221 lines
6.7 KiB
Python
221 lines
6.7 KiB
Python
import json, ast
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import os, ast
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from util import user_dir, print_error
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from version import ELECTRUM_VERSION, SEED_VERSION
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class SimpleConfig:
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"""
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The SimpleConfig class is responsible for handling operations involving
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configuration files. The constructor reads and stores the system and
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user configurations from electrum.conf into seperate dictionaries within
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a SimpleConfig instance then reads the wallet file.
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"""
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def __init__(self, options={}):
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# system conf, readonly
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self.system_config = {}
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if options.get('portable') == False:
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self.read_system_config()
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# user conf, writeable
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self.user_dir = user_dir()
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self.user_config = {}
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if options.get('portable') == False:
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self.read_user_config()
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# command-line options
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self.options_config = options
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self.wallet_config = {}
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self.wallet_file_exists = False
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self.init_path(self.options_config.get('wallet_path'))
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print_error( "path", self.path )
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if self.path:
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self.read_wallet_config(self.path)
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# portable wallet: use the same directory for wallet and headers file
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if options.get('portable'):
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self.wallet_config['blockchain_headers_path'] = os.path.dirname(self.path)
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def set_key(self, key, value, save = False):
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# find where a setting comes from and save it there
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if self.options_config.get(key) is not None:
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print "Warning: not changing '%s' because it was passed as a command-line option"%key
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return
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elif self.user_config.get(key) is not None:
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self.user_config[key] = value
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if save: self.save_user_config()
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elif self.system_config.get(key) is not None:
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if str(self.system_config[key]) != str(value):
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print "Warning: not changing '%s' because it was set in the system configuration"%key
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elif self.wallet_config.get(key) is not None:
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self.wallet_config[key] = value
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if save: self.save_wallet_config()
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else:
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# add key to wallet config
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self.wallet_config[key] = value
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if save: self.save_wallet_config()
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def get(self, key, default=None):
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"""Retrieve the filepath of the configuration file specified in the 'key' parameter."""
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# 1. command-line options always override everything
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if self.options_config.has_key(key) and self.options_config.get(key) is not None:
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out = self.options_config.get(key)
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# 2. user configuration
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elif self.user_config.has_key(key):
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out = self.user_config.get(key)
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# 2. system configuration
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elif self.system_config.has_key(key):
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out = self.system_config.get(key)
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# 3. use the wallet file config
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else:
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out = self.wallet_config.get(key)
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if out is None and default is not None:
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out = default
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# try to fix the type
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if default is not None and type(out) != type(default):
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import ast
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try:
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out = ast.literal_eval(out)
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except:
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print "type error for '%s': using default value"%key
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out = default
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return out
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def is_modifiable(self, key):
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"""Check if the config file is modifiable."""
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if self.options_config.has_key(key):
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return False
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elif self.user_config.has_key(key):
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return True
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elif self.system_config.has_key(key):
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return False
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else:
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return True
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def read_system_config(self):
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"""Parse and store the system config settings in electrum.conf into system_config[]."""
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name = '/etc/electrum.conf'
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if os.path.exists(name):
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try:
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import ConfigParser
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except ImportError:
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print "cannot parse electrum.conf. please install ConfigParser"
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return
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p = ConfigParser.ConfigParser()
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p.read(name)
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try:
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for k, v in p.items('client'):
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self.system_config[k] = v
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except ConfigParser.NoSectionError:
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pass
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def read_user_config(self):
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"""Parse and store the user config settings in electrum.conf into user_config[]."""
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if not self.user_dir: return
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name = os.path.join( self.user_dir, 'electrum.conf')
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if os.path.exists(name):
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try:
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import ConfigParser
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except ImportError:
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print "cannot parse electrum.conf. please install ConfigParser"
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return
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p = ConfigParser.ConfigParser()
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p.read(name)
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try:
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for k, v in p.items('client'):
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self.user_config[k] = v
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except ConfigParser.NoSectionError:
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pass
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def init_path(self, path):
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"""Set the path of the wallet."""
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if not path:
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path = self.get('default_wallet_path')
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if path is not None:
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self.path = path
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return
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# Look for wallet file in the default data directory.
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# Make wallet directory if it does not yet exist.
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if not os.path.exists(self.user_dir):
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os.mkdir(self.user_dir)
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self.path = os.path.join(self.user_dir, "electrum.dat")
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def save_user_config(self):
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if not self.user_dir: return
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import ConfigParser
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config = ConfigParser.RawConfigParser()
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config.add_section('client')
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for k,v in self.user_config.items():
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config.set('client', k, v)
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with open( os.path.join( self.user_dir, 'electrum.conf'), 'wb') as configfile:
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config.write(configfile)
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def read_wallet_config(self, path):
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"""Read the contents of the wallet file."""
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try:
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with open(self.path, "r") as f:
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data = f.read()
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except IOError:
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return
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try:
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d = ast.literal_eval( data ) #parse raw data from reading wallet file
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except:
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raise IOError("Cannot read wallet file.")
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self.wallet_config = d
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self.wallet_file_exists = True
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def save(self):
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self.save_wallet_config()
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def save_wallet_config(self):
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# prevent the creation of incomplete wallets
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if self.wallet_config.get('master_public_key') is None:
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return
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s = repr(self.wallet_config)
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f = open(self.path,"w")
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f.write( s )
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f.close()
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if self.get('gui') != 'android':
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import stat
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os.chmod(self.path,stat.S_IREAD | stat.S_IWRITE)
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