// Copyright (C) 2012 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.git.validators;
import static com.google.gerrit.reviewdb.client.Change.CHANGE_ID_PATTERN;
import static com.google.gerrit.reviewdb.client.RefNames.REFS_CONFIG;
import static com.google.gerrit.server.git.ReceiveCommits.NEW_PATCHSET;
import static java.util.stream.Collectors.toList;
import com.google.common.base.CharMatcher;
import com.google.common.collect.ImmutableList;
import com.google.gerrit.common.FooterConstants;
import com.google.gerrit.common.Nullable;
import com.google.gerrit.common.PageLinks;
import com.google.gerrit.extensions.api.config.ConsistencyCheckInfo.ConsistencyProblemInfo;
import com.google.gerrit.extensions.registration.DynamicSet;
import com.google.gerrit.reviewdb.client.Account;
import com.google.gerrit.reviewdb.client.RefNames;
import com.google.gerrit.server.GerritPersonIdent;
import com.google.gerrit.server.IdentifiedUser;
import com.google.gerrit.server.account.WatchConfig;
import com.google.gerrit.server.account.externalids.ExternalIdsConsistencyChecker;
import com.google.gerrit.server.config.AllUsersName;
import com.google.gerrit.server.config.CanonicalWebUrl;
import com.google.gerrit.server.config.GerritServerConfig;
import com.google.gerrit.server.events.CommitReceivedEvent;
import com.google.gerrit.server.git.BanCommit;
import com.google.gerrit.server.git.ProjectConfig;
import com.google.gerrit.server.git.ValidationError;
import com.google.gerrit.server.project.ProjectControl;
import com.google.gerrit.server.project.RefControl;
import com.google.gerrit.server.ssh.SshInfo;
import com.google.gerrit.server.util.MagicBranch;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import com.jcraft.jsch.HostKey;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.regex.Pattern;
import org.eclipse.jgit.errors.ConfigInvalidException;
import org.eclipse.jgit.lib.Config;
import org.eclipse.jgit.lib.PersonIdent;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.notes.NoteMap;
import org.eclipse.jgit.revwalk.FooterKey;
import org.eclipse.jgit.revwalk.FooterLine;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevWalk;
import org.eclipse.jgit.util.SystemReader;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class CommitValidators {
private static final Logger log = LoggerFactory.getLogger(CommitValidators.class);
@Singleton
public static class Factory {
private final PersonIdent gerritIdent;
private final String canonicalWebUrl;
private final DynamicSet<CommitValidationListener> pluginValidators;
private final AllUsersName allUsers;
private final ExternalIdsConsistencyChecker externalIdsConsistencyChecker;
private final String installCommitMsgHookCommand;
@Inject
Factory(
@GerritPersonIdent PersonIdent gerritIdent,
@CanonicalWebUrl @Nullable String canonicalWebUrl,
@GerritServerConfig Config cfg,
DynamicSet<CommitValidationListener> pluginValidators,
AllUsersName allUsers,
ExternalIdsConsistencyChecker externalIdsConsistencyChecker) {
this.gerritIdent = gerritIdent;
this.canonicalWebUrl = canonicalWebUrl;
this.pluginValidators = pluginValidators;
this.allUsers = allUsers;
this.externalIdsConsistencyChecker = externalIdsConsistencyChecker;
this.installCommitMsgHookCommand =
cfg != null ? cfg.getString("gerrit", null, "installCommitMsgHookCommand") : null;
}
public CommitValidators forReceiveCommits(
RefControl refControl, SshInfo sshInfo, Repository repo, RevWalk rw) throws IOException {
NoteMap rejectCommits = BanCommit.loadRejectCommitsMap(repo, rw);
return new CommitValidators(
ImmutableList.of(
new UploadMergesPermissionValidator(refControl),
new AmendedGerritMergeCommitValidationListener(refControl, gerritIdent),
new AuthorUploaderValidator(refControl, canonicalWebUrl),
new CommitterUploaderValidator(refControl, canonicalWebUrl),
new SignedOffByValidator(refControl),
new ChangeIdValidator(
refControl, canonicalWebUrl, installCommitMsgHookCommand, sshInfo),
new ConfigValidator(refControl, rw, allUsers),
new BannedCommitsValidator(rejectCommits),
new PluginCommitValidationListener(pluginValidators),
new ExternalIdUpdateListener(allUsers, externalIdsConsistencyChecker)));
}
public CommitValidators forGerritCommits(RefControl refControl, SshInfo sshInfo, RevWalk rw) {
return new CommitValidators(
ImmutableList.of(
new UploadMergesPermissionValidator(refControl),
new AmendedGerritMergeCommitValidationListener(refControl, gerritIdent),
new AuthorUploaderValidator(refControl, canonicalWebUrl),
new SignedOffByValidator(refControl),
new ChangeIdValidator(
refControl, canonicalWebUrl, installCommitMsgHookCommand, sshInfo),
new ConfigValidator(refControl, rw, allUsers),
new PluginCommitValidationListener(pluginValidators),
new ExternalIdUpdateListener(allUsers, externalIdsConsistencyChecker)));
}
public CommitValidators forMergedCommits(RefControl refControl) {
// Generally only include validators that are based on permissions of the
// user creating a change for a merged commit; generally exclude
// validators that would require amending the change in order to correct.
