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Fix work keepalive and rewrite to named location
[nginx-catap.git] / src / http / ngx_http_script.c
blob34301ccff185d6649276eb2744bfe153cbae9852
1 /*
2 * Copyright (C) Igor Sysoev
3 */
4
5
6 #include <ngx_config.h>
7 #include <ngx_core.h>
8 #include <ngx_http.h>
9
10
11 static ngx_int_t ngx_http_script_init_arrays(ngx_http_script_compile_t *sc);
12 static ngx_int_t ngx_http_script_done(ngx_http_script_compile_t *sc);
13 static ngx_int_t ngx_http_script_add_copy_code(ngx_http_script_compile_t *sc,
14 ngx_str_t *value, ngx_uint_t last);
15 static ngx_int_t ngx_http_script_add_var_code(ngx_http_script_compile_t *sc,
16 ngx_str_t *name);
17 static ngx_int_t ngx_http_script_add_args_code(ngx_http_script_compile_t *sc);
18 #if (NGX_PCRE)
19 static ngx_int_t ngx_http_script_add_capture_code(ngx_http_script_compile_t *sc,
20 ngx_uint_t n);
21 #endif
22 static ngx_int_t
23 ngx_http_script_add_full_name_code(ngx_http_script_compile_t *sc);
24 static size_t ngx_http_script_full_name_len_code(ngx_http_script_engine_t *e);
25 static void ngx_http_script_full_name_code(ngx_http_script_engine_t *e);
26
27
28 #define ngx_http_script_exit (u_char *) &ngx_http_script_exit_code
29
30 static uintptr_t ngx_http_script_exit_code = (uintptr_t) NULL;
31
32
33 void
34 ngx_http_script_flush_complex_value(ngx_http_request_t *r,
35 ngx_http_complex_value_t *val)
36 {
37 ngx_uint_t *index;
38
39 index = val->flushes;
40
41 if (index) {
42 while (*index != (ngx_uint_t) -1) {
43
44 if (r->variables[*index].no_cacheable) {
45 r->variables[*index].valid = 0;
46 r->variables[*index].not_found = 0;
47 }
48
49 index++;
50 }
51 }
52 }
53
54
55 ngx_int_t
56 ngx_http_complex_value(ngx_http_request_t *r, ngx_http_complex_value_t *val,
57 ngx_str_t *value)
58 {
59 size_t len;
60 ngx_http_script_code_pt code;
61 ngx_http_script_len_code_pt lcode;
62 ngx_http_script_engine_t e;
63
64 if (val->lengths == NULL) {
65 *value = val->value;
66 return NGX_OK;
67 }
68
69 ngx_http_script_flush_complex_value(r, val);
70
71 ngx_memzero(&e, sizeof(ngx_http_script_engine_t));
72
73 e.ip = val->lengths;
74 e.request = r;
75 e.flushed = 1;
76
77 len = 0;
78
79 while (*(uintptr_t *) e.ip) {
80 lcode = *(ngx_http_script_len_code_pt *) e.ip;
81 len += lcode(&e);
82 }
83
84 value->len = len;
85 value->data = ngx_pnalloc(r->pool, len);
86 if (value->data == NULL) {
87 return NGX_ERROR;
88 }
89
90 e.ip = val->values;
91 e.pos = value->data;
92 e.buf = *value;
93
94 while (*(uintptr_t *) e.ip) {
95 code = *(ngx_http_script_code_pt *) e.ip;
96 code((ngx_http_script_engine_t *) &e);
97 }
98
99 *value = e.buf;
100
101 return NGX_OK;
102 }
103
104
105 ngx_int_t
106 ngx_http_compile_complex_value(ngx_http_compile_complex_value_t *ccv)
107 {
108 ngx_str_t *v;
109 ngx_uint_t i, n, nv, nc;
110 ngx_array_t flushes, lengths, values, *pf, *pl, *pv;
111 ngx_http_script_compile_t sc;
112
113 v = ccv->value;
114
115 if (v->len == 0) {
116 ngx_conf_log_error(NGX_LOG_EMERG, ccv->cf, 0, "empty parameter");
117 return NGX_ERROR;
118 }
119
120 nv = 0;
121 nc = 0;
122
123 for (i = 0; i < v->len; i++) {
124 if (v->data[i] == '$') {
125 if (v->data[i + 1] >= '1' && v->data[i + 1] <= '9') {
126 nc++;
127
128 } else {
129 nv++;
130 }
131 }
132 }
133
134 if (v->data[0] != '$' && (ccv->conf_prefix || ccv->root_prefix)) {
135
136 if (ngx_conf_full_name(ccv->cf->cycle, v, ccv->conf_prefix) != NGX_OK) {
137 return NGX_ERROR;
138 }
139
140 ccv->conf_prefix = 0;
141 ccv->root_prefix = 0;
142 }
143
144 ccv->complex_value->value = *v;
145 ccv->complex_value->flushes = NULL;
146 ccv->complex_value->lengths = NULL;
147 ccv->complex_value->values = NULL;
148
149 if (nv == 0 && nc == 0) {
150 return NGX_OK;
151 }
152
153 n = nv + 1;
154
155 if (ngx_array_init(&flushes, ccv->cf->pool, n, sizeof(ngx_uint_t))
156 != NGX_OK)
157 {
158 return NGX_ERROR;
159 }
160
161 n = nv * (2 * sizeof(ngx_http_script_copy_code_t)
162 + sizeof(ngx_http_script_var_code_t))
163 + sizeof(uintptr_t);
164
165 if (ngx_array_init(&lengths, ccv->cf->pool, n, 1) != NGX_OK) {
166 return NGX_ERROR;
167 }
168
169 n = (nv * (2 * sizeof(ngx_http_script_copy_code_t)
170 + sizeof(ngx_http_script_var_code_t))
171 + sizeof(uintptr_t)
172 + v->len
173 + sizeof(uintptr_t) - 1)
174 & ~(sizeof(uintptr_t) - 1);
175
176 if (ngx_array_init(&values, ccv->cf->pool, n, 1) != NGX_OK) {
177 return NGX_ERROR;
178 }
179
180 pf = &flushes;
181 pl = &lengths;
182 pv = &values;
183
184 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t));
185
186 sc.cf = ccv->cf;
187 sc.source = v;
188 sc.flushes = &pf;
189 sc.lengths = &pl;
190 sc.values = &pv;
191 sc.complete_lengths = 1;
192 sc.complete_values = 1;
193 sc.zero = ccv->zero;
194 sc.conf_prefix = ccv->conf_prefix;
195 sc.root_prefix = ccv->root_prefix;
196
197 if (ngx_http_script_compile(&sc) != NGX_OK) {
198 return NGX_ERROR;
199 }
200
201 if (flushes.nelts) {
202 ccv->complex_value->flushes = flushes.elts;
203 ccv->complex_value->flushes[flushes.nelts] = (ngx_uint_t) -1;
204 }
205
206 ccv->complex_value->lengths = lengths.elts;
207 ccv->complex_value->values = values.elts;
208
209 return NGX_OK;
210 }
211
212
213 ngx_uint_t
214 ngx_http_script_variables_count(ngx_str_t *value)
215 {
216 ngx_uint_t i, n;
217
218 for (n = 0, i = 0; i < value->len; i++) {
219 if (value->data[i] == '$') {
220 n++;
221 }
222 }
