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259 lines
13 KiB
Python
259 lines
13 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# ***********************IMPORTANT NMAP LICENSE TERMS************************
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# * *
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# * The Nmap Security Scanner is (C) 1996-2016 Insecure.Com LLC ("The Nmap *
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# * Project"). Nmap is also a registered trademark of the Nmap Project. *
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# * This program is free software; you may redistribute and/or modify it *
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# * under the terms of the GNU General Public License as published by the *
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# * Free Software Foundation; Version 2 ("GPL"), BUT ONLY WITH ALL OF THE *
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# * CLARIFICATIONS AND EXCEPTIONS DESCRIBED HEREIN. This guarantees your *
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# * right to use, modify, and redistribute this software under certain *
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# * conditions. If you wish to embed Nmap technology into proprietary *
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# * software, we sell alternative licenses (contact sales@nmap.com). *
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# * Dozens of software vendors already license Nmap technology such as *
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# * host discovery, port scanning, OS detection, version detection, and *
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# * the Nmap Scripting Engine. *
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# * *
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# * Note that the GPL places important restrictions on "derivative works", *
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# * yet it does not provide a detailed definition of that term. To avoid *
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# * misunderstandings, we interpret that term as broadly as copyright law *
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# * allows. For example, we consider an application to constitute a *
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# * derivative work for the purpose of this license if it does any of the *
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# * following with any software or content covered by this license *
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# * ("Covered Software"): *
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# * *
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# * o Integrates source code from Covered Software. *
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# * *
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# * o Reads or includes copyrighted data files, such as Nmap's nmap-os-db *
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# * or nmap-service-probes. *
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# * *
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# * o Is designed specifically to execute Covered Software and parse the *
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# * results (as opposed to typical shell or execution-menu apps, which will *
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# * execute anything you tell them to). *
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# * *
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# * o Includes Covered Software in a proprietary executable installer. The *
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# * installers produced by InstallShield are an example of this. Including *
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# * Nmap with other software in compressed or archival form does not *
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# * trigger this provision, provided appropriate open source decompression *
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# * or de-archiving software is widely available for no charge. For the *
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# * purposes of this license, an installer is considered to include Covered *
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# * Software even if it actually retrieves a copy of Covered Software from *
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# * another source during runtime (such as by downloading it from the *
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# * Internet). *
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# * *
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# * o Links (statically or dynamically) to a library which does any of the *
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# * above. *
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# * *
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# * o Executes a helper program, module, or script to do any of the above. *
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# * *
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# * This list is not exclusive, but is meant to clarify our interpretation *
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# * of derived works with some common examples. Other people may interpret *
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# * the plain GPL differently, so we consider this a special exception to *
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# * the GPL that we apply to Covered Software. Works which meet any of *
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# * these conditions must conform to all of the terms of this license, *
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# * particularly including the GPL Section 3 requirements of providing *
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# * source code and allowing free redistribution of the work as a whole. *
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# * *
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# * As another special exception to the GPL terms, the Nmap Project grants *
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# * permission to link the code of this program with any version of the *
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# * OpenSSL library which is distributed under a license identical to that *
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# * listed in the included docs/licenses/OpenSSL.txt file, and distribute *
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# * linked combinations including the two. *
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# * *
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# * The Nmap Project has permission to redistribute Npcap, a packet *
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# * capturing driver and library for the Microsoft Windows platform. *
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# * Npcap is a separate work with it's own license rather than this Nmap *
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# * license. Since the Npcap license does not permit redistribution *
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# * without special permission, our Nmap Windows binary packages which *
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# * contain Npcap may not be redistributed without special permission. *
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# * *
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# * Any redistribution of Covered Software, including any derived works, *
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# * must obey and carry forward all of the terms of this license, including *
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# * obeying all GPL rules and restrictions. For example, source code of *
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# * the whole work must be provided and free redistribution must be *
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# * allowed. All GPL references to "this License", are to be treated as *
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# * including the terms and conditions of this license text as well. *
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# * *
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# * Because this license imposes special exceptions to the GPL, Covered *
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# * Work may not be combined (even as part of a larger work) with plain GPL *
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# * software. The terms, conditions, and exceptions of this license must *
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# * be included as well. This license is incompatible with some other open *
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# * source licenses as well. In some cases we can relicense portions of *
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# * Nmap or grant special permissions to use it in other open source *
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# * software. Please contact fyodor@nmap.org with any such requests. *
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# * Similarly, we don't incorporate incompatible open source software into *
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# * Covered Software without special permission from the copyright holders. *
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# * *
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# * If you have any questions about the licensing restrictions on using *
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# * Nmap in other works, are happy to help. As mentioned above, we also *
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# * offer alternative license to integrate Nmap into proprietary *
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# * applications and appliances. These contracts have been sold to dozens *
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# * of software vendors, and generally include a perpetual license as well *
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# * as providing for priority support and updates. They also fund the *
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# * continued development of Nmap. Please email sales@nmap.com for further *
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# * information. *
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# * *
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# * If you have received a written license agreement or contract for *
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# * Covered Software stating terms other than these, you may choose to use *
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# * and redistribute Covered Software under those terms instead of these. *
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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, *
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# * and add new features. You are highly encouraged to send your changes *
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# * to the dev@nmap.org mailing list for possible incorporation into the *
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# * main distribution. By sending these changes to Fyodor or one of the *
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# * Insecure.Org development mailing lists, or checking them into the Nmap *
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# * source code repository, it is understood (unless you specify *
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# * otherwise) that you are offering the Nmap Project the unlimited, *
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# * non-exclusive right to reuse, modify, and relicense the code. Nmap *
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# * will always be available Open Source, but this is important because *
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# * the inability to relicense code has caused devastating problems for *
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# * other Free Software projects (such as KDE and NASM). We also *
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# * occasionally relicense the code to third parties as discussed above. *
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# * If you wish to specify special license conditions of your *
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# * contributions, just say so when you send them. *
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# * *
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# * This program is distributed in the hope that it will be useful, but *
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# * WITHOUT ANY WARRANTY; without even the implied warranty of *
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# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the Nmap *
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# * license file for more details (it's in a COPYING file included with *
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# * Nmap, and also available from https://svn.nmap.org/nmap/COPYING) *
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# * *
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# ***************************************************************************/
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import datetime
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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="rb",
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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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stdout=self.stdout_file,
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stderr=self.stdout_file,
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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, "wb")
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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, "wb")
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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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