2175 lines
68 KiB
C
2175 lines
68 KiB
C
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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#include "common/clipboard.h"
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#include "common/cursor.h"
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#include "terminal/buffer.h"
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#include "terminal/color-scheme.h"
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#include "terminal/common.h"
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#include "terminal/display.h"
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#include "terminal/palette.h"
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#include "terminal/select.h"
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#include "terminal/terminal.h"
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#include "terminal/terminal-handlers.h"
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#include "terminal/terminal-priv.h"
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#include "terminal/types.h"
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#include "terminal/typescript.h"
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#include <ctype.h>
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#include <errno.h>
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#include <pthread.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/time.h>
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#include <unistd.h>
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#include <wchar.h>
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#include <guacamole/client.h>
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#include <guacamole/error.h>
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#include <guacamole/protocol.h>
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#include <guacamole/socket.h>
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#include <guacamole/timestamp.h>
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/**
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* Sets the given range of columns to the given character.
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*/
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static void __guac_terminal_set_columns(guac_terminal* terminal, int row,
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int start_column, int end_column, guac_terminal_char* character) {
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guac_terminal_display_set_columns(terminal->display, row + terminal->scroll_offset,
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start_column, end_column, character);
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guac_terminal_buffer_set_columns(terminal->buffer, row,
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start_column, end_column, character);
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/* Clear selection if region is modified */
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guac_terminal_select_touch(terminal, row, start_column, row, end_column);
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}
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/**
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* Enforces a character break at the given edge, ensuring that the left side
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* of the edge is the final column of a character, and the right side of the
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* edge is the initial column of a DIFFERENT character.
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*
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* For a character in a column N, the left edge number is N, and the right
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* edge is N+1.
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*/
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static void __guac_terminal_force_break(guac_terminal* terminal, int row, int edge) {
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guac_terminal_buffer_row* buffer_row = guac_terminal_buffer_get_row(terminal->buffer, row, 0);
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/* Ensure character to left of edge is unbroken */
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if (edge > 0) {
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int end_column = edge - 1;
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int start_column = end_column;
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guac_terminal_char* start_char = &(buffer_row->characters[start_column]);
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/* Determine start column */
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while (start_column > 0 && start_char->value == GUAC_CHAR_CONTINUATION) {
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start_char--;
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start_column--;
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}
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/* Advance to start of broken character if necessary */
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if (start_char->value != GUAC_CHAR_CONTINUATION && start_char->width < end_column - start_column + 1) {
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start_column += start_char->width;
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start_char += start_char->width;
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}
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/* Clear character if broken */
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if (start_char->value == GUAC_CHAR_CONTINUATION || start_char->width != end_column - start_column + 1) {
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guac_terminal_char cleared_char;
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cleared_char.value = ' ';
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cleared_char.attributes = start_char->attributes;
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cleared_char.width = 1;
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__guac_terminal_set_columns(terminal, row, start_column, end_column, &cleared_char);
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}
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}
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/* Ensure character to right of edge is unbroken */
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if (edge >= 0 && edge < buffer_row->length) {
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int start_column = edge;
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int end_column = start_column;
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guac_terminal_char* start_char = &(buffer_row->characters[start_column]);
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guac_terminal_char* end_char = &(buffer_row->characters[end_column]);
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/* Determine end column */
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while (end_column+1 < buffer_row->length && (end_char+1)->value == GUAC_CHAR_CONTINUATION) {
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end_char++;
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end_column++;
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}
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/* Advance to start of broken character if necessary */
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if (start_char->value != GUAC_CHAR_CONTINUATION && start_char->width < end_column - start_column + 1) {
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start_column += start_char->width;
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start_char += start_char->width;
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}
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/* Clear character if broken */
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if (start_char->value == GUAC_CHAR_CONTINUATION || start_char->width != end_column - start_column + 1) {
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guac_terminal_char cleared_char;
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cleared_char.value = ' ';
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cleared_char.attributes = start_char->attributes;
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cleared_char.width = 1;
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__guac_terminal_set_columns(terminal, row, start_column, end_column, &cleared_char);
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}
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}
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}
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/**
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* Returns the number of rows available within the terminal buffer, taking
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* changes to the desired scrollback size into account. Regardless of the
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* true buffer length, only the number of rows that should be made available
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* will be returned.
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*
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* @param term
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* The terminal whose effective buffer length should be retrieved.
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*
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* @return
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* The number of rows effectively available within the terminal buffer,
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* taking changes to the desired scrollback size into account.
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*/
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static int guac_terminal_effective_buffer_length(guac_terminal* term) {
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int scrollback = term->requested_scrollback;
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/* Limit available scrollback to defined maximum */
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if (scrollback > term->max_scrollback)
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scrollback = term->max_scrollback;
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/* There must always be at least enough scrollback to cover the visible
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* terminal display */
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else if (scrollback < term->term_height)
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scrollback = term->term_height;
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/* If the buffer contains more rows than requested, pretend it only
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* contains the requested number of rows */
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int effective_length = term->buffer->length;
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if (effective_length > scrollback)
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effective_length = scrollback;
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return effective_length;
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}
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int guac_terminal_get_available_scroll(guac_terminal* term) {
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return guac_terminal_effective_buffer_length(term) - term->term_height;
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}
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int guac_terminal_get_rows(guac_terminal* term) {
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return term->term_height;
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}
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int guac_terminal_get_columns(guac_terminal* term) {
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return term->term_width;
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}
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void guac_terminal_reset(guac_terminal* term) {
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int row;
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/* Set current state */
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term->char_handler = guac_terminal_echo;
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term->active_char_set = 0;
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term->char_mapping[0] =
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term->char_mapping[1] = NULL;
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/* Reset cursor location */
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term->cursor_row = term->visible_cursor_row = term->saved_cursor_row = 0;
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term->cursor_col = term->visible_cursor_col = term->saved_cursor_col = 0;
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term->cursor_visible = true;
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/* Clear scrollback, buffer, and scroll region */
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term->buffer->top = 0;
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term->buffer->length = 0;
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term->scroll_start = 0;
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term->scroll_end = term->term_height - 1;
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term->scroll_offset = 0;
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/* Reset scrollbar bounds */
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guac_terminal_scrollbar_set_bounds(term->scrollbar, 0, 0);
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guac_terminal_scrollbar_set_value(term->scrollbar, -term->scroll_offset);
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/* Reset flags */
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term->text_selected = false;
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term->selection_committed = false;
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term->application_cursor_keys = false;
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term->automatic_carriage_return = false;
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term->insert_mode = false;
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/* Reset tabs */
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term->tab_interval = 8;
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memset(term->custom_tabs, 0, sizeof(term->custom_tabs));
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/* Reset character attributes */
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term->current_attributes = term->default_char.attributes;
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/* Reset display palette */
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guac_terminal_display_reset_palette(term->display);
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/* Clear terminal */
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for (row=0; row<term->term_height; row++)
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guac_terminal_set_columns(term, row, 0, term->term_width, &(term->default_char));
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}
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/**
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* Paints or repaints the background of the terminal display. This painting
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* occurs beneath the actual terminal and scrollbar layers, and thus will not
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* overwrite any text or other content currently on the screen. This is only
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* necessary to paint over parts of the terminal background which may otherwise
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* be transparent (the default layer background).
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*
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* @param terminal
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* The terminal whose background should be painted or repainted.
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*
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* @param socket
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* The socket over which instructions required to paint / repaint the
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* terminal background should be send.
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*/
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static void guac_terminal_repaint_default_layer(guac_terminal* terminal,
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guac_socket* socket) {
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int width = terminal->width;
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int height = terminal->height;
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guac_terminal_display* display = terminal->display;
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/* Get background color */
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const guac_terminal_color* color = &display->default_background;
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/* Reset size */
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guac_protocol_send_size(socket, GUAC_DEFAULT_LAYER, width, height);
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/* Paint background color */
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guac_protocol_send_rect(socket, GUAC_DEFAULT_LAYER, 0, 0, width, height);
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guac_protocol_send_cfill(socket, GUAC_COMP_OVER, GUAC_DEFAULT_LAYER,
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color->red, color->green, color->blue, 0xFF);
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}
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/**
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* Automatically and continuously renders frames of terminal data while the
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* associated guac_client is running.
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*
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* @param data
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* A pointer to the guac_terminal that should be continuously rendered
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* while its associated guac_client is running.
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*
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* @return
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* Always NULL.
