int guac_client_init(guac_client* client, int argc, char** argv) {
/* Set client args */
client->args = GUAC_RDP_CLIENT_ARGS;
/* Alloc client data */
guac_rdp_client* rdp_client = calloc(1, sizeof(guac_rdp_client));
client->data = rdp_client;
/* Init clipboard */
rdp_client->clipboard = guac_common_clipboard_alloc(GUAC_RDP_CLIPBOARD_MAX_LENGTH);
/* Init display update module */
rdp_client->disp = guac_rdp_disp_alloc();
/* Recursive attribute for locks */
pthread_mutexattr_init(&(rdp_client->attributes));
pthread_mutexattr_settype(&(rdp_client->attributes),
PTHREAD_MUTEX_RECURSIVE);
/* Init RDP lock */
pthread_mutex_init(&(rdp_client->rdp_lock), &(rdp_client->attributes));
/* Set handlers */
client->join_handler = guac_rdp_user_join_handler;
client->free_handler = guac_rdp_client_free_handler;
#ifdef ENABLE_COMMON_SSH
guac_common_ssh_init(client);
#endif
return 0;
}
int guac_client_init(guac_client* client) {
/* Set client args */
client->args = GUAC_VNC_CLIENT_ARGS;
/* Alloc client data */
guac_vnc_client* vnc_client = calloc(1, sizeof(guac_vnc_client));
client->data = vnc_client;
#ifdef ENABLE_VNC_TLS_LOCKING
/* Initialize the write lock */
pthread_mutex_init(&(vnc_client->tls_lock), NULL);
#endif
/* Init clipboard */
vnc_client->clipboard = guac_common_clipboard_alloc(GUAC_VNC_CLIPBOARD_MAX_LENGTH);
/* Set handlers */
client->join_handler = guac_vnc_user_join_handler;
client->leave_handler = guac_vnc_user_leave_handler;
client->free_handler = guac_vnc_client_free_handler;
return 0;
}
int guac_client_init(guac_client* client, int argc, char** argv) {
rfbClient* rfb_client;
vnc_guac_client_data* guac_client_data;
int retries_remaining;
/* Set up libvncclient logging */
rfbClientLog = guac_vnc_client_log_info;
rfbClientErr = guac_vnc_client_log_error;
/*** PARSE ARGUMENTS ***/
if (argc != VNC_ARGS_COUNT) {
guac_client_abort(client, GUAC_PROTOCOL_STATUS_SERVER_ERROR, "Wrong argument count received.");
return 1;
}
/* Alloc client data */
guac_client_data = malloc(sizeof(vnc_guac_client_data));
client->data = guac_client_data;
guac_client_data->hostname = strdup(argv[IDX_HOSTNAME]);
guac_client_data->port = atoi(argv[IDX_PORT]);
/* Set remote cursor flag */
guac_client_data->remote_cursor = (strcmp(argv[IDX_CURSOR], "remote") == 0);
/* Set red/blue swap flag */
guac_client_data->swap_red_blue = (strcmp(argv[IDX_SWAP_RED_BLUE], "true") == 0);
/* Set read-only flag */
guac_client_data->read_only = (strcmp(argv[IDX_READ_ONLY], "true") == 0);
/* Freed after use by libvncclient */
guac_client_data->password = strdup(argv[IDX_PASSWORD]);
/* Parse color depth */
guac_client_data->color_depth = atoi(argv[IDX_COLOR_DEPTH]);
#ifdef ENABLE_VNC_REPEATER
/* Set repeater parameters if specified */
if (argv[IDX_DEST_HOST][0] != '\0')
guac_client_data->dest_host = strdup(argv[IDX_DEST_HOST]);
else
guac_client_data->dest_host = NULL;
if (argv[IDX_DEST_PORT][0] != '\0')
guac_client_data->dest_port = atoi(argv[IDX_DEST_PORT]);
#endif
/* Set encodings if specified */
if (argv[IDX_ENCODINGS][0] != '\0')
guac_client_data->encodings = strdup(argv[IDX_ENCODINGS]);
else
guac_client_data->encodings = NULL;
/* Parse autoretry */
if (argv[IDX_AUTORETRY][0] != '\0')
retries_remaining = atoi(argv[IDX_AUTORETRY]);
else
retries_remaining = 0;
#ifdef ENABLE_VNC_LISTEN
/* Set reverse-connection flag */
guac_client_data->reverse_connect =
(strcmp(argv[IDX_REVERSE_CONNECT], "true") == 0);
/* Parse listen timeout */
if (argv[IDX_LISTEN_TIMEOUT][0] != '\0')
guac_client_data->listen_timeout = atoi(argv[IDX_LISTEN_TIMEOUT]);
else
guac_client_data->listen_timeout = 5000;
#endif
/* Init clipboard */
guac_client_data->clipboard = guac_common_clipboard_alloc(GUAC_VNC_CLIPBOARD_MAX_LENGTH);
