forked from paradoxxxzero/butterfly
-
Notifications
You must be signed in to change notification settings - Fork 1
/
butterfly.server.py
executable file
·392 lines (330 loc) · 13.9 KB
/
butterfly.server.py
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
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
#!/usr/bin/env python
# *-* coding: utf-8 *-*
# This file is part of butterfly
#
# butterfly Copyright(C) 2015-2017 Florian Mounier
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import tornado.options
import tornado.ioloop
import tornado.httpserver
try:
from tornado_systemd import SystemdHTTPServer as HTTPServer
except ImportError:
from tornado.httpserver import HTTPServer
import logging
import webbrowser
import uuid
import ssl
import getpass
import os
import shutil
import stat
import socket
import sys
tornado.options.define("debug", default=False, help="Debug mode")
tornado.options.define("more", default=False,
help="Debug mode with more verbosity")
tornado.options.define("unminified", default=False,
help="Use the unminified js (for development only)")
tornado.options.define("host", default='localhost', help="Server host")
tornado.options.define("port", default=57575, type=int, help="Server port")
tornado.options.define("keepalive_interval", default=30, type=int,
help="Interval between ping packets sent from server "
"to client (in seconds)")
tornado.options.define("one_shot", default=False,
help="Run a one-shot instance. Quit at term close")
tornado.options.define("shell", help="Shell to execute at login")
tornado.options.define("motd", default='motd', help="Path to the motd file.")
tornado.options.define("cmd",
help="Command to run instead of shell, f.i.: 'ls -l'")
tornado.options.define("unsecure", default=False,
help="Don't use ssl not recommended")
tornado.options.define("i_hereby_declare_i_dont_want_any_security_whatsoever",
default=False,
help="Remove all security and warnings. There are some "
"use cases for that. Use this if you really know what "
"you are doing.")
tornado.options.define("login", default=False,
help="Use login screen at start")
tornado.options.define("pam_profile", default="", type=str,
help="When --login=True provided and running as ROOT, "
"use PAM with the specified PAM profile for "
"authentication and then execute the user's default "
"shell. Will override --shell.")
tornado.options.define("force_unicode_width",
default=False,
help="Force all unicode characters to the same width."
"Useful for avoiding layout mess.")
tornado.options.define("ssl_version", default=None,
help="SSL protocol version")
tornado.options.define("generate_certs", default=False,
help="Generate butterfly certificates")
tornado.options.define("generate_current_user_pkcs", default=False,
help="Generate current user pfx for client "
"authentication")
tornado.options.define("generate_user_pkcs", default='',
help="Generate user pfx for client authentication "
"(Must be root to create for another user)")
tornado.options.define("uri_root_path", default='',
help="Sets the servier root path: "
"example.com/<uri_root_path>/static/")
tornado.options.define("username", default=None,
help="The username to use for shell")
tornado.options.define("client_cert_required", default=True,
help="Require client to present a certificate")
if os.getuid() == 0:
ev = os.getenv('XDG_CONFIG_DIRS', '/etc')
else:
ev = os.getenv(
'XDG_CONFIG_HOME', os.path.join(
os.getenv('HOME', os.path.expanduser('~')),
'.config'))
butterfly_dir = os.path.join(ev, 'butterfly')
conf_file = os.path.join(butterfly_dir, 'butterfly.conf')
ssl_dir = os.path.join(butterfly_dir, 'ssl')
tornado.options.define("conf", default=conf_file,
help="Butterfly configuration file. "
"Contains the same options as command line.")
tornado.options.define("ssl_dir", default=ssl_dir,
help="Force SSL directory location")
# Do it once to get the conf path
tornado.options.parse_command_line()
if os.path.exists(tornado.options.options.conf):
tornado.options.parse_config_file(tornado.options.options.conf)
# Do it again to overwrite conf with args
tornado.options.parse_command_line()
