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a3acf0b0 | 1 | #!/usr/bin/python |
00c08589 | 2 | # Copyright (c) 2009, 2010, 2011 Nicira Networks |
a3acf0b0 JP |
3 | # |
4 | # Licensed under the Apache License, Version 2.0 (the "License"); | |
5 | # you may not use this file except in compliance with the License. | |
6 | # You may obtain a copy of the License at: | |
7 | # | |
8 | # http://www.apache.org/licenses/LICENSE-2.0 | |
9 | # | |
10 | # Unless required by applicable law or agreed to in writing, software | |
11 | # distributed under the License is distributed on an "AS IS" BASIS, | |
12 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
13 | # See the License for the specific language governing permissions and | |
14 | # limitations under the License. | |
15 | ||
16 | ||
17 | # A daemon to monitor attempts to create GRE-over-IPsec tunnels. | |
18 | # Uses racoon and setkey to support the configuration. Assumes that | |
19 | # OVS has complete control over IPsec configuration for the box. | |
20 | ||
21 | # xxx To-do: | |
22 | # - Doesn't actually check that Interface is connected to bridge | |
3c52fa7b JP |
23 | # - If a certificate is badly formed, Racoon will refuse to start. We |
24 | # should do a better job of verifying certificates are valid before | |
25 | # adding an interface to racoon.conf. | |
a3acf0b0 JP |
26 | |
27 | ||
b153e667 | 28 | import argparse |
3c52fa7b | 29 | import glob |
a3acf0b0 | 30 | import os |
a3acf0b0 JP |
31 | import subprocess |
32 | import sys | |
33 | ||
8cdf0349 | 34 | import ovs.dirs |
a3acf0b0 JP |
35 | from ovs.db import error |
36 | from ovs.db import types | |
37 | import ovs.util | |
38 | import ovs.daemon | |
39 | import ovs.db.idl | |
27ae98ba | 40 | import ovs.vlog |
a3acf0b0 | 41 | |
27ae98ba | 42 | vlog = ovs.vlog.Vlog("ovs-monitor-ipsec") |
b54bdbe9 | 43 | root_prefix = '' # Prefix for absolute file names, for testing. |
a3acf0b0 JP |
44 | setkey = "/usr/sbin/setkey" |
45 | ||
0f4d9dce | 46 | |
a3acf0b0 JP |
47 | # Class to configure the racoon daemon, which handles IKE negotiation |
48 | class Racoon: | |
49 | # Default locations for files | |
50 | conf_file = "/etc/racoon/racoon.conf" | |
3c52fa7b | 51 | cert_dir = "/etc/racoon/certs" |
a3acf0b0 JP |
52 | psk_file = "/etc/racoon/psk.txt" |
53 | ||
3c52fa7b JP |
54 | # Racoon configuration header we use for IKE |
55 | conf_header = """# Configuration file generated by Open vSwitch | |
a3acf0b0 JP |
56 | # |
57 | # Do not modify by hand! | |
58 | ||
3c52fa7b JP |
59 | path pre_shared_key "%s"; |
60 | path certificate "%s"; | |
a3acf0b0 | 61 | |
3c52fa7b JP |
62 | """ |
63 | ||
64 | # Racoon configuration footer we use for IKE | |
65 | conf_footer = """sainfo anonymous { | |
66 | pfs_group 2; | |
67 | lifetime time 1 hour; | |
68 | encryption_algorithm aes; | |
69 | authentication_algorithm hmac_sha1, hmac_md5; | |
70 | compression_algorithm deflate; | |
71 | } | |
72 | ||
73 | """ | |
74 | ||
75 | # Certificate entry template. | |
76 | cert_entry = """remote %s { | |
a3acf0b0 | 77 | exchange_mode main; |
e97a1034 | 78 | nat_traversal on; |
73976ebd | 79 | ike_frag on; |
3c52fa7b JP |
80 | certificate_type x509 "%s" "%s"; |
81 | my_identifier asn1dn; | |
82 | peers_identifier asn1dn; | |
83 | peers_certfile x509 "%s"; | |
84 | verify_identifier on; | |
a3acf0b0 JP |
85 | proposal { |
86 | encryption_algorithm aes; | |
87 | hash_algorithm sha1; | |
3c52fa7b | 88 | authentication_method rsasig; |
a3acf0b0 JP |
