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41462d93 | 1 | /* |
41462d93 | 2 | * DEBUG: section 17 Request Forwarding |
3 | * AUTHOR: Duane Wessels | |
4 | * | |
2b6662ba | 5 | * SQUID Web Proxy Cache http://www.squid-cache.org/ |
e25c139f | 6 | * ---------------------------------------------------------- |
41462d93 | 7 | * |
2b6662ba | 8 | * Squid is the result of efforts by numerous individuals from |
9 | * the Internet community; see the CONTRIBUTORS file for full | |
10 | * details. Many organizations have provided support for Squid's | |
11 | * development; see the SPONSORS file for full details. Squid is | |
12 | * Copyrighted (C) 2001 by the Regents of the University of | |
13 | * California; see the COPYRIGHT file for full details. Squid | |
14 | * incorporates software developed and/or copyrighted by other | |
15 | * sources; see the CREDITS file for full details. | |
41462d93 | 16 | * |
17 | * This program is free software; you can redistribute it and/or modify | |
18 | * it under the terms of the GNU General Public License as published by | |
19 | * the Free Software Foundation; either version 2 of the License, or | |
20 | * (at your option) any later version. | |
26ac0430 | 21 | * |
41462d93 | 22 | * This program is distributed in the hope that it will be useful, |
23 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
24 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
25 | * GNU General Public License for more details. | |
26ac0430 | 26 | * |
41462d93 | 27 | * You should have received a copy of the GNU General Public License |
28 | * along with this program; if not, write to the Free Software | |
cbdec147 | 29 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
e25c139f | 30 | * |
41462d93 | 31 | */ |
32 | ||
33 | ||
f7f3304a | 34 | #include "squid-old.h" |
b6b6f466 | 35 | #include "forward.h" |
c0941a6a AR |
36 | #include "acl/FilledChecklist.h" |
37 | #include "acl/Gadgets.h" | |
5ae65581 | 38 | #include "anyp/PortCfg.h" |
25b481e6 | 39 | #include "CacheManager.h" |
f9b72e0c | 40 | #include "comm/Connection.h" |
aed188fd | 41 | #include "comm/ConnOpener.h" |
cfd66529 | 42 | #include "CommCalls.h" |
d841c88d | 43 | #include "comm/Loops.h" |
aa839030 | 44 | #include "event.h" |
45 | #include "errorpage.h" | |
46 | #include "fde.h" | |
bbaf2685 | 47 | #include "hier_code.h" |
924f73bc | 48 | #include "HttpReply.h" |
aa839030 | 49 | #include "HttpRequest.h" |
425de4c8 | 50 | #include "ip/QosConfig.h" |
aa839030 | 51 | #include "MemObject.h" |
781ce8ff | 52 | #include "pconn.h" |
cfd66529 | 53 | #include "PeerSelectState.h" |
aa839030 | 54 | #include "SquidTime.h" |
55 | #include "Store.h" | |
9b5c4a9a | 56 | #include "icmp/net_db.h" |
96d89ea0 | 57 | #include "ip/Intercept.h" |
407b9bb1 | 58 | #include "ip/tools.h" |
8822ebee | 59 | #include "mgr/Registration.h" |
4db984be CT |
60 | #if USE_SSL |
61 | #include "ssl/support.h" | |
4d16918e | 62 | #include "ssl/ErrorDetail.h" |
fd4624d7 | 63 | #include "ssl/ServerBump.h" |
4db984be | 64 | #endif |
cfd66529 | 65 | |
6b679a01 | 66 | static PSC fwdPeerSelectionCompleteWrapper; |
575d05c4 | 67 | static CLCB fwdServerClosedWrapper; |
b6b6f466 | 68 | #if USE_SSL |
69 | static PF fwdNegotiateSSLWrapper; | |
70 | #endif | |
b6b6f466 | 71 | static CNCB fwdConnectDoneWrapper; |
72 | ||
8ddcc35d | 73 | static OBJH fwdStats; |
74 | ||
75 | #define MAX_FWD_STATS_IDX 9 | |
9977e14b | 76 | static int FwdReplyCodes[MAX_FWD_STATS_IDX + 1][HTTP_INVALID_HEADER + 1]; |
db1cd23c | 77 | |
781ce8ff | 78 | static PconnPool *fwdPconnPool = new PconnPool("server-side"); |
b6b6f466 | 79 | CBDATA_CLASS_INIT(FwdState); |
781ce8ff | 80 | |
429871db | 81 | void |
82 | FwdState::abort(void* d) | |
83 | { | |
84 | FwdState* fwd = (FwdState*)d; | |
6ecaf21a | 85 | Pointer tmp = fwd; // Grab a temporary pointer to keep the object alive during our scope. |
429871db | 86 | |
6b679a01 | 87 | if (Comm::IsConnOpen(fwd->serverConnection())) { |
5229395c | 88 | comm_remove_close_handler(fwd->serverConnection()->fd, fwdServerClosedWrapper, fwd); |
cff02fa6 | 89 | } |
00ae51e4 | 90 | fwd->serverDestinations.clean(); |
429871db | 91 | fwd->self = NULL; |
92 | } | |
93 | ||
b6b6f466 | 94 | /**** PUBLIC INTERFACE ********************************************************/ |
c7f9eb6d | 95 | |
be364179 | 96 | FwdState::FwdState(const Comm::ConnectionPointer &client, StoreEntry * e, HttpRequest * r) |
db1cd23c | 97 | { |
3157a816 | 98 | debugs(17, 2, HERE << "Forwarding client request " << client << ", url=" << e->url() ); |
b6b6f466 | 99 | entry = e; |
5c336a3b | 100 | clientConn = client; |
6dd9f4bd | 101 | request = HTTPMSGLOCK(r); |
85563fd9 | 102 | pconnRace = raceImpossible; |
b6b6f466 | 103 | start_t = squid_curtime; |
00ae51e4 | 104 | serverDestinations.reserve(Config.forward_max_tries); |
3d0ac046 | 105 | e->lock(); |
b6b6f466 | 106 | EBIT_SET(e->flags, ENTRY_FWD_HDR_WAIT); |
7a0fb323 | 107 | } |
108 | ||
109 | // Called once, right after object creation, when it is safe to set self | |
fc68f6b1 | 110 | void FwdState::start(Pointer aSelf) |
111 | { | |
7a0fb323 | 112 | // Protect ourselves from being destroyed when the only Server pointing |
113 | // to us is gone (while we expect to talk to more Servers later). | |
114 | // Once we set self, we are responsible for clearing it when we do not | |
115 | // expect to talk to any servers. | |
116 | self = aSelf; // refcounted | |
117 | ||
118 | // We hope that either the store entry aborts or peer is selected. | |
119 | // Otherwise we are going to leak our object. | |
34266cde | 120 | |
3900307b | 121 | entry->registerAbort(FwdState::abort, this); |
bfe4e2fe AJ |
122 | |
123 | // Bug 3243: CVE 2009-0801 | |
124 | // Bypass of browser same-origin access control in intercepted communication | |
125 | // To resolve this we must force DIRECT and only to the original client destination. | |
2962f8b8 AJ |
126 | const bool isIntercepted = request && !request->flags.redirected && (request->flags.intercepted || request->flags.spoof_client_ip); |
127 | const bool useOriginalDst = Config.onoff.client_dst_passthru || (request && !request->flags.hostVerified); | |
128 | if (isIntercepted && useOriginalDst) { | |
d7ce0bcd | 129 | selectPeerForIntercepted(); |
bfe4e2fe AJ |
130 | // destination "found". continue with the forwarding. |
131 | startConnectionOrFail(); | |
132 | } else { | |
133 | // do full route options selection | |
134 | peerSelect(&serverDestinations, request, entry, fwdPeerSelectionCompleteWrapper, this); | |
135 | } | |
db1cd23c | 136 | } |
137 | ||
d7ce0bcd AR |
138 | /// bypasses peerSelect() when dealing with intercepted requests |
139 | void | |
140 | FwdState::selectPeerForIntercepted() | |
141 | { | |
142 | // use pinned connection if available | |
143 | Comm::ConnectionPointer p; | |
144 | if (ConnStateData *client = request->pinnedConnection()) | |
145 | p = client->validatePinnedConnection(request, NULL); | |
146 | ||
147 | if (p != NULL && Comm::IsConnOpen(p)) { | |
148 | debugs(17, 3, HERE << "reusing a pinned conn: " << *p); | |
149 | /* duplicate peerSelectPinned() effects */ | |
150 | p->peerType = PINNED; | |
151 | entry->ping_status = PING_DONE; /* Skip ICP */ | |
152 | } else { | |
d7ce0bcd AR |
153 | p = new Comm::Connection(); |
154 | p->peerType = ORIGINAL_DST; | |
155 | p->remote = clientConn->local; | |
156 | getOutgoingAddress(request, p); | |
061bbdec | 157 | debugs(17, 3, HERE << "opening a new conn: " << *p); |
d7ce0bcd AR |
158 | } |
159 | ||
