Mercurial > hg > nginx
annotate src/http/ngx_http_script.c @ 631:5d2b8078c1c2 release-0.3.37
nginx-0.3.37-RELEASE import
*) Feature: the "limit_except" directive.
*) Feature: the "if" directive supports the "!~", "!~*", "-f", and
"!-f" operators.
*) Feature: the ngx_http_perl_module supports the $r->request_body
method.
*) Bugfix: in the ngx_http_addition_filter_module.
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Fri, 07 Apr 2006 14:08:04 +0000 |
parents | 0216fd1471f3 |
children | e60fe4cf1d4e |
rev | line source |
---|---|
441
da8c5707af39
nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents:
99
diff
changeset
|
1 |
da8c5707af39
nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents:
99
diff
changeset
|
2 /* |
444
42d11f017717
nginx-0.1.0-2004-09-29-20:00:49 import; remove years from copyright
Igor Sysoev <igor@sysoev.ru>
parents:
441
diff
changeset
|
3 * Copyright (C) Igor Sysoev |
441
da8c5707af39
nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents:
99
diff
changeset
|
4 */ |
da8c5707af39
nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents:
99
diff
changeset
|
5 |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
6 |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
7 #include <ngx_config.h> |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
8 #include <ngx_core.h> |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
9 #include <ngx_http.h> |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
10 |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
11 |
509 | 12 #define ngx_http_script_exit (u_char *) &ngx_http_script_exit_code |
13 | |
14 static uintptr_t ngx_http_script_exit_code = (uintptr_t) NULL; | |
15 | |
16 | |
17 ngx_uint_t | |
18 ngx_http_script_variables_count(ngx_str_t *value) | |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
19 { |
509 | 20 ngx_uint_t i, n; |
507 | 21 |
509 | 22 for (n = 0, i = 0; i < value->len; i++) { |
23 if (value->data[i] == '$') { | |
24 n++; | |
25 } | |
507 | 26 } |
27 | |
509 | 28 return n; |
29 } | |
30 | |
31 | |
32 ngx_int_t | |
33 ngx_http_script_compile(ngx_http_script_compile_t *sc) | |
34 { | |
35 u_char ch; | |
36 size_t size; | |
573 | 37 ngx_int_t index, *p; |
509 | 38 ngx_str_t name; |
39 uintptr_t *code; | |
40 ngx_uint_t i, n, bracket; | |
41 ngx_http_script_var_code_t *var_code; | |
42 ngx_http_script_copy_code_t *copy; | |
43 ngx_http_script_copy_capture_code_t *copy_capture; | |
44 | |
573 | 45 if (sc->flushes && *sc->flushes == NULL) { |
46 n = sc->variables ? sc->variables : 1; | |
47 *sc->flushes = ngx_array_create(sc->cf->pool, n, sizeof(ngx_uint_t)); | |
48 if (*sc->flushes == NULL) { | |
49 return NGX_ERROR; | |
50 } | |
51 } | |
52 | |
53 | |
509 | 54 if (*sc->lengths == NULL) { |
55 n = sc->variables * (2 * sizeof(ngx_http_script_copy_code_t) | |
56 + sizeof(ngx_http_script_var_code_t)) | |
57 + sizeof(uintptr_t); | |
58 | |
59 *sc->lengths = ngx_array_create(sc->cf->pool, n, 1); | |
60 if (*sc->lengths == NULL) { | |
61 return NGX_ERROR; | |
62 } | |
63 } | |
64 | |
65 | |
66 if (*sc->values == NULL) { | |
67 n = (sc->variables * (2 * sizeof(ngx_http_script_copy_code_t) | |
68 + sizeof(ngx_http_script_var_code_t)) | |
69 + sizeof(uintptr_t) | |
70 + sc->source->len | |
71 + sizeof(uintptr_t) - 1) | |
72 & ~(sizeof(uintptr_t) - 1); | |
73 | |
74 *sc->values = ngx_array_create(sc->cf->pool, n, 1); | |
75 if (*sc->values == NULL) { | |
507 | 76 return NGX_ERROR; |
77 } | |
78 } | |
79 | |
509 | 80 sc->variables = 0; |
81 | |
82 for (i = 0; i < sc->source->len; /* void */ ) { | |
83 | |
84 name.len = 0; | |
85 | |
86 if (sc->source->data[i] == '$') { | |
87 | |
88 if (++i == sc->source->len) { | |
89 goto invalid_variable; | |
90 } | |
91 | |
92 if (sc->source->data[i] >= '1' && sc->source->data[i] <= '9') { | |
93 | |
94 copy_capture = ngx_http_script_add_code(*sc->lengths, | |
95 sizeof(ngx_http_script_copy_capture_code_t), | |
96 NULL); | |
97 if (copy_capture == NULL) { | |
98 return NGX_ERROR; | |
99 } | |
100 | |
101 copy_capture->code = (ngx_http_script_code_pt) | |
