BIND 10 trac871, updated. d6db622c5649e745fb3c64218e36c41545c47aed [trac871] implemented a minimal set of python lib for TSIG: just allowing construction of TSIGContext and add another signature to Message.to_wire() to send a signed message.
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bind10-changes at lists.isc.org
Fri Apr 29 08:43:22 UTC 2011
The branch, trac871 has been updated
via d6db622c5649e745fb3c64218e36c41545c47aed (commit)
via cce60befee1e0c25e20449b9242112cc0a777089 (commit)
from 89dd4548179485bdf76a84d289ab88ba65bd07bc (commit)
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- Log -----------------------------------------------------------------
commit d6db622c5649e745fb3c64218e36c41545c47aed
Author: JINMEI Tatuya <jinmei at isc.org>
Date: Fri Apr 29 01:41:59 2011 -0700
[trac871] implemented a minimal set of python lib for TSIG: just allowing construction of TSIGContext and add another signature to Message.to_wire() to send a signed message.
commit cce60befee1e0c25e20449b9242112cc0a777089
Author: JINMEI Tatuya <jinmei at isc.org>
Date: Fri Apr 29 00:37:11 2011 -0700
[trac871] unrelated cleanup: use unnamed namespace instead of file-scope static.
-----------------------------------------------------------------------
Summary of changes:
src/lib/dns/python/Makefile.am | 1 +
src/lib/dns/python/message_python.cc | 123 ++++++++--------
src/lib/dns/python/pydnspp.cc | 5 +
src/lib/dns/python/tests/Makefile.am | 1 +
src/lib/dns/python/tests/message_python_test.py | 35 +++++
.../dns/python/tests/tsig_python_test.py} | 22 ++--
src/lib/dns/python/tsig_python.cc | 157 ++++++++++++++++++++
7 files changed, 274 insertions(+), 70 deletions(-)
copy src/{bin/cmdctl/run_b10-cmdctl.sh.in => lib/dns/python/tests/tsig_python_test.py} (65%)
create mode 100644 src/lib/dns/python/tsig_python.cc
-----------------------------------------------------------------------
diff --git a/src/lib/dns/python/Makefile.am b/src/lib/dns/python/Makefile.am
index 9d171cd..9162f4e 100644
--- a/src/lib/dns/python/Makefile.am
+++ b/src/lib/dns/python/Makefile.am
@@ -25,6 +25,7 @@ EXTRA_DIST += rrttl_python.cc
EXTRA_DIST += rdata_python.cc
EXTRA_DIST += rrtype_python.cc
EXTRA_DIST += tsigkey_python.cc
+EXTRA_DIST += tsig_python.cc
# Python prefers .so, while some OSes (specifically MacOS) use a different
# suffix for dynamic objects. -module is necessary to work this around.
diff --git a/src/lib/dns/python/message_python.cc b/src/lib/dns/python/message_python.cc
index 058312e..e3cc53f 100644
--- a/src/lib/dns/python/message_python.cc
+++ b/src/lib/dns/python/message_python.cc
@@ -17,15 +17,16 @@
using namespace isc::dns;
using namespace isc::util;
+namespace {
//
// Declaration of the custom exceptions
// Initialization and addition of these go in the initModulePart
// function at the end of this file
//
-static PyObject* po_MessageTooShort;
-static PyObject* po_InvalidMessageSection;
-static PyObject* po_InvalidMessageOperation;
-static PyObject* po_InvalidMessageUDPSize;
+PyObject* po_MessageTooShort;
+PyObject* po_InvalidMessageSection;
+PyObject* po_InvalidMessageOperation;
+PyObject* po_InvalidMessageUDPSize;
//
// Definition of the classes
@@ -36,10 +37,6 @@ static PyObject* po_InvalidMessageUDPSize;
// and a type description
//
-// Section
-//
-
-//
// Message
//
@@ -55,36 +52,36 @@ public:
//
// General creation and destruction
-static int Message_init(s_Message* self, PyObject* args);
-static void Message_destroy(s_Message* self);
-
-static PyObject* Message_getHeaderFlag(s_Message* self, PyObject* args);
