Adding upstream version 2.2.40.upstream/2.2.40

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

1 files changed, 941 insertions, 0 deletions

diff --git a/sm/import.c b/sm/import.c
new file mode 100644
index 0000000..8a75a2b
--- /dev/null
+++ b/sm/import.c
@@ -0,0 +1,941 @@
+/* import.c - Import certificates
+ * Copyright (C) 2001, 2003, 2004, 2009, 2010 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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <time.h>
+#include <assert.h>
+#include <unistd.h>
+
+#include "gpgsm.h"
+#include <gcrypt.h>
+#include <ksba.h>
+
+#include "keydb.h"
+#include "../common/exechelp.h"
+#include "../common/i18n.h"
+#include "../common/sysutils.h"
+#include "../kbx/keybox.h" /* for KEYBOX_FLAG_* */
+#include "../common/membuf.h"
+#include "minip12.h"
+
+/* The arbitrary limit of one PKCS#12 object.  */
+#define MAX_P12OBJ_SIZE 128 /*kb*/
+
+
+struct stats_s {
+  unsigned long count;
+  unsigned long imported;
+  unsigned long unchanged;
+  unsigned long not_imported;
+  unsigned long secret_read;
+  unsigned long secret_imported;
+  unsigned long secret_dups;
+ };
+
+
+struct rsa_secret_key_s
+{
+  gcry_mpi_t n;	    /* public modulus */
+  gcry_mpi_t e;	    /* public exponent */
+  gcry_mpi_t d;	    /* exponent */
+  gcry_mpi_t p;	    /* prime  p. */
+  gcry_mpi_t q;	    /* prime  q. */
+  gcry_mpi_t u;	    /* inverse of p mod q. */
+};
+
+
+static gpg_error_t parse_p12 (ctrl_t ctrl, ksba_reader_t reader,
+                              struct stats_s *stats);
+
+
+
+static void
+print_imported_status (ctrl_t ctrl, ksba_cert_t cert, int new_cert)
+{
+  char *fpr;
+
+  fpr = gpgsm_get_fingerprint_hexstring (cert, GCRY_MD_SHA1);
+  if (new_cert)
+    gpgsm_status2 (ctrl, STATUS_IMPORTED, fpr, "[X.509]", NULL);
+
+  gpgsm_status2 (ctrl, STATUS_IMPORT_OK,
+                 new_cert? "1":"0",  fpr, NULL);
+
+  xfree (fpr);
+}
+
+
+/* Print an IMPORT_PROBLEM status.  REASON is one of:
+   0 := "No specific reason given".
+   1 := "Invalid Certificate".
+   2 := "Issuer Certificate missing".
+   3 := "Certificate Chain too long".
+   4 := "Error storing certificate".
+*/
+static void
+print_import_problem (ctrl_t ctrl, ksba_cert_t cert, int reason)
+{
+  char *fpr = NULL;
+  char buf[25];
+  int i;
+
+  sprintf (buf, "%d", reason);
+  if (cert)
+    {
+      fpr = gpgsm_get_fingerprint_hexstring (cert, GCRY_MD_SHA1);
+      /* detetect an error (all high) value */
+      for (i=0; fpr[i] == 'F'; i++)
+        ;
+      if (!fpr[i])
+        {
+          xfree (fpr);
+          fpr = NULL;
+        }
+    }
+  gpgsm_status2 (ctrl, STATUS_IMPORT_PROBLEM, buf, fpr, NULL);
+  xfree (fpr);
+}
+
+
+void
+print_imported_summary (ctrl_t ctrl, struct stats_s *stats)
+{
+  char buf[14*25];
+
+  if (!opt.quiet)
+    {
+      log_info (_("total number processed: %lu\n"), stats->count);
+      if (stats->imported)
+        {
+          log_info (_("              imported: %lu"), stats->imported );
+          log_printf ("\n");
+	}
+      if (stats->unchanged)
+        log_info (_("             unchanged: %lu\n"), stats->unchanged);
+      if (stats->secret_read)
+        log_info (_("      secret keys read: %lu\n"), stats->secret_read );
+      if (stats->secret_imported)
