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#include <nginx.h>
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_string.h>
#include <ngx_http.h>
#include <ngx_http_output_filter.h>
static char error_tail[] =
"<hr><center>" NGINX_VER "</center>" CRLF
"</body>" CRLF
"</html>" CRLF
;
static char error_400_page[] =
"<html>" CRLF
"<head><title>400 Bad Request</title></head>" CRLF
"<body bgcolor=\"white\">" CRLF
"<center><h1>400 Bad Request</h1></center>" CRLF
;
static char error_403_page[] =
"<html>" CRLF
"<head><title>403 Forbidden</title></head>" CRLF
"<body bgcolor=\"white\">" CRLF
"<center><h1>403 Forbidden</h1></center>" CRLF
;
static char error_404_page[] =
"<html>" CRLF
"<head><title>404 Not Found</title></head>" CRLF
"<body bgcolor=\"white\">" CRLF
"<center><h1>404 Not Found</h1></center>" CRLF
;
static char error_408_page[] =
"<html>" CRLF
"<head><title>408 Request Time-out</title></head>" CRLF
"<body bgcolor=\"white\">" CRLF
"<center><h1>408 Request Time-out</h1></center>" CRLF
;
static char error_414_page[] =
"<html>" CRLF
"<head><title>414 Request-URI Too Large</title></head>" CRLF
"<body bgcolor=\"white\">" CRLF
"<center><h1>414 Request-URI Too Large</h1></center>" CRLF
;
static char error_500_page[] =
"<html>" CRLF
"<head><title>500 Internal Server Error</title></head>" CRLF
"<body bgcolor=\"white\">" CRLF
"<center><h1>500 Internal Server Error</h1></center>" CRLF
;
static char error_502_page[] =
"<html>" CRLF
"<head><title>502 Bad Gateway</title></head>" CRLF
"<body bgcolor=\"white\">" CRLF
"<center><h1>502 Bad Gateway</h1></center>" CRLF
;
static char error_504_page[] =
"<html>" CRLF
"<head><title>504 Gateway Time-out</title></head>" CRLF
"<body bgcolor=\"white\">" CRLF
"<center><h1>504 Gateway Time-out</h1></center>" CRLF
;
static ngx_str_t error_pages[] = {
ngx_null_string, /* 301 */
ngx_null_string, /* 302 */
ngx_null_string, /* 303 */
ngx_string(error_400_page),
ngx_null_string, /* 401 */
ngx_null_string, /* 402 */
ngx_string(error_403_page),
ngx_string(error_404_page),
ngx_null_string, /* 405 */
ngx_null_string, /* 406 */
ngx_null_string, /* 407 */
ngx_string(error_408_page),
ngx_null_string, /* 409 */
ngx_null_string, /* 410 */
ngx_null_string, /* 411 */
ngx_null_string, /* 412 */
ngx_null_string, /* 413 */
ngx_string(error_414_page),
ngx_null_string, /* 415 */
ngx_null_string, /* 416 */
ngx_string(error_500_page),
ngx_null_string, /* 501 */
ngx_string(error_502_page),
ngx_null_string, /* 503 */
ngx_string(error_504_page)
};
int ngx_http_special_response_handler(ngx_http_request_t *r, int error)
{
int err, len;
ngx_hunk_t *message, *tail;
len = 0;
r->headers_out.status = error;
if (error < NGX_HTTP_BAD_REQUEST) {
err = error - NGX_HTTP_MOVED_PERMANENTLY;
} else if (error < NGX_HTTP_INTERNAL_SERVER_ERROR) {
err = error - NGX_HTTP_BAD_REQUEST + 3;
} else {
err = error - NGX_HTTP_INTERNAL_SERVER_ERROR + 3 + 17;
}
if (r->keepalive != 0) {
switch (error) {
case NGX_HTTP_BAD_REQUEST:
case NGX_HTTP_REQUEST_URI_TOO_LARGE:
case NGX_HTTP_INTERNAL_SERVER_ERROR:
r->keepalive = 0;
}
}
if (error_pages[err].len == 0) {
r->headers_out.content_length = -1;
} else {
r->headers_out.content_length = error_pages[err].len
+ len + sizeof(error_tail);
}
if (ngx_http_send_header(r) == NGX_ERROR) {
return NGX_ERROR;
}
if (error_pages[err].len == 0) {
return NGX_OK;
}
ngx_test_null(message, ngx_pcalloc(r->pool, sizeof(ngx_hunk_t)), NGX_ERROR);
message->type = NGX_HUNK_MEMORY|NGX_HUNK_IN_MEMORY;
message->pos = error_pages[err].data;
message->last = error_pages[err].data + error_pages[err].len;
if (ngx_http_output_filter(r, message) == NGX_ERROR) {
return NGX_ERROR;
}
ngx_test_null(tail, ngx_pcalloc(r->pool, sizeof(ngx_hunk_t)), NGX_ERROR);
tail->type = NGX_HUNK_MEMORY|NGX_HUNK_LAST|NGX_HUNK_IN_MEMORY;
tail->pos = error_tail;
tail->last = error_tail + sizeof(error_tail);
return ngx_http_output_filter(r, tail);
}
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