102 ngx_http_script_copy_capture_len_code; | |
103 copy_capture->n = 2 * (sc->source->data[i] - '0'); | |
104 | |
105 copy_capture = ngx_http_script_add_code(*sc->values, | |
106 sizeof(ngx_http_script_copy_capture_code_t), | |
107 &sc->main); | |
108 if (copy_capture == NULL) { | |
109 return NGX_ERROR; | |
110 } | |
111 | |
112 copy_capture->code = ngx_http_script_copy_capture_code; | |
113 copy_capture->n = sc->source->data[i] - '0'; | |
114 | |
115 if (sc->ncaptures < copy_capture->n) { | |
116 sc->ncaptures = copy_capture->n; | |
117 } | |
118 | |
119 copy_capture->n *= 2; | |
507 | 120 |
509 | 121 i++; |
122 | |
123 continue; | |
124 } | |
125 | |
126 if (sc->source->data[i] == '{') { | |
127 bracket = 1; | |
128 | |
129 if (++i == sc->source->len) { | |
130 goto invalid_variable; | |
131 } | |
132 | |
133 name.data = &sc->source->data[i]; | |
134 | |
135 } else { | |
136 bracket = 0; | |
137 name.data = &sc->source->data[i]; | |
138 } | |
139 | |
140 for ( /* void */ ; i < sc->source->len; i++, name.len++) { | |
141 ch = sc->source->data[i]; | |
507 | 142 |
509 | 143 if (ch == '}' && bracket) { |
144 i++; | |
145 bracket = 0; | |
146 break; | |
147 } | |
148 | |
149 if ((ch >= 'A' && ch <= 'Z') | |
150 || (ch >= 'a' && ch <= 'z') | |
151 || (ch >= '0' && ch <= '9') | |
152 || ch == '_') | |
153 { | |
154 continue; | |
155 } | |
156 | |
157 break; | |
158 } | |
159 | |
160 if (bracket) { | |
161 ngx_conf_log_error(NGX_LOG_EMERG, sc->cf, 0, | |
162 "the closing bracket in \"%V\" " | |
163 "variable is missing", &name); | |
507 | 164 return NGX_ERROR; |
165 } | |
166 | |
509 | 167 if (name.len == 0) { |
168 goto invalid_variable; | |
169 } | |
507 | 170 |
509 | 171 sc->variables++; |
507 | 172 |
509 | 173 index = ngx_http_get_variable_index(sc->cf, &name); |
174 | |
175 if (index == NGX_ERROR) { | |
507 | 176 return NGX_ERROR; |
177 } | |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
178 |
573 | 179 if (sc->flushes) { |
180 p = ngx_array_push(*sc->flushes); | |
181 if (p == NULL) { | |
182 return NGX_ERROR; | |
183 } | |
184 | |
185 *p = index; | |
186 } | |
187 | |
509 | 188 var_code = ngx_http_script_add_code(*sc->lengths, |
189 sizeof(ngx_http_script_var_code_t), | |
190 NULL); | |
507 | 191 if (var_code == NULL) { |
192 return NGX_ERROR; | |
193 } | |
194 | |
195 var_code->code = (ngx_http_script_code_pt) | |
509 | 196 ngx_http_script_copy_var_len_code; |
197 var_code->index = (uintptr_t) index; | |
507 | 198 |
199 | |
509 | 200 var_code = ngx_http_script_add_code(*sc->values, |
201 sizeof(ngx_http_script_var_code_t), | |
202 &sc->main); | |
507 | 203 if (var_code == NULL) { |
204 return NGX_ERROR; | |
205 } | |
206 | |
509 | 207 var_code->code = ngx_http_script_copy_var_code; |
208 var_code->index = (uintptr_t) index; | |
209 | |
210 continue; | |
211 } | |
507 | 212 |
509 | 213 if (sc->source->data[i] == '?' && sc->compile_args) { |
214 sc->args = 1; | |
215 sc->compile_args = 0; | |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
216 |
509 | 217 code = ngx_http_script_add_code(*sc->values, sizeof(uintptr_t), |
218 &sc->main); | |
219 if (code == NULL) { | |
507 | 220 return NGX_ERROR; |
221 } | |
222 | |
509 | 223 *code = (uintptr_t) ngx_http_script_start_args_code; |
224 | |
225 i++; | |
226 | |
507 | 227 continue; |
228 } | |
229 | |
509 | 230 name.data = &sc->source->data[i]; |
231 | |
232 while (i < sc->source->len | |
233 && sc->source->data[i] != '$' | |
234 && !(sc->source->data[i] == '?' && sc->compile_args)) | |
235 { | |
236 i++; | |
237 name.len++; | |
238 } | |
239 | |
240 sc->size += name.len; | |
241 | |
242 copy = ngx_http_script_add_code(*sc->lengths, | |
243 sizeof(ngx_http_script_copy_code_t), | |
244 NULL); | |
245 if (copy == NULL) { | |
507 | 246 return NGX_ERROR; |
247 } | |
509 | 248 |
249 copy->code = (ngx_http_script_code_pt) ngx_http_script_copy_len_code; | |
250 copy->len = name.len; | |
251 | |
252 size = (sizeof(ngx_http_script_copy_code_t) + name.len | |
253 + sizeof(uintptr_t) - 1) | |
