3 * Copyright (C) Igor Sysoev
7 #include <ngx_config.h>
13 static ngx_int_t
ngx_http_send_error_page(ngx_http_request_t
*r
,
14 ngx_http_err_page_t
*err_page
);
15 static ngx_int_t
ngx_http_send_special_response(ngx_http_request_t
*r
,
16 ngx_http_core_loc_conf_t
*clcf
, ngx_uint_t err
);
17 static ngx_int_t
ngx_http_send_refresh(ngx_http_request_t
*r
);
20 static u_char ngx_http_error_full_tail
[] =
21 "<hr><center>" NGINX_VER
"</center>" CRLF
27 static u_char ngx_http_error_tail
[] =
28 "<hr><center>nginx</center>" CRLF
34 static u_char ngx_http_msie_stub
[] =
35 "<!-- The padding to disable MSIE's friendly error page -->" CRLF
36 "<!-- The padding to disable MSIE's friendly error page -->" CRLF
37 "<!-- The padding to disable MSIE's friendly error page -->" CRLF
38 "<!-- The padding to disable MSIE's friendly error page -->" CRLF
39 "<!-- The padding to disable MSIE's friendly error page -->" CRLF
40 "<!-- The padding to disable MSIE's friendly error page -->" CRLF
44 static u_char ngx_http_msie_refresh_head
[] =
45 "<html><head><meta http-equiv=\"Refresh\" content=\"0; URL=";
48 static u_char ngx_http_msie_refresh_tail
[] =
49 "\"></head><body></body></html>" CRLF
;
52 static char ngx_http_error_301_page
[] =
54 "<head><title>301 Moved Permanently</title></head>" CRLF
55 "<body bgcolor=\"white\">" CRLF
56 "<center><h1>301 Moved Permanently</h1></center>" CRLF
60 static char ngx_http_error_302_page
[] =
62 "<head><title>302 Found</title></head>" CRLF
63 "<body bgcolor=\"white\">" CRLF
64 "<center><h1>302 Found</h1></center>" CRLF
68 static char ngx_http_error_400_page
[] =
70 "<head><title>400 Bad Request</title></head>" CRLF
71 "<body bgcolor=\"white\">" CRLF
72 "<center><h1>400 Bad Request</h1></center>" CRLF
76 static char ngx_http_error_401_page
[] =
78 "<head><title>401 Authorization Required</title></head>" CRLF
79 "<body bgcolor=\"white\">" CRLF
80 "<center><h1>401 Authorization Required</h1></center>" CRLF
84 static char ngx_http_error_402_page
[] =
86 "<head><title>402 Payment Required</title></head>" CRLF
87 "<body bgcolor=\"white\">" CRLF
88 "<center><h1>402 Payment Required</h1></center>" CRLF
92 static char ngx_http_error_403_page
[] =
94 "<head><title>403 Forbidden</title></head>" CRLF
95 "<body bgcolor=\"white\">" CRLF
96 "<center><h1>403 Forbidden</h1></center>" CRLF
100 static char ngx_http_error_404_page
[] =
102 "<head><title>404 Not Found</title></head>" CRLF
103 "<body bgcolor=\"white\">" CRLF
104 "<center><h1>404 Not Found</h1></center>" CRLF
108 static char ngx_http_error_405_page
[] =
110 "<head><title>405 Not Allowed</title></head>" CRLF
111 "<body bgcolor=\"white\">" CRLF
112 "<center><h1>405 Not Allowed</h1></center>" CRLF
116 static char ngx_http_error_406_page
[] =
118 "<head><title>406 Not Acceptable</title></head>" CRLF
119 "<body bgcolor=\"white\">" CRLF
120 "<center><h1>406 Not Acceptable</h1></center>" CRLF
124 static char ngx_http_error_408_page
[] =
126 "<head><title>408 Request Time-out</title></head>" CRLF
127 "<body bgcolor=\"white\">" CRLF
128 "<center><h1>408 Request Time-out</h1></center>" CRLF
132 static char ngx_http_error_409_page
[] =
134 "<head><title>409 Conflict</title></head>" CRLF
135 "<body bgcolor=\"white\">" CRLF
136 "<center><h1>409 Conflict</h1></center>" CRLF
140 static char ngx_http_error_410_page
[] =