+        log_info (_("  secret keys imported: %lu\n"), stats->secret_imported );
+      if (stats->secret_dups)
+        log_info (_(" secret keys unchanged: %lu\n"), stats->secret_dups );
+      if (stats->not_imported)
+        log_info (_("          not imported: %lu\n"), stats->not_imported);
+    }
+
+  sprintf(buf, "%lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu",
+          stats->count,
+          0l /*stats->no_user_id*/,
+          stats->imported,
+          0l /*stats->imported_rsa*/,
+          stats->unchanged,
+          0l /*stats->n_uids*/,
+          0l /*stats->n_subk*/,
+          0l /*stats->n_sigs*/,
+          0l /*stats->n_revoc*/,
+          stats->secret_read,
+          stats->secret_imported,
+          stats->secret_dups,
+          0l /*stats->skipped_new_keys*/,
+          stats->not_imported
+          );
+  gpgsm_status (ctrl, STATUS_IMPORT_RES, buf);
+}
+
+
+
+static void
+check_and_store (ctrl_t ctrl, struct stats_s *stats,
+                 ksba_cert_t cert, int depth)
+{
+  int rc;
+
+  if (stats)
+    stats->count++;
+  if ( depth >= 50 )
+    {
+      log_error (_("certificate chain too long\n"));
+      if (stats)
+        stats->not_imported++;
+      print_import_problem (ctrl, cert, 3);
+      return;
+    }
+
+  /* Some basic checks, but don't care about missing certificates;
+     this is so that we are able to import entire certificate chains
+     w/o requiring a special order (i.e. root-CA first).  This used
+     to be different but because gpgsm_verify even imports
+     certificates without any checks, it doesn't matter much and the
+     code gets much cleaner.  A housekeeping function to remove
+     certificates w/o an anchor would be nice, though.
+
+     Optionally we do a full validation in addition to the basic test.
+  */
+  rc = gpgsm_basic_cert_check (ctrl, cert);
+  if (!rc && ctrl->with_validation)
+    rc = gpgsm_validate_chain (ctrl, cert, "", NULL, 0, NULL, 0, NULL);
+  if (!rc || (!ctrl->with_validation
+              && (gpg_err_code (rc) == GPG_ERR_MISSING_CERT
+                  || gpg_err_code (rc) == GPG_ERR_MISSING_ISSUER_CERT)))
+    {
+      int existed;
+
+      if (!keydb_store_cert (ctrl, cert, 0, &existed))
+        {
+          ksba_cert_t next = NULL;
+
+          if (!existed)
+            {
+              print_imported_status (ctrl, cert, 1);
+              if (stats)
+                stats->imported++;
+            }
+          else
+            {
+              print_imported_status (ctrl, cert, 0);
+              if (stats)
+                stats->unchanged++;
+            }
+
+          if (opt.verbose > 1 && existed)
+            {
+              if (depth)
+                log_info ("issuer certificate already in DB\n");
+              else
+                log_info ("certificate already in DB\n");
+            }
+          else if (opt.verbose && !existed)
+            {
+              if (depth)
+                log_info ("issuer certificate imported\n");
+              else
+                log_info ("certificate imported\n");
+            }
+
+          /* Now lets walk up the chain and import all certificates up
+             the chain.  This is required in case we already stored
