Squid's URL modification/rewrite - url

Question

I need to modify some special URLs which are passed over Squid, for example: i access the address www.google.com.vn through out my Squid. I want to modify Squid source code at some where to replace www.google.com.vn into www.google.com. So every requests to www.google.com.vn will become requests to www.google.com
Please help ASPS

Answer 1

First of all, squid rewriting and redirecting depends on a third party helper.
The best part is that you can write this helper in any programming language.
use the url_rewrite_program directive in squid.conf
and add to it the path to your custom made script.
Your script will receive content with the following:
URL client_ip "/" fqdn user method [ kvpairs]\n
Obviously you need the URL part,so figure a way to get the url part and return the website you want the client to be directed to.
Hope that help in any way...
Example rewrite programm (C++)
#include <iostream>
#include <string>
using namespace std;
// a replace function :)
bool replace(std::string& str, const std::string& from, const std::string& to) {
size_t start_pos = str.find(from);
if(start_pos == std::string::npos)
return false;
str.replace(start_pos, from.length(), to);
return true;
}
int main()
{
while(1)
{
string input;
cin >> input;
replace(input, "www.google.vn", "www.google.com");
cout << input << endl;
}
}