89 | dh_group 2; |
90 | } | |
91 | } | |
92 | ||
3c52fa7b JP |
93 | """ |
94 | ||
95 | # Pre-shared key template. | |
96 | psk_entry = """remote %s { | |
97 | exchange_mode main; | |
98 | nat_traversal on; | |
99 | proposal { | |
100 | encryption_algorithm aes; | |
101 | hash_algorithm sha1; | |
102 | authentication_method pre_shared_key; | |
103 | dh_group 2; | |
104 | } | |
a3acf0b0 | 105 | } |
3c52fa7b | 106 | |
a3acf0b0 JP |
107 | """ |
108 | ||
109 | def __init__(self): | |
110 | self.psk_hosts = {} | |
111 | self.cert_hosts = {} | |
112 | ||
b54bdbe9 | 113 | if not os.path.isdir(root_prefix + self.cert_dir): |
ef035eef JP |
114 | os.mkdir(self.cert_dir) |
115 | ||
3c52fa7b | 116 | # Clean out stale peer certs from previous runs |
b54bdbe9 BP |
117 | for ovs_cert in glob.glob("%s%s/ovs-*.pem" |
118 | % (root_prefix, self.cert_dir)): | |
3c52fa7b JP |
119 | try: |
120 | os.remove(ovs_cert) | |
121 | except OSError: | |
a251af0a | 122 | vlog.warn("couldn't remove %s" % ovs_cert) |
a3acf0b0 | 123 | |
3c52fa7b JP |
124 | # Replace racoon's conf file with our template |
125 | self.commit() | |
a3acf0b0 JP |
126 | |
127 | def reload(self): | |
b54bdbe9 BP |
128 | exitcode = subprocess.call([root_prefix + "/etc/init.d/racoon", |
129 | "reload"]) | |
a3acf0b0 | 130 | if exitcode != 0: |
215d7280 | 131 | # Racoon is finicky about its configuration file and will |
3c52fa7b JP |
132 | # refuse to start if it sees something it doesn't like |
133 | # (e.g., a certificate file doesn't exist). Try restarting | |
134 | # the process before giving up. | |
a251af0a | 135 | vlog.warn("attempting to restart racoon") |
b54bdbe9 BP |
136 | exitcode = subprocess.call([root_prefix + "/etc/init.d/racoon", |
137 | "restart"]) | |
3c52fa7b | 138 | if exitcode != 0: |
a251af0a | 139 | vlog.warn("couldn't reload racoon") |
3c52fa7b JP |
140 | |
141 | def commit(self): | |
142 | # Rewrite the Racoon configuration file | |
b54bdbe9 | 143 | conf_file = open(root_prefix + self.conf_file, 'w') |
3c52fa7b JP |
144 | conf_file.write(Racoon.conf_header % (self.psk_file, self.cert_dir)) |
145 | ||
146 | for host, vals in self.cert_hosts.iteritems(): | |
147 | conf_file.write(Racoon.cert_entry % (host, vals["certificate"], | |
148 | vals["private_key"], vals["peer_cert_file"])) | |
149 | ||
150 | for host in self.psk_hosts: | |
151 | conf_file.write(Racoon.psk_entry % host) | |
152 | ||
153 | conf_file.write(Racoon.conf_footer) | |
154 | conf_file.close() | |
155 | ||
156 | # Rewrite the pre-shared keys file; it must only be readable by root. | |
157 | orig_umask = os.umask(0077) | |
b54bdbe9 | 158 | psk_file = open(root_prefix + Racoon.psk_file, 'w') |
3c52fa7b JP |
159 | os.umask(orig_umask) |
160 | ||
161 | psk_file.write("# Generated by Open vSwitch...do not modify by hand!") | |
162 | psk_file.write("\n\n") | |
163 | for host, vals in self.psk_hosts.iteritems(): | |
164 | psk_file.write("%s %s\n" % (host, vals["psk"])) | |
165 | psk_file.close() | |
a3acf0b0 | 166 | |
3c52fa7b | 167 | self.reload() |
a3acf0b0 | 168 | |
3c52fa7b JP |
169 | def _add_psk(self, host, psk): |
170 | if host in self.cert_hosts: | |
171 | raise error.Error("host %s already defined for cert" % host) | |
a3acf0b0 | 172 | |
a3acf0b0 | 173 | self.psk_hosts[host] = psk |
3c52fa7b JP |
174 | self.commit() |
175 | ||
176 | def _verify_certs(self, vals): | |
177 | # Racoon will refuse to start if the certificate files don't | |
178 | # exist, so verify that they're there. | |
