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-rw-r--r--sm/sign.c828
1 files changed, 828 insertions, 0 deletions
diff --git a/sm/sign.c b/sm/sign.c
new file mode 100644
index 0000000..dd7612f
--- /dev/null
+++ b/sm/sign.c
@@ -0,0 +1,828 @@
+/* sign.c - Sign a message
+ * Copyright (C) 2001, 2002, 2003, 2008,
+ * 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 <unistd.h>
+#include <time.h>
+#include <assert.h>
+
+#include "gpgsm.h"
+#include <gcrypt.h>
+#include <ksba.h>
+
+#include "keydb.h"
+#include "../common/i18n.h"
+
+
+/* Hash the data and return if something was hashed. Return -1 on error. */
+static int
+hash_data (int fd, gcry_md_hd_t md)
+{
+ estream_t fp;
+ char buffer[4096];
+ int nread;
+ int rc = 0;
+
+ fp = es_fdopen_nc (fd, "rb");
+ if (!fp)
+ {
+ log_error ("fdopen(%d) failed: %s\n", fd, strerror (errno));
+ return -1;
+ }
+
+ do
+ {
+ nread = es_fread (buffer, 1, DIM(buffer), fp);
+ gcry_md_write (md, buffer, nread);
+ }
+ while (nread);
+ if (es_ferror (fp))
+ {
+ log_error ("read error on fd %d: %s\n", fd, strerror (errno));
+ rc = -1;
+ }
+ es_fclose (fp);
+ return rc;
+}
+
+
+static int
+hash_and_copy_data (int fd, gcry_md_hd_t md, ksba_writer_t writer)
+{
+ gpg_error_t err;
+ estream_t fp;
+ char buffer[4096];
+ int nread;
+ int rc = 0;
+ int any = 0;
+
+ fp = es_fdopen_nc (fd, "rb");
+ if (!fp)
+ {
+ gpg_error_t tmperr = gpg_error_from_syserror ();
+ log_error ("fdopen(%d) failed: %s\n", fd, strerror (errno));
+ return tmperr;
+ }
+
+ do
+ {
+ nread = es_fread (buffer, 1, DIM(buffer), fp);
+ if (nread)
+ {
+ any = 1;
+ gcry_md_write (md, buffer, nread);
+ err = ksba_writer_write_octet_string (writer, buffer, nread, 0);
+ if (err)
+ {
+ log_error ("write failed: %s\n", gpg_strerror (err));
+ rc = err;
+ }
+ }
+ }
+ while (nread && !rc);
+ if (es_ferror (fp))
+ {
+ rc = gpg_error_from_syserror ();
+ log_error ("read error on fd %d: %s\n", fd, strerror (errno));
+ }
+ es_fclose (fp);
+ if (!any)
+ {
+ /* We can't allow signing an empty message because it does not
+ make much sense and more seriously, ksba_cms_build has
+ already written the tag for data and now expects an octet
+ string and an octet string of size 0 is illegal. */
+ log_error ("cannot sign an empty message\n");
+ rc = gpg_error (GPG_ERR_NO_DATA);
+ }
+ if (!rc)
+ {
+ err = ksba_writer_write_octet_string (writer, NULL, 0, 1);
+ if (err)
+ {
+ log_error ("write failed: %s\n", gpg_strerror (err));
+ rc = err;
+ }
+ }
+
+ return rc;
+}
+
+
+/* Get the default certificate which is defined as the first
+ certificate capable of signing returned by the keyDB and has a
+ secret key available. */
+int
+gpgsm_get_default_cert (ctrl_t ctrl, ksba_cert_t *r_cert)
+{
+ KEYDB_HANDLE hd;
+ ksba_cert_t cert = NULL;
+ int rc;
+ char *p;
+
+ hd = keydb_new ();
+ if (!hd)
+ return gpg_error (GPG_ERR_GENERAL);
+ rc = keydb_search_first (ctrl, hd);
+ if (rc)
+ {
+ keydb_release (hd);
+ return rc;
+ }
+
+ do
+ {
