2 /* ***** BEGIN LICENSE BLOCK *****
3 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
5 * The contents of this file are subject to the Mozilla Public License Version
6 * 1.1 (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 * http://www.mozilla.org/MPL/
10 * Software distributed under the License is distributed on an "AS IS" basis,
11 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 * for the specific language governing rights and limitations under the
15 * The Original Code is libguac-client-rdp.
17 * The Initial Developer of the Original Code is
19 * Portions created by the Initial Developer are Copyright (C) 2011
20 * the Initial Developer. All Rights Reserved.
25 * Alternatively, the contents of this file may be used under the terms of
26 * either the GNU General Public License Version 2 or later (the "GPL"), or
27 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
28 * in which case the provisions of the GPL or the LGPL are applicable instead
29 * of those above. If you wish to allow use of your version of this file only
30 * under the terms of either the GPL or the LGPL, and not to allow others to
31 * use your version of this file under the terms of the MPL, indicate your
32 * decision by deleting the provisions above and replace them with the notice
33 * and other provisions required by the GPL or the LGPL. If you do not delete
34 * the provisions above, a recipient may use your version of this file under
35 * the terms of any one of the MPL, the GPL or the LGPL.
37 * ***** END LICENSE BLOCK ***** */
42 #include <sys/select.h>
45 #include <freerdp/freerdp.h>
46 #include <freerdp/channels/channels.h>
47 #include <freerdp/input.h>
48 #include <freerdp/codec/color.h>
49 #include <freerdp/cache/cache.h>
51 #include <guacamole/socket.h>
52 #include <guacamole/protocol.h>
53 #include <guacamole/client.h>
54 #include <guacamole/error.h>
57 #include "rdp_keymap.h"
58 #include "guac_handlers.h"
60 void __guac_rdp_update_keysyms(guac_client* client, const int* keysym_string, int from, int to);
61 int __guac_rdp_send_keysym(guac_client* client, int keysym, int pressed);
62 void __guac_rdp_send_altcode(guac_client* client, int altcode);
65 int rdp_guac_client_free_handler(guac_client* client) {
67 rdp_guac_client_data* guac_client_data =
68 (rdp_guac_client_data*) client->data;
70 freerdp* rdp_inst = guac_client_data->rdp_inst;
71 rdpChannels* channels = rdp_inst->context->channels;
73 /* Clean up RDP client */
74 freerdp_channels_close(channels, rdp_inst);
75 freerdp_channels_free(channels);
76 freerdp_disconnect(rdp_inst);
77 freerdp_clrconv_free(((rdp_freerdp_context*) rdp_inst->context)->clrconv);
78 cache_free(rdp_inst->context->cache);
79 freerdp_free(rdp_inst);
81 /* Free client data */
82 free(guac_client_data);
88 int rdp_guac_client_handle_messages(guac_client* client) {
90 rdp_guac_client_data* guac_client_data = (rdp_guac_client_data*) client->data;
91 freerdp* rdp_inst = guac_client_data->rdp_inst;
92 rdpChannels* channels = rdp_inst->context->channels;
102 struct timeval timeout = {
108 if (!freerdp_get_fds(rdp_inst, read_fds, &read_count, write_fds, &write_count)) {
109 guac_error = GUAC_STATUS_BAD_STATE;
110 guac_error_message = "Unable to read RDP file descriptors";
114 /* get channel fds */
115 if (!freerdp_channels_get_fds(channels, rdp_inst, read_fds, &read_count, write_fds, &write_count)) {
116 guac_error = GUAC_STATUS_BAD_STATE;
117 guac_error_message = "Unable to read RDP channel file descriptors";
