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3c66d057 | 1 | |
dd11e0b7 | 2 | /* |
a7c05555 | 3 | * $Id: client_side.cc,v 1.199 1998/01/31 05:31:54 wessels Exp $ |
dd11e0b7 | 4 | * |
5 | * DEBUG: section 33 Client-side Routines | |
6 | * AUTHOR: Duane Wessels | |
7 | * | |
42c04c16 | 8 | * SQUID Internet Object Cache http://squid.nlanr.net/Squid/ |
dd11e0b7 | 9 | * -------------------------------------------------------- |
10 | * | |
11 | * Squid is the result of efforts by numerous individuals from the | |
12 | * Internet community. Development is led by Duane Wessels of the | |
13 | * National Laboratory for Applied Network Research and funded by | |
14 | * the National Science Foundation. | |
15 | * | |
16 | * This program is free software; you can redistribute it and/or modify | |
17 | * it under the terms of the GNU General Public License as published by | |
18 | * the Free Software Foundation; either version 2 of the License, or | |
19 | * (at your option) any later version. | |
20 | * | |
21 | * This program is distributed in the hope that it will be useful, | |
22 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
23 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
24 | * GNU General Public License for more details. | |
25 | * | |
26 | * You should have received a copy of the GNU General Public License | |
27 | * along with this program; if not, write to the Free Software | |
28 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
29 | * | |
30 | */ | |
f88bb09c | 31 | |
32 | #include "squid.h" | |
33 | ||
7a2f978b | 34 | static const char *const crlf = "\r\n"; |
fc5d6f7f | 35 | static const char *const proxy_auth_line = |
36 | "Proxy-Authenticate: Basic realm=\"Squid proxy-caching web server\"\r\n"; | |
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; |
49 | static char *clientConstruct304reply(struct _http_reply *); | |
7a2f978b | 50 | static int CheckQuickAbort2(const clientHttpRequest *); |
1b02b5be | 51 | static int clientCheckTransferDone(clientHttpRequest *); |
7a2f978b | 52 | static void CheckQuickAbort(clientHttpRequest *); |
88aad2e5 | 53 | static void checkFailureRatio(err_type, hier_code); |
fb63215a | 54 | static void clientProcessMiss(clientHttpRequest *); |
7a2f978b | 55 | static void clientAppendReplyHeader(char *, const char *, size_t *, size_t); |
56 | size_t clientBuildReplyHeader(clientHttpRequest *, char *, size_t *, char *, size_t); | |
57 | static clientHttpRequest *parseHttpRequest(ConnStateData *, method_t *, int *, char **, size_t *); | |
582b6456 | 58 | static RH clientRedirectDone; |
1b02b5be | 59 | static STCB clientHandleIMSReply; |
f5b8bbc4 | 60 | static int clientGetsOldEntry(StoreEntry * new, StoreEntry * old, request_t * request); |
61 | static int checkAccelOnly(clientHttpRequest *); | |
7a2f978b | 62 | static STCB clientSendMoreData; |
63 | static STCB clientCacheHit; | |
50ddd7a4 | 64 | static void clientParseRequestHeaders(clientHttpRequest *); |
fb63215a | 65 | static void clientProcessRequest(clientHttpRequest *); |
66 | static void clientProcessExpired(void *data); | |
fc5d6f7f | 67 | static char *clientConstructProxyAuthReply(clientHttpRequest * http); |
50ddd7a4 | 68 | static int clientCachable(clientHttpRequest * http); |
69 | static int clientHierarchical(clientHttpRequest * http); | |
a7c05555 | 70 | static int isTcpHit(log_type code); |
ea6f43cd | 71 | |
38d7734b | 72 | static int |
382d851a | 73 | checkAccelOnly(clientHttpRequest * http) |
38d7734b | 74 | { |
75 | /* return TRUE if someone makes a proxy request to us and | |
76 | * we are in httpd-accel only mode */ | |
f1dc9b30 | 77 | if (!Config2.Accel.on) |
38d7734b | 78 | return 0; |
17a0a4ee | 79 | if (Config.onoff.accel_with_proxy) |
38d7734b | 80 | return 0; |
382d851a | 81 | if (http->request->protocol == PROTO_CACHEOBJ) |
38d7734b | 82 | return 0; |
382d851a | 83 | if (http->accel) |
38d7734b | 84 | return 0; |
85 | return 1; | |
86 | } | |
87 | ||
b8d8561b | 88 | void |
382d851a | 89 | clientAccessCheck(void *data) |
f88bb09c | 90 | { |
382d851a | 91 | clientHttpRequest *http = data; |
92 | ConnStateData *conn = http->conn; | |
75e88d56 | 93 | char *browser; |
17a0a4ee | 94 | if (Config.onoff.ident_lookup && conn->ident.state == IDENT_NONE) { |
382d851a | 95 | identStart(-1, conn, clientAccessCheck); |
ba1d2afa | 96 | return; |
97 | } | |
382d851a | 98 | if (checkAccelOnly(http)) { |
99 | clientAccessCheckDone(0, http); | |
75e88d56 | 100 | return; |
f88bb09c | 101 | } |
f182d1c5 | 102 | browser = mime_get_header(http->request->headers, "User-Agent"); |
f1dc9b30 | 103 | http->acl_checklist = aclChecklistCreate(Config.accessList.http, |
382d851a | 104 | http->request, |
105 | conn->peer.sin_addr, | |
75e88d56 | 106 | browser, |
382d851a | 107 | conn->ident.ident); |
108 | aclNBCheck(http->acl_checklist, clientAccessCheckDone, http); | |
f88bb09c | 109 | } |
110 | ||
fc5d6f7f | 111 | static char * |
112 | clientConstructProxyAuthReply(clientHttpRequest * http) | |
113 | { | |
114 | LOCAL_ARRAY(char, buf, 8192); | |
115 | LOCAL_ARRAY(char, content, 4096); | |
116 | char *hdr; | |
117 | memset(buf, '\0', 8192); | |
118 | memset(content, '\0', 4096); | |
119 | snprintf(content, 4096, | |
120 | "<TITLE>Cache Access Denied</TITLE>\n" | |
121 | "<H2>Cache Access Denied</H2>\n" | |
122 | "<P>\n" | |
123 | "Sorry, you are not currently allowed to request:\n" | |
124 | "<PRE> %s</PRE>\n" | |
125 | "from this cache until you have authenticated yourself.\n" | |
126 | "\n<p>" | |
127 | "You need to use Netscape version 2.0 or greater, or Microsoft\n" | |
128 | "Internet Explorer 3.0 or an HTTP/1.1 compliant browser for this\n" | |
129 | "to work. Please contact the <a href=\"mailto:%s\">cache\n" | |
130 | "administrator</a> if you have difficulties authenticating\n" | |
131 | "yourself, or\n" | |
132 | "<a href=\"http://%s/cgi-bin/chpasswd.cgi\">change</a> your\n" | |
133 | "default password.\n" | |
134 | "<P>\n" | |
135 | "%s\n" | |
136 | "<HR>\n" | |
137 | "<ADDRESS>\n" | |
138 | "Generated by %s/%s@%s\n" | |
139 | "</ADDRESS>\n", | |
23d92c64 | 140 | http->uri, |
fc5d6f7f | 141 | Config.adminEmail, |
142 | getMyHostname(), | |
143 | Config.errHtmlText, | |
144 | appname, | |
145 | version_string, | |
146 | getMyHostname()); | |
147 | hdr = httpReplyHeader(1.0, | |
148 | HTTP_PROXY_AUTHENTICATION_REQUIRED, | |
149 | "text/html", | |
150 | strlen(content), | |
9daad6f0 | 151 | 0, |
fc5d6f7f | 152 | squid_curtime); |
153 | snprintf(buf, 8192, "%s%s\r\n%s", | |
154 | hdr, | |
155 | proxy_auth_line, | |
156 | content); | |
157 | return buf; | |
158 | } | |
159 | ||
23d92c64 | 160 | StoreEntry * |
f44af445 | 161 | clientCreateStoreEntry(clientHttpRequest * h, method_t m, int flags) |
79e0dc20 | 162 | { |
163 | StoreEntry *e; | |
40defb17 | 164 | request_t *r; |
165 | /* | |
166 | * For erroneous requests, we might not have a h->request, | |
167 | * so make a fake one. | |
168 | */ | |
169 | if (h->request == NULL) { | |
3f6c0fb2 | 170 | r = memAllocate(MEM_REQUEST_T, 1); |
40defb17 | 171 | r->method = m; |
172 | r->protocol = PROTO_NONE; | |
173 | h->request = requestLink(r); | |
174 | } | |
23d92c64 | 175 | e = storeCreateEntry(h->uri, h->log_uri, flags, m); |
79e0dc20 | 176 | storeClientListAdd(e, h); |
3f6c0fb2 | 177 | storeClientCopy(e, 0, 0, 4096, memAllocate(MEM_4K_BUF, 1), clientSendMoreData, h); |
79e0dc20 | 178 | return e; |
179 | } | |
180 | ||
181 | ||
b8d8561b | 182 | void |
75e88d56 | 183 | clientAccessCheckDone(int answer, void *data) |
f88bb09c | 184 | { |
382d851a | 185 | clientHttpRequest *http = data; |
e92d33a5 | 186 | char *redirectUrl = NULL; |
fc5d6f7f | 187 | char *buf; |
9b312a19 | 188 | ErrorState *err = NULL; |
23d92c64 | 189 | debug(33, 5) ("clientAccessCheckDone: '%s' answer=%d\n", http->uri, answer); |
382d851a | 190 | http->acl_checklist = NULL; |
fc5d6f7f | 191 | if (answer == ACCESS_ALLOWED) { |
23d92c64 | 192 | urlCanonical(http->request, http->uri); |
ce66013b | 193 | assert(http->redirect_state == REDIRECT_NONE); |
382d851a | 194 | http->redirect_state = REDIRECT_PENDING; |
195 | redirectStart(http, clientRedirectDone, http); | |
fc5d6f7f | 196 | } else if (answer == ACCESS_REQ_PROXY_AUTH) { |
197 | http->al.http.code = HTTP_PROXY_AUTHENTICATION_REQUIRED; | |
198 | http->log_type = LOG_TCP_DENIED; | |
199 | buf = clientConstructProxyAuthReply(http); | |
f44af445 | 200 | http->entry = clientCreateStoreEntry(http, http->request->method, 0); |
79e0dc20 | 201 | storeAppend(http->entry, buf, strlen(buf)); |
f88bb09c | 202 | } else { |
23d92c64 | 203 | debug(33, 5) ("Access Denied: %s\n", http->uri); |
79a15e0a | 204 | http->log_type = LOG_TCP_DENIED; |
f44af445 | 205 | http->entry = clientCreateStoreEntry(http, http->request->method, 0); |
85034133 | 206 | redirectUrl = aclGetDenyInfoUrl(&Config.denyInfoList, AclMatchedName); |
e92d33a5 | 207 | if (redirectUrl) { |
fe40a877 | 208 | err = errorCon(ERR_ACCESS_DENIED, HTTP_MOVED_TEMPORARILY); |
209 | err->request = requestLink(http->request); | |
210 | err->src_addr = http->conn->peer.sin_addr; | |
9b312a19 | 211 | err->redirect_url = xstrdup(redirectUrl); |
79e0dc20 | 212 | errorAppendEntry(http->entry, err); |
e92d33a5 | 213 | } else { |
d2989683 | 214 | /* NOTE: don't use HTTP_UNAUTHORIZED because then the |
437e2060 | 215 | * stupid browser wants us to authenticate */ |
fe40a877 | 216 | err = errorCon(ERR_ACCESS_DENIED, HTTP_FORBIDDEN); |
217 | err->request = requestLink(http->request); | |
218 | err->src_addr = http->conn->peer.sin_addr; | |
79e0dc20 | 219 | errorAppendEntry(http->entry, err); |
e92d33a5 | 220 | } |
f88bb09c | 221 | } |
222 | } | |
223 | ||
b8d8561b | 224 | static void |
225 | clientRedirectDone(void *data, char *result) | |
f88bb09c | 226 | { |
382d851a | 227 | clientHttpRequest *http = data; |
88738790 | 228 | size_t l; |
c0cdaf99 | 229 | request_t *new_request = NULL; |
382d851a | 230 | request_t *old_request = http->request; |
23d92c64 | 231 | debug(33, 5) ("clientRedirectDone: '%s' result=%s\n", http->uri, |
f88bb09c | 232 | result ? result : "NULL"); |
ce66013b | 233 | assert(http->redirect_state == REDIRECT_PENDING); |
382d851a | 234 | http->redirect_state = REDIRECT_DONE; |
c0cdaf99 | 235 | if (result) |
20cc1450 | 236 | new_request = urlParse(old_request->method, result); |
c0cdaf99 | 237 | if (new_request) { |
23d92c64 | 238 | safe_free(http->uri); |
88738790 | 239 | /* need to malloc because the URL returned by the redirector might |
240 | * not be big enough to append the local domain | |
241 | * -- David Lamkin drl@net-tel.co.uk */ | |
242 | l = strlen(result) + Config.appendDomainLen + 5; | |
23d92c64 | 243 | http->uri = xcalloc(l, 1); |
244 | xstrncpy(http->uri, result, l); | |
20cc1450 | 245 | new_request->http_ver = old_request->http_ver; |
