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3c66d057 | 1 | |
dd11e0b7 | 2 | /* |
de336bbe | 3 | * $Id: client_side.cc,v 1.224 1998/03/11 22:18:47 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/ |
dd11e0b7 | 9 | * -------------------------------------------------------- |
10 | * | |
11 | * Squid is the result of efforts by numerous individuals from the | |
12 | * Internet community. Development is led by Duane Wessels of the | |
13 | * National Laboratory for Applied Network Research and funded by | |
14 | * the National Science Foundation. | |
15 | * | |
16 | * This program is free software; you can redistribute it and/or modify | |
17 | * it under the terms of the GNU General Public License as published by | |
18 | * the Free Software Foundation; either version 2 of the License, or | |
19 | * (at your option) any later version. | |
20 | * | |
21 | * This program is distributed in the hope that it will be useful, | |
22 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
23 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
24 | * GNU General Public License for more details. | |
25 | * | |
26 | * You should have received a copy of the GNU General Public License | |
27 | * along with this program; if not, write to the Free Software | |
28 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
29 | * | |
30 | */ | |
f88bb09c | 31 | |
32 | #include "squid.h" | |
33 | ||
7a2f978b | 34 | static const char *const crlf = "\r\n"; |
cb69b4c7 | 35 | static const char *const proxy_auth_challenge = |
ee1679df | 36 | "Basic realm=\"Squid proxy-caching web server\""; |
7a2f978b | 37 | |
38 | #define REQUEST_BUF_SIZE 4096 | |
39 | #define FAILURE_MODE_TIME 300 | |
40 | ||
41 | /* Local functions */ | |
42 | ||
1b02b5be | 43 | static CWCB clientHandleIMSComplete; |
fc5d6f7f | 44 | static CWCB clientWriteComplete; |
7a2f978b | 45 | static PF clientReadRequest; |
46 | static PF connStateFree; | |
47 | static PF requestTimeout; | |
1b02b5be | 48 | static STCB clientGetHeadersForIMS; |
7a2f978b | 49 | static int CheckQuickAbort2(const clientHttpRequest *); |
1b02b5be | 50 | static int clientCheckTransferDone(clientHttpRequest *); |
7a2f978b | 51 | static void CheckQuickAbort(clientHttpRequest *); |
88aad2e5 | 52 | static void checkFailureRatio(err_type, hier_code); |
fb63215a | 53 | static void clientProcessMiss(clientHttpRequest *); |
7a2f978b | 54 | static void clientAppendReplyHeader(char *, const char *, size_t *, size_t); |
55 | size_t clientBuildReplyHeader(clientHttpRequest *, char *, size_t *, char *, size_t); | |
56 | static clientHttpRequest *parseHttpRequest(ConnStateData *, method_t *, int *, char **, size_t *); | |
582b6456 | 57 | static RH clientRedirectDone; |
1b02b5be | 58 | static STCB clientHandleIMSReply; |
f5b8bbc4 | 59 | static int clientGetsOldEntry(StoreEntry * new, StoreEntry * old, request_t * request); |
60 | static int checkAccelOnly(clientHttpRequest *); | |
7a2f978b | 61 | static STCB clientSendMoreData; |
62 | static STCB clientCacheHit; | |
50ddd7a4 | 63 | static void clientParseRequestHeaders(clientHttpRequest *); |
fb63215a | 64 | static void clientProcessRequest(clientHttpRequest *); |
65 | static void clientProcessExpired(void *data); | |
cb69b4c7 | 66 | static HttpReply *clientConstructProxyAuthReply(clientHttpRequest * http); |
50ddd7a4 | 67 | static int clientCachable(clientHttpRequest * http); |
68 | static int clientHierarchical(clientHttpRequest * http); | |
a7c05555 | 69 | static int isTcpHit(log_type code); |
ea6f43cd | 70 | |
38d7734b | 71 | static int |
382d851a | 72 | checkAccelOnly(clientHttpRequest * http) |
38d7734b | 73 | { |
74 | /* return TRUE if someone makes a proxy request to us and | |
75 | * we are in httpd-accel only mode */ | |
f1dc9b30 | 76 | if (!Config2.Accel.on) |
38d7734b | 77 | return 0; |
17a0a4ee | 78 | if (Config.onoff.accel_with_proxy) |
38d7734b | 79 | return 0; |
382d851a | 80 | if (http->request->protocol == PROTO_CACHEOBJ) |
38d7734b | 81 | return 0; |
382d851a | 82 | if (http->accel) |
38d7734b | 83 | return 0; |
84 | return 1; | |
85 | } | |
86 | ||
b8d8561b | 87 | void |
382d851a | 88 | clientAccessCheck(void *data) |
f88bb09c | 89 | { |
382d851a | 90 | clientHttpRequest *http = data; |
91 | ConnStateData *conn = http->conn; | |
75e88d56 | 92 | char *browser; |
17a0a4ee | 93 | if (Config.onoff.ident_lookup && conn->ident.state == IDENT_NONE) { |
382d851a | 94 | identStart(-1, conn, clientAccessCheck); |
ba1d2afa | 95 | return; |
96 | } | |
382d851a | 97 | if (checkAccelOnly(http)) { |
98 | clientAccessCheckDone(0, http); | |
75e88d56 | 99 | return; |
f88bb09c | 100 | } |
f182d1c5 | 101 | browser = mime_get_header(http->request->headers, "User-Agent"); |
f1dc9b30 | 102 | http->acl_checklist = aclChecklistCreate(Config.accessList.http, |
382d851a | 103 | http->request, |
104 | conn->peer.sin_addr, | |
75e88d56 | 105 | browser, |
382d851a | 106 | conn->ident.ident); |
107 | aclNBCheck(http->acl_checklist, clientAccessCheckDone, http); | |
f88bb09c | 108 | } |
109 | ||
cb69b4c7 | 110 | static HttpReply * |
ee1679df | 111 | clientConstructProxyAuthReply(clientHttpRequest * http) |
cb69b4c7 | 112 | { |
113 | ErrorState *err = errorCon(ERR_CACHE_ACCESS_DENIED, HTTP_PROXY_AUTHENTICATION_REQUIRED); | |
114 | HttpReply *rep; | |
115 | err->request = requestLink(http->request); | |
116 | rep = errorBuildReply(err); | |
117 | errorStateFree(err); | |
118 | /* add Authenticate header */ | |
119 | httpHeaderSetStr(&rep->hdr, HDR_PROXY_AUTHENTICATE, proxy_auth_challenge); | |
120 | return rep; | |
121 | } | |
fc5d6f7f | 122 | |
23d92c64 | 123 | StoreEntry * |
f44af445 | 124 | clientCreateStoreEntry(clientHttpRequest * h, method_t m, int flags) |
79e0dc20 | 125 | { |
126 | StoreEntry *e; | |
40defb17 | 127 | request_t *r; |
128 | /* | |
129 | * For erroneous requests, we might not have a h->request, | |
130 | * so make a fake one. | |
131 | */ | |
132 | if (h->request == NULL) { | |
7021844c | 133 | r = memAllocate(MEM_REQUEST_T); |
40defb17 | 134 | r->method = m; |
135 | r->protocol = PROTO_NONE; | |
136 | h->request = requestLink(r); | |
137 | } | |
23d92c64 | 138 | e = storeCreateEntry(h->uri, h->log_uri, flags, m); |
79e0dc20 | 139 | storeClientListAdd(e, h); |
7021844c | 140 | storeClientCopy(e, 0, 0, 4096, memAllocate(MEM_4K_BUF), clientSendMoreData, h); |
79e0dc20 | 141 | return e; |
142 | } | |
143 | ||
144 | ||
b8d8561b | 145 | void |
75e88d56 | 146 | clientAccessCheckDone(int answer, void *data) |
f88bb09c | 147 | { |
382d851a | 148 | clientHttpRequest *http = data; |
02922e76 | 149 | #if 0 |
e92d33a5 | 150 | char *redirectUrl = NULL; |
02922e76 | 151 | #else |
152 | int page_id = -1; | |
153 | #endif | |
9b312a19 | 154 | ErrorState *err = NULL; |
1bea1d83 | 155 | HttpReply *rep; |
23d92c64 | 156 | debug(33, 5) ("clientAccessCheckDone: '%s' answer=%d\n", http->uri, answer); |
382d851a | 157 | http->acl_checklist = NULL; |
fc5d6f7f | 158 | if (answer == ACCESS_ALLOWED) { |
23d92c64 | 159 | urlCanonical(http->request, http->uri); |
ce66013b | 160 | assert(http->redirect_state == REDIRECT_NONE); |
382d851a | 161 | http->redirect_state = REDIRECT_PENDING; |
162 | redirectStart(http, clientRedirectDone, http); | |
fc5d6f7f | 163 | } else if (answer == ACCESS_REQ_PROXY_AUTH) { |
164 | http->al.http.code = HTTP_PROXY_AUTHENTICATION_REQUIRED; | |
165 | http->log_type = LOG_TCP_DENIED; | |
f44af445 | 166 | http->entry = clientCreateStoreEntry(http, http->request->method, 0); |
1bea1d83 | 167 | /* create appropreate response */ |
168 | rep = clientConstructProxyAuthReply(http); | |
169 | httpReplySwapOut(rep, http->entry); | |
170 | /* do not need it anymore */ | |
171 | httpReplyDestroy(rep); | |
f88bb09c | 172 | } else { |
23d92c64 | 173 | debug(33, 5) ("Access Denied: %s\n", http->uri); |
02922e76 | 174 | debug(33, 5) ("AclMatchedName = %s\n", AclMatchedName ? AclMatchedName : "<null>"); |
79a15e0a | 175 | http->log_type = LOG_TCP_DENIED; |
f44af445 | 176 | http->entry = clientCreateStoreEntry(http, http->request->method, 0); |
02922e76 | 177 | page_id = aclGetDenyInfoPage(&Config.denyInfoList, AclMatchedName); |
178 | /* NOTE: don't use HTTP_UNAUTHORIZED because then the | |
179 | * stupid browser wants us to authenticate */ | |
180 | err = errorCon(ERR_ACCESS_DENIED, HTTP_FORBIDDEN); | |
181 | err->request = requestLink(http->request); | |
182 | err->src_addr = http->conn->peer.sin_addr; | |
183 | if (page_id > 0) | |
184 | err->page_id = page_id; | |
185 | errorAppendEntry(http->entry, err); | |
f88bb09c | 186 | } |
187 | } | |
188 | ||
b8d8561b | 189 | static void |
190 | clientRedirectDone(void *data, char *result) | |
f88bb09c | 191 | { |
382d851a | 192 | clientHttpRequest *http = data; |
88738790 | 193 | size_t l; |
c0cdaf99 | 194 | request_t *new_request = NULL; |
382d851a | 195 | request_t *old_request = http->request; |
23d92c64 | 196 | debug(33, 5) ("clientRedirectDone: '%s' result=%s\n", http->uri, |
f88bb09c | 197 | result ? result : "NULL"); |
ce66013b | 198 | assert(http->redirect_state == REDIRECT_PENDING); |
382d851a | 199 | http->redirect_state = REDIRECT_DONE; |
c0cdaf99 | 200 | if (result) |
20cc1450 | 201 | new_request = urlParse(old_request->method, result); |
c0cdaf99 | 202 | if (new_request) { |
23d92c64 | 203 | safe_free(http->uri); |
88738790 | 204 | /* need to malloc because the URL returned by the redirector might |
205 | * not be big enough to append the local domain | |
206 | * -- David Lamkin drl@net-tel.co.uk */ | |
207 | l = strlen(result) + Config.appendDomainLen + 5; | |
23d92c64 | 208 | http->uri = xcalloc(l, 1); |
209 | xstrncpy(http->uri, result, l); | |
20cc1450 | 210 | new_request->http_ver = old_request->http_ver; |
16b9d3df | 211 | new_request->headers = xstrdup(old_request->headers); |
2357f74a | 212 | new_request->headers_sz = old_request->headers_sz; |
6cf028ab | 213 | if (old_request->body) { |
214 | new_request->body = xmalloc(old_request->body_sz); | |
215 | xmemcpy(new_request->body, old_request->body, old_request->body_sz); | |
216 | new_request->body_sz = old_request->body_sz; | |
217 | } | |
20cc1450 | 218 | requestUnlink(old_request); |
382d851a | 219 | http->request = requestLink(new_request); |
23d92c64 | 220 | urlCanonical(http->request, http->uri); |
f88bb09c | 221 | } |
50ddd7a4 | 222 | clientParseRequestHeaders(http); |
23d92c64 | 223 | fd_note(http->conn->fd, http->uri); |
fb63215a | 224 | clientProcessRequest(http); |
e81957b7 | 225 | } |
226 | ||
fb63215a | 227 | static void |
228 | clientProcessExpired(void *data) | |
620da955 | 229 | { |
382d851a | 230 | clientHttpRequest *http = data; |
23d92c64 | 231 | char *url = http->uri; |
620da955 | 232 | StoreEntry *entry = NULL; |
23d92c64 | 233 | debug(33, 3) ("clientProcessExpired: '%s'\n", http->uri); |
79a15e0a | 234 | EBIT_SET(http->request->flags, REQ_REFRESH); |
382d851a | 235 | http->old_entry = http->entry; |
620da955 | 236 | entry = storeCreateEntry(url, |
23d92c64 | 237 | http->log_uri, |
382d851a | 238 | http->request->flags, |
239 | http->request->method); | |
620da955 | 240 | /* NOTE, don't call storeLockObject(), storeCreateEntry() does it */ |
fe96bbe6 | 241 | storeClientListAdd(entry, http); |
242 | storeClientListAdd(http->old_entry, http); | |
382d851a | 243 | entry->lastmod = http->old_entry->lastmod; |
