Add offline mode support for CMS keylisting

* doc/gpgme.texi: Document offline mode.
* src/context.h (gpgme_context): Add offline.
* src/engine-backend.h (keylist, keylist_ext): Add engine_flags.
* src/engine.c, src/engine.h (_gpgme_engine_op_keylist): Ditto.
  (_gpgme_engine_op_keylist_ext): Ditto.
* src/engine.h (GPGME_ENGINE_FLAG_OFFLINE): New.
* src/engine-gpg.c (gpg_keylist, gpg_keylist_ext): Ditto.
* src/engine-gpgsm.c (gpgsm_keylist): Handle engine_flags.
  (gpgsm_keylist_ext): Ditto.
* src/gpgme.c (gpgme_set_offline, gpgme_get_offline): New.
* src/gpgme.def (gpgme_set_offline, gpgme_get_offline): New.
* src/gpgme.h.in (gpgme_set_offline, gpgme_get_offline): New.
* src/libgpgme.vers (gpgme_set_offline, gpgme_get_offline): New.
* src/keylist.c (gpgme_op_keylist_start): Set offline flag.
  (gpgme_op_keylist_ext_start): Ditto.
* tests/run-keylist.c (show_usage, main): Add offline argument.

--
The offline engine option was introduced with gpgsm 2.1.6
it is mainly useful for a full keylisting that includes
the certificate validation but does not depend on external
information that could take an indefinite amount of time to
collect.

Signed-off-by: Andre Heinecke <[email protected]>

1 files changed, 24 insertions, 0 deletions

diff --git a/src/gpgme.c b/src/gpgme.c
index 628cdaee..c24b6200 100644
--- a/src/gpgme.c
+++ b/src/gpgme.c
@@ -472,6 +472,30 @@ gpgme_get_textmode (gpgme_ctx_t ctx)
 }
 
 
+/* Enable offline mode for this context. In offline mode dirmngr
+  will be disabled. */
+void
+gpgme_set_offline (gpgme_ctx_t ctx, int offline)
+{
+  TRACE2 (DEBUG_CTX, "gpgme_set_offline", ctx, "offline=%i (%s)",
+          offline, offline ? "yes" : "no");
+
+  if (!ctx)
+    return;
+
+  ctx->offline = offline;
+}
+
+/* Return the state of the offline flag.  */
+int
+gpgme_get_offline (gpgme_ctx_t ctx)
+{
+  TRACE2 (DEBUG_CTX, "gpgme_get_offline", ctx, "ctx->offline=%i (%s)",
+          ctx->offline, ctx->offline ? "yes" : "no");
+  return ctx->offline;
+}
+
+
 /* Set the number of certifications to include in an S/MIME message.
    The default is GPGME_INCLUDE_CERTS_DEFAULT.  -1 means all certs,
    and -2 means all certs except the root cert.  */