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xf_cliprdr.c
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xf_cliprdr.c
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/**
* FreeRDP: A Remote Desktop Protocol Client
* X11 Clipboard Redirection
*
* Copyright 2010-2011 Vic Lee
*
* Licensed 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 <stdlib.h>
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <freerdp/utils/event.h>
#include <freerdp/utils/stream.h>
#include <freerdp/utils/unicode.h>
#include <freerdp/plugins/cliprdr.h>
#include "xf_cliprdr.h"
typedef struct clipboard_format_mapping clipboardFormatMapping;
struct clipboard_format_mapping
{
Atom target_format;
uint32 format_id;
};
typedef struct clipboard_context clipboardContext;
struct clipboard_context
{
rdpChannels* channels;
Window root_window;
Atom clipboard_atom;
Atom property_atom;
Atom identity_atom;
clipboardFormatMapping format_mappings[20];
int num_format_mappings;
/* server->client data */
uint32* formats;
int num_formats;
Atom targets[20];
int num_targets;
uint8* data;
uint32 data_format;
uint32 data_alt_format;
int data_length;
XEvent* respond;
/* client->server data */
Window owner;
int request_index;
boolean sync;
/* INCR mechanism */
Atom incr_atom;
boolean incr_starts;
uint8* incr_data;
int incr_data_length;
};
void xf_cliprdr_init(xfInfo* xfi, rdpChannels* chanman)
{
int n;
uint32 id;
clipboardContext* cb;
cb = xnew(clipboardContext);
xfi->clipboard_context = cb;
cb->channels = chanman;
cb->request_index = -1;
cb->root_window = DefaultRootWindow(xfi->display);
cb->clipboard_atom = XInternAtom(xfi->display, "CLIPBOARD", false);
if (cb->clipboard_atom == None)
{
DEBUG_WARN("unable to get CLIPBOARD atom");
}
id = 1;
cb->property_atom = XInternAtom(xfi->display, "_FREERDP_CLIPRDR", false);
cb->identity_atom = XInternAtom(xfi->display, "_FREERDP_CLIPRDR_ID", false);
XChangeProperty(xfi->display, xfi->drawable, cb->identity_atom,
XA_INTEGER, 32, PropModeReplace, (uint8*) &id, 1);
XSelectInput(xfi->display, cb->root_window, PropertyChangeMask);
n = 0;
cb->format_mappings[n].target_format = XInternAtom(xfi->display, "_FREERDP_RAW", false);
cb->format_mappings[n].format_id = CB_FORMAT_RAW;
n++;
cb->format_mappings[n].target_format = XInternAtom(xfi->display, "UTF8_STRING", false);
cb->format_mappings[n].format_id = CB_FORMAT_UNICODETEXT;
n++;
cb->format_mappings[n].target_format = XA_STRING;
cb->format_mappings[n].format_id = CB_FORMAT_TEXT;
n++;
cb->format_mappings[n].target_format = XInternAtom(xfi->display, "image/png", false);
cb->format_mappings[n].format_id = CB_FORMAT_PNG;
n++;
cb->format_mappings[n].target_format = XInternAtom(xfi->display, "image/jpeg", false);
cb->format_mappings[n].format_id = CB_FORMAT_JPEG;
n++;
cb->format_mappings[n].target_format = XInternAtom(xfi->display, "image/gif", false);
cb->format_mappings[n].format_id = CB_FORMAT_GIF;
n++;
cb->format_mappings[n].target_format = XInternAtom(xfi->display, "image/bmp", false);
cb->format_mappings[n].format_id = CB_FORMAT_DIB;
n++;
cb->format_mappings[n].target_format = XInternAtom(xfi->display, "text/html", false);
