Imported Upstream version 2.0.27upstream/2.0.27

1 files changed, 306 insertions, 0 deletions

diff --git a/agent/w32main.c b/agent/w32main.c
new file mode 100644
index 0000000..9fc3abb
--- /dev/null
+++ b/agent/w32main.c
@@ -0,0 +1,306 @@
+/* w32main.c - W32 main entry pint and taskbar support for the GnuPG Agent
+ * Copyright (C) 2007 Free Software Foundation, Inc.
+ * Copyright 1996, 1998 Alexandre Julliard
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+#ifndef HAVE_W32_SYSTEM
+#error This module is only useful for the W32 version of gpg-agent
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include <windows.h>
+
+#include "util.h"
+#include "w32main.h"
+
+/* The instance handle has received by WinMain.  */
+static HINSTANCE glob_hinst;
+static HWND glob_hwnd;
+
+
+/* Build an argv array from the command in CMDLINE.  RESERVED is the
+   number of args to reserve before the first one.  This code is based
+   on Alexandre Julliard's LGPLed wine-0.9.34/dlls/kernel32/process.c
+   and modified to fit into our framework.  The function returns NULL
+   on error; on success an arry with the argiments is returned.  This
+   array has been allocaqted using a plain malloc (and not the usual
+   xtrymalloc). */
+static char **
+build_argv (char *cmdline_arg, int reserved)
+{
+  int argc;
+  char **argv;
+  char *cmdline, *s, *arg, *d;
+  int in_quotes, bs_count;
+
+  cmdline = malloc (strlen (cmdline_arg) + 1);
+  if (!cmdline)
+    return NULL;
+  strcpy (cmdline, cmdline_arg);
+
+  /* First determine the required size of the array.  */
+  argc = reserved + 1;
+  bs_count = 0;
+  in_quotes = 0;
+  s = cmdline;
+  for (;;)
+    {
+      if ( !*s || ((*s==' ' || *s=='\t') && !in_quotes)) /* A space.  */
+        {
+          argc++;
+          /* Skip the remaining spaces.  */
+          while (*s==' ' || *s=='\t') 
+            s++;
+          if (!*s)
+            break;
+          bs_count = 0;
+        } 
+      else if (*s=='\\')
+        {
+          bs_count++;
+          s++;
+        }
+      else if ( (*s == '\"') && !(bs_count & 1))
+        {
+          /* Unescaped '\"' */
+          in_quotes = !in_quotes;
+          bs_count=0;
+          s++;
+        } 
+      else /* A regular character. */
+        {
+          bs_count = 0;
+          s++;
+        }
+    }
+
+  argv = xtrymalloc (argc * sizeof *argv);
+  if (!argv)
+    {
+      xfree (cmdline);
+      return NULL;
+    }
+
+  /* Now actually parse the command line.  */
+  argc = reserved;
+  bs_count = 0;
+  in_quotes=0;
+  arg = d = s = cmdline;
+  while (*s)
+    {
+      if ((*s==' ' || *s=='\t') && !in_quotes)
+        {
+          /* Close the argument and copy it. */
+          *d = 0;
+          argv[argc++] = arg;
+
+          /* Skip the remaining spaces. */
+          do 
+            s++;
+          while (*s==' ' || *s=='\t');
+
+          /* Start with a new argument */
+          arg = d = s;
+          bs_count = 0;
+        } 
+      else if (*s=='\\') 
+        {
+          *d++ = *s++;
+          bs_count++;
+        } 
+      else if (*s=='\"') 
+        {
+          if ( !(bs_count & 1) )
+            {
+              /* Preceded by an even number of backslashes, this is
+                 half that number of backslashes, plus a '\"' which we
+                 discard.  */
+              d -= bs_count/2;
+              s++;
+              in_quotes = !in_quotes;
+            }
+          else 
+            {
+              /* Preceded by an odd number of backslashes, this is
+                 half that number of backslashes followed by a '\"'.  */
+              d = d - bs_count/2 - 1;
+              *d++ ='\"';
+              s++;
+            }
+          bs_count=0;
+        } 
+      else /* A regular character. */
+        {
+          *d++ = *s++;
+          bs_count = 0;
+        }
+    }
+
+  if (*arg)
+    {
+      *d = 0;
+      argv[argc++] = arg;
+    }
+  argv[argc] = NULL;
+
+  return argv;
+}
+
+
+
+/* Our window message processing function.  */
+static LRESULT CALLBACK 
+wndw_proc (HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
+{		
+
+  switch (msg)
+    {
+    case WM_USER:
+      fprintf (stderr,"%s: received WM_%s\n", __func__, "USER" );
+      break;
+
+    }
+
+  return DefWindowProc (hwnd, msg, wparam, lparam);
+}
+
+
+/* This function is called to do some fast event polling and
+   processing.  */
+void
+w32_poll_events (void)
+{
+/*   MSG msg; */
+
+/*   fprintf (stderr,"%s: enter\n", __func__); */
+/*   while (PeekMessage (&msg, glob_hwnd,  0, 0, PM_REMOVE))  */
+/*     {  */
+/*       DispatchMessage (&msg); */
+/*     } */
+/*   fprintf (stderr,"%s: leave\n", __func__); */
+}
+
+
+
+static void *
+handle_taskbar (void *ctx)
+{
+  WNDCLASS wndwclass = {0, wndw_proc, 0, 0, glob_hinst,
+                        0, 0, 0, 0, "gpg-agent"};
+  NOTIFYICONDATA nid;
+  HWND hwnd;
+  MSG msg;
+  int rc;
+
+  if (!RegisterClass (&wndwclass))
+    {
+      log_error ("error registering window class\n");
+      ExitThread (0);
+    }
+  hwnd = CreateWindow ("gpg-agent", "gpg-agent",
+                       0, 0, 0, 0, 0,
+                       NULL, NULL, glob_hinst, NULL);
+  if (!hwnd)
+    {
+      log_error ("error creating main window\n");
+      ExitThread (0);
+    }
+  glob_hwnd = hwnd;
+  UpdateWindow (hwnd);
+
+  memset (&nid, 0, sizeof nid);
+  nid.cbSize = sizeof (nid);
+  nid.uFlags = NIF_MESSAGE | NIF_ICON | NIF_TIP;
+  nid.uCallbackMessage = WM_USER;
+  nid.hWnd = glob_hwnd;
+  nid.uID = 1;
+  nid.hIcon = LoadIcon (glob_hinst, MAKEINTRESOURCE (1));
+  mem2str (nid.szTip, "GnuPG Agent version "PACKAGE_VERSION,
+           sizeof nid.szTip);
+  Shell_NotifyIcon (NIM_ADD, &nid);
+  DestroyIcon (nid.hIcon);
+
+  fprintf (stderr, "%s: enter\n", __func__);
+  while ( (rc=GetMessage (&msg, hwnd,  0, 0)) ) 
+    { 
+      if (rc == -1)
+        {
+          log_error ("getMessage failed: %s\n", w32_strerror (-1));
+          break;
+        }
+      TranslateMessage (&msg);
+      DispatchMessage (&msg);
+    }
+  fprintf (stderr,"%s: leave\n", __func__);
+  ExitThread (0);
+  return NULL;
+}
+
+
+
+/* This function initializes the Window system and sets up the taskbar
+   icon.  We only have very limited GUI support just to give the
+   taskbar icon a little bit of life.  This fucntion is called once to
+   fire up the icon.  */
+int
+w32_setup_taskbar (void)
+{
+  SECURITY_ATTRIBUTES sa;
+  DWORD tid;
+  HANDLE th;
+
+  memset (&sa, 0, sizeof sa);
+  sa.nLength = sizeof sa;
+  sa.bInheritHandle = FALSE;
+
+  fprintf (stderr,"creating thread for the taskbar_event_loop...\n");
+  th = CreateThread (&sa, 128*1024,
+                     (LPTHREAD_START_ROUTINE)handle_taskbar,
+                     NULL, 0, &tid);
+  fprintf (stderr,"created thread %p tid=%d\n", th, (int)tid);
+
+  CloseHandle (th);
+
+  return 0;
+}
+
+
+/* The main entry point for the Windows version.  We save away all GUI
+   related stuff, parse the command line and finally call the real
+   main.  */
+int WINAPI
+WinMain (HINSTANCE hinst, HINSTANCE hprev, LPSTR cmdline, int showcmd)
+{
+  char **argv;
+  int argc;
+
+  /* We use the GetCommandLine function because that also includes the
+     program name in contrast to the CMDLINE arg. */
+  argv = build_argv (GetCommandLineA (), 0);
+  if (!argv)
+    return 2; /* Can't do much about a malloc failure.  */
+  for (argc=0; argv[argc]; argc++)
+    ;
+
+  glob_hinst = hinst;
+
+  return w32_main (argc, argv);
+}