50ddd7a4 | 244 | debug(33, 5) ("clientProcessExpired: setting lmt = %d\n", |
620da955 | 245 | entry->lastmod); |
d1a43e28 | 246 | entry->refcount++; /* EXPIRED CASE */ |
382d851a | 247 | http->entry = entry; |
248 | http->out.offset = 0; | |
fb63215a | 249 | protoDispatch(http->conn->fd, http->entry, http->request); |
f990cccc | 250 | /* Register with storage manager to receive updates when data comes in. */ |
0e473d70 | 251 | if (entry->store_status == STORE_ABORTED) |
6cf028ab | 252 | debug(33, 0) ("clientProcessExpired: entry->swap_status == STORE_ABORTED\n"); |
d89d1fb6 | 253 | storeClientCopy(entry, |
fe96bbe6 | 254 | http->out.offset, |
d89d1fb6 | 255 | http->out.offset, |
256 | 4096, | |
7021844c | 257 | memAllocate(MEM_4K_BUF), |
1b02b5be | 258 | clientHandleIMSReply, |
d89d1fb6 | 259 | http); |
620da955 | 260 | } |
261 | ||
91f4d519 | 262 | static int |
263 | clientGetsOldEntry(StoreEntry * new_entry, StoreEntry * old_entry, request_t * request) | |
264 | { | |
265 | /* If the reply is anything but "Not Modified" then | |
266 | * we must forward it to the client */ | |
cb69b4c7 | 267 | const http_status status = new_entry->mem_obj->reply->sline.status; |
268 | if (status != 304) { | |
269 | debug(33, 5) ("clientGetsOldEntry: NO, reply=%d\n", status); | |
91f4d519 | 270 | return 0; |
271 | } | |
272 | /* If the client did not send IMS in the request, then it | |
273 | * must get the old object, not this "Not Modified" reply */ | |
79a15e0a | 274 | if (!EBIT_TEST(request->flags, REQ_IMS)) { |
a3d5953d | 275 | debug(33, 5) ("clientGetsOldEntry: YES, no client IMS\n"); |
91f4d519 | 276 | return 1; |
277 | } | |
278 | /* If the client IMS time is prior to the entry LASTMOD time we | |
279 | * need to send the old object */ | |
280 | if (modifiedSince(old_entry, request)) { | |
a3d5953d | 281 | debug(33, 5) ("clientGetsOldEntry: YES, modified since %d\n", request->ims); |
91f4d519 | 282 | return 1; |
283 | } | |
a3d5953d | 284 | debug(33, 5) ("clientGetsOldEntry: NO, new one is fine\n"); |
91f4d519 | 285 | return 0; |
286 | } | |
287 | ||
288 | ||
52d4522b | 289 | static void |
1b02b5be | 290 | clientHandleIMSReply(void *data, char *buf, ssize_t size) |
620da955 | 291 | { |
382d851a | 292 | clientHttpRequest *http = data; |
382d851a | 293 | StoreEntry *entry = http->entry; |
620da955 | 294 | MemObject *mem = entry->mem_obj; |
9fb13bb6 | 295 | const char *url = storeUrl(entry); |
e92d33a5 | 296 | int unlink_request = 0; |
76cff1d4 | 297 | StoreEntry *oldentry; |
93f9abd0 | 298 | debug(33, 3) ("clientHandleIMSReply: %s, %d bytes\n", url, (int) size); |
3f6c0fb2 | 299 | memFree(MEM_4K_BUF, buf); |
76a5501f | 300 | buf = NULL; |
620da955 | 301 | /* unregister this handler */ |
070d29eb | 302 | if (size < 0 || entry->store_status == STORE_ABORTED) { |
1b02b5be | 303 | debug(33, 3) ("clientHandleIMSReply: ABORTED '%s'\n", url); |
c54e9052 | 304 | /* We have an existing entry, but failed to validate it */ |
accc6d47 | 305 | /* Its okay to send the old one anyway */ |
306 | http->log_type = LOG_TCP_REFRESH_FAIL_HIT; | |
307 | storeUnregister(entry, http); | |
308 | storeUnlockObject(entry); | |
309 | entry = http->entry = http->old_entry; | |
310 | entry->refcount++; | |
cb69b4c7 | 311 | } else if (mem->reply->sline.status == 0) { |
1b02b5be | 312 | debug(33, 3) ("clientHandleIMSReply: Incomplete headers for '%s'\n", url); |
0e473d70 | 313 | if (entry->store_status == STORE_ABORTED) |
6cf028ab | 314 | debug(33, 0) ("clientHandleIMSReply: entry->swap_status == STORE_ABORTED\n"); |
d89d1fb6 | 315 | storeClientCopy(entry, |
fe96bbe6 | 316 | http->out.offset + size, |
d89d1fb6 | 317 | http->out.offset, |
318 | 4096, | |
7021844c | 319 | memAllocate(MEM_4K_BUF), |
1b02b5be | 320 | clientHandleIMSReply, |
d89d1fb6 | 321 | http); |
52d4522b | 322 | return; |
382d851a | 323 | } else if (clientGetsOldEntry(entry, http->old_entry, http->request)) { |
620da955 | 324 | /* We initiated the IMS request, the client is not expecting |
76cff1d4 | 325 | * 304, so put the good one back. First, make sure the old entry |
326 | * headers have been loaded from disk. */ | |
382d851a | 327 | oldentry = http->old_entry; |
382d851a | 328 | http->log_type = LOG_TCP_REFRESH_HIT; |
d89d1fb6 | 329 | if (oldentry->mem_obj->request == NULL) { |
330 | oldentry->mem_obj->request = requestLink(mem->request); | |
331 | unlink_request = 1; | |
e92d33a5 | 332 | } |
64763c37 | 333 | /* Don't memcpy() the whole reply structure here. For example, |
334 | * www.thegist.com (Netscape/1.13) returns a content-length for | |
335 | * 304's which seems to be the length of the 304 HEADERS!!! and | |
336 | * not the body they refer to. */ | |
cb69b4c7 | 337 | httpReplyUpdateOnNotModified(entry->mem_obj->reply, oldentry->mem_obj->reply); |
d89d1fb6 | 338 | storeTimestampsSet(oldentry); |
382d851a | 339 | storeUnregister(entry, http); |
6d54aea8 | 340 | storeUnlockObject(entry); |
382d851a | 341 | entry = http->entry = oldentry; |
41fad779 | 342 | entry->timestamp = squid_curtime; |
657266fe | 343 | if (unlink_request) { |
e92d33a5 | 344 | requestUnlink(entry->mem_obj->request); |
657266fe | 345 | entry->mem_obj->request = NULL; |
346 | } | |
620da955 | 347 | } else { |
348 | /* the client can handle this reply, whatever it is */ | |
382d851a | 349 | http->log_type = LOG_TCP_REFRESH_MISS; |
cb69b4c7 | 350 | if (mem->reply->sline.status == 304) { |
382d851a | 351 | http->old_entry->timestamp = squid_curtime; |
352 | http->old_entry->refcount++; | |
353 | http->log_type = LOG_TCP_REFRESH_HIT; | |
d1a43e28 | 354 | } |
382d851a | 355 | storeUnregister(http->old_entry, http); |
356 | storeUnlockObject(http->old_entry); | |
620da955 | 357 | } |
382d851a | 358 | http->old_entry = NULL; /* done with old_entry */ |
e8479da9 | 359 | /* use clientCacheHit() here as the callback because we might |
6a54c60e | 360 | * be swapping in from disk, and the file might not really be |
361 | * there */ | |
0e473d70 | 362 | if (entry->store_status == STORE_ABORTED) { |
6cf028ab | 363 | debug(33, 0) ("clientHandleIMSReply: IMS swapin failed on aborted object\n"); |
364 | http->log_type = LOG_TCP_SWAPFAIL_MISS; | |
365 | clientProcessMiss(http); | |
366 | return; | |
367 | } | |
d89d1fb6 | 368 | storeClientCopy(entry, |
fe96bbe6 | 369 | http->out.offset, |
d89d1fb6 | 370 | http->out.offset, |
371 | 4096, | |
7021844c | 372 | memAllocate(MEM_4K_BUF), |
e8479da9 | 373 | clientCacheHit, |
d89d1fb6 | 374 | http); |
620da955 | 375 | } |
91f4d519 | 376 | |
377 | int | |
304d07cb | 378 | modifiedSince(StoreEntry * entry, request_t * request) |
91f4d519 | 379 | { |
380 | int object_length; | |
381 | MemObject *mem = entry->mem_obj; | |
9fb13bb6 | 382 | debug(33, 3) ("modifiedSince: '%s'\n", storeUrl(entry)); |
91f4d519 | 383 | if (entry->lastmod < 0) |
384 | return 1; | |
385 | /* Find size of the object */ | |
cb69b4c7 | 386 | object_length = httpReplyContentLen(mem->reply); |
387 | if (object_length < 0) | |
07304bf9 | 388 | object_length = contentLen(entry); |
91f4d519 | 389 | if (entry->lastmod > request->ims) { |
a3d5953d | 390 | debug(33, 3) ("--> YES: entry newer than client\n"); |
91f4d519 | 391 | return 1; |
392 | } else if (entry->lastmod < request->ims) { | |
a3d5953d | 393 | debug(33, 3) ("--> NO: entry older than client\n"); |
91f4d519 | 394 | return 0; |
395 | } else if (request->imslen < 0) { | |
a3d5953d | 396 | debug(33, 3) ("--> NO: same LMT, no client length\n"); |
91f4d519 | 397 | return 0; |
398 | } else if (request->imslen == object_length) { | |
a3d5953d | 399 | debug(33, 3) ("--> NO: same LMT, same length\n"); |
91f4d519 | 400 | return 0; |
401 | } else { | |
a3d5953d | 402 | debug(33, 3) ("--> YES: same LMT, different length\n"); |
91f4d519 | 403 | return 1; |
404 | } | |
405 | } | |
b3b64e58 | 406 | |
407 | char * | |
382d851a | 408 | clientConstructTraceEcho(clientHttpRequest * http) |
b3b64e58 | 409 | { |
410 | LOCAL_ARRAY(char, line, 256); | |
411 | LOCAL_ARRAY(char, buf, 8192); | |
412 | size_t len; | |
413 | memset(buf, '\0', 8192); | |
042461c3 | 414 | snprintf(buf, 8192, "HTTP/1.0 200 OK\r\n"); |
56878878 | 415 | snprintf(line, 256, "Date: %s\r\n", mkrfc1123(squid_curtime)); |
b3b64e58 | 416 | strcat(buf, line); |
042461c3 | 417 | snprintf(line, 256, "Server: Squid/%s\r\n", SQUID_VERSION); |
b3b64e58 | 418 | strcat(buf, line); |
042461c3 | 419 | snprintf(line, 256, "Content-Type: message/http\r\n"); |
b3b64e58 | 420 | strcat(buf, line); |
421 | strcat(buf, "\r\n"); | |
422 | len = strlen(buf); | |
382d851a | 423 | httpBuildRequestHeader(http->request, |
424 | http->request, | |
b3b64e58 | 425 | NULL, /* entry */ |
b3b64e58 | 426 | NULL, /* in_len */ |
427 | buf + len, | |
428 | 8192 - len, | |
603a02fd | 429 | http->conn->fd, |
430 | 0); /* flags */ | |
382d851a | 431 | http->log_type = LOG_TCP_MISS; |
4869e8a1 | 432 | http->http_code = HTTP_OK; |
b3b64e58 | 433 | return buf; |
434 | } | |
a90eae18 | 435 | |
436 | void | |
382d851a | 437 | clientPurgeRequest(clientHttpRequest * http) |
a90eae18 | 438 | { |
382d851a | 439 | int fd = http->conn->fd; |
a90eae18 | 440 | StoreEntry *entry; |
9b312a19 | 441 | ErrorState *err = NULL; |
9fb13bb6 | 442 | const cache_key *k; |
cb69b4c7 | 443 | MemBuf mb; |
9b312a19 | 444 | debug(33, 3) ("Config.onoff.enable_purge = %d\n", Config.onoff.enable_purge); |
17a0a4ee | 445 | if (!Config.onoff.enable_purge) { |
79a15e0a | 446 | http->log_type = LOG_TCP_DENIED; |
fe40a877 | 447 | err = errorCon(ERR_ACCESS_DENIED, HTTP_FORBIDDEN); |
9b312a19 | 448 | err->request = requestLink(http->request); |
449 | err->src_addr = http->conn->peer.sin_addr; | |
f44af445 | 450 | http->entry = clientCreateStoreEntry(http, http->request->method, 0); |
79e0dc20 | 451 | errorAppendEntry(http->entry, err); |
a90eae18 | 452 | return; |
453 | } | |
382d851a | 454 | http->log_type = LOG_TCP_MISS; |
23d92c64 | 455 | k = storeKeyPublic(http->uri, METHOD_GET); |
9fb13bb6 | 456 | if ((entry = storeGet(k)) == NULL) { |
9b312a19 | 457 | http->http_code = HTTP_NOT_FOUND; |
a90eae18 | 458 | } else { |
459 | storeRelease(entry); | |
9b312a19 | 460 | http->http_code = HTTP_OK; |
a90eae18 | 461 | } |
cb69b4c7 | 462 | mb = httpPackedReply(1.0, http->http_code, NULL, 0, 0, -1); |
463 | comm_write_mbuf(fd, mb, clientWriteComplete, http); | |
a90eae18 | 464 | } |
e33ba616 | 465 | |
466 | int | |
ea3a2a69 | 467 | checkNegativeHit(StoreEntry * e) |
e33ba616 | 468 | { |
79a15e0a | 469 | if (!EBIT_TEST(e->flag, ENTRY_NEGCACHED)) |
ea3a2a69 | 470 | return 0; |
471 | if (e->expires <= squid_curtime) | |
472 | return 0; | |
473 | if (e->store_status != STORE_OK) | |
474 | return 0; | |
475 | return 1; | |
e33ba616 | 476 | } |
7a2f978b | 477 | |
a7c05555 | 478 | void |
0e473d70 | 479 | clientUpdateCounters(clientHttpRequest * http) |
a7c05555 | 480 | { |
ee1679df | 481 | int svc_time = tvSubMsec(http->start, current_time); |
482 | icp_ping_data *i; | |
0e473d70 | 483 | Counter.client_http.requests++; |
484 | kb_incr(&Counter.client_http.kbytes_in, http->req_sz); | |
485 | kb_incr(&Counter.client_http.kbytes_out, http->out.size); | |
486 | if (isTcpHit(http->log_type)) { | |
487 | Counter.client_http.hits++; | |
488 | kb_incr(&Counter.client_http.hit_kbytes_out, http->out.size); | |
489 | } | |
490 | if (http->request->err_type != ERR_NONE) | |
