0
|
1
|
|
2 /*
|
|
3 * Copyright (C) Igor Sysoev
|
|
4 */
|
|
5
|
|
6
|
|
7 #include <ngx_config.h>
|
|
8 #include <ngx_core.h>
|
|
9 #include <ngx_http.h>
|
|
10
|
|
11
|
|
12 ngx_int_t ngx_http_parse_request_line(ngx_http_request_t *r, ngx_buf_t *b)
|
|
13 {
|
|
14 u_char ch, *p, *m;
|
|
15 enum {
|
|
16 sw_start = 0,
|
|
17 sw_method,
|
|
18 sw_space_after_method,
|
|
19 sw_spaces_before_uri,
|
|
20 sw_schema,
|
|
21 sw_schema_slash,
|
|
22 sw_schema_slash_slash,
|
|
23 sw_host,
|
|
24 sw_port,
|
|
25 sw_after_slash_in_uri,
|
|
26 sw_check_uri,
|
|
27 sw_uri,
|
|
28 sw_http_09,
|
|
29 sw_http_H,
|
|
30 sw_http_HT,
|
|
31 sw_http_HTT,
|
|
32 sw_http_HTTP,
|
|
33 sw_first_major_digit,
|
|
34 sw_major_digit,
|
|
35 sw_first_minor_digit,
|
|
36 sw_minor_digit,
|
|
37 sw_almost_done,
|
|
38 sw_done
|
|
39 } state;
|
|
40
|
|
41 state = r->state;
|
|
42 p = b->pos;
|
|
43
|
|
44 while (p < b->last && state < sw_done) {
|
|
45 ch = *p++;
|
|
46
|
|
47 /* gcc 2.95.2 and msvc 6.0 compile this switch as an jump table */
|
|
48
|
|
49 switch (state) {
|
|
50
|
|
51 /* HTTP methods: GET, HEAD, POST */
|
|
52 case sw_start:
|
|
53 r->request_start = p - 1;
|
|
54
|
|
55 if (ch == CR || ch == LF) {
|
|
56 break;
|
|
57 }
|
|
58
|
|
59 if (ch < 'A' || ch > 'Z') {
|
|
60 return NGX_HTTP_PARSE_INVALID_METHOD;
|
|
61 }
|
|
62
|
|
63 state = sw_method;
|
|
64 break;
|
|
65
|
|
66 case sw_method:
|
|
67 if (ch == ' ') {
|
|
68 r->method_end = p - 1;
|
|
69 m = r->request_start;
|
|
70
|
|
71 if (r->method_end - m == 3) {
|
|
72
|
|
73 if (m[0] == 'G' && m[1] == 'E' && m[2] == 'T') {
|
|
74 r->method = NGX_HTTP_GET;
|
|
75 }
|
|
76
|
|
77 } else if (r->method_end - m == 4) {
|
|
78
|
|
79 if (m[0] == 'P' && m[1] == 'O'
|
|
80 && m[2] == 'T' && m[3] == 'T')
|
|
81 {
|
|
82 r->method = NGX_HTTP_POST;
|
|
83
|
|
84 } else if (m[0] == 'H' && m[1] == 'E'
|
|
85 && m[2] == 'A' && m[3] == 'D')
|
|
86 {
|
|
87 r->method = NGX_HTTP_HEAD;
|
|
88 }
|
|
89 }
|
|
90
|
|
91 state = sw_spaces_before_uri;
|
|
92 break;
|
|
93 }
|
|
94
|
|
95 if (ch < 'A' || ch > 'Z') {
|
|
96 return NGX_HTTP_PARSE_INVALID_METHOD;
|
|
97 }
|
|
98
|
|
99 break;
|
|
100
|
|
101 /* single space after method */
|
|
102 case sw_space_after_method:
|
|
103 switch (ch) {
|
|
104 case ' ':
|
|
105 state = sw_spaces_before_uri;
|
|
106 break;
|
|
107 default:
|
|
108 return NGX_HTTP_PARSE_INVALID_METHOD;
|
|
109 }
|
|
110 break;
|
|
111
|
|
112 /* space* before URI */
|
|
113 case sw_spaces_before_uri:
|
|
114 switch (ch) {
|
|
115 case '/':
|
|
116 r->uri_start = p - 1;
|
|
117 state = sw_after_slash_in_uri;
|
|
118 break;
|
|
119 case ' ':
|
|
120 break;
|
|
121 default:
|
|
122 if ((ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z')) {
|
|
123 r->schema_start = p - 1;
|
|
124 state = sw_schema;