16b9d3df | 246 | new_request->headers = xstrdup(old_request->headers); |
2357f74a | 247 | new_request->headers_sz = old_request->headers_sz; |
20cc1450 | 248 | requestUnlink(old_request); |
382d851a | 249 | http->request = requestLink(new_request); |
23d92c64 | 250 | urlCanonical(http->request, http->uri); |
f88bb09c | 251 | } |
50ddd7a4 | 252 | clientParseRequestHeaders(http); |
23d92c64 | 253 | fd_note(http->conn->fd, http->uri); |
fb63215a | 254 | clientProcessRequest(http); |
e81957b7 | 255 | } |
256 | ||
fb63215a | 257 | static void |
258 | clientProcessExpired(void *data) | |
620da955 | 259 | { |
382d851a | 260 | clientHttpRequest *http = data; |
23d92c64 | 261 | char *url = http->uri; |
620da955 | 262 | StoreEntry *entry = NULL; |
23d92c64 | 263 | debug(33, 3) ("clientProcessExpired: '%s'\n", http->uri); |
79a15e0a | 264 | EBIT_SET(http->request->flags, REQ_REFRESH); |
382d851a | 265 | http->old_entry = http->entry; |
620da955 | 266 | entry = storeCreateEntry(url, |
23d92c64 | 267 | http->log_uri, |
382d851a | 268 | http->request->flags, |
269 | http->request->method); | |
620da955 | 270 | /* NOTE, don't call storeLockObject(), storeCreateEntry() does it */ |
fe96bbe6 | 271 | storeClientListAdd(entry, http); |
272 | storeClientListAdd(http->old_entry, http); | |
382d851a | 273 | entry->lastmod = http->old_entry->lastmod; |
50ddd7a4 | 274 | debug(33, 5) ("clientProcessExpired: setting lmt = %d\n", |
620da955 | 275 | entry->lastmod); |
d1a43e28 | 276 | entry->refcount++; /* EXPIRED CASE */ |
382d851a | 277 | http->entry = entry; |
278 | http->out.offset = 0; | |
fb63215a | 279 | protoDispatch(http->conn->fd, http->entry, http->request); |
f990cccc | 280 | /* Register with storage manager to receive updates when data comes in. */ |
d89d1fb6 | 281 | storeClientCopy(entry, |
fe96bbe6 | 282 | http->out.offset, |
d89d1fb6 | 283 | http->out.offset, |
284 | 4096, | |
3f6c0fb2 | 285 | memAllocate(MEM_4K_BUF, 1), |
1b02b5be | 286 | clientHandleIMSReply, |
d89d1fb6 | 287 | http); |
620da955 | 288 | } |
289 | ||
91f4d519 | 290 | static int |
291 | clientGetsOldEntry(StoreEntry * new_entry, StoreEntry * old_entry, request_t * request) | |
292 | { | |
293 | /* If the reply is anything but "Not Modified" then | |
294 | * we must forward it to the client */ | |
295 | if (new_entry->mem_obj->reply->code != 304) { | |
a3d5953d | 296 | debug(33, 5) ("clientGetsOldEntry: NO, reply=%d\n", new_entry->mem_obj->reply->code); |
91f4d519 | 297 | return 0; |
298 | } | |
299 | /* If the client did not send IMS in the request, then it | |
300 | * must get the old object, not this "Not Modified" reply */ | |
79a15e0a | 301 | if (!EBIT_TEST(request->flags, REQ_IMS)) { |
a3d5953d | 302 | debug(33, 5) ("clientGetsOldEntry: YES, no client IMS\n"); |
91f4d519 | 303 | return 1; |
304 | } | |
305 | /* If the client IMS time is prior to the entry LASTMOD time we | |
306 | * need to send the old object */ | |
307 | if (modifiedSince(old_entry, request)) { | |
a3d5953d | 308 | debug(33, 5) ("clientGetsOldEntry: YES, modified since %d\n", request->ims); |
91f4d519 | 309 | return 1; |
310 | } | |
a3d5953d | 311 | debug(33, 5) ("clientGetsOldEntry: NO, new one is fine\n"); |
91f4d519 | 312 | return 0; |
313 | } | |
314 | ||
315 | ||
52d4522b | 316 | static void |
1b02b5be | 317 | clientHandleIMSReply(void *data, char *buf, ssize_t size) |
620da955 | 318 | { |
382d851a | 319 | clientHttpRequest *http = data; |
382d851a | 320 | StoreEntry *entry = http->entry; |
620da955 | 321 | MemObject *mem = entry->mem_obj; |
9fb13bb6 | 322 | const char *url = storeUrl(entry); |
e92d33a5 | 323 | int unlink_request = 0; |
76cff1d4 | 324 | StoreEntry *oldentry; |
1b02b5be | 325 | debug(33, 3) ("clientHandleIMSReply: %s\n", url); |
3f6c0fb2 | 326 | memFree(MEM_4K_BUF, buf); |
76a5501f | 327 | buf = NULL; |
620da955 | 328 | /* unregister this handler */ |
070d29eb | 329 | if (size < 0 || entry->store_status == STORE_ABORTED) { |
1b02b5be | 330 | debug(33, 3) ("clientHandleIMSReply: ABORTED '%s'\n", url); |
c54e9052 | 331 | /* We have an existing entry, but failed to validate it */ |
accc6d47 | 332 | /* Its okay to send the old one anyway */ |
333 | http->log_type = LOG_TCP_REFRESH_FAIL_HIT; | |
334 | storeUnregister(entry, http); | |
335 | storeUnlockObject(entry); | |
336 | entry = http->entry = http->old_entry; | |
337 | entry->refcount++; | |
a18b8172 | 338 | } else if (mem->reply->code == 0) { |
1b02b5be | 339 | debug(33, 3) ("clientHandleIMSReply: Incomplete headers for '%s'\n", url); |
d89d1fb6 | 340 | storeClientCopy(entry, |
fe96bbe6 | 341 | http->out.offset + size, |
d89d1fb6 | 342 | http->out.offset, |
343 | 4096, | |
3f6c0fb2 | 344 | memAllocate(MEM_4K_BUF, 1), |
1b02b5be | 345 | clientHandleIMSReply, |
d89d1fb6 | 346 | http); |
52d4522b | 347 | return; |
382d851a | 348 | } else if (clientGetsOldEntry(entry, http->old_entry, http->request)) { |
620da955 | 349 | /* We initiated the IMS request, the client is not expecting |
76cff1d4 | 350 | * 304, so put the good one back. First, make sure the old entry |
351 | * headers have been loaded from disk. */ | |
382d851a | 352 | oldentry = http->old_entry; |
382d851a | 353 | http->log_type = LOG_TCP_REFRESH_HIT; |
d89d1fb6 | 354 | if (oldentry->mem_obj->request == NULL) { |
355 | oldentry->mem_obj->request = requestLink(mem->request); | |
356 | unlink_request = 1; | |
e92d33a5 | 357 | } |
64763c37 | 358 | /* Don't memcpy() the whole reply structure here. For example, |
359 | * www.thegist.com (Netscape/1.13) returns a content-length for | |
360 | * 304's which seems to be the length of the 304 HEADERS!!! and | |
361 | * not the body they refer to. */ | |
362 | storeCopyNotModifiedReplyHeaders(entry->mem_obj, oldentry->mem_obj); | |
d89d1fb6 | 363 | storeTimestampsSet(oldentry); |
382d851a | 364 | storeUnregister(entry, http); |
6d54aea8 | 365 | storeUnlockObject(entry); |
382d851a | 366 | entry = http->entry = oldentry; |
41fad779 | 367 | entry->timestamp = squid_curtime; |
657266fe | 368 | if (unlink_request) { |
e92d33a5 | 369 | requestUnlink(entry->mem_obj->request); |
657266fe | 370 | entry->mem_obj->request = NULL; |
371 | } | |
620da955 | 372 | } else { |
373 | /* the client can handle this reply, whatever it is */ | |
382d851a | 374 | http->log_type = LOG_TCP_REFRESH_MISS; |
d1a43e28 | 375 | if (mem->reply->code == 304) { |
382d851a | 376 | http->old_entry->timestamp = squid_curtime; |
377 | http->old_entry->refcount++; | |
378 | http->log_type = LOG_TCP_REFRESH_HIT; | |
d1a43e28 | 379 | } |
382d851a | 380 | storeUnregister(http->old_entry, http); |
381 | storeUnlockObject(http->old_entry); | |
620da955 | 382 | } |
382d851a | 383 | http->old_entry = NULL; /* done with old_entry */ |
e8479da9 | 384 | /* use clientCacheHit() here as the callback because we might |
6a54c60e | 385 | * be swapping in from disk, and the file might not really be |
386 | * there */ | |
d89d1fb6 | 387 | storeClientCopy(entry, |
fe96bbe6 | 388 | http->out.offset, |
d89d1fb6 | 389 | http->out.offset, |
390 | 4096, | |
3f6c0fb2 | 391 | memAllocate(MEM_4K_BUF, 1), |
e8479da9 | 392 | clientCacheHit, |
d89d1fb6 | 393 | http); |
620da955 | 394 | } |
91f4d519 | 395 | |
396 | int | |
304d07cb | 397 | modifiedSince(StoreEntry * entry, request_t * request) |
91f4d519 | 398 | { |
399 | int object_length; | |
400 | MemObject *mem = entry->mem_obj; | |
9fb13bb6 | 401 | debug(33, 3) ("modifiedSince: '%s'\n", storeUrl(entry)); |
91f4d519 | 402 | if (entry->lastmod < 0) |
403 | return 1; | |
404 | /* Find size of the object */ | |
1790d392 | 405 | if (mem->reply->content_length >= 0) |
91f4d519 | 406 | object_length = mem->reply->content_length; |
407 | else | |
408 | object_length = entry->object_len - mem->reply->hdr_sz; | |
409 | if (entry->lastmod > request->ims) { | |
a3d5953d | 410 | debug(33, 3) ("--> YES: entry newer than client\n"); |
91f4d519 | 411 | return 1; |
412 | } else if (entry->lastmod < request->ims) { | |
a3d5953d | 413 | debug(33, 3) ("--> NO: entry older than client\n"); |
91f4d519 | 414 | return 0; |
415 | } else if (request->imslen < 0) { | |
a3d5953d | 416 | debug(33, 3) ("--> NO: same LMT, no client length\n"); |
91f4d519 | 417 | return 0; |
418 | } else if (request->imslen == object_length) { | |
a3d5953d | 419 | debug(33, 3) ("--> NO: same LMT, same length\n"); |
91f4d519 | 420 | return 0; |
421 | } else { | |
a3d5953d | 422 | debug(33, 3) ("--> YES: same LMT, different length\n"); |
91f4d519 | 423 | return 1; |
424 | } | |
425 | } | |
b3b64e58 | 426 | |
427 | char * | |
382d851a | 428 | clientConstructTraceEcho(clientHttpRequest * http) |
b3b64e58 | 429 | { |
430 | LOCAL_ARRAY(char, line, 256); | |
431 | LOCAL_ARRAY(char, buf, 8192); | |
432 | size_t len; | |
433 | memset(buf, '\0', 8192); | |
042461c3 | 434 | snprintf(buf, 8192, "HTTP/1.0 200 OK\r\n"); |
56878878 | 435 | snprintf(line, 256, "Date: %s\r\n", mkrfc1123(squid_curtime)); |
b3b64e58 | 436 | strcat(buf, line); |
042461c3 | 437 | snprintf(line, 256, "Server: Squid/%s\r\n", SQUID_VERSION); |
b3b64e58 | 438 | strcat(buf, line); |
042461c3 | 439 | snprintf(line, 256, "Content-Type: message/http\r\n"); |
b3b64e58 | 440 | strcat(buf, line); |
441 | strcat(buf, "\r\n"); | |
442 | len = strlen(buf); | |
382d851a | 443 | httpBuildRequestHeader(http->request, |
444 | http->request, | |
b3b64e58 | 445 | NULL, /* entry */ |
b3b64e58 | 446 | NULL, /* in_len */ |
447 | buf + len, | |
448 | 8192 - len, | |
603a02fd | 449 | http->conn->fd, |
450 | 0); /* flags */ | |
382d851a | 451 | http->log_type = LOG_TCP_MISS; |
4869e8a1 | 452 | http->http_code = HTTP_OK; |
b3b64e58 | 453 | return buf; |
454 | } | |
a90eae18 | 455 | |
456 | void | |
382d851a | 457 | clientPurgeRequest(clientHttpRequest * http) |
a90eae18 | 458 | { |
382d851a | 459 | int fd = http->conn->fd; |
9b312a19 | 460 | char *msg; |
a90eae18 | 461 | StoreEntry *entry; |
9b312a19 | 462 | ErrorState *err = NULL; |
9fb13bb6 | 463 | const cache_key *k; |
9b312a19 | 464 | debug(33, 3) ("Config.onoff.enable_purge = %d\n", Config.onoff.enable_purge); |
17a0a4ee | 465 | if (!Config.onoff.enable_purge) { |
79a15e0a | 466 | http->log_type = LOG_TCP_DENIED; |
fe40a877 | 467 | err = errorCon(ERR_ACCESS_DENIED, HTTP_FORBIDDEN); |
9b312a19 | 468 | err->request = requestLink(http->request); |
469 | err->src_addr = http->conn->peer.sin_addr; | |
f44af445 | 470 | http->entry = clientCreateStoreEntry(http, http->request->method, 0); |
79e0dc20 | 471 | errorAppendEntry(http->entry, err); |
a90eae18 | 472 | return; |
473 | } | |
382d851a | 474 | http->log_type = LOG_TCP_MISS; |
23d92c64 | 475 | k = storeKeyPublic(http->uri, METHOD_GET); |
9fb13bb6 | 476 | if ((entry = storeGet(k)) == NULL) { |
9b312a19 | 477 | http->http_code = HTTP_NOT_FOUND; |
a90eae18 | 478 | } else { |