/* Ensure connection is kept alive during lengthy connects */
guac_socket_require_keep_alive(client->socket);
/* Attempt connection */
rfb_client = __guac_vnc_get_client(client);
/* If unsuccessful, retry as many times as specified */
while (!rfb_client && retries_remaining > 0) {
guac_client_log_info(client,
"Connect failed. Waiting %ims before retrying...",
GUAC_VNC_CONNECT_INTERVAL);
/* Wait for given interval then retry */
usleep(GUAC_VNC_CONNECT_INTERVAL*1000);
rfb_client = __guac_vnc_get_client(client);
retries_remaining--;
}
/* If the final connect attempt fails, return error */
if (!rfb_client) {
guac_client_abort(client, GUAC_PROTOCOL_STATUS_UPSTREAM_ERROR, "Unable to connect to VNC server.");
return 1;
}
#ifdef ENABLE_PULSE
guac_client_data->audio_enabled =
(strcmp(argv[IDX_ENABLE_AUDIO], "true") == 0);
/* If an encoding is available, load an audio stream */
if (guac_client_data->audio_enabled) {
guac_client_data->audio = guac_audio_stream_alloc(client, NULL);
/* Load servername if specified */
if (argv[IDX_AUDIO_SERVERNAME][0] != '\0')
guac_client_data->pa_servername =
strdup(argv[IDX_AUDIO_SERVERNAME]);
else
guac_client_data->pa_servername = NULL;
/* If successful, init audio system */
if (guac_client_data->audio != NULL) {
guac_client_log_info(client,
"Audio will be encoded as %s",
guac_client_data->audio->encoder->mimetype);
/* Require threadsafe sockets if audio enabled */
guac_socket_require_threadsafe(client->socket);
/* Start audio stream */
guac_pa_start_stream(client);
}
/* Otherwise, audio loading failed */
else
guac_client_log_info(client,
"No available audio encoding. Sound disabled.");
} /* end if audio enabled */
#endif
/* Set remaining client data */
guac_client_data->rfb_client = rfb_client;
guac_client_data->copy_rect_used = 0;
guac_client_data->cursor = guac_client_alloc_buffer(client);
/* Set handlers */
client->handle_messages = vnc_guac_client_handle_messages;
client->free_handler = vnc_guac_client_free_handler;
/* If not read-only, set input handlers and pointer */
if (guac_client_data->read_only == 0) {
/* Only handle mouse/keyboard/clipboard if not read-only */
client->mouse_handler = vnc_guac_client_mouse_handler;
client->key_handler = vnc_guac_client_key_handler;
client->clipboard_handler = vnc_guac_client_clipboard_handler;
client->blob_handler = vnc_guac_client_blob_handler;
client->end_handler = vnc_guac_client_end_handler;
/* If not read-only but cursor is remote, set a dot cursor */
if (guac_client_data->remote_cursor)
guac_common_set_dot_cursor(client);
/* Otherwise, set pointer until explicitly requested otherwise */
else
guac_common_set_pointer_cursor(client);
}
/* Send name */
guac_protocol_send_name(client->socket, rfb_client->desktopName);
/* Send size */
guac_protocol_send_size(client->socket,
GUAC_DEFAULT_LAYER, rfb_client->width, rfb_client->height);
return 0;
}
int guac_client_init(guac_client* client, int argc, char** argv) {
rdp_guac_client_data* guac_client_data;
guac_rdp_settings* settings;
freerdp* rdp_inst;
/* Validate number of arguments received */
if (argc != RDP_ARGS_COUNT) {
guac_client_abort(client, GUAC_PROTOCOL_STATUS_SERVER_ERROR, "Wrong argument count received.");
return 1;
}
/* Allocate client data */
guac_client_data = malloc(sizeof(rdp_guac_client_data));
/* Init random number generator */
srandom(time(NULL));
/* Init client */
#ifdef HAVE_FREERDP_CHANNELS_GLOBAL_INIT
freerdp_channels_global_init();
#endif
rdp_inst = freerdp_new();
rdp_inst->PreConnect = rdp_freerdp_pre_connect;
rdp_inst->PostConnect = rdp_freerdp_post_connect;
rdp_inst->Authenticate = rdp_freerdp_authenticate;
rdp_inst->VerifyCertificate = rdp_freerdp_verify_certificate;