-static PyObject* Message_setHeaderFlag(s_Message* self, PyObject* args);
-static PyObject* Message_getQid(s_Message* self);
-static PyObject* Message_setQid(s_Message* self, PyObject* args);
-static PyObject* Message_getRcode(s_Message* self);
-static PyObject* Message_setRcode(s_Message* self, PyObject* args);
-static PyObject* Message_getOpcode(s_Message* self);
-static PyObject* Message_setOpcode(s_Message* self, PyObject* args);
-static PyObject* Message_getEDNS(s_Message* self);
-static PyObject* Message_setEDNS(s_Message* self, PyObject* args);
-static PyObject* Message_getRRCount(s_Message* self, PyObject* args);
+int Message_init(s_Message* self, PyObject* args);
+void Message_destroy(s_Message* self);
+
+PyObject* Message_getHeaderFlag(s_Message* self, PyObject* args);
+PyObject* Message_setHeaderFlag(s_Message* self, PyObject* args);
+PyObject* Message_getQid(s_Message* self);
+PyObject* Message_setQid(s_Message* self, PyObject* args);
+PyObject* Message_getRcode(s_Message* self);
+PyObject* Message_setRcode(s_Message* self, PyObject* args);
+PyObject* Message_getOpcode(s_Message* self);
+PyObject* Message_setOpcode(s_Message* self, PyObject* args);
+PyObject* Message_getEDNS(s_Message* self);
+PyObject* Message_setEDNS(s_Message* self, PyObject* args);
+PyObject* Message_getRRCount(s_Message* self, PyObject* args);
// use direct iterators for these? (or simply lists for now?)
-static PyObject* Message_getQuestion(s_Message* self);
-static PyObject* Message_getSection(s_Message* self, PyObject* args);
+PyObject* Message_getQuestion(s_Message* self);
+PyObject* Message_getSection(s_Message* self, PyObject* args);
//static PyObject* Message_beginQuestion(s_Message* self, PyObject* args);
//static PyObject* Message_endQuestion(s_Message* self, PyObject* args);
//static PyObject* Message_beginSection(s_Message* self, PyObject* args);
//static PyObject* Message_endSection(s_Message* self, PyObject* args);
-static PyObject* Message_addQuestion(s_Message* self, PyObject* args);
-static PyObject* Message_addRRset(s_Message* self, PyObject* args);
-static PyObject* Message_clear(s_Message* self, PyObject* args);
-static PyObject* Message_makeResponse(s_Message* self);
-static PyObject* Message_toText(s_Message* self);
-static PyObject* Message_str(PyObject* self);
-static PyObject* Message_toWire(s_Message* self, PyObject* args);
-static PyObject* Message_fromWire(s_Message* self, PyObject* args);
+PyObject* Message_addQuestion(s_Message* self, PyObject* args);
+PyObject* Message_addRRset(s_Message* self, PyObject* args);
+PyObject* Message_clear(s_Message* self, PyObject* args);
+PyObject* Message_makeResponse(s_Message* self);
+PyObject* Message_toText(s_Message* self);
+PyObject* Message_str(PyObject* self);
+PyObject* Message_toWire(s_Message* self, PyObject* args);
+PyObject* Message_fromWire(s_Message* self, PyObject* args);
// This list contains the actual set of functions we have in
// python. Each entry has
@@ -92,7 +89,7 @@ static PyObject* Message_fromWire(s_Message* self, PyObject* args);
// 2. Our static function here
// 3. Argument type
// 4. Documentation
-static PyMethodDef Message_methods[] = {
+PyMethodDef Message_methods[] = {
{ "get_header_flag", reinterpret_cast<PyCFunction>(Message_getHeaderFlag),
METH_VARARGS,
"Return whether the specified header flag bit is set in the "
@@ -175,7 +172,7 @@ static PyMethodDef Message_methods[] = {
// This defines the complete type for reflection in python and
// parsing of PyObject* to s_Message
// Most of the functions are not actually implemented and NULL here.