479 | storeRelease(entry); | |
9b312a19 | 480 | http->http_code = HTTP_OK; |
a90eae18 | 481 | } |
9b312a19 | 482 | msg = httpReplyHeader(1.0, http->http_code, NULL, 0, 0, -1); |
483 | if (strlen(msg) < 8190) | |
484 | strcat(msg, "\r\n"); | |
485 | comm_write(fd, xstrdup(msg), strlen(msg), clientWriteComplete, http, xfree); | |
a90eae18 | 486 | } |
e33ba616 | 487 | |
488 | int | |
ea3a2a69 | 489 | checkNegativeHit(StoreEntry * e) |
e33ba616 | 490 | { |
79a15e0a | 491 | if (!EBIT_TEST(e->flag, ENTRY_NEGCACHED)) |
ea3a2a69 | 492 | return 0; |
493 | if (e->expires <= squid_curtime) | |
494 | return 0; | |
495 | if (e->store_status != STORE_OK) | |
496 | return 0; | |
497 | return 1; | |
e33ba616 | 498 | } |
7a2f978b | 499 | |
a7c05555 | 500 | void |
501 | clientUpdateCounters(clientHttpRequest *http) | |
502 | { | |
503 | Counter.client_http.requests++; | |
504 | kb_incr(&Counter.client_http.kbytes_in, http->req_sz); | |
505 | kb_incr(&Counter.client_http.kbytes_out, http->out.size); | |
506 | if (isTcpHit(http->log_type)) { | |
507 | Counter.client_http.hits++; | |
508 | kb_incr(&Counter.client_http.hit_kbytes_out, http->out.size); | |
509 | } | |
510 | if (http->request->err_type != ERR_NONE) | |
511 | Counter.client_http.errors++; | |
512 | } | |
513 | ||
7a2f978b | 514 | static void |
515 | httpRequestFree(void *data) | |
516 | { | |
517 | clientHttpRequest *http = data; | |
518 | clientHttpRequest **H; | |
519 | ConnStateData *conn = http->conn; | |
520 | StoreEntry *entry = http->entry; | |
521 | request_t *request = http->request; | |
522 | MemObject *mem = NULL; | |
523 | debug(12, 3) ("httpRequestFree: %s\n", storeUrl(entry)); | |
1b02b5be | 524 | if (!clientCheckTransferDone(http)) { |
7a2f978b | 525 | if (entry) |
526 | storeUnregister(entry, http); /* unregister BEFORE abort */ | |
527 | CheckQuickAbort(http); | |
528 | entry = http->entry; /* reset, IMS might have changed it */ | |
529 | if (entry && entry->ping_status == PING_WAITING) | |
530 | storeReleaseRequest(entry); | |
79d39a72 | 531 | protoUnregister(entry, request); |
7a2f978b | 532 | } |
533 | assert(http->log_type < LOG_TYPE_MAX); | |
534 | if (entry) | |
535 | mem = entry->mem_obj; | |
536 | if (http->out.size || http->log_type) { | |
537 | http->al.icp.opcode = 0; | |
23d92c64 | 538 | http->al.url = http->uri; |
7a2f978b | 539 | if (mem) { |
540 | http->al.http.code = mem->reply->code; | |
541 | http->al.http.content_type = mem->reply->content_type; | |
542 | } | |
543 | http->al.cache.caddr = conn->log_addr; | |
544 | http->al.cache.size = http->out.size; | |
545 | http->al.cache.code = http->log_type; | |
546 | http->al.cache.msec = tvSubMsec(http->start, current_time); | |
547 | http->al.cache.ident = conn->ident.ident; | |
548 | if (request) { | |
549 | http->al.http.method = request->method; | |
550 | http->al.headers.request = request->headers; | |
551 | http->al.hier = request->hier; | |
552 | } | |
553 | accessLogLog(&http->al); | |
a7c05555 | 554 | clientUpdateCounters(http); |
7a2f978b | 555 | clientdbUpdate(conn->peer.sin_addr, http->log_type, PROTO_HTTP); |
556 | } | |
557 | if (http->redirect_state == REDIRECT_PENDING) | |
23d92c64 | 558 | redirectUnregister(http->uri, http); |
7a2f978b | 559 | if (http->acl_checklist) |
560 | aclChecklistFree(http->acl_checklist); | |
88aad2e5 | 561 | if (request) |
c24fca87 | 562 | checkFailureRatio(request->err_type, http->al.hier.code); |
23d92c64 | 563 | safe_free(http->uri); |
564 | safe_free(http->log_uri); | |
7a2f978b | 565 | safe_free(http->al.headers.reply); |
566 | if (entry) { | |
567 | http->entry = NULL; | |
568 | storeUnregister(entry, http); | |
569 | storeUnlockObject(entry); | |
570 | } | |
571 | /* old_entry might still be set if we didn't yet get the reply | |
1b02b5be | 572 | * code in clientHandleIMSReply() */ |
7a2f978b | 573 | if (http->old_entry) { |
574 | storeUnregister(http->old_entry, http); | |
575 | storeUnlockObject(http->old_entry); | |
576 | http->old_entry = NULL; | |
577 | } | |
578 | requestUnlink(http->request); | |
579 | assert(http != http->next); | |
580 | assert(http->conn->chr != NULL); | |
581 | H = &http->conn->chr; | |
582 | while (*H) { | |
583 | if (*H == http) | |
584 | break; | |
585 | H = &(*H)->next; | |
586 | } | |
587 | assert(*H != NULL); | |
588 | *H = http->next; | |
589 | http->next = NULL; | |
590 | cbdataFree(http); | |
591 | } | |
592 | ||
593 | /* This is a handler normally called by comm_close() */ | |
594 | static void | |
595 | connStateFree(int fd, void *data) | |
596 | { | |
597 | ConnStateData *connState = data; | |
598 | clientHttpRequest *http; | |
599 | debug(12, 3) ("connStateFree: FD %d\n", fd); | |
600 | assert(connState != NULL); | |
79d39a72 | 601 | while ((http = connState->chr) != NULL) { |
7a2f978b | 602 | assert(http->conn == connState); |
603 | assert(connState->chr != connState->chr->next); | |
604 | httpRequestFree(http); | |
605 | } | |
606 | if (connState->ident.fd > -1) | |
607 | comm_close(connState->ident.fd); | |
608 | safe_free(connState->in.buf); | |
609 | meta_data.misc -= connState->in.size; | |
610 | pconnHistCount(0, connState->nrequests); | |
611 | cbdataFree(connState); | |
612 | } | |
613 | ||
614 | static void | |
50ddd7a4 | 615 | clientParseRequestHeaders(clientHttpRequest * http) |
7a2f978b | 616 | { |
617 | request_t *request = http->request; | |
618 | char *request_hdr = request->headers; | |
619 | char *t = NULL; | |
620 | request->ims = -2; | |
621 | request->imslen = -1; | |
622 | if ((t = mime_get_header(request_hdr, "If-Modified-Since"))) { | |
79a15e0a | 623 | EBIT_SET(request->flags, REQ_IMS); |
7a2f978b | 624 | request->ims = parse_rfc1123(t); |
625 | while ((t = strchr(t, ';'))) { | |
626 | for (t++; isspace(*t); t++); | |
627 | if (strncasecmp(t, "length=", 7) == 0) | |
628 | request->imslen = atoi(t + 7); | |
629 | } | |
630 | } | |
631 | if ((t = mime_get_header(request_hdr, "Pragma"))) { | |
632 | if (!strcasecmp(t, "no-cache")) | |
79a15e0a | 633 | EBIT_SET(request->flags, REQ_NOCACHE); |
7a2f978b | 634 | } |
635 | if (mime_get_header(request_hdr, "Range")) { | |
79a15e0a | 636 | EBIT_SET(request->flags, REQ_NOCACHE); |
637 | EBIT_SET(request->flags, REQ_RANGE); | |
7a2f978b | 638 | } else if (mime_get_header(request_hdr, "Request-Range")) { |
79a15e0a | 639 | EBIT_SET(request->flags, REQ_NOCACHE); |
640 | EBIT_SET(request->flags, REQ_RANGE); | |
7a2f978b | 641 | } |
642 | if (mime_get_header(request_hdr, "Authorization")) | |
79a15e0a | 643 | EBIT_SET(request->flags, REQ_AUTH); |
7a2f978b | 644 | if (request->login[0] != '\0') |
79a15e0a | 645 | EBIT_SET(request->flags, REQ_AUTH); |
7a2f978b | 646 | if ((t = mime_get_header(request_hdr, "Proxy-Connection"))) { |
647 | if (!strcasecmp(t, "Keep-Alive")) | |
79a15e0a | 648 | EBIT_SET(request->flags, REQ_PROXY_KEEPALIVE); |
7a2f978b | 649 | } |
650 | if ((t = mime_get_header(request_hdr, "Via"))) | |
651 | if (strstr(t, ThisCache)) { | |
652 | if (!http->accel) { | |
653 | debug(12, 1) ("WARNING: Forwarding loop detected for '%s'\n", | |
23d92c64 | 654 | http->uri); |
7a2f978b | 655 | debug(12, 1) ("--> %s\n", t); |
656 | } | |
79a15e0a | 657 | EBIT_SET(request->flags, REQ_LOOPDETECT); |
7a2f978b | 658 | } |
659 | #if USE_USERAGENT_LOG | |
660 | if ((t = mime_get_header(request_hdr, "User-Agent"))) | |
661 | logUserAgent(fqdnFromAddr(http->conn->peer.sin_addr), t); | |
662 | #endif | |
663 | request->max_age = -1; | |
664 | if ((t = mime_get_header(request_hdr, "Cache-control"))) { | |
665 | if (!strncasecmp(t, "Max-age=", 8)) | |
666 | request->max_age = atoi(t + 8); | |
667 | } | |
668 | if (request->method == METHOD_TRACE) { | |
669 | if ((t = mime_get_header(request_hdr, "Max-Forwards"))) | |
670 | request->max_forwards = atoi(t); | |
671 | } | |
50ddd7a4 | 672 | if (clientCachable(http)) |
673 | EBIT_SET(request->flags, REQ_CACHABLE); | |
674 | if (clientHierarchical(http)) | |
675 | EBIT_SET(request->flags, REQ_HIERARCHICAL); | |
676 | debug(12, 5) ("clientParseRequestHeaders: REQ_NOCACHE = %s\n", | |
677 | EBIT_TEST(request->flags, REQ_NOCACHE) ? "SET" : "NOT SET"); | |
678 | debug(12, 5) ("clientParseRequestHeaders: REQ_CACHABLE = %s\n", | |
679 | EBIT_TEST(request->flags, REQ_CACHABLE) ? "SET" : "NOT SET"); | |
680 | debug(12, 5) ("clientParseRequestHeaders: REQ_HIERARCHICAL = %s\n", | |
681 | EBIT_TEST(request->flags, REQ_HIERARCHICAL) ? "SET" : "NOT SET"); | |
7a2f978b | 682 | } |
683 | ||
684 | static int | |
50ddd7a4 | 685 | clientCachable(clientHttpRequest * http) |
7a2f978b | 686 | { |
23d92c64 | 687 | const char *url = http->uri; |
7a2f978b | 688 | request_t *req = http->request; |
689 | method_t method = req->method; | |
690 | const wordlist *p; | |
691 | for (p = Config.cache_stoplist; p; p = p->next) { | |
692 | if (strstr(url, p->key)) | |
693 | return 0; | |
694 | } | |
695 | if (Config.cache_stop_relist) | |
696 | if (aclMatchRegex(Config.cache_stop_relist, url)) | |
697 | return 0; | |
698 | if (req->protocol == PROTO_HTTP) | |
699 | return httpCachable(method); | |
700 | /* FTP is always cachable */ | |
701 | if (req->protocol == PROTO_GOPHER) | |
702 | return gopherCachable(url); | |
703 | if (req->protocol == PROTO_WAIS) | |
704 | return 0; | |
705 | if (method == METHOD_CONNECT) | |
706 | return 0; | |
707 | if (method == METHOD_TRACE) | |
708 | return 0; | |
709 | if (req->protocol == PROTO_CACHEOBJ) | |
710 | return 0; | |
711 | return 1; | |
712 | } | |
713 | ||
714 | /* Return true if we can query our neighbors for this object */ | |
715 | static int | |
50ddd7a4 | 716 | clientHierarchical(clientHttpRequest * http) |
7a2f978b | 717 | { |
23d92c64 | 718 | const char *url = http->uri; |
7a2f978b | 719 | request_t *request = http->request; |
720 | method_t method = request->method; | |
721 | const wordlist *p = NULL; | |
722 | ||
723 | /* IMS needs a private key, so we can use the hierarchy for IMS only | |
724 | * if our neighbors support private keys */ | |
79a15e0a | 725 | if (EBIT_TEST(request->flags, REQ_IMS) && !neighbors_do_private_keys) |
7a2f978b | 726 | return 0; |
79a15e0a | 727 | if (EBIT_TEST(request->flags, REQ_AUTH)) |
7a2f978b | 728 | return 0; |
729 | if (method == METHOD_TRACE) | |
730 | return 1; | |
731 | if (method != METHOD_GET) | |
732 | return 0; | |
733 | /* scan hierarchy_stoplist */ | |
734 | for (p = Config.hierarchy_stoplist; p; p = p->next) | |
735 | if (strstr(url, p->key)) | |
736 | return 0; | |
79a15e0a | 737 | if (EBIT_TEST(request->flags, REQ_LOOPDETECT)) |
7a2f978b | 738 | return 0; |
739 | if (request->protocol == PROTO_HTTP) | |
740 | return httpCachable(method); | |
741 | if (request->protocol == PROTO_GOPHER) | |
742 | return gopherCachable(url); | |
743 | if (request->protocol == PROTO_WAIS) | |
744 | return 0; | |
