1 | /* |
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2 | Tibisay Movil |
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3 | |
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4 | Copyright (C) 2013 Antonio Araujo (aaraujo@cenditel.gob.ve), Jose Ruiz |
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5 | (jruiz@cenditel.gob.ve), Fundacion Centro Nacional de Desarrollo e |
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6 | Investigacion en Tecnologias Libres - CENDITEL. |
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7 | |
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8 | La Fundación CENDITEL concede permiso para usar, copiar, distribuir y/o |
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9 | modificar este programa, reconociendo el derecho que la humanidad posee al |
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10 | libre acceso al conocimiento, bajo los términos de la licencia de software |
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11 | GPL versión 2.0 de la Free Software Foundation. |
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12 | |
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13 | Este programa se distribuye con la esperanza de que sea util, pero SIN |
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14 | NINGUNA GARANTIA; tampoco las implicitas garantias de MERCANTILIDAD o |
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15 | ADECUACION A UN PROPOSITO PARTICULAR. |
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16 | |
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17 | Para mayor información sobre los términos de la licencia ver el archivo |
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18 | llamado "gpl-2.0.txt" en ingles. |
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19 | */ |
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20 | |
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21 | package ve.gob.cenditel.tibisaymovil; |
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22 | |
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23 | import java.io.FileNotFoundException; |
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24 | import java.io.IOException; |
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25 | import java.io.InputStream; |
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26 | import java.security.KeyStore; |
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27 | import java.security.KeyStore.PrivateKeyEntry; |
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28 | import java.security.KeyStoreException; |
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29 | import java.security.NoSuchAlgorithmException; |
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30 | import java.security.PrivateKey; |
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31 | import java.security.cert.Certificate; |
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32 | import java.security.cert.CertificateException; |
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33 | import java.security.cert.X509Certificate; |
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34 | import java.util.Enumeration; |
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35 | |
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36 | |
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37 | import android.app.Activity; |
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38 | import android.content.Context; |
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39 | import android.content.DialogInterface; |
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40 | import android.net.Uri; |
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41 | import android.util.Log; |
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42 | import android.view.View; |
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43 | import android.widget.ListView; |
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44 | import android.widget.Toast; |
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45 | |
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46 | public class DirectKeyChain { |
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47 | |
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48 | private static final long serialVersionUID = 5677500714263795351L; |
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49 | |
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50 | private static final String keyStoreType = "BCPKCS12"; |
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51 | static final String keyStoreFilename = ".keystore"; |
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52 | private static KeyStore keystore = null; |
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53 | private static String password = null; |
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54 | |
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55 | |
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56 | private static DirectKeyChain theInstance; |
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57 | |
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58 | private Activity master; |
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59 | |
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60 | private boolean buttonsKeyStoreStatus; |
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61 | |
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62 | public boolean isButtonsKeyStoreStatus() { |
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63 | return buttonsKeyStoreStatus; |
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64 | } |
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65 | |
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66 | public void setButtonsKeyStoreStatus(boolean buttonsKeyStoreStatus) { |
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67 | this.buttonsKeyStoreStatus = buttonsKeyStoreStatus; |
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68 | } |
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69 | |
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70 | |
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71 | private ListView listView; |
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72 | |
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73 | public DirectCertificateAdapter adapter; |
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74 | |
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75 | // private MainBarClickListener mainbar; |
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76 | |
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77 | private DirectKeyChain() { |
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78 | } |
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79 | |
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80 | private DirectKeyChain(Activity master) { |
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81 | this.master=master; |
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82 | } |
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83 | |
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84 | public void setMasterActivity(Activity master){this.master=master;} |
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85 | |
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86 | |
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87 | public static DirectKeyChain getInstance() { |
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88 | |
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89 | if (DirectKeyChain.theInstance == null) { |
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90 | |
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91 | DirectKeyChain.theInstance = new DirectKeyChain(); |
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92 | } |
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93 | return (DirectKeyChain) DirectKeyChain.theInstance; |
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94 | } |
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95 | |
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96 | public void choosePrivateKeyAlias() { |
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97 | |
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98 | if (!keystoreExists()) { |
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99 | createKeystoreAndChoosePrivateKeyAlias(); |
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100 | } else { |
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101 | if (DirectKeyChain.keystore == null) { |
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102 | openKeystoreAndChoosePrivateKeyAlias(); |
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103 | } else { |
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104 | startKeyChainActivityAndChoosePrivateKeyAlias(); |
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105 | } |
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106 | } |
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107 | |
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108 | } |
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109 | |
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110 | public void openOrCreateKeyAlias() { |
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111 | |
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112 | DirectKeyChain.keystore=null; |
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113 | choosePrivateKeyAlias(); |
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114 | |
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115 | } |
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116 | |
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117 | public X509Certificate[] getCertificateChain(String alias) |
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118 | throws KeystoreException { |
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119 | |
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120 | checkKeystoreOpen(); |
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121 | try { |
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122 | KeyStore trusted = getKeystore(); |
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123 | Certificate[] chain = trusted.getCertificateChain(alias); |
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124 | X509Certificate[] result = new X509Certificate[chain.length]; |
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125 | for(int i = 0; i < chain.length; i++) { |
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126 | // Casting chain to X509Certificate[] seems to be not enough |
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127 | result[i] = (X509Certificate) chain[i]; |
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128 | } |
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129 | return result; |
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130 | } catch (Exception e) { |
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131 | throw new KeystoreException(e); |
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132 | } |
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133 | } |
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134 | |
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135 | public PrivateKey getPrivateKey(String alias) |
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136 | throws KeystoreException { |
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137 | |
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138 | checkKeystoreOpen(); |
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139 | try { |
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140 | KeyStore trusted = getKeystore(); |
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141 | return ((PrivateKeyEntry) trusted.getEntry(alias, null)).getPrivateKey(); |
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142 | } catch (Exception e) { |
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143 | throw new KeystoreException(e); |
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144 | } |
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145 | } |
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146 | |
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147 | |
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148 | |
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149 | public int deleteCertificate(String alias) throws KeystoreException{ |
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150 | |
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151 | try { |
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152 | KeyStore trusted = getKeystore(); |
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153 | trusted.deleteEntry(alias); |
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154 | } catch (Exception e) { |
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155 | throw new KeystoreException(e); |
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156 | } |
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157 | |
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158 | if (this.adapter!=null)this.adapter.notifyDataSetChanged(); |
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159 | return 0; |
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160 | |
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161 | } |
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162 | |
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163 | |
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164 | |
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165 | public Enumeration<String> getAliases() |
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166 | throws KeystoreException { |
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167 | |
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168 | try { |
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169 | KeyStore trusted = getKeystore(); |
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170 | return new PrivateKeyEnumeration(trusted); |
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171 | } catch (KeyStoreException e) { |
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172 | throw new KeystoreException(e); |
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173 | } |
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174 | } |
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175 | |
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176 | public int importCertificate(Uri file, String password) |
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177 | throws KeystoreException { |
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178 | |
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179 | try { |
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180 | KeyStore trusted = getKeystore(); |
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181 | KeyStore p12 = KeyStore.getInstance("PKCS12"); |
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182 | InputStream stream = this.master.getContentResolver().openInputStream(file); |
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183 | p12.load(stream, password.toCharArray()); |
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184 | stream.close(); |
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185 | Enumeration<String> aliases = p12.aliases(); |
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186 | int imported = 0; |
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187 | while (aliases.hasMoreElements()) { |
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188 | String alias = aliases.nextElement(); |
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189 | if (p12.isKeyEntry(alias)) { |
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190 | Certificate[] chain = p12.getCertificateChain(alias); |
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191 | for (Certificate cert : chain) { |
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192 | if (!(cert instanceof X509Certificate)) { |
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193 | throw new KeyStoreException(); |
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194 | } |
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195 | } |
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196 | // TODO allow to import with a diferent alias. Warn if alias already exists |
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197 | trusted.setKeyEntry(alias, p12.getKey(alias, null), null, chain); |
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198 | imported++; |
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199 | } |
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200 | } |
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201 | return imported; |
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202 | } catch (Exception e) { |
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203 | IncorrectPasswordException.checkException(e); |
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204 | throw new KeystoreException(e); |
