133 lines
4.2 KiB
C
133 lines
4.2 KiB
C
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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#include "config.h"
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#include "argv.h"
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#include "client.h"
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#include "settings.h"
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#include "telnet.h"
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#include "user.h"
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#include <langinfo.h>
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#include <locale.h>
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#include <pthread.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <guacamole/argv.h>
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#include <guacamole/client.h>
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#include <guacamole/recording.h>
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#include <guacamole/socket.h>
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/**
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* A pending join handler implementation that will synchronize the connection
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* state for all pending users prior to them being promoted to full user.
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*
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* @param client
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* The client whose pending users are about to be promoted.
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*
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* @return
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* Always zero.
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*/
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static int guac_telnet_join_pending_handler(guac_client* client) {
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guac_telnet_client* telnet_client = (guac_telnet_client*) client->data;
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/* Synchronize the terminal state to all pending users */
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if (telnet_client->term != NULL) {
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guac_socket* broadcast_socket = client->pending_socket;
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guac_terminal_sync_users(telnet_client->term, client, broadcast_socket);
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guac_telnet_send_current_argv_batch(client, broadcast_socket);
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guac_socket_flush(broadcast_socket);
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}
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return 0;
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}
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int guac_client_init(guac_client* client) {
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/* Set client args */
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client->args = GUAC_TELNET_CLIENT_ARGS;
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/* Allocate client instance data */
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guac_telnet_client* telnet_client = calloc(1, sizeof(guac_telnet_client));
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client->data = telnet_client;
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/* Init telnet client */
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telnet_client->socket_fd = -1;
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telnet_client->naws_enabled = 0;
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telnet_client->echo_enabled = 1;
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/* Set handlers */
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client->join_handler = guac_telnet_user_join_handler;
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client->join_pending_handler = guac_telnet_join_pending_handler;
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client->free_handler = guac_telnet_client_free_handler;
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client->leave_handler = guac_telnet_user_leave_handler;
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/* Register handlers for argument values that may be sent after the handshake */
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guac_argv_register(GUAC_TELNET_ARGV_COLOR_SCHEME, guac_telnet_argv_callback, NULL, GUAC_ARGV_OPTION_ECHO);
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guac_argv_register(GUAC_TELNET_ARGV_FONT_NAME, guac_telnet_argv_callback, NULL, GUAC_ARGV_OPTION_ECHO);
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guac_argv_register(GUAC_TELNET_ARGV_FONT_SIZE, guac_telnet_argv_callback, NULL, GUAC_ARGV_OPTION_ECHO);
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/* Set locale and warn if not UTF-8 */
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setlocale(LC_CTYPE, "");
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if (strcmp(nl_langinfo(CODESET), "UTF-8") != 0) {
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guac_client_log(client, GUAC_LOG_INFO,
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"Current locale does not use UTF-8. Some characters may "
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"not render correctly.");
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}
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/* Success */
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return 0;
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}
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int guac_telnet_client_free_handler(guac_client* client) {
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guac_telnet_client* telnet_client = (guac_telnet_client*) client->data;
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/* Close telnet connection */
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if (telnet_client->socket_fd != -1)
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close(telnet_client->socket_fd);
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/* Clean up recording, if in progress */
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if (telnet_client->recording != NULL)
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guac_recording_free(telnet_client->recording);
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/* Kill terminal */
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guac_terminal_free(telnet_client->term);
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/* Wait for and free telnet session, if connected */
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if (telnet_client->telnet != NULL) {
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pthread_join(telnet_client->client_thread, NULL);
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telnet_free(telnet_client->telnet);
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}
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/* Free settings */
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if (telnet_client->settings != NULL)
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guac_telnet_settings_free(telnet_client->settings);
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free(telnet_client);
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return 0;
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}
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