core: Add new context flag "no-symkey-cache".

* src/gpgme.c (gpgme_set_ctx_flag): Set flag.
(gpgme_get_ctx_flag): Get flag.
* src/context.h (struct gpgme_context): Add field no_symkey_cache.
* src/engine-gpg.c (struct engine_gpg): Ditto.
(gpg_set_engine_flags): Set flag.
(build_argv): Pass option --no-symkey-cache to gpg.

* tests/run-decrypt.c (print_result): Fix segv for symmetric messages.
(main): New option --no-symkey-cache.
* tests/run-encrypt.c (main): New option --no-symkey-cache.

Signed-off-by: Werner Koch <[email protected]>

1 files changed, 19 insertions, 1 deletions

diff --git a/tests/run-decrypt.c b/tests/run-decrypt.c
index f4c47544..a2e82a0e 100644
--- a/tests/run-decrypt.c
+++ b/tests/run-decrypt.c
@@ -60,7 +60,7 @@ print_result (gpgme_decrypt_result_t result)
   if (result->session_key)
     printf ("Session key: %s\n", result->session_key);
 
-  for (recp = result->recipients; recp->next; recp = recp->next)
+  for (recp = result->recipients; recp && recp->next; recp = recp->next)
     {
       printf ("recipient %d\n", count++);
       printf ("  status ....: %s\n", gpgme_strerror (recp->status));
@@ -82,6 +82,7 @@ show_usage (int ex)
          "  --export-session-key            show the session key\n"
          "  --override-session-key STRING   use STRING as session key\n"
          "  --request-origin STRING         use STRING as request origin\n"
+         "  --no-symkey-cache               disable the use of that cache\n"
          "  --unwrap         remove only the encryption layer\n"
          , stderr);
   exit (ex);
@@ -104,6 +105,7 @@ main (int argc, char **argv)
   int export_session_key = 0;
   const char *override_session_key = NULL;
   const char *request_origin = NULL;
+  int no_symkey_cache = 0;
   int raw_output = 0;
 
   if (argc)
@@ -160,6 +162,11 @@ main (int argc, char **argv)
           request_origin = *argv;
           argc--; argv++;
         }
+      else if (!strcmp (*argv, "--no-symkey-cache"))
+        {
+          no_symkey_cache = 1;
+          argc--; argv++;
+        }
       else if (!strcmp (*argv, "--unwrap"))
         {
           flags |= GPGME_DECRYPT_UNWRAP;
@@ -226,6 +233,17 @@ main (int argc, char **argv)
         }
     }
 
+  if (no_symkey_cache)
+    {
+      err = gpgme_set_ctx_flag (ctx, "no-symkey-cache", "1");
+      if (err)
+        {
+          fprintf (stderr, PGM ": error setting no-symkey-cache:  %s\n",
+                   gpgme_strerror (err));
+          exit (1);
+        }
+    }
+
   err = gpgme_data_new_from_stream (&in, fp_in);
   if (err)
     {