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Update and clean Tomato RAF files
[tomato.git] / release / src / router / nginx / src / http / ngx_http_script.c
blob54d019589a95b4f3e8085ce1fcc36bea44f0d363
1
2 /*
3 * Copyright (C) Igor Sysoev
4 * Copyright (C) Nginx, Inc.
5 */
6
7
8 #include <ngx_config.h>
9 #include <ngx_core.h>
10 #include <ngx_http.h>
11
12
13 static ngx_int_t ngx_http_script_init_arrays(ngx_http_script_compile_t *sc);
14 static ngx_int_t ngx_http_script_done(ngx_http_script_compile_t *sc);
15 static ngx_int_t ngx_http_script_add_copy_code(ngx_http_script_compile_t *sc,
16 ngx_str_t *value, ngx_uint_t last);
17 static ngx_int_t ngx_http_script_add_var_code(ngx_http_script_compile_t *sc,
18 ngx_str_t *name);
19 static ngx_int_t ngx_http_script_add_args_code(ngx_http_script_compile_t *sc);
20 #if (NGX_PCRE)
21 static ngx_int_t ngx_http_script_add_capture_code(ngx_http_script_compile_t *sc,
22 ngx_uint_t n);
23 #endif
24 static ngx_int_t
25 ngx_http_script_add_full_name_code(ngx_http_script_compile_t *sc);
26 static size_t ngx_http_script_full_name_len_code(ngx_http_script_engine_t *e);
27 static void ngx_http_script_full_name_code(ngx_http_script_engine_t *e);
28
29
30 #define ngx_http_script_exit (u_char *) &ngx_http_script_exit_code
31
32 static uintptr_t ngx_http_script_exit_code = (uintptr_t) NULL;
33
34
35 void
36 ngx_http_script_flush_complex_value(ngx_http_request_t *r,
37 ngx_http_complex_value_t *val)
38 {
39 ngx_uint_t *index;
40
41 index = val->flushes;
42
43 if (index) {
44 while (*index != (ngx_uint_t) -1) {
45
46 if (r->variables[*index].no_cacheable) {
47 r->variables[*index].valid = 0;
48 r->variables[*index].not_found = 0;
49 }
50
51 index++;
52 }
53 }
54 }
55
56
57 ngx_int_t
58 ngx_http_complex_value(ngx_http_request_t *r, ngx_http_complex_value_t *val,
59 ngx_str_t *value)
60 {
61 size_t len;
62 ngx_http_script_code_pt code;
63 ngx_http_script_len_code_pt lcode;
64 ngx_http_script_engine_t e;
65
66 if (val->lengths == NULL) {
67 *value = val->value;
68 return NGX_OK;
69 }
70
71 ngx_http_script_flush_complex_value(r, val);
72
73 ngx_memzero(&e, sizeof(ngx_http_script_engine_t));
74
75 e.ip = val->lengths;
76 e.request = r;
77 e.flushed = 1;
78
79 len = 0;
80
81 while (*(uintptr_t *) e.ip) {
82 lcode = *(ngx_http_script_len_code_pt *) e.ip;
83 len += lcode(&e);
84 }
85
86 value->len = len;
87 value->data = ngx_pnalloc(r->pool, len);
88 if (value->data == NULL) {
89 return NGX_ERROR;
90 }
91
92 e.ip = val->values;
93 e.pos = value->data;
94 e.buf = *value;
95
96 while (*(uintptr_t *) e.ip) {
97 code = *(ngx_http_script_code_pt *) e.ip;
98 code((ngx_http_script_engine_t *) &e);
99 }
100
101 *value = e.buf;
102
103 return NGX_OK;
104 }
105
106
107 ngx_int_t
108 ngx_http_compile_complex_value(ngx_http_compile_complex_value_t *ccv)
109 {
110 ngx_str_t *v;
111 ngx_uint_t i, n, nv, nc;
112 ngx_array_t flushes, lengths, values, *pf, *pl, *pv;
113 ngx_http_script_compile_t sc;
114
115 v = ccv->value;
116
117 nv = 0;
118 nc = 0;
119
120 for (i = 0; i < v->len; i++) {
121 if (v->data[i] == '$') {
122 if (v->data[i + 1] >= '1' && v->data[i + 1] <= '9') {
123 nc++;
124
125 } else {
126 nv++;
127 }
128 }
129 }
130
131 if ((v->len == 0 || v->data[0] != '$')
132 && (ccv->conf_prefix || ccv->root_prefix))
133 {
134 if (ngx_conf_full_name(ccv->cf->cycle, v, ccv->conf_prefix) != NGX_OK) {
135 return NGX_ERROR;
136 }
137
138 ccv->conf_prefix = 0;
139 ccv->root_prefix = 0;
140 }
141
142 ccv->complex_value->value = *v;
143 ccv->complex_value->flushes = NULL;
144 ccv->complex_value->lengths = NULL;
145 ccv->complex_value->values = NULL;
146
147 if (nv == 0 && nc == 0) {
148 return NGX_OK;
149 }
150
151 n = nv + 1;
152
153 if (ngx_array_init(&flushes, ccv->cf->pool, n, sizeof(ngx_uint_t))
154 != NGX_OK)
155 {
156 return NGX_ERROR;
157 }
158
159 n = nv * (2 * sizeof(ngx_http_script_copy_code_t)
160 + sizeof(ngx_http_script_var_code_t))
161 + sizeof(uintptr_t);
162
163 if (ngx_array_init(&lengths, ccv->cf->pool, n, 1) != NGX_OK) {
164 return NGX_ERROR;
165 }
166
167 n = (nv * (2 * sizeof(ngx_http_script_copy_code_t)
168 + sizeof(ngx_http_script_var_code_t))
169 + sizeof(uintptr_t)
170 + v->len
171 + sizeof(uintptr_t) - 1)
172 & ~(sizeof(uintptr_t) - 1);
173
174 if (ngx_array_init(&values, ccv->cf->pool, n, 1) != NGX_OK) {
175 return NGX_ERROR;
176 }
177
178 pf = &flushes;
179 pl = &lengths;
180 pv = &values;
181
182 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t));
183
184 sc.cf = ccv->cf;
185 sc.source = v;
186 sc.flushes = &pf;
187 sc.lengths = &pl;
188 sc.values = &pv;
189 sc.complete_lengths = 1;
190 sc.complete_values = 1;
191 sc.zero = ccv->zero;
192 sc.conf_prefix = ccv->conf_prefix;
193 sc.root_prefix = ccv->root_prefix;
194
195 if (ngx_http_script_compile(&sc) != NGX_OK) {
196 return NGX_ERROR;
197 }
198
199 if (flushes.nelts) {
200 ccv->complex_value->flushes = flushes.elts;
201 ccv->complex_value->flushes[flushes.nelts] = (ngx_uint_t) -1;
202 }
203
