// Copyright (C) 2011 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.common.data;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
/** Server wide capabilities. Represented as {@link Permission} objects. */
public class GlobalCapability {
/** Ability to access the database (with gsql). */
public static final String ACCESS_DATABASE = "accessDatabase";
/**
* Denotes the server's administrators.
*
* <p>This is similar to UNIX root, or Windows SYSTEM account. Any user that has this capability
* can perform almost any other action, or can grant themselves the power to perform any other
* action on the site. Most of the other capabilities and permissions fall-back to the predicate
* "OR user has capability ADMINISTRATE_SERVER".
*/
public static final String ADMINISTRATE_SERVER = "administrateServer";
/** Maximum number of changes that may be pushed in a batch. */
public static final String BATCH_CHANGES_LIMIT = "batchChangesLimit";
/**
* Default maximum number of changes that may be pushed in a batch, 0 means no limit. This is just
* used as a suggestion for prepopulating the field in the access UI.
*/
public static final int DEFAULT_MAX_BATCH_CHANGES_LIMIT = 0;
/** Can create any account on the server. */
public static final String CREATE_ACCOUNT = "createAccount";
/** Can create any group on the server. */
public static final String CREATE_GROUP = "createGroup";
/** Can create any project on the server. */
public static final String CREATE_PROJECT = "createProject";
/**
* Denotes who may email change reviewers and watchers.
*
* <p>This can be used to deny build bots from emailing reviewers and people who watch the change.
* Instead, only the authors of the change and those who starred it will be emailed. The allow
* rules are evaluated before deny rules, however the default is to allow emailing, if no explicit
* rule is matched.
*/
public static final String EMAIL_REVIEWERS = "emailReviewers";
/** Can flush any cache except the active web_sessions cache. */
public static final String FLUSH_CACHES = "flushCaches";
/** Can terminate any task using the kill command. */
public static final String KILL_TASK = "killTask";
/**
* Can perform limited server maintenance.
*
* <p>Includes tasks such as reindexing changes and flushing caches that may need to be performed
* regularly. Does <strong>not</strong> grant arbitrary read/write/ACL management permissions as
* does {@link #ADMINISTRATE_SERVER}.
*/
public static final String MAINTAIN_SERVER = "maintainServer";
/** Can modify any account on the server. */
public static final String MODIFY_ACCOUNT = "modifyAccount";
/** Queue a user can access to submit their tasks to. */
public static final String PRIORITY = "priority";
/** Maximum result limit per executed query. */
public static final String QUERY_LIMIT = "queryLimit";
/** Default result limit per executed query. */
public static final int DEFAULT_MAX_QUERY_LIMIT = 500;
/** Ability to impersonate another user. */
public static final String RUN_AS = "runAs";
/** Can run the Git garbage collection. */
public static final String RUN_GC = "runGC";
/** Can perform streaming of Gerrit events. */
public static final String STREAM_EVENTS = "streamEvents";
/** Can view all accounts, regardless of {@code accounts.visibility}. */
public static final String VIEW_ALL_ACCOUNTS = "viewAllAccounts";
/** Can view the server's current cache states. */
public static final String VIEW_CACHES = "viewCaches";
/** Can view open connections to the server's SSH port. */
public static final String VIEW_CONNECTIONS = "viewConnections";
/** Can view all installed plugins. */
public static final String VIEW_PLUGINS = "viewPlugins";
/** Can view all pending tasks in the queue (not just the filtered set). */
public static final String VIEW_QUEUE = "viewQueue";
private static final List<String> NAMES_ALL;
private static final List<String> NAMES_LC;
private static final String[] RANGE_NAMES = {
QUERY_LIMIT, BATCH_CHANGES_LIMIT,
};
static {
NAMES_ALL = new ArrayList<>();
NAMES_ALL.add(ACCESS_DATABASE);
NAMES_ALL.add(ADMINISTRATE_SERVER);
NAMES_ALL.add(BATCH_CHANGES_LIMIT);
NAMES_ALL.add(CREATE_ACCOUNT);
NAMES_ALL.add(CREATE_GROUP);
NAMES_ALL.add(CREATE_PROJECT);
NAMES_ALL.add(EMAIL_REVIEWERS);
NAMES_ALL.add(FLUSH_CACHES);
NAMES_ALL.add(KILL_TASK);
NAMES_ALL.add(MAINTAIN_SERVER);
NAMES_ALL.add(MODIFY_ACCOUNT);
NAMES_ALL.add(PRIORITY);
NAMES_ALL.add(QUERY_LIMIT);
NAMES_ALL.add(RUN_AS);
NAMES_ALL.add(RUN_GC);
NAMES_ALL.add(STREAM_EVENTS);
NAMES_ALL.add(VIEW_ALL_ACCOUNTS);
NAMES_ALL.add(VIEW_CACHES);
NAMES_ALL.add(VIEW_CONNECTIONS);
NAMES_ALL.add(VIEW_PLUGINS);
NAMES_ALL.add(VIEW_QUEUE);
NAMES_LC = new ArrayList<>(NAMES_ALL.size());
for (String name : NAMES_ALL) {
NAMES_LC.add(name.toLowerCase());
}
}
/** @return all valid capability names. */
public static Collection<String> getAllNames() {
return Collections.unmodifiableList(NAMES_ALL);
}
/** @return true if the name is recognized as a capability name. */
public static boolean isCapability(String varName) {
return NAMES_LC.contains(varName.toLowerCase());
}
/** @return true if the capability should have a range attached. */
public static boolean hasRange(String varName) {
for (String n : RANGE_NAMES) {
if (n.equalsIgnoreCase(varName)) {
return true;
}
}
return false;
}
public static List<String> getRangeNames() {
return Collections.unmodifiableList(Arrays.asList(RANGE_NAMES));
}
/** @return the valid range for the capability if it has one, otherwise null. */
public static PermissionRange.WithDefaults getRange(String varName) {
if (QUERY_LIMIT.equalsIgnoreCase(varName)) {
return new PermissionRange.WithDefaults(
varName, 0, Integer.MAX_VALUE, 0, DEFAULT_MAX_QUERY_LIMIT);
}
if (BATCH_CHANGES_LIMIT.equalsIgnoreCase(varName)) {
return new PermissionRange.WithDefaults(
varName, 0, Integer.MAX_VALUE, 0, DEFAULT_MAX_BATCH_CHANGES_LIMIT);
}
return null;
}
private GlobalCapability() {
// Utility class, do not create instances.
}
}