source: genesis/tools/gformat.py@ 10366

Last change on this file since 10366 was 10366, checked in by rick, 13 years ago

DHCLIENT configuration done the proper way...

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1#!/usr/bin/env python
2#
3# vim:ts=2:et:sw=2:ai
4# Wireless Leiden configuration generator, based on yaml files'
5#
6# XXX: This should be rewritten to make use of the ipaddr.py library.
7#
8# Sample apache configuration (mind the AcceptPathInfo!)
9# ScriptAlias /wleiden/config /usr/local/www/genesis/tools/gformat.py
10# <Directory /usr/local/www/genesis>
11# Allow from all
12# AcceptPathInfo On
13# </Directory>
14#
15# Rick van der Zwet <info@rickvanderzwet.nl>
16#
17
18# Hack to make the script directory is also threated as a module search path.
19import sys
20import os
21import re
22sys.path.append(os.path.dirname(__file__))
23
24import cgi
25import cgitb
26import copy
27import glob
28import socket
29import string
30import subprocess
31import time
32import rdnap
33from pprint import pprint
34from collections import defaultdict
35try:
36 import yaml
37except ImportError, e:
38 print e
39 print "[ERROR] Please install the python-yaml or devel/py-yaml package"
40 exit(1)
41
42try:
43 from yaml import CLoader as Loader
44 from yaml import CDumper as Dumper
45except ImportError:
46 from yaml import Loader, Dumper
47
48from jinja2 import Template
49
50import logging
51logging.basicConfig(format='# %(levelname)s: %(message)s' )
52logger = logging.getLogger()
53logger.setLevel(logging.DEBUG)
54
55
56if os.environ.has_key('CONFIGROOT'):
57 NODE_DIR = os.environ['CONFIGROOT']
58else:
59 NODE_DIR = os.path.abspath(os.path.dirname(__file__)) + '/../nodes'
60__version__ = '$Id: gformat.py 10366 2012-04-07 10:08:14Z rick $'
61
62
63files = [
64 'authorized_keys',
65 'dnsmasq.conf',
66 'rc.conf.local',
67 'resolv.conf',
68 'motd',
69 'wleiden.yaml',
70 ]
71
72# Global variables uses
73OK = 10
74DOWN = 20
75UNKNOWN = 90
76
77
78def make_relations():
79 """ Process _ALL_ yaml files to get connection relations """
80 errors = ""
81 poel = defaultdict(list)
82 for host in get_hostlist():
83 try:
84 datadump = get_yaml(host)
85 for iface_key in datadump['autogen_iface_keys']:
86 l = datadump[iface_key]['ip']
87 addr, mask = l.split('/')
88
89 # Not parsing of these folks please
90 if not valid_addr(addr):
91 continue
92
93 addr = parseaddr(addr)
94 mask = int(mask)
95 network = addr & ~((1 << (32 - mask)) - 1)
96 poel[network] += [(host,datadump[iface_key])]
97 except (KeyError, ValueError), e:
98 errors += "[FOUT] in '%s' interface '%s'" % (host,iface_key)
99 errors += e
100 continue
101 return (poel, errors)
102
103
104def get_proxylist():
105 """Get all available proxies proxyX sorting based on X number"""
106 proxylist = sorted([os.path.basename(x) for x in glob.glob("%s/proxy*" % NODE_DIR)],
107 key=lambda name: int(''.join([c for c in name if c in string.digits])),
108 cmp=lambda x,y: x - y) + sorted([os.path.basename(x) for x in glob.glob("%s/Proxy*" % NODE_DIR)])
109 return proxylist
110
111def get_hybridlist():
112 """Get all available proxies hybridX sorting based on X number"""
113 hybridlist = sorted([os.path.basename(x) for x in glob.glob("%s/hybrid*" % NODE_DIR)],
114 key=lambda name: int(''.join([c for c in name if c in string.digits])),
115 cmp=lambda x,y: x - y)
116 return hybridlist
117
118
119def valid_addr(addr):
120 """ Show which address is valid in which are not """
121 return str(addr).startswith('172.')
