summaryrefslogtreecommitdiff
path: root/src/conf_mode/ipoe_server.py
blob: 478fc139ea651c72d69b29fd11a213851af323ef (plain)
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
#!/usr/bin/env python3
#
# Copyright (C) 2018 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
# published by the Free Software Foundation.
#
# 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 sys
import os
import re
import time
import socket
import subprocess
import jinja2
import syslog as sl

from vyos.config import Config
from vyos import ConfigError

ipoe_cnf_dir = r'/etc/accel-ppp/ipoe'
ipoe_cnf = ipoe_cnf_dir + r'/ipoe.config'

pidfile = r'/var/run/accel_ipoe.pid'
cmd_port = r'2002'

chap_secrets = ipoe_cnf_dir + '/chap-secrets'
## accel-pppd -d -c /etc/accel-ppp/pppoe/pppoe.config -p /var/run/accel_pppoe.pid

ipoe_config = '''
### generated by ipoe.py ### 
[modules]
log_syslog
ippool
ipoe
shaper
{% if auth['mech'] == 'radius' %}
radius
{% endif -%}
{% if auth['mech'] == 'local' %}
chap-secrets
{% endif %}

[core]
thread-count={{thread_cnt}}

[log]
syslog=accel-ipoe,daemon
copy=1
level=5

[ipoe]
verbose=1
{% for intfc in interfaces %}
interface={{intfc}},\
shared={{interfaces[intfc]['shared']}},\
mode={{interfaces[intfc]['mode']}},\
ifcfg={{interfaces[intfc]['ifcfg']}},\
range={{interfaces[intfc]['range']}},\
start={{interfaces[intfc]['sess_start']}}
{% endfor %}
{% if auth['mech'] == 'noauth' %}
noauth=1
{% endif %}
{% if auth['mech'] == 'local' %}
username=ifname
password=csid
{% endif %}

{% if (dns['server1']) or (dns['server2']) %}
[dns]
{% if dns['server1'] %}
dns1={{dns['server1']}}
{% endif -%}
{% if dns['server2'] %}
dns2={{dns['server2']}}
{% endif -%}
{% endif -%}

{% if auth['mech'] == 'local' %}
[chap-secrets]
chap-secrets=/etc/accel-ppp/ipoe/chap-secrets 
{% endif %}

{% if auth['mech'] == 'radius' %}
[radius]
verbose=1
{% for srv in auth['radius'] %}
server={{srv}},{{auth['radius'][srv]['secret']}},\
req-limit={{auth['radius'][srv]['req-limit']}},\
fail-time={{auth['radius'][srv]['fail-time']}}
{% endfor %}
{% if auth['radsettings']['dae-server']['ip-address'] %}
dae-server={{auth['radsettings']['dae-server']['ip-address']}}:\
{{auth['radsettings']['dae-server']['port']}},\
{{auth['radsettings']['dae-server']['secret']}}
{% endif -%}
{% if auth['radsettings']['acct-timeout'] %}
acct-timeout={{auth['radsettings']['acct-timeout']}}
{% endif -%}
{% if auth['radsettings']['max-try'] %}
max-try={{auth['radsettings']['max-try']}}
{% endif -%}
{% if auth['radsettings']['timeout'] %}
timeout={{auth['radsettings']['timeout']}}
{% endif -%}
{% if auth['radsettings']['nas-ip-address'] %}
nas-ip-address={{auth['radsettings']['nas-ip-address']}}
{% endif -%}
{% if auth['radsettings']['nas-identifier'] %}
nas-identifier={{auth['radsettings']['nas-identifier']}}
{% endif -%}
{% endif %}

[cli]
tcp=127.0.0.1:2002
'''

### pppoe chap secrets
chap_secrets_conf = '''
# username  server  password  acceptable local IP addresses   shaper
{% for aifc in auth['auth_if'] %}
{% for mac in auth['auth_if'][aifc] %}
{% if (auth['auth_if'][aifc][mac]['up']) and (auth['auth_if'][aifc][mac]['down']) %}
{{aifc}}\t*\t{{mac.lower()}}\t*\t{{auth['auth_if'][aifc][mac]['down']}}/{{auth['auth_if'][aifc][mac]['up']}}
{% else %}
{{aifc}}\t*\t{{mac.lower()}}\t*
{% endif %}
{% endfor %}
{% endfor %}
'''

