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/*
* ============LICENSE_START=======================================================
* DCAEGEN2-SERVICES-SDK
* ================================================================================
* Copyright (C) 2018 NOKIA Intellectual Property. All rights reserved.
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ============LICENSE_END=========================================================
*/
package org.onap.dcaegen2.services.sdk.security;
import java.io.IOException;
class EncodePassword {
private static final int MAX_PASSWORD_LENGTH = 64 * 1024;
private static final int ARGS_LENGTH_PASSWORD_PROVIDED = 1;
private final CryptPassword cryptPassword;
private final CharsFromStreamReader charsFromStreamReader;
public EncodePassword(CryptPassword cryptPassword, CharsFromStreamReader charsFromStreamReader) {
this.cryptPassword = cryptPassword;
this.charsFromStreamReader = charsFromStreamReader;
}
public static void main(String[] args) {
new EncodePassword(new CryptPassword(), new CharsFromStreamReader(MAX_PASSWORD_LENGTH)).run(args);
}
public void run(String[] args) {
try {
encodeRawInput(readPassword(args));
} catch (IOException ex) {
printErrorAndExit(ExitCode.IO_ERROR, "Error while reading the password: " + ex.getMessage());
}
}
private void encodeRawInput(CharSequence rawPassword) {
if (rawPassword == null || rawPassword.length() == 0) {
printErrorAndExit(ExitCode.INVALID_PASSWORD, "Password cannot be empty");
} else {
printWarningIfContainsEndlChars(rawPassword);
printResult(cryptPassword.encode(rawPassword));
}
}
private void printWarningIfContainsEndlChars(CharSequence rawPassword) {
if (rawPassword.chars().anyMatch(ch -> ch == '\n' || ch == '\r')) {
printWarning("Warning: Password contains end of lines characters.");
}
}
private CharSequence readPassword(String[] args) throws IOException {
return args.length >= ARGS_LENGTH_PASSWORD_PROVIDED
? args[0]
: charsFromStreamReader.readPasswordFromStdIn();
}
private void printWarning(String msg) {
System.err.println(msg);
}
void printErrorAndExit(ExitCode exitCode, String msg) {
System.err.println(msg);
System.exit(exitCode.value);
}
private void printResult(String encodedPassword) {
System.out.println(encodedPassword);
}
}
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