summaryrefslogtreecommitdiffstats
path: root/g10/keyserver.c
blob: e3ad707438d93fceb64a1038bc99430ba6843803 (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
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
/* keyserver.c - generic keyserver code
 * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
 *               2009, 2011, 2012 Free Software Foundation, Inc.
 * Copyright (C) 2014 Werner Koch
 *
 * This file is part of GnuPG.
 *
 * GnuPG 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 3 of the License, or
 * (at your option) any later version.
 *
 * GnuPG is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

#include <config.h>
#include <ctype.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <assert.h>
#include <errno.h>

#include "gpg.h"
#include "iobuf.h"
#include "filter.h"
#include "keydb.h"
#include "status.h"
#include "exec.h"
#include "main.h"
#include "i18n.h"
#include "ttyio.h"
#include "options.h"
#include "packet.h"
#include "trustdb.h"
#include "keyserver-internal.h"
#include "util.h"
#include "dns-cert.h"
#include "pka.h"
#ifdef USE_DNS_SRV
#include "srv.h"
#endif
#include "membuf.h"
#include "call-dirmngr.h"

#ifdef HAVE_W32_SYSTEM
/* It seems Vista doesn't grok X_OK and so fails access() tests.
   Previous versions interpreted X_OK as F_OK anyway, so we'll just
   use F_OK directly. */
#undef X_OK
#define X_OK F_OK
#endif /* HAVE_W32_SYSTEM */

struct keyrec
{
  KEYDB_SEARCH_DESC desc;
  u32 createtime,expiretime;
  int size,flags;
  byte type;
  IOBUF uidbuf;
  unsigned int lines;
};

/* Parameters for the search line handler.  */
struct search_line_handler_parm_s
{
  ctrl_t ctrl;     /* The session control structure.  */
  char *searchstr_disp;  /* Native encoded search string or NULL.  */
  KEYDB_SEARCH_DESC *desc; /* Array with search descriptions.  */
  int count;      /* Number of keys we are currently prepared to
                     handle.  This is the size of the DESC array.  If
                     it is too small, it will grow safely.  */
  int validcount; /* Enable the "Key x-y of z" messages. */
  int nkeys;      /* Number of processed records.  */
  int any_lines;  /* At least one line has been processed.  */
  unsigned int numlines;  /* Counter for displayed lines.  */
  int eof_seen;   /* EOF encountered.  */
  int not_found;  /* Set if no keys have been found.  */
};


enum ks_action {KS_UNKNOWN=0,KS_GET,KS_GETNAME,KS_SEND,KS_SEARCH};

static struct parse_options keyserver_opts[]=
  {
    /* some of these options are not real - just for the help
       message */
    {"max-cert-size",0,NULL,NULL},
    {"include-revoked",0,NULL,N_("include revoked keys in search results")},
    {"include-subkeys",0,NULL,N_("include subkeys when searching by key ID")},
    {"use-temp-files",0,NULL,
     N_("use temporary files to pass data to keyserver helpers")},
    {"keep-temp-files",KEYSERVER_KEEP_TEMP_FILES,NULL,
     N_("do not delete temporary files after using them")},
    {"refresh-add-fake-v3-keyids",KEYSERVER_ADD_FAKE_V3,NULL,
     NULL},
    {"auto-key-retrieve",KEYSERVER_AUTO_KEY_RETRIEVE,NULL,
     N_("automatically retrieve keys when verifying signatures")},
    {"honor-keyserver-url",KEYSERVER_HONOR_KEYSERVER_URL,NULL,
     N_("honor the preferred keyserver URL set on the key")},
    {"honor-pka-record",KEYSERVER_HONOR_PKA_RECORD,NULL,
     N_("honor the PKA record set on a key when retrieving keys")},
    {NULL,0,NULL,NULL}
  };

static gpg_error_t keyserver_get (ctrl_t ctrl,
                                  KEYDB_SEARCH_DESC *desc, int ndesc,
                                  struct keyserver_spec *keyserver,
                                  unsigned char **r_fpr, size_t *r_fprlen);
static gpg_error_t keyserver_put (ctrl_t ctrl, strlist_t keyspecs,
                                  struct keyserver_spec *keyserver);


/* Reasonable guess.  The commonly used test key simon.josefsson.org
   is larger than 32k, thus we need at least this value. */
#define DEFAULT_MAX_CERT_SIZE 65536

static size_t max_cert_size=DEFAULT_MAX_CERT_SIZE;

static void
add_canonical_option(char *option,strlist_t *list)
{
  char *arg=argsplit(option);

  if(arg)
    {
      char *joined;

      joined=xmalloc(strlen(option)+1+strlen(arg)+1);
      /* Make a canonical name=value form with no spaces */
      strcpy(joined,option);
      strcat(joined,"=");
      strcat(joined,arg);
      append_to_strlist(list,joined);
      xfree(joined);
    }
  else
    append_to_strlist(list,option);
}

int
parse_keyserver_options(char *options)
{
  int ret=1;
  char *tok;
  char *max_cert=NULL;

  keyserver_opts[0].value=&max_cert;

  while((tok=optsep(&options)))
    {
      if(tok[0]=='\0')
	continue;

      /* For backwards compatibility.  1.2.x used honor-http-proxy and
	 there are a good number of documents published that recommend
	 it. */
      if(ascii_strcasecmp(tok,"honor-http-proxy")==0)
	tok="http-proxy";
      else if(ascii_strcasecmp(tok,"no-honor-http-proxy")==0)
	tok="no-http-proxy";

      /* We accept quite a few possible options here - some options to
	 handle specially, the keyserver_options list, and import and
	 export options that pertain to keyserver operations.  Note
	 that you must use strncasecmp here as there might be an
	 =argument attached which will foil the use of strcasecmp. */

#ifdef EXEC_TEMPFILE_ONLY
      if(ascii_strncasecmp(tok,"use-temp-files",14)==0 ||
	      ascii_strncasecmp(tok,"no-use-temp-files",17)==0)
	log_info(_("WARNING: keyserver option '%s' is not used"
		   " on this platform\n"),tok);
#else
      if(ascii_strncasecmp(tok,"use-temp-files",14)==0)
	opt.keyserver_options.options|=KEYSERVER_USE_TEMP_FILES;
      else if(ascii_strncasecmp(tok,"no-use-temp-files",17)==0)
	opt.keyserver_options.options&=~KEYSERVER_USE_TEMP_FILES;
#endif
      else if(!parse_options(tok,&opt.keyserver_options.options,
			     keyserver_opts,0)
	 && !parse_import_options(tok,
				  &opt.keyserver_options.import_options,0)
	 && !parse_export_options(tok,
				  &opt.keyserver_options.export_options,0))
	{
	  /* All of the standard options have failed, so the option is
	     destined for a keyserver plugin. */
	  add_canonical_option(tok,&opt.keyserver_options.other);
	}
    }

  if(max_cert)
    {
      max_cert_size=strtoul(max_cert,(char **)NULL,10);

      if(max_cert_size==0)
	max_cert_size=DEFAULT_MAX_CERT_SIZE;
    }

  return ret;
}

void
free_keyserver_spec(struct keyserver_spec *keyserver)
{
  xfree(keyserver->uri);
  xfree(keyserver->scheme);
  xfree(keyserver->auth);
  xfree(keyserver->host);
  xfree(keyserver->port);
  xfree(keyserver->path);
  xfree(keyserver->opaque);
  free_strlist(keyserver->options);
  xfree(keyserver);
}

