Mercurial > hg > nginx
annotate src/http/ngx_http_script.c @ 2547:912ce4113f21
now regex captures are per-request entities
author | Igor Sysoev <igor@sysoev.ru> |
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date | Fri, 06 Mar 2009 12:15:07 +0000 |
parents | d3357bf23a5e |
children | 2dcbcfc1a8d1 |
rev | line source |
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1 |
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2 /* |
444
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3 * Copyright (C) Igor Sysoev |
441
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4 */ |
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7 #include <ngx_config.h> |
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8 #include <ngx_core.h> |
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9 #include <ngx_http.h> |
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10 |
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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) | |
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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] == '$') { | |
24 n++; | |
25 } | |
507 | 26 } |
27 | |
509 | 28 return n; |
29 } | |
30 | |
31 | |
32 ngx_int_t | |
33 ngx_http_script_compile(ngx_http_script_compile_t *sc) | |
34 { | |
35 u_char ch; | |
36 size_t size; | |
573 | 37 ngx_int_t index, *p; |
509 | 38 ngx_str_t name; |
39 uintptr_t *code; | |
40 ngx_uint_t i, n, bracket; | |
41 ngx_http_script_var_code_t *var_code; | |
42 ngx_http_script_copy_code_t *copy; | |
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43 #if (NGX_PCRE) |
509 | 44 ngx_http_script_copy_capture_code_t *copy_capture; |
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45 #endif |
509 | 46 |
573 | 47 if (sc->flushes && *sc->flushes == NULL) { |
48 n = sc->variables ? sc->variables : 1; | |
49 *sc->flushes = ngx_array_create(sc->cf->pool, n, sizeof(ngx_uint_t)); | |
50 if (*sc->flushes == NULL) { | |
51 return NGX_ERROR; | |
52 } | |
53 } | |
54 | |
55 | |
509 | 56 if (*sc->lengths == NULL) { |
57 n = sc->variables * (2 * sizeof(ngx_http_script_copy_code_t) | |
58 + sizeof(ngx_http_script_var_code_t)) | |
59 + sizeof(uintptr_t); | |
60 | |
61 *sc->lengths = ngx_array_create(sc->cf->pool, n, 1); | |
62 if (*sc->lengths == NULL) { | |
63 return NGX_ERROR; | |
64 } | |
65 } | |
66 | |
67 | |
68 if (*sc->values == NULL) { | |
69 n = (sc->variables * (2 * sizeof(ngx_http_script_copy_code_t) | |
70 + sizeof(ngx_http_script_var_code_t)) | |
71 + sizeof(uintptr_t) | |
72 + sc->source->len | |
73 + sizeof(uintptr_t) - 1) | |
74 & ~(sizeof(uintptr_t) - 1); | |
75 | |
76 *sc->values = ngx_array_create(sc->cf->pool, n, 1); | |
77 if (*sc->values == NULL) { | |
507 | 78 return NGX_ERROR; |
79 } | |
80 } | |
81 | |
509 | 82 sc->variables = 0; |
83 | |
84 for (i = 0; i < sc->source->len; /* void */ ) { | |
85 | |
86 name.len = 0; | |
87 | |
88 if (sc->source->data[i] == '$') { | |
89 | |
90 if (++i == sc->source->len) { | |
91 goto invalid_variable; | |
92 } | |
93 | |
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94 #if (NGX_PCRE) |
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95 |
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96 /* NGX_HTTP_MAX_CAPTURES is 9 */ |
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97 |
509 | 98 if (sc->source->data[i] >= '1' && sc->source->data[i] <= '9') { |
99 | |
641 | 100 n = sc->source->data[i] - '0'; |
101 | |
102 if (sc->captures_mask & (1 << n)) { | |
103 sc->dup_capture = 1; | |
104 } | |
105 | |
106 sc->captures_mask |= 1 << n; | |
107 | |
509 | 108 copy_capture = ngx_http_script_add_code(*sc->lengths, |
109 sizeof(ngx_http_script_copy_capture_code_t), | |
110 NULL); | |
111 if (copy_capture == NULL) { | |
112 return NGX_ERROR; | |
113 } | |
114 | |
115 copy_capture->code = (ngx_http_script_code_pt) | |
116 ngx_http_script_copy_capture_len_code; | |
641 | 117 copy_capture->n = 2 * n; |
118 | |
509 | 119 |
120 copy_capture = ngx_http_script_add_code(*sc->values, | |
121 sizeof(ngx_http_script_copy_capture_code_t), | |
122 &sc->main); | |
123 if (copy_capture == NULL) { | |
124 return NGX_ERROR; | |
125 } | |
126 | |
127 copy_capture->code = ngx_http_script_copy_capture_code; | |
641 | 128 copy_capture->n = 2 * n; |
509 | 129 |
641 | 130 if (sc->ncaptures < n) { |
131 sc->ncaptures = n; | |
509 | 132 } |
133 | |
134 i++; | |
135 | |
136 continue; | |
137 } | |
138 | |
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139 #endif |
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140 |
509 | 141 if (sc->source->data[i] == '{') { |
142 bracket = 1; | |
143 | |
144 if (++i == sc->source->len) { | |
145 goto invalid_variable; | |
146 } | |
147 | |
148 name.data = &sc->source->data[i]; | |
149 | |
150 } else { | |
151 bracket = 0; | |
152 name.data = &sc->source->data[i]; | |
153 } | |
154 | |
155 for ( /* void */ ; i < sc->source->len; i++, name.len++) { | |
156 ch = sc->source->data[i]; | |
507 | 157 |
509 | 158 if (ch == '}' && bracket) { |
159 i++; | |
160 bracket = 0; | |
161 break; | |
162 } | |
163 | |
164 if ((ch >= 'A' && ch <= 'Z') | |
165 || (ch >= 'a' && ch <= 'z') | |
166 || (ch >= '0' && ch <= '9') | |
167 || ch == '_') | |
168 { | |
169 continue; | |
170 } | |
171 | |
172 break; | |
173 } | |
174 | |
175 if (bracket) { | |
176 ngx_conf_log_error(NGX_LOG_EMERG, sc->cf, 0, | |
177 "the closing bracket in \"%V\" " | |
178 "variable is missing", &name); | |
507 | 179 return NGX_ERROR; |
180 } | |
181 | |
509 | 182 if (name.len == 0) { |
183 goto invalid_variable; | |
184 } | |
507 | 185 |
509 | 186 sc->variables++; |
507 | 187 |
509 | 188 index = ngx_http_get_variable_index(sc->cf, &name); |
189 | |
190 if (index == NGX_ERROR) { | |
507 | 191 return NGX_ERROR; |
192 } | |
