|
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
|
|
254
|
12 static uint32_t usual[] = {
|
|
|
13 0xffffdbfe, /* 1111 1111 1111 1111 1101 1011 1111 1110 */
|
|
|
14
|
|
|
15 /* ?>=< ;:98 7654 3210 /.-, +*)( '&%$ #"! */
|
|
|
16 0x7fff37d6, /* 0111 1111 1111 1111 0011 0111 1101 0110 */
|
|
|
17
|
|
|
18 /* _^]\ [ZYX WVUT SRQP ONML KJIH GFED CBA@ */
|
|
|
19 #if (NGX_WIN32)
|
|
|
20 0xefffffff, /* 1110 1111 1111 1111 1111 1111 1111 1111 */
|
|
|
21 #else
|
|
|
22 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
|
23 #endif
|
|
|
24
|
|
|
25 /* ~}| {zyx wvut srqp onml kjih gfed cba` */
|
|
|
26 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
|
27
|
|
|
28 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
|
29 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
|
30 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
|
31 0xffffffff /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
|
32 };
|
|
|
33
|
|
|
34
|
|
300
|
35 #if (NGX_HAVE_LITTLE_ENDIAN && NGX_HAVE_NONALIGNED)
|
|
|
36
|
|
|
37 #define ngx_str3_cmp(m, c0, c1, c2, c3) \
|
|
|
38 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0)
|
|
|
39
|
|
|
40 #define ngx_str3Ocmp(m, c0, c1, c2, c3) \
|
|
|
41 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0)
|
|
|
42
|
|
|
43 #define ngx_str4cmp(m, c0, c1, c2, c3) \
|
|
|
44 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0)
|
|
|
45
|
|
|
46 #define ngx_str5cmp(m, c0, c1, c2, c3, c4) \
|
|
|
47 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
|
|
|
48 && m[4] == c4
|
|
|
49
|
|
|
50 #define ngx_str6cmp(m, c0, c1, c2, c3, c4, c5) \
|
|
|
51 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
|
|
|
52 && (((uint32_t *) m)[1] & 0xffff) == ((c5 << 8) | c4)
|
|
|
53
|
|
|
54 #define ngx_str7_cmp(m, c0, c1, c2, c3, c4, c5, c6, c7) \
|
|
|
55 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
|
|
|
56 && ((uint32_t *) m)[1] == ((c7 << 24) | (c6 << 16) | (c5 << 8) | c4)
|
|
|
57
|
|
|
58 #define ngx_str8cmp(m, c0, c1, c2, c3, c4, c5, c6, c7) \
|
|
|
59 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
|
|
|
60 && ((uint32_t *) m)[1] == ((c7 << 24) | (c6 << 16) | (c5 << 8) | c4)
|
|
|
61
|
|
|
62 #define ngx_str9cmp(m, c0, c1, c2, c3, c4, c5, c6, c7, c8) \
|
|
|
63 *(uint32_t *) m == ((c3 << 24) | (c2 << 16) | (c1 << 8) | c0) \
|
|
|
64 && ((uint32_t *) m)[1] == ((c7 << 24) | (c6 << 16) | (c5 << 8) | c4) \
|
|
|
65 && m[8] == c8
|
|
|
66
|
|
|
67 #else /* !(NGX_HAVE_LITTLE_ENDIAN && NGX_HAVE_NONALIGNED) */
|
|
|
68
|
|
|
69 #define ngx_str3_cmp(m, c0, c1, c2, c3) \
|
|
|
70 m[0] == c0 && m[1] == c1 && m[2] == c2
|
|
|
71
|
|
|
72 #define ngx_str3Ocmp(m, c0, c1, c2, c3) \
|
|
|
73 m[0] == c0 && m[2] == c2 && m[3] == c3
|
|
|
74
|
|
|
75 #define ngx_str4cmp(m, c0, c1, c2, c3) \
|
|
|
76 m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3
|
|
|
77
|
|
|
78 #define ngx_str5cmp(m, c0, c1, c2, c3, c4) \
|
|
|
79 m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 && m[4] == c4
|
|
|
80
|
|
|
81 #define ngx_str6cmp(m, c0, c1, c2, c3, c4, c5) \
|
|
|
82 m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 \
|
|
|
83 && m[4] == c4 && m[5] == c5
|
|
|
84
|
|
|
85 #define ngx_str7_cmp(m, c0, c1, c2, c3, c4, c5, c6, c7) \
|
|
|
86 m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 \
|
|
|
87 && m[4] == c4 && m[5] == c5 && m[6] == c6
|
|
|
88
|
|
|
89 #define ngx_str8cmp(m, c0, c1, c2, c3, c4, c5, c6, c7) \
|
|
|
90 m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 \
|
|
|
91 && m[4] == c4 && m[5] == c5 && m[6] == c6 && m[7] == c7
|
|
|
92
|
|
|
93 #define ngx_str9cmp(m, c0, c1, c2, c3, c4, c5, c6, c7, c8) \
|
|
|
94 m[0] == c0 && m[1] == c1 && m[2] == c2 && m[3] == c3 \
|
|
|
95 && m[4] == c4 && m[5] == c5 && m[6] == c6 && m[7] == c7 && m[8] == c8
|
|
|
96
|
|
|
97 #endif
|
|
|
98
|
|
|
99
|
|
198
|
100 /* gcc, icc, msvc and others compile these switches as an jump table */
|
|
|
101
|
|
58
|
102 ngx_int_t
|
|
|
103 ngx_http_parse_request_line(ngx_http_request_t *r, ngx_buf_t *b)
|
|
0
|
104 {
|
|
56
|
105 u_char c, ch, *p, *m;
|
|
0
|
106 enum {
|
|
|
107 sw_start = 0,
|
|
|
108 sw_method,
|
|
|
109 sw_spaces_before_uri,
|
|
|
110 sw_schema,
|
|
|
111 sw_schema_slash,
|
|
|
112 sw_schema_slash_slash,
|
|
|
113 sw_host,
|
|
|
114 sw_port,
|
|
|
115 sw_after_slash_in_uri,
|
|
|
116 sw_check_uri,
|
|
|
117 sw_uri,
|
|
|
118 sw_http_09,
|
|
|
119 sw_http_H,
|
|
|
120 sw_http_HT,
|
|
|
121 sw_http_HTT,
|
|
|
122 sw_http_HTTP,
|
|
|
123 sw_first_major_digit,
|
|
|
124 sw_major_digit,
|
|
|
125 sw_first_minor_digit,
|
|
|
126 sw_minor_digit,
|
|
28
|
127 sw_almost_done
|
|
0
|
128 } state;
|
