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- /* 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 "ap_config.h"
- #include "ap_mmn.h"
- #include "httpd.h"
- #include "http_config.h"
- #include "http_connection.h"
- #include "apr_buckets.h"
- #include "util_filter.h"
- module AP_MODULE_DECLARE_DATA echo_module;
- typedef struct {
- int bEnabled;
- } EchoConfig;
- static void *create_echo_server_config(apr_pool_t *p, server_rec *s)
- {
- EchoConfig *pConfig = apr_pcalloc(p, sizeof *pConfig);
- pConfig->bEnabled = 0;
- return pConfig;
- }
- static const char *echo_on(cmd_parms *cmd, void *dummy, int arg)
- {
- EchoConfig *pConfig = ap_get_module_config(cmd->server->module_config,
- &echo_module);
- pConfig->bEnabled = arg;
- return NULL;
- }
- static int process_echo_connection(conn_rec *c)
- {
- apr_bucket_brigade *bb;
- apr_bucket *b;
- apr_status_t rv;
- EchoConfig *pConfig = ap_get_module_config(c->base_server->module_config,
- &echo_module);
- if (!pConfig->bEnabled) {
- return DECLINED;
- }
- do {
- bb = apr_brigade_create(c->pool, c->bucket_alloc);
- /* Get a single line of input from the client */
- if (((rv = ap_get_brigade(c->input_filters, bb, AP_MODE_GETLINE,
- APR_BLOCK_READ, 0)) != APR_SUCCESS) ||
- APR_BRIGADE_EMPTY(bb)) {
- apr_brigade_destroy(bb);
- break;
- }
- /* Make sure the data is flushed to the client */
- b = apr_bucket_flush_create(c->bucket_alloc);
- APR_BRIGADE_INSERT_TAIL(bb, b);
- /* Send back the data. */
- rv = ap_pass_brigade(c->output_filters, bb);
- } while (rv == APR_SUCCESS);
- return OK;
- }
- static const command_rec echo_cmds[] =
- {
- AP_INIT_FLAG("ProtocolEcho", echo_on, NULL, RSRC_CONF,
- "Run an echo server on this host"),
- { NULL }
- };
- static void register_hooks(apr_pool_t *p)
- {
- ap_hook_process_connection(process_echo_connection, NULL, NULL,
- APR_HOOK_MIDDLE);
- }
- module AP_MODULE_DECLARE_DATA echo_module = {
- STANDARD20_MODULE_STUFF,
- NULL, /* create per-directory config structure */
- NULL, /* merge per-directory config structures */
- create_echo_server_config, /* create per-server config structure */
- NULL, /* merge per-server config structures */
- echo_cmds, /* command apr_table_t */
- register_hooks /* register hooks */
- };
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