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Refine Remote Access Service query for WinVista and later

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Signed-off-by: Syrone Wong <wong.syrone@gmail.com>
This commit is contained in:
Syrone Wong
2016-10-16 16:43:11 +08:00
parent 1c1cc62235
commit 5721769c6d
1 changed files with 6 additions and 10 deletions
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shadowsocks-csharp/Util/SystemProxy/RAS.cs
+6 -10
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@@ -98,21 +98,19 @@ namespace Shadowsocks.Util.SystemProxy
/// </returns>
public static uint GetAllConns(ref string[] allConns)
{
int lpNames = 1;
int lpNames = 0;
int entryNameSize = 0;
int lpSize = 0;
uint retval = ERROR_SUCCESS;
RasEntryName[] names = null;
entryNameSize = Marshal.SizeOf(typeof(RasEntryName));
lpSize = lpNames * entryNameSize;
names = new RasEntryName[lpNames];
names[0].dwSize = entryNameSize;
// Windows Vista or later: To determine the required buffer size, call RasEnumEntries
// with lprasentryname set to NULL. The variable pointed to by lpcb should be set to zero.
// The function will return the required buffer size in lpcb and an error code of ERROR_BUFFER_TOO_SMALL.
retval = RasEnumEntries(null, null, null, ref lpSize, out lpNames);
retval = RAS.RasEnumEntries(null, null, names, ref lpSize, out lpNames);
//if we have more than one connection, we need to resize
if (retval == ERROR_BUFFER_TOO_SMALL)
{
names = new RasEntryName[lpNames];
@@ -121,8 +119,7 @@ namespace Shadowsocks.Util.SystemProxy
names[i].dwSize = entryNameSize;
}
retval = RAS.RasEnumEntries(null, null, names, ref lpSize, out lpNames);
retval = RasEnumEntries(null, null, names, ref lpSize, out lpNames);
}
if (retval == ERROR_SUCCESS)
@@ -145,7 +142,6 @@ namespace Shadowsocks.Util.SystemProxy
{
return 2;
}
}
}
}