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1 /* |
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2 * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 package sun.security.ssl; |
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27 |
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28 import java.io.IOException; |
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29 import java.nio.ByteBuffer; |
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30 import javax.net.ssl.SSLProtocolException; |
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31 import static sun.security.ssl.SSLExtension.CH_MAX_FRAGMENT_LENGTH; |
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32 import static sun.security.ssl.SSLExtension.EE_MAX_FRAGMENT_LENGTH; |
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33 import sun.security.ssl.SSLExtension.ExtensionConsumer; |
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34 import static sun.security.ssl.SSLExtension.SH_MAX_FRAGMENT_LENGTH; |
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35 import sun.security.ssl.SSLExtension.SSLExtensionSpec; |
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36 import sun.security.ssl.SSLHandshake.HandshakeMessage; |
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37 |
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38 /** |
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39 * Pack of the "max_fragment_length" extensions [RFC6066]. |
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40 */ |
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41 final class MaxFragExtension { |
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42 static final HandshakeProducer chNetworkProducer = |
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43 new CHMaxFragmentLengthProducer(); |
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44 static final ExtensionConsumer chOnLoadConcumer = |
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45 new CHMaxFragmentLengthConsumer(); |
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46 |
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47 static final HandshakeProducer shNetworkProducer = |
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48 new SHMaxFragmentLengthProducer(); |
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49 static final ExtensionConsumer shOnLoadConcumer = |
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50 new SHMaxFragmentLengthConsumer(); |
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51 static final HandshakeConsumer shOnTradeConsumer = |
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52 new SHMaxFragmentLengthUpdate(); |
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53 |
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54 static final HandshakeProducer eeNetworkProducer = |
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55 new EEMaxFragmentLengthProducer(); |
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56 static final ExtensionConsumer eeOnLoadConcumer = |
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57 new EEMaxFragmentLengthConsumer(); |
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58 static final HandshakeConsumer eeOnTradeConsumer = |
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59 new EEMaxFragmentLengthUpdate(); |
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60 |
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61 static final SSLStringize maxFragLenStringize = |
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62 new MaxFragLenStringize(); |
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63 |
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64 /** |
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65 * The "max_fragment_length" extension [RFC 6066]. |
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66 */ |
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67 static final class MaxFragLenSpec implements SSLExtensionSpec { |
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68 byte id; |
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69 |
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70 private MaxFragLenSpec(byte id) { |
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71 this.id = id; |
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72 } |
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73 |
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74 private MaxFragLenSpec(ByteBuffer buffer) throws IOException { |
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75 if (buffer.remaining() != 1) { |
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76 throw new SSLProtocolException( |
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77 "Invalid max_fragment_length extension data"); |
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78 } |
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79 |
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80 this.id = buffer.get(); |
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81 } |
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82 |
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83 @Override |
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84 public String toString() { |
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85 return MaxFragLenEnum.nameOf(id); |
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86 } |
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87 } |
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88 |
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89 private static final class MaxFragLenStringize implements SSLStringize { |
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90 @Override |
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91 public String toString(ByteBuffer buffer) { |
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92 try { |
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93 return (new MaxFragLenSpec(buffer)).toString(); |
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94 } catch (IOException ioe) { |
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95 // For debug logging only, so please swallow exceptions. |
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96 return ioe.getMessage(); |
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97 } |
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98 } |
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99 } |
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100 |
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101 static enum MaxFragLenEnum { |
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102 MFL_512 ((byte)0x01, 512, "2^9"), |
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103 MFL_1024 ((byte)0x02, 1024, "2^10"), |
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104 MFL_2048 ((byte)0x03, 2048, "2^11"), |
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105 MFL_4096 ((byte)0x04, 4096, "2^12"); |
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106 |
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107 final byte id; |
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108 final int fragmentSize; |
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109 final String description; |
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110 |
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111 private MaxFragLenEnum(byte id, int fragmentSize, String description) { |
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112 this.id = id; |
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113 this.fragmentSize = fragmentSize; |
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114 this.description = description; |
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115 } |
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116 |
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117 private static MaxFragLenEnum valueOf(byte id) { |
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118 for (MaxFragLenEnum mfl : MaxFragLenEnum.values()) { |
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119 if (mfl.id == id) { |
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120 return mfl; |
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121 } |
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122 } |
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123 |
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124 return null; |
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125 } |
