Adding upstream version 2.2.40.upstream/2.2.40

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 915 insertions, 0 deletions

diff --git a/kbx/keybox-dump.c b/kbx/keybox-dump.c
new file mode 100644
index 0000000..3e66b72
--- /dev/null
+++ b/kbx/keybox-dump.c
@@ -0,0 +1,915 @@
+/* keybox-dump.c - Debug helpers
+ *	Copyright (C) 2001, 2003 Free Software Foundation, Inc.
+ *
+ * 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 <https://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+
+#include "keybox-defs.h"
+#include <gcrypt.h>
+#include "../common/host2net.h"
+
+/* Argg, we can't include ../common/util.h */
+char *bin2hexcolon (const void *buffer, size_t length, char *stringbuf);
+
+#define get32(a) buf32_to_ulong ((a))
+#define get16(a) buf16_to_ulong ((a))
+
+
+void
+print_string (FILE *fp, const byte *p, size_t n, int delim)
+{
+  for ( ; n; n--, p++ )
+    {
+      if (*p < 0x20 || (*p >= 0x7f && *p < 0xa0) || *p == delim)
+        {
+          putc('\\', fp);
+          if( *p == '\n' )
+            putc('n', fp);
+          else if( *p == '\r' )
+            putc('r', fp);
+          else if( *p == '\f' )
+            putc('f', fp);
+          else if( *p == '\v' )
+            putc('v', fp);
+          else if( *p == '\b' )
+            putc('b', fp);
+          else if( !*p )
+            putc('0', fp);
+          else
+            fprintf(fp, "x%02x", *p );
+	}
+      else
+        putc(*p, fp);
+    }
+}
+
+
+static int
+print_checksum (const byte *buffer, size_t length, size_t unhashed, FILE *fp)
+{
+  const byte *p;
+  int i;
+  int hashlen;
+  unsigned char digest[20];
+
+  fprintf (fp, "Checksum: ");
+  if (unhashed && unhashed < 20)
+    {
+      fputs ("[specified unhashed sized too short]\n", fp);
+      return 0;
+    }
+  if (!unhashed)
+    {
+      unhashed = 16;
+      hashlen = 16;
+    }
+  else
+    hashlen = 20;
+
+  if (length < 5+unhashed)
+    {
+      fputs ("[blob too short for a checksum]\n", fp);
+      return 0;
+    }
+
+  p = buffer + length - hashlen;
+  for (i=0; i < hashlen; p++, i++)
+    fprintf (fp, "%02x", *p);
+
+  if (hashlen == 16) /* Compatibility method.  */
+    {
+      gcry_md_hash_buffer (GCRY_MD_MD5, digest, buffer, length - 16);
+      if (!memcmp (buffer + length - 16, digest, 16))
+        fputs (" [valid]\n", fp);
+      else
+        fputs (" [bad]\n", fp);
+    }
+  else
+    {
+      gcry_md_hash_buffer (GCRY_MD_SHA1, digest, buffer, length - unhashed);
+      if (!memcmp (buffer + length - hashlen, digest, hashlen))
+        fputs (" [valid]\n", fp);
+      else
+        fputs (" [bad]\n", fp);
+    }
+  return 0;
+}
+
+
+static int
+dump_header_blob (const byte *buffer, size_t length, FILE *fp)
+{
+  unsigned long n;
+
+  if (length < 32)
+    {
+      fprintf (fp, "[blob too short]\n");
+      return -1;
+    }
+  fprintf (fp, "Version: %d\n", buffer[5]);
+
+  n = get16 (buffer + 6);
+  fprintf( fp, "Flags:   %04lX", n);
+  if (n)
+    {
+      int any = 0;
+
+      fputs (" (", fp);
+      if ((n & 2))
+        {
+          if (any)
+            putc (',', fp);
+          fputs ("openpgp", fp);
+          any++;
+        }
+      putc (')', fp);
+    }
+  putc ('\n', fp);
+
+  if ( memcmp (buffer+8, "KBXf", 4))
+    fprintf (fp, "[Error: invalid magic number]\n");
+
+  n = get32 (buffer+16);
