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https://salsa.debian.org/gnuk-team/gnuk/gnuk.git
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129 lines
3.9 KiB
Python
129 lines
3.9 KiB
Python
"""
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gpg_agent.py - a library to connect gpg-agent
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Copyright (C) 2013, 2015 Free Software Initiative of Japan
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Author: NIIBE Yutaka <gniibe@fsij.org>
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This file is a part of Gnuk, a GnuPG USB Token implementation.
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Gnuk is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Gnuk is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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"""
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import platform, os, socket
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IS_WINDOWS=(platform.system() == 'Windows')
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BUFLEN=1024
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class gpg_agent(object):
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def __init__(self):
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if IS_WINDOWS:
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home = os.getenv("HOME")
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if not home:
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home = os.getenv("APPDATA")
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comm_port = os.path.join(home, "gnupg", "S.gpg-agent")
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#
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f = open(comm_port, "rb", 0)
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infostr = f.read().decode('UTF-8')
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f.close()
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#
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info = infostr.split('\n', 1)
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port = int(info[0])
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nonce = info[1]
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s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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s.connect(("localhost", port))
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s.send(nonce)
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else:
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infostr = os.getenv("GPG_AGENT_INFO")
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info = infostr.split(':', 2)
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path = info[0]
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s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
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s.connect(path)
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self.sock = s
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self.buf_remained = b""
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self.response = None
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def read_line(self):
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line = b""
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if self.buf_remained != b"":
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chunk = self.buf_remained
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else:
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chunk = self.sock.recv(BUFLEN)
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while True:
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pos = chunk.find(b'\n')
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if pos >= 0:
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self.buf_remained = chunk[pos+1:]
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line = line + chunk[0:pos]
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return line
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else:
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line = line + chunk
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chunk = self.sock.recv(BUFLEN)
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def get_response(self):
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r = self.response
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result = b""
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while True:
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i = r.find(b'%')
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if i < 0:
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result += r
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break
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hex_str = r[i+1:i+3].decode('UTF-8')
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result += r[0:i]
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if bytes == str:
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result += chr(int(hex_str,16))
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else:
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result += bytes.fromhex(hex_str)
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r = r[i+3:]
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return result
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def send_command(self, cmd):
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self.sock.send(cmd.encode('UTF-8'))
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self.response = b""
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while True:
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while True:
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l = self.read_line()
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if l[0] != b'#'[0]:
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break
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if l[0] == b'D'[0]:
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self.response += l[2:]
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elif l[0:2] == b'OK':
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return True
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elif l[0:3] == b'ERR':
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return False
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else: # XXX: S, INQUIRE, END
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return False
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def close(self):
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self.sock.send(b'BYE\n')
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bye = self.read_line()
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self.sock.close()
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return bye # "OK closing connection"
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# Test
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if __name__ == '__main__':
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g = gpg_agent()
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print(g.read_line().decode('UTF-8'))
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print(g.send_command("KEYINFO --list --data\n"))
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kl_str = g.get_response().decode('UTF-8')
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kl_str = kl_str[0:-1]
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kl = kl_str.split('\n')
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import re
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kl_o3 = [kg for kg in kl if re.search("OPENPGP\\.3", kg)]
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print(kl_o3)
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kg = kl_o3[0].split(' ')[0]
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print(g.send_command("READKEY %s\n" % kg))
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r = g.get_response()
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import binascii
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print(binascii.hexlify(r).decode('UTF-8'))
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print(g.close().decode('UTF-8'))
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