1 | /* |
---|
2 | Tibisay Movil |
---|
3 | |
---|
4 | Copyright (C) 2013 Antonio Araujo (aaraujo@cenditel.gob.ve), Jose Ruiz |
---|
5 | (jruiz@cenditel.gob.ve), Fundacion Centro Nacional de Desarrollo e |
---|
6 | Investigacion en Tecnologias Libres - CENDITEL. |
---|
7 | |
---|
8 | La Fundación CENDITEL concede permiso para usar, copiar, distribuir y/o |
---|
9 | modificar este programa, reconociendo el derecho que la humanidad posee al |
---|
10 | libre acceso al conocimiento, bajo los términos de la licencia de software |
---|
11 | GPL versión 2.0 de la Free Software Foundation. |
---|
12 | |
---|
13 | Este programa se distribuye con la esperanza de que sea util, pero SIN |
---|
14 | NINGUNA GARANTIA; tampoco las implicitas garantias de MERCANTILIDAD o |
---|
15 | ADECUACION A UN PROPOSITO PARTICULAR. |
---|
16 | |
---|
17 | Para mayor información sobre los términos de la licencia ver el archivo |
---|
18 | llamado "gpl-2.0.txt" en ingles. |
---|
19 | */ |
---|
20 | |
---|
21 | package ve.gob.cenditel.tibisaymovil; |
---|
22 | |
---|
23 | import java.io.FileNotFoundException; |
---|
24 | import java.io.IOException; |
---|
25 | import java.io.InputStream; |
---|
26 | import java.security.KeyStore; |
---|
27 | import java.security.KeyStore.PrivateKeyEntry; |
---|
28 | import java.security.KeyStoreException; |
---|
29 | import java.security.NoSuchAlgorithmException; |
---|
30 | import java.security.PrivateKey; |
---|
31 | import java.security.cert.Certificate; |
---|
32 | import java.security.cert.CertificateException; |
---|
33 | import java.security.cert.X509Certificate; |
---|
34 | import java.util.Collections; |
---|
35 | import java.util.Enumeration; |
---|
36 | import java.util.List; |
---|
37 | |
---|
38 | |
---|
39 | import android.content.Context; |
---|
40 | import android.content.DialogInterface; |
---|
41 | import android.content.Intent; |
---|
42 | import android.net.Uri; |
---|
43 | import android.view.View; |
---|
44 | import android.view.View.OnClickListener; |
---|
45 | import android.widget.Toast; |
---|
46 | |
---|
47 | public class CustomKeyChain extends KeyChainStrategy { |
---|
48 | |
---|
49 | private static final long serialVersionUID = 5677500714263795951L; |
---|
50 | |
---|
51 | private static final String keyStoreType = "BCPKCS12"; |
---|
52 | private static final String keyStoreFilename = ".keystore"; |
---|
53 | private static KeyStore keystore = null; |
---|
54 | private static String password = null; |
---|
55 | |
---|
56 | private CustomKeyChain() {} |
---|
57 | |
---|
58 | public static CustomKeyChain getInstance() { |
---|
59 | |
---|
60 | if (KeyChainStrategy.theInstance == null) { |
---|
61 | |
---|
62 | KeyChainStrategy.theInstance = new CustomKeyChain(); |
---|
63 | } |
---|
64 | return (CustomKeyChain) KeyChainStrategy.theInstance; |
---|
65 | } |
---|
66 | |
---|
67 | @Override |
---|
68 | public void choosePrivateKeyAlias() { |
---|
69 | |
---|
70 | this.keystore=null; |
---|
71 | |
---|
72 | /*if (!keystoreExists()) { |
---|
73 | createKeystoreAndChoosePrivateKeyAlias(); |
---|
74 | } else {*/ |
---|
75 | if (CustomKeyChain.keystore == null) { |