204 ccv->complex_value->lengths = lengths.elts;
205 ccv->complex_value->values = values.elts;
206
207 return NGX_OK;
208 }
209
210
211 char *
212 ngx_http_set_complex_value_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
213 {
214 char *p = conf;
215
216 ngx_str_t *value;
217 ngx_http_complex_value_t **cv;
218 ngx_http_compile_complex_value_t ccv;
219
220 cv = (ngx_http_complex_value_t **) (p + cmd->offset);
221
222 if (*cv != NULL) {
223 return "duplicate";
224 }
225
226 *cv = ngx_palloc(cf->pool, sizeof(ngx_http_complex_value_t));
227 if (*cv == NULL) {
228 return NGX_CONF_ERROR;
229 }
230
231 value = cf->args->elts;
232
233 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
234
235 ccv.cf = cf;
236 ccv.value = &value[1];
237 ccv.complex_value = *cv;
238
239 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
240 return NGX_CONF_ERROR;
241 }
242
243 return NGX_CONF_OK;
244 }
245
246
247 ngx_int_t
248 ngx_http_test_predicates(ngx_http_request_t *r, ngx_array_t *predicates)
249 {
250 ngx_str_t val;
251 ngx_uint_t i;
252 ngx_http_complex_value_t *cv;
253
254 if (predicates == NULL) {
255 return NGX_OK;
256 }
257
258 cv = predicates->elts;
259
260 for (i = 0; i < predicates->nelts; i++) {
261 if (ngx_http_complex_value(r, &cv[i], &val) != NGX_OK) {
262 return NGX_ERROR;
263 }
264
265 if (val.len && (val.len != 1 || val.data[0] != '0')) {
266 return NGX_DECLINED;
267 }
268 }
269
270 return NGX_OK;
271 }
272
273
274 char *
275 ngx_http_set_predicate_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
276 {
277 char *p = conf;
278
279 ngx_str_t *value;
280 ngx_uint_t i;
281 ngx_array_t **a;
282 ngx_http_complex_value_t *cv;
283 ngx_http_compile_complex_value_t ccv;
284
285 a = (ngx_array_t **) (p + cmd->offset);
286
287 if (*a == NGX_CONF_UNSET_PTR) {
288 *a = ngx_array_create(cf->pool, 1, sizeof(ngx_http_complex_value_t));
289 if (*a == NULL) {
290 return NGX_CONF_ERROR;
291 }
292 }
293
294 value = cf->args->elts;
295
296 for (i = 1; i < cf->args->nelts; i++) {
297 cv = ngx_array_push(*a);
298 if (cv == NULL) {
299 return NGX_CONF_ERROR;
300 }
301
302 ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
303
304 ccv.cf = cf;
305 ccv.value = &value[i];
306 ccv.complex_value = cv;
307
308 if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
309 return NGX_CONF_ERROR;
310 }
311 }
312
313 return NGX_CONF_OK;
314 }
315
316
317 ngx_uint_t
318 ngx_http_script_variables_count(ngx_str_t *value)
319 {
320 ngx_uint_t i, n;
321
322 for (n = 0, i = 0; i < value->len; i++) {
323 if (value->data[i] == '$') {
324 n++;
325 }
326 }
327
328 return n;
329 }
330
331
332 ngx_int_t
333 ngx_http_script_compile(ngx_http_script_compile_t *sc)
334 {
335 u_char ch;
336 ngx_str_t name;
337 ngx_uint_t i, bracket;
338
339 if (ngx_http_script_init_arrays(sc) != NGX_OK) {
340 return NGX_ERROR;
341 }
342
343 for (i = 0; i < sc->source->len; /* void */ ) {
344
345 name.len = 0;
346
347 if (sc->source->data[i] == '$') {
348
349 if (++i == sc->source->len) {
350 goto invalid_variable;
351 }
352
353 #if (NGX_PCRE)
354 {
355 ngx_uint_t n;
356
357 if (sc->source->data[i] >= '1' && sc->source->data[i] <= '9') {
358
359 n = sc->source->data[i] - '0';
360
361 if (sc->captures_mask & (1 << n)) {
362 sc->dup_capture = 1;
363 }
364
365 sc->captures_mask |= 1 << n;
366
367 if (ngx_http_script_add_capture_code(sc, n) != NGX_OK) {
368 return NGX_ERROR;
369 }
370
371 i++;
372
373 continue;
374 }
375 }
376 #endif
377
378 if (sc->source->data[i] == '{') {
379 bracket = 1;
380
381 if (++i == sc->source->len) {
382 goto invalid_variable;
383 }
384
385 name.data = &sc->source->data[i];
386
387 } else {
388 bracket = 0;
389 name.data = &sc->source->data[i];
390 }
391
392 for ( /* void */ ; i < sc->source->len; i++, name.len++) {
393 ch = sc->source->data[i];
394
395 if (ch == '}' && bracket) {
396 i++;
397 bracket = 0;
398 break;
399 }
400
401 if ((ch >= 'A' && ch <= 'Z')
402 || (ch >= 'a' && ch <= 'z')
403 || (ch >= '0' && ch <= '9')
404 || ch == '_')
405 {
406 continue;
407 }
408
409 break;
410 }
411
412 if (bracket) {
413 ngx_conf_log_error(NGX_LOG_EMERG, sc->cf, 0,
414 "the closing bracket in \"%V\" "
415 "variable is missing", &name);
416 return NGX_ERROR;
417 }
418
419 if (name.len == 0) {
420 goto invalid_variable;
421 }
422
423 sc->variables++;
424
425 if (ngx_http_script_add_var_code(sc, &name) != NGX_OK) {
426 return NGX_ERROR;
427 }
428
429 continue;
430 }
431
432 if (sc->source->data[i] == '?' && sc->compile_args) {
433 sc->args = 1;
434 sc->compile_args = 0;
435
436 if (ngx_http_script_add_args_code(sc) != NGX_OK) {
437 return NGX_ERROR;
438 }
439
440 i++;
441
442 continue;
443 }
444
445 name.data = &sc->source->data[i];
446
447 while (i < sc->source->len) {
448
449 if (sc->source->data[i] == '$') {
450 break;
451 }
452
453 if (sc->source->data[i] == '?') {
454
455 sc->args = 1;
456
457 if (sc->compile_args) {
458 break;
459 }
460 }
461
462 i++;
463 name.len++;
464 }
465
466 sc->size += name.len;
467
