python: Support the Assuan engine.

* lang/python/gpgme.i: Add typemaps for the Assuan protocol callbacks.
* lang/python/helpers.c (_pyme_assuan_{data,inquire,status}_cb): New
functions.
* lang/python/private.h (_pyme_assuan_{data,inquire,status}_cb): New
prototypes.
* lang/python/pyme/core.py (Context.assuan_transact): New method.
* lang/python/pyme/util.py (percent_escape): New function.
* lang/python/tests/Makefile.am (py_tests): Add new test.
* lang/python/tests/t-protocol-assuan.py: New file.

Signed-off-by: Justus Winter <[email protected]>

2 files changed, 68 insertions, 1 deletions

diff --git a/lang/python/tests/Makefile.am b/lang/python/tests/Makefile.am
index b2e725fa..bc571fe4 100644
--- a/lang/python/tests/Makefile.am
+++ b/lang/python/tests/Makefile.am
@@ -49,7 +49,8 @@ py_tests = t-wrapper.py \
 	t-wait.py \
 	t-encrypt-large.py \
 	t-file-name.py \
-	t-idiomatic.py
+	t-idiomatic.py \
+	t-protocol-assuan.py
 
 TESTS = initial.py $(py_tests) final.py
 EXTRA_DIST = support.py $(TESTS) encrypt-only.asc sign-only.asc
diff --git a/lang/python/tests/t-protocol-assuan.py b/lang/python/tests/t-protocol-assuan.py
new file mode 100755
index 00000000..30907a1b
--- /dev/null
+++ b/lang/python/tests/t-protocol-assuan.py
@@ -0,0 +1,66 @@
+#!/usr/bin/env python3
+
+# Copyright (C) 2016 g10 Code GmbH
+#
+# This file is part of GPGME.
+#
+# GPGME is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# GPGME is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General
+# Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this program; if not, see <http://www.gnu.org/licenses/>.
+
+import pyme
+
+with pyme.Context(protocol=pyme.constants.PROTOCOL_ASSUAN) as c:
+    # Do nothing.
+    c.assuan_transact('nop')
+    c.assuan_transact('NOP')
+    c.assuan_transact(['NOP'])
+
+    err = c.assuan_transact('idontexist')
+    assert err.getsource() == pyme.errors.SOURCE_GPGAGENT
+    assert err.getcode() == pyme.errors.ASS_UNKNOWN_CMD
+
+    # Invoke the pinentry to get a confirmation.
+    c.assuan_transact(['GET_CONFIRMATION', 'Hello there'])
+
+    data = []
+    def data_cb(line):
+        data.append(line)
+
+    err = c.assuan_transact(['GETINFO', 'version'], data_cb=data_cb)
+    assert not err
+    assert len(data) == 1
+
+    data = []
+    err = c.assuan_transact(['GETINFO', 's2k_count'], data_cb=data_cb)
+    if not err:
+        assert len(data) == 1
+        assert int(data[0]) > 0
+
+    # XXX HELP sends status lines if we could use ASSUAN_CONVEY_COMMENTS.
+
+    status = []
+    def status_cb(line, args):
+        status.append((line, args))
+
+    alphas_grip = '76F7E2B35832976B50A27A282D9B87E44577EB66'
+    err = c.assuan_transact(['KEYINFO', alphas_grip], status_cb=status_cb)
+    if not err:
+        assert len(status) == 1
+        line, args = status[0]
+        assert line.startswith('KEYINFO')
+        assert args.startswith(alphas_grip)
+
+    # XXX: test these callbacks, e.g. using PRESET_PASSPHRASE
+    # XXX: once issue2428 is resolved
+    def inq_cb(name, args):
+        print("inq_cb", name, args)