745 | if (request->protocol == PROTO_CACHEOBJ) | |
746 | return 0; | |
747 | return 1; | |
748 | } | |
749 | ||
a7c05555 | 750 | static int |
7a2f978b | 751 | isTcpHit(log_type code) |
752 | { | |
753 | /* this should be a bitmap for better optimization */ | |
754 | if (code == LOG_TCP_HIT) | |
755 | return 1; | |
756 | if (code == LOG_TCP_IMS_HIT) | |
757 | return 1; | |
758 | if (code == LOG_TCP_REFRESH_FAIL_HIT) | |
759 | return 1; | |
760 | if (code == LOG_TCP_REFRESH_HIT) | |
761 | return 1; | |
762 | if (code == LOG_TCP_NEGATIVE_HIT) | |
763 | return 1; | |
764 | if (code == LOG_TCP_MEM_HIT) | |
765 | return 1; | |
766 | return 0; | |
767 | } | |
768 | ||
769 | static void | |
770 | clientAppendReplyHeader(char *hdr, const char *line, size_t * sz, size_t max) | |
771 | { | |
772 | size_t n = *sz + strlen(line) + 2; | |
773 | if (n >= max) | |
774 | return; | |
775 | strcpy(hdr + (*sz), line); | |
776 | strcat(hdr + (*sz), crlf); | |
777 | *sz = n; | |
778 | } | |
779 | ||
780 | size_t | |
781 | clientBuildReplyHeader(clientHttpRequest * http, | |
782 | char *hdr_in, | |
783 | size_t * in_len, | |
784 | char *hdr_out, | |
785 | size_t out_sz) | |
786 | { | |
ab013258 | 787 | LOCAL_ARRAY(char, no_forward, 1024); |
7a2f978b | 788 | char *xbuf; |
789 | char *ybuf; | |
790 | char *t = NULL; | |
791 | char *end = NULL; | |
792 | size_t len = 0; | |
793 | size_t hdr_len = 0; | |
794 | size_t l; | |
795 | end = mime_headers_end(hdr_in); | |
796 | if (end == NULL) { | |
797 | debug(12, 3) ("clientBuildReplyHeader: DIDN'T FIND END-OF-HEADERS\n"); | |
7a2f978b | 798 | return 0; |
799 | } | |
3f6c0fb2 | 800 | xbuf = memAllocate(MEM_4K_BUF, 1); |
801 | ybuf = memAllocate(MEM_4K_BUF, 1); | |
7a2f978b | 802 | for (t = hdr_in; t < end; t += strcspn(t, crlf), t += strspn(t, crlf)) { |
803 | hdr_len = t - hdr_in; | |
804 | l = strcspn(t, crlf) + 1; | |
805 | xstrncpy(xbuf, t, l > 4096 ? 4096 : l); | |
7a2f978b | 806 | #if 0 |
807 | if (strncasecmp(xbuf, "Accept-Ranges:", 14) == 0) | |
808 | continue; | |
809 | if (strncasecmp(xbuf, "Etag:", 5) == 0) | |
810 | continue; | |
811 | #endif | |
812 | if (strncasecmp(xbuf, "Proxy-Connection:", 17) == 0) | |
813 | continue; | |
ab013258 | 814 | if (strncasecmp(xbuf, "Connection:", 11) == 0) { |
815 | handleConnectionHeader(0, no_forward, &xbuf[11]); | |
7a2f978b | 816 | continue; |
ab013258 | 817 | } |
7a2f978b | 818 | if (strncasecmp(xbuf, "Keep-Alive:", 11) == 0) |
819 | continue; | |
820 | if (strncasecmp(xbuf, "Set-Cookie:", 11) == 0) | |
821 | if (isTcpHit(http->log_type)) | |
822 | continue; | |
ab013258 | 823 | if (!handleConnectionHeader(1, no_forward, xbuf)) |
824 | clientAppendReplyHeader(hdr_out, xbuf, &len, out_sz - 512); | |
7a2f978b | 825 | } |
826 | hdr_len = end - hdr_in; | |
827 | /* Append X-Cache: */ | |
828 | snprintf(ybuf, 4096, "X-Cache: %s", isTcpHit(http->log_type) ? "HIT" : "MISS"); | |
829 | clientAppendReplyHeader(hdr_out, ybuf, &len, out_sz); | |
830 | /* Append Proxy-Connection: */ | |
79a15e0a | 831 | if (EBIT_TEST(http->request->flags, REQ_PROXY_KEEPALIVE)) { |
7a2f978b | 832 | snprintf(ybuf, 4096, "Proxy-Connection: Keep-Alive"); |
833 | clientAppendReplyHeader(hdr_out, ybuf, &len, out_sz); | |
834 | } | |
835 | clientAppendReplyHeader(hdr_out, null_string, &len, out_sz); | |
836 | if (in_len) | |
837 | *in_len = hdr_len; | |
838 | if ((l = strlen(hdr_out)) != len) { | |
839 | debug_trap("clientBuildReplyHeader: size mismatch"); | |
840 | len = l; | |
841 | } | |
842 | debug(12, 3) ("clientBuildReplyHeader: OUTPUT:\n%s\n", hdr_out); | |
3f6c0fb2 | 843 | memFree(MEM_4K_BUF, xbuf); |
844 | memFree(MEM_4K_BUF, ybuf); | |
7a2f978b | 845 | return len; |
846 | } | |
847 | ||
4c323c5f | 848 | static void |
7a2f978b | 849 | clientCacheHit(void *data, char *buf, ssize_t size) |
850 | { | |
851 | clientHttpRequest *http = data; | |
852 | if (size >= 0) { | |
853 | clientSendMoreData(data, buf, size); | |
854 | } else if (http->entry == NULL) { | |
855 | debug(12, 3) ("clientCacheHit: request aborted\n"); | |
856 | } else { | |
857 | /* swap in failure */ | |
858 | http->log_type = LOG_TCP_SWAPFAIL_MISS; | |
fb63215a | 859 | clientProcessMiss(http); |
7a2f978b | 860 | } |
861 | } | |
862 | ||
4c323c5f | 863 | static void |
7a2f978b | 864 | clientSendMoreData(void *data, char *buf, ssize_t size) |
865 | { | |
866 | clientHttpRequest *http = data; | |
867 | StoreEntry *entry = http->entry; | |
868 | ConnStateData *conn = http->conn; | |
869 | int fd = conn->fd; | |
870 | char *p = NULL; | |
871 | size_t hdrlen; | |
872 | size_t l = 0; | |
873 | size_t writelen; | |
874 | char *newbuf; | |
3f6c0fb2 | 875 | FREE *freefunc = memFree4K; |
7a2f978b | 876 | int hack = 0; |
877 | char C = '\0'; | |
878 | assert(size <= SM_PAGE_SIZE); | |
40defb17 | 879 | assert(http->request != NULL); |
ab013258 | 880 | debug(12, 5) ("clientSendMoreData: FD %d '%s', out.offset=%d \n", |
7a2f978b | 881 | fd, storeUrl(entry), http->out.offset); |
882 | if (conn->chr != http) { | |
883 | /* there is another object in progress, defer this one */ | |
a43b3862 | 884 | debug(0, 0) ("clientSendMoreData: Deferring %s\n", storeUrl(entry)); |
7a2f978b | 885 | freefunc(buf); |
886 | return; | |
887 | } else if (entry->store_status == STORE_ABORTED) { | |
888 | freefunc(buf); | |
889 | return; | |
890 | } else if (size < 0) { | |
891 | freefunc(buf); | |
892 | return; | |
893 | } else if (size == 0) { | |
894 | clientWriteComplete(fd, NULL, 0, DISK_OK, http); | |
895 | freefunc(buf); | |
896 | return; | |
897 | } | |
898 | writelen = size; | |
40defb17 | 899 | if (http->out.offset == 0) { |
7a2f978b | 900 | if (Config.onoff.log_mime_hdrs) { |
901 | if ((p = mime_headers_end(buf))) { | |
902 | safe_free(http->al.headers.reply); | |
903 | http->al.headers.reply = xcalloc(1 + p - buf, 1); | |
904 | xstrncpy(http->al.headers.reply, buf, p - buf); | |
905 | } | |
906 | } | |
907 | /* make sure 'buf' is null terminated somewhere */ | |
908 | if (size == SM_PAGE_SIZE) { | |
909 | hack = 1; | |
910 | size--; | |
911 | C = *(buf + size); | |
912 | } | |
913 | *(buf + size) = '\0'; | |
3f6c0fb2 | 914 | newbuf = memAllocate(MEM_8K_BUF, 1); |
7a2f978b | 915 | hdrlen = 0; |
ab013258 | 916 | |
7a2f978b | 917 | l = clientBuildReplyHeader(http, buf, &hdrlen, newbuf, 8192); |
918 | if (hack) | |
919 | *(buf + size++) = C; | |
920 | if (l != 0) { | |
921 | writelen = l + size - hdrlen; | |
922 | assert(writelen <= 8192); | |
923 | /* | |
924 | * l is the length of the new headers in newbuf | |
925 | * hdrlen is the length of the old headers in buf | |
926 | * size - hdrlen is the amount of body in buf | |
927 | */ | |
928 | debug(12, 3) ("clientSendMoreData: Appending %d bytes after headers\n", | |
929 | (int) (size - hdrlen)); | |
930 | xmemcpy(newbuf + l, buf + hdrlen, size - hdrlen); | |
931 | /* replace buf with newbuf */ | |
932 | freefunc(buf); | |
933 | buf = newbuf; | |
3f6c0fb2 | 934 | freefunc = memFree8K; |
7a2f978b | 935 | newbuf = NULL; |
936 | } else { | |
3f6c0fb2 | 937 | memFree(MEM_8K_BUF, newbuf); |
7a2f978b | 938 | newbuf = NULL; |
939 | if (size < SM_PAGE_SIZE && entry->store_status == STORE_PENDING) { | |
940 | /* wait for more to arrive */ | |
941 | storeClientCopy(entry, | |
942 | http->out.offset + size, | |
943 | http->out.offset, | |
944 | SM_PAGE_SIZE, | |
945 | buf, | |
946 | clientSendMoreData, | |
947 | http); | |
948 | return; | |
949 | } | |
950 | } | |
951 | } | |
952 | http->out.offset += size; | |
40defb17 | 953 | /* |
954 | * ick, this is gross | |
955 | */ | |
7a2f978b | 956 | if (http->request->method == METHOD_HEAD) { |
957 | if ((p = mime_headers_end(buf))) { | |
958 | *p = '\0'; | |
959 | writelen = p - buf; | |
960 | /* force end */ | |
f68b5d81 | 961 | if (entry->store_status == STORE_PENDING) |
c24fca87 | 962 | http->out.offset = entry->mem_obj->inmem_hi; |
f68b5d81 | 963 | else |
c24fca87 | 964 | http->out.offset = entry->object_len; |
7a2f978b | 965 | } |
966 | } | |
967 | comm_write(fd, buf, writelen, clientWriteComplete, http, freefunc); | |
968 | } | |
969 | ||
fc5d6f7f | 970 | static void |
79a15e0a | 971 | clientWriteComplete(int fd, char *bufnotused, size_t size, int errflag, void *data) |
7a2f978b | 972 | { |
973 | clientHttpRequest *http = data; | |
974 | ConnStateData *conn; | |
975 | StoreEntry *entry = http->entry; | |
b34ed725 | 976 | int done; |
7a2f978b | 977 | http->out.size += size; |
978 | debug(12, 5) ("clientWriteComplete: FD %d, sz %d, err %d, off %d, len %d\n", | |
979 | fd, size, errflag, http->out.offset, entry->object_len); | |
980 | if (errflag) { | |
981 | CheckQuickAbort(http); | |
7a2f978b | 982 | comm_close(fd); |
983 | } else if (entry->store_status == STORE_ABORTED) { | |
7a2f978b | 984 | comm_close(fd); |
1b02b5be | 985 | } else if ((done = clientCheckTransferDone(http)) || size == 0) { |
7a2f978b | 986 | debug(12, 5) ("clientWriteComplete: FD %d transfer is DONE\n", fd); |
987 | /* We're finished case */ | |
b34ed725 | 988 | if (http->entry->mem_obj->reply->content_length < 0 || !done || |
989 | EBIT_TEST(entry->flag, ENTRY_BAD_LENGTH)) { | |
990 | /* | |
991 | * Client connection closed due to unknown or invalid | |
992 | * content length. Persistent connection is not possible. | |
993 | * This catches most cases, but probably not all. | |
994 | */ | |
7a2f978b | 995 | comm_close(fd); |
79a15e0a | 996 | } else if (EBIT_TEST(http->request->flags, REQ_PROXY_KEEPALIVE)) { |
7a2f978b | 997 | debug(12, 5) ("clientWriteComplete: FD %d Keeping Alive\n", fd); |
998 | conn = http->conn; | |
b34ed725 | 999 | conn->defer.until = 0; /* Kick it to read a new request */ |
7a2f978b | 1000 | httpRequestFree(http); |
79d39a72 | 1001 | if ((http = conn->chr) != NULL) { |
7a2f978b | 1002 | debug(12, 1) ("clientWriteComplete: FD %d Sending next request\n", fd); |
8daca701 | 1003 | if (!storeClientCopyPending(http->entry, http)) |
1004 | storeClientCopy(http->entry, | |
1005 | http->out.offset, | |
1006 | http->out.offset, | |
1007 | SM_PAGE_SIZE, | |
3f6c0fb2 | 1008 | memAllocate(MEM_4K_BUF, 1), |
8daca701 | 1009 | clientSendMoreData, |
1010 | http); | |
7a2f978b | 1011 | } else { |
0ca54a51 | 1012 | debug(12, 5) ("clientWriteComplete: FD %d reading next request\n", fd); |
7a2f978b | 1013 | fd_note(fd, "Reading next request"); |
0ca54a51 | 1014 | /* |
1015 | * Set the timeout BEFORE calling clientReadRequest(). | |
1016 | */ | |
7a2f978b | 1017 | commSetTimeout(fd, 15, requestTimeout, conn); |
47130615 | 1018 | clientReadRequest(fd, conn); /* Read next request */ |
0ca54a51 | 1019 | /* |
1020 | * Note, the FD may be closed at this point. | |
1021 | */ | |
7a2f978b | 1022 | } |
1023 | } else { | |
1024 | comm_close(fd); | |
1025 | } | |
1026 | } else { | |
1027 | /* More data will be coming from primary server; register with | |
