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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" |
5c0c642e | 60 | #include "http.h" |
ce394734 | 61 | #include "HttpHdrCc.h" |
27bc2077 AJ |
62 | #include "HttpReply.h" |
63 | #include "HttpRequest.h" | |
582c2af2 | 64 | #include "ipcache.h" |
425de4c8 | 65 | #include "ip/QosConfig.h" |
1c7ae5ff | 66 | #include "log/access_log.h" |
27bc2077 | 67 | #include "MemObject.h" |
8a01b99e | 68 | #include "Parsing.h" |
582c2af2 | 69 | #include "profiler/Profiler.h" |
4d5904f7 | 70 | #include "SquidConfig.h" |
27bc2077 | 71 | #include "SquidTime.h" |
582c2af2 | 72 | #include "Store.h" |
28204b3b | 73 | #include "StrList.h" |
685c6ff5 | 74 | #include "tools.h" |
b1bd952a | 75 | #include "URL.h" |
27bc2077 | 76 | #include "wordlist.h" |
582c2af2 FC |
77 | #if USE_AUTH |
78 | #include "auth/UserRequest.h" | |
79 | #endif | |
80 | #if USE_ADAPTATION | |
81 | #include "adaptation/AccessCheck.h" | |
82 | #include "adaptation/Answer.h" | |
83 | #include "adaptation/Iterator.h" | |
84 | #include "adaptation/Service.h" | |
85 | #if ICAP_CLIENT | |
86 | #include "adaptation/icap/History.h" | |
87 | #endif | |
88 | #endif | |
4db984be CT |
89 | #if USE_SSL |
90 | #include "ssl/support.h" | |
2bd84e5f | 91 | #include "ssl/ServerBump.h" |
4db984be | 92 | #endif |
3ff65596 | 93 | |
edce4d98 | 94 | #if LINGERING_CLOSE |
95 | #define comm_close comm_lingering_close | |
96 | #endif | |
97 | ||
98 | static const char *const crlf = "\r\n"; | |
99 | ||
609c620a | 100 | #if FOLLOW_X_FORWARDED_FOR |
2efeb0b7 | 101 | static void clientFollowXForwardedForCheck(allow_t answer, void *data); |
609c620a | 102 | #endif /* FOLLOW_X_FORWARDED_FOR */ |
3d674977 | 103 | |
82afb125 | 104 | ErrorState *clientBuildError(err_type, http_status, char const *url, Ip::Address &, HttpRequest *); |
2bd84e5f | 105 | |
8e2745f4 | 106 | CBDATA_CLASS_INIT(ClientRequestContext); |
107 | ||
108 | void * | |
109 | ClientRequestContext::operator new (size_t size) | |
110 | { | |
111 | assert (size == sizeof(ClientRequestContext)); | |
112 | CBDATA_INIT_TYPE(ClientRequestContext); | |
113 | ClientRequestContext *result = cbdataAlloc(ClientRequestContext); | |
aa625860 | 114 | return result; |
8e2745f4 | 115 | } |
62e76326 | 116 | |
8e2745f4 | 117 | void |
118 | ClientRequestContext::operator delete (void *address) | |
119 | { | |
120 | ClientRequestContext *t = static_cast<ClientRequestContext *>(address); | |
aa625860 | 121 | cbdataFree(t); |
8e2745f4 | 122 | } |
123 | ||
edce4d98 | 124 | /* Local functions */ |
edce4d98 | 125 | /* other */ |
2efeb0b7 | 126 | static void clientAccessCheckDoneWrapper(allow_t, void *); |
e0c0d54c | 127 | #if USE_SSL |
2efeb0b7 | 128 | static void sslBumpAccessCheckDoneWrapper(allow_t, void *); |
e0c0d54c | 129 | #endif |
59a1efb2 | 130 | static int clientHierarchical(ClientHttpRequest * http); |
131 | static void clientInterpretRequestHeaders(ClientHttpRequest * http); | |
de31d06f | 132 | static RH clientRedirectDoneWrapper; |
2efeb0b7 | 133 | static void checkNoCacheDoneWrapper(allow_t, void *); |
82afb125 FC |
134 | SQUIDCEXTERN CSR clientGetMoreData; |
135 | SQUIDCEXTERN CSS clientReplyStatus; | |
136 | SQUIDCEXTERN CSD clientReplyDetach; | |
528b2c61 | 137 | static void checkFailureRatio(err_type, hier_code); |
edce4d98 | 138 | |
8e2745f4 | 139 | ClientRequestContext::~ClientRequestContext() |
140 | { | |
de31d06f | 141 | /* |
a546b04b | 142 | * Release our "lock" on our parent, ClientHttpRequest, if we |
143 | * still have one | |
de31d06f | 144 | */ |
a546b04b | 145 | |
146 | if (http) | |
147 | cbdataReferenceDone(http); | |
62e76326 | 148 | |
2bd84e5f | 149 | delete error; |
5f8252d2 | 150 | debugs(85,3, HERE << this << " ClientRequestContext destructed"); |
8e2745f4 | 151 | } |
152 | ||
2bd84e5f | 153 | ClientRequestContext::ClientRequestContext(ClientHttpRequest *anHttp) : http(cbdataReference(anHttp)), acl_checklist (NULL), redirect_state (REDIRECT_NONE), error(NULL), readNextRequest(false) |
edce4d98 | 154 | { |
57abaac0 | 155 | http_access_done = false; |
156 | redirect_done = false; | |
157 | no_cache_done = false; | |
158 | interpreted_req_hdrs = false; | |
e0c0d54c CT |
159 | #if USE_SSL |
160 | sslBumpCheckDone = false; | |
161 | #endif | |
0b86805b | 162 | debugs(85,3, HERE << this << " ClientRequestContext constructed"); |
edce4d98 | 163 | } |
164 | ||
528b2c61 | 165 | CBDATA_CLASS_INIT(ClientHttpRequest); |
8e2745f4 | 166 | |
528b2c61 | 167 | void * |
168 | ClientHttpRequest::operator new (size_t size) | |
169 | { | |
170 | assert (size == sizeof (ClientHttpRequest)); | |
171 | CBDATA_INIT_TYPE(ClientHttpRequest); | |
172 | ClientHttpRequest *result = cbdataAlloc(ClientHttpRequest); | |
aa625860 | 173 | return result; |
528b2c61 | 174 | } |
175 | ||
62e76326 | 176 | void |
528b2c61 | 177 | ClientHttpRequest::operator delete (void *address) |
178 | { | |
aa625860 | 179 | ClientHttpRequest *t = static_cast<ClientHttpRequest *>(address); |
180 | cbdataFree(t); | |
528b2c61 | 181 | } |
182 | ||
26ac0430 | 183 | ClientHttpRequest::ClientHttpRequest(ConnStateData * aConn) : |
a83c6ed6 | 184 | #if USE_ADAPTATION |
26ac0430 | 185 | AsyncJob("ClientHttpRequest"), |
1cf238db | 186 | #endif |
26ac0430 | 187 | loggingEntry_(NULL) |
528b2c61 | 188 | { |
1cf238db | 189 | start_time = current_time; |
a0355e95 | 190 | setConn(aConn); |
41ebd397 CT |
191 | al = new AccessLogEntry; |
192 | al->tcpClient = clientConnection = aConn->clientConnection; | |
f4698e0b CT |
193 | #if USE_SSL |
194 | if (aConn->clientConnection != NULL && aConn->clientConnection->isOpen()) { | |
195 | if (SSL *ssl = fd_table[aConn->clientConnection->fd].ssl) | |
196 | al->cache.sslClientCert.reset(SSL_get_peer_certificate(ssl)); | |
197 | } | |
198 | #endif | |
a0355e95 | 199 | dlinkAdd(this, &active, &ClientActiveRequests); |
a83c6ed6 | 200 | #if USE_ADAPTATION |
b044675d | 201 | request_satisfaction_mode = false; |
202 | #endif | |
e0c0d54c | 203 | #if USE_SSL |
08097970 | 204 | sslBumpNeed_ = Ssl::bumpEnd; |
e0c0d54c | 205 | #endif |
528b2c61 | 206 | } |
207 | ||
0655fa4d | 208 | /* |
209 | * returns true if client specified that the object must come from the cache | |
210 | * without contacting origin server | |
211 | */ | |
212 | bool | |
213 | ClientHttpRequest::onlyIfCached()const | |
214 | { | |
215 | assert(request); | |
216 | return request->cache_control && | |
4ce6e3b5 | 217 | request->cache_control->onlyIfCached(); |
0655fa4d | 218 | } |
219 | ||
77aacca5 | 220 | /** |
528b2c61 | 221 | * This function is designed to serve a fairly specific purpose. |
222 | * Occasionally our vBNS-connected caches can talk to each other, but not | |
223 | * the rest of the world. Here we try to detect frequent failures which | |
224 | * make the cache unusable (e.g. DNS lookup and connect() failures). If | |
225 | * the failure:success ratio goes above 1.0 then we go into "hit only" | |
226 | * mode where we only return UDP_HIT or UDP_MISS_NOFETCH. Neighbors | |
227 | * will only fetch HITs from us if they are using the ICP protocol. We | |
228 | * stay in this mode for 5 minutes. | |
26ac0430 | 229 | * |
528b2c61 | 230 | * Duane W., Sept 16, 1996 |
231 | */ | |
528b2c61 | 232 | static void |
233 | checkFailureRatio(err_type etype, hier_code hcode) | |
234 | { | |
77aacca5 AJ |
235 | // Can be set at compile time with -D compiler flag |
236 | #ifndef FAILURE_MODE_TIME | |
237 | #define FAILURE_MODE_TIME 300 | |
238 | #endif | |
239 | ||
8d74a311 AJ |
240 | if (hcode == HIER_NONE) |
241 | return; | |
242 | ||
243 | // don't bother when ICP is disabled. | |
244 | if (Config.Port.icp <= 0) | |
245 | return; | |
246 | ||
528b2c61 | 247 | static double magic_factor = 100.0; |
248 | double n_good; | |
249 | double n_bad; | |
62e76326 | 250 | |
528b2c61 | 251 | n_good = magic_factor / (1.0 + request_failure_ratio); |
62e76326 | 252 | |
528b2c61 | 253 | n_bad = magic_factor - n_good; |
62e76326 | 254 | |
528b2c61 | 255 | switch (etype) { |
62e76326 | 256 | |
528b2c61 | 257 | case ERR_DNS_FAIL: |
62e76326 | 258 | |
528b2c61 | 259 | case ERR_CONNECT_FAIL: |
3712be3f | 260 | case ERR_SECURE_CONNECT_FAIL: |
62e76326 | 261 | |
528b2c61 | 262 | case ERR_READ_ERROR: |
5086523e | 263 | ++n_bad; |
62e76326 | 264 | break; |
265 | ||
528b2c61 | 266 | default: |
5086523e | 267 | ++n_good; |
528b2c61 | 268 | } |
62e76326 | 269 | |
528b2c61 | 270 | request_failure_ratio = n_bad / n_good; |
62e76326 | 271 | |
528b2c61 | 272 | if (hit_only_mode_until > squid_curtime) |
62e76326 | 273 | return; |
274 | ||
528b2c61 | 275 | if (request_failure_ratio < 1.0) |
62e76326 | 276 | return; |
277 | ||
77aacca5 | 278 | debugs(33, DBG_CRITICAL, "WARNING: Failure Ratio at "<< std::setw(4)<< |
bf8fe701 | 279 | std::setprecision(3) << request_failure_ratio); |
62e76326 | 280 | |
8d74a311 | 281 | debugs(33, DBG_CRITICAL, "WARNING: ICP going into HIT-only mode for " << |
bf8fe701 | 282 | FAILURE_MODE_TIME / 60 << " minutes..."); |
62e76326 | 283 | |
528b2c61 | 284 | hit_only_mode_until = squid_curtime + FAILURE_MODE_TIME; |
62e76326 | 285 | |
528b2c61 | 286 | request_failure_ratio = 0.8; /* reset to something less than 1.0 */ |
287 | } | |
288 | ||
289 | ClientHttpRequest::~ClientHttpRequest() | |
290 | { | |
bf8fe701 | 291 | debugs(33, 3, "httpRequestFree: " << uri); |
72bdee4c | 292 | PROF_start(httpRequestFree); |
62e76326 | 293 | |
5f8252d2 | 294 | // Even though freeResources() below may destroy the request, |
295 | // we no longer set request->body_pipe to NULL here | |
296 | // because we did not initiate that pipe (ConnStateData did) | |
62e76326 | 297 | |
528b2c61 | 298 | /* the ICP check here was erroneous |
26ac0430 | 299 | * - StoreEntry::releaseRequest was always called if entry was valid |
528b2c61 | 300 | */ |
301 | assert(logType < LOG_TYPE_MAX); | |
9ce7856a | 302 | |
528b2c61 | 303 | logRequest(); |
9ce7856a | 304 | |
0976f8db | 305 | loggingEntry(NULL); |
306 | ||
528b2c61 | 307 | if (request) |
41ebd397 | 308 | checkFailureRatio(request->errType, al->hier.code); |
62e76326 | 309 | |
528b2c61 | 310 | freeResources(); |
62e76326 | 311 | |
a83c6ed6 AR |
312 | #if USE_ADAPTATION |
313 | announceInitiatorAbort(virginHeadSource); | |
9d4d7c5e | 314 | |
a83c6ed6 AR |
315 | if (adaptedBodySource != NULL) |
316 | stopConsumingFrom(adaptedBodySource); | |
de31d06f | 317 | #endif |
9ce7856a | 318 | |
