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# -*- coding: utf-8 -*- |
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# Copyright (C) 2018 Greenbone Networks GmbH |
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# |
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# SPDX-License-Identifier: GPL-3.0-or-later |
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# |
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# This program is free software: you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation, either version 3 of the License, or |
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# (at your option) any later version. |
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# |
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# This program is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with this program. If not, see <http://www.gnu.org/licenses/>. |
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import defusedxml.lxml as secET |
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from defusedxml import DefusedXmlException |
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from lxml import etree |
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from gvm.errors import GvmError |
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class XmlCommandElement: |
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def __init__(self, element): |
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self._element = element |
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def add_element(self, name, text=None, attrs=None): |
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node = etree.SubElement(self._element, name, attrib=attrs) |
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node.text = text |
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return XmlCommandElement(node) |
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def set_attribute(self, name, value): |
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self._element.set(name, value) |
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def set_attributes(self, attrs): |
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"""Set several attributes at once. |
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Arguments: |
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attrs (dict): Attributes to be set on the element |
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""" |
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for key, value in attrs.items(): |
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self._element.set(key, value) |
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def append_xml_str(self, xml_text): |
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"""Append a xml element in string format.""" |
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node = secET.fromstring(xml_text) |
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self._element.append(node) |
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def to_string(self): |
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return etree.tostring(self._element).decode('utf-8') |
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def __str__(self): |
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return self.to_string() |
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class XmlCommand(XmlCommandElement): |
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def __init__(self, name): |
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super().__init__(etree.Element(name)) |
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def pretty_print(xml): |
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"""Prints beautiful XML-Code |
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This function gets a string containing the xml, an object of |
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list<lxml.etree._Element> or directly a lxml element. |
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Print it with good readable format. |
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Arguments: |
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xml (str, list or lxml.etree.Element): xml as string, |
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List<lxml.etree.Element> or directly a lxml element |
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""" |
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if isinstance(xml, list): |
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for item in xml: |
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if etree.iselement(item): |
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print(etree.tostring(item, pretty_print=True).decode('utf-8')) |
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else: |
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print(item) |
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elif etree.iselement(xml): |
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print(etree.tostring(xml, pretty_print=True).decode('utf-8')) |
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elif isinstance(xml, str): |
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tree = secET.fromstring(xml) |
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print(etree.tostring(tree, pretty_print=True).decode('utf-8')) |
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def validate_xml_string(xml_string): |
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"""Checks if the passed string contains valid XML |
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Raises a GvmError if the XML is invalid. Otherwise the function just |
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returns. |
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Raises: |
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GvmError: The xml string did contain invalid XML |
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""" |
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try: |
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secET.fromstring(xml_string) |
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except (DefusedXmlException, etree.LxmlError) as e: |
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raise GvmError('Invalid XML', e) from e |
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greenbone /
python-gvm
