+""" Common housekeeping for all daemons """
+
+from configparser import ConfigParser, SectionProxy
+from getopt import getopt
+from logging import Formatter, getLogger, Logger, StreamHandler, DEBUG, INFO
+from logging.handlers import SysLogHandler
+from pkg_resources import get_distribution, DistributionNotFound
+from sys import argv, stderr, stdout
+from typing import Any, Dict, List, Optional, Tuple, Union
+
+CONF = "/etc/loctrkd.conf"
+PORT = 4303
+DBFN = "/var/lib/loctrkd/loctrkd.sqlite"
+
+try:
+ version = get_distribution("loctrkd").version
+except DistributionNotFound:
+ version = "<local>"
+
+
+def init(
+ log: Logger, opts: Optional[List[Tuple[str, str]]] = None
+) -> ConfigParser:
+ if opts is None:
+ opts, _ = getopt(argv[1:], "c:d")
+ dopts = dict(opts)
+ conf = readconfig(dopts["-c"] if "-c" in dopts else CONF)
+ log.setLevel(DEBUG if "-d" in dopts else INFO)
+ if stdout.isatty():
+ fhdl = StreamHandler(stderr)
+ fhdl.setFormatter(
+ Formatter("%(asctime)s - %(levelname)s - %(message)s")
+ )
+ log.addHandler(fhdl)
+ log.debug("%s starting with options: %s", version, dopts)
+ else:
+ lhdl = SysLogHandler(address="/dev/log")
+ lhdl.setFormatter(
+ Formatter("%(name)s[%(process)d]: %(levelname)s - %(message)s")
+ )
+ log.addHandler(lhdl)
+ log.info("%s starting with options: %s", version, dopts)
+ return conf
+
+
+def readconfig(fname: str) -> ConfigParser:
+ config = ConfigParser()
+ config["collector"] = {
+ "port": str(PORT),
+ }
+ config["storage"] = {
+ "dbfn": DBFN,
+ }
+ config["termconfig"] = {}
+ config.read(fname)
+ return config
+
+
+def normconf(section: SectionProxy) -> Dict[str, Any]:
+ result: Dict[str, Any] = {}
+ for key, val in section.items():
+ vals = val.split("\n")
+ if len(vals) > 1 and vals[0] == "":
+ vals = vals[1:]
+ lst: List[Union[str, int]] = []
+ for el in vals:
+ try:
+ lst.append(int(el, 0))
+ except ValueError:
+ if el[0] == '"' and el[-1] == '"':
+ el = el.strip('"').rstrip('"')
+ lst.append(el)
+ if not (
+ all([isinstance(x, int) for x in lst])
+ or all([isinstance(x, str) for x in lst])
+ ):
+ raise ValueError(
+ "Values of %s - %s are of different type", key, vals
+ )
+ if len(lst) == 1:
+ result[key] = lst[0]
+ else:
+ result[key] = lst
+ return result
+
+
+if __name__ == "__main__":
+ from sys import argv
+
+ def _print_config(conf: ConfigParser) -> None:
+ for section in conf.sections():
+ print("section", section)
+ for option in conf.options(section):
+ print(" ", option, conf[section][option])
+
+ conf = readconfig(argv[1])
+ _print_config(conf)
+ print(normconf(conf["termconfig"]))