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126 |
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127 private static String nameOf(byte id) { |
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128 for (MaxFragLenEnum mfl : MaxFragLenEnum.values()) { |
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129 if (mfl.id == id) { |
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130 return mfl.description; |
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131 } |
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132 } |
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133 |
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134 return "UNDEFINED-MAX-FRAGMENT-LENGTH(" + id + ")"; |
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135 } |
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136 |
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137 /** |
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138 * Returns the best match enum constant of the specified |
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139 * fragment size. |
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140 */ |
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141 static MaxFragLenEnum valueOf(int fragmentSize) { |
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142 if (fragmentSize <= 0) { |
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143 return null; |
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144 } else if (fragmentSize < 1024) { |
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145 return MFL_512; |
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146 } else if (fragmentSize < 2048) { |
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147 return MFL_1024; |
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148 } else if (fragmentSize < 4096) { |
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149 return MFL_2048; |
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150 } else if (fragmentSize == 4096) { |
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151 return MFL_4096; |
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152 } |
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153 |
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154 return null; |
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155 } |
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156 } |
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157 |
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158 /** |
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159 * Network data producer of a "max_fragment_length" extension in |
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160 * the ClientHello handshake message. |
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161 */ |
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162 private static final |
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163 class CHMaxFragmentLengthProducer implements HandshakeProducer { |
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164 // Prevent instantiation of this class. |
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165 private CHMaxFragmentLengthProducer() { |
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166 // blank |
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167 } |
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168 |
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169 @Override |
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170 public byte[] produce(ConnectionContext context, |
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171 HandshakeMessage message) throws IOException { |
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172 // The producing happens in client side only. |
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173 ClientHandshakeContext chc = (ClientHandshakeContext)context; |
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174 |
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175 // Is it a supported and enabled extension? |
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176 if (!chc.sslConfig.isAvailable(CH_MAX_FRAGMENT_LENGTH)) { |
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177 if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) { |
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178 SSLLogger.fine( |
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179 "Ignore unavailable max_fragment_length extension"); |
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180 } |
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181 return null; |
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182 } |
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183 |
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184 // Produce the extension and update the context. |
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185 int requestedMFLength; |
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186 if (chc.isResumption && (chc.resumingSession != null)) { |
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187 // The same extension should be sent for resumption. |
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188 requestedMFLength = |
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189 chc.resumingSession.getNegotiatedMaxFragSize(); |
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190 } else if (chc.sslConfig.maximumPacketSize != 0) { |
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191 // Maybe we can calculate the fragment size more accurate |
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192 // by condering the enabled cipher suites in the future. |
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193 requestedMFLength = chc.sslConfig.maximumPacketSize; |
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194 if (chc.sslContext.isDTLS()) { |
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195 requestedMFLength -= DTLSRecord.maxPlaintextPlusSize; |
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196 } else { |
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197 requestedMFLength -= SSLRecord.maxPlaintextPlusSize; |
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198 } |
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199 } else { |
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200 // Need no max_fragment_length extension. |
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201 requestedMFLength = -1; |
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202 } |
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203 |
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204 MaxFragLenEnum mfl = MaxFragLenEnum.valueOf(requestedMFLength); |
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205 if (mfl != null) { |
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206 // update the context. |
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207 chc.handshakeExtensions.put( |
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208 CH_MAX_FRAGMENT_LENGTH, new MaxFragLenSpec(mfl.id)); |
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209 |
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210 return new byte[] { mfl.id }; |
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211 } else { |
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212 // log and ignore, no MFL extension. |
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213 chc.maxFragmentLength = -1; |
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214 if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) { |
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215 SSLLogger.fine( |
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216 "No available max_fragment_length extension can " + |
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217 "be used for fragment size of " + |
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218 requestedMFLength + "bytes"); |
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219 } |
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220 } |
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221 |
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222 return null; |
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223 } |
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224 } |
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225 |
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226 /** |
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227 * Network data consumer of a "max_fragment_length" extension in |
