Implement CommonTest and ObjClassTest.

Also fix bugs uncovered by testing.

libqpol/class_perm_query.c

@@ -376,7 +376,7 @@ int qpol_policy_get_class_by_name(const qpol_policy_t * policy, const char *name
 	if (internal_datum == NULL) {
 		*obj_class = NULL;
 		ERR(policy, "could not find class %s", name);
-		errno = ENOENT;
+		errno = EINVAL;
 		return STATUS_ERR;
 	}
 
@@ -541,7 +541,7 @@ int qpol_policy_get_common_by_name(const qpol_policy_t * policy, const char *nam
 	if (internal_datum == NULL) {
 		*common = NULL;
 		ERR(policy, "could not find common %s", name);
-		errno = ENOENT;
+		errno = EINVAL;
 		return STATUS_ERR;
 	}
 	*common = (qpol_common_t *) internal_datum;

setools/policyrep/objclass.py

@@ -56,7 +56,7 @@ class Common(symbol.PolicySymbol):
     """A common permission set."""
 
     def __contains__(self, other):
-        return (other in self.perms)
+        return other in self.perms
 
     @property
     def perms(self):
@@ -71,6 +71,15 @@ class ObjClass(Common):
 
     """An object class."""
 
+    def __contains__(self, other):
+        try:
+            if other in self.common.perms:
+                return True
+        except exception.NoCommon:
+            pass
+
+        return other in self.perms
+
     @property
     def common(self):
         """

setools/policyrep/qpol.i

@@ -1942,16 +1942,24 @@ typedef struct qpol_context {} qpol_context_t;
 /* qpol class */
 typedef struct qpol_class {} qpol_class_t;
 %extend qpol_class {
+    %exception qpol_class {
+      $action
+      if (!result) {
+        if (errno == EINVAL) {
+            PyErr_SetString(PyExc_ValueError, "Invalid class.");
+        } else {
+            PyErr_SetFromErrno(PyExc_OSError);
+        }
+
+        return NULL;
+      }
+    }
     qpol_class(qpol_policy_t *p, const char *name) {
         const qpol_class_t *c;
-        BEGIN_EXCEPTION
-        if (qpol_policy_get_class_by_name(p, name, &c)) {
-            SWIG_exception(SWIG_RuntimeError, "Class does not exist");
-        }
-        END_EXCEPTION
-    fail:
+        qpol_policy_get_class_by_name(p, name, &c);
         return (qpol_class_t*)c;
     };
+
     ~qpol_class() {
         /* no op */
         return;
@@ -2041,16 +2049,24 @@ typedef struct qpol_class {} qpol_class_t;
 /* qpol common */
 typedef struct qpol_common {} qpol_common_t;
 %extend qpol_common {
+    %exception qpol_common {
+      $action
+      if (!result) {
+        if (errno == EINVAL) {
+            PyErr_SetString(PyExc_ValueError, "Invalid common.");
+        } else {
+            PyErr_SetFromErrno(PyExc_OSError);
+        }
+
+        return NULL;
+      }
+    }
     qpol_common(qpol_policy_t *p, const char *name) {
         const qpol_common_t *c;
-        BEGIN_EXCEPTION
-        if (qpol_policy_get_common_by_name(p, name, &c)) {
-            SWIG_exception(SWIG_RuntimeError, "Common does not exist");
-        }
-        END_EXCEPTION
-    fail:
+        qpol_policy_get_common_by_name(p, name, &c);
         return (qpol_common_t*)c;
     };
+
     ~qpol_common() {
         /* no op */
         return;

tests/policyrep/__init__.py

@@ -17,6 +17,7 @@
 #
 from . import mls
 from . import mlsrule
+from . import objclass
 from . import polcap
 from . import rbacrule
 from . import role

