summaryrefslogtreecommitdiffstats
path: root/libkpgp/kpgpbaseG.cpp
blob: 2e5c916fccfd97837c98e4b7048218eb397056c5 (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
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
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
/*
    kpgpbaseG.cpp

    Copyright (C) 2001,2002 the KPGP authors
    See file AUTHORS.kpgp for details

    This file is part of KPGP, the KDE PGP/GnuPG support library.

    KPGP is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software Foundation,
    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "kpgpbase.h"
#include "kpgp.h"

#include <tdelocale.h>
#include <kprocess.h>
#include <kdebug.h>

#include <tqtextcodec.h>

#include <string.h> /* strncmp */

namespace Kpgp {

BaseG::BaseG()
  : Base()
{
  // determine the version of gpg (the method is equivalent to gpgme's method)
  runGpg( "--version", 0 );
  int eol = output.find( '\n' );
  if( eol > 0 ) {
    int pos = output.findRev( ' ', eol - 1 );
    if( pos != -1 ) {
      mVersion = output.mid( pos + 1, eol - pos - 1 );
      kdDebug(5100) << "found GnuPG " << mVersion << endl;
    }
  }
}


BaseG::~BaseG()
{
}


int
BaseG::encrypt( Block& block, const KeyIDList& recipients )
{
  return encsign( block, recipients, 0 );
}


int
BaseG::clearsign( Block& block, const TQString &passphrase )
{
  return encsign( block, KeyIDList(), passphrase );
}


int
BaseG::encsign( Block& block, const KeyIDList& recipients,
                const TQString &passphrase )
{
  TQCString cmd;
  int exitStatus = 0;

  if (!recipients.isEmpty() && !passphrase.isEmpty())
    cmd = "--batch --armor --sign --encrypt --textmode";
  else if(!recipients.isEmpty())
    cmd = "--batch --armor --encrypt --textmode";
  else if (!passphrase.isEmpty())
    cmd = "--batch --escape-from --clearsign";
  else
  {
    kdDebug(5100) << "kpgpbase: Neither recipients nor passphrase specified." << endl;
    return OK;
  }

  if (!passphrase.isEmpty())
    cmd += addUserId();

  if(!recipients.isEmpty())
  {
    cmd += " --set-filename stdin";

    TQCString pgpUser = Module::getKpgp()->user();
    if(Module::getKpgp()->encryptToSelf() && !pgpUser.isEmpty()) {
      cmd += " -r 0x";
      cmd += pgpUser;
    }

    for( KeyIDList::ConstIterator it = recipients.begin();
         it != recipients.end(); ++it ) {
      cmd += " -r 0x";
      cmd += (*it);
    }
  }

  clear();
  input = block.text();
  exitStatus = runGpg(cmd.data(), passphrase);
  if( !output.isEmpty() )
    block.setProcessedText( output );
  block.setError( error );

  if( exitStatus != 0 )
  {
    // this error message is later hopefully overwritten
    errMsg = i18n( "Unknown error." );
    status = ERROR;
  }