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228 * the ClientHello handshake message. |
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229 */ |
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230 private static final |
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231 class CHMaxFragmentLengthConsumer implements ExtensionConsumer { |
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232 // Prevent instantiation of this class. |
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233 private CHMaxFragmentLengthConsumer() { |
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234 // blank |
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235 } |
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236 |
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237 @Override |
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238 public void consume(ConnectionContext context, |
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239 HandshakeMessage message, ByteBuffer buffer) throws IOException { |
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240 // The comsuming happens in server side only. |
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241 ServerHandshakeContext shc = (ServerHandshakeContext)context; |
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242 |
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243 if (!shc.sslConfig.isAvailable(CH_MAX_FRAGMENT_LENGTH)) { |
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244 if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) { |
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245 SSLLogger.fine( |
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246 "Ignore unavailable max_fragment_length extension"); |
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247 } |
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248 return; // ignore the extension |
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249 } |
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250 |
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251 // Parse the extension. |
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252 MaxFragLenSpec spec; |
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253 try { |
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254 spec = new MaxFragLenSpec(buffer); |
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255 } catch (IOException ioe) { |
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256 shc.conContext.fatal(Alert.UNEXPECTED_MESSAGE, ioe); |
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257 return; // fatal() always throws, make the compiler happy. |
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258 } |
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259 |
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260 MaxFragLenEnum mfle = MaxFragLenEnum.valueOf(spec.id); |
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261 if (mfle == null) { |
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262 shc.conContext.fatal(Alert.ILLEGAL_PARAMETER, |
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263 "the requested maximum fragment length is other " + |
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264 "than the allowed values"); |
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265 } |
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266 |
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267 // Update the context. |
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268 shc.maxFragmentLength = mfle.fragmentSize; |
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269 shc.handshakeExtensions.put(CH_MAX_FRAGMENT_LENGTH, spec); |
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270 |
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271 // No impact on session resumption. |
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272 } |
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273 } |
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274 |
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275 /** |
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276 * Network data producer of a "max_fragment_length" extension in |
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277 * the ServerHello handshake message. |
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278 */ |
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279 private static final |
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280 class SHMaxFragmentLengthProducer implements HandshakeProducer { |
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281 // Prevent instantiation of this class. |
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282 private SHMaxFragmentLengthProducer() { |
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283 // blank |
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284 } |
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285 |
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286 @Override |
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287 public byte[] produce(ConnectionContext context, |
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288 HandshakeMessage message) throws IOException { |
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289 // The producing happens in server side only. |
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290 ServerHandshakeContext shc = (ServerHandshakeContext)context; |
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291 |
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292 // In response to "max_fragment_length" extension request only |
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293 MaxFragLenSpec spec = (MaxFragLenSpec) |
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294 shc.handshakeExtensions.get(CH_MAX_FRAGMENT_LENGTH); |
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295 if (spec == null) { |
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296 if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) { |
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297 SSLLogger.finest( |
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298 "Ignore unavailable max_fragment_length extension"); |
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299 } |
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300 return null; // ignore the extension |
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301 } |
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302 |
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303 if ((shc.maxFragmentLength > 0) && |
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304 (shc.sslConfig.maximumPacketSize != 0)) { |
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305 int estimatedMaxFragSize = |
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306 shc.negotiatedCipherSuite.calculatePacketSize( |
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307 shc.maxFragmentLength, shc.negotiatedProtocol, |
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308 shc.sslContext.isDTLS()); |
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309 if (estimatedMaxFragSize > shc.sslConfig.maximumPacketSize) { |
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310 // For better interoperability, abort the maximum |
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311 // fragment length negotiation, rather than terminate |
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312 // the connection with a fatal alert. |
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313 if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) { |
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314 SSLLogger.fine( |
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315 "Abort the maximum fragment length negotiation, " + |
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316 "may overflow the maximum packet size limit."); |
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317 } |
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318 shc.maxFragmentLength = -1; |
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319 } |
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320 } |
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321 |
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322 // update the context |
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323 if (shc.maxFragmentLength > 0) { |
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324 shc.handshakeSession.setNegotiatedMaxFragSize( |