468 if (ngx_http_script_add_copy_code(sc, &name, (i == sc->source->len))
469 != NGX_OK)
470 {
471 return NGX_ERROR;
472 }
473 }
474
475 return ngx_http_script_done(sc);
476
477 invalid_variable:
478
479 ngx_conf_log_error(NGX_LOG_EMERG, sc->cf, 0, "invalid variable name");
480
481 return NGX_ERROR;
482 }
483
484
485 u_char *
486 ngx_http_script_run(ngx_http_request_t *r, ngx_str_t *value,
487 void *code_lengths, size_t len, void *code_values)
488 {
489 ngx_uint_t i;
490 ngx_http_script_code_pt code;
491 ngx_http_script_len_code_pt lcode;
492 ngx_http_script_engine_t e;
493 ngx_http_core_main_conf_t *cmcf;
494
495 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
496
497 for (i = 0; i < cmcf->variables.nelts; i++) {
498 if (r->variables[i].no_cacheable) {
499 r->variables[i].valid = 0;
500 r->variables[i].not_found = 0;
501 }
502 }
503
504 ngx_memzero(&e, sizeof(ngx_http_script_engine_t));
505
506 e.ip = code_lengths;
507 e.request = r;
508 e.flushed = 1;
509
510 while (*(uintptr_t *) e.ip) {
511 lcode = *(ngx_http_script_len_code_pt *) e.ip;
512 len += lcode(&e);
513 }
514
515
516 value->len = len;
517 value->data = ngx_pnalloc(r->pool, len);
518 if (value->data == NULL) {
519 return NULL;
520 }
521
522 e.ip = code_values;
523 e.pos = value->data;
524
525 while (*(uintptr_t *) e.ip) {
526 code = *(ngx_http_script_code_pt *) e.ip;
527 code((ngx_http_script_engine_t *) &e);
528 }
529
530 return e.pos;
531 }
532
533
534 void
535 ngx_http_script_flush_no_cacheable_variables(ngx_http_request_t *r,
536 ngx_array_t *indices)
537 {
538 ngx_uint_t n, *index;
539
540 if (indices) {
541 index = indices->elts;
542 for (n = 0; n < indices->nelts; n++) {
543 if (r->variables[index[n]].no_cacheable) {
544 r->variables[index[n]].valid = 0;
545 r->variables[index[n]].not_found = 0;
546 }
547 }
548 }
549 }
550
551
552 static ngx_int_t
553 ngx_http_script_init_arrays(ngx_http_script_compile_t *sc)
554 {
555 ngx_uint_t n;
556
557 if (sc->flushes && *sc->flushes == NULL) {
558 n = sc->variables ? sc->variables : 1;
559 *sc->flushes = ngx_array_create(sc->cf->pool, n, sizeof(ngx_uint_t));
560 if (*sc->flushes == NULL) {
561 return NGX_ERROR;
562 }
563 }
564
565 if (*sc->lengths == NULL) {
566 n = sc->variables * (2 * sizeof(ngx_http_script_copy_code_t)
567 + sizeof(ngx_http_script_var_code_t))
568 + sizeof(uintptr_t);
569
570 *sc->lengths = ngx_array_create(sc->cf->pool, n, 1);
571 if (*sc->lengths == NULL) {
572 return NGX_ERROR;
573 }
574 }
575
576 if (*sc->values == NULL) {
577 n = (sc->variables * (2 * sizeof(ngx_http_script_copy_code_t)
578 + sizeof(ngx_http_script_var_code_t))
579 + sizeof(uintptr_t)
580 + sc->source->len
581 + sizeof(uintptr_t) - 1)
582 & ~(sizeof(uintptr_t) - 1);
583
584 *sc->values = ngx_array_create(sc->cf->pool, n, 1);
585 if (*sc->values == NULL) {
586 return NGX_ERROR;
587 }
588 }
589
590 sc->variables = 0;
591
592 return NGX_OK;
593 }
594
595
596 static ngx_int_t
597 ngx_http_script_done(ngx_http_script_compile_t *sc)
598 {
599 ngx_str_t zero;
600 uintptr_t *code;
601
602 if (sc->zero) {
603
604 zero.len = 1;
605 zero.data = (u_char *) "\0";
606
607 if (ngx_http_script_add_copy_code(sc, &zero, 0) != NGX_OK) {
608 return NGX_ERROR;
609 }
610 }
611
612 if (sc->conf_prefix || sc->root_prefix) {
613 if (ngx_http_script_add_full_name_code(sc) != NGX_OK) {
614 return NGX_ERROR;
615 }
616 }
617
618 if (sc->complete_lengths) {
619 code = ngx_http_script_add_code(*sc->lengths, sizeof(uintptr_t), NULL);
620 if (code == NULL) {
621 return NGX_ERROR;
622 }
623
624 *code = (uintptr_t) NULL;
625 }
626
627 if (sc->complete_values) {
628 code = ngx_http_script_add_code(*sc->values, sizeof(uintptr_t),
629 &sc->main);
630 if (code == NULL) {
631 return NGX_ERROR;
632 }
633
634 *code = (uintptr_t) NULL;
635 }
636
637 return NGX_OK;
638 }
639
640
641 void *
642 ngx_http_script_start_code(ngx_pool_t *pool, ngx_array_t **codes, size_t size)
643 {
644 if (*codes == NULL) {
645 *codes = ngx_array_create(pool, 256, 1);
646 if (*codes == NULL) {
647 return NULL;
648 }
649 }
650
651 return ngx_array_push_n(*codes, size);
652 }
653
654
655 void *
656 ngx_http_script_add_code(ngx_array_t *codes, size_t size, void *code)
657 {
658 u_char *elts, **p;
659 void *new;
660
661 elts = codes->elts;
662
663 new = ngx_array_push_n(codes, size);
664 if (new == NULL) {
665 return NULL;
666 }
667
668 if (code) {
669 if (elts != codes->elts) {
670 p = code;
671 *p += (u_char *) codes->elts - elts;
672 }
673 }
674
675 return new;
676 }
677
678
679 static ngx_int_t
680 ngx_http_script_add_copy_code(ngx_http_script_compile_t *sc, ngx_str_t *value,
681 ngx_uint_t last)
682 {
683 u_char *p;
684 size_t size, len, zero;
685 ngx_http_script_copy_code_t *code;
686
687 zero = (sc->zero && last);
688 len = value->len + zero;
689
690 code = ngx_http_script_add_code(*sc->lengths,
691 sizeof(ngx_http_script_copy_code_t), NULL);
692 if (code == NULL) {
693 return NGX_ERROR;
694 }
695
696 code->code = (ngx_http_script_code_pt) ngx_http_script_copy_len_code;
697 code->len = len;
