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https://github.com/pgpainless/pgpainless.git
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Add support for different regex parsers
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8 changed files with 270 additions and 1 deletions
28
hsregex/build.gradle
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28
hsregex/build.gradle
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// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
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//
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// SPDX-License-Identifier: Apache-2.0
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plugins {
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id 'java-library'
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}
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group 'org.pgpainless'
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repositories {
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mavenCentral()
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mavenLocal()
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}
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dependencies {
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testImplementation "org.junit.jupiter:junit-jupiter-api:$junitVersion"
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testRuntimeOnly "org.junit.jupiter:junit-jupiter-engine:$junitVersion"
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implementation(project(":pgpainless-core"))
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// Henry Spencers Regular Expression (RegEx packets)
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implementation 'com.basistech.tclre:tcl-regex:0.14.5'
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}
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test {
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useJUnitPlatform()
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}
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// SPDX-FileCopyrightText: 2022 Paul Schaub <vanitasvitae@fsfe.org>
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//
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// SPDX-License-Identifier: Apache-2.0
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package org.pgpainless.algorithm;
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import com.basistech.tclre.HsrePattern;
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import com.basistech.tclre.PatternFlags;
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import com.basistech.tclre.RePattern;
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import com.basistech.tclre.RegexException;
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public class HSRegexInterpreterFactory extends RegexInterpreterFactory {
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public Regex instantiate(String regex) {
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return new Regex() {
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private final RePattern pattern;
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{
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try {
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pattern = HsrePattern.compile(regex, PatternFlags.ADVANCED);
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} catch (RegexException e) {
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throw new IllegalArgumentException(e);
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}
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}
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@Override
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public boolean matches(String string) {
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return pattern.matcher(string).find();
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}
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};
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}
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}
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// SPDX-FileCopyrightText: 2022 Paul Schaub <vanitasvitae@fsfe.org>
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//
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// SPDX-License-Identifier: Apache-2.0
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/**
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* Regex interpreter implementation based on Henry Spencers Regular Expression library.
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*
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* @see <a href="https://www.rfc-editor.org/rfc/rfc4880#section-8">RFC4880 - §8. Regular Expressions</a>
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*/
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package org.pgpainless.algorithm;
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@ -30,4 +30,7 @@ dependencies {
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// @Nullable, @Nonnull annotations
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implementation "com.google.code.findbugs:jsr305:3.0.2"
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// HSRE regex for tests
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testImplementation project(":hsregex")
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}
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// SPDX-FileCopyrightText: 2022 Paul Schaub <vanitasvitae@fsfe.org>
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//
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// SPDX-License-Identifier: Apache-2.0
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package org.pgpainless.algorithm;
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import org.pgpainless.key.util.UserId;
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public interface Regex {
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/**
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* Return true, if the regex matches the given user-id.
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*
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* @param userId userId
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* @return true if matches, false otherwise
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*/
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default boolean matches(UserId userId) {
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return matches(userId.toString());
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}
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/**
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* Return true, if the regex matches the given string.
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*
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* @param string string
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* @return true if matches, false otherwise
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*/
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boolean matches(String string);
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}
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// SPDX-FileCopyrightText: 2022 Paul Schaub <vanitasvitae@fsfe.org>
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//
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// SPDX-License-Identifier: Apache-2.0
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package org.pgpainless.algorithm;
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import javax.annotation.Nonnull;
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import java.util.regex.Pattern;
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public abstract class RegexInterpreterFactory {
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private static RegexInterpreterFactory INSTANCE;
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public static RegexInterpreterFactory getInstance() {
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if (INSTANCE == null) {
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INSTANCE = new JavaRegexInterpreterFactory();
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}
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return INSTANCE;
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}
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public static void setInstance(@Nonnull RegexInterpreterFactory instance) {
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INSTANCE = instance;
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}
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public static Regex create(String regex) {
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return getInstance().instantiate(regex);
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}
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public abstract Regex instantiate(String regex) throws IllegalArgumentException;
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public static class JavaRegexInterpreterFactory extends RegexInterpreterFactory {
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@Override
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public Regex instantiate(String regex) {
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return new Regex() {
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private final Pattern pattern = Pattern.compile(regex);
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@Override
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public boolean matches(String string) {
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return pattern.matcher(string).find();
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}
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};
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}
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}
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}
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// SPDX-FileCopyrightText: 2022 Paul Schaub <vanitasvitae@fsfe.org>