+ rc = keydb_get_cert (hd, &cert);
+ if (rc)
+ {
+ log_error ("keydb_get_cert failed: %s\n", gpg_strerror (rc));
+ keydb_release (hd);
+ return rc;
+ }
+
+ if (!gpgsm_cert_use_sign_p (cert, 1))
+ {
+ p = gpgsm_get_keygrip_hexstring (cert);
+ if (p)
+ {
+ if (!gpgsm_agent_havekey (ctrl, p))
+ {
+ xfree (p);
+ keydb_release (hd);
+ *r_cert = cert;
+ return 0; /* got it */
+ }
+ xfree (p);
+ }
+ }
+
+ ksba_cert_release (cert);
+ cert = NULL;
+ }
+ while (!(rc = keydb_search_next (ctrl, hd)));
+ if (rc && rc != -1)
+ log_error ("keydb_search_next failed: %s\n", gpg_strerror (rc));
+
+ ksba_cert_release (cert);
+ keydb_release (hd);
+ return rc;
+}
+
+
+static ksba_cert_t
+get_default_signer (ctrl_t ctrl)
+{
+ KEYDB_SEARCH_DESC desc;
+ ksba_cert_t cert = NULL;
+ KEYDB_HANDLE kh = NULL;
+ int rc;
+
+ if (!opt.local_user)
+ {
+ rc = gpgsm_get_default_cert (ctrl, &cert);
+ if (rc)
+ {
+ if (rc != -1)
+ log_debug ("failed to find default certificate: %s\n",
+ gpg_strerror (rc));
+ return NULL;
+ }
+ return cert;
+ }
+
+ rc = classify_user_id (opt.local_user, &desc, 0);
+ if (rc)
+ {
+ log_error ("failed to find default signer: %s\n", gpg_strerror (rc));
+ return NULL;
+ }
+
+ kh = keydb_new ();
+ if (!kh)
+ return NULL;
+
+ rc = keydb_search (ctrl, kh, &desc, 1);
+ if (rc)
+ {
+ log_debug ("failed to find default certificate: rc=%d\n", rc);
+ }
+ else
+ {
+ rc = keydb_get_cert (kh, &cert);
+ if (rc)
+ {
+ log_debug ("failed to get cert: rc=%d\n", rc);
+ }
+ }
+
+ keydb_release (kh);
+ return cert;
+}
+
+/* Depending on the options in CTRL add the certificate CERT as well as
+ other certificate up in the chain to the Root-CA to the CMS
+ object. */
+static int
+add_certificate_list (ctrl_t ctrl, ksba_cms_t cms, ksba_cert_t cert)
+{
+ gpg_error_t err;
+ int rc = 0;
+ ksba_cert_t next = NULL;
+ int n;
+ int not_root = 0;
+
+ ksba_cert_ref (cert);
+
+ n = ctrl->include_certs;
+ log_debug ("adding certificates at level %d\n", n);
+ if (n == -2)
+ {
+ not_root = 1;
+ n = -1;
+ }
+ if (n < 0 || n > 50)
+ n = 50; /* We better apply an upper bound */
+
+ /* First add my own certificate unless we don't want any certificate
+ included at all. */
+ if (n)
+ {
+ if (not_root && gpgsm_is_root_cert (cert))
+ err = 0;
+ else
+ err = ksba_cms_add_cert (cms, cert);
+ if (err)
+ goto ksba_failure;
+ if (n>0)
+ n--;
+ }
+ /* Walk the chain to include all other certificates. Note that a -1
+ used for N makes sure that there is no limit and all certs get
+ included. */
+ while ( n-- && !(rc = gpgsm_walk_cert_chain (ctrl, cert, &next)) )
+ {
+ if (not_root && gpgsm_is_root_cert (next))
+ err = 0;
+ else
+ err = ksba_cms_add_cert (cms, next);
+ ksba_cert_release (cert);
+ cert = next; next = NULL;
+ if (err)
+ goto ksba_failure;
+ }
+ ksba_cert_release (cert);
+
+ return rc == -1? 0: rc;
+
+ ksba_failure:
+ ksba_cert_release (cert);
+ log_error ("ksba_cms_add_cert failed: %s\n", gpg_strerror (err));
+ return err;
+}
+
+
+
+
+/* Perform a sign operation.
