# This code fragment demonstrates how to send an SMS text message to
# an AT&T wireless subscriber who has an SMS-enabled cell phone. This
# can be used to send an SMS message to yourself when certain events
# happen on your server/website.
#
# At present, AT&T message center presents a browser with a cookie
# when the SMS message form is retrieved, and won't send an SMS 
# message unless the cookie is presented along with the POST to
# their CGI. Below we use HTTP::Cookies to set up a cookie jar to
# hold the cookie, and present it along with the post.
#
# There are a number of SMS packages on CPAN, and they're worth
# exploring. At the time I put this together, I didn't find anything
# there that coped with the cookie requirement.
#
# Please use this responsibly.
#
# 28 June 2002 Dave W. Smith <dws@postcognitive.com>

use HTTP::Request::Common qw(GET POST);
use HTTP::Cookies;
use LWP::UserAgent;

my $messageCenter = "http://www.mobile.att.net/messagecenter";
my $pagersend = "$messageCenter/pagersend.cgi";

# ---- change these as appropriate ----
my $phoneNumber = die "phone number here";
my $msgFrom = "me";                # name or phone number
my $msgSubject = "Test";        # optional subject
my $msgBody = "Hello World!";    # from + subject + body <= 140 chars
# -------------------------------------

# Set up a UserAgent with a cookie jar
my $ua = new LWP::UserAgent();
my $cookies = new HTTP::Cookies();
$ua->cookie_jar($cookies);

# Get the pager request form. This gets the cookie we'll need
# later to send the message.
my $req = GET "$messageCenter/";
my $response = $ua->request($req);
if ( ! $response->is_success() ) {
    die "Couldn't get form from message center";
}

# Send the SMS message
$req = POST $pagersend, [
            pin => $phoneNumber,
            from => $msgFrom,
            subject => $msgSubject,
            message => $msgBody
        ];
$response = $ua->request($req);
if ( ! $response->is_success() ) {
    die "Can't submit page request";
}

my $content = $response->as_string();
if ( $content !~ m/your message has been submitted/i ) {
    die "Server didn't like page request\n";
}

print "Sent\n";
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