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3c66d057 | 1 | |
dd11e0b7 | 2 | /* |
7673173d | 3 | * $Id: client_side.cc,v 1.356 1998/07/18 07:26:20 wessels Exp $ |
dd11e0b7 | 4 | * |
5 | * DEBUG: section 33 Client-side Routines | |
6 | * AUTHOR: Duane Wessels | |
7 | * | |
42c04c16 | 8 | * SQUID Internet Object Cache http://squid.nlanr.net/Squid/ |
dd11e0b7 | 9 | * -------------------------------------------------------- |
10 | * | |
11 | * Squid is the result of efforts by numerous individuals from the | |
12 | * Internet community. Development is led by Duane Wessels of the | |
13 | * National Laboratory for Applied Network Research and funded by | |
14 | * the National Science Foundation. | |
15 | * | |
16 | * This program is free software; you can redistribute it and/or modify | |
17 | * it under the terms of the GNU General Public License as published by | |
18 | * the Free Software Foundation; either version 2 of the License, or | |
19 | * (at your option) any later version. | |
20 | * | |
21 | * This program is distributed in the hope that it will be useful, | |
22 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
23 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
24 | * GNU General Public License for more details. | |
25 | * | |
26 | * You should have received a copy of the GNU General Public License | |
27 | * along with this program; if not, write to the Free Software | |
28 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
29 | * | |
30 | */ | |
f88bb09c | 31 | |
32 | #include "squid.h" | |
33 | ||
5492ad1d | 34 | #if LINGERING_CLOSE |
35 | #define comm_close comm_lingering_close | |
36 | #endif | |
37 | ||
7a2f978b | 38 | static const char *const crlf = "\r\n"; |
cb69b4c7 | 39 | static const char *const proxy_auth_challenge = |
ee1679df | 40 | "Basic realm=\"Squid proxy-caching web server\""; |
7a2f978b | 41 | |
42 | #define REQUEST_BUF_SIZE 4096 | |
43 | #define FAILURE_MODE_TIME 300 | |
44 | ||
45 | /* Local functions */ | |
46 | ||
fc5d6f7f | 47 | static CWCB clientWriteComplete; |
7a2f978b | 48 | static PF clientReadRequest; |
49 | static PF connStateFree; | |
50 | static PF requestTimeout; | |
7a2f978b | 51 | static int CheckQuickAbort2(const clientHttpRequest *); |
1b02b5be | 52 | static int clientCheckTransferDone(clientHttpRequest *); |
7a2f978b | 53 | static void CheckQuickAbort(clientHttpRequest *); |
88aad2e5 | 54 | static void checkFailureRatio(err_type, hier_code); |
fb63215a | 55 | static void clientProcessMiss(clientHttpRequest *); |
eeb423fb | 56 | static void clientBuildReplyHeader(clientHttpRequest * http, HttpReply * rep); |
99edd1c3 | 57 | static clientHttpRequest *parseHttpRequestAbort(ConnStateData * conn, const char *uri); |
7a2f978b | 58 | static clientHttpRequest *parseHttpRequest(ConnStateData *, method_t *, int *, char **, size_t *); |
582b6456 | 59 | static RH clientRedirectDone; |
1b02b5be | 60 | static STCB clientHandleIMSReply; |
f5b8bbc4 | 61 | static int clientGetsOldEntry(StoreEntry * new, StoreEntry * old, request_t * request); |
62 | static int checkAccelOnly(clientHttpRequest *); | |
7c1d4010 | 63 | static int clientOnlyIfCached(clientHttpRequest * http); |
7a2f978b | 64 | static STCB clientSendMoreData; |
65 | static STCB clientCacheHit; | |
99edd1c3 | 66 | static void clientInterpretRequestHeaders(clientHttpRequest *); |
fb63215a | 67 | static void clientProcessRequest(clientHttpRequest *); |
68 | static void clientProcessExpired(void *data); | |
038eb4ed | 69 | static void clientProcessOnlyIfCachedMiss(clientHttpRequest * http); |
cb69b4c7 | 70 | static HttpReply *clientConstructProxyAuthReply(clientHttpRequest * http); |
50ddd7a4 | 71 | static int clientCachable(clientHttpRequest * http); |
72 | static int clientHierarchical(clientHttpRequest * http); | |
efb9218c | 73 | static int clientCheckContentLength(request_t * r); |
ba4f8e5a | 74 | static int httpAcceptDefer(void); |
49d3fcb0 | 75 | static log_type clientProcessRequest2(clientHttpRequest * http); |
ea6f43cd | 76 | |
38d7734b | 77 | static int |
382d851a | 78 | checkAccelOnly(clientHttpRequest * http) |
38d7734b | 79 | { |
80 | /* return TRUE if someone makes a proxy request to us and | |
81 | * we are in httpd-accel only mode */ | |
f1dc9b30 | 82 | if (!Config2.Accel.on) |
38d7734b | 83 | return 0; |
17a0a4ee | 84 | if (Config.onoff.accel_with_proxy) |
38d7734b | 85 | return 0; |
382d851a | 86 | if (http->request->protocol == PROTO_CACHEOBJ) |
38d7734b | 87 | return 0; |
77ed547a | 88 | if (http->flags.accel) |
38d7734b | 89 | return 0; |
90 | return 1; | |
91 | } | |
92 | ||
b8d8561b | 93 | void |
382d851a | 94 | clientAccessCheck(void *data) |
f88bb09c | 95 | { |
382d851a | 96 | clientHttpRequest *http = data; |
97 | ConnStateData *conn = http->conn; | |
99edd1c3 | 98 | const char *browser; |
17a0a4ee | 99 | if (Config.onoff.ident_lookup && conn->ident.state == IDENT_NONE) { |
425ad52e | 100 | identStart(-1, conn, clientAccessCheck, http); |
ba1d2afa | 101 | return; |
102 | } | |
382d851a | 103 | if (checkAccelOnly(http)) { |
104 | clientAccessCheckDone(0, http); | |
75e88d56 | 105 | return; |
f88bb09c | 106 | } |
99edd1c3 | 107 | browser = httpHeaderGetStr(&http->request->header, HDR_USER_AGENT); |
f1dc9b30 | 108 | http->acl_checklist = aclChecklistCreate(Config.accessList.http, |
382d851a | 109 | http->request, |
110 | conn->peer.sin_addr, | |
75e88d56 | 111 | browser, |
382d851a | 112 | conn->ident.ident); |
113 | aclNBCheck(http->acl_checklist, clientAccessCheckDone, http); | |
f88bb09c | 114 | } |
115 | ||
7c1d4010 | 116 | /* |
117 | * returns true if client specified that the object must come from the cache | |
118 | * witout contacting origin server | |
119 | */ | |
120 | static int | |
121 | clientOnlyIfCached(clientHttpRequest * http) | |
122 | { | |
123 | const request_t *r = http->request; | |
124 | assert(r); | |
ea285003 | 125 | return r->cache_control && |
8e092300 | 126 | EBIT_TEST(r->cache_control->mask, CC_ONLY_IF_CACHED); |
7c1d4010 | 127 | } |
128 | ||
cb69b4c7 | 129 | static HttpReply * |
ee1679df | 130 | clientConstructProxyAuthReply(clientHttpRequest * http) |
cb69b4c7 | 131 | { |
132 | ErrorState *err = errorCon(ERR_CACHE_ACCESS_DENIED, HTTP_PROXY_AUTHENTICATION_REQUIRED); | |
133 | HttpReply *rep; | |
134 | err->request = requestLink(http->request); | |
135 | rep = errorBuildReply(err); | |
136 | errorStateFree(err); | |
137 | /* add Authenticate header */ | |
038eb4ed | 138 | httpHeaderPutStr(&rep->header, HDR_PROXY_AUTHENTICATE, proxy_auth_challenge); |
cb69b4c7 | 139 | return rep; |
140 | } | |
fc5d6f7f | 141 | |
23d92c64 | 142 | StoreEntry * |
f44af445 | 143 | clientCreateStoreEntry(clientHttpRequest * h, method_t m, int flags) |
79e0dc20 | 144 | { |
145 | StoreEntry *e; | |
40defb17 | 146 | /* |
147 | * For erroneous requests, we might not have a h->request, | |
148 | * so make a fake one. | |
149 | */ | |
99edd1c3 | 150 | if (h->request == NULL) |
151 | h->request = requestLink(requestCreate(m, PROTO_NONE, NULL)); | |
23d92c64 | 152 | e = storeCreateEntry(h->uri, h->log_uri, flags, m); |
79e0dc20 | 153 | storeClientListAdd(e, h); |
7021844c | 154 | storeClientCopy(e, 0, 0, 4096, memAllocate(MEM_4K_BUF), clientSendMoreData, h); |
79e0dc20 | 155 | return e; |
156 | } | |
157 | ||
158 | ||
b8d8561b | 159 | void |
75e88d56 | 160 | clientAccessCheckDone(int answer, void *data) |
f88bb09c | 161 | { |
382d851a | 162 | clientHttpRequest *http = data; |
02922e76 | 163 | int page_id = -1; |
9b312a19 | 164 | ErrorState *err = NULL; |
23d92c64 | 165 | debug(33, 5) ("clientAccessCheckDone: '%s' answer=%d\n", http->uri, answer); |
382d851a | 166 | http->acl_checklist = NULL; |
fc5d6f7f | 167 | if (answer == ACCESS_ALLOWED) { |
9b5d1d21 | 168 | safe_free(http->uri); |
169 | http->uri = xstrdup(urlCanonical(http->request)); | |
ce66013b | 170 | assert(http->redirect_state == REDIRECT_NONE); |
382d851a | 171 | http->redirect_state = REDIRECT_PENDING; |
172 | redirectStart(http, clientRedirectDone, http); | |
fc5d6f7f | 173 | } else if (answer == ACCESS_REQ_PROXY_AUTH) { |
fc5d6f7f | 174 | http->log_type = LOG_TCP_DENIED; |
f44af445 | 175 | http->entry = clientCreateStoreEntry(http, http->request->method, 0); |
def67559 | 176 | /* create appropriate response */ |
177 | http->entry->mem_obj->reply = clientConstructProxyAuthReply(http); | |
178 | httpReplySwapOut(http->entry->mem_obj->reply, http->entry); | |
0254527a | 179 | storeComplete(http->entry); |
f88bb09c | 180 | } else { |
23d92c64 | 181 | debug(33, 5) ("Access Denied: %s\n", http->uri); |
901e234d | 182 | debug(33, 5) ("AclMatchedName = %s\n", |
6f47fbc7 | 183 | AclMatchedName ? AclMatchedName : "<null>"); |
79a15e0a | 184 | http->log_type = LOG_TCP_DENIED; |
f44af445 | 185 | http->entry = clientCreateStoreEntry(http, http->request->method, 0); |
02922e76 | 186 | page_id = aclGetDenyInfoPage(&Config.denyInfoList, AclMatchedName); |
187 | /* NOTE: don't use HTTP_UNAUTHORIZED because then the | |
188 | * stupid browser wants us to authenticate */ | |
189 | err = errorCon(ERR_ACCESS_DENIED, HTTP_FORBIDDEN); | |
190 | err->request = requestLink(http->request); | |
191 | err->src_addr = http->conn->peer.sin_addr; | |
192 | if (page_id > 0) | |
193 | err->page_id = page_id; | |
194 | errorAppendEntry(http->entry, err); | |
f88bb09c | 195 | } |
196 | } | |
197 | ||
b8d8561b | 198 | static void |
199 | clientRedirectDone(void *data, char *result) | |
f88bb09c | 200 | { |
382d851a | 201 | clientHttpRequest *http = data; |
c0cdaf99 | 202 | request_t *new_request = NULL; |
382d851a | 203 | request_t *old_request = http->request; |
23d92c64 | 204 | debug(33, 5) ("clientRedirectDone: '%s' result=%s\n", http->uri, |
f88bb09c | 205 | result ? result : "NULL"); |
ce66013b | 206 | assert(http->redirect_state == REDIRECT_PENDING); |
382d851a | 207 | http->redirect_state = REDIRECT_DONE; |
77ed547a | 208 | if (result && strcmp(result, http->uri)) |
20cc1450 | 209 | new_request = urlParse(old_request->method, result); |
c0cdaf99 | 210 | if (new_request) { |
23d92c64 | 211 | safe_free(http->uri); |
9b5d1d21 | 212 | http->uri = xstrdup(urlCanonical(new_request)); |
20cc1450 | 213 | new_request->http_ver = old_request->http_ver; |
2246b732 | 214 | httpHeaderAppend(&new_request->header, &old_request->header); |
77ed547a | 215 | new_request->client_addr = old_request->client_addr; |
216 | EBIT_SET(new_request->flags, REQ_REDIRECTED); | |
6cf028ab | 217 | if (old_request->body) { |
218 | new_request->body = xmalloc(old_request->body_sz); | |
219 | xmemcpy(new_request->body, old_request->body, old_request->body_sz); | |
220 | new_request->body_sz = old_request->body_sz; | |
221 | } | |
20cc1450 | 222 | requestUnlink(old_request); |
382d851a | 223 | http->request = requestLink(new_request); |
f88bb09c | 224 | } |
99edd1c3 | 225 | clientInterpretRequestHeaders(http); |
23d92c64 | 226 | fd_note(http->conn->fd, http->uri); |
fb63215a | 227 | clientProcessRequest(http); |
e81957b7 | 228 | } |
229 | ||
fb63215a | 230 | static void |
231 | clientProcessExpired(void *data) | |
620da955 | 232 | { |
382d851a | 233 | clientHttpRequest *http = data; |
23d92c64 | 234 | char *url = http->uri; |
620da955 | 235 | StoreEntry *entry = NULL; |
23d92c64 | 236 | debug(33, 3) ("clientProcessExpired: '%s'\n", http->uri); |
7c1d4010 | 237 | /* |
238 | * check if we are allowed to contact other servers | |
239 | * @?@: Instead of a 504 (Gateway Timeout) reply, we may want to return | |
6106c6fc | 240 | * a stale entry *if* it matches client requirements |
7c1d4010 | 241 | */ |
242 | if (clientOnlyIfCached(http)) { | |
243 | clientProcessOnlyIfCachedMiss(http); | |
244 | return; | |
245 | } | |
79a15e0a | 246 | EBIT_SET(http->request->flags, REQ_REFRESH); |
382d851a | 247 | http->old_entry = http->entry; |
620da955 | 248 | entry = storeCreateEntry(url, |
23d92c64 | 249 | http->log_uri, |
382d851a | 250 | http->request->flags, |
251 | http->request->method); | |
620da955 | 252 | /* NOTE, don't call storeLockObject(), storeCreateEntry() does it */ |
fe96bbe6 | 253 | storeClientListAdd(entry, http); |
254 | storeClientListAdd(http->old_entry, http); | |
382d851a | 255 | entry->lastmod = http->old_entry->lastmod; |
50ddd7a4 | 256 | debug(33, 5) ("clientProcessExpired: setting lmt = %d\n", |
5f6ac48b | 257 | (int) entry->lastmod); |
d1a43e28 | 258 | entry->refcount++; /* EXPIRED CASE */ |
382d851a | 259 | http->entry = entry; |
260 | http->out.offset = 0; | |
d1061d2b | 261 | fwdStart(http->conn->fd, http->entry, http->request, |
262 | http->conn->peer.sin_addr); | |
f990cccc | 263 | /* Register with storage manager to receive updates when data comes in. */ |
0e473d70 | 264 | if (entry->store_status == STORE_ABORTED) |
6cf028ab | 265 | debug(33, 0) ("clientProcessExpired: entry->swap_status == STORE_ABORTED\n"); |
d89d1fb6 | 266 | storeClientCopy(entry, |
fe96bbe6 | 267 | http->out.offset, |
d89d1fb6 | 268 | http->out.offset, |
269 | 4096, | |
7021844c | 270 | memAllocate(MEM_4K_BUF), |
1b02b5be | 271 | clientHandleIMSReply, |
d89d1fb6 | 272 | http); |
620da955 | 273 | } |
274 | ||
91f4d519 | 275 | static int |
276 | clientGetsOldEntry(StoreEntry * new_entry, StoreEntry * old_entry, request_t * request) | |
277 | { | |
71a8a965 | 278 | const http_status status = new_entry->mem_obj->reply->sline.status; |
279 | if (0 == status) { | |
280 | debug(33, 5) ("clientGetsOldEntry: YES, broken HTTP reply\n"); | |
281 | return 1; | |
282 | } | |
91f4d519 | 283 | /* If the reply is anything but "Not Modified" then |
284 | * we must forward it to the client */ | |
71a8a965 | 285 | if (HTTP_NOT_MODIFIED != status) { |
cb69b4c7 | 286 | debug(33, 5) ("clientGetsOldEntry: NO, reply=%d\n", status); |
91f4d519 | 287 | return 0; |
288 | } | |
289 | /* If the client did not send IMS in the request, then it | |
