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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" |
27bc2077 AJ |
46 | #include "client_side.h" |
47 | #include "client_side_reply.h" | |
48 | #include "client_side_request.h" | |
602d9612 | 49 | #include "ClientRequestContext.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" | |
425de4c8 | 65 | #include "ip/QosConfig.h" |
602d9612 | 66 | #include "ipcache.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 | |
cb4f4424 | 91 | #if USE_OPENSSL |
2bd84e5f | 92 | #include "ssl/ServerBump.h" |
602d9612 | 93 | #include "ssl/support.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 | ||
edce4d98 | 110 | /* Local functions */ |
edce4d98 | 111 | /* other */ |
2efeb0b7 | 112 | static void clientAccessCheckDoneWrapper(allow_t, void *); |
cb4f4424 | 113 | #if USE_OPENSSL |
2efeb0b7 | 114 | static void sslBumpAccessCheckDoneWrapper(allow_t, void *); |
e0c0d54c | 115 | #endif |
59a1efb2 | 116 | static int clientHierarchical(ClientHttpRequest * http); |
117 | static void clientInterpretRequestHeaders(ClientHttpRequest * http); | |
e166785a | 118 | static HLPCB clientRedirectDoneWrapper; |
a8a0b1c2 | 119 | static HLPCB clientStoreIdDoneWrapper; |
2efeb0b7 | 120 | static void checkNoCacheDoneWrapper(allow_t, void *); |
82afb125 FC |
121 | SQUIDCEXTERN CSR clientGetMoreData; |
122 | SQUIDCEXTERN CSS clientReplyStatus; | |
123 | SQUIDCEXTERN CSD clientReplyDetach; | |
528b2c61 | 124 | static void checkFailureRatio(err_type, hier_code); |
edce4d98 | 125 | |
8e2745f4 | 126 | ClientRequestContext::~ClientRequestContext() |
127 | { | |
de31d06f | 128 | /* |
a546b04b | 129 | * Release our "lock" on our parent, ClientHttpRequest, if we |
130 | * still have one | |
de31d06f | 131 | */ |
a546b04b | 132 | |
133 | if (http) | |
134 | cbdataReferenceDone(http); | |
62e76326 | 135 | |
2bd84e5f | 136 | delete error; |
5f8252d2 | 137 | debugs(85,3, HERE << this << " ClientRequestContext destructed"); |
8e2745f4 | 138 | } |
139 | ||
a8a0b1c2 | 140 | ClientRequestContext::ClientRequestContext(ClientHttpRequest *anHttp) : http(cbdataReference(anHttp)), acl_checklist (NULL), redirect_state (REDIRECT_NONE), store_id_state(REDIRECT_NONE),error(NULL), readNextRequest(false) |
edce4d98 | 141 | { |
57abaac0 | 142 | http_access_done = false; |
143 | redirect_done = false; | |
d06e17ea | 144 | redirect_fail_count = 0; |
a8a0b1c2 EC |
145 | store_id_done = false; |
146 | store_id_fail_count = 0; | |
57abaac0 | 147 | no_cache_done = false; |
148 | interpreted_req_hdrs = false; | |
cb4f4424 | 149 | #if USE_OPENSSL |
e0c0d54c CT |
150 | sslBumpCheckDone = false; |
151 | #endif | |
0b86805b | 152 | debugs(85,3, HERE << this << " ClientRequestContext constructed"); |
edce4d98 | 153 | } |
154 | ||
528b2c61 | 155 | CBDATA_CLASS_INIT(ClientHttpRequest); |
8e2745f4 | 156 | |
26ac0430 | 157 | ClientHttpRequest::ClientHttpRequest(ConnStateData * aConn) : |
a83c6ed6 | 158 | #if USE_ADAPTATION |
26ac0430 | 159 | AsyncJob("ClientHttpRequest"), |
1cf238db | 160 | #endif |
26ac0430 | 161 | loggingEntry_(NULL) |
528b2c61 | 162 | { |
a0355e95 | 163 | setConn(aConn); |
41ebd397 | 164 | al = new AccessLogEntry; |
af0ded40 | 165 | al->cache.start_time = current_time; |
41ebd397 | 166 | al->tcpClient = clientConnection = aConn->clientConnection; |
fa720bfb | 167 | al->cache.port = aConn->port; |
d4806c91 CT |
168 | al->cache.caddr = aConn->log_addr; |
169 | ||
cb4f4424 | 170 | #if USE_OPENSSL |
f4698e0b CT |
171 | if (aConn->clientConnection != NULL && aConn->clientConnection->isOpen()) { |
172 | if (SSL *ssl = fd_table[aConn->clientConnection->fd].ssl) | |
173 | al->cache.sslClientCert.reset(SSL_get_peer_certificate(ssl)); | |
174 | } | |
175 | #endif | |
a0355e95 | 176 | dlinkAdd(this, &active, &ClientActiveRequests); |
a83c6ed6 | 177 | #if USE_ADAPTATION |
b044675d | 178 | request_satisfaction_mode = false; |
179 | #endif | |
cb4f4424 | 180 | #if USE_OPENSSL |
08097970 | 181 | sslBumpNeed_ = Ssl::bumpEnd; |
e0c0d54c | 182 | #endif |
528b2c61 | 183 | } |
184 | ||
0655fa4d | 185 | /* |
186 | * returns true if client specified that the object must come from the cache | |
187 | * without contacting origin server | |
188 | */ | |
189 | bool | |
190 | ClientHttpRequest::onlyIfCached()const | |
191 | { | |
192 | assert(request); | |
193 | return request->cache_control && | |
4ce6e3b5 | 194 | request->cache_control->onlyIfCached(); |
0655fa4d | 195 | } |
196 | ||
77aacca5 | 197 | /** |
528b2c61 | 198 | * This function is designed to serve a fairly specific purpose. |
199 | * Occasionally our vBNS-connected caches can talk to each other, but not | |
200 | * the rest of the world. Here we try to detect frequent failures which | |
201 | * make the cache unusable (e.g. DNS lookup and connect() failures). If | |
202 | * the failure:success ratio goes above 1.0 then we go into "hit only" | |
203 | * mode where we only return UDP_HIT or UDP_MISS_NOFETCH. Neighbors | |
204 | * will only fetch HITs from us if they are using the ICP protocol. We | |
205 | * stay in this mode for 5 minutes. | |
26ac0430 | 206 | * |
528b2c61 | 207 | * Duane W., Sept 16, 1996 |
208 | */ | |
528b2c61 | 209 | static void |
210 | checkFailureRatio(err_type etype, hier_code hcode) | |
211 | { | |
77aacca5 AJ |
212 | // Can be set at compile time with -D compiler flag |
213 | #ifndef FAILURE_MODE_TIME | |
214 | #define FAILURE_MODE_TIME 300 | |
215 | #endif | |
216 | ||
8d74a311 AJ |
217 | if (hcode == HIER_NONE) |
218 | return; | |
219 | ||
220 | // don't bother when ICP is disabled. | |
221 | if (Config.Port.icp <= 0) | |
222 | return; | |
223 | ||
528b2c61 | 224 | static double magic_factor = 100.0; |
225 | double n_good; | |
226 | double n_bad; | |
62e76326 | 227 | |
528b2c61 | 228 | n_good = magic_factor / (1.0 + request_failure_ratio); |
62e76326 | 229 | |
528b2c61 | 230 | n_bad = magic_factor - n_good; |
62e76326 | 231 | |
528b2c61 | 232 | switch (etype) { |
62e76326 | 233 | |
528b2c61 | 234 | case ERR_DNS_FAIL: |
62e76326 | 235 | |
528b2c61 | 236 | case ERR_CONNECT_FAIL: |
3712be3f | 237 | case ERR_SECURE_CONNECT_FAIL: |
62e76326 | 238 | |
528b2c61 | 239 | case ERR_READ_ERROR: |
5086523e | 240 | ++n_bad; |
62e76326 | 241 | break; |
242 | ||
528b2c61 | 243 | default: |
5086523e | 244 | ++n_good; |
528b2c61 | 245 | } |
62e76326 | 246 | |
528b2c61 | 247 | request_failure_ratio = n_bad / n_good; |
62e76326 | 248 | |
528b2c61 | 249 | if (hit_only_mode_until > squid_curtime) |
62e76326 | 250 | return; |
251 | ||
528b2c61 | 252 | if (request_failure_ratio < 1.0) |
62e76326 | 253 | return; |
254 | ||
77aacca5 | 255 | debugs(33, DBG_CRITICAL, "WARNING: Failure Ratio at "<< std::setw(4)<< |
bf8fe701 | 256 | std::setprecision(3) << request_failure_ratio); |
62e76326 | 257 | |
8d74a311 | 258 | debugs(33, DBG_CRITICAL, "WARNING: ICP going into HIT-only mode for " << |
bf8fe701 | 259 | FAILURE_MODE_TIME / 60 << " minutes..."); |
62e76326 | 260 | |
528b2c61 | 261 | hit_only_mode_until = squid_curtime + FAILURE_MODE_TIME; |
62e76326 | 262 | |
528b2c61 | 263 | request_failure_ratio = 0.8; /* reset to something less than 1.0 */ |
264 | } | |
265 | ||
266 | ClientHttpRequest::~ClientHttpRequest() | |
267 | { | |
bf8fe701 | 268 | debugs(33, 3, "httpRequestFree: " << uri); |
72bdee4c | 269 | PROF_start(httpRequestFree); |
62e76326 | 270 | |
5f8252d2 | 271 | // Even though freeResources() below may destroy the request, |
272 | // we no longer set request->body_pipe to NULL here | |
273 | // because we did not initiate that pipe (ConnStateData did) | |
62e76326 | 274 | |
528b2c61 | 275 | /* the ICP check here was erroneous |
26ac0430 | 276 | * - StoreEntry::releaseRequest was always called if entry was valid |
528b2c61 | 277 | */ |
278 | assert(logType < LOG_TYPE_MAX); | |
9ce7856a | 279 | |
528b2c61 | 280 | logRequest(); |
9ce7856a | 281 | |
0976f8db | 282 | loggingEntry(NULL); |
283 | ||
528b2c61 | 284 | if (request) |
41ebd397 | 285 | checkFailureRatio(request->errType, al->hier.code); |
62e76326 | 286 | |
528b2c61 | 287 | freeResources(); |
62e76326 | 288 | |
a83c6ed6 AR |
289 | #if USE_ADAPTATION |
290 | announceInitiatorAbort(virginHeadSource); | |
9d4d7c5e | 291 | |
a83c6ed6 AR |
292 | if (adaptedBodySource != NULL) |
293 | stopConsumingFrom(adaptedBodySource); | |
de31d06f | 294 | #endif |
9ce7856a | 295 | |
de31d06f | 296 | if (calloutContext) |
297 | delete calloutContext; | |
298 | ||
be364179 AJ |
299 | clientConnection = NULL; |
300 | ||
26ac0430 AJ |
301 | if (conn_) |
302 | cbdataReferenceDone(conn_); | |
1cf238db | 303 | |
528b2c61 | 304 | /* moving to the next connection is handled by the context free */ |
305 | dlinkDelete(&active, &ClientActiveRequests); | |
9ce7856a | 306 | |
72bdee4c | 307 | PROF_stop(httpRequestFree); |
528b2c61 | 308 | } |
62e76326 | 309 | |
11992b6f AJ |
310 | /** |
311 | * Create a request and kick it off | |
312 | * | |
313 | * \retval 0 success | |
314 | * \retval -1 failure | |
315 | * | |
69660be0 | 316 | * TODO: Pass in the buffers to be used in the inital Read request, as they are |
317 | * determined by the user | |
edce4d98 | 318 | */ |
11992b6f | 319 | int |
60745f24 | 320 | clientBeginRequest(const HttpRequestMethod& method, char const *url, CSCB * streamcallback, |
0655fa4d | 321 | CSD * streamdetach, ClientStreamData streamdata, HttpHeader const *header, |
62e76326 | 322 | char *tailbuf, size_t taillen) |
edce4d98 | 323 | { |
324 | size_t url_sz; | |
a0355e95 | 325 | ClientHttpRequest *http = new ClientHttpRequest(NULL); |
190154cf | 326 | HttpRequest *request; |
528b2c61 | 327 | StoreIOBuffer tempBuffer; |
af0ded40 CT |
328 | if (http->al != NULL) |
329 | http->al->cache.start_time = current_time; | |
edce4d98 | 330 | /* this is only used to adjust the connection offset in client_side.c */ |
331 | http->req_sz = 0; | |
c8be6d7b | 332 | tempBuffer.length = taillen; |
333 | tempBuffer.data = tailbuf; | |
edce4d98 | 334 | /* client stream setup */ |
335 | clientStreamInit(&http->client_stream, clientGetMoreData, clientReplyDetach, | |
0655fa4d | 336 | clientReplyStatus, new clientReplyContext(http), streamcallback, |
62e76326 | 337 | streamdetach, streamdata, tempBuffer); |
edce4d98 | 338 | /* make it visible in the 'current acctive requests list' */ |
edce4d98 | 339 | /* Set flags */ |
a46d2c0e | 340 | /* internal requests only makes sense in an |
341 | * accelerator today. TODO: accept flags ? */ | |
be4d35dc | 342 | http->flags.accel = true; |
edce4d98 | 343 | /* allow size for url rewriting */ |
344 | url_sz = strlen(url) + Config.appendDomainLen + 5; | |
e6ccf245 | 345 | http->uri = (char *)xcalloc(url_sz, 1); |
edce4d98 | 346 | strcpy(http->uri, url); |
347 | ||
c21ad0f5 | 348 | if ((request = HttpRequest::CreateFromUrlAndMethod(http->uri, method)) == NULL) { |
bf8fe701 | 349 | debugs(85, 5, "Invalid URL: " << http->uri); |
62e76326 | 350 | return -1; |
edce4d98 | 351 | } |
62e76326 | 352 | |
69660be0 | 353 | /* |
11992b6f | 354 | * now update the headers in request with our supplied headers. urlParse |
69660be0 | 355 | * should return a blank header set, but we use Update to be sure of |
356 | * correctness. | |
edce4d98 | 357 | */ |
358 | if (header) | |
a9925b40 | 359 | request->header.update(header, NULL); |
62e76326 | 360 | |
edce4d98 | 361 | http->log_uri = xstrdup(urlCanonicalClean(request)); |