+
+ Sign the data received on DATA-FD in embedded mode or in detached
+ mode when DETACHED is true. Write the signature to OUT_FP. The
+ keys used to sign are taken from SIGNERLIST or the default one will
+ be used if the value of this argument is NULL. */
+int
+gpgsm_sign (ctrl_t ctrl, certlist_t signerlist,
+ int data_fd, int detached, estream_t out_fp)
+{
+ int i, rc;
+ gpg_error_t err;
+ gnupg_ksba_io_t b64writer = NULL;
+ ksba_writer_t writer;
+ ksba_cms_t cms = NULL;
+ ksba_stop_reason_t stopreason;
+ KEYDB_HANDLE kh = NULL;
+ gcry_md_hd_t data_md = NULL;
+ int signer;
+ const char *algoid;
+ int algo;
+ ksba_isotime_t signed_at;
+ certlist_t cl;
+ int release_signerlist = 0;
+
+ audit_set_type (ctrl->audit, AUDIT_TYPE_SIGN);
+
+ kh = keydb_new ();
+ if (!kh)
+ {
+ log_error (_("failed to allocate keyDB handle\n"));
+ rc = gpg_error (GPG_ERR_GENERAL);
+ goto leave;
+ }
+
+ if (!gnupg_rng_is_compliant (opt.compliance))
+ {
+ rc = gpg_error (GPG_ERR_FORBIDDEN);
+ log_error (_("%s is not compliant with %s mode\n"),
+ "RNG",
+ gnupg_compliance_option_string (opt.compliance));
+ gpgsm_status_with_error (ctrl, STATUS_ERROR,
+ "random-compliance", rc);
+ goto leave;
+ }
+
+ ctrl->pem_name = "SIGNED MESSAGE";
+ rc = gnupg_ksba_create_writer
+ (&b64writer, ((ctrl->create_pem? GNUPG_KSBA_IO_PEM : 0)
+ | (ctrl->create_base64? GNUPG_KSBA_IO_BASE64 : 0)),
+ ctrl->pem_name, out_fp, &writer);
+ if (rc)
+ {
+ log_error ("can't create writer: %s\n", gpg_strerror (rc));
+ goto leave;
+ }
+
+ err = ksba_cms_new (&cms);
+ if (err)
+ {
+ rc = err;
+ goto leave;
+ }
+
+ err = ksba_cms_set_reader_writer (cms, NULL, writer);
+ if (err)
+ {
+ log_debug ("ksba_cms_set_reader_writer failed: %s\n",
+ gpg_strerror (err));
+ rc = err;
+ goto leave;
+ }
+
+ /* We are going to create signed data with data as encap. content */
+ err = ksba_cms_set_content_type (cms, 0, KSBA_CT_SIGNED_DATA);
+ if (!err)
+ err = ksba_cms_set_content_type (cms, 1, KSBA_CT_DATA);
+ if (err)
+ {
+ log_debug ("ksba_cms_set_content_type failed: %s\n",
+ gpg_strerror (err));
+ rc = err;
+ goto leave;
+ }
+
+ /* If no list of signers is given, use the default certificate. */
+ if (!signerlist)
+ {
+ ksba_cert_t cert = get_default_signer (ctrl);
+ if (!cert)
+ {
+ log_error ("no default signer found\n");
+ gpgsm_status2 (ctrl, STATUS_INV_SGNR,
+ get_inv_recpsgnr_code (GPG_ERR_NO_SECKEY), NULL);
+ rc = gpg_error (GPG_ERR_GENERAL);
+ goto leave;
+ }
+
+ /* Although we don't check for ambiguous specification we will
+ check that the signer's certificate is usable and valid. */
