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/*
# $Id: helpers.c,v 1.11 2008/11/26 02:38:33 belyi Exp $
# Copyright (C) 2004 Igor Belyi <belyi@users.sourceforge.net>
# Copyright (C) 2002 John Goerzen <jgoerzen@complete.org>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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 library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdio.h>
#include <gpgme.h>
#include <stdlib.h>
#include <string.h>
#include "Python.h"
#include "helpers.h"
static PyObject *GPGMEError = NULL;
void pygpgme_exception_init(void) {
if (GPGMEError == NULL) {
PyObject *errors;
errors = PyImport_ImportModule("pyme.errors");
if (errors) {
GPGMEError=PyDict_GetItemString(PyModule_GetDict(errors), "GPGMEError");
Py_XINCREF(GPGMEError);
}
}
}
gpgme_error_t pygpgme_exception2code(void) {
gpgme_error_t err_status = gpg_error(GPG_ERR_GENERAL);
if (GPGMEError && PyErr_ExceptionMatches(GPGMEError)) {
PyObject *type = 0, *value = 0, *traceback = 0;
PyObject *error = 0;
PyErr_Fetch(&type, &value, &traceback);
PyErr_NormalizeException(&type, &value, &traceback);
error = PyObject_GetAttrString(value, "error");
err_status = PyInt_AsLong(error);
Py_DECREF(error);
PyErr_Restore(type, value, traceback);
}
return err_status;
}
void pygpgme_clear_generic_cb(PyObject **cb) {
Py_DECREF(*cb);
}
static gpgme_error_t pyPassphraseCb(void *hook,
const char *uid_hint,
const char *passphrase_info,
int prev_was_bad,
int fd) {
PyObject *pyhook = (PyObject *) hook;
PyObject *func = NULL;
PyObject *args = NULL;
PyObject *retval = NULL;
PyObject *dataarg = NULL;
gpgme_error_t err_status = 0;
pygpgme_exception_init();
if (PyTuple_Check(pyhook)) {
func = PyTuple_GetItem(pyhook, 0);
dataarg = PyTuple_GetItem(pyhook, 1);
args = PyTuple_New(4);
} else {
func = pyhook;
args = PyTuple_New(3);
}
PyTuple_SetItem(args, 0, PyString_FromString(uid_hint));
PyTuple_SetItem(args, 1, PyString_FromString(passphrase_info));
PyTuple_SetItem(args, 2, PyBool_FromLong((long)prev_was_bad));
if (dataarg) {
Py_INCREF(dataarg); /* Because GetItem doesn't give a ref but SetItem taketh away */
PyTuple_SetItem(args, 3, dataarg);
}
retval = PyObject_CallObject(func, args);
Py_DECREF(args);
if (PyErr_Occurred()) {
err_status = pygpgme_exception2code();
} else {
if (!retval) {
write(fd, "\n", 1);
} else {
write(fd, PyString_AsString(retval), PyString_Size(retval));
write(fd, "\n", 1);
Py_DECREF(retval);
}
}
return err_status;
}
void pygpgme_set_passphrase_cb(gpgme_ctx_t ctx, PyObject *cb,
PyObject **freelater) {
if (cb == Py_None) {
gpgme_set_passphrase_cb(ctx, NULL, NULL);
return;
}
Py_INCREF(cb);
*freelater = cb;
gpgme_set_passphrase_cb(ctx, (gpgme_passphrase_cb_t)pyPassphraseCb, (void *) cb);
}
static void pyProgressCb(void *hook, const char *what, int type, int current,
int total) {
PyObject *func = NULL, *dataarg = NULL, *args = NULL, *retval = NULL;
PyObject *pyhook = (PyObject *) hook;
if (PyTuple_Check(pyhook)) {
func = PyTuple_GetItem(pyhook, 0);
dataarg = PyTuple_GetItem(pyhook, 1);
args = PyTuple_New(5);
} else {
func = pyhook;
args = PyTuple_New(4);
}
PyTuple_SetItem(args, 0, PyString_FromString(what));
PyTuple_SetItem(args, 1, PyInt_FromLong((long) type));
PyTuple_SetItem(args, 2, PyInt_FromLong((long) current));
PyTuple_SetItem(args, 3, PyInt_FromLong((long) total));
if (dataarg) {
Py_INCREF(dataarg); /* Because GetItem doesn't give a ref but SetItem taketh away */
PyTuple_SetItem(args, 4, dataarg);
}
retval = PyObject_CallObject(func, args);
Py_DECREF(args);
Py_XDECREF(retval);
}
void pygpgme_set_progress_cb(gpgme_ctx_t ctx, PyObject *cb, PyObject **freelater){
if (cb == Py_None) {
gpgme_set_progress_cb(ctx, NULL, NULL);
return;
}
Py_INCREF(cb);
*freelater = cb;
gpgme_set_progress_cb(ctx, (gpgme_progress_cb_t) pyProgressCb, (void *) cb);
}
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