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 *
033 */
034public class PlexusInteractivityCredentialsProvider extends CredentialsProvider {
035    private boolean interactive;
036    private final Prompter prompter;
037
038    public PlexusInteractivityCredentialsProvider(Prompter prompter) {
039        this.interactive = true;
040        this.prompter = prompter;
041    }
042
043    @Override
044    public boolean get(URIish uri, CredentialItem... items) {
045        for (CredentialItem item : items) {
046            try {
047                get(uri, item);
048            } catch (PrompterException e) {
049                throw new IllegalStateException("Cannot prompt user", e);
050            }
051        }
052        return true;
053    }
054
055    private void get(URIish uri, CredentialItem item) throws PrompterException {
056        if (item instanceof CredentialItem.InformationalMessage) {
057            // works even in non-interactive mode
058            prompter.showMessage(item.getPromptText());
059        } else {
060            if (!interactive) {
061                throw new UnsupportedCredentialItem(
062                        uri, "Cannot provide '" + item.getClass() + "' in non-interactive mode");
063            }
064            if (item instanceof CredentialItem.YesNoType) {
065                CredentialItem.YesNoType yesNoItem = (CredentialItem.YesNoType) item;
066                String value = prompter.prompt(item.getPromptText(), Arrays.asList("yes", "no"));
067                yesNoItem.setValue(value.equals("yes"));
068            } else if (item instanceof CredentialItem.Password) {
069                CredentialItem.Password passwordItem = (CredentialItem.Password) item;
070                String password = prompter.promptForPassword(passwordItem.getPromptText());
071                passwordItem.setValue(password.toCharArray());
072            } else if (item instanceof CredentialItem.Username) {
073                CredentialItem.Username usernameItem = (CredentialItem.Username) item;
074                String username = prompter.prompt(usernameItem.getPromptText());
075                usernameItem.setValue(username);
076            } else if (item instanceof CredentialItem.StringType) {
077                CredentialItem.StringType stringItem = (CredentialItem.StringType) item;
078                String value = prompter.prompt(stringItem.getPromptText());
079                stringItem.setValue(value);
080            } else if (item instanceof CredentialItem.CharArrayType) {
081                CredentialItem.CharArrayType charArrayItem = (CredentialItem.CharArrayType) item;
082                String value = prompter.prompt(charArrayItem.getPromptText());
083                charArrayItem.setValue(value.toCharArray());
084            } else {
085                throw new UnsupportedCredentialItem(
086                        uri, "This provider does not support items of type '" + item.getClass() + "'");
087            }
088        }
089    }
090
091    public void setInteractive(boolean interactive) {
092        this.interactive = interactive;
093    }
094
095    @Override
096    public boolean isInteractive() {
097        return interactive;
098    }
099
100    @Override
101    public boolean supports(CredentialItem... items) {
102        return true;
103    }
104}