---|
76 | openKeystoreAndChoosePrivateKeyAlias(); |
---|
77 | } else { |
---|
78 | startKeyChainActivityAndChoosePrivateKeyAlias(); |
---|
79 | } |
---|
80 | //} |
---|
81 | } |
---|
82 | |
---|
83 | //May not be used |
---|
84 | @Override |
---|
85 | public void choosePrivateKeyList() { |
---|
86 | |
---|
87 | |
---|
88 | if (!keystoreExists()) { |
---|
89 | createKeystoreToSelect(); |
---|
90 | } else { |
---|
91 | if (CustomKeyChain.keystore == null) { |
---|
92 | openKeystoreToSelect(); |
---|
93 | } else { |
---|
94 | startKeyChainActivityToSelect(); |
---|
95 | } |
---|
96 | } |
---|
97 | } |
---|
98 | @Override |
---|
99 | public X509Certificate[] getCertificateChain(String alias) |
---|
100 | throws KeystoreException { |
---|
101 | |
---|
102 | checkKeystoreOpen(); |
---|
103 | try { |
---|
104 | KeyStore trusted = getKeystore(); |
---|
105 | Certificate[] chain = trusted.getCertificateChain(alias); |
---|
106 | X509Certificate[] result = new X509Certificate[chain.length]; |
---|
107 | for(int i = 0; i < chain.length; i++) { |
---|
108 | // Casting chain to X509Certificate[] seems to be not enough |
---|
109 | result[i] = (X509Certificate) chain[i]; |
---|
110 | } |
---|
111 | return result; |
---|
112 | } catch (Exception e) { |
---|
113 | throw new KeystoreException(e); |
---|
114 | } |
---|
115 | } |
---|
116 | |
---|
117 | @Override |
---|
118 | public PrivateKey getPrivateKey(String alias) |
---|
119 | throws KeystoreException { |
---|
120 | |
---|
121 | checkKeystoreOpen(); |
---|
122 | try { |
---|
123 | KeyStore trusted = getKeystore(); |
---|
124 | return ((PrivateKeyEntry) trusted.getEntry(alias, null)).getPrivateKey(); |
---|
125 | } catch (Exception e) { |
---|
126 | throw new KeystoreException(e); |
---|
127 | } |
---|
128 | } |
---|
129 | |
---|
130 | |
---|
131 | |
---|
132 | @Override |
---|
133 | public int deleteCertificate(String alias) throws KeystoreException{ |
---|
134 | |
---|
135 | try { |
---|
136 | KeyStore trusted = getKeystore(); |
---|
137 | trusted.deleteEntry(alias); |
---|
138 | } catch (Exception e) { |
---|
139 | throw new KeystoreException(e); |
---|
140 | } |
---|
141 | |
---|
142 | return 0; |
---|
143 | |
---|
144 | } |
---|
145 | |
---|
146 | |
---|
147 | |
---|
148 | public Enumeration<String> getAliases() |
---|
149 | throws KeystoreException { |
---|
150 | |
---|
151 | try { |
---|
152 | KeyStore trusted = getKeystore(); |
---|
153 | return new PrivateKeyEnumeration(trusted); |
---|
154 | } catch (KeyStoreException e) { |
---|
155 | throw new KeystoreException(e); |
---|
156 | } |
---|
157 | } |
---|
158 | |
---|
159 | public int importCertificate(Uri file, String password) |
---|
160 | throws KeystoreException { |
---|
161 | |
---|
162 | try { |
---|
163 | KeyStore trusted = getKeystore(); |
---|
164 | KeyStore p12 = KeyStore.getInstance("PKCS12"); |
---|
165 | InputStream stream = KeyChainStrategy.activity.getContentResolver().openInputStream(file); |
---|
166 | p12.load(stream, password.toCharArray()); |
---|
167 | stream.close(); |
---|
168 | Enumeration<String> aliases = p12.aliases(); |
---|
169 | int imported = 0; |
---|