62e76326 | 362 | |
edce4d98 | 363 | /* http struct now ready */ |
364 | ||
69660be0 | 365 | /* |
366 | * build new header list *? TODO | |
edce4d98 | 367 | */ |
45e5102d | 368 | request->flags.accelerated = http->flags.accel; |
62e76326 | 369 | |
e857372a | 370 | request->flags.internalClient = true; |
a46d2c0e | 371 | |
372 | /* this is an internally created | |
373 | * request, not subject to acceleration | |
374 | * target overrides */ | |
69660be0 | 375 | /* |
376 | * FIXME? Do we want to detect and handle internal requests of internal | |
377 | * objects ? | |
378 | */ | |
edce4d98 | 379 | |
380 | /* Internally created requests cannot have bodies today */ | |
381 | request->content_length = 0; | |
62e76326 | 382 | |
4dd643d5 | 383 | request->client_addr.setNoAddr(); |
62e76326 | 384 | |
3d674977 | 385 | #if FOLLOW_X_FORWARDED_FOR |
4dd643d5 | 386 | request->indirect_client_addr.setNoAddr(); |
3d674977 | 387 | #endif /* FOLLOW_X_FORWARDED_FOR */ |
26ac0430 | 388 | |
4dd643d5 | 389 | request->my_addr.setNoAddr(); /* undefined for internal requests */ |
62e76326 | 390 | |
4dd643d5 | 391 | request->my_addr.port(0); |
62e76326 | 392 | |
3872be7c | 393 | /* Our version is HTTP/1.1 */ |
526ed14e | 394 | request->http_ver = Http::ProtocolVersion(1,1); |
62e76326 | 395 | |
b248c2a3 AJ |
396 | http->request = request; |
397 | HTTPMSGLOCK(http->request); | |
edce4d98 | 398 | |
399 | /* optional - skip the access check ? */ | |
de31d06f | 400 | http->calloutContext = new ClientRequestContext(http); |
401 | ||
57abaac0 | 402 | http->calloutContext->http_access_done = false; |
de31d06f | 403 | |
57abaac0 | 404 | http->calloutContext->redirect_done = true; |
de31d06f | 405 | |
57abaac0 | 406 | http->calloutContext->no_cache_done = true; |
de31d06f | 407 | |
408 | http->doCallouts(); | |
62e76326 | 409 | |
edce4d98 | 410 | return 0; |
411 | } | |
412 | ||
de31d06f | 413 | bool |
414 | ClientRequestContext::httpStateIsValid() | |
415 | { | |
416 | ClientHttpRequest *http_ = http; | |
417 | ||
418 | if (cbdataReferenceValid(http_)) | |
419 | return true; | |
420 | ||
421 | http = NULL; | |
422 | ||
423 | cbdataReferenceDone(http_); | |
424 | ||
425 | return false; | |
426 | } | |
427 | ||
3d674977 AJ |
428 | #if FOLLOW_X_FORWARDED_FOR |
429 | /** | |
a9044668 | 430 | * clientFollowXForwardedForCheck() checks the content of X-Forwarded-For: |
3d674977 AJ |
431 | * against the followXFF ACL, or cleans up and passes control to |
432 | * clientAccessCheck(). | |
d096ace1 AJ |
433 | * |
434 | * The trust model here is a little ambiguous. So to clarify the logic: | |
435 | * - we may always use the direct client address as the client IP. | |
a9044668 | 436 | * - these trust tests merey tell whether we trust given IP enough to believe the |
d096ace1 AJ |
437 | * IP string which it appended to the X-Forwarded-For: header. |
438 | * - if at any point we don't trust what an IP adds we stop looking. | |
439 | * - at that point the current contents of indirect_client_addr are the value set | |
440 | * by the last previously trusted IP. | |
441 | * ++ indirect_client_addr contains the remote direct client from the trusted peers viewpoint. | |
3d674977 | 442 | */ |
3d674977 | 443 | static void |
2efeb0b7 | 444 | clientFollowXForwardedForCheck(allow_t answer, void *data) |
3d674977 AJ |
445 | { |
446 | ClientRequestContext *calloutContext = (ClientRequestContext *) data; | |
3d674977 AJ |
447 | |
448 | if (!calloutContext->httpStateIsValid()) | |
449 | return; | |
450 | ||
d096ace1 AJ |
451 | ClientHttpRequest *http = calloutContext->http; |
452 | HttpRequest *request = http->request; | |
453 | ||
3d674977 AJ |
454 | /* |
455 | * answer should be be ACCESS_ALLOWED or ACCESS_DENIED if we are | |
456 | * called as a result of ACL checks, or -1 if we are called when | |
457 | * there's nothing left to do. | |
458 | */ | |
459 | if (answer == ACCESS_ALLOWED && | |
26ac0430 | 460 | request->x_forwarded_for_iterator.size () != 0) { |
d096ace1 | 461 | |
3d674977 | 462 | /* |
d096ace1 AJ |
463 | * Remove the last comma-delimited element from the |
464 | * x_forwarded_for_iterator and use it to repeat the cycle. | |
465 | */ | |
3d674977 AJ |
466 | const char *p; |
467 | const char *asciiaddr; | |
468 | int l; | |
b7ac5457 | 469 | Ip::Address addr; |
bb790702 | 470 | p = request->x_forwarded_for_iterator.termedBuf(); |
3d674977 AJ |
471 | l = request->x_forwarded_for_iterator.size(); |
472 | ||
473 | /* | |
474 | * XXX x_forwarded_for_iterator should really be a list of | |
475 | * IP addresses, but it's a String instead. We have to | |
476 | * walk backwards through the String, biting off the last | |
477 | * comma-delimited part each time. As long as the data is in | |
478 | * a String, we should probably implement and use a variant of | |
479 | * strListGetItem() that walks backwards instead of forwards | |
480 | * through a comma-separated list. But we don't even do that; | |
481 | * we just do the work in-line here. | |
482 | */ | |
483 | /* skip trailing space and commas */ | |
484 | while (l > 0 && (p[l-1] == ',' || xisspace(p[l-1]))) | |
5e263176 | 485 | --l; |
3d674977 AJ |
486 | request->x_forwarded_for_iterator.cut(l); |
487 | /* look for start of last item in list */ | |
488 | while (l > 0 && ! (p[l-1] == ',' || xisspace(p[l-1]))) | |
5e263176 | 489 | --l; |
3d674977 | 490 | asciiaddr = p+l; |
fafd0efa | 491 | if ((addr = asciiaddr)) { |
3d674977 AJ |
492 | request->indirect_client_addr = addr; |
493 | request->x_forwarded_for_iterator.cut(l); | |
d096ace1 AJ |
494 | calloutContext->acl_checklist = clientAclChecklistCreate(Config.accessList.followXFF, http); |
495 | if (!Config.onoff.acl_uses_indirect_client) { | |
496 | /* override the default src_addr tested if we have to go deeper than one level into XFF */ | |
497 | Filled(calloutContext->acl_checklist)->src_addr = request->indirect_client_addr; | |
3d674977 | 498 | } |
d096ace1 | 499 | calloutContext->acl_checklist->nonBlockingCheck(clientFollowXForwardedForCheck, data); |
3d674977 AJ |
500 | return; |
501 | } | |
502 | } /*if (answer == ACCESS_ALLOWED && | |
503 | request->x_forwarded_for_iterator.size () != 0)*/ | |
504 | ||
505 | /* clean up, and pass control to clientAccessCheck */ | |
26ac0430 | 506 | if (Config.onoff.log_uses_indirect_client) { |
3d674977 AJ |
507 | /* |
508 | * Ensure that the access log shows the indirect client | |
509 | * instead of the direct client. | |
510 | */ | |
511 | ConnStateData *conn = http->getConn(); | |
512 | conn->log_addr = request->indirect_client_addr; | |
d4806c91 | 513 | http->al->cache.caddr = conn->log_addr; |
3d674977 AJ |
514 | } |
515 | request->x_forwarded_for_iterator.clean(); | |
e857372a | 516 | request->flags.done_follow_x_forwarded_for = true; |
3d674977 | 517 | |
d096ace1 AJ |
518 | if (answer != ACCESS_ALLOWED && answer != ACCESS_DENIED) { |
519 | debugs(28, DBG_CRITICAL, "ERROR: Processing X-Forwarded-For. Stopping at IP address: " << request->indirect_client_addr ); | |
493d3865 AJ |
520 | } |
521 | ||
522 | /* process actual access ACL as normal. */ | |
523 | calloutContext->clientAccessCheck(); | |
3d674977 AJ |
524 | } |
525 | #endif /* FOLLOW_X_FORWARDED_FOR */ | |
526 | ||
fe97983f AJ |
527 | static void |
528 | hostHeaderIpVerifyWrapper(const ipcache_addrs* ia, const DnsLookupDetails &dns, void *data) | |
529 | { | |
530 | ClientRequestContext *c = static_cast<ClientRequestContext*>(data); | |
531 | c->hostHeaderIpVerify(ia, dns); | |
532 | } | |
533 | ||
534 | void | |
535 | ClientRequestContext::hostHeaderIpVerify(const ipcache_addrs* ia, const DnsLookupDetails &dns) | |
536 | { | |
537 | Comm::ConnectionPointer clientConn = http->getConn()->clientConnection; | |
538 | ||
539 | // note the DNS details for the transaction stats. | |
540 | http->request->recordLookup(dns); | |
541 | ||
542 | if (ia != NULL && ia->count > 0) { | |
543 | // Is the NAT destination IP in DNS? | |
5086523e | 544 | for (int i = 0; i < ia->count; ++i) { |
fe97983f AJ |
545 | if (clientConn->local.matchIPAddr(ia->in_addrs[i]) == 0) { |
546 | debugs(85, 3, HERE << "validate IP " << clientConn->local << " possible from Host:"); | |
e857372a | 547 | http->request->flags.hostVerified = true; |
fe97983f AJ |
548 | http->doCallouts(); |
549 | return; | |
550 | } | |
551 | debugs(85, 3, HERE << "validate IP " << clientConn->local << " non-match from Host: IP " << ia->in_addrs[i]); | |
552 | } | |
553 | } | |
554 | debugs(85, 3, HERE << "FAIL: validate IP " << clientConn->local << " possible from Host:"); | |
05b28f84 | 555 | hostHeaderVerifyFailed("local IP", "any domain IP"); |
fe97983f AJ |
556 | } |
557 | ||
558 | void | |
05b28f84 | 559 | ClientRequestContext::hostHeaderVerifyFailed(const char *A, const char *B) |
fe97983f | 560 | { |
2962f8b8 AJ |
561 | // IP address validation for Host: failed. Admin wants to ignore them. |
562 | // NP: we do not yet handle CONNECT tunnels well, so ignore for them | |
c2a7cefd | 563 | if (!Config.onoff.hostStrictVerify && http->request->method != Http::METHOD_CONNECT) { |
2962f8b8 AJ |
564 | debugs(85, 3, "SECURITY ALERT: Host header forgery detected on " << http->getConn()->clientConnection << |
565 | " (" << A << " does not match " << B << ") on URL: " << urlCanonical(http->request)); | |
566 | ||
450fe1cb | 567 | // NP: it is tempting to use 'flags.noCache' but that is all about READing cache data. |
2962f8b8 | 568 | // The problems here are about WRITE for new cache content, which means flags.cachable |
e857372a | 569 | http->request->flags.cachable = false; // MUST NOT cache (for now) |
2962f8b8 | 570 | // XXX: when we have updated the cache key to base on raw-IP + URI this cacheable limit can go. |
e857372a | 571 | http->request->flags.hierarchical = false; // MUST NOT pass to peers (for now) |
2962f8b8 | 572 | // XXX: when we have sorted out the best way to relay requests properly to peers this hierarchical limit can go. |
567fe088 | 573 | http->doCallouts(); |
2962f8b8 AJ |
574 | return; |
575 | } | |
576 | ||
8f489ad7 AJ |
577 | debugs(85, DBG_IMPORTANT, "SECURITY ALERT: Host header forgery detected on " << |
578 | http->getConn()->clientConnection << " (" << A << " does not match " << B << ")"); | |
579 | debugs(85, DBG_IMPORTANT, "SECURITY ALERT: By user agent: " << http->request->header.getStr(HDR_USER_AGENT)); | |
580 | debugs(85, DBG_IMPORTANT, "SECURITY ALERT: on URL: " << urlCanonical(http->request)); | |
fe97983f AJ |
581 | |
582 | // IP address validation for Host: failed. reject the connection. | |
583 | clientStreamNode *node = (clientStreamNode *)http->client_stream.tail->prev->data; | |
584 | clientReplyContext *repContext = dynamic_cast<clientReplyContext *>(node->data.getRaw()); | |
585 | assert (repContext); | |
955394ce | 586 | repContext->setReplyToError(ERR_CONFLICT_HOST, Http::scConflict, |
fe97983f AJ |
587 | http->request->method, NULL, |
588 | http->getConn()->clientConnection->remote, | |
589 | http->request, | |
590 | NULL, | |
591 | #if USE_AUTH | |
cc1e110a AJ |
592 | http->getConn() != NULL && http->getConn()->getAuth() != NULL ? |
593 | http->getConn()->getAuth() : http->request->auth_user_request); | |
fe97983f AJ |
594 | #else |
595 | NULL); | |
596 | #endif | |
597 | node = (clientStreamNode *)http->client_stream.tail->data; | |
598 | clientStreamRead(node, http, node->readBuffer); | |