121 /* Construct read fd_set */
124 for (index = 0; index < read_count; index++) {
125 fd = (int)(long) (read_fds[index]);
131 /* Construct write fd_set */
133 for (index = 0; index < write_count; index++) {
134 fd = (int)(long) (write_fds[index]);
140 /* If no file descriptors, error */
142 guac_error = GUAC_STATUS_BAD_STATE;
143 guac_error_message = "No file descriptors";
147 /* Otherwise, wait for file descriptors given */
148 if (select(max_fd + 1, &rfds, &wfds, NULL, &timeout) == -1) {
149 /* these are not really errors */
150 if (!((errno == EAGAIN) ||
151 (errno == EWOULDBLOCK) ||
152 (errno == EINPROGRESS) ||
153 (errno == EINTR))) /* signal occurred */
155 guac_error = GUAC_STATUS_SEE_ERRNO;
156 guac_error_message = "Error waiting for file descriptor";
161 /* Check the libfreerdp fds */
162 if (!freerdp_check_fds(rdp_inst)) {
163 guac_error = GUAC_STATUS_BAD_STATE;
164 guac_error_message = "Error handling RDP file descriptors";
168 /* Check channel fds */
169 if (!freerdp_channels_check_fds(channels, rdp_inst)) {
170 guac_error = GUAC_STATUS_BAD_STATE;
171 guac_error_message = "Error handling RDP channel file descriptors";
175 /* Handle RDP disconnect */
176 if (freerdp_shall_disconnect(rdp_inst)) {
177 guac_error = GUAC_STATUS_NO_INPUT;
178 guac_error_message = "RDP server closed connection";
187 int rdp_guac_client_mouse_handler(guac_client* client, int x, int y, int mask) {
189 rdp_guac_client_data* guac_client_data = (rdp_guac_client_data*) client->data;
190 freerdp* rdp_inst = guac_client_data->rdp_inst;
192 /* If button mask unchanged, just send move event */
193 if (mask == guac_client_data->mouse_button_mask)
194 rdp_inst->input->MouseEvent(rdp_inst->input, PTR_FLAGS_MOVE, x, y);
196 /* Otherwise, send events describing button change */
199 /* Mouse buttons which have JUST become released */
200 int released_mask = guac_client_data->mouse_button_mask & ~mask;
202 /* Mouse buttons which have JUST become pressed */
203 int pressed_mask = ~guac_client_data->mouse_button_mask & mask;
206 if (released_mask & 0x07) {
208 /* Calculate flags */
210 if (released_mask & 0x01) flags |= PTR_FLAGS_BUTTON1;
211 if (released_mask & 0x02) flags |= PTR_FLAGS_BUTTON3;
212 if (released_mask & 0x04) flags |= PTR_FLAGS_BUTTON2;
214 rdp_inst->input->MouseEvent(rdp_inst->input, flags, x, y);
219 if (pressed_mask & 0x07) {
221 /* Calculate flags */
222 int flags = PTR_FLAGS_DOWN;
223 if (pressed_mask & 0x01) flags |= PTR_FLAGS_BUTTON1;
224 if (pressed_mask & 0x02) flags |= PTR_FLAGS_BUTTON3;
225 if (pressed_mask & 0x04) flags |= PTR_FLAGS_BUTTON2;
226 if (pressed_mask & 0x08) flags |= PTR_FLAGS_WHEEL | 0x78;
227 if (pressed_mask & 0x10) flags |= PTR_FLAGS_WHEEL | PTR_FLAGS_WHEEL_NEGATIVE | 0x88;
230 rdp_inst->input->MouseEvent(rdp_inst->input, flags, x, y);
235 if (pressed_mask & 0x18) {
238 if (pressed_mask & 0x08)
239 rdp_inst->input->MouseEvent(
241 PTR_FLAGS_WHEEL | 0x78,
245 if (pressed_mask & 0x10)
246 rdp_inst->input->MouseEvent(
248 PTR_FLAGS_WHEEL | PTR_FLAGS_WHEEL_NEGATIVE | 0x88,
254 guac_client_data->mouse_button_mask = mask;
260 void __guac_rdp_send_altcode(guac_client* client, int altcode) {
262 rdp_guac_client_data* guac_client_data = (rdp_guac_client_data*) client->data;
263 freerdp* rdp_inst = guac_client_data->rdp_inst;
266 /* Lookup scancode for Alt */
267 int alt = GUAC_RDP_KEYSYM_LOOKUP(
268 guac_client_data->keymap,
269 0xFFE9 /* Alt_L */).scancode;
271 /* Release all pressed modifiers */
