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99edd1c3 | 1 | |
2 | /* | |
cc192b50 | 3 | * $Id: HttpRequest.cc,v 1.78 2007/12/14 23:11:45 amosjeffries Exp $ |
99edd1c3 | 4 | * |
5 | * DEBUG: section 73 HTTP Request | |
6 | * AUTHOR: Duane Wessels | |
7 | * | |
2b6662ba | 8 | * SQUID Web Proxy Cache http://www.squid-cache.org/ |
e25c139f | 9 | * ---------------------------------------------------------- |
99edd1c3 | 10 | * |
2b6662ba | 11 | * Squid is the result of efforts by numerous individuals from |
12 | * the Internet community; see the CONTRIBUTORS file for full | |
13 | * details. Many organizations have provided support for Squid's | |
14 | * development; see the SPONSORS file for full details. Squid is | |
15 | * Copyrighted (C) 2001 by the Regents of the University of | |
16 | * California; see the COPYRIGHT file for full details. Squid | |
17 | * incorporates software developed and/or copyrighted by other | |
18 | * sources; see the CREDITS file for full details. | |
99edd1c3 | 19 | * |
20 | * This program is free software; you can redistribute it and/or modify | |
21 | * it under the terms of the GNU General Public License as published by | |
22 | * the Free Software Foundation; either version 2 of the License, or | |
23 | * (at your option) any later version. | |
24 | * | |
25 | * This program is distributed in the hope that it will be useful, | |
26 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
27 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
28 | * GNU General Public License for more details. | |
29 | * | |
30 | * You should have received a copy of the GNU General Public License | |
31 | * along with this program; if not, write to the Free Software | |
cbdec147 | 32 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
e25c139f | 33 | * |
51ee7c82 | 34 | * Copyright (c) 2003, Robert Collins <robertc@squid-cache.org> |
99edd1c3 | 35 | */ |
36 | ||
37 | #include "squid.h" | |
8596962e | 38 | #include "HttpRequest.h" |
f5691f9c | 39 | #include "AuthUserRequest.h" |
528b2c61 | 40 | #include "HttpHeaderRange.h" |
0eb49b6d | 41 | #include "MemBuf.h" |
25b6a907 | 42 | #include "Store.h" |
528b2c61 | 43 | |
4a56ee8d | 44 | HttpRequest::HttpRequest() : HttpMsg(hoRequest) |
75faaa7a | 45 | { |
5cafad19 | 46 | init(); |
47 | } | |
48 | ||
4a56ee8d | 49 | HttpRequest::HttpRequest(method_t aMethod, protocol_t aProtocol, const char *aUrlpath) : HttpMsg(hoRequest) |
5cafad19 | 50 | { |
51 | init(); | |
0e8aad88 | 52 | initHTTP(aMethod, aProtocol, aUrlpath); |
5cafad19 | 53 | } |
54 | ||
55 | HttpRequest::~HttpRequest() | |
56 | { | |
5cafad19 | 57 | clean(); |
58 | } | |
59 | ||
60 | void | |
0e8aad88 | 61 | HttpRequest::initHTTP(method_t aMethod, protocol_t aProtocol, const char *aUrlpath) |
5cafad19 | 62 | { |
63 | method = aMethod; | |
64 | protocol = aProtocol; | |
65 | urlpath = aUrlpath; | |
66 | } | |
67 | ||
68 | void | |
69 | HttpRequest::init() | |
70 | { | |
a3f28359 | 71 | method = METHOD_NONE; |
5cafad19 | 72 | protocol = PROTO_NONE; |
30abd221 | 73 | urlpath = NULL; |
a3f28359 | 74 | login[0] = '\0'; |