160 | serverDestinations.push_back(p); | |
161 | } | |
162 | ||
802a8c1d | 163 | void |
164 | FwdState::completed() | |
41462d93 | 165 | { |
fc68f6b1 | 166 | if (flags.forward_completed == 1) { |
167 | debugs(17, 1, HERE << "FwdState::completed called on a completed request! Bad!"); | |
168 | return; | |
169 | } | |
170 | ||
171 | flags.forward_completed = 1; | |
802a8c1d | 172 | |
c4a88a3e CT |
173 | if (EBIT_TEST(entry->flags, ENTRY_ABORTED)) { |
174 | debugs(17, 3, HERE << "entry aborted"); | |
175 | return ; | |
176 | } | |
177 | ||
bc87dc25 | 178 | #if URL_CHECKSUM_DEBUG |
62e76326 | 179 | |
b6b6f466 | 180 | entry->mem_obj->checkUrlChecksum(); |
225644d7 | 181 | #endif |
62e76326 | 182 | |
b6b6f466 | 183 | if (entry->store_status == STORE_PENDING) { |
184 | if (entry->isEmpty()) { | |
185 | assert(err); | |
186 | errorAppendEntry(entry, err); | |
187 | err = NULL; | |
62e76326 | 188 | } else { |
b6b6f466 | 189 | EBIT_CLR(entry->flags, ENTRY_FWD_HDR_WAIT); |
190 | entry->complete(); | |
d88e3c49 | 191 | entry->releaseRequest(); |
62e76326 | 192 | } |
f563eea9 | 193 | } |
62e76326 | 194 | |
b6b6f466 | 195 | if (storePendingNClients(entry) > 0) |
196 | assert(!EBIT_TEST(entry->flags, ENTRY_FWD_HDR_WAIT)); | |
62e76326 | 197 | |
802a8c1d | 198 | } |
199 | ||
200 | FwdState::~FwdState() | |
201 | { | |
202 | debugs(17, 3, HERE << "FwdState destructor starting"); | |
fc68f6b1 | 203 | |
802a8c1d | 204 | if (! flags.forward_completed) |
fc68f6b1 | 205 | completed(); |
802a8c1d | 206 | |
9d2760b6 AR |
207 | doneWithRetries(); |
208 | ||
6dd9f4bd | 209 | HTTPMSGUNLOCK(request); |
62e76326 | 210 | |
913524f0 | 211 | delete err; |
62e76326 | 212 | |
3900307b | 213 | entry->unregisterAbort(); |
429871db | 214 | |
97b5e68f | 215 | entry->unlock(); |
62e76326 | 216 | |
b6b6f466 | 217 | entry = NULL; |
62e76326 | 218 | |
e3a4aecc AJ |
219 | if (calls.connector != NULL) { |
220 | calls.connector->cancel("FwdState destructed"); | |
221 | calls.connector = NULL; | |
222 | } | |
223 | ||
6b679a01 | 224 | if (Comm::IsConnOpen(serverConn)) { |
5229395c AJ |
225 | comm_remove_close_handler(serverConnection()->fd, fwdServerClosedWrapper, this); |
226 | debugs(17, 3, HERE << "closing FD " << serverConnection()->fd); | |
00ae51e4 | 227 | serverConn->close(); |
b6b6f466 | 228 | } |
fc68f6b1 | 229 | |
00ae51e4 | 230 | serverDestinations.clean(); |
cfd66529 | 231 | |
b6b6f466 | 232 | debugs(17, 3, HERE << "FwdState destructor done"); |
233 | } | |
62e76326 | 234 | |
38413773 | 235 | /** |
b6b6f466 | 236 | * This is the entry point for client-side to start forwarding |
237 | * a transaction. It is a static method that may or may not | |
238 | * allocate a FwdState. | |
239 | */ | |
be0c6690 | 240 | void |
be364179 | 241 | FwdState::fwdStart(const Comm::ConnectionPointer &clientConn, StoreEntry *entry, HttpRequest *request) |
b6b6f466 | 242 | { |
b50e327b | 243 | /** \note |
b6b6f466 | 244 | * client_addr == no_addr indicates this is an "internal" request |
245 | * from peer_digest.c, asn.c, netdb.c, etc and should always | |
246 | * be allowed. yuck, I know. | |
247 | */ | |
62e76326 | 248 | |
b50e327b | 249 | if ( Config.accessList.miss && !request->client_addr.IsNoAddr() && |
39a19cb7 | 250 | request->protocol != AnyP::PROTO_INTERNAL && request->protocol != AnyP::PROTO_CACHE_OBJECT) { |
b50e327b | 251 | /** |
b6b6f466 | 252 | * Check if this host is allowed to fetch MISSES from us (miss_access) |
253 | */ | |
c0941a6a | 254 | ACLFilledChecklist ch(Config.accessList.miss, request, NULL); |
b6b6f466 | 255 | ch.src_addr = request->client_addr; |
256 | ch.my_addr = request->my_addr; | |
2efeb0b7 | 257 | if (ch.fastCheck() == ACCESS_DENIED) { |
b6b6f466 | 258 | err_type page_id; |
9ce7856a | 259 | page_id = aclGetDenyInfoPage(&Config.denyInfoList, AclMatchedName, 1); |
b6b6f466 | 260 | |
261 | if (page_id == ERR_NONE) | |
262 | page_id = ERR_FORWARDING_DENIED; | |
263 | ||
913524f0 | 264 | ErrorState *anErr = new ErrorState(page_id, HTTP_FORBIDDEN, request); |
b6b6f466 | 265 | errorAppendEntry(entry, anErr); // frees anErr |
be0c6690 | 266 | return; |
b6b6f466 | 267 | } |
268 | } | |
269 | ||
cfd66529 | 270 | debugs(17, 3, HERE << "'" << entry->url() << "'"); |
f4ef658f | 271 | /* |
272 | * This seems like an odd place to bind mem_obj and request. | |
273 | * Might want to assert that request is NULL at this point | |
274 | */ | |
6dd9f4bd | 275 | entry->mem_obj->request = HTTPMSGLOCK(request); |
b6b6f466 | 276 | #if URL_CHECKSUM_DEBUG |
277 | ||
278 | entry->mem_obj->checkUrlChecksum(); | |
279 | #endif | |
280 | ||
281 | if (shutting_down) { | |
282 | /* more yuck */ | |
913524f0 | 283 | ErrorState *anErr = new ErrorState(ERR_SHUTTING_DOWN, HTTP_SERVICE_UNAVAILABLE, request); |
b6b6f466 | 284 | errorAppendEntry(entry, anErr); // frees anErr |
be0c6690 | 285 | return; |
6801f8a8 | 286 | } |
62e76326 | 287 | |
b6b6f466 | 288 | switch (request->protocol) { |
289 | ||
0c3d3f65 | 290 | case AnyP::PROTO_INTERNAL: |
e37bd29b | 291 | internalStart(clientConn, request, entry); |
be0c6690 | 292 | return; |
b6b6f466 | 293 | |
39a19cb7 | 294 | case AnyP::PROTO_CACHE_OBJECT: |
5c336a3b | 295 | CacheManager::GetInstance()->Start(clientConn, request, entry); |
be0c6690 | 296 | return; |
b6b6f466 | 297 | |
0c3d3f65 | 298 | case AnyP::PROTO_URN: |
b6b6f466 | 299 | urnStart(request, entry); |
be0c6690 | 300 | return; |
b6b6f466 | 301 | |
302 | default: | |
5c336a3b | 303 | FwdState::Pointer fwd = new FwdState(clientConn, entry, request); |
7a0fb323 | 304 | fwd->start(fwd); |
be0c6690 | 305 | return; |
b6b6f466 | 306 | } |
307 | ||
308 | /* NOTREACHED */ | |
41462d93 | 309 | } |
310 | ||
cfd66529 | 311 | void |
6b679a01 | 312 | FwdState::startConnectionOrFail() |
cfd66529 | 313 | { |
8652f8e7 | 314 | debugs(17, 3, HERE << entry->url()); |
cfd66529 | 315 | |
00ae51e4 | 316 | if (serverDestinations.size() > 0) { |
8652f8e7 AJ |
317 | // Ditch error page if it was created before. |
318 | // A new one will be created if there's another problem | |
913524f0 AJ |
319 | delete err; |
320 | err = NULL; | |
8652f8e7 AJ |
321 | |
322 | // Update the logging information about this new server connection. | |
323 | // Done here before anything else so the errors get logged for | |
324 | // this server link regardless of what happens when connecting to it. | |
325 | // IF sucessfuly connected this top destination will become the serverConnection(). | |
326 | request->hier.note(serverDestinations[0], request->GetHost()); | |
129fe2a1 | 327 | request->clearError(); |
8652f8e7 | 328 | |
cfd66529 AJ |
329 | connectStart(); |
330 | } else { | |
95b83010 CT |
331 | debugs(17, 3, HERE << "Connection failed: " << entry->url()); |
332 | if (!err) { | |
913524f0 | 333 | ErrorState *anErr = new ErrorState(ERR_CANNOT_FORWARD, HTTP_INTERNAL_SERVER_ERROR, request); |
95b83010 | 334 | fail(anErr); |
8652f8e7 | 335 | } // else use actual error from last connection attempt |
061bbdec | 336 | #if USE_SSL |
2c065fc8 | 337 | if (request->flags.sslPeek && request->clientConnectionManager.valid()) { |
061bbdec CT |
338 | errorAppendEntry(entry, err); // will free err |
339 | err = NULL; | |
340 | CallJobHere1(17, 4, request->clientConnectionManager, ConnStateData, | |
341 | ConnStateData::httpsPeeked, Comm::ConnectionPointer(NULL)); | |
342 | } | |
343 | #endif | |
cfd66529 AJ |
344 | self = NULL; // refcounted |
345 | } | |
346 | } | |
347 | ||
b6b6f466 | 348 | void |
349 | FwdState::fail(ErrorState * errorState) | |
350 | { | |