1028 | * storage manager. */ | |
1029 | storeClientCopy(entry, | |
1030 | http->out.offset, | |
1031 | http->out.offset, | |
1032 | SM_PAGE_SIZE, | |
3f6c0fb2 | 1033 | memAllocate(MEM_4K_BUF, 1), |
7a2f978b | 1034 | clientSendMoreData, |
1035 | http); | |
1036 | } | |
1037 | } | |
1038 | ||
1039 | static void | |
1b02b5be | 1040 | clientGetHeadersForIMS(void *data, char *buf, ssize_t size) |
7a2f978b | 1041 | { |
1042 | clientHttpRequest *http = data; | |
7a2f978b | 1043 | StoreEntry *entry = http->entry; |
1044 | MemObject *mem = entry->mem_obj; | |
1045 | char *reply = NULL; | |
1046 | assert(size <= SM_PAGE_SIZE); | |
3f6c0fb2 | 1047 | memFree(MEM_4K_BUF, buf); |
1b02b5be | 1048 | buf = NULL; |
7a2f978b | 1049 | if (size < 0) { |
1b02b5be | 1050 | debug(12, 1) ("clientGetHeadersForIMS: storeClientCopy failed for '%s'\n", |
7a2f978b | 1051 | storeKeyText(entry->key)); |
fb63215a | 1052 | clientProcessMiss(http); |
7a2f978b | 1053 | return; |
1054 | } | |
1055 | if (mem->reply->code == 0) { | |
1056 | if (entry->mem_status == IN_MEMORY) { | |
fb63215a | 1057 | clientProcessMiss(http); |
7a2f978b | 1058 | return; |
1059 | } | |
1060 | /* All headers are not yet available, wait for more data */ | |
1061 | storeClientCopy(entry, | |
1062 | http->out.offset + size, | |
1063 | http->out.offset, | |
1064 | SM_PAGE_SIZE, | |
3f6c0fb2 | 1065 | memAllocate(MEM_4K_BUF, 1), |
1b02b5be | 1066 | clientGetHeadersForIMS, |
7a2f978b | 1067 | http); |
1068 | return; | |
1069 | } | |
1070 | /* All headers are available, check if object is modified or not */ | |
1071 | /* --------------------------------------------------------------- | |
1072 | * Removed check for reply->code != 200 because of a potential | |
1073 | * problem with ICP. We will return a HIT for any public, cached | |
1074 | * object. This includes other responses like 301, 410, as coded in | |
1075 | * http.c. It is Bad(tm) to return UDP_HIT and then, if the reply | |
50ddd7a4 | 1076 | * code is not 200, hand off to clientProcessMiss(), which may disallow |
7a2f978b | 1077 | * the request based on 'miss_access' rules. Alternatively, we might |
1078 | * consider requiring returning UDP_HIT only for 200's. This | |
1079 | * problably means an entry->flag bit, which would be lost during | |
1080 | * restart because the flags aren't preserved across restarts. | |
1081 | * --DW 3/11/96. | |
1082 | * ---------------------------------------------------------------- */ | |
1083 | #ifdef CHECK_REPLY_CODE_NOTEQUAL_200 | |
1084 | /* Only objects with statuscode==200 can be "Not modified" */ | |
1085 | if (mem->reply->code != 200) { | |
1b02b5be | 1086 | debug(12, 4) ("clientGetHeadersForIMS: Reply code %d!=200\n", |
7a2f978b | 1087 | mem->reply->code); |
fb63215a | 1088 | clientProcessMiss(http); |
7a2f978b | 1089 | return; |
1090 | } | |
7a2f978b | 1091 | #endif |
1b02b5be | 1092 | http->log_type = LOG_TCP_IMS_HIT; |
7a2f978b | 1093 | entry->refcount++; |
1094 | if (modifiedSince(entry, http->request)) { | |
1095 | storeClientCopy(entry, | |
1096 | http->out.offset, | |
1097 | http->out.offset, | |
1098 | SM_PAGE_SIZE, | |
3f6c0fb2 | 1099 | memAllocate(MEM_4K_BUF, 1), |
7a2f978b | 1100 | clientSendMoreData, |
1101 | http); | |
1102 | return; | |
1103 | } | |
1b02b5be | 1104 | debug(12, 4) ("clientGetHeadersForIMS: Not modified '%s'\n", storeUrl(entry)); |
1105 | reply = clientConstruct304reply(mem->reply); | |
fb63215a | 1106 | comm_write(http->conn->fd, |
7a2f978b | 1107 | xstrdup(reply), |
1108 | strlen(reply), | |
1b02b5be | 1109 | clientHandleIMSComplete, |
7a2f978b | 1110 | http, |
1111 | xfree); | |
1112 | } | |
1113 | ||
1114 | static void | |
1b02b5be | 1115 | clientHandleIMSComplete(int fd, char *bufnotused, size_t size, int flag, void *data) |
7a2f978b | 1116 | { |
1117 | clientHttpRequest *http = data; | |
1118 | StoreEntry *entry = http->entry; | |
1b02b5be | 1119 | debug(12, 5) ("clientHandleIMSComplete: Not Modified sent '%s'\n", storeUrl(entry)); |
7a2f978b | 1120 | /* Set up everything for the logging */ |
1121 | storeUnregister(entry, http); | |
1122 | storeUnlockObject(entry); | |
1123 | http->entry = NULL; | |
1124 | http->out.size += size; | |
1125 | http->al.http.code = 304; | |
79a15e0a | 1126 | if (flag != COMM_ERR_CLOSING) |
7a2f978b | 1127 | comm_close(fd); |
1128 | } | |
1129 | ||
50ddd7a4 | 1130 | static log_type |
1131 | clientProcessRequest2(clientHttpRequest * http) | |
1132 | { | |
1133 | const request_t *r = http->request; | |
23d92c64 | 1134 | const cache_key *key = storeKeyPublic(http->uri, r->method); |
50ddd7a4 | 1135 | StoreEntry *e; |
1136 | if ((e = http->entry = storeGet(key)) == NULL) { | |
1137 | /* this object isn't in the cache */ | |
1138 | return LOG_TCP_MISS; | |
1139 | } else if (EBIT_TEST(e->flag, ENTRY_SPECIAL)) { | |
1140 | if (e->mem_status == IN_MEMORY) | |
1141 | return LOG_TCP_MEM_HIT; | |
1142 | else | |
1143 | return LOG_TCP_HIT; | |
1144 | } else if (!storeEntryValidToSend(e)) { | |
1145 | storeRelease(e); | |
1146 | http->entry = NULL; | |
1147 | return LOG_TCP_MISS; | |
1148 | } else if (EBIT_TEST(r->flags, REQ_NOCACHE)) { | |
1149 | /* NOCACHE should always eject a negative cached object */ | |
1150 | if (EBIT_TEST(e->flag, ENTRY_NEGCACHED)) | |
1151 | storeRelease(e); | |
1152 | /* NOCACHE+IMS should not eject a valid object */ | |
1153 | else if (EBIT_TEST(r->flags, REQ_IMS)) | |
1154 | (void) 0; | |
1155 | /* Request-Range should not eject a valid object */ | |
1156 | else if (EBIT_TEST(r->flags, REQ_RANGE)) | |
1157 | (void) 0; | |
1158 | else | |
1159 | storeRelease(e); | |
1160 | ipcacheReleaseInvalid(r->host); | |
1161 | http->entry = NULL; | |
1162 | return LOG_TCP_CLIENT_REFRESH; | |
1163 | } else if (checkNegativeHit(e)) { | |
1164 | return LOG_TCP_NEGATIVE_HIT; | |
1165 | } else if (refreshCheck(e, r, 0)) { | |
1166 | /* The object is in the cache, but it needs to be validated. Use | |
1167 | * LOG_TCP_REFRESH_MISS for the time being, maybe change it to | |
1b02b5be | 1168 | * _HIT later in clientHandleIMSReply() */ |
50ddd7a4 | 1169 | if (r->protocol == PROTO_HTTP) |
1170 | return LOG_TCP_REFRESH_MISS; | |
1171 | else | |
1172 | return LOG_TCP_MISS; /* XXX zoinks */ | |
1173 | } else if (EBIT_TEST(r->flags, REQ_IMS)) { | |
1174 | /* User-initiated IMS request for something we think is valid */ | |
1175 | return LOG_TCP_IMS_MISS; | |
1176 | } else if (e->mem_status == IN_MEMORY) { | |
1177 | return LOG_TCP_MEM_HIT; | |
1178 | } else { | |
1179 | return LOG_TCP_HIT; | |
1180 | } | |
1181 | } | |
1182 | ||
4c323c5f | 1183 | static void |
fb63215a | 1184 | clientProcessRequest(clientHttpRequest * http) |
7a2f978b | 1185 | { |
23d92c64 | 1186 | char *url = http->uri; |
7a2f978b | 1187 | StoreEntry *entry = NULL; |
50ddd7a4 | 1188 | request_t *r = http->request; |
fb63215a | 1189 | int fd = http->conn->fd; |
b17b22eb | 1190 | char *hdr; |
50ddd7a4 | 1191 | debug(12, 4) ("clientProcessRequest: %s '%s'\n", |
1192 | RequestMethodStr[r->method], | |
7a2f978b | 1193 | url); |
fb63215a | 1194 | if (r->method == METHOD_CONNECT) { |
7a2f978b | 1195 | http->log_type = LOG_TCP_MISS; |
ea0efb98 | 1196 | sslStart(fd, url, r, &http->out.size); |
1197 | return; | |
fb63215a | 1198 | } else if (r->method == METHOD_PURGE) { |
ea0efb98 | 1199 | clientPurgeRequest(http); |
1200 | return; | |
fb63215a | 1201 | } else if (r->method == METHOD_TRACE) { |
50ddd7a4 | 1202 | if (r->max_forwards == 0) { |
b17b22eb | 1203 | http->entry = clientCreateStoreEntry(http, r->method, 0); |
1204 | storeReleaseRequest(http->entry); | |
1205 | storeBuffer(http->entry); | |
1206 | hdr = httpReplyHeader(1.0, | |
164f7660 | 1207 | HTTP_OK, |
1208 | "text/plain", | |
1209 | r->headers_sz, | |
1210 | 0, | |
1211 | squid_curtime); | |
b17b22eb | 1212 | storeAppend(http->entry, hdr, strlen(hdr)); |
1213 | storeAppend(http->entry, "\r\n", 2); | |
1214 | storeAppend(http->entry, r->headers, r->headers_sz); | |
1215 | storeComplete(http->entry); | |
7a2f978b | 1216 | return; |
1217 | } | |
1218 | /* yes, continue */ | |
fb63215a | 1219 | } else if (r->protocol != PROTO_HTTP) { |
1220 | (void) 0; /* fallthrough */ | |
1221 | } else if (r->method == METHOD_POST) { | |
7a2f978b | 1222 | http->log_type = LOG_TCP_MISS; |
ea0efb98 | 1223 | passStart(fd, url, r, &http->out.size); |
1224 | return; | |
fb63215a | 1225 | } else if (r->method == METHOD_PUT) { |
1226 | http->log_type = LOG_TCP_MISS; | |
ea0efb98 | 1227 | passStart(fd, url, r, &http->out.size); |
1228 | return; | |
7a2f978b | 1229 | } |
fb63215a | 1230 | http->log_type = clientProcessRequest2(http); |
50ddd7a4 | 1231 | debug(12, 4) ("clientProcessRequest: %s for '%s'\n", |
7a2f978b | 1232 | log_tags[http->log_type], |
23d92c64 | 1233 | http->uri); |
50ddd7a4 | 1234 | if ((entry = http->entry) != NULL) { |
7a2f978b | 1235 | storeLockObject(entry); |
23d92c64 | 1236 | storeCreateMemObject(entry, http->uri, http->log_uri); |
7a2f978b | 1237 | storeClientListAdd(entry, http); |
1238 | } | |
7a2f978b | 1239 | http->out.offset = 0; |
1240 | switch (http->log_type) { | |
1241 | case LOG_TCP_HIT: | |
1242 | case LOG_TCP_NEGATIVE_HIT: | |
1243 | case LOG_TCP_MEM_HIT: | |
1244 | entry->refcount++; /* HIT CASE */ | |
1245 | storeClientCopy(entry, | |
1246 | http->out.offset, | |
1247 | http->out.offset, | |
1248 | SM_PAGE_SIZE, | |
3f6c0fb2 | 1249 | memAllocate(MEM_4K_BUF, 1), |
7a2f978b | 1250 | clientCacheHit, |
1251 | http); | |
1252 | break; | |
1253 | case LOG_TCP_IMS_MISS: | |
1254 | storeClientCopy(entry, | |
1255 | http->out.offset, | |
1256 | http->out.offset, | |
1257 | SM_PAGE_SIZE, | |
3f6c0fb2 | 1258 | memAllocate(MEM_4K_BUF, 1), |
1b02b5be | 1259 | clientGetHeadersForIMS, |
7a2f978b | 1260 | http); |
1261 | break; | |
1262 | case LOG_TCP_REFRESH_MISS: | |
fb63215a | 1263 | clientProcessExpired(http); |
7a2f978b | 1264 | break; |
1265 | default: | |
fb63215a | 1266 | clientProcessMiss(http); |
7a2f978b | 1267 | break; |
1268 | } | |
1269 | } | |
1270 | ||
1271 | /* | |
1272 | * Prepare to fetch the object as it's a cache miss of some kind. | |
1273 | */ | |
1274 | static void | |
fb63215a | 1275 | clientProcessMiss(clientHttpRequest * http) |
7a2f978b | 1276 | { |
23d92c64 | 1277 | char *url = http->uri; |
f44af445 | 1278 | request_t *r = http->request; |
1279 | char *request_hdr = r->headers; | |
7a2f978b | 1280 | aclCheck_t ch; |
1281 | int answer; | |
1282 | ErrorState *err = NULL; | |
50ddd7a4 | 1283 | debug(12, 4) ("clientProcessMiss: '%s %s'\n", |
f44af445 | 1284 | RequestMethodStr[r->method], url); |
50ddd7a4 | 1285 | debug(12, 10) ("clientProcessMiss: request_hdr:\n%s\n", request_hdr); |
79e0dc20 | 1286 | /* |
1287 | * We might have a left-over StoreEntry from a failed cache hit | |
1288 | * or IMS request. | |
1289 | */ | |
1290 | if (http->entry) { | |