599 | } | |
600 | ||
601 | void | |
602 | ClientRequestContext::hostHeaderVerify() | |
603 | { | |
604 | // Require a Host: header. | |
605 | const char *host = http->request->header.getStr(HDR_HOST); | |
fe97983f AJ |
606 | |
607 | if (!host) { | |
608 | // TODO: dump out the HTTP/1.1 error about missing host header. | |
609 | // otherwise this is fine, can't forge a header value when its not even set. | |
610 | debugs(85, 3, HERE << "validate skipped with no Host: header present."); | |
611 | http->doCallouts(); | |
612 | return; | |
613 | } | |
614 | ||
45e5102d | 615 | if (http->request->flags.internal) { |
8f489ad7 AJ |
616 | // TODO: kill this when URL handling allows partial URLs out of accel mode |
617 | // and we no longer screw with the URL just to add our internal host there | |
618 | debugs(85, 6, HERE << "validate skipped due to internal composite URL."); | |
619 | http->doCallouts(); | |
620 | return; | |
621 | } | |
622 | ||
fe97983f AJ |
623 | // Locate if there is a port attached, strip ready for IP lookup |
624 | char *portStr = NULL; | |
91663dce AJ |
625 | char *hostB = xstrdup(host); |
626 | host = hostB; | |
fe97983f AJ |
627 | if (host[0] == '[') { |
628 | // IPv6 literal. | |
fe97983f | 629 | portStr = strchr(hostB, ']'); |
91663dce AJ |
630 | if (portStr && *(++portStr) != ':') { |
631 | portStr = NULL; | |
fe97983f | 632 | } |
91663dce | 633 | } else { |
fe97983f | 634 | // Domain or IPv4 literal with port |
fe97983f | 635 | portStr = strrchr(hostB, ':'); |
91663dce AJ |
636 | } |
637 | ||
638 | uint16_t port = 0; | |
639 | if (portStr) { | |
640 | *portStr = '\0'; // strip the ':' | |
126e1dc0 AJ |
641 | if (*(++portStr) != '\0') { |
642 | char *end = NULL; | |
643 | int64_t ret = strtoll(portStr, &end, 10); | |
644 | if (end == portStr || *end != '\0' || ret < 1 || ret > 0xFFFF) { | |
645 | // invalid port details. Replace the ':' | |
646 | *(--portStr) = ':'; | |
647 | portStr = NULL; | |
648 | } else | |
649 | port = (ret & 0xFFFF); | |
650 | } | |
fe97983f AJ |
651 | } |
652 | ||
653 | debugs(85, 3, HERE << "validate host=" << host << ", port=" << port << ", portStr=" << (portStr?portStr:"NULL")); | |
0d901ef4 | 654 | if (http->request->flags.intercepted || http->request->flags.interceptTproxy) { |
ba4d9da0 | 655 | // verify the Host: port (if any) matches the apparent destination |
4dd643d5 AJ |
656 | if (portStr && port != http->getConn()->clientConnection->local.port()) { |
657 | debugs(85, 3, HERE << "FAIL on validate port " << http->getConn()->clientConnection->local.port() << | |
05b28f84 AJ |
658 | " matches Host: port " << port << " (" << portStr << ")"); |
659 | hostHeaderVerifyFailed("intercepted port", portStr); | |
ba4d9da0 AJ |
660 | } else { |
661 | // XXX: match the scheme default port against the apparent destination | |
fe97983f | 662 | |
ba4d9da0 AJ |
663 | // verify the destination DNS is one of the Host: headers IPs |
664 | ipcache_nbgethostbyname(host, hostHeaderIpVerifyWrapper, this); | |
665 | } | |
06059513 | 666 | } else if (!Config.onoff.hostStrictVerify) { |
90529125 AJ |
667 | debugs(85, 3, HERE << "validate skipped."); |
668 | http->doCallouts(); | |
8f489ad7 AJ |
669 | } else if (strlen(host) != strlen(http->request->GetHost())) { |
670 | // Verify forward-proxy requested URL domain matches the Host: header | |
671 | debugs(85, 3, HERE << "FAIL on validate URL domain length " << http->request->GetHost() << " matches Host: " << host); | |
672 | hostHeaderVerifyFailed(host, http->request->GetHost()); | |
673 | } else if (matchDomainName(host, http->request->GetHost()) != 0) { | |
ba4d9da0 | 674 | // Verify forward-proxy requested URL domain matches the Host: header |
fe97983f | 675 | debugs(85, 3, HERE << "FAIL on validate URL domain " << http->request->GetHost() << " matches Host: " << host); |
05b28f84 | 676 | hostHeaderVerifyFailed(host, http->request->GetHost()); |
ba4d9da0 AJ |
677 | } else if (portStr && port != http->request->port) { |
678 | // Verify forward-proxy requested URL domain matches the Host: header | |
679 | debugs(85, 3, HERE << "FAIL on validate URL port " << http->request->port << " matches Host: port " << portStr); | |
680 | hostHeaderVerifyFailed("URL port", portStr); | |
4e3f4dc7 | 681 | } else if (!portStr && http->request->method != Http::METHOD_CONNECT && http->request->port != urlDefaultPort(http->request->url.getScheme())) { |
ba4d9da0 | 682 | // Verify forward-proxy requested URL domain matches the Host: header |
65d2fdbf | 683 | // Special case: we don't have a default-port to check for CONNECT. Assume URL is correct. |
4e3f4dc7 | 684 | debugs(85, 3, "FAIL on validate URL port " << http->request->port << " matches Host: default port " << urlDefaultPort(http->request->url.getScheme())); |
ba4d9da0 AJ |
685 | hostHeaderVerifyFailed("URL port", "default port"); |
686 | } else { | |
687 | // Okay no problem. | |
688 | debugs(85, 3, HERE << "validate passed."); | |
e857372a | 689 | http->request->flags.hostVerified = true; |
ba4d9da0 | 690 | http->doCallouts(); |
fe97983f | 691 | } |
ba4d9da0 | 692 | safe_free(hostB); |
fe97983f AJ |
693 | } |
694 | ||
edce4d98 | 695 | /* This is the entry point for external users of the client_side routines */ |
696 | void | |
de31d06f | 697 | ClientRequestContext::clientAccessCheck() |
edce4d98 | 698 | { |
fbe9e379 | 699 | #if FOLLOW_X_FORWARDED_FOR |
f1a1f20a | 700 | if (!http->request->flags.doneFollowXff() && |
26ac0430 AJ |
701 | Config.accessList.followXFF && |
702 | http->request->header.has(HDR_X_FORWARDED_FOR)) { | |
d096ace1 AJ |
703 | |
704 | /* we always trust the direct client address for actual use */ | |
705 | http->request->indirect_client_addr = http->request->client_addr; | |
4dd643d5 | 706 | http->request->indirect_client_addr.port(0); |
d096ace1 AJ |
707 | |
708 | /* setup the XFF iterator for processing */ | |
709 | http->request->x_forwarded_for_iterator = http->request->header.getList(HDR_X_FORWARDED_FOR); | |
710 | ||
711 | /* begin by checking to see if we trust direct client enough to walk XFF */ | |
712 | acl_checklist = clientAclChecklistCreate(Config.accessList.followXFF, http); | |
713 | acl_checklist->nonBlockingCheck(clientFollowXForwardedForCheck, this); | |
3d674977 AJ |
714 | return; |
715 | } | |
fbe9e379 | 716 | #endif |
493d3865 | 717 | |
b50e327b AJ |
718 | if (Config.accessList.http) { |
719 | acl_checklist = clientAclChecklistCreate(Config.accessList.http, http); | |
720 | acl_checklist->nonBlockingCheck(clientAccessCheckDoneWrapper, this); | |
721 | } else { | |
722 | debugs(0, DBG_CRITICAL, "No http_access configuration found. This will block ALL traffic"); | |
723 | clientAccessCheckDone(ACCESS_DENIED); | |
724 | } | |
edce4d98 | 725 | } |
726 | ||
533493da AJ |
727 | /** |
728 | * Identical in operation to clientAccessCheck() but performed later using different configured ACL list. | |
729 | * The default here is to allow all. Since the earlier http_access should do a default deny all. | |
730 | * This check is just for a last-minute denial based on adapted request headers. | |
731 | */ | |
732 | void | |
733 | ClientRequestContext::clientAccessCheck2() | |
734 | { | |
735 | if (Config.accessList.adapted_http) { | |
736 | acl_checklist = clientAclChecklistCreate(Config.accessList.adapted_http, http); | |
737 | acl_checklist->nonBlockingCheck(clientAccessCheckDoneWrapper, this); | |
738 | } else { | |
327e2131 | 739 | debugs(85, 2, HERE << "No adapted_http_access configuration. default: ALLOW"); |
533493da AJ |
740 | clientAccessCheckDone(ACCESS_ALLOWED); |
741 | } | |
742 | } | |
743 | ||
edce4d98 | 744 | void |
2efeb0b7 | 745 | clientAccessCheckDoneWrapper(allow_t answer, void *data) |
edce4d98 | 746 | { |
de31d06f | 747 | ClientRequestContext *calloutContext = (ClientRequestContext *) data; |
fbade053 | 748 | |
de31d06f | 749 | if (!calloutContext->httpStateIsValid()) |
62e76326 | 750 | return; |
62e76326 | 751 | |
de31d06f | 752 | calloutContext->clientAccessCheckDone(answer); |
753 | } | |
754 | ||
9d5e7196 AJ |
755 | void |
756 | ClientRequestContext::clientAccessCheckDone(const allow_t &answer) | |
de31d06f | 757 | { |
758 | acl_checklist = NULL; | |
edce4d98 | 759 | err_type page_id; |
955394ce | 760 | Http::StatusCode status; |
7f06a3d8 | 761 | debugs(85, 2, "The request " << http->request->method << ' ' << |
9d5e7196 | 762 | http->uri << " is " << answer << |
6f58d7d7 | 763 | "; last ACL checked: " << (AclMatchedName ? AclMatchedName : "[none]")); |
f5691f9c | 764 | |
2f1431ea AJ |
765 | #if USE_AUTH |
766 | char const *proxy_auth_msg = "<null>"; | |
cc1e110a AJ |
767 | if (http->getConn() != NULL && http->getConn()->getAuth() != NULL) |
768 | proxy_auth_msg = http->getConn()->getAuth()->denyMessage("<null>"); | |
f5691f9c | 769 | else if (http->request->auth_user_request != NULL) |
770 | proxy_auth_msg = http->request->auth_user_request->denyMessage("<null>"); | |
2f1431ea | 771 | #endif |
62e76326 | 772 | |
dd332b92 | 773 | if (answer != ACCESS_ALLOWED) { |
9d5e7196 | 774 | // auth has a grace period where credentials can be expired but okay not to challenge. |
309347ef | 775 | |
9d5e7196 AJ |
776 | /* Send an auth challenge or error */ |
777 | // XXX: do we still need aclIsProxyAuth() ? | |
dd332b92 | 778 | bool auth_challenge = (answer == ACCESS_AUTH_REQUIRED || aclIsProxyAuth(AclMatchedName)); |
9d5e7196 AJ |
779 | debugs(85, 5, "Access Denied: " << http->uri); |
780 | debugs(85, 5, "AclMatchedName = " << (AclMatchedName ? AclMatchedName : "<null>")); | |
2f1431ea | 781 | #if USE_AUTH |
9d5e7196 AJ |
782 | if (auth_challenge) |
783 | debugs(33, 5, "Proxy Auth Message = " << (proxy_auth_msg ? proxy_auth_msg : "<null>")); | |
2f1431ea | 784 | #endif |
9ce7856a | 785 | |
9d5e7196 AJ |
786 | /* |
787 | * NOTE: get page_id here, based on AclMatchedName because if | |
788 | * USE_DELAY_POOLS is enabled, then AclMatchedName gets clobbered in | |
789 | * the clientCreateStoreEntry() call just below. Pedro Ribeiro | |
790 | * <pribeiro@isel.pt> | |
791 | */ | |
792 | page_id = aclGetDenyInfoPage(&Config.denyInfoList, AclMatchedName, answer != ACCESS_AUTH_REQUIRED); | |
9ce7856a | 793 | |
9d5e7196 | 794 | http->logType = LOG_TCP_DENIED; |
62e76326 | 795 | |
9d5e7196 | 796 | if (auth_challenge) { |
2f1431ea | 797 | #if USE_AUTH |
450fe1cb | 798 | if (http->request->flags.sslBumped) { |
9d5e7196 | 799 | /*SSL Bumped request, authentication is not possible*/ |
955394ce | 800 | status = Http::scForbidden; |
9d5e7196 AJ |
801 | } else if (!http->flags.accel) { |
802 | /* Proxy authorisation needed */ | |
955394ce | 803 | status = Http::scProxyAuthenticationRequired; |
9d5e7196 AJ |
804 | } else { |
805 | /* WWW authorisation needed */ | |
955394ce | 806 | status = Http::scUnauthorized; |
9d5e7196 | 807 | } |
ed6163ef | 808 | #else |
9d5e7196 | 809 | // need auth, but not possible to do. |
955394ce | 810 | status = Http::scForbidden; |
ed6163ef | 811 | #endif |
9d5e7196 AJ |
812 | if (page_id == ERR_NONE) |
813 | page_id = ERR_CACHE_ACCESS_DENIED; | |
814 | } else { | |
955394ce | 815 | status = Http::scForbidden; |
ed6163ef | 816 | |
9d5e7196 AJ |
817 | if (page_id == ERR_NONE) |
818 | page_id = ERR_ACCESS_DENIED; | |
819 | } | |
62e76326 | 820 | |
9d5e7196 | 821 | Ip::Address tmpnoaddr; |
4dd643d5 | 822 | tmpnoaddr.setNoAddr(); |
