static ngx_int_t
ngx_http_send_error_page(ngx_http_request_t *r, ngx_http_err_page_t *err_page)
{
ngx_int_t overwrite;
ngx_str_t uri, args;
ngx_table_elt_t *location;
ngx_http_core_loc_conf_t *clcf;
overwrite = err_page->overwrite;
if (overwrite && overwrite != NGX_HTTP_OK) {
r->expect_tested = 1;
}
if (overwrite >= 0) {
r->err_status = overwrite;
}
location = ngx_list_push(&r->headers_out.headers);
if (location == NULL) {
return NGX_ERROR;
}
if (overwrite != NGX_HTTP_MOVED_PERMANENTLY
&& overwrite != NGX_HTTP_MOVED_TEMPORARILY
&& overwrite != NGX_HTTP_SEE_OTHER
&& overwrite != NGX_HTTP_TEMPORARY_REDIRECT)
{
r->err_status = NGX_HTTP_MOVED_TEMPORARILY;
}
location->hash = 1;
ngx_str_set(&location->key, "Location");
location->value = uri;
ngx_http_clear_location(r);
r->headers_out.location = location;
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
if (clcf->msie_refresh && r->headers_in.msie) {
return ngx_http_send_refresh(r);
}
return ngx_http_send_special_response(r, clcf, r->err_status
- NGX_HTTP_MOVED_PERMANENTLY
+ NGX_HTTP_OFF_3XX);
}
static ngx_int_t
ngx_http_send_error_page(ngx_http_request_t *r, ngx_http_err_page_t *err_page)
{
ngx_int_t overwrite;
ngx_str_t uri, args;
ngx_table_elt_t *location;
ngx_http_core_loc_conf_t *clcf;
overwrite = err_page->overwrite;
if (overwrite && overwrite != NGX_HTTP_OK) {
r->expect_tested = 1;
}
if (overwrite >= 0) {
r->err_status = overwrite;
}
if (ngx_http_complex_value(r, &err_page->value, &uri) != NGX_OK) {
return NGX_ERROR;
}
if (uri.len && uri.data[0] == '/') {
if (err_page->value.lengths) {
ngx_http_split_args(r, &uri, &args);
} else {
args = err_page->args;
}
if (r->method != NGX_HTTP_HEAD) {
r->method = NGX_HTTP_GET;
r->method_name = ngx_http_get_name;
}
return ngx_http_internal_redirect(r, &uri, &args);
}
if (uri.len && uri.data[0] == '@') {
return ngx_http_named_location(r, &uri);
}
location = ngx_list_push(&r->headers_out.headers);
if (location == NULL) {
return NGX_ERROR;
}
if (overwrite != NGX_HTTP_MOVED_PERMANENTLY
&& overwrite != NGX_HTTP_MOVED_TEMPORARILY
&& overwrite != NGX_HTTP_SEE_OTHER
&& overwrite != NGX_HTTP_TEMPORARY_REDIRECT)
{
r->err_status = NGX_HTTP_MOVED_TEMPORARILY;
}
location->hash = 1;
ngx_str_set(&location->key, "Location");
location->value = uri;
ngx_http_clear_location(r);
r->headers_out.location = location;
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
if (clcf->msie_refresh && r->headers_in.msie) {
return ngx_http_send_refresh(r);
}
return ngx_http_send_special_response(r, clcf, r->err_status
- NGX_HTTP_MOVED_PERMANENTLY
+ NGX_HTTP_OFF_3XX);
}
ngx_int_t
ngx_http_special_response_handler(ngx_http_request_t *r, ngx_int_t error)
{
ngx_uint_t i, err;
ngx_http_err_page_t *err_page;
ngx_http_core_loc_conf_t *clcf;
ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http special response: %i, \"%V?%V\"",
error, &r->uri, &r->args);
r->err_status = error;
if (r->keepalive) {
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:
case NGX_HTTP_NOT_IMPLEMENTED:
r->keepalive = 0;
}
}
if (r->lingering_close) {
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 && r->uri_changes != 0) {
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) {
return ngx_http_send_error_page(r, &err_page[i]);
}
}
}
r->expect_tested = 1;
if (ngx_http_discard_request_body(r) != NGX_OK) {
r->keepalive = 0;
}
if (clcf->msie_refresh
&& r->headers_in.msie
&& (error == NGX_HTTP_MOVED_PERMANENTLY
|| error == NGX_HTTP_MOVED_TEMPORARILY))
{
return ngx_http_send_refresh(r);
}
if (error == NGX_HTTP_CREATED) {
/* 201 */
err = 0;
} else if (error == NGX_HTTP_NO_CONTENT) {
/* 204 */
err = 0;
} else if (error >= NGX_HTTP_MOVED_PERMANENTLY
&& error < NGX_HTTP_LAST_3XX)
{
/* 3XX */
err = error - NGX_HTTP_MOVED_PERMANENTLY + NGX_HTTP_OFF_3XX;
} else if (error >= NGX_HTTP_BAD_REQUEST
&& error < NGX_HTTP_LAST_4XX)
{
/* 4XX */
err = error - NGX_HTTP_BAD_REQUEST + NGX_HTTP_OFF_4XX;
