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 #include <ngx_http_perl_module.h>
12
13
14 typedef struct {
15 PerlInterpreter *perl;
16 HV *nginx;
17 ngx_array_t *modules;
18 ngx_array_t *requires;
19 } ngx_http_perl_main_conf_t;
20
21
22 typedef struct {
23 SV *sub;
24 ngx_str_t handler;
25 } ngx_http_perl_loc_conf_t;
26
27
28 typedef struct {
29 SV *sub;
30 ngx_str_t handler;
31 } ngx_http_perl_variable_t;
32
33
34 #if (NGX_HTTP_SSI)
35 static ngx_int_t ngx_http_perl_ssi(ngx_http_request_t *r,
36 ngx_http_ssi_ctx_t *ssi_ctx, ngx_str_t **params);
37 #endif
38
39 static char *ngx_http_perl_init_interpreter(ngx_conf_t *cf,
40 ngx_http_perl_main_conf_t *pmcf);
41 static PerlInterpreter *ngx_http_perl_create_interpreter(ngx_conf_t *cf,
42 ngx_http_perl_main_conf_t *pmcf);
43 static ngx_int_t ngx_http_perl_run_requires(pTHX_ ngx_array_t *requires,
44 ngx_log_t *log);
45 static ngx_int_t ngx_http_perl_call_handler(pTHX_ ngx_http_request_t *r,
46 HV *nginx, SV *sub, SV **args, ngx_str_t *handler, ngx_str_t *rv);
47 static void ngx_http_perl_eval_anon_sub(pTHX_ ngx_str_t *handler, SV **sv);
48
49 static ngx_int_t ngx_http_perl_preconfiguration(ngx_conf_t *cf);
50 static void *ngx_http_perl_create_main_conf(ngx_conf_t *cf);
51 static char *ngx_http_perl_init_main_conf(ngx_conf_t *cf, void *conf);
52 static void *ngx_http_perl_create_loc_conf(ngx_conf_t *cf);
53 static char *ngx_http_perl_merge_loc_conf(ngx_conf_t *cf, void *parent,
54 void *child);
55 static char *ngx_http_perl(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
56 static char *ngx_http_perl_set(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
57
58 #if (NGX_HAVE_PERL_MULTIPLICITY)
59 static void ngx_http_perl_cleanup_perl(void *data);
60 #endif
61
62 static ngx_int_t ngx_http_perl_init_worker(ngx_cycle_t *cycle);
63 static void ngx_http_perl_exit(ngx_cycle_t *cycle);
64
65
66 static ngx_command_t ngx_http_perl_commands[] = {
67
68 { ngx_string("perl_modules"),
69 NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1,
70 ngx_conf_set_str_array_slot,
71 NGX_HTTP_MAIN_CONF_OFFSET,
72 offsetof(ngx_http_perl_main_conf_t, modules),
73 NULL },
74
75 { ngx_string("perl_require"),
76 NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1,
77 ngx_conf_set_str_array_slot,
78 NGX_HTTP_MAIN_CONF_OFFSET,
79 offsetof(ngx_http_perl_main_conf_t, requires),
80 NULL },
81
82 { ngx_string("perl"),
83 NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF|NGX_CONF_TAKE1,
84 ngx_http_perl,
85 NGX_HTTP_LOC_CONF_OFFSET,
86 0,
87 NULL },
88
89 { ngx_string("perl_set"),
90 NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE2,
91 ngx_http_perl_set,
92 NGX_HTTP_LOC_CONF_OFFSET,
93 0,
94 NULL },
95
96 ngx_null_command
97 };
98
99
100 static ngx_http_module_t ngx_http_perl_module_ctx = {
101 ngx_http_perl_preconfiguration, /* preconfiguration */
102 NULL, /* postconfiguration */
103
104 ngx_http_perl_create_main_conf, /* create main configuration */
105 ngx_http_perl_init_main_conf, /* init main configuration */
106
107 NULL, /* create server configuration */
108 NULL, /* merge server configuration */
109
110 ngx_http_perl_create_loc_conf, /* create location configuration */
