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/*******************************************************************************
* libproxy - A library for proxy configuration
* Copyright (C) 2006 Nathaniel McCallum <nathaniel@natemccallum.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
******************************************************************************/
namespace libproxy {
using System;
using System.Runtime.InteropServices;
public class ProxyFactory {
private HandleRef self;
[DllImport ("proxy")]
private static extern
IntPtr px_proxy_factory_new();
[DllImport ("proxy")]
private static extern
IntPtr px_proxy_factory_get_proxies(HandleRef self, string url);
[DllImport ("proxy")]
private static extern
void px_proxy_factory_free(HandleRef self);
public ProxyFactory()
{
this.self = new HandleRef(this, px_proxy_factory_new());
}
public string[] GetProxies(string url)
{
int count = 0;
// Get the results
// TODO: If we call both this function and px_proxy_factory_free()
// this crashes, figure out why...
IntPtr array = px_proxy_factory_get_proxies(this.self, url);
// Count the number of returned strings
while (Marshal.ReadIntPtr(array, count * IntPtr.Size) != IntPtr.Zero) count++;
// Allocate a correctly sized array
string[] proxies = new string[count];
// Fill the response array
for (int i=0 ; i < count ; i++)
{
IntPtr p = Marshal.ReadIntPtr(array, i * IntPtr.Size);
proxies[i] = Marshal.PtrToStringAnsi(p);
Marshal.FreeCoTaskMem(p); // Free the string
}
// Free the array itself
Marshal.FreeCoTaskMem(array);
return proxies;
}
~ProxyFactory()
{
// TODO: See note above...
px_proxy_factory_free(this.self);
}
}
}
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