/usr/share/pyshared/gpgme/editutil.py is in python-gpgme 0.2-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 | # pygpgme - a Python wrapper for the gpgme library
# Copyright (C) 2006 James Henstridge
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
"""Utilities related to editing keys.
Currently only contains a utility function for editing the owner trust
value of a key in a keyring.
"""
__metaclass__ = type
__all__ = ['edit_trust']
import os
import StringIO
import gpgme
class _EditData:
"""Simple base class to wrap 'edit key' interactions"""
STATE_START = 0
STATE_ERROR = -1
def __init__(self):
self.state = self.STATE_START
self.transitions = {}
# a default state transition to try and quit the edit on error
self.addTransition(self.STATE_ERROR,
gpgme.STATUS_GET_LINE, 'keyedit.prompt',
self.STATE_ERROR, 'quit\n')
def addTransition(self, state, status, args, newstate, data):
self.transitions[state, status, args] = newstate, data
def do_edit(self, ctx, key):
output = StringIO.StringIO()
ctx.edit(key, self.callback, output)
def callback(self, status, args, fd):
if status in (gpgme.STATUS_EOF,
gpgme.STATUS_GOT_IT,
gpgme.STATUS_NEED_PASSPHRASE,
gpgme.STATUS_GOOD_PASSPHRASE,
gpgme.STATUS_BAD_PASSPHRASE,
gpgme.STATUS_USERID_HINT,
gpgme.STATUS_SIGEXPIRED,
gpgme.STATUS_KEYEXPIRED,
gpgme.STATUS_PROGRESS,
gpgme.STATUS_KEY_CREATED,
gpgme.STATUS_ALREADY_SIGNED):
return
#print 'S: %s (%d)' % (args, status)
if (self.state, status, args) in self.transitions:
self.state, data = self.transitions[self.state, status, args]
#print 'C: %r' % data
if data is not None:
os.write(fd, data)
else:
self.state = STATE_ERROR
raise gpgme.error(gpgme.ERR_SOURCE_UNKNOWN, gpgme.ERR_GENERAL)
class _EditTrust(_EditData):
# states
STATE_COMMAND = 1
STATE_VALUE = 2
STATE_CONFIRM = 3
STATE_QUIT = 4
def __init__(self, trust):
_EditData.__init__(self)
self.addTransition(self.STATE_START,
gpgme.STATUS_GET_LINE, 'keyedit.prompt',
self.STATE_COMMAND, 'trust\n')
self.addTransition(self.STATE_COMMAND,
gpgme.STATUS_GET_LINE, 'edit_ownertrust.value',
self.STATE_VALUE, '%d\n' % trust)
self.addTransition(self.STATE_VALUE,
gpgme.STATUS_GET_LINE, 'keyedit.prompt',
self.STATE_QUIT, 'quit\n')
self.addTransition(self.STATE_VALUE,
gpgme.STATUS_GET_BOOL, 'edit_ownertrust.set_ultimate.okay',
self.STATE_CONFIRM, 'Y\n')
self.addTransition(self.STATE_CONFIRM,
gpgme.STATUS_GET_LINE, 'keyedit.prompt',
self.STATE_QUIT, 'quit\n')
self.addTransition(self.STATE_QUIT,
gpgme.STATUS_GET_BOOL, 'keyedit.save.okay',
self.STATE_CONFIRM, 'Y\n')
class _EditSign(_EditData):
# states
STATE_UID = 1
STATE_COMMAND = 2
STATE_QUIT = 3
def __init__(self, index, command, expire, check):
_EditData.__init__(self)
self.addTransition(self.STATE_START,
gpgme.STATUS_GET_LINE, 'keyedit.prompt',
self.STATE_UID, 'uid %d\n' % index)
self.addTransition(self.STATE_UID,
gpgme.STATUS_GET_LINE, 'keyedit.prompt',
self.STATE_COMMAND, '%s\n' % command)
self.addTransition(self.STATE_COMMAND,
gpgme.STATUS_GET_BOOL, 'keyedit.sign_all.okay',
self.STATE_COMMAND, 'Y\n')
self.addTransition(self.STATE_COMMAND,
gpgme.STATUS_GET_LINE, 'sign_uid.expire',
self.STATE_COMMAND, '%s\n' % (expire and 'Y' or 'N'))
self.addTransition(self.STATE_COMMAND,
gpgme.STATUS_GET_LINE, 'sign_uid.class',
self.STATE_COMMAND, '%d\n' % check)
self.addTransition(self.STATE_COMMAND,
gpgme.STATUS_GET_BOOL, 'sign_uid.okay',
self.STATE_COMMAND, 'Y\n')
self.addTransition(self.STATE_COMMAND,
gpgme.STATUS_GET_LINE, 'keyedit.prompt',
self.STATE_QUIT, 'quit\n')
self.addTransition(self.STATE_QUIT,
gpgme.STATUS_GET_BOOL, 'keyedit.save.okay',
self.STATE_COMMAND, 'Y\n')
def edit_trust(ctx, key, trust):
if trust not in (gpgme.VALIDITY_UNDEFINED,
gpgme.VALIDITY_NEVER,
gpgme.VALIDITY_MARGINAL,
gpgme.VALIDITY_FULL,
gpgme.VALIDITY_ULTIMATE):
raise ValueError('Bad trust value %d' % trust)
statemachine = _EditTrust(trust)
statemachine.do_edit(ctx, key)
def edit_sign(ctx, key, index=0, local=False, norevoke=False,
expire=True, check=0):
"""Sign the given key.
index: the index of the user ID to sign, starting at 1. Sign all
user IDs if set to 0.
local: make a local signature
norevoke: make a non-revokable signature
command: the type of signature. One of sign, lsign, tsign or nrsign.
expire: whether the signature should expire with the key.
check: Amount of checking performed. One of:
0 - no answer
1 - no checking
2 - casual checking
3 - careful checking
"""
if index < 0 or index > len(key.uids):
raise ValueError('user ID index out of range')
command = 'sign'
if local:
command = 'l%s' % command
if norevoke:
command = 'nr%s' % command
if check not in [0, 1, 2, 3]:
raise ValueError('check must be one of 0, 1, 2, 3')
statemachine = _EditSign(index, command, expire, check)
statemachine.do_edit(ctx, key)
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