122
123
124def get_nodelist():
125 """ Get all available nodes - sorted """
126 nodelist = sorted([os.path.basename(x) for x in glob.glob("%s/CNode*" % NODE_DIR)])
127 return nodelist
128
129def get_hostlist():
130 """ Combined hosts and proxy list"""
131 return get_nodelist() + get_proxylist() + get_hybridlist()
132
133def angle_between_points(lat1,lat2,long1,long2):
134 """
135 Return Angle in radians between two GPS coordinates
136 See: http://stackoverflow.com/questions/3809179/angle-between-2-gps-coordinates
137 """
138 dy = lat2 - lat1
139 dx = math.cos(math.pi/180*lat1)*(long2 - long1)
140 angle = math.atan2(dy,dx)
141 return angle
142
143def angle_to_cd(angle):
144 """ Return Dutch Cardinal Direction estimation in 'one digit' of radian angle """
145
146 # For easy conversion get positive degree
147 degrees = math.degrees(angle)
148 if degrees < 0:
149 360 - abs(degrees)
150
151 # Numbers can be confusing calculate from the 4 main directions
152 p = 22.5
153 if degrees < p:
154 return "n"
155 elif degrees < (90 - p):
156 return "no"
157 elif degrees < (90 + p):
158 return "o"
159 elif degrees < (180 - p):
160 return "zo"
161 elif degrees < (180 + p):
162 return "z"
163 elif degrees < (270 - p):
164 return "zw"
165 elif degrees < (270 + p):
166 return "w"
167 elif degrees < (360 - p):
168 return "nw"
169 else:
170 return "n"
171
172
173def generate_title(nodelist):
174 """ Main overview page """
175 items = {'root' : "." }
176 output = """
177<html>
178 <head>
179 <title>Wireless leiden Configurator - GFormat</title>
180 <style type="text/css">
181 th {background-color: #999999}
182 tr:nth-child(odd) {background-color: #cccccc}
183 tr:nth-child(even) {background-color: #ffffff}
184 th, td {padding: 0.1em 1em}
185 </style>
186 </head>
187 <body>
188 <center>
189 <form type="GET" action="%(root)s">
190 <input type="hidden" name="action" value="update">
191 <input type="submit" value="Update Configuration Database (SVN)">
192 </form>
193 <table>
194 <caption><h3>Wireless Leiden Configurator</h3></caption>
195 """ % items
196
197 for node in nodelist:
198 items['node'] = node
199 output += '<tr><td><a href="%(root)s/%(node)s">%(node)s</a></td>' % items
200 for config in files:
201 items['config'] = config
202 output += '<td><a href="%(root)s/%(node)s/%(config)s">%(config)s</a></td>' % items
203 output += "</tr>"
204 output += """
205 </table>
206 <hr />
207 <em>%s</em>
208 </center>
209 </body>
210</html>
211 """ % __version__
212
213 return output
214
215
216
217def generate_node(node):
218 """ Print overview of all files available for node """
219 return "\n".join(files)
220
221def generate_node_overview(host):
222 """ Print overview of all files available for node """
223 datadump = get_yaml(host)
224 params = { 'host' : host }
225 output = "<em><a href='..'>Back to overview</a></em><hr />"
226 output += "<h2>Available files:</h2><ul>"
227 for cf in files:
228 params['cf'] = cf
229 output += '<li><a href="%(host)s/%(cf)s">%(cf)s</a></li>\n' % params
230 output += "</ul>"
231
232 # Generate and connection listing
233 output += "<h2>Connected To:</h2><ul>"
234 (poel, errors) = make_relations()
235 for network, hosts in poel.iteritems():
236 if host in [x[0] for x in hosts]:
237 if len(hosts) == 1:
238 # Single not connected interface
239 continue
240 for remote,ifacedump in hosts:
241 if remote == host:
242 # This side of the interface
243 continue
244 params = { 'remote': remote, 'remote_ip' : ifacedump['ip'] }
245 output += '<li><a href="%(remote)s">%(remote)s</a> -- %(remote_ip)s</li>\n' % params
246 output += "</ul>"
247 output += "<h2>MOTD details:</h2><pre>" + generate_motd(datadump) + "</pre>"
248
249 output += "<hr /><em><a href='..'>Back to overview</a></em>"
250 return output
251
252
253def generate_header(ctag="#"):
254 return """\
255%(ctag)s
256%(ctag)s DO NOT EDIT - Automatically generated by 'gformat'
257%(ctag)s Generated at %(date)s by %(host)s
258%(ctag)s
259""" % { 'ctag' : ctag, 'date' : time.ctime(), 'host' : socket.gethostname() }
260
261
262
263def parseaddr(s):
264 """ Process IPv4 CIDR notation addr to a (binary) number """
265 f = s.split('.')
266 return (long(f[0]) << 24L) + \
267 (long(f[1]) << 16L) + \
268 (long(f[2]) << 8L) + \
269 long(f[3])
270
271
272
273def showaddr(a):
274 """ Display IPv4 addr in (dotted) CIDR notation """
275 return "%d.%d.%d.%d" % ((a >> 24) & 0xff, (a >> 16) & 0xff, (a >> 8) & 0xff, a & 0xff)
276
277
278def is_member(ip, mask, canidate):
279 """ Return True if canidate is part of ip/mask block"""
280 ip_addr = gformat.parseaddr(ip)
281 ip_canidate = gformat.parseaddr(canidate)
282 mask = int(mask)
283 ip_addr = ip_addr & ~((1 << (32 - mask)) - 1)
284 ip_canidate = ip_canidate & ~((1 << (32 - mask)) - 1)
285 return ip_addr == ip_canidate
286
287
288
289
290def netmask2subnet(netmask):
291 """ Given a 'netmask' return corresponding CIDR """
292 return showaddr(0xffffffff & (0xffffffff << (32 - int(netmask))))
293