254 & ~(sizeof(uintptr_t) - 1); | |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
255 |
509 | 256 copy = ngx_http_script_add_code(*sc->values, size, &sc->main); |
257 if (copy == NULL) { | |
258 return NGX_ERROR; | |
259 } | |
260 | |
261 copy->code = ngx_http_script_copy_code; | |
262 copy->len = name.len; | |
263 | |
264 ngx_memcpy((u_char *) copy + sizeof(ngx_http_script_copy_code_t), | |
265 name.data, name.len); | |
507 | 266 } |
267 | |
509 | 268 if (sc->complete_lengths) { |
269 code = ngx_http_script_add_code(*sc->lengths, sizeof(uintptr_t), NULL); | |
270 if (code == NULL) { | |
271 return NGX_ERROR; | |
272 } | |
507 | 273 |
509 | 274 *code = (uintptr_t) NULL; |
507 | 275 } |
276 | |
509 | 277 if (sc->complete_values) { |
278 code = ngx_http_script_add_code(*sc->values, sizeof(uintptr_t), | |
279 &sc->main); | |
280 if (code == NULL) { | |
281 return NGX_ERROR; | |
282 } | |
283 | |
284 *code = (uintptr_t) NULL; | |
285 } | |
507 | 286 |
287 return NGX_OK; | |
509 | 288 |
289 invalid_variable: | |
290 | |
291 ngx_conf_log_error(NGX_LOG_EMERG, sc->cf, 0, "invalid variable name"); | |
292 | |
293 return NGX_ERROR; | |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
294 } |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
295 |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
296 |
623 | 297 u_char * |
298 ngx_http_script_run(ngx_http_request_t *r, ngx_str_t *value, | |
299 void *code_lengths, size_t len, void *code_values) | |
300 { | |
301 ngx_http_script_code_pt code; | |
302 ngx_http_script_len_code_pt lcode; | |
303 ngx_http_script_engine_t e; | |
304 | |
305 ngx_memzero(&e, sizeof(ngx_http_script_engine_t)); | |
306 | |
307 e.ip = code_lengths; | |
308 e.request = r; | |
309 e.flushed = 1; | |
310 | |
311 while (*(uintptr_t *) e.ip) { | |
312 lcode = *(ngx_http_script_len_code_pt *) e.ip; | |
313 len += lcode(&e); | |
314 } | |
315 | |
316 | |
317 value->len = len; | |
318 value->data = ngx_palloc(r->pool, len); | |
319 if (value->data == NULL) { | |
320 return NULL; | |
321 } | |
322 | |
323 e.ip = code_values; | |
324 e.pos = value->data; | |
325 | |
326 while (*(uintptr_t *) e.ip) { | |
327 code = *(ngx_http_script_code_pt *) e.ip; | |
328 code((ngx_http_script_engine_t *) &e); | |
329 } | |
330 | |
331 return e.pos; | |
332 } | |
333 | |
334 | |
573 | 335 void |
336 ngx_http_script_flush_no_cachable_variables(ngx_http_request_t *r, | |
337 ngx_array_t *indices) | |
338 { | |
339 ngx_uint_t n, *index; | |
340 | |
341 if (indices) { | |
342 index = indices->elts; | |
343 for (n = 0; n < indices->nelts; n++) { | |
344 if (r->variables[index[n]].no_cachable) { | |
345 r->variables[index[n]].valid = 0; | |
346 r->variables[index[n]].not_found = 0; | |
347 } | |
348 } | |
349 } | |
350 } | |
351 | |
352 | |
509 | 353 void * |
507 | 354 ngx_http_script_start_code(ngx_pool_t *pool, ngx_array_t **codes, size_t size) |
479 | 355 { |
507 | 356 if (*codes == NULL) { |
357 *codes = ngx_array_create(pool, 256, 1); | |
358 if (*codes == NULL) { | |
359 return NULL; | |
360 } | |
361 } | |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
362 |
507 | 363 return ngx_array_push_n(*codes, size); |
364 } | |
365 | |
509 | 366 |
367 void * | |
368 ngx_http_script_add_code(ngx_array_t *codes, size_t size, void *code) | |
369 { | |
370 u_char *elts, **p; | |
371 void *new; | |
372 | |
373 elts = codes->elts; | |
374 | |
375 new = ngx_array_push_n(codes, size); | |
376 if (new == NULL) { | |
377 return NGX_CONF_ERROR; | |
378 } | |
379 | |
380 if (code) { | |
381 if (elts != codes->elts) { | |
382 p = code; | |
383 *p += (u_char *) codes->elts - elts; | |
384 } | |
385 } | |
386 | |
387 return new; | |
388 } | |
507 | 389 |
479 | 390 |
507 | 391 size_t |
509 | 392 ngx_http_script_copy_len_code(ngx_http_script_engine_t *e) |
507 | 393 { |
394 ngx_http_script_copy_code_t *code; | |
479 | 395 |
509 | 396 code = (ngx_http_script_copy_code_t *) e->ip; |
507 | 397 |
509 | 398 e->ip += sizeof(ngx_http_script_copy_code_t); |
507 | 399 |