87f237a9 | 823 | error = clientBuildError(page_id, status, |
68715527 CT |
824 | NULL, |
825 | http->getConn() != NULL ? http->getConn()->clientConnection->remote : tmpnoaddr, | |
826 | http->request | |
87f237a9 | 827 | ); |
68715527 | 828 | |
2f1431ea | 829 | #if USE_AUTH |
87f237a9 | 830 | error->auth_user_request = |
cc1e110a AJ |
831 | http->getConn() != NULL && http->getConn()->getAuth() != NULL ? |
832 | http->getConn()->getAuth() : http->request->auth_user_request; | |
2f1431ea | 833 | #endif |
68715527 CT |
834 | |
835 | readNextRequest = true; | |
9d5e7196 | 836 | } |
de31d06f | 837 | |
dd332b92 | 838 | /* ACCESS_ALLOWED continues here ... */ |
de31d06f | 839 | safe_free(http->uri); |
840 | ||
841 | http->uri = xstrdup(urlCanonical(http->request)); | |
842 | ||
843 | http->doCallouts(); | |
844 | } | |
845 | ||
a83c6ed6 | 846 | #if USE_ADAPTATION |
de31d06f | 847 | void |
79628299 | 848 | ClientHttpRequest::noteAdaptationAclCheckDone(Adaptation::ServiceGroupPointer g) |
de31d06f | 849 | { |
a83c6ed6 | 850 | debugs(93,3,HERE << this << " adaptationAclCheckDone called"); |
6ec67de9 | 851 | |
e1381638 | 852 | #if ICAP_CLIENT |
79628299 | 853 | Adaptation::Icap::History::Pointer ih = request->icapHistory(); |
e1381638 | 854 | if (ih != NULL) { |
6bc2a98d | 855 | if (getConn() != NULL && getConn()->clientConnection != NULL) { |
79628299 | 856 | ih->rfc931 = getConn()->clientConnection->rfc931; |
cb4f4424 | 857 | #if USE_OPENSSL |
6bc2a98d NH |
858 | if (getConn()->clientConnection->isOpen()) { |
859 | ih->ssluser = sslGetUserEmail(fd_table[getConn()->clientConnection->fd].ssl); | |
860 | } | |
e1381638 | 861 | #endif |
3ff65596 | 862 | } |
79628299 CT |
863 | ih->log_uri = log_uri; |
864 | ih->req_sz = req_sz; | |
3ff65596 AR |
865 | } |
866 | #endif | |
867 | ||
a22e6cd3 AR |
868 | if (!g) { |
869 | debugs(85,3, HERE << "no adaptation needed"); | |
79628299 | 870 | doCallouts(); |
5f8252d2 | 871 | return; |
872 | } | |
de31d06f | 873 | |
79628299 | 874 | startAdaptation(g); |
edce4d98 | 875 | } |
876 | ||
de31d06f | 877 | #endif |
878 | ||
14cc8559 | 879 | static void |
2efeb0b7 | 880 | clientRedirectAccessCheckDone(allow_t answer, void *data) |
14cc8559 | 881 | { |
882 | ClientRequestContext *context = (ClientRequestContext *)data; | |
9d5e7196 AJ |
883 | ClientHttpRequest *http = context->http; |
884 | context->acl_checklist = NULL; | |
14cc8559 | 885 | |
886 | if (answer == ACCESS_ALLOWED) | |
9d5e7196 | 887 | redirectStart(http, clientRedirectDoneWrapper, context); |
bc98bc4b | 888 | else { |
3c2c35d3 | 889 | HelperReply nilReply; |
c2d5e22e | 890 | nilReply.result = HelperReply::Error; |
bc98bc4b AJ |
891 | context->clientRedirectDone(nilReply); |
892 | } | |
14cc8559 | 893 | } |
894 | ||
de31d06f | 895 | void |
896 | ClientRequestContext::clientRedirectStart() | |
14cc8559 | 897 | { |
48e7baac | 898 | debugs(33, 5, HERE << "'" << http->uri << "'"); |
b11724bb | 899 | (void)SyncNotes(*http->al, *http->request); |
14cc8559 | 900 | if (Config.accessList.redirector) { |
de31d06f | 901 | acl_checklist = clientAclChecklistCreate(Config.accessList.redirector, http); |
902 | acl_checklist->nonBlockingCheck(clientRedirectAccessCheckDone, this); | |
14cc8559 | 903 | } else |
de31d06f | 904 | redirectStart(http, clientRedirectDoneWrapper, this); |
14cc8559 | 905 | } |
906 | ||
a8a0b1c2 EC |
907 | /** |
908 | * This methods handles Access checks result of StoreId access list. | |
909 | * Will handle as "ERR" (no change) in a case Access is not allowed. | |
910 | */ | |
911 | static void | |
912 | clientStoreIdAccessCheckDone(allow_t answer, void *data) | |
913 | { | |
914 | ClientRequestContext *context = static_cast<ClientRequestContext *>(data); | |
915 | ClientHttpRequest *http = context->http; | |
916 | context->acl_checklist = NULL; | |
917 | ||
918 | if (answer == ACCESS_ALLOWED) | |
919 | storeIdStart(http, clientStoreIdDoneWrapper, context); | |
920 | else { | |
921 | debugs(85, 3, "access denied expected ERR reply handling: " << answer); | |
922 | HelperReply nilReply; | |
923 | nilReply.result = HelperReply::Error; | |
924 | context->clientStoreIdDone(nilReply); | |
925 | } | |
926 | } | |
927 | ||
928 | /** | |
929 | * Start locating an alternative storeage ID string (if any) from admin | |
930 | * configured helper program. This is an asynchronous operation terminating in | |
931 | * ClientRequestContext::clientStoreIdDone() when completed. | |
932 | */ | |
933 | void | |
934 | ClientRequestContext::clientStoreIdStart() | |
935 | { | |
936 | debugs(33, 5,"'" << http->uri << "'"); | |
937 | ||
938 | if (Config.accessList.store_id) { | |
939 | acl_checklist = clientAclChecklistCreate(Config.accessList.store_id, http); | |
940 | acl_checklist->nonBlockingCheck(clientStoreIdAccessCheckDone, this); | |
941 | } else | |
942 | storeIdStart(http, clientStoreIdDoneWrapper, this); | |
943 | } | |
944 | ||
edce4d98 | 945 | static int |
59a1efb2 | 946 | clientHierarchical(ClientHttpRequest * http) |
edce4d98 | 947 | { |
190154cf | 948 | HttpRequest *request = http->request; |
60745f24 | 949 | HttpRequestMethod method = request->method; |
edce4d98 | 950 | |
2962f8b8 | 951 | // intercepted requests MUST NOT (yet) be sent to peers unless verified |
0d901ef4 | 952 | if (!request->flags.hostVerified && (request->flags.intercepted || request->flags.interceptTproxy)) |
2962f8b8 AJ |
953 | return 0; |
954 | ||
69660be0 | 955 | /* |
956 | * IMS needs a private key, so we can use the hierarchy for IMS only if our | |
957 | * neighbors support private keys | |
958 | */ | |
62e76326 | 959 | |
45e5102d | 960 | if (request->flags.ims && !neighbors_do_private_keys) |
62e76326 | 961 | return 0; |
962 | ||
69660be0 | 963 | /* |
964 | * This is incorrect: authenticating requests can be sent via a hierarchy | |
06b97e72 | 965 | * (they can even be cached if the correct headers are set on the reply) |
edce4d98 | 966 | */ |
45e5102d | 967 | if (request->flags.auth) |
62e76326 | 968 | return 0; |
969 | ||
c2a7cefd | 970 | if (method == Http::METHOD_TRACE) |
62e76326 | 971 | return 1; |
972 | ||
c2a7cefd | 973 | if (method != Http::METHOD_GET) |
62e76326 | 974 | return 0; |
975 | ||
450fe1cb | 976 | if (request->flags.loopDetected) |
62e76326 | 977 | return 0; |
978 | ||
4e3f4dc7 | 979 | if (request->url.getScheme() == AnyP::PROTO_HTTP) |
c2a7cefd | 980 | return method.respMaybeCacheable(); |
62e76326 | 981 | |
4e3f4dc7 | 982 | if (request->url.getScheme() == AnyP::PROTO_GOPHER) |
62e76326 | 983 | return gopherCachable(request); |
984 | ||
4e3f4dc7 | 985 | if (request->url.getScheme() == AnyP::PROTO_CACHE_OBJECT) |
62e76326 | 986 | return 0; |
987 | ||
edce4d98 | 988 | return 1; |
989 | } | |
990 | ||
46a1f562 HN |
991 | static void |
992 | clientCheckPinning(ClientHttpRequest * http) | |
993 | { | |
994 | HttpRequest *request = http->request; | |
995 | HttpHeader *req_hdr = &request->header; | |
996 | ConnStateData *http_conn = http->getConn(); | |
997 | ||
998 | /* Internal requests such as those from ESI includes may be without | |
999 | * a client connection | |
1000 | */ | |
1001 | if (!http_conn) | |
f54f527e | 1002 | return; |
46a1f562 | 1003 | |
450fe1cb FC |
1004 | request->flags.connectionAuthDisabled = http_conn->port->connection_auth_disabled; |
1005 | if (!request->flags.connectionAuthDisabled) { | |
73c36fd9 | 1006 | if (Comm::IsConnOpen(http_conn->pinning.serverConnection)) { |
46a1f562 | 1007 | if (http_conn->pinning.auth) { |
e857372a FC |
1008 | request->flags.connectionAuth = true; |
1009 | request->flags.auth = true; | |
46a1f562 | 1010 | } else { |
e857372a | 1011 | request->flags.connectionProxyAuth = true; |
46a1f562 | 1012 | } |
b1cf2350 AJ |
1013 | // These should already be linked correctly. |
1014 | assert(request->clientConnectionManager == http_conn); | |
46a1f562 HN |
1015 | } |
1016 | } | |
1017 | ||
1018 | /* check if connection auth is used, and flag as candidate for pinning | |
45e5102d | 1019 | * in such case. |
450fe1cb | 1020 | * Note: we may need to set flags.connectionAuth even if the connection |
46a1f562 HN |
1021 | * is already pinned if it was pinned earlier due to proxy auth |
1022 | */ | |
450fe1cb | 1023 | if (!request->flags.connectionAuth) { |
46a1f562 HN |
1024 | if (req_hdr->has(HDR_AUTHORIZATION) || req_hdr->has(HDR_PROXY_AUTHORIZATION)) { |
1025 | HttpHeaderPos pos = HttpHeaderInitPos; | |
1026 | HttpHeaderEntry *e; | |
1027 | int may_pin = 0; | |
1028 | while ((e = req_hdr->getEntry(&pos))) { | |
1029 | if (e->id == HDR_AUTHORIZATION || e->id == HDR_PROXY_AUTHORIZATION) { | |
1030 | const char *value = e->value.rawBuf(); | |
1031 | if (strncasecmp(value, "NTLM ", 5) == 0 | |
1032 | || | |
1033 | strncasecmp(value, "Negotiate ", 10) == 0 | |
1034 | || | |
1035 | strncasecmp(value, "Kerberos ", 9) == 0) { | |
1036 | if (e->id == HDR_AUTHORIZATION) { | |
e857372a | 1037 | request->flags.connectionAuth = true; |
46a1f562 HN |
1038 | may_pin = 1; |
1039 | } else { | |
e857372a | 1040 | request->flags.connectionProxyAuth = true; |
46a1f562 HN |
1041 | may_pin = 1; |
1042 | } | |
1043 | } | |
1044 | } | |
1045 | } | |
1046 | if (may_pin && !request->pinnedConnection()) { | |
b1cf2350 AJ |
1047 | // These should already be linked correctly. Just need the ServerConnection to pinn. |
1048 | assert(request->clientConnectionManager == http_conn); | |
46a1f562 HN |
1049 | } |
1050 | } | |
1051 | } | |
1052 | } | |
1053 | ||
edce4d98 | 1054 | static void |
59a1efb2 | 1055 | clientInterpretRequestHeaders(ClientHttpRequest * http) |
edce4d98 | 1056 | { |
190154cf | 1057 | HttpRequest *request = http->request; |
0ef77270 | 1058 | HttpHeader *req_hdr = &request->header; |
5086523e | 1059 | bool no_cache = false; |
edce4d98 | 1060 | const char *str; |
62e76326 | 1061 | |
edce4d98 | 1062 | request->imslen = -1; |
a9925b40 | 1063 | request->ims = req_hdr->getTime(HDR_IF_MODIFIED_SINCE); |
62e76326 | 1064 | |
edce4d98 | 1065 | if (request->ims > 0) |
e857372a | 1066 | request->flags.ims = true; |
62e76326 | 1067 | |
450fe1cb | 1068 | if (!request->flags.ignoreCc) { |
47fbd2a7 | 1069 | if (request->cache_control) { |
1259f9cf | 1070 | if (request->cache_control->hasNoCache()) |
5086523e | 1071 | no_cache=true; |
62e76326 | 1072 | |
adc2a453 | 1073 | // RFC 2616: treat Pragma:no-cache as if it was Cache-Control:no-cache when Cache-Control is missing |
47fbd2a7 | 1074 | } else if (req_hdr->has(HDR_PRAGMA)) |
cdf55306 AJ |
1075 | no_cache = req_hdr->hasListMember(HDR_PRAGMA,"no-cache",','); |
1076 | ||
432bc83c HN |
1077 | /* |
1078 | * Work around for supporting the Reload button in IE browsers when Squid | |
1079 | * is used as an accelerator or transparent proxy, by turning accelerated | |
1080 | * IMS request to no-cache requests. Now knows about IE 5.5 fix (is | |
1081 | * actually only fixed in SP1, but we can't tell whether we are talking to | |
1082 | * SP1 or not so all 5.5 versions are treated 'normally'). | |
1083 | */ | |
1084 | if (Config.onoff.ie_refresh) { | |
45e5102d | 1085 | if (http->flags.accel && request->flags.ims) { |
432bc83c HN |
1086 | if ((str = req_hdr->getStr(HDR_USER_AGENT))) { |
1087 | if (strstr(str, "MSIE 5.01") != NULL) | |
5086523e | 1088 | no_cache=true; |
432bc83c | 1089 | else if (strstr(str, "MSIE 5.0") != NULL) |
5086523e | 1090 | no_cache=true; |
