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- /*
- * SonarQube
- * Copyright (C) 2009-2018 SonarSource SA
- * mailto:info AT sonarsource DOT com
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 3 of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
- package org.sonar.api.web;
-
- import java.util.ArrayList;
- import java.util.Arrays;
- import java.util.Collection;
- import java.util.HashSet;
- import java.util.LinkedHashSet;
- import java.util.List;
- import java.util.Set;
- import java.util.function.Predicate;
- import java.util.stream.Collectors;
- import javax.servlet.Filter;
- import org.sonar.api.ExtensionPoint;
- import org.sonar.api.server.ServerSide;
-
- import static com.google.common.base.Preconditions.checkArgument;
- import static java.util.Arrays.asList;
- import static java.util.Collections.unmodifiableList;
- import static org.apache.commons.lang.StringUtils.substringBeforeLast;
-
- /**
- * @since 3.1
- */
- @ServerSide
- @ExtensionPoint
- public abstract class ServletFilter implements Filter {
-
- /**
- * Override to change URL. Default is /*
- */
- public UrlPattern doGetPattern() {
- return UrlPattern.builder().build();
- }
-
- public static final class UrlPattern {
-
- private static final String MATCH_ALL = "/*";
-
- private final List<String> inclusions;
- private final List<String> exclusions;
- private final Predicate<String>[] inclusionPredicates;
- private final Predicate<String>[] exclusionPredicates;
-
- private UrlPattern(Builder builder) {
- this.inclusions = unmodifiableList(new ArrayList<>(builder.inclusions));
- this.exclusions = unmodifiableList(new ArrayList<>(builder.exclusions));
- if (builder.inclusionPredicates.isEmpty()) {
- // because Stream#anyMatch() returns false if stream is empty
- this.inclusionPredicates = new Predicate[] {s -> true};
- } else {
- this.inclusionPredicates = builder.inclusionPredicates.stream().toArray(Predicate[]::new);
- }
- this.exclusionPredicates = builder.exclusionPredicates.stream().toArray(Predicate[]::new);
- }
-
- public boolean matches(String path) {
- return !Arrays.stream(exclusionPredicates).anyMatch(pattern -> pattern.test(path)) &&
- Arrays.stream(inclusionPredicates).anyMatch(pattern -> pattern.test(path));
- }
-
- /**
- * @since 6.0
- */
- public Collection<String> getInclusions() {
- return inclusions;
- }
-
- /**
- * @since 6.0
- */
- public Collection<String> getExclusions() {
- return exclusions;
- }
-
- /**
- * @deprecated replaced in version 6.0 by {@link #getInclusions()} and {@link #getExclusions()}
- * @throws IllegalStateException if at least one exclusion or more than one inclusions are defined
- */
- @Deprecated
- public String getUrl() {
- // Before 6.0, it was only possible to include one url
- if (exclusions.isEmpty() && inclusions.size() == 1) {
- return inclusions.get(0);
- }
- throw new IllegalStateException("this method is deprecated and should not be used anymore");
- }
-
- public String label() {
- return "UrlPattern{" +
- "inclusions=[" + convertPatternsToString(inclusions) + "]" +
- ", exclusions=[" + convertPatternsToString(exclusions) + "]" +
- '}';
- }
-
- private static String convertPatternsToString(List<String> input) {
- StringBuilder output = new StringBuilder();
- if (input.isEmpty()) {
- return "";
- }
- if (input.size() == 1) {
- return output.append(input.get(0)).toString();
- }
- return output.append(input.get(0)).append(", ...").toString();
- }
-
- /**
- * Defines only a single inclusion pattern. This is a shortcut for {@code builder().includes(inclusionPattern).build()}.
