1368 lines
41 KiB
C
1368 lines
41 KiB
C
/*
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* Copyright (C) 2013 Glyptodon LLC
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "config.h"
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#include "error.h"
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#include "layer.h"
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#include "palette.h"
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#include "protocol.h"
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#include "socket.h"
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#include "stream.h"
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#include "unicode.h"
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#include <png.h>
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#include <cairo/cairo.h>
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#ifdef HAVE_PNGSTRUCT_H
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#include <pngstruct.h>
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#endif
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#include <inttypes.h>
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#include <setjmp.h>
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#include <stdarg.h>
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#include <stdint.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/types.h>
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/* Output formatting functions */
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ssize_t __guac_socket_write_length_string(guac_socket* socket, const char* str) {
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return
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guac_socket_write_int(socket, guac_utf8_strlen(str))
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|| guac_socket_write_string(socket, ".")
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|| guac_socket_write_string(socket, str);
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}
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ssize_t __guac_socket_write_length_int(guac_socket* socket, int64_t i) {
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char buffer[128];
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snprintf(buffer, sizeof(buffer), "%"PRIi64, i);
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return __guac_socket_write_length_string(socket, buffer);
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}
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ssize_t __guac_socket_write_length_double(guac_socket* socket, double d) {
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char buffer[128];
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snprintf(buffer, sizeof(buffer), "%.16g", d);
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return __guac_socket_write_length_string(socket, buffer);
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}
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/* PNG output formatting */
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typedef struct __guac_socket_write_png_data {
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guac_socket* socket;
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char* buffer;
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int buffer_size;
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int data_size;
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} __guac_socket_write_png_data;
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cairo_status_t __guac_socket_write_png_cairo(void* closure, const unsigned char* data, unsigned int length) {
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__guac_socket_write_png_data* png_data = (__guac_socket_write_png_data*) closure;
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/* Calculate next buffer size */
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int next_size = png_data->data_size + length;
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/* If need resizing, double buffer size until big enough */
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if (next_size > png_data->buffer_size) {
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char* new_buffer;
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do {
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png_data->buffer_size <<= 1;
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} while (next_size > png_data->buffer_size);
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/* Resize buffer */
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new_buffer = realloc(png_data->buffer, png_data->buffer_size);
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png_data->buffer = new_buffer;
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}
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/* Append data to buffer */
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memcpy(png_data->buffer + png_data->data_size, data, length);
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png_data->data_size += length;
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return CAIRO_STATUS_SUCCESS;
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}
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int __guac_socket_write_length_png_cairo(guac_socket* socket, cairo_surface_t* surface) {
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__guac_socket_write_png_data png_data;
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int base64_length;
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/* Write surface */
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png_data.socket = socket;
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png_data.buffer_size = 8192;
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png_data.buffer = malloc(png_data.buffer_size);
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png_data.data_size = 0;
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if (cairo_surface_write_to_png_stream(surface, __guac_socket_write_png_cairo, &png_data) != CAIRO_STATUS_SUCCESS) {
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guac_error = GUAC_STATUS_INTERNAL_ERROR;
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guac_error_message = "Cairo PNG backend failed";
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return -1;
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}
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base64_length = (png_data.data_size + 2) / 3 * 4;
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/* Write length and data */
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if (
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guac_socket_write_int(socket, base64_length)
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|| guac_socket_write_string(socket, ".")