432bc83c | 1091 | else if (strstr(str, "MSIE 4.") != NULL) |
5086523e | 1092 | no_cache=true; |
432bc83c | 1093 | else if (strstr(str, "MSIE 3.") != NULL) |
5086523e | 1094 | no_cache=true; |
432bc83c | 1095 | } |
62e76326 | 1096 | } |
1097 | } | |
edce4d98 | 1098 | } |
914b89a2 | 1099 | |
c2a7cefd | 1100 | if (request->method == Http::METHOD_OTHER) { |
5086523e | 1101 | no_cache=true; |
60745f24 | 1102 | } |
62e76326 | 1103 | |
edce4d98 | 1104 | if (no_cache) { |
626096be | 1105 | #if USE_HTTP_VIOLATIONS |
62e76326 | 1106 | |
1107 | if (Config.onoff.reload_into_ims) | |
e857372a | 1108 | request->flags.nocacheHack = true; |
62e76326 | 1109 | else if (refresh_nocache_hack) |
e857372a | 1110 | request->flags.nocacheHack = true; |
62e76326 | 1111 | else |
edce4d98 | 1112 | #endif |
62e76326 | 1113 | |
e857372a | 1114 | request->flags.noCache = true; |
edce4d98 | 1115 | } |
62e76326 | 1116 | |
0ef77270 | 1117 | /* ignore range header in non-GETs or non-HEADs */ |
c2a7cefd | 1118 | if (request->method == Http::METHOD_GET || request->method == Http::METHOD_HEAD) { |
56713d9a AR |
1119 | // XXX: initialize if we got here without HttpRequest::parseHeader() |
1120 | if (!request->range) | |
1121 | request->range = req_hdr->getRange(); | |
62e76326 | 1122 | |
1123 | if (request->range) { | |
e857372a | 1124 | request->flags.isRanged = true; |
62e76326 | 1125 | clientStreamNode *node = (clientStreamNode *)http->client_stream.tail->data; |
1126 | /* XXX: This is suboptimal. We should give the stream the range set, | |
1127 | * and thereby let the top of the stream set the offset when the | |
26ac0430 | 1128 | * size becomes known. As it is, we will end up requesting from 0 |
62e76326 | 1129 | * for evey -X range specification. |
1130 | * RBC - this may be somewhat wrong. We should probably set the range | |
1131 | * iter up at this point. | |
1132 | */ | |
1133 | node->readBuffer.offset = request->range->lowestOffset(0); | |
1134 | http->range_iter.pos = request->range->begin(); | |
24a8eaae | 1135 | http->range_iter.end = request->range->end(); |
62e76326 | 1136 | http->range_iter.valid = true; |
1137 | } | |
edce4d98 | 1138 | } |
62e76326 | 1139 | |
0ef77270 | 1140 | /* Only HEAD and GET requests permit a Range or Request-Range header. |
1141 | * If these headers appear on any other type of request, delete them now. | |
1142 | */ | |
1143 | else { | |
1144 | req_hdr->delById(HDR_RANGE); | |
1145 | req_hdr->delById(HDR_REQUEST_RANGE); | |
f0baf149 | 1146 | request->ignoreRange("neither HEAD nor GET"); |
0ef77270 | 1147 | } |
1148 | ||
a9925b40 | 1149 | if (req_hdr->has(HDR_AUTHORIZATION)) |
e857372a | 1150 | request->flags.auth = true; |
62e76326 | 1151 | |
46a1f562 | 1152 | clientCheckPinning(http); |
d67acb4e | 1153 | |
edce4d98 | 1154 | if (request->login[0] != '\0') |
e857372a | 1155 | request->flags.auth = true; |
62e76326 | 1156 | |
a9925b40 | 1157 | if (req_hdr->has(HDR_VIA)) { |
30abd221 | 1158 | String s = req_hdr->getList(HDR_VIA); |
62e76326 | 1159 | /* |
3c4fcf0f | 1160 | * ThisCache cannot be a member of Via header, "1.1 ThisCache" can. |
62e76326 | 1161 | * Note ThisCache2 has a space prepended to the hostname so we don't |
1162 | * accidentally match super-domains. | |
1163 | */ | |
1164 | ||
1165 | if (strListIsSubstr(&s, ThisCache2, ',')) { | |
1166 | debugObj(33, 1, "WARNING: Forwarding loop detected for:\n", | |
1167 | request, (ObjPackMethod) & httpRequestPack); | |
e857372a | 1168 | request->flags.loopDetected = true; |
62e76326 | 1169 | } |
1170 | ||
21f6708d | 1171 | #if USE_FORW_VIA_DB |
bb790702 | 1172 | fvdbCountVia(s.termedBuf()); |
62e76326 | 1173 | |
edce4d98 | 1174 | #endif |
62e76326 | 1175 | |
30abd221 | 1176 | s.clean(); |
edce4d98 | 1177 | } |
62e76326 | 1178 | |
21f6708d | 1179 | #if USE_FORW_VIA_DB |
62e76326 | 1180 | |
a9925b40 | 1181 | if (req_hdr->has(HDR_X_FORWARDED_FOR)) { |
30abd221 | 1182 | String s = req_hdr->getList(HDR_X_FORWARDED_FOR); |
bb790702 | 1183 | fvdbCountForw(s.termedBuf()); |
30abd221 | 1184 | s.clean(); |
edce4d98 | 1185 | } |
62e76326 | 1186 | |
edce4d98 | 1187 | #endif |
62e76326 | 1188 | |
c2a7cefd | 1189 | request->flags.cachable = http->request->maybeCacheable(); |
62e76326 | 1190 | |
edce4d98 | 1191 | if (clientHierarchical(http)) |
e857372a | 1192 | request->flags.hierarchical = true; |
62e76326 | 1193 | |
bf8fe701 | 1194 | debugs(85, 5, "clientInterpretRequestHeaders: REQ_NOCACHE = " << |
450fe1cb | 1195 | (request->flags.noCache ? "SET" : "NOT SET")); |
bf8fe701 | 1196 | debugs(85, 5, "clientInterpretRequestHeaders: REQ_CACHABLE = " << |
45e5102d | 1197 | (request->flags.cachable ? "SET" : "NOT SET")); |
bf8fe701 | 1198 | debugs(85, 5, "clientInterpretRequestHeaders: REQ_HIERARCHICAL = " << |
45e5102d | 1199 | (request->flags.hierarchical ? "SET" : "NOT SET")); |
62e76326 | 1200 | |
edce4d98 | 1201 | } |
1202 | ||
1203 | void | |
e166785a | 1204 | clientRedirectDoneWrapper(void *data, const HelperReply &result) |
edce4d98 | 1205 | { |
de31d06f | 1206 | ClientRequestContext *calloutContext = (ClientRequestContext *)data; |
db02222f | 1207 | |
de31d06f | 1208 | if (!calloutContext->httpStateIsValid()) |
62e76326 | 1209 | return; |
62e76326 | 1210 | |
de31d06f | 1211 | calloutContext->clientRedirectDone(result); |
1212 | } | |
1213 | ||
a8a0b1c2 EC |
1214 | void |
1215 | clientStoreIdDoneWrapper(void *data, const HelperReply &result) | |
1216 | { | |
1217 | ClientRequestContext *calloutContext = (ClientRequestContext *)data; | |
1218 | ||
1219 | if (!calloutContext->httpStateIsValid()) | |
1220 | return; | |
1221 | ||
1222 | calloutContext->clientStoreIdDone(result); | |
1223 | } | |
1224 | ||
de31d06f | 1225 | void |
e166785a | 1226 | ClientRequestContext::clientRedirectDone(const HelperReply &reply) |
de31d06f | 1227 | { |
190154cf | 1228 | HttpRequest *old_request = http->request; |
e166785a | 1229 | debugs(85, 5, HERE << "'" << http->uri << "' result=" << reply); |
de31d06f | 1230 | assert(redirect_state == REDIRECT_PENDING); |
1231 | redirect_state = REDIRECT_DONE; | |
62e76326 | 1232 | |
cf9f0261 | 1233 | // Put helper response Notes into the transaction state record (ALE) eventually |
d06e17ea | 1234 | // do it early to ensure that no matter what the outcome the notes are present. |
457857fe CT |
1235 | if (http->al != NULL) |
1236 | (void)SyncNotes(*http->al, *old_request); | |
1237 | ||
1238 | UpdateRequestNotes(http->getConn(), *old_request, reply.notes); | |
d06e17ea | 1239 | |
63fc9fb5 | 1240 | switch (reply.result) { |
d06e17ea AJ |
1241 | case HelperReply::Unknown: |
1242 | case HelperReply::TT: | |
1243 | // Handler in redirect.cc should have already mapped Unknown | |
1244 | // IF it contained valid entry for the old URL-rewrite helper protocol | |
1245 | debugs(85, DBG_IMPORTANT, "ERROR: URL rewrite helper returned invalid result code. Wrong helper? " << reply); | |
1246 | break; | |
1247 | ||
1248 | case HelperReply::BrokenHelper: | |
1249 | debugs(85, DBG_IMPORTANT, "ERROR: URL rewrite helper: " << reply << ", attempt #" << (redirect_fail_count+1) << " of 2"); | |
1250 | if (redirect_fail_count < 2) { // XXX: make this configurable ? | |
1251 | ++redirect_fail_count; | |
1252 | // reset state flag to try redirector again from scratch. | |
1253 | redirect_done = false; | |
1254 | } | |
1255 | break; | |
1256 | ||
1257 | case HelperReply::Error: | |
1258 | // no change to be done. | |
1259 | break; | |
62e76326 | 1260 | |
d06e17ea AJ |
1261 | case HelperReply::Okay: { |
1262 | // #1: redirect with a specific status code OK status=NNN url="..." | |
1263 | // #2: redirect with a default status code OK url="..." | |
1264 | // #3: re-write the URL OK rewrite-url="..." | |
1265 | ||
cf9f0261 CT |
1266 | const char *statusNote = reply.notes.findFirst("status"); |
1267 | const char *urlNote = reply.notes.findFirst("url"); | |
d06e17ea AJ |
1268 | |
1269 | if (urlNote != NULL) { | |
1270 | // HTTP protocol redirect to be done. | |
1271 | ||
1272 | // TODO: change default redirect status for appropriate requests | |
1273 | // Squid defaults to 302 status for now for better compatibility with old clients. | |
f11c8e2f | 1274 | // HTTP/1.0 client should get 302 (Http::scFound) |
955394ce AJ |
1275 | // HTTP/1.1 client contacting reverse-proxy should get 307 (Http::scTemporaryRedirect) |
1276 | // HTTP/1.1 client being diverted by forward-proxy should get 303 (Http::scSeeOther) | |
f11c8e2f | 1277 | Http::StatusCode status = Http::scFound; |
d06e17ea | 1278 | if (statusNote != NULL) { |
cf9f0261 | 1279 | const char * result = statusNote; |
955394ce | 1280 | status = static_cast<Http::StatusCode>(atoi(result)); |
d06e17ea | 1281 | } |
62e76326 | 1282 | |
955394ce | 1283 | if (status == Http::scMovedPermanently |
f11c8e2f | 1284 | || status == Http::scFound |
955394ce AJ |
1285 | || status == Http::scSeeOther |
1286 | || status == Http::scPermanentRedirect | |
1287 | || status == Http::scTemporaryRedirect) { | |
62e76326 | 1288 | http->redirect.status = status; |
cf9f0261 | 1289 | http->redirect.location = xstrdup(urlNote); |
e5b677f0 | 1290 | // TODO: validate the URL produced here is RFC 2616 compliant absolute URI |
62e76326 | 1291 | } else { |
cf9f0261 | 1292 | debugs(85, DBG_CRITICAL, "ERROR: URL-rewrite produces invalid " << status << " redirect Location: " << urlNote); |
62e76326 | 1293 | } |
d06e17ea AJ |
1294 | } else { |
1295 | // URL-rewrite wanted. Ew. | |
cf9f0261 | 1296 | urlNote = reply.notes.findFirst("rewrite-url"); |
d06e17ea AJ |
1297 | |
1298 | // prevent broken helpers causing too much damage. If old URL == new URL skip the re-write. | |
cf9f0261 | 1299 | if (urlNote != NULL && strcmp(urlNote, http->uri)) { |
d06e17ea AJ |
1300 | // XXX: validate the URL properly *without* generating a whole new request object right here. |
1301 | // XXX: the clone() should be done only AFTER we know the new URL is valid. | |
1302 | HttpRequest *new_request = old_request->clone(); | |
cf9f0261 | 1303 | if (urlParse(old_request->method, const_cast<char*>(urlNote), new_request)) { |
d06e17ea AJ |
1304 | debugs(61,2, HERE << "URL-rewriter diverts URL from " << urlCanonical(old_request) << " to " << urlCanonical(new_request)); |
1305 | ||
1306 | // update the new request to flag the re-writing was done on it | |
e857372a | 1307 | new_request->flags.redirected = true; |
d06e17ea AJ |
1308 | |
1309 | // unlink bodypipe from the old request. Not needed there any longer. | |
1310 | if (old_request->body_pipe != NULL) { | |
1311 | old_request->body_pipe = NULL; | |
1312 | debugs(61,2, HERE << "URL-rewriter diverts body_pipe " << new_request->body_pipe << | |
1313 | " from request " << old_request << " to " << new_request); | |
1314 | } | |
9be14530 | 1315 | |
d06e17ea AJ |
1316 | // update the current working ClientHttpRequest fields |
1317 | safe_free(http->uri); | |
1318 | http->uri = xstrdup(urlCanonical(new_request)); | |
1319 | HTTPMSGUNLOCK(old_request); | |
b248c2a3 AJ |
1320 | http->request = new_request; |
1321 | HTTPMSGLOCK(http->request); | |
d06e17ea AJ |
1322 | } else { |
1323 | debugs(85, DBG_CRITICAL, "ERROR: URL-rewrite produces invalid request: " << | |
cf9f0261 | 1324 | old_request->method << " " << urlNote << " " << old_request->http_ver); |
d06e17ea AJ |
1325 | delete new_request; |
1326 | } | |
9be14530 | 1327 | } |
74b48915 | 1328 | } |
edce4d98 | 1329 | } |