-static PyTypeObject message_type = {
+PyTypeObject message_type = {
PyVarObject_HEAD_INIT(NULL, 0)
"pydnspp.Message",
sizeof(s_Message), // tp_basicsize
@@ -225,7 +222,7 @@ static PyTypeObject message_type = {
0 // tp_version_tag
};
-static int
+int
Message_init(s_Message* self, PyObject* args) {
int i;
@@ -248,14 +245,14 @@ Message_init(s_Message* self, PyObject* args) {
return (-1);
}
-static void
+void
Message_destroy(s_Message* self) {
delete self->message;
self->message = NULL;
Py_TYPE(self)->tp_free(self);
}
-static PyObject*
+PyObject*
Message_getHeaderFlag(s_Message* self, PyObject* args) {
unsigned int messageflag;
if (!PyArg_ParseTuple(args, "I", &messageflag)) {
@@ -273,7 +270,7 @@ Message_getHeaderFlag(s_Message* self, PyObject* args) {
}
}
-static PyObject*
+PyObject*
Message_setHeaderFlag(s_Message* self, PyObject* args) {
long messageflag;
PyObject *on = Py_True;
@@ -304,12 +301,12 @@ Message_setHeaderFlag(s_Message* self, PyObject* args) {
}
}
-static PyObject*
+PyObject*
Message_getQid(s_Message* self) {
return (Py_BuildValue("I", self->message->getQid()));
}
-static PyObject*
+PyObject*
Message_setQid(s_Message* self, PyObject* args) {
long id;
if (!PyArg_ParseTuple(args, "l", &id)) {
@@ -333,7 +330,7 @@ Message_setQid(s_Message* self, PyObject* args) {
}
}
-static PyObject*
+PyObject*
Message_getRcode(s_Message* self) {
s_Rcode* rcode;
@@ -356,7 +353,7 @@ Message_getRcode(s_Message* self) {
return (rcode);
}
-static PyObject*
+PyObject*
Message_setRcode(s_Message* self, PyObject* args) {
s_Rcode* rcode;
if (!PyArg_ParseTuple(args, "O!", &rcode_type, &rcode)) {
@@ -371,7 +368,7 @@ Message_setRcode(s_Message* self, PyObject* args) {
}
}
-static PyObject*
+PyObject*
Message_getOpcode(s_Message* self) {
s_Opcode* opcode;
@@ -394,7 +391,7 @@ Message_getOpcode(s_Message* self) {
return (opcode);
}
-static PyObject*
+PyObject*
Message_setOpcode(s_Message* self, PyObject* args) {
s_Opcode* opcode;
if (!PyArg_ParseTuple(args, "O!", &opcode_type, &opcode)) {
@@ -409,7 +406,7 @@ Message_setOpcode(s_Message* self, PyObject* args) {
}
}
-static PyObject*
+PyObject*
Message_getEDNS(s_Message* self) {
s_EDNS* edns;
EDNS* edns_body;
@@ -429,7 +426,7 @@ Message_getEDNS(s_Message* self) {
return (edns);
}
-static PyObject*
+PyObject*
Message_setEDNS(s_Message* self, PyObject* args) {
s_EDNS* edns;
if (!PyArg_ParseTuple(args, "O!", &edns_type, &edns)) {
@@ -444,7 +441,7 @@ Message_setEDNS(s_Message* self, PyObject* args) {
}
}
-static PyObject*
+PyObject*
Message_getRRCount(s_Message* self, PyObject* args) {
unsigned int section;
if (!PyArg_ParseTuple(args, "I", §ion)) {
@@ -463,7 +460,7 @@ Message_getRRCount(s_Message* self, PyObject* args) {
}
// TODO use direct iterators for these? (or simply lists for now?)