38413773 | 351 | debugs(17, 3, HERE << err_type_str[errorState->type] << " \"" << httpStatusString(errorState->httpStatus) << "\"\n\t" << entry->url() ); |
b6b6f466 | 352 | |
913524f0 | 353 | delete err; |
b6b6f466 | 354 | err = errorState; |
355 | ||
356 | if (!errorState->request) | |
6dd9f4bd | 357 | errorState->request = HTTPMSGLOCK(request); |
64b66b76 | 358 | |
85563fd9 AR |
359 | if (pconnRace == racePossible && err->type == ERR_ZERO_SIZE_OBJECT) { |
360 | debugs(17, 5, HERE << "pconn race happened"); | |
361 | pconnRace = raceHappened; | |
362 | } | |
b6b6f466 | 363 | } |
364 | ||
38413773 | 365 | /** |
b6b6f466 | 366 | * Frees fwdState without closing FD or generating an abort |
367 | */ | |
368 | void | |
00ae51e4 | 369 | FwdState::unregister(Comm::ConnectionPointer &conn) |
5229395c AJ |
370 | { |
371 | debugs(17, 3, HERE << entry->url() ); | |
372 | assert(serverConnection() == conn); | |
6b679a01 | 373 | assert(Comm::IsConnOpen(conn)); |
5229395c | 374 | comm_remove_close_handler(conn->fd, fwdServerClosedWrapper, this); |
00ae51e4 | 375 | serverConn = NULL; |
5229395c AJ |
376 | } |
377 | ||
378 | // Legacy method to be removed in favor of the above as soon as possible | |
379 | void | |
b6b6f466 | 380 | FwdState::unregister(int fd) |
381 | { | |
5229395c AJ |
382 | debugs(17, 3, HERE << entry->url() ); |
383 | assert(fd == serverConnection()->fd); | |
00ae51e4 | 384 | unregister(serverConn); |
b6b6f466 | 385 | } |
386 | ||
38413773 | 387 | /** |
b6b6f466 | 388 | * server-side modules call fwdComplete() when they are done |
389 | * downloading an object. Then, we either 1) re-forward the | |
390 | * request somewhere else if needed, or 2) call storeComplete() | |
391 | * to finish it off | |
392 | */ | |
393 | void | |
394 | FwdState::complete() | |
395 | { | |
cfd66529 | 396 | debugs(17, 3, HERE << entry->url() << "\n\tstatus " << entry->getReply()->sline.status ); |
b6b6f466 | 397 | #if URL_CHECKSUM_DEBUG |
398 | ||
399 | entry->mem_obj->checkUrlChecksum(); | |
400 | #endif | |
401 | ||
402 | logReplyStatus(n_tries, entry->getReply()->sline.status); | |
403 | ||
404 | if (reforward()) { | |
cfd66529 | 405 | debugs(17, 3, HERE << "re-forwarding " << entry->getReply()->sline.status << " " << entry->url()); |
b6b6f466 | 406 | |
6b679a01 | 407 | if (Comm::IsConnOpen(serverConn)) |
00ae51e4 | 408 | unregister(serverConn); |
b6b6f466 | 409 | |
cfd66529 AJ |
410 | entry->reset(); |
411 | ||
8652f8e7 AJ |
412 | // drop the last path off the selection list. try the next one. |
413 | serverDestinations.shift(); | |
414 | startConnectionOrFail(); | |
415 | ||
b6b6f466 | 416 | } else { |
6b679a01 AJ |
417 | if (Comm::IsConnOpen(serverConn)) |
418 | debugs(17, 3, HERE << "server FD " << serverConnection()->fd << " not re-forwarding status " << entry->getReply()->sline.status); | |
419 | else | |
420 | debugs(17, 3, HERE << "server (FD closed) not re-forwarding status " << entry->getReply()->sline.status); | |
9e5c22cf AJ |
421 | EBIT_CLR(entry->flags, ENTRY_FWD_HDR_WAIT); |
422 | entry->complete(); | |
fc68f6b1 | 423 | |
6b679a01 | 424 | if (!Comm::IsConnOpen(serverConn)) |
fc68f6b1 | 425 | completed(); |
426 | ||
7a0fb323 | 427 | self = NULL; // refcounted |
b6b6f466 | 428 | } |
429 | } | |
430 | ||
431 | ||
432 | /**** CALLBACK WRAPPERS ************************************************************/ | |
433 | ||
434 | static void | |
a37fdd8a | 435 | fwdPeerSelectionCompleteWrapper(Comm::ConnectionList * unused, ErrorState *err, void *data) |
b6b6f466 | 436 | { |
437 | FwdState *fwd = (FwdState *) data; | |
a37fdd8a AJ |
438 | if (err) |
439 | fwd->fail(err); | |
6b679a01 | 440 | fwd->startConnectionOrFail(); |
b6b6f466 | 441 | } |
442 | ||
443 | static void | |
575d05c4 | 444 | fwdServerClosedWrapper(const CommCloseCbParams ¶ms) |
b6b6f466 | 445 | { |
575d05c4 AJ |
446 | FwdState *fwd = (FwdState *)params.data; |
447 | fwd->serverClosed(params.fd); | |
b6b6f466 | 448 | } |
449 | ||
b6b6f466 | 450 | #if USE_SSL |
451 | static void | |
452 | fwdNegotiateSSLWrapper(int fd, void *data) | |
453 | { | |
454 | FwdState *fwd = (FwdState *) data; | |
455 | fwd->negotiateSSL(fd); | |
456 | } | |
457 | ||
458 | #endif | |
459 | ||
cfd66529 | 460 | void |
f01d4b80 | 461 | fwdConnectDoneWrapper(const Comm::ConnectionPointer &conn, comm_err_t status, int xerrno, void *data) |
b6b6f466 | 462 | { |
463 | FwdState *fwd = (FwdState *) data; | |
aed188fd | 464 | fwd->connectDone(conn, status, xerrno); |
b6b6f466 | 465 | } |
466 | ||
467 | /**** PRIVATE *****************************************************************/ | |
468 | ||
545782b8 | 469 | /* |
470 | * FwdState::checkRetry | |
26ac0430 | 471 | * |
545782b8 | 472 | * Return TRUE if the request SHOULD be retried. This method is |
473 | * called when the HTTP connection fails, or when the connection | |
474 | * is closed before server-side read the end of HTTP headers. | |
475 | */ | |
b6b6f466 | 476 | bool |
477 | FwdState::checkRetry() | |
68bd6892 | 478 | { |
d8fd0f18 | 479 | if (shutting_down) |
b6b6f466 | 480 | return false; |
62e76326 | 481 | |
9d2760b6 AR |
482 | if (!self) { // we have aborted before the server called us back |
483 | debugs(17, 5, HERE << "not retrying because of earlier abort"); | |
484 | // we will be destroyed when the server clears its Pointer to us | |
485 | return false; | |
486 | } | |
487 | ||
b6b6f466 | 488 | if (entry->store_status != STORE_PENDING) |
489 | return false; | |
62e76326 | 490 | |
b6b6f466 | 491 | if (!entry->isEmpty()) |
492 | return false; | |
62e76326 | 493 | |
b6b6f466 | 494 | if (n_tries > 10) |
495 | return false; | |
62e76326 | 496 | |
b6b6f466 | 497 | if (origin_tries > 2) |
498 | return false; | |
4ed0e075 | 499 | |
b6b6f466 | 500 | if (squid_curtime - start_t > Config.Timeout.forward) |
501 | return false; | |
62e76326 | 502 | |
b6b6f466 | 503 | if (flags.dont_retry) |
504 | return false; | |
62e76326 | 505 | |
0bbd5532 AJ |
506 | // NP: not yet actually connected anywhere. retry is safe. |
507 | if (!flags.connected_okay) | |
508 | return true; | |
509 | ||
5d4989a8 | 510 | if (!checkRetriable()) |
511 | return false; | |
512 | ||
58217e94 | 513 | if (request->bodyNibbled()) |
b6b6f466 | 514 | return false; |
62e76326 | 515 | |
b6b6f466 | 516 | return true; |
68bd6892 | 517 | } |
518 | ||
545782b8 | 519 | /* |
520 | * FwdState::checkRetriable | |
521 | * | |
522 | * Return TRUE if this is the kind of request that can be retried | |
523 | * after a failure. If the request is not retriable then we don't | |
524 | * want to risk sending it on a persistent connection. Instead we'll | |
525 | * force it to go on a new HTTP connection. | |
526 | */ | |
b6b6f466 | 527 | bool |
528 | FwdState::checkRetriable() | |
cb928909 | 529 | { |
cb928909 | 530 | /* RFC2616 9.1 Safe and Idempotent Methods */ |
914b89a2 | 531 | switch (request->method.id()) { |
cb928909 | 532 | /* 9.1.1 Safe Methods */ |
533 | ||
534 | case METHOD_GET: | |
535 | ||
536 | case METHOD_HEAD: | |
914b89a2 | 537 | /* 9.1.2 Idempotent Methods */ |
cb928909 | 538 | |
539 | case METHOD_PUT: | |
540 | ||
541 | case METHOD_DELETE: | |
542 | ||
543 | case METHOD_OPTIONS: | |
544 | ||
545 | case METHOD_TRACE: | |
546 | break; | |
547 | ||
548 | default: | |
b6b6f466 | 549 | return false; |
cb928909 | 550 | } |
551 | ||
b6b6f466 | 552 | return true; |
cb928909 | 553 | } |
554 | ||
b6b6f466 | 555 | void |
556 | FwdState::serverClosed(int fd) | |
910169e5 | 557 | { |
cfd66529 | 558 | debugs(17, 2, HERE << "FD " << fd << " " << entry->url()); |