+  fprintf( fp, "created-at: %lu\n", n );
+  n = get32 (buffer+20);
+  fprintf( fp, "last-maint: %lu\n", n );
+
+  return 0;
+}
+
+
+/* Dump one block to FP */
+int
+_keybox_dump_blob (KEYBOXBLOB blob, FILE *fp)
+{
+  const byte *buffer;
+  size_t length;
+  int type, i;
+  ulong n, nkeys, keyinfolen;
+  ulong nuids, uidinfolen;
+  ulong nsigs, siginfolen;
+  ulong rawdata_off, rawdata_len;
+  ulong nserial;
+  ulong unhashed;
+  const byte *p;
+  const byte *pend;
+  int is_fpr32;  /* blob version 2 */
+
+  buffer = _keybox_get_blob_image (blob, &length);
+
+  if (length < 32)
+    {
+      fprintf (fp, "[blob too short]\n");
+      return -1;
+    }
+
+  n = get32( buffer );
+  if (n > length)
+    fprintf (fp, "[blob larger than length - output truncated]\n");
+  else
+    length = n;  /* ignore the rest */
+
+  fprintf (fp, "Length: %lu\n", n );
+  type = buffer[4];
+  switch (type)
+    {
+    case KEYBOX_BLOBTYPE_EMPTY:
+      fprintf (fp, "Type:   Empty\n");
+      return 0;
+
+    case KEYBOX_BLOBTYPE_HEADER:
+      fprintf (fp, "Type:   Header\n");
+      return dump_header_blob (buffer, length, fp);
+    case KEYBOX_BLOBTYPE_PGP:
+      fprintf (fp, "Type:   OpenPGP\n");
+      break;
+    case KEYBOX_BLOBTYPE_X509:
+      fprintf (fp, "Type:   X.509\n");
+      break;
+    default:
+      fprintf (fp, "Type:   %d\n", type);
+      fprintf (fp, "[can't dump this blob type]\n");
+      return 0;
+    }
+  /* Here we have either BLOGTYPE_X509 or BLOBTYPE_OPENPGP */
+  fprintf (fp, "Version: %d\n", buffer[5]);
+  is_fpr32 = buffer[5] == 2;
+
+  if (length < 40)
+    {
+      fprintf (fp, "[blob too short]\n");
+      return -1;
+    }
+
+  n = get16 (buffer + 6);
+  fprintf( fp, "Blob-Flags: %04lX", n);
+  if (n)
+    {
+      int any = 0;
+
+      fputs (" (", fp);
+      if ((n & 1))
+        {
+          fputs ("secret", fp);
+          any++;
+        }
+      if ((n & 2))
+        {
+          if (any)
+            putc (',', fp);
+          fputs ("ephemeral", fp);
+          any++;
+        }
+      putc (')', fp);
+    }
+  putc ('\n', fp);
+
+  rawdata_off = get32 (buffer + 8);
+  rawdata_len = get32 (buffer + 12);
+
+  fprintf( fp, "Data-Offset: %lu\n", rawdata_off );
+  fprintf( fp, "Data-Length: %lu\n", rawdata_len );
+  if (rawdata_off > length || rawdata_len > length
+      || rawdata_off+rawdata_len > length
+      || rawdata_len + 4 > length
+      || rawdata_off+rawdata_len + 4 > length)
+    {
+      fprintf (fp, "[Error: raw data larger than blob]\n");
+      return -1;
+    }
+
+  if (rawdata_off > length
+      || rawdata_len > length
+      || rawdata_off + rawdata_len > length)
+    {
+      fprintf (fp, "[Error: unhashed data larger than blob]\n");
+      return -1;
+    }
+  unhashed = length - rawdata_off - rawdata_len;
+  fprintf (fp, "Unhashed: %lu\n", unhashed);
+
+  nkeys = get16 (buffer + 16);
+  fprintf (fp, "Key-Count: %lu\n", nkeys );
+  if (!nkeys)
+    fprintf (fp, "[Error: no keys]\n");
+  if (nkeys > 1 && type == KEYBOX_BLOBTYPE_X509)
+    fprintf (fp, "[Error: only one key allowed for X509]\n");
+
+  keyinfolen = get16 (buffer + 18 );
+  fprintf (fp, "Key-Info-Length: %lu\n", keyinfolen);
+  p = buffer + 20;
+  pend = buffer + length;
+  for (n=0; n < nkeys; n++, p += keyinfolen)
+    {
+      ulong kidoff, kflags;
+