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|| guac_socket_write_base64(socket, png_data.buffer, png_data.data_size)
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|| guac_socket_flush_base64(socket)) {
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free(png_data.buffer);
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return -1;
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}
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free(png_data.buffer);
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return 0;
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}
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void __guac_socket_write_png(png_structp png,
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png_bytep data, png_size_t length) {
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/* Get png buffer structure */
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__guac_socket_write_png_data* png_data;
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#ifdef HAVE_PNG_GET_IO_PTR
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png_data = (__guac_socket_write_png_data*) png_get_io_ptr(png);
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#else
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png_data = (__guac_socket_write_png_data*) png->io_ptr;
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#endif
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/* Calculate next buffer size */
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int next_size = png_data->data_size + length;
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/* If need resizing, double buffer size until big enough */
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if (next_size > png_data->buffer_size) {
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char* new_buffer;
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do {
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png_data->buffer_size <<= 1;
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} while (next_size > png_data->buffer_size);
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/* Resize buffer */
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new_buffer = realloc(png_data->buffer, png_data->buffer_size);
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png_data->buffer = new_buffer;
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}
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/* Append data to buffer */
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memcpy(png_data->buffer + png_data->data_size, data, length);
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png_data->data_size += length;
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}
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void __guac_socket_flush_png(png_structp png) {
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/* Dummy function */
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}
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int __guac_socket_write_length_png(guac_socket* socket, cairo_surface_t* surface) {
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png_structp png;
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png_infop png_info;
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png_byte** png_rows;
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int bpp;
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int x, y;
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__guac_socket_write_png_data png_data;
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int base64_length;
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/* Get image surface properties and data */
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cairo_format_t format = cairo_image_surface_get_format(surface);
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int width = cairo_image_surface_get_width(surface);
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int height = cairo_image_surface_get_height(surface);
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int stride = cairo_image_surface_get_stride(surface);
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unsigned char* data = cairo_image_surface_get_data(surface);
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/* If not RGB24, use Cairo PNG writer */
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if (format != CAIRO_FORMAT_RGB24 || data == NULL)
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return __guac_socket_write_length_png_cairo(socket, surface);
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/* Flush pending operations to surface */
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cairo_surface_flush(surface);
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/* Attempt to build palette */
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guac_palette* palette = guac_palette_alloc(surface);
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/* If not possible, resort to Cairo PNG writer */
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if (palette == NULL)
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return __guac_socket_write_length_png_cairo(socket, surface);
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/* Calculate BPP from palette size */
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if (palette->size <= 2) bpp = 1;
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else if (palette->size <= 4) bpp = 2;
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else if (palette->size <= 16) bpp = 4;
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else bpp = 8;
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/* Set up PNG writer */
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png = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
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if (!png) {
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guac_error = GUAC_STATUS_INTERNAL_ERROR;
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guac_error_message = "libpng failed to create write structure";
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return -1;
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}
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png_info = png_create_info_struct(png);
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if (!png_info) {
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png_destroy_write_struct(&png, NULL);
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guac_error = GUAC_STATUS_INTERNAL_ERROR;
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guac_error_message = "libpng failed to create info structure";
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return -1;
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}
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/* Set error handler */
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if (setjmp(png_jmpbuf(png))) {
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png_destroy_write_struct(&png, &png_info);
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guac_error = GUAC_STATUS_IO_ERROR;
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guac_error_message = "libpng output error";
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return -1;
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}
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/* Set up buffer structure */
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png_data.socket = socket;
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png_data.buffer_size = 8192;
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png_data.buffer = malloc(png_data.buffer_size);
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png_data.data_size = 0;
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/* Set up writer */
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png_set_write_fn(png, &png_data,
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__guac_socket_write_png,
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__guac_socket_flush_png);
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/* Copy data from surface into PNG data */
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png_rows = (png_byte**) malloc(sizeof(png_byte*) * height);
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for (y=0; y<height; y++) {
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/* Allocate new PNG row */
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png_byte* row = (png_byte*) malloc(sizeof(png_byte) * width);
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png_rows[y] = row;
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/* Copy data from surface into current row */
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for (x=0; x<width; x++) {
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/* Get pixel color */
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int color = ((uint32_t*) data)[x] & 0xFFFFFF;
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/* Set index in row */
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row[x] = guac_palette_find(palette, color);
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}
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/* Advance to next data row */
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data += stride;
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}
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/* Write image info */
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png_set_IHDR(
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png,
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png_info,
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width,
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height,
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bpp,
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PNG_COLOR_TYPE_PALETTE,
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PNG_INTERLACE_NONE,
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PNG_COMPRESSION_TYPE_DEFAULT,
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PNG_FILTER_TYPE_DEFAULT
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);
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/* Write palette */
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png_set_PLTE(png, png_info, palette->colors, palette->size);
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/* Write image */
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png_set_rows(png, png_info, png_rows);
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png_write_png(png, png_info, PNG_TRANSFORM_PACKING, NULL);
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/* Finish write */
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png_destroy_write_struct(&png, &png_info);
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/* Free palette */
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guac_palette_free(palette);
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/* Free PNG data */
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for (y=0; y<height; y++)
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free(png_rows[y]);
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free(png_rows);
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base64_length = (png_data.data_size + 2) / 3 * 4;
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/* Write length and data */
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if (
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guac_socket_write_int(socket, base64_length)
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|| guac_socket_write_string(socket, ".")
