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30a4f2a8 | 1 | /* |
4ac4a490 | 2 | * Copyright (C) 1996-2017 The Squid Software Foundation and contributors |
30a4f2a8 | 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. | |
30a4f2a8 | 7 | */ |
019dd986 | 8 | |
bbc27441 AJ |
9 | /* DEBUG: section 11 Hypertext Transfer Protocol (HTTP) */ |
10 | ||
4a83b852 | 11 | /* |
12 | * Anonymizing patch by lutz@as-node.jena.thur.de | |
de3bdb4c | 13 | * have a look into http-anon.c to get more informations. |
4a83b852 | 14 | */ |
15 | ||
582c2af2 | 16 | #include "squid.h" |
9ca29d23 | 17 | #include "acl/FilledChecklist.h" |
655daa06 | 18 | #include "base/AsyncJobCalls.h" |
3d93a84d | 19 | #include "base/TextException.h" |
602d9612 | 20 | #include "base64.h" |
a011edee | 21 | #include "CachePeer.h" |
582c2af2 | 22 | #include "client_side.h" |
8d71285d | 23 | #include "comm/Connection.h" |
395a814a | 24 | #include "comm/Read.h" |
ec41b64c | 25 | #include "comm/Write.h" |
d4a083cc | 26 | #include "CommRead.h" |
8b997339 | 27 | #include "err_detail_type.h" |
aa839030 | 28 | #include "errorpage.h" |
fc54b8d2 | 29 | #include "fd.h" |
85bef0a7 | 30 | #include "fde.h" |
67679543 | 31 | #include "globals.h" |
582c2af2 | 32 | #include "http.h" |
f542211b | 33 | #include "http/one/ResponseParser.h" |
db1720f8 | 34 | #include "http/one/TeChunkedParser.h" |
d3dddfb5 | 35 | #include "http/Stream.h" |
602d9612 | 36 | #include "HttpControlMsg.h" |
7ebe76de | 37 | #include "HttpHdrCc.h" |
582c2af2 | 38 | #include "HttpHdrContRange.h" |
b19dd748 | 39 | #include "HttpHdrSc.h" |
40 | #include "HttpHdrScTarget.h" | |
fc54b8d2 | 41 | #include "HttpHeaderTools.h" |
9ca29d23 AJ |
42 | #include "HttpReply.h" |
43 | #include "HttpRequest.h" | |
fc54b8d2 | 44 | #include "log/access_log.h" |
9ca29d23 AJ |
45 | #include "MemBuf.h" |
46 | #include "MemObject.h" | |
fc54b8d2 | 47 | #include "neighbors.h" |
6ff204fc | 48 | #include "peer_proxy_negotiate_auth.h" |
582c2af2 | 49 | #include "profiler/Profiler.h" |
fc54b8d2 | 50 | #include "refresh.h" |
8d9a8184 | 51 | #include "RefreshPattern.h" |
1fa9b1a7 | 52 | #include "rfc1738.h" |
4d5904f7 | 53 | #include "SquidConfig.h" |
985c86bc | 54 | #include "SquidTime.h" |
e4f1fdae | 55 | #include "StatCounters.h" |
9ca29d23 | 56 | #include "Store.h" |
28204b3b | 57 | #include "StrList.h" |
fc54b8d2 FC |
58 | #include "tools.h" |
59 | #include "URL.h" | |
ed6e9fb9 | 60 | #include "util.h" |
af0bb8e5 | 61 | |
582c2af2 FC |
62 | #if USE_AUTH |
63 | #include "auth/UserRequest.h" | |
64 | #endif | |
65 | #if USE_DELAY_POOLS | |
66 | #include "DelayPools.h" | |
67 | #endif | |
9ca29d23 | 68 | |
af0bb8e5 | 69 | #define SQUID_ENTER_THROWING_CODE() try { |
70 | #define SQUID_EXIT_THROWING_CODE(status) \ | |
f53969cc | 71 | status = true; \ |
af0bb8e5 | 72 | } \ |
0a8bbeeb | 73 | catch (const std::exception &e) { \ |
f53969cc SM |
74 | debugs (11, 1, "Exception error:" << e.what()); \ |
75 | status = false; \ | |
9e008dda | 76 | } |
e6ccf245 | 77 | |
2afaba07 | 78 | CBDATA_CLASS_INIT(HttpStateData); |
090089c4 | 79 | |
6bf8443a | 80 | static const char *const crlf = "\r\n"; |
4db43fab | 81 | |
955394ce | 82 | static void httpMaybeRemovePublic(StoreEntry *, Http::StatusCode); |
e24f13cd | 83 | static void copyOneHeaderFromClientsideRequestToUpstreamRequest(const HttpHeaderEntry *e, const String strConnection, const HttpRequest * request, |
bad9c5e4 | 84 | HttpHeader * hdr_out, const int we_do_ranges, const Http::StateFlags &); |
528b2c61 | 85 | |
8e100780 | 86 | HttpStateData::HttpStateData(FwdState *theFwdState) : |
1810a0cb SM |
87 | AsyncJob("HttpStateData"), |
88 | Client(theFwdState), | |
89 | lastChunk(0), | |
90 | httpChunkDecoder(NULL), | |
91 | payloadSeen(0), | |
eace013e EB |
92 | payloadTruncated(0), |
93 | sawDateGoBack(false) | |
2bb867b5 | 94 | { |
95 | debugs(11,5,HERE << "HttpStateData " << this << " created"); | |
a3d50c30 | 96 | ignoreCacheControl = false; |
97 | surrogateNoStore = false; | |
8d71285d | 98 | serverConnection = fwd->serverConnection(); |
a3d50c30 | 99 | |
3ff65596 | 100 | // reset peer response time stats for %<pt |
e24f13cd CT |
101 | request->hier.peer_http_request_sent.tv_sec = 0; |
102 | request->hier.peer_http_request_sent.tv_usec = 0; | |
3ff65596 | 103 | |
5229395c AJ |
104 | if (fwd->serverConnection() != NULL) |
105 | _peer = cbdataReference(fwd->serverConnection()->getPeer()); /* might be NULL */ | |
a3d50c30 | 106 | |
107 | if (_peer) { | |
e857372a | 108 | request->flags.proxying = true; |
a3d50c30 | 109 | /* |
110 | * This NEIGHBOR_PROXY_ONLY check probably shouldn't be here. | |
111 | * We might end up getting the object from somewhere else if, | |
112 | * for example, the request to this neighbor fails. | |
113 | */ | |
114 | if (_peer->options.proxy_only) | |
d88e3c49 | 115 | entry->releaseRequest(); |
a3d50c30 | 116 | |
9a0a18de | 117 | #if USE_DELAY_POOLS |
a3d50c30 | 118 | entry->setNoDelay(_peer->options.no_delay); |
a3d50c30 | 119 | #endif |
a3d50c30 | 120 | } |
121 | ||
122 | /* | |
123 | * register the handler to free HTTP state data when the FD closes | |
124 | */ | |
dc56a9b1 | 125 | typedef CommCbMemFunT<HttpStateData, CommCloseCbParams> Dialer; |
d1c7f781 | 126 | closeHandler = JobCallback(9, 5, Dialer, this, HttpStateData::httpStateConnClosed); |
8d71285d | 127 | comm_add_close_handler(serverConnection->fd, closeHandler); |
2bb867b5 | 128 | } |
b8d8561b | 129 | |
2afaba07 | 130 | HttpStateData::~HttpStateData() |
f5558c95 | 131 | { |
253caccb | 132 | /* |
fccd4a86 | 133 | * don't forget that ~Client() gets called automatically |
253caccb | 134 | */ |
135 | ||
9e008dda AJ |
136 | if (httpChunkDecoder) |
137 | delete httpChunkDecoder; | |
af0bb8e5 | 138 | |
5229395c AJ |
139 | cbdataReferenceDone(_peer); |
140 | ||
9cf7de1b | 141 | debugs(11,5, HERE << "HttpStateData " << this << " destroyed; " << serverConnection); |
5f8252d2 | 142 | } |
143 | ||
6b679a01 | 144 | const Comm::ConnectionPointer & |
e83cc785 | 145 | HttpStateData::dataConnection() const |
fc68f6b1 | 146 | { |
6b679a01 | 147 | return serverConnection; |
2afaba07 | 148 | } |
8d71285d | 149 | |
9e008dda | 150 | void |
dc56a9b1 | 151 | HttpStateData::httpStateConnClosed(const CommCloseCbParams ¶ms) |
152 | { | |
153 | debugs(11, 5, "httpStateFree: FD " << params.fd << ", httpState=" << params.data); | |
70df76e3 | 154 | doneWithFwd = "httpStateConnClosed()"; // assume FwdState is monitoring too |
79628299 | 155 | mustStop("HttpStateData::httpStateConnClosed"); |
f5558c95 | 156 | } |
157 | ||
dc56a9b1 | 158 | void |
ced8def3 | 159 | HttpStateData::httpTimeout(const CommTimeoutCbParams &) |
090089c4 | 160 | { |
ced8def3 | 161 | debugs(11, 4, serverConnection << ": '" << entry->url() << "'"); |
62e76326 | 162 | |
12158bdc | 163 | if (entry->store_status == STORE_PENDING) { |
f11c8e2f | 164 | fwd->fail(new ErrorState(ERR_READ_TIMEOUT, Http::scGatewayTimeout, fwd->request)); |
9b312a19 | 165 | } |
62e76326 | 166 | |
398bc066 CT |
167 | closeServer(); |
168 | mustStop("HttpStateData::httpTimeout"); | |
090089c4 | 169 | } |
170 | ||
eace013e EB |
171 | static StoreEntry * |
172 | findPreviouslyCachedEntry(StoreEntry *newEntry) { | |
173 | assert(newEntry->mem_obj); | |
174 | return newEntry->mem_obj->request ? | |
c43405e7 | 175 | storeGetPublicByRequest(newEntry->mem_obj->request.getRaw()) : |
eace013e EB |
176 | storeGetPublic(newEntry->mem_obj->storeId(), newEntry->mem_obj->method); |
177 | } | |
178 | ||
09f0985d AR |
179 | /// Remove an existing public store entry if the incoming response (to be |
180 | /// stored in a currently private entry) is going to invalidate it. | |
f9cece6e | 181 | static void |
955394ce | 182 | httpMaybeRemovePublic(StoreEntry * e, Http::StatusCode status) |
f9cece6e | 183 | { |
914b89a2 | 184 | int remove = 0; |
7e3ce7b9 | 185 | int forbidden = 0; |
62e76326 | 186 | |
09f0985d AR |
187 | // If the incoming response already goes into a public entry, then there is |
188 | // nothing to remove. This protects ready-for-collapsing entries as well. | |
d46a87a8 | 189 | if (!EBIT_TEST(e->flags, KEY_PRIVATE)) |
62e76326 | 190 | return; |
3140dc6a GD |
191 | |
192 | // If the new/incoming response cannot be stored, then it does not | |
193 | // compete with the old stored response for the public key, and the | |
194 | // old stored response should be left as is. | |
195 | if (e->mem_obj->request && !e->mem_obj->request->flags.cachable) | |
196 | return; | |
62e76326 | 197 | |
f9cece6e | 198 | switch (status) { |
62e76326 | 199 | |
955394ce | 200 | case Http::scOkay: |
62e76326 | 201 | |
955394ce | 202 | case Http::scNonAuthoritativeInformation: |
62e76326 | 203 | |
955394ce | 204 | case Http::scMultipleChoices: |
62e76326 | 205 | |
955394ce | 206 | case Http::scMovedPermanently: |
62e76326 | 207 | |
f11c8e2f | 208 | case Http::scFound: |
62e76326 | 209 | |
5613c60d GD |
210 | case Http::scSeeOther: |
211 | ||
955394ce | 212 | case Http::scGone: |
62e76326 | 213 | |
955394ce | 214 | case Http::scNotFound: |
914b89a2 | 215 | remove = 1; |
62e76326 | 216 | |
217 | break; | |
218 | ||
955394ce | 219 | case Http::scForbidden: |
62e76326 | 220 | |
955394ce | 221 | case Http::scMethodNotAllowed: |
62e76326 | 222 | forbidden = 1; |
223 | ||
224 | break; | |
225 | ||
f9cece6e | 226 | #if WORK_IN_PROGRESS |
62e76326 | 227 | |
955394ce | 228 | case Http::scUnauthorized: |
62e76326 | 229 | forbidden = 1; |
230 | ||
231 | break; | |
232 | ||
f9cece6e | 233 | #endif |
62e76326 | 234 | |
f9cece6e | 235 | default: |
7e3ce7b9 | 236 | #if QUESTIONABLE |
62e76326 | 237 | /* |
238 | * Any 2xx response should eject previously cached entities... | |
239 | */ | |
abb929f0 | 240 | |
62e76326 | 241 | if (status >= 200 && status < 300) |
914b89a2 | 242 | remove = 1; |
62e76326 | 243 | |
7e3ce7b9 | 244 | #endif |
62e76326 | 245 | |
246 | break; | |
f9cece6e | 247 | } |
62e76326 | 248 | |
914b89a2 | 249 | if (!remove && !forbidden) |
62e76326 | 250 | return; |
251 | ||
eace013e | 252 | StoreEntry *pe = findPreviouslyCachedEntry(e); |
62e76326 | 253 | |
f66a9ef4 | 254 | if (pe != NULL) { |
62e76326 | 255 | assert(e != pe); |
d9129474 | 256 | #if USE_HTCP |
c43405e7 | 257 | neighborsHtcpClear(e, nullptr, e->mem_obj->request.getRaw(), e->mem_obj->method, HTCP_CLR_INVALIDATION); |
d9129474 | 258 | #endif |
5f33b71d | 259 | pe->release(); |
0856d155 | 260 | } |
62e76326 | 261 | |
914b89a2 | 262 | /** \par |
7e3ce7b9 | 263 | * Also remove any cached HEAD response in case the object has |
264 | * changed. | |
265 | */ | |
f66a9ef4 | 266 | if (e->mem_obj->request) |
c43405e7 | 267 | pe = storeGetPublicByRequestMethod(e->mem_obj->request.getRaw(), Http::METHOD_HEAD); |
f66a9ef4 | 268 | else |
c877c0bc | 269 | pe = storeGetPublic(e->mem_obj->storeId(), Http::METHOD_HEAD); |
62e76326 | 270 | |
f66a9ef4 | 271 | if (pe != NULL) { |
62e76326 | 272 | assert(e != pe); |
d9129474 | 273 | #if USE_HTCP |
c43405e7 | 274 | neighborsHtcpClear(e, nullptr, e->mem_obj->request.getRaw(), HttpRequestMethod(Http::METHOD_HEAD), HTCP_CLR_INVALIDATION); |
d9129474 | 275 | #endif |
5f33b71d | 276 | pe->release(); |
7e3ce7b9 | 277 | } |
f9cece6e | 278 | } |
279 | ||
43ae1d95 | 280 | void |
281 | HttpStateData::processSurrogateControl(HttpReply *reply) | |
282 | { | |
45e5102d | 283 | if (request->flags.accelerated && reply->surrogate_control) { |
45a58345 | 284 | HttpHdrScTarget *sctusable = reply->surrogate_control->getMergedTarget(Config.Accel.surrogate_id); |
43ae1d95 | 285 | |
286 | if (sctusable) { | |
45a58345 | 287 | if (sctusable->noStore() || |
43ae1d95 | 288 | (Config.onoff.surrogate_is_remote |
45a58345 | 289 | && sctusable->noStoreRemote())) { |
43ae1d95 | 290 | surrogateNoStore = true; |
5ed72359 | 291 | entry->makePrivate(); |
43ae1d95 | 292 | } |
293 | ||
294 | /* The HttpHeader logic cannot tell if the header it's parsing is a reply to an | |
295 | * accelerated request or not... | |
45cca89d | 296 | * Still, this is an abstraction breach. - RC |
43ae1d95 | 297 | */ |
45a58345 FC |
298 | if (sctusable->hasMaxAge()) { |
299 | if (sctusable->maxAge() < sctusable->maxStale()) | |
300 | reply->expires = reply->date + sctusable->maxAge(); | |
43ae1d95 | 301 | else |
45a58345 | 302 | reply->expires = reply->date + sctusable->maxStale(); |
43ae1d95 | 303 | |
304 | /* And update the timestamps */ | |
3900307b | 305 | entry->timestampsSet(); |
43ae1d95 | 306 | } |
307 | ||
308 | /* We ignore cache-control directives as per the Surrogate specification */ | |
309 | ignoreCacheControl = true; | |
310 | ||
45a58345 | 311 | delete sctusable; |
43ae1d95 | 312 | } |
313 | } | |
43ae1d95 | 314 | } |
315 | ||
924f73bc | 316 | int |
317 | HttpStateData::cacheableReply() | |
c54e9052 | 318 | { |
585ab260 | 319 | HttpReply const *rep = finalReply(); |
528b2c61 | 320 | HttpHeader const *hdr = &rep->header; |
c68e9c6b | 321 | const char *v; |
626096be | 322 | #if USE_HTTP_VIOLATIONS |
62e76326 | 323 | |
8d9a8184 | 324 | const RefreshPattern *R = NULL; |
b6445726 | 325 | |
346be6ad | 326 | /* This strange looking define first looks up the refresh pattern |
b6445726 | 327 | * and then checks if the specified flag is set. The main purpose |
626096be | 328 | * of this is to simplify the refresh pattern lookup and USE_HTTP_VIOLATIONS |
b6445726 | 329 | * condition |
330 | */ | |
331 | #define REFRESH_OVERRIDE(flag) \ | |
c877c0bc | 332 | ((R = (R ? R : refreshLimits(entry->mem_obj->storeId()))) , \ |
5f8252d2 | 333 | (R && R->flags.flag)) |
b445957e | 334 | #else |
335 | #define REFRESH_OVERRIDE(flag) 0 | |
38f9c547 | 336 | #endif |
43ae1d95 | 337 | |
6919be24 AR |
338 | if (EBIT_TEST(entry->flags, RELEASE_REQUEST)) { |
339 | debugs(22, 3, "NO because " << *entry << " has been released."); | |
340 | return 0; | |
341 | } | |
342 | ||
eace013e EB |
343 | // RFC 7234 section 4: a cache MUST use the most recent response |
344 | // (as determined by the Date header field) | |
345 | if (sawDateGoBack) { | |
346 | debugs(22, 3, "NO because " << *entry << " has an older date header."); | |
347 | return 0; | |
348 | } | |
349 | ||
2b59002c AJ |
350 | // Check for Surrogate/1.0 protocol conditions |