-static PyObject*
+PyObject*
Message_getQuestion(s_Message* self) {
QuestionIterator qi, qi_end;
try {
@@ -502,7 +499,7 @@ Message_getQuestion(s_Message* self) {
return (list);
}
-static PyObject*
+PyObject*
Message_getSection(s_Message* self, PyObject* args) {
unsigned int section;
if (!PyArg_ParseTuple(args, "I", §ion)) {
@@ -559,7 +556,7 @@ Message_getSection(s_Message* self, PyObject* args) {
//static PyObject* Message_beginSection(s_Message* self, PyObject* args);
//static PyObject* Message_endSection(s_Message* self, PyObject* args);
//static PyObject* Message_addQuestion(s_Message* self, PyObject* args);
-static PyObject*
+PyObject*
Message_addQuestion(s_Message* self, PyObject* args) {
s_Question *question;
@@ -572,7 +569,7 @@ Message_addQuestion(s_Message* self, PyObject* args) {
Py_RETURN_NONE;
}
-static PyObject*
+PyObject*
Message_addRRset(s_Message* self, PyObject* args) {
PyObject *sign = Py_False;
int section;
@@ -599,7 +596,7 @@ Message_addRRset(s_Message* self, PyObject* args) {
}
}
-static PyObject*
+PyObject*
Message_clear(s_Message* self, PyObject* args) {
int i;
if (PyArg_ParseTuple(args, "i", &i)) {
@@ -620,13 +617,13 @@ Message_clear(s_Message* self, PyObject* args) {
}
}
-static PyObject*
+PyObject*
Message_makeResponse(s_Message* self) {
self->message->makeResponse();
Py_RETURN_NONE;
}
-static PyObject*
+PyObject*
Message_toText(s_Message* self) {
// Py_BuildValue makes python objects from native data
try {
@@ -641,7 +638,7 @@ Message_toText(s_Message* self) {
}
}
-static PyObject*
+PyObject*
Message_str(PyObject* self) {
// Simply call the to_text method we already defined
return (PyObject_CallMethod(self,
@@ -649,13 +646,20 @@ Message_str(PyObject* self) {
const_cast<char*>("")));
}
-static PyObject*
+PyObject*
Message_toWire(s_Message* self, PyObject* args) {
s_MessageRenderer* mr;
+ s_TSIGContext* tsig_ctx = NULL;
- if (PyArg_ParseTuple(args, "O!", &messagerenderer_type, &mr)) {
+ if (PyArg_ParseTuple(args, "O!|O!", &messagerenderer_type, &mr,
+ &tsig_context_type, &tsig_ctx)) {
try {
- self->message->toWire(*mr->messagerenderer);
+ if (tsig_ctx == NULL) {
+ self->message->toWire(*mr->messagerenderer);
+ } else {
+ self->message->toWire(*mr->messagerenderer,
+ *tsig_ctx->tsig_ctx);
+ }
// If we return NULL it is seen as an error, so use this for
// None returns
Py_RETURN_NONE;
@@ -671,7 +675,7 @@ Message_toWire(s_Message* self, PyObject* args) {
return (NULL);
}
-static PyObject*
+PyObject*
Message_fromWire(s_Message* self, PyObject* args) {
const char* b;
Py_ssize_t len;
@@ -765,3 +769,4 @@ initModulePart_Message(PyObject* mod) {
return (true);
}
+} // end of unnamed namespace
diff --git a/src/lib/dns/python/pydnspp.cc b/src/lib/dns/python/pydnspp.cc
index 27dbae6..2138198 100644
--- a/src/lib/dns/python/pydnspp.cc
+++ b/src/lib/dns/python/pydnspp.cc
@@ -56,6 +56,7 @@ static PyObject* po_DNSMessageBADVERS;
#include <dns/python/question_python.cc> // needs RRClass, RRType, RRTTL,
// Name
#include <dns/python/tsigkey_python.cc> // needs Name
+#include <dns/python/tsig_python.cc> // needs tsigkey
#include <dns/python/opcode_python.cc>
#include <dns/python/rcode_python.cc>
#include <dns/python/edns_python.cc> // needs Messagerenderer, Rcode
@@ -153,6 +154,10 @@ PyInit_pydnspp(void) {
return (NULL);
}
+ if (!initModulePart_TSIGContext(mod)) {
+ return (NULL);
+ }
+
return (mod);
}
diff --git a/src/lib/dns/python/tests/Makefile.am b/src/lib/dns/python/tests/Makefile.am
index 184f06d..9ee98c7 100644
--- a/src/lib/dns/python/tests/Makefile.am
+++ b/src/lib/dns/python/tests/Makefile.am
@@ -11,6 +11,7 @@ PYTESTS += rrclass_python_test.py
PYTESTS += rrset_python_test.py
PYTESTS += rrttl_python_test.py
PYTESTS += rrtype_python_test.py
+PYTESTS += tsig_python_test.py
PYTESTS += tsigkey_python_test.py
EXTRA_DIST = $(PYTESTS)
diff --git a/src/lib/dns/python/tests/message_python_test.py b/src/lib/dns/python/tests/message_python_test.py
index bccc596..811ecf3 100644
--- a/src/lib/dns/python/tests/message_python_test.py
+++ b/src/lib/dns/python/tests/message_python_test.py
@@ -62,6 +62,12 @@ def create_message():
message_render.add_rrset(Message.SECTION_ANSWER, rrset)
return message_render
+def strip_mutable_tsig_data(data):
+ # Unfortunately we cannot easily compare TSIG RR because we can't tweak
+ # current time. As a work around this helper function strips off the time
+ # dependent part of TSIG RDATA, i.e., the MAC (assuming HMAC-MD5) and
+ # Time Signed.