+             parent certificates in the ephemeral keybox.  Do not
+             update the statistics, though. */
+          if (!gpgsm_walk_cert_chain (ctrl, cert, &next))
+            {
+              check_and_store (ctrl, NULL, next, depth+1);
+              ksba_cert_release (next);
+            }
+        }
+      else
+        {
+          log_error (_("error storing certificate\n"));
+          if (stats)
+            stats->not_imported++;
+          print_import_problem (ctrl, cert, 4);
+        }
+    }
+  else
+    {
+      log_error (_("basic certificate checks failed - not imported\n"));
+      if (stats)
+        stats->not_imported++;
+      /* We keep the test for GPG_ERR_MISSING_CERT only in case
+         GPG_ERR_MISSING_CERT has been used instead of the newer
+         GPG_ERR_MISSING_ISSUER_CERT.  */
+      print_import_problem
+        (ctrl, cert,
+         gpg_err_code (rc) == GPG_ERR_MISSING_ISSUER_CERT? 2 :
+         gpg_err_code (rc) == GPG_ERR_MISSING_CERT? 2 :
+         gpg_err_code (rc) == GPG_ERR_BAD_CERT?     1 : 0);
+    }
+}
+
+
+
+
+static int
+import_one (ctrl_t ctrl, struct stats_s *stats, int in_fd)
+{
+  int rc;
+  gnupg_ksba_io_t b64reader = NULL;
+  ksba_reader_t reader;
+  ksba_cert_t cert = NULL;
+  ksba_cms_t cms = NULL;
+  estream_t fp = NULL;
+  ksba_content_type_t ct;
+  int any = 0;
+
+  fp = es_fdopen_nc (in_fd, "rb");
+  if (!fp)
+    {
+      rc = gpg_error_from_syserror ();
+      log_error ("fdopen() failed: %s\n", strerror (errno));
+      goto leave;
+    }
+
+  rc = gnupg_ksba_create_reader
+    (&b64reader, ((ctrl->is_pem? GNUPG_KSBA_IO_PEM : 0)
+                  | (ctrl->is_base64? GNUPG_KSBA_IO_BASE64 : 0)
+                  | (ctrl->autodetect_encoding? GNUPG_KSBA_IO_AUTODETECT : 0)
+                  | GNUPG_KSBA_IO_MULTIPEM),
+     fp, &reader);
+  if (rc)
+    {
+      log_error ("can't create reader: %s\n", gpg_strerror (rc));
+      goto leave;
+    }
+
+
+  /* We need to loop here to handle multiple PEM objects in one
+     file. */
+  do
+    {
+      ksba_cms_release (cms); cms = NULL;
+      ksba_cert_release (cert); cert = NULL;
+
+      ct = ksba_cms_identify (reader);
+      if (ct == KSBA_CT_SIGNED_DATA)
+        { /* This is probably a signed-only message - import the certs */
+          ksba_stop_reason_t stopreason;
+          int i;
+
+          rc = ksba_cms_new (&cms);
+          if (rc)
+            goto leave;
+
+          rc = ksba_cms_set_reader_writer (cms, reader, NULL);
+          if (rc)
+            {
+              log_error ("ksba_cms_set_reader_writer failed: %s\n",
+                         gpg_strerror (rc));
+              goto leave;
+            }
+
+          do
+            {
+              rc = ksba_cms_parse (cms, &stopreason);
+              if (rc)
+                {
+                  log_error ("ksba_cms_parse failed: %s\n", gpg_strerror (rc));
+                  goto leave;
+                }
+
+              if (stopreason == KSBA_SR_BEGIN_DATA)
+                log_info ("not a certs-only message\n");
+            }
+          while (stopreason != KSBA_SR_READY);
+
+          for (i=0; (cert=ksba_cms_get_cert (cms, i)); i++)
+            {