1291 | storeUnregister(http->entry, http); | |
1292 | storeUnlockObject(http->entry); | |
1293 | http->entry = NULL; | |
1294 | } | |
1295 | /* | |
1296 | * Check if this host is allowed to fetch MISSES from us (miss_access) | |
1297 | */ | |
7a2f978b | 1298 | memset(&ch, '\0', sizeof(aclCheck_t)); |
1299 | ch.src_addr = http->conn->peer.sin_addr; | |
f44af445 | 1300 | ch.request = r; |
7a2f978b | 1301 | answer = aclCheckFast(Config.accessList.miss, &ch); |
1302 | if (answer == 0) { | |
1303 | http->al.http.code = HTTP_FORBIDDEN; | |
bdb3c273 | 1304 | err = errorCon(ERR_FORWARDING_DENIED, HTTP_FORBIDDEN); |
f44af445 | 1305 | err->request = requestLink(r); |
7a2f978b | 1306 | err->src_addr = http->conn->peer.sin_addr; |
f44af445 | 1307 | http->entry = clientCreateStoreEntry(http, r->method, 0); |
79e0dc20 | 1308 | errorAppendEntry(http->entry, err); |
7a2f978b | 1309 | return; |
1310 | } | |
79e0dc20 | 1311 | assert(http->out.offset == 0); |
f44af445 | 1312 | http->entry = clientCreateStoreEntry(http, r->method, r->flags); |
79e0dc20 | 1313 | http->entry->mem_obj->fd = http->conn->fd; |
1314 | http->entry->refcount++; | |
f44af445 | 1315 | protoDispatch(http->conn->fd, http->entry, r); |
7a2f978b | 1316 | } |
1317 | ||
1318 | /* | |
1319 | * parseHttpRequest() | |
1320 | * | |
1321 | * Returns | |
1322 | * NULL on error or incomplete request | |
1323 | * a clientHttpRequest structure on success | |
1324 | */ | |
1325 | static clientHttpRequest * | |
1326 | parseHttpRequest(ConnStateData * conn, method_t * method_p, int *status, | |
1327 | char **headers_p, size_t * headers_sz_p) | |
1328 | { | |
1329 | char *inbuf = NULL; | |
1330 | char *mstr = NULL; | |
1331 | char *url = NULL; | |
1332 | char *req_hdr = NULL; | |
7a2f978b | 1333 | float http_ver; |
1334 | char *token = NULL; | |
1335 | char *t = NULL; | |
1336 | char *end = NULL; | |
1337 | int free_request = 0; | |
1338 | size_t header_sz; /* size of headers, not including first line */ | |
1339 | size_t req_sz; /* size of whole request */ | |
1340 | size_t url_sz; | |
1341 | method_t method; | |
1342 | clientHttpRequest *http = NULL; | |
1343 | ||
1344 | /* Make sure a complete line has been received */ | |
1345 | if (strchr(conn->in.buf, '\n') == NULL) { | |
1346 | debug(12, 5) ("Incomplete request line, waiting for more data\n"); | |
1347 | *status = 0; | |
1348 | return NULL; | |
1349 | } | |
1350 | /* Use xmalloc/xmemcpy instead of xstrdup because inbuf might | |
1351 | * contain NULL bytes; especially for POST data */ | |
1352 | inbuf = xmalloc(conn->in.offset + 1); | |
1353 | xmemcpy(inbuf, conn->in.buf, conn->in.offset); | |
1354 | *(inbuf + conn->in.offset) = '\0'; | |
1355 | ||
1356 | /* Look for request method */ | |
1357 | if ((mstr = strtok(inbuf, "\t ")) == NULL) { | |
1358 | debug(12, 1) ("parseHttpRequest: Can't get request method\n"); | |
3775d53c | 1359 | http = xcalloc(1, sizeof(clientHttpRequest)); |
3f6c0fb2 | 1360 | cbdataAdd(http, MEM_NONE); |
3775d53c | 1361 | http->conn = conn; |
1362 | http->start = current_time; | |
1363 | http->req_sz = conn->in.offset; | |
23d92c64 | 1364 | http->uri = xstrdup("error:invalid-request-method"); |
1365 | http->log_uri = xstrdup("error:invalid-request-method"); | |
3775d53c | 1366 | *headers_sz_p = conn->in.offset; |
1367 | *headers_p = inbuf; | |
1368 | *method_p = METHOD_NONE; | |
7a2f978b | 1369 | *status = -1; |
3775d53c | 1370 | return http; |
7a2f978b | 1371 | } |
1372 | method = urlParseMethod(mstr); | |
1373 | if (method == METHOD_NONE) { | |
1374 | debug(12, 1) ("parseHttpRequest: Unsupported method '%s'\n", mstr); | |
3775d53c | 1375 | http = xcalloc(1, sizeof(clientHttpRequest)); |
3f6c0fb2 | 1376 | cbdataAdd(http, MEM_NONE); |
3775d53c | 1377 | http->conn = conn; |
1378 | http->start = current_time; | |
1379 | http->req_sz = conn->in.offset; | |
23d92c64 | 1380 | http->uri = xstrdup("error:unsupported-request-method"); |
1381 | http->log_uri = xstrdup("error:unsupported-request-method"); | |
3775d53c | 1382 | *headers_sz_p = conn->in.offset; |
1383 | *headers_p = inbuf; | |
1384 | *method_p = METHOD_NONE; | |
7a2f978b | 1385 | *status = -1; |
3775d53c | 1386 | return http; |
7a2f978b | 1387 | } |
1388 | debug(12, 5) ("parseHttpRequest: Method is '%s'\n", mstr); | |
3775d53c | 1389 | *method_p = method; |
7a2f978b | 1390 | |
1391 | /* look for URL */ | |
1392 | if ((url = strtok(NULL, "\r\n\t ")) == NULL) { | |
1393 | debug(12, 1) ("parseHttpRequest: Missing URL\n"); | |
3775d53c | 1394 | http = xcalloc(1, sizeof(clientHttpRequest)); |
3f6c0fb2 | 1395 | cbdataAdd(http, MEM_NONE); |
3775d53c | 1396 | http->conn = conn; |
1397 | http->start = current_time; | |
1398 | http->req_sz = conn->in.offset; | |
23d92c64 | 1399 | http->uri = xstrdup("error:missing-url"); |
1400 | http->log_uri = xstrdup("error:missing-url"); | |
3775d53c | 1401 | *headers_sz_p = conn->in.offset; |
1402 | *headers_p = inbuf; | |
7a2f978b | 1403 | *status = -1; |
3775d53c | 1404 | return http; |
7a2f978b | 1405 | } |
1406 | debug(12, 5) ("parseHttpRequest: Request is '%s'\n", url); | |
1407 | ||
1408 | token = strtok(NULL, null_string); | |
1409 | for (t = token; t && *t && *t != '\n' && *t != '\r'; t++); | |
46c7dbf0 | 1410 | if (t == NULL || *t == '\0' || t == token || strncmp(token, "HTTP/", 5)) { |
7a2f978b | 1411 | debug(12, 3) ("parseHttpRequest: Missing HTTP identifier\n"); |
3775d53c | 1412 | http = xcalloc(1, sizeof(clientHttpRequest)); |
3f6c0fb2 | 1413 | cbdataAdd(http, MEM_NONE); |
3775d53c | 1414 | http->conn = conn; |
1415 | http->start = current_time; | |
1416 | http->req_sz = conn->in.offset; | |
23d92c64 | 1417 | http->uri = xstrdup("error:missing-http-ident"); |
1418 | http->log_uri = xstrdup("error:missing-http-ident"); | |
3775d53c | 1419 | *headers_sz_p = conn->in.offset; |
1420 | *headers_p = inbuf; | |
7a2f978b | 1421 | *status = -1; |
3775d53c | 1422 | return http; |
7a2f978b | 1423 | } |
84116757 | 1424 | http_ver = (float) atof(token + 5); |
7a2f978b | 1425 | |
1426 | /* Check if headers are received */ | |
1427 | if ((end = mime_headers_end(t)) == NULL) { | |
1428 | xfree(inbuf); | |
1429 | *status = 0; | |
1430 | return NULL; | |
1431 | } | |
7a2f978b | 1432 | req_hdr = t; |
c24fca87 | 1433 | /* |
1434 | * Skip whitespace at the end of the frist line, up to the | |
1435 | * first newline. | |
1436 | */ | |
1437 | while (isspace(*req_hdr)) | |
1438 | if (*(req_hdr++) == '\n') | |
1439 | break; | |
1440 | if (end <= req_hdr) { | |
1441 | /* Invalid request */ | |
1442 | debug(12, 3) ("parseHttpRequest: No request headers?\n"); | |
1443 | http = xcalloc(1, sizeof(clientHttpRequest)); | |
3f6c0fb2 | 1444 | cbdataAdd(http, MEM_NONE); |
c24fca87 | 1445 | http->conn = conn; |
1446 | http->start = current_time; | |
1447 | http->req_sz = conn->in.offset; | |
1448 | http->uri = xstrdup("error:no-request-headers"); | |
1449 | http->log_uri = xstrdup("error:no-request-headers"); | |
1450 | *headers_sz_p = conn->in.offset; | |
1451 | *headers_p = inbuf; | |
1452 | *status = -1; | |
1453 | return http; | |
1454 | } | |
7a2f978b | 1455 | header_sz = end - req_hdr; |
1456 | req_sz = end - inbuf; | |
1457 | ||
1458 | /* Ok, all headers are received */ | |
1459 | http = xcalloc(1, sizeof(clientHttpRequest)); | |
3f6c0fb2 | 1460 | cbdataAdd(http, MEM_NONE); |
7a2f978b | 1461 | http->http_ver = http_ver; |
1462 | http->conn = conn; | |
1463 | http->start = current_time; | |
1464 | http->req_sz = req_sz; | |
1465 | *headers_sz_p = header_sz; | |
1466 | *headers_p = xmalloc(header_sz + 1); | |
1467 | xmemcpy(*headers_p, req_hdr, header_sz); | |
1468 | *(*headers_p + header_sz) = '\0'; | |
1469 | ||
1470 | debug(12, 5) ("parseHttpRequest: Request Header is\n%s\n", *headers_p); | |
1471 | ||
23d92c64 | 1472 | /* Assign http->uri */ |
7a2f978b | 1473 | if ((t = strchr(url, '\n'))) /* remove NL */ |
1474 | *t = '\0'; | |
1475 | if ((t = strchr(url, '\r'))) /* remove CR */ | |
1476 | *t = '\0'; | |
1477 | if ((t = strchr(url, '#'))) /* remove HTML anchors */ | |
1478 | *t = '\0'; | |
1479 | ||
1480 | /* see if we running in Config2.Accel.on, if so got to convert it to URL */ | |
1481 | if (Config2.Accel.on && *url == '/') { | |
1482 | /* prepend the accel prefix */ | |
1483 | if (vhost_mode) { | |
1484 | /* Put the local socket IP address as the hostname */ | |
1485 | url_sz = strlen(url) + 32 + Config.appendDomainLen; | |
23d92c64 | 1486 | http->uri = xcalloc(url_sz, 1); |
1487 | snprintf(http->uri, url_sz, "http://%s:%d%s", | |
7a2f978b | 1488 | inet_ntoa(http->conn->me.sin_addr), |
1489 | (int) Config.Accel.port, | |
1490 | url); | |
23d92c64 | 1491 | debug(12, 5) ("VHOST REWRITE: '%s'\n", http->uri); |
7a2f978b | 1492 | } else if (opt_accel_uses_host && (t = mime_get_header(req_hdr, "Host"))) { |
1493 | /* If a Host: header was specified, use it to build the URL | |
1494 | * instead of the one in the Config file. */ | |
1495 | /* | |
1496 | * XXX Use of the Host: header here opens a potential | |
1497 | * security hole. There are no checks that the Host: value | |
1498 | * corresponds to one of your servers. It might, for example, | |
1499 | * refer to www.playboy.com. The 'dst' and/or 'dst_domain' ACL | |
1500 | * types should be used to prevent httpd-accelerators | |
1501 | * handling requests for non-local servers */ | |
1502 | strtok(t, " :/;@"); | |
12fc602c | 1503 | url_sz = strlen(url) + 32 + Config.appendDomainLen + |
1504 | strlen(t); | |
23d92c64 | 1505 | http->uri = xcalloc(url_sz, 1); |
1506 | snprintf(http->uri, url_sz, "http://%s:%d%s", | |
7a2f978b | 1507 | t, (int) Config.Accel.port, url); |
1508 | } else { | |
1509 | url_sz = strlen(Config2.Accel.prefix) + strlen(url) + | |
1510 | Config.appendDomainLen + 1; | |
23d92c64 | 1511 | http->uri = xcalloc(url_sz, 1); |
1512 | snprintf(http->uri, url_sz, "%s%s", Config2.Accel.prefix, url); | |
7a2f978b | 1513 | } |
1514 | http->accel = 1; | |
1515 | } else { | |
1516 | /* URL may be rewritten later, so make extra room */ | |
1517 | url_sz = strlen(url) + Config.appendDomainLen + 5; | |
23d92c64 | 1518 | http->uri = xcalloc(url_sz, 1); |
1519 | strcpy(http->uri, url); | |
7a2f978b | 1520 | http->accel = 0; |
1521 | } | |
23d92c64 | 1522 | http->log_uri = xstrdup(http->uri); |
7a2f978b | 1523 | debug(12, 5) ("parseHttpRequest: Complete request received\n"); |
1524 | if (free_request) | |
1525 | safe_free(url); | |
1526 | xfree(inbuf); | |
7a2f978b | 1527 | *status = 1; |
1528 | return http; | |
1529 | } | |
1530 | ||
1531 | static int | |
79d39a72 | 1532 | clientReadDefer(int fdnotused, void *data) |
7a2f978b | 1533 | { |
1534 | ConnStateData *conn = data; | |
1535 | return conn->defer.until > squid_curtime; | |
1536 | } | |
1537 | ||
1538 | static void | |
1539 | clientReadRequest(int fd, void *data) | |
