mirror of https://github.com/apache/jclouds.git
PasswordGenerator only used in scriptbuilder
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/**
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* Licensed to jclouds, Inc. (jclouds) under one or more
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* contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. jclouds licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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package org.jclouds.util;
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import java.security.SecureRandom;
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import com.google.common.base.Supplier;
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/**
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* Cheap, lightweight, low-security password generator.
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*
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* @see <a href=
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* "http://www.java-forums.org/java-lang/7355-how-create-lightweight-low-security-password-generator.html"
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* />
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*/
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public enum PasswordGenerator implements Supplier<String> {
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INSTANCE;
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/** Minimum length for a decent password */
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public static final int MIN_LENGTH = 10;
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/** The random number generator. */
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protected static final SecureRandom r = new SecureRandom();
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/*
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* Set of characters that is valid. Must be printable, memorable, and
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* "won't break HTML" (i.e., not ' <', '>', '&', '=', ...). or break shell
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* commands (i.e., not ' <', '>', '$', '!', ...). I, L and O are good to
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* leave out, as are numeric zero and one.
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*/
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public static final char[] goodChar = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'j', 'k', 'm', 'n', 'p', 'q', 'r',
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's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'M', 'N', 'P', 'Q',
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'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '2', '3', '4', '5', '6', '7', '8', '9', '+', '-', '@', };
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@Override
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public String get() {
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StringBuilder sb = new StringBuilder();
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for (int i = 0; i < MIN_LENGTH; i++) {
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sb.append(goodChar[r.nextInt(goodChar.length)]);
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}
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return sb.toString();
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}
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}
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@ -22,6 +22,7 @@ import static com.google.common.base.Charsets.UTF_8;
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import java.io.File;
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import java.io.File;
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import java.io.IOException;
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import java.io.IOException;
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import java.security.SecureRandom;
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import java.util.Map;
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import java.util.Map;
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import javax.inject.Singleton;
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import javax.inject.Singleton;
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@ -29,7 +30,6 @@ import javax.inject.Singleton;
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import org.jclouds.crypto.Sha512Crypt;
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import org.jclouds.crypto.Sha512Crypt;
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import org.jclouds.crypto.SshKeys;
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import org.jclouds.crypto.SshKeys;
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import org.jclouds.scriptbuilder.statements.login.AdminAccess.Configuration;
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import org.jclouds.scriptbuilder.statements.login.AdminAccess.Configuration;
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import org.jclouds.util.PasswordGenerator;
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import com.google.common.base.Function;
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import com.google.common.base.Function;
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import com.google.common.base.Supplier;
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import com.google.common.base.Supplier;
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@ -59,7 +59,43 @@ public class DefaultConfiguration implements Configuration {
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}
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}
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}
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}
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};
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};
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private final Supplier<String> passwordGenerator = PasswordGenerator.INSTANCE;
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/**
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* Cheap, lightweight, low-security password generator.
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*
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* @see <a href=
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* "http://www.java-forums.org/java-lang/7355-how-create-lightweight-low-security-password-generator.html" />
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*/
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public enum PasswordGenerator implements Supplier<String> {
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INSTANCE;
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/** Minimum length for a decent password */
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public static final int MIN_LENGTH = 10;
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/** The random number generator. */
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protected static final SecureRandom r = new SecureRandom();
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/*
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* Set of characters that is valid. Must be printable, memorable, and "won't break HTML" (i.e., not ' <', '>',
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* '&', '=', ...). or break shell commands (i.e., not ' <', '>', '$', '!', ...). I, L and O are good to leave out,
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* as are numeric zero and one.
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*/
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public static final char[] goodChar = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'j', 'k', 'm', 'n', 'p', 'q',
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'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'M', 'N',
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'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '2', '3', '4', '5', '6', '7', '8', '9', '+', '-',
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'@', };
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@Override
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public String get() {
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StringBuilder sb = new StringBuilder();
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for (int i = 0; i < MIN_LENGTH; i++) {
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sb.append(goodChar[r.nextInt(goodChar.length)]);
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}
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return sb.toString();
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}
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}
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private final Function<String, String> cryptFunction = Sha512Crypt.function();
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private final Function<String, String> cryptFunction = Sha512Crypt.function();
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@Override
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@Override
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@ -74,7 +110,7 @@ public class DefaultConfiguration implements Configuration {
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@Override
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@Override
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public Supplier<String> passwordGenerator() {
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public Supplier<String> passwordGenerator() {
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return passwordGenerator;
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return PasswordGenerator.INSTANCE;
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}
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}
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@Override
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@Override
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