//
// Examples:
// - Change-Id and Signed-off-by can't be added to an already-merged
// commit.
// - If the commit is banned, we can't ban it here. In fact, creating a
// review of a previously merged and recently-banned commit is a use
// case for post-commit code review: so reviewers have a place to
// discuss what to do about it.
// - Plugin validators may do things like require certain commit message
// formats, so we play it safe and exclude them.
return new CommitValidators(
ImmutableList.of(
new UploadMergesPermissionValidator(refControl),
new AuthorUploaderValidator(refControl, canonicalWebUrl),
new CommitterUploaderValidator(refControl, canonicalWebUrl)));
}
}
private final List<CommitValidationListener> validators;
CommitValidators(List<CommitValidationListener> validators) {
this.validators = validators;
}
public List<CommitValidationMessage> validate(CommitReceivedEvent receiveEvent)
throws CommitValidationException {
List<CommitValidationMessage> messages = new ArrayList<>();
try {
for (CommitValidationListener commitValidator : validators) {
messages.addAll(commitValidator.onCommitReceived(receiveEvent));
}
} catch (CommitValidationException e) {
// Keep the old messages (and their order) in case of an exception
messages.addAll(e.getMessages());
throw new CommitValidationException(e.getMessage(), messages);
}
return messages;
}
public static class ChangeIdValidator implements CommitValidationListener {
private static final int SHA1_LENGTH = 7;
private static final String CHANGE_ID_PREFIX = FooterConstants.CHANGE_ID.getName() + ":";
private static final String MISSING_CHANGE_ID_MSG =
"[%s] missing " + FooterConstants.CHANGE_ID.getName() + " in commit message footer";
private static final String MISSING_SUBJECT_MSG =
"[%s] missing subject; "
+ FooterConstants.CHANGE_ID.getName()
+ " must be in commit message footer";
private static final String MULTIPLE_CHANGE_ID_MSG =
"[%s] multiple " + FooterConstants.CHANGE_ID.getName() + " lines in commit message footer";
private static final String INVALID_CHANGE_ID_MSG =
"[%s] invalid "
+ FooterConstants.CHANGE_ID.getName()
+ " line format in commit message footer";
private static final Pattern CHANGE_ID = Pattern.compile(CHANGE_ID_PATTERN);
private final ProjectControl projectControl;
private final String canonicalWebUrl;
private final String installCommitMsgHookCommand;
private final SshInfo sshInfo;
private final IdentifiedUser user;
public ChangeIdValidator(
RefControl refControl,
String canonicalWebUrl,
String installCommitMsgHookCommand,
SshInfo sshInfo) {
this.projectControl = refControl.getProjectControl();
this.canonicalWebUrl = canonicalWebUrl;
this.installCommitMsgHookCommand = installCommitMsgHookCommand;
this.sshInfo = sshInfo;
this.user = projectControl.getUser().asIdentifiedUser();
}
@Override
public List<CommitValidationMessage> onCommitReceived(CommitReceivedEvent receiveEvent)
throws CommitValidationException {
if (!shouldValidateChangeId(receiveEvent)) {
return Collections.emptyList();
}
RevCommit commit = receiveEvent.commit;
List<CommitValidationMessage> messages = new ArrayList<>();
List<String> idList = commit.getFooterLines(FooterConstants.CHANGE_ID);
String sha1 = commit.abbreviate(SHA1_LENGTH).name();
if (idList.isEmpty()) {
if (projectControl.getProjectState().isRequireChangeID()) {
String shortMsg = commit.getShortMessage();
if (shortMsg.startsWith(CHANGE_ID_PREFIX)
&& CHANGE_ID
.matcher(shortMsg.substring(CHANGE_ID_PREFIX.length()).trim())
.matches()) {
String errMsg = String.format(MISSING_SUBJECT_MSG, sha1);
throw new CommitValidationException(errMsg);
}
String errMsg = String.format(MISSING_CHANGE_ID_MSG, sha1);
messages.add(getMissingChangeIdErrorMsg(errMsg, commit));
throw new CommitValidationException(errMsg, messages);
}
} else if (idList.size() > 1) {
String errMsg = String.format(MULTIPLE_CHANGE_ID_MSG, sha1);
throw new CommitValidationException(errMsg, messages);
} else {
String v = idList.get(idList.size() - 1).trim();
// Reject Change-Ids with wrong format and invalid placeholder ID from
// Egit (I0000000000000000000000000000000000000000).