+ return data[0:-32] + data[-26:-22] + data[-6:]
class MessageTest(unittest.TestCase):
@@ -81,6 +87,8 @@ class MessageTest(unittest.TestCase):
self.bogus_section = Message.SECTION_ADDITIONAL + 1
self.bogus_below_section = Message.SECTION_QUESTION - 1
+ self.tsig_key = TSIGKey("www.example.com:SFuWd/q99SzF8Yzd1QbB9g==")
+ self.tsig_ctx = TSIGContext(self.tsig_key)
def test_init(self):
self.assertRaises(TypeError, Message, -1)
@@ -277,6 +285,33 @@ class MessageTest(unittest.TestCase):
self.assertRaises(InvalidMessageOperation, self.r.to_wire,
MessageRenderer())
+ def __common_tsigquery_setup(self):
+ self.r.set_opcode(Opcode.QUERY())
+ self.r.set_rcode(Rcode.NOERROR())
+ self.r.set_header_flag(Message.HEADERFLAG_RD)
+ self.r.add_question(Question(Name("www.example.com"),
+ RRClass("IN"), RRType("A")))
+
+ def __common_tsig_checks(self, expected_file):
+ renderer = MessageRenderer()
+ self.r.to_wire(renderer, self.tsig_ctx)
+ actual_wire = strip_mutable_tsig_data(renderer.get_data())
+ expected_wire = strip_mutable_tsig_data(read_wire_data(expected_file))
+ self.assertEqual(expected_wire, actual_wire)
+
+ def test_to_wire_with_tsig(self):
+ self.r.set_qid(0x2d65)
+ self.__common_tsigquery_setup()
+ self.__common_tsig_checks("message_toWire2.wire")
+
+ def test_to_wire_with_edns_tsig(self):
+ self.r.set_qid(0x6cd)
+ self.__common_tsigquery_setup()
+ edns = EDNS()
+ edns.set_udp_size(4096)
+ self.r.set_edns(edns)
+ self.__common_tsig_checks("message_toWire3.wire")
+
def test_to_text(self):
message_render = create_message()
diff --git a/src/lib/dns/python/tests/tsig_python_test.py b/src/lib/dns/python/tests/tsig_python_test.py
new file mode 100644
index 0000000..bffa0cf
--- /dev/null
+++ b/src/lib/dns/python/tests/tsig_python_test.py
@@ -0,0 +1,29 @@
+# Copyright (C) 2010 Internet Systems Consortium.
+#
+# Permission to use, copy, modify, and distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SYSTEMS CONSORTIUM
+# DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
+# INTERNET SYSTEMS CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
+# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
+# FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+# NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+# WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+import unittest
+from pydnspp import *
+
+class TSIGContextTest(unittest.TestCase):
+ tsig_key = TSIGKey('www.example.com:SFuWd/q99SzF8Yzd1QbB9g==')
+
+ def setUp(self):
+ # In the minimal implementation, we simply check constructing a
+ # TSIGContext doesn't cause any disruption. We can add more tests
+ # later.
+ self.tsig_ctx = TSIGContext(self.tsig_key)
+
+if __name__ == '__main__':
+ unittest.main()
diff --git a/src/lib/dns/python/tsig_python.cc b/src/lib/dns/python/tsig_python.cc
new file mode 100644
index 0000000..2e6d986
--- /dev/null
+++ b/src/lib/dns/python/tsig_python.cc
@@ -0,0 +1,157 @@
+// Copyright (C) 2011 Internet Systems Consortium, Inc. ("ISC")
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+#include <dns/tsig.h>
+
+using namespace isc::dns;
+
+//
+// Definition of the classes
+//
+
+// For each class, we need a struct, a helper functions (init, destroy,
+// and static wrappers around the methods we export), a list of methods,
+// and a type description
+
+namespace {
+// The s_* Class simply covers one instantiation of the object
+
+class s_TSIGContext : public PyObject {
+public:
+ TSIGContext* tsig_ctx;
+};
+
+//
+// We declare the functions here, the definitions are below
+// the type definition of the object, since both can use the other
+//
+
+// General creation and destruction
+int TSIGContext_init(s_TSIGContext* self, PyObject* args);
+void TSIGContext_destroy(s_TSIGContext* self);
+
+// These are the functions we export
+// For a minimal support, we don't need them.