491 | Counter.client_http.errors++; | |
12cf1be2 | 492 | statHistCount(&Counter.client_http.all_svc_time, svc_time); |
ee1679df | 493 | /* |
494 | * The idea here is not to be complete, but to get service times | |
495 | * for only well-defined types. For example, we don't include | |
496 | * LOG_TCP_REFRESH_FAIL_HIT because its not really a cache hit | |
497 | * (we *tried* to validate it, but failed). | |
498 | */ | |
499 | switch (http->log_type) { | |
500 | case LOG_TCP_IMS_HIT: | |
12cf1be2 | 501 | statHistCount(&Counter.client_http.nm_svc_time, svc_time); |
ee1679df | 502 | break; |
503 | case LOG_TCP_HIT: | |
504 | case LOG_TCP_MEM_HIT: | |
12cf1be2 | 505 | statHistCount(&Counter.client_http.hit_svc_time, svc_time); |
ee1679df | 506 | break; |
507 | case LOG_TCP_MISS: | |
508 | case LOG_TCP_CLIENT_REFRESH_MISS: | |
12cf1be2 | 509 | statHistCount(&Counter.client_http.miss_svc_time, svc_time); |
ee1679df | 510 | break; |
511 | default: | |
512 | /* make compiler warnings go away */ | |
513 | break; | |
514 | } | |
515 | i = &http->request->hier.icp; | |
516 | if (0 != i->stop.tv_sec) | |
12cf1be2 | 517 | statHistCount(&Counter.icp.query_svc_time, tvSubUsec(i->start, i->stop)); |
a7c05555 | 518 | } |
519 | ||
7a2f978b | 520 | static void |
521 | httpRequestFree(void *data) | |
522 | { | |
523 | clientHttpRequest *http = data; | |
524 | clientHttpRequest **H; | |
525 | ConnStateData *conn = http->conn; | |
526 | StoreEntry *entry = http->entry; | |
527 | request_t *request = http->request; | |
528 | MemObject *mem = NULL; | |
93f9abd0 | 529 | debug(33, 3) ("httpRequestFree: %s\n", storeUrl(entry)); |
1b02b5be | 530 | if (!clientCheckTransferDone(http)) { |
7a2f978b | 531 | if (entry) |
532 | storeUnregister(entry, http); /* unregister BEFORE abort */ | |
533 | CheckQuickAbort(http); | |
534 | entry = http->entry; /* reset, IMS might have changed it */ | |
535 | if (entry && entry->ping_status == PING_WAITING) | |
536 | storeReleaseRequest(entry); | |
79d39a72 | 537 | protoUnregister(entry, request); |
7a2f978b | 538 | } |
539 | assert(http->log_type < LOG_TYPE_MAX); | |
540 | if (entry) | |
541 | mem = entry->mem_obj; | |
542 | if (http->out.size || http->log_type) { | |
543 | http->al.icp.opcode = 0; | |
ef65d6ca | 544 | http->al.url = http->log_uri; |
545 | debug(33, 9) ("httpRequestFree: al.url='%s'\n", http->al.url); | |
7a2f978b | 546 | if (mem) { |
cb69b4c7 | 547 | http->al.http.code = mem->reply->sline.status; |
548 | http->al.http.content_type = httpReplyContentType(mem->reply); | |
7a2f978b | 549 | } |
550 | http->al.cache.caddr = conn->log_addr; | |
551 | http->al.cache.size = http->out.size; | |
552 | http->al.cache.code = http->log_type; | |
553 | http->al.cache.msec = tvSubMsec(http->start, current_time); | |
554 | http->al.cache.ident = conn->ident.ident; | |
555 | if (request) { | |
556 | http->al.http.method = request->method; | |
557 | http->al.headers.request = request->headers; | |
558 | http->al.hier = request->hier; | |
559 | } | |
560 | accessLogLog(&http->al); | |
a7c05555 | 561 | clientUpdateCounters(http); |
7a2f978b | 562 | clientdbUpdate(conn->peer.sin_addr, http->log_type, PROTO_HTTP); |
563 | } | |
564 | if (http->redirect_state == REDIRECT_PENDING) | |
23d92c64 | 565 | redirectUnregister(http->uri, http); |
7a2f978b | 566 | if (http->acl_checklist) |
567 | aclChecklistFree(http->acl_checklist); | |
88aad2e5 | 568 | if (request) |
c24fca87 | 569 | checkFailureRatio(request->err_type, http->al.hier.code); |
23d92c64 | 570 | safe_free(http->uri); |
571 | safe_free(http->log_uri); | |
7a2f978b | 572 | safe_free(http->al.headers.reply); |
573 | if (entry) { | |
574 | http->entry = NULL; | |
575 | storeUnregister(entry, http); | |
576 | storeUnlockObject(entry); | |
577 | } | |
578 | /* old_entry might still be set if we didn't yet get the reply | |
1b02b5be | 579 | * code in clientHandleIMSReply() */ |
7a2f978b | 580 | if (http->old_entry) { |
581 | storeUnregister(http->old_entry, http); | |
582 | storeUnlockObject(http->old_entry); | |
583 | http->old_entry = NULL; | |
584 | } | |
585 | requestUnlink(http->request); | |
586 | assert(http != http->next); | |
587 | assert(http->conn->chr != NULL); | |
588 | H = &http->conn->chr; | |
589 | while (*H) { | |
590 | if (*H == http) | |
591 | break; | |
592 | H = &(*H)->next; | |
593 | } | |
594 | assert(*H != NULL); | |
595 | *H = http->next; | |
596 | http->next = NULL; | |
597 | cbdataFree(http); | |
598 | } | |
599 | ||
600 | /* This is a handler normally called by comm_close() */ | |
601 | static void | |
602 | connStateFree(int fd, void *data) | |
603 | { | |
604 | ConnStateData *connState = data; | |
605 | clientHttpRequest *http; | |
93f9abd0 | 606 | debug(33, 3) ("connStateFree: FD %d\n", fd); |
7a2f978b | 607 | assert(connState != NULL); |
79d39a72 | 608 | while ((http = connState->chr) != NULL) { |
7a2f978b | 609 | assert(http->conn == connState); |
610 | assert(connState->chr != connState->chr->next); | |
611 | httpRequestFree(http); | |
612 | } | |
613 | if (connState->ident.fd > -1) | |
614 | comm_close(connState->ident.fd); | |
615 | safe_free(connState->in.buf); | |
59c4d35b | 616 | /* XXX account connState->in.buf */ |
7a2f978b | 617 | pconnHistCount(0, connState->nrequests); |
618 | cbdataFree(connState); | |
619 | } | |
620 | ||
621 | static void | |
50ddd7a4 | 622 | clientParseRequestHeaders(clientHttpRequest * http) |
7a2f978b | 623 | { |
624 | request_t *request = http->request; | |
625 | char *request_hdr = request->headers; | |
626 | char *t = NULL; | |
627 | request->ims = -2; | |
628 | request->imslen = -1; | |
629 | if ((t = mime_get_header(request_hdr, "If-Modified-Since"))) { | |
79a15e0a | 630 | EBIT_SET(request->flags, REQ_IMS); |
7a2f978b | 631 | request->ims = parse_rfc1123(t); |
632 | while ((t = strchr(t, ';'))) { | |
633 | for (t++; isspace(*t); t++); | |
634 | if (strncasecmp(t, "length=", 7) == 0) | |
635 | request->imslen = atoi(t + 7); | |
636 | } | |
637 | } | |
638 | if ((t = mime_get_header(request_hdr, "Pragma"))) { | |
639 | if (!strcasecmp(t, "no-cache")) | |
79a15e0a | 640 | EBIT_SET(request->flags, REQ_NOCACHE); |
7a2f978b | 641 | } |
642 | if (mime_get_header(request_hdr, "Range")) { | |
79a15e0a | 643 | EBIT_SET(request->flags, REQ_NOCACHE); |
644 | EBIT_SET(request->flags, REQ_RANGE); | |
7a2f978b | 645 | } else if (mime_get_header(request_hdr, "Request-Range")) { |
79a15e0a | 646 | EBIT_SET(request->flags, REQ_NOCACHE); |
647 | EBIT_SET(request->flags, REQ_RANGE); | |
7a2f978b | 648 | } |
649 | if (mime_get_header(request_hdr, "Authorization")) | |
79a15e0a | 650 | EBIT_SET(request->flags, REQ_AUTH); |
7a2f978b | 651 | if (request->login[0] != '\0') |
79a15e0a | 652 | EBIT_SET(request->flags, REQ_AUTH); |
7a2f978b | 653 | if ((t = mime_get_header(request_hdr, "Proxy-Connection"))) { |
654 | if (!strcasecmp(t, "Keep-Alive")) | |
79a15e0a | 655 | EBIT_SET(request->flags, REQ_PROXY_KEEPALIVE); |
7a2f978b | 656 | } |
657 | if ((t = mime_get_header(request_hdr, "Via"))) | |
658 | if (strstr(t, ThisCache)) { | |
659 | if (!http->accel) { | |
93f9abd0 | 660 | debug(33, 1) ("WARNING: Forwarding loop detected for '%s'\n", |
23d92c64 | 661 | http->uri); |
93f9abd0 | 662 | debug(33, 1) ("--> %s\n", t); |
7a2f978b | 663 | } |
79a15e0a | 664 | EBIT_SET(request->flags, REQ_LOOPDETECT); |
7a2f978b | 665 | } |
666 | #if USE_USERAGENT_LOG | |
667 | if ((t = mime_get_header(request_hdr, "User-Agent"))) | |
668 | logUserAgent(fqdnFromAddr(http->conn->peer.sin_addr), t); | |
669 | #endif | |
670 | request->max_age = -1; | |
671 | if ((t = mime_get_header(request_hdr, "Cache-control"))) { | |
672 | if (!strncasecmp(t, "Max-age=", 8)) | |
673 | request->max_age = atoi(t + 8); | |
674 | } | |
675 | if (request->method == METHOD_TRACE) { | |
676 | if ((t = mime_get_header(request_hdr, "Max-Forwards"))) | |
677 | request->max_forwards = atoi(t); | |
678 | } | |
50ddd7a4 | 679 | if (clientCachable(http)) |
680 | EBIT_SET(request->flags, REQ_CACHABLE); | |
681 | if (clientHierarchical(http)) | |
682 | EBIT_SET(request->flags, REQ_HIERARCHICAL); | |
93f9abd0 | 683 | debug(33, 5) ("clientParseRequestHeaders: REQ_NOCACHE = %s\n", |
50ddd7a4 | 684 | EBIT_TEST(request->flags, REQ_NOCACHE) ? "SET" : "NOT SET"); |
93f9abd0 | 685 | debug(33, 5) ("clientParseRequestHeaders: REQ_CACHABLE = %s\n", |
50ddd7a4 | 686 | EBIT_TEST(request->flags, REQ_CACHABLE) ? "SET" : "NOT SET"); |
93f9abd0 | 687 | debug(33, 5) ("clientParseRequestHeaders: REQ_HIERARCHICAL = %s\n", |
50ddd7a4 | 688 | EBIT_TEST(request->flags, REQ_HIERARCHICAL) ? "SET" : "NOT SET"); |
7a2f978b | 689 | } |
690 | ||
691 | static int | |
50ddd7a4 | 692 | clientCachable(clientHttpRequest * http) |
7a2f978b | 693 | { |
23d92c64 | 694 | const char *url = http->uri; |
7a2f978b | 695 | request_t *req = http->request; |
696 | method_t method = req->method; | |
697 | const wordlist *p; | |
698 | for (p = Config.cache_stoplist; p; p = p->next) { | |
699 | if (strstr(url, p->key)) | |
700 | return 0; | |
701 | } | |
702 | if (Config.cache_stop_relist) | |
703 | if (aclMatchRegex(Config.cache_stop_relist, url)) | |
704 | return 0; | |
705 | if (req->protocol == PROTO_HTTP) | |
706 | return httpCachable(method); | |
707 | /* FTP is always cachable */ | |
708 | if (req->protocol == PROTO_GOPHER) | |
709 | return gopherCachable(url); | |
710 | if (req->protocol == PROTO_WAIS) | |
711 | return 0; | |
712 | if (method == METHOD_CONNECT) | |
713 | return 0; | |
714 | if (method == METHOD_TRACE) | |
715 | return 0; | |
716 | if (req->protocol == PROTO_CACHEOBJ) | |
717 | return 0; | |
718 | return 1; | |
719 | } | |
720 | ||
721 | /* Return true if we can query our neighbors for this object */ | |
722 | static int | |
50ddd7a4 | 723 | clientHierarchical(clientHttpRequest * http) |
7a2f978b | 724 | { |
23d92c64 | 725 | const char *url = http->uri; |
7a2f978b | 726 | request_t *request = http->request; |
727 | method_t method = request->method; | |
728 | const wordlist *p = NULL; | |
729 | ||
730 | /* IMS needs a private key, so we can use the hierarchy for IMS only | |
731 | * if our neighbors support private keys */ | |
79a15e0a | 732 | if (EBIT_TEST(request->flags, REQ_IMS) && !neighbors_do_private_keys) |
7a2f978b | 733 | return 0; |
79a15e0a | 734 | if (EBIT_TEST(request->flags, REQ_AUTH)) |
7a2f978b | 735 | return 0; |
736 | if (method == METHOD_TRACE) | |
737 | return 1; | |
738 | if (method != METHOD_GET) | |
739 | return 0; | |
740 | /* scan hierarchy_stoplist */ | |
741 | for (p = Config.hierarchy_stoplist; p; p = p->next) | |
742 | if (strstr(url, p->key)) | |
743 | return 0; | |
79a15e0a | 744 | if (EBIT_TEST(request->flags, REQ_LOOPDETECT)) |
7a2f978b | 745 | return 0; |
746 | if (request->protocol == PROTO_HTTP) | |
747 | return httpCachable(method); | |
748 | if (request->protocol == PROTO_GOPHER) | |
749 | return gopherCachable(url); | |
750 | if (request->protocol == PROTO_WAIS) | |
751 | return 0; | |
752 | if (request->protocol == PROTO_CACHEOBJ) | |
753 | return 0; | |
754 | return 1; | |
755 | } | |
756 | ||
a7c05555 | 757 | static int |
7a2f978b | 758 | isTcpHit(log_type code) |
759 | { | |
760 | /* this should be a bitmap for better optimization */ | |
761 | if (code == LOG_TCP_HIT) | |