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|| guac_socket_write_base64(socket, png_data.buffer, png_data.data_size)
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|| guac_socket_flush_base64(socket)) {
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free(png_data.buffer);
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return -1;
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}
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free(png_data.buffer);
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return 0;
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}
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/* Protocol functions */
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int guac_protocol_send_ack(guac_socket* socket, guac_stream* stream,
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const char* error, guac_protocol_status status) {
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int ret_val;
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guac_socket_instruction_begin(socket);
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ret_val =
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guac_socket_write_string(socket, "3.ack,")
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|| __guac_socket_write_length_int(socket, stream->index)
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|| guac_socket_write_string(socket, ",")
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|| __guac_socket_write_length_string(socket, error)
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|| guac_socket_write_string(socket, ",")
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|| __guac_socket_write_length_int(socket, status)
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|| guac_socket_write_string(socket, ";");
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guac_socket_instruction_end(socket);
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return ret_val;
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}
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static int __guac_protocol_send_args(guac_socket* socket, const char** args) {
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int i;
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if (guac_socket_write_string(socket, "4.args")) return -1;
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for (i=0; args[i] != NULL; i++) {
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if (guac_socket_write_string(socket, ","))
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return -1;
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if (__guac_socket_write_length_string(socket, args[i]))
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return -1;
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}
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return guac_socket_write_string(socket, ";");
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}
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int guac_protocol_send_args(guac_socket* socket, const char** args) {
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int ret_val;
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guac_socket_instruction_begin(socket);
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ret_val = __guac_protocol_send_args(socket, args);
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guac_socket_instruction_end(socket);
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return ret_val;
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}
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int guac_protocol_send_arc(guac_socket* socket, const guac_layer* layer,
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int x, int y, int radius, double startAngle, double endAngle,
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int negative) {
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int ret_val;
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guac_socket_instruction_begin(socket);
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ret_val =
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guac_socket_write_string(socket, "3.arc,")
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|| __guac_socket_write_length_int(socket, layer->index)
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|| guac_socket_write_string(socket, ",")
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|| __guac_socket_write_length_int(socket, x)
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|| guac_socket_write_string(socket, ",")
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|| __guac_socket_write_length_int(socket, y)
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|| guac_socket_write_string(socket, ",")
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|| __guac_socket_write_length_int(socket, radius)
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|| guac_socket_write_string(socket, ",")
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|| __guac_socket_write_length_double(socket, startAngle)
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|| guac_socket_write_string(socket, ",")
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|| __guac_socket_write_length_double(socket, endAngle)
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|| guac_socket_write_string(socket, ",")
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|| guac_socket_write_string(socket, negative ? "1.1" : "1.0")
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|| guac_socket_write_string(socket, ";");
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guac_socket_instruction_end(socket);
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return ret_val;
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}
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int guac_protocol_send_audio(guac_socket* socket, const guac_stream* stream,
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int channel, const char* mimetype, double duration) {
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int ret_val;
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guac_socket_instruction_begin(socket);
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ret_val =
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guac_socket_write_string(socket, "5.audio,")
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|| __guac_socket_write_length_int(socket, stream->index)
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|| guac_socket_write_string(socket, ",")
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|| __guac_socket_write_length_int(socket, channel)
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|| guac_socket_write_string(socket, ",")
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|| __guac_socket_write_length_string(socket, mimetype)
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|| guac_socket_write_string(socket, ",")
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|| __guac_socket_write_length_double(socket, duration)
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|| guac_socket_write_string(socket, ";");
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guac_socket_instruction_end(socket);
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return ret_val;
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}
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int guac_protocol_send_blob(guac_socket* socket, const guac_stream* stream,
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void* data, int count) {
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int base64_length = (count + 2) / 3 * 4;
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int ret_val;
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guac_socket_instruction_begin(socket);
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ret_val =
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guac_socket_write_string(socket, "4.blob,")
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|| __guac_socket_write_length_int(socket, stream->index)
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|| guac_socket_write_string(socket, ",")
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|| guac_socket_write_int(socket, base64_length)
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|| guac_socket_write_string(socket, ".")