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193 |
573 | 194 if (sc->flushes) { |
195 p = ngx_array_push(*sc->flushes); | |
196 if (p == NULL) { | |
197 return NGX_ERROR; | |
198 } | |
199 | |
200 *p = index; | |
201 } | |
202 | |
509 | 203 var_code = ngx_http_script_add_code(*sc->lengths, |
204 sizeof(ngx_http_script_var_code_t), | |
205 NULL); | |
507 | 206 if (var_code == NULL) { |
207 return NGX_ERROR; | |
208 } | |
209 | |
210 var_code->code = (ngx_http_script_code_pt) | |
509 | 211 ngx_http_script_copy_var_len_code; |
212 var_code->index = (uintptr_t) index; | |
507 | 213 |
214 | |
509 | 215 var_code = ngx_http_script_add_code(*sc->values, |
216 sizeof(ngx_http_script_var_code_t), | |
217 &sc->main); | |
507 | 218 if (var_code == NULL) { |
219 return NGX_ERROR; | |
220 } | |
221 | |
509 | 222 var_code->code = ngx_http_script_copy_var_code; |
223 var_code->index = (uintptr_t) index; | |
224 | |
225 continue; | |
226 } | |
507 | 227 |
509 | 228 if (sc->source->data[i] == '?' && sc->compile_args) { |
229 sc->args = 1; | |
230 sc->compile_args = 0; | |
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231 |
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232 code = ngx_http_script_add_code(*sc->lengths, sizeof(uintptr_t), |
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233 NULL); |
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234 if (code == NULL) { |
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235 return NGX_ERROR; |
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236 } |
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237 |
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238 *code = (uintptr_t) ngx_http_script_mark_args_code; |
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239 |
509 | 240 code = ngx_http_script_add_code(*sc->values, sizeof(uintptr_t), |
241 &sc->main); | |
242 if (code == NULL) { | |
507 | 243 return NGX_ERROR; |
244 } | |
245 | |
509 | 246 *code = (uintptr_t) ngx_http_script_start_args_code; |
247 | |
248 i++; | |
249 | |
507 | 250 continue; |
251 } | |
252 | |
509 | 253 name.data = &sc->source->data[i]; |
254 | |
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255 while (i < sc->source->len) { |
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256 |
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257 if (sc->source->data[i] == '$') { |
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258 break; |
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259 } |
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260 |
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261 if (sc->source->data[i] == '?') { |
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262 |
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263 sc->args = 1; |
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264 |
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265 if (sc->compile_args) { |
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266 break; |
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267 } |
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268 } |
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269 |
509 | 270 i++; |
271 name.len++; | |
272 } | |
273 | |
274 sc->size += name.len; | |
275 | |
276 copy = ngx_http_script_add_code(*sc->lengths, | |
277 sizeof(ngx_http_script_copy_code_t), | |
278 NULL); | |
279 if (copy == NULL) { | |
507 | 280 return NGX_ERROR; |
281 } | |
509 | 282 |
283 copy->code = (ngx_http_script_code_pt) ngx_http_script_copy_len_code; | |
284 copy->len = name.len; | |
285 | |
286 size = (sizeof(ngx_http_script_copy_code_t) + name.len | |
287 + sizeof(uintptr_t) - 1) | |
288 & ~(sizeof(uintptr_t) - 1); | |
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289 |
509 | 290 copy = ngx_http_script_add_code(*sc->values, size, &sc->main); |
291 if (copy == NULL) { | |
292 return NGX_ERROR; | |
293 } | |
294 | |
295 copy->code = ngx_http_script_copy_code; | |
296 copy->len = name.len; | |
297 | |
298 ngx_memcpy((u_char *) copy + sizeof(ngx_http_script_copy_code_t), | |
299 name.data, name.len); | |
507 | 300 } |
301 | |
509 | 302 if (sc->complete_lengths) { |
303 code = ngx_http_script_add_code(*sc->lengths, sizeof(uintptr_t), NULL); | |
304 if (code == NULL) { | |
305 return NGX_ERROR; | |
306 } | |
507 | 307 |
509 | 308 *code = (uintptr_t) NULL; |
507 | 309 } |
310 | |
509 | 311 if (sc->complete_values) { |
312 code = ngx_http_script_add_code(*sc->values, sizeof(uintptr_t), | |
313 &sc->main); | |
314 if (code == NULL) { | |
315 return NGX_ERROR; | |
316 } | |
317 | |
318 *code = (uintptr_t) NULL; | |
319 } | |
507 | 320 |
321 return NGX_OK; | |
509 | 322 |
323 invalid_variable: | |
324 | |
325 ngx_conf_log_error(NGX_LOG_EMERG, sc->cf, 0, "invalid variable name"); | |
326 | |
327 return NGX_ERROR; | |
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328 } |
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329 |
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330 |
623 | 331 u_char * |
332 ngx_http_script_run(ngx_http_request_t *r, ngx_str_t *value, | |
333 void *code_lengths, size_t len, void *code_values) | |
334 { | |
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335 ngx_uint_t i; |
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336 ngx_http_script_code_pt code; |
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337 ngx_http_script_len_code_pt lcode; |
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338 ngx_http_script_engine_t e; |
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339 ngx_http_core_main_conf_t *cmcf; |
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340 |
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341 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module); |
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342 |