rdp_inst->ReceiveChannelData = __guac_receive_channel_data;
/* Allocate FreeRDP context */
#ifdef LEGACY_FREERDP
rdp_inst->context_size = sizeof(rdp_freerdp_context);
#else
rdp_inst->ContextSize = sizeof(rdp_freerdp_context);
#endif
rdp_inst->ContextNew = (pContextNew) rdp_freerdp_context_new;
rdp_inst->ContextFree = (pContextFree) rdp_freerdp_context_free;
freerdp_context_new(rdp_inst);
/* Set settings */
settings = &(guac_client_data->settings);
/* Console */
settings->console = (strcmp(argv[IDX_CONSOLE], "true") == 0);
settings->console_audio = (strcmp(argv[IDX_CONSOLE_AUDIO], "true") == 0);
/* Certificate and auth */
settings->ignore_certificate = (strcmp(argv[IDX_IGNORE_CERT], "true") == 0);
settings->disable_authentication = (strcmp(argv[IDX_DISABLE_AUTH], "true") == 0);
/* NLA security */
if (strcmp(argv[IDX_SECURITY], "nla") == 0) {
guac_client_log(client, GUAC_LOG_INFO, "Security mode: NLA");
settings->security_mode = GUAC_SECURITY_NLA;
}
/* TLS security */
else if (strcmp(argv[IDX_SECURITY], "tls") == 0) {
guac_client_log(client, GUAC_LOG_INFO, "Security mode: TLS");
settings->security_mode = GUAC_SECURITY_TLS;
}
/* RDP security */
else if (strcmp(argv[IDX_SECURITY], "rdp") == 0) {
guac_client_log(client, GUAC_LOG_INFO, "Security mode: RDP");
settings->security_mode = GUAC_SECURITY_RDP;
}
/* ANY security (allow server to choose) */
else if (strcmp(argv[IDX_SECURITY], "any") == 0) {
guac_client_log(client, GUAC_LOG_INFO, "Security mode: ANY");
settings->security_mode = GUAC_SECURITY_ANY;
}
/* If nothing given, default to RDP */
else {
guac_client_log(client, GUAC_LOG_INFO, "No security mode specified. Defaulting to RDP.");
settings->security_mode = GUAC_SECURITY_RDP;
}
/* Set hostname */
settings->hostname = strdup(argv[IDX_HOSTNAME]);
/* If port specified, use it */
settings->port = RDP_DEFAULT_PORT;
if (argv[IDX_PORT][0] != '\0')
settings->port = atoi(argv[IDX_PORT]);
guac_client_log(client, GUAC_LOG_DEBUG,
"Client resolution is %ix%i at %i DPI",
client->info.optimal_width,
client->info.optimal_height,
client->info.optimal_resolution);
/* Use suggested resolution unless overridden */
settings->resolution = guac_rdp_suggest_resolution(client);
if (argv[IDX_DPI][0] != '\0')
settings->resolution = atoi(argv[IDX_DPI]);
/* Use optimal width unless overridden */
settings->width = client->info.optimal_width
* settings->resolution
/ client->info.optimal_resolution;
if (argv[IDX_WIDTH][0] != '\0')
settings->width = atoi(argv[IDX_WIDTH]);
/* Use default width if given width is invalid. */
if (settings->width <= 0) {
settings->width = RDP_DEFAULT_WIDTH;
guac_client_log(client, GUAC_LOG_ERROR,
"Invalid width: \"%s\". Using default of %i.",
argv[IDX_WIDTH], settings->width);
}
/* Round width down to nearest multiple of 4 */
settings->width = settings->width & ~0x3;
/* Use optimal height unless overridden */
settings->height = client->info.optimal_height
* settings->resolution
/ client->info.optimal_resolution;
if (argv[IDX_HEIGHT][0] != '\0')
settings->height = atoi(argv[IDX_HEIGHT]);
/* Use default height if given height is invalid. */
if (settings->height <= 0) {
settings->height = RDP_DEFAULT_HEIGHT;
guac_client_log(client, GUAC_LOG_ERROR,
"Invalid height: \"%s\". Using default of %i.",
argv[IDX_WIDTH], settings->height);
}
guac_client_log(client, GUAC_LOG_DEBUG,
"Using resolution of %ix%i at %i DPI",
settings->width,
settings->height,
settings->resolution);
/* Domain */
settings->domain = NULL;
if (argv[IDX_DOMAIN][0] != '\0')
settings->domain = strdup(argv[IDX_DOMAIN]);
/* Username */
settings->username = NULL;
if (argv[IDX_USERNAME][0] != '\0')
settings->username = strdup(argv[IDX_USERNAME]);
/* Password */
