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>
50 #include <freerdp/utils/event.h>
51 #include <freerdp/plugins/cliprdr.h>
53 #include <guacamole/socket.h>
54 #include <guacamole/protocol.h>
55 #include <guacamole/client.h>
56 #include <guacamole/error.h>
59 #include "rdp_keymap.h"
60 #include "rdp_cliprdr.h"
61 #include "guac_handlers.h"
63 void __guac_rdp_update_keysyms(guac_client* client, const int* keysym_string, int from, int to);
64 int __guac_rdp_send_keysym(guac_client* client, int keysym, int pressed);
65 void __guac_rdp_send_altcode(guac_client* client, int altcode);
68 int rdp_guac_client_free_handler(guac_client* client) {
70 rdp_guac_client_data* guac_client_data =
71 (rdp_guac_client_data*) client->data;
73 freerdp* rdp_inst = guac_client_data->rdp_inst;
74 rdpChannels* channels = rdp_inst->context->channels;
76 /* Clean up RDP client */
77 freerdp_channels_close(channels, rdp_inst);
78 freerdp_channels_free(channels);
79 freerdp_disconnect(rdp_inst);
80 freerdp_clrconv_free(((rdp_freerdp_context*) rdp_inst->context)->clrconv);
81 cache_free(rdp_inst->context->cache);
82 freerdp_free(rdp_inst);
84 /* Free client data */
85 free(guac_client_data);
91 int rdp_guac_client_handle_messages(guac_client* client) {
93 rdp_guac_client_data* guac_client_data = (rdp_guac_client_data*) client->data;
94 freerdp* rdp_inst = guac_client_data->rdp_inst;
95 rdpChannels* channels = rdp_inst->context->channels;
106 struct timeval timeout = {
112 if (!freerdp_get_fds(rdp_inst, read_fds, &read_count, write_fds, &write_count)) {
113 guac_error = GUAC_STATUS_BAD_STATE;
114 guac_error_message = "Unable to read RDP file descriptors";
118 /* get channel fds */
119 if (!freerdp_channels_get_fds(channels, rdp_inst, read_fds, &read_count, write_fds, &write_count)) {
120 guac_error = GUAC_STATUS_BAD_STATE;
121 guac_error_message = "Unable to read RDP channel file descriptors";
125 /* Construct read fd_set */
128 for (index = 0; index < read_count; index++) {
129 fd = (int)(long) (read_fds[index]);
135 /* Construct write fd_set */
137 for (index = 0; index < write_count; index++) {
138 fd = (int)(long) (write_fds[index]);
144 /* If no file descriptors, error */
146 guac_error = GUAC_STATUS_BAD_STATE;
147 guac_error_message = "No file descriptors";
151 /* Otherwise, wait for file descriptors given */
152 if (select(max_fd + 1, &rfds, &wfds, NULL, &timeout) == -1) {
153 /* these are not really errors */
154 if (!((errno == EAGAIN) ||
155 (errno == EWOULDBLOCK) ||
156 (errno == EINPROGRESS) ||
157 (errno == EINTR))) /* signal occurred */
159 guac_error = GUAC_STATUS_SEE_ERRNO;
160 guac_error_message = "Error waiting for file descriptor";
165 /* Check the libfreerdp fds */
166 if (!freerdp_check_fds(rdp_inst)) {
167 guac_error = GUAC_STATUS_BAD_STATE;
168 guac_error_message = "Error handling RDP file descriptors";
172 /* Check channel fds */
173 if (!freerdp_channels_check_fds(channels, rdp_inst)) {
174 guac_error = GUAC_STATUS_BAD_STATE;
175 guac_error_message = "Error handling RDP channel file descriptors";
179 /* Check for channel events */
180 event = freerdp_channels_pop_event(channels);
183 /* Handle clipboard events */
184 if (event->event_class == RDP_EVENT_CLASS_CLIPRDR)
185 guac_rdp_process_cliprdr_event(client, event);
187 freerdp_event_free(event);
