3 * Guacamole - Clientless Remote Desktop
4 * Copyright (C) 2010 Michael Jumper
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU Affero General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU Affero General Public License for more details.
16 * You should have received a copy of the GNU Affero General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
24 #include <sys/types.h>
25 #include <sys/socket.h>
26 #include <netinet/in.h>
32 #include <guacamole/client.h>
34 typedef struct client_thread_data {
41 void* start_client_thread(void* data) {
44 client_thread_data* thread_data = (client_thread_data*) data;
46 syslog(LOG_INFO, "Spawning client");
48 /* Load and start client */
49 client = guac_get_client(thread_data->fd);
52 syslog(LOG_ERR, "Client retrieval failed");
56 guac_start_client(client);
58 guac_free_client(client);
61 if (close(thread_data->fd) < 0) {
62 syslog(LOG_ERR, "Error closing connection: %s", strerror(errno));
67 syslog(LOG_INFO, "Client finished");
73 int main(int argc, char* argv[]) {
77 struct sockaddr_in server_addr;
81 struct sockaddr_in client_addr;
82 unsigned int client_addr_len;
83 int connected_socket_fd;
86 int listen_port = 4822; /* Default port */
93 while ((opt = getopt(argc, argv, "l:")) != -1) {
95 listen_port = atoi(optarg);
96 if (listen_port <= 0) {
97 fprintf(stderr, "Invalid port: %s\n", optarg);
102 fprintf(stderr, "USAGE: %s [-l LISTENPORT]\n", argv[0]);
107 /* Get binding address */
108 memset(&server_addr, 0, sizeof(server_addr)); /* Zero struct */
109 server_addr.sin_family = AF_INET;
110 server_addr.sin_addr.s_addr = INADDR_ANY;
111 server_addr.sin_port = htons(listen_port);
114 socket_fd = socket(AF_INET, SOCK_STREAM, 0);
116 fprintf(stderr, "Error opening socket: %s\n", strerror(errno));
120 if (setsockopt(socket_fd, SOL_SOCKET, SO_REUSEADDR, &opt_on, sizeof(opt_on))) {
121 fprintf(stderr, "Warning: Unable to set socket options for reuse: %s\n", strerror(errno));
124 /* Bind socket to address */
125 if (bind(socket_fd, (struct sockaddr*) &server_addr,
126 sizeof(server_addr)) < 0) {
127 fprintf(stderr, "Error binding socket: %s\n", strerror(errno));
131 /* Fork into background */
135 if (daemon_pid == -1) {
136 fprintf(stderr, "Error forking daemon process: %s\n", strerror(errno));
140 /* If parent, exit */
141 else if (daemon_pid != 0) {
145 /* Otherwise, this is the daemon */
146 syslog(LOG_INFO, "Started, listening on port %i", listen_port);
152 client_thread_data* data;
154 /* Listen for connections */
155 if (listen(socket_fd, 5) < 0) {
156 syslog(LOG_ERR, "Could not listen on socket: %s", strerror(errno));
160 /* Accept connection */
161 client_addr_len = sizeof(client_addr);
162 connected_socket_fd = accept(socket_fd, (struct sockaddr*) &client_addr, &client_addr_len);
163 if (connected_socket_fd < 0) {
164 syslog(LOG_ERR, "Could not accept client connection: %s", strerror(errno));
168 data = malloc(sizeof(client_thread_data));
169 data->fd = connected_socket_fd;
171 if (pthread_create(&thread, NULL, start_client_thread, (void*) data)) {
172 syslog(LOG_ERR, "Could not create client thread: %s", strerror(errno));
179 if (close(socket_fd) < 0) {
180 syslog(LOG_ERR, "Could not close socket: %s", strerror(errno));