290 | * must get the old object, not this "Not Modified" reply */ | |
79a15e0a | 291 | if (!EBIT_TEST(request->flags, REQ_IMS)) { |
a3d5953d | 292 | debug(33, 5) ("clientGetsOldEntry: YES, no client IMS\n"); |
91f4d519 | 293 | return 1; |
294 | } | |
295 | /* If the client IMS time is prior to the entry LASTMOD time we | |
296 | * need to send the old object */ | |
297 | if (modifiedSince(old_entry, request)) { | |
5f6ac48b | 298 | debug(33, 5) ("clientGetsOldEntry: YES, modified since %d\n", |
1afe05c5 | 299 | (int) request->ims); |
91f4d519 | 300 | return 1; |
301 | } | |
a3d5953d | 302 | debug(33, 5) ("clientGetsOldEntry: NO, new one is fine\n"); |
91f4d519 | 303 | return 0; |
304 | } | |
305 | ||
306 | ||
52d4522b | 307 | static void |
1b02b5be | 308 | clientHandleIMSReply(void *data, char *buf, ssize_t size) |
620da955 | 309 | { |
382d851a | 310 | clientHttpRequest *http = data; |
382d851a | 311 | StoreEntry *entry = http->entry; |
620da955 | 312 | MemObject *mem = entry->mem_obj; |
9fb13bb6 | 313 | const char *url = storeUrl(entry); |
e92d33a5 | 314 | int unlink_request = 0; |
76cff1d4 | 315 | StoreEntry *oldentry; |
49d3fcb0 | 316 | int recopy = 1; |
71a8a965 | 317 | const http_status status = mem->reply->sline.status; |
93f9abd0 | 318 | debug(33, 3) ("clientHandleIMSReply: %s, %d bytes\n", url, (int) size); |
6801f8a8 | 319 | if (size < 0 && entry->store_status != STORE_ABORTED) |
320 | storeAbort(entry, 1); | |
321 | if (entry->store_status == STORE_ABORTED) { | |
1b02b5be | 322 | debug(33, 3) ("clientHandleIMSReply: ABORTED '%s'\n", url); |
c54e9052 | 323 | /* We have an existing entry, but failed to validate it */ |
accc6d47 | 324 | /* Its okay to send the old one anyway */ |
325 | http->log_type = LOG_TCP_REFRESH_FAIL_HIT; | |
326 | storeUnregister(entry, http); | |
327 | storeUnlockObject(entry); | |
328 | entry = http->entry = http->old_entry; | |
329 | entry->refcount++; | |
71a8a965 | 330 | } else if (STORE_PENDING == entry->store_status && 0 == status) { |
1b02b5be | 331 | debug(33, 3) ("clientHandleIMSReply: Incomplete headers for '%s'\n", url); |
4455552a | 332 | if (size >= 4096) { |
333 | /* will not get any bigger than that */ | |
334 | debug(33, 3) ("clientHandleIMSReply: Reply is too large '%s', using old entry\n", url); | |
878570db | 335 | /* use old entry, this repeats the code abovez */ |
4455552a | 336 | http->log_type = LOG_TCP_REFRESH_FAIL_HIT; |
337 | storeUnregister(entry, http); | |
743eebfa | 338 | storeUnlockObject(entry); |
4455552a | 339 | entry = http->entry = http->old_entry; |
340 | entry->refcount++; | |
878570db | 341 | /* continue */ |
4455552a | 342 | } else { |
4455552a | 343 | storeClientCopy(entry, |
344 | http->out.offset + size, | |
345 | http->out.offset, | |
346 | 4096, | |
49d3fcb0 | 347 | buf, |
4455552a | 348 | clientHandleIMSReply, |
349 | http); | |
878570db | 350 | return; |
4455552a | 351 | } |
382d851a | 352 | } else if (clientGetsOldEntry(entry, http->old_entry, http->request)) { |
620da955 | 353 | /* We initiated the IMS request, the client is not expecting |
76cff1d4 | 354 | * 304, so put the good one back. First, make sure the old entry |
355 | * headers have been loaded from disk. */ | |
382d851a | 356 | oldentry = http->old_entry; |
382d851a | 357 | http->log_type = LOG_TCP_REFRESH_HIT; |
d89d1fb6 | 358 | if (oldentry->mem_obj->request == NULL) { |
359 | oldentry->mem_obj->request = requestLink(mem->request); | |
360 | unlink_request = 1; | |
e92d33a5 | 361 | } |
64763c37 | 362 | /* Don't memcpy() the whole reply structure here. For example, |
363 | * www.thegist.com (Netscape/1.13) returns a content-length for | |
364 | * 304's which seems to be the length of the 304 HEADERS!!! and | |
365 | * not the body they refer to. */ | |
71a8a965 | 366 | httpReplyUpdateOnNotModified(oldentry->mem_obj->reply, mem->reply); |
d89d1fb6 | 367 | storeTimestampsSet(oldentry); |
382d851a | 368 | storeUnregister(entry, http); |
6d54aea8 | 369 | storeUnlockObject(entry); |
382d851a | 370 | entry = http->entry = oldentry; |
41fad779 | 371 | entry->timestamp = squid_curtime; |
657266fe | 372 | if (unlink_request) { |
e92d33a5 | 373 | requestUnlink(entry->mem_obj->request); |
657266fe | 374 | entry->mem_obj->request = NULL; |
375 | } | |
620da955 | 376 | } else { |
377 | /* the client can handle this reply, whatever it is */ | |
382d851a | 378 | http->log_type = LOG_TCP_REFRESH_MISS; |
71a8a965 | 379 | if (HTTP_NOT_MODIFIED == mem->reply->sline.status) { |
382d851a | 380 | http->old_entry->timestamp = squid_curtime; |
381 | http->old_entry->refcount++; | |
382 | http->log_type = LOG_TCP_REFRESH_HIT; | |
d1a43e28 | 383 | } |
382d851a | 384 | storeUnregister(http->old_entry, http); |
385 | storeUnlockObject(http->old_entry); | |
49d3fcb0 | 386 | recopy = 0; |
620da955 | 387 | } |
382d851a | 388 | http->old_entry = NULL; /* done with old_entry */ |
49d3fcb0 | 389 | assert(entry->store_status != STORE_ABORTED); |
390 | if (recopy) { | |
391 | storeClientCopy(entry, | |
392 | http->out.offset, | |
393 | http->out.offset, | |
394 | 4096, | |
395 | buf, | |
396 | clientSendMoreData, | |
397 | http); | |
398 | } else { | |
399 | clientSendMoreData(data, buf, size); | |
6cf028ab | 400 | } |
620da955 | 401 | } |
91f4d519 | 402 | |
403 | int | |
304d07cb | 404 | modifiedSince(StoreEntry * entry, request_t * request) |
91f4d519 | 405 | { |
406 | int object_length; | |
407 | MemObject *mem = entry->mem_obj; | |
9fb13bb6 | 408 | debug(33, 3) ("modifiedSince: '%s'\n", storeUrl(entry)); |
91f4d519 | 409 | if (entry->lastmod < 0) |
410 | return 1; | |
411 | /* Find size of the object */ | |
038eb4ed | 412 | object_length = mem->reply->content_length; |
cb69b4c7 | 413 | if (object_length < 0) |
07304bf9 | 414 | object_length = contentLen(entry); |
91f4d519 | 415 | if (entry->lastmod > request->ims) { |
a3d5953d | 416 | debug(33, 3) ("--> YES: entry newer than client\n"); |
91f4d519 | 417 | return 1; |
418 | } else if (entry->lastmod < request->ims) { | |
a3d5953d | 419 | debug(33, 3) ("--> NO: entry older than client\n"); |
91f4d519 | 420 | return 0; |
421 | } else if (request->imslen < 0) { | |
a3d5953d | 422 | debug(33, 3) ("--> NO: same LMT, no client length\n"); |
91f4d519 | 423 | return 0; |
424 | } else if (request->imslen == object_length) { | |
a3d5953d | 425 | debug(33, 3) ("--> NO: same LMT, same length\n"); |
91f4d519 | 426 | return 0; |
427 | } else { | |
a3d5953d | 428 | debug(33, 3) ("--> YES: same LMT, different length\n"); |
91f4d519 | 429 | return 1; |
430 | } | |
431 | } | |
b3b64e58 | 432 | |
99edd1c3 | 433 | #if UNUSED_CODE |
b3b64e58 | 434 | char * |
382d851a | 435 | clientConstructTraceEcho(clientHttpRequest * http) |
b3b64e58 | 436 | { |
437 | LOCAL_ARRAY(char, line, 256); | |
438 | LOCAL_ARRAY(char, buf, 8192); | |
439 | size_t len; | |
440 | memset(buf, '\0', 8192); | |
042461c3 | 441 | snprintf(buf, 8192, "HTTP/1.0 200 OK\r\n"); |
56878878 | 442 | snprintf(line, 256, "Date: %s\r\n", mkrfc1123(squid_curtime)); |
b3b64e58 | 443 | strcat(buf, line); |
042461c3 | 444 | snprintf(line, 256, "Server: Squid/%s\r\n", SQUID_VERSION); |
b3b64e58 | 445 | strcat(buf, line); |
042461c3 | 446 | snprintf(line, 256, "Content-Type: message/http\r\n"); |
b3b64e58 | 447 | strcat(buf, line); |
448 | strcat(buf, "\r\n"); | |
449 | len = strlen(buf); | |
382d851a | 450 | httpBuildRequestHeader(http->request, |
451 | http->request, | |
b3b64e58 | 452 | NULL, /* entry */ |
b3b64e58 | 453 | NULL, /* in_len */ |
454 | buf + len, | |
455 | 8192 - len, | |
603a02fd | 456 | http->conn->fd, |
457 | 0); /* flags */ | |
382d851a | 458 | http->log_type = LOG_TCP_MISS; |
4869e8a1 | 459 | http->http_code = HTTP_OK; |
b3b64e58 | 460 | return buf; |
461 | } | |
99edd1c3 | 462 | #endif /* UNUSED_CODE */ |
a90eae18 | 463 | |
464 | void | |
382d851a | 465 | clientPurgeRequest(clientHttpRequest * http) |
a90eae18 | 466 | { |
a90eae18 | 467 | StoreEntry *entry; |
9b312a19 | 468 | ErrorState *err = NULL; |
9fb13bb6 | 469 | const cache_key *k; |
8d6da567 | 470 | HttpReply *r; |
9b312a19 | 471 | debug(33, 3) ("Config.onoff.enable_purge = %d\n", Config.onoff.enable_purge); |
17a0a4ee | 472 | if (!Config.onoff.enable_purge) { |
79a15e0a | 473 | http->log_type = LOG_TCP_DENIED; |
fe40a877 | 474 | err = errorCon(ERR_ACCESS_DENIED, HTTP_FORBIDDEN); |
9b312a19 | 475 | err->request = requestLink(http->request); |
476 | err->src_addr = http->conn->peer.sin_addr; | |
f44af445 | 477 | http->entry = clientCreateStoreEntry(http, http->request->method, 0); |
79e0dc20 | 478 | errorAppendEntry(http->entry, err); |
a90eae18 | 479 | return; |
480 | } | |
382d851a | 481 | http->log_type = LOG_TCP_MISS; |
23d92c64 | 482 | k = storeKeyPublic(http->uri, METHOD_GET); |
9fb13bb6 | 483 | if ((entry = storeGet(k)) == NULL) { |
9b312a19 | 484 | http->http_code = HTTP_NOT_FOUND; |
a90eae18 | 485 | } else { |
486 | storeRelease(entry); | |
9b312a19 | 487 | http->http_code = HTTP_OK; |
a90eae18 | 488 | } |
49d3fcb0 | 489 | debug(33, 4) ("clientPurgeRequest: Not modified '%s'\n", |
afa9f1cd | 490 | storeUrl(entry)); |
491 | /* | |
492 | * Make a new entry to hold the reply to be written | |
493 | * to the client. | |
494 | */ | |
afa9f1cd | 495 | http->entry = clientCreateStoreEntry(http, http->request->method, 0); |
8d6da567 | 496 | httpReplyReset(r = http->entry->mem_obj->reply); |
497 | httpReplySetHeaders(r, 1.0, http->http_code, NULL, NULL, 0, 0, -1); | |
498 | httpReplySwapOut(r, http->entry); | |
afa9f1cd | 499 | storeComplete(http->entry); |
a90eae18 | 500 | } |
e33ba616 | 501 | |
502 | int | |
ea3a2a69 | 503 | checkNegativeHit(StoreEntry * e) |
e33ba616 | 504 | { |
79a15e0a | 505 | if (!EBIT_TEST(e->flag, ENTRY_NEGCACHED)) |
ea3a2a69 | 506 | return 0; |
507 | if (e->expires <= squid_curtime) | |
508 | return 0; | |
509 | if (e->store_status != STORE_OK) | |
510 | return 0; | |
511 | return 1; | |
e33ba616 | 512 | } |
7a2f978b | 513 | |
2246b732 | 514 | #if UNUSED_CODE |
69c95dd3 | 515 | static void |
516 | updateCDJunkStats() | |
517 | { | |
ea285003 | 518 | /* rewrite */ |
69c95dd3 | 519 | } |
eeb423fb | 520 | |
2246b732 | 521 | #endif |
69c95dd3 | 522 | |
a7c05555 | 523 | void |
0e473d70 | 524 | clientUpdateCounters(clientHttpRequest * http) |
a7c05555 | 525 | { |
ee1679df | 526 | int svc_time = tvSubMsec(http->start, current_time); |
527 | icp_ping_data *i; | |
39edba21 | 528 | HierarchyLogEntry *H; |
0e473d70 | 529 | Counter.client_http.requests++; |
d8b83480 | 530 | if (isTcpHit(http->log_type)) |
0e473d70 | 531 | Counter.client_http.hits++; |
0e473d70 | 532 | if (http->request->err_type != ERR_NONE) |
533 | Counter.client_http.errors++; | |
12cf1be2 | 534 | statHistCount(&Counter.client_http.all_svc_time, svc_time); |
ee1679df | 535 | /* |
536 | * The idea here is not to be complete, but to get service times | |
537 | * for only well-defined types. For example, we don't include | |
538 | * LOG_TCP_REFRESH_FAIL_HIT because its not really a cache hit | |
539 | * (we *tried* to validate it, but failed). | |
540 | */ | |
541 | switch (http->log_type) { | |
542 | case LOG_TCP_IMS_HIT: | |
12cf1be2 | 543 | statHistCount(&Counter.client_http.nm_svc_time, svc_time); |
ee1679df | 544 | break; |
545 | case LOG_TCP_HIT: | |
546 | case LOG_TCP_MEM_HIT: | |
12cf1be2 | 547 | statHistCount(&Counter.client_http.hit_svc_time, svc_time); |
ee1679df | 548 | break; |
549 | case LOG_TCP_MISS: | |
550 | case LOG_TCP_CLIENT_REFRESH_MISS: | |
12cf1be2 | 551 | statHistCount(&Counter.client_http.miss_svc_time, svc_time); |
ee1679df | 552 | break; |
553 | default: | |
554 | /* make compiler warnings go away */ | |
555 | break; | |
556 | } | |
39edba21 | 557 | H = &http->request->hier; |
69c95dd3 | 558 | switch (H->alg) { |
559 | case PEER_SA_DIGEST: | |
17b6e784 | 560 | Counter.cd.times_used++; |
69c95dd3 | 561 | break; |
562 | case PEER_SA_ICP: | |
563 | Counter.icp.times_used++; | |
564 | i = &H->icp; | |
565 | if (0 != i->stop.tv_sec && 0 != i->start.tv_sec) | |
566 | statHistCount(&Counter.icp.query_svc_time, | |
567 | tvSubUsec(i->start, i->stop)); | |
568 | if (i->timeout) | |
569 | Counter.icp.query_timeouts++; | |
570 | break; | |
571 | case PEER_SA_NETDB: | |
572 | Counter.netdb.times_used++; | |
573 | break; | |
574 | default: | |
575 | break; | |
17b6e784 | 576 | } |
a7c05555 | 577 | } |
578 | ||
7a2f978b | 579 | static void |
580 | httpRequestFree(void *data) | |
581 | { | |
582 | clientHttpRequest *http = data; | |
583 | clientHttpRequest **H; | |
584 | ConnStateData *conn = http->conn; | |
585 | StoreEntry *entry = http->entry; | |
586 | request_t *request = http->request; | |
587 | MemObject *mem = NULL; | |
93f9abd0 | 588 | debug(33, 3) ("httpRequestFree: %s\n", storeUrl(entry)); |
1b02b5be | 589 | if (!clientCheckTransferDone(http)) { |
7a2f978b | 590 | if (entry) |
591 | storeUnregister(entry, http); /* unregister BEFORE abort */ | |
592 | CheckQuickAbort(http); | |
593 | entry = http->entry; /* reset, IMS might have changed it */ | |
594 | if (entry && entry->ping_status == PING_WAITING) | |
595 | storeReleaseRequest(entry); | |
7a2f978b | 596 | } |
597 | assert(http->log_type < LOG_TYPE_MAX); | |
598 | if (entry) | |
599 | mem = entry->mem_obj; | |
600 | if (http->out.size || http->log_type) { | |
601 | http->al.icp.opcode = 0; | |
ef65d6ca | 602 | http->al.url = http->log_uri; |
603 | debug(33, 9) ("httpRequestFree: al.url='%s'\n", http->al.url); | |
7a2f978b | 604 | if (mem) { |
cb69b4c7 | 605 | http->al.http.code = mem->reply->sline.status; |
038eb4ed | 606 | http->al.http.content_type = strBuf(mem->reply->content_type); |
7a2f978b | 607 | } |
608 | http->al.cache.caddr = conn->log_addr; | |
609 | http->al.cache.size = http->out.size; | |
610 | http->al.cache.code = http->log_type; | |
611 | http->al.cache.msec = tvSubMsec(http->start, current_time); | |
