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__pycache__	-	Open
access_control.py	5.86 MB	View DL Edit
analyze.py	25.87 MB	View DL Edit
audit_data.py	40.52 MB	View DL Edit
avc_audit.py	14.94 MB	View DL Edit
config.py	20.7 MB	View DL Edit
email_alert.py	5.81 MB	View DL Edit
errcode.py	3.47 MB	View DL Edit
html_util.py	2.03 MB	View DL Edit
Plugin.py	5.18 MB	View DL Edit
rpc.py	37.01 MB	View DL Edit
rpc_interfaces.py	4.68 MB	View DL Edit
server.py	33.67 MB	View DL Edit
serverconnection.py	6.14 MB	View DL Edit
signature.py	33.26 MB	View DL Edit
util.py	34.57 MB	View DL Edit
uuid.py	16.52 MB	View DL Edit
xml_serialize.py	15.83 MB	View DL Edit
__init__.py	741 B	View DL Edit

Edit file: /usr/lib/python3.9/site-packages/setroubleshoot/xml_serialize.py

from __future__ import absolute_import
# Authors: John Dennis <jdennis@redhat.com>
#
# Copyright (C) 2007 Red Hat, Inc.
#
# 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 2 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, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#

# Escaping
# xmlEncodeEntitiesReentrant(), encodeEntitiesReentrant()
# xmlNewTextChild()
# stringDecodeEntities

__all__ = [
    'string_to_xmlnode',
    'string_to_cdata_xmlnode',

'validate_database_doc',
    'boolean',
    'xml_attributes',
    'xml_attribute_dict',
    'xml_child_elements_iter',
    'xml_child_elements',
    'xml_get_child_element_by_name',
    'xml_get_child_elements_by_name',
    'xml_child_element_names',
    'xml_has_child_elements',

'XmlSerialize',
]

import sys
from types import *
import libxml2

import syslog
from setroubleshoot.config import get_config
from setroubleshoot.errcode import *
from setroubleshoot.util import *

from six import add_metaclass, string_types

#------------------------------------------------------------------------

i18n_encoding = get_config('general', 'i18n_encoding')

#------------------------------------------------------------------------

def validate_database_doc(doc):
    if doc is None:
        log_debug("validate_database_doc: doc is empty, validate fails")
        return False
    root_node = doc.getRootElement()
    if root_node is None:
        log_debug("validate_database_doc: root is empty, validate fails")
        return False
    version = root_node.prop('version')
    if version is None:
        log_debug("validate_database_doc: version is empty, validate fails")
        return False
    else:
        return database_version_compatible(version)

def boolean(value):
    'convert value to bool'
    if isinstance(value, bool):
        return value
    elif isinstance(value, string_types):
        value = value.lower()
        if value in ('t', 'true', '1'):
            return True
        elif value in ('f', 'false', '0'):
            return False
        else:
            raise ValueError("cannot convert (%s) to boolean" % value)
    elif isinstance(value, int):
        return bool(value)
    else:
        raise ValueError("cannot convert (%s) to boolean" % value)

def string_to_xmlnode(doc, value):
    return libxml2.newText(str(value))

def string_to_cdata_xmlnode(doc, value):
    return doc.newCDataBlock(value, len(value))

# newChild() content is a string, which will be added as children

# addChild() adds xmlNode

#    newChild(None, name, stringGetNodeList(value))
# newTextChild --> newDocRawNode --> newDocNode;newDocText --> newText --> strdup(content)
# newChild --> newDocNode --> newNode;stringGetNodeList(content) # note: this inserts entity nodes if content contains &;

# xmlEncodeEntitiesReentrant called from xmlNodeListGetString
# xmlEncodeSpecialChars called from xmlNodeListGetRawString
#------------------------------------------------------------------------

def xml_attributes(node):
    prop = node.get_properties()
    while prop:
        yield prop.get_name(), prop.get_content()
        prop = prop.get_next()

def xml_attribute_dict(node):
    props = {}
    for name, value in xml_attributes(node):
        props[name] = value
    return props

def xml_child_elements_iter(node):
    child = node.get_children()
    while child:
        if child.get_type() == 'element':
            yield child
        child = child.get_next()

def xml_get_child_element_by_name(node, name):
    child = node.get_children()
    while child:
        if child.get_type() == 'element':
            if child.get_name() == name:
                return child
        child = child.get_next()
    return None

def xml_get_child_elements_by_name(node, name):
    elements = []
    child = node.get_children()
    while child:
        if child.get_type() == 'element':
            if child.get_name() == name:
                elements.append(child)
        child = child.get_next()
    return elements

def xml_child_elements(node):
    return list(xml_child_elements_iter(node))

def xml_child_element_names(node):
    return [e.get_name() for e in xml_child_elements_iter(node)]

def xml_has_child_elements(node):
    child = node.get_children()
    while child:
        if child.get_type() == 'element':
            return True
        child = child.get_next()
    return False