settings->password = NULL;
if (argv[IDX_PASSWORD][0] != '\0')
settings->password = strdup(argv[IDX_PASSWORD]);
/* Client name */
settings->client_name = NULL;
if (argv[IDX_CLIENT_NAME][0] != '\0')
settings->client_name = strdup(argv[IDX_CLIENT_NAME]);
/* Initial program */
settings->initial_program = NULL;
if (argv[IDX_INITIAL_PROGRAM][0] != '\0')
settings->initial_program = strdup(argv[IDX_INITIAL_PROGRAM]);
/* RemoteApp program */
settings->remote_app = NULL;
if (argv[IDX_REMOTE_APP][0] != '\0')
settings->remote_app = strdup(argv[IDX_REMOTE_APP]);
/* RemoteApp working directory */
settings->remote_app_dir = NULL;
if (argv[IDX_REMOTE_APP_DIR][0] != '\0')
settings->remote_app_dir = strdup(argv[IDX_REMOTE_APP_DIR]);
/* RemoteApp arguments */
settings->remote_app_args = NULL;
if (argv[IDX_REMOTE_APP_ARGS][0] != '\0')
settings->remote_app_args = strdup(argv[IDX_REMOTE_APP_ARGS]);
/* Static virtual channels */
settings->svc_names = NULL;
if (argv[IDX_STATIC_CHANNELS][0] != '\0')
settings->svc_names = guac_split(argv[IDX_STATIC_CHANNELS], ',');
/* Performance flags */
settings->wallpaper_enabled = (strcmp(argv[IDX_ENABLE_WALLPAPER], "true") == 0);
settings->theming_enabled = (strcmp(argv[IDX_ENABLE_THEMING], "true") == 0);
settings->font_smoothing_enabled = (strcmp(argv[IDX_ENABLE_FONT_SMOOTHING], "true") == 0);
settings->full_window_drag_enabled = (strcmp(argv[IDX_ENABLE_FULL_WINDOW_DRAG], "true") == 0);
settings->desktop_composition_enabled = (strcmp(argv[IDX_ENABLE_DESKTOP_COMPOSITION], "true") == 0);
settings->menu_animations_enabled = (strcmp(argv[IDX_ENABLE_MENU_ANIMATIONS], "true") == 0);
/* Session color depth */
settings->color_depth = RDP_DEFAULT_DEPTH;
if (argv[IDX_COLOR_DEPTH][0] != '\0')
settings->color_depth = atoi(argv[IDX_COLOR_DEPTH]);
/* Use default depth if given depth is invalid. */
if (settings->color_depth == 0) {
settings->color_depth = RDP_DEFAULT_DEPTH;
guac_client_log(client, GUAC_LOG_ERROR,
"Invalid color-depth: \"%s\". Using default of %i.",
argv[IDX_WIDTH], settings->color_depth);
}
/* Audio enable/disable */
guac_client_data->settings.audio_enabled =
(strcmp(argv[IDX_DISABLE_AUDIO], "true") != 0);
/* Printing enable/disable */
guac_client_data->settings.printing_enabled =
(strcmp(argv[IDX_ENABLE_PRINTING], "true") == 0);
/* Drive enable/disable */
guac_client_data->settings.drive_enabled =
(strcmp(argv[IDX_ENABLE_DRIVE], "true") == 0);
guac_client_data->settings.drive_path = strdup(argv[IDX_DRIVE_PATH]);
guac_client_data->settings.create_drive_path =
(strcmp(argv[IDX_CREATE_DRIVE_PATH], "true") == 0);
/* Store client data */
guac_client_data->rdp_inst = rdp_inst;
guac_client_data->mouse_button_mask = 0;
guac_client_data->clipboard = guac_common_clipboard_alloc(GUAC_RDP_CLIPBOARD_MAX_LENGTH);
guac_client_data->requested_clipboard_format = CB_FORMAT_TEXT;
guac_client_data->audio = NULL;
guac_client_data->filesystem = NULL;
guac_client_data->available_svc = guac_common_list_alloc();
/* Main socket needs to be threadsafe */
guac_socket_require_threadsafe(client->socket);
/* Recursive attribute for locks */
pthread_mutexattr_init(&(guac_client_data->attributes));
pthread_mutexattr_settype(&(guac_client_data->attributes),
PTHREAD_MUTEX_RECURSIVE);
/* Init RDP lock */
pthread_mutex_init(&(guac_client_data->rdp_lock),
&(guac_client_data->attributes));
/* Clear keysym state mapping and keymap */
memset(guac_client_data->keysym_state, 0,
sizeof(guac_rdp_keysym_state_map));
memset(guac_client_data->keymap, 0,
sizeof(guac_rdp_static_keymap));
client->data = guac_client_data;
((rdp_freerdp_context*) rdp_inst->context)->client = client;
/* Pick keymap based on argument */
settings->server_layout = NULL;
