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#!/usr/bin/env python3
"""
Parses the output of gpg into a list suitable for the poezio
GPG plugin. Double-check the output and use at your own risk.
"""
import subprocess
import pprint
import re
import os
addr_re = re.compile(r'^uid\s+\[\s+full\s+\]\s.*<(.*@.*)>$')
id_re = re.compile(r'^pub\s+.*/(........) .*')
def extract_block(total):
"""
GPG output blocks are separated by newlines
"""
if '' in total:
index = total.index('')
else:
index = len(total)
block = total[:index]
total = total[index+1:]
return (block, total)
def parse_block(blocks, block):
"""
Keep the blocks with trusted keys
and extract addresses and UIDs
"""
uid = ''
addrs = []
blocksize = len(block)
for i, line in enumerate(reversed(block)):
if line.startswith('uid'):
match = addr_re.match(line)
if match:
addr = match.groups()[0]
if addr not in addrs:
addrs.append(addr)
else:
del block[blocksize-1-i]
elif line.startswith('pub'):
uid = id_re.match(line).groups()[0]
if addrs:
blocks[uid] = addrs
def output(blocks):
print('[keys]')
for uid in blocks:
for addr in blocks[uid]:
print('%s = %s' % (addr, uid))
def main():
os.putenv('LANG', 'en_US.UTF-8')
gpg_proc = subprocess.Popen(
[
"/usr/bin/gpg",
"--list-keys",
"--list-options",
"show-uid-validity"
],
stdout=subprocess.PIPE)
result, _ = gpg_proc.communicate()
result = result.decode().strip().splitlines()[2:]
blocks = {}
while result:
block, result = extract_block(result)
parse_block(blocks, block)
output(blocks)
if __name__ == '__main__':
main()
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