if (!CHANGE_ID.matcher(v).matches() || v.matches("^I00*$")) {
String errMsg = String.format(INVALID_CHANGE_ID_MSG, sha1);
messages.add(getMissingChangeIdErrorMsg(errMsg, receiveEvent.commit));
throw new CommitValidationException(errMsg, messages);
}
}
return Collections.emptyList();
}
private static boolean shouldValidateChangeId(CommitReceivedEvent event) {
return MagicBranch.isMagicBranch(event.command.getRefName())
|| NEW_PATCHSET.matcher(event.command.getRefName()).matches();
}
private CommitValidationMessage getMissingChangeIdErrorMsg(
final String errMsg, final RevCommit c) {
StringBuilder sb = new StringBuilder();
sb.append("ERROR: ").append(errMsg);
if (c.getFullMessage().indexOf(CHANGE_ID_PREFIX) >= 0) {
String[] lines = c.getFullMessage().trim().split("\n");
String lastLine = lines.length > 0 ? lines[lines.length - 1] : "";
if (lastLine.indexOf(CHANGE_ID_PREFIX) == -1) {
sb.append('\n');
sb.append('\n');
sb.append("Hint: A potential ");
sb.append(FooterConstants.CHANGE_ID.getName());
sb.append("Change-Id was found, but it was not in the ");
sb.append("footer (last paragraph) of the commit message.");
}
}
sb.append('\n');
sb.append('\n');
sb.append("Hint: To automatically insert ");
sb.append(FooterConstants.CHANGE_ID.getName());
sb.append(", install the hook:\n");
sb.append(getCommitMessageHookInstallationHint());
sb.append('\n');
sb.append("And then amend the commit:\n");
sb.append(" git commit --amend\n");
return new CommitValidationMessage(sb.toString(), false);
}
private String getCommitMessageHookInstallationHint() {
if (installCommitMsgHookCommand != null) {
return installCommitMsgHookCommand;
}
final List<HostKey> hostKeys = sshInfo.getHostKeys();
// If there are no SSH keys, the commit-msg hook must be installed via
// HTTP(S)
if (hostKeys.isEmpty()) {
String p = "${gitdir}/hooks/commit-msg";
return String.format(
" gitdir=$(git rev-parse --git-dir); curl -o %s %s/tools/hooks/commit-msg ; chmod +x %s",
p, getGerritUrl(canonicalWebUrl), p);
}
// SSH keys exist, so the hook can be installed with scp.
