |
567fe088 | 601 | http->doCallouts(); |
2962f8b8 AJ |
602 | return; |
603 | } | |
604 | ||
8f489ad7 AJ |
605 | debugs(85, DBG_IMPORTANT, "SECURITY ALERT: Host header forgery detected on " << |
606 | http->getConn()->clientConnection << " (" << A << " does not match " << B << ")"); | |
607 | debugs(85, DBG_IMPORTANT, "SECURITY ALERT: By user agent: " << http->request->header.getStr(HDR_USER_AGENT)); | |
608 | debugs(85, DBG_IMPORTANT, "SECURITY ALERT: on URL: " << urlCanonical(http->request)); | |
fe97983f AJ |
609 | |
610 | // IP address validation for Host: failed. reject the connection. | |
611 | clientStreamNode *node = (clientStreamNode *)http->client_stream.tail->prev->data; | |
612 | clientReplyContext *repContext = dynamic_cast<clientReplyContext *>(node->data.getRaw()); | |
613 | assert (repContext); | |
955394ce | 614 | repContext->setReplyToError(ERR_CONFLICT_HOST, Http::scConflict, |
fe97983f AJ |
615 | http->request->method, NULL, |
616 | http->getConn()->clientConnection->remote, | |
617 | http->request, | |
618 | NULL, | |
619 | #if USE_AUTH | |
620 | http->getConn() != NULL && http->getConn()->auth_user_request != NULL ? | |
621 | http->getConn()->auth_user_request : http->request->auth_user_request); | |
622 | #else | |
623 | NULL); | |
624 | #endif | |
625 | node = (clientStreamNode *)http->client_stream.tail->data; | |
626 | clientStreamRead(node, http, node->readBuffer); | |
627 | } | |
628 | ||
629 | void | |
630 | ClientRequestContext::hostHeaderVerify() | |
631 | { | |
632 | // Require a Host: header. | |
633 | const char *host = http->request->header.getStr(HDR_HOST); | |
fe97983f AJ |
634 | |
635 | if (!host) { | |
636 | // TODO: dump out the HTTP/1.1 error about missing host header. | |
637 | // otherwise this is fine, can't forge a header value when its not even set. | |
638 | debugs(85, 3, HERE << "validate skipped with no Host: header present."); | |
639 | http->doCallouts(); | |
640 | return; | |
641 | } | |
642 | ||
45e5102d | 643 | if (http->request->flags.internal) { |
8f489ad7 AJ |
644 | // TODO: kill this when URL handling allows partial URLs out of accel mode |
645 | // and we no longer screw with the URL just to add our internal host there | |
646 | debugs(85, 6, HERE << "validate skipped due to internal composite URL."); | |
647 | http->doCallouts(); | |
648 | return; | |
649 | } | |
650 | ||
fe97983f AJ |
651 | // Locate if there is a port attached, strip ready for IP lookup |
652 | char *portStr = NULL; | |
91663dce AJ |
653 | char *hostB = xstrdup(host); |
654 | host = hostB; | |
fe97983f AJ |
655 | if (host[0] == '[') { |
656 | // IPv6 literal. | |
fe97983f | 657 | portStr = strchr(hostB, ']'); |
91663dce AJ |
658 | if (portStr && *(++portStr) != ':') { |
659 | portStr = NULL; | |
fe97983f | 660 | } |
91663dce | 661 | } else { |
fe97983f | 662 | // Domain or IPv4 literal with port |
fe97983f | 663 | portStr = strrchr(hostB, ':'); |
91663dce AJ |
664 | } |
665 | ||
666 | uint16_t port = 0; | |
667 | if (portStr) { | |
668 | *portStr = '\0'; // strip the ':' | |
669 | if (*(++portStr) != '\0') | |
670 | port = xatoi(portStr); | |
fe97983f AJ |
671 | } |
672 | ||
673 | debugs(85, 3, HERE << "validate host=" << host << ", port=" << port << ", portStr=" << (portStr?portStr:"NULL")); | |
450fe1cb | 674 | if (http->request->flags.intercepted || http->request->flags.spoofClientIp) { |
ba4d9da0 | 675 | // verify the Host: port (if any) matches the apparent destination |
fe97983f | 676 | if (portStr && port != http->getConn()->clientConnection->local.GetPort()) { |
05b28f84 AJ |
677 | debugs(85, 3, HERE << "FAIL on validate port " << http->getConn()->clientConnection->local.GetPort() << |
678 | " matches Host: port " << port << " (" << portStr << ")"); | |
679 | hostHeaderVerifyFailed("intercepted port", portStr); | |
ba4d9da0 AJ |
680 | } else { |
681 | // XXX: match the scheme default port against the apparent destination | |
fe97983f | 682 | |
ba4d9da0 AJ |
683 | // verify the destination DNS is one of the Host: headers IPs |
684 | ipcache_nbgethostbyname(host, hostHeaderIpVerifyWrapper, this); | |
685 | } | |
06059513 | 686 | } else if (!Config.onoff.hostStrictVerify) { |
90529125 AJ |
687 | debugs(85, 3, HERE << "validate skipped."); |
688 | http->doCallouts(); | |
8f489ad7 AJ |
689 | } else if (strlen(host) != strlen(http->request->GetHost())) { |
690 | // Verify forward-proxy requested URL domain matches the Host: header | |
691 | debugs(85, 3, HERE << "FAIL on validate URL domain length " << http->request->GetHost() << " matches Host: " << host); | |
692 | hostHeaderVerifyFailed(host, http->request->GetHost()); | |
693 | } else if (matchDomainName(host, http->request->GetHost()) != 0) { | |
ba4d9da0 | 694 | // Verify forward-proxy requested URL domain matches the Host: header |
fe97983f | 695 | debugs(85, 3, HERE << "FAIL on validate URL domain " << http->request->GetHost() << " matches Host: " << host); |
05b28f84 | 696 | hostHeaderVerifyFailed(host, http->request->GetHost()); |
ba4d9da0 AJ |
697 | } else if (portStr && port != http->request->port) { |
698 | // Verify forward-proxy requested URL domain matches the Host: header | |
699 | debugs(85, 3, HERE << "FAIL on validate URL port " << http->request->port << " matches Host: port " << portStr); | |
700 | hostHeaderVerifyFailed("URL port", portStr); | |
c2a7cefd | 701 | } else if (!portStr && http->request->method != Http::METHOD_CONNECT && http->request->port != urlDefaultPort(http->request->protocol)) { |
ba4d9da0 | 702 | // Verify forward-proxy requested URL domain matches the Host: header |
65d2fdbf | 703 | // Special case: we don't have a default-port to check for CONNECT. Assume URL is correct. |
ba4d9da0 AJ |
704 | debugs(85, 3, HERE << "FAIL on validate URL port " << http->request->port << " matches Host: default port " << urlDefaultPort(http->request->protocol)); |
705 | hostHeaderVerifyFailed("URL port", "default port"); | |
706 | } else { | |
707 | // Okay no problem. | |
708 | debugs(85, 3, HERE << "validate passed."); | |
e857372a | 709 | http->request->flags.hostVerified = true; |
ba4d9da0 | 710 | http->doCallouts(); |
fe97983f | 711 | } |
ba4d9da0 | 712 | safe_free(hostB); |
fe97983f AJ |
713 | } |
714 | ||
edce4d98 | 715 | /* This is the entry point for external users of the client_side routines */ |
716 | void | |
de31d06f | 717 | ClientRequestContext::clientAccessCheck() |
edce4d98 | 718 | { |
fbe9e379 | 719 | #if FOLLOW_X_FORWARDED_FOR |
f1a1f20a | 720 | if (!http->request->flags.doneFollowXff() && |
26ac0430 AJ |
721 | Config.accessList.followXFF && |
722 | http->request->header.has(HDR_X_FORWARDED_FOR)) { | |
d096ace1 AJ |
723 | |
724 | /* we always trust the direct client address for actual use */ | |
725 | http->request->indirect_client_addr = http->request->client_addr; | |
fafd0efa | 726 | http->request->indirect_client_addr.SetPort(0); |
d096ace1 AJ |
727 | |
728 | /* setup the XFF iterator for processing */ | |
729 | http->request->x_forwarded_for_iterator = http->request->header.getList(HDR_X_FORWARDED_FOR); | |
730 | ||
731 | /* begin by checking to see if we trust direct client enough to walk XFF */ | |
732 | acl_checklist = clientAclChecklistCreate(Config.accessList.followXFF, http); | |
733 | acl_checklist->nonBlockingCheck(clientFollowXForwardedForCheck, this); | |
3d674977 AJ |
734 | return; |
735 | } | |
fbe9e379 | 736 | #endif |
493d3865 | 737 | |
b50e327b AJ |
738 | if (Config.accessList.http) { |
739 | acl_checklist = clientAclChecklistCreate(Config.accessList.http, http); | |
740 | acl_checklist->nonBlockingCheck(clientAccessCheckDoneWrapper, this); | |
741 | } else { | |
742 | debugs(0, DBG_CRITICAL, "No http_access configuration found. This will block ALL traffic"); | |
743 | clientAccessCheckDone(ACCESS_DENIED); | |
744 | } | |
edce4d98 | 745 | } |
746 | ||
533493da AJ |
747 | /** |
748 | * Identical in operation to clientAccessCheck() but performed later using different configured ACL list. | |
749 | * The default here is to allow all. Since the earlier http_access should do a default deny all. | |
750 | * This check is just for a last-minute denial based on adapted request headers. | |
751 | */ | |
752 | void | |
753 | ClientRequestContext::clientAccessCheck2() | |
754 | { | |
755 | if (Config.accessList.adapted_http) { | |
756 | acl_checklist = clientAclChecklistCreate(Config.accessList.adapted_http, http); | |
757 | acl_checklist->nonBlockingCheck(clientAccessCheckDoneWrapper, this); | |
758 | } else { | |