#------------------------------------------------------------------------

class XmlSerializeMetaData(type):

def __new__(cls, classname, bases, classdict):
        #print "new: cls=%s, name=%s bases=%s dict=%s" % (cls, classname, bases, classdict)

if classname == 'XmlSerialize':
            return type.__new__(cls, classname, bases, classdict)

normal_init = classdict.get('__init__')
        xml_init = classdict.get('init_from_xml_node', None)
        _init_postprocess = classdict.get('_init_postprocess', None)
        if xml_init is None:
            for base_cls in bases:
                #print "searching %s" % base_cls
                xml_init = base_cls.__dict__.get('init_from_xml_node', None)
                if xml_init is not None:
                    #print "found in %s" % base_cls
                    break
        else:
            pass
            #print "found in class %s" % classname

def wrapped_init(*args, **kwds):
            if len(args) == 2 and isinstance(args[1], libxml2.xmlNode):
                xml_init(*args, **kwds)
                if _init_postprocess is not None:
                    _init_postprocess(args[0])
            else:
                normal_init(*args, **kwds)

classdict['__init__'] = wrapped_init
        return type.__new__(cls, classname, bases, classdict)

def __init__(cls, classname, bases, classdict):
        #print "init: cls=%s, name=%s bases=%s dict=%s" % (cls, classname, bases, classdict)
        super(XmlSerializeMetaData, cls).__init__(classname, bases, classdict)

xml_info = classdict.get('_xml_info')
        if not xml_info:
            return
        if xml_info == 'unstructured':
            cls._unstructured = True
        else:
            cls._unstructured = False
            cls._elements = [x for x in list(xml_info.keys()) if xml_info[x]['XMLForm'] == 'element']
            cls._attributes = [x for x in list(xml_info.keys()) if xml_info[x]['XMLForm'] == 'attribute']
            cls._names = cls._elements + cls._attributes

cls._elements.sort()
            cls._attributes.sort()
            cls._names.sort()

@add_metaclass(XmlSerializeMetaData)
class XmlSerialize(object):

def __init__(self):
        self._init_defaults()

def __str__(self):
        return self.get_xml_text_doc()

def _init_defaults(self):
        # Initialize each known class variable to avoid KeyError on access
        if self._xml_info == 'unstructured':
            return
        for name in self._names:
            name_info = self._xml_info[name]
            default = name_info.get('default', None)
            if default is not None:
                setattr(self, name, default())
            else:
                if name_info.get('list'):
                    setattr(self, name, [])
                else:
                    setattr(self, name, None)

def get_elements_and_attributes(self):
        if self._unstructured:
            elements = [x for x in list(self.__dict__.keys()) if not x.startswith('_')]
            attributes = []
        else:
            elements = self._elements
            attributes = self._attributes
        return(elements, attributes)

def get_xml_doc(self, obj_name=None):
        doc = libxml2.newDoc("1.0")
        root = self.get_xml_nodes(doc, obj_name)
        doc.setRootElement(root)
        return doc

def get_xml_text_doc(self, obj_name=None):
        doc = text_doc = None
        try:
            doc = self.get_xml_doc(obj_name)
            text_doc = doc.serialize(encoding=i18n_encoding, format=1)
        finally:
            if doc is not None:
                doc.freeDoc()
        return text_doc

def read_xml(self, buf, obj_name=None):
        doc = None
        try:
            try:
                doc = libxml2.parseDoc(buf.strip())
                root_node = doc.getRootElement()
                self.init_from_xml_node(doc, obj_name)
            except libxml2.parserError as e:
                syslog.syslog(syslog.LOG_ERR, "read_xml() libxml2.parserError: %s" % e)
                return
        finally:
            if doc is not None:
                doc.freeDoc()

def read_xml_file(self, xmlfile, obj_name=None, validate_doc=None):
        doc = None
        try:
            try:
                doc = libxml2.parseFile(xmlfile)
                if validate_doc:
                    if not validate_doc(doc):
                        return False
                self.init_from_xml_node(doc, obj_name)
            except libxml2.parserError as e:
                syslog.syslog(syslog.LOG_ERR, "read_xml_file() libxml2.parserError: %s" % e)
                return False
            except Exception as e:
                syslog.syslog(syslog.LOG_ERR, "read_xml_file() error: %s" % e)
                return False
        finally:
            if doc is not None:
                doc.freeDoc()
        return True

