guacamole-spice-protocol/src/protocols/vnc/clipboard.c

145 lines
4.6 KiB
C

/*
* 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 "client.h"
#include "clipboard.h"
#include "common/clipboard.h"
#include "common/iconv.h"
#include "user.h"
#include "vnc.h"
#include <guacamole/client.h>
#include <guacamole/stream.h>
#include <guacamole/user.h>
#include <rfb/rfbclient.h>
#include <rfb/rfbproto.h>
int guac_vnc_set_clipboard_encoding(guac_client* client,
const char* name) {
guac_vnc_client* vnc_client = (guac_vnc_client*) client->data;
/* Use ISO8859-1 if explicitly selected or NULL */
if (name == NULL || strcmp(name, "ISO8859-1") == 0) {
vnc_client->clipboard_reader = GUAC_READ_ISO8859_1;
vnc_client->clipboard_writer = GUAC_WRITE_ISO8859_1;
return 0;
}
/* UTF-8 */
if (strcmp(name, "UTF-8") == 0) {
vnc_client->clipboard_reader = GUAC_READ_UTF8;
vnc_client->clipboard_writer = GUAC_WRITE_UTF8;
return 1;
}
/* UTF-16 */
if (strcmp(name, "UTF-16") == 0) {
vnc_client->clipboard_reader = GUAC_READ_UTF16;
vnc_client->clipboard_writer = GUAC_WRITE_UTF16;
return 1;
}
/* CP1252 */
if (strcmp(name, "CP1252") == 0) {
vnc_client->clipboard_reader = GUAC_READ_CP1252;
vnc_client->clipboard_writer = GUAC_WRITE_CP1252;
return 1;
}
/* If encoding unrecognized, warn and default to ISO8859-1 */
guac_client_log(client, GUAC_LOG_WARNING,
"Encoding '%s' is invalid. Defaulting to ISO8859-1.", name);
vnc_client->clipboard_reader = GUAC_READ_ISO8859_1;
vnc_client->clipboard_writer = GUAC_WRITE_ISO8859_1;
return 0;
}
int guac_vnc_clipboard_handler(guac_user* user, guac_stream* stream,
char* mimetype) {
/* Clear clipboard and prepare for new data */
guac_vnc_client* vnc_client = (guac_vnc_client*) user->client->data;
guac_common_clipboard_reset(vnc_client->clipboard, mimetype);
/* Set handlers for clipboard stream */
stream->blob_handler = guac_vnc_clipboard_blob_handler;
stream->end_handler = guac_vnc_clipboard_end_handler;
return 0;
}
int guac_vnc_clipboard_blob_handler(guac_user* user, guac_stream* stream,
void* data, int length) {
/* Append new data */
guac_vnc_client* vnc_client = (guac_vnc_client*) user->client->data;
guac_common_clipboard_append(vnc_client->clipboard, (char*) data, length);
return 0;
}
int guac_vnc_clipboard_end_handler(guac_user* user, guac_stream* stream) {
guac_vnc_client* vnc_client = (guac_vnc_client*) user->client->data;
rfbClient* rfb_client = vnc_client->rfb_client;
char output_data[GUAC_VNC_CLIPBOARD_MAX_LENGTH];
const char* input = vnc_client->clipboard->buffer;
char* output = output_data;
guac_iconv_write* writer = vnc_client->clipboard_writer;
/* Convert clipboard contents */
guac_iconv(GUAC_READ_UTF8, &input, vnc_client->clipboard->length,
writer, &output, sizeof(output_data));
/* Send via VNC only if finished connecting */
if (rfb_client != NULL)
SendClientCutText(rfb_client, output_data, output - output_data);
return 0;
}
void guac_vnc_cut_text(rfbClient* client, const char* text, int textlen) {
guac_client* gc = rfbClientGetClientData(client, GUAC_VNC_CLIENT_KEY);
guac_vnc_client* vnc_client = (guac_vnc_client*) gc->data;
char received_data[GUAC_VNC_CLIPBOARD_MAX_LENGTH];
const char* input = text;
char* output = received_data;
guac_iconv_read* reader = vnc_client->clipboard_reader;
/* Convert clipboard contents */
guac_iconv(reader, &input, textlen,
GUAC_WRITE_UTF8, &output, sizeof(received_data));
/* Send converted data */
guac_common_clipboard_reset(vnc_client->clipboard, "text/plain");
guac_common_clipboard_append(vnc_client->clipboard, received_data, output - received_data);
guac_common_clipboard_send(vnc_client->clipboard, gc);
}