|
|
129
|
|
|
130 state = r->state;
|
|
|
131
|
|
28
|
132 for (p = b->pos; p < b->last; p++) {
|
|
|
133 ch = *p;
|
|
0
|
134
|
|
|
135 switch (state) {
|
|
|
136
|
|
|
137 /* HTTP methods: GET, HEAD, POST */
|
|
|
138 case sw_start:
|
|
28
|
139 r->request_start = p;
|
|
0
|
140
|
|
|
141 if (ch == CR || ch == LF) {
|
|
|
142 break;
|
|
|
143 }
|
|
|
144
|
|
|
145 if (ch < 'A' || ch > 'Z') {
|
|
|
146 return NGX_HTTP_PARSE_INVALID_METHOD;
|
|
|
147 }
|
|
|
148
|
|
|
149 state = sw_method;
|
|
|
150 break;
|
|
|
151
|
|
|
152 case sw_method:
|
|
|
153 if (ch == ' ') {
|
|
58
|
154 r->method_end = p - 1;
|
|
0
|
155 m = r->request_start;
|
|
|
156
|
|
188
|
157 switch (p - m) {
|
|
0
|
158
|
|
188
|
159 case 3:
|
|
300
|
160 if (ngx_str3_cmp(m, 'G', 'E', 'T', ' ')) {
|
|
0
|
161 r->method = NGX_HTTP_GET;
|
|
256
|
162 break;
|
|
|
163 }
|
|
182
|
164
|
|
300
|
165 if (ngx_str3_cmp(m, 'P', 'U', 'T', ' ')) {
|
|
182
|
166 r->method = NGX_HTTP_PUT;
|
|
256
|
167 break;
|
|
0
|
168 }
|
|
256
|
169
|
|
188
|
170 break;
|
|
0
|
171
|
|
188
|
172 case 4:
|
|
256
|
173 if (m[1] == 'O') {
|
|
|
174
|
|
300
|
175 if (ngx_str3Ocmp(m, 'P', 'O', 'S', 'T')) {
|
|
256
|
176 r->method = NGX_HTTP_POST;
|
|
|
177 break;
|
|
|
178 }
|
|
|
179
|
|
300
|
180 if (ngx_str3Ocmp(m, 'C', 'O', 'P', 'Y')) {
|
|
256
|
181 r->method = NGX_HTTP_COPY;
|
|
|
182 break;
|
|
|
183 }
|
|
0
|
184
|
|
300
|
185 if (ngx_str3Ocmp(m, 'M', 'O', 'V', 'E')) {
|
|
256
|
186 r->method = NGX_HTTP_MOVE;
|
|
|
187 break;
|
|
|
188 }
|
|
|
189
|
|
300
|
190 if (ngx_str3Ocmp(m, 'L', 'O', 'C', 'K')) {
|
|
256
|
191 r->method = NGX_HTTP_LOCK;
|
|
|
192 break;
|
|
|
193 }
|
|
|
194
|
|
|
195 } else {
|
|
|
196
|
|
300
|
197 if (ngx_str4cmp(m, 'H', 'E', 'A', 'D')) {
|
|
256
|
198 r->method = NGX_HTTP_HEAD;
|
|
|
199 break;
|
|
|
200 }
|
|
0
|
201 }
|
|
256
|
202
|
|
188
|
203 break;
|
|
182
|
204
|
|
188
|
205 case 5:
|
|
300
|
206 if (ngx_str5cmp(m, 'M', 'K', 'C', 'O', 'L')) {
|
|
186
|
207 r->method = NGX_HTTP_MKCOL;
|
|
|
208 }
|
|
256
|
209
|
|
300
|
210 if (ngx_str5cmp(m, 'T', 'R', 'A', 'C', 'E')) {
|
|
294
|
211 r->method = NGX_HTTP_TRACE;
|
|
|
212 }
|
|
|
213
|
|
188
|
214 break;
|
|
186
|
215
|
|
188
|
216 case 6:
|
|
300
|
217 if (ngx_str6cmp(m, 'D', 'E', 'L', 'E', 'T', 'E')) {
|
|
182
|
218 r->method = NGX_HTTP_DELETE;
|
|
256
|
219 break;
|
|
182
|
220 }
|
|
256
|
221
|
|
300
|
222 if (ngx_str6cmp(m, 'U', 'N', 'L', 'O', 'C', 'K')) {
|
|
256
|
223 r->method = NGX_HTTP_UNLOCK;
|
|
|
224 break;
|
|
|
225 }
|
|
|
226
|
|
|
227 break;
|
|
|
228
|
|
|
229 case 7:
|
|
300
|
230 if (ngx_str7_cmp(m, 'O', 'P', 'T', 'I', 'O', 'N', 'S', ' '))
|
|
256
|
231 {
|
|
|
232 r->method = NGX_HTTP_OPTIONS;
|
|
|
233 }
|
|
|
234
|
|
|
235 break;
|
|
|
236
|
|
|
237 case 8:
|
|
300
|
238 if (ngx_str8cmp(m, 'P', 'R', 'O', 'P', 'F', 'I', 'N', 'D'))
|
|
256
|
239 {
|
|
|
240 r->method = NGX_HTTP_PROPFIND;
|
|
|
241 }
|
|
|
242
|
|
|
243 break;
|
|
|
244
|
|
|
245 case 9:
|
|
300
|
246 if (ngx_str9cmp(m,
|
|
|
247 'P', 'R', 'O', 'P', 'P', 'A', 'T', 'C', 'H'))
|
|
256
|
248 {
|
|
|
249 r->method = NGX_HTTP_PROPPATCH;
|
|
|
250 }
|
|
|
251
|
|
188
|
252 break;
|
|
0
|
253 }
|
|
|
254
|
|
|
255 state = sw_spaces_before_uri;
|
|
|
256 break;
|
|
|
257 }
|
|
|
258
|
|
|
259 if (ch < 'A' || ch > 'Z') {
|
|
|
260 return NGX_HTTP_PARSE_INVALID_METHOD;
|
|
|
261 }
|
|
|
262
|
|
|
263 break;
|
|
|
264
|
|
|
265 /* space* before URI */
|
|
|
266 case sw_spaces_before_uri:
|
|
56
|
267
|
|
254
|
268 if (ch == '/' ){
|
|
|
269 r->uri_start = p;
|
|
|
270 state = sw_after_slash_in_uri;
|
|
|
271 break;
|
|
|
272 }
|
|
|
273
|
|
56
|
274 c = (u_char) (ch | 0x20);
|
|
70
|
275 if (c >= 'a' && c <= 'z') {
|
|
38
|
276 r->schema_start = p;
|
|
|
277 state = sw_schema;
|
|
|
278 break;
|
|
|
279 }
|
|
|
280
|
|
0
|
281 switch (ch) {
|
|
|
282 case ' ':
|
|
|
283 break;
|
|
|
284 default:
|
|
|
285 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
286 }
|
|
|
287 break;
|
|
|
288
|
|
|
289 case sw_schema:
|
|
56
|
290
|
|
|
291 c = (u_char) (ch | 0x20);
|
|
70
|
292 if (c >= 'a' && c <= 'z') {
|
|
38
|
293 break;
|
|
|
294 }
|
|
|
295
|
|
0
|
296 switch (ch) {
|
|
|
297 case ':':
|
|
28
|
298 r->schema_end = p;
|
|
0
|
299 state = sw_schema_slash;
|
|
|
300 break;
|
|
|
301 default:
|
|
|
302 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
303 }
|
|
|
304 break;
|
|
|
305
|
|
|
306 case sw_schema_slash:
|
|
|
307 switch (ch) {
|
|
|
308 case '/':
|
|
|
309 state = sw_schema_slash_slash;
|
|
|
310 break;
|
|
|
311 default:
|
|
|
312 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
313 }
|
|
|
314 break;
|
|
|
315
