mirror of
https://github.com/nmap/nmap.git
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189 lines
7.1 KiB
Python
189 lines
7.1 KiB
Python
#!/usr/bin/env python3
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# ***********************IMPORTANT NMAP LICENSE TERMS************************
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# *
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# * The Nmap Security Scanner is (C) 1996-2025 Nmap Software LLC ("The Nmap
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# * Project"). Nmap is also a registered trademark of the Nmap Project.
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# *
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# * This program is distributed under the terms of the Nmap Public Source
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# * License (NPSL). The exact license text applying to a particular Nmap
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# * release or source code control revision is contained in the LICENSE
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# * file distributed with that version of Nmap or source code control
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# * revision. More Nmap copyright/legal information is available from
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# * https://nmap.org/book/man-legal.html, and further information on the
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# * NPSL license itself can be found at https://nmap.org/npsl/ . This
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# * header summarizes some key points from the Nmap license, but is no
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# * substitute for the actual license text.
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# *
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# * Nmap is generally free for end users to download and use themselves,
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# * including commercial use. It is available from https://nmap.org.
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# *
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# * The Nmap license generally prohibits companies from using and
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# * redistributing Nmap in commercial products, but we sell a special Nmap
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# * OEM Edition with a more permissive license and special features for
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# * this purpose. See https://nmap.org/oem/
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# *
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# * If you have received a written Nmap license agreement or contract
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# * stating terms other than these (such as an Nmap OEM license), you may
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# * choose to use and redistribute Nmap under those terms instead.
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# *
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# * The official Nmap Windows builds include the Npcap software
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# * (https://npcap.com) for packet capture and transmission. It is under
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# * separate license terms which forbid redistribution without special
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# * permission. So the official Nmap Windows builds may not be redistributed
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# * without special permission (such as an Nmap OEM license).
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# *
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# * Source is provided to this software because we believe users have a
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# * right to know exactly what a program is going to do before they run it.
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# * This also allows you to audit the software for security holes.
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# *
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# * Source code also allows you to port Nmap to new platforms, fix bugs, and
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# * add new features. You are highly encouraged to submit your changes as a
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# * Github PR or by email to the dev@nmap.org mailing list for possible
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# * incorporation into the main distribution. Unless you specify otherwise, it
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# * is understood that you are offering us very broad rights to use your
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# * submissions as described in the Nmap Public Source License Contributor
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# * Agreement. This is important because we fund the project by selling licenses
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# * with various terms, and also because the inability to relicense code has
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# * caused devastating problems for other Free Software projects (such as KDE
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# * and NASM).
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# *
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# * The free version of Nmap is distributed in the hope that it will be
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# * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Warranties,
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# * indemnification and commercial support are all available through the
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# * Npcap OEM program--see https://nmap.org/oem/
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# *
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# ***************************************************************************/
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import os
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import subprocess
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import sys
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import tempfile
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# Prevent loading PyXML
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import xml
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xml.__path__ = [x for x in xml.__path__ if "_xmlplus" not in x]
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import xml.sax
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from zenmapCore.Name import APP_NAME
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from zenmapCore.NmapParser import NmapParserSAX
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from zenmapCore.UmitConf import PathsConfig
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from zenmapCore.UmitLogging import log
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import zenmapCore.Paths
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# The [paths] configuration from zenmap.conf, used to get ndiff_command_path.
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paths_config = PathsConfig()
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class NdiffParseException(Exception):
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pass
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def get_path():
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"""Return a value for the PATH environment variable that is appropriate
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for the current platform. It will be the PATH from the environment plus
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possibly some platform-specific directories."""
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path_env = os.getenv("PATH")
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if path_env is None:
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search_paths = []
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else:
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search_paths = path_env.split(os.pathsep)
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for path in zenmapCore.Paths.get_extra_executable_search_paths():
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if path not in search_paths:
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search_paths.append(path)
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return os.pathsep.join(search_paths)
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class NdiffCommand(subprocess.Popen):
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def __init__(self, filename_a, filename_b, temporary_filenames=[]):
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self.temporary_filenames = temporary_filenames
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search_paths = get_path()
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env = dict(os.environ)
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env["PATH"] = search_paths
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if "Zenmap.app" in sys.executable:
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# These vars are set by the launcher, but they can interfere with
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# Ndiff because Ndiff is also a Python application. Without
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# removing these, Ndiff will attempt to run using the
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# bundled Python library, and may run into version or
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# architecture mismatches.
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if "PYTHONPATH" in env:
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del env["PYTHONPATH"]
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if "PYTHONHOME" in env:
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del env["PYTHONHOME"]
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command_list = [
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paths_config.ndiff_command_path,
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"--verbose",
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"--",
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filename_a,
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filename_b
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]
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self.stdout_file = tempfile.TemporaryFile(
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mode="r", encoding="utf-8",
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prefix=APP_NAME + "-ndiff-",
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suffix=".xml"
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)
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log.debug("Running command: %s" % repr(command_list))
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# shell argument explained in zenmapCore.NmapCommand.py
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subprocess.Popen.__init__(
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self,
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command_list,
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universal_newlines=True, encoding="utf-8",
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stdout=self.stdout_file,
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stderr=subprocess.PIPE,
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env=env,
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shell=(sys.platform == "win32")
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)
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def get_scan_diff(self):
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self.wait()
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self.stdout_file.seek(0)
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return self.stdout_file.read()
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def close(self):
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"""Clean up temporary files."""
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self.stdout_file.close()
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for filename in self.temporary_filenames:
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log.debug("Remove temporary diff file %s." % filename)
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os.remove(filename)
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self.temporary_filenames = []
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def kill(self):
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self.close()
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def ndiff(scan_a, scan_b):
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"""Run Ndiff on two scan results, which may be filenames or NmapParserSAX
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objects, and return a running NdiffCommand object."""
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temporary_filenames = []
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if isinstance(scan_a, NmapParserSAX):
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fd, filename_a = tempfile.mkstemp(
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prefix=APP_NAME + "-diff-",
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suffix=".xml"
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)
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temporary_filenames.append(filename_a)
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f = os.fdopen(fd, "w")
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scan_a.write_xml(f)
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f.close()
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else:
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filename_a = scan_a
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if isinstance(scan_b, NmapParserSAX):
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fd, filename_b = tempfile.mkstemp(
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prefix=APP_NAME + "-diff-",
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suffix=".xml"
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)
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temporary_filenames.append(filename_b)
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f = os.fdopen(fd, "w")
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scan_b.write_xml(f)
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f.close()
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else:
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filename_b = scan_b
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return NdiffCommand(filename_a, filename_b, temporary_filenames)
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