294
295
296def generate_dnsmasq_conf(datadump):
297 """ Generate configuration file '/usr/local/etc/dnsmasq.conf' """
298 output = generate_header()
299 output += """\
300# DHCP server options
301dhcp-authoritative
302dhcp-fqdn
303domain=dhcp.%(autogen_nodename_lower)s.%(autogen_domain)s
304domain-needed
305expand-hosts
306log-async=100
307
308# Low memory footprint
309cache-size=10000
310 \n""" % datadump
311
312 for iface_key in datadump['autogen_iface_keys']:
313 if not datadump[iface_key].has_key('comment'):
314 datadump[iface_key]['comment'] = None
315 output += "## %(interface)s - %(desc)s - %(comment)s\n" % datadump[iface_key]
316
317 try:
318 (dhcp_start, dhcp_stop) = datadump[iface_key]['dhcp'].split('-')
319 (ip, netmask) = datadump[iface_key]['ip'].split('/')
320 datadump[iface_key]['subnet'] = netmask2subnet(netmask)
321 except (AttributeError, ValueError):
322 output += "# not autoritive\n\n"
323 continue
324
325 dhcp_part = ".".join(ip.split('.')[0:3])
326 datadump[iface_key]['dhcp_start'] = dhcp_part + "." + dhcp_start
327 datadump[iface_key]['dhcp_stop'] = dhcp_part + "." + dhcp_stop
328 output += "dhcp-range=%(interface)s,%(dhcp_start)s,%(dhcp_stop)s,%(subnet)s,24h\n\n" % datadump[iface_key]
329
330 return output
331
332
333
334def generate_rc_conf_local(datadump):
335 """ Generate configuration file '/etc/rc.conf.local' """
336 datadump['autogen_ileiden_enable'] = 'yes' if datadump['ileiden'] else 'no'
337
338 ileiden_proxies = []
339 for proxy in get_proxylist():
340 proxydump = get_yaml(proxy)
341 if proxydump['ileiden']:
342 ileiden_proxies.append(proxydump)
343 datadump['autogen_ileiden_proxies'] = ','.join([x['masterip'] for x in ileiden_proxies])
344 datadump['autogen_ileiden_proxies_names'] = ','.join([x['autogen_item'] for x in ileiden_proxies])
345
346 output = generate_header("#");
347 output += Template("""\
348hostname='{{ autogen_fqdn }}.{{ autogen_domain }}'
349location='{{ location }}'
350nodetype="{{ nodetype }}"
351
352{% if tproxy -%}
353tproxy_enable='YES'
354tproxy_range='{{ tproxy }}'
355{% else -%}
356tproxy_enable='NO'
357{% endif -%}
358
359{% if nodetype == "Proxy" or nodetype == "Hybrid" %}
360#
361# Edge Configuration
362#
363
364
365# Firewall and Routing Configuration
366
367{% if gateway -%}
368defaultrouter="{{ gateway }}"
369{% else -%}
370#defaultrouter="NOTSET"
371{% endif -%}
372internalif="{{ internalif }}"
373ileiden_enable="{{ autogen_ileiden_enable }}"
374gateway_enable="{{ autogen_ileiden_enable }}"
375pf_enable="yes"
376pf_rules="/etc/pf.conf"
377{% if autogen_ileiden_enable == "yes" -%}
378pf_flags="-D ext_if={{ externalif }} -D int_if={{ internalif }} -D publicnat={80,443}"
379lvrouted_enable="{{ autogen_ileiden_enable }}"
380lvrouted_flags="-u -s s00p3rs3kr3t -m 28"
381{% else -%}
382pf_flags="-D ext_if={{ externalif }} -D int_if={{ internalif }} -D publicnat={0}"
383{% endif -%}
384{% if internalroute -%}
385static_routes="wleiden"
386route_wleiden="-net 172.16.0.0/12 {{ internalroute }}"
387{% endif -%}
388{% endif -%}
389
390{% if nodetype == "CNode" %}
391#
392# NODE iLeiden Configuration
393#
394# iLeiden Proxies {{ autogen_ileiden_proxies_names }}
395lvrouted_flags="-u -s s00p3rs3kr3t -m 28 -z {{ autogen_ileiden_proxies }}"
396{% endif %}
397{% if vpnif -%}
398 vpnif="{{ vpnif }}"
399{% endif -%}
400
401captive_portal_whitelist=""
402captive_portal_interfaces="{{ autogen_dhcp_interfaces }}"
403\n
404""").render(datadump)
405
406 # lo0 configuration:
407 # - 172.32.255.1/32 is the proxy.wleiden.net deflector
408 # - masterip is special as it needs to be assigned to at
409 # least one interface, so if not used assign to lo0
410 addrs_list = { 'lo0' : [("127.0.0.1/8", "LocalHost"), ("172.31.255.1/32","Proxy IP")] }
411 iface_map = {'lo0' : 'lo0'}
412 dhclient_if = {'lo0' : False}
413
414 masterip_used = False
415 for iface_key in datadump['autogen_iface_keys']:
416 if datadump[iface_key]['ip'].startswith(datadump['masterip']):
417 masterip_used = True
418 break
419 if not masterip_used:
420 addrs_list['lo0'].append((datadump['masterip'] + "/32", 'Master IP Not used in interface'))
421
422 for iface_key in datadump['autogen_iface_keys']:
423 ifacedump = datadump[iface_key]
424 ifname = ifacedump['autogen_ifname']
425
426 # Flag dhclient is possible
427 dhclient_if[ifname] = ifacedump.has_key('dhcpclient') and ifacedump['dhcpclient']
428
429 # Add interface IP to list
430 item = (ifacedump['ip'], ifacedump['desc'])
431 if addrs_list.has_key(ifname):
432 addrs_list[ifname].append(item)
433 else:
434 addrs_list[ifname] = [item]
435
436 # Alias only needs IP assignment for now, this might change if we
437 # are going to use virtual accesspoints
438 if "alias" in iface_key:
439 continue
440
441 # XXX: Might want to deduct type directly from interface name
442 if ifacedump['type'] in ['11a', '11b', '11g', 'wireless']:
443 # Default to station (client) mode
444 ifacedump['wlanmode'] = "sta"