698
699 size = (sizeof(ngx_http_script_copy_code_t) + len + sizeof(uintptr_t) - 1)
700 & ~(sizeof(uintptr_t) - 1);
701
702 code = ngx_http_script_add_code(*sc->values, size, &sc->main);
703 if (code == NULL) {
704 return NGX_ERROR;
705 }
706
707 code->code = ngx_http_script_copy_code;
708 code->len = len;
709
710 p = ngx_cpymem((u_char *) code + sizeof(ngx_http_script_copy_code_t),
711 value->data, value->len);
712
713 if (zero) {
714 *p = '\0';
715 sc->zero = 0;
716 }
717
718 return NGX_OK;
719 }
720
721
722 size_t
723 ngx_http_script_copy_len_code(ngx_http_script_engine_t *e)
724 {
725 ngx_http_script_copy_code_t *code;
726
727 code = (ngx_http_script_copy_code_t *) e->ip;
728
729 e->ip += sizeof(ngx_http_script_copy_code_t);
730
731 return code->len;
732 }
733
734
735 void
736 ngx_http_script_copy_code(ngx_http_script_engine_t *e)
737 {
738 u_char *p;
739 ngx_http_script_copy_code_t *code;
740
741 code = (ngx_http_script_copy_code_t *) e->ip;
742
743 p = e->pos;
744
745 if (!e->skip) {
746 e->pos = ngx_copy(p, e->ip + sizeof(ngx_http_script_copy_code_t),
747 code->len);
748 }
749
750 e->ip += sizeof(ngx_http_script_copy_code_t)
751 + ((code->len + sizeof(uintptr_t) - 1) & ~(sizeof(uintptr_t) - 1));
752
753 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
754 "http script copy: \"%*s\"", e->pos - p, p);
755 }
756
757
758 static ngx_int_t
759 ngx_http_script_add_var_code(ngx_http_script_compile_t *sc, ngx_str_t *name)
760 {
761 ngx_int_t index, *p;
762 ngx_http_script_var_code_t *code;
763
764 index = ngx_http_get_variable_index(sc->cf, name);
765
766 if (index == NGX_ERROR) {
767 return NGX_ERROR;
768 }
769
770 if (sc->flushes) {
771 p = ngx_array_push(*sc->flushes);
772 if (p == NULL) {
773 return NGX_ERROR;
774 }
775
776 *p = index;
777 }
778
779 code = ngx_http_script_add_code(*sc->lengths,
780 sizeof(ngx_http_script_var_code_t), NULL);
781 if (code == NULL) {
782 return NGX_ERROR;
783 }
784
785 code->code = (ngx_http_script_code_pt) ngx_http_script_copy_var_len_code;
786 code->index = (uintptr_t) index;
787
788 code = ngx_http_script_add_code(*sc->values,
789 sizeof(ngx_http_script_var_code_t),
790 &sc->main);
791 if (code == NULL) {
792 return NGX_ERROR;
793 }
794
795 code->code = ngx_http_script_copy_var_code;
796 code->index = (uintptr_t) index;
797
798 return NGX_OK;
799 }
800
801
802 size_t
803 ngx_http_script_copy_var_len_code(ngx_http_script_engine_t *e)
804 {
805 ngx_http_variable_value_t *value;
806 ngx_http_script_var_code_t *code;
807
808 code = (ngx_http_script_var_code_t *) e->ip;
809
810 e->ip += sizeof(ngx_http_script_var_code_t);
811
812 if (e->flushed) {
813 value = ngx_http_get_indexed_variable(e->request, code->index);
814
815 } else {
816 value = ngx_http_get_flushed_variable(e->request, code->index);
817 }
818
819 if (value && !value->not_found) {
820 return value->len;
821 }
822
823 return 0;
824 }
825
826
827 void
828 ngx_http_script_copy_var_code(ngx_http_script_engine_t *e)
829 {
830 u_char *p;
831 ngx_http_variable_value_t *value;
832 ngx_http_script_var_code_t *code;
833
834 code = (ngx_http_script_var_code_t *) e->ip;
835
836 e->ip += sizeof(ngx_http_script_var_code_t);
837
838 if (!e->skip) {
839
840 if (e->flushed) {
841 value = ngx_http_get_indexed_variable(e->request, code->index);
842
843 } else {
844 value = ngx_http_get_flushed_variable(e->request, code->index);
845 }
846
847 if (value && !value->not_found) {
848 p = e->pos;
849 e->pos = ngx_copy(p, value->data, value->len);
850
851 ngx_log_debug2(NGX_LOG_DEBUG_HTTP,
852 e->request->connection->log, 0,
853 "http script var: \"%*s\"", e->pos - p, p);
854 }
855 }
856 }
857
858
859 static ngx_int_t
860 ngx_http_script_add_args_code(ngx_http_script_compile_t *sc)
861 {
862 uintptr_t *code;
863
864 code = ngx_http_script_add_code(*sc->lengths, sizeof(uintptr_t), NULL);
865 if (code == NULL) {
866 return NGX_ERROR;
867 }
868
869 *code = (uintptr_t) ngx_http_script_mark_args_code;
870
871 code = ngx_http_script_add_code(*sc->values, sizeof(uintptr_t), &sc->main);
872 if (code == NULL) {
873 return NGX_ERROR;
874 }
875
876 *code = (uintptr_t) ngx_http_script_start_args_code;
877
878 return NGX_OK;
879 }
880
881
882 size_t
883 ngx_http_script_mark_args_code(ngx_http_script_engine_t *e)
884 {
885 e->is_args = 1;
886 e->ip += sizeof(uintptr_t);
887
888 return 1;
889 }
890
891
892 void
893 ngx_http_script_start_args_code(ngx_http_script_engine_t *e)
894 {
895 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
896 "http script args");
897
898 e->is_args = 1;
899 e->args = e->pos;
900 e->ip += sizeof(uintptr_t);
901 }
902
903
904 #if (NGX_PCRE)
905
906 void
907 ngx_http_script_regex_start_code(ngx_http_script_engine_t *e)
908 {
909 size_t len;
910 ngx_int_t rc;
911 ngx_uint_t n;
912 ngx_http_request_t *r;
913 ngx_http_script_engine_t le;
914 ngx_http_script_len_code_pt lcode;
915 ngx_http_script_regex_code_t *code;
916
917 code = (ngx_http_script_regex_code_t *) e->ip;
918
919 r = e->request;
920