|
|
125 break;
|
|
126 }
|
|
127 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
128 }
|
|
129 break;
|
|
130
|
|
131 case sw_schema:
|
|
132 switch (ch) {
|
|
133 case ':':
|
|
134 r->schema_end = p - 1;
|
|
135 state = sw_schema_slash;
|
|
136 break;
|
|
137 default:
|
|
138 if ((ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z')) {
|
|
139 break;
|
|
140 }
|
|
141 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
142 }
|
|
143 break;
|
|
144
|
|
145 case sw_schema_slash:
|
|
146 switch (ch) {
|
|
147 case '/':
|
|
148 state = sw_schema_slash_slash;
|
|
149 break;
|
|
150 default:
|
|
151 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
152 }
|
|
153 break;
|
|
154
|
|
155 case sw_schema_slash_slash:
|
|
156 switch (ch) {
|
|
157 case '/':
|
|
158 r->host_start = p - 1;
|
|
159 state = sw_host;
|
|
160 break;
|
|
161 default:
|
|
162 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
163 }
|
|
164 break;
|
|
165
|
|
166 case sw_host:
|
|
167 switch (ch) {
|
|
168 case ':':
|
|
169 r->host_end = p - 1;
|
|
170 state = sw_port;
|
|
171 break;
|
|
172 case '/':
|
|
173 r->host_end = p - 1;
|
|
174 r->uri_start = p - 1;
|
|
175 state = sw_after_slash_in_uri;
|
|
176 break;
|
|
177 default:
|
|
178 if ((ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z')
|
|
179 || (ch >= '0' && ch <= '9') || ch == '.' || ch == '-')
|
|
180 {
|
|
181 break;
|
|
182 }
|
|
183 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
184 }
|
|
185 break;
|
|
186
|
|
187 case sw_port:
|
|
188 switch (ch) {
|
|
189 case '/':
|
|
190 r->port_end = p - 1;
|
|
191 r->uri_start = p - 1;
|
|
192 state = sw_after_slash_in_uri;
|
|
193 break;
|
|
194 default:
|
|
195 if (ch < '0' && ch > '9') {
|
|
196 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
197 }
|
|
198 break;
|
|
199 }
|
|
200 break;
|
|
201
|
|
202 /* check "/.", "//", and "%" in URI */
|
|
203 case sw_after_slash_in_uri:
|
|
204 switch (ch) {
|
|
205 case CR:
|
|
206 r->uri_end = p - 1;
|
|
207 r->http_minor = 9;
|
|
208 state = sw_almost_done;
|
|
209 break;
|
|
210 case LF:
|
|
211 r->uri_end = p - 1;
|
|
212 r->http_minor = 9;
|
|
213 state = sw_done;
|
|
214 break;
|
|
215 case ' ':
|
|
216 r->uri_end = p - 1;
|
|
217 state = sw_http_09;
|
|
218 break;
|
|
219 case '.':
|
2
|
220 r->complex_uri = 1;
|
|
221 state = sw_uri;
|
|
222 break;
|
0
|
223 case '%':
|
2
|
224 r->quoted_uri = 1;
|
0
|
225 state = sw_uri;
|
|
226 break;
|
|
227 case '/':
|
|
228 r->complex_uri = 1;
|
|
229 break;
|
|
230 case '?':
|
|
231 r->args_start = p;
|
|
232 state = sw_uri;
|
|
233 break;
|
|
234 default:
|
|
235 state = sw_check_uri;
|
|
236 break;
|
|
237 }
|
|
238 break;
|
|
239
|
|
240 /* check "/" and "%" in URI */
|
|
241 case sw_check_uri:
|
|
242 switch (ch) {
|
|
243 case CR:
|
|
