in src/terminal/terminal.c [1418:1594]
static int __guac_terminal_send_key(guac_terminal* term, int keysym, int pressed) {
/* Ignore user input if terminal is not started */
if (!term->started) {
guac_client_log(term->client, GUAC_LOG_DEBUG, "Ignoring user input "
"while terminal has not yet started.");
return 0;
}
/* Hide mouse cursor if not already hidden */
if (term->current_cursor != GUAC_TERMINAL_CURSOR_BLANK) {
term->current_cursor = GUAC_TERMINAL_CURSOR_BLANK;
guac_common_cursor_set_blank(term->cursor);
guac_terminal_notify(term);
}
/* Track modifiers */
if (keysym == 0xFFE3 || keysym == 0xFFE4)
term->mod_ctrl = pressed;
else if (keysym == 0xFFE7 || keysym == 0xFFE8)
term->mod_meta = pressed;
else if (keysym == 0xFFE9 || keysym == 0xFFEA)
term->mod_alt = pressed;
else if (keysym == 0xFFE1 || keysym == 0xFFE2)
term->mod_shift = pressed;
/* If key pressed */
else if (pressed) {
/* Ctrl+Shift+V or Cmd+v (mac style) shortcuts for paste */
if ((keysym == 'V' && term->mod_ctrl) || (keysym == 'v' && term->mod_meta))
return guac_terminal_send_data(term, term->clipboard->buffer, term->clipboard->length);
/*
* Ctrl+Shift+C and Cmd+c shortcuts for copying are not handled, as
* selecting text in the terminal automatically copies it. To avoid
* attempts to use these shortcuts causing unexpected results in the
* terminal, these are just ignored.
*/
if ((keysym == 'C' && term->mod_ctrl) || (keysym == 'c' && term->mod_meta))
return 0;
/* Shift+PgUp / Shift+PgDown shortcuts for scrolling */
if (term->mod_shift) {
/* Page up */
if (keysym == 0xFF55) {
guac_terminal_scroll_display_up(term, term->term_height);
return 0;
}
/* Page down */
if (keysym == 0xFF56) {
guac_terminal_scroll_display_down(term, term->term_height);
return 0;
}
}
/* Reset scroll */
if (term->scroll_offset != 0)
guac_terminal_scroll_display_down(term, term->scroll_offset);
/* If alt being held, also send escape character */
if (term->mod_alt)
guac_terminal_send_string(term, "\x1B");
/* Translate Ctrl+letter to control code */
if (term->mod_ctrl) {
char data;
/* Keysyms for '@' through '_' are all conveniently in C0 order */
if (keysym >= '@' && keysym <= '_')
data = (char) (keysym - '@');
/* Handle lowercase as well */
else if (keysym >= 'a' && keysym <= 'z')
data = (char) (keysym - 'a' + 1);
/* Ctrl+? is DEL (0x7f) */
else if (keysym == '?')