b54bdbe9 | 179 | if not os.path.isfile(root_prefix + vals["certificate"]): |
3c52fa7b JP |
180 | raise error.Error("'certificate' file does not exist: %s" |
181 | % vals["certificate"]) | |
b54bdbe9 | 182 | elif not os.path.isfile(root_prefix + vals["private_key"]): |
3c52fa7b JP |
183 | raise error.Error("'private_key' file does not exist: %s" |
184 | % vals["private_key"]) | |
185 | ||
186 | # Racoon won't start if a given certificate or private key isn't | |
187 | # valid. This is a weak test, but will detect the most flagrant | |
188 | # errors. | |
189 | if vals["peer_cert"].find("-----BEGIN CERTIFICATE-----") == -1: | |
190 | raise error.Error("'peer_cert' is not in valid PEM format") | |
191 | ||
b54bdbe9 | 192 | cert = open(root_prefix + vals["certificate"]).read() |
3c52fa7b JP |
193 | if cert.find("-----BEGIN CERTIFICATE-----") == -1: |
194 | raise error.Error("'certificate' is not in valid PEM format") | |
195 | ||
b54bdbe9 | 196 | cert = open(root_prefix + vals["private_key"]).read() |
3c52fa7b JP |
197 | if cert.find("-----BEGIN RSA PRIVATE KEY-----") == -1: |
198 | raise error.Error("'private_key' is not in valid PEM format") | |
3c52fa7b JP |
199 | |
200 | def _add_cert(self, host, vals): | |
a3acf0b0 | 201 | if host in self.psk_hosts: |
3c52fa7b JP |
202 | raise error.Error("host %s already defined for psk" % host) |
203 | ||
ef7ee76a | 204 | if vals["certificate"] == None: |
3c52fa7b | 205 | raise error.Error("'certificate' not defined for %s" % host) |
ef7ee76a | 206 | elif vals["private_key"] == None: |
0f4d9dce | 207 | # Assume the private key is stored in the same PEM file as |
3c52fa7b JP |
208 | # the certificate. We make a copy of "vals" so that we don't |
209 | # modify the original "vals", which would cause the script | |
210 | # to constantly think that the configuration has changed | |
211 | # in the database. | |
212 | vals = vals.copy() | |
213 | vals["private_key"] = vals["certificate"] | |
214 | ||
215 | self._verify_certs(vals) | |
216 | ||
217 | # The peer's certificate comes to us in PEM format as a string. | |
218 | # Write that string to a file for Racoon to use. | |
219 | peer_cert_file = "%s/ovs-%s.pem" % (self.cert_dir, host) | |
b54bdbe9 | 220 | f = open(root_prefix + peer_cert_file, "w") |
3c52fa7b JP |
221 | f.write(vals["peer_cert"]) |
222 | f.close() | |
223 | ||
224 | vals["peer_cert_file"] = peer_cert_file | |
225 | ||
226 | self.cert_hosts[host] = vals | |
227 | self.commit() | |
228 | ||
229 | def _del_cert(self, host): | |
230 | peer_cert_file = self.cert_hosts[host]["peer_cert_file"] | |
231 | del self.cert_hosts[host] | |
232 | self.commit() | |
233 | try: | |
b54bdbe9 | 234 | os.remove(root_prefix + peer_cert_file) |
3c52fa7b JP |
235 | except OSError: |
236 | pass | |
237 | ||
238 | def add_entry(self, host, vals): | |
239 | if vals["peer_cert"]: | |
240 | self._add_cert(host, vals) | |
241 | elif vals["psk"]: | |
242 | self._add_psk(host, vals) | |
243 | ||
244 | def del_entry(self, host): | |
245 | if host in self.cert_hosts: | |
246 | self._del_cert(host) | |
247 | elif host in self.psk_hosts: | |
a3acf0b0 | 248 | del self.psk_hosts[host] |
3c52fa7b | 249 | self.commit() |
a3acf0b0 JP |
250 | |
251 | ||
252 | # Class to configure IPsec on a system using racoon for IKE and setkey | |
253 | # for maintaining the Security Association Database (SAD) and Security | |
254 | # Policy Database (SPD). Only policies for GRE are supported. | |
255 | class IPsec: | |
