sharpssh /SharpSSH/jsch/Util.cs

Language C# Lines 593
MD5 Hash 92c41af0755f96787a9f9d93f5ae55b2 Estimated Cost $12,501 (why?)
Repository https://bitbucket.org/sign42/sharpssh View Raw File View Project SPDX
  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
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
using System;
using System.Collections;
using System.Text;
using System.Threading;
using Tamir.SharpSsh.java;
using Tamir.SharpSsh.java.net;

namespace Tamir.SharpSsh.jsch
{
    /* -*-mode:java; c-basic-offset:2; -*- */
    /*
	Copyright (c) 2002,2003,2004 ymnk, JCraft,Inc. All rights reserved.

	Redistribution and use in source and binary forms, with or without
	modification, are permitted provided that the following conditions are met:

	  1. Redistributions of source code must retain the above copyright notice,
		 this list of conditions and the following disclaimer.

	  2. Redistributions in binary form must reproduce the above copyright 
		 notice, this list of conditions and the following disclaimer in 
		 the documentation and/or other materials provided with the distribution.

	  3. The names of the authors may not be used to endorse or promote products
		 derived from this software without specific prior written permission.

	THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
	INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
	FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
	INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
	INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
	OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
	LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
	NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
	EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*/


    public class Util
    {
        /// <summary>
        /// Converts a time_t to DateTime
        /// </summary>
        public static DateTime Time_T2DateTime(uint time_t)
        {
            long win32FileTime = 10000000*(long) time_t + 116444736000000000;
            return DateTime.FromFileTimeUtc(win32FileTime).ToLocalTime();
        }

        private static byte[] b64 = Encoding.Default.GetBytes("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=");

        private static byte val(byte foo)
        {
            if (foo == '=') return 0;
            for (int j = 0; j < b64.Length; j++)
            {
                if (foo == b64[j]) return (byte) j;
            }
            return 0;
        }

        internal static byte[] fromBase64(byte[] buf, int start, int length)
        {
            byte[] foo = new byte[length];
            int j = 0;
            int l = length;
            for (int i = start; i < start + length; i += 4)
            {
                foo[j] = (byte) ((val(buf[i]) << 2) | ((val(buf[i + 1]) & 0x30) >> 4));
                if (buf[i + 2] == (byte) '=')
                {
                    j++;
                    break;
                }
                foo[j + 1] = (byte) (((val(buf[i + 1]) & 0x0f) << 4) | ((val(buf[i + 2]) & 0x3c) >> 2));
                if (buf[i + 3] == (byte) '=')
                {
                    j += 2;
                    break;
                }
                foo[j + 2] = (byte) (((val(buf[i + 2]) & 0x03) << 6) | (val(buf[i + 3]) & 0x3f));
                j += 3;
            }
            byte[] bar = new byte[j];
            Array.Copy(foo, 0, bar, 0, j);
            return bar;
        }

        internal static byte[] toBase64(byte[] buf, int start, int length)
        {
            byte[] tmp = new byte[length*2];
            int i, j, k;

            int foo = (length/3)*3 + start;
            i = 0;
            for (j = start; j < foo; j += 3)
            {
                k = (buf[j] >> 2) & 0x3f;
                tmp[i++] = b64[k];
                k = (buf[j] & 0x03) << 4 | (buf[j + 1] >> 4) & 0x0f;
                tmp[i++] = b64[k];
                k = (buf[j + 1] & 0x0f) << 2 | (buf[j + 2] >> 6) & 0x03;
                tmp[i++] = b64[k];
                k = buf[j + 2] & 0x3f;
                tmp[i++] = b64[k];
            }

            foo = (start + length) - foo;
            if (foo == 1)
            {
                k = (buf[j] >> 2) & 0x3f;
                tmp[i++] = b64[k];
                k = ((buf[j] & 0x03) << 4) & 0x3f;
                tmp[i++] = b64[k];
                tmp[i++] = (byte) '=';
                tmp[i++] = (byte) '=';
            }
            else if (foo == 2)
            {
                k = (buf[j] >> 2) & 0x3f;
                tmp[i++] = b64[k];
                k = (buf[j] & 0x03) << 4 | (buf[j + 1] >> 4) & 0x0f;
                tmp[i++] = b64[k];
                k = ((buf[j + 1] & 0x0f) << 2) & 0x3f;
                tmp[i++] = b64[k];
                tmp[i++] = (byte) '=';
            }
            byte[] bar = new byte[i];
            Array.Copy(tmp, 0, bar, 0, i);
            return bar;