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325 shc.maxFragmentLength); |
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326 shc.conContext.inputRecord.changeFragmentSize( |
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327 shc.maxFragmentLength); |
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328 shc.conContext.outputRecord.changeFragmentSize( |
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329 shc.maxFragmentLength); |
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330 |
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331 // The response extension data is the same as the requested one. |
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332 shc.handshakeExtensions.put(SH_MAX_FRAGMENT_LENGTH, spec); |
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333 return new byte[] { spec.id }; |
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334 } |
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335 |
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336 return null; |
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337 } |
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338 } |
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339 |
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340 /** |
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341 * Network data consumer of a "max_fragment_length" extension in |
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342 * the ServerHello handshake message. |
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343 */ |
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344 private static final |
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345 class SHMaxFragmentLengthConsumer implements ExtensionConsumer { |
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346 // Prevent instantiation of this class. |
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347 private SHMaxFragmentLengthConsumer() { |
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348 // blank |
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349 } |
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350 |
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351 @Override |
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352 public void consume(ConnectionContext context, |
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353 HandshakeMessage message, ByteBuffer buffer) throws IOException { |
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354 |
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355 // The comsuming happens in client side only. |
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356 ClientHandshakeContext chc = (ClientHandshakeContext)context; |
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357 |
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358 // In response to "max_fragment_length" extension request only |
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359 MaxFragLenSpec requestedSpec = (MaxFragLenSpec) |
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360 chc.handshakeExtensions.get(CH_MAX_FRAGMENT_LENGTH); |
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361 if (requestedSpec == null) { |
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362 chc.conContext.fatal(Alert.UNEXPECTED_MESSAGE, |
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363 "Unexpected max_fragment_length extension in ServerHello"); |
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364 } |
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365 |
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366 // Parse the extension. |
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367 MaxFragLenSpec spec; |
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368 try { |
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369 spec = new MaxFragLenSpec(buffer); |
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370 } catch (IOException ioe) { |
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371 chc.conContext.fatal(Alert.UNEXPECTED_MESSAGE, ioe); |
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372 return; // fatal() always throws, make the compiler happy. |
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373 } |
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374 |
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375 if (spec.id != requestedSpec.id) { |
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376 chc.conContext.fatal(Alert.ILLEGAL_PARAMETER, |
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377 "The maximum fragment length response is not requested"); |
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378 } |
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379 |
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380 MaxFragLenEnum mfle = MaxFragLenEnum.valueOf(spec.id); |
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381 if (mfle == null) { |
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382 chc.conContext.fatal(Alert.ILLEGAL_PARAMETER, |
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383 "the requested maximum fragment length is other " + |
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384 "than the allowed values"); |
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385 } |
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386 |
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387 // update the context |
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388 chc.maxFragmentLength = mfle.fragmentSize; |
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389 chc.handshakeExtensions.put(SH_MAX_FRAGMENT_LENGTH, spec); |
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390 } |
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391 } |
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392 |
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393 /** |
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394 * After session creation consuming of a "max_fragment_length" |
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395 * extension in the ClientHello handshake message. |
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396 */ |
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397 private static final class SHMaxFragmentLengthUpdate |
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398 implements HandshakeConsumer { |
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399 |
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400 // Prevent instantiation of this class. |
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401 private SHMaxFragmentLengthUpdate() { |
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402 // blank |
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403 } |
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404 |
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405 @Override |
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406 public void consume(ConnectionContext context, |
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407 HandshakeMessage message) throws IOException { |
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408 // The comsuming happens in client side only. |
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409 ClientHandshakeContext chc = (ClientHandshakeContext)context; |
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410 |
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411 MaxFragLenSpec spec = (MaxFragLenSpec) |
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412 chc.handshakeExtensions.get(SH_MAX_FRAGMENT_LENGTH); |
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413 if (spec == null) { |
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414 // Ignore, no "max_fragment_length" extension response. |
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415 return; |
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416 } |
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417 |
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418 if ((chc.maxFragmentLength > 0) && |
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419 (chc.sslConfig.maximumPacketSize != 0)) { |
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420 int estimatedMaxFragSize = |
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421 chc.negotiatedCipherSuite.calculatePacketSize( |
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422 chc.maxFragmentLength, chc.negotiatedProtocol, |