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343 for (i = 0; i < cmcf->variables.nelts; i++) { |
1565 | 344 if (r->variables[i].no_cacheable) { |
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345 r->variables[i].valid = 0; |
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346 r->variables[i].not_found = 0; |
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347 } |
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348 } |
623 | 349 |
350 ngx_memzero(&e, sizeof(ngx_http_script_engine_t)); | |
351 | |
352 e.ip = code_lengths; | |
353 e.request = r; | |
354 e.flushed = 1; | |
355 | |
356 while (*(uintptr_t *) e.ip) { | |
357 lcode = *(ngx_http_script_len_code_pt *) e.ip; | |
358 len += lcode(&e); | |
359 } | |
360 | |
361 | |
362 value->len = len; | |
2049 | 363 value->data = ngx_pnalloc(r->pool, len); |
623 | 364 if (value->data == NULL) { |
365 return NULL; | |
366 } | |
367 | |
368 e.ip = code_values; | |
369 e.pos = value->data; | |
370 | |
371 while (*(uintptr_t *) e.ip) { | |
372 code = *(ngx_http_script_code_pt *) e.ip; | |
373 code((ngx_http_script_engine_t *) &e); | |
374 } | |
375 | |
376 return e.pos; | |
377 } | |
378 | |
379 | |
573 | 380 void |
1565 | 381 ngx_http_script_flush_no_cacheable_variables(ngx_http_request_t *r, |
573 | 382 ngx_array_t *indices) |
383 { | |
384 ngx_uint_t n, *index; | |
385 | |
386 if (indices) { | |
387 index = indices->elts; | |
388 for (n = 0; n < indices->nelts; n++) { | |
1565 | 389 if (r->variables[index[n]].no_cacheable) { |
573 | 390 r->variables[index[n]].valid = 0; |
391 r->variables[index[n]].not_found = 0; | |
392 } | |
393 } | |
394 } | |
395 } | |
396 | |
397 | |
509 | 398 void * |
507 | 399 ngx_http_script_start_code(ngx_pool_t *pool, ngx_array_t **codes, size_t size) |
479 | 400 { |
507 | 401 if (*codes == NULL) { |
402 *codes = ngx_array_create(pool, 256, 1); | |
403 if (*codes == NULL) { | |
404 return NULL; | |
405 } | |
406 } | |
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407 |
507 | 408 return ngx_array_push_n(*codes, size); |
409 } | |
410 | |
509 | 411 |
412 void * | |
413 ngx_http_script_add_code(ngx_array_t *codes, size_t size, void *code) | |
414 { | |
415 u_char *elts, **p; | |
416 void *new; | |
417 | |
418 elts = codes->elts; | |
419 | |
420 new = ngx_array_push_n(codes, size); | |
421 if (new == NULL) { | |
422 return NGX_CONF_ERROR; | |
423 } | |
424 | |
425 if (code) { | |
426 if (elts != codes->elts) { | |
427 p = code; | |
428 *p += (u_char *) codes->elts - elts; | |
429 } | |
430 } | |
431 | |
432 return new; | |
433 } | |
507 | 434 |
479 | 435 |
507 | 436 size_t |
509 | 437 ngx_http_script_copy_len_code(ngx_http_script_engine_t *e) |
507 | 438 { |
439 ngx_http_script_copy_code_t *code; | |
479 | 440 |
509 | 441 code = (ngx_http_script_copy_code_t *) e->ip; |
507 | 442 |
509 | 443 e->ip += sizeof(ngx_http_script_copy_code_t); |
507 | 444 |
445 return code->len; | |
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446 } |
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447 |
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448 |
507 | 449 void |
509 | 450 ngx_http_script_copy_code(ngx_http_script_engine_t *e) |
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451 { |
2393 | 452 u_char *p; |
507 | 453 ngx_http_script_copy_code_t *code; |
454 | |
509 | 455 code = (ngx_http_script_copy_code_t *) e->ip; |
456 | |
2393 | 457 p = e->pos; |
458 | |
509 | 459 if (!e->skip) { |
2393 | 460 e->pos = ngx_copy(p, e->ip + sizeof(ngx_http_script_copy_code_t), |
573 | 461 code->len); |
509 | 462 } |
507 | 463 |
509 | 464 e->ip += sizeof(ngx_http_script_copy_code_t) |
465 + ((code->len + sizeof(uintptr_t) - 1) & ~(sizeof(uintptr_t) - 1)); | |
507 | 466 |
2393 | 467 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, |
468 "http script copy: \"%*s\"", e->pos - p, p); | |
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469 } |
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470 |
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471 |
507 | 472 size_t |
509 | 473 ngx_http_script_copy_var_len_code(ngx_http_script_engine_t *e) |
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474 { |
507 | 475 ngx_http_variable_value_t *value; |
476 ngx_http_script_var_code_t *code; | |
477 | |
509 | 478 code = (ngx_http_script_var_code_t *) e->ip; |
507 | 479 |
509 | 480 e->ip += sizeof(ngx_http_script_var_code_t); |
507 | 481 |
573 | 482 if (e->flushed) { |
483 value = ngx_http_get_indexed_variable(e->request, code->index); | |
507 | 484 |
573 | 485 } else { |
486 value = ngx_http_get_flushed_variable(e->request, code->index); | |
487 } | |
488 | |
489 if (value && !value->not_found) { | |
490 return value->len; | |
507 | 491 } |
492 | |
553 | 493 return 0; |
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494 } |
479 | 495 |
496 | |
507 | 497 void |
509 | 498 ngx_http_script_copy_var_code(ngx_http_script_engine_t *e) |
479 | 499 { |
2393 | 500 u_char *p; |
507 | 501 ngx_http_variable_value_t *value; |
502 ngx_http_script_var_code_t *code; | |
503 | |
509 | 504 code = (ngx_http_script_var_code_t *) e->ip; |
505 | |
506 e->ip += sizeof(ngx_http_script_var_code_t); | |
507 | |
508 if (!e->skip) { | |
573 | 509 |
510 if (e->flushed) { | |
511 value = ngx_http_get_indexed_variable(e->request, code->index); | |
509 | 512 |
573 | 513 } else { |
514 value = ngx_http_get_flushed_variable(e->request, code->index); | |
515 } | |
516 | |
517 if (value && !value->not_found) { | |
2393 | 518 p = e->pos; |
519 e->pos = ngx_copy(p, value->data, value->len); | |
509 | 520 |
2393 | 521 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, |
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522 e->request->connection->log, 0, |
2393 | 523 "http script var: \"%*s\"", e->pos - p, p); |
509 | 524 } |
