guacamole-spice-protocol/src/protocols/rdp/rdp_cliprdr.c

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/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is libguac-client-rdp.
*
* The Initial Developer of the Original Code is
* Michael Jumper.
* Portions created by the Initial Developer are Copyright (C) 2011
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include <freerdp/freerdp.h>
#include <freerdp/channels/channels.h>
#include <freerdp/utils/event.h>
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#ifdef HAVE_FREERDP_CLIENT_CLIPRDR_H
#include <freerdp/client/cliprdr.h>
#else
#include "compat/client-cliprdr.h"
#endif
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#ifdef ENABLE_WINPR
#include <winpr/wtypes.h>
#else
#include "compat/winpr-wtypes.h"
#endif
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#include <guacamole/client.h>
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#include <guacamole/protocol.h>
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#include "client.h"
#include "rdp_cliprdr.h"
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void guac_rdp_process_cliprdr_event(guac_client* client, wMessage* event) {
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switch (event->event_type) {
case RDP_EVENT_TYPE_CB_MONITOR_READY:
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guac_rdp_process_cb_monitor_ready(client, event);
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break;
case RDP_EVENT_TYPE_CB_FORMAT_LIST:
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guac_rdp_process_cb_format_list(client,
(RDP_CB_FORMAT_LIST_EVENT*) event);
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break;
case RDP_EVENT_TYPE_CB_DATA_REQUEST:
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guac_rdp_process_cb_data_request(client,
(RDP_CB_DATA_REQUEST_EVENT*) event);
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break;
case RDP_EVENT_TYPE_CB_DATA_RESPONSE:
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guac_rdp_process_cb_data_response(client,
(RDP_CB_DATA_RESPONSE_EVENT*) event);
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break;
default:
guac_client_log_info(client,
"Unknown cliprdr event type: 0x%x",
event->event_type);
}
}
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void guac_rdp_process_cb_monitor_ready(guac_client* client, wMessage* event) {
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rdpChannels* channels =
((rdp_guac_client_data*) client->data)->rdp_inst->context->channels;
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RDP_CB_FORMAT_LIST_EVENT* format_list =
(RDP_CB_FORMAT_LIST_EVENT*) freerdp_event_new(
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RDP_EVENT_CLASS_CLIPRDR,
RDP_EVENT_TYPE_CB_FORMAT_LIST,
NULL, NULL);
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/* Received notification of clipboard support. */
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/* Respond with supported format list */
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format_list->formats = (UINT32*) malloc(sizeof(UINT32));
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format_list->formats[0] = CB_FORMAT_TEXT;
format_list->num_formats = 1;
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freerdp_channels_send_event(channels, (wMessage*) format_list);
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}
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void guac_rdp_process_cb_format_list(guac_client* client,
RDP_CB_FORMAT_LIST_EVENT* event) {
rdpChannels* channels =
((rdp_guac_client_data*) client->data)->rdp_inst->context->channels;
/* Received notification of available data */
int i;
for (i=0; i<event->num_formats; i++) {
/* If plain text available, request it */
if (event->formats[i] == CB_FORMAT_TEXT) {
/* Create new data request */
RDP_CB_DATA_REQUEST_EVENT* data_request =
(RDP_CB_DATA_REQUEST_EVENT*) freerdp_event_new(
RDP_EVENT_CLASS_CLIPRDR,
RDP_EVENT_TYPE_CB_DATA_REQUEST,
NULL, NULL);
/* We want plain text */
data_request->format = CB_FORMAT_TEXT;
/* Send request */
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freerdp_channels_send_event(channels, (wMessage*) data_request);
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return;
}
}
/* Otherwise, no supported data available */
guac_client_log_info(client, "Ignoring unsupported clipboard data");
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}
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void guac_rdp_process_cb_data_request(guac_client* client,
RDP_CB_DATA_REQUEST_EVENT* event) {
rdpChannels* channels =
((rdp_guac_client_data*) client->data)->rdp_inst->context->channels;
/* If text requested, send clipboard text contents */
if (event->format == CB_FORMAT_TEXT) {
/* Get clipboard data */
const char* clipboard =
((rdp_guac_client_data*) client->data)->clipboard;
/* Create new data response */
RDP_CB_DATA_RESPONSE_EVENT* data_response =
(RDP_CB_DATA_RESPONSE_EVENT*) freerdp_event_new(
RDP_EVENT_CLASS_CLIPRDR,
RDP_EVENT_TYPE_CB_DATA_RESPONSE,
NULL, NULL);
/* Set data and length */
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if (clipboard != NULL) {
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data_response->data = (UINT8*) strdup(clipboard);
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data_response->size = strlen(clipboard) + 1;
}
else {
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data_response->data = (UINT8*) strdup("");
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data_response->size = 1;
}
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/* Send response */
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freerdp_channels_send_event(channels, (wMessage*) data_response);
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}
/* Otherwise ... failure */
else
guac_client_log_error(client,
"Server requested unsupported clipboard data type");
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}
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void guac_rdp_process_cb_data_response(guac_client* client,
RDP_CB_DATA_RESPONSE_EVENT* event) {
/* Received clipboard data */
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if (event->data[event->size - 1] == '\0') {
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/* Free existing data */
free(((rdp_guac_client_data*) client->data)->clipboard);
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/* Store clipboard data */
((rdp_guac_client_data*) client->data)->clipboard =
strdup((char*) event->data);
/* Send clipboard data */
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guac_protocol_send_clipboard(client->socket, (char*) event->data);
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}
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else
guac_client_log_error(client,
"Clipboard data missing null terminator");
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}