Add API gpgme_op_random_bytes.

* src/genrandom.c: New.
* src/Makefile.am: Add new file.
* src/engine-backend.h (struct engine_ops): Add func ptr getdirect.
Adjust all engine_ops.
* src/engine-gpg.c (gpg_getdirect): New.
(_gpgme_engine_ops_gpg): Connect new handler.
* src/gpgme.h.in (gpgme_random_mode_t): New.
(GPGME_RANDOM_MODE_NORMAL): New.
(GPGME_RANDOM_MODE_ZBASE32): New.
(gpgme_op_random_bytes): New public function
* src/libgpgme.vers: Add function.
* src/gpgme.def: Add function.

* tests/run-genrandom.c: New.
* tests/Makefile.am: Add new file.
--

This is a first take on this the mode parameter allows to extend the
function if ever needed.  Due to the gpg calling and fd setup overhead
this function is not yet very fast but its purpose is to get
"approved" random bytes.  We might eventually extend it to keep a
small internal cache of random numbers and get for example 128 random
bytes directly from gpg and deliver only the few required.

GnuPG-bug-id: 6694

1 files changed, 4 insertions, 0 deletions

diff --git a/src/engine.h b/src/engine.h
index 8c2d03ca..7befec90 100644
--- a/src/engine.h
+++ b/src/engine.h
@@ -185,6 +185,10 @@ gpgme_error_t _gpgme_engine_op_assuan_transact
                  gpgme_assuan_status_cb_t status_cb,
                  void *status_cb_value);
 
+gpgme_error_t _gpgme_engine_op_getdirect (engine_t engine, const char *argv[],
+                                          gpgme_data_t dataout,
+                                          unsigned int flags);
+
 gpgme_error_t _gpgme_engine_op_conf_load (engine_t engine,
 					  gpgme_conf_comp_t *conf_p);
 gpgme_error_t _gpgme_engine_op_conf_save (engine_t engine,