| |
| #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_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 ngx_str_t error_pages[] = { |
| { 0, NULL}, /* 301 */ |
| { 0, NULL}, /* 302 */ |
| { 0, NULL}, /* 303 */ |
| { 0, NULL}, /* 304 */ |
| |
| { sizeof(error_400_page) - 1, error_400_page }, |
| { 0, NULL}, /* 401 */ |
| { 0, NULL}, /* 402 */ |
| { sizeof(error_403_page) - 1, error_403_page }, |
| { sizeof(error_404_page) - 1, error_404_page }, |
| { 0, NULL}, /* 405 */ |
| { 0, NULL}, /* 406 */ |
| { 0, NULL}, /* 407 */ |
| { 0, NULL}, /* 408 */ |
| { 0, NULL}, /* 409 */ |
| { 0, NULL}, /* 410 */ |
| { 0, NULL}, /* 411 */ |
| { 0, NULL}, /* 412 */ |
| { 0, NULL}, /* 413 */ |
| { sizeof(error_414_page) - 1, error_414_page }, |
| { 0, NULL}, /* 415 */ |
| { 0, NULL}, /* 416 */ |
| |
| { sizeof(error_500_page) - 1, error_500_page } |
| }; |
| |
| |
| int ngx_http_special_response(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 + 4; |
| |
| } else { |
| err = error - NGX_HTTP_INTERNAL_SERVER_ERROR + 4 + 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); |
| } |
