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-rw-r--r--sm/import.c939
1 files changed, 939 insertions, 0 deletions
diff --git a/sm/import.c b/sm/import.c
new file mode 100644
index 0000000..ca69382
--- /dev/null
+++ b/sm/import.c
@@ -0,0 +1,939 @@
+/* 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 ("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);
+
+ 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;
+ }
+ 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;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-16 22:35:36 +0000