-/* skclist.c
- * Copyright (C) 1998 Free Software Foundation, Inc.
+/* skclist.c - Build a list of secret keys
+ * Copyright (C) 1998, 1999, 2000, 2001, 2006,
+ * 2010 Free Software Foundation, Inc.
*
- * This file is part of GNUPG.
+ * This file is part of GnuPG.
*
- * GNUPG is free software; you can redistribute it and/or modify
+ * 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 2 of the License, or
+ * 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,
+ * 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, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <errno.h>
#include <assert.h>
+#include "gpg.h"
#include "options.h"
#include "packet.h"
-#include "errors.h"
+#include "status.h"
#include "keydb.h"
-#include "memory.h"
#include "util.h"
+#include "i18n.h"
+
+
+/* Return true if Libgcrypt's RNG is in faked mode. */
+int
+random_is_faked (void)
+{
+ return !!gcry_control (GCRYCTL_FAKED_RANDOM_P, 0);
+}
void
-release_skc_list( SKC_LIST skc_list )
+release_sk_list (SK_LIST sk_list)
{
- SKC_LIST skc_rover;
+ SK_LIST sk_rover;
- for( ; skc_list; skc_list = skc_rover ) {
- skc_rover = skc_list->next;
- free_secret_cert( skc_list->skc );
- m_free( skc_list );
+ for (; sk_list; sk_list = sk_rover)
+ {
+ sk_rover = sk_list->next;
+ free_public_key (sk_list->pk);
+ xfree (sk_list);
}
}
-int
-build_skc_list( STRLIST locusr, SKC_LIST *ret_skc_list, int unlock )
+
+/* Check that we are only using keys which don't have
+ * the string "(insecure!)" or "not secure" or "do not use"
+ * in one of the user ids. */
+static int
+is_insecure (PKT_public_key *pk)
+{
+ u32 keyid[2];
+ KBNODE node = NULL, u;
+ int insecure = 0;
+
+ keyid_from_pk (pk, keyid);
+ node = get_pubkeyblock (keyid);
+ for (u = node; u; u = u->next)
+ {
+ if (u->pkt->pkttype == PKT_USER_ID)
+ {
+ PKT_user_id *id = u->pkt->pkt.user_id;
+ if (id->attrib_data)
+ continue; /* skip attribute packets */
+ if (strstr (id->name, "(insecure!)")
+ || strstr (id->name, "not secure")
+ || strstr (id->name, "do not use")
+ || strstr (id->name, "(INSECURE!)"))
+ {
+ insecure = 1;
+ break;
+ }
+ }
+ }
+ release_kbnode (node);
+
+ return insecure;
+}
+
+static int
+key_present_in_sk_list (SK_LIST sk_list, PKT_public_key *pk)
+{
+ for (; sk_list; sk_list = sk_list->next)
+ {
+ if (!cmp_public_keys (sk_list->pk, pk))
+ return 0;
+ }
+ return -1;
+}
+
+static int
+is_duplicated_entry (strlist_t list, strlist_t item)
{
- SKC_LIST skc_list = NULL;
- int rc;
+ for (; list && list != item; list = list->next)
+ {
+ if (!strcmp (list->d, item->d))
+ return 1;
+ }
+ return 0;
+}
- if( !locusr ) { /* use the default one */
- PKT_secret_cert *skc;
- skc = m_alloc_clear( sizeof *skc );
- if( (rc = get_seckey_byname( skc, NULL, unlock )) ) {
- free_secret_cert( skc ); skc = NULL;
- log_error("no default secret key: %s\n", g10_errstr(rc) );
+gpg_error_t
+build_sk_list (strlist_t locusr, SK_LIST *ret_sk_list, unsigned int use)
+{
+ gpg_error_t err;
+ SK_LIST sk_list = NULL;
+
+ if (!locusr) /* No user ids given - use the default key. */
+ {
+ PKT_public_key *pk;
+
+ pk = xmalloc_clear (sizeof *pk);
+ pk->req_usage = use;
+ if ((err = getkey_byname (NULL, pk, NULL, 1, NULL)))
+ {
+ free_public_key (pk);
+ pk = NULL;
+ log_error ("no default secret key: %s\n", gpg_strerror (err));
+ write_status_text (STATUS_INV_SGNR, get_inv_recpsgnr_code (err));
}
- else if( !(rc=check_pubkey_algo(skc->pubkey_algo)) ) {
- SKC_LIST r;
- r = m_alloc( sizeof *r );
- r->skc = skc; skc = NULL;
- r->next = skc_list;
- r->mark = 0;
- skc_list = r;
+ else if ((err = openpgp_pk_test_algo2 (pk->pubkey_algo, use)))
+ {
+ free_public_key (pk);
+ pk = NULL;
+ log_error ("invalid default secret key: %s\n", gpg_strerror (err));