            //    return sun.misc.BASE64Encoder().encode(buf);
        }

        internal static String[] split(String foo, String split)
        {
            byte[] buf = getBytes(foo);
            ArrayList bar = new ArrayList();
            int start = 0;
            int index;
            while (true)
            {
                index = foo.IndexOf(split, start);
                if (index >= 0)
                {
                    bar.Add(getString(buf, start, index - start));
                    start = index + 1;
                    continue;
                }
                bar.Add(getString(buf, start, buf.Length - start));
                break;
            }
            String[] result = new String[bar.Count];
            for (int i = 0; i < result.Length; i++)
            {
                result[i] = (String) (bar[i]);
            }
            return result;
        }

        internal static bool glob(byte[] pattern, byte[] name)
        {
            return glob(pattern, 0, name, 0);
        }

        private static bool glob(byte[] pattern, int pattern_index,
                                 byte[] name, int name_index)
        {
            //System.out.println("glob: "+new String(pattern)+", "+new String(name));
            int patternlen = pattern.Length;
            if (patternlen == 0)
                return false;
            int namelen = name.Length;
            int i = pattern_index;
            int j = name_index;
            while (i < patternlen && j < namelen)
            {
                if (pattern[i] == '\\')
                {
                    if (i + 1 == patternlen)
                        return false;
                    i++;
                    if (pattern[i] != name[j]) return false;
                    i++;
                    j++;
                    continue;
                }
                if (pattern[i] == '*')
                {
                    if (patternlen == i + 1) return true;
                    i++;
                    byte foo = pattern[i];
                    while (j < namelen)
                    {
                        if (foo == name[j])
                        {
                            if (glob(pattern, i, name, j))
                            {
                                return true;
                            }
                        }
                        j++;
                    }
                    return false;
                    /*
					if(j==namelen) return false;
					i++; j++;
					continue;
					*/
                }
                if (pattern[i] == '?')
                {
                    i++;
                    j++;
                    continue;
                }
                if (pattern[i] != name[j]) return false;
                i++;
                j++;
                continue;
            }
            if (i == patternlen && j == namelen) return true;
            return false;
        }

        private static String[] chars = {
                                            "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f"
                                        };

        internal static String getFingerPrint(HASH hash, byte[] data)
        {
            try
            {
                hash.init();
                hash.update(data, 0, data.Length);
                byte[] foo = hash.digest();
                StringBuilder sb = new StringBuilder();
                uint bar;
                for (int i = 0; i < foo.Length; i++)
                {
                    bar = (byte) (foo[i] & 0xff);
                    sb.Append(chars[(bar >> 4) & 0xf]);
                    sb.Append(chars[(bar) & 0xf]);
                    if (i + 1 < foo.Length)
                        sb.Append(":");
                }
                return sb.ToString();
            }
            catch
            {
                return "???";
            }
        }

        internal static Socket createSocket(String host, int port, int timeout)
        {
            Socket socket = null;
            String message = "";
            if (timeout == 0)
            {
                try
                {
                    socket = new Socket(host, port);
                    return socket;
                }
                catch (Exception e)
                {
                    message = e.ToString();
                    throw new JSchException(message);
                }
            }
            String _host = host;
            int _port = port;
            Socket[] sockp = new Socket[1];
            Thread currentThread = Thread.CurrentThread;
            Exception[] ee = new Exception[1];
            message = "";
            createSocketRun runnable = new createSocketRun(sockp, ee, _host, _port);
            Thread tmp = new Thread(new ThreadStart(runnable.run));
            tmp.Name = "Opening Socket " + host;
            tmp.Start();
            try
            {
                tmp.Join(timeout);
                message = "timeout: ";
            }
            catch (ThreadInterruptedException eee)
            {
            }
            if (sockp[0] != null && sockp[0].isConnected())
            {
                socket = sockp[0];
            }
            else
            {
                message += "socket is not established";
                if (ee[0] != null)
                {
                    message = ee[0].ToString();
                }
                tmp.Interrupt();
                tmp = null;
                throw new JSchException(message);
            }
            return socket;
        }

