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authorSumit Bose <sbose@redhat.com>2012-08-09 10:10:42 +0200
committerJakub Hrozek <jhrozek@redhat.com>2012-08-15 15:57:54 +0200
commit60e51fd2764291df2332f36ff478777627d92b57 (patch)
tree23b790c3038b67be9b05555973af1555ccc8c978
parent819bb0b77780fc9009608f48ad353a2cb58fa9ac (diff)
downloadsssd_unused-60e51fd2764291df2332f36ff478777627d92b57.zip
sssd_unused-60e51fd2764291df2332f36ff478777627d92b57.tar.gz
sssd_unused-60e51fd2764291df2332f36ff478777627d92b57.tar.xz
Add python bindings for murmurhash3
-rw-r--r--Makefile.am21
-rw-r--r--contrib/sssd.spec.in1
-rw-r--r--src/python/pysss_murmur.c65
-rwxr-xr-xsrc/tests/pysss_murmur-test.py100
4 files changed, 184 insertions, 3 deletions
diff --git a/Makefile.am b/Makefile.am
index e89938e..726a858 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -146,7 +146,8 @@ PYTHON_TESTS =
if BUILD_PYTHON_BINDINGS
PYTHON_TESTS += $(srcdir)/src/config/SSSDConfigTest.py \
- $(srcdir)/src/tests/pyhbac-test.py
+ $(srcdir)/src/tests/pyhbac-test.py \
+ $(srcdir)/src/tests/pysss_murmur-test.py
endif
TESTS = \
@@ -205,7 +206,8 @@ libsss_crypt_la_LIBADD = \
if BUILD_PYTHON_BINDINGS
pyexec_LTLIBRARIES = \
pysss.la \
- pyhbac.la
+ pyhbac.la \
+ pysss_murmur.la
endif
dist_noinst_SCRIPTS = \
@@ -216,7 +218,8 @@ dist_noinst_SCRIPTS = \
src/config/SSSDConfigTest.py \
src/config/SSSDConfig/sssd_upgrade_config.py \
contrib/rhel/update_debug_levels.py \
- src/tests/pyhbac-test.py
+ src/tests/pyhbac-test.py \
+ src/tests/pysss_murmur-test.py
dist_noinst_DATA = \
src/config/testconfigs/sssd-valid.conf \
@@ -1539,6 +1542,18 @@ pyhbac_la_LIBADD = \
pyhbac_la_LDFLAGS = \
-avoid-version \
-module
+
+pysss_murmur_la_SOURCES = \
+ src/python/pysss_murmur.c \
+ src/util/murmurhash3.c
+pysss_murmur_la_CFLAGS = \
+ $(AM_CFLAGS) \
+ $(PYTHON_CFLAGS)
+pysss_murmur_la_LIBADD = \
+ $(PYTHON_LIBS)
+pysss_murmur_la_LDFLAGS = \
+ -avoid-version \
+ -module
endif
################
diff --git a/contrib/sssd.spec.in b/contrib/sssd.spec.in
index 90bd079..838e9f5 100644
--- a/contrib/sssd.spec.in
+++ b/contrib/sssd.spec.in
@@ -385,6 +385,7 @@ rm -rf $RPM_BUILD_ROOT
%{_mandir}/man1/sss_ssh_knownhostsproxy.1*
%endif
%{python_sitearch}/pysss.so
+%{python_sitearch}/pysss_murmur.so
%dir %{python_sitelib}/SSSDConfig
%{python_sitelib}/SSSDConfig/*.py*
diff --git a/src/python/pysss_murmur.c b/src/python/pysss_murmur.c
new file mode 100644
index 0000000..1e89681
--- /dev/null
+++ b/src/python/pysss_murmur.c
@@ -0,0 +1,65 @@
+/*
+ Authors:
+ Sumit Bose <sbose@redhat.com>
+
+ Copyright (C) 2012 Red Hat
+
+ This program 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 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <Python.h>
+
+#include "util/murmurhash3.h"
+
+PyDoc_STRVAR(murmurhash3_doc,
+"murmurhash3(key, key_len, seed) -> 32bit integer hash\n\
+\n\
+Calculate the murmur hash version 3 of the first key_len bytes from key\n\
+using the given seed."