+      if (p + keyinfolen >= pend)
+        {
+          fprintf (fp, "[Error: key data larger than blob]\n");
+          return -1;
+        }
+
+      fprintf (fp, "Key-Fpr[%lu]: ", n );
+      if (is_fpr32)
+        {
+          if (p + 32 + 2 >= pend)
+            {
+              fprintf (fp, "[Error: fingerprint data larger than blob]\n");
+              return -1;
+            }
+          kflags = get16 (p + 32 );
+          for (i=0; i < ((kflags & 0x80)?32:20); i++ )
+            fprintf (fp, "%02X", p[i]);
+        }
+      else
+        {
+          if (p + 20 + 4 >= pend)
+            {
+              fprintf (fp, "[Error: fingerprint data larger than blob]\n");
+              return -1;
+            }
+          for (i=0; i < 20; i++ )
+            fprintf (fp, "%02X", p[i]);
+          kidoff = get32 (p + 20);
+          fprintf (fp, "\nKey-Kid-Off[%lu]: %lu\n", n, kidoff );
+          fprintf (fp, "Key-Kid[%lu]: ", n );
+
+          if (p + kidoff + 8 >= pend)
+            {
+              fprintf (fp, "[Error: fingerprint data larger than blob]\n");
+              return -1;
+            }
+          for (i=0; i < 8; i++ )
+            fprintf (fp, "%02X", buffer[kidoff+i] );
+          if (p + 24 >= pend)
+            {
+              fprintf (fp, "[Error: fingerprint data larger than blob]\n");
+              return -1;
+            }
+          kflags = get16 (p + 24);
+        }
+      fprintf( fp, "\nKey-Flags[%lu]: %04lX\n", n, kflags);
+    }
+
+  /* serial number */
+  if (p + 2 >= pend)
+    {
+      fprintf (fp, "[Error: data larger than blob]\n");
+      return -1;
+    }
+  fputs ("Serial-No: ", fp);
+  nserial = get16 (p);
+  p += 2;
+  if (!nserial)
+    fputs ("none", fp);
+  else
+    {
+      if (p + nserial >= pend)
+        {
+          fprintf (fp, "[Error: data larger than blob]\n");
+          return -1;
+        }
+      for (; nserial; nserial--, p++)
+        fprintf (fp, "%02X", *p);
+    }
+  putc ('\n', fp);
+
+  /* user IDs */
+  if (p + 4 >= pend)
+    {
+      fprintf (fp, "[Error: data larger than blob]\n");
+      return -1;
+    }
+  nuids = get16 (p);
+  fprintf (fp, "Uid-Count: %lu\n", nuids );
+  uidinfolen = get16  (p + 2);
+  fprintf (fp, "Uid-Info-Length: %lu\n", uidinfolen);
+  p += 4;
+  for (n=0; n < nuids; n++, p += uidinfolen)
+    {
+      ulong uidoff, uidlen, uflags;
+
+      if (p + uidinfolen >= pend || uidinfolen < 8)
+        {
+          fprintf (fp, "[Error: data larger than blob]\n");
+          return -1;
+        }
+
+      uidoff = get32( p );
+      uidlen = get32( p+4 );
+      if (type == KEYBOX_BLOBTYPE_X509 && !n)
+        {
+          fprintf (fp, "Issuer-Off: %lu\n", uidoff );
+          fprintf (fp, "Issuer-Len: %lu\n", uidlen );
+          fprintf (fp, "Issuer: \"");
+        }
+      else if (type == KEYBOX_BLOBTYPE_X509 && n == 1)
+        {
+          fprintf (fp, "Subject-Off: %lu\n", uidoff );
+          fprintf (fp, "Subject-Len: %lu\n", uidlen );
+          fprintf (fp, "Subject: \"");
+        }
+      else
+        {
+          fprintf (fp, "Uid-Off[%lu]: %lu\n", n, uidoff );
+          fprintf (fp, "Uid-Len[%lu]: %lu\n", n, uidlen );
+          fprintf (fp, "Uid[%lu]: \"", n );
+        }
+
+      if (uidoff + uidlen > length
+          || uidoff + uidlen < uidoff
+          || uidoff + uidlen < uidlen)
