com.google.gerrit.server.permissions.ChangeControl Maven / Gradle / Ivy
// Copyright (C) 2009 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.permissions;
import static com.google.gerrit.server.permissions.AbstractLabelPermission.ForUser.ON_BEHALF_OF;
import static com.google.gerrit.server.permissions.DefaultPermissionMappings.labelPermissionName;
import com.google.common.collect.Maps;
import com.google.common.collect.Sets;
import com.google.gerrit.entities.Account;
import com.google.gerrit.entities.Change;
import com.google.gerrit.entities.Permission;
import com.google.gerrit.entities.PermissionRange;
import com.google.gerrit.exceptions.StorageException;
import com.google.gerrit.extensions.conditions.BooleanCondition;
import com.google.gerrit.extensions.restapi.AuthException;
import com.google.gerrit.server.CurrentUser;
import com.google.gerrit.server.permissions.PermissionBackend.ForChange;
import com.google.gerrit.server.query.change.ChangeData;
import java.util.Collection;
import java.util.EnumSet;
import java.util.Map;
import java.util.Set;
/** Access control management for a user accessing a single change. */
class ChangeControl {
private final RefControl refControl;
private final ChangeData changeData;
ChangeControl(RefControl refControl, ChangeData changeData) {
this.refControl = refControl;
this.changeData = changeData;
}
ForChange asForChange() {
return new ForChangeImpl();
}
private CurrentUser getUser() {
return refControl.getUser();
}
private ProjectControl getProjectControl() {
return refControl.getProjectControl();
}
private Change getChange() {
return changeData.change();
}
/** Can this user see this change? */
boolean isVisible() {
if (getChange().isPrivate() && !isPrivateVisible(changeData)) {
return false;
}
// Does the user have READ permission on the destination?
return refControl.asForRef().testOrFalse(RefPermission.READ);
}
/** Can this user abandon this change? */
private boolean canAbandon() {
return isOwner() // owner (aka creator) of the change can abandon
|| refControl.isOwner() // branch owner can abandon
|| getProjectControl().isOwner() // project owner can abandon
|| refControl.canPerform(Permission.ABANDON) // user can abandon a specific ref
|| getProjectControl().isAdmin();
}
/** Can this user rebase this change? */
private boolean canRebase() {
return (isOwner() || refControl.canSubmit(isOwner()) || refControl.canRebase())
&& refControl.asForRef().testOrFalse(RefPermission.CREATE_CHANGE);
}
/**
* Can this user rebase this change on behalf of the uploader?
*
* This only checks the permissions of the rebaser (aka the impersonating user).
*
*
In addition rebase on behalf of the uploader requires the uploader (aka the impersonated
* user) to have permissions to create the new patch set. These permissions need to be checked
* separately.
*/
private boolean canRebaseOnBehalfOfUploader() {
return (isOwner() || refControl.canSubmit(isOwner()) || refControl.canRebase());
}
/** Can this user restore this change? */
private boolean canRestore() {
// Anyone who can abandon the change can restore it, as long as they can create changes.
return canAbandon() && refControl.asForRef().testOrFalse(RefPermission.CREATE_CHANGE);
}
/** Can this user revert this change? */
private boolean canRevert() {
return refControl.canRevert() && refControl.asForRef().testOrFalse(RefPermission.CREATE_CHANGE);
}
/** The range of permitted values associated with a label permission. */
private PermissionRange getRange(String permission) {
return refControl.getRange(permission, isOwner());
}
/** Can this user add a patch set to this change? */
private boolean canAddPatchSet() {
if (!refControl.asForRef().testOrFalse(RefPermission.CREATE_CHANGE)) {
return false;
}
if (isOwner()) {
return true;
}
return refControl.canAddPatchSet();
}
/** Is this user the owner of the change? */
private boolean isOwner() {
if (getUser().isIdentifiedUser()) {
Account.Id id = getUser().asIdentifiedUser().getAccountId();
return id.equals(getChange().getOwner());
}
return false;
}
/** Is this user a reviewer for the change? */
private boolean isReviewer(ChangeData cd) {
if (getUser().isIdentifiedUser()) {
Collection results = cd.reviewers().all();
return results.contains(getUser().getAccountId());
}
return false;
}
/** Can this user edit the topic name? */
private boolean canEditTopicName() {
if (getChange().isNew()) {
return isOwner() // owner (aka creator) of the change can edit topic
|| refControl.isOwner() // branch owner can edit topic
|| getProjectControl().isOwner() // project owner can edit topic
|| refControl.canPerform(
Permission.EDIT_TOPIC_NAME) // user can edit topic on a specific ref
|| getProjectControl().isAdmin();
}
return refControl.canForceEditTopicName();
}