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//
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// SPDX-License-Identifier: Apache-2.0
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package org.pgpainless.algorithm;
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import static org.junit.jupiter.api.Assertions.assertFalse;
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import static org.junit.jupiter.api.Assertions.assertTrue;
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import java.util.stream.Stream;
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import org.junit.jupiter.api.Named;
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import org.junit.jupiter.params.ParameterizedTest;
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import org.junit.jupiter.params.provider.Arguments;
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import org.junit.jupiter.params.provider.MethodSource;
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import org.pgpainless.key.util.UserId;
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public class RegexTest {
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private static Stream<Arguments> provideRegexInterpreterFactories() {
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return Stream.of(
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Arguments.of(Named.of("Default JavaRegexInterpreterFactory",
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new RegexInterpreterFactory.JavaRegexInterpreterFactory())),
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Arguments.of(Named.of("HSRegexInterpreterFactory",
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new HSRegexInterpreterFactory()))
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);
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}
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@ParameterizedTest
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@MethodSource("provideRegexInterpreterFactories")
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public void simpleTest(RegexInterpreterFactory factory) {
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Regex regex = factory.instantiate("Alice|Bob");
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assertTrue(regex.matches("Alice"));
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assertTrue(regex.matches("Bob"));
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assertFalse(regex.matches("Charlie"));
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}
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@ParameterizedTest
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@MethodSource("provideRegexInterpreterFactories")
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public void testEmailRegexMatchesDomain(RegexInterpreterFactory factory) {
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Regex regex = factory.instantiate("<[^>]+[@.]pgpainless\\.org>$");
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assertTrue(regex.matches("Alice <alice@pgpainless.org>"));
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assertTrue(regex.matches("Bob <bob@pgpainless.org>"));
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assertFalse(regex.matches("Alice <alice@example.com>"), "wrong domain");
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assertFalse(regex.matches("Bob <bob@example.com>"), "wrong domain");
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}
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@ParameterizedTest
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@MethodSource("provideRegexInterpreterFactories")
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public void testEmailRegexMatchesOnlyWrappedAddresses(RegexInterpreterFactory factory) {
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Regex regex = factory.instantiate("<[^>]+[@.]pgpainless\\.org>$");
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assertTrue(regex.matches("<alice@pgpainless.org>"));
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assertFalse(regex.matches("alice@pgpainless.org"), "only match mails in <>");
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}
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@ParameterizedTest
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@MethodSource("provideRegexInterpreterFactories")
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public void testCaseSensitivity(RegexInterpreterFactory factory) {
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Regex regex = factory.instantiate("<[^>]+[@.]pgpainless\\.org>$");
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assertFalse(regex.matches("Alice <alice@PGPAINLESS.ORG>"));
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}
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@ParameterizedTest
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@MethodSource("provideRegexInterpreterFactories")
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public void testWildCard(RegexInterpreterFactory factory) {
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Regex regex = factory.instantiate(".*");
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assertTrue(regex.matches(""));
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assertTrue(regex.matches("Alice"));
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assertTrue(regex.matches("<alice@pgpainless.org>"));
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}
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@ParameterizedTest
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@MethodSource("provideRegexInterpreterFactories")
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public void testExclusion(RegexInterpreterFactory factory) {
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// Test [^>] matches all but '>'
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Regex regex = factory.instantiate("<[^>]+[@.]pgpainless\\.org>$");
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assertFalse(regex.matches("<alice>appendix@pgpainless.org>"));
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assertFalse(regex.matches("<>alice@pgpainless.org>"));
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}
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@ParameterizedTest
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@MethodSource("provideRegexInterpreterFactories")
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public void testOnlyMatchAtTheEnd(RegexInterpreterFactory factory) {
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Regex regex = factory.instantiate("<[^>]+[@.]pgpainless\\.org>$");
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assertFalse(regex.matches("Alice <alice@pgpainless.org><bob@example.org>"));
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}
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@ParameterizedTest
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@MethodSource("provideRegexInterpreterFactories")
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public void testRanges(RegexInterpreterFactory factory) {
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Regex regex = factory.instantiate("<[^>]+[0-9][@.]pgpainless\\.org>$");
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for (int i = 0; i < 10; i++) {
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String mail = "<user" + i + "@pgpainless.org>";
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assertTrue(regex.matches(mail));
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}
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assertFalse(regex.matches("<user@pgpainless.org>"));
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}
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@ParameterizedTest
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@MethodSource("provideRegexInterpreterFactories")
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public void testExactMailMatch(RegexInterpreterFactory factory) {
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Regex exactMail = factory.instantiate("<exact@pgpainless\\.org>$");
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assertTrue(exactMail.matches("<exact@pgpainless.org>"));
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assertTrue(exactMail.matches("Exact Match <exact@pgpainless.org>"));
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assertFalse(exactMail.matches("<roughly-exact@pgpainless.org>"));
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}
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@ParameterizedTest
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@MethodSource("provideRegexInterpreterFactories")
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public void testSetInstance(RegexInterpreterFactory factory) {
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RegexInterpreterFactory before = RegexInterpreterFactory.getInstance();
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RegexInterpreterFactory.setInstance(factory);
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Regex regex = RegexInterpreterFactory.create("<[^>]+[@.]pgpainless\\.org>$");
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assertTrue(regex.matches(UserId.nameAndEmail("Alice", "alice@pgpainless.org")));
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RegexInterpreterFactory.setInstance(before);
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}
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}
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@ -6,5 +6,6 @@ rootProject.name = 'PGPainless'
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include 'pgpainless-core',
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'pgpainless-sop',
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'pgpainless-cli'
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'pgpainless-cli',
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'hsregex'
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