de31d06f | 319 | if (calloutContext) |
320 | delete calloutContext; | |
321 | ||
be364179 AJ |
322 | clientConnection = NULL; |
323 | ||
26ac0430 AJ |
324 | if (conn_) |
325 | cbdataReferenceDone(conn_); | |
1cf238db | 326 | |
528b2c61 | 327 | /* moving to the next connection is handled by the context free */ |
328 | dlinkDelete(&active, &ClientActiveRequests); | |
9ce7856a | 329 | |
72bdee4c | 330 | PROF_stop(httpRequestFree); |
528b2c61 | 331 | } |
62e76326 | 332 | |
11992b6f AJ |
333 | /** |
334 | * Create a request and kick it off | |
335 | * | |
336 | * \retval 0 success | |
337 | * \retval -1 failure | |
338 | * | |
69660be0 | 339 | * TODO: Pass in the buffers to be used in the inital Read request, as they are |
340 | * determined by the user | |
edce4d98 | 341 | */ |
11992b6f | 342 | int |
60745f24 | 343 | clientBeginRequest(const HttpRequestMethod& method, char const *url, CSCB * streamcallback, |
0655fa4d | 344 | CSD * streamdetach, ClientStreamData streamdata, HttpHeader const *header, |
62e76326 | 345 | char *tailbuf, size_t taillen) |
edce4d98 | 346 | { |
347 | size_t url_sz; | |
a0355e95 | 348 | ClientHttpRequest *http = new ClientHttpRequest(NULL); |
190154cf | 349 | HttpRequest *request; |
528b2c61 | 350 | StoreIOBuffer tempBuffer; |
1cf238db | 351 | http->start_time = current_time; |
edce4d98 | 352 | /* this is only used to adjust the connection offset in client_side.c */ |
353 | http->req_sz = 0; | |
c8be6d7b | 354 | tempBuffer.length = taillen; |
355 | tempBuffer.data = tailbuf; | |
edce4d98 | 356 | /* client stream setup */ |
357 | clientStreamInit(&http->client_stream, clientGetMoreData, clientReplyDetach, | |
0655fa4d | 358 | clientReplyStatus, new clientReplyContext(http), streamcallback, |
62e76326 | 359 | streamdetach, streamdata, tempBuffer); |
edce4d98 | 360 | /* make it visible in the 'current acctive requests list' */ |
edce4d98 | 361 | /* Set flags */ |
a46d2c0e | 362 | /* internal requests only makes sense in an |
363 | * accelerator today. TODO: accept flags ? */ | |
364 | http->flags.accel = 1; | |
edce4d98 | 365 | /* allow size for url rewriting */ |
366 | url_sz = strlen(url) + Config.appendDomainLen + 5; | |
e6ccf245 | 367 | http->uri = (char *)xcalloc(url_sz, 1); |
edce4d98 | 368 | strcpy(http->uri, url); |
369 | ||
c21ad0f5 | 370 | if ((request = HttpRequest::CreateFromUrlAndMethod(http->uri, method)) == NULL) { |
bf8fe701 | 371 | debugs(85, 5, "Invalid URL: " << http->uri); |
62e76326 | 372 | return -1; |
edce4d98 | 373 | } |
62e76326 | 374 | |
69660be0 | 375 | /* |
11992b6f | 376 | * now update the headers in request with our supplied headers. urlParse |
69660be0 | 377 | * should return a blank header set, but we use Update to be sure of |
378 | * correctness. | |
edce4d98 | 379 | */ |
380 | if (header) | |
a9925b40 | 381 | request->header.update(header, NULL); |
62e76326 | 382 | |
edce4d98 | 383 | http->log_uri = xstrdup(urlCanonicalClean(request)); |
62e76326 | 384 | |
edce4d98 | 385 | /* http struct now ready */ |
386 | ||
69660be0 | 387 | /* |
388 | * build new header list *? TODO | |
edce4d98 | 389 | */ |
45e5102d | 390 | request->flags.accelerated = http->flags.accel; |
62e76326 | 391 | |
450fe1cb | 392 | request->flags.internalClient = 1; |
a46d2c0e | 393 | |
394 | /* this is an internally created | |
395 | * request, not subject to acceleration | |
396 | * target overrides */ | |
69660be0 | 397 | /* |
398 | * FIXME? Do we want to detect and handle internal requests of internal | |
399 | * objects ? | |
400 | */ | |
edce4d98 | 401 | |
402 | /* Internally created requests cannot have bodies today */ | |
403 | request->content_length = 0; | |
62e76326 | 404 | |
cc192b50 | 405 | request->client_addr.SetNoAddr(); |
62e76326 | 406 | |
3d674977 AJ |
407 | #if FOLLOW_X_FORWARDED_FOR |
408 | request->indirect_client_addr.SetNoAddr(); | |
409 | #endif /* FOLLOW_X_FORWARDED_FOR */ | |
26ac0430 | 410 | |
cc192b50 | 411 | request->my_addr.SetNoAddr(); /* undefined for internal requests */ |
62e76326 | 412 | |
cc192b50 | 413 | request->my_addr.SetPort(0); |
62e76326 | 414 | |
3872be7c AJ |
415 | /* Our version is HTTP/1.1 */ |
416 | HttpVersion http_ver(1,1); | |
edce4d98 | 417 | request->http_ver = http_ver; |
62e76326 | 418 | |
6dd9f4bd | 419 | http->request = HTTPMSGLOCK(request); |
edce4d98 | 420 | |
421 | /* optional - skip the access check ? */ | |
de31d06f | 422 | http->calloutContext = new ClientRequestContext(http); |
423 | ||
57abaac0 | 424 | http->calloutContext->http_access_done = false; |
de31d06f | 425 | |
57abaac0 | 426 | http->calloutContext->redirect_done = true; |
de31d06f | 427 | |
57abaac0 | 428 | http->calloutContext->no_cache_done = true; |
de31d06f | 429 | |
430 | http->doCallouts(); | |
62e76326 | 431 | |
edce4d98 | 432 | return 0; |
433 | } | |
434 | ||
de31d06f | 435 | bool |
436 | ClientRequestContext::httpStateIsValid() | |
437 | { | |
438 | ClientHttpRequest *http_ = http; | |
439 | ||
440 | if (cbdataReferenceValid(http_)) | |
441 | return true; | |
442 | ||
443 | http = NULL; | |
444 | ||
445 | cbdataReferenceDone(http_); | |
446 | ||
447 | return false; | |
448 | } | |
449 | ||
3d674977 AJ |
450 | #if FOLLOW_X_FORWARDED_FOR |
451 | /** | |
a9044668 | 452 | * clientFollowXForwardedForCheck() checks the content of X-Forwarded-For: |
3d674977 AJ |
453 | * against the followXFF ACL, or cleans up and passes control to |
454 | * clientAccessCheck(). | |
d096ace1 AJ |
455 | * |
456 | * The trust model here is a little ambiguous. So to clarify the logic: | |
457 | * - we may always use the direct client address as the client IP. | |
a9044668 | 458 | * - these trust tests merey tell whether we trust given IP enough to believe the |
d096ace1 AJ |
459 | * IP string which it appended to the X-Forwarded-For: header. |
460 | * - if at any point we don't trust what an IP adds we stop looking. | |
461 | * - at that point the current contents of indirect_client_addr are the value set | |
462 | * by the last previously trusted IP. | |
463 | * ++ indirect_client_addr contains the remote direct client from the trusted peers viewpoint. | |
3d674977 | 464 | */ |
3d674977 | 465 | static void |
2efeb0b7 | 466 | clientFollowXForwardedForCheck(allow_t answer, void *data) |
3d674977 AJ |
467 | { |
468 | ClientRequestContext *calloutContext = (ClientRequestContext *) data; | |
3d674977 AJ |
469 | |
470 | if (!calloutContext->httpStateIsValid()) | |
471 | return; | |
472 | ||
d096ace1 AJ |
473 | ClientHttpRequest *http = calloutContext->http; |
474 | HttpRequest *request = http->request; | |
475 | ||
3d674977 AJ |
476 | /* |
477 | * answer should be be ACCESS_ALLOWED or ACCESS_DENIED if we are | |
478 | * called as a result of ACL checks, or -1 if we are called when | |
479 | * there's nothing left to do. | |
480 | */ | |
481 | if (answer == ACCESS_ALLOWED && | |
26ac0430 | 482 | request->x_forwarded_for_iterator.size () != 0) { |
d096ace1 | 483 | |
3d674977 | 484 | /* |
d096ace1 AJ |
485 | * Remove the last comma-delimited element from the |
486 | * x_forwarded_for_iterator and use it to repeat the cycle. | |
487 | */ | |
3d674977 AJ |
488 | const char *p; |
489 | const char *asciiaddr; | |
490 | int l; | |
b7ac5457 | 491 | Ip::Address addr; |
bb790702 | 492 | p = request->x_forwarded_for_iterator.termedBuf(); |
3d674977 AJ |
493 | l = request->x_forwarded_for_iterator.size(); |
494 | ||
495 | /* | |
496 | * XXX x_forwarded_for_iterator should really be a list of | |
497 | * IP addresses, but it's a String instead. We have to | |
498 | * walk backwards through the String, biting off the last | |
499 | * comma-delimited part each time. As long as the data is in | |
500 | * a String, we should probably implement and use a variant of | |
501 | * strListGetItem() that walks backwards instead of forwards | |
502 | * through a comma-separated list. But we don't even do that; | |
503 | * we just do the work in-line here. | |
504 | */ | |
505 | /* skip trailing space and commas */ | |
506 | while (l > 0 && (p[l-1] == ',' || xisspace(p[l-1]))) | |
5e263176 | 507 | --l; |
3d674977 AJ |
508 | request->x_forwarded_for_iterator.cut(l); |
509 | /* look for start of last item in list */ | |
510 | while (l > 0 && ! (p[l-1] == ',' || xisspace(p[l-1]))) | |
5e263176 | 511 | --l; |
3d674977 | 512 | asciiaddr = p+l; |
fafd0efa | 513 | if ((addr = asciiaddr)) { |
3d674977 AJ |
514 | request->indirect_client_addr = addr; |
515 | request->x_forwarded_for_iterator.cut(l); | |
d096ace1 AJ |
516 | calloutContext->acl_checklist = clientAclChecklistCreate(Config.accessList.followXFF, http); |
517 | if (!Config.onoff.acl_uses_indirect_client) { | |
518 | /* override the default src_addr tested if we have to go deeper than one level into XFF */ | |
519 | Filled(calloutContext->acl_checklist)->src_addr = request->indirect_client_addr; | |
3d674977 | 520 | } |
d096ace1 | 521 | calloutContext->acl_checklist->nonBlockingCheck(clientFollowXForwardedForCheck, data); |
3d674977 AJ |
522 | return; |
523 | } | |
524 | } /*if (answer == ACCESS_ALLOWED && | |
525 | request->x_forwarded_for_iterator.size () != 0)*/ | |
526 | ||
527 | /* clean up, and pass control to clientAccessCheck */ | |
26ac0430 | 528 | if (Config.onoff.log_uses_indirect_client) { |
3d674977 AJ |
529 | /* |
530 | * Ensure that the access log shows the indirect client | |
531 | * instead of the direct client. | |
532 | */ | |
533 | ConnStateData *conn = http->getConn(); | |
534 | conn->log_addr = request->indirect_client_addr; | |
535 | } | |
536 | request->x_forwarded_for_iterator.clean(); | |
f1a1f20a | 537 | request->flags.done_follow_x_forwarded_for=true; |
3d674977 | 538 | |
d096ace1 AJ |
539 | if (answer != ACCESS_ALLOWED && answer != ACCESS_DENIED) { |
540 | debugs(28, DBG_CRITICAL, "ERROR: Processing X-Forwarded-For. Stopping at IP address: " << request->indirect_client_addr ); | |
493d3865 AJ |
541 | } |
542 | ||
543 | /* process actual access ACL as normal. */ | |
544 | calloutContext->clientAccessCheck(); | |
3d674977 AJ |
545 | } |
546 | #endif /* FOLLOW_X_FORWARDED_FOR */ | |
547 | ||
fe97983f AJ |
548 | static void |
549 | hostHeaderIpVerifyWrapper(const ipcache_addrs* ia, const DnsLookupDetails &dns, void *data) | |
550 | { | |
551 | ClientRequestContext *c = static_cast<ClientRequestContext*>(data); | |
552 | c->hostHeaderIpVerify(ia, dns); | |
553 | } | |
554 | ||
555 | void | |