/* Return 0 for match */
static int
cmp_keyserver_spec(struct keyserver_spec *one,struct keyserver_spec *two)
{
  if(ascii_strcasecmp(one->scheme,two->scheme)==0)
    {
      if(one->host && two->host && ascii_strcasecmp(one->host,two->host)==0)
	{
	  if((one->port && two->port
	      && ascii_strcasecmp(one->port,two->port)==0)
	     || (!one->port && !two->port))
	    return 0;
	}
      else if(one->opaque && two->opaque
	      && ascii_strcasecmp(one->opaque,two->opaque)==0)
	return 0;
    }

  return 1;
}

/* Try and match one of our keyservers.  If we can, return that.  If
   we can't, return our input. */
struct keyserver_spec *
keyserver_match(struct keyserver_spec *spec)
{
  struct keyserver_spec *ks;

  for(ks=opt.keyserver;ks;ks=ks->next)
    if(cmp_keyserver_spec(spec,ks)==0)
      return ks;

  return spec;
}

/* TODO: once we cut over to an all-curl world, we don't need this
   parser any longer so it can be removed, or at least moved to
   keyserver/ksutil.c for limited use in gpgkeys_ldap or the like. */

keyserver_spec_t
parse_keyserver_uri (const char *string,int require_scheme,
		     const char *configname,unsigned int configlineno)
{
  int assume_hkp=0;
  struct keyserver_spec *keyserver;
  const char *idx;
  int count;
  char *uri,*options;

  assert(string!=NULL);

  keyserver=xmalloc_clear(sizeof(struct keyserver_spec));

  uri=xstrdup(string);

  options=strchr(uri,' ');
  if(options)
    {
      char *tok;

      *options='\0';
      options++;

      while((tok=optsep(&options)))
	add_canonical_option(tok,&keyserver->options);
    }

  /* Get the scheme */

  for(idx=uri,count=0;*idx && *idx!=':';idx++)
    {
      count++;

      /* Do we see the start of an RFC-2732 ipv6 address here?  If so,
	 there clearly isn't a scheme so get out early. */
      if(*idx=='[')
	{
	  /* Was the '[' the first thing in the string?  If not, we
	     have a mangled scheme with a [ in it so fail. */
	  if(count==1)
	    break;
	  else
	    goto fail;
	}
    }

  if(count==0)
    goto fail;

  if(*idx=='\0' || *idx=='[')
    {
      if(require_scheme)
	return NULL;

      /* Assume HKP if there is no scheme */
      assume_hkp=1;
      keyserver->scheme=xstrdup("hkp");

      keyserver->uri=xmalloc(strlen(keyserver->scheme)+3+strlen(uri)+1);
      strcpy(keyserver->uri,keyserver->scheme);
      strcat(keyserver->uri,"://");
      strcat(keyserver->uri,uri);
    }
  else
    {
      int i;

      keyserver->uri=xstrdup(uri);

      keyserver->scheme=xmalloc(count+1);

      /* Force to lowercase */
      for(i=0;i<count;i++)
	keyserver->scheme[i]=ascii_tolower(uri[i]);

      keyserver->scheme[i]='\0';

      /* Skip past the scheme and colon */
      uri+=count+1;
    }

  if(ascii_strcasecmp(keyserver->scheme,"x-broken-hkp")==0)
    {
      deprecated_warning(configname,configlineno,"x-broken-hkp",
			 "--keyserver-options ","broken-http-proxy");
      xfree(keyserver->scheme);
      keyserver->scheme=xstrdup("hkp");
      append_to_strlist(&opt.keyserver_options.other,"broken-http-proxy");
    }
  else if(ascii_strcasecmp(keyserver->scheme,"x-hkp")==0)
    {
      /* Canonicalize this to "hkp" so it works with both the internal
	 and external keyserver interface. */
      xfree(keyserver->scheme);
      keyserver->scheme=xstrdup("hkp");
    }

  if (uri[0]=='/' && uri[1]=='/' && uri[2] == '/')
    {
      /* Three slashes means network path with a default host name.
         This is a hack because it does not crok all possible
         combiantions.  We should better repalce all code bythe parser
         from http.c.  */
      keyserver->path = xstrdup (uri+2);
    }
  else if(assume_hkp || (uri[0]=='/' && uri[1]=='/'))
    {
      /* Two slashes means network path. */

      /* Skip over the "//", if any */
      if(!assume_hkp)
	uri+=2;

      /* Do we have userinfo auth data present? */
      for(idx=uri,count=0;*idx && *idx!='@' && *idx!='/';idx++)
	count++;

      /* We found a @ before the slash, so that means everything
	 before the @ is auth data. */
      if(*idx=='@')
	{
	  if(count==0)
	    goto fail;

	  keyserver->auth=xmalloc(count+1);
	  strncpy(keyserver->auth,uri,count);
	  keyserver->auth[count]='\0';
	  uri+=count+1;
	}

      /* Is it an RFC-2732 ipv6 [literal address] ? */
      if(*uri=='[')
	{
	  for(idx=uri+1,count=1;*idx
		&& ((isascii (*idx) && isxdigit(*idx))
                    || *idx==':' || *idx=='.');idx++)
	    count++;

	  /* Is the ipv6 literal address terminated? */
	  if(*idx==']')
	    count++;
	  else
	    goto fail;
	}
      else
	for(idx=uri,count=0;*idx && *idx!=':' && *idx!='/';idx++)
	  count++;

      if(count==0)
	goto fail;

      keyserver->host=xmalloc(count+1);
      strncpy(keyserver->host,uri,count);
      keyserver->host[count]='\0';

      /* Skip past the host */
      uri+=count;

      if(*uri==':')
	{
	  /* It would seem to be reasonable to limit the range of the
	     ports to values between 1-65535, but RFC 1738 and 1808
	     imply there is no limit.  Of course, the real world has
	     limits. */

	  for(idx=uri+1,count=0;*idx && *idx!='/';idx++)
	    {
	      count++;

	      /* Ports are digits only */
	      if(!digitp(idx))
		goto fail;
	    }

	  keyserver->port=xmalloc(count+1);
	  strncpy(keyserver->port,uri+1,count);
	  keyserver->port[count]='\0';

	  /* Skip past the colon and port number */
	  uri+=1+count;
	}

      /* Everything else is the path */
      if(*uri)
	keyserver->path=xstrdup(uri);
      else
	keyserver->path=xstrdup("/");

      if(keyserver->path[1])
	keyserver->flags.direct_uri=1;
    }
  else if(uri[0]!='/')
    {
      /* No slash means opaque.  Just record the opaque blob and get
	 out. */
      keyserver->opaque=xstrdup(uri);
    }
  else
    {
      /* One slash means absolute path.  We don't need to support that
	 yet. */
      goto fail;
    }

  return keyserver;

 fail:
  free_keyserver_spec(keyserver);

  return NULL;
}

struct keyserver_spec *
parse_preferred_keyserver(PKT_signature *sig)
{
  struct keyserver_spec *spec=NULL;
  const byte *p;
  size_t plen;

  p=parse_sig_subpkt(sig->hashed,SIGSUBPKT_PREF_KS,&plen);
  if(p && plen)
    {
      byte *dupe=xmalloc(plen+1);

      memcpy(dupe,p,plen);
      dupe[plen]='\0';
      spec=parse_keyserver_uri(dupe,1,NULL,0);
      xfree(dupe);
    }

  return spec;
}

static void
print_keyrec(int number,struct keyrec *keyrec)
{
  int i;

  iobuf_writebyte(keyrec->uidbuf,0);
  iobuf_flush_temp(keyrec->uidbuf);
  es_printf ("(%d)\t%s  ", number, iobuf_get_temp_buffer (keyrec->uidbuf));

  if (keyrec->size>0)
    es_printf ("%d bit ", keyrec->size);

  if(keyrec->type)
    {
      const char *str;

      str = openpgp_pk_algo_name (keyrec->type);

      if (str && strcmp (str, "?"))
	es_printf ("%s ",str);
      else
	es_printf ("unknown ");
    }

  switch(keyrec->desc.mode)
    {
      /* If the keyserver helper gave us a short keyid, we have no
	 choice but to use it.  Do check --keyid-format to add a 0x if
	 needed. */
    case KEYDB_SEARCH_MODE_SHORT_KID:
      es_printf ("key %s%08lX",
                 (opt.keyid_format==KF_0xSHORT
                  || opt.keyid_format==KF_0xLONG)?"0x":"",
                 (ulong)keyrec->desc.u.kid[1]);
      break;

