### # Copyright (c) 2002-2005, Jeremiah Fincher # Copyright (c) 2011, 2013, James McCoy # All rights reserved. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions are met: # # * Redistributions of source code must retain the above copyright notice, # this list of conditions, and the following disclaimer. # * Redistributions in binary form must reproduce the above copyright notice, # this list of conditions, and the following disclaimer in the # documentation and/or other materials provided with the distribution. # * Neither the name of the author of this software nor the name of # contributors to this software may be used to endorse or promote products # derived from this software without specific prior written consent. # # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE # POSSIBILