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// Copyright (C) 2017 The Android Open Source Project
//
// 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.
package com.google.gerrit.server.project;
import static com.google.common.base.Preconditions.checkArgument;
import static java.util.Objects.requireNonNull;
import com.google.gerrit.entities.AccountGroup;
import com.google.gerrit.entities.AccountGroup.UUID;
import com.google.gerrit.entities.BooleanProjectConfig;
import com.google.gerrit.entities.ContributorAgreement;
import com.google.gerrit.entities.PermissionRule;
import com.google.gerrit.entities.PermissionRule.Action;
import com.google.gerrit.entities.Project;
import com.google.gerrit.extensions.registration.DynamicItem;
import com.google.gerrit.extensions.restapi.AuthException;
import com.google.gerrit.metrics.Counter0;
import com.google.gerrit.metrics.Description;
import com.google.gerrit.metrics.MetricMaker;
import com.google.gerrit.server.CurrentUser;
import com.google.gerrit.server.IdentifiedUser;
import com.google.gerrit.server.config.UrlFormatter;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;
@Singleton
public class ContributorAgreementsChecker {
private final DynamicItem<UrlFormatter> urlFormatter;
private final ProjectCache projectCache;
private final Metrics metrics;
@Singleton
protected static class Metrics {
final Counter0 claCheckCount;
@Inject
Metrics(MetricMaker metricMaker) {
claCheckCount =
metricMaker.newCounter(
"license/cla_check_count",
new Description("Total number of CLA check requests").setRate().setUnit("requests"));
}
}
@Inject
ContributorAgreementsChecker(
DynamicItem<UrlFormatter> urlFormatter, ProjectCache projectCache, Metrics metrics) {
this.urlFormatter = urlFormatter;
this.projectCache = projectCache;
this.metrics = metrics;
}
/**
* Checks if the user has signed a contributor agreement for the project.
*
* @throws AuthException if the user has not signed a contributor agreement for the project
* @throws IOException if project states could not be loaded
*/
public void check(Project.NameKey project, CurrentUser user) throws IOException, AuthException {
metrics.claCheckCount.increment();
ProjectState projectState =
projectCache.get(project).orElseThrow(() -> new IOException("Can't load " + project));
if (!projectState.is(BooleanProjectConfig.USE_CONTRIBUTOR_AGREEMENTS)) {
return;
}
if (!user.isIdentifiedUser()) {
throw new AuthException("Must be logged in to verify Contributor Agreement");
}
IdentifiedUser iUser = user.asIdentifiedUser();
Collection<ContributorAgreement> contributorAgreements =
projectCache.getAllProjects().getConfig().getContributorAgreements().values();
List<UUID> okGroupIds = new ArrayList<>();
for (ContributorAgreement ca : contributorAgreements) {
List<AccountGroup.UUID> groupIds;
groupIds = okGroupIds;
// matchProjects defaults to match all projects when missing.
List<String> matchProjectsRegexes = ca.getMatchProjectsRegexes();
if (!matchProjectsRegexes.isEmpty()
&& !projectMatchesAnyPattern(project.get(), matchProjectsRegexes)) {
// Doesn't match, isn't checked.
continue;
}
// excludeProjects defaults to exclude no projects when missing.
List<String> excludeProjectsRegexes = ca.getExcludeProjectsRegexes();
if (!excludeProjectsRegexes.isEmpty()
&& projectMatchesAnyPattern(project.get(), excludeProjectsRegexes)) {
// Matches, isn't checked.
continue;
}
for (PermissionRule rule : ca.getAccepted()) {
if ((rule.getAction() == Action.ALLOW)
&& (rule.getGroup() != null)
&& (rule.getGroup().getUUID() != null)) {
groupIds.add(AccountGroup.uuid(rule.getGroup().getUUID().get()));
}
}
}
if (!okGroupIds.isEmpty() && !iUser.getEffectiveGroups().containsAnyOf(okGroupIds)) {
final StringBuilder msg = new StringBuilder();
msg.append("No Contributor Agreement on file for user ")
.append(iUser.getNameEmail())
.append(" (id=")
.append(iUser.getAccountId())
.append(")");
msg.append(urlFormatter.get().getSettingsUrl("Agreements").orElse(""));
throw new AuthException(msg.toString());
}
}
private boolean projectMatchesAnyPattern(String projectName, List<String> regexes) {
requireNonNull(regexes);
checkArgument(!regexes.isEmpty());
for (String patternString : regexes) {
Pattern pattern;
try {
pattern = Pattern.compile(patternString);
} catch (PatternSyntaxException e) {
// Should never happen: Regular expressions validated when reading project.config.
throw new IllegalStateException(
"Invalid matchProjects or excludeProjects clause in project.config", e);
}
if (pattern.matcher(projectName).find()) {
return true;
}
}
return false;
}
}