351 | // NP: reverse-proxy traffic our parent server has instructed us never to cache | |
352 | if (surrogateNoStore) { | |
353 | debugs(22, 3, HERE << "NO because Surrogate-Control:no-store"); | |
62e76326 | 354 | return 0; |
2b59002c | 355 | } |
62e76326 | 356 | |
2b59002c AJ |
357 | // RFC 2616: HTTP/1.1 Cache-Control conditions |
358 | if (!ignoreCacheControl) { | |
359 | // XXX: check to see if the request headers alone were enough to prevent caching earlier | |
360 | // (ie no-store request header) no need to check those all again here if so. | |
361 | // for now we are not reliably doing that so we waste CPU re-checking request CC | |
8466a4af | 362 | |
2b59002c AJ |
363 | // RFC 2616 section 14.9.2 - MUST NOT cache any response with request CC:no-store |
364 | if (request && request->cache_control && request->cache_control->noStore() && | |
365 | !REFRESH_OVERRIDE(ignore_no_store)) { | |
366 | debugs(22, 3, HERE << "NO because client request Cache-Control:no-store"); | |
367 | return 0; | |
38f9c547 | 368 | } |
369 | ||
2b59002c | 370 | // NP: request CC:no-cache only means cache READ is forbidden. STORE is permitted. |
b38b26cb | 371 | if (rep->cache_control && rep->cache_control->hasNoCache() && rep->cache_control->noCache().size() > 0) { |
1259f9cf AJ |
372 | /* TODO: we are allowed to cache when no-cache= has parameters. |
373 | * Provided we strip away any of the listed headers unless they are revalidated | |
374 | * successfully (ie, must revalidate AND these headers are prohibited on stale replies). | |
375 | * That is a bit tricky for squid right now so we avoid caching entirely. | |
376 | */ | |
377 | debugs(22, 3, HERE << "NO because server reply Cache-Control:no-cache has parameters"); | |
378 | return 0; | |
379 | } | |
380 | ||
2b59002c AJ |
381 | // NP: request CC:private is undefined. We ignore. |
382 | // NP: other request CC flags are limiters on HIT/MISS. We don't care about here. | |
383 | ||
384 | // RFC 2616 section 14.9.2 - MUST NOT cache any response with CC:no-store | |
385 | if (rep->cache_control && rep->cache_control->noStore() && | |
386 | !REFRESH_OVERRIDE(ignore_no_store)) { | |
387 | debugs(22, 3, HERE << "NO because server reply Cache-Control:no-store"); | |
388 | return 0; | |
38f9c547 | 389 | } |
390 | ||
2b59002c | 391 | // RFC 2616 section 14.9.1 - MUST NOT cache any response with CC:private in a shared cache like Squid. |
1259f9cf | 392 | // CC:private overrides CC:public when both are present in a response. |
2b59002c AJ |
393 | // TODO: add a shared/private cache configuration possibility. |
394 | if (rep->cache_control && | |
1259f9cf | 395 | rep->cache_control->hasPrivate() && |
2b59002c | 396 | !REFRESH_OVERRIDE(ignore_private)) { |
1259f9cf AJ |
397 | /* TODO: we are allowed to cache when private= has parameters. |
398 | * Provided we strip away any of the listed headers unless they are revalidated | |
399 | * successfully (ie, must revalidate AND these headers are prohibited on stale replies). | |
400 | * That is a bit tricky for squid right now so we avoid caching entirely. | |
401 | */ | |
2b59002c AJ |
402 | debugs(22, 3, HERE << "NO because server reply Cache-Control:private"); |
403 | return 0; | |
38f9c547 | 404 | } |
2b59002c | 405 | } |
1259f9cf | 406 | |
2b59002c AJ |
407 | // RFC 2068, sec 14.9.4 - MUST NOT cache any response with Authentication UNLESS certain CC controls are present |
408 | // allow HTTP violations to IGNORE those controls (ie re-block caching Auth) | |
d94cbaa8 | 409 | if (request && (request->flags.auth || request->flags.authSent)) { |
2b59002c AJ |
410 | if (!rep->cache_control) { |
411 | debugs(22, 3, HERE << "NO because Authenticated and server reply missing Cache-Control"); | |
412 | return 0; | |
413 | } | |
62e76326 | 414 | |
2b59002c AJ |
415 | if (ignoreCacheControl) { |
416 | debugs(22, 3, HERE << "NO because Authenticated and ignoring Cache-Control"); | |
417 | return 0; | |
38f9c547 | 418 | } |
62e76326 | 419 | |
2b59002c | 420 | bool mayStore = false; |
8f9343d0 | 421 | // HTTPbis pt6 section 3.2: a response CC:public is present |
2b59002c AJ |
422 | if (rep->cache_control->Public()) { |
423 | debugs(22, 3, HERE << "Authenticated but server reply Cache-Control:public"); | |
424 | mayStore = true; | |
425 | ||
8f9343d0 | 426 | // HTTPbis pt6 section 3.2: a response CC:must-revalidate is present |
064679ea | 427 | } else if (rep->cache_control->mustRevalidate()) { |
d94cbaa8 | 428 | debugs(22, 3, HERE << "Authenticated but server reply Cache-Control:must-revalidate"); |
2b59002c AJ |
429 | mayStore = true; |
430 | ||
8f9343d0 | 431 | #if USE_HTTP_VIOLATIONS |
2b59002c | 432 | // NP: given the must-revalidate exception we should also be able to exempt no-cache. |
8f9343d0 AJ |
433 | // HTTPbis WG verdict on this is that it is omitted from the spec due to being 'unexpected' by |
434 | // some. The caching+revalidate is not exactly unsafe though with Squids interpretation of no-cache | |
1259f9cf | 435 | // (without parameters) as equivalent to must-revalidate in the reply. |
064679ea | 436 | } else if (rep->cache_control->hasNoCache() && rep->cache_control->noCache().size() == 0) { |
8f9343d0 | 437 | debugs(22, 3, HERE << "Authenticated but server reply Cache-Control:no-cache (equivalent to must-revalidate)"); |
2b59002c AJ |
438 | mayStore = true; |
439 | #endif | |
440 | ||
8f9343d0 | 441 | // HTTPbis pt6 section 3.2: a response CC:s-maxage is present |
2b59002c | 442 | } else if (rep->cache_control->sMaxAge()) { |
908ac81e | 443 | debugs(22, 3, HERE << "Authenticated but server reply Cache-Control:s-maxage"); |
2b59002c AJ |
444 | mayStore = true; |
445 | } | |
62e76326 | 446 | |
2b59002c AJ |
447 | if (!mayStore) { |
448 | debugs(22, 3, HERE << "NO because Authenticated transaction"); | |
449 | return 0; | |
38f9c547 | 450 | } |
2b59002c AJ |
451 | |
452 | // NP: response CC:no-cache is equivalent to CC:must-revalidate,max-age=0. We MAY cache, and do so. | |
453 | // NP: other request CC flags are limiters on HIT/MISS/REFRESH. We don't care about here. | |
c68e9c6b | 454 | } |
62e76326 | 455 | |
2b59002c | 456 | /* HACK: The "multipart/x-mixed-replace" content type is used for |
c68e9c6b | 457 | * continuous push replies. These are generally dynamic and |
458 | * probably should not be cachable | |
459 | */ | |
789217a2 | 460 | if ((v = hdr->getStr(Http::HdrType::CONTENT_TYPE))) |
2b59002c AJ |
461 | if (!strncasecmp(v, "multipart/x-mixed-replace", 25)) { |
462 | debugs(22, 3, HERE << "NO because Content-Type:multipart/x-mixed-replace"); | |
62e76326 | 463 | return 0; |
2b59002c | 464 | } |
62e76326 | 465 | |
9b769c67 | 466 | switch (rep->sline.status()) { |
f53969cc | 467 | /* Responses that are cacheable */ |
62e76326 | 468 | |
955394ce | 469 | case Http::scOkay: |
62e76326 | 470 | |
955394ce | 471 | case Http::scNonAuthoritativeInformation: |
62e76326 | 472 | |
955394ce | 473 | case Http::scMultipleChoices: |
62e76326 | 474 | |
955394ce AJ |
475 | case Http::scMovedPermanently: |
476 | case Http::scPermanentRedirect: | |
62e76326 | 477 | |
955394ce | 478 | case Http::scGone: |
62e76326 | 479 | /* |
480 | * Don't cache objects that need to be refreshed on next request, | |
481 | * unless we know how to refresh it. | |
482 | */ | |
483 | ||
3d8b6ba4 | 484 | if (!refreshIsCachable(entry) && !REFRESH_OVERRIDE(store_stale)) { |
2b59002c | 485 | debugs(22, 3, "NO because refreshIsCachable() returned non-cacheable.."); |
62e76326 | 486 | return 0; |
2b59002c | 487 | } else { |
9b769c67 | 488 | debugs(22, 3, HERE << "YES because HTTP status " << rep->sline.status()); |
62e76326 | 489 | return 1; |
2b59002c | 490 | } |
62e76326 | 491 | /* NOTREACHED */ |
492 | break; | |
493 | ||
f53969cc | 494 | /* Responses that only are cacheable if the server says so */ |
62e76326 | 495 | |
f11c8e2f | 496 | case Http::scFound: |
955394ce | 497 | case Http::scTemporaryRedirect: |
2b59002c | 498 | if (rep->date <= 0) { |
9b769c67 | 499 | debugs(22, 3, HERE << "NO because HTTP status " << rep->sline.status() << " and Date missing/invalid"); |
2b59002c AJ |
500 | return 0; |
501 | } | |
502 | if (rep->expires > rep->date) { | |
9b769c67 | 503 | debugs(22, 3, HERE << "YES because HTTP status " << rep->sline.status() << " and Expires > Date"); |
62e76326 | 504 | return 1; |
2b59002c | 505 | } else { |
9b769c67 | 506 | debugs(22, 3, HERE << "NO because HTTP status " << rep->sline.status() << " and Expires <= Date"); |
62e76326 | 507 | return 0; |
2b59002c | 508 | } |
62e76326 | 509 | /* NOTREACHED */ |
510 | break; | |
511 | ||
f53969cc | 512 | /* Errors can be negatively cached */ |
62e76326 | 513 | |
955394ce | 514 | case Http::scNoContent: |
62e76326 | 515 | |
955394ce | 516 | case Http::scUseProxy: |
62e76326 | 517 | |
955394ce | 518 | case Http::scBadRequest: |
62e76326 | 519 | |
955394ce | 520 | case Http::scForbidden: |
62e76326 | 521 | |
955394ce | 522 | case Http::scNotFound: |
62e76326 | 523 | |
955394ce | 524 | case Http::scMethodNotAllowed: |
62e76326 | 525 | |
f11c8e2f | 526 | case Http::scUriTooLong: |
62e76326 | 527 | |
955394ce | 528 | case Http::scInternalServerError: |
62e76326 | 529 | |
955394ce | 530 | case Http::scNotImplemented: |
62e76326 | 531 | |
955394ce | 532 | case Http::scBadGateway: |
62e76326 | 533 | |
955394ce | 534 | case Http::scServiceUnavailable: |
62e76326 | 535 | |
f11c8e2f | 536 | case Http::scGatewayTimeout: |
fe3f8977 AJ |
537 | case Http::scMisdirectedRequest: |
538 | ||
f11c8e2f | 539 | debugs(22, 3, "MAYBE because HTTP status " << rep->sline.status()); |
62e76326 | 540 | return -1; |
541 | ||
542 | /* NOTREACHED */ | |
543 | break; | |
544 | ||
f53969cc | 545 | /* Some responses can never be cached */ |
62e76326 | 546 | |
f53969cc | 547 | case Http::scPartialContent: /* Not yet supported */ |
62e76326 | 548 | |
955394ce | 549 | case Http::scSeeOther: |
62e76326 | 550 | |
955394ce | 551 | case Http::scNotModified: |
62e76326 | 552 | |
955394ce | 553 | case Http::scUnauthorized: |
62e76326 | 554 | |
955394ce | 555 | case Http::scProxyAuthenticationRequired: |
62e76326 | 556 | |
f53969cc | 557 | case Http::scInvalidHeader: /* Squid header parsing error */ |
4eb368f9 | 558 | |
955394ce | 559 | case Http::scHeaderTooLarge: |
b004a7fc | 560 | |
955394ce AJ |
561 | case Http::scPaymentRequired: |
562 | case Http::scNotAcceptable: | |
563 | case Http::scRequestTimeout: | |
564 | case Http::scConflict: | |
565 | case Http::scLengthRequired: | |
566 | case Http::scPreconditionFailed: | |
f11c8e2f | 567 | case Http::scPayloadTooLarge: |
955394ce AJ |
568 | case Http::scUnsupportedMediaType: |
569 | case Http::scUnprocessableEntity: | |
570 | case Http::scLocked: | |
571 | case Http::scFailedDependency: | |
572 | case Http::scInsufficientStorage: | |
573 | case Http::scRequestedRangeNotSatisfied: | |
574 | case Http::scExpectationFailed: | |
b004a7fc | 575 | |
9b769c67 | 576 | debugs(22, 3, HERE << "NO because HTTP status " << rep->sline.status()); |
62e76326 | 577 | return 0; |
578 | ||
41217979 AJ |
579 | default: |
580 | /* RFC 2616 section 6.1.1: an unrecognized response MUST NOT be cached. */ | |
9b769c67 | 581 | debugs (11, 3, HERE << "NO because unknown HTTP status code " << rep->sline.status()); |
62e76326 | 582 | return 0; |
583 | ||
584 | /* NOTREACHED */ | |
585 | break; | |
c54e9052 | 586 | } |
62e76326 | 587 | |
79d39a72 | 588 | /* NOTREACHED */ |
c54e9052 | 589 | } |
090089c4 | 590 | |
f5df2040 AJ |
591 | /// assemble a variant key (vary-mark) from the given Vary header and HTTP request |
592 | static void | |
593 | assembleVaryKey(String &vary, SBuf &vstr, const HttpRequest &request) | |
f66a9ef4 | 594 | { |
90ab8f20 | 595 | static const SBuf asterisk("*"); |
f5df2040 AJ |
596 | const char *pos = nullptr; |
597 | const char *item = nullptr; | |
598 | int ilen = 0; | |
62e76326 | 599 | |
f66a9ef4 | 600 | while (strListGetItem(&vary, ',', &item, &ilen, &pos)) { |
81ab22b6 FC |
601 | SBuf name(item, ilen); |
602 | if (name == asterisk) { | |
ee2e0b31 | 603 | vstr = asterisk; |
9776e3cc | 604 | break; |
605 | } | |
81ab22b6 | 606 | name.toLower(); |
90ab8f20 AJ |
607 | if (!vstr.isEmpty()) |
608 | vstr.append(", ", 2); | |
609 | vstr.append(name); | |
f5df2040 AJ |
610 | String hdr(request.header.getByName(name)); |
611 | const char *value = hdr.termedBuf(); | |
62e76326 | 612 | if (value) { |
613 | value = rfc1738_escape_part(value); | |
614 | vstr.append("=\"", 2); | |
615 | vstr.append(value); | |
616 | vstr.append("\"", 1); | |
617 | } | |
618 | ||
30abd221 | 619 | hdr.clean(); |
f66a9ef4 | 620 | } |
f5df2040 | 621 | } |
62e76326 | 622 | |
f5df2040 AJ |
623 | /* |
624 | * For Vary, store the relevant request headers as | |
625 | * virtual headers in the reply | |
626 | * Returns an empty SBuf if the variance cannot be stored | |
627 | */ | |
628 | SBuf | |
629 | httpMakeVaryMark(HttpRequest * request, HttpReply const * reply) | |
630 | { | |
631 | SBuf vstr; | |
632 | String vary; | |
62e76326 | 633 | |
f5df2040 AJ |
634 | vary = reply->header.getList(Http::HdrType::VARY); |
635 | assembleVaryKey(vary, vstr, *request); | |
62e76326 | 636 | |
f5df2040 | 637 | #if X_ACCELERATOR_VARY |
30abd221 | 638 | vary.clean(); |
f5df2040 AJ |
639 | vary = reply->header.getList(Http::HdrType::HDR_X_ACCELERATOR_VARY); |
640 | assembleVaryKey(vary, vstr, *request); | |
f66a9ef4 | 641 | #endif |
62e76326 | 642 | |
90ab8f20 AJ |
643 | debugs(11, 3, vstr); |
644 | return vstr; | |
f66a9ef4 | 645 | } |
646 | ||
2afaba07 | 647 | void |
648 | HttpStateData::keepaliveAccounting(HttpReply *reply) | |
649 | { | |
650 | if (flags.keepalive) | |
651 | if (_peer) | |
95dc7ff4 | 652 | ++ _peer->stats.n_keepalives_sent; |
2afaba07 | 653 | |
654 | if (reply->keep_alive) { | |
655 | if (_peer) | |
95dc7ff4 | 656 | ++ _peer->stats.n_keepalives_recv; |
2afaba07 | 657 | |
af6a12ee AJ |
658 | if (Config.onoff.detect_broken_server_pconns |
659 | && reply->bodySize(request->method) == -1 && !flags.chunked) { | |
e0236918 | 660 | debugs(11, DBG_IMPORTANT, "keepaliveAccounting: Impossible keep-alive header from '" << entry->url() << "'" ); |