256 | def __init__(self): | |
257 | self.sad_flush() | |
258 | self.spd_flush() | |
259 | self.racoon = Racoon() | |
3c52fa7b | 260 | self.entries = [] |
a3acf0b0 JP |
261 | |
262 | def call_setkey(self, cmds): | |
263 | try: | |
b54bdbe9 BP |
264 | p = subprocess.Popen([root_prefix + setkey, "-c"], |
265 | stdin=subprocess.PIPE, | |
266 | stdout=subprocess.PIPE) | |
a3acf0b0 | 267 | except: |
a251af0a | 268 | vlog.err("could not call %s%s" % (root_prefix, setkey)) |
a3acf0b0 JP |
269 | sys.exit(1) |
270 | ||
271 | # xxx It is safer to pass the string into the communicate() | |
272 | # xxx method, but it didn't work for slightly longer commands. | |
273 | # xxx An alternative may need to be found. | |
274 | p.stdin.write(cmds) | |
275 | return p.communicate()[0] | |
276 | ||
277 | def get_spi(self, local_ip, remote_ip, proto="esp"): | |
278 | # Run the setkey dump command to retrieve the SAD. Then, parse | |
279 | # the output looking for SPI buried in the output. Note that | |
280 | # multiple SAD entries can exist for the same "flow", since an | |
281 | # older entry could be in a "dying" state. | |
282 | spi_list = [] | |
283 | host_line = "%s %s" % (local_ip, remote_ip) | |
b54bdbe9 | 284 | results = self.call_setkey("dump ;\n").split("\n") |
a3acf0b0 JP |
285 | for i in range(len(results)): |
286 | if results[i].strip() == host_line: | |
287 | # The SPI is in the line following the host pair | |
0f4d9dce | 288 | spi_line = results[i + 1] |
a3acf0b0 JP |
289 | if (spi_line[1:4] == proto): |
290 | spi = spi_line.split()[2] | |
291 | spi_list.append(spi.split('(')[1].rstrip(')')) | |
292 | return spi_list | |
293 | ||
294 | def sad_flush(self): | |
b54bdbe9 | 295 | self.call_setkey("flush;\n") |
a3acf0b0 JP |
296 | |
297 | def sad_del(self, local_ip, remote_ip): | |
298 | # To delete all SAD entries, we should be able to use setkey's | |
299 | # "deleteall" command. Unfortunately, it's fundamentally broken | |
300 | # on Linux and not documented as such. | |
301 | cmds = "" | |
302 | ||
303 | # Delete local_ip->remote_ip SAD entries | |
304 | spi_list = self.get_spi(local_ip, remote_ip) | |
305 | for spi in spi_list: | |
306 | cmds += "delete %s %s esp %s;\n" % (local_ip, remote_ip, spi) | |
307 | ||
308 | # Delete remote_ip->local_ip SAD entries | |
309 | spi_list = self.get_spi(remote_ip, local_ip) | |
310 | for spi in spi_list: | |
311 | cmds += "delete %s %s esp %s;\n" % (remote_ip, local_ip, spi) | |
312 | ||
313 | if cmds: | |
314 | self.call_setkey(cmds) | |
315 | ||
316 | def spd_flush(self): | |
b54bdbe9 | 317 | self.call_setkey("spdflush;\n") |
a3acf0b0 JP |
318 | |
319 | def spd_add(self, local_ip, remote_ip): | |
f916d1cc | 320 | cmds = ("spdadd %s %s gre -P out ipsec esp/transport//require;\n" % |
a3acf0b0 | 321 | (local_ip, remote_ip)) |
b54bdbe9 | 322 | cmds += ("spdadd %s %s gre -P in ipsec esp/transport//require;\n" % |
a3acf0b0 JP |
323 | (remote_ip, local_ip)) |
324 | self.call_setkey(cmds) | |
325 | ||
326 | def spd_del(self, local_ip, remote_ip): | |
3c52fa7b | 327 | cmds = "spddelete %s %s gre -P out;\n" % (local_ip, remote_ip) |
b54bdbe9 | 328 | cmds += "spddelete %s %s gre -P in;\n" % (remote_ip, local_ip) |
a3acf0b0 JP |
329 | self.call_setkey(cmds) |
330 | ||
3c52fa7b JP |
331 | def add_entry(self, local_ip, remote_ip, vals): |
332 | if remote_ip in self.entries: | |
333 | raise error.Error("host %s already configured for ipsec" | |
334 | % remote_ip) | |
a3acf0b0 | 335 | |
