PyBitmessage-2021-04-27/src/bmconfigparser.py

169 lines
5.5 KiB
Python

"""
BMConfigParser class definition and default configuration settings
"""
import ConfigParser
import shutil
import os
from datetime import datetime
import state
from singleton import Singleton
BMConfigDefaults = {
"bitmessagesettings": {
"maxaddrperstreamsend": 500,
"maxbootstrapconnections": 20,
"maxdownloadrate": 0,
"maxoutboundconnections": 8,
"maxtotalconnections": 200,
"maxuploadrate": 0,
"apiinterface": "127.0.0.1",
"apiport": 8442
},
"threads": {
"receive": 3,
},
"network": {
"bind": '',
"dandelion": 90,
},
"inventory": {
"storage": "sqlite",
"acceptmismatch": False,
},
"knownnodes": {
"maxnodes": 20000,
},
"zlib": {
'maxsize': 1048576
}
}
@Singleton
class BMConfigParser(ConfigParser.SafeConfigParser):
"""
Singleton class inherited from :class:`ConfigParser.SafeConfigParser`
with additional methods specific to bitmessage config.
"""
_temp = {}
def set(self, section, option, value=None):
if self._optcre is self.OPTCRE or value:
if not isinstance(value, basestring):
raise TypeError("option values must be strings")
if not self.validate(section, option, value):
raise ValueError("Invalid value %s" % value)
return ConfigParser.ConfigParser.set(self, section, option, value)
def get(self, section, option, raw=False, variables=None):
try:
if section == "bitmessagesettings" and option == "timeformat":
return ConfigParser.ConfigParser.get(
self, section, option, raw, variables)
try:
return self._temp[section][option]
except KeyError:
pass
return ConfigParser.ConfigParser.get(
self, section, option, True, variables)
except ConfigParser.InterpolationError:
return ConfigParser.ConfigParser.get(
self, section, option, True, variables)
except (ConfigParser.NoSectionError, ConfigParser.NoOptionError) as e:
try:
return BMConfigDefaults[section][option]
except (KeyError, ValueError, AttributeError):
raise e
def setTemp(self, section, option, value=None):
"""Temporary set option to value, not saving."""
try:
self._temp[section][option] = value
except KeyError:
self._temp[section] = {option: value}
def safeGetBoolean(self, section, field):
try:
return self.getboolean(section, field)
except (ConfigParser.NoSectionError, ConfigParser.NoOptionError,
ValueError, AttributeError):
return False
def safeGetInt(self, section, field, default=0):
try:
return self.getint(section, field)
except (ConfigParser.NoSectionError, ConfigParser.NoOptionError,
ValueError, AttributeError):
return default
def safeGet(self, section, option, default=None):
try:
return self.get(section, option)
except (ConfigParser.NoSectionError, ConfigParser.NoOptionError,
ValueError, AttributeError):
return default
def items(self, section, raw=False, variables=None):
return ConfigParser.ConfigParser.items(self, section, True, variables)
def addresses(self):
return filter(
lambda x: x.startswith('BM-'), BMConfigParser().sections())
def read(self, filenames):
ConfigParser.ConfigParser.read(self, filenames)
for section in self.sections():
for option in self.options(section):
try:
if not self.validate(
section, option,
ConfigParser.ConfigParser.get(self, section, option)
):
try:
newVal = BMConfigDefaults[section][option]
except KeyError:
continue
ConfigParser.ConfigParser.set(
self, section, option, newVal)
except ConfigParser.InterpolationError:
continue
def save(self):
fileName = os.path.join(state.appdata, 'keys.dat')
fileNameBak = '.'.join([
fileName, datetime.now().strftime("%Y%j%H%M%S%f"), 'bak'])
# create a backup copy to prevent the accidental loss due to
# the disk write failure
try:
shutil.copyfile(fileName, fileNameBak)
# The backup succeeded.
fileNameExisted = True
except (IOError, Exception):
# The backup failed. This can happen if the file
# didn't exist before.
fileNameExisted = False
# write the file
with open(fileName, 'wb') as configfile:
self.write(configfile)
# delete the backup
if fileNameExisted:
os.remove(fileNameBak)
def validate(self, section, option, value):
try:
return getattr(self, 'validate_%s_%s' % (section, option))(value)
except AttributeError:
return True
def validate_bitmessagesettings_maxoutboundconnections(self, value):
try:
value = int(value)
except ValueError:
return False
if value < 0 or value > 8:
return False
return True