        private class createSocketRun
        {
            private Socket[] sockp;
            private Exception[] ee;
            private string _host;
            private int _port;

            public createSocketRun(Socket[] sockp, Exception[] ee, string _host, int _port)
            {
                this.sockp = sockp;
                this.ee = ee;
                this._host = _host;
                this._port = _port;
            }

            public void run()
            {
                sockp[0] = null;
                try
                {
                    sockp[0] = new Socket(_host, _port);
                }
                catch (Exception e)
                {
                    ee[0] = e;
                    if (sockp[0] != null && sockp[0].isConnected())
                    {
                        try
                        {
                            sockp[0].Close();
                        }
                        catch (Exception eee)
                        {
                        }
                    }
                    sockp[0] = null;
                }
            }
        }

        internal static bool array_equals(byte[] foo, byte[] bar)
        {
            int i = foo.Length;
            if (i != bar.Length) return false;
            for (int j = 0; j < i; j++)
            {
                if (foo[j] != bar[j]) return false;
            }
            //try{while(true){i--; if(foo[i]!=bar[i])return false;}}catch(System.Exception e){}
            return true;
        }

        public static string getString(byte[] arr, int offset, int len)
        {
            return Encoding.Default.GetString(arr, offset, len);
        }

        public static string getStringUTF8(byte[] arr, int offset, int len)
        {
            return Encoding.UTF8.GetString(arr, offset, len);
        }

        public static string getString(byte[] arr)
        {
            return getString(arr, 0, arr.Length);
        }

        public static string getStringUTF8(byte[] arr)
        {
            return getStringUTF8(arr, 0, arr.Length);
        }

        public static byte[] getBytes(String str)
        {
            return Encoding.Default.GetBytes(str);
        }

        public static byte[] getBytesUTF8(String str)
        {
            return Encoding.UTF8.GetBytes(str);
        }

        public static bool regionMatches(String orig, bool ignoreCase, int toffset,
                                         String other, int ooffset, int len)
        {
            char[] ta = new char[orig.Length];
            char[] pa = new char[other.Length];
            orig.CopyTo(0, ta, 0, orig.Length);
            int to = toffset;
            other.CopyTo(0, pa, 0, other.Length);
            int po = ooffset;
            // Note: toffset, ooffset, or len might be near -1>>>1.
            if ((ooffset < 0) || (toffset < 0) || (toffset > (long) orig.Length - len) ||
                (ooffset > (long) other.Length - len))
            {
                return false;
            }
            while (len-- > 0)
            {
                char c1 = ta[to++];
                char c2 = pa[po++];
                if (c1 == c2)
                {
                    continue;
                }
                if (ignoreCase)
                {
                    // If characters don't match but case may be ignored,
                    // try converting both characters to uppercase.
                    // If the results match, then the comparison scan should
                    // continue.
                    char u1 = char.ToUpper(c1);
                    char u2 = char.ToUpper(c2);
                    if (u1 == u2)
                    {
                        continue;
                    }
                    // Unfortunately, conversion to uppercase does not work properly
                    // for the Georgian alphabet, which has strange rules about case
                    // conversion.  So we need to make one last check before
                    // exiting.
                    if (char.ToLower(u1) == char.ToLower(u2))
                    {
                        continue;
                    }
                }
                return false;
            }
            return true;
        }

        public static uint ToUInt32(byte[] ptr, int Index)
        {
            uint ui = 0;

