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guacamole-spice-protocol/src/protocols/rdp/input.c
Michael Jumper e573e59e83 GUAC-1389: Add screen sharing support to RDP.
2016-03-07 11:32:44 -08:00

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/*
* Copyright (C) 2013 Glyptodon LLC
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "config.h"
#include "client.h"
#include "input.h"
#include "rdp.h"
#include "rdp_keymap.h"
#include <freerdp/freerdp.h>
#include <freerdp/input.h>
#include <guacamole/client.h>
#ifdef HAVE_FREERDP_DISPLAY_UPDATE_SUPPORT
#include "rdp_disp.h"
#endif
#include <pthread.h>
#include <stdlib.h>
int guac_rdp_send_keysym(guac_client* client, int keysym, int pressed) {
guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
freerdp* rdp_inst = rdp_client->rdp_inst;
/* Skip if not yet connected */
if (rdp_inst == NULL)
return 0;
/* If keysym can be in lookup table */
if (GUAC_RDP_KEYSYM_STORABLE(keysym)) {
int pressed_flags;
/* Look up scancode mapping */
const guac_rdp_keysym_desc* keysym_desc =
&GUAC_RDP_KEYSYM_LOOKUP(rdp_client->keymap, keysym);
/* If defined, send event */
if (keysym_desc->scancode != 0) {
pthread_mutex_lock(&(rdp_client->rdp_lock));
/* If defined, send any prerequesite keys that must be set */
if (keysym_desc->set_keysyms != NULL)
guac_rdp_update_keysyms(client, keysym_desc->set_keysyms, 0, 1);
/* If defined, release any keys that must be cleared */
if (keysym_desc->clear_keysyms != NULL)
guac_rdp_update_keysyms(client, keysym_desc->clear_keysyms, 1, 0);
/* Determine proper event flag for pressed state */
if (pressed)
pressed_flags = KBD_FLAGS_DOWN;
else
pressed_flags = KBD_FLAGS_RELEASE;
/* Send actual key */
rdp_inst->input->KeyboardEvent(rdp_inst->input, keysym_desc->flags | pressed_flags,
keysym_desc->scancode);
/* If defined, release any keys that were originally released */
if (keysym_desc->set_keysyms != NULL)
guac_rdp_update_keysyms(client, keysym_desc->set_keysyms, 0, 0);
/* If defined, send any keys that were originally set */
if (keysym_desc->clear_keysyms != NULL)
guac_rdp_update_keysyms(client, keysym_desc->clear_keysyms, 1, 1);
pthread_mutex_unlock(&(rdp_client->rdp_lock));
return 0;
}
}
/* Fall back to unicode events if undefined inside current keymap */
/* Only send when key pressed - Unicode events do not have
* DOWN/RELEASE flags */
if (pressed) {
guac_client_log(client, GUAC_LOG_DEBUG,
"Sending keysym 0x%x as Unicode", keysym);
/* Translate keysym into codepoint */
int codepoint;
if (keysym <= 0xFF)
codepoint = keysym;
else if (keysym >= 0x1000000)
codepoint = keysym & 0xFFFFFF;
else {
guac_client_log(client, GUAC_LOG_DEBUG,
"Unmapped keysym has no equivalent unicode "
"value: 0x%x", keysym);
return 0;
}
pthread_mutex_lock(&(rdp_client->rdp_lock));
/* Send Unicode event */
rdp_inst->input->UnicodeKeyboardEvent(
rdp_inst->input,
0, codepoint);
pthread_mutex_unlock(&(rdp_client->rdp_lock));
}
return 0;
}
void guac_rdp_update_keysyms(guac_client* client, const int* keysym_string, int from, int to) {
guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
int keysym;
/* Send all keysyms in string, NULL terminated */
while ((keysym = *keysym_string) != 0) {
/* Get current keysym state */
int current_state = GUAC_RDP_KEYSYM_LOOKUP(rdp_client->keysym_state, keysym);
/* If key is currently in given state, send event for changing it to specified "to" state */