|
|
|
316 case sw_schema_slash_slash:
|
|
|
317 switch (ch) {
|
|
|
318 case '/':
|
|
258
|
319 r->host_start = p + 1;
|
|
0
|
320 state = sw_host;
|
|
|
321 break;
|
|
|
322 default:
|
|
|
323 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
324 }
|
|
|
325 break;
|
|
|
326
|
|
|
327 case sw_host:
|
|
56
|
328
|
|
|
329 c = (u_char) (ch | 0x20);
|
|
70
|
330 if (c >= 'a' && c <= 'z') {
|
|
56
|
331 break;
|
|
|
332 }
|
|
|
333
|
|
254
|
334 if ((ch >= '0' && ch <= '9') || ch == '.' || ch == '-') {
|
|
38
|
335 break;
|
|
|
336 }
|
|
|
337
|
|
0
|
338 switch (ch) {
|
|
|
339 case ':':
|
|
28
|
340 r->host_end = p;
|
|
0
|
341 state = sw_port;
|
|
|
342 break;
|
|
|
343 case '/':
|
|
28
|
344 r->host_end = p;
|
|
|
345 r->uri_start = p;
|
|
0
|
346 state = sw_after_slash_in_uri;
|
|
|
347 break;
|
|
|
348 default:
|
|
268
|
349 r->host_end = p;
|
|
0
|
350 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
351 }
|
|
|
352 break;
|
|
|
353
|
|
|
354 case sw_port:
|
|
38
|
355 if (ch >= '0' && ch <= '9') {
|
|
|
356 break;
|
|
|
357 }
|
|
|
358
|
|
0
|
359 switch (ch) {
|
|
|
360 case '/':
|
|
28
|
361 r->port_end = p;
|
|
|
362 r->uri_start = p;
|
|
0
|
363 state = sw_after_slash_in_uri;
|
|
|
364 break;
|
|
|
365 default:
|
|
38
|
366 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
0
|
367 }
|
|
|
368 break;
|
|
|
369
|
|
10
|
370 /* check "/.", "//", "%", and "\" (Win32) in URI */
|
|
0
|
371 case sw_after_slash_in_uri:
|
|
38
|
372
|
|
254
|
373 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
38
|
374 state = sw_check_uri;
|
|
|
375 break;
|
|
|
376 }
|
|
|
377
|
|
0
|
378 switch (ch) {
|
|
38
|
379 case ' ':
|
|
|
380 r->uri_end = p;
|
|
|
381 state = sw_http_09;
|
|
|
382 break;
|
|
0
|
383 case CR:
|
|
28
|
384 r->uri_end = p;
|
|
0
|
385 r->http_minor = 9;
|
|
|
386 state = sw_almost_done;
|
|
|
387 break;
|
|
|
388 case LF:
|
|
28
|
389 r->uri_end = p;
|
|
0
|
390 r->http_minor = 9;
|
|
28
|
391 goto done;
|
|
0
|
392 case '.':
|
|
2
|
393 r->complex_uri = 1;
|
|
|
394 state = sw_uri;
|
|
|
395 break;
|
|
0
|
396 case '%':
|
|
2
|
397 r->quoted_uri = 1;
|
|
0
|
398 state = sw_uri;
|
|
|
399 break;
|
|
38
|
400 case '/':
|
|
|
401 r->complex_uri = 1;
|
|
|
402 state = sw_uri;
|
|
|
403 break;
|
|
10
|
404 #if (NGX_WIN32)
|
|
|
405 case '\\':
|
|
|
406 r->complex_uri = 1;
|
|
38
|
407 state = sw_uri;
|
|
10
|
408 break;
|
|
|
409 #endif
|
|
38
|
410 case '?':
|
|
|
411 r->args_start = p + 1;
|
|
|
412 state = sw_uri;
|
|
0
|
413 break;
|
|
254
|
414 case '#':
|
|
|
415 r->complex_uri = 1;
|
|
|
416 state = sw_uri;
|
|
|
417 break;
|
|
34
|
418 case '+':
|
|
|
419 r->plus_in_uri = 1;
|
|
|
420 break;
|
|
38
|
421 case '\0':
|
|
|
422 r->zero_in_uri = 1;
|
|
0
|
423 break;
|
|
|
424 default:
|
|
|
425 state = sw_check_uri;
|
|
|
426 break;
|
|
|
427 }
|
|
|
428 break;
|
|
|
429
|
|
10
|
430 /* check "/", "%" and "\" (Win32) in URI */
|
|
0
|
431 case sw_check_uri:
|
|
38
|
432
|
|
254
|
433 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
38
|
434 break;
|
|
|
435 }
|
|
|
436
|
|
0
|
437 switch (ch) {
|
|
38
|
438 case '/':
|
|
|
439 r->uri_ext = NULL;
|
|
|
440 state = sw_after_slash_in_uri;
|
|
|
441 break;
|
|
|
442 case '.':
|
|
|
443 r->uri_ext = p + 1;
|
|
|
444 break;
|
|
|
445 case ' ':
|
|
|
446 r->uri_end = p;
|
|
|
447 state = sw_http_09;
|
|
|
448 break;
|
|
0
|
449 case CR:
|
|
28
|
450 r->uri_end = p;
|
|
0
|
451 r->http_minor = 9;
|
|
|
452 state = sw_almost_done;
|
|
|
453 break;
|
|
|
454 case LF:
|
|
28
|
455 r->uri_end = p;
|
|
0
|
456 r->http_minor = 9;
|
|
28
|
457 goto done;
|
|
10
|
458 #if (NGX_WIN32)
|
|
|
459 case '\\':
|
|
|
460 r->complex_uri = 1;
|
|
|
461 state = sw_after_slash_in_uri;
|
|
|
462 break;
|
|
|
463 #endif
|
|
38
|
464 case '%':
|
|
|
465 r->quoted_uri = 1;
|
|
|
466 state = sw_uri;
|
|
0
|
467 break;
|
|
|
468 case '?':
|
|
28
|
469 r->args_start = p + 1;
|
|
0
|
470 state = sw_uri;
|
|
|
471 break;
|
|
254
|
472 case '#':
|
|
|
473 r->complex_uri = 1;
|
|
|
474 state = sw_uri;
|
|
|
475 break;
|
|
206
|
476 case '+':
|
|
|
477 r->plus_in_uri = 1;
|
|
|
478 break;
|
|
38
|
479 case '\0':
|
|
|
480 r->zero_in_uri = 1;
|
|
|
481 break;
|
|
0
|
482 }
|
|
|
483 break;
|
|
|
484
|
|
|
485 /* URI */
|
|
|
486 case sw_uri:
|
|
254
|
487
|
|
|
488 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
489 break;
|
|
|
490 }
|
|
|
491
|
|
0
|
492 switch (ch) {
|
|
38
|
493 case ' ':
|
|
|
494 r->uri_end = p;
|
|
|
495 state = sw_http_09;
|
|
|
496 break;
|
|
0
|
497 case CR:
|
|
28
|
498 r->uri_end = p;
|
|
0
|
499 r->http_minor = 9;
|
|
|
500 state = sw_almost_done;
|
|
|
501 break;
