summaryrefslogtreecommitdiff
path: root/src/de/blinkt/openvpn/ConfigConverter.java
blob: ae0385dad48647651b08d5c652de46b12f114504 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440

package de.blinkt.openvpn;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.List;
import java.util.Vector;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.app.ListActivity;
import android.content.ActivityNotFoundException;
import android.content.Intent;
import android.os.Bundle;
import android.os.Environment;
import android.security.KeyChain;
import android.security.KeyChainAliasCallback;
import android.util.Base64;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.CheckBox;
import de.blinkt.openvpn.core.ConfigParser;
import de.blinkt.openvpn.core.ConfigParser.ConfigParseError;
import de.blinkt.openvpn.core.ProfileManager;

public class ConfigConverter extends ListActivity {

	public static final String IMPORT_PROFILE = "de.blinkt.openvpn.IMPORT_PROFILE";

	private VpnProfile mResult;
	private ArrayAdapter<String> mArrayAdapter;

	private List<String> mPathsegments;

	private String mAliasName=null;

	private int RESULT_INSTALLPKCS12 = 7;

	private String mPossibleName=null;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.config_converter);
	}



	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		if(item.getItemId()==R.id.cancel){
			setResult(Activity.RESULT_CANCELED);
			finish();
		} else if(item.getItemId()==R.id.ok) {
			if(mResult==null) {
				log("Importing the config had error, cannot save it");
				return true;
			}

			Intent in = installPKCS12();

			if(in != null)
				startActivityForResult(in, RESULT_INSTALLPKCS12);
			else
				saveProfile();

			return true;
		}

		return super.onOptionsItemSelected(item);

	}

	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		if(requestCode==RESULT_INSTALLPKCS12) {
			if(resultCode==Activity.RESULT_OK) {
				showCertDialog();
			}
		}

		super.onActivityResult(requestCode, resultCode, data);
	}

	private void saveProfile() {
		Intent result = new Intent();
		ProfileManager vpl = ProfileManager.getInstance(this);

		setUniqueProfileName(vpl);
		vpl.addProfile(mResult);
		vpl.saveProfile(this, mResult);
		vpl.saveProfileList(this);
		result.putExtra(VpnProfile.EXTRA_PROFILEUUID,mResult.getUUID().toString());
		setResult(Activity.RESULT_OK, result);
		finish();
	}

	public void showCertDialog () {
		try	{
			KeyChain.choosePrivateKeyAlias(this,
					new KeyChainAliasCallback() {

				public void alias(String alias) {
					// Credential alias selected.  Remember the alias selection for future use.
					mResult.mAlias=alias;
					saveProfile();
				}


			},
			new String[] {"RSA"}, // List of acceptable key types. null for any
			null,                        // issuer, null for any
			mResult.mServerName,      // host name of server requesting the cert, null if unavailable
			-1,                         // port of server requesting the cert, -1 if unavailable
			mAliasName);                       // alias to preselect, null if unavailable
		} catch (ActivityNotFoundException anf) {
			Builder ab = new AlertDialog.Builder(this);
			ab.setTitle(R.string.broken_image_cert_title);
			ab.setMessage(R.string.broken_image_cert);
			ab.setPositiveButton(android.R.string.ok, null);
			ab.show();
		}
	}


	private Intent installPKCS12() {
		
		if(!((CheckBox)findViewById(R.id.importpkcs12)).isChecked()) {
			setAuthTypeToEmbeddedPKCS12();
			return null;
			
		}
		String pkcs12datastr = mResult.mPKCS12Filename;
		if(pkcs12datastr!=null && pkcs12datastr.startsWith(VpnProfile.INLINE_TAG)) {
			Intent inkeyintent = KeyChain.createInstallIntent();
			
			pkcs12datastr= pkcs12datastr.substring(VpnProfile.INLINE_TAG.length());
			
			
			byte[] pkcs12data = Base64.decode(pkcs12datastr, Base64.DEFAULT);


			inkeyintent.putExtra(KeyChain.EXTRA_PKCS12,pkcs12data );

			if(mAliasName.equals(""))
				mAliasName=null;

			if(mAliasName!=null){
				inkeyintent.putExtra(KeyChain.EXTRA_NAME, mAliasName);
			}
			return inkeyintent;