def67559 | 612 | if (request->user_ident[0]) |
613 | http->al.cache.ident = request->user_ident; | |
614 | else | |
615 | http->al.cache.ident = conn->ident.ident; | |
7a2f978b | 616 | if (request) { |
2246b732 | 617 | Packer p; |
618 | MemBuf mb; | |
619 | memBufDefInit(&mb); | |
620 | packerToMemInit(&p, &mb); | |
621 | httpHeaderPackInto(&request->header, &p); | |
7a2f978b | 622 | http->al.http.method = request->method; |
2246b732 | 623 | http->al.headers.request = xstrdup(mb.buf); |
7a2f978b | 624 | http->al.hier = request->hier; |
2246b732 | 625 | packerClean(&p); |
626 | memBufClean(&mb); | |
7a2f978b | 627 | } |
628 | accessLogLog(&http->al); | |
a7c05555 | 629 | clientUpdateCounters(http); |
6f47fbc7 | 630 | clientdbUpdate(conn->peer.sin_addr, http->log_type, PROTO_HTTP, http->out.size); |
7a2f978b | 631 | } |
632 | if (http->redirect_state == REDIRECT_PENDING) | |
23d92c64 | 633 | redirectUnregister(http->uri, http); |
7a2f978b | 634 | if (http->acl_checklist) |
635 | aclChecklistFree(http->acl_checklist); | |
88aad2e5 | 636 | if (request) |
c24fca87 | 637 | checkFailureRatio(request->err_type, http->al.hier.code); |
23d92c64 | 638 | safe_free(http->uri); |
639 | safe_free(http->log_uri); | |
2246b732 | 640 | safe_free(http->al.headers.request); |
7a2f978b | 641 | safe_free(http->al.headers.reply); |
d192d11f | 642 | stringClean(&http->range_iter.boundary); |
7a2f978b | 643 | if (entry) { |
644 | http->entry = NULL; | |
645 | storeUnregister(entry, http); | |
646 | storeUnlockObject(entry); | |
647 | } | |
648 | /* old_entry might still be set if we didn't yet get the reply | |
1b02b5be | 649 | * code in clientHandleIMSReply() */ |
7a2f978b | 650 | if (http->old_entry) { |
651 | storeUnregister(http->old_entry, http); | |
652 | storeUnlockObject(http->old_entry); | |
653 | http->old_entry = NULL; | |
654 | } | |
655 | requestUnlink(http->request); | |
656 | assert(http != http->next); | |
657 | assert(http->conn->chr != NULL); | |
658 | H = &http->conn->chr; | |
659 | while (*H) { | |
660 | if (*H == http) | |
661 | break; | |
662 | H = &(*H)->next; | |
663 | } | |
664 | assert(*H != NULL); | |
665 | *H = http->next; | |
666 | http->next = NULL; | |
667 | cbdataFree(http); | |
668 | } | |
669 | ||
670 | /* This is a handler normally called by comm_close() */ | |
671 | static void | |
672 | connStateFree(int fd, void *data) | |
673 | { | |
674 | ConnStateData *connState = data; | |
675 | clientHttpRequest *http; | |
93f9abd0 | 676 | debug(33, 3) ("connStateFree: FD %d\n", fd); |
7a2f978b | 677 | assert(connState != NULL); |
79d39a72 | 678 | while ((http = connState->chr) != NULL) { |
7a2f978b | 679 | assert(http->conn == connState); |
680 | assert(connState->chr != connState->chr->next); | |
681 | httpRequestFree(http); | |
682 | } | |
683 | if (connState->ident.fd > -1) | |
684 | comm_close(connState->ident.fd); | |
685 | safe_free(connState->in.buf); | |
59c4d35b | 686 | /* XXX account connState->in.buf */ |
7a2f978b | 687 | pconnHistCount(0, connState->nrequests); |
688 | cbdataFree(connState); | |
689 | } | |
690 | ||
691 | static void | |
99edd1c3 | 692 | clientInterpretRequestHeaders(clientHttpRequest * http) |
7a2f978b | 693 | { |
694 | request_t *request = http->request; | |
99edd1c3 | 695 | #if OLD_CODE |
7a2f978b | 696 | char *request_hdr = request->headers; |
99edd1c3 | 697 | const char *t = NULL; |
698 | #else | |
699 | const HttpHeader *req_hdr = &request->header; | |
700 | #if USE_USERAGENT_LOG | |
701 | const char *str; | |
702 | #endif | |
703 | #endif | |
704 | #if OLD_CODE | |
7a2f978b | 705 | request->ims = -2; |
706 | request->imslen = -1; | |
99edd1c3 | 707 | if ((t = httpHeaderGetStr(req_hdr, HDR_IF_MODIFIED_SINCE))) { |
79a15e0a | 708 | EBIT_SET(request->flags, REQ_IMS); |
7a2f978b | 709 | request->ims = parse_rfc1123(t); |
99edd1c3 | 710 | /* |
711 | * "length=..." is not in the HTTP/1.1 specs. Any real proof that we | |
712 | * should hornor it? Send complains to rousskov@nlanr.net | |
713 | */ | |
7a2f978b | 714 | while ((t = strchr(t, ';'))) { |
715 | for (t++; isspace(*t); t++); | |
716 | if (strncasecmp(t, "length=", 7) == 0) | |
717 | request->imslen = atoi(t + 7); | |
718 | } | |
719 | } | |
99edd1c3 | 720 | #else |
721 | request->imslen = -1; | |
722 | request->ims = httpHeaderGetTime(req_hdr, HDR_IF_MODIFIED_SINCE); | |
723 | if (request->ims > 0) | |
724 | EBIT_SET(request->flags, REQ_IMS); | |
725 | #endif | |
726 | if (httpHeaderHas(req_hdr, HDR_PRAGMA)) { | |
727 | String s = httpHeaderGetList(req_hdr, HDR_PRAGMA); | |
465dc415 | 728 | if (strListIsMember(&s, "no-cache", ',')) { |
729 | if (!Config.onoff.reload_into_ims) | |
ebb6e9a0 | 730 | EBIT_SET(request->flags, REQ_NOCACHE); |
465dc415 | 731 | else |
ebb6e9a0 | 732 | EBIT_SET(request->flags, REQ_NOCACHE_HACK); |
465dc415 | 733 | } |
99edd1c3 | 734 | stringClean(&s); |
7a2f978b | 735 | } |
d192d11f | 736 | #if OLD_CODE |
99edd1c3 | 737 | if (httpHeaderHas(req_hdr, HDR_RANGE)) { |
79a15e0a | 738 | EBIT_SET(request->flags, REQ_NOCACHE); |
739 | EBIT_SET(request->flags, REQ_RANGE); | |
99edd1c3 | 740 | /* Request-Range: deleted, not in the specs. Does it exist? */ |
7a2f978b | 741 | } |
d192d11f | 742 | #else |
4b315324 | 743 | /* ignore range header in non-GETs */ |
744 | if (request->method == METHOD_GET) { | |
745 | request->range = httpHeaderGetRange(req_hdr); | |
746 | if (request->range) | |
747 | EBIT_SET(request->flags, REQ_RANGE); | |
748 | } | |
d192d11f | 749 | #endif |
99edd1c3 | 750 | if (httpHeaderHas(req_hdr, HDR_AUTHORIZATION)) |
79a15e0a | 751 | EBIT_SET(request->flags, REQ_AUTH); |
7a2f978b | 752 | if (request->login[0] != '\0') |
79a15e0a | 753 | EBIT_SET(request->flags, REQ_AUTH); |
99edd1c3 | 754 | #if OLD_CODE |
ea285003 | 755 | if ((t = httpHeaderGetStr(req_hdr, HDR_PROXY_CONNECTION))) { |
7a2f978b | 756 | if (!strcasecmp(t, "Keep-Alive")) |
79a15e0a | 757 | EBIT_SET(request->flags, REQ_PROXY_KEEPALIVE); |
7a2f978b | 758 | } |
99edd1c3 | 759 | #else |
760 | if (httpMsgIsPersistent(request->http_ver, req_hdr)) | |
761 | EBIT_SET(request->flags, REQ_PROXY_KEEPALIVE); | |
762 | #endif | |
763 | if (httpHeaderHas(req_hdr, HDR_VIA)) { | |
764 | String s = httpHeaderGetList(req_hdr, HDR_VIA); | |
edf3ffdc | 765 | /* ThisCache cannot be a member of Via header, "1.0 ThisCache" can */ |
766 | if (strListIsSubstr(&s, ThisCache, ',')) { | |
9330543e | 767 | debug(33, 1) ("WARNING: Forwarding loop detected for '%s'\n", |
768 | http->uri); | |
769 | debug(33, 1) ("--> %s\n", strBuf(s)); | |
79a15e0a | 770 | EBIT_SET(request->flags, REQ_LOOPDETECT); |
7a2f978b | 771 | } |
d21f1c54 | 772 | #if FORW_VIA_DB |
ea285003 | 773 | fvdbCountVia(strBuf(s)); |
d21f1c54 | 774 | #endif |
99edd1c3 | 775 | stringClean(&s); |
d21f1c54 | 776 | } |
7a2f978b | 777 | #if USE_USERAGENT_LOG |
99edd1c3 | 778 | if ((str = httpHeaderGetStr(req_hdr, HDR_USER_AGENT))) |
779 | logUserAgent(fqdnFromAddr(http->conn->peer.sin_addr), str); | |
d21f1c54 | 780 | #endif |
781 | #if FORW_VIA_DB | |
99edd1c3 | 782 | if (httpHeaderHas(req_hdr, HDR_X_FORWARDED_FOR)) { |
783 | String s = httpHeaderGetList(req_hdr, HDR_X_FORWARDED_FOR); | |
784 | fvdbCountForw(strBuf(s)); | |
785 | stringClean(&s); | |
786 | } | |
7a2f978b | 787 | #endif |
99edd1c3 | 788 | #if OLD_CODE |
4e41e277 | 789 | if ((t = mime_get_header_field(request_hdr, "Cache-control", "max-age="))) { |
790 | request->max_age = atoi(t + 8); | |
791 | } else { | |
792 | request->max_age = -1; | |
793 | } | |
794 | if ((t = mime_get_header_field(request_hdr, "Cache-control", "only-if-cached"))) { | |
795 | EBIT_SET(request->flags, REQ_CC_ONLY_IF_CACHED); | |
7a2f978b | 796 | } |
99edd1c3 | 797 | #else |
798 | request->cache_control = httpHeaderGetCc(req_hdr); | |
799 | #endif | |
7a2f978b | 800 | if (request->method == METHOD_TRACE) { |
99edd1c3 | 801 | #if OLD_CODE |
7a2f978b | 802 | if ((t = mime_get_header(request_hdr, "Max-Forwards"))) |
803 | request->max_forwards = atoi(t); | |
99edd1c3 | 804 | #else |
805 | request->max_forwards = httpHeaderGetInt(req_hdr, HDR_MAX_FORWARDS); | |
806 | #endif | |
7a2f978b | 807 | } |
50ddd7a4 | 808 | if (clientCachable(http)) |
809 | EBIT_SET(request->flags, REQ_CACHABLE); | |
810 | if (clientHierarchical(http)) | |
811 | EBIT_SET(request->flags, REQ_HIERARCHICAL); | |
99edd1c3 | 812 | debug(33, 5) ("clientInterpretRequestHeaders: REQ_NOCACHE = %s\n", |
50ddd7a4 | 813 | EBIT_TEST(request->flags, REQ_NOCACHE) ? "SET" : "NOT SET"); |
99edd1c3 | 814 | debug(33, 5) ("clientInterpretRequestHeaders: REQ_CACHABLE = %s\n", |
50ddd7a4 | 815 | EBIT_TEST(request->flags, REQ_CACHABLE) ? "SET" : "NOT SET"); |
99edd1c3 | 816 | debug(33, 5) ("clientInterpretRequestHeaders: REQ_HIERARCHICAL = %s\n", |
50ddd7a4 | 817 | EBIT_TEST(request->flags, REQ_HIERARCHICAL) ? "SET" : "NOT SET"); |
7a2f978b | 818 | } |
819 | ||
31be8b80 | 820 | static int |
efb9218c | 821 | clientCheckContentLength(request_t * r) |
31be8b80 | 822 | { |
205080e2 | 823 | /* We only require a content-length for "upload" methods */ |
824 | if (!pumpMethod(r->method)) | |
825 | return 1; | |
826 | if (httpHeaderGetInt(&r->header, HDR_CONTENT_LENGTH) < 0) | |
31be8b80 | 827 | return 0; |
828 | return 1; | |
829 | } | |
830 | ||
7a2f978b | 831 | static int |
50ddd7a4 | 832 | clientCachable(clientHttpRequest * http) |
7a2f978b | 833 | { |
23d92c64 | 834 | const char *url = http->uri; |
7a2f978b | 835 | request_t *req = http->request; |
836 | method_t method = req->method; | |
bd05e3e3 | 837 | aclCheck_t ch; |
838 | memset(&ch, '\0', sizeof(ch)); | |
839 | /* | |
840 | * Hopefully, nobody really wants 'no_cache' by client's IP | |
841 | * address, but if they do, this should work if they use IP | |
842 | * addresses in their ACLs, or if the client's address is in | |
843 | * the FQDN cache. | |
844 | * | |
845 | * This may not work yet for 'dst' and 'dst_domain' ACLs. | |
846 | */ | |
847 | ch.src_addr = http->conn->peer.sin_addr; | |
848 | ch.request = http->request; | |
79a51871 | 849 | /* |
850 | * aclCheckFast returns 1 for ALLOW and 0 for DENY. The default | |
851 | * is ALLOW, so we require 'no_cache DENY foo' in squid.conf | |
852 | * to indicate uncachable objects. | |
853 | */ | |
95291419 | 854 | if (!aclCheckFast(Config.accessList.noCache, &ch)) |
4b4cd312 | 855 | return 0; |
7a2f978b | 856 | if (req->protocol == PROTO_HTTP) |
857 | return httpCachable(method); | |
858 | /* FTP is always cachable */ | |
859 | if (req->protocol == PROTO_GOPHER) | |
860 | return gopherCachable(url); | |
861 | if (req->protocol == PROTO_WAIS) | |
862 | return 0; | |
863 | if (method == METHOD_CONNECT) | |
864 | return 0; | |
865 | if (method == METHOD_TRACE) | |
866 | return 0; | |
867 | if (req->protocol == PROTO_CACHEOBJ) | |
868 | return 0; | |
869 | return 1; | |
870 | } | |
871 | ||
872 | /* Return true if we can query our neighbors for this object */ | |
873 | static int | |
50ddd7a4 | 874 | clientHierarchical(clientHttpRequest * http) |
7a2f978b | 875 | { |
23d92c64 | 876 | const char *url = http->uri; |
7a2f978b | 877 | request_t *request = http->request; |
878 | method_t method = request->method; | |
879 | const wordlist *p = NULL; | |
880 | ||
881 | /* IMS needs a private key, so we can use the hierarchy for IMS only | |
882 | * if our neighbors support private keys */ | |
79a15e0a | 883 | if (EBIT_TEST(request->flags, REQ_IMS) && !neighbors_do_private_keys) |
7a2f978b | 884 | return 0; |
79a15e0a | 885 | if (EBIT_TEST(request->flags, REQ_AUTH)) |
7a2f978b | 886 | return 0; |
887 | if (method == METHOD_TRACE) | |
888 | return 1; | |
889 | if (method != METHOD_GET) | |
890 | return 0; | |
891 | /* scan hierarchy_stoplist */ | |
892 | for (p = Config.hierarchy_stoplist; p; p = p->next) | |
893 | if (strstr(url, p->key)) | |
894 | return 0; | |
79a15e0a | 895 | if (EBIT_TEST(request->flags, REQ_LOOPDETECT)) |
7a2f978b | 896 | return 0; |
897 | if (request->protocol == PROTO_HTTP) | |
898 | return httpCachable(method); | |
899 | if (request->protocol == PROTO_GOPHER) | |
900 | return gopherCachable(url); | |
901 | if (request->protocol == PROTO_WAIS) | |
902 | return 0; | |
903 | if (request->protocol == PROTO_CACHEOBJ) | |
904 | return 0; | |
905 | return 1; | |
906 | } | |
907 | ||
cf50a0af | 908 | int |
7a2f978b | 909 | isTcpHit(log_type code) |
910 | { | |
911 | /* this should be a bitmap for better optimization */ | |
912 | if (code == LOG_TCP_HIT) | |
913 | return 1; | |
914 | if (code == LOG_TCP_IMS_HIT) | |
915 | return 1; | |
916 | if (code == LOG_TCP_REFRESH_FAIL_HIT) | |
917 | return 1; | |
918 | if (code == LOG_TCP_REFRESH_HIT) | |
919 | return 1; | |
920 | if (code == LOG_TCP_NEGATIVE_HIT) | |
921 | return 1; | |
922 | if (code == LOG_TCP_MEM_HIT) | |
923 | return 1; | |
924 | return 0; | |
925 | } | |
926 | ||
a9771e51 | 927 | /* returns true if If-Range specs match reply, false otherwise */ |
928 | static int | |
929 | clientIfRangeMatch(clientHttpRequest * http, HttpReply * rep) | |
930 | { | |
931 | const TimeOrTag spec = httpHeaderGetTimeOrTag(&http->request->header, HDR_IF_RANGE); | |
932 | /* check for parsing falure */ | |
933 | if (!spec.valid) | |
934 | return 0; | |
935 | /* got an ETag? */ | |
936 | if (spec.tag.str) { | |
937 | ETag rep_tag = httpHeaderGetETag(&rep->header, HDR_ETAG); | |
ebb6e9a0 | 938 | debug(33, 3) ("clientIfRangeMatch: ETags: %s and %s\n", |
a9771e51 | 939 | spec.tag.str, rep_tag.str ? rep_tag.str : "<none>"); |
940 | if (!rep_tag.str) | |
ebb6e9a0 | 941 | return 0; /* entity has no etag to compare with! */ |
a9771e51 | 942 | if (spec.tag.weak || rep_tag.weak) { |
ebb6e9a0 | 943 | debug(33, 1) ("clientIfRangeMatch: Weak ETags are not in If-Range: %s ? %s\n", |
a9771e51 | 944 | spec.tag.str, rep_tag.str); |
ebb6e9a0 | 945 | return 0; /* must use strong validator for sub-range requests */ |
a9771e51 | 946 | } |