223
224 return n;
225 }
226
227
228 ngx_int_t
229 ngx_http_script_compile(ngx_http_script_compile_t *sc)
230 {
231 u_char ch;
232 ngx_str_t name;
233 ngx_uint_t i, bracket;
234
235 if (ngx_http_script_init_arrays(sc) != NGX_OK) {
236 return NGX_ERROR;
237 }
238
239 for (i = 0; i < sc->source->len; /* void */ ) {
240
241 name.len = 0;
242
243 if (sc->source->data[i] == '$') {
244
245 if (++i == sc->source->len) {
246 goto invalid_variable;
247 }
248
249 #if (NGX_PCRE)
250 {
251 ngx_uint_t n;
252
253 if (sc->source->data[i] >= '1' && sc->source->data[i] <= '9') {
254
255 n = sc->source->data[i] - '0';
256
257 if (sc->captures_mask & (1 << n)) {
258 sc->dup_capture = 1;
259 }
260
261 sc->captures_mask |= 1 << n;
262
263 if (ngx_http_script_add_capture_code(sc, n) != NGX_OK) {
264 return NGX_ERROR;
265 }
266
267 i++;
268
269 continue;
270 }
271 }
272 #endif
273
274 if (sc->source->data[i] == '{') {
275 bracket = 1;
276
277 if (++i == sc->source->len) {
278 goto invalid_variable;
279 }
280
281 name.data = &sc->source->data[i];
282
283 } else {
284 bracket = 0;
285 name.data = &sc->source->data[i];
286 }
287
288 for ( /* void */ ; i < sc->source->len; i++, name.len++) {
289 ch = sc->source->data[i];
290
291 if (ch == '}' && bracket) {
292 i++;
293 bracket = 0;
294 break;
295 }
296
297 if ((ch >= 'A' && ch <= 'Z')
298 || (ch >= 'a' && ch <= 'z')
299 || (ch >= '0' && ch <= '9')
300 || ch == '_'
301 || ch == '-')
302 {
303 continue;
304 }
305
306 break;
307 }
308
309 if (bracket) {
310 ngx_conf_log_error(NGX_LOG_EMERG, sc->cf, 0,
311 "the closing bracket in \"%V\" "
312 "variable is missing", &name);
313 return NGX_ERROR;
314 }
315
316 if (name.len == 0) {
317 goto invalid_variable;
318 }
319
320 sc->variables++;
321
322 if (ngx_http_script_add_var_code(sc, &name) != NGX_OK) {
323 return NGX_ERROR;
324 }
325
326 continue;
327 }
328
329 if (sc->source->data[i] == '?' && sc->compile_args) {
330 sc->args = 1;
331 sc->compile_args = 0;
332
333 if (ngx_http_script_add_args_code(sc) != NGX_OK) {
334 return NGX_ERROR;
335 }
336
337 i++;
338
339 continue;
340 }
341
342 name.data = &sc->source->data[i];
343
344 while (i < sc->source->len) {
345
346 if (sc->source->data[i] == '$') {
347 break;
348 }
349
350 if (sc->source->data[i] == '?') {
351
352 sc->args = 1;
353
354 if (sc->compile_args) {
355 break;
356 }
357 }
358
359 i++;
360 name.len++;
361 }
362
363 sc->size += name.len;
364
365 if (ngx_http_script_add_copy_code(sc, &name, (i == sc->source->len))
366 != NGX_OK)
367 {
368 return NGX_ERROR;
369 }
370 }
371
372 return ngx_http_script_done(sc);
373
374 invalid_variable:
375
376 ngx_conf_log_error(NGX_LOG_EMERG, sc->cf, 0, "invalid variable name");
377
378 return NGX_ERROR;
379 }
380
381
382 u_char *
383 ngx_http_script_run(ngx_http_request_t *r, ngx_str_t *value,
384 void *code_lengths, size_t len, void *code_values)
385 {
386 ngx_uint_t i;
387 ngx_http_script_code_pt code;
388 ngx_http_script_len_code_pt lcode;
389 ngx_http_script_engine_t e;
390 ngx_http_core_main_conf_t *cmcf;
391
392 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
393
394 for (i = 0; i < cmcf->variables.nelts; i++) {
395 if (r->variables[i].no_cacheable) {
396 r->variables[i].valid = 0;
397 r->variables[i].not_found = 0;
398 }
399 }
400
401 ngx_memzero(&e, sizeof(ngx_http_script_engine_t));
402
403 e.ip = code_lengths;
404 e.request = r;
405 e.flushed = 1;
406
407 while (*(uintptr_t *) e.ip) {
408 lcode = *(ngx_http_script_len_code_pt *) e.ip;
409 len += lcode(&e);
410 }
411
412
413 value->len = len;
414 value->data = ngx_pnalloc(r->pool, len);
415 if (value->data == NULL) {
416 return NULL;
417 }
418
419 e.ip = code_values;
420 e.pos = value->data;
421
422 while (*(uintptr_t *) e.ip) {
423 code = *(ngx_http_script_code_pt *) e.ip;
424 code((ngx_http_script_engine_t *) &e);
425 }
426
427 return e.pos;
428 }
429
430
431 void
432 ngx_http_script_flush_no_cacheable_variables(ngx_http_request_t *r,
433 ngx_array_t *indices)
434 {
435 ngx_uint_t n, *index;
436
437 if (indices) {
438 index = indices->elts;
439 for (n = 0; n < indices->nelts; n++) {
440 if (r->variables[index[n]].no_cacheable) {
441 r->variables[index[n]].valid = 0;
442 r->variables[index[n]].not_found = 0;
443 }
444 }
445 }
446 }
447
448
449 void
450 ngx_http_script_force_flush_variables(ngx_http_request_t *r,
451 ngx_array_t *indices)
452 {
453 ngx_uint_t n, *index;
454
455 if (indices) {
456 index = indices->elts;
457 for (n = 0; n < indices->nelts; n++) {
458 r->variables[index[n]].valid = 0;
459 r->variables[index[n]].not_found = 0;
460 }
461 }
462 }
463
464
465 static ngx_int_t
466 ngx_http_script_init_arrays(ngx_http_script_compile_t *sc)
467 {
468 ngx_uint_t n;
469
470 if (sc->flushes && *sc->flushes == NULL) {
471 n = sc->variables ? sc->variables : 1;
472 *sc->flushes = ngx_array_create(sc->cf->pool, n, sizeof(ngx_uint_t));
473 if (*sc->flushes == NULL) {
474 return NGX_ERROR;
475 }
476 }
477
478 if (*sc->lengths == NULL) {
479 n = sc->variables * (2 * sizeof(ngx_http_script_copy_code_t)
480 + sizeof(ngx_http_script_var_code_t))
481 + sizeof(uintptr_t);
482
483 *sc->lengths = ngx_array_create(sc->cf->pool, n, 1);
484 if (*sc->lengths == NULL) {
485 return NGX_ERROR;
486 }
487 }
488
489 if (*sc->values == NULL) {
490 n = (sc->variables * (2 * sizeof(ngx_http_script_copy_code_t)
491 + sizeof(ngx_http_script_var_code_t))