      /* However, if it gave us a long keyid, we can honor
	 --keyid-format via keystr(). */
    case KEYDB_SEARCH_MODE_LONG_KID:
      es_printf ("key %s",keystr(keyrec->desc.u.kid));
      break;

      /* If it gave us a PGP 2.x fingerprint, not much we can do
	 beyond displaying it. */
    case KEYDB_SEARCH_MODE_FPR16:
      es_printf ("key ");
      for(i=0;i<16;i++)
	es_printf ("%02X",keyrec->desc.u.fpr[i]);
      break;

      /* If we get a modern fingerprint, we have the most
	 flexibility. */
    case KEYDB_SEARCH_MODE_FPR20:
      {
	u32 kid[2];
	keyid_from_fingerprint(keyrec->desc.u.fpr,20,kid);
	es_printf("key %s",keystr(kid));
      }
      break;

    default:
      BUG();
      break;
    }

  if(keyrec->createtime>0)
    {
      es_printf (", ");
      es_printf (_("created: %s"), strtimestamp(keyrec->createtime));
    }

  if(keyrec->expiretime>0)
    {
      es_printf (", ");
      es_printf (_("expires: %s"), strtimestamp(keyrec->expiretime));
    }

  if (keyrec->flags&1)
    es_printf (" (%s)", _("revoked"));
  if(keyrec->flags&2)
    es_printf (" (%s)", _("disabled"));
  if(keyrec->flags&4)
    es_printf (" (%s)", _("expired"));

  es_printf ("\n");
}

/* Returns a keyrec (which must be freed) once a key is complete, and
   NULL otherwise.  Call with a NULL keystring once key parsing is
   complete to return any unfinished keys. */
static struct keyrec *
parse_keyrec(char *keystring)
{
  /* FIXME: Remove the static and put the data into the parms we use
     for the caller anyway.  */
  static struct keyrec *work=NULL;
  struct keyrec *ret=NULL;
  char *record;
  int i;

  if(keystring==NULL)
    {
      if(work==NULL)
	return NULL;
      else if(work->desc.mode==KEYDB_SEARCH_MODE_NONE)
	{
	  xfree(work);
	  return NULL;
	}
      else
	{
	  ret=work;
	  work=NULL;
	  return ret;
	}
    }

  if(work==NULL)
    {
      work=xmalloc_clear(sizeof(struct keyrec));
      work->uidbuf=iobuf_temp();
    }

  trim_trailing_ws (keystring, strlen (keystring));

  if((record=strsep(&keystring,":"))==NULL)
    return ret;

  if(ascii_strcasecmp("pub",record)==0)
    {
      char *tok;
      gpg_error_t err;

      if(work->desc.mode)
	{
	  ret=work;
	  work=xmalloc_clear(sizeof(struct keyrec));
	  work->uidbuf=iobuf_temp();
	}

      if((tok=strsep(&keystring,":"))==NULL)
	return ret;

      err = classify_user_id (tok, &work->desc, 1);
      if (err || (work->desc.mode    != KEYDB_SEARCH_MODE_SHORT_KID
                  && work->desc.mode != KEYDB_SEARCH_MODE_LONG_KID
                  && work->desc.mode != KEYDB_SEARCH_MODE_FPR16
                  && work->desc.mode != KEYDB_SEARCH_MODE_FPR20))
	{
	  work->desc.mode=KEYDB_SEARCH_MODE_NONE;
	  return ret;
	}

      /* Note all items after this are optional.  This allows us to
         have a pub line as simple as pub:keyid and nothing else. */

      work->lines++;

      if((tok=strsep(&keystring,":"))==NULL)
	return ret;

      work->type=atoi(tok);

      if((tok=strsep(&keystring,":"))==NULL)
	return ret;

      work->size=atoi(tok);

      if((tok=strsep(&keystring,":"))==NULL)
	return ret;

      if(atoi(tok)<=0)
	work->createtime=0;
      else
	work->createtime=atoi(tok);

      if((tok=strsep(&keystring,":"))==NULL)
	return ret;

      if(atoi(tok)<=0)
	work->expiretime=0;
      else
	{
	  work->expiretime=atoi(tok);
	  /* Force the 'e' flag on if this key is expired. */
	  if(work->expiretime<=make_timestamp())
	    work->flags|=4;
	}

      if((tok=strsep(&keystring,":"))==NULL)
	return ret;

      while(*tok)
	switch(*tok++)
	  {
	  case 'r':
	  case 'R':
	    work->flags|=1;
	    break;

	  case 'd':
	  case 'D':
	    work->flags|=2;
	    break;

	  case 'e':
	  case 'E':
	    work->flags|=4;
	    break;
	  }
    }
  else if(ascii_strcasecmp("uid",record)==0 && work->desc.mode)
    {
      char *userid,*tok,*decoded;

      if((tok=strsep(&keystring,":"))==NULL)
	return ret;

      if(strlen(tok)==0)
	return ret;

      userid=tok;

      /* By definition, de-%-encoding is always smaller than the
         original string so we can decode in place. */

      i=0;

      while(*tok)
	if(tok[0]=='%' && tok[1] && tok[2])
	  {
            int c;

	    userid[i] = (c=hextobyte(&tok[1])) == -1 ? '?' : c;
	    i++;
	    tok+=3;
	  }
	else
	  userid[i++]=*tok++;

      /* We don't care about the other info provided in the uid: line
         since no keyserver supports marking userids with timestamps
         or revoked/expired/disabled yet. */

      /* No need to check for control characters, as utf8_to_native
	 does this for us. */

      decoded=utf8_to_native(userid,i,0);
      if(strlen(decoded)>opt.screen_columns-10)
	decoded[opt.screen_columns-10]='\0';
      iobuf_writestr(work->uidbuf,decoded);
      xfree(decoded);
      iobuf_writestr(work->uidbuf,"\n\t");
      work->lines++;
    }

  /* Ignore any records other than "pri" and "uid" for easy future
     growth. */

  return ret;
}

/* Show a prompt and allow the user to select keys for retrieval.  */
static gpg_error_t
show_prompt (ctrl_t ctrl, KEYDB_SEARCH_DESC *desc, int numdesc,
             int count, const char *search)
{
  gpg_error_t err;
  char *answer = NULL;

  es_fflush (es_stdout);

  if (count && opt.command_fd == -1)
    {
      static int from = 1;
      tty_printf ("Keys %d-%d of %d for \"%s\".  ",
                  from, numdesc, count, search);
      from = numdesc + 1;
    }

 again:
  err = 0;
  xfree (answer);
  answer = cpr_get_no_help ("keysearch.prompt",
                            _("Enter number(s), N)ext, or Q)uit > "));
  /* control-d */
  if (answer[0]=='\x04')
    {
      tty_printf ("Q\n");
      answer[0] = 'q';
    }

  if (answer[0]=='q' || answer[0]=='Q')
    err = gpg_error (GPG_ERR_CANCELED);
  else if (atoi (answer) >= 1 && atoi (answer) <= numdesc)
    {
      char *split = answer;
      char *num;
      int numarray[50];
      int numidx = 0;
      int idx;

      while ((num = strsep (&split, " ,")))
	if (atoi (num) >= 1 && atoi (num) <= numdesc)
          {
            if (numidx >= DIM (numarray))
              {
                tty_printf ("Too many keys selected\n");
                goto again;
              }
            numarray[numidx++] = atoi (num);
          }

      if (!numidx)
        goto again;

      {
        KEYDB_SEARCH_DESC *selarray;

        selarray = xtrymalloc (numidx * sizeof *selarray);
        if (!selarray)
          {
            err = gpg_error_from_syserror ();
            goto leave;
          }
        for (idx = 0; idx < numidx; idx++)
          selarray[idx] = desc[numarray[idx]-1];
        err = keyserver_get (ctrl, selarray, numidx, NULL, NULL, NULL);
        xfree (selarray);
      }
    }

 leave:
  xfree (answer);
  return err;
}


/* This is a callback used by call-dirmngr.c to process the result of
   KS_SEARCH command.  If SPECIAL is 0, LINE is the actual data line
   received with all escaping removed and guaranteed to be exactly one
   line with stripped LF; an EOF is indicated by LINE passed as NULL.
   If special is 1, the line contains the source of the information
   (usually an URL).  LINE may be modified after return.  */
static gpg_error_t
search_line_handler (void *opaque, int special, char *line)
{
  struct search_line_handler_parm_s *parm = opaque;
  gpg_error_t err = 0;
  struct keyrec *keyrec;

  if (special == 1)
    {
      log_info ("data source: %s\n", line);
      return 0;
    }
  else if (special)
    {
      log_debug ("unknown value %d for special search callback", special);
      return 0;
    }

  if (parm->eof_seen && line)
    {
      log_debug ("ooops: unexpected data after EOF\n");
      line = NULL;
    }

  /* Print the received line.  */
  if (opt.with_colons && line)
    {
      es_printf ("%s\n", line);
    }

  /* Look for an info: line.  The only current info: values defined
     are the version and key count. */
  if (line && !parm->any_lines && !ascii_strncasecmp ("info:", line, 5))
    {
      char *str = line + 5;
      char *tok;

      if ((tok = strsep (&str, ":")))
        {
          int version;

          if (sscanf (tok, "%d", &version) !=1 )
            version = 1;

          if (version !=1 )
            {
              log_error (_("invalid keyserver protocol "
                           "(us %d!=handler %d)\n"), 1, version);
              return gpg_error (GPG_ERR_UNSUPPORTED_PROTOCOL);
            }
        }

      if ((tok = strsep (&str, ":"))
          && sscanf (tok, "%d", &parm->count) == 1)
        {
          if (!parm->count)
            parm->not_found = 1;/* Server indicated that no items follow.  */
          else if (parm->count < 0)
            parm->count = 10;   /* Bad value - assume something reasonable.  */
          else
            parm->validcount = 1; /* COUNT seems to be okay.  */
        }

      parm->any_lines = 1;
      return 0; /* Line processing finished.  */
    }

 again:
  if (line)
    keyrec = parse_keyrec (line);
  else
    {
      /* Received EOF - flush data */
      parm->eof_seen = 1;
      keyrec = parse_keyrec (NULL);
      if (!keyrec)
        {
          if (!parm->nkeys)
            parm->not_found = 1;  /* No keys at all.  */
          else
            {
              if (parm->nkeys != parm->count)
                parm->validcount = 0;

              if (!(opt.with_colons && opt.batch))
                {
                  err = show_prompt (parm->ctrl, parm->desc, parm->nkeys,
                                     parm->validcount? parm->count : 0,
                                     parm->searchstr_disp);
                  return err;
                }
            }
        }
    }

  /* Save the key in the key array.  */
  if (keyrec)
    {
      /* Allocate or enlarge the key array if needed.  */
      if (!parm->desc)
        {
          if (parm->count < 1)
            {
              parm->count = 10;
              parm->validcount = 0;
            }
          parm->desc = xtrymalloc (parm->count * sizeof *parm->desc);
          if (!parm->desc)
            {
              err = gpg_error_from_syserror ();
              iobuf_close (keyrec->uidbuf);
              xfree (keyrec);
              return err;
            }
        }
      else if (parm->nkeys == parm->count)
        {
          /* Keyserver sent more keys than claimed in the info: line. */
          KEYDB_SEARCH_DESC *tmp;
          int newcount = parm->count + 10;

          tmp = xtryrealloc (parm->desc, newcount * sizeof *parm->desc);
          if (!tmp)
            {
              err = gpg_error_from_syserror ();
              iobuf_close (keyrec->uidbuf);
              xfree (keyrec);
              return err;
            }
          parm->count = newcount;
          parm->desc = tmp;
          parm->validcount = 0;
        }

      parm->desc[parm->nkeys] = keyrec->desc;

      if (!opt.with_colons)
        {
          /* SCREEN_LINES - 1 for the prompt. */
          if (parm->numlines + keyrec->lines > opt.screen_lines - 1)
            {
              err = show_prompt (parm->ctrl, parm->desc, parm->nkeys,
                                 parm->validcount ? parm->count:0,
                                 parm->searchstr_disp);
              if (err)
                return err;
              parm->numlines = 0;
            }

          print_keyrec (parm->nkeys+1, keyrec);
        }

      parm->numlines += keyrec->lines;
      iobuf_close (keyrec->uidbuf);
      xfree (keyrec);

      parm->any_lines = 1;
      parm->nkeys++;

      /* If we are here due to a flush after the EOF, run again for
         the last prompt.  Fixme: Make this code better readable. */
      if (parm->eof_seen)
        goto again;
    }

  return 0;
}



int
keyserver_export (ctrl_t ctrl, strlist_t users)
{
  gpg_error_t err;
  strlist_t sl=NULL;
  KEYDB_SEARCH_DESC desc;
  int rc=0;

  /* Weed out descriptors that we don't support sending */
  for(;users;users=users->next)
    {
      err = classify_user_id (users->d, &desc, 1);
      if (err || (desc.mode    != KEYDB_SEARCH_MODE_SHORT_KID
                  && desc.mode != KEYDB_SEARCH_MODE_LONG_KID
                  && desc.mode != KEYDB_SEARCH_MODE_FPR16
                  && desc.mode != KEYDB_SEARCH_MODE_FPR20))
	{
	  log_error(_("\"%s\" not a key ID: skipping\n"),users->d);
	  continue;
	}
      else
	append_to_strlist(&sl,users->d);
    }

  if(sl)
    {
      rc = keyserver_put (ctrl, sl, opt.keyserver);
      free_strlist(sl);
    }

  return rc;
}


/* Structure to convey the arg to keyserver_retrieval_screener.  */
struct ks_retrieval_screener_arg_s
{
  KEYDB_SEARCH_DESC *desc;
  int ndesc;
};


/* Check whether a key matches the search description.  The function
   returns 0 if the key shall be imported.  */
static gpg_error_t
keyserver_retrieval_screener (kbnode_t keyblock, void *opaque)
{
  struct ks_retrieval_screener_arg_s *arg = opaque;
  KEYDB_SEARCH_DESC *desc = arg->desc;
  int ndesc = arg->ndesc;
  kbnode_t node;
  PKT_public_key *pk;
  int n;
  u32 keyid[2];
  byte fpr[MAX_FINGERPRINT_LEN];
  size_t fpr_len = 0;

  /* Secret keys are not expected from a keyserver.  We do not
     care about secret subkeys because the import code takes care
     of skipping them.  Not allowing an import of a public key
     with a secret subkey would make it too easy to inhibit the
     downloading of a public key.  Recall that keyservers do only
     limited checks.  */
  node = find_kbnode (keyblock, PKT_SECRET_KEY);
  if (node)
    return gpg_error (GPG_ERR_GENERAL);   /* Do not import. */

  if (!ndesc)
    return 0; /* Okay if no description given.  */

  /* Loop over all key packets.  */
  for (node = keyblock; node; node = node->next)
    {
      if (node->pkt->pkttype != PKT_PUBLIC_KEY
          && node->pkt->pkttype != PKT_PUBLIC_SUBKEY)
        continue;

      pk = node->pkt->pkt.public_key;
      fingerprint_from_pk (pk, fpr, &fpr_len);
      keyid_from_pk (pk, keyid);