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205 | } |
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206 | } |
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207 | |
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208 | public void saveKeystore() |
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209 | throws KeystoreException, OutOfSpaceError { |
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210 | |
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211 | saveKeystore(DirectKeyChain.password); |
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212 | } |
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213 | |
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214 | public void saveKeystore(String password) |
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215 | throws KeystoreException, OutOfSpaceError { |
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216 | |
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217 | try { |
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218 | KeyStore trusted = getKeystore(); |
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219 | trusted.store( |
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220 | this.master.openFileOutput(DirectKeyChain.keyStoreFilename, Context.MODE_PRIVATE), |
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221 | password.toCharArray()); |
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222 | DirectKeyChain.password = password; |
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223 | } catch (Exception e) { |
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224 | FsUtils.checkOutOfSpace(e, false); |
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225 | throw new KeystoreException(e); |
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226 | } |
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227 | } |
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228 | |
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229 | private KeyStore newKeystore() |
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230 | throws KeyStoreException, NoSuchAlgorithmException, CertificateException, IOException { |
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231 | |
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232 | DirectKeyChain.keystore = KeyStore.getInstance(DirectKeyChain.keyStoreType); |
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233 | DirectKeyChain.keystore.load(null); |
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234 | return DirectKeyChain.keystore; |
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235 | } |
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236 | |
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237 | private KeyStore getKeystore() |
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238 | throws KeystoreException { |
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239 | |
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240 | return getKeystore(DirectKeyChain.password); |
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241 | } |
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242 | |
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243 | private KeyStore getKeystore(String password) |
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244 | throws KeystoreException { |
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245 | |
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246 | if (DirectKeyChain.keystore == null) { |
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247 | try { |
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248 | if (keystoreExists()) { |
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249 | DirectKeyChain.keystore = KeyStore.getInstance(DirectKeyChain.keyStoreType); |
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250 | DirectKeyChain.keystore.load(this.master.openFileInput( |
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251 | DirectKeyChain.keyStoreFilename), password.toCharArray()); |
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252 | } else { |
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253 | newKeystore(); |
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254 | } |
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255 | DirectKeyChain.password = password; |
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256 | } catch (Exception e) { |
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257 | DirectKeyChain.password=null; |
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258 | DirectKeyChain.keystore=null; |
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259 | if (IncorrectPasswordException.checkException(e)) { |
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260 | |
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261 | throw new IncorrectPasswordException(e); |
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262 | } |
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263 | throw new KeystoreException(e); |
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264 | } |
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265 | } |
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266 | |
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267 | return DirectKeyChain.keystore; |
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268 | } |
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269 | |
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270 | private KeyStore reloadKeyStore(){ |
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271 | //TODO |
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272 | if (DirectKeyChain.keystore!=null && DirectKeyChain.password!=null){ |
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273 | try { |
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274 | DirectKeyChain.keystore = KeyStore.getInstance(DirectKeyChain.keyStoreType); |
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275 | DirectKeyChain.keystore.load(this.master.openFileInput( |
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276 | DirectKeyChain.keyStoreFilename), password.toCharArray()); |
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277 | } catch (KeyStoreException e) {} |
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278 | catch (CertificateException e) {} |
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279 | catch (FileNotFoundException e) {} |
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280 | catch (NoSuchAlgorithmException e) {} |
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281 | catch (IOException e) {} |
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282 | |
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283 | |
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284 | } |
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285 | else{} |
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286 | return DirectKeyChain.keystore; |
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287 | |
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288 | } |
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289 | |
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290 | |
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291 | private boolean keystoreExists() { |
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292 | |
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293 | return this.master.getFileStreamPath(DirectKeyChain.keyStoreFilename).exists(); |
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294 | } |
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295 | |
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296 | private void checkKeystoreOpen() throws KeystoreException { |
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297 | if (DirectKeyChain.keystore == null) { |
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298 | throw new KeystoreException("Neeed to open the keystore first"); |
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299 | } |
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300 | } |
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301 | |
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302 | public void createKeystoreAndChoosePrivateKeyAlias() { |
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303 | final PasswordConfirmationDialog dialog = |
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304 | new PasswordConfirmationDialog(this.master, R.string.keystore_create_password); |