cb->format_mappings[n].format_id = CB_FORMAT_HTML;
cb->num_format_mappings = n + 1;
cb->targets[0] = XInternAtom(xfi->display, "TIMESTAMP", false);
cb->targets[1] = XInternAtom(xfi->display, "TARGETS", false);
cb->num_targets = 2;
cb->incr_atom = XInternAtom(xfi->display, "INCR", false);
}
void xf_cliprdr_uninit(xfInfo* xfi)
{
clipboardContext* cb = (clipboardContext*) xfi->clipboard_context;
if (cb)
{
xfree(cb->formats);
xfree(cb->data);
xfree(cb->respond);
xfree(cb->incr_data);
xfree(cb);
xfi->clipboard_context = NULL;
}
}
static uint8* lf2crlf(uint8* data, int* size)
{
uint8 c;
uint8* outbuf;
uint8* out;
uint8* in_end;
uint8* in;
int out_size;
out_size = (*size) * 2 + 1;
outbuf = (uint8*) xzalloc(out_size);
out = outbuf;
in = data;
in_end = data + (*size);
while (in < in_end)
{
c = *in++;
if (c == '\n')
{
*out++ = '\r';
*out++ = '\n';
}
else
{
*out++ = c;
}
}
*out++ = 0;
*size = out - outbuf;
return outbuf;
}
static void crlf2lf(uint8* data, int* size)
{
uint8 c;
uint8* out;
uint8* in;
uint8* in_end;
out = data;
in = data;
in_end = data + (*size);
while (in < in_end)
{
c = *in++;
if (c != '\r')
*out++ = c;
}
*size = out - data;
}
static void be2le(uint8* data, int size)
{
uint8 c;
while (size >= 2)
{
c = data[0];
data[0] = data[1];
data[1] = c;
data += 2;
size -= 2;
}
}
static boolean xf_cliprdr_is_self_owned(xfInfo* xfi)
{
Atom type;
uint32 id = 0;
uint32* pid = NULL;
int format, result = 0;
unsigned long length, bytes_left;
clipboardContext* cb = (clipboardContext*) xfi->clipboard_context;
cb->owner = XGetSelectionOwner(xfi->display, cb->clipboard_atom);
if (cb->owner != None)
{
result = XGetWindowProperty(xfi->display, cb->owner,
cb->identity_atom, 0, 4, 0, XA_INTEGER,
&type, &format, &length, &bytes_left, (uint8**) &pid);
}
if (pid)
{
id = *pid;
XFree(pid);
}
if ((cb->owner == None) || (cb->owner == xfi->drawable))
return false;
if (result != Success)
return false;
return (id ? true : false);
}
static int xf_cliprdr_select_format_by_id(clipboardContext* cb, uint32 format_id)
{
int i;
for (i = 0; i < cb->num_format_mappings; i++)
{
if (cb->format_mappings[i].format_id == format_id)
return i;
}
return -1;
}
static int xf_cliprdr_select_format_by_atom(clipboardContext* cb, Atom target)
{
int i;
int j;
if (cb->formats == NULL)
return -1;
for (i = 0; i < cb->num_format_mappings; i++)
{
if (cb->format_mappings[i].target_format != target)
continue;
if (cb->format_mappings[i].format_id == CB_FORMAT_RAW)
return i;
for (j = 0; j < cb->num_formats; j++)
{
if (cb->format_mappings[i].format_id == cb->formats[j])
return i;
}
}
return -1;
}
static void xf_cliprdr_send_raw_format_list(xfInfo* xfi)
{
Atom type;
uint8* format_data;
int format, result;
unsigned long length, bytes_left;
RDP_CB_FORMAT_LIST_EVENT* event;
clipboardContext* cb = (clipboardContext*) xfi->clipboard_context;
result = XGetWindowProperty(xfi->display, cb->root_window,
cb->property_atom, 0, 3600, 0, XA_STRING,
&type, &format, &length, &bytes_left, (uint8**) &format_data);
if (result != Success)
{
DEBUG_WARN("XGetWindowProperty failed");
return;
}
DEBUG_X11_CLIPRDR("format=%d len=%d bytes_left=%d", format, (int) length, (int) bytes_left);
event = (RDP_CB_FORMAT_LIST_EVENT*) freerdp_event_new(RDP_EVENT_CLASS_CLIPRDR,
RDP_EVENT_TYPE_CB_FORMAT_LIST, NULL, NULL);
event->raw_format_data = (uint8*) xmalloc(length);
memcpy(event->raw_format_data, format_data, length);
event->raw_format_data_size = length;
XFree(format_data);
freerdp_channels_send_event(cb->channels, (RDP_EVENT*) event);
}
static void xf_cliprdr_send_null_format_list(xfInfo* xfi)
{
RDP_CB_FORMAT_LIST_EVENT* event;
clipboardContext* cb = (clipboardContext*) xfi->clipboard_context;
event = (RDP_CB_FORMAT_LIST_EVENT*) freerdp_event_new(RDP_EVENT_CLASS_CLIPRDR,
RDP_EVENT_TYPE_CB_FORMAT_LIST, NULL, NULL);
event->num_formats = 0;
freerdp_channels_send_event(cb->channels, (RDP_EVENT*) event);
}
static void xf_cliprdr_send_supported_format_list(xfInfo* xfi)
{
int i;
RDP_CB_FORMAT_LIST_EVENT* event;
clipboardContext* cb = (clipboardContext*) xfi->clipboard_context;
event = (RDP_CB_FORMAT_LIST_EVENT*) freerdp_event_new(RDP_EVENT_CLASS_CLIPRDR,
RDP_EVENT_TYPE_CB_FORMAT_LIST, NULL, NULL);
event->formats = (uint32*) xmalloc(sizeof(uint32) * cb->num_format_mappings);
event->num_formats = cb->num_format_mappings;
for (i = 0; i < cb->num_format_mappings; i++)
event->formats[i] = cb->format_mappings[i].format_id;
freerdp_channels_send_event(cb->channels, (RDP_EVENT*) event);
}
static void xf_cliprdr_send_format_list(xfInfo* xfi)
{
clipboardContext* cb = (clipboardContext*) xfi->clipboard_context;
if (xf_cliprdr_is_self_owned(xfi))
{
xf_cliprdr_send_raw_format_list(xfi);
}
else if (cb->owner == None)
{
xf_cliprdr_send_null_format_list(xfi);
}
else if (cb->owner != xfi->drawable)
{
/* Request the owner for TARGETS, and wait for SelectionNotify event */
XConvertSelection(xfi->display, cb->clipboard_atom,
cb->targets[1], cb->property_atom, xfi->drawable, CurrentTime);
}
}
static void xf_cliprdr_send_data_request(xfInfo* xfi, uint32 format)
{
RDP_CB_DATA_REQUEST_EVENT* event;
clipboardContext* cb = (clipboardContext*) xfi->clipboard_context;
event = (RDP_CB_DATA_REQUEST_EVENT*) freerdp_event_new(RDP_EVENT_CLASS_CLIPRDR,
RDP_EVENT_TYPE_CB_DATA_REQUEST, NULL, NULL);
event->format = format;
freerdp_channels_send_event(cb->channels, (RDP_EVENT*) event);
}
static void xf_cliprdr_send_data_response(xfInfo* xfi, uint8* data, int size)
{
RDP_CB_DATA_RESPONSE_EVENT* event;
clipboardContext* cb = (clipboardContext*) xfi->clipboard_context;
event = (RDP_CB_DATA_RESPONSE_EVENT*) freerdp_event_new(RDP_EVENT_CLASS_CLIPRDR,
RDP_EVENT_TYPE_CB_DATA_RESPONSE, NULL, NULL);
event->data = data;
event->size = size;
freerdp_channels_send_event(cb->channels, (RDP_EVENT*) event);
}
static void xf_cliprdr_send_null_data_response(xfInfo* xfi)
{
xf_cliprdr_send_data_response(xfi, NULL, 0);
}
static void xf_cliprdr_process_cb_monitor_ready_event(xfInfo* xfi)
{
clipboardContext* cb = (clipboardContext*) xfi->clipboard_context;
xf_cliprdr_send_format_list(xfi);
cb->sync = true;
}
static void xf_cliprdr_process_cb_data_request_event(xfInfo* xfi, RDP_CB_DATA_REQUEST_EVENT* event)
{
int i;
clipboardContext* cb = (clipboardContext*) xfi->clipboard_context;
DEBUG_X11_CLIPRDR("format %d", event->format);