      /* Compare requested and returned fingerprints if available. */
      for (n = 0; n < ndesc; n++)
        {
          if (desc[n].mode == KEYDB_SEARCH_MODE_FPR20)
            {
              if (fpr_len == 20 && !memcmp (fpr, desc[n].u.fpr, 20))
                return 0;
            }
          else if (desc[n].mode == KEYDB_SEARCH_MODE_FPR16)
            {
              if (fpr_len == 16 && !memcmp (fpr, desc[n].u.fpr, 16))
                return 0;
            }
          else if (desc[n].mode == KEYDB_SEARCH_MODE_LONG_KID)
            {
              if (keyid[0] == desc[n].u.kid[0] && keyid[1] == desc[n].u.kid[1])
                return 0;
            }
          else if (desc[n].mode == KEYDB_SEARCH_MODE_SHORT_KID)
            {
              if (keyid[1] == desc[n].u.kid[1])
                return 0;
            }
          else /* No keyid or fingerprint - can't check.  */
            return 0; /* allow import.  */
        }
    }

  return gpg_error (GPG_ERR_GENERAL);
}


int
keyserver_import (ctrl_t ctrl, strlist_t users)
{
  gpg_error_t err;
  KEYDB_SEARCH_DESC *desc;
  int num=100,count=0;
  int rc=0;

  /* Build a list of key ids */
  desc=xmalloc(sizeof(KEYDB_SEARCH_DESC)*num);

  for(;users;users=users->next)
    {
      err = classify_user_id (users->d, &desc[count], 1);
      if (err || (desc[count].mode    != KEYDB_SEARCH_MODE_SHORT_KID
                  && desc[count].mode != KEYDB_SEARCH_MODE_LONG_KID
                  && desc[count].mode != KEYDB_SEARCH_MODE_FPR16
                  && desc[count].mode != KEYDB_SEARCH_MODE_FPR20))
	{
	  log_error (_("\"%s\" not a key ID: skipping\n"), users->d);
	  continue;
	}

      count++;
      if(count==num)
	{
	  num+=100;
	  desc=xrealloc(desc,sizeof(KEYDB_SEARCH_DESC)*num);
	}
    }

  if(count>0)
    rc=keyserver_get (ctrl, desc, count, NULL, NULL, NULL);

  xfree(desc);

  return rc;
}


/* Import all keys that exactly match NAME */
int
keyserver_import_name (ctrl_t ctrl, const char *name,
                       unsigned char **fpr, size_t *fprlen,
                       struct keyserver_spec *keyserver)
{
  KEYDB_SEARCH_DESC desc;

  memset (&desc, 0, sizeof desc);

  desc.mode = KEYDB_SEARCH_MODE_EXACT;
  desc.u.name = name;

  return keyserver_get (ctrl, &desc, 1, keyserver, fpr, fprlen);
}


int
keyserver_import_fprint (ctrl_t ctrl, const byte *fprint,size_t fprint_len,
			 struct keyserver_spec *keyserver)
{
  KEYDB_SEARCH_DESC desc;

  memset(&desc,0,sizeof(desc));

  if(fprint_len==16)
    desc.mode=KEYDB_SEARCH_MODE_FPR16;
  else if(fprint_len==20)
    desc.mode=KEYDB_SEARCH_MODE_FPR20;
  else
    return -1;

  memcpy(desc.u.fpr,fprint,fprint_len);

  /* TODO: Warn here if the fingerprint we got doesn't match the one
     we asked for? */
  return keyserver_get (ctrl, &desc, 1, keyserver, NULL, NULL);
}

int
keyserver_import_keyid (ctrl_t ctrl,
                        u32 *keyid,struct keyserver_spec *keyserver)
{
  KEYDB_SEARCH_DESC desc;

  memset(&desc,0,sizeof(desc));

  desc.mode=KEYDB_SEARCH_MODE_LONG_KID;
  desc.u.kid[0]=keyid[0];
  desc.u.kid[1]=keyid[1];

  return keyserver_get (ctrl, &desc,1, keyserver, NULL, NULL);
}

/* code mostly stolen from do_export_stream */
static int
keyidlist(strlist_t users,KEYDB_SEARCH_DESC **klist,int *count,int fakev3)
{
  int rc=0,ndesc,num=100;
  KBNODE keyblock=NULL,node;
  KEYDB_HANDLE kdbhd;
  KEYDB_SEARCH_DESC *desc;
  strlist_t sl;

  *count=0;

  *klist=xmalloc(sizeof(KEYDB_SEARCH_DESC)*num);

  kdbhd = keydb_new ();
  keydb_disable_caching (kdbhd);  /* We are looping the search.  */

  if(!users)
    {
      ndesc = 1;
      desc = xmalloc_clear ( ndesc * sizeof *desc);
      desc[0].mode = KEYDB_SEARCH_MODE_FIRST;
    }
  else
    {
      for (ndesc=0, sl=users; sl; sl = sl->next, ndesc++)
	;
      desc = xmalloc ( ndesc * sizeof *desc);

      for (ndesc=0, sl=users; sl; sl = sl->next)
	{
          gpg_error_t err;
	  if (!(err = classify_user_id (sl->d, desc+ndesc, 1)))
	    ndesc++;
	  else
	    log_error (_("key \"%s\" not found: %s\n"),
		       sl->d, gpg_strerror (err));
	}
    }

  while (!(rc = keydb_search (kdbhd, desc, ndesc, NULL)))
    {
      if (!users)
	desc[0].mode = KEYDB_SEARCH_MODE_NEXT;

      /* read the keyblock */
      rc = keydb_get_keyblock (kdbhd, &keyblock );
      if( rc )
	{
	  log_error (_("error reading keyblock: %s\n"), g10_errstr(rc) );
	  goto leave;
	}

      if((node=find_kbnode(keyblock,PKT_PUBLIC_KEY)))
	{
	  /* This is to work around a bug in some keyservers (pksd and
             OKS) that calculate v4 RSA keyids as if they were v3 RSA.
             The answer is to refresh both the correct v4 keyid
             (e.g. 99242560) and the fake v3 keyid (e.g. 68FDDBC7).
             This only happens for key refresh using the HKP scheme
             and if the refresh-add-fake-v3-keyids keyserver option is
             set. */
	  if(fakev3 && is_RSA(node->pkt->pkt.public_key->pubkey_algo) &&
	     node->pkt->pkt.public_key->version>=4)
	    {
	      (*klist)[*count].mode=KEYDB_SEARCH_MODE_LONG_KID;
	      v3_keyid (node->pkt->pkt.public_key->pkey[0],
                        (*klist)[*count].u.kid);
	      (*count)++;

	      if(*count==num)
		{
		  num+=100;
		  *klist=xrealloc(*klist,sizeof(KEYDB_SEARCH_DESC)*num);
		}
	    }

	  /* v4 keys get full fingerprints.  v3 keys get long keyids.
             This is because it's easy to calculate any sort of keyid
             from a v4 fingerprint, but not a v3 fingerprint. */

	  if(node->pkt->pkt.public_key->version<4)
	    {
	      (*klist)[*count].mode=KEYDB_SEARCH_MODE_LONG_KID;
	      keyid_from_pk(node->pkt->pkt.public_key,
			    (*klist)[*count].u.kid);
	    }
	  else
	    {
	      size_t dummy;

	      (*klist)[*count].mode=KEYDB_SEARCH_MODE_FPR20;
	      fingerprint_from_pk(node->pkt->pkt.public_key,
				  (*klist)[*count].u.fpr,&dummy);
	    }

	  /* This is a little hackish, using the skipfncvalue as a
	     void* pointer to the keyserver spec, but we don't need
	     the skipfnc here, and it saves having an additional field
	     for this (which would be wasted space most of the
	     time). */

	  (*klist)[*count].skipfncvalue=NULL;

