core: New context flag "ignore-mdc-error".

* src/context.h (gpgme_context): Add field ignore_mdc_error.
* src/gpgme.c (gpgme_set_ctx_flag, gpgme_get_ctx_flag): Set/get it.
* src/engine-gpg.c (engine_gpg): Add flags.ignore_mdc_error.
(gpg_set_engine_flags): Set it.
(build_argv): Pass option to gpg.
* src/decrypt.c (_gpgme_decrypt_status_handler): Take care of flag.
(gpgme_op_decrypt_result): Clear flag.
(gpgme_op_decrypt): Clear flag.
* src/decrypt-verify.c (gpgme_op_decrypt_verify): Clear flag
(gpgme_op_decrypt_ext): Clear flag.

* tests/run-decrypt.c (show_usage): Add option --ignore-mdc-error.

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

1 files changed, 16 insertions, 1 deletions

diff --git a/src/engine-gpg.c b/src/engine-gpg.c
index 43d49fe6..802af08d 100644
--- a/src/engine-gpg.c
+++ b/src/engine-gpg.c
@@ -144,6 +144,7 @@ struct engine_gpg
   struct {
     unsigned int no_symkey_cache : 1;
     unsigned int offline : 1;
+    unsigned int ignore_mdc_error : 1;
   } flags;
 
   /* NULL or the data object fed to --override_session_key-fd.  */
@@ -646,9 +647,10 @@ gpg_set_engine_flags (void *engine, const gpgme_ctx_t ctx)
 
   gpg->flags.no_symkey_cache = (ctx->no_symkey_cache
                                 && have_gpg_version (gpg, "2.2.7"));
-
   gpg->flags.offline = (ctx->offline && have_gpg_version (gpg, "2.1.23"));
 
+  gpg->flags.ignore_mdc_error = !!ctx->ignore_mdc_error;
+
 }
 
 
@@ -955,6 +957,19 @@ build_argv (engine_gpg_t gpg, const char *pgmname)
       argc++;
     }
 
+  if (gpg->flags.ignore_mdc_error)
+    {
+      argv[argc] = strdup ("--ignore-mdc-error");
+      if (!argv[argc])
+	{
+          int saved_err = gpg_error_from_syserror ();
+	  free (fd_data_map);
+	  free_argv (argv);
+	  return saved_err;
+        }
+      argc++;
+    }
+
   if (gpg->flags.offline)
     {
       argv[argc] = strdup ("--disable-dirmngr");