921 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
922 "http script regex: \"%V\"", &code->name);
923
924 if (code->uri) {
925 e->line = r->uri;
926 } else {
927 e->sp--;
928 e->line.len = e->sp->len;
929 e->line.data = e->sp->data;
930 }
931
932 rc = ngx_http_regex_exec(r, code->regex, &e->line);
933
934 if (rc == NGX_DECLINED) {
935 if (e->log || (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP)) {
936 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0,
937 "\"%V\" does not match \"%V\"",
938 &code->name, &e->line);
939 }
940
941 r->ncaptures = 0;
942
943 if (code->test) {
944 if (code->negative_test) {
945 e->sp->len = 1;
946 e->sp->data = (u_char *) "1";
947
948 } else {
949 e->sp->len = 0;
950 e->sp->data = (u_char *) "";
951 }
952
953 e->sp++;
954
955 e->ip += sizeof(ngx_http_script_regex_code_t);
956 return;
957 }
958
959 e->ip += code->next;
960 return;
961 }
962
963 if (rc == NGX_ERROR) {
964 e->ip = ngx_http_script_exit;
965 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR;
966 return;
967 }
968
969 if (e->log || (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP)) {
970 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0,
971 "\"%V\" matches \"%V\"", &code->name, &e->line);
972 }
973
974 if (code->test) {
975 if (code->negative_test) {
976 e->sp->len = 0;
977 e->sp->data = (u_char *) "";
978
979 } else {
980 e->sp->len = 1;
981 e->sp->data = (u_char *) "1";
982 }
983
984 e->sp++;
985
986 e->ip += sizeof(ngx_http_script_regex_code_t);
987 return;
988 }
989
990 if (code->status) {
991 e->status = code->status;
992
993 if (!code->redirect) {
994 e->ip = ngx_http_script_exit;
995 return;
996 }
997 }
998
999 if (code->uri) {
1000 r->internal = 1;
1001 r->valid_unparsed_uri = 0;
1002
1003 if (code->break_cycle) {
1004 r->valid_location = 0;
1005 r->uri_changed = 0;
1006
1007 } else {
1008 r->uri_changed = 1;
1009 }
1010 }
1011
1012 if (code->lengths == NULL) {
1013 e->buf.len = code->size;
1014
1015 if (code->uri) {
1016 if (r->ncaptures && (r->quoted_uri || r->plus_in_uri)) {
1017 e->buf.len += 2 * ngx_escape_uri(NULL, r->uri.data, r->uri.len,
1018 NGX_ESCAPE_ARGS);
1019 }
1020 }
1021
1022 for (n = 2; n < r->ncaptures; n += 2) {
1023 e->buf.len += r->captures[n + 1] - r->captures[n];
1024 }
1025
1026 } else {
1027 ngx_memzero(&le, sizeof(ngx_http_script_engine_t));
1028
1029 le.ip = code->lengths->elts;
1030 le.line = e->line;
1031 le.request = r;
1032 le.quote = code->redirect;
1033
1034 len = 0;
1035
1036 while (*(uintptr_t *) le.ip) {
1037 lcode = *(ngx_http_script_len_code_pt *) le.ip;
1038 len += lcode(&le);
1039 }
1040
1041 e->buf.len = len;
1042 }
1043
1044 if (code->add_args && r->args.len) {
1045 e->buf.len += r->args.len + 1;
1046 }
1047
1048 e->buf.data = ngx_pnalloc(r->pool, e->buf.len);
1049 if (e->buf.data == NULL) {
1050 e->ip = ngx_http_script_exit;
1051 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR;
1052 return;
1053 }
1054
1055 e->quote = code->redirect;
1056
1057 e->pos = e->buf.data;
1058
1059 e->ip += sizeof(ngx_http_script_regex_code_t);
1060 }
1061
1062
1063 void
1064 ngx_http_script_regex_end_code(ngx_http_script_engine_t *e)
1065 {
1066 u_char *dst, *src;
1067 ngx_http_request_t *r;
1068 ngx_http_script_regex_end_code_t *code;
1069
1070 code = (ngx_http_script_regex_end_code_t *) e->ip;
1071
1072 r = e->request;
1073
1074 e->quote = 0;
1075
1076 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
1077 "http script regex end");
1078
1079 if (code->redirect) {
1080
1081 dst = e->buf.data;
1082 src = e->buf.data;
1083
1084 ngx_unescape_uri(&dst, &src, e->pos - e->buf.data,
1085 NGX_UNESCAPE_REDIRECT);
1086
1087 if (src < e->pos) {
1088 dst = ngx_movemem(dst, src, e->pos - src);
1089 }
1090
1091 e->pos = dst;
1092
1093 if (code->add_args && r->args.len) {
1094 *e->pos++ = (u_char) (code->args ? '&' : '?');
1095 e->pos = ngx_copy(e->pos, r->args.data, r->args.len);
1096 }
1097
1098 e->buf.len = e->pos - e->buf.data;
1099
1100 if (e->log || (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP)) {
1101 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0,
1102 "rewritten redirect: \"%V\"", &e->buf);
1103 }
1104
1105 ngx_http_clear_location(r);
1106
1107 r->headers_out.location = ngx_list_push(&r->headers_out.headers);
1108 if (r->headers_out.location == NULL) {
1109 e->ip = ngx_http_script_exit;
1110 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR;
1111 return;
1112 }
1113
1114 r->headers_out.location->hash = 1;
1115 ngx_str_set(&r->headers_out.location->key, "Location");
1116 r->headers_out.location->value = e->buf;
1117
1118 e->ip += sizeof(ngx_http_script_regex_end_code_t);
1119 return;
1120 }
1121
1122 if (e->args) {
1123 e->buf.len = e->args - e->buf.data;
1124
1125 if (code->add_args && r->args.len) {
1126 *e->pos++ = '&';
1127 e->pos = ngx_copy(e->pos, r->args.data, r->args.len);
1128 }
1129
1130 r->args.len = e->pos - e->args;
1131 r->args.data = e->args;
1132
1133 e->args = NULL;
1134
1135 } else {
