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41462d93 | 1 | /* |
77b1029d | 2 | * Copyright (C) 1996-2020 The Squid Software Foundation and contributors |
e25c139f | 3 | * |
bbc27441 AJ |
4 | * Squid software is distributed under GPLv2+ license and includes |
5 | * contributions from numerous individuals and organizations. | |
6 | * Please see the COPYING and CONTRIBUTORS files for details. | |
41462d93 | 7 | */ |
8 | ||
bbc27441 AJ |
9 | /* DEBUG: section 17 Request Forwarding */ |
10 | ||
582c2af2 | 11 | #include "squid.h" |
4bf68cfa | 12 | #include "AccessLogEntry.h" |
289848ca | 13 | #include "acl/Address.h" |
c0941a6a AR |
14 | #include "acl/FilledChecklist.h" |
15 | #include "acl/Gadgets.h" | |
5ae65581 | 16 | #include "anyp/PortCfg.h" |
25b481e6 | 17 | #include "CacheManager.h" |
602d9612 | 18 | #include "CachePeer.h" |
582c2af2 | 19 | #include "client_side.h" |
92ae4c86 | 20 | #include "clients/forward.h" |
f5e17947 | 21 | #include "clients/HttpTunneler.h" |
f9b72e0c | 22 | #include "comm/Connection.h" |
aed188fd | 23 | #include "comm/ConnOpener.h" |
d841c88d | 24 | #include "comm/Loops.h" |
582c2af2 | 25 | #include "CommCalls.h" |
aa839030 | 26 | #include "errorpage.h" |
582c2af2 | 27 | #include "event.h" |
fc54b8d2 | 28 | #include "fd.h" |
aa839030 | 29 | #include "fde.h" |
eb13c21e | 30 | #include "FwdState.h" |
582c2af2 | 31 | #include "globals.h" |
fc54b8d2 | 32 | #include "gopher.h" |
55622953 | 33 | #include "HappyConnOpener.h" |
bbaf2685 | 34 | #include "hier_code.h" |
fc54b8d2 | 35 | #include "http.h" |
d3dddfb5 | 36 | #include "http/Stream.h" |
924f73bc | 37 | #include "HttpReply.h" |
aa839030 | 38 | #include "HttpRequest.h" |
582c2af2 | 39 | #include "icmp/net_db.h" |
fc54b8d2 | 40 | #include "internal.h" |
582c2af2 | 41 | #include "ip/Intercept.h" |
244da4ad | 42 | #include "ip/NfMarkConfig.h" |
425de4c8 | 43 | #include "ip/QosConfig.h" |
582c2af2 | 44 | #include "ip/tools.h" |
aa839030 | 45 | #include "MemObject.h" |
582c2af2 | 46 | #include "mgr/Registration.h" |
fc54b8d2 | 47 | #include "neighbors.h" |
781ce8ff | 48 | #include "pconn.h" |
e8dca475 | 49 | #include "PeerPoolMgr.h" |
55622953 | 50 | #include "ResolvedPeers.h" |
a72b6e88 | 51 | #include "security/BlindPeerConnector.h" |
4d5904f7 | 52 | #include "SquidConfig.h" |
aa839030 | 53 | #include "SquidTime.h" |
32f1ca3f | 54 | #include "ssl/PeekingPeerConnector.h" |
aa839030 | 55 | #include "Store.h" |
e87137f1 | 56 | #include "StoreClient.h" |
5eb529cb | 57 | #include "urn.h" |
fc54b8d2 | 58 | #include "whois.h" |
cb4f4424 | 59 | #if USE_OPENSSL |
2cef0ca6 AR |
60 | #include "ssl/cert_validate_message.h" |
61 | #include "ssl/Config.h" | |
4d16918e | 62 | #include "ssl/ErrorDetail.h" |
602d9612 | 63 | #include "ssl/helper.h" |
fd4624d7 | 64 | #include "ssl/ServerBump.h" |
602d9612 | 65 | #include "ssl/support.h" |
fcfdf7f9 AJ |
66 | #else |
67 | #include "security/EncryptorAnswer.h" | |
4db984be | 68 | #endif |
1a30fdf5 AJ |
69 | |
70 | #include <cerrno> | |
cfd66529 | 71 | |
575d05c4 | 72 | static CLCB fwdServerClosedWrapper; |
b6b6f466 | 73 | |
8ddcc35d | 74 | static OBJH fwdStats; |
75 | ||
76 | #define MAX_FWD_STATS_IDX 9 | |
955394ce | 77 | static int FwdReplyCodes[MAX_FWD_STATS_IDX + 1][Http::scInvalidHeader + 1]; |
db1cd23c | 78 | |
55622953 CT |
79 | PconnPool *fwdPconnPool = new PconnPool("server-peers", nullptr); |
80 | ||
b6b6f466 | 81 | CBDATA_CLASS_INIT(FwdState); |
781ce8ff | 82 | |
a72b6e88 | 83 | class FwdStatePeerAnswerDialer: public CallDialer, public Security::PeerConnector::CbDialer |
a23223bf CT |
84 | { |
85 | public: | |
fcfdf7f9 | 86 | typedef void (FwdState::*Method)(Security::EncryptorAnswer &); |
a23223bf CT |
87 | |
88 | FwdStatePeerAnswerDialer(Method method, FwdState *fwd): | |
f53969cc | 89 | method_(method), fwd_(fwd), answer_() {} |
a23223bf CT |
90 | |
91 | /* CallDialer API */ | |
92 | virtual bool canDial(AsyncCall &call) { return fwd_.valid(); } | |
93 | void dial(AsyncCall &call) { ((&(*fwd_))->*method_)(answer_); } | |
94 | virtual void print(std::ostream &os) const { | |
e2849af8 A |
95 | os << '(' << fwd_.get() << ", " << answer_ << ')'; |
96 | } | |
a23223bf | 97 | |
a72b6e88 | 98 | /* Security::PeerConnector::CbDialer API */ |
fcfdf7f9 | 99 | virtual Security::EncryptorAnswer &answer() { return answer_; } |
a23223bf CT |
100 | |
101 | private: | |
102 | Method method_; | |
103 | CbcPointer<FwdState> fwd_; | |
fcfdf7f9 | 104 | Security::EncryptorAnswer answer_; |
a23223bf | 105 | }; |
a23223bf | 106 | |
429871db | 107 | void |
108 | FwdState::abort(void* d) | |
109 | { | |
110 | FwdState* fwd = (FwdState*)d; | |
6ecaf21a | 111 | Pointer tmp = fwd; // Grab a temporary pointer to keep the object alive during our scope. |
429871db | 112 | |
6b679a01 | 113 | if (Comm::IsConnOpen(fwd->serverConnection())) { |
e8dca475 | 114 | fwd->closeServerConnection("store entry aborted"); |
6dd9a2e4 AJ |
115 | } else { |
116 | debugs(17, 7, HERE << "store entry aborted; no connection to close"); | |
cff02fa6 | 117 | } |
6043e368 | 118 | fwd->stopAndDestroy("store entry aborted"); |
429871db | 119 | } |
120 | ||
e8dca475 CT |
121 | void |
122 | FwdState::closeServerConnection(const char *reason) | |
123 | { | |
124 | debugs(17, 3, "because " << reason << "; " << serverConn); | |
398bc066 CT |
125 | comm_remove_close_handler(serverConn->fd, closeHandler); |
126 | closeHandler = NULL; | |
e8dca475 CT |
127 | fwdPconnPool->noteUses(fd_table[serverConn->fd].pconn.uses); |
128 | serverConn->close(); | |
129 | } | |
130 | ||
b6b6f466 | 131 | /**** PUBLIC INTERFACE ********************************************************/ |
c7f9eb6d | 132 | |
4bf68cfa | 133 | FwdState::FwdState(const Comm::ConnectionPointer &client, StoreEntry * e, HttpRequest * r, const AccessLogEntryPointer &alp): |
cc8c4af2 AJ |
134 | entry(e), |
135 | request(r), | |
136 | al(alp), | |
137 | err(NULL), | |
138 | clientConn(client), | |
139 | start_t(squid_curtime), | |
140 | n_tries(0), | |
55622953 | 141 | destinations(new ResolvedPeers()), |
cc8c4af2 | 142 | pconnRace(raceImpossible) |
db1cd23c | 143 | { |
cc8c4af2 | 144 | debugs(17, 2, "Forwarding client request " << client << ", url=" << e->url()); |
b248c2a3 | 145 | HTTPMSGLOCK(request); |
1bfe9ade | 146 | e->lock("FwdState"); |
cc8c4af2 AJ |
147 | flags.connected_okay = false; |
148 | flags.dont_retry = false; | |
149 | flags.forward_completed = false; | |
55622953 | 150 | flags.destinationsFound = false; |
cc8c4af2 | 151 | debugs(17, 3, "FwdState constructed, this=" << this); |
7a0fb323 | 152 | } |
153 | ||
154 | // Called once, right after object creation, when it is safe to set self | |
fc68f6b1 | 155 | void FwdState::start(Pointer aSelf) |
156 | { | |
7a0fb323 | 157 | // Protect ourselves from being destroyed when the only Server pointing |
158 | // to us is gone (while we expect to talk to more Servers later). | |
159 | // Once we set self, we are responsible for clearing it when we do not | |
160 | // expect to talk to any servers. | |
161 | self = aSelf; // refcounted | |
162 | ||
163 | // We hope that either the store entry aborts or peer is selected. | |
164 | // Otherwise we are going to leak our object. | |
34266cde | 165 | |
92cfc72f CT |
166 | // Ftp::Relay needs to preserve control connection on data aborts |
167 | // so it registers its own abort handler that calls ours when needed. | |
168 | if (!request->flags.ftpNative) | |
169 | entry->registerAbort(FwdState::abort, this); | |
bfe4e2fe | 170 | |
3dde9e52 CT |
171 | // just in case; should already be initialized to false |
172 | request->flags.pinned = false; | |
173 | ||
32c32865 | 174 | #if STRICT_ORIGINAL_DST |
bfe4e2fe AJ |
175 | // Bug 3243: CVE 2009-0801 |