75 | host[0] = '\0'; | |
76 | auth_user_request = NULL; | |
77 | port = 0; | |
78 | canonical = NULL; | |
a3f28359 | 79 | memset(&flags, '\0', sizeof(flags)); |
80 | range = NULL; | |
81 | ims = -1; | |
82 | imslen = 0; | |
5cafad19 | 83 | lastmod = -1; |
84 | max_forwards = -1; | |
cc192b50 | 85 | client_addr.SetEmpty(); |
86 | my_addr.SetEmpty(); | |
5f8252d2 | 87 | body_pipe = NULL; |
a3f28359 | 88 | // hier |
89 | errType = ERR_NONE; | |
5cafad19 | 90 | peer_login = NULL; // not allocated/deallocated by this class |
91 | peer_domain = NULL; // not allocated/deallocated by this class | |
a3f28359 | 92 | vary_headers = NULL; |
5cafad19 | 93 | tag = null_string; |
94 | extacl_user = null_string; | |
95 | extacl_passwd = null_string; | |
96 | extacl_log = null_string; | |
c99de607 | 97 | pstate = psReadyToParseStartLine; |
8596962e | 98 | } |
99 | ||
99edd1c3 | 100 | void |
5cafad19 | 101 | HttpRequest::clean() |
99edd1c3 | 102 | { |
5f8252d2 | 103 | // we used to assert that the pipe is NULL, but now the request only |
104 | // points to a pipe that is owned and initiated by another object. | |
105 | body_pipe = NULL; | |
62e76326 | 106 | |
4f0ef8e8 | 107 | AUTHUSERREQUESTUNLOCK(auth_user_request, "request"); |
62e76326 | 108 | |
8596962e | 109 | safe_free(canonical); |
62e76326 | 110 | |
8596962e | 111 | safe_free(vary_headers); |
62e76326 | 112 | |
30abd221 | 113 | urlpath.clean(); |
62e76326 | 114 | |
519e0948 | 115 | header.clean(); |
62e76326 | 116 | |
07947ad8 | 117 | if (cache_control) { |
8596962e | 118 | httpHdrCcDestroy(cache_control); |
07947ad8 | 119 | cache_control = NULL; |
120 | } | |
62e76326 | 121 | |
5cafad19 | 122 | if (range) { |
8596962e | 123 | delete range; |
5cafad19 | 124 | range = NULL; |
125 | } | |
62e76326 | 126 | |
30abd221 | 127 | tag.clean(); |
abb929f0 | 128 | |
30abd221 | 129 | extacl_user.clean(); |
abb929f0 | 130 | |
30abd221 | 131 | extacl_passwd.clean(); |
abb929f0 | 132 | |
30abd221 | 133 | extacl_log.clean(); |
8596962e | 134 | } |
4a972fa2 | 135 | |
5cafad19 | 136 | void |
137 | HttpRequest::reset() | |
138 | { | |
139 | clean(); | |
140 | init(); | |
141 | } | |
142 | ||
c21ad0f5 | 143 | bool |
144 | HttpRequest::sanityCheckStartLine(MemBuf *buf, http_status *error) | |
8596962e | 145 | { |
146 | /* | |
147 | * Just see if the request buffer starts with a known | |
148 | * HTTP request method. NOTE this whole function is somewhat | |
149 | * superfluous and could just go away. | |
150 | */ | |
151 | ||
985c86bc | 152 | if (METHOD_NONE == HttpRequestMethod(buf->content())) { |
bf8fe701 | 153 | debugs(73, 3, "HttpRequest::sanityCheckStartLine: did not find HTTP request method"); |
8596962e | 154 | return false; |
155 | } | |
156 | ||
157 | return true; | |
158 | } | |
159 | ||
c21ad0f5 | 160 | bool |
161 | HttpRequest::parseFirstLine(const char *start, const char *end) | |
8596962e | 162 | { |
863d85ee | 163 | const char *t = start + strcspn(start, w_space); |
985c86bc | 164 | method = HttpRequestMethod(start, t); |
863d85ee | 165 | |
166 | if (METHOD_NONE == method) | |
167 | return false; | |
168 | ||
