001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *   http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019package org.apache.maven.scm.provider.git.jgit.command;
020
021import java.util.Arrays;
022
023import org.codehaus.plexus.components.interactivity.Prompter;
024import org.codehaus.plexus.components.interactivity.PrompterException;
025import org.eclipse.jgit.errors.UnsupportedCredentialItem;
026import org.eclipse.jgit.transport.CredentialItem;
027import org.eclipse.jgit.transport.CredentialsProvider;
028import org.eclipse.jgit.transport.URIish;
029
030/**
031 * {@link CredentialsProvider} leveraging the {@link Prompter} component.
032 */
033public class PlexusInteractivityCredentialsProvider extends CredentialsProvider {
034    private boolean interactive;
035    private final Prompter prompter;
036
037    public PlexusInteractivityCredentialsProvider(Prompter prompter) {
038        this.interactive = true;
039        this.prompter = prompter;
040    }
041
042    @Override
043    public boolean get(URIish uri, CredentialItem... items) {
044        for (CredentialItem item : items) {
045            try {
046                get(uri, item);
047            } catch (PrompterException e) {
048                throw new IllegalStateException("Cannot prompt user", e);
049            }
050        }
051        return true;
052    }
053
054    private void get(URIish uri, CredentialItem item) throws PrompterException {
055        if (item instanceof CredentialItem.InformationalMessage) {
056            // works even in non-interactive mode
057            prompter.showMessage(item.getPromptText());
058        } else {
059            if (!interactive) {
060                throw new UnsupportedCredentialItem(
061                        uri, "Cannot provide '" + item.getClass() + "' in non-interactive mode");
062            }
063            if (item instanceof CredentialItem.YesNoType) {
064                CredentialItem.YesNoType yesNoItem = (CredentialItem.YesNoType) item;
065                String value = prompter.prompt(item.getPromptText(), Arrays.asList("yes", "no"));
066                yesNoItem.setValue(value.equals("yes"));
067            } else if (item instanceof CredentialItem.Password) {
068                CredentialItem.Password passwordItem = (CredentialItem.Password) item;
069                String password = prompter.promptForPassword(passwordItem.getPromptText());
070                passwordItem.setValue(password.toCharArray());
071            } else if (item instanceof CredentialItem.Username) {
072                CredentialItem.Username usernameItem = (CredentialItem.Username) item;
073                String username = prompter.prompt(usernameItem.getPromptText());
074                usernameItem.setValue(username);
075            } else if (item instanceof CredentialItem.StringType) {
076                CredentialItem.StringType stringItem = (CredentialItem.StringType) item;
077                String value = prompter.prompt(stringItem.getPromptText());
078                stringItem.setValue(value);
079            } else if (item instanceof CredentialItem.CharArrayType) {
080                CredentialItem.CharArrayType charArrayItem = (CredentialItem.CharArrayType) item;
081                String value = prompter.prompt(charArrayItem.getPromptText());
082                charArrayItem.setValue(value.toCharArray());
083            } else {
084                throw new UnsupportedCredentialItem(
085                        uri, "This provider does not support items of type '" + item.getClass() + "'");
086            }
087        }
088    }
089
090    public void setInteractive(boolean interactive) {
091        this.interactive = interactive;
092    }
093
094    @Override
095    public boolean isInteractive() {
096        return interactive;
097    }
098
099    @Override
100    public boolean supports(CredentialItem... items) {
101        return true;
102    }
103}