176 | // Bypass of browser same-origin access control in intercepted communication | |
177 | // To resolve this we must force DIRECT and only to the original client destination. | |
0d901ef4 | 178 | const bool isIntercepted = request && !request->flags.redirected && (request->flags.intercepted || request->flags.interceptTproxy); |
2962f8b8 AJ |
179 | const bool useOriginalDst = Config.onoff.client_dst_passthru || (request && !request->flags.hostVerified); |
180 | if (isIntercepted && useOriginalDst) { | |
d7ce0bcd | 181 | selectPeerForIntercepted(); |
7177edfb | 182 | return; |
bfe4e2fe | 183 | } |
32c32865 AJ |
184 | #endif |
185 | ||
7177edfb | 186 | // do full route options selection |
6043e368 AR |
187 | startSelectingDestinations(request, al, entry); |
188 | } | |
189 | ||
190 | /// ends forwarding; relies on refcounting so the effect may not be immediate | |
191 | void | |
192 | FwdState::stopAndDestroy(const char *reason) | |
193 | { | |
194 | debugs(17, 3, "for " << reason); | |
55622953 CT |
195 | |
196 | if (opening()) | |
197 | cancelOpening(reason); | |
198 | ||
6043e368 AR |
199 | PeerSelectionInitiator::subscribed = false; // may already be false |
200 | self = nullptr; // we hope refcounting destroys us soon; may already be nil | |
201 | /* do not place any code here as this object may be gone by now */ | |
db1cd23c | 202 | } |
203 | ||
55622953 CT |
204 | /// Notify connOpener that we no longer need connections. We do not have to do |
205 | /// this -- connOpener would eventually notice on its own, but notifying reduces | |
206 | /// waste and speeds up spare connection opening for other transactions (that | |
207 | /// could otherwise wait for this transaction to use its spare allowance). | |
208 | void | |
209 | FwdState::cancelOpening(const char *reason) | |
210 | { | |
211 | assert(calls.connector); | |
212 | calls.connector->cancel(reason); | |
213 | calls.connector = nullptr; | |
214 | notifyConnOpener(); | |
215 | connOpener.clear(); | |
216 | } | |
217 | ||
32c32865 | 218 | #if STRICT_ORIGINAL_DST |
d7ce0bcd AR |
219 | /// bypasses peerSelect() when dealing with intercepted requests |
220 | void | |
221 | FwdState::selectPeerForIntercepted() | |
222 | { | |
3dde9e52 CT |
223 | // We do not support re-wrapping inside CONNECT. |
224 | // Our only alternative is to fake a noteDestination() call. | |
225 | ||
d7ce0bcd | 226 | // use pinned connection if available |
693cb033 | 227 | if (ConnStateData *client = request->pinnedConnection()) { |
3dde9e52 CT |
228 | // emulate the PeerSelector::selectPinned() "Skip ICP" effect |
229 | entry->ping_status = PING_DONE; | |
230 | ||
55622953 | 231 | usePinned(); |
693cb033 | 232 | return; |
d7ce0bcd AR |
233 | } |
234 | ||
7177edfb | 235 | // use client original destination as second preferred choice |
3dde9e52 | 236 | const auto p = new Comm::Connection(); |
7177edfb AJ |
237 | p->peerType = ORIGINAL_DST; |
238 | p->remote = clientConn->local; | |
239 | getOutgoingAddress(request, p); | |
240 | ||
241 | debugs(17, 3, HERE << "using client original destination: " << *p); | |
55622953 CT |
242 | destinations->addPath(p); |
243 | destinations->destinationsFinalized = true; | |
244 | PeerSelectionInitiator::subscribed = false; | |
245 | useDestinations(); | |
d7ce0bcd | 246 | } |
32c32865 | 247 | #endif |
d7ce0bcd | 248 | |
802a8c1d | 249 | void |
250 | FwdState::completed() | |
41462d93 | 251 | { |
e857372a | 252 | if (flags.forward_completed) { |
e0236918 | 253 | debugs(17, DBG_IMPORTANT, HERE << "FwdState::completed called on a completed request! Bad!"); |
fc68f6b1 | 254 | return; |
255 | } | |
256 | ||
e857372a | 257 | flags.forward_completed = true; |
802a8c1d | 258 | |
16b70e2a CT |
259 | request->hier.stopPeerClock(false); |
260 | ||
c4a88a3e CT |
261 | if (EBIT_TEST(entry->flags, ENTRY_ABORTED)) { |
262 | debugs(17, 3, HERE << "entry aborted"); | |
263 | return ; | |
264 | } | |
265 | ||
bc87dc25 | 266 | #if URL_CHECKSUM_DEBUG |
62e76326 | 267 | |
b6b6f466 | 268 | entry->mem_obj->checkUrlChecksum(); |
225644d7 | 269 | #endif |
62e76326 | 270 | |
b6b6f466 | 271 | if (entry->store_status == STORE_PENDING) { |
272 | if (entry->isEmpty()) { | |
a04b7e6e | 273 | if (!err) // we quit (e.g., fd closed) before an error or content |
7e6eabbc | 274 | fail(new ErrorState(ERR_READ_ERROR, Http::scBadGateway, request, al)); |
b6b6f466 | 275 | assert(err); |
276 | errorAppendEntry(entry, err); | |
277 | err = NULL; | |
cb4f4424 | 278 | #if USE_OPENSSL |
2cef0ca6 AR |
279 | if (request->flags.sslPeek && request->clientConnectionManager.valid()) { |
280 | CallJobHere1(17, 4, request->clientConnectionManager, ConnStateData, | |
801cfc26 | 281 | ConnStateData::httpsPeeked, ConnStateData::PinnedIdleContext(Comm::ConnectionPointer(nullptr), request)); |
2cef0ca6 AR |
282 | } |
283 | #endif | |
62e76326 | 284 | } else { |
b6b6f466 | 285 | entry->complete(); |
d88e3c49 | 286 | entry->releaseRequest(); |
62e76326 | 287 | } |
f563eea9 | 288 | } |
62e76326 | 289 | |
b6b6f466 | 290 | if (storePendingNClients(entry) > 0) |
291 | assert(!EBIT_TEST(entry->flags, ENTRY_FWD_HDR_WAIT)); | |
62e76326 | 292 | |
802a8c1d | 293 | } |
294 | ||
295 | FwdState::~FwdState() | |
296 | { | |
cc8c4af2 | 297 | debugs(17, 3, "FwdState destructor start"); |
fc68f6b1 | 298 | |
802a8c1d | 299 | if (! flags.forward_completed) |
fc68f6b1 | 300 | completed(); |
802a8c1d | 301 | |
9d2760b6 AR |
302 | doneWithRetries(); |
303 | ||
6dd9f4bd | 304 | HTTPMSGUNLOCK(request); |
62e76326 | 305 | |
913524f0 | 306 | delete err; |
62e76326 | 307 | |
3900307b | 308 | entry->unregisterAbort(); |
429871db | 309 | |
1bfe9ade | 310 | entry->unlock("FwdState"); |
62e76326 | 311 | |
b6b6f466 | 312 | entry = NULL; |
62e76326 | 313 | |
55622953 CT |
314 | if (opening()) |
315 | cancelOpening("~FwdState"); | |
316 | ||
e8dca475 CT |
317 | if (Comm::IsConnOpen(serverConn)) |
318 | closeServerConnection("~FwdState"); | |
fc68f6b1 | 319 | |
cc8c4af2 | 320 | debugs(17, 3, "FwdState destructed, this=" << this); |
b6b6f466 | 321 | } |
62e76326 | 322 | |
38413773 | 323 | /** |
b6b6f466 | 324 | * This is the entry point for client-side to start forwarding |
325 | * a transaction. It is a static method that may or may not | |
326 | * allocate a FwdState. | |
327 | */ | |
be0c6690 | 328 | void |
4bf68cfa | 329 | FwdState::Start(const Comm::ConnectionPointer &clientConn, StoreEntry *entry, HttpRequest *request, const AccessLogEntryPointer &al) |
b6b6f466 | 330 | { |
b50e327b | 331 | /** \note |
b6b6f466 | 332 | * client_addr == no_addr indicates this is an "internal" request |
333 | * from peer_digest.c, asn.c, netdb.c, etc and should always | |
334 | * be allowed. yuck, I know. | |
335 | */ | |
62e76326 | 336 | |
4dd643d5 | 337 | if ( Config.accessList.miss && !request->client_addr.isNoAddr() && |
4e3f4dc7 | 338 | !request->flags.internal && request->url.getScheme() != AnyP::PROTO_CACHE_OBJECT) { |
b50e327b | 339 | /** |
fbd3636b NR |
340 | * Check if this host is allowed to fetch MISSES from us (miss_access). |
341 | * Intentionally replace the src_addr automatically selected by the checklist code | |
342 | * we do NOT want the indirect client address to be tested here. | |
b6b6f466 | 343 | */ |
c0941a6a | 344 | ACLFilledChecklist ch(Config.accessList.miss, request, NULL); |
cb365059 | 345 | ch.al = al; |
b6b6f466 | 346 | ch.src_addr = request->client_addr; |
cb365059 | 347 | ch.syncAle(request, nullptr); |
06bf5384 | 348 | if (ch.fastCheck().denied()) { |
b6b6f466 | 349 | err_type page_id; |
9ce7856a | 350 | page_id = aclGetDenyInfoPage(&Config.denyInfoList, AclMatchedName, 1); |
b6b6f466 | 351 | |
352 | if (page_id == ERR_NONE) | |
353 | page_id = ERR_FORWARDING_DENIED; | |
354 | ||