+
+// This list contains the actual set of functions we have in
+// python. Each entry has
+// 1. Python method name
+// 2. Our static function here
+// 3. Argument type
+// 4. Documentation
+PyMethodDef TSIGContext_methods[] = {
+ { NULL, NULL, 0, NULL }
+};
+
+// This defines the complete type for reflection in python and
+// parsing of PyObject* to s_EDNS
+// Most of the functions are not actually implemented and NULL here.
+PyTypeObject tsig_context_type = {
+ PyVarObject_HEAD_INIT(NULL, 0)
+ "libdns_python.TSIGContext",
+ sizeof(s_TSIGContext), // tp_basicsize
+ 0, // tp_itemsize
+ (destructor)TSIGContext_destroy, // tp_dealloc
+ NULL, // tp_print
+ NULL, // tp_getattr
+ NULL, // tp_setattr
+ NULL, // tp_reserved
+ NULL, // tp_repr
+ NULL, // tp_as_number
+ NULL, // tp_as_sequence
+ NULL, // tp_as_mapping
+ NULL, // tp_hash
+ NULL, // tp_call
+ NULL, // tp_str
+ NULL, // tp_getattro
+ NULL, // tp_setattro
+ NULL, // tp_as_buffer
+ Py_TPFLAGS_DEFAULT, // tp_flags
+ "The TSIGContext class maintains a context of a signed session of "
+ "DNS transactions by TSIG.",
+ NULL, // tp_traverse
+ NULL, // tp_clear
+ NULL, // tp_richcompare
+ 0, // tp_weaklistoffset
+ NULL, // tp_iter
+ NULL, // tp_iternext
+ TSIGContext_methods, // tp_methods
+ NULL, // tp_members
+ NULL, // tp_getset
+ NULL, // tp_base
+ NULL, // tp_dict
+ NULL, // tp_descr_get
+ NULL, // tp_descr_set
+ 0, // tp_dictoffset
+ (initproc)TSIGContext_init, // tp_init
+ NULL, // tp_alloc
+ PyType_GenericNew, // tp_new
+ NULL, // tp_free
+ NULL, // tp_is_gc
+ NULL, // tp_bases
+ NULL, // tp_mro
+ NULL, // tp_cache
+ NULL, // tp_subclasses
+ NULL, // tp_weaklist
+ NULL, // tp_del
+ 0 // tp_version_tag
+};
+
+int
+TSIGContext_init(s_TSIGContext* self, PyObject* args) {
+ const s_TSIGKey* tsigkey_obj;
+
+ try {
+ if (PyArg_ParseTuple(args, "O!", &tsigkey_type, &tsigkey_obj)) {
+ self->tsig_ctx = new TSIGContext(*tsigkey_obj->tsigkey);
+ return (0);
+ }
+ } catch (...) {
+ PyErr_SetString(po_IscException, "Unexpected exception");
+ return (-1);
+ }
+
+ PyErr_Clear();
+ PyErr_SetString(PyExc_TypeError,
+ "Invalid arguments to TSIGContext constructor");
+
+ return (-1);
+}
+
+void
+TSIGContext_destroy(s_TSIGContext* const self) {
+ delete self->tsig_ctx;
+ self->tsig_ctx = NULL;
+ Py_TYPE(self)->tp_free(self);
+}
+
+// Module Initialization, all statics are initialized here
+bool
+initModulePart_TSIGContext(PyObject* mod) {
+ // We initialize the static description object with PyType_Ready(),
+ // then add it to the module. This is not just a check! (leaving
+ // this out results in segmentation faults)
+ if (PyType_Ready(&tsig_context_type) < 0) {
+ return (false);
+ }
+ Py_INCREF(&tsig_context_type);
+ void* p = &tsig_context_type;
+ PyModule_AddObject(mod, "TSIGContext", static_cast<PyObject*>(p));
+
+ addClassVariable(tsig_context_type, "DEFAULT_FUDGE",
+ Py_BuildValue("H", TSIGContext::DEFAULT_FUDGE));
+
+ return (true);
+}
+} // end of anonymous namespace
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