bf8fe701 | 661 | // debugs(11, 2, "GOT HTTP REPLY HDR:\n---------\n" << readBuf->content() << "\n----------" ); |
46f4b111 | 662 | flags.keepalive_broken = true; |
2afaba07 | 663 | } |
664 | } | |
665 | } | |
666 | ||
667 | void | |
668 | HttpStateData::checkDateSkew(HttpReply *reply) | |
669 | { | |
670 | if (reply->date > -1 && !_peer) { | |
671 | int skew = abs((int)(reply->date - squid_curtime)); | |
672 | ||
673 | if (skew > 86400) | |
5c51bffb | 674 | debugs(11, 3, "" << request->url.host() << "'s clock is skewed by " << skew << " seconds!"); |
2afaba07 | 675 | } |
676 | } | |
677 | ||
073ba374 | 678 | /** |
4eb368f9 | 679 | * This creates the error page itself.. its likely |
680 | * that the forward ported reply header max size patch | |
681 | * generates non http conformant error pages - in which | |
682 | * case the errors where should be 'BAD_GATEWAY' etc | |
683 | */ | |
b8d8561b | 684 | void |
2afaba07 | 685 | HttpStateData::processReplyHeader() |
f5558c95 | 686 | { |
073ba374 | 687 | /** Creates a blank header. If this routine is made incremental, this will not do */ |
859f1666 AJ |
688 | |
689 | /* NP: all exit points to this function MUST call ctx_exit(ctx) */ | |
c877c0bc | 690 | Ctx ctx = ctx_enter(entry->mem_obj->urlXXX()); |
859f1666 | 691 | |
bf8fe701 | 692 | debugs(11, 3, "processReplyHeader: key '" << entry->getMD5Text() << "'"); |
62e76326 | 693 | |
1a98175f | 694 | assert(!flags.headers_parsed); |
62e76326 | 695 | |
395a814a | 696 | if (!inBuf.length()) { |
859f1666 | 697 | ctx_exit(ctx); |
b73a07d6 | 698 | return; |
859f1666 | 699 | } |
b73a07d6 | 700 | |
f542211b AJ |
701 | /* Attempt to parse the first line; this will define where the protocol, status, reason-phrase and header begin */ |
702 | { | |
703 | if (hp == NULL) | |
704 | hp = new Http1::ResponseParser; | |
705 | ||
706 | bool parsedOk = hp->parse(inBuf); | |
707 | ||
708 | // sync the buffers after parsing. | |
709 | inBuf = hp->remaining(); | |
710 | ||
711 | if (hp->needsMoreData()) { | |
712 | if (eof) { // no more data coming | |
713 | /* Bug 2879: Replies may terminate with \r\n then EOF instead of \r\n\r\n. | |
714 | * We also may receive truncated responses. | |
715 | * Ensure here that we have at minimum two \r\n when EOF is seen. | |
716 | */ | |
717 | inBuf.append("\r\n\r\n", 4); | |
718 | // retry the parse | |
719 | parsedOk = hp->parse(inBuf); | |
720 | // sync the buffers after parsing. | |
721 | inBuf = hp->remaining(); | |
722 | } else { | |
723 | debugs(33, 5, "Incomplete response, waiting for end of response headers"); | |
724 | ctx_exit(ctx); | |
725 | return; | |
726 | } | |
727 | } | |
62e76326 | 728 | |
f542211b AJ |
729 | if (!parsedOk) { |
730 | // unrecoverable parsing error | |
3d67f7e6 | 731 | // TODO: Use Raw! XXX: inBuf no longer has the [beginning of the] malformed header. |
f542211b | 732 | debugs(11, 3, "Non-HTTP-compliant header:\n---------\n" << inBuf << "\n----------"); |
18b4c80d | 733 | flags.headers_parsed = true; |
f542211b | 734 | HttpReply *newrep = new HttpReply; |
3d67f7e6 AR |
735 | newrep->sline.set(Http::ProtocolVersion(), hp->parseStatusCode); |
736 | setVirginReply(newrep); | |
9e008dda AJ |
737 | ctx_exit(ctx); |
738 | return; | |
739 | } | |
f542211b | 740 | } |
9e008dda | 741 | |
f542211b AJ |
742 | /* We know the whole response is in parser now */ |
743 | debugs(11, 2, "HTTP Server " << serverConnection); | |
744 | debugs(11, 2, "HTTP Server RESPONSE:\n---------\n" << | |
745 | hp->messageProtocol() << " " << hp->messageStatus() << " " << hp->reasonPhrase() << "\n" << | |
746 | hp->mimeHeader() << | |
8e100780 | 747 | "----------"); |
9e008dda | 748 | |
8e100780 AJ |
749 | // reset payload tracking to begin after message headers |
750 | payloadSeen = inBuf.length(); | |
9e008dda | 751 | |
f542211b | 752 | HttpReply *newrep = new HttpReply; |
62f9b110 AJ |
753 | // XXX: RFC 7230 indicates we MAY ignore the reason phrase, |
754 | // and use an empty string on unknown status. | |
755 | // We do that now to avoid performance regression from using SBuf::c_str() | |
756 | newrep->sline.set(Http::ProtocolVersion(1,1), hp->messageStatus() /* , hp->reasonPhrase() */); | |
f542211b AJ |
757 | newrep->sline.protocol = newrep->sline.version.protocol = hp->messageProtocol().protocol; |
758 | newrep->sline.version.major = hp->messageProtocol().major; | |
759 | newrep->sline.version.minor = hp->messageProtocol().minor; | |
760 | ||
761 | // parse headers | |
af2980f3 | 762 | if (!newrep->parseHeader(*hp)) { |
f542211b AJ |
763 | // XXX: when Http::ProtocolVersion is a function, remove this hack. just set with messageProtocol() |
764 | newrep->sline.set(Http::ProtocolVersion(), Http::scInvalidHeader); | |
765 | newrep->sline.version.protocol = hp->messageProtocol().protocol; | |
766 | newrep->sline.version.major = hp->messageProtocol().major; | |
767 | newrep->sline.version.minor = hp->messageProtocol().minor; | |
768 | debugs(11, 2, "error parsing response headers mime block"); | |
f5558c95 | 769 | } |
62e76326 | 770 | |
f542211b AJ |
771 | // done with Parser, now process using the HttpReply |
772 | hp = NULL; | |
773 | ||
63df1d28 | 774 | newrep->sources |= request->url.getScheme() == AnyP::PROTO_HTTPS ? Http::Message::srcHttps : Http::Message::srcHttp; |
88df846b | 775 | |
c679653d | 776 | newrep->removeStaleWarnings(); |
3d9e71e6 | 777 | |
9b769c67 | 778 | if (newrep->sline.protocol == AnyP::PROTO_HTTP && newrep->sline.status() >= 100 && newrep->sline.status() < 200) { |
655daa06 | 779 | handle1xx(newrep); |
3d9e71e6 | 780 | ctx_exit(ctx); |
3d9e71e6 AJ |
781 | return; |
782 | } | |
783 | ||
46f4b111 | 784 | flags.chunked = false; |
0c3d3f65 | 785 | if (newrep->sline.protocol == AnyP::PROTO_HTTP && newrep->header.chunked()) { |
46f4b111 | 786 | flags.chunked = true; |
db1720f8 | 787 | httpChunkDecoder = new Http1::TeChunkedParser; |
af0bb8e5 | 788 | } |
789 | ||
9e008dda | 790 | if (!peerSupportsConnectionPinning()) |
e857372a | 791 | request->flags.connectionAuthDisabled = true; |
d67acb4e | 792 | |
585ab260 | 793 | HttpReply *vrep = setVirginReply(newrep); |
46f4b111 | 794 | flags.headers_parsed = true; |
6965ab28 | 795 | |
585ab260 | 796 | keepaliveAccounting(vrep); |
47ac2ebe | 797 | |
585ab260 | 798 | checkDateSkew(vrep); |
47ac2ebe | 799 | |
585ab260 | 800 | processSurrogateControl (vrep); |
528b2c61 | 801 | |
9b769c67 | 802 | request->hier.peer_reply_status = newrep->sline.status(); |
3ff65596 | 803 | |
2afaba07 | 804 | ctx_exit(ctx); |
805 | } | |
806 | ||
655daa06 AR |
807 | /// ignore or start forwarding the 1xx response (a.k.a., control message) |
808 | void | |
809 | HttpStateData::handle1xx(HttpReply *reply) | |
810 | { | |
b248c2a3 | 811 | HttpReply::Pointer msg(reply); // will destroy reply if unused |
655daa06 AR |
812 | |
813 | // one 1xx at a time: we must not be called while waiting for previous 1xx | |
814 | Must(!flags.handling1xx); | |
815 | flags.handling1xx = true; | |
816 | ||
ec69bdb2 CT |
817 | if (!request->canHandle1xx() || request->forcedBodyContinuation) { |
818 | debugs(11, 2, "ignoring 1xx because it is " << (request->forcedBodyContinuation ? "already sent" : "not supported by client")); | |
655daa06 AR |
819 | proceedAfter1xx(); |
820 | return; | |
821 | } | |
822 | ||
823 | #if USE_HTTP_VIOLATIONS | |
824 | // check whether the 1xx response forwarding is allowed by squid.conf | |
825 | if (Config.accessList.reply) { | |
e11513e1 | 826 | ACLFilledChecklist ch(Config.accessList.reply, originalRequest(), NULL); |
b248c2a3 AJ |
827 | ch.reply = reply; |
828 | HTTPMSGLOCK(ch.reply); | |
e0f7153c | 829 | if (ch.fastCheck() != ACCESS_ALLOWED) { // TODO: support slow lookups? |
655daa06 AR |
830 | debugs(11, 3, HERE << "ignoring denied 1xx"); |
831 | proceedAfter1xx(); | |
832 | return; | |
de48b288 | 833 | } |
655daa06 AR |
834 | } |
835 | #endif // USE_HTTP_VIOLATIONS | |
836 | ||
837 | debugs(11, 2, HERE << "forwarding 1xx to client"); | |
838 | ||
839 | // the Sink will use this to call us back after writing 1xx to the client | |
840 | typedef NullaryMemFunT<HttpStateData> CbDialer; | |
841 | const AsyncCall::Pointer cb = JobCallback(11, 3, CbDialer, this, | |
de48b288 | 842 | HttpStateData::proceedAfter1xx); |
e24f13cd | 843 | CallJobHere1(11, 4, request->clientConnectionManager, ConnStateData, |
655daa06 AR |
844 | ConnStateData::sendControlMsg, HttpControlMsg(msg, cb)); |
845 | // If the call is not fired, then the Sink is gone, and HttpStateData | |
846 | // will terminate due to an aborted store entry or another similar error. | |
847 | // If we get stuck, it is not handle1xx fault if we could get stuck | |
848 | // for similar reasons without a 1xx response. | |
849 | } | |
850 | ||
851 | /// restores state and resumes processing after 1xx is ignored or forwarded | |
852 | void | |
853 | HttpStateData::proceedAfter1xx() | |
854 | { | |
855 | Must(flags.handling1xx); | |
8e100780 | 856 | debugs(11, 2, "continuing with " << payloadSeen << " bytes in buffer after 1xx"); |
655daa06 AR |
857 | CallJobHere(11, 3, this, HttpStateData, HttpStateData::processReply); |
858 | } | |
859 | ||
d67acb4e AJ |
860 | /** |
861 | * returns true if the peer can support connection pinning | |
862 | */ | |
863 | bool HttpStateData::peerSupportsConnectionPinning() const | |
864 | { | |
865 | const HttpReply *rep = entry->mem_obj->getReply(); | |
866 | const HttpHeader *hdr = &rep->header; | |
867 | bool rc; | |
868 | String header; | |
869 | ||
870 | if (!_peer) | |
9e008dda AJ |
871 | return true; |
872 | ||
873 | /*If this peer does not support connection pinning (authenticated | |
d67acb4e AJ |
874 | connections) return false |
875 | */ | |
876 | if (!_peer->connection_auth) | |
9e008dda | 877 | return false; |
d67acb4e | 878 | |
9e008dda | 879 | /*The peer supports connection pinning and the http reply status |
d67acb4e AJ |
880 | is not unauthorized, so the related connection can be pinned |
881 | */ | |
9b769c67 | 882 | if (rep->sline.status() != Http::scUnauthorized) |
9e008dda AJ |
883 | return true; |
884 | ||
955394ce | 885 | /*The server respond with Http::scUnauthorized and the peer configured |
9e008dda | 886 | with "connection-auth=on" we know that the peer supports pinned |
d67acb4e AJ |
887 | connections |
888 | */ | |
889 | if (_peer->connection_auth == 1) | |
9e008dda | 890 | return true; |
d67acb4e | 891 | |
9e008dda AJ |
892 | /*At this point peer has configured with "connection-auth=auto" |
893 | parameter so we need some extra checks to decide if we are going | |
d67acb4e AJ |
894 | to allow pinned connections or not |
895 | */ | |
896 | ||
9e008dda | 897 | /*if the peer configured with originserver just allow connection |
d67acb4e AJ |
898 | pinning (squid 2.6 behaviour) |
899 | */ | |
900 | if (_peer->options.originserver) | |
9e008dda | 901 | return true; |
d67acb4e AJ |
902 | |
903 | /*if the connections it is already pinned it is OK*/ | |
45e5102d | 904 | if (request->flags.pinned) |
9e008dda AJ |
905 | return true; |
906 | ||
907 | /*Allow pinned connections only if the Proxy-support header exists in | |
908 | reply and has in its list the "Session-Based-Authentication" | |
d67acb4e AJ |
909 | which means that the peer supports connection pinning. |
910 | */ | |
789217a2 | 911 | if (!hdr->has(Http::HdrType::PROXY_SUPPORT)) |
9e008dda | 912 | return false; |
d67acb4e | 913 | |
789217a2 | 914 | header = hdr->getStrOrList(Http::HdrType::PROXY_SUPPORT); |
d67acb4e | 915 | /* XXX This ought to be done in a case-insensitive manner */ |
d53b3f6d | 916 | rc = (strstr(header.termedBuf(), "Session-Based-Authentication") != NULL); |
d67acb4e AJ |
917 | |
918 | return rc; | |
919 | } | |
920 | ||
5f8252d2 | 921 | // Called when we parsed (and possibly adapted) the headers but |
922 | // had not starting storing (a.k.a., sending) the body yet. | |
2afaba07 | 923 | void |
924 | HttpStateData::haveParsedReplyHeaders() | |
925 | { | |
fccd4a86 | 926 | Client::haveParsedReplyHeaders(); |
c1520b67 | 927 | |
c877c0bc | 928 | Ctx ctx = ctx_enter(entry->mem_obj->urlXXX()); |
585ab260 | 929 | HttpReply *rep = finalReply(); |
2afaba07 | 930 | |
3900307b | 931 | entry->timestampsSet(); |
62e76326 | 932 | |
9bc73deb | 933 | /* Check if object is cacheable or not based on reply code */ |
9b769c67 | 934 | debugs(11, 3, "HTTP CODE: " << rep->sline.status()); |
62e76326 | 935 | |
eace013e EB |
936 | if (const StoreEntry *oldEntry = findPreviouslyCachedEntry(entry)) |
937 | sawDateGoBack = rep->olderThan(oldEntry->getReply()); | |
938 | ||
939 | if (neighbors_do_private_keys && !sawDateGoBack) | |
9b769c67 | 940 | httpMaybeRemovePublic(entry, rep->sline.status()); |
e6ccf245 | 941 | |
7c476309 | 942 | bool varyFailure = false; |
789217a2 | 943 | if (rep->header.has(Http::HdrType::VARY) |
f66a9ef4 | 944 | #if X_ACCELERATOR_VARY |
789217a2 | 945 | || rep->header.has(Http::HdrType::HDR_X_ACCELERATOR_VARY) |
f66a9ef4 | 946 | #endif |
4b44c907 | 947 | ) { |
90ab8f20 | 948 | const SBuf vary(httpMakeVaryMark(request, rep)); |
4b44c907 | 949 | |
90ab8f20 | 950 | if (vary.isEmpty()) { |
5ed72359 | 951 | entry->makePrivate(); |
9b769c67 | 952 | if (!fwd->reforwardableStatus(rep->sline.status())) |
d7d3253b | 953 | EBIT_CLR(entry->flags, ENTRY_FWD_HDR_WAIT); |
7c476309 AJ |
954 | varyFailure = true; |
955 | } else { | |
90ab8f20 | 956 | entry->mem_obj->vary_headers = vary; |
ee2e0b31 AJ |
957 | |
958 | // RFC 7231 section 7.1.4 | |
959 | // Vary:* can be cached, but has mandatory revalidation | |
960 | static const SBuf asterisk("*"); | |
961 | if (vary == asterisk) | |
962 | EBIT_SET(entry->flags, ENTRY_REVALIDATE_ALWAYS); | |
62e76326 | 963 | } |
4b44c907 | 964 | } |
965 | ||
7c476309 AJ |
966 | if (!varyFailure) { |
967 | /* | |
968 | * If its not a reply that we will re-forward, then | |
969 | * allow the client to get it. | |
970 | */ | |
971 | if (!fwd->reforwardableStatus(rep->sline.status())) | |
972 | EBIT_CLR(entry->flags, ENTRY_FWD_HDR_WAIT); | |
2afaba07 | 973 | |
7c476309 | 974 | switch (cacheableReply()) { |
4b44c907 | 975 | |
7c476309 AJ |
976 | case 1: |
977 | entry->makePublic(); | |
978 | break; | |
62e76326 | 979 | |
7c476309 AJ |