327e2131 | 759 | debugs(85, 2, HERE << "No adapted_http_access configuration. default: ALLOW"); |
533493da AJ |
760 | clientAccessCheckDone(ACCESS_ALLOWED); |
761 | } | |
762 | } | |
763 | ||
edce4d98 | 764 | void |
2efeb0b7 | 765 | clientAccessCheckDoneWrapper(allow_t answer, void *data) |
edce4d98 | 766 | { |
de31d06f | 767 | ClientRequestContext *calloutContext = (ClientRequestContext *) data; |
fbade053 | 768 | |
de31d06f | 769 | if (!calloutContext->httpStateIsValid()) |
62e76326 | 770 | return; |
62e76326 | 771 | |
de31d06f | 772 | calloutContext->clientAccessCheckDone(answer); |
773 | } | |
774 | ||
9d5e7196 AJ |
775 | void |
776 | ClientRequestContext::clientAccessCheckDone(const allow_t &answer) | |
de31d06f | 777 | { |
778 | acl_checklist = NULL; | |
edce4d98 | 779 | err_type page_id; |
955394ce | 780 | Http::StatusCode status; |
9d5e7196 AJ |
781 | debugs(85, 2, "The request " << |
782 | RequestMethodStr(http->request->method) << " " << | |
783 | http->uri << " is " << answer << | |
784 | ", because it matched '" << | |
785 | (AclMatchedName ? AclMatchedName : "NO ACL's") << "'" ); | |
f5691f9c | 786 | |
2f1431ea AJ |
787 | #if USE_AUTH |
788 | char const *proxy_auth_msg = "<null>"; | |
94a396a3 | 789 | if (http->getConn() != NULL && http->getConn()->auth_user_request != NULL) |
f5691f9c | 790 | proxy_auth_msg = http->getConn()->auth_user_request->denyMessage("<null>"); |
791 | else if (http->request->auth_user_request != NULL) | |
792 | proxy_auth_msg = http->request->auth_user_request->denyMessage("<null>"); | |
2f1431ea | 793 | #endif |
62e76326 | 794 | |
dd332b92 | 795 | if (answer != ACCESS_ALLOWED) { |
9d5e7196 | 796 | // auth has a grace period where credentials can be expired but okay not to challenge. |
309347ef | 797 | |
9d5e7196 AJ |
798 | /* Send an auth challenge or error */ |
799 | // XXX: do we still need aclIsProxyAuth() ? | |
dd332b92 | 800 | bool auth_challenge = (answer == ACCESS_AUTH_REQUIRED || aclIsProxyAuth(AclMatchedName)); |
9d5e7196 AJ |
801 | debugs(85, 5, "Access Denied: " << http->uri); |
802 | debugs(85, 5, "AclMatchedName = " << (AclMatchedName ? AclMatchedName : "<null>")); | |
2f1431ea | 803 | #if USE_AUTH |
9d5e7196 AJ |
804 | if (auth_challenge) |
805 | debugs(33, 5, "Proxy Auth Message = " << (proxy_auth_msg ? proxy_auth_msg : "<null>")); | |
2f1431ea | 806 | #endif |
9ce7856a | 807 | |
9d5e7196 AJ |
808 | /* |
809 | * NOTE: get page_id here, based on AclMatchedName because if | |
810 | * USE_DELAY_POOLS is enabled, then AclMatchedName gets clobbered in | |
811 | * the clientCreateStoreEntry() call just below. Pedro Ribeiro | |
812 | * <pribeiro@isel.pt> | |
813 | */ | |
814 | page_id = aclGetDenyInfoPage(&Config.denyInfoList, AclMatchedName, answer != ACCESS_AUTH_REQUIRED); | |
9ce7856a | 815 | |
9d5e7196 | 816 | http->logType = LOG_TCP_DENIED; |
62e76326 | 817 | |
9d5e7196 | 818 | if (auth_challenge) { |
2f1431ea | 819 | #if USE_AUTH |
450fe1cb | 820 | if (http->request->flags.sslBumped) { |
9d5e7196 | 821 | /*SSL Bumped request, authentication is not possible*/ |
955394ce | 822 | status = Http::scForbidden; |
9d5e7196 AJ |
823 | } else if (!http->flags.accel) { |
824 | /* Proxy authorisation needed */ | |
955394ce | 825 | status = Http::scProxyAuthenticationRequired; |
9d5e7196 AJ |
826 | } else { |
827 | /* WWW authorisation needed */ | |
955394ce | 828 | status = Http::scUnauthorized; |
9d5e7196 | 829 | } |
ed6163ef | 830 | #else |
9d5e7196 | 831 | // need auth, but not possible to do. |
955394ce | 832 | status = Http::scForbidden; |
ed6163ef | 833 | #endif |
9d5e7196 AJ |
834 | if (page_id == ERR_NONE) |
835 | page_id = ERR_CACHE_ACCESS_DENIED; | |
836 | } else { | |
955394ce | 837 | status = Http::scForbidden; |
ed6163ef | 838 | |
9d5e7196 AJ |
839 | if (page_id == ERR_NONE) |
840 | page_id = ERR_ACCESS_DENIED; | |
841 | } | |
62e76326 | 842 | |
9d5e7196 AJ |
843 | Ip::Address tmpnoaddr; |
844 | tmpnoaddr.SetNoAddr(); | |
87f237a9 | 845 | error = clientBuildError(page_id, status, |
68715527 CT |
846 | NULL, |
847 | http->getConn() != NULL ? http->getConn()->clientConnection->remote : tmpnoaddr, | |
848 | http->request | |
87f237a9 | 849 | ); |
68715527 | 850 | |
2f1431ea | 851 | #if USE_AUTH |
87f237a9 | 852 | error->auth_user_request = |
68715527 CT |
853 | http->getConn() != NULL && http->getConn()->auth_user_request != NULL ? |
854 | http->getConn()->auth_user_request : http->request->auth_user_request; | |
2f1431ea | 855 | #endif |
68715527 CT |
856 | |
857 | readNextRequest = true; | |
9d5e7196 | 858 | } |
de31d06f | 859 | |
dd332b92 | 860 | /* ACCESS_ALLOWED continues here ... */ |
de31d06f | 861 | safe_free(http->uri); |
862 | ||
863 | http->uri = xstrdup(urlCanonical(http->request)); | |
864 | ||
865 | http->doCallouts(); | |
866 | } | |
867 | ||
a83c6ed6 | 868 | #if USE_ADAPTATION |
de31d06f | 869 | void |
79628299 | 870 | ClientHttpRequest::noteAdaptationAclCheckDone(Adaptation::ServiceGroupPointer g) |
de31d06f | 871 | { |
a83c6ed6 | 872 | debugs(93,3,HERE << this << " adaptationAclCheckDone called"); |
6ec67de9 | 873 | |
e1381638 | 874 | #if ICAP_CLIENT |
79628299 | 875 | Adaptation::Icap::History::Pointer ih = request->icapHistory(); |
e1381638 | 876 | if (ih != NULL) { |
79628299 CT |
877 | if (getConn() != NULL) { |
878 | ih->rfc931 = getConn()->clientConnection->rfc931; | |
e1381638 | 879 | #if USE_SSL |
79628299 CT |
880 | assert(getConn()->clientConnection != NULL); |
881 | ih->ssluser = sslGetUserEmail(fd_table[getConn()->clientConnection->fd].ssl); | |
e1381638 | 882 | #endif |
3ff65596 | 883 | } |
79628299 CT |
884 | ih->log_uri = log_uri; |
885 | ih->req_sz = req_sz; | |
3ff65596 AR |
886 | } |
887 | #endif | |
888 | ||
a22e6cd3 AR |
889 | if (!g) { |
890 | debugs(85,3, HERE << "no adaptation needed"); | |
79628299 | 891 | doCallouts(); |
5f8252d2 | 892 | return; |
893 | } | |
de31d06f | 894 | |
79628299 | 895 | startAdaptation(g); |
edce4d98 | 896 | } |
897 | ||
de31d06f | 898 | #endif |
899 | ||
14cc8559 | 900 | static void |
2efeb0b7 | 901 | clientRedirectAccessCheckDone(allow_t answer, void *data) |
14cc8559 | 902 | { |
903 | ClientRequestContext *context = (ClientRequestContext *)data; | |
9d5e7196 AJ |
904 | ClientHttpRequest *http = context->http; |
905 | context->acl_checklist = NULL; | |
14cc8559 | 906 | |
907 | if (answer == ACCESS_ALLOWED) | |
9d5e7196 | 908 | redirectStart(http, clientRedirectDoneWrapper, context); |
bc98bc4b | 909 | else { |
3c2c35d3 | 910 | HelperReply nilReply; |
bc98bc4b AJ |
911 | context->clientRedirectDone(nilReply); |
912 | } | |
14cc8559 | 913 | } |
914 | ||
de31d06f | 915 | void |
916 | ClientRequestContext::clientRedirectStart() | |
14cc8559 | 917 | { |
48e7baac | 918 | debugs(33, 5, HERE << "'" << http->uri << "'"); |
14cc8559 | 919 | |
14cc8559 | 920 | if (Config.accessList.redirector) { |
de31d06f | 921 | acl_checklist = clientAclChecklistCreate(Config.accessList.redirector, http); |
922 | acl_checklist->nonBlockingCheck(clientRedirectAccessCheckDone, this); | |
14cc8559 | 923 | } else |
de31d06f | 924 | redirectStart(http, clientRedirectDoneWrapper, this); |
14cc8559 | 925 | } |
926 | ||
a8a0b1c2 EC |
927 | /** |
928 | * This methods handles Access checks result of StoreId access list. | |
929 | * Will handle as "ERR" (no change) in a case Access is not allowed. | |
930 | */ | |
931 | static void | |
932 | clientStoreIdAccessCheckDone(allow_t answer, void *data) | |
933 | { | |
934 | ClientRequestContext *context = static_cast<ClientRequestContext *>(data); | |
935 | ClientHttpRequest *http = context->http; | |
936 | context->acl_checklist = NULL; | |
937 | ||
938 | if (answer == ACCESS_ALLOWED) | |
939 | storeIdStart(http, clientStoreIdDoneWrapper, context); | |
940 | else { | |
941 | debugs(85, 3, "access denied expected ERR reply handling: " << answer); | |
942 | HelperReply nilReply; | |
943 | nilReply.result = HelperReply::Error; | |
944 | context->clientStoreIdDone(nilReply); | |
945 | } | |
946 | } | |
947 | ||
948 | /** | |
949 | * Start locating an alternative storeage ID string (if any) from admin | |
950 | * configured helper program. This is an asynchronous operation terminating in | |
951 | * ClientRequestContext::clientStoreIdDone() when completed. | |
952 | */ | |
953 | void | |
954 | ClientRequestContext::clientStoreIdStart() | |
955 | { | |
956 | debugs(33, 5,"'" << http->uri << "'"); | |
957 | ||
958 | if (Config.accessList.store_id) { | |
959 | acl_checklist = clientAclChecklistCreate(Config.accessList.store_id, http); | |
