modules/drigg_external/drigg_external.module

<?php
// $Id$

/**
 * @defgroup drigg_external Drigg External : Provides an External Vote Button for Drigg.
 *
 * It uses Drigg's configuration to determine which vote button to display. It finds content
 * in Drigg's database based on the originating URL picked up either from the HTTP referer
 * or from the url HTTP attribute.
 * It depends on two templates that you can customize to your wishes : one for when a button
 * gets displayed (because the originating URL is already in Drigg), one for adding the content
 * to drigg (because the originating URL is not already in Drigg)
 */

/**
 * @file
 * Handles incoming requests to render a vote or add button, coming from the javascript
 *
 * @ingroup drigg_external
 */

/**
* Display help and module information
* @param path which path of the site we're displaying help
* @param arg array that holds the current path as would be returned from arg() function
* @return help text for the path
*/
function drigg_external_help($path, $arg) {
  $output = '';
  switch ($path) {
    case "admin/help#drigg_external":
    $output = '<p>'.  t("Offers an external vote button for a drigg site") .'</p>';
    break;
  }
  return $output;
} // function onthisdate_help

/**
 * Implementation of hook_menu().
 *
 */
function drigg_external_menu() {

  $items = array();

  $items['drigg_external/display_button'] = array(
    'title' => t('Drigg External - Show external vote button'),
    'page callback' => 'drigg_external_display_button',
    'access callback' => TRUE,
    'type' => MENU_CALLBACK,
  );

  return $items;
}

/**
 * Implementation of hook_theme().
 *
 */
function drigg_external_theme() {
  return array(
    //the external vote button itself is themed so that module users can add extra
    //stuff around the vote button itself (think branding...)

    //the template that will contain the vote button
      'drigg_external_button_vote' => array(
	      'arguments' => array('node' => NULL, 'widget_html' => NULL),
	      'template' => 'drigg-external-button-vote',
      ),

    //the template to display the "add this" message with a link to the correct URL
    'drigg_external_button_add' => array(
      'arguments' => array('link' => NULL),
      'template' => 'drigg-external-button-add',
    ),
  );
}


/**
* Valid permissions for this module
* @return array An array of valid permissions for the onthisdate module
*/
function drigg_external_perm() {
  return array('access drigg_external');
} // function onthisdate_perm()


function _drigg_external_get_url() {
	//This runs as a callback therefore it goes through the full Drupal bootstrap which looks like a waste of time
	//I tried doing it as a simple PHP script using drupal_bootstrap but I ended up having to include
	//helper & common scripts from core & drigg and, especially, load the variables from the database so
	//I deemed it not worth the trouble

	// get the REFERER URL in case the user did not provide the permalink in javascript
	// this is used for wordpress-type sites where javascript cannot be included : we will just
	// serve up an image that links to here or something to that amount
  if (isset($_SERVER['HTTP_REFERER'])) {
    $url = check_url($_SERVER['HTTP_REFERER']);
  }

	// get the URL provided in javascript if it's there. It overrides the referer
  if (isset($_GET['url'])) {
    //$get_url  = iconv("UTF-8", "UTF-8//IGNORE", $_GET['url'] );
    $get_url  = $_GET['url'];
    if ($get_url) {
      $url = check_url($get_url);
    }
  }

  // this should never happen
  if (!isset($url)) {
    return FALSE;
  }

  return $url;
}

function _drigg_external_get_node($url) {
  if (!module_exists("drigg")) {
    die("Drigg isn't installed!");
  }

  //get the drigg node from the url
  $node = drigg_url_exists($url, 0, TRUE);

  return $node;
}

function drigg_external_display_button() {
  //separate functions for upcoming Wordpress-compatible EVB
  $url = _drigg_external_get_url();
  if (!$url) {
    //make this pretty one day
    die("No url to display button for. Did you set the javacript 'url_site' variable ?");
  }

  $node = _drigg_external_get_node($url);

  if ($node) {
    //drigg allows you to use any kind of widget
    //the PHP located in the variable below tells us which function to call (and the parameters)
    $widget_display_php = variable_get('drigg_voting_forms_voted_on','return extra_voting_forms_show_form($node, "n", 3);');

    //currently, eval doesn't work so use the default drigg vote button than 90% of people use
    $widget_code=eval($widget_display_php);
    if ($widget_code == FALSE) {
      die("Widget error cannot eval following PHP : $widget_display_php");
    }

    drupal_add_css();
    drupal_add_js();

    print theme('drigg_external_button_vote', $node, $widget_code);
  }
  else {
    //create the link to drigg node creation
    //l function is broken because it doubly encodes, see http://drupal.org/node/178615
    $link="<a target='_blank' href='/node/add/drigg/?url=".rawurlencode($url)."'>".t("Add it !")."</a>";