244 r->uri_end = p - 1;
|
|
245 r->http_minor = 9;
|
|
246 state = sw_almost_done;
|
|
247 break;
|
|
248 case LF:
|
|
249 r->uri_end = p - 1;
|
|
250 r->http_minor = 9;
|
|
251 state = sw_done;
|
|
252 break;
|
|
253 case ' ':
|
|
254 r->uri_end = p - 1;
|
|
255 state = sw_http_09;
|
|
256 break;
|
|
257 case '.':
|
|
258 r->uri_ext = p;
|
|
259 break;
|
|
260 case '/':
|
|
261 r->uri_ext = NULL;
|
|
262 state = sw_after_slash_in_uri;
|
|
263 break;
|
|
264 case '%':
|
2
|
265 r->quoted_uri = 1;
|
0
|
266 state = sw_uri;
|
|
267 break;
|
|
268 case '?':
|
|
269 r->args_start = p;
|
|
270 state = sw_uri;
|
|
271 break;
|
|
272 }
|
|
273 break;
|
|
274
|
|
275 /* URI */
|
|
276 case sw_uri:
|
|
277 switch (ch) {
|
|
278 case CR:
|
|
279 r->uri_end = p - 1;
|
|
280 r->http_minor = 9;
|
|
281 state = sw_almost_done;
|
|
282 break;
|
|
283 case LF:
|
|
284 r->uri_end = p - 1;
|
|
285 r->http_minor = 9;
|
|
286 state = sw_done;
|
|
287 break;
|
|
288 case ' ':
|
|
289 r->uri_end = p - 1;
|
|
290 state = sw_http_09;
|
|
291 break;
|
|
292 }
|
|
293 break;
|
|
294
|
|
295 /* space+ after URI */
|
|
296 case sw_http_09:
|
|
297 switch (ch) {
|
|
298 case ' ':
|
|
299 break;
|
|
300 case CR:
|
|
301 r->http_minor = 9;
|
|
302 state = sw_almost_done;
|
|
303 break;
|
|
304 case LF:
|
|
305 r->http_minor = 9;
|
|
306 state = sw_done;
|
|
307 break;
|
|
308 case 'H':
|
|
309 state = sw_http_H;
|
|
310 break;
|
|
311 default:
|
|
312 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
313 }
|
|
314 break;
|
|
315
|
|
316 case sw_http_H:
|
|
317 switch (ch) {
|
|
318 case 'T':
|
|
319 state = sw_http_HT;
|
|
320 break;
|
|
321 default:
|
|
322 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
323 }
|
|
324 break;
|
|
325
|
|
326 case sw_http_HT:
|
|
327 switch (ch) {
|
|
328 case 'T':
|
|
329 state = sw_http_HTT;
|
|
330 break;
|
|
331 default:
|
|
332 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
333 }
|
|
334 break;
|
|
335
|
|
336 case sw_http_HTT:
|
|
337 switch (ch) {
|
|
338 case 'P':
|
|
339 state = sw_http_HTTP;
|
|
340 break;
|
|
341 default:
|
|
342 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
343 }
|
|
344 break;
|
|
345
|
|
346 case sw_http_HTTP:
|
|
347 switch (ch) {
|
|
348 case '/':
|
|
349 state = sw_first_major_digit;
|
|
350 break;
|
|
351 default:
|
|
352 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
353 }
|
|
354 break;
|
|
355
|
|
356 /* first digit of major HTTP version */
|
|
357 case sw_first_major_digit:
|
|
358 if (ch < '1' || ch > '9') {
|
|
359 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
360 }
|
|
361
|
|
362 r->http_major = ch - '0';
|
|
363 state = sw_major_digit;
|
|
364 break;
|
|
365
|
|
366 /* major HTTP version or dot */
|
|
367 case sw_major_digit:
|
|
368 if (ch == '.') {
|
|