170 | while (aliases.hasMoreElements()) { |
---|
171 | String alias = aliases.nextElement(); |
---|
172 | if (p12.isKeyEntry(alias)) { |
---|
173 | Certificate[] chain = p12.getCertificateChain(alias); |
---|
174 | for (Certificate cert : chain) { |
---|
175 | if (!(cert instanceof X509Certificate)) { |
---|
176 | throw new KeyStoreException(); |
---|
177 | } |
---|
178 | } |
---|
179 | // TODO allow to import with a diferent alias. Warn if alias already exists |
---|
180 | trusted.setKeyEntry(alias, p12.getKey(alias, null), null, chain); |
---|
181 | imported++; |
---|
182 | } |
---|
183 | } |
---|
184 | return imported; |
---|
185 | } catch (Exception e) { |
---|
186 | IncorrectPasswordException.checkException(e); |
---|
187 | throw new KeystoreException(e); |
---|
188 | } |
---|
189 | } |
---|
190 | |
---|
191 | public void saveKeystore() |
---|
192 | throws KeystoreException, OutOfSpaceError { |
---|
193 | |
---|
194 | saveKeystore(CustomKeyChain.password); |
---|
195 | } |
---|
196 | |
---|
197 | public void saveKeystore(String password) |
---|
198 | throws KeystoreException, OutOfSpaceError { |
---|
199 | |
---|
200 | try { |
---|
201 | KeyStore trusted = getKeystore(); |
---|
202 | trusted.store( |
---|
203 | KeyChainStrategy.activity.openFileOutput(CustomKeyChain.keyStoreFilename, Context.MODE_PRIVATE), |
---|
204 | password.toCharArray()); |
---|
205 | CustomKeyChain.password = password; |
---|
206 | } catch (Exception e) { |
---|
207 | FsUtils.checkOutOfSpace(e, false); |
---|
208 | throw new KeystoreException(e); |
---|
209 | } |
---|
210 | } |
---|
211 | |
---|
212 | public KeyStore reloadKeyStore(){ |
---|
213 | if (CustomKeyChain.keystore!=null && CustomKeyChain.password!=null){ |
---|
214 | try { |
---|
215 | CustomKeyChain.keystore = KeyStore.getInstance(CustomKeyChain.keyStoreType); |
---|
216 | CustomKeyChain.keystore.load(KeyChainStrategy.activity.openFileInput( |
---|
217 | CustomKeyChain.keyStoreFilename), password.toCharArray()); |
---|
218 | } catch (KeyStoreException e) {} |
---|
219 | catch (CertificateException e) {} |
---|
220 | catch (FileNotFoundException e) {} |
---|
221 | catch (NoSuchAlgorithmException e) {} |
---|
222 | catch (IOException e) {} |
---|
223 | |
---|
224 | |
---|
225 | } |
---|
226 | return CustomKeyChain.keystore; |
---|
227 | |
---|
228 | } |
---|
229 | |
---|
230 | |
---|
231 | |
---|
232 | |
---|
233 | private KeyStore newKeystore() |
---|
234 | throws KeyStoreException, NoSuchAlgorithmException, CertificateException, IOException { |
---|
235 | |
---|
236 | CustomKeyChain.keystore = KeyStore.getInstance(CustomKeyChain.keyStoreType); |
---|
237 | CustomKeyChain.keystore.load(null); |
---|
238 | return CustomKeyChain.keystore; |
---|
239 | } |
---|
240 | |
---|
241 | private KeyStore getKeystore() |
---|
242 | throws KeystoreException { |
---|
243 | |
---|
244 | return getKeystore(CustomKeyChain.password); |
---|
245 | } |
---|
246 | |
---|
247 | private KeyStore getKeystore(String password) |
---|
248 | throws KeystoreException { |
---|
249 | |
---|
250 | if (CustomKeyChain.keystore == null) { |
---|
251 | try { |
---|
252 | if (keystoreExists()) { |