762 | return 1; | |
763 | if (code == LOG_TCP_IMS_HIT) | |
764 | return 1; | |
765 | if (code == LOG_TCP_REFRESH_FAIL_HIT) | |
766 | return 1; | |
767 | if (code == LOG_TCP_REFRESH_HIT) | |
768 | return 1; | |
769 | if (code == LOG_TCP_NEGATIVE_HIT) | |
770 | return 1; | |
771 | if (code == LOG_TCP_MEM_HIT) | |
772 | return 1; | |
773 | return 0; | |
774 | } | |
775 | ||
776 | static void | |
777 | clientAppendReplyHeader(char *hdr, const char *line, size_t * sz, size_t max) | |
778 | { | |
779 | size_t n = *sz + strlen(line) + 2; | |
780 | if (n >= max) | |
781 | return; | |
782 | strcpy(hdr + (*sz), line); | |
783 | strcat(hdr + (*sz), crlf); | |
784 | *sz = n; | |
785 | } | |
786 | ||
adba4a64 | 787 | /* this entire function has to be rewriten using new interfaces @?@ @?@ */ |
7a2f978b | 788 | size_t |
789 | clientBuildReplyHeader(clientHttpRequest * http, | |
790 | char *hdr_in, | |
791 | size_t * in_len, | |
792 | char *hdr_out, | |
793 | size_t out_sz) | |
794 | { | |
ab013258 | 795 | LOCAL_ARRAY(char, no_forward, 1024); |
7a2f978b | 796 | char *xbuf; |
797 | char *ybuf; | |
798 | char *t = NULL; | |
799 | char *end = NULL; | |
800 | size_t len = 0; | |
801 | size_t hdr_len = 0; | |
802 | size_t l; | |
803 | end = mime_headers_end(hdr_in); | |
804 | if (end == NULL) { | |
93f9abd0 | 805 | debug(33, 3) ("clientBuildReplyHeader: DIDN'T FIND END-OF-HEADERS\n"); |
7a2f978b | 806 | return 0; |
807 | } | |
7021844c | 808 | xbuf = memAllocate(MEM_4K_BUF); |
809 | ybuf = memAllocate(MEM_4K_BUF); | |
7a2f978b | 810 | for (t = hdr_in; t < end; t += strcspn(t, crlf), t += strspn(t, crlf)) { |
811 | hdr_len = t - hdr_in; | |
812 | l = strcspn(t, crlf) + 1; | |
813 | xstrncpy(xbuf, t, l > 4096 ? 4096 : l); | |
ae1acd0b | 814 | /* enforce 1.0 reply version, this hack will be rewritten */ |
2ac76861 | 815 | if (!hdr_len && !strncasecmp(xbuf, "HTTP/", 5) && l > 8 && |
816 | (isspace(xbuf[8]) || isspace(xbuf[9]))) | |
817 | xmemmove(xbuf + 5, "1.0 ", 4); | |
7a2f978b | 818 | #if 0 |
819 | if (strncasecmp(xbuf, "Accept-Ranges:", 14) == 0) | |
820 | continue; | |
821 | if (strncasecmp(xbuf, "Etag:", 5) == 0) | |
822 | continue; | |
823 | #endif | |
824 | if (strncasecmp(xbuf, "Proxy-Connection:", 17) == 0) | |
825 | continue; | |
ab013258 | 826 | if (strncasecmp(xbuf, "Connection:", 11) == 0) { |
827 | handleConnectionHeader(0, no_forward, &xbuf[11]); | |
7a2f978b | 828 | continue; |
ab013258 | 829 | } |
7a2f978b | 830 | if (strncasecmp(xbuf, "Keep-Alive:", 11) == 0) |
831 | continue; | |
832 | if (strncasecmp(xbuf, "Set-Cookie:", 11) == 0) | |
833 | if (isTcpHit(http->log_type)) | |
834 | continue; | |
ab013258 | 835 | if (!handleConnectionHeader(1, no_forward, xbuf)) |
836 | clientAppendReplyHeader(hdr_out, xbuf, &len, out_sz - 512); | |
7a2f978b | 837 | } |
838 | hdr_len = end - hdr_in; | |
839 | /* Append X-Cache: */ | |
02941a5d | 840 | snprintf(ybuf, 4096, "X-Cache: %s from %s", |
841 | isTcpHit(http->log_type) ? "HIT" : "MISS", | |
842 | getMyHostname()); | |
7a2f978b | 843 | clientAppendReplyHeader(hdr_out, ybuf, &len, out_sz); |
844 | /* Append Proxy-Connection: */ | |
79a15e0a | 845 | if (EBIT_TEST(http->request->flags, REQ_PROXY_KEEPALIVE)) { |
7a2f978b | 846 | snprintf(ybuf, 4096, "Proxy-Connection: Keep-Alive"); |
847 | clientAppendReplyHeader(hdr_out, ybuf, &len, out_sz); | |
848 | } | |
849 | clientAppendReplyHeader(hdr_out, null_string, &len, out_sz); | |
850 | if (in_len) | |
851 | *in_len = hdr_len; | |
852 | if ((l = strlen(hdr_out)) != len) { | |
853 | debug_trap("clientBuildReplyHeader: size mismatch"); | |
854 | len = l; | |
855 | } | |
93f9abd0 | 856 | debug(33, 3) ("clientBuildReplyHeader: OUTPUT:\n%s\n", hdr_out); |
3f6c0fb2 | 857 | memFree(MEM_4K_BUF, xbuf); |
858 | memFree(MEM_4K_BUF, ybuf); | |
de336bbe | 859 | /* temporary kludge to test headers, remove it @?@ @?@ */ |
860 | { | |
861 | extern void httpHeaderTestParser(const char *hstr); | |
862 | httpHeaderTestParser(hdr_out); | |
863 | } | |
864 | /* end of kludge */ | |
7a2f978b | 865 | return len; |
866 | } | |
867 | ||
4c323c5f | 868 | static void |
7a2f978b | 869 | clientCacheHit(void *data, char *buf, ssize_t size) |
870 | { | |
871 | clientHttpRequest *http = data; | |
93f9abd0 | 872 | debug(33, 3) ("clientCacheHit: %s, %d bytes\n", http->uri, (int) size); |
7a2f978b | 873 | if (size >= 0) { |
874 | clientSendMoreData(data, buf, size); | |
875 | } else if (http->entry == NULL) { | |
93f9abd0 | 876 | debug(33, 3) ("clientCacheHit: request aborted\n"); |
7a2f978b | 877 | } else { |
878 | /* swap in failure */ | |
93f9abd0 | 879 | debug(33, 3) ("clientCacheHit: swapin failure for %s\n", http->uri); |
7a2f978b | 880 | http->log_type = LOG_TCP_SWAPFAIL_MISS; |
6cf028ab | 881 | if (http->entry) |
882 | storeRelease(http->entry); | |
fb63215a | 883 | clientProcessMiss(http); |
7a2f978b | 884 | } |
885 | } | |
886 | ||
4c323c5f | 887 | static void |
7a2f978b | 888 | clientSendMoreData(void *data, char *buf, ssize_t size) |
889 | { | |
890 | clientHttpRequest *http = data; | |
891 | StoreEntry *entry = http->entry; | |
892 | ConnStateData *conn = http->conn; | |
893 | int fd = conn->fd; | |
894 | char *p = NULL; | |
895 | size_t hdrlen; | |
896 | size_t l = 0; | |
897 | size_t writelen; | |
898 | char *newbuf; | |
3f6c0fb2 | 899 | FREE *freefunc = memFree4K; |
7a2f978b | 900 | int hack = 0; |
901 | char C = '\0'; | |
93f9abd0 | 902 | debug(33, 5) ("clientSendMoreData: %s, %d bytes\n", http->uri, (int) size); |
7a2f978b | 903 | assert(size <= SM_PAGE_SIZE); |
40defb17 | 904 | assert(http->request != NULL); |
93f9abd0 | 905 | debug(33, 5) ("clientSendMoreData: FD %d '%s', out.offset=%d \n", |
7a2f978b | 906 | fd, storeUrl(entry), http->out.offset); |
907 | if (conn->chr != http) { | |
908 | /* there is another object in progress, defer this one */ | |
a43b3862 | 909 | debug(0, 0) ("clientSendMoreData: Deferring %s\n", storeUrl(entry)); |
7a2f978b | 910 | freefunc(buf); |
911 | return; | |
912 | } else if (entry->store_status == STORE_ABORTED) { | |
913 | freefunc(buf); | |
914 | return; | |
915 | } else if (size < 0) { | |
916 | freefunc(buf); | |
917 | return; | |
918 | } else if (size == 0) { | |
919 | clientWriteComplete(fd, NULL, 0, DISK_OK, http); | |
920 | freefunc(buf); | |
921 | return; | |
922 | } | |
923 | writelen = size; | |
40defb17 | 924 | if (http->out.offset == 0) { |
7a2f978b | 925 | if (Config.onoff.log_mime_hdrs) { |
926 | if ((p = mime_headers_end(buf))) { | |
927 | safe_free(http->al.headers.reply); | |
928 | http->al.headers.reply = xcalloc(1 + p - buf, 1); | |
929 | xstrncpy(http->al.headers.reply, buf, p - buf); | |
930 | } | |
931 | } | |
932 | /* make sure 'buf' is null terminated somewhere */ | |
933 | if (size == SM_PAGE_SIZE) { | |
934 | hack = 1; | |
935 | size--; | |
936 | C = *(buf + size); | |
937 | } | |
938 | *(buf + size) = '\0'; | |
7021844c | 939 | newbuf = memAllocate(MEM_8K_BUF); |
7a2f978b | 940 | hdrlen = 0; |
ab013258 | 941 | |
7a2f978b | 942 | l = clientBuildReplyHeader(http, buf, &hdrlen, newbuf, 8192); |
943 | if (hack) | |
944 | *(buf + size++) = C; | |
945 | if (l != 0) { | |
946 | writelen = l + size - hdrlen; | |
947 | assert(writelen <= 8192); | |
948 | /* | |
949 | * l is the length of the new headers in newbuf | |
950 | * hdrlen is the length of the old headers in buf | |
951 | * size - hdrlen is the amount of body in buf | |
952 | */ | |
93f9abd0 | 953 | debug(33, 3) ("clientSendMoreData: Appending %d bytes after headers\n", |
7a2f978b | 954 | (int) (size - hdrlen)); |
6cf028ab | 955 | if (((size - hdrlen) + l) > 8192) { |
0e473d70 | 956 | debug(0, 0) ("Size, hdrlen, l %d, %d, %d\n", size, hdrlen, l); |
6cf028ab | 957 | return; |
958 | } | |
7a2f978b | 959 | xmemcpy(newbuf + l, buf + hdrlen, size - hdrlen); |
960 | /* replace buf with newbuf */ | |
961 | freefunc(buf); | |
962 | buf = newbuf; | |
3f6c0fb2 | 963 | freefunc = memFree8K; |
7a2f978b | 964 | newbuf = NULL; |
965 | } else { | |
3f6c0fb2 | 966 | memFree(MEM_8K_BUF, newbuf); |
7a2f978b | 967 | newbuf = NULL; |
968 | if (size < SM_PAGE_SIZE && entry->store_status == STORE_PENDING) { | |
969 | /* wait for more to arrive */ | |
970 | storeClientCopy(entry, | |
971 | http->out.offset + size, | |
972 | http->out.offset, | |
973 | SM_PAGE_SIZE, | |
974 | buf, | |
975 | clientSendMoreData, | |
976 | http); | |
977 | return; | |
978 | } | |
979 | } | |
980 | } | |
981 | http->out.offset += size; | |
40defb17 | 982 | /* |
983 | * ick, this is gross | |
984 | */ | |
7a2f978b | 985 | if (http->request->method == METHOD_HEAD) { |
986 | if ((p = mime_headers_end(buf))) { | |
987 | *p = '\0'; | |
988 | writelen = p - buf; | |
989 | /* force end */ | |
f68b5d81 | 990 | if (entry->store_status == STORE_PENDING) |
c24fca87 | 991 | http->out.offset = entry->mem_obj->inmem_hi; |
f68b5d81 | 992 | else |
07304bf9 | 993 | http->out.offset = objectLen(entry); |
7a2f978b | 994 | } |
995 | } | |
996 | comm_write(fd, buf, writelen, clientWriteComplete, http, freefunc); | |
997 | } | |
998 | ||
fc5d6f7f | 999 | static void |
79a15e0a | 1000 | clientWriteComplete(int fd, char *bufnotused, size_t size, int errflag, void *data) |
7a2f978b | 1001 | { |
1002 | clientHttpRequest *http = data; | |
1003 | ConnStateData *conn; | |
1004 | StoreEntry *entry = http->entry; | |
b34ed725 | 1005 | int done; |
7a2f978b | 1006 | http->out.size += size; |
93f9abd0 | 1007 | debug(33, 5) ("clientWriteComplete: FD %d, sz %d, err %d, off %d, len %d\n", |
07304bf9 | 1008 | fd, size, errflag, http->out.offset, objectLen(entry)); |
7a2f978b | 1009 | if (errflag) { |
1010 | CheckQuickAbort(http); | |
7a2f978b | 1011 | comm_close(fd); |
1012 | } else if (entry->store_status == STORE_ABORTED) { | |
7a2f978b | 1013 | comm_close(fd); |
a200bbd2 | 1014 | } else if ((done = clientCheckTransferDone(http)) != 0 || size == 0) { |
93f9abd0 | 1015 | debug(33, 5) ("clientWriteComplete: FD %d transfer is DONE\n", fd); |
7a2f978b | 1016 | /* We're finished case */ |
cb69b4c7 | 1017 | if (httpReplyContentLen(http->entry->mem_obj->reply) < 0 || !done || |
b34ed725 | 1018 | EBIT_TEST(entry->flag, ENTRY_BAD_LENGTH)) { |
1019 | /* | |
1020 | * Client connection closed due to unknown or invalid | |
1021 | * content length. Persistent connection is not possible. | |
1022 | * This catches most cases, but probably not all. | |
1023 | */ | |
7a2f978b | 1024 | comm_close(fd); |
79a15e0a | 1025 | } else if (EBIT_TEST(http->request->flags, REQ_PROXY_KEEPALIVE)) { |
93f9abd0 | 1026 | debug(33, 5) ("clientWriteComplete: FD %d Keeping Alive\n", fd); |
7a2f978b | 1027 | conn = http->conn; |
b34ed725 | 1028 | conn->defer.until = 0; /* Kick it to read a new request */ |
7a2f978b | 1029 | httpRequestFree(http); |
79d39a72 | 1030 | if ((http = conn->chr) != NULL) { |
93f9abd0 | 1031 | debug(33, 1) ("clientWriteComplete: FD %d Sending next request\n", fd); |
6cf028ab | 1032 | if (!storeClientCopyPending(http->entry, http)) { |
0e473d70 | 1033 | if (entry->store_status == STORE_ABORTED) |
6cf028ab | 1034 | debug(33, 0) ("clientWriteComplete: entry->swap_status == STORE_ABORTED\n"); |
8daca701 | 1035 | storeClientCopy(http->entry, |
1036 | http->out.offset, | |
1037 | http->out.offset, | |
1038 | SM_PAGE_SIZE, | |
7021844c | 1039 | memAllocate(MEM_4K_BUF), |
8daca701 | 1040 | clientSendMoreData, |