960 | acl_checklist->nonBlockingCheck(clientStoreIdAccessCheckDone, this); | |
961 | } else | |
962 | storeIdStart(http, clientStoreIdDoneWrapper, this); | |
963 | } | |
964 | ||
edce4d98 | 965 | static int |
59a1efb2 | 966 | clientHierarchical(ClientHttpRequest * http) |
edce4d98 | 967 | { |
968 | const char *url = http->uri; | |
190154cf | 969 | HttpRequest *request = http->request; |
60745f24 | 970 | HttpRequestMethod method = request->method; |
edce4d98 | 971 | const wordlist *p = NULL; |
972 | ||
2962f8b8 | 973 | // intercepted requests MUST NOT (yet) be sent to peers unless verified |
450fe1cb | 974 | if (!request->flags.hostVerified && (request->flags.intercepted || request->flags.spoofClientIp)) |
2962f8b8 AJ |
975 | return 0; |
976 | ||
69660be0 | 977 | /* |
978 | * IMS needs a private key, so we can use the hierarchy for IMS only if our | |
979 | * neighbors support private keys | |
980 | */ | |
62e76326 | 981 | |
45e5102d | 982 | if (request->flags.ims && !neighbors_do_private_keys) |
62e76326 | 983 | return 0; |
984 | ||
69660be0 | 985 | /* |
986 | * This is incorrect: authenticating requests can be sent via a hierarchy | |
06b97e72 | 987 | * (they can even be cached if the correct headers are set on the reply) |
edce4d98 | 988 | */ |
45e5102d | 989 | if (request->flags.auth) |
62e76326 | 990 | return 0; |
991 | ||
c2a7cefd | 992 | if (method == Http::METHOD_TRACE) |
62e76326 | 993 | return 1; |
994 | ||
c2a7cefd | 995 | if (method != Http::METHOD_GET) |
62e76326 | 996 | return 0; |
997 | ||
edce4d98 | 998 | /* scan hierarchy_stoplist */ |
999 | for (p = Config.hierarchy_stoplist; p; p = p->next) | |
62e76326 | 1000 | if (strstr(url, p->key)) |
1001 | return 0; | |
1002 | ||
450fe1cb | 1003 | if (request->flags.loopDetected) |
62e76326 | 1004 | return 0; |
1005 | ||
0c3d3f65 | 1006 | if (request->protocol == AnyP::PROTO_HTTP) |
c2a7cefd | 1007 | return method.respMaybeCacheable(); |
62e76326 | 1008 | |
0c3d3f65 | 1009 | if (request->protocol == AnyP::PROTO_GOPHER) |
62e76326 | 1010 | return gopherCachable(request); |
1011 | ||
39a19cb7 | 1012 | if (request->protocol == AnyP::PROTO_CACHE_OBJECT) |
62e76326 | 1013 | return 0; |
1014 | ||
edce4d98 | 1015 | return 1; |
1016 | } | |
1017 | ||
46a1f562 HN |
1018 | static void |
1019 | clientCheckPinning(ClientHttpRequest * http) | |
1020 | { | |
1021 | HttpRequest *request = http->request; | |
1022 | HttpHeader *req_hdr = &request->header; | |
1023 | ConnStateData *http_conn = http->getConn(); | |
1024 | ||
1025 | /* Internal requests such as those from ESI includes may be without | |
1026 | * a client connection | |
1027 | */ | |
1028 | if (!http_conn) | |
f54f527e | 1029 | return; |
46a1f562 | 1030 | |
450fe1cb FC |
1031 | request->flags.connectionAuthDisabled = http_conn->port->connection_auth_disabled; |
1032 | if (!request->flags.connectionAuthDisabled) { | |
73c36fd9 | 1033 | if (Comm::IsConnOpen(http_conn->pinning.serverConnection)) { |
46a1f562 | 1034 | if (http_conn->pinning.auth) { |
e857372a FC |
1035 | request->flags.connectionAuth = true; |
1036 | request->flags.auth = true; | |
46a1f562 | 1037 | } else { |
e857372a | 1038 | request->flags.connectionProxyAuth = true; |
46a1f562 | 1039 | } |
b1cf2350 AJ |
1040 | // These should already be linked correctly. |
1041 | assert(request->clientConnectionManager == http_conn); | |
46a1f562 HN |
1042 | } |
1043 | } | |
1044 | ||
1045 | /* check if connection auth is used, and flag as candidate for pinning | |
45e5102d | 1046 | * in such case. |
450fe1cb | 1047 | * Note: we may need to set flags.connectionAuth even if the connection |
46a1f562 HN |
1048 | * is already pinned if it was pinned earlier due to proxy auth |
1049 | */ | |
450fe1cb | 1050 | if (!request->flags.connectionAuth) { |
46a1f562 HN |
1051 | if (req_hdr->has(HDR_AUTHORIZATION) || req_hdr->has(HDR_PROXY_AUTHORIZATION)) { |
1052 | HttpHeaderPos pos = HttpHeaderInitPos; | |
1053 | HttpHeaderEntry *e; | |
1054 | int may_pin = 0; | |
1055 | while ((e = req_hdr->getEntry(&pos))) { | |
1056 | if (e->id == HDR_AUTHORIZATION || e->id == HDR_PROXY_AUTHORIZATION) { | |
1057 | const char *value = e->value.rawBuf(); | |
1058 | if (strncasecmp(value, "NTLM ", 5) == 0 | |
1059 | || | |
1060 | strncasecmp(value, "Negotiate ", 10) == 0 | |
1061 | || | |
1062 | strncasecmp(value, "Kerberos ", 9) == 0) { | |
1063 | if (e->id == HDR_AUTHORIZATION) { | |
e857372a | 1064 | request->flags.connectionAuth = true; |
46a1f562 HN |
1065 | may_pin = 1; |
1066 | } else { | |
e857372a | 1067 | request->flags.connectionProxyAuth = true; |
46a1f562 HN |
1068 | may_pin = 1; |
1069 | } | |
1070 | } | |
1071 | } | |
1072 | } | |
1073 | if (may_pin && !request->pinnedConnection()) { | |
b1cf2350 AJ |
1074 | // These should already be linked correctly. Just need the ServerConnection to pinn. |
1075 | assert(request->clientConnectionManager == http_conn); | |
46a1f562 HN |
1076 | } |
1077 | } | |
1078 | } | |
1079 | } | |
1080 | ||
edce4d98 | 1081 | static void |
59a1efb2 | 1082 | clientInterpretRequestHeaders(ClientHttpRequest * http) |
edce4d98 | 1083 | { |
190154cf | 1084 | HttpRequest *request = http->request; |
0ef77270 | 1085 | HttpHeader *req_hdr = &request->header; |
5086523e | 1086 | bool no_cache = false; |
edce4d98 | 1087 | const char *str; |
62e76326 | 1088 | |
edce4d98 | 1089 | request->imslen = -1; |
a9925b40 | 1090 | request->ims = req_hdr->getTime(HDR_IF_MODIFIED_SINCE); |
62e76326 | 1091 | |
edce4d98 | 1092 | if (request->ims > 0) |
e857372a | 1093 | request->flags.ims = true; |
62e76326 | 1094 | |
450fe1cb | 1095 | if (!request->flags.ignoreCc) { |
47fbd2a7 | 1096 | if (request->cache_control) { |
4ce6e3b5 | 1097 | if (request->cache_control->noCache()) |
5086523e | 1098 | no_cache=true; |
62e76326 | 1099 | |
adc2a453 | 1100 | // RFC 2616: treat Pragma:no-cache as if it was Cache-Control:no-cache when Cache-Control is missing |
47fbd2a7 | 1101 | } else if (req_hdr->has(HDR_PRAGMA)) |
cdf55306 AJ |
1102 | no_cache = req_hdr->hasListMember(HDR_PRAGMA,"no-cache",','); |
1103 | ||
432bc83c HN |
1104 | /* |
1105 | * Work around for supporting the Reload button in IE browsers when Squid | |
1106 | * is used as an accelerator or transparent proxy, by turning accelerated | |
1107 | * IMS request to no-cache requests. Now knows about IE 5.5 fix (is | |
1108 | * actually only fixed in SP1, but we can't tell whether we are talking to | |
1109 | * SP1 or not so all 5.5 versions are treated 'normally'). | |
1110 | */ | |
1111 | if (Config.onoff.ie_refresh) { | |
45e5102d | 1112 | if (http->flags.accel && request->flags.ims) { |
432bc83c HN |
1113 | if ((str = req_hdr->getStr(HDR_USER_AGENT))) { |
1114 | if (strstr(str, "MSIE 5.01") != NULL) | |
5086523e | 1115 | no_cache=true; |
432bc83c | 1116 | else if (strstr(str, "MSIE 5.0") != NULL) |
5086523e | 1117 | no_cache=true; |
432bc83c | 1118 | else if (strstr(str, "MSIE 4.") != NULL) |
5086523e | 1119 | no_cache=true; |
432bc83c | 1120 | else if (strstr(str, "MSIE 3.") != NULL) |
5086523e | 1121 | no_cache=true; |
432bc83c | 1122 | } |
62e76326 | 1123 | } |
1124 | } | |
edce4d98 | 1125 | } |
914b89a2 | 1126 | |
c2a7cefd | 1127 | if (request->method == Http::METHOD_OTHER) { |
5086523e | 1128 | no_cache=true; |
60745f24 | 1129 | } |
62e76326 | 1130 | |
edce4d98 | 1131 | if (no_cache) { |
626096be | 1132 | #if USE_HTTP_VIOLATIONS |
62e76326 | 1133 | |
1134 | if (Config.onoff.reload_into_ims) | |
e857372a | 1135 | request->flags.nocacheHack = true; |
62e76326 | 1136 | else if (refresh_nocache_hack) |
e857372a | 1137 | request->flags.nocacheHack = true; |
62e76326 | 1138 | else |
edce4d98 | 1139 | #endif |
62e76326 | 1140 | |
e857372a | 1141 | request->flags.noCache = true; |
edce4d98 | 1142 | } |
62e76326 | 1143 | |
0ef77270 | 1144 | /* ignore range header in non-GETs or non-HEADs */ |
c2a7cefd | 1145 | if (request->method == Http::METHOD_GET || request->method == Http::METHOD_HEAD) { |
56713d9a AR |
1146 | // XXX: initialize if we got here without HttpRequest::parseHeader() |
1147 | if (!request->range) | |
1148 | request->range = req_hdr->getRange(); | |
62e76326 | 1149 | |
1150 | if (request->range) { | |
e857372a | 1151 | request->flags.isRanged = true; |
62e76326 | 1152 | clientStreamNode *node = (clientStreamNode *)http->client_stream.tail->data; |
1153 | /* XXX: This is suboptimal. We should give the stream the range set, | |
1154 | * and thereby let the top of the stream set the offset when the | |
26ac0430 | 1155 | * size becomes known. As it is, we will end up requesting from 0 |