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*/
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void* guac_terminal_thread(void* data) {
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guac_terminal* terminal = (guac_terminal*) data;
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guac_client* client = terminal->client;
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/* Render frames only while client is running */
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while (client->state == GUAC_CLIENT_RUNNING) {
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/* Stop rendering if an error occurs */
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if (guac_terminal_render_frame(terminal))
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break;
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/* Signal end of frame */
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guac_client_end_frame(client);
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guac_socket_flush(client->socket);
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}
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/* The client has stopped or an error has occurred */
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return NULL;
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}
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guac_terminal_options* guac_terminal_options_create(
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int width, int height, int dpi) {
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guac_terminal_options* options = malloc(sizeof(guac_terminal_options));
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/* Set all required parameters */
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options->width = width;
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options->height = height;
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options->dpi = dpi;
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/* Set default values for all other parameters */
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options->disable_copy = GUAC_TERMINAL_DEFAULT_DISABLE_COPY;
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options->max_scrollback = GUAC_TERMINAL_DEFAULT_MAX_SCROLLBACK;
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options->font_name = GUAC_TERMINAL_DEFAULT_FONT_NAME;
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options->font_size = GUAC_TERMINAL_DEFAULT_FONT_SIZE;
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options->color_scheme = GUAC_TERMINAL_DEFAULT_COLOR_SCHEME;
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options->backspace = GUAC_TERMINAL_DEFAULT_BACKSPACE;
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return options;
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}
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/**
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* Calculate the available height and width in characters for text display in
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* the terminal and store the results in the pointer arguments.
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*
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* @param terminal
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* The terminal provides character width and height for calculations.
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*
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* @param height
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* The outer height of the terminal, in pixels.
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*
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* @param width
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* The outer width of the terminal, in pixels.
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*
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* @param rows
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* Pointer to the calculated height of the terminal for text display,
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* in characters.
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*
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* @param columns
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* Pointer to the calculated width of the terminal for text display,
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* in characters.
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*/
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static void calculate_rows_and_columns(guac_terminal* term,
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int height, int width, int *rows, int *columns) {
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int margin = term->display->margin;
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int char_width = term->display->char_width;
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int char_height = term->display->char_height;
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/* Calculate available display area */
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int available_width = width - GUAC_TERMINAL_SCROLLBAR_WIDTH - 2 * margin;
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if (available_width < 0)
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available_width = 0;
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int available_height = height - 2 * margin;
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if (available_height < 0)
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available_height = 0;
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/* Calculate dimensions */
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*rows = available_height / char_height;
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*columns = available_width / char_width;
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/* Keep height within predefined maximum */
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if (*rows > GUAC_TERMINAL_MAX_ROWS)
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*rows = GUAC_TERMINAL_MAX_ROWS;
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/* Keep width within predefined maximum */
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if (*columns > GUAC_TERMINAL_MAX_COLUMNS)
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*columns = GUAC_TERMINAL_MAX_COLUMNS;
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}
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/**
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* Calculate the available height and width in pixels of the terminal for text
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* display in the terminal and store the results in the pointer arguments.
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*
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* @param terminal
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* The terminal provides character width and height for calculations.
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*
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* @param rows
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* The available height of the terminal for text display, in characters.
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*
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* @param columns
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* The available width of the terminal for text display, in characters.
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*
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* @param height
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* Pointer to the calculated available height of the terminal for text
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* display, in pixels.
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*
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* @param width
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* Pointer to the calculated available width of the terminal for text
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* display, in pixels.
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*/
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static void calculate_height_and_width(guac_terminal* term,
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int rows, int columns, int *height, int *width) {
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int margin = term->display->margin;
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int char_width = term->display->char_width;
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int char_height = term->display->char_height;
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/* Recalculate height if max rows reached */
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if (rows == GUAC_TERMINAL_MAX_ROWS) {
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int available_height = GUAC_TERMINAL_MAX_ROWS * char_height;
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*height = available_height + 2 * margin;
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}
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/* Recalculate width if max columns reached */
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if (columns == GUAC_TERMINAL_MAX_COLUMNS) {
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int available_width = GUAC_TERMINAL_MAX_COLUMNS * char_width;
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*width = available_width + GUAC_TERMINAL_SCROLLBAR_WIDTH + 2 * margin;
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}
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}
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guac_terminal* guac_terminal_create(guac_client* client,
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guac_terminal_options* options) {
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/* The width and height may need to be changed from what's requested */
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int width = options->width;
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int height = options->height;
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/* Build default character using default colors */
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guac_terminal_char default_char = {
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.value = 0,
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.attributes = {
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.bold = false,
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.half_bright = false,
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.reverse = false,
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.underscore = false
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},
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.width = 1
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};
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/* Initialized by guac_terminal_parse_color_scheme. */
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guac_terminal_color (*default_palette)[256] = (guac_terminal_color(*)[256])
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malloc(sizeof(guac_terminal_color[256]));
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guac_terminal_parse_color_scheme(client, options->color_scheme,
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&default_char.attributes.foreground,
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&default_char.attributes.background,
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default_palette);
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guac_terminal* term = malloc(sizeof(guac_terminal));
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term->started = false;
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term->client = client;
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term->upload_path_handler = NULL;
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term->file_download_handler = NULL;
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/* Copy initially-provided color scheme and font details */
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term->color_scheme = strdup(options->color_scheme);
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term->font_name = strdup(options->font_name);
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term->font_size = options->font_size;
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/* Init modified flag and conditional */
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term->modified = 0;
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pthread_cond_init(&(term->modified_cond), NULL);
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pthread_mutex_init(&(term->modified_lock), NULL);
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/* Maximum and requested scrollback are initially the same */
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term->max_scrollback = options->max_scrollback;
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term->requested_scrollback = options->max_scrollback;
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/* Allocate enough space for maximum scrollback, bumping up internal
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* storage as necessary to allow screen to be resized to maximum height */
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int initial_scrollback = options->max_scrollback;
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if (initial_scrollback < GUAC_TERMINAL_MAX_ROWS)
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initial_scrollback = GUAC_TERMINAL_MAX_ROWS;
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/* Init buffer */
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term->buffer = guac_terminal_buffer_alloc(initial_scrollback,
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&default_char);
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/* Init display */
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term->display = guac_terminal_display_alloc(client,
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options->font_name, options->font_size, options->dpi,
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&default_char.attributes.foreground,
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&default_char.attributes.background,
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(guac_terminal_color(*)[256]) default_palette);
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/* Fail if display init failed */
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if (term->display == NULL) {
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guac_client_log(client, GUAC_LOG_DEBUG, "Display initialization failed");
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free(term);
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return NULL;
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}
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/* Init common cursor */
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term->cursor = guac_common_cursor_alloc(client);
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/* Init terminal state */
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term->current_attributes = default_char.attributes;
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term->default_char = default_char;
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term->clipboard = guac_common_clipboard_alloc();
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term->disable_copy = options->disable_copy;
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/* Calculate available text display area by character size */
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int rows, columns;
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calculate_rows_and_columns(term, height, width, &rows, &columns);
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|
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/* Calculate available display area in pixels */
|
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int adjusted_height = height;
|
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int adjusted_width = width;
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calculate_height_and_width(term, rows, columns,
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|
&adjusted_height, &adjusted_width);
|
|
|
|
/* Set size of available screen area */
|
|
term->outer_height = height;
|
|
term->outer_width = width;
|
|
|
|
/* Set rows and columns size */
|
|
term->term_height = rows;
|
|
term->term_width = columns;
|
|
|
|
/* Set pixel size */
|
|
term->height = adjusted_height;
|
|
term->width = adjusted_width;
|
|
|
|
/* Open STDIN pipe */
|
|
if (pipe(term->stdin_pipe_fd)) {
|
|
guac_error = GUAC_STATUS_SEE_ERRNO;
|
|
guac_error_message = "Unable to open pipe for STDIN";
|
|
free(term);
|
|
return NULL;
|
|
}
|
|
|
|
/* Read input from keyboard by default */
|
|
term->input_stream = NULL;
|
|
|
|
/* Init pipe stream (output to display by default) */
|
|
term->pipe_stream = NULL;
|
|
|
|
/* No typescript by default */
|
|
term->typescript = NULL;
|
|
|
|
/* Init terminal lock */
|
|
pthread_mutex_init(&(term->lock), NULL);
|
|
|
|
/* Repaint and resize overall display */
|
|
guac_terminal_repaint_default_layer(term, term->client->socket);
|
|
guac_terminal_display_resize(term->display,
|
|
term->term_width, term->term_height);
|
|
|
|
/* Allocate scrollbar */
|
|
term->scrollbar = guac_terminal_scrollbar_alloc(term->client, GUAC_DEFAULT_LAYER,
|
|
term->outer_width, term->outer_height, term->term_height);
|
|
|
|
/* Associate scrollbar with this terminal */
|
|
term->scrollbar->data = term;
|
|
term->scrollbar->scroll_handler = guac_terminal_scroll_handler;
|
|
|
|
/* Init terminal */
|
|
guac_terminal_reset(term);
|
|
|
|
/* All mouse buttons are released */
|
|
term->mouse_mask = 0;
|
|
|
|
/* All keyboard modifiers are released */
|
|
term->mod_alt =
|
|
term->mod_ctrl =
|
|
term->mod_shift = 0;
|
|
|
|
/* Initialize mouse cursor */
|
|
term->current_cursor = GUAC_TERMINAL_CURSOR_BLANK;
|
|
guac_common_cursor_set_blank(term->cursor);
|
|
|
|
/* Start terminal thread */
|
|
if (pthread_create(&(term->thread), NULL,
|
|
guac_terminal_thread, (void*) term)) {
|
|
guac_terminal_free(term);
|
|
return NULL;
|
|
}
|
|
|
|
/* Configure backspace */
|
|
term->backspace = options->backspace;
|
|
|
|
return term;
|
|
|
|
}
|
|
|
|
void guac_terminal_start(guac_terminal* term) {
|
|
term->started = true;
|
|
guac_terminal_notify(term);
|
|
}
|
|
|
|
void guac_terminal_stop(guac_terminal* term) {
|
|
|
|
/* Close input pipe and set fds to invalid */
|
|
if (term->stdin_pipe_fd[1] != -1) {
|
|
close(term->stdin_pipe_fd[1]);
|
|
term->stdin_pipe_fd[1] = -1;
|
|
}
|
|
if (term->stdin_pipe_fd[0] != -1) {
|
|
close(term->stdin_pipe_fd[0]);
|
|
term->stdin_pipe_fd[0] = -1;
|
|
}
|
|
}
|
|
|
|
void guac_terminal_free(guac_terminal* term) {
|
|
|
|
/* Close user input pipe */
|
|
guac_terminal_stop(term);
|
|
|
|
/* Wait for render thread to finish */
|
|
pthread_join(term->thread, NULL);
|
|
|
|
/* Close and flush any open pipe stream */
|
|
guac_terminal_pipe_stream_close(term);
|
|
|
|
/* Close and flush any active typescript */
|
|
guac_terminal_typescript_free(term->typescript);
|
|
|
|
/* Free display */
|
|
guac_terminal_display_free(term->display);
|
|
|
|
/* Free buffer */
|
|
guac_terminal_buffer_free(term->buffer);
|
|
|
|
/* Free scrollbar */
|
|
guac_terminal_scrollbar_free(term->scrollbar);
|
|
|
|
/* Free copies of font and color scheme information */
|
|
free((char*) term->color_scheme);
|
|
free((char*) term->font_name);
|
|
|
|
/* Free clipboard */
|
|
guac_common_clipboard_free(term->clipboard);
|
|
|
|
/* Free the terminal itself */
|
|
free(term);
|
|
|
|
}
|
|
|
|
/**
|
|
* Populate the given timespec with the current time, plus the given offset.