272 __guac_rdp_update_keysyms(client, GUAC_KEYSYMS_ALL_MODIFIERS, 1, 0);
275 rdp_inst->input->KeyboardEvent(rdp_inst->input, KBD_FLAGS_DOWN, alt);
277 /* For each character in four-digit Alt-code ... */
278 for (i=0; i<4; i++) {
280 /* Get scancode of keypad digit */
281 int scancode = GUAC_RDP_KEYSYM_LOOKUP(
282 guac_client_data->keymap,
283 0xFFB0 + (altcode / 1000)
286 /* Press and release digit */
287 rdp_inst->input->KeyboardEvent(rdp_inst->input, KBD_FLAGS_DOWN, scancode);
288 rdp_inst->input->KeyboardEvent(rdp_inst->input, KBD_FLAGS_RELEASE, scancode);
290 /* Shift digits left by one place */
291 altcode = (altcode * 10) % 10000;
296 rdp_inst->input->KeyboardEvent(rdp_inst->input, KBD_FLAGS_RELEASE, alt);
298 /* Press all originally pressed modifiers */
299 __guac_rdp_update_keysyms(client, GUAC_KEYSYMS_ALL_MODIFIERS, 1, 1);
303 int __guac_rdp_send_keysym(guac_client* client, int keysym, int pressed) {
305 rdp_guac_client_data* guac_client_data = (rdp_guac_client_data*) client->data;
306 freerdp* rdp_inst = guac_client_data->rdp_inst;
308 /* If keysym can be in lookup table */
309 if (keysym <= 0xFFFF) {
311 /* Look up scancode mapping */
312 const guac_rdp_keysym_desc* keysym_desc =
313 &GUAC_RDP_KEYSYM_LOOKUP(guac_client_data->keymap, keysym);
315 /* If defined, send event */
316 if (keysym_desc->scancode != 0) {
318 /* If defined, send any prerequesite keys that must be set */
319 if (keysym_desc->set_keysyms != NULL)
320 __guac_rdp_update_keysyms(client, keysym_desc->set_keysyms, 0, 1);
322 /* If defined, release any keys that must be cleared */
323 if (keysym_desc->clear_keysyms != NULL)
324 __guac_rdp_update_keysyms(client, keysym_desc->clear_keysyms, 1, 0);
326 /* Send actual key */
327 rdp_inst->input->KeyboardEvent(
330 | (pressed ? KBD_FLAGS_DOWN : KBD_FLAGS_RELEASE),
331 keysym_desc->scancode);
333 /* If defined, release any keys that were originally released */
334 if (keysym_desc->set_keysyms != NULL)
335 __guac_rdp_update_keysyms(client, keysym_desc->set_keysyms, 0, 0);
337 /* If defined, send any keys that were originally set */
338 if (keysym_desc->clear_keysyms != NULL)
339 __guac_rdp_update_keysyms(client, keysym_desc->clear_keysyms, 1, 1);
343 /* If undefined but has Alt-code, use Alt-Code */
344 else if (keysym <= 0xFF) {
346 /* NOTE: The Alt-codes are conveniently identical to keysyms. */
348 /* Only send Alt-code on press */
350 __guac_rdp_send_altcode(client, keysym);
354 /* If no defined Alt-code, log warning */
356 guac_client_log_info(client, "unmapped keysym: 0x%x", keysym);
363 void __guac_rdp_update_keysyms(guac_client* client, const int* keysym_string, int from, int to) {
365 rdp_guac_client_data* guac_client_data = (rdp_guac_client_data*) client->data;
368 /* Send all keysyms in string, NULL terminated */
369 while ((keysym = *keysym_string) != 0) {
371 /* Get current keysym state */
372 int current_state = GUAC_RDP_KEYSYM_LOOKUP(guac_client_data->keysym_state, keysym);
374 /* If key is currently in given state, send event for changing it to specified "to" state */
375 if (current_state == from)
376 __guac_rdp_send_keysym(client, *keysym_string, to);
385 int rdp_guac_client_key_handler(guac_client* client, int keysym, int pressed) {
387 rdp_guac_client_data* guac_client_data = (rdp_guac_client_data*) client->data;
389 /* Update keysym state */
390 GUAC_RDP_KEYSYM_LOOKUP(guac_client_data->keysym_state, keysym) = pressed;
392 return __guac_rdp_send_keysym(client, keysym, pressed);