Beispiel #1
0
/*
 * Handle key presses. Fixes state, then looks up the key symbol for the
 * given keycode, then looks up the key symbol (as UCS-2), converts it to
 * UTF-8 and stores it in the password array.
 *
 */
static void handle_key_press(xcb_key_press_event_t *event) {
    xkb_keysym_t ksym;
    char buffer[128];
    int n;
    bool ctrl;
    bool composed = false;

    ksym = xkb_state_key_get_one_sym(xkb_state, event->detail);
    ctrl = xkb_state_mod_name_is_active(xkb_state, XKB_MOD_NAME_CTRL, XKB_STATE_MODS_DEPRESSED);

    /* The buffer will be null-terminated, so n >= 2 for 1 actual character. */
    memset(buffer, '\0', sizeof(buffer));

    if (xkb_compose_state && xkb_compose_state_feed(xkb_compose_state, ksym) == XKB_COMPOSE_FEED_ACCEPTED) {
        switch (xkb_compose_state_get_status(xkb_compose_state)) {
        case XKB_COMPOSE_NOTHING:
            break;
        case XKB_COMPOSE_COMPOSING:
            return;
        case XKB_COMPOSE_COMPOSED:
            /* xkb_compose_state_get_utf8 doesn't include the terminating byte in the return value
            * as xkb_keysym_to_utf8 does. Adding one makes the variable n consistent. */
            n = xkb_compose_state_get_utf8(xkb_compose_state, buffer, sizeof(buffer)) + 1;
            ksym = xkb_compose_state_get_one_sym(xkb_compose_state);
            composed = true;
            break;
        case XKB_COMPOSE_CANCELLED:
            xkb_compose_state_reset(xkb_compose_state);
            return;
        }
    }

    if (!composed) {
        n = xkb_keysym_to_utf8(ksym, buffer, sizeof(buffer));
    }

    switch (ksym) {
    case XKB_KEY_Return:
    case XKB_KEY_KP_Enter:
    case XKB_KEY_XF86ScreenSaver:
        if (pam_state == STATE_PAM_WRONG)
            return;

        if (skip_without_validation()) {
            clear_input();
            return;
        }
        password[input_position] = '\0';
        unlock_state = STATE_KEY_PRESSED;
        redraw_screen();
        input_done();
        skip_repeated_empty_password = true;
        return;
    default:
        skip_repeated_empty_password = false;
    }

    switch (ksym) {
    case XKB_KEY_u:
        if (ctrl) {
            DEBUG("C-u pressed\n");
            clear_input();
            return;
        }
        break;

    case XKB_KEY_Escape:
        clear_input();
        return;

    case XKB_KEY_BackSpace:
        if (input_position == 0)
            return;

        /* decrement input_position to point to the previous glyph */
        u8_dec(password, &input_position);
        password[input_position] = '\0';

        /* Hide the unlock indicator after a bit if the password buffer is
        * empty. */
        START_TIMER(clear_indicator_timeout, 1.0, clear_indicator_cb);
        unlock_state = STATE_BACKSPACE_ACTIVE;
        redraw_screen();
        unlock_state = STATE_KEY_PRESSED;
        return;
    }

    if ((input_position + 8) >= sizeof(password))
        return;

#if 0
    /* FIXME: handle all of these? */
    printf("is_keypad_key = %d\n", xcb_is_keypad_key(sym));
    printf("is_private_keypad_key = %d\n", xcb_is_private_keypad_key(sym));
    printf("xcb_is_cursor_key = %d\n", xcb_is_cursor_key(sym));
    printf("xcb_is_pf_key = %d\n", xcb_is_pf_key(sym));
    printf("xcb_is_function_key = %d\n", xcb_is_function_key(sym));
    printf("xcb_is_misc_function_key = %d\n", xcb_is_misc_function_key(sym));
    printf("xcb_is_modifier_key = %d\n", xcb_is_modifier_key(sym));
#endif

    if (n < 2)
        return;