|
|
*
|
|
* @param ts
|
|
* The timespec structure to populate.
|
|
*
|
|
* @param offset_sec
|
|
* The offset from the current time to use when populating the given
|
|
* timespec, in seconds.
|
|
*
|
|
* @param offset_usec
|
|
* The offset from the current time to use when populating the given
|
|
* timespec, in microseconds.
|
|
*/
|
|
static void guac_terminal_get_absolute_time(struct timespec* ts,
|
|
int offset_sec, int offset_usec) {
|
|
|
|
/* Get timeval */
|
|
struct timeval tv;
|
|
gettimeofday(&tv, NULL);
|
|
|
|
/* Update with offset */
|
|
tv.tv_sec += offset_sec;
|
|
tv.tv_usec += offset_usec;
|
|
|
|
/* Wrap to next second if necessary */
|
|
if (tv.tv_usec >= 1000000) {
|
|
tv.tv_sec++;
|
|
tv.tv_usec -= 1000000;
|
|
}
|
|
|
|
/* Convert to timespec */
|
|
ts->tv_sec = tv.tv_sec;
|
|
ts->tv_nsec = tv.tv_usec * 1000;
|
|
|
|
}
|
|
|
|
/**
|
|
* Waits for the terminal state to be modified, returning only when the
|
|
* specified timeout has elapsed or a frame flush is desired. Note that the
|
|
* modified flag of the terminal will only be reset if no data remains to be
|
|
* read from STDOUT.
|
|
*
|
|
* @param terminal
|
|
* The terminal to wait on.
|
|
*
|
|
* @param msec_timeout
|
|
* The maximum amount of time to wait, in milliseconds.
|
|
*
|
|
* @return
|
|
* Non-zero if the terminal has been modified, zero if the timeout has
|
|
* elapsed without the terminal being modified.
|
|
*/
|
|
static int guac_terminal_wait(guac_terminal* terminal, int msec_timeout) {
|
|
|
|
int retval = 1;
|
|
|
|
pthread_mutex_t* mod_lock = &(terminal->modified_lock);
|
|
pthread_cond_t* mod_cond = &(terminal->modified_cond);
|
|
|
|
/* Split provided milliseconds into microseconds and whole seconds */
|
|
int secs = msec_timeout / 1000;
|
|
int usecs = (msec_timeout % 1000) * 1000;
|
|
|
|
/* Calculate absolute timestamp from provided relative timeout */
|
|
struct timespec timeout;
|
|
guac_terminal_get_absolute_time(&timeout, secs, usecs);
|
|
|
|
/* Test for terminal modification */
|
|
pthread_mutex_lock(mod_lock);
|
|
if (terminal->modified)
|
|
goto wait_complete;
|
|
|
|
/* If not yet modified, wait for modification condition to be signaled */
|
|
retval = pthread_cond_timedwait(mod_cond, mod_lock, &timeout) != ETIMEDOUT;
|
|
|
|
wait_complete:
|
|
|
|
/* Terminal is no longer modified */
|
|
terminal->modified = 0;
|
|
pthread_mutex_unlock(mod_lock);
|
|
return retval;
|
|
|
|
}
|
|
|
|
int guac_terminal_render_frame(guac_terminal* terminal) {
|
|
|
|
guac_client* client = terminal->client;
|
|
|
|
int wait_result;
|
|
|
|
/* Wait for data to be available */
|
|
wait_result = guac_terminal_wait(terminal, 1000);
|
|
if (wait_result || !terminal->started) {
|
|
|
|
guac_timestamp frame_start = guac_timestamp_current();
|
|
|
|
do {
|
|
|
|
/* Calculate time remaining in frame */
|
|
guac_timestamp frame_end = guac_timestamp_current();
|
|
int frame_remaining = frame_start + GUAC_TERMINAL_FRAME_DURATION
|
|
- frame_end;
|
|
|
|
/* Wait again if frame remaining */
|
|
if (frame_remaining > 0 || !terminal->started)
|
|
wait_result = guac_terminal_wait(terminal,
|
|
GUAC_TERMINAL_FRAME_TIMEOUT);
|
|
else
|
|
break;
|
|
|
|
} while (client->state == GUAC_CLIENT_RUNNING
|
|
&& (wait_result > 0 || !terminal->started));
|
|
|
|
/* Flush terminal */
|
|
guac_terminal_lock(terminal);
|
|
guac_terminal_flush(terminal);
|
|
guac_terminal_unlock(terminal);
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
int guac_terminal_read_stdin(guac_terminal* terminal, char* c, int size) {
|
|
int stdin_fd = terminal->stdin_pipe_fd[0];
|
|
return read(stdin_fd, c, size);
|
|
}
|
|
|
|
void guac_terminal_notify(guac_terminal* terminal) {
|
|
|
|
pthread_mutex_t* mod_lock = &(terminal->modified_lock);
|
|
pthread_cond_t* mod_cond = &(terminal->modified_cond);
|
|
|
|
pthread_mutex_lock(mod_lock);
|
|
|
|
/* Signal modification */
|
|
terminal->modified = 1;
|
|
pthread_cond_signal(mod_cond);
|
|
|
|
pthread_mutex_unlock(mod_lock);
|
|
|
|
}
|
|
|
|
int guac_terminal_printf(guac_terminal* terminal, const char* format, ...) {
|
|
|
|
int written;
|
|
|
|
va_list ap;
|
|
char buffer[1024];
|
|
|
|
/* Print to buffer */
|
|
va_start(ap, format);
|
|
written = vsnprintf(buffer, sizeof(buffer)-1, format, ap);
|
|
va_end(ap);
|
|
|
|
if (written < 0)
|
|
return written;
|
|
|
|
/* Write to STDOUT */
|
|
return guac_terminal_write(terminal, buffer, written);
|
|
|
|
}
|
|
|
|
char* guac_terminal_prompt(guac_terminal* terminal, const char* title,
|
|
bool echo) {
|
|
|
|
char buffer[1024];
|
|
|
|
int pos;
|
|
char in_byte;
|
|
|
|
/* Prompting implicitly requires user input */
|
|
guac_terminal_start(terminal);
|
|
|
|
/* Print title */
|
|
guac_terminal_printf(terminal, "%s", title);
|
|
|
|
/* Read bytes until newline */
|
|
pos = 0;
|
|
while (guac_terminal_read_stdin(terminal, &in_byte, 1) == 1) {
|
|
|
|
/* Backspace */
|
|
if (in_byte == 0x7F) {
|
|
if (pos > 0) {
|
|
guac_terminal_printf(terminal, "\b \b");
|
|
pos--;
|
|
}
|
|
}
|
|
|
|
/* CR (end of input */
|
|
else if (in_byte == 0x0D) {
|
|
guac_terminal_printf(terminal, "\r\n");
|
|
break;
|
|
}
|
|
|
|
/* Otherwise, store byte if there is room */
|
|
else if (pos < sizeof(buffer) - 1) {
|
|
|
|
/* Store character, update buffers */
|
|
buffer[pos++] = in_byte;
|
|
|
|
/* Print character if echoing */
|
|
if (echo)
|
|
guac_terminal_printf(terminal, "%c", in_byte);
|
|
else
|
|
guac_terminal_printf(terminal, "*");
|
|
|
|
}
|
|
|
|
/* Ignore all other input */
|
|
|
|
}
|
|
|
|
/* Terminate string */
|
|
buffer[pos] = 0;
|
|
|
|
/* Return newly-allocated string containing result */
|
|
return strdup(buffer);
|
|
|
|
}
|
|
|
|
int guac_terminal_set(guac_terminal* term, int row, int col, int codepoint) {
|
|
|
|
/* Calculate width in columns */
|
|
int width = wcwidth(codepoint);
|
|
if (width < 0)
|
|
width = 1;
|
|
|
|
/* Do nothing if glyph is empty */
|
|
else if (width == 0)
|
|
return 0;
|
|
|
|
/* Build character with current attributes */
|
|
guac_terminal_char guac_char = {