142 "<head><title>410 Gone</title></head>" CRLF
143 "<body bgcolor=\"white\">" CRLF
144 "<center><h1>410 Gone</h1></center>" CRLF
148 static char ngx_http_error_411_page
[] =
150 "<head><title>411 Length Required</title></head>" CRLF
151 "<body bgcolor=\"white\">" CRLF
152 "<center><h1>411 Length Required</h1></center>" CRLF
156 static char ngx_http_error_412_page
[] =
158 "<head><title>412 Precondition Failed</title></head>" CRLF
159 "<body bgcolor=\"white\">" CRLF
160 "<center><h1>412 Precondition Failed</h1></center>" CRLF
164 static char ngx_http_error_413_page
[] =
166 "<head><title>413 Request Entity Too Large</title></head>" CRLF
167 "<body bgcolor=\"white\">" CRLF
168 "<center><h1>413 Request Entity Too Large</h1></center>" CRLF
172 static char ngx_http_error_414_page
[] =
174 "<head><title>414 Request-URI Too Large</title></head>" CRLF
175 "<body bgcolor=\"white\">" CRLF
176 "<center><h1>414 Request-URI Too Large</h1></center>" CRLF
180 static char ngx_http_error_415_page
[] =
182 "<head><title>415 Unsupported Media Type</title></head>" CRLF
183 "<body bgcolor=\"white\">" CRLF
184 "<center><h1>415 Unsupported Media Type</h1></center>" CRLF
188 static char ngx_http_error_416_page
[] =
190 "<head><title>416 Requested Range Not Satisfiable</title></head>" CRLF
191 "<body bgcolor=\"white\">" CRLF
192 "<center><h1>416 Requested Range Not Satisfiable</h1></center>" CRLF
196 static char ngx_http_error_495_page
[] =
198 "<head><title>400 The SSL certificate error</title></head>"
200 "<body bgcolor=\"white\">" CRLF
201 "<center><h1>400 Bad Request</h1></center>" CRLF
202 "<center>The SSL certificate error</center>" CRLF
206 static char ngx_http_error_496_page
[] =
208 "<head><title>400 No required SSL certificate was sent</title></head>"
210 "<body bgcolor=\"white\">" CRLF
211 "<center><h1>400 Bad Request</h1></center>" CRLF
212 "<center>No required SSL certificate was sent</center>" CRLF
216 static char ngx_http_error_497_page
[] =
218 "<head><title>400 The plain HTTP request was sent to HTTPS port</title></head>"
220 "<body bgcolor=\"white\">" CRLF
221 "<center><h1>400 Bad Request</h1></center>" CRLF
222 "<center>The plain HTTP request was sent to HTTPS port</center>" CRLF
226 static char ngx_http_error_500_page
[] =
228 "<head><title>500 Internal Server Error</title></head>" CRLF
229 "<body bgcolor=\"white\">" CRLF
230 "<center><h1>500 Internal Server Error</h1></center>" CRLF
234 static char ngx_http_error_501_page
[] =
236 "<head><title>501 Method Not Implemented</title></head>" CRLF
237 "<body bgcolor=\"white\">" CRLF
238 "<center><h1>501 Method Not Implemented</h1></center>" CRLF
242 static char ngx_http_error_502_page
[] =
244 "<head><title>502 Bad Gateway</title></head>" CRLF
245 "<body bgcolor=\"white\">" CRLF
246 "<center><h1>502 Bad Gateway</h1></center>" CRLF
250 static char ngx_http_error_503_page
[] =
252 "<head><title>503 Service Temporarily Unavailable</title></head>" CRLF
253 "<body bgcolor=\"white\">" CRLF
254 "<center><h1>503 Service Temporarily Unavailable</h1></center>" CRLF
258 static char ngx_http_error_504_page
[] =
260 "<head><title>504 Gateway Time-out</title></head>" CRLF
261 "<body bgcolor=\"white\">" CRLF
262 "<center><h1>504 Gateway Time-out</h1></center>" CRLF
266 static char ngx_http_error_507_page
[] =
268 "<head><title>507 Insufficient Storage</title></head>" CRLF