492 + sizeof(uintptr_t)
493 + sc->source->len
494 + sizeof(uintptr_t) - 1)
495 & ~(sizeof(uintptr_t) - 1);
496
497 *sc->values = ngx_array_create(sc->cf->pool, n, 1);
498 if (*sc->values == NULL) {
499 return NGX_ERROR;
500 }
501 }
502
503 sc->variables = 0;
504
505 return NGX_OK;
506 }
507
508
509 static ngx_int_t
510 ngx_http_script_done(ngx_http_script_compile_t *sc)
511 {
512 ngx_str_t zero;
513 uintptr_t *code;
514
515 if (sc->zero) {
516
517 zero.len = 1;
518 zero.data = (u_char *) "\0";
519
520 if (ngx_http_script_add_copy_code(sc, &zero, 0) != NGX_OK) {
521 return NGX_ERROR;
522 }
523 }
524
525 if (sc->conf_prefix || sc->root_prefix) {
526 if (ngx_http_script_add_full_name_code(sc) != NGX_OK) {
527 return NGX_ERROR;
528 }
529 }
530
531 if (sc->complete_lengths) {
532 code = ngx_http_script_add_code(*sc->lengths, sizeof(uintptr_t), NULL);
533 if (code == NULL) {
534 return NGX_ERROR;
535 }
536
537 *code = (uintptr_t) NULL;
538 }
539
540 if (sc->complete_values) {
541 code = ngx_http_script_add_code(*sc->values, sizeof(uintptr_t),
542 &sc->main);
543 if (code == NULL) {
544 return NGX_ERROR;
545 }
546
547 *code = (uintptr_t) NULL;
548 }
549
550 return NGX_OK;
551 }
552
553
554 void *
555 ngx_http_script_start_code(ngx_pool_t *pool, ngx_array_t **codes, size_t size)
556 {
557 if (*codes == NULL) {
558 *codes = ngx_array_create(pool, 256, 1);
559 if (*codes == NULL) {
560 return NULL;
561 }
562 }
563
564 return ngx_array_push_n(*codes, size);
565 }
566
567
568 void *
569 ngx_http_script_add_code(ngx_array_t *codes, size_t size, void *code)
570 {
571 u_char *elts, **p;
572 void *new;
573
574 elts = codes->elts;
575
576 new = ngx_array_push_n(codes, size);
577 if (new == NULL) {
578 return NULL;
579 }
580
581 if (code) {
582 if (elts != codes->elts) {
583 p = code;
584 *p += (u_char *) codes->elts - elts;
585 }
586 }
587
588 return new;
589 }
590
591
592 static ngx_int_t
593 ngx_http_script_add_copy_code(ngx_http_script_compile_t *sc, ngx_str_t *value,
594 ngx_uint_t last)
595 {
596 u_char *p;
597 size_t size, len, zero;
598 ngx_http_script_copy_code_t *code;
599
600 zero = (sc->zero && last);
601 len = value->len + zero;
602
603 code = ngx_http_script_add_code(*sc->lengths,
604 sizeof(ngx_http_script_copy_code_t), NULL);
605 if (code == NULL) {
606 return NGX_ERROR;
607 }
608
609 code->code = (ngx_http_script_code_pt) ngx_http_script_copy_len_code;
610 code->len = len;
611
612 size = (sizeof(ngx_http_script_copy_code_t) + len + sizeof(uintptr_t) - 1)
613 & ~(sizeof(uintptr_t) - 1);
614
615 code = ngx_http_script_add_code(*sc->values, size, &sc->main);
616 if (code == NULL) {
617 return NGX_ERROR;
618 }
619
620 code->code = ngx_http_script_copy_code;
621 code->len = len;
622
623 p = ngx_cpymem((u_char *) code + sizeof(ngx_http_script_copy_code_t),
624 value->data, value->len);
625
626 if (zero) {
627 *p = '\0';
628 sc->zero = 0;
629 }
630
631 return NGX_OK;
632 }
633
634
635 size_t
636 ngx_http_script_copy_len_code(ngx_http_script_engine_t *e)
637 {
638 ngx_http_script_copy_code_t *code;
639
640 code = (ngx_http_script_copy_code_t *) e->ip;
641
642 e->ip += sizeof(ngx_http_script_copy_code_t);
643
644 return code->len;
645 }
646
647
648 void
649 ngx_http_script_copy_code(ngx_http_script_engine_t *e)
650 {
651 u_char *p;
652 ngx_http_script_copy_code_t *code;
653
654 code = (ngx_http_script_copy_code_t *) e->ip;
655
656 p = e->pos;
657
658 if (!e->skip) {
659 e->pos = ngx_copy(p, e->ip + sizeof(ngx_http_script_copy_code_t),
660 code->len);
661 }
662
663 e->ip += sizeof(ngx_http_script_copy_code_t)
664 + ((code->len + sizeof(uintptr_t) - 1) & ~(sizeof(uintptr_t) - 1));
665
666 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
667 "http script copy: \"%*s\"", e->pos - p, p);
668 }
669
670
671 static ngx_int_t
672 ngx_http_script_add_var_code(ngx_http_script_compile_t *sc, ngx_str_t *name)
673 {
674 ngx_int_t index, *p;
675 ngx_http_script_var_code_t *code;
676
677 index = ngx_http_get_variable_index(sc->cf, name);
678
679 if (index == NGX_ERROR) {
680 return NGX_ERROR;
681 }
682
683 if (sc->flushes) {
684 p = ngx_array_push(*sc->flushes);
685 if (p == NULL) {
686 return NGX_ERROR;
687 }
688
689 *p = index;
690 }
691
692 code = ngx_http_script_add_code(*sc->lengths,
693 sizeof(ngx_http_script_var_code_t), NULL);
694 if (code == NULL) {
695 return NGX_ERROR;
696 }
697
698 code->code = (ngx_http_script_code_pt) ngx_http_script_copy_var_len_code;
699 code->index = (uintptr_t) index;
700
701 code = ngx_http_script_add_code(*sc->values,
702 sizeof(ngx_http_script_var_code_t),
703 &sc->main);
704 if (code == NULL) {
705 return NGX_ERROR;
706 }
707
708 code->code = ngx_http_script_copy_var_code;
709 code->index = (uintptr_t) index;
710
711 return NGX_OK;
712 }
713
714
715 size_t
716 ngx_http_script_copy_var_len_code(ngx_http_script_engine_t *e)
717 {
718 ngx_http_variable_value_t *value;
719 ngx_http_script_var_code_t *code;
720
721 code = (ngx_http_script_var_code_t *) e->ip;
722
723 e->ip += sizeof(ngx_http_script_var_code_t);
724
725 if (e->flushed) {
726 value = ngx_http_get_indexed_variable(e->request, code->index);
727
728 } else {
729 value = ngx_http_get_flushed_variable(e->request, code->index);
730 }
731
732 if (value && !value->not_found) {
733 return value->len;
734 }
735
736 return 0;
737 }
738
739
740 void
741 ngx_http_script_copy_var_code(ngx_http_script_engine_t *e)