3e8c047e | 559 | retryOrBail(); |
560 | } | |
561 | ||
562 | void | |
26ac0430 AJ |
563 | FwdState::retryOrBail() |
564 | { | |
b6b6f466 | 565 | if (checkRetry()) { |
cfd66529 | 566 | debugs(17, 3, HERE << "re-forwarding (" << n_tries << " tries, " << (squid_curtime - start_t) << " secs)"); |
85563fd9 AR |
567 | // we should retry the same destination if it failed due to pconn race |
568 | if (pconnRace == raceHappened) | |
569 | debugs(17, 4, HERE << "retrying the same destination"); | |
570 | else | |
571 | serverDestinations.shift(); // last one failed. try another. | |
8652f8e7 AJ |
572 | startConnectionOrFail(); |
573 | return; | |
d8fd0f18 | 574 | } |
62e76326 | 575 | |
9d2760b6 AR |
576 | // TODO: should we call completed() here and move doneWithRetries there? |
577 | doneWithRetries(); | |
578 | ||
579 | if (self != NULL && !err && shutting_down) { | |
913524f0 | 580 | ErrorState *anErr = new ErrorState(ERR_SHUTTING_DOWN, HTTP_SERVICE_UNAVAILABLE, request); |
f01d4b80 | 581 | errorAppendEntry(entry, anErr); |
f563eea9 | 582 | } |
62e76326 | 583 | |
b6b6f466 | 584 | self = NULL; // refcounted |
910169e5 | 585 | } |
586 | ||
9d2760b6 AR |
587 | // If the Server quits before nibbling at the request body, the body sender |
588 | // will not know (so that we can retry). Call this if we will not retry. We | |
589 | // will notify the sender so that it does not get stuck waiting for space. | |
590 | void | |
591 | FwdState::doneWithRetries() | |
592 | { | |
593 | if (request && request->body_pipe != NULL) | |
594 | request->body_pipe->expectNoConsumption(); | |
595 | } | |
596 | ||
3e8c047e | 597 | // called by the server that failed after calling unregister() |
598 | void | |
599 | FwdState::handleUnregisteredServerEnd() | |
600 | { | |
cfd66529 | 601 | debugs(17, 2, HERE << "self=" << self << " err=" << err << ' ' << entry->url()); |
6b679a01 | 602 | assert(!Comm::IsConnOpen(serverConn)); |
3e8c047e | 603 | retryOrBail(); |
604 | } | |
605 | ||
a7ad6e4e | 606 | #if USE_SSL |
b6b6f466 | 607 | void |
608 | FwdState::negotiateSSL(int fd) | |
a7ad6e4e | 609 | { |
8e9bae99 | 610 | unsigned long ssl_lib_error = SSL_ERROR_NONE; |
a7ad6e4e | 611 | SSL *ssl = fd_table[fd].ssl; |
612 | int ret; | |
62e76326 | 613 | |
a7ad6e4e | 614 | if ((ret = SSL_connect(ssl)) <= 0) { |
62e76326 | 615 | int ssl_error = SSL_get_error(ssl, ret); |
8e9bae99 CT |
616 | #ifdef EPROTO |
617 | int sysErrNo = EPROTO; | |
618 | #else | |
619 | int sysErrNo = EACCES; | |
620 | #endif | |
62e76326 | 621 | |
622 | switch (ssl_error) { | |
623 | ||
624 | case SSL_ERROR_WANT_READ: | |
d841c88d | 625 | Comm::SetSelect(fd, COMM_SELECT_READ, fwdNegotiateSSLWrapper, this, 0); |
62e76326 | 626 | return; |
627 | ||
628 | case SSL_ERROR_WANT_WRITE: | |
d841c88d | 629 | Comm::SetSelect(fd, COMM_SELECT_WRITE, fwdNegotiateSSLWrapper, this, 0); |
62e76326 | 630 | return; |
631 | ||
8e9bae99 CT |
632 | case SSL_ERROR_SSL: |
633 | case SSL_ERROR_SYSCALL: | |
634 | ssl_lib_error = ERR_get_error(); | |
26ac0430 | 635 | debugs(81, 1, "fwdNegotiateSSL: Error negotiating SSL connection on FD " << fd << |
8e9bae99 | 636 | ": " << ERR_error_string(ssl_lib_error, NULL) << " (" << ssl_error << |
26ac0430 | 637 | "/" << ret << "/" << errno << ")"); |
62e76326 | 638 | |
8e9bae99 CT |
639 | // store/report errno when ssl_error is SSL_ERROR_SYSCALL, ssl_lib_error is 0, and ret is -1 |
640 | if (ssl_error == SSL_ERROR_SYSCALL && ret == -1 && ssl_lib_error == 0) | |
641 | sysErrNo = errno; | |
62e76326 | 642 | |
8e9bae99 CT |
643 | // falling through to complete error handling |
644 | ||
645 | default: | |
e7a7152c CT |
646 | // TODO: move into a method before merge |
647 | Ssl::ErrorDetail *errDetails; | |
4d16918e | 648 | Ssl::ErrorDetail *errFromFailure = (Ssl::ErrorDetail *)SSL_get_ex_data(ssl, ssl_ex_index_ssl_error_detail); |
e34763f4 | 649 | if (errFromFailure != NULL) { |
4d16918e CT |
650 | // The errFromFailure is attached to the ssl object |
651 | // and will be released when ssl object destroyed. | |
7a957a93 | 652 | // Copy errFromFailure to a new Ssl::ErrorDetail object. |
e7a7152c | 653 | errDetails = new Ssl::ErrorDetail(*errFromFailure); |
ef5fbcff | 654 | } else { |
7a957a93 | 655 | // server_cert can be NULL here |
061bbdec | 656 | X509 *server_cert = SSL_get_peer_certificate(ssl); |
de878a55 | 657 | errDetails = new Ssl::ErrorDetail(SQUID_ERR_SSL_HANDSHAKE, server_cert, NULL); |
061bbdec | 658 | X509_free(server_cert); |
8e9bae99 CT |
659 | } |
660 | ||
661 | if (ssl_lib_error != SSL_ERROR_NONE) | |
e7a7152c | 662 | errDetails->setLibError(ssl_lib_error); |
4d16918e | 663 | |
061bbdec | 664 | if (request->clientConnectionManager.valid()) { |
7a957a93 | 665 | // remember the server certificate from the ErrorDetail object |
fd4624d7 CT |
666 | if (Ssl::ServerBump *serverBump = request->clientConnectionManager->serverBump()) { |
667 | serverBump->serverCert.resetAndLock(errDetails->peerCert()); | |
fb2178bb | 668 | |
7a957a93 AR |
669 | // remember validation errors, if any |
670 | if (Ssl::Errors *errs = static_cast<Ssl::Errors*>(SSL_get_ex_data(ssl, ssl_ex_index_ssl_errors))) | |
671 | serverBump->sslErrors = cbdataReference(errs); | |
672 | } | |
061bbdec CT |
673 | } |
674 | ||
7a957a93 AR |
675 | // For intercepted connections, set the host name to the server |
676 | // certificate CN. Otherwise, we just hope that CONNECT is using | |
677 | // a user-entered address (a host name or a user-entered IP). | |
35cd4281 CT |
678 | const bool isConnectRequest = !request->clientConnectionManager->port->spoof_client_ip && |
679 | !request->clientConnectionManager->port->intercepted; | |
35cd4281 | 680 | if (request->flags.sslPeek && !isConnectRequest) { |
002db1fa | 681 | if (X509 *srvX509 = errDetails->peerCert()) { |
2c065fc8 AR |
682 | if (const char *name = Ssl::CommonHostName(srvX509)) { |
683 | request->SetHost(name); | |
684 | debugs(83, 3, HERE << "reset request host: " << name); | |
685 | } | |
686 | } | |
e7a7152c | 687 | } |
7a957a93 | 688 | |
2c065fc8 | 689 | ErrorState *const anErr = makeConnectingError(ERR_SECURE_CONNECT_FAIL); |
e7a7152c CT |
690 | anErr->xerrno = sysErrNo; |
691 | anErr->detail = errDetails; | |
b6b6f466 | 692 | fail(anErr); |
62e76326 | 693 | |
5229395c AJ |
694 | if (serverConnection()->getPeer()) { |
695 | peerConnectFailed(serverConnection()->getPeer()); | |
62e76326 | 696 | } |
697 | ||
00ae51e4 | 698 | serverConn->close(); |
62e76326 | 699 | return; |
700 | } | |
a7ad6e4e | 701 | } |
061bbdec | 702 | |
fb2178bb | 703 | if (request->clientConnectionManager.valid()) { |
7a957a93 | 704 | // remember the server certificate from the ErrorDetail object |
fd4624d7 CT |
705 | if (Ssl::ServerBump *serverBump = request->clientConnectionManager->serverBump()) { |
706 | serverBump->serverCert.reset(SSL_get_peer_certificate(ssl)); | |
707 | ||
7a957a93 AR |
708 | // remember validation errors, if any |
709 | if (Ssl::Errors *errs = static_cast<Ssl::Errors *>(SSL_get_ex_data(ssl, ssl_ex_index_ssl_errors))) | |
710 | serverBump->sslErrors = cbdataReference(errs); | |
fd4624d7 | 711 | } |
fb2178bb | 712 | } |
62e76326 | 713 | |
5229395c AJ |
714 | if (serverConnection()->getPeer() && !SSL_session_reused(ssl)) { |
715 | if (serverConnection()->getPeer()->sslSession) | |
716 | SSL_SESSION_free(serverConnection()->getPeer()->sslSession); | |
f38c5e43 | 717 | |
5229395c | 718 | serverConnection()->getPeer()->sslSession = SSL_get1_session(ssl); |
f38c5e43 | 719 | } |
720 | ||