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|| guac_socket_write_base64(socket, data, count)
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|| guac_socket_flush_base64(socket)
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|| guac_socket_write_string(socket, ";");
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guac_socket_instruction_end(socket);
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return ret_val;
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}
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int guac_protocol_send_cfill(guac_socket* socket,
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guac_composite_mode mode, const guac_layer* layer,
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int r, int g, int b, int a) {
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int ret_val;
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guac_socket_instruction_begin(socket);
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ret_val =
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guac_socket_write_string(socket, "5.cfill,")
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|| __guac_socket_write_length_int(socket, mode)
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|| guac_socket_write_string(socket, ",")
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|| __guac_socket_write_length_int(socket, layer->index)
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|| guac_socket_write_string(socket, ",")
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|| __guac_socket_write_length_int(socket, r)
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|| guac_socket_write_string(socket, ",")
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|| __guac_socket_write_length_int(socket, g)
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|| guac_socket_write_string(socket, ",")
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|| __guac_socket_write_length_int(socket, b)
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|| guac_socket_write_string(socket, ",")
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|| __guac_socket_write_length_int(socket, a)
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|| guac_socket_write_string(socket, ";");
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guac_socket_instruction_end(socket);
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return ret_val;
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}
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int guac_protocol_send_close(guac_socket* socket, const guac_layer* layer) {
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int ret_val;
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guac_socket_instruction_begin(socket);
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ret_val =
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guac_socket_write_string(socket, "5.close,")
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|| __guac_socket_write_length_int(socket, layer->index)
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|| guac_socket_write_string(socket, ";");
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guac_socket_instruction_end(socket);
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return ret_val;
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}
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static int __guac_protocol_send_connect(guac_socket* socket, const char** args) {
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int i;
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if (guac_socket_write_string(socket, "7.connect")) return -1;
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for (i=0; args[i] != NULL; i++) {
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|
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if (guac_socket_write_string(socket, ","))
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return -1;
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|
|
if (__guac_socket_write_length_string(socket, args[i]))
|
|
return -1;
|
|
|
|
}
|
|
|
|
return guac_socket_write_string(socket, ";");
|
|
|
|
}
|
|
|
|
int guac_protocol_send_connect(guac_socket* socket, const char** args) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val = __guac_protocol_send_connect(socket, args);
|
|
guac_socket_instruction_end(socket);
|
|
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_clip(guac_socket* socket, const guac_layer* layer) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "4.clip,")
|
|
|| __guac_socket_write_length_int(socket, layer->index)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_clipboard(guac_socket* socket, const guac_stream* stream,
|
|
const char* mimetype) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "9.clipboard,")
|
|
|| __guac_socket_write_length_int(socket, stream->index)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_string(socket, mimetype)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_copy(guac_socket* socket,
|
|
const guac_layer* srcl, int srcx, int srcy, int w, int h,
|
|
guac_composite_mode mode, const guac_layer* dstl, int dstx, int dsty) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "4.copy,")
|
|
|| __guac_socket_write_length_int(socket, srcl->index)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, srcx)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, srcy)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, w)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, h)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, mode)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, dstl->index)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, dstx)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, dsty)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_cstroke(guac_socket* socket,
|
|
guac_composite_mode mode, const guac_layer* layer,
|
|
guac_line_cap_style cap, guac_line_join_style join, int thickness,
|
|
int r, int g, int b, int a) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "7.cstroke,")
|
|
|| __guac_socket_write_length_int(socket, mode)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, layer->index)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, cap)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, join)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, thickness)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, r)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, g)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, b)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, a)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_cursor(guac_socket* socket, int x, int y,
|
|
const guac_layer* srcl, int srcx, int srcy, int w, int h) {
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "6.cursor,")
|
|
|| __guac_socket_write_length_int(socket, x)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, y)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, srcl->index)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, srcx)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, srcy)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, w)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, h)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_curve(guac_socket* socket, const guac_layer* layer,