445 if ifacedump['mode'] in ['master', 'master-wds', 'ap', 'ap-wds']:
446 ifacedump['wlanmode'] = "ap"
447 # Default to 802.11b mode
448 ifacedump['mode'] = '11b'
449 if ifacedump['type'] in ['11a', '11b' '11g']:
450 ifacedump['mode'] = ifacedump['type']
451
452 if not ifacedump.has_key('channel'):
453 if ifacedump['type'] == '11a':
454 ifacedump['channel'] = 36
455 else:
456 ifacedump['channel'] = 1
457
458 # Allow special hacks at the back like wds and stuff
459 if not ifacedump.has_key('extra'):
460 ifacedump['extra'] = 'regdomain ETSI country NL'
461
462 output += "wlans_%(interface)s='%(autogen_ifname)s'\n" % ifacedump
463 output += ("create_args_%(autogen_ifname)s='wlanmode %(wlanmode)s mode " +\
464 "%(mode)s ssid %(ssid)s %(extra)s channel %(channel)s'\n") % ifacedump
465
466 elif ifacedump['type'] in ['ethernet', 'eth']:
467 # No special config needed besides IP
468 pass
469 else:
470 assert False, "Unknown type " + ifacedump['type']
471
472 # Print IP address which needs to be assigned over here
473 output += "\n"
474 for iface,addrs in sorted(addrs_list.iteritems()):
475 for addr, comment in sorted(addrs,key=lambda x: parseaddr(x[0].split('/')[0])):
476 output += "# %s || %s || %s\n" % (iface, addr, comment)
477
478 # Write DHCLIENT entry
479 if dhclient_if[iface]:
480 output += "ifconfig_%s='SYNCDHCP'\n\n" % (iface)
481 else:
482 output += "ipv4_addrs_%s='%s'\n\n" % (iface, " ".join([x[0] for x in addrs]))
483
484 return output
485
486
487
488def get_yaml(item):
489 """ Get configuration yaml for 'item'"""
490 gfile = os.path.join(NODE_DIR,item,'wleiden.yaml')
491
492 f = open(gfile, 'r')
493 datadump = yaml.load(f,Loader=Loader)
494 f.close()
495
496 # Preformat certain needed variables for formatting and push those into special object
497 datadump['autogen_iface_keys'] = get_interface_keys(datadump)
498
499 wlan_count=0
500 for key in datadump['autogen_iface_keys']:
501 if datadump[key]['type'] in ['11a', '11b', '11g', 'wireless']:
502 datadump[key]['autogen_ifname'] = 'wlan%i' % wlan_count
503 wlan_count += 1
504 else:
505 datadump[key]['autogen_ifname'] = datadump[key]['interface'].split(':')[0]
506
507 dhcp_interfaces = [datadump[key]['autogen_ifname'] for key in datadump['autogen_iface_keys'] if datadump[key]['dhcp'] != 'no']
508 datadump['autogen_dhcp_interfaces'] = ' '.join(dhcp_interfaces)
509 datadump['autogen_item'] = item
510 datadump['autogen_fqdn'] = get_fqdn(datadump)
511
512 datadump['autogen_domain'] = datadump['domain'] if datadump.has_key('domain') else 'wleiden.net'
513 datadump['autogen_nodename_lower'] = datadump['nodename'].lower()
514 return datadump
515
516
517def store_yaml(datadump, header=False):
518 """ Store configuration yaml for 'item'"""
519 item = datadump['autogen_item']
520 gfile = os.path.join(NODE_DIR,item,'wleiden.yaml')
521
522 f = open(gfile, 'w')
523 f.write(generate_wleiden_yaml(datadump, header))
524 f.close()
525
526
527
528def get_all_configs():
529 """ Get dict with key 'host' with all configs present """
530 configs = dict()
531 for host in get_hostlist():
532 datadump = get_yaml(host)
533 configs[host] = datadump
534 return configs
535
536
537def get_interface_keys(config):
538 """ Quick hack to get all interface keys, later stage convert this to a iterator """
539 return sorted([elem for elem in config.keys() if (elem.startswith('iface_') and not "lo0" in elem)])
540
541
542def get_used_ips(configs):
543 """ Return array of all IPs used in config files"""
544 ip_list = []
545 for config in configs:
546 ip_list.append(config['masterip'])
547 for iface_key in get_interface_keys(config):
548 l = config[iface_key]['ip']
549 addr, mask = l.split('/')
550 # Special case do not process
551 if valid_addr(addr):
552 ip_list.append(addr)
553 else:
554 logger.error("## IP '%s' in '%s' not valid" % (addr, config['nodename']))
555 return sorted(ip_list)
556
557
558
559def generate_resolv_conf(datadump):
560 """ Generate configuration file '/etc/resolv.conf' """
561 output = generate_header("#");
562 output += """\
563search wleiden.net
564"""
565 if datadump['nodetype'] == 'Proxy':
566 output += """\
567# Try local (cache) first
568nameserver 127.0.0.1
569nameserver 8.8.8.8 # Google Public NameServer
570nameserver 8.8.4.4 # Google Public NameServer
571"""
572 elif datadump['nodetype'] == 'Hybrid':
573 for proxy in get_proxylist():
574 proxy_ip = get_yaml(proxy)['masterip']
575 output += "nameserver %-15s # %s\n" % (proxy_ip, proxy)
576 output += """\
577nameserver 8.8.8.8 # Google Public NameServer
578nameserver 8.8.4.4 # Google Public NameServer
579"""
580 else:
581 output += """\
582# Try local (cache) first
583nameserver 127.0.0.1
584
585# Proxies are recursive nameservers
586# needs to be in resolv.conf for dnsmasq as well
587""" % datadump
588 for proxy in get_proxylist():
589 proxy_ip = get_yaml(proxy)['masterip']
590 output += "nameserver %-15s # %s\n" % (proxy_ip, proxy)
591
592 return output
593
594def generate_motd(datadump):
