gpg: Do not require a trustdb for decryption.

* g10/trustdb.c (init_trustdb): Add and implement arg NO_CREATE.
Change to return an error code.  Change all callers to to pass False
for NO_CREATE.
(tdb_get_ownertrust): New arg NO_CREATE.  Call init_trustdb to test
for a non-existing trustdb.  Change all callers to to pass False for
NO_CREATE.
(tdb_get_min_ownertrust): Ditto.
* g10/trust.c (get_ownertrust_with_min): Add arg NO_CREATE.  Call
init_trustdb for a quick check.
(get_ownertrust_info): Add arg NO_CREATE.
(get_ownertrust_string): Ditto.
* g10/gpgv.c (get_ownertrust_info): Adjust stub.
* g10/test-stubs.c (get_ownertrust_info): Ditto.
* g10/mainproc.c (list_node): Call get_ownertrust_info with NO_CREATE
set.
* g10/pubkey-enc.c (get_it): Ditto.
--

Fixes-commit: effa80e0b5fd8cf9e31a984afe391c2406edee8b

For details see mails on Feb 27 and 28 by dkg, gniibe, and Justus to
gnupg-devel 'test failure on git master with
decrypt-session-key.scm (and: continuous integration?)'

Signed-off-by: Werner Koch <wk@gnupg.org>

1 files changed, 5 insertions, 5 deletions

diff --git a/g10/trustdb.h b/g10/trustdb.h
index 6081d1088..3088063aa 100644
--- a/g10/trustdb.h
+++ b/g10/trustdb.h
@@ -127,7 +127,7 @@ void update_trustdb (ctrl_t ctrl);
 int setup_trustdb( int level, const char *dbname );
 void how_to_fix_the_trustdb (void);
 const char *trust_model_string (int model);
-void init_trustdb( void );
+gpg_error_t init_trustdb (int no_create);
 void tdb_check_trustdb_stale (ctrl_t ctrl);
 void sync_trustdb( void );
 
@@ -152,10 +152,10 @@ void read_trust_options(byte *trust_model,ulong *created,ulong *nextcheck,
 			byte *marginals,byte *completes,byte *cert_depth,
 			byte *min_cert_level);
 
-unsigned int tdb_get_ownertrust (PKT_public_key *pk);
-unsigned int tdb_get_min_ownertrust (PKT_public_key *pk);
-int get_ownertrust_info (PKT_public_key *pk);
-const char *get_ownertrust_string (PKT_public_key *pk);
+unsigned int tdb_get_ownertrust (PKT_public_key *pk, int no_create);
+unsigned int tdb_get_min_ownertrust (PKT_public_key *pk, int no_create);
+int get_ownertrust_info (PKT_public_key *pk, int no_create);
+const char *get_ownertrust_string (PKT_public_key *pk, int no_create);
 
 void tdb_update_ownertrust (PKT_public_key *pk, unsigned int new_trust);
 int tdb_clear_ownertrusts (PKT_public_key *pk);