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423 chc.sslContext.isDTLS()); |
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424 if (estimatedMaxFragSize > chc.sslConfig.maximumPacketSize) { |
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425 // For better interoperability, abort the maximum |
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426 // fragment length negotiation, rather than terminate |
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427 // the connection with a fatal alert. |
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428 if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) { |
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429 SSLLogger.fine( |
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430 "Abort the maximum fragment length negotiation, " + |
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431 "may overflow the maximum packet size limit."); |
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432 } |
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433 chc.maxFragmentLength = -1; |
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434 } |
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435 } |
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436 |
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437 // update the context |
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438 if (chc.maxFragmentLength > 0) { |
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439 chc.handshakeSession.setNegotiatedMaxFragSize( |
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440 chc.maxFragmentLength); |
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441 chc.conContext.inputRecord.changeFragmentSize( |
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442 chc.maxFragmentLength); |
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443 chc.conContext.outputRecord.changeFragmentSize( |
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444 chc.maxFragmentLength); |
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445 } |
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446 } |
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447 } |
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448 |
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449 /** |
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450 * Network data producer of a "max_fragment_length" extension in |
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451 * the EncryptedExtensions handshake message. |
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452 */ |
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453 private static final |
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454 class EEMaxFragmentLengthProducer implements HandshakeProducer { |
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455 // Prevent instantiation of this class. |
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456 private EEMaxFragmentLengthProducer() { |
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457 // blank |
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458 } |
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459 |
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460 @Override |
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461 public byte[] produce(ConnectionContext context, |
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462 HandshakeMessage message) throws IOException { |
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463 // The producing happens in server side only. |
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464 ServerHandshakeContext shc = (ServerHandshakeContext)context; |
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465 |
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466 // In response to "max_fragment_length" extension request only |
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467 MaxFragLenSpec spec = (MaxFragLenSpec) |
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468 shc.handshakeExtensions.get(CH_MAX_FRAGMENT_LENGTH); |
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469 if (spec == null) { |
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470 if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) { |
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471 SSLLogger.finest( |
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472 "Ignore unavailable max_fragment_length extension"); |
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473 } |
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474 return null; // ignore the extension |
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475 } |
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476 |
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477 if ((shc.maxFragmentLength > 0) && |
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478 (shc.sslConfig.maximumPacketSize != 0)) { |
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479 int estimatedMaxFragSize = |
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480 shc.negotiatedCipherSuite.calculatePacketSize( |
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481 shc.maxFragmentLength, shc.negotiatedProtocol, |
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482 shc.sslContext.isDTLS()); |
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483 if (estimatedMaxFragSize > shc.sslConfig.maximumPacketSize) { |
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484 // For better interoperability, abort the maximum |
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485 // fragment length negotiation, rather than terminate |
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486 // the connection with a fatal alert. |
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487 if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) { |
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488 SSLLogger.fine( |
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489 "Abort the maximum fragment length negotiation, " + |
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490 "may overflow the maximum packet size limit."); |
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491 } |
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492 shc.maxFragmentLength = -1; |
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493 } |
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494 } |
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495 |
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496 // update the context |
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497 if (shc.maxFragmentLength > 0) { |
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498 shc.handshakeSession.setNegotiatedMaxFragSize( |
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499 shc.maxFragmentLength); |
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500 shc.conContext.inputRecord.changeFragmentSize( |
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501 shc.maxFragmentLength); |
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502 shc.conContext.outputRecord.changeFragmentSize( |
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503 shc.maxFragmentLength); |
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504 |
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505 // The response extension data is the same as the requested one. |
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506 shc.handshakeExtensions.put(EE_MAX_FRAGMENT_LENGTH, spec); |
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507 return new byte[] { spec.id }; |
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508 } |
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509 |
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510 return null; |
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511 } |
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512 } |
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513 |
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514 /** |
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515 * Network data consumer of a "max_fragment_length" extension in the |
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516 * EncryptedExtensions handshake message. |
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517 */ |
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518 private static final |
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519 class EEMaxFragmentLengthConsumer implements ExtensionConsumer { |