7e6eabbc | 355 | const auto anErr = new ErrorState(page_id, Http::scForbidden, request, al); |
f53969cc | 356 | errorAppendEntry(entry, anErr); // frees anErr |
be0c6690 | 357 | return; |
b6b6f466 | 358 | } |
359 | } | |
360 | ||
cfd66529 | 361 | debugs(17, 3, HERE << "'" << entry->url() << "'"); |
f4ef658f | 362 | /* |
363 | * This seems like an odd place to bind mem_obj and request. | |
364 | * Might want to assert that request is NULL at this point | |
365 | */ | |
b248c2a3 | 366 | entry->mem_obj->request = request; |
b6b6f466 | 367 | #if URL_CHECKSUM_DEBUG |
368 | ||
369 | entry->mem_obj->checkUrlChecksum(); | |
370 | #endif | |
371 | ||
372 | if (shutting_down) { | |
373 | /* more yuck */ | |
7e6eabbc | 374 | const auto anErr = new ErrorState(ERR_SHUTTING_DOWN, Http::scServiceUnavailable, request, al); |
f53969cc | 375 | errorAppendEntry(entry, anErr); // frees anErr |
be0c6690 | 376 | return; |
6801f8a8 | 377 | } |
62e76326 | 378 | |
4e3f4dc7 AJ |
379 | if (request->flags.internal) { |
380 | debugs(17, 2, "calling internalStart() due to request flag"); | |
7e6eabbc | 381 | internalStart(clientConn, request, entry, al); |
be0c6690 | 382 | return; |
4e3f4dc7 AJ |
383 | } |
384 | ||
385 | switch (request->url.getScheme()) { | |
b6b6f466 | 386 | |
39a19cb7 | 387 | case AnyP::PROTO_CACHE_OBJECT: |
4e3f4dc7 | 388 | debugs(17, 2, "calling CacheManager due to request scheme " << request->url.getScheme()); |
7e6eabbc | 389 | CacheManager::GetInstance()->start(clientConn, request, entry, al); |
be0c6690 | 390 | return; |
b6b6f466 | 391 | |
0c3d3f65 | 392 | case AnyP::PROTO_URN: |
d2a6dcba | 393 | urnStart(request, entry, al); |
be0c6690 | 394 | return; |
b6b6f466 | 395 | |
396 | default: | |
4bf68cfa | 397 | FwdState::Pointer fwd = new FwdState(clientConn, entry, request, al); |
7a0fb323 | 398 | fwd->start(fwd); |
be0c6690 | 399 | return; |
b6b6f466 | 400 | } |
401 | ||
402 | /* NOTREACHED */ | |
41462d93 | 403 | } |
404 | ||
4bf68cfa AR |
405 | void |
406 | FwdState::fwdStart(const Comm::ConnectionPointer &clientConn, StoreEntry *entry, HttpRequest *request) | |
407 | { | |
408 | // Hides AccessLogEntry.h from code that does not supply ALE anyway. | |
409 | Start(clientConn, entry, request, NULL); | |
410 | } | |
411 | ||
0ce8e93b EB |
412 | /// subtracts time_t values, returning zero if smaller exceeds the larger value |
413 | /// time_t might be unsigned so we need to be careful when subtracting times... | |
414 | static inline time_t | |
415 | diffOrZero(const time_t larger, const time_t smaller) | |
416 | { | |
417 | return (larger > smaller) ? (larger - smaller) : 0; | |
418 | } | |
419 | ||
420 | /// time left to finish the whole forwarding process (which started at fwdStart) | |
421 | time_t | |
422 | FwdState::ForwardTimeout(const time_t fwdStart) | |
423 | { | |
424 | // time already spent on forwarding (0 if clock went backwards) | |
425 | const time_t timeSpent = diffOrZero(squid_curtime, fwdStart); | |
426 | return diffOrZero(Config.Timeout.forward, timeSpent); | |
427 | } | |
428 | ||
429 | bool | |
430 | FwdState::EnoughTimeToReForward(const time_t fwdStart) | |
431 | { | |
432 | return ForwardTimeout(fwdStart) > 0; | |
433 | } | |
434 | ||
cfd66529 | 435 | void |
3dde9e52 | 436 | FwdState::useDestinations() |
cfd66529 | 437 | { |
55622953 CT |
438 | if (!destinations->empty()) { |
439 | connectStart(); | |
cfd66529 | 440 | } else { |
6043e368 AR |
441 | if (PeerSelectionInitiator::subscribed) { |
442 | debugs(17, 4, "wait for more destinations to try"); | |
443 | return; // expect a noteDestination*() call | |
444 | } | |
445 | ||
95b83010 CT |
446 | debugs(17, 3, HERE << "Connection failed: " << entry->url()); |
447 | if (!err) { | |
7e6eabbc | 448 | const auto anErr = new ErrorState(ERR_CANNOT_FORWARD, Http::scInternalServerError, request, al); |
95b83010 | 449 | fail(anErr); |
8652f8e7 | 450 | } // else use actual error from last connection attempt |
6043e368 AR |
451 | |
452 | stopAndDestroy("tried all destinations"); | |
cfd66529 AJ |
453 | } |
454 | } | |
455 | ||
b6b6f466 | 456 | void |
457 | FwdState::fail(ErrorState * errorState) | |
458 | { | |
9b769c67 | 459 | debugs(17, 3, err_type_str[errorState->type] << " \"" << Http::StatusCodeString(errorState->httpStatus) << "\"\n\t" << entry->url()); |
b6b6f466 | 460 | |
913524f0 | 461 | delete err; |
b6b6f466 | 462 | err = errorState; |
463 | ||
e2cc8c07 | 464 | if (!errorState->request) |
b248c2a3 | 465 | errorState->request = request; |
64b66b76 | 466 | |
693cb033 CT |
467 | if (err->type != ERR_ZERO_SIZE_OBJECT) |
468 | return; | |
469 | ||
470 | if (pconnRace == racePossible) { | |
bc81ee68 AR |
471 | debugs(17, 5, HERE << "pconn race happened"); |
472 | pconnRace = raceHappened; | |
55622953 | 473 | destinations->retryPath(serverConn); |
bc81ee68 | 474 | } |
693cb033 CT |
475 | |
476 | if (ConnStateData *pinned_connection = request->pinnedConnection()) { | |
477 | pinned_connection->pinning.zeroReply = true; | |
693cb033 CT |
478 | debugs(17, 4, "zero reply on pinned connection"); |
479 | } | |
b6b6f466 | 480 | } |
481 | ||
38413773 | 482 | /** |
b6b6f466 | 483 | * Frees fwdState without closing FD or generating an abort |
484 | */ | |
485 | void | |
00ae51e4 | 486 | FwdState::unregister(Comm::ConnectionPointer &conn) |
5229395c AJ |
487 | { |
488 | debugs(17, 3, HERE << entry->url() ); | |
489 | assert(serverConnection() == conn); | |
6b679a01 | 490 | assert(Comm::IsConnOpen(conn)); |
398bc066 CT |
491 | comm_remove_close_handler(conn->fd, closeHandler); |
492 | closeHandler = NULL; | |
00ae51e4 | 493 | serverConn = NULL; |
5229395c AJ |
494 | } |
495 | ||
d5430dc8 | 496 | // \deprecated use unregister(Comm::ConnectionPointer &conn) instead |
5229395c | 497 | void |
b6b6f466 | 498 | FwdState::unregister(int fd) |
499 | { | |
5229395c AJ |
500 | debugs(17, 3, HERE << entry->url() ); |
501 | assert(fd == serverConnection()->fd); | |
00ae51e4 | 502 | unregister(serverConn); |
b6b6f466 | 503 | } |
504 | ||
38413773 | 505 | /** |
d5430dc8 | 506 | * FooClient modules call fwdComplete() when they are done |
b6b6f466 | 507 | * downloading an object. Then, we either 1) re-forward the |
508 | * request somewhere else if needed, or 2) call storeComplete() | |
509 | * to finish it off | |
510 | */ | |
511 | void | |
512 | FwdState::complete() | |
513 | { | |
66d51f4f AR |
514 | const auto replyStatus = entry->mem().baseReply().sline.status(); |
515 | debugs(17, 3, *entry << " status " << replyStatus << ' ' << entry->url()); | |
b6b6f466 | 516 | #if URL_CHECKSUM_DEBUG |
517 | ||
518 | entry->mem_obj->checkUrlChecksum(); | |
519 | #endif | |
520 | ||
66d51f4f | 521 | logReplyStatus(n_tries, replyStatus); |
b6b6f466 | 522 | |
523 | if (reforward()) { | |
66d51f4f | 524 | debugs(17, 3, "re-forwarding " << replyStatus << " " << entry->url()); |
b6b6f466 | 525 | |
6b679a01 | 526 | if (Comm::IsConnOpen(serverConn)) |
00ae51e4 | 527 | unregister(serverConn); |
b6b6f466 | 528 | |
cfd66529 AJ |
529 | entry->reset(); |
530 | ||
3dde9e52 | 531 | useDestinations(); |
8652f8e7 | 532 | |
b6b6f466 | 533 | } else { |
6b679a01 | 534 | if (Comm::IsConnOpen(serverConn)) |
66d51f4f | 535 | debugs(17, 3, "server FD " << serverConnection()->fd << " not re-forwarding status " << replyStatus); |
6b679a01 | 536 | else |
66d51f4f | 537 | debugs(17, 3, "server (FD closed) not re-forwarding status " << replyStatus); |
9e5c22cf | 538 | entry->complete(); |
fc68f6b1 | 539 | |
6b679a01 | 540 | if (!Comm::IsConnOpen(serverConn)) |
fc68f6b1 | 541 | completed(); |
542 | ||
6043e368 | 543 | stopAndDestroy("forwarding completed"); |
b6b6f466 | 544 | } |
545 | } | |
546 | ||
6043e368 AR |
547 | void |
548 | FwdState::noteDestination(Comm::ConnectionPointer path) | |
