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ngx_http_special_response.c
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/*
* Copyright (C) Igor Sysoev
* Copyright (C) Nginx, Inc.
*/
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_http.h>
#include <nginx.h>
static ngx_int_t ngx_http_send_error_page(ngx_http_request_t *r,
ngx_http_err_page_t *err_page);
static ngx_int_t ngx_http_send_special_response(ngx_http_request_t *r,
ngx_http_core_loc_conf_t *clcf, ngx_uint_t err);
static ngx_int_t ngx_http_send_refresh(ngx_http_request_t *r);
#if (T_NGX_SERVER_INFO)
static ngx_buf_t *ngx_http_set_server_info(ngx_http_request_t *r);
#endif
#if (!T_NGX_SERVER_INFO)
static u_char ngx_http_error_full_tail[] =
"<hr><center>" NGINX_VER "</center>" CRLF
"</body>" CRLF
"</html>" CRLF
;
static u_char ngx_http_error_build_tail[] =
"<hr><center>" NGINX_VER_BUILD "</center>" CRLF
"</body>" CRLF
"</html>" CRLF
;
#endif
#if (T_NGX_SERVER_INFO)
static u_char ngx_http_error_doctype[] =
"<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\">" CRLF;
static u_char ngx_http_server_info_head[] =
" Sorry for the inconvenience.<br/>" CRLF
"Please report this message and include the following information to us.<br/>"
CRLF
"Thank you very much!</p>" CRLF
"<table>" CRLF
"<tr>" CRLF
"<td>URL:</td>" CRLF
"<td>"
;
static u_char ngx_http_server_info_server[] =
"</td>" CRLF
"</tr>" CRLF
"<tr>" CRLF
"<td>Server:</td>" CRLF
"<td>"
;
static u_char ngx_http_server_info_admin[] =
"</td>" CRLF
"</tr>" CRLF
"<tr>" CRLF
"<td>Admin:</td>" CRLF
"<td>"
;
static u_char ngx_http_server_info_date[] =
"</td>" CRLF
"</tr>" CRLF
"<tr>" CRLF
"<td>Date:</td>" CRLF
"<td>"
;
static u_char ngx_http_server_info_tail[] =
"</td>" CRLF
"</tr>" CRLF
"</table>" CRLF
;
static u_char ngx_http_error_banner[] =
"<hr/>Powered by " TENGINE;
static u_char ngx_http_error_full_banner[] =
"<hr/>Powered by " TENGINE_VER_BUILD;
static u_char ngx_http_error_powered_by[] =
"<hr/>Powered by ";
#endif
static u_char ngx_http_error_tail[] =
#if (T_NGX_SERVER_INFO)
"<hr><center>tengine</center>" CRLF
#else
"<hr><center>nginx</center>" CRLF
#endif
"</body>" CRLF
"</html>" CRLF
;
static u_char ngx_http_msie_padding[] =
"<!-- a padding to disable MSIE and Chrome friendly error page -->" CRLF
"<!-- a padding to disable MSIE and Chrome friendly error page -->" CRLF
"<!-- a padding to disable MSIE and Chrome friendly error page -->" CRLF
"<!-- a padding to disable MSIE and Chrome friendly error page -->" CRLF
"<!-- a padding to disable MSIE and Chrome friendly error page -->" CRLF
"<!-- a padding to disable MSIE and Chrome friendly error page -->" CRLF
;
static u_char ngx_http_msie_refresh_head[] =
"<html><head><meta http-equiv=\"Refresh\" content=\"0; URL=";
static u_char ngx_http_msie_refresh_tail[] =
"\"></head><body></body></html>" CRLF;
static char ngx_http_error_301_page[] =
"<html>" CRLF
"<head><title>301 Moved Permanently</title></head>" CRLF
"<body>" CRLF
"<center><h1>301 Moved Permanently</h1></center>" CRLF
;
static char ngx_http_error_302_page[] =
"<html>" CRLF