- */
- public static UrlPattern create(String inclusionPattern) {
- return builder().includes(inclusionPattern).build();
- }
-
- /**
- * @since 6.0
- */
- public static Builder builder() {
- return new Builder();
- }
-
- /**
- * @since 6.0
- */
- public static class Builder {
- private static final String WILDCARD_CHAR = "*";
- private static final Collection<String> STATIC_RESOURCES = unmodifiableList(asList(
- "*.css", "*.css.map", "*.ico", "*.png", "*.jpg", "*.jpeg", "*.gif", "*.svg", "*.js", "*.js.map", "*.pdf", "/json/*",
- "/static/*", "/robots.txt", "/favicon.ico", "/apple-touch-icon*", "/mstile*"));
-
- private final Set<String> inclusions = new LinkedHashSet<>();
- private final Set<String> exclusions = new LinkedHashSet<>();
- private final Set<Predicate<String>> inclusionPredicates = new HashSet<>();
- private final Set<Predicate<String>> exclusionPredicates = new HashSet<>();
-
- private Builder() {
- }
-
- public static Collection<String> staticResourcePatterns() {
- return STATIC_RESOURCES;
- }
-
- /**
- * Add inclusion patterns. Supported formats are:
- * <ul>
- * <li>path prefixed by / and ended by * or /*, for example "/api/foo/*", to match all paths "/api/foo" and "api/api/foo/something/else"</li>
- * <li>path prefixed by / and ended by .*, for example "/api/foo.*", to match exact path "/api/foo" with any suffix like "/api/foo.protobuf"</li>
- * <li>path prefixed by *, for example "*\/foo", to match all paths "/api/foo" and "something/else/foo"</li>
- * <li>path with leading slash and no wildcard, for example "/api/foo", to match exact path "/api/foo"</li>
- * </ul>
- */
- public Builder includes(String... includePatterns) {
- return includes(asList(includePatterns));
- }
-
- /**
- * Add exclusion patterns. See format described in {@link #includes(String...)}
- */
- public Builder includes(Collection<String> includePatterns) {
- this.inclusions.addAll(includePatterns);
- this.inclusionPredicates.addAll(includePatterns.stream()
- .filter(pattern -> !MATCH_ALL.equals(pattern))
- .map(Builder::compile)
- .collect(Collectors.toList()));
- return this;
- }
-
- public Builder excludes(String... excludePatterns) {
- return excludes(asList(excludePatterns));
- }
-
- public Builder excludes(Collection<String> excludePatterns) {
- this.exclusions.addAll(excludePatterns);
- this.exclusionPredicates.addAll(excludePatterns.stream()
- .map(Builder::compile)
- .collect(Collectors.toList()));
- return this;
- }
-
- public UrlPattern build() {
- return new UrlPattern(this);
- }
-
- private static Predicate<String> compile(String pattern) {
- int countStars = pattern.length() - pattern.replace(WILDCARD_CHAR, "").length();
- if (countStars == 0) {
- checkArgument(pattern.startsWith("/"), "URL pattern must start with slash '/': %s", pattern);
- return url -> url.equals(pattern);
- }
- checkArgument(countStars == 1, "URL pattern accepts only zero or one wildcard character '*': %s", pattern);
- if (pattern.charAt(0) == '/') {
- checkArgument(pattern.endsWith(WILDCARD_CHAR), "URL pattern must end with wildcard character '*': %s", pattern);
- if (pattern.endsWith("/*")) {
- String path = pattern.substring(0, pattern.length() - "/*".length());
- return url -> url.startsWith(path);
- }
- if (pattern.endsWith(".*")) {
- String path = pattern.substring(0, pattern.length() - ".*".length());
- return url -> substringBeforeLast(url, ".").equals(path);
- }
- String path = pattern.substring(0, pattern.length() - "*".length());
- return url -> url.startsWith(path);
- }
- checkArgument(pattern.startsWith(WILDCARD_CHAR), "URL pattern must start with wildcard character '*': %s", pattern);
- // remove the leading *
- String path = pattern.substring(1);
- return url -> url.endsWith(path);
- }
- }
- }
- }
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