http://www.feedblitz.comDescription: Adds a checkbox to the user registration dialog enabling users to register for both a WordPress site and create a FeedBlitz newsletter subscription from a single screen Version: 0.91Author: FeedBlitz, LLCAuthor URI: http://www.feedblitz.com/*/

/** * WP PLUGIN CONFIGURATION **/

$fbz_data = array( ‚feedblitz_feedid‘ => “, ‚feedblitz_text‘ => ‚Keep me up to date via email‘);

add_option(‚feedblitz_settings‘,$fbz_data,’FeedBlitz Newsletter Options‘);

$feedblitz_settings = get_option(‚feedblitz_settings‘);

function fbz_is_hash_valid($form_hash) { $ret = false; $saved_hash = fbz_retrieve_hash(); if ($form_hash === $saved_hash) { $ret = true; } return $ret;}

function fbz_generate_hash() { return md5(uniqid(rand(), TRUE));}

function fbz_store_hash($generated_hash) { return update_option(‚feedblitz_token‘,$generated_hash,’FeedBlitz Security Hash‘);}

function fbz_retrieve_hash() { $ret = get_option(‚feedblitz_token‘); return $ret;}

/* Heavily borrowed auth code from the FeedBurner FeedSmith plugin */function fbz_ol_is_authorized() { global $user_level; if (function_exists(„current_user_can“)) { return current_user_can(‚activate_plugins‘); } else { return $user_level > 5; }}

function fbz_ol_add_feedblitz_options_page() { if (function_exists(‚add_options_page‘)) { add_options_page(‚FeedBlitz‘, ‚FeedBlitz‘, 8, basename(__FILE__), ‚fbz_ol_feedblitz_options_subpanel‘); }}

function fbz_ol_feedblitz_options_subpanel() { global $fbz_ol_flash, $feedblitz_settings, $_POST, $wp_rewrite; if (fbz_ol_is_authorized()) { // Easiest test to see if we have been submitted to if(isset($_POST[‚feedblitz_feedid‘]) isset($_POST[‚feedblitz_text‘])) { // Now we check the hash, to make sure we are not getting CSRF if(fbz_is_hash_valid($_POST[‚token‘])) { if (isset($_POST[‚feedblitz_feedid‘])) { $feedblitz_settings[‚feedblitz_feedid‘] = $_POST[‚feedblitz_feedid‘]; update_option(‚feedblitz_settings‘,$feedblitz_settings); $fbz_ol_flash = „Your settings have been saved.“; } if (isset($_POST[‚feedblitz_text‘])) { $feedblitz_settings[‚feedblitz_text‘] = $_POST[‚feedblitz_text‘]; update_option(‚feedblitz_settings‘,$feedblitz_settings); $fbz_ol_flash = „Your settings have been saved.“; } } else { // Invalid form hash, possible CSRF attempt $fbz_ol_flash = „Security hash missing.“; } // endif fb_is_hash_valid } // endif isset(feedblitz_xxx) } else { $fbz_ol_flash = „You don’t have enough access rights.“; } if ($fbz_ol_flash != “) echo ‚

‚ . $fbz_ol_flash . ‚

‚; if (fbz_ol_is_authorized()) { $temp_hash = fbz_generate_hash(); fbz_store_hash($temp_hash); echo ‚

‚; echo ‚

FeedBlitz Newsletter Settings

‚; echo ‚

This plugin makes it easy keep visitors up to date with your FeedBlitz newsletter by integrating newsletter sign up with the end user registration process.

  1. To get started, create a FeedBlitz Newsletter for ‚ . get_bloginfo(’name‘) . ‚ if you have not done so already.
  2. Once you have created your Newsletter, enter its ID into the field below (the Newsletter ID can be found at http://www.blogger.com/%3Ca%20class=):http://www.feedblitz.com/f/f.fbz?Lists“>http://www.feedblitz.com/f/f.fbz?Lists):

    type=“text“ name=“feedblitz_feedid“ value=“‚ type=text name=feedblitz_text div>?; }
    }

    /** * WP HOOKS **/add_action(‚register_post‘,’plugin_post‘,10,3);add_action(‚register_form‘,’plugin_form‘);

    /** * END WP HOOKS **/

    /* Because I’m no PHP expert, copied from example at http://nadeausoftware.com/articles/2007/06/php_tip_how_get_web_page_using_curl */function fbz_get_web_page( $url ){ $options = array( CURLOPT_RETURNTRANSFER => true, // return web page CURLOPT_HEADER => false, // don’t return headers CURLOPT_FOLLOWLOCATION => true, // follow redirects CURLOPT_ENCODING => „“, // handle all encodings CURLOPT_USERAGENT => „spider“, // who am i CURLOPT_AUTOREFERER => true, // set referer on redirect CURLOPT_CONNECTTIMEOUT => 120, // timeout on connect CURLOPT_TIMEOUT => 120, // timeout on response CURLOPT_MAXREDIRS => 10, // stop after 10 redirects ); $ch = curl_init( $url ); curl_setopt_array( $ch, $options ); $content = curl_exec( $ch ); $err = curl_errno( $ch ); $errmsg = curl_error( $ch ); $header = curl_getinfo( $ch ); curl_close( $ch ); $header[‚errno‘] = $err; $header[‚errmsg‘] = $errmsg; $header[‚content‘] = $content; return $header;}

    /* Process the checkbox added and call FeedBlitz to start the dual opt in newsletter process */function plugin_post($login,$email,$errors){

    global $feedblitz_settings;

    /* ask feedblitz to send the registrant an activation email to confirm their subscirption (dual opt in). When the user clicks the link they will have to complete a captcha to prove they’re human */

    $feedid=$feedblitz_settings[‚feedblitz_feedid‘];

    if(trim($feedid)==“) { $errors->add(’newsletter_error‘,__(‚Newsletter ID not specified. Please log in to the admin user interface and update the FeedBlitz settings‘)); }

    if($_POST[‚fbz_checkbox‘]==__(‚on‘)) { $page=’http://www.feedblitz.com/f?newsubscriber=‘.$email.’&feedid=‘.$feedblitz_settings[‚feedblitz_feedid‘]; fbz_get_web_page($page);

    if ( $result[‚errno‘] != 0 $result[‚http_code‘] != 200 ) { /* commented out because not getting a newsletter isn’t fatal – let registration continue*/ /* $errors->add(’newsletter error‘,__’Unable to initiate newsletter subscription‘)); */ } }}

    /* Add the subscription checkbox to the screen */function plugin_form(){ global $feedblitz_settings; $feedid=$feedblitz_settings[‚feedblitz_feedid‘]; if(trim($feedid)!=“) { $html = ‚

    ‚; } else { $html=‘

    FeedBlitz plugin error. No feed id specified. Integrated newsletter registration is disabled.

    ‚; }echo $html;}

    add_action(‚admin_menu‘, ‚fbz_ol_add_feedblitz_options_page‘);

    ?>

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