"<head><title>302 Found</title></head>" CRLF
"<body>" CRLF
"<center><h1>302 Found</h1></center>" CRLF
;
static char ngx_http_error_303_page[] =
"<html>" CRLF
"<head><title>303 See Other</title></head>" CRLF
"<body>" CRLF
"<center><h1>303 See Other</h1></center>" CRLF
;
static char ngx_http_error_307_page[] =
"<html>" CRLF
"<head><title>307 Temporary Redirect</title></head>" CRLF
"<body>" CRLF
"<center><h1>307 Temporary Redirect</h1></center>" CRLF
;
static char ngx_http_error_308_page[] =
"<html>" CRLF
"<head><title>308 Permanent Redirect</title></head>" CRLF
"<body>" CRLF
"<center><h1>308 Permanent Redirect</h1></center>" CRLF
;
static char ngx_http_error_400_page[] =
"<html>" CRLF
"<head><title>400 Bad Request</title></head>" CRLF
"<body>" CRLF
"<center><h1>400 Bad Request</h1></center>" CRLF
;
static char ngx_http_error_401_page[] =
"<html>" CRLF
"<head><title>401 Authorization Required</title></head>" CRLF
"<body>" CRLF
"<center><h1>401 Authorization Required</h1></center>" CRLF
;
static char ngx_http_error_402_page[] =
"<html>" CRLF
"<head><title>402 Payment Required</title></head>" CRLF
"<body>" CRLF
"<center><h1>402 Payment Required</h1></center>" CRLF
;
static char ngx_http_error_403_page[] =
"<html>" CRLF
"<head><title>403 Forbidden</title></head>" CRLF
"<body>" CRLF
"<center><h1>403 Forbidden</h1></center>" CRLF
;
static char ngx_http_error_404_page[] =
"<html>" CRLF
"<head><title>404 Not Found</title></head>" CRLF
"<body>" CRLF
"<center><h1>404 Not Found</h1></center>" CRLF
;
static char ngx_http_error_405_page[] =
"<html>" CRLF
"<head><title>405 Not Allowed</title></head>" CRLF
"<body>" CRLF
"<center><h1>405 Not Allowed</h1></center>" CRLF
;
static char ngx_http_error_406_page[] =
"<html>" CRLF
"<head><title>406 Not Acceptable</title></head>" CRLF
"<body>" CRLF
"<center><h1>406 Not Acceptable</h1></center>" CRLF
;
static char ngx_http_error_408_page[] =
"<html>" CRLF
"<head><title>408 Request Time-out</title></head>" CRLF
"<body>" CRLF
"<center><h1>408 Request Time-out</h1></center>" CRLF
;
static char ngx_http_error_409_page[] =
"<html>" CRLF
"<head><title>409 Conflict</title></head>" CRLF
"<body>" CRLF
"<center><h1>409 Conflict</h1></center>" CRLF
;
static char ngx_http_error_410_page[] =
"<html>" CRLF
"<head><title>410 Gone</title></head>" CRLF
"<body>" CRLF
"<center><h1>410 Gone</h1></center>" CRLF
;
static char ngx_http_error_411_page[] =
"<html>" CRLF
"<head><title>411 Length Required</title></head>" CRLF
"<body>" CRLF
"<center><h1>411 Length Required</h1></center>" CRLF
;
static char ngx_http_error_412_page[] =
"<html>" CRLF
"<head><title>412 Precondition Failed</title></head>" CRLF
"<body>" CRLF
"<center><h1>412 Precondition Failed</h1></center>" CRLF
;
static char ngx_http_error_413_page[] =
"<html>" CRLF
"<head><title>413 Request Entity Too Large</title></head>" CRLF
"<body>" CRLF
"<center><h1>413 Request Entity Too Large</h1></center>" CRLF
;
static char ngx_http_error_414_page[] =
"<html>" CRLF
"<head><title>414 Request-URI Too Large</title></head>" CRLF
"<body>" CRLF
