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waf/utils/verify-sig.py
2015-01-01 16:24:54 +01:00

57 lines
1.3 KiB
Python
Executable File

#! /usr/bin/env python
# encoding: ISO8859-1
# Thomas Nagy, 2014-2015
"""
A simple file for verifying signatures in signed waf files
This script is meant for Python >= 2.6 and the encoding is bytes - ISO8859-1
Distributing detached signatures is boring
"""
import sys, os, re, subprocess
if __name__ == '__main__':
try:
infile = sys.argv[1]
except IndexError:
infile = 'waf'
try:
outfile1 = sys.argv[2]
except IndexError:
outfile1 = infile + '-sig'
try:
outfile2 = sys.argv[3]
except IndexError:
outfile2 = outfile1 + '.asc'
f1 = open(outfile1, 'wb')
f2 = open(outfile2, 'wb')
f = open(infile, 'rb')
try:
txt = f.read()
lastline = txt.decode('ISO8859-1').splitlines()[-1] # just the last line
if not lastline.startswith('#-----BEGIN PGP SIGNATURE-----'):
print("ERROR: there is no signature to verify in %r :-/" % infile)
sys.exit(1)
sigtext = lastline.replace('\\n', '\n') # convert newlines
sigtext = sigtext[1:] # omit the '# character'
sigtext = sigtext.encode('ISO8859-1') # python3
f2.write(sigtext)
f1.write(txt[:-len(lastline) - 1]) # one newline character was eaten from splitlines()
finally:
f.close()
f1.close()
f2.close()
cmd = 'gpg --verify %s' % outfile2
print("-> %r" % cmd)
ret = subprocess.Popen(cmd, shell=True).wait()
sys.exit(ret)