+              check_and_store (ctrl, stats, cert, 0);
+              ksba_cert_release (cert);
+              cert = NULL;
+            }
+          if (!i)
+            log_error ("no certificate found\n");
+          else
+            any = 1;
+        }
+      else if (ct == KSBA_CT_PKCS12)
+        {
+          /* This seems to be a pkcs12 message. */
+          rc = parse_p12 (ctrl, reader, stats);
+          if (!rc)
+            any = 1;
+        }
+      else if (ct == KSBA_CT_NONE)
+        { /* Failed to identify this message - assume a certificate */
+
+          rc = ksba_cert_new (&cert);
+          if (rc)
+            goto leave;
+
+          rc = ksba_cert_read_der (cert, reader);
+          if (rc)
+            goto leave;
+
+          check_and_store (ctrl, stats, cert, 0);
+          any = 1;
+        }
+      else
+        {
+          log_error ("can't extract certificates from input\n");
+          rc = gpg_error (GPG_ERR_NO_DATA);
+        }
+
+      ksba_reader_clear (reader, NULL, NULL);
+    }
+  while (!gnupg_ksba_reader_eof_seen (b64reader));
+
+ leave:
+  if (any && gpg_err_code (rc) == GPG_ERR_EOF)
+    rc = 0;
+  ksba_cms_release (cms);
+  ksba_cert_release (cert);
+  gnupg_ksba_destroy_reader (b64reader);
+  es_fclose (fp);
+  return rc;
+}
+
+
+
+/* Re-import certifciates.  IN_FD is a list of linefeed delimited
+   fingerprints t re-import.  The actual re-import is done by clearing
+   the ephemeral flag.  */
+static int
+reimport_one (ctrl_t ctrl, struct stats_s *stats, int in_fd)
+{
+  gpg_error_t err = 0;
+  estream_t fp = NULL;
+  char line[100];  /* Sufficient for a fingerprint.  */
+  KEYDB_HANDLE kh;
+  KEYDB_SEARCH_DESC desc;
+  ksba_cert_t cert = NULL;
+  unsigned int flags;
+
+  kh = keydb_new ();
+  if (!kh)
+    {
+      err = gpg_error (GPG_ERR_ENOMEM);;
+      log_error (_("failed to allocate keyDB handle\n"));
+      goto leave;
+    }
+  keydb_set_ephemeral (kh, 1);
+
+  fp = es_fdopen_nc (in_fd, "r");
+  if (!fp)
+    {
+      err = gpg_error_from_syserror ();
+      log_error ("es_fdopen(%d) failed: %s\n", in_fd, gpg_strerror (err));
+      goto leave;
+    }
+
+  while (es_fgets (line, DIM(line)-1, fp) )
+    {
+      if (*line && line[strlen(line)-1] != '\n')
+        {
+          err = gpg_error (GPG_ERR_LINE_TOO_LONG);
+          goto leave;
+	}
+      trim_spaces (line);
+      if (!*line)
+        continue;
+
+      stats->count++;
+
+      err = classify_user_id (line, &desc, 0);
+      if (err)
+        {
+          print_import_problem (ctrl, NULL, 0);
+          stats->not_imported++;
+          continue;
+        }
+
+      keydb_search_reset (kh);
+      err = keydb_search (ctrl, kh, &desc, 1);
+      if (err)
+        {
+          print_import_problem (ctrl, NULL, 0);
+          stats->not_imported++;
+          continue;
+        }
+
+      ksba_cert_release (cert);
+      cert = NULL;
+      err = keydb_get_cert (kh, &cert);
+      if (err)
+        {
+          log_error ("keydb_get_cert() failed: %s\n", gpg_strerror (err));
+          print_import_problem (ctrl, NULL, 1);
+          stats->not_imported++;
+          continue;
+        }
+
+      err = keydb_get_flags (kh, KEYBOX_FLAG_BLOB, 0, &flags);
+      if (err)