|
|
|
502 case LF:
|
|
28
|
503 r->uri_end = p;
|
|
0
|
504 r->http_minor = 9;
|
|
28
|
505 goto done;
|
|
254
|
506 case '#':
|
|
|
507 r->complex_uri = 1;
|
|
|
508 break;
|
|
38
|
509 case '\0':
|
|
|
510 r->zero_in_uri = 1;
|
|
0
|
511 break;
|
|
|
512 }
|
|
|
513 break;
|
|
|
514
|
|
|
515 /* space+ after URI */
|
|
|
516 case sw_http_09:
|
|
|
517 switch (ch) {
|
|
|
518 case ' ':
|
|
|
519 break;
|
|
|
520 case CR:
|
|
|
521 r->http_minor = 9;
|
|
|
522 state = sw_almost_done;
|
|
|
523 break;
|
|
|
524 case LF:
|
|
|
525 r->http_minor = 9;
|
|
28
|
526 goto done;
|
|
0
|
527 case 'H':
|
|
28
|
528 r->http_protocol.data = p;
|
|
0
|
529 state = sw_http_H;
|
|
|
530 break;
|
|
|
531 default:
|
|
|
532 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
533 }
|
|
|
534 break;
|
|
|
535
|
|
|
536 case sw_http_H:
|
|
|
537 switch (ch) {
|
|
|
538 case 'T':
|
|
|
539 state = sw_http_HT;
|
|
|
540 break;
|
|
|
541 default:
|
|
|
542 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
543 }
|
|
|
544 break;
|
|
|
545
|
|
|
546 case sw_http_HT:
|
|
|
547 switch (ch) {
|
|
|
548 case 'T':
|
|
|
549 state = sw_http_HTT;
|
|
|
550 break;
|
|
|
551 default:
|
|
|
552 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
553 }
|
|
|
554 break;
|
|
|
555
|
|
|
556 case sw_http_HTT:
|
|
|
557 switch (ch) {
|
|
|
558 case 'P':
|
|
|
559 state = sw_http_HTTP;
|
|
|
560 break;
|
|
|
561 default:
|
|
|
562 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
563 }
|
|
|
564 break;
|
|
|
565
|
|
|
566 case sw_http_HTTP:
|
|
|
567 switch (ch) {
|
|
|
568 case '/':
|
|
|
569 state = sw_first_major_digit;
|
|
|
570 break;
|
|
|
571 default:
|
|
|
572 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
573 }
|
|
|
574 break;
|
|
|
575
|
|
|
576 /* first digit of major HTTP version */
|
|
|
577 case sw_first_major_digit:
|
|
|
578 if (ch < '1' || ch > '9') {
|
|
|
579 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
580 }
|
|
|
581
|
|
|
582 r->http_major = ch - '0';
|
|
|
583 state = sw_major_digit;
|
|
|
584 break;
|
|
|
585
|
|
|
586 /* major HTTP version or dot */
|
|
|
587 case sw_major_digit:
|
|
|
588 if (ch == '.') {
|
|
|
589 state = sw_first_minor_digit;
|
|
|
590 break;
|
|
|
591 }
|
|
|
592
|
|
|
593 if (ch < '0' || ch > '9') {
|
|
|
594 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
595 }
|
|
|
596
|
|
|
597 r->http_major = r->http_major * 10 + ch - '0';
|
|
|
598 break;
|
|
|
599
|
|
|
600 /* first digit of minor HTTP version */
|
|
|
601 case sw_first_minor_digit:
|
|
|
602 if (ch < '0' || ch > '9') {
|
|
|
603 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
604 }
|
|
|
605
|
|
|
606 r->http_minor = ch - '0';
|
|
|
607 state = sw_minor_digit;
|
|
|
608 break;
|
|
|
609
|
|
|
610 /* minor HTTP version or end of request line */
|
|
|
611 case sw_minor_digit:
|
|
|
612 if (ch == CR) {
|
|
|
613 state = sw_almost_done;
|
|
|
614 break;
|
|
|
615 }
|
|
|
616
|
|
|
617 if (ch == LF) {
|
|
28
|
618 goto done;
|
|
0
|
619 }
|
|
|
620
|
|
|
621 if (ch < '0' || ch > '9') {
|
|
|
622 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
623 }
|
|
|
624
|
|
|
625 r->http_minor = r->http_minor * 10 + ch - '0';
|
|
|
626 break;
|
|
|
627
|
|
|
628 /* end of request line */
|
|
|
629 case sw_almost_done:
|
|
28
|
630 r->request_end = p - 1;
|
|
0
|
631 switch (ch) {
|
|
|
632 case LF:
|
|
28
|
633 goto done;
|
|
0
|
634 default:
|
|
|
635 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
636 }
|
|
|
637 }
|
|
|
638 }
|
|
|
639
|
|
|
640 b->pos = p;
|
|
28
|
641 r->state = state;
|
|
0
|
642
|
|
28
|
643 return NGX_AGAIN;
|
|
0
|
644
|
|
28
|
645 done:
|
|
|
646
|
|
|
647 b->pos = p + 1;
|
|
0
|
648
|
|
28
|
649 if (r->request_end == NULL) {
|
|
|
650 r->request_end = p;
|
|
|
651 }
|
|
0
|
652
|
|
28
|
653 r->http_version = r->http_major * 1000 + r->http_minor;
|
|
|
654 r->state = sw_start;
|
|
0
|
655
|
|
28
|
656 if (r->http_version == 9 && r->method != NGX_HTTP_GET) {
|
|
|
657 return NGX_HTTP_PARSE_INVALID_09_METHOD;
|
|
0
|
658 }
|
|
28
|
659
|
|
|
660 return NGX_OK;
|
|
0
|
661 }
|
|
|
662
|
|
|
663
|
|
58
|
664 ngx_int_t
|
|
|
665 ngx_http_parse_header_line(ngx_http_request_t *r, ngx_buf_t *b)
|
|
0
|
666 {
|
|
56
|
667 u_char c, ch, *p;
|
|
198
|
668 ngx_uint_t hash, i;
|
|
0
|
669 enum {
|
|
|
670 sw_start = 0,
|
|
|
671 sw_name,
|
|
|
672 sw_space_before_value,
|
|
|
673 sw_value,
|
|
|
674 sw_space_after_value,
|
|
52
|
675 sw_ignore_line,
|
|
0
|
676 sw_almost_done,
|
|
52
|
677 sw_header_almost_done
|
|
0
|
678 } state;
|
|
|
679
|
|
250
|
680 /* the last '\0' is not needed because string is zero terminated */