595 """ Generate configuration file '/etc/motd' """
596 output = """\
597FreeBSD 9.0-RELEASE (kernel.wleiden) #0 r230587: Sun Jan 29 17:09:57 CET 2012
598
599 WWW: %(autogen_fqdn)s.wleiden.net - http://www.wirelessleiden.nl
600 Loc: %(location)s
601
602Interlinks:
603""" % datadump
604
605 # XXX: This is a hacky way to get the required data
606 for line in generate_rc_conf_local(datadump).split('\n'):
607 if '||' in line and not line[1:].split()[0] in ['lo0', 'ath0'] :
608 output += " - %s \n" % line[1:]
609 output += """\
610Attached bridges:
611"""
612 for iface_key in datadump['autogen_iface_keys']:
613 ifacedump = datadump[iface_key]
614 if ifacedump.has_key('ns_ip'):
615 output += " - %(interface)s || %(mode)s || %(ns_ip)s\n" % ifacedump
616
617 return output
618
619
620def format_yaml_value(value):
621 """ Get yaml value in right syntax for outputting """
622 if isinstance(value,str):
623 output = '"%s"' % value
624 else:
625 output = value
626 return output
627
628
629
630def format_wleiden_yaml(datadump):
631 """ Special formatting to ensure it is editable"""
632 output = "# Genesis config yaml style\n"
633 output += "# vim:ts=2:et:sw=2:ai\n"
634 output += "#\n"
635 iface_keys = [elem for elem in datadump.keys() if elem.startswith('iface_')]
636 for key in sorted(set(datadump.keys()) - set(iface_keys)):
637 output += "%-10s: %s\n" % (key, format_yaml_value(datadump[key]))
638
639 output += "\n\n"
640
641 key_order = [ 'comment', 'interface', 'ip', 'desc', 'sdesc', 'mode', 'type',
642 'extra_type', 'channel', 'ssid', 'dhcp' ]
643
644 for iface_key in sorted(iface_keys):
645 output += "%s:\n" % iface_key
646 for key in key_order + list(sorted(set(datadump[iface_key].keys()) - set(key_order))):
647 if datadump[iface_key].has_key(key):
648 output += " %-11s: %s\n" % (key, format_yaml_value(datadump[iface_key][key]))
649 output += "\n\n"
650
651 return output
652
653
654
655def generate_wleiden_yaml(datadump, header=True):
656 """ Generate (petty) version of wleiden.yaml"""
657 for key in datadump.keys():
658 if key.startswith('autogen_'):
659 del datadump[key]
660 # Interface autogen cleanups
661 elif type(datadump[key]) == dict:
662 for key2 in datadump[key].keys():
663 if key2.startswith('autogen_'):
664 del datadump[key][key2]
665
666 output = generate_header("#") if header else ''
667 output += format_wleiden_yaml(datadump)
668 return output
669
670
671def generate_yaml(datadump):
672 return generate_config(datadump['nodename'], "wleiden.yaml", datadump)
673
674
675
676def generate_config(node, config, datadump=None):
677 """ Print configuration file 'config' of 'node' """
678 output = ""
679 try:
680 # Load config file
681 if datadump == None:
682 datadump = get_yaml(node)
683
684 if config == 'wleiden.yaml':
685 output += generate_wleiden_yaml(datadump)
686 elif config == 'authorized_keys':
687 f = open(os.path.join(NODE_DIR,"global_keys"), 'r')
688 output += f.read()
689 f.close()
690 elif config == 'dnsmasq.conf':
691 output += generate_dnsmasq_conf(datadump)
692 elif config == 'rc.conf.local':
693 output += generate_rc_conf_local(datadump)
694 elif config == 'resolv.conf':
695 output += generate_resolv_conf(datadump)
696 elif config == 'motd':
697 output += generate_motd(datadump)
698 else:
699 assert False, "Config not found!"
700 except IOError, e:
701 output += "[ERROR] Config file not found"
702 return output
703
704
705
706def process_cgi_request():
707 """ When calling from CGI """
708 # Update repository if requested
709 form = cgi.FieldStorage()
710 if form.getvalue("action") == "update":
711 print "Refresh: 5; url=."
712 print "Content-type:text/plain\r\n\r\n",
713 print "[INFO] Updating subverion, please wait..."
714 print subprocess.Popen(['svn', 'cleanup', "%s/.." % NODE_DIR], stderr=subprocess.STDOUT, stdout=subprocess.PIPE).communicate()[0],
715 print subprocess.Popen(['svn', 'up', "%s/.." % NODE_DIR], stderr=subprocess.STDOUT, stdout=subprocess.PIPE).communicate()[0],
716 print "[INFO] All done, redirecting in 5 seconds"
717 sys.exit(0)
718
719
720 base_uri = os.environ['PATH_INFO']
721 uri = base_uri.strip('/').split('/')
722
723 output = ""
724 if not uri[0]:
725 if is_text_request():
726 output += "Content-type:text/plain\r\n\r\n"
727 output += '\n'.join(get_hostlist())
728 else:
729 output += "Content-type:text/html\r\n\r\n"
730 output += generate_title(get_hostlist())
731 elif len(uri) == 1:
732 if is_text_request():
733 output += "Content-type:text/plain\r\n\r\n"
734 output += generate_node(uri[0])
735 else:
736 output += "Content-type:text/html\r\n\r\n"
737 output += generate_node_overview(uri[0])
738 elif len(uri) == 2:
739 output += "Content-type:text/plain\r\n\r\n"
740 output += generate_config(uri[0], uri[1])
741 else:
742 assert False, "Invalid option"
743 print output
744
745def get_fqdn(datadump):
746 # Proxy naming convention is special, as the proxy name is also included in
747 # the nodename, when it comes to the numbered proxies.