1041 | http); | |
6cf028ab | 1042 | } |
7a2f978b | 1043 | } else { |
93f9abd0 | 1044 | debug(33, 5) ("clientWriteComplete: FD %d reading next request\n", fd); |
7a2f978b | 1045 | fd_note(fd, "Reading next request"); |
0ca54a51 | 1046 | /* |
1047 | * Set the timeout BEFORE calling clientReadRequest(). | |
1048 | */ | |
7a2f978b | 1049 | commSetTimeout(fd, 15, requestTimeout, conn); |
47130615 | 1050 | clientReadRequest(fd, conn); /* Read next request */ |
0ca54a51 | 1051 | /* |
1052 | * Note, the FD may be closed at this point. | |
1053 | */ | |
7a2f978b | 1054 | } |
1055 | } else { | |
1056 | comm_close(fd); | |
1057 | } | |
1058 | } else { | |
1059 | /* More data will be coming from primary server; register with | |
1060 | * storage manager. */ | |
0e473d70 | 1061 | if (entry->store_status == STORE_ABORTED) |
6cf028ab | 1062 | debug(33, 0) ("clientWriteComplete 2: entry->swap_status == STORE_ABORTED\n"); |
7a2f978b | 1063 | storeClientCopy(entry, |
1064 | http->out.offset, | |
1065 | http->out.offset, | |
1066 | SM_PAGE_SIZE, | |
7021844c | 1067 | memAllocate(MEM_4K_BUF), |
7a2f978b | 1068 | clientSendMoreData, |
1069 | http); | |
1070 | } | |
1071 | } | |
1072 | ||
1073 | static void | |
1b02b5be | 1074 | clientGetHeadersForIMS(void *data, char *buf, ssize_t size) |
7a2f978b | 1075 | { |
1076 | clientHttpRequest *http = data; | |
7a2f978b | 1077 | StoreEntry *entry = http->entry; |
dd83ba69 | 1078 | MemObject *mem; |
93f9abd0 | 1079 | debug(33, 3) ("clientGetHeadersForIMS: %s, %d bytes\n", |
1080 | http->uri, (int) size); | |
7a2f978b | 1081 | assert(size <= SM_PAGE_SIZE); |
3f6c0fb2 | 1082 | memFree(MEM_4K_BUF, buf); |
1b02b5be | 1083 | buf = NULL; |
6cf028ab | 1084 | if (size < 0 || entry->store_status == STORE_ABORTED) { |
8d4f9bc8 | 1085 | /* |
1086 | * There are different reasons why we might have size < 0. One | |
1087 | * being that we failed to open a swapfile. Another being that | |
1088 | * the request was cancelled from the client-side. If the client | |
1089 | * cancelled the request, then http->entry will be NULL. | |
1090 | */ | |
1091 | if (entry != NULL) { | |
1092 | debug(33, 1) ("clientGetHeadersForIMS: storeClientCopy failed for '%s'\n", | |
1093 | storeKeyText(entry->key)); | |
1094 | clientProcessMiss(http); | |
1095 | } | |
7a2f978b | 1096 | return; |
1097 | } | |
dd83ba69 | 1098 | mem = entry->mem_obj; |
cb69b4c7 | 1099 | if (mem->reply->sline.status == 0) { |
7a2f978b | 1100 | if (entry->mem_status == IN_MEMORY) { |
fb63215a | 1101 | clientProcessMiss(http); |
7a2f978b | 1102 | return; |
1103 | } | |
93f9abd0 | 1104 | if (size == SM_PAGE_SIZE && http->out.offset == 0) { |
1105 | /* | |
1106 | * We can't get any more headers than this, so bail | |
1107 | */ | |
1108 | debug(33, 1) ("clientGetHeadersForIMS: failed, forcing cache miss\n"); | |
1109 | clientProcessMiss(http); | |
1110 | return; | |
1111 | } | |
1112 | debug(33, 3) ("clientGetHeadersForIMS: waiting for HTTP reply headers\n"); | |
7a2f978b | 1113 | /* All headers are not yet available, wait for more data */ |
0e473d70 | 1114 | if (entry->store_status == STORE_ABORTED) |
6cf028ab | 1115 | debug(33, 0) ("clientGetHeadersForIMS: entry->swap_status == STORE_ABORTED\n"); |
7a2f978b | 1116 | storeClientCopy(entry, |
1117 | http->out.offset + size, | |
1118 | http->out.offset, | |
1119 | SM_PAGE_SIZE, | |
7021844c | 1120 | memAllocate(MEM_4K_BUF), |
1b02b5be | 1121 | clientGetHeadersForIMS, |
7a2f978b | 1122 | http); |
1123 | return; | |
1124 | } | |
1125 | /* All headers are available, check if object is modified or not */ | |
1126 | /* --------------------------------------------------------------- | |
cb69b4c7 | 1127 | * Removed check for reply->sline.status != 200 because of a potential |
7a2f978b | 1128 | * problem with ICP. We will return a HIT for any public, cached |
1129 | * object. This includes other responses like 301, 410, as coded in | |
1130 | * http.c. It is Bad(tm) to return UDP_HIT and then, if the reply | |
50ddd7a4 | 1131 | * code is not 200, hand off to clientProcessMiss(), which may disallow |
7a2f978b | 1132 | * the request based on 'miss_access' rules. Alternatively, we might |
1133 | * consider requiring returning UDP_HIT only for 200's. This | |
1134 | * problably means an entry->flag bit, which would be lost during | |
1135 | * restart because the flags aren't preserved across restarts. | |
1136 | * --DW 3/11/96. | |
1137 | * ---------------------------------------------------------------- */ | |
1138 | #ifdef CHECK_REPLY_CODE_NOTEQUAL_200 | |
1139 | /* Only objects with statuscode==200 can be "Not modified" */ | |
cb69b4c7 | 1140 | if (mem->reply->sline.status != 200) { |
93f9abd0 | 1141 | debug(33, 4) ("clientGetHeadersForIMS: Reply code %d!=200\n", |
cb69b4c7 | 1142 | mem->reply->sline.status); |
fb63215a | 1143 | clientProcessMiss(http); |
7a2f978b | 1144 | return; |
1145 | } | |
7a2f978b | 1146 | #endif |
1b02b5be | 1147 | http->log_type = LOG_TCP_IMS_HIT; |
7a2f978b | 1148 | entry->refcount++; |
1149 | if (modifiedSince(entry, http->request)) { | |
0e473d70 | 1150 | if (entry->store_status == STORE_ABORTED) |
6cf028ab | 1151 | debug(33, 0) ("clientGetHeadersForIMS 2: entry->swap_status == STORE_ABORTED\n"); |
7a2f978b | 1152 | storeClientCopy(entry, |
1153 | http->out.offset, | |
1154 | http->out.offset, | |
1155 | SM_PAGE_SIZE, | |
7021844c | 1156 | memAllocate(MEM_4K_BUF), |
7a2f978b | 1157 | clientSendMoreData, |
1158 | http); | |
1159 | return; | |
1160 | } | |
93f9abd0 | 1161 | debug(33, 4) ("clientGetHeadersForIMS: Not modified '%s'\n", storeUrl(entry)); |
cb69b4c7 | 1162 | comm_write_mbuf(http->conn->fd, httpPacked304Reply(mem->reply), |
1163 | clientHandleIMSComplete, http); | |
7a2f978b | 1164 | } |
1165 | ||
1166 | static void | |
1b02b5be | 1167 | clientHandleIMSComplete(int fd, char *bufnotused, size_t size, int flag, void *data) |
7a2f978b | 1168 | { |
1169 | clientHttpRequest *http = data; | |
1170 | StoreEntry *entry = http->entry; | |
93f9abd0 | 1171 | debug(33, 5) ("clientHandleIMSComplete: Not Modified sent '%s'\n", storeUrl(entry)); |
7a2f978b | 1172 | /* Set up everything for the logging */ |
1173 | storeUnregister(entry, http); | |
1174 | storeUnlockObject(entry); | |
1175 | http->entry = NULL; | |
1176 | http->out.size += size; | |
1177 | http->al.http.code = 304; | |
79a15e0a | 1178 | if (flag != COMM_ERR_CLOSING) |
7a2f978b | 1179 | comm_close(fd); |
1180 | } | |
1181 | ||
50ddd7a4 | 1182 | static log_type |
1183 | clientProcessRequest2(clientHttpRequest * http) | |
1184 | { | |
1185 | const request_t *r = http->request; | |
23d92c64 | 1186 | const cache_key *key = storeKeyPublic(http->uri, r->method); |
50ddd7a4 | 1187 | StoreEntry *e; |
1188 | if ((e = http->entry = storeGet(key)) == NULL) { | |
1189 | /* this object isn't in the cache */ | |
1190 | return LOG_TCP_MISS; | |
1191 | } else if (EBIT_TEST(e->flag, ENTRY_SPECIAL)) { | |
1192 | if (e->mem_status == IN_MEMORY) | |
1193 | return LOG_TCP_MEM_HIT; | |
1194 | else | |
1195 | return LOG_TCP_HIT; | |
1196 | } else if (!storeEntryValidToSend(e)) { | |
1197 | storeRelease(e); | |
1198 | http->entry = NULL; | |
1199 | return LOG_TCP_MISS; | |
1200 | } else if (EBIT_TEST(r->flags, REQ_NOCACHE)) { | |
1201 | /* NOCACHE should always eject a negative cached object */ | |
1202 | if (EBIT_TEST(e->flag, ENTRY_NEGCACHED)) | |
1203 | storeRelease(e); | |
1204 | /* NOCACHE+IMS should not eject a valid object */ | |
1205 | else if (EBIT_TEST(r->flags, REQ_IMS)) | |
1206 | (void) 0; | |
1207 | /* Request-Range should not eject a valid object */ | |
1208 | else if (EBIT_TEST(r->flags, REQ_RANGE)) | |
1209 | (void) 0; | |
1210 | else | |
1211 | storeRelease(e); | |
1212 | ipcacheReleaseInvalid(r->host); | |
1213 | http->entry = NULL; | |
ee1679df | 1214 | return LOG_TCP_CLIENT_REFRESH_MISS; |
50ddd7a4 | 1215 | } else if (checkNegativeHit(e)) { |
1216 | return LOG_TCP_NEGATIVE_HIT; | |
1217 | } else if (refreshCheck(e, r, 0)) { | |
1218 | /* The object is in the cache, but it needs to be validated. Use | |
1219 | * LOG_TCP_REFRESH_MISS for the time being, maybe change it to | |
1b02b5be | 1220 | * _HIT later in clientHandleIMSReply() */ |
50ddd7a4 | 1221 | if (r->protocol == PROTO_HTTP) |
1222 | return LOG_TCP_REFRESH_MISS; | |
1223 | else | |
1224 | return LOG_TCP_MISS; /* XXX zoinks */ | |
1225 | } else if (EBIT_TEST(r->flags, REQ_IMS)) { | |
1226 | /* User-initiated IMS request for something we think is valid */ | |
1227 | return LOG_TCP_IMS_MISS; | |
1228 | } else if (e->mem_status == IN_MEMORY) { | |
1229 | return LOG_TCP_MEM_HIT; | |
1230 | } else { | |
1231 | return LOG_TCP_HIT; | |
1232 | } | |
1233 | } | |
1234 | ||
4c323c5f | 1235 | static void |
fb63215a | 1236 | clientProcessRequest(clientHttpRequest * http) |
7a2f978b | 1237 | { |
23d92c64 | 1238 | char *url = http->uri; |
7a2f978b | 1239 | StoreEntry *entry = NULL; |
50ddd7a4 | 1240 | request_t *r = http->request; |
fb63215a | 1241 | int fd = http->conn->fd; |
1bea1d83 | 1242 | HttpReply *rep; |
93f9abd0 | 1243 | debug(33, 4) ("clientProcessRequest: %s '%s'\n", |
50ddd7a4 | 1244 | RequestMethodStr[r->method], |
7a2f978b | 1245 | url); |
fb63215a | 1246 | if (r->method == METHOD_CONNECT) { |
7a2f978b | 1247 | http->log_type = LOG_TCP_MISS; |
ea0efb98 | 1248 | sslStart(fd, url, r, &http->out.size); |
1249 | return; | |
fb63215a | 1250 | } else if (r->method == METHOD_PURGE) { |
ea0efb98 | 1251 | clientPurgeRequest(http); |
1252 | return; | |
fb63215a | 1253 | } else if (r->method == METHOD_TRACE) { |
50ddd7a4 | 1254 | if (r->max_forwards == 0) { |
b17b22eb | 1255 | http->entry = clientCreateStoreEntry(http, r->method, 0); |
1256 | storeReleaseRequest(http->entry); | |
1257 | storeBuffer(http->entry); | |
1bea1d83 | 1258 | rep = httpReplyCreate(); |
1259 | httpReplySetHeaders(rep, 1.0, HTTP_OK, NULL, "text/plain", r->headers_sz, 0, squid_curtime); | |
1260 | httpReplySwapOut(rep, http->entry); | |
1261 | httpReplyDestroy(rep); | |
b17b22eb | 1262 | storeAppend(http->entry, r->headers, r->headers_sz); |
1263 | storeComplete(http->entry); | |
7a2f978b | 1264 | return; |
1265 | } | |
1266 | /* yes, continue */ | |
fb63215a | 1267 | } else if (r->protocol != PROTO_HTTP) { |
1268 | (void) 0; /* fallthrough */ | |
54220df8 | 1269 | #if OLD_POST_CODE |
fb63215a | 1270 | } else if (r->method == METHOD_POST) { |
7a2f978b | 1271 | http->log_type = LOG_TCP_MISS; |
ea0efb98 | 1272 | passStart(fd, url, r, &http->out.size); |
1273 | return; | |
54220df8 | 1274 | #else |
1275 | } | |
1276 | if ( r->method == METHOD_PUT || r->method == METHOD_POST ) { | |
fb63215a | 1277 | http->log_type = LOG_TCP_MISS; |
54220df8 | 1278 | pumpInit(fd, r, http->uri); |
1279 | #endif | |
7a2f978b | 1280 | } |
fb63215a | 1281 | http->log_type = clientProcessRequest2(http); |
93f9abd0 | 1282 | debug(33, 4) ("clientProcessRequest: %s for '%s'\n", |
7a2f978b | 1283 | log_tags[http->log_type], |
23d92c64 | 1284 | http->uri); |
50ddd7a4 | 1285 | if ((entry = http->entry) != NULL) { |
7a2f978b | 1286 | storeLockObject(entry); |
23d92c64 | 1287 | storeCreateMemObject(entry, http->uri, http->log_uri); |
7a2f978b | 1288 | storeClientListAdd(entry, http); |
1289 | } | |
7a2f978b | 1290 | http->out.offset = 0; |
1291 | switch (http->log_type) { | |
1292 | case LOG_TCP_HIT: | |
