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3c66d057 | 1 | |
dd11e0b7 | 2 | /* |
5d679edb | 3 | * $Id: client_side.cc,v 1.402 1998/09/24 20:41:19 rousskov 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/ |
e25c139f | 9 | * ---------------------------------------------------------- |
dd11e0b7 | 10 | * |
11 | * Squid is the result of efforts by numerous individuals from the | |
12 | * Internet community. Development is led by Duane Wessels of the | |
e25c139f | 13 | * National Laboratory for Applied Network Research and funded by the |
14 | * National Science Foundation. Squid is Copyrighted (C) 1998 by | |
15 | * Duane Wessels and the University of California San Diego. Please | |
16 | * see the COPYRIGHT file for full details. Squid incorporates | |
17 | * software developed and/or copyrighted by other sources. Please see | |
18 | * the CREDITS file for full details. | |
dd11e0b7 | 19 | * |
20 | * This program is free software; you can redistribute it and/or modify | |
21 | * it under the terms of the GNU General Public License as published by | |
22 | * the Free Software Foundation; either version 2 of the License, or | |
23 | * (at your option) any later version. | |
24 | * | |
25 | * This program is distributed in the hope that it will be useful, | |
26 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
27 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
28 | * GNU General Public License for more details. | |
29 | * | |
30 | * You should have received a copy of the GNU General Public License | |
31 | * along with this program; if not, write to the Free Software | |
cbdec147 | 32 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
e25c139f | 33 | * |
dd11e0b7 | 34 | */ |
f88bb09c | 35 | |
36 | #include "squid.h" | |
37 | ||
5cafc1d6 | 38 | #if IPF_TRANSPARENT |
39 | #if HAVE_SYS_IOCTL_H | |
40 | #include <sys/ioctl.h> | |
41 | #endif | |
42 | #include <netinet/tcp.h> | |
43 | #include <net/if.h> | |
44 | #include <ip_compat.h> | |
45 | #include <ip_fil.h> | |
46 | #include <ip_nat.h> | |
47 | #endif | |
48 | ||
49 | ||
50 | ||
5492ad1d | 51 | #if LINGERING_CLOSE |
52 | #define comm_close comm_lingering_close | |
53 | #endif | |
54 | ||
7a2f978b | 55 | static const char *const crlf = "\r\n"; |
f715bd3a | 56 | static const char *const proxy_auth_challenge_fmt = "Basic realm=\"%s\""; |
7a2f978b | 57 | |
58 | #define REQUEST_BUF_SIZE 4096 | |
59 | #define FAILURE_MODE_TIME 300 | |
60 | ||
61 | /* Local functions */ | |
62 | ||
fc5d6f7f | 63 | static CWCB clientWriteComplete; |
7a2f978b | 64 | static PF clientReadRequest; |
65 | static PF connStateFree; | |
66 | static PF requestTimeout; | |
7a2f978b | 67 | static int CheckQuickAbort2(const clientHttpRequest *); |
1b02b5be | 68 | static int clientCheckTransferDone(clientHttpRequest *); |
7a2f978b | 69 | static void CheckQuickAbort(clientHttpRequest *); |
88aad2e5 | 70 | static void checkFailureRatio(err_type, hier_code); |
fb63215a | 71 | static void clientProcessMiss(clientHttpRequest *); |
eeb423fb | 72 | static void clientBuildReplyHeader(clientHttpRequest * http, HttpReply * rep); |
99edd1c3 | 73 | static clientHttpRequest *parseHttpRequestAbort(ConnStateData * conn, const char *uri); |
7a2f978b | 74 | static clientHttpRequest *parseHttpRequest(ConnStateData *, method_t *, int *, char **, size_t *); |
582b6456 | 75 | static RH clientRedirectDone; |
1b02b5be | 76 | static STCB clientHandleIMSReply; |
f5b8bbc4 | 77 | static int clientGetsOldEntry(StoreEntry * new, StoreEntry * old, request_t * request); |
78 | static int checkAccelOnly(clientHttpRequest *); | |
7c1d4010 | 79 | static int clientOnlyIfCached(clientHttpRequest * http); |
7a2f978b | 80 | static STCB clientSendMoreData; |
81 | static STCB clientCacheHit; | |
99edd1c3 | 82 | static void clientInterpretRequestHeaders(clientHttpRequest *); |
fb63215a | 83 | static void clientProcessRequest(clientHttpRequest *); |
84 | static void clientProcessExpired(void *data); | |
038eb4ed | 85 | static void clientProcessOnlyIfCachedMiss(clientHttpRequest * http); |
cb69b4c7 | 86 | static HttpReply *clientConstructProxyAuthReply(clientHttpRequest * http); |
50ddd7a4 | 87 | static int clientCachable(clientHttpRequest * http); |
88 | static int clientHierarchical(clientHttpRequest * http); | |
efb9218c | 89 | static int clientCheckContentLength(request_t * r); |
ba4f8e5a | 90 | static int httpAcceptDefer(void); |
49d3fcb0 | 91 | static log_type clientProcessRequest2(clientHttpRequest * http); |
ea6f43cd | 92 | |
38d7734b | 93 | static int |
382d851a | 94 | checkAccelOnly(clientHttpRequest * http) |
38d7734b | 95 | { |
96 | /* return TRUE if someone makes a proxy request to us and | |
97 | * we are in httpd-accel only mode */ | |
f1dc9b30 | 98 | if (!Config2.Accel.on) |
38d7734b | 99 | return 0; |
17a0a4ee | 100 | if (Config.onoff.accel_with_proxy) |
38d7734b | 101 | return 0; |
382d851a | 102 | if (http->request->protocol == PROTO_CACHEOBJ) |
38d7734b | 103 | return 0; |
77ed547a | 104 | if (http->flags.accel) |
38d7734b | 105 | return 0; |
106 | return 1; | |
107 | } | |
108 | ||
b8d8561b | 109 | void |
382d851a | 110 | clientAccessCheck(void *data) |
f88bb09c | 111 | { |
382d851a | 112 | clientHttpRequest *http = data; |
113 | ConnStateData *conn = http->conn; | |
99edd1c3 | 114 | const char *browser; |
17a0a4ee | 115 | if (Config.onoff.ident_lookup && conn->ident.state == IDENT_NONE) { |
425ad52e | 116 | identStart(-1, conn, clientAccessCheck, http); |
ba1d2afa | 117 | return; |
118 | } | |
382d851a | 119 | if (checkAccelOnly(http)) { |
120 | clientAccessCheckDone(0, http); | |
75e88d56 | 121 | return; |
f88bb09c | 122 | } |
99edd1c3 | 123 | browser = httpHeaderGetStr(&http->request->header, HDR_USER_AGENT); |
f1dc9b30 | 124 | http->acl_checklist = aclChecklistCreate(Config.accessList.http, |
382d851a | 125 | http->request, |
126 | conn->peer.sin_addr, | |
75e88d56 | 127 | browser, |
382d851a | 128 | conn->ident.ident); |
129 | aclNBCheck(http->acl_checklist, clientAccessCheckDone, http); | |
f88bb09c | 130 | } |
131 | ||
7c1d4010 | 132 | /* |
133 | * returns true if client specified that the object must come from the cache | |
134 | * witout contacting origin server | |
135 | */ | |
136 | static int | |
137 | clientOnlyIfCached(clientHttpRequest * http) | |
138 | { | |
139 | const request_t *r = http->request; | |
140 | assert(r); | |
ea285003 | 141 | return r->cache_control && |
8e092300 | 142 | EBIT_TEST(r->cache_control->mask, CC_ONLY_IF_CACHED); |
7c1d4010 | 143 | } |
144 | ||
cb69b4c7 | 145 | static HttpReply * |
ee1679df | 146 | clientConstructProxyAuthReply(clientHttpRequest * http) |
cb69b4c7 | 147 | { |
148 | ErrorState *err = errorCon(ERR_CACHE_ACCESS_DENIED, HTTP_PROXY_AUTHENTICATION_REQUIRED); | |
149 | HttpReply *rep; | |
150 | err->request = requestLink(http->request); | |
151 | rep = errorBuildReply(err); | |
152 | errorStateFree(err); | |
153 | /* add Authenticate header */ | |
f715bd3a | 154 | httpHeaderPutStrf(&rep->header, HDR_PROXY_AUTHENTICATE, proxy_auth_challenge_fmt, Config.proxyAuthRealm); |
cb69b4c7 | 155 | return rep; |
156 | } | |
fc5d6f7f | 157 | |
23d92c64 | 158 | StoreEntry * |
92695e5e | 159 | clientCreateStoreEntry(clientHttpRequest * h, method_t m, request_flags flags) |
79e0dc20 | 160 | { |
161 | StoreEntry *e; | |
40defb17 | 162 | /* |
163 | * For erroneous requests, we might not have a h->request, | |
164 | * so make a fake one. | |
165 | */ | |
99edd1c3 | 166 | if (h->request == NULL) |
167 | h->request = requestLink(requestCreate(m, PROTO_NONE, NULL)); | |
23d92c64 | 168 | e = storeCreateEntry(h->uri, h->log_uri, flags, m); |
79e0dc20 | 169 | storeClientListAdd(e, h); |
447e176b | 170 | #if DELAY_POOLS |
171 | delaySetStoreClient(e, h, h->request->delay_id); | |
172 | #endif | |
cc27d775 | 173 | storeClientCopy(e, 0, 0, CLIENT_SOCK_SZ, memAllocate(MEM_CLIENT_SOCK_BUF), clientSendMoreData, h); |
79e0dc20 | 174 | return e; |
175 | } | |
176 | ||
177 | ||
b8d8561b | 178 | void |
75e88d56 | 179 | clientAccessCheckDone(int answer, void *data) |
f88bb09c | 180 | { |
382d851a | 181 | clientHttpRequest *http = data; |
02922e76 | 182 | int page_id = -1; |
9b312a19 | 183 | ErrorState *err = NULL; |
23d92c64 | 184 | debug(33, 5) ("clientAccessCheckDone: '%s' answer=%d\n", http->uri, answer); |
382d851a | 185 | http->acl_checklist = NULL; |
fc5d6f7f | 186 | if (answer == ACCESS_ALLOWED) { |
9b5d1d21 | 187 | safe_free(http->uri); |
188 | http->uri = xstrdup(urlCanonical(http->request)); | |
ce66013b | 189 | assert(http->redirect_state == REDIRECT_NONE); |
382d851a | 190 | http->redirect_state = REDIRECT_PENDING; |
191 | redirectStart(http, clientRedirectDone, http); | |
fc5d6f7f | 192 | } else if (answer == ACCESS_REQ_PROXY_AUTH) { |
fc5d6f7f | 193 | http->log_type = LOG_TCP_DENIED; |
92695e5e | 194 | http->entry = clientCreateStoreEntry(http, http->request->method, null_request_flags); |
def67559 | 195 | /* create appropriate response */ |
196 | http->entry->mem_obj->reply = clientConstructProxyAuthReply(http); | |
197 | httpReplySwapOut(http->entry->mem_obj->reply, http->entry); | |
0254527a | 198 | storeComplete(http->entry); |
f88bb09c | 199 | } else { |
23d92c64 | 200 | debug(33, 5) ("Access Denied: %s\n", http->uri); |
901e234d | 201 | debug(33, 5) ("AclMatchedName = %s\n", |
6f47fbc7 | 202 | AclMatchedName ? AclMatchedName : "<null>"); |
79a15e0a | 203 | http->log_type = LOG_TCP_DENIED; |
92695e5e | 204 | http->entry = clientCreateStoreEntry(http, http->request->method, null_request_flags); |
02922e76 | 205 | page_id = aclGetDenyInfoPage(&Config.denyInfoList, AclMatchedName); |
206 | /* NOTE: don't use HTTP_UNAUTHORIZED because then the | |
207 | * stupid browser wants us to authenticate */ | |
208 | err = errorCon(ERR_ACCESS_DENIED, HTTP_FORBIDDEN); | |
209 | err->request = requestLink(http->request); | |
210 | err->src_addr = http->conn->peer.sin_addr; | |
211 | if (page_id > 0) | |
212 | err->page_id = page_id; | |
213 | errorAppendEntry(http->entry, err); | |
f88bb09c | 214 | } |
215 | } | |
216 | ||
b8d8561b | 217 | static void |
218 | clientRedirectDone(void *data, char *result) | |
f88bb09c | 219 | { |
382d851a | 220 | clientHttpRequest *http = data; |
c0cdaf99 | 221 | request_t *new_request = NULL; |
382d851a | 222 | request_t *old_request = http->request; |
23d92c64 | 223 | debug(33, 5) ("clientRedirectDone: '%s' result=%s\n", http->uri, |
f88bb09c | 224 | result ? result : "NULL"); |
ce66013b | 225 | assert(http->redirect_state == REDIRECT_PENDING); |
382d851a | 226 | http->redirect_state = REDIRECT_DONE; |
77ed547a | 227 | if (result && strcmp(result, http->uri)) |
20cc1450 | 228 | new_request = urlParse(old_request->method, result); |
c0cdaf99 | 229 | if (new_request) { |
23d92c64 | 230 | safe_free(http->uri); |
9b5d1d21 | 231 | http->uri = xstrdup(urlCanonical(new_request)); |
20cc1450 | 232 | new_request->http_ver = old_request->http_ver; |
2246b732 | 233 | httpHeaderAppend(&new_request->header, &old_request->header); |
77ed547a | 234 | new_request->client_addr = old_request->client_addr; |
92695e5e | 235 | new_request->flags.redirected = 1; |
6cf028ab | 236 | if (old_request->body) { |
237 | new_request->body = xmalloc(old_request->body_sz); | |
238 | xmemcpy(new_request->body, old_request->body, old_request->body_sz); | |
239 | new_request->body_sz = old_request->body_sz; | |
240 | } | |
20cc1450 | 241 | requestUnlink(old_request); |
382d851a | 242 | http->request = requestLink(new_request); |
f88bb09c | 243 | } |
99edd1c3 | 244 | clientInterpretRequestHeaders(http); |
23d92c64 | 245 | fd_note(http->conn->fd, http->uri); |
fb63215a | 246 | clientProcessRequest(http); |
e81957b7 | 247 | } |
248 | ||
fb63215a | 249 | static void |
250 | clientProcessExpired(void *data) | |
620da955 | 251 | { |
382d851a | 252 | clientHttpRequest *http = data; |
23d92c64 | 253 | char *url = http->uri; |
620da955 | 254 | StoreEntry *entry = NULL; |
23d92c64 | 255 | debug(33, 3) ("clientProcessExpired: '%s'\n", http->uri); |
b9d34cc1 | 256 | assert(http->entry->lastmod >= 0); |
7c1d4010 | 257 | /* |
258 | * check if we are allowed to contact other servers | |
259 | * @?@: Instead of a 504 (Gateway Timeout) reply, we may want to return | |
6106c6fc | 260 | * a stale entry *if* it matches client requirements |
7c1d4010 | 261 | */ |
262 | if (clientOnlyIfCached(http)) { | |
263 | clientProcessOnlyIfCachedMiss(http); | |
264 | return; | |
265 | } | |
92695e5e | 266 | http->request->flags.refresh = 1; |
382d851a | 267 | http->old_entry = http->entry; |
620da955 | 268 | entry = storeCreateEntry(url, |
23d92c64 | 269 | http->log_uri, |
382d851a | 270 | http->request->flags, |
271 | http->request->method); | |
620da955 | 272 | /* NOTE, don't call storeLockObject(), storeCreateEntry() does it */ |
fe96bbe6 | 273 | storeClientListAdd(entry, http); |
274 | storeClientListAdd(http->old_entry, http); | |
447e176b | 275 | #if DELAY_POOLS |
276 | delaySetStoreClient(entry, http, http->request->delay_id); | |
277 | delaySetStoreClient(http->old_entry, http, http->request->delay_id); | |
278 | #endif | |
382d851a | 279 | entry->lastmod = http->old_entry->lastmod; |
1c3e77cd | 280 | debug(33, 5) ("clientProcessExpired: lastmod %d\n", (int) entry->lastmod); |
d1a43e28 | 281 | entry->refcount++; /* EXPIRED CASE */ |
382d851a | 282 | http->entry = entry; |
283 | http->out.offset = 0; | |
d1061d2b | 284 | fwdStart(http->conn->fd, http->entry, http->request, |
285 | http->conn->peer.sin_addr); | |
f990cccc | 286 | /* Register with storage manager to receive updates when data comes in. */ |
0e473d70 | 287 | if (entry->store_status == STORE_ABORTED) |
6cf028ab | 288 | debug(33, 0) ("clientProcessExpired: entry->swap_status == STORE_ABORTED\n"); |
d89d1fb6 | 289 | storeClientCopy(entry, |
fe96bbe6 | 290 | http->out.offset, |
d89d1fb6 | 291 | http->out.offset, |
cc27d775 | 292 | CLIENT_SOCK_SZ, |
293 | memAllocate(MEM_CLIENT_SOCK_BUF), | |
1b02b5be | 294 | clientHandleIMSReply, |
d89d1fb6 | 295 | http); |
620da955 | 296 | } |
297 | ||
91f4d519 | 298 | static int |
299 | clientGetsOldEntry(StoreEntry * new_entry, StoreEntry * old_entry, request_t * request) | |