|
|
|
681
|
|
198
|
682 static u_char lowcase[] =
|
|
|
683 "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
|
|
|
684 "\0\0\0\0\0\0\0\0\0\0\0\0\0-\0\0" "0123456789\0\0\0\0\0\0"
|
|
|
685 "\0abcdefghijklmnopqrstuvwxyz\0\0\0\0\0"
|
|
|
686 "\0abcdefghijklmnopqrstuvwxyz\0\0\0\0\0"
|
|
|
687 "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
|
|
|
688 "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
|
|
|
689 "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
|
|
|
690 "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
|
|
|
691
|
|
0
|
692 state = r->state;
|
|
56
|
693 hash = r->header_hash;
|
|
198
|
694 i = r->lowcase_index;
|
|
0
|
695
|
|
28
|
696 for (p = b->pos; p < b->last; p++) {
|
|
|
697 ch = *p;
|
|
0
|
698
|
|
|
699 switch (state) {
|
|
|
700
|
|
|
701 /* first char */
|
|
|
702 case sw_start:
|
|
60
|
703 r->invalid_header = 0;
|
|
|
704
|
|
0
|
705 switch (ch) {
|
|
|
706 case CR:
|
|
28
|
707 r->header_end = p;
|
|
0
|
708 state = sw_header_almost_done;
|
|
|
709 break;
|
|
|
710 case LF:
|
|
28
|
711 r->header_end = p;
|
|
|
712 goto header_done;
|
|
0
|
713 default:
|
|
|
714 state = sw_name;
|
|
28
|
715 r->header_name_start = p;
|
|
0
|
716
|
|
198
|
717 c = lowcase[ch];
|
|
0
|
718
|
|
198
|
719 if (c) {
|
|
|
720 hash = ngx_hash(0, c);
|
|
|
721 r->lowcase_header[0] = c;
|
|
|
722 i = 1;
|
|
0
|
723 break;
|
|
|
724 }
|
|
|
725
|
|
60
|
726 r->invalid_header = 1;
|
|
|
727
|
|
52
|
728 break;
|
|
0
|
729
|
|
|
730 }
|
|
|
731 break;
|
|
|
732
|
|
|
733 /* header name */
|
|
|
734 case sw_name:
|
|
198
|
735 c = lowcase[ch];
|
|
|
736
|
|
|
737 if (c) {
|
|
|
738 hash = ngx_hash(hash, c);
|
|
|
739 r->lowcase_header[i++] = c;
|
|
|
740 i &= ~NGX_HTTP_LC_HEADER_LEN;
|
|
0
|
741 break;
|
|
|
742 }
|
|
|
743
|
|
|
744 if (ch == ':') {
|
|
28
|
745 r->header_name_end = p;
|
|
0
|
746 state = sw_space_before_value;
|
|
|
747 break;
|
|
|
748 }
|
|
|
749
|
|
58
|
750 if (ch == CR) {
|
|
|
751 r->header_name_end = p;
|
|
|
752 r->header_start = p;
|
|
|
753 r->header_end = p;
|
|
|
754 state = sw_almost_done;
|
|
|
755 break;
|
|
|
756 }
|
|
|
757
|
|
|
758 if (ch == LF) {
|
|
|
759 r->header_name_end = p;
|
|
|
760 r->header_start = p;
|
|
|
761 r->header_end = p;
|
|
|
762 goto done;
|
|
|
763 }
|
|
|
764
|
|
2
|
765 /* IIS may send the duplicate "HTTP/1.1 ..." lines */
|
|
0
|
766 if (ch == '/'
|
|
58
|
767 && r->upstream
|
|
|
768 && p - r->header_name_start == 4
|
|
|
769 && ngx_strncmp(r->header_name_start, "HTTP", 4) == 0)
|
|
0
|
770 {
|
|
|
771 state = sw_ignore_line;
|
|
|
772 break;
|
|
|
773 }
|
|
|
774
|
|
60
|
775 r->invalid_header = 1;
|
|
|
776
|
|
52
|
777 break;
|
|
0
|
778
|
|
|
779 /* space* before header value */
|
|
|
780 case sw_space_before_value:
|
|
|
781 switch (ch) {
|
|
|
782 case ' ':
|
|
|
783 break;
|
|
|
784 case CR:
|
|
58
|
785 r->header_start = p;
|
|
|
786 r->header_end = p;
|
|
0
|
787 state = sw_almost_done;
|
|
|
788 break;
|
|
|
789 case LF:
|
|
58
|
790 r->header_start = p;
|
|
|
791 r->header_end = p;
|
|
28
|
792 goto done;
|
|
0
|
793 default:
|
|
28
|
794 r->header_start = p;
|
|
0
|
795 state = sw_value;
|
|
|
796 break;
|
|
|
797 }
|
|
|
798 break;
|
|
|
799
|
|
|
800 /* header value */
|
|
|
801 case sw_value:
|
|
|
802 switch (ch) {
|
|
|
803 case ' ':
|
|
28
|
804 r->header_end = p;
|
|
0
|
805 state = sw_space_after_value;
|
|
|
806 break;
|
|
|
807 case CR:
|
|
28
|
808 r->header_end = p;
|
|
0
|
809 state = sw_almost_done;
|
|
|
810 break;
|
|
|
811 case LF:
|
|
28
|
812 r->header_end = p;
|
|
|
813 goto done;
|
|
0
|
814 }
|
|
|
815 break;
|
|
|
816
|
|
|
817 /* space* before end of header line */
|
|
|
818 case sw_space_after_value:
|
|
|
819 switch (ch) {
|
|
|
820 case ' ':
|
|
|
821 break;
|
|
|
822 case CR:
|
|
|
823 state = sw_almost_done;
|
|
|
824 break;
|
|
|
825 case LF:
|
|
28
|
826 goto done;
|
|
0
|
827 default:
|
|
|
828 state = sw_value;
|
|
|
829 break;
|
|
|
830 }
|
|
|
831 break;
|
|
|
832
|
|
|
833 /* ignore header line */
|
|
|
834 case sw_ignore_line:
|
|
|
835 switch (ch) {
|
|
|
836 case LF:
|
|
|
837 state = sw_start;
|
|
|
838 break;
|
|
|
839 default:
|
|
|
840 break;
|
|
|
841 }
|
|
|
842 break;
|
|
|
843
|
|
|
844 /* end of header line */
|
|
|
845 case sw_almost_done:
|
|
|
846 switch (ch) {
|
|
172
|
847 case CR:
|
|
|
848 break;
|
|
0
|
849 case LF:
|
|
28
|
850 goto done;
|
|
0
|
851 default:
|
|
|
852 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
|
853 }
|
|
174
|
854 break;
|
|
0
|
855
|
|
|
856 /* end of header */
|
|
|
857 case sw_header_almost_done:
|
|
|
858 switch (ch) {
|
|
|
859 case LF:
|
|
28
|