191 /* Handle RDP disconnect */
192 if (freerdp_shall_disconnect(rdp_inst)) {
193 guac_error = GUAC_STATUS_NO_INPUT;
194 guac_error_message = "RDP server closed connection";
203 int rdp_guac_client_mouse_handler(guac_client* client, int x, int y, int mask) {
205 rdp_guac_client_data* guac_client_data = (rdp_guac_client_data*) client->data;
206 freerdp* rdp_inst = guac_client_data->rdp_inst;
208 /* If button mask unchanged, just send move event */
209 if (mask == guac_client_data->mouse_button_mask)
210 rdp_inst->input->MouseEvent(rdp_inst->input, PTR_FLAGS_MOVE, x, y);
212 /* Otherwise, send events describing button change */
215 /* Mouse buttons which have JUST become released */
216 int released_mask = guac_client_data->mouse_button_mask & ~mask;
218 /* Mouse buttons which have JUST become pressed */
219 int pressed_mask = ~guac_client_data->mouse_button_mask & mask;
222 if (released_mask & 0x07) {
224 /* Calculate flags */
226 if (released_mask & 0x01) flags |= PTR_FLAGS_BUTTON1;
227 if (released_mask & 0x02) flags |= PTR_FLAGS_BUTTON3;
228 if (released_mask & 0x04) flags |= PTR_FLAGS_BUTTON2;
230 rdp_inst->input->MouseEvent(rdp_inst->input, flags, x, y);
235 if (pressed_mask & 0x07) {
237 /* Calculate flags */
238 int flags = PTR_FLAGS_DOWN;
239 if (pressed_mask & 0x01) flags |= PTR_FLAGS_BUTTON1;
240 if (pressed_mask & 0x02) flags |= PTR_FLAGS_BUTTON3;
241 if (pressed_mask & 0x04) flags |= PTR_FLAGS_BUTTON2;
242 if (pressed_mask & 0x08) flags |= PTR_FLAGS_WHEEL | 0x78;
243 if (pressed_mask & 0x10) flags |= PTR_FLAGS_WHEEL | PTR_FLAGS_WHEEL_NEGATIVE | 0x88;
246 rdp_inst->input->MouseEvent(rdp_inst->input, flags, x, y);
251 if (pressed_mask & 0x18) {
254 if (pressed_mask & 0x08)
255 rdp_inst->input->MouseEvent(
257 PTR_FLAGS_WHEEL | 0x78,
261 if (pressed_mask & 0x10)
262 rdp_inst->input->MouseEvent(
264 PTR_FLAGS_WHEEL | PTR_FLAGS_WHEEL_NEGATIVE | 0x88,
270 guac_client_data->mouse_button_mask = mask;
276 void __guac_rdp_send_altcode(guac_client* client, int altcode) {
278 rdp_guac_client_data* guac_client_data = (rdp_guac_client_data*) client->data;
279 freerdp* rdp_inst = guac_client_data->rdp_inst;
282 /* Lookup scancode for Alt */
283 int alt = GUAC_RDP_KEYSYM_LOOKUP(
284 guac_client_data->keymap,
285 0xFFE9 /* Alt_L */).scancode;
287 /* Release all pressed modifiers */
288 __guac_rdp_update_keysyms(client, GUAC_KEYSYMS_ALL_MODIFIERS, 1, 0);
291 rdp_inst->input->KeyboardEvent(rdp_inst->input, KBD_FLAGS_DOWN, alt);
293 /* For each character in four-digit Alt-code ... */
294 for (i=0; i<4; i++) {
296 /* Get scancode of keypad digit */
297 int scancode = GUAC_RDP_KEYSYM_LOOKUP(
298 guac_client_data->keymap,
299 0xFFB0 + (altcode / 1000)
302 /* Press and release digit */
303 rdp_inst->input->KeyboardEvent(rdp_inst->input, KBD_FLAGS_DOWN, scancode);
304 rdp_inst->input->KeyboardEvent(rdp_inst->input, KBD_FLAGS_RELEASE, scancode);
306 /* Shift digits left by one place */
307 altcode = (altcode * 10) % 10000;
312 rdp_inst->input->KeyboardEvent(rdp_inst->input, KBD_FLAGS_RELEASE, alt);
314 /* Press all originally pressed modifiers */
315 __guac_rdp_update_keysyms(client, GUAC_KEYSYMS_ALL_MODIFIERS, 1, 1);
319 int __guac_rdp_send_keysym(guac_client* client, int keysym, int pressed) {
321 rdp_guac_client_data* guac_client_data = (rdp_guac_client_data*) client->data;