+);
+
+static PyObject * py_murmurhash3(PyObject *module, PyObject *args)
+{
+ const char *key;
+ long key_len;
+ long long seed;
+ uint32_t hash;
+
+ if (!PyArg_ParseTuple(args, "slL", &key, &key_len, &seed)) {
+ PyErr_Format(PyExc_ValueError, "Invalid argument\n");
+ return NULL;
+ }
+
+ if (seed > UINT32_MAX || key_len > INT_MAX || key_len < 0 ||
+ key_len > strlen(key)) {
+ PyErr_Format(PyExc_ValueError, "Invalid value\n");
+ return NULL;
+ }
+
+ hash = murmurhash3(key, key_len, seed);
+
+ return PyLong_FromUnsignedLong((unsigned long) hash);
+}
+
+static PyMethodDef methods[] = {
+ {"murmurhash3", (PyCFunction) py_murmurhash3, METH_VARARGS, murmurhash3_doc},
+ {NULL,NULL, 0, NULL}
+};
+
+
+PyMODINIT_FUNC
+initpysss_murmur(void)
+{
+ Py_InitModule3("pysss_murmur", methods, "murmur hash functions");
+}
diff --git a/src/tests/pysss_murmur-test.py b/src/tests/pysss_murmur-test.py
new file mode 100755
index 0000000..715ea16
--- /dev/null
+++ b/src/tests/pysss_murmur-test.py
@@ -0,0 +1,100 @@
+#!/usr/bin/python
+# SSSD
+#
+# Unit tests for pysss_murmur
+#
+# Copyright (C) Sumit Bose <sbose@redhat.com> 2012
+#
+# This program 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 3 of the License, or
+# (at your option) any later version.
+#
+# This program 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+import unittest
+import sys
+import os
+import copy
+
+srcdir = os.getenv('builddir')
+if not srcdir:
+ srcdir = "."
+MODPATH = srcdir + "/.libs" #FIXME - is there a way to get this from libtool?
+
+def compat_assertItemsEqual(this, expected_seq, actual_seq, msg=None):
+ return this.assertEqual(sorted(expected_seq), sorted(actual_seq))
+
+def compat_assertIsInstance(this, obj, cls, msg=None):
+ return this.assertTrue(isinstance(obj, cls))
+
+# add compat methods for old unittest.TestCase versions
+# (python < 2.7, RHEL5 for instance)
+if not hasattr(unittest.TestCase, "assertItemsEqual"):
+ setattr(unittest.TestCase, "assertItemsEqual", compat_assertItemsEqual)
+if not hasattr(unittest.TestCase, "assertIsInstance"):
+ setattr(unittest.TestCase, "assertIsInstance", compat_assertIsInstance)
+
+class PySssMurmurImport(unittest.TestCase):
+ def setUp(self):
+ " Make sure we load the in-tree module "
+ self.system_path = sys.path[:]
+ sys.path = [ MODPATH ]
+
+ def tearDown(self):
+ " Restore the system path "
+ sys.path = self.system_path
+
+ def testImport(self):
+ " Import the module and assert it comes from tree "
+ try:
+ import pysss_murmur
+ except ImportError, e:
+ print >>sys.stderr, "Could not load the pysss_murmur module. Please check if it is compiled"
+ raise e
+ self.assertEqual(pysss_murmur.__file__, MODPATH + "/pysss_murmur.so")
+
+class PySssMurmurTest(unittest.TestCase):
+ def testExpectedHash(self):
+ hash = pysss_murmur.murmurhash3("S-1-5-21-2153326666-2176343378-3404031434", 41, 0xdeadbeef)
+ self.assertEqual(hash, 93103853)
+
+ def testInvalidArguments(self):
+ self.assertRaises(ValueError, pysss_murmur.murmurhash3, 1, 2, 3)
+ self.assertRaises(ValueError, pysss_murmur.murmurhash3, "test", 2)
+ self.assertRaises(ValueError, pysss_murmur.murmurhash3, "test")
+ self.assertRaises(ValueError, pysss_murmur.murmurhash3)
+ self.assertRaises(ValueError, pysss_murmur.murmurhash3, "test", -1, 3)
+ self.assertRaises(ValueError, pysss_murmur.murmurhash3, "test", 2,
+ 0xffffffffff)
+ self.assertRaises(ValueError, pysss_murmur.murmurhash3, "test",
+ 0xffffffffff, 3)
+
+
+if __name__ == "__main__":
+ error = 0
+
+ suite = unittest.TestLoader().loadTestsFromTestCase(PySssMurmurImport)
+ res = unittest.TextTestRunner().run(suite)
+ if not res.wasSuccessful():
+ error |= 0x1
+ # need to bail out here because pysss_murmur could not be imported
+ sys.exit(error)
+
+ # import the pysss_murmur module into the global namespace, but make sure
+ # it's the one in tree
+ sys.path.insert(0, MODPATH)
+ import pysss_murmur
+
+ suite = unittest.TestLoader().loadTestsFromTestCase(PySssMurmurTest)
+ res = unittest.TextTestRunner().run(suite)
+ if not res.wasSuccessful():
+ error |= 0x2
+
+ sys.exit(error)