1540 | { | |
1541 | ConnStateData *conn = data; | |
1542 | int parser_return_code = 0; | |
1543 | int k; | |
1544 | request_t *request = NULL; | |
7a2f978b | 1545 | int size; |
7a2f978b | 1546 | method_t method; |
1547 | clientHttpRequest *http = NULL; | |
1548 | clientHttpRequest **H = NULL; | |
1549 | char *headers; | |
1550 | size_t headers_sz; | |
1551 | ErrorState *err = NULL; | |
1552 | fde *F = &fd_table[fd]; | |
44db45e8 | 1553 | int len = conn->in.size - conn->in.offset - 1; |
7a2f978b | 1554 | debug(12, 4) ("clientReadRequest: FD %d: reading request...\n", fd); |
1555 | size = read(fd, conn->in.buf + conn->in.offset, len); | |
1556 | fd_bytes(fd, size, FD_READ); | |
44db45e8 | 1557 | /* |
1558 | * Don't reset the timeout value here. The timeout value will be | |
1559 | * set to Config.Timeout.request by httpAccept() and | |
1560 | * clientWriteComplete(), and should apply to the request as a | |
1561 | * whole, not individual read() calls. Plus, it breaks our | |
1562 | * lame half-close detection | |
1563 | */ | |
1564 | commSetSelect(fd, COMM_SELECT_READ, clientReadRequest, conn, 0); | |
7a2f978b | 1565 | if (size == 0) { |
1566 | if (conn->chr == NULL) { | |
1567 | /* no current or pending requests */ | |
1568 | comm_close(fd); | |
1569 | return; | |
1570 | } | |
1571 | /* It might be half-closed, we can't tell */ | |
1572 | debug(12, 5) ("clientReadRequest: FD %d closed?\n", fd); | |
79a15e0a | 1573 | EBIT_SET(F->flags, FD_SOCKET_EOF); |
7a2f978b | 1574 | conn->defer.until = squid_curtime + 1; |
1575 | conn->defer.n++; | |
44db45e8 | 1576 | fd_note(fd, "half-closed"); |
7a2f978b | 1577 | return; |
1578 | } else if (size < 0) { | |
6d3caf23 | 1579 | if (!ignoreErrno(errno)) { |
7a2f978b | 1580 | debug(50, 2) ("clientReadRequest: FD %d: %s\n", fd, xstrerror()); |
1581 | comm_close(fd); | |
ebf4efff | 1582 | return; |
47130615 | 1583 | } else if (conn->in.offset == 0) { |
ebf4efff | 1584 | debug(50, 2) ("clientReadRequest: FD %d: no data to process\n"); |
1585 | return; | |
7a2f978b | 1586 | } |
ebf4efff | 1587 | /* Continue to process previously read data */ |
47130615 | 1588 | size = 0; |
7a2f978b | 1589 | } |
1590 | conn->in.offset += size; | |
1591 | conn->in.buf[conn->in.offset] = '\0'; /* Terminate the string */ | |
7a2f978b | 1592 | while (conn->in.offset > 0) { |
ebf4efff | 1593 | int nrequests; |
1594 | /* Limit the number of concurrent requests to 2 */ | |
1595 | for (H = &conn->chr, nrequests = 0; *H; H = &(*H)->next, nrequests++); | |
1596 | if (nrequests >= 2) { | |
1597 | debug(12, 2) ("clientReadRequest: FD %d max concurrent requests reached\n", fd); | |
1598 | debug(12, 5) ("clientReadRequest: FD %d defering new request until one is done\n", fd); | |
47130615 | 1599 | conn->defer.until = squid_curtime + 100; /* Reset when a request is complete */ |
ebf4efff | 1600 | break; |
1601 | } | |
1602 | /* Process request */ | |
7a2f978b | 1603 | http = parseHttpRequest(conn, |
1604 | &method, | |
1605 | &parser_return_code, | |
1606 | &headers, | |
1607 | &headers_sz); | |
1608 | if (http) { | |
1609 | assert(http->req_sz > 0); | |
1610 | conn->in.offset -= http->req_sz; | |
1611 | assert(conn->in.offset >= 0); | |
6fa92aa2 | 1612 | /* |
1613 | * If we read past the end of this request, move the remaining | |
1614 | * data to the beginning | |
1615 | */ | |
1616 | if (conn->in.offset > 0) | |
a21f5057 | 1617 | memmove(conn->in.buf, conn->in.buf + http->req_sz, conn->in.offset); |
ebf4efff | 1618 | /* add to the client request queue */ |
7a2f978b | 1619 | for (H = &conn->chr; *H; H = &(*H)->next); |
1620 | *H = http; | |
1621 | conn->nrequests++; | |
1622 | commSetTimeout(fd, Config.Timeout.lifetime, NULL, NULL); | |
3775d53c | 1623 | if (parser_return_code < 0) { |
1624 | debug(12, 1) ("clientReadRequest: FD %d Invalid Request\n", fd); | |
1625 | err = errorCon(ERR_INVALID_REQ, HTTP_BAD_REQUEST); | |
1626 | err->request_hdrs = xstrdup(conn->in.buf); | |
1627 | http->entry = clientCreateStoreEntry(http, method, 0); | |
1628 | errorAppendEntry(http->entry, err); | |
1629 | break; | |
1630 | } | |
23d92c64 | 1631 | if ((request = urlParse(method, http->uri)) == NULL) { |
1632 | debug(12, 5) ("Invalid URL: %s\n", http->uri); | |
7a2f978b | 1633 | err = errorCon(ERR_INVALID_URL, HTTP_BAD_REQUEST); |
1634 | err->src_addr = conn->peer.sin_addr; | |
23d92c64 | 1635 | err->url = xstrdup(http->uri); |
7a2f978b | 1636 | http->al.http.code = err->http_status; |
f44af445 | 1637 | http->entry = clientCreateStoreEntry(http, method, 0); |
79e0dc20 | 1638 | errorAppendEntry(http->entry, err); |
7a2f978b | 1639 | safe_free(headers); |
1640 | break; | |
1641 | } | |
23d92c64 | 1642 | safe_free(http->log_uri); |
1643 | http->log_uri = xstrdup(urlCanonicalClean(request)); | |
7a2f978b | 1644 | request->client_addr = conn->peer.sin_addr; |
1645 | request->http_ver = http->http_ver; | |
1646 | request->headers = headers; | |
1647 | request->headers_sz = headers_sz; | |
1648 | if (!urlCheckRequest(request)) { | |
1649 | err = errorCon(ERR_UNSUP_REQ, HTTP_NOT_IMPLEMENTED); | |
1650 | err->src_addr = conn->peer.sin_addr; | |
7a2f978b | 1651 | err->request = requestLink(request); |
1652 | http->al.http.code = err->http_status; | |
f44af445 | 1653 | http->entry = clientCreateStoreEntry(http, request->method, 0); |
79e0dc20 | 1654 | errorAppendEntry(http->entry, err); |
3775d53c | 1655 | break; |
7a2f978b | 1656 | } |
1657 | http->request = requestLink(request); | |
cf26e54c | 1658 | clientAccessCheck(http); |
3775d53c | 1659 | /* |
1660 | * break here for NON-GET because most likely there is a | |
7a2f978b | 1661 | * reqeust body following and we don't want to parse it |
3775d53c | 1662 | * as though it was new request |
1663 | */ | |
7a2f978b | 1664 | if (request->method != METHOD_GET) { |
1665 | if (conn->in.offset) { | |
1666 | request->body_sz = conn->in.offset; | |
1667 | request->body = xmalloc(request->body_sz); | |
1668 | xmemcpy(request->body, conn->in.buf, request->body_sz); | |
1669 | conn->in.offset = 0; | |
1670 | } | |
1671 | break; | |
1672 | } | |
7a2f978b | 1673 | continue; /* while offset > 0 */ |
1674 | } else if (parser_return_code == 0) { | |
1675 | /* | |
1676 | * Partial request received; reschedule until parseHttpRequest() | |
1677 | * is happy with the input | |
1678 | */ | |
1679 | k = conn->in.size - 1 - conn->in.offset; | |
1680 | if (k == 0) { | |
1681 | if (conn->in.offset >= Config.maxRequestSize) { | |
1682 | /* The request is too large to handle */ | |
1683 | debug(12, 0) ("Request won't fit in buffer.\n"); | |
1684 | debug(12, 0) ("Config 'request_size'= %d bytes.\n", | |
1685 | Config.maxRequestSize); | |
1686 | debug(12, 0) ("This request = %d bytes.\n", | |
1687 | conn->in.offset); | |
1688 | err = errorCon(ERR_INVALID_REQ, HTTP_REQUEST_ENTITY_TOO_LARGE); | |
f44af445 | 1689 | http->entry = clientCreateStoreEntry(http, request->method, 0); |
79e0dc20 | 1690 | errorAppendEntry(http->entry, err); |
7a2f978b | 1691 | return; |
1692 | } | |
1693 | /* Grow the request memory area to accomodate for a large request */ | |
1694 | conn->in.size += REQUEST_BUF_SIZE; | |
1695 | conn->in.buf = xrealloc(conn->in.buf, conn->in.size); | |
1696 | meta_data.misc += REQUEST_BUF_SIZE; | |
1697 | debug(12, 2) ("Handling a large request, offset=%d inbufsize=%d\n", | |
1698 | conn->in.offset, conn->in.size); | |
1699 | k = conn->in.size - 1 - conn->in.offset; | |
1700 | } | |
7a2f978b | 1701 | break; |
7a2f978b | 1702 | } |
1703 | } | |
1704 | } | |
1705 | ||
1706 | /* general lifetime handler for HTTP requests */ | |
1707 | static void | |
1708 | requestTimeout(int fd, void *data) | |
1709 | { | |
1710 | ConnStateData *conn = data; | |
1711 | ErrorState *err; | |
1712 | debug(12, 2) ("requestTimeout: FD %d: lifetime is expired.\n", fd); | |
1713 | if (fd_table[fd].rwstate) { | |
79e0dc20 | 1714 | /* |
1715 | * Some data has been sent to the client, just close the FD | |
1716 | */ | |
7a2f978b | 1717 | comm_close(fd); |
1718 | } else if (conn->nrequests) { | |
79e0dc20 | 1719 | /* |
1720 | * assume its a persistent connection; just close it | |
1721 | */ | |
7a2f978b | 1722 | comm_close(fd); |
1723 | } else { | |
79e0dc20 | 1724 | /* |
1725 | * Generate an error | |
1726 | */ | |
7a2f978b | 1727 | err = errorCon(ERR_LIFETIME_EXP, HTTP_REQUEST_TIMEOUT); |
7a2f978b | 1728 | err->url = xstrdup("N/A"); |
79e0dc20 | 1729 | /* |
1730 | * Normally we shouldn't call errorSend() in client_side.c, but | |
1731 | * it should be okay in this case. Presumably if we get here | |
1732 | * this is the first request for the connection, and no data | |
1733 | * has been written yet | |
1734 | */ | |
1735 | assert(conn->chr == NULL); | |
7a2f978b | 1736 | errorSend(fd, err); |
79e0dc20 | 1737 | /* |
1738 | * if we don't close() here, we still need a timeout handler! | |
1739 | */ | |
7a2f978b | 1740 | commSetTimeout(fd, 30, requestTimeout, conn); |
1741 | } | |
1742 | } | |
1743 | ||
1744 | int | |
79d39a72 | 1745 | httpAcceptDefer(int fdnotused, void *notused) |
7a2f978b | 1746 | { |
1747 | return !fdstat_are_n_free_fd(RESERVED_FD); | |
1748 | } | |
1749 | ||
bf8e5903 | 1750 | /* Handle a new connection on HTTP socket. */ |
7a2f978b | 1751 | void |
1752 | httpAccept(int sock, void *notused) | |
1753 | { | |
1754 | int fd = -1; | |
1755 | ConnStateData *connState = NULL; | |
1756 | struct sockaddr_in peer; | |
1757 | struct sockaddr_in me; | |
1758 | memset(&peer, '\0', sizeof(struct sockaddr_in)); | |
1759 | memset(&me, '\0', sizeof(struct sockaddr_in)); | |
1760 | commSetSelect(sock, COMM_SELECT_READ, httpAccept, NULL, 0); | |
1761 | if ((fd = comm_accept(sock, &peer, &me)) < 0) { | |
1762 | debug(50, 1) ("httpAccept: FD %d: accept failure: %s\n", | |
1763 | sock, xstrerror()); | |
1764 | return; | |
1765 | } | |
7a2f978b | 1766 | debug(12, 4) ("httpAccept: FD %d: accepted\n", fd); |
1767 | connState = xcalloc(1, sizeof(ConnStateData)); | |
1768 | connState->peer = peer; | |
1769 | connState->log_addr = peer.sin_addr; | |
1770 | connState->log_addr.s_addr &= Config.Addrs.client_netmask.s_addr; | |
1771 | connState->me = me; | |
1772 | connState->fd = fd; | |
1773 | connState->ident.fd = -1; | |
1774 | connState->in.size = REQUEST_BUF_SIZE; | |
1775 | connState->in.buf = xcalloc(connState->in.size, 1); | |
3f6c0fb2 | 1776 | cbdataAdd(connState, MEM_NONE); |
7a2f978b | 1777 | meta_data.misc += connState->in.size; |
1778 | comm_add_close_handler(fd, connStateFree, connState); | |
1779 | if (Config.onoff.log_fqdn) | |
1780 | fqdncache_gethostbyaddr(peer.sin_addr, FQDN_LOOKUP_IF_MISS); | |
1781 | commSetTimeout(fd, Config.Timeout.request, requestTimeout, connState); | |
1782 | commSetSelect(fd, COMM_SELECT_READ, clientReadRequest, connState, 0); | |
1783 | commSetDefer(fd, clientReadDefer, connState); | |