62e76326 | 1156 | * for evey -X range specification. |
1157 | * RBC - this may be somewhat wrong. We should probably set the range | |
1158 | * iter up at this point. | |
1159 | */ | |
1160 | node->readBuffer.offset = request->range->lowestOffset(0); | |
1161 | http->range_iter.pos = request->range->begin(); | |
1162 | http->range_iter.valid = true; | |
1163 | } | |
edce4d98 | 1164 | } |
62e76326 | 1165 | |
0ef77270 | 1166 | /* Only HEAD and GET requests permit a Range or Request-Range header. |
1167 | * If these headers appear on any other type of request, delete them now. | |
1168 | */ | |
1169 | else { | |
1170 | req_hdr->delById(HDR_RANGE); | |
1171 | req_hdr->delById(HDR_REQUEST_RANGE); | |
56713d9a | 1172 | delete request->range; |
0ef77270 | 1173 | request->range = NULL; |
1174 | } | |
1175 | ||
a9925b40 | 1176 | if (req_hdr->has(HDR_AUTHORIZATION)) |
e857372a | 1177 | request->flags.auth = true; |
62e76326 | 1178 | |
46a1f562 | 1179 | clientCheckPinning(http); |
d67acb4e | 1180 | |
edce4d98 | 1181 | if (request->login[0] != '\0') |
e857372a | 1182 | request->flags.auth = true; |
62e76326 | 1183 | |
a9925b40 | 1184 | if (req_hdr->has(HDR_VIA)) { |
30abd221 | 1185 | String s = req_hdr->getList(HDR_VIA); |
62e76326 | 1186 | /* |
3c4fcf0f | 1187 | * ThisCache cannot be a member of Via header, "1.1 ThisCache" can. |
62e76326 | 1188 | * Note ThisCache2 has a space prepended to the hostname so we don't |
1189 | * accidentally match super-domains. | |
1190 | */ | |
1191 | ||
1192 | if (strListIsSubstr(&s, ThisCache2, ',')) { | |
1193 | debugObj(33, 1, "WARNING: Forwarding loop detected for:\n", | |
1194 | request, (ObjPackMethod) & httpRequestPack); | |
e857372a | 1195 | request->flags.loopDetected = true; |
62e76326 | 1196 | } |
1197 | ||
21f6708d | 1198 | #if USE_FORW_VIA_DB |
bb790702 | 1199 | fvdbCountVia(s.termedBuf()); |
62e76326 | 1200 | |
edce4d98 | 1201 | #endif |
62e76326 | 1202 | |
30abd221 | 1203 | s.clean(); |
edce4d98 | 1204 | } |
62e76326 | 1205 | |
21f6708d | 1206 | #if USE_FORW_VIA_DB |
62e76326 | 1207 | |
a9925b40 | 1208 | if (req_hdr->has(HDR_X_FORWARDED_FOR)) { |
30abd221 | 1209 | String s = req_hdr->getList(HDR_X_FORWARDED_FOR); |
bb790702 | 1210 | fvdbCountForw(s.termedBuf()); |
30abd221 | 1211 | s.clean(); |
edce4d98 | 1212 | } |
62e76326 | 1213 | |
edce4d98 | 1214 | #endif |
62e76326 | 1215 | |
c2a7cefd | 1216 | request->flags.cachable = http->request->maybeCacheable(); |
62e76326 | 1217 | |
edce4d98 | 1218 | if (clientHierarchical(http)) |
e857372a | 1219 | request->flags.hierarchical = true; |
62e76326 | 1220 | |
bf8fe701 | 1221 | debugs(85, 5, "clientInterpretRequestHeaders: REQ_NOCACHE = " << |
450fe1cb | 1222 | (request->flags.noCache ? "SET" : "NOT SET")); |
bf8fe701 | 1223 | debugs(85, 5, "clientInterpretRequestHeaders: REQ_CACHABLE = " << |
45e5102d | 1224 | (request->flags.cachable ? "SET" : "NOT SET")); |
bf8fe701 | 1225 | debugs(85, 5, "clientInterpretRequestHeaders: REQ_HIERARCHICAL = " << |
45e5102d | 1226 | (request->flags.hierarchical ? "SET" : "NOT SET")); |
62e76326 | 1227 | |
edce4d98 | 1228 | } |
1229 | ||
1230 | void | |
e166785a | 1231 | clientRedirectDoneWrapper(void *data, const HelperReply &result) |
edce4d98 | 1232 | { |
de31d06f | 1233 | ClientRequestContext *calloutContext = (ClientRequestContext *)data; |
db02222f | 1234 | |
de31d06f | 1235 | if (!calloutContext->httpStateIsValid()) |
62e76326 | 1236 | return; |
62e76326 | 1237 | |
de31d06f | 1238 | calloutContext->clientRedirectDone(result); |
1239 | } | |
1240 | ||
a8a0b1c2 EC |
1241 | void |
1242 | clientStoreIdDoneWrapper(void *data, const HelperReply &result) | |
1243 | { | |
1244 | ClientRequestContext *calloutContext = (ClientRequestContext *)data; | |
1245 | ||
1246 | if (!calloutContext->httpStateIsValid()) | |
1247 | return; | |
1248 | ||
1249 | calloutContext->clientStoreIdDone(result); | |
1250 | } | |
1251 | ||
de31d06f | 1252 | void |
e166785a | 1253 | ClientRequestContext::clientRedirectDone(const HelperReply &reply) |
de31d06f | 1254 | { |
190154cf | 1255 | HttpRequest *old_request = http->request; |
e166785a | 1256 | debugs(85, 5, HERE << "'" << http->uri << "' result=" << reply); |
de31d06f | 1257 | assert(redirect_state == REDIRECT_PENDING); |
1258 | redirect_state = REDIRECT_DONE; | |
62e76326 | 1259 | |
d06e17ea AJ |
1260 | // copy the URL rewriter response Notes to the HTTP request for logging |
1261 | // do it early to ensure that no matter what the outcome the notes are present. | |
1262 | // TODO put them straight into the transaction state record (ALE?) eventually | |
1263 | if (!old_request->helperNotes) | |
1264 | old_request->helperNotes = new Notes; | |
1265 | old_request->helperNotes->add(reply.notes); | |
1266 | ||
63fc9fb5 | 1267 | switch (reply.result) { |
d06e17ea AJ |
1268 | case HelperReply::Unknown: |
1269 | case HelperReply::TT: | |
1270 | // Handler in redirect.cc should have already mapped Unknown | |
1271 | // IF it contained valid entry for the old URL-rewrite helper protocol | |
1272 | debugs(85, DBG_IMPORTANT, "ERROR: URL rewrite helper returned invalid result code. Wrong helper? " << reply); | |
1273 | break; | |
1274 | ||
1275 | case HelperReply::BrokenHelper: | |
1276 | debugs(85, DBG_IMPORTANT, "ERROR: URL rewrite helper: " << reply << ", attempt #" << (redirect_fail_count+1) << " of 2"); | |
1277 | if (redirect_fail_count < 2) { // XXX: make this configurable ? | |
1278 | ++redirect_fail_count; | |
1279 | // reset state flag to try redirector again from scratch. | |
1280 | redirect_done = false; | |
1281 | } | |
1282 | break; | |
1283 | ||
1284 | case HelperReply::Error: | |
1285 | // no change to be done. | |
1286 | break; | |
62e76326 | 1287 | |
d06e17ea AJ |
1288 | case HelperReply::Okay: { |
1289 | // #1: redirect with a specific status code OK status=NNN url="..." | |
1290 | // #2: redirect with a default status code OK url="..." | |
1291 | // #3: re-write the URL OK rewrite-url="..." | |
1292 | ||
1293 | Note::Pointer statusNote = reply.notes.find("status"); | |
1294 | Note::Pointer urlNote = reply.notes.find("url"); | |
1295 | ||
1296 | if (urlNote != NULL) { | |
1297 | // HTTP protocol redirect to be done. | |
1298 | ||
1299 | // TODO: change default redirect status for appropriate requests | |
1300 | // Squid defaults to 302 status for now for better compatibility with old clients. | |
955394ce AJ |
1301 | // HTTP/1.0 client should get 302 (Http::scMovedTemporarily) |
1302 | // HTTP/1.1 client contacting reverse-proxy should get 307 (Http::scTemporaryRedirect) | |
1303 | // HTTP/1.1 client being diverted by forward-proxy should get 303 (Http::scSeeOther) | |
1304 | Http::StatusCode status = Http::scMovedTemporarily; | |
d06e17ea AJ |
1305 | if (statusNote != NULL) { |
1306 | const char * result = statusNote->firstValue(); | |
955394ce | 1307 | status = static_cast<Http::StatusCode>(atoi(result)); |
d06e17ea | 1308 | } |
62e76326 | 1309 | |
955394ce AJ |
1310 | if (status == Http::scMovedPermanently |
1311 | || status == Http::scMovedTemporarily | |
1312 | || status == Http::scSeeOther | |
1313 | || status == Http::scPermanentRedirect | |
1314 | || status == Http::scTemporaryRedirect) { | |
62e76326 | 1315 | http->redirect.status = status; |
d06e17ea | 1316 | http->redirect.location = xstrdup(urlNote->firstValue()); |
e5b677f0 | 1317 | // TODO: validate the URL produced here is RFC 2616 compliant absolute URI |
62e76326 | 1318 | } else { |
d06e17ea | 1319 | debugs(85, DBG_CRITICAL, "ERROR: URL-rewrite produces invalid " << status << " redirect Location: " << urlNote->firstValue()); |
62e76326 | 1320 | } |
d06e17ea AJ |
1321 | } else { |
1322 | // URL-rewrite wanted. Ew. | |
1323 | urlNote = reply.notes.find("rewrite-url"); | |
1324 | ||
1325 | // prevent broken helpers causing too much damage. If old URL == new URL skip the re-write. | |
1326 | if (urlNote != NULL && strcmp(urlNote->firstValue(), http->uri)) { | |
1327 | // XXX: validate the URL properly *without* generating a whole new request object right here. | |
1328 | // XXX: the clone() should be done only AFTER we know the new URL is valid. | |
1329 | HttpRequest *new_request = old_request->clone(); | |
1330 | if (urlParse(old_request->method, const_cast<char*>(urlNote->firstValue()), new_request)) { | |
1331 | debugs(61,2, HERE << "URL-rewriter diverts URL from " << urlCanonical(old_request) << " to " << urlCanonical(new_request)); | |
1332 | ||
1333 | // update the new request to flag the re-writing was done on it | |
e857372a | 1334 | new_request->flags.redirected = true; |