#if 0
  // #### FIXME: As we check the keys ourselves the following problems
  //             shouldn't occur. Therefore I don't handle them for now.
  //             IK 01/2002
  if(!recipients.isEmpty())
  {
    int index = 0;
    bool bad = FALSE;
    unsigned int num = 0;
    TQCString badkeys = "";
    // Examples:
    // gpg: 0x12345678: skipped: public key not found
    // gpg: 0x12345678: skipped: public key is disabled
    // gpg: 0x12345678: skipped: unusable public key
    // (expired or revoked key)
    // gpg: 23456789: no info to calculate a trust probability
    // (untrusted key, 23456789 is the key Id of the encryption sub key)
    while((index = error.find("skipped: ",index)) != -1)
    {
      bad = TRUE;
      index = error.find('\'',index);
      int index2 = error.find('\'',index+1);
      badkeys += error.mid(index, index2-index+1) + ", ";
      num++;
    }
    if(bad)
    {
      badkeys.stripWhiteSpace();
      if(num == recipients.count())
        errMsg = i18n("Could not find public keys matching the userid(s)\n"
                      "%1;\n"
                      "the message is not encrypted.")
                     .arg( badkeys.data() );
      else
        errMsg = i18n("Could not find public keys matching the userid(s)\n"
                      "%1;\n"
                      "these persons will not be able to read the message.")
                     .arg( badkeys.data() );
      status |= MISSINGKEY;
      status |= ERROR;
    }
  }
#endif
  if (!passphrase.isEmpty())
  {
    // Example 1 (bad passphrase, clearsign only):
    // gpg: skipped `0x12345678': bad passphrase
    // gpg: [stdin]: clearsign failed: bad passphrase
    // Example 2 (bad passphrase, sign & encrypt):
    // gpg: skipped `0x12345678': bad passphrase
    // gpg: [stdin]: sign+encrypt failed: bad passphrase
    // Example 3 (unusable secret key, clearsign only):
    // gpg: skipped `0x12345678': unusable secret key
    // gpg: [stdin]: clearsign failed: unusable secret key
    // Example 4 (unusable secret key, sign & encrypt):
    // gpg: skipped `0xAC0EB35D': unusable secret key
    // gpg: [stdin]: sign+encrypt failed: unusable secret key
    if( error.find("bad passphrase") != -1 )
    {
      errMsg = i18n("Signing failed because the passphrase is wrong.");
      status |= BADPHRASE;
      status |= ERR_SIGNING;
      status |= ERROR;
    }
    else if( error.find("unusable secret key") != -1 )
    {
      errMsg = i18n("Signing failed because your secret key is unusable.");
      status |= ERR_SIGNING;
      status |= ERROR;
    }
    else if( !( status & ERROR ) )
    {
      //kdDebug(5100) << "Base: Good Passphrase!" << endl;
      status |= SIGNED;
    }
  }

  //kdDebug(5100) << "status = " << status << endl;
  block.setStatus( status );
  return status;
}


int
BaseG::decrypt( Block& block, const TQString &passphrase )
{
  int index, index2;
  int exitStatus = 0;

  clear();
  input = block.text();
  exitStatus = runGpg("--batch --decrypt", passphrase);
  if( !output.isEmpty() && ( error.find( "gpg: quoted printable" ) == -1 ) )
    block.setProcessedText( output );
  block.setError( error );

  if(exitStatus == -1) {
    errMsg = i18n("Error running gpg");
    status = RUN_ERR;
    block.setStatus( status );
    return status;
  }

  // Example 1 (good passphrase, decryption successful):
  // gpg: encrypted with 2048-bit ELG-E key, ID 12345678, created 2000-11-11
  //       "Foo Bar <foo@bar.xyz>"
  //
  // Example 2 (bad passphrase):
  // gpg: encrypted with 1024-bit RSA key, ID 12345678, created 1991-01-01
  //       "Foo Bar <foo@bar.xyz>"
  // gpg: public key decryption failed: bad passphrase
  // gpg: decryption failed: secret key not available
  //
  // Example 3 (no secret key available):
  // gpg: encrypted with RSA key, ID 12345678
  // gpg: decryption failed: secret key not available
  //
  // Example 4 (good passphrase for second key, decryption successful):
  // gpg: encrypted with 2048-bit ELG-E key, ID 12345678, created 2000-01-01
  //       "Foo Bar (work) <foo@bar.xyz>"
  // gpg: public key decryption failed: bad passphrase
  // gpg: encrypted with 2048-bit ELG-E key, ID 23456789, created 2000-02-02
  //       "Foo Bar (home) <foo@bar.xyz>"
  if( error.find( "gpg: encrypted with" ) != -1 )
  {
    //kdDebug(5100) << "kpgpbase: message is encrypted" << endl;
    status |= ENCRYPTED;
    if( error.find( "\ngpg: decryption failed" ) != -1 )
    {
      if( ( index = error.find( "bad passphrase" ) ) != -1 )
      {
        if (!passphrase.isEmpty())
        {
          errMsg = i18n( "Bad passphrase; could not decrypt." );
          kdDebug(5100) << "Base: passphrase is bad" << endl;
          status |= BADPHRASE;
          status |= ERROR;
        }
        else
        {
          // Search backwards the user ID of the needed key
          index2 = error.findRev('"', index) - 1;
          index = error.findRev("      \"", index2) + 7;
          // The conversion from UTF8 is necessary because gpg stores and
          // prints user IDs in UTF8
          block.setRequiredUserId( TQString::fromUtf8( error.mid( index, index2 - index + 1 ) ) );
          kdDebug(5100) << "Base: key needed is \"" << block.requiredUserId() << "\"!" << endl;
        }
      }
      else if( error.find( "secret key not available" ) != -1 )
      {
        // no secret key fitting this message
        status |= NO_SEC_KEY;
        status |= ERROR;
        errMsg = i18n("You do not have the secret key needed to decrypt this message.");
        kdDebug(5100) << "Base: no secret key for this message" << endl;
      }
    }
    // check for persons
#if 0
    // ##### FIXME: This information is anyway currently not used
    //       I'll change it to always determine the recipients.
    index = error.find("can only be read by:");
    if(index != -1)
    {
      index = error.find('\n',index);
      int end = error.find("\n\n",index);