+        {
+          log_error (_("error getting stored flags: %s\n"), gpg_strerror (err));
+          print_imported_status (ctrl, cert, 0);
+          stats->not_imported++;
+          continue;
+        }
+      if ( !(flags & KEYBOX_FLAG_BLOB_EPHEMERAL) )
+        {
+          print_imported_status (ctrl, cert, 0);
+          stats->unchanged++;
+          continue;
+        }
+
+      err = keydb_set_cert_flags (ctrl, cert, 1, KEYBOX_FLAG_BLOB, 0,
+                                  KEYBOX_FLAG_BLOB_EPHEMERAL, 0);
+      if (err)
+        {
+          log_error ("clearing ephemeral flag failed: %s\n",
+                     gpg_strerror (err));
+          print_import_problem (ctrl, cert, 0);
+          stats->not_imported++;
+          continue;
+        }
+
+      print_imported_status (ctrl, cert, 1);
+      stats->imported++;
+    }
+  err = 0;
+  if (es_ferror (fp))
+    {
+      err = gpg_error_from_syserror ();
+      log_error ("error reading fd %d: %s\n", in_fd, gpg_strerror (err));
+      goto leave;
+    }
+
+ leave:
+  ksba_cert_release (cert);
+  keydb_release (kh);
+  es_fclose (fp);
+  return err;
+}
+
+
+
+int
+gpgsm_import (ctrl_t ctrl, int in_fd, int reimport_mode)
+{
+  int rc;
+  struct stats_s stats;
+
+  memset (&stats, 0, sizeof stats);
+  if (reimport_mode)
+    rc = reimport_one (ctrl, &stats, in_fd);
+  else
+    rc = import_one (ctrl, &stats, in_fd);
+  print_imported_summary (ctrl, &stats);
+  /* If we never printed an error message do it now so that a command
+     line invocation will return with an error (log_error keeps a
+     global errorcount) */
+  if (rc && !log_get_errorcount (0))
+    log_error (_("error importing certificate: %s\n"), gpg_strerror (rc));
+  return rc;
+}
+
+
+int
+gpgsm_import_files (ctrl_t ctrl, int nfiles, char **files,
+                    int (*of)(const char *fname))
+{
+  int rc = 0;
+  struct stats_s stats;
+
+  memset (&stats, 0, sizeof stats);
+
+  if (!nfiles)
+    rc = import_one (ctrl, &stats, 0);
+  else
+    {
+      for (; nfiles && !rc ; nfiles--, files++)
+        {
+          int fd = of (*files);
+          rc = import_one (ctrl, &stats, fd);
+          close (fd);
+          if (rc == -1)
+            rc = 0;
+        }
+    }
+  print_imported_summary (ctrl, &stats);
+  /* If we never printed an error message do it now so that a command
+     line invocation will return with an error (log_error keeps a
+     global errorcount) */
+  if (rc && !log_get_errorcount (0))
+    log_error (_("error importing certificate: %s\n"), gpg_strerror (rc));
+  return rc;
+}
+
+
+/* Check that the RSA secret key SKEY is valid.  Swap parameters to
+   the libgcrypt standard.  */
+static gpg_error_t
+rsa_key_check (struct rsa_secret_key_s *skey)
+{
+  int err = 0;
+  gcry_mpi_t t = gcry_mpi_snew (0);
+  gcry_mpi_t t1 = gcry_mpi_snew (0);
+  gcry_mpi_t t2 = gcry_mpi_snew (0);
+  gcry_mpi_t phi = gcry_mpi_snew (0);
+
+  /* Check that n == p * q.  */
+  gcry_mpi_mul (t, skey->p, skey->q);
+  if (gcry_mpi_cmp( t, skey->n) )
+    {
+      log_error ("RSA oops: n != p * q\n");
+      err++;
+    }
+
+  /* Check that p is less than q.  */
+  if (gcry_mpi_cmp (skey->p, skey->q) > 0)
+    {
+      gcry_mpi_t tmp;
+