742 {
743 u_char *p;
744 ngx_http_variable_value_t *value;
745 ngx_http_script_var_code_t *code;
746
747 code = (ngx_http_script_var_code_t *) e->ip;
748
749 e->ip += sizeof(ngx_http_script_var_code_t);
750
751 if (!e->skip) {
752
753 if (e->flushed) {
754 value = ngx_http_get_indexed_variable(e->request, code->index);
755
756 } else {
757 value = ngx_http_get_flushed_variable(e->request, code->index);
758 }
759
760 if (value && !value->not_found) {
761 p = e->pos;
762 e->pos = ngx_copy(p, value->data, value->len);
763
764 ngx_log_debug2(NGX_LOG_DEBUG_HTTP,
765 e->request->connection->log, 0,
766 "http script var: \"%*s\"", e->pos - p, p);
767 }
768 }
769 }
770
771
772 static ngx_int_t
773 ngx_http_script_add_args_code(ngx_http_script_compile_t *sc)
774 {
775 uintptr_t *code;
776
777 code = ngx_http_script_add_code(*sc->lengths, sizeof(uintptr_t), NULL);
778 if (code == NULL) {
779 return NGX_ERROR;
780 }
781
782 *code = (uintptr_t) ngx_http_script_mark_args_code;
783
784 code = ngx_http_script_add_code(*sc->values, sizeof(uintptr_t), &sc->main);
785 if (code == NULL) {
786 return NGX_ERROR;
787 }
788
789 *code = (uintptr_t) ngx_http_script_start_args_code;
790
791 return NGX_OK;
792 }
793
794
795 size_t
796 ngx_http_script_mark_args_code(ngx_http_script_engine_t *e)
797 {
798 e->is_args = 1;
799 e->ip += sizeof(uintptr_t);
800
801 return 1;
802 }
803
804
805 void
806 ngx_http_script_start_args_code(ngx_http_script_engine_t *e)
807 {
808 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
809 "http script args");
810
811 e->is_args = 1;
812 e->args = e->pos;
813 e->ip += sizeof(uintptr_t);
814 }
815
816
817 #if (NGX_PCRE)
818
819 void
820 ngx_http_script_regex_start_code(ngx_http_script_engine_t *e)
821 {
822 size_t len;
823 ngx_int_t rc;
824 ngx_uint_t n;
825 ngx_http_request_t *r;
826 ngx_http_script_engine_t le;
827 ngx_http_script_len_code_pt lcode;
828 ngx_http_script_regex_code_t *code;
829
830 code = (ngx_http_script_regex_code_t *) e->ip;
831
832 r = e->request;
833
834 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
835 "http script regex: \"%V\"", &code->name);
836
837 if (code->uri) {
838 e->line = r->uri;
839 } else {
840 e->sp--;
841 e->line.len = e->sp->len;
842 e->line.data = e->sp->data;
843 }
844
845 rc = ngx_http_regex_exec(r, code->regex, &e->line);
846
847 if (rc == NGX_DECLINED) {
848 if (e->log || (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP)) {
849 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0,
850 "\"%V\" does not match \"%V\"",
851 &code->name, &e->line);
852 }
853
854 r->ncaptures = 0;
855
856 if (code->test) {
857 if (code->negative_test) {
858 e->sp->len = 1;
859 e->sp->data = (u_char *) "1";
860
861 } else {
862 e->sp->len = 0;
863 e->sp->data = (u_char *) "";
864 }
865
866 e->sp++;
867
868 e->ip += sizeof(ngx_http_script_regex_code_t);
869 return;
870 }
871
872 e->ip += code->next;
873 return;
874 }
875
876 if (rc == NGX_ERROR) {
877 e->ip = ngx_http_script_exit;
878 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR;
879 return;
880 }
881
882 if (e->log || (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP)) {
883 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0,
884 "\"%V\" matches \"%V\"", &code->name, &e->line);
885 }
886
887 if (code->test) {
888 if (code->negative_test) {
889 e->sp->len = 0;
890 e->sp->data = (u_char *) "";
891
892 } else {
893 e->sp->len = 1;
894 e->sp->data = (u_char *) "1";
895 }
896
897 e->sp++;
898
899 e->ip += sizeof(ngx_http_script_regex_code_t);
900 return;
901 }
902
903 if (code->status) {
904 e->status = code->status;
905
906 if (!code->redirect) {
907 e->ip = ngx_http_script_exit;
908 return;
909 }
910 }
911
912 if (code->uri) {
913 r->internal = 1;
914 r->valid_unparsed_uri = 0;
915
916 if (code->break_cycle) {
917 r->valid_location = 0;
918 r->uri_changed = 0;
919
920 } else {
921 r->uri_changed = 1;
922 }
923 }
924
925 if (code->lengths == NULL) {
926 e->buf.len = code->size;
927
928 if (code->uri) {
929 if (r->ncaptures && (r->quoted_uri || r->plus_in_uri)) {
930 e->buf.len += 2 * ngx_escape_uri(NULL, r->uri.data, r->uri.len,
931 NGX_ESCAPE_ARGS);
932 }
933 }
934
935 for (n = 2; n < r->ncaptures; n += 2) {
936 e->buf.len += r->captures[n + 1] - r->captures[n];
937 }
938
939 } else {
940 ngx_memzero(&le, sizeof(ngx_http_script_engine_t));
941
942 le.ip = code->lengths->elts;
943 le.line = e->line;
944 le.request = r;
945 le.quote = code->redirect;
946
947 len = 0;
948
949 while (*(uintptr_t *) le.ip) {
950 lcode = *(ngx_http_script_len_code_pt *) le.ip;
951 len += lcode(&le);
952 }
953
954 e->buf.len = len;
955 e->is_args = le.is_args;
956 }
957
958 if (code->add_args && r->args.len) {
959 e->buf.len += r->args.len + 1;
960 }
961
962 e->buf.data = ngx_pnalloc(r->pool, e->buf.len);
963 if (e->buf.data == NULL) {
964 e->ip = ngx_http_script_exit;
965 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR;
966 return;
967 }
968
969 e->quote = code->redirect;
970
971 e->pos = e->buf.data;
972
973 e->ip += sizeof(ngx_http_script_regex_code_t);
974 }
975
976
977 void
978 ngx_http_script_regex_end_code(ngx_http_script_engine_t *e)
979 {
980 u_char *dst, *src;
981 ngx_http_request_t *r;
982 ngx_http_core_srv_conf_t *cscf;
983 ngx_http_core_loc_conf_t **clcfp;
984 ngx_http_script_regex_end_code_t *code;
985
986 code = (ngx_http_script_regex_end_code_t *) e->ip;