b6b6f466 | 721 | dispatch(); |
a7ad6e4e | 722 | } |
723 | ||
b6b6f466 | 724 | void |
725 | FwdState::initiateSSL() | |
a7ad6e4e | 726 | { |
a7ad6e4e | 727 | SSL *ssl; |
728 | SSL_CTX *sslContext = NULL; | |
5229395c AJ |
729 | const peer *peer = serverConnection()->getPeer(); |
730 | int fd = serverConnection()->fd; | |
62e76326 | 731 | |
a7ad6e4e | 732 | if (peer) { |
62e76326 | 733 | assert(peer->use_ssl); |
734 | sslContext = peer->sslContext; | |
a7ad6e4e | 735 | } else { |
62e76326 | 736 | sslContext = Config.ssl_client.sslContext; |
a7ad6e4e | 737 | } |
62e76326 | 738 | |
a7ad6e4e | 739 | assert(sslContext); |
62e76326 | 740 | |
a7ad6e4e | 741 | if ((ssl = SSL_new(sslContext)) == NULL) { |
bf8fe701 | 742 | debugs(83, 1, "fwdInitiateSSL: Error allocating handle: " << ERR_error_string(ERR_get_error(), NULL) ); |
913524f0 | 743 | ErrorState *anErr = new ErrorState(ERR_SOCKET_FAILURE, HTTP_INTERNAL_SERVER_ERROR, request); |
129fe2a1 | 744 | // TODO: create Ssl::ErrorDetail with OpenSSL-supplied error code |
b6b6f466 | 745 | fail(anErr); |
746 | self = NULL; // refcounted | |
62e76326 | 747 | return; |
a7ad6e4e | 748 | } |
62e76326 | 749 | |
a7ad6e4e | 750 | SSL_set_fd(ssl, fd); |
62e76326 | 751 | |
a7ad6e4e | 752 | if (peer) { |
62e76326 | 753 | if (peer->ssldomain) |
754 | SSL_set_ex_data(ssl, ssl_ex_index_server, peer->ssldomain); | |
755 | ||
a7ad6e4e | 756 | #if NOT_YET |
62e76326 | 757 | |
758 | else if (peer->name) | |
759 | SSL_set_ex_data(ssl, ssl_ex_index_server, peer->name); | |
760 | ||
a7ad6e4e | 761 | #endif |
62e76326 | 762 | |
763 | else | |
764 | SSL_set_ex_data(ssl, ssl_ex_index_server, peer->host); | |
f38c5e43 | 765 | |
766 | if (peer->sslSession) | |
767 | SSL_set_session(ssl, peer->sslSession); | |
768 | ||
a7ad6e4e | 769 | } else { |
53650ffa CT |
770 | // While we are peeking at the certificate, we may not know the server |
771 | // name that the client will request (after interception or CONNECT) | |
35cd4281 | 772 | // unless it was the CONNECT request with a user-typed address. |
53650ffa CT |
773 | const char *hostname = request->GetHost(); |
774 | const bool hostnameIsIp = request->GetHostIsNumeric(); | |
35cd4281 CT |
775 | const bool isConnectRequest = !request->clientConnectionManager->port->spoof_client_ip && |
776 | !request->clientConnectionManager->port->intercepted; | |
777 | if (!request->flags.sslPeek || isConnectRequest) | |
2c065fc8 AR |
778 | SSL_set_ex_data(ssl, ssl_ex_index_server, (void*)hostname); |
779 | ||
53650ffa | 780 | // Use SNI TLS extension only when we connect directly |
7a957a93 | 781 | // to the origin server and we know the server host name. |
53650ffa CT |
782 | if (!hostnameIsIp) |
783 | Ssl::setClientSNI(ssl, hostname); | |
a7ad6e4e | 784 | } |
62e76326 | 785 | |
4d5a6db8 | 786 | // Create the ACL check list now, while we have access to more info. |
787 | // The list is used in ssl_verify_cb() and is freed in ssl_free(). | |
788 | if (acl_access *acl = Config.ssl_client.cert_error) { | |
c0941a6a | 789 | ACLFilledChecklist *check = new ACLFilledChecklist(acl, request, dash_str); |
4d5a6db8 | 790 | check->fd(fd); |
791 | SSL_set_ex_data(ssl, ssl_ex_index_cert_error_check, check); | |
792 | } | |
793 | ||
e7bcc25f CT |
794 | // store peeked cert to check SQUID_X509_V_ERR_CERT_CHANGE |
795 | X509 *peeked_cert; | |
fd4624d7 CT |
796 | if (request->clientConnectionManager.valid() && |
797 | request->clientConnectionManager->serverBump() && | |
798 | (peeked_cert = request->clientConnectionManager->serverBump()->serverCert.get())) { | |
e7bcc25f CT |
799 | CRYPTO_add(&(peeked_cert->references),1,CRYPTO_LOCK_X509); |
800 | SSL_set_ex_data(ssl, ssl_ex_index_ssl_peeked_cert, peeked_cert); | |
801 | } | |
802 | ||
a7ad6e4e | 803 | fd_table[fd].ssl = ssl; |
804 | fd_table[fd].read_method = &ssl_read_method; | |
805 | fd_table[fd].write_method = &ssl_write_method; | |
b6b6f466 | 806 | negotiateSSL(fd); |
a7ad6e4e | 807 | } |
62e76326 | 808 | |
a7ad6e4e | 809 | #endif |
810 | ||
b6b6f466 | 811 | void |
f01d4b80 | 812 | FwdState::connectDone(const Comm::ConnectionPointer &conn, comm_err_t status, int xerrno) |
41462d93 | 813 | { |
2f538b78 | 814 | if (status != COMM_OK) { |
9c8a6c3b | 815 | ErrorState *const anErr = makeConnectingError(ERR_CONNECT_FAIL); |
b6b6f466 | 816 | anErr->xerrno = xerrno; |
b6b6f466 | 817 | fail(anErr); |
62e76326 | 818 | |
2f538b78 | 819 | /* it might have been a timeout with a partially open link */ |
00ae51e4 AJ |
820 | if (conn != NULL) { |
821 | if (conn->getPeer()) | |
822 | peerConnectFailed(conn->getPeer()); | |
62e76326 | 823 | |
80463bb4 | 824 | conn->close(); |
2f538b78 | 825 | } |
aed188fd | 826 | retryOrBail(); |
2f538b78 AJ |
827 | return; |
828 | } | |
62e76326 | 829 | |
00ae51e4 AJ |
830 | serverConn = conn; |
831 | ||
f01d4b80 | 832 | debugs(17, 3, HERE << serverConnection() << ": '" << entry->url() << "'" ); |
62e76326 | 833 | |
5229395c | 834 | comm_add_close_handler(serverConnection()->fd, fwdServerClosedWrapper, this); |
2f538b78 | 835 | |
5229395c AJ |
836 | if (serverConnection()->getPeer()) |
837 | peerConnectSucceded(serverConnection()->getPeer()); | |
2f538b78 | 838 | |
85563fd9 AR |
839 | if (request->flags.canRePin && request->clientConnectionManager.valid()) { |
840 | debugs(17, 3, HERE << "repinning " << serverConn); | |
841 | request->clientConnectionManager->pinConnection(serverConn, | |
842 | request, serverConn->getPeer(), request->flags.auth); | |
a44e5bbf | 843 | request->flags.pinned = 1; |
85563fd9 AR |
844 | } |
845 | ||
2f538b78 | 846 | #if USE_SSL |
ea33d92b | 847 | if (!request->flags.pinned) { |
39322eba | 848 | if ((serverConnection()->getPeer() && serverConnection()->getPeer()->use_ssl) || |
37276dbb AR |
849 | (!serverConnection()->getPeer() && request->protocol == AnyP::PROTO_HTTPS) || |
850 | request->flags.sslPeek) { | |
39322eba J |
851 | initiateSSL(); |
852 | return; | |
853 | } | |
41462d93 | 854 | } |
2f538b78 AJ |
855 | #endif |
856 | ||
0bbd5532 | 857 | flags.connected_okay = true; |
2f538b78 | 858 | dispatch(); |
41462d93 | 859 | } |
860 | ||
b6b6f466 | 861 | void |
862 | FwdState::connectTimeout(int fd) | |
41462d93 | 863 | { |
bf8fe701 | 864 | debugs(17, 2, "fwdConnectTimeout: FD " << fd << ": '" << entry->url() << "'" ); |
6b679a01 AJ |
865 | assert(serverDestinations[0] != NULL); |
866 | assert(fd == serverDestinations[0]->fd); | |
62e76326 | 867 | |
528b2c61 | 868 | if (entry->isEmpty()) { |
913524f0 | 869 | ErrorState *anErr = new ErrorState(ERR_CONNECT_FAIL, HTTP_GATEWAY_TIMEOUT, request); |
b6b6f466 | 870 | anErr->xerrno = ETIMEDOUT; |
871 | fail(anErr); | |
62e76326 | 872 | |
cfd66529 | 873 | /* This marks the peer DOWN ... */ |
6b679a01 AJ |
874 | if (serverDestinations[0]->getPeer()) |
875 | peerConnectFailed(serverDestinations[0]->getPeer()); | |
41462d93 | 876 | } |
62e76326 | 877 | |
6b679a01 AJ |
878 | if (Comm::IsConnOpen(serverDestinations[0])) { |
879 | serverDestinations[0]->close(); | |
746beefe | 880 | } |
41462d93 | 881 | } |
882 | ||
cfd66529 | 883 | /** |
ae18571d AJ |
884 | * Called after Forwarding path selection (via peer select) has taken place. |
885 | * And whenever forwarding needs to attempt a new connection (routing failover) | |
886 | * We have a vector of possible localIP->remoteIP paths now ready to start being connected. | |
cfd66529 | 887 | */ |
b6b6f466 | 888 | void |
889 | FwdState::connectStart() | |
41462d93 | 890 | { |
6b679a01 AJ |
891 | assert(serverDestinations.size() > 0); |
892 | ||