if (argv[IDX_SERVER_LAYOUT][0] != '\0')
settings->server_layout =
guac_rdp_keymap_find(argv[IDX_SERVER_LAYOUT]);
/* If no keymap requested, use default */
if (settings->server_layout == NULL)
settings->server_layout = guac_rdp_keymap_find(GUAC_DEFAULT_KEYMAP);
/* Load keymap into client */
__guac_rdp_client_load_keymap(client, settings->server_layout);
#ifdef ENABLE_COMMON_SSH
guac_common_ssh_init(client);
/* Connect via SSH if SFTP is enabled */
if (strcmp(argv[IDX_ENABLE_SFTP], "true") == 0) {
guac_client_log(client, GUAC_LOG_DEBUG,
"Connecting via SSH for SFTP filesystem access.");
/* Parse username - use RDP username by default */
const char* sftp_username = argv[IDX_SFTP_USERNAME];
if (sftp_username[0] == '\0' && settings->username != NULL)
sftp_username = settings->username;
guac_client_data->sftp_user =
guac_common_ssh_create_user(sftp_username);
/* Import private key, if given */
if (argv[IDX_SFTP_PRIVATE_KEY][0] != '\0') {
guac_client_log(client, GUAC_LOG_DEBUG,
"Authenticating with private key.");
/* Abort if private key cannot be read */
if (guac_common_ssh_user_import_key(guac_client_data->sftp_user,
argv[IDX_SFTP_PRIVATE_KEY],
argv[IDX_SFTP_PASSPHRASE])) {
guac_common_ssh_destroy_user(guac_client_data->sftp_user);
return 1;
}
}
/* Otherwise, use specified password */
else {
guac_client_log(client, GUAC_LOG_DEBUG,
"Authenticating with password.");
/* Parse password - use RDP password by default */
const char* sftp_password = argv[IDX_SFTP_PASSWORD];
if (sftp_password[0] == '\0' && settings->password != NULL)
sftp_password = settings->password;
guac_common_ssh_user_set_password(guac_client_data->sftp_user,
sftp_password);
}
/* Parse hostname - use RDP hostname by default */
const char* sftp_hostname = argv[IDX_SFTP_HOSTNAME];
if (sftp_hostname[0] == '\0')
sftp_hostname = settings->hostname;
/* Parse port, defaulting to standard SSH port */
const char* sftp_port = argv[IDX_SFTP_PORT];
if (sftp_port[0] == '\0')
sftp_port = "22";
/* Attempt SSH connection */
guac_client_data->sftp_session =
guac_common_ssh_create_session(client, sftp_hostname, sftp_port,
guac_client_data->sftp_user);
/* Fail if SSH connection does not succeed */
if (guac_client_data->sftp_session == NULL) {
/* Already aborted within guac_common_ssh_create_session() */
guac_common_ssh_destroy_user(guac_client_data->sftp_user);
return 1;
}
/* Load and expose filesystem */
guac_client_data->sftp_filesystem =
guac_common_ssh_create_sftp_filesystem(
guac_client_data->sftp_session, "/");
/* Abort if SFTP connection fails */
if (guac_client_data->sftp_filesystem == NULL) {
guac_common_ssh_destroy_session(guac_client_data->sftp_session);
guac_common_ssh_destroy_user(guac_client_data->sftp_user);
return 1;
}
/* Configure destination for basic uploads, if specified */
if (argv[IDX_SFTP_DIRECTORY][0] != '\0') {
client->file_handler = guac_rdp_sftp_file_handler;
guac_common_ssh_sftp_set_upload_path(
guac_client_data->sftp_filesystem,
argv[IDX_SFTP_DIRECTORY]);
}
/* Otherwise, use SFTP for basic uploads only if drive not enabled */
else if (!settings->drive_enabled)
client->file_handler = guac_rdp_sftp_file_handler;
guac_client_log(client, GUAC_LOG_DEBUG,
"SFTP connection succeeded.");
}
#endif
/* Create default surface */
guac_client_data->default_surface = guac_common_surface_alloc(client->socket, GUAC_DEFAULT_LAYER,
settings->width, settings->height);
guac_client_data->current_surface = guac_client_data->default_surface;
/* Send connection name */
guac_protocol_send_name(client->socket, settings->hostname);
/* Set default pointer */
guac_common_set_pointer_cursor(client);
/* Push desired settings to FreeRDP */
guac_rdp_push_settings(settings, rdp_inst);