"<center><h1>414 Request-URI Too Large</h1></center>" CRLF
;
static char ngx_http_error_415_page[] =
"<html>" CRLF
"<head><title>415 Unsupported Media Type</title></head>" CRLF
"<body>" CRLF
"<center><h1>415 Unsupported Media Type</h1></center>" CRLF
;
static char ngx_http_error_416_page[] =
"<html>" CRLF
"<head><title>416 Requested Range Not Satisfiable</title></head>" CRLF
"<body>" CRLF
"<center><h1>416 Requested Range Not Satisfiable</h1></center>" CRLF
;
static char ngx_http_error_421_page[] =
"<html>" CRLF
"<head><title>421 Misdirected Request</title></head>" CRLF
"<body>" CRLF
"<center><h1>421 Misdirected Request</h1></center>" CRLF
;
static char ngx_http_error_429_page[] =
"<html>" CRLF
"<head><title>429 Too Many Requests</title></head>" CRLF
"<body>" CRLF
"<center><h1>429 Too Many Requests</h1></center>" CRLF
;
static char ngx_http_error_494_page[] =
"<html>" CRLF
"<head><title>400 Request Header Or Cookie Too Large</title></head>"
CRLF
"<body>" CRLF
"<center><h1>400 Bad Request</h1></center>" CRLF
"<center>Request Header Or Cookie Too Large</center>" CRLF
;
static char ngx_http_error_495_page[] =
"<html>" CRLF
"<head><title>400 The SSL certificate error</title></head>"
CRLF
"<body>" CRLF
"<center><h1>400 Bad Request</h1></center>" CRLF
"<center>The SSL certificate error</center>" CRLF
;
static char ngx_http_error_496_page[] =
"<html>" CRLF
"<head><title>400 No required SSL certificate was sent</title></head>"
CRLF
"<body>" CRLF
"<center><h1>400 Bad Request</h1></center>" CRLF
"<center>No required SSL certificate was sent</center>" CRLF
;
static char ngx_http_error_497_page[] =
"<html>" CRLF
"<head><title>400 The plain HTTP request was sent to HTTPS port</title></head>"
CRLF
"<body>" CRLF
"<center><h1>400 Bad Request</h1></center>" CRLF
"<center>The plain HTTP request was sent to HTTPS port</center>" CRLF
;
static char ngx_http_error_500_page[] =
"<html>" CRLF
"<head><title>500 Internal Server Error</title></head>" CRLF
"<body>" CRLF
"<center><h1>500 Internal Server Error</h1></center>" CRLF
;
static char ngx_http_error_501_page[] =
"<html>" CRLF
"<head><title>501 Not Implemented</title></head>" CRLF
"<body>" CRLF
"<center><h1>501 Not Implemented</h1></center>" CRLF
;
static char ngx_http_error_502_page[] =
"<html>" CRLF
"<head><title>502 Bad Gateway</title></head>" CRLF
"<body>" CRLF
"<center><h1>502 Bad Gateway</h1></center>" CRLF
;
static char ngx_http_error_503_page[] =
"<html>" CRLF
"<head><title>503 Service Temporarily Unavailable</title></head>" CRLF
"<body>" CRLF
"<center><h1>503 Service Temporarily Unavailable</h1></center>" CRLF
;
static char ngx_http_error_504_page[] =
"<html>" CRLF
"<head><title>504 Gateway Time-out</title></head>" CRLF
"<body>" CRLF
"<center><h1>504 Gateway Time-out</h1></center>" CRLF
;
static char ngx_http_error_505_page[] =
"<html>" CRLF
"<head><title>505 HTTP Version Not Supported</title></head>" CRLF
"<body>" CRLF
"<center><h1>505 HTTP Version Not Supported</h1></center>" CRLF
;
static char ngx_http_error_507_page[] =
"<html>" CRLF
"<head><title>507 Insufficient Storage</title></head>" CRLF
"<body>" CRLF