cfd66529 | 893 | debugs(17, 3, "fwdConnectStart: " << entry->url()); |
62e76326 | 894 | |
3ff65596 AR |
895 | if (n_tries == 0) // first attempt |
896 | request->hier.first_conn_start = current_time; | |
897 | ||
cfd66529 AJ |
898 | /* connection timeout */ |
899 | int ctimeout; | |
6b679a01 AJ |
900 | if (serverDestinations[0]->getPeer()) { |
901 | ctimeout = serverDestinations[0]->getPeer()->connect_timeout > 0 ? | |
902 | serverDestinations[0]->getPeer()->connect_timeout : Config.Timeout.peer_connect; | |
db1cd23c | 903 | } else { |
62e76326 | 904 | ctimeout = Config.Timeout.connect; |
db1cd23c | 905 | } |
62e76326 | 906 | |
cfd66529 AJ |
907 | /* calculate total forwarding timeout ??? */ |
908 | int ftimeout = Config.Timeout.forward - (squid_curtime - start_t); | |
777831e0 | 909 | if (ftimeout < 0) |
910 | ftimeout = 5; | |
911 | ||
912 | if (ftimeout < ctimeout) | |
913 | ctimeout = ftimeout; | |
914 | ||
1b76e6c1 | 915 | if (serverDestinations[0]->getPeer() && request->flags.sslBumped == true) { |
b68415a1 | 916 | debugs(50, 4, "fwdConnectStart: Ssl bumped connections through parrent proxy are not allowed"); |
913524f0 | 917 | ErrorState *anErr = new ErrorState(ERR_CANNOT_FORWARD, HTTP_SERVICE_UNAVAILABLE, request); |
b68415a1 CT |
918 | fail(anErr); |
919 | self = NULL; // refcounted | |
920 | return; | |
985bfe6b | 921 | } |
d67acb4e | 922 | |
2efeb0b7 AJ |
923 | request->flags.pinned = 0; // XXX: what if the ConnStateData set this to flag existing credentials? |
924 | // XXX: answer: the peer selection *should* catch it and give us only the pinned peer. so we reverse the =0 step below. | |
925 | // XXX: also, logs will now lie if pinning is broken and leads to an error message. | |
6b679a01 | 926 | if (serverDestinations[0]->peerType == PINNED) { |
26ac0430 | 927 | ConnStateData *pinned_connection = request->pinnedConnection(); |
85563fd9 AR |
928 | // pinned_connection may become nil after a pconn race |
929 | if (pinned_connection) | |
930 | serverConn = pinned_connection->validatePinnedConnection(request, serverDestinations[0]->getPeer()); | |
931 | else | |
932 | serverConn = NULL; | |
e3a4aecc | 933 | if (Comm::IsConnOpen(serverConn)) { |
d67acb4e | 934 | #if 0 |
e3a4aecc AJ |
935 | if (!serverConn->getPeer()) |
936 | serverConn->peerType = HIER_DIRECT; | |
d67acb4e | 937 | #endif |
d67acb4e AJ |
938 | n_tries++; |
939 | request->flags.pinned = 1; | |
940 | if (pinned_connection->pinnedAuth()) | |
941 | request->flags.auth = 1; | |
23211a9f | 942 | comm_add_close_handler(serverConn->fd, fwdServerClosedWrapper, this); |
85563fd9 AR |
943 | // the server may close the pinned connection before this request |
944 | pconnRace = racePossible; | |
6b679a01 | 945 | dispatch(); |
d67acb4e AJ |
946 | return; |
947 | } | |
85563fd9 AR |
948 | /* Failure. Fall back on next path unless we can re-pin */ |
949 | debugs(17,2,HERE << "Pinned connection failed: " << pinned_connection); | |
950 | if (pconnRace != raceHappened || !request->flags.canRePin) { | |
951 | serverDestinations.shift(); | |
952 | pconnRace = raceImpossible; | |
953 | startConnectionOrFail(); | |
954 | return; | |
955 | } | |
956 | debugs(17,3, HERE << "There was a pconn race. Will try to repin."); | |
957 | // and fall through to regular handling | |
26ac0430 | 958 | } |
d67acb4e | 959 | |
642a305c | 960 | // Use pconn to avoid opening a new connection. |
cfd66529 | 961 | const char *host; |
6b679a01 AJ |
962 | if (serverDestinations[0]->getPeer()) { |
963 | host = serverDestinations[0]->getPeer()->host; | |
af6a12ee | 964 | } else { |
06093389 | 965 | host = request->GetHost(); |
06093389 | 966 | } |
85563fd9 AR |
967 | |
968 | Comm::ConnectionPointer temp; | |
969 | // Avoid pconns after races so that the same client does not suffer twice. | |
970 | // This does not increase the total number of connections because we just | |
971 | // closed the connection that failed the race. And re-pinning assumes this. | |
972 | if (pconnRace != raceHappened) | |
973 | temp = fwdPconnPool->pop(serverDestinations[0], host, checkRetriable()); | |
bbf706ff | 974 | |
85563fd9 AR |
975 | const bool openedPconn = Comm::IsConnOpen(temp); |
976 | pconnRace = openedPconn ? racePossible : raceImpossible; | |
cfd66529 | 977 | |
6b679a01 | 978 | // if we found an open persistent connection to use. use it. |
85563fd9 | 979 | if (openedPconn) { |
80463bb4 | 980 | serverConn = temp; |
642a305c | 981 | debugs(17, 3, HERE << "reusing pconn " << serverConnection()); |
c8ceec27 | 982 | n_tries++; |
4ed0e075 | 983 | |
5229395c | 984 | if (!serverConnection()->getPeer()) |
c8ceec27 | 985 | origin_tries++; |
74780d33 | 986 | |
5229395c | 987 | comm_add_close_handler(serverConnection()->fd, fwdServerClosedWrapper, this); |
b5523edc AJ |
988 | |
989 | /* Update server side TOS and Netfilter mark on the connection. */ | |
990 | if (Ip::Qos::TheConfig.isAclTosActive()) { | |
991 | temp->tos = GetTosToServer(request); | |
992 | Ip::Qos::setSockTos(temp, temp->tos); | |
993 | } | |
994 | #if SO_MARK | |
995 | if (Ip::Qos::TheConfig.isAclNfmarkActive()) { | |
996 | temp->nfmark = GetNfmarkToServer(request); | |
997 | Ip::Qos::setSockNfmark(temp, temp->nfmark); | |
998 | } | |
999 | #endif | |
1000 | ||
c8ceec27 | 1001 | dispatch(); |
c8ceec27 | 1002 | return; |
41462d93 | 1003 | } |
62e76326 | 1004 | |
85563fd9 AR |
1005 | // We will try to open a new connection, possibly to the same destination. |
1006 | // We reset serverDestinations[0] in case we are using it again because | |
1007 | // ConnOpener modifies its destination argument. | |
1008 | serverDestinations[0]->local.SetPort(0); | |
1009 | serverConn = NULL; | |
1010 | ||
bc87dc25 | 1011 | #if URL_CHECKSUM_DEBUG |
b6b6f466 | 1012 | entry->mem_obj->checkUrlChecksum(); |
bc87dc25 | 1013 | #endif |
62e76326 | 1014 | |
b5523edc AJ |
1015 | /* Get the server side TOS and Netfilter mark to be set on the connection. */ |
1016 | if (Ip::Qos::TheConfig.isAclTosActive()) { | |
1017 | serverDestinations[0]->tos = GetTosToServer(request); | |
1018 | } | |
11e8cfe3 | 1019 | #if SO_MARK && USE_LIBCAP |
a750e510 | 1020 | serverDestinations[0]->nfmark = GetNfmarkToServer(request); |
25b481e6 | 1021 | debugs(17, 3, "fwdConnectStart: got outgoing addr " << serverDestinations[0]->local << ", tos " << int(serverDestinations[0]->tos) |
a750e510 | 1022 | << ", netfilter mark " << serverDestinations[0]->nfmark); |
425de4c8 | 1023 | #else |
a750e510 | 1024 | serverDestinations[0]->nfmark = 0; |
25b481e6 | 1025 | debugs(17, 3, "fwdConnectStart: got outgoing addr " << serverDestinations[0]->local << ", tos " << int(serverDestinations[0]->tos)); |
b5523edc AJ |
1026 | #endif |
1027 | ||
e3a4aecc AJ |
1028 | calls.connector = commCbCall(17,3, "fwdConnectDoneWrapper", CommConnectCbPtrFun(fwdConnectDoneWrapper, this)); |
1029 | Comm::ConnOpener *cs = new Comm::ConnOpener(serverDestinations[0], calls.connector, ctimeout); | |
aed188fd | 1030 | cs->setHost(host); |
855150a4 | 1031 | AsyncJob::Start(cs); |
41462d93 | 1032 | } |
1033 | ||
b6b6f466 | 1034 | void |
1035 | FwdState::dispatch() | |
41462d93 | 1036 | { |
5c336a3b | 1037 | debugs(17, 3, HERE << clientConn << ": Fetching '" << RequestMethodStr(request->method) << " " << entry->url() << "'"); |
e0ebe27c | 1038 | /* |
1039 | * Assert that server_fd is set. This is to guarantee that fwdState | |
1040 | * is attached to something and will be deallocated when server_fd | |
1041 | * is closed. | |
1042 | */ | |
6b679a01 | 1043 | assert(Comm::IsConnOpen(serverConn)); |