|
|
int cp1x, int cp1y, int cp2x, int cp2y, int x, int y) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "5.curve,")
|
|
|| __guac_socket_write_length_int(socket, layer->index)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, cp1x)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, cp1y)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, cp2x)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, cp2y)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, x)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, y)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_disconnect(guac_socket* socket) {
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val = guac_socket_write_string(socket, "10.disconnect;");
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_dispose(guac_socket* socket, const guac_layer* layer) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "7.dispose,")
|
|
|| __guac_socket_write_length_int(socket, layer->index)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_distort(guac_socket* socket, const guac_layer* layer,
|
|
double a, double b, double c,
|
|
double d, double e, double f) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "7.distort,")
|
|
|| __guac_socket_write_length_int(socket, layer->index)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_double(socket, a)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_double(socket, b)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_double(socket, c)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_double(socket, d)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_double(socket, e)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_double(socket, f)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_end(guac_socket* socket, const guac_stream* stream) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "3.end,")
|
|
|| __guac_socket_write_length_int(socket, stream->index)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_error(guac_socket* socket, const char* error,
|
|
guac_protocol_status status) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "5.error,")
|
|
|| __guac_socket_write_length_string(socket, error)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, status)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int vguac_protocol_send_log(guac_socket* socket, const char* format,
|
|
va_list args) {
|
|
|
|
int ret_val;
|
|
|
|
/* Copy log message into buffer */
|
|
char message[4096];
|
|
vsnprintf(message, sizeof(message), format, args);
|
|
|
|
/* Log to instruction */
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "3.log,")
|
|
|| __guac_socket_write_length_string(socket, message)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_log(guac_socket* socket, const char* format, ...) {
|
|
|
|
int ret_val;
|
|
|
|
va_list args;
|
|
va_start(args, format);
|
|
ret_val = vguac_protocol_send_log(socket, format, args);
|
|
va_end(args);
|
|
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_file(guac_socket* socket, const guac_stream* stream,
|
|
const char* mimetype, const char* name) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "4.file,")
|
|
|| __guac_socket_write_length_int(socket, stream->index)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_string(socket, mimetype)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_string(socket, name)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_identity(guac_socket* socket, const guac_layer* layer) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "8.identity,")
|
|
|| __guac_socket_write_length_int(socket, layer->index)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_lfill(guac_socket* socket,
|
|
guac_composite_mode mode, const guac_layer* layer,
|
|
const guac_layer* srcl) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "5.lfill,")
|
|
|| __guac_socket_write_length_int(socket, mode)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, layer->index)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, srcl->index)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_line(guac_socket* socket, const guac_layer* layer,
|
|
int x, int y) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "4.line,")
|
|
|| __guac_socket_write_length_int(socket, layer->index)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, x)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, y)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_lstroke(guac_socket* socket,
|
|
guac_composite_mode mode, const guac_layer* layer,
|
|
guac_line_cap_style cap, guac_line_join_style join, int thickness,
|
|
const guac_layer* srcl) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "7.lstroke,")
|
|
|| __guac_socket_write_length_int(socket, mode)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, layer->index)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, cap)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, join)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, thickness)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, srcl->index)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_move(guac_socket* socket, const guac_layer* layer,
|
|
const guac_layer* parent, int x, int y, int z) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "4.move,")
|
|
|| __guac_socket_write_length_int(socket, layer->index)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, parent->index)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, x)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, y)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, z)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_name(guac_socket* socket, const char* name) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "4.name,")
|
|
|| __guac_socket_write_length_string(socket, name)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_nest(guac_socket* socket, int index,
|
|
const char* data) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "4.nest,")
|
|
|| __guac_socket_write_length_int(socket, index)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_string(socket, data)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_nop(guac_socket* socket) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val = guac_socket_write_string(socket, "3.nop;");
|
|
guac_socket_instruction_end(socket);
|
|
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_pipe(guac_socket* socket, const guac_stream* stream,
|
|
const char* mimetype, const char* name) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "4.pipe,")
|
|
|| __guac_socket_write_length_int(socket, stream->index)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_string(socket, mimetype)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_string(socket, name)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_png(guac_socket* socket, guac_composite_mode mode,
|
|
const guac_layer* layer, int x, int y, cairo_surface_t* surface) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "3.png,")
|
|