556 | ClientRequestContext::hostHeaderIpVerify(const ipcache_addrs* ia, const DnsLookupDetails &dns) | |
557 | { | |
558 | Comm::ConnectionPointer clientConn = http->getConn()->clientConnection; | |
559 | ||
560 | // note the DNS details for the transaction stats. | |
561 | http->request->recordLookup(dns); | |
562 | ||
563 | if (ia != NULL && ia->count > 0) { | |
564 | // Is the NAT destination IP in DNS? | |
5086523e | 565 | for (int i = 0; i < ia->count; ++i) { |
fe97983f AJ |
566 | if (clientConn->local.matchIPAddr(ia->in_addrs[i]) == 0) { |
567 | debugs(85, 3, HERE << "validate IP " << clientConn->local << " possible from Host:"); | |
45e5102d | 568 | http->request->flags.hostVerified = 1; |
fe97983f AJ |
569 | http->doCallouts(); |
570 | return; | |
571 | } | |
572 | debugs(85, 3, HERE << "validate IP " << clientConn->local << " non-match from Host: IP " << ia->in_addrs[i]); | |
573 | } | |
574 | } | |
575 | debugs(85, 3, HERE << "FAIL: validate IP " << clientConn->local << " possible from Host:"); | |
05b28f84 | 576 | hostHeaderVerifyFailed("local IP", "any domain IP"); |
fe97983f AJ |
577 | } |
578 | ||
579 | void | |
05b28f84 | 580 | ClientRequestContext::hostHeaderVerifyFailed(const char *A, const char *B) |
fe97983f | 581 | { |
2962f8b8 AJ |
582 | // IP address validation for Host: failed. Admin wants to ignore them. |
583 | // NP: we do not yet handle CONNECT tunnels well, so ignore for them | |
584 | if (!Config.onoff.hostStrictVerify && http->request->method != METHOD_CONNECT) { | |
585 | debugs(85, 3, "SECURITY ALERT: Host header forgery detected on " << http->getConn()->clientConnection << | |
586 | " (" << A << " does not match " << B << ") on URL: " << urlCanonical(http->request)); | |
587 | ||
450fe1cb | 588 | // NP: it is tempting to use 'flags.noCache' but that is all about READing cache data. |
2962f8b8 | 589 | // The problems here are about WRITE for new cache content, which means flags.cachable |
45e5102d | 590 | http->request->flags.cachable = 0; // MUST NOT cache (for now) |
2962f8b8 | 591 | // XXX: when we have updated the cache key to base on raw-IP + URI this cacheable limit can go. |
45e5102d | 592 | http->request->flags.hierarchical = 0; // MUST NOT pass to peers (for now) |
2962f8b8 | 593 | // XXX: when we have sorted out the best way to relay requests properly to peers this hierarchical limit can go. |
567fe088 | 594 | http->doCallouts(); |
2962f8b8 AJ |
595 | return; |
596 | } | |
597 | ||
8f489ad7 AJ |
598 | debugs(85, DBG_IMPORTANT, "SECURITY ALERT: Host header forgery detected on " << |
599 | http->getConn()->clientConnection << " (" << A << " does not match " << B << ")"); | |
600 | debugs(85, DBG_IMPORTANT, "SECURITY ALERT: By user agent: " << http->request->header.getStr(HDR_USER_AGENT)); | |
601 | debugs(85, DBG_IMPORTANT, "SECURITY ALERT: on URL: " << urlCanonical(http->request)); | |
fe97983f AJ |
602 | |
603 | // IP address validation for Host: failed. reject the connection. | |
604 | clientStreamNode *node = (clientStreamNode *)http->client_stream.tail->prev->data; | |
605 | clientReplyContext *repContext = dynamic_cast<clientReplyContext *>(node->data.getRaw()); | |
606 | assert (repContext); | |
2962f8b8 | 607 | repContext->setReplyToError(ERR_CONFLICT_HOST, HTTP_CONFLICT, |
fe97983f AJ |
608 | http->request->method, NULL, |
609 | http->getConn()->clientConnection->remote, | |
610 | http->request, | |
611 | NULL, | |
612 | #if USE_AUTH | |
613 | http->getConn() != NULL && http->getConn()->auth_user_request != NULL ? | |
614 | http->getConn()->auth_user_request : http->request->auth_user_request); | |
615 | #else | |
616 | NULL); | |
617 | #endif | |
618 | node = (clientStreamNode *)http->client_stream.tail->data; | |
619 | clientStreamRead(node, http, node->readBuffer); | |
620 | } | |
621 | ||
622 | void | |
623 | ClientRequestContext::hostHeaderVerify() | |
624 | { | |
625 | // Require a Host: header. | |
626 | const char *host = http->request->header.getStr(HDR_HOST); | |
fe97983f AJ |
627 | |
628 | if (!host) { | |
629 | // TODO: dump out the HTTP/1.1 error about missing host header. | |
630 | // otherwise this is fine, can't forge a header value when its not even set. | |
631 | debugs(85, 3, HERE << "validate skipped with no Host: header present."); | |
632 | http->doCallouts(); | |
633 | return; | |
634 | } | |
635 | ||
45e5102d | 636 | if (http->request->flags.internal) { |
8f489ad7 AJ |
637 | // TODO: kill this when URL handling allows partial URLs out of accel mode |
638 | // and we no longer screw with the URL just to add our internal host there | |
639 | debugs(85, 6, HERE << "validate skipped due to internal composite URL."); | |
640 | http->doCallouts(); | |
641 | return; | |
642 | } | |
643 | ||
fe97983f AJ |
644 | // Locate if there is a port attached, strip ready for IP lookup |
645 | char *portStr = NULL; | |
91663dce AJ |
646 | char *hostB = xstrdup(host); |
647 | host = hostB; | |
fe97983f AJ |
648 | if (host[0] == '[') { |
649 | // IPv6 literal. | |
fe97983f | 650 | portStr = strchr(hostB, ']'); |
91663dce AJ |
651 | if (portStr && *(++portStr) != ':') { |
652 | portStr = NULL; | |
fe97983f | 653 | } |
91663dce | 654 | } else { |
fe97983f | 655 | // Domain or IPv4 literal with port |
fe97983f | 656 | portStr = strrchr(hostB, ':'); |
91663dce AJ |
657 | } |
658 | ||
659 | uint16_t port = 0; | |
660 | if (portStr) { | |
661 | *portStr = '\0'; // strip the ':' | |
662 | if (*(++portStr) != '\0') | |
663 | port = xatoi(portStr); | |
fe97983f AJ |
664 | } |
665 | ||
666 | debugs(85, 3, HERE << "validate host=" << host << ", port=" << port << ", portStr=" << (portStr?portStr:"NULL")); | |
450fe1cb | 667 | if (http->request->flags.intercepted || http->request->flags.spoofClientIp) { |
ba4d9da0 | 668 | // verify the Host: port (if any) matches the apparent destination |
fe97983f | 669 | if (portStr && port != http->getConn()->clientConnection->local.GetPort()) { |
05b28f84 AJ |
670 | debugs(85, 3, HERE << "FAIL on validate port " << http->getConn()->clientConnection->local.GetPort() << |
671 | " matches Host: port " << port << " (" << portStr << ")"); | |
672 | hostHeaderVerifyFailed("intercepted port", portStr); | |
ba4d9da0 AJ |
673 | } else { |
674 | // XXX: match the scheme default port against the apparent destination | |
fe97983f | 675 | |
ba4d9da0 AJ |
676 | // verify the destination DNS is one of the Host: headers IPs |
677 | ipcache_nbgethostbyname(host, hostHeaderIpVerifyWrapper, this); | |
678 | } | |
06059513 | 679 | } else if (!Config.onoff.hostStrictVerify) { |
90529125 AJ |
680 | debugs(85, 3, HERE << "validate skipped."); |
681 | http->doCallouts(); | |
8f489ad7 AJ |
682 | } else if (strlen(host) != strlen(http->request->GetHost())) { |
683 | // Verify forward-proxy requested URL domain matches the Host: header | |
684 | debugs(85, 3, HERE << "FAIL on validate URL domain length " << http->request->GetHost() << " matches Host: " << host); | |
685 | hostHeaderVerifyFailed(host, http->request->GetHost()); | |
686 | } else if (matchDomainName(host, http->request->GetHost()) != 0) { | |
ba4d9da0 | 687 | // Verify forward-proxy requested URL domain matches the Host: header |
fe97983f | 688 | debugs(85, 3, HERE << "FAIL on validate URL domain " << http->request->GetHost() << " matches Host: " << host); |
05b28f84 | 689 | hostHeaderVerifyFailed(host, http->request->GetHost()); |
ba4d9da0 AJ |
690 | } else if (portStr && port != http->request->port) { |
691 | // Verify forward-proxy requested URL domain matches the Host: header | |
692 | debugs(85, 3, HERE << "FAIL on validate URL port " << http->request->port << " matches Host: port " << portStr); | |
693 | hostHeaderVerifyFailed("URL port", portStr); | |
65d2fdbf | 694 | } else if (!portStr && http->request->method != METHOD_CONNECT && http->request->port != urlDefaultPort(http->request->protocol)) { |
ba4d9da0 | 695 | // Verify forward-proxy requested URL domain matches the Host: header |
65d2fdbf | 696 | // Special case: we don't have a default-port to check for CONNECT. Assume URL is correct. |
ba4d9da0 AJ |
697 | debugs(85, 3, HERE << "FAIL on validate URL port " << http->request->port << " matches Host: default port " << urlDefaultPort(http->request->protocol)); |
698 | hostHeaderVerifyFailed("URL port", "default port"); | |
699 | } else { | |
700 | // Okay no problem. | |
701 | debugs(85, 3, HERE << "validate passed."); | |
45e5102d | 702 | http->request->flags.hostVerified = 1; |
ba4d9da0 | 703 | http->doCallouts(); |
fe97983f | 704 | } |
ba4d9da0 | 705 | safe_free(hostB); |
fe97983f AJ |
706 | } |
707 | ||
edce4d98 | 708 | /* This is the entry point for external users of the client_side routines */ |
709 | void | |
de31d06f | 710 | ClientRequestContext::clientAccessCheck() |
edce4d98 | 711 | { |
fbe9e379 | 712 | #if FOLLOW_X_FORWARDED_FOR |
f1a1f20a | 713 | if (!http->request->flags.doneFollowXff() && |
26ac0430 AJ |
714 | Config.accessList.followXFF && |
715 | http->request->header.has(HDR_X_FORWARDED_FOR)) { | |
d096ace1 AJ |
716 | |
717 | /* we always trust the direct client address for actual use */ | |
718 | http->request->indirect_client_addr = http->request->client_addr; | |
fafd0efa | 719 | http->request->indirect_client_addr.SetPort(0); |
d096ace1 AJ |
720 | |
721 | /* setup the XFF iterator for processing */ | |
722 | http->request->x_forwarded_for_iterator = http->request->header.getList(HDR_X_FORWARDED_FOR); | |
723 | ||
724 | /* begin by checking to see if we trust direct client enough to walk XFF */ | |
725 | acl_checklist = clientAclChecklistCreate(Config.accessList.followXFF, http); | |
726 | acl_checklist->nonBlockingCheck(clientFollowXForwardedForCheck, this); | |
3d674977 AJ |
727 | return; |
728 | } | |
fbe9e379 | 729 | #endif |
493d3865 | 730 | |
b50e327b AJ |
731 | if (Config.accessList.http) { |
732 | acl_checklist = clientAclChecklistCreate(Config.accessList.http, http); | |
733 | acl_checklist->nonBlockingCheck(clientAccessCheckDoneWrapper, this); | |
734 | } else { | |
735 | debugs(0, DBG_CRITICAL, "No http_access configuration found. This will block ALL traffic"); | |
736 | clientAccessCheckDone(ACCESS_DENIED); | |
737 | } | |
edce4d98 | 738 | } |
739 | ||
533493da AJ |
740 | /** |
741 | * Identical in operation to clientAccessCheck() but performed later using different configured ACL list. | |
