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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
******************************************************************************/
#include <cstring>
#include "../module_types.hpp"
using namespace com::googlecode::libproxy;
/* The domain blacklist */
/* TODO: Make this not suck */
/* Is there a list of 'public' domains somewhere? */
static const char *blacklist[] = {
"co.uk", "com.au",
/* Terminator */
NULL
};
static string
_get_fqdn()
{
#define BUFLEN 512
char hostname[BUFLEN];
// Zero out the buffer
memset(hostname, 0, BUFLEN);
// Get the hostname
if (gethostname(hostname, BUFLEN)) return "";
/* Lookup the hostname */
/* TODO: Make this whole process not suck */
struct hostent *host_info = gethostbyname(hostname);
if (host_info)
strncpy(hostname, host_info->h_name, BUFLEN-1);
try { return string(hostname).substr(string(hostname).find(".")).substr(1); }
catch (out_of_range& e) { return ""; }
}
class dnsdevolution_wpad_module : public wpad_module {
public:
PX_MODULE_ID(NULL);
dnsdevolution_wpad_module() {
this->rewind();
}
bool found() {
return this->lpac != NULL;
}
pac* next() {
// If we have rewound start the new count
if (this->last == "")
this->last = _get_fqdn();
// Get the 'next' segment
if (this->last.find(".") == string::npos) return NULL;
this->last = this->last.substr(this->last.find(".")+1);
// Don't do TLD's
if (this->last.find(".") == string::npos) return NULL;
// Process blacklist
for (int i=0 ; blacklist[i] ; i++)
if (this->last == blacklist[i])
return NULL;
// Try to load
try { this->lpac = new pac(url(string("http://wpad.") + this->last + "/wpad.dat")); }
catch (parse_error& e) { }
catch (io_error& e) { }
return this->lpac;
}
void rewind() {
this->last = "";
}
private:
string last;
pac* lpac;
};
PX_MODULE_LOAD(wpad, dnsdevolution, true);
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