1293 | case LOG_TCP_NEGATIVE_HIT: | |
1294 | case LOG_TCP_MEM_HIT: | |
1295 | entry->refcount++; /* HIT CASE */ | |
0e473d70 | 1296 | if (entry->store_status == STORE_ABORTED) |
6cf028ab | 1297 | debug(33, 0) ("clientProcessRequest: entry->swap_status == STORE_ABORTED\n"); |
7a2f978b | 1298 | storeClientCopy(entry, |
1299 | http->out.offset, | |
1300 | http->out.offset, | |
1301 | SM_PAGE_SIZE, | |
7021844c | 1302 | memAllocate(MEM_4K_BUF), |
7a2f978b | 1303 | clientCacheHit, |
1304 | http); | |
1305 | break; | |
1306 | case LOG_TCP_IMS_MISS: | |
0e473d70 | 1307 | if (entry->store_status == STORE_ABORTED) |
6cf028ab | 1308 | debug(33, 0) ("clientProcessRequest 2: entry->swap_status == STORE_ABORTED\n"); |
7a2f978b | 1309 | storeClientCopy(entry, |
1310 | http->out.offset, | |
1311 | http->out.offset, | |
1312 | SM_PAGE_SIZE, | |
7021844c | 1313 | memAllocate(MEM_4K_BUF), |
1b02b5be | 1314 | clientGetHeadersForIMS, |
7a2f978b | 1315 | http); |
1316 | break; | |
1317 | case LOG_TCP_REFRESH_MISS: | |
fb63215a | 1318 | clientProcessExpired(http); |
7a2f978b | 1319 | break; |
1320 | default: | |
fb63215a | 1321 | clientProcessMiss(http); |
7a2f978b | 1322 | break; |
1323 | } | |
1324 | } | |
1325 | ||
1326 | /* | |
1327 | * Prepare to fetch the object as it's a cache miss of some kind. | |
1328 | */ | |
1329 | static void | |
fb63215a | 1330 | clientProcessMiss(clientHttpRequest * http) |
7a2f978b | 1331 | { |
23d92c64 | 1332 | char *url = http->uri; |
f44af445 | 1333 | request_t *r = http->request; |
1334 | char *request_hdr = r->headers; | |
7a2f978b | 1335 | aclCheck_t ch; |
1336 | int answer; | |
1337 | ErrorState *err = NULL; | |
93f9abd0 | 1338 | debug(33, 4) ("clientProcessMiss: '%s %s'\n", |
f44af445 | 1339 | RequestMethodStr[r->method], url); |
93f9abd0 | 1340 | debug(33, 10) ("clientProcessMiss: request_hdr:\n%s\n", request_hdr); |
79e0dc20 | 1341 | /* |
1342 | * We might have a left-over StoreEntry from a failed cache hit | |
1343 | * or IMS request. | |
1344 | */ | |
1345 | if (http->entry) { | |
1346 | storeUnregister(http->entry, http); | |
1347 | storeUnlockObject(http->entry); | |
1348 | http->entry = NULL; | |
1349 | } | |
1350 | /* | |
1351 | * Check if this host is allowed to fetch MISSES from us (miss_access) | |
1352 | */ | |
7a2f978b | 1353 | memset(&ch, '\0', sizeof(aclCheck_t)); |
1354 | ch.src_addr = http->conn->peer.sin_addr; | |
f44af445 | 1355 | ch.request = r; |
7a2f978b | 1356 | answer = aclCheckFast(Config.accessList.miss, &ch); |
1357 | if (answer == 0) { | |
1358 | http->al.http.code = HTTP_FORBIDDEN; | |
bdb3c273 | 1359 | err = errorCon(ERR_FORWARDING_DENIED, HTTP_FORBIDDEN); |
f44af445 | 1360 | err->request = requestLink(r); |
7a2f978b | 1361 | err->src_addr = http->conn->peer.sin_addr; |
f44af445 | 1362 | http->entry = clientCreateStoreEntry(http, r->method, 0); |
79e0dc20 | 1363 | errorAppendEntry(http->entry, err); |
7a2f978b | 1364 | return; |
1365 | } | |
79e0dc20 | 1366 | assert(http->out.offset == 0); |
f44af445 | 1367 | http->entry = clientCreateStoreEntry(http, r->method, r->flags); |
79e0dc20 | 1368 | http->entry->mem_obj->fd = http->conn->fd; |
1369 | http->entry->refcount++; | |
f44af445 | 1370 | protoDispatch(http->conn->fd, http->entry, r); |
7a2f978b | 1371 | } |
1372 | ||
1373 | /* | |
1374 | * parseHttpRequest() | |
1375 | * | |
1376 | * Returns | |
1377 | * NULL on error or incomplete request | |
1378 | * a clientHttpRequest structure on success | |
1379 | */ | |
1380 | static clientHttpRequest * | |
1381 | parseHttpRequest(ConnStateData * conn, method_t * method_p, int *status, | |
1382 | char **headers_p, size_t * headers_sz_p) | |
1383 | { | |
1384 | char *inbuf = NULL; | |
1385 | char *mstr = NULL; | |
1386 | char *url = NULL; | |
1387 | char *req_hdr = NULL; | |
7a2f978b | 1388 | float http_ver; |
1389 | char *token = NULL; | |
1390 | char *t = NULL; | |
1391 | char *end = NULL; | |
1392 | int free_request = 0; | |
1393 | size_t header_sz; /* size of headers, not including first line */ | |
1394 | size_t req_sz; /* size of whole request */ | |
1395 | size_t url_sz; | |
1396 | method_t method; | |
1397 | clientHttpRequest *http = NULL; | |
1398 | ||
1399 | /* Make sure a complete line has been received */ | |
1400 | if (strchr(conn->in.buf, '\n') == NULL) { | |
93f9abd0 | 1401 | debug(33, 5) ("Incomplete request line, waiting for more data\n"); |
7a2f978b | 1402 | *status = 0; |
1403 | return NULL; | |
1404 | } | |
1405 | /* Use xmalloc/xmemcpy instead of xstrdup because inbuf might | |
1406 | * contain NULL bytes; especially for POST data */ | |
1407 | inbuf = xmalloc(conn->in.offset + 1); | |
1408 | xmemcpy(inbuf, conn->in.buf, conn->in.offset); | |
1409 | *(inbuf + conn->in.offset) = '\0'; | |
1410 | ||
1411 | /* Look for request method */ | |
1412 | if ((mstr = strtok(inbuf, "\t ")) == NULL) { | |
93f9abd0 | 1413 | debug(33, 1) ("parseHttpRequest: Can't get request method\n"); |
3775d53c | 1414 | http = xcalloc(1, sizeof(clientHttpRequest)); |
3f6c0fb2 | 1415 | cbdataAdd(http, MEM_NONE); |
3775d53c | 1416 | http->conn = conn; |
1417 | http->start = current_time; | |
1418 | http->req_sz = conn->in.offset; | |
23d92c64 | 1419 | http->uri = xstrdup("error:invalid-request-method"); |
1420 | http->log_uri = xstrdup("error:invalid-request-method"); | |
3775d53c | 1421 | *headers_sz_p = conn->in.offset; |
1422 | *headers_p = inbuf; | |
1423 | *method_p = METHOD_NONE; | |
7a2f978b | 1424 | *status = -1; |
3775d53c | 1425 | return http; |
7a2f978b | 1426 | } |
1427 | method = urlParseMethod(mstr); | |
1428 | if (method == METHOD_NONE) { | |
93f9abd0 | 1429 | debug(33, 1) ("parseHttpRequest: Unsupported method '%s'\n", mstr); |
3775d53c | 1430 | http = xcalloc(1, sizeof(clientHttpRequest)); |
3f6c0fb2 | 1431 | cbdataAdd(http, MEM_NONE); |
3775d53c | 1432 | http->conn = conn; |
1433 | http->start = current_time; | |
1434 | http->req_sz = conn->in.offset; | |
23d92c64 | 1435 | http->uri = xstrdup("error:unsupported-request-method"); |
1436 | http->log_uri = xstrdup("error:unsupported-request-method"); | |
3775d53c | 1437 | *headers_sz_p = conn->in.offset; |
1438 | *headers_p = inbuf; | |
1439 | *method_p = METHOD_NONE; | |
7a2f978b | 1440 | *status = -1; |
3775d53c | 1441 | return http; |
7a2f978b | 1442 | } |
93f9abd0 | 1443 | debug(33, 5) ("parseHttpRequest: Method is '%s'\n", mstr); |
3775d53c | 1444 | *method_p = method; |
7a2f978b | 1445 | |
1446 | /* look for URL */ | |
1447 | if ((url = strtok(NULL, "\r\n\t ")) == NULL) { | |
93f9abd0 | 1448 | debug(33, 1) ("parseHttpRequest: Missing URL\n"); |
3775d53c | 1449 | http = xcalloc(1, sizeof(clientHttpRequest)); |
3f6c0fb2 | 1450 | cbdataAdd(http, MEM_NONE); |
3775d53c | 1451 | http->conn = conn; |
1452 | http->start = current_time; | |
1453 | http->req_sz = conn->in.offset; | |
23d92c64 | 1454 | http->uri = xstrdup("error:missing-url"); |
1455 | http->log_uri = xstrdup("error:missing-url"); | |
3775d53c | 1456 | *headers_sz_p = conn->in.offset; |
1457 | *headers_p = inbuf; | |
7a2f978b | 1458 | *status = -1; |
3775d53c | 1459 | return http; |
7a2f978b | 1460 | } |
93f9abd0 | 1461 | debug(33, 5) ("parseHttpRequest: Request is '%s'\n", url); |
7a2f978b | 1462 | |
1463 | token = strtok(NULL, null_string); | |
1464 | for (t = token; t && *t && *t != '\n' && *t != '\r'; t++); | |
46c7dbf0 | 1465 | if (t == NULL || *t == '\0' || t == token || strncmp(token, "HTTP/", 5)) { |
93f9abd0 | 1466 | debug(33, 3) ("parseHttpRequest: Missing HTTP identifier\n"); |
3775d53c | 1467 | http = xcalloc(1, sizeof(clientHttpRequest)); |
3f6c0fb2 | 1468 | cbdataAdd(http, MEM_NONE); |
3775d53c | 1469 | http->conn = conn; |
1470 | http->start = current_time; | |
1471 | http->req_sz = conn->in.offset; | |
23d92c64 | 1472 | http->uri = xstrdup("error:missing-http-ident"); |
1473 | http->log_uri = xstrdup("error:missing-http-ident"); | |
3775d53c | 1474 | *headers_sz_p = conn->in.offset; |
1475 | *headers_p = inbuf; | |
7a2f978b | 1476 | *status = -1; |
3775d53c | 1477 | return http; |
7a2f978b | 1478 | } |
84116757 | 1479 | http_ver = (float) atof(token + 5); |
7a2f978b | 1480 | |
1481 | /* Check if headers are received */ | |
1482 | if ((end = mime_headers_end(t)) == NULL) { | |
1483 | xfree(inbuf); | |
1484 | *status = 0; | |
1485 | return NULL; | |
1486 | } | |
7a2f978b | 1487 | req_hdr = t; |
c24fca87 | 1488 | /* |
1489 | * Skip whitespace at the end of the frist line, up to the | |
1490 | * first newline. | |
1491 | */ | |
1492 | while (isspace(*req_hdr)) | |
1493 | if (*(req_hdr++) == '\n') | |
1494 | break; | |
1495 | if (end <= req_hdr) { | |
1496 | /* Invalid request */ | |
93f9abd0 | 1497 | debug(33, 3) ("parseHttpRequest: No request headers?\n"); |
c24fca87 | 1498 | http = xcalloc(1, sizeof(clientHttpRequest)); |
3f6c0fb2 | 1499 | cbdataAdd(http, MEM_NONE); |
c24fca87 | 1500 | http->conn = conn; |
1501 | http->start = current_time; | |
1502 | http->req_sz = conn->in.offset; | |
1503 | http->uri = xstrdup("error:no-request-headers"); | |
1504 | http->log_uri = xstrdup("error:no-request-headers"); | |
1505 | *headers_sz_p = conn->in.offset; | |
1506 | *headers_p = inbuf; | |
1507 | *status = -1; | |
1508 | return http; | |
1509 | } | |
7a2f978b | 1510 | header_sz = end - req_hdr; |
1511 | req_sz = end - inbuf; | |
1512 | ||
1513 | /* Ok, all headers are received */ | |
1514 | http = xcalloc(1, sizeof(clientHttpRequest)); | |
3f6c0fb2 | 1515 | cbdataAdd(http, MEM_NONE); |
7a2f978b | 1516 | http->http_ver = http_ver; |
1517 | http->conn = conn; | |
1518 | http->start = current_time; | |
1519 | http->req_sz = req_sz; | |
1520 | *headers_sz_p = header_sz; | |
1521 | *headers_p = xmalloc(header_sz + 1); | |
1522 | xmemcpy(*headers_p, req_hdr, header_sz); | |
1523 | *(*headers_p + header_sz) = '\0'; | |
1524 | ||
93f9abd0 | 1525 | debug(33, 5) ("parseHttpRequest: Request Header is\n%s\n", *headers_p); |
de336bbe | 1526 | /* temporary kludge to test headers, remove it @?@ @?@ */ |
1527 | { | |
1528 | extern void httpHeaderTestParser(const char *hstr); | |
1529 | httpHeaderTestParser(*headers_p); | |
1530 | } | |
1531 | /* end of kludge */ | |
7a2f978b | 1532 | |
23d92c64 | 1533 | /* Assign http->uri */ |
7a2f978b | 1534 | if ((t = strchr(url, '\n'))) /* remove NL */ |
1535 | *t = '\0'; | |
1536 | if ((t = strchr(url, '\r'))) /* remove CR */ | |
1537 | *t = '\0'; | |
1538 | if ((t = strchr(url, '#'))) /* remove HTML anchors */ | |
1539 | *t = '\0'; | |
1540 | ||
1541 | /* see if we running in Config2.Accel.on, if so got to convert it to URL */ | |
1542 | if (Config2.Accel.on && *url == '/') { | |
1543 | /* prepend the accel prefix */ | |
dbfed404 | 1544 | if (opt_accel_uses_host && (t = mime_get_header(req_hdr, "Host"))) { |
7a2f978b | 1545 | /* If a Host: header was specified, use it to build the URL |
1546 | * instead of the one in the Config file. */ | |
1547 | /* | |
1548 | * XXX Use of the Host: header here opens a potential | |
1549 | * security hole. There are no checks that the Host: value | |
1550 | * corresponds to one of your servers. It might, for example, | |
1551 | * refer to www.playboy.com. The 'dst' and/or 'dst_domain' ACL | |
1552 | * types should be used to prevent httpd-accelerators | |
1553 | * handling requests for non-local servers */ | |
1554 | strtok(t, " :/;@"); | |