947 | return etagIsEqual(&rep_tag, &spec.tag); | |
948 | } | |
949 | /* got modification time? */ | |
950 | if (spec.time >= 0) { | |
951 | return http->entry->lastmod <= spec.time; | |
952 | } | |
ebb6e9a0 | 953 | assert(0); /* should not happen */ |
a9771e51 | 954 | return 0; |
955 | } | |
956 | ||
e17d81d3 | 957 | /* adds appropriate Range headers if needed */ |
958 | static void | |
959 | clientBuildRangeHeader(clientHttpRequest * http, HttpReply * rep) | |
960 | { | |
961 | HttpHeader *hdr = &rep->header; | |
962 | const char *range_err = NULL; | |
963 | assert(http->request->range); | |
964 | /* check if we still want to do ranges */ | |
965 | if (rep->sline.status != HTTP_OK) | |
966 | range_err = "wrong status code"; | |
ebb6e9a0 | 967 | else if (httpHeaderHas(hdr, HDR_CONTENT_RANGE)) |
e17d81d3 | 968 | range_err = "origin server does ranges"; |
ebb6e9a0 | 969 | else if (rep->content_length < 0) |
e17d81d3 | 970 | range_err = "unknown length"; |
ebb6e9a0 | 971 | else if (rep->content_length != http->entry->mem_obj->reply->content_length) |
972 | range_err = "INCONSISTENT length"; /* a bug? */ | |
973 | else if (httpHeaderHas(&http->request->header, HDR_IF_RANGE) && !clientIfRangeMatch(http, rep)) | |
a9771e51 | 974 | range_err = "If-Range match failed"; |
ebb6e9a0 | 975 | else if (!httpHdrRangeCanonize(http->request->range, rep->content_length)) |
e17d81d3 | 976 | range_err = "canonization failed"; |
ebb6e9a0 | 977 | else if (httpHdrRangeIsComplex(http->request->range)) |
e17d81d3 | 978 | range_err = "too complex range header"; |
979 | /* get rid of our range specs on error */ | |
980 | if (range_err) { | |
cdedf7db | 981 | debug(33, 2) ("clientBuildRangeHeader: will not do ranges: %s.\n", range_err); |
e17d81d3 | 982 | httpHdrRangeDestroy(http->request->range); |
983 | http->request->range = NULL; | |
984 | } else { | |
985 | const int spec_count = http->request->range->specs.count; | |
cdedf7db | 986 | debug(33, 2) ("clientBuildRangeHeader: range spec count: %d clen: %d\n", |
e17d81d3 | 987 | spec_count, rep->content_length); |
988 | assert(spec_count > 0); | |
a9771e51 | 989 | /* ETags should not be returned with Partial Content replies? */ |
990 | httpHeaderDelById(hdr, HDR_ETAG); | |
ebb6e9a0 | 991 | /* append appropriate header(s) */ |
e17d81d3 | 992 | if (spec_count == 1) { |
993 | HttpHdrRangePos pos = HttpHdrRangeInitPos; | |
889b534a | 994 | const HttpHdrRangeSpec *spec = httpHdrRangeGetSpec(http->request->range, &pos); |
995 | assert(spec); | |
e17d81d3 | 996 | /* append Content-Range */ |
889b534a | 997 | httpHeaderAddContRange(hdr, *spec, rep->content_length); |
e17d81d3 | 998 | /* set new Content-Length to the actual number of OCTETs |
999 | * transmitted in the message-body */ | |
1000 | httpHeaderDelById(hdr, HDR_CONTENT_LENGTH); | |
889b534a | 1001 | httpHeaderPutInt(hdr, HDR_CONTENT_LENGTH, spec->length); |
1002 | debug(33, 2) ("clientBuildRangeHeader: actual content length: %d\n", spec->length); | |
e17d81d3 | 1003 | } else { |
1004 | /* multipart! */ | |
1005 | /* generate boundary string */ | |
1006 | http->range_iter.boundary = httpHdrRangeBoundaryStr(http); | |
1007 | /* delete old Content-Type, add ours */ | |
1008 | httpHeaderDelById(hdr, HDR_CONTENT_TYPE); | |
1009 | httpHeaderPutStrf(hdr, HDR_CONTENT_TYPE, | |
1010 | "multipart/byteranges; boundary=\"%s\"", | |
1011 | strBuf(http->range_iter.boundary)); | |
1012 | /* no need for Content-Length in multipart responses */ | |
cded937d | 1013 | /* but we must delete the original one if we cannot (yet) |
1014 | * calculate the actual length */ | |
1015 | httpHeaderDelById(hdr, HDR_CONTENT_LENGTH); | |
e17d81d3 | 1016 | } |
1017 | } | |
1018 | } | |
1019 | ||
d192d11f | 1020 | /* filters out unwanted entries from original reply header |
1021 | * adds extra entries if we have more info than origin server | |
1022 | * adds Squid specific entries */ | |
2246b732 | 1023 | static void |
eeb423fb | 1024 | clientBuildReplyHeader(clientHttpRequest * http, HttpReply * rep) |
2246b732 | 1025 | { |
1026 | HttpHeader *hdr = &rep->header; | |
1027 | int is_hit = isTcpHit(http->log_type); | |
7673173d | 1028 | request_t *request = http->request; |
2246b732 | 1029 | #if DONT_FILTER_THESE |
1030 | /* but you might want to if you run Squid as an HTTP accelerator */ | |
d192d11f | 1031 | /* httpHeaderDelById(hdr, HDR_ACCEPT_RANGES); */ |
2246b732 | 1032 | httpHeaderDelById(hdr, HDR_ETAG); |
1033 | #endif | |
1034 | httpHeaderDelById(hdr, HDR_PROXY_CONNECTION); | |
1035 | /* here: Keep-Alive is a field-name, not a connection directive! */ | |
1036 | httpHeaderDelByName(hdr, "Keep-Alive"); | |
1037 | /* remove Set-Cookie if a hit */ | |
1038 | if (is_hit) | |
1039 | httpHeaderDelById(hdr, HDR_SET_COOKIE); | |
1040 | /* handle Connection header */ | |
1041 | if (httpHeaderHas(hdr, HDR_CONNECTION)) { | |
1042 | /* anything that matches Connection list member will be deleted */ | |
1043 | String strConnection = httpHeaderGetList(hdr, HDR_CONNECTION); | |
1044 | const HttpHeaderEntry *e; | |
1045 | HttpHeaderPos pos = HttpHeaderInitPos; | |
7673173d | 1046 | /* |
1047 | * think: on-average-best nesting of the two loops (hdrEntry | |
1048 | * and strListItem) @?@ | |
1049 | */ | |
1050 | /* | |
1051 | * maybe we should delete standard stuff ("keep-alive","close") | |
1052 | * from strConnection first? | |
1053 | */ | |
2246b732 | 1054 | while ((e = httpHeaderGetEntry(hdr, &pos))) { |
1055 | if (strListIsMember(&strConnection, strBuf(e->name), ',')) | |
1056 | httpHeaderDelAt(hdr, pos); | |
1057 | } | |
1058 | httpHeaderDelById(hdr, HDR_CONNECTION); | |
1059 | stringClean(&strConnection); | |
1060 | } | |
d192d11f | 1061 | /* Handle Ranges */ |
7673173d | 1062 | if (request->range) |
e17d81d3 | 1063 | clientBuildRangeHeader(http, rep); |
7673173d | 1064 | /* |
1065 | * Add Age header, not that our header must replace Age headers | |
1066 | * from other caches if any | |
1067 | */ | |
cc66f616 | 1068 | if (http->entry->timestamp > 0) { |
1069 | httpHeaderDelById(hdr, HDR_AGE); | |
7673173d | 1070 | /* |
1071 | * we do not follow HTTP/1.1 precisely here becuase we rely | |
1072 | * on Date header when computing entry->timestamp; we should | |
1073 | * be using _request_ time if Date header is not available | |
1074 | * or if it is out of sync | |
1075 | */ | |
cc66f616 | 1076 | httpHeaderPutInt(hdr, HDR_AGE, |
7673173d | 1077 | http->entry->timestamp <= squid_curtime ? |
1078 | squid_curtime - http->entry->timestamp : 0); | |
cc66f616 | 1079 | } |
2246b732 | 1080 | /* Append X-Cache */ |
1081 | httpHeaderPutStrf(hdr, HDR_X_CACHE, "%s from %s", | |
1082 | is_hit ? "HIT" : "MISS", getMyHostname()); | |
1083 | #if USE_CACHE_DIGESTS | |
1084 | /* Append X-Cache-Lookup: -- temporary hack, to be removed @?@ @?@ */ | |
1085 | httpHeaderPutStrf(hdr, HDR_X_CACHE_LOOKUP, "%s from %s:%d", | |
1086 | http->lookup_type ? http->lookup_type : "NONE", | |
1087 | getMyHostname(), Config.Port.http->i); | |
1088 | #endif | |
1089 | /* Only replies with valid Content-Length can be sent with keep-alive */ | |
7673173d | 1090 | if (request->method != METHOD_HEAD && |
2246b732 | 1091 | http->entry->mem_obj->reply->content_length < 0) |
7673173d | 1092 | EBIT_CLR(request->flags, REQ_PROXY_KEEPALIVE); |
2246b732 | 1093 | /* Signal keep-alive if needed */ |
7673173d | 1094 | httpHeaderPutStr(hdr, |
1095 | http->flags.accel ? HDR_CONNECTION : HDR_PROXY_CONNECTION, | |
1096 | EBIT_TEST(request->flags, REQ_PROXY_KEEPALIVE) ? "keep-alive" : "close"); | |
d192d11f | 1097 | /* Accept-Range header for cached objects if not there already */ |
1098 | if (is_hit && !httpHeaderHas(hdr, HDR_ACCEPT_RANGES)) | |
1099 | httpHeaderPutStr(hdr, HDR_ACCEPT_RANGES, "bytes"); | |
2246b732 | 1100 | #if ADD_X_REQUEST_URI |
1101 | /* | |
1102 | * Knowing the URI of the request is useful when debugging persistent | |
1103 | * connections in a client; we cannot guarantee the order of http headers, | |
1104 | * but X-Request-URI is likely to be the very last header to ease use from a | |
1105 | * debugger [hdr->entries.count-1]. | |
1106 | */ | |
eeb423fb | 1107 | httpHeaderPutStr(hdr, HDR_X_REQUEST_URI, |
2246b732 | 1108 | http->entry->mem_obj->url ? http->entry->mem_obj->url : http->uri); |
1109 | #endif | |
1110 | } | |
1111 | ||
eeb423fb | 1112 | static HttpReply * |
2246b732 | 1113 | clientBuildReply(clientHttpRequest * http, const char *buf, size_t size) |
1114 | { | |
1115 | HttpReply *rep = httpReplyCreate(); | |
eeb423fb | 1116 | assert(size <= 4096); /* httpReplyParse depends on this */ |
2246b732 | 1117 | if (httpReplyParse(rep, buf)) { |
1118 | /* enforce 1.0 reply version */ | |
1119 | rep->sline.version = 1.0; | |
1120 | /* do header conversions */ | |
1121 | clientBuildReplyHeader(http, rep); | |
d192d11f | 1122 | /* if we do ranges, change status to "Partial Content" */ |
1123 | if (http->request->range) | |
1124 | httpStatusLineSet(&rep->sline, rep->sline.version, HTTP_PARTIAL_CONTENT, NULL); | |
2246b732 | 1125 | } else { |
1126 | /* parsing failure, get rid of the invalid reply */ | |
1127 | httpReplyDestroy(rep); | |
1128 | rep = NULL; | |
1129 | } | |
1130 | return rep; | |
1131 | } | |
7a2f978b | 1132 | |
85071fe3 | 1133 | /* |
1134 | * clientCacheHit should only be called until the HTTP reply headers | |
1135 | * have been parsed. Normally this should be a single call, but | |
1136 | * it might take more than one. As soon as we have the headers, | |
1137 | * we hand off to clientSendMoreData, clientProcessExpired, or | |
1138 | * clientProcessMiss. | |
1139 | */ | |
4c323c5f | 1140 | static void |
7a2f978b | 1141 | clientCacheHit(void *data, char *buf, ssize_t size) |
1142 | { | |
1143 | clientHttpRequest *http = data; | |
49d3fcb0 | 1144 | StoreEntry *e = http->entry; |
1145 | MemObject *mem; | |
1146 | request_t *r = http->request; | |
93f9abd0 | 1147 | debug(33, 3) ("clientCacheHit: %s, %d bytes\n", http->uri, (int) size); |
49d3fcb0 | 1148 | if (http->entry == NULL) { |
1149 | memFree(MEM_4K_BUF, buf); | |
93f9abd0 | 1150 | debug(33, 3) ("clientCacheHit: request aborted\n"); |
49d3fcb0 | 1151 | return; |
1152 | } else if (size < 0) { | |
7a2f978b | 1153 | /* swap in failure */ |
49d3fcb0 | 1154 | memFree(MEM_4K_BUF, buf); |
93f9abd0 | 1155 | debug(33, 3) ("clientCacheHit: swapin failure for %s\n", http->uri); |
7a2f978b | 1156 | http->log_type = LOG_TCP_SWAPFAIL_MISS; |
fdfc0d63 | 1157 | if ((e = http->entry)) { |
1158 | http->entry = NULL; | |
1159 | storeUnregister(e, http); | |
fdfc0d63 | 1160 | storeUnlockObject(e); |
1161 | } | |
fb63215a | 1162 | clientProcessMiss(http); |
49d3fcb0 | 1163 | return; |
1164 | } | |
1165 | assert(size > 0); | |
1166 | mem = e->mem_obj; | |
1167 | assert(e->store_status != STORE_ABORTED); | |
1168 | if (mem->reply->sline.status == 0) { | |
1169 | /* | |
1170 | * we don't have full reply headers yet; either wait for more or | |
1171 | * punt to clientProcessMiss. | |
1172 | */ | |
1173 | if (e->mem_status == IN_MEMORY) { | |
1174 | clientProcessMiss(http); | |
1175 | } else if (size == SM_PAGE_SIZE && http->out.offset == 0) { | |
1176 | clientProcessMiss(http); | |
1177 | } else { | |
1178 | debug(33, 3) ("clientCacheHit: waiting for HTTP reply headers\n"); | |
1179 | storeClientCopy(e, | |
1180 | http->out.offset + size, | |
1181 | http->out.offset, | |
1182 | SM_PAGE_SIZE, | |
1183 | buf, | |
1184 | clientCacheHit, | |
1185 | http); | |
1186 | } | |
1187 | return; | |
1188 | } | |
1189 | /* | |
1190 | * Got the headers, now grok them | |
1191 | */ | |
1192 | assert(http->log_type == LOG_TCP_HIT); | |
1193 | if (checkNegativeHit(e)) { | |
1194 | http->log_type = LOG_TCP_NEGATIVE_HIT; | |
1195 | clientSendMoreData(data, buf, size); | |
1196 | } else if (refreshCheck(e, r, 0)) { | |
1197 | /* | |
1198 | * We hold a stale copy; it needs to be validated | |
1199 | */ | |
1200 | if (r->protocol == PROTO_HTTP) { | |
1201 | http->log_type = LOG_TCP_REFRESH_MISS; | |
1202 | clientProcessExpired(http); | |
1203 | } else { | |
1204 | http->log_type = LOG_TCP_MISS; | |
1205 | clientProcessMiss(http); | |
1206 | } | |
1207 | } else if (EBIT_TEST(r->flags, REQ_IMS)) { | |
1208 | /* | |
1209 | * Handle If-Modified-Since requests from the client | |
1210 | */ | |
1211 | if (mem->reply->sline.status != HTTP_OK) { | |
1212 | debug(33, 4) ("clientCacheHit: Reply code %d != 200\n", | |
1213 | mem->reply->sline.status); | |
1214 | clientProcessMiss(http); | |
1215 | } else if (modifiedSince(e, http->request)) { | |
1216 | http->log_type = LOG_TCP_IMS_MISS; | |
1217 | clientSendMoreData(data, buf, size); | |
1218 | } else { | |
1219 | MemBuf mb = httpPacked304Reply(e->mem_obj->reply); | |
1220 | http->log_type = LOG_TCP_IMS_HIT; | |
1221 | storeUnregister(e, http); | |
1222 | storeUnlockObject(e); | |
1223 | e = clientCreateStoreEntry(http, http->request->method, 0); | |
1224 | http->entry = e; | |
1225 | httpReplyParse(e->mem_obj->reply, mb.buf); | |
1226 | storeAppend(e, mb.buf, mb.size); | |
1227 | memBufClean(&mb); | |
1228 | storeComplete(e); | |
1229 | } | |
1230 | } else { | |
1231 | /* | |
1232 | * plain ol' cache hit | |
1233 | */ | |
1234 | if (e->mem_status == IN_MEMORY) | |
1235 | http->log_type = LOG_TCP_MEM_HIT; | |
1236 | clientSendMoreData(data, buf, size); | |
7a2f978b | 1237 | } |
1238 | } | |
1239 | ||
d192d11f | 1240 | |
1241 | /* extracts a "range" from *buf and appends them to mb, updating all offsets and such */ | |
1242 | static void | |
ebb6e9a0 | 1243 | clientPackRange(clientHttpRequest * http, HttpHdrRangeIter * i, const char **buf, ssize_t * size, MemBuf * mb) |
d192d11f | 1244 | { |
1245 | const size_t copy_sz = i->debt_size <= *size ? i->debt_size : *size; | |
1246 | off_t body_off = http->out.offset - i->prefix_size; | |
1247 | assert(*size > 0); | |
889b534a | 1248 | assert(i->spec); |
