void __guac_rdp_client_load_keymap(guac_client* client,
const guac_rdp_keymap* keymap) {
rdp_guac_client_data* guac_client_data =
(rdp_guac_client_data*) client->data;
/* Get mapping */
const guac_rdp_keysym_desc* mapping = keymap->mapping;
/* If parent exists, load parent first */
if (keymap->parent != NULL)
__guac_rdp_client_load_keymap(client, keymap->parent);
/* Log load */
guac_client_log_info(client, "Loading keymap \"%s\"", keymap->name);
/* Load mapping into keymap */
while (mapping->keysym != 0) {
/* Copy mapping */
GUAC_RDP_KEYSYM_LOOKUP(guac_client_data->keymap, mapping->keysym) =
*mapping;
/* Next keysym */
mapping++;
}
}
int rdp_guac_client_key_handler(guac_client* client, int keysym, int pressed) {
rdp_guac_client_data* guac_client_data = (rdp_guac_client_data*) client->data;
/* Update keysym state */
if (GUAC_RDP_KEYSYM_STORABLE(keysym))
GUAC_RDP_KEYSYM_LOOKUP(guac_client_data->keysym_state, keysym) = pressed;
return __guac_rdp_send_keysym(client, keysym, pressed);
}
void __guac_rdp_update_keysyms(guac_client* client, const int* keysym_string, int from, int to) {
rdp_guac_client_data* guac_client_data = (rdp_guac_client_data*) 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(guac_client_data->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_send_keysym(guac_client* client, int keysym, int pressed) {
rdp_guac_client_data* guac_client_data = (rdp_guac_client_data*) client->data;
freerdp* rdp_inst = guac_client_data->rdp_inst;
/* 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(guac_client_data->keymap, keysym);
/* If defined, send event */
if (keysym_desc->scancode != 0) {
pthread_mutex_lock(&(guac_client_data->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(&(guac_client_data->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) {
/* Translate keysym into codepoint */
int codepoint;
if (keysym <= 0xFF)
codepoint = keysym;
else if (keysym >= 0x1000000)
codepoint = keysym & 0xFFFFFF;
else {
guac_client_log_info(client,
"Unmapped keysym has no equivalent unicode "
"value: 0x%x", keysym);
return 0;
}
pthread_mutex_lock(&(guac_client_data->rdp_lock));
/* Send Unicode event */
rdp_inst->input->UnicodeKeyboardEvent(
rdp_inst->input,
0, codepoint);
pthread_mutex_unlock(&(guac_client_data->rdp_lock));
}
return 0;
}