987
988 r = e->request;
989
990 e->quote = 0;
991
992 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
993 "http script regex end");
994
995 if (code->redirect) {
996
997 dst = e->buf.data;
998 src = e->buf.data;
999
1000 ngx_unescape_uri(&dst, &src, e->pos - e->buf.data,
1001 NGX_UNESCAPE_REDIRECT);
1002
1003 if (src < e->pos) {
1004 dst = ngx_copy(dst, src, e->pos - src);
1005 }
1006
1007 e->pos = dst;
1008
1009 if (code->add_args && r->args.len) {
1010 *e->pos++ = (u_char) (code->args ? '&' : '?');
1011 e->pos = ngx_copy(e->pos, r->args.data, r->args.len);
1012 }
1013
1014 e->buf.len = e->pos - e->buf.data;
1015
1016 if (e->log || (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP)) {
1017 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0,
1018 "rewritten redirect: \"%V\"", &e->buf);
1019 }
1020
1021 r->headers_out.location = ngx_list_push(&r->headers_out.headers);
1022 if (r->headers_out.location == NULL) {
1023 e->ip = ngx_http_script_exit;
1024 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR;
1025 return;
1026 }
1027
1028 r->headers_out.location->hash = 1;
1029 ngx_str_set(&r->headers_out.location->key, "Location");
1030 r->headers_out.location->value = e->buf;
1031
1032 e->ip += sizeof(ngx_http_script_regex_end_code_t);
1033 return;
1034 }
1035
1036 if (e->args) {
1037 e->buf.len = e->args - e->buf.data;
1038
1039 if (code->add_args && r->args.len) {
1040 *e->pos++ = '&';
1041 e->pos = ngx_copy(e->pos, r->args.data, r->args.len);
1042 }
1043
1044 r->args.len = e->pos - e->args;
1045 r->args.data = e->args;
1046
1047 e->args = NULL;
1048
1049 } else {
1050 e->buf.len = e->pos - e->buf.data;
1051
1052 if (!code->add_args) {
1053 r->args.len = 0;
1054 }
1055 }
1056
1057 if (e->log || (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP)) {
1058 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0,
1059 "rewritten data: \"%V\", args: \"%V\"",
1060 &e->buf, &r->args);
1061 }
1062
1063 if (code->uri) {
1064 if (code->named_redirect) {
1065 cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
1066
1067 if (!cscf->named_locations) {
1068 e->ip = ngx_http_script_exit;
1069 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR;
1070 return;
1071 }
1072
1073 for (clcfp = cscf->named_locations; *clcfp; clcfp++) {
1074
1075 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
1076 "test location: \"%V\"", &(*clcfp)->name);
1077
1078 if (e->buf.len != (*clcfp)->name.len
1079 || ngx_strncmp(e->buf.data,
1080 (*clcfp)->name.data, e->buf.len) != 0) {
1081 continue;
1082 }
1083
1084 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
1085 "using location: %V \"%V?%V\"",
1086 &e->buf, &r->uri, &r->args);
1087
1088 r->internal = 1;
1089 r->uri_changed = 0;
1090 r->loc_conf = (*clcfp)->loc_conf;
1091
1092 ngx_http_update_location_config(r);
1093 break;
1094 }
1095
1096 } else {
1097 r->uri = e->buf;
1098
1099 if (r->uri.len == 0) {
1100 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
1101 "the rewritten URI has a zero length");
1102 e->ip = ngx_http_script_exit;
1103 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR;
1104 return;
1105 }
1106 }
1107
1108 ngx_http_set_exten(r);
1109 }
1110
1111 e->ip += sizeof(ngx_http_script_regex_end_code_t);
1112 }
1113
1114
1115 static ngx_int_t
1116 ngx_http_script_add_capture_code(ngx_http_script_compile_t *sc, ngx_uint_t n)
1117 {
1118 ngx_http_script_copy_capture_code_t *code;
1119
1120 code = ngx_http_script_add_code(*sc->lengths,
1121 sizeof(ngx_http_script_copy_capture_code_t),
1122 NULL);
1123 if (code == NULL) {
1124 return NGX_ERROR;
1125 }
1126
1127 code->code = (ngx_http_script_code_pt)
1128 ngx_http_script_copy_capture_len_code;
1129 code->n = 2 * n;
1130
1131
1132 code = ngx_http_script_add_code(*sc->values,
1133 sizeof(ngx_http_script_copy_capture_code_t),
1134 &sc->main);
1135 if (code == NULL) {
1136 return NGX_ERROR;
1137 }
1138
1139 code->code = ngx_http_script_copy_capture_code;
1140 code->n = 2 * n;
1141
1142 if (sc->ncaptures < n) {
1143 sc->ncaptures = n;
1144 }
1145
1146 return NGX_OK;
1147 }
1148
1149
1150 size_t
1151 ngx_http_script_copy_capture_len_code(ngx_http_script_engine_t *e)
1152 {
1153 int *cap;
1154 u_char *p;
1155 ngx_uint_t n;
1156 ngx_http_request_t *r;
1157 ngx_http_script_copy_capture_code_t *code;
1158
1159 r = e->request;
1160
1161 code = (ngx_http_script_copy_capture_code_t *) e->ip;
1162
1163 e->ip += sizeof(ngx_http_script_copy_capture_code_t);
1164
1165 n = code->n;
1166
1167 if (n < r->ncaptures) {
1168
1169 cap = r->captures;
1170
1171 if ((e->is_args || e->quote)
1172 && (e->request->quoted_uri || e->request->plus_in_uri))
1173 {
1174 p = r->captures_data;
1175
1176 return cap[n + 1] - cap[n]
1177 + 2 * ngx_escape_uri(NULL, &p[cap[n]], cap[n + 1] - cap[n],
1178 NGX_ESCAPE_ARGS);
1179 } else {
1180 return cap[n + 1] - cap[n];
1181 }
1182 }
1183
1184 return 0;
1185 }
1186
1187
1188 void
1189 ngx_http_script_copy_capture_code(ngx_http_script_engine_t *e)
1190 {
1191 int *cap;
1192 u_char *p, *pos;
1193 ngx_uint_t n;
1194 ngx_http_request_t *r;
1195 ngx_http_script_copy_capture_code_t *code;
1196
1197 r = e->request;
1198
1199 code = (ngx_http_script_copy_capture_code_t *) e->ip;
1200
1201 e->ip += sizeof(ngx_http_script_copy_capture_code_t);
1202
1203 n = code->n;
1204
1205 pos = e->pos;
1206
1207 if (n < r->ncaptures) {
1208
1209 cap = r->captures;