+ rc = gpgsm_cert_use_sign_p (cert, 0);
+ if (!rc)
+ rc = gpgsm_validate_chain (ctrl, cert, "", NULL, 0, NULL, 0, NULL);
+ if (rc)
+ {
+ char *tmpfpr;
+
+ tmpfpr = gpgsm_get_fingerprint_hexstring (cert, 0);
+ gpgsm_status2 (ctrl, STATUS_INV_SGNR,
+ get_inv_recpsgnr_code (rc), tmpfpr, NULL);
+ xfree (tmpfpr);
+ goto leave;
+ }
+
+ /* That one is fine - create signerlist. */
+ signerlist = xtrycalloc (1, sizeof *signerlist);
+ if (!signerlist)
+ {
+ rc = out_of_core ();
+ ksba_cert_release (cert);
+ goto leave;
+ }
+ signerlist->cert = cert;
+ release_signerlist = 1;
+ }
+
+ /* Figure out the hash algorithm to use. We do not want to use the
+ one for the certificate but if possible an OID for the plain
+ algorithm. */
+ if (opt.forced_digest_algo && opt.verbose)
+ log_info ("user requested hash algorithm %d\n", opt.forced_digest_algo);
+ for (i=0, cl=signerlist; cl; cl = cl->next, i++)
+ {
+ const char *oid;
+
+ if (opt.forced_digest_algo)
+ {
+ oid = NULL;
+ cl->hash_algo = opt.forced_digest_algo;
+ }
+ else
+ {
+ oid = ksba_cert_get_digest_algo (cl->cert);
+ cl->hash_algo = oid ? gcry_md_map_name (oid) : 0;
+ }
+ switch (cl->hash_algo)
+ {
+ case GCRY_MD_SHA1: oid = "1.3.14.3.2.26"; break;
+ case GCRY_MD_RMD160: oid = "1.3.36.3.2.1"; break;
+ case GCRY_MD_SHA224: oid = "2.16.840.1.101.3.4.2.4"; break;
+ case GCRY_MD_SHA256: oid = "2.16.840.1.101.3.4.2.1"; break;
+ case GCRY_MD_SHA384: oid = "2.16.840.1.101.3.4.2.2"; break;
+ case GCRY_MD_SHA512: oid = "2.16.840.1.101.3.4.2.3"; break;
+/* case GCRY_MD_WHIRLPOOL: oid = "No OID yet"; break; */
+
+ case GCRY_MD_MD5: /* We don't want to use MD5. */
+ case 0: /* No algorithm found in cert. */
+ default: /* Other algorithms. */
+ log_info (_("hash algorithm %d (%s) for signer %d not supported;"
+ " using %s\n"),
+ cl->hash_algo, oid? oid: "?", i,
+ gcry_md_algo_name (GCRY_MD_SHA1));
+ cl->hash_algo = GCRY_MD_SHA1;
+ oid = "1.3.14.3.2.26";
+ break;
+ }
+ cl->hash_algo_oid = oid;
+
+ /* Check compliance. */
+ if (! gnupg_digest_is_allowed (opt.compliance, 1, cl->hash_algo))
+ {
+ log_error (_("digest algorithm '%s' may not be used in %s mode\n"),
+ gcry_md_algo_name (cl->hash_algo),
+ gnupg_compliance_option_string (opt.compliance));
+ err = gpg_error (GPG_ERR_DIGEST_ALGO);
+ goto leave;
+ }
+
+ {
+ unsigned int nbits;
+ int pk_algo = gpgsm_get_key_algo_info (cl->cert, &nbits);
+
+ if (! gnupg_pk_is_allowed (opt.compliance, PK_USE_SIGNING, pk_algo, 0,
+ NULL, nbits, NULL))
+ {
+ char kidstr[10+1];
+
+ snprintf (kidstr, sizeof kidstr, "0x%08lX",
+ gpgsm_get_short_fingerprint (cl->cert, NULL));
