More reorganization

guacamole/native/guacd/src/daemon.c

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+
+/*
+ *  Guacamole - Clientless Remote Desktop
+ *  Copyright (C) 2010  Michael Jumper
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <pthread.h>
+
+#include <errno.h>
+#include <syslog.h>
+
+#include <guacamole/client.h>
+
+typedef struct client_thread_data {
+
+    int fd;
+
+} client_thread_data;
+
+
+void* start_client_thread(void* data) {
+
+    guac_client* client;
+    client_thread_data* thread_data = (client_thread_data*) data;
+
+    syslog(LOG_INFO, "Spawning client");
+
+    /* Load and start client */
+    client = guac_get_client(thread_data->fd); 
+
+    if (client == NULL) {
+        syslog(LOG_ERR, "Client retrieval failed");
+        return NULL;
+    }
+
+    guac_start_client(client);
+
+    guac_free_client(client);
+
+    /* Close socket */
+    if (close(thread_data->fd) < 0) {
+        syslog(LOG_ERR, "Error closing connection: %s", strerror(errno));
+        free(data);
+        return NULL;
+    }
+
+    syslog(LOG_INFO, "Client finished");
+    free(data);
+    return NULL;
+
+}
+
+int main(int argc, char* argv[]) {
+
+    /* Server */
+    int socket_fd;
+    struct sockaddr_in server_addr;
+
+    /* Client */
+    struct sockaddr_in client_addr;
+    unsigned int client_addr_len;
+    int connected_socket_fd;
+
+    /* Arguments */
+    int listen_port = 4822; /* Default port */
+    int opt;
+
+    /* Parse arguments */
+    while ((opt = getopt(argc, argv, "l:")) != -1) {
+        if (opt == 'l') {
+            listen_port = atoi(optarg);
+            if (listen_port <= 0) {
+                fprintf(stderr, "Invalid port: %s\n", optarg);
+                exit(EXIT_FAILURE);
+            }
+        }
+        else {
+            fprintf(stderr, "USAGE: %s [-l LISTENPORT]\n", argv[0]);
+            exit(EXIT_FAILURE);
+        }
+    }
+
+    /* Get binding address */
+    memset(&server_addr, 0, sizeof(server_addr)); /* Zero struct */
+    server_addr.sin_family = AF_INET;
+    server_addr.sin_addr.s_addr = INADDR_ANY;
+    server_addr.sin_port = htons(listen_port);
+
+    /* Get socket */
+    socket_fd = socket(AF_INET, SOCK_STREAM, 0);
+    if (socket_fd < 0) {
+        fprintf(stderr, "Error opening socket: %s\n", strerror(errno));
+        exit(EXIT_FAILURE);
+    }
+
+    /* Bind socket to address */
+    if (bind(socket_fd, (struct sockaddr*) &server_addr,
+                sizeof(server_addr)) < 0) {
+        fprintf(stderr, "Error binding socket: %s\n", strerror(errno));
+        exit(EXIT_FAILURE);
+    } 
+
+    syslog(LOG_INFO, "Started, listening on port %i", listen_port);
+
+
+    /* Daemon loop */
+    for (;;) {
+
+        pthread_t thread;
+        client_thread_data* data;
+
+        /* Listen for connections */
+        if (listen(socket_fd, 5) < 0) {
+            syslog(LOG_ERR, "Could not listen on socket: %s", strerror(errno));
+            return 3;
+        }
+
+        /* Accept connection */
+        client_addr_len = sizeof(client_addr);
+        connected_socket_fd = accept(socket_fd, (struct sockaddr*) &client_addr, &client_addr_len);
+        if (connected_socket_fd < 0) {
+            syslog(LOG_ERR, "Could not accept client connection: %s", strerror(errno));
+            return 3;
+        }
+
+        data = malloc(sizeof(client_thread_data));
+        data->fd = connected_socket_fd;
+
+        if (pthread_create(&thread, NULL, start_client_thread, (void*) data)) {
+            syslog(LOG_ERR, "Could not create client thread: %s", strerror(errno));
+            return 3;
+        }
+
+    }
+
+    /* Close socket */
+    if (close(socket_fd) < 0) {
+        syslog(LOG_ERR, "Could not close socket: %s", strerror(errno));
+        return 3;
+    }
+
+    return 0;
+
+}
+