"<center><h1>507 Insufficient Storage</h1></center>" CRLF
;
static ngx_str_t ngx_http_error_pages[] = {
ngx_null_string, /* 201, 204 */
#define NGX_HTTP_LAST_2XX 202
#define NGX_HTTP_OFF_3XX (NGX_HTTP_LAST_2XX - 201)
/* ngx_null_string, */ /* 300 */
ngx_string(ngx_http_error_301_page),
ngx_string(ngx_http_error_302_page),
ngx_string(ngx_http_error_303_page),
ngx_null_string, /* 304 */
ngx_null_string, /* 305 */
ngx_null_string, /* 306 */
ngx_string(ngx_http_error_307_page),
ngx_string(ngx_http_error_308_page),
#define NGX_HTTP_LAST_3XX 309
#define NGX_HTTP_OFF_4XX (NGX_HTTP_LAST_3XX - 301 + NGX_HTTP_OFF_3XX)
ngx_string(ngx_http_error_400_page),
ngx_string(ngx_http_error_401_page),
ngx_string(ngx_http_error_402_page),
ngx_string(ngx_http_error_403_page),
ngx_string(ngx_http_error_404_page),
ngx_string(ngx_http_error_405_page),
ngx_string(ngx_http_error_406_page),
ngx_null_string, /* 407 */
ngx_string(ngx_http_error_408_page),
ngx_string(ngx_http_error_409_page),
ngx_string(ngx_http_error_410_page),
ngx_string(ngx_http_error_411_page),
ngx_string(ngx_http_error_412_page),
ngx_string(ngx_http_error_413_page),
ngx_string(ngx_http_error_414_page),
ngx_string(ngx_http_error_415_page),
ngx_string(ngx_http_error_416_page),
ngx_null_string, /* 417 */
ngx_null_string, /* 418 */
ngx_null_string, /* 419 */
ngx_null_string, /* 420 */
ngx_string(ngx_http_error_421_page),
ngx_null_string, /* 422 */
ngx_null_string, /* 423 */
ngx_null_string, /* 424 */
ngx_null_string, /* 425 */
ngx_null_string, /* 426 */
ngx_null_string, /* 427 */
ngx_null_string, /* 428 */
ngx_string(ngx_http_error_429_page),
#define NGX_HTTP_LAST_4XX 430
#define NGX_HTTP_OFF_5XX (NGX_HTTP_LAST_4XX - 400 + NGX_HTTP_OFF_4XX)
ngx_string(ngx_http_error_494_page), /* 494, request header too large */
ngx_string(ngx_http_error_495_page), /* 495, https certificate error */
ngx_string(ngx_http_error_496_page), /* 496, https no certificate */
ngx_string(ngx_http_error_497_page), /* 497, http to https */
ngx_string(ngx_http_error_404_page), /* 498, canceled */
ngx_null_string, /* 499, client has closed connection */
ngx_string(ngx_http_error_500_page),
ngx_string(ngx_http_error_501_page),
ngx_string(ngx_http_error_502_page),
ngx_string(ngx_http_error_503_page),
ngx_string(ngx_http_error_504_page),
ngx_string(ngx_http_error_505_page),
ngx_null_string, /* 506 */
ngx_string(ngx_http_error_507_page)
#define NGX_HTTP_LAST_5XX 508
};
ngx_int_t
ngx_http_special_response_handler(ngx_http_request_t *r, ngx_int_t error)
{
ngx_uint_t i, err;
ngx_http_err_page_t *err_page;
ngx_http_core_loc_conf_t *clcf;
ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http special response: %i, \"%V?%V\"",
error, &r->uri, &r->args);
r->err_status = error;
if (r->keepalive) {
switch (error) {
case NGX_HTTP_BAD_REQUEST:
case NGX_HTTP_REQUEST_ENTITY_TOO_LARGE:
case NGX_HTTP_REQUEST_URI_TOO_LARGE:
case NGX_HTTP_TO_HTTPS:
case NGX_HTTPS_CERT_ERROR:
case NGX_HTTPS_NO_CERT:
case NGX_HTTP_INTERNAL_SERVER_ERROR:
case NGX_HTTP_NOT_IMPLEMENTED:
r->keepalive = 0;
}
}
if (r->lingering_close) {