525 } | |
526 } | |
527 | |
528 | |
529 size_t | |
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530 ngx_http_script_mark_args_code(ngx_http_script_engine_t *e) |
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531 { |
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532 e->is_args = 1; |
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533 e->ip += sizeof(uintptr_t); |
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534 |
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535 return 1; |
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536 } |
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537 |
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538 |
509 | 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 |
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545 e->is_args = 1; |
509 | 546 e->args = e->pos; |
547 e->ip += sizeof(uintptr_t); | |
548 } | |
549 | |
550 | |
517 | 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 |
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579 if (code->ncaptures && r->captures == NULL) { |
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580 |
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581 r->captures = ngx_palloc(r->pool, |
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582 (NGX_HTTP_MAX_CAPTURES + 1) * 3 * sizeof(int)); |
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583 if (r->captures == NULL) { |
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584 e->ip = ngx_http_script_exit; |
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585 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; |
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586 return; |
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587 } |
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588 } |
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589 |
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590 rc = ngx_regex_exec(code->regex, &e->line, r->captures, code->ncaptures); |
509 | 591 |
592 if (rc == NGX_REGEX_NO_MATCHED) { | |
2397 | 593 if (e->log || (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP)) { |
509 | 594 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0, |
515 | 595 "\"%V\" does not match \"%V\"", |
596 &code->name, &e->line); | |
509 | 597 } |
598 | |
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599 r->ncaptures = 0; |
515 | 600 |
509 | 601 if (code->test) { |
631 | 602 if (code->negative_test) { |
603 e->sp->len = 1; | |
604 e->sp->data = (u_char *) "1"; | |
605 | |
606 } else { | |
607 e->sp->len = 0; | |
608 e->sp->data = (u_char *) ""; | |
609 } | |
610 | |
509 | 611 e->sp++; |
612 | |
613 e->ip += sizeof(ngx_http_script_regex_code_t); | |
614 return; | |
615 } | |
616 | |
617 e->ip += code->next; | |
618 return; | |
619 } | |
620 | |
621 if (rc < 0) { | |
622 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, | |
623 ngx_regex_exec_n " failed: %d on \"%V\" using \"%V\"", | |
515 | 624 rc, &e->line, &code->name); |
509 | 625 |
626 e->ip = ngx_http_script_exit; | |
627 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
628 return; | |
629 } | |
630 | |
2397 | 631 if (e->log || (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP)) { |
509 | 632 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0, |
515 | 633 "\"%V\" matches \"%V\"", &code->name, &e->line); |
509 | 634 } |
635 | |
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636 r->ncaptures = code->ncaptures; |
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637 r->captures_data = e->line.data; |
515 | 638 |
509 | 639 if (code->test) { |
631 | 640 if (code->negative_test) { |
641 e->sp->len = 0; | |
642 e->sp->data = (u_char *) ""; | |
643 | |
644 } else { | |
645 e->sp->len = 1; | |
646 e->sp->data = (u_char *) "1"; | |
647 } | |
648 | |
509 | 649 e->sp++; |
650 | |
651 e->ip += sizeof(ngx_http_script_regex_code_t); | |
652 return; | |
653 } | |
654 | |
655 if (code->status) { | |
656 e->status = code->status; | |
507 | 657 |
509 | 658 if (!code->redirect) { |
659 e->ip = ngx_http_script_exit; | |
660 return; | |
661 } | |
662 } | |
663 | |
664 if (code->uri) { | |
665 r->internal = 1; | |
666 r->valid_unparsed_uri = 0; | |
667 | |
668 if (code->break_cycle) { | |
669 r->valid_location = 0; | |
527 | 670 r->uri_changed = 0; |
509 | 671 |
672 } else { | |
673 r->uri_changed = 1; | |
674 } | |
675 } | |
676 | |
677 if (code->lengths == NULL) { | |
678 e->buf.len = code->size; | |
679 | |
680 if (code->uri) { | |
681 if (rc && (r->quoted_uri || r->plus_in_uri)) { | |
682 e->buf.len += 2 * ngx_escape_uri(NULL, r->uri.data, r->uri.len, | |
683 NGX_ESCAPE_ARGS); | |
684 } | |
685 } | |
686 | |
687 for (n = 1; n < (ngx_uint_t) rc; n++) { | |
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688 e->buf.len += r->captures[2 * n + 1] - r->captures[2 * n]; |
509 | 689 } |
690 | |
691 } else { | |
692 ngx_memzero(&le, sizeof(ngx_http_script_engine_t)); | |
693 | |
694 le.ip = code->lengths->elts; | |
679 | 695 le.line = e->line; |
509 | 696 le.request = r; |
679 | 697 le.quote = code->redirect; |
509 | 698 |
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699 len = 0; |
509 | 700 |
701 while (*(uintptr_t *) le.ip) { | |
702 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
703 len += lcode(&le); | |
704 } | |
705 | |
706 e->buf.len = len; | |
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707 e->is_args = le.is_args; |
509 | 708 } |
709 | |
515 | 710 if (code->add_args && r->args.len) { |
509 | 711 e->buf.len += r->args.len + 1; |
712 } | |
713 | |
2049 | 714 e->buf.data = ngx_pnalloc(r->pool, e->buf.len); |
509 | 715 if (e->buf.data == NULL) { |
716 e->ip = ngx_http_script_exit; | |
717 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
507 | 718 return; |