111 ngx_http_perl_merge_loc_conf /* merge location configuration */
112 };
113
114
115 ngx_module_t ngx_http_perl_module = {
116 NGX_MODULE_V1,
117 &ngx_http_perl_module_ctx, /* module context */
118 ngx_http_perl_commands, /* module directives */
119 NGX_HTTP_MODULE, /* module type */
120 NULL, /* init master */
121 NULL, /* init module */
122 ngx_http_perl_init_worker, /* init process */
123 NULL, /* init thread */
124 NULL, /* exit thread */
125 NULL, /* exit process */
126 ngx_http_perl_exit, /* exit master */
127 NGX_MODULE_V1_PADDING
128 };
129
130
131 #if (NGX_HTTP_SSI)
132
133 #define NGX_HTTP_PERL_SSI_SUB 0
134 #define NGX_HTTP_PERL_SSI_ARG 1
135
136
137 static ngx_http_ssi_param_t ngx_http_perl_ssi_params[] = {
138 { ngx_string("sub"), NGX_HTTP_PERL_SSI_SUB, 1, 0 },
139 { ngx_string("arg"), NGX_HTTP_PERL_SSI_ARG, 0, 1 },
140 { ngx_null_string, 0, 0, 0 }
141 };
142
143 static ngx_http_ssi_command_t ngx_http_perl_ssi_command = {
144 ngx_string("perl"), ngx_http_perl_ssi, ngx_http_perl_ssi_params, 0, 0, 1
145 };
146
147 #endif
148
149
150 static ngx_str_t ngx_null_name = ngx_null_string;
151 static HV *nginx_stash;
152
153 #if (NGX_HAVE_PERL_MULTIPLICITY)
154 static ngx_uint_t ngx_perl_term;
155 #else
156 static PerlInterpreter *perl;
157 #endif
158
159
160 static void
ngx_http_perl_xs_init(pTHX)161 ngx_http_perl_xs_init(pTHX)
162 {
163 newXS("DynaLoader::boot_DynaLoader", boot_DynaLoader, __FILE__);
164
165 nginx_stash = gv_stashpv("nginx", TRUE);
166 }
167
168
169 static ngx_int_t
ngx_http_perl_handler(ngx_http_request_t * r)170 ngx_http_perl_handler(ngx_http_request_t *r)
171 {
172 r->main->count++;
173
174 ngx_http_perl_handle_request(r);
175
176 return NGX_DONE;
177 }
178
179
180 void
ngx_http_perl_handle_request(ngx_http_request_t * r)181 ngx_http_perl_handle_request(ngx_http_request_t *r)
182 {
183 SV *sub;
184 ngx_int_t rc;
185 ngx_str_t uri, args, *handler;
186 ngx_http_perl_ctx_t *ctx;
187 ngx_http_perl_loc_conf_t *plcf;
188 ngx_http_perl_main_conf_t *pmcf;
189
190 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "perl handler");
191
192 ctx = ngx_http_get_module_ctx(r, ngx_http_perl_module);
193
194 if (ctx == NULL) {
195 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_perl_ctx_t));
196 if (ctx == NULL) {
197 ngx_http_finalize_request(r, NGX_ERROR);
198 return;
199 }
200
201 ngx_http_set_ctx(r, ctx, ngx_http_perl_module);
202 }
203
204 pmcf = ngx_http_get_module_main_conf(r, ngx_http_perl_module);
205
206 {
207
208 dTHXa(pmcf->perl);
209 PERL_SET_CONTEXT(pmcf->perl);
210 PERL_SET_INTERP(pmcf->perl);
211
212 if (ctx->next == NULL) {
213 plcf = ngx_http_get_module_loc_conf(r, ngx_http_perl_module);
214 sub = plcf->sub;
215 handler = &plcf->handler;
216
217 } else {
218 sub = ctx->next;
219 handler = &ngx_null_name;
220 ctx->next = NULL;
221 }
222
223 rc = ngx_http_perl_call_handler(aTHX_ r, pmcf->nginx, sub, NULL, handler,
224 NULL);
225
226 }
227
228 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
229 "perl handler done: %i", rc);
230
231 if (rc == NGX_DONE) {
232 ngx_http_finalize_request(r, rc);
233 return;
234 }
235
236 if (rc > 600) {
237 rc = NGX_OK;
238 }
239