# For next time, create them a conf file from template.
# Need to do this after parsing options so we do not trigger
# code import for butterfly module, in case that code is
# dependent on the set of parsed options.
if not os.path.exists(conf_file):
try:
import butterfly
shutil.copy(
os.path.join(
os.path.abspath(os.path.dirname(butterfly.__file__)),
'butterfly.conf.default'), conf_file)
print('butterfly.conf installed in %s' % conf_file)
except:
pass
options = tornado.options.options
for logger in ('tornado.access', 'tornado.application',
'tornado.general', 'butterfly'):
level = logging.WARNING
if options.debug:
level = logging.INFO
if options.more:
level = logging.DEBUG
logging.getLogger(logger).setLevel(level)
log = logging.getLogger('butterfly')
host = options.host
port = options.port
if options.i_hereby_declare_i_dont_want_any_security_whatsoever:
options.unsecure = True
if not os.path.exists(options.ssl_dir):
os.makedirs(options.ssl_dir)
def to_abs(file):
return os.path.join(options.ssl_dir, file)
ca, ca_key, cert, cert_key, pkcs12 = map(to_abs, [
'butterfly_ca.crt', 'butterfly_ca.key',
'butterfly_%s.crt', 'butterfly_%s.key',
'%s.p12'])
def fill_fields(subject):
subject.C = 'WW'
subject.O = 'Butterfly'
subject.OU = 'Butterfly Terminal'
subject.ST = 'World Wide'
subject.L = 'Terminal'
def write(file, content):
with open(file, 'wb') as fd:
fd.write(content)
print('Writing %s' % file)
def read(file):
print('Reading %s' % file)
with open(file, 'rb') as fd:
return fd.read()
def b(s):
return s.encode('utf-8')
if options.generate_certs:
from OpenSSL import crypto
print('Generating certificates for %s (change it with --host)\n' % host)
if not os.path.exists(ca) and not os.path.exists(ca_key):
print('Root certificate not found, generating it')
ca_pk = crypto.PKey()
ca_pk.generate_key(crypto.TYPE_RSA, 2048)
ca_cert = crypto.X509()
ca_cert.set_version(2)
ca_cert.get_subject().CN = 'Butterfly CA on %s' % socket.gethostname()
fill_fields(ca_cert.get_subject())
ca_cert.set_serial_number(uuid.uuid4().int)
ca_cert.gmtime_adj_notBefore(0) # From now
ca_cert.gmtime_adj_notAfter(315360000) # to 10y
ca_cert.set_issuer(ca_cert.get_subject()) # Self signed
ca_cert.set_pubkey(ca_pk)
ca_cert.add_extensions([
crypto.X509Extension(
b('basicConstraints'), True, b('CA:TRUE, pathlen:0')),
crypto.X509Extension(
b('keyUsage'), True, b('keyCertSign, cRLSign')),
crypto.X509Extension(
b('subjectKeyIdentifier'), False, b('hash'), subject=ca_cert),
])
ca_cert.add_extensions([
crypto.X509Extension(
b('authorityKeyIdentifier'), False,
b('issuer:always, keyid:always'),
issuer=ca_cert, subject=ca_cert
)
])
ca_cert.sign(ca_pk, 'sha512')
write(ca, crypto.dump_certificate(crypto.FILETYPE_PEM, ca_cert))
write(ca_key, crypto.dump_privatekey(crypto.FILETYPE_PEM, ca_pk))
os.chmod(ca_key, stat.S_IRUSR | stat.S_IWUSR) # 0o600 perms
else:
print('Root certificate found, using it')
ca_cert = crypto.load_certificate(crypto.FILETYPE_PEM, read(ca))
ca_pk = crypto.load_privatekey(crypto.FILETYPE_PEM, read(ca_key))
server_pk = crypto.PKey()
server_pk.generate_key(crypto.TYPE_RSA, 2048)
server_cert = crypto.X509()
server_cert.set_version(2)
server_cert.get_subject().CN = host
server_cert.add_extensions([
crypto.X509Extension(
b('basicConstraints'), False, b('CA:FALSE')),
crypto.X509Extension(
b('subjectKeyIdentifier'), False, b('hash'), subject=server_cert),
crypto.X509Extension(
b('subjectAltName'), False, b('DNS:%s' % host)),
])
server_cert.add_extensions([
crypto.X509Extension(
b('authorityKeyIdentifier'), False,
b('issuer:always, keyid:always'),
issuer=ca_cert, subject=ca_cert
)
])
fill_fields(server_cert.get_subject())
server_cert.set_serial_number(uuid.uuid4().int)
server_cert.gmtime_adj_notBefore(0) # From now
server_cert.gmtime_adj_notAfter(315360000) # to 10y
server_cert.set_issuer(ca_cert.get_subject()) # Signed by ca
server_cert.set_pubkey(server_pk)
server_cert.sign(ca_pk, 'sha512')
write(cert % host, crypto.dump_certificate(
crypto.FILETYPE_PEM, server_cert))
write(cert_key % host, crypto.dump_privatekey(
crypto.FILETYPE_PEM, server_pk))
os.chmod(cert_key % host, stat.S_IRUSR | stat.S_IWUSR) # 0o600 perms
print('\nNow you can run --generate-user-pkcs=user '
'to generate user certificate.')