1784 | } | |
1785 | ||
1786 | void | |
1787 | AppendUdp(icpUdpData * item) | |
1788 | { | |
1789 | item->next = NULL; | |
1790 | if (UdpQueueHead == NULL) { | |
1791 | UdpQueueHead = item; | |
1792 | UdpQueueTail = item; | |
1793 | } else if (UdpQueueTail == UdpQueueHead) { | |
1794 | UdpQueueTail = item; | |
1795 | UdpQueueHead->next = item; | |
1796 | } else { | |
1797 | UdpQueueTail->next = item; | |
1798 | UdpQueueTail = item; | |
1799 | } | |
1800 | } | |
1801 | ||
1802 | /* return 1 if the request should be aborted */ | |
1803 | static int | |
1804 | CheckQuickAbort2(const clientHttpRequest * http) | |
1805 | { | |
1806 | long curlen; | |
1807 | long minlen; | |
1808 | long expectlen; | |
1809 | ||
79a15e0a | 1810 | if (!EBIT_TEST(http->request->flags, REQ_CACHABLE)) |
7a2f978b | 1811 | return 1; |
79a15e0a | 1812 | if (EBIT_TEST(http->entry->flag, KEY_PRIVATE)) |
7a2f978b | 1813 | return 1; |
1814 | if (http->entry->mem_obj == NULL) | |
1815 | return 1; | |
1816 | expectlen = http->entry->mem_obj->reply->content_length; | |
1817 | curlen = http->entry->mem_obj->inmem_hi; | |
1818 | minlen = Config.quickAbort.min; | |
1819 | if (minlen < 0) | |
1820 | /* disabled */ | |
1821 | return 0; | |
1822 | if (curlen > expectlen) | |
1823 | /* bad content length */ | |
1824 | return 1; | |
1825 | if ((expectlen - curlen) < minlen) | |
1826 | /* only little more left */ | |
1827 | return 0; | |
1828 | if ((expectlen - curlen) > Config.quickAbort.max) | |
1829 | /* too much left to go */ | |
1830 | return 1; | |
1831 | if ((curlen / (expectlen / 128U)) > Config.quickAbort.pct) | |
1832 | /* past point of no return */ | |
1833 | return 0; | |
1834 | return 1; | |
1835 | } | |
1836 | ||
1837 | ||
1838 | static void | |
1839 | CheckQuickAbort(clientHttpRequest * http) | |
1840 | { | |
1841 | StoreEntry *entry = http->entry; | |
1842 | /* Note, set entry here because http->entry might get changed (for IMS | |
1843 | * requests) during the storeAbort() call */ | |
1844 | if (entry == NULL) | |
1845 | return; | |
1846 | if (storePendingNClients(entry) > 1) | |
1847 | return; | |
1848 | if (entry->store_status != STORE_PENDING) | |
1849 | return; | |
1850 | if (CheckQuickAbort2(http) == 0) | |
1851 | return; | |
1852 | debug(12, 3) ("CheckQuickAbort: ABORTING %s\n", storeUrl(entry)); | |
1853 | storeAbort(entry, 1); | |
1854 | } | |
1855 | ||
978e455f | 1856 | #define SENDING_BODY 0 |
1857 | #define SENDING_HDRSONLY 1 | |
7a2f978b | 1858 | static int |
1b02b5be | 1859 | clientCheckTransferDone(clientHttpRequest * http) |
7a2f978b | 1860 | { |
978e455f | 1861 | int sending = SENDING_BODY; |
7a2f978b | 1862 | StoreEntry *entry = http->entry; |
978e455f | 1863 | MemObject *mem; |
1864 | http_reply *reply; | |
1865 | int sendlen; | |
7a2f978b | 1866 | if (entry == NULL) |
1867 | return 0; | |
978e455f | 1868 | /* |
1869 | * Handle STORE_OK and STORE_ABORTED objects. | |
1870 | * entry->object_len will be set proprely. | |
1871 | */ | |
1872 | if (entry->store_status != STORE_PENDING) { | |
7a2f978b | 1873 | if (http->out.offset >= entry->object_len) |
1874 | return 1; | |
513f05a6 | 1875 | else |
1876 | return 0; | |
1877 | } | |
978e455f | 1878 | /* |
1879 | * Now, handle STORE_PENDING objects | |
1880 | */ | |
1881 | mem = entry->mem_obj; | |
1882 | assert(mem != NULL); | |
1883 | assert(http->request != NULL); | |
1884 | reply = mem->reply; | |
1885 | if (reply->hdr_sz == 0) | |
b34ed725 | 1886 | return 0; /* haven't found end of headers yet */ |
978e455f | 1887 | else if (reply->code == HTTP_OK) |
b34ed725 | 1888 | sending = SENDING_BODY; |
978e455f | 1889 | else if (reply->code == HTTP_NO_CONTENT) |
b34ed725 | 1890 | sending = SENDING_HDRSONLY; |
978e455f | 1891 | else if (reply->code == HTTP_NOT_MODIFIED) |
b34ed725 | 1892 | sending = SENDING_HDRSONLY; |
a3c60429 | 1893 | else if (reply->code < HTTP_OK) |
1894 | sending = SENDING_HDRSONLY; | |
978e455f | 1895 | else if (http->request->method == METHOD_HEAD) |
b34ed725 | 1896 | sending = SENDING_HDRSONLY; |
978e455f | 1897 | else |
1898 | sending = SENDING_BODY; | |
1899 | /* | |
1900 | * Figure out how much data we are supposed to send. | |
1901 | * If we are sending a body and we don't have a content-length, | |
1902 | * then we must wait for the object to become STORE_OK or | |
1903 | * STORE_ABORTED. | |
1904 | */ | |
1905 | if (sending == SENDING_HDRSONLY) | |
1906 | sendlen = reply->hdr_sz; | |
1907 | else if (reply->content_length < 0) | |
1908 | return 0; | |
1909 | else | |
1910 | sendlen = reply->content_length + reply->hdr_sz; | |
1911 | /* | |
1912 | * Now that we have the expected length, did we send it all? | |
1913 | */ | |
1914 | if (http->out.offset < sendlen) | |
1915 | return 0; | |
1916 | else | |
b34ed725 | 1917 | return 1; |
7a2f978b | 1918 | } |
1919 | ||
1920 | static char * | |
1b02b5be | 1921 | clientConstruct304reply(struct _http_reply *source) |
7a2f978b | 1922 | { |
1923 | LOCAL_ARRAY(char, line, 256); | |
1924 | LOCAL_ARRAY(char, reply, 8192); | |
7a2f978b | 1925 | memset(reply, '\0', 8192); |
1926 | strcpy(reply, "HTTP/1.0 304 Not Modified\r\n"); | |
1927 | if (source->date > -1) { | |
1928 | snprintf(line, 256, "Date: %s\r\n", mkrfc1123(source->date)); | |
1929 | strcat(reply, line); | |
1930 | } | |
1931 | if ((int) strlen(source->content_type) > 0) { | |
1932 | snprintf(line, 256, "Content-type: %s\r\n", source->content_type); | |
1933 | strcat(reply, line); | |
1934 | } | |
1935 | if (source->content_length) { | |
1936 | snprintf(line, 256, "Content-length: %d\r\n", source->content_length); | |
1937 | strcat(reply, line); | |
1938 | } | |
1939 | if (source->expires > -1) { | |
1940 | snprintf(line, 256, "Expires: %s\r\n", mkrfc1123(source->expires)); | |
1941 | strcat(reply, line); | |
1942 | } | |
1943 | if (source->last_modified > -1) { | |
1944 | snprintf(line, 256, "Last-modified: %s\r\n", | |
1945 | mkrfc1123(source->last_modified)); | |
1946 | strcat(reply, line); | |
1947 | } | |
1948 | strcat(reply, "\r\n"); | |
1949 | return reply; | |
1950 | } | |
1951 | ||
1952 | /* | |
1953 | * This function is designed to serve a fairly specific purpose. | |
1954 | * Occasionally our vBNS-connected caches can talk to each other, but not | |
1955 | * the rest of the world. Here we try to detect frequent failures which | |
1956 | * make the cache unusable (e.g. DNS lookup and connect() failures). If | |
1957 | * the failure:success ratio goes above 1.0 then we go into "hit only" | |
1958 | * mode where we only return UDP_HIT or UDP_MISS_NOFETCH. Neighbors | |
1959 | * will only fetch HITs from us if they are using the ICP protocol. We | |
1960 | * stay in this mode for 5 minutes. | |
1961 | * | |
1962 | * Duane W., Sept 16, 1996 | |
1963 | */ | |
1964 | ||
1965 | static void | |
88aad2e5 | 1966 | checkFailureRatio(err_type etype, hier_code hcode) |
7a2f978b | 1967 | { |
88aad2e5 | 1968 | static double magic_factor = 100.0; |
7a2f978b | 1969 | double n_good; |
1970 | double n_bad; | |
1971 | if (hcode == HIER_NONE) | |
1972 | return; | |
88aad2e5 | 1973 | n_good = magic_factor / (1.0 + request_failure_ratio); |
7a2f978b | 1974 | n_bad = magic_factor - n_good; |
88aad2e5 | 1975 | switch (etype) { |
7a2f978b | 1976 | case ERR_DNS_FAIL: |
1977 | case ERR_CONNECT_FAIL: | |
1978 | case ERR_READ_ERROR: | |
1979 | n_bad++; | |
1980 | break; | |
1981 | default: | |
1982 | n_good++; | |
1983 | } | |
88aad2e5 | 1984 | request_failure_ratio = n_bad / n_good; |
7a2f978b | 1985 | if (hit_only_mode_until > squid_curtime) |
1986 | return; | |
88aad2e5 | 1987 | if (request_failure_ratio < 1.0) |
7a2f978b | 1988 | return; |
88aad2e5 | 1989 | debug(12, 0) ("Failure Ratio at %4.2f\n", request_failure_ratio); |
7a2f978b | 1990 | debug(12, 0) ("Going into hit-only-mode for %d minutes...\n", |
1991 | FAILURE_MODE_TIME / 60); | |
1992 | hit_only_mode_until = squid_curtime + FAILURE_MODE_TIME; | |
88aad2e5 | 1993 | request_failure_ratio = 0.8; /* reset to something less than 1.0 */ |
7a2f978b | 1994 | } |
15df8349 | 1995 | |
1996 | void | |
1997 | clientHttpConnectionsOpen(void) | |
1998 | { | |
1999 | ushortlist *u; | |
2000 | int fd; | |
15df8349 | 2001 | for (u = Config.Port.http; u; u = u->next) { |
8daca701 | 2002 | enter_suid(); |
2003 | fd = comm_open(SOCK_STREAM, | |
2004 | 0, | |
2005 | Config.Addrs.tcp_incoming, | |
2006 | u->i, | |
2007 | COMM_NONBLOCKING, | |
2008 | "HTTP Socket"); | |
2009 | leave_suid(); | |
2010 | if (fd < 0) | |
2011 | continue; | |
2012 | comm_listen(fd); | |
2013 | commSetSelect(fd, COMM_SELECT_READ, httpAccept, NULL, 0); | |
2014 | commSetDefer(fd, httpAcceptDefer, NULL); | |
2015 | debug(1, 1) ("Accepting HTTP connections on port %d, FD %d.\n", | |
2016 | (int) u->i, fd); | |
2017 | HttpSockets[NHttpSockets++] = fd; | |
15df8349 | 2018 | } |
2019 | if (NHttpSockets < 1) | |
8daca701 | 2020 | fatal("Cannot open HTTP Port"); |
15df8349 | 2021 | } |
c0fbae16 | 2022 | |
ab013258 | 2023 | int |
2024 | handleConnectionHeader(int flag, char *where, char *what) | |
2025 | { | |
2026 | char *t, *p, *wh; | |
2027 | int i; | |
2028 | LOCAL_ARRAY(char, mbuf, 256); | |
2029 | ||
2030 | if (flag) { /* lookup mode */ | |
2031 | if (where[0] == '\0' || what[0] == '\0') | |
2032 | return 0; | |
2033 | p = xstrdup(what); | |
2034 | t = strtok(p, ":"); | |
2035 | if (t == NULL) | |
2036 | return 0; | |
2037 | debug(20, 3) ("handleConnectionHeader: %s\n AND %s (%p)\n", where, t, p); | |
2038 | i = strstr(where, t) ? 1 : 0; | |
2039 | xfree(p); | |
2040 | return (i); | |
2041 | } | |
2042 | where[0] = '\0'; | |
2043 | wh = xstrdup(what); | |
2044 | t = strtok(wh, ","); | |
2045 | while (t != NULL) { | |
2046 | ||
2047 | #ifdef BE_PARANOID | |
2048 | static char no_conn[] = "Expires:Host:Content-length:Content-type:"; | |
2049 | ||
2050 | if (handleConnectionHeader(1, no_conn, t)) { | |
2051 | debug(1, 1) ("handleConnectionHeader: problematic header %s\n", t); | |
2052 | t = strtok(NULL, ",\n"); | |
2053 | continue; | |
2054 | } | |
2055 | #endif | |
2056 | if ((p = strchr(t, ':'))) | |
2057 | xstrncpy(mbuf, t, p - t + 1); | |
2058 | else | |
2059 | snprintf(mbuf, 256, "%s:", t); | |
2060 | strcat(where, mbuf); | |
2061 | t = strtok(NULL, ",\n"); | |
2062 | } | |
2063 | debug(20, 3) ("handleConnectionHeader: we have %s\n", where); | |
2064 | xfree(wh); | |
2065 | return 1; | |
2066 | } | |
2067 | ||
c0fbae16 | 2068 | void |
2069 | clientHttpConnectionsClose(void) | |
2070 | { | |
2071 | int i; | |
2072 | for (i = 0; i < NHttpSockets; i++) { | |
2073 | if (HttpSockets[i] >= 0) { | |
2074 | debug(1, 1) ("FD %d Closing HTTP connection\n", HttpSockets[i]); | |
2075 | comm_close(HttpSockets[i]); | |
2076 | HttpSockets[i] = -1; | |
2077 | } | |
2078 | } | |
2079 | NHttpSockets = 0; | |
2080 | } |