} else if (error >= NGX_HTTP_NGINX_CODES
&& error < NGX_HTTP_LAST_5XX)
{
/* 49X, 5XX */
err = error - NGX_HTTP_NGINX_CODES + NGX_HTTP_OFF_5XX;
switch (error) {
case NGX_HTTP_TO_HTTPS:
case NGX_HTTPS_CERT_ERROR:
case NGX_HTTPS_NO_CERT:
case NGX_HTTP_REQUEST_HEADER_TOO_LARGE:
r->err_status = NGX_HTTP_BAD_REQUEST;
break;
}
} else {
/* unknown code, zero body */
err = 0;
}
return ngx_http_send_special_response(r, clcf, err);
}
static ngx_int_t
ngx_http_send_error_page(ngx_http_request_t *r, ngx_http_err_page_t *err_page)
{
u_char ch, *p, *last;
ngx_str_t *uri, *args, u, a;
ngx_table_elt_t *location;
ngx_http_core_loc_conf_t *clcf;
r->err_status = err_page->overwrite;
r->method = NGX_HTTP_GET;
r->method_name = ngx_http_get_name;
r->zero_in_uri = 0;
args = NULL;
if (err_page->uri_lengths) {
if (ngx_http_script_run(r, &u, err_page->uri_lengths->elts, 0,
err_page->uri_values->elts)
== NULL)
{
return NGX_ERROR;
}
p = u.data;
uri = &u;
if (*p == '/') {
last = p + uri->len;
while (p < last) {
ch = *p++;
if (ch == '?') {
a.len = last - p;
a.data = p;
args = &a;
u.len = p - 1 - u.data;
while (p < last) {
if (*p++ == '\0') {
r->zero_in_uri = 1;
break;
}
}
break;
}
if (ch == '\0') {
r->zero_in_uri = 1;
continue;
}
}
}
} else {
uri = &err_page->uri;
}
if (uri->data[0] == '/') {
return ngx_http_internal_redirect(r, uri, args);
}
if (uri->data[0] == '@') {
return ngx_http_named_location(r, uri);
}
location = ngx_list_push(&r->headers_out.headers);
if (location == NULL) {
return NGX_ERROR;
}
r->err_status = NGX_HTTP_MOVED_TEMPORARILY;
location->hash = 1;
location->key.len = sizeof("Location") - 1;
location->key.data = (u_char *) "Location";
location->value = *uri;
r->headers_out.location = location;
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
if (clcf->msie_refresh && r->headers_in.msie) {
return ngx_http_send_refresh(r);
}
return ngx_http_send_special_response(r, clcf, NGX_HTTP_MOVED_TEMPORARILY
- NGX_HTTP_MOVED_PERMANENTLY
+ NGX_HTTP_LEVEL_200);
}
ngx_int_t
ngx_http_special_response_handler(ngx_http_request_t *r, ngx_int_t error)
{
ngx_int_t rc;
ngx_uint_t i, err;
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) {
return ngx_http_send_error_page(r, &err_page[i]);
}
}
}
if (clcf->msie_refresh
&& r->headers_in.msie
&& (error == NGX_HTTP_MOVED_PERMANENTLY
|| error == NGX_HTTP_MOVED_TEMPORARILY))
{
return ngx_http_send_refresh(r);
}
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;
break;
}
}
return ngx_http_send_special_response(r, clcf, err);
}
static ngx_int_t
ngx_http_send_error_page(ngx_http_request_t *r, ngx_http_err_page_t *err_page)
{
ngx_int_t overwrite;
ngx_str_t uri, args;
ngx_table_elt_t *location;
ngx_http_core_loc_conf_t *clcf;
overwrite = err_page->overwrite;
if (overwrite && overwrite != NGX_HTTP_OK) {
r->expect_tested = 1;
}
r->err_status = overwrite;
r->zero_in_uri = 0;
if (ngx_http_complex_value(r, &err_page->value, &uri) != NGX_OK) {
return NGX_ERROR;
}
if (uri.data[0] == '/') {
if (err_page->value.lengths) {
ngx_http_split_args(r, &uri, &args);
} else {
args = err_page->args;
}
if (r->method != NGX_HTTP_HEAD) {
r->method = NGX_HTTP_GET;
r->method_name = ngx_http_get_name;
}
return ngx_http_internal_redirect(r, &uri, &args);
}
if (uri.data[0] == '@') {
return ngx_http_named_location(r, &uri);
}
location = ngx_list_push(&r->headers_out.headers);
if (location == NULL) {
return NGX_ERROR;
}
r->err_status = NGX_HTTP_MOVED_TEMPORARILY;
location->hash = 1;
location->key.len = sizeof("Location") - 1;
location->key.data = (u_char *) "Location";
location->value = uri;
r->headers_out.location = location;
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
if (clcf->msie_refresh && r->headers_in.msie) {
return ngx_http_send_refresh(r);
}
return ngx_http_send_special_response(r, clcf, NGX_HTTP_MOVED_TEMPORARILY
- NGX_HTTP_MOVED_PERMANENTLY
+ NGX_HTTP_LEVEL_200);
}