1<?php
2
3/*
4 * Template Lite plugin
5 * -------------------------------------------------------------
6 * Type:     function
7 * Name:     mailto
8 * Version:  1.2
9 * Date:     May 21, 2002
10 * Author:	 Monte Ohrt <monte@ispi.net>
11 * Credits:  Jason Sweat (added cc, bcc and subject functionality)
12 * Purpose:  automate mailto address link creation, and optionally
13 *           encode them.
14 * Input:    address = e-mail address
15 *           text = (optional) text to display, default is address
16 *           encode = (optional) can be one of:
17 *                 none : no encoding (default)
18 *                 javascript : encode with javascript
19 *                 hex : encode with hexidecimal (no javascript)
20 *           cc = (optional) address(es) to carbon copy
21 *           bcc = (optional) address(es) to blind carbon copy
22 *           subject = (optional) e-mail subject
23 *           newsgroups = (optional) newsgroup(s) to post to
24 *           followupto = (optional) address(es) to follow up to
25 *           extra = (optional) extra tags for the href link
26 *
27 * Examples: {mailto address="me@domain.com"}
28 *           {mailto address="me@domain.com" encode="javascript"}
29 *           {mailto address="me@domain.com" encode="hex"}
30 *           {mailto address="me@domain.com" subject="Hello to you!"}
31 *           {mailto address="me@domain.com" cc="you@domain.com,they@domain.com"}
32 *           {mailto address="me@domain.com" extra='class="mailto"'}
33 * Taken from the original Smarty
34 * http://smarty.php.net
35 * -------------------------------------------------------------
36 */
37function tpl_function_mailto($params, &$template_object)
38{
39    extract($params);
40
41    if (empty($address))
42	{
43        $template_object->trigger_error("mailto: missing 'address' parameter");
44        return;
45    }
46
47    if (empty($text))
48	{
49		$text = $address;
50    }
51
52    if (empty($extra))
53	{
54		$extra = "";
55    }
56
57	// netscape and mozilla do not decode %40 (@) in BCC field (bug?)
58	// so, don't encode it.
59
60	$mail_parms = array();
61	if (!empty($cc))
62	{
63		$mail_parms[] = 'cc='.str_replace('%40','@',rawurlencode($cc));
64	}
65
66	if (!empty($bcc))
67	{
68		$mail_parms[] = 'bcc='.str_replace('%40','@',rawurlencode($bcc));
69	}
70
71	if (!empty($subject))
72	{
73		$mail_parms[] = 'subject='.rawurlencode($subject);
74	}
75
76	if (!empty($newsgroups))
77	{
78		$mail_parms[] = 'newsgroups='.rawurlencode($newsgroups);
79	}
80
81	if (!empty($followupto))
82	{
83		$mail_parms[] = 'followupto='.str_replace('%40','@',rawurlencode($followupto));
84	}
85
86	$mail_parm_vals = "";
87	for ($i=0; $i<count($mail_parms); $i++)
88	{
89		$mail_parm_vals .= (0==$i) ? '?' : '&';
90		$mail_parm_vals .= $mail_parms[$i];
91	}
92	$address .= $mail_parm_vals;
93
94	if (empty($encode))
95	{
96		$encode = 'none';
97    }
98	elseif (!in_array($encode,array('javascript','hex','none')) )
99	{
100        $template_object->trigger_error("mailto: 'encode' parameter must be none, javascript or hex");
101        return;
102	}
103
104	if ($encode == 'javascript' )
105	{
106		$string = 'document.write(\'<a href="mailto:'.$address.'" '.$extra.'>'.$text.'</a>\');';
107		for ($x=0; $x < strlen($string); $x++)
108		{
109			$js_encode .= '%' . bin2hex($string[$x]);
110		}
111		return '<script type="text/javascript" language="javascript">eval(unescape(\''.$js_encode.'\'))</script>';
112	}
113	elseif ($encode == 'hex')
114	{
115		preg_match('!^(.*)(\?.*)$!',$address,$match);
116		if(!empty($match[2]))
117		{
118        	$template_object->trigger_error("mailto: hex encoding does not work with extra attributes. Try javascript.");
119        	return;
120		}
121		$address_encode = "";
122		for ($x=0; $x < strlen($address); $x++)
123		{
124			if(preg_match('!\w!',$address[$x]))
125			{
126				$address_encode .= '%' . bin2hex($address[$x]);
127			}
128			else
129			{
130				$address_encode .= $address[$x];
131			}
132		}
133		$text_encode = "";
134		for ($x=0; $x < strlen($text); $x++)
135		{
136			$text_encode .= '&#x' . bin2hex($text[$x]).';';
137		}
138		return '<a href="mailto:'.$address_encode.'" '.$extra.'>'.$text_encode.'</a>';
139	}
140	else
141	{
142		// no encoding
143		return '<a href="mailto:'.$address.'" '.$extra.'>'.$text.'</a>';
144	}
145}
146
147?>
148