--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/includes/clientside/static/pwstrength.js Tue Sep 18 00:31:22 2007 -0400
@@ -0,0 +1,273 @@
+/*
+ * Enano - an open-source CMS capable of wiki functions, Drupal-like sidebar blocks, and everything in between
+ * Copyright (C) 2006-2007 Dan Fuhry
+ * pwstrength - Password evaluation and strength testing algorithm
+ *
+ * This program is Free Software; you can redistribute and/or modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
+ */
+
+function password_score_len(password)
+{
+ if ( typeof(password) != "string" )
+ {
+ return -10;
+ }
+ var len = password.length;
+ var score = len - 7;
+ return score;
+}
+
+function password_score(password)
+{
+ if ( typeof(password) != "string" )
+ {
+ return -10;
+ }
+ var score = 0;
+ var debug = [];
+ // length check
+ var lenscore = password_score_len(password);
+
+ debug.push(''+lenscore+' points for length');
+
+ score += lenscore;
+
+ var has_upper_lower = false;
+ var has_symbols = false;
+ var has_numbers = false;
+
+ // contains uppercase and lowercase
+ if ( password.match(/[A-z]+/) && password.toLowerCase() != password )
+ {
+ score += 1;
+ has_upper_lower = true;
+ debug.push('1 point for having uppercase and lowercase');
+ }
+
+ // contains symbols
+ if ( password.match(/[^A-z0-9]+/) )
+ {
+ score += 1;
+ has_symbols = true;
+ debug.push('1 point for having nonalphanumeric characters (matching /[^A-z0-9]+/)');
+ }
+
+ // contains numbers
+ if ( password.match(/[0-9]+/) )
+ {
+ score += 1;
+ has_numbers = true;
+ debug.push('1 point for having numbers');
+ }
+
+ if ( has_upper_lower && has_symbols && has_numbers && password.length >= 9 )
+ {
+ // if it has uppercase and lowercase letters, symbols, and numbers, and is of considerable length, add some serious points
+ score += 4;
+ debug.push('4 points for having uppercase and lowercase, numbers, and nonalphanumeric and being more than 8 characters');
+ }
+ else if ( has_upper_lower && has_symbols && has_numbers && password.length >= 6 )
+ {
+ // still give some points for passing complexity check
+ score += 2;
+ debug.push('2 points for having uppercase and lowercase, numbers, and nonalphanumeric');
+ }
+ else if(( ( has_upper_lower && has_symbols ) ||
+ ( has_upper_lower && has_numbers ) ||
+ ( has_symbols && has_numbers ) ) && password.length >= 6 )
+ {
+ // if 2 of the three main complexity checks passed, add a point
+ score += 1;
+ debug.push('1 point for having 2 of 3 complexity checks');
+ }
+ else if ( ( !has_upper_lower && !has_numbers && has_symbols ) ||
+ ( !has_upper_lower && !has_symbols && has_numbers ) ||
+ ( !has_numbers && !has_symbols && has_upper_lower ) )
+ {
+ score += -2;
+ debug.push('-2 points for only meeting 1 complexity check');
+ }
+ else if ( password.match(/^[0-9]*?([a-z]+)[0-9]?$/) )
+ {
+ // password is something like magnum1 which will be cracked in seconds
+ score += -4;
+ debug.push('-4 points for being of the form [number][word][number], which is easily cracked');
+ }
+ else if ( !has_upper_lower && !has_numbers && !has_symbols )
+ {
+ // this is if somehow the user inputs a password that doesn't match the rule above, but still doesn't contain upper and lowercase, numbers, or symbols
+ debug.push('-3 points for not meeting any complexity checks');
+ score += -3;
+ }
+
+ //
+ // Repetition
+ // Example: foobar12345 should be deducted points, where f1o2o3b4a5r should be given points
+ // None of the positive ones kick in unless the length is at least 8
+ //
+
+ if ( password.match(/([A-Z][A-Z][A-Z][A-Z]|[a-z][a-z][a-z][a-z])/) )
+ {
+ debug.push('-2 points for having more than 4 letters of the same case in a row');
+ score += -2;
+ }
+ else if ( password.match(/([A-Z][A-Z][A-Z]|[a-z][a-z][a-z])/) )
+ {
+ debug.push('-1 points for having more than 3 letters of the same case in a row');
+ score += -1;
+ }
+ else if ( password.match(/[A-z]/) && !password.match(/([A-Z][A-Z][A-Z]|[a-z][a-z][a-z])/) && password.length >= 8 )