      mRecipients.clear();
      while( (index2 = error.find('\n',index+1)) <= end )
      {
	TQCString item = error.mid(index+1,index2-index-1);
	item.stripWhiteSpace();
	mRecipients.append(item);
	index = index2;
      }
    }
#endif
  }

  // Example 1 (unknown signature key):
  // gpg: Signature made Wed 02 Jan 2002 11:26:33 AM CET using DSA key ID 2E250C64
  // gpg: Can't check signature: public key not found
  if((index = error.find("Signature made")) != -1)
  {
    //kdDebug(5100) << "Base: message is signed" << endl;
    status |= SIGNED;
    // get signature date and signature key ID
    // Example: Signature made Sun 06 May 2001 03:49:27 PM CEST using DSA key ID 12345678
    index2 = error.find("using", index+15);
    block.setSignatureDate( error.mid(index+15, index2-(index+15)-1) );
    kdDebug(5100) << "Message was signed on '" << block.signatureDate() << "'\n";
    // To handle gnupg > 2.1
    // gpg: Signature made Thu 05 Apr 2018 10:02:50 PM CEST
    // gpg:                using DSA key A0CF1DC09533E5E87F54DB40F1EEB8CD9FB16A50
    // gpg: Good signature from "deloptes <deloptes@gmail.com>" [ultimate]
    // so we need extra check
    if (error.contains("key ID") > 0) {
		index2 = error.find("key ID ", index2) + 7;
		block.setSignatureKeyId( error.mid(index2,8) );
    }
    else {
		index2 = error.find("key ", index2) + 4;
		// handle variable key size
		// gpg: Signature made Mon 02 Apr 2018 03:15:08 PM CEST
		// gpg:                using DSA key 05C82CF57AD1DA46
		// gpg: Can't check signature: No public key
		int end =  error.find("\n", index2);
		block.setSignatureKeyId( error.mid(index2,end-index2) );
    }
    kdDebug(5100) << "Message was signed with key '" << block.signatureKeyId() << "'\n";
    // move index to start of next line
    index = error.find('\n', index2)+1;