400 return code->len; | |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
401 } |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
402 |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
403 |
507 | 404 void |
509 | 405 ngx_http_script_copy_code(ngx_http_script_engine_t *e) |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
406 { |
507 | 407 ngx_http_script_copy_code_t *code; |
408 | |
509 | 409 code = (ngx_http_script_copy_code_t *) e->ip; |
410 | |
411 if (!e->skip) { | |
573 | 412 e->pos = ngx_copy(e->pos, e->ip + sizeof(ngx_http_script_copy_code_t), |
413 code->len); | |
509 | 414 } |
507 | 415 |
509 | 416 e->ip += sizeof(ngx_http_script_copy_code_t) |
417 + ((code->len + sizeof(uintptr_t) - 1) & ~(sizeof(uintptr_t) - 1)); | |
507 | 418 |
509 | 419 if (e->log) { |
420 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
421 "http script copy: \"%V\"", &e->buf); | |
422 } | |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
423 } |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
424 |
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
425 |
507 | 426 size_t |
509 | 427 ngx_http_script_copy_var_len_code(ngx_http_script_engine_t *e) |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
428 { |
507 | 429 ngx_http_variable_value_t *value; |
430 ngx_http_script_var_code_t *code; | |
431 | |
509 | 432 code = (ngx_http_script_var_code_t *) e->ip; |
507 | 433 |
509 | 434 e->ip += sizeof(ngx_http_script_var_code_t); |
507 | 435 |
573 | 436 if (e->flushed) { |
437 value = ngx_http_get_indexed_variable(e->request, code->index); | |
507 | 438 |
573 | 439 } else { |
440 value = ngx_http_get_flushed_variable(e->request, code->index); | |
441 } | |
442 | |
443 if (value && !value->not_found) { | |
444 return value->len; | |
507 | 445 } |
446 | |
553 | 447 return 0; |
99
a059e1aa65d4
nginx-0.0.1-2003-06-02-19:24:30 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
448 } |
479 | 449 |
450 | |
507 | 451 void |
509 | 452 ngx_http_script_copy_var_code(ngx_http_script_engine_t *e) |
479 | 453 { |
507 | 454 ngx_http_variable_value_t *value; |
455 ngx_http_script_var_code_t *code; | |
456 | |
509 | 457 code = (ngx_http_script_var_code_t *) e->ip; |
458 | |
459 e->ip += sizeof(ngx_http_script_var_code_t); | |
460 | |
461 if (!e->skip) { | |
573 | 462 |
463 if (e->flushed) { | |
464 value = ngx_http_get_indexed_variable(e->request, code->index); | |
509 | 465 |
573 | 466 } else { |
467 value = ngx_http_get_flushed_variable(e->request, code->index); | |
468 } | |
469 | |
470 if (value && !value->not_found) { | |
471 e->pos = ngx_copy(e->pos, value->data, value->len); | |
509 | 472 |
553 | 473 if (e->log) { |
474 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, | |
475 e->request->connection->log, 0, | |
476 "http script var: \"%V\"", &e->buf); | |
477 } | |
509 | 478 } |
479 } | |
480 } | |
481 | |
482 | |
483 size_t | |
484 ngx_http_script_copy_capture_len_code(ngx_http_script_engine_t *e) | |
485 { | |
486 ngx_http_script_copy_capture_code_t *code; | |
487 | |
488 code = (ngx_http_script_copy_capture_code_t *) e->ip; | |
489 | |
490 e->ip += sizeof(ngx_http_script_copy_capture_code_t); | |
491 | |
515 | 492 if (code->n < e->ncaptures) { |
493 if ((e->args || e->quote) | |
494 && (e->request->quoted_uri || e->request->plus_in_uri)) | |
495 { | |
496 return e->captures[code->n + 1] - e->captures[code->n] | |
497 + ngx_escape_uri(NULL, | |
498 &e->line.data[e->captures[code->n]], | |
509 | 499 e->captures[code->n + 1] - e->captures[code->n], |
500 NGX_ESCAPE_ARGS); | |
515 | 501 } else { |
502 return e->captures[code->n + 1] - e->captures[code->n]; | |
503 } | |
509 | 504 } |
515 | 505 |
506 return 0; | |
509 | 507 } |
508 | |
509 | |
510 void | |
511 ngx_http_script_copy_capture_code(ngx_http_script_engine_t *e) | |
512 { | |
513 ngx_http_script_copy_capture_code_t *code; | |
514 | |
515 code = (ngx_http_script_copy_capture_code_t *) e->ip; | |
516 | |
517 e->ip += sizeof(ngx_http_script_copy_capture_code_t); | |
507 | 518 |
515 | 519 if (code->n < e->ncaptures) { |
520 if ((e->args || e->quote) | |