+ write_status_text (STATUS_INV_SGNR, get_inv_recpsgnr_code (err));
}
- else {
- free_secret_cert( skc ); skc = NULL;
- log_error("invalid default secret key: %s\n", g10_errstr(rc) );
+ else
+ {
+ SK_LIST r;
+
+ if (random_is_faked () && !is_insecure (pk))
+ {
+ log_info (_("key is not flagged as insecure - "
+ "can't use it with the faked RNG!\n"));
+ free_public_key (pk);
+ pk = NULL;
+ write_status_text (STATUS_INV_SGNR,
+ get_inv_recpsgnr_code (GPG_ERR_NOT_TRUSTED));
+ }
+ else
+ {
+ r = xmalloc (sizeof *r);
+ r->pk = pk;
+ pk = NULL;
+ r->next = sk_list;
+ r->mark = 0;
+ sk_list = r;
+ }
}
}
- else {
- for(; locusr; locusr = locusr->next ) {
- PKT_secret_cert *skc;
-
- skc = m_alloc_clear( sizeof *skc );
- if( (rc = get_seckey_byname( skc, locusr->d, unlock )) ) {
- free_secret_cert( skc ); skc = NULL;
- log_error("skipped '%s': %s\n", locusr->d, g10_errstr(rc) );
+ else /* Check the given user ids. */
+ {
+ strlist_t locusr_orig = locusr;
+
+ for (; locusr; locusr = locusr->next)
+ {
+ PKT_public_key *pk;
+
+ err = 0;
+ /* Do an early check against duplicated entries. However
+ * this won't catch all duplicates because the user IDs may
+ * be specified in different ways. */
+ if (is_duplicated_entry (locusr_orig, locusr))
+ {
+ log_info (_("skipped \"%s\": duplicated\n"), locusr->d);
+ continue;
+ }
+ pk = xmalloc_clear (sizeof *pk);
+ pk->req_usage = use;
+ if ((err = getkey_byname (NULL, pk, locusr->d, 1, NULL)))
+ {
+ free_public_key (pk);
+ pk = NULL;
+ log_error (_("skipped \"%s\": %s\n"),
+ locusr->d, gpg_strerror (err));
+ write_status_text_and_buffer
+ (STATUS_INV_SGNR, get_inv_recpsgnr_code (err),
+ locusr->d, strlen (locusr->d), -1);
}
- else if( !(rc=check_pubkey_algo(skc->pubkey_algo)) ) {
- SKC_LIST r;
- r = m_alloc( sizeof *r );
- r->skc = skc; skc = NULL;
- r->next = skc_list;
- r->mark = 0;
- skc_list = r;
+ else if (!key_present_in_sk_list (sk_list, pk))
+ {
+ free_public_key (pk);
+ pk = NULL;
+ log_info (_("skipped: secret key already present\n"));
}
- else {
- free_secret_cert( skc ); skc = NULL;
- log_error("skipped '%s': %s\n", locusr->d, g10_errstr(rc) );
+ else if ((err = openpgp_pk_test_algo2 (pk->pubkey_algo, use)))
+ {
+ free_public_key (pk);
+ pk = NULL;
+ log_error ("skipped \"%s\": %s\n", locusr->d, gpg_strerror (err));
+ write_status_text_and_buffer
+ (STATUS_INV_SGNR, get_inv_recpsgnr_code (err),
+ locusr->d, strlen (locusr->d), -1);
+ }
+ else
+ {
+ SK_LIST r;
+
+ if (pk->version == 4 && (use & PUBKEY_USAGE_SIG)
+ && pk->pubkey_algo == PUBKEY_ALGO_ELGAMAL_E)
+ {
+ log_info (_("skipped \"%s\": %s\n"), locusr->d,
+ _("this is a PGP generated Elgamal key which"
+ " is not secure for signatures!"));
+ free_public_key (pk);
+ pk = NULL;
+ write_status_text_and_buffer
+ (STATUS_INV_SGNR,
+ get_inv_recpsgnr_code (GPG_ERR_WRONG_KEY_USAGE),
+ locusr->d, strlen (locusr->d), -1);
+ }
+ else if (random_is_faked () && !is_insecure (pk))
+ {
+ log_info (_("key is not flagged as insecure - "
+ "can't use it with the faked RNG!\n"));
+ free_public_key (pk);
+ pk = NULL;
+ write_status_text_and_buffer
+ (STATUS_INV_SGNR,
+ get_inv_recpsgnr_code (GPG_ERR_NOT_TRUSTED),
+ locusr->d, strlen (locusr->d), -1);
+ }
+ else
+ {
+ r = xmalloc (sizeof *r);
+ r->pk = pk;
+ pk = NULL;
+ r->next = sk_list;
+ r->mark = 0;
+ sk_list = r;
+ }
}
}
}
-
- if( !rc && !skc_list ) {
- log_error("no valid signators\n");
- rc = G10ERR_NO_USER_ID;
+ if (!err && !sk_list)
+ {
+ log_error ("no valid signators\n");
+ write_status_text (STATUS_NO_SGNR, "0");
+ err = gpg_error (GPG_ERR_NO_USER_ID);
}
- if( rc )
- release_skc_list( skc_list );
- else
- *ret_skc_list = skc_list;
- return rc;
+ if (err)
+ release_sk_list (sk_list);
+ else
+ *ret_sk_list = sk_list;
+ return err;
}
-
projects / gnupg.git / blobdiff