    if ((error.find("Key matching expected", index) != -1)
        || (error.find("Can't check signature", index) != -1))
    {
      status |= UNKNOWN_SIG;
      status |= GOODSIG;
      block.setSignatureUserId( TQString() );
    }
    else if( error.find("Good signature", index) != -1 )
    {
      status |= GOODSIG;
      // get the primary user ID of the signer
      index = error.find('"',index);
      index2 = error.find('\n',index+1);
      index2 = error.findRev('"', index2-1);
      block.setSignatureUserId( TQString::fromLocal8Bit( error.mid( index+1, index2-index-1 ) ) );
    }
    else if( error.find("BAD signature", index) != -1 )
    {
      //kdDebug(5100) << "BAD signature" << endl;
      status |= ERROR;
      // get the primary user ID of the signer
      index = error.find('"',index);
      index2 = error.find('\n',index+1);
      index2 = error.findRev('"', index2-1);
      block.setSignatureUserId( TQString::fromLocal8Bit(  error.mid( index+1, index2-index-1 ) ) );
    }
    else if( error.find("Can't find the right public key", index) != -1 )
    {
      // #### fix this hack
      // I think this can't happen anymore because if the pubring is missing
      // the current GnuPG creates a new empty one.
      status |= UNKNOWN_SIG;
      status |= GOODSIG; // this is a hack...
      block.setSignatureUserId( i18n("??? (file ~/.gnupg/pubring.gpg not found)") );
    }
    else
    {
      status |= ERROR;
      block.setSignatureUserId( TQString() );
    }
  }
  //kdDebug(5100) << "status = " << status << endl;
  block.setStatus( status );
  return status;
}


Key*
BaseG::readPublicKey( const KeyID& keyID,
                      const bool readTrust /* = false */,
                      Key* key /* = 0 */ )
{
  int exitStatus = 0;

  status = 0;
  if( readTrust )
    exitStatus = runGpg( "--batch --list-public-keys --with-fingerprint --with-colons --fixed-list-mode 0x" + keyID, 0, true );
  else
    exitStatus = runGpg( "--batch --list-public-keys --with-fingerprint --with-colons --fixed-list-mode --no-expensive-trust-checks 0x" + keyID, 0, true );

  if(exitStatus != 0) {
    status = ERROR;
    return 0;
  }

  int offset;
  // search start of key data
  if( !strncmp( output.data(), "pub:", 4 ) )
    offset = 0;
  else {
    offset = output.find( "\npub:" );
    if( offset == -1 )
      return 0;
    else
      offset++;
  }

  key = parseKeyData( output, offset, key );

  return key;
}


KeyList
BaseG::publicKeys( const TQStringList & patterns )
{
  int exitStatus = 0;

  // the option --with-colons should be used for interprocess communication
  // with gpg (according to Werner Koch)
  TQCString cmd = "--batch --list-public-keys --with-fingerprint --with-colons "
                 "--fixed-list-mode --no-expensive-trust-checks";
  for ( TQStringList::ConstIterator it = patterns.begin();
        it != patterns.end(); ++it ) {
    cmd += " ";
    cmd += TDEProcess::quote( *it ).local8Bit();
  }
  status = 0;
  exitStatus = runGpg( cmd, 0, true );

  if(exitStatus != 0) {
    status = ERROR;
    return KeyList();
  }

  // now we need to parse the output for public keys
  KeyList publicKeys = parseKeyList(output, false);

  // sort the list of public keys
  publicKeys.sort();

  return publicKeys;
}


KeyList
BaseG::secretKeys( const TQStringList & patterns )
{
  int exitStatus = 0;

  // the option --with-colons should be used for interprocess communication
  // with gpg (according to Werner Koch)
  TQCString cmd = "--batch --list-secret-keys --with-fingerprint --with-colons "
                 "--fixed-list-mode";
  for ( TQStringList::ConstIterator it = patterns.begin();
        it != patterns.end(); ++it ) {
    cmd += " ";
    cmd += TDEProcess::quote( *it ).local8Bit();
  }
  status = 0;
  exitStatus = runGpg( cmd, 0, true );

  if(exitStatus != 0) {
    status = ERROR;
    return KeyList();
  }

  // now we need to parse the output for secret keys
  KeyList secretKeys = parseKeyList(output, true);