521 && (e->request->quoted_uri || e->request->plus_in_uri)) | |
522 { | |
523 e->pos = (u_char *) ngx_escape_uri(e->pos, | |
524 &e->line.data[e->captures[code->n]], | |
509 | 525 e->captures[code->n + 1] - e->captures[code->n], |
526 NGX_ESCAPE_ARGS); | |
515 | 527 } else { |
573 | 528 e->pos = ngx_copy(e->pos, |
529 &e->line.data[e->captures[code->n]], | |
530 e->captures[code->n + 1] - e->captures[code->n]); | |
515 | 531 } |
509 | 532 } |
533 | |
534 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
535 "http script capture: \"%V\"", &e->buf); | |
536 } | |
537 | |
538 | |
539 void | |
540 ngx_http_script_start_args_code(ngx_http_script_engine_t *e) | |
541 { | |
542 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
543 "http script args"); | |
577 | 544 |
509 | 545 e->args = e->pos; |
546 e->ip += sizeof(uintptr_t); | |
547 } | |
548 | |
549 | |
517 | 550 |
551 #if (NGX_PCRE) | |
552 | |
509 | 553 void |
554 ngx_http_script_regex_start_code(ngx_http_script_engine_t *e) | |
555 { | |
556 size_t len; | |
557 ngx_int_t rc; | |
558 ngx_uint_t n; | |
559 ngx_http_request_t *r; | |
560 ngx_http_script_engine_t le; | |
561 ngx_http_script_len_code_pt lcode; | |
562 ngx_http_script_regex_code_t *code; | |
563 | |
564 code = (ngx_http_script_regex_code_t *) e->ip; | |
565 | |
566 r = e->request; | |
567 | |
568 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
569 "http script regex: \"%V\"", &code->name); | |
570 | |
571 if (code->uri) { | |
515 | 572 e->line = r->uri; |
509 | 573 } else { |
574 e->sp--; | |
573 | 575 e->line.len = e->sp->len; |
576 e->line.data = e->sp->data; | |
509 | 577 } |
507 | 578 |
515 | 579 rc = ngx_regex_exec(code->regex, &e->line, e->captures, code->ncaptures); |
509 | 580 |
581 if (rc == NGX_REGEX_NO_MATCHED) { | |
582 if (e->log) { | |
583 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0, | |
515 | 584 "\"%V\" does not match \"%V\"", |
585 &code->name, &e->line); | |
509 | 586 } |
587 | |
515 | 588 e->ncaptures = 0; |
589 | |
509 | 590 if (code->test) { |
631 | 591 if (code->negative_test) { |
592 e->sp->len = 1; | |
593 e->sp->data = (u_char *) "1"; | |
594 | |
595 } else { | |
596 e->sp->len = 0; | |
597 e->sp->data = (u_char *) ""; | |
598 } | |
599 | |
509 | 600 e->sp++; |
601 | |
602 e->ip += sizeof(ngx_http_script_regex_code_t); | |
603 return; | |
604 } | |
605 | |
606 e->ip += code->next; | |
607 return; | |
608 } | |
609 | |
610 if (rc < 0) { | |
611 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, | |
612 ngx_regex_exec_n " failed: %d on \"%V\" using \"%V\"", | |
515 | 613 rc, &e->line, &code->name); |
509 | 614 |
615 e->ip = ngx_http_script_exit; | |
616 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
617 return; | |
618 } | |
619 | |
620 if (e->log) { | |
621 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0, | |
515 | 622 "\"%V\" matches \"%V\"", &code->name, &e->line); |
509 | 623 } |
624 | |
515 | 625 e->ncaptures = code->ncaptures; |
626 | |
509 | 627 if (code->test) { |
631 | 628 if (code->negative_test) { |
629 e->sp->len = 0; | |
630 e->sp->data = (u_char *) ""; | |
631 | |
632 } else { | |
633 e->sp->len = 1; | |
634 e->sp->data = (u_char *) "1"; | |
635 } | |
636 | |
509 | 637 e->sp++; |
638 | |
639 e->ip += sizeof(ngx_http_script_regex_code_t); | |
640 return; | |
641 } | |
642 | |
643 if (code->status) { | |
644 e->status = code->status; | |
507 | 645 |
509 | 646 if (!code->redirect) { |
647 e->ip = ngx_http_script_exit; | |
648 return; | |
649 } | |
650 } | |
651 | |
652 if (code->uri) { | |
653 r->internal = 1; | |
654 r->valid_unparsed_uri = 0; | |
655 | |
656 if (code->break_cycle) { | |
657 r->valid_location = 0; | |
527 | 658 r->uri_changed = 0; |
509 | 659 |
660 } else { | |
661 r->uri_changed = 1; | |
662 } | |
663 } | |
664 | |
665 if (code->lengths == NULL) { | |
666 e->buf.len = code->size; | |
667 | |
668 if (code->uri) { | |
669 if (rc && (r->quoted_uri || r->plus_in_uri)) { | |
670 e->buf.len += 2 * ngx_escape_uri(NULL, r->uri.data, r->uri.len, | |