1210 p = r->captures_data;
1211
1212 if ((e->is_args || e->quote)
1213 && (e->request->quoted_uri || e->request->plus_in_uri))
1214 {
1215 e->pos = (u_char *) ngx_escape_uri(pos, &p[cap[n]],
1216 cap[n + 1] - cap[n],
1217 NGX_ESCAPE_ARGS);
1218 } else {
1219 e->pos = ngx_copy(pos, &p[cap[n]], cap[n + 1] - cap[n]);
1220 }
1221 }
1222
1223 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1224 "http script capture: \"%*s\"", e->pos - pos, pos);
1225 }
1226
1227 #endif
1228
1229
1230 static ngx_int_t
1231 ngx_http_script_add_full_name_code(ngx_http_script_compile_t *sc)
1232 {
1233 ngx_http_script_full_name_code_t *code;
1234
1235 code = ngx_http_script_add_code(*sc->lengths,
1236 sizeof(ngx_http_script_full_name_code_t),
1237 NULL);
1238 if (code == NULL) {
1239 return NGX_ERROR;
1240 }
1241
1242 code->code = (ngx_http_script_code_pt) ngx_http_script_full_name_len_code;
1243 code->conf_prefix = sc->conf_prefix;
1244
1245 code = ngx_http_script_add_code(*sc->values,
1246 sizeof(ngx_http_script_full_name_code_t),
1247 &sc->main);
1248 if (code == NULL) {
1249 return NGX_ERROR;
1250 }
1251
1252 code->code = ngx_http_script_full_name_code;
1253 code->conf_prefix = sc->conf_prefix;
1254
1255 return NGX_OK;
1256 }
1257
1258
1259 static size_t
1260 ngx_http_script_full_name_len_code(ngx_http_script_engine_t *e)
1261 {
1262 ngx_http_script_full_name_code_t *code;
1263
1264 code = (ngx_http_script_full_name_code_t *) e->ip;
1265
1266 e->ip += sizeof(ngx_http_script_full_name_code_t);
1267
1268 return code->conf_prefix ? ngx_cycle->conf_prefix.len:
1269 ngx_cycle->prefix.len;
1270 }
1271
1272
1273 static void
1274 ngx_http_script_full_name_code(ngx_http_script_engine_t *e)
1275 {
1276 ngx_http_script_full_name_code_t *code;
1277
1278 ngx_str_t value;
1279
1280 code = (ngx_http_script_full_name_code_t *) e->ip;
1281
1282 value.data = e->buf.data;
1283 value.len = e->pos - e->buf.data;
1284
1285 if (ngx_conf_full_name((ngx_cycle_t *) ngx_cycle, &value, code->conf_prefix)
1286 != NGX_OK)
1287 {
1288 e->ip = ngx_http_script_exit;
1289 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR;
1290 return;
1291 }
1292
1293 e->buf = value;
1294
1295 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1296 "http script fullname: \"%V\"", &value);
1297
1298 e->ip += sizeof(ngx_http_script_full_name_code_t);
1299 }
1300
1301
1302 void
1303 ngx_http_script_return_code(ngx_http_script_engine_t *e)
1304 {
1305 ngx_http_script_return_code_t *code;
1306
1307 code = (ngx_http_script_return_code_t *) e->ip;
1308
1309 e->status = code->status;
1310
1311 if (code->status == NGX_HTTP_NO_CONTENT) {
1312 e->request->header_only = 1;
1313 e->request->zero_body = 1;
1314 }
1315
1316 e->ip += sizeof(ngx_http_script_return_code_t) - sizeof(uintptr_t);
1317 }
1318
1319
1320 void
1321 ngx_http_script_break_code(ngx_http_script_engine_t *e)
1322 {
1323 e->request->uri_changed = 0;
1324
1325 e->ip = ngx_http_script_exit;
1326 }
1327
1328
1329 void
1330 ngx_http_script_if_code(ngx_http_script_engine_t *e)
1331 {
1332 ngx_http_script_if_code_t *code;
1333
1334 code = (ngx_http_script_if_code_t *) e->ip;
1335
1336 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1337 "http script if");
1338
1339 e->sp--;
1340
1341 if (e->sp->len && e->sp->data[0] != '0') {
1342 if (code->loc_conf) {
1343 e->request->loc_conf = code->loc_conf;
1344 ngx_http_update_location_config(e->request);
1345 }
1346
1347 e->ip += sizeof(ngx_http_script_if_code_t);
1348 return;
1349 }
1350
1351 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1352 "http script if: false");
1353
1354 e->ip += code->next;
1355 }
1356
1357
1358 void
1359 ngx_http_script_equal_code(ngx_http_script_engine_t *e)
1360 {
1361 ngx_http_variable_value_t *val, *res;
1362
1363 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1364 "http script equal");
1365
1366 e->sp--;
1367 val = e->sp;
1368 res = e->sp - 1;
1369
1370 e->ip += sizeof(uintptr_t);
1371
1372 if (val->len == res->len
1373 && ngx_strncmp(val->data, res->data, res->len) == 0)
1374 {
1375 *res = ngx_http_variable_true_value;
1376 return;
1377 }
1378
1379 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1380 "http script equal: no");
1381
1382 *res = ngx_http_variable_null_value;
1383 }
1384
1385
1386 void
1387 ngx_http_script_not_equal_code(ngx_http_script_engine_t *e)
1388 {
1389 ngx_http_variable_value_t *val, *res;
1390
1391 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1392 "http script not equal");
1393
1394 e->sp--;
1395 val = e->sp;
1396 res = e->sp - 1;
1397
1398 e->ip += sizeof(uintptr_t);
1399
1400 if (val->len == res->len
1401 && ngx_strncmp(val->data, res->data, res->len) == 0)
1402 {
1403 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1404 "http script not equal: no");
1405
1406 *res = ngx_http_variable_null_value;
1407 return;
1408 }
1409
1410 *res = ngx_http_variable_true_value;
1411 }
1412
1413
1414 void
1415 ngx_http_script_more_code(ngx_http_script_engine_t *e)
1416 {
1417 ngx_int_t v, r;
1418
1419 ngx_http_variable_value_t *val, *res;
1420
1421 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1422 "http script more");
1423
1424 e->sp--;
1425 val = e->sp;
1426 res = e->sp - 1;
1427
1428 e->ip += sizeof(uintptr_t);
1429
1430 v = ngx_atoi(val->data, val->len);
1431 if (v == NGX_ERROR) {
1432 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1433 "http script more: val isn't number");