+        {
+          fprintf (fp, "[Error: data larger than blob]\n");
+          return -1;
+        }
+      print_string (fp, buffer+uidoff, uidlen, '\"');
+      fputs ("\"\n", fp);
+      if (p + 8 + 2 + 1 >= pend)
+        {
+          fprintf (fp, "[Error: data larger than blob]\n");
+          return -1;
+        }
+      uflags = get16 (p + 8);
+      if (type == KEYBOX_BLOBTYPE_X509 && !n)
+        {
+          fprintf (fp, "Issuer-Flags: %04lX\n", uflags );
+          fprintf (fp, "Issuer-Validity: %d\n", p[10] );
+        }
+      else if (type == KEYBOX_BLOBTYPE_X509 && n == 1)
+        {
+          fprintf (fp, "Subject-Flags: %04lX\n", uflags );
+          fprintf (fp, "Subject-Validity: %d\n", p[10] );
+        }
+      else
+        {
+          fprintf (fp, "Uid-Flags[%lu]: %04lX\n", n, uflags );
+          fprintf (fp, "Uid-Validity[%lu]: %d\n", n, p[10] );
+        }
+    }
+
+  if (p + 2 + 2 >= pend)
+    {
+      fprintf (fp, "[Error: data larger than blob]\n");
+      return -1;
+    }
+  nsigs = get16 (p);
+  fprintf (fp, "Sig-Count: %lu\n", nsigs );
+  siginfolen = get16 (p + 2);
+  fprintf (fp, "Sig-Info-Length: %lu\n", siginfolen );
+  p += 4;
+  {
+    int in_range = 0;
+    ulong first = 0;
+
+    for (n=0; n < nsigs; n++, p += siginfolen)
+      {
+        ulong sflags;
+
+        if (p + siginfolen >= pend || siginfolen < 4)
+          {
+            fprintf (fp, "[Error: data larger than blob]\n");
+            return -1;
+          }
+        sflags = get32 (p);
+        if (!in_range && !sflags)
+          {
+            in_range = 1;
+            first = n;
+            continue;
+          }
+        if (in_range && !sflags)
+          continue;
+        if (in_range)
+          {
+            fprintf (fp, "Sig-Expire[%lu-%lu]: [not checked]\n", first, n-1);
+            in_range = 0;
+          }
+
+        fprintf (fp, "Sig-Expire[%lu]: ", n );
+        if (!sflags)
+          fputs ("[not checked]", fp);
+        else if (sflags == 1 )
+          fputs ("[missing key]", fp);
+        else if (sflags == 2 )
+          fputs ("[bad signature]", fp);
+        else if (sflags < 0x10000000)
+          fprintf (fp, "[bad flag %0lx]", sflags);
+        else if (sflags == (ulong)(-1))
+          fputs ("[good - does not expire]", fp );
+        else
+          fprintf (fp, "[good - expires at %lu]", sflags);
+        putc ('\n', fp );
+      }
+    if (in_range)
+      fprintf (fp, "Sig-Expire[%lu-%lu]: [not checked]\n", first, n-1);
+  }
+
+  if (p + 16 >= pend)
+    {
+      fprintf (fp, "[Error: data larger than blob]\n");
+      return -1;
+    }
+  fprintf (fp, "Ownertrust: %d\n", p[0] );
+  fprintf (fp, "All-Validity: %d\n", p[1] );
+  p += 4;
+  n = get32 (p);
+  p += 4;
+  fprintf (fp, "Recheck-After: %lu\n", n );
+  n = get32 (p );
+  p += 4;
+  fprintf( fp, "Latest-Timestamp: %lu\n", n );
+  n = get32 (p );
+  p += 4;
+  fprintf (fp, "Created-At: %lu\n", n );
+
+  if (p + 4 >= pend)
+    {
+      fprintf (fp, "[Error: data larger than blob]\n");
+      return -1;
+    }
+  n = get32 (p );
+  fprintf (fp, "Reserved-Space: %lu\n", n );
+
+  if (n >= 4 && unhashed >= 24)
+    {
+      n = get32 ( buffer + length - unhashed);
+      fprintf (fp, "Storage-Flags: %08lx\n", n );
+    }
+  print_checksum (buffer, length, unhashed, fp);