  // sort the list of secret keys
  secretKeys.sort();

  return secretKeys;
}


int
BaseG::signKey(const KeyID& keyID, const TQString &passphrase)
{
  TQCString cmd;
  int exitStatus = 0;

  cmd = "--batch";
  cmd += addUserId();
  cmd += " --sign-key 0x";
  cmd += keyID;

  status = 0;
  exitStatus = runGpg(cmd.data(), passphrase);

  if (exitStatus != 0)
    status = ERROR;

  return status;
}


TQCString
BaseG::getAsciiPublicKey(const KeyID& keyID)
{
  int exitStatus = 0;

  if (keyID.isEmpty())
    return TQCString();

  status = 0;
  exitStatus = runGpg("--batch --armor --export 0x" + keyID, 0, true);

  if(exitStatus != 0) {
    status = ERROR;
    return TQCString();
  }

  return output;
}


Key*
BaseG::parseKeyData( const TQCString& output, int& offset, Key* key /* = 0 */ )
// This function parses the data for a single key which is output by GnuPG
// with the following command line arguments:
//   --batch --list-public-keys --with-fingerprint --with-colons
//   --fixed-list-mode [--no-expensive-trust-checks]
// It expects the key data to start at offset and returns the start of
// the next key's data in offset.
// Subkeys are currently ignored.
{
  int index = offset;

  if(    ( strncmp( output.data() + offset, "pub:", 4 ) != 0 )
      && ( strncmp( output.data() + offset, "sec:", 4 ) != 0 ) ) {
    return 0;
  }

  if( key == 0 )
    key = new Key();
  else
    key->clear();

  TQCString keyID;
  bool firstKey = true;

  while( true )
  {
    int eol;
    // search the end of the current line
    if( ( eol = output.find( '\n', index ) ) == -1 )
      break;

    bool bIsPublicKey = false;
    if( ( bIsPublicKey = !strncmp( output.data() + index, "pub:", 4 ) )
        || !strncmp( output.data() + index, "sec:", 4 ) )
    { // line contains primary key data
      // Example: pub:f:1024:17:63CB691DFAEBD5FC:860451781::379:-:::scESC:

      // abort parsing if we found the start of the next key
      if( !firstKey )
        break;
      firstKey = false;

      key->setSecret( !bIsPublicKey );

      Subkey *subkey = new Subkey( TQCString(), !bIsPublicKey );

      int pos = index + 4; // begin of 2nd field
      int pos2 = output.find( ':', pos );
      for( int field = 2; field <= 12; field++ )
      {
        switch( field )
        {
        case 2: // the calculated trust
          if( pos2 > pos )
          {
            switch( output[pos] )
            {
            case 'o': // unknown (this key is new to the system)
              break;
            case 'i': // the key is invalid, e.g. missing self-signature
              subkey->setInvalid( true );
              key->setInvalid( true );
              break;
            case 'd': // the key has been disabled
              subkey->setDisabled( true );
              key->setDisabled( true );
              break;
            case 'r': // the key has been revoked
              subkey->setRevoked( true );
              key->setRevoked( true );
              break;
            case 'e': // the key has expired
              subkey->setExpired( true );
              key->setExpired( true );
              break;
            case '-': // undefined (no path leads to the key)
            case 'q': // undefined (no trusted path leads to the key)
            case 'n': // don't trust this key at all
            case 'm': // the key is marginally trusted
            case 'f': // the key is fully trusted
            case 'u': // the key is ultimately trusted (secret key available)
              // These values are ignored since we determine the key trust
              // from the trust values of the user ids.
              break;
            default:
              kdDebug(5100) << "Unknown trust value\n";
            }
          }
          break;
        case 3: // length of key in bits
          if( pos2 > pos )
            subkey->setKeyLength( output.mid( pos, pos2-pos ).toUInt() );
          break;
        case 4: //  the key algorithm
          if( pos2 > pos )
            subkey->setKeyAlgorithm( output.mid( pos, pos2-pos ).toUInt() );
          break;
        case 5: // the long key id
          keyID = output.mid( pos, pos2-pos );
          subkey->setKeyID( keyID );
          break;
        case 6: // the creation date (in seconds since 1970-01-01 00:00:00)
          if( pos2 > pos )
            subkey->setCreationDate( output.mid( pos, pos2-pos ).toLong() );
          break;
        case 7: // the expiration date (in seconds since 1970-01-01 00:00:00)
          if( pos2 > pos )
            subkey->setExpirationDate( output.mid( pos, pos2-pos ).toLong() );
          else
            subkey->setExpirationDate( -1 ); // key expires never
          break;
        case 8: // local ID (ignored)
        case 9: // Ownertrust (ignored for now)
        case 10: // User-ID (always empty in --fixed-list-mode)
        case 11: // signature class (always empty except for key signatures)
          break;
        case 12: // key capabilities
          for( int i=pos; i<pos2; i++ )
            switch( output[i] )
            {
            case 'e':
              subkey->setCanEncrypt( true );
              break;
            case 's':
              subkey->setCanSign( true );
              break;
            case 'c':
              subkey->setCanCertify( true );
              break;
            case 'E':
              key->setCanEncrypt( true );
              break;
            case 'S':
              key->setCanSign( true );
              break;
            case 'C':
              key->setCanCertify( true );
              break;
            default:
              kdDebug(5100) << "Unknown key capability\n";
            }
          break;
        }
        pos = pos2 + 1;
        pos2 = output.find( ':', pos );
      }
      key->addSubkey( subkey );
    }
    else if( !strncmp( output.data() + index, "uid:", 4 ) )
    { // line contains a user id
      // Example: uid:f::::::::Philip R. Zimmermann <prz@pgp.com>:

      UserID *userID = new UserID( "" );

      int pos = index + 4; // begin of 2nd field
      int pos2 = output.find( ':', pos );
      for( int field=2; field <= 10; field++ )
      {
        switch( field )
        {
        case 2: // the calculated trust
          if( pos2 > pos )
          {
            switch( output[pos] )
            {
            case 'i': // the user id is invalid, e.g. missing self-signature
              userID->setInvalid( true );
              break;
            case 'r': // the user id has been revoked
              userID->setRevoked( true );
              break;
            case '-': // undefined (no path leads to the key)
            case 'q': // undefined (no trusted path leads to the key)
              userID->setValidity( KPGP_VALIDITY_UNDEFINED );
              break;
            case 'n': // don't trust this key at all
              userID->setValidity( KPGP_VALIDITY_NEVER );
              break;
            case 'm': // the key is marginally trusted
              userID->setValidity( KPGP_VALIDITY_MARGINAL );
              break;
            case 'f': // the key is fully trusted
              userID->setValidity( KPGP_VALIDITY_FULL );
              break;
            case 'u': // the key is ultimately trusted (secret key available)
              userID->setValidity( KPGP_VALIDITY_ULTIMATE );
              break;
            default:
              kdDebug(5100) << "Unknown trust value\n";
            }
          }
          break;
        case 3: // these fields are empty
        case 4:
        case 5:
        case 6:
        case 7:
        case 8:
        case 9:
          break;
        case 10: // User-ID
          TQCString uid = output.mid( pos, pos2-pos );
          // replace "\xXX" with the corresponding character;
          // other escaped characters, i.e. \n, \r etc., are ignored
          // because they shouldn't appear in user IDs
          for ( int idx = 0 ; (idx = uid.find( "\\x", idx )) >= 0 ; ++idx ) {
            char str[2] = "x";
            str[0] = (char) TQString( uid.mid( idx + 2, 2 ) ).toShort( 0, 16 );
            uid.replace( idx, 4, str );
          }
          TQString uidString = TQString::fromUtf8( uid.data() );
          // check whether uid was utf-8 encoded
          bool isUtf8 = true;
          for ( unsigned int i = 0; i + 1 < uidString.length(); ++i ) {
            if ( uidString[i].unicode() == 0xdbff &&
                 uidString[i+1].row() == 0xde ) {
              // we found a non-Unicode character (see TQString::fromUtf8())
              isUtf8 = false;
              break;
            }
          }
          if( !isUtf8 ) {
            // The user id isn't utf-8 encoded. It was most likely
            // created with PGP which either used latin1 or koi8-r.
            kdDebug(5100) << "User Id '" << uid
                          << "' doesn't seem to be utf-8 encoded." << endl;