980 | case 0: |
981 | entry->makePrivate(); | |
982 | break; | |
62e76326 | 983 | |
7c476309 | 984 | case -1: |
4b44c907 | 985 | |
626096be | 986 | #if USE_HTTP_VIOLATIONS |
7c476309 AJ |
987 | if (Config.negativeTtl > 0) |
988 | entry->cacheNegatively(); | |
989 | else | |
ac9cc053 | 990 | #endif |
7c476309 AJ |
991 | entry->makePrivate(); |
992 | break; | |
4b44c907 | 993 | |
7c476309 AJ |
994 | default: |
995 | assert(0); | |
996 | break; | |
997 | } | |
9bc73deb | 998 | } |
62e76326 | 999 | |
2b59002c AJ |
1000 | if (!ignoreCacheControl) { |
1001 | if (rep->cache_control) { | |
1259f9cf AJ |
1002 | // We are required to revalidate on many conditions. |
1003 | // For security reasons we do so even if storage was caused by refresh_pattern ignore-* option | |
1004 | ||
1005 | // CC:must-revalidate or CC:proxy-revalidate | |
1006 | const bool ccMustRevalidate = (rep->cache_control->proxyRevalidate() || rep->cache_control->mustRevalidate()); | |
1007 | ||
1008 | // CC:no-cache (only if there are no parameters) | |
a1377698 | 1009 | const bool ccNoCacheNoParams = (rep->cache_control->hasNoCache() && rep->cache_control->noCache().size()==0); |
1259f9cf AJ |
1010 | |
1011 | // CC:s-maxage=N | |
1012 | const bool ccSMaxAge = rep->cache_control->hasSMaxAge(); | |
1013 | ||
1014 | // CC:private (yes, these can sometimes be stored) | |
1015 | const bool ccPrivate = rep->cache_control->hasPrivate(); | |
1016 | ||
fa83b766 EB |
1017 | if (ccNoCacheNoParams || ccPrivate) |
1018 | EBIT_SET(entry->flags, ENTRY_REVALIDATE_ALWAYS); | |
1019 | else if (ccMustRevalidate || ccSMaxAge) | |
1020 | EBIT_SET(entry->flags, ENTRY_REVALIDATE_STALE); | |
2b59002c AJ |
1021 | } |
1022 | #if USE_HTTP_VIOLATIONS // response header Pragma::no-cache is undefined in HTTP | |
1023 | else { | |
1024 | // Expensive calculation. So only do it IF the CC: header is not present. | |
1025 | ||
1026 | /* HACK: Pragma: no-cache in _replies_ is not documented in HTTP, | |
1027 | * but servers like "Active Imaging Webcast/2.0" sure do use it */ | |
789217a2 FC |
1028 | if (rep->header.has(Http::HdrType::PRAGMA) && |
1029 | rep->header.hasListMember(Http::HdrType::PRAGMA,"no-cache",',')) | |
fa83b766 | 1030 | EBIT_SET(entry->flags, ENTRY_REVALIDATE_ALWAYS); |
2b59002c AJ |
1031 | } |
1032 | #endif | |
9bc73deb | 1033 | } |
62e76326 | 1034 | |
c3609322 | 1035 | #if HEADERS_LOG |
585ab260 | 1036 | headersLog(1, 0, request->method, rep); |
fc68f6b1 | 1037 | |
c3609322 | 1038 | #endif |
5f8252d2 | 1039 | |
1040 | ctx_exit(ctx); | |
f5558c95 | 1041 | } |
1042 | ||
528b2c61 | 1043 | HttpStateData::ConnectionStatus |
1044 | HttpStateData::statusIfComplete() const | |
603a02fd | 1045 | { |
585ab260 | 1046 | const HttpReply *rep = virginReply(); |
073ba374 AJ |
1047 | /** \par |
1048 | * If the reply wants to close the connection, it takes precedence */ | |
62e76326 | 1049 | |
2afaba07 | 1050 | if (httpHeaderHasConnDir(&rep->header, "close")) |
62e76326 | 1051 | return COMPLETE_NONPERSISTENT_MSG; |
1052 | ||
073ba374 AJ |
1053 | /** \par |
1054 | * If we didn't send a keep-alive request header, then this | |
978e455f | 1055 | * can not be a persistent connection. |
1056 | */ | |
528b2c61 | 1057 | if (!flags.keepalive) |
62e76326 | 1058 | return COMPLETE_NONPERSISTENT_MSG; |
1059 | ||
073ba374 | 1060 | /** \par |
72b63f06 | 1061 | * If we haven't sent the whole request then this can not be a persistent |
1062 | * connection. | |
1063 | */ | |
1064 | if (!flags.request_sent) { | |
7f06a3d8 | 1065 | debugs(11, 2, "Request not yet fully sent " << request->method << ' ' << entry->url()); |
72b63f06 | 1066 | return COMPLETE_NONPERSISTENT_MSG; |
1067 | } | |
1068 | ||
073ba374 | 1069 | /** \par |
9f5a2895 | 1070 | * What does the reply have to say about keep-alive? |
1071 | */ | |
073ba374 AJ |
1072 | /** |
1073 | \bug XXX BUG? | |
b6a2f15e | 1074 | * If the origin server (HTTP/1.0) does not send a keep-alive |
1075 | * header, but keeps the connection open anyway, what happens? | |
1076 | * We'll return here and http.c waits for an EOF before changing | |
1077 | * store_status to STORE_OK. Combine this with ENTRY_FWD_HDR_WAIT | |
1078 | * and an error status code, and we might have to wait until | |
1079 | * the server times out the socket. | |
1080 | */ | |
2afaba07 | 1081 | if (!rep->keep_alive) |
528b2c61 | 1082 | return COMPLETE_NONPERSISTENT_MSG; |
62e76326 | 1083 | |
528b2c61 | 1084 | return COMPLETE_PERSISTENT_MSG; |
1085 | } | |
1086 | ||
1087 | HttpStateData::ConnectionStatus | |
1088 | HttpStateData::persistentConnStatus() const | |
1089 | { | |
9cf7de1b | 1090 | debugs(11, 3, HERE << serverConnection << " eof=" << eof); |
839291ac AJ |
1091 | if (eof) // already reached EOF |
1092 | return COMPLETE_NONPERSISTENT_MSG; | |
1093 | ||
505c2f28 AR |
1094 | /* If server fd is closing (but we have not been notified yet), stop Comm |
1095 | I/O to avoid assertions. TODO: Change Comm API to handle callers that | |
1096 | want more I/O after async closing (usually initiated by others). */ | |
1097 | // XXX: add canReceive or s/canSend/canTalkToServer/ | |
e7cea0ed | 1098 | if (!Comm::IsConnOpen(serverConnection)) |
505c2f28 AR |
1099 | return COMPLETE_NONPERSISTENT_MSG; |
1100 | ||
9035d1d5 AJ |
1101 | /** \par |
1102 | * In chunked response we do not know the content length but we are absolutely | |
af0bb8e5 | 1103 | * sure about the end of response, so we are calling the statusIfComplete to |
9e008dda | 1104 | * decide if we can be persistant |
af0bb8e5 | 1105 | */ |
839291ac | 1106 | if (lastChunk && flags.chunked) |
9e008dda | 1107 | return statusIfComplete(); |
af0bb8e5 | 1108 | |
718d84bf AR |
1109 | const HttpReply *vrep = virginReply(); |
1110 | debugs(11, 5, "persistentConnStatus: content_length=" << vrep->content_length); | |
1111 | ||
47f6e231 | 1112 | const int64_t clen = vrep->bodySize(request->method); |
fc68f6b1 | 1113 | |
bf8fe701 | 1114 | debugs(11, 5, "persistentConnStatus: clen=" << clen); |
2afaba07 | 1115 | |
35282fbf | 1116 | /* If the body size is unknown we must wait for EOF */ |
1117 | if (clen < 0) | |
62e76326 | 1118 | return INCOMPLETE_MSG; |
1119 | ||
9035d1d5 AJ |
1120 | /** \par |
1121 | * If the body size is known, we must wait until we've gotten all of it. */ | |
5f8252d2 | 1122 | if (clen > 0) { |
8e100780 | 1123 | debugs(11,5, "payloadSeen=" << payloadSeen << " content_length=" << vrep->content_length); |
2afaba07 | 1124 | |
8e100780 | 1125 | if (payloadSeen < vrep->content_length) |
5f8252d2 | 1126 | return INCOMPLETE_MSG; |
821beb5e | 1127 | |
8e100780 | 1128 | if (payloadTruncated > 0) // already read more than needed |
821beb5e | 1129 | return COMPLETE_NONPERSISTENT_MSG; // disable pconns |
5f8252d2 | 1130 | } |
62e76326 | 1131 | |
9035d1d5 AJ |
1132 | /** \par |
1133 | * If there is no message body or we got it all, we can be persistent */ | |
5f8252d2 | 1134 | return statusIfComplete(); |
603a02fd | 1135 | } |
090089c4 | 1136 | |
d4a083cc AJ |
1137 | #if USE_DELAY_POOLS |
1138 | static void | |
1139 | readDelayed(void *context, CommRead const &) | |
1140 | { | |
1141 | HttpStateData *state = static_cast<HttpStateData*>(context); | |
57912702 | 1142 | state->flags.do_next_read = true; |
d4a083cc AJ |
1143 | state->maybeReadVirginBody(); |
1144 | } | |
1145 | #endif | |
1146 | ||
c4b7a5a9 | 1147 | void |
e6edd8df | 1148 | HttpStateData::readReply(const CommIoCbParams &io) |
090089c4 | 1149 | { |
5867ac79 | 1150 | Must(!flags.do_next_read); // XXX: should have been set false by mayReadVirginBody() |
46f4b111 | 1151 | flags.do_next_read = false; |
9e008dda | 1152 | |
395a814a | 1153 | debugs(11, 5, io.conn); |
62e76326 | 1154 | |
c8407295 AJ |
1155 | // Bail out early on Comm::ERR_CLOSING - close handlers will tidy up for us |
1156 | if (io.flag == Comm::ERR_CLOSING) { | |
bf8fe701 | 1157 | debugs(11, 3, "http socket closing"); |
c4b7a5a9 | 1158 | return; |
1159 | } | |
1160 | ||
e92e4e44 | 1161 | if (EBIT_TEST(entry->flags, ENTRY_ABORTED)) { |
6dd9a2e4 | 1162 | abortTransaction("store entry aborted while reading reply"); |
62e76326 | 1163 | return; |
e92e4e44 | 1164 | } |
c4b7a5a9 | 1165 | |
5867ac79 AJ |
1166 | Must(Comm::IsConnOpen(serverConnection)); |
1167 | Must(io.conn->fd == serverConnection->fd); | |
fdf55365 | 1168 | |
395a814a AJ |
1169 | /* |
1170 | * Don't reset the timeout value here. The value should be | |
1171 | * counting Config.Timeout.request and applies to the request | |
1172 | * as a whole, not individual read() calls. | |
1173 | * Plus, it breaks our lame *HalfClosed() detection | |
1174 | */ | |
1175 | ||
1ad68518 | 1176 | Must(maybeMakeSpaceAvailable(true)); |
395a814a AJ |
1177 | CommIoCbParams rd(this); // will be expanded with ReadNow results |
1178 | rd.conn = io.conn; | |
1179 | rd.size = entry->bytesWanted(Range<size_t>(0, inBuf.spaceSize())); | |
1180 | #if USE_DELAY_POOLS | |
1181 | if (rd.size < 1) { | |
1182 | assert(entry->mem_obj); | |
1183 | ||
395a814a AJ |
1184 | /* read ahead limit */ |
1185 | /* Perhaps these two calls should both live in MemObject */ | |
d4a083cc | 1186 | AsyncCall::Pointer nilCall; |
395a814a | 1187 | if (!entry->mem_obj->readAheadPolicyCanRead()) { |
d4a083cc | 1188 | entry->mem_obj->delayRead(DeferredRead(readDelayed, this, CommRead(io.conn, NULL, 0, nilCall))); |
395a814a | 1189 | return; |
fdf55365 | 1190 | } |
1191 | ||
395a814a | 1192 | /* delay id limit */ |
d4a083cc | 1193 | entry->mem_obj->mostBytesAllowed().delayRead(DeferredRead(readDelayed, this, CommRead(io.conn, NULL, 0, nilCall))); |
fdf55365 | 1194 | return; |
1195 | } | |
395a814a | 1196 | #endif |
fdf55365 | 1197 | |
395a814a AJ |
1198 | switch (Comm::ReadNow(rd, inBuf)) { |
1199 | case Comm::INPROGRESS: | |
1200 | if (inBuf.isEmpty()) | |
1201 | debugs(33, 2, io.conn << ": no data to process, " << xstrerr(rd.xerrno)); | |
da958e50 | 1202 | flags.do_next_read = true; |
395a814a AJ |
1203 | maybeReadVirginBody(); |
1204 | return; | |
1205 | ||
1206 | case Comm::OK: | |
1207 | { | |
8e100780 | 1208 | payloadSeen += rd.size; |
9a0a18de | 1209 | #if USE_DELAY_POOLS |
2afaba07 | 1210 | DelayId delayId = entry->mem_obj->mostBytesAllowed(); |
395a814a | 1211 | delayId.bytesIn(rd.size); |
447e176b | 1212 | #endif |
62e76326 | 1213 | |
a0864754 AJ |
1214 | statCounter.server.all.kbytes_in += rd.size; |
1215 | statCounter.server.http.kbytes_in += rd.size; | |
95dc7ff4 | 1216 | ++ IOStats.Http.reads; |
62e76326 | 1217 | |
395a814a AJ |
1218 | int bin = 0; |
1219 | for (int clen = rd.size - 1; clen; ++bin) | |
62e76326 | 1220 | clen >>= 1; |
1221 | ||
95dc7ff4 | 1222 | ++ IOStats.Http.read_hist[bin]; |
3ff65596 AR |
1223 | |
1224 | // update peer response time stats (%<pt) | |
e24f13cd | 1225 | const timeval &sent = request->hier.peer_http_request_sent; |
01bd87d8 CT |
1226 | if (sent.tv_sec) |
1227 | tvSub(request->hier.peer_response_time, sent, current_time); | |
1228 | else | |
1229 | request->hier.peer_response_time.tv_sec = -1; | |
30a4f2a8 | 1230 | } |
62e76326 | 1231 | |
395a814a | 1232 | /* Continue to process previously read data */ |
1810a0cb | 1233 | break; |
5fa061b8 | 1234 | |
395a814a | 1235 | case Comm::ENDFILE: // close detected by 0-byte read |
62e76326 | 1236 | eof = 1; |
46f4b111 | 1237 | flags.do_next_read = false; |
da6c8415 | 1238 | |
395a814a AJ |
1239 | /* Continue to process previously read data */ |
1240 | break; | |
1241 | ||
1810a0cb | 1242 | // case Comm::COMM_ERROR: |
395a814a AJ |
1243 | default: // no other flags should ever occur |
1244 | debugs(11, 2, io.conn << ": read failure: " << xstrerr(rd.xerrno)); | |
da958e50 CT |
1245 | ErrorState *err = new ErrorState(ERR_READ_ERROR, Http::scBadGateway, fwd->request); |
1246 | err->xerrno = rd.xerrno; | |
1247 | fwd->fail(err); | |
1248 | flags.do_next_read = false; | |
398bc066 CT |
1249 | closeServer(); |
1250 | mustStop("HttpStateData::readReply"); | |
395a814a | 1251 | return; |
ba82c452 | 1252 | } |
62e76326 | 1253 | |
395a814a | 1254 | /* Process next response from buffer */ |
655daa06 AR |
1255 | processReply(); |
1256 | } | |
1257 | ||
1258 | /// processes the already read and buffered response data, possibly after | |
1259 | /// waiting for asynchronous 1xx control message processing | |
1260 | void | |
de48b288 A |
1261 | HttpStateData::processReply() |
1262 | { | |
655daa06 AR |
1263 | |
1264 | if (flags.handling1xx) { // we came back after handling a 1xx response | |
1265 | debugs(11, 5, HERE << "done with 1xx handling"); | |
1266 | flags.handling1xx = false; | |
1267 | Must(!flags.headers_parsed); | |
1268 | } | |
1269 | ||
ba82c452 | 1270 | if (!flags.headers_parsed) { // have not parsed headers yet? |
1271 | PROF_start(HttpStateData_processReplyHeader); | |
1272 | processReplyHeader(); | |
1273 | PROF_stop(HttpStateData_processReplyHeader); | |
1274 | ||
1275 | if (!continueAfterParsingHeader()) // parsing error or need more data | |
1276 | return; // TODO: send errors to ICAP | |
1277 | ||
ab593f19 | 1278 | adaptOrFinalizeReply(); // may write to, abort, or "close" the entry |
ba82c452 | 1279 | } |
1280 | ||
1281 | // kick more reads if needed and/or process the response body, if any | |
1282 | PROF_start(HttpStateData_processReplyBody); | |
1283 | processReplyBody(); // may call serverComplete() | |
1284 | PROF_stop(HttpStateData_processReplyBody); | |
1285 | } | |
1286 | ||
073ba374 AJ |
1287 | /** |
1288 | \retval true if we can continue with processing the body or doing ICAP. | |
1289 | */ | |
ba82c452 | 1290 | bool |
1291 | HttpStateData::continueAfterParsingHeader() | |
1292 | { | |
655daa06 AR |
1293 | if (flags.handling1xx) { |
1294 | debugs(11, 5, HERE << "wait for 1xx handling"); | |
1295 | Must(!flags.headers_parsed); | |
1296 | return false; | |
1297 | } | |
1298 | ||
073ba374 | 1299 | if (!flags.headers_parsed && !eof) { |
395a814a | 1300 | debugs(11, 9, "needs more at " << inBuf.length()); |
46f4b111 | 1301 | flags.do_next_read = true; |
073ba374 AJ |
1302 | /** \retval false If we have not finished parsing the headers and may get more data. |
1303 | * Schedules more reads to retrieve the missing data. | |
1304 | */ | |