tests/policyrep/objclass.conf

@@ -0,0 +1,149 @@
+class infoflow
+class infoflow2
+class infoflow3
+class infoflow4
+class infoflow5
+class infoflow6
+class infoflow7
+class infoflow8
+class infoflow9
+class infoflow10
+
+sid kernel
+sid security
+
+common infoflow
+{
+	low_w
+	med_w
+	hi_w
+	low_r
+	med_r
+	hi_r
+}
+
+common com_a
+{
+    hi_w
+    hi_r
+    super_r
+    super_w
+}
+
+common com_b
+{
+    send
+    recv
+}
+
+common com_c
+{
+    getattr
+    setattr
+    read
+    write
+}
+
+class infoflow
+inherits infoflow
+
+class infoflow2
+inherits infoflow
+{
+	super_w
+	super_r
+}
+
+class infoflow3
+{
+	null
+}
+
+class infoflow4
+inherits infoflow
+{
+	super_w
+	super_r
+	super_none
+	super_both
+	super_unmapped
+}
+
+class infoflow5
+inherits com_a
+
+class infoflow6
+inherits com_b
+
+class infoflow7
+inherits infoflow
+{
+    unmapped
+}
+
+class infoflow8
+{
+	super_w
+	super_r
+}
+
+class infoflow9
+inherits com_c
+
+class infoflow10
+{
+    read
+    write
+}
+
+sensitivity low_s;
+sensitivity medium_s alias med;
+sensitivity high_s;
+
+dominance { low_s med high_s }
+
+category here;
+category there;
+category elsewhere alias lost;
+
+#level decl
+level low_s:here.there;
+level med:here, elsewhere;
+level high_s:here.lost;
+
+#some constraints
+mlsconstrain infoflow hi_r ((l1 dom l2) or (t1 == mls_exempt));
+
+attribute mls_exempt;
+
+type system;
+role system;
+role system types system;
+
+#users
+user system roles system level med range low_s - high_s:here.lost;
+
+#normal constraints
+constrain infoflow hi_w (u1 == u2);
+
+#isids
+sid kernel system:system:system:medium_s:here
+sid security system:system:system:high_s:lost
+
+#fs_use
+fs_use_trans devpts system:object_r:system:low_s;
+fs_use_xattr ext3 system:object_r:system:low_s;
+fs_use_task pipefs system:object_r:system:low_s;
+
+#genfscon
+genfscon proc / system:object_r:system:med
+genfscon proc /sys system:object_r:system:low_s
+genfscon selinuxfs / system:object_r:system:high_s:here.there
+
+portcon tcp 80 system:object_r:system:low_s
+
+netifcon eth0 system:object_r:system:low_s system:object_r:system:low_s
+
+nodecon 127.0.0.1 255.255.255.255 system:object_r:system:low_s:here
+nodecon ::1 ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff system:object_r:system:low_s:here
+