269 "<body bgcolor=\"white\">" CRLF
270 "<center><h1>507 Insufficient Storage</h1></center>" CRLF
274 static ngx_str_t ngx_http_error_pages
[] = {
276 ngx_null_string
, /* 201, 204 */
278 #define NGX_HTTP_LAST_LEVEL_200 202
279 #define NGX_HTTP_LEVEL_200 (NGX_HTTP_LAST_LEVEL_200 - 201)
281 /* ngx_null_string, */ /* 300 */
282 ngx_string(ngx_http_error_301_page
),
283 ngx_string(ngx_http_error_302_page
),
284 ngx_null_string
, /* 303 */
286 #define NGX_HTTP_LAST_LEVEL_300 304
287 #define NGX_HTTP_LEVEL_300 (NGX_HTTP_LAST_LEVEL_300 - 301)
289 ngx_string(ngx_http_error_400_page
),
290 ngx_string(ngx_http_error_401_page
),
291 ngx_string(ngx_http_error_402_page
),
292 ngx_string(ngx_http_error_403_page
),
293 ngx_string(ngx_http_error_404_page
),
294 ngx_string(ngx_http_error_405_page
),
295 ngx_string(ngx_http_error_406_page
),
296 ngx_null_string
, /* 407 */
297 ngx_string(ngx_http_error_408_page
),
298 ngx_string(ngx_http_error_409_page
),
299 ngx_string(ngx_http_error_410_page
),
300 ngx_string(ngx_http_error_411_page
),
301 ngx_string(ngx_http_error_412_page
),
302 ngx_string(ngx_http_error_413_page
),
303 ngx_string(ngx_http_error_414_page
),
304 ngx_string(ngx_http_error_415_page
),
305 ngx_string(ngx_http_error_416_page
),
307 #define NGX_HTTP_LAST_LEVEL_400 417
308 #define NGX_HTTP_LEVEL_400 (NGX_HTTP_LAST_LEVEL_400 - 400)
310 ngx_string(ngx_http_error_495_page
), /* 495, https certificate error */
311 ngx_string(ngx_http_error_496_page
), /* 496, https no certificate */
312 ngx_string(ngx_http_error_497_page
), /* 497, http to https */
313 ngx_string(ngx_http_error_404_page
), /* 498, canceled */
314 ngx_null_string
, /* 499, client has closed connection */
316 ngx_string(ngx_http_error_500_page
),
317 ngx_string(ngx_http_error_501_page
),
318 ngx_string(ngx_http_error_502_page
),
319 ngx_string(ngx_http_error_503_page
),
320 ngx_string(ngx_http_error_504_page
),
321 ngx_null_string
, /* 505 */
322 ngx_null_string
, /* 506 */
323 ngx_string(ngx_http_error_507_page
)
325 #define NGX_HTTP_LAST_LEVEL_500 508
330 static ngx_str_t ngx_http_get_name
= { 3, (u_char
*) "GET " };
334 ngx_http_special_response_handler(ngx_http_request_t
*r
, ngx_int_t error
)
337 ngx_http_err_page_t
*err_page
;
338 ngx_http_core_loc_conf_t
*clcf
;
340 ngx_log_debug3(NGX_LOG_DEBUG_HTTP
, r
->connection
->log
, 0,
341 "http special response: %d, \"%V?%V\"",
342 error
, &r
->uri
, &r
->args
);
344 r
->err_status
= error
;
348 case NGX_HTTP_BAD_REQUEST
:
349 case NGX_HTTP_REQUEST_ENTITY_TOO_LARGE
:
350 case NGX_HTTP_REQUEST_URI_TOO_LARGE
:
351 case NGX_HTTP_TO_HTTPS
:
352 case NGX_HTTPS_CERT_ERROR
:
353 case NGX_HTTPS_NO_CERT
:
354 case NGX_HTTP_INTERNAL_SERVER_ERROR
:
359 if (r
->lingering_close
== 1) {
361 case NGX_HTTP_BAD_REQUEST
:
362 case NGX_HTTP_TO_HTTPS
:
363 case NGX_HTTPS_CERT_ERROR
:
364 case NGX_HTTPS_NO_CERT
:
365 r
->lingering_close
= 0;
369 r
->headers_out
.content_type
.len
= 0;
371 clcf
= ngx_http_get_module_loc_conf(r
, ngx_http_core_module
);
373 if (!r
->error_page
&& clcf
->error_pages
&& r
->uri_changes
!= 0) {
375 if (clcf
->recursive_error_pages
== 0) {
379 err_page
= clcf
->error_pages
->elts
;
381 for (i
= 0; i
< clcf
->error_pages
->nelts
; i
++) {
382 if (err_page
[i
].status
== error
) {
383 return ngx_http_send_error_page(r
, &err_page
[i
]);
388 r
->expect_tested
= 1;