String sshHost;
int sshPort;
String host = hostKeys.get(0).getHost();
int c = host.lastIndexOf(':');
if (0 <= c) {
if (host.startsWith("*:")) {
sshHost = getGerritHost(canonicalWebUrl);
} else {
sshHost = host.substring(0, c);
}
sshPort = Integer.parseInt(host.substring(c + 1));
} else {
sshHost = host;
sshPort = 22;
}
return String.format(
" gitdir=$(git rev-parse --git-dir); scp -p -P %d %s@%s:hooks/commit-msg ${gitdir}/hooks/",
sshPort, user.getUserName(), sshHost);
}
}
/** If this is the special project configuration branch, validate the config. */
public static class ConfigValidator implements CommitValidationListener {
private final RefControl refControl;
private final RevWalk rw;
private final AllUsersName allUsers;
public ConfigValidator(RefControl refControl, RevWalk rw, AllUsersName allUsers) {
this.refControl = refControl;
this.rw = rw;
this.allUsers = allUsers;
}
@Override
public List<CommitValidationMessage> onCommitReceived(CommitReceivedEvent receiveEvent)
throws CommitValidationException {
IdentifiedUser currentUser = refControl.getUser().asIdentifiedUser();
if (REFS_CONFIG.equals(refControl.getRefName())) {
List<CommitValidationMessage> messages = new ArrayList<>();
try {
ProjectConfig cfg = new ProjectConfig(receiveEvent.project.getNameKey());
cfg.load(rw, receiveEvent.command.getNewId());
if (!cfg.getValidationErrors().isEmpty()) {
addError("Invalid project configuration:", messages);
for (ValidationError err : cfg.getValidationErrors()) {
addError(" " + err.getMessage(), messages);
}
throw new ConfigInvalidException("invalid project configuration");
}
} catch (ConfigInvalidException | IOException e) {
log.error(
"User "
+ currentUser.getUserName()
+ " tried to push an invalid project configuration "
+ receiveEvent.command.getNewId().name()
+ " for project "
+ receiveEvent.project.getName(),
e);
throw new CommitValidationException("invalid project configuration", messages);
}
}
if (allUsers.equals(refControl.getProjectControl().getProject().getNameKey())
&& RefNames.isRefsUsers(refControl.getRefName())) {
List<CommitValidationMessage> messages = new ArrayList<>();
Account.Id accountId = Account.Id.fromRef(refControl.getRefName());
if (accountId != null) {
try {
WatchConfig wc = new WatchConfig(accountId);
wc.load(rw, receiveEvent.command.getNewId());
if (!wc.getValidationErrors().isEmpty()) {
addError("Invalid project configuration:", messages);
for (ValidationError err : wc.getValidationErrors()) {
addError(" " + err.getMessage(), messages);
}
throw new ConfigInvalidException("invalid watch configuration");
}
} catch (IOException | ConfigInvalidException e) {
log.error(
"User "
+ currentUser.getUserName()
+ " tried to push an invalid watch configuration "
+ receiveEvent.command.getNewId().name()
+ " for account "
+ accountId.get(),
e);
throw new CommitValidationException("invalid watch configuration", messages);
}
}
}
return Collections.emptyList();
}
}
/** Require permission to upload merges. */
public static class UploadMergesPermissionValidator implements CommitValidationListener {
private final RefControl refControl;
public UploadMergesPermissionValidator(RefControl refControl) {
this.refControl = refControl;
}
@Override
public List<CommitValidationMessage> onCommitReceived(CommitReceivedEvent receiveEvent)
throws CommitValidationException {
if (receiveEvent.commit.getParentCount() > 1 && !refControl.canUploadMerges()) {
throw new CommitValidationException("you are not allowed to upload merges");
}
return Collections.emptyList();
}
}
/** Execute commit validation plug-ins */
public static class PluginCommitValidationListener implements CommitValidationListener {
private final DynamicSet<CommitValidationListener> commitValidationListeners;
public PluginCommitValidationListener(
final DynamicSet<CommitValidationListener> commitValidationListeners) {
this.commitValidationListeners = commitValidationListeners;
}
@Override