|
|
.value = codepoint,
|
|
.attributes = term->current_attributes,
|
|
.width = width
|
|
};
|
|
|
|
guac_terminal_set_columns(term, row, col, col + width - 1, &guac_char);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
void guac_terminal_commit_cursor(guac_terminal* term) {
|
|
|
|
guac_terminal_char* guac_char;
|
|
|
|
guac_terminal_buffer_row* row;
|
|
|
|
/* If no change, done */
|
|
if (term->cursor_visible && term->visible_cursor_row == term->cursor_row && term->visible_cursor_col == term->cursor_col)
|
|
return;
|
|
|
|
/* Clear cursor if it was visible */
|
|
if (term->visible_cursor_row != -1 && term->visible_cursor_col != -1) {
|
|
/* Get old row with cursor */
|
|
row = guac_terminal_buffer_get_row(term->buffer, term->visible_cursor_row, term->visible_cursor_col+1);
|
|
|
|
guac_char = &(row->characters[term->visible_cursor_col]);
|
|
guac_char->attributes.cursor = false;
|
|
guac_terminal_display_set_columns(term->display, term->visible_cursor_row + term->scroll_offset,
|
|
term->visible_cursor_col, term->visible_cursor_col, guac_char);
|
|
}
|
|
|
|
/* Set cursor if should be visible */
|
|
if (term->cursor_visible) {
|
|
/* Get new row with cursor */
|
|
row = guac_terminal_buffer_get_row(term->buffer, term->cursor_row, term->cursor_col+1);
|
|
|
|
guac_char = &(row->characters[term->cursor_col]);
|
|
guac_char->attributes.cursor = true;
|
|
guac_terminal_display_set_columns(term->display, term->cursor_row + term->scroll_offset,
|
|
term->cursor_col, term->cursor_col, guac_char);
|
|
|
|
term->visible_cursor_row = term->cursor_row;
|
|
term->visible_cursor_col = term->cursor_col;
|
|
}
|
|
|
|
/* Otherwise set visible position to a sentinel value */
|
|
else {
|
|
term->visible_cursor_row = -1;
|
|
term->visible_cursor_col = -1;
|
|
}
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
int guac_terminal_write(guac_terminal* term, const char* c, int size) {
|
|
|
|
guac_terminal_lock(term);
|
|
while (size > 0) {
|
|
|
|
/* Read and advance to next character */
|
|
char current = *(c++);
|
|
size--;
|
|
|
|
/* Write character to typescript, if any */
|
|
if (term->typescript != NULL)
|
|
guac_terminal_typescript_write(term->typescript, current);
|
|
|
|
/* Handle character and its meaning */
|
|
term->char_handler(term, current);
|
|
|
|
}
|
|
guac_terminal_unlock(term);
|
|
|
|
guac_terminal_notify(term);
|
|
return 0;
|
|
|
|
}
|
|
|
|
int guac_terminal_scroll_up(guac_terminal* term,
|
|
int start_row, int end_row, int amount) {
|
|
|
|
/* If scrolling entire display, update scroll offset */
|
|
if (start_row == 0 && end_row == term->term_height - 1) {
|
|
|
|
/* Scroll up visibly */
|
|
guac_terminal_display_copy_rows(term->display, start_row + amount, end_row, -amount);
|
|
|
|
/* Advance by scroll amount */
|
|
term->buffer->top += amount;
|
|
if (term->buffer->top >= term->buffer->available)
|
|
term->buffer->top -= term->buffer->available;
|
|
|
|
term->buffer->length += amount;
|
|
if (term->buffer->length > term->buffer->available)
|
|
term->buffer->length = term->buffer->available;
|
|
|
|
/* Reset scrollbar bounds */
|
|
guac_terminal_scrollbar_set_bounds(term->scrollbar,
|
|
-guac_terminal_get_available_scroll(term), 0);
|
|
|
|
/* Update cursor location if within region */
|
|
if (term->visible_cursor_row >= start_row &&
|
|
term->visible_cursor_row <= end_row)
|
|
term->visible_cursor_row -= amount;
|
|
|
|
/* Update selected region */
|
|
if (term->text_selected) {
|
|
term->selection_start_row -= amount;
|
|
term->selection_end_row -= amount;
|
|
}
|
|
|
|
}
|
|
|
|
/* Otherwise, just copy row data upwards */
|
|
else
|
|
guac_terminal_copy_rows(term, start_row + amount, end_row, -amount);
|
|
|
|
/* Clear new area */
|
|
guac_terminal_clear_range(term,
|
|
end_row - amount + 1, 0,
|
|
end_row, term->term_width - 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int guac_terminal_scroll_down(guac_terminal* term,
|
|
int start_row, int end_row, int amount) {
|
|
|
|
guac_terminal_copy_rows(term, start_row, end_row - amount, amount);
|
|
|
|
/* Clear new area */
|
|
guac_terminal_clear_range(term,
|
|
start_row, 0,
|
|
start_row + amount - 1, term->term_width - 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int guac_terminal_clear_columns(guac_terminal* term,
|
|
int row, int start_col, int end_col) {
|
|
|
|
/* Build space */
|
|
guac_terminal_char blank;
|
|
blank.value = 0;
|
|
blank.attributes = term->current_attributes;
|
|
blank.width = 1;
|
|
|
|
/* Clear */
|
|
guac_terminal_set_columns(term,
|
|
row, start_col, end_col, &blank);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
int guac_terminal_clear_range(guac_terminal* term,
|
|
int start_row, int start_col,
|
|
int end_row, int end_col) {
|
|
|
|
/* If not at far left, must clear sub-region to far right */
|
|
if (start_col > 0) {
|
|
|
|
/* Clear from start_col to far right */
|
|
guac_terminal_clear_columns(term,
|
|
start_row, start_col, term->term_width - 1);
|
|
|
|
/* One less row to clear */
|
|
start_row++;
|
|
}
|
|
|
|
/* If not at far right, must clear sub-region to far left */
|
|
if (end_col < term->term_width - 1) {
|
|
|
|
/* Clear from far left to end_col */
|
|
guac_terminal_clear_columns(term, end_row, 0, end_col);
|
|
|
|
/* One less row to clear */
|
|
end_row--;
|
|
|
|
}
|
|
|
|
/* Remaining region now guaranteed rectangular. Clear, if possible */
|
|
if (start_row <= end_row) {
|
|
|
|
int row;
|
|
for (row=start_row; row<=end_row; row++) {
|
|
|
|
/* Clear entire row */
|
|
guac_terminal_clear_columns(term, row, 0, term->term_width - 1);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
/**
|
|
* Returns whether the given character would be visible relative to the
|
|
* background of the given terminal.
|
|
*
|
|
* @param term
|
|
* The guac_terminal to test the character against.
|
|
*
|
|
* @param c
|
|
* The character being tested.
|
|
*
|
|
* @return
|
|
* true if the given character is different from the terminal background,
|
|
* false otherwise.