549 | { | |
55622953 CT |
550 | flags.destinationsFound = true; |
551 | ||
552 | if (!path) { | |
553 | // We can call usePinned() without fear of clashing with an earlier | |
554 | // forwarding attempt because PINNED must be the first destination. | |
555 | assert(destinations->empty()); | |
556 | usePinned(); | |
557 | return; | |
558 | } | |
559 | ||
560 | debugs(17, 3, path); | |
561 | ||
55622953 CT |
562 | destinations->addPath(path); |
563 | ||
564 | if (Comm::IsConnOpen(serverConn)) { | |
565 | // We are already using a previously opened connection, so we cannot be | |
566 | // waiting for connOpener. We still receive destinations for backup. | |
567 | Must(!opening()); | |
568 | return; | |
569 | } | |
570 | ||
571 | if (opening()) { | |
572 | notifyConnOpener(); | |
573 | return; // and continue to wait for FwdState::noteConnection() callback | |
574 | } | |
575 | ||
576 | // This is the first path candidate we have seen. Create connOpener. | |
577 | useDestinations(); | |
6043e368 | 578 | } |
b6b6f466 | 579 | |
6043e368 AR |
580 | void |
581 | FwdState::noteDestinationsEnd(ErrorState *selectionError) | |
b6b6f466 | 582 | { |
6043e368 | 583 | PeerSelectionInitiator::subscribed = false; |
55622953 | 584 | destinations->destinationsFinalized = true; |
6043e368 | 585 | |
55622953 | 586 | if (!flags.destinationsFound) { |
6043e368 AR |
587 | if (selectionError) { |
588 | debugs(17, 3, "Will abort forwarding because path selection has failed."); | |
589 | Must(!err); // if we tried to connect, then path selection succeeded | |
590 | fail(selectionError); | |
591 | } | |
592 | else if (err) | |
593 | debugs(17, 3, "Will abort forwarding because all found paths have failed."); | |
594 | else | |
595 | debugs(17, 3, "Will abort forwarding because path selection found no paths."); | |
596 | ||
3dde9e52 | 597 | useDestinations(); // will detect and handle the lack of paths |
6043e368 AR |
598 | return; |
599 | } | |
600 | // else continue to use one of the previously noted destinations; | |
601 | // if all of them fail, forwarding as whole will fail | |
602 | Must(!selectionError); // finding at least one path means selection succeeded | |
55622953 CT |
603 | |
604 | if (Comm::IsConnOpen(serverConn)) { | |
605 | // We are already using a previously opened connection, so we cannot be | |
606 | // waiting for connOpener. We were receiving destinations for backup. | |
607 | Must(!opening()); | |
608 | return; | |
609 | } | |
610 | ||
611 | Must(opening()); // or we would be stuck with nothing to do or wait for | |
612 | notifyConnOpener(); | |
613 | // and continue to wait for FwdState::noteConnection() callback | |
614 | } | |
615 | ||
616 | /// makes sure connOpener knows that destinations have changed | |
617 | void | |
618 | FwdState::notifyConnOpener() | |
619 | { | |
620 | if (destinations->notificationPending) { | |
621 | debugs(17, 7, "reusing pending notification about " << *destinations); | |
622 | } else { | |
623 | debugs(17, 7, "notifying about " << *destinations); | |
624 | destinations->notificationPending = true; | |
625 | CallJobHere(17, 5, connOpener, HappyConnOpener, noteCandidatesChange); | |
626 | } | |
b6b6f466 | 627 | } |
628 | ||
6043e368 AR |
629 | /**** CALLBACK WRAPPERS ************************************************************/ |
630 | ||
b6b6f466 | 631 | static void |
575d05c4 | 632 | fwdServerClosedWrapper(const CommCloseCbParams ¶ms) |
b6b6f466 | 633 | { |
575d05c4 AJ |
634 | FwdState *fwd = (FwdState *)params.data; |
635 | fwd->serverClosed(params.fd); | |
b6b6f466 | 636 | } |
637 | ||
b6b6f466 | 638 | /**** PRIVATE *****************************************************************/ |
639 | ||
545782b8 | 640 | /* |
641 | * FwdState::checkRetry | |
26ac0430 | 642 | * |
545782b8 | 643 | * Return TRUE if the request SHOULD be retried. This method is |
644 | * called when the HTTP connection fails, or when the connection | |
d5430dc8 | 645 | * is closed before reading the end of HTTP headers from the server. |
545782b8 | 646 | */ |
b6b6f466 | 647 | bool |
648 | FwdState::checkRetry() | |
68bd6892 | 649 | { |
d8fd0f18 | 650 | if (shutting_down) |
b6b6f466 | 651 | return false; |
62e76326 | 652 | |
9d2760b6 AR |
653 | if (!self) { // we have aborted before the server called us back |
654 | debugs(17, 5, HERE << "not retrying because of earlier abort"); | |
655 | // we will be destroyed when the server clears its Pointer to us | |
656 | return false; | |
657 | } | |
658 | ||
b6b6f466 | 659 | if (entry->store_status != STORE_PENDING) |
660 | return false; | |
62e76326 | 661 | |
b6b6f466 | 662 | if (!entry->isEmpty()) |
663 | return false; | |
62e76326 | 664 | |
3eebd267 | 665 | if (exhaustedTries()) |
b6b6f466 | 666 | return false; |
4ed0e075 | 667 | |
3dde9e52 CT |
668 | if (request->flags.pinned && !pinnedCanRetry()) |
669 | return false; | |
670 | ||
0ce8e93b | 671 | if (!EnoughTimeToReForward(start_t)) |
b6b6f466 | 672 | return false; |
62e76326 | 673 | |
b6b6f466 | 674 | if (flags.dont_retry) |
675 | return false; | |
62e76326 | 676 | |
3b9899f7 AR |
677 | if (request->bodyNibbled()) |
678 | return false; | |
679 | ||
0bbd5532 AJ |
680 | // NP: not yet actually connected anywhere. retry is safe. |
681 | if (!flags.connected_okay) | |
682 | return true; | |
683 | ||
5d4989a8 | 684 | if (!checkRetriable()) |
685 | return false; | |
686 | ||
b6b6f466 | 687 | return true; |
68bd6892 | 688 | } |
689 | ||
afc753f3 | 690 | /// Whether we may try sending this request again after a failure. |
b6b6f466 | 691 | bool |
692 | FwdState::checkRetriable() | |
cb928909 | 693 | { |
ccbcff0e AR |
694 | // Optimize: A compliant proxy may retry PUTs, but Squid lacks the [rather |
695 | // complicated] code required to protect the PUT request body from being | |
696 | // nibbled during the first try. Thus, Squid cannot retry some PUTs today. | |
697 | if (request->body_pipe != NULL) | |
698 | return false; | |
699 | ||
c2a7cefd AJ |
700 | // RFC2616 9.1 Safe and Idempotent Methods |
701 | return (request->method.isHttpSafe() || request->method.isIdempotent()); | |
cb928909 | 702 | } |
703 | ||
b6b6f466 | 704 | void |
705 | FwdState::serverClosed(int fd) | |
910169e5 | 706 | { |
8ed21336 | 707 | // XXX: fd is often -1 here |
e8dca475 | 708 | debugs(17, 2, "FD " << fd << " " << entry->url() << " after " << |
8ed21336 AR |
709 | (fd >= 0 ? fd_table[fd].pconn.uses : -1) << " requests"); |
710 | if (fd >= 0 && serverConnection()->fd == fd) | |
e8dca475 | 711 | fwdPconnPool->noteUses(fd_table[fd].pconn.uses); |
3e8c047e | 712 | retryOrBail(); |
713 | } | |
714 | ||
715 | void | |
26ac0430 AJ |
716 | FwdState::retryOrBail() |
717 | { | |
b6b6f466 | 718 | if (checkRetry()) { |
cfd66529 | 719 | debugs(17, 3, HERE << "re-forwarding (" << n_tries << " tries, " << (squid_curtime - start_t) << " secs)"); |
3dde9e52 | 720 | useDestinations(); |
8652f8e7 | 721 | return; |
d8fd0f18 | 722 | } |
62e76326 | 723 | |
9d2760b6 AR |
724 | // TODO: should we call completed() here and move doneWithRetries there? |
725 | doneWithRetries(); | |
726 | ||
16b70e2a CT |
727 | request->hier.stopPeerClock(false); |
728 | ||
8f01bdfb | 729 | if (self != NULL && !err && shutting_down && entry->isEmpty()) { |
7e6eabbc | 730 | const auto anErr = new ErrorState(ERR_SHUTTING_DOWN, Http::scServiceUnavailable, request, al); |
f01d4b80 | 731 | errorAppendEntry(entry, anErr); |
f563eea9 | 732 | } |
62e76326 | 733 | |
6043e368 | 734 | stopAndDestroy("cannot retry"); |
910169e5 | 735 | } |
736 | ||
9d2760b6 AR |
737 | // If the Server quits before nibbling at the request body, the body sender |
738 | // will not know (so that we can retry). Call this if we will not retry. We | |