719 } | |
720 | |
509 | 721 e->quote = code->redirect; |
722 | |
723 e->pos = e->buf.data; | |
724 | |
725 e->ip += sizeof(ngx_http_script_regex_code_t); | |
726 } | |
727 | |
728 | |
729 void | |
730 ngx_http_script_regex_end_code(ngx_http_script_engine_t *e) | |
731 { | |
577 | 732 u_char *dst, *src; |
509 | 733 ngx_http_request_t *r; |
734 ngx_http_script_regex_end_code_t *code; | |
735 | |
736 code = (ngx_http_script_regex_end_code_t *) e->ip; | |
737 | |
738 r = e->request; | |
739 | |
740 e->quote = 0; | |
741 | |
742 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
743 "http script regex end"); | |
744 | |
745 if (code->redirect) { | |
746 | |
577 | 747 dst = e->buf.data; |
748 src = e->buf.data; | |
749 | |
1593 | 750 ngx_unescape_uri(&dst, &src, e->pos - e->buf.data, |
751 NGX_UNESCAPE_REDIRECT); | |
577 | 752 |
753 if (src < e->pos) { | |
754 dst = ngx_copy(dst, src, e->pos - src); | |
755 } | |
756 | |
757 e->pos = dst; | |
758 | |
759 if (code->add_args && r->args.len) { | |
509 | 760 *e->pos++ = (u_char) (code->args ? '&' : '?'); |
573 | 761 e->pos = ngx_copy(e->pos, r->args.data, r->args.len); |
509 | 762 } |
763 | |
764 e->buf.len = e->pos - e->buf.data; | |
765 | |
2397 | 766 if (e->log || (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP)) { |
509 | 767 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0, |
768 "rewritten redirect: \"%V\"", &e->buf); | |
769 } | |
770 | |
771 r->headers_out.location = ngx_list_push(&r->headers_out.headers); | |
772 if (r->headers_out.location == NULL) { | |
773 e->ip = ngx_http_script_exit; | |
774 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
775 return; | |
776 } | |
777 | |
577 | 778 r->headers_out.location->hash = 1; |
509 | 779 r->headers_out.location->key.len = sizeof("Location") - 1; |
780 r->headers_out.location->key.data = (u_char *) "Location"; | |
781 r->headers_out.location->value = e->buf; | |
782 | |
783 e->ip += sizeof(ngx_http_script_regex_end_code_t); | |
784 return; | |
785 } | |
786 | |
577 | 787 if (e->args) { |
509 | 788 e->buf.len = e->args - e->buf.data; |
789 | |
790 if (code->add_args && r->args.len) { | |
791 *e->pos++ = '&'; | |
573 | 792 e->pos = ngx_copy(e->pos, r->args.data, r->args.len); |
509 | 793 } |
794 | |
795 r->args.len = e->pos - e->args; | |
796 r->args.data = e->args; | |
797 | |
798 e->args = NULL; | |
799 | |
800 } else { | |
801 e->buf.len = e->pos - e->buf.data; | |
673 | 802 |
803 if (!code->add_args) { | |
804 r->args.len = 0; | |
805 } | |
509 | 806 } |
807 | |
2397 | 808 if (e->log || (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP)) { |
509 | 809 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0, |
810 "rewritten data: \"%V\", args: \"%V\"", | |
811 &e->buf, &r->args); | |
812 } | |
813 | |
814 if (code->uri) { | |
815 r->uri = e->buf; | |
816 | |
535 | 817 if (r->uri.len == 0) { |
818 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
819 "the rewritten URI has a zero length"); | |
820 e->ip = ngx_http_script_exit; | |
821 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
822 return; | |
823 } | |
824 | |
509 | 825 if (ngx_http_set_exten(r) != NGX_OK) { |
826 e->ip = ngx_http_script_exit; | |
827 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
828 return; | |
829 } | |
830 } | |
831 | |
832 e->ip += sizeof(ngx_http_script_regex_end_code_t); | |
833 } | |
834 | |
2547
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835 |
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|
836 size_t |
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|
837 ngx_http_script_copy_capture_len_code(ngx_http_script_engine_t *e) |
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838 { |
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|
839 int *cap; |
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|
840 u_char *p; |
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841 ngx_uint_t n; |
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|
842 ngx_http_request_t *r; |
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|
843 ngx_http_script_copy_capture_code_t *code; |
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|
844 |
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|
845 r = e->request; |
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|
846 |
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847 code = (ngx_http_script_copy_capture_code_t *) e->ip; |
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848 |
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849 e->ip += sizeof(ngx_http_script_copy_capture_code_t); |
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|
850 |
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now regex captures are per-request entities
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|
851 n = code->n; |
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|
852 |
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|
853 if (n < r->ncaptures) { |
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|
854 |
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|
855 cap = r->captures; |
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|
856 |
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|
857 if ((e->is_args || e->quote) |
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|
858 && (e->request->quoted_uri || e->request->plus_in_uri)) |
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|
859 { |
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|
860 p = r->captures_data; |
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861 |
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862 return cap[n + 1] - cap[n] |
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863 + 2 * ngx_escape_uri(NULL, &p[cap[n]], cap[n + 1] - cap[n], |
912ce4113f21