|
|
*/
|
|
static bool guac_terminal_is_visible(guac_terminal* term,
|
|
guac_terminal_char* c) {
|
|
|
|
/* Continuation characters are NEVER visible */
|
|
if (c->value == GUAC_CHAR_CONTINUATION)
|
|
return false;
|
|
|
|
/* Characters with glyphs are ALWAYS visible */
|
|
if (guac_terminal_has_glyph(c->value))
|
|
return true;
|
|
|
|
const guac_terminal_color* background;
|
|
|
|
/* Determine actual background color of character */
|
|
if (c->attributes.reverse != c->attributes.cursor)
|
|
background = &c->attributes.foreground;
|
|
else
|
|
background = &c->attributes.background;
|
|
|
|
/* Blank characters are visible if their background color differs from that
|
|
* of the terminal */
|
|
return guac_terminal_colorcmp(background,
|
|
&term->default_char.attributes.background) != 0;
|
|
|
|
}
|
|
|
|
void guac_terminal_scroll_display_down(guac_terminal* terminal,
|
|
int scroll_amount) {
|
|
|
|
int start_row, end_row;
|
|
int dest_row;
|
|
int row, column;
|
|
|
|
/* Limit scroll amount by size of scrollback buffer */
|
|
if (scroll_amount > terminal->scroll_offset)
|
|
scroll_amount = terminal->scroll_offset;
|
|
|
|
/* If not scrolling at all, don't bother trying */
|
|
if (scroll_amount <= 0)
|
|
return;
|
|
|
|
/* Shift screen up */
|
|
if (terminal->term_height > scroll_amount)
|
|
guac_terminal_display_copy_rows(terminal->display,
|
|
scroll_amount, terminal->term_height - 1,
|
|
-scroll_amount);
|
|
|
|
/* Advance by scroll amount */
|
|
terminal->scroll_offset -= scroll_amount;
|
|
guac_terminal_scrollbar_set_value(terminal->scrollbar, -terminal->scroll_offset);
|
|
|
|
/* Get row range */
|
|
end_row = terminal->term_height - terminal->scroll_offset - 1;
|
|
start_row = end_row - scroll_amount + 1;
|
|
dest_row = terminal->term_height - scroll_amount;
|
|
|
|
/* Draw new rows from scrollback */
|
|
for (row=start_row; row<=end_row; row++) {
|
|
|
|
/* Get row from scrollback */
|
|
guac_terminal_buffer_row* buffer_row =
|
|
guac_terminal_buffer_get_row(terminal->buffer, row, 0);
|
|
|
|
/* Clear row */
|
|
guac_terminal_display_set_columns(terminal->display,
|
|
dest_row, 0, terminal->display->width, &(terminal->default_char));
|
|
|
|
/* Draw row */
|
|
guac_terminal_char* current = buffer_row->characters;
|
|
for (column=0; column<buffer_row->length; column++) {
|
|
|
|
/* Only draw if not blank */
|
|
if (guac_terminal_is_visible(terminal, current))
|
|
guac_terminal_display_set_columns(terminal->display, dest_row, column, column, current);
|
|
|
|
current++;
|
|
|
|
}
|
|
|
|
/* Next row */
|
|
dest_row++;
|
|
|
|
}
|
|
|
|
guac_terminal_notify(terminal);
|
|
|
|
}
|
|
|
|
void guac_terminal_scroll_display_up(guac_terminal* terminal,
|
|
int scroll_amount) {
|
|
|
|
int start_row, end_row;
|
|
int dest_row;
|
|
int row, column;
|
|
|
|
/* Limit scroll amount by size of scrollback buffer */
|
|
int available_scroll = guac_terminal_get_available_scroll(terminal);
|
|
if (terminal->scroll_offset + scroll_amount > available_scroll)
|
|
scroll_amount = available_scroll - terminal->scroll_offset;
|
|
|
|
/* If not scrolling at all, don't bother trying */
|
|
if (scroll_amount <= 0)
|
|
return;
|
|
|
|
/* Shift screen down */
|
|
if (terminal->term_height > scroll_amount)
|
|
guac_terminal_display_copy_rows(terminal->display,
|
|
0, terminal->term_height - scroll_amount - 1,
|
|
scroll_amount);
|
|
|
|
/* Advance by scroll amount */
|
|
terminal->scroll_offset += scroll_amount;
|
|
guac_terminal_scrollbar_set_value(terminal->scrollbar, -terminal->scroll_offset);
|
|
|
|
/* Get row range */
|
|
start_row = -terminal->scroll_offset;
|
|
end_row = start_row + scroll_amount - 1;
|
|
dest_row = 0;
|
|
|
|
/* Draw new rows from scrollback */
|
|
for (row=start_row; row<=end_row; row++) {
|
|
|
|
/* Get row from scrollback */
|
|
guac_terminal_buffer_row* buffer_row =
|
|
guac_terminal_buffer_get_row(terminal->buffer, row, 0);
|
|
|
|
/* Clear row */
|
|
guac_terminal_display_set_columns(terminal->display,
|
|
dest_row, 0, terminal->display->width, &(terminal->default_char));
|
|
|
|
/* Draw row */
|
|
guac_terminal_char* current = buffer_row->characters;
|
|
for (column=0; column<buffer_row->length; column++) {
|
|
|
|
/* Only draw if not blank */
|
|
if (guac_terminal_is_visible(terminal, current))
|
|
guac_terminal_display_set_columns(terminal->display, dest_row, column, column, current);
|
|
|
|
current++;
|
|
|
|
}
|
|
|
|
/* Next row */
|
|
dest_row++;
|
|
|
|
}
|
|
|
|
guac_terminal_notify(terminal);
|
|
|
|
}
|
|
|
|
void guac_terminal_copy_columns(guac_terminal* terminal, int row,
|
|
int start_column, int end_column, int offset) {
|
|
|
|
guac_terminal_display_copy_columns(terminal->display, row + terminal->scroll_offset,
|
|
start_column, end_column, offset);
|
|
|
|
guac_terminal_buffer_copy_columns(terminal->buffer, row,
|
|
start_column, end_column, offset);
|
|
|
|
/* Clear selection if region is modified */
|
|
guac_terminal_select_touch(terminal, row, start_column, row, end_column);
|
|
|
|
/* Update cursor location if within region */
|
|
if (row == terminal->visible_cursor_row &&
|
|
terminal->visible_cursor_col >= start_column &&
|
|
terminal->visible_cursor_col <= end_column)
|
|
terminal->visible_cursor_col += offset;
|
|
|
|
/* Force breaks around destination region */
|
|
__guac_terminal_force_break(terminal, row, start_column + offset);
|
|
__guac_terminal_force_break(terminal, row, end_column + offset + 1);
|
|
|
|
}
|
|
|
|
void guac_terminal_copy_rows(guac_terminal* terminal,
|
|
int start_row, int end_row, int offset) {
|
|
|
|
guac_terminal_display_copy_rows(terminal->display,
|
|
start_row + terminal->scroll_offset, end_row + terminal->scroll_offset, offset);
|
|
|
|
guac_terminal_buffer_copy_rows(terminal->buffer,
|
|
start_row, end_row, offset);
|
|
|
|
/* Clear selection if region is modified */
|
|
guac_terminal_select_touch(terminal, start_row, 0, end_row,
|
|
terminal->term_width);
|
|
|
|
/* Update cursor location if within region */
|
|
if (terminal->visible_cursor_row >= start_row &&
|
|
terminal->visible_cursor_row <= end_row)
|
|
terminal->visible_cursor_row += offset;
|
|
|
|
}
|
|
|
|
void guac_terminal_set_columns(guac_terminal* terminal, int row,
|
|
int start_column, int end_column, guac_terminal_char* character) {
|
|
|
|
__guac_terminal_set_columns(terminal, row, start_column, end_column, character);
|
|
|
|
/* If visible cursor in current row, preserve state */
|
|
if (row == terminal->visible_cursor_row
|
|
&& terminal->visible_cursor_col >= start_column
|
|
&& terminal->visible_cursor_col <= end_column) {
|
|
|
|
/* Create copy of character with cursor attribute set */
|
|
guac_terminal_char cursor_character = *character;
|
|
cursor_character.attributes.cursor = true;
|
|
|
|
__guac_terminal_set_columns(terminal, row,
|
|
terminal->visible_cursor_col, terminal->visible_cursor_col, &cursor_character);
|
|
|
|
}
|
|
|
|
/* Force breaks around destination region */
|
|
__guac_terminal_force_break(terminal, row, start_column);
|
|
__guac_terminal_force_break(terminal, row, end_column + 1);
|
|
|
|
}
|
|
|
|
static void __guac_terminal_redraw_rect(guac_terminal* term, int start_row, int start_col, int end_row, int end_col) {
|
|
|
|
int row, col;
|
|
|
|
/* Redraw region */
|
|
for (row=start_row; row<=end_row; row++) {
|
|
|
|
guac_terminal_buffer_row* buffer_row =
|
|
guac_terminal_buffer_get_row(term->buffer, row - term->scroll_offset, 0);
|
|
|
|
/* Clear row */
|
|
guac_terminal_display_set_columns(term->display,
|
|
row, start_col, end_col, &(term->default_char));
|
|
|
|
/* Copy characters */
|
|
for (col=start_col; col <= end_col && col < buffer_row->length; col++) {
|
|
|
|
/* Only redraw if not blank */
|
|
guac_terminal_char* c = &(buffer_row->characters[col]);
|
|
if (guac_terminal_is_visible(term, c))
|
|
guac_terminal_display_set_columns(term->display, row, col, col, c);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* Internal terminal resize routine. Accepts width/height in CHARACTERS
|
|
* (not pixels like the public function).