ba82c452 | 1305 | maybeReadVirginBody(); // schedules all kinds of reads; TODO: rename |
073ba374 | 1306 | return false; |
ba82c452 | 1307 | } |
1308 | ||
073ba374 | 1309 | /** If we are done with parsing, check for errors */ |
ba82c452 | 1310 | |
1311 | err_type error = ERR_NONE; | |
1312 | ||
1313 | if (flags.headers_parsed) { // parsed headers, possibly with errors | |
1314 | // check for header parsing errors | |
585ab260 | 1315 | if (HttpReply *vrep = virginReply()) { |
9b769c67 | 1316 | const Http::StatusCode s = vrep->sline.status(); |
2592bc70 | 1317 | const AnyP::ProtocolVersion &v = vrep->sline.version; |
526ed14e | 1318 | if (s == Http::scInvalidHeader && v != Http::ProtocolVersion(0,9)) { |
51b5dcf5 | 1319 | debugs(11, DBG_IMPORTANT, "WARNING: HTTP: Invalid Response: Bad header encountered from " << entry->url() << " AKA " << request->url); |
ba82c452 | 1320 | error = ERR_INVALID_RESP; |
955394ce | 1321 | } else if (s == Http::scHeaderTooLarge) { |
e1381638 AJ |
1322 | fwd->dontRetry(true); |
1323 | error = ERR_TOO_BIG; | |
3e42b356 AR |
1324 | } else if (vrep->header.conflictingContentLength()) { |
1325 | fwd->dontRetry(true); | |
1326 | error = ERR_INVALID_RESP; | |
e1381638 AJ |
1327 | } else { |
1328 | return true; // done parsing, got reply, and no error | |
1329 | } | |
ba82c452 | 1330 | } else { |
1331 | // parsed headers but got no reply | |
51b5dcf5 | 1332 | debugs(11, DBG_IMPORTANT, "WARNING: HTTP: Invalid Response: No reply at all for " << entry->url() << " AKA " << request->url); |
ba82c452 | 1333 | error = ERR_INVALID_RESP; |
62e76326 | 1334 | } |
090089c4 | 1335 | } else { |
ba82c452 | 1336 | assert(eof); |
395a814a | 1337 | if (inBuf.length()) { |
9121eba6 | 1338 | error = ERR_INVALID_RESP; |
51b5dcf5 | 1339 | debugs(11, DBG_IMPORTANT, "WARNING: HTTP: Invalid Response: Headers did not parse at all for " << entry->url() << " AKA " << request->url); |
9121eba6 AJ |
1340 | } else { |
1341 | error = ERR_ZERO_SIZE_OBJECT; | |
51b5dcf5 | 1342 | debugs(11, (request->flags.accelerated?DBG_IMPORTANT:2), "WARNING: HTTP: Invalid Response: No object data received for " << entry->url() << " AKA " << request->url); |
9121eba6 | 1343 | } |
2afaba07 | 1344 | } |
ba82c452 | 1345 | |
1346 | assert(error != ERR_NONE); | |
1347 | entry->reset(); | |
955394ce | 1348 | fwd->fail(new ErrorState(error, Http::scBadGateway, fwd->request)); |
46f4b111 | 1349 | flags.do_next_read = false; |
398bc066 CT |
1350 | closeServer(); |
1351 | mustStop("HttpStateData::continueAfterParsingHeader"); | |
ba82c452 | 1352 | return false; // quit on error |
2afaba07 | 1353 | } |
1354 | ||
821beb5e AR |
1355 | /** truncate what we read if we read too much so that writeReplyBody() |
1356 | writes no more than what we should have read */ | |
1357 | void | |
1358 | HttpStateData::truncateVirginBody() | |
1359 | { | |
1360 | assert(flags.headers_parsed); | |
1361 | ||
1362 | HttpReply *vrep = virginReply(); | |
1363 | int64_t clen = -1; | |
1364 | if (!vrep->expectingBody(request->method, clen) || clen < 0) | |
1365 | return; // no body or a body of unknown size, including chunked | |
1366 | ||
8e100780 | 1367 | if (payloadSeen - payloadTruncated <= clen) |
821beb5e AR |
1368 | return; // we did not read too much or already took care of the extras |
1369 | ||
8e100780 | 1370 | if (const int64_t extras = payloadSeen - payloadTruncated - clen) { |
821beb5e | 1371 | // server sent more that the advertised content length |
8e100780 | 1372 | debugs(11, 5, "payloadSeen=" << payloadSeen << |
e1381638 | 1373 | " clen=" << clen << '/' << vrep->content_length << |
8e100780 | 1374 | " trucated=" << payloadTruncated << '+' << extras); |
821beb5e | 1375 | |
395a814a | 1376 | inBuf.chop(0, inBuf.length() - extras); |
8e100780 | 1377 | payloadTruncated += extras; |
821beb5e AR |
1378 | } |
1379 | } | |
1380 | ||
073ba374 | 1381 | /** |
2afaba07 | 1382 | * Call this when there is data from the origin server |
1383 | * which should be sent to either StoreEntry, or to ICAP... | |
1384 | */ | |
1385 | void | |
5f8252d2 | 1386 | HttpStateData::writeReplyBody() |
2afaba07 | 1387 | { |
821beb5e | 1388 | truncateVirginBody(); // if needed |
395a814a AJ |
1389 | const char *data = inBuf.rawContent(); |
1390 | int len = inBuf.length(); | |
bc81cb2b | 1391 | addVirginReplyBody(data, len); |
395a814a | 1392 | inBuf.consume(len); |
af0bb8e5 | 1393 | } |
fc68f6b1 | 1394 | |
af0bb8e5 | 1395 | bool |
1396 | HttpStateData::decodeAndWriteReplyBody() | |
1397 | { | |
1398 | const char *data = NULL; | |
1399 | int len; | |
e053c141 | 1400 | bool wasThereAnException = false; |
af0bb8e5 | 1401 | assert(flags.chunked); |
1402 | assert(httpChunkDecoder); | |
1403 | SQUID_ENTER_THROWING_CODE(); | |
1404 | MemBuf decodedData; | |
1405 | decodedData.init(); | |
be29ee33 AJ |
1406 | httpChunkDecoder->setPayloadBuffer(&decodedData); |
1407 | const bool doneParsing = httpChunkDecoder->parse(inBuf); | |
1408 | inBuf = httpChunkDecoder->remaining(); // sync buffers after parse | |
af0bb8e5 | 1409 | len = decodedData.contentSize(); |
1410 | data=decodedData.content(); | |
1411 | addVirginReplyBody(data, len); | |
e053c141 | 1412 | if (doneParsing) { |
839291ac | 1413 | lastChunk = 1; |
46f4b111 | 1414 | flags.do_next_read = false; |
af0bb8e5 | 1415 | } |
e053c141 FC |
1416 | SQUID_EXIT_THROWING_CODE(wasThereAnException); |
1417 | return wasThereAnException; | |
e6ccf245 | 1418 | } |
1419 | ||
073ba374 | 1420 | /** |
2afaba07 | 1421 | * processReplyBody has two purposes: |
1422 | * 1 - take the reply body data, if any, and put it into either | |
1423 | * the StoreEntry, or give it over to ICAP. | |
1424 | * 2 - see if we made it to the end of the response (persistent | |
1425 | * connections and such) | |
1426 | */ | |
e6ccf245 | 1427 | void |
2afaba07 | 1428 | HttpStateData::processReplyBody() |
e6ccf245 | 1429 | { |
b7ac5457 | 1430 | Ip::Address client_addr; |
d67acb4e | 1431 | bool ispinned = false; |
fc68f6b1 | 1432 | |
1a98175f | 1433 | if (!flags.headers_parsed) { |
46f4b111 | 1434 | flags.do_next_read = true; |
5f8252d2 | 1435 | maybeReadVirginBody(); |
62e76326 | 1436 | return; |
528b2c61 | 1437 | } |
62e76326 | 1438 | |
a83c6ed6 | 1439 | #if USE_ADAPTATION |
c30ac6ea | 1440 | debugs(11,5, HERE << "adaptationAccessCheckPending=" << adaptationAccessCheckPending); |
a83c6ed6 | 1441 | if (adaptationAccessCheckPending) |
2afaba07 | 1442 | return; |
fc68f6b1 | 1443 | |
2afaba07 | 1444 | #endif |
62e76326 | 1445 | |
2afaba07 | 1446 | /* |
1447 | * At this point the reply headers have been parsed and consumed. | |
1448 | * That means header content has been removed from readBuf and | |
1449 | * it contains only body data. | |
1450 | */ | |
ef85ab2f DK |
1451 | if (entry->isAccepting()) { |
1452 | if (flags.chunked) { | |
1453 | if (!decodeAndWriteReplyBody()) { | |
46f4b111 | 1454 | flags.do_next_read = false; |
ef85ab2f DK |
1455 | serverComplete(); |
1456 | return; | |
1457 | } | |
1458 | } else | |
1459 | writeReplyBody(); | |
1460 | } | |
528b2c61 | 1461 | |
abf396ec AR |
1462 | // storing/sending methods like earlier adaptOrFinalizeReply() or |
1463 | // above writeReplyBody() may release/abort the store entry. | |
e6ccf245 | 1464 | if (EBIT_TEST(entry->flags, ENTRY_ABORTED)) { |
abf396ec AR |
1465 | // TODO: In some cases (e.g., 304), we should keep persistent conn open. |
1466 | // Detect end-of-reply (and, hence, pool our idle pconn) earlier (ASAP). | |
6dd9a2e4 AJ |
1467 | abortTransaction("store entry aborted while storing reply"); |
1468 | return; | |
62e76326 | 1469 | } else |
1470 | switch (persistentConnStatus()) { | |
dc49061a | 1471 | case INCOMPLETE_MSG: { |
3e4bebf8 | 1472 | debugs(11, 5, "processReplyBody: INCOMPLETE_MSG from " << serverConnection); |
21b92762 | 1473 | /* Wait for more data or EOF condition */ |
8d77a37c | 1474 | AsyncCall::Pointer nil; |
21b92762 | 1475 | if (flags.keepalive_broken) { |
8d77a37c | 1476 | commSetConnTimeout(serverConnection, 10, nil); |
21b92762 | 1477 | } else { |
8d77a37c | 1478 | commSetConnTimeout(serverConnection, Config.Timeout.read, nil); |
21b92762 | 1479 | } |
1480 | ||
46f4b111 | 1481 | flags.do_next_read = true; |
dc49061a A |
1482 | } |
1483 | break; | |
62e76326 | 1484 | |
1485 | case COMPLETE_PERSISTENT_MSG: | |
3e4bebf8 | 1486 | debugs(11, 5, "processReplyBody: COMPLETE_PERSISTENT_MSG from " << serverConnection); |
62e76326 | 1487 | /* yes we have to clear all these! */ |
8d77a37c | 1488 | commUnsetConnTimeout(serverConnection); |
46f4b111 | 1489 | flags.do_next_read = false; |
62e76326 | 1490 | |
8d71285d | 1491 | comm_remove_close_handler(serverConnection->fd, closeHandler); |
dc56a9b1 | 1492 | closeHandler = NULL; |
8d71285d | 1493 | fwd->unregister(serverConnection); |
fc68f6b1 | 1494 | |
450fe1cb | 1495 | if (request->flags.spoofClientIp) |
e24f13cd | 1496 | client_addr = request->client_addr; |
fc68f6b1 | 1497 | |
45e5102d | 1498 | if (request->flags.pinned) { |
9e008dda | 1499 | ispinned = true; |
450fe1cb | 1500 | } else if (request->flags.connectionAuth && request->flags.authSent) { |
9e008dda AJ |
1501 | ispinned = true; |
1502 | } | |
1503 | ||
abbd1c5d | 1504 | if (ispinned && request->clientConnectionManager.valid()) { |
5e9c1cc1 | 1505 | request->clientConnectionManager->pinConnection(serverConnection, request, _peer, |
e857372a | 1506 | (request->flags.connectionAuth)); |
bd0723ad | 1507 | } else { |
5c51bffb | 1508 | fwd->pconnPush(serverConnection, request->url.host()); |
bd0723ad | 1509 | } |
1510 | ||
8d71285d | 1511 | serverConnection = NULL; |
5f8252d2 | 1512 | serverComplete(); |
62e76326 | 1513 | return; |
1514 | ||
1515 | case COMPLETE_NONPERSISTENT_MSG: | |
3e4bebf8 | 1516 | debugs(11, 5, "processReplyBody: COMPLETE_NONPERSISTENT_MSG from " << serverConnection); |
5f8252d2 | 1517 | serverComplete(); |
62e76326 | 1518 | return; |
1519 | } | |
1520 | ||
5f8252d2 | 1521 | maybeReadVirginBody(); |
c4b7a5a9 | 1522 | } |
1523 | ||
aea65fec AR |
1524 | bool |
1525 | HttpStateData::mayReadVirginReplyBody() const | |
1526 | { | |
1527 | // TODO: Be more precise here. For example, if/when reading trailer, we may | |
1528 | // not be doneWithServer() yet, but we should return false. Similarly, we | |
1529 | // could still be writing the request body after receiving the whole reply. | |
1530 | return !doneWithServer(); | |
1531 | } | |
1532 | ||
c4b7a5a9 | 1533 | void |
5f8252d2 | 1534 | HttpStateData::maybeReadVirginBody() |
c4b7a5a9 | 1535 | { |
85bef0a7 AR |
1536 | // too late to read |
1537 | if (!Comm::IsConnOpen(serverConnection) || fd_table[serverConnection->fd].closing()) | |
1538 | return; | |
1539 | ||
1ad68518 AJ |
1540 | if (!maybeMakeSpaceAvailable(false)) |
1541 | return; | |
1542 | ||
1543 | // XXX: get rid of the do_next_read flag | |
1544 | // check for the proper reasons preventing read(2) | |
1545 | if (!flags.do_next_read) | |
1546 | return; | |
1547 | ||
1548 | flags.do_next_read = false; | |
1549 | ||
1550 | // must not already be waiting for read(2) ... | |
1551 | assert(!Comm::MonitorsRead(serverConnection->fd)); | |
1552 | ||
1553 | // wait for read(2) to be possible. | |
1554 | typedef CommCbMemFunT<HttpStateData, CommIoCbParams> Dialer; | |
1555 | AsyncCall::Pointer call = JobCallback(11, 5, Dialer, this, HttpStateData::readReply); | |
1556 | Comm::Read(serverConnection, call); | |
1557 | } | |
1558 | ||
1559 | bool | |
1560 | HttpStateData::maybeMakeSpaceAvailable(bool doGrow) | |
1561 | { | |
57912702 AJ |
1562 | // how much we are allowed to buffer |
1563 | const int limitBuffer = (flags.headers_parsed ? Config.readAheadGap : Config.maxReplyHeaderSize); | |
2afaba07 | 1564 | |
57912702 AJ |
1565 | if (limitBuffer < 0 || inBuf.length() >= (SBuf::size_type)limitBuffer) { |
1566 | // when buffer is at or over limit already | |
1567 | debugs(11, 7, "wont read up to " << limitBuffer << ". buffer has (" << inBuf.length() << "/" << inBuf.spaceSize() << ") from " << serverConnection); | |
1568 | debugs(11, DBG_DATA, "buffer has {" << inBuf << "}"); | |
1569 | // Process next response from buffer | |
1570 | processReply(); | |
1ad68518 | 1571 | return false; |
57912702 AJ |
1572 | } |
1573 | ||
1574 | // how much we want to read | |
5867ac79 | 1575 | const size_t read_size = calcBufferSpaceToReserve(inBuf.spaceSize(), (limitBuffer - inBuf.length())); |
57912702 | 1576 | |
5867ac79 | 1577 | if (!read_size) { |
57912702 | 1578 | debugs(11, 7, "wont read up to " << read_size << " into buffer (" << inBuf.length() << "/" << inBuf.spaceSize() << ") from " << serverConnection); |
1ad68518 | 1579 | return false; |
57912702 AJ |
1580 | } |
1581 | ||
1ad68518 AJ |
1582 | // just report whether we could grow or not, dont actually do it |
1583 | if (doGrow) | |
1584 | return (read_size >= 2); | |
1585 | ||
57912702 AJ |
1586 | // we may need to grow the buffer |
1587 | inBuf.reserveSpace(read_size); | |
1588 | debugs(11, 8, (!flags.do_next_read ? "wont" : "may") << | |
1589 | " read up to " << read_size << " bytes info buf(" << inBuf.length() << "/" << inBuf.spaceSize() << | |
1590 | ") from " << serverConnection); | |
2afaba07 | 1591 | |
1ad68518 | 1592 | return (inBuf.spaceSize() >= 2); // only read if there is 1+ bytes of space available |
090089c4 | 1593 | } |
1594 | ||
39cb8c41 | 1595 | /// called after writing the very last request byte (body, last-chunk, etc) |
d576a6a6 | 1596 | void |
39cb8c41 | 1597 | HttpStateData::wroteLast(const CommIoCbParams &io) |
090089c4 | 1598 | { |
9cf7de1b | 1599 | debugs(11, 5, HERE << serverConnection << ": size " << io.size << ": errflag " << io.flag << "."); |
bc87dc25 | 1600 | #if URL_CHECKSUM_DEBUG |
62e76326 | 1601 | |
528b2c61 | 1602 | entry->mem_obj->checkUrlChecksum(); |
bc87dc25 | 1603 | #endif |
62e76326 | 1604 | |
dc56a9b1 | 1605 | if (io.size > 0) { |
49ae8b95 | 1606 | fd_bytes(io.fd, io.size, FD_WRITE); |
a0864754 AJ |
1607 | statCounter.server.all.kbytes_out += io.size; |
1608 | statCounter.server.http.kbytes_out += io.size; | |
ee1679df | 1609 | } |
62e76326 | 1610 | |
c8407295 | 1611 | if (io.flag == Comm::ERR_CLOSING) |
62e76326 | 1612 | return; |
1613 | ||
dc56a9b1 | 1614 | if (io.flag) { |