	  /* Are we honoring preferred keyservers? */
	  if(opt.keyserver_options.options&KEYSERVER_HONOR_KEYSERVER_URL)
	    {
	      PKT_user_id *uid=NULL;
	      PKT_signature *sig=NULL;

	      merge_keys_and_selfsig(keyblock);

	      for(node=node->next;node;node=node->next)
		{
		  if(node->pkt->pkttype==PKT_USER_ID
		     && node->pkt->pkt.user_id->is_primary)
		    uid=node->pkt->pkt.user_id;
		  else if(node->pkt->pkttype==PKT_SIGNATURE
			  && node->pkt->pkt.signature->
			  flags.chosen_selfsig && uid)
		    {
		      sig=node->pkt->pkt.signature;
		      break;
		    }
		}

	      /* Try and parse the keyserver URL.  If it doesn't work,
		 then we end up writing NULL which indicates we are
		 the same as any other key. */
	      if(sig)
		(*klist)[*count].skipfncvalue=parse_preferred_keyserver(sig);
	    }

	  (*count)++;

	  if(*count==num)
	    {
	      num+=100;
	      *klist=xrealloc(*klist,sizeof(KEYDB_SEARCH_DESC)*num);
	    }
	}
    }

  if (gpg_err_code (rc) == GPG_ERR_NOT_FOUND)
    rc = 0;

 leave:
  if(rc)
    xfree(*klist);
  xfree(desc);
  keydb_release(kdbhd);
  release_kbnode(keyblock);

  return rc;
}

/* Note this is different than the original HKP refresh.  It allows
   usernames to refresh only part of the keyring. */

int
keyserver_refresh (ctrl_t ctrl, strlist_t users)
{
  int rc,count,numdesc,fakev3=0;
  KEYDB_SEARCH_DESC *desc;
  unsigned int options=opt.keyserver_options.import_options;

  /* We switch merge-only on during a refresh, as 'refresh' should
     never import new keys, even if their keyids match. */
  opt.keyserver_options.import_options|=IMPORT_MERGE_ONLY;

  /* Similarly, we switch on fast-import, since refresh may make
     multiple import sets (due to preferred keyserver URLs).  We don't
     want each set to rebuild the trustdb.  Instead we do it once at
     the end here. */
  opt.keyserver_options.import_options|=IMPORT_FAST;

  /* If refresh_add_fake_v3_keyids is on and it's a HKP or MAILTO
     scheme, then enable fake v3 keyid generation. */
  if((opt.keyserver_options.options&KEYSERVER_ADD_FAKE_V3) && opt.keyserver
     && (ascii_strcasecmp(opt.keyserver->scheme,"hkp")==0 ||
	 ascii_strcasecmp(opt.keyserver->scheme,"mailto")==0))
    fakev3=1;

  rc=keyidlist(users,&desc,&numdesc,fakev3);
  if(rc)
    return rc;

  count=numdesc;
  if(count>0)
    {
      int i;

      /* Try to handle preferred keyserver keys first */
      for(i=0;i<numdesc;i++)
	{
	  if(desc[i].skipfncvalue)
	    {
	      struct keyserver_spec *keyserver=desc[i].skipfncvalue;

	      /* We use the keyserver structure we parsed out before.
		 Note that a preferred keyserver without a scheme://
		 will be interpreted as hkp:// */
	      rc = keyserver_get (ctrl, &desc[i], 1, keyserver, NULL, NULL);
	      if(rc)
		log_info(_("WARNING: unable to refresh key %s"
			   " via %s: %s\n"),keystr_from_desc(&desc[i]),
			 keyserver->uri,g10_errstr(rc));
	      else
		{
		  /* We got it, so mark it as NONE so we don't try and
		     get it again from the regular keyserver. */

		  desc[i].mode=KEYDB_SEARCH_MODE_NONE;
		  count--;
		}

	      free_keyserver_spec(keyserver);
	    }
	}
    }

  if(count>0)
    {
      if(opt.keyserver)
	{
	  if(count==1)
	    log_info(_("refreshing 1 key from %s\n"),opt.keyserver->uri);
	  else
	    log_info(_("refreshing %d keys from %s\n"),
		     count,opt.keyserver->uri);
	}

      rc=keyserver_get (ctrl, desc, numdesc, NULL, NULL, NULL);
    }

  xfree(desc);

  opt.keyserver_options.import_options=options;

  /* If the original options didn't have fast import, and the trustdb
     is dirty, rebuild. */
  if(!(opt.keyserver_options.import_options&IMPORT_FAST))
    check_or_update_trustdb ();

  return rc;
}


/* Search for keys on the keyservers.  The patterns are given in the
   string list TOKENS.  */
gpg_error_t
keyserver_search (ctrl_t ctrl, strlist_t tokens)
{
  gpg_error_t err;
  char *searchstr;
  struct search_line_handler_parm_s parm;

  memset (&parm, 0, sizeof parm);

  if (!tokens)
    return 0;  /* Return success if no patterns are given.  */

  if (!opt.keyserver)
    {
      log_error (_("no keyserver known (use option --keyserver)\n"));
      return gpg_error (GPG_ERR_NO_KEYSERVER);
    }

  /* Write global options */

  /* for(temp=opt.keyserver_options.other;temp;temp=temp->next) */
  /*   fprintf(spawn->tochild,"OPTION %s\n",temp->d); */

  /* Write per-keyserver options */

  /* for(temp=keyserver->options;temp;temp=temp->next) */
  /*   fprintf(spawn->tochild,"OPTION %s\n",temp->d); */

  {
    membuf_t mb;
    strlist_t item;

    init_membuf (&mb, 1024);
    for (item = tokens; item; item = item->next)
    {
      if (item != tokens)
        put_membuf (&mb, " ", 1);
      put_membuf_str (&mb, item->d);
    }
    put_membuf (&mb, "", 1); /* Append Nul.  */
    searchstr = get_membuf (&mb, NULL);
    if (!searchstr)
      {
        err = gpg_error_from_syserror ();
        goto leave;
      }
  }
  /* FIXME: Enable the next line */
  /* log_info (_("searching for \"%s\" from %s\n"), searchstr, keyserver->uri); */

  parm.ctrl = ctrl;
  if (searchstr)
    parm.searchstr_disp = utf8_to_native (searchstr, strlen (searchstr), 0);

  err = gpg_dirmngr_ks_search (ctrl, searchstr, search_line_handler, &parm);

  if (parm.not_found)
    {
      if (parm.searchstr_disp)
        log_info (_("key \"%s\" not found on keyserver\n"),
                  parm.searchstr_disp);
      else
        log_info (_("key not found on keyserver\n"));
    }

  if (gpg_err_code (err) == GPG_ERR_NO_KEYSERVER)
    log_error (_("no keyserver known (use option --keyserver)\n"));
  else if (err)
    log_error ("error searching keyserver: %s\n", gpg_strerror (err));

  /* switch(ret) */
  /*   { */
  /*   case KEYSERVER_SCHEME_NOT_FOUND: */
  /*     log_error(_("no handler for keyserver scheme '%s'\n"), */
  /*   	    opt.keyserver->scheme); */
  /*     break; */

  /*   case KEYSERVER_NOT_SUPPORTED: */
  /*     log_error(_("action '%s' not supported with keyserver " */
  /*   	      "scheme '%s'\n"), "search", opt.keyserver->scheme); */
  /*     break; */

  /*   case KEYSERVER_TIMEOUT: */
  /*     log_error(_("keyserver timed out\n")); */
  /*     break; */

  /*   case KEYSERVER_INTERNAL_ERROR: */
  /*   default: */
  /*     log_error(_("keyserver internal error\n")); */
  /*     break; */
  /*   } */

  /* return gpg_error (GPG_ERR_KEYSERVER); */


 leave:
  xfree (parm.desc);
  xfree (parm.searchstr_disp);
  xfree(searchstr);

  return err;
}

/* Helper for keyserver_get.  Here we only receive a chunk of the
   description to be processed in one batch.  This is required due to
   the limited number of patterns the dirmngr interface (KS_GET) can
   grok and to limit the amount of temporary required memory.  */
static gpg_error_t
keyserver_get_chunk (ctrl_t ctrl, KEYDB_SEARCH_DESC *desc, int ndesc,
                     int *r_ndesc_used,
                     void *stats_handle,
                     struct keyserver_spec *keyserver,
                     unsigned char **r_fpr, size_t *r_fprlen)