    /* store it in the password array as UTF-8 */
    memcpy(password + input_position, buffer, n - 1);
    input_position += n - 1;
    DEBUG("current password = %.*s\n", input_position, password);

    if (unlock_indicator) {
        unlock_state = STATE_KEY_ACTIVE;
        redraw_screen();
        unlock_state = STATE_KEY_PRESSED;

        struct ev_timer *timeout = NULL;
        START_TIMER(timeout, TSTAMP_N_SECS(0.25), redraw_timeout);
        STOP_TIMER(clear_indicator_timeout);
    }

    START_TIMER(discard_passwd_timeout, TSTAMP_N_MINS(3), discard_passwd_cb);
}
Beispiel #2
0
/*
 * Handle key presses. Fixes state, then looks up the key symbol for the
 * given keycode, then looks up the key symbol (as UCS-2), converts it to
 * UTF-8 and stores it in the password array.
 *
 */
static void handle_key_press(xcb_key_press_event_t *event) {
    xkb_keysym_t ksym;
    char buffer[128];
    int n;
    bool ctrl;

    ksym = xkb_state_key_get_one_sym(xkb_state, event->detail);
    ctrl = xkb_state_mod_name_is_active(xkb_state, "Control", XKB_STATE_MODS_DEPRESSED);

    /* The buffer will be null-terminated, so n >= 2 for 1 actual character. */
    memset(buffer, '\0', sizeof(buffer));
    n = xkb_keysym_to_utf8(ksym, buffer, sizeof(buffer));

    switch (ksym) {
    case XKB_KEY_Return:
    case XKB_KEY_KP_Enter:
    case XKB_KEY_XF86ScreenSaver:
        if (skip_without_validation()) {
            clear_input();
            return;
        }
        password[input_position] = '\0';
        unlock_state = STATE_KEY_PRESSED;
        redraw_screen();
        input_done();
        skip_repeated_empty_password = true;
        return;
    default:
        skip_repeated_empty_password = false;
    }

    switch (ksym) {
    case XKB_KEY_u:
        if (ctrl) {
            DEBUG("C-u pressed\n");
            clear_input();
            return;
        }
        break;

    case XKB_KEY_Escape:
        clear_input();
        return;

    case XKB_KEY_BackSpace:
        if (input_position == 0)
            return;

        /* decrement input_position to point to the previous glyph */
        u8_dec(password, &input_position);
        password[input_position] = '\0';

        /* Hide the unlock indicator after a bit if the password buffer is
         * empty. */
        START_TIMER(clear_indicator_timeout, 1.0, clear_indicator_cb);
        unlock_state = STATE_BACKSPACE_ACTIVE;
        redraw_screen();
        unlock_state = STATE_KEY_PRESSED;
        return;
    }

    if ((input_position + 8) >= sizeof(password))
        return;

#if 0
    /* FIXME: handle all of these? */
    printf("is_keypad_key = %d\n", xcb_is_keypad_key(sym));
    printf("is_private_keypad_key = %d\n", xcb_is_private_keypad_key(sym));
    printf("xcb_is_cursor_key = %d\n", xcb_is_cursor_key(sym));
    printf("xcb_is_pf_key = %d\n", xcb_is_pf_key(sym));
    printf("xcb_is_function_key = %d\n", xcb_is_function_key(sym));
    printf("xcb_is_misc_function_key = %d\n", xcb_is_misc_function_key(sym));
    printf("xcb_is_modifier_key = %d\n", xcb_is_modifier_key(sym));
#endif

    if (n < 2)
        return;

    /* store it in the password array as UTF-8 */
    memcpy(password+input_position, buffer, n-1);
    input_position += n-1;
    DEBUG("current password = %.*s\n", input_position, password);

    unlock_state = STATE_KEY_ACTIVE;
    redraw_screen();
    unlock_state = STATE_KEY_PRESSED;

    struct ev_timer *timeout = NULL;
    START_TIMER(timeout, TSTAMP_N_SECS(0.25), redraw_timeout);
    STOP_TIMER(clear_indicator_timeout);
    START_TIMER(discard_passwd_timeout, TSTAMP_N_MINS(3), discard_passwd_cb);
}