860 goto header_done;
|
|
0
|
861 default:
|
|
|
862 return NGX_HTTP_PARSE_INVALID_HEADER;
|
|
|
863 }
|
|
|
864 }
|
|
|
865 }
|
|
|
866
|
|
|
867 b->pos = p;
|
|
28
|
868 r->state = state;
|
|
56
|
869 r->header_hash = hash;
|
|
198
|
870 r->lowcase_index = i;
|
|
0
|
871
|
|
28
|
872 return NGX_AGAIN;
|
|
|
873
|
|
|
874 done:
|
|
|
875
|
|
|
876 b->pos = p + 1;
|
|
|
877 r->state = sw_start;
|
|
56
|
878 r->header_hash = hash;
|
|
198
|
879 r->lowcase_index = i;
|
|
0
|
880
|
|
28
|
881 return NGX_OK;
|
|
|
882
|
|
|
883 header_done:
|
|
0
|
884
|
|
28
|
885 b->pos = p + 1;
|
|
|
886 r->state = sw_start;
|
|
|
887
|
|
|
888 return NGX_HTTP_PARSE_HEADER_DONE;
|
|
0
|
889 }
|
|
|
890
|
|
|
891
|
|
58
|
892 ngx_int_t
|
|
|
893 ngx_http_parse_complex_uri(ngx_http_request_t *r)
|
|
0
|
894 {
|
|
|
895 u_char c, ch, decoded, *p, *u;
|
|
|
896 enum {
|
|
|
897 sw_usual = 0,
|
|
|
898 sw_slash,
|
|
|
899 sw_dot,
|
|
|
900 sw_dot_dot,
|
|
10
|
901 #if (NGX_WIN32)
|
|
0
|
902 sw_dot_dot_dot,
|
|
|
903 #endif
|
|
|
904 sw_quoted,
|
|
|
905 sw_quoted_second
|
|
|
906 } state, quoted_state;
|
|
|
907
|
|
28
|
908 #if (NGX_SUPPRESS_WARN)
|
|
0
|
909 decoded = '\0';
|
|
|
910 quoted_state = sw_usual;
|
|
28
|
911 #endif
|
|
0
|
912
|
|
|
913 state = sw_usual;
|
|
|
914 p = r->uri_start;
|
|
|
915 u = r->uri.data;
|
|
|
916 r->uri_ext = NULL;
|
|
10
|
917 r->args_start = NULL;
|
|
0
|
918
|
|
|
919 ch = *p++;
|
|
|
920
|
|
28
|
921 while (p <= r->uri_end) {
|
|
10
|
922
|
|
|
923 /*
|
|
28
|
924 * we use "ch = *p++" inside the cycle, but this operation is safe,
|
|
10
|
925 * because after the URI there is always at least one charcter:
|
|
|
926 * the line feed
|
|
|
927 */
|
|
0
|
928
|
|
|
929 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
10
|
930 "s:%d in:'%Xd:%c', out:'%c'", state, ch, ch, *u);
|
|
0
|
931
|
|
|
932 switch (state) {
|
|
122
|
933
|
|
0
|
934 case sw_usual:
|
|
254
|
935
|
|
|
936 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
937 *u++ = ch;
|
|
|
938 ch = *p++;
|
|
|
939 break;
|
|
|
940 }
|
|
|
941
|
|
0
|
942 switch(ch) {
|
|
10
|
943 #if (NGX_WIN32)
|
|
|
944 case '\\':
|
|
|
945 r->uri_ext = NULL;
|
|
|
946
|
|
|
947 if (p == r->uri_start + r->uri.len) {
|
|
|
948
|
|
|
949 /*
|
|
|
950 * we omit the last "\" to cause redirect because
|
|
|
951 * the browsers do not treat "\" as "/" in relative URL path
|
|
|
952 */
|
|
|
953
|
|
|
954 break;
|
|
|
955 }
|
|
|
956
|
|
|
957 state = sw_slash;
|
|
|
958 *u++ = '/';
|
|
|
959 break;
|
|
|
960 #endif
|
|
0
|
961 case '/':
|
|
|
962 r->uri_ext = NULL;
|
|
|
963 state = sw_slash;
|
|
|
964 *u++ = ch;
|
|
|
965 break;
|
|
|
966 case '%':
|
|
|
967 quoted_state = state;
|
|
|
968 state = sw_quoted;
|
|
|
969 break;
|
|
10
|
970 case '?':
|
|
|
971 r->args_start = p;
|
|
254
|
972 goto args;
|
|
|
973 case '#':
|
|
28
|
974 goto done;
|
|
0
|
975 case '.':
|
|
|
976 r->uri_ext = u + 1;
|
|
22
|
977 *u++ = ch;
|
|
|
978 break;
|
|
206
|
979 case '+':
|
|
|
980 r->plus_in_uri = 1;
|
|
0
|
981 default:
|
|
|
982 *u++ = ch;
|
|
|
983 break;
|
|
|
984 }
|
|
254
|
985
|
|
0
|
986 ch = *p++;
|
|
|
987 break;
|
|
|
988
|
|
|
989 case sw_slash:
|
|
254
|
990
|
|
|
991 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
992 state = sw_usual;
|
|
|
993 *u++ = ch;
|
|
|
994 ch = *p++;
|
|
|
995 break;
|
|
|
996 }
|
|
|
997
|
|
0
|
998 switch(ch) {
|
|
10
|
999 #if (NGX_WIN32)
|
|
|
1000 case '\\':
|
|
|
1001 #endif
|
|
0
|
1002 case '/':
|
|
|
1003 break;
|
|
|
1004 case '.':
|
|
|
1005 state = sw_dot;
|
|
|
1006 *u++ = ch;
|
|
|
1007 break;
|
|
|
1008 case '%':
|
|
|
1009 quoted_state = state;
|
|
|
1010 state = sw_quoted;
|
|
|
1011 break;
|
|
28
|
1012 case '?':
|
|
|
1013 r->args_start = p;
|
|
254
|
1014 goto args;
|
|
|
1015 case '#':
|
|
28
|
1016 goto done;
|
|
206
|
1017 case '+':
|
|
|
1018 r->plus_in_uri = 1;
|
|
0
|
1019 default:
|
|
|
1020 state = sw_usual;
|
|
|
1021 *u++ = ch;
|
|
|
1022 break;
|
|
|
1023 }
|
|
254
|
1024
|
|
0
|
1025 ch = *p++;
|
|
|
1026 break;
|
|
|
1027
|
|
|
1028 case sw_dot:
|
|
254
|
1029
|
|
|
1030 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1031 state = sw_usual;
|
|
|
1032 *u++ = ch;
|
|
|
1033 ch = *p++;
|
|
|
1034 break;
|
|
|
1035 }
|
|
|
1036
|
|
0
|
1037 switch(ch) {
|
|
10
|
1038 #if (NGX_WIN32)
|
|
|
1039 case '\\':
|
|
|
1040 #endif
|
|
0
|
1041 case '/':
|
|
|
1042 state = sw_slash;
|
|
|
1043 u--;
|
|
|
1044 break;
|
|
|
1045 case '.':
|
|
|
1046 state = sw_dot_dot;
|
|
|
1047 *u++ = ch;
|
|
|
1048 break;
|
|
|
1049 case '%':
|
|
|
1050 quoted_state = state;
|
|
|
1051 state = sw_quoted;
|
|
|
1052 break;
|
|
28
|
1053 case '?':