switch (error) {
case NGX_HTTP_BAD_REQUEST:
case NGX_HTTP_TO_HTTPS:
case NGX_HTTPS_CERT_ERROR:
case NGX_HTTPS_NO_CERT:
r->lingering_close = 0;
}
}
r->headers_out.content_type.len = 0;
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
if (!r->error_page && clcf->error_pages && r->uri_changes != 0) {
if (clcf->recursive_error_pages == 0) {
r->error_page = 1;
}
err_page = clcf->error_pages->elts;
for (i = 0; i < clcf->error_pages->nelts; i++) {
if (err_page[i].status == error) {
return ngx_http_send_error_page(r, &err_page[i]);
}
}
}
r->expect_tested = 1;
if (ngx_http_discard_request_body(r) != NGX_OK) {
r->keepalive = 0;
}
if (clcf->msie_refresh
&& r->headers_in.msie
&& (error == NGX_HTTP_MOVED_PERMANENTLY
|| error == NGX_HTTP_MOVED_TEMPORARILY))
{
return ngx_http_send_refresh(r);
}
if (error == NGX_HTTP_CREATED) {
/* 201 */
err = 0;
} else if (error == NGX_HTTP_NO_CONTENT) {
/* 204 */
err = 0;
} else if (error >= NGX_HTTP_MOVED_PERMANENTLY
&& error < NGX_HTTP_LAST_3XX)
{
/* 3XX */
err = error - NGX_HTTP_MOVED_PERMANENTLY + NGX_HTTP_OFF_3XX;
} else if (error >= NGX_HTTP_BAD_REQUEST
&& error < NGX_HTTP_LAST_4XX)
{
/* 4XX */
err = error - NGX_HTTP_BAD_REQUEST + NGX_HTTP_OFF_4XX;
} else if (error >= NGX_HTTP_NGINX_CODES
&& error < NGX_HTTP_LAST_5XX)
{
/* 49X, 5XX */
err = error - NGX_HTTP_NGINX_CODES + NGX_HTTP_OFF_5XX;
switch (error) {
case NGX_HTTP_TO_HTTPS:
case NGX_HTTPS_CERT_ERROR:
case NGX_HTTPS_NO_CERT:
case NGX_HTTP_REQUEST_HEADER_TOO_LARGE:
r->err_status = NGX_HTTP_BAD_REQUEST;
}
} else {
/* unknown code, zero body */
err = 0;
}
return ngx_http_send_special_response(r, clcf, err);
}
ngx_int_t
ngx_http_filter_finalize_request(ngx_http_request_t *r, ngx_module_t *m,
ngx_int_t error)
{
void *ctx;
ngx_int_t rc;
ngx_http_clean_header(r);
ctx = NULL;
if (m) {
ctx = r->ctx[m->ctx_index];
}
/* clear the modules contexts */
ngx_memzero(r->ctx, sizeof(void *) * ngx_http_max_module);
if (m) {
r->ctx[m->ctx_index] = ctx;
}
r->filter_finalize = 1;
rc = ngx_http_special_response_handler(r, error);
/* NGX_ERROR resets any pending data */
switch (rc) {
case NGX_OK:
case NGX_DONE:
return NGX_ERROR;
default:
return rc;
}
}
void
ngx_http_clean_header(ngx_http_request_t *r)
{
ngx_memzero(&r->headers_out.status,
sizeof(ngx_http_headers_out_t)
- offsetof(ngx_http_headers_out_t, status));
r->headers_out.headers.part.nelts = 0;
r->headers_out.headers.part.next = NULL;
r->headers_out.headers.last = &r->headers_out.headers.part;
r->headers_out.content_length_n = -1;
r->headers_out.last_modified_time = -1;
}
static ngx_int_t
ngx_http_send_error_page(ngx_http_request_t *r, ngx_http_err_page_t *err_page)
{
ngx_int_t overwrite;
ngx_str_t uri, args;
ngx_table_elt_t *location;
ngx_http_core_loc_conf_t *clcf;
overwrite = err_page->overwrite;
if (overwrite && overwrite != NGX_HTTP_OK) {
r->expect_tested = 1;
}
if (overwrite >= 0) {
r->err_status = overwrite;
}
if (ngx_http_complex_value(r, &err_page->value, &uri) != NGX_OK) {
return NGX_ERROR;
}
if (uri.len && uri.data[0] == '/') {
if (err_page->value.lengths) {
ngx_http_split_args(r, &uri, &args);