62e76326 | 1044 | |
5229395c | 1045 | fd_note(serverConnection()->fd, entry->url()); |
62e76326 | 1046 | |
5229395c | 1047 | fd_table[serverConnection()->fd].noteUse(fwdPconnPool); |
62e76326 | 1048 | |
a7ad6e4e | 1049 | /*assert(!EBIT_TEST(entry->flags, ENTRY_DISPATCHED)); */ |
1050 | assert(entry->ping_status != PING_WAITING); | |
62e76326 | 1051 | |
a7ad6e4e | 1052 | assert(entry->lock_count); |
62e76326 | 1053 | |
a7ad6e4e | 1054 | EBIT_SET(entry->flags, ENTRY_DISPATCHED); |
62e76326 | 1055 | |
cc192b50 | 1056 | netdbPingSite(request->GetHost()); |
62e76326 | 1057 | |
425de4c8 | 1058 | /* Retrieves remote server TOS or MARK value, and stores it as part of the |
7172612f | 1059 | * original client request FD object. It is later used to forward |
425de4c8 | 1060 | * remote server's TOS/MARK in the response to the client in case of a MISS. |
7172612f | 1061 | */ |
425de4c8 | 1062 | if (Ip::Qos::TheConfig.isHitNfmarkActive()) { |
b5523edc AJ |
1063 | if (Comm::IsConnOpen(clientConn) && Comm::IsConnOpen(serverConnection())) { |
1064 | fde * clientFde = &fd_table[clientConn->fd]; // XXX: move the fd_table access into Ip::Qos | |
425de4c8 | 1065 | /* Get the netfilter mark for the connection */ |
b5523edc | 1066 | Ip::Qos::getNfmarkFromServer(serverConnection(), clientFde); |
425de4c8 AJ |
1067 | } |
1068 | } | |
1069 | ||
1070 | #if _SQUID_LINUX_ | |
1071 | /* Bug 2537: The TOS forward part of QOS only applies to patched Linux kernels. */ | |
1072 | if (Ip::Qos::TheConfig.isHitTosActive()) { | |
b5523edc AJ |
1073 | if (Comm::IsConnOpen(clientConn)) { |
1074 | fde * clientFde = &fd_table[clientConn->fd]; // XXX: move the fd_table access into Ip::Qos | |
425de4c8 | 1075 | /* Get the TOS value for the packet */ |
b5523edc | 1076 | Ip::Qos::getTosFromServer(serverConnection(), clientFde); |
7172612f | 1077 | } |
26ac0430 | 1078 | } |
7172612f AJ |
1079 | #endif |
1080 | ||
d7ce0bcd | 1081 | #if USE_SSL |
2c065fc8 | 1082 | if (request->flags.sslPeek) { |
d7ce0bcd | 1083 | CallJobHere1(17, 4, request->clientConnectionManager, ConnStateData, |
061bbdec | 1084 | ConnStateData::httpsPeeked, serverConnection()); |
d7ce0bcd AR |
1085 | unregister(serverConn); // async call owns it now |
1086 | complete(); // destroys us | |
1087 | return; | |
061bbdec | 1088 | } |
d7ce0bcd AR |
1089 | #endif |
1090 | ||
5229395c AJ |
1091 | if (serverConnection()->getPeer() != NULL) { |
1092 | serverConnection()->getPeer()->stats.fetches++; | |
1093 | request->peer_login = serverConnection()->getPeer()->login; | |
1094 | request->peer_domain = serverConnection()->getPeer()->domain; | |
b6b6f466 | 1095 | httpStart(this); |
41462d93 | 1096 | } else { |
2c065fc8 | 1097 | assert(!request->flags.sslPeek); |
b6b6f466 | 1098 | request->peer_login = NULL; |
1099 | request->peer_domain = NULL; | |
62e76326 | 1100 | |
1101 | switch (request->protocol) { | |
a7ad6e4e | 1102 | #if USE_SSL |
62e76326 | 1103 | |
0c3d3f65 | 1104 | case AnyP::PROTO_HTTPS: |
b6b6f466 | 1105 | httpStart(this); |
62e76326 | 1106 | break; |
a7ad6e4e | 1107 | #endif |
62e76326 | 1108 | |
0c3d3f65 | 1109 | case AnyP::PROTO_HTTP: |
b6b6f466 | 1110 | httpStart(this); |
62e76326 | 1111 | break; |
1112 | ||
0c3d3f65 | 1113 | case AnyP::PROTO_GOPHER: |
b6b6f466 | 1114 | gopherStart(this); |
62e76326 | 1115 | break; |
1116 | ||
0c3d3f65 | 1117 | case AnyP::PROTO_FTP: |
b6b6f466 | 1118 | ftpStart(this); |
62e76326 | 1119 | break; |
1120 | ||
39a19cb7 | 1121 | case AnyP::PROTO_CACHE_OBJECT: |
62e76326 | 1122 | |
0c3d3f65 | 1123 | case AnyP::PROTO_INTERNAL: |
62e76326 | 1124 | |
0c3d3f65 | 1125 | case AnyP::PROTO_URN: |
62e76326 | 1126 | fatal_dump("Should never get here"); |
1127 | break; | |
1128 | ||
0c3d3f65 | 1129 | case AnyP::PROTO_WHOIS: |
b6b6f466 | 1130 | whoisStart(this); |
62e76326 | 1131 | break; |
1132 | ||
0c3d3f65 | 1133 | case AnyP::PROTO_WAIS: /* Not implemented */ |
fc68f6b1 | 1134 | |
62e76326 | 1135 | default: |
7be06178 | 1136 | debugs(17, DBG_IMPORTANT, "WARNING: Cannot retrieve '" << entry->url() << "'."); |
913524f0 | 1137 | ErrorState *anErr = new ErrorState(ERR_UNSUP_REQ, HTTP_BAD_REQUEST, request); |
b6b6f466 | 1138 | fail(anErr); |
7be06178 | 1139 | // Set the dont_retry flag because this is not a transient (network) error. |
b6b6f466 | 1140 | flags.dont_retry = 1; |
6b679a01 | 1141 | if (Comm::IsConnOpen(serverConn)) { |
00ae51e4 | 1142 | serverConn->close(); |
746beefe | 1143 | } |
62e76326 | 1144 | break; |
1145 | } | |
41462d93 | 1146 | } |
1147 | } | |
1148 | ||
545782b8 | 1149 | /* |
1150 | * FwdState::reforward | |
1151 | * | |
1152 | * returns TRUE if the transaction SHOULD be re-forwarded to the | |
8bbb16e3 | 1153 | * next choice in the serverDestinations list. This method is called when |
545782b8 | 1154 | * server-side communication completes normally, or experiences |
1155 | * some error after receiving the end of HTTP headers. | |
1156 | */ | |
b6b6f466 | 1157 | int |
1158 | FwdState::reforward() | |
db1cd23c | 1159 | { |
b6b6f466 | 1160 | StoreEntry *e = entry; |
db1cd23c | 1161 | http_status s; |
c4a88a3e CT |
1162 | |
1163 | if (EBIT_TEST(e->flags, ENTRY_ABORTED)) { | |
1164 | debugs(17, 3, HERE << "entry aborted"); | |
1165 | return 0; | |
1166 | } | |
1167 | ||
db1cd23c | 1168 | assert(e->store_status == STORE_PENDING); |
1169 | assert(e->mem_obj); | |
bc87dc25 | 1170 | #if URL_CHECKSUM_DEBUG |
62e76326 | 1171 | |
528b2c61 | 1172 | e->mem_obj->checkUrlChecksum(); |
bc87dc25 | 1173 | #endif |
62e76326 | 1174 | |
cfd66529 | 1175 | debugs(17, 3, HERE << e->url() << "?" ); |
62e76326 | 1176 | |
d6eb18d6 | 1177 | if (!EBIT_TEST(e->flags, ENTRY_FWD_HDR_WAIT)) { |
cfd66529 | 1178 | debugs(17, 3, HERE << "No, ENTRY_FWD_HDR_WAIT isn't set"); |
62e76326 | 1179 | return 0; |
d6eb18d6 | 1180 | } |
62e76326 | 1181 | |
437823b4 | 1182 | if (n_tries > Config.forward_max_tries) |
62e76326 | 1183 | return 0; |
1184 | ||
b6b6f466 | 1185 | if (origin_tries > 1) |
4ed0e075 | 1186 | return 0; |
1187 | ||
58217e94 | 1188 | if (request->bodyNibbled()) |
62e76326 | 1189 | return 0; |
1190 | ||
8652f8e7 AJ |
1191 | if (serverDestinations.size() <= 1) { |
1192 | // NP: <= 1 since total count includes the recently failed one. | |
cfd66529 | 1193 | debugs(17, 3, HERE << "No alternative forwarding paths left"); |
62e76326 | 1194 | return 0; |
db1cd23c | 1195 | } |
62e76326 | 1196 | |
528b2c61 | 1197 | s = e->getReply()->sline.status; |
cfd66529 | 1198 | debugs(17, 3, HERE << "status " << s); |
b6b6f466 | 1199 | return reforwardableStatus(s); |
db1cd23c | 1200 | } |
1201 | ||
2ac4f6b5 AR |
1202 | /** |
1203 | * Create "503 Service Unavailable" or "504 Gateway Timeout" error depending | |
1204 | * on whether this is a validation request. RFC 2616 says that we MUST reply | |
1205 | * with "504 Gateway Timeout" if validation fails and cached reply has | |
1206 | * proxy-revalidate, must-revalidate or s-maxage Cache-Control directive. | |
1207 | */ | |
1208 | ErrorState * | |
2c065fc8 | 1209 | FwdState::makeConnectingError(const err_type type) const |
2ac4f6b5 | 1210 | { |
913524f0 AJ |
1211 | return new ErrorState(type, request->flags.need_validation ? |
1212 | HTTP_GATEWAY_TIMEOUT : HTTP_SERVICE_UNAVAILABLE, request); | |
2ac4f6b5 AR |
1213 | } |
1214 | ||
b6b6f466 | 1215 | static void |
1216 | fwdStats(StoreEntry * s) | |
64d8034e | 1217 | { |
b6b6f466 | 1218 | int i; |
1219 | int j; | |
1220 | storeAppendPrintf(s, "Status"); | |
62e76326 | 1221 | |
b6b6f466 | 1222 | for (j = 0; j <= MAX_FWD_STATS_IDX; j++) { |