3c52fa7b | 336 | self.racoon.add_entry(remote_ip, vals) |
a3acf0b0 JP |
337 | self.spd_add(local_ip, remote_ip) |
338 | ||
3c52fa7b | 339 | self.entries.append(remote_ip) |
a3acf0b0 | 340 | |
3c52fa7b JP |
341 | def del_entry(self, local_ip, remote_ip): |
342 | if remote_ip in self.entries: | |
343 | self.racoon.del_entry(remote_ip) | |
344 | self.spd_del(local_ip, remote_ip) | |
345 | self.sad_del(local_ip, remote_ip) | |
346 | ||
347 | self.entries.remove(remote_ip) | |
a3acf0b0 JP |
348 | |
349 | ||
350 | def keep_table_columns(schema, table_name, column_types): | |
351 | table = schema.tables.get(table_name) | |
352 | if not table: | |
353 | raise error.Error("schema has no %s table" % table_name) | |
354 | ||
355 | new_columns = {} | |
356 | for column_name, column_type in column_types.iteritems(): | |
357 | column = table.columns.get(column_name) | |
358 | if not column: | |
359 | raise error.Error("%s table schema lacks %s column" | |
360 | % (table_name, column_name)) | |
361 | if column.type != column_type: | |
362 | raise error.Error("%s column in %s table has type \"%s\", " | |
363 | "expected type \"%s\"" | |
364 | % (column_name, table_name, | |
365 | column.type.toEnglish(), | |
366 | column_type.toEnglish())) | |
367 | new_columns[column_name] = column | |
368 | table.columns = new_columns | |
369 | return table | |
0f4d9dce EJ |
370 | |
371 | ||
8cdf0349 | 372 | def prune_schema(schema): |
a3acf0b0 | 373 | string_type = types.Type(types.BaseType(types.StringType)) |
ef7ee76a | 374 | optional_ssl_type = types.Type(types.BaseType(types.UuidType, |
0f4d9dce | 375 | ref_table_name='SSL'), None, 0, 1) |
a3acf0b0 JP |
376 | string_map_type = types.Type(types.BaseType(types.StringType), |
377 | types.BaseType(types.StringType), | |
378 | 0, sys.maxint) | |
0f4d9dce | 379 | |
a3acf0b0 JP |
380 | new_tables = {} |
381 | new_tables["Interface"] = keep_table_columns( | |
382 | schema, "Interface", {"name": string_type, | |
383 | "type": string_type, | |
e16a28b5 | 384 | "options": string_map_type}) |
ef7ee76a JP |
385 | new_tables["Open_vSwitch"] = keep_table_columns( |
386 | schema, "Open_vSwitch", {"ssl": optional_ssl_type}) | |
387 | new_tables["SSL"] = keep_table_columns( | |
388 | schema, "SSL", {"certificate": string_type, | |
389 | "private_key": string_type}) | |
a3acf0b0 JP |
390 | schema.tables = new_tables |
391 | ||
0f4d9dce | 392 | |
3c52fa7b JP |
393 | def update_ipsec(ipsec, interfaces, new_interfaces): |
394 | for name, vals in interfaces.iteritems(): | |
395 | if name not in new_interfaces: | |
396 | ipsec.del_entry(vals["local_ip"], vals["remote_ip"]) | |
397 | ||
398 | for name, vals in new_interfaces.iteritems(): | |
399 | orig_vals = interfaces.get(name) | |
400 | if orig_vals: | |
401 | # Configuration for this host already exists. Check if it's | |
402 | # changed. | |
403 | if vals == orig_vals: | |
404 | continue | |
405 | else: | |
406 | ipsec.del_entry(vals["local_ip"], vals["remote_ip"]) | |
407 | ||
408 | try: | |
409 | ipsec.add_entry(vals["local_ip"], vals["remote_ip"], vals) | |
410 | except error.Error, msg: | |
a251af0a | 411 | vlog.warn("skipping ipsec config for %s: %s" % (name, msg)) |
3c52fa7b | 412 | |
0f4d9dce | 413 | |
ef7ee76a | 414 | def get_ssl_cert(data): |
8cdf0349 | 415 | for ovs_rec in data["Open_vSwitch"].rows.itervalues(): |
ad6247f5 BP |
416 | if ovs_rec.ssl: |
417 | ssl = ovs_rec.ssl[0] | |
418 | if ssl.certificate and ssl.private_key: | |
419 | return (ssl.certificate, ssl.private_key) | |