390 if (ngx_http_discard_request_body(r
) != NGX_OK
) {
391 error
= NGX_HTTP_INTERNAL_SERVER_ERROR
;
394 if (clcf
->msie_refresh
395 && r
->headers_in
.msie
396 && (error
== NGX_HTTP_MOVED_PERMANENTLY
397 || error
== NGX_HTTP_MOVED_TEMPORARILY
))
399 return ngx_http_send_refresh(r
);
402 if (error
== NGX_HTTP_CREATED
) {
407 } else if (error
== NGX_HTTP_NO_CONTENT
) {
411 } else if (error
>= NGX_HTTP_MOVED_PERMANENTLY
412 && error
< NGX_HTTP_LAST_LEVEL_300
)
415 err
= error
- NGX_HTTP_MOVED_PERMANENTLY
+ NGX_HTTP_LEVEL_200
;
417 } else if (error
>= NGX_HTTP_BAD_REQUEST
418 && error
< NGX_HTTP_LAST_LEVEL_400
)
421 err
= error
- NGX_HTTP_BAD_REQUEST
+ NGX_HTTP_LEVEL_200
422 + NGX_HTTP_LEVEL_300
;
424 } else if (error
>= NGX_HTTP_OWN_CODES
425 && error
< NGX_HTTP_LAST_LEVEL_500
)
428 err
= error
- NGX_HTTP_OWN_CODES
+ NGX_HTTP_LEVEL_200
430 + NGX_HTTP_LEVEL_400
;
432 case NGX_HTTP_TO_HTTPS
:
433 case NGX_HTTPS_CERT_ERROR
:
434 case NGX_HTTPS_NO_CERT
:
435 r
->err_status
= NGX_HTTP_BAD_REQUEST
;
440 /* unknown code, zero body */
444 return ngx_http_send_special_response(r
, clcf
, err
);
449 ngx_http_filter_finalize_request(ngx_http_request_t
*r
, ngx_module_t
*m
,
455 ngx_http_clean_header(r
);
460 ctx
= r
->ctx
[m
->ctx_index
];
463 /* clear the modules contexts */
464 ngx_memzero(r
->ctx
, sizeof(void *) * ngx_http_max_module
);
467 r
->ctx
[m
->ctx_index
] = ctx
;
470 r
->filter_finalize
= 1;
472 rc
= ngx_http_special_response_handler(r
, error
);
474 /* NGX_ERROR resets any pending data */
489 ngx_http_clean_header(ngx_http_request_t
*r
)
491 ngx_memzero(&r
->headers_out
.status
,
492 sizeof(ngx_http_headers_out_t
)
493 - offsetof(ngx_http_headers_out_t
, status
));
495 r
->headers_out
.headers
.part
.nelts
= 0;
496 r
->headers_out
.headers
.part
.next
= NULL
;
497 r
->headers_out
.headers
.last
= &r
->headers_out
.headers
.part
;
499 r
->headers_out
.content_length_n
= -1;
500 r
->headers_out
.last_modified_time
= -1;
505 ngx_http_send_error_page(ngx_http_request_t
*r
, ngx_http_err_page_t
*err_page
)
509 ngx_table_elt_t
*location
;
510 ngx_http_core_loc_conf_t
*clcf
;
512 overwrite
= err_page
->overwrite
;
514 if (overwrite
&& overwrite
!= NGX_HTTP_OK
) {
515 r
->expect_tested
= 1;
518 r
->err_status
= overwrite
;
522 if (ngx_http_complex_value(r
, &err_page
->value
, &uri
) != NGX_OK
) {
526 if (uri
.data
[0] == '/') {
528 if (err_page
->value
.lengths
) {
529 ngx_http_split_args(r
, &uri
, &args
);
532 args
= err_page
->args
;
535 if (r
->method
!= NGX_HTTP_HEAD
) {
536 r
->method
= NGX_HTTP_GET
;
537 r
->method_name
= ngx_http_get_name
;
540 return ngx_http_internal_redirect(r
, &uri
, &args
);
543 if (uri
.data
[0] == '@') {
544 return ngx_http_named_location(r
, &uri
);
547 location
= ngx_list_push(&r
->headers_out
.headers
);
549 if (location
== NULL
) {
553 r
->err_status
= NGX_HTTP_MOVED_TEMPORARILY
;
556 location
->key
.len
= sizeof("Location") - 1;
557 location
->key
.data
= (u_char
*) "Location";
558 location
->value
= uri
;
560 r
->headers_out
.location
= location
;
562 clcf
= ngx_http_get_module_loc_conf(r
, ngx_http_core_module
);
564 if (clcf
->msie_refresh
&& r
->headers_in
.msie
) {
565 return ngx_http_send_refresh(r
);
568 return ngx_http_send_special_response(r
, clcf
, NGX_HTTP_MOVED_TEMPORARILY
569 - NGX_HTTP_MOVED_PERMANENTLY
570 + NGX_HTTP_LEVEL_200
);