} else {
args = err_page->args;
}
if (r->method != NGX_HTTP_HEAD) {
r->method = NGX_HTTP_GET;
r->method_name = ngx_http_core_get_method;
}
return ngx_http_internal_redirect(r, &uri, &args);
}
if (uri.len && uri.data[0] == '@') {
return ngx_http_named_location(r, &uri);
}
r->expect_tested = 1;
if (ngx_http_discard_request_body(r) != NGX_OK) {
r->keepalive = 0;
}
location = ngx_list_push(&r->headers_out.headers);
if (location == NULL) {
return NGX_ERROR;
}
if (overwrite != NGX_HTTP_MOVED_PERMANENTLY
&& overwrite != NGX_HTTP_MOVED_TEMPORARILY
&& overwrite != NGX_HTTP_SEE_OTHER
&& overwrite != NGX_HTTP_TEMPORARY_REDIRECT
&& overwrite != NGX_HTTP_PERMANENT_REDIRECT)
{
r->err_status = NGX_HTTP_MOVED_TEMPORARILY;
}
location->hash = 1;
ngx_str_set(&location->key, "Location");
location->value = uri;
ngx_http_clear_location(r);
r->headers_out.location = location;
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
if (clcf->msie_refresh && r->headers_in.msie) {
return ngx_http_send_refresh(r);
}
return ngx_http_send_special_response(r, clcf, r->err_status
- NGX_HTTP_MOVED_PERMANENTLY
+ NGX_HTTP_OFF_3XX);
}
static ngx_int_t
ngx_http_send_special_response(ngx_http_request_t *r,
ngx_http_core_loc_conf_t *clcf, ngx_uint_t err)
{
#if (!T_NGX_SERVER_INFO)
u_char *tail;
size_t len;
#endif
ngx_int_t rc;
ngx_buf_t *b;
ngx_uint_t msie_padding;
#if (T_NGX_SERVER_INFO)
ngx_chain_t out[7];
ngx_buf_t *ib;
ngx_uint_t i;
#else
ngx_chain_t out[3];
#endif
#if (T_NGX_SERVER_INFO)
if (clcf->server_info && err >= NGX_HTTP_OFF_4XX) {
ib = ngx_http_set_server_info(r);
if (ib == NULL) {
return NGX_ERROR;
}
} else {
ib = NULL;
}
#else
if (clcf->server_tokens == NGX_HTTP_SERVER_TOKENS_ON) {
len = sizeof(ngx_http_error_full_tail) - 1;
tail = ngx_http_error_full_tail;
} else if (clcf->server_tokens == NGX_HTTP_SERVER_TOKENS_BUILD) {
len = sizeof(ngx_http_error_build_tail) - 1;
tail = ngx_http_error_build_tail;
} else {
len = sizeof(ngx_http_error_tail) - 1;
tail = ngx_http_error_tail;
}
#endif
msie_padding = 0;
if (ngx_http_error_pages[err].len) {
#if (T_NGX_SERVER_INFO)
r->headers_out.content_length_n = sizeof(ngx_http_error_doctype) - 1
+ ngx_http_error_pages[err].len
+ (ib ? (ib->last - ib->pos) : 0)
+ sizeof(ngx_http_error_tail) - 1;
if (clcf->server_tag_type == NGX_HTTP_SERVER_TAG_ON) {
r->headers_out.content_length_n += clcf->server_tokens
? sizeof(ngx_http_error_full_banner) - 1
: sizeof(ngx_http_error_banner) - 1;
} else if (clcf->server_tag_type == NGX_HTTP_SERVER_TAG_CUSTOMIZED) {
r->headers_out.content_length_n += sizeof(ngx_http_error_powered_by)
- 1;
r->headers_out.content_length_n += clcf->server_tag.len;
}
#else
r->headers_out.content_length_n = ngx_http_error_pages[err].len + len;
#endif
if (clcf->msie_padding
&& (r->headers_in.msie || r->headers_in.chrome)
&& r->http_version >= NGX_HTTP_VERSION_10
&& err >= NGX_HTTP_OFF_4XX)
{
r->headers_out.content_length_n +=
sizeof(ngx_http_msie_padding) - 1;
msie_padding = 1;
}
r->headers_out.content_type_len = sizeof("text/html") - 1;
ngx_str_set(&r->headers_out.content_type, "text/html");
