forked from kherel/selfprivacy.org.app
parent
8ea1b28d73
commit
1202e4ad53
@ -1,138 +1,99 @@ |
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import 'dart:math'; |
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|
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var generator = PasswordGenerator(); |
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|
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String genPass() { |
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generator.generate(8); |
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return generator.getGeneratedValue(); |
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} |
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|
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///Generates a password. |
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/// |
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///The password [_generatedValue] is of a specified length, including letters [_letterGen] of mixed cases, |
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///numbers [_numGen], and symbols[_symGen] depending on user choice. |
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class PasswordGenerator { |
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late bool _letterGen; |
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late bool _numGen; |
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late bool _symGen; |
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late String _generatedValue; |
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|
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///Constructor. |
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/// |
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///[_letterGen] is true to make password generation possible from the opening of the application, and |
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///[_generatedValue] is intialized to the value below so the text containing it can be first generated |
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///upon users request |
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PasswordGenerator() { |
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_letterGen = true; |
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_numGen = true; |
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_symGen = false; |
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_generatedValue = "Press Generate"; |
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} |
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|
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///Call to generate a value, of [n] length |
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void generate(int n) { |
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//Discards the old value |
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_generatedValue = ""; |
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|
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///Cannot generate a value without any character types selected |
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if (!_letterGen && !_numGen && !_symGen) { |
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_generatedValue = "No character type selected"; |
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return; |
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Random _rnd = Random(); |
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typedef StringGeneratorFunction = String Function(); |
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class StringGenerators { |
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static const letters = 'abcdefghijklmnopqrstuvwxyz'; |
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static const numbers = '1234567890'; |
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static const symbols = '_'; |
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|
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static String getRandomString( |
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int length, { |
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hasLowercaseLetters = false, |
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hasUppercaseLetters = false, |
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hasNumbers = false, |
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hasSymbols = false, |
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isStrict = false, |
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}) { |
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var chars = ''; |
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if (hasLowercaseLetters) chars += letters; |
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if (hasUppercaseLetters) chars += letters.toUpperCase(); |
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if (hasNumbers) chars += numbers; |
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if (hasSymbols) chars += symbols; |
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assert(chars.isNotEmpty, 'chart empty'); |
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if (!isStrict) { |
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return genString(length, chars); |
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} |
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///'Randomly' selectes caracter type to generate and append [toAppend] to [_generatedValue] |
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// ignore: unnecessary_statements |
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for (n; n > 0; n--) { |
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String? toAppend; |
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var random = new Random(); |
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|
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///loops until a valid character is generated, meaning the user has to check the character value |
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///to be generated. 'Randomly' picks a character type. |
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while (toAppend == null) { |
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int selector = random.nextInt(3); |
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|
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if (selector == 0) { |
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toAppend = _generateLetter(); |
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} else if (selector == 1) { |
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toAppend = _generateNumber(); |
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} else { |
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toAppend = _generateSymbol(); |
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} |
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} |
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|
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_generatedValue += toAppend; |
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toAppend = null; |
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var res = ''; |
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var loose = length; |
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if (hasLowercaseLetters) { |
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loose -= 1; |
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res += genString(1, letters); |
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} |
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} |
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|
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///Generates a letter when called. |
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String _generateLetter() { |
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if (!_letterGen) return ''; |
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///Finds the integer value for the range between a-z and A-Z, with [base] UTF-16 value for lowercase letters and |
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///[baseUpper] UTF-16 value for uppercase letters |
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int base = "a".codeUnitAt(0); |
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int baseUpper = "A".codeUnitAt(0); |
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int maxRand = ("z".codeUnitAt(0) - base) + 1; |
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Random random = new Random(); |
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|
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///Randomly selects between upper and lower case generation, randomly generates value from [maxRand], then adding base, |
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///which creates a UTF-16 encoded character to be converted into a string of one character between a-z/A-Z. |
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///This string is then returned. |
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if (random.nextInt(2) == 0) { |
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return String.fromCharCodes([random.nextInt(maxRand) + base]); |
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} else { |
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return String.fromCharCodes([random.nextInt(maxRand) + baseUpper]); |
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if (hasUppercaseLetters) { |
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loose -= 1; |
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res += genString(1, letters.toUpperCase()); |
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} |
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} |
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|
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///Generates a number when called |
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String? _generateNumber() { |
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if (!_numGen) return null; |
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///Finds the integer value for the range between 0-9 |
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int base = "0".codeUnitAt(0); |