public List<CommitValidationMessage> onCommitReceived(CommitReceivedEvent receiveEvent)
throws CommitValidationException {
List<CommitValidationMessage> messages = new ArrayList<>();
for (CommitValidationListener validator : commitValidationListeners) {
try {
messages.addAll(validator.onCommitReceived(receiveEvent));
} catch (CommitValidationException e) {
messages.addAll(e.getMessages());
throw new CommitValidationException(e.getMessage(), messages);
}
}
return messages;
}
}
public static class SignedOffByValidator implements CommitValidationListener {
private final RefControl refControl;
public SignedOffByValidator(RefControl refControl) {
this.refControl = refControl;
}
@Override
public List<CommitValidationMessage> onCommitReceived(CommitReceivedEvent receiveEvent)
throws CommitValidationException {
IdentifiedUser currentUser = refControl.getUser().asIdentifiedUser();
final PersonIdent committer = receiveEvent.commit.getCommitterIdent();
final PersonIdent author = receiveEvent.commit.getAuthorIdent();
final ProjectControl projectControl = refControl.getProjectControl();
if (projectControl.getProjectState().isUseSignedOffBy()) {
boolean sboAuthor = false;
boolean sboCommitter = false;
boolean sboMe = false;
for (final FooterLine footer : receiveEvent.commit.getFooterLines()) {
if (footer.matches(FooterKey.SIGNED_OFF_BY)) {
final String e = footer.getEmailAddress();
if (e != null) {
sboAuthor |= author.getEmailAddress().equals(e);
sboCommitter |= committer.getEmailAddress().equals(e);
sboMe |= currentUser.hasEmailAddress(e);
}
}
}
if (!sboAuthor && !sboCommitter && !sboMe && !refControl.canForgeCommitter()) {
throw new CommitValidationException(
"not Signed-off-by author/committer/uploader in commit message footer");
}
}
return Collections.emptyList();
}
}
/** Require that author matches the uploader. */
public static class AuthorUploaderValidator implements CommitValidationListener {
private final RefControl refControl;
private final String canonicalWebUrl;
public AuthorUploaderValidator(RefControl refControl, String canonicalWebUrl) {
this.refControl = refControl;
this.canonicalWebUrl = canonicalWebUrl;
}
@Override
public List<CommitValidationMessage> onCommitReceived(CommitReceivedEvent receiveEvent)
throws CommitValidationException {
IdentifiedUser currentUser = refControl.getUser().asIdentifiedUser();
final PersonIdent author = receiveEvent.commit.getAuthorIdent();
if (!currentUser.hasEmailAddress(author.getEmailAddress()) && !refControl.canForgeAuthor()) {
List<CommitValidationMessage> messages = new ArrayList<>();
messages.add(
getInvalidEmailError(
receiveEvent.commit, "author", author, currentUser, canonicalWebUrl));
throw new CommitValidationException("invalid author", messages);
}
return Collections.emptyList();
}
}
/** Require that committer matches the uploader. */
public static class CommitterUploaderValidator implements CommitValidationListener {
private final RefControl refControl;
private final String canonicalWebUrl;
public CommitterUploaderValidator(RefControl refControl, String canonicalWebUrl) {
this.refControl = refControl;
this.canonicalWebUrl = canonicalWebUrl;
}
@Override
public List<CommitValidationMessage> onCommitReceived(CommitReceivedEvent receiveEvent)
throws CommitValidationException {
IdentifiedUser currentUser = refControl.getUser().asIdentifiedUser();
final PersonIdent committer = receiveEvent.commit.getCommitterIdent();
if (!currentUser.hasEmailAddress(committer.getEmailAddress())
&& !refControl.canForgeCommitter()) {
List<CommitValidationMessage> messages = new ArrayList<>();
messages.add(
getInvalidEmailError(
receiveEvent.commit, "committer", committer, currentUser, canonicalWebUrl));
throw new CommitValidationException("invalid committer", messages);
}
return Collections.emptyList();
}
}
/**
* Don't allow the user to amend a merge created by Gerrit Code Review. This seems to happen all
* too often, due to users not paying any attention to what they are doing.