|
|
*/
|
|
static void __guac_terminal_resize(guac_terminal* term, int width, int height) {
|
|
|
|
/* If height is decreasing, shift display up */
|
|
if (height < term->term_height) {
|
|
|
|
int shift_amount;
|
|
|
|
/* Get number of rows actually occupying terminal space */
|
|
int used_height = guac_terminal_effective_buffer_length(term);
|
|
if (used_height > term->term_height)
|
|
used_height = term->term_height;
|
|
|
|
shift_amount = used_height - height;
|
|
|
|
/* If the new terminal bottom covers N rows, shift up N rows */
|
|
if (shift_amount > 0) {
|
|
|
|
guac_terminal_display_copy_rows(term->display,
|
|
shift_amount, term->display->height - 1, -shift_amount);
|
|
|
|
/* Update buffer top and cursor row based on shift */
|
|
term->buffer->top += shift_amount;
|
|
term->cursor_row -= shift_amount;
|
|
if (term->visible_cursor_row != -1)
|
|
term->visible_cursor_row -= shift_amount;
|
|
|
|
/* Redraw characters within old region */
|
|
__guac_terminal_redraw_rect(term, height - shift_amount, 0, height-1, width-1);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/* Resize display */
|
|
guac_terminal_display_flush(term->display);
|
|
guac_terminal_display_resize(term->display, width, height);
|
|
|
|
/* Redraw any characters on right if widening */
|
|
if (width > term->term_width)
|
|
__guac_terminal_redraw_rect(term, 0, term->term_width-1, height-1, width-1);
|
|
|
|
/* If height is increasing, shift display down */
|
|
if (height > term->term_height) {
|
|
|
|
/* If undisplayed rows exist in the buffer, shift them into view */
|
|
int available_scroll = guac_terminal_get_available_scroll(term);
|
|
if (available_scroll > 0) {
|
|
|
|
/* If the new terminal bottom reveals N rows, shift down N rows */
|
|
int shift_amount = height - term->term_height;
|
|
|
|
/* The maximum amount we can shift is the number of undisplayed rows */
|
|
if (shift_amount > available_scroll)
|
|
shift_amount = available_scroll;
|
|
|
|
/* Update buffer top and cursor row based on shift */
|
|
term->buffer->top -= shift_amount;
|
|
term->cursor_row += shift_amount;
|
|
if (term->visible_cursor_row != -1)
|
|
term->visible_cursor_row += shift_amount;
|
|
|
|
/* If scrolled enough, use scroll to fulfill entire resize */
|
|
if (term->scroll_offset >= shift_amount) {
|
|
|
|
term->scroll_offset -= shift_amount;
|
|
guac_terminal_scrollbar_set_value(term->scrollbar, -term->scroll_offset);
|
|
|
|
/* Draw characters from scroll at bottom */
|
|
__guac_terminal_redraw_rect(term, term->term_height, 0, term->term_height + shift_amount - 1, width-1);
|
|
|
|
}
|
|
|
|
/* Otherwise, fulfill with as much scroll as possible */
|
|
else {
|
|
|
|
/* Draw characters from scroll at bottom */
|
|
__guac_terminal_redraw_rect(term, term->term_height, 0, term->term_height + term->scroll_offset - 1, width-1);
|
|
|
|
/* Update shift_amount and scroll based on new rows */
|
|
shift_amount -= term->scroll_offset;
|
|
term->scroll_offset = 0;
|
|
guac_terminal_scrollbar_set_value(term->scrollbar, -term->scroll_offset);
|
|
|
|
/* If anything remains, move screen as necessary */
|
|
if (shift_amount > 0) {
|
|
|
|
guac_terminal_display_copy_rows(term->display,
|
|
0, term->display->height - shift_amount - 1, shift_amount);
|
|
|
|
/* Draw characters at top from scroll */
|
|
__guac_terminal_redraw_rect(term, 0, 0, shift_amount - 1, width-1);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
} /* end if undisplayed rows exist */
|
|
|
|
}
|
|
|
|
/* Keep cursor on screen */
|
|
if (term->cursor_row < 0) term->cursor_row = 0;
|
|
if (term->cursor_row >= height) term->cursor_row = height-1;
|
|
if (term->cursor_col < 0) term->cursor_col = 0;
|
|
if (term->cursor_col >= width) term->cursor_col = width-1;
|
|
|
|
/* Commit new dimensions */
|
|
term->term_width = width;
|
|
term->term_height = height;
|
|
|
|
}
|
|
|
|
int guac_terminal_resize(guac_terminal* terminal, int width, int height) {
|
|
|
|
guac_terminal_display* display = terminal->display;
|
|
guac_client* client = display->client;
|
|
|
|
/* Acquire exclusive access to terminal */
|
|
guac_terminal_lock(terminal);
|
|
|
|
/* Calculate available text display area by character size */
|
|
int rows, columns;
|
|
calculate_rows_and_columns(terminal, height, width, &rows, &columns);
|
|
|
|
/* Calculate available display area in pixels */
|
|
int adjusted_height = height;
|
|
int adjusted_width = width;
|
|
calculate_height_and_width(terminal, rows, columns,
|
|
&adjusted_height, &adjusted_width);
|
|
|
|
/* Set size of available screen area */
|
|
terminal->outer_height = height;
|
|
terminal->outer_width = width;
|
|
|
|
/* Set pixel size */
|
|
terminal->height = adjusted_height;
|
|
terminal->width = adjusted_width;
|
|
|
|
/* Resize default layer to given pixel dimensions */
|
|
guac_terminal_repaint_default_layer(terminal, client->socket);
|
|
|
|
/* Resize terminal if row/column dimensions have changed */
|
|
if (columns != terminal->term_width || rows != terminal->term_height) {
|
|
/* Resize terminal and set the columns and rows on the terminal struct */
|
|
__guac_terminal_resize(terminal, columns, rows);
|
|
|
|
/* Reset scroll region */
|
|
terminal->scroll_end = rows - 1;
|
|
}
|
|
|
|
/* Notify scrollbar of resize */
|
|
guac_terminal_scrollbar_parent_resized(terminal->scrollbar,
|
|
terminal->outer_width, terminal->outer_height, terminal->term_height);
|
|
guac_terminal_scrollbar_set_bounds(terminal->scrollbar,
|
|
-guac_terminal_get_available_scroll(terminal), 0);
|
|
|
|
|
|
/* Release terminal */
|
|
guac_terminal_unlock(terminal);
|
|
|
|
guac_terminal_notify(terminal);
|
|
return 0;
|
|
|
|
}
|
|
|
|
void guac_terminal_flush(guac_terminal* terminal) {
|
|
|
|
/* Flush typescript if in use */
|
|
if (terminal->typescript != NULL)
|
|
guac_terminal_typescript_flush(terminal->typescript);
|
|
|
|
/* Flush pipe stream if automatic flushing is enabled */
|
|
if (terminal->pipe_stream_flags & GUAC_TERMINAL_PIPE_AUTOFLUSH)
|
|
guac_terminal_pipe_stream_flush(terminal);
|
|
|
|
/* Flush display state */
|
|
guac_terminal_select_redraw(terminal);
|
|
guac_terminal_commit_cursor(terminal);
|
|
guac_terminal_display_flush(terminal->display);
|
|
guac_terminal_scrollbar_flush(terminal->scrollbar);
|
|
|
|
}
|
|
|
|
void guac_terminal_lock(guac_terminal* terminal) {
|
|
pthread_mutex_lock(&(terminal->lock));
|
|
}
|
|
|
|
void guac_terminal_unlock(guac_terminal* terminal) {
|
|
pthread_mutex_unlock(&(terminal->lock));
|
|
}
|
|
|
|
int guac_terminal_send_data(guac_terminal* term, const char* data, int length) {
|
|
|
|
/* Block all other sources of input if input is coming from a stream */
|
|
if (term->input_stream != NULL)
|
|
return 0;
|
|
|
|
return guac_terminal_write_all(term->stdin_pipe_fd[1], data, length);
|
|
|
|
}
|
|
|
|
int guac_terminal_send_string(guac_terminal* term, const char* data) {
|
|
|
|
/* Block all other sources of input if input is coming from a stream */
|
|
if (term->input_stream != NULL)
|
|
return 0;
|
|
|
|
return guac_terminal_write_all(term->stdin_pipe_fd[1], data, strlen(data));