/* Connect to RDP server */
if (!freerdp_connect(rdp_inst)) {
guac_client_abort(client, GUAC_PROTOCOL_STATUS_UPSTREAM_ERROR, "Error connecting to RDP server");
return 1;
}
/* Success */
return 0;
}
int guac_client_init(guac_client* client, int argc, char** argv) {
rfbClient* rfb_client;
vnc_guac_client_data* guac_client_data;
int retries_remaining;
/* Set up libvncclient logging */
rfbClientLog = guac_vnc_client_log_info;
rfbClientErr = guac_vnc_client_log_error;
/*** PARSE ARGUMENTS ***/
if (argc != VNC_ARGS_COUNT) {
guac_client_abort(client, GUAC_PROTOCOL_STATUS_SERVER_ERROR, "Wrong argument count received.");
return 1;
}
/* Alloc client data */
guac_client_data = malloc(sizeof(vnc_guac_client_data));
client->data = guac_client_data;
guac_client_data->hostname = strdup(argv[IDX_HOSTNAME]);
guac_client_data->port = atoi(argv[IDX_PORT]);
guac_client_data->password = strdup(argv[IDX_PASSWORD]); /* NOTE: freed by libvncclient */
guac_client_data->default_surface = NULL;
/* Set flags */
guac_client_data->remote_cursor = (strcmp(argv[IDX_CURSOR], "remote") == 0);
guac_client_data->swap_red_blue = (strcmp(argv[IDX_SWAP_RED_BLUE], "true") == 0);
guac_client_data->read_only = (strcmp(argv[IDX_READ_ONLY], "true") == 0);
/* Parse color depth */
guac_client_data->color_depth = atoi(argv[IDX_COLOR_DEPTH]);
#ifdef ENABLE_VNC_REPEATER
/* Set repeater parameters if specified */
if (argv[IDX_DEST_HOST][0] != '\0')
guac_client_data->dest_host = strdup(argv[IDX_DEST_HOST]);
else
guac_client_data->dest_host = NULL;
if (argv[IDX_DEST_PORT][0] != '\0')
guac_client_data->dest_port = atoi(argv[IDX_DEST_PORT]);
#endif
/* Set encodings if specified */
if (argv[IDX_ENCODINGS][0] != '\0')
guac_client_data->encodings = strdup(argv[IDX_ENCODINGS]);
else
guac_client_data->encodings = NULL;
/* Parse autoretry */
if (argv[IDX_AUTORETRY][0] != '\0')
retries_remaining = atoi(argv[IDX_AUTORETRY]);
else
retries_remaining = 0;
#ifdef ENABLE_VNC_LISTEN
/* Set reverse-connection flag */
guac_client_data->reverse_connect =
(strcmp(argv[IDX_REVERSE_CONNECT], "true") == 0);
/* Parse listen timeout */
if (argv[IDX_LISTEN_TIMEOUT][0] != '\0')
guac_client_data->listen_timeout = atoi(argv[IDX_LISTEN_TIMEOUT]);
else
guac_client_data->listen_timeout = 5000;
#endif
/* Init clipboard */
guac_client_data->clipboard = guac_common_clipboard_alloc(GUAC_VNC_CLIPBOARD_MAX_LENGTH);
/* Configure clipboard encoding */
if (guac_vnc_set_clipboard_encoding(client, argv[IDX_CLIPBOARD_ENCODING]))
guac_client_log(client, GUAC_LOG_INFO,
"Using non-standard VNC clipboard encoding: '%s'.",
argv[IDX_CLIPBOARD_ENCODING]);
/* Ensure connection is kept alive during lengthy connects */
guac_socket_require_keep_alive(client->socket);
/* Attempt connection */
rfb_client = __guac_vnc_get_client(client);
/* If unsuccessful, retry as many times as specified */
while (!rfb_client && retries_remaining > 0) {
struct timespec guac_vnc_connect_interval = {
.tv_sec = GUAC_VNC_CONNECT_INTERVAL/1000,
.tv_nsec = (GUAC_VNC_CONNECT_INTERVAL%1000)*1000000
};
guac_client_log(client, GUAC_LOG_INFO,
"Connect failed. Waiting %ims before retrying...",
GUAC_VNC_CONNECT_INTERVAL);
/* Wait for given interval then retry */
nanosleep(&guac_vnc_connect_interval, NULL);
rfb_client = __guac_vnc_get_client(client);
retries_remaining--;
}
/* If the final connect attempt fails, return error */
if (!rfb_client) {
guac_client_abort(client, GUAC_PROTOCOL_STATUS_UPSTREAM_ERROR, "Unable to connect to VNC server.");
return 1;
}
#ifdef ENABLE_PULSE
guac_client_data->audio_enabled =
(strcmp(argv[IDX_ENABLE_AUDIO], "true") == 0);
/* If an encoding is available, load an audio stream */
if (guac_client_data->audio_enabled) {
