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guacamole-spice-protocol/src/libguac/protocol.c

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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
#include "config.h"
#include "guacamole/error.h"
#include "guacamole/layer.h"
#include "guacamole/object.h"
#include "guacamole/protocol.h"
#include "guacamole/protocol-types.h"
#include "guacamole/socket.h"
#include "guacamole/stream.h"
#include "guacamole/unicode.h"
#include "palette.h"
#include <cairo/cairo.h>
#include <inttypes.h>
#include <setjmp.h>
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
/**
* A structure mapping the enum value of a Guacamole protocol version to the
* string representation of the version.
*/
typedef struct guac_protocol_version_mapping {
/**
* The enum value of the protocol version.
*/
guac_protocol_version version;
/**
* The string value representing the protocol version.
*/
char* version_string;
} guac_protocol_version_mapping;
/**
* The map of known protocol versions to the corresponding string value.
*/
guac_protocol_version_mapping guac_protocol_version_table[] = {
{ GUAC_PROTOCOL_VERSION_1_0_0, "VERSION_1_0_0" },
{ GUAC_PROTOCOL_VERSION_1_1_0, "VERSION_1_1_0" },
{ GUAC_PROTOCOL_VERSION_1_3_0, "VERSION_1_3_0" },
{ GUAC_PROTOCOL_VERSION_UNKNOWN, NULL }
};
/* Output formatting functions */
ssize_t __guac_socket_write_length_string(guac_socket* socket, const char* str) {
return
guac_socket_write_int(socket, guac_utf8_strlen(str))
|| guac_socket_write_string(socket, ".")
|| guac_socket_write_string(socket, str);
}
ssize_t __guac_socket_write_length_int(guac_socket* socket, int64_t i) {
char buffer[128];
snprintf(buffer, sizeof(buffer), "%"PRIi64, i);
return __guac_socket_write_length_string(socket, buffer);
}
ssize_t __guac_socket_write_length_double(guac_socket* socket, double d) {
char buffer[128];
snprintf(buffer, sizeof(buffer), "%.16g", d);
return __guac_socket_write_length_string(socket, buffer);
}
/**
* Loop through the provided NULL-terminated array, writing the values in the
* array to the given socket. Values are written as a series of Guacamole
* protocol elements, including the leading comma and the value length in
* addition to the value itself. Returns zero on success, non-zero on error.
*
* @param socket
* The socket to which the data should be written.
*
* @param array
* The NULL-terminated array of values to write.
*
* @return
* Zero on success, non-zero on error.
*/
static int guac_socket_write_array(guac_socket* socket, const char** array) {
/* Loop through array, writing provided values to the socket. */
for (int i=0; array[i] != NULL; i++) {
if (guac_socket_write_string(socket, ","))
return -1;
if (__guac_socket_write_length_string(socket, array[i]))
return -1;
}
return 0;
}
/* Protocol functions */
int guac_protocol_send_ack(guac_socket* socket, guac_stream* stream,
const char* error, guac_protocol_status status) {
int ret_val;
guac_socket_instruction_begin(socket);
ret_val =
guac_socket_write_string(socket, "3.ack,")
|| __guac_socket_write_length_int(socket, stream->index)
|| guac_socket_write_string(socket, ",")
|| __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;
}
static int __guac_protocol_send_args(guac_socket* socket, const char** args) {
if (guac_socket_write_string(socket, "4.args")) return -1;
/* Send protocol version ahead of other args. */
if (guac_socket_write_string(socket, ",")
|| __guac_socket_write_length_string(socket, GUACAMOLE_PROTOCOL_VERSION))
return -1;
if (guac_socket_write_array(socket, args))
return -1;
return guac_socket_write_string(socket, ";");
}
int guac_protocol_send_args(guac_socket* socket, const char** args) {
int ret_val;
guac_socket_instruction_begin(socket);
ret_val = __guac_protocol_send_args(socket, args);
guac_socket_instruction_end(socket);
return ret_val;
}
int guac_protocol_send_argv(guac_socket* socket, 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.argv,")
|| __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_arc(guac_socket* socket, const guac_layer* layer,
int x, int y, int radius, double startAngle, double endAngle,
int negative) {
int ret_val;
guac_socket_instruction_begin(socket);
ret_val =
guac_socket_write_string(socket, "3.arc,")
|| __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, radius)
|| guac_socket_write_string(socket, ",")
|| __guac_socket_write_length_double(socket, startAngle)
|| guac_socket_write_string(socket, ",")
|| __guac_socket_write_length_double(socket, endAngle)
|| guac_socket_write_string(socket, ",")
|| guac_socket_write_string(socket, negative ? "1.1" : "1.0")
|| guac_socket_write_string(socket, ";");
guac_socket_instruction_end(socket);
return ret_val;
}
int guac_protocol_send_audio(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, "5.audio,")
|| __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_blob(guac_socket* socket, const guac_stream* stream,
const void* data, int count) {
int base64_length = (count + 2) / 3 * 4;
int ret_val;
guac_socket_instruction_begin(socket);
ret_val =
guac_socket_write_string(socket, "4.blob,")
|| __guac_socket_write_length_int(socket, stream->index)
|| guac_socket_write_string(socket, ",")
|| guac_socket_write_int(socket, base64_length)
|| guac_socket_write_string(socket, ".")