739 | // will notify the sender so that it does not get stuck waiting for space. | |
740 | void | |
741 | FwdState::doneWithRetries() | |
742 | { | |
743 | if (request && request->body_pipe != NULL) | |
744 | request->body_pipe->expectNoConsumption(); | |
745 | } | |
746 | ||
3e8c047e | 747 | // called by the server that failed after calling unregister() |
748 | void | |
749 | FwdState::handleUnregisteredServerEnd() | |
750 | { | |
cfd66529 | 751 | debugs(17, 2, HERE << "self=" << self << " err=" << err << ' ' << entry->url()); |
6b679a01 | 752 | assert(!Comm::IsConnOpen(serverConn)); |
3e8c047e | 753 | retryOrBail(); |
754 | } | |
755 | ||
55622953 CT |
756 | /// called when a to-peer connection has been successfully obtained or |
757 | /// when all candidate destinations have been tried and all have failed | |
b6b6f466 | 758 | void |
55622953 | 759 | FwdState::noteConnection(HappyConnOpener::Answer &answer) |
41462d93 | 760 | { |
55622953 CT |
761 | calls.connector = nullptr; |
762 | connOpener.clear(); | |
62e76326 | 763 | |
55622953 CT |
764 | Must(n_tries <= answer.n_tries); // n_tries cannot decrease |
765 | n_tries = answer.n_tries; | |
62e76326 | 766 | |
55622953 CT |
767 | if (const auto error = answer.error.get()) { |
768 | flags.dont_retry = true; // or HappyConnOpener would not have given up | |
769 | syncHierNote(answer.conn, request->url.host()); | |
770 | fail(error); | |
771 | answer.error.clear(); // preserve error for errorSendComplete() | |
772 | retryOrBail(); // will notice flags.dont_retry and bail | |
2f538b78 AJ |
773 | return; |
774 | } | |
62e76326 | 775 | |
55622953 | 776 | syncWithServerConn(answer.conn, request->url.host(), answer.reused); |
2f538b78 | 777 | |
55622953 CT |
778 | if (answer.reused) |
779 | return dispatch(); | |
3dde9e52 | 780 | |
55622953 | 781 | // Check if we need to TLS before use |
f5e17947 CT |
782 | if (const CachePeer *peer = serverConnection()->getPeer()) { |
783 | // Assume that it is only possible for the client-first from the | |
784 | // bumping modes to try connect to a remote server. The bumped | |
785 | // requests with other modes are using pinned connections or fails. | |
786 | const bool clientFirstBump = request->flags.sslBumped; | |
787 | // We need a CONNECT tunnel to send encrypted traffic through a proxy, | |
788 | // but we do not support TLS inside TLS, so we exclude HTTPS proxies. | |
789 | const bool originWantsEncryptedTraffic = | |
790 | request->method == Http::METHOD_CONNECT || | |
791 | request->flags.sslPeek || | |
792 | clientFirstBump; | |
793 | if (originWantsEncryptedTraffic && // the "encrypted traffic" part | |
794 | !peer->options.originserver && // the "through a proxy" part | |
795 | !peer->secure.encryptTransport) // the "exclude HTTPS proxies" part | |
796 | return establishTunnelThruProxy(); | |
797 | } | |
798 | ||
799 | secureConnectionToPeerIfNeeded(); | |
800 | } | |
801 | ||
802 | void | |
803 | FwdState::establishTunnelThruProxy() | |
804 | { | |
805 | AsyncCall::Pointer callback = asyncCall(17,4, | |
806 | "FwdState::tunnelEstablishmentDone", | |
807 | Http::Tunneler::CbDialer<FwdState>(&FwdState::tunnelEstablishmentDone, this)); | |
808 | HttpRequest::Pointer requestPointer = request; | |
809 | const auto tunneler = new Http::Tunneler(serverConnection(), requestPointer, callback, connectingTimeout(serverConnection()), al); | |
810 | #if USE_DELAY_POOLS | |
811 | Must(serverConnection()->getPeer()); | |
812 | if (!serverConnection()->getPeer()->options.no_delay) | |
813 | tunneler->setDelayId(entry->mem_obj->mostBytesAllowed()); | |
814 | #endif | |
815 | AsyncJob::Start(tunneler); | |
816 | // and wait for the tunnelEstablishmentDone() call | |
817 | } | |
818 | ||
819 | /// resumes operations after the (possibly failed) HTTP CONNECT exchange | |
820 | void | |
821 | FwdState::tunnelEstablishmentDone(Http::TunnelerAnswer &answer) | |
822 | { | |
823 | if (answer.positive()) { | |
824 | if (answer.leftovers.isEmpty()) { | |
825 | secureConnectionToPeerIfNeeded(); | |
826 | return; | |
827 | } | |
828 | // This should not happen because TLS servers do not speak first. If we | |
829 | // have to handle this, then pass answer.leftovers via a PeerConnector | |
830 | // to ServerBio. See ClientBio::setReadBufData(). | |
831 | static int occurrences = 0; | |
832 | const auto level = (occurrences++ < 100) ? DBG_IMPORTANT : 2; | |
833 | debugs(17, level, "ERROR: Early data after CONNECT response. " << | |
834 | "Found " << answer.leftovers.length() << " bytes. " << | |
835 | "Closing " << serverConnection()); | |
836 | fail(new ErrorState(ERR_CONNECT_FAIL, Http::scBadGateway, request, al)); | |
837 | closeServerConnection("found early data after CONNECT response"); | |
838 | retryOrBail(); | |
839 | return; | |
840 | } | |
841 | ||
842 | // TODO: Reuse to-peer connections after a CONNECT error response. | |
843 | ||
844 | if (const auto peer = serverConnection()->getPeer()) | |
845 | peerConnectFailed(peer); | |
846 | ||
847 | const auto error = answer.squidError.get(); | |
848 | Must(error); | |
849 | answer.squidError.clear(); // preserve error for fail() | |
850 | fail(error); | |
851 | closeServerConnection("Squid-generated CONNECT error"); | |
852 | retryOrBail(); | |
853 | } | |
854 | ||
855 | /// handles an established TCP connection to peer (including origin servers) | |
856 | void | |
857 | FwdState::secureConnectionToPeerIfNeeded() | |
858 | { | |
859 | assert(!request->flags.pinned); | |
860 | ||
3dde9e52 CT |
861 | const CachePeer *p = serverConnection()->getPeer(); |
862 | const bool peerWantsTls = p && p->secure.encryptTransport; | |
863 | // userWillTlsToPeerForUs assumes CONNECT == HTTPS | |
864 | const bool userWillTlsToPeerForUs = p && p->options.originserver && | |
865 | request->method == Http::METHOD_CONNECT; | |
866 | const bool needTlsToPeer = peerWantsTls && !userWillTlsToPeerForUs; | |
f5e17947 CT |
867 | const bool clientFirstBump = request->flags.sslBumped; // client-first (already) bumped connection |
868 | const bool needsBump = request->flags.sslPeek || clientFirstBump; | |
869 | ||
870 | // 'GET https://...' requests. If a peer is used the request is forwarded | |
871 | // as is | |
872 | const bool needTlsToOrigin = !p && request->url.getScheme() == AnyP::PROTO_HTTPS && !clientFirstBump; | |
873 | ||
874 | if (needTlsToPeer || needTlsToOrigin || needsBump) { | |
3dde9e52 CT |
875 | HttpRequest::Pointer requestPointer = request; |
876 | AsyncCall::Pointer callback = asyncCall(17,4, | |
877 | "FwdState::ConnectedToPeer", | |
878 | FwdStatePeerAnswerDialer(&FwdState::connectedToPeer, this)); | |
55622953 | 879 | const auto sslNegotiationTimeout = connectingTimeout(serverConnection()); |
3dde9e52 | 880 | Security::PeerConnector *connector = nullptr; |
a72b6e88 | 881 | #if USE_OPENSSL |
3dde9e52 CT |
882 | if (request->flags.sslPeek) |
883 | connector = new Ssl::PeekingPeerConnector(requestPointer, serverConnection(), clientConn, callback, al, sslNegotiationTimeout); | |
884 | else | |
a72b6e88 | 885 | #endif |
3dde9e52 CT |
886 | connector = new Security::BlindPeerConnector(requestPointer, serverConnection(), callback, al, sslNegotiationTimeout); |
887 | AsyncJob::Start(connector); // will call our callback | |
888 | return; | |
41462d93 | 889 | } |
2f538b78 | 890 | |
fcfdf7f9 | 891 | // if not encrypting just run the post-connect actions |
f5e17947 | 892 | successfullyConnectedToPeer(); |
41462d93 | 893 | } |
894 | ||
f5e17947 | 895 | /// called when all negotiations with the TLS-speaking peer have been completed |
a23223bf | 896 | void |
fcfdf7f9 | 897 | FwdState::connectedToPeer(Security::EncryptorAnswer &answer) |
a23223bf CT |
898 | { |
899 | if (ErrorState *error = answer.error.get()) { | |