+      log_info ("swapping secret primes\n");
+      tmp = gcry_mpi_copy (skey->p);
+      gcry_mpi_set (skey->p, skey->q);
+      gcry_mpi_set (skey->q, tmp);
+      gcry_mpi_release (tmp);
+      /* Recompute u.  */
+      gcry_mpi_invm (skey->u, skey->p, skey->q);
+    }
+
+  /* Check that e divides neither p-1 nor q-1.  */
+  gcry_mpi_sub_ui (t, skey->p, 1 );
+  gcry_mpi_div (NULL, t, t, skey->e, 0);
+  if (!gcry_mpi_cmp_ui( t, 0) )
+    {
+      log_error ("RSA oops: e divides p-1\n");
+      err++;
+    }
+  gcry_mpi_sub_ui (t, skey->q, 1);
+  gcry_mpi_div (NULL, t, t, skey->e, 0);
+  if (!gcry_mpi_cmp_ui( t, 0))
+    {
+      log_info ("RSA oops: e divides q-1\n" );
+      err++;
+    }
+
+  /* Check that d is correct.  */
+  gcry_mpi_sub_ui (t1, skey->p, 1);
+  gcry_mpi_sub_ui (t2, skey->q, 1);
+  gcry_mpi_mul (phi, t1, t2);
+  gcry_mpi_invm (t, skey->e, phi);
+  if (gcry_mpi_cmp (t, skey->d))
+    {
+      /* No: try universal exponent. */
+      gcry_mpi_gcd (t, t1, t2);
+      gcry_mpi_div (t, NULL, phi, t, 0);
+      gcry_mpi_invm (t, skey->e, t);
+      if (gcry_mpi_cmp (t, skey->d))
+        {
+          log_error ("RSA oops: bad secret exponent\n");
+          err++;
+        }
+    }
+
+  /* Check for correctness of u.  */
+  gcry_mpi_invm (t, skey->p, skey->q);
+  if (gcry_mpi_cmp (t, skey->u))
+    {
+      log_info ("RSA oops: bad u parameter\n");
+      err++;
+    }
+
+  if (err)
+    log_info ("RSA secret key check failed\n");
+
+  gcry_mpi_release (t);
+  gcry_mpi_release (t1);
+  gcry_mpi_release (t2);
+  gcry_mpi_release (phi);
+
+  return err? gpg_error (GPG_ERR_BAD_SECKEY):0;
+}
+
+
+/* Object passed to store_cert_cb.  */
+struct store_cert_parm_s
+{
+  gpg_error_t err;        /* First error seen.  */
+  struct stats_s *stats;  /* The stats object.  */
+  ctrl_t ctrl;            /* The control object.  */
+};
+
+/* Helper to store the DER encoded certificate CERTDATA of length
+   CERTDATALEN.  */
+static void
+store_cert_cb (void *opaque,
+               const unsigned char *certdata, size_t certdatalen)
+{
+  struct store_cert_parm_s *parm = opaque;
+  gpg_error_t err;
+  ksba_cert_t cert;
+
+  err = ksba_cert_new (&cert);
+  if (err)
+    {
+      if (!parm->err)
+        parm->err = err;
+      return;
+    }
+
+  err = ksba_cert_init_from_mem (cert, certdata, certdatalen);
+  if (err)
+    {
+      log_error ("failed to parse a certificate: %s\n", gpg_strerror (err));
+      if (!parm->err)
+        parm->err = err;
+    }
+  else
+    check_and_store (parm->ctrl, parm->stats, cert, 0);
+  ksba_cert_release (cert);
+}
+
+
+/* Assume that the reader is at a pkcs#12 message and try to import
+   certificates from that stupid format.  We will transfer secret
+   keys to the agent.  */
+static gpg_error_t
+parse_p12 (ctrl_t ctrl, ksba_reader_t reader, struct stats_s *stats)
+{
+  gpg_error_t err = 0;
+  char buffer[1024];
+  size_t ntotal, nread;
+  membuf_t p12mbuf;
+  char *p12buffer = NULL;
+  size_t p12buflen;
+  size_t p12bufoff;
+  gcry_mpi_t *kparms = NULL;
+  struct rsa_secret_key_s sk;
+  char *passphrase = NULL;
+  unsigned char *key = NULL;
+  size_t keylen;
+  void *kek = NULL;
+  size_t keklen;
+  unsigned char *wrappedkey = NULL;
+  size_t wrappedkeylen;