if (xf_cliprdr_is_self_owned(xfi))
{
/* CB_FORMAT_RAW */
i = 0;
XChangeProperty(xfi->display, xfi->drawable, cb->property_atom,
XA_INTEGER, 32, PropModeReplace, (uint8*) &event->format, 1);
}
else
{
i = xf_cliprdr_select_format_by_id(cb, event->format);
}
if (i < 0)
{
DEBUG_X11_CLIPRDR("unsupported format requested");
xf_cliprdr_send_null_data_response(xfi);
}
else
{
cb->request_index = i;
DEBUG_X11_CLIPRDR("target=%d", (int) cb->format_mappings[i].target_format);
XConvertSelection(xfi->display, cb->clipboard_atom,
cb->format_mappings[i].target_format, cb->property_atom,
xfi->drawable, CurrentTime);
XFlush(xfi->display);
/* After this point, we expect a SelectionNotify event from the clipboard owner. */
}
}
static void xf_cliprdr_get_requested_targets(xfInfo* xfi)
{
int num;
int i, j;
Atom atom;
int format;
uint8* data = NULL;
unsigned long length, bytes_left;
RDP_CB_FORMAT_LIST_EVENT* event;
clipboardContext* cb = (clipboardContext*) xfi->clipboard_context;
XGetWindowProperty(xfi->display, xfi->drawable, cb->property_atom,
0, 200, 0, XA_ATOM,
&atom, &format, &length, &bytes_left, &data);
DEBUG_X11_CLIPRDR("type=%d format=%d length=%d bytes_left=%d",
(int) atom, format, (int) length, (int) bytes_left);
if (length > 0)
{
event = (RDP_CB_FORMAT_LIST_EVENT*) freerdp_event_new(RDP_EVENT_CLASS_CLIPRDR,
RDP_EVENT_TYPE_CB_FORMAT_LIST, NULL, NULL);
event->formats = (uint32*) xmalloc(sizeof(uint32) * cb->num_format_mappings);
num = 0;
for (i = 0; i < length; i++)
{
atom = ((Atom*) data)[i];
DEBUG_X11("atom %d", (int) atom);
for (j = 0; j < cb->num_format_mappings; j++)
{
if (cb->format_mappings[j].target_format == atom)
{
DEBUG_X11("found format %d for atom %d",
cb->format_mappings[j].format_id, (int)atom);
event->formats[num++] = cb->format_mappings[j].format_id;
break;
}
}
}
event->num_formats = num;
XFree(data);
freerdp_channels_send_event(cb->channels, (RDP_EVENT*) event);
}
else
{
if (data)
XFree(data);
xf_cliprdr_send_null_format_list(xfi);
}
}
static uint8* xf_cliprdr_process_requested_raw(uint8* data, int* size)
{
uint8* outbuf;
outbuf = (uint8*) xmalloc(*size);
memcpy(outbuf, data, *size);
return outbuf;
}
static uint8* xf_cliprdr_process_requested_unicodetext(uint8* data, int* size)
{
uint8* inbuf;
uint8* outbuf;
size_t out_size;
UNICONV* uniconv;
inbuf = lf2crlf(data, size);
uniconv = freerdp_uniconv_new();
outbuf = (uint8*) freerdp_uniconv_out(uniconv, (char*) inbuf, &out_size);
freerdp_uniconv_free(uniconv);
xfree(inbuf);
*size = (int) out_size + 2;
return outbuf;
}
static uint8* xf_cliprdr_process_requested_text(uint8* data, int* size)
{
uint8* outbuf;
outbuf = lf2crlf(data, size);
return outbuf;
}
static uint8* xf_cliprdr_process_requested_dib(uint8* data, int* size)
{
uint8* outbuf;
/* length should be at least BMP header (14) + sizeof(BITMAPINFOHEADER) */
if (*size < 54)
{
DEBUG_X11_CLIPRDR("bmp length %d too short", *size);
return NULL;
}
*size -= 14;
outbuf = (uint8*) xzalloc(*size);
memcpy(outbuf, data + 14, *size);
return outbuf;
}
static uint8* xf_cliprdr_process_requested_html(uint8* data, int* size)
{
uint8* inbuf;
uint8* in;
uint8* outbuf;
char num[11];
UNICONV* uniconv;
inbuf = NULL;
