Mercurial > hg > nginx-ranges
diff src/http/ngx_http_special_response.c-C @ 230:38e7b94d63ac NGINX_0_4_0
nginx 0.4.0
*) Change in internal API: the HTTP modules initialization was moved
from the init module phase to the HTTP postconfiguration phase.
*) Change: now the request body is not read beforehand for the
ngx_http_perl_module: it's required to start the reading using the
$r->has_request_body method.
*) Feature: the ngx_http_perl_module supports the DECLINED return code.
*) Feature: the ngx_http_dav_module supports the incoming "Date" header
line for the PUT method.
*) Feature: the "ssi" directive is available inside the "if" block.
*) Bugfix: a segmentation fault occurred if there was an "index"
directive with variables and the first index name was without
variables; bug appeared in 0.1.29.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Wed, 30 Aug 2006 00:00:00 +0400 |
parents | |
children |
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new file mode 100644 --- /dev/null +++ b/src/http/ngx_http_special_response.c-C @@ -0,0 +1,548 @@ + +/* + * 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 ngx_http_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_401_page[] = +"<html>" CRLF +"<head><title>401 Authorization Required</title></head>" CRLF +"<body bgcolor=\"white\">" CRLF +"<center><h1>401 Authorization Required</h1></center>" CRLF +; + + +static char error_402_page[] = +"<html>" CRLF +"<head><title>402 Payment Required</title></head>" CRLF +"<body bgcolor=\"white\">" CRLF +"<center><h1>402 Payment Required</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_406_page[] = +"<html>" CRLF +"<head><title>406 Not Acceptable</title></head>" CRLF +"<body bgcolor=\"white\">" CRLF +"<center><h1>406 Not Acceptable</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_409_page[] = +"<html>" CRLF +"<head><title>409 Conflict</title></head>" CRLF +"<body bgcolor=\"white\">" CRLF +"<center><h1>409 Conflict</h1></center>" CRLF +; + + +static char error_410_page[] = +"<html>" CRLF +"<head><title>410 Gone</title></head>" CRLF +"<body bgcolor=\"white\">" CRLF +"<center><h1>410 Gone</h1></center>" CRLF +; + + +static char error_411_page[] = +"<html>" CRLF +"<head><title>411 Length Required</title></head>" CRLF +"<body bgcolor=\"white\">" CRLF +"<center><h1>411 Length Required</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_415_page[] = +"<html>" CRLF +"<head><title>415 Unsupported Media Type</title></head>" CRLF +"<body bgcolor=\"white\">" CRLF +"<center><h1>415 Unsupported Media Type</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_495_page[] = +"<html>" CRLF +"<head><title>400 The SSL certificate error</title></head>" +CRLF +"<body bgcolor=\"white\">" CRLF +"<center><h1>400 Bad Request</h1></center>" CRLF +"<center>The SSL certificate error</center>" CRLF +; + + +static char error_496_page[] = +"<html>" CRLF +"<head><title>400 No required SSL certificate was sent</title></head>" +CRLF +"<body bgcolor=\"white\">" CRLF +"<center><h1>400 Bad Request</h1></center>" CRLF +"<center>No required SSL certificate was sent</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>501 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 char error_507_page[] = +"<html>" CRLF +"<head><title>507 Insufficient Storage</title></head>" CRLF +"<body bgcolor=\"white\">" CRLF +"<center><h1>507 Insufficient Storage</h1></center>" CRLF +; + + +static ngx_str_t error_pages[] = { + + ngx_null_string, /* 201, 204 */ + +#define NGX_HTTP_LEVEL_200 1 + + /* ngx_null_string, */ /* 300 */ + ngx_string(error_301_page), + ngx_string(error_302_page), + ngx_null_string, /* 303 */ + +#define NGX_HTTP_LEVEL_300 3 + + ngx_string(error_400_page), + ngx_string(error_401_page), + ngx_string(error_402_page), + ngx_string(error_403_page), + ngx_string(error_404_page), + ngx_string(error_405_page), + ngx_string(error_406_page), + ngx_null_string, /* 407 */ + ngx_string(error_408_page), + ngx_string(error_409_page), + ngx_string(error_410_page), + ngx_string(error_411_page), + ngx_null_string, /* 412 */ + ngx_string(error_413_page), + ngx_string(error_414_page), + ngx_string(error_415_page), + ngx_string(error_416_page), + +#define NGX_HTTP_LEVEL_400 17 + + ngx_string(error_495_page), /* 495, https certificate error */ + ngx_string(error_496_page), /* 496, https no certificate */ + ngx_string(error_497_page), /* 497, http to