core: New public API gpgme_op_keylist_from_data_start.

* src/gpgme.h.in: New API gpgme_op_keylist_from_data_start.
* src/libgpgme.vers, src/gpgme.def: Add it.
* src/keylist.c (gpgme_op_keylist_from_data_start): New.
* src/engine-backend.h (engine_ops): Add field 'keylist_data'.  Change
all engines to pass NULL for it.
* src/engine.c (_gpgme_engine_op_keylist_data): New.
* src/engine-gpg.c (gpg_keylist_data): New.
(_gpgme_engine_ops_gpg): Register gpg_keylist_data.

* tests/run-keylist.c (main): New option --from-file.
--

Co-authored-by: Werner Koch <[email protected]>
GnuPG-bug-id: 2819

1 files changed, 36 insertions, 0 deletions

diff --git a/src/keylist.c b/src/keylist.c
index de9bbb2f..c88a7ca5 100644
--- a/src/keylist.c
+++ b/src/keylist.c
@@ -1142,6 +1142,42 @@ gpgme_op_keylist_ext_start (gpgme_ctx_t ctx, const char *pattern[],
 }
 
 
+/* Start a keylist operation within CTX to show keys contained
+ * in DATA.  */
+gpgme_error_t
+gpgme_op_keylist_from_data_start (gpgme_ctx_t ctx, gpgme_data_t data,
+                                  int reserved)
+{
+  gpgme_error_t err;
+  void *hook;
+  op_data_t opd;
+
+  TRACE_BEG (DEBUG_CTX, "gpgme_op_keylist_from_data_start", ctx);
+
+  if (!ctx || !data || reserved)
+    return TRACE_ERR (gpg_error (GPG_ERR_INV_VALUE));
+
+  err = _gpgme_op_reset (ctx, 2);
+  if (err)
+    return TRACE_ERR (err);
+
+  err = _gpgme_op_data_lookup (ctx, OPDATA_KEYLIST, &hook,
+                               sizeof (*opd), release_op_data);
+  opd = hook;
+  if (err)
+    return TRACE_ERR (err);
+
+  _gpgme_engine_set_status_handler (ctx->engine, keylist_status_handler, ctx);
+  err = _gpgme_engine_set_colon_line_handler (ctx->engine,
+                                              keylist_colon_handler, ctx);
+  if (err)
+    return TRACE_ERR (err);
+
+  err = _gpgme_engine_op_keylist_data (ctx->engine, data);
+  return TRACE_ERR (err);
+}
+
+
 /* Return the next key from the keylist in R_KEY.  */
 gpgme_error_t
 gpgme_op_keylist_next (gpgme_ctx_t ctx, gpgme_key_t *r_key)