if (*size > 2)
{
if ((uint8) data[0] == 0xFE && (uint8) data[1] == 0xFF)
{
be2le(data, *size);
}
if ((uint8) data[0] == 0xFF && (uint8) data[1] == 0xFE)
{
uniconv = freerdp_uniconv_new();
inbuf = (uint8*) freerdp_uniconv_in(uniconv, data + 2, *size - 2);
freerdp_uniconv_free(uniconv);
}
}
if (inbuf == NULL)
{
inbuf = xzalloc(*size + 1);
memcpy(inbuf, data, *size);
}
outbuf = (uint8*) xzalloc(*size + 200);
strcpy((char*) outbuf,
"Version:0.9\r\n"
"StartHTML:0000000000\r\n"
"EndHTML:0000000000\r\n"
"StartFragment:0000000000\r\n"
"EndFragment:0000000000\r\n");
in = (uint8*) strstr((char*) inbuf, "<body");
if (in == NULL)
{
in = (uint8*) strstr((char*) inbuf, "<BODY");
}
/* StartHTML */
snprintf(num, sizeof(num), "%010lu", (unsigned long) strlen((char*) outbuf));
memcpy(outbuf + 23, num, 10);
if (in == NULL)
{
strcat((char*) outbuf, "<HTML><BODY>");
}
strcat((char*) outbuf, "<!--StartFragment-->");
/* StartFragment */
snprintf(num, sizeof(num), "%010lu", (unsigned long) strlen((char*) outbuf));
memcpy(outbuf + 69, num, 10);
strcat((char*) outbuf, (char*) inbuf);
/* EndFragment */
snprintf(num, sizeof(num), "%010lu", (unsigned long) strlen((char*) outbuf));
memcpy(outbuf + 93, num, 10);
strcat((char*) outbuf, "<!--EndFragment-->");
if (in == NULL)
{
strcat((char*) outbuf, "</BODY></HTML>");
}
/* EndHTML */
snprintf(num, sizeof(num), "%010lu", (unsigned long) strlen((char*) outbuf));
memcpy(outbuf + 43, num, 10);
*size = strlen((char*) outbuf) + 1;
xfree(inbuf);
return outbuf;
}
static void xf_cliprdr_process_requested_data(xfInfo* xfi, boolean has_data, uint8* data, int size)
{
uint8* outbuf;
clipboardContext* cb = (clipboardContext*) xfi->clipboard_context;
if (cb->incr_starts && has_data)
return;
if (!has_data || data == NULL)
{
xf_cliprdr_send_null_data_response(xfi);
return;
}
switch (cb->format_mappings[cb->request_index].format_id)
{
case CB_FORMAT_RAW:
case CB_FORMAT_PNG:
case CB_FORMAT_JPEG:
case CB_FORMAT_GIF:
outbuf = xf_cliprdr_process_requested_raw(data, &size);
break;
case CB_FORMAT_UNICODETEXT:
outbuf = xf_cliprdr_process_requested_unicodetext(data, &size);
break;
case CB_FORMAT_TEXT:
outbuf = xf_cliprdr_process_requested_text(data, &size);
break;
case CB_FORMAT_DIB:
outbuf = xf_cliprdr_process_requested_dib(data, &size);
break;
case CB_FORMAT_HTML:
outbuf = xf_cliprdr_process_requested_html(data, &size);
break;
default:
outbuf = NULL;
break;
}
if (outbuf)
xf_cliprdr_send_data_response(xfi, outbuf, size);
else
xf_cliprdr_send_null_data_response(xfi);
/* Resend the format list, otherwise the server won't request again for the next paste */
xf_cliprdr_send_format_list(xfi);
}
static boolean xf_cliprdr_get_requested_data(xfInfo* xfi, Atom target)
{
Atom type;
int format;
uint8* data = NULL;
boolean has_data = false;
unsigned long length, bytes_left, dummy;
clipboardContext* cb = (clipboardContext*) xfi->clipboard_context;
if ((cb->request_index < 0) ||
(cb->format_mappings[cb->request_index].target_format != target))
{
DEBUG_X11_CLIPRDR("invalid target");
xf_cliprdr_send_null_data_response(xfi);
return false;
}
XGetWindowProperty(xfi->display, xfi->drawable,
cb->property_atom, 0, 0, 0, target,