169 | start = t + strspn(t, w_space); | |
170 | ||
171 | const char *ver = findTrailingHTTPVersion(start, end); | |
172 | ||
173 | if (ver) { | |
174 | end = ver - 1; | |
175 | ||
176 | while (xisspace(*end)) // find prev non-space | |
177 | end--; | |
178 | ||
179 | end++; // back to space | |
180 | ||
181 | if (2 != sscanf(ver + 5, "%d.%d", &http_ver.major, &http_ver.minor)) { | |
bf8fe701 | 182 | debugs(73, 1, "parseRequestLine: Invalid HTTP identifier."); |
863d85ee | 183 | return false; |
184 | } | |
185 | } else { | |
186 | http_ver.major = 0; | |
187 | http_ver.minor = 9; | |
188 | } | |
189 | ||
190 | if (end < start) // missing URI | |
191 | return false; | |
192 | ||
193 | char save = *end; | |
194 | ||
195 | * (char *) end = '\0'; // temp terminate URI, XXX dangerous? | |
196 | ||
197 | HttpRequest *tmp = urlParse(method, (char *) start, this); | |
198 | ||
199 | * (char *) end = save; | |
200 | ||
201 | if (NULL == tmp) | |
202 | return false; | |
203 | ||
204 | return true; | |
99edd1c3 | 205 | } |
206 | ||
99edd1c3 | 207 | int |
666f514b | 208 | HttpRequest::parseHeader(const char *parse_start, int len) |
99edd1c3 | 209 | { |
210 | const char *blk_start, *blk_end; | |
62e76326 | 211 | |
666f514b | 212 | if (!httpMsgIsolateHeaders(&parse_start, len, &blk_start, &blk_end)) |
62e76326 | 213 | return 0; |
214 | ||
a9925b40 | 215 | int result = header.parse(blk_start, blk_end); |
62e76326 | 216 | |
528b2c61 | 217 | if (result) |
07947ad8 | 218 | hdrCacheInit(); |
62e76326 | 219 | |
528b2c61 | 220 | return result; |
99edd1c3 | 221 | } |
222 | ||
a00a7c85 | 223 | /* swaps out request using httpRequestPack */ |
99edd1c3 | 224 | void |
5cafad19 | 225 | HttpRequest::swapOut(StoreEntry * e) |
99edd1c3 | 226 | { |
a00a7c85 | 227 | Packer p; |
5cafad19 | 228 | assert(e); |
a00a7c85 | 229 | packerToStoreInit(&p, e); |
5cafad19 | 230 | pack(&p); |
a00a7c85 | 231 | packerClean(&p); |
232 | } | |
233 | ||
234 | /* packs request-line and headers, appends <crlf> terminator */ | |
235 | void | |
5cafad19 | 236 | HttpRequest::pack(Packer * p) |
a00a7c85 | 237 | { |
5cafad19 | 238 | assert(p); |
a00a7c85 | 239 | /* pack request-line */ |
240 | packerPrintf(p, "%s %s HTTP/1.0\r\n", | |
30abd221 | 241 | RequestMethodStr[method], urlpath.buf()); |
a00a7c85 | 242 | /* headers */ |
a9925b40 | 243 | header.packInto(p); |
2246b732 | 244 | /* trailer */ |
a00a7c85 | 245 | packerAppend(p, "\r\n", 2); |
2246b732 | 246 | } |
247 | ||
5cafad19 | 248 | /* |
249 | * A wrapper for debugObj() | |
250 | */ | |
2246b732 | 251 | void |
5cafad19 | 252 | httpRequestPack(void *obj, Packer *p) |
2246b732 | 253 | { |
5cafad19 | 254 | HttpRequest *request = static_cast<HttpRequest*>(obj); |
255 | request->pack(p); | |
99edd1c3 | 256 | } |
eeb423fb | 257 | |
2246b732 | 258 | /* returns the length of request line + headers + crlf */ |
259 | int | |
5cafad19 | 260 | HttpRequest::prefixLen() |
2246b732 | 261 | { |
5cafad19 | 262 | return strlen(RequestMethodStr[method]) + 1 + |
263 | urlpath.size() + 1 + | |
62e76326 | 264 | 4 + 1 + 3 + 2 + |
5cafad19 | 265 | header.len + 2; |