d192d11f | 1249 | /* intersection of "have" and "need" ranges must not be empty */ |
889b534a | 1250 | assert(body_off < i->spec->offset + i->spec->length); |
1251 | assert(body_off + *size > i->spec->offset); | |
d192d11f | 1252 | /* put boundary and headers at the beginning of range in a multi-range */ |
889b534a | 1253 | if (http->request->range->specs.count > 1 && i->debt_size == i->spec->length) { |
ebb6e9a0 | 1254 | HttpReply *rep = http->entry->mem_obj ? /* original reply */ |
1255 | http->entry->mem_obj->reply : NULL; | |
d192d11f | 1256 | HttpHeader hdr; |
1257 | Packer p; | |
1258 | assert(rep); | |
1259 | /* put boundary */ | |
cdedf7db | 1260 | debug(33, 5) ("clientPackRange: appending boundary: %s\n", strBuf(i->boundary)); |
d192d11f | 1261 | /* rfc2046 requires to _prepend_ boundary with <crlf>! */ |
1262 | memBufPrintf(mb, "\r\n--%s\r\n", strBuf(i->boundary)); | |
1263 | httpHeaderInit(&hdr, hoReply); | |
1264 | if (httpHeaderHas(&rep->header, HDR_CONTENT_TYPE)) | |
1265 | httpHeaderPutStr(&hdr, HDR_CONTENT_TYPE, httpHeaderGetStr(&rep->header, HDR_CONTENT_TYPE)); | |
889b534a | 1266 | httpHeaderAddContRange(&hdr, *i->spec, rep->content_length); |
d192d11f | 1267 | packerToMemInit(&p, mb); |
1268 | httpHeaderPackInto(&hdr, &p); | |
1269 | packerClean(&p); | |
1270 | httpHeaderClean(&hdr); | |
1271 | /* append <crlf> (we packed a header, not a reply */ | |
1272 | memBufPrintf(mb, "\r\n"); | |
1273 | } | |
1274 | /* append */ | |
cdedf7db | 1275 | debug(33, 3) ("clientPackRange: appending %d bytes\n", copy_sz); |
d192d11f | 1276 | memBufAppend(mb, *buf, copy_sz); |
1277 | /* update offsets */ | |
1278 | *size -= copy_sz; | |
1279 | i->debt_size -= copy_sz; | |
1280 | body_off += copy_sz; | |
1281 | *buf += copy_sz; | |
ebb6e9a0 | 1282 | http->out.offset = body_off + i->prefix_size; /* sync */ |
d192d11f | 1283 | /* paranoid check */ |
1284 | assert(*size >= 0 && i->debt_size >= 0); | |
1285 | } | |
1286 | ||
889b534a | 1287 | /* returns true if there is still data available to pack more ranges |
1288 | * increments iterator "i" | |
1289 | * used by clientPackMoreRanges */ | |
1290 | static int | |
ebb6e9a0 | 1291 | clientCanPackMoreRanges(const clientHttpRequest * http, HttpHdrRangeIter * i, ssize_t size) |
889b534a | 1292 | { |
1293 | /* first update "i" if needed */ | |
1294 | if (!i->debt_size) { | |
1295 | if ((i->spec = httpHdrRangeGetSpec(http->request->range, &i->pos))) | |
1296 | i->debt_size = i->spec->length; | |
1297 | } | |
ebb6e9a0 | 1298 | assert(!i->debt_size == !i->spec); /* paranoid sync condition */ |
889b534a | 1299 | /* continue condition: need_more_data && have_more_data */ |
1300 | return i->spec && size > 0; | |
1301 | } | |
d192d11f | 1302 | |
1303 | /* extracts "ranges" from buf and appends them to mb, updating all offsets and such */ | |
1304 | /* returns true if we need more data */ | |
1305 | static int | |
ebb6e9a0 | 1306 | clientPackMoreRanges(clientHttpRequest * http, const char *buf, ssize_t size, MemBuf * mb) |
d192d11f | 1307 | { |
1308 | HttpHdrRangeIter *i = &http->range_iter; | |
d192d11f | 1309 | /* offset in range specs does not count the prefix of an http msg */ |
1310 | off_t body_off = http->out.offset - i->prefix_size; | |
1311 | assert(size >= 0); | |
1312 | /* filter out data according to range specs */ | |
1313 | /* note: order of loop conditions is significant! */ | |
889b534a | 1314 | while (clientCanPackMoreRanges(http, i, size)) { |
ebb6e9a0 | 1315 | off_t start; /* offset of still missing data */ |
889b534a | 1316 | assert(i->spec); |
1317 | start = i->spec->offset + i->spec->length - i->debt_size; | |
cdedf7db | 1318 | debug(33, 2) ("clientPackMoreRanges: in: offset: %d size: %d\n", |
ebb6e9a0 | 1319 | (int) body_off, size); |
cdedf7db | 1320 | debug(33, 2) ("clientPackMoreRanges: out: start: %d spec[%d]: [%d, %d), len: %d debt: %d\n", |
ebb6e9a0 | 1321 | (int) start, (int) i->pos, i->spec->offset, (int) (i->spec->offset + i->spec->length), i->spec->length, i->debt_size); |
1322 | assert(body_off <= start); /* we did not miss it */ | |
d192d11f | 1323 | /* skip up to start */ |
1324 | if (body_off + size > start) { | |
1325 | const size_t skip_size = start - body_off; | |
1326 | body_off = start; | |
1327 | size -= skip_size; | |
1328 | buf += skip_size; | |
1329 | } else { | |
1330 | /* has not reached start yet */ | |
1331 | body_off += size; | |
1332 | size = 0; | |
1333 | buf = NULL; | |
1334 | } | |
1335 | /* put next chunk if any */ | |
1336 | if (size) { | |
ebb6e9a0 | 1337 | http->out.offset = body_off + i->prefix_size; /* sync */ |
d192d11f | 1338 | clientPackRange(http, i, &buf, &size, mb); |
ebb6e9a0 | 1339 | body_off = http->out.offset - i->prefix_size; /* sync */ |
d192d11f | 1340 | } |
1341 | } | |
ebb6e9a0 | 1342 | assert(!i->debt_size == !i->spec); /* paranoid sync condition */ |
cdedf7db | 1343 | debug(33, 2) ("clientPackMoreRanges: buf exhausted: in: offset: %d size: %d need_more: %d\n", |
ebb6e9a0 | 1344 | (int) body_off, size, i->debt_size); |
889b534a | 1345 | if (i->debt_size) { |
1346 | debug(33, 2) ("clientPackMoreRanges: need more: spec[%d]: [%d, %d), len: %d\n", | |
ebb6e9a0 | 1347 | (int) i->pos, i->spec->offset, (int) (i->spec->offset + i->spec->length), i->spec->length); |
889b534a | 1348 | /* skip the data we do not need if possible */ |
ebb6e9a0 | 1349 | if (i->debt_size == i->spec->length) /* at the start of the cur. spec */ |
889b534a | 1350 | body_off = i->spec->offset; |
d192d11f | 1351 | else |
889b534a | 1352 | assert(body_off == i->spec->offset + i->spec->length - i->debt_size); |
ebb6e9a0 | 1353 | } else if (http->request->range->specs.count > 1) { |
d192d11f | 1354 | /* put terminating boundary for multiparts */ |
1355 | memBufPrintf(mb, "\r\n--%s--\r\n", strBuf(i->boundary)); | |
1356 | } | |
ebb6e9a0 | 1357 | http->out.offset = body_off + i->prefix_size; /* sync */ |
889b534a | 1358 | return i->debt_size > 0; |
d192d11f | 1359 | } |
1360 | ||
2246b732 | 1361 | /* |
1362 | * accepts chunk of a http message in buf, parses prefix, filters headers and | |
1363 | * such, writes processed message to the client's socket | |
1364 | */ | |
4c323c5f | 1365 | static void |
7a2f978b | 1366 | clientSendMoreData(void *data, char *buf, ssize_t size) |
1367 | { | |
1368 | clientHttpRequest *http = data; | |
1369 | StoreEntry *entry = http->entry; | |
1370 | ConnStateData *conn = http->conn; | |
1371 | int fd = conn->fd; | |
2246b732 | 1372 | HttpReply *rep = NULL; |
2246b732 | 1373 | const char *body_buf = buf; |
1374 | ssize_t body_size = size; | |
9f086470 | 1375 | MemBuf mb; |
bcd3b08a | 1376 | ssize_t check_size = 0; |
93f9abd0 | 1377 | debug(33, 5) ("clientSendMoreData: %s, %d bytes\n", http->uri, (int) size); |
7a2f978b | 1378 | assert(size <= SM_PAGE_SIZE); |
40defb17 | 1379 | assert(http->request != NULL); |
93f9abd0 | 1380 | debug(33, 5) ("clientSendMoreData: FD %d '%s', out.offset=%d \n", |
5f6ac48b | 1381 | fd, storeUrl(entry), (int) http->out.offset); |
7a2f978b | 1382 | if (conn->chr != http) { |
1383 | /* there is another object in progress, defer this one */ | |
a43b3862 | 1384 | debug(0, 0) ("clientSendMoreData: Deferring %s\n", storeUrl(entry)); |
9f086470 | 1385 | memFree4K(buf); |
7a2f978b | 1386 | return; |
fdfc0d63 | 1387 | } else if (entry && entry->store_status == STORE_ABORTED) { |
d6e928c9 | 1388 | /* call clientWriteComplete so the client socket gets closed */ |
1389 | clientWriteComplete(fd, NULL, 0, COMM_OK, http); | |
9f086470 | 1390 | memFree4K(buf); |
7a2f978b | 1391 | return; |
1392 | } else if (size < 0) { | |
d6e928c9 | 1393 | /* call clientWriteComplete so the client socket gets closed */ |
1394 | clientWriteComplete(fd, NULL, 0, COMM_OK, http); | |
9f086470 | 1395 | memFree4K(buf); |
7a2f978b | 1396 | return; |
1397 | } else if (size == 0) { | |
d6e928c9 | 1398 | /* call clientWriteComplete so the client socket gets closed */ |
1399 | clientWriteComplete(fd, NULL, 0, COMM_OK, http); | |
9f086470 | 1400 | memFree4K(buf); |
7a2f978b | 1401 | return; |
1402 | } | |
40defb17 | 1403 | if (http->out.offset == 0) { |
7a2f978b | 1404 | if (Config.onoff.log_mime_hdrs) { |
2334c194 | 1405 | size_t k; |
1406 | if ((k = headersEnd(buf, size))) { | |
7a2f978b | 1407 | safe_free(http->al.headers.reply); |
1afe05c5 | 1408 | http->al.headers.reply = xcalloc(k + 1, 1); |
2334c194 | 1409 | xstrncpy(http->al.headers.reply, buf, k); |
7a2f978b | 1410 | } |
1411 | } | |
2246b732 | 1412 | rep = clientBuildReply(http, buf, size); |
1413 | if (rep) { | |
1414 | body_size = size - rep->hdr_sz; | |
1415 | assert(body_size >= 0); | |
1f7e91a1 | 1416 | body_buf = buf + rep->hdr_sz; |
d192d11f | 1417 | http->range_iter.prefix_size = rep->hdr_sz; |
2246b732 | 1418 | debug(33, 3) ("clientSendMoreData: Appending %d bytes after %d bytes of headers\n", |
1419 | body_size, rep->hdr_sz); | |
9f086470 | 1420 | } else if (size < SM_PAGE_SIZE && entry->store_status == STORE_PENDING) { |
1421 | /* wait for more to arrive */ | |
1422 | storeClientCopy(entry, | |
1423 | http->out.offset + size, | |
1424 | http->out.offset, | |
1425 | SM_PAGE_SIZE, | |
1426 | buf, | |
1427 | clientSendMoreData, | |
1428 | http); | |
1429 | return; | |
7a2f978b | 1430 | } |
d192d11f | 1431 | /* reset range iterator */ |
1432 | http->range_iter.pos = HttpHdrRangeInitPos; | |
7a2f978b | 1433 | } |
7a2f978b | 1434 | if (http->request->method == METHOD_HEAD) { |
9f086470 | 1435 | if (rep) { |
1436 | /* do not forward body for HEAD replies */ | |
1437 | body_size = 0; | |
9f086470 | 1438 | http->flags.done_copying = 1; |
1439 | } else { | |
1440 | /* unparseable reply, stop and end-of-headers */ | |
1441 | body_size = headersEnd(buf, size); | |
1442 | if (body_size) | |
1443 | http->flags.done_copying = 1; | |
7a2f978b | 1444 | } |
1445 | } | |
d192d11f | 1446 | /* write headers and/or body if any */ |
1f7e91a1 | 1447 | assert(rep || (body_buf && body_size)); |
9f086470 | 1448 | /* init mb; put status line and headers if any */ |
1449 | if (rep) { | |
1450 | mb = httpReplyPack(rep); | |
bcd3b08a | 1451 | http->out.offset += rep->hdr_sz; |
1452 | check_size += rep->hdr_sz; | |
9f086470 | 1453 | httpReplyDestroy(rep); |
1454 | rep = NULL; | |
1455 | } else { | |
1456 | /* leave space for growth incase we do ranges */ | |
1457 | memBufInit(&mb, SM_PAGE_SIZE, 2 * SM_PAGE_SIZE); | |
1458 | } | |
1459 | /* append body if any */ | |
1f7e91a1 | 1460 | if (body_buf && body_size) { |
9f086470 | 1461 | if (http->request->range) { |
bcd3b08a | 1462 | /* Only GET requests should have ranges */ |
1463 | assert(http->request->method == METHOD_GET); | |
1464 | /* clientPackMoreRanges() updates http->out.offset */ | |
9f086470 | 1465 | /* force the end of the transfer if we are done */ |
1466 | if (!clientPackMoreRanges(http, body_buf, body_size, &mb)) | |
1467 | http->flags.done_copying = 1; | |
2246b732 | 1468 | } else { |
bcd3b08a | 1469 | http->out.offset += body_size; |
1470 | check_size += body_size; | |
9f086470 | 1471 | memBufAppend(&mb, body_buf, body_size); |
2246b732 | 1472 | } |
2246b732 | 1473 | } |
bcd3b08a | 1474 | if (!http->request->range) |
1475 | assert(check_size == size); | |
9f086470 | 1476 | /* write */ |
1477 | comm_write_mbuf(fd, mb, clientWriteComplete, http); | |
2246b732 | 1478 | /* if we don't do it, who will? */ |
9f086470 | 1479 | memFree4K(buf); |
7a2f978b | 1480 | } |
1481 | ||
1a92a1e2 | 1482 | static |
1483 | void | |
1484 | clientKeepaliveNextRequest(clientHttpRequest * http) | |
1485 | { | |
1486 | ConnStateData *conn = http->conn; | |
1487 | StoreEntry *entry; | |
ebb6e9a0 | 1488 | debug(33, 3) ("clientKeepaliveNextRequest: FD %d\n", conn->fd); |
1a92a1e2 | 1489 | conn->defer.until = 0; /* Kick it to read a new request */ |
1490 | httpRequestFree(http); | |
1491 | if ((http = conn->chr) != NULL) { | |
1492 | debug(33, 1) ("clientKeepaliveNextRequest: FD %d Sending next\n", | |
1493 | conn->fd); | |
1494 | entry = http->entry; | |
1495 | if (0 == storeClientCopyPending(entry, http)) { | |
1496 | if (entry->store_status == STORE_ABORTED) | |
c07aed63 | 1497 | debug(33, 0) ("clientKeepaliveNextRequest: entry->swap_status == STORE_ABORTED\n"); |
1a92a1e2 | 1498 | storeClientCopy(entry, |
1499 | http->out.offset, | |
1500 | http->out.offset, | |
1501 | SM_PAGE_SIZE, | |
1502 | memAllocate(MEM_4K_BUF), | |
1503 | clientSendMoreData, | |
1504 | http); | |
1505 | } | |
1506 | } else { | |
c07aed63 | 1507 | debug(33, 5) ("clientKeepaliveNextRequest: FD %d reading next request\n", |
1a92a1e2 | 1508 | conn->fd); |
1509 | fd_note(conn->fd, "Reading next request"); | |
1510 | /* | |
1511 | * Set the timeout BEFORE calling clientReadRequest(). | |
1512 | */ | |
1513 | commSetTimeout(conn->fd, 15, requestTimeout, conn); | |
1514 | clientReadRequest(conn->fd, conn); /* Read next request */ | |
1515 | /* | |
1516 | * Note, the FD may be closed at this point. | |
1517 | */ | |
1518 | } | |
1519 | } | |
1520 | ||
fc5d6f7f | 1521 | static void |
79a15e0a | 1522 | clientWriteComplete(int fd, char *bufnotused, size_t size, int errflag, void *data) |
7a2f978b | 1523 | { |
1524 | clientHttpRequest *http = data; | |
7a2f978b | 1525 | StoreEntry *entry = http->entry; |
b34ed725 | 1526 | int done; |
7a2f978b | 1527 | http->out.size += size; |
93f9abd0 | 1528 | debug(33, 5) ("clientWriteComplete: FD %d, sz %d, err %d, off %d, len %d\n", |
5f6ac48b | 1529 | fd, size, errflag, (int) http->out.offset, objectLen(entry)); |
d8b83480 | 1530 | if (size > 0) { |
ea285003 | 1531 | kb_incr(&Counter.client_http.kbytes_out, size); |
1532 | if (isTcpHit(http->log_type)) | |
d8b83480 | 1533 | kb_incr(&Counter.client_http.hit_kbytes_out, size); |
1534 | } | |
7a2f978b | 1535 | if (errflag) { |
36547bcf | 1536 | #if DONT_DO_THIS |
1537 | /* | |
1538 | * Not sure why this CheckQuickAbort() would be needed here. | |
