/*
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* Copyright 2011 gitblit.com.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.gitblit.servlet;
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import com.google.inject.Inject;
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import com.google.inject.Singleton;
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import com.gitblit.Constants.AccessRestrictionType;
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import com.gitblit.manager.IAuthenticationManager;
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import com.gitblit.manager.IRepositoryManager;
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import com.gitblit.manager.IRuntimeManager;
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import com.gitblit.models.RepositoryModel;
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import com.gitblit.models.UserModel;
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/**
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* The DownloadZipFilter is an AccessRestrictionFilter which ensures that zip
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* requests for view-restricted repositories have proper authentication
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* credentials and are authorized.
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*
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* @author James Moger
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*
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*/
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@Singleton
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public class DownloadZipFilter extends AccessRestrictionFilter {
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@Inject
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public DownloadZipFilter(
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IRuntimeManager runtimeManager,
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IAuthenticationManager authenticationManager,
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IRepositoryManager repositoryManager) {
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super(runtimeManager, authenticationManager, repositoryManager);
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}
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/**
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* Extract the repository name from the url.
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*
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* @param url
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* @return repository name
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*/
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@Override
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protected String extractRepositoryName(String url) {
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int a = url.indexOf("r=");
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if (a > -1) {
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String repository = url.substring(a + 2);
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if (repository.indexOf('&') > -1) {
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repository = repository.substring(0, repository.indexOf('&'));
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}
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return repository;
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}
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return null;
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}
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/**
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* Analyze the url and returns the action of the request.
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*
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* @param url
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* @return action of the request
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*/
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@Override
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protected String getUrlRequestAction(String url) {
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return "DOWNLOAD";
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}
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/**
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* Determine if a non-existing repository can be created using this filter.
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*
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* @return true if the filter allows repository creation
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*/
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@Override
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protected boolean isCreationAllowed(String action) {
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return false;
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}
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/**
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* Determine if the action may be executed on the repository.
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*
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* @param repository
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* @param action
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* @param method
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* @return true if the action may be performed
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*/
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@Override
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protected boolean isActionAllowed(RepositoryModel repository, String action, String method) {
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return true;
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}
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/**
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* Determine if the repository requires authentication.
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*
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* @param repository
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* @param action
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* @param method
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* @return true if authentication required
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*/
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@Override
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protected boolean requiresAuthentication(RepositoryModel repository, String action, String method) {
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return repository.accessRestriction.atLeast(AccessRestrictionType.VIEW);
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}
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/**
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* Determine if the user can access the repository and perform the specified
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* action.
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*
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* @param repository
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* @param user
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* @param action
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* @return true if user may execute the action on the repository
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*/
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@Override
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protected boolean canAccess(RepositoryModel repository, UserModel user, String action) {
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return user.canView(repository);
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}
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}
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