{
  gpg_error_t err = 0;
  char **pattern;
  int idx, npat;
  estream_t datastream;
  char *source = NULL;
  size_t linelen;  /* Estimated linelen for KS_GET.  */
  size_t n;

#define MAX_KS_GET_LINELEN 950  /* Somewhat lower than the real limit.  */

  *r_ndesc_used = 0;

  /* Create an array filled with a search pattern for each key.  The
     array is delimited by a NULL entry.  */
  pattern = xtrycalloc (ndesc+1, sizeof *pattern);
  if (!pattern)
    return gpg_error_from_syserror ();

  /* Note that we break the loop as soon as our estimation of the to
     be used line length reaches the limit.  But we do this only if we
     have processed at leas one search requests so that an overlong
     single request will be rejected only later by gpg_dirmngr_ks_get
     but we are sure that R_NDESC_USED has been updated.  This avoids
     a possible indefinite loop.  */
  linelen = 9; /* "KS_GET --" */
  for (npat=idx=0; idx < ndesc; idx++)
    {
      int quiet = 0;

      if (desc[idx].mode == KEYDB_SEARCH_MODE_FPR20
          || desc[idx].mode == KEYDB_SEARCH_MODE_FPR16)
        {
          n = 1+2+2*20;
          if (idx && linelen + n > MAX_KS_GET_LINELEN)
            break; /* Declare end of this chunk.  */
          linelen += n;

          pattern[npat] = xtrymalloc (n);
          if (!pattern[npat])
            err = gpg_error_from_syserror ();
          else
            {
              strcpy (pattern[npat], "0x");
              bin2hex (desc[idx].u.fpr,
                       desc[idx].mode == KEYDB_SEARCH_MODE_FPR20? 20 : 16,
                       pattern[npat]+2);
              npat++;
            }
        }
      else if(desc[idx].mode == KEYDB_SEARCH_MODE_LONG_KID)
        {
          n = 1+2+16;
          if (idx && linelen + n > MAX_KS_GET_LINELEN)
            break; /* Declare end of this chunk.  */
          linelen += n;

          pattern[npat] = xtryasprintf ("0x%08lX%08lX",
                                        (ulong)desc[idx].u.kid[0],
                                        (ulong)desc[idx].u.kid[1]);
          if (!pattern[npat])
            err = gpg_error_from_syserror ();
          else
            npat++;
        }
      else if(desc[idx].mode == KEYDB_SEARCH_MODE_SHORT_KID)
        {
          n = 1+2+8;
          if (idx && linelen + n > MAX_KS_GET_LINELEN)
            break; /* Declare end of this chunk.  */
          linelen += n;

          pattern[npat] = xtryasprintf ("0x%08lX", (ulong)desc[idx].u.kid[1]);
          if (!pattern[npat])
            err = gpg_error_from_syserror ();
          else
            npat++;
        }
      else if(desc[idx].mode == KEYDB_SEARCH_MODE_EXACT)
        {
          /* The Dirmngr also uses classify_user_id to detect the type
             of the search string.  By adding the '=' prefix we force
             Dirmngr's KS_GET to consider this an exact search string.
             (In gpg 1.4 and gpg 2.0 the keyserver helpers used the
             KS_GETNAME command to indicate this.)  */

          n = 1+1+strlen (desc[idx].u.name);
          if (idx && linelen + n > MAX_KS_GET_LINELEN)
            break; /* Declare end of this chunk.  */
          linelen += n;

          pattern[npat] = strconcat ("=", desc[idx].u.name, NULL);
          if (!pattern[npat])
            err = gpg_error_from_syserror ();
          else
            {
              npat++;
              quiet = 1;
            }
        }
      else if (desc[idx].mode == KEYDB_SEARCH_MODE_NONE)
        continue;
      else
        BUG();

      if (err)
        {
          for (idx=0; idx < npat; idx++)
            xfree (pattern[idx]);
          xfree (pattern);
          return err;
        }

      if (!quiet && keyserver)
        {
          if (keyserver->host)
            log_info (_("requesting key %s from %s server %s\n"),
                      keystr_from_desc (&desc[idx]),
                      keyserver->scheme, keyserver->host);
          else
            log_info (_("requesting key %s from %s\n"),
                      keystr_from_desc (&desc[idx]), keyserver->uri);
        }
    }

  /* Remember now many of search items were considered.  Note that
     this is different from NPAT.  */
  *r_ndesc_used = idx;

  err = gpg_dirmngr_ks_get (ctrl, pattern, &datastream, &source);
  for (idx=0; idx < npat; idx++)
    xfree (pattern[idx]);
  xfree (pattern);
  if (opt.verbose && source)
    log_info ("data source: %s\n", source);

  if (!err)
    {
      struct ks_retrieval_screener_arg_s screenerarg;

      /* FIXME: Check whether this comment should be moved to dirmngr.

         Slurp up all the key data.  In the future, it might be nice
         to look for KEY foo OUTOFBAND and FAILED indicators.  It's
         harmless to ignore them, but ignoring them does make gpg
         complain about "no valid OpenPGP data found".  One way to do
         this could be to continue parsing this line-by-line and make
         a temp iobuf for each key.  Note that we don't allow the
         import of secret keys from a keyserver.  Keyservers should
         never accept or send them but we better protect against rogue
         keyservers. */

      screenerarg.desc = desc;
      screenerarg.ndesc = *r_ndesc_used;
      import_keys_es_stream (ctrl, datastream, stats_handle,
                             r_fpr, r_fprlen,
                             (opt.keyserver_options.import_options
                              | IMPORT_NO_SECKEY),
                             keyserver_retrieval_screener, &screenerarg);
    }
  es_fclose (datastream);
  xfree (source);

  return err;
}


/* Retrieve a key from a keyserver.  The search pattern are in
   (DESC,NDESC).  Allowed search modes are keyid, fingerprint, and
   exact searches.  KEYSERVER gives an optional override keyserver. If
   (R_FPR,R_FPRLEN) are not NULL, they may return the fingerprint of a
   single imported key.  */
static gpg_error_t
keyserver_get (ctrl_t ctrl, KEYDB_SEARCH_DESC *desc, int ndesc,
               struct keyserver_spec *keyserver,
               unsigned char **r_fpr, size_t *r_fprlen)
{
  gpg_error_t err;
  void *stats_handle;
  int ndesc_used;
  int any_good = 0;

  stats_handle = import_new_stats_handle();

  for (;;)
    {
      err = keyserver_get_chunk (ctrl, desc, ndesc, &ndesc_used, stats_handle,
                                 keyserver, r_fpr, r_fprlen);
      if (!err)
        any_good = 1;
      if (err || ndesc_used >= ndesc)
        break; /* Error or all processed.  */
      /* Prepare for the next chunk.  */
      desc += ndesc_used;
      ndesc -= ndesc_used;
    }

  if (any_good)
    import_print_stats (stats_handle);

  import_release_stats_handle (stats_handle);
  return err;
}


/* Send all keys specified by KEYSPECS to the KEYSERVERS.  */
static gpg_error_t
keyserver_put (ctrl_t ctrl, strlist_t keyspecs,
               struct keyserver_spec *keyserver)