*/
public static class AmendedGerritMergeCommitValidationListener
implements CommitValidationListener {
private final PersonIdent gerritIdent;
private final RefControl refControl;
public AmendedGerritMergeCommitValidationListener(
final RefControl refControl, final PersonIdent gerritIdent) {
this.refControl = refControl;
this.gerritIdent = gerritIdent;
}
@Override
public List<CommitValidationMessage> onCommitReceived(CommitReceivedEvent receiveEvent)
throws CommitValidationException {
final PersonIdent author = receiveEvent.commit.getAuthorIdent();
if (receiveEvent.commit.getParentCount() > 1
&& author.getName().equals(gerritIdent.getName())
&& author.getEmailAddress().equals(gerritIdent.getEmailAddress())
&& !refControl.canForgeGerritServerIdentity()) {
throw new CommitValidationException("do not amend merges not made by you");
}
return Collections.emptyList();
}
}
/** Reject banned commits. */
public static class BannedCommitsValidator implements CommitValidationListener {
private final NoteMap rejectCommits;
public BannedCommitsValidator(NoteMap rejectCommits) {
this.rejectCommits = rejectCommits;
}
@Override
public List<CommitValidationMessage> onCommitReceived(CommitReceivedEvent receiveEvent)
throws CommitValidationException {
try {
if (rejectCommits.contains(receiveEvent.commit)) {
throw new CommitValidationException(
"contains banned commit " + receiveEvent.commit.getName());
}
return Collections.emptyList();
} catch (IOException e) {
String m = "error checking banned commits";
log.warn(m, e);
throw new CommitValidationException(m, e);
}
}
}
/** Validates updates to refs/meta/external-ids. */
public static class ExternalIdUpdateListener implements CommitValidationListener {
private final AllUsersName allUsers;
private final ExternalIdsConsistencyChecker externalIdsConsistencyChecker;
public ExternalIdUpdateListener(
AllUsersName allUsers, ExternalIdsConsistencyChecker externalIdsConsistencyChecker) {
this.externalIdsConsistencyChecker = externalIdsConsistencyChecker;
this.allUsers = allUsers;
}
@Override
public List<CommitValidationMessage> onCommitReceived(CommitReceivedEvent receiveEvent)
throws CommitValidationException {
if (allUsers.equals(receiveEvent.project.getNameKey())
&& RefNames.REFS_EXTERNAL_IDS.equals(receiveEvent.refName)) {
try {
List<ConsistencyProblemInfo> problems =
externalIdsConsistencyChecker.check(receiveEvent.commit);
List<CommitValidationMessage> msgs =
problems
.stream()
.map(
p ->
new CommitValidationMessage(
p.message, p.status == ConsistencyProblemInfo.Status.ERROR))
.collect(toList());
if (msgs.stream().anyMatch(m -> m.isError())) {
throw new CommitValidationException("invalid external IDs", msgs);
}
return msgs;
} catch (IOException e) {
String m = "error validating external IDs";
log.warn(m, e);
throw new CommitValidationException(m, e);
}
}
return Collections.emptyList();
}
}
private static CommitValidationMessage getInvalidEmailError(
RevCommit c,
String type,
PersonIdent who,
IdentifiedUser currentUser,
String canonicalWebUrl) {
StringBuilder sb = new StringBuilder();
sb.append("\n");
sb.append("ERROR: In commit ").append(c.name()).append("\n");
sb.append("ERROR: ")
.append(type)
.append(" email address ")
.append(who.getEmailAddress())
.append("\n");
sb.append("ERROR: does not match your user account.\n");
sb.append("ERROR:\n");
if (currentUser.getEmailAddresses().isEmpty()) {
sb.append("ERROR: You have not registered any email addresses.\n");
} else {
sb.append("ERROR: The following addresses are currently registered:\n");
for (String address : currentUser.getEmailAddresses()) {
sb.append("ERROR: ").append(address).append("\n");
}
}
sb.append("ERROR:\n");
if (canonicalWebUrl != null) {
sb.append("ERROR: To register an email address, please visit:\n");
sb.append("ERROR: ")
.append(canonicalWebUrl)
.append("#")
.append(PageLinks.SETTINGS_CONTACT)
.append("\n");
}
sb.append("\n");
return new CommitValidationMessage(sb.toString(), false);
}
/**
* Get the Gerrit URL.
*
* @return the canonical URL (with any trailing slash removed) if it is configured, otherwise fall
* back to "http://hostname" where hostname is the value returned by {@link
* #getGerritHost(String)}.
*/
private static String getGerritUrl(String canonicalWebUrl) {
if (canonicalWebUrl != null) {
return CharMatcher.is('/').trimTrailingFrom(canonicalWebUrl);
}
return "http://" + getGerritHost(canonicalWebUrl);
}
/**
* Get the Gerrit hostname.
*
* @return the hostname from the canonical URL if it is configured, otherwise whatever the OS says
* the hostname is.
*/
private static String getGerritHost(String canonicalWebUrl) {
String host;
if (canonicalWebUrl != null) {
try {
host = new URL(canonicalWebUrl).getHost();
} catch (MalformedURLException e) {
host = SystemReader.getInstance().getHostname();
}
} else {
host = SystemReader.getInstance().getHostname();
}
return host;
}
private static void addError(String error, List<CommitValidationMessage> messages) {
messages.add(new CommitValidationMessage(error, true));
}
}