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proc
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self
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root
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proc
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root
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usr
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lib
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python3.6
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site-packages
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up2date_client
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# This file is a portion of the Red Hat Update Agent # Copyright (c) 1999--2020 Red Hat, Inc. Distributed under GPL # # Authors: # Cristian Gafton <gafton@redhat.com> # Adrian Likins <alikins@redhat.com> # """ This module includes the Config and Up2date Config classes use by the up2date agent to hold config info. """ import os import sys import locale import requests from rhn.connections import idn_ascii_to_puny, idn_puny_to_unicode from rhn.i18n import ustr, sstr try: # python2 from urlparse import urlsplit, urlunsplit except ImportError: # python3 from urllib.parse import urlsplit, urlunsplit import gettext t = gettext.translation('rhn-client-tools', fallback=True) # Python 3 translations don't have a ugettext method if not hasattr(t, 'ugettext'): t.ugettext = t.gettext _ = t.ugettext # XXX: This could be moved in a more "static" location if it is too # much of an eye sore Defaults = { 'enableProxy' : ("Use a HTTP Proxy", 0), 'serverURL' : ("Remote server URL", "https://xmlrpc.cln.cloudlinux.com/XMLRPC/"), 'mirrorURL' : ("Mirror list URL", "https://repo.cloudlinux.com/cloudlinux/mirrorlists/cln-mirrors"), 'debug' : ("Whether or not debugging is enabled", 0), 'systemIdPath' : ("Location of system id", "/etc/sysconfig/rhn/systemid"), 'versionOverride' : ("Override the automatically determined "\ "system version", ""), 'httpProxy' : ("HTTP proxy in host:port format, e.g. "\ "squid.example.com:3128", ""), 'proxyUser' : ("The username for an authenticated proxy", ""), 'proxyPassword' : ("The password to use for an authenticated proxy", ""), 'enableProxyAuth' : ("To use an authenticated proxy or not", 0), 'networkRetries' : ("Number of attempts to make at network "\ "connections before giving up", 1), 'sslCACert' : ("The CA cert used to verify the ssl server", "/usr/share/rhn/CLN-ORG-TRUSTED-SSL-CERT"), 'noReboot' : ("Disable the reboot action", 0), 'disallowConfChanges': ("Config options that can not be overwritten by a config update action", ['sslCACert','serverURL','disallowConfChanges', 'noReboot']), } FileOptions = ['systemIdPath', 'sslCACert', 'tmpDir', ] # a peristent configuration storage class class ConfigFile: "class for handling persistent config options for the client" def __init__(self, filename = None): self.dict = {} self.fileName = filename if self.fileName: self.load() def load(self, filename = None): if filename: self.fileName = filename if self.fileName == None: return if not os.access(self.fileName, os.R_OK): # print("warning: can't access %s" % self.fileName) return f = open(self.fileName, "r") multiline = '' for line in f.readlines(): # strip comments if line.find('#') == 0: continue line = multiline + line.strip() if not line: continue # if line ends in '\', append the next line before parsing if line[-1] == '\\': multiline = line[:-1].strip() continue else: multiline = '' split = line.split('=', 1) if len(split) != 2: # not in 'a = b' format. we should log this # or maybe error. continue key = split[0].strip() value = ustr(split[1].strip()) # decode a comment line comment = None pos = key.find("[comment]") if pos != -1: key = key[:pos] comment = value value = None # figure out if we need to parse the value further if value: # possibly split value into a list values = value.split(";") if key in ['proxyUser', 'proxyPassword']: value = sstr(value.encode(locale.getpreferredencoding())) elif len(values) == 1: try: value = int(value) except ValueError: pass elif values[0] == "": value = [] else: # there could be whitespace between the values on # one line, let's strip it out value = [val.strip() for val in values if val.strip() ] # now insert the (comment, value) in the dictionary newval = (comment, value) if key in self.dict: # do we need to update newval = self.dict[key] if comment is not None: # override comment newval = (comment, newval[1]) if value is not None: # override value newval = (newval[0], value) self.dict[key] = newval f.close() def save(self): if self.fileName == None: return # this really shouldn't happen, since it means that the # /etc/sysconfig/rhn directory doesn't exist, which is way broken # and note the attempted fix breaks useage of this by the applet # since it reuses this code to create its config file, and therefore # tries to makedirs() the users home dir again (with a specific perms) # and fails (see #130391) if not os.access(self.fileName, os.R_OK): if not os.access(os.path.dirname(self.fileName), os.R_OK): print(_("%s was not found" % os.path.dirname(self.fileName))) return f = open(self.fileName+'.new', "w") os.chmod(self.fileName+'.new', int('0644', 8)) f.write("# Automatically generated Red Hat Update Agent "\ "config file, do not edit.