PHP Example

1<?PHP
2    $url = $_POST["url"];
3    $secret = $_POST["md5"];
4
5    if (!$url && !$secret) {
6        $url = "http://limelighturl/file.ext";
7        $secret = "Secret";
8    }
9?>
10<html>
11    <head>
12        <title>MD5 Hash Sample Page</title>
13    </head>
14    <body>
15        <form method="post">
16            URL: <input type="text" name="url" value="<?PHP print $url;?>" size=80>
17            <br>
18            Secret: <input type="text" name="md5" value="<?PHP print $secret;?>">
19            <br>
20            <br>
21            <input type="submit">
22        </form>
23
24        <?PHP
25            if (ereg("[&?]h=", $url)) {
26                print "<p>Oops! You should not include the h= portion of the url. This script will calculate it for you!</p>\n";
27                exit();
28            }
29
30            $end = time() + 24*60*60; //24 hours in seconds
31            $md5 = md5("$secret$url");
32
33            if (strpos($url, '?') > 0) {
34                $auth_url = "$url&h=$md5";
35            } else {
36                $auth_url = "$url?h=$md5";
37            }
38
39            print "<table border>\n";
40            print "<tr><td>Secret:</td><td>$secret</td></tr>\n";
41            print "<tr><td>Url with options:</td><td>$url</td></tr>\n";
42            print "<tr><td>MD5 Hash Input:</td><td>$secret$url</td></tr>\n";
43            print "<tr><td>Generated MD5 Hash:</td><td>$md5</td></tr>\n";
44            print "<tr><td>Authenticated URL</td><td><a
45
46            href=\"$auth_url\">$auth_url</a></td></tr>\n";
47
48            print "</table>\n";
49
50            if (strpos($url, 'e=') <= 0) {
51                print "If you want to have an expiring url that expires after a day, enter the following into the URL box:\n";
52                print "<pre>\n";
53
54                if (strpos($url, '?'))
55                    print "$url&e=".(time()+24*60*60)."\n";
56                else
57                    print "$url?e=".(time()+24*60*60)."\n";
58
59                print "</pre>\n";
60            }
61
62            if (strpos($url, 'rs=') <= 0) {
63                print "If you want to have a rate limited url, enter the following into the URL box (where rs can equal any number greater than your minimum limit):\n";
64                print "<pre>\n";
65
66                if (strpos($url, '?'))
67                    print "$url&rs=85\n";
68                else
69                    print "$url?rs=85\n";
70
71                print "</pre>\n";
72            }
73
74            if (strpos($url, 'ri=') <= 0) {
75                print "If you want to allow the user to download a number of bytes w/out being ratelimited, enter the following into the URL box (where ri equals the value in bytes to not be rate limited ):\n";
76                print "<pre>\n";
77
78                if (strpos($url, '?'))
79                    print "$url&ri=1000\n";
80                else
81                    print "$url?ri=1000\n";
82
83                print "</pre>\n";
84            }
85        ?>
86    </body>
87</html>