+  return 0;
+}
+
+
+/* Compute the SHA-1 checksum of the rawdata in BLOB and put it into
+   DIGEST. */
+static int
+hash_blob_rawdata (KEYBOXBLOB blob, unsigned char *digest)
+{
+  const unsigned char *buffer;
+  size_t n, length;
+  int type;
+  ulong rawdata_off, rawdata_len;
+
+  buffer = _keybox_get_blob_image (blob, &length);
+
+  if (length < 32)
+    return -1;
+  n = get32 (buffer);
+  if (n < length)
+    length = n;  /* Blob larger than length in header - ignore the rest. */
+
+  type = buffer[4];
+  switch (type)
+    {
+    case KEYBOX_BLOBTYPE_PGP:
+    case KEYBOX_BLOBTYPE_X509:
+      break;
+
+    case KEYBOX_BLOBTYPE_EMPTY:
+    case KEYBOX_BLOBTYPE_HEADER:
+    default:
+      memset (digest, 0, 20);
+      return 0;
+    }
+
+  if (length < 40)
+    return -1;
+
+  rawdata_off = get32 (buffer + 8);
+  rawdata_len = get32 (buffer + 12);
+
+  if (rawdata_off > length || rawdata_len > length
+      || rawdata_off+rawdata_off > length)
+    return -1; /* Out of bounds.  */
+
+  gcry_md_hash_buffer (GCRY_MD_SHA1, digest, buffer+rawdata_off, rawdata_len);
+  return 0;
+}
+
+
+struct file_stats_s
+{
+  unsigned long too_short_blobs;
+  unsigned long too_large_blobs;
+  unsigned long total_blob_count;
+  unsigned long empty_blob_count;
+  unsigned long header_blob_count;
+  unsigned long pgp_blob_count;
+  unsigned long x509_blob_count;
+  unsigned long unknown_blob_count;
+  unsigned long non_flagged;
+  unsigned long secret_flagged;
+  unsigned long ephemeral_flagged;
+  unsigned long skipped_long_blobs;
+};
+
+static int
+update_stats (KEYBOXBLOB blob, struct file_stats_s *s)
+{
+  const unsigned char *buffer;
+  size_t length;
+  int type;
+  unsigned long n;
+
+  buffer = _keybox_get_blob_image (blob, &length);
+  if (length < 32)
+    {
+      s->too_short_blobs++;
+      return -1;
+    }
+
+  n = get32( buffer );
+  if (n > length)
+    s->too_large_blobs++;
+  else
+    length = n;  /* ignore the rest */
+
+  s->total_blob_count++;
+  type = buffer[4];
+  switch (type)
+    {
+    case KEYBOX_BLOBTYPE_EMPTY:
+      s->empty_blob_count++;
+      return 0;
+    case KEYBOX_BLOBTYPE_HEADER:
+      s->header_blob_count++;
+      return 0;
+    case KEYBOX_BLOBTYPE_PGP:
+      s->pgp_blob_count++;
+      break;
+    case KEYBOX_BLOBTYPE_X509:
+      s->x509_blob_count++;
+      break;
+    default:
+      s->unknown_blob_count++;
+      return 0;
+    }
+
+  if (length < 40)
+    {
+      s->too_short_blobs++;
+      return -1;
+    }
+
+  n = get16 (buffer + 6);
+  if (n)
+    {
+      if ((n & 1))
+        s->secret_flagged++;
+      if ((n & 2))
+        s->ephemeral_flagged++;
+    }
+  else
+    s->non_flagged++;
+
+  return 0;
+}
+
+
+
+static estream_t
+open_file (const char **filename, FILE *outfp)
+{
+  estream_t fp;
+
+  if (!*filename)
+    {
+      *filename = "-";
+      fp = es_stdin;
+    }
+  else
+    fp = es_fopen (*filename, "rb");
+  if (!fp)
+    {
+      int save_errno = errno;
+      fprintf (outfp, "can't open '%s': %s\n", *filename, strerror(errno));
+      gpg_err_set_errno (save_errno);
+    }
+  return fp;
+}
+
+
+
+int
+_keybox_dump_file (const char *filename, int stats_only, FILE *outfp)
+{
+  estream_t fp;
+  KEYBOXBLOB blob;
+  int rc;
+  unsigned long count = 0;
+  struct file_stats_s stats;
+  int skipped_deleted;
+