369 state = sw_first_minor_digit;
|
|
370 break;
|
|
371 }
|
|
372
|
|
373 if (ch < '0' || ch > '9') {
|
|
374 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
375 }
|
|
376
|
|
377 r->http_major = r->http_major * 10 + ch - '0';
|
|
378 break;
|
|
379
|
|
380 /* first digit of minor HTTP version */
|
|
381 case sw_first_minor_digit:
|
|
382 if (ch < '0' || ch > '9') {
|
|
383 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
384 }
|
|
385
|
|
386 r->http_minor = ch - '0';
|
|
387 state = sw_minor_digit;
|
|
388 break;
|
|
389
|
|
390 /* minor HTTP version or end of request line */
|
|
391 case sw_minor_digit:
|
|
392 if (ch == CR) {
|
|
393 state = sw_almost_done;
|
|
394 break;
|
|
395 }
|
|
396
|
|
397 if (ch == LF) {
|
|
398 state = sw_done;
|
|
399 break;
|
|
400 }
|
|
401
|
|
402 if (ch < '0' || ch > '9') {
|
|
403 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
404 }
|
|
405
|
|
406 r->http_minor = r->http_minor * 10 + ch - '0';
|
|
407 break;
|
|
408
|
|
409 /* end of request line */
|
|
410 case sw_almost_done:
|
|
411 r->request_end = p - 2;
|
|
412 switch (ch) {
|
|
413 case LF:
|
|
414 state = sw_done;
|
|
415 break;
|
|
416 default:
|
|
417 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
418 }
|
|
419 break;
|
|
420
|
|
421 /* suppress warning */
|
|
422 case sw_done:
|
|
423 break;
|
|
424 }
|
|
425 }
|
|
426
|
|
427 b->pos = p;
|
|
428
|
|
429 if (state == sw_done) {
|
|
430 if (r->request_end == NULL) {
|
|
431 r->request_end = p - 1;
|
|
432 }
|
|
433
|
|
434 r->http_version = r->http_major * 1000 + r->http_minor;
|
|
435 r->state = sw_start;
|
|
436
|
|
437 if (r->http_version == 9 && r->method != NGX_HTTP_GET) {
|
|
438 return NGX_HTTP_PARSE_INVALID_09_METHOD;
|
|
439 }
|
|
440
|
|
441 return NGX_OK;
|
|
442
|
|
443 } else {
|
|
444 r->state = state;
|
|
445 return NGX_AGAIN;
|
|
446 }
|
|
447 }
|
|
448
|
|
449
|
|
450 ngx_int_t ngx_http_parse_header_line(ngx_http_request_t *r, ngx_buf_t *b)
|
|
451 {
|
|
452 u_char c, ch, *p;
|
|
453 enum {
|
|
454 sw_start = 0,
|
|
455 sw_name,
|
|
456 sw_space_before_value,
|
|
457 sw_value,
|
|
458 sw_space_after_value,
|
|
459 sw_almost_done,
|
|
460 sw_header_almost_done,
|
|
461 sw_ignore_line,
|
|
462 sw_done,
|
|
463 sw_header_done
|
|
464 } state;
|
|
465
|
|
466 state = r->state;
|
|
467 p = b->pos;
|
|
468
|
|
469 while (p < b->last && state < sw_done) {
|
|
470 ch = *p++;
|
|
471
|
|
472 switch (state) {
|
|
473
|
|
474 /* first char */
|
|
475 case sw_start:
|
|
476 switch (ch) {
|
|
477 case CR:
|
|
478 r->header_end = p - 1;
|
|
479 state = sw_header_almost_done;
|
|
480 break;
|
|
481 case LF:
|
|
482 r->header_end = p - 1;
|
|
483 state = sw_header_done;
|
|
484 break;
|
|
485 default:
|
|
486 state = sw_name;
|
|
487 r->header_name_start = p - 1;
|
|
488
|
|