742 | * The default here is to allow all. Since the earlier http_access should do a default deny all. | |
743 | * This check is just for a last-minute denial based on adapted request headers. | |
744 | */ | |
745 | void | |
746 | ClientRequestContext::clientAccessCheck2() | |
747 | { | |
748 | if (Config.accessList.adapted_http) { | |
749 | acl_checklist = clientAclChecklistCreate(Config.accessList.adapted_http, http); | |
750 | acl_checklist->nonBlockingCheck(clientAccessCheckDoneWrapper, this); | |
751 | } else { | |
327e2131 | 752 | debugs(85, 2, HERE << "No adapted_http_access configuration. default: ALLOW"); |
533493da AJ |
753 | clientAccessCheckDone(ACCESS_ALLOWED); |
754 | } | |
755 | } | |
756 | ||
edce4d98 | 757 | void |
2efeb0b7 | 758 | clientAccessCheckDoneWrapper(allow_t answer, void *data) |
edce4d98 | 759 | { |
de31d06f | 760 | ClientRequestContext *calloutContext = (ClientRequestContext *) data; |
fbade053 | 761 | |
de31d06f | 762 | if (!calloutContext->httpStateIsValid()) |
62e76326 | 763 | return; |
62e76326 | 764 | |
de31d06f | 765 | calloutContext->clientAccessCheckDone(answer); |
766 | } | |
767 | ||
9d5e7196 AJ |
768 | void |
769 | ClientRequestContext::clientAccessCheckDone(const allow_t &answer) | |
de31d06f | 770 | { |
771 | acl_checklist = NULL; | |
edce4d98 | 772 | err_type page_id; |
773 | http_status status; | |
9d5e7196 AJ |
774 | debugs(85, 2, "The request " << |
775 | RequestMethodStr(http->request->method) << " " << | |
776 | http->uri << " is " << answer << | |
777 | ", because it matched '" << | |
778 | (AclMatchedName ? AclMatchedName : "NO ACL's") << "'" ); | |
f5691f9c | 779 | |
2f1431ea AJ |
780 | #if USE_AUTH |
781 | char const *proxy_auth_msg = "<null>"; | |
94a396a3 | 782 | if (http->getConn() != NULL && http->getConn()->auth_user_request != NULL) |
f5691f9c | 783 | proxy_auth_msg = http->getConn()->auth_user_request->denyMessage("<null>"); |
784 | else if (http->request->auth_user_request != NULL) | |
785 | proxy_auth_msg = http->request->auth_user_request->denyMessage("<null>"); | |
2f1431ea | 786 | #endif |
62e76326 | 787 | |
dd332b92 | 788 | if (answer != ACCESS_ALLOWED) { |
9d5e7196 | 789 | // auth has a grace period where credentials can be expired but okay not to challenge. |
309347ef | 790 | |
9d5e7196 AJ |
791 | /* Send an auth challenge or error */ |
792 | // XXX: do we still need aclIsProxyAuth() ? | |
dd332b92 | 793 | bool auth_challenge = (answer == ACCESS_AUTH_REQUIRED || aclIsProxyAuth(AclMatchedName)); |
9d5e7196 AJ |
794 | debugs(85, 5, "Access Denied: " << http->uri); |
795 | debugs(85, 5, "AclMatchedName = " << (AclMatchedName ? AclMatchedName : "<null>")); | |
2f1431ea | 796 | #if USE_AUTH |
9d5e7196 AJ |
797 | if (auth_challenge) |
798 | debugs(33, 5, "Proxy Auth Message = " << (proxy_auth_msg ? proxy_auth_msg : "<null>")); | |
2f1431ea | 799 | #endif |
9ce7856a | 800 | |
9d5e7196 AJ |
801 | /* |
802 | * NOTE: get page_id here, based on AclMatchedName because if | |
803 | * USE_DELAY_POOLS is enabled, then AclMatchedName gets clobbered in | |
804 | * the clientCreateStoreEntry() call just below. Pedro Ribeiro | |
805 | * <pribeiro@isel.pt> | |
806 | */ | |
807 | page_id = aclGetDenyInfoPage(&Config.denyInfoList, AclMatchedName, answer != ACCESS_AUTH_REQUIRED); | |
9ce7856a | 808 | |
9d5e7196 | 809 | http->logType = LOG_TCP_DENIED; |
62e76326 | 810 | |
9d5e7196 | 811 | if (auth_challenge) { |
2f1431ea | 812 | #if USE_AUTH |
450fe1cb | 813 | if (http->request->flags.sslBumped) { |
9d5e7196 AJ |
814 | /*SSL Bumped request, authentication is not possible*/ |
815 | status = HTTP_FORBIDDEN; | |
816 | } else if (!http->flags.accel) { | |
817 | /* Proxy authorisation needed */ | |
818 | status = HTTP_PROXY_AUTHENTICATION_REQUIRED; | |
819 | } else { | |
820 | /* WWW authorisation needed */ | |
821 | status = HTTP_UNAUTHORIZED; | |
822 | } | |
ed6163ef | 823 | #else |
9d5e7196 AJ |
824 | // need auth, but not possible to do. |
825 | status = HTTP_FORBIDDEN; | |
ed6163ef | 826 | #endif |
9d5e7196 AJ |
827 | if (page_id == ERR_NONE) |
828 | page_id = ERR_CACHE_ACCESS_DENIED; | |
829 | } else { | |
830 | status = HTTP_FORBIDDEN; | |
ed6163ef | 831 | |
9d5e7196 AJ |
832 | if (page_id == ERR_NONE) |
833 | page_id = ERR_ACCESS_DENIED; | |
834 | } | |
62e76326 | 835 | |
9d5e7196 AJ |
836 | Ip::Address tmpnoaddr; |
837 | tmpnoaddr.SetNoAddr(); | |
87f237a9 | 838 | error = clientBuildError(page_id, status, |
68715527 CT |
839 | NULL, |
840 | http->getConn() != NULL ? http->getConn()->clientConnection->remote : tmpnoaddr, | |
841 | http->request | |
87f237a9 | 842 | ); |
68715527 | 843 | |
2f1431ea | 844 | #if USE_AUTH |
87f237a9 | 845 | error->auth_user_request = |
68715527 CT |
846 | http->getConn() != NULL && http->getConn()->auth_user_request != NULL ? |
847 | http->getConn()->auth_user_request : http->request->auth_user_request; | |
2f1431ea | 848 | #endif |
68715527 CT |
849 | |
850 | readNextRequest = true; | |
9d5e7196 | 851 | } |
de31d06f | 852 | |
dd332b92 | 853 | /* ACCESS_ALLOWED continues here ... */ |
de31d06f | 854 | safe_free(http->uri); |
855 | ||
856 | http->uri = xstrdup(urlCanonical(http->request)); | |
857 | ||
858 | http->doCallouts(); | |
859 | } | |
860 | ||
a83c6ed6 | 861 | #if USE_ADAPTATION |
de31d06f | 862 | void |
79628299 | 863 | ClientHttpRequest::noteAdaptationAclCheckDone(Adaptation::ServiceGroupPointer g) |
de31d06f | 864 | { |
a83c6ed6 | 865 | debugs(93,3,HERE << this << " adaptationAclCheckDone called"); |
6ec67de9 | 866 | |
e1381638 | 867 | #if ICAP_CLIENT |
79628299 | 868 | Adaptation::Icap::History::Pointer ih = request->icapHistory(); |
e1381638 | 869 | if (ih != NULL) { |
79628299 CT |
870 | if (getConn() != NULL) { |
871 | ih->rfc931 = getConn()->clientConnection->rfc931; | |
e1381638 | 872 | #if USE_SSL |
79628299 CT |
873 | assert(getConn()->clientConnection != NULL); |
874 | ih->ssluser = sslGetUserEmail(fd_table[getConn()->clientConnection->fd].ssl); | |
e1381638 | 875 | #endif |
3ff65596 | 876 | } |
79628299 CT |
877 | ih->log_uri = log_uri; |
878 | ih->req_sz = req_sz; | |
3ff65596 AR |
879 | } |
880 | #endif | |
881 | ||
a22e6cd3 AR |
882 | if (!g) { |
883 | debugs(85,3, HERE << "no adaptation needed"); | |
79628299 | 884 | doCallouts(); |
5f8252d2 | 885 | return; |
886 | } | |
de31d06f | 887 | |
79628299 | 888 | startAdaptation(g); |
edce4d98 | 889 | } |
890 | ||
de31d06f | 891 | #endif |
892 | ||
14cc8559 | 893 | static void |
2efeb0b7 | 894 | clientRedirectAccessCheckDone(allow_t answer, void *data) |
14cc8559 | 895 | { |
896 | ClientRequestContext *context = (ClientRequestContext *)data; | |
9d5e7196 AJ |
897 | ClientHttpRequest *http = context->http; |
898 | context->acl_checklist = NULL; | |
14cc8559 | 899 | |
900 | if (answer == ACCESS_ALLOWED) | |
9d5e7196 | 901 | redirectStart(http, clientRedirectDoneWrapper, context); |
14cc8559 | 902 | else |
de31d06f | 903 | context->clientRedirectDone(NULL); |
14cc8559 | 904 | } |
905 | ||
de31d06f | 906 | void |
907 | ClientRequestContext::clientRedirectStart() | |
14cc8559 | 908 | { |
48e7baac | 909 | debugs(33, 5, HERE << "'" << http->uri << "'"); |
14cc8559 | 910 | |
14cc8559 | 911 | if (Config.accessList.redirector) { |
de31d06f | 912 | acl_checklist = clientAclChecklistCreate(Config.accessList.redirector, http); |
913 | acl_checklist->nonBlockingCheck(clientRedirectAccessCheckDone, this); | |
14cc8559 | 914 | } else |
de31d06f | 915 | redirectStart(http, clientRedirectDoneWrapper, this); |
14cc8559 | 916 | } |
917 | ||
edce4d98 | 918 | static int |
59a1efb2 | 919 | clientHierarchical(ClientHttpRequest * http) |
edce4d98 | 920 | { |
921 | const char *url = http->uri; | |
190154cf | 922 | HttpRequest *request = http->request; |
60745f24 | 923 | HttpRequestMethod method = request->method; |
edce4d98 | 924 | const wordlist *p = NULL; |
925 | ||
2962f8b8 | 926 | // intercepted requests MUST NOT (yet) be sent to peers unless verified |
450fe1cb | 927 | if (!request->flags.hostVerified && (request->flags.intercepted || request->flags.spoofClientIp)) |
2962f8b8 AJ |
928 | return 0; |
929 | ||
69660be0 | 930 | /* |
931 | * IMS needs a private key, so we can use the hierarchy for IMS only if our | |
932 | * neighbors support private keys | |
933 | */ | |
62e76326 | 934 | |
45e5102d | 935 | if (request->flags.ims && !neighbors_do_private_keys) |
62e76326 | 936 | return 0; |
937 | ||
69660be0 | 938 | /* |
939 | * This is incorrect: authenticating requests can be sent via a hierarchy | |
06b97e72 | 940 | * (they can even be cached if the correct headers are set on the reply) |
edce4d98 | 941 | */ |
45e5102d | 942 | if (request->flags.auth) |
62e76326 | 943 | return 0; |
944 | ||
edce4d98 | 945 | if (method == METHOD_TRACE) |
62e76326 | 946 | return 1; |
947 | ||
edce4d98 | 948 | if (method != METHOD_GET) |
62e76326 | 949 | return 0; |
950 | ||
edce4d98 | 951 | /* scan hierarchy_stoplist */ |
952 | for (p = Config.hierarchy_stoplist; p; p = p->next) | |
62e76326 | 953 | if (strstr(url, p->key)) |
954 | return 0; | |
955 | ||
450fe1cb | 956 | if (request->flags.loopDetected) |
62e76326 | 957 | return 0; |
958 | ||
0c3d3f65 | 959 | if (request->protocol == AnyP::PROTO_HTTP) |
62e76326 | 960 | return httpCachable(method); |
961 | ||
0c3d3f65 | 962 | if (request->protocol == AnyP::PROTO_GOPHER) |
62e76326 | 963 | return gopherCachable(request); |
964 | ||
39a19cb7 | 965 | if (request->protocol == AnyP::PROTO_CACHE_OBJECT) |
62e76326 | 966 | return 0; |
967 | ||
edce4d98 | 968 | return 1; |
969 | } | |
970 | ||
46a1f562 HN |
971 | static void |
972 | clientCheckPinning(ClientHttpRequest * http) | |
973 | { | |
974 | HttpRequest *request = http->request; | |
975 | HttpHeader *req_hdr = &request->header; | |
976 | ConnStateData *http_conn = http->getConn(); | |
977 | ||
978 | /* Internal requests such as those from ESI includes may be without | |
979 | * a client connection | |
980 | */ | |
981 | if (!http_conn) | |
f54f527e | 982 | return; |
46a1f562 | 983 | |
450fe1cb FC |
984 | request->flags.connectionAuthDisabled = http_conn->port->connection_auth_disabled; |
985 | if (!request->flags.connectionAuthDisabled) { | |
73c36fd9 | 986 | if (Comm::IsConnOpen(http_conn->pinning.serverConnection)) { |
46a1f562 | 987 | if (http_conn->pinning.auth) { |
450fe1cb | 988 | request->flags.connectionAuth = 1; |
45e5102d | 989 | request->flags.auth = 1; |
46a1f562 | 990 | } else { |