748 if datadump['nodetype'] == 'Proxy':
749 fqdn = datadump['nodetype'] + datadump['nodename'].replace('proxy','')
750 else:
751 # By default the full name is listed and also a shortname CNAME for easy use.
752 fqdn = datadump['nodetype'] + datadump['nodename']
753 return(fqdn)
754
755
756
757def make_dns(output_dir = 'dns', external = False):
758 items = dict()
759
760 # hostname is key, IP is value
761 wleiden_zone = dict()
762 wleiden_cname = dict()
763
764 pool = dict()
765 for node in get_hostlist():
766 logger.info("Processing host %s", node)
767 datadump = get_yaml(node)
768
769 # Proxy naming convention is special
770 fqdn = get_fqdn(datadump)
771 if datadump['nodetype'] == 'CNode':
772 wleiden_cname[datadump['nodename']] = fqdn
773
774 wleiden_zone[fqdn] = datadump['masterip']
775
776 # Hacking to get proper DHCP IPs and hostnames
777 for iface_key in get_interface_keys(datadump):
778 iface_name = datadump[iface_key]['interface'].replace(':',"-alias-")
779 (ip, netmask) = datadump[iface_key]['ip'].split('/')
780 try:
781 (dhcp_start, dhcp_stop) = datadump[iface_key]['dhcp'].split('-')
782 datadump[iface_key]['subnet'] = netmask2subnet(netmask)
783 dhcp_part = ".".join(ip.split('.')[0:3])
784 if ip != datadump['masterip']:
785 wleiden_zone["dhcp-gateway-%s.%s" % (iface_name, fqdn)] = ip
786 for i in range(int(dhcp_start), int(dhcp_stop) + 1):
787 wleiden_zone["dhcp-%s-%s.%s" % (i, iface_name, fqdn)] = "%s.%s" % (dhcp_part, i)
788 except (AttributeError, ValueError):
789 # First push it into a pool, to indentify the counter-part later on
790 addr = parseaddr(ip)
791 netmask = int(netmask)
792 addr = addr & ~((1 << (32 - netmask)) - 1)
793 if pool.has_key(addr):
794 pool[addr] += [(iface_name, fqdn, ip)]
795 else:
796 pool[addr] = [(iface_name, fqdn, ip)]
797 continue
798
799
800 def pool_to_name(node, pool_members):
801 """Convert the joined name to a usable pool name"""
802
803 # Get rid of the own entry
804 pool_members = list(set(pool_members) - set([fqdn]))
805
806 target = oldname = ''
807 for node in sorted(pool_members):
808 (name, number) = re.match('^([A-Za-z]+)([0-9]*)$',node).group(1,2)
809 target += "-" + number if name == oldname else "-" + node if target else node
810 oldname = name
811
812 return target
813
814
815 # WL uses an /29 to configure an interface. IP's are ordered like this:
816 # MasterA (.1) -- DeviceA (.2) <<>> DeviceB (.3) --- SlaveB (.4)
817
818 sn = lambda x: re.sub(r'(?i)^cnode','',x)
819
820 # Automatic naming convention of interlinks namely 2 + remote.lower()
821 for (key,value) in pool.iteritems():
822 # Make sure they are sorted from low-ip to high-ip
823 value = sorted(value, key=lambda x: parseaddr(x[2]))
824
825 if len(value) == 1:
826 (iface_name, fqdn, ip) = value[0]
827 wleiden_zone["2unused-%s.%s" % (iface_name, fqdn)] = ip
828
829 # Device DNS names
830 if 'cnode' in fqdn.lower():
831 wleiden_zone["d-at-%s.%s" % (iface_name, fqdn)] = showaddr(parseaddr(ip) + 1)
832 wleiden_cname["d-at-%s.%s" % (iface_name,sn(fqdn))] = "d-at-%s.%s" % (iface_name, fqdn)
833
834 elif len(value) == 2:
835 (a_iface_name, a_fqdn, a_ip) = value[0]
836 (b_iface_name, b_fqdn, b_ip) = value[1]
837 wleiden_zone["2%s.%s" % (b_fqdn,a_fqdn)] = a_ip
838 wleiden_zone["2%s.%s" % (a_fqdn,b_fqdn)] = b_ip
839
840 # Device DNS names
841 if 'cnode' in a_fqdn.lower() and 'cnode' in b_fqdn.lower():
842 wleiden_zone["d-at-%s.%s" % (a_iface_name, a_fqdn)] = showaddr(parseaddr(a_ip) + 1)
843 wleiden_zone["d-at-%s.%s" % (b_iface_name, b_fqdn)] = showaddr(parseaddr(b_ip) - 1)
844 wleiden_cname["d-at-%s.%s" % (a_iface_name,sn(a_fqdn))] = "d-at-%s.%s" % (a_iface_name, a_fqdn)
845 wleiden_cname["d-at-%s.%s" % (b_iface_name,sn(b_fqdn))] = "d-at-%s.%s" % (b_iface_name, b_fqdn)
846 wleiden_cname["d2%s.%s" % (sn(b_fqdn),sn(a_fqdn))] = "d-at-%s.%s" % (a_iface_name, a_fqdn)
847 wleiden_cname["d2%s.%s" % (sn(a_fqdn),sn(b_fqdn))] = "d-at-%s.%s" % (b_iface_name, b_fqdn)
848
849 else:
850 pool_members = [k[1] for k in value]
851 for item in value:
852 (iface_name, fqdn, ip) = item
853 pool_name = "2pool-" + showaddr(key).replace('.','-') + "-" + pool_to_name(fqdn,pool_members)
854 wleiden_zone["%s.%s" % (pool_name, fqdn)] = ip
855
856 # Include static DNS entries
857 # XXX: Should they override the autogenerated results?