+  gcry_cipher_hd_t cipherhd = NULL;
+  gcry_sexp_t s_key = NULL;
+  unsigned char grip[20];
+  int bad_pass = 0;
+  int i;
+  struct store_cert_parm_s store_cert_parm;
+
+  memset (&store_cert_parm, 0, sizeof store_cert_parm);
+  store_cert_parm.ctrl = ctrl;
+  store_cert_parm.stats = stats;
+
+  init_membuf (&p12mbuf, 4096);
+  ntotal = 0;
+  while (!(err = ksba_reader_read (reader, buffer, sizeof buffer, &nread)))
+    {
+      if (ntotal >= MAX_P12OBJ_SIZE*1024)
+        {
+          /* Arbitrary limit to avoid DoS attacks. */
+          err = gpg_error (GPG_ERR_TOO_LARGE);
+          log_error ("pkcs#12 object is larger than %dk\n", MAX_P12OBJ_SIZE);
+          break;
+        }
+      put_membuf (&p12mbuf, buffer, nread);
+      ntotal += nread;
+    }
+  if (gpg_err_code (err) == GPG_ERR_EOF)
+    err = 0;
+  if (!err)
+    {
+      p12buffer = get_membuf (&p12mbuf, &p12buflen);
+      if (!p12buffer)
+        err = gpg_error_from_syserror ();
+    }
+  if (err)
+    {
+      log_error (_("error reading input: %s\n"), gpg_strerror (err));
+      goto leave;
+    }
+
+  /* GnuPG 2.0.4 accidentally created binary P12 files with the string
+     "The passphrase is %s encoded.\n\n" prepended to the ASN.1 data.
+     We fix that here.  */
+  if (p12buflen > 29 && !memcmp (p12buffer, "The passphrase is ", 18))
+    {
+      for (p12bufoff=18;
+           p12bufoff < p12buflen && p12buffer[p12bufoff] != '\n';
+           p12bufoff++)
+        ;
+      p12bufoff++;
+      if (p12bufoff < p12buflen && p12buffer[p12bufoff] == '\n')
+        p12bufoff++;
+    }
+  else
+    p12bufoff = 0;
+
+
+  err = gpgsm_agent_ask_passphrase
+    (ctrl,
+     i18n_utf8 (N_("Please enter the passphrase to unprotect the PKCS#12 object.")),
+     0, &passphrase);
+  if (err)
+    goto leave;
+
+  kparms = p12_parse (p12buffer + p12bufoff, p12buflen - p12bufoff,
+                      passphrase, store_cert_cb, &store_cert_parm,
+                      &bad_pass, NULL);
+
+  xfree (passphrase);
+  passphrase = NULL;
+
+  if (!kparms)
+    {
+      log_error ("error parsing or decrypting the PKCS#12 file\n");
+      err = gpg_error (GPG_ERR_INV_OBJ);
+      goto leave;
+    }
+
+/*    print_mpi ("   n", kparms[0]); */
+/*    print_mpi ("   e", kparms[1]); */
+/*    print_mpi ("   d", kparms[2]); */
+/*    print_mpi ("   p", kparms[3]); */
+/*    print_mpi ("   q", kparms[4]); */
+/*    print_mpi ("dmp1", kparms[5]); */
+/*    print_mpi ("dmq1", kparms[6]); */
+/*    print_mpi ("   u", kparms[7]); */
+
+  sk.n = kparms[0];
+  sk.e = kparms[1];
+  sk.d = kparms[2];
+  sk.q = kparms[3];
+  sk.p = kparms[4];
+  sk.u = kparms[7];
+  err = rsa_key_check (&sk);
+  if (err)
+    goto leave;
+/*    print_mpi ("   n", sk.n); */
+/*    print_mpi ("   e", sk.e); */
+/*    print_mpi ("   d", sk.d); */
+/*    print_mpi ("   p", sk.p); */
+/*    print_mpi ("   q", sk.q); */
+/*    print_mpi ("   u", sk.u); */
+
+  /* Create an S-expression from the parameters. */
+  err = gcry_sexp_build (&s_key, NULL,
+                         "(private-key(rsa(n%m)(e%m)(d%m)(p%m)(q%m)(u%m)))",
+                         sk.n, sk.e, sk.d, sk.p, sk.q, sk.u, NULL);
+  for (i=0; i < 8; i++)
+    gcry_mpi_release (kparms[i]);