1223 | storeAppendPrintf(s, "\ttry#%d", j + 1); | |
64d8034e | 1224 | } |
64d8034e | 1225 | |
b6b6f466 | 1226 | storeAppendPrintf(s, "\n"); |
0185bd6f | 1227 | |
b6b6f466 | 1228 | for (i = 0; i <= (int) HTTP_INVALID_HEADER; i++) { |
1229 | if (FwdReplyCodes[0][i] == 0) | |
1230 | continue; | |
0185bd6f | 1231 | |
b6b6f466 | 1232 | storeAppendPrintf(s, "%3d", i); |
0185bd6f | 1233 | |
b6b6f466 | 1234 | for (j = 0; j <= MAX_FWD_STATS_IDX; j++) { |
1235 | storeAppendPrintf(s, "\t%d", FwdReplyCodes[j][i]); | |
62e76326 | 1236 | } |
62e76326 | 1237 | |
b6b6f466 | 1238 | storeAppendPrintf(s, "\n"); |
e0ebe27c | 1239 | } |
7197b20d | 1240 | } |
1241 | ||
a4bd7d1f | 1242 | |
b6b6f466 | 1243 | /**** STATIC MEMBER FUNCTIONS *************************************************/ |
db1cd23c | 1244 | |
b6b6f466 | 1245 | bool |
1246 | FwdState::reforwardableStatus(http_status s) | |
db1cd23c | 1247 | { |
b6b6f466 | 1248 | switch (s) { |
62e76326 | 1249 | |
b6b6f466 | 1250 | case HTTP_BAD_GATEWAY: |
62e76326 | 1251 | |
b6b6f466 | 1252 | case HTTP_GATEWAY_TIMEOUT: |
1253 | return true; | |
62e76326 | 1254 | |
b6b6f466 | 1255 | case HTTP_FORBIDDEN: |
62e76326 | 1256 | |
b6b6f466 | 1257 | case HTTP_INTERNAL_SERVER_ERROR: |
62e76326 | 1258 | |
b6b6f466 | 1259 | case HTTP_NOT_IMPLEMENTED: |
62e76326 | 1260 | |
b6b6f466 | 1261 | case HTTP_SERVICE_UNAVAILABLE: |
1262 | return Config.retry.onerror; | |
62e76326 | 1263 | |
b6b6f466 | 1264 | default: |
1265 | return false; | |
db1cd23c | 1266 | } |
b6b6f466 | 1267 | |
1268 | /* NOTREACHED */ | |
db1cd23c | 1269 | } |
8ddcc35d | 1270 | |
06093389 AJ |
1271 | /** |
1272 | * Decide where details need to be gathered to correctly describe a persistent connection. | |
1273 | * What is needed: | |
642a305c AJ |
1274 | * - the address/port details about this link |
1275 | * - domain name of server at other end of this link (either peer or requested host) | |
06093389 | 1276 | */ |
781ce8ff | 1277 | void |
642a305c | 1278 | FwdState::pconnPush(Comm::ConnectionPointer &conn, const char *domain) |
781ce8ff | 1279 | { |
642a305c AJ |
1280 | if (conn->getPeer()) { |
1281 | fwdPconnPool->push(conn, conn->getPeer()->name); | |
06093389 | 1282 | } else { |
642a305c | 1283 | fwdPconnPool->push(conn, domain); |
06093389 | 1284 | } |
781ce8ff | 1285 | } |
1286 | ||
8ddcc35d | 1287 | void |
b6b6f466 | 1288 | FwdState::initModule() |
8ddcc35d | 1289 | { |
6852be71 | 1290 | RegisterWithCacheManager(); |
8ddcc35d | 1291 | } |
1292 | ||
62ee09ca | 1293 | void |
84f50787 | 1294 | FwdState::RegisterWithCacheManager(void) |
62ee09ca | 1295 | { |
8822ebee | 1296 | Mgr::RegisterAction("forward", "Request Forwarding Statistics", fwdStats, 0, 1); |
62ee09ca | 1297 | } |
1298 | ||
b6b6f466 | 1299 | void |
1300 | FwdState::logReplyStatus(int tries, http_status status) | |
8ddcc35d | 1301 | { |
1302 | if (status > HTTP_INVALID_HEADER) | |
62e76326 | 1303 | return; |
1304 | ||
75eb730e | 1305 | assert(tries >= 0); |
62e76326 | 1306 | |
8ddcc35d | 1307 | if (tries > MAX_FWD_STATS_IDX) |
62e76326 | 1308 | tries = MAX_FWD_STATS_IDX; |
1309 | ||
8ddcc35d | 1310 | FwdReplyCodes[tries][status]++; |
1311 | } | |
1312 | ||
b6b6f466 | 1313 | /**** PRIVATE NON-MEMBER FUNCTIONS ********************************************/ |
62e76326 | 1314 | |
057f5854 | 1315 | /* |
1316 | * DPW 2007-05-19 | |
1317 | * Formerly static, but now used by client_side_request.cc | |
1318 | */ | |
425de4c8 AJ |
1319 | /// Checks for a TOS value to apply depending on the ACL |
1320 | tos_t | |
b6b6f466 | 1321 | aclMapTOS(acl_tos * head, ACLChecklist * ch) |
b6a2f15e | 1322 | { |
b6b6f466 | 1323 | acl_tos *l; |
62e76326 | 1324 | |
b6b6f466 | 1325 | for (l = head; l; l = l->next) { |
2efeb0b7 | 1326 | if (!l->aclList || ch->fastCheck(l->aclList) == ACCESS_ALLOWED) |
b6b6f466 | 1327 | return l->tos; |
1328 | } | |
5894ad28 | 1329 | |
b6b6f466 | 1330 | return 0; |
1331 | } | |
5894ad28 | 1332 | |
425de4c8 AJ |
1333 | /// Checks for a netfilter mark value to apply depending on the ACL |
1334 | nfmark_t | |
1335 | aclMapNfmark(acl_nfmark * head, ACLChecklist * ch) | |
1336 | { | |
1337 | acl_nfmark *l; | |
1338 | ||
1339 | for (l = head; l; l = l->next) { | |
2efeb0b7 | 1340 | if (!l->aclList || ch->fastCheck(l->aclList) == ACCESS_ALLOWED) |
425de4c8 AJ |
1341 | return l->nfmark; |
1342 | } | |
1343 | ||
1344 | return 0; | |
1345 | } | |
1346 | ||
cfd66529 | 1347 | void |
f9b72e0c | 1348 | getOutgoingAddress(HttpRequest * request, Comm::ConnectionPointer conn) |
b6b6f466 | 1349 | { |
07f889c1 | 1350 | // skip if an outgoing address is already set. |
cfd66529 AJ |
1351 | if (!conn->local.IsAnyAddr()) return; |
1352 | ||
07f889c1 AJ |
1353 | // ensure that at minimum the wildcard local matches remote protocol |
1354 | if (conn->remote.IsIPv4()) | |
1355 | conn->local.SetIPv4(); | |
1356 | ||
cfd66529 | 1357 | // maybe use TPROXY client address |
b0758e04 | 1358 | if (request && request->flags.spoof_client_ip) { |
739b352a | 1359 | if (!conn->getPeer() || !conn->getPeer()->options.no_tproxy) { |
96d64448 AJ |
1360 | #if FOLLOW_X_FORWARDED_FOR && LINUX_NETFILTER |
1361 | if (Config.onoff.tproxy_uses_indirect_client) | |
45906573 | 1362 | conn->local = request->indirect_client_addr; |
96d64448 AJ |
1363 | else |
1364 | #endif | |
45906573 | 1365 | conn->local = request->client_addr; |
cfd66529 AJ |
1366 | // some flags need setting on the socket to use this address |
1367 | conn->flags |= COMM_DOBIND; | |
1368 | conn->flags |= COMM_TRANSPARENT; | |
1369 | return; | |
1370 | } | |
b0758e04 AJ |
1371 | // else no tproxy today ... |
1372 | } | |
c303f6e3 | 1373 | |
b50e327b | 1374 | if (!Config.accessList.outgoing_address) { |
cfd66529 | 1375 | return; // anything will do. |
b50e327b AJ |
1376 | } |
1377 | ||
c0941a6a | 1378 | ACLFilledChecklist ch(NULL, request, NULL); |
739b352a | 1379 | ch.dst_peer = conn->getPeer(); |
cfd66529 AJ |
1380 | ch.dst_addr = conn->remote; |
1381 | ||
1382 | // TODO use the connection details in ACL. | |
1383 | // needs a bit of rework in ACLFilledChecklist to use Comm::Connection instead of ConnStateData | |
6db78a1a | 1384 | |
cfd66529 AJ |
1385 | acl_address *l; |
1386 | for (l = Config.accessList.outgoing_address; l; l = l->next) { | |
1387 | ||
1388 | /* check if the outgoing address is usable to the destination */ | |
1389 | if (conn->remote.IsIPv4() != l->addr.IsIPv4()) continue; | |
1390 | ||
1391 | /* check ACLs for this outgoing address */ | |
2efeb0b7 | 1392 | if (!l->aclList || ch.fastCheck(l->aclList) == ACCESS_ALLOWED) { |
cfd66529 AJ |
1393 | conn->local = l->addr; |
1394 | return; | |
1395 | } | |
1396 | } | |
b6b6f466 | 1397 | } |
62e76326 | 1398 | |
425de4c8 AJ |
1399 | tos_t |
1400 | GetTosToServer(HttpRequest * request) | |
1401 | { | |
1402 | ACLFilledChecklist ch(NULL, request, NULL); | |
1403 | ||
1404 | if (request) { | |
1405 | ch.src_addr = request->client_addr; | |
1406 | ch.my_addr = request->my_addr; | |
1407 | } | |
1408 | ||
1409 | return aclMapTOS(Ip::Qos::TheConfig.tosToServer, &ch); | |
1410 | } | |
1411 | ||
1412 | nfmark_t | |
1413 | GetNfmarkToServer(HttpRequest * request) | |
b6b6f466 | 1414 | { |
c0941a6a | 1415 | ACLFilledChecklist ch(NULL, request, NULL); |
62e76326 | 1416 | |
b6b6f466 | 1417 | if (request) { |
1418 | ch.src_addr = request->client_addr; | |
1419 | ch.my_addr = request->my_addr; | |
b6a2f15e | 1420 | } |
62e76326 | 1421 | |
425de4c8 | 1422 | return aclMapNfmark(Ip::Qos::TheConfig.nfmarkToServer, &ch); |
b6a2f15e | 1423 | } |