https */ + ngx_string(error_404_page), /* 498, invalid host name */ + ngx_null_string, /* 499, client had 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_null_string, /* 505 */ + ngx_null_string, /* 506 */ + ngx_string(error_507_page) +}; + + +ngx_int_t +ngx_http_special_response_handler(ngx_http_request_t *r, ngx_int_t error) +{ + ngx_int_t rc; + ngx_buf_t *b; + ngx_str_t *uri; + ngx_uint_t i, n, err, msie_padding; + ngx_chain_t *out, *cl; + ngx_http_err_page_t *err_page; + ngx_http_core_loc_conf_t *clcf; + + ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, + "http special response: %d, \"%V\"", error, &r->uri); + + rc = ngx_http_discard_body(r); + + if (rc == NGX_HTTP_INTERNAL_SERVER_ERROR) { + error = NGX_HTTP_INTERNAL_SERVER_ERROR; + } + + r->headers_out.status = error; + r->err_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_HTTPS_CERT_ERROR: + case NGX_HTTPS_NO_CERT: + 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: + 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) { + + 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) { + r->err_status = err_page[i].overwrite; + + r->method = NGX_HTTP_GET; + + uri = &err_page[i].uri; + + if (err_page[i].uri_lengths) { + if (ngx_http_script_run(r, uri, + err_page[i].uri_lengths->elts, 0, + err_page[i].uri_values->elts) + == NULL) + { + return NGX_ERROR; + } + + if (r->zero_in_uri) { + for (n = 0; n < uri->len; n++) { + if (uri->data[n] == '\0') { + goto zero; + } + } + + r->zero_in_uri = 0; + } + + } else { + r->zero_in_uri = 0; + } + + zero: + + if (uri->data[0] == '/') { + return ngx_http_internal_redirect(r, uri, NULL); + } + + r->headers_out.location = + ngx_list_push(&r->headers_out.headers); + + if (r->headers_out.location) { + error = NGX_HTTP_MOVED_TEMPORARILY; + + r->err_status = NGX_HTTP_MOVED_TEMPORARILY; + + r->headers_out.location->hash = 1; + r->headers_out.location->key.len = sizeof("Location") - 1; + r->headers_out.location->key.data = (u_char *) "Location"; + r->headers_out.location->value = *uri; + + } else { + return NGX_ERROR; + } + } + } + } + + if (error == NGX_HTTP_CREATED) { + /* 201 */ + err = 0; + r->header_only = 1; + + } else if (error == NGX_HTTP_NO_CONTENT) { + /* 204 */ + err = 0; + + } else if (error < NGX_HTTP_BAD_REQUEST) { + /* 3XX */ + err = error - NGX_HTTP_MOVED_PERMANENTLY + NGX_HTTP_LEVEL_200; + + } else if (error < NGX_HTTP_OWN_CODES) { + /* 4XX */ + err = error - NGX_HTTP_BAD_REQUEST + NGX_HTTP_LEVEL_200 + + NGX_HTTP_LEVEL_300; + + } else { + /* 49X, 5XX */ + err = error - NGX_HTTP_OWN_CODES + NGX_HTTP_LEVEL_200 + + NGX_HTTP_LEVEL_300 + + NGX_HTTP_LEVEL_400; + switch (error) { + case NGX_HTTP_TO_HTTPS: + case NGX_HTTPS_CERT_ERROR: + case NGX_HTTPS_NO_CERT: + r->headers_out.status = NGX_HTTP_BAD_REQUEST; + error = NGX_HTTP_BAD_REQUEST; + 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(ngx_http_msie_stub) - 1; + msie_padding = 1; + } + + r->headers_out.content_type.len = sizeof("text/html") - 1; + r->headers_out.content_type.data = (u_char *) "text/html"; + + } else { + r->headers_out.content_length_n = -1; + } + + 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); + + rc = ngx_http_send_header(r); + + if (rc == NGX_ERROR || r->header_only) { + return rc; + } + + if (error_pages[err].len == 0) { + return NGX_OK; + } + + + b = ngx_calloc_buf(r->pool); + if (b == NULL) { + return NGX_ERROR; + } + + b->memory = 1; + b->pos = error_pages[err].data; + b->last = error_pages[err].data + error_pages[err].len; + + cl = ngx_alloc_chain_link(r->pool); + if (cl == NULL) { + return NGX_ERROR; + } + + cl->buf = b; + out = cl; + + + b = ngx_calloc_buf(r->pool); + if (b == NULL) { + return NGX_ERROR; + } + + b->memory = 1; + b->pos = error_tail; + b->last = error_tail + sizeof(error_tail) - 1; + + cl->next = ngx_alloc_chain_link(r->pool); + if (cl->next == NULL) { + return NGX_ERROR; + } + + cl = cl->next; + cl->buf = b; + + if (msie_padding) { + b = ngx_calloc_buf(r->pool); + if (b == NULL) { + return NGX_ERROR; + } + + b->memory = 1; + b->pos = ngx_http_msie_stub; + b->last = ngx_http_msie_stub + sizeof(ngx_http_msie_stub) - 1; + + cl->next = ngx_alloc_chain_link(r->pool); + if (cl->next == NULL) { + return NGX_ERROR; + } + + cl = cl->next; + cl->buf = b; + } + + if (r == r->main) { + b->last_buf = 1; + } + + b->last_in_chain = 1; + + cl->next = NULL; + + return ngx_http_output_filter(r, out); +}