671 NGX_ESCAPE_ARGS); | |
672 } | |
673 } | |
674 | |
675 for (n = 1; n < (ngx_uint_t) rc; n++) { | |
676 e->buf.len += e->captures[2 * n + 1] - e->captures[2 * n]; | |
677 } | |
678 | |
679 } else { | |
680 ngx_memzero(&le, sizeof(ngx_http_script_engine_t)); | |
681 | |
682 le.ip = code->lengths->elts; | |
683 le.request = r; | |
684 le.captures = e->captures; | |
515 | 685 le.ncaptures = e->ncaptures; |
509 | 686 |
687 len = 1; /* reserve 1 byte for possible "?" */ | |
688 | |
689 while (*(uintptr_t *) le.ip) { | |
690 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
691 len += lcode(&le); | |
692 } | |
693 | |
694 e->buf.len = len; | |
695 } | |
696 | |
515 | 697 if (code->add_args && r->args.len) { |
509 | 698 e->buf.len += r->args.len + 1; |
699 } | |
700 | |
701 e->buf.data = ngx_palloc(r->pool, e->buf.len); | |
702 if (e->buf.data == NULL) { | |
703 e->ip = ngx_http_script_exit; | |
704 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
507 | 705 return; |
706 } | |
707 | |
509 | 708 e->quote = code->redirect; |
709 | |
710 e->pos = e->buf.data; | |
711 | |
712 e->ip += sizeof(ngx_http_script_regex_code_t); | |
713 } | |
714 | |
715 | |
716 void | |
717 ngx_http_script_regex_end_code(ngx_http_script_engine_t *e) | |
718 { | |
577 | 719 u_char *dst, *src; |
509 | 720 ngx_http_request_t *r; |
721 ngx_http_script_regex_end_code_t *code; | |
722 | |
723 code = (ngx_http_script_regex_end_code_t *) e->ip; | |
724 | |
725 r = e->request; | |
726 | |
727 e->quote = 0; | |
728 | |
729 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
730 "http script regex end"); | |
731 | |
732 if (code->redirect) { | |
733 | |
577 | 734 dst = e->buf.data; |
735 src = e->buf.data; | |
736 | |
601 | 737 ngx_unescape_uri(&dst, &src, e->pos - e->buf.data, NGX_UNESCAPE_URI); |
577 | 738 |
739 if (src < e->pos) { | |
740 dst = ngx_copy(dst, src, e->pos - src); | |
741 } | |
742 | |
743 e->pos = dst; | |
744 | |
745 if (code->add_args && r->args.len) { | |
509 | 746 *e->pos++ = (u_char) (code->args ? '&' : '?'); |
573 | 747 e->pos = ngx_copy(e->pos, r->args.data, r->args.len); |
509 | 748 } |
749 | |
750 e->buf.len = e->pos - e->buf.data; | |
751 | |
752 if (e->log) { | |
753 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0, | |
754 "rewritten redirect: \"%V\"", &e->buf); | |
755 } | |
756 | |
757 r->headers_out.location = ngx_list_push(&r->headers_out.headers); | |
758 if (r->headers_out.location == NULL) { | |
759 e->ip = ngx_http_script_exit; | |
760 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
761 return; | |
762 } | |
763 | |
577 | 764 r->headers_out.location->hash = 1; |
509 | 765 r->headers_out.location->key.len = sizeof("Location") - 1; |
766 r->headers_out.location->key.data = (u_char *) "Location"; | |
767 r->headers_out.location->value = e->buf; | |
768 | |
769 e->ip += sizeof(ngx_http_script_regex_end_code_t); | |
770 return; | |
771 } | |
772 | |
577 | 773 if (e->args) { |
509 | 774 e->buf.len = e->args - e->buf.data; |
775 | |
776 if (code->add_args && r->args.len) { | |
777 *e->pos++ = '&'; | |
573 | 778 e->pos = ngx_copy(e->pos, r->args.data, r->args.len); |
509 | 779 } |
780 | |
781 r->args.len = e->pos - e->args; | |
782 r->args.data = e->args; | |
783 | |
784 e->args = NULL; | |
785 | |
786 } else { | |
787 e->buf.len = e->pos - e->buf.data; | |
788 } | |
789 | |
790 if (e->log) { | |
791 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0, | |
792 "rewritten data: \"%V\", args: \"%V\"", | |
793 &e->buf, &r->args); | |
794 } | |
795 | |
796 if (code->uri) { | |
797 r->uri = e->buf; | |
798 | |
535 | 799 if (r->uri.len == 0) { |
800 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
801 "the rewritten URI has a zero length"); | |
802 e->ip = ngx_http_script_exit; | |
803 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
804 return; | |
805 } | |
806 | |
509 | 807 if (ngx_http_set_exten(r) != NGX_OK) { |
808 e->ip = ngx_http_script_exit; | |
809 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
810 return; | |
811 } | |
812 } | |
813 | |