1136 e->buf.len = e->pos - e->buf.data;
1137
1138 if (!code->add_args) {
1139 r->args.len = 0;
1140 }
1141 }
1142
1143 if (e->log || (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP)) {
1144 ngx_log_error(NGX_LOG_NOTICE, r->connection->log, 0,
1145 "rewritten data: \"%V\", args: \"%V\"",
1146 &e->buf, &r->args);
1147 }
1148
1149 if (code->uri) {
1150 r->uri = e->buf;
1151
1152 if (r->uri.len == 0) {
1153 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
1154 "the rewritten URI has a zero length");
1155 e->ip = ngx_http_script_exit;
1156 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR;
1157 return;
1158 }
1159
1160 ngx_http_set_exten(r);
1161 }
1162
1163 e->ip += sizeof(ngx_http_script_regex_end_code_t);
1164 }
1165
1166
1167 static ngx_int_t
1168 ngx_http_script_add_capture_code(ngx_http_script_compile_t *sc, ngx_uint_t n)
1169 {
1170 ngx_http_script_copy_capture_code_t *code;
1171
1172 code = ngx_http_script_add_code(*sc->lengths,
1173 sizeof(ngx_http_script_copy_capture_code_t),
1174 NULL);
1175 if (code == NULL) {
1176 return NGX_ERROR;
1177 }
1178
1179 code->code = (ngx_http_script_code_pt)
1180 ngx_http_script_copy_capture_len_code;
1181 code->n = 2 * n;
1182
1183
1184 code = ngx_http_script_add_code(*sc->values,
1185 sizeof(ngx_http_script_copy_capture_code_t),
1186 &sc->main);
1187 if (code == NULL) {
1188 return NGX_ERROR;
1189 }
1190
1191 code->code = ngx_http_script_copy_capture_code;
1192 code->n = 2 * n;
1193
1194 if (sc->ncaptures < n) {
1195 sc->ncaptures = n;
1196 }
1197
1198 return NGX_OK;
1199 }
1200
1201
1202 size_t
1203 ngx_http_script_copy_capture_len_code(ngx_http_script_engine_t *e)
1204 {
1205 int *cap;
1206 u_char *p;
1207 ngx_uint_t n;
1208 ngx_http_request_t *r;
1209 ngx_http_script_copy_capture_code_t *code;
1210
1211 r = e->request;
1212
1213 code = (ngx_http_script_copy_capture_code_t *) e->ip;
1214
1215 e->ip += sizeof(ngx_http_script_copy_capture_code_t);
1216
1217 n = code->n;
1218
1219 if (n < r->ncaptures) {
1220
1221 cap = r->captures;
1222
1223 if ((e->is_args || e->quote)
1224 && (e->request->quoted_uri || e->request->plus_in_uri))
1225 {
1226 p = r->captures_data;
1227
1228 return cap[n + 1] - cap[n]
1229 + 2 * ngx_escape_uri(NULL, &p[cap[n]], cap[n + 1] - cap[n],
1230 NGX_ESCAPE_ARGS);
1231 } else {
1232 return cap[n + 1] - cap[n];
1233 }
1234 }
1235
1236 return 0;
1237 }
1238
1239
1240 void
1241 ngx_http_script_copy_capture_code(ngx_http_script_engine_t *e)
1242 {
1243 int *cap;
1244 u_char *p, *pos;
1245 ngx_uint_t n;
1246 ngx_http_request_t *r;
1247 ngx_http_script_copy_capture_code_t *code;
1248
1249 r = e->request;
1250
1251 code = (ngx_http_script_copy_capture_code_t *) e->ip;
1252
1253 e->ip += sizeof(ngx_http_script_copy_capture_code_t);
1254
1255 n = code->n;
1256
1257 pos = e->pos;
1258
1259 if (n < r->ncaptures) {
1260
1261 cap = r->captures;
1262 p = r->captures_data;
1263
1264 if ((e->is_args || e->quote)
1265 && (e->request->quoted_uri || e->request->plus_in_uri))
1266 {
1267 e->pos = (u_char *) ngx_escape_uri(pos, &p[cap[n]],
1268 cap[n + 1] - cap[n],
1269 NGX_ESCAPE_ARGS);
1270 } else {
1271 e->pos = ngx_copy(pos, &p[cap[n]], cap[n + 1] - cap[n]);
1272 }
1273 }
1274
1275 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1276 "http script capture: \"%*s\"", e->pos - pos, pos);
1277 }
1278
1279 #endif
1280
1281
1282 static ngx_int_t
1283 ngx_http_script_add_full_name_code(ngx_http_script_compile_t *sc)
1284 {
1285 ngx_http_script_full_name_code_t *code;
1286
1287 code = ngx_http_script_add_code(*sc->lengths,
1288 sizeof(ngx_http_script_full_name_code_t),
1289 NULL);
1290 if (code == NULL) {
1291 return NGX_ERROR;
1292 }
1293
1294 code->code = (ngx_http_script_code_pt) ngx_http_script_full_name_len_code;
1295 code->conf_prefix = sc->conf_prefix;
1296
1297 code = ngx_http_script_add_code(*sc->values,
1298 sizeof(ngx_http_script_full_name_code_t),
1299 &sc->main);
1300 if (code == NULL) {
1301 return NGX_ERROR;
1302 }
1303
1304 code->code = ngx_http_script_full_name_code;
1305 code->conf_prefix = sc->conf_prefix;
1306
1307 return NGX_OK;
1308 }
1309
1310
1311 static size_t
1312 ngx_http_script_full_name_len_code(ngx_http_script_engine_t *e)
1313 {
1314 ngx_http_script_full_name_code_t *code;
1315
1316 code = (ngx_http_script_full_name_code_t *) e->ip;
1317
1318 e->ip += sizeof(ngx_http_script_full_name_code_t);
1319
1320 return code->conf_prefix ? ngx_cycle->conf_prefix.len:
1321 ngx_cycle->prefix.len;
1322 }
1323
1324
1325 static void
1326 ngx_http_script_full_name_code(ngx_http_script_engine_t *e)
1327 {
1328 ngx_http_script_full_name_code_t *code;
1329
1330 ngx_str_t value;
1331
1332 code = (ngx_http_script_full_name_code_t *) e->ip;
1333
1334 value.data = e->buf.data;
1335 value.len = e->pos - e->buf.data;
1336
1337 if (ngx_conf_full_name((ngx_cycle_t *) ngx_cycle, &value, code->conf_prefix)
1338 != NGX_OK)
1339 {
1340 e->ip = ngx_http_script_exit;
1341 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR;
1342 return;
1343 }