		}
		return null;
	}



	private void setAuthTypeToEmbeddedPKCS12() {
		if(mResult.mPKCS12Filename!=null && mResult.mPKCS12Filename.startsWith(VpnProfile.INLINE_TAG)) {
			if(mResult.mAuthenticationType==VpnProfile.TYPE_USERPASS_KEYSTORE)
				mResult.mAuthenticationType=VpnProfile.TYPE_USERPASS_PKCS12;
			
			if(mResult.mAuthenticationType==VpnProfile.TYPE_KEYSTORE)
				mResult.mAuthenticationType=VpnProfile.TYPE_PKCS12;
			
		}
	}





	private void setUniqueProfileName(ProfileManager vpl) {
		int i=0;

		String newname = mPossibleName;

		// 	Default to 
		if(mResult.mName!=null && !ConfigParser.CONVERTED_PROFILE.equals(mResult.mName))
			newname=mResult.mName;
			
		while(vpl.getProfileByName(newname)!=null) {
			i++;
			if(i==1)
				newname = getString(R.string.converted_profile);
			else
				newname = getString(R.string.converted_profile_i,i);
		}

		mResult.mName=newname;
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		MenuInflater inflater = getMenuInflater();
		inflater.inflate(R.menu.import_menu, menu);
		return true;
	}
	
	private String embedFile(String filename) {
		return embedFile(filename, false);		
	}

	private String embedFile(String filename, boolean base64encode)
	{
		if(filename==null)
			return null;

		// Already embedded, nothing to do
		if(filename.startsWith(VpnProfile.INLINE_TAG))
			return filename;

		File possibleFile = findFile(filename);
		if(possibleFile==null)
			return filename;
		else
			return readFileContent(possibleFile,base64encode);

	}

	private File findFile(String filename) {
		File foundfile =findFileRaw(filename);
		
		if (foundfile==null && filename!=null && !filename.equals(""))
			log(R.string.import_could_not_open,filename);

		return foundfile;
	}



	private File findFileRaw(String filename)
	{
		if(filename == null || filename.equals(""))
			return null;

		// Try diffent path relative to /mnt/sdcard
		File sdcard = Environment.getExternalStorageDirectory();
		File root = new File("/");

		Vector<File> dirlist = new Vector<File>();

		for(int i=mPathsegments.size()-1;i >=0 ;i--){
			String path = "";
			for (int j = 0;j<=i;j++) {
				path += "/" + mPathsegments.get(j);
			}
			dirlist.add(new File(path));
		}
		dirlist.add(sdcard);
		dirlist.add(root);


		String[] fileparts = filename.split("/");
		for(File rootdir:dirlist){
			String suffix="";
			for(int i=fileparts.length-1; i >=0;i--) {
				if(i==fileparts.length-1)
					suffix = fileparts[i];
				else
					suffix = fileparts[i] + "/" + suffix;

				File possibleFile = new File(rootdir,suffix);
				if(!possibleFile.canRead())
					continue;

				// read the file inline
				return possibleFile;

			}
		}
		return null;
	}

	String readFileContent(File possibleFile, boolean base64encode) {
		byte [] filedata;
		try {
			filedata = readBytesFromFile(possibleFile);
		} catch (IOException e) {
			log(e.getLocalizedMessage());
			return null;
		}
		
		String data;
		if(base64encode) {
			data = Base64.encodeToString(filedata, Base64.DEFAULT);
		} else {
			data = new String(filedata);

		}
		return VpnProfile.INLINE_TAG + data;
		
