mertenvg · December 20, 2012 14:10 · Dec 20, 2012
diff --git a/.htaccess b/.htaccess
@@ -0,0 +1,10 @@
+<IfModule mod_rewrite.c>
+
+    RewriteEngine On
+    RewriteBase /
+
+    RewriteCond %{REQUEST_FILENAME} !-f
+    RewriteCond %{REQUEST_FILENAME} !-d
+    RewriteRule .* /passgen/index.php  [L,QSA]
+
+</IfModule>
diff --git a/index.php b/index.php
@@ -0,0 +1,162 @@
+<?php
+
+/**
+ * Generate a Password
+ */
+class PassGen
+{
+
+    /**
+     * Constructor
+     */
+    public function __construct()
+    {
+        $basePath = basename(__DIR__);
+
+        $uri = filter_input(INPUT_SERVER, 'REQUEST_URI');
+        $uri = trim(str_replace("/$basePath", "", $uri), '/');
+
+        if (empty($uri)) {
+            echo $this->instructions();
+            return;
+        }
+
+        $options = explode('/', $uri);
+
+        $length = null;
+        $numbers = true;
+        $uppercase = true;
+        $lowercase = true;
+        $othercharsArr = array();
+
+        foreach ($options as $option) {
+            if (is_numeric($option) && is_null($length)) {
+                $length = intval($option);
+                continue;
+            }
+            if ($option === '!nums') {
+                $numbers = false;
+                continue;
+            }
+            if ($option === '!uc') {
+                $uppercase = false;
+                continue;
+            }
+            if ($option === '!lc') {
+                $lowercase = false;
+                continue;
+            }
+            array_push($othercharsArr, $option);
+        }
+
+        $otherchars = implode('', $othercharsArr);
+
+        if (is_null($length)) {
+            $length = 8;
+        }
+
+        echo self::GeneratePassword($length, $numbers, $uppercase, $lowercase, $otherchars);
+    }
+
+    /**
+    * Print the usage instructions
+    */
+    protected function instructions()
+    {
+        $host = filter_input(INPUT_SERVER, 'HTTP_HOST');
+        $basePath = basename(__DIR__);
+
+        $chars = urlencode('!@#$%^&*()_+-=');
+
+        return <<<EOI
+<pre>
+/**
+ * Generate a password of the given length using a simple url
+ *
+ * Use any of the following options in any order to generate a password.
+ * Ommitting all options will show this usage guide.
+ *
+ * http://$host/$basePath/[length]/!uc/!lc/!nums/[other]
+ * [length]     : length of password as a numeric value
+ * !uc          : no upper case characters
+ * !lc          : no lower case characters
+ * !nums        : no numbers
+ * [other]      : other allowed characters
+ *
+ * Samples:
+ * <a href="http://$host/$basePath/12/{$this->encode('!@#$%^&*()_+-=')}">http://$host/$basePath/12/!@#$%^&*()_+-=</a> - 12 character including [a-Z0-9!@#$%^&*()_+-=]
+ * <a href="http://$host/$basePath/20/!lc">http://$host/$basePath/12/!lc</a> - 20 character including [A-Z0-9]
+ * <a href="http://$host/$basePath/64/!lc/!uc/ABCDEF">http://$host/$basePath/64/!lc/!uc/ABCDEF</a> - 64 character including [A-F0-9]
+ * <a href="http://$host/$basePath/32/!lc/!uc/ABCDEF">http://$host/$basePath/32/!lc/!uc/ABCDEF</a> - 32 character including [A-F0-9]
+ * <a href="http://$host/$basePath/64">http://$host/$basePath/64</a> - 64 character including [a-Z0-9]
+ * <a href="http://$host/$basePath/32">http://$host/$basePath/32</a> - 32 character including [a-Z0-9]
+ */
+</pre>
+EOI;
+    }
+
+    /**
+    * local shortcut to urlencode;
+    */
+    protected function encode($str)
+    {
+        return urlencode($str);
+    }
+
+    /**
+    * Generate a random password.
+    *
+    * @param integer $length
+    * @param boolean $numbers
+    * @param boolean $uppercase
+    * @param boolean $lowercase
+    * @param string $otherchars
+    * @return string
+    */
+    public static function GeneratePassword($length = 8, $numbers = true, $uppercase = true, $lowercase = true, $otherchars = '') {
+        $charlist = '';
+
+        if ($numbers) {
+            $charlist .= '0123456789';
+        }
+
+        if ($uppercase) {
+            $charlist .= 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
+        }
+
+        if ($lowercase) {
+            $charlist .= 'abcdefghijklmnopqrstuvwxyz';
+        }
+
+        if ($otherchars) {
+            $charlist .= $otherchars;
+        }
+
+        $generated = '';
+
+        if (is_numeric($length) && $length > 0) {
+            $charlistLength = strlen($charlist);
+            if ($charlistLength > 0) {
+                for ($i = 0; $i < $length; $i++) {
+                    $randomIndex = rand(0, $charlistLength - 1);
+                    $generated .= substr($charlist, $randomIndex, 1);
+                }
+                return $generated;
+            } else {
+                trigger_error('Attempting to generate a password with no allowed characters.', E_USER_ERROR);
+            }
+        } else {
+            trigger_error('Invalid length specified for password. Length must be a numeric value greater than 0.', E_USER_ERROR);
+        }
+    }
+
+    /**
+     * Destructor
+     */
+    public function __destruct()
+    {
+        // insert code here.
+    }
+}
+
+new PassGen;