/* KeePass Password Safe - The Open-Source Password Manager Copyright (C) 2003-2020 Dominik Reichl This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ using System; using System.Collections.Generic; using System.Diagnostics; using System.Reflection; using System.Text; namespace ModernKeePassLib.Native { internal static class ClipboardU { internal const string XSel = "xsel"; private const string XSelV = "--version"; private const string XSelR = "--output --clipboard"; private const string XSelC = "--clear --clipboard"; private const string XSelW = "--input --clipboard"; private const string XSelND = " --nodetach"; private const AppRunFlags XSelWF = AppRunFlags.WaitForExit; private static bool? g_obXSel = null; public static string GetText() { // System.Windows.Forms.Clipboard doesn't work properly, // see Mono workaround 1530 // string str = GtkGetText(); // if(str != null) return str; return XSelGetText(); } public static bool SetText(string strText, bool bMayBlock) { string str = (strText ?? string.Empty); // System.Windows.Forms.Clipboard doesn't work properly, // see Mono workaround 1530 // if(GtkSetText(str)) return true; return XSelSetText(str, bMayBlock); } // ============================================================= // LibGTK // Even though GTK+ 3 appears to be loaded already, performing a // P/Invoke of LibGTK's gtk_init_check function terminates the // process (!) with the following error message: // "Gtk-ERROR **: GTK+ 2.x symbols detected. Using GTK+ 2.x and // GTK+ 3 in the same process is not supported". /* private static bool GtkInit() { try { // GTK requires GLib; // the following throws if and only if GLib is unavailable NativeMethods.g_free(IntPtr.Zero); if(NativeMethods.gtk_init_check(IntPtr.Zero, IntPtr.Zero) != NativeMethods.G_FALSE) return true; Debug.Assert(false); } catch(Exception) { Debug.Assert(false); } return false; } private static string GtkGetText() { IntPtr lpText = IntPtr.Zero; try { if(GtkInit()) { IntPtr h = NativeMethods.gtk_clipboard_get( NativeMethods.GDK_SELECTION_CLIPBOARD); if(h != IntPtr.Zero) { lpText = NativeMethods.gtk_clipboard_wait_for_text(h); if(lpText != IntPtr.Zero) return NativeMethods.Utf8ZToString(lpText); } } } catch(Exception) { Debug.Assert(false); } finally { try { NativeMethods.g_free(lpText); } catch(Exception) { Debug.Assert(false); } } return null; } private static bool GtkSetText(string str) { IntPtr lpText = IntPtr.Zero; try { if(GtkInit()) { lpText = NativeMethods.Utf8ZFromString(str ?? string.Empty); if(lpText == IntPtr.Zero) { Debug.Assert(false); return false; } bool b = false; for(int i = 0; i < 2; ++i) { IntPtr h = NativeMethods.gtk_clipboard_get((i == 0) ? NativeMethods.GDK_SELECTION_PRIMARY : NativeMethods.GDK_SELECTION_CLIPBOARD); if(h != IntPtr.Zero) { NativeMethods.gtk_clipboard_clear(h); NativeMethods.gtk_clipboard_set_text(h, lpText, -1); NativeMethods.gtk_clipboard_store(h); b = true; } } return b; } } catch(Exception) { Debug.Assert(false); } finally { NativeMethods.Utf8ZFree(lpText); } return false; } */ // ============================================================= // XSel private static bool XSelInit() { if(g_obXSel.HasValue) return g_obXSel.Value; string strTest = NativeLib.RunConsoleApp(XSel, XSelV); bool b = (strTest != null); g_obXSel = b; return b; } private static string XSelGetText() { if(!XSelInit()) return null; return NativeLib.RunConsoleApp(XSel, XSelR); } private static bool XSelSetText(string str, bool bMayBlock) { if(!XSelInit()) return false; string strOpt = (bMayBlock ? XSelND : string.Empty); // xsel with an empty input can hang, thus use --clear if(str.Length == 0) return (NativeLib.RunConsoleApp(XSel, XSelC + strOpt, null, XSelWF) != null); // Use --nodetach to prevent clipboard corruption; // https://sourceforge.net/p/keepass/bugs/1603/ return (NativeLib.RunConsoleApp(XSel, XSelW + strOpt, str, XSelWF) != null); } } }