322 freerdp* rdp_inst = guac_client_data->rdp_inst;
324 /* If keysym can be in lookup table */
325 if (keysym <= 0xFFFF) {
327 /* Look up scancode mapping */
328 const guac_rdp_keysym_desc* keysym_desc =
329 &GUAC_RDP_KEYSYM_LOOKUP(guac_client_data->keymap, keysym);
331 /* If defined, send event */
332 if (keysym_desc->scancode != 0) {
334 /* If defined, send any prerequesite keys that must be set */
335 if (keysym_desc->set_keysyms != NULL)
336 __guac_rdp_update_keysyms(client, keysym_desc->set_keysyms, 0, 1);
338 /* If defined, release any keys that must be cleared */
339 if (keysym_desc->clear_keysyms != NULL)
340 __guac_rdp_update_keysyms(client, keysym_desc->clear_keysyms, 1, 0);
342 /* Send actual key */
343 rdp_inst->input->KeyboardEvent(
346 | (pressed ? KBD_FLAGS_DOWN : KBD_FLAGS_RELEASE),
347 keysym_desc->scancode);
349 /* If defined, release any keys that were originally released */
350 if (keysym_desc->set_keysyms != NULL)
351 __guac_rdp_update_keysyms(client, keysym_desc->set_keysyms, 0, 0);
353 /* If defined, send any keys that were originally set */
354 if (keysym_desc->clear_keysyms != NULL)
355 __guac_rdp_update_keysyms(client, keysym_desc->clear_keysyms, 1, 1);
359 /* If undefined but has Alt-code, use Alt-Code */
360 else if (keysym <= 0xFF) {
362 /* NOTE: The Alt-codes are conveniently identical to keysyms. */
364 /* Only send Alt-code on press */
366 __guac_rdp_send_altcode(client, keysym);
370 /* If no defined Alt-code, log warning */
372 guac_client_log_info(client, "unmapped keysym: 0x%x", keysym);
379 void __guac_rdp_update_keysyms(guac_client* client, const int* keysym_string, int from, int to) {
381 rdp_guac_client_data* guac_client_data = (rdp_guac_client_data*) client->data;
384 /* Send all keysyms in string, NULL terminated */
385 while ((keysym = *keysym_string) != 0) {
387 /* Get current keysym state */
388 int current_state = GUAC_RDP_KEYSYM_LOOKUP(guac_client_data->keysym_state, keysym);
390 /* If key is currently in given state, send event for changing it to specified "to" state */
391 if (current_state == from)
392 __guac_rdp_send_keysym(client, *keysym_string, to);
401 int rdp_guac_client_key_handler(guac_client* client, int keysym, int pressed) {
403 rdp_guac_client_data* guac_client_data = (rdp_guac_client_data*) client->data;
405 /* Update keysym state */
406 GUAC_RDP_KEYSYM_LOOKUP(guac_client_data->keysym_state, keysym) = pressed;
408 return __guac_rdp_send_keysym(client, keysym, pressed);
412 int rdp_guac_client_clipboard_handler(guac_client* client, char* data) {
414 rdpChannels* channels =
415 ((rdp_guac_client_data*) client->data)->rdp_inst->context->channels;
417 RDP_CB_FORMAT_LIST_EVENT* format_list =
418 (RDP_CB_FORMAT_LIST_EVENT*) freerdp_event_new(
419 RDP_EVENT_CLASS_CLIPRDR,
420 RDP_EVENT_TYPE_CB_FORMAT_LIST,
423 /* Free existing data */
424 free(((rdp_guac_client_data*) client->data)->clipboard);
426 /* Store data in client */
427 ((rdp_guac_client_data*) client->data)->clipboard = strdup(data);
429 /* Notify server that text data is now available */
430 format_list->formats = (uint32*) malloc(sizeof(uint32));
431 format_list->formats[0] = CB_FORMAT_TEXT;
432 format_list->num_formats = 1;
434 freerdp_channels_send_event(channels, (RDP_EVENT*) format_list);