955394ce | 1615 | ErrorState *err = new ErrorState(ERR_WRITE_ERROR, Http::scBadGateway, fwd->request); |
dc56a9b1 | 1616 | err->xerrno = io.xerrno; |
1617 | fwd->fail(err); | |
398bc066 CT |
1618 | closeServer(); |
1619 | mustStop("HttpStateData::wroteLast"); | |
62e76326 | 1620 | return; |
090089c4 | 1621 | } |
72b63f06 | 1622 | |
39cb8c41 AR |
1623 | sendComplete(); |
1624 | } | |
1625 | ||
1626 | /// successfully wrote the entire request (including body, last-chunk, etc.) | |
1627 | void | |
1628 | HttpStateData::sendComplete() | |
1629 | { | |
2afaba07 | 1630 | /* |
1631 | * Set the read timeout here because it hasn't been set yet. | |
1632 | * We only set the read timeout after the request has been | |
d5430dc8 | 1633 | * fully written to the peer. If we start the timeout |
2afaba07 | 1634 | * after connection establishment, then we are likely to hit |
1635 | * the timeout for POST/PUT requests that have very large | |
1636 | * request bodies. | |
1637 | */ | |
dc56a9b1 | 1638 | typedef CommCbMemFunT<HttpStateData, CommTimeoutCbParams> TimeoutDialer; |
4299f876 | 1639 | AsyncCall::Pointer timeoutCall = JobCallback(11, 5, |
4cb2536f | 1640 | TimeoutDialer, this, HttpStateData::httpTimeout); |
2afaba07 | 1641 | |
8d77a37c | 1642 | commSetConnTimeout(serverConnection, Config.Timeout.read, timeoutCall); |
46f4b111 | 1643 | flags.request_sent = true; |
e24f13cd | 1644 | request->hier.peer_http_request_sent = current_time; |
090089c4 | 1645 | } |
1646 | ||
2afaba07 | 1647 | void |
5f8252d2 | 1648 | HttpStateData::closeServer() |
2afaba07 | 1649 | { |
9cf7de1b | 1650 | debugs(11,5, HERE << "closing HTTP server " << serverConnection << " this " << this); |
fc68f6b1 | 1651 | |
9cf7de1b | 1652 | if (Comm::IsConnOpen(serverConnection)) { |
8d71285d AJ |
1653 | fwd->unregister(serverConnection); |
1654 | comm_remove_close_handler(serverConnection->fd, closeHandler); | |
dc56a9b1 | 1655 | closeHandler = NULL; |
8d71285d | 1656 | serverConnection->close(); |
2afaba07 | 1657 | } |
5f8252d2 | 1658 | } |
2afaba07 | 1659 | |
5f8252d2 | 1660 | bool |
1661 | HttpStateData::doneWithServer() const | |
1662 | { | |
9cf7de1b | 1663 | return !Comm::IsConnOpen(serverConnection); |
2afaba07 | 1664 | } |
1665 | ||
ee0b94f4 HN |
1666 | /* |
1667 | * Fixup authentication request headers for special cases | |
1668 | */ | |
1669 | static void | |
bad9c5e4 | 1670 | httpFixupAuthentication(HttpRequest * request, const HttpHeader * hdr_in, HttpHeader * hdr_out, const Http::StateFlags &flags) |
ee0b94f4 | 1671 | { |
789217a2 | 1672 | Http::HdrType header = flags.originpeer ? Http::HdrType::AUTHORIZATION : Http::HdrType::PROXY_AUTHORIZATION; |
ee0b94f4 HN |
1673 | |
1674 | /* Nothing to do unless we are forwarding to a peer */ | |
45e5102d | 1675 | if (!request->flags.proxying) |
f54f527e | 1676 | return; |
ee0b94f4 HN |
1677 | |
1678 | /* Needs to be explicitly enabled */ | |
e24f13cd | 1679 | if (!request->peer_login) |
f54f527e | 1680 | return; |
ee0b94f4 HN |
1681 | |
1682 | /* Maybe already dealt with? */ | |
1683 | if (hdr_out->has(header)) | |
f54f527e | 1684 | return; |
ee0b94f4 HN |
1685 | |
1686 | /* Nothing to do here for PASSTHRU */ | |
e24f13cd | 1687 | if (strcmp(request->peer_login, "PASSTHRU") == 0) |
f54f527e | 1688 | return; |
ee0b94f4 HN |
1689 | |
1690 | /* PROXYPASS is a special case, single-signon to servers with the proxy password (basic only) */ | |
789217a2 FC |
1691 | if (flags.originpeer && strcmp(request->peer_login, "PROXYPASS") == 0 && hdr_in->has(Http::HdrType::PROXY_AUTHORIZATION)) { |
1692 | const char *auth = hdr_in->getStr(Http::HdrType::PROXY_AUTHORIZATION); | |
ee0b94f4 | 1693 | |
f54f527e AJ |
1694 | if (auth && strncasecmp(auth, "basic ", 6) == 0) { |
1695 | hdr_out->putStr(header, auth); | |
1696 | return; | |
1697 | } | |
ee0b94f4 HN |
1698 | } |
1699 | ||
aadbbd7d AJ |
1700 | uint8_t loginbuf[base64_encode_len(MAX_LOGIN_SZ)]; |
1701 | size_t blen; | |
1702 | struct base64_encode_ctx ctx; | |
1703 | base64_encode_init(&ctx); | |
1704 | ||
ee0b94f4 | 1705 | /* Special mode to pass the username to the upstream cache */ |
e24f13cd | 1706 | if (*request->peer_login == '*') { |
f54f527e | 1707 | const char *username = "-"; |
ee0b94f4 | 1708 | |
e24f13cd CT |
1709 | if (request->extacl_user.size()) |
1710 | username = request->extacl_user.termedBuf(); | |
2f1431ea | 1711 | #if USE_AUTH |
e24f13cd CT |
1712 | else if (request->auth_user_request != NULL) |
1713 | username = request->auth_user_request->username(); | |
2f1431ea | 1714 | #endif |
ee0b94f4 | 1715 | |
aadbbd7d AJ |
1716 | blen = base64_encode_update(&ctx, loginbuf, strlen(username), reinterpret_cast<const uint8_t*>(username)); |
1717 | blen += base64_encode_update(&ctx, loginbuf+blen, strlen(request->peer_login +1), reinterpret_cast<const uint8_t*>(request->peer_login +1)); | |
1718 | blen += base64_encode_final(&ctx, loginbuf+blen); | |
bb64d879 | 1719 | httpHeaderPutStrf(hdr_out, header, "Basic %.*s", (int)blen, loginbuf); |
f54f527e | 1720 | return; |
ee0b94f4 HN |
1721 | } |
1722 | ||
1723 | /* external_acl provided credentials */ | |
e24f13cd CT |
1724 | if (request->extacl_user.size() && request->extacl_passwd.size() && |
1725 | (strcmp(request->peer_login, "PASS") == 0 || | |
1726 | strcmp(request->peer_login, "PROXYPASS") == 0)) { | |
aadbbd7d AJ |
1727 | |
1728 | blen = base64_encode_update(&ctx, loginbuf, request->extacl_user.size(), reinterpret_cast<const uint8_t*>(request->extacl_user.rawBuf())); | |
1729 | blen += base64_encode_update(&ctx, loginbuf+blen, 1, reinterpret_cast<const uint8_t*>(":")); | |
1730 | blen += base64_encode_update(&ctx, loginbuf+blen, request->extacl_passwd.size(), reinterpret_cast<const uint8_t*>(request->extacl_passwd.rawBuf())); | |
1731 | blen += base64_encode_final(&ctx, loginbuf+blen); | |
bb64d879 | 1732 | httpHeaderPutStrf(hdr_out, header, "Basic %.*s", (int)blen, loginbuf); |
f54f527e | 1733 | return; |
ee0b94f4 | 1734 | } |
8fdaa8af AJ |
1735 | // if no external user credentials are available to fake authentication with PASS acts like PASSTHRU |
1736 | if (strcmp(request->peer_login, "PASS") == 0) | |
28204b3b | 1737 | return; |
ee0b94f4 | 1738 | |
9ca29d23 | 1739 | /* Kerberos login to peer */ |
2f1431ea | 1740 | #if HAVE_AUTH_MODULE_NEGOTIATE && HAVE_KRB5 && HAVE_GSSAPI |
e24f13cd | 1741 | if (strncmp(request->peer_login, "NEGOTIATE",strlen("NEGOTIATE")) == 0) { |
9ca29d23 AJ |
1742 | char *Token=NULL; |
1743 | char *PrincipalName=NULL,*p; | |
9825b398 AJ |
1744 | int negotiate_flags = 0; |
1745 | ||
e24f13cd | 1746 | if ((p=strchr(request->peer_login,':')) != NULL ) { |
9ca29d23 AJ |
1747 | PrincipalName=++p; |
1748 | } | |
9825b398 AJ |
1749 | if (request->flags.auth_no_keytab) { |
1750 | negotiate_flags |= PEER_PROXY_NEGOTIATE_NOKEYTAB; | |
1751 | } | |
1752 | Token = peer_proxy_negotiate_auth(PrincipalName, request->peer_host, negotiate_flags); | |
9ca29d23 | 1753 | if (Token) { |
63f03f79 | 1754 | httpHeaderPutStrf(hdr_out, header, "Negotiate %s",Token); |
9ca29d23 AJ |
1755 | } |
1756 | return; | |
1757 | } | |
1758 | #endif /* HAVE_KRB5 && HAVE_GSSAPI */ | |
1759 | ||
aadbbd7d AJ |
1760 | blen = base64_encode_update(&ctx, loginbuf, strlen(request->peer_login), reinterpret_cast<const uint8_t*>(request->peer_login)); |
1761 | blen += base64_encode_final(&ctx, loginbuf+blen); | |
bb64d879 | 1762 | httpHeaderPutStrf(hdr_out, header, "Basic %.*s", (int)blen, loginbuf); |
ee0b94f4 HN |
1763 | return; |
1764 | } | |
1765 | ||
99edd1c3 | 1766 | /* |
9e008dda | 1767 | * build request headers and append them to a given MemBuf |
e5ee81f0 | 1768 | * used by buildRequestPrefix() |
818c6c9e | 1769 | * note: initialised the HttpHeader, the caller is responsible for Clean()-ing |
99edd1c3 | 1770 | */ |
e1e72f06 | 1771 | void |
e5ee81f0 | 1772 | HttpStateData::httpBuildRequestHeader(HttpRequest * request, |
e5ee81f0 | 1773 | StoreEntry * entry, |
4bf68cfa | 1774 | const AccessLogEntryPointer &al, |
e5ee81f0 | 1775 | HttpHeader * hdr_out, |
bad9c5e4 | 1776 | const Http::StateFlags &flags) |
6bf8443a | 1777 | { |
99edd1c3 | 1778 | /* building buffer for complex strings */ |
5999b776 | 1779 | #define BBUF_SZ (MAX_URL+32) |
99edd1c3 | 1780 | LOCAL_ARRAY(char, bbuf, BBUF_SZ); |
67c06f0d | 1781 | LOCAL_ARRAY(char, ntoabuf, MAX_IPSTRLEN); |
e24f13cd | 1782 | const HttpHeader *hdr_in = &request->header; |
67c06f0d | 1783 | const HttpHeaderEntry *e = NULL; |
99edd1c3 | 1784 | HttpHeaderPos pos = HttpHeaderInitPos; |
75faaa7a | 1785 | assert (hdr_out->owner == hoRequest); |
62e76326 | 1786 | |
46017fdd | 1787 | /* use our IMS header if the cached entry has Last-Modified time */ |
fa3e249f | 1788 | if (request->lastmod > -1) |
789217a2 | 1789 | hdr_out->putTime(Http::HdrType::IF_MODIFIED_SINCE, request->lastmod); |
99edd1c3 | 1790 | |
46017fdd CT |
1791 | // Add our own If-None-Match field if the cached entry has a strong ETag. |
1792 | // copyOneHeaderFromClientsideRequestToUpstreamRequest() adds client ones. | |
b38b26cb | 1793 | if (request->etag.size() > 0) { |
789217a2 | 1794 | hdr_out->addEntry(new HttpHeaderEntry(Http::HdrType::IF_NONE_MATCH, NULL, |
7f754be8 | 1795 | request->etag.termedBuf())); |
46017fdd CT |
1796 | } |
1797 | ||
e24f13cd | 1798 | bool we_do_ranges = decideIfWeDoRanges (request); |
528b2c61 | 1799 | |
789217a2 | 1800 | String strConnection (hdr_in->getList(Http::HdrType::CONNECTION)); |
62e76326 | 1801 | |
a9925b40 | 1802 | while ((e = hdr_in->getEntry(&pos))) |
e24f13cd | 1803 | copyOneHeaderFromClientsideRequestToUpstreamRequest(e, strConnection, request, hdr_out, we_do_ranges, flags); |
528b2c61 | 1804 | |
43ae1d95 | 1805 | /* Abstraction break: We should interpret multipart/byterange responses |
528b2c61 | 1806 | * into offset-length data, and this works around our inability to do so. |
1807 | */ | |
e24f13cd | 1808 | if (!we_do_ranges && request->multipartRangeRequest()) { |
62e76326 | 1809 | /* don't cache the result */ |
e857372a | 1810 | request->flags.cachable = false; |
62e76326 | 1811 | /* pretend it's not a range request */ |
f0baf149 | 1812 | request->ignoreRange("want to request the whole object"); |
e857372a | 1813 | request->flags.isRanged = false; |
62e76326 | 1814 | } |
528b2c61 | 1815 | |
99edd1c3 | 1816 | /* append Via */ |
736cb6aa | 1817 | if (Config.onoff.via) { |
30abd221 | 1818 | String strVia; |
789217a2 | 1819 | strVia = hdr_in->getList(Http::HdrType::VIA); |
62e76326 | 1820 | snprintf(bbuf, BBUF_SZ, "%d.%d %s", |
e24f13cd CT |
1821 | request->http_ver.major, |
1822 | request->http_ver.minor, ThisCache); | |
62e76326 | 1823 | strListAdd(&strVia, bbuf, ','); |
789217a2 | 1824 | hdr_out->putStr(Http::HdrType::VIA, strVia.termedBuf()); |
30abd221 | 1825 | strVia.clean(); |
736cb6aa | 1826 | } |
62e76326 | 1827 | |
45e5102d | 1828 | if (request->flags.accelerated) { |
43ae1d95 | 1829 | /* Append Surrogate-Capabilities */ |
789217a2 | 1830 | String strSurrogate(hdr_in->getList(Http::HdrType::SURROGATE_CAPABILITY)); |
45cca89d AJ |
1831 | #if USE_SQUID_ESI |
1832 | snprintf(bbuf, BBUF_SZ, "%s=\"Surrogate/1.0 ESI/1.0\"", Config.Accel.surrogate_id); | |
1833 | #else | |
1834 | snprintf(bbuf, BBUF_SZ, "%s=\"Surrogate/1.0\"", Config.Accel.surrogate_id); | |
1835 | #endif | |
43ae1d95 | 1836 | strListAdd(&strSurrogate, bbuf, ','); |
789217a2 | 1837 | hdr_out->putStr(Http::HdrType::SURROGATE_CAPABILITY, strSurrogate.termedBuf()); |
43ae1d95 | 1838 | } |
43ae1d95 | 1839 | |
67c06f0d | 1840 | /** \pre Handle X-Forwarded-For */ |
9e008dda | 1841 | if (strcmp(opt_forwarded_for, "delete") != 0) { |
c4f30223 | 1842 | |
789217a2 | 1843 | String strFwd = hdr_in->getList(Http::HdrType::X_FORWARDED_FOR); |
c4f30223 | 1844 | |
70df76e3 AR |
1845 | // if we cannot double strFwd size, then it grew past 50% of the limit |
1846 | if (!strFwd.canGrowBy(strFwd.size())) { | |
c4f30223 AR |
1847 | // There is probably a forwarding loop with Via detection disabled. |
1848 | // If we do nothing, String will assert on overflow soon. | |
1849 | // TODO: Terminate all transactions with huge XFF? | |
1850 | strFwd = "error"; | |
1851 | ||
1852 | static int warnedCount = 0; | |
1853 | if (warnedCount++ < 100) { | |
851feda6 | 1854 | const SBuf url(entry ? SBuf(entry->url()) : request->effectiveRequestUri()); |
e0236918 | 1855 | debugs(11, DBG_IMPORTANT, "Warning: likely forwarding loop with " << url); |
c4f30223 AR |
1856 | } |
1857 | } | |
1858 | ||
9e008dda | 1859 | if (strcmp(opt_forwarded_for, "on") == 0) { |
67c06f0d | 1860 | /** If set to ON - append client IP or 'unknown'. */ |
4dd643d5 | 1861 | if ( request->client_addr.isNoAddr() ) |
67c06f0d AJ |
1862 | strListAdd(&strFwd, "unknown", ','); |
1863 | else | |
4dd643d5 | 1864 | strListAdd(&strFwd, request->client_addr.toStr(ntoabuf, MAX_IPSTRLEN), ','); |
9e008dda | 1865 | } else if (strcmp(opt_forwarded_for, "off") == 0) { |
67c06f0d | 1866 | /** If set to OFF - append 'unknown'. */ |
67c06f0d | 1867 | strListAdd(&strFwd, "unknown", ','); |
9e008dda | 1868 | } else if (strcmp(opt_forwarded_for, "transparent") == 0) { |
67c06f0d | 1869 | /** If set to TRANSPARENT - pass through unchanged. */ |
9e008dda | 1870 | } else if (strcmp(opt_forwarded_for, "truncate") == 0) { |
67c06f0d | 1871 | /** If set to TRUNCATE - drop existing list and replace with client IP or 'unknown'. */ |
4dd643d5 | 1872 | if ( request->client_addr.isNoAddr() ) |
67c06f0d AJ |
1873 | strFwd = "unknown"; |
1874 | else | |
4dd643d5 | 1875 | strFwd = request->client_addr.toStr(ntoabuf, MAX_IPSTRLEN); |
67c06f0d | 1876 | } |
9e008dda | 1877 | if (strFwd.size() > 0) |
789217a2 | 1878 | hdr_out->putStr(Http::HdrType::X_FORWARDED_FOR, strFwd.termedBuf()); |
cc192b50 | 1879 | } |
67c06f0d | 1880 | /** If set to DELETE - do not copy through. */ |
6bccf575 | 1881 | |
99edd1c3 | 1882 | /* append Host if not there already */ |
789217a2 | 1883 | if (!hdr_out->has(Http::HdrType::HOST)) { |
e24f13cd | 1884 | if (request->peer_domain) { |
789217a2 | 1885 | hdr_out->putStr(Http::HdrType::HOST, request->peer_domain); |
62e76326 | 1886 | } else { |
5c51bffb | 1887 | SBuf authority = request->url.authority(); |