guac_client_data->audio = guac_audio_stream_alloc(client, NULL);
/* Load servername if specified */
if (argv[IDX_AUDIO_SERVERNAME][0] != '\0')
guac_client_data->pa_servername =
strdup(argv[IDX_AUDIO_SERVERNAME]);
else
guac_client_data->pa_servername = NULL;
/* If successful, init audio system */
if (guac_client_data->audio != NULL) {
guac_client_log(client, GUAC_LOG_INFO,
"Audio will be encoded as %s",
guac_client_data->audio->encoder->mimetype);
/* Require threadsafe sockets if audio enabled */
guac_socket_require_threadsafe(client->socket);
/* Start audio stream */
guac_pa_start_stream(client);
}
/* Otherwise, audio loading failed */
else
guac_client_log(client, GUAC_LOG_INFO,
"No available audio encoding. Sound disabled.");
} /* end if audio enabled */
#endif
#ifdef ENABLE_COMMON_SSH
guac_common_ssh_init(client);
/* Connect via SSH if SFTP is enabled */
if (strcmp(argv[IDX_ENABLE_SFTP], "true") == 0) {
guac_client_log(client, GUAC_LOG_DEBUG,
"Connecting via SSH for SFTP filesystem access.");
guac_client_data->sftp_user =
guac_common_ssh_create_user(argv[IDX_SFTP_USERNAME]);
/* Import private key, if given */
if (argv[IDX_SFTP_PRIVATE_KEY][0] != '\0') {
guac_client_log(client, GUAC_LOG_DEBUG,
"Authenticating with private key.");
/* Abort if private key cannot be read */
if (guac_common_ssh_user_import_key(guac_client_data->sftp_user,
argv[IDX_SFTP_PRIVATE_KEY],
argv[IDX_SFTP_PASSPHRASE])) {
guac_common_ssh_destroy_user(guac_client_data->sftp_user);
return 1;
}
}
/* Otherwise, use specified password */
else {
guac_client_log(client, GUAC_LOG_DEBUG,
"Authenticating with password.");
guac_common_ssh_user_set_password(guac_client_data->sftp_user,
argv[IDX_SFTP_PASSWORD]);
}
/* Parse hostname - use VNC hostname by default */
const char* sftp_hostname = argv[IDX_SFTP_HOSTNAME];
if (sftp_hostname[0] == '\0')
sftp_hostname = guac_client_data->hostname;
/* Parse port, defaulting to standard SSH port */
const char* sftp_port = argv[IDX_SFTP_PORT];
if (sftp_port[0] == '\0')
sftp_port = "22";
/* Attempt SSH connection */
guac_client_data->sftp_session =
guac_common_ssh_create_session(client, sftp_hostname, sftp_port,
guac_client_data->sftp_user);
/* Fail if SSH connection does not succeed */
if (guac_client_data->sftp_session == NULL) {
/* Already aborted within guac_common_ssh_create_session() */
guac_common_ssh_destroy_user(guac_client_data->sftp_user);
return 1;
}
/* Load and expose filesystem */
guac_client_data->sftp_filesystem =
guac_common_ssh_create_sftp_filesystem(
guac_client_data->sftp_session, "/");
/* Abort if SFTP connection fails */
if (guac_client_data->sftp_filesystem == NULL) {
guac_common_ssh_destroy_session(guac_client_data->sftp_session);
guac_common_ssh_destroy_user(guac_client_data->sftp_user);
return 1;
}
/* Configure destination for basic uploads, if specified */
if (argv[IDX_SFTP_DIRECTORY][0] != '\0')
guac_common_ssh_sftp_set_upload_path(
guac_client_data->sftp_filesystem,
argv[IDX_SFTP_DIRECTORY]);
/* Set file handler for basic uploads */
client->file_handler = guac_vnc_sftp_file_handler;
guac_client_log(client, GUAC_LOG_DEBUG,
"SFTP connection succeeded.");
}
#endif
/* Set remaining client data */
guac_client_data->rfb_client = rfb_client;
guac_client_data->copy_rect_used = 0;
guac_client_data->cursor = guac_client_alloc_buffer(client);
/* Set handlers */
client->handle_messages = vnc_guac_client_handle_messages;
client->free_handler = vnc_guac_client_free_handler;
/* If not read-only, set input handlers and pointer */
if (guac_client_data->read_only == 0) {
/* Only handle mouse/keyboard/clipboard if not read-only */
client->mouse_handler = vnc_guac_client_mouse_handler;
client->key_handler = vnc_guac_client_key_handler;