240 if (ctx->redirect_uri.len) {
241 uri = ctx->redirect_uri;
242 args = ctx->redirect_args;
243
244 } else {
245 uri.len = 0;
246 }
247
248 ctx->filename.data = NULL;
249 ctx->redirect_uri.len = 0;
250
251 if (ctx->done || ctx->next) {
252 ngx_http_finalize_request(r, NGX_DONE);
253 return;
254 }
255
256 if (uri.len) {
257 ngx_http_internal_redirect(r, &uri, &args);
258 ngx_http_finalize_request(r, NGX_DONE);
259 return;
260 }
261
262 if (rc == NGX_OK || rc == NGX_HTTP_OK) {
263 ngx_http_send_special(r, NGX_HTTP_LAST);
264 ctx->done = 1;
265 }
266
267 ngx_http_finalize_request(r, rc);
268 }
269
270
271 void
ngx_http_perl_sleep_handler(ngx_http_request_t * r)272 ngx_http_perl_sleep_handler(ngx_http_request_t *r)
273 {
274 ngx_event_t *wev;
275
276 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
277 "perl sleep handler");
278
279 wev = r->connection->write;
280
281 if (wev->delayed) {
282
283 if (ngx_handle_write_event(wev, 0) != NGX_OK) {
284 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
285 }
286
287 return;
288 }
289
290 ngx_http_perl_handle_request(r);
291 }
292
293
294 static ngx_int_t
ngx_http_perl_variable(ngx_http_request_t * r,ngx_http_variable_value_t * v,uintptr_t data)295 ngx_http_perl_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v,
296 uintptr_t data)
297 {
298 ngx_http_perl_variable_t *pv = (ngx_http_perl_variable_t *) data;
299
300 ngx_int_t rc;
301 ngx_str_t value;
302 ngx_http_perl_ctx_t *ctx;
303 ngx_http_perl_main_conf_t *pmcf;
304
305 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
306 "perl variable handler");
307
308 ctx = ngx_http_get_module_ctx(r, ngx_http_perl_module);
309
310 if (ctx == NULL) {
311 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_perl_ctx_t));
312 if (ctx == NULL) {
313 return NGX_ERROR;
314 }
315
316 ngx_http_set_ctx(r, ctx, ngx_http_perl_module);
317 }
318
319 pmcf = ngx_http_get_module_main_conf(r, ngx_http_perl_module);
320
321 value.data = NULL;
322
323 {
324
325 dTHXa(pmcf->perl);
326 PERL_SET_CONTEXT(pmcf->perl);
327 PERL_SET_INTERP(pmcf->perl);
328
329 rc = ngx_http_perl_call_handler(aTHX_ r, pmcf->nginx, pv->sub, NULL,
330 &pv->handler, &value);
331
332 }
333
334 if (value.data) {
335 v->len = value.len;
336 v->valid = 1;
337 v->no_cacheable = 0;
338 v->not_found = 0;
339 v->data = value.data;
340
341 } else {
342 v->not_found = 1;
343 }
344
345 ctx->filename.data = NULL;
346 ctx->redirect_uri.len = 0;
347
348 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
349 "perl variable done");
350
351 return rc;
352 }
353
354
355 #if (NGX_HTTP_SSI)
356
357 static ngx_int_t
ngx_http_perl_ssi(ngx_http_request_t * r,ngx_http_ssi_ctx_t * ssi_ctx,ngx_str_t ** params)358 ngx_http_perl_ssi(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ssi_ctx,
359 ngx_str_t **params)
360 {
361 SV *sv, **asv;
362 ngx_int_t rc;
363 ngx_str_t *handler, **args;
364 ngx_uint_t i;
365 ngx_http_perl_ctx_t *ctx;
366 ngx_http_perl_main_conf_t *pmcf;
367
368 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
369 "perl ssi handler");
370
371 ctx = ngx_http_get_module_ctx(r, ngx_http_perl_module);
372
373 if (ctx == NULL) {
374 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_perl_ctx_t));