300 | { | |
71a8a965 | 301 | const http_status status = new_entry->mem_obj->reply->sline.status; |
302 | if (0 == status) { | |
303 | debug(33, 5) ("clientGetsOldEntry: YES, broken HTTP reply\n"); | |
304 | return 1; | |
305 | } | |
91f4d519 | 306 | /* If the reply is anything but "Not Modified" then |
307 | * we must forward it to the client */ | |
71a8a965 | 308 | if (HTTP_NOT_MODIFIED != status) { |
cb69b4c7 | 309 | debug(33, 5) ("clientGetsOldEntry: NO, reply=%d\n", status); |
91f4d519 | 310 | return 0; |
311 | } | |
312 | /* If the client did not send IMS in the request, then it | |
313 | * must get the old object, not this "Not Modified" reply */ | |
92695e5e | 314 | if (!request->flags.ims) { |
a3d5953d | 315 | debug(33, 5) ("clientGetsOldEntry: YES, no client IMS\n"); |
91f4d519 | 316 | return 1; |
317 | } | |
318 | /* If the client IMS time is prior to the entry LASTMOD time we | |
319 | * need to send the old object */ | |
320 | if (modifiedSince(old_entry, request)) { | |
5f6ac48b | 321 | debug(33, 5) ("clientGetsOldEntry: YES, modified since %d\n", |
1afe05c5 | 322 | (int) request->ims); |
91f4d519 | 323 | return 1; |
324 | } | |
a3d5953d | 325 | debug(33, 5) ("clientGetsOldEntry: NO, new one is fine\n"); |
91f4d519 | 326 | return 0; |
327 | } | |
328 | ||
329 | ||
52d4522b | 330 | static void |
1b02b5be | 331 | clientHandleIMSReply(void *data, char *buf, ssize_t size) |
620da955 | 332 | { |
382d851a | 333 | clientHttpRequest *http = data; |
382d851a | 334 | StoreEntry *entry = http->entry; |
620da955 | 335 | MemObject *mem = entry->mem_obj; |
9fb13bb6 | 336 | const char *url = storeUrl(entry); |
e92d33a5 | 337 | int unlink_request = 0; |
76cff1d4 | 338 | StoreEntry *oldentry; |
49d3fcb0 | 339 | int recopy = 1; |
71a8a965 | 340 | const http_status status = mem->reply->sline.status; |
93f9abd0 | 341 | debug(33, 3) ("clientHandleIMSReply: %s, %d bytes\n", url, (int) size); |
6801f8a8 | 342 | if (size < 0 && entry->store_status != STORE_ABORTED) |
343 | storeAbort(entry, 1); | |
344 | if (entry->store_status == STORE_ABORTED) { | |
1b02b5be | 345 | debug(33, 3) ("clientHandleIMSReply: ABORTED '%s'\n", url); |
c54e9052 | 346 | /* We have an existing entry, but failed to validate it */ |
accc6d47 | 347 | /* Its okay to send the old one anyway */ |
348 | http->log_type = LOG_TCP_REFRESH_FAIL_HIT; | |
349 | storeUnregister(entry, http); | |
350 | storeUnlockObject(entry); | |
351 | entry = http->entry = http->old_entry; | |
352 | entry->refcount++; | |
71a8a965 | 353 | } else if (STORE_PENDING == entry->store_status && 0 == status) { |
1b02b5be | 354 | debug(33, 3) ("clientHandleIMSReply: Incomplete headers for '%s'\n", url); |
cc27d775 | 355 | if (size >= CLIENT_SOCK_SZ) { |
4455552a | 356 | /* will not get any bigger than that */ |
357 | debug(33, 3) ("clientHandleIMSReply: Reply is too large '%s', using old entry\n", url); | |
878570db | 358 | /* use old entry, this repeats the code abovez */ |
4455552a | 359 | http->log_type = LOG_TCP_REFRESH_FAIL_HIT; |
360 | storeUnregister(entry, http); | |
743eebfa | 361 | storeUnlockObject(entry); |
4455552a | 362 | entry = http->entry = http->old_entry; |
363 | entry->refcount++; | |
878570db | 364 | /* continue */ |
4455552a | 365 | } else { |
4455552a | 366 | storeClientCopy(entry, |
367 | http->out.offset + size, | |
368 | http->out.offset, | |
cc27d775 | 369 | CLIENT_SOCK_SZ, |
49d3fcb0 | 370 | buf, |
4455552a | 371 | clientHandleIMSReply, |
372 | http); | |
878570db | 373 | return; |
4455552a | 374 | } |
382d851a | 375 | } else if (clientGetsOldEntry(entry, http->old_entry, http->request)) { |
620da955 | 376 | /* We initiated the IMS request, the client is not expecting |
76cff1d4 | 377 | * 304, so put the good one back. First, make sure the old entry |
378 | * headers have been loaded from disk. */ | |
382d851a | 379 | oldentry = http->old_entry; |
382d851a | 380 | http->log_type = LOG_TCP_REFRESH_HIT; |
d89d1fb6 | 381 | if (oldentry->mem_obj->request == NULL) { |
382 | oldentry->mem_obj->request = requestLink(mem->request); | |
383 | unlink_request = 1; | |
e92d33a5 | 384 | } |
64763c37 | 385 | /* Don't memcpy() the whole reply structure here. For example, |
386 | * www.thegist.com (Netscape/1.13) returns a content-length for | |
387 | * 304's which seems to be the length of the 304 HEADERS!!! and | |
388 | * not the body they refer to. */ | |
71a8a965 | 389 | httpReplyUpdateOnNotModified(oldentry->mem_obj->reply, mem->reply); |
d89d1fb6 | 390 | storeTimestampsSet(oldentry); |
382d851a | 391 | storeUnregister(entry, http); |
6d54aea8 | 392 | storeUnlockObject(entry); |
382d851a | 393 | entry = http->entry = oldentry; |
41fad779 | 394 | entry->timestamp = squid_curtime; |
657266fe | 395 | if (unlink_request) { |
e92d33a5 | 396 | requestUnlink(entry->mem_obj->request); |
657266fe | 397 | entry->mem_obj->request = NULL; |
398 | } | |
620da955 | 399 | } else { |
400 | /* the client can handle this reply, whatever it is */ | |
382d851a | 401 | http->log_type = LOG_TCP_REFRESH_MISS; |
71a8a965 | 402 | if (HTTP_NOT_MODIFIED == mem->reply->sline.status) { |
382d851a | 403 | http->old_entry->timestamp = squid_curtime; |
404 | http->old_entry->refcount++; | |
405 | http->log_type = LOG_TCP_REFRESH_HIT; | |
d1a43e28 | 406 | } |
382d851a | 407 | storeUnregister(http->old_entry, http); |
408 | storeUnlockObject(http->old_entry); | |
49d3fcb0 | 409 | recopy = 0; |
620da955 | 410 | } |
382d851a | 411 | http->old_entry = NULL; /* done with old_entry */ |
49d3fcb0 | 412 | assert(entry->store_status != STORE_ABORTED); |
413 | if (recopy) { | |
414 | storeClientCopy(entry, | |
415 | http->out.offset, | |
416 | http->out.offset, | |
cc27d775 | 417 | CLIENT_SOCK_SZ, |
49d3fcb0 | 418 | buf, |
419 | clientSendMoreData, | |
420 | http); | |
421 | } else { | |
422 | clientSendMoreData(data, buf, size); | |
6cf028ab | 423 | } |
620da955 | 424 | } |
91f4d519 | 425 | |
426 | int | |
304d07cb | 427 | modifiedSince(StoreEntry * entry, request_t * request) |
91f4d519 | 428 | { |
429 | int object_length; | |
430 | MemObject *mem = entry->mem_obj; | |
1c3e77cd | 431 | time_t mod_time = entry->lastmod; |
9fb13bb6 | 432 | debug(33, 3) ("modifiedSince: '%s'\n", storeUrl(entry)); |
1c3e77cd | 433 | if (mod_time < 0) |
434 | mod_time = entry->timestamp; | |
0cdcddb9 | 435 | debug(33, 3) ("modifiedSince: mod_time = %d\n", (int) mod_time); |
1c3e77cd | 436 | if (mod_time < 0) |
91f4d519 | 437 | return 1; |
438 | /* Find size of the object */ | |
038eb4ed | 439 | object_length = mem->reply->content_length; |
cb69b4c7 | 440 | if (object_length < 0) |
07304bf9 | 441 | object_length = contentLen(entry); |
1c3e77cd | 442 | if (mod_time > request->ims) { |
a3d5953d | 443 | debug(33, 3) ("--> YES: entry newer than client\n"); |
91f4d519 | 444 | return 1; |
1c3e77cd | 445 | } else if (mod_time < request->ims) { |
a3d5953d | 446 | debug(33, 3) ("--> NO: entry older than client\n"); |
91f4d519 | 447 | return 0; |
448 | } else if (request->imslen < 0) { | |
a3d5953d | 449 | debug(33, 3) ("--> NO: same LMT, no client length\n"); |
91f4d519 | 450 | return 0; |
451 | } else if (request->imslen == object_length) { | |
a3d5953d | 452 | debug(33, 3) ("--> NO: same LMT, same length\n"); |
91f4d519 | 453 | return 0; |
454 | } else { | |
a3d5953d | 455 | debug(33, 3) ("--> YES: same LMT, different length\n"); |
91f4d519 | 456 | return 1; |
457 | } | |
458 | } | |
b3b64e58 | 459 | |
a90eae18 | 460 | void |
382d851a | 461 | clientPurgeRequest(clientHttpRequest * http) |
a90eae18 | 462 | { |
a90eae18 | 463 | StoreEntry *entry; |
9b312a19 | 464 | ErrorState *err = NULL; |
8d6da567 | 465 | HttpReply *r; |
9b312a19 | 466 | debug(33, 3) ("Config.onoff.enable_purge = %d\n", Config.onoff.enable_purge); |
17a0a4ee | 467 | if (!Config.onoff.enable_purge) { |
79a15e0a | 468 | http->log_type = LOG_TCP_DENIED; |
fe40a877 | 469 | err = errorCon(ERR_ACCESS_DENIED, HTTP_FORBIDDEN); |
9b312a19 | 470 | err->request = requestLink(http->request); |
471 | err->src_addr = http->conn->peer.sin_addr; | |
92695e5e | 472 | http->entry = clientCreateStoreEntry(http, http->request->method, null_request_flags); |
79e0dc20 | 473 | errorAppendEntry(http->entry, err); |
a90eae18 | 474 | return; |
475 | } | |
382d851a | 476 | http->log_type = LOG_TCP_MISS; |
2f9aa365 | 477 | if ((entry = storeGetPublic(http->uri, METHOD_GET)) == NULL) { |
9b312a19 | 478 | http->http_code = HTTP_NOT_FOUND; |
a90eae18 | 479 | } else { |
480 | storeRelease(entry); | |
9b312a19 | 481 | http->http_code = HTTP_OK; |
a90eae18 | 482 | } |
49d3fcb0 | 483 | debug(33, 4) ("clientPurgeRequest: Not modified '%s'\n", |
afa9f1cd | 484 | storeUrl(entry)); |
485 | /* | |
486 | * Make a new entry to hold the reply to be written | |
487 | * to the client. | |
488 | */ | |
92695e5e | 489 | http->entry = clientCreateStoreEntry(http, http->request->method, null_request_flags); |
8d6da567 | 490 | httpReplyReset(r = http->entry->mem_obj->reply); |
491 | httpReplySetHeaders(r, 1.0, http->http_code, NULL, NULL, 0, 0, -1); | |
492 | httpReplySwapOut(r, http->entry); | |
afa9f1cd | 493 | storeComplete(http->entry); |
a90eae18 | 494 | } |
e33ba616 | 495 | |
496 | int | |
ea3a2a69 | 497 | checkNegativeHit(StoreEntry * e) |
e33ba616 | 498 | { |
d46a87a8 | 499 | if (!EBIT_TEST(e->flags, ENTRY_NEGCACHED)) |
ea3a2a69 | 500 | return 0; |
501 | if (e->expires <= squid_curtime) | |
502 | return 0; | |
503 | if (e->store_status != STORE_OK) | |
504 | return 0; | |
505 | return 1; | |
e33ba616 | 506 | } |
7a2f978b | 507 | |
a7c05555 | 508 | void |
0e473d70 | 509 | clientUpdateCounters(clientHttpRequest * http) |
a7c05555 | 510 | { |
ee1679df | 511 | int svc_time = tvSubMsec(http->start, current_time); |
b4e7f82d | 512 | ping_data *i; |
39edba21 | 513 | HierarchyLogEntry *H; |
0e473d70 | 514 | Counter.client_http.requests++; |
d8b83480 | 515 | if (isTcpHit(http->log_type)) |
0e473d70 | 516 | Counter.client_http.hits++; |
0e473d70 | 517 | if (http->request->err_type != ERR_NONE) |
518 | Counter.client_http.errors++; | |
12cf1be2 | 519 | statHistCount(&Counter.client_http.all_svc_time, svc_time); |
ee1679df | 520 | /* |
521 | * The idea here is not to be complete, but to get service times | |
522 | * for only well-defined types. For example, we don't include | |
523 | * LOG_TCP_REFRESH_FAIL_HIT because its not really a cache hit | |
524 | * (we *tried* to validate it, but failed). | |
525 | */ | |
526 | switch (http->log_type) { | |
7c9c84ad | 527 | case LOG_TCP_REFRESH_HIT: |
528 | statHistCount(&Counter.client_http.nh_svc_time, svc_time); | |
529 | break; | |
ee1679df | 530 | case LOG_TCP_IMS_HIT: |
12cf1be2 | 531 | statHistCount(&Counter.client_http.nm_svc_time, svc_time); |
ee1679df | 532 | break; |
533 | case LOG_TCP_HIT: | |
534 | case LOG_TCP_MEM_HIT: | |
12cf1be2 | 535 | statHistCount(&Counter.client_http.hit_svc_time, svc_time); |
ee1679df | 536 | break; |
537 | case LOG_TCP_MISS: | |
538 | case LOG_TCP_CLIENT_REFRESH_MISS: | |
12cf1be2 | 539 | statHistCount(&Counter.client_http.miss_svc_time, svc_time); |
ee1679df | 540 | break; |
541 | default: | |
542 | /* make compiler warnings go away */ | |
543 | break; | |
544 | } | |
39edba21 | 545 | H = &http->request->hier; |
69c95dd3 | 546 | switch (H->alg) { |
547 | case PEER_SA_DIGEST: | |
17b6e784 | 548 | Counter.cd.times_used++; |
69c95dd3 | 549 | break; |
550 | case PEER_SA_ICP: | |
551 | Counter.icp.times_used++; | |
b4e7f82d | 552 | i = &H->ping; |
69c95dd3 | 553 | if (0 != i->stop.tv_sec && 0 != i->start.tv_sec) |
554 | statHistCount(&Counter.icp.query_svc_time, | |
555 | tvSubUsec(i->start, i->stop)); | |
556 | if (i->timeout) | |
557 | Counter.icp.query_timeouts++; | |
558 | break; | |
559 | case PEER_SA_NETDB: | |
560 | Counter.netdb.times_used++; | |
561 | break; | |
562 | default: | |
563 | break; | |
17b6e784 | 564 | } |
a7c05555 | 565 | } |
566 | ||
7a2f978b | 567 | static void |
568 | httpRequestFree(void *data) | |
569 | { | |
570 | clientHttpRequest *http = data; | |
571 | clientHttpRequest **H; | |
572 | ConnStateData *conn = http->conn; | |
573 | StoreEntry *entry = http->entry; | |
574 | request_t *request = http->request; | |
575 | MemObject *mem = NULL; | |
93f9abd0 | 576 | debug(33, 3) ("httpRequestFree: %s\n", storeUrl(entry)); |
1b02b5be | 577 | if (!clientCheckTransferDone(http)) { |
7a2f978b | 578 | if (entry) |
579 | storeUnregister(entry, http); /* unregister BEFORE abort */ | |
580 | CheckQuickAbort(http); | |
581 | entry = http->entry; /* reset, IMS might have changed it */ | |
582 | if (entry && entry->ping_status == PING_WAITING) | |
583 | storeReleaseRequest(entry); | |
7a2f978b | 584 | } |
585 | assert(http->log_type < LOG_TYPE_MAX); | |
586 | if (entry) | |
587 | mem = entry->mem_obj; | |
588 | if (http->out.size || http->log_type) { | |
728da2ee | 589 | http->al.icp.opcode = ICP_INVALID; |
ef65d6ca | 590 | http->al.url = http->log_uri; |
591 | debug(33, 9) ("httpRequestFree: al.url='%s'\n", http->al.url); | |
7a2f978b | 592 | if (mem) { |
cb69b4c7 | 593 | http->al.http.code = mem->reply->sline.status; |
038eb4ed | 594 | http->al.http.content_type = strBuf(mem->reply->content_type); |
7a2f978b | 595 | } |
596 | http->al.cache.caddr = conn->log_addr; | |
597 | http->al.cache.size = http->out.size; | |
598 | http->al.cache.code = http->log_type; | |
599 | http->al.cache.msec = tvSubMsec(http->start, current_time); | |
def67559 | 600 | if (request->user_ident[0]) |
601 | http->al.cache.ident = request->user_ident; | |
602 | else | |
603 | http->al.cache.ident = conn->ident.ident; | |
7a2f978b | 604 | if (request) { |
2246b732 | 605 | Packer p; |
606 | MemBuf mb; | |
607 | memBufDefInit(&mb); | |
608 | packerToMemInit(&p, &mb); | |
609 | httpHeaderPackInto(&request->header, &p); | |
7a2f978b | 610 | http->al.http.method = request->method; |
2246b732 | 611 | http->al.headers.request = xstrdup(mb.buf); |
7a2f978b | 612 | http->al.hier = request->hier; |
2246b732 | 613 | packerClean(&p); |
614 | memBufClean(&mb); | |
7a2f978b | 615 | } |
616 | accessLogLog(&http->al); | |
a7c05555 | 617 | clientUpdateCounters(http); |