+ {
+ debug.push('1 point for never having more than 2 letters of the same case in a row');
+ score += 1;
+ }
+
+ if ( password.match(/[0-9][0-9][0-9][0-9]/) )
+ {
+ debug.push('-2 points for having 4 or more numbers in a row');
+ score += -2;
+ }
+ else if ( password.match(/[0-9][0-9][0-9]/) )
+ {
+ debug.push('-1 points for having 3 or more numbers in a row');
+ score += -1;
+ }
+ else if ( has_numbers && !password.match(/[0-9][0-9][0-9]/) && password.length >= 8 )
+ {
+ debug.push('1 point for never more than 2 numbers in a row');
+ score += -1;
+ }
+
+ // make passwords like fooooooooooooooooooooooooooooooooooooo totally die by subtracting a point for each character repeated at least 3 times in a row
+ var prev_char = '';
+ var warn = false;
+ var loss = 0;
+ for ( var i = 0; i < password.length; i++ )
+ {
+ var chr = password.substr(i, 1);
+ if ( chr == prev_char && warn )
+ {
+ loss += -1;
+ }
+ else if ( chr == prev_char && !warn )
+ {
+ warn = true;
+ }
+ else if ( chr != prev_char && warn )
+ {
+ warn = false;
+ }
+ prev_char = chr;
+ }
+ if ( loss < 0 )
+ {
+ debug.push(''+loss+' points for immediate character repetition');
+ score += loss;
+ // this can bring the score below -10 sometimes
+ if ( score < -10 )
+ {
+ debug.push('Score set to -10 because it went below that floor');
+ score = -10;
+ }
+ }
+
+ var debug_txt = "<b>How this score was calculated</b>\nYour score was tallied up based on an extensive algorithm which outputted\nthe following scores based on traits of your password. Above you can see the\ncomposite score; your individual scores based on certain tests are below.\n\nThe scale is open-ended, with a minimum score of -10. 10 is very strong, 4\nis strong, 1 is good and -3 is fair. Below -3 scores \"Weak.\"\n\n";
+ for ( var i = 0; i < debug.length; i++ )
+ {
+ debug_txt += debug[i] + "\n";
+ }
+
+ if ( window.console )
+ window.console.info(debug_txt);
+ else if ( document.getElementById('passdebug') )
+ document.getElementById('passdebug').innerHTML = debug_txt;
+
+ return score;
+}
+
+function password_score_draw(score)
+{
+ // some colors are from the Gmail sign-up form
+ if ( score >= 10 )
+ {
+ var color = '#000000';
+ var fgcolor = '#666666';
+ var str = 'Very strong (score: '+score+')';
+ }
+ else if ( score > 3 )
+ {
+ var color = '#008000';
+ var fgcolor = '#004000';
+ var str = 'Strong (score: '+score+')';
+ }
+ else if ( score >= 1 )
+ {
+ var color = '#6699cc';
+ var fgcolor = '#4477aa';
+ var str = 'Good (score: '+score+')';
+ }
+ else if ( score >= -3 )
+ {
+ var color = '#f5ac00';
+ var fgcolor = '#ffcc33';
+ var str = 'Fair (score: '+score+')';
+ }
+ else
+ {
+ var color = '#aa0033';
+ var fgcolor = '#FF6060';
+ var str = 'Weak (score: '+score+')';
+ }
+ return {
+ color: color,
+ fgcolor: fgcolor,
+ str: str
+ };
+}
+
+function password_score_field(field)
+{
+ var indicator = false;
+ if ( field.nextSibling )
+ {
+ if ( field.nextSibling.className == 'password-checker' )
+ {
+ indicator = field.nextSibling;
+ }
+ }
+ if ( !indicator )
+ {
+ var indicator = document.createElement('span');
+ indicator.className = 'password-checker';
+ if ( field.nextSibling )
+ {
+ field.parentNode.insertBefore(indicator, field.nextSibling);
+ }
+ else
+ {
+ field.parentNode.appendChild(indicator);
+ }
+ }
+ var score = password_score(field.value);
+ var data = password_score_draw(score);
+ indicator.style.color = data.color;
+ indicator.style.fontWeight = 'bold';
+ indicator.innerHTML = ' ' + data.str;
+
+ if ( document.getElementById('pwmeter') )
+ {
+ var div = document.getElementById('pwmeter');
+ div.style.width = '250px';
+ score += 10;
+ if ( score > 25 )
+ score = 25;
+ div.style.backgroundColor = data.color;
+ var width = Math.round( score * (250 / 25) );
+ div.innerHTML = '<div style="width: '+width+'px; background-color: '+data.fgcolor+'; height: 8px;"></div>';
+ }
+}
+