1434
1435 *res = ngx_http_variable_null_value;
1436 return;
1437 }
1438
1439 r = ngx_atoi(res->data, res->len);
1440 if (r == NGX_ERROR) {
1441 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1442 "http script more: res isn't number");
1443
1444 *res = ngx_http_variable_null_value;
1445 return;
1446 }
1447
1448 if (r > v) {
1449 *res = ngx_http_variable_true_value;
1450 return;
1451 }
1452
1453 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1454 "http script more: no");
1455
1456 *res = ngx_http_variable_null_value;
1457 }
1458
1459
1460 void
1461 ngx_http_script_not_more_code(ngx_http_script_engine_t *e)
1462 {
1463 ngx_int_t v, r;
1464
1465 ngx_http_variable_value_t *val, *res;
1466
1467 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1468 "http script not more");
1469
1470 e->sp--;
1471 val = e->sp;
1472 res = e->sp - 1;
1473
1474 e->ip += sizeof(uintptr_t);
1475
1476 v = ngx_atoi(val->data, val->len);
1477 if (v == NGX_ERROR) {
1478 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1479 "http script not more: val isn't number");
1480
1481 *res = ngx_http_variable_null_value;
1482 return;
1483 }
1484
1485 r = ngx_atoi(res->data, res->len);
1486 if (r == NGX_ERROR) {
1487 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1488 "http script more: res isn't number");
1489
1490 *res = ngx_http_variable_null_value;
1491 return;
1492 }
1493
1494 if (!(r > v)) {
1495 *res = ngx_http_variable_true_value;
1496 return;
1497 }
1498
1499 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1500 "http script not more: no");
1501
1502 *res = ngx_http_variable_true_value;
1503 }
1504
1505
1506 void
1507 ngx_http_script_less_code(ngx_http_script_engine_t *e)
1508 {
1509 ngx_int_t v, r;
1510
1511 ngx_http_variable_value_t *val, *res;
1512
1513 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1514 "http script less");
1515
1516 e->sp--;
1517 val = e->sp;
1518 res = e->sp - 1;
1519
1520 e->ip += sizeof(uintptr_t);
1521
1522 v = ngx_atoi(val->data, val->len);
1523 if (v == NGX_ERROR) {
1524 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1525 "http script less: val isn't number");
1526
1527 *res = ngx_http_variable_null_value;
1528 return;
1529 }
1530
1531 r = ngx_atoi(res->data, res->len);
1532 if (r == NGX_ERROR) {
1533 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1534 "http script less: res isn't number");
1535
1536 *res = ngx_http_variable_null_value;
1537 return;
1538 }
1539
1540 if (r < v) {
1541 *res = ngx_http_variable_true_value;
1542 return;
1543 }
1544
1545 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1546 "http script less: no");
1547
1548 *res = ngx_http_variable_null_value;
1549 }
1550
1551
1552 void
1553 ngx_http_script_not_less_code(ngx_http_script_engine_t *e)
1554 {
1555 ngx_int_t v, r;
1556
1557 ngx_http_variable_value_t *val, *res;
1558
1559 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1560 "http script not less");
1561
1562 e->sp--;
1563 val = e->sp;
1564 res = e->sp - 1;
1565
1566 e->ip += sizeof(uintptr_t);
1567
1568 v = ngx_atoi(val->data, val->len);
1569 if (v == NGX_ERROR) {
1570 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1571 "http script not less: val isn't number");
1572
1573 *res = ngx_http_variable_null_value;
1574 return;
1575 }
1576
1577 r = ngx_atoi(res->data, res->len);
1578 if (r == NGX_ERROR) {
1579 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1580 "http script less: res isn't number");
1581
1582 *res = ngx_http_variable_null_value;
1583 return;
1584 }
1585
1586 if (!(r < v)) {
1587 *res = ngx_http_variable_true_value;
1588 return;
1589 }
1590
1591 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1592 "http script not less: no");
1593
1594 *res = ngx_http_variable_null_value;
1595 }
1596
1597
1598 void
1599 ngx_http_script_file_code(ngx_http_script_engine_t *e)
1600 {
1601 ngx_str_t path;
1602 ngx_http_request_t *r;
1603 ngx_open_file_info_t of;
1604 ngx_http_core_loc_conf_t *clcf;
1605 ngx_http_variable_value_t *value;
1606 ngx_http_script_file_code_t *code;
1607
1608 value = e->sp - 1;
1609
1610 code = (ngx_http_script_file_code_t *) e->ip;
1611 e->ip += sizeof(ngx_http_script_file_code_t);
1612
1613 path.len = value->len - 1;
1614 path.data = value->data;
1615
1616 r = e->request;
1617
1618 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
1619 "http script file op %p \"%V\"", code->op, &path);
1620
1621 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
1622
1623 ngx_memzero(&of, sizeof(ngx_open_file_info_t));
1624
1625 of.read_ahead = clcf->read_ahead;
1626 of.directio = clcf->directio;
1627 of.valid = clcf->open_file_cache_valid;
1628 of.min_uses = clcf->open_file_cache_min_uses;
1629 of.test_only = 1;
1630 of.errors = clcf->open_file_cache_errors;
1631 of.events = clcf->open_file_cache_events;
1632
1633 if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
1634 != NGX_OK)
1635 {
1636 if (of.err != NGX_ENOENT
1637 && of.err != NGX_ENOTDIR
1638 && of.err != NGX_ENAMETOOLONG)
1639 {
1640 ngx_log_error(NGX_LOG_CRIT, r->connection->log, of.err,
1641 "%s \"%s\" failed", of.failed, value->data);
1642 }
1643
1644 switch (code->op) {
1645
1646 case ngx_http_script_file_plain:
1647 case ngx_http_script_file_dir:
1648 case ngx_http_script_file_exists:
1649 case ngx_http_script_file_exec:
1650 goto false_value;
1651