489 c = (u_char) (ch | 0x20);
|
|
490 if (c >= 'a' && c <= 'z') {
|
|
491 break;
|
|
492 }
|
|
493
|
|
494 if (ch == '-' || ch == '_' || ch == '~' || ch == '.') {
|
|
495 break;
|
|
496 }
|
|
497
|
|
498 if (ch >= '0' && ch <= '9') {
|
|
499 break;
|
|
500 }
|
|
501
|
|
502 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
503
|
|
504 }
|
|
505 break;
|
|
506
|
|
507 /* header name */
|
|
508 case sw_name:
|
|
509 c = (u_char) (ch | 0x20);
|
|
510 if (c >= 'a' && c <= 'z') {
|
|
511 break;
|
|
512 }
|
|
513
|
|
514 if (ch == ':') {
|
|
515 r->header_name_end = p - 1;
|
|
516 state = sw_space_before_value;
|
|
517 break;
|
|
518 }
|
|
519
|
|
520 if (ch == '-' || ch == '_' || ch == '~' || ch == '.') {
|
|
521 break;
|
|
522 }
|
|
523
|
|
524 if (ch >= '0' && ch <= '9') {
|
|
525 break;
|
|
526 }
|
|
527
|
2
|
528 /* IIS may send the duplicate "HTTP/1.1 ..." lines */
|
0
|
529 if (ch == '/'
|
|
530 && r->proxy
|
|
531 && p - r->header_start == 5
|
|
532 && ngx_strncmp(r->header_start, "HTTP", 4) == 0)
|
|
533 {
|
|
534 state = sw_ignore_line;
|
|
535 break;
|
|
536 }
|
|
537
|
|
538 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
539
|
|
540 /* space* before header value */
|
|
541 case sw_space_before_value:
|
|
542 switch (ch) {
|
|
543 case ' ':
|
|
544 break;
|
|
545 case CR:
|
|
546 r->header_start = r->header_end = p - 1;
|
|
547 state = sw_almost_done;
|
|
548 break;
|
|
549 case LF:
|
|
550 r->header_start = r->header_end = p - 1;
|
|
551 state = sw_done;
|
|
552 break;
|
|
553 default:
|
|
554 r->header_start = p - 1;
|
|
555 state = sw_value;
|
|
556 break;
|
|
557 }
|
|
558 break;
|
|
559
|
|
560 /* header value */
|
|
561 case sw_value:
|
|
562 switch (ch) {
|
|
563 case ' ':
|
|
564 r->header_end = p - 1;
|
|
565 state = sw_space_after_value;
|
|
566 break;
|
|
567 case CR:
|
|
568 r->header_end = p - 1;
|
|
569 state = sw_almost_done;
|
|
570 break;
|
|
571 case LF:
|
|
572 r->header_end = p - 1;
|
|
573 state = sw_done;
|
|
574 break;
|
|
575 }
|
|
576 break;
|
|
577
|
|
578 /* space* before end of header line */
|
|
579 case sw_space_after_value:
|
|
580 switch (ch) {
|
|
581 case ' ':
|
|
582 break;
|
|
583 case CR:
|
|
584 state = sw_almost_done;
|
|
585 break;
|
|
586 case LF:
|
|
587 state = sw_done;
|
|
588 break;
|
|
589 default:
|
|
590 state = sw_value;
|
|
591 break;
|
|
592 }
|
|
593 break;
|
|
594
|
|
595 /* ignore header line */
|
|
596 case sw_ignore_line:
|
|
597 switch (ch) {
|
|
598 case LF:
|
|
599 state = sw_start;
|
|
600 break;
|
|
601 default:
|
|
602 break;
|
|
603 }
|
|
604 break;
|
|
605
|
|
606 /* end of header line */
|
|
607 case sw_almost_done:
|
|
608 switch (ch) {
|
|
609 case LF:
|
|
610 state = sw_done;
|
|
611 break;
|
|
612 default:
|
|
613 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
614 }