6f47fbc7 | 618 | clientdbUpdate(conn->peer.sin_addr, http->log_type, PROTO_HTTP, http->out.size); |
7a2f978b | 619 | } |
7a2f978b | 620 | if (http->acl_checklist) |
621 | aclChecklistFree(http->acl_checklist); | |
88aad2e5 | 622 | if (request) |
c24fca87 | 623 | checkFailureRatio(request->err_type, http->al.hier.code); |
23d92c64 | 624 | safe_free(http->uri); |
625 | safe_free(http->log_uri); | |
2246b732 | 626 | safe_free(http->al.headers.request); |
7a2f978b | 627 | safe_free(http->al.headers.reply); |
d192d11f | 628 | stringClean(&http->range_iter.boundary); |
7a2f978b | 629 | if (entry) { |
630 | http->entry = NULL; | |
631 | storeUnregister(entry, http); | |
632 | storeUnlockObject(entry); | |
633 | } | |
634 | /* old_entry might still be set if we didn't yet get the reply | |
1b02b5be | 635 | * code in clientHandleIMSReply() */ |
7a2f978b | 636 | if (http->old_entry) { |
637 | storeUnregister(http->old_entry, http); | |
638 | storeUnlockObject(http->old_entry); | |
639 | http->old_entry = NULL; | |
640 | } | |
641 | requestUnlink(http->request); | |
642 | assert(http != http->next); | |
643 | assert(http->conn->chr != NULL); | |
644 | H = &http->conn->chr; | |
645 | while (*H) { | |
646 | if (*H == http) | |
647 | break; | |
648 | H = &(*H)->next; | |
649 | } | |
650 | assert(*H != NULL); | |
651 | *H = http->next; | |
652 | http->next = NULL; | |
653 | cbdataFree(http); | |
654 | } | |
655 | ||
656 | /* This is a handler normally called by comm_close() */ | |
657 | static void | |
658 | connStateFree(int fd, void *data) | |
659 | { | |
660 | ConnStateData *connState = data; | |
661 | clientHttpRequest *http; | |
93f9abd0 | 662 | debug(33, 3) ("connStateFree: FD %d\n", fd); |
7a2f978b | 663 | assert(connState != NULL); |
79d39a72 | 664 | while ((http = connState->chr) != NULL) { |
7a2f978b | 665 | assert(http->conn == connState); |
666 | assert(connState->chr != connState->chr->next); | |
667 | httpRequestFree(http); | |
668 | } | |
669 | if (connState->ident.fd > -1) | |
670 | comm_close(connState->ident.fd); | |
671 | safe_free(connState->in.buf); | |
59c4d35b | 672 | /* XXX account connState->in.buf */ |
7a2f978b | 673 | pconnHistCount(0, connState->nrequests); |
674 | cbdataFree(connState); | |
675 | } | |
676 | ||
677 | static void | |
99edd1c3 | 678 | clientInterpretRequestHeaders(clientHttpRequest * http) |
7a2f978b | 679 | { |
680 | request_t *request = http->request; | |
99edd1c3 | 681 | const HttpHeader *req_hdr = &request->header; |
682 | #if USE_USERAGENT_LOG | |
683 | const char *str; | |
684 | #endif | |
99edd1c3 | 685 | request->imslen = -1; |
686 | request->ims = httpHeaderGetTime(req_hdr, HDR_IF_MODIFIED_SINCE); | |
687 | if (request->ims > 0) | |
92695e5e | 688 | request->flags.ims = 1; |
99edd1c3 | 689 | if (httpHeaderHas(req_hdr, HDR_PRAGMA)) { |
690 | String s = httpHeaderGetList(req_hdr, HDR_PRAGMA); | |
465dc415 | 691 | if (strListIsMember(&s, "no-cache", ',')) { |
9f60cfdf | 692 | #if HTTP_VIOLATIONS |
cbe3a719 | 693 | if (Config.onoff.reload_into_ims) |
92695e5e | 694 | request->flags.nocache_hack = 1; |
cbe3a719 | 695 | else if (refresh_nocache_hack) |
92695e5e | 696 | request->flags.nocache_hack = 1; |
465dc415 | 697 | else |
9f60cfdf | 698 | #endif |
92695e5e | 699 | request->flags.nocache = 1; |
465dc415 | 700 | } |
99edd1c3 | 701 | stringClean(&s); |
7a2f978b | 702 | } |
4b315324 | 703 | /* ignore range header in non-GETs */ |
704 | if (request->method == METHOD_GET) { | |
705 | request->range = httpHeaderGetRange(req_hdr); | |
706 | if (request->range) | |
92695e5e | 707 | request->flags.range = 1; |
4b315324 | 708 | } |
99edd1c3 | 709 | if (httpHeaderHas(req_hdr, HDR_AUTHORIZATION)) |
92695e5e | 710 | request->flags.auth = 1; |
7a2f978b | 711 | if (request->login[0] != '\0') |
92695e5e | 712 | request->flags.auth = 1; |
99edd1c3 | 713 | if (httpMsgIsPersistent(request->http_ver, req_hdr)) |
92695e5e | 714 | request->flags.proxy_keepalive = 1; |
99edd1c3 | 715 | if (httpHeaderHas(req_hdr, HDR_VIA)) { |
716 | String s = httpHeaderGetList(req_hdr, HDR_VIA); | |
edf3ffdc | 717 | /* ThisCache cannot be a member of Via header, "1.0 ThisCache" can */ |
718 | if (strListIsSubstr(&s, ThisCache, ',')) { | |
9330543e | 719 | debug(33, 1) ("WARNING: Forwarding loop detected for '%s'\n", |
720 | http->uri); | |
721 | debug(33, 1) ("--> %s\n", strBuf(s)); | |
92695e5e | 722 | request->flags.loopdetect = 1; |
7a2f978b | 723 | } |
d21f1c54 | 724 | #if FORW_VIA_DB |
ea285003 | 725 | fvdbCountVia(strBuf(s)); |
d21f1c54 | 726 | #endif |
99edd1c3 | 727 | stringClean(&s); |
d21f1c54 | 728 | } |
7a2f978b | 729 | #if USE_USERAGENT_LOG |
99edd1c3 | 730 | if ((str = httpHeaderGetStr(req_hdr, HDR_USER_AGENT))) |
731 | logUserAgent(fqdnFromAddr(http->conn->peer.sin_addr), str); | |
d21f1c54 | 732 | #endif |
733 | #if FORW_VIA_DB | |
99edd1c3 | 734 | if (httpHeaderHas(req_hdr, HDR_X_FORWARDED_FOR)) { |
735 | String s = httpHeaderGetList(req_hdr, HDR_X_FORWARDED_FOR); | |
736 | fvdbCountForw(strBuf(s)); | |
737 | stringClean(&s); | |
738 | } | |
7a2f978b | 739 | #endif |
99edd1c3 | 740 | request->cache_control = httpHeaderGetCc(req_hdr); |
7a2f978b | 741 | if (request->method == METHOD_TRACE) { |
99edd1c3 | 742 | request->max_forwards = httpHeaderGetInt(req_hdr, HDR_MAX_FORWARDS); |
7a2f978b | 743 | } |
50ddd7a4 | 744 | if (clientCachable(http)) |
92695e5e | 745 | request->flags.cachable = 1; |
50ddd7a4 | 746 | if (clientHierarchical(http)) |
92695e5e | 747 | request->flags.hierarchical = 1; |
95e36d02 | 748 | #if DELAY_POOLS |
749 | if (delayClient(http)) { | |
750 | debug(33, 5) ("clientInterpretRequestHeaders: delay request class %d position %d\n", | |
447e176b | 751 | request->delay_id >> 16, |
752 | request->delay_id & 0xFFFF); | |
95e36d02 | 753 | } |
754 | #endif | |
99edd1c3 | 755 | debug(33, 5) ("clientInterpretRequestHeaders: REQ_NOCACHE = %s\n", |
92695e5e | 756 | request->flags.nocache ? "SET" : "NOT SET"); |
99edd1c3 | 757 | debug(33, 5) ("clientInterpretRequestHeaders: REQ_CACHABLE = %s\n", |
92695e5e | 758 | request->flags.cachable ? "SET" : "NOT SET"); |
99edd1c3 | 759 | debug(33, 5) ("clientInterpretRequestHeaders: REQ_HIERARCHICAL = %s\n", |
92695e5e | 760 | request->flags.hierarchical ? "SET" : "NOT SET"); |
7a2f978b | 761 | } |
762 | ||
31be8b80 | 763 | static int |
efb9218c | 764 | clientCheckContentLength(request_t * r) |
31be8b80 | 765 | { |
205080e2 | 766 | /* We only require a content-length for "upload" methods */ |
767 | if (!pumpMethod(r->method)) | |
0cdcddb9 | 768 | return 1; |
205080e2 | 769 | if (httpHeaderGetInt(&r->header, HDR_CONTENT_LENGTH) < 0) |
31be8b80 | 770 | return 0; |
771 | return 1; | |
772 | } | |
773 | ||
7a2f978b | 774 | static int |
50ddd7a4 | 775 | clientCachable(clientHttpRequest * http) |
7a2f978b | 776 | { |
23d92c64 | 777 | const char *url = http->uri; |
7a2f978b | 778 | request_t *req = http->request; |
779 | method_t method = req->method; | |
bd05e3e3 | 780 | aclCheck_t ch; |
781 | memset(&ch, '\0', sizeof(ch)); | |
782 | /* | |
783 | * Hopefully, nobody really wants 'no_cache' by client's IP | |
784 | * address, but if they do, this should work if they use IP | |
785 | * addresses in their ACLs, or if the client's address is in | |
786 | * the FQDN cache. | |
787 | * | |
788 | * This may not work yet for 'dst' and 'dst_domain' ACLs. | |
789 | */ | |
790 | ch.src_addr = http->conn->peer.sin_addr; | |
791 | ch.request = http->request; | |
79a51871 | 792 | /* |
793 | * aclCheckFast returns 1 for ALLOW and 0 for DENY. The default | |
794 | * is ALLOW, so we require 'no_cache DENY foo' in squid.conf | |
795 | * to indicate uncachable objects. | |
796 | */ | |
95291419 | 797 | if (!aclCheckFast(Config.accessList.noCache, &ch)) |
4b4cd312 | 798 | return 0; |
7a2f978b | 799 | if (req->protocol == PROTO_HTTP) |
800 | return httpCachable(method); | |
801 | /* FTP is always cachable */ | |
802 | if (req->protocol == PROTO_GOPHER) | |
803 | return gopherCachable(url); | |
804 | if (req->protocol == PROTO_WAIS) | |
805 | return 0; | |
806 | if (method == METHOD_CONNECT) | |
807 | return 0; | |
808 | if (method == METHOD_TRACE) | |
809 | return 0; | |
810 | if (req->protocol == PROTO_CACHEOBJ) | |
811 | return 0; | |
812 | return 1; | |
813 | } | |
814 | ||
815 | /* Return true if we can query our neighbors for this object */ | |
816 | static int | |
50ddd7a4 | 817 | clientHierarchical(clientHttpRequest * http) |
7a2f978b | 818 | { |
23d92c64 | 819 | const char *url = http->uri; |
7a2f978b | 820 | request_t *request = http->request; |
821 | method_t method = request->method; | |
822 | const wordlist *p = NULL; | |
823 | ||
824 | /* IMS needs a private key, so we can use the hierarchy for IMS only | |
825 | * if our neighbors support private keys */ | |
92695e5e | 826 | if (request->flags.ims && !neighbors_do_private_keys) |
7a2f978b | 827 | return 0; |
92695e5e | 828 | if (request->flags.auth) |
7a2f978b | 829 | return 0; |
830 | if (method == METHOD_TRACE) | |
831 | return 1; | |
832 | if (method != METHOD_GET) | |
833 | return 0; | |
834 | /* scan hierarchy_stoplist */ | |
835 | for (p = Config.hierarchy_stoplist; p; p = p->next) | |
836 | if (strstr(url, p->key)) | |
837 | return 0; | |
92695e5e | 838 | if (request->flags.loopdetect) |
7a2f978b | 839 | return 0; |
840 | if (request->protocol == PROTO_HTTP) | |
841 | return httpCachable(method); | |
842 | if (request->protocol == PROTO_GOPHER) | |
843 | return gopherCachable(url); | |
844 | if (request->protocol == PROTO_WAIS) | |
845 | return 0; | |
846 | if (request->protocol == PROTO_CACHEOBJ) | |
847 | return 0; | |
848 | return 1; | |
849 | } | |
850 | ||
cf50a0af | 851 | int |
7a2f978b | 852 | isTcpHit(log_type code) |
853 | { | |
854 | /* this should be a bitmap for better optimization */ | |
855 | if (code == LOG_TCP_HIT) | |
856 | return 1; | |
857 | if (code == LOG_TCP_IMS_HIT) | |
858 | return 1; | |
859 | if (code == LOG_TCP_REFRESH_FAIL_HIT) | |
860 | return 1; | |
861 | if (code == LOG_TCP_REFRESH_HIT) | |
862 | return 1; | |
863 | if (code == LOG_TCP_NEGATIVE_HIT) | |
864 | return 1; | |
865 | if (code == LOG_TCP_MEM_HIT) | |
866 | return 1; | |
867 | return 0; | |
868 | } | |
869 | ||
1c3e77cd | 870 | /* |
871 | * returns true if If-Range specs match reply, false otherwise | |
872 | */ | |
a9771e51 | 873 | static int |
874 | clientIfRangeMatch(clientHttpRequest * http, HttpReply * rep) | |
875 | { | |
876 | const TimeOrTag spec = httpHeaderGetTimeOrTag(&http->request->header, HDR_IF_RANGE); | |
877 | /* check for parsing falure */ | |
878 | if (!spec.valid) | |
879 | return 0; | |
880 | /* got an ETag? */ | |
881 | if (spec.tag.str) { | |
882 | ETag rep_tag = httpHeaderGetETag(&rep->header, HDR_ETAG); | |
ebb6e9a0 | 883 | debug(33, 3) ("clientIfRangeMatch: ETags: %s and %s\n", |
a9771e51 | 884 | spec.tag.str, rep_tag.str ? rep_tag.str : "<none>"); |
885 | if (!rep_tag.str) | |
ebb6e9a0 | 886 | return 0; /* entity has no etag to compare with! */ |
a9771e51 | 887 | if (spec.tag.weak || rep_tag.weak) { |
9834a631 | 888 | debug(33, 1) ("clientIfRangeMatch: Weak ETags are not allowed in If-Range: %s ? %s\n", |
a9771e51 | 889 | spec.tag.str, rep_tag.str); |
ebb6e9a0 | 890 | return 0; /* must use strong validator for sub-range requests */ |
a9771e51 | 891 | } |
892 | return etagIsEqual(&rep_tag, &spec.tag); | |
893 | } | |
894 | /* got modification time? */ | |
895 | if (spec.time >= 0) { | |
896 | return http->entry->lastmod <= spec.time; | |
897 | } | |
ebb6e9a0 | 898 | assert(0); /* should not happen */ |
a9771e51 | 899 | return 0; |
900 | } | |
901 | ||
e17d81d3 | 902 | /* adds appropriate Range headers if needed */ |
903 | static void | |
904 | clientBuildRangeHeader(clientHttpRequest * http, HttpReply * rep) | |
905 | { | |
5e2dba16 | 906 | HttpHeader *hdr = rep ? &rep->header : 0; |
e17d81d3 | 907 | const char *range_err = NULL; |
908 | assert(http->request->range); | |
909 | /* check if we still want to do ranges */ | |
9834a631 | 910 | if (!rep) |
911 | range_err = "no [parse-able] reply"; | |
912 | else if (rep->sline.status != HTTP_OK) | |
e17d81d3 | 913 | range_err = "wrong status code"; |
ebb6e9a0 | 914 | else if (httpHeaderHas(hdr, HDR_CONTENT_RANGE)) |
e17d81d3 | 915 | range_err = "origin server does ranges"; |
ebb6e9a0 | 916 | else if (rep->content_length < 0) |
e17d81d3 | 917 | range_err = "unknown length"; |
ebb6e9a0 | 918 | else if (rep->content_length != http->entry->mem_obj->reply->content_length) |
919 | range_err = "INCONSISTENT length"; /* a bug? */ | |
920 | else if (httpHeaderHas(&http->request->header, HDR_IF_RANGE) && !clientIfRangeMatch(http, rep)) | |
a9771e51 | 921 | range_err = "If-Range match failed"; |
ebb6e9a0 | 922 | else if (!httpHdrRangeCanonize(http->request->range, rep->content_length)) |
e17d81d3 | 923 | range_err = "canonization failed"; |
ebb6e9a0 | 924 | else if (httpHdrRangeIsComplex(http->request->range)) |
e17d81d3 | 925 | range_err = "too complex range header"; |
926 | /* get rid of our range specs on error */ | |
927 | if (range_err) { | |
cdedf7db | 928 | debug(33, 2) ("clientBuildRangeHeader: will not do ranges: %s.\n", range_err); |
e17d81d3 | 929 | httpHdrRangeDestroy(http->request->range); |
930 | http->request->range = NULL; | |
931 | } else { | |
932 | const int spec_count = http->request->range->specs.count; | |
cdedf7db | 933 | debug(33, 2) ("clientBuildRangeHeader: range spec count: %d clen: %d\n", |
e17d81d3 | 934 | spec_count, rep->content_length); |
935 | assert(spec_count > 0); | |
a9771e51 | 936 | /* ETags should not be returned with Partial Content replies? */ |
937 | httpHeaderDelById(hdr, HDR_ETAG); | |
ebb6e9a0 | 938 | /* append appropriate header(s) */ |
e17d81d3 | 939 | if (spec_count == 1) { |
940 | HttpHdrRangePos pos = HttpHdrRangeInitPos; | |
889b534a | 941 | const HttpHdrRangeSpec *spec = httpHdrRangeGetSpec(http->request->range, &pos); |
942 | assert(spec); | |
e17d81d3 | 943 | /* append Content-Range */ |
889b534a | 944 | httpHeaderAddContRange(hdr, *spec, rep->content_length); |
e17d81d3 | 945 | /* set new Content-Length to the actual number of OCTETs |