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|
864 NGX_ESCAPE_ARGS); |
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|
865 } else { |
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|
866 return cap[n + 1] - cap[n]; |
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|
867 } |
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|
868 } |
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|
869 |
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|
870 return 0; |
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diff
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|
871 } |
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diff
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|
872 |
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|
873 |
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|
874 void |
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875 ngx_http_script_copy_capture_code(ngx_http_script_engine_t *e) |
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876 { |
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877 int *cap; |
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|
878 u_char *p, *pos; |
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879 ngx_uint_t n; |
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|
880 ngx_http_request_t *r; |
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881 ngx_http_script_copy_capture_code_t *code; |
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|
882 |
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|
883 r = e->request; |
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884 |
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885 code = (ngx_http_script_copy_capture_code_t *) e->ip; |
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886 |
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887 e->ip += sizeof(ngx_http_script_copy_capture_code_t); |
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888 |
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889 n = code->n; |
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|
890 |
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|
891 pos = e->pos; |
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892 |
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893 if (n < r->ncaptures) { |
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894 |
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895 cap = r->captures; |
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896 p = r->captures_data; |
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897 |
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898 if ((e->is_args || e->quote) |
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899 && (e->request->quoted_uri || e->request->plus_in_uri)) |
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900 { |
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901 e->pos = (u_char *) ngx_escape_uri(pos, &p[cap[n]], |
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902 cap[n + 1] - cap[n], |
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|
903 NGX_ESCAPE_ARGS); |
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904 } else { |
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|
905 e->pos = ngx_copy(pos, &p[cap[n]], cap[n + 1] - cap[n]); |
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906 } |
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|
907 } |
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|
908 |
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|
909 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, |
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910 "http script capture: \"%*s\"", e->pos - pos, pos); |
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911 } |
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|
912 |
517 | 913 #endif |
914 | |
509 | 915 |
916 void | |
917 ngx_http_script_return_code(ngx_http_script_engine_t *e) | |
577 | 918 { |
509 | 919 ngx_http_script_return_code_t *code; |
577 | 920 |
509 | 921 code = (ngx_http_script_return_code_t *) e->ip; |
922 | |
923 e->status = code->status; | |
924 | |
653 | 925 if (code->status == NGX_HTTP_NO_CONTENT) { |
926 e->request->header_only = 1; | |
730
1be87cdd010f
set "Content-Length: 0" for errors handled by "return 204"
Igor Sysoev <igor@sysoev.ru>
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679
diff
changeset
|
927 e->request->zero_body = 1; |
653 | 928 } |
929 | |
509 | 930 e->ip += sizeof(ngx_http_script_return_code_t) - sizeof(uintptr_t); |
479 | 931 } |
509 | 932 |
933 | |
934 void | |
527 | 935 ngx_http_script_break_code(ngx_http_script_engine_t *e) |
936 { | |
937 e->request->uri_changed = 0; | |
938 | |
939 e->ip = ngx_http_script_exit; | |
940 } | |
941 | |
942 | |
943 void | |
509 | 944 ngx_http_script_if_code(ngx_http_script_engine_t *e) |
945 { | |
946 ngx_http_script_if_code_t *code; | |
947 | |
948 code = (ngx_http_script_if_code_t *) e->ip; | |
949 | |
950 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
951 "http script if"); | |
952 | |
953 e->sp--; | |
954 | |
573 | 955 if (e->sp->len && e->sp->data[0] != '0') { |
509 | 956 if (code->loc_conf) { |
957 e->request->loc_conf = code->loc_conf; | |
535 | 958 ngx_http_update_location_config(e->request); |
509 | 959 } |
960 | |
961 e->ip += sizeof(ngx_http_script_if_code_t); | |
962 return; | |
963 } | |
964 | |
965 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
577 | 966 "http script if: false"); |
509 | 967 |
968 e->ip += code->next; | |
969 } | |
970 | |
971 | |
972 void | |
577 | 973 ngx_http_script_equal_code(ngx_http_script_engine_t *e) |
974 { | |
975 ngx_http_variable_value_t *val, *res; | |
976 | |
977 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
978 "http script equal"); | |
