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#
#-*- coding:utf-8 -*-
"""
Gentoo-keys - seedhandler.py
Seed handling interface module
@copyright: 2012 by Brian Dolbec <dol-sen@gentoo.org>
@license: GNU GPL2, see COPYING for details.
"""
import os
import re
from json import load
from gkeys.config import GKEY, MAPSEEDS
from gkeys.seed import Seeds
from gkeys.fileops import ensure_dirs
class SeedHandler(object):
def __init__(self, logger, config):
self.config = config
self.logger = logger
self.fingerprint_re = re.compile('[0-9A-Fa-f]{40}')
self.finerprint_re2 = re.compile('[0-9A-Fa-f]{4}( [0-9A-Fa-f]{4}){9}')
def new(self, args, checkgkey=False):
newgkey = self.build_gkeydict(args)
if checkgkey:
newgkey, is_good = self.check_gkey(newgkey)
if is_good:
newgkey = GKEY(**newgkey)
self.logger.debug("SeedHandler: new; new gkey: %s" % str(newgkey))
else:
return None
else:
newgkey = GKEY(**newgkey)
self.logger.debug("SeedHandler: new; NON-checked new gkey: %s" % str(newgkey))
return newgkey
@staticmethod
def build_gkeydict(args):
keyinfo = {}
for attr in GKEY._fields + ('keyid',):
try:
value = getattr(args, attr)
if attr == 'name' and value:
value = " ".join(value)
if value:
keyinfo[attr] = value
except AttributeError:
pass
return keyinfo
def load_seeds(self, seedfile=None, filepath=None):
'''Load seed file
@param seeds: string of the short name seed file
@param seedfile: string filepath of the file to load
@return Seeds class instance of the file loaded
'''
if not seedfile and not filename:
self.logger.error("SeedHandler: load_seeds; no filename to load: "
"setting = %s. Please use the -S or -F option to indicate: which seed "
"file to use." % seedfile)
return False
if seedfile:
filepath = self.config.get_key('seeds', seedfile)
elif not filepath:
self.logger.error("SeedHandler: load_seeds; No filepath to load")
self.logger.debug("SeedHandler: load_seeds; seeds filepath to load: "
"%s" % filepath)
seeds = Seeds(config=self.config)
seeds.load(filepath)
return seeds
def load_category(self, category, nicks=None):
'''Loads the designated key directories
@param category: string
@param nicks: list of string nick ids to load
@return Seeds class object
'''
seeds = Seeds(config=self.config)
if category:
catdir = self.config.get_key(category + "-category")
else:
self.logger.debug("SeedHandler: load_category; Error invalid category: %s." % (str(category)))
return seeds
self.logger.debug("SeedHandler: load_category; catdir = %s" % catdir)
try:
if not nicks:
nicks = os.listdir(catdir)
for nick in nicks:
seed_path = os.path.join(catdir, nick)
gkey_path = os.path.join(seed_path, 'gkey.seeds')
seed = None
try:
with open(gkey_path, 'r') as fileseed:
seed = load(fileseed)
except IOError as error:
self.logger.debug("SeedHandler: load_category; IOError loading seed file %s." % gkey_path)
self.logger.debug("Error was: %s" % str(error))
if seed:
for nick in sorted(seed):
key = seed[nick]
seeds.add(nick, GKEY(**key))
except OSError as error:
self.logger.debug("SeedHandler: load_category; OSError for %s" % catdir)
self.logger.debug("Error was: %s" % str(error))
return seeds
def fetch_seeds(self, seeds, args, verified_dl=None):
'''Fetch new seed files
@param seeds: list of seed nicks to download
@param verified_dl: Function pointer to the Actions.verify()
instance needed to do the download and verification
'''
http_check = re.compile(r'^(http|https)://')
urls = []
messages = []
try:
for seed in [seeds]:
seedurl = self.config.get_key('seedurls', MAPSEEDS[seed])
seedpath = self.config.get_key('%s-seedfile' % seed)
if http_check.match(seedurl):
urls.extend([(seedurl, seedpath)])
else:
self.logger.info("Wrong seed file URLs... Switching to default URLs.")
urls.extend([(self.config['seedurls'][MAPSEEDS[seed]], seedpath)])
except KeyError:
for key, value in list(MAPSEEDS.items()):
seedpath = self.config.get_key('%s-seedfile' % key)
urls.extend([(self.config['seedurls'][value], seedpath)])
succeeded = []
seedsdir = self.config.get_key('seedsdir')
mode = int(self.config.get_key('permissions', 'directories'),0)
ensure_dirs(seedsdir, mode=mode)
for (url, filepath) in urls:
args.category = 'rel'
args.filename = url
args.signature = None
args.timestamp = True
args.destination = filepath
verified, messages_ = verified_dl(args)
succeeded.append(verified)
messages.append(messages_)
return (succeeded, messages)
def check_gkey(self, args):
# assume it's good until an error is found
is_good = True
try:
args['keydir'] = args.get('keydir', args['nick'])
fprs = []
if args['fingerprint']:
for fpr in args['fingerprint']:
is_good, fingerprint = self._check_fingerprint_integrity(fpr)
if is_good:
fprs.append(fingerprint)
else:
self.logger.error('Bad fingerprint from command line args: %s' % fpr)
if is_good:
args['fingerprint'] = fprs
except KeyError:
self.logger.error('GPG fingerprint not found.')
is_good = False
if not is_good:
self.logger.error('A valid fingerprint '
'was not found for %s' % args['name'])
return args, is_good
def _check_fingerprint_integrity(self, fpr):
# assume it's good unti an error is found
is_good = True
fingerprint = fpr.replace(" ", "")
# check fingerprint integrity
if len(fingerprint) != 40:
self.logger.error(' GPGKey incorrect fingerprint ' +
'length (%s) for fingerprint: %s' % (len(fingerprint), fingerprint))
is_good = False
if not self.fingerprint_re.match(fingerprint):
self.logger.error(' GPGKey: Non hexadecimal digits in ' + 'fingerprint for fingerprint: ' + fingerprint)
is_good = False
return is_good, fingerprint
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