450fe1cb | 991 | request->flags.connectionProxyAuth = 1; |
46a1f562 | 992 | } |
b1cf2350 AJ |
993 | // These should already be linked correctly. |
994 | assert(request->clientConnectionManager == http_conn); | |
46a1f562 HN |
995 | } |
996 | } | |
997 | ||
998 | /* check if connection auth is used, and flag as candidate for pinning | |
45e5102d | 999 | * in such case. |
450fe1cb | 1000 | * Note: we may need to set flags.connectionAuth even if the connection |
46a1f562 HN |
1001 | * is already pinned if it was pinned earlier due to proxy auth |
1002 | */ | |
450fe1cb | 1003 | if (!request->flags.connectionAuth) { |
46a1f562 HN |
1004 | if (req_hdr->has(HDR_AUTHORIZATION) || req_hdr->has(HDR_PROXY_AUTHORIZATION)) { |
1005 | HttpHeaderPos pos = HttpHeaderInitPos; | |
1006 | HttpHeaderEntry *e; | |
1007 | int may_pin = 0; | |
1008 | while ((e = req_hdr->getEntry(&pos))) { | |
1009 | if (e->id == HDR_AUTHORIZATION || e->id == HDR_PROXY_AUTHORIZATION) { | |
1010 | const char *value = e->value.rawBuf(); | |
1011 | if (strncasecmp(value, "NTLM ", 5) == 0 | |
1012 | || | |
1013 | strncasecmp(value, "Negotiate ", 10) == 0 | |
1014 | || | |
1015 | strncasecmp(value, "Kerberos ", 9) == 0) { | |
1016 | if (e->id == HDR_AUTHORIZATION) { | |
450fe1cb | 1017 | request->flags.connectionAuth = 1; |
46a1f562 HN |
1018 | may_pin = 1; |
1019 | } else { | |
450fe1cb | 1020 | request->flags.connectionProxyAuth = 1; |
46a1f562 HN |
1021 | may_pin = 1; |
1022 | } | |
1023 | } | |
1024 | } | |
1025 | } | |
1026 | if (may_pin && !request->pinnedConnection()) { | |
b1cf2350 AJ |
1027 | // These should already be linked correctly. Just need the ServerConnection to pinn. |
1028 | assert(request->clientConnectionManager == http_conn); | |
46a1f562 HN |
1029 | } |
1030 | } | |
1031 | } | |
1032 | } | |
1033 | ||
edce4d98 | 1034 | static void |
59a1efb2 | 1035 | clientInterpretRequestHeaders(ClientHttpRequest * http) |
edce4d98 | 1036 | { |
190154cf | 1037 | HttpRequest *request = http->request; |
0ef77270 | 1038 | HttpHeader *req_hdr = &request->header; |
5086523e | 1039 | bool no_cache = false; |
edce4d98 | 1040 | const char *str; |
62e76326 | 1041 | |
edce4d98 | 1042 | request->imslen = -1; |
a9925b40 | 1043 | request->ims = req_hdr->getTime(HDR_IF_MODIFIED_SINCE); |
62e76326 | 1044 | |
edce4d98 | 1045 | if (request->ims > 0) |
45e5102d | 1046 | request->flags.ims = 1; |
62e76326 | 1047 | |
450fe1cb | 1048 | if (!request->flags.ignoreCc) { |
432bc83c | 1049 | if (request->cache_control) |
4ce6e3b5 | 1050 | if (request->cache_control->noCache()) |
5086523e | 1051 | no_cache=true; |
62e76326 | 1052 | |
cdf55306 AJ |
1053 | // RFC 2616: treat Pragma:no-cache as if it was Cache-Control:no-cache when Cache-Control is missing |
1054 | else if (req_hdr->has(HDR_PRAGMA)) | |
1055 | no_cache = req_hdr->hasListMember(HDR_PRAGMA,"no-cache",','); | |
1056 | ||
432bc83c HN |
1057 | /* |
1058 | * Work around for supporting the Reload button in IE browsers when Squid | |
1059 | * is used as an accelerator or transparent proxy, by turning accelerated | |
1060 | * IMS request to no-cache requests. Now knows about IE 5.5 fix (is | |
1061 | * actually only fixed in SP1, but we can't tell whether we are talking to | |
1062 | * SP1 or not so all 5.5 versions are treated 'normally'). | |
1063 | */ | |
1064 | if (Config.onoff.ie_refresh) { | |
45e5102d | 1065 | if (http->flags.accel && request->flags.ims) { |
432bc83c HN |
1066 | if ((str = req_hdr->getStr(HDR_USER_AGENT))) { |
1067 | if (strstr(str, "MSIE 5.01") != NULL) | |
5086523e | 1068 | no_cache=true; |
432bc83c | 1069 | else if (strstr(str, "MSIE 5.0") != NULL) |
5086523e | 1070 | no_cache=true; |
432bc83c | 1071 | else if (strstr(str, "MSIE 4.") != NULL) |
5086523e | 1072 | no_cache=true; |
432bc83c | 1073 | else if (strstr(str, "MSIE 3.") != NULL) |
5086523e | 1074 | no_cache=true; |
432bc83c | 1075 | } |
62e76326 | 1076 | } |
1077 | } | |
edce4d98 | 1078 | } |
914b89a2 | 1079 | |
1080 | if (request->method == METHOD_OTHER) { | |
5086523e | 1081 | no_cache=true; |
60745f24 | 1082 | } |
62e76326 | 1083 | |
edce4d98 | 1084 | if (no_cache) { |
626096be | 1085 | #if USE_HTTP_VIOLATIONS |
62e76326 | 1086 | |
1087 | if (Config.onoff.reload_into_ims) | |
450fe1cb | 1088 | request->flags.nocacheHack = 1; |
62e76326 | 1089 | else if (refresh_nocache_hack) |
450fe1cb | 1090 | request->flags.nocacheHack = 1; |
62e76326 | 1091 | else |
edce4d98 | 1092 | #endif |
62e76326 | 1093 | |
450fe1cb | 1094 | request->flags.noCache = 1; |
edce4d98 | 1095 | } |
62e76326 | 1096 | |
0ef77270 | 1097 | /* ignore range header in non-GETs or non-HEADs */ |
1098 | if (request->method == METHOD_GET || request->method == METHOD_HEAD) { | |
56713d9a AR |
1099 | // XXX: initialize if we got here without HttpRequest::parseHeader() |
1100 | if (!request->range) | |
1101 | request->range = req_hdr->getRange(); | |
62e76326 | 1102 | |
1103 | if (request->range) { | |
450fe1cb | 1104 | request->flags.isRanged=true; |
62e76326 | 1105 | clientStreamNode *node = (clientStreamNode *)http->client_stream.tail->data; |
1106 | /* XXX: This is suboptimal. We should give the stream the range set, | |
1107 | * and thereby let the top of the stream set the offset when the | |
26ac0430 | 1108 | * size becomes known. As it is, we will end up requesting from 0 |
62e76326 | 1109 | * for evey -X range specification. |
1110 | * RBC - this may be somewhat wrong. We should probably set the range | |
1111 | * iter up at this point. | |
1112 | */ | |
1113 | node->readBuffer.offset = request->range->lowestOffset(0); | |
1114 | http->range_iter.pos = request->range->begin(); | |
1115 | http->range_iter.valid = true; | |
1116 | } | |
edce4d98 | 1117 | } |
62e76326 | 1118 | |
0ef77270 | 1119 | /* Only HEAD and GET requests permit a Range or Request-Range header. |
1120 | * If these headers appear on any other type of request, delete them now. | |
1121 | */ | |
1122 | else { | |
1123 | req_hdr->delById(HDR_RANGE); | |
1124 | req_hdr->delById(HDR_REQUEST_RANGE); | |
56713d9a | 1125 | delete request->range; |
0ef77270 | 1126 | request->range = NULL; |
1127 | } | |
1128 | ||
a9925b40 | 1129 | if (req_hdr->has(HDR_AUTHORIZATION)) |
45e5102d | 1130 | request->flags.auth = 1; |
62e76326 | 1131 | |
46a1f562 | 1132 | clientCheckPinning(http); |
d67acb4e | 1133 | |
edce4d98 | 1134 | if (request->login[0] != '\0') |
45e5102d | 1135 | request->flags.auth = 1; |
62e76326 | 1136 | |
a9925b40 | 1137 | if (req_hdr->has(HDR_VIA)) { |
30abd221 | 1138 | String s = req_hdr->getList(HDR_VIA); |
62e76326 | 1139 | /* |
3c4fcf0f | 1140 | * ThisCache cannot be a member of Via header, "1.1 ThisCache" can. |
62e76326 | 1141 | * Note ThisCache2 has a space prepended to the hostname so we don't |
1142 | * accidentally match super-domains. | |
1143 | */ | |
1144 | ||
1145 | if (strListIsSubstr(&s, ThisCache2, ',')) { | |
1146 | debugObj(33, 1, "WARNING: Forwarding loop detected for:\n", | |
1147 | request, (ObjPackMethod) & httpRequestPack); | |
450fe1cb | 1148 | request->flags.loopDetected = 1; |
62e76326 | 1149 | } |
1150 | ||
21f6708d | 1151 | #if USE_FORW_VIA_DB |
bb790702 | 1152 | fvdbCountVia(s.termedBuf()); |
62e76326 | 1153 | |
edce4d98 | 1154 | #endif |
62e76326 | 1155 | |
30abd221 | 1156 | s.clean(); |
edce4d98 | 1157 | } |
62e76326 | 1158 | |
21f6708d | 1159 | #if USE_FORW_VIA_DB |
62e76326 | 1160 | |
a9925b40 | 1161 | if (req_hdr->has(HDR_X_FORWARDED_FOR)) { |
30abd221 | 1162 | String s = req_hdr->getList(HDR_X_FORWARDED_FOR); |
bb790702 | 1163 | fvdbCountForw(s.termedBuf()); |
30abd221 | 1164 | s.clean(); |
edce4d98 | 1165 | } |
62e76326 | 1166 | |
edce4d98 | 1167 | #endif |
62e76326 | 1168 | |
45e5102d | 1169 | request->flags.cachable = http->request->cacheable(); |
62e76326 | 1170 | |
edce4d98 | 1171 | if (clientHierarchical(http)) |
45e5102d | 1172 | request->flags.hierarchical = 1; |
62e76326 | 1173 | |
bf8fe701 | 1174 | debugs(85, 5, "clientInterpretRequestHeaders: REQ_NOCACHE = " << |
450fe1cb | 1175 | (request->flags.noCache ? "SET" : "NOT SET")); |
bf8fe701 | 1176 | debugs(85, 5, "clientInterpretRequestHeaders: REQ_CACHABLE = " << |
45e5102d | 1177 | (request->flags.cachable ? "SET" : "NOT SET")); |
bf8fe701 | 1178 | debugs(85, 5, "clientInterpretRequestHeaders: REQ_HIERARCHICAL = " << |
45e5102d | 1179 | (request->flags.hierarchical ? "SET" : "NOT SET")); |
62e76326 | 1180 | |
edce4d98 | 1181 | } |
1182 | ||
1183 | void | |
de31d06f | 1184 | clientRedirectDoneWrapper(void *data, char *result) |
edce4d98 | 1185 | { |
de31d06f | 1186 | ClientRequestContext *calloutContext = (ClientRequestContext *)data; |
db02222f | 1187 | |
de31d06f | 1188 | if (!calloutContext->httpStateIsValid()) |
62e76326 | 1189 | return; |
62e76326 | 1190 | |
de31d06f | 1191 | calloutContext->clientRedirectDone(result); |
1192 | } | |
1193 | ||
1194 | void | |
1195 | ClientRequestContext::clientRedirectDone(char *result) | |
1196 | { | |
190154cf | 1197 | HttpRequest *old_request = http->request; |
bf8fe701 | 1198 | debugs(85, 5, "clientRedirectDone: '" << http->uri << "' result=" << (result ? result : "NULL")); |
de31d06f | 1199 | assert(redirect_state == REDIRECT_PENDING); |
1200 | redirect_state = REDIRECT_DONE; | |
62e76326 | 1201 | |
edce4d98 | 1202 | if (result) { |
62e76326 | 1203 | http_status status = (http_status) atoi(result); |
1204 | ||
1205 | if (status == HTTP_MOVED_PERMANENTLY | |
1206 | || status == HTTP_MOVED_TEMPORARILY | |
1207 | || status == HTTP_SEE_OTHER | |
6bc67152 | 1208 | || status == HTTP_PERMANENT_REDIRECT |
62e76326 | 1209 | || status == HTTP_TEMPORARY_REDIRECT) { |
1210 | char *t = result; | |
1211 | ||
1212 | if ((t = strchr(result, ':')) != NULL) { | |
1213 | http->redirect.status = status; | |
1214 | http->redirect.location = xstrdup(t + 1); | |
e5b677f0 | 1215 | // TODO: validate the URL produced here is RFC 2616 compliant absolute URI |
62e76326 | 1216 | } else { |
6bc67152 | 1217 | debugs(85, DBG_CRITICAL, "ERROR: URL-rewrite produces invalid " << status << " redirect Location: " << result); |
62e76326 | 1218 | } |
e5b677f0 | 1219 | } else if (strcmp(result, http->uri)) { |
9be14530 AJ |
1220 | // XXX: validate the URL properly *without* generating a whole new request object right here. |
1221 | // XXX: the clone() should be done only AFTER we know the new URL is valid. | |
1222 | HttpRequest *new_request = old_request->clone(); | |