##### Inline functions start ####
### config path creation
if not os.path.exists(ipoe_cnf_dir):
  os.makedirs(ipoe_cnf_dir)
  sl.syslog(sl.LOG_NOTICE, ipoe_cnf_dir + " created")

def get_cpu():
  cpu_cnt = 1
  if os.cpu_count() == 1:
    cpu_cnt = 1
  else:
    cpu_cnt = int(os.cpu_count()/2)
  return cpu_cnt

def chk_con():
  cnt = 0
  s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
  while True:
    try:
      s.connect(("127.0.0.1", int(cmd_port)))
      break
    except ConnectionRefusedError:
      time.sleep(0.5)
      cnt +=1
      if cnt == 100:
        raise("failed to start pppoe server")
        break

def accel_cmd(cmd=''):
  if not cmd:
    return None
  try:
    ret = subprocess.check_output(['/usr/bin/accel-cmd', '-p', cmd_port, cmd]).decode().strip()
    return ret
  except:
    return 1

### chap_secrets file if auth mode local
def gen_chap_secrets(c):
  tmpl = jinja2.Template(chap_secrets_conf, trim_blocks=True)
  chap_secrets_txt = tmpl.render(c)
  old_umask = os.umask(0o077)
  open(chap_secrets,'w').write(chap_secrets_txt)
  os.umask(old_umask)
  sl.syslog(sl.LOG_NOTICE, chap_secrets + ' written')

##### Inline functions end ####

def get_config():
  c = Config()
  if not c.exists('service ipoe-server'):
    return None

  config_data = {}

  c.set_level('service ipoe-server')
  config_data['interfaces'] = {}
  for intfc in c.list_nodes('interface'):
    config_data['interfaces'][intfc] = {
      'mode'        : 'L2',
      'shared'      : '1',
      'sess_start'  : 'dhcpv4',  ### may need a conifg option, can be dhcpv4 or up for unclassified pkts
      'range'       : None,
      'ifcfg'       : '1'
    }
    config_data['dns'] = {
      'server1'     : None,
      'server2'     : None
    }
    config_data['auth'] = {
      'auth_if'       : {},
      'mech'          : 'noauth',
      'radius'        : {},
      'radsettings'   : {
        'dae-server'  : {}
      }
    }

    if c.exists('interface ' + intfc + ' network-mode'):
      config_data['interfaces'][intfc]['mode'] = c.return_value('interface ' + intfc + ' network-mode')
    if c.return_value('interface ' + intfc + ' network') == 'vlan':
      config_data['interfaces'][intfc]['shared'] = '0'
    if c.exists('interface ' + intfc + ' client-subnet'):
      config_data['interfaces'][intfc]['range'] = c.return_value('interface ' + intfc + ' client-subnet')
    if c.exists('dns-server server-1'):
      config_data['dns']['server1'] = c.return_value('dns-server server-1')
    if c.exists('dns-server server-2'):
      config_data['dns']['server2'] = c.return_value('dns-server server-2')
    if not c.exists('authentication mode noauth'):
      config_data['auth']['mech'] = c.return_value('authentication mode')
    if c.exists('authentication mode local'):
      for auth_int in c.list_nodes('authentication interface'):
        for mac in c.list_nodes('authentication interface ' + auth_int + ' mac-address'):
          config_data['auth']['auth_if'][auth_int] = {}
          if c.exists('authentication interface ' + auth_int + ' mac-address ' + mac + ' rate-limit'):
            config_data['auth']['auth_if'][auth_int][mac] = {}
            config_data['auth']['auth_if'][auth_int][mac]['up'] = c.return_value('authentication interface ' + auth_int + ' mac-address ' + mac + ' rate-limit upload') 
            config_data['auth']['auth_if'][auth_int][mac]['down'] = c.return_value('authentication interface ' + auth_int + ' mac-address ' + mac + ' rate-limit download')
          else:
            config_data['auth']['auth_if'][auth_int][mac] = {}
            config_data['auth']['auth_if'][auth_int][mac]['up'] = None
            config_data['auth']['auth_if'][auth_int][mac]['down'] = None
    if c.exists('authentication mode radius'):
      for rsrv in c.list_nodes('authentication radius-server'):
        config_data['auth']['radius'][rsrv] = {}
        if c.exists('authentication radius-server ' + rsrv + ' secret'):
          config_data['auth']['radius'][rsrv]['secret'] = c.return_value('authentication radius-server ' + rsrv + ' secret')
        else:
          config_data['auth']['radius'][rsrv]['secret'] = None
        if c.exists('authentication radius-server ' + rsrv + ' fail-time'):
          config_data['auth']['radius'][rsrv]['fail-time'] = c.return_value('authentication radius-server ' + rsrv + ' fail-time')
        else:
          config_data['auth']['radius'][rsrv]['fail-time'] = '0'
        if c.exists('authentication radius-server ' + rsrv + ' req-limit'):
          config_data['auth']['radius'][rsrv]['req-limit'] = c.return_value('authentication radius-server ' + rsrv + ' req-limit')
        else:
          config_data['auth']['radius'][rsrv]['req-limit'] = '0'
      if c.exists('authentication radius-settings'):
        if c.exists('authentication radius-settings timeout'):
          config_data['auth']['radsettings']['timeout'] = c.return_value('authentication radius-settings timeout')
        if c.exists('authentication radius-settings nas-ip-address'):
           config_data['auth']['radsettings']['nas-ip-address'] = c.return_value('authentication radius-settings nas-ip-address')
        if c.exists('authentication radius-settings nas-identifier'):
          config_data['auth']['radsettings']['nas-identifier'] = c.return_value('authentication radius-settings nas-identifier')
        if c.exists('authentication radius-settings max-try'):
          config_data['auth']['radsettings']['max-try'] = c.return_value('authentication radius-settings max-try')
        if c.exists('authentication radius-settings acct-timeout'):
          config_data['auth']['radsettings']['acct-timeout'] = c.return_value('authentication radius-settings acct-timeout')
        if c.exists('authentication radius-settings dae-server ip-address'):
          config_data['auth']['radsettings']['dae-server']['ip-address'] = c.return_value('authentication radius-settings dae-server ip-address')
        if c.exists('authentication radius-settings dae-server port'):
          config_data['auth']['radsettings']['dae-server']['port'] = c.return_value('authentication radius-settings dae-server port')
        if c.exists('authentication radius-settings dae-server secret'):
           config_data['auth']['radsettings']['dae-server']['secret'] = c.return_value('authentication radius-settings dae-server secret')
  