|| guac_socket_write_base64(socket, data, count)
|| guac_socket_flush_base64(socket)
|| guac_socket_write_string(socket, ";");
guac_socket_instruction_end(socket);
return ret_val;
}
int guac_protocol_send_blobs(guac_socket* socket, const guac_stream* stream,
const void* data, int count) {
int ret_val = 0;
/* Send blob instructions while data remains and instructions are being
* sent successfully */
while (count > 0 && ret_val == 0) {
/* Limit blob size to maximum allowed */
int blob_size = count;
if (blob_size > GUAC_PROTOCOL_BLOB_MAX_LENGTH)
blob_size = GUAC_PROTOCOL_BLOB_MAX_LENGTH;
/* Send next blob of data */
ret_val = guac_protocol_send_blob(socket, stream, data, blob_size);
/* Advance to next blob */
data = (const char*) data + blob_size;
count -= blob_size;
}
return ret_val;
}
int guac_protocol_send_body(guac_socket* socket, const guac_object* object,
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.body,")
|| __guac_socket_write_length_int(socket, object->index)
|| guac_socket_write_string(socket, ",")
|| __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_cfill(guac_socket* socket,
guac_composite_mode mode, const guac_layer* layer,
int r, int g, int b, int a) {
int ret_val;
guac_socket_instruction_begin(socket);
ret_val =
guac_socket_write_string(socket, "5.cfill,")
|| __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, 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_close(guac_socket* socket, const guac_layer* layer) {
int ret_val;
guac_socket_instruction_begin(socket);
ret_val =
guac_socket_write_string(socket, "5.close,")
|| __guac_socket_write_length_int(socket, layer->index)
|| guac_socket_write_string(socket, ";");
guac_socket_instruction_end(socket);
return ret_val;
}
static int __guac_protocol_send_connect(guac_socket* socket, const char** args) {
if (guac_socket_write_string(socket, "7.connect"))
return -1;
if (guac_socket_write_array(socket, args))
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_filesystem(guac_socket* socket,
const guac_object* object, const char* name) {
int ret_val;
guac_socket_instruction_begin(socket);
ret_val =
guac_socket_write_string(socket, "10.filesystem,")
|| __guac_socket_write_length_int(socket, object->index)
|| 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_key(guac_socket* socket, int keysym, int pressed,
guac_timestamp timestamp) {
int ret_val;
guac_socket_instruction_begin(socket);
ret_val =
guac_socket_write_string(socket, "3.key,")
|| __guac_socket_write_length_int(socket, keysym)
|| guac_socket_write_string(socket, pressed ? ",1.1," : ",1.0,")
|| __guac_socket_write_length_int(socket, timestamp)
|| 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_mouse(guac_socket* socket, int x, int y,
int button_mask, guac_timestamp timestamp) {
int ret_val;
guac_socket_instruction_begin(socket);
ret_val =
guac_socket_write_string(socket, "5.mouse,")
|| __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, button_mask)
|| guac_socket_write_string(socket, ",")
|| __guac_socket_write_length_int(socket, timestamp)
|| 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_img(guac_socket* socket, const guac_stream* stream,
guac_composite_mode mode, const guac_layer* layer,
const char* mimetype, int x, int y) {
int ret_val;
guac_socket_instruction_begin(socket);
ret_val =
guac_socket_write_string(socket, "3.img,")
|| __guac_socket_write_length_int(socket, stream->index)
|| guac_socket_write_string(socket, ",")
|| __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_string(socket, mimetype)
|| 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_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_required(guac_socket* socket, const char** required) {
int ret_val;
guac_socket_instruction_begin(socket);
ret_val = guac_socket_write_string(socket, "8.required")
|| guac_socket_write_array(socket, required)
|| guac_socket_write_string(socket, ";")
|| guac_socket_flush(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_undefine(guac_socket* socket,
const guac_object* object) {
int ret_val;
guac_socket_instruction_begin(socket);
ret_val =
guac_socket_write_string(socket, "8.undefine,")
|| __guac_socket_write_length_int(socket, object->index)
|| 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) {
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_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;
}
guac_protocol_version guac_protocol_string_to_version(char* version_string) {
guac_protocol_version_mapping* current = guac_protocol_version_table;
while (current->version != GUAC_PROTOCOL_VERSION_UNKNOWN) {
if (strcmp(current->version_string, version_string) == 0)
return current->version;
current++;
}
return GUAC_PROTOCOL_VERSION_UNKNOWN;
}
const char* guac_protocol_version_to_string(guac_protocol_version version) {
guac_protocol_version_mapping* current = guac_protocol_version_table;
while (current->version) {
if (current->version == version) {
return (const char*) current->version_string;
}
}
return NULL;
}
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