814 e->ip += sizeof(ngx_http_script_regex_end_code_t); | |
815 } | |
816 | |
517 | 817 #endif |
818 | |
509 | 819 |
820 void | |
821 ngx_http_script_return_code(ngx_http_script_engine_t *e) | |
577 | 822 { |
509 | 823 ngx_http_script_return_code_t *code; |
577 | 824 |
509 | 825 code = (ngx_http_script_return_code_t *) e->ip; |
826 | |
827 e->status = code->status; | |
828 | |
829 e->ip += sizeof(ngx_http_script_return_code_t) - sizeof(uintptr_t); | |
479 | 830 } |
509 | 831 |
832 | |
833 void | |
527 | 834 ngx_http_script_break_code(ngx_http_script_engine_t *e) |
835 { | |
836 e->request->uri_changed = 0; | |
837 | |
838 e->ip = ngx_http_script_exit; | |
839 } | |
840 | |
841 | |
842 void | |
509 | 843 ngx_http_script_if_code(ngx_http_script_engine_t *e) |
844 { | |
845 ngx_http_script_if_code_t *code; | |
846 | |
847 code = (ngx_http_script_if_code_t *) e->ip; | |
848 | |
849 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
850 "http script if"); | |
851 | |
852 e->sp--; | |
853 | |
573 | 854 if (e->sp->len && e->sp->data[0] != '0') { |
509 | 855 if (code->loc_conf) { |
856 e->request->loc_conf = code->loc_conf; | |
535 | 857 ngx_http_update_location_config(e->request); |
509 | 858 } |
859 | |
860 e->ip += sizeof(ngx_http_script_if_code_t); | |
861 return; | |
862 } | |
863 | |
864 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
577 | 865 "http script if: false"); |
509 | 866 |
867 e->ip += code->next; | |
868 } | |
869 | |
870 | |
871 void | |
577 | 872 ngx_http_script_equal_code(ngx_http_script_engine_t *e) |
873 { | |
874 ngx_http_variable_value_t *val, *res; | |
875 | |
876 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
877 "http script equal"); | |
878 | |
879 e->sp--; | |
880 val = e->sp; | |
881 res = e->sp - 1; | |
882 | |
883 e->ip += sizeof(uintptr_t); | |
884 | |
885 if (val->len == res->len && ngx_strncmp(val->data, res->data, res->len) | |
886 == 0) | |
887 { | |
888 *res = ngx_http_variable_true_value; | |
889 return; | |
890 } | |
891 | |
892 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
893 "http script equal: no"); | |
894 | |
895 *res = ngx_http_variable_null_value; | |
896 } | |
897 | |
898 | |
899 void | |
900 ngx_http_script_not_equal_code(ngx_http_script_engine_t *e) | |
901 { | |
902 ngx_http_variable_value_t *val, *res; | |
903 | |
904 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
905 "http script not equal"); | |
906 | |
907 e->sp--; | |
908 val = e->sp; | |
909 res = e->sp - 1; | |
910 | |
911 e->ip += sizeof(uintptr_t); | |
912 | |
913 if (val->len == res->len && ngx_strncmp(val->data, res->data, res->len) | |
914 == 0) | |
915 { | |
916 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
917 "http script not equal: no"); | |
918 | |
919 *res = ngx_http_variable_null_value; | |
920 return; | |
921 } | |
922 | |
923 *res = ngx_http_variable_true_value; | |
924 } | |
925 | |
926 | |
927 void | |
631 | 928 ngx_http_script_file_code(ngx_http_script_engine_t *e) |
929 { | |
930 ngx_err_t err; | |
931 ngx_file_info_t fi; | |
932 ngx_http_variable_value_t *value; | |
933 ngx_http_script_file_code_t *code; | |
934 | |
935 value = e->sp - 1; | |
936 | |
937 code = (ngx_http_script_file_code_t *) e->ip; | |
938 e->ip += sizeof(ngx_http_script_file_code_t); | |
939 | |
940 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
941 "http script file op %p", code->op); | |
942 | |
943 if (ngx_file_info(value->data, &fi) == -1) { | |
944 err = ngx_errno; | |
945 | |
946 if (err != NGX_ENOENT && err != NGX_ENOTDIR) { | |
947 ngx_log_error(NGX_LOG_CRIT, e->request->connection->log, err, | |
948 ngx_file_info_n " \"%s\" failed", value->data); | |
949 } | |
950 | |
951 switch (code->op) { | |
952 case ngx_http_script_file_plain: | |
953 goto false; | |
954 case ngx_http_script_file_not_plain: | |
955 goto true; | |
956 } | |
957 | |
958 goto false; | |
959 } | |
960 | |
961 switch (code->op) { | |
962 case ngx_http_script_file_plain: | |
963 if (ngx_is_file(&fi)) { | |
964 goto true; | |
965 } | |
966 goto false; | |
967 | |