2246b732 | 266 | } |
99edd1c3 | 267 | |
6bccf575 | 268 | /* |
269 | * Returns true if HTTP allows us to pass this header on. Does not | |
270 | * check anonymizer (aka header_access) configuration. | |
271 | */ | |
99edd1c3 | 272 | int |
30abd221 | 273 | httpRequestHdrAllowed(const HttpHeaderEntry * e, String * strConn) |
99edd1c3 | 274 | { |
275 | assert(e); | |
97474590 | 276 | /* check connection header */ |
62e76326 | 277 | |
30abd221 | 278 | if (strConn && strListIsMember(strConn, e->name.buf(), ',')) |
62e76326 | 279 | return 0; |
280 | ||
99edd1c3 | 281 | return 1; |
282 | } | |
e429f975 | 283 | |
190154cf | 284 | /* sync this routine when you update HttpRequest struct */ |
8596962e | 285 | void |
07947ad8 | 286 | HttpRequest::hdrCacheInit() |
528b2c61 | 287 | { |
07947ad8 | 288 | HttpMsg::hdrCacheInit(); |
62e76326 | 289 | |
a9925b40 | 290 | range = header.getRange(); |
528b2c61 | 291 | } |
292 | ||
e429f975 | 293 | /* request_flags */ |
294 | bool | |
295 | request_flags::resetTCP() const | |
296 | { | |
297 | return reset_tcp != 0; | |
298 | } | |
299 | ||
300 | void | |
301 | request_flags::setResetTCP() | |
302 | { | |
bf8fe701 | 303 | debugs(73, 9, "request_flags::setResetTCP"); |
e429f975 | 304 | reset_tcp = 1; |
305 | } | |
306 | ||
307 | void | |
308 | request_flags::clearResetTCP() | |
309 | { | |
bf8fe701 | 310 | debugs(73, 9, "request_flags::clearResetTCP"); |
e429f975 | 311 | reset_tcp = 0; |
312 | } | |
528b2c61 | 313 | |
314 | bool | |
190154cf | 315 | HttpRequest::multipartRangeRequest() const |
528b2c61 | 316 | { |
317 | return (range && range->specs.count > 1); | |
318 | } | |
8000a965 | 319 | |
320 | void | |
321 | request_flags::destinationIPLookupCompleted() | |
322 | { | |
323 | destinationIPLookedUp_ = true; | |
324 | } | |
325 | ||
326 | bool | |
327 | request_flags::destinationIPLookedUp() const | |
328 | { | |
329 | return destinationIPLookedUp_; | |
330 | } | |
8596962e | 331 | |
5f8252d2 | 332 | request_flags |
333 | request_flags::cloneAdaptationImmune() const | |
334 | { | |
335 | // At the time of writing, all flags where either safe to copy after | |
336 | // adaptation or were not set at the time of the adaptation. If there | |
337 | // are flags that are different, they should be cleared in the clone. | |
338 | return *this; | |
339 | } | |
340 | ||
58217e94 | 341 | bool |
342 | HttpRequest::bodyNibbled() const { | |
343 | return body_pipe != NULL && body_pipe->consumedSize() > 0; | |
344 | } | |
5f8252d2 | 345 | |
8596962e | 346 | const char *HttpRequest::packableURI(bool full_uri) const |
347 | { | |
348 | if (full_uri) | |
349 | return urlCanonical((HttpRequest*)this); | |
350 | ||
351 | if (urlpath.size()) | |
30abd221 | 352 | return urlpath.buf(); |
8596962e | 353 | |
354 | return "/"; | |
355 | } | |
356 | ||
357 | void HttpRequest::packFirstLineInto(Packer * p, bool full_uri) const | |
358 | { | |
359 | // form HTTP request-line | |
360 | packerPrintf(p, "%s %s HTTP/%d.%d\r\n", | |
361 | RequestMethodStr[method], | |
362 | packableURI(full_uri), | |
363 | http_ver.major, http_ver.minor); | |