d06e17ea AJ |
1330 | break; |
1331 | } | |
62e76326 | 1332 | |
edce4d98 | 1333 | /* FIXME PIPELINE: This is innacurate during pipelining */ |
62e76326 | 1334 | |
73c36fd9 AJ |
1335 | if (http->getConn() != NULL && Comm::IsConnOpen(http->getConn()->clientConnection)) |
1336 | fd_note(http->getConn()->clientConnection->fd, http->uri); | |
62e76326 | 1337 | |
c8be6d7b | 1338 | assert(http->uri); |
62e76326 | 1339 | |
de31d06f | 1340 | http->doCallouts(); |
edce4d98 | 1341 | } |
1342 | ||
a8a0b1c2 EC |
1343 | /** |
1344 | * This method handles the different replies from StoreID helper. | |
1345 | */ | |
1346 | void | |
1347 | ClientRequestContext::clientStoreIdDone(const HelperReply &reply) | |
1348 | { | |
1349 | HttpRequest *old_request = http->request; | |
1350 | debugs(85, 5, "'" << http->uri << "' result=" << reply); | |
1351 | assert(store_id_state == REDIRECT_PENDING); | |
1352 | store_id_state = REDIRECT_DONE; | |
1353 | ||
cf9f0261 | 1354 | // Put helper response Notes into the transaction state record (ALE) eventually |
a8a0b1c2 | 1355 | // do it early to ensure that no matter what the outcome the notes are present. |
457857fe CT |
1356 | if (http->al != NULL) |
1357 | (void)SyncNotes(*http->al, *old_request); | |
1358 | ||
1359 | UpdateRequestNotes(http->getConn(), *old_request, reply.notes); | |
a8a0b1c2 EC |
1360 | |
1361 | switch (reply.result) { | |
1362 | case HelperReply::Unknown: | |
1363 | case HelperReply::TT: | |
1364 | // Handler in redirect.cc should have already mapped Unknown | |
1365 | // IF it contained valid entry for the old helper protocol | |
1366 | debugs(85, DBG_IMPORTANT, "ERROR: storeID helper returned invalid result code. Wrong helper? " << reply); | |
1367 | break; | |
1368 | ||
1369 | case HelperReply::BrokenHelper: | |
1370 | debugs(85, DBG_IMPORTANT, "ERROR: storeID helper: " << reply << ", attempt #" << (store_id_fail_count+1) << " of 2"); | |
1371 | if (store_id_fail_count < 2) { // XXX: make this configurable ? | |
1372 | ++store_id_fail_count; | |
1373 | // reset state flag to try StoreID again from scratch. | |
1374 | store_id_done = false; | |
1375 | } | |
1376 | break; | |
1377 | ||
1378 | case HelperReply::Error: | |
1379 | // no change to be done. | |
1380 | break; | |
1381 | ||
1382 | case HelperReply::Okay: { | |
cf9f0261 | 1383 | const char *urlNote = reply.notes.findFirst("store-id"); |
a8a0b1c2 EC |
1384 | |
1385 | // prevent broken helpers causing too much damage. If old URL == new URL skip the re-write. | |
cf9f0261 | 1386 | if (urlNote != NULL && strcmp(urlNote, http->uri) ) { |
a8a0b1c2 | 1387 | // Debug section required for some very specific cases. |
cf9f0261 CT |
1388 | debugs(85, 9, "Setting storeID with: " << urlNote ); |
1389 | http->request->store_id = urlNote; | |
1390 | http->store_id = urlNote; | |
a8a0b1c2 EC |
1391 | } |
1392 | } | |
1393 | break; | |
1394 | } | |
1395 | ||
1396 | http->doCallouts(); | |
1397 | } | |
1398 | ||
b50e327b AJ |
1399 | /** Test cache allow/deny configuration |
1400 | * Sets flags.cachable=1 if caching is not denied. | |
1401 | */ | |
edce4d98 | 1402 | void |
8e2745f4 | 1403 | ClientRequestContext::checkNoCache() |
edce4d98 | 1404 | { |
b50e327b AJ |
1405 | if (Config.accessList.noCache) { |
1406 | acl_checklist = clientAclChecklistCreate(Config.accessList.noCache, http); | |
1407 | acl_checklist->nonBlockingCheck(checkNoCacheDoneWrapper, this); | |
1408 | } else { | |
1409 | /* unless otherwise specified, we try to cache. */ | |
2efeb0b7 | 1410 | checkNoCacheDone(ACCESS_ALLOWED); |
b50e327b | 1411 | } |
edce4d98 | 1412 | } |
1413 | ||
de31d06f | 1414 | static void |
2efeb0b7 | 1415 | checkNoCacheDoneWrapper(allow_t answer, void *data) |
edce4d98 | 1416 | { |
de31d06f | 1417 | ClientRequestContext *calloutContext = (ClientRequestContext *) data; |
e4a67a80 | 1418 | |
de31d06f | 1419 | if (!calloutContext->httpStateIsValid()) |
1420 | return; | |
1421 | ||
1422 | calloutContext->checkNoCacheDone(answer); | |
8e2745f4 | 1423 | } |
4fb35c3c | 1424 | |
8e2745f4 | 1425 | void |
2efeb0b7 | 1426 | ClientRequestContext::checkNoCacheDone(const allow_t &answer) |
62e76326 | 1427 | { |
8e2745f4 | 1428 | acl_checklist = NULL; |
45e5102d | 1429 | http->request->flags.cachable = (answer == ACCESS_ALLOWED); |
de31d06f | 1430 | http->doCallouts(); |
edce4d98 | 1431 | } |
1432 | ||
cb4f4424 | 1433 | #if USE_OPENSSL |
e0c0d54c CT |
1434 | bool |
1435 | ClientRequestContext::sslBumpAccessCheck() | |
1436 | { | |
08097970 AR |
1437 | // If SSL connection tunneling or bumping decision has been made, obey it. |
1438 | const Ssl::BumpMode bumpMode = http->getConn()->sslBumpMode; | |
1439 | if (bumpMode != Ssl::bumpEnd) { | |
1440 | debugs(85, 5, HERE << "SslBump already decided (" << bumpMode << | |
1441 | "), " << "ignoring ssl_bump for " << http->getConn()); | |
71cae389 | 1442 | http->al->ssl.bumpMode = bumpMode; // inherited from bumped connection |
08097970 AR |
1443 | return false; |
1444 | } | |
e0c0d54c | 1445 | |
08097970 AR |
1446 | // If we have not decided yet, decide whether to bump now. |
1447 | ||
1448 | // Bumping here can only start with a CONNECT request on a bumping port | |
1449 | // (bumping of intercepted SSL conns is decided before we get 1st request). | |
1450 | // We also do not bump redirected CONNECT requests. | |
c2a7cefd | 1451 | if (http->request->method != Http::METHOD_CONNECT || http->redirect.status || |
6a25a046 FC |
1452 | !Config.accessList.ssl_bump || |
1453 | !http->getConn()->port->flags.tunnelSslBumping) { | |
71cae389 | 1454 | http->al->ssl.bumpMode = Ssl::bumpEnd; // SslBump does not apply; log - |
08097970 | 1455 | debugs(85, 5, HERE << "cannot SslBump this request"); |
e0c0d54c CT |
1456 | return false; |
1457 | } | |
08097970 AR |
1458 | |
1459 | // Do not bump during authentication: clients would not proxy-authenticate | |
1460 | // if we delay a 407 response and respond with 200 OK to CONNECT. | |
955394ce | 1461 | if (error && error->httpStatus == Http::scProxyAuthenticationRequired) { |
71cae389 | 1462 | http->al->ssl.bumpMode = Ssl::bumpEnd; // SslBump does not apply; log - |
08097970 AR |
1463 | debugs(85, 5, HERE << "no SslBump during proxy authentication"); |
1464 | return false; | |
1465 | } | |
1466 | ||
1467 | debugs(85, 5, HERE << "SslBump possible, checking ACL"); | |
1468 | ||
eb898410 AJ |
1469 | ACLFilledChecklist *aclChecklist = clientAclChecklistCreate(Config.accessList.ssl_bump, http); |
1470 | aclChecklist->nonBlockingCheck(sslBumpAccessCheckDoneWrapper, this); | |
08097970 | 1471 | return true; |
e0c0d54c CT |
1472 | } |
1473 | ||
f8901ea9 | 1474 | /** |
e0c0d54c CT |
1475 | * A wrapper function to use the ClientRequestContext::sslBumpAccessCheckDone method |
1476 | * as ACLFilledChecklist callback | |
1477 | */ | |
1478 | static void | |
2efeb0b7 | 1479 | sslBumpAccessCheckDoneWrapper(allow_t answer, void *data) |
e0c0d54c CT |
1480 | { |
1481 | ClientRequestContext *calloutContext = static_cast<ClientRequestContext *>(data); | |
9d5e7196 AJ |
1482 | |
1483 | if (!calloutContext->httpStateIsValid()) | |
1484 | return; | |
ed6163ef | 1485 | calloutContext->sslBumpAccessCheckDone(answer); |
e0c0d54c CT |
1486 | } |
1487 | ||
1488 | void | |
ed6163ef | 1489 | ClientRequestContext::sslBumpAccessCheckDone(const allow_t &answer) |
e0c0d54c | 1490 | { |
ed6163ef AJ |
1491 | if (!httpStateIsValid()) |
1492 | return; | |
1493 | ||
08097970 | 1494 | const Ssl::BumpMode bumpMode = answer == ACCESS_ALLOWED ? |
87f237a9 | 1495 | static_cast<Ssl::BumpMode>(answer.kind) : Ssl::bumpNone; |
08097970 | 1496 | http->sslBumpNeed(bumpMode); // for processRequest() to bump if needed |
71cae389 | 1497 | http->al->ssl.bumpMode = bumpMode; // for logging |
caf3666d | 1498 | |
e0c0d54c CT |
1499 | http->doCallouts(); |
1500 | } | |
1501 | #endif | |
1502 | ||
69660be0 | 1503 | /* |
1504 | * Identify requests that do not go through the store and client side stream | |
1505 | * and forward them to the appropriate location. All other requests, request | |
1506 | * them. | |
edce4d98 | 1507 | */ |
1508 | void | |
8e2745f4 | 1509 | ClientHttpRequest::processRequest() |
edce4d98 | 1510 | { |
7f06a3d8 | 1511 | debugs(85, 4, request->method << ' ' << uri); |
62e76326 | 1512 | |
c2a7cefd | 1513 | if (request->method == Http::METHOD_CONNECT && !redirect.status) { |
cb4f4424 | 1514 | #if USE_OPENSSL |
31281814 AJ |
1515 | if (sslBumpNeeded()) { |
1516 | sslBumpStart(); | |
1517 | return; | |
1518 | } | |
3712be3f | 1519 | #endif |
f84dd7eb | 1520 | getConn()->stopReading(); // tunnels read for themselves |
06521a10 | 1521 | tunnelStart(this, &out.size, &al->http.code, al); |
62e76326 | 1522 | return; |
edce4d98 | 1523 | } |
62e76326 | 1524 | |
8e2745f4 | 1525 | httpStart(); |
1526 | } | |
1527 | ||
1528 | void | |
1529 | ClientHttpRequest::httpStart() | |
1530 | { | |
559da936 | 1531 | PROF_start(httpStart); |
8e2745f4 | 1532 | logType = LOG_TAG_NONE; |
02c8dde5 | 1533 | debugs(85, 4, LogTags_str[logType] << " for '" << uri << "'"); |
bf8fe701 | 1534 | |
edce4d98 | 1535 | /* no one should have touched this */ |
8e2745f4 | 1536 | assert(out.offset == 0); |
edce4d98 | 1537 | /* Use the Stream Luke */ |
8e2745f4 | 1538 | clientStreamNode *node = (clientStreamNode *)client_stream.tail->data; |
1539 | clientStreamRead(node, this, node->readBuffer); | |
559da936 | 1540 | PROF_stop(httpStart); |
edce4d98 | 1541 | } |
0655fa4d | 1542 | |
cb4f4424 | 1543 | #if USE_OPENSSL |
3712be3f | 1544 | |
e0c0d54c | 1545 | void |
08097970 | 1546 | ClientHttpRequest::sslBumpNeed(Ssl::BumpMode mode) |
e0c0d54c | 1547 | { |
caf3666d | 1548 | debugs(83, 3, HERE << "sslBump required: "<< Ssl::bumpMode(mode)); |
08097970 | 1549 | sslBumpNeed_ = mode; |
3712be3f | 1550 | } |
1551 | ||
1552 | // called when comm_write has completed | |
1553 | static void | |
c8407295 | 1554 | SslBumpEstablish(const Comm::ConnectionPointer &, char *, size_t, Comm::Flag errflag, int, void *data) |
3712be3f | 1555 | { |
1556 | ClientHttpRequest *r = static_cast<ClientHttpRequest*>(data); | |
1557 | debugs(85, 5, HERE << "responded to CONNECT: " << r << " ? " << errflag); | |
1558 | ||
1559 | assert(r && cbdataReferenceValid(r)); | |
1560 | r->sslBumpEstablish(errflag); | |
1561 | } | |
1562 | ||
1563 | void | |
c8407295 | 1564 | ClientHttpRequest::sslBumpEstablish(Comm::Flag errflag) |
3712be3f | 1565 | { |
c8407295 AJ |
1566 | // Bail out quickly on Comm::ERR_CLOSING - close handlers will tidy up |
1567 | if (errflag == Comm::ERR_CLOSING) | |
3712be3f | 1568 | return; |
1569 | ||
1570 | if (errflag) { | |
1fa35be8 | 1571 | debugs(85, 3, HERE << "CONNECT response failure in SslBump: " << errflag); |
bbc83914 | 1572 | getConn()->clientConnection->close(); |
3712be3f | 1573 | return; |
1574 | } | |
1575 | ||
40d8be97 AR |
1576 | // We lack HttpReply which logRequest() uses to log the status code. |
1577 | // TODO: Use HttpReply instead of the "200 Connection established" string. | |
71cae389 | 1578 | al->http.code = 200; |
40d8be97 | 1579 | |
21512911 CT |
1580 | #if USE_AUTH |
1581 | // Preserve authentication info for the ssl-bumped request | |
1582 | if (request->auth_user_request != NULL) | |
cc1e110a | 1583 | getConn()->setAuth(request->auth_user_request, "SSL-bumped CONNECT"); |
21512911 | 1584 | #endif |
03f00a11 | 1585 | |
08097970 AR |
