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guacamole-spice-protocol/protocols/rdp/src/rdp_client.c

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/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is libguac-client-rdp.
*
* The Initial Developer of the Original Code is
* Michael Jumper.
* Portions created by the Initial Developer are Copyright (C) 2011
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include <stdlib.h>
#include <string.h>
#include <sys/select.h>
#include <errno.h>
#include <freerdp/freerdp.h>
#include <freerdp/chanman.h>
#include <freerdp/constants_ui.h>
#include <guacamole/log.h>
#include <guacamole/guacio.h>
#include <guacamole/protocol.h>
#include <guacamole/client.h>
#include "rdp_handlers.h"
#include "rdp_client.h"
/* Client plugin arguments */
const char* GUAC_CLIENT_ARGS[] = {
"hostname",
"port",
NULL
};
int rdp_guac_client_free_handler(guac_client* client) {
rdp_guac_client_data* guac_client_data = (rdp_guac_client_data*) client->data;
/* Disconnect client */
guac_client_data->rdp_inst->rdp_disconnect(guac_client_data->rdp_inst);
/* Free RDP client */
freerdp_free(guac_client_data->rdp_inst);
freerdp_chanman_free(guac_client_data->chanman);
free(guac_client_data->settings);
/* Free guac client data */
free(guac_client_data);
return 0;
}
int rdp_guac_client_handle_messages(guac_client* client) {
rdp_guac_client_data* guac_client_data = (rdp_guac_client_data*) client->data;
rdpInst* rdp_inst = guac_client_data->rdp_inst;
rdpChanMan* chanman = guac_client_data->chanman;
int index;
int max_fd, fd;
void* read_fds[32];
void* write_fds[32];
int read_count = 0;
int write_count = 0;
fd_set rfds, wfds;
/* get rdp fds */
if (rdp_inst->rdp_get_fds(rdp_inst, read_fds, &read_count, write_fds, &write_count) != 0) {
guac_log_error("Unable to read RDP file descriptors.");
return 1;
}
/* get channel fds */
if (freerdp_chanman_get_fds(chanman, rdp_inst, read_fds, &read_count, write_fds, &write_count) != 0) {
guac_log_error("Unable to read RDP channel file descriptors.");
return 1;
}
/* Construct read fd_set */
max_fd = 0;
FD_ZERO(&rfds);
for (index = 0; index < read_count; index++) {
fd = (int)(long) (read_fds[index]);
if (fd > max_fd)
max_fd = fd;
FD_SET(fd, &rfds);
}
/* Construct write fd_set */
FD_ZERO(&wfds);
for (index = 0; index < write_count; index++) {
fd = (int)(long) (write_fds[index]);
if (fd > max_fd)
max_fd = fd;
FD_SET(fd, &wfds);
}
/* If no file descriptors, error */
if (max_fd == 0) {
guac_log_error("No file descriptors");
return 1;
}
/* Otherwise, wait for file descriptors given */
if (select(max_fd + 1, &rfds, &wfds, NULL, NULL) == -1) {
/* these are not really errors */
if (!((errno == EAGAIN) ||
(errno == EWOULDBLOCK) ||
(errno == EINPROGRESS) ||
(errno == EINTR))) /* signal occurred */
{
guac_log_error("Error waiting for file descriptor.");
return 1;
}
}
/* check the libfreerdp fds */
if (rdp_inst->rdp_check_fds(rdp_inst) != 0) {
guac_log_error("Error handling RDP file descriptors.");
return 1;
}
/* check channel fds */
if (freerdp_chanman_check_fds(chanman, rdp_inst) != 0) {
guac_log_error("Error handling RDP channel file descriptors.");
return 1;
}
/* Success */
return 0;
}
int guac_client_init(guac_client* client, int argc, char** argv) {
rdp_guac_client_data* guac_client_data;
rdpInst* rdp_inst;
rdpChanMan* chanman;
rdpSet* settings;
char* hostname;
int port = RDP_DEFAULT_PORT;
if (argc < 2) {
guac_send_error(client->io, "Wrong argument count received.");
guac_flush(client->io);
return 1;
}
/* If port specified, use it */
if (argv[1][0] != '\0')
port = atoi(argv[1]);
hostname = argv[0];
/* Allocate client data */
guac_client_data = malloc(sizeof(rdp_guac_client_data));
/* Get channel manager */
chanman = freerdp_chanman_new();
guac_client_data->chanman = chanman;
/* INIT SETTINGS */
settings = malloc(sizeof(rdpSet));
memset(settings, 0, sizeof(rdpSet));
guac_client_data->settings = settings;
/* Set hostname */
strncpy(settings->hostname, hostname, sizeof(settings->hostname) - 1);
/* Default size */
settings->width = 1024;
settings->height = 768;
strncpy(settings->server, hostname, sizeof(settings->server));
strcpy(settings->username, "guest");
settings->tcp_port_rdp = port;
settings->encryption = 1;
settings->server_depth = 16;
settings->bitmap_cache = 1;
settings->bitmap_compression = 1;
settings->desktop_save = 0;
settings->performanceflags =