575 ngx_http_send_special_response(ngx_http_request_t
*r
,
576 ngx_http_core_loc_conf_t
*clcf
, ngx_uint_t err
)
582 ngx_uint_t msie_padding
;
585 if (clcf
->server_tokens
) {
586 len
= sizeof(ngx_http_error_full_tail
) - 1;
587 tail
= ngx_http_error_full_tail
;
590 len
= sizeof(ngx_http_error_tail
) - 1;
591 tail
= ngx_http_error_tail
;
597 if (ngx_http_error_pages
[err
].len
) {
598 r
->headers_out
.content_length_n
= ngx_http_error_pages
[err
].len
600 if (clcf
->msie_padding
601 && r
->headers_in
.msie
602 && r
->http_version
>= NGX_HTTP_VERSION_10
603 && err
>= NGX_HTTP_LEVEL_300
)
605 r
->headers_out
.content_length_n
+=
606 sizeof(ngx_http_msie_stub
) - 1;
610 r
->headers_out
.content_type_len
= sizeof("text/html") - 1;
611 r
->headers_out
.content_type
.len
= sizeof("text/html") - 1;
612 r
->headers_out
.content_type
.data
= (u_char
*) "text/html";
613 r
->headers_out
.content_type_lowcase
= NULL
;
616 r
->headers_out
.content_length_n
= -1;
620 r
->headers_out
.content_length_n
= 0;
624 if (r
->headers_out
.content_length
) {
625 r
->headers_out
.content_length
->hash
= 0;
626 r
->headers_out
.content_length
= NULL
;
629 ngx_http_clear_accept_ranges(r
);
630 ngx_http_clear_last_modified(r
);
632 rc
= ngx_http_send_header(r
);
634 if (rc
== NGX_ERROR
|| r
->header_only
) {
638 if (ngx_http_error_pages
[err
].len
== 0) {
642 b
= ngx_calloc_buf(r
->pool
);
648 b
->pos
= ngx_http_error_pages
[err
].data
;
649 b
->last
= ngx_http_error_pages
[err
].data
+ ngx_http_error_pages
[err
].len
;
652 out
[0].next
= &out
[1];
654 b
= ngx_calloc_buf(r
->pool
);
662 b
->last
= tail
+ len
;
668 b
= ngx_calloc_buf(r
->pool
);
674 b
->pos
= ngx_http_msie_stub
;
675 b
->last
= ngx_http_msie_stub
+ sizeof(ngx_http_msie_stub
) - 1;
677 out
[1].next
= &out
[2];
686 b
->last_in_chain
= 1;
688 return ngx_http_output_filter(r
, &out
[0]);
693 ngx_http_send_refresh(ngx_http_request_t
*r
)
695 u_char
*p
, *location
;
702 len
= r
->headers_out
.location
->value
.len
;
703 location
= r
->headers_out
.location
->value
.data
;
705 escape
= 2 * ngx_escape_uri(NULL
, location
, len
, NGX_ESCAPE_REFRESH
);
707 size
= sizeof(ngx_http_msie_refresh_head
) - 1
709 + sizeof(ngx_http_msie_refresh_tail
) - 1;
711 r
->err_status
= NGX_HTTP_OK
;
713 r
->headers_out
.content_type_len
= sizeof("text/html") - 1;
714 r
->headers_out
.content_type
.len
= sizeof("text/html") - 1;
715 r
->headers_out
.content_type
.data
= (u_char
*) "text/html";
716 r
->headers_out
.content_type_lowcase
= NULL
;
718 r
->headers_out
.location
->hash
= 0;
719 r
->headers_out
.location
= NULL
;
721 r
->headers_out
.content_length_n
= size
;
723 if (r
->headers_out
.content_length
) {
724 r
->headers_out
.content_length
->hash
= 0;
725 r
->headers_out
.content_length
= NULL
;
728 ngx_http_clear_accept_ranges(r
);
729 ngx_http_clear_last_modified(r
);
731 rc
= ngx_http_send_header(r
);
733 if (rc
== NGX_ERROR
|| r
->header_only
) {
737 b
= ngx_create_temp_buf(r
->pool
, size
);
742 p
= ngx_cpymem(b
->pos
, ngx_http_msie_refresh_head
,
743 sizeof(ngx_http_msie_refresh_head
) - 1);
746 p
= ngx_cpymem(p
, location
, len
);
749 p
= (u_char
*) ngx_escape_uri(p
, location
, len
, NGX_ESCAPE_REFRESH
);
752 b
->last
= ngx_cpymem(p
, ngx_http_msie_refresh_tail
,
753 sizeof(ngx_http_msie_refresh_tail
) - 1);
756 b
->last_in_chain
= 1;
761 return ngx_http_output_filter(r
, &out
);