	}


	private byte[] readBytesFromFile(File file) throws IOException {
		InputStream input = new FileInputStream(file);

		long len= file.length();


		// Create the byte array to hold the data
		byte[] bytes = new byte[(int) len];

		// Read in the bytes
		int offset = 0;
		int bytesRead = 0;
		while (offset < bytes.length
				&& (bytesRead=input.read(bytes, offset, bytes.length-offset)) >= 0) {
			offset += bytesRead;
		}

		input.close();
		return bytes;
	}

	void embedFiles() {
		// This where I would like to have a c++ style
		// void embedFile(std::string & option)

		if (mResult.mPKCS12Filename!=null) {
			File pkcs12file = findFileRaw(mResult.mPKCS12Filename);
			if(pkcs12file!=null) {
				mAliasName = pkcs12file.getName().replace(".p12", "");
			} else {
				mAliasName = "Imported PKCS12";
			}
		}
			
		
		mResult.mCaFilename = embedFile(mResult.mCaFilename);
		mResult.mClientCertFilename = embedFile(mResult.mClientCertFilename);
		mResult.mClientKeyFilename = embedFile(mResult.mClientKeyFilename);
		mResult.mTLSAuthFilename = embedFile(mResult.mTLSAuthFilename);
		mResult.mPKCS12Filename = embedFile(mResult.mPKCS12Filename,true);
		

		if(mResult.mUsername == null && mResult.mPassword != null ){
			String data =embedFile(mResult.mPassword);
			ConfigParser.useEmbbedUserAuth(mResult, data);			
		}
	}


	@Override
	protected void onStart() {
		super.onStart();

		mArrayAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1);
		getListView().setAdapter(mArrayAdapter);
		final android.content.Intent intent = getIntent ();

		if (intent != null)
		{
			final android.net.Uri data = intent.getData ();
			if (data != null)
			{
				//log(R.string.import_experimental);
				log(R.string.importing_config,data.toString());
				try {
					if(data.getScheme().equals("file")) {
						mPossibleName = data.getLastPathSegment();
						if(mPossibleName!=null){
							mPossibleName =mPossibleName.replace(".ovpn", "");
							mPossibleName =mPossibleName.replace(".conf", "");
						}
					}
					InputStream is = getContentResolver().openInputStream(data);
					mPathsegments = data.getPathSegments();

					doImport(is);
				} catch (FileNotFoundException e) {
					log(R.string.import_content_resolve_error);
				}
			} 
		} 

		return;
	}

	private void log(String logmessage) {
		mArrayAdapter.add(logmessage);
	}

	private void doImport(InputStream is) {
		ConfigParser cp = new ConfigParser();
		try {
			InputStreamReader isr = new InputStreamReader(is);

			cp.parseConfig(isr);
			VpnProfile vp = cp.convertProfile();
			mResult = vp;
			embedFiles();
			displayWarnings();
			log(R.string.import_done);
			return;

		} catch (IOException e) {
			log(R.string.error_reading_config_file);
			log(e.getLocalizedMessage());
		} catch (ConfigParseError e) {
			log(R.string.error_reading_config_file);
			log(e.getLocalizedMessage());			
		}
		mResult=null;

	}

	private void displayWarnings() {
		if(mResult.mUseCustomConfig) {
			log(R.string.import_warning_custom_options);
			String copt = mResult.mCustomConfigOptions;
			if(copt.startsWith("#")) {
				int until = copt.indexOf('\n');
				copt = copt.substring(until+1);
			}

			log(copt);
		}

		if(mResult.mAuthenticationType==VpnProfile.TYPE_KEYSTORE ||
				mResult.mAuthenticationType == VpnProfile.TYPE_USERPASS_KEYSTORE) {
			findViewById(R.id.importpkcs12).setVisibility(View.VISIBLE);
		}

	}

	private void log(int ressourceId, Object... formatArgs) {
		log(getString(ressourceId,formatArgs));
	}
}