+ log_error (_("key %s may not be used for signing in %s mode\n"),
+ kidstr,
+ gnupg_compliance_option_string (opt.compliance));
+ err = gpg_error (GPG_ERR_PUBKEY_ALGO);
+ goto leave;
+ }
+ }
+ }
+
+ if (opt.verbose)
+ {
+ for (i=0, cl=signerlist; cl; cl = cl->next, i++)
+ log_info (_("hash algorithm used for signer %d: %s (%s)\n"),
+ i, gcry_md_algo_name (cl->hash_algo), cl->hash_algo_oid);
+ }
+
+
+ /* Gather certificates of signers and store them in the CMS object. */
+ for (cl=signerlist; cl; cl = cl->next)
+ {
+ rc = gpgsm_cert_use_sign_p (cl->cert, 0);
+ if (rc)
+ goto leave;
+
+ err = ksba_cms_add_signer (cms, cl->cert);
+ if (err)
+ {
+ log_error ("ksba_cms_add_signer failed: %s\n", gpg_strerror (err));
+ rc = err;
+ goto leave;
+ }
+ rc = add_certificate_list (ctrl, cms, cl->cert);
+ if (rc)
+ {
+ log_error ("failed to store list of certificates: %s\n",
+ gpg_strerror(rc));
+ goto leave;
+ }
+ /* Set the hash algorithm we are going to use */
+ err = ksba_cms_add_digest_algo (cms, cl->hash_algo_oid);
+ if (err)
+ {
+ log_debug ("ksba_cms_add_digest_algo failed: %s\n",
+ gpg_strerror (err));
+ rc = err;
+ goto leave;
+ }
+ }
+
+
+ /* Check whether one of the certificates is qualified. Note that we
+ already validated the certificate and thus the user data stored
+ flag must be available. */
+ if (!opt.no_chain_validation)
+ {
+ for (cl=signerlist; cl; cl = cl->next)
+ {
+ size_t buflen;
+ char buffer[1];
+
+ err = ksba_cert_get_user_data (cl->cert, "is_qualified",
+ &buffer, sizeof (buffer), &buflen);
+ if (err || !buflen)
+ {
+ log_error (_("checking for qualified certificate failed: %s\n"),
+ gpg_strerror (err));
+ rc = err;
+ goto leave;
+ }
+ if (*buffer)
+ err = gpgsm_qualified_consent (ctrl, cl->cert);
+ else
+ err = gpgsm_not_qualified_warning (ctrl, cl->cert);
+ if (err)
+ {
+ rc = err;
+ goto leave;
+ }
+ }
+ }
+
+ /* Prepare hashing (actually we are figuring out what we have set
+ above). */
+ rc = gcry_md_open (&data_md, 0, 0);
+ if (rc)
+ {
+ log_error ("md_open failed: %s\n", gpg_strerror (rc));
+ goto leave;
+ }
+ if (DBG_HASHING)
+ gcry_md_debug (data_md, "sign.data");
+
+ for (i=0; (algoid=ksba_cms_get_digest_algo_list (cms, i)); i++)
+ {
+ algo = gcry_md_map_name (algoid);
+ if (!algo)
+ {
+ log_error ("unknown hash algorithm '%s'\n", algoid? algoid:"?");
+ rc = gpg_error (GPG_ERR_BUG);
+ goto leave;
+ }
+ gcry_md_enable (data_md, algo);
+ audit_log_i (ctrl->audit, AUDIT_DATA_HASH_ALGO, algo);
+ }
+
+ audit_log (ctrl->audit, AUDIT_SETUP_READY);
+
+ if (detached)
+ { /* We hash the data right now so that we can store the message