968 case ngx_http_script_file_not_plain: | |
969 if (ngx_is_file(&fi)) { | |
970 goto false; | |
971 } | |
972 goto true; | |
973 } | |
974 | |
975 false: | |
976 | |
977 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
978 "http script file op false"); | |
979 | |
980 *value = ngx_http_variable_null_value; | |
981 return; | |
982 | |
983 true: | |
984 | |
985 *value = ngx_http_variable_true_value; | |
986 return; | |
987 } | |
988 | |
989 | |
990 void | |
515 | 991 ngx_http_script_complex_value_code(ngx_http_script_engine_t *e) |
992 { | |
993 size_t len; | |
994 ngx_http_script_engine_t le; | |
995 ngx_http_script_len_code_pt lcode; | |
996 ngx_http_script_complex_value_code_t *code; | |
997 | |
998 code = (ngx_http_script_complex_value_code_t *) e->ip; | |
999 | |
1000 e->ip += sizeof(ngx_http_script_complex_value_code_t); | |
1001 | |
1002 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
1003 "http script complex value"); | |
1004 | |
1005 ngx_memzero(&le, sizeof(ngx_http_script_engine_t)); | |
1006 | |
1007 le.ip = code->lengths->elts; | |
1008 le.request = e->request; | |
1009 le.captures = e->captures; | |
1010 le.ncaptures = e->ncaptures; | |
1011 | |
1012 for (len = 0; *(uintptr_t *) le.ip; len += lcode(&le)) { | |
1013 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
1014 } | |
1015 | |
1016 e->buf.len = len; | |
1017 e->buf.data = ngx_palloc(e->request->pool, len); | |
1018 if (e->buf.data == NULL) { | |
1019 e->ip = ngx_http_script_exit; | |
1020 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
1021 return; | |
1022 } | |
1023 | |
1024 e->pos = e->buf.data; | |
1025 | |
577 | 1026 e->sp->len = e->buf.len; |
573 | 1027 e->sp->data = e->buf.data; |
515 | 1028 e->sp++; |
1029 } | |
1030 | |
1031 | |
1032 void | |
509 | 1033 ngx_http_script_value_code(ngx_http_script_engine_t *e) |
1034 { | |
1035 ngx_http_script_value_code_t *code; | |
1036 | |
1037 code = (ngx_http_script_value_code_t *) e->ip; | |
1038 | |
1039 e->ip += sizeof(ngx_http_script_value_code_t); | |
1040 | |
573 | 1041 e->sp->len = code->text_len; |
1042 e->sp->data = (u_char *) code->text_data; | |
577 | 1043 |
1044 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
1045 "http script value: \"%V\"", e->sp); | |
1046 | |
509 | 1047 e->sp++; |
1048 } | |
1049 | |
1050 | |
1051 void | |
1052 ngx_http_script_set_var_code(ngx_http_script_engine_t *e) | |
1053 { | |
1054 ngx_http_request_t *r; | |
1055 ngx_http_script_var_code_t *code; | |
1056 | |
1057 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
1058 "http script set var"); | |
1059 | |
1060 code = (ngx_http_script_var_code_t *) e->ip; | |
1061 | |
1062 e->ip += sizeof(ngx_http_script_var_code_t); | |
1063 | |
1064 r = e->request; | |
1065 | |
1066 e->sp--; | |
1067 | |
573 | 1068 r->variables[code->index].len = e->sp->len; |
1069 r->variables[code->index].valid = 1; | |
1070 r->variables[code->index].no_cachable = 0; | |
1071 r->variables[code->index].not_found = 0; | |
1072 r->variables[code->index].data = e->sp->data; | |
509 | 1073 } |
1074 | |
1075 | |
1076 void | |
1077 ngx_http_script_var_code(ngx_http_script_engine_t *e) | |
1078 { | |
1079 ngx_http_variable_value_t *value; | |
1080 ngx_http_script_var_code_t *code; | |
1081 | |
1082 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
1083 "http script var"); | |
1084 | |
1085 code = (ngx_http_script_var_code_t *) e->ip; | |
1086 | |
1087 e->ip += sizeof(ngx_http_script_var_code_t); | |
1088 | |
573 | 1089 value = ngx_http_get_flushed_variable(e->request, code->index); |
509 | 1090 |
573 | 1091 if (value && !value->not_found) { |
1092 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
1093 "http script var: \"%V\"", value); | |
1094 | |
553 | 1095 *e->sp = *value; |
509 | 1096 e->sp++; |
1097 | |
1098 return; | |
1099 } | |
1100 | |
577 | 1101 *e->sp = ngx_http_variable_null_value; |
509 | 1102 e->sp++; |
1103 } | |
1104 | |
1105 | |
1106 void | |
1107 ngx_http_script_nop_code(ngx_http_script_engine_t *e) | |
1108 { | |
1109 e->ip += sizeof(uintptr_t); | |
1110 } |