1652 case ngx_http_script_file_not_plain:
1653 case ngx_http_script_file_not_dir:
1654 case ngx_http_script_file_not_exists:
1655 case ngx_http_script_file_not_exec:
1656 goto true_value;
1657 }
1658
1659 goto false_value;
1660 }
1661
1662 switch (code->op) {
1663 case ngx_http_script_file_plain:
1664 if (of.is_file) {
1665 goto true_value;
1666 }
1667 goto false_value;
1668
1669 case ngx_http_script_file_not_plain:
1670 if (of.is_file) {
1671 goto false_value;
1672 }
1673 goto true_value;
1674
1675 case ngx_http_script_file_dir:
1676 if (of.is_dir) {
1677 goto true_value;
1678 }
1679 goto false_value;
1680
1681 case ngx_http_script_file_not_dir:
1682 if (of.is_dir) {
1683 goto false_value;
1684 }
1685 goto true_value;
1686
1687 case ngx_http_script_file_exists:
1688 if (of.is_file || of.is_dir || of.is_link) {
1689 goto true_value;
1690 }
1691 goto false_value;
1692
1693 case ngx_http_script_file_not_exists:
1694 if (of.is_file || of.is_dir || of.is_link) {
1695 goto false_value;
1696 }
1697 goto true_value;
1698
1699 case ngx_http_script_file_exec:
1700 if (of.is_exec) {
1701 goto true_value;
1702 }
1703 goto false_value;
1704
1705 case ngx_http_script_file_not_exec:
1706 if (of.is_exec) {
1707 goto false_value;
1708 }
1709 goto true_value;
1710 }
1711
1712 false_value:
1713
1714 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
1715 "http script file op false");
1716
1717 *value = ngx_http_variable_null_value;
1718 return;
1719
1720 true_value:
1721
1722 *value = ngx_http_variable_true_value;
1723 return;
1724 }
1725
1726
1727 void
1728 ngx_http_script_complex_value_code(ngx_http_script_engine_t *e)
1729 {
1730 size_t len;
1731 ngx_http_script_engine_t le;
1732 ngx_http_script_len_code_pt lcode;
1733 ngx_http_script_complex_value_code_t *code;
1734
1735 code = (ngx_http_script_complex_value_code_t *) e->ip;
1736
1737 e->ip += sizeof(ngx_http_script_complex_value_code_t);
1738
1739 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1740 "http script complex value");
1741
1742 ngx_memzero(&le, sizeof(ngx_http_script_engine_t));
1743
1744 le.ip = code->lengths->elts;
1745 le.line = e->line;
1746 le.request = e->request;
1747 le.quote = e->quote;
1748
1749 for (len = 0; *(uintptr_t *) le.ip; len += lcode(&le)) {
1750 lcode = *(ngx_http_script_len_code_pt *) le.ip;
1751 }
1752
1753 e->buf.len = len;
1754 e->buf.data = ngx_pnalloc(e->request->pool, len);
1755 if (e->buf.data == NULL) {
1756 e->ip = ngx_http_script_exit;
1757 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR;
1758 return;
1759 }
1760
1761 e->pos = e->buf.data;
1762
1763 e->sp->len = e->buf.len;
1764 e->sp->data = e->buf.data;
1765 e->sp++;
1766 }
1767
1768
1769 void
1770 ngx_http_script_value_code(ngx_http_script_engine_t *e)
1771 {
1772 ngx_http_script_value_code_t *code;
1773
1774 code = (ngx_http_script_value_code_t *) e->ip;
1775
1776 e->ip += sizeof(ngx_http_script_value_code_t);
1777
1778 e->sp->len = code->text_len;
1779 e->sp->data = (u_char *) code->text_data;
1780
1781 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1782 "http script value: \"%v\"", e->sp);
1783
1784 e->sp++;
1785 }
1786
1787
1788 void
1789 ngx_http_script_set_var_code(ngx_http_script_engine_t *e)
1790 {
1791 ngx_http_request_t *r;
1792 ngx_http_script_var_code_t *code;
1793
1794 code = (ngx_http_script_var_code_t *) e->ip;
1795
1796 e->ip += sizeof(ngx_http_script_var_code_t);
1797
1798 r = e->request;
1799
1800 e->sp--;
1801
1802 r->variables[code->index].len = e->sp->len;
1803 r->variables[code->index].valid = 1;
1804 r->variables[code->index].no_cacheable = 0;
1805 r->variables[code->index].not_found = 0;
1806 r->variables[code->index].data = e->sp->data;
1807
1808 #if (NGX_DEBUG)
1809 {
1810 ngx_http_variable_t *v;
1811 ngx_http_core_main_conf_t *cmcf;
1812
1813 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
1814
1815 v = cmcf->variables.elts;
1816
1817 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1818 "http script set $%V", &v[code->index].name);
1819 }
1820 #endif
1821 }
1822
1823
1824 void
1825 ngx_http_script_var_set_handler_code(ngx_http_script_engine_t *e)
1826 {
1827 ngx_http_script_var_handler_code_t *code;
1828
1829 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1830 "http script set var handler");
1831
1832 code = (ngx_http_script_var_handler_code_t *) e->ip;
1833
1834 e->ip += sizeof(ngx_http_script_var_handler_code_t);
1835
1836 e->sp--;
1837
1838 code->handler(e->request, e->sp, code->data);
1839 }
1840
1841
1842 void
1843 ngx_http_script_var_code(ngx_http_script_engine_t *e)
1844 {
1845 ngx_http_variable_value_t *value;
1846 ngx_http_script_var_code_t *code;
1847
1848 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1849 "http script var");
1850
1851 code = (ngx_http_script_var_code_t *) e->ip;
1852
1853 e->ip += sizeof(ngx_http_script_var_code_t);
1854
1855 value = ngx_http_get_flushed_variable(e->request, code->index);
1856
1857 if (value && !value->not_found) {
1858 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1859 "http script var: \"%v\"", value);
1860
1861 *e->sp = *value;
1862 e->sp++;
1863
1864 return;
1865 }
1866
1867 *e->sp = ngx_http_variable_null_value;
1868 e->sp++;
1869 }
1870
1871
1872 void
1873 ngx_http_script_nop_code(ngx_http_script_engine_t *e)
1874 {
1875 e->ip += sizeof(uintptr_t);
1876 }
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