&type, &format, &length, &bytes_left, &data);
DEBUG_X11_CLIPRDR("type=%d format=%d bytes=%d request_index=%d",
(int) type, format, (int) bytes_left, cb->request_index);
if (data)
{
XFree(data);
data = NULL;
}
if (bytes_left <= 0 && !cb->incr_starts)
{
DEBUG_X11("no data");
}
else if (type == cb->incr_atom)
{
DEBUG_X11("INCR started");
cb->incr_starts = true;
if (cb->incr_data)
{
xfree(cb->incr_data);
cb->incr_data = NULL;
}
cb->incr_data_length = 0;
/* Data will be followed in PropertyNotify event */
has_data = true;
}
else
{
if (bytes_left <= 0)
{
/* INCR finish */
data = cb->incr_data;
cb->incr_data = NULL;
bytes_left = cb->incr_data_length;
cb->incr_data_length = 0;
cb->incr_starts = 0;
DEBUG_X11("INCR finished");
has_data = true;
}
else if (XGetWindowProperty(xfi->display, xfi->drawable,
cb->property_atom, 0, bytes_left, 0, target,
&type, &format, &length, &dummy, &data) == Success)
{
if (cb->incr_starts)
{
bytes_left = length * format / 8;
DEBUG_X11("%d bytes", (int)bytes_left);
cb->incr_data = (uint8*) xrealloc(cb->incr_data, cb->incr_data_length + bytes_left);
memcpy(cb->incr_data + cb->incr_data_length, data, bytes_left);
cb->incr_data_length += bytes_left;
XFree(data);
data = NULL;
}
has_data = true;
}
else
{
DEBUG_X11_CLIPRDR("XGetWindowProperty failed");
}
}
XDeleteProperty(xfi->display, xfi->drawable, cb->property_atom);
xf_cliprdr_process_requested_data(xfi, has_data, data, (int) bytes_left);
if (data)
XFree(data);
return true;
}
static void xf_cliprdr_append_target(clipboardContext* cb, Atom target)
{
int i;
if (cb->num_targets >= ARRAY_SIZE(cb->targets))
return;
for (i = 0; i < cb->num_targets; i++)
{
if (cb->targets[i] == target)
return;
}
cb->targets[cb->num_targets++] = target;
}
static void xf_cliprdr_provide_targets(xfInfo* xfi, XEvent* respond)
{
clipboardContext* cb = (clipboardContext*) xfi->clipboard_context;
if (respond->xselection.property != None)
{
XChangeProperty(xfi->display,
respond->xselection.requestor,
respond->xselection.property,
XA_ATOM, 32, PropModeReplace,
(uint8*) cb->targets, cb->num_targets);
}
}
static void xf_cliprdr_provide_data(xfInfo* xfi, XEvent* respond)
{
clipboardContext* cb = (clipboardContext*) xfi->clipboard_context;
if (respond->xselection.property != None)
{
XChangeProperty(xfi->display,
respond->xselection.requestor,
respond->xselection.property,
respond->xselection.target, 8, PropModeReplace,
(uint8*) cb->data, cb->data_length);
}
}
static void xf_cliprdr_process_cb_format_list_event(xfInfo* xfi, RDP_CB_FORMAT_LIST_EVENT* event)
{
int i, j;
clipboardContext* cb = (clipboardContext*) xfi->clipboard_context;
if (cb->data)
{
xfree(cb->data);
cb->data = NULL;
}
if (cb->formats)
xfree(cb->formats);
cb->formats = event->formats;
cb->num_formats = event->num_formats;
event->formats = NULL;
event->num_formats = 0;
cb->num_targets = 2;
for (i = 0; i < cb->num_formats; i++)
{
for (j = 0; j < cb->num_format_mappings; j++)
{
if (cb->formats[i] == cb->format_mappings[j].format_id)
{
DEBUG_X11("announce format#%d : %d", i, cb->formats[i]);
xf_cliprdr_append_target(cb, cb->format_mappings[j].target_format);
}
}
}
