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xen-changelog
[Xen-changelog] [xen-unstable] [Xend/ACM] Embed the policy schema in the
# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1209632106 -3600
# Node ID 931932f5fc6d4b97ff262e8ab2aa5f77f5a938a6
# Parent 2ab9f85f221fd99507cbca320a6958f377c4fc8d
[Xend/ACM] Embed the policy schema in the python file
This patch embeds the ACM policy's schema in the python file where the
schema is being accessed for verifying the policy XML. This way also
programs that cannot access a protected directory where the schema may
be located in can use this class.
Signed-off-by: Stefan Berger <stefanb@xxxxxxxxxx>
---
tools/python/xen/util/acmpolicy.py | 165 +++++++++++++++++++++++++++++++++----
1 files changed, 150 insertions(+), 15 deletions(-)
diff -r 2ab9f85f221f -r 931932f5fc6d tools/python/xen/util/acmpolicy.py
--- a/tools/python/xen/util/acmpolicy.py Thu May 01 09:53:26 2008 +0100
+++ b/tools/python/xen/util/acmpolicy.py Thu May 01 09:55:06 2008 +0100
@@ -48,8 +48,6 @@ ACM_SIMPLE_TYPE_ENFORCEMENT_POLICY = 2
ACM_SIMPLE_TYPE_ENFORCEMENT_POLICY = 2
ACM_POLICY_UNDEFINED = 15
-
-ACM_SCHEMA_FILE = ACM_POLICIES_DIR + "security_policy.xsd"
ACM_LABEL_UNLABELED = "__UNLABELED__"
ACM_LABEL_UNLABELED_DISPLAY = "unlabeled"
@@ -118,6 +116,153 @@ DEFAULT_policy = \
" </SecurityLabelTemplate>\n" +\
"</SecurityPolicyDefinition>\n"
+ACM_SCHEMA="""<?xml version="1.0" encoding="UTF-8"?>
+<!-- Author: Ray Valdez, Reiner Sailer {rvaldez,sailer}@us.ibm.com -->
+<!-- This file defines the schema, which is used to define -->
+<!-- the security policy and the security labels in Xen. -->
+
+<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema";
targetNamespace="http://www.ibm.com"; xmlns="http://www.ibm.com";
elementFormDefault="qualified">
+ <xsd:element name="SecurityPolicyDefinition">
+ <xsd:complexType>
+ <xsd:sequence>
+ <xsd:element ref="PolicyHeader" minOccurs="1"
maxOccurs="1"></xsd:element>
+ <xsd:element ref="SimpleTypeEnforcement"
minOccurs="0" maxOccurs="1"></xsd:element>
+ <xsd:element ref="ChineseWall" minOccurs="0"
maxOccurs="1"></xsd:element>
+ <xsd:element ref="SecurityLabelTemplate"
minOccurs="1" maxOccurs="1"></xsd:element>
+ </xsd:sequence>
+ </xsd:complexType>
+ </xsd:element>
+ <xsd:element name="PolicyHeader">
+ <xsd:complexType>
+ <xsd:sequence>
+ <xsd:element name="PolicyName" minOccurs="1"
maxOccurs="1" type="xsd:string"></xsd:element>
+ <xsd:element name="PolicyUrl" minOccurs="0"
maxOccurs="1" type="xsd:string"></xsd:element>
+ <xsd:element name="Reference" type="xsd:string"
minOccurs="0" maxOccurs="1" />
+ <xsd:element name="Date" minOccurs="0"
maxOccurs="1" type="xsd:string"></xsd:element>
+ <xsd:element name="NameSpaceUrl" minOccurs="0"
maxOccurs="1" type="xsd:string"></xsd:element>
+ <xsd:element name="Version" minOccurs="1"
maxOccurs="1" type="VersionFormat"/>
+ <xsd:element ref="FromPolicy" minOccurs="0"
maxOccurs="1"/>
+ </xsd:sequence>
+ </xsd:complexType>
+ </xsd:element>
+ <xsd:element name="ChineseWall">
+ <xsd:complexType>
+ <xsd:sequence>
+ <xsd:element ref="ChineseWallTypes"
minOccurs="1" maxOccurs="1" />
+ <xsd:element ref="ConflictSets" minOccurs="0"
maxOccurs="1" />
+ </xsd:sequence>
+ <xsd:attribute name="priority" type="PolicyOrder"
use="optional"></xsd:attribute>
+ </xsd:complexType>
+ </xsd:element>
+ <xsd:element name="SimpleTypeEnforcement">
+ <xsd:complexType>
+ <xsd:sequence>
+ <xsd:element ref="SimpleTypeEnforcementTypes" />
+ </xsd:sequence>
+ <xsd:attribute name="priority" type="PolicyOrder"
use="optional"></xsd:attribute>
+ </xsd:complexType>
+ </xsd:element>
+ <xsd:element name="SecurityLabelTemplate">
+ <xsd:complexType>
+ <xsd:sequence>
+ <xsd:element name="SubjectLabels" minOccurs="0"
maxOccurs="1">
+ <xsd:complexType>
+ <xsd:sequence>
+ <xsd:element
ref="VirtualMachineLabel" minOccurs="1" maxOccurs="unbounded"></xsd:element>
+ </xsd:sequence>
+ <xsd:attribute name="bootstrap"
type="xsd:string" use="required"></xsd:attribute>
+ </xsd:complexType>
+ </xsd:element>