858 # XXX: Convert input to yaml more useable.
859 # Format:
860 ##; this is a comment
861 ## roomburgh=CNodeRoomburgh1
862 ## apkerk1.CNodeVosko=172.17.176.8 ;this as well
863 dns = yaml.load(open(os.path.join(NODE_DIR,'../dns/staticDNS.yaml'),'r'))
864
865 # Hack to allow special entries, for development
866 wleiden_raw = dns['raw']
867 del dns['raw']
868
869 for comment, block in dns.iteritems():
870 for k,v in block.iteritems():
871 if valid_addr(v):
872 wleiden_zone[k] = v
873 else:
874 wleiden_cname[k] = v
875
876 details = dict()
877 # 24 updates a day allowed
878 details['serial'] = time.strftime('%Y%m%d%H')
879
880 if external:
881 dns_masters = ['siteview.wirelessleiden.nl', 'ns1.vanderzwet.net']
882 else:
883 dns_masters = ['sunny.wleiden.net']
884
885 details['master'] = dns_masters[0]
886 details['ns_servers'] = '\n'.join(['\tNS\t%s.' % x for x in dns_masters])
887
888 dns_header = '''
889$TTL 3h
890%(zone)s. SOA %(master)s. beheer.lijst.wirelessleiden.nl. ( %(serial)s 1d 12h 1w 3h )
891 ; Serial, Refresh, Retry, Expire, Neg. cache TTL
892
893%(ns_servers)s
894 \n'''
895
896
897 if not os.path.isdir(output_dir):
898 os.makedirs(output_dir)
899 details['zone'] = 'wleiden.net'
900 f = open(os.path.join(output_dir,"db." + details['zone']), "w")
901 f.write(dns_header % details)
902
903 for host,ip in wleiden_zone.iteritems():
904 if valid_addr(ip):
905 f.write("%s.wleiden.net. IN A %s \n" % (host.lower(), ip))
906 for source,dest in wleiden_cname.iteritems():
907 f.write("%s.wleiden.net. IN CNAME %s.wleiden.net.\n" % (source.lower(), dest.lower()))
908 for source, dest in wleiden_raw.iteritems():
909 f.write("%s.wleiden.net. %s\n" % (source, dest))
910 f.close()
911
912 # Create whole bunch of specific sub arpa zones. To keep it compliant
913 for s in range(16,32):
914 details['zone'] = '%i.172.in-addr.arpa' % s
915 f = open(os.path.join(output_dir,"db." + details['zone']), "w")
916 f.write(dns_header % details)
917
918 #XXX: Not effient, fix to proper data structure and do checks at other
919 # stages
920 for host,ip in wleiden_zone.iteritems():
921 if valid_addr(ip):
922 if int(ip.split('.')[1]) == s:
923 rev_ip = '.'.join(reversed(ip.split('.')))
924 f.write("%s.in-addr.arpa. IN PTR %s.wleiden.net.\n" % (rev_ip.lower(), host.lower()))
925 f.close()
926
927
928def usage():
929 print """Usage: %s <standalone [port] |test [test arguments]|static|dns>
930Examples:
931\tdns [outputdir] = Generate BIND compliant zone files in dns.
932\tstandalone = Run configurator webserver [default port=8000]
933\twind-export = Generate SQL import scripts for WIND database
934\tfull-export = Generate yaml export script for heatmap.
935\tstatic = Generate all config files and store on disk
936\t with format ./static/%%NODE%%/%%FILE%%
937\ttest CNodeRick dnsmasq.conf = Receive output of CGI script
938\t for arguments CNodeRick/dnsmasq.conf
939\tlist <all|nodes|proxies> = List systems which marked up.
940"""
941 exit(0)
942
943
944def is_text_request():
945 """ Find out whether we are calling from the CLI or any text based CLI utility """
946 try:
947 return os.environ['HTTP_USER_AGENT'].split()[0] in ['curl', 'fetch', 'wget']
948 except KeyError:
949 return True
950
951def main():
952 """Hard working sub"""
953 # Allow easy hacking using the CLI
954 if not os.environ.has_key('PATH_INFO'):
955 if len(sys.argv) < 2:
956 usage()
957
958 if sys.argv[1] == "standalone":
959 import SocketServer
960 import CGIHTTPServer
961 # Hop to the right working directory.
