Python 3 port of PyME

* The entirety of the Python 3 port of PyME up to commit
  2145348ec54c6027f2ea20f695de0277e2871405
* The old commit log has been saved as
  lang/py3-pyme/docs/old-commits.log
* Can be viewed as a normal (separate) git repository at
  https://github.com/adversary-org/pyme3
* Utilising the submodule feature of git was deliberately skipped on
  humanitarian grounds (in order to prevent pain and suffering on the
  part of anyone having to manage this repository).

1 files changed, 154 insertions, 0 deletions

diff --git a/lang/py3-pyme/helpers.c b/lang/py3-pyme/helpers.c
new file mode 100644
index 00000000..b53dbdd8
--- /dev/null
+++ b/lang/py3-pyme/helpers.c
@@ -0,0 +1,154 @@
+/*
+# $Id$
+# Copyright (C) 2004 Igor Belyi <[email protected]>
+# Copyright (C) 2002 John Goerzen <[email protected]>
+#
+#    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("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 = PyLong_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, PyBytes_FromString(uid_hint));
+  PyTuple_SetItem(args, 1, PyBytes_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, PyBytes_AsString(retval), PyBytes_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, PyBytes_FromString(what));
+  PyTuple_SetItem(args, 1, PyLong_FromLong((long) type));
+  PyTuple_SetItem(args, 2, PyLong_FromLong((long) current));
+  PyTuple_SetItem(args, 3, PyLong_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);
+}