979 | |
980 e->sp--; | |
981 val = e->sp; | |
982 res = e->sp - 1; | |
983 | |
984 e->ip += sizeof(uintptr_t); | |
985 | |
2393 | 986 if (val->len == res->len |
987 && ngx_strncmp(val->data, res->data, res->len) == 0) | |
577 | 988 { |
989 *res = ngx_http_variable_true_value; | |
990 return; | |
991 } | |
992 | |
993 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
994 "http script equal: no"); | |
995 | |
996 *res = ngx_http_variable_null_value; | |
997 } | |
998 | |
999 | |
1000 void | |
1001 ngx_http_script_not_equal_code(ngx_http_script_engine_t *e) | |
1002 { | |
1003 ngx_http_variable_value_t *val, *res; | |
1004 | |
1005 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
1006 "http script not equal"); | |
1007 | |
1008 e->sp--; | |
1009 val = e->sp; | |
1010 res = e->sp - 1; | |
1011 | |
1012 e->ip += sizeof(uintptr_t); | |
1013 | |
2393 | 1014 if (val->len == res->len |
1015 && ngx_strncmp(val->data, res->data, res->len) == 0) | |
577 | 1016 { |
1017 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
1018 "http script not equal: no"); | |
1019 | |
1020 *res = ngx_http_variable_null_value; | |
1021 return; | |
1022 } | |
1023 | |
1024 *res = ngx_http_variable_true_value; | |
1025 } | |
1026 | |
1027 | |
1028 void | |
631 | 1029 ngx_http_script_file_code(ngx_http_script_engine_t *e) |
1030 { | |
1454 | 1031 ngx_str_t path; |
1032 ngx_http_request_t *r; | |
1033 ngx_open_file_info_t of; | |
1034 ngx_http_core_loc_conf_t *clcf; | |
631 | 1035 ngx_http_variable_value_t *value; |
1036 ngx_http_script_file_code_t *code; | |
1037 | |
1038 value = e->sp - 1; | |
1039 | |
1040 code = (ngx_http_script_file_code_t *) e->ip; | |
1041 e->ip += sizeof(ngx_http_script_file_code_t); | |
1042 | |
1454 | 1043 path.len = value->len - 1; |
1044 path.data = value->data; | |
1045 | |
1046 r = e->request; | |
1047 | |
1048 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1049 "http script file op %p \"%V\"", code->op, &path); | |
1050 | |
1051 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); | |
631 | 1052 |
2068
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ngx_memzero() ngx_open_file_info_t
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2063
diff
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|
1053 ngx_memzero(&of, sizeof(ngx_open_file_info_t)); |
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diff
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|
1054 |
2129 | 1055 of.directio = clcf->directio; |
1767
c42431762903
open_file_cache_retest > open_file_cache_valid
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parents:
1593
diff
changeset
|
1056 of.valid = clcf->open_file_cache_valid; |
1772 | 1057 of.min_uses = clcf->open_file_cache_min_uses; |
1454 | 1058 of.errors = clcf->open_file_cache_errors; |
1457 | 1059 of.events = clcf->open_file_cache_events; |
631 | 1060 |
1454 | 1061 if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool) |
1799 | 1062 != NGX_OK) |
1454 | 1063 { |
1064 if (of.err != NGX_ENOENT && of.err != NGX_ENOTDIR) { | |
1065 ngx_log_error(NGX_LOG_CRIT, r->connection->log, of.err, | |
631 | 1066 ngx_file_info_n " \"%s\" failed", value->data); |
1067 } | |
1068 | |
1069 switch (code->op) { | |
671 | 1070 |
631 | 1071 case ngx_http_script_file_plain: |
669 | 1072 case ngx_http_script_file_dir: |
1073 case ngx_http_script_file_exists: | |
1074 case ngx_http_script_file_exec: | |
2133
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parents:
2129
diff
changeset
|
1075 goto false_value; |
671 | 1076 |
631 | 1077 case ngx_http_script_file_not_plain: |
669 | 1078 case ngx_http_script_file_not_dir: |
671 | 1079 case ngx_http_script_file_not_exists: |
669 | 1080 case ngx_http_script_file_not_exec: |
2133
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2129
diff
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|
1081 goto true_value; |
631 | 1082 } |
1083 | |
2133
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Igor Sysoev <igor@sysoev.ru>
parents:
2129
diff
changeset
|
1084 goto false_value; |
631 | 1085 } |
1086 | |
1087 switch (code->op) { | |
1088 case ngx_http_script_file_plain: | |
1454 | 1089 if (of.is_file) { |
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changeset
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1090 goto true_value; |
631 | 1091 } |
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changeset
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1092 goto false_value; |
631 | 1093 |
1094 case ngx_http_script_file_not_plain: | |
1454 | 1095 if (of.is_file) { |
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1096 goto false_value; |
631 | 1097 } |
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1098 goto true_value; |
669 | 1099 |
1100 case ngx_http_script_file_dir: | |
1454 | 1101 if (of.is_dir) { |
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1102 goto true_value; |
669 | 1103 } |
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1104 goto false_value; |
669 | 1105 |
1106 case ngx_http_script_file_not_dir: | |
1454 | 1107 if (of.is_dir) { |
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1108 goto false_value; |
669 | 1109 } |
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changeset
|
1110 goto true_value; |
669 | 1111 |
1112 case ngx_http_script_file_exists: | |
1454 | 1113 if (of.is_file || of.is_dir || of.is_link) { |
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|
1114 goto true_value; |
669 | 1115 } |
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|
1116 goto false_value; |
669 | 1117 |
1118 case ngx_http_script_file_not_exists: | |
1454 | 1119 if (of.is_file || of.is_dir || of.is_link) { |
2133
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diff
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|
1120 goto false_value; |