1586 | assert(sslBumpNeeded()); |
1587 | getConn()->switchToHttps(request, sslBumpNeed_); | |
3712be3f | 1588 | } |
1589 | ||
1590 | void | |
1591 | ClientHttpRequest::sslBumpStart() | |
1592 | { | |
08097970 AR |
1593 | debugs(85, 5, HERE << "Confirming " << Ssl::bumpMode(sslBumpNeed_) << |
1594 | "-bumped CONNECT tunnel on FD " << getConn()->clientConnection); | |
1595 | getConn()->sslBumpMode = sslBumpNeed_; | |
3712be3f | 1596 | |
08097970 | 1597 | // send an HTTP 200 response to kick client SSL negotiation |
3712be3f | 1598 | // TODO: Unify with tunnel.cc and add a Server(?) header |
b0388924 | 1599 | static const char *const conn_established = "HTTP/1.1 200 Connection established\r\n\r\n"; |
ec41b64c AJ |
1600 | AsyncCall::Pointer call = commCbCall(85, 5, "ClientSocketContext::sslBumpEstablish", |
1601 | CommIoCbPtrFun(&SslBumpEstablish, this)); | |
73c36fd9 | 1602 | Comm::Write(getConn()->clientConnection, conn_established, strlen(conn_established), call, NULL); |
3712be3f | 1603 | } |
1604 | ||
1605 | #endif | |
1606 | ||
0655fa4d | 1607 | bool |
1608 | ClientHttpRequest::gotEnough() const | |
1609 | { | |
86a2f789 | 1610 | /** TODO: should be querying the stream. */ |
7173d5b0 | 1611 | int64_t contentLength = |
06a5ae20 | 1612 | memObject()->getReply()->bodySize(request->method); |
0655fa4d | 1613 | assert(contentLength >= 0); |
1614 | ||
1615 | if (out.offset < contentLength) | |
1616 | return false; | |
1617 | ||
1618 | return true; | |
1619 | } | |
1620 | ||
86a2f789 | 1621 | void |
1622 | ClientHttpRequest::storeEntry(StoreEntry *newEntry) | |
1623 | { | |
1624 | entry_ = newEntry; | |
1625 | } | |
1626 | ||
0976f8db | 1627 | void |
1628 | ClientHttpRequest::loggingEntry(StoreEntry *newEntry) | |
1629 | { | |
1630 | if (loggingEntry_) | |
1bfe9ade | 1631 | loggingEntry_->unlock("ClientHttpRequest::loggingEntry"); |
0976f8db | 1632 | |
1633 | loggingEntry_ = newEntry; | |
1634 | ||
1635 | if (loggingEntry_) | |
1bfe9ade | 1636 | loggingEntry_->lock("ClientHttpRequest::loggingEntry"); |
0976f8db | 1637 | } |
86a2f789 | 1638 | |
de31d06f | 1639 | /* |
1640 | * doCallouts() - This function controls the order of "callout" | |
1641 | * executions, including non-blocking access control checks, the | |
1642 | * redirector, and ICAP. Previously, these callouts were chained | |
1643 | * together such that "clientAccessCheckDone()" would call | |
1644 | * "clientRedirectStart()" and so on. | |
1645 | * | |
1646 | * The ClientRequestContext (aka calloutContext) class holds certain | |
1647 | * state data for the callout/callback operations. Previously | |
1648 | * ClientHttpRequest would sort of hand off control to ClientRequestContext | |
1649 | * for a short time. ClientRequestContext would then delete itself | |
1650 | * and pass control back to ClientHttpRequest when all callouts | |
1651 | * were finished. | |
1652 | * | |
1653 | * This caused some problems for ICAP because we want to make the | |
1654 | * ICAP callout after checking ACLs, but before checking the no_cache | |
1655 | * list. We can't stuff the ICAP state into the ClientRequestContext | |
1656 | * class because we still need the ICAP state after ClientRequestContext | |
1657 | * goes away. | |
1658 | * | |
1659 | * Note that ClientRequestContext is created before the first call | |
1660 | * to doCallouts(). | |
1661 | * | |
1662 | * If one of the callouts notices that ClientHttpRequest is no | |
1663 | * longer valid, it should call cbdataReferenceDone() so that | |
1664 | * ClientHttpRequest's reference count goes to zero and it will get | |
1665 | * deleted. ClientHttpRequest will then delete ClientRequestContext. | |
1666 | * | |
1667 | * Note that we set the _done flags here before actually starting | |
1668 | * the callout. This is strictly for convenience. | |
1669 | */ | |
1670 | ||
82afb125 FC |
1671 | tos_t aclMapTOS (acl_tos * head, ACLChecklist * ch); |
1672 | nfmark_t aclMapNfmark (acl_nfmark * head, ACLChecklist * ch); | |
057f5854 | 1673 | |
de31d06f | 1674 | void |
1675 | ClientHttpRequest::doCallouts() | |
1676 | { | |
1677 | assert(calloutContext); | |
1678 | ||
6fca33e0 | 1679 | /*Save the original request for logging purposes*/ |
b248c2a3 AJ |
1680 | if (!calloutContext->http->al->request) { |
1681 | calloutContext->http->al->request = request; | |
1682 | HTTPMSGLOCK(calloutContext->http->al->request); | |
457857fe CT |
1683 | |
1684 | NotePairs ¬es = SyncNotes(*calloutContext->http->al, *calloutContext->http->request); | |
1685 | // Make the previously set client connection ID available as annotation. | |
1686 | if (ConnStateData *csd = calloutContext->http->getConn()) { | |
1687 | if (!csd->connectionTag().isEmpty()) | |
1688 | notes.add("clt_conn_tag", SBuf(csd->connectionTag()).c_str()); | |
1689 | } | |
b248c2a3 | 1690 | } |
6fca33e0 | 1691 | |
38450a50 | 1692 | if (!calloutContext->error) { |
87f237a9 | 1693 | // CVE-2009-0801: verify the Host: header is consistent with other known details. |
38450a50 CT |
1694 | if (!calloutContext->host_header_verify_done) { |
1695 | debugs(83, 3, HERE << "Doing calloutContext->hostHeaderVerify()"); | |
1696 | calloutContext->host_header_verify_done = true; | |
1697 | calloutContext->hostHeaderVerify(); | |
1698 | return; | |
1699 | } | |
fe97983f | 1700 | |
38450a50 CT |
1701 | if (!calloutContext->http_access_done) { |
1702 | debugs(83, 3, HERE << "Doing calloutContext->clientAccessCheck()"); | |
1703 | calloutContext->http_access_done = true; | |
1704 | calloutContext->clientAccessCheck(); | |
1705 | return; | |
1706 | } | |
de31d06f | 1707 | |
a83c6ed6 | 1708 | #if USE_ADAPTATION |
38450a50 CT |
1709 | if (!calloutContext->adaptation_acl_check_done) { |
1710 | calloutContext->adaptation_acl_check_done = true; | |
1711 | if (Adaptation::AccessCheck::Start( | |
87f237a9 | 1712 | Adaptation::methodReqmod, Adaptation::pointPreCache, |
af0ded40 | 1713 | request, NULL, calloutContext->http->al, this)) |
38450a50 CT |
1714 | return; // will call callback |
1715 | } | |
de31d06f | 1716 | #endif |
1717 | ||
38450a50 CT |
1718 | if (!calloutContext->redirect_done) { |
1719 | calloutContext->redirect_done = true; | |
1720 | assert(calloutContext->redirect_state == REDIRECT_NONE); | |
de31d06f | 1721 | |
38450a50 CT |
1722 | if (Config.Program.redirect) { |
1723 | debugs(83, 3, HERE << "Doing calloutContext->clientRedirectStart()"); | |
1724 | calloutContext->redirect_state = REDIRECT_PENDING; | |
1725 | calloutContext->clientRedirectStart(); | |
1726 | return; | |
1727 | } | |
de31d06f | 1728 | } |
de31d06f | 1729 | |
38450a50 CT |
1730 | if (!calloutContext->adapted_http_access_done) { |
1731 | debugs(83, 3, HERE << "Doing calloutContext->clientAccessCheck2()"); | |
1732 | calloutContext->adapted_http_access_done = true; | |
1733 | calloutContext->clientAccessCheck2(); | |
1734 | return; | |
1735 | } | |
533493da | 1736 | |
a8a0b1c2 EC |
1737 | if (!calloutContext->store_id_done) { |
1738 | calloutContext->store_id_done = true; | |
1739 | assert(calloutContext->store_id_state == REDIRECT_NONE); | |
1740 | ||
1741 | if (Config.Program.store_id) { | |
1742 | debugs(83, 3,"Doing calloutContext->clientStoreIdStart()"); | |
1743 | calloutContext->store_id_state = REDIRECT_PENDING; | |
1744 | calloutContext->clientStoreIdStart(); | |
1745 | return; | |
1746 | } | |
1747 | } | |
1748 | ||
38450a50 CT |
1749 | if (!calloutContext->interpreted_req_hdrs) { |
1750 | debugs(83, 3, HERE << "Doing clientInterpretRequestHeaders()"); | |
1751 | calloutContext->interpreted_req_hdrs = 1; | |
1752 | clientInterpretRequestHeaders(this); | |
1753 | } | |
57abaac0 | 1754 | |
38450a50 CT |
1755 | if (!calloutContext->no_cache_done) { |
1756 | calloutContext->no_cache_done = true; | |
de31d06f | 1757 | |
45e5102d | 1758 | if (Config.accessList.noCache && request->flags.cachable) { |
38450a50 CT |
1759 | debugs(83, 3, HERE << "Doing calloutContext->checkNoCache()"); |
1760 | calloutContext->checkNoCache(); | |
1761 | return; | |
1762 | } | |
de31d06f | 1763 | } |
38450a50 | 1764 | } // if !calloutContext->error |
de31d06f | 1765 | |
425de4c8 AJ |
1766 | if (!calloutContext->tosToClientDone) { |
1767 | calloutContext->tosToClientDone = true; | |
73c36fd9 | 1768 | if (getConn() != NULL && Comm::IsConnOpen(getConn()->clientConnection)) { |
c0941a6a | 1769 | ACLFilledChecklist ch(NULL, request, NULL); |
057f5854 | 1770 | ch.src_addr = request->client_addr; |
1771 | ch.my_addr = request->my_addr; | |
425de4c8 | 1772 | tos_t tos = aclMapTOS(Ip::Qos::TheConfig.tosToClient, &ch); |
3712be3f | 1773 | if (tos) |
73c36fd9 | 1774 | Ip::Qos::setSockTos(getConn()->clientConnection, tos); |
425de4c8 AJ |
1775 | } |
1776 | } | |
1777 | ||
1778 | if (!calloutContext->nfmarkToClientDone) { | |
1779 | calloutContext->nfmarkToClientDone = true; | |
73c36fd9 | 1780 | if (getConn() != NULL && Comm::IsConnOpen(getConn()->clientConnection)) { |
425de4c8 AJ |
1781 | ACLFilledChecklist ch(NULL, request, NULL); |
1782 | ch.src_addr = request->client_addr; | |
1783 | ch.my_addr = request->my_addr; | |
1784 | nfmark_t mark = aclMapNfmark(Ip::Qos::TheConfig.nfmarkToClient, &ch); | |
1785 | if (mark) | |
73c36fd9 | 1786 | Ip::Qos::setSockNfmark(getConn()->clientConnection, mark); |
3712be3f | 1787 | } |
057f5854 | 1788 | } |
1789 | ||
cb4f4424 | 1790 | #if USE_OPENSSL |
7a957a93 AR |
1791 | // We need to check for SslBump even if the calloutContext->error is set |
1792 | // because bumping may require delaying the error until after CONNECT. | |
e0c0d54c CT |
1793 | if (!calloutContext->sslBumpCheckDone) { |
1794 | calloutContext->sslBumpCheckDone = true; | |
1795 | if (calloutContext->sslBumpAccessCheck()) | |
1796 | return; | |
1797 | /* else no ssl bump required*/ | |
1798 | } | |
d2565320 | 1799 | #endif |
e0c0d54c | 1800 | |
2bd84e5f | 1801 | if (calloutContext->error) { |
a8a0b1c2 EC |
1802 | const char *storeUri = request->storeId(); |
1803 | StoreEntry *e= storeCreateEntry(storeUri, storeUri, request->flags, request->method); | |
cb4f4424 | 1804 | #if USE_OPENSSL |
08097970 | 1805 | if (sslBumpNeeded()) { |
2bd84e5f CT |
1806 | // set final error but delay sending until we bump |
1807 | Ssl::ServerBump *srvBump = new Ssl::ServerBump(request, e); | |
1808 | errorAppendEntry(e, calloutContext->error); | |
1809 | calloutContext->error = NULL; | |
1810 | getConn()->setServerBump(srvBump); | |
1bfe9ade | 1811 | e->unlock("ClientHttpRequest::doCallouts+sslBumpNeeded"); |
87f237a9 | 1812 | } else |
2bd84e5f CT |
1813 | #endif |
1814 | { | |
7a957a93 | 1815 | // send the error to the client now |
2bd84e5f CT |
1816 | clientStreamNode *node = (clientStreamNode *)client_stream.tail->prev->data; |
1817 | clientReplyContext *repContext = dynamic_cast<clientReplyContext *>(node->data.getRaw()); | |
1818 | assert (repContext); | |
f0baf149 | 1819 | repContext->setReplyToStoreEntry(e, "immediate SslBump error"); |
2bd84e5f CT |
1820 | errorAppendEntry(e, calloutContext->error); |
1821 | calloutContext->error = NULL; | |
1822 | if (calloutContext->readNextRequest) | |
1823 | getConn()->flags.readMore = true; // resume any pipeline reads. | |
1824 | node = (clientStreamNode *)client_stream.tail->data; | |
1825 | clientStreamRead(node, this, node->readBuffer); | |
1bfe9ade | 1826 | e->unlock("ClientHttpRequest::doCallouts-sslBumpNeeded"); |
2bd84e5f CT |
1827 | return; |