1223 | if (urlParse(old_request->method, result, new_request)) { | |
1224 | debugs(61,2, HERE << "URL-rewriter diverts URL from " << urlCanonical(old_request) << " to " << urlCanonical(new_request)); | |
1225 | ||
1226 | // update the new request to flag the re-writing was done on it | |
45e5102d | 1227 | new_request->flags.redirected = 1; |
9be14530 AJ |
1228 | |
1229 | // unlink bodypipe from the old request. Not needed there any longer. | |
1230 | if (old_request->body_pipe != NULL) { | |
1231 | old_request->body_pipe = NULL; | |
1232 | debugs(61,2, HERE << "URL-rewriter diverts body_pipe " << new_request->body_pipe << | |
1233 | " from request " << old_request << " to " << new_request); | |
1234 | } | |
1235 | ||
1236 | // update the current working ClientHttpRequest fields | |
1237 | safe_free(http->uri); | |
1238 | http->uri = xstrdup(urlCanonical(new_request)); | |
1239 | HTTPMSGUNLOCK(old_request); | |
1240 | http->request = HTTPMSGLOCK(new_request); | |
1241 | } else { | |
e5b677f0 | 1242 | debugs(85, DBG_CRITICAL, "ERROR: URL-rewrite produces invalid request: " << |
c9fd01b4 | 1243 | old_request->method << " " << result << " " << old_request->http_ver); |
9be14530 AJ |
1244 | delete new_request; |
1245 | } | |
74b48915 | 1246 | } |
edce4d98 | 1247 | } |
62e76326 | 1248 | |
edce4d98 | 1249 | /* FIXME PIPELINE: This is innacurate during pipelining */ |
62e76326 | 1250 | |
73c36fd9 AJ |
1251 | if (http->getConn() != NULL && Comm::IsConnOpen(http->getConn()->clientConnection)) |
1252 | fd_note(http->getConn()->clientConnection->fd, http->uri); | |
62e76326 | 1253 | |
c8be6d7b | 1254 | assert(http->uri); |
62e76326 | 1255 | |
de31d06f | 1256 | http->doCallouts(); |
edce4d98 | 1257 | } |
1258 | ||
b50e327b AJ |
1259 | /** Test cache allow/deny configuration |
1260 | * Sets flags.cachable=1 if caching is not denied. | |
1261 | */ | |
edce4d98 | 1262 | void |
8e2745f4 | 1263 | ClientRequestContext::checkNoCache() |
edce4d98 | 1264 | { |
b50e327b AJ |
1265 | if (Config.accessList.noCache) { |
1266 | acl_checklist = clientAclChecklistCreate(Config.accessList.noCache, http); | |
1267 | acl_checklist->nonBlockingCheck(checkNoCacheDoneWrapper, this); | |
1268 | } else { | |
1269 | /* unless otherwise specified, we try to cache. */ | |
2efeb0b7 | 1270 | checkNoCacheDone(ACCESS_ALLOWED); |
b50e327b | 1271 | } |
edce4d98 | 1272 | } |
1273 | ||
de31d06f | 1274 | static void |
2efeb0b7 | 1275 | checkNoCacheDoneWrapper(allow_t answer, void *data) |
edce4d98 | 1276 | { |
de31d06f | 1277 | ClientRequestContext *calloutContext = (ClientRequestContext *) data; |
e4a67a80 | 1278 | |
de31d06f | 1279 | if (!calloutContext->httpStateIsValid()) |
1280 | return; | |
1281 | ||
1282 | calloutContext->checkNoCacheDone(answer); | |
8e2745f4 | 1283 | } |
4fb35c3c | 1284 | |
8e2745f4 | 1285 | void |
2efeb0b7 | 1286 | ClientRequestContext::checkNoCacheDone(const allow_t &answer) |
62e76326 | 1287 | { |
8e2745f4 | 1288 | acl_checklist = NULL; |
45e5102d | 1289 | http->request->flags.cachable = (answer == ACCESS_ALLOWED); |
de31d06f | 1290 | http->doCallouts(); |
edce4d98 | 1291 | } |
1292 | ||
e0c0d54c CT |
1293 | #if USE_SSL |
1294 | bool | |
1295 | ClientRequestContext::sslBumpAccessCheck() | |
1296 | { | |
08097970 AR |
1297 | // If SSL connection tunneling or bumping decision has been made, obey it. |
1298 | const Ssl::BumpMode bumpMode = http->getConn()->sslBumpMode; | |
1299 | if (bumpMode != Ssl::bumpEnd) { | |
1300 | debugs(85, 5, HERE << "SslBump already decided (" << bumpMode << | |
1301 | "), " << "ignoring ssl_bump for " << http->getConn()); | |
71cae389 | 1302 | http->al->ssl.bumpMode = bumpMode; // inherited from bumped connection |
08097970 AR |
1303 | return false; |
1304 | } | |
e0c0d54c | 1305 | |
08097970 AR |
1306 | // If we have not decided yet, decide whether to bump now. |
1307 | ||
1308 | // Bumping here can only start with a CONNECT request on a bumping port | |
1309 | // (bumping of intercepted SSL conns is decided before we get 1st request). | |
1310 | // We also do not bump redirected CONNECT requests. | |
1311 | if (http->request->method != METHOD_CONNECT || http->redirect.status || | |
87f237a9 | 1312 | !Config.accessList.ssl_bump || !http->getConn()->port->sslBump) { |
71cae389 | 1313 | http->al->ssl.bumpMode = Ssl::bumpEnd; // SslBump does not apply; log - |
08097970 | 1314 | debugs(85, 5, HERE << "cannot SslBump this request"); |
e0c0d54c CT |
1315 | return false; |
1316 | } | |
08097970 AR |
1317 | |
1318 | // Do not bump during authentication: clients would not proxy-authenticate | |
1319 | // if we delay a 407 response and respond with 200 OK to CONNECT. | |
1320 | if (error && error->httpStatus == HTTP_PROXY_AUTHENTICATION_REQUIRED) { | |
71cae389 | 1321 | http->al->ssl.bumpMode = Ssl::bumpEnd; // SslBump does not apply; log - |
08097970 AR |
1322 | debugs(85, 5, HERE << "no SslBump during proxy authentication"); |
1323 | return false; | |
1324 | } | |
1325 | ||
1326 | debugs(85, 5, HERE << "SslBump possible, checking ACL"); | |
1327 | ||
1328 | ACLFilledChecklist *acl_checklist = clientAclChecklistCreate(Config.accessList.ssl_bump, http); | |
1329 | acl_checklist->nonBlockingCheck(sslBumpAccessCheckDoneWrapper, this); | |
1330 | return true; | |
e0c0d54c CT |
1331 | } |
1332 | ||
f8901ea9 | 1333 | /** |
e0c0d54c CT |
1334 | * A wrapper function to use the ClientRequestContext::sslBumpAccessCheckDone method |
1335 | * as ACLFilledChecklist callback | |
1336 | */ | |
1337 | static void | |
2efeb0b7 | 1338 | sslBumpAccessCheckDoneWrapper(allow_t answer, void *data) |
e0c0d54c CT |
1339 | { |
1340 | ClientRequestContext *calloutContext = static_cast<ClientRequestContext *>(data); | |
9d5e7196 AJ |
1341 | |
1342 | if (!calloutContext->httpStateIsValid()) | |
1343 | return; | |
ed6163ef | 1344 | calloutContext->sslBumpAccessCheckDone(answer); |
e0c0d54c CT |
1345 | } |
1346 | ||
1347 | void | |
ed6163ef | 1348 | ClientRequestContext::sslBumpAccessCheckDone(const allow_t &answer) |
e0c0d54c | 1349 | { |
ed6163ef AJ |
1350 | if (!httpStateIsValid()) |
1351 | return; | |
1352 | ||
08097970 | 1353 | const Ssl::BumpMode bumpMode = answer == ACCESS_ALLOWED ? |
87f237a9 | 1354 | static_cast<Ssl::BumpMode>(answer.kind) : Ssl::bumpNone; |
08097970 | 1355 | http->sslBumpNeed(bumpMode); // for processRequest() to bump if needed |
71cae389 | 1356 | http->al->ssl.bumpMode = bumpMode; // for logging |
caf3666d | 1357 | |
e0c0d54c CT |
1358 | http->doCallouts(); |
1359 | } | |
1360 | #endif | |
1361 | ||
69660be0 | 1362 | /* |
1363 | * Identify requests that do not go through the store and client side stream | |
1364 | * and forward them to the appropriate location. All other requests, request | |
1365 | * them. | |
edce4d98 | 1366 | */ |
1367 | void | |
8e2745f4 | 1368 | ClientHttpRequest::processRequest() |
edce4d98 | 1369 | { |
60745f24 | 1370 | debugs(85, 4, "clientProcessRequest: " << RequestMethodStr(request->method) << " '" << uri << "'"); |
62e76326 | 1371 | |
31281814 | 1372 | if (request->method == METHOD_CONNECT && !redirect.status) { |
3712be3f | 1373 | #if USE_SSL |
31281814 AJ |
1374 | if (sslBumpNeeded()) { |
1375 | sslBumpStart(); | |
1376 | return; | |
1377 | } | |
3712be3f | 1378 | #endif |
62e76326 | 1379 | logType = LOG_TCP_MISS; |
f84dd7eb | 1380 | getConn()->stopReading(); // tunnels read for themselves |
41ebd397 | 1381 | tunnelStart(this, &out.size, &al->http.code); |
62e76326 | 1382 | return; |
edce4d98 | 1383 | } |
62e76326 | 1384 | |
8e2745f4 | 1385 | httpStart(); |
1386 | } | |
1387 | ||
1388 | void | |
1389 | ClientHttpRequest::httpStart() | |
1390 | { | |
559da936 | 1391 | PROF_start(httpStart); |
8e2745f4 | 1392 | logType = LOG_TAG_NONE; |
38e16f92 | 1393 | debugs(85, 4, "ClientHttpRequest::httpStart: " << Format::log_tags[logType] << " for '" << uri << "'"); |
bf8fe701 | 1394 | |
edce4d98 | 1395 | /* no one should have touched this */ |
8e2745f4 | 1396 | assert(out.offset == 0); |
edce4d98 | 1397 | /* Use the Stream Luke */ |
8e2745f4 | 1398 | clientStreamNode *node = (clientStreamNode *)client_stream.tail->data; |
1399 | clientStreamRead(node, this, node->readBuffer); | |
559da936 | 1400 | PROF_stop(httpStart); |
edce4d98 | 1401 | } |
0655fa4d | 1402 | |
3712be3f | 1403 | #if USE_SSL |
1404 | ||
e0c0d54c | 1405 | void |
08097970 | 1406 | ClientHttpRequest::sslBumpNeed(Ssl::BumpMode mode) |
e0c0d54c | 1407 | { |
caf3666d | 1408 | debugs(83, 3, HERE << "sslBump required: "<< Ssl::bumpMode(mode)); |
08097970 | 1409 | sslBumpNeed_ = mode; |
3712be3f | 1410 | } |
1411 | ||
1412 | // called when comm_write has completed | |
1413 | static void | |
e0d28505 | 1414 | SslBumpEstablish(const Comm::ConnectionPointer &, char *, size_t, comm_err_t errflag, int, void *data) |
3712be3f | 1415 | { |
1416 | ClientHttpRequest *r = static_cast<ClientHttpRequest*>(data); | |
1417 | debugs(85, 5, HERE << "responded to CONNECT: " << r << " ? " << errflag); | |
1418 | ||
1419 | assert(r && cbdataReferenceValid(r)); | |
1420 | r->sslBumpEstablish(errflag); | |
1421 | } | |
1422 | ||
1423 | void | |
1424 | ClientHttpRequest::sslBumpEstablish(comm_err_t errflag) | |
1425 | { | |
1426 | // Bail out quickly on COMM_ERR_CLOSING - close handlers will tidy up | |
1427 | if (errflag == COMM_ERR_CLOSING) | |
1428 | return; | |
1429 | ||
1430 | if (errflag) { | |
1fa35be8 | 1431 | debugs(85, 3, HERE << "CONNECT response failure in SslBump: " << errflag); |
bbc83914 | 1432 | getConn()->clientConnection->close(); |
3712be3f | 1433 | return; |
1434 | } | |
1435 | ||
40d8be97 AR |
1436 | // We lack HttpReply which logRequest() uses to log the status code. |
1437 | // TODO: Use HttpReply instead of the "200 Connection established" string. | |
71cae389 | 1438 | al->http.code = 200; |
40d8be97 | 1439 | |
21512911 CT |
1440 | #if USE_AUTH |
1441 | // Preserve authentication info for the ssl-bumped request | |
1442 | if (request->auth_user_request != NULL) | |
1443 | getConn()->auth_user_request = request->auth_user_request; | |
1444 | #endif | |
03f00a11 | 1445 | |
08097970 AR |
1446 | assert(sslBumpNeeded()); |
1447 | getConn()->switchToHttps(request, sslBumpNeed_); | |
3712be3f | 1448 | } |
1449 | ||
1450 | void | |
1451 | ClientHttpRequest::sslBumpStart() | |
1452 | { | |
08097970 AR |
1453 | debugs(85, 5, HERE << "Confirming " << Ssl::bumpMode(sslBumpNeed_) << |