669 | 1121 } |
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diff
changeset
|
1122 goto true_value; |
669 | 1123 |
1124 case ngx_http_script_file_exec: | |
1454 | 1125 if (of.is_exec) { |
2133
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diff
changeset
|
1126 goto true_value; |
669 | 1127 } |
2133
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diff
changeset
|
1128 goto false_value; |
669 | 1129 |
1130 case ngx_http_script_file_not_exec: | |
1454 | 1131 if (of.is_exec) { |
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1132 goto false_value; |
669 | 1133 } |
2133
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|
1134 goto true_value; |
631 | 1135 } |
1136 | |
2133
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|
1137 false_value: |
631 | 1138 |
1454 | 1139 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
631 | 1140 "http script file op false"); |
1141 | |
1142 *value = ngx_http_variable_null_value; | |
1143 return; | |
1144 | |
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1145 true_value: |
631 | 1146 |
1147 *value = ngx_http_variable_true_value; | |
1148 return; | |
1149 } | |
1150 | |
1151 | |
1152 void | |
515 | 1153 ngx_http_script_complex_value_code(ngx_http_script_engine_t *e) |
1154 { | |
1155 size_t len; | |
1156 ngx_http_script_engine_t le; | |
1157 ngx_http_script_len_code_pt lcode; | |
1158 ngx_http_script_complex_value_code_t *code; | |
1159 | |
1160 code = (ngx_http_script_complex_value_code_t *) e->ip; | |
1161 | |
1162 e->ip += sizeof(ngx_http_script_complex_value_code_t); | |
1163 | |
1164 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
1165 "http script complex value"); | |
1166 | |
1167 ngx_memzero(&le, sizeof(ngx_http_script_engine_t)); | |
1168 | |
1169 le.ip = code->lengths->elts; | |
655 | 1170 le.line = e->line; |
515 | 1171 le.request = e->request; |
655 | 1172 le.quote = e->quote; |
515 | 1173 |
1174 for (len = 0; *(uintptr_t *) le.ip; len += lcode(&le)) { | |
1175 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
1176 } | |
1177 | |
1178 e->buf.len = len; | |
2049 | 1179 e->buf.data = ngx_pnalloc(e->request->pool, len); |
515 | 1180 if (e->buf.data == NULL) { |
1181 e->ip = ngx_http_script_exit; | |
1182 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR; | |
1183 return; | |
1184 } | |
1185 | |
1186 e->pos = e->buf.data; | |
1187 | |
577 | 1188 e->sp->len = e->buf.len; |
573 | 1189 e->sp->data = e->buf.data; |
515 | 1190 e->sp++; |
1191 } | |
1192 | |
1193 | |
1194 void | |
509 | 1195 ngx_http_script_value_code(ngx_http_script_engine_t *e) |
1196 { | |
1197 ngx_http_script_value_code_t *code; | |
1198 | |
1199 code = (ngx_http_script_value_code_t *) e->ip; | |
1200 | |
1201 e->ip += sizeof(ngx_http_script_value_code_t); | |
1202 | |
573 | 1203 e->sp->len = code->text_len; |
1204 e->sp->data = (u_char *) code->text_data; | |
577 | 1205 |
1206 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
1561 | 1207 "http script value: \"%v\"", e->sp); |
577 | 1208 |
509 | 1209 e->sp++; |
1210 } | |
1211 | |
1212 | |
1213 void | |
1214 ngx_http_script_set_var_code(ngx_http_script_engine_t *e) | |
1215 { | |
1216 ngx_http_request_t *r; | |
1217 ngx_http_script_var_code_t *code; | |
1218 | |
1219 code = (ngx_http_script_var_code_t *) e->ip; | |
1220 | |
1221 e->ip += sizeof(ngx_http_script_var_code_t); | |
1222 | |
1223 r = e->request; | |
1224 | |
1225 e->sp--; | |
1226 | |
573 | 1227 r->variables[code->index].len = e->sp->len; |
1228 r->variables[code->index].valid = 1; | |
1565 | 1229 r->variables[code->index].no_cacheable = 0; |
573 | 1230 r->variables[code->index].not_found = 0; |
1231 r->variables[code->index].data = e->sp->data; | |
2393 | 1232 |
1233 #if (NGX_DEBUG) | |
1234 { | |
1235 ngx_http_variable_t *v; | |
1236 ngx_http_core_main_conf_t *cmcf; | |
1237 | |
1238 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module); | |
1239 | |
1240 v = cmcf->variables.elts; | |
1241 | |
1242 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
1243 "http script set $%V", &v[code->index].name); | |
1244 } | |
1245 #endif | |
509 | 1246 } |
1247 | |
1248 | |
1249 void | |
637 | 1250 ngx_http_script_var_set_handler_code(ngx_http_script_engine_t *e) |
1251 { | |
1252 ngx_http_script_var_handler_code_t *code; | |
1253 | |
1254 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
1255 "http script set var handler"); | |
1256 | |
1257 code = (ngx_http_script_var_handler_code_t *) e->ip; | |
1258 | |
1259 e->ip += sizeof(ngx_http_script_var_handler_code_t); | |
1260 | |
1261 e->sp--; | |
1262 | |
1263 code->handler(e->request, e->sp, code->data); | |
1264 } | |
1265 | |
1266 | |
1267 void | |
509 | 1268 ngx_http_script_var_code(ngx_http_script_engine_t *e) |
1269 { | |
1270 ngx_http_variable_value_t *value; | |
1271 ngx_http_script_var_code_t *code; | |
1272 | |
1273 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
1274 "http script var"); | |
1275 | |
1276 code = (ngx_http_script_var_code_t *) e->ip; | |
1277 | |
1278 e->ip += sizeof(ngx_http_script_var_code_t); | |
1279 | |
573 | 1280 value = ngx_http_get_flushed_variable(e->request, code->index); |
509 | 1281 |
573 | 1282 if (value && !value->not_found) { |
1283 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0, | |
1406
03341711f9a2
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parents:
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diff
changeset
|
1284 "http script var: \"%v\"", value); |
573 | 1285 |
553 | 1286 *e->sp = *value; |
509 | 1287 e->sp++; |
1288 | |
1289 return; | |
1290 } | |
1291 | |
577 | 1292 *e->sp = ngx_http_variable_null_value; |
509 | 1293 e->sp++; |
1294 } | |
1295 | |
1296 | |
1297 void | |
1298 ngx_http_script_nop_code(ngx_http_script_engine_t *e) | |
1299 { | |
1300 e->ip += sizeof(uintptr_t); | |
1301 } |