|
|
|
|
}
|
|
|
|
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)
|
|
term->mod_ctrl = pressed;
|
|
else if (keysym == 0xFFE9)
|
|
term->mod_alt = pressed;
|
|
else if (keysym == 0xFFE1)
|
|
term->mod_shift = pressed;
|
|
|
|
/* If key pressed */
|
|
else if (pressed) {
|
|
|
|
/* Ctrl+Shift+V shortcut for paste */
|
|
if (keysym == 'V' && term->mod_ctrl)
|
|
return guac_terminal_send_data(term, term->clipboard->buffer, term->clipboard->length);
|
|
|
|
/* 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;
|
|
|
|
}
|
|
|
|
int guac_terminal_send_key(guac_terminal* term, int keysym, int pressed) {
|
|
|
|
int result;
|
|
|
|
guac_terminal_lock(term);
|
|
result = __guac_terminal_send_key(term, keysym, pressed);
|
|
guac_terminal_unlock(term);
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
static int __guac_terminal_send_mouse(guac_terminal* term, guac_user* user,
|
|
int x, int y, int mask) {
|
|
|
|
/* 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;
|
|
}
|
|
|
|
/* Determine which buttons were just released and pressed */
|
|
int released_mask = term->mouse_mask & ~mask;
|
|
int pressed_mask = ~term->mouse_mask & mask;
|
|
|
|
/* Store current mouse location/state */
|
|
guac_common_cursor_update(term->cursor, user, x, y, mask);
|
|
|
|
/* Notify scrollbar, do not handle anything handled by scrollbar */
|
|
if (guac_terminal_scrollbar_handle_mouse(term->scrollbar, x, y, mask)) {
|
|
|
|
/* Set pointer cursor if mouse is over scrollbar */
|
|
if (term->current_cursor != GUAC_TERMINAL_CURSOR_POINTER) {
|
|
term->current_cursor = GUAC_TERMINAL_CURSOR_POINTER;
|
|
guac_common_cursor_set_pointer(term->cursor);
|
|
guac_terminal_notify(term);
|
|
}
|
|
|
|
guac_terminal_notify(term);
|
|
return 0;
|
|
|
|
}
|
|
|
|
term->mouse_mask = mask;
|
|
|
|
/* Show mouse cursor if not already shown */
|
|
if (term->current_cursor != GUAC_TERMINAL_CURSOR_IBAR) {
|
|
term->current_cursor = GUAC_TERMINAL_CURSOR_IBAR;
|
|
guac_common_cursor_set_ibar(term->cursor);
|
|
guac_terminal_notify(term);
|
|
}
|
|
|
|
/* Paste contents of clipboard on right or middle mouse button up */
|
|
if ((released_mask & GUAC_CLIENT_MOUSE_RIGHT) || (released_mask & GUAC_CLIENT_MOUSE_MIDDLE))
|
|
return guac_terminal_send_data(term, term->clipboard->buffer, term->clipboard->length);
|
|
|
|
/* If left mouse button was just released, stop selection */
|
|
if (released_mask & GUAC_CLIENT_MOUSE_LEFT)
|
|
guac_terminal_select_end(term);
|
|
|
|
/* Update selection state contextually while the left mouse button is
|
|
* pressed */
|
|
else if (mask & GUAC_CLIENT_MOUSE_LEFT) {
|
|
|
|
int row = y / term->display->char_height - term->scroll_offset;
|
|
int col = x / term->display->char_width;
|
|
|
|
/* If mouse button was already just pressed, start a new selection or
|
|
* resume the existing selection depending on whether shift is held */
|
|
if (pressed_mask & GUAC_CLIENT_MOUSE_LEFT) {
|
|
if (term->mod_shift)
|
|
guac_terminal_select_resume(term, row, col);
|
|
else
|
|
guac_terminal_select_start(term, row, col);
|
|
}
|
|
|
|
/* In all other cases, simply update the existing selection as long as
|
|
* the mouse button is pressed */
|
|
else
|
|
guac_terminal_select_update(term, row, col);
|
|
|
|
}
|
|
|
|
/* Scroll up if wheel moved up */
|
|
if (released_mask & GUAC_CLIENT_MOUSE_SCROLL_UP)
|
|
guac_terminal_scroll_display_up(term, GUAC_TERMINAL_WHEEL_SCROLL_AMOUNT);
|
|
|
|
/* Scroll down if wheel moved down */
|
|
if (released_mask & GUAC_CLIENT_MOUSE_SCROLL_DOWN)
|
|
guac_terminal_scroll_display_down(term, GUAC_TERMINAL_WHEEL_SCROLL_AMOUNT);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
int guac_terminal_send_mouse(guac_terminal* term, guac_user* user,
|
|
int x, int y, int mask) {
|
|
|
|
int result;
|
|
|
|
guac_terminal_lock(term);
|
|
result = __guac_terminal_send_mouse(term, user, x, y, mask);
|
|
guac_terminal_unlock(term);
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
void guac_terminal_scroll_handler(guac_terminal_scrollbar* scrollbar, int value) {
|
|
|
|
guac_terminal* terminal = (guac_terminal*) scrollbar->data;
|
|
|
|
/* Calculate change in scroll offset */
|
|
int delta = -value - terminal->scroll_offset;
|
|
|
|
/* Update terminal based on change in scroll offset */
|
|
if (delta < 0)
|
|
guac_terminal_scroll_display_down(terminal, -delta);
|
|
else if (delta > 0)
|
|
guac_terminal_scroll_display_up(terminal, delta);
|
|
|
|
/* Update scrollbar value */
|
|
guac_terminal_scrollbar_set_value(scrollbar, value);
|
|
|
|
}
|
|
|
|
int guac_terminal_sendf(guac_terminal* term, const char* format, ...) {
|
|
|
|
int written;
|
|
|
|
va_list ap;
|
|
char buffer[1024];
|
|
|
|
/* Block all other sources of input if input is coming from a stream */
|
|
if (term->input_stream != NULL)
|
|
return 0;
|
|
|
|
/* Print to buffer */
|
|
va_start(ap, format);
|
|
written = vsnprintf(buffer, sizeof(buffer)-1, format, ap);
|
|
va_end(ap);
|
|
|
|
if (written < 0)
|
|
return written;
|
|
|
|
/* Write to STDIN */
|
|
return guac_terminal_write_all(term->stdin_pipe_fd[1], buffer, written);
|
|
|
|
}
|
|
|
|
void guac_terminal_set_tab(guac_terminal* term, int column) {
|
|
|
|
int i;
|
|
|
|
/* Search for available space, set if available */
|
|
for (i=0; i<GUAC_TERMINAL_MAX_TABS; i++) {
|
|
|
|
/* Set tab if space free */
|
|
if (term->custom_tabs[i] == 0) {
|
|
term->custom_tabs[i] = column+1;
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
void guac_terminal_unset_tab(guac_terminal* term, int column) {
|
|
|
|
int i;
|
|
|
|
/* Search for given tab, unset if found */
|
|
for (i=0; i<GUAC_TERMINAL_MAX_TABS; i++) {
|
|
|
|
/* Unset tab if found */
|
|
if (term->custom_tabs[i] == column+1) {
|
|
term->custom_tabs[i] = 0;
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
void guac_terminal_clear_tabs(guac_terminal* term) {
|
|
term->tab_interval = 0;
|
|
memset(term->custom_tabs, 0, sizeof(term->custom_tabs));
|
|
}
|
|
|
|
int guac_terminal_next_tab(guac_terminal* term, int column) {
|
|
|
|
int i;
|
|
|
|
/* Determine tab stop from interval */
|
|
int tabstop;
|
|
if (term->tab_interval != 0)
|
|
tabstop = (column / term->tab_interval + 1) * term->tab_interval;
|
|
else
|
|
tabstop = term->term_width - 1;
|
|
|
|
/* Walk custom tabs, trying to find an earlier occurrence */
|
|
for (i=0; i<GUAC_TERMINAL_MAX_TABS; i++) {
|
|
|
|
int custom_tabstop = term->custom_tabs[i] - 1;
|
|
if (custom_tabstop != -1 && custom_tabstop > column && custom_tabstop < tabstop)
|
|
tabstop = custom_tabstop;
|
|
|
|
}
|
|
|
|
return tabstop;
|
|
}
|
|
|
|
void guac_terminal_pipe_stream_open(guac_terminal* term, const char* name,
|
|
int flags) {
|
|
|
|
guac_client* client = term->client;
|
|
guac_socket* socket = client->socket;
|
|
|
|
/* Close existing stream, if any */
|
|
guac_terminal_pipe_stream_close(term);
|
|
|
|
/* Allocate and assign new pipe stream */
|
|
term->pipe_stream = guac_client_alloc_stream(client);
|
|
term->pipe_buffer_length = 0;
|
|
term->pipe_stream_flags = flags;
|
|
|
|
/* Open new pipe stream */
|
|