sys.exit(0)
if (options.generate_current_user_pkcs or
options.generate_user_pkcs):
from butterfly import utils
try:
current_user = utils.User()
except Exception:
current_user = None
from OpenSSL import crypto
if not all(map(os.path.exists, [ca, ca_key])):
print('Please generate certificates using --generate-certs before')
sys.exit(1)
if options.generate_current_user_pkcs:
user = current_user.name
else:
user = options.generate_user_pkcs
if user != current_user.name and current_user.uid != 0:
print('Cannot create certificate for another user with '
'current privileges.')
sys.exit(1)
ca_cert = crypto.load_certificate(crypto.FILETYPE_PEM, read(ca))
ca_pk = crypto.load_privatekey(crypto.FILETYPE_PEM, read(ca_key))
client_pk = crypto.PKey()
client_pk.generate_key(crypto.TYPE_RSA, 2048)
client_cert = crypto.X509()
client_cert.set_version(2)
client_cert.get_subject().CN = user
fill_fields(client_cert.get_subject())
client_cert.set_serial_number(uuid.uuid4().int)
client_cert.gmtime_adj_notBefore(0) # From now
client_cert.gmtime_adj_notAfter(315360000) # to 10y
client_cert.set_issuer(ca_cert.get_subject()) # Signed by ca
client_cert.set_pubkey(client_pk)
client_cert.sign(client_pk, 'sha512')
client_cert.sign(ca_pk, 'sha512')
pfx = crypto.PKCS12()
pfx.set_certificate(client_cert)
pfx.set_privatekey(client_pk)
pfx.set_ca_certificates([ca_cert])
pfx.set_friendlyname(('%s cert for butterfly' % user).encode('utf-8'))
while True:
password = getpass.getpass('\nPKCS12 Password (can be blank): ')
password2 = getpass.getpass('Verify Password (can be blank): ')
if password == password2:
break
print('Passwords do not match.')
print('')
write(pkcs12 % user, pfx.export(password.encode('utf-8')))
os.chmod(pkcs12 % user, stat.S_IRUSR | stat.S_IWUSR) # 0o600 perms
sys.exit(0)
if options.unsecure:
ssl_opts = None
else:
if not all(map(os.path.exists, [cert % host, cert_key % host, ca])):
print("Unable to find butterfly certificate for host %s" % host)
print(cert % host)
print(cert_key % host)
print(ca)
print("Can't run butterfly without certificate.\n")
print("Either generate them using --generate-certs --host=host "
"or run as --unsecure (NOT RECOMMENDED)\n")
print("For more information go to http://paradoxxxzero.github.io/"
"2014/03/21/butterfly-with-ssl-auth.html\n")
sys.exit(1)
ssl_opts = {
'certfile': cert % host,
'keyfile': cert_key % host,
'ca_certs': ca,
}
if options.client_cert_required:
ssl_opts['cert_reqs'] = ssl.CERT_REQUIRED
if options.ssl_version is not None:
if not hasattr(
ssl, 'PROTOCOL_%s' % options.ssl_version):
print(
"Unknown SSL protocol %s" %
options.ssl_version)
sys.exit(1)
ssl_opts['ssl_version'] = getattr(
ssl, 'PROTOCOL_%s' % options.ssl_version)
from butterfly import application
application.butterfly_dir = butterfly_dir
log.info('Starting server')
http_server = HTTPServer(application, ssl_options=ssl_opts)
http_server.listen(port, address=host)
if getattr(http_server, 'systemd', False):
os.environ.pop('LISTEN_PID')
os.environ.pop('LISTEN_FDS')
log.info('Starting loop')
ioloop = tornado.ioloop.IOLoop.instance()
if port == 0:
port = list(http_server._sockets.values())[0].getsockname()[1]
url = "http%s://%s:%d/%s" % (
"s" if not options.unsecure else "", host, port,
(options.uri_root_path.strip('/') + '/') if options.uri_root_path else ''
)
if not options.one_shot or not webbrowser.open(url):
log.warn('Butterfly is ready, open your browser to: %s' % url)
ioloop.start()