1828 | } | |
1829 | } | |
1830 | ||
de31d06f | 1831 | cbdataReferenceDone(calloutContext->http); |
1832 | delete calloutContext; | |
1833 | calloutContext = NULL; | |
de31d06f | 1834 | #if HEADERS_LOG |
1835 | ||
1836 | headersLog(0, 1, request->method, request); | |
1837 | #endif | |
1838 | ||
58d7150d | 1839 | debugs(83, 3, HERE << "calling processRequest()"); |
de31d06f | 1840 | processRequest(); |
3ff65596 AR |
1841 | |
1842 | #if ICAP_CLIENT | |
1843 | Adaptation::Icap::History::Pointer ih = request->icapHistory(); | |
1844 | if (ih != NULL) | |
1845 | ih->logType = logType; | |
1846 | #endif | |
de31d06f | 1847 | } |
1848 | ||
32d002cb | 1849 | #if !_USE_INLINE_ |
86a2f789 | 1850 | #include "client_side_request.cci" |
1851 | #endif | |
de31d06f | 1852 | |
a83c6ed6 | 1853 | #if USE_ADAPTATION |
a22e6cd3 AR |
1854 | /// Initiate an asynchronous adaptation transaction which will call us back. |
1855 | void | |
1856 | ClientHttpRequest::startAdaptation(const Adaptation::ServiceGroupPointer &g) | |
3b299123 | 1857 | { |
a22e6cd3 | 1858 | debugs(85, 3, HERE << "adaptation needed for " << this); |
a83c6ed6 AR |
1859 | assert(!virginHeadSource); |
1860 | assert(!adaptedBodySource); | |
a22e6cd3 | 1861 | virginHeadSource = initiateAdaptation( |
af0ded40 | 1862 | new Adaptation::Iterator(request, NULL, al, g)); |
a83c6ed6 | 1863 | |
e1381638 | 1864 | // we could try to guess whether we can bypass this adaptation |
a22e6cd3 | 1865 | // initiation failure, but it should not really happen |
4299f876 | 1866 | Must(initiated(virginHeadSource)); |
de31d06f | 1867 | } |
1868 | ||
1869 | void | |
3af10ac0 | 1870 | ClientHttpRequest::noteAdaptationAnswer(const Adaptation::Answer &answer) |
de31d06f | 1871 | { |
de31d06f | 1872 | assert(cbdataReferenceValid(this)); // indicates bug |
3af10ac0 AR |
1873 | clearAdaptation(virginHeadSource); |
1874 | assert(!adaptedBodySource); | |
1875 | ||
1876 | switch (answer.kind) { | |
1877 | case Adaptation::Answer::akForward: | |
b248c2a3 | 1878 | handleAdaptedHeader(const_cast<HttpMsg*>(answer.message.getRaw())); |
3af10ac0 AR |
1879 | break; |
1880 | ||
1881 | case Adaptation::Answer::akBlock: | |
1882 | handleAdaptationBlock(answer); | |
1883 | break; | |
1884 | ||
1885 | case Adaptation::Answer::akError: | |
1886 | handleAdaptationFailure(ERR_DETAIL_CLT_REQMOD_ABORT, !answer.final); | |
1887 | break; | |
1888 | } | |
1889 | } | |
1890 | ||
1891 | void | |
ec4d1a1d | 1892 | ClientHttpRequest::handleAdaptedHeader(HttpMsg *msg) |
3af10ac0 | 1893 | { |
5f8252d2 | 1894 | assert(msg); |
1895 | ||
b044675d | 1896 | if (HttpRequest *new_req = dynamic_cast<HttpRequest*>(msg)) { |
200ac359 | 1897 | /* |
5f8252d2 | 1898 | * Replace the old request with the new request. |
200ac359 | 1899 | */ |
6dd9f4bd | 1900 | HTTPMSGUNLOCK(request); |
b248c2a3 AJ |
1901 | request = new_req; |
1902 | HTTPMSGLOCK(request); | |
11f62bfb AJ |
1903 | |
1904 | // update the new message to flag whether URL re-writing was done on it | |
1905 | if (strcmp(urlCanonical(request),uri) != 0) | |
1906 | request->flags.redirected = 1; | |
1907 | ||
200ac359 | 1908 | /* |
1909 | * Store the new URI for logging | |
1910 | */ | |
1911 | xfree(uri); | |
1912 | uri = xstrdup(urlCanonical(request)); | |
1913 | setLogUri(this, urlCanonicalClean(request)); | |
914b89a2 | 1914 | assert(request->method.id()); |
b044675d | 1915 | } else if (HttpReply *new_rep = dynamic_cast<HttpReply*>(msg)) { |
1916 | debugs(85,3,HERE << "REQMOD reply is HTTP reply"); | |
1917 | ||
5f8252d2 | 1918 | // subscribe to receive reply body |
1919 | if (new_rep->body_pipe != NULL) { | |
a83c6ed6 | 1920 | adaptedBodySource = new_rep->body_pipe; |
d222a56c HN |
1921 | int consumer_ok = adaptedBodySource->setConsumerIfNotLate(this); |
1922 | assert(consumer_ok); | |
5f8252d2 | 1923 | } |
1924 | ||
b044675d | 1925 | clientStreamNode *node = (clientStreamNode *)client_stream.tail->prev->data; |
1926 | clientReplyContext *repContext = dynamic_cast<clientReplyContext *>(node->data.getRaw()); | |
ea25a575 | 1927 | assert(repContext); |
b044675d | 1928 | repContext->createStoreEntry(request->method, request->flags); |
1929 | ||
1930 | EBIT_CLR(storeEntry()->flags, ENTRY_FWD_HDR_WAIT); | |
1931 | request_satisfaction_mode = true; | |
1932 | request_satisfaction_offset = 0; | |
1933 | storeEntry()->replaceHttpReply(new_rep); | |
97ae5196 | 1934 | storeEntry()->timestampsSet(); |
cb4c4288 | 1935 | |
a83c6ed6 | 1936 | if (!adaptedBodySource) // no body |
cb4c4288 | 1937 | storeEntry()->complete(); |
b044675d | 1938 | clientGetMoreData(node, this); |
200ac359 | 1939 | } |
de31d06f | 1940 | |
5f8252d2 | 1941 | // we are done with getting headers (but may be receiving body) |
a83c6ed6 | 1942 | clearAdaptation(virginHeadSource); |
5f8252d2 | 1943 | |
b044675d | 1944 | if (!request_satisfaction_mode) |
1945 | doCallouts(); | |
de31d06f | 1946 | } |
1947 | ||
1948 | void | |
3af10ac0 | 1949 | ClientHttpRequest::handleAdaptationBlock(const Adaptation::Answer &answer) |
de31d06f | 1950 | { |
3af10ac0 AR |
1951 | request->detailError(ERR_ACCESS_DENIED, ERR_DETAIL_REQMOD_BLOCK); |
1952 | AclMatchedName = answer.ruleId.termedBuf(); | |
1953 | assert(calloutContext); | |
1954 | calloutContext->clientAccessCheckDone(ACCESS_DENIED); | |
1955 | AclMatchedName = NULL; | |
de31d06f | 1956 | } |
1957 | ||
0ad2b63b CT |
1958 | void |
1959 | ClientHttpRequest::resumeBodyStorage() | |
1960 | { | |
e83cdc25 | 1961 | if (!adaptedBodySource) |
0ad2b63b CT |
1962 | return; |
1963 | ||
1964 | noteMoreBodyDataAvailable(adaptedBodySource); | |
1965 | } | |
1966 | ||
de31d06f | 1967 | void |
1cf238db | 1968 | ClientHttpRequest::noteMoreBodyDataAvailable(BodyPipe::Pointer) |
de31d06f | 1969 | { |
5f8252d2 | 1970 | assert(request_satisfaction_mode); |
a83c6ed6 | 1971 | assert(adaptedBodySource != NULL); |
5f8252d2 | 1972 | |
0ad2b63b | 1973 | if (size_t contentSize = adaptedBodySource->buf().contentSize()) { |
4dc2b072 | 1974 | const size_t spaceAvailable = storeEntry()->bytesWanted(Range<size_t>(0,contentSize)); |
0ad2b63b CT |
1975 | |
1976 | if (spaceAvailable < contentSize ) { | |
1977 | // No or partial body data consuming | |
1978 | typedef NullaryMemFunT<ClientHttpRequest> Dialer; | |
1979 | AsyncCall::Pointer call = asyncCall(93, 5, "ClientHttpRequest::resumeBodyStorage", | |
1980 | Dialer(this, &ClientHttpRequest::resumeBodyStorage)); | |
1981 | storeEntry()->deferProducer(call); | |
1982 | } | |
1983 | ||
4dc2b072 | 1984 | if (!spaceAvailable) |
0ad2b63b CT |
1985 | return; |
1986 | ||
1987 | if (spaceAvailable < contentSize ) | |
1988 | contentSize = spaceAvailable; | |
1989 | ||
a83c6ed6 | 1990 | BodyPipeCheckout bpc(*adaptedBodySource); |
0ad2b63b | 1991 | const StoreIOBuffer ioBuf(&bpc.buf, request_satisfaction_offset, contentSize); |
5f8252d2 | 1992 | storeEntry()->write(ioBuf); |
0ad2b63b CT |
1993 | // assume StoreEntry::write() writes the entire ioBuf |
1994 | request_satisfaction_offset += ioBuf.length; | |
4ce0e99b | 1995 | bpc.buf.consume(contentSize); |
5f8252d2 | 1996 | bpc.checkIn(); |
1997 | } | |
1998 | ||
a83c6ed6 | 1999 | if (adaptedBodySource->exhausted()) |
5f8252d2 | 2000 | endRequestSatisfaction(); |
2001 | // else wait for more body data | |
de31d06f | 2002 | } |
2003 | ||
2004 | void | |
1cf238db | 2005 | ClientHttpRequest::noteBodyProductionEnded(BodyPipe::Pointer) |
de31d06f | 2006 | { |
a83c6ed6 | 2007 | assert(!virginHeadSource); |
0ad2b63b CT |
2008 | // should we end request satisfaction now? |
2009 | if (adaptedBodySource != NULL && adaptedBodySource->exhausted()) | |
5f8252d2 | 2010 | endRequestSatisfaction(); |
5f8252d2 | 2011 | } |
3b299123 | 2012 | |
5f8252d2 | 2013 | void |
26ac0430 AJ |
2014 | ClientHttpRequest::endRequestSatisfaction() |
2015 | { | |
5f8252d2 | 2016 | debugs(85,4, HERE << this << " ends request satisfaction"); |
2017 | assert(request_satisfaction_mode); | |
a83c6ed6 | 2018 | stopConsumingFrom(adaptedBodySource); |
3b299123 | 2019 | |
5f8252d2 | 2020 | // TODO: anything else needed to end store entry formation correctly? |
2021 | storeEntry()->complete(); | |
2022 | } | |
de31d06f | 2023 | |
5f8252d2 | 2024 | void |
1cf238db | 2025 | ClientHttpRequest::noteBodyProducerAborted(BodyPipe::Pointer) |
5f8252d2 | 2026 | { |
a83c6ed6 AR |
2027 | assert(!virginHeadSource); |
2028 | stopConsumingFrom(adaptedBodySource); | |
eae3a9a6 AR |
2029 | |
2030 | debugs(85,3, HERE << "REQMOD body production failed"); | |
2031 | if (request_satisfaction_mode) { // too late to recover or serve an error | |
2032 | request->detailError(ERR_ICAP_FAILURE, ERR_DETAIL_CLT_REQMOD_RESP_BODY); | |
73c36fd9 | 2033 | const Comm::ConnectionPointer c = getConn()->clientConnection; |
e7cea0ed AJ |
2034 | Must(Comm::IsConnOpen(c)); |
2035 | c->close(); // drastic, but we may be writing a response already | |
eae3a9a6 AR |
2036 | } else { |
2037 | handleAdaptationFailure(ERR_DETAIL_CLT_REQMOD_REQ_BODY); | |
2038 | } | |
5f8252d2 | 2039 | } |
3b299123 | 2040 | |
5f8252d2 | 2041 | void |
64b66b76 | 2042 | ClientHttpRequest::handleAdaptationFailure(int errDetail, bool bypassable) |
5f8252d2 | 2043 | { |
a83c6ed6 | 2044 | debugs(85,3, HERE << "handleAdaptationFailure(" << bypassable << ")"); |
3b299123 | 2045 | |
5f8252d2 | 2046 | const bool usedStore = storeEntry() && !storeEntry()->isEmpty(); |
2047 | const bool usedPipe = request->body_pipe != NULL && | |
26ac0430 | 2048 | request->body_pipe->consumedSize() > 0; |
3b299123 | 2049 | |
9d4d7c5e | 2050 | if (bypassable && !usedStore && !usedPipe) { |
2051 | debugs(85,3, HERE << "ICAP REQMOD callout failed, bypassing: " << calloutContext); | |
5f8252d2 | 2052 | if (calloutContext) |
2053 | doCallouts(); | |
2054 | return; | |
2055 | } | |
3b299123 | 2056 | |
5f8252d2 | 2057 | debugs(85,3, HERE << "ICAP REQMOD callout failed, responding with error"); |
3b299123 | 2058 | |
5f8252d2 | 2059 | clientStreamNode *node = (clientStreamNode *)client_stream.tail->prev->data; |
2060 | clientReplyContext *repContext = dynamic_cast<clientReplyContext *>(node->data.getRaw()); | |
2061 | assert(repContext); | |
de31d06f | 2062 | |
26ac0430 | 2063 | // The original author of the code also wanted to pass an errno to |
5f8252d2 | 2064 | // setReplyToError, but it seems unlikely that the errno reflects the |
2065 | // true cause of the error at this point, so I did not pass it. | |
2bd84e5f CT |
2066 | if (calloutContext) { |
2067 | Ip::Address noAddr; | |
4dd643d5 | 2068 | noAddr.setNoAddr(); |
2bd84e5f | 2069 | ConnStateData * c = getConn(); |
955394ce | 2070 | calloutContext->error = clientBuildError(ERR_ICAP_FAILURE, Http::scInternalServerError, |
87f237a9 A |
2071 | NULL, |
2072 | c != NULL ? c->clientConnection->remote : noAddr, | |
2073 | request | |
2074 | ); | |
79fc6915 | 2075 | #if USE_AUTH |
87f237a9 | 2076 | calloutContext->error->auth_user_request = |
cc1e110a | 2077 | c != NULL && c->getAuth() != NULL ? c->getAuth() : request->auth_user_request; |
79fc6915 | 2078 | #endif |
129fe2a1 | 2079 | calloutContext->error->detailError(errDetail); |
2bd84e5f | 2080 | calloutContext->readNextRequest = true; |
7830d88a FC |
2081 | if (c != NULL) |
2082 | c->expectNoForwarding(); | |
2bd84e5f CT |
2083 | doCallouts(); |
2084 | } | |
2085 | //else if(calloutContext == NULL) is it possible? | |
de31d06f | 2086 | } |
2087 | ||
2088 | #endif |