  return config_data

def generate(c):
  if c == None or not c:
    return None
  
  c['thread_cnt'] = get_cpu()

  if c['auth']['mech'] == 'local':
    gen_chap_secrets(c)

  tmpl = jinja2.Template(ipoe_config, trim_blocks=True)
  config_text = tmpl.render(c)

  open(ipoe_cnf,'w').write(config_text)
  return c

def verify(c):
  if c == None or not c:
    return None

  for intfc in c['interfaces']:
    if not c['interfaces'][intfc]['range']:
      raise ConfigError("service ipoe-server interface " + intfc + " client-subnet needs a value") 

  if c['auth']['mech'] == 'radius':
    if not c['auth']['radius']:
      raise ConfigError("service ipoe-server authentication radius-server requires a value for authentication mode radius")
    else:
      for radsrv in c['auth']['radius']:
        if not c['auth']['radius'][radsrv]['secret']:
          raise ConfigError("service ipoe-server authentication radius-server " + radsrv + " secret requires a value")

  if c['auth']['radsettings']['dae-server']:
    try:
      if c['auth']['radsettings']['dae-server']['ip-address']:
        pass
    except:
      raise ConfigError("service ipoe-server authentication radius-settings dae-server ip-address value required") 
    try:
      if c['auth']['radsettings']['dae-server']['secret']:
        pass
    except:
      raise ConfigError("service ipoe-server authentication radius-settings dae-server secret value required")
    try:
      if c['auth']['radsettings']['dae-server']['port']:
        pass
    except:
      raise ConfigError("service ipoe-server authentication radius-settings dae-server port value required")


  return c

def apply(c):
  if c == None:
    if os.path.exists(pidfile):
      accel_cmd('shutdown hard')
      if os.path.exists(pidfile):
        os.remove(pidfile)
    return None

  if not os.path.exists(pidfile):
    ret = subprocess.call(['/usr/sbin/accel-pppd', '-c', ipoe_cnf, '-p', pidfile, '-d'])
    chk_con()
    if ret !=0 and os.path.exists(pidfile):
      os.remove(pidfile)
      raise ConfigError('accel-pppd failed to start')
  else:
    accel_cmd('restart')
    sl.syslog(sl.LOG_NOTICE, "reloading config via daemon restart")

if __name__ == '__main__':
  try:
    c = get_config()
    verify(c)
    generate(c)
    apply(c)
  except ConfigError as e:
    print(e)
    sys.exit(1)