## This file is part of Scapy
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## See http://www.secdev.org/projects/scapy for more informations
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## Copyright (C) Philippe Biondi <phil@secdev.org>
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## This program is published under a GPLv2 license
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"""
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Scapy: create, send, sniff, dissect and manipulate network packets.
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Usable either from an interactive console or as a Python library.
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http://www.secdev.org/projects/scapy
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"""
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import os
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import re
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import subprocess
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_SCAPY_PKG_DIR = os.path.dirname(__file__)
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def _version_from_git_describe():
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"""
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Read the version from ``git describe``. It returns the latest tag with an
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optional suffix if the current directory is not exactly on the tag.
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Example::
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$ git describe --always
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v2.3.2-346-g164a52c075c8
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The tag prefix (``v``) and the git commit sha1 (``-g164a52c075c8``) are
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removed if present.
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If the current directory is not exactly on the tag, a ``.devN`` suffix is
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appended where N is the number of commits made after the last tag.
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Example::
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>>> _version_from_git_describe()
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'2.3.2.dev346'
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"""
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if not os.path.isdir(os.path.join(os.path.dirname(_SCAPY_PKG_DIR), '.git')):
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raise ValueError('not in scapy git repo')
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p = subprocess.Popen(['git', 'describe', '--always'], cwd=_SCAPY_PKG_DIR,
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stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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out, err = p.communicate()
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if p.returncode == 0:
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tag = out.decode().strip()
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match = re.match('^v?(.+?)-(\\d+)-g[a-f0-9]+$', tag)
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if match:
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# remove the 'v' prefix and add a '.devN' suffix
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return '%s.dev%s' % (match.group(1), match.group(2))
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else:
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# just remove the 'v' prefix
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return re.sub('^v', '', tag)
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else:
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raise subprocess.CalledProcessError(p.returncode, err)
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def _version():
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version_file = os.path.join(_SCAPY_PKG_DIR, 'VERSION')
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try:
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tag = _version_from_git_describe()
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# successfully read the tag from git, write it in VERSION for
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# installation and/or archive generation.
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with open(version_file, 'w') as f:
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f.write(tag)
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return tag
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except:
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# failed to read the tag from git, try to read it from a VERSION file
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try:
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with open(version_file, 'r') as f:
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tag = f.read()
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return tag
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except:
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# Rely on git archive "export-subst" git attribute.
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# See 'man gitattributes' for more details.
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git_archive_id = '$Format:%h %d$'
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sha1 = git_archive_id.strip().split()[0]
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match = re.search('tag:(\\S+)', git_archive_id)
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if match:
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return "git-archive.dev" + match.group(1)
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elif sha1:
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return "git-archive.dev" + sha1
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else:
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return 'unknown.version'
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VERSION = _version()
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if __name__ == "__main__":
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from scapy.main import interact
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interact()
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