+  memset (&stats, 0, sizeof stats);
+
+  if (!(fp = open_file (&filename, outfp)))
+    return gpg_error_from_syserror ();
+
+  for (;;)
+    {
+      rc = _keybox_read_blob (&blob, fp, &skipped_deleted);
+      if (gpg_err_code (rc) == GPG_ERR_TOO_LARGE
+          && gpg_err_source (rc) == GPG_ERR_SOURCE_KEYBOX)
+        {
+          if (stats_only)
+            stats.skipped_long_blobs++;
+          else
+            {
+              fprintf (outfp, "BEGIN-RECORD: %lu\n", count );
+              fprintf (outfp, "# Record too large\nEND-RECORD\n");
+            }
+          count++;
+          continue;
+        }
+      if (rc)
+        break;
+
+      count += skipped_deleted;
+
+      if (stats_only)
+        {
+          stats.total_blob_count += skipped_deleted;
+          stats.empty_blob_count += skipped_deleted;
+          update_stats (blob, &stats);
+        }
+      else
+        {
+          fprintf (outfp, "BEGIN-RECORD: %lu\n", count );
+          _keybox_dump_blob (blob, outfp);
+          fprintf (outfp, "END-RECORD\n");
+        }
+      _keybox_release_blob (blob);
+      count++;
+    }
+  if (rc == -1)
+    rc = 0;
+  if (rc)
+    fprintf (outfp, "# error reading '%s': %s\n", filename, gpg_strerror (rc));
+
+  if (fp != es_stdin)
+    es_fclose (fp);
+
+  if (stats_only)
+    {
+      fprintf (outfp,
+               "Total number of blobs: %8lu\n"
+               "               header: %8lu\n"
+               "                empty: %8lu\n"
+               "              openpgp: %8lu\n"
+               "                 x509: %8lu\n"
+               "          non flagged: %8lu\n"
+               "       secret flagged: %8lu\n"
+               "    ephemeral flagged: %8lu\n",
+               stats.total_blob_count,
+               stats.header_blob_count,
+               stats.empty_blob_count,
+               stats.pgp_blob_count,
+               stats.x509_blob_count,
+               stats.non_flagged,
+               stats.secret_flagged,
+               stats.ephemeral_flagged);
+        if (stats.skipped_long_blobs)
+          fprintf (outfp, "   skipped long blobs: %8lu\n",
+                   stats.skipped_long_blobs);
+        if (stats.unknown_blob_count)
+          fprintf (outfp, "   unknown blob types: %8lu\n",
+                   stats.unknown_blob_count);
+        if (stats.too_short_blobs)
+          fprintf (outfp, "      too short blobs: %8lu (error)\n",
+                   stats.too_short_blobs);
+        if (stats.too_large_blobs)
+          fprintf (outfp, "      too large blobs: %8lu (error)\n",
+                   stats.too_large_blobs);
+    }
+
+  return rc;
+}
+
+
+
+struct dupitem_s
+{
+  unsigned long recno;
+  unsigned char digest[20];
+};
+
+
+static int
+cmp_dupitems (const void *arg_a, const void *arg_b)
+{
+  struct dupitem_s *a = (struct dupitem_s *)arg_a;
+  struct dupitem_s *b = (struct dupitem_s *)arg_b;
+
+  return memcmp (a->digest, b->digest, 20);
+}
+
+
+int
+_keybox_dump_find_dups (const char *filename, int print_them, FILE *outfp)
+{
+  estream_t fp;
+  KEYBOXBLOB blob;
+  int rc;
+  unsigned long recno = 0;
+  unsigned char zerodigest[20];
+  struct dupitem_s *dupitems;
+  size_t dupitems_size, dupitems_count, lastn, n;
+  char fprbuf[3*20+1];
+
+  (void)print_them;
+
+  memset (zerodigest, 0, sizeof zerodigest);
