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// Copyright (C) 2016 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 com.google.common.collect.ImmutableBiMap;
import com.google.common.collect.Iterables;
import com.google.gerrit.common.data.AccessSection;
import com.google.gerrit.common.data.Permission;
import com.google.gerrit.common.data.PermissionRule;
import com.google.gerrit.common.data.RefConfigSection;
import com.google.gerrit.common.errors.NoSuchGroupException;
import com.google.gerrit.extensions.api.access.AccessSectionInfo;
import com.google.gerrit.extensions.api.access.PermissionInfo;
import com.google.gerrit.extensions.api.access.PermissionRuleInfo;
import com.google.gerrit.extensions.api.access.ProjectAccessInfo;
import com.google.gerrit.extensions.restapi.ResourceConflictException;
import com.google.gerrit.extensions.restapi.ResourceNotFoundException;
import com.google.gerrit.extensions.restapi.RestReadView;
import com.google.gerrit.reviewdb.client.AccountGroup;
import com.google.gerrit.reviewdb.client.Project;
import com.google.gerrit.reviewdb.client.RefNames;
import com.google.gerrit.server.CurrentUser;
import com.google.gerrit.server.account.GroupBackend;
import com.google.gerrit.server.account.GroupControl;
import com.google.gerrit.server.config.AllProjectsName;
import com.google.gerrit.server.git.MetaDataUpdate;
import com.google.gerrit.server.git.ProjectConfig;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.Singleton;
import java.io.IOException;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import org.eclipse.jgit.errors.ConfigInvalidException;
import org.eclipse.jgit.errors.RepositoryNotFoundException;
@Singleton
public class GetAccess implements RestReadView {
public static final ImmutableBiMap ACTION_TYPE =
ImmutableBiMap.of(
PermissionRule.Action.ALLOW,
PermissionRuleInfo.Action.ALLOW,
PermissionRule.Action.BATCH,
PermissionRuleInfo.Action.BATCH,
PermissionRule.Action.BLOCK,
PermissionRuleInfo.Action.BLOCK,
PermissionRule.Action.DENY,
PermissionRuleInfo.Action.DENY,
PermissionRule.Action.INTERACTIVE,
PermissionRuleInfo.Action.INTERACTIVE);
private final Provider self;
private final GroupControl.Factory groupControlFactory;
private final AllProjectsName allProjectsName;
private final ProjectJson projectJson;
private final ProjectCache projectCache;
private final MetaDataUpdate.Server metaDataUpdateFactory;
private final ProjectControl.GenericFactory projectControlFactory;
private final GroupBackend groupBackend;
@Inject
public GetAccess(
Provider self,
GroupControl.Factory groupControlFactory,
AllProjectsName allProjectsName,
ProjectCache projectCache,
MetaDataUpdate.Server metaDataUpdateFactory,
ProjectJson projectJson,
ProjectControl.GenericFactory projectControlFactory,
GroupBackend groupBackend) {
this.self = self;
this.groupControlFactory = groupControlFactory;
this.allProjectsName = allProjectsName;
this.projectJson = projectJson;
this.projectCache = projectCache;
this.projectControlFactory = projectControlFactory;
this.metaDataUpdateFactory = metaDataUpdateFactory;
this.groupBackend = groupBackend;
}
public ProjectAccessInfo apply(Project.NameKey nameKey)
throws ResourceNotFoundException, ResourceConflictException, IOException {
try {
return this.apply(new ProjectResource(projectControlFactory.controlFor(nameKey, self.get())));
} catch (NoSuchProjectException e) {
throw new ResourceNotFoundException(nameKey.get());
}
}
@Override
public ProjectAccessInfo apply(ProjectResource rsrc)
throws ResourceNotFoundException, ResourceConflictException, IOException {
// Load the current configuration from the repository, ensuring it's the most
// recent version available. If it differs from what was in the project
// state, force a cache flush now.