375 if (ctx == NULL) {
376 return NGX_ERROR;
377 }
378
379 ngx_http_set_ctx(r, ctx, ngx_http_perl_module);
380 }
381
382 pmcf = ngx_http_get_module_main_conf(r, ngx_http_perl_module);
383
384 ctx->ssi = ssi_ctx;
385
386 handler = params[NGX_HTTP_PERL_SSI_SUB];
387 handler->data[handler->len] = '\0';
388
389 {
390
391 dTHXa(pmcf->perl);
392 PERL_SET_CONTEXT(pmcf->perl);
393 PERL_SET_INTERP(pmcf->perl);
394
395 #if 0
396
397 /* the code is disabled to force the precompiled perl code using only */
398
399 ngx_http_perl_eval_anon_sub(aTHX_ handler, &sv);
400
401 if (sv == &PL_sv_undef) {
402 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
403 "eval_pv(\"%V\") failed", handler);
404 return NGX_ERROR;
405 }
406
407 if (sv == NULL) {
408 sv = newSVpvn((char *) handler->data, handler->len);
409 }
410
411 #endif
412
413 sv = newSVpvn((char *) handler->data, handler->len);
414
415 args = ¶ms[NGX_HTTP_PERL_SSI_ARG];
416
417 if (args[0]) {
418
419 for (i = 0; args[i]; i++) { /* void */ }
420
421 asv = ngx_pcalloc(r->pool, (i + 1) * sizeof(SV *));
422
423 if (asv == NULL) {
424 SvREFCNT_dec(sv);
425 return NGX_ERROR;
426 }
427
428 asv[0] = (SV *) (uintptr_t) i;
429
430 for (i = 0; args[i]; i++) {
431 asv[i + 1] = newSVpvn((char *) args[i]->data, args[i]->len);
432 }
433
434 } else {
435 asv = NULL;
436 }
437
438 rc = ngx_http_perl_call_handler(aTHX_ r, pmcf->nginx, sv, asv, handler,
439 NULL);
440
441 SvREFCNT_dec(sv);
442
443 }
444
445 ctx->filename.data = NULL;
446 ctx->redirect_uri.len = 0;
447 ctx->ssi = NULL;
448
449 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "perl ssi done");
450
451 return rc;
452 }
453
454 #endif
455
456
457 static char *
ngx_http_perl_init_interpreter(ngx_conf_t * cf,ngx_http_perl_main_conf_t * pmcf)458 ngx_http_perl_init_interpreter(ngx_conf_t *cf, ngx_http_perl_main_conf_t *pmcf)
459 {
460 ngx_str_t *m;
461 ngx_uint_t i;
462 #if (NGX_HAVE_PERL_MULTIPLICITY)
463 ngx_pool_cleanup_t *cln;
464
465 cln = ngx_pool_cleanup_add(cf->pool, 0);
466 if (cln == NULL) {
467 return NGX_CONF_ERROR;
468 }
469
470 #endif
471
472 #ifdef NGX_PERL_MODULES
473 if (pmcf->modules == NGX_CONF_UNSET_PTR) {
474
475 pmcf->modules = ngx_array_create(cf->pool, 1, sizeof(ngx_str_t));
476 if (pmcf->modules == NULL) {
477 return NGX_CONF_ERROR;
478 }
479
480 m = ngx_array_push(pmcf->modules);
481 if (m == NULL) {
482 return NGX_CONF_ERROR;
483 }
484
485 ngx_str_set(m, NGX_PERL_MODULES);
486 }
487 #endif
488
489 if (pmcf->modules != NGX_CONF_UNSET_PTR) {
490 m = pmcf->modules->elts;
491 for (i = 0; i < pmcf->modules->nelts; i++) {
492 if (ngx_conf_full_name(cf->cycle, &m[i], 0) != NGX_OK) {
493 return NGX_CONF_ERROR;
494 }
495 }
496 }
497
498 #if !(NGX_HAVE_PERL_MULTIPLICITY)
499
500 if (perl) {
501
502 if (ngx_set_environment(cf->cycle, NULL) == NULL) {
503 return NGX_CONF_ERROR;
504 }
505
506 if (ngx_http_perl_run_requires(aTHX_ pmcf->requires, cf->log)
507 != NGX_OK)
508 {
509 return NGX_CONF_ERROR;
510 }
511
512 pmcf->perl = perl;
513 pmcf->nginx = nginx_stash;
514
515 return NGX_CONF_OK;
516 }
517
518 #endif
519
520 if (nginx_stash == NULL) {
521 PERL_SYS_INIT(&ngx_argc, &ngx_argv);
522 }