946 | * transmitted in the message-body */ | |
947 | httpHeaderDelById(hdr, HDR_CONTENT_LENGTH); | |
889b534a | 948 | httpHeaderPutInt(hdr, HDR_CONTENT_LENGTH, spec->length); |
949 | debug(33, 2) ("clientBuildRangeHeader: actual content length: %d\n", spec->length); | |
e17d81d3 | 950 | } else { |
951 | /* multipart! */ | |
952 | /* generate boundary string */ | |
953 | http->range_iter.boundary = httpHdrRangeBoundaryStr(http); | |
954 | /* delete old Content-Type, add ours */ | |
955 | httpHeaderDelById(hdr, HDR_CONTENT_TYPE); | |
956 | httpHeaderPutStrf(hdr, HDR_CONTENT_TYPE, | |
957 | "multipart/byteranges; boundary=\"%s\"", | |
958 | strBuf(http->range_iter.boundary)); | |
959 | /* no need for Content-Length in multipart responses */ | |
cded937d | 960 | /* but we must delete the original one if we cannot (yet) |
961 | * calculate the actual length */ | |
962 | httpHeaderDelById(hdr, HDR_CONTENT_LENGTH); | |
e17d81d3 | 963 | } |
964 | } | |
965 | } | |
966 | ||
d192d11f | 967 | /* filters out unwanted entries from original reply header |
968 | * adds extra entries if we have more info than origin server | |
969 | * adds Squid specific entries */ | |
2246b732 | 970 | static void |
eeb423fb | 971 | clientBuildReplyHeader(clientHttpRequest * http, HttpReply * rep) |
2246b732 | 972 | { |
973 | HttpHeader *hdr = &rep->header; | |
974 | int is_hit = isTcpHit(http->log_type); | |
7673173d | 975 | request_t *request = http->request; |
2246b732 | 976 | #if DONT_FILTER_THESE |
977 | /* but you might want to if you run Squid as an HTTP accelerator */ | |
d192d11f | 978 | /* httpHeaderDelById(hdr, HDR_ACCEPT_RANGES); */ |
2246b732 | 979 | httpHeaderDelById(hdr, HDR_ETAG); |
980 | #endif | |
981 | httpHeaderDelById(hdr, HDR_PROXY_CONNECTION); | |
982 | /* here: Keep-Alive is a field-name, not a connection directive! */ | |
983 | httpHeaderDelByName(hdr, "Keep-Alive"); | |
984 | /* remove Set-Cookie if a hit */ | |
985 | if (is_hit) | |
986 | httpHeaderDelById(hdr, HDR_SET_COOKIE); | |
987 | /* handle Connection header */ | |
988 | if (httpHeaderHas(hdr, HDR_CONNECTION)) { | |
989 | /* anything that matches Connection list member will be deleted */ | |
990 | String strConnection = httpHeaderGetList(hdr, HDR_CONNECTION); | |
991 | const HttpHeaderEntry *e; | |
992 | HttpHeaderPos pos = HttpHeaderInitPos; | |
7673173d | 993 | /* |
994 | * think: on-average-best nesting of the two loops (hdrEntry | |
995 | * and strListItem) @?@ | |
996 | */ | |
997 | /* | |
998 | * maybe we should delete standard stuff ("keep-alive","close") | |
999 | * from strConnection first? | |
1000 | */ | |
2246b732 | 1001 | while ((e = httpHeaderGetEntry(hdr, &pos))) { |
1002 | if (strListIsMember(&strConnection, strBuf(e->name), ',')) | |
1003 | httpHeaderDelAt(hdr, pos); | |
1004 | } | |
1005 | httpHeaderDelById(hdr, HDR_CONNECTION); | |
1006 | stringClean(&strConnection); | |
1007 | } | |
d192d11f | 1008 | /* Handle Ranges */ |
7673173d | 1009 | if (request->range) |
e17d81d3 | 1010 | clientBuildRangeHeader(http, rep); |
7673173d | 1011 | /* |
1012 | * Add Age header, not that our header must replace Age headers | |
1013 | * from other caches if any | |
1014 | */ | |
cc66f616 | 1015 | if (http->entry->timestamp > 0) { |
1016 | httpHeaderDelById(hdr, HDR_AGE); | |
7673173d | 1017 | /* |
1018 | * we do not follow HTTP/1.1 precisely here becuase we rely | |
1019 | * on Date header when computing entry->timestamp; we should | |
1020 | * be using _request_ time if Date header is not available | |
1021 | * or if it is out of sync | |
1022 | */ | |
cc66f616 | 1023 | httpHeaderPutInt(hdr, HDR_AGE, |
7673173d | 1024 | http->entry->timestamp <= squid_curtime ? |
1025 | squid_curtime - http->entry->timestamp : 0); | |
cc66f616 | 1026 | } |
2246b732 | 1027 | /* Append X-Cache */ |
1028 | httpHeaderPutStrf(hdr, HDR_X_CACHE, "%s from %s", | |
1029 | is_hit ? "HIT" : "MISS", getMyHostname()); | |
1030 | #if USE_CACHE_DIGESTS | |
1031 | /* Append X-Cache-Lookup: -- temporary hack, to be removed @?@ @?@ */ | |
1032 | httpHeaderPutStrf(hdr, HDR_X_CACHE_LOOKUP, "%s from %s:%d", | |
1033 | http->lookup_type ? http->lookup_type : "NONE", | |
1034 | getMyHostname(), Config.Port.http->i); | |
1035 | #endif | |
1036 | /* Only replies with valid Content-Length can be sent with keep-alive */ | |
7673173d | 1037 | if (request->method != METHOD_HEAD && |
2246b732 | 1038 | http->entry->mem_obj->reply->content_length < 0) |
92695e5e | 1039 | request->flags.proxy_keepalive = 0; |
2246b732 | 1040 | /* Signal keep-alive if needed */ |
7673173d | 1041 | httpHeaderPutStr(hdr, |
1042 | http->flags.accel ? HDR_CONNECTION : HDR_PROXY_CONNECTION, | |
92695e5e | 1043 | request->flags.proxy_keepalive ? "keep-alive" : "close"); |
2246b732 | 1044 | #if ADD_X_REQUEST_URI |
1045 | /* | |
1046 | * Knowing the URI of the request is useful when debugging persistent | |
1047 | * connections in a client; we cannot guarantee the order of http headers, | |
1048 | * but X-Request-URI is likely to be the very last header to ease use from a | |
1049 | * debugger [hdr->entries.count-1]. | |
1050 | */ | |
eeb423fb | 1051 | httpHeaderPutStr(hdr, HDR_X_REQUEST_URI, |
2246b732 | 1052 | http->entry->mem_obj->url ? http->entry->mem_obj->url : http->uri); |
1053 | #endif | |
1054 | } | |
1055 | ||
eeb423fb | 1056 | static HttpReply * |
2246b732 | 1057 | clientBuildReply(clientHttpRequest * http, const char *buf, size_t size) |
1058 | { | |
1059 | HttpReply *rep = httpReplyCreate(); | |
2246b732 | 1060 | if (httpReplyParse(rep, buf)) { |
1061 | /* enforce 1.0 reply version */ | |
1062 | rep->sline.version = 1.0; | |
1063 | /* do header conversions */ | |
1064 | clientBuildReplyHeader(http, rep); | |
d192d11f | 1065 | /* if we do ranges, change status to "Partial Content" */ |
1066 | if (http->request->range) | |
1067 | httpStatusLineSet(&rep->sline, rep->sline.version, HTTP_PARTIAL_CONTENT, NULL); | |
2246b732 | 1068 | } else { |
1069 | /* parsing failure, get rid of the invalid reply */ | |
1070 | httpReplyDestroy(rep); | |
1071 | rep = NULL; | |
9834a631 | 1072 | /* if we were going to do ranges, backoff */ |
1073 | if (http->request->range) | |
782b5f40 | 1074 | clientBuildRangeHeader(http, rep); /* will fail and destroy request->range */ |
2246b732 | 1075 | } |
1076 | return rep; | |
1077 | } | |
7a2f978b | 1078 | |
85071fe3 | 1079 | /* |
1080 | * clientCacheHit should only be called until the HTTP reply headers | |
1081 | * have been parsed. Normally this should be a single call, but | |
1082 | * it might take more than one. As soon as we have the headers, | |
1083 | * we hand off to clientSendMoreData, clientProcessExpired, or | |
1084 | * clientProcessMiss. | |
1085 | */ | |
4c323c5f | 1086 | static void |
7a2f978b | 1087 | clientCacheHit(void *data, char *buf, ssize_t size) |
1088 | { | |
1089 | clientHttpRequest *http = data; | |
49d3fcb0 | 1090 | StoreEntry *e = http->entry; |
1091 | MemObject *mem; | |
1092 | request_t *r = http->request; | |
93f9abd0 | 1093 | debug(33, 3) ("clientCacheHit: %s, %d bytes\n", http->uri, (int) size); |
49d3fcb0 | 1094 | if (http->entry == NULL) { |
cc27d775 | 1095 | memFree(MEM_CLIENT_SOCK_BUF, buf); |
93f9abd0 | 1096 | debug(33, 3) ("clientCacheHit: request aborted\n"); |
49d3fcb0 | 1097 | return; |
1098 | } else if (size < 0) { | |
7a2f978b | 1099 | /* swap in failure */ |
cc27d775 | 1100 | memFree(MEM_CLIENT_SOCK_BUF, buf); |
93f9abd0 | 1101 | debug(33, 3) ("clientCacheHit: swapin failure for %s\n", http->uri); |
7a2f978b | 1102 | http->log_type = LOG_TCP_SWAPFAIL_MISS; |
fdfc0d63 | 1103 | if ((e = http->entry)) { |
1104 | http->entry = NULL; | |
1105 | storeUnregister(e, http); | |
fdfc0d63 | 1106 | storeUnlockObject(e); |
1107 | } | |
fb63215a | 1108 | clientProcessMiss(http); |
49d3fcb0 | 1109 | return; |
1110 | } | |
1111 | assert(size > 0); | |
1112 | mem = e->mem_obj; | |
1113 | assert(e->store_status != STORE_ABORTED); | |
1114 | if (mem->reply->sline.status == 0) { | |
1115 | /* | |
1116 | * we don't have full reply headers yet; either wait for more or | |
1117 | * punt to clientProcessMiss. | |
1118 | */ | |
25944e56 | 1119 | if (e->mem_status == IN_MEMORY || e->store_status == STORE_OK) { |
cc27d775 | 1120 | memFree(MEM_CLIENT_SOCK_BUF, buf); |
49d3fcb0 | 1121 | clientProcessMiss(http); |
cc27d775 | 1122 | } else if (size == CLIENT_SOCK_SZ && http->out.offset == 0) { |
1123 | memFree(MEM_CLIENT_SOCK_BUF, buf); | |
49d3fcb0 | 1124 | clientProcessMiss(http); |
1125 | } else { | |
1126 | debug(33, 3) ("clientCacheHit: waiting for HTTP reply headers\n"); | |
1127 | storeClientCopy(e, | |
1128 | http->out.offset + size, | |
1129 | http->out.offset, | |
cc27d775 | 1130 | CLIENT_SOCK_SZ, |
49d3fcb0 | 1131 | buf, |
1132 | clientCacheHit, | |
1133 | http); | |
1134 | } | |
1135 | return; | |
1136 | } | |
1137 | /* | |
1138 | * Got the headers, now grok them | |
1139 | */ | |
1140 | assert(http->log_type == LOG_TCP_HIT); | |
1141 | if (checkNegativeHit(e)) { | |
1142 | http->log_type = LOG_TCP_NEGATIVE_HIT; | |
1143 | clientSendMoreData(data, buf, size); | |
d657ffad | 1144 | } else if (r->method == METHOD_HEAD) { |
1145 | /* | |
1146 | * RFC 2068 seems to indicate there is no "conditional HEAD" | |
1147 | * request. We cannot validate a cached object for a HEAD | |
1148 | * request, nor can we return 304. | |
1149 | */ | |
1150 | if (e->mem_status == IN_MEMORY) | |
1151 | http->log_type = LOG_TCP_MEM_HIT; | |
1152 | clientSendMoreData(data, buf, size); | |
e25c139f | 1153 | } else if (refreshCheck(e, r, 0) && !http->flags.internal) { |
49d3fcb0 | 1154 | /* |
1155 | * We hold a stale copy; it needs to be validated | |
1156 | */ | |
0cdcddb9 | 1157 | if (e->lastmod < 0) { |
1158 | /* | |
1c3e77cd | 1159 | * Previous reply didn't have a Last-Modified header, |
1160 | * we cannot revalidate it. | |
1161 | */ | |
1162 | http->log_type = LOG_TCP_MISS; | |
1163 | clientProcessMiss(http); | |
92695e5e | 1164 | } else if (r->flags.nocache) { |
cbe3a719 | 1165 | /* |
1166 | * This did not match a refresh pattern that overrides no-cache | |
1167 | * we should honour the client no-cache header. | |
1168 | */ | |
1169 | http->log_type = LOG_TCP_CLIENT_REFRESH_MISS; | |
1170 | clientProcessMiss(http); | |
1c3e77cd | 1171 | } else if (r->protocol == PROTO_HTTP) { |
cbe3a719 | 1172 | /* |
1173 | * Object needs to be revalidated | |
1174 | * XXX This could apply to FTP as well, if Last-Modified is known. | |
1175 | */ | |
49d3fcb0 | 1176 | http->log_type = LOG_TCP_REFRESH_MISS; |
1177 | clientProcessExpired(http); | |
1178 | } else { | |
cbe3a719 | 1179 | /* |
1180 | * We don't know how to re-validate other protocols. Handle | |
1181 | * them as if the object has expired. | |
1182 | */ | |
49d3fcb0 | 1183 | http->log_type = LOG_TCP_MISS; |
1184 | clientProcessMiss(http); | |
1185 | } | |
cc27d775 | 1186 | memFree(MEM_CLIENT_SOCK_BUF, buf); |
92695e5e | 1187 | } else if (r->flags.ims) { |
49d3fcb0 | 1188 | /* |
1189 | * Handle If-Modified-Since requests from the client | |
1190 | */ | |
1191 | if (mem->reply->sline.status != HTTP_OK) { | |
1192 | debug(33, 4) ("clientCacheHit: Reply code %d != 200\n", | |
1193 | mem->reply->sline.status); | |
cc27d775 | 1194 | memFree(MEM_CLIENT_SOCK_BUF, buf); |
49d3fcb0 | 1195 | clientProcessMiss(http); |
1196 | } else if (modifiedSince(e, http->request)) { | |
815ef411 | 1197 | http->log_type = LOG_TCP_IMS_HIT; |
49d3fcb0 | 1198 | clientSendMoreData(data, buf, size); |
1199 | } else { | |
1200 | MemBuf mb = httpPacked304Reply(e->mem_obj->reply); | |
1201 | http->log_type = LOG_TCP_IMS_HIT; | |
cc27d775 | 1202 | memFree(MEM_CLIENT_SOCK_BUF, buf); |
49d3fcb0 | 1203 | storeUnregister(e, http); |
1204 | storeUnlockObject(e); | |
92695e5e | 1205 | e = clientCreateStoreEntry(http, http->request->method, null_request_flags); |
49d3fcb0 | 1206 | http->entry = e; |
1207 | httpReplyParse(e->mem_obj->reply, mb.buf); | |
1208 | storeAppend(e, mb.buf, mb.size); | |
1209 | memBufClean(&mb); | |
1210 | storeComplete(e); | |
1211 | } | |
1212 | } else { | |
1213 | /* | |
1214 | * plain ol' cache hit | |
1215 | */ | |
1216 | if (e->mem_status == IN_MEMORY) | |
1217 | http->log_type = LOG_TCP_MEM_HIT; | |
1218 | clientSendMoreData(data, buf, size); | |
7a2f978b | 1219 | } |
1220 | } | |
1221 | ||
d192d11f | 1222 | |
1223 | /* extracts a "range" from *buf and appends them to mb, updating all offsets and such */ | |
1224 | static void | |
ebb6e9a0 | 1225 | clientPackRange(clientHttpRequest * http, HttpHdrRangeIter * i, const char **buf, ssize_t * size, MemBuf * mb) |
d192d11f | 1226 | { |
1227 | const size_t copy_sz = i->debt_size <= *size ? i->debt_size : *size; | |
1228 | off_t body_off = http->out.offset - i->prefix_size; | |
1229 | assert(*size > 0); | |
889b534a | 1230 | assert(i->spec); |
d192d11f | 1231 | /* intersection of "have" and "need" ranges must not be empty */ |
889b534a | 1232 | assert(body_off < i->spec->offset + i->spec->length); |
1233 | assert(body_off + *size > i->spec->offset); | |
d192d11f | 1234 | /* put boundary and headers at the beginning of range in a multi-range */ |
889b534a | 1235 | if (http->request->range->specs.count > 1 && i->debt_size == i->spec->length) { |
ebb6e9a0 | 1236 | HttpReply *rep = http->entry->mem_obj ? /* original reply */ |
1237 | http->entry->mem_obj->reply : NULL; | |
d192d11f | 1238 | HttpHeader hdr; |
1239 | Packer p; | |
1240 | assert(rep); | |
1241 | /* put boundary */ | |
cdedf7db | 1242 | debug(33, 5) ("clientPackRange: appending boundary: %s\n", strBuf(i->boundary)); |
d192d11f | 1243 | /* rfc2046 requires to _prepend_ boundary with <crlf>! */ |
1244 | memBufPrintf(mb, "\r\n--%s\r\n", strBuf(i->boundary)); | |
1245 | httpHeaderInit(&hdr, hoReply); | |
1246 | if (httpHeaderHas(&rep->header, HDR_CONTENT_TYPE)) | |
1247 | httpHeaderPutStr(&hdr, HDR_CONTENT_TYPE, httpHeaderGetStr(&rep->header, HDR_CONTENT_TYPE)); | |
889b534a | 1248 | httpHeaderAddContRange(&hdr, *i->spec, rep->content_length); |
d192d11f | 1249 | packerToMemInit(&p, mb); |
1250 | httpHeaderPackInto(&hdr, &p); | |
1251 | packerClean(&p); | |
1252 | httpHeaderClean(&hdr); | |