1344
1345 e->buf = value;
1346
1347 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1348 "http script fullname: \"%V\"", &value);
1349
1350 e->ip += sizeof(ngx_http_script_full_name_code_t);
1351 }
1352
1353
1354 void
1355 ngx_http_script_return_code(ngx_http_script_engine_t *e)
1356 {
1357 ngx_http_script_return_code_t *code;
1358
1359 code = (ngx_http_script_return_code_t *) e->ip;
1360
1361 if (code->status < NGX_HTTP_BAD_REQUEST
1362 || code->text.value.len
1363 || code->text.lengths)
1364 {
1365 e->status = ngx_http_send_response(e->request, code->status, NULL,
1366 &code->text);
1367 } else {
1368 e->status = code->status;
1369 }
1370
1371 e->ip = ngx_http_script_exit;
1372 }
1373
1374
1375 void
1376 ngx_http_script_break_code(ngx_http_script_engine_t *e)
1377 {
1378 e->request->uri_changed = 0;
1379
1380 e->ip = ngx_http_script_exit;
1381 }
1382
1383
1384 void
1385 ngx_http_script_if_code(ngx_http_script_engine_t *e)
1386 {
1387 ngx_http_script_if_code_t *code;
1388
1389 code = (ngx_http_script_if_code_t *) e->ip;
1390
1391 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1392 "http script if");
1393
1394 e->sp--;
1395
1396 if (e->sp->len && (e->sp->len !=1 || e->sp->data[0] != '0')) {
1397 if (code->loc_conf) {
1398 e->request->loc_conf = code->loc_conf;
1399 ngx_http_update_location_config(e->request);
1400 }
1401
1402 e->ip += sizeof(ngx_http_script_if_code_t);
1403 return;
1404 }
1405
1406 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1407 "http script if: false");
1408
1409 e->ip += code->next;
1410 }
1411
1412
1413 void
1414 ngx_http_script_equal_code(ngx_http_script_engine_t *e)
1415 {
1416 ngx_http_variable_value_t *val, *res;
1417
1418 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1419 "http script equal");
1420
1421 e->sp--;
1422 val = e->sp;
1423 res = e->sp - 1;
1424
1425 e->ip += sizeof(uintptr_t);
1426
1427 if (val->len == res->len
1428 && ngx_strncmp(val->data, res->data, res->len) == 0)
1429 {
1430 *res = ngx_http_variable_true_value;
1431 return;
1432 }
1433
1434 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1435 "http script equal: no");
1436
1437 *res = ngx_http_variable_null_value;
1438 }
1439
1440
1441 void
1442 ngx_http_script_not_equal_code(ngx_http_script_engine_t *e)
1443 {
1444 ngx_http_variable_value_t *val, *res;
1445
1446 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1447 "http script not equal");
1448
1449 e->sp--;
1450 val = e->sp;
1451 res = e->sp - 1;
1452
1453 e->ip += sizeof(uintptr_t);
1454
1455 if (val->len == res->len
1456 && ngx_strncmp(val->data, res->data, res->len) == 0)
1457 {
1458 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1459 "http script not equal: no");
1460
1461 *res = ngx_http_variable_null_value;
1462 return;
1463 }
1464
1465 *res = ngx_http_variable_true_value;
1466 }
1467
1468
1469 void
1470 ngx_http_script_file_code(ngx_http_script_engine_t *e)
1471 {
1472 ngx_str_t path;
1473 ngx_http_request_t *r;
1474 ngx_open_file_info_t of;
1475 ngx_http_core_loc_conf_t *clcf;
1476 ngx_http_variable_value_t *value;
1477 ngx_http_script_file_code_t *code;
1478
1479 value = e->sp - 1;
1480
1481 code = (ngx_http_script_file_code_t *) e->ip;
1482 e->ip += sizeof(ngx_http_script_file_code_t);
1483
1484 path.len = value->len - 1;
1485 path.data = value->data;
1486
1487 r = e->request;
1488
1489 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
1490 "http script file op %p \"%V\"", code->op, &path);
1491
1492 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
1493
1494 ngx_memzero(&of, sizeof(ngx_open_file_info_t));
1495
1496 of.read_ahead = clcf->read_ahead;
1497 of.directio = clcf->directio;
1498 of.valid = clcf->open_file_cache_valid;
1499 of.min_uses = clcf->open_file_cache_min_uses;
1500 of.test_only = 1;
1501 of.errors = clcf->open_file_cache_errors;
1502 of.events = clcf->open_file_cache_events;
1503
1504 if (ngx_http_set_disable_symlinks(r, clcf, &path, &of) != NGX_OK) {
1505 e->ip = ngx_http_script_exit;
1506 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR;
1507 return;
1508 }
1509
1510 if (ngx_open_cached_file(clcf->open_file_cache, &path, &of, r->pool)
1511 != NGX_OK)
1512 {
1513 if (of.err != NGX_ENOENT
1514 && of.err != NGX_ENOTDIR
1515 && of.err != NGX_ENAMETOOLONG)
1516 {
1517 ngx_log_error(NGX_LOG_CRIT, r->connection->log, of.err,
1518 "%s \"%s\" failed", of.failed, value->data);
1519 }
1520
1521 switch (code->op) {
1522
1523 case ngx_http_script_file_plain:
1524 case ngx_http_script_file_dir:
1525 case ngx_http_script_file_exists:
1526 case ngx_http_script_file_exec:
1527 goto false_value;
1528
1529 case ngx_http_script_file_not_plain:
1530 case ngx_http_script_file_not_dir:
1531 case ngx_http_script_file_not_exists:
1532 case ngx_http_script_file_not_exec:
1533 goto true_value;
1534 }
1535
1536 goto false_value;
1537 }
1538
1539 switch (code->op) {
1540 case ngx_http_script_file_plain:
1541 if (of.is_file) {
1542 goto true_value;
1543 }
1544 goto false_value;
1545
