Mercurial > hg > nginx-quic
view src/http/ngx_http_special_response.c @ 1334:80de622646b0 release-0.6.5
nginx-0.6.5-RELEASE
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Mon, 23 Jul 2007 07:57:08 +0000 |
parents | 458e041fc902 |
children | 7443fbe0b013 |
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/* * 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 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 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_412_page[] = "<html>" CRLF "<head><title>412 Precondition Failed</title></head>" CRLF "<body bgcolor=\"white\">" CRLF "<center><h1>412 Precondition Failed</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_string(error_412_page), 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) }; static ngx_str_t ngx_http_get_name = { 3, (u_char *) "GET " }; ngx_int_t ngx_http_special_response_handler(ngx_http_request_t *r, ngx_int_t error) { u_char *p; size_t msie_refresh; uintptr_t escape; ngx_int_t rc; ngx_buf_t *b; ngx_str_t *uri, *location; 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->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; r->method_name = ngx_http_get_name; 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->err_status = NGX_HTTP_BAD_REQUEST; error = NGX_HTTP_BAD_REQUEST; break; } } msie_padding = 0; if (!r->zero_body) { 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; } } else { r->headers_out.content_length_n = 0; err = 0; } if (r->headers_out.content_length) { r->headers_out.content_length->hash = 0; r->headers_out.content_length = NULL; } if (clcf->msie_refresh && r->headers_in.msie && (error == NGX_HTTP_MOVED_PERMANENTLY || error == NGX_HTTP_MOVED_TEMPORARILY)) { location = &r->headers_out.location->value; escape = 2 * ngx_escape_uri(NULL, location->data, location->len, NGX_ESCAPE_REFRESH); msie_refresh = sizeof(ngx_http_msie_refresh_head) - 1 + escape + location->len + sizeof(ngx_http_msie_refresh_tail) - 1; r->err_status = NGX_HTTP_OK; r->headers_out.content_type_len = sizeof("text/html") - 1; r->headers_out.content_length_n = msie_refresh; r->headers_out.location->hash = 0; r->headers_out.location = NULL; } else { location = NULL; escape = 0; msie_refresh = 0; } 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 (msie_refresh == 0) { 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; } } else { b = ngx_create_temp_buf(r->pool, msie_refresh); if (b == NULL) { return NGX_ERROR; } p = ngx_cpymem(b->pos, ngx_http_msie_refresh_head, sizeof(ngx_http_msie_refresh_head) - 1); if (escape == 0) { p = ngx_cpymem(p, location->data, location->len); } else { p = (u_char *) ngx_escape_uri(p, location->data, location->len, NGX_ESCAPE_REFRESH); } b->last = ngx_cpymem(p, ngx_http_msie_refresh_tail, sizeof(ngx_http_msie_refresh_tail) - 1); cl = ngx_alloc_chain_link(r->pool); if (cl == NULL) { return NGX_ERROR; } cl->buf = b; out = cl; } if (r == r->main) { b->last_buf = 1; } b->last_in_chain = 1; cl->next = NULL; return ngx_http_output_filter(r, out); }