1253 | /* append <crlf> (we packed a header, not a reply */ | |
1254 | memBufPrintf(mb, "\r\n"); | |
1255 | } | |
1256 | /* append */ | |
cdedf7db | 1257 | debug(33, 3) ("clientPackRange: appending %d bytes\n", copy_sz); |
d192d11f | 1258 | memBufAppend(mb, *buf, copy_sz); |
1259 | /* update offsets */ | |
1260 | *size -= copy_sz; | |
1261 | i->debt_size -= copy_sz; | |
1262 | body_off += copy_sz; | |
1263 | *buf += copy_sz; | |
ebb6e9a0 | 1264 | http->out.offset = body_off + i->prefix_size; /* sync */ |
d192d11f | 1265 | /* paranoid check */ |
1266 | assert(*size >= 0 && i->debt_size >= 0); | |
1267 | } | |
1268 | ||
889b534a | 1269 | /* returns true if there is still data available to pack more ranges |
1270 | * increments iterator "i" | |
1271 | * used by clientPackMoreRanges */ | |
1272 | static int | |
ebb6e9a0 | 1273 | clientCanPackMoreRanges(const clientHttpRequest * http, HttpHdrRangeIter * i, ssize_t size) |
889b534a | 1274 | { |
1275 | /* first update "i" if needed */ | |
1276 | if (!i->debt_size) { | |
1277 | if ((i->spec = httpHdrRangeGetSpec(http->request->range, &i->pos))) | |
1278 | i->debt_size = i->spec->length; | |
1279 | } | |
ebb6e9a0 | 1280 | assert(!i->debt_size == !i->spec); /* paranoid sync condition */ |
889b534a | 1281 | /* continue condition: need_more_data && have_more_data */ |
1282 | return i->spec && size > 0; | |
1283 | } | |
d192d11f | 1284 | |
1285 | /* extracts "ranges" from buf and appends them to mb, updating all offsets and such */ | |
1286 | /* returns true if we need more data */ | |
1287 | static int | |
ebb6e9a0 | 1288 | clientPackMoreRanges(clientHttpRequest * http, const char *buf, ssize_t size, MemBuf * mb) |
d192d11f | 1289 | { |
1290 | HttpHdrRangeIter *i = &http->range_iter; | |
d192d11f | 1291 | /* offset in range specs does not count the prefix of an http msg */ |
1292 | off_t body_off = http->out.offset - i->prefix_size; | |
1293 | assert(size >= 0); | |
9834a631 | 1294 | /* check: reply was parsed and range iterator was initialized */ |
1295 | assert(i->prefix_size > 0); | |
d192d11f | 1296 | /* filter out data according to range specs */ |
1297 | /* note: order of loop conditions is significant! */ | |
889b534a | 1298 | while (clientCanPackMoreRanges(http, i, size)) { |
ebb6e9a0 | 1299 | off_t start; /* offset of still missing data */ |
889b534a | 1300 | assert(i->spec); |
1301 | start = i->spec->offset + i->spec->length - i->debt_size; | |
cdedf7db | 1302 | debug(33, 2) ("clientPackMoreRanges: in: offset: %d size: %d\n", |
ebb6e9a0 | 1303 | (int) body_off, size); |
cdedf7db | 1304 | debug(33, 2) ("clientPackMoreRanges: out: start: %d spec[%d]: [%d, %d), len: %d debt: %d\n", |
ebb6e9a0 | 1305 | (int) start, (int) i->pos, i->spec->offset, (int) (i->spec->offset + i->spec->length), i->spec->length, i->debt_size); |
1306 | assert(body_off <= start); /* we did not miss it */ | |
d192d11f | 1307 | /* skip up to start */ |
1308 | if (body_off + size > start) { | |
1309 | const size_t skip_size = start - body_off; | |
1310 | body_off = start; | |
1311 | size -= skip_size; | |
1312 | buf += skip_size; | |
1313 | } else { | |
1314 | /* has not reached start yet */ | |
1315 | body_off += size; | |
1316 | size = 0; | |
1317 | buf = NULL; | |
1318 | } | |
1319 | /* put next chunk if any */ | |
1320 | if (size) { | |
ebb6e9a0 | 1321 | http->out.offset = body_off + i->prefix_size; /* sync */ |
d192d11f | 1322 | clientPackRange(http, i, &buf, &size, mb); |
ebb6e9a0 | 1323 | body_off = http->out.offset - i->prefix_size; /* sync */ |
d192d11f | 1324 | } |
1325 | } | |
ebb6e9a0 | 1326 | assert(!i->debt_size == !i->spec); /* paranoid sync condition */ |
cdedf7db | 1327 | debug(33, 2) ("clientPackMoreRanges: buf exhausted: in: offset: %d size: %d need_more: %d\n", |
ebb6e9a0 | 1328 | (int) body_off, size, i->debt_size); |
889b534a | 1329 | if (i->debt_size) { |
1330 | debug(33, 2) ("clientPackMoreRanges: need more: spec[%d]: [%d, %d), len: %d\n", | |
ebb6e9a0 | 1331 | (int) i->pos, i->spec->offset, (int) (i->spec->offset + i->spec->length), i->spec->length); |
889b534a | 1332 | /* skip the data we do not need if possible */ |
ebb6e9a0 | 1333 | if (i->debt_size == i->spec->length) /* at the start of the cur. spec */ |
889b534a | 1334 | body_off = i->spec->offset; |
d192d11f | 1335 | else |
889b534a | 1336 | assert(body_off == i->spec->offset + i->spec->length - i->debt_size); |
ebb6e9a0 | 1337 | } else if (http->request->range->specs.count > 1) { |
d192d11f | 1338 | /* put terminating boundary for multiparts */ |
1339 | memBufPrintf(mb, "\r\n--%s--\r\n", strBuf(i->boundary)); | |
1340 | } | |
ebb6e9a0 | 1341 | http->out.offset = body_off + i->prefix_size; /* sync */ |
889b534a | 1342 | return i->debt_size > 0; |
d192d11f | 1343 | } |
1344 | ||
2246b732 | 1345 | /* |
1346 | * accepts chunk of a http message in buf, parses prefix, filters headers and | |
1347 | * such, writes processed message to the client's socket | |
1348 | */ | |
4c323c5f | 1349 | static void |
7a2f978b | 1350 | clientSendMoreData(void *data, char *buf, ssize_t size) |
1351 | { | |
1352 | clientHttpRequest *http = data; | |
1353 | StoreEntry *entry = http->entry; | |
1354 | ConnStateData *conn = http->conn; | |
1355 | int fd = conn->fd; | |
2246b732 | 1356 | HttpReply *rep = NULL; |
2246b732 | 1357 | const char *body_buf = buf; |
1358 | ssize_t body_size = size; | |
9f086470 | 1359 | MemBuf mb; |
bcd3b08a | 1360 | ssize_t check_size = 0; |
93f9abd0 | 1361 | debug(33, 5) ("clientSendMoreData: %s, %d bytes\n", http->uri, (int) size); |
cc27d775 | 1362 | assert(size <= CLIENT_SOCK_SZ); |
40defb17 | 1363 | assert(http->request != NULL); |
93f9abd0 | 1364 | debug(33, 5) ("clientSendMoreData: FD %d '%s', out.offset=%d \n", |
5f6ac48b | 1365 | fd, storeUrl(entry), (int) http->out.offset); |
7a2f978b | 1366 | if (conn->chr != http) { |
1367 | /* there is another object in progress, defer this one */ | |
aebbcd07 | 1368 | debug(33, 1) ("clientSendMoreData: Deferring %s\n", storeUrl(entry)); |
cc27d775 | 1369 | memFree(MEM_CLIENT_SOCK_BUF, buf); |
7a2f978b | 1370 | return; |
fdfc0d63 | 1371 | } else if (entry && entry->store_status == STORE_ABORTED) { |
d6e928c9 | 1372 | /* call clientWriteComplete so the client socket gets closed */ |
1373 | clientWriteComplete(fd, NULL, 0, COMM_OK, http); | |
cc27d775 | 1374 | memFree(MEM_CLIENT_SOCK_BUF, buf); |
7a2f978b | 1375 | return; |
1376 | } else if (size < 0) { | |
d6e928c9 | 1377 | /* call clientWriteComplete so the client socket gets closed */ |
1378 | clientWriteComplete(fd, NULL, 0, COMM_OK, http); | |
cc27d775 | 1379 | memFree(MEM_CLIENT_SOCK_BUF, buf); |
7a2f978b | 1380 | return; |
1381 | } else if (size == 0) { | |
d6e928c9 | 1382 | /* call clientWriteComplete so the client socket gets closed */ |
1383 | clientWriteComplete(fd, NULL, 0, COMM_OK, http); | |
cc27d775 | 1384 | memFree(MEM_CLIENT_SOCK_BUF, buf); |
7a2f978b | 1385 | return; |
1386 | } | |
40defb17 | 1387 | if (http->out.offset == 0) { |
7a2f978b | 1388 | if (Config.onoff.log_mime_hdrs) { |
2334c194 | 1389 | size_t k; |
1390 | if ((k = headersEnd(buf, size))) { | |
7a2f978b | 1391 | safe_free(http->al.headers.reply); |
1afe05c5 | 1392 | http->al.headers.reply = xcalloc(k + 1, 1); |
2334c194 | 1393 | xstrncpy(http->al.headers.reply, buf, k); |
7a2f978b | 1394 | } |
1395 | } | |
2246b732 | 1396 | rep = clientBuildReply(http, buf, size); |
1397 | if (rep) { | |
1398 | body_size = size - rep->hdr_sz; | |
1399 | assert(body_size >= 0); | |
1f7e91a1 | 1400 | body_buf = buf + rep->hdr_sz; |
d192d11f | 1401 | http->range_iter.prefix_size = rep->hdr_sz; |
2246b732 | 1402 | debug(33, 3) ("clientSendMoreData: Appending %d bytes after %d bytes of headers\n", |
1403 | body_size, rep->hdr_sz); | |
cc27d775 | 1404 | } else if (size < CLIENT_SOCK_SZ && entry->store_status == STORE_PENDING) { |
9f086470 | 1405 | /* wait for more to arrive */ |
1406 | storeClientCopy(entry, | |
1407 | http->out.offset + size, | |
1408 | http->out.offset, | |
cc27d775 | 1409 | CLIENT_SOCK_SZ, |
9f086470 | 1410 | buf, |
1411 | clientSendMoreData, | |
1412 | http); | |
1413 | return; | |
7a2f978b | 1414 | } |
d192d11f | 1415 | /* reset range iterator */ |
1416 | http->range_iter.pos = HttpHdrRangeInitPos; | |
7a2f978b | 1417 | } |
7a2f978b | 1418 | if (http->request->method == METHOD_HEAD) { |
9f086470 | 1419 | if (rep) { |
1420 | /* do not forward body for HEAD replies */ | |
1421 | body_size = 0; | |
9f086470 | 1422 | http->flags.done_copying = 1; |
1423 | } else { | |
782b5f40 | 1424 | /* |
1425 | * If we are here, then store_status == STORE_OK and it | |
1426 | * seems we have a HEAD repsponse which is missing the | |
1427 | * empty end-of-headers line (home.mira.net, phttpd/0.99.72 | |
1428 | * does this). Because clientBuildReply() fails we just | |
1429 | * call this reply a body, set the done_copying flag and | |
1430 | * continue... | |
1431 | */ | |
1432 | http->flags.done_copying = 1; | |
7a2f978b | 1433 | } |
1434 | } | |
d192d11f | 1435 | /* write headers and/or body if any */ |
1f7e91a1 | 1436 | assert(rep || (body_buf && body_size)); |
9f086470 | 1437 | /* init mb; put status line and headers if any */ |
1438 | if (rep) { | |
1439 | mb = httpReplyPack(rep); | |
bcd3b08a | 1440 | http->out.offset += rep->hdr_sz; |
1441 | check_size += rep->hdr_sz; | |
9f086470 | 1442 | httpReplyDestroy(rep); |
1443 | rep = NULL; | |
1444 | } else { | |
1445 | /* leave space for growth incase we do ranges */ | |
cc27d775 | 1446 | memBufInit(&mb, CLIENT_SOCK_SZ, 2 * CLIENT_SOCK_SZ); |
9f086470 | 1447 | } |
1448 | /* append body if any */ | |
1f7e91a1 | 1449 | if (body_buf && body_size) { |
9f086470 | 1450 | if (http->request->range) { |
bcd3b08a | 1451 | /* Only GET requests should have ranges */ |
1452 | assert(http->request->method == METHOD_GET); | |
1453 | /* clientPackMoreRanges() updates http->out.offset */ | |
9f086470 | 1454 | /* force the end of the transfer if we are done */ |
1455 | if (!clientPackMoreRanges(http, body_buf, body_size, &mb)) | |
1456 | http->flags.done_copying = 1; | |
2246b732 | 1457 | } else { |
bcd3b08a | 1458 | http->out.offset += body_size; |
1459 | check_size += body_size; | |
9f086470 | 1460 | memBufAppend(&mb, body_buf, body_size); |
2246b732 | 1461 | } |
2246b732 | 1462 | } |
bbe3cbdc | 1463 | if (!http->request->range && http->request->method == METHOD_GET) |
bcd3b08a | 1464 | assert(check_size == size); |
9f086470 | 1465 | /* write */ |
1466 | comm_write_mbuf(fd, mb, clientWriteComplete, http); | |
2246b732 | 1467 | /* if we don't do it, who will? */ |
cc27d775 | 1468 | memFree(MEM_CLIENT_SOCK_BUF, buf); |
7a2f978b | 1469 | } |
1470 | ||
1a92a1e2 | 1471 | static |
1472 | void | |
1473 | clientKeepaliveNextRequest(clientHttpRequest * http) | |
1474 | { | |
1475 | ConnStateData *conn = http->conn; | |
1476 | StoreEntry *entry; | |
ebb6e9a0 | 1477 | debug(33, 3) ("clientKeepaliveNextRequest: FD %d\n", conn->fd); |
1a92a1e2 | 1478 | conn->defer.until = 0; /* Kick it to read a new request */ |
1479 | httpRequestFree(http); | |
1480 | if ((http = conn->chr) != NULL) { | |
1481 | debug(33, 1) ("clientKeepaliveNextRequest: FD %d Sending next\n", | |
1482 | conn->fd); | |
1483 | entry = http->entry; | |
1484 | if (0 == storeClientCopyPending(entry, http)) { | |
1485 | if (entry->store_status == STORE_ABORTED) | |
c07aed63 | 1486 | debug(33, 0) ("clientKeepaliveNextRequest: entry->swap_status == STORE_ABORTED\n"); |
1a92a1e2 | 1487 | storeClientCopy(entry, |
1488 | http->out.offset, | |
1489 | http->out.offset, | |
cc27d775 | 1490 | CLIENT_SOCK_SZ, |
1491 | memAllocate(MEM_CLIENT_SOCK_BUF), | |
1a92a1e2 | 1492 | clientSendMoreData, |
1493 | http); | |
1494 | } | |
1495 | } else { | |
c07aed63 | 1496 | debug(33, 5) ("clientKeepaliveNextRequest: FD %d reading next request\n", |
1a92a1e2 | 1497 | conn->fd); |
1498 | fd_note(conn->fd, "Reading next request"); | |
1499 | /* | |
1500 | * Set the timeout BEFORE calling clientReadRequest(). | |
1501 | */ | |
1502 | commSetTimeout(conn->fd, 15, requestTimeout, conn); | |
1503 | clientReadRequest(conn->fd, conn); /* Read next request */ | |
1504 | /* | |
1505 | * Note, the FD may be closed at this point. | |
1506 | */ | |
1507 | } | |
1508 | } | |
1509 | ||
fc5d6f7f | 1510 | static void |
79a15e0a | 1511 | clientWriteComplete(int fd, char *bufnotused, size_t size, int errflag, void *data) |
7a2f978b | 1512 | { |
1513 | clientHttpRequest *http = data; | |
7a2f978b | 1514 | StoreEntry *entry = http->entry; |
b34ed725 | 1515 | int done; |
7a2f978b | 1516 | http->out.size += size; |
93f9abd0 | 1517 | debug(33, 5) ("clientWriteComplete: FD %d, sz %d, err %d, off %d, len %d\n", |
007b8be4 | 1518 | fd, size, errflag, (int) http->out.offset, entry ? objectLen(entry) : 0); |
d8b83480 | 1519 | if (size > 0) { |
ea285003 | 1520 | kb_incr(&Counter.client_http.kbytes_out, size); |
1521 | if (isTcpHit(http->log_type)) | |
d8b83480 | 1522 | kb_incr(&Counter.client_http.hit_kbytes_out, size); |
1523 | } | |
7a2f978b | 1524 | if (errflag) { |
e55650e3 | 1525 | /* |
1526 | * just close the socket, httpRequestFree will abort if needed | |
1527 | */ | |
7a2f978b | 1528 | comm_close(fd); |
fdfc0d63 | 1529 | } else if (NULL == entry) { |
1530 | comm_close(fd); /* yuk */ | |
7a2f978b | 1531 | } else if (entry->store_status == STORE_ABORTED) { |
7a2f978b | 1532 | comm_close(fd); |
a200bbd2 | 1533 | } else if ((done = clientCheckTransferDone(http)) != 0 || size == 0) { |
93f9abd0 | 1534 | debug(33, 5) ("clientWriteComplete: FD %d transfer is DONE\n", fd); |
7a2f978b | 1535 | /* We're finished case */ |
c07aed63 | 1536 | if (http->entry->mem_obj->reply->content_length < 0) { |
ebb6e9a0 | 1537 | debug(33, 5) ("clientWriteComplete: closing, content_length < 0\n"); |
c07aed63 | 1538 | comm_close(fd); |
1539 | } else if (!done) { | |
ebb6e9a0 | 1540 | debug(33, 5) ("clientWriteComplete: closing, !done\n"); |
c07aed63 | 1541 | comm_close(fd); |
d46a87a8 | 1542 | } else if (EBIT_TEST(entry->flags, ENTRY_BAD_LENGTH)) { |
ebb6e9a0 | 1543 | debug(33, 5) ("clientWriteComplete: closing, ENTRY_BAD_LENGTH\n"); |
7a2f978b | 1544 | comm_close(fd); |