\n") f.write("# Format: 1.0\n") f.write("") for key in self.dict.keys(): (comment, value) = self.dict[key] f.write(sstr(u"%s[comment]=%s\n" % (key, comment))) if type(value) != type([]): value = [ value ] if key in FileOptions: value = map(os.path.abspath, value) f.write(sstr(u"%s=%s\n" % (key, ';'.join(map(str, value))))) f.write("\n") f.close() os.rename(self.fileName+'.new', self.fileName) # dictionary interface def __contains__(self, name): return name in self.dict def has_key(self, name): # obsoleted, left for compatibility with older python return name in self def keys(self): return self.dict.keys() def values(self): return [a[1] for a in self.dict.values()] def update(self, dict): self.dict.update(dict) # we return None when we reference an invalid key instead of # raising an exception def __getitem__(self, name): if name in self.dict: return self.dict[name][1] return None def __setitem__(self, name, value): if name in self.dict: val = self.dict[name] else: val = (None, None) self.dict[name] = (val[0], value) # we might need to expose the comments... def info(self, name): if name in self.dict: return self.dict[name][0] return "" # a superclass for the ConfigFile that also handles runtime-only # config values class Config: def __init__(self, filename = None): self.stored = ConfigFile() self.stored.update(Defaults) if filename: self.stored.load(filename) self.runtime = {} # classic dictionary interface: we prefer values from the runtime # dictionary over the ones from the stored config def __contains__(self, name): if name in self.runtime: return True if name in self.stored: return True return False def has_key(self, name): # obsoleted, left for compatibility with older python return name in self def keys(self): ret = list(self.runtime.keys()) for k in self.stored.keys(): if k not in ret: ret.append(k) return ret def values(self): ret = [] for k in self.keys(): ret.append(self.__getitem__(k)) return ret def items(self): ret = [] for k in self.keys(): ret.append((k, self.__getitem__(k))) return ret def __len__(self): return len(self.keys()) def __setitem__(self, name, value): self.runtime[name] = value # we return None when nothing is found instead of raising and exception def __getitem__(self, name): if name in self.runtime: return self.runtime[name] if name in self.stored: return self.stored[name] return None # These function expose access to the peristent storage for # updates and saves def info(self, name): # retrieve comments return self.stored.info(name) def save(self): self.stored.save() def load(self, filename): self.stored.load(filename) # make sure the runtime cache is not polluted for k in self.stored.keys(): if not k in self.runtime: continue # allow this one to pass through del self.runtime[k] # save straight in the persistent storage def set(self, name, value): self.stored[name] = value # clean up the runtime cache if name in self.runtime: del self.runtime[name] def getProxySetting(): """ returns proxy string in format hostname:port hostname is converted to Punycode (RFC3492) if needed """ cfg = initUp2dateConfig() proxy = None proxyHost = cfg["httpProxy"] if proxyHost: if proxyHost[:7] == "http://": proxyHost = proxyHost[7:] parts = proxyHost.split(':') parts[0] = str(idn_ascii_to_puny(parts[0])) proxy = ':'.join(parts) return proxy def convert_url_to_puny(url): """ returns url where hostname is converted to Punycode (RFC3492) """ s = urlsplit(url) return sstr(urlunsplit((s[0], ustr(idn_ascii_to_puny(s[1])), s[2], s[3], s[4]))) def convert_url_from_puny(url): """ returns url where hostname is converted from Punycode (RFC3492). Returns unicode string. """ s = urlsplit(url) return ustr(urlunsplit((s[0], idn_puny_to_unicode(s[1]), s[2], s[3], s[4]))) def getServerlURLFromMirror(): url = cfg['mirrorURL'] if url is None: url = "https://repo.cloudlinux.com/cloudlinux/mirrorlists/cln-mirrors" if url.startswith("file://"): with open(url.replace("file://", ""), "r") as mirrorlist: mirrors = map(str.strip, mirrorlist.readlines()) return [convert_url_to_puny(mirror) for mirror in mirrors if mirror] request = requests.get(url) return [convert_url_to_puny(mirror) for mirror in request.text.split('\n') if mirror] def getServerlURL(): """ return list of serverURL from config Note: in config may be one value or more values, but this function always return list """ cfg = initUp2dateConfig() # serverURL may be a list in the config file, so by default, grab the # first element. if type(cfg['serverURL']) == type([]): return [convert_url_to_puny(i) for i in cfg['serverURL']] else: return [convert_url_to_puny(cfg['serverURL'])] def setServerURL(serverURL): """ Set serverURL in config """ cfg = initUp2dateConfig() cfg.set('serverURL', serverURL) def setSSLCACert(sslCACert): """ Set sslCACert in config """ cfg = initUp2dateConfig() cfg.set('sslCACert', sslCACert) def initUp2dateConfig(cfg_file = "/etc/sysconfig/rhn/up2date"): """This function is the right way to get at the up2date config.""" global cfg try: cfg except NameError: cfg = None if cfg == None: cfg = Config(cfg_file) cfg["isatty"] = False if sys.stdout.isatty(): cfg["isatty"] = True return cfg
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