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Date:: Sun Aug 28 08:55:14 2022 UTC
Message:: remove not needed functions
Actions:: History | Blame | Raw File
1 <?php
2 require_once './conf.php';
3 
4 define("SHORTER_NAME", "shortr");
5 define("SHORTER_VERSION", "v0.4");
6 define("CHARSET", "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789");
7 
8 $url = "";
9 $link = "";
10 $callback = "NO";
11 $dbh = new PDO('mysql:host='. DB_HOST . ';dbname='. DB_NAME , DB_USER, DB_PASS);
12 
13 if (DEBUG == 'true') {
14         ini_set('display_errors', 1);
15         ini_set('display_startup_errors', 1);
16         error_reporting(E_ALL);
17 } else {
18         ini_set('display_errors', 0);
19         ini_set('display_startup_errors', 0);           
20 }
21 
22 function generate_short($url, $dbh) {
23 	if(!preg_match("/^((https?|ftp)[:\/\/].*\/{2,})/i",$url)) {
24 		return false;
25 	}
26 	if (substr($url, 0, strlen(BASE_URL)) == BASE_URL){
27 		return false;
28 	}
29 	if (!empty($_SERVER['HTTP_X_CLIENTIP'])) {
30 		$clientip = $_SERVER['HTTP_X_CLIENTIP'];
31 	} else {
32 		$clientip = $_SERVER['REMOTE_ADDR'];
33 	}
34 	$sth = $dbh->prepare("SELECT id FROM " . DB_TABLE . " WHERE url=?");
35 	$sth->bindParam(1, $url, PDO::PARAM_STR);
36 	$sth->execute();
37 	if ($row = $sth->fetch(PDO::FETCH_ASSOC)) {
38 		$hash = $row['id'];
39 	} else {
40 		$hash = substr(str_shuffle(CHARSET), 0, HASH_LENGTH);
41 		$sth = $dbh->prepare("SELECT COUNT(*) FROM " . DB_TABLE . " WHERE id=?");
42 		$sth->bindParam(1, $hash, PDO::PARAM_STR, HASH_LENGTH);
43 		$sth->execute();
44 		$loop = 0;
45 		while ($sth->fetchColumn() > 0) {
46 			if ($loop == 10) {
47 				$hash = "ERROR<br />Unable to create hash!";
48 				break;
49 			}
50 			$hash = substr(str_shuffle(CHARSET), 0, HASH_LENGTH);
51 			$sth->bindParam(1, $hash, PDO::PARAM_STR, HASH_LENGTH);
52 			$sth->execute();
53 			$loop++;
54 		}
55 		try {
56 			$sth = $dbh->prepare("INSERT INTO " . DB_TABLE . " (id, url, ip, count) VALUES (?, ?, ?, '0')");
57 			$sth->bindParam(1, $hash, PDO::PARAM_STR, HASH_LENGTH);
58 			$sth->bindParam(2, $url, PDO::PARAM_STR);
59 			$sth->bindParam(3, $clientip, PDO::PARAM_STR, 255);
60 			$sth->execute();
61 		} catch (PDOException $e) {
62 			$hash = "ERROR<br />Failed to insert hash!";
63 		}
64 	}
65 	return $hash;
66 }
67 
68 function find_short($hash, $dbh) {
69 	$sth = $dbh->prepare("SELECT * FROM " . DB_TABLE . " WHERE id=?");
70 	$sth->bindParam(1, $hash, PDO::PARAM_STR, HASH_LENGTH);
71 	$sth->execute();
72 	if ($row = $sth->fetch(PDO::FETCH_ASSOC)) {
73 		$link = $row['url'];
74 		$sth = $dbh->prepare("UPDATE " . DB_TABLE . " SET count = count + 1 WHERE id=?");
75 		$sth->bindParam(1, $row['id'], PDO::PARAM_STR, HASH_LENGTH);
76 		$sth->execute();	
77 	} else {
78 		$link = false;
79 	}
80 	return $link;
81 }
82 
83 if (isset($_POST['url'])) {
84 	if ($_POST['url'] != '' && strlen($_POST['url']) > 0) {
85 		$link = generate_short($_POST['url'], $dbh);
86 	} else {
87 		$link = false;
88 	}
89 }
90 
91 if (isset($_GET['hash']) && $_GET['hash'] != '' && strlen($_GET['hash']) > 0) {
92 	$path = explode('/', $_SERVER['REQUEST_URI']);
93 	$uri = $path[count($path)-1];
94 	if ($uri != '') {
95 		$link = find_short($uri, $dbh);
96 		if ($link != '') {
97 			header("Cache-Control: no-cache, must-revalidate");
98 			header("Expires: Wed, 29 Feb 1984 00:00:00 GMT");
99 			header("Location: $link", TRUE, 301);
100 		}
101 	}
102 }
103 
104 if ($callback == 'NO') {
105 	$sth = $dbh->query("SELECT COUNT(*) FROM ". DB_TABLE);
106 	$count = $sth->fetchColumn();
107 ?>
108 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
109 <html>
110 <head>
111 <title><?php print SITE_TITLE ?></title>
112 <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
113 <meta name="keywords" content="shorter url tinyurl" /> 
114 <meta name="viewport" content="width=device-width, initial-scale=1" />
115 <style type="text/css" media="screen">
116 body {
117 	background: #282828;
118 	color: #ffffff;
119 	font-family: Arial,"MS Trebuchet",sans-serif;
120 	font-size: 14px;
121 	margin: 0;
122 	padding: 0;
123 	text-align: center;
124 }
125 
126 #container {
127 	width: 500px;
128 	margin: 0 auto;
129 	padding: 20px;
130 	display: block;
131 }
132 
133 #header {
134 	font-size: 20px;
135 	height: 100px;
136 	font-variant: small-caps;
137 }
138 
139 #content form input {
140 	width: 495px;
141 }
142 
143 #shorterurl_wrapper {
144 	width: 500px;
145 	height: 100px;
146 	border: 1px dashed;
147 	margin-top: 50px;
148 	background-color: #383838;
149 	text-align: center;
150 }
151 
152 #shorterurl {
153 	margin: 30px 30px 30px 30px;
154 	font-size: 25px;
155 	font-family: Verdana,Arial;
156 	font-weight: bold;
157 }
158 </style>
159 </head> 
160 </html>
161 <body>
162 <div id="container">
163 <div id="header">
164 <h1 id="shortertitle"><i><?php print SITE_TITLE ?></i></h1>
165 </div>
166 <div id="content">
167 <form id="shorterform" method="post">
168 <input id="url" type="text" name="url" value="<?php print $url ?>" />
169 </form>
170 <div id="shorterurl_wrapper">
171 <div id="shorterurl">
172 <?php 
173 	if ($link === false) {
174 		echo "<span style='color: red;'>Unknown / Invalid URL</span>"; 
175 	} elseif (str_contains($link, "ERROR")) {
176 		echo "<span style='color: red;'>$link</span>"; 
177 	} else {
178 		if ($link != '') {
179 			echo "<span style='color: white;'>" . BASE_URL . $link . "</span>";
180 		}
181 	}
182 ?>
183 </div>
184 </div>
185 </div>
186 <p>
187 <small>Currently holding <?php print "$count" ?> entries.<br /><br /><?php print SHORTER_NAME . " " . SHORTER_VERSION ?><br /></small>
188 </p>
189 </div>
190 </body>
191 </html>
192 <?php
193 }
194 ?>