523
524 pmcf->perl = ngx_http_perl_create_interpreter(cf, pmcf);
525
526 if (pmcf->perl == NULL) {
527 return NGX_CONF_ERROR;
528 }
529
530 pmcf->nginx = nginx_stash;
531
532 #if (NGX_HAVE_PERL_MULTIPLICITY)
533
534 cln->handler = ngx_http_perl_cleanup_perl;
535 cln->data = pmcf->perl;
536
537 #else
538
539 perl = pmcf->perl;
540
541 #endif
542
543 return NGX_CONF_OK;
544 }
545
546
547 static PerlInterpreter *
ngx_http_perl_create_interpreter(ngx_conf_t * cf,ngx_http_perl_main_conf_t * pmcf)548 ngx_http_perl_create_interpreter(ngx_conf_t *cf,
549 ngx_http_perl_main_conf_t *pmcf)
550 {
551 int n;
552 STRLEN len;
553 SV *sv;
554 char *ver, **embedding;
555 ngx_str_t *m;
556 ngx_uint_t i;
557 PerlInterpreter *perl;
558
559 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, cf->log, 0, "create perl interpreter");
560
561 if (ngx_set_environment(cf->cycle, NULL) == NULL) {
562 return NULL;
563 }
564
565 perl = perl_alloc();
566 if (perl == NULL) {
567 ngx_log_error(NGX_LOG_ALERT, cf->log, 0, "perl_alloc() failed");
568 return NULL;
569 }
570
571 {
572
573 dTHXa(perl);
574 PERL_SET_CONTEXT(perl);
575 PERL_SET_INTERP(perl);
576
577 perl_construct(perl);
578
579 #ifdef PERL_EXIT_DESTRUCT_END
580 PL_exit_flags |= PERL_EXIT_DESTRUCT_END;
581 #endif
582
583 n = (pmcf->modules != NGX_CONF_UNSET_PTR) ? pmcf->modules->nelts * 2 : 0;
584
585 embedding = ngx_palloc(cf->pool, (5 + n) * sizeof(char *));
586 if (embedding == NULL) {
587 goto fail;
588 }
589
590 embedding[0] = "";
591
592 if (n++) {
593 m = pmcf->modules->elts;
594 for (i = 0; i < pmcf->modules->nelts; i++) {
595 embedding[2 * i + 1] = "-I";
596 embedding[2 * i + 2] = (char *) m[i].data;
597 }
598 }
599
600 embedding[n++] = "-Mnginx";
601 embedding[n++] = "-e";
602 embedding[n++] = "0";
603 embedding[n] = NULL;
604
605 n = perl_parse(perl, ngx_http_perl_xs_init, n, embedding, NULL);
606
607 if (n != 0) {
608 ngx_log_error(NGX_LOG_ALERT, cf->log, 0, "perl_parse() failed: %d", n);
609 goto fail;
610 }
611
612 sv = get_sv("nginx::VERSION", FALSE);
613 ver = SvPV(sv, len);
614
615 if (ngx_strcmp(ver, NGINX_VERSION) != 0) {
616 ngx_log_error(NGX_LOG_ALERT, cf->log, 0,
617 "version " NGINX_VERSION " of nginx.pm is required, "
618 "but %s was found", ver);
619 goto fail;
620 }
621
622 if (ngx_http_perl_run_requires(aTHX_ pmcf->requires, cf->log) != NGX_OK) {
623 goto fail;
624 }
625
626 }
627
628 return perl;
629
630 fail:
631
632 (void) perl_destruct(perl);
633
634 perl_free(perl);
635
636 return NULL;
637 }
638
639
640 static ngx_int_t
ngx_http_perl_run_requires(pTHX_ ngx_array_t * requires,ngx_log_t * log)641 ngx_http_perl_run_requires(pTHX_ ngx_array_t *requires, ngx_log_t *log)
642 {
643 u_char *err;
644 STRLEN len;
645 ngx_str_t *script;
646 ngx_uint_t i;
647
648 if (requires == NGX_CONF_UNSET_PTR) {
649 return NGX_OK;
650 }
651
652 script = requires->elts;
653 for (i = 0; i < requires->nelts; i++) {
654
655 require_pv((char *) script[i].data);
656
657 if (SvTRUE(ERRSV)) {
658
659 err = (u_char *) SvPV(ERRSV, len);
660 while (--len && (err[len] == CR || err[len] == LF)) { /* void */ }
661
662 ngx_log_error(NGX_LOG_EMERG, log, 0,
663 "require_pv(\"%s\") failed: \"%*s\"",