def write_xml(self, obj_name=None, f=None):
        try:
            need_to_close = False
            if f is None:
                f = sys.stdout
            elif isinstance(f, string_types):
                f = open(f, "w")
                need_to_close = True
            elif isinstance(f, FileType):
                pass
            else:
                raise ValueError("bad file parameter %s" % f)

f.write(self.get_xml_text_doc(obj_name))
            if need_to_close:
                f.close()
        except Exception as e:
            syslog.syslog(syslog.LOG_ERR, "could not write %s: %s" % (f, e))

def get_xml_nodes(self, doc, obj_name=None):
        elements, attributes = self.get_elements_and_attributes()
        if obj_name is None:
            obj_name = self.__class__.__name__
        root = libxml2.newNode(obj_name)

for name in attributes:
            name_info = self._xml_info[name]
            typecast = name_info.get('export_typecast', str)
            value = getattr(self, name)
            if value is not None:
                root.setProp(name, typecast(value))

for name in elements:
            try:
                if self._xml_info == 'unstructured':
                    typecast = string_to_xmlnode
                    list_item_name = None
                else:
                    name_info = self._xml_info[name]
                    typecast = name_info.get('export_typecast', string_to_xmlnode)
                    list_item_name = name_info.get('list')

value = getattr(self, name)
                if value is None or isinstance(value, list) and len(value) == 0:
                    continue

if list_item_name:
                    # Element is list container, iterate over list items
                    element_node = libxml2.newNode(name)
                    root.addChild(element_node)
                    for item in value:
                        if isinstance(item, XmlSerialize):
                            child = item.get_xml_nodes(doc, list_item_name)
                            element_node.addChild(child)
                        else:
                            list_item_node = libxml2.newNode(list_item_name)
                            element_node.addChild(list_item_node)
                            child = typecast(doc, item)
                            list_item_node.addChild(child)
                else:
                    # Element is scalar
                    if isinstance(value, XmlSerialize):
                        child = value.get_xml_nodes(doc, name)
                        root.addChild(child)
                    else:
                        element_node = libxml2.newNode(name)
                        root.addChild(element_node)
                        child = typecast(doc, value)
                        element_node.addChild(child)
            except Exception as e:
                syslog.syslog(syslog.LOG_ERR, "%s.%s value=%s" % (self.__class__.__name__, name, value))

return root

def init_from_xml_node(self, xml_node, obj_name=None):
        elements, attributes = self.get_elements_and_attributes()
        self._init_defaults()

if obj_name is None:
            root = xml_node
        else:
            root = xml_get_child_element_by_name(xml_node, obj_name)
            if root is None:
                raise KeyError("xml child element (%s) not found in node %s" % (obj_name, xml_node.get_name()))

# Read the attributes in the xml node Cast the attribute value
        # to a Python type and store coerced value in the Python
        # object (self) which can then be accessed by "name"

for name, value in xml_attributes(root):
            if name not in attributes:
                log_debug("unknown attribute (%s) found in xml element (%s)" % (name, root.get_name()))
                continue
            name_info = self._xml_info[name]
            typecast = name_info.get('import_typecast', str)
            if isinstance(typecast, type) and issubclass(typecast, XmlSerialize):
                raise ValueError("Illegal use of substructure in attribute (%s)" % name)
            else:
                self.__setattr__(name, typecast(value))

for element_node in xml_child_elements_iter(root):
            name = element_node.get_name()
            if self._unstructured:
                # Unstructured data, store the string content of each
                # element in the Python object (self) which can then
                # be accessed by "name"
                value = element_node.getContent()
                self.__setattr__(name, value)
            else:
                # Recursively read the contents of each element.  Casting to a
                # Python types along the recursion path and store the final
                # Python value in the Python object (self) which can then be
                # accessed by "name"
                if name not in elements:
                    log_debug("unknown element (%s) found in xml element (%s)" % (name, root.get_name()))
                    continue
                name_info = self._xml_info[name]
                typecast = name_info.get('import_typecast', str)
                # Does this node have substructure?
                list_item_name = name_info.get('list')
                if list_item_name:
                    # Element is a list, recursively iterate over the elements children, e.g. list elements
                    attr = getattr(self, name, [])
                    list_nodes = xml_get_child_elements_by_name(element_node, list_item_name)
                    if isinstance(typecast, type) and issubclass(typecast, XmlSerialize):
                        for list_node in list_nodes:
                            attr.append(typecast(list_node))
                    else:
                        for list_node in list_nodes:
                            attr.append(typecast(list_node.getContent()))
                else:
                    if isinstance(typecast, type) and issubclass(typecast, XmlSerialize):
                        self.__setattr__(name, typecast(element_node))
                    else:
                        value = element_node.getContent()
                        self.__setattr__(name, typecast(value))

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