Add GPGME_PROTOCOL_SPAWN and gpgme_op_spawn.

* src/gpgme.h.in (GPGME_PROTOCOL_SPAWN): New.
(GPGME_SPAWN_DETACHED, GPGME_SPAWN_ALLOW_SET_FG): New.
* src/gpgme.c (gpgme_set_protocol): Add new protocol.
(gpgme_get_protocol_name): Ditto.
* src/spawn.c: New.
* src/libgpgme.vers, src/gpgme.def: Add new public functions.
* src/engine-spawn.c: New.
* src/Makefile.am: Add new files.
* src/engine-backend.h (struct engine_ops): Add OPSPAWN.
* src/engine.c (engine_ops): Add _gpgme_engine_ops_spawn.
(gpgme_get_engine_info): Add Spawn to the list of protocols.
(_gpgme_engine_op_spawn): New.

* src/gpgme-tool.c (gt_protocol_from_name): Add new protocol.
(gt_spawn, cmd_spawn): New.

1 files changed, 22 insertions, 1 deletions

diff --git a/src/gpgme.h.in b/src/gpgme.h.in
index 050051a4..655602df 100644
--- a/src/gpgme.h.in
+++ b/src/gpgme.h.in
@@ -1,7 +1,7 @@
 /* gpgme.h - Public interface to GnuPG Made Easy.                   -*- c -*-
    Copyright (C) 2000 Werner Koch (dd9jn)
    Copyright (C) 2001, 2002, 2003, 2004, 2005, 2007, 2009
-                 2010, 2011, 2012, 2013 g10 Code GmbH
+                 2010, 2011, 2012, 2013, 2014 g10 Code GmbH
 
    This file is part of GPGME.
 
@@ -354,6 +354,7 @@ typedef enum
     GPGME_PROTOCOL_ASSUAN  = 3,  /* Low-level access to an Assuan server.  */
     GPGME_PROTOCOL_G13     = 4,
     GPGME_PROTOCOL_UISERVER= 5,
+    GPGME_PROTOCOL_SPAWN   = 6,  /* Direct access to any program.  */
     GPGME_PROTOCOL_DEFAULT = 254,
     GPGME_PROTOCOL_UNKNOWN = 255
   }
@@ -1694,6 +1695,26 @@ gpgme_error_t gpgme_op_card_edit (gpgme_ctx_t ctx, gpgme_key_t key,
 				  gpgme_edit_cb_t fnc, void *fnc_value,
 				  gpgme_data_t out);
 
+
+/* Flags for the spawn operations.  */
+#define GPGME_SPAWN_DETACHED      1
+#define GPGME_SPAWN_ALLOW_SET_FG  2
+
+
+/* Run the command FILE with the arguments in ARGV.  Connect stdin to
+   DATAIN, stdout to DATAOUT, and STDERR to DATAERR.  If one the data
+   streams is NULL, connect to /dev/null instead.  */
+gpgme_error_t gpgme_op_spawn_start (gpgme_ctx_t ctx,
+                                    const char *file, const char *argv[],
+                                    gpgme_data_t datain,
+                                    gpgme_data_t dataout, gpgme_data_t dataerr,
+                                    unsigned int flags);
+gpgme_error_t gpgme_op_spawn (gpgme_ctx_t ctx,
+                              const char *file, const char *argv[],
+                              gpgme_data_t datain,
+                              gpgme_data_t dataout, gpgme_data_t dataerr,
+                              unsigned int flags);
+
 
 /* Key management functions.  */
 struct _gpgme_op_keylist_result