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int maxRand = ("9".codeUnitAt(0) - base) + 1; |
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Random random = new Random(); |
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///Randomly generates value from [maxRand], then adding base, which creates a UTF-16 encoded character to be converted into a |
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///string of one character between 0-9. This string is then returned. |
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return String.fromCharCodes([random.nextInt(maxRand) + base]); |
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} |
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|
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///Generates a symbol when called |
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String? _generateSymbol() { |
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if (!_symGen) return null; |
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///Finds the integer value for the range between symbols !-. |
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///(note) which includes symbols !"#$%&'()*+,=. |
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int base = "!".codeUnitAt(0); |
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int maxRand = (".".codeUnitAt(0) - base) + 1; |
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Random random = new Random(); |
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///Randomly generates value from [maxRand], then adding base, which creates a UTF-16 encoded character to be |
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///converted into a string of one character between !-. . This string is then returned. |
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return String.fromCharCodes([random.nextInt(maxRand) + base]); |
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} |
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|
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///Toggles letter generation |
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void checkLetterGen(bool value) { |
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_letterGen = value; |
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} |
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if (hasNumbers) { |
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loose -= 1; |
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res += genString(1, numbers.toUpperCase()); |
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} |
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if (hasSymbols) { |
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loose -= 1; |
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res += genString(1, symbols); |
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} |
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res += genString(loose, chars); |
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///Toggles number generation |
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void checkNumGen(bool value) { |
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_numGen = value; |
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var shuffledlist = res.split('')..shuffle(); |
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return shuffledlist.join(); |
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} |
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///Toggles symbol generation |
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void checkSymGen(bool value) { |
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_symGen = value; |
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static String genString(int length, String chars) { |
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return String.fromCharCodes( |
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Iterable.generate( |
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length, |
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(_) => chars.codeUnitAt( |
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_rnd.nextInt(chars.length), |
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), |
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), |
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); |
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} |
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///Returns the generated value to be used by generator app |
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String getGeneratedValue() { |
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return _generatedValue; |
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} |
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static StringGeneratorFunction userPassword = () => getRandomString( |
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8, |
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hasLowercaseLetters: true, |
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hasUppercaseLetters: true, |
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hasNumbers: true, |
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isStrict: true, |
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); |
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static StringGeneratorFunction passwordSalt = () => getRandomString( |
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8, |
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hasLowercaseLetters: true, |
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); |
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|
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static StringGeneratorFunction simpleId = () => getRandomString( |
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5, |
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hasLowercaseLetters: true, |
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); |
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static StringGeneratorFunction dbPassword = () => getRandomString( |
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40, |
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hasLowercaseLetters: true, |
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hasUppercaseLetters: true, |
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hasNumbers: true, |
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hasSymbols: true, |
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); |
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static StringGeneratorFunction dbStorageName = () => getRandomString( |
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6, |
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hasLowercaseLetters: true, |
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hasUppercaseLetters: true, |
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hasNumbers: true, |
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); |
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} |
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@ -1,14 +0,0 @@ |
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import 'dart:math'; |
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|
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const _chars = |
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'AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz1234567890_'; |
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Random _rnd = Random(); |
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|
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String getRandomString(int length, [chars = _chars]) => String.fromCharCodes( |
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Iterable.generate( |
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length, |
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(_) => chars.codeUnitAt( |
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_rnd.nextInt(chars.length), |
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), |
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), |
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); |
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@ -1,30 +1,122 @@ |
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// This is a basic Flutter widget test. |
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// |
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// To perform an interaction with a widget in your test, use the WidgetTester |
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// utility that Flutter provides. For example, you can send tap and scroll |
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// gestures. You can also use WidgetTester to find child widgets in the widget |
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// tree, read text, and verify that the values of widget properties are correct. |
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import 'package:flutter/material.dart'; |
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import 'package:flutter_test/flutter_test.dart'; |
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import 'package:selfprivacy/main.dart'; |
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import 'package:selfprivacy/utils/password_generator.dart'; |
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void main() { |
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testWidgets('Counter increments smoke test', (WidgetTester tester) async { |
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// Build our app and trigger a frame. |
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await tester.pumpWidget(MyApp()); |
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group('StringGenerators', () { |
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group('Basic', () { |
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test('assert chart empty', () { |
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expect(() { |
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StringGenerators.getRandomString(8); |
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}, throwsAssertionError); |
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}); |