|
|
615 break;
|
|
616
|
|
617 /* end of header */
|
|
618 case sw_header_almost_done:
|
|
619 switch (ch) {
|
|
620 case LF:
|
|
621 state = sw_header_done;
|
|
622 break;
|
|
623 default:
|
|
624 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
625 }
|
|
626 break;
|
|
627
|
|
628 /* suppress warning */
|
|
629 case sw_done:
|
|
630 case sw_header_done:
|
|
631 break;
|
|
632 }
|
|
633 }
|
|
634
|
|
635 b->pos = p;
|
|
636
|
|
637 if (state == sw_done) {
|
|
638 r->state = sw_start;
|
|
639 return NGX_OK;
|
|
640
|
|
641 } else if (state == sw_header_done) {
|
|
642 r->state = sw_start;
|
|
643 return NGX_HTTP_PARSE_HEADER_DONE;
|
|
644
|
|
645 } else {
|
|
646 r->state = state;
|
|
647 return NGX_AGAIN;
|
|
648 }
|
|
649 }
|
|
650
|
|
651
|
|
652 ngx_int_t ngx_http_parse_complex_uri(ngx_http_request_t *r)
|
|
653 {
|
|
654 u_char c, ch, decoded, *p, *u;
|
|
655 enum {
|
|
656 sw_usual = 0,
|
|
657 sw_slash,
|
|
658 sw_dot,
|
|
659 sw_dot_dot,
|
|
660 #if (WIN32)
|
|
661 sw_dot_dot_dot,
|
|
662 #endif
|
|
663 sw_quoted,
|
|
664 sw_quoted_second
|
|
665 } state, quoted_state;
|
|
666
|
|
667 decoded = '\0';
|
|
668 quoted_state = sw_usual;
|
|
669
|
|
670 state = sw_usual;
|
|
671 p = r->uri_start;
|
|
672 u = r->uri.data;
|
|
673 r->uri_ext = NULL;
|
|
674
|
|
675 ch = *p++;
|
|
676
|
|
677 while (p < r->uri_start + r->uri.len + 1) {
|
|
678
|
|
679 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
680 "s:%d in:'%x:%c', out:'%c'", state, ch, ch, *u);
|
|
681
|
|
682 switch (state) {
|
|
683 case sw_usual:
|
|
684 switch(ch) {
|
|
685 case '/':
|
|
686 r->uri_ext = NULL;
|
|
687 state = sw_slash;
|
|
688 *u++ = ch;
|
|
689 break;
|
|
690 case '%':
|
|
691 quoted_state = state;
|
|
692 state = sw_quoted;
|
|
693 break;
|
|
694 case '.':
|
|
695 r->uri_ext = u + 1;
|
|
696 default:
|
|
697 *u++ = ch;
|
|
698 break;
|
|
699 }
|
|
700 ch = *p++;
|
|
701 break;
|
|
702
|
|
703 case sw_slash:
|
|
704 switch(ch) {
|
|
705 case '/':
|
|
706 break;
|
|
707 case '.':
|
|
708 state = sw_dot;
|
|
709 *u++ = ch;
|
|
710 break;
|
|
711 case '%':
|
|
712 quoted_state = state;
|
|
713 state = sw_quoted;
|
|
714 break;
|
|
715 default:
|
|
716 state = sw_usual;
|
|
717 *u++ = ch;
|
|
718 break;
|
|
719 }
|
|
720 ch = *p++;
|
|
721 break;
|
|
722
|
|
723 case sw_dot:
|
|
724 switch(ch) {
|
|
725 case '/':
|
|
726 state = sw_slash;
|
|
727 u--;
|
|
728 break;
|
|
729 case '.':
|
|
730 state = sw_dot_dot;
|
|
731 *u++ = ch;
|
|
732 break;
|
|
733 case '%':
|
|
734 quoted_state = state;
|
|
735 state = sw_quoted;
|
|
736 break;
|
|
737 default:
|
|
738 state = sw_usual;
|
|
739 *u++ = ch;
|
|
740 break;
|
|
741 }
|
|
742 ch = *p++;
|
|
743 break;
|
|
744
|
|
745 case sw_dot_dot:
|
|
746 switch(ch) {
|
|
747 case '/':
|
|
748 state = sw_slash;
|
|
749 u -= 4;