664 script[i].data, len + 1, err);
665
666 return NGX_ERROR;
667 }
668 }
669
670 return NGX_OK;
671 }
672
673
674 static ngx_int_t
ngx_http_perl_call_handler(pTHX_ ngx_http_request_t * r,HV * nginx,SV * sub,SV ** args,ngx_str_t * handler,ngx_str_t * rv)675 ngx_http_perl_call_handler(pTHX_ ngx_http_request_t *r, HV *nginx, SV *sub,
676 SV **args, ngx_str_t *handler, ngx_str_t *rv)
677 {
678 SV *sv;
679 int n, status;
680 char *line;
681 u_char *err;
682 STRLEN len, n_a;
683 ngx_uint_t i;
684 ngx_connection_t *c;
685
686 dSP;
687
688 status = 0;
689
690 ENTER;
691 SAVETMPS;
692
693 PUSHMARK(sp);
694
695 sv = sv_2mortal(sv_bless(newRV_noinc(newSViv(PTR2IV(r))), nginx));
696 XPUSHs(sv);
697
698 if (args) {
699 EXTEND(sp, (intptr_t) args[0]);
700
701 for (i = 1; i <= (uintptr_t) args[0]; i++) {
702 PUSHs(sv_2mortal(args[i]));
703 }
704 }
705
706 PUTBACK;
707
708 c = r->connection;
709
710 n = call_sv(sub, G_EVAL);
711
712 SPAGAIN;
713
714 if (n) {
715 if (rv == NULL) {
716 status = POPi;
717
718 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
719 "call_sv: %d", status);
720
721 } else {
722 line = SvPVx(POPs, n_a);
723 rv->len = n_a;
724
725 rv->data = ngx_pnalloc(r->pool, n_a);
726 if (rv->data == NULL) {
727 return NGX_ERROR;
728 }
729
730 ngx_memcpy(rv->data, line, n_a);
731 }
732 }
733
734 PUTBACK;
735
736 FREETMPS;
737 LEAVE;
738
739 /* check $@ */
740
741 if (SvTRUE(ERRSV)) {
742
743 err = (u_char *) SvPV(ERRSV, len);
744 while (--len && (err[len] == CR || err[len] == LF)) { /* void */ }
745
746 ngx_log_error(NGX_LOG_ERR, c->log, 0,
747 "call_sv(\"%V\") failed: \"%*s\"", handler, len + 1, err);
748
749 if (rv) {
750 return NGX_ERROR;
751 }
752
753 return NGX_HTTP_INTERNAL_SERVER_ERROR;
754 }
755
756 if (n != 1) {
757 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
758 "call_sv(\"%V\") returned %d results", handler, n);
759 status = NGX_OK;
760 }
761
762 if (rv) {
763 return NGX_OK;
764 }
765
766 return (ngx_int_t) status;
767 }
768
769
770 static void
ngx_http_perl_eval_anon_sub(pTHX_ ngx_str_t * handler,SV ** sv)771 ngx_http_perl_eval_anon_sub(pTHX_ ngx_str_t *handler, SV **sv)
772 {
773 u_char *p;
774
775 for (p = handler->data; *p; p++) {
776 if (*p != ' ' && *p != '\t' && *p != CR && *p != LF) {
777 break;
778 }
779 }
780
781 if (ngx_strncmp(p, "sub ", 4) == 0
782 || ngx_strncmp(p, "sub{", 4) == 0
783 || ngx_strncmp(p, "use ", 4) == 0)
784 {
785 *sv = eval_pv((char *) p, FALSE);
786
787 /* eval_pv() does not set ERRSV on failure */
788
789 return;
790 }
791
792 *sv = NULL;
793 }
794
795
796 static void *
ngx_http_perl_create_main_conf(ngx_conf_t * cf)797 ngx_http_perl_create_main_conf(ngx_conf_t *cf)
798 {
799 ngx_http_perl_main_conf_t *pmcf;
800
801 pmcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_perl_main_conf_t));
802 if (pmcf == NULL) {
803 return NULL;
804 }
805
806 pmcf->modules = NGX_CONF_UNSET_PTR;
807 pmcf->requires = NGX_CONF_UNSET_PTR;
808
809 return pmcf;
810 }
811
812
813 static char *
ngx_http_perl_init_main_conf(ngx_conf_t * cf,void * conf)814 ngx_http_perl_init_main_conf(ngx_conf_t *cf, void *conf)
815 {
816 ngx_http_perl_main_conf_t *pmcf = conf;
817
818 if (pmcf->perl == NULL) {