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305 | dialog.setAcceptListener(new DirectKeyChainAcceptListener(dialog, this.master)); |
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306 | |
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307 | dialog.show(); |
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308 | } |
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309 | |
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310 | private void openKeystoreAndChoosePrivateKeyAlias() { |
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311 | |
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312 | final PasswordDialog dialog = |
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313 | new PasswordDialog(this.master, R.string.keystore_password, true); |
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314 | dialog.setAcceptListener(new DirectKeyChainOpenListener(dialog, this.master)); |
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315 | dialog.setRecreateListener(new DialogInterface.OnClickListener() { |
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316 | |
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317 | @Override |
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318 | public void onClick(DialogInterface dialog, int which) { |
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319 | createKeystoreAndChoosePrivateKeyAlias(); |
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320 | } |
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321 | }); |
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322 | dialog.show(); |
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323 | } |
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324 | |
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325 | |
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326 | |
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327 | private void startKeyChainActivityAndChoosePrivateKeyAlias() { |
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328 | |
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329 | |
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330 | if (DirectKeyChain.password==null) |
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331 | this.choosePrivateKeyAlias(); |
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332 | DirectKeyChain.this.buttonsKeyStoreStatus = true; |
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333 | |
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334 | DirectKeyChain.this.refreshAdapter(); |
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335 | /*Intent intent = new Intent(this.master, KeyChainActivity.class); |
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336 | this.master.startActivityForResult(intent, ActivityResult.PRIVATE_KEY_ALIAS);*/ |
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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 | public ListView getListView() { |
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342 | return listView; |
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343 | } |
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344 | |
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345 | public void setListView(ListView listView) { |
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346 | this.listView = listView; |
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347 | } |
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348 | |
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349 | public void refreshAdapter(){ |
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350 | |
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351 | |
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352 | try { |
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353 | this.reloadKeyStore(); |
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354 | this.adapter = new DirectCertificateAdapter(DirectKeyChain.this, this.master); |
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355 | this.getListView().setAdapter(DirectKeyChain.this.adapter); |
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356 | |
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357 | } catch (KeystoreException e) { |
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358 | //DirectKeyChain.password=null; |
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359 | //DirectKeyChain.keystore=null; |
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360 | } |
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361 | |
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362 | |
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363 | } |
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364 | |
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365 | |
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366 | public class DirectKeyChainAcceptListener implements View.OnClickListener { |
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367 | |
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368 | private PasswordConfirmationDialog dialog; |
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369 | private Context context; |
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370 | |
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371 | public DirectKeyChainAcceptListener(PasswordConfirmationDialog dialog, Context context){ |
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372 | this.dialog=dialog; |
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373 | this.context=context; |
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374 | } |
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375 | |
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376 | @Override |
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377 | public void onClick(View v) { |
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378 | String newPassword = dialog.getPassword(); |
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379 | dialog.dismiss(); |
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380 | try { |
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381 | |
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382 | DirectKeyChain.this.newKeystore(); |
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383 | DirectKeyChain.this.saveKeystore(newPassword); |
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384 | DirectKeyChain.this.startKeyChainActivityAndChoosePrivateKeyAlias(); |
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385 | |
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386 | /******************** OJO********************/ |
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387 | // En este punto se muestran los elementos dentro del keystore |
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388 | /*********************************************/ |
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389 | Log.i("DEBUG", "Mostrar elementos1"); |
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390 | |
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391 | |
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392 | // if (DirectKeyChain.this.mainbar!=null) |
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393 | // DirectKeyChain.this.mainbar.prepareDisplayedChild(1); |
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394 | } catch (OutOfSpaceError e) { |
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395 | Toast.makeText(DirectKeyChain.this.master, R.string.error_no_space, Toast.LENGTH_LONG).show(); |
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396 | } catch (Exception e) { |
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397 | Toast.makeText(DirectKeyChain.this.master, R.string.error_unknown, Toast.LENGTH_LONG).show(); |
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398 | // throw new RuntimeException(e); |
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399 | } |
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400 | |
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401 | /*try { |
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402 | DirectKeyChain.this.getListView().setAdapter(new DirectCertificateAdapter(DirectKeyChain.this, this.context)); |
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403 | } catch (KeystoreException e) { |
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404 | |
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405 | }*/ |
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406 | DirectKeyChain.this.refreshAdapter(); |
