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| Current File : //proc/thread-self/root/lib64/python2.7/netrc.py |
"""An object-oriented interface to .netrc files."""
# Module and documentation by Eric S. Raymond, 21 Dec 1998
import os, shlex
__all__ = ["netrc", "NetrcParseError"]
class NetrcParseError(Exception):
"""Exception raised on syntax errors in the .netrc file."""
def __init__(self, msg, filename=None, lineno=None):
self.filename = filename
self.lineno = lineno
self.msg = msg
Exception.__init__(self, msg)
def __str__(self):
return "%s (%s, line %s)" % (self.msg, self.filename, self.lineno)
class netrc:
def __init__(self, file=None):
if file is None:
try:
file = os.path.join(os.environ['HOME'], ".netrc")
except KeyError:
raise IOError("Could not find .netrc: $HOME is not set")
self.hosts = {}
self.macros = {}
with open(file) as fp:
self._parse(file, fp)
def _parse(self, file, fp):
lexer = shlex.shlex(fp)
lexer.wordchars += r"""!"#$%&'()*+,-./:;<=>?@[\]^_`{|}~"""
lexer.commenters = lexer.commenters.replace('#', '')
while 1:
# Look for a machine, default, or macdef top-level keyword
toplevel = tt = lexer.get_token()
if not tt:
break
elif tt[0] == '#':
# seek to beginning of comment, in case reading the token put
# us on a new line, and then skip the rest of the line.
pos = len(tt) + 1
lexer.instream.seek(-pos, 1)
lexer.instream.readline()
continue
elif tt == 'machine':
entryname = lexer.get_token()
elif tt == 'default':
entryname = 'default'
elif tt == 'macdef': # Just skip to end of macdefs
entryname = lexer.get_token()
self.macros[entryname] = []
lexer.whitespace = ' \t'
while 1:
line = lexer.instream.readline()
if not line or line == '\012':
lexer.whitespace = ' \t\r\n'
break
self.macros[entryname].append(line)
continue
else:
raise NetrcParseError(
"bad toplevel token %r" % tt, file, lexer.lineno)
# We're looking at start of an entry for a named machine or default.
login = ''
account = password = None
self.hosts[entryname] = {}
while 1:
tt = lexer.get_token()
if (tt.startswith('#') or
tt in {'', 'machine', 'default', 'macdef'}):
if password:
self.hosts[entryname] = (login, account, password)
lexer.push_token(tt)
break
else:
raise NetrcParseError(
"malformed %s entry %s terminated by %s"
% (toplevel, entryname, repr(tt)),
file, lexer.lineno)
elif tt == 'login' or tt == 'user':
login = lexer.get_token()
elif tt == 'account':
account = lexer.get_token()
elif tt == 'password':
password = lexer.get_token()
else:
raise NetrcParseError("bad follower token %r" % tt,
file, lexer.lineno)
def authenticators(self, host):
"""Return a (user, account, password) tuple for given host."""
if host in self.hosts:
return self.hosts[host]
elif 'default' in self.hosts:
return self.hosts['default']
else:
return None
def __repr__(self):
"""Dump the class data in the format of a .netrc file."""
rep = ""
for host in self.hosts.keys():
attrs = self.hosts[host]
rep = rep + "machine "+ host + "\n\tlogin " + repr(attrs[0]) + "\n"
if attrs[1]:
rep = rep + "account " + repr(attrs[1])
rep = rep + "\tpassword " + repr(attrs[2]) + "\n"
for macro in self.macros.keys():
rep = rep + "macdef " + macro + "\n"
for line in self.macros[macro]:
rep = rep + line
rep = rep + "\n"
return rep
if __name__ == '__main__':
print netrc()