Al fin entendi!!! jejej si si, medio duro para entender las cosas.
Squid.conf:
https_port 443 cert=[path_certificado] key=[path_key] protocol=http vhost defaultsite=[algun_default_site]
cache_peer [sitio_de_intranet] parent 80 0 originserver
url_rewrite_program [path]/url_rewriter.php
acl [nombre] urlgroup [nombre]
cache_peer_access [sitio_de_intranet] allow [nombre]
url_rewriter.php:
#!/usr/bin/php -q
< ?
define('STDIN', fopen("php://stdin", "r"));
while($line = fgets(STDIN, 256)){
$input = preg_split("/\s+/", $line);
$url = parse_url($input[0]);
$newpath = preg_replace("/\/\w+(.*)/", "$1", $url[path]);
#print "$url[host]\n";
#print "$url[scheme]\n";
#print "$url[path]\n";
#print "$newpath\n";
if(preg_match("/\/[nombre].*/", $url[path]) > 0){
print "![nombre]!http://[url_completa_del_sitio_de_intranet]$newpath\n";
}
}
fclose(STDIN);
exit(0);
?>
Agradesco la ayuda de Diego Woitasen