---|
253 | CustomKeyChain.keystore = KeyStore.getInstance(CustomKeyChain.keyStoreType); |
---|
254 | CustomKeyChain.keystore.load(KeyChainStrategy.activity.openFileInput( |
---|
255 | CustomKeyChain.keyStoreFilename), password.toCharArray()); |
---|
256 | } else { |
---|
257 | newKeystore(); |
---|
258 | } |
---|
259 | CustomKeyChain.password = password; |
---|
260 | } catch (Exception e) { |
---|
261 | if (IncorrectPasswordException.checkException(e)) { |
---|
262 | CustomKeyChain.keystore = null; |
---|
263 | throw new IncorrectPasswordException(e); |
---|
264 | } |
---|
265 | throw new KeystoreException(e); |
---|
266 | } |
---|
267 | } |
---|
268 | return CustomKeyChain.keystore; |
---|
269 | } |
---|
270 | |
---|
271 | private boolean keystoreExists() { |
---|
272 | |
---|
273 | return KeyChainStrategy.activity.getFileStreamPath(CustomKeyChain.keyStoreFilename).exists(); |
---|
274 | } |
---|
275 | |
---|
276 | private void checkKeystoreOpen() throws KeystoreException { |
---|
277 | if (CustomKeyChain.keystore == null) { |
---|
278 | throw new KeystoreException("Neeed to open the keystore first"); |
---|
279 | } |
---|
280 | } |
---|
281 | |
---|
282 | private void createKeystoreAndChoosePrivateKeyAlias() { |
---|
283 | Toast.makeText(CustomKeyChain.activity, "createKeystoreAndChoosePrivateKeyAliasCustom", Toast.LENGTH_LONG).show(); |
---|
284 | |
---|
285 | final PasswordConfirmationDialog dialog = |
---|
286 | new PasswordConfirmationDialog(KeyChainStrategy.activity, R.string.keystore_create_password); |
---|
287 | dialog.setAcceptListener(new OnClickListener() { |
---|
288 | |
---|
289 | @Override |
---|
290 | public void onClick(View v) { |
---|
291 | String newPassword = dialog.getPassword(); |
---|
292 | dialog.dismiss(); |
---|
293 | try { |
---|
294 | newKeystore(); |
---|
295 | saveKeystore(newPassword); |
---|
296 | startKeyChainActivityAndChoosePrivateKeyAlias(); |
---|
297 | } catch (OutOfSpaceError e) { |
---|
298 | Toast.makeText(KeyChainStrategy.activity, R.string.error_no_space, Toast.LENGTH_LONG).show(); |
---|
299 | } catch (Exception e) { |
---|
300 | //throw new RuntimeException(e); |
---|
301 | Toast.makeText(KeyChainStrategy.activity, R.string.error_unknown, Toast.LENGTH_LONG).show(); |
---|
302 | |
---|
303 | } |
---|
304 | } |
---|
305 | }); |
---|
306 | dialog.show(); |
---|
307 | } |
---|
308 | |
---|
309 | private void openKeystoreAndChoosePrivateKeyAlias() { |
---|
310 | Toast.makeText(CustomKeyChain.activity, "openKeystoreAndChoosePrivateKeyAlias", Toast.LENGTH_LONG).show(); |
---|
311 | //TODO: Setting boolean to false instead of true. Disables "New KeyStore" option. |
---|
312 | final PasswordDialog dialog = |
---|
313 | new PasswordDialog(KeyChainStrategy.activity, R.string.keystore_password, false); |
---|
314 | dialog.setAcceptListener(new OnClickListener() { |
---|
315 | |
---|
316 | @Override |
---|
317 | public void onClick(View v) { |
---|
318 | |
---|
319 | String password = dialog.getPassword(); |
---|
320 | boolean ok = false; |
---|
321 | try { |
---|
322 | getKeystore(password); |
---|
323 | ok = true; |
---|
324 | |
---|
