From 7e14e7bd44deca48ce78f481185ef9bc8fefd9ca Mon Sep 17 00:00:00 2001
From: cash <cash@36083f99-b078-4883-b0ff-0f9b5a30f544>
Date: Tue, 4 Jan 2011 02:25:04 +0000
Subject: moving captcha and crontrigger plugins out of core

git-svn-id: http://code.elgg.org/elgg/trunk@7823 36083f99-b078-4883-b0ff-0f9b5a30f544
---
 mod/captcha/start.php | 136 --------------------------------------------------
 1 file changed, 136 deletions(-)
 delete mode 100644 mod/captcha/start.php

(limited to 'mod/captcha/start.php')

diff --git a/mod/captcha/start.php b/mod/captcha/start.php
deleted file mode 100644
index ec97d96b6..000000000
--- a/mod/captcha/start.php
+++ /dev/null
@@ -1,136 +0,0 @@
-<?php
-/**
- * Elgg captcha plugin
- *
- * @package captcha
- */
-
-function captcha_init() {
-	global $CONFIG;
-
-	// Register page handler for captcha functionality
-	register_page_handler('captcha','captcha_page_handler');
-
-	// Extend CSS
-	elgg_extend_view('css/screen','captcha/css');
-
-	// Number of background images
-	$CONFIG->captcha_num_bg = 5;
-
-	// Default length
-	$CONFIG->captcha_length = 5;
-
-	// Register a function that provides some default override actions
-	elgg_register_plugin_hook_handler('actionlist', 'captcha', 'captcha_actionlist_hook');
-
-	// Register actions to intercept
-	$actions = array();
-	$actions = elgg_trigger_plugin_hook('actionlist', 'captcha', NULL, $actions);
-
-	if (($actions) && (is_array($actions))) {
-		foreach ($actions as $action) {
-			elgg_register_plugin_hook_handler("action", $action, "captcha_verify_action_hook");
-		}
-	}
-}
-
-function captcha_page_handler($page) {
-	global $CONFIG;
-
-	if (isset($page[0])) {
-		set_input('captcha_token', $page[0]);
-	}
-
-	include($CONFIG->pluginspath . "captcha/captcha.php");
-}
-
-/**
- * Generate a token to act as a seed value for the captcha algorithm.
- */
-function captcha_generate_token() {
-	// Use action token plus some random for uniqueness
-	return md5(generate_action_token(time()) . rand());
-}
-
-/**
- * Generate a captcha based on the given seed value and length.
- *
- * @param string $seed_token
- * @return string
- */
-function captcha_generate_captcha($seed_token) {
-	global $CONFIG;
-
-	/*
-	 * We generate a token out of the random seed value + some session data,
-	 * this means that solving via pr0n site or indian cube farm becomes
-	 * significantly more tricky (we hope).
-	 * 
-	 * We also add the site secret, which is unavailable to the client and so should
-	 * make it very very hard to guess values before hand.
-	 * 
-	 */
-
-	return strtolower(substr(md5(generate_action_token(0) . $seed_token), 0, $CONFIG->captcha_length));
-}
-
-/**
- * Verify a captcha based on the input value entered by the user and the seed token passed.
- *
- * @param string $input_value
- * @param string $seed_token
- * @return bool
- */
-function captcha_verify_captcha($input_value, $seed_token) {
-	if (strcasecmp($input_value, captcha_generate_captcha($seed_token)) == 0) {
-		return TRUE;
-	}
-
-	return FALSE;
-}
-
-/**
- * Listen to the action plugin hook and check the captcha.
- *
- * @param string $hook
- * @param string $entity_type
- * @param mixed $returnvalue
- * @param array $params
- */
-function captcha_verify_action_hook($hook, $entity_type, $returnvalue, $params) {
-	$token = get_input('captcha_token');
-	$input = get_input('captcha_input');
-
-	if (($token) && (captcha_verify_captcha($input, $token))) {
-		return TRUE;
-	}
-
-	register_error(elgg_echo('captcha:captchafail'));
-
-	// forward to referrer or else action code sends to front page
-	forward(REFERER);
-
-	return FALSE;
-}
-
-/**
- * This function returns an array of actions the captcha will expect a captcha for.
- * Other plugins may add their own to this list thereby extending the use.
- *
- * @param string $hook
- * @param string $entity_type
- * @param mixed $returnvalue
- * @param array $params
- */
-function captcha_actionlist_hook($hook, $entity_type, $returnvalue, $params) {
-	if (!is_array($returnvalue)) {
-		$returnvalue = array();
-	}
-
-	$returnvalue[] = 'register';
-	$returnvalue[] = 'user/requestnewpassword';
-
-	return $returnvalue;
-}
-
-elgg_register_event_handler('init', 'system', 'captcha_init');
-- 
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