Mon 21 Jul 22:43:21 CEST 2025

js/com/pwgen.lw.js

@@ -0,0 +1,121 @@
+/**
+ **      ==============================
+ **       O           O      O   OOOO
+ **       O           O     O O  O   O
+ **       O           O     O O  O   O
+ **       OOOO   OOOO O     OOO  OOOO
+ **       O   O       O    O   O O   O
+ **       O   O       O    O   O O   O
+ **       OOOO        OOOO O   O OOOO
+ **      ==============================
+ **      Dr. Stefan Bosse http://www.bsslab.de
+ **
+ **      COPYRIGHT: THIS SOFTWARE, EXECUTABLE AND SOURCE CODE IS OWNED
+ **                 BY THE AUTHOR(S).
+ **                 THIS SOURCE CODE MAY NOT BE COPIED, EXTRACTED,
+ **                 MODIFIED, OR OTHERWISE USED IN A CONTEXT
+ **                 OUTSIDE OF THE SOFTWARE SYSTEM.
+ **
+ **    $AUTHORS:     Bermi Ferrer, Stefan Bosse 
+ **    $INITIAL:     (C) 2011-2015 Bermi Ferrer <bermi@bermilabs.com>, 2016-2017 bLAB
+ **    $REVESIO:     1.1.4
+ **
+ **    $INFO:
+ *
+ * password-generator using seedable random generator (fast,LQ)
+ * Random generator seed is current system time in microseconds or options.seed value.
+ * 
+ * options = {length,meorable,lowercase,uppercase,pattern,seed}
+ *
+ *     $ENDINFO
+ */
+
+var random = undefined;
+/* Antti Sykäri's algorithm adapted from Wikipedia
+** Returns a random generator function [0.0,1.0| with seed initialization
+*/
+var seed = function(s) {
+    var m_w  = s;
+    var m_z  = 987654321;
+    var mask = 0xffffffff;
+
+    return function() {
+      m_z = (36969 * (m_z & 65535) + (m_z >> 16)) & mask;
+      m_w = (18000 * (m_w & 65535) + (m_w >> 16)) & mask;
+
+      var result = ((m_z << 16) + m_w) & mask;
+      result /= 4294967296;
+
+      return result + 0.5;
+    }
+}
+
+module.exports.generate = function (options) {
+
+  
+  function pwgen (options) {
+    var localName, consonant, letter, vowel, pattern = options.pattern,
+        char = "", n, i, validChars = [], prefix=options.prefix;
+    letter = /[a-zA-Z]$/;
+    vowel = /[aeiouAEIOU]$/;
+    consonant = /[bcdfghjklmnpqrstvwxyzBCDFGHJKLMNPQRSTVWXYZ]$/;
+    if (options.length == null) {
+      options.length = 10;
+    }
+    if (pattern == null) {
+      pattern = /\w/;
+    }
+    if (prefix == null) {
+      prefix = '';
+    }
+
+    // Non memorable passwords will pick characters from a pre-generated
+    // list of characters
+    if (!options.memorable) {
+      for (i = 33; 126 > i; i += 1) {
+        char = String.fromCharCode(i);
+        if (char.match(pattern)) {
+          validChars.push(char);
+        }
+      }
+
+      if (!validChars.length) {
+        throw new Error("Could not find characters that match the " +
+          "password pattern " + pattern + ". Patterns must match individual " +
+          "characters, not the password as a whole.");
+      }
+    }
+
+
+    while (prefix.length < options.length) {
+      if (options.memorable) {
+        if (prefix.match(consonant)) {
+          pattern = vowel;
+        } else {
+          pattern = consonant;
+        }
+        n = rand(33, 126);
+        char = String.fromCharCode(n);
+      } else {
+        char = validChars[rand(0, validChars.length)];
+      }
+
+      if (options.lowercase) char = char.toLowerCase();
+      else if (options.uppercase) char = char.toUpperCase();
+      
+      if (char.match(pattern)) {
+        prefix = "" + prefix + char;
+      }
+    }
+    return prefix;
+  };
+
+  function rand(min, max) {
+    if (!random) {
+      random = seed(options.seed|((new Date().getTime())|0));
+    }
+    return Math.floor((random() * (max-min)) + min); 
+  }
+  
+  return pwgen(options);
+};