|
|
|
1054 r->args_start = p;
|
|
254
|
1055 goto args;
|
|
|
1056 case '#':
|
|
28
|
1057 goto done;
|
|
206
|
1058 case '+':
|
|
|
1059 r->plus_in_uri = 1;
|
|
0
|
1060 default:
|
|
|
1061 state = sw_usual;
|
|
|
1062 *u++ = ch;
|
|
|
1063 break;
|
|
|
1064 }
|
|
254
|
1065
|
|
0
|
1066 ch = *p++;
|
|
|
1067 break;
|
|
|
1068
|
|
|
1069 case sw_dot_dot:
|
|
254
|
1070
|
|
|
1071 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1072 state = sw_usual;
|
|
|
1073 *u++ = ch;
|
|
|
1074 ch = *p++;
|
|
|
1075 break;
|
|
|
1076 }
|
|
|
1077
|
|
0
|
1078 switch(ch) {
|
|
10
|
1079 #if (NGX_WIN32)
|
|
|
1080 case '\\':
|
|
|
1081 #endif
|
|
0
|
1082 case '/':
|
|
|
1083 state = sw_slash;
|
|
|
1084 u -= 4;
|
|
|
1085 if (u < r->uri.data) {
|
|
|
1086 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1087 }
|
|
|
1088 while (*(u - 1) != '/') {
|
|
|
1089 u--;
|
|
|
1090 }
|
|
|
1091 break;
|
|
|
1092 case '%':
|
|
|
1093 quoted_state = state;
|
|
|
1094 state = sw_quoted;
|
|
|
1095 break;
|
|
28
|
1096 case '?':
|
|
|
1097 r->args_start = p;
|
|
254
|
1098 goto args;
|
|
|
1099 case '#':
|
|
28
|
1100 goto done;
|
|
10
|
1101 #if (NGX_WIN32)
|
|
0
|
1102 case '.':
|
|
|
1103 state = sw_dot_dot_dot;
|
|
|
1104 *u++ = ch;
|
|
|
1105 break;
|
|
|
1106 #endif
|
|
206
|
1107 case '+':
|
|
|
1108 r->plus_in_uri = 1;
|
|
0
|
1109 default:
|
|
|
1110 state = sw_usual;
|
|
|
1111 *u++ = ch;
|
|
|
1112 break;
|
|
|
1113 }
|
|
254
|
1114
|
|
0
|
1115 ch = *p++;
|
|
|
1116 break;
|
|
|
1117
|
|
10
|
1118 #if (NGX_WIN32)
|
|
0
|
1119 case sw_dot_dot_dot:
|
|
254
|
1120
|
|
|
1121 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1122 state = sw_usual;
|
|
|
1123 *u++ = ch;
|
|
|
1124 ch = *p++;
|
|
|
1125 break;
|
|
|
1126 }
|
|
|
1127
|
|
0
|
1128 switch(ch) {
|
|
10
|
1129 case '\\':
|
|
0
|
1130 case '/':
|
|
|
1131 state = sw_slash;
|
|
|
1132 u -= 5;
|
|
|
1133 if (u < r->uri.data) {
|
|
|
1134 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1135 }
|
|
|
1136 while (*u != '/') {
|
|
|
1137 u--;
|
|
|
1138 }
|
|
|
1139 if (u < r->uri.data) {
|
|
|
1140 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1141 }
|
|
|
1142 while (*(u - 1) != '/') {
|
|
|
1143 u--;
|
|
|
1144 }
|
|
|
1145 break;
|
|
|
1146 case '%':
|
|
|
1147 quoted_state = state;
|
|
|
1148 state = sw_quoted;
|
|
|
1149 break;
|
|
122
|
1150 case '?':
|
|
|
1151 r->args_start = p;
|
|
254
|
1152 goto args;
|
|
|
1153 case '#':
|
|
122
|
1154 goto done;
|
|
206
|
1155 case '+':
|
|
|
1156 r->plus_in_uri = 1;
|
|
0
|
1157 default:
|
|
|
1158 state = sw_usual;
|
|
|
1159 *u++ = ch;
|
|
|
1160 break;
|
|
|
1161 }
|
|
254
|
1162
|
|
0
|
1163 ch = *p++;
|
|
|
1164 break;
|
|
|
1165 #endif
|
|
|
1166
|
|
|
1167 case sw_quoted:
|
|
216
|
1168 r->quoted_uri = 1;
|
|
|
1169
|
|
0
|
1170 if (ch >= '0' && ch <= '9') {
|
|
|
1171 decoded = (u_char) (ch - '0');
|
|
|
1172 state = sw_quoted_second;
|
|
|
1173 ch = *p++;
|
|
|
1174 break;
|
|
|
1175 }
|
|
|
1176
|
|
|
1177 c = (u_char) (ch | 0x20);
|
|
|
1178 if (c >= 'a' && c <= 'f') {
|
|
|
1179 decoded = (u_char) (c - 'a' + 10);
|
|
|
1180 state = sw_quoted_second;
|
|
|
1181 ch = *p++;
|
|
|
1182 break;
|
|
|
1183 }
|
|
|
1184
|
|
|
1185 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1186
|
|
|
1187 case sw_quoted_second:
|
|
|
1188 if (ch >= '0' && ch <= '9') {
|
|
|
1189 ch = (u_char) ((decoded << 4) + ch - '0');
|
|
38
|
1190
|
|
0
|
1191 if (ch == '%') {
|
|
|
1192 state = sw_usual;
|
|
|
1193 *u++ = ch;
|
|
|
1194 ch = *p++;
|
|
|
1195 break;
|
|
|
1196 }
|
|
38
|
1197
|
|
254
|
1198 if (ch == '#') {
|
|
|
1199 *u++ = ch;
|
|
|
1200 ch = *p++;
|
|
|
1201
|
|
|
1202 } else if (ch == '\0') {
|
|
38
|
1203 r->zero_in_uri = 1;
|
|
|
1204 }
|
|
|
1205
|
|
0
|
1206 state = quoted_state;
|
|
|
1207 break;
|
|
|
1208 }
|
|
|
1209
|
|
|
1210 c = (u_char) (ch | 0x20);
|
|
|
1211 if (c >= 'a' && c <= 'f') {
|
|
|
1212 ch = (u_char) ((decoded << 4) + c - 'a' + 10);
|
|
206
|
1213
|
|
28
|
1214 if (ch == '?') {
|
|
0
|
1215 *u++ = ch;
|
|
|
1216 ch = *p++;
|
|
206
|
1217
|
|
|
1218 } else if (ch == '+') {
|
|
|
1219 r->plus_in_uri = 1;
|
|
0
|
1220 }
|
|
206
|
1221
|
|
0
|
1222 state = quoted_state;
|
|
|
1223 break;
|
|
|
1224 }
|
|
|
1225
|
|
|
1226 return NGX_HTTP_PARSE_INVALID_REQUEST;
|
|
|
1227 }
|
|
|
1228 }
|
|
|
1229
|
|
28
|
1230 done:
|
|
|
1231
|
|
0
|
1232 r->uri.len = u - r->uri.data;
|
|
254
|
1233
|
|
|
1234 if (r->uri_ext) {
|
|
|
1235 r->exten.len = u - r->uri_ext;
|
|
|
1236 r->exten.data = r->uri_ext;
|
|
|
1237 }
|
|
|
1238
|
|
|
1239 r->uri_ext = NULL;
|
|
|
1240
|
|
|
1241 return NGX_OK;
|
|
|
1242
|
|
|
1243 args:
