Jerome Poichet | 7c99785 | 2014-05-20 10:50:05 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2009 Google Inc. All rights reserved. |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.google.polo.pairing; |
| 18 | |
| 19 | import com.google.polo.exception.PoloException; |
| 20 | |
| 21 | import java.io.IOException; |
| 22 | import java.io.InputStream; |
| 23 | import java.io.OutputStream; |
| 24 | import java.security.cert.Certificate; |
| 25 | |
| 26 | import javax.net.ssl.SSLSocket; |
| 27 | |
| 28 | /** |
| 29 | * Container class for various bits of state related to a pairing session. |
| 30 | */ |
| 31 | public class PairingContext { |
| 32 | |
| 33 | /** |
| 34 | * The {@link Certificate} of the local endpoint of the protocol. |
| 35 | */ |
| 36 | private Certificate mLocalCertificate; |
| 37 | |
| 38 | /** |
| 39 | * The {@link Certificate} of the remote endpoint of the protocol. |
| 40 | */ |
| 41 | private Certificate mPeerCertificate; |
| 42 | |
| 43 | /** |
| 44 | * An {@link InputStream} for the peer in the protocol. |
| 45 | */ |
| 46 | private InputStream mPeerInputStream; |
| 47 | |
| 48 | /** |
| 49 | * An {@link OutputStream} for the peer in the protocol. |
| 50 | */ |
| 51 | private OutputStream mPeerOutputStream; |
| 52 | |
| 53 | /** |
| 54 | * {@code true} if this context is for a server endpoint. |
| 55 | */ |
| 56 | private final boolean mIsServer; |
| 57 | |
| 58 | /** |
| 59 | * Constructs a new instance. |
| 60 | * |
| 61 | * @param localCertificate the local endpoint's {@link Certificate} |
| 62 | * @param peerCertificate the remote endpoint's {@link Certificate} |
| 63 | * @param peerInputStream an {@link InputStream} from the peer |
| 64 | * @param peerOutputStream a {@link OutputStream} to the peer |
| 65 | * @param isServer {@code true} if this endpoint it the server |
| 66 | */ |
| 67 | public PairingContext(Certificate localCertificate, |
| 68 | Certificate peerCertificate, InputStream peerInputStream, |
| 69 | OutputStream peerOutputStream, boolean isServer) { |
| 70 | setLocalCertificate(localCertificate); |
| 71 | setPeerCertificate(peerCertificate); |
| 72 | setPeerInputStream(peerInputStream); |
| 73 | setPeerOutputStream(peerOutputStream); |
| 74 | mIsServer = isServer; |
| 75 | } |
| 76 | |
| 77 | /** |
| 78 | * Constructs a new instance from an {@link SSLSocket}. |
| 79 | * |
| 80 | * @param socket the socket to use |
| 81 | * @param isServer {@code true} if this endpoint is the server |
| 82 | * @return the new instance |
| 83 | * @throws PoloException if certificates could not be obtained |
| 84 | * @throws IOException if the socket's streams could not be obtained |
| 85 | */ |
| 86 | public static PairingContext fromSslSocket(SSLSocket socket, boolean isServer) |
| 87 | throws PoloException, IOException { |
| 88 | Certificate localCert = PoloUtil.getLocalCert(socket.getSession()); |
| 89 | Certificate peerCert = PoloUtil.getPeerCert(socket.getSession()); |
| 90 | InputStream input = socket.getInputStream(); |
| 91 | OutputStream output = socket.getOutputStream(); |
| 92 | return new PairingContext(localCert, peerCert, input, output, isServer); |
| 93 | } |
| 94 | |
| 95 | public void setLocalCertificate(Certificate localCertificate) { |
| 96 | mLocalCertificate = localCertificate; |
| 97 | } |
| 98 | |
| 99 | public Certificate getClientCertificate() { |
| 100 | if (isServer()) { |
| 101 | return mPeerCertificate; |
| 102 | } else { |
| 103 | return mLocalCertificate; |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | public void setPeerCertificate(Certificate peerCertificate) { |
| 108 | mPeerCertificate = peerCertificate; |
| 109 | } |
| 110 | |
| 111 | public Certificate getServerCertificate() { |
| 112 | if (isServer()) { |
| 113 | return mLocalCertificate; |
| 114 | } else { |
| 115 | return mPeerCertificate; |
| 116 | } |
| 117 | } |
| 118 | |
| 119 | public void setPeerInputStream(InputStream peerInputStream) { |
| 120 | mPeerInputStream = peerInputStream; |
| 121 | } |
| 122 | |
| 123 | public InputStream getPeerInputStream() { |
| 124 | return mPeerInputStream; |
| 125 | } |
| 126 | |
| 127 | public void setPeerOutputStream(OutputStream peerOutputStream) { |
| 128 | mPeerOutputStream = peerOutputStream; |
| 129 | } |
| 130 | |
| 131 | public OutputStream getPeerOutputStream() { |
| 132 | return mPeerOutputStream; |
| 133 | } |
| 134 | |
| 135 | public boolean isServer() { |
| 136 | return mIsServer; |
| 137 | } |
| 138 | |
| 139 | public boolean isClient() { |
| 140 | return !(isServer()); |
| 141 | } |
| 142 | |
| 143 | } |