| /* |
| * 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. |
| */ |
| |
| #ifndef GUACD_CONNECTION_H |
| #define GUACD_CONNECTION_H |
| |
| #include "config.h" |
| |
| #include "proc-map.h" |
| |
| #ifdef ENABLE_SSL |
| #include <openssl/ssl.h> |
| #endif |
| |
| /** |
| * Parameters required by each connection thread. |
| */ |
| typedef struct guacd_connection_thread_params { |
| |
| /** |
| * The shared map of all connected clients. |
| */ |
| guacd_proc_map* map; |
| |
| #ifdef ENABLE_SSL |
| /** |
| * SSL context for encrypted connections to guacd. If SSL is not active, |
| * this will be NULL. |
| */ |
| SSL_CTX* ssl_context; |
| #endif |
| |
| /** |
| * The file descriptor associated with the newly-accepted connection. |
| */ |
| int connected_socket_fd; |
| |
| } guacd_connection_thread_params; |
| |
| /** |
| * Handles an inbound connection to guacd, allowing guacd to continue listening |
| * for other connections. The file descriptor of the inbound connection will |
| * either be given to a new process for a new remote desktop connection, or |
| * will be passed to an existing process for joining an existing remote desktop |
| * connection. It is expected that this thread will operate detached. The |
| * creating process need not join on the resulting thread. |
| * |
| * @param data |
| * A pointer to a guacd_connection_thread_params structure containing the |
| * shared overall map of currently-connected processes, the file |
| * descriptor associated with the newly-established connection that is to |
| * be either (1) associated with a new process or (2) passed on to an |
| * existing process, and the SSL context for the encryption surrounding |
| * that connection (if any). |
| * |
| * @return |
| * Always NULL. |
| */ |
| void* guacd_connection_thread(void* data); |
| |
| /** |
| * Parameters required by the per-connection I/O transfer thread. |
| */ |
| typedef struct guacd_connection_io_thread_params { |
| |
| /** |
| * The guac_parser which may contain buffered, but unparsed, data from the |
| * original guac_socket which must be transferred to the |
| * connection-specific process. |
| */ |
| guac_parser* parser; |
| |
| /** |
| * The guac_socket which is directly handling I/O from a user's connection |
| * to guacd. |
| */ |
| guac_socket* socket; |
| |
| /** |
| * The file descriptor which is being handled by a guac_socket within the |
| * connection-specific process. |
| */ |
| int fd; |
| |
| } guacd_connection_io_thread_params; |
| |
| /** |
| * Transfers data back and forth between the guacd-side guac_socket and the |
| * file descriptor used by the process-side guac_socket. Note that both the |
| * provided guac_parser and the guac_socket will be freed once this thread |
| * terminates, which will occur when no further data can be read from the |
| * guac_socket. |
| * |
| * @param data |
| * A pointer to a guacd_connection_io_thread_params structure containing |
| * the guac_socket and file descriptor to transfer data between |
| * (bidirectionally), as well as the guac_parser associated with the |
| * guac_socket (which may have unhandled data in its parsing buffers). |
| * |
| * @return |
| * Always NULL. |
| */ |
| void* guacd_connection_io_thread(void* data); |
| |
| #endif |
| |