Mercurial > hg > nginx-vendor-current
diff src/http/ngx_http_special_response.c @ 0:f0b350454894 NGINX_0_1_0
nginx 0.1.0
*) The first public version.
| author | Igor Sysoev <http://sysoev.ru> |
|---|---|
| date | Mon, 04 Oct 2004 00:00:00 +0400 |
| parents | |
| children | 45fe5b98a9de |
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new file mode 100644 --- /dev/null +++ b/src/http/ngx_http_special_response.c @@ -0,0 +1,358 @@ + +/* + * Copyright (C) Igor Sysoev + */ + + +#include <ngx_config.h> +#include <ngx_core.h> +#include <ngx_http.h> +#include <nginx.h> + + +static u_char error_tail[] = +"<hr><center>" NGINX_VER "</center>" CRLF +"</body>" CRLF +"</html>" CRLF +; + + +static u_char msie_stub[] = +"<!-- The padding to disable MSIE's friendly error page -->" CRLF +"<!-- The padding to disable MSIE's friendly error page -->" CRLF +"<!-- The padding to disable MSIE's friendly error page -->" CRLF +"<!-- The padding to disable MSIE's friendly error page -->" CRLF +"<!-- The padding to disable MSIE's friendly error page -->" CRLF +"<!-- The padding to disable MSIE's friendly error page -->" CRLF +; + + +static char error_301_page[] = +"<html>" CRLF +"<head><title>301 Moved Permanently</title></head>" CRLF +"<body bgcolor=\"white\">" CRLF +"<center><h1>301 Moved Permanently</h1></center>" CRLF +; + + +static char error_302_page[] = +"<html>" CRLF +"<head><title>302 Found</title></head>" CRLF +"<body bgcolor=\"white\">" CRLF +"<center><h1>302 Found</h1></center>" 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_405_page[] = +"<html>" CRLF +"<head><title>405 Not Allowed</title></head>" CRLF +"<body bgcolor=\"white\">" CRLF +"<center><h1>405 Not Allowed</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_413_page[] = +"<html>" CRLF +"<head><title>413 Request Entity Too Large</title></head>" CRLF +"<body bgcolor=\"white\">" CRLF +"<center><h1>413 Request Entity Too Large</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_416_page[] = +"<html>" CRLF +"<head><title>416 Requested Range Not Satisfiable</title></head>" CRLF +"<body bgcolor=\"white\">" CRLF +"<center><h1>416 Requested Range Not Satisfiable</h1></center>" CRLF +; + + +static char error_497_page[] = +"<html>" CRLF +"<head><title>400 The plain HTTP request was sent to HTTPS port</title></head>" +CRLF +"<body bgcolor=\"white\">" CRLF +"<center><h1>400 Bad Request</h1></center>" CRLF +"<center>The plain HTTP request was sent to HTTPS port</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_501_page[] = +"<html>" CRLF +"<head><title>501 Method Not Implemented</title></head>" CRLF +"<body bgcolor=\"white\">" CRLF +"<center><h1>500 Method Not Implemented</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_503_page[] = +"<html>" CRLF +"<head><title>503 Service Temporarily Unavailable</title></head>" CRLF +"<body bgcolor=\"white\">" CRLF +"<center><h1>503 Service Temporarily Unavailable</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, */ /* 300 */ + ngx_string(error_301_page), + ngx_string(error_302_page), + 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_string(error_405_page), + 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_string(error_413_page), + ngx_string(error_414_page), + ngx_null_string, /* 415 */ + ngx_string(error_416_page), + + ngx_string(error_497_page), /* 497, http to https */ + ngx_string(error_404_page), /* 498, invalid host name */ + ngx_null_string, /* 499, client closed connection */ + + ngx_string(error_500_page), + ngx_string(error_501_page), + ngx_string(error_502_page), + ngx_string(error_503_page), + ngx_string(error_504_page) +}; + + +ngx_int_t ngx_http_special_response_handler(ngx_http_request_t *r, int error) +{ + ngx_int_t rc; + ngx_uint_t err, i, msie_padding; + ngx_buf_t *b; + ngx_chain_t *out, **ll, *cl; + ngx_http_err_page_t *err_page; + ngx_http_core_loc_conf_t *clcf; + + rc = ngx_http_discard_body(r); + + if (rc == NGX_HTTP_INTERNAL_SERVER_ERROR) { + error = NGX_HTTP_INTERNAL_SERVER_ERROR; + } + + r->headers_out.status = error; + + if (r->keepalive != 0) { + 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_HTTP_INTERNAL_SERVER_ERROR: + r->keepalive = 0; + } + } + + if (r->lingering_close == 1) { + switch (error) { + case NGX_HTTP_BAD_REQUEST: + case NGX_HTTP_TO_HTTPS: + r->lingering_close = 0; + } + } + + clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); + + if (r->err_ctx == NULL && clcf->error_pages) { + err_page = clcf->error_pages->elts; + for (i = 0; i < clcf->error_pages->nelts; i++) { + if (err_page[i].status == error) { + if (err_page[i].overwrite) { + r->err_status = err_page[i].overwrite; + } else { + r->err_status = error; + } + r->err_ctx = r->ctx; + return ngx_http_internal_redirect(r, &err_page[i].uri, NULL); + } + } + } + + if (error < NGX_HTTP_BAD_REQUEST) { + /* 3XX */ + err = error - NGX_HTTP_MOVED_PERMANENTLY; + + } else if (error < NGX_HTTP_NGX_CODES) { + /* 4XX */ + err = error - NGX_HTTP_BAD_REQUEST + 3; + + } else { + /* 49X, 5XX */ + err = error - NGX_HTTP_NGX_CODES + 3 + 17; + + switch (error) { + case NGX_HTTP_TO_HTTPS: + r->headers_out.status = NGX_HTTP_BAD_REQUEST; + error = NGX_HTTP_BAD_REQUEST; + break; + + case NGX_HTTP_INVALID_HOST: + r->headers_out.status = NGX_HTTP_NOT_FOUND; + error = NGX_HTTP_NOT_FOUND; + break; + } + } + + msie_padding = 0; + + if (error_pages[err].len) { + r->headers_out.content_length_n = error_pages[err].len + + sizeof(error_tail) - 1; + + if (clcf->msie_padding + && r->headers_in.msie + && r->http_version >= NGX_HTTP_VERSION_10 + && error >= NGX_HTTP_BAD_REQUEST + && error != NGX_HTTP_REQUEST_URI_TOO_LARGE) + { + r->headers_out.content_length_n += sizeof(msie_stub) - 1; + msie_padding = 1; + } + + r->headers_out.content_type = ngx_list_push(&r->headers_out.headers); + if (r->headers_out.content_type == NULL) { + return NGX_ERROR; + } + + r->headers_out.content_type->key.len = sizeof("Content-Type") - 1; + r->headers_out.content_type->key.data = (u_char *) "Content-Type"; + r->headers_out.content_type->value.len = sizeof("text/html") - 1; + r->headers_out.content_type->value.data = (u_char *) "text/html"; + + } else { + r->headers_out.content_length_n = -1; + } + + if (r->headers_out.content_length) { + r->headers_out.content_length->key.len = 0; + r->headers_out.content_length = NULL; + } + + rc = ngx_http_send_header(r); + + if (rc == NGX_ERROR || r->header_only) { + return rc; + } + + if (error_pages[err].len == 0) { + return NGX_OK; + } + + out = NULL; + ll = NULL; + + if (!(b = ngx_calloc_buf(r->pool))) { + return NGX_ERROR; + } + b->memory = 1; + b->pos = error_pages[err].data; + b->last = error_pages[err].data + error_pages[err].len; + + ngx_alloc_link_and_set_buf(cl, b, r->pool, NGX_ERROR); + ngx_chain_add_link(out, ll, cl); + + + if (!(b = ngx_calloc_buf(r->pool))) { + return NGX_ERROR; + } + b->memory = 1; + b->pos = error_tail; + b->last = error_tail + sizeof(error_tail) - 1; + + ngx_alloc_link_and_set_buf(cl, b, r->pool, NGX_ERROR); + ngx_chain_add_link(out, ll, cl); + + if (msie_padding) { + if (!(b = ngx_calloc_buf(r->pool))) { + return NGX_ERROR; + } + b->memory = 1; + b->pos = msie_stub; + b->last = msie_stub + sizeof(msie_stub) - 1; + + ngx_alloc_link_and_set_buf(cl, b, r->pool, NGX_ERROR); + ngx_chain_add_link(out, ll, cl); + } + + b->last_buf = 1; + + return ngx_http_output_filter(r, out); +}