core: New context flag "auto-key-retrieve"

* src/gpgme.c (gpgme_set_ctx_flag, gpgme_get_ctx_flag): New flag
"auto-key-retrieve".
* src/context.h (gpgme_context): New field auto_key_retrieve.
* src/engine-backend.h (struct engine_ops): Add arg auto_key_retrieve
to field 'decrypt'.
* src/engine-gpg.c (gpg_decrypt): Add arg auto_key_retrieve and pass
option --auto-key-retrieve to gpg.  Adjust all callers.
(gpg_verify): Ditto.
* src/engine-gpgsm.c (gpgsm_decrypt): Add dummy arg auto_key_retrieve.
* src/engine-uiserver.c (uiserver_decrypt): Ditto.
* tests/run-verify.c (main): Add option --auto-key-retrieve.
--

This makes the --auto-key-retrieve option available in the GPGME API.

Test plan:
Run

  GPGME_DEBUG=9:out tests/run-verify SIGNEDFILE

with and without its new option --auto-key-retrieve and check in the
trace stored in "out" whether --auto-key-retrieve was passed to gpg.

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

1 files changed, 8 insertions, 0 deletions

diff --git a/src/gpgme.c b/src/gpgme.c
index 2b196a25..d0a5afee 100644
--- a/src/gpgme.c
+++ b/src/gpgme.c
@@ -531,6 +531,10 @@ gpgme_set_ctx_flag (gpgme_ctx_t ctx, const char *name, const char *value)
       if (!ctx->override_session_key)
         err = gpg_error_from_syserror ();
     }
+  else if (!strcmp (name, "auto-key-retrieve"))
+    {
+      ctx->auto_key_retrieve = abool;
+    }
   else
     err = gpg_error (GPG_ERR_UNKNOWN_NAME);
 
@@ -568,6 +572,10 @@ gpgme_get_ctx_flag (gpgme_ctx_t ctx, const char *name)
     {
       return ctx->override_session_key? ctx->override_session_key : "";
     }
+  else if (!strcmp (name, "auto-key-retrieve"))
+    {
+      return ctx->auto_key_retrieve? "1":"";
+    }
   else
     return NULL;
 }