962 os.chdir(os.path.dirname(__file__))
963 try:
964 PORT = int(sys.argv[2])
965 except (IndexError,ValueError):
966 PORT = 8000
967
968 class MyCGIHTTPRequestHandler(CGIHTTPServer.CGIHTTPRequestHandler):
969 """ Serve this CGI from the root of the webserver """
970 def is_cgi(self):
971 if "favicon" in self.path:
972 return False
973
974 self.cgi_info = (os.path.basename(__file__), self.path)
975 self.path = ''
976 return True
977 handler = MyCGIHTTPRequestHandler
978 SocketServer.TCPServer.allow_reuse_address = True
979 httpd = SocketServer.TCPServer(("", PORT), handler)
980 httpd.server_name = 'localhost'
981 httpd.server_port = PORT
982
983 logger.info("serving at port %s", PORT)
984 try:
985 httpd.serve_forever()
986 except KeyboardInterrupt:
987 httpd.shutdown()
988 logger.info("All done goodbye")
989 elif sys.argv[1] == "test":
990 os.environ['PATH_INFO'] = "/".join(sys.argv[2:])
991 os.environ['SCRIPT_NAME'] = __file__
992 process_cgi_request()
993 elif sys.argv[1] == "unit-test":
994 os.environ['SCRIPT_NAME'] = __file__
995 for host in get_hostlist():
996 for outfile in files:
997 os.environ['PATH_INFO'] = "/".join([host,outfile])
998 try:
999 process_cgi_request()
1000 except Exception:
1001 print "# ERROR: %s" % os.environ['PATH_INFO']
1002 raise
1003
1004
1005 elif sys.argv[1] == "static":
1006 items = dict()
1007 for node in get_hostlist():
1008 items['node'] = node
1009 items['wdir'] = "./static/%(node)s" % items
1010 if not os.path.isdir(items['wdir']):
1011 os.makedirs(items['wdir'])
1012 datadump = get_yaml(node)
1013 for config in files:
1014 items['config'] = config
1015 logger.info("## Generating %(node)s %(config)s" % items)
1016 f = open("%(wdir)s/%(config)s" % items, "w")
1017 f.write(generate_config(node, config, datadump))
1018 f.close()
1019 elif sys.argv[1] == "wind-export":
1020 items = dict()
1021 for node in get_hostlist():
1022 datadump = get_yaml(node)
1023 sql = """INSERT IGNORE INTO nodes (name, name_ns, longitude, latitude)
1024 VALUES ('%(nodename)s', '%(nodename)s', %(latitude)s, %(longitude)s);""" % datadump;
1025 sql = """INSERT IGNORE INTO users_nodes (user_id, node_id, owner)
1026 VALUES (
1027 (SELECT id FROM users WHERE username = 'rvdzwet'),
1028 (SELECT id FROM nodes WHERE name = '%(nodename)s'),
1029 'Y');""" % datadump
1030 #for config in files:
1031 # items['config'] = config
1032 # print "## Generating %(node)s %(config)s" % items
1033 # f = open("%(wdir)s/%(config)s" % items, "w")
1034 # f.write(generate_config(node, config, datadump))
1035 # f.close()
1036 for node in get_hostlist():
1037 datadump = get_yaml(node)
1038 for iface_key in sorted([elem for elem in datadump.keys() if elem.startswith('iface_')]):
1039 ifacedump = datadump[iface_key]
1040 if ifacedump.has_key('mode') and ifacedump['mode'] == 'ap-wds':
1041 ifacedump['nodename'] = datadump['nodename']
1042 if not ifacedump.has_key('channel') or not ifacedump['channel']:
1043 ifacedump['channel'] = 0
1044 sql = """INSERT INTO links (node_id, type, ssid, protocol, channel, status)
1045 VALUES ((SELECT id FROM nodes WHERE name = '%(nodename)s'), 'ap',
1046 '%(ssid)s', 'IEEE 802.11b', %(channel)s, 'active');""" % ifacedump
1047 elif sys.argv[1] == "full-export":
1048 hosts = {}
1049 for node in get_hostlist():
1050 datadump = get_yaml(node)
1051 hosts[datadump['nodename']] = datadump
1052 print yaml.dump(hosts)
1053
1054 elif sys.argv[1] == "dns":
1055 make_dns(sys.argv[2] if len(sys.argv) > 2 else 'dns', 'external' in sys.argv)
1056 elif sys.argv[1] == "cleanup":
1057 # First generate all datadumps
1058 datadumps = dict()
1059 for host in get_hostlist():
1060 logger.info("# Processing: %s", host)
1061 datadump = get_yaml(host)
1062 datadumps[get_fqdn(datadump)] = datadump
1063
1064 for host,datadump in datadumps.iteritems():
1065 datadump['latitude'], datadump['longitude'] = rdnap.rd2etrs(datadump['rdnap_x'], datadump['rdnap_y'])
1066 if datadump['nodename'].startswith('Proxy'):
1067 datadump['nodename'] = datadump['nodename'].lower()
1068
1069 for iface_key in datadump['autogen_iface_keys']:
1070 # Wireless Leiden SSID have an consistent lowercase/uppercase
1071 if datadump[iface_key].has_key('ssid'):
1072 ssid = datadump[iface_key]['ssid']
1073 prefix = 'ap-WirelessLeiden-'
1074 if ssid.lower().startswith(prefix.lower()):
1075 datadump[iface_key]['ssid'] = prefix + ssid[len(prefix)].upper() + ssid[len(prefix) + 1:]
1076 if datadump[iface_key].has_key('ns_ip') and not datadump[iface_key].has_key('mode'):
1077 datadump[iface_key]['mode'] = 'autogen-FIXME'
1078 if not datadump[iface_key].has_key('desc'):
1079 datadump[iface_key]['desc'] = 'autogen-FIXME'
1080 store_yaml(datadump)
1081 elif sys.argv[1] == "list":
1082 if sys.argv[2] == "nodes":
1083 systems = get_nodelist()
1084 elif sys.argv[2] == "proxies":
1085 systems = get_proxylist()
1086 elif sys.argv[2] == "all":
1087 systems = get_hostlist()
1088 else:
1089 usage()
1090 for system in systems:
1091 datadump = get_yaml(system)
1092 if datadump['status'] == "up":
1093 print system
1094 else:
1095 usage()
1096 else:
1097 # Do not enable debugging for config requests as it highly clutters the output
1098 if not is_text_request():
1099 cgitb.enable()
1100 process_cgi_request()
1101
1102
1103if __name__ == "__main__":
1104 main()
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