+  gcry_free (kparms);
+  kparms = NULL;
+  if (err)
+    {
+      log_error ("failed to create S-expression from key: %s\n",
+                 gpg_strerror (err));
+      goto leave;
+    }
+
+  /* Compute the keygrip. */
+  if (!gcry_pk_get_keygrip (s_key, grip))
+    {
+      err = gpg_error (GPG_ERR_GENERAL);
+      log_error ("can't calculate keygrip\n");
+      goto leave;
+    }
+  if (DBG_X509)
+    log_printhex (grip, 20, "keygrip=");
+
+  /* Convert to canonical encoding using a function which pads it to a
+     multiple of 64 bits.  We need this padding for AESWRAP.  */
+  err = make_canon_sexp_pad (s_key, 1, &key, &keylen);
+  if (err)
+    {
+      log_error ("error creating canonical S-expression\n");
+      goto leave;
+    }
+  gcry_sexp_release (s_key);
+  s_key = NULL;
+
+  /* Get the current KEK.  */
+  err = gpgsm_agent_keywrap_key (ctrl, 0, &kek, &keklen);
+  if (err)
+    {
+      log_error ("error getting the KEK: %s\n", gpg_strerror (err));
+      goto leave;
+    }
+
+  /* Wrap the key.  */
+  err = gcry_cipher_open (&cipherhd, GCRY_CIPHER_AES128,
+                          GCRY_CIPHER_MODE_AESWRAP, 0);
+  if (err)
+    goto leave;
+  err = gcry_cipher_setkey (cipherhd, kek, keklen);
+  if (err)
+    goto leave;
+  xfree (kek);
+  kek = NULL;
+
+  wrappedkeylen = keylen + 8;
+  wrappedkey = xtrymalloc (wrappedkeylen);
+  if (!wrappedkey)
+    {
+      err = gpg_error_from_syserror ();
+      goto leave;
+    }
+
+  err = gcry_cipher_encrypt (cipherhd, wrappedkey, wrappedkeylen, key, keylen);
+  if (err)
+    goto leave;
+  xfree (key);
+  key = NULL;
+  gcry_cipher_close (cipherhd);
+  cipherhd = NULL;
+
+  /* Send the wrapped key to the agent.  */
+  err = gpgsm_agent_import_key (ctrl, wrappedkey, wrappedkeylen);
+  if (!err)
+    {
+      stats->count++;
+      stats->secret_read++;
+      stats->secret_imported++;
+    }
+  else if ( gpg_err_code (err) == GPG_ERR_EEXIST )
+    {
+      err = 0;
+      stats->count++;
+      stats->secret_read++;
+      stats->secret_dups++;
+    }
+
+  /* If we did not get an error from storing the secret key we return
+     a possible error from parsing the certificates.  We do this after
+     storing the secret keys so that a bad certificate does not
+     inhibit our chance to store the secret key.  */
+  if (!err && store_cert_parm.err)
+    err = store_cert_parm.err;
+
+ leave:
+  if (kparms)
+    {
+      for (i=0; i < 8; i++)
+        gcry_mpi_release (kparms[i]);
+      gcry_free (kparms);
+      kparms = NULL;
+    }
+  xfree (key);
+  gcry_sexp_release (s_key);
+  xfree (passphrase);
+  gcry_cipher_close (cipherhd);
+  xfree (wrappedkey);
+  xfree (kek);
+  xfree (get_membuf (&p12mbuf, NULL));
+  xfree (p12buffer);
+
+  if (bad_pass)
+    {
+      /* We only write a plain error code and not direct
+         BAD_PASSPHRASE because the pkcs12 parser might issue this
+         message multiple times, BAD_PASSPHRASE in general requires a
+         keyID and parts of the import might actually succeed so that
+         IMPORT_PROBLEM is also not appropriate. */
+      gpgsm_status_with_err_code (ctrl, STATUS_ERROR,
+                                  "import.parsep12", GPG_ERR_BAD_PASSPHRASE);
+    }
+
+  return err;
+}