364 | } | |
8ddea643 | 365 | |
366 | /* | |
367 | * Indicate whether or not we would usually expect an entity-body | |
368 | * along with this request | |
369 | */ | |
370 | bool | |
47f6e231 | 371 | HttpRequest::expectingBody(method_t unused, int64_t& theSize) const |
8ddea643 | 372 | { |
373 | bool expectBody = false; | |
374 | ||
375 | /* | |
376 | * GET and HEAD don't usually have bodies, but we should be prepared | |
377 | * to accept one if the request_entities directive is set | |
378 | */ | |
379 | ||
380 | if (method == METHOD_GET || method == METHOD_HEAD) | |
381 | expectBody = Config.onoff.request_entities ? true : false; | |
382 | else if (method == METHOD_PUT || method == METHOD_POST) | |
383 | expectBody = true; | |
a9925b40 | 384 | else if (header.hasListMember(HDR_TRANSFER_ENCODING, "chunked", ',')) |
8ddea643 | 385 | expectBody = true; |
386 | else if (content_length >= 0) | |
387 | expectBody = true; | |
388 | else | |
389 | expectBody = false; | |
390 | ||
391 | if (expectBody) { | |
a9925b40 | 392 | if (header.hasListMember(HDR_TRANSFER_ENCODING, "chunked", ',')) |
8ddea643 | 393 | theSize = -1; |
394 | else if (content_length >= 0) | |
395 | theSize = content_length; | |
396 | else | |
397 | theSize = -1; | |
398 | } | |
399 | ||
400 | return expectBody; | |
401 | } | |
c21ad0f5 | 402 | |
403 | /* | |
404 | * Create a Request from a URL and METHOD. | |
405 | * | |
406 | * If the METHOD is CONNECT, then a host:port pair is looked for instead of a URL. | |
407 | * If the request cannot be created cleanly, NULL is returned | |
408 | */ | |
409 | HttpRequest * | |
410 | HttpRequest::CreateFromUrlAndMethod(char * url, method_t method) | |
411 | { | |
412 | return urlParse(method, url, NULL); | |
413 | } | |
414 | ||
415 | /* | |
416 | * Create a Request from a URL. | |
417 | * | |
418 | * If the request cannot be created cleanly, NULL is returned | |
419 | */ | |
420 | HttpRequest * | |
421 | HttpRequest::CreateFromUrl(char * url) | |
422 | { | |
423 | return urlParse(METHOD_GET, url, NULL); | |
424 | } | |
610ee341 | 425 | |
426 | /* | |
427 | * Are responses to this request possible cacheable ? | |
428 | * If false then no matter what the response must not be cached. | |
429 | */ | |
430 | bool | |
431 | HttpRequest::cacheable() const | |
432 | { | |
433 | if (protocol == PROTO_HTTP) | |
434 | return httpCachable(method); | |
435 | ||
610ee341 | 436 | /* |
437 | * The below looks questionable: what non HTTP protocols use connect, | |
438 | * trace, put and post? RC | |
439 | */ | |
440 | if (method == METHOD_CONNECT) | |
441 | return 0; | |
442 | ||
443 | if (method == METHOD_TRACE) | |
444 | return 0; | |
445 | ||
446 | if (method == METHOD_PUT) | |
447 | return 0; | |
448 | ||
449 | if (method == METHOD_POST) | |
450 | return 0; | |
451 | ||
452 | /* | |
453 | * XXX POST may be cached sometimes.. ignored | |
454 | * for now | |
455 | */ | |
456 | if (protocol == PROTO_GOPHER) | |
457 | return gopherCachable(this); | |
458 | ||
459 | if (protocol == PROTO_CACHEOBJ) | |
460 | return 0; | |
461 | ||
462 | return 1; | |
463 | } |