819 if (ngx_http_perl_init_interpreter(cf, pmcf) != NGX_CONF_OK) {
820 return NGX_CONF_ERROR;
821 }
822 }
823
824 return NGX_CONF_OK;
825 }
826
827
828 #if (NGX_HAVE_PERL_MULTIPLICITY)
829
830 static void
ngx_http_perl_cleanup_perl(void * data)831 ngx_http_perl_cleanup_perl(void *data)
832 {
833 PerlInterpreter *perl = data;
834
835 PERL_SET_CONTEXT(perl);
836 PERL_SET_INTERP(perl);
837
838 (void) perl_destruct(perl);
839
840 perl_free(perl);
841
842 if (ngx_perl_term) {
843 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ngx_cycle->log, 0, "perl term");
844
845 PERL_SYS_TERM();
846 }
847 }
848
849 #endif
850
851
852 static ngx_int_t
ngx_http_perl_preconfiguration(ngx_conf_t * cf)853 ngx_http_perl_preconfiguration(ngx_conf_t *cf)
854 {
855 #if (NGX_HTTP_SSI)
856 ngx_int_t rc;
857 ngx_http_ssi_main_conf_t *smcf;
858
859 smcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_ssi_filter_module);
860
861 rc = ngx_hash_add_key(&smcf->commands, &ngx_http_perl_ssi_command.name,
862 &ngx_http_perl_ssi_command, NGX_HASH_READONLY_KEY);
863
864 if (rc != NGX_OK) {
865 if (rc == NGX_BUSY) {
866 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
867 "conflicting SSI command \"%V\"",
868 &ngx_http_perl_ssi_command.name);
869 }
870
871 return NGX_ERROR;
872 }
873 #endif
874
875 return NGX_OK;
876 }
877
878
879 static void *
ngx_http_perl_create_loc_conf(ngx_conf_t * cf)880 ngx_http_perl_create_loc_conf(ngx_conf_t *cf)
881 {
882 ngx_http_perl_loc_conf_t *plcf;
883
884 plcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_perl_loc_conf_t));
885 if (plcf == NULL) {
886 return NULL;
887 }
888
889 /*
890 * set by ngx_pcalloc():
891 *
892 * plcf->handler = { 0, NULL };
893 */
894
895 return plcf;
896 }
897
898
899 static char *
ngx_http_perl_merge_loc_conf(ngx_conf_t * cf,void * parent,void * child)900 ngx_http_perl_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
901 {
902 ngx_http_perl_loc_conf_t *prev = parent;
903 ngx_http_perl_loc_conf_t *conf = child;
904
905 if (conf->sub == NULL) {
906 conf->sub = prev->sub;
907 conf->handler = prev->handler;
908 }
909
910 return NGX_CONF_OK;
911 }
912
913
914 static char *
ngx_http_perl(ngx_conf_t * cf,ngx_command_t * cmd,void * conf)915 ngx_http_perl(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
916 {
917 ngx_http_perl_loc_conf_t *plcf = conf;
918
919 ngx_str_t *value;
920 ngx_http_core_loc_conf_t *clcf;
921 ngx_http_perl_main_conf_t *pmcf;
922
923 value = cf->args->elts;
924
925 if (plcf->handler.data) {
926 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
927 "duplicate perl handler \"%V\"", &value[1]);
928 return NGX_CONF_ERROR;
929 }
930
931 pmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_perl_module);
932
933 if (pmcf->perl == NULL) {
934 if (ngx_http_perl_init_interpreter(cf, pmcf) != NGX_CONF_OK) {
935 return NGX_CONF_ERROR;
936 }
937 }
938
939 plcf->handler = value[1];
940
941 {
942
943 dTHXa(pmcf->perl);
944 PERL_SET_CONTEXT(pmcf->perl);
945 PERL_SET_INTERP(pmcf->perl);
946
947 ngx_http_perl_eval_anon_sub(aTHX_ &value[1], &plcf->sub);
948
949 if (plcf->sub == &PL_sv_undef) {
950 ngx_conf_log_error(NGX_LOG_ERR, cf, 0,