client->clipboard_handler = guac_vnc_clipboard_handler;
/* If not read-only but cursor is remote, set a dot cursor */
if (guac_client_data->remote_cursor)
guac_common_set_dot_cursor(client);
/* Otherwise, set pointer until explicitly requested otherwise */
else
guac_common_set_pointer_cursor(client);
}
/* Send name */
guac_protocol_send_name(client->socket, rfb_client->desktopName);
/* Create default surface */
guac_client_data->default_surface = guac_common_surface_alloc(client->socket, GUAC_DEFAULT_LAYER,
rfb_client->width, rfb_client->height);
return 0;
}
int guac_client_init(guac_client* client, int argc, char** argv) {
guac_socket* socket = client->socket;
ssh_guac_client_data* client_data = malloc(sizeof(ssh_guac_client_data));
/* Init client data */
client->data = client_data;
client_data->mod_alt =
client_data->mod_ctrl =
client_data->mod_shift = 0;
client_data->clipboard = guac_common_clipboard_alloc(GUAC_SSH_CLIPBOARD_MAX_LENGTH);
client_data->term_channel = NULL;
if (argc != SSH_ARGS_COUNT) {
guac_client_abort(client, GUAC_PROTOCOL_STATUS_SERVER_ERROR, "Wrong number of arguments");
return -1;
}
/* Read parameters */
strcpy(client_data->hostname, argv[IDX_HOSTNAME]);
strcpy(client_data->username, argv[IDX_USERNAME]);
strcpy(client_data->password, argv[IDX_PASSWORD]);
/* Init public key auth information */
client_data->key = NULL;
strcpy(client_data->key_base64, argv[IDX_PRIVATE_KEY]);
strcpy(client_data->key_passphrase, argv[IDX_PASSPHRASE]);
/* Read font name */
if (argv[IDX_FONT_NAME][0] != 0)
strcpy(client_data->font_name, argv[IDX_FONT_NAME]);
else
strcpy(client_data->font_name, GUAC_SSH_DEFAULT_FONT_NAME );
/* Read font size */
if (argv[IDX_FONT_SIZE][0] != 0)
client_data->font_size = atoi(argv[IDX_FONT_SIZE]);
else
client_data->font_size = GUAC_SSH_DEFAULT_FONT_SIZE;
/* Parse SFTP enable */
client_data->enable_sftp = strcmp(argv[IDX_ENABLE_SFTP], "true") == 0;
client_data->sftp_session = NULL;
client_data->sftp_ssh_session = NULL;
strcpy(client_data->sftp_upload_path, ".");
#ifdef ENABLE_SSH_AGENT
client_data->enable_agent = strcmp(argv[IDX_ENABLE_AGENT], "true") == 0;
#endif
/* Read port */
if (argv[IDX_PORT][0] != 0)
strcpy(client_data->port, argv[IDX_PORT]);
else
strcpy(client_data->port, GUAC_SSH_DEFAULT_PORT);
/* Create terminal */
client_data->term = guac_terminal_create(client,
client_data->font_name, client_data->font_size,
client->info.optimal_resolution,
client->info.optimal_width, client->info.optimal_height);
/* Fail if terminal init failed */
if (client_data->term == NULL) {
guac_client_abort(client, GUAC_PROTOCOL_STATUS_SERVER_ERROR, "Terminal initialization failed");
return -1;
}
/* Set up I-bar pointer */
client_data->ibar_cursor = guac_ssh_create_ibar(client);
/* Set up blank pointer */
client_data->blank_cursor = guac_ssh_create_blank(client);
/* Send initial name */
guac_protocol_send_name(socket, client_data->hostname);
/* Initialize pointer */
client_data->current_cursor = client_data->blank_cursor;
guac_ssh_set_cursor(client, client_data->current_cursor);
guac_socket_flush(socket);
/* Set basic handlers */
client->handle_messages = ssh_guac_client_handle_messages;
client->clipboard_handler = ssh_guac_client_clipboard_handler;
client->key_handler = ssh_guac_client_key_handler;
client->mouse_handler = ssh_guac_client_mouse_handler;
client->size_handler = ssh_guac_client_size_handler;
client->free_handler = ssh_guac_client_free_handler;
/* Start client thread */
if (pthread_create(&(client_data->client_thread), NULL, ssh_client_thread, (void*) client)) {
guac_client_abort(client, GUAC_PROTOCOL_STATUS_SERVER_ERROR, "Unable to start SSH client thread");
return -1;
}
/* Success */
return 0;
}