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// Verify that our counter starts at 0. |
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expect(find.text('0'), findsOneWidget); |
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expect(find.text('1'), findsNothing); |
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test('only lowercase string', () { |
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var length = 8; |
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var generatedString = |
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StringGenerators.getRandomString(length, hasLowercaseLetters: true); |
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// Tap the '+' icon and trigger a frame. |
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await tester.tap(find.byIcon(Icons.add)); |
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await tester.pump(); |
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expect(generatedString, isNot(matches(regExpNewLines))); |
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expect(generatedString, isNot(matches(regExpWhiteSpaces))); |
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expect(generatedString, isNot(matches(regExpNumbers))); |
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expect(generatedString, isNot(matches(regExpUppercaseLetters))); |
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expect(generatedString, isNot(matches(regExpSymbols))); |
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expect(generatedString.length, equals(length)); |
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expect(generatedString, matches(regExpLowercaseLetters)); |
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}); |
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// Verify that our counter has incremented. |
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expect(find.text('0'), findsNothing); |
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expect(find.text('1'), findsOneWidget); |
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test('only uppercase string', () { |
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var length = 8; |
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var generatedString = StringGenerators.getRandomString(length, |
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hasLowercaseLetters: false, hasUppercaseLetters: true); |
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expect(generatedString, isNot(matches(regExpNewLines))); |
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expect(generatedString, isNot(matches(regExpWhiteSpaces))); |
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expect(generatedString, isNot(matches(regExpNumbers))); |
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expect(generatedString, isNot(matches(regExpLowercaseLetters))); |
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expect(generatedString, isNot(matches(regExpSymbols))); |
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expect(generatedString.length, equals(length)); |
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expect(generatedString, matches(regExpUppercaseLetters)); |
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}); |
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|
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test('only numbers string', () { |
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var length = 8; |
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var generatedString = StringGenerators.getRandomString(length, |
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hasLowercaseLetters: false, |
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hasUppercaseLetters: false, |
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hasNumbers: true); |
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expect(generatedString, isNot(matches(regExpNewLines))); |
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expect(generatedString, isNot(matches(regExpWhiteSpaces))); |
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expect(generatedString, isNot(matches(regExpUppercaseLetters))); |
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expect(generatedString, isNot(matches(regExpLowercaseLetters))); |
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expect(generatedString, isNot(matches(regExpSymbols))); |
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expect(generatedString.length, equals(length)); |
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expect(generatedString, matches(regExpNumbers)); |
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}); |
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|
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test('only symbols string', () { |
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var length = 8; |
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var generatedString = StringGenerators.getRandomString( |
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length, |
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hasLowercaseLetters: false, |
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hasUppercaseLetters: false, |
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hasNumbers: false, |
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hasSymbols: true, |
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); |
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|
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expect(generatedString, isNot(matches(regExpNewLines))); |
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expect(generatedString, isNot(matches(regExpWhiteSpaces))); |
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expect(generatedString, isNot(matches(regExpUppercaseLetters))); |
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expect(generatedString, isNot(matches(regExpLowercaseLetters))); |
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expect(generatedString, isNot(matches(regExpNumbers))); |
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expect(generatedString.length, equals(length)); |
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expect(generatedString, matches(regExpSymbols)); |
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}); |
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}); |
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group('Strict mode', () { |
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test('All', () { |
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var length = 5; |
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var generatedString = StringGenerators.getRandomString(length, |
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hasLowercaseLetters: true, |
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hasUppercaseLetters: true, |
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hasNumbers: true, |
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hasSymbols: true, |
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isStrict: true); |
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expect(generatedString, isNot(matches(regExpNewLines))); |
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expect(generatedString, isNot(matches(regExpWhiteSpaces))); |
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expect(generatedString, matches(regExpLowercaseLetters)); |
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expect(generatedString, matches(regExpUppercaseLetters)); |
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expect(generatedString, matches(regExpNumbers)); |
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expect(generatedString, matches(regExpSymbols)); |
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expect(generatedString.length, equals(length)); |
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}); |
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test('Lowercase letters and numbers', () { |
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var length = 3; |
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var generatedString = StringGenerators.getRandomString(length, |
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hasLowercaseLetters: true, |
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hasUppercaseLetters: false, |
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hasNumbers: true, |
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hasSymbols: false, |
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isStrict: true); |
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|
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expect(generatedString, isNot(matches(regExpNewLines))); |
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expect(generatedString, isNot(matches(regExpWhiteSpaces))); |
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expect(generatedString, isNot(matches(regExpUppercaseLetters))); |
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expect(generatedString, isNot(matches(regExpSymbols))); |
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expect(generatedString, matches(regExpLowercaseLetters)); |
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expect(generatedString, matches(regExpNumbers)); |
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expect(generatedString.length, equals(length)); |
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}); |
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}); |
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}); |
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} |
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var regExpNewLines = RegExp(r"[\n\r]+"); |
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var regExpWhiteSpaces = RegExp(r"[\s]+"); |
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var regExpUppercaseLetters = RegExp(r"[A-Z]"); |
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var regExpLowercaseLetters = RegExp(r"[a-z]"); |
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var regExpNumbers = RegExp(r"[0-9]"); |
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var regExpSymbols = RegExp(r'(?:_|[^\w\s])+'); |
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|
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