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f22ab085 | 1 | #!/usr/bin/python |
3fdcb9d1 MT |
2 | ############################################################################### |
3 | # # | |
4 | # ddns - A dynamic DNS client for IPFire # | |
5 | # Copyright (C) 2012 IPFire development team # | |
6 | # # | |
7 | # This program is free software: you can redistribute it and/or modify # | |
8 | # it under the terms of the GNU General Public License as published by # | |
9 | # the Free Software Foundation, either version 3 of the License, or # | |
10 | # (at your option) any later version. # | |
11 | # # | |
12 | # This program is distributed in the hope that it will be useful, # | |
13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of # | |
14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # | |
15 | # GNU General Public License for more details. # | |
16 | # # | |
17 | # You should have received a copy of the GNU General Public License # | |
18 | # along with this program. If not, see <http://www.gnu.org/licenses/>. # | |
19 | # # | |
20 | ############################################################################### | |
f22ab085 MT |
21 | |
22 | import logging | |
23 | import logging.handlers | |
24 | import ConfigParser | |
25 | ||
26 | from i18n import _ | |
27 | ||
28 | logger = logging.getLogger("ddns.core") | |
29 | logger.propagate = 1 | |
30 | ||
31 | from .providers import * | |
32 | from .system import DDNSSystem | |
33 | ||
34 | # Setup the logger. | |
35 | def setup_logging(): | |
36 | rootlogger = logging.getLogger("ddns") | |
37 | rootlogger.setLevel(logging.DEBUG) | |
38 | ||
39 | # Setup a logger that logs to syslog. | |
40 | #handler = logging.handlers.SysLogHandler(address="/dev/log") | |
41 | ||
42 | handler = logging.StreamHandler() | |
43 | rootlogger.addHandler(handler) | |
44 | ||
45 | setup_logging() | |
46 | ||
47 | class DDNSCore(object): | |
48 | def __init__(self, debug=False): | |
49 | # In debug mode, enable debug logging. | |
50 | if debug: | |
51 | logger.setLevel(logging.DEBUG) | |
52 | ||
53 | # Initialize the settings array. | |
54 | self.settings = {} | |
55 | ||
56 | # Dict with all providers, that are supported. | |
57 | self.providers = {} | |
58 | self.register_all_providers() | |
59 | ||
60 | # List of configuration entries. | |
61 | self.entries = [] | |
62 | ||
63 | # Add the system class. | |
64 | self.system = DDNSSystem(self) | |
65 | ||
66 | def register_provider(self, provider): | |
67 | """ | |
68 | Registers a new provider. | |
69 | """ | |
70 | assert issubclass(provider, DDNSProvider) | |
71 | ||
72 | provider_handle = provider.INFO.get("handle") | |
73 | assert provider_handle | |
74 | ||
75 | assert not self.providers.has_key(provider_handle), \ | |
76 | "Provider '%s' has already been registered" % provider_handle | |
77 | ||
78 | provider_name = provider.INFO.get("name") | |
79 | assert provider_name | |
80 | ||
81 | logger.debug("Registered new provider: %s (%s)" % (provider_name, provider_handle)) | |
82 | self.providers[provider_handle] = provider | |
83 | ||
84 | def register_all_providers(self): | |
85 | """ | |
86 | Simply registers all providers. | |
87 | """ | |
88 | for provider in ( | |
89 | DDNSProviderNOIP, | |
90 | DDNSProviderSelfhost, | |
91 | ): | |
92 | self.register_provider(provider) | |
93 | ||
94 | def load_configuration(self, filename): | |
95 | configs = ConfigParser.SafeConfigParser() | |
96 | configs.read([filename,]) | |
97 | ||
98 | # First apply all global configuration settings. | |
99 | for k, v in configs.items("config"): | |
100 | self.settings[k] = v | |
101 | ||
102 | for entry in configs.sections(): | |
103 | # Skip the special config section. | |
104 | if entry == "config": | |
105 | continue | |
106 | ||
107 | settings = {} | |
108 | for k, v in configs.items(entry): | |
109 | settings[k] = v | |
110 | settings["hostname"] = entry | |
111 | ||
112 | # Get the name of the provider. | |
113 | provider = settings.get("provider", None) | |
114 | if not provider: | |
115 | logger.warning("Entry '%s' lacks a provider setting. Skipping." % entry) | |
116 | continue | |
117 | ||
118 | # Try to find the provider with the wanted name. | |
119 | try: | |
120 | provider = self.providers[provider] | |
121 | except KeyError: | |
122 | logger.warning("Could not find provider '%s' for entry '%s'." % (provider, entry)) | |
123 | continue | |
124 | ||
125 | # Create an instance of the provider object with settings from the | |
126 | # configuration file. | |
127 | entry = provider(self, **settings) | |
128 | ||
129 | # Add new entry to list (if not already exists). | |
130 | if not entry in self.entries: | |
131 | self.entries.append(entry) | |
132 | ||
133 | def updateall(self): | |
134 | # If there are no entries, there is nothing to do. | |
135 | if not self.entries: | |
136 | logger.debug(_("Found no entries in the configuration file. Exiting.")) | |
137 | return | |
138 | ||
139 | # Update them all. | |
140 | for entry in self.entries: | |
141 | self.update(entry) | |
142 | ||
143 | def update(self, entry): | |
144 | try: | |
145 | entry() | |
146 | ||
147 | except DDNSUpdateError, e: | |
148 | logger.error(_("Dynamic DNS update for %(hostname)s (%(provider)s) failed:") % \ | |
149 | { "hostname" : entry.hostname, "provider" : entry.name }) | |
150 | logger.error(" %s" % e) | |
151 | ||
152 | except Exception, e: | |
153 | logger.error(_("Dynamic DNS update for %(hostname)s (%(provider)s) throwed an unhandled exception:") % \ | |
154 | { "hostname" : entry.hostname, "provider" : entry.name }) | |
155 | logger.error(" %s" % e) | |
156 | ||
157 | logger.info(_("Dynamic DNS update for %(hostname)s (%(provider)s) successful") % \ | |
158 | { "hostname" : entry.hostname, "provider" : entry.name }) |