789217a2 | 1888 | hdr_out->putStr(Http::HdrType::HOST, authority.c_str()); |
62e76326 | 1889 | } |
6bf8443a | 1890 | } |
62e76326 | 1891 | |
c68e9c6b | 1892 | /* append Authorization if known in URL, not in header and going direct */ |
789217a2 | 1893 | if (!hdr_out->has(Http::HdrType::AUTHORIZATION)) { |
92d6986d | 1894 | if (!request->flags.proxying && !request->url.userInfo().isEmpty()) { |
aadbbd7d AJ |
1895 | static uint8_t result[base64_encode_len(MAX_URL*2)]; // should be big enough for a single URI segment |
1896 | struct base64_encode_ctx ctx; | |
1897 | base64_encode_init(&ctx); | |
1898 | size_t blen = base64_encode_update(&ctx, result, request->url.userInfo().length(), reinterpret_cast<const uint8_t*>(request->url.userInfo().rawContent())); | |
1899 | blen += base64_encode_final(&ctx, result+blen); | |
1900 | result[blen] = '\0'; | |
1901 | if (blen) | |
789217a2 | 1902 | httpHeaderPutStrf(hdr_out, Http::HdrType::AUTHORIZATION, "Basic %.*s", (int)blen, result); |
62e76326 | 1903 | } |
c68e9c6b | 1904 | } |
62e76326 | 1905 | |
ee0b94f4 | 1906 | /* Fixup (Proxy-)Authorization special cases. Plain relaying dealt with above */ |
e24f13cd | 1907 | httpFixupAuthentication(request, hdr_in, hdr_out, flags); |
62e76326 | 1908 | |
ee0b94f4 HN |
1909 | /* append Cache-Control, add max-age if not there already */ |
1910 | { | |
a9925b40 | 1911 | HttpHdrCc *cc = hdr_in->getCc(); |
62e76326 | 1912 | |
1913 | if (!cc) | |
a4a03b37 | 1914 | cc = new HttpHdrCc(); |
62e76326 | 1915 | |
7dc5c309 AJ |
1916 | #if 0 /* see bug 2330 */ |
1917 | /* Set no-cache if determined needed but not found */ | |
e24f13cd | 1918 | if (request->flags.nocache) |
1da82544 | 1919 | EBIT_SET(cc->mask, HttpHdrCcType::CC_NO_CACHE); |
7dc5c309 AJ |
1920 | #endif |
1921 | ||
af6a12ee | 1922 | /* Add max-age only without no-cache */ |
1259f9cf | 1923 | if (!cc->hasMaxAge() && !cc->hasNoCache()) { |
851feda6 AJ |
1924 | // XXX: performance regression. c_str() reallocates |
1925 | SBuf tmp(request->effectiveRequestUri()); | |
1926 | cc->maxAge(getMaxAge(entry ? entry->url() : tmp.c_str())); | |
62e76326 | 1927 | } |
1928 | ||
ce2d6441 | 1929 | /* Enforce sibling relations */ |
62e76326 | 1930 | if (flags.only_if_cached) |
4ce6e3b5 | 1931 | cc->onlyIfCached(true); |
62e76326 | 1932 | |
a9925b40 | 1933 | hdr_out->putCc(cc); |
62e76326 | 1934 | |
3d7782c1 | 1935 | delete cc; |
6bf8443a | 1936 | } |
62e76326 | 1937 | |
99edd1c3 | 1938 | /* maybe append Connection: keep-alive */ |
b515fc11 | 1939 | if (flags.keepalive) { |
789217a2 | 1940 | hdr_out->putStr(Http::HdrType::CONNECTION, "keep-alive"); |
603a02fd | 1941 | } |
62e76326 | 1942 | |
a7ad6e4e | 1943 | /* append Front-End-Https */ |
1944 | if (flags.front_end_https) { | |
4e3f4dc7 | 1945 | if (flags.front_end_https == 1 || request->url.getScheme() == AnyP::PROTO_HTTPS) |
789217a2 | 1946 | hdr_out->putStr(Http::HdrType::FRONT_END_HTTPS, "On"); |
a7ad6e4e | 1947 | } |
1948 | ||
e31a1e67 AR |
1949 | if (flags.chunked_request) { |
1950 | // Do not just copy the original value so that if the client-side | |
1951 | // starts decode other encodings, this code may remain valid. | |
789217a2 | 1952 | hdr_out->putStr(Http::HdrType::TRANSFER_ENCODING, "chunked"); |
39cb8c41 AR |
1953 | } |
1954 | ||
6bccf575 | 1955 | /* Now mangle the headers. */ |
cde8f31b | 1956 | httpHdrMangleList(hdr_out, request, al, ROR_REQUEST); |
f4698e0b | 1957 | |
30abd221 | 1958 | strConnection.clean(); |
99edd1c3 | 1959 | } |
1960 | ||
9e498bfb AJ |
1961 | /** |
1962 | * Decides whether a particular header may be cloned from the received Clients request | |
1963 | * to our outgoing fetch request. | |
1964 | */ | |
528b2c61 | 1965 | void |
bad9c5e4 | 1966 | copyOneHeaderFromClientsideRequestToUpstreamRequest(const HttpHeaderEntry *e, const String strConnection, const HttpRequest * request, HttpHeader * hdr_out, const int we_do_ranges, const Http::StateFlags &flags) |
528b2c61 | 1967 | { |
e8466ea9 | 1968 | debugs(11, 5, "httpBuildRequestHeader: " << e->name << ": " << e->value ); |
62e76326 | 1969 | |
528b2c61 | 1970 | switch (e->id) { |
62e76326 | 1971 | |
f53969cc | 1972 | /** \par RFC 2616 sect 13.5.1 - Hop-by-Hop headers which Squid should not pass on. */ |
9e498bfb | 1973 | |
789217a2 | 1974 | case Http::HdrType::PROXY_AUTHORIZATION: |
9e498bfb AJ |
1975 | /** \par Proxy-Authorization: |
1976 | * Only pass on proxy authentication to peers for which | |
62e76326 | 1977 | * authentication forwarding is explicitly enabled |
1978 | */ | |
e24f13cd CT |
1979 | if (!flags.originpeer && flags.proxying && request->peer_login && |
1980 | (strcmp(request->peer_login, "PASS") == 0 || | |
1981 | strcmp(request->peer_login, "PROXYPASS") == 0 || | |
1982 | strcmp(request->peer_login, "PASSTHRU") == 0)) { | |
eede25e7 | 1983 | hdr_out->addEntry(e->clone()); |
62e76326 | 1984 | } |
62e76326 | 1985 | break; |
1986 | ||
f53969cc | 1987 | /** \par RFC 2616 sect 13.5.1 - Hop-by-Hop headers which Squid does not pass on. */ |
9e498bfb | 1988 | |
789217a2 FC |
1989 | case Http::HdrType::CONNECTION: /** \par Connection: */ |
1990 | case Http::HdrType::TE: /** \par TE: */ | |
1991 | case Http::HdrType::KEEP_ALIVE: /** \par Keep-Alive: */ | |
1992 | case Http::HdrType::PROXY_AUTHENTICATE: /** \par Proxy-Authenticate: */ | |
1993 | case Http::HdrType::TRAILER: /** \par Trailer: */ | |
1994 | case Http::HdrType::UPGRADE: /** \par Upgrade: */ | |
1995 | case Http::HdrType::TRANSFER_ENCODING: /** \par Transfer-Encoding: */ | |
9e498bfb AJ |
1996 | break; |
1997 | ||
f53969cc | 1998 | /** \par OTHER headers I haven't bothered to track down yet. */ |
9e498bfb | 1999 | |
789217a2 | 2000 | case Http::HdrType::AUTHORIZATION: |
9e498bfb AJ |
2001 | /** \par WWW-Authorization: |
2002 | * Pass on WWW authentication */ | |
62e76326 | 2003 | |
2004 | if (!flags.originpeer) { | |
eede25e7 | 2005 | hdr_out->addEntry(e->clone()); |
62e76326 | 2006 | } else { |
9e498bfb | 2007 | /** \note In accelerators, only forward authentication if enabled |
ee0b94f4 | 2008 | * (see also httpFixupAuthentication for special cases) |
62e76326 | 2009 | */ |
e24f13cd CT |
2010 | if (request->peer_login && |
2011 | (strcmp(request->peer_login, "PASS") == 0 || | |
2012 | strcmp(request->peer_login, "PASSTHRU") == 0 || | |
2013 | strcmp(request->peer_login, "PROXYPASS") == 0)) { | |
eede25e7 | 2014 | hdr_out->addEntry(e->clone()); |
62e76326 | 2015 | } |
2016 | } | |
2017 | ||
2018 | break; | |
2019 | ||
789217a2 | 2020 | case Http::HdrType::HOST: |
9e498bfb | 2021 | /** \par Host: |
b883b594 | 2022 | * Normally Squid rewrites the Host: header. |
2023 | * However, there is one case when we don't: If the URL | |
62e76326 | 2024 | * went through our redirector and the admin configured |
2025 | * 'redir_rewrites_host' to be off. | |
2026 | */ | |
e24f13cd | 2027 | if (request->peer_domain) |
789217a2 | 2028 | hdr_out->putStr(Http::HdrType::HOST, request->peer_domain); |
45e5102d | 2029 | else if (request->flags.redirected && !Config.onoff.redir_rewrites_host) |
eede25e7 | 2030 | hdr_out->addEntry(e->clone()); |
b883b594 | 2031 | else { |
5c51bffb | 2032 | SBuf authority = request->url.authority(); |
789217a2 | 2033 | hdr_out->putStr(Http::HdrType::HOST, authority.c_str()); |
b883b594 | 2034 | } |
62e76326 | 2035 | |
2036 | break; | |
2037 | ||
789217a2 | 2038 | case Http::HdrType::IF_MODIFIED_SINCE: |
9e498bfb | 2039 | /** \par If-Modified-Since: |
96598f93 AJ |
2040 | * append unless we added our own, |
2041 | * but only if cache_miss_revalidate is enabled, or | |
2042 | * the request is not cacheable, or | |
2043 | * the request contains authentication credentials. | |
2044 | * \note at most one client's If-Modified-Since header can pass through | |
2045 | */ | |
2046 | // XXX: need to check and cleanup the auth case so cacheable auth requests get cached. | |
789217a2 | 2047 | if (hdr_out->has(Http::HdrType::IF_MODIFIED_SINCE)) |
96598f93 AJ |
2048 | break; |
2049 | else if (Config.onoff.cache_miss_revalidate || !request->flags.cachable || request->flags.auth) | |
eede25e7 | 2050 | hdr_out->addEntry(e->clone()); |
96598f93 | 2051 | break; |
62e76326 | 2052 | |
789217a2 | 2053 | case Http::HdrType::IF_NONE_MATCH: |
96598f93 AJ |
2054 | /** \par If-None-Match: |
2055 | * append if the wildcard '*' special case value is present, or | |
2056 | * cache_miss_revalidate is disabled, or | |
2057 | * the request is not cacheable in this proxy, or | |
2058 | * the request contains authentication credentials. | |
2059 | * \note this header lists a set of responses for the server to elide sending. Squid added values are extending that set. | |
2060 | */ | |
2061 | // XXX: need to check and cleanup the auth case so cacheable auth requests get cached. | |
789217a2 | 2062 | if (hdr_out->hasListMember(Http::HdrType::IF_MATCH, "*", ',') || Config.onoff.cache_miss_revalidate || !request->flags.cachable || request->flags.auth) |
eede25e7 | 2063 | hdr_out->addEntry(e->clone()); |
62e76326 | 2064 | break; |
2065 | ||
789217a2 | 2066 | case Http::HdrType::MAX_FORWARDS: |
9e498bfb | 2067 | /** \par Max-Forwards: |
fc90edc3 | 2068 | * pass only on TRACE or OPTIONS requests */ |
c2a7cefd | 2069 | if (request->method == Http::METHOD_TRACE || request->method == Http::METHOD_OPTIONS) { |
fc90edc3 | 2070 | const int64_t hops = e->getInt64(); |
62e76326 | 2071 | |
2072 | if (hops > 0) | |
789217a2 | 2073 | hdr_out->putInt64(Http::HdrType::MAX_FORWARDS, hops - 1); |
62e76326 | 2074 | } |
2075 | ||
2076 | break; | |
2077 | ||
789217a2 | 2078 | case Http::HdrType::VIA: |
9e498bfb AJ |
2079 | /** \par Via: |
2080 | * If Via is disabled then forward any received header as-is. | |
2081 | * Otherwise leave for explicit updated addition later. */ | |
62e76326 | 2082 | |
2083 | if (!Config.onoff.via) | |
eede25e7 | 2084 | hdr_out->addEntry(e->clone()); |
62e76326 | 2085 | |
2086 | break; | |
2087 | ||
789217a2 | 2088 | case Http::HdrType::RANGE: |
62e76326 | 2089 | |
789217a2 | 2090 | case Http::HdrType::IF_RANGE: |
62e76326 | 2091 | |
789217a2 | 2092 | case Http::HdrType::REQUEST_RANGE: |
9e498bfb AJ |
2093 | /** \par Range:, If-Range:, Request-Range: |
2094 | * Only pass if we accept ranges */ | |
62e76326 | 2095 | if (!we_do_ranges) |
eede25e7 | 2096 | hdr_out->addEntry(e->clone()); |
62e76326 | 2097 | |
2098 | break; | |
2099 | ||
789217a2 | 2100 | case Http::HdrType::PROXY_CONNECTION: // SHOULD ignore. But doing so breaks things. |
95e78500 | 2101 | break; |
62e76326 | 2102 | |
789217a2 | 2103 | case Http::HdrType::CONTENT_LENGTH: |
f228d6f6 AR |
2104 | // pass through unless we chunk; also, keeping this away from default |
2105 | // prevents request smuggling via Connection: Content-Length tricks | |
2106 | if (!flags.chunked_request) | |
2107 | hdr_out->addEntry(e->clone()); | |
2108 | break; | |
2109 | ||
789217a2 | 2110 | case Http::HdrType::X_FORWARDED_FOR: |
62e76326 | 2111 | |
789217a2 | 2112 | case Http::HdrType::CACHE_CONTROL: |
95e78500 | 2113 | /** \par X-Forwarded-For:, Cache-Control: |
9e498bfb AJ |
2114 | * handled specially by Squid, so leave off for now. |
2115 | * append these after the loop if needed */ | |
62e76326 | 2116 | break; |
2117 | ||
789217a2 | 2118 | case Http::HdrType::FRONT_END_HTTPS: |
9e498bfb AJ |
2119 | /** \par Front-End-Https: |
2120 | * Pass thru only if peer is configured with front-end-https */ | |
62e76326 | 2121 | if (!flags.front_end_https) |
eede25e7 | 2122 | hdr_out->addEntry(e->clone()); |
62e76326 | 2123 | |
2124 | break; | |
2125 | ||
be753325 | 2126 | default: |
9e498bfb AJ |
2127 | /** \par default. |
2128 | * pass on all other header fields | |
2129 | * which are NOT listed by the special Connection: header. */ | |
2130 | ||
a7a42b14 | 2131 | if (strConnection.size()>0 && strListIsMember(&strConnection, e->name.termedBuf(), ',')) { |
e1ea7456 | 2132 | debugs(11, 2, "'" << e->name << "' header cropped by Connection: definition"); |
9e498bfb AJ |
2133 | return; |
2134 | } | |
2135 | ||
eede25e7 | 2136 | hdr_out->addEntry(e->clone()); |
528b2c61 | 2137 | } |
2138 | } | |
2139 | ||
e5ee81f0 | 2140 | bool |
e24f13cd | 2141 | HttpStateData::decideIfWeDoRanges (HttpRequest * request) |
528b2c61 | 2142 | { |
e5ee81f0 | 2143 | bool result = true; |
62e76326 | 2144 | /* decide if we want to do Ranges ourselves |
2145 | * and fetch the whole object now) | |
2146 | * We want to handle Ranges ourselves iff | |
2147 | * - we can actually parse client Range specs | |
2148 | * - the specs are expected to be simple enough (e.g. no out-of-order ranges) | |
2149 | * - reply will be cachable | |
2150 | * (If the reply will be uncachable we have to throw it away after | |
2151 | * serving this request, so it is better to forward ranges to | |
2152 | * the server and fetch only the requested content) | |
2153 | */ | |
2154 | ||
e24f13cd | 2155 | int64_t roffLimit = request->getRangeOffsetLimit(); |
11e3fa1c | 2156 | |
45e5102d | 2157 | if (NULL == request->range || !request->flags.cachable |
450fe1cb | 2158 | || request->range->offsetLimitExceeded(roffLimit) || request->flags.connectionAuth) |
e5ee81f0 | 2159 | result = false; |
62e76326 | 2160 | |
9e008dda | 2161 | debugs(11, 8, "decideIfWeDoRanges: range specs: " << |
e24f13cd | 2162 | request->range << ", cachable: " << |
45e5102d | 2163 | request->flags.cachable << "; we_do_ranges: " << result); |
62e76326 | 2164 | |
2165 | return result; | |
528b2c61 | 2166 | } |
2167 | ||
62e76326 | 2168 | /* build request prefix and append it to a given MemBuf; |
99edd1c3 | 2169 | * return the length of the prefix */ |
9bc73deb | 2170 | mb_size_t |
e24f13cd | 2171 | HttpStateData::buildRequestPrefix(MemBuf * mb) |
99edd1c3 | 2172 | { |
2173 | const int offset = mb->size; | |
2592bc70 | 2174 | /* Uses a local httpver variable to print the HTTP label |
526ed14e AJ |
2175 | * since the HttpRequest may have an older version label. |
2176 | * XXX: This could create protocol bugs as the headers sent and | |
2177 | * flow control should all be based on the HttpRequest version | |
2178 | * not the one we are sending. Needs checking. | |
2179 | */ | |
2592bc70 | 2180 | const AnyP::ProtocolVersion httpver = Http::ProtocolVersion(); |
