-import json
+import ast
+import threading
import os
-from util import user_dir
-class SimpleConfig:
+from util import user_dir, print_error, print_msg
+SYSTEM_CONFIG_PATH = "/etc/electrum.conf"
- default_options = {"gui": "lite", "proxy": { "mode": "none", "host":"localhost", "port":"8080" },
- "winpos-qt": [100, 100, 840, 400], "winpos-lite": [4, 25, 351, 149], "history": False }
-
- def __init__(self):
- # Find electrum data folder
- self.config_folder = user_dir()
- # Read the file
- if os.path.exists(self.config_file_path()):
- self.load_config()
+config = None
+
+
+def get_config():
+ global config
+ return config
+
+
+def set_config(c):
+ global config
+ config = c
+
+
+class SimpleConfig(object):
+ """
+ The SimpleConfig class is responsible for handling operations involving
+ configuration files.
+
+ There are 3 different sources of possible configuration values:
+ 1. Command line options.
+ 2. User configuration (in the user's config directory)
+ 3. System configuration (in /etc/)
+ They are taken in order (1. overrides config options set in 2., that
+ override config set in 3.)
+ """
+ def __init__(self, options=None, read_system_config_function=None,
+ read_user_config_function=None, read_user_dir_function=None):
+
+ # This is the holder of actual options for the current user.
+ self.current_options = {}
+ # This lock needs to be acquired for updating and reading the config in
+ # a thread-safe way.
+ self.lock = threading.RLock()
+ # The path for the config directory. This is set later by init_path()
+ self.path = None
+
+ if options is None:
+ options = {} # Having a mutable as a default value is a bad idea.
+
+ # The following two functions are there for dependency injection when
+ # testing.
+ if read_system_config_function is None:
+ read_system_config_function = read_system_config
+ if read_user_config_function is None:
+ read_user_config_function = read_user_config
+ if read_user_dir_function is None:
+ self.user_dir = user_dir
else:
- self.config = self.default_options
- # Make config directory if it does not yet exist.
- if not os.path.exists(self.config_folder):
- os.mkdir(self.config_folder)
- self.save_config()
+ self.user_dir = read_user_dir_function
+
+ # Save the command-line keys to make sure we don't override them.
+ self.command_line_keys = options.keys()
+ # Save the system config keys to make sure we don't override them.
+ self.system_config_keys = []
+
+ if options.get('portable') is not True:
+ # system conf
+ system_config = read_system_config_function()
+ self.system_config_keys = system_config.keys()
+ self.current_options.update(system_config)
+
+ # update the current options with the command line options last (to
+ # override both others).
+ self.current_options.update(options)
+
+ # init path
+ self.init_path()
+
+ # user config.
+ self.user_config = read_user_config_function(self.path)
+ # The user config is overwritten by the current config!
+ self.user_config.update(self.current_options)
+ self.current_options = self.user_config
+
+ set_config(self) # Make a singleton instance of 'self'
+
+ def init_path(self):
+ # Read electrum path in the command line configuration
+ self.path = self.current_options.get('electrum_path')
+
+ # If not set, use the user's default data directory.
+ if self.path is None:
+ self.path = self.user_dir()
+
+ # Make directory if it does not yet exist.
+ if not os.path.exists(self.path):
+ os.mkdir(self.path)
+
+ print_error( "electrum directory", self.path)
def set_key(self, key, value, save = True):
- self.config[key] = value
- if save == True:
- self.save_config()
-
- def save_config(self):
- if not os.path.exists(self.config_folder):
- os.mkdir(self.config_folder)
- f = open(self.config_file_path(), "w+")
- f.write(json.dumps(self.config))
-
- def load_config(self):
- f = open(self.config_file_path(), "r")
- file_contents = f.read()
- if file_contents:
- user_config = json.loads(file_contents)
- for i in user_config:
- self.config[i] = user_config[i]
- else:
- self.config = self.default_options
- self.save_config()
-
- def config_file_path(self):
- return "%s" % (self.config_folder + "/config.json")
-
- def __init__(self):
- # Find electrum data folder
- self.config_folder = user_dir()
- self.config = self.default_options
- # Read the file
- if os.path.exists(self.config_file_path()):
- self.load_config()
- self.save_config()
+ if not self.is_modifiable(key):
+ print "Warning: not changing key '%s' because it is not modifiable" \
+ " (passed as command line option or defined in /etc/electrum.conf)"%key
+ return
+
+ with self.lock:
+ self.user_config[key] = value
+ self.current_options[key] = value
+ if save:
+ self.save_user_config()
+
+ return
+
+ def get(self, key, default=None):
+ out = None
+ with self.lock:
+ out = self.current_options.get(key, default)
+ return out
+
+ def is_modifiable(self, key):
+ if key in self.command_line_keys:
+ return False
+ if key in self.system_config_keys:
+ return False
+ return True
+
+ def save_user_config(self):
+ if not self.path: return
+
+ path = os.path.join(self.path, "config")
+ s = repr(self.user_config)
+ f = open(path,"w")
+ f.write( s )
+ f.close()
+ if self.get('gui') != 'android':
+ import stat
+ os.chmod(path, stat.S_IREAD | stat.S_IWRITE)
+
+def read_system_config(path=SYSTEM_CONFIG_PATH):
+ """Parse and return the system config settings in /etc/electrum.conf."""
+ result = {}
+ if os.path.exists(path):
+ try:
+ import ConfigParser
+ except ImportError:
+ print "cannot parse electrum.conf. please install ConfigParser"
+ return
+
+ p = ConfigParser.ConfigParser()
+ try:
+ p.read(path)
+ for k, v in p.items('client'):
+ result[k] = v
+ except (ConfigParser.NoSectionError, ConfigParser.MissingSectionHeaderError):
+ pass
+
+ return result
+
+def read_user_config(path):
+ """Parse and store the user config settings in electrum.conf into user_config[]."""
+ if not path: return {} # Return a dict, since we will call update() on it.
+
+ config_path = os.path.join(path, "config")
+ result = {}
+ if os.path.exists(config_path):
+ try:
+
+ with open(config_path, "r") as f:
+ data = f.read()
+ result = ast.literal_eval( data ) #parse raw data from reading wallet file
+
+ except Exception:
+ print_msg("Error: Cannot read config file.")
+ result = {}
+ if not type(result) is dict:
+ return {}
+ return result
git://git.novaco.in / electrum-nvc.git / blobdiff