{
  gpg_error_t err;
  strlist_t kspec;

  if (!keyspecs)
    return 0;  /* Return success if the list is empty.  */

  if (!opt.keyserver)
    {
      log_error (_("no keyserver known (use option --keyserver)\n"));
      return gpg_error (GPG_ERR_NO_KEYSERVER);
    }

  for (kspec = keyspecs; kspec; kspec = kspec->next)
    {
      void *data;
      size_t datalen;
      kbnode_t keyblock;

      err = export_pubkey_buffer (ctrl, kspec->d,
                                  opt.keyserver_options.export_options,
                                  &keyblock, &data, &datalen);
      if (err)
        log_error (_("skipped \"%s\": %s\n"), kspec->d, gpg_strerror (err));
      else
        {
          if (keyserver->host)
            log_info (_("sending key %s to %s server %s\n"),
                      keystr (keyblock->pkt->pkt.public_key->keyid),
                      keyserver->scheme, keyserver->host);
          else
            log_info (_("sending key %s to %s\n"),
                      keystr (keyblock->pkt->pkt.public_key->keyid),
                      keyserver->uri);

          err = gpg_dirmngr_ks_put (ctrl, data, datalen, keyblock);
          release_kbnode (keyblock);
          xfree (data);
          if (err)
            log_error (_("keyserver send failed: %s\n"), gpg_strerror (err));
        }
    }


  return err;

}


/* Loop over all URLs in STRLIST and fetch the key at that URL.  Note
   that the fetch operation ignores the configured key servers and
   instead directly retrieves the keys.  */
int
keyserver_fetch (ctrl_t ctrl, strlist_t urilist)
{
  gpg_error_t err;
  strlist_t sl;
  estream_t datastream;
  unsigned int save_options = opt.keyserver_options.import_options;

  /* Switch on fast-import, since fetch can handle more than one
     import and we don't want each set to rebuild the trustdb.
     Instead we do it once at the end. */
  opt.keyserver_options.import_options |= IMPORT_FAST;

  for (sl=urilist; sl; sl=sl->next)
    {
      if (!opt.quiet)
        log_info (_("requesting key from '%s'\n"), sl->d);

      err = gpg_dirmngr_ks_fetch (ctrl, sl->d, &datastream);
      if (!err)
        {
          void *stats_handle;

          stats_handle = import_new_stats_handle();
          import_keys_es_stream (ctrl, datastream, stats_handle, NULL, NULL,
                                 opt.keyserver_options.import_options,
                                 NULL, NULL);

          import_print_stats (stats_handle);
          import_release_stats_handle (stats_handle);
        }
      else
        log_info (_("WARNING: unable to fetch URI %s: %s\n"),
                  sl->d, gpg_strerror (err));
      es_fclose (datastream);
    }

  opt.keyserver_options.import_options = save_options;

  /* If the original options didn't have fast import, and the trustdb
     is dirty, rebuild. */
  if (!(opt.keyserver_options.import_options&IMPORT_FAST))
    check_or_update_trustdb ();

  return 0;
}


/* Import key in a CERT or pointed to by a CERT */
int
keyserver_import_cert (ctrl_t ctrl,
                       const char *name,unsigned char **fpr,size_t *fpr_len)
{
  gpg_error_t err;
  char *domain,*look,*url;
  estream_t key;


  look=xstrdup(name);

  domain=strrchr(look,'@');
  if(domain)
    *domain='.';

  err = get_dns_cert (look, &key, fpr, fpr_len, &url);
  if (err)
    ;
  else if (key)
    {
      int armor_status=opt.no_armor;

      /* CERTs are always in binary format */
      opt.no_armor=1;

      err = import_keys_es_stream (ctrl, key, NULL, fpr, fpr_len,
                                   (opt.keyserver_options.import_options
                                    | IMPORT_NO_SECKEY),
                                   NULL, NULL);

      opt.no_armor=armor_status;

      es_fclose (key);
      key = NULL;
    }
  else if (*fpr)
    {
      /* We only consider the IPGP type if a fingerprint was provided.
	 This lets us select the right key regardless of what a URL
	 points to, or get the key from a keyserver. */
      if(url)
	{
	  struct keyserver_spec *spec;

	  spec=parse_keyserver_uri(url,1,NULL,0);
	  if(spec)
	    {
	      err = keyserver_import_fprint (ctrl, *fpr,*fpr_len,spec);
	      free_keyserver_spec(spec);
	    }
	}
      else if(opt.keyserver)
	{
	  /* If only a fingerprint is provided, try and fetch it from
	     our --keyserver */

	  err = keyserver_import_fprint (ctrl, *fpr,*fpr_len,opt.keyserver);
	}
      else
	log_info(_("no keyserver known (use option --keyserver)\n"));

      /* Give a better string here? "CERT fingerprint for \"%s\"
	 found, but no keyserver" " known (use option
	 --keyserver)\n" ? */

    }

  xfree(url);
  xfree(look);

  return err;
}

/* Import key pointed to by a PKA record. Return the requested
   fingerprint in fpr. */
int
keyserver_import_pka (ctrl_t ctrl,
                      const char *name,unsigned char **fpr,size_t *fpr_len)
{
  char *uri;
  int rc = G10ERR_NO_PUBKEY;

  *fpr = xmalloc (20);
  *fpr_len = 20;

  uri = get_pka_info (name, *fpr);
  if (uri && *uri)
    {
      /* An URI is available.  Lookup the key. */
      struct keyserver_spec *spec;
      spec = parse_keyserver_uri (uri, 1, NULL, 0);
      if (spec)
	{
	  rc = keyserver_import_fprint (ctrl, *fpr, 20, spec);
	  free_keyserver_spec (spec);
	}
      xfree (uri);
    }

  if (rc)
    {
      xfree(*fpr);
      *fpr = NULL;
    }

  return rc;
}


/* Import a key by name using LDAP */
int
keyserver_import_ldap (ctrl_t ctrl,
                       const char *name, unsigned char **fpr, size_t *fprlen)
{
  (void)ctrl;
  (void)name;
  (void)fpr;
  (void)fprlen;
  return gpg_error (GPG_ERR_NOT_IMPLEMENTED); /*FIXME*/
#if 0
  char *domain;
  struct keyserver_spec *keyserver;
  strlist_t list=NULL;
  int rc,hostlen=1;
#ifdef USE_DNS_SRV
  struct srventry *srvlist=NULL;
  int srvcount,i;
  char srvname[MAXDNAME];
#endif

  /* Parse out the domain */
  domain=strrchr(name,'@');
  if(!domain)
    return G10ERR_GENERAL;

  domain++;

  keyserver=xmalloc_clear(sizeof(struct keyserver_spec));
  keyserver->scheme=xstrdup("ldap");
  keyserver->host=xmalloc(1);
  keyserver->host[0]='\0';

#ifdef USE_DNS_SRV
  snprintf(srvname,MAXDNAME,"_pgpkey-ldap._tcp.%s",domain);

  srvcount=getsrv(srvname,&srvlist);

  for(i=0;i<srvcount;i++)
    {
      hostlen+=strlen(srvlist[i].target)+1;
      keyserver->host=xrealloc(keyserver->host,hostlen);

      strcat(keyserver->host,srvlist[i].target);

      if(srvlist[i].port!=389)
	{
	  char port[7];

	  hostlen+=6; /* a colon, plus 5 digits (unsigned 16-bit value) */
	  keyserver->host=xrealloc(keyserver->host,hostlen);

	  snprintf(port,7,":%u",srvlist[i].port);
	  strcat(keyserver->host,port);
	}

      strcat(keyserver->host," ");
    }

  free(srvlist);
#endif

  /* If all else fails, do the PGP Universal trick of
     ldap://keys.(domain) */

  hostlen+=5+strlen(domain);
  keyserver->host=xrealloc(keyserver->host,hostlen);
  strcat(keyserver->host,"keys.");
  strcat(keyserver->host,domain);

  append_to_strlist(&list,name);

  rc = gpg_error (GPG_ERR_NOT_IMPLEMENTED); /*FIXME*/
       /* keyserver_work (ctrl, KS_GETNAME, list, NULL, */
       /*                 0, fpr, fpr_len, keyserver); */

  free_strlist(list);

  free_keyserver_spec(keyserver);

  return rc;
#endif
}