3 """configuration files"""
9 from hashlib import sha1 as sha
17 from config import Config
23 def __init__(self, noscripts=False):
24 self.config = Config()
25 self.noscripts = noscripts
28 def checksum(self, path):
31 try: return sha(f.read()).digest()
33 except IOError: return None
35 def system(self, cmd):
36 if not self.noscripts and cmd:
37 logger.verbose('conf_files: running command %s' % cmd)
38 return tools.fork_as(None, os.system, cmd)
41 def update_conf_file(self, cf_rec):
42 if not cf_rec['enabled']: return
44 err_cmd = cf_rec['error_cmd']
45 mode = int(cf_rec['file_permissions'], base=8)
47 uid = pwd.getpwnam(cf_rec['file_owner'])[2]
49 logger.log('conf_files: cannot find user %s -- %s not updated'%(cf_rec['file_owner'], dest))
52 gid = grp.getgrnam(cf_rec['file_group'])[2]
54 logger.log('conf_files: cannot find group %s -- %s not updated'%(cf_rec['file_group'], dest))
56 url = 'https://%s/%s' % (self.config.PLC_BOOT_HOST, cf_rec['source'])
57 # set node_id at the end of the request - hacky
59 if url.find('?') >0: url += '&'
61 url += "node_id=%d"%tools.node_id()
63 logger.log('conf_files: %s -- WARNING, cannot add node_id to request'%dest)
65 logger.verbose("conf_files: retrieving URL=%s"%url)
66 contents = curlwrapper.retrieve(url, self.config.cacert)
67 except xmlrpc.client.ProtocolError as e:
68 logger.log('conf_files: failed to retrieve %s from %s, skipping' % (dest, url))
70 if not cf_rec['always_update'] and sha(contents).digest() == self.checksum(dest):
72 if self.system(cf_rec['preinstall_cmd']):
74 if not cf_rec['ignore_cmd_errors']: return
75 logger.log('conf_files: installing file %s from %s' % (dest, url))
76 try: os.makedirs(os.path.dirname(dest))
78 tools.write_file(dest, lambda f: f.write(contents), mode=mode, uidgid=(uid, gid))
79 if self.system(cf_rec['postinstall_cmd']): self.system(err_cmd)
81 def run_once(self, data):
82 if "conf_files" in data:
83 for f in data['conf_files']:
84 try: self.update_conf_file(f)
85 except: logger.log_exc("conf_files: failed to update conf_file")
87 logger.log_missing_data("conf_files.run_once", 'conf_files')
92 def GetSlivers(data, config = None, plc = None):
93 logger.log("conf_files: Running.")
96 logger.log("conf_files: Done.")
98 if __name__ == '__main__':
100 parser = optparse.OptionParser()
101 parser.add_option('-f', '--config', action='store', dest='config', default='/etc/planetlab/plc_config', help='PLC configuration file')
102 parser.add_option('-k', '--session', action='store', dest='session', default='/etc/planetlab/session', help='API session key (or file)')
103 parser.add_option('--noscripts', action='store_true', dest='noscripts', default=False, help='Do not run pre- or post-install scripts')
104 (options, args) = parser.parse_args()
106 # Load /etc/planetlab/plc_config
107 config = Config(options.config)
109 # Load /etc/planetlab/session
110 if os.path.exists(options.session):
111 with open(options.session) as f:
112 session = f.read().strip()
114 session = options.session
116 # Initialize XML-RPC client
117 from plcapi import PLCAPI
118 plc = PLCAPI(config.plc_api_uri, config.cacert, auth = session)
120 main = conf_files(options.noscripts)
121 data = plc.GetSlivers()