tests/policyrep/objclass.py

@@ -0,0 +1,175 @@
+# Copyright 2015, Tresys Technology, LLC
+#
+# This file is part of SETools.
+#
+# SETools 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.
+#
+# SETools 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 SETools.  If not, see <http://www.gnu.org/licenses/>.
+#
+import unittest
+
+try:
+    from unittest.mock import Mock
+except ImportError:
+    from mock import Mock
+
+from setools import SELinuxPolicy
+from setools.policyrep import qpol
+from setools.policyrep.exception import InvalidCommon, InvalidClass
+from setools.policyrep.objclass import common_factory, class_factory
+
+
+class CommonTest(unittest.TestCase):
+
+    @staticmethod
+    def mock_common(name, perms):
+        policy = Mock(qpol.qpol_policy_t)
+        com = Mock(qpol.qpol_common_t)
+        com.name.return_value = name
+        com.perm_iter = lambda x: iter(perms)
+        return common_factory(policy, com)
+
+    @classmethod
+    def setUpClass(cls):
+        cls.p = SELinuxPolicy("tests/policyrep/objclass.conf")
+
+    def test_001_lookup(self):
+        """Common: factory policy lookup."""
+        com = common_factory(self.p.policy, "com_a")
+        self.assertEqual("com_a", com.qpol_symbol.name(self.p.policy))
+
+    def test_002_lookup_invalid(self):
+        """Common: factory policy invalid lookup."""
+        with self.assertRaises(InvalidCommon):
+            common_factory(self.p.policy, "INVALID")
+
+    def test_003_lookup_object(self):
+        """Common: factory policy lookup of Common object."""
+        com1 = common_factory(self.p.policy, "com_b")
+        com2 = common_factory(self.p.policy, com1)
+        self.assertIs(com2, com1)
+
+    def test_010_string(self):
+        """Common: string representation"""
+        com = self.mock_common("test10", ["perm1", "perm2"])
+        self.assertEquals("test10", str(com))
+
+    def test_020_perms(self):
+        """Common: permissions"""
+        com = self.mock_common("test20", ["perm1", "perm2"])
+        self.assertEquals(set(["perm1", "perm2"]), com.perms)
+
+    def test_030_statment(self):
+        """Common: statement."""
+        com = self.mock_common("test30", ["perm1", "perm2"])
+        self.assertRegexpMatches(com.statement(), "("
+                                 "common test30\n{\n\tperm1\n\tperm2\n}"
+                                 "|"
+                                 "common test30\n{\n\tperm2\n\tperm1\n}"
+                                 ")")
+
+    def test_040_contains(self):
+        """Common: contains"""
+        com = self.mock_common("test40", ["perm1", "perm2"])
+        self.assertIn("perm1", com)
+        self.assertNotIn("perm3", com)
+
+
+class ObjClassTest(unittest.TestCase):
+
+    @staticmethod
+    def mock_class(name, perms, com_perms=[]):
+        policy = Mock(qpol.qpol_policy_t)
+
+        cls = Mock(qpol.qpol_class_t)
+        cls.name.return_value = name
+        cls.perm_iter = lambda x: iter(perms)
+
+        if com_perms:
+            com = Mock(qpol.qpol_common_t)
+            com.name.return_value = name+"_common"
+            com.perm_iter = lambda x: iter(com_perms)
+            cls.common.return_value = com
+        else:
+            cls.common.side_effect = ValueError
+
+        return class_factory(policy, cls)
+
+    @classmethod
+    def setUpClass(cls):
+        cls.p = SELinuxPolicy("tests/policyrep/objclass.conf")
+
+    def test_001_lookup(self):
+        """ObjClass: factory policy lookup."""
+        cls = class_factory(self.p.policy, "infoflow")
+        self.assertEqual("infoflow", cls.qpol_symbol.name(self.p.policy))
+
+    def test_002_lookup_invalid(self):
+        """ObjClass: factory policy invalid lookup."""
+        with self.assertRaises(InvalidClass):
+            class_factory(self.p.policy, "INVALID")
+
+    def test_003_lookup_object(self):
+        """ObjClass: factory policy lookup of ObjClass object."""
+        cls1 = class_factory(self.p.policy, "infoflow4")
+        cls2 = class_factory(self.p.policy, cls1)
+        self.assertIs(cls2, cls1)
+
+    def test_010_string(self):
+        """ObjClass: string representation"""
+        cls = self.mock_class("test10", ["perm1", "perm2"])
+        self.assertEquals("test10", str(cls))
+
+    def test_020_perms(self):
+        """ObjClass: permissions"""
+        cls = self.mock_class("test20", ["perm1", "perm2"], com_perms=["perm3", "perm4"])
+        self.assertEquals(set(["perm1", "perm2"]), cls.perms)
+
+    def test_030_statment(self):
+        """ObjClass: statement, no common."""
+        cls = self.mock_class("test30", ["perm1", "perm2"])
+        self.assertRegexpMatches(cls.statement(), "("
+                                 "class test30\n{\n\tperm1\n\tperm2\n}"
+                                 "|"
+                                 "class test30\n{\n\tperm2\n\tperm1\n}"
+                                 ")")
+
+    def test_031_statment(self):
+        """ObjClass: statement, with common."""
+        cls = self.mock_class("test31", ["perm1", "perm2"], com_perms=["perm3", "perm4"])
+        self.assertRegexpMatches(cls.statement(), "("
+                                 "class test31\ninherits test31_common\n{\n\tperm1\n\tperm2\n}"
+                                 "|"
+                                 "class test31\ninherits test31_common\n{\n\tperm2\n\tperm1\n}"
+                                 ")")
+
+    def test_032_statment(self):
+        """ObjClass: statement, with common, no class perms."""
+        cls = self.mock_class("test32", [], com_perms=["perm3", "perm4"])
+        self.assertRegexpMatches(cls.statement(), "("
+                                 "class test32\ninherits test32_common"
+                                 "|"
+                                 "class test32\ninherits test32_common"
+                                 ")")
+
+    def test_040_contains(self):
+        """ObjClass: contains"""
+        cls = self.mock_class("test40", ["perm1", "perm2"])
+        self.assertIn("perm1", cls)
+        self.assertNotIn("perm3", cls)
+
+    def test_041_contains_common(self):
+        """ObjClass: contains, with common"""
+        cls = self.mock_class("test41", ["perm1", "perm2"], com_perms=["perm3", "perm4"])
+        self.assertIn("perm1", cls)
+        self.assertIn("perm3", cls)
+        self.assertNotIn("perm5", cls)