900 | fail(error); | |
901 | answer.error.clear(); // preserve error for errorSendComplete() | |
89d7efa5 CT |
902 | if (CachePeer *p = serverConnection()->getPeer()) |
903 | peerConnectFailed(p); | |
4e646287 | 904 | serverConnection()->close(); |
a23223bf CT |
905 | return; |
906 | } | |
907 | ||
56753478 CT |
908 | if (answer.tunneled) { |
909 | // TODO: When ConnStateData establishes tunnels, its state changes | |
910 | // [in ways that may affect logging?]. Consider informing | |
911 | // ConnStateData about our tunnel or otherwise unifying tunnel | |
912 | // establishment [side effects]. | |
913 | unregister(serverConn); // async call owns it now | |
914 | complete(); // destroys us | |
915 | return; | |
916 | } | |
917 | ||
f5e17947 CT |
918 | successfullyConnectedToPeer(); |
919 | } | |
920 | ||
921 | /// called when all negotiations with the peer have been completed | |
922 | void | |
923 | FwdState::successfullyConnectedToPeer() | |
924 | { | |
fcfdf7f9 AJ |
925 | // should reach ConnStateData before the dispatched Client job starts |
926 | CallJobHere1(17, 4, request->clientConnectionManager, ConnStateData, | |
927 | ConnStateData::notePeerConnection, serverConnection()); | |
928 | ||
89d7efa5 CT |
929 | if (serverConnection()->getPeer()) |
930 | peerConnectSucceded(serverConnection()->getPeer()); | |
931 | ||
a23223bf CT |
932 | dispatch(); |
933 | } | |
a23223bf | 934 | |
55622953 | 935 | /// commits to using the given open to-peer connection |
b6b6f466 | 936 | void |
55622953 | 937 | FwdState::syncWithServerConn(const Comm::ConnectionPointer &conn, const char *host, const bool reused) |
41462d93 | 938 | { |
55622953 CT |
939 | Must(IsConnOpen(conn)); |
940 | serverConn = conn; | |
62e76326 | 941 | |
55622953 | 942 | closeHandler = comm_add_close_handler(serverConn->fd, fwdServerClosedWrapper, this); |
62e76326 | 943 | |
55622953 CT |
944 | if (reused) { |
945 | pconnRace = racePossible; | |
946 | ResetMarkingsToServer(request, *serverConn); | |
947 | } else { | |
948 | pconnRace = raceImpossible; | |
949 | // Comm::ConnOpener already applied proper/current markings | |
746beefe | 950 | } |
4b77ea6b | 951 | |
7d1dac79 EB |
952 | syncHierNote(serverConn, host); |
953 | } | |
954 | ||
955 | void | |
956 | FwdState::syncHierNote(const Comm::ConnectionPointer &server, const char *host) | |
957 | { | |
1ce66e29 | 958 | if (request) |
d8165775 | 959 | request->hier.resetPeerNotes(server, host); |
1ce66e29 | 960 | if (al) |
d8165775 | 961 | al->hier.resetPeerNotes(server, host); |
4b77ea6b AR |
962 | } |
963 | ||
8aec3e1b CT |
964 | /** |
965 | * Called after forwarding path selection (via peer select) has taken place | |
966 | * and whenever forwarding needs to attempt a new connection (routing failover). | |
967 | * We have a vector of possible localIP->remoteIP paths now ready to start being connected. | |
968 | */ | |
969 | void | |
970 | FwdState::connectStart() | |
971 | { | |
55622953 | 972 | debugs(17, 3, *destinations << " to " << entry->url()); |
8aec3e1b | 973 | |
daf80700 CT |
974 | Must(!request->pinnedConnection()); |
975 | ||
55622953 CT |
976 | assert(!destinations->empty()); |
977 | assert(!opening()); | |
8aec3e1b | 978 | |
55622953 CT |
979 | // Ditch error page if it was created before. |
980 | // A new one will be created if there's another problem | |
3dde9e52 CT |
981 | delete err; |
982 | err = nullptr; | |
983 | request->clearError(); | |
55622953 | 984 | serverConn = nullptr; |
3dde9e52 | 985 | |
16b70e2a | 986 | request->hier.startPeerClock(); |
777831e0 | 987 | |
55622953 | 988 | calls.connector = asyncCall(17, 5, "FwdState::noteConnection", HappyConnOpener::CbDialer<FwdState>(&FwdState::noteConnection, this)); |
bc81ee68 | 989 | |
55622953 CT |
990 | HttpRequest::Pointer cause = request; |
991 | const auto cs = new HappyConnOpener(destinations, calls.connector, cause, start_t, n_tries, al); | |
992 | cs->setHost(request->url.host()); | |
993 | bool retriable = checkRetriable(); | |
994 | if (!retriable && Config.accessList.serverPconnForNonretriable) { | |
995 | ACLFilledChecklist ch(Config.accessList.serverPconnForNonretriable, request, nullptr); | |
996 | ch.al = al; | |
997 | ch.syncAle(request, nullptr); | |
998 | retriable = ch.fastCheck().allowed(); | |
41462d93 | 999 | } |
55622953 CT |
1000 | cs->setRetriable(retriable); |
1001 | cs->allowPersistent(pconnRace != raceHappened); | |
1002 | destinations->notificationPending = true; // start() is async | |
1003 | connOpener = cs; | |
855150a4 | 1004 | AsyncJob::Start(cs); |
41462d93 | 1005 | } |
1006 | ||
3dde9e52 CT |
1007 | /// send request on an existing connection dedicated to the requesting client |
1008 | void | |
1009 | FwdState::usePinned() | |
1010 | { | |
3dde9e52 CT |
1011 | const auto connManager = request->pinnedConnection(); |
1012 | debugs(17, 7, "connection manager: " << connManager); | |
1013 | ||
daf80700 CT |
1014 | try { |
1015 | serverConn = ConnStateData::BorrowPinnedConnection(request, al); | |
1016 | debugs(17, 5, "connection: " << serverConn); | |
1017 | } catch (ErrorState * const anErr) { | |
1018 | syncHierNote(nullptr, connManager ? connManager->pinning.host : request->url.host()); | |
3dde9e52 | 1019 | serverConn = nullptr; |
3dde9e52 CT |
1020 | fail(anErr); |
1021 | // Connection managers monitor their idle pinned to-server | |
1022 | // connections and close from-client connections upon seeing | |
1023 | // a to-server connection closure. Retrying here is futile. | |
1024 | stopAndDestroy("pinned connection failure"); | |
1025 | return; | |
1026 | } | |
1027 | ||
3dde9e52 CT |
1028 | ++n_tries; |
1029 | request->flags.pinned = true; | |
1030 | ||
e7d3e24e | 1031 | assert(connManager); |
3dde9e52 CT |
1032 | if (connManager->pinnedAuth()) |
1033 | request->flags.auth = true; | |
1034 | ||
3dde9e52 | 1035 | // the server may close the pinned connection before this request |
55622953 | 1036 | const auto reused = true; |
daf80700 | 1037 | syncWithServerConn(serverConn, connManager->pinning.host, reused); |
55622953 | 1038 | |
3dde9e52 CT |
1039 | dispatch(); |
1040 | } | |
1041 | ||
b6b6f466 | 1042 | void |
1043 | FwdState::dispatch() | |
41462d93 | 1044 | { |
7f06a3d8 | 1045 | debugs(17, 3, clientConn << ": Fetching " << request->method << ' ' << entry->url()); |
e0ebe27c | 1046 | /* |
1047 | * Assert that server_fd is set. This is to guarantee that fwdState | |
1048 | * is attached to something and will be deallocated when server_fd | |
1049 | * is closed. | |
1050 | */ | |
6b679a01 | 1051 | assert(Comm::IsConnOpen(serverConn)); |
62e76326 | 1052 | |
5229395c | 1053 | fd_note(serverConnection()->fd, entry->url()); |
62e76326 | 1054 | |
e8dca475 | 1055 | fd_table[serverConnection()->fd].noteUse(); |
62e76326 | 1056 | |
a7ad6e4e | 1057 | /*assert(!EBIT_TEST(entry->flags, ENTRY_DISPATCHED)); */ |
1058 | assert(entry->ping_status != PING_WAITING); | |
62e76326 | 1059 | |
1bfe9ade | 1060 | assert(entry->locked()); |
62e76326 | 1061 | |
a7ad6e4e | 1062 | EBIT_SET(entry->flags, ENTRY_DISPATCHED); |
62e76326 | 1063 | |
55622953 CT |
1064 | flags.connected_okay = true; |
1065 | ||
5c51bffb | 1066 | netdbPingSite(request->url.host()); |
62e76326 | 1067 | |
425de4c8 | 1068 | /* Retrieves remote server TOS or MARK value, and stores it as part of the |
7172612f | 1069 | * original client request FD object. It is later used to forward |
425de4c8 | 1070 | * remote server's TOS/MARK in the response to the client in case of a MISS. |
7172612f | 1071 | */ |
425de4c8 | 1072 | if (Ip::Qos::TheConfig.isHitNfmarkActive()) { |
b5523edc AJ |
1073 | if (Comm::IsConnOpen(clientConn) && Comm::IsConnOpen(serverConnection())) { |