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520 // Prevent instantiation of this class. |
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521 private EEMaxFragmentLengthConsumer() { |
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522 // blank |
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523 } |
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524 |
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525 @Override |
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526 public void consume(ConnectionContext context, |
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527 HandshakeMessage message, ByteBuffer buffer) throws IOException { |
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528 // The comsuming happens in client side only. |
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529 ClientHandshakeContext chc = (ClientHandshakeContext)context; |
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530 |
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531 // In response to "max_fragment_length" extension request only |
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532 MaxFragLenSpec requestedSpec = (MaxFragLenSpec) |
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533 chc.handshakeExtensions.get(CH_MAX_FRAGMENT_LENGTH); |
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534 if (requestedSpec == null) { |
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535 chc.conContext.fatal(Alert.UNEXPECTED_MESSAGE, |
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536 "Unexpected max_fragment_length extension in ServerHello"); |
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537 } |
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538 |
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539 // Parse the extension. |
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540 MaxFragLenSpec spec; |
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541 try { |
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542 spec = new MaxFragLenSpec(buffer); |
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543 } catch (IOException ioe) { |
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544 chc.conContext.fatal(Alert.UNEXPECTED_MESSAGE, ioe); |
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545 return; // fatal() always throws, make the compiler happy. |
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546 } |
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547 |
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548 if (spec.id != requestedSpec.id) { |
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549 chc.conContext.fatal(Alert.ILLEGAL_PARAMETER, |
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550 "The maximum fragment length response is not requested"); |
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551 } |
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552 |
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553 MaxFragLenEnum mfle = MaxFragLenEnum.valueOf(spec.id); |
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554 if (mfle == null) { |
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555 chc.conContext.fatal(Alert.ILLEGAL_PARAMETER, |
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556 "the requested maximum fragment length is other " + |
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557 "than the allowed values"); |
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558 } |
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559 |
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560 // update the context |
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561 chc.maxFragmentLength = mfle.fragmentSize; |
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562 chc.handshakeExtensions.put(EE_MAX_FRAGMENT_LENGTH, spec); |
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563 } |
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564 } |
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565 |
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566 /** |
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567 * After session creation consuming of a "max_fragment_length" |
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568 * extension in the EncryptedExtensions handshake message. |
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569 */ |
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570 private static final |
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571 class EEMaxFragmentLengthUpdate implements HandshakeConsumer { |
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572 // Prevent instantiation of this class. |
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573 private EEMaxFragmentLengthUpdate() { |
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574 // blank |
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575 } |
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576 |
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577 @Override |
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578 public void consume(ConnectionContext context, |
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579 HandshakeMessage message) throws IOException { |
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580 // The comsuming happens in client side only. |
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581 ClientHandshakeContext chc = (ClientHandshakeContext)context; |
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582 |
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583 MaxFragLenSpec spec = (MaxFragLenSpec) |
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584 chc.handshakeExtensions.get(EE_MAX_FRAGMENT_LENGTH); |
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585 if (spec == null) { |
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586 // Ignore, no "max_fragment_length" extension response. |
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587 return; |
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588 } |
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589 |
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590 if ((chc.maxFragmentLength > 0) && |
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591 (chc.sslConfig.maximumPacketSize != 0)) { |
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592 int estimatedMaxFragSize = |
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593 chc.negotiatedCipherSuite.calculatePacketSize( |
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594 chc.maxFragmentLength, chc.negotiatedProtocol, |
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595 chc.sslContext.isDTLS()); |
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596 if (estimatedMaxFragSize > chc.sslConfig.maximumPacketSize) { |
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597 // For better interoperability, abort the maximum |
|
598 // fragment length negotiation, rather than terminate |
|
599 // the connection with a fatal alert. |
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600 if (SSLLogger.isOn && SSLLogger.isOn("ssl,handshake")) { |
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601 SSLLogger.fine( |
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602 "Abort the maximum fragment length negotiation, " + |
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603 "may overflow the maximum packet size limit."); |
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604 } |
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605 chc.maxFragmentLength = -1; |
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606 } |
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607 } |
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608 |
|
609 // update the context |
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610 if (chc.maxFragmentLength > 0) { |
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611 chc.handshakeSession.setNegotiatedMaxFragSize( |
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612 chc.maxFragmentLength); |
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613 chc.conContext.inputRecord.changeFragmentSize( |
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614 chc.maxFragmentLength); |
|
615 chc.conContext.outputRecord.changeFragmentSize( |
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616 chc.maxFragmentLength); |
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617 } |
|
618 } |
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619 } |
|
620 } |