#!/usr/bin/perl -w
# tmobile.pl 

use strict;
use LWP::UserAgent;
use HTTP::Request::Common qw(:DEFAULT $DYNAMIC_FILE_UPLOAD);
use HTTP::Cookies;
use Logger::Simple;

my ($username,$password) = @ARGV;

my $i = 0;
my $max_tries = 5;

my %levels = (ERROR=>1, WARN=>4, INFO=>6, DEBUG=>9);

my $loglevel = "DEBUG";

print "level set to: $loglevel --  $levels{$loglevel}\n";

my $log=Logger::Simple->new(LOG=>"/var/log/tmobile.log",CARP=>'1');

$log->set("###### Start tmobile.pl v.01 ######") if $levels{"$loglevel"} > $levels{'WARN'};

my $ua = LWP::UserAgent->new;
## Just a little lie
$ua->agent("Mozilla/4.0 (compatible; MSIE 5.5; MSN 2.5; Windows 98) ");
$ua->cookie_jar(HTTP::Cookies->new(file => "lwpcookies.txt",
                                    autosave => 1));
push @{ $ua->requests_redirectable }, 'POST';

$log->set("Attempting to Login") if $levels{"$loglevel"} > $levels{'WARN'};

##
## Try to get the post url automatically by trying Google.
## And, if getting Google works, I'm lucky so quit while I'm ahead.
##
## In SoCal all the TMobile HotSpots I'd visited used "service1.hotspot.t-mobile.com" but
## in South TX I found "service3...", so let's iterate thru a bit.
##
unless (can_get_google(\$ua)) {
  while (!login_to_tmobile(\$ua,$i) && $i < $max_tries) {
    $log->set("\tLogin retry # $i ... ") if $levels{"$loglevel"} > $levels{'WARN'};
    $i++;
    sleep 3; # Let's not bang too hard...
  }
}

exit 0;

# Create a request, send it through UA and get result
sub login_to_tmobile{
   my ($ua, $j, $post_url) = @_; 

   $j++;

   $post_url = "https://service$j.hotspot.t-mobile.com//user/home" unless $post_url;

   print "trying $j...";
   my $res = $$ua->request(POST $post_url,
          Content_Type => "application/x-www-form-urlencoded",
          Content      => [ username  => $username,
                            password => $password,
                          ]);
   #Check the outcome of the response
   if ($res->is_success) {
     $log->set("Login successful!\n $res->content"); # always log
     print "Got it!\n";
     return 1; 
   }
   $log->set("Post failed with $res->status_line"); # always log
   print " nope: ",$res->status_line,"\n";
   
   return 0;

}

# Try Google, if I get it, quit
# Otherwise, grab the post URl from what should be the
# T-Mobile login page and use it to login. Any failure sends
# me to the regular incremental login method

sub can_get_google{
   my ($ua) = @_; 

   print "trying to get lucky...";
   my $res = $$ua->request(GET "http://www.google.com");
   #Check the outcome of the response
   if ($res->is_success) {
     if ($res->content =~ m|http://images.google.com/|) {
	     $log->set("Already logged in and connected");
	     print "Already logged in!\n";
	     return 1;
     } else {
	     # name="postURL" value="https://service1.hotspot.t-mobile.com//user/home?t=dog2g830"
	     my ($post_url) = $res->content =~ /name="postUrl" value="([^"]+)"/;
	     return login_to_tmobile($ua,0,$post_url);
	     
     }
   }
   $log->set("Get Google failed with $res->status_line"); # always log
   print " Not lucky: ",$res->status_line,"\n";
   
   return 0;

}