ef7ee76a JP |
420 | |
421 | return None | |
422 | ||
0f4d9dce | 423 | |
b153e667 EJ |
424 | def main(): |
425 | ||
426 | parser = argparse.ArgumentParser() | |
427 | parser.add_argument("database", metavar="DATABASE", | |
428 | help="A socket on which ovsdb-server is listening.") | |
429 | parser.add_argument("--root-prefix", metavar="DIR", | |
430 | help="Use DIR as alternate root directory" | |
431 | " (for testing).") | |
0f4d9dce | 432 | |
27ae98ba | 433 | ovs.vlog.add_args(parser) |
b153e667 EJ |
434 | ovs.daemon.add_args(parser) |
435 | args = parser.parse_args() | |
27ae98ba | 436 | ovs.vlog.handle_args(args) |
b153e667 | 437 | ovs.daemon.handle_args(args) |
a3acf0b0 | 438 | |
b153e667 | 439 | global root_prefix |
c4f8424e EJ |
440 | if args.root_prefix: |
441 | root_prefix = args.root_prefix | |
8cdf0349 | 442 | |
b153e667 | 443 | remote = args.database |
8cdf0349 BP |
444 | schema_file = "%s/vswitch.ovsschema" % ovs.dirs.PKGDATADIR |
445 | schema = ovs.db.schema.DbSchema.from_json(ovs.json.from_file(schema_file)) | |
446 | prune_schema(schema) | |
447 | idl = ovs.db.idl.Idl(remote, schema) | |
a3acf0b0 JP |
448 | |
449 | ovs.daemon.daemonize() | |
450 | ||
451 | ipsec = IPsec() | |
452 | ||
453 | interfaces = {} | |
454 | while True: | |
455 | if not idl.run(): | |
456 | poller = ovs.poller.Poller() | |
457 | idl.wait(poller) | |
458 | poller.block() | |
459 | continue | |
ef7ee76a | 460 | |
8cdf0349 | 461 | ssl_cert = get_ssl_cert(idl.tables) |
0f4d9dce | 462 | |
a3acf0b0 | 463 | new_interfaces = {} |
8cdf0349 BP |
464 | for rec in idl.tables["Interface"].rows.itervalues(): |
465 | if rec.type == "ipsec_gre": | |
466 | name = rec.name | |
467 | options = rec.options | |
ef7ee76a | 468 | entry = { |
8cdf0349 BP |
469 | "remote_ip": options.get("remote_ip"), |
470 | "local_ip": options.get("local_ip", "0.0.0.0/0"), | |
471 | "certificate": options.get("certificate"), | |
472 | "private_key": options.get("private_key"), | |
473 | "use_ssl_cert": options.get("use_ssl_cert"), | |
474 | "peer_cert": options.get("peer_cert"), | |
0f4d9dce | 475 | "psk": options.get("psk")} |
a3acf0b0 | 476 | |
ef7ee76a | 477 | if entry["peer_cert"] and entry["psk"]: |
a251af0a EJ |
478 | vlog.warn("both 'peer_cert' and 'psk' defined for %s" |
479 | % name) | |
3c52fa7b | 480 | continue |
ef7ee76a | 481 | elif not entry["peer_cert"] and not entry["psk"]: |
a251af0a | 482 | vlog.warn("no 'peer_cert' or 'psk' defined for %s" % name) |
3c52fa7b | 483 | continue |
a3acf0b0 | 484 | |
ef7ee76a JP |
485 | # The "use_ssl_cert" option is deprecated and will |
486 | # likely go away in the near future. | |
487 | if entry["use_ssl_cert"] == "true": | |
488 | if not ssl_cert: | |
a251af0a | 489 | vlog.warn("no valid SSL entry for %s" % name) |
ef7ee76a JP |
490 | continue |
491 | ||
492 | entry["certificate"] = ssl_cert[0] | |
493 | entry["private_key"] = ssl_cert[1] | |
494 | ||
495 | new_interfaces[name] = entry | |
0f4d9dce | 496 | |
3c52fa7b JP |
497 | if interfaces != new_interfaces: |
498 | update_ipsec(ipsec, interfaces, new_interfaces) | |
a3acf0b0 | 499 | interfaces = new_interfaces |
0f4d9dce EJ |
500 | |
501 | ||
a3acf0b0 JP |
502 | if __name__ == '__main__': |
503 | try: | |
b153e667 | 504 | main() |
a3acf0b0 JP |
505 | except SystemExit: |
506 | # Let system.exit() calls complete normally | |
507 | raise | |
508 | except: | |
27ae98ba | 509 | vlog.exception("traceback") |
55f8a832 | 510 | sys.exit(ovs.daemon.RESTART_EXIT_CODE) |