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88 lines
3.1 KiB
Java
88 lines
3.1 KiB
Java
// Copyright 2017 The Nomulus Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// 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, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package google.registry.tools;
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import static google.registry.util.DomainNameUtils.canonicalizeDomainName;
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import static java.nio.charset.StandardCharsets.UTF_8;
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import com.beust.jcommander.Parameter;
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import com.beust.jcommander.Parameters;
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import com.google.common.base.Joiner;
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import com.google.common.io.CharStreams;
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import com.google.common.io.Files;
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import google.registry.util.DomainNameUtils;
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import google.registry.util.Idn;
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import google.registry.util.NonFinalForTesting;
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import java.io.File;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.util.List;
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import java.util.Set;
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import java.util.TreeSet;
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/** Command to clean up a set of labels and turn them into punycode. */
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@Parameters(commandDescription = "Canonicalize domain labels")
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final class CanonicalizeLabelsCommand implements Command {
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@Parameter(
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description = "Filename of file containing domain labels, one per line",
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required = true)
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private List<String> mainParameters;
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@NonFinalForTesting
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private static InputStream stdin = System.in;
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@Override
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public void run() throws IOException {
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Set<String> labels = new TreeSet<>();
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for (String label : mainParameters.isEmpty()
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? CharStreams.readLines(new InputStreamReader(stdin))
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: Files.readLines(new File(mainParameters.get(0)), UTF_8)) {
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label = label.trim();
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if (label.startsWith("-")) {
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label = label.substring(1);
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}
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if (label.endsWith("-")) {
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label = label.substring(0, label.length() - 1);
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}
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String canonical = canonicalize(label);
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if (canonical.startsWith(DomainNameUtils.ACE_PREFIX)
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&& Idn.toUnicode(canonical).equals(canonical)) {
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System.err.println("Bad IDN: " + label);
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continue; // Bad IDN code points.
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}
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labels.add(canonical);
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if (!canonical.startsWith("xn--")) {
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// Using both "" and "-" to canonicalize labels.
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labels.add(canonicalize(label.replaceAll(" ", "")));
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labels.add(canonicalize(label.replaceAll(" ", "-")));
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labels.add(canonicalize(label.replaceAll("_", "")));
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labels.add(canonicalize(label.replaceAll("_", "-")));
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}
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}
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labels.remove(""); // We used "" for invalid labels.
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System.out.println(Joiner.on('\n').join(labels));
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}
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private String canonicalize(String rawLabel) {
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try {
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return canonicalizeDomainName(rawLabel.replaceAll(" ", ""));
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} catch (Exception e) {
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System.err.printf("Error canonicalizing %s: %s\n", rawLabel, e.getMessage());
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return "";
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}
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}
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}
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