1074 | fde * clientFde = &fd_table[clientConn->fd]; // XXX: move the fd_table access into Ip::Qos | |
653d9927 | 1075 | /* Get the netfilter CONNMARK */ |
244da4ad | 1076 | clientFde->nfConnmarkFromServer = Ip::Qos::getNfConnmark(serverConnection(), Ip::Qos::dirOpened); |
425de4c8 AJ |
1077 | } |
1078 | } | |
1079 | ||
1080 | #if _SQUID_LINUX_ | |
1081 | /* Bug 2537: The TOS forward part of QOS only applies to patched Linux kernels. */ | |
1082 | if (Ip::Qos::TheConfig.isHitTosActive()) { | |
b5523edc AJ |
1083 | if (Comm::IsConnOpen(clientConn)) { |
1084 | fde * clientFde = &fd_table[clientConn->fd]; // XXX: move the fd_table access into Ip::Qos | |
425de4c8 | 1085 | /* Get the TOS value for the packet */ |
b5523edc | 1086 | Ip::Qos::getTosFromServer(serverConnection(), clientFde); |
7172612f | 1087 | } |
26ac0430 | 1088 | } |
7172612f AJ |
1089 | #endif |
1090 | ||
cb4f4424 | 1091 | #if USE_OPENSSL |
2c065fc8 | 1092 | if (request->flags.sslPeek) { |
d7ce0bcd | 1093 | CallJobHere1(17, 4, request->clientConnectionManager, ConnStateData, |
801cfc26 | 1094 | ConnStateData::httpsPeeked, ConnStateData::PinnedIdleContext(serverConnection(), request)); |
d7ce0bcd AR |
1095 | unregister(serverConn); // async call owns it now |
1096 | complete(); // destroys us | |
1097 | return; | |
061bbdec | 1098 | } |
d7ce0bcd AR |
1099 | #endif |
1100 | ||
f5e17947 CT |
1101 | if (const auto peer = serverConnection()->getPeer()) { |
1102 | ++peer->stats.fetches; | |
1103 | request->prepForPeering(*peer); | |
b6b6f466 | 1104 | httpStart(this); |
41462d93 | 1105 | } else { |
2c065fc8 | 1106 | assert(!request->flags.sslPeek); |
f5e17947 | 1107 | request->prepForDirect(); |
62e76326 | 1108 | |
4e3f4dc7 | 1109 | switch (request->url.getScheme()) { |
62e76326 | 1110 | |
0c3d3f65 | 1111 | case AnyP::PROTO_HTTPS: |
b6b6f466 | 1112 | httpStart(this); |
62e76326 | 1113 | break; |
62e76326 | 1114 | |
0c3d3f65 | 1115 | case AnyP::PROTO_HTTP: |
b6b6f466 | 1116 | httpStart(this); |
62e76326 | 1117 | break; |
1118 | ||
0c3d3f65 | 1119 | case AnyP::PROTO_GOPHER: |
b6b6f466 | 1120 | gopherStart(this); |
62e76326 | 1121 | break; |
1122 | ||
0c3d3f65 | 1123 | case AnyP::PROTO_FTP: |
92ae4c86 | 1124 | if (request->flags.ftpNative) |
5517260a | 1125 | Ftp::StartRelay(this); |
434a79b0 | 1126 | else |
5517260a | 1127 | Ftp::StartGateway(this); |
62e76326 | 1128 | break; |
1129 | ||
39a19cb7 | 1130 | case AnyP::PROTO_CACHE_OBJECT: |
62e76326 | 1131 | |
0c3d3f65 | 1132 | case AnyP::PROTO_URN: |
62e76326 | 1133 | fatal_dump("Should never get here"); |
1134 | break; | |
1135 | ||
0c3d3f65 | 1136 | case AnyP::PROTO_WHOIS: |
b6b6f466 | 1137 | whoisStart(this); |
62e76326 | 1138 | break; |
1139 | ||
f53969cc | 1140 | case AnyP::PROTO_WAIS: /* Not implemented */ |
fc68f6b1 | 1141 | |
62e76326 | 1142 | default: |
7be06178 | 1143 | debugs(17, DBG_IMPORTANT, "WARNING: Cannot retrieve '" << entry->url() << "'."); |
7e6eabbc | 1144 | const auto anErr = new ErrorState(ERR_UNSUP_REQ, Http::scBadRequest, request, al); |
b6b6f466 | 1145 | fail(anErr); |
7be06178 | 1146 | // Set the dont_retry flag because this is not a transient (network) error. |
e857372a | 1147 | flags.dont_retry = true; |
6b679a01 | 1148 | if (Comm::IsConnOpen(serverConn)) { |
00ae51e4 | 1149 | serverConn->close(); |
746beefe | 1150 | } |
62e76326 | 1151 | break; |
1152 | } | |
41462d93 | 1153 | } |
1154 | } | |
1155 | ||
545782b8 | 1156 | /* |
1157 | * FwdState::reforward | |
1158 | * | |
1159 | * returns TRUE if the transaction SHOULD be re-forwarded to the | |
8bbb16e3 | 1160 | * next choice in the serverDestinations list. This method is called when |
d5430dc8 | 1161 | * peer communication completes normally, or experiences |
545782b8 | 1162 | * some error after receiving the end of HTTP headers. |
1163 | */ | |
b6b6f466 | 1164 | int |
1165 | FwdState::reforward() | |
db1cd23c | 1166 | { |
b6b6f466 | 1167 | StoreEntry *e = entry; |
c4a88a3e CT |
1168 | |
1169 | if (EBIT_TEST(e->flags, ENTRY_ABORTED)) { | |
1170 | debugs(17, 3, HERE << "entry aborted"); | |
1171 | return 0; | |
1172 | } | |
1173 | ||
db1cd23c | 1174 | assert(e->store_status == STORE_PENDING); |
1175 | assert(e->mem_obj); | |
bc87dc25 | 1176 | #if URL_CHECKSUM_DEBUG |
62e76326 | 1177 | |
528b2c61 | 1178 | e->mem_obj->checkUrlChecksum(); |
bc87dc25 | 1179 | #endif |
62e76326 | 1180 | |
cfd66529 | 1181 | debugs(17, 3, HERE << e->url() << "?" ); |
62e76326 | 1182 | |
3dde9e52 CT |
1183 | if (request->flags.pinned && !pinnedCanRetry()) { |
1184 | debugs(17, 3, "pinned connection; cannot retry"); | |
1185 | return 0; | |
1186 | } | |
1187 | ||
d6eb18d6 | 1188 | if (!EBIT_TEST(e->flags, ENTRY_FWD_HDR_WAIT)) { |
cfd66529 | 1189 | debugs(17, 3, HERE << "No, ENTRY_FWD_HDR_WAIT isn't set"); |
62e76326 | 1190 | return 0; |
d6eb18d6 | 1191 | } |
62e76326 | 1192 | |
3eebd267 | 1193 | if (exhaustedTries()) |
62e76326 | 1194 | return 0; |
1195 | ||
58217e94 | 1196 | if (request->bodyNibbled()) |
62e76326 | 1197 | return 0; |
1198 | ||
55622953 | 1199 | if (destinations->empty() && !PeerSelectionInitiator::subscribed) { |
cfd66529 | 1200 | debugs(17, 3, HERE << "No alternative forwarding paths left"); |
62e76326 | 1201 | return 0; |
db1cd23c | 1202 | } |
62e76326 | 1203 | |
66d51f4f | 1204 | const auto s = entry->mem().baseReply().sline.status(); |
cfd66529 | 1205 | debugs(17, 3, HERE << "status " << s); |
b6b6f466 | 1206 | return reforwardableStatus(s); |
db1cd23c | 1207 | } |
1208 | ||
b6b6f466 | 1209 | static void |
1210 | fwdStats(StoreEntry * s) | |
64d8034e | 1211 | { |
b6b6f466 | 1212 | int i; |
1213 | int j; | |
1214 | storeAppendPrintf(s, "Status"); | |
62e76326 | 1215 | |
95dc7ff4 FC |
1216 | for (j = 1; j < MAX_FWD_STATS_IDX; ++j) { |
1217 | storeAppendPrintf(s, "\ttry#%d", j); | |
64d8034e | 1218 | } |
64d8034e | 1219 | |
b6b6f466 | 1220 | storeAppendPrintf(s, "\n"); |
0185bd6f | 1221 | |
955394ce | 1222 | for (i = 0; i <= (int) Http::scInvalidHeader; ++i) { |
b6b6f466 | 1223 | if (FwdReplyCodes[0][i] == 0) |
1224 | continue; | |
0185bd6f | 1225 | |
b6b6f466 | 1226 | storeAppendPrintf(s, "%3d", i); |
0185bd6f | 1227 | |
95dc7ff4 | 1228 | for (j = 0; j <= MAX_FWD_STATS_IDX; ++j) { |
b6b6f466 | 1229 | storeAppendPrintf(s, "\t%d", FwdReplyCodes[j][i]); |
62e76326 | 1230 | } |
62e76326 | 1231 | |
b6b6f466 | 1232 | storeAppendPrintf(s, "\n"); |
e0ebe27c | 1233 | } |
7197b20d | 1234 | } |
1235 | ||
b6b6f466 | 1236 | /**** STATIC MEMBER FUNCTIONS *************************************************/ |
db1cd23c | 1237 | |
b6b6f466 | 1238 | bool |
955394ce | 1239 | FwdState::reforwardableStatus(const Http::StatusCode s) const |
db1cd23c | 1240 | { |
b6b6f466 | 1241 | switch (s) { |
62e76326 | 1242 | |
955394ce | 1243 | case Http::scBadGateway: |
62e76326 | 1244 | |
f11c8e2f | 1245 | case Http::scGatewayTimeout: |
b6b6f466 | 1246 | return true; |
62e76326 | 1247 | |
955394ce | 1248 | case Http::scForbidden: |
62e76326 | 1249 | |
955394ce | 1250 | case Http::scInternalServerError: |
62e76326 | 1251 | |
955394ce | 1252 | case Http::scNotImplemented: |
62e76326 | 1253 | |
955394ce | 1254 | case Http::scServiceUnavailable: |
b6b6f466 | 1255 | return Config.retry.onerror; |
62e76326 | 1256 | |
b6b6f466 | 1257 | default: |
1258 | return false; | |
db1cd23c | 1259 | } |
b6b6f466 | 1260 | |
1261 | /* NOTREACHED */ | |
db1cd23c | 1262 | } |
8ddcc35d | 1263 | |
1264 | void | |
b6b6f466 | 1265 | FwdState::initModule() |
8ddcc35d | 1266 | { |
6852be71 | 1267 | RegisterWithCacheManager(); |
8ddcc35d | 1268 | } |
1269 | ||
62ee09ca | 1270 | void |
84f50787 | 1271 | FwdState::RegisterWithCacheManager(void) |
62ee09ca | 1272 | { |
8822ebee | 1273 | Mgr::RegisterAction("forward", "Request Forwarding Statistics", fwdStats, 0, 1); |
62ee09ca | 1274 | } |
1275 | ||