851feda6 | 2181 | const SBuf url(_peer && !_peer->options.originserver ? request->effectiveRequestUri() : request->url.path()); |
51b5dcf5 | 2182 | mb->appendf(SQUIDSBUFPH " " SQUIDSBUFPH " %s/%d.%d\r\n", |
4391cd15 | 2183 | SQUIDSBUFPRINT(request->method.image()), |
51b5dcf5 | 2184 | SQUIDSBUFPRINT(url), |
4391cd15 AJ |
2185 | AnyP::ProtocolType_str[httpver.protocol], |
2186 | httpver.major,httpver.minor); | |
99edd1c3 | 2187 | /* build and pack headers */ |
2188 | { | |
75faaa7a | 2189 | HttpHeader hdr(hoRequest); |
4bf68cfa | 2190 | httpBuildRequestHeader(request, entry, fwd->al, &hdr, flags); |
9e008dda | 2191 | |
450fe1cb | 2192 | if (request->flags.pinned && request->flags.connectionAuth) |
e857372a | 2193 | request->flags.authSent = true; |
789217a2 | 2194 | else if (hdr.has(Http::HdrType::AUTHORIZATION)) |
e857372a | 2195 | request->flags.authSent = true; |
d67acb4e | 2196 | |
10201568 | 2197 | hdr.packInto(mb); |
519e0948 | 2198 | hdr.clean(); |
9d9d144b | 2199 | } |
99edd1c3 | 2200 | /* append header terminator */ |
2fe7eff9 | 2201 | mb->append(crlf, 2); |
99edd1c3 | 2202 | return mb->size - offset; |
6bf8443a | 2203 | } |
62e76326 | 2204 | |
090089c4 | 2205 | /* This will be called when connect completes. Write request. */ |
5f8252d2 | 2206 | bool |
2bb867b5 | 2207 | HttpStateData::sendRequest() |
090089c4 | 2208 | { |
99edd1c3 | 2209 | MemBuf mb; |
090089c4 | 2210 | |
9cf7de1b | 2211 | debugs(11, 5, HERE << serverConnection << ", request " << request << ", this " << this << "."); |
a0297974 | 2212 | |
6b679a01 | 2213 | if (!Comm::IsConnOpen(serverConnection)) { |
9cf7de1b | 2214 | debugs(11,3, HERE << "cannot send request to closing " << serverConnection); |
a0297974 AR |
2215 | assert(closeHandler != NULL); |
2216 | return false; | |
2217 | } | |
2218 | ||
dc56a9b1 | 2219 | typedef CommCbMemFunT<HttpStateData, CommTimeoutCbParams> TimeoutDialer; |
4299f876 | 2220 | AsyncCall::Pointer timeoutCall = JobCallback(11, 5, |
4cb2536f | 2221 | TimeoutDialer, this, HttpStateData::httpTimeout); |
8d77a37c | 2222 | commSetConnTimeout(serverConnection, Config.Timeout.lifetime, timeoutCall); |
46f4b111 | 2223 | flags.do_next_read = true; |
5f8252d2 | 2224 | maybeReadVirginBody(); |
2225 | ||
e24f13cd | 2226 | if (request->body_pipe != NULL) { |
123ec4de | 2227 | if (!startRequestBodyFlow()) // register to receive body data |
5f8252d2 | 2228 | return false; |
9e008dda | 2229 | typedef CommCbMemFunT<HttpStateData, CommIoCbParams> Dialer; |
4299f876 | 2230 | requestSender = JobCallback(11,5, |
4cb2536f | 2231 | Dialer, this, HttpStateData::sentRequestBody); |
e31a1e67 AR |
2232 | |
2233 | Must(!flags.chunked_request); | |
f228d6f6 | 2234 | // use chunked encoding if we do not know the length |
e24f13cd | 2235 | if (request->content_length < 0) |
46f4b111 | 2236 | flags.chunked_request = true; |
5f8252d2 | 2237 | } else { |
2238 | assert(!requestBodySource); | |
9e008dda | 2239 | typedef CommCbMemFunT<HttpStateData, CommIoCbParams> Dialer; |
4299f876 | 2240 | requestSender = JobCallback(11,5, |
39cb8c41 | 2241 | Dialer, this, HttpStateData::wroteLast); |
5f8252d2 | 2242 | } |
54220df8 | 2243 | |
e5656c29 AJ |
2244 | flags.originpeer = (_peer != NULL && _peer->options.originserver); |
2245 | flags.proxying = (_peer != NULL && !flags.originpeer); | |
62e76326 | 2246 | |
efb9218c | 2247 | /* |
99edd1c3 | 2248 | * Is keep-alive okay for all request methods? |
efb9218c | 2249 | */ |
450fe1cb | 2250 | if (request->flags.mustKeepalive) |
46f4b111 | 2251 | flags.keepalive = true; |
693cb033 CT |
2252 | else if (request->flags.pinned) |
2253 | flags.keepalive = request->persistent(); | |
d67acb4e | 2254 | else if (!Config.onoff.server_pconns) |
46f4b111 | 2255 | flags.keepalive = false; |
2bb867b5 | 2256 | else if (_peer == NULL) |
46f4b111 | 2257 | flags.keepalive = true; |
2bb867b5 | 2258 | else if (_peer->stats.n_keepalives_sent < 10) |
46f4b111 | 2259 | flags.keepalive = true; |
2bb867b5 | 2260 | else if ((double) _peer->stats.n_keepalives_recv / |
2261 | (double) _peer->stats.n_keepalives_sent > 0.50) | |
46f4b111 | 2262 | flags.keepalive = true; |
2bb867b5 | 2263 | |
2264 | if (_peer) { | |
2ecba5b6 | 2265 | /*The old code here was |
5c51bffb | 2266 | if (neighborType(_peer, request->url) == PEER_SIBLING && ... |
e24f13cd | 2267 | which is equivalent to: |
5c51bffb | 2268 | if (neighborType(_peer, URL()) == PEER_SIBLING && ... |
e24f13cd CT |
2269 | or better: |
2270 | if (((_peer->type == PEER_MULTICAST && p->options.mcast_siblings) || | |
2271 | _peer->type == PEER_SIBLINGS ) && _peer->options.allow_miss) | |
2272 | flags.only_if_cached = 1; | |
2273 | ||
2274 | But I suppose it was a bug | |
2275 | */ | |
5c51bffb | 2276 | if (neighborType(_peer, request->url) == PEER_SIBLING && !_peer->options.allow_miss) |
46f4b111 | 2277 | flags.only_if_cached = true; |
2bb867b5 | 2278 | |
2279 | flags.front_end_https = _peer->front_end_https; | |
a7ad6e4e | 2280 | } |
62e76326 | 2281 | |
2fe7eff9 | 2282 | mb.init(); |
9ca29d23 | 2283 | request->peer_host=_peer?_peer->host:NULL; |
e24f13cd | 2284 | buildRequestPrefix(&mb); |
5f8252d2 | 2285 | |
1ce34ddd AJ |
2286 | debugs(11, 2, "HTTP Server " << serverConnection); |
2287 | debugs(11, 2, "HTTP Server REQUEST:\n---------\n" << mb.buf << "\n----------"); | |
2288 | ||
2289 | Comm::Write(serverConnection, &mb, requestSender); | |
5f8252d2 | 2290 | return true; |
090089c4 | 2291 | } |
b6a2f15e | 2292 | |
39cb8c41 AR |
2293 | bool |
2294 | HttpStateData::getMoreRequestBody(MemBuf &buf) | |
2295 | { | |
2296 | // parent's implementation can handle the no-encoding case | |
e31a1e67 | 2297 | if (!flags.chunked_request) |
fccd4a86 | 2298 | return Client::getMoreRequestBody(buf); |
39cb8c41 AR |
2299 | |
2300 | MemBuf raw; | |
2301 | ||
2302 | Must(requestBodySource != NULL); | |
2303 | if (!requestBodySource->getMoreData(raw)) | |
2304 | return false; // no request body bytes to chunk yet | |
2305 | ||
2306 | // optimization: pre-allocate buffer size that should be enough | |
2307 | const mb_size_t rawDataSize = raw.contentSize(); | |
2308 | // we may need to send: hex-chunk-size CRLF raw-data CRLF last-chunk | |
2309 | buf.init(16 + 2 + rawDataSize + 2 + 5, raw.max_capacity); | |
2310 | ||
4391cd15 | 2311 | buf.appendf("%x\r\n", static_cast<unsigned int>(rawDataSize)); |
39cb8c41 | 2312 | buf.append(raw.content(), rawDataSize); |
4391cd15 | 2313 | buf.append("\r\n", 2); |
39cb8c41 AR |
2314 | |
2315 | Must(rawDataSize > 0); // we did not accidently created last-chunk above | |
2316 | ||
2317 | // Do not send last-chunk unless we successfully received everything | |
2318 | if (receivedWholeRequestBody) { | |
2319 | Must(!flags.sentLastChunk); | |
2320 | flags.sentLastChunk = true; | |
de48b288 | 2321 | buf.append("0\r\n\r\n", 5); |
39cb8c41 AR |
2322 | } |
2323 | ||
2324 | return true; | |
2325 | } | |
2326 | ||
910169e5 | 2327 | void |
b6b6f466 | 2328 | httpStart(FwdState *fwd) |
603a02fd | 2329 | { |
7f06a3d8 | 2330 | debugs(11, 3, fwd->request->method << ' ' << fwd->entry->url()); |
79628299 CT |
2331 | AsyncJob::Start(new HttpStateData(fwd)); |
2332 | } | |
62e76326 | 2333 | |
79628299 CT |
2334 | void |
2335 | HttpStateData::start() | |
2336 | { | |
2337 | if (!sendRequest()) { | |
bf8fe701 | 2338 | debugs(11, 3, "httpStart: aborted"); |
79628299 | 2339 | mustStop("HttpStateData::start failed"); |
5f8252d2 | 2340 | return; |
2341 | } | |
62e76326 | 2342 | |
95dc7ff4 FC |
2343 | ++ statCounter.server.all.requests; |
2344 | ++ statCounter.server.http.requests; | |
62e76326 | 2345 | |
b6a2f15e | 2346 | /* |
2347 | * We used to set the read timeout here, but not any more. | |
2348 | * Now its set in httpSendComplete() after the full request, | |
2349 | * including request body, has been written to the server. | |
2350 | */ | |
090089c4 | 2351 | } |
2352 | ||
39cb8c41 AR |
2353 | /// if broken posts are enabled for the request, try to fix and return true |
2354 | bool | |
2355 | HttpStateData::finishingBrokenPost() | |
2bb867b5 | 2356 | { |
626096be | 2357 | #if USE_HTTP_VIOLATIONS |
39cb8c41 AR |
2358 | if (!Config.accessList.brokenPosts) { |
2359 | debugs(11, 5, HERE << "No brokenPosts list"); | |
2360 | return false; | |
2361 | } | |
a0297974 | 2362 | |
e11513e1 | 2363 | ACLFilledChecklist ch(Config.accessList.brokenPosts, originalRequest(), NULL); |
e0f7153c | 2364 | if (ch.fastCheck() != ACCESS_ALLOWED) { |
39cb8c41 AR |
2365 | debugs(11, 5, HERE << "didn't match brokenPosts"); |
2366 | return false; | |
2367 | } | |
a0297974 | 2368 | |
9cf7de1b | 2369 | if (!Comm::IsConnOpen(serverConnection)) { |
30c48b1a | 2370 | debugs(11, 3, HERE << "ignoring broken POST for closed " << serverConnection); |
39cb8c41 AR |
2371 | assert(closeHandler != NULL); |
2372 | return true; // prevent caller from proceeding as if nothing happened | |
54220df8 | 2373 | } |
39cb8c41 | 2374 | |
30c48b1a | 2375 | debugs(11, 3, "finishingBrokenPost: fixing broken POST"); |
39cb8c41 AR |
2376 | typedef CommCbMemFunT<HttpStateData, CommIoCbParams> Dialer; |
2377 | requestSender = JobCallback(11,5, | |
2378 | Dialer, this, HttpStateData::wroteLast); | |
b0388924 | 2379 | Comm::Write(serverConnection, "\r\n", 2, requestSender, NULL); |
39cb8c41 AR |
2380 | return true; |
2381 | #else | |
2382 | return false; | |
626096be | 2383 | #endif /* USE_HTTP_VIOLATIONS */ |
39cb8c41 AR |
2384 | } |
2385 | ||
2386 | /// if needed, write last-chunk to end the request body and return true | |
2387 | bool | |
2388 | HttpStateData::finishingChunkedRequest() | |
2389 | { | |
2390 | if (flags.sentLastChunk) { | |
2391 | debugs(11, 5, HERE << "already sent last-chunk"); | |
2392 | return false; | |
2393 | } | |
2394 | ||
2395 | Must(receivedWholeRequestBody); // or we should not be sending last-chunk | |
2396 | flags.sentLastChunk = true; | |
2397 | ||
2398 | typedef CommCbMemFunT<HttpStateData, CommIoCbParams> Dialer; | |
e0d28505 | 2399 | requestSender = JobCallback(11,5, Dialer, this, HttpStateData::wroteLast); |
b0388924 | 2400 | Comm::Write(serverConnection, "0\r\n\r\n", 5, requestSender, NULL); |
39cb8c41 AR |
2401 | return true; |
2402 | } | |
2403 | ||
2404 | void | |
2405 | HttpStateData::doneSendingRequestBody() | |
2406 | { | |
fccd4a86 | 2407 | Client::doneSendingRequestBody(); |
9cf7de1b | 2408 | debugs(11,5, HERE << serverConnection); |
39cb8c41 AR |
2409 | |
2410 | // do we need to write something after the last body byte? | |
e31a1e67 | 2411 | if (flags.chunked_request && finishingChunkedRequest()) |
39cb8c41 | 2412 | return; |
e31a1e67 | 2413 | if (!flags.chunked_request && finishingBrokenPost()) |
39cb8c41 | 2414 | return; |
aa49962c | 2415 | |
39cb8c41 | 2416 | sendComplete(); |
94439e4e | 2417 | } |
2418 | ||
5f8252d2 | 2419 | // more origin request body data is available |
2bb867b5 | 2420 | void |
5f8252d2 | 2421 | HttpStateData::handleMoreRequestBodyAvailable() |
2bb867b5 | 2422 | { |
6b679a01 | 2423 | if (eof || !Comm::IsConnOpen(serverConnection)) { |
5f8252d2 | 2424 | // XXX: we should check this condition in other callbacks then! |
2425 | // TODO: Check whether this can actually happen: We should unsubscribe | |
2426 | // as a body consumer when the above condition(s) are detected. | |
e0236918 | 2427 | debugs(11, DBG_IMPORTANT, HERE << "Transaction aborted while reading HTTP body"); |
2bb867b5 | 2428 | return; |
2429 | } | |
62e76326 | 2430 | |
5f8252d2 | 2431 | assert(requestBodySource != NULL); |
fc68f6b1 | 2432 | |
5f8252d2 | 2433 | if (requestBodySource->buf().hasContent()) { |
2434 | // XXX: why does not this trigger a debug message on every request? | |
fc68f6b1 | 2435 | |
2bb867b5 | 2436 | if (flags.headers_parsed && !flags.abuse_detected) { |
46f4b111 | 2437 | flags.abuse_detected = true; |
e0236918 | 2438 | debugs(11, DBG_IMPORTANT, "http handleMoreRequestBodyAvailable: Likely proxy abuse detected '" << request->client_addr << "' -> '" << entry->url() << "'" ); |
21b92762 | 2439 | |
9b769c67 | 2440 | if (virginReply()->sline.status() == Http::scInvalidHeader) { |
398bc066 CT |
2441 | closeServer(); |
2442 | mustStop("HttpStateData::handleMoreRequestBodyAvailable"); | |
21b92762 | 2443 | return; |
2444 | } | |
2445 | } | |
b6a2f15e | 2446 | } |
5f8252d2 | 2447 | |
2448 | HttpStateData::handleMoreRequestBodyAvailable(); | |
376bb137 | 2449 | } |
2450 | ||
5f8252d2 | 2451 | // premature end of the request body |
2bb867b5 | 2452 | void |
5f8252d2 | 2453 | HttpStateData::handleRequestBodyProducerAborted() |
376bb137 | 2454 | { |
fccd4a86 | 2455 | Client::handleRequestBodyProducerAborted(); |
64b66b76 | 2456 | if (entry->isEmpty()) { |
25b481e6 | 2457 | debugs(11, 3, "request body aborted: " << serverConnection); |
8b997339 AR |
2458 | // We usually get here when ICAP REQMOD aborts during body processing. |
2459 | // We might also get here if client-side aborts, but then our response | |
2460 | // should not matter because either client-side will provide its own or | |
2461 | // there will be no response at all (e.g., if the the client has left). | |
955394ce | 2462 | ErrorState *err = new ErrorState(ERR_ICAP_FAILURE, Http::scInternalServerError, fwd->request); |
129fe2a1 | 2463 | err->detailError(ERR_DETAIL_SRV_REQMOD_REQ_BODY); |
64b66b76 CT |
2464 | fwd->fail(err); |
2465 | } | |
2466 | ||
39cb8c41 | 2467 | abortTransaction("request body producer aborted"); |
2bb867b5 | 2468 | } |
2469 | ||
5f8252d2 | 2470 | // called when we wrote request headers(!) or a part of the body |
2bb867b5 | 2471 | void |
dc56a9b1 | 2472 | HttpStateData::sentRequestBody(const CommIoCbParams &io) |
2bb867b5 | 2473 | { |
dc56a9b1 | 2474 | if (io.size > 0) |
a0864754 | 2475 | statCounter.server.http.kbytes_out += io.size; |
fc68f6b1 | 2476 | |
fccd4a86 | 2477 | Client::sentRequestBody(io); |
5f8252d2 | 2478 | } |
3b299123 | 2479 | |
5f8252d2 | 2480 | void |
92cfc72f | 2481 | HttpStateData::abortAll(const char *reason) |
5f8252d2 | 2482 | { |
2483 | debugs(11,5, HERE << "aborting transaction for " << reason << | |
9cf7de1b | 2484 | "; " << serverConnection << ", this " << this); |
70df76e3 | 2485 | mustStop(reason); |
54220df8 | 2486 | } |
f53969cc | 2487 |