guac_protocol_send_pipe(socket, term->pipe_stream, "text/plain", name);
|
|
|
|
/* Log redirect at debug level */
|
|
guac_client_log(client, GUAC_LOG_DEBUG, "Terminal output now directed to "
|
|
"pipe \"%s\" (flags=%i).", name, flags);
|
|
|
|
}
|
|
|
|
void guac_terminal_pipe_stream_write(guac_terminal* term, char c) {
|
|
|
|
/* Append byte to buffer only if pipe is open */
|
|
if (term->pipe_stream != NULL) {
|
|
|
|
/* Flush buffer if no space is available */
|
|
if (term->pipe_buffer_length == sizeof(term->pipe_buffer))
|
|
guac_terminal_pipe_stream_flush(term);
|
|
|
|
/* Append single byte to buffer */
|
|
term->pipe_buffer[term->pipe_buffer_length++] = c;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
void guac_terminal_pipe_stream_flush(guac_terminal* term) {
|
|
|
|
guac_client* client = term->client;
|
|
guac_socket* socket = client->socket;
|
|
guac_stream* pipe_stream = term->pipe_stream;
|
|
|
|
/* Write blob if data exists in buffer */
|
|
if (pipe_stream != NULL && term->pipe_buffer_length > 0) {
|
|
guac_protocol_send_blob(socket, pipe_stream,
|
|
term->pipe_buffer, term->pipe_buffer_length);
|
|
term->pipe_buffer_length = 0;
|
|
}
|
|
|
|
}
|
|
|
|
void guac_terminal_pipe_stream_close(guac_terminal* term) {
|
|
|
|
guac_client* client = term->client;
|
|
guac_socket* socket = client->socket;
|
|
guac_stream* pipe_stream = term->pipe_stream;
|
|
|
|
/* Close any existing pipe */
|
|
if (pipe_stream != NULL) {
|
|
|
|
/* Write end of stream */
|
|
guac_terminal_pipe_stream_flush(term);
|
|
guac_protocol_send_end(socket, pipe_stream);
|
|
|
|
/* Destroy stream */
|
|
guac_client_free_stream(client, pipe_stream);
|
|
term->pipe_stream = NULL;
|
|
|
|
/* Log redirect at debug level */
|
|
guac_client_log(client, GUAC_LOG_DEBUG,
|
|
"Terminal output now redirected to display.");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
int guac_terminal_create_typescript(guac_terminal* term, const char* path,
|
|
const char* name, int create_path) {
|
|
|
|
/* Create typescript */
|
|
term->typescript = guac_terminal_typescript_alloc(path, name, create_path);
|
|
|
|
/* Log failure */
|
|
if (term->typescript == NULL) {
|
|
guac_client_log(term->client, GUAC_LOG_ERROR,
|
|
"Creation of typescript failed: %s", strerror(errno));
|
|
return 1;
|
|
}
|
|
|
|
/* If typescript was successfully created, log filenames */
|
|
guac_client_log(term->client, GUAC_LOG_INFO,
|
|
"Typescript of terminal session will be saved to \"%s\". "
|
|
"Timing file is \"%s\".",
|
|
term->typescript->data_filename,
|
|
term->typescript->timing_filename);
|
|
|
|
/* Typescript creation succeeded */
|
|
return 0;
|
|
|
|
}
|
|
|
|
void guac_terminal_dup(guac_terminal* term, guac_user* user,
|
|
guac_socket* socket) {
|
|
|
|
/* Synchronize display state with new user */
|
|
guac_terminal_repaint_default_layer(term, socket);
|
|
guac_terminal_display_dup(term->display, user, socket);
|
|
|
|
/* Synchronize mouse cursor */
|
|
guac_common_cursor_dup(term->cursor, user, socket);
|
|
|
|
/* Paint scrollbar for joining user */
|
|
guac_terminal_scrollbar_dup(term->scrollbar, user, socket);
|
|
|
|
}
|
|
|
|
void guac_terminal_apply_color_scheme(guac_terminal* terminal,
|
|
const char* color_scheme) {
|
|
|
|
guac_client* client = terminal->client;
|
|
guac_terminal_char* default_char = &terminal->default_char;
|
|
guac_terminal_display* display = terminal->display;
|
|
|
|
/* Reinitialize default terminal colors with values from color scheme */
|
|
guac_terminal_parse_color_scheme(client, color_scheme,
|
|
&default_char->attributes.foreground,
|
|
&default_char->attributes.background,
|
|
display->default_palette);
|
|
|
|
/* Reinitialize default attributes of buffer and display */
|
|
guac_terminal_display_reset_palette(display);
|
|
display->default_foreground = default_char->attributes.foreground;
|
|
display->default_background = default_char->attributes.background;
|
|
|
|
/* Redraw terminal text and background */
|
|
guac_terminal_repaint_default_layer(terminal, client->socket);
|
|
__guac_terminal_redraw_rect(terminal, 0, 0,
|
|
terminal->term_height - 1,
|
|
terminal->term_width - 1);
|
|
|
|
/* Acquire exclusive access to terminal */
|
|
guac_terminal_lock(terminal);
|
|
|
|
/* Update stored copy of color scheme */
|
|
free((char*) terminal->color_scheme);
|
|
terminal->color_scheme = strdup(color_scheme);
|
|
|
|
/* Release terminal */
|
|
guac_terminal_unlock(terminal);
|
|
|
|
guac_terminal_notify(terminal);
|
|
|
|
}
|
|
|
|
const char* guac_terminal_get_color_scheme(guac_terminal* terminal) {
|
|
return terminal->color_scheme;
|
|
}
|
|
|
|
void guac_terminal_apply_font(guac_terminal* terminal, const char* font_name,
|
|
int font_size, int dpi) {
|
|
|
|
guac_client* client = terminal->client;
|
|
guac_terminal_display* display = terminal->display;
|
|
|
|
if (guac_terminal_display_set_font(display, font_name, font_size, dpi))
|
|
return;
|
|
|
|
/* Resize terminal to fit available region, now that font metrics may be
|
|
* different */
|
|
guac_terminal_resize(terminal, terminal->outer_width,
|
|
terminal->outer_height);
|
|
|
|
/* Redraw terminal text and background */
|
|
guac_terminal_repaint_default_layer(terminal, client->socket);
|
|
__guac_terminal_redraw_rect(terminal, 0, 0,
|
|
terminal->term_height - 1,
|
|
terminal->term_width - 1);
|
|
|
|
/* Acquire exclusive access to terminal */
|
|
guac_terminal_lock(terminal);
|
|
|
|
/* Update stored copy of font name, if changed */
|
|
if (font_name != NULL)
|
|
terminal->font_name = strdup(font_name);
|
|
|
|
/* Update stored copy of font size, if changed */
|
|
if (font_size != -1)
|
|
terminal->font_size = font_size;
|
|
|
|
/* Release terminal */
|
|
guac_terminal_unlock(terminal);
|
|
|
|
guac_terminal_notify(terminal);
|
|
|
|
}
|
|
|
|
void guac_terminal_set_upload_path_handler(guac_terminal* terminal,
|
|
guac_terminal_upload_path_handler* upload_path_handler) {
|
|
terminal->upload_path_handler = upload_path_handler;
|
|
}
|
|
|
|
void guac_terminal_set_file_download_handler(guac_terminal* terminal,
|
|
guac_terminal_file_download_handler* file_download_handler) {
|
|
terminal->file_download_handler = file_download_handler;
|
|
}
|
|
|
|
const char* guac_terminal_get_font_name(guac_terminal* terminal) {
|
|
return terminal->font_name;
|
|
}
|
|
|
|
int guac_terminal_get_font_size(guac_terminal* terminal) {
|
|
return terminal->font_size;
|
|
}
|
|
|
|
int guac_terminal_get_mod_ctrl(guac_terminal* terminal) {
|
|
return terminal->mod_ctrl;
|
|
}
|
|
|
|
void guac_terminal_clipboard_reset(guac_terminal* terminal,
|
|
const char* mimetype) {
|
|
guac_common_clipboard_reset(terminal->clipboard, mimetype);
|
|
}
|
|
|
|
void guac_terminal_clipboard_append(guac_terminal* terminal,
|
|
const char* data, int length) {
|
|
guac_common_clipboard_append(terminal->clipboard, data, length);
|
|
}
|
|
|
|
void guac_terminal_remove_user(guac_terminal* terminal, guac_user* user) {
|
|
|
|
/* Remove the user from the terminal cursor */
|
|
guac_common_cursor_remove_user(terminal->cursor, user);
|
|
} |