+
+  if (!(fp = open_file (&filename, outfp)))
+    return gpg_error_from_syserror ();
+
+  dupitems_size = 1000;
+  dupitems = malloc (dupitems_size * sizeof *dupitems);
+  if (!dupitems)
+    {
+      gpg_error_t tmperr = gpg_error_from_syserror ();
+      fprintf (outfp, "error allocating array for '%s': %s\n",
+               filename, strerror(errno));
+      return tmperr;
+    }
+  dupitems_count = 0;
+
+  while ( !(rc = _keybox_read_blob (&blob, fp, NULL)) )
+    {
+      unsigned char digest[20];
+
+      if (hash_blob_rawdata (blob, digest))
+        fprintf (outfp, "error in blob %ld of '%s'\n", recno, filename);
+      else if (memcmp (digest, zerodigest, 20))
+        {
+          if (dupitems_count >= dupitems_size)
+            {
+              struct dupitem_s *tmp;
+
+              dupitems_size += 1000;
+              tmp = realloc (dupitems, dupitems_size * sizeof *dupitems);
+              if (!tmp)
+                {
+                  gpg_error_t tmperr = gpg_error_from_syserror ();
+                  fprintf (outfp, "error reallocating array for '%s': %s\n",
+                           filename, strerror(errno));
+                  free (dupitems);
+                  return tmperr;
+                }
+              dupitems = tmp;
+            }
+          dupitems[dupitems_count].recno = recno;
+          memcpy (dupitems[dupitems_count].digest, digest, 20);
+          dupitems_count++;
+        }
+      _keybox_release_blob (blob);
+      recno++;
+    }
+  if (rc == -1)
+    rc = 0;
+  if (rc)
+    fprintf (outfp, "error reading '%s': %s\n", filename, gpg_strerror (rc));
+  if (fp != es_stdin)
+    es_fclose (fp);
+
+  qsort (dupitems, dupitems_count, sizeof *dupitems, cmp_dupitems);
+
+  for (lastn=0, n=1; n < dupitems_count; lastn=n, n++)
+    {
+      if (!memcmp (dupitems[lastn].digest, dupitems[n].digest, 20))
+        {
+          bin2hexcolon (dupitems[lastn].digest, 20, fprbuf);
+          fprintf (outfp, "fpr=%s recno=%lu", fprbuf, dupitems[lastn].recno);
+          do
+            fprintf (outfp, " %lu", dupitems[n].recno);
+          while (++n < dupitems_count
+                 && !memcmp (dupitems[lastn].digest, dupitems[n].digest, 20));
+          putc ('\n', outfp);
+          n--;
+        }
+    }
+
+  free (dupitems);
+
+  return rc;
+}
+
+
+/* Print records with record numbers FROM to TO to OUTFP.  */
+int
+_keybox_dump_cut_records (const char *filename, unsigned long from,
+                          unsigned long to, FILE *outfp)
+{
+  estream_t fp;
+  KEYBOXBLOB blob;
+  int rc;
+  unsigned long recno = 0;
+
+  if (!(fp = open_file (&filename, stderr)))
+    return gpg_error_from_syserror ();
+
+  while ( !(rc = _keybox_read_blob (&blob, fp, NULL)) )
+    {
+      if (recno > to)
+        break; /* Ready.  */
+      if (recno >= from)
+        {
+          if ((rc = _keybox_write_blob (blob, NULL, outfp)))
+            {
+              fprintf (stderr, "error writing output: %s\n",
+                       gpg_strerror (rc));
+              goto leave;
+            }
+        }
+      _keybox_release_blob (blob);
+      recno++;
+    }
+  if (rc == -1)
+    rc = 0;
+  if (rc)
+    fprintf (stderr, "error reading '%s': %s\n", filename, gpg_strerror (rc));
+ leave:
+  if (fp != es_stdin)
+    es_fclose (fp);
+  return rc;
+}