    print theme('drigg_external_button_add', $link);
  }

  //that's all folks : prevent drupal from display a page
  module_invoke_all('exit');
  exit;
}
1	<?php
2	// $Id$
3
4	/**
5	* @defgroup drigg_external Drigg External : Provides an External Vote Button for Drigg.
6	*
7	* It uses Drigg's configuration to determine which vote button to display. It finds content
8	* in Drigg's database based on the originating URL picked up either from the HTTP referer
9	* or from the url HTTP attribute.
10	* It depends on two templates that you can customize to your wishes : one for when a button
11	* gets displayed (because the originating URL is already in Drigg), one for adding the content
12	* to drigg (because the originating URL is not already in Drigg)
13	*/
14
15	/**
16	* @file
17	* Handles incoming requests to render a vote or add button, coming from the javascript
18	*
19	* @ingroup drigg_external
20	*/
21
22	/**
23	* Display help and module information
24	* @param path which path of the site we're displaying help
25	* @param arg array that holds the current path as would be returned from arg() function
26	* @return help text for the path
27	*/
28	function drigg_external_help($path, $arg) {
29	$output = '';
30	switch ($path) {
31	case "admin/help#drigg_external":
32	$output = '<p>'. t("Offers an external vote button for a drigg site") .'</p>';
33	break;
34	}
35	return $output;
36	} // function onthisdate_help
37
38	/**
39	* Implementation of hook_menu().
40	*
41	*/
42	function drigg_external_menu() {
43
44	$items = array();
45
46	$items['drigg_external/display_button'] = array(
47	'title' => t('Drigg External - Show external vote button'),
48	'page callback' => 'drigg_external_display_button',
49	'access callback' => TRUE,
50	'type' => MENU_CALLBACK,
51	);
52
53	return $items;
54	}
55
56	/**
57	* Implementation of hook_theme().
58	*
59	*/
60	function drigg_external_theme() {
61	return array(
62	//the external vote button itself is themed so that module users can add extra
63	//stuff around the vote button itself (think branding...)
64
65	//the template that will contain the vote button
66	'drigg_external_button_vote' => array(
67	'arguments' => array('node' => NULL, 'widget_html' => NULL),
68	'template' => 'drigg-external-button-vote',
69	),
70
71	//the template to display the "add this" message with a link to the correct URL
72	'drigg_external_button_add' => array(
73	'arguments' => array('link' => NULL),
74	'template' => 'drigg-external-button-add',
75	),
76	);
77	}
78
79
80	/**
81	* Valid permissions for this module
82	* @return array An array of valid permissions for the onthisdate module
83	*/
84	function drigg_external_perm() {
85	return array('access drigg_external');
86	} // function onthisdate_perm()
87
88
89	function _drigg_external_get_url() {
90	//This runs as a callback therefore it goes through the full Drupal bootstrap which looks like a waste of time
91	//I tried doing it as a simple PHP script using drupal_bootstrap but I ended up having to include
92	//helper & common scripts from core & drigg and, especially, load the variables from the database so
93	//I deemed it not worth the trouble
94
95	// get the REFERER URL in case the user did not provide the permalink in javascript
96	// this is used for wordpress-type sites where javascript cannot be included : we will just
97	// serve up an image that links to here or something to that amount
98	if (isset($_SERVER['HTTP_REFERER'])) {
99	$url = check_url($_SERVER['HTTP_REFERER']);
100	}
101
102	// get the URL provided in javascript if it's there. It overrides the referer
103	if (isset($_GET['url'])) {
104	//$get_url = iconv("UTF-8", "UTF-8//IGNORE", $_GET['url'] );
105	$get_url = $_GET['url'];
106	if ($get_url) {
107	$url = check_url($get_url);
108	}
109	}
110
111	// this should never happen
112	if (!isset($url)) {
113	return FALSE;
114	}
115
116	return $url;
117	}
118
119	function _drigg_external_get_node($url) {
120	if (!module_exists("drigg")) {
121	die("Drigg isn't installed!");
122	}
123
124	//get the drigg node from the url
125	$node = drigg_url_exists($url, 0, TRUE);
126
127	return $node;
128	}
129
130	function drigg_external_display_button() {
131	//separate functions for upcoming Wordpress-compatible EVB
132	$url = _drigg_external_get_url();
133	if (!$url) {
134	//make this pretty one day
135	die("No url to display button for. Did you set the javacript 'url_site' variable ?");
136	}
137
138	$node = _drigg_external_get_node($url);
139
140	if ($node) {
141	//drigg allows you to use any kind of widget
142	//the PHP located in the variable below tells us which function to call (and the parameters)
143	$widget_display_php = variable_get('drigg_voting_forms_voted_on','return extra_voting_forms_show_form($node, "n", 3);');
144
145	//currently, eval doesn't work so use the default drigg vote button than 90% of people use
146	$widget_code=eval($widget_display_php);
147	if ($widget_code == FALSE) {
148	die("Widget error cannot eval following PHP : $widget_display_php");
149	}
150
151	drupal_add_css();
152	drupal_add_js();
153
154	print theme('drigg_external_button_vote', $node, $widget_code);
155	}
156	else {
157	//create the link to drigg node creation
158	//l function is broken because it doubly encodes, see http://drupal.org/node/178615
159	$link="<a target='_blank' href='/node/add/drigg/?url=".rawurlencode($url)."'>".t("Add it !")."</a>";
160
161	print theme('drigg_external_button_add', $link);
162	}
163
164	//that's all folks : prevent drupal from display a page
165	module_invoke_all('exit');
166	exit;
167	}