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-rw-r--r--modules/generators/mod_asis.c128
1 files changed, 128 insertions, 0 deletions
diff --git a/modules/generators/mod_asis.c b/modules/generators/mod_asis.c
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+++ b/modules/generators/mod_asis.c
@@ -0,0 +1,128 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "apr_strings.h"
+#include "ap_config.h"
+#include "httpd.h"
+#include "http_config.h"
+#include "http_protocol.h"
+#include "http_log.h"
+#include "util_script.h"
+#include "http_main.h"
+#include "http_request.h"
+
+#include "mod_core.h"
+
+#define ASIS_MAGIC_TYPE "httpd/send-as-is"
+
+static int asis_handler(request_rec *r)
+{
+ apr_file_t *f;
+ apr_status_t rv;
+ const char *location;
+
+ if (strcmp(r->handler, ASIS_MAGIC_TYPE) && strcmp(r->handler, "send-as-is")) {
+ return DECLINED;
+ }
+
+ r->allowed |= (AP_METHOD_BIT << M_GET);
+ if (r->method_number != M_GET) {
+ return DECLINED;
+ }
+
+ if (r->finfo.filetype == APR_NOFILE) {
+ ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(01233)
+ "File does not exist: %s", r->filename);
+ return HTTP_NOT_FOUND;
+ }
+
+ if ((rv = apr_file_open(&f, r->filename, APR_READ,
+ APR_OS_DEFAULT, r->pool)) != APR_SUCCESS) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, APLOGNO(01234)
+ "file permissions deny server access: %s", r->filename);
+ return HTTP_FORBIDDEN;
+ }
+
+ ap_scan_script_header_err_ex(r, f, NULL, APLOG_MODULE_INDEX);
+ location = apr_table_get(r->headers_out, "Location");
+
+ if (location && location[0] == '/' &&
+ ((r->status == HTTP_OK) || ap_is_HTTP_REDIRECT(r->status))) {
+
+ apr_file_close(f);
+
+ /* Internal redirect -- fake-up a pseudo-request */
+ r->status = HTTP_OK;
+
+ /* This redirect needs to be a GET no matter what the original
+ * method was.
+ */
+ r->method = "GET";
+ r->method_number = M_GET;
+
+ ap_internal_redirect_handler(location, r);
+ return OK;
+ }
+
+ if (!r->header_only) {
+ conn_rec *c = r->connection;
+ apr_bucket_brigade *bb;
+ apr_bucket *b;
+ apr_off_t pos = 0;
+
+ rv = apr_file_seek(f, APR_CUR, &pos);
+ if (rv != APR_SUCCESS) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, APLOGNO(01235)
+ "mod_asis: failed to find end-of-headers position "
+ "for %s", r->filename);
+ apr_file_close(f);
+ return HTTP_INTERNAL_SERVER_ERROR;
+ }
+
+ bb = apr_brigade_create(r->pool, c->bucket_alloc);
+ apr_brigade_insert_file(bb, f, pos, r->finfo.size - pos, r->pool);
+
+ b = apr_bucket_eos_create(c->bucket_alloc);
+ APR_BRIGADE_INSERT_TAIL(bb, b);
+ rv = ap_pass_brigade(r->output_filters, bb);
+ if (rv != APR_SUCCESS) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, APLOGNO(01236)
+ "mod_asis: ap_pass_brigade failed for file %s", r->filename);
+ return AP_FILTER_ERROR;
+ }
+ }
+ else {
+ apr_file_close(f);
+ }
+
+ return OK;
+}
+
+static void register_hooks(apr_pool_t *p)
+{
+ ap_hook_handler(asis_handler,NULL,NULL,APR_HOOK_MIDDLE);
+}
+
+AP_DECLARE_MODULE(asis) =
+{
+ STANDARD20_MODULE_STUFF,
+ NULL, /* create per-directory config structure */
+ NULL, /* merge per-directory config structures */
+ NULL, /* create per-server config structure */
+ NULL, /* merge per-server config structures */
+ NULL, /* command apr_table_t */
+ register_hooks /* register hooks */
+};