data = 0x7F;
/* Map Ctrl+2 to same result as Ctrl+@ */
else if (keysym == '2')
data = 0x00;
/* Map Ctrl+3 through Ctrl-7 to the remaining C0 characters such that Ctrl+6 is the same as Ctrl+^ */
else if (keysym >= '3' && keysym <= '7')
data = (char) (keysym - '3' + 0x1B);
/* Otherwise ignore */
else
return 0;
return guac_terminal_send_data(term, &data, 1);
}
/* Translate Unicode to UTF-8 */
else if ((keysym >= 0x00 && keysym <= 0xFF) || ((keysym & 0xFFFF0000) == 0x01000000)) {
int length;
char data[5];
length = guac_terminal_encode_utf8(keysym & 0xFFFF, data);
return guac_terminal_send_data(term, data, length);
}
/* Typeable keys of number pad */
else if (keysym >= 0xFFAA && keysym <= 0xFFB9) {
char value = keysym - 0xFF80;
guac_terminal_send_data(term, &value, sizeof(value));
}
/* Non-printable keys */
else {
/* Backspace can vary based on configuration of terminal by client. */
if (keysym == 0xFF08) {
char backspace_str[] = { term->backspace, '\0' };
return guac_terminal_send_string(term, backspace_str);
}
if (keysym == 0xFF09 || keysym == 0xFF89) return guac_terminal_send_string(term, "\x09"); /* Tab */
if (keysym == 0xFF0D || keysym == 0xFF8D) return guac_terminal_send_string(term, "\x0D"); /* Enter */
if (keysym == 0xFF1B) return guac_terminal_send_string(term, "\x1B"); /* Esc */
if (keysym == 0xFF50 || keysym == 0xFF95) return guac_terminal_send_string(term, "\x1B[1~"); /* Home */
/* Arrow keys w/ application cursor */
if (term->application_cursor_keys) {
if (keysym == 0xFF51 || keysym == 0xFF96) return guac_terminal_send_string(term, "\x1BOD"); /* Left */
if (keysym == 0xFF52 || keysym == 0xFF97) return guac_terminal_send_string(term, "\x1BOA"); /* Up */
if (keysym == 0xFF53 || keysym == 0xFF98) return guac_terminal_send_string(term, "\x1BOC"); /* Right */
if (keysym == 0xFF54 || keysym == 0xFF99) return guac_terminal_send_string(term, "\x1BOB"); /* Down */
}
else {
if (keysym == 0xFF51 || keysym == 0xFF96) return guac_terminal_send_string(term, "\x1B[D"); /* Left */
if (keysym == 0xFF52 || keysym == 0xFF97) return guac_terminal_send_string(term, "\x1B[A"); /* Up */
if (keysym == 0xFF53 || keysym == 0xFF98) return guac_terminal_send_string(term, "\x1B[C"); /* Right */
if (keysym == 0xFF54 || keysym == 0xFF99) return guac_terminal_send_string(term, "\x1B[B"); /* Down */
}
if (keysym == 0xFF55 || keysym == 0xFF9A) return guac_terminal_send_string(term, "\x1B[5~"); /* Page up */
if (keysym == 0xFF56 || keysym == 0xFF9B) return guac_terminal_send_string(term, "\x1B[6~"); /* Page down */
if (keysym == 0xFF57 || keysym == 0xFF9C) return guac_terminal_send_string(term, "\x1B[4~"); /* End */
if (keysym == 0xFF63 || keysym == 0xFF9E) return guac_terminal_send_string(term, "\x1B[2~"); /* Insert */
if (keysym == 0xFFBE || keysym == 0xFF91) return guac_terminal_send_string(term, "\x1B[[A"); /* F1 */
if (keysym == 0xFFBF || keysym == 0xFF92) return guac_terminal_send_string(term, "\x1B[[B"); /* F2 */
if (keysym == 0xFFC0 || keysym == 0xFF93) return guac_terminal_send_string(term, "\x1B[[C"); /* F3 */
if (keysym == 0xFFC1 || keysym == 0xFF94) return guac_terminal_send_string(term, "\x1B[[D"); /* F4 */
if (keysym == 0xFFC2) return guac_terminal_send_string(term, "\x1B[[E"); /* F5 */
if (keysym == 0xFFC3) return guac_terminal_send_string(term, "\x1B[17~"); /* F6 */
if (keysym == 0xFFC4) return guac_terminal_send_string(term, "\x1B[18~"); /* F7 */
if (keysym == 0xFFC5) return guac_terminal_send_string(term, "\x1B[19~"); /* F8 */
if (keysym == 0xFFC6) return guac_terminal_send_string(term, "\x1B[20~"); /* F9 */
if (keysym == 0xFFC7) return guac_terminal_send_string(term, "\x1B[21~"); /* F10 */
if (keysym == 0xFFC8) return guac_terminal_send_string(term, "\x1B[22~"); /* F11 */
if (keysym == 0xFFC9) return guac_terminal_send_string(term, "\x1B[23~"); /* F12 */
if (keysym == 0xFFFF || keysym == 0xFF9F) return guac_terminal_send_string(term, "\x1B[3~"); /* Delete */
/* Ignore unknown keys */
guac_client_log(term->client, GUAC_LOG_DEBUG,
"Ignoring unknown keysym: 0x%X", keysym);
}
}
return 0;
}