12fc602c | 1555 | url_sz = strlen(url) + 32 + Config.appendDomainLen + |
1556 | strlen(t); | |
23d92c64 | 1557 | http->uri = xcalloc(url_sz, 1); |
1558 | snprintf(http->uri, url_sz, "http://%s:%d%s", | |
7a2f978b | 1559 | t, (int) Config.Accel.port, url); |
dbfed404 | 1560 | } else if (vhost_mode) { |
1561 | /* Put the local socket IP address as the hostname */ | |
1562 | url_sz = strlen(url) + 32 + Config.appendDomainLen; | |
1563 | http->uri = xcalloc(url_sz, 1); | |
1564 | snprintf(http->uri, url_sz, "http://%s:%d%s", | |
1565 | inet_ntoa(http->conn->me.sin_addr), | |
1566 | (int) Config.Accel.port, | |
1567 | url); | |
93f9abd0 | 1568 | debug(33, 5) ("VHOST REWRITE: '%s'\n", http->uri); |
7a2f978b | 1569 | } else { |
1570 | url_sz = strlen(Config2.Accel.prefix) + strlen(url) + | |
1571 | Config.appendDomainLen + 1; | |
23d92c64 | 1572 | http->uri = xcalloc(url_sz, 1); |
1573 | snprintf(http->uri, url_sz, "%s%s", Config2.Accel.prefix, url); | |
7a2f978b | 1574 | } |
1575 | http->accel = 1; | |
1576 | } else { | |
1577 | /* URL may be rewritten later, so make extra room */ | |
1578 | url_sz = strlen(url) + Config.appendDomainLen + 5; | |
23d92c64 | 1579 | http->uri = xcalloc(url_sz, 1); |
1580 | strcpy(http->uri, url); | |
7a2f978b | 1581 | http->accel = 0; |
1582 | } | |
23d92c64 | 1583 | http->log_uri = xstrdup(http->uri); |
93f9abd0 | 1584 | debug(33, 5) ("parseHttpRequest: Complete request received\n"); |
7a2f978b | 1585 | if (free_request) |
1586 | safe_free(url); | |
1587 | xfree(inbuf); | |
7a2f978b | 1588 | *status = 1; |
1589 | return http; | |
1590 | } | |
1591 | ||
1592 | static int | |
79d39a72 | 1593 | clientReadDefer(int fdnotused, void *data) |
7a2f978b | 1594 | { |
1595 | ConnStateData *conn = data; | |
1596 | return conn->defer.until > squid_curtime; | |
1597 | } | |
1598 | ||
1599 | static void | |
1600 | clientReadRequest(int fd, void *data) | |
1601 | { | |
1602 | ConnStateData *conn = data; | |
1603 | int parser_return_code = 0; | |
1604 | int k; | |
1605 | request_t *request = NULL; | |
7a2f978b | 1606 | int size; |
7a2f978b | 1607 | method_t method; |
1608 | clientHttpRequest *http = NULL; | |
1609 | clientHttpRequest **H = NULL; | |
1610 | char *headers; | |
1611 | size_t headers_sz; | |
1612 | ErrorState *err = NULL; | |
1613 | fde *F = &fd_table[fd]; | |
44db45e8 | 1614 | int len = conn->in.size - conn->in.offset - 1; |
93f9abd0 | 1615 | debug(33, 4) ("clientReadRequest: FD %d: reading request...\n", fd); |
7a2f978b | 1616 | size = read(fd, conn->in.buf + conn->in.offset, len); |
1617 | fd_bytes(fd, size, FD_READ); | |
44db45e8 | 1618 | /* |
1619 | * Don't reset the timeout value here. The timeout value will be | |
1620 | * set to Config.Timeout.request by httpAccept() and | |
1621 | * clientWriteComplete(), and should apply to the request as a | |
1622 | * whole, not individual read() calls. Plus, it breaks our | |
1623 | * lame half-close detection | |
1624 | */ | |
1625 | commSetSelect(fd, COMM_SELECT_READ, clientReadRequest, conn, 0); | |
7a2f978b | 1626 | if (size == 0) { |
1627 | if (conn->chr == NULL) { | |
1628 | /* no current or pending requests */ | |
1629 | comm_close(fd); | |
1630 | return; | |
1631 | } | |
1632 | /* It might be half-closed, we can't tell */ | |
93f9abd0 | 1633 | debug(33, 5) ("clientReadRequest: FD %d closed?\n", fd); |
79a15e0a | 1634 | EBIT_SET(F->flags, FD_SOCKET_EOF); |
7a2f978b | 1635 | conn->defer.until = squid_curtime + 1; |
1636 | conn->defer.n++; | |
44db45e8 | 1637 | fd_note(fd, "half-closed"); |
7a2f978b | 1638 | return; |
1639 | } else if (size < 0) { | |
6d3caf23 | 1640 | if (!ignoreErrno(errno)) { |
7a2f978b | 1641 | debug(50, 2) ("clientReadRequest: FD %d: %s\n", fd, xstrerror()); |
1642 | comm_close(fd); | |
ebf4efff | 1643 | return; |
47130615 | 1644 | } else if (conn->in.offset == 0) { |
ebf4efff | 1645 | debug(50, 2) ("clientReadRequest: FD %d: no data to process\n"); |
1646 | return; | |
7a2f978b | 1647 | } |
ebf4efff | 1648 | /* Continue to process previously read data */ |
47130615 | 1649 | size = 0; |
7a2f978b | 1650 | } |
1651 | conn->in.offset += size; | |
1652 | conn->in.buf[conn->in.offset] = '\0'; /* Terminate the string */ | |
7a2f978b | 1653 | while (conn->in.offset > 0) { |
ebf4efff | 1654 | int nrequests; |
1655 | /* Limit the number of concurrent requests to 2 */ | |
1656 | for (H = &conn->chr, nrequests = 0; *H; H = &(*H)->next, nrequests++); | |
1657 | if (nrequests >= 2) { | |
93f9abd0 | 1658 | debug(33, 2) ("clientReadRequest: FD %d max concurrent requests reached\n", fd); |
1659 | debug(33, 5) ("clientReadRequest: FD %d defering new request until one is done\n", fd); | |
47130615 | 1660 | conn->defer.until = squid_curtime + 100; /* Reset when a request is complete */ |
ebf4efff | 1661 | break; |
1662 | } | |
1663 | /* Process request */ | |
7a2f978b | 1664 | http = parseHttpRequest(conn, |
1665 | &method, | |
1666 | &parser_return_code, | |
1667 | &headers, | |
1668 | &headers_sz); | |
1669 | if (http) { | |
1670 | assert(http->req_sz > 0); | |
1671 | conn->in.offset -= http->req_sz; | |
1672 | assert(conn->in.offset >= 0); | |
6fa92aa2 | 1673 | /* |
1674 | * If we read past the end of this request, move the remaining | |
1675 | * data to the beginning | |
1676 | */ | |
1677 | if (conn->in.offset > 0) | |
dbfed404 | 1678 | xmemmove(conn->in.buf, conn->in.buf + http->req_sz, conn->in.offset); |
ebf4efff | 1679 | /* add to the client request queue */ |
7a2f978b | 1680 | for (H = &conn->chr; *H; H = &(*H)->next); |
1681 | *H = http; | |
1682 | conn->nrequests++; | |
1683 | commSetTimeout(fd, Config.Timeout.lifetime, NULL, NULL); | |
3775d53c | 1684 | if (parser_return_code < 0) { |
93f9abd0 | 1685 | debug(33, 1) ("clientReadRequest: FD %d Invalid Request\n", fd); |
3775d53c | 1686 | err = errorCon(ERR_INVALID_REQ, HTTP_BAD_REQUEST); |
1687 | err->request_hdrs = xstrdup(conn->in.buf); | |
1688 | http->entry = clientCreateStoreEntry(http, method, 0); | |
1689 | errorAppendEntry(http->entry, err); | |
1690 | break; | |
1691 | } | |
23d92c64 | 1692 | if ((request = urlParse(method, http->uri)) == NULL) { |
93f9abd0 | 1693 | debug(33, 5) ("Invalid URL: %s\n", http->uri); |
7a2f978b | 1694 | err = errorCon(ERR_INVALID_URL, HTTP_BAD_REQUEST); |
1695 | err->src_addr = conn->peer.sin_addr; | |
23d92c64 | 1696 | err->url = xstrdup(http->uri); |
7a2f978b | 1697 | http->al.http.code = err->http_status; |
f44af445 | 1698 | http->entry = clientCreateStoreEntry(http, method, 0); |
79e0dc20 | 1699 | errorAppendEntry(http->entry, err); |
7a2f978b | 1700 | safe_free(headers); |
1701 | break; | |
1702 | } | |
23d92c64 | 1703 | safe_free(http->log_uri); |
1704 | http->log_uri = xstrdup(urlCanonicalClean(request)); | |
7a2f978b | 1705 | request->client_addr = conn->peer.sin_addr; |
1706 | request->http_ver = http->http_ver; | |
1707 | request->headers = headers; | |
1708 | request->headers_sz = headers_sz; | |
1709 | if (!urlCheckRequest(request)) { | |
1710 | err = errorCon(ERR_UNSUP_REQ, HTTP_NOT_IMPLEMENTED); | |
1711 | err->src_addr = conn->peer.sin_addr; | |
7a2f978b | 1712 | err->request = requestLink(request); |
1713 | http->al.http.code = err->http_status; | |
f44af445 | 1714 | http->entry = clientCreateStoreEntry(http, request->method, 0); |
79e0dc20 | 1715 | errorAppendEntry(http->entry, err); |
3775d53c | 1716 | break; |
7a2f978b | 1717 | } |
1718 | http->request = requestLink(request); | |
cf26e54c | 1719 | clientAccessCheck(http); |
3775d53c | 1720 | /* |
1721 | * break here for NON-GET because most likely there is a | |
7a2f978b | 1722 | * reqeust body following and we don't want to parse it |
3775d53c | 1723 | * as though it was new request |
1724 | */ | |
7a2f978b | 1725 | if (request->method != METHOD_GET) { |
1726 | if (conn->in.offset) { | |
1727 | request->body_sz = conn->in.offset; | |
1728 | request->body = xmalloc(request->body_sz); | |
1729 | xmemcpy(request->body, conn->in.buf, request->body_sz); | |
1730 | conn->in.offset = 0; | |
1731 | } | |
1732 | break; | |
1733 | } | |
7a2f978b | 1734 | continue; /* while offset > 0 */ |
1735 | } else if (parser_return_code == 0) { | |
1736 | /* | |
1737 | * Partial request received; reschedule until parseHttpRequest() | |
1738 | * is happy with the input | |
1739 | */ | |
1740 | k = conn->in.size - 1 - conn->in.offset; | |
1741 | if (k == 0) { | |
1742 | if (conn->in.offset >= Config.maxRequestSize) { | |
1743 | /* The request is too large to handle */ | |
93f9abd0 | 1744 | debug(33, 0) ("Request won't fit in buffer.\n"); |
1745 | debug(33, 0) ("Config 'request_size'= %d bytes.\n", | |
7a2f978b | 1746 | Config.maxRequestSize); |
93f9abd0 | 1747 | debug(33, 0) ("This request = %d bytes.\n", |
7a2f978b | 1748 | conn->in.offset); |
1749 | err = errorCon(ERR_INVALID_REQ, HTTP_REQUEST_ENTITY_TOO_LARGE); | |
f44af445 | 1750 | http->entry = clientCreateStoreEntry(http, request->method, 0); |
79e0dc20 | 1751 | errorAppendEntry(http->entry, err); |
7a2f978b | 1752 | return; |
1753 | } | |
1754 | /* Grow the request memory area to accomodate for a large request */ | |
1755 | conn->in.size += REQUEST_BUF_SIZE; | |
1756 | conn->in.buf = xrealloc(conn->in.buf, conn->in.size); | |
59c4d35b | 1757 | /* XXX account conn->in.buf */ |
93f9abd0 | 1758 | debug(33, 2) ("Handling a large request, offset=%d inbufsize=%d\n", |
7a2f978b | 1759 | conn->in.offset, conn->in.size); |
1760 | k = conn->in.size - 1 - conn->in.offset; | |
1761 | } | |
7a2f978b | 1762 | break; |
7a2f978b | 1763 | } |
1764 | } | |
1765 | } | |
1766 | ||
1767 | /* general lifetime handler for HTTP requests */ | |
1768 | static void | |
1769 | requestTimeout(int fd, void *data) | |
1770 | { | |
1771 | ConnStateData *conn = data; | |
1772 | ErrorState *err; | |
93f9abd0 | 1773 | debug(33, 2) ("requestTimeout: FD %d: lifetime is expired.\n", fd); |
7a2f978b | 1774 | if (fd_table[fd].rwstate) { |
79e0dc20 | 1775 | /* |
1776 | * Some data has been sent to the client, just close the FD | |
1777 | */ | |
7a2f978b | 1778 | comm_close(fd); |
1779 | } else if (conn->nrequests) { | |
79e0dc20 | 1780 | /* |
1781 | * assume its a persistent connection; just close it | |
1782 | */ | |
7a2f978b | 1783 | comm_close(fd); |
1784 | } else { | |
79e0dc20 | 1785 | /* |
1786 | * Generate an error | |
1787 | */ | |
7a2f978b | 1788 | err = errorCon(ERR_LIFETIME_EXP, HTTP_REQUEST_TIMEOUT); |
7a2f978b | 1789 | err->url = xstrdup("N/A"); |
79e0dc20 | 1790 | /* |
1791 | * Normally we shouldn't call errorSend() in client_side.c, but | |
1792 | * it should be okay in this case. Presumably if we get here | |
1793 | * this is the first request for the connection, and no data | |
1794 | * has been written yet | |
1795 | */ | |
1796 | assert(conn->chr == NULL); | |
7a2f978b | 1797 | errorSend(fd, err); |
79e0dc20 | 1798 | /* |
1799 | * if we don't close() here, we still need a timeout handler! | |
1800 | */ | |
7a2f978b | 1801 | commSetTimeout(fd, 30, requestTimeout, conn); |
1802 | } | |
1803 | } | |
1804 | ||
1805 | int | |
79d39a72 | 1806 | httpAcceptDefer(int fdnotused, void *notused) |
7a2f978b | 1807 | { |
22f5d1ca | 1808 | return fdNFree() < RESERVED_FD; |
7a2f978b | 1809 | } |
1810 | ||
bf8e5903 | 1811 | /* Handle a new connection on HTTP socket. */ |
7a2f978b | 1812 | void |
1813 | httpAccept(int sock, void *notused) | |