|
|
|
1244
|
|
|
1245 while (p < r->uri_end) {
|
|
|
1246 if (*p++ != '#') {
|
|
|
1247 continue;
|
|
|
1248 }
|
|
|
1249
|
|
|
1250 r->args.len = p - 1 - r->args_start;
|
|
|
1251 r->args.data = r->args_start;
|
|
|
1252 r->args_start = NULL;
|
|
|
1253
|
|
|
1254 break;
|
|
|
1255 }
|
|
|
1256
|
|
|
1257 r->uri.len = u - r->uri.data;
|
|
0
|
1258
|
|
|
1259 if (r->uri_ext) {
|
|
|
1260 r->exten.len = u - r->uri_ext;
|
|
10
|
1261 r->exten.data = r->uri_ext;
|
|
0
|
1262 }
|
|
|
1263
|
|
|
1264 r->uri_ext = NULL;
|
|
|
1265
|
|
|
1266 return NGX_OK;
|
|
|
1267 }
|
|
58
|
1268
|
|
|
1269
|
|
|
1270 ngx_int_t
|
|
122
|
1271 ngx_http_parse_unsafe_uri(ngx_http_request_t *r, ngx_str_t *uri,
|
|
|
1272 ngx_str_t *args, ngx_uint_t *flags)
|
|
|
1273 {
|
|
|
1274 u_char ch, *p;
|
|
|
1275 size_t len;
|
|
|
1276
|
|
|
1277 len = uri->len;
|
|
|
1278 p = uri->data;
|
|
|
1279
|
|
|
1280 if (len == 0 || p[0] == '?') {
|
|
|
1281 goto unsafe;
|
|
|
1282 }
|
|
|
1283
|
|
|
1284 if (p[0] == '.' && len == 3 && p[1] == '.' && (p[2] == '/'
|
|
|
1285 #if (NGX_WIN32)
|
|
|
1286 || p[2] == '\\'
|
|
|
1287 #endif
|
|
|
1288 ))
|
|
|
1289 {
|
|
|
1290 goto unsafe;
|
|
|
1291 }
|
|
|
1292
|
|
|
1293 for ( /* void */ ; len; len--) {
|
|
|
1294
|
|
|
1295 ch = *p++;
|
|
|
1296
|
|
254
|
1297 if (usual[ch >> 5] & (1 << (ch & 0x1f))) {
|
|
|
1298 continue;
|
|
|
1299 }
|
|
|
1300
|
|
122
|
1301 if (ch == '?') {
|
|
|
1302 args->len = len - 1;
|
|
|
1303 args->data = p;
|
|
|
1304 uri->len -= len;
|
|
|
1305
|
|
|
1306 return NGX_OK;
|
|
|
1307 }
|
|
|
1308
|
|
|
1309 if (ch == '\0') {
|
|
|
1310 *flags |= NGX_HTTP_ZERO_IN_URI;
|
|
|
1311 continue;
|
|
|
1312 }
|
|
|
1313
|
|
254
|
1314 if ((ch == '/'
|
|
122
|
1315 #if (NGX_WIN32)
|
|
254
|
1316 || ch == '\\'
|
|
122
|
1317 #endif
|
|
254
|
1318 ) && len > 2)
|
|
122
|
1319 {
|
|
|
1320 /* detect "/../" */
|
|
|
1321
|
|
124
|
1322 if (p[0] == '.' && p[1] == '.' && p[2] == '/') {
|
|
122
|
1323 goto unsafe;
|
|
|
1324 }
|
|
|
1325
|
|
|
1326 #if (NGX_WIN32)
|
|
|
1327
|
|
|
1328 if (p[2] == '\\') {
|
|
|
1329 goto unsafe;
|
|
|
1330 }
|
|
|
1331
|
|
|
1332 if (len > 3) {
|
|
|
1333
|
|
|
1334 /* detect "/.../" */
|
|
|
1335
|
|
124
|
1336 if (p[0] == '.' && p[1] == '.' && p[2] == '.'
|
|
|
1337 && (p[3] == '/' || p[3] == '\\'))
|
|
|
1338 {
|
|
122
|
1339 goto unsafe;
|
|
|
1340 }
|
|
|
1341 }
|
|
|
1342 #endif
|
|
|
1343 }
|
|
|
1344 }
|
|
|
1345
|
|
|
1346 return NGX_OK;
|
|
|
1347
|
|
|
1348 unsafe:
|
|
|
1349
|
|
|
1350 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
1351 "unsafe URI \"%V\" was detected", uri);
|
|
|
1352
|
|
|
1353 return NGX_ERROR;
|
|
|
1354 }
|
|
|
1355
|
|
|
1356
|
|
|
1357 ngx_int_t
|
|
58
|
1358 ngx_http_parse_multi_header_lines(ngx_array_t *headers, ngx_str_t *name,
|
|
|
1359 ngx_str_t *value)
|
|
|
1360 {
|
|
|
1361 ngx_uint_t i;
|
|
|
1362 u_char *start, *last, *end, ch;
|
|
|
1363 ngx_table_elt_t **h;
|
|
|
1364
|
|
|
1365 h = headers->elts;
|
|
|
1366
|
|
|
1367 for (i = 0; i < headers->nelts; i++) {
|
|
|
1368
|
|
|
1369 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, headers->pool->log, 0,
|
|
|
1370 "parse header: \"%V: %V\"", &h[i]->key, &h[i]->value);
|
|
|
1371
|
|
|
1372 if (name->len > h[i]->value.len) {
|
|
|
1373 continue;
|
|
|
1374 }
|
|
126
|
1375
|
|
58
|
1376 start = h[i]->value.data;
|
|
|
1377 end = h[i]->value.data + h[i]->value.len;
|
|
|
1378
|
|
|
1379 while (start < end) {
|
|
|
1380
|
|
|
1381 if (ngx_strncasecmp(start, name->data, name->len) != 0) {
|
|
|
1382 goto skip;
|
|
|
1383 }
|
|
|
1384
|
|
|
1385 for (start += name->len; start < end && *start == ' '; start++) {
|
|
|
1386 /* void */
|
|
|
1387 }
|
|
|
1388
|
|
|
1389 if (value == NULL) {
|
|
|
1390 if (start == end || *start == ',') {
|
|
|
1391 return i;
|
|
|
1392 }
|
|
|
1393
|
|
|
1394 goto skip;
|
|
|
1395 }
|
|
|
1396
|
|
|
1397 if (start == end || *start++ != '=') {
|
|
|
1398 /* the invalid header value */
|
|
|
1399 goto skip;
|
|
|
1400 }
|
|
|
1401
|
|
|
1402 while (start < end && *start == ' ') { start++; }
|
|
|
1403
|
|
|
1404 for (last = start; last < end && *last != ';'; last++) {
|
|
|
1405 /* void */
|
|
|
1406 }
|
|
|
1407
|
|
|
1408 value->len = last - start;
|
|
|
1409 value->data = start;
|
|
|
1410
|
|
|
1411 return i;
|
|
|
1412
|
|
|
1413 skip:
|
|
122
|
1414
|
|
58
|
1415 while (start < end) {
|
|
|
1416 ch = *start++;
|
|
|
1417 if (ch == ';' || ch == ',') {
|
|
|
1418 break;
|
|
|
1419 }
|
|
|
1420 }
|
|
|
1421
|
|
|
1422 while (start < end && *start == ' ') { start++; }
|
|
|
1423 }
|
|
|
1424 }
|
|
|
1425
|
|
|
1426 return NGX_DECLINED;
|
|
|
1427 }
|