1454 | "-bumped CONNECT tunnel on FD " << getConn()->clientConnection); | |
1455 | getConn()->sslBumpMode = sslBumpNeed_; | |
3712be3f | 1456 | |
08097970 | 1457 | // send an HTTP 200 response to kick client SSL negotiation |
3712be3f | 1458 | // TODO: Unify with tunnel.cc and add a Server(?) header |
b0388924 | 1459 | static const char *const conn_established = "HTTP/1.1 200 Connection established\r\n\r\n"; |
ec41b64c AJ |
1460 | AsyncCall::Pointer call = commCbCall(85, 5, "ClientSocketContext::sslBumpEstablish", |
1461 | CommIoCbPtrFun(&SslBumpEstablish, this)); | |
73c36fd9 | 1462 | Comm::Write(getConn()->clientConnection, conn_established, strlen(conn_established), call, NULL); |
3712be3f | 1463 | } |
1464 | ||
1465 | #endif | |
1466 | ||
0655fa4d | 1467 | bool |
1468 | ClientHttpRequest::gotEnough() const | |
1469 | { | |
86a2f789 | 1470 | /** TODO: should be querying the stream. */ |
7173d5b0 | 1471 | int64_t contentLength = |
06a5ae20 | 1472 | memObject()->getReply()->bodySize(request->method); |
0655fa4d | 1473 | assert(contentLength >= 0); |
1474 | ||
1475 | if (out.offset < contentLength) | |
1476 | return false; | |
1477 | ||
1478 | return true; | |
1479 | } | |
1480 | ||
86a2f789 | 1481 | void |
1482 | ClientHttpRequest::storeEntry(StoreEntry *newEntry) | |
1483 | { | |
1484 | entry_ = newEntry; | |
1485 | } | |
1486 | ||
0976f8db | 1487 | void |
1488 | ClientHttpRequest::loggingEntry(StoreEntry *newEntry) | |
1489 | { | |
1490 | if (loggingEntry_) | |
97b5e68f | 1491 | loggingEntry_->unlock(); |
0976f8db | 1492 | |
1493 | loggingEntry_ = newEntry; | |
1494 | ||
1495 | if (loggingEntry_) | |
3d0ac046 | 1496 | loggingEntry_->lock(); |
0976f8db | 1497 | } |
86a2f789 | 1498 | |
de31d06f | 1499 | /* |
1500 | * doCallouts() - This function controls the order of "callout" | |
1501 | * executions, including non-blocking access control checks, the | |
1502 | * redirector, and ICAP. Previously, these callouts were chained | |
1503 | * together such that "clientAccessCheckDone()" would call | |
1504 | * "clientRedirectStart()" and so on. | |
1505 | * | |
1506 | * The ClientRequestContext (aka calloutContext) class holds certain | |
1507 | * state data for the callout/callback operations. Previously | |
1508 | * ClientHttpRequest would sort of hand off control to ClientRequestContext | |
1509 | * for a short time. ClientRequestContext would then delete itself | |
1510 | * and pass control back to ClientHttpRequest when all callouts | |
1511 | * were finished. | |
1512 | * | |
1513 | * This caused some problems for ICAP because we want to make the | |
1514 | * ICAP callout after checking ACLs, but before checking the no_cache | |
1515 | * list. We can't stuff the ICAP state into the ClientRequestContext | |
1516 | * class because we still need the ICAP state after ClientRequestContext | |
1517 | * goes away. | |
1518 | * | |
1519 | * Note that ClientRequestContext is created before the first call | |
1520 | * to doCallouts(). | |
1521 | * | |
1522 | * If one of the callouts notices that ClientHttpRequest is no | |
1523 | * longer valid, it should call cbdataReferenceDone() so that | |
1524 | * ClientHttpRequest's reference count goes to zero and it will get | |
1525 | * deleted. ClientHttpRequest will then delete ClientRequestContext. | |
1526 | * | |
1527 | * Note that we set the _done flags here before actually starting | |
1528 | * the callout. This is strictly for convenience. | |
1529 | */ | |
1530 | ||
82afb125 FC |
1531 | tos_t aclMapTOS (acl_tos * head, ACLChecklist * ch); |
1532 | nfmark_t aclMapNfmark (acl_nfmark * head, ACLChecklist * ch); | |
057f5854 | 1533 | |
de31d06f | 1534 | void |
1535 | ClientHttpRequest::doCallouts() | |
1536 | { | |
1537 | assert(calloutContext); | |
1538 | ||
6fca33e0 | 1539 | /*Save the original request for logging purposes*/ |
41ebd397 CT |
1540 | if (!calloutContext->http->al->request) |
1541 | calloutContext->http->al->request = HTTPMSGLOCK(request); | |
6fca33e0 | 1542 | |
38450a50 | 1543 | if (!calloutContext->error) { |
87f237a9 | 1544 | // CVE-2009-0801: verify the Host: header is consistent with other known details. |
38450a50 CT |
1545 | if (!calloutContext->host_header_verify_done) { |
1546 | debugs(83, 3, HERE << "Doing calloutContext->hostHeaderVerify()"); | |
1547 | calloutContext->host_header_verify_done = true; | |
1548 | calloutContext->hostHeaderVerify(); | |
1549 | return; | |
1550 | } | |
fe97983f | 1551 | |
38450a50 CT |
1552 | if (!calloutContext->http_access_done) { |
1553 | debugs(83, 3, HERE << "Doing calloutContext->clientAccessCheck()"); | |
1554 | calloutContext->http_access_done = true; | |
1555 | calloutContext->clientAccessCheck(); | |
1556 | return; | |
1557 | } | |
de31d06f | 1558 | |
a83c6ed6 | 1559 | #if USE_ADAPTATION |
38450a50 CT |
1560 | if (!calloutContext->adaptation_acl_check_done) { |
1561 | calloutContext->adaptation_acl_check_done = true; | |
1562 | if (Adaptation::AccessCheck::Start( | |
87f237a9 A |
1563 | Adaptation::methodReqmod, Adaptation::pointPreCache, |
1564 | request, NULL, this)) | |
38450a50 CT |
1565 | return; // will call callback |
1566 | } | |
de31d06f | 1567 | #endif |
1568 | ||
38450a50 CT |
1569 | if (!calloutContext->redirect_done) { |
1570 | calloutContext->redirect_done = true; | |
1571 | assert(calloutContext->redirect_state == REDIRECT_NONE); | |
de31d06f | 1572 | |
38450a50 CT |
1573 | if (Config.Program.redirect) { |
1574 | debugs(83, 3, HERE << "Doing calloutContext->clientRedirectStart()"); | |
1575 | calloutContext->redirect_state = REDIRECT_PENDING; | |
1576 | calloutContext->clientRedirectStart(); | |
1577 | return; | |
1578 | } | |
de31d06f | 1579 | } |
de31d06f | 1580 | |
38450a50 CT |
1581 | if (!calloutContext->adapted_http_access_done) { |
1582 | debugs(83, 3, HERE << "Doing calloutContext->clientAccessCheck2()"); | |
1583 | calloutContext->adapted_http_access_done = true; | |
1584 | calloutContext->clientAccessCheck2(); | |
1585 | return; | |
1586 | } | |
533493da | 1587 | |
38450a50 CT |
1588 | if (!calloutContext->interpreted_req_hdrs) { |
1589 | debugs(83, 3, HERE << "Doing clientInterpretRequestHeaders()"); | |
1590 | calloutContext->interpreted_req_hdrs = 1; | |
1591 | clientInterpretRequestHeaders(this); | |
1592 | } | |
57abaac0 | 1593 | |
38450a50 CT |
1594 | if (!calloutContext->no_cache_done) { |
1595 | calloutContext->no_cache_done = true; | |
de31d06f | 1596 | |
45e5102d | 1597 | if (Config.accessList.noCache && request->flags.cachable) { |
38450a50 CT |
1598 | debugs(83, 3, HERE << "Doing calloutContext->checkNoCache()"); |
1599 | calloutContext->checkNoCache(); | |
1600 | return; | |
1601 | } | |
de31d06f | 1602 | } |
38450a50 | 1603 | } // if !calloutContext->error |
de31d06f | 1604 | |
425de4c8 AJ |
1605 | if (!calloutContext->tosToClientDone) { |
1606 | calloutContext->tosToClientDone = true; | |
73c36fd9 | 1607 | if (getConn() != NULL && Comm::IsConnOpen(getConn()->clientConnection)) { |
c0941a6a | 1608 | ACLFilledChecklist ch(NULL, request, NULL); |
057f5854 | 1609 | ch.src_addr = request->client_addr; |
1610 | ch.my_addr = request->my_addr; | |
425de4c8 | 1611 | tos_t tos = aclMapTOS(Ip::Qos::TheConfig.tosToClient, &ch); |
3712be3f | 1612 | if (tos) |
73c36fd9 | 1613 | Ip::Qos::setSockTos(getConn()->clientConnection, tos); |
425de4c8 AJ |
1614 | } |
1615 | } | |
1616 | ||
1617 | if (!calloutContext->nfmarkToClientDone) { | |
1618 | calloutContext->nfmarkToClientDone = true; | |
73c36fd9 | 1619 | if (getConn() != NULL && Comm::IsConnOpen(getConn()->clientConnection)) { |
425de4c8 AJ |
1620 | ACLFilledChecklist ch(NULL, request, NULL); |
1621 | ch.src_addr = request->client_addr; | |
1622 | ch.my_addr = request->my_addr; | |
1623 | nfmark_t mark = aclMapNfmark(Ip::Qos::TheConfig.nfmarkToClient, &ch); | |
1624 | if (mark) | |
73c36fd9 | 1625 | Ip::Qos::setSockNfmark(getConn()->clientConnection, mark); |
3712be3f | 1626 | } |
057f5854 | 1627 | } |
1628 | ||
d2565320 | 1629 | #if USE_SSL |
7a957a93 AR |
1630 | // We need to check for SslBump even if the calloutContext->error is set |
1631 | // because bumping may require delaying the error until after CONNECT. | |
e0c0d54c CT |
1632 | if (!calloutContext->sslBumpCheckDone) { |
1633 | calloutContext->sslBumpCheckDone = true; | |
1634 | if (calloutContext->sslBumpAccessCheck()) | |
1635 | return; | |
1636 | /* else no ssl bump required*/ | |
1637 | } | |
d2565320 | 1638 | #endif |
e0c0d54c | 1639 | |
2bd84e5f CT |
1640 | if (calloutContext->error) { |
1641 | const char *uri = urlCanonical(request); | |
1642 | StoreEntry *e= storeCreateEntry(uri, uri, request->flags, request->method); | |
1643 | #if USE_SSL | |
08097970 | 1644 | if (sslBumpNeeded()) { |
2bd84e5f CT |
1645 | // set final error but delay sending until we bump |
1646 | Ssl::ServerBump *srvBump = new Ssl::ServerBump(request, e); | |
1647 | errorAppendEntry(e, calloutContext->error); | |
1648 | calloutContext->error = NULL; | |
1649 | getConn()->setServerBump(srvBump); | |
1650 | e->unlock(); | |
87f237a9 | 1651 | } else |
2bd84e5f CT |
1652 | #endif |
1653 | { | |
7a957a93 | 1654 | // send the error to the client now |
2bd84e5f CT |
1655 | clientStreamNode *node = (clientStreamNode *)client_stream.tail->prev->data; |
1656 | clientReplyContext *repContext = dynamic_cast<clientReplyContext *>(node->data.getRaw()); | |
1657 | assert (repContext); | |
1658 | repContext->setReplyToStoreEntry(e); | |
1659 | errorAppendEntry(e, calloutContext->error); | |
1660 | calloutContext->error = NULL; | |
1661 | if (calloutContext->readNextRequest) | |
1662 | getConn()->flags.readMore = true; // resume any pipeline reads. | |
1663 | node = (clientStreamNode *)client_stream.tail->data; | |
1664 | clientStreamRead(node, this, node->readBuffer); | |
1665 | e->unlock(); | |
2bd84e5f CT |
1666 | return; |
1667 | } | |
1668 | } | |
1669 | ||
de31d06f | 1670 | cbdataReferenceDone(calloutContext->http); |
1671 | delete calloutContext; | |
1672 | calloutContext = NULL; | |
de31d06f | 1673 | #if HEADERS_LOG |
1674 | ||
1675 | headersLog(0, 1, request->method, request); | |
1676 | #endif | |
1677 | ||
58d7150d | 1678 | debugs(83, 3, HERE << "calling processRequest()"); |
de31d06f | 1679 | processRequest(); |
3ff65596 AR |
1680 | |
1681 | #if ICAP_CLIENT | |
1682 | Adaptation::Icap::History::Pointer ih = request->icapHistory(); | |
1683 | if (ih != NULL) | |