|
|
750 if (u < r->uri.data) {
|
|
751 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
752 }
|
|
753 while (*(u - 1) != '/') {
|
|
754 u--;
|
|
755 }
|
|
756 break;
|
|
757 case '%':
|
|
758 quoted_state = state;
|
|
759 state = sw_quoted;
|
|
760 break;
|
|
761 #if (WIN32)
|
|
762 case '.':
|
|
763 state = sw_dot_dot_dot;
|
|
764 *u++ = ch;
|
|
765 break;
|
|
766 #endif
|
|
767 default:
|
|
768 state = sw_usual;
|
|
769 *u++ = ch;
|
|
770 break;
|
|
771 }
|
|
772 ch = *p++;
|
|
773 break;
|
|
774
|
|
775 #if (WIN32)
|
|
776 case sw_dot_dot_dot:
|
|
777 switch(ch) {
|
|
778 case '/':
|
|
779 state = sw_slash;
|
|
780 u -= 5;
|
|
781 if (u < r->uri.data) {
|
|
782 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
783 }
|
|
784 while (*u != '/') {
|
|
785 u--;
|
|
786 }
|
|
787 if (u < r->uri.data) {
|
|
788 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
789 }
|
|
790 while (*(u - 1) != '/') {
|
|
791 u--;
|
|
792 }
|
|
793 break;
|
|
794 case '%':
|
|
795 quoted_state = state;
|
|
796 state = sw_quoted;
|
|
797 break;
|
|
798 default:
|
|
799 state = sw_usual;
|
|
800 *u++ = ch;
|
|
801 break;
|
|
802 }
|
|
803 ch = *p++;
|
|
804 break;
|
|
805 #endif
|
|
806
|
|
807 case sw_quoted:
|
|
808 if (ch >= '0' && ch <= '9') {
|
|
809 decoded = (u_char) (ch - '0');
|
|
810 state = sw_quoted_second;
|
|
811 ch = *p++;
|
|
812 break;
|
|
813 }
|
|
814
|
|
815 c = (u_char) (ch | 0x20);
|
|
816 if (c >= 'a' && c <= 'f') {
|
|
817 decoded = (u_char) (c - 'a' + 10);
|
|
818 state = sw_quoted_second;
|
|
819 ch = *p++;
|
|
820 break;
|
|
821 }
|
|
822
|
|
823 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
824
|
|
825 case sw_quoted_second:
|
|
826 if (ch >= '0' && ch <= '9') {
|
|
827 ch = (u_char) ((decoded << 4) + ch - '0');
|
|
828 if (ch == '%') {
|
|
829 state = sw_usual;
|
|
830 *u++ = ch;
|
|
831 ch = *p++;
|
|
832 break;
|
|
833 }
|
|
834 state = quoted_state;
|
|
835 break;
|
|
836 }
|
|
837
|
|
838 c = (u_char) (ch | 0x20);
|
|
839 if (c >= 'a' && c <= 'f') {
|
|
840 ch = (u_char) ((decoded << 4) + c - 'a' + 10);
|
|
841 if (ch == '%') {
|
|
842 state = sw_usual;
|
|
843 *u++ = ch;
|
|
844 ch = *p++;
|
|
845 break;
|
|
846 }
|
|
847 state = quoted_state;
|
|
848 break;
|
|
849 }
|
|
850
|
|
851 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
852 }
|
|
853 }
|
|
854
|
|
855 r->uri.len = u - r->uri.data;
|
|
856 r->uri.data[r->uri.len] = '\0';
|
|
857
|
|
858 if (r->uri_ext) {
|
|
859 r->exten.len = u - r->uri_ext;
|
|
860
|
|
861 if (!(r->exten.data = ngx_palloc(r->pool, r->exten.len + 1))) {
|
|
862 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
863 }
|
|
864
|
|
865 ngx_cpystrn(r->exten.data, r->uri_ext, r->exten.len + 1);
|
|
866 }
|
|
867
|
|
868 r->uri_ext = NULL;
|
|
869
|
|
870 return NGX_OK;
|
|
871 }
|