325 | } catch (IncorrectPasswordException e) { |
---|
326 | ok = false; |
---|
327 | dialog.retry(); |
---|
328 | } catch (KeystoreException e) { |
---|
329 | Toast.makeText(KeyChainStrategy.activity, R.string.error_unknown, Toast.LENGTH_LONG).show(); |
---|
330 | //throw new RuntimeException(e); |
---|
331 | } |
---|
332 | if (ok) { |
---|
333 | //Error #75046. No certificates installed. |
---|
334 | try { |
---|
335 | |
---|
336 | List<String> aliases = Collections.list(CustomKeyChain.this.getAliases()); |
---|
337 | if (aliases.size()>0){ |
---|
338 | dialog.dismiss(); |
---|
339 | startKeyChainActivityAndChoosePrivateKeyAlias(); |
---|
340 | }else{ |
---|
341 | Toast.makeText(KeyChainStrategy.activity, R.string.error_empty_or_null_certificates, Toast.LENGTH_LONG).show(); |
---|
342 | |
---|
343 | } |
---|
344 | } catch (KeystoreException e) { |
---|
345 | } |
---|
346 | |
---|
347 | } |
---|
348 | } |
---|
349 | }); |
---|
350 | dialog.setRecreateListener(new DialogInterface.OnClickListener() { |
---|
351 | |
---|
352 | @Override |
---|
353 | public void onClick(DialogInterface dialog, int which) { |
---|
354 | |
---|
355 | createKeystoreAndChoosePrivateKeyAlias(); |
---|
356 | } |
---|
357 | }); |
---|
358 | dialog.show(); |
---|
359 | } |
---|
360 | |
---|
361 | |
---|
362 | |
---|
363 | private void startKeyChainActivityAndChoosePrivateKeyAlias() { |
---|
364 | Toast.makeText(CustomKeyChain.activity, "startKeyChainActivityAndChoosePrivateKeyAlias", Toast.LENGTH_LONG).show(); |
---|
365 | |
---|
366 | Intent intent = new Intent(KeyChainStrategy.activity, KeyChainActivity.class); |
---|
367 | KeyChainStrategy.activity.startActivityForResult(intent, ActivityResult.PRIVATE_KEY_ALIAS); |
---|
368 | } |
---|
369 | |
---|
370 | private void startKeyChainActivityToSelect() { |
---|
371 | |
---|
372 | Intent intent = new Intent(KeyChainStrategy.activity, CertificateRepositoryActivity.class); |
---|
373 | |
---|
374 | KeyChainStrategy.activity.startActivityForResult(intent, ActivityResult.PRIVATE_KEY_ALIAS); |
---|
375 | } |
---|
376 | |
---|
377 | private void createKeystoreToSelect() { |
---|
378 | Toast.makeText(CustomKeyChain.activity, "createKeystoreToSelect", Toast.LENGTH_LONG).show(); |
---|
379 | final PasswordConfirmationDialog dialog = |
---|
380 | new PasswordConfirmationDialog(KeyChainStrategy.activity, R.string.keystore_create_password); |
---|
381 | dialog.setAcceptListener(new OnClickListener() { |
---|
382 | |
---|
383 | @Override |
---|
384 | public void onClick(View v) { |
---|
385 | String newPassword = dialog.getPassword(); |
---|
386 | dialog.dismiss(); |
---|
387 | try { |
---|
388 | newKeystore(); |
---|
389 | saveKeystore(newPassword); |
---|
390 | startKeyChainActivityToSelect(); |
---|
391 | } catch (OutOfSpaceError e) { |
---|
392 | Toast.makeText(KeyChainStrategy.activity, R.string.error_no_space, Toast.LENGTH_LONG).show(); |
---|
393 | } catch (Exception e) { |
---|
394 | Toast.makeText(KeyChainStrategy.activity, R.string.error_unknown, Toast.LENGTH_LONG).show(); |
---|
395 | // throw new RuntimeException(e); |
---|
396 | } |
---|
397 | } |
---|
398 | }); |
---|
399 | dialog.show(); |