if (current_state == from)
guac_rdp_send_keysym(client, *keysym_string, to);
/* Next keysym */
keysym_string++;
}
}
int guac_rdp_user_mouse_handler(guac_user* user, int x, int y, int mask) {
guac_client* client = user->client;
guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
freerdp* rdp_inst = rdp_client->rdp_inst;
/* Store current mouse location */
guac_common_cursor_move(rdp_client->display->cursor, user, x, y);
/* Skip if not yet connected */
if (rdp_inst == NULL)
return 0;
pthread_mutex_lock(&(rdp_client->rdp_lock));
/* If button mask unchanged, just send move event */
if (mask == rdp_client->mouse_button_mask)
rdp_inst->input->MouseEvent(rdp_inst->input, PTR_FLAGS_MOVE, x, y);
/* Otherwise, send events describing button change */
else {
/* Mouse buttons which have JUST become released */
int released_mask = rdp_client->mouse_button_mask & ~mask;
/* Mouse buttons which have JUST become pressed */
int pressed_mask = ~rdp_client->mouse_button_mask & mask;
/* Release event */
if (released_mask & 0x07) {
/* Calculate flags */
int flags = 0;
if (released_mask & 0x01) flags |= PTR_FLAGS_BUTTON1;
if (released_mask & 0x02) flags |= PTR_FLAGS_BUTTON3;
if (released_mask & 0x04) flags |= PTR_FLAGS_BUTTON2;
rdp_inst->input->MouseEvent(rdp_inst->input, flags, x, y);
}
/* Press event */
if (pressed_mask & 0x07) {
/* Calculate flags */
int flags = PTR_FLAGS_DOWN;
if (pressed_mask & 0x01) flags |= PTR_FLAGS_BUTTON1;
if (pressed_mask & 0x02) flags |= PTR_FLAGS_BUTTON3;
if (pressed_mask & 0x04) flags |= PTR_FLAGS_BUTTON2;
if (pressed_mask & 0x08) flags |= PTR_FLAGS_WHEEL | 0x78;
if (pressed_mask & 0x10) flags |= PTR_FLAGS_WHEEL | PTR_FLAGS_WHEEL_NEGATIVE | 0x88;
/* Send event */
rdp_inst->input->MouseEvent(rdp_inst->input, flags, x, y);
}
/* Scroll event */
if (pressed_mask & 0x18) {
/* Down */
if (pressed_mask & 0x08)
rdp_inst->input->MouseEvent(
rdp_inst->input,
PTR_FLAGS_WHEEL | 0x78,
x, y);
/* Up */
if (pressed_mask & 0x10)
rdp_inst->input->MouseEvent(
rdp_inst->input,
PTR_FLAGS_WHEEL | PTR_FLAGS_WHEEL_NEGATIVE | 0x88,
x, y);
}
rdp_client->mouse_button_mask = mask;
}
pthread_mutex_unlock(&(rdp_client->rdp_lock));
return 0;
}
int guac_rdp_user_key_handler(guac_user* user, int keysym, int pressed) {
guac_client* client = user->client;
guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
/* Update keysym state */
if (GUAC_RDP_KEYSYM_STORABLE(keysym))
GUAC_RDP_KEYSYM_LOOKUP(rdp_client->keysym_state, keysym) = pressed;
return guac_rdp_send_keysym(client, keysym, pressed);
}
int guac_rdp_user_size_handler(guac_user* user, int width, int height) {
#ifdef HAVE_FREERDP_DISPLAY_UPDATE_SUPPORT
guac_client* client = user->client;
guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
freerdp* rdp_inst = rdp_client->rdp_inst;
/* Skip if not yet connected */
if (rdp_inst == NULL)
return 0;
/* Convert client pixels to remote pixels */
width = width * rdp_client->settings->resolution
/ user->info.optimal_resolution;
height = height * rdp_client->settings->resolution
/ user->info.optimal_resolution;
/* Send display update */
pthread_mutex_lock(&(rdp_client->rdp_lock));
guac_rdp_disp_set_size(rdp_client->disp, rdp_inst->context, width, height);
pthread_mutex_unlock(&(rdp_client->rdp_lock));
#endif
return 0;
}
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