mirror of
https://github.com/kasmtech/KasmVNC.git
synced 2024-12-11 17:30:44 +01:00
202 lines
5.2 KiB
C++
202 lines
5.2 KiB
C++
/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*/
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// -=- Clipboard.cxx
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#include <rfb_win32/Clipboard.h>
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#include <rfb_win32/WMShatter.h>
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#include <rfb/util.h>
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#include <rfb/LogWriter.h>
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using namespace rfb;
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using namespace rfb::win32;
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static LogWriter vlog("Clipboard");
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//
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// -=- CR/LF handlers
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//
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char*
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dos2unix(const char* text) {
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int len = strlen(text)+1;
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char* unix = new char[strlen(text)+1];
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int i, j=0;
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for (i=0; i<len; i++) {
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if (text[i] != '\x0d')
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unix[j++] = text[i];
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}
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return unix;
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}
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char*
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unix2dos(const char* text) {
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int len = strlen(text)+1;
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char* dos = new char[strlen(text)*2+1];
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int i, j=0;
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for (i=0; i<len; i++) {
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if (text[i] == '\x0a')
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dos[j++] = '\x0d';
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dos[j++] = text[i];
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}
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return dos;
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}
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//
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// -=- ISO-8859-1 (Latin 1) filter (in-place)
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//
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void
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removeNonISOLatin1Chars(char* text) {
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int len = strlen(text);
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int i=0, j=0;
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for (; i<len; i++) {
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if (((text[i] >= 1) && (text[i] <= 127)) ||
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((text[i] >= 160) && (text[i] <= 255)))
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text[j++] = text[i];
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}
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text[j] = 0;
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}
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//
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// -=- Clipboard object
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//
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Clipboard::Clipboard()
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: MsgWindow(_T("Clipboard")), notifier(0), next_window(0) {
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next_window = SetClipboardViewer(getHandle());
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vlog.debug("registered clipboard handler");
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}
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Clipboard::~Clipboard() {
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vlog.debug("removing %p from chain (next is %p)", getHandle(), next_window);
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ChangeClipboardChain(getHandle(), next_window);
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}
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LRESULT
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Clipboard::processMessage(UINT msg, WPARAM wParam, LPARAM lParam) {
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switch (msg) {
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case WM_CHANGECBCHAIN:
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vlog.debug("change clipboard chain (%I64x, %I64x)",
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(long long)wParam, (long long)lParam);
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if ((HWND) wParam == next_window)
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next_window = (HWND) lParam;
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else if (next_window != 0)
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SendMessage(next_window, msg, wParam, lParam);
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else
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vlog.error("bad clipboard chain change!");
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break;
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case WM_DRAWCLIPBOARD:
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{
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HWND owner = GetClipboardOwner();
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if (owner == getHandle()) {
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vlog.debug("local clipboard changed by me");
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} else {
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vlog.debug("local clipboard changed by %p", owner);
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// Open the clipboard
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if (OpenClipboard(getHandle())) {
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// Get the clipboard data
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HGLOBAL cliphandle = GetClipboardData(CF_TEXT);
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if (cliphandle) {
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char* clipdata = (char*) GlobalLock(cliphandle);
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// Notify clients
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if (notifier) {
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if (!clipdata) {
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notifier->notifyClipboardChanged(0, 0);
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} else {
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CharArray unix_text;
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unix_text.buf = dos2unix(clipdata);
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removeNonISOLatin1Chars(unix_text.buf);
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notifier->notifyClipboardChanged(unix_text.buf, strlen(unix_text.buf));
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}
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} else {
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vlog.debug("no clipboard notifier registered");
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}
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// Release the buffer and close the clipboard
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GlobalUnlock(cliphandle);
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}
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CloseClipboard();
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}
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}
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}
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if (next_window)
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SendMessage(next_window, msg, wParam, lParam);
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return 0;
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};
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return MsgWindow::processMessage(msg, wParam, lParam);
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};
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void
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Clipboard::setClipText(const char* text) {
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HANDLE clip_handle = 0;
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try {
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// - Firstly, we must open the clipboard
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if (!OpenClipboard(getHandle()))
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throw rdr::SystemException("unable to open Win32 clipboard", GetLastError());
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// - Pre-process the supplied clipboard text into DOS format
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CharArray dos_text;
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dos_text.buf = unix2dos(text);
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removeNonISOLatin1Chars(dos_text.buf);
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int dos_text_len = strlen(dos_text.buf);
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// - Allocate global memory for the data
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clip_handle = ::GlobalAlloc(GMEM_MOVEABLE, dos_text_len+1);
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char* data = (char*) GlobalLock(clip_handle);
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memcpy(data, dos_text.buf, dos_text_len+1);
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data[dos_text_len] = 0;
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GlobalUnlock(clip_handle);
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// - Next, we must clear out any existing data
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if (!EmptyClipboard())
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throw rdr::SystemException("unable to empty Win32 clipboard", GetLastError());
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// - Set the new clipboard data
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if (!SetClipboardData(CF_TEXT, clip_handle))
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throw rdr::SystemException("unable to set Win32 clipboard", GetLastError());
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clip_handle = 0;
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vlog.debug("set clipboard");
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} catch (rdr::Exception& e) {
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vlog.debug("%s", e.str());
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}
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// - Close the clipboard
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if (!CloseClipboard())
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vlog.debug("unable to close Win32 clipboard: %lu", GetLastError());
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else
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vlog.debug("closed clipboard");
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if (clip_handle) {
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vlog.debug("freeing clipboard handle");
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GlobalFree(clip_handle);
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}
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}
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