951 "eval_pv(\"%V\") failed", &value[1]);
952 return NGX_CONF_ERROR;
953 }
954
955 if (plcf->sub == NULL) {
956 plcf->sub = newSVpvn((char *) value[1].data, value[1].len);
957 }
958
959 }
960
961 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
962 clcf->handler = ngx_http_perl_handler;
963
964 return NGX_CONF_OK;
965 }
966
967
968 static char *
ngx_http_perl_set(ngx_conf_t * cf,ngx_command_t * cmd,void * conf)969 ngx_http_perl_set(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
970 {
971 ngx_int_t index;
972 ngx_str_t *value;
973 ngx_http_variable_t *v;
974 ngx_http_perl_variable_t *pv;
975 ngx_http_perl_main_conf_t *pmcf;
976
977 value = cf->args->elts;
978
979 if (value[1].data[0] != '$') {
980 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
981 "invalid variable name \"%V\"", &value[1]);
982 return NGX_CONF_ERROR;
983 }
984
985 value[1].len--;
986 value[1].data++;
987
988 v = ngx_http_add_variable(cf, &value[1], NGX_HTTP_VAR_CHANGEABLE);
989 if (v == NULL) {
990 return NGX_CONF_ERROR;
991 }
992
993 pv = ngx_palloc(cf->pool, sizeof(ngx_http_perl_variable_t));
994 if (pv == NULL) {
995 return NGX_CONF_ERROR;
996 }
997
998 index = ngx_http_get_variable_index(cf, &value[1]);
999 if (index == NGX_ERROR) {
1000 return NGX_CONF_ERROR;
1001 }
1002
1003 pmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_perl_module);
1004
1005 if (pmcf->perl == NULL) {
1006 if (ngx_http_perl_init_interpreter(cf, pmcf) != NGX_CONF_OK) {
1007 return NGX_CONF_ERROR;
1008 }
1009 }
1010
1011 pv->handler = value[2];
1012
1013 {
1014
1015 dTHXa(pmcf->perl);
1016 PERL_SET_CONTEXT(pmcf->perl);
1017 PERL_SET_INTERP(pmcf->perl);
1018
1019 ngx_http_perl_eval_anon_sub(aTHX_ &value[2], &pv->sub);
1020
1021 if (pv->sub == &PL_sv_undef) {
1022 ngx_conf_log_error(NGX_LOG_ERR, cf, 0,
1023 "eval_pv(\"%V\") failed", &value[2]);
1024 return NGX_CONF_ERROR;
1025 }
1026
1027 if (pv->sub == NULL) {
1028 pv->sub = newSVpvn((char *) value[2].data, value[2].len);
1029 }
1030
1031 }
1032
1033 v->get_handler = ngx_http_perl_variable;
1034 v->data = (uintptr_t) pv;
1035
1036 return NGX_CONF_OK;
1037 }
1038
1039
1040 static ngx_int_t
ngx_http_perl_init_worker(ngx_cycle_t * cycle)1041 ngx_http_perl_init_worker(ngx_cycle_t *cycle)
1042 {
1043 ngx_http_perl_main_conf_t *pmcf;
1044
1045 pmcf = ngx_http_cycle_get_module_main_conf(cycle, ngx_http_perl_module);
1046
1047 if (pmcf) {
1048 dTHXa(pmcf->perl);
1049 PERL_SET_CONTEXT(pmcf->perl);
1050 PERL_SET_INTERP(pmcf->perl);
1051
1052 /* set worker's $$ */
1053
1054 sv_setiv(GvSV(gv_fetchpv("$", TRUE, SVt_PV)), (I32) ngx_pid);
1055 }
1056
1057 return NGX_OK;
1058 }
1059
1060
1061 static void
ngx_http_perl_exit(ngx_cycle_t * cycle)1062 ngx_http_perl_exit(ngx_cycle_t *cycle)
1063 {
1064 #if (NGX_HAVE_PERL_MULTIPLICITY)
1065
1066 /*
1067 * the master exit hook is run before global pool cleanup,
1068 * therefore just set flag here
1069 */
1070
1071 ngx_perl_term = 1;
1072
1073 #else
1074
1075 if (nginx_stash) {
1076 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, cycle->log, 0, "perl term");
1077
1078 (void) perl_destruct(perl);
1079
1080 perl_free(perl);
1081
1082 PERL_SYS_TERM();
1083 }
1084
1085 #endif
1086 }
1087