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407 | } |
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408 | } |
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409 | |
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410 | |
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411 | public class DirectKeyChainOpenListener implements View.OnClickListener { |
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412 | |
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413 | private PasswordDialog dialog; |
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414 | private Context context; |
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415 | |
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416 | public DirectKeyChainOpenListener(PasswordDialog dialog, Context context){ |
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417 | this.dialog=dialog; |
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418 | this.context=context; |
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419 | } |
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420 | |
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421 | @Override |
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422 | public void onClick(View v) { |
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423 | String password = dialog.getPassword(); |
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424 | boolean ok = false; |
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425 | try { |
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426 | getKeystore(password); |
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427 | ok = true; |
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428 | } catch (IncorrectPasswordException e) { |
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429 | ok = false; |
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430 | DirectKeyChain.password=null; |
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431 | //DirectKeyChain.keystore=null; |
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432 | |
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433 | dialog.retry(); |
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434 | } catch (KeystoreException e) { |
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435 | //throw new RuntimeException(e); |
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436 | DirectKeyChain.password=null; |
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437 | DirectKeyChain.keystore=null; |
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438 | } |
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439 | if (ok) { |
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440 | DirectKeyChain.this.buttonsKeyStoreStatus = true; |
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441 | Log.i("DEBUG", "Mostrar elementos2"); |
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442 | dialog.dismiss(); |
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443 | startKeyChainActivityAndChoosePrivateKeyAlias(); |
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444 | } |
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445 | |
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446 | |
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447 | |
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448 | /*try { |
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449 | if (DirectKeyChain.this.adapter==null){ |
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450 | DirectKeyChain.this.adapter = new DirectCertificateAdapter(DirectKeyChain.this, this.context); |
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451 | DirectKeyChain.this.getListView().setAdapter(DirectKeyChain.this.adapter); |
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452 | } |
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453 | else{ |
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454 | DirectKeyChain.this.adapter.notifyDataSetChanged(); |
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455 | } |
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456 | } catch (KeystoreException e) { |
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457 | |
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458 | }*/ |
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459 | DirectKeyChain.this.refreshAdapter(); |
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460 | |
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461 | } |
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462 | } |
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463 | |
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464 | |
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465 | private static class PrivateKeyEnumeration implements Enumeration<String> { |
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466 | |
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467 | private KeyStore keystore; |
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468 | private Enumeration<String> aliases; |
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469 | private String next; |
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470 | |
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471 | public PrivateKeyEnumeration(KeyStore keystore) throws KeyStoreException { |
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472 | |
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473 | this.keystore = keystore; |
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474 | this.aliases = keystore.aliases(); |
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475 | this.next = lookForNextPrivateKeyAlias(); |
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476 | } |
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477 | |
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478 | private String lookForNextPrivateKeyAlias() throws KeyStoreException { |
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479 | |
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480 | while (this.aliases.hasMoreElements()) { |
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481 | String alias = this.aliases.nextElement(); |
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482 | if (this.keystore.entryInstanceOf(alias, KeyStore.PrivateKeyEntry.class)) { |
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483 | return alias; |
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484 | } |
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485 | } |
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486 | return null; |
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487 | } |
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488 | |
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489 | @Override |
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490 | public boolean hasMoreElements() { |
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491 | |
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492 | return this.next != null; |
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493 | } |
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494 | |
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495 | @Override |
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496 | public String nextElement() { |
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497 | |
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498 | String element = this.next; |
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499 | try { |
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500 | this.next = lookForNextPrivateKeyAlias(); |
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501 | } catch (KeyStoreException e) { |
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502 | //throw new RuntimeException(e); |
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503 | } |
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504 | return element; |
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505 | } |
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506 | } |
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507 | |
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508 | |
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509 | public boolean isPasswordCorrect() { |
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510 | return (DirectKeyChain.password!=null); |
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511 | } |
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512 | } |
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