92695e5e | 1545 | } else if (http->request->flags.proxy_keepalive) { |
93f9abd0 | 1546 | debug(33, 5) ("clientWriteComplete: FD %d Keeping Alive\n", fd); |
1a92a1e2 | 1547 | clientKeepaliveNextRequest(http); |
7a2f978b | 1548 | } else { |
1549 | comm_close(fd); | |
1550 | } | |
1551 | } else { | |
1552 | /* More data will be coming from primary server; register with | |
1553 | * storage manager. */ | |
0e473d70 | 1554 | if (entry->store_status == STORE_ABORTED) |
6cf028ab | 1555 | debug(33, 0) ("clientWriteComplete 2: entry->swap_status == STORE_ABORTED\n"); |
7a2f978b | 1556 | storeClientCopy(entry, |
1557 | http->out.offset, | |
1558 | http->out.offset, | |
cc27d775 | 1559 | CLIENT_SOCK_SZ, |
1560 | memAllocate(MEM_CLIENT_SOCK_BUF), | |
7a2f978b | 1561 | clientSendMoreData, |
1562 | http); | |
1563 | } | |
1564 | } | |
1565 | ||
038eb4ed | 1566 | /* |
99edd1c3 | 1567 | * client issued a request with an only-if-cached cache-control directive; |
038eb4ed | 1568 | * we did not find a cached object that can be returned without |
99edd1c3 | 1569 | * contacting other servers; |
038eb4ed | 1570 | * respond with a 504 (Gateway Timeout) as suggested in [RFC 2068] |
1571 | */ | |
1572 | static void | |
1573 | clientProcessOnlyIfCachedMiss(clientHttpRequest * http) | |
1574 | { | |
1575 | char *url = http->uri; | |
1576 | request_t *r = http->request; | |
1577 | ErrorState *err = NULL; | |
1578 | debug(33, 4) ("clientProcessOnlyIfCachedMiss: '%s %s'\n", | |
1579 | RequestMethodStr[r->method], url); | |
038eb4ed | 1580 | http->al.http.code = HTTP_GATEWAY_TIMEOUT; |
1581 | err = errorCon(ERR_ONLY_IF_CACHED_MISS, HTTP_GATEWAY_TIMEOUT); | |
1582 | err->request = requestLink(r); | |
1583 | err->src_addr = http->conn->peer.sin_addr; | |
92695e5e | 1584 | http->entry = clientCreateStoreEntry(http, r->method, null_request_flags); |
038eb4ed | 1585 | errorAppendEntry(http->entry, err); |
1586 | } | |
1587 | ||
50ddd7a4 | 1588 | static log_type |
1589 | clientProcessRequest2(clientHttpRequest * http) | |
1590 | { | |
1591 | const request_t *r = http->request; | |
9f086470 | 1592 | const cache_key *key; |
50ddd7a4 | 1593 | StoreEntry *e; |
0c7ccf77 | 1594 | key = storeKeyPublic(http->uri, r->method); |
2f9aa365 | 1595 | e = http->entry = storeGetPublic(http->uri, r->method); |
0c7ccf77 | 1596 | if (r->method == METHOD_HEAD && e == NULL) { |
1597 | /* We can generate a HEAD reply from a cached GET object */ | |
1598 | key = storeKeyPublic(http->uri, METHOD_GET); | |
2f9aa365 | 1599 | e = http->entry = storeGetPublic(http->uri, METHOD_GET); |
0c7ccf77 | 1600 | } |
6cfa8966 | 1601 | #if USE_CACHE_DIGESTS |
57b1ff70 | 1602 | http->lookup_type = e ? "HIT" : "MISS"; |
1ca847dd | 1603 | #endif |
49d3fcb0 | 1604 | if (NULL == e) { |
50ddd7a4 | 1605 | /* this object isn't in the cache */ |
1606 | return LOG_TCP_MISS; | |
50ddd7a4 | 1607 | } else if (!storeEntryValidToSend(e)) { |
50ddd7a4 | 1608 | http->entry = NULL; |
1609 | return LOG_TCP_MISS; | |
d46a87a8 | 1610 | } else if (EBIT_TEST(e->flags, ENTRY_SPECIAL)) { |
abe471ef | 1611 | /* Special entries are always hits, no matter what the client says */ |
1612 | http->entry = e; | |
1613 | return LOG_TCP_HIT; | |
9f60cfdf | 1614 | #if HTTP_VIOLATIONS |
92695e5e | 1615 | } else if (r->flags.nocache_hack) { |
cbe3a719 | 1616 | http->entry = NULL; |
50ddd7a4 | 1617 | ipcacheReleaseInvalid(r->host); |
cbe3a719 | 1618 | return LOG_TCP_CLIENT_REFRESH_MISS; |
9f60cfdf | 1619 | #endif |
92695e5e | 1620 | } else if (r->flags.nocache) { |
50ddd7a4 | 1621 | http->entry = NULL; |
cbe3a719 | 1622 | ipcacheReleaseInvalid(r->host); |
ee1679df | 1623 | return LOG_TCP_CLIENT_REFRESH_MISS; |
5d679edb | 1624 | } else if (r->range && httpHdrRangeWillBeComplex(r->range)) { |
1625 | /* some clients break if we return "200 OK" for a Range request | |
1626 | * and we _will_ return 200 if ranges happen to bee too complex */ | |
1627 | http->entry = NULL; | |
1628 | return LOG_TCP_MISS; | |
50ddd7a4 | 1629 | } else { |
49d3fcb0 | 1630 | http->entry = e; |
50ddd7a4 | 1631 | return LOG_TCP_HIT; |
1632 | } | |
1633 | } | |
1634 | ||
4c323c5f | 1635 | static void |
fb63215a | 1636 | clientProcessRequest(clientHttpRequest * http) |
7a2f978b | 1637 | { |
23d92c64 | 1638 | char *url = http->uri; |
50ddd7a4 | 1639 | request_t *r = http->request; |
fb63215a | 1640 | int fd = http->conn->fd; |
1bea1d83 | 1641 | HttpReply *rep; |
93f9abd0 | 1642 | debug(33, 4) ("clientProcessRequest: %s '%s'\n", |
50ddd7a4 | 1643 | RequestMethodStr[r->method], |
7a2f978b | 1644 | url); |
fb63215a | 1645 | if (r->method == METHOD_CONNECT) { |
7a2f978b | 1646 | http->log_type = LOG_TCP_MISS; |
ea0efb98 | 1647 | sslStart(fd, url, r, &http->out.size); |
1648 | return; | |
fb63215a | 1649 | } else if (r->method == METHOD_PURGE) { |
ea0efb98 | 1650 | clientPurgeRequest(http); |
1651 | return; | |
fb63215a | 1652 | } else if (r->method == METHOD_TRACE) { |
50ddd7a4 | 1653 | if (r->max_forwards == 0) { |
92695e5e | 1654 | http->entry = clientCreateStoreEntry(http, r->method, null_request_flags); |
b17b22eb | 1655 | storeReleaseRequest(http->entry); |
1656 | storeBuffer(http->entry); | |
1bea1d83 | 1657 | rep = httpReplyCreate(); |
31be8b80 | 1658 | httpReplySetHeaders(rep, 1.0, HTTP_OK, NULL, "text/plain", |
2246b732 | 1659 | httpRequestPrefixLen(r), 0, squid_curtime); |
1bea1d83 | 1660 | httpReplySwapOut(rep, http->entry); |
1661 | httpReplyDestroy(rep); | |
2246b732 | 1662 | httpRequestSwapOut(r, http->entry); |
b17b22eb | 1663 | storeComplete(http->entry); |
7a2f978b | 1664 | return; |
1665 | } | |
1666 | /* yes, continue */ | |
6addbd81 | 1667 | http->log_type = LOG_TCP_MISS; |
efb9218c | 1668 | } else if (pumpMethod(r->method)) { |
fb63215a | 1669 | http->log_type = LOG_TCP_MISS; |
31be8b80 | 1670 | /* XXX oof, POST can be cached! */ |
54220df8 | 1671 | pumpInit(fd, r, http->uri); |
31be8b80 | 1672 | } else { |
efb9218c | 1673 | http->log_type = clientProcessRequest2(http); |
7a2f978b | 1674 | } |
93f9abd0 | 1675 | debug(33, 4) ("clientProcessRequest: %s for '%s'\n", |
7a2f978b | 1676 | log_tags[http->log_type], |
23d92c64 | 1677 | http->uri); |
7a2f978b | 1678 | http->out.offset = 0; |
49d3fcb0 | 1679 | if (NULL != http->entry) { |
1680 | storeLockObject(http->entry); | |
1681 | storeCreateMemObject(http->entry, http->uri, http->log_uri); | |
1682 | storeClientListAdd(http->entry, http); | |
447e176b | 1683 | #if DELAY_POOLS |
1684 | delaySetStoreClient(http->entry, http, http->request->delay_id); | |
1685 | #endif | |
49d3fcb0 | 1686 | http->entry->refcount++; |
1687 | storeClientCopy(http->entry, | |
7a2f978b | 1688 | http->out.offset, |
1689 | http->out.offset, | |
cc27d775 | 1690 | CLIENT_SOCK_SZ, |
1691 | memAllocate(MEM_CLIENT_SOCK_BUF), | |
7a2f978b | 1692 | clientCacheHit, |
1693 | http); | |
49d3fcb0 | 1694 | } else { |
1695 | /* MISS CASE */ | |
1696 | http->log_type = LOG_TCP_MISS; | |
fb63215a | 1697 | clientProcessMiss(http); |
7a2f978b | 1698 | } |
1699 | } | |
1700 | ||
1701 | /* | |
1702 | * Prepare to fetch the object as it's a cache miss of some kind. | |
1703 | */ | |
1704 | static void | |
fb63215a | 1705 | clientProcessMiss(clientHttpRequest * http) |
7a2f978b | 1706 | { |
23d92c64 | 1707 | char *url = http->uri; |
f44af445 | 1708 | request_t *r = http->request; |
7a2f978b | 1709 | ErrorState *err = NULL; |
93f9abd0 | 1710 | debug(33, 4) ("clientProcessMiss: '%s %s'\n", |
f44af445 | 1711 | RequestMethodStr[r->method], url); |
79e0dc20 | 1712 | /* |
1713 | * We might have a left-over StoreEntry from a failed cache hit | |
1714 | * or IMS request. | |
1715 | */ | |
1716 | if (http->entry) { | |
d46a87a8 | 1717 | if (EBIT_TEST(http->entry->flags, ENTRY_SPECIAL)) |
12784378 | 1718 | debug(33, 0) ("clientProcessMiss: miss on a special object (%s).\n", url); |
79e0dc20 | 1719 | storeUnregister(http->entry, http); |
1720 | storeUnlockObject(http->entry); | |
1721 | http->entry = NULL; | |
1722 | } | |
7c1d4010 | 1723 | if (clientOnlyIfCached(http)) { |
1724 | clientProcessOnlyIfCachedMiss(http); | |
1725 | return; | |
1726 | } | |
9330543e | 1727 | /* |
1728 | * Deny loops when running in accelerator/transproxy mode. | |
1729 | */ | |
92695e5e | 1730 | if (http->flags.accel && r->flags.loopdetect) { |
9330543e | 1731 | http->al.http.code = HTTP_FORBIDDEN; |
1732 | err = errorCon(ERR_ACCESS_DENIED, HTTP_FORBIDDEN); | |
1733 | err->request = requestLink(r); | |
1734 | err->src_addr = http->conn->peer.sin_addr; | |
92695e5e | 1735 | http->entry = clientCreateStoreEntry(http, r->method, null_request_flags); |
9330543e | 1736 | errorAppendEntry(http->entry, err); |
1737 | return; | |
1738 | } | |
79e0dc20 | 1739 | assert(http->out.offset == 0); |
f44af445 | 1740 | http->entry = clientCreateStoreEntry(http, r->method, r->flags); |
79e0dc20 | 1741 | http->entry->refcount++; |
1da5651f | 1742 | if (http->flags.internal) |
1743 | r->protocol = PROTO_INTERNAL; | |
d1061d2b | 1744 | fwdStart(http->conn->fd, http->entry, r, http->conn->peer.sin_addr); |
7a2f978b | 1745 | } |
1746 | ||
99edd1c3 | 1747 | static clientHttpRequest * |
1748 | parseHttpRequestAbort(ConnStateData * conn, const char *uri) | |
1749 | { | |
1750 | clientHttpRequest *http = xcalloc(1, sizeof(clientHttpRequest)); | |
1751 | cbdataAdd(http, MEM_NONE); | |
1752 | http->conn = conn; | |
1753 | http->start = current_time; | |
1754 | http->req_sz = conn->in.offset; | |
1755 | http->uri = xstrdup(uri); | |
1756 | http->log_uri = xstrdup(uri); | |
d192d11f | 1757 | http->range_iter.boundary = StringNull; |
99edd1c3 | 1758 | return http; |
1759 | } | |
1760 | ||
7a2f978b | 1761 | /* |
1762 | * parseHttpRequest() | |
1763 | * | |
1764 | * Returns | |
1765 | * NULL on error or incomplete request | |
1766 | * a clientHttpRequest structure on success | |
1767 | */ | |
1768 | static clientHttpRequest * | |
1769 | parseHttpRequest(ConnStateData * conn, method_t * method_p, int *status, | |
ea285003 | 1770 | char **prefix_p, size_t * req_line_sz_p) |
7a2f978b | 1771 | { |
1772 | char *inbuf = NULL; | |
1773 | char *mstr = NULL; | |
1774 | char *url = NULL; | |
1775 | char *req_hdr = NULL; | |
7a2f978b | 1776 | float http_ver; |
1777 | char *token = NULL; | |
1778 | char *t = NULL; | |
2334c194 | 1779 | char *end; |
7a2f978b | 1780 | int free_request = 0; |
1781 | size_t header_sz; /* size of headers, not including first line */ | |
ea285003 | 1782 | size_t prefix_sz; /* size of whole request (req-line + headers) */ |
7a2f978b | 1783 | size_t url_sz; |
1784 | method_t method; | |
1785 | clientHttpRequest *http = NULL; | |
5cafc1d6 | 1786 | #if IPF_TRANSPARENT |
1787 | struct natlookup natLookup; | |
1788 | static int natfd = -1; | |
1789 | #endif | |
7a2f978b | 1790 | |
1791 | /* Make sure a complete line has been received */ | |
99edd1c3 | 1792 | if ((t = strchr(conn->in.buf, '\n')) == NULL) { |
93f9abd0 | 1793 | debug(33, 5) ("Incomplete request line, waiting for more data\n"); |
7a2f978b | 1794 | *status = 0; |
08e70b8f | 1795 | *prefix_p = NULL; |
1796 | *method_p = METHOD_NONE; | |
7a2f978b | 1797 | return NULL; |
1798 | } | |
99edd1c3 | 1799 | *req_line_sz_p = t - conn->in.buf; |
7a2f978b | 1800 | /* Use xmalloc/xmemcpy instead of xstrdup because inbuf might |
1801 | * contain NULL bytes; especially for POST data */ | |
1802 | inbuf = xmalloc(conn->in.offset + 1); | |
1803 | xmemcpy(inbuf, conn->in.buf, conn->in.offset); | |
1804 | *(inbuf + conn->in.offset) = '\0'; | |
1805 | ||
99edd1c3 | 1806 | /* pre-set these values to make aborting simpler */ |
1807 | *prefix_p = inbuf; | |
1808 | *method_p = METHOD_NONE; | |
1809 | *status = -1; | |
1810 | ||
7a2f978b | 1811 | /* Look for request method */ |
1812 | if ((mstr = strtok(inbuf, "\t ")) == NULL) { | |
93f9abd0 | 1813 | debug(33, 1) ("parseHttpRequest: Can't get request method\n"); |
99edd1c3 | 1814 | return parseHttpRequestAbort(conn, "error:invalid-request-method"); |
7a2f978b | 1815 | } |
1816 | method = urlParseMethod(mstr); | |
1817 | if (method == METHOD_NONE) { | |
93f9abd0 | 1818 | debug(33, 1) ("parseHttpRequest: Unsupported method '%s'\n", mstr); |
99edd1c3 | 1819 | return parseHttpRequestAbort(conn, "error:unsupported-request-method"); |
7a2f978b | 1820 | } |
93f9abd0 | 1821 | debug(33, 5) ("parseHttpRequest: Method is '%s'\n", mstr); |
3775d53c | 1822 | *method_p = method; |
7a2f978b | 1823 | |
1824 | /* look for URL */ | |
1825 | if ((url = strtok(NULL, "\r\n\t ")) == NULL) { | |
93f9abd0 | 1826 | debug(33, 1) ("parseHttpRequest: Missing URL\n"); |
99edd1c3 | 1827 | return parseHttpRequestAbort(conn, "error:missing-url"); |
7a2f978b | 1828 | } |
93f9abd0 | 1829 | debug(33, 5) ("parseHttpRequest: Request is '%s'\n", url); |
7a2f978b | 1830 | |
1831 | token = strtok(NULL, null_string); | |
1832 | for (t = token; t && *t && *t != '\n' && *t != '\r'; t++); | |
97ce5179 | 1833 | if (t == NULL || *t == '\0' || t == token || strncasecmp(token, "HTTP/", 5)) { |
93f9abd0 | 1834 | debug(33, 3) ("parseHttpRequest: Missing HTTP identifier\n"); |
46052490 | 1835 | #if RELAXED_HTTP_PARSER |
1836 | http_ver = (float) 0.9; /* wild guess */ | |
1837 | #else | |
99edd1c3 | 1838 | return parseHttpRequestAbort(conn, "error:missing-http-ident"); |
7518fce5 | 1839 | #endif |
99edd1c3 | 1840 | } else { |
7518fce5 | 1841 | http_ver = (float) atof(token + 5); |
99edd1c3 | 1842 | } |
7a2f978b | 1843 | |
1844 | /* Check if headers are received */ | |
754b9ce9 | 1845 | req_hdr = t; |
8d9810cd | 1846 | header_sz = headersEnd(req_hdr, conn->in.offset - (req_hdr - inbuf)); |
2334c194 | 1847 | if (0 == header_sz) { |
1a92a1e2 | 1848 | debug(33, 3) ("parseHttpRequest: header_sz == 0\n"); |
7a2f978b | 1849 | *status = 0; |
1850 | return NULL; | |
1851 | } | |
754b9ce9 | 1852 | /* |
99edd1c3 | 1853 | * Skip whitespace at the end of the first line, up to the |
754b9ce9 | 1854 | * first newline. |
1855 | */ | |
1856 | while (isspace(*req_hdr)) { | |
1857 | header_sz--; | |
1858 | if (*(req_hdr++) == '\n') | |
1859 | break; | |
1860 | } | |
1861 | assert(header_sz > 0); | |
1862 | debug(33, 3) ("parseHttpRequest: req_hdr = {%s}\n", req_hdr); | |
2334c194 | 1863 | end = req_hdr + header_sz; |