//
Project.NameKey projectName = rsrc.getNameKey();
ProjectAccessInfo info = new ProjectAccessInfo();
ProjectConfig config;
ProjectControl pc = open(projectName);
RefControl metaConfigControl = pc.controlForRef(RefNames.REFS_CONFIG);
try (MetaDataUpdate md = metaDataUpdateFactory.create(projectName)) {
config = ProjectConfig.read(md);
if (config.updateGroupNames(groupBackend)) {
md.setMessage("Update group names\n");
config.commit(md);
projectCache.evict(config.getProject());
pc = open(projectName);
} else if (config.getRevision() != null
&& !config.getRevision().equals(pc.getProjectState().getConfig().getRevision())) {
projectCache.evict(config.getProject());
pc = open(projectName);
}
} catch (ConfigInvalidException e) {
throw new ResourceConflictException(e.getMessage());
} catch (RepositoryNotFoundException e) {
throw new ResourceNotFoundException(rsrc.getName());
}
info.local = new HashMap<>();
info.ownerOf = new HashSet<>();
Map visibleGroups = new HashMap<>();
for (AccessSection section : config.getAccessSections()) {
String name = section.getName();
if (AccessSection.GLOBAL_CAPABILITIES.equals(name)) {
if (pc.isOwner()) {
info.local.put(name, createAccessSection(section));
info.ownerOf.add(name);
} else if (metaConfigControl.isVisible()) {
info.local.put(section.getName(), createAccessSection(section));
}
} else if (RefConfigSection.isValid(name)) {
RefControl rc = pc.controlForRef(name);
if (rc.isOwner()) {
info.local.put(name, createAccessSection(section));
info.ownerOf.add(name);
} else if (metaConfigControl.isVisible()) {
info.local.put(name, createAccessSection(section));
} else if (rc.isVisible()) {
// Filter the section to only add rules describing groups that
// are visible to the current-user. This includes any group the
// user is a member of, as well as groups they own or that
// are visible to all users.
AccessSection dst = null;
for (Permission srcPerm : section.getPermissions()) {
Permission dstPerm = null;
for (PermissionRule srcRule : srcPerm.getRules()) {
AccountGroup.UUID group = srcRule.getGroup().getUUID();
if (group == null) {
continue;
}
Boolean canSeeGroup = visibleGroups.get(group);
if (canSeeGroup == null) {
try {
canSeeGroup = groupControlFactory.controlFor(group).isVisible();
} catch (NoSuchGroupException e) {
canSeeGroup = Boolean.FALSE;
}
visibleGroups.put(group, canSeeGroup);
}
if (canSeeGroup) {
if (dstPerm == null) {
if (dst == null) {
dst = new AccessSection(name);
info.local.put(name, createAccessSection(dst));
}
dstPerm = dst.getPermission(srcPerm.getName(), true);
}
dstPerm.add(srcRule);
}
}
}
}
}
}
if (info.ownerOf.isEmpty() && pc.isOwnerAnyRef()) {
// Special case: If the section list is empty, this project has no current
// access control information. Rely on what ProjectControl determines
// is ownership, which probably means falling back to site administrators.
info.ownerOf.add(AccessSection.ALL);
}
if (config.getRevision() != null) {
info.revision = config.getRevision().name();
}
ProjectState parent = Iterables.getFirst(pc.getProjectState().parents(), null);
if (parent != null) {
info.inheritsFrom = projectJson.format(parent.getProject());
}
if (pc.getProject().getNameKey().equals(allProjectsName)) {
if (pc.isOwner()) {
info.ownerOf.add(AccessSection.GLOBAL_CAPABILITIES);
}
}
info.isOwner = toBoolean(pc.isOwner());
info.canUpload =
toBoolean(pc.isOwner() || (metaConfigControl.isVisible() && metaConfigControl.canUpload()));
info.canAdd = toBoolean(pc.canAddRefs());
info.canAddTags = toBoolean(pc.canAddTagRefs());
info.configVisible = pc.isOwner() || metaConfigControl.isVisible();
return info;
}
private AccessSectionInfo createAccessSection(AccessSection section) {
AccessSectionInfo accessSectionInfo = new AccessSectionInfo();
accessSectionInfo.permissions = new HashMap<>();
for (Permission p : section.getPermissions()) {
PermissionInfo pInfo = new PermissionInfo(p.getLabel(), p.getExclusiveGroup() ? true : null);
pInfo.rules = new HashMap<>();
for (PermissionRule r : p.getRules()) {
PermissionRuleInfo info =
new PermissionRuleInfo(ACTION_TYPE.get(r.getAction()), r.getForce());
if (r.hasRange()) {
info.max = r.getMax();
info.min = r.getMin();
}
AccountGroup.UUID group = r.getGroup().getUUID();
if (group != null) {
pInfo.rules.put(group.get(), info);
}
}
accessSectionInfo.permissions.put(p.getName(), pInfo);
}
return accessSectionInfo;
}
private ProjectControl open(Project.NameKey projectName)
throws ResourceNotFoundException, IOException {
try {
return projectControlFactory.validateFor(
projectName, ProjectControl.OWNER | ProjectControl.VISIBLE, self.get());
} catch (NoSuchProjectException e) {
throw new ResourceNotFoundException(projectName.get());
}
}
private static Boolean toBoolean(boolean value) {
return value ? true : null;
}
}