1684 | ih->logType = logType; | |
1685 | #endif | |
de31d06f | 1686 | } |
1687 | ||
32d002cb | 1688 | #if !_USE_INLINE_ |
86a2f789 | 1689 | #include "client_side_request.cci" |
1690 | #endif | |
de31d06f | 1691 | |
a83c6ed6 | 1692 | #if USE_ADAPTATION |
a22e6cd3 AR |
1693 | /// Initiate an asynchronous adaptation transaction which will call us back. |
1694 | void | |
1695 | ClientHttpRequest::startAdaptation(const Adaptation::ServiceGroupPointer &g) | |
3b299123 | 1696 | { |
a22e6cd3 | 1697 | debugs(85, 3, HERE << "adaptation needed for " << this); |
a83c6ed6 AR |
1698 | assert(!virginHeadSource); |
1699 | assert(!adaptedBodySource); | |
a22e6cd3 | 1700 | virginHeadSource = initiateAdaptation( |
4cb2536f | 1701 | new Adaptation::Iterator(request, NULL, g)); |
a83c6ed6 | 1702 | |
e1381638 | 1703 | // we could try to guess whether we can bypass this adaptation |
a22e6cd3 | 1704 | // initiation failure, but it should not really happen |
4299f876 | 1705 | Must(initiated(virginHeadSource)); |
de31d06f | 1706 | } |
1707 | ||
1708 | void | |
3af10ac0 | 1709 | ClientHttpRequest::noteAdaptationAnswer(const Adaptation::Answer &answer) |
de31d06f | 1710 | { |
de31d06f | 1711 | assert(cbdataReferenceValid(this)); // indicates bug |
3af10ac0 AR |
1712 | clearAdaptation(virginHeadSource); |
1713 | assert(!adaptedBodySource); | |
1714 | ||
1715 | switch (answer.kind) { | |
1716 | case Adaptation::Answer::akForward: | |
1717 | handleAdaptedHeader(answer.message); | |
1718 | break; | |
1719 | ||
1720 | case Adaptation::Answer::akBlock: | |
1721 | handleAdaptationBlock(answer); | |
1722 | break; | |
1723 | ||
1724 | case Adaptation::Answer::akError: | |
1725 | handleAdaptationFailure(ERR_DETAIL_CLT_REQMOD_ABORT, !answer.final); | |
1726 | break; | |
1727 | } | |
1728 | } | |
1729 | ||
1730 | void | |
ec4d1a1d | 1731 | ClientHttpRequest::handleAdaptedHeader(HttpMsg *msg) |
3af10ac0 | 1732 | { |
5f8252d2 | 1733 | assert(msg); |
1734 | ||
b044675d | 1735 | if (HttpRequest *new_req = dynamic_cast<HttpRequest*>(msg)) { |
200ac359 | 1736 | /* |
5f8252d2 | 1737 | * Replace the old request with the new request. |
200ac359 | 1738 | */ |
6dd9f4bd | 1739 | HTTPMSGUNLOCK(request); |
1740 | request = HTTPMSGLOCK(new_req); | |
200ac359 | 1741 | /* |
1742 | * Store the new URI for logging | |
1743 | */ | |
1744 | xfree(uri); | |
1745 | uri = xstrdup(urlCanonical(request)); | |
1746 | setLogUri(this, urlCanonicalClean(request)); | |
914b89a2 | 1747 | assert(request->method.id()); |
b044675d | 1748 | } else if (HttpReply *new_rep = dynamic_cast<HttpReply*>(msg)) { |
1749 | debugs(85,3,HERE << "REQMOD reply is HTTP reply"); | |
1750 | ||
5f8252d2 | 1751 | // subscribe to receive reply body |
1752 | if (new_rep->body_pipe != NULL) { | |
a83c6ed6 | 1753 | adaptedBodySource = new_rep->body_pipe; |
d222a56c HN |
1754 | int consumer_ok = adaptedBodySource->setConsumerIfNotLate(this); |
1755 | assert(consumer_ok); | |
5f8252d2 | 1756 | } |
1757 | ||
b044675d | 1758 | clientStreamNode *node = (clientStreamNode *)client_stream.tail->prev->data; |
1759 | clientReplyContext *repContext = dynamic_cast<clientReplyContext *>(node->data.getRaw()); | |
1760 | repContext->createStoreEntry(request->method, request->flags); | |
1761 | ||
1762 | EBIT_CLR(storeEntry()->flags, ENTRY_FWD_HDR_WAIT); | |
1763 | request_satisfaction_mode = true; | |
1764 | request_satisfaction_offset = 0; | |
1765 | storeEntry()->replaceHttpReply(new_rep); | |
97ae5196 | 1766 | storeEntry()->timestampsSet(); |
cb4c4288 | 1767 | |
a83c6ed6 | 1768 | if (!adaptedBodySource) // no body |
cb4c4288 | 1769 | storeEntry()->complete(); |
b044675d | 1770 | clientGetMoreData(node, this); |
200ac359 | 1771 | } |
de31d06f | 1772 | |
5f8252d2 | 1773 | // we are done with getting headers (but may be receiving body) |
a83c6ed6 | 1774 | clearAdaptation(virginHeadSource); |
5f8252d2 | 1775 | |
b044675d | 1776 | if (!request_satisfaction_mode) |
1777 | doCallouts(); | |
de31d06f | 1778 | } |
1779 | ||
1780 | void | |
3af10ac0 | 1781 | ClientHttpRequest::handleAdaptationBlock(const Adaptation::Answer &answer) |
de31d06f | 1782 | { |
3af10ac0 AR |
1783 | request->detailError(ERR_ACCESS_DENIED, ERR_DETAIL_REQMOD_BLOCK); |
1784 | AclMatchedName = answer.ruleId.termedBuf(); | |
1785 | assert(calloutContext); | |
1786 | calloutContext->clientAccessCheckDone(ACCESS_DENIED); | |
1787 | AclMatchedName = NULL; | |
de31d06f | 1788 | } |
1789 | ||
0ad2b63b CT |
1790 | void |
1791 | ClientHttpRequest::resumeBodyStorage() | |
1792 | { | |
e83cdc25 | 1793 | if (!adaptedBodySource) |
0ad2b63b CT |
1794 | return; |
1795 | ||
1796 | noteMoreBodyDataAvailable(adaptedBodySource); | |
1797 | } | |
1798 | ||
de31d06f | 1799 | void |
1cf238db | 1800 | ClientHttpRequest::noteMoreBodyDataAvailable(BodyPipe::Pointer) |
de31d06f | 1801 | { |
5f8252d2 | 1802 | assert(request_satisfaction_mode); |
a83c6ed6 | 1803 | assert(adaptedBodySource != NULL); |
5f8252d2 | 1804 | |
0ad2b63b | 1805 | if (size_t contentSize = adaptedBodySource->buf().contentSize()) { |
4dc2b072 | 1806 | const size_t spaceAvailable = storeEntry()->bytesWanted(Range<size_t>(0,contentSize)); |
0ad2b63b CT |
1807 | |
1808 | if (spaceAvailable < contentSize ) { | |
1809 | // No or partial body data consuming | |
1810 | typedef NullaryMemFunT<ClientHttpRequest> Dialer; | |
1811 | AsyncCall::Pointer call = asyncCall(93, 5, "ClientHttpRequest::resumeBodyStorage", | |
1812 | Dialer(this, &ClientHttpRequest::resumeBodyStorage)); | |
1813 | storeEntry()->deferProducer(call); | |
1814 | } | |
1815 | ||
4dc2b072 | 1816 | if (!spaceAvailable) |
0ad2b63b CT |
1817 | return; |
1818 | ||
1819 | if (spaceAvailable < contentSize ) | |
1820 | contentSize = spaceAvailable; | |
1821 | ||
a83c6ed6 | 1822 | BodyPipeCheckout bpc(*adaptedBodySource); |
0ad2b63b | 1823 | const StoreIOBuffer ioBuf(&bpc.buf, request_satisfaction_offset, contentSize); |
5f8252d2 | 1824 | storeEntry()->write(ioBuf); |
0ad2b63b CT |
1825 | // assume StoreEntry::write() writes the entire ioBuf |
1826 | request_satisfaction_offset += ioBuf.length; | |
4ce0e99b | 1827 | bpc.buf.consume(contentSize); |
5f8252d2 | 1828 | bpc.checkIn(); |
1829 | } | |
1830 | ||
a83c6ed6 | 1831 | if (adaptedBodySource->exhausted()) |
5f8252d2 | 1832 | endRequestSatisfaction(); |
1833 | // else wait for more body data | |
de31d06f | 1834 | } |
1835 | ||
1836 | void | |
1cf238db | 1837 | ClientHttpRequest::noteBodyProductionEnded(BodyPipe::Pointer) |
de31d06f | 1838 | { |
a83c6ed6 | 1839 | assert(!virginHeadSource); |
0ad2b63b CT |
1840 | // should we end request satisfaction now? |
1841 | if (adaptedBodySource != NULL && adaptedBodySource->exhausted()) | |
5f8252d2 | 1842 | endRequestSatisfaction(); |
5f8252d2 | 1843 | } |
3b299123 | 1844 | |
5f8252d2 | 1845 | void |
26ac0430 AJ |
1846 | ClientHttpRequest::endRequestSatisfaction() |
1847 | { | |
5f8252d2 | 1848 | debugs(85,4, HERE << this << " ends request satisfaction"); |
1849 | assert(request_satisfaction_mode); | |
a83c6ed6 | 1850 | stopConsumingFrom(adaptedBodySource); |
3b299123 | 1851 | |
5f8252d2 | 1852 | // TODO: anything else needed to end store entry formation correctly? |
1853 | storeEntry()->complete(); | |
1854 | } | |
de31d06f | 1855 | |
5f8252d2 | 1856 | void |
1cf238db | 1857 | ClientHttpRequest::noteBodyProducerAborted(BodyPipe::Pointer) |
5f8252d2 | 1858 | { |
a83c6ed6 AR |
1859 | assert(!virginHeadSource); |
1860 | stopConsumingFrom(adaptedBodySource); | |
eae3a9a6 AR |
1861 | |
1862 | debugs(85,3, HERE << "REQMOD body production failed"); | |
1863 | if (request_satisfaction_mode) { // too late to recover or serve an error | |
1864 | request->detailError(ERR_ICAP_FAILURE, ERR_DETAIL_CLT_REQMOD_RESP_BODY); | |
73c36fd9 | 1865 | const Comm::ConnectionPointer c = getConn()->clientConnection; |
e7cea0ed AJ |
1866 | Must(Comm::IsConnOpen(c)); |
1867 | c->close(); // drastic, but we may be writing a response already | |
eae3a9a6 AR |
1868 | } else { |
1869 | handleAdaptationFailure(ERR_DETAIL_CLT_REQMOD_REQ_BODY); | |
1870 | } | |
5f8252d2 | 1871 | } |
3b299123 | 1872 | |
5f8252d2 | 1873 | void |
64b66b76 | 1874 | ClientHttpRequest::handleAdaptationFailure(int errDetail, bool bypassable) |
5f8252d2 | 1875 | { |
a83c6ed6 | 1876 | debugs(85,3, HERE << "handleAdaptationFailure(" << bypassable << ")"); |
3b299123 | 1877 | |
5f8252d2 | 1878 | const bool usedStore = storeEntry() && !storeEntry()->isEmpty(); |
1879 | const bool usedPipe = request->body_pipe != NULL && | |
26ac0430 | 1880 | request->body_pipe->consumedSize() > 0; |
3b299123 | 1881 | |
9d4d7c5e | 1882 | if (bypassable && !usedStore && !usedPipe) { |
1883 | debugs(85,3, HERE << "ICAP REQMOD callout failed, bypassing: " << calloutContext); | |
5f8252d2 | 1884 | if (calloutContext) |
1885 | doCallouts(); | |
1886 | return; | |
1887 | } | |
3b299123 | 1888 | |
5f8252d2 | 1889 | debugs(85,3, HERE << "ICAP REQMOD callout failed, responding with error"); |
3b299123 | 1890 | |
5f8252d2 | 1891 | clientStreamNode *node = (clientStreamNode *)client_stream.tail->prev->data; |
1892 | clientReplyContext *repContext = dynamic_cast<clientReplyContext *>(node->data.getRaw()); | |
1893 | assert(repContext); | |
de31d06f | 1894 | |
26ac0430 | 1895 | // The original author of the code also wanted to pass an errno to |
5f8252d2 | 1896 | // setReplyToError, but it seems unlikely that the errno reflects the |
1897 | // true cause of the error at this point, so I did not pass it. | |
2bd84e5f CT |
1898 | if (calloutContext) { |
1899 | Ip::Address noAddr; | |
1900 | noAddr.SetNoAddr(); | |
1901 | ConnStateData * c = getConn(); | |
1902 | calloutContext->error = clientBuildError(ERR_ICAP_FAILURE, HTTP_INTERNAL_SERVER_ERROR, | |
87f237a9 A |
1903 | NULL, |
1904 | c != NULL ? c->clientConnection->remote : noAddr, | |
1905 | request | |
1906 | ); | |
79fc6915 | 1907 | #if USE_AUTH |
87f237a9 | 1908 | calloutContext->error->auth_user_request = |
2bd84e5f | 1909 | c != NULL && c->auth_user_request != NULL ? c->auth_user_request : request->auth_user_request; |
79fc6915 | 1910 | #endif |
129fe2a1 | 1911 | calloutContext->error->detailError(errDetail); |
2bd84e5f CT |
1912 | calloutContext->readNextRequest = true; |
1913 | c->expectNoForwarding(); | |
1914 | doCallouts(); | |
1915 | } | |
1916 | //else if(calloutContext == NULL) is it possible? | |
de31d06f | 1917 | } |
1918 | ||
1919 | #endif |