b6b6f466 | 1276 | void |
955394ce | 1277 | FwdState::logReplyStatus(int tries, const Http::StatusCode status) |
8ddcc35d | 1278 | { |
955394ce | 1279 | if (status > Http::scInvalidHeader) |
62e76326 | 1280 | return; |
1281 | ||
75eb730e | 1282 | assert(tries >= 0); |
62e76326 | 1283 | |
8ddcc35d | 1284 | if (tries > MAX_FWD_STATS_IDX) |
62e76326 | 1285 | tries = MAX_FWD_STATS_IDX; |
1286 | ||
95dc7ff4 | 1287 | ++ FwdReplyCodes[tries][status]; |
8ddcc35d | 1288 | } |
1289 | ||
3eebd267 EB |
1290 | bool |
1291 | FwdState::exhaustedTries() const | |
1292 | { | |
1293 | return n_tries >= Config.forward_max_tries; | |
1294 | } | |
1295 | ||
3dde9e52 CT |
1296 | bool |
1297 | FwdState::pinnedCanRetry() const | |
1298 | { | |
1299 | assert(request->flags.pinned); | |
1300 | ||
1301 | // pconn race on pinned connection: Currently we do not have any mechanism | |
1302 | // to retry current pinned connection path. | |
1303 | if (pconnRace == raceHappened) | |
1304 | return false; | |
1305 | ||
1306 | // If a bumped connection was pinned, then the TLS client was given our peer | |
1307 | // details. Do not retry because we do not ensure that those details stay | |
1308 | // constant. Step1-bumped connections do not get our TLS peer details, are | |
1309 | // never pinned, and, hence, never reach this method. | |
1310 | if (request->flags.sslBumped) | |
1311 | return false; | |
1312 | ||
1313 | // The other pinned cases are FTP proxying and connection-based HTTP | |
1314 | // authentication. TODO: Do these cases have restrictions? | |
1315 | return true; | |
1316 | } | |
1317 | ||
f5e17947 CT |
1318 | time_t |
1319 | FwdState::connectingTimeout(const Comm::ConnectionPointer &conn) const | |
1320 | { | |
1321 | const auto connTimeout = conn->connectTimeout(start_t); | |
1322 | return positiveTimeout(connTimeout); | |
1323 | } | |
1324 | ||
b6b6f466 | 1325 | /**** PRIVATE NON-MEMBER FUNCTIONS ********************************************/ |
62e76326 | 1326 | |
057f5854 | 1327 | /* |
1328 | * DPW 2007-05-19 | |
1329 | * Formerly static, but now used by client_side_request.cc | |
1330 | */ | |
425de4c8 AJ |
1331 | /// Checks for a TOS value to apply depending on the ACL |
1332 | tos_t | |
b6b6f466 | 1333 | aclMapTOS(acl_tos * head, ACLChecklist * ch) |
b6a2f15e | 1334 | { |
60019fea | 1335 | for (acl_tos *l = head; l; l = l->next) { |
06bf5384 | 1336 | if (!l->aclList || ch->fastCheck(l->aclList).allowed()) |
b6b6f466 | 1337 | return l->tos; |
1338 | } | |
5894ad28 | 1339 | |
b6b6f466 | 1340 | return 0; |
1341 | } | |
5894ad28 | 1342 | |
425de4c8 | 1343 | /// Checks for a netfilter mark value to apply depending on the ACL |
244da4ad AG |
1344 | Ip::NfMarkConfig |
1345 | aclFindNfMarkConfig(acl_nfmark * head, ACLChecklist * ch) | |
425de4c8 | 1346 | { |
60019fea | 1347 | for (acl_nfmark *l = head; l; l = l->next) { |
06bf5384 | 1348 | if (!l->aclList || ch->fastCheck(l->aclList).allowed()) |
244da4ad | 1349 | return l->markConfig; |
425de4c8 AJ |
1350 | } |
1351 | ||
244da4ad | 1352 | return {}; |
425de4c8 AJ |
1353 | } |
1354 | ||
cfd66529 | 1355 | void |
7d74b4b8 | 1356 | getOutgoingAddress(HttpRequest * request, const Comm::ConnectionPointer &conn) |
b6b6f466 | 1357 | { |
07f889c1 | 1358 | // skip if an outgoing address is already set. |
4dd643d5 | 1359 | if (!conn->local.isAnyAddr()) return; |
cfd66529 | 1360 | |
07f889c1 | 1361 | // ensure that at minimum the wildcard local matches remote protocol |
4dd643d5 AJ |
1362 | if (conn->remote.isIPv4()) |
1363 | conn->local.setIPv4(); | |
07f889c1 | 1364 | |
cfd66529 | 1365 | // maybe use TPROXY client address |
450fe1cb | 1366 | if (request && request->flags.spoofClientIp) { |
739b352a | 1367 | if (!conn->getPeer() || !conn->getPeer()->options.no_tproxy) { |
96d64448 AJ |
1368 | #if FOLLOW_X_FORWARDED_FOR && LINUX_NETFILTER |
1369 | if (Config.onoff.tproxy_uses_indirect_client) | |
45906573 | 1370 | conn->local = request->indirect_client_addr; |
96d64448 AJ |
1371 | else |
1372 | #endif | |
45906573 | 1373 | conn->local = request->client_addr; |
3b659606 | 1374 | conn->local.port(0); // let OS pick the source port to prevent address clashes |
cfd66529 AJ |
1375 | // some flags need setting on the socket to use this address |
1376 | conn->flags |= COMM_DOBIND; | |
1377 | conn->flags |= COMM_TRANSPARENT; | |
1378 | return; | |
1379 | } | |
b0758e04 AJ |
1380 | // else no tproxy today ... |
1381 | } | |
c303f6e3 | 1382 | |
b50e327b | 1383 | if (!Config.accessList.outgoing_address) { |
cfd66529 | 1384 | return; // anything will do. |
b50e327b AJ |
1385 | } |
1386 | ||
c0941a6a | 1387 | ACLFilledChecklist ch(NULL, request, NULL); |
1b091aec | 1388 | ch.dst_peer_name = conn->getPeer() ? conn->getPeer()->name : NULL; |
cfd66529 AJ |
1389 | ch.dst_addr = conn->remote; |
1390 | ||
1391 | // TODO use the connection details in ACL. | |
1392 | // needs a bit of rework in ACLFilledChecklist to use Comm::Connection instead of ConnStateData | |
6db78a1a | 1393 | |
289848ca | 1394 | for (Acl::Address *l = Config.accessList.outgoing_address; l; l = l->next) { |
cfd66529 AJ |
1395 | |
1396 | /* check if the outgoing address is usable to the destination */ | |
4dd643d5 | 1397 | if (conn->remote.isIPv4() != l->addr.isIPv4()) continue; |
cfd66529 AJ |
1398 | |
1399 | /* check ACLs for this outgoing address */ | |
06bf5384 | 1400 | if (!l->aclList || ch.fastCheck(l->aclList).allowed()) { |
cfd66529 AJ |
1401 | conn->local = l->addr; |
1402 | return; | |
1403 | } | |
1404 | } | |
b6b6f466 | 1405 | } |
62e76326 | 1406 | |
55622953 CT |
1407 | /// \returns the TOS value that should be set on the to-peer connection |
1408 | static tos_t | |
1409 | GetTosToServer(HttpRequest * request, Comm::Connection &conn) | |
425de4c8 | 1410 | { |
55622953 CT |
1411 | if (!Ip::Qos::TheConfig.tosToServer) |
1412 | return 0; | |
1413 | ||
425de4c8 | 1414 | ACLFilledChecklist ch(NULL, request, NULL); |
55622953 CT |
1415 | ch.dst_peer_name = conn.getPeer() ? conn.getPeer()->name : nullptr; |
1416 | ch.dst_addr = conn.remote; | |
425de4c8 AJ |
1417 | return aclMapTOS(Ip::Qos::TheConfig.tosToServer, &ch); |
1418 | } | |
1419 | ||
55622953 CT |
1420 | /// \returns the Netfilter mark that should be set on the to-peer connection |
1421 | static nfmark_t | |
1422 | GetNfmarkToServer(HttpRequest * request, Comm::Connection &conn) | |
b6b6f466 | 1423 | { |
55622953 CT |
1424 | if (!Ip::Qos::TheConfig.nfmarkToServer) |
1425 | return 0; | |
1426 | ||
c0941a6a | 1427 | ACLFilledChecklist ch(NULL, request, NULL); |
55622953 CT |
1428 | ch.dst_peer_name = conn.getPeer() ? conn.getPeer()->name : nullptr; |
1429 | ch.dst_addr = conn.remote; | |
244da4ad AG |
1430 | const auto mc = aclFindNfMarkConfig(Ip::Qos::TheConfig.nfmarkToServer, &ch); |
1431 | return mc.mark; | |
b6a2f15e | 1432 | } |
6ee88490 CT |
1433 | |
1434 | void | |
1435 | GetMarkingsToServer(HttpRequest * request, Comm::Connection &conn) | |
1436 | { | |
1437 | // Get the server side TOS and Netfilter mark to be set on the connection. | |
55622953 CT |
1438 | conn.tos = GetTosToServer(request, conn); |
1439 | conn.nfmark = GetNfmarkToServer(request, conn); | |
1440 | debugs(17, 3, "from " << conn.local << " tos " << int(conn.tos) << " netfilter mark " << conn.nfmark); | |
1441 | } | |
6ee88490 | 1442 | |
55622953 CT |
1443 | void |
1444 | ResetMarkingsToServer(HttpRequest * request, Comm::Connection &conn) | |
1445 | { | |
1446 | GetMarkingsToServer(request, conn); | |
1447 | ||
1448 | // TODO: Avoid these calls if markings has not changed. | |
1449 | if (conn.tos) | |
1450 | Ip::Qos::setSockTos(&conn, conn.tos); | |
1451 | if (conn.nfmark) | |
1452 | Ip::Qos::setSockNfmark(&conn, conn.nfmark); | |
6ee88490 | 1453 | } |
f53969cc | 1454 |