|| __guac_socket_write_length_int(socket, mode)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, layer->index)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, x)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, y)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_png(socket, surface)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_pop(guac_socket* socket, const guac_layer* layer) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "3.pop,")
|
|
|| __guac_socket_write_length_int(socket, layer->index)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_push(guac_socket* socket, const guac_layer* layer) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "4.push,")
|
|
|| __guac_socket_write_length_int(socket, layer->index)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_ready(guac_socket* socket, const char* id) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "5.ready,")
|
|
|| __guac_socket_write_length_string(socket, id)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_rect(guac_socket* socket,
|
|
const guac_layer* layer, int x, int y, int width, int height) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "4.rect,")
|
|
|| __guac_socket_write_length_int(socket, layer->index)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, x)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, y)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, width)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, height)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_reset(guac_socket* socket, const guac_layer* layer) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "5.reset,")
|
|
|| __guac_socket_write_length_int(socket, layer->index)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_set(guac_socket* socket, const guac_layer* layer,
|
|
const char* name, const char* value) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "3.set,")
|
|
|| __guac_socket_write_length_int(socket, layer->index)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_string(socket, name)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_string(socket, value)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_select(guac_socket* socket, const char* protocol) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "6.select,")
|
|
|| __guac_socket_write_length_string(socket, protocol)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_shade(guac_socket* socket, const guac_layer* layer,
|
|
int a) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "5.shade,")
|
|
|| __guac_socket_write_length_int(socket, layer->index)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, a)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_size(guac_socket* socket, const guac_layer* layer,
|
|
int w, int h) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "4.size,")
|
|
|| __guac_socket_write_length_int(socket, layer->index)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, w)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, h)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_start(guac_socket* socket, const guac_layer* layer,
|
|
int x, int y) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "5.start,")
|
|
|| __guac_socket_write_length_int(socket, layer->index)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, x)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, y)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_sync(guac_socket* socket, guac_timestamp timestamp) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "4.sync,")
|
|
|| __guac_socket_write_length_int(socket, timestamp)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_transfer(guac_socket* socket,
|
|
const guac_layer* srcl, int srcx, int srcy, int w, int h,
|
|
guac_transfer_function fn, const guac_layer* dstl, int dstx, int dsty) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "8.transfer,")
|
|
|| __guac_socket_write_length_int(socket, srcl->index)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, srcx)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, srcy)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, w)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, h)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, fn)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, dstl->index)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, dstx)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, dsty)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_transform(guac_socket* socket, const guac_layer* layer,
|
|
double a, double b, double c,
|
|
double d, double e, double f) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "9.transform,")
|
|
|| __guac_socket_write_length_int(socket, layer->index)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_double(socket, a)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_double(socket, b)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_double(socket, c)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_double(socket, d)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_double(socket, e)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_double(socket, f)
|
|
|| guac_socket_write_string(socket, ";");
|
|
|
|
guac_socket_instruction_end(socket);
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
int guac_protocol_send_video(guac_socket* socket, const guac_stream* stream,
|
|
const guac_layer* layer, const char* mimetype, double duration) {
|
|
|
|
int ret_val;
|
|
|
|
guac_socket_instruction_begin(socket);
|
|
ret_val =
|
|
guac_socket_write_string(socket, "5.video,")
|
|
|| __guac_socket_write_length_int(socket, stream->index)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_int(socket, layer->index)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_string(socket, mimetype)
|
|
|| guac_socket_write_string(socket, ",")
|
|
|| __guac_socket_write_length_double(socket, duration)
|
|
|| guac_socket_write_string(socket, ";");
|
|
guac_socket_instruction_end(socket);
|
|
|
|
return ret_val;
|
|
|
|
}
|
|
|
|
/**
|
|
* Returns the value of a single base64 character.
|
|
*/
|
|
static int __guac_base64_value(char c) {
|
|
|
|
if (c >= 'A' && c <= 'Z')
|
|
return c - 'A';
|
|
|
|
if (c >= 'a' && c <= 'z')
|
|
return c - 'a' + 26;
|
|
|
|
if (c >= '0' && c <= '9')
|
|
return c - '0' + 52;
|
|
|
|
if (c == '+')
|
|
return 62;
|
|
|
|
if (c == '/')
|
|
return 63;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
int guac_protocol_decode_base64(char* base64) {
|
|
|
|
char* input = base64;
|
|
char* output = base64;
|
|
|
|
int length = 0;
|
|
int bits_read = 0;
|
|
int value = 0;
|
|
char current;
|
|
|
|
/* For all characters in string */
|
|
while ((current = *(input++)) != 0) {
|
|
|
|
/* If we've reached padding, then we're done */
|
|
if (current == '=')
|
|
break;
|
|
|
|
/* Otherwise, shift on the latest 6 bits */
|
|
value = (value << 6) | __guac_base64_value(current);
|
|
bits_read += 6;
|
|
|
|
/* If we have at least one byte, write out the latest whole byte */
|
|
if (bits_read >= 8) {
|
|
*(output++) = (value >> (bits_read % 8)) & 0xFF;
|
|
bits_read -= 8;
|
|
length++;
|
|
}
|
|
|
|
}
|
|
|
|
/* Return number of bytes written */
|
|
return length;
|
|
|
|
}
|
|
|