1546 case ngx_http_script_file_not_plain:
1547 if (of.is_file) {
1548 goto false_value;
1549 }
1550 goto true_value;
1551
1552 case ngx_http_script_file_dir:
1553 if (of.is_dir) {
1554 goto true_value;
1555 }
1556 goto false_value;
1557
1558 case ngx_http_script_file_not_dir:
1559 if (of.is_dir) {
1560 goto false_value;
1561 }
1562 goto true_value;
1563
1564 case ngx_http_script_file_exists:
1565 if (of.is_file || of.is_dir || of.is_link) {
1566 goto true_value;
1567 }
1568 goto false_value;
1569
1570 case ngx_http_script_file_not_exists:
1571 if (of.is_file || of.is_dir || of.is_link) {
1572 goto false_value;
1573 }
1574 goto true_value;
1575
1576 case ngx_http_script_file_exec:
1577 if (of.is_exec) {
1578 goto true_value;
1579 }
1580 goto false_value;
1581
1582 case ngx_http_script_file_not_exec:
1583 if (of.is_exec) {
1584 goto false_value;
1585 }
1586 goto true_value;
1587 }
1588
1589 false_value:
1590
1591 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
1592 "http script file op false");
1593
1594 *value = ngx_http_variable_null_value;
1595 return;
1596
1597 true_value:
1598
1599 *value = ngx_http_variable_true_value;
1600 return;
1601 }
1602
1603
1604 void
1605 ngx_http_script_complex_value_code(ngx_http_script_engine_t *e)
1606 {
1607 size_t len;
1608 ngx_http_script_engine_t le;
1609 ngx_http_script_len_code_pt lcode;
1610 ngx_http_script_complex_value_code_t *code;
1611
1612 code = (ngx_http_script_complex_value_code_t *) e->ip;
1613
1614 e->ip += sizeof(ngx_http_script_complex_value_code_t);
1615
1616 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1617 "http script complex value");
1618
1619 ngx_memzero(&le, sizeof(ngx_http_script_engine_t));
1620
1621 le.ip = code->lengths->elts;
1622 le.line = e->line;
1623 le.request = e->request;
1624 le.quote = e->quote;
1625
1626 for (len = 0; *(uintptr_t *) le.ip; len += lcode(&le)) {
1627 lcode = *(ngx_http_script_len_code_pt *) le.ip;
1628 }
1629
1630 e->buf.len = len;
1631 e->buf.data = ngx_pnalloc(e->request->pool, len);
1632 if (e->buf.data == NULL) {
1633 e->ip = ngx_http_script_exit;
1634 e->status = NGX_HTTP_INTERNAL_SERVER_ERROR;
1635 return;
1636 }
1637
1638 e->pos = e->buf.data;
1639
1640 e->sp->len = e->buf.len;
1641 e->sp->data = e->buf.data;
1642 e->sp++;
1643 }
1644
1645
1646 void
1647 ngx_http_script_value_code(ngx_http_script_engine_t *e)
1648 {
1649 ngx_http_script_value_code_t *code;
1650
1651 code = (ngx_http_script_value_code_t *) e->ip;
1652
1653 e->ip += sizeof(ngx_http_script_value_code_t);
1654
1655 e->sp->len = code->text_len;
1656 e->sp->data = (u_char *) code->text_data;
1657
1658 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1659 "http script value: \"%v\"", e->sp);
1660
1661 e->sp++;
1662 }
1663
1664
1665 void
1666 ngx_http_script_set_var_code(ngx_http_script_engine_t *e)
1667 {
1668 ngx_http_request_t *r;
1669 ngx_http_script_var_code_t *code;
1670
1671 code = (ngx_http_script_var_code_t *) e->ip;
1672
1673 e->ip += sizeof(ngx_http_script_var_code_t);
1674
1675 r = e->request;
1676
1677 e->sp--;
1678
1679 r->variables[code->index].len = e->sp->len;
1680 r->variables[code->index].valid = 1;
1681 r->variables[code->index].no_cacheable = 0;
1682 r->variables[code->index].not_found = 0;
1683 r->variables[code->index].data = e->sp->data;
1684
1685 #if (NGX_DEBUG)
1686 {
1687 ngx_http_variable_t *v;
1688 ngx_http_core_main_conf_t *cmcf;
1689
1690 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
1691
1692 v = cmcf->variables.elts;
1693
1694 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1695 "http script set $%V", &v[code->index].name);
1696 }
1697 #endif
1698 }
1699
1700
1701 void
1702 ngx_http_script_var_set_handler_code(ngx_http_script_engine_t *e)
1703 {
1704 ngx_http_script_var_handler_code_t *code;
1705
1706 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1707 "http script set var handler");
1708
1709 code = (ngx_http_script_var_handler_code_t *) e->ip;
1710
1711 e->ip += sizeof(ngx_http_script_var_handler_code_t);
1712
1713 e->sp--;
1714
1715 code->handler(e->request, e->sp, code->data);
1716 }
1717
1718
1719 void
1720 ngx_http_script_var_code(ngx_http_script_engine_t *e)
1721 {
1722 ngx_http_variable_value_t *value;
1723 ngx_http_script_var_code_t *code;
1724
1725 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1726 "http script var");
1727
1728 code = (ngx_http_script_var_code_t *) e->ip;
1729
1730 e->ip += sizeof(ngx_http_script_var_code_t);
1731
1732 value = ngx_http_get_flushed_variable(e->request, code->index);
1733
1734 if (value && !value->not_found) {
1735 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, e->request->connection->log, 0,
1736 "http script var: \"%v\"", value);
1737
1738 *e->sp = *value;
1739 e->sp++;
1740
1741 return;
1742 }
1743
1744 *e->sp = ngx_http_variable_null_value;
1745 e->sp++;
1746 }
1747
1748
1749 void
1750 ngx_http_script_nop_code(ngx_http_script_engine_t *e)
1751 {
1752 e->ip += sizeof(uintptr_t);
1753 }
Tomato firmware and modifications.