From 8c3598b441a3e5f0ba2e3ab887c3d1633ce23638 Mon Sep 17 00:00:00 2001 From: the-java-guy <39062630+the-java-guy@users.noreply.github.com> Date: Thu, 18 Oct 2018 09:41:25 +0530 Subject: [PATCH] BAEL - 2166 (#5379) * Bean Object, server side and client side example for event streaming example * BAEL-1628 Access a File from the Classpath in a Spring Application * inputstream retrieval added * Removed files related to evaluation article * + Aligning code to the article. Removed Utility methods and classes * Precommit fix * PMD fixes * Code Review changes Refactored : whenResourceUtils_thenReadSuccessful * BAEL-1934 * +indentation correction in pom.xml * synced with master * Precommit : rebase * BAEL-1782 * BAEL - 2166 : Password Generation * Removed unnecessary javaDoc * Segregated utility method --- java-strings/pom.xml | 12 +- .../password/RandomPasswordGenerator.java | 152 ++++++++++++++++++ .../password/StringPasswordUnitTest.java | 64 ++++++++ 3 files changed, 227 insertions(+), 1 deletion(-) create mode 100644 java-strings/src/main/java/com/baeldung/string/password/RandomPasswordGenerator.java create mode 100644 java-strings/src/test/java/com/baeldung/string/password/StringPasswordUnitTest.java diff --git a/java-strings/pom.xml b/java-strings/pom.xml index b1ba49b33a..a43490ce5c 100644 --- a/java-strings/pom.xml +++ b/java-strings/pom.xml @@ -68,7 +68,17 @@ emoji-java 4.0.0 - + + + org.passay + passay + 1.3.1 + + + org.apache.commons + commons-text + 1.4 + diff --git a/java-strings/src/main/java/com/baeldung/string/password/RandomPasswordGenerator.java b/java-strings/src/main/java/com/baeldung/string/password/RandomPasswordGenerator.java new file mode 100644 index 0000000000..46af4d7c51 --- /dev/null +++ b/java-strings/src/main/java/com/baeldung/string/password/RandomPasswordGenerator.java @@ -0,0 +1,152 @@ +package com.baeldung.string.password; + +import java.security.SecureRandom; +import java.util.Collections; +import java.util.List; +import java.util.Random; +import java.util.stream.Collectors; +import java.util.stream.IntStream; +import java.util.stream.Stream; + +import org.apache.commons.lang3.RandomStringUtils; +import org.apache.commons.text.RandomStringGenerator; +import org.passay.CharacterData; +import org.passay.CharacterRule; +import org.passay.EnglishCharacterData; +import org.passay.PasswordGenerator; + +public class RandomPasswordGenerator { + + /** + * Special characters allowed in password. + */ + public static final String ALLOWED_SPL_CHARACTERS = "!@#$%^&*()_+"; + + public static final String ERROR_CODE = "ERRONEOUS_SPECIAL_CHARS"; + + Random random = new SecureRandom(); + + public String generatePassayPassword() { + PasswordGenerator gen = new PasswordGenerator(); + CharacterData lowerCaseChars = EnglishCharacterData.LowerCase; + CharacterRule lowerCaseRule = new CharacterRule(lowerCaseChars); + lowerCaseRule.setNumberOfCharacters(2); + CharacterData upperCaseChars = EnglishCharacterData.UpperCase; + CharacterRule upperCaseRule = new CharacterRule(upperCaseChars); + upperCaseRule.setNumberOfCharacters(2); + CharacterData digitChars = EnglishCharacterData.Digit; + CharacterRule digitRule = new CharacterRule(digitChars); + digitRule.setNumberOfCharacters(2); + CharacterData specialChars = new CharacterData() { + public String getErrorCode() { + return ERROR_CODE; + } + + public String getCharacters() { + return ALLOWED_SPL_CHARACTERS; + } + }; + CharacterRule splCharRule = new CharacterRule(specialChars); + splCharRule.setNumberOfCharacters(2); + String password = gen.generatePassword(10, splCharRule, lowerCaseRule, upperCaseRule, digitRule); + return password; + } + + public String generateCommonTextPassword() { + String pwString = generateRandomSpecialCharacters(2).concat(generateRandomNumbers(2)) + .concat(generateRandomAlphabet(2, true)) + .concat(generateRandomAlphabet(2, false)) + .concat(generateRandomCharacters(2)); + List pwChars = pwString.chars() + .mapToObj(data -> (char) data) + .collect(Collectors.toList()); + Collections.shuffle(pwChars); + String password = pwChars.stream() + .collect(StringBuilder::new, StringBuilder::append, StringBuilder::append) + .toString(); + return password; + } + + public String generateCommonsLang3Password() { + String upperCaseLetters = RandomStringUtils.random(2, 65, 90, true, true); + String lowerCaseLetters = RandomStringUtils.random(2, 97, 122, true, true); + String numbers = RandomStringUtils.randomNumeric(2); + String specialChar = RandomStringUtils.random(2, 33, 47, false, false); + String totalChars = RandomStringUtils.randomAlphanumeric(2); + String combinedChars = upperCaseLetters.concat(lowerCaseLetters) + .concat(numbers) + .concat(specialChar) + .concat(totalChars); + List pwdChars = combinedChars.chars() + .mapToObj(c -> (char) c) + .collect(Collectors.toList()); + Collections.shuffle(pwdChars); + String password = pwdChars.stream() + .collect(StringBuilder::new, StringBuilder::append, StringBuilder::append) + .toString(); + return password; + } + + public String generateSecureRandomPassword() { + Stream pwdStream = Stream.concat(getRandomNumbers(2), Stream.concat(getRandomSpecialChars(2), Stream.concat(getRandomAlphabets(2, true), getRandomAlphabets(4, false)))); + List charList = pwdStream.collect(Collectors.toList()); + Collections.shuffle(charList); + String password = charList.stream() + .collect(StringBuilder::new, StringBuilder::append, StringBuilder::append) + .toString(); + return password; + } + + public String generateRandomSpecialCharacters(int length) { + RandomStringGenerator pwdGenerator = new RandomStringGenerator.Builder().withinRange(33, 45) + .build(); + return pwdGenerator.generate(length); + } + + public String generateRandomNumbers(int length) { + RandomStringGenerator pwdGenerator = new RandomStringGenerator.Builder().withinRange(48, 57) + .build(); + return pwdGenerator.generate(length); + } + + public String generateRandomCharacters(int length) { + RandomStringGenerator pwdGenerator = new RandomStringGenerator.Builder().withinRange(48, 57) + .build(); + return pwdGenerator.generate(length); + } + + public String generateRandomAlphabet(int length, boolean lowerCase) { + int low; + int hi; + if (lowerCase) { + low = 97; + hi = 122; + } else { + low = 65; + hi = 90; + } + RandomStringGenerator pwdGenerator = new RandomStringGenerator.Builder().withinRange(low, hi) + .build(); + return pwdGenerator.generate(length); + } + + public Stream getRandomAlphabets(int count, boolean upperCase) { + IntStream characters = null; + if (upperCase) { + characters = random.ints(count, 65, 90); + } else { + characters = random.ints(count, 97, 122); + } + return characters.mapToObj(data -> (char) data); + } + + public Stream getRandomNumbers(int count) { + IntStream numbers = random.ints(count, 48, 57); + return numbers.mapToObj(data -> (char) data); + } + + public Stream getRandomSpecialChars(int count) { + IntStream specialChars = random.ints(count, 33, 45); + return specialChars.mapToObj(data -> (char) data); + } +} diff --git a/java-strings/src/test/java/com/baeldung/string/password/StringPasswordUnitTest.java b/java-strings/src/test/java/com/baeldung/string/password/StringPasswordUnitTest.java new file mode 100644 index 0000000000..bfd4b0fe8e --- /dev/null +++ b/java-strings/src/test/java/com/baeldung/string/password/StringPasswordUnitTest.java @@ -0,0 +1,64 @@ +package com.baeldung.string.password; + +import static org.junit.Assert.assertTrue; + +import org.junit.Test; + +/** + * Examples of passwords conforming to various specifications, using different libraries. + * + */ +public class StringPasswordUnitTest { + + RandomPasswordGenerator passGen = new RandomPasswordGenerator(); + + @Test + public void whenPasswordGeneratedUsingPassay_thenSuccessful() { + String password = passGen.generatePassayPassword(); + int specialCharCount = 0; + for (char c : password.toCharArray()) { + if (c >= 33 || c <= 47) { + specialCharCount++; + } + } + assertTrue("Password validation failed in Passay", specialCharCount >= 2); + } + + @Test + public void whenPasswordGeneratedUsingCommonsText_thenSuccessful() { + RandomPasswordGenerator passGen = new RandomPasswordGenerator(); + String password = passGen.generateCommonTextPassword(); + int lowerCaseCount = 0; + for (char c : password.toCharArray()) { + if (c >= 97 || c <= 122) { + lowerCaseCount++; + } + } + assertTrue("Password validation failed in commons-text ", lowerCaseCount >= 2); + } + + @Test + public void whenPasswordGeneratedUsingCommonsLang3_thenSuccessful() { + String password = passGen.generateCommonsLang3Password(); + int numCount = 0; + for (char c : password.toCharArray()) { + if (c >= 48 || c <= 57) { + numCount++; + } + } + assertTrue("Password validation failed in commons-lang3", numCount >= 2); + } + + @Test + public void whenPasswordGeneratedUsingSecureRandom_thenSuccessful() { + String password = passGen.generateSecureRandomPassword(); + int specialCharCount = 0; + for (char c : password.toCharArray()) { + if (c >= 33 || c <= 47) { + specialCharCount++; + } + } + assertTrue("Password validation failed in Secure Random", specialCharCount >= 2); + } + +}