04990e2d | 1864 | debug(33, 3) ("parseHttpRequest: end = {%s}\n", end); |
99edd1c3 | 1865 | |
99edd1c3 | 1866 | prefix_sz = end - inbuf; |
1867 | *req_line_sz_p = req_hdr - inbuf; | |
ea285003 | 1868 | debug(33, 3) ("parseHttpRequest: prefix_sz = %d, req_line_sz = %d\n", |
99edd1c3 | 1869 | (int) prefix_sz, (int) *req_line_sz_p); |
1870 | assert(prefix_sz <= conn->in.offset); | |
7a2f978b | 1871 | |
1872 | /* Ok, all headers are received */ | |
1873 | http = xcalloc(1, sizeof(clientHttpRequest)); | |
3f6c0fb2 | 1874 | cbdataAdd(http, MEM_NONE); |
7a2f978b | 1875 | http->http_ver = http_ver; |
1876 | http->conn = conn; | |
1877 | http->start = current_time; | |
99edd1c3 | 1878 | http->req_sz = prefix_sz; |
d192d11f | 1879 | http->range_iter.boundary = StringNull; |
99edd1c3 | 1880 | *prefix_p = xmalloc(prefix_sz + 1); |
1881 | xmemcpy(*prefix_p, conn->in.buf, prefix_sz); | |
1882 | *(*prefix_p + prefix_sz) = '\0'; | |
7a2f978b | 1883 | |
ea285003 | 1884 | debug(33, 5) ("parseHttpRequest: Request Header is\n%s\n", (*prefix_p) + *req_line_sz_p); |
23d92c64 | 1885 | /* Assign http->uri */ |
7a2f978b | 1886 | if ((t = strchr(url, '\n'))) /* remove NL */ |
1887 | *t = '\0'; | |
1888 | if ((t = strchr(url, '\r'))) /* remove CR */ | |
1889 | *t = '\0'; | |
1890 | if ((t = strchr(url, '#'))) /* remove HTML anchors */ | |
1891 | *t = '\0'; | |
1892 | ||
4162ee3b | 1893 | /* handle internal objects */ |
1da5651f | 1894 | if (internalCheck(url)) { |
4162ee3b | 1895 | /* prepend our name & port */ |
1da5651f | 1896 | http->uri = xstrdup(internalLocalUri(NULL, url)); |
77ed547a | 1897 | http->flags.internal = 1; |
4162ee3b | 1898 | } |
7a2f978b | 1899 | /* see if we running in Config2.Accel.on, if so got to convert it to URL */ |
4162ee3b | 1900 | else if (Config2.Accel.on && *url == '/') { |
7a2f978b | 1901 | /* prepend the accel prefix */ |
dbfed404 | 1902 | if (opt_accel_uses_host && (t = mime_get_header(req_hdr, "Host"))) { |
7a2f978b | 1903 | /* If a Host: header was specified, use it to build the URL |
1904 | * instead of the one in the Config file. */ | |
1905 | /* | |
1906 | * XXX Use of the Host: header here opens a potential | |
1907 | * security hole. There are no checks that the Host: value | |
1908 | * corresponds to one of your servers. It might, for example, | |
1909 | * refer to www.playboy.com. The 'dst' and/or 'dst_domain' ACL | |
1910 | * types should be used to prevent httpd-accelerators | |
1911 | * handling requests for non-local servers */ | |
1912 | strtok(t, " :/;@"); | |
12fc602c | 1913 | url_sz = strlen(url) + 32 + Config.appendDomainLen + |
1914 | strlen(t); | |
23d92c64 | 1915 | http->uri = xcalloc(url_sz, 1); |
1916 | snprintf(http->uri, url_sz, "http://%s:%d%s", | |
7a2f978b | 1917 | t, (int) Config.Accel.port, url); |
dbfed404 | 1918 | } else if (vhost_mode) { |
1919 | /* Put the local socket IP address as the hostname */ | |
1920 | url_sz = strlen(url) + 32 + Config.appendDomainLen; | |
1921 | http->uri = xcalloc(url_sz, 1); | |
5cafc1d6 | 1922 | #if IPF_TRANSPARENT |
1923 | natLookup.nl_inport = http->conn->me.sin_port; | |
1924 | natLookup.nl_outport = http->conn->peer.sin_port; | |
1925 | natLookup.nl_inip = http->conn->me.sin_addr; | |
1926 | natLookup.nl_outip = http->conn->peer.sin_addr; | |
1927 | natLookup.nl_flags = IPN_TCP; | |
1928 | if (natfd < 0) | |
1929 | natfd = open(IPL_NAT, O_RDONLY,0 ); | |
1930 | if (natfd < 0) { | |
1931 | debug(50,1)("parseHttpRequest: NAT open failed: %s\n", | |
1932 | xstrerror()); | |
1933 | return NULL; | |
1934 | } | |
1935 | if (ioctl(natfd, SIOCGNATL, &natLookup) < 0) { | |
1936 | debug(50,1)("parseHttpRequest: NAT lookup failed: %s\n", | |
1937 | xstrerror()); | |
1938 | close(natfd); | |
1939 | natfd = -1; | |
1940 | return NULL; | |
1941 | } | |
1942 | snprintf(http->uri, url_sz, "http://%s:%d%s", | |
1943 | inet_ntoa(natLookup.nl_realip), | |
1944 | (int)Config.Accel.port, | |
1945 | url); | |
1946 | #else | |
dbfed404 | 1947 | snprintf(http->uri, url_sz, "http://%s:%d%s", |
1948 | inet_ntoa(http->conn->me.sin_addr), | |
1949 | (int) Config.Accel.port, | |
1950 | url); | |
5cafc1d6 | 1951 | #endif |
93f9abd0 | 1952 | debug(33, 5) ("VHOST REWRITE: '%s'\n", http->uri); |
7a2f978b | 1953 | } else { |
1954 | url_sz = strlen(Config2.Accel.prefix) + strlen(url) + | |
1955 | Config.appendDomainLen + 1; | |
23d92c64 | 1956 | http->uri = xcalloc(url_sz, 1); |
1957 | snprintf(http->uri, url_sz, "%s%s", Config2.Accel.prefix, url); | |
7a2f978b | 1958 | } |
77ed547a | 1959 | http->flags.accel = 1; |
7a2f978b | 1960 | } else { |
1961 | /* URL may be rewritten later, so make extra room */ | |
1962 | url_sz = strlen(url) + Config.appendDomainLen + 5; | |
23d92c64 | 1963 | http->uri = xcalloc(url_sz, 1); |
1964 | strcpy(http->uri, url); | |
77ed547a | 1965 | http->flags.accel = 0; |
7a2f978b | 1966 | } |
23d92c64 | 1967 | http->log_uri = xstrdup(http->uri); |
93f9abd0 | 1968 | debug(33, 5) ("parseHttpRequest: Complete request received\n"); |
7a2f978b | 1969 | if (free_request) |
1970 | safe_free(url); | |
1971 | xfree(inbuf); | |
7a2f978b | 1972 | *status = 1; |
1973 | return http; | |
1974 | } | |
1975 | ||
1976 | static int | |
79d39a72 | 1977 | clientReadDefer(int fdnotused, void *data) |
7a2f978b | 1978 | { |
1979 | ConnStateData *conn = data; | |
1980 | return conn->defer.until > squid_curtime; | |
1981 | } | |
1982 | ||
1983 | static void | |
1984 | clientReadRequest(int fd, void *data) | |
1985 | { | |
1986 | ConnStateData *conn = data; | |
1987 | int parser_return_code = 0; | |
1988 | int k; | |
1989 | request_t *request = NULL; | |
7a2f978b | 1990 | int size; |
7a2f978b | 1991 | method_t method; |
1992 | clientHttpRequest *http = NULL; | |
1993 | clientHttpRequest **H = NULL; | |
08e70b8f | 1994 | char *prefix = NULL; |
7a2f978b | 1995 | ErrorState *err = NULL; |
1996 | fde *F = &fd_table[fd]; | |
44db45e8 | 1997 | int len = conn->in.size - conn->in.offset - 1; |
93f9abd0 | 1998 | debug(33, 4) ("clientReadRequest: FD %d: reading request...\n", fd); |
886f2785 | 1999 | Counter.syscalls.sock.reads++; |
7a2f978b | 2000 | size = read(fd, conn->in.buf + conn->in.offset, len); |
d8b83480 | 2001 | if (size > 0) { |
ea285003 | 2002 | fd_bytes(fd, size, FD_READ); |
2003 | kb_incr(&Counter.client_http.kbytes_in, size); | |
d8b83480 | 2004 | } |
44db45e8 | 2005 | /* |
2006 | * Don't reset the timeout value here. The timeout value will be | |
2007 | * set to Config.Timeout.request by httpAccept() and | |
2008 | * clientWriteComplete(), and should apply to the request as a | |
2009 | * whole, not individual read() calls. Plus, it breaks our | |
2010 | * lame half-close detection | |
2011 | */ | |
2012 | commSetSelect(fd, COMM_SELECT_READ, clientReadRequest, conn, 0); | |
7a2f978b | 2013 | if (size == 0) { |
2014 | if (conn->chr == NULL) { | |
2015 | /* no current or pending requests */ | |
2016 | comm_close(fd); | |
2017 | return; | |
ea285003 | 2018 | } else if (!Config.onoff.half_closed_clients) { |
2019 | /* admin doesn't want to support half-closed client sockets */ | |
2020 | comm_close(fd); | |
2021 | return; | |
7a2f978b | 2022 | } |
2023 | /* It might be half-closed, we can't tell */ | |
93f9abd0 | 2024 | debug(33, 5) ("clientReadRequest: FD %d closed?\n", fd); |
58a6c186 | 2025 | F->flags.socket_eof = 1; |
7a2f978b | 2026 | conn->defer.until = squid_curtime + 1; |
2027 | conn->defer.n++; | |
44db45e8 | 2028 | fd_note(fd, "half-closed"); |
7a2f978b | 2029 | return; |
2030 | } else if (size < 0) { | |
6d3caf23 | 2031 | if (!ignoreErrno(errno)) { |
7a2f978b | 2032 | debug(50, 2) ("clientReadRequest: FD %d: %s\n", fd, xstrerror()); |
2033 | comm_close(fd); | |
ebf4efff | 2034 | return; |
47130615 | 2035 | } else if (conn->in.offset == 0) { |
7c1d4010 | 2036 | debug(50, 2) ("clientReadRequest: FD %d: no data to process (%s)\n", fd, xstrerror()); |
ebf4efff | 2037 | return; |
7a2f978b | 2038 | } |
ebf4efff | 2039 | /* Continue to process previously read data */ |
47130615 | 2040 | size = 0; |
7a2f978b | 2041 | } |
2042 | conn->in.offset += size; | |
5ede6c8f | 2043 | /* Skip leading (and trailing) whitespace */ |
7a2f978b | 2044 | while (conn->in.offset > 0) { |
ebf4efff | 2045 | int nrequests; |
cff0c749 | 2046 | size_t req_line_sz; |
9a6f98a5 | 2047 | while (conn->in.offset > 0 && isspace(conn->in.buf[0])) { |
2048 | xmemmove(conn->in.buf, conn->in.buf + 1, conn->in.offset - 1); | |
2049 | conn->in.offset--; | |
2050 | } | |
2051 | conn->in.buf[conn->in.offset] = '\0'; /* Terminate the string */ | |
2052 | if (conn->in.offset == 0) | |
2053 | break; | |
ebf4efff | 2054 | /* Limit the number of concurrent requests to 2 */ |
2055 | for (H = &conn->chr, nrequests = 0; *H; H = &(*H)->next, nrequests++); | |
2056 | if (nrequests >= 2) { | |
93f9abd0 | 2057 | debug(33, 2) ("clientReadRequest: FD %d max concurrent requests reached\n", fd); |
2058 | debug(33, 5) ("clientReadRequest: FD %d defering new request until one is done\n", fd); | |
47130615 | 2059 | conn->defer.until = squid_curtime + 100; /* Reset when a request is complete */ |
ebf4efff | 2060 | break; |
2061 | } | |
2062 | /* Process request */ | |
7a2f978b | 2063 | http = parseHttpRequest(conn, |
2064 | &method, | |
2065 | &parser_return_code, | |
99edd1c3 | 2066 | &prefix, |
2067 | &req_line_sz); | |
13f11a4a | 2068 | if (!http) |
2069 | safe_free(prefix); | |
7a2f978b | 2070 | if (http) { |
2071 | assert(http->req_sz > 0); | |
2072 | conn->in.offset -= http->req_sz; | |
2073 | assert(conn->in.offset >= 0); | |
ebb6e9a0 | 2074 | debug(33, 5) ("conn->in.offset = %d\n", (int) conn->in.offset); |
6fa92aa2 | 2075 | /* |
2076 | * If we read past the end of this request, move the remaining | |
2077 | * data to the beginning | |
2078 | */ | |
2079 | if (conn->in.offset > 0) | |
dbfed404 | 2080 | xmemmove(conn->in.buf, conn->in.buf + http->req_sz, conn->in.offset); |
ebf4efff | 2081 | /* add to the client request queue */ |
7a2f978b | 2082 | for (H = &conn->chr; *H; H = &(*H)->next); |
2083 | *H = http; | |
2084 | conn->nrequests++; | |
2085 | commSetTimeout(fd, Config.Timeout.lifetime, NULL, NULL); | |
3775d53c | 2086 | if (parser_return_code < 0) { |
93f9abd0 | 2087 | debug(33, 1) ("clientReadRequest: FD %d Invalid Request\n", fd); |
3775d53c | 2088 | err = errorCon(ERR_INVALID_REQ, HTTP_BAD_REQUEST); |
2089 | err->request_hdrs = xstrdup(conn->in.buf); | |
92695e5e | 2090 | http->entry = clientCreateStoreEntry(http, method, null_request_flags); |
3775d53c | 2091 | errorAppendEntry(http->entry, err); |
13f11a4a | 2092 | safe_free(prefix); |
3775d53c | 2093 | break; |
2094 | } | |
23d92c64 | 2095 | if ((request = urlParse(method, http->uri)) == NULL) { |
93f9abd0 | 2096 | debug(33, 5) ("Invalid URL: %s\n", http->uri); |
7a2f978b | 2097 | err = errorCon(ERR_INVALID_URL, HTTP_BAD_REQUEST); |
2098 | err->src_addr = conn->peer.sin_addr; | |
23d92c64 | 2099 | err->url = xstrdup(http->uri); |
7a2f978b | 2100 | http->al.http.code = err->http_status; |
92695e5e | 2101 | http->entry = clientCreateStoreEntry(http, method, null_request_flags); |
79e0dc20 | 2102 | errorAppendEntry(http->entry, err); |
99edd1c3 | 2103 | safe_free(prefix); |
7a2f978b | 2104 | break; |
99edd1c3 | 2105 | } else { |
2106 | /* compile headers */ | |
2107 | /* we should skip request line! */ | |
ea285003 | 2108 | if (!httpRequestParseHeader(request, prefix + req_line_sz)) |
99edd1c3 | 2109 | debug(33, 1) ("Failed to parse request headers: %s\n%s\n", |
2110 | http->uri, prefix); | |
2111 | /* continue anyway? */ | |
7a2f978b | 2112 | } |
ba26bca4 | 2113 | if (!http->flags.internal) { |
2114 | if (internalCheck(strBuf(request->urlpath))) { | |
2115 | if (0 == strcasecmp(request->host, getMyHostname())) { | |
4b4cd312 | 2116 | if (request->port == Config.Port.http->i) |
2117 | http->flags.internal = 1; | |
ba26bca4 | 2118 | } else if (internalStaticCheck(strBuf(request->urlpath))) { |
5999b776 | 2119 | xstrncpy(request->host, getMyHostname(), SQUIDHOSTNAMELEN); |
2120 | request->port = Config.Port.http->i; | |
2121 | http->flags.internal = 1; | |
ba26bca4 | 2122 | } |
2123 | } | |
2124 | } | |
13f11a4a | 2125 | safe_free(prefix); |
23d92c64 | 2126 | safe_free(http->log_uri); |
2127 | http->log_uri = xstrdup(urlCanonicalClean(request)); | |
7a2f978b | 2128 | request->client_addr = conn->peer.sin_addr; |
2129 | request->http_ver = http->http_ver; | |
7a2f978b | 2130 | if (!urlCheckRequest(request)) { |
2131 | err = errorCon(ERR_UNSUP_REQ, HTTP_NOT_IMPLEMENTED); | |
2132 | err->src_addr = conn->peer.sin_addr; | |
7a2f978b | 2133 | err->request = requestLink(request); |
2134 | http->al.http.code = err->http_status; | |
92695e5e | 2135 | http->entry = clientCreateStoreEntry(http, request->method, null_request_flags); |
79e0dc20 | 2136 | errorAppendEntry(http->entry, err); |
3775d53c | 2137 | break; |
7a2f978b | 2138 | } |
31be8b80 | 2139 | if (0 == clientCheckContentLength(request)) { |
2140 | err = errorCon(ERR_INVALID_REQ, HTTP_LENGTH_REQUIRED); | |
2141 | err->src_addr = conn->peer.sin_addr; | |
2142 | err->request = requestLink(request); | |
2143 | http->al.http.code = err->http_status; | |
92695e5e | 2144 | http->entry = clientCreateStoreEntry(http, request->method, null_request_flags); |
31be8b80 | 2145 | errorAppendEntry(http->entry, err); |
2146 | break; | |
2147 | } | |
7a2f978b | 2148 | http->request = requestLink(request); |
3775d53c | 2149 | /* |
2150 | * break here for NON-GET because most likely there is a | |
7a2f978b | 2151 | * reqeust body following and we don't want to parse it |
3775d53c | 2152 | * as though it was new request |
2153 | */ | |
7a2f978b | 2154 | if (request->method != METHOD_GET) { |
ebb6e9a0 | 2155 | int cont_len = httpHeaderGetInt(&request->header, HDR_CONTENT_LENGTH); |
2156 | int copy_len = XMIN(cont_len, conn->in.offset); | |
e34195c0 | 2157 | if (copy_len > 0) { |
ebb6e9a0 | 2158 | assert(conn->in.offset >= copy_len); |
2159 | request->body_sz = copy_len; | |
7a2f978b | 2160 | request->body = xmalloc(request->body_sz); |
2161 | xmemcpy(request->body, conn->in.buf, request->body_sz); | |
ebb6e9a0 | 2162 | conn->in.offset -= copy_len; |
2163 | if (conn->in.offset) | |