            // We determine the ratio between non-ASCII and ASCII chars.
            // A koi8-r user id should have lots of non-ASCII chars.
            int nonAsciiCount = 0, asciiCount = 0;

            // We only look at the first part of the user id (i. e. everything
            // before the email address resp. before a comment)
            for( signed char* ch = (signed char*)uid.data();
                 *ch && ( *ch != '(' ) && ( *ch != '<' );
                 ++ch ) {
              if( ( ( *ch >= 'A' ) && ( *ch <= 'Z' ) )
                  || ( ( *ch >= 'a' ) && ( *ch <= 'z' ) ) )
                ++asciiCount;
              else if( *ch < 0 )
                ++nonAsciiCount;
            }
            kdDebug(5100) << "ascii-nonAscii ratio : " << asciiCount
                          << ":" << nonAsciiCount << endl;
            if( nonAsciiCount > asciiCount ) {
              // assume koi8-r encoding
              kdDebug(5100) << "Assume koi8-r encoding." << endl;
              TQTextCodec *codec = TQTextCodec::codecForName("KOI8-R");
              uidString = codec->toUnicode( uid.data() );
              // check the case of the first two characters to find out
              // whether the user id is probably CP1251 encoded (for some
              // reason in CP1251 the lower case characters have smaller
              // codes than the upper case characters, so if the first char
              // of the koi8-r decoded user id is lower case and the second
              // char is upper case then it's likely that the user id is
              // CP1251 encoded)
              if( ( uidString.length() >= 2 )
                  && ( uidString[0].lower() == uidString[0] )
                  && ( uidString[1].upper() == uidString[1] ) ) {
                // koi8-r decoded user id has inverted case, so assume
                // CP1251 encoding
                kdDebug(5100) << "No, it doesn't seem to be koi8-r. "
                                 "Use CP 1251 instead." << endl;
                TQTextCodec *codec = TQTextCodec::codecForName("CP1251");
                uidString = codec->toUnicode( uid.data() );
              }
            }
            else {
              // assume latin1 encoding
              kdDebug(5100) << "Assume latin1 encoding." << endl;
              uidString = TQString::fromLatin1( uid.data() );
            }
          }
          userID->setText( uidString );
          break;
        }
        pos = pos2 + 1;
        pos2 = output.find( ':', pos );
      }

      // user IDs are printed in UTF-8 by gpg (if one uses --with-colons)
      key->addUserID( userID );
    }
    else if( !strncmp( output.data() + index, "fpr:", 4 ) )
    { // line contains a fingerprint
      // Example: fpr:::::::::17AFBAAF21064E513F037E6E63CB691DFAEBD5FC:

      if (key == 0) // invalid key data
	break;

      // search the fingerprint (it's in the 10th field)
      int pos = index + 4;
      for( int i = 0; i < 8; i++ )
        pos = output.find( ':', pos ) + 1;
      int pos2 = output.find( ':', pos );

      key->setFingerprint( keyID, output.mid( pos, pos2-pos ) );
    }
    index = eol + 1;
  }

  //kdDebug(5100) << "finished parsing key data\n";

  offset = index;

  return key;
}


KeyList
BaseG::parseKeyList( const TQCString& output, bool secretKeys )
{
  KeyList keys;
  Key *key = 0;
  int offset;

  // search start of key data
  if(    !strncmp( output.data(), "pub:", 4 )
      || !strncmp( output.data(), "sec:", 4 ) )
    offset = 0;
  else {
    if( secretKeys )
      offset = output.find( "\nsec:" );
    else
      offset = output.find( "\npub:" );
    if( offset == -1 )
      return keys;
    else
      offset++;
  }

  do {
    key = parseKeyData( output, offset );
    if( key != 0 )
      keys.append( key );
  }
  while( key != 0 );

  //kdDebug(5100) << "finished parsing keys" << endl;

  return keys;
}


} // namespace Kpgp