1539 | * We also call CheckQuickAbort() in httpRequestFree(), which | |
1540 | * gets called as a comm_close handler. We need to be careful | |
1541 | * that CheckQuickAbort() gets called only ONCE, and AFTER | |
1542 | * storeUnregister() has been called. [DW/1.2.beta18] | |
1543 | */ | |
7a2f978b | 1544 | CheckQuickAbort(http); |
36547bcf | 1545 | #endif |
7a2f978b | 1546 | comm_close(fd); |
fdfc0d63 | 1547 | } else if (NULL == entry) { |
1548 | comm_close(fd); /* yuk */ | |
7a2f978b | 1549 | } else if (entry->store_status == STORE_ABORTED) { |
7a2f978b | 1550 | comm_close(fd); |
a200bbd2 | 1551 | } else if ((done = clientCheckTransferDone(http)) != 0 || size == 0) { |
93f9abd0 | 1552 | debug(33, 5) ("clientWriteComplete: FD %d transfer is DONE\n", fd); |
7a2f978b | 1553 | /* We're finished case */ |
c07aed63 | 1554 | if (http->entry->mem_obj->reply->content_length < 0) { |
ebb6e9a0 | 1555 | debug(33, 5) ("clientWriteComplete: closing, content_length < 0\n"); |
c07aed63 | 1556 | comm_close(fd); |
1557 | } else if (!done) { | |
ebb6e9a0 | 1558 | debug(33, 5) ("clientWriteComplete: closing, !done\n"); |
c07aed63 | 1559 | comm_close(fd); |
1560 | } else if (EBIT_TEST(entry->flag, ENTRY_BAD_LENGTH)) { | |
ebb6e9a0 | 1561 | debug(33, 5) ("clientWriteComplete: closing, ENTRY_BAD_LENGTH\n"); |
7a2f978b | 1562 | comm_close(fd); |
79a15e0a | 1563 | } else if (EBIT_TEST(http->request->flags, REQ_PROXY_KEEPALIVE)) { |
93f9abd0 | 1564 | debug(33, 5) ("clientWriteComplete: FD %d Keeping Alive\n", fd); |
1a92a1e2 | 1565 | clientKeepaliveNextRequest(http); |
7a2f978b | 1566 | } else { |
1567 | comm_close(fd); | |
1568 | } | |
1569 | } else { | |
1570 | /* More data will be coming from primary server; register with | |
1571 | * storage manager. */ | |
0e473d70 | 1572 | if (entry->store_status == STORE_ABORTED) |
6cf028ab | 1573 | debug(33, 0) ("clientWriteComplete 2: entry->swap_status == STORE_ABORTED\n"); |
7a2f978b | 1574 | storeClientCopy(entry, |
1575 | http->out.offset, | |
1576 | http->out.offset, | |
1577 | SM_PAGE_SIZE, | |
7021844c | 1578 | memAllocate(MEM_4K_BUF), |
7a2f978b | 1579 | clientSendMoreData, |
1580 | http); | |
1581 | } | |
1582 | } | |
1583 | ||
038eb4ed | 1584 | /* |
99edd1c3 | 1585 | * client issued a request with an only-if-cached cache-control directive; |
038eb4ed | 1586 | * we did not find a cached object that can be returned without |
99edd1c3 | 1587 | * contacting other servers; |
038eb4ed | 1588 | * respond with a 504 (Gateway Timeout) as suggested in [RFC 2068] |
1589 | */ | |
1590 | static void | |
1591 | clientProcessOnlyIfCachedMiss(clientHttpRequest * http) | |
1592 | { | |
1593 | char *url = http->uri; | |
1594 | request_t *r = http->request; | |
1595 | ErrorState *err = NULL; | |
1596 | debug(33, 4) ("clientProcessOnlyIfCachedMiss: '%s %s'\n", | |
1597 | RequestMethodStr[r->method], url); | |
038eb4ed | 1598 | http->al.http.code = HTTP_GATEWAY_TIMEOUT; |
1599 | err = errorCon(ERR_ONLY_IF_CACHED_MISS, HTTP_GATEWAY_TIMEOUT); | |
1600 | err->request = requestLink(r); | |
1601 | err->src_addr = http->conn->peer.sin_addr; | |
1602 | http->entry = clientCreateStoreEntry(http, r->method, 0); | |
1603 | errorAppendEntry(http->entry, err); | |
1604 | } | |
1605 | ||
50ddd7a4 | 1606 | static log_type |
1607 | clientProcessRequest2(clientHttpRequest * http) | |
1608 | { | |
1609 | const request_t *r = http->request; | |
9f086470 | 1610 | const cache_key *key; |
50ddd7a4 | 1611 | StoreEntry *e; |
9f086470 | 1612 | if (r->method == METHOD_HEAD) |
49d3fcb0 | 1613 | key = storeKeyPublic(http->uri, METHOD_GET); |
9f086470 | 1614 | else |
49d3fcb0 | 1615 | key = storeKeyPublic(http->uri, r->method); |
57b1ff70 | 1616 | e = http->entry = storeGet(key); |
6cfa8966 | 1617 | #if USE_CACHE_DIGESTS |
57b1ff70 | 1618 | http->lookup_type = e ? "HIT" : "MISS"; |
1ca847dd | 1619 | #endif |
49d3fcb0 | 1620 | if (NULL == e) { |
50ddd7a4 | 1621 | /* this object isn't in the cache */ |
1622 | return LOG_TCP_MISS; | |
50ddd7a4 | 1623 | } else if (!storeEntryValidToSend(e)) { |
1624 | storeRelease(e); | |
1625 | http->entry = NULL; | |
1626 | return LOG_TCP_MISS; | |
1627 | } else if (EBIT_TEST(r->flags, REQ_NOCACHE)) { | |
1628 | /* NOCACHE should always eject a negative cached object */ | |
1629 | if (EBIT_TEST(e->flag, ENTRY_NEGCACHED)) | |
1630 | storeRelease(e); | |
1631 | /* NOCACHE+IMS should not eject a valid object */ | |
1632 | else if (EBIT_TEST(r->flags, REQ_IMS)) | |
1633 | (void) 0; | |
1634 | /* Request-Range should not eject a valid object */ | |
1635 | else if (EBIT_TEST(r->flags, REQ_RANGE)) | |
1636 | (void) 0; | |
1637 | else | |
1638 | storeRelease(e); | |
1639 | ipcacheReleaseInvalid(r->host); | |
1640 | http->entry = NULL; | |
ee1679df | 1641 | return LOG_TCP_CLIENT_REFRESH_MISS; |
50ddd7a4 | 1642 | } else { |
49d3fcb0 | 1643 | http->entry = e; |
50ddd7a4 | 1644 | return LOG_TCP_HIT; |
1645 | } | |
1646 | } | |
1647 | ||
4c323c5f | 1648 | static void |
fb63215a | 1649 | clientProcessRequest(clientHttpRequest * http) |
7a2f978b | 1650 | { |
23d92c64 | 1651 | char *url = http->uri; |
50ddd7a4 | 1652 | request_t *r = http->request; |
fb63215a | 1653 | int fd = http->conn->fd; |
1bea1d83 | 1654 | HttpReply *rep; |
93f9abd0 | 1655 | debug(33, 4) ("clientProcessRequest: %s '%s'\n", |
50ddd7a4 | 1656 | RequestMethodStr[r->method], |
7a2f978b | 1657 | url); |
fb63215a | 1658 | if (r->method == METHOD_CONNECT) { |
7a2f978b | 1659 | http->log_type = LOG_TCP_MISS; |
ea0efb98 | 1660 | sslStart(fd, url, r, &http->out.size); |
1661 | return; | |
fb63215a | 1662 | } else if (r->method == METHOD_PURGE) { |
ea0efb98 | 1663 | clientPurgeRequest(http); |
1664 | return; | |
fb63215a | 1665 | } else if (r->method == METHOD_TRACE) { |
50ddd7a4 | 1666 | if (r->max_forwards == 0) { |
b17b22eb | 1667 | http->entry = clientCreateStoreEntry(http, r->method, 0); |
1668 | storeReleaseRequest(http->entry); | |
1669 | storeBuffer(http->entry); | |
1bea1d83 | 1670 | rep = httpReplyCreate(); |
31be8b80 | 1671 | httpReplySetHeaders(rep, 1.0, HTTP_OK, NULL, "text/plain", |
2246b732 | 1672 | httpRequestPrefixLen(r), 0, squid_curtime); |
1bea1d83 | 1673 | httpReplySwapOut(rep, http->entry); |
1674 | httpReplyDestroy(rep); | |
2246b732 | 1675 | httpRequestSwapOut(r, http->entry); |
b17b22eb | 1676 | storeComplete(http->entry); |
7a2f978b | 1677 | return; |
1678 | } | |
1679 | /* yes, continue */ | |
6addbd81 | 1680 | http->log_type = LOG_TCP_MISS; |
efb9218c | 1681 | } else if (pumpMethod(r->method)) { |
fb63215a | 1682 | http->log_type = LOG_TCP_MISS; |
31be8b80 | 1683 | /* XXX oof, POST can be cached! */ |
54220df8 | 1684 | pumpInit(fd, r, http->uri); |
31be8b80 | 1685 | } else { |
efb9218c | 1686 | http->log_type = clientProcessRequest2(http); |
7a2f978b | 1687 | } |
93f9abd0 | 1688 | debug(33, 4) ("clientProcessRequest: %s for '%s'\n", |
7a2f978b | 1689 | log_tags[http->log_type], |
23d92c64 | 1690 | http->uri); |
7a2f978b | 1691 | http->out.offset = 0; |
49d3fcb0 | 1692 | if (NULL != http->entry) { |
1693 | storeLockObject(http->entry); | |
1694 | storeCreateMemObject(http->entry, http->uri, http->log_uri); | |
1695 | storeClientListAdd(http->entry, http); | |
1696 | http->entry->refcount++; | |
1697 | storeClientCopy(http->entry, | |
7a2f978b | 1698 | http->out.offset, |
1699 | http->out.offset, | |
1700 | SM_PAGE_SIZE, | |
7021844c | 1701 | memAllocate(MEM_4K_BUF), |
7a2f978b | 1702 | clientCacheHit, |
1703 | http); | |
49d3fcb0 | 1704 | } else { |
1705 | /* MISS CASE */ | |
1706 | http->log_type = LOG_TCP_MISS; | |
fb63215a | 1707 | clientProcessMiss(http); |
7a2f978b | 1708 | } |
1709 | } | |
1710 | ||
1711 | /* | |
1712 | * Prepare to fetch the object as it's a cache miss of some kind. | |
1713 | */ | |
1714 | static void | |
fb63215a | 1715 | clientProcessMiss(clientHttpRequest * http) |
7a2f978b | 1716 | { |
23d92c64 | 1717 | char *url = http->uri; |
f44af445 | 1718 | request_t *r = http->request; |
7a2f978b | 1719 | ErrorState *err = NULL; |
93f9abd0 | 1720 | debug(33, 4) ("clientProcessMiss: '%s %s'\n", |
f44af445 | 1721 | RequestMethodStr[r->method], url); |
79e0dc20 | 1722 | /* |
1723 | * We might have a left-over StoreEntry from a failed cache hit | |
1724 | * or IMS request. | |
1725 | */ | |
1726 | if (http->entry) { | |
12784378 | 1727 | if (EBIT_TEST(http->entry->flag, ENTRY_SPECIAL)) |
1728 | debug(33, 0) ("clientProcessMiss: miss on a special object (%s).\n", url); | |
79e0dc20 | 1729 | storeUnregister(http->entry, http); |
1730 | storeUnlockObject(http->entry); | |
1731 | http->entry = NULL; | |
1732 | } | |
7c1d4010 | 1733 | if (clientOnlyIfCached(http)) { |
1734 | clientProcessOnlyIfCachedMiss(http); | |
1735 | return; | |
1736 | } | |
9330543e | 1737 | /* |
1738 | * Deny loops when running in accelerator/transproxy mode. | |
1739 | */ | |
1740 | if (http->flags.accel && EBIT_TEST(r->flags, REQ_LOOPDETECT)) { | |
1741 | http->al.http.code = HTTP_FORBIDDEN; | |
1742 | err = errorCon(ERR_ACCESS_DENIED, HTTP_FORBIDDEN); | |
1743 | err->request = requestLink(r); | |
1744 | err->src_addr = http->conn->peer.sin_addr; | |
1745 | http->entry = clientCreateStoreEntry(http, r->method, 0); | |
1746 | errorAppendEntry(http->entry, err); | |
1747 | return; | |
1748 | } | |
79e0dc20 | 1749 | assert(http->out.offset == 0); |
f44af445 | 1750 | http->entry = clientCreateStoreEntry(http, r->method, r->flags); |
79e0dc20 | 1751 | http->entry->refcount++; |
1da5651f | 1752 | if (http->flags.internal) |
1753 | r->protocol = PROTO_INTERNAL; | |
d1061d2b | 1754 | fwdStart(http->conn->fd, http->entry, r, http->conn->peer.sin_addr); |
7a2f978b | 1755 | } |
1756 | ||
99edd1c3 | 1757 | static clientHttpRequest * |
1758 | parseHttpRequestAbort(ConnStateData * conn, const char *uri) | |
1759 | { | |
1760 | clientHttpRequest *http = xcalloc(1, sizeof(clientHttpRequest)); | |
1761 | cbdataAdd(http, MEM_NONE); | |
1762 | http->conn = conn; | |
1763 | http->start = current_time; | |
1764 | http->req_sz = conn->in.offset; | |
1765 | http->uri = xstrdup(uri); | |
1766 | http->log_uri = xstrdup(uri); | |
d192d11f | 1767 | http->range_iter.boundary = StringNull; |
99edd1c3 | 1768 | return http; |
1769 | } | |
1770 | ||
7a2f978b | 1771 | /* |
1772 | * parseHttpRequest() | |
1773 | * | |
1774 | * Returns | |
1775 | * NULL on error or incomplete request | |
1776 | * a clientHttpRequest structure on success | |
1777 | */ | |
1778 | static clientHttpRequest * | |
1779 | parseHttpRequest(ConnStateData * conn, method_t * method_p, int *status, | |
ea285003 | 1780 | char **prefix_p, size_t * req_line_sz_p) |
7a2f978b | 1781 | { |
1782 | char *inbuf = NULL; | |
1783 | char *mstr = NULL; | |
1784 | char *url = NULL; | |
1785 | char *req_hdr = NULL; | |
7a2f978b | 1786 | float http_ver; |
1787 | char *token = NULL; | |
1788 | char *t = NULL; | |
2334c194 | 1789 | char *end; |
7a2f978b | 1790 | int free_request = 0; |
1791 | size_t header_sz; /* size of headers, not including first line */ | |
ea285003 | 1792 | size_t prefix_sz; /* size of whole request (req-line + headers) */ |
7a2f978b | 1793 | size_t url_sz; |
1794 | method_t method; | |
1795 | clientHttpRequest *http = NULL; | |
1796 | ||
1797 | /* Make sure a complete line has been received */ | |
99edd1c3 | 1798 | if ((t = strchr(conn->in.buf, '\n')) == NULL) { |
93f9abd0 | 1799 | debug(33, 5) ("Incomplete request line, waiting for more data\n"); |
7a2f978b | 1800 | *status = 0; |
08e70b8f | 1801 | *prefix_p = NULL; |
1802 | *method_p = METHOD_NONE; | |
7a2f978b | 1803 | return NULL; |
1804 | } | |
99edd1c3 | 1805 | *req_line_sz_p = t - conn->in.buf; |
7a2f978b | 1806 | /* Use xmalloc/xmemcpy instead of xstrdup because inbuf might |
1807 | * contain NULL bytes; especially for POST data */ | |
1808 | inbuf = xmalloc(conn->in.offset + 1); | |
1809 | xmemcpy(inbuf, conn->in.buf, conn->in.offset); | |
1810 | *(inbuf + conn->in.offset) = '\0'; | |
1811 | ||
99edd1c3 | 1812 | /* pre-set these values to make aborting simpler */ |
1813 | *prefix_p = inbuf; | |
1814 | *method_p = METHOD_NONE; | |
1815 | *status = -1; | |
1816 | ||
7a2f978b | 1817 | /* Look for request method */ |
1818 | if ((mstr = strtok(inbuf, "\t ")) == NULL) { | |
93f9abd0 | 1819 | debug(33, 1) ("parseHttpRequest: Can't get request method\n"); |
99edd1c3 | 1820 | return parseHttpRequestAbort(conn, "error:invalid-request-method"); |
7a2f978b | 1821 | } |
1822 | method = urlParseMethod(mstr); | |
1823 | if (method == METHOD_NONE) { | |
93f9abd0 | 1824 | debug(33, 1) ("parseHttpRequest: Unsupported method '%s'\n", mstr); |
99edd1c3 | 1825 | return parseHttpRequestAbort(conn, "error:unsupported-request-method"); |
7a2f978b | 1826 | } |
93f9abd0 | 1827 | debug(33, 5) ("parseHttpRequest: Method is '%s'\n", mstr); |
3775d53c | 1828 | *method_p = method; |
7a2f978b | 1829 | |
1830 | /* look for URL */ | |
1831 | if ((url = strtok(NULL, "\r\n\t ")) == NULL) { | |
93f9abd0 | 1832 | debug(33, 1) ("parseHttpRequest: Missing URL\n"); |
99edd1c3 | 1833 | return parseHttpRequestAbort(conn, "error:missing-url"); |
7a2f978b | 1834 | } |
93f9abd0 | 1835 | debug(33, 5) ("parseHttpRequest: Request is '%s'\n", url); |
7a2f978b | 1836 | |
1837 | token = strtok(NULL, null_string); | |
1838 | for (t = token; t && *t && *t != '\n' && *t != '\r'; t++); | |
97ce5179 | 1839 | if (t == NULL || *t == '\0' || t == token || strncasecmp(token, "HTTP/", 5)) { |
93f9abd0 | 1840 | debug(33, 3) ("parseHttpRequest: Missing HTTP identifier\n"); |
46052490 | 1841 | #if RELAXED_HTTP_PARSER |
1842 | http_ver = (float) 0.9; /* wild guess */ | |
1843 | #else | |
99edd1c3 | 1844 | return parseHttpRequestAbort(conn, "error:missing-http-ident"); |
7518fce5 | 1845 | #endif |
99edd1c3 | 1846 | } else { |
7518fce5 | 1847 | http_ver = (float) atof(token + 5); |
99edd1c3 | 1848 | } |
7a2f978b | 1849 | |