+ <xsd:element name="ObjectLabels" minOccurs="0"
maxOccurs="1">
+ <xsd:complexType>
+ <xsd:sequence>
+ <xsd:element
ref="ResourceLabel" minOccurs="1" maxOccurs="unbounded"></xsd:element>
+ </xsd:sequence>
+ </xsd:complexType>
+ </xsd:element>
+ </xsd:sequence>
+ </xsd:complexType>
+ </xsd:element>
+ <xsd:element name="ChineseWallTypes">
+ <xsd:complexType>
+ <xsd:sequence>
+ <xsd:element maxOccurs="unbounded"
minOccurs="1" ref="Type" />
+ </xsd:sequence>
+ </xsd:complexType>
+ </xsd:element>
+ <xsd:element name="ConflictSets">
+ <xsd:complexType>
+ <xsd:sequence>
+ <xsd:element maxOccurs="unbounded"
minOccurs="1" ref="Conflict" />
+ </xsd:sequence>
+ </xsd:complexType>
+ </xsd:element>
+ <xsd:element name="SimpleTypeEnforcementTypes">
+ <xsd:complexType>
+ <xsd:sequence>
+ <xsd:element maxOccurs="unbounded"
minOccurs="1" ref="Type" />
+ </xsd:sequence>
+ </xsd:complexType>
+ </xsd:element>
+ <xsd:element name="Conflict">
+ <xsd:complexType>
+ <xsd:sequence>
+ <xsd:element maxOccurs="unbounded"
minOccurs="1" ref="Type" />
+ </xsd:sequence>
+ <xsd:attribute name="name" type="xsd:string"
use="required"></xsd:attribute>
+ </xsd:complexType>
+ </xsd:element>
+ <xsd:element name="VirtualMachineLabel">
+ <xsd:complexType>
+ <xsd:sequence>
+ <xsd:element name="Name"
type="NameWithFrom"></xsd:element>
+ <xsd:element ref="SimpleTypeEnforcementTypes"
minOccurs="0" maxOccurs="unbounded" />
+ <xsd:element ref="ChineseWallTypes"
minOccurs="0" maxOccurs="unbounded" />
+ </xsd:sequence>
+ </xsd:complexType>
+ </xsd:element>
+ <xsd:element name="ResourceLabel">
+ <xsd:complexType>
+ <xsd:sequence>
+ <xsd:element name="Name"
type="NameWithFrom"></xsd:element>
+ <xsd:element name="SimpleTypeEnforcementTypes"
type="SingleSimpleTypeEnforcementType" />
+ </xsd:sequence>
+ </xsd:complexType>
+ </xsd:element>
+ <xsd:element name="Name" type="xsd:string" />
+ <xsd:element name="Type" type="xsd:string" />
+ <xsd:simpleType name="PolicyOrder">
+ <xsd:restriction base="xsd:string">
+ <xsd:enumeration
value="PrimaryPolicyComponent"></xsd:enumeration>
+ </xsd:restriction>
+ </xsd:simpleType>
+ <xsd:element name="FromPolicy">
+ <xsd:complexType>
+ <xsd:sequence>
+ <xsd:element name="PolicyName" minOccurs="1"
maxOccurs="1" type="xsd:string"/>
+ <xsd:element name="Version" minOccurs="1"
maxOccurs="1" type="VersionFormat"/>
+ </xsd:sequence>
+ </xsd:complexType>
+ </xsd:element>
+ <xsd:simpleType name="VersionFormat">
+ <xsd:restriction base="xsd:string">
+ <xsd:pattern
value="[0-9]{1,8}.[0-9]{1,8}"></xsd:pattern>
+ </xsd:restriction>
+ </xsd:simpleType>
+ <xsd:complexType name="NameWithFrom">
+ <xsd:simpleContent>
+ <xsd:extension base="xsd:string">
+ <xsd:attribute name="from" type="xsd:string"
use="optional"></xsd:attribute>
+ </xsd:extension>
+ </xsd:simpleContent>
+ </xsd:complexType>
+ <xsd:complexType name="SingleSimpleTypeEnforcementType">
+ <xsd:sequence>
+ <xsd:element maxOccurs="1" minOccurs="1" ref="Type" />
+ </xsd:sequence>
+ </xsd:complexType>
+</xsd:schema>"""
+
def get_DEFAULT_policy(dom0label=""):
fromnode = ""
@@ -133,18 +278,7 @@ def initialize():
instdir = security.install_policy_dir_prefix
DEF_policy_file = "DEFAULT-security_policy.xml"
- xsd_file = "security_policy.xsd"
-
- files = [ xsd_file ]
-
- for file in files:
- if not os.path.isfile(policiesdir + "/" + file ):
- try:
- shutil.copyfile(instdir + "/" + file,
- policiesdir + "/" + file)
- except Exception, e:
- log.info("could not copy '%s': %s" %
- (file, str(e)))
+
#Install default policy.
f = open(policiesdir + "/" + DEF_policy_file, 'w')
if f:
@@ -219,7 +353,8 @@ class ACMPolicy(XSPolicy):
log.warn("Libxml2 python-wrapper is not installed on the system.")
return xsconstants.XSERR_SUCCESS
try:
- parserctxt = libxml2.schemaNewParserCtxt(ACM_SCHEMA_FILE)
+ parserctxt = libxml2.schemaNewMemParserCtxt(ACM_SCHEMA,
+ len(ACM_SCHEMA))
schemaparser = parserctxt.schemaParse()
valid = schemaparser.schemaNewValidCtxt()
doc = libxml2.parseDoc(self.toxml())
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