2164 | xmemmove(conn->in.buf, conn->in.buf + copy_len, conn->in.offset); | |
7a2f978b | 2165 | } |
f7237ed2 | 2166 | /* |
2aecf121 | 2167 | * if we didn't get the full body now, then more will |
2168 | * be arriving on the client socket. Lets cancel | |
2169 | * the read handler until this request gets forwarded. | |
f7237ed2 | 2170 | */ |
2aecf121 | 2171 | if (request->body_sz < cont_len) |
2172 | commSetSelect(fd, COMM_SELECT_READ, NULL, NULL, 0); | |
7a2f978b | 2173 | } |
2aecf121 | 2174 | clientAccessCheck(http); |
7a2f978b | 2175 | continue; /* while offset > 0 */ |
2176 | } else if (parser_return_code == 0) { | |
2177 | /* | |
2178 | * Partial request received; reschedule until parseHttpRequest() | |
2179 | * is happy with the input | |
2180 | */ | |
2181 | k = conn->in.size - 1 - conn->in.offset; | |
2182 | if (k == 0) { | |
2183 | if (conn->in.offset >= Config.maxRequestSize) { | |
2184 | /* The request is too large to handle */ | |
93f9abd0 | 2185 | debug(33, 0) ("Request won't fit in buffer.\n"); |
2186 | debug(33, 0) ("Config 'request_size'= %d bytes.\n", | |
7a2f978b | 2187 | Config.maxRequestSize); |
93f9abd0 | 2188 | debug(33, 0) ("This request = %d bytes.\n", |
5f6ac48b | 2189 | (int) conn->in.offset); |
7a2f978b | 2190 | err = errorCon(ERR_INVALID_REQ, HTTP_REQUEST_ENTITY_TOO_LARGE); |
92695e5e | 2191 | http->entry = clientCreateStoreEntry(http, request->method, null_request_flags); |
79e0dc20 | 2192 | errorAppendEntry(http->entry, err); |
7a2f978b | 2193 | return; |
2194 | } | |
2195 | /* Grow the request memory area to accomodate for a large request */ | |
2196 | conn->in.size += REQUEST_BUF_SIZE; | |
2197 | conn->in.buf = xrealloc(conn->in.buf, conn->in.size); | |
59c4d35b | 2198 | /* XXX account conn->in.buf */ |
93f9abd0 | 2199 | debug(33, 2) ("Handling a large request, offset=%d inbufsize=%d\n", |
5f6ac48b | 2200 | (int) conn->in.offset, conn->in.size); |
7a2f978b | 2201 | k = conn->in.size - 1 - conn->in.offset; |
2202 | } | |
7a2f978b | 2203 | break; |
7a2f978b | 2204 | } |
2205 | } | |
2206 | } | |
2207 | ||
2208 | /* general lifetime handler for HTTP requests */ | |
2209 | static void | |
2210 | requestTimeout(int fd, void *data) | |
2211 | { | |
2212 | ConnStateData *conn = data; | |
2213 | ErrorState *err; | |
93f9abd0 | 2214 | debug(33, 2) ("requestTimeout: FD %d: lifetime is expired.\n", fd); |
7a2f978b | 2215 | if (fd_table[fd].rwstate) { |
79e0dc20 | 2216 | /* |
2217 | * Some data has been sent to the client, just close the FD | |
2218 | */ | |
7a2f978b | 2219 | comm_close(fd); |
2220 | } else if (conn->nrequests) { | |
79e0dc20 | 2221 | /* |
2222 | * assume its a persistent connection; just close it | |
2223 | */ | |
7a2f978b | 2224 | comm_close(fd); |
2225 | } else { | |
79e0dc20 | 2226 | /* |
2227 | * Generate an error | |
2228 | */ | |
7a2f978b | 2229 | err = errorCon(ERR_LIFETIME_EXP, HTTP_REQUEST_TIMEOUT); |
7a2f978b | 2230 | err->url = xstrdup("N/A"); |
79e0dc20 | 2231 | /* |
2232 | * Normally we shouldn't call errorSend() in client_side.c, but | |
2233 | * it should be okay in this case. Presumably if we get here | |
2234 | * this is the first request for the connection, and no data | |
2235 | * has been written yet | |
2236 | */ | |
2237 | assert(conn->chr == NULL); | |
7a2f978b | 2238 | errorSend(fd, err); |
79e0dc20 | 2239 | /* |
2240 | * if we don't close() here, we still need a timeout handler! | |
2241 | */ | |
7a2f978b | 2242 | commSetTimeout(fd, 30, requestTimeout, conn); |
2243 | } | |
2244 | } | |
2245 | ||
ba4f8e5a | 2246 | static int |
2247 | httpAcceptDefer(void) | |
7a2f978b | 2248 | { |
3d6629c6 | 2249 | static time_t last_warn = 0; |
2250 | if (fdNFree() >= RESERVED_FD) | |
2251 | return 0; | |
2252 | if (last_warn + 15 < squid_curtime) { | |
2253 | debug(33, 0) ("WARNING! Your cache is running out of filedescriptors\n"); | |
2254 | last_warn = squid_curtime; | |
2255 | } | |
2256 | return 1; | |
7a2f978b | 2257 | } |
2258 | ||
bf8e5903 | 2259 | /* Handle a new connection on HTTP socket. */ |
7a2f978b | 2260 | void |
ba4f8e5a | 2261 | httpAccept(int sock, void *data) |
7a2f978b | 2262 | { |
ba4f8e5a | 2263 | int *N = data; |
7a2f978b | 2264 | int fd = -1; |
2265 | ConnStateData *connState = NULL; | |
2266 | struct sockaddr_in peer; | |
2267 | struct sockaddr_in me; | |
309ad3b6 | 2268 | int max = INCOMING_HTTP_MAX; |
c411b98a | 2269 | commSetSelect(sock, COMM_SELECT_READ, httpAccept, NULL, 0); |
ba4f8e5a | 2270 | while (max-- && !httpAcceptDefer()) { |
e2525655 | 2271 | memset(&peer, '\0', sizeof(struct sockaddr_in)); |
2272 | memset(&me, '\0', sizeof(struct sockaddr_in)); | |
e2525655 | 2273 | if ((fd = comm_accept(sock, &peer, &me)) < 0) { |
2274 | if (!ignoreErrno(errno)) | |
eeb423fb | 2275 | debug(50, 1) ("httpAccept: FD %d: accept failure: %s\n", |
e2525655 | 2276 | sock, xstrerror()); |
2277 | break; | |
2278 | } | |
2279 | debug(33, 4) ("httpAccept: FD %d: accepted\n", fd); | |
2280 | connState = xcalloc(1, sizeof(ConnStateData)); | |
2281 | connState->peer = peer; | |
2282 | connState->log_addr = peer.sin_addr; | |
2283 | connState->log_addr.s_addr &= Config.Addrs.client_netmask.s_addr; | |
2284 | connState->me = me; | |
2285 | connState->fd = fd; | |
2286 | connState->ident.fd = -1; | |
2287 | connState->in.size = REQUEST_BUF_SIZE; | |
2288 | connState->in.buf = xcalloc(connState->in.size, 1); | |
2289 | cbdataAdd(connState, MEM_NONE); | |
2290 | /* XXX account connState->in.buf */ | |
2291 | comm_add_close_handler(fd, connStateFree, connState); | |
2292 | if (Config.onoff.log_fqdn) | |
2293 | fqdncache_gethostbyaddr(peer.sin_addr, FQDN_LOOKUP_IF_MISS); | |
2294 | commSetTimeout(fd, Config.Timeout.request, requestTimeout, connState); | |
2295 | commSetSelect(fd, COMM_SELECT_READ, clientReadRequest, connState, 0); | |
2296 | commSetDefer(fd, clientReadDefer, connState); | |
ba4f8e5a | 2297 | (*N)++; |
7a2f978b | 2298 | } |
7a2f978b | 2299 | } |
2300 | ||
7a2f978b | 2301 | /* return 1 if the request should be aborted */ |
2302 | static int | |
2303 | CheckQuickAbort2(const clientHttpRequest * http) | |
2304 | { | |
4efca7da | 2305 | int curlen; |
2306 | int minlen; | |
2307 | int expectlen; | |
7a2f978b | 2308 | |
92695e5e | 2309 | if (!http->request->flags.cachable) |
7a2f978b | 2310 | return 1; |
d46a87a8 | 2311 | if (EBIT_TEST(http->entry->flags, KEY_PRIVATE)) |
7a2f978b | 2312 | return 1; |
2313 | if (http->entry->mem_obj == NULL) | |
2314 | return 1; | |
038eb4ed | 2315 | expectlen = http->entry->mem_obj->reply->content_length; |
4efca7da | 2316 | curlen = (int) http->entry->mem_obj->inmem_hi; |
59cb9808 | 2317 | minlen = (int) Config.quickAbort.min << 10; |
7a2f978b | 2318 | if (minlen < 0) |
2319 | /* disabled */ | |
2320 | return 0; | |
2321 | if (curlen > expectlen) | |
2322 | /* bad content length */ | |
2323 | return 1; | |
2324 | if ((expectlen - curlen) < minlen) | |
2325 | /* only little more left */ | |
2326 | return 0; | |
59cb9808 | 2327 | if ((expectlen - curlen) > (Config.quickAbort.max << 10)) |
7a2f978b | 2328 | /* too much left to go */ |
2329 | return 1; | |
37d0359b | 2330 | if (expectlen < 100) |
4efca7da | 2331 | /* avoid FPE */ |
2332 | return 0; | |
37d0359b | 2333 | if ((curlen / (expectlen / 100)) > Config.quickAbort.pct) |
7a2f978b | 2334 | /* past point of no return */ |
2335 | return 0; | |
2336 | return 1; | |
2337 | } | |
2338 | ||
2339 | ||
2340 | static void | |
2341 | CheckQuickAbort(clientHttpRequest * http) | |
2342 | { | |
2343 | StoreEntry *entry = http->entry; | |
2344 | /* Note, set entry here because http->entry might get changed (for IMS | |
2345 | * requests) during the storeAbort() call */ | |
2346 | if (entry == NULL) | |
2347 | return; | |
36547bcf | 2348 | if (storePendingNClients(entry) > 0) |
7a2f978b | 2349 | return; |
2350 | if (entry->store_status != STORE_PENDING) | |
2351 | return; | |
2352 | if (CheckQuickAbort2(http) == 0) | |
2353 | return; | |
93f9abd0 | 2354 | debug(33, 3) ("CheckQuickAbort: ABORTING %s\n", storeUrl(entry)); |
59cb9808 | 2355 | Counter.aborted_requests++; |
7a2f978b | 2356 | storeAbort(entry, 1); |
2357 | } | |
2358 | ||
978e455f | 2359 | #define SENDING_BODY 0 |
2360 | #define SENDING_HDRSONLY 1 | |
7a2f978b | 2361 | static int |
1b02b5be | 2362 | clientCheckTransferDone(clientHttpRequest * http) |
7a2f978b | 2363 | { |
978e455f | 2364 | int sending = SENDING_BODY; |
7a2f978b | 2365 | StoreEntry *entry = http->entry; |
978e455f | 2366 | MemObject *mem; |
2367 | http_reply *reply; | |
2368 | int sendlen; | |
7a2f978b | 2369 | if (entry == NULL) |
2370 | return 0; | |
9f086470 | 2371 | /* |
2372 | * For now, 'done_copying' is used for special cases like | |
2373 | * Range and HEAD requests. | |
2374 | */ | |
2375 | if (http->flags.done_copying) | |
2376 | return 1; | |
978e455f | 2377 | /* |
2378 | * Handle STORE_OK and STORE_ABORTED objects. | |
07304bf9 | 2379 | * objectLen(entry) will be set proprely. |
978e455f | 2380 | */ |
2381 | if (entry->store_status != STORE_PENDING) { | |
07304bf9 | 2382 | if (http->out.offset >= objectLen(entry)) |
7a2f978b | 2383 | return 1; |
513f05a6 | 2384 | else |
2385 | return 0; | |
2386 | } | |
978e455f | 2387 | /* |
2388 | * Now, handle STORE_PENDING objects | |
2389 | */ | |
2390 | mem = entry->mem_obj; | |
2391 | assert(mem != NULL); | |
2392 | assert(http->request != NULL); | |
2393 | reply = mem->reply; | |
2394 | if (reply->hdr_sz == 0) | |
b34ed725 | 2395 | return 0; /* haven't found end of headers yet */ |
cb69b4c7 | 2396 | else if (reply->sline.status == HTTP_OK) |
b34ed725 | 2397 | sending = SENDING_BODY; |
cb69b4c7 | 2398 | else if (reply->sline.status == HTTP_NO_CONTENT) |
b34ed725 | 2399 | sending = SENDING_HDRSONLY; |
cb69b4c7 | 2400 | else if (reply->sline.status == HTTP_NOT_MODIFIED) |
b34ed725 | 2401 | sending = SENDING_HDRSONLY; |
cb69b4c7 | 2402 | else if (reply->sline.status < HTTP_OK) |
a3c60429 | 2403 | sending = SENDING_HDRSONLY; |
978e455f | 2404 | else if (http->request->method == METHOD_HEAD) |
b34ed725 | 2405 | sending = SENDING_HDRSONLY; |
978e455f | 2406 | else |
2407 | sending = SENDING_BODY; | |
2408 | /* | |
2409 | * Figure out how much data we are supposed to send. | |
2410 | * If we are sending a body and we don't have a content-length, | |
2411 | * then we must wait for the object to become STORE_OK or | |
2412 | * STORE_ABORTED. | |
2413 | */ | |
2414 | if (sending == SENDING_HDRSONLY) | |
2415 | sendlen = reply->hdr_sz; | |
038eb4ed | 2416 | else if (reply->content_length < 0) |
978e455f | 2417 | return 0; |
2418 | else | |
038eb4ed | 2419 | sendlen = reply->content_length + reply->hdr_sz; |
978e455f | 2420 | /* |
2421 | * Now that we have the expected length, did we send it all? | |
2422 | */ | |
2423 | if (http->out.offset < sendlen) | |
2424 | return 0; | |
2425 | else | |
b34ed725 | 2426 | return 1; |
7a2f978b | 2427 | } |
2428 | ||
7a2f978b | 2429 | /* |
2430 | * This function is designed to serve a fairly specific purpose. | |
2431 | * Occasionally our vBNS-connected caches can talk to each other, but not | |
2432 | * the rest of the world. Here we try to detect frequent failures which | |
2433 | * make the cache unusable (e.g. DNS lookup and connect() failures). If | |
2434 | * the failure:success ratio goes above 1.0 then we go into "hit only" | |
2435 | * mode where we only return UDP_HIT or UDP_MISS_NOFETCH. Neighbors | |
2436 | * will only fetch HITs from us if they are using the ICP protocol. We | |
2437 | * stay in this mode for 5 minutes. | |
2438 | * | |
2439 | * Duane W., Sept 16, 1996 | |
2440 | */ | |
2441 | ||
2442 | static void | |
88aad2e5 | 2443 | checkFailureRatio(err_type etype, hier_code hcode) |
7a2f978b | 2444 | { |
88aad2e5 | 2445 | static double magic_factor = 100.0; |
7a2f978b | 2446 | double n_good; |
2447 | double n_bad; | |
2448 | if (hcode == HIER_NONE) | |
2449 | return; | |
88aad2e5 | 2450 | n_good = magic_factor / (1.0 + request_failure_ratio); |
7a2f978b | 2451 | n_bad = magic_factor - n_good; |
88aad2e5 | 2452 | switch (etype) { |
7a2f978b | 2453 | case ERR_DNS_FAIL: |
2454 | case ERR_CONNECT_FAIL: | |
2455 | case ERR_READ_ERROR: | |
2456 | n_bad++; | |
2457 | break; | |
2458 | default: | |
2459 | n_good++; | |
2460 | } | |
88aad2e5 | 2461 | request_failure_ratio = n_bad / n_good; |
7a2f978b | 2462 | if (hit_only_mode_until > squid_curtime) |
2463 | return; | |
88aad2e5 | 2464 | if (request_failure_ratio < 1.0) |
7a2f978b | 2465 | return; |
93f9abd0 | 2466 | debug(33, 0) ("Failure Ratio at %4.2f\n", request_failure_ratio); |
2467 | debug(33, 0) ("Going into hit-only-mode for %d minutes...\n", | |
7a2f978b | 2468 | FAILURE_MODE_TIME / 60); |
2469 | hit_only_mode_until = squid_curtime + FAILURE_MODE_TIME; | |
88aad2e5 | 2470 | request_failure_ratio = 0.8; /* reset to something less than 1.0 */ |
7a2f978b | 2471 | } |
15df8349 | 2472 | |
2473 | void | |
2474 | clientHttpConnectionsOpen(void) | |
2475 | { | |
2476 | ushortlist *u; | |
2477 | int fd; | |
15df8349 | 2478 | for (u = Config.Port.http; u; u = u->next) { |
8daca701 | 2479 | enter_suid(); |
2480 | fd = comm_open(SOCK_STREAM, | |
2481 | 0, | |
2482 | Config.Addrs.tcp_incoming, | |
2483 | u->i, | |
2484 | COMM_NONBLOCKING, | |
2485 | "HTTP Socket"); | |
2486 | leave_suid(); | |
2487 | if (fd < 0) | |
2488 | continue; | |
2489 | comm_listen(fd); | |
2490 | commSetSelect(fd, COMM_SELECT_READ, httpAccept, NULL, 0); | |
eeb423fb | 2491 | /*commSetDefer(fd, httpAcceptDefer, NULL); */ |
8daca701 | 2492 | debug(1, 1) ("Accepting HTTP connections on port %d, FD %d.\n", |
2493 | (int) u->i, fd); | |
2494 | HttpSockets[NHttpSockets++] = fd; | |
15df8349 | 2495 | } |
2496 | if (NHttpSockets < 1) | |
8daca701 | 2497 | fatal("Cannot open HTTP Port"); |
15df8349 | 2498 | } |
c0fbae16 | 2499 | |
2500 | void | |
2501 | clientHttpConnectionsClose(void) | |
2502 | { | |
2503 | int i; | |
2504 | for (i = 0; i < NHttpSockets; i++) { | |
2505 | if (HttpSockets[i] >= 0) { | |
2506 | debug(1, 1) ("FD %d Closing HTTP connection\n", HttpSockets[i]); | |
2507 | comm_close(HttpSockets[i]); | |
2508 | HttpSockets[i] = -1; | |
2509 | } | |
2510 | } | |
2511 | NHttpSockets = 0; | |
2512 | } |