1850 | /* Check if headers are received */ | |
754b9ce9 | 1851 | req_hdr = t; |
8d9810cd | 1852 | header_sz = headersEnd(req_hdr, conn->in.offset - (req_hdr - inbuf)); |
2334c194 | 1853 | if (0 == header_sz) { |
1a92a1e2 | 1854 | debug(33, 3) ("parseHttpRequest: header_sz == 0\n"); |
7a2f978b | 1855 | *status = 0; |
1856 | return NULL; | |
1857 | } | |
754b9ce9 | 1858 | /* |
99edd1c3 | 1859 | * Skip whitespace at the end of the first line, up to the |
754b9ce9 | 1860 | * first newline. |
1861 | */ | |
1862 | while (isspace(*req_hdr)) { | |
1863 | header_sz--; | |
1864 | if (*(req_hdr++) == '\n') | |
1865 | break; | |
1866 | } | |
1867 | assert(header_sz > 0); | |
1868 | debug(33, 3) ("parseHttpRequest: req_hdr = {%s}\n", req_hdr); | |
2334c194 | 1869 | end = req_hdr + header_sz; |
04990e2d | 1870 | debug(33, 3) ("parseHttpRequest: end = {%s}\n", end); |
99edd1c3 | 1871 | |
99edd1c3 | 1872 | prefix_sz = end - inbuf; |
1873 | *req_line_sz_p = req_hdr - inbuf; | |
ea285003 | 1874 | debug(33, 3) ("parseHttpRequest: prefix_sz = %d, req_line_sz = %d\n", |
99edd1c3 | 1875 | (int) prefix_sz, (int) *req_line_sz_p); |
1876 | assert(prefix_sz <= conn->in.offset); | |
7a2f978b | 1877 | |
1878 | /* Ok, all headers are received */ | |
1879 | http = xcalloc(1, sizeof(clientHttpRequest)); | |
3f6c0fb2 | 1880 | cbdataAdd(http, MEM_NONE); |
7a2f978b | 1881 | http->http_ver = http_ver; |
1882 | http->conn = conn; | |
1883 | http->start = current_time; | |
99edd1c3 | 1884 | http->req_sz = prefix_sz; |
d192d11f | 1885 | http->range_iter.boundary = StringNull; |
99edd1c3 | 1886 | *prefix_p = xmalloc(prefix_sz + 1); |
1887 | xmemcpy(*prefix_p, conn->in.buf, prefix_sz); | |
1888 | *(*prefix_p + prefix_sz) = '\0'; | |
7a2f978b | 1889 | |
ea285003 | 1890 | debug(33, 5) ("parseHttpRequest: Request Header is\n%s\n", (*prefix_p) + *req_line_sz_p); |
23d92c64 | 1891 | /* Assign http->uri */ |
7a2f978b | 1892 | if ((t = strchr(url, '\n'))) /* remove NL */ |
1893 | *t = '\0'; | |
1894 | if ((t = strchr(url, '\r'))) /* remove CR */ | |
1895 | *t = '\0'; | |
1896 | if ((t = strchr(url, '#'))) /* remove HTML anchors */ | |
1897 | *t = '\0'; | |
1898 | ||
4162ee3b | 1899 | /* handle internal objects */ |
1da5651f | 1900 | if (internalCheck(url)) { |
4162ee3b | 1901 | /* prepend our name & port */ |
1da5651f | 1902 | http->uri = xstrdup(internalLocalUri(NULL, url)); |
77ed547a | 1903 | http->flags.internal = 1; |
4162ee3b | 1904 | } |
7a2f978b | 1905 | /* see if we running in Config2.Accel.on, if so got to convert it to URL */ |
4162ee3b | 1906 | else if (Config2.Accel.on && *url == '/') { |
7a2f978b | 1907 | /* prepend the accel prefix */ |
dbfed404 | 1908 | if (opt_accel_uses_host && (t = mime_get_header(req_hdr, "Host"))) { |
7a2f978b | 1909 | /* If a Host: header was specified, use it to build the URL |
1910 | * instead of the one in the Config file. */ | |
1911 | /* | |
1912 | * XXX Use of the Host: header here opens a potential | |
1913 | * security hole. There are no checks that the Host: value | |
1914 | * corresponds to one of your servers. It might, for example, | |
1915 | * refer to www.playboy.com. The 'dst' and/or 'dst_domain' ACL | |
1916 | * types should be used to prevent httpd-accelerators | |
1917 | * handling requests for non-local servers */ | |
1918 | strtok(t, " :/;@"); | |
12fc602c | 1919 | url_sz = strlen(url) + 32 + Config.appendDomainLen + |
1920 | strlen(t); | |
23d92c64 | 1921 | http->uri = xcalloc(url_sz, 1); |
1922 | snprintf(http->uri, url_sz, "http://%s:%d%s", | |
7a2f978b | 1923 | t, (int) Config.Accel.port, url); |
dbfed404 | 1924 | } else if (vhost_mode) { |
1925 | /* Put the local socket IP address as the hostname */ | |
1926 | url_sz = strlen(url) + 32 + Config.appendDomainLen; | |
1927 | http->uri = xcalloc(url_sz, 1); | |
1928 | snprintf(http->uri, url_sz, "http://%s:%d%s", | |
1929 | inet_ntoa(http->conn->me.sin_addr), | |
1930 | (int) Config.Accel.port, | |
1931 | url); | |
93f9abd0 | 1932 | debug(33, 5) ("VHOST REWRITE: '%s'\n", http->uri); |
7a2f978b | 1933 | } else { |
1934 | url_sz = strlen(Config2.Accel.prefix) + strlen(url) + | |
1935 | Config.appendDomainLen + 1; | |
23d92c64 | 1936 | http->uri = xcalloc(url_sz, 1); |
1937 | snprintf(http->uri, url_sz, "%s%s", Config2.Accel.prefix, url); | |
7a2f978b | 1938 | } |
77ed547a | 1939 | http->flags.accel = 1; |
7a2f978b | 1940 | } else { |
1941 | /* URL may be rewritten later, so make extra room */ | |
1942 | url_sz = strlen(url) + Config.appendDomainLen + 5; | |
23d92c64 | 1943 | http->uri = xcalloc(url_sz, 1); |
1944 | strcpy(http->uri, url); | |
77ed547a | 1945 | http->flags.accel = 0; |
7a2f978b | 1946 | } |
23d92c64 | 1947 | http->log_uri = xstrdup(http->uri); |
93f9abd0 | 1948 | debug(33, 5) ("parseHttpRequest: Complete request received\n"); |
7a2f978b | 1949 | if (free_request) |
1950 | safe_free(url); | |
1951 | xfree(inbuf); | |
7a2f978b | 1952 | *status = 1; |
1953 | return http; | |
1954 | } | |
1955 | ||
1956 | static int | |
79d39a72 | 1957 | clientReadDefer(int fdnotused, void *data) |
7a2f978b | 1958 | { |
1959 | ConnStateData *conn = data; | |
1960 | return conn->defer.until > squid_curtime; | |
1961 | } | |
1962 | ||
1963 | static void | |
1964 | clientReadRequest(int fd, void *data) | |
1965 | { | |
1966 | ConnStateData *conn = data; | |
1967 | int parser_return_code = 0; | |
1968 | int k; | |
1969 | request_t *request = NULL; | |
7a2f978b | 1970 | int size; |
7a2f978b | 1971 | method_t method; |
1972 | clientHttpRequest *http = NULL; | |
1973 | clientHttpRequest **H = NULL; | |
08e70b8f | 1974 | char *prefix = NULL; |
7a2f978b | 1975 | ErrorState *err = NULL; |
1976 | fde *F = &fd_table[fd]; | |
44db45e8 | 1977 | int len = conn->in.size - conn->in.offset - 1; |
93f9abd0 | 1978 | debug(33, 4) ("clientReadRequest: FD %d: reading request...\n", fd); |
7a2f978b | 1979 | size = read(fd, conn->in.buf + conn->in.offset, len); |
d8b83480 | 1980 | if (size > 0) { |
ea285003 | 1981 | fd_bytes(fd, size, FD_READ); |
1982 | kb_incr(&Counter.client_http.kbytes_in, size); | |
d8b83480 | 1983 | } |
44db45e8 | 1984 | /* |
1985 | * Don't reset the timeout value here. The timeout value will be | |
1986 | * set to Config.Timeout.request by httpAccept() and | |
1987 | * clientWriteComplete(), and should apply to the request as a | |
1988 | * whole, not individual read() calls. Plus, it breaks our | |
1989 | * lame half-close detection | |
1990 | */ | |
1991 | commSetSelect(fd, COMM_SELECT_READ, clientReadRequest, conn, 0); | |
7a2f978b | 1992 | if (size == 0) { |
1993 | if (conn->chr == NULL) { | |
1994 | /* no current or pending requests */ | |
1995 | comm_close(fd); | |
1996 | return; | |
ea285003 | 1997 | } else if (!Config.onoff.half_closed_clients) { |
1998 | /* admin doesn't want to support half-closed client sockets */ | |
1999 | comm_close(fd); | |
2000 | return; | |
7a2f978b | 2001 | } |
2002 | /* It might be half-closed, we can't tell */ | |
93f9abd0 | 2003 | debug(33, 5) ("clientReadRequest: FD %d closed?\n", fd); |
58a6c186 | 2004 | F->flags.socket_eof = 1; |
7a2f978b | 2005 | conn->defer.until = squid_curtime + 1; |
2006 | conn->defer.n++; | |
44db45e8 | 2007 | fd_note(fd, "half-closed"); |
7a2f978b | 2008 | return; |
2009 | } else if (size < 0) { | |
6d3caf23 | 2010 | if (!ignoreErrno(errno)) { |
7a2f978b | 2011 | debug(50, 2) ("clientReadRequest: FD %d: %s\n", fd, xstrerror()); |
2012 | comm_close(fd); | |
ebf4efff | 2013 | return; |
47130615 | 2014 | } else if (conn->in.offset == 0) { |
7c1d4010 | 2015 | debug(50, 2) ("clientReadRequest: FD %d: no data to process (%s)\n", fd, xstrerror()); |
ebf4efff | 2016 | return; |
7a2f978b | 2017 | } |
ebf4efff | 2018 | /* Continue to process previously read data */ |
47130615 | 2019 | size = 0; |
7a2f978b | 2020 | } |
2021 | conn->in.offset += size; | |
5ede6c8f | 2022 | /* Skip leading (and trailing) whitespace */ |
2023 | while (conn->in.offset > 0 && isspace(conn->in.buf[0])) { | |
2024 | xmemmove(conn->in.buf, conn->in.buf + 1, conn->in.offset - 1); | |
2025 | conn->in.offset--; | |
2026 | } | |
7a2f978b | 2027 | conn->in.buf[conn->in.offset] = '\0'; /* Terminate the string */ |
7a2f978b | 2028 | while (conn->in.offset > 0) { |
ebf4efff | 2029 | int nrequests; |
cff0c749 | 2030 | size_t req_line_sz; |
ebf4efff | 2031 | /* Limit the number of concurrent requests to 2 */ |
2032 | for (H = &conn->chr, nrequests = 0; *H; H = &(*H)->next, nrequests++); | |
2033 | if (nrequests >= 2) { | |
93f9abd0 | 2034 | debug(33, 2) ("clientReadRequest: FD %d max concurrent requests reached\n", fd); |
2035 | debug(33, 5) ("clientReadRequest: FD %d defering new request until one is done\n", fd); | |
47130615 | 2036 | conn->defer.until = squid_curtime + 100; /* Reset when a request is complete */ |
ebf4efff | 2037 | break; |
2038 | } | |
2039 | /* Process request */ | |
7a2f978b | 2040 | http = parseHttpRequest(conn, |
2041 | &method, | |
2042 | &parser_return_code, | |
99edd1c3 | 2043 | &prefix, |
2044 | &req_line_sz); | |
13f11a4a | 2045 | if (!http) |
2046 | safe_free(prefix); | |
7a2f978b | 2047 | if (http) { |
2048 | assert(http->req_sz > 0); | |
2049 | conn->in.offset -= http->req_sz; | |
2050 | assert(conn->in.offset >= 0); | |
ebb6e9a0 | 2051 | debug(33, 5) ("conn->in.offset = %d\n", (int) conn->in.offset); |
6fa92aa2 | 2052 | /* |
2053 | * If we read past the end of this request, move the remaining | |
2054 | * data to the beginning | |
2055 | */ | |
2056 | if (conn->in.offset > 0) | |
dbfed404 | 2057 | xmemmove(conn->in.buf, conn->in.buf + http->req_sz, conn->in.offset); |
ebf4efff | 2058 | /* add to the client request queue */ |
7a2f978b | 2059 | for (H = &conn->chr; *H; H = &(*H)->next); |
2060 | *H = http; | |
2061 | conn->nrequests++; | |
2062 | commSetTimeout(fd, Config.Timeout.lifetime, NULL, NULL); | |
3775d53c | 2063 | if (parser_return_code < 0) { |
93f9abd0 | 2064 | debug(33, 1) ("clientReadRequest: FD %d Invalid Request\n", fd); |
3775d53c | 2065 | err = errorCon(ERR_INVALID_REQ, HTTP_BAD_REQUEST); |
2066 | err->request_hdrs = xstrdup(conn->in.buf); | |
2067 | http->entry = clientCreateStoreEntry(http, method, 0); | |
2068 | errorAppendEntry(http->entry, err); | |
13f11a4a | 2069 | safe_free(prefix); |
3775d53c | 2070 | break; |
2071 | } | |
23d92c64 | 2072 | if ((request = urlParse(method, http->uri)) == NULL) { |
93f9abd0 | 2073 | debug(33, 5) ("Invalid URL: %s\n", http->uri); |
7a2f978b | 2074 | err = errorCon(ERR_INVALID_URL, HTTP_BAD_REQUEST); |
2075 | err->src_addr = conn->peer.sin_addr; | |
23d92c64 | 2076 | err->url = xstrdup(http->uri); |
7a2f978b | 2077 | http->al.http.code = err->http_status; |
f44af445 | 2078 | http->entry = clientCreateStoreEntry(http, method, 0); |
79e0dc20 | 2079 | errorAppendEntry(http->entry, err); |
99edd1c3 | 2080 | safe_free(prefix); |
7a2f978b | 2081 | break; |
99edd1c3 | 2082 | } else { |
2083 | /* compile headers */ | |
2084 | /* we should skip request line! */ | |
ea285003 | 2085 | if (!httpRequestParseHeader(request, prefix + req_line_sz)) |
99edd1c3 | 2086 | debug(33, 1) ("Failed to parse request headers: %s\n%s\n", |
2087 | http->uri, prefix); | |
2088 | /* continue anyway? */ | |
7a2f978b | 2089 | } |
ba26bca4 | 2090 | if (!http->flags.internal) { |
2091 | if (internalCheck(strBuf(request->urlpath))) { | |
2092 | if (0 == strcasecmp(request->host, getMyHostname())) { | |
4b4cd312 | 2093 | if (request->port == Config.Port.http->i) |
2094 | http->flags.internal = 1; | |
ba26bca4 | 2095 | } else if (internalStaticCheck(strBuf(request->urlpath))) { |
5999b776 | 2096 | xstrncpy(request->host, getMyHostname(), SQUIDHOSTNAMELEN); |
2097 | request->port = Config.Port.http->i; | |
2098 | http->flags.internal = 1; | |
ba26bca4 | 2099 | } |
2100 | } | |
2101 | } | |
13f11a4a | 2102 | safe_free(prefix); |
23d92c64 | 2103 | safe_free(http->log_uri); |
2104 | http->log_uri = xstrdup(urlCanonicalClean(request)); | |
7a2f978b | 2105 | request->client_addr = conn->peer.sin_addr; |
2106 | request->http_ver = http->http_ver; | |
7a2f978b | 2107 | if (!urlCheckRequest(request)) { |
2108 | err = errorCon(ERR_UNSUP_REQ, HTTP_NOT_IMPLEMENTED); | |
2109 | err->src_addr = conn->peer.sin_addr; | |
7a2f978b | 2110 | err->request = requestLink(request); |
2111 | http->al.http.code = err->http_status; | |
f44af445 | 2112 | http->entry = clientCreateStoreEntry(http, request->method, 0); |
79e0dc20 | 2113 | errorAppendEntry(http->entry, err); |
3775d53c | 2114 | break; |
7a2f978b | 2115 | } |
31be8b80 | 2116 | if (0 == clientCheckContentLength(request)) { |
2117 | err = errorCon(ERR_INVALID_REQ, HTTP_LENGTH_REQUIRED); | |
2118 | err->src_addr = conn->peer.sin_addr; | |
2119 | err->request = requestLink(request); | |
2120 | http->al.http.code = err->http_status; | |
2121 | http->entry = clientCreateStoreEntry(http, request->method, 0); | |
2122 | errorAppendEntry(http->entry, err); | |
2123 | break; | |
2124 | } | |
7a2f978b | 2125 | http->request = requestLink(request); |
cf26e54c | 2126 | clientAccessCheck(http); |
3775d53c | 2127 | /* |
2128 | * break here for NON-GET because most likely there is a | |
7a2f978b | 2129 | * reqeust body following and we don't want to parse it |
3775d53c | 2130 | * as though it was new request |
2131 | */ | |
7a2f978b | 2132 | if (request->method != METHOD_GET) { |
ebb6e9a0 | 2133 | int cont_len = httpHeaderGetInt(&request->header, HDR_CONTENT_LENGTH); |
2134 | int copy_len = XMIN(cont_len, conn->in.offset); | |
e34195c0 | 2135 | if (copy_len > 0) { |
ebb6e9a0 | 2136 | assert(conn->in.offset >= copy_len); |
2137 | request->body_sz = copy_len; | |
7a2f978b | 2138 | request->body = xmalloc(request->body_sz); |
2139 | xmemcpy(request->body, conn->in.buf, request->body_sz); | |
ebb6e9a0 | 2140 | conn->in.offset -= copy_len; |
2141 | if (conn->in.offset) | |
2142 | xmemmove(conn->in.buf, conn->in.buf + copy_len, conn->in.offset); | |