PERF_DISABLE_WALLPAPER
| PERF_DISABLE_FULLWINDOWDRAG
| PERF_DISABLE_MENUANIMATIONS;
settings->off_screen_bitmaps = 1;
settings->triblt = 0;
settings->new_cursors = 1;
settings->rdp_version = 5;
/* Init client */
rdp_inst = freerdp_new(settings);
if (rdp_inst == NULL) {
guac_send_error(client->io, "Error initializing RDP client");
guac_flush(client->io);
return 1;
}
guac_client_data->rdp_inst = rdp_inst;
guac_client_data->mouse_button_mask = 0;
/* Store client data */
rdp_inst->param1 = client;
client->data = guac_client_data;
/* RDP handlers */
rdp_inst->ui_error = guac_rdp_ui_error;
rdp_inst->ui_warning = guac_rdp_ui_warning;
rdp_inst->ui_unimpl = guac_rdp_ui_unimpl;
rdp_inst->ui_begin_update = guac_rdp_ui_begin_update;
rdp_inst->ui_end_update = guac_rdp_ui_end_update;
rdp_inst->ui_desktop_save = guac_rdp_ui_desktop_save;
rdp_inst->ui_desktop_restore = guac_rdp_ui_desktop_restore;
rdp_inst->ui_create_bitmap = guac_rdp_ui_create_bitmap;
rdp_inst->ui_paint_bitmap = guac_rdp_ui_paint_bitmap;
rdp_inst->ui_destroy_bitmap = guac_rdp_ui_destroy_bitmap;
rdp_inst->ui_line = guac_rdp_ui_line;
rdp_inst->ui_rect = guac_rdp_ui_rect;
rdp_inst->ui_polygon = guac_rdp_ui_polygon;
rdp_inst->ui_polyline = guac_rdp_ui_polyline;
rdp_inst->ui_ellipse = guac_rdp_ui_ellipse;
rdp_inst->ui_start_draw_glyphs = guac_rdp_ui_start_draw_glyphs;
rdp_inst->ui_draw_glyph = guac_rdp_ui_draw_glyph;
rdp_inst->ui_end_draw_glyphs = guac_rdp_ui_end_draw_glyphs;
rdp_inst->ui_get_toggle_keys_state = guac_rdp_ui_get_toggle_keys_state;
rdp_inst->ui_bell = guac_rdp_ui_bell;
rdp_inst->ui_destblt = guac_rdp_ui_destblt;
rdp_inst->ui_patblt = guac_rdp_ui_patblt;
rdp_inst->ui_screenblt = guac_rdp_ui_screenblt;
rdp_inst->ui_memblt = guac_rdp_ui_memblt;
rdp_inst->ui_triblt = guac_rdp_ui_triblt;
rdp_inst->ui_create_glyph = guac_rdp_ui_create_glyph;
rdp_inst->ui_destroy_glyph = guac_rdp_ui_destroy_glyph;
rdp_inst->ui_select = guac_rdp_ui_select;
rdp_inst->ui_set_clip = guac_rdp_ui_set_clip;
rdp_inst->ui_reset_clip = guac_rdp_ui_reset_clip;
rdp_inst->ui_resize_window = guac_rdp_ui_resize_window;
rdp_inst->ui_set_cursor = guac_rdp_ui_set_cursor;
rdp_inst->ui_destroy_cursor = guac_rdp_ui_destroy_cursor;
rdp_inst->ui_create_cursor = guac_rdp_ui_create_cursor;
rdp_inst->ui_set_null_cursor = guac_rdp_ui_set_null_cursor;
rdp_inst->ui_set_default_cursor = guac_rdp_ui_set_default_cursor;
rdp_inst->ui_create_colormap = guac_rdp_ui_create_colormap;
rdp_inst->ui_move_pointer = guac_rdp_ui_move_pointer;
rdp_inst->ui_set_colormap = guac_rdp_ui_set_colormap;
rdp_inst->ui_create_surface = guac_rdp_ui_create_surface;
rdp_inst->ui_set_surface = guac_rdp_ui_set_surface;
rdp_inst->ui_destroy_surface = guac_rdp_ui_destroy_surface;
rdp_inst->ui_channel_data = guac_rdp_ui_channel_data;
/* Init chanman (pre-connect) */
if (freerdp_chanman_pre_connect(chanman, rdp_inst)) {
guac_send_error(client->io, "Error initializing RDP client channel manager");
guac_flush(client->io);
return 1;
}
/* Connect to RDP server */
if (rdp_inst->rdp_connect(rdp_inst)) {
guac_send_error(client->io, "Error connecting to RDP server");
guac_flush(client->io);
return 1;
}
/* Init chanman (post-connect) */
if (freerdp_chanman_post_connect(chanman, rdp_inst)) {
guac_send_error(client->io, "Error initializing RDP client channel manager");
guac_flush(client->io);
return 1;
}
/* Client handlers */
client->free_handler = rdp_guac_client_free_handler;
client->handle_messages = rdp_guac_client_handle_messages;
client->mouse_handler = rdp_guac_client_mouse_handler;
/* Success */
return 0;
}
int rdp_guac_client_mouse_handler(guac_client* client, int x, int y, int mask) {
rdp_guac_client_data* guac_client_data = (rdp_guac_client_data*) client->data;
rdpInst* rdp_inst = guac_client_data->rdp_inst;
/* If no buttons pressed */
if (mask == 0) {
/* Send mouse move event if no buttons pressed before */
if (guac_client_data->mouse_button_mask == 0)
rdp_inst->rdp_send_input(rdp_inst, RDP_INPUT_MOUSE, PTRFLAGS_MOVE, x, y);
/* Otherwise, send mouse up event, releasing any old buttons */
else
rdp_inst->rdp_send_input(rdp_inst, RDP_INPUT_MOUSE, PTRFLAGS_BUTTON1, x, y);
}
/* Otherwise, send mouse down event */
else
rdp_inst->rdp_send_input(rdp_inst, RDP_INPUT_MOUSE, PTRFLAGS_DOWN | PTRFLAGS_BUTTON1, x, y);
guac_client_data->mouse_button_mask = mask;
return 0;
}
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