r->headers_out.content_type_lowcase = NULL;
} else {
r->headers_out.content_length_n = 0;
}
if (r->headers_out.content_length) {
r->headers_out.content_length->hash = 0;
r->headers_out.content_length = NULL;
}
ngx_http_clear_accept_ranges(r);
ngx_http_clear_last_modified(r);
ngx_http_clear_etag(r);
rc = ngx_http_send_header(r);
if (rc == NGX_ERROR || r->header_only) {
return rc;
}
if (ngx_http_error_pages[err].len == 0) {
return ngx_http_send_special(r, NGX_HTTP_LAST);
}
#if (T_NGX_SERVER_INFO)
i = 0;
b = ngx_calloc_buf(r->pool);
if (b == NULL) {
return NGX_ERROR;
}
b->memory = 1;
b->pos = ngx_http_error_doctype;
b->last = ngx_http_error_doctype + sizeof(ngx_http_error_doctype) - 1;
out[i].buf = b;
out[i].next = &out[i + 1];
i++;
#endif
b = ngx_calloc_buf(r->pool);
if (b == NULL) {
return NGX_ERROR;
}
b->memory = 1;
b->pos = ngx_http_error_pages[err].data;
b->last = ngx_http_error_pages[err].data + ngx_http_error_pages[err].len;
#if (T_NGX_SERVER_INFO)
out[i].buf = b;
out[i].next = &out[i + 1];
i++;
if (ib) {
out[i].buf = ib;
out[i].next = &out[i + 1];
i++;
}
if (clcf->server_tag_type == NGX_HTTP_SERVER_TAG_ON) {
b = ngx_calloc_buf(r->pool);
if (b == NULL) {
return NGX_ERROR;
}
b->memory = 1;
if (clcf->server_tokens) {
b->pos = ngx_http_error_full_banner;
b->last = ngx_http_error_full_banner
+ sizeof(ngx_http_error_full_banner) - 1;
} else {
b->pos = ngx_http_error_banner;
b->last = ngx_http_error_banner + sizeof(ngx_http_error_banner) - 1;
}
out[i].buf = b;
out[i].next = &out[i + 1];
i++;
} else if (clcf->server_tag_type == NGX_HTTP_SERVER_TAG_CUSTOMIZED) {
b = ngx_calloc_buf(r->pool);
if (b == NULL) {
return NGX_ERROR;
}
b->memory = 1;
b->pos = ngx_http_error_powered_by;
b->last = ngx_http_error_powered_by
+ sizeof(ngx_http_error_powered_by) - 1;
out[i].buf = b;
out[i].next = &out[i + 1];
i++;
b = ngx_calloc_buf(r->pool);
if (b == NULL) {
return NGX_ERROR;
}
b->memory = 1;
b->pos = clcf->server_tag.data;
b->last = clcf->server_tag.data + clcf->server_tag.len;
out[i].buf = b;
out[i].next = &out[i + 1];
i++;
}
#else
out[0].buf = b;
out[0].next = &out[1];
#endif
b = ngx_calloc_buf(r->pool);
if (b == NULL) {
return NGX_ERROR;
}
b->memory = 1;
#if (T_NGX_SERVER_INFO)
b->pos = ngx_http_error_tail;
b->last = ngx_http_error_tail + sizeof(ngx_http_error_tail) - 1;
out[i].buf = b;
out[i].next = NULL;
#else
b->pos = tail;
b->last = tail + len;
out[1].buf = b;
out[1].next = NULL;
#endif
if (msie_padding) {
b = ngx_calloc_buf(r->pool);
if (b == NULL) {
return NGX_ERROR;
}
b->memory = 1;
b->pos = ngx_http_msie_padding;
b->last = ngx_http_msie_padding + sizeof(ngx_http_msie_padding) - 1;
#if (T_NGX_SERVER_INFO)
out[i].next = &out[i + 1];
i++;
out[i].buf = b;
out[i].next = NULL;
#else
out[1].next = &out[2];
out[2].buf = b;
out[2].next = NULL;
#endif
}
if (r == r->main) {
b->last_buf = 1;
}
b->last_in_chain = 1;
return ngx_http_output_filter(r, &out[0]);
}
static ngx_int_t
ngx_http_send_refresh(ngx_http_request_t *r)
{
u_char *p, *location;
size_t len, size;
uintptr_t escape;
ngx_int_t rc;
ngx_buf_t *b;
ngx_chain_t out;