7a2f978b | 2143 | } |
f7237ed2 | 2144 | /* |
2145 | * ick; cancel the read handler for NON-GET requests | |
2146 | * until this request is forwarded/resolved | |
2147 | */ | |
49d3fcb0 | 2148 | commSetSelect(fd, COMM_SELECT_READ, NULL, NULL, 0); |
7a2f978b | 2149 | break; |
2150 | } | |
7a2f978b | 2151 | continue; /* while offset > 0 */ |
2152 | } else if (parser_return_code == 0) { | |
2153 | /* | |
2154 | * Partial request received; reschedule until parseHttpRequest() | |
2155 | * is happy with the input | |
2156 | */ | |
2157 | k = conn->in.size - 1 - conn->in.offset; | |
2158 | if (k == 0) { | |
2159 | if (conn->in.offset >= Config.maxRequestSize) { | |
2160 | /* The request is too large to handle */ | |
93f9abd0 | 2161 | debug(33, 0) ("Request won't fit in buffer.\n"); |
2162 | debug(33, 0) ("Config 'request_size'= %d bytes.\n", | |
7a2f978b | 2163 | Config.maxRequestSize); |
93f9abd0 | 2164 | debug(33, 0) ("This request = %d bytes.\n", |
5f6ac48b | 2165 | (int) conn->in.offset); |
7a2f978b | 2166 | err = errorCon(ERR_INVALID_REQ, HTTP_REQUEST_ENTITY_TOO_LARGE); |
f44af445 | 2167 | http->entry = clientCreateStoreEntry(http, request->method, 0); |
79e0dc20 | 2168 | errorAppendEntry(http->entry, err); |
7a2f978b | 2169 | return; |
2170 | } | |
2171 | /* Grow the request memory area to accomodate for a large request */ | |
2172 | conn->in.size += REQUEST_BUF_SIZE; | |
2173 | conn->in.buf = xrealloc(conn->in.buf, conn->in.size); | |
59c4d35b | 2174 | /* XXX account conn->in.buf */ |
93f9abd0 | 2175 | debug(33, 2) ("Handling a large request, offset=%d inbufsize=%d\n", |
5f6ac48b | 2176 | (int) conn->in.offset, conn->in.size); |
7a2f978b | 2177 | k = conn->in.size - 1 - conn->in.offset; |
2178 | } | |
7a2f978b | 2179 | break; |
7a2f978b | 2180 | } |
2181 | } | |
2182 | } | |
2183 | ||
2184 | /* general lifetime handler for HTTP requests */ | |
2185 | static void | |
2186 | requestTimeout(int fd, void *data) | |
2187 | { | |
2188 | ConnStateData *conn = data; | |
2189 | ErrorState *err; | |
93f9abd0 | 2190 | debug(33, 2) ("requestTimeout: FD %d: lifetime is expired.\n", fd); |
7a2f978b | 2191 | if (fd_table[fd].rwstate) { |
79e0dc20 | 2192 | /* |
2193 | * Some data has been sent to the client, just close the FD | |
2194 | */ | |
7a2f978b | 2195 | comm_close(fd); |
2196 | } else if (conn->nrequests) { | |
79e0dc20 | 2197 | /* |
2198 | * assume its a persistent connection; just close it | |
2199 | */ | |
7a2f978b | 2200 | comm_close(fd); |
2201 | } else { | |
79e0dc20 | 2202 | /* |
2203 | * Generate an error | |
2204 | */ | |
7a2f978b | 2205 | err = errorCon(ERR_LIFETIME_EXP, HTTP_REQUEST_TIMEOUT); |
7a2f978b | 2206 | err->url = xstrdup("N/A"); |
79e0dc20 | 2207 | /* |
2208 | * Normally we shouldn't call errorSend() in client_side.c, but | |
2209 | * it should be okay in this case. Presumably if we get here | |
2210 | * this is the first request for the connection, and no data | |
2211 | * has been written yet | |
2212 | */ | |
2213 | assert(conn->chr == NULL); | |
7a2f978b | 2214 | errorSend(fd, err); |
79e0dc20 | 2215 | /* |
2216 | * if we don't close() here, we still need a timeout handler! | |
2217 | */ | |
7a2f978b | 2218 | commSetTimeout(fd, 30, requestTimeout, conn); |
2219 | } | |
2220 | } | |
2221 | ||
ba4f8e5a | 2222 | static int |
2223 | httpAcceptDefer(void) | |
7a2f978b | 2224 | { |
3d6629c6 | 2225 | static time_t last_warn = 0; |
2226 | if (fdNFree() >= RESERVED_FD) | |
2227 | return 0; | |
2228 | if (last_warn + 15 < squid_curtime) { | |
2229 | debug(33, 0) ("WARNING! Your cache is running out of filedescriptors\n"); | |
2230 | last_warn = squid_curtime; | |
2231 | } | |
2232 | return 1; | |
7a2f978b | 2233 | } |
2234 | ||
bf8e5903 | 2235 | /* Handle a new connection on HTTP socket. */ |
7a2f978b | 2236 | void |
ba4f8e5a | 2237 | httpAccept(int sock, void *data) |
7a2f978b | 2238 | { |
ba4f8e5a | 2239 | int *N = data; |
7a2f978b | 2240 | int fd = -1; |
2241 | ConnStateData *connState = NULL; | |
2242 | struct sockaddr_in peer; | |
2243 | struct sockaddr_in me; | |
309ad3b6 | 2244 | int max = INCOMING_HTTP_MAX; |
ba4f8e5a | 2245 | while (max-- && !httpAcceptDefer()) { |
e2525655 | 2246 | memset(&peer, '\0', sizeof(struct sockaddr_in)); |
2247 | memset(&me, '\0', sizeof(struct sockaddr_in)); | |
2248 | commSetSelect(sock, COMM_SELECT_READ, httpAccept, NULL, 0); | |
2249 | if ((fd = comm_accept(sock, &peer, &me)) < 0) { | |
2250 | if (!ignoreErrno(errno)) | |
eeb423fb | 2251 | debug(50, 1) ("httpAccept: FD %d: accept failure: %s\n", |
e2525655 | 2252 | sock, xstrerror()); |
2253 | break; | |
2254 | } | |
2255 | debug(33, 4) ("httpAccept: FD %d: accepted\n", fd); | |
2256 | connState = xcalloc(1, sizeof(ConnStateData)); | |
2257 | connState->peer = peer; | |
2258 | connState->log_addr = peer.sin_addr; | |
2259 | connState->log_addr.s_addr &= Config.Addrs.client_netmask.s_addr; | |
2260 | connState->me = me; | |
2261 | connState->fd = fd; | |
2262 | connState->ident.fd = -1; | |
2263 | connState->in.size = REQUEST_BUF_SIZE; | |
2264 | connState->in.buf = xcalloc(connState->in.size, 1); | |
2265 | cbdataAdd(connState, MEM_NONE); | |
2266 | /* XXX account connState->in.buf */ | |
2267 | comm_add_close_handler(fd, connStateFree, connState); | |
2268 | if (Config.onoff.log_fqdn) | |
2269 | fqdncache_gethostbyaddr(peer.sin_addr, FQDN_LOOKUP_IF_MISS); | |
2270 | commSetTimeout(fd, Config.Timeout.request, requestTimeout, connState); | |
2271 | commSetSelect(fd, COMM_SELECT_READ, clientReadRequest, connState, 0); | |
2272 | commSetDefer(fd, clientReadDefer, connState); | |
ba4f8e5a | 2273 | (*N)++; |
7a2f978b | 2274 | } |
7a2f978b | 2275 | } |
2276 | ||
7a2f978b | 2277 | /* return 1 if the request should be aborted */ |
2278 | static int | |
2279 | CheckQuickAbort2(const clientHttpRequest * http) | |
2280 | { | |
4efca7da | 2281 | int curlen; |
2282 | int minlen; | |
2283 | int expectlen; | |
7a2f978b | 2284 | |
79a15e0a | 2285 | if (!EBIT_TEST(http->request->flags, REQ_CACHABLE)) |
7a2f978b | 2286 | return 1; |
79a15e0a | 2287 | if (EBIT_TEST(http->entry->flag, KEY_PRIVATE)) |
7a2f978b | 2288 | return 1; |
2289 | if (http->entry->mem_obj == NULL) | |
2290 | return 1; | |
038eb4ed | 2291 | expectlen = http->entry->mem_obj->reply->content_length; |
4efca7da | 2292 | curlen = (int) http->entry->mem_obj->inmem_hi; |
2293 | minlen = (int) Config.quickAbort.min; | |
7a2f978b | 2294 | if (minlen < 0) |
2295 | /* disabled */ | |
2296 | return 0; | |
2297 | if (curlen > expectlen) | |
2298 | /* bad content length */ | |
2299 | return 1; | |
2300 | if ((expectlen - curlen) < minlen) | |
2301 | /* only little more left */ | |
2302 | return 0; | |
2303 | if ((expectlen - curlen) > Config.quickAbort.max) | |
2304 | /* too much left to go */ | |
2305 | return 1; | |
37d0359b | 2306 | if (expectlen < 100) |
4efca7da | 2307 | /* avoid FPE */ |
2308 | return 0; | |
37d0359b | 2309 | if ((curlen / (expectlen / 100)) > Config.quickAbort.pct) |
7a2f978b | 2310 | /* past point of no return */ |
2311 | return 0; | |
2312 | return 1; | |
2313 | } | |
2314 | ||
2315 | ||
2316 | static void | |
2317 | CheckQuickAbort(clientHttpRequest * http) | |
2318 | { | |
2319 | StoreEntry *entry = http->entry; | |
2320 | /* Note, set entry here because http->entry might get changed (for IMS | |
2321 | * requests) during the storeAbort() call */ | |
2322 | if (entry == NULL) | |
2323 | return; | |
36547bcf | 2324 | if (storePendingNClients(entry) > 0) |
7a2f978b | 2325 | return; |
2326 | if (entry->store_status != STORE_PENDING) | |
2327 | return; | |
2328 | if (CheckQuickAbort2(http) == 0) | |
2329 | return; | |
93f9abd0 | 2330 | debug(33, 3) ("CheckQuickAbort: ABORTING %s\n", storeUrl(entry)); |
7a2f978b | 2331 | storeAbort(entry, 1); |
2332 | } | |
2333 | ||
978e455f | 2334 | #define SENDING_BODY 0 |
2335 | #define SENDING_HDRSONLY 1 | |
7a2f978b | 2336 | static int |
1b02b5be | 2337 | clientCheckTransferDone(clientHttpRequest * http) |
7a2f978b | 2338 | { |
978e455f | 2339 | int sending = SENDING_BODY; |
7a2f978b | 2340 | StoreEntry *entry = http->entry; |
978e455f | 2341 | MemObject *mem; |
2342 | http_reply *reply; | |
2343 | int sendlen; | |
7a2f978b | 2344 | if (entry == NULL) |
2345 | return 0; | |
9f086470 | 2346 | /* |
2347 | * For now, 'done_copying' is used for special cases like | |
2348 | * Range and HEAD requests. | |
2349 | */ | |
2350 | if (http->flags.done_copying) | |
2351 | return 1; | |
978e455f | 2352 | /* |
2353 | * Handle STORE_OK and STORE_ABORTED objects. | |
07304bf9 | 2354 | * objectLen(entry) will be set proprely. |
978e455f | 2355 | */ |
2356 | if (entry->store_status != STORE_PENDING) { | |
07304bf9 | 2357 | if (http->out.offset >= objectLen(entry)) |
7a2f978b | 2358 | return 1; |
513f05a6 | 2359 | else |
2360 | return 0; | |
2361 | } | |
978e455f | 2362 | /* |
2363 | * Now, handle STORE_PENDING objects | |
2364 | */ | |
2365 | mem = entry->mem_obj; | |
2366 | assert(mem != NULL); | |
2367 | assert(http->request != NULL); | |
2368 | reply = mem->reply; | |
2369 | if (reply->hdr_sz == 0) | |
b34ed725 | 2370 | return 0; /* haven't found end of headers yet */ |
cb69b4c7 | 2371 | else if (reply->sline.status == HTTP_OK) |
b34ed725 | 2372 | sending = SENDING_BODY; |
cb69b4c7 | 2373 | else if (reply->sline.status == HTTP_NO_CONTENT) |
b34ed725 | 2374 | sending = SENDING_HDRSONLY; |
cb69b4c7 | 2375 | else if (reply->sline.status == HTTP_NOT_MODIFIED) |
b34ed725 | 2376 | sending = SENDING_HDRSONLY; |
cb69b4c7 | 2377 | else if (reply->sline.status < HTTP_OK) |
a3c60429 | 2378 | sending = SENDING_HDRSONLY; |
978e455f | 2379 | else if (http->request->method == METHOD_HEAD) |
b34ed725 | 2380 | sending = SENDING_HDRSONLY; |
978e455f | 2381 | else |
2382 | sending = SENDING_BODY; | |
2383 | /* | |
2384 | * Figure out how much data we are supposed to send. | |
2385 | * If we are sending a body and we don't have a content-length, | |
2386 | * then we must wait for the object to become STORE_OK or | |
2387 | * STORE_ABORTED. | |
2388 | */ | |
2389 | if (sending == SENDING_HDRSONLY) | |
2390 | sendlen = reply->hdr_sz; | |
038eb4ed | 2391 | else if (reply->content_length < 0) |
978e455f | 2392 | return 0; |
2393 | else | |
038eb4ed | 2394 | sendlen = reply->content_length + reply->hdr_sz; |
978e455f | 2395 | /* |
2396 | * Now that we have the expected length, did we send it all? | |
2397 | */ | |
2398 | if (http->out.offset < sendlen) | |
2399 | return 0; | |
2400 | else | |
b34ed725 | 2401 | return 1; |
7a2f978b | 2402 | } |
2403 | ||
7a2f978b | 2404 | /* |
2405 | * This function is designed to serve a fairly specific purpose. | |
2406 | * Occasionally our vBNS-connected caches can talk to each other, but not | |
2407 | * the rest of the world. Here we try to detect frequent failures which | |
2408 | * make the cache unusable (e.g. DNS lookup and connect() failures). If | |
2409 | * the failure:success ratio goes above 1.0 then we go into "hit only" | |
2410 | * mode where we only return UDP_HIT or UDP_MISS_NOFETCH. Neighbors | |
2411 | * will only fetch HITs from us if they are using the ICP protocol. We | |
2412 | * stay in this mode for 5 minutes. | |
2413 | * | |
2414 | * Duane W., Sept 16, 1996 | |
2415 | */ | |
2416 | ||
2417 | static void | |
88aad2e5 | 2418 | checkFailureRatio(err_type etype, hier_code hcode) |
7a2f978b | 2419 | { |
88aad2e5 | 2420 | static double magic_factor = 100.0; |
7a2f978b | 2421 | double n_good; |
2422 | double n_bad; | |
2423 | if (hcode == HIER_NONE) | |
2424 | return; | |
88aad2e5 | 2425 | n_good = magic_factor / (1.0 + request_failure_ratio); |
7a2f978b | 2426 | n_bad = magic_factor - n_good; |
88aad2e5 | 2427 | switch (etype) { |
7a2f978b | 2428 | case ERR_DNS_FAIL: |
2429 | case ERR_CONNECT_FAIL: | |
2430 | case ERR_READ_ERROR: | |
2431 | n_bad++; | |
2432 | break; | |
2433 | default: | |
2434 | n_good++; | |
2435 | } | |
88aad2e5 | 2436 | request_failure_ratio = n_bad / n_good; |
7a2f978b | 2437 | if (hit_only_mode_until > squid_curtime) |
2438 | return; | |
88aad2e5 | 2439 | if (request_failure_ratio < 1.0) |
7a2f978b | 2440 | return; |
93f9abd0 | 2441 | debug(33, 0) ("Failure Ratio at %4.2f\n", request_failure_ratio); |
2442 | debug(33, 0) ("Going into hit-only-mode for %d minutes...\n", | |
7a2f978b | 2443 | FAILURE_MODE_TIME / 60); |
2444 | hit_only_mode_until = squid_curtime + FAILURE_MODE_TIME; | |
88aad2e5 | 2445 | request_failure_ratio = 0.8; /* reset to something less than 1.0 */ |
7a2f978b | 2446 | } |
15df8349 | 2447 | |
2448 | void | |
2449 | clientHttpConnectionsOpen(void) | |
2450 | { | |
2451 | ushortlist *u; | |
2452 | int fd; | |
15df8349 | 2453 | for (u = Config.Port.http; u; u = u->next) { |
8daca701 | 2454 | enter_suid(); |
2455 | fd = comm_open(SOCK_STREAM, | |
2456 | 0, | |
2457 | Config.Addrs.tcp_incoming, | |
2458 | u->i, | |
2459 | COMM_NONBLOCKING, | |
2460 | "HTTP Socket"); | |
2461 | leave_suid(); | |
2462 | if (fd < 0) | |
2463 | continue; | |
2464 | comm_listen(fd); | |
2465 | commSetSelect(fd, COMM_SELECT_READ, httpAccept, NULL, 0); | |
eeb423fb | 2466 | /*commSetDefer(fd, httpAcceptDefer, NULL); */ |
8daca701 | 2467 | debug(1, 1) ("Accepting HTTP connections on port %d, FD %d.\n", |
2468 | (int) u->i, fd); | |
2469 | HttpSockets[NHttpSockets++] = fd; | |
15df8349 | 2470 | } |
2471 | if (NHttpSockets < 1) | |
8daca701 | 2472 | fatal("Cannot open HTTP Port"); |
15df8349 | 2473 | } |
c0fbae16 | 2474 | |
2475 | void | |
2476 | clientHttpConnectionsClose(void) | |
2477 | { | |
2478 | int i; | |
2479 | for (i = 0; i < NHttpSockets; i++) { | |
2480 | if (HttpSockets[i] >= 0) { | |
2481 | debug(1, 1) ("FD %d Closing HTTP connection\n", HttpSockets[i]); | |
2482 | comm_close(HttpSockets[i]); | |
2483 | HttpSockets[i] = -1; | |
2484 | } | |
2485 | } | |
2486 | NHttpSockets = 0; | |
2487 | } |