            ui = ((uint) ptr[Index++]) << 24;
            ui += ((uint) ptr[Index++]) << 16;
            ui += ((uint) ptr[Index++]) << 8;
            ui += (uint) ptr[Index++];

            return ui;
        }

        public static int ToInt32(byte[] ptr, int Index)
        {
            return (int) ToUInt32(ptr, Index);
        }

        public static ushort ToUInt16(byte[] ptr, int Index)
        {
            ushort u = 0;

            u = (ushort) ptr[Index++];
            u *= 256;
            u += (ushort) ptr[Index++];

            return u;
        }

        public static bool ArrayContains(Object[] arr, Object o)
        {
            for (int i = 0; i < arr.Length; i++)
            {
                if (arr[i].Equals(o))
                    return true;
            }
            return false;
        }

        public static bool ArrayContains(char[] arr, char c)
        {
            for (int i = 0; i < arr.Length; i++)
            {
                if (arr[i] == c)
                    return true;
            }
            return false;
        }

        public static bool ArrayContains(char[] arr, char c, int count)
        {
            for (int i = 0; i < count; i++)
            {
                if (arr[i] == c)
                    return true;
            }
            return false;
        }

        /**
		* Utility method to delete the leading zeros from the modulus.
		* @param a modulus
		* @return modulus
		*/

        public static byte[] stripLeadingZeros(byte[] a)
        {
            int lastZero = -1;
            for (int i = 0; i < a.Length; i++)
            {
                if (a[i] == 0)
                {
                    lastZero = i;
                }
                else
                {
                    break;
                }
            }
            lastZero++;
            byte[] result = new byte[a.Length - lastZero];
            Array.Copy(a, lastZero, result, 0, result.Length);
            return result;
        }

        /*
		Based on: http://www.orlingrabbe.com/dsa_java.htm
		And on: http://groups.google.com/group/comp.lang.java.security/browse_thread/thread/8f3bb93f9348434f/a1681ec252084483?lnk=st&q=ASN.1+signature+dsa+format&rnum=5&hl=en#a1681ec252084483
		If you're asking about the SHA/DSA signature format from 
		java.security.Signature, it looks like this, for example: 

		% od -tx1 sig 
		0000000 30 2c 02 14 4f 01 01 92 24 7c b3 c7 af 76 71 92 
		0000020 9c db c7 fe 1f 4e 42 4f 02 14 78 f3 63 d5 a3 0e 
		0000040 be 7d 92 7c 43 8d 0f 5f 02 df ee 35 9e b2 


		It's DER format, with 0x30 meaning SEQUENCE, 0x2c the length of the 
		sequence, 0x02 meaning INTEGER, and 0x14 the length of the integer. 
		The first integer (as a byte array) is r, and the second one is s. 

		*/

        public static byte[] FixDsaSig(byte[] sig)
        {
            byte[] newSig = new byte[40];
            Array.Copy(sig, 4, newSig, 0, 20);
            int index;
            if (sig.Length == 46)
                index = 26;
            else if (sig.Length == 47)
                index = 27;
            else
                throw new Exception("Can't fix DSA Signature.");
            Array.Copy(sig, index, newSig, 20, 20);
            return newSig;
        }

        public static string hex(byte[] arr)
        {
            string hex = "0x";
            for (int i = 0; i < arr.Length; i++)
            {
                string mbyte = arr[i].ToString("X");
                if (mbyte.Length == 1)
                    mbyte = "0" + mbyte;
                hex += mbyte;
            }
            return hex;
        }

        internal static String unquote(String _path)
        {
            byte[] path = _path.GetBytes();
            int pathlen = path.Length;
            int i = 0;
            while (i < pathlen)
            {
                if (path[i] == '\\')
                {
                    if (i + 1 == pathlen)
                        break;
                    Array.Copy(path, i + 1, path, i, path.Length - (i + 1));
                    pathlen--;
                    continue;
                }
                i++;
            }
            if (pathlen == path.Length) return _path;
            byte[] foo = new byte[pathlen];
            Array.Copy(path, 0, foo, 0, pathlen);
            return new JavaString(foo);
        }
    }
}
Back to Top