XSetSelectionOwner(xfi->display, cb->clipboard_atom, xfi->drawable, CurrentTime);
if (event->raw_format_data)
{
XChangeProperty(xfi->display, cb->root_window, cb->property_atom,
XA_STRING, 8, PropModeReplace,
event->raw_format_data, event->raw_format_data_size);
}
XFlush(xfi->display);
}
static void xf_cliprdr_process_text(clipboardContext* cb, uint8* data, int size)
{
cb->data = (uint8*) xmalloc(size);
memcpy(cb->data, data, size);
cb->data_length = size;
crlf2lf(cb->data, &cb->data_length);
}
static void xf_cliprdr_process_unicodetext(clipboardContext* cb, uint8* data, int size)
{
UNICONV* uniconv;
uniconv = freerdp_uniconv_new();
cb->data = (uint8*) freerdp_uniconv_in(uniconv, data, size);
freerdp_uniconv_free(uniconv);
cb->data_length = strlen((char*) cb->data);
crlf2lf(cb->data, &cb->data_length);
}
static void xf_cliprdr_process_dib(clipboardContext* cb, uint8* data, int size)
{
STREAM* s;
uint16 bpp;
uint32 offset;
uint32 ncolors;
/* size should be at least sizeof(BITMAPINFOHEADER) */
if (size < 40)
{
DEBUG_X11_CLIPRDR("dib size %d too short", size);
return;
}
s = stream_new(0);
stream_attach(s, data, size);
stream_seek(s, 14);
stream_read_uint16(s, bpp);
stream_read_uint32(s, ncolors);
offset = 14 + 40 + (bpp <= 8 ? (ncolors == 0 ? (1 << bpp) : ncolors) * 4 : 0);
stream_detach(s);
stream_free(s);
DEBUG_X11_CLIPRDR("offset=%d bpp=%d ncolors=%d", offset, bpp, ncolors);
s = stream_new(14 + size);
stream_write_uint8(s, 'B');
stream_write_uint8(s, 'M');
stream_write_uint32(s, 14 + size);
stream_write_uint32(s, 0);
stream_write_uint32(s, offset);
stream_write(s, data, size);
cb->data = stream_get_head(s);
cb->data_length = stream_get_length(s);
stream_detach(s);
stream_free(s);
}
static void xf_cliprdr_process_html(clipboardContext* cb, uint8* data, int size)
{
char* start_str;
char* end_str;
int start;
int end;
start_str = strstr((char*) data, "StartHTML:");
end_str = strstr((char*) data, "EndHTML:");
if (start_str == NULL || end_str == NULL)
{
DEBUG_X11_CLIPRDR("invalid HTML clipboard format");
return;
}
start = atoi(start_str + 10);
end = atoi(end_str + 8);
if (start > size || end > size || start >= end)
{
DEBUG_X11_CLIPRDR("invalid HTML offset");
return;
}
cb->data = (uint8*) xmalloc(size - start + 1);
memcpy(cb->data, data + start, end - start);
cb->data_length = end - start;
crlf2lf(cb->data, &cb->data_length);
}
static void xf_cliprdr_process_cb_data_response_event(xfInfo* xfi, RDP_CB_DATA_RESPONSE_EVENT* event)
{
clipboardContext* cb = (clipboardContext*) xfi->clipboard_context;
DEBUG_X11_CLIPRDR("size=%d", event->size);
if (cb->respond == NULL)
{
DEBUG_X11_CLIPRDR("unexpected data");
return;
}
if (event->size == 0)
{
cb->respond->xselection.property = None;
}
else
{
if (cb->data)
{
xfree(cb->data);
cb->data = NULL;
}
switch (cb->data_format)
{
case CB_FORMAT_RAW:
case CB_FORMAT_PNG:
case CB_FORMAT_JPEG:
case CB_FORMAT_GIF:
cb->data = event->data;
cb->data_length = event->size;
event->data = NULL;
event->size = 0;
break;
case CB_FORMAT_TEXT:
xf_cliprdr_process_text(cb, event->data, event->size);
break;
case CB_FORMAT_UNICODETEXT:
xf_cliprdr_process_unicodetext(cb, event->data, event->size);
break;