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
|
# Copyright 2019, David Wilson
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# 3. Neither the name of the copyright holder nor the names of its contributors
# may be used to endorse or promote products derived from this software without
# specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
# !mitogen: minify_safe
import logging
import re
import mitogen.core
import mitogen.parent
LOG = logging.getLogger(__name__)
password_incorrect_msg = 'doas password is incorrect'
password_required_msg = 'doas password is required'
class PasswordError(mitogen.core.StreamError):
pass
class Options(mitogen.parent.Options):
username = u'root'
password = None
doas_path = 'doas'
password_prompt = u'Password:'
incorrect_prompts = (
u'doas: authentication failed', # slicer69/doas
u'doas: Authorization failed', # openbsd/src
)
def __init__(self, username=None, password=None, doas_path=None,
password_prompt=None, incorrect_prompts=None, **kwargs):
super(Options, self).__init__(**kwargs)
if username is not None:
self.username = mitogen.core.to_text(username)
if password is not None:
self.password = mitogen.core.to_text(password)
if doas_path is not None:
self.doas_path = doas_path
if password_prompt is not None:
self.password_prompt = mitogen.core.to_text(password_prompt)
if incorrect_prompts is not None:
self.incorrect_prompts = [
mitogen.core.to_text(p)
for p in incorrect_prompts
]
class BootstrapProtocol(mitogen.parent.RegexProtocol):
password_sent = False
def setup_patterns(self, conn):
prompt_pattern = re.compile(
re.escape(conn.options.password_prompt).encode('utf-8'),
re.I
)
incorrect_prompt_pattern = re.compile(
u'|'.join(
re.escape(s)
for s in conn.options.incorrect_prompts
).encode('utf-8'),
re.I
)
self.PATTERNS = [
(incorrect_prompt_pattern, type(self)._on_incorrect_password),
]
self.PARTIAL_PATTERNS = [
(prompt_pattern, type(self)._on_password_prompt),
]
def _on_incorrect_password(self, line, match):
if self.password_sent:
self.stream.conn._fail_connection(
PasswordError(password_incorrect_msg)
)
def _on_password_prompt(self, line, match):
if self.stream.conn.options.password is None:
self.stream.conn._fail_connection(
PasswordError(password_required_msg)
)
return
if self.password_sent:
self.stream.conn._fail_connection(
PasswordError(password_incorrect_msg)
)
return
LOG.debug('sending password')
self.stream.transmit_side.write(
(self.stream.conn.options.password + '\n').encode('utf-8')
)
self.password_sent = True
class Connection(mitogen.parent.Connection):
options_class = Options
diag_protocol_class = BootstrapProtocol
create_child = staticmethod(mitogen.parent.hybrid_tty_create_child)
child_is_immediate_subprocess = False
def _get_name(self):
return u'doas.' + self.options.username
def stderr_stream_factory(self):
stream = super(Connection, self).stderr_stream_factory()
stream.protocol.setup_patterns(self)
return stream
def get_boot_command(self):
bits = [self.options.doas_path, '-u', self.options.username, '--']
return bits + super(Connection, self).get_boot_command()
|