/** Can this user toggle WorkInProgress state? */
private boolean canToggleWorkInProgressState() {
return isOwner()
|| getProjectControl().isOwner()
|| refControl.canPerform(Permission.TOGGLE_WORK_IN_PROGRESS_STATE)
|| getProjectControl().isAdmin();
}
/** Can this user edit the description? */
private boolean canEditDescription() {
if (getChange().isNew()) {
return isOwner() // owner (aka creator) of the change can edit desc
|| refControl.isOwner() // branch owner can edit desc
|| getProjectControl().isOwner() // project owner can edit desc
|| getProjectControl().isAdmin();
}
return false;
}
/** Can this user edit the hashtag name? */
private boolean canEditHashtags() {
return isOwner() // owner (aka creator) of the change can edit hashtags
|| refControl.isOwner() // branch owner can edit hashtags
|| getProjectControl().isOwner() // project owner can edit hashtags
|| refControl.canPerform(
Permission.EDIT_HASHTAGS) // user can edit hashtag on a specific ref
|| getProjectControl().isAdmin();
}
private boolean isPrivateVisible(ChangeData cd) {
return isOwner()
|| isReviewer(cd)
|| refControl.canPerform(Permission.VIEW_PRIVATE_CHANGES)
|| getUser().isInternalUser();
}
private class ForChangeImpl extends ForChange {
private Map labels;
private String resourcePath;
private ForChangeImpl() {}
@Override
public String resourcePath() {
if (resourcePath == null) {
resourcePath =
String.format(
"/projects/%s/+changes/%s",
getProjectControl().getProjectState().getName(), changeData.getId().get());
}
return resourcePath;
}
@Override
public void check(ChangePermissionOrLabel perm)
throws AuthException, PermissionBackendException {
if (!can(perm)) {
throw new AuthException(
perm.describeForException()
+ " not permitted"
+ perm.hintForException().map(hint -> " (" + hint + ")").orElse(""));
}
}
@Override
public Set test(Collection permSet)
throws PermissionBackendException {
Set ok = newSet(permSet);
for (T perm : permSet) {
if (can(perm)) {
ok.add(perm);
}
}
return ok;
}
@Override
public BooleanCondition testCond(ChangePermissionOrLabel perm) {
return new PermissionBackendCondition.ForChange(this, perm, getUser());
}
private boolean can(ChangePermissionOrLabel perm) throws PermissionBackendException {
if (perm instanceof ChangePermission) {
return can((ChangePermission) perm);
} else if (perm instanceof AbstractLabelPermission) {
return can((AbstractLabelPermission) perm);
} else if (perm instanceof AbstractLabelPermission.WithValue) {
return can((AbstractLabelPermission.WithValue) perm);
}
throw new PermissionBackendException(perm + " unsupported");
}
private boolean can(ChangePermission perm) throws PermissionBackendException {
try {
switch (perm) {
case READ:
return isVisible();
case ABANDON:
return canAbandon();
case DELETE:
return getProjectControl().isAdmin() || refControl.canDeleteChanges(isOwner());
case ADD_PATCH_SET:
return canAddPatchSet();
case EDIT_DESCRIPTION:
return canEditDescription();
case EDIT_HASHTAGS:
return canEditHashtags();
case EDIT_TOPIC_NAME:
return canEditTopicName();
case REBASE:
return canRebase();
case REBASE_ON_BEHALF_OF_UPLOADER:
return canRebaseOnBehalfOfUploader();
case RESTORE:
return canRestore();
case REVERT:
return canRevert();
case SUBMIT:
return refControl.canSubmit(isOwner());
case TOGGLE_WORK_IN_PROGRESS_STATE:
return canToggleWorkInProgressState();
case REMOVE_REVIEWER:
case SUBMIT_AS:
return refControl.canPerform(changePermissionName(perm));
}
} catch (StorageException e) {
throw new PermissionBackendException("unavailable", e);
}
throw new PermissionBackendException(perm + " unsupported");
}
private boolean can(AbstractLabelPermission perm) {
return !label(labelPermissionName(perm)).isEmpty();
}
private boolean can(AbstractLabelPermission.WithValue perm) {
PermissionRange r = label(labelPermissionName(perm));
if (perm.forUser() == ON_BEHALF_OF && r.isEmpty()) {
return false;
}
return r.contains(perm.value());
}
private PermissionRange label(String permission) {
if (labels == null) {
labels = Maps.newHashMapWithExpectedSize(4);
}
PermissionRange r = labels.get(permission);
if (r == null) {
r = getRange(permission);
labels.put(permission, r);
}
return r;
}
}
private static Set newSet(Collection permSet) {
if (permSet instanceof EnumSet) {
@SuppressWarnings({"unchecked", "rawtypes"})
Set s = ((EnumSet) permSet).clone();
s.clear();
return s;
}
return Sets.newHashSetWithExpectedSize(permSet.size());
}
private static String changePermissionName(ChangePermission changePermission) {
// Within this class, it's programmer error to call this method on a
// ChangePermission that isn't associated with a permission name.
return DefaultPermissionMappings.changePermissionName(changePermission)
.orElseThrow(() -> new IllegalStateException("no name for " + changePermission));
}
}