---|
400 | } |
---|
401 | |
---|
402 | private void openKeystoreToSelect() { |
---|
403 | Toast.makeText(CustomKeyChain.activity, "openKeystoreToSelect", Toast.LENGTH_LONG).show(); |
---|
404 | //TODO: Setting boolean to false instead of true. Disables "New KeyStore" option. |
---|
405 | final PasswordDialog dialog = |
---|
406 | new PasswordDialog(KeyChainStrategy.activity, R.string.keystore_password, false); |
---|
407 | dialog.setAcceptListener(new OnClickListener() { |
---|
408 | |
---|
409 | @Override |
---|
410 | public void onClick(View v) { |
---|
411 | |
---|
412 | String password = dialog.getPassword(); |
---|
413 | boolean ok; |
---|
414 | try { |
---|
415 | getKeystore(password); |
---|
416 | ok = true; |
---|
417 | } catch (IncorrectPasswordException e) { |
---|
418 | ok = false; |
---|
419 | dialog.retry(); |
---|
420 | } catch (KeystoreException e) { |
---|
421 | Toast.makeText(KeyChainStrategy.activity, R.string.error_unknown, Toast.LENGTH_LONG).show(); |
---|
422 | //throw new RuntimeException(e); |
---|
423 | ok = false; |
---|
424 | } |
---|
425 | if (ok) { |
---|
426 | dialog.dismiss(); |
---|
427 | startKeyChainActivityToSelect(); |
---|
428 | } |
---|
429 | } |
---|
430 | }); |
---|
431 | dialog.setRecreateListener(new DialogInterface.OnClickListener() { |
---|
432 | |
---|
433 | @Override |
---|
434 | public void onClick(DialogInterface dialog, int which) { |
---|
435 | |
---|
436 | createKeystoreToSelect(); |
---|
437 | } |
---|
438 | }); |
---|
439 | dialog.show(); |
---|
440 | } |
---|
441 | |
---|
442 | private static class PrivateKeyEnumeration implements Enumeration<String> { |
---|
443 | |
---|
444 | private KeyStore keystore; |
---|
445 | private Enumeration<String> aliases; |
---|
446 | private String next; |
---|
447 | |
---|
448 | public PrivateKeyEnumeration(KeyStore keystore) throws KeyStoreException { |
---|
449 | |
---|
450 | this.keystore = keystore; |
---|
451 | this.aliases = keystore.aliases(); |
---|
452 | this.next = lookForNextPrivateKeyAlias(); |
---|
453 | } |
---|
454 | |
---|
455 | private String lookForNextPrivateKeyAlias() throws KeyStoreException { |
---|
456 | |
---|
457 | while (this.aliases.hasMoreElements()) { |
---|
458 | String alias = this.aliases.nextElement(); |
---|
459 | if (this.keystore.entryInstanceOf(alias, KeyStore.PrivateKeyEntry.class)) { |
---|
460 | return alias; |
---|
461 | } |
---|
462 | } |
---|
463 | return null; |
---|
464 | } |
---|
465 | |
---|
466 | @Override |
---|
467 | public boolean hasMoreElements() { |
---|
468 | |
---|
469 | return this.next != null; |
---|
470 | } |
---|
471 | |
---|
472 | @Override |
---|
473 | public String nextElement() { |
---|
474 | |
---|
475 | String element = this.next; |
---|
476 | try { |
---|
477 | this.next = lookForNextPrivateKeyAlias(); |
---|
478 | } catch (KeyStoreException e) { |
---|
479 | Toast.makeText(KeyChainStrategy.activity, R.string.error_unknown, Toast.LENGTH_LONG).show(); |
---|
480 | |
---|
481 | //throw new RuntimeException(e); |
---|
482 | } |
---|
483 | return element; |
---|
484 | } |
---|
485 | } |
---|
486 | |
---|
487 | |
---|
488 | } |
---|