+ digest. ksba_cms_build() takes this as an flag that detached
+ data is expected. */
+ unsigned char *digest;
+ size_t digest_len;
+
+ if (!hash_data (data_fd, data_md))
+ audit_log (ctrl->audit, AUDIT_GOT_DATA);
+ for (cl=signerlist,signer=0; cl; cl = cl->next, signer++)
+ {
+ digest = gcry_md_read (data_md, cl->hash_algo);
+ digest_len = gcry_md_get_algo_dlen (cl->hash_algo);
+ if ( !digest || !digest_len )
+ {
+ log_error ("problem getting the hash of the data\n");
+ rc = gpg_error (GPG_ERR_BUG);
+ goto leave;
+ }
+ err = ksba_cms_set_message_digest (cms, signer, digest, digest_len);
+ if (err)
+ {
+ log_error ("ksba_cms_set_message_digest failed: %s\n",
+ gpg_strerror (err));
+ rc = err;
+ goto leave;
+ }
+ }
+ }
+
+ gnupg_get_isotime (signed_at);
+ for (cl=signerlist,signer=0; cl; cl = cl->next, signer++)
+ {
+ err = ksba_cms_set_signing_time (cms, signer, signed_at);
+ if (err)
+ {
+ log_error ("ksba_cms_set_signing_time failed: %s\n",
+ gpg_strerror (err));
+ rc = err;
+ goto leave;
+ }
+ }
+
+ /* We need to write at least a minimal list of our capabilities to
+ try to convince some MUAs to use 3DES and not the crippled
+ RC2. Our list is:
+
+ aes128-CBC
+ des-EDE3-CBC
+ */
+ err = ksba_cms_add_smime_capability (cms, "2.16.840.1.101.3.4.1.2", NULL, 0);
+ if (!err)
+ err = ksba_cms_add_smime_capability (cms, "1.2.840.113549.3.7", NULL, 0);
+ if (err)
+ {
+ log_error ("ksba_cms_add_smime_capability failed: %s\n",
+ gpg_strerror (err));
+ goto leave;
+ }
+
+
+ /* Main building loop. */
+ do
+ {
+ err = ksba_cms_build (cms, &stopreason);
+ if (err)
+ {
+ log_debug ("ksba_cms_build failed: %s\n", gpg_strerror (err));
+ rc = err;
+ goto leave;
+ }
+
+ if (stopreason == KSBA_SR_BEGIN_DATA)
+ {
+ /* Hash the data and store the message digest. */
+ unsigned char *digest;
+ size_t digest_len;
+
+ assert (!detached);
+
+ rc = hash_and_copy_data (data_fd, data_md, writer);
+ if (rc)
+ goto leave;
+ audit_log (ctrl->audit, AUDIT_GOT_DATA);
+ for (cl=signerlist,signer=0; cl; cl = cl->next, signer++)
+ {
+ digest = gcry_md_read (data_md, cl->hash_algo);
+ digest_len = gcry_md_get_algo_dlen (cl->hash_algo);
+ if ( !digest || !digest_len )
+ {
+ log_error ("problem getting the hash of the data\n");
+ rc = gpg_error (GPG_ERR_BUG);
+ goto leave;
+ }
+ err = ksba_cms_set_message_digest (cms, signer,
+ digest, digest_len);
+ if (err)
+ {
+ log_error ("ksba_cms_set_message_digest failed: %s\n",
+ gpg_strerror (err));
+ rc = err;
+ goto leave;
+ }
+ }
+ }
+ else if (stopreason == KSBA_SR_NEED_SIG)
+ {
+ /* Compute the signature for all signers. */
+ gcry_md_hd_t md;
+
