Source code of the freebiesms wordpress plugin

<?php

Plugin Name: FreebieSMS

Plugin URI: http://freebiesms.co.uk/

Description: Allow your visitors to send free SMS to any mobile number.

function freebiesms(){

global $freebiesms;

$freebiesms->display();

}

class freebiesms {

function display(){

// Each widget can store its own options. We keep strings here.

$options = get_option('widget_freebiesms');

.TableContents { background-color: #F2F2F2; height: 24px; font-family:Verdana, Geneva, Arial, Helvetica, sans-serif; font-size: 15; padding-left: 5px; }

.FormElement { border: silver 1px solid; background-color: #F1F7F7; font-family:Verdana, Geneva, Arial, Helvetica, sans-serif; font-size: 15; }

</style>

<tr>

Send an SMS Text Message

</a>

</td>

</tr>

<tr>

To Mobile

</td>

<td>

</td>

</tr>

<tr>

To Name

</td>

<td>

</td>

</tr>

<tr>

From Mobile

</td>

<td>

</td>

</tr>

<tr>

From Name

</td>

<td>

</td>

</tr>

<tr>

Message

<br>

</td>

</tr>

<tr>

</td>

</td>

</tr>

</table>

</form>

function limitLength(textarea,maxlimit)

{

if (textarea.value.length > maxlimit)

textarea.value = textarea.value.substring(0, maxlimit);

}

function validate()

{

var Prefix = "0044"

var ToMobile = window.document.SMSForm.ToMobile.value;

var FromMobile = window.document.SMSForm.FromMobile.value;

var ToName = window.document.SMSForm.ToName.value;

var FromName = window.document.SMSForm.FromName.value;

var Message = window.document.SMSForm.Message.value;

// Ensure To-Mobile number is international format & from correct country

if (ToMobile.indexOf(Prefix)!=0)

{

alert(ToMobile + " is not a valid Phone number.");

return false;

}

// Ensure From-Mobile number is international format

if (FromMobile.indexOf("00")!=0)

{

alert(FromMobile + " is not a valid Phone number.");

return false;

}

// Ensure names are filled in

if (ToName.length<3 || FromName.length<3)

{

alert("Your name must be between 3 and 11 letters long.");

return false;

}

// To and from cannot be the same.

if (FromMobile == ToMobile)

{

alert("You cannot send a message to and from the same person");

return false;

}

if (Message.length==0)

{

alert("Your message is blank. Please type a message in the box provided");

return false;

}

return true;

}

</script>

<?php

}

// Admin panel configuration

function settings_control() {

// Get our options and see if we're handling a form submission.

$options = get_option('widget_freebiesms');

if ( $_POST['freebiesms-submit']=='options' )

{

// Remember to sanitize and format use input appropriately.

$options['affiliateid'] = strip_tags(stripslashes($_POST['freebiesms-affiliateid']));

update_option('widget_freebiesms', $options);

}

// Be sure you format your options to be valid HTML attributes.

$affiliateid = htmlspecialchars($options['affiliateid'], ENT_QUOTES);

// Here is our little form segment. Notice that we don't need a

// complete form. This will be embedded into the existing form.

<h2>FreebieSMS Options</h2>

<table>

<tr><td><label for="freebiesms-affiliateid">AffiliateID:</label></td><td><input style="width: 200px;" id="freebiesms-affiliateid" name="freebiesms-affiliateid" type="text" value="<?php echo $affiliateid;?>" title="Enter your FreebieSMS affiliate ID."/></td></tr>

</table>

</form></div>

</div>

<?php

}

// This is the function that outputs freebiesms writing-box

function widget($args) {

// $args is an array of strings that help widgets to conform to

// the active theme: before_widget, before_title, after_widget,

// and after_title are the array keys. Default tags: li and h2.

extract($args);

$options = get_option('widget_freebiesms');

echo $before_widget . $before_title . $options['title'] . $after_title;

$this->display();

echo $after_widget;

}

function widget_control() {

// Get our options and see if we're handling a form submission.

$options = get_option('widget_freebiesms');

if ( $_POST['freebiesms-submit']=='options' )

{

// Remember to sanitize and format use input appropriately.

$options['title'] = strip_tags(stripslashes($_POST['freebiesms-title']));

update_option('widget_freebiesms', $options);

}

<table>

<tr><td><label for="freebiesms-title">Title:</label></td><td><input style="width: 200px;" id="freebiesms-title" name="freebiesms-title" type="text" value="<?php echo $options['title'];?>" /></td></tr>

</table>

<?php

}

function add_pages(){

add_options_page("FreebieSMS Options", "FreebieSMS", 10, "freebie-sms", array(&$this,'settings_control'));

}

// Put functions into one big function we'll call at the plugins_loaded

// action. This ensures that all required plugin functions are defined.

function init() {

$options = get_option('widget_freebiesms');

if ( !is_array($options) )

{

$options = array(

'affiliateid'=>'8015',

);

update_option('widget_freebiesms', $options);

}

if (function_exists('wp_register_sidebar_widget') )

{ //Do Widget-specific code

wp_register_sidebar_widget('freebiesms', 'FreebieSMS', 'freebiesms_widget');

wp_register_widget_control('freebiesms', 'FreebieSMS', 'freebiesms_widget_control', 300, 100);

}

add_action('admin_menu', array(&$this,'add_pages'));

}

$freebiesms = new freebiesms();

SIDEBAR MODULES COMPATIBILITY KLUDGE

These functions are external to the class above to allow compatibility with SBM

which does not allow calls to be passed to a class member.

These functions are dummy passthru's for the real functions above

function freebiesms_widget($args){

global $freebiesms;

$freebiesms->widget($args);

}

function freebiesms_widget_control(){

global $freebiesms;

$freebiesms->widget_control();

}

END DUMMY KLUDGE

// Run our code later in case this loads prior to any required plugins.

add_action('plugins_loaded', array(&$freebiesms,'init'));