1814 | { | |
1815 | int fd = -1; | |
1816 | ConnStateData *connState = NULL; | |
1817 | struct sockaddr_in peer; | |
1818 | struct sockaddr_in me; | |
1819 | memset(&peer, '\0', sizeof(struct sockaddr_in)); | |
1820 | memset(&me, '\0', sizeof(struct sockaddr_in)); | |
1821 | commSetSelect(sock, COMM_SELECT_READ, httpAccept, NULL, 0); | |
1822 | if ((fd = comm_accept(sock, &peer, &me)) < 0) { | |
1823 | debug(50, 1) ("httpAccept: FD %d: accept failure: %s\n", | |
1824 | sock, xstrerror()); | |
1825 | return; | |
1826 | } | |
93f9abd0 | 1827 | debug(33, 4) ("httpAccept: FD %d: accepted\n", fd); |
7a2f978b | 1828 | connState = xcalloc(1, sizeof(ConnStateData)); |
1829 | connState->peer = peer; | |
1830 | connState->log_addr = peer.sin_addr; | |
1831 | connState->log_addr.s_addr &= Config.Addrs.client_netmask.s_addr; | |
1832 | connState->me = me; | |
1833 | connState->fd = fd; | |
1834 | connState->ident.fd = -1; | |
1835 | connState->in.size = REQUEST_BUF_SIZE; | |
1836 | connState->in.buf = xcalloc(connState->in.size, 1); | |
3f6c0fb2 | 1837 | cbdataAdd(connState, MEM_NONE); |
59c4d35b | 1838 | /* XXX account connState->in.buf */ |
7a2f978b | 1839 | comm_add_close_handler(fd, connStateFree, connState); |
1840 | if (Config.onoff.log_fqdn) | |
1841 | fqdncache_gethostbyaddr(peer.sin_addr, FQDN_LOOKUP_IF_MISS); | |
1842 | commSetTimeout(fd, Config.Timeout.request, requestTimeout, connState); | |
1843 | commSetSelect(fd, COMM_SELECT_READ, clientReadRequest, connState, 0); | |
1844 | commSetDefer(fd, clientReadDefer, connState); | |
1845 | } | |
1846 | ||
1847 | void | |
1848 | AppendUdp(icpUdpData * item) | |
1849 | { | |
1850 | item->next = NULL; | |
1851 | if (UdpQueueHead == NULL) { | |
1852 | UdpQueueHead = item; | |
1853 | UdpQueueTail = item; | |
1854 | } else if (UdpQueueTail == UdpQueueHead) { | |
1855 | UdpQueueTail = item; | |
1856 | UdpQueueHead->next = item; | |
1857 | } else { | |
1858 | UdpQueueTail->next = item; | |
1859 | UdpQueueTail = item; | |
1860 | } | |
1861 | } | |
1862 | ||
1863 | /* return 1 if the request should be aborted */ | |
1864 | static int | |
1865 | CheckQuickAbort2(const clientHttpRequest * http) | |
1866 | { | |
1867 | long curlen; | |
1868 | long minlen; | |
1869 | long expectlen; | |
1870 | ||
79a15e0a | 1871 | if (!EBIT_TEST(http->request->flags, REQ_CACHABLE)) |
7a2f978b | 1872 | return 1; |
79a15e0a | 1873 | if (EBIT_TEST(http->entry->flag, KEY_PRIVATE)) |
7a2f978b | 1874 | return 1; |
1875 | if (http->entry->mem_obj == NULL) | |
1876 | return 1; | |
cb69b4c7 | 1877 | expectlen = httpReplyContentLen(http->entry->mem_obj->reply); |
7a2f978b | 1878 | curlen = http->entry->mem_obj->inmem_hi; |
1879 | minlen = Config.quickAbort.min; | |
1880 | if (minlen < 0) | |
1881 | /* disabled */ | |
1882 | return 0; | |
1883 | if (curlen > expectlen) | |
1884 | /* bad content length */ | |
1885 | return 1; | |
1886 | if ((expectlen - curlen) < minlen) | |
1887 | /* only little more left */ | |
1888 | return 0; | |
1889 | if ((expectlen - curlen) > Config.quickAbort.max) | |
1890 | /* too much left to go */ | |
1891 | return 1; | |
1892 | if ((curlen / (expectlen / 128U)) > Config.quickAbort.pct) | |
1893 | /* past point of no return */ | |
1894 | return 0; | |
1895 | return 1; | |
1896 | } | |
1897 | ||
1898 | ||
1899 | static void | |
1900 | CheckQuickAbort(clientHttpRequest * http) | |
1901 | { | |
1902 | StoreEntry *entry = http->entry; | |
1903 | /* Note, set entry here because http->entry might get changed (for IMS | |
1904 | * requests) during the storeAbort() call */ | |
1905 | if (entry == NULL) | |
1906 | return; | |
1907 | if (storePendingNClients(entry) > 1) | |
1908 | return; | |
1909 | if (entry->store_status != STORE_PENDING) | |
1910 | return; | |
1911 | if (CheckQuickAbort2(http) == 0) | |
1912 | return; | |
93f9abd0 | 1913 | debug(33, 3) ("CheckQuickAbort: ABORTING %s\n", storeUrl(entry)); |
7a2f978b | 1914 | storeAbort(entry, 1); |
1915 | } | |
1916 | ||
978e455f | 1917 | #define SENDING_BODY 0 |
1918 | #define SENDING_HDRSONLY 1 | |
7a2f978b | 1919 | static int |
1b02b5be | 1920 | clientCheckTransferDone(clientHttpRequest * http) |
7a2f978b | 1921 | { |
978e455f | 1922 | int sending = SENDING_BODY; |
7a2f978b | 1923 | StoreEntry *entry = http->entry; |
978e455f | 1924 | MemObject *mem; |
1925 | http_reply *reply; | |
1926 | int sendlen; | |
cb69b4c7 | 1927 | int clen; |
7a2f978b | 1928 | if (entry == NULL) |
1929 | return 0; | |
978e455f | 1930 | /* |
1931 | * Handle STORE_OK and STORE_ABORTED objects. | |
07304bf9 | 1932 | * objectLen(entry) will be set proprely. |
978e455f | 1933 | */ |
1934 | if (entry->store_status != STORE_PENDING) { | |
07304bf9 | 1935 | if (http->out.offset >= objectLen(entry)) |
7a2f978b | 1936 | return 1; |
513f05a6 | 1937 | else |
1938 | return 0; | |
1939 | } | |
978e455f | 1940 | /* |
1941 | * Now, handle STORE_PENDING objects | |
1942 | */ | |
1943 | mem = entry->mem_obj; | |
1944 | assert(mem != NULL); | |
1945 | assert(http->request != NULL); | |
1946 | reply = mem->reply; | |
1947 | if (reply->hdr_sz == 0) | |
b34ed725 | 1948 | return 0; /* haven't found end of headers yet */ |
cb69b4c7 | 1949 | else if (reply->sline.status == HTTP_OK) |
b34ed725 | 1950 | sending = SENDING_BODY; |
cb69b4c7 | 1951 | else if (reply->sline.status == HTTP_NO_CONTENT) |
b34ed725 | 1952 | sending = SENDING_HDRSONLY; |
cb69b4c7 | 1953 | else if (reply->sline.status == HTTP_NOT_MODIFIED) |
b34ed725 | 1954 | sending = SENDING_HDRSONLY; |
cb69b4c7 | 1955 | else if (reply->sline.status < HTTP_OK) |
a3c60429 | 1956 | sending = SENDING_HDRSONLY; |
978e455f | 1957 | else if (http->request->method == METHOD_HEAD) |
b34ed725 | 1958 | sending = SENDING_HDRSONLY; |
978e455f | 1959 | else |
1960 | sending = SENDING_BODY; | |
1961 | /* | |
1962 | * Figure out how much data we are supposed to send. | |
1963 | * If we are sending a body and we don't have a content-length, | |
1964 | * then we must wait for the object to become STORE_OK or | |
1965 | * STORE_ABORTED. | |
1966 | */ | |
cb69b4c7 | 1967 | clen = httpReplyContentLen(reply); |
978e455f | 1968 | if (sending == SENDING_HDRSONLY) |
1969 | sendlen = reply->hdr_sz; | |
cb69b4c7 | 1970 | else if (clen < 0) |
978e455f | 1971 | return 0; |
1972 | else | |
cb69b4c7 | 1973 | sendlen = clen + reply->hdr_sz; |
978e455f | 1974 | /* |
1975 | * Now that we have the expected length, did we send it all? | |
1976 | */ | |
1977 | if (http->out.offset < sendlen) | |
1978 | return 0; | |
1979 | else | |
b34ed725 | 1980 | return 1; |
7a2f978b | 1981 | } |
1982 | ||
7a2f978b | 1983 | /* |
1984 | * This function is designed to serve a fairly specific purpose. | |
1985 | * Occasionally our vBNS-connected caches can talk to each other, but not | |
1986 | * the rest of the world. Here we try to detect frequent failures which | |
1987 | * make the cache unusable (e.g. DNS lookup and connect() failures). If | |
1988 | * the failure:success ratio goes above 1.0 then we go into "hit only" | |
1989 | * mode where we only return UDP_HIT or UDP_MISS_NOFETCH. Neighbors | |
1990 | * will only fetch HITs from us if they are using the ICP protocol. We | |
1991 | * stay in this mode for 5 minutes. | |
1992 | * | |
1993 | * Duane W., Sept 16, 1996 | |
1994 | */ | |
1995 | ||
1996 | static void | |
88aad2e5 | 1997 | checkFailureRatio(err_type etype, hier_code hcode) |
7a2f978b | 1998 | { |
88aad2e5 | 1999 | static double magic_factor = 100.0; |
7a2f978b | 2000 | double n_good; |
2001 | double n_bad; | |
2002 | if (hcode == HIER_NONE) | |
2003 | return; | |
88aad2e5 | 2004 | n_good = magic_factor / (1.0 + request_failure_ratio); |
7a2f978b | 2005 | n_bad = magic_factor - n_good; |
88aad2e5 | 2006 | switch (etype) { |
7a2f978b | 2007 | case ERR_DNS_FAIL: |
2008 | case ERR_CONNECT_FAIL: | |
2009 | case ERR_READ_ERROR: | |
2010 | n_bad++; | |
2011 | break; | |
2012 | default: | |
2013 | n_good++; | |
2014 | } | |
88aad2e5 | 2015 | request_failure_ratio = n_bad / n_good; |
7a2f978b | 2016 | if (hit_only_mode_until > squid_curtime) |
2017 | return; | |
88aad2e5 | 2018 | if (request_failure_ratio < 1.0) |
7a2f978b | 2019 | return; |
93f9abd0 | 2020 | debug(33, 0) ("Failure Ratio at %4.2f\n", request_failure_ratio); |
2021 | debug(33, 0) ("Going into hit-only-mode for %d minutes...\n", | |
7a2f978b | 2022 | FAILURE_MODE_TIME / 60); |
2023 | hit_only_mode_until = squid_curtime + FAILURE_MODE_TIME; | |
88aad2e5 | 2024 | request_failure_ratio = 0.8; /* reset to something less than 1.0 */ |
7a2f978b | 2025 | } |
15df8349 | 2026 | |
2027 | void | |
2028 | clientHttpConnectionsOpen(void) | |
2029 | { | |
2030 | ushortlist *u; | |
2031 | int fd; | |
15df8349 | 2032 | for (u = Config.Port.http; u; u = u->next) { |
8daca701 | 2033 | enter_suid(); |
2034 | fd = comm_open(SOCK_STREAM, | |
2035 | 0, | |
2036 | Config.Addrs.tcp_incoming, | |
2037 | u->i, | |
2038 | COMM_NONBLOCKING, | |
2039 | "HTTP Socket"); | |
2040 | leave_suid(); | |
2041 | if (fd < 0) | |
2042 | continue; | |
2043 | comm_listen(fd); | |
2044 | commSetSelect(fd, COMM_SELECT_READ, httpAccept, NULL, 0); | |
2045 | commSetDefer(fd, httpAcceptDefer, NULL); | |
2046 | debug(1, 1) ("Accepting HTTP connections on port %d, FD %d.\n", | |
2047 | (int) u->i, fd); | |
2048 | HttpSockets[NHttpSockets++] = fd; | |
15df8349 | 2049 | } |
2050 | if (NHttpSockets < 1) | |
8daca701 | 2051 | fatal("Cannot open HTTP Port"); |
15df8349 | 2052 | } |
c0fbae16 | 2053 | |
ab013258 | 2054 | int |
2055 | handleConnectionHeader(int flag, char *where, char *what) | |
2056 | { | |
2057 | char *t, *p, *wh; | |
2058 | int i; | |
2059 | LOCAL_ARRAY(char, mbuf, 256); | |
2060 | ||
2061 | if (flag) { /* lookup mode */ | |
2062 | if (where[0] == '\0' || what[0] == '\0') | |
2063 | return 0; | |
2064 | p = xstrdup(what); | |
2065 | t = strtok(p, ":"); | |
2066 | if (t == NULL) | |
2067 | return 0; | |
2068 | debug(20, 3) ("handleConnectionHeader: %s\n AND %s (%p)\n", where, t, p); | |
2069 | i = strstr(where, t) ? 1 : 0; | |
2070 | xfree(p); | |
2071 | return (i); | |
2072 | } | |
2073 | where[0] = '\0'; | |
2074 | wh = xstrdup(what); | |
2075 | t = strtok(wh, ","); | |
2076 | while (t != NULL) { | |
2077 | ||
2078 | #ifdef BE_PARANOID | |
2079 | static char no_conn[] = "Expires:Host:Content-length:Content-type:"; | |
2080 | ||
2081 | if (handleConnectionHeader(1, no_conn, t)) { | |
2082 | debug(1, 1) ("handleConnectionHeader: problematic header %s\n", t); | |
2083 | t = strtok(NULL, ",\n"); | |
2084 | continue; | |
2085 | } | |
2086 | #endif | |
2087 | if ((p = strchr(t, ':'))) | |
2088 | xstrncpy(mbuf, t, p - t + 1); | |
2089 | else | |
2090 | snprintf(mbuf, 256, "%s:", t); | |
2091 | strcat(where, mbuf); | |
2092 | t = strtok(NULL, ",\n"); | |
2093 | } | |
2094 | debug(20, 3) ("handleConnectionHeader: we have %s\n", where); | |
2095 | xfree(wh); | |
2096 | return 1; | |
2097 | } | |
2098 | ||
c0fbae16 | 2099 | void |
2100 | clientHttpConnectionsClose(void) | |
2101 | { | |
2102 | int i; | |
2103 | for (i = 0; i < NHttpSockets; i++) { | |
2104 | if (HttpSockets[i] >= 0) { | |
2105 | debug(1, 1) ("FD %d Closing HTTP connection\n", HttpSockets[i]); | |
2106 | comm_close(HttpSockets[i]); | |
2107 | HttpSockets[i] = -1; | |
2108 | } | |
2109 | } | |
2110 | NHttpSockets = 0; | |
2111 | } |