+ rc = gcry_md_open (&md, 0, 0);
+ if (rc)
+ {
+ log_error ("md_open failed: %s\n", gpg_strerror (rc));
+ goto leave;
+ }
+ if (DBG_HASHING)
+ gcry_md_debug (md, "sign.attr");
+ ksba_cms_set_hash_function (cms, HASH_FNC, md);
+ for (cl=signerlist,signer=0; cl; cl = cl->next, signer++)
+ {
+ unsigned char *sigval = NULL;
+ char *buf, *fpr;
+
+ audit_log_i (ctrl->audit, AUDIT_NEW_SIG, signer);
+ if (signer)
+ gcry_md_reset (md);
+ {
+ certlist_t cl_tmp;
+
+ for (cl_tmp=signerlist; cl_tmp; cl_tmp = cl_tmp->next)
+ {
+ gcry_md_enable (md, cl_tmp->hash_algo);
+ audit_log_i (ctrl->audit, AUDIT_ATTR_HASH_ALGO,
+ cl_tmp->hash_algo);
+ }
+ }
+
+ rc = ksba_cms_hash_signed_attrs (cms, signer);
+ if (rc)
+ {
+ log_debug ("hashing signed attrs failed: %s\n",
+ gpg_strerror (rc));
+ gcry_md_close (md);
+ goto leave;
+ }
+
+ rc = gpgsm_create_cms_signature (ctrl, cl->cert,
+ md, cl->hash_algo, &sigval);
+ if (rc)
+ {
+ audit_log_cert (ctrl->audit, AUDIT_SIGNED_BY, cl->cert, rc);
+ gcry_md_close (md);
+ goto leave;
+ }
+
+ err = ksba_cms_set_sig_val (cms, signer, sigval);
+ xfree (sigval);
+ if (err)
+ {
+ audit_log_cert (ctrl->audit, AUDIT_SIGNED_BY, cl->cert, err);
+ log_error ("failed to store the signature: %s\n",
+ gpg_strerror (err));
+ rc = err;
+ gcry_md_close (md);
+ goto leave;
+ }
+
+ /* write a status message */
+ fpr = gpgsm_get_fingerprint_hexstring (cl->cert, GCRY_MD_SHA1);
+ if (!fpr)
+ {
+ rc = gpg_error (GPG_ERR_ENOMEM);
+ gcry_md_close (md);
+ goto leave;
+ }
+ rc = 0;
+ {
+ int pkalgo = gpgsm_get_key_algo_info (cl->cert, NULL);
+ buf = xtryasprintf ("%c %d %d 00 %s %s",
+ detached? 'D':'S',
+ pkalgo,
+ cl->hash_algo,
+ signed_at,
+ fpr);
+ if (!buf)
+ rc = gpg_error_from_syserror ();
+ }
+ xfree (fpr);
+ if (rc)
+ {
+ gcry_md_close (md);
+ goto leave;
+ }
+ gpgsm_status (ctrl, STATUS_SIG_CREATED, buf);
+ xfree (buf);
+ audit_log_cert (ctrl->audit, AUDIT_SIGNED_BY, cl->cert, 0);
+ }
+ gcry_md_close (md);
+ }
+ }
+ while (stopreason != KSBA_SR_READY);
+
+ rc = gnupg_ksba_finish_writer (b64writer);
+ if (rc)
+ {
+ log_error ("write failed: %s\n", gpg_strerror (rc));
+ goto leave;
+ }
+
+ audit_log (ctrl->audit, AUDIT_SIGNING_DONE);
+ log_info ("signature created\n");
+
+
+ leave:
+ if (rc)
+ log_error ("error creating signature: %s <%s>\n",
+ gpg_strerror (rc), gpg_strsource (rc) );
+ if (release_signerlist)
+ gpgsm_release_certlist (signerlist);
+ ksba_cms_release (cms);
+ gnupg_ksba_destroy_writer (b64writer);
+ keydb_release (kh);
+ gcry_md_close (data_md);
+ return rc;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-15 13:29:47 +0000