d06e17ea AJ |
1335 | |
1336 | // unlink bodypipe from the old request. Not needed there any longer. | |
1337 | if (old_request->body_pipe != NULL) { | |
1338 | old_request->body_pipe = NULL; | |
1339 | debugs(61,2, HERE << "URL-rewriter diverts body_pipe " << new_request->body_pipe << | |
1340 | " from request " << old_request << " to " << new_request); | |
1341 | } | |
9be14530 | 1342 | |
d06e17ea AJ |
1343 | // update the current working ClientHttpRequest fields |
1344 | safe_free(http->uri); | |
1345 | http->uri = xstrdup(urlCanonical(new_request)); | |
1346 | HTTPMSGUNLOCK(old_request); | |
b248c2a3 AJ |
1347 | http->request = new_request; |
1348 | HTTPMSGLOCK(http->request); | |
d06e17ea AJ |
1349 | } else { |
1350 | debugs(85, DBG_CRITICAL, "ERROR: URL-rewrite produces invalid request: " << | |
1351 | old_request->method << " " << urlNote->firstValue() << " " << old_request->http_ver); | |
1352 | delete new_request; | |
1353 | } | |
9be14530 | 1354 | } |
74b48915 | 1355 | } |
edce4d98 | 1356 | } |
d06e17ea AJ |
1357 | break; |
1358 | } | |
62e76326 | 1359 | |
edce4d98 | 1360 | /* FIXME PIPELINE: This is innacurate during pipelining */ |
62e76326 | 1361 | |
73c36fd9 AJ |
1362 | if (http->getConn() != NULL && Comm::IsConnOpen(http->getConn()->clientConnection)) |
1363 | fd_note(http->getConn()->clientConnection->fd, http->uri); | |
62e76326 | 1364 | |
c8be6d7b | 1365 | assert(http->uri); |
62e76326 | 1366 | |
de31d06f | 1367 | http->doCallouts(); |
edce4d98 | 1368 | } |
1369 | ||
a8a0b1c2 EC |
1370 | /** |
1371 | * This method handles the different replies from StoreID helper. | |
1372 | */ | |
1373 | void | |
1374 | ClientRequestContext::clientStoreIdDone(const HelperReply &reply) | |
1375 | { | |
1376 | HttpRequest *old_request = http->request; | |
1377 | debugs(85, 5, "'" << http->uri << "' result=" << reply); | |
1378 | assert(store_id_state == REDIRECT_PENDING); | |
1379 | store_id_state = REDIRECT_DONE; | |
1380 | ||
1381 | // copy the helper response Notes to the HTTP request for logging | |
1382 | // do it early to ensure that no matter what the outcome the notes are present. | |
1383 | // TODO put them straight into the transaction state record (ALE?) eventually | |
1384 | if (!old_request->helperNotes) | |
1385 | old_request->helperNotes = new Notes; | |
1386 | old_request->helperNotes->add(reply.notes); | |
1387 | ||
1388 | switch (reply.result) { | |
1389 | case HelperReply::Unknown: | |
1390 | case HelperReply::TT: | |
1391 | // Handler in redirect.cc should have already mapped Unknown | |
1392 | // IF it contained valid entry for the old helper protocol | |
1393 | debugs(85, DBG_IMPORTANT, "ERROR: storeID helper returned invalid result code. Wrong helper? " << reply); | |
1394 | break; | |
1395 | ||
1396 | case HelperReply::BrokenHelper: | |
1397 | debugs(85, DBG_IMPORTANT, "ERROR: storeID helper: " << reply << ", attempt #" << (store_id_fail_count+1) << " of 2"); | |
1398 | if (store_id_fail_count < 2) { // XXX: make this configurable ? | |
1399 | ++store_id_fail_count; | |
1400 | // reset state flag to try StoreID again from scratch. | |
1401 | store_id_done = false; | |
1402 | } | |
1403 | break; | |
1404 | ||
1405 | case HelperReply::Error: | |
1406 | // no change to be done. | |
1407 | break; | |
1408 | ||
1409 | case HelperReply::Okay: { | |
1410 | Note::Pointer urlNote = reply.notes.find("store-id"); | |
1411 | ||
1412 | // prevent broken helpers causing too much damage. If old URL == new URL skip the re-write. | |
1413 | if (urlNote != NULL && strcmp(urlNote->firstValue(), http->uri) ) { | |
1414 | // Debug section required for some very specific cases. | |
1415 | debugs(85, 9, "Setting storeID with: " << urlNote->firstValue() ); | |
1416 | http->request->store_id = urlNote->firstValue(); | |
1417 | http->store_id = urlNote->firstValue(); | |
1418 | } | |
1419 | } | |
1420 | break; | |
1421 | } | |
1422 | ||
1423 | http->doCallouts(); | |
1424 | } | |
1425 | ||
b50e327b AJ |
1426 | /** Test cache allow/deny configuration |
1427 | * Sets flags.cachable=1 if caching is not denied. | |
1428 | */ | |
edce4d98 | 1429 | void |
8e2745f4 | 1430 | ClientRequestContext::checkNoCache() |
edce4d98 | 1431 | { |
b50e327b AJ |
1432 | if (Config.accessList.noCache) { |
1433 | acl_checklist = clientAclChecklistCreate(Config.accessList.noCache, http); | |
1434 | acl_checklist->nonBlockingCheck(checkNoCacheDoneWrapper, this); | |
1435 | } else { | |
1436 | /* unless otherwise specified, we try to cache. */ | |
2efeb0b7 | 1437 | checkNoCacheDone(ACCESS_ALLOWED); |
b50e327b | 1438 | } |
edce4d98 | 1439 | } |
1440 | ||
de31d06f | 1441 | static void |
2efeb0b7 | 1442 | checkNoCacheDoneWrapper(allow_t answer, void *data) |
edce4d98 | 1443 | { |
de31d06f | 1444 | ClientRequestContext *calloutContext = (ClientRequestContext *) data; |
e4a67a80 | 1445 | |
de31d06f | 1446 | if (!calloutContext->httpStateIsValid()) |
1447 | return; | |
1448 | ||
1449 | calloutContext->checkNoCacheDone(answer); | |
8e2745f4 | 1450 | } |
4fb35c3c | 1451 | |
8e2745f4 | 1452 | void |
2efeb0b7 | 1453 | ClientRequestContext::checkNoCacheDone(const allow_t &answer) |
62e76326 | 1454 | { |
8e2745f4 | 1455 | acl_checklist = NULL; |
45e5102d | 1456 | http->request->flags.cachable = (answer == ACCESS_ALLOWED); |
de31d06f | 1457 | http->doCallouts(); |
edce4d98 | 1458 | } |
1459 | ||
e0c0d54c CT |
1460 | #if USE_SSL |
1461 | bool | |
1462 | ClientRequestContext::sslBumpAccessCheck() | |
1463 | { | |
08097970 AR |
1464 | // If SSL connection tunneling or bumping decision has been made, obey it. |
1465 | const Ssl::BumpMode bumpMode = http->getConn()->sslBumpMode; | |
1466 | if (bumpMode != Ssl::bumpEnd) { | |
1467 | debugs(85, 5, HERE << "SslBump already decided (" << bumpMode << | |
1468 | "), " << "ignoring ssl_bump for " << http->getConn()); | |
71cae389 | 1469 | http->al->ssl.bumpMode = bumpMode; // inherited from bumped connection |
08097970 AR |
1470 | return false; |
1471 | } | |
e0c0d54c | 1472 | |
08097970 AR |
1473 | // If we have not decided yet, decide whether to bump now. |
1474 | ||
1475 | // Bumping here can only start with a CONNECT request on a bumping port | |
1476 | // (bumping of intercepted SSL conns is decided before we get 1st request). | |
1477 | // We also do not bump redirected CONNECT requests. | |
c2a7cefd | 1478 | if (http->request->method != Http::METHOD_CONNECT || http->redirect.status || |
6a25a046 FC |
1479 | !Config.accessList.ssl_bump || |
1480 | !http->getConn()->port->flags.tunnelSslBumping) { | |
71cae389 | 1481 | http->al->ssl.bumpMode = Ssl::bumpEnd; // SslBump does not apply; log - |
08097970 | 1482 | debugs(85, 5, HERE << "cannot SslBump this request"); |
e0c0d54c CT |
1483 | return false; |
1484 | } | |
08097970 AR |
1485 | |
1486 | // Do not bump during authentication: clients would not proxy-authenticate | |
1487 | // if we delay a 407 response and respond with 200 OK to CONNECT. | |
955394ce | 1488 | if (error && error->httpStatus == Http::scProxyAuthenticationRequired) { |
71cae389 | 1489 | http->al->ssl.bumpMode = Ssl::bumpEnd; // SslBump does not apply; log - |
08097970 AR |
1490 | debugs(85, 5, HERE << "no SslBump during proxy authentication"); |
1491 | return false; | |
1492 | } | |
1493 | ||
1494 | debugs(85, 5, HERE << "SslBump possible, checking ACL"); | |
1495 | ||
eb898410 AJ |
1496 | ACLFilledChecklist *aclChecklist = clientAclChecklistCreate(Config.accessList.ssl_bump, http); |
1497 | aclChecklist->nonBlockingCheck(sslBumpAccessCheckDoneWrapper, this); | |
08097970 | 1498 | return true; |
e0c0d54c CT |
1499 | } |
1500 | ||
f8901ea9 | 1501 | /** |
e0c0d54c CT |
1502 | * A wrapper function to use the ClientRequestContext::sslBumpAccessCheckDone method |
1503 | * as ACLFilledChecklist callback | |
1504 | */ | |
1505 | static void | |
2efeb0b7 | 1506 | sslBumpAccessCheckDoneWrapper(allow_t answer, void *data) |
e0c0d54c CT |
1507 | { |
1508 | ClientRequestContext *calloutContext = static_cast<ClientRequestContext *>(data); | |
9d5e7196 AJ |
1509 | |
1510 | if (!calloutContext->httpStateIsValid()) | |
1511 | return; | |
ed6163ef | 1512 | calloutContext->sslBumpAccessCheckDone(answer); |
e0c0d54c CT |
1513 | } |
1514 | ||
1515 | void | |
ed6163ef | 1516 | ClientRequestContext::sslBumpAccessCheckDone(const allow_t &answer) |
e0c0d54c | 1517 | { |
ed6163ef AJ |
1518 | if (!httpStateIsValid()) |
1519 | return; | |
1520 | ||
08097970 | 1521 | const Ssl::BumpMode bumpMode = answer == ACCESS_ALLOWED ? |
87f237a9 | 1522 | static_cast<Ssl::BumpMode>(answer.kind) : Ssl::bumpNone; |
08097970 | 1523 | http->sslBumpNeed(bumpMode); // for processRequest() to bump if needed |
71cae389 | 1524 | http->al->ssl.bumpMode = bumpMode; // for logging |
caf3666d | 1525 | |
e0c0d54c CT |
1526 | http->doCallouts(); |
1527 | } | |
1528 | #endif | |
1529 | ||
69660be0 | 1530 | /* |
1531 | * Identify requests that do not go through the store and client side stream | |
1532 | * and forward them to the appropriate location. All other requests, request | |
1533 | * them. | |
edce4d98 | 1534 | */ |
1535 | void | |
8e2745f4 | 1536 | ClientHttpRequest::processRequest() |
edce4d98 | 1537 | { |
60745f24 | 1538 | debugs(85, 4, "clientProcessRequest: " << RequestMethodStr(request->method) << " '" << uri << "'"); |
62e76326 | 1539 | |
c2a7cefd | 1540 | if (request->method == Http::METHOD_CONNECT && !redirect.status) { |
3712be3f | 1541 | #if USE_SSL |
31281814 AJ |
1542 | if (sslBumpNeeded()) { |
1543 | sslBumpStart(); | |
1544 | return; | |
1545 | } | |
3712be3f | 1546 | #endif |
62e76326 | 1547 | logType = LOG_TCP_MISS; |
f84dd7eb | 1548 | getConn()->stopReading(); // tunnels read for themselves |
41ebd397 | 1549 | tunnelStart(this, &out.size, &al->http.code); |
62e76326 | 1550 | return; |
edce4d98 | 1551 | } |
62e76326 | 1552 | |
8e2745f4 | 1553 | httpStart(); |
1554 | } | |
1555 | ||
1556 | void | |
1557 | ClientHttpRequest::httpStart() | |
1558 | { | |
559da936 | 1559 | PROF_start(httpStart); |
8e2745f4 | 1560 | logType = LOG_TAG_NONE; |
02c8dde5 | 1561 | debugs(85, 4, LogTags_str[logType] << " for '" << uri << "'"); |
bf8fe701 | 1562 | |
edce4d98 | 1563 | /* no one should have touched this */ |
8e2745f4 | 1564 | assert(out.offset == 0); |
edce4d98 | 1565 | /* Use the Stream Luke */ |
8e2745f4 | 1566 | clientStreamNode *node = (clientStreamNode *)client_stream.tail->data; |
1567 | clientStreamRead(node, this, node->readBuffer); | |
559da936 | 1568 | PROF_stop(httpStart); |
edce4d98 | 1569 | } |
0655fa4d | 1570 | |
3712be3f | 1571 | #if USE_SSL |
1572 | ||
e0c0d54c | 1573 | void |
08097970 | 1574 | ClientHttpRequest::sslBumpNeed(Ssl::BumpMode mode) |
e0c0d54c | 1575 | { |
caf3666d | 1576 | debugs(83, 3, HERE << "sslBump required: "<< Ssl::bumpMode(mode)); |
08097970 | 1577 | sslBumpNeed_ = mode; |
3712be3f | 1578 | } |
1579 | ||
1580 | // called when comm_write has completed | |
1581 | static void | |
e0d28505 | 1582 | SslBumpEstablish(const Comm::ConnectionPointer &, char *, size_t, comm_err_t errflag, int, void *data) |
3712be3f | 1583 | { |
1584 | ClientHttpRequest *r = static_cast<ClientHttpRequest*>(data); | |
1585 | debugs(85, 5, HERE << "responded to CONNECT: " << r << " ? " << errflag); | |
1586 | ||
1587 | assert(r && cbdataReferenceValid(r)); | |
1588 | r->sslBumpEstablish(errflag); | |
1589 | } | |
1590 | ||
1591 | void | |
1592 | ClientHttpRequest::sslBumpEstablish(comm_err_t errflag) | |
1593 | { | |
1594 | // Bail out quickly on COMM_ERR_CLOSING - close handlers will tidy up | |
1595 | if (errflag == COMM_ERR_CLOSING) | |
1596 | return; | |
1597 | ||
1598 | if (errflag) { | |
1fa35be8 | 1599 | debugs(85, 3, HERE << "CONNECT response failure in SslBump: " << errflag); |
bbc83914 | 1600 | getConn()->clientConnection->close(); |
3712be3f | 1601 | return; |
1602 | } | |
1603 | ||
40d8be97 AR |
1604 | // We lack HttpReply which logRequest() uses to log the status code. |
1605 | // TODO: Use HttpReply instead of the "200 Connection established" string. | |
71cae389 | 1606 | al->http.code = 200; |
40d8be97 | 1607 | |
21512911 CT |
1608 | #if USE_AUTH |
1609 | // Preserve authentication info for the ssl-bumped request | |
1610 | if (request->auth_user_request != NULL) | |
1611 | getConn()->auth_user_request = request->auth_user_request; | |
1612 | #endif | |
03f00a11 | 1613 | |
08097970 AR |
1614 | assert(sslBumpNeeded()); |
1615 | getConn()->switchToHttps(request, sslBumpNeed_); | |
3712be3f | 1616 | } |
1617 | ||
1618 | void | |
1619 | ClientHttpRequest::sslBumpStart() | |
1620 | { | |
08097970 AR |
1621 | debugs(85, 5, HERE << "Confirming " << Ssl::bumpMode(sslBumpNeed_) << |
1622 | "-bumped CONNECT tunnel on FD " << getConn()->clientConnection); | |
1623 | getConn()->sslBumpMode = sslBumpNeed_; | |
3712be3f | 1624 | |
08097970 | 1625 | // send an HTTP 200 response to kick client SSL negotiation |
3712be3f | 1626 | // TODO: Unify with tunnel.cc and add a Server(?) header |
b0388924 | 1627 | static const char *const conn_established = "HTTP/1.1 200 Connection established\r\n\r\n"; |
ec41b64c AJ |
1628 | AsyncCall::Pointer call = commCbCall(85, 5, "ClientSocketContext::sslBumpEstablish", |
1629 | CommIoCbPtrFun(&SslBumpEstablish, this)); | |
73c36fd9 | 1630 | Comm::Write(getConn()->clientConnection, conn_established, strlen(conn_established), call, NULL); |
3712be3f | 1631 | } |
1632 | ||
1633 | #endif | |
1634 | ||
0655fa4d | 1635 | bool |
1636 | ClientHttpRequest::gotEnough() const | |
1637 | { | |
86a2f789 | 1638 | /** TODO: should be querying the stream. */ |
7173d5b0 | 1639 | int64_t contentLength = |
06a5ae20 | 1640 | memObject()->getReply()->bodySize(request->method); |
0655fa4d | 1641 | assert(contentLength >= 0); |
1642 | ||
1643 | if (out.offset < contentLength) | |
1644 | return false; | |
1645 | ||
1646 | return true; | |
1647 | } | |
1648 | ||
86a2f789 | 1649 | void |
1650 | ClientHttpRequest::storeEntry(StoreEntry *newEntry) | |
1651 | { | |
1652 | entry_ = newEntry; | |
1653 | } | |
1654 | ||
0976f8db | 1655 | void |
1656 | ClientHttpRequest::loggingEntry(StoreEntry *newEntry) | |
1657 | { | |
1658 | if (loggingEntry_) | |
97b5e68f | 1659 | loggingEntry_->unlock(); |
0976f8db | 1660 | |
1661 | loggingEntry_ = newEntry; | |
1662 | ||
1663 | if (loggingEntry_) | |
3d0ac046 | 1664 | loggingEntry_->lock(); |
0976f8db | 1665 | } |
86a2f789 | 1666 | |
de31d06f | 1667 | /* |
1668 | * doCallouts() - This function controls the order of "callout" | |
1669 | * executions, including non-blocking access control checks, the | |
1670 | * redirector, and ICAP. Previously, these callouts were chained | |
1671 | * together such that "clientAccessCheckDone()" would call | |
1672 | * "clientRedirectStart()" and so on. | |
1673 | * | |
1674 | * The ClientRequestContext (aka calloutContext) class holds certain | |
1675 | * state data for the callout/callback operations. Previously | |
1676 | * ClientHttpRequest would sort of hand off control to ClientRequestContext | |
1677 | * for a short time. ClientRequestContext would then delete itself | |
1678 | * and pass control back to ClientHttpRequest when all callouts | |
1679 | * were finished. | |
1680 | * | |
1681 | * This caused some problems for ICAP because we want to make the | |
1682 | * ICAP callout after checking ACLs, but before checking the no_cache | |
1683 | * list. We can't stuff the ICAP state into the ClientRequestContext | |
1684 | * class because we still need the ICAP state after ClientRequestContext | |
1685 | * goes away. | |
1686 | * | |
1687 | * Note that ClientRequestContext is created before the first call | |
1688 | * to doCallouts(). | |
1689 | * | |
1690 | * If one of the callouts notices that ClientHttpRequest is no | |
1691 | * longer valid, it should call cbdataReferenceDone() so that | |
1692 | * ClientHttpRequest's reference count goes to zero and it will get | |
1693 | * deleted. ClientHttpRequest will then delete ClientRequestContext. | |
1694 | * | |
1695 | * Note that we set the _done flags here before actually starting | |
1696 | * the callout. This is strictly for convenience. | |
1697 | */ | |
1698 | ||
82afb125 FC |
1699 | tos_t aclMapTOS (acl_tos * head, ACLChecklist * ch); |
1700 | nfmark_t aclMapNfmark (acl_nfmark * head, ACLChecklist * ch); | |
057f5854 | 1701 | |
de31d06f | 1702 | void |
1703 | ClientHttpRequest::doCallouts() | |
1704 | { | |
1705 | assert(calloutContext); | |
1706 | ||
6fca33e0 | 1707 | /*Save the original request for logging purposes*/ |
b248c2a3 AJ |
1708 | if (!calloutContext->http->al->request) { |
1709 | calloutContext->http->al->request = request; | |
1710 | HTTPMSGLOCK(calloutContext->http->al->request); | |
1711 | } | |
6fca33e0 | 1712 | |
38450a50 | 1713 | if (!calloutContext->error) { |
87f237a9 | 1714 | // CVE-2009-0801: verify the Host: header is consistent with other known details. |
38450a50 CT |
1715 | if (!calloutContext->host_header_verify_done) { |
1716 | debugs(83, 3, HERE << "Doing calloutContext->hostHeaderVerify()"); | |
1717 | calloutContext->host_header_verify_done = true; | |
1718 | calloutContext->hostHeaderVerify(); | |
1719 | return; | |
1720 | } | |
fe97983f | 1721 | |
38450a50 CT |
1722 | if (!calloutContext->http_access_done) { |
1723 | debugs(83, 3, HERE << "Doing calloutContext->clientAccessCheck()"); | |
1724 | calloutContext->http_access_done = true; | |
1725 | calloutContext->clientAccessCheck(); | |
1726 | return; | |
1727 | } | |
de31d06f | 1728 | |
a83c6ed6 | 1729 | #if USE_ADAPTATION |
38450a50 CT |
1730 | if (!calloutContext->adaptation_acl_check_done) { |
1731 | calloutContext->adaptation_acl_check_done = true; | |
1732 | if (Adaptation::AccessCheck::Start( | |
87f237a9 A |
1733 | Adaptation::methodReqmod, Adaptation::pointPreCache, |
1734 | request, NULL, this)) | |
38450a50 CT |
1735 | return; // will call callback |
1736 | } | |
de31d06f | 1737 | #endif |
1738 | ||
38450a50 CT |
1739 | if (!calloutContext->redirect_done) { |
1740 | calloutContext->redirect_done = true; | |
1741 | assert(calloutContext->redirect_state == REDIRECT_NONE); | |
de31d06f | 1742 | |
38450a50 CT |
1743 | if (Config.Program.redirect) { |
1744 | debugs(83, 3, HERE << "Doing calloutContext->clientRedirectStart()"); | |
1745 | calloutContext->redirect_state = REDIRECT_PENDING; | |
1746 | calloutContext->clientRedirectStart(); | |
1747 | return; | |
1748 | } | |
de31d06f | 1749 | } |
de31d06f | 1750 | |
38450a50 CT |
1751 | if (!calloutContext->adapted_http_access_done) { |
1752 | debugs(83, 3, HERE << "Doing calloutContext->clientAccessCheck2()"); | |
1753 | calloutContext->adapted_http_access_done = true; | |
1754 | calloutContext->clientAccessCheck2(); | |
1755 | return; | |
1756 | } | |
533493da | 1757 | |
a8a0b1c2 EC |
1758 | if (!calloutContext->store_id_done) { |
1759 | calloutContext->store_id_done = true; | |
1760 | assert(calloutContext->store_id_state == REDIRECT_NONE); | |
1761 | ||
1762 | if (Config.Program.store_id) { | |
1763 | debugs(83, 3,"Doing calloutContext->clientStoreIdStart()"); | |
1764 | calloutContext->store_id_state = REDIRECT_PENDING; | |
1765 | calloutContext->clientStoreIdStart(); | |
1766 | return; | |
1767 | } | |
1768 | } | |
1769 | ||
38450a50 CT |
1770 | if (!calloutContext->interpreted_req_hdrs) { |
1771 | debugs(83, 3, HERE << "Doing clientInterpretRequestHeaders()"); | |
1772 | calloutContext->interpreted_req_hdrs = 1; | |
1773 | clientInterpretRequestHeaders(this); | |
1774 | } | |
57abaac0 | 1775 | |
38450a50 CT |
1776 | if (!calloutContext->no_cache_done) { |
1777 | calloutContext->no_cache_done = true; | |
de31d06f | 1778 | |
45e5102d | 1779 | if (Config.accessList.noCache && request->flags.cachable) { |
38450a50 CT |
1780 | debugs(83, 3, HERE << "Doing calloutContext->checkNoCache()"); |
1781 | calloutContext->checkNoCache(); | |
1782 | return; | |
1783 | } | |
de31d06f | 1784 | } |
38450a50 | 1785 | } // if !calloutContext->error |
de31d06f | 1786 | |
425de4c8 AJ |
1787 | if (!calloutContext->tosToClientDone) { |
1788 | calloutContext->tosToClientDone = true; | |
73c36fd9 | 1789 | if (getConn() != NULL && Comm::IsConnOpen(getConn()->clientConnection)) { |
c0941a6a | 1790 | ACLFilledChecklist ch(NULL, request, NULL); |
057f5854 | 1791 | ch.src_addr = request->client_addr; |
1792 | ch.my_addr = request->my_addr; | |
425de4c8 | 1793 | tos_t tos = aclMapTOS(Ip::Qos::TheConfig.tosToClient, &ch); |
3712be3f | 1794 | if (tos) |
73c36fd9 | 1795 | Ip::Qos::setSockTos(getConn()->clientConnection, tos); |
425de4c8 AJ |
1796 | } |
1797 | } | |
1798 | ||
1799 | if (!calloutContext->nfmarkToClientDone) { | |
1800 | calloutContext->nfmarkToClientDone = true; | |
73c36fd9 | 1801 | if (getConn() != NULL && Comm::IsConnOpen(getConn()->clientConnection)) { |
425de4c8 AJ |
1802 | ACLFilledChecklist ch(NULL, request, NULL); |
1803 | ch.src_addr = request->client_addr; | |
1804 | ch.my_addr = request->my_addr; | |
1805 | nfmark_t mark = aclMapNfmark(Ip::Qos::TheConfig.nfmarkToClient, &ch); | |
1806 | if (mark) | |
73c36fd9 | 1807 | Ip::Qos::setSockNfmark(getConn()->clientConnection, mark); |
3712be3f | 1808 | } |
057f5854 | 1809 | } |
1810 | ||
d2565320 | 1811 | #if USE_SSL |
7a957a93 AR |
1812 | // We need to check for SslBump even if the calloutContext->error is set |
1813 | // because bumping may require delaying the error until after CONNECT. | |
e0c0d54c CT |
1814 | if (!calloutContext->sslBumpCheckDone) { |
1815 | calloutContext->sslBumpCheckDone = true; | |
1816 | if (calloutContext->sslBumpAccessCheck()) | |
1817 | return; | |
1818 | /* else no ssl bump required*/ | |
1819 | } | |
d2565320 | 1820 | #endif |
e0c0d54c | 1821 | |
2bd84e5f | 1822 | if (calloutContext->error) { |
a8a0b1c2 EC |
1823 | const char *storeUri = request->storeId(); |
1824 | StoreEntry *e= storeCreateEntry(storeUri, storeUri, request->flags, request->method); | |
2bd84e5f | 1825 | #if USE_SSL |
08097970 | 1826 | if (sslBumpNeeded()) { |
2bd84e5f CT |
1827 | // set final error but delay sending until we bump |
1828 | Ssl::ServerBump *srvBump = new Ssl::ServerBump(request, e); | |
1829 | errorAppendEntry(e, calloutContext->error); | |
1830 | calloutContext->error = NULL; | |
1831 | getConn()->setServerBump(srvBump); | |
1832 | e->unlock(); | |
87f237a9 | 1833 | } else |
2bd84e5f CT |
1834 | #endif |
1835 | { | |
7a957a93 | 1836 | // send the error to the client now |
2bd84e5f CT |
1837 | clientStreamNode *node = (clientStreamNode *)client_stream.tail->prev->data; |
1838 | clientReplyContext *repContext = dynamic_cast<clientReplyContext *>(node->data.getRaw()); | |
1839 | assert (repContext); | |
1840 | repContext->setReplyToStoreEntry(e); | |
1841 | errorAppendEntry(e, calloutContext->error); | |
1842 | calloutContext->error = NULL; | |
1843 | if (calloutContext->readNextRequest) | |
1844 | getConn()->flags.readMore = true; // resume any pipeline reads. | |
1845 | node = (clientStreamNode *)client_stream.tail->data; | |
1846 | clientStreamRead(node, this, node->readBuffer); | |
1847 | e->unlock(); | |
2bd84e5f CT |
1848 | return; |
1849 | } | |
1850 | } | |
1851 | ||
de31d06f | 1852 | cbdataReferenceDone(calloutContext->http); |
1853 | delete calloutContext; | |
1854 | calloutContext = NULL; | |
de31d06f | 1855 | #if HEADERS_LOG |
1856 | ||
1857 | headersLog(0, 1, request->method, request); | |
1858 | #endif | |
1859 | ||
58d7150d | 1860 | debugs(83, 3, HERE << "calling processRequest()"); |
de31d06f | 1861 | processRequest(); |
3ff65596 AR |
1862 | |
1863 | #if ICAP_CLIENT | |
1864 | Adaptation::Icap::History::Pointer ih = request->icapHistory(); | |
1865 | if (ih != NULL) | |
1866 | ih->logType = logType; | |
1867 | #endif | |
de31d06f | 1868 | } |
1869 | ||
32d002cb | 1870 | #if !_USE_INLINE_ |
86a2f789 | 1871 | #include "client_side_request.cci" |
1872 | #endif | |
de31d06f | 1873 | |
a83c6ed6 | 1874 | #if USE_ADAPTATION |
a22e6cd3 AR |
1875 | /// Initiate an asynchronous adaptation transaction which will call us back. |
1876 | void | |
1877 | ClientHttpRequest::startAdaptation(const Adaptation::ServiceGroupPointer &g) | |
3b299123 | 1878 | { |
a22e6cd3 | 1879 | debugs(85, 3, HERE << "adaptation needed for " << this); |
a83c6ed6 AR |
1880 | assert(!virginHeadSource); |
1881 | assert(!adaptedBodySource); | |
a22e6cd3 | 1882 | virginHeadSource = initiateAdaptation( |
4cb2536f | 1883 | new Adaptation::Iterator(request, NULL, g)); |
a83c6ed6 | 1884 | |
e1381638 | 1885 | // we could try to guess whether we can bypass this adaptation |
a22e6cd3 | 1886 | // initiation failure, but it should not really happen |
4299f876 | 1887 | Must(initiated(virginHeadSource)); |
de31d06f | 1888 | } |
1889 | ||
1890 | void | |
3af10ac0 | 1891 | ClientHttpRequest::noteAdaptationAnswer(const Adaptation::Answer &answer) |
de31d06f | 1892 | { |
de31d06f | 1893 | assert(cbdataReferenceValid(this)); // indicates bug |
3af10ac0 AR |
1894 | clearAdaptation(virginHeadSource); |
1895 | assert(!adaptedBodySource); | |
1896 | ||
1897 | switch (answer.kind) { | |
1898 | case Adaptation::Answer::akForward: | |
b248c2a3 | 1899 | handleAdaptedHeader(const_cast<HttpMsg*>(answer.message.getRaw())); |
3af10ac0 AR |
1900 | break; |
1901 | ||
1902 | case Adaptation::Answer::akBlock: | |
1903 | handleAdaptationBlock(answer); | |
1904 | break; | |
1905 | ||
1906 | case Adaptation::Answer::akError: | |
1907 | handleAdaptationFailure(ERR_DETAIL_CLT_REQMOD_ABORT, !answer.final); | |
1908 | break; | |
1909 | } | |
1910 | } | |
1911 | ||
1912 | void | |
ec4d1a1d | 1913 | ClientHttpRequest::handleAdaptedHeader(HttpMsg *msg) |
3af10ac0 | 1914 | { |
5f8252d2 | 1915 | assert(msg); |
1916 | ||
b044675d | 1917 | if (HttpRequest *new_req = dynamic_cast<HttpRequest*>(msg)) { |
200ac359 | 1918 | /* |
5f8252d2 | 1919 | * Replace the old request with the new request. |
200ac359 | 1920 | */ |
6dd9f4bd | 1921 | HTTPMSGUNLOCK(request); |
b248c2a3 AJ |
1922 | request = new_req; |
1923 | HTTPMSGLOCK(request); | |
200ac359 | 1924 | /* |
1925 | * Store the new URI for logging | |
1926 | */ | |
1927 | xfree(uri); | |
1928 | uri = xstrdup(urlCanonical(request)); | |
1929 | setLogUri(this, urlCanonicalClean(request)); | |
914b89a2 | 1930 | assert(request->method.id()); |
b044675d | 1931 | } else if (HttpReply *new_rep = dynamic_cast<HttpReply*>(msg)) { |
1932 | debugs(85,3,HERE << "REQMOD reply is HTTP reply"); | |
1933 | ||
5f8252d2 | 1934 | // subscribe to receive reply body |
1935 | if (new_rep->body_pipe != NULL) { | |
a83c6ed6 | 1936 | adaptedBodySource = new_rep->body_pipe; |
d222a56c HN |
1937 | int consumer_ok = adaptedBodySource->setConsumerIfNotLate(this); |
1938 | assert(consumer_ok); | |
5f8252d2 | 1939 | } |
1940 | ||
b044675d | 1941 | clientStreamNode *node = (clientStreamNode *)client_stream.tail->prev->data; |
1942 | clientReplyContext *repContext = dynamic_cast<clientReplyContext *>(node->data.getRaw()); | |
ea25a575 | 1943 | assert(repContext); |
b044675d | 1944 | repContext->createStoreEntry(request->method, request->flags); |
1945 | ||
1946 | EBIT_CLR(storeEntry()->flags, ENTRY_FWD_HDR_WAIT); | |
1947 | request_satisfaction_mode = true; | |
1948 | request_satisfaction_offset = 0; | |
1949 | storeEntry()->replaceHttpReply(new_rep); | |
97ae5196 | 1950 | storeEntry()->timestampsSet(); |
cb4c4288 | 1951 | |
a83c6ed6 | 1952 | if (!adaptedBodySource) // no body |
cb4c4288 | 1953 | storeEntry()->complete(); |
b044675d | 1954 | clientGetMoreData(node, this); |
200ac359 | 1955 | } |
de31d06f | 1956 | |
5f8252d2 | 1957 | // we are done with getting headers (but may be receiving body) |
a83c6ed6 | 1958 | clearAdaptation(virginHeadSource); |
5f8252d2 | 1959 | |
b044675d | 1960 | if (!request_satisfaction_mode) |
1961 | doCallouts(); | |
de31d06f | 1962 | } |
1963 | ||
1964 | void | |
3af10ac0 | 1965 | ClientHttpRequest::handleAdaptationBlock(const Adaptation::Answer &answer) |
de31d06f | 1966 | { |
3af10ac0 AR |
1967 | request->detailError(ERR_ACCESS_DENIED, ERR_DETAIL_REQMOD_BLOCK); |
1968 | AclMatchedName = answer.ruleId.termedBuf(); | |
1969 | assert(calloutContext); | |
1970 | calloutContext->clientAccessCheckDone(ACCESS_DENIED); | |
1971 | AclMatchedName = NULL; | |
de31d06f | 1972 | } |
1973 | ||
0ad2b63b CT |
1974 | void |
1975 | ClientHttpRequest::resumeBodyStorage() | |
1976 | { | |
e83cdc25 | 1977 | if (!adaptedBodySource) |
0ad2b63b CT |
1978 | return; |
1979 | ||
1980 | noteMoreBodyDataAvailable(adaptedBodySource); | |
1981 | } | |
1982 | ||
de31d06f | 1983 | void |
1cf238db | 1984 | ClientHttpRequest::noteMoreBodyDataAvailable(BodyPipe::Pointer) |
de31d06f | 1985 | { |
5f8252d2 | 1986 | assert(request_satisfaction_mode); |
a83c6ed6 | 1987 | assert(adaptedBodySource != NULL); |
5f8252d2 | 1988 | |
0ad2b63b | 1989 | if (size_t contentSize = adaptedBodySource->buf().contentSize()) { |
4dc2b072 | 1990 | const size_t spaceAvailable = storeEntry()->bytesWanted(Range<size_t>(0,contentSize)); |
0ad2b63b CT |
1991 | |
1992 | if (spaceAvailable < contentSize ) { | |
1993 | // No or partial body data consuming | |
1994 | typedef NullaryMemFunT<ClientHttpRequest> Dialer; | |
1995 | AsyncCall::Pointer call = asyncCall(93, 5, "ClientHttpRequest::resumeBodyStorage", | |
1996 | Dialer(this, &ClientHttpRequest::resumeBodyStorage)); | |
1997 | storeEntry()->deferProducer(call); | |
1998 | } | |
1999 | ||
4dc2b072 | 2000 | if (!spaceAvailable) |
0ad2b63b CT |
2001 | return; |
2002 | ||
2003 | if (spaceAvailable < contentSize ) | |
2004 | contentSize = spaceAvailable; | |
2005 | ||
a83c6ed6 | 2006 | BodyPipeCheckout bpc(*adaptedBodySource); |
0ad2b63b | 2007 | const StoreIOBuffer ioBuf(&bpc.buf, request_satisfaction_offset, contentSize); |
5f8252d2 | 2008 | storeEntry()->write(ioBuf); |
0ad2b63b CT |
2009 | // assume StoreEntry::write() writes the entire ioBuf |
2010 | request_satisfaction_offset += ioBuf.length; | |
4ce0e99b | 2011 | bpc.buf.consume(contentSize); |
5f8252d2 | 2012 | bpc.checkIn(); |
2013 | } | |
2014 | ||
a83c6ed6 | 2015 | if (adaptedBodySource->exhausted()) |
5f8252d2 | 2016 | endRequestSatisfaction(); |
2017 | // else wait for more body data | |
de31d06f | 2018 | } |
2019 | ||
2020 | void | |
1cf238db | 2021 | ClientHttpRequest::noteBodyProductionEnded(BodyPipe::Pointer) |
de31d06f | 2022 | { |
a83c6ed6 | 2023 | assert(!virginHeadSource); |
0ad2b63b CT |
2024 | // should we end request satisfaction now? |
2025 | if (adaptedBodySource != NULL && adaptedBodySource->exhausted()) | |
5f8252d2 | 2026 | endRequestSatisfaction(); |
5f8252d2 | 2027 | } |
3b299123 | 2028 | |
5f8252d2 | 2029 | void |
26ac0430 AJ |
2030 | ClientHttpRequest::endRequestSatisfaction() |
2031 | { | |
5f8252d2 | 2032 | debugs(85,4, HERE << this << " ends request satisfaction"); |
2033 | assert(request_satisfaction_mode); | |
a83c6ed6 | 2034 | stopConsumingFrom(adaptedBodySource); |
3b299123 | 2035 | |
5f8252d2 | 2036 | // TODO: anything else needed to end store entry formation correctly? |
2037 | storeEntry()->complete(); | |
2038 | } | |
de31d06f | 2039 | |
5f8252d2 | 2040 | void |
1cf238db | 2041 | ClientHttpRequest::noteBodyProducerAborted(BodyPipe::Pointer) |
5f8252d2 | 2042 | { |
a83c6ed6 AR |
2043 | assert(!virginHeadSource); |
2044 | stopConsumingFrom(adaptedBodySource); | |
eae3a9a6 AR |
2045 | |
2046 | debugs(85,3, HERE << "REQMOD body production failed"); | |
2047 | if (request_satisfaction_mode) { // too late to recover or serve an error | |
2048 | request->detailError(ERR_ICAP_FAILURE, ERR_DETAIL_CLT_REQMOD_RESP_BODY); | |
73c36fd9 | 2049 | const Comm::ConnectionPointer c = getConn()->clientConnection; |
e7cea0ed AJ |
2050 | Must(Comm::IsConnOpen(c)); |
2051 | c->close(); // drastic, but we may be writing a response already | |
eae3a9a6 AR |
2052 | } else { |
2053 | handleAdaptationFailure(ERR_DETAIL_CLT_REQMOD_REQ_BODY); | |
2054 | } | |
5f8252d2 | 2055 | } |
3b299123 | 2056 | |
5f8252d2 | 2057 | void |
64b66b76 | 2058 | ClientHttpRequest::handleAdaptationFailure(int errDetail, bool bypassable) |
5f8252d2 | 2059 | { |
a83c6ed6 | 2060 | debugs(85,3, HERE << "handleAdaptationFailure(" << bypassable << ")"); |
3b299123 | 2061 | |
5f8252d2 | 2062 | const bool usedStore = storeEntry() && !storeEntry()->isEmpty(); |
2063 | const bool usedPipe = request->body_pipe != NULL && | |
26ac0430 | 2064 | request->body_pipe->consumedSize() > 0; |
3b299123 | 2065 | |
9d4d7c5e | 2066 | if (bypassable && !usedStore && !usedPipe) { |
2067 | debugs(85,3, HERE << "ICAP REQMOD callout failed, bypassing: " << calloutContext); | |
5f8252d2 | 2068 | if (calloutContext) |
2069 | doCallouts(); | |
2070 | return; | |
2071 | } | |
3b299123 | 2072 | |
5f8252d2 | 2073 | debugs(85,3, HERE << "ICAP REQMOD callout failed, responding with error"); |
3b299123 | 2074 | |
5f8252d2 | 2075 | clientStreamNode *node = (clientStreamNode *)client_stream.tail->prev->data; |
2076 | clientReplyContext *repContext = dynamic_cast<clientReplyContext *>(node->data.getRaw()); | |
2077 | assert(repContext); | |
de31d06f | 2078 | |
26ac0430 | 2079 | // The original author of the code also wanted to pass an errno to |
5f8252d2 | 2080 | // setReplyToError, but it seems unlikely that the errno reflects the |
2081 | // true cause of the error at this point, so I did not pass it. | |
2bd84e5f CT |
2082 | if (calloutContext) { |
2083 | Ip::Address noAddr; | |
2084 | noAddr.SetNoAddr(); | |
2085 | ConnStateData * c = getConn(); | |
955394ce | 2086 | calloutContext->error = clientBuildError(ERR_ICAP_FAILURE, Http::scInternalServerError, |
87f237a9 A |
2087 | NULL, |
2088 | c != NULL ? c->clientConnection->remote : noAddr, | |
2089 | request | |
2090 | ); | |
79fc6915 | 2091 | #if USE_AUTH |
87f237a9 | 2092 | calloutContext->error->auth_user_request = |
2bd84e5f | 2093 | c != NULL && c->auth_user_request != NULL ? c->auth_user_request : request->auth_user_request; |
79fc6915 | 2094 | #endif |
129fe2a1 | 2095 | calloutContext->error->detailError(errDetail); |
2bd84e5f | 2096 | calloutContext->readNextRequest = true; |
7830d88a FC |
2097 | if (c != NULL) |
2098 | c->expectNoForwarding(); | |
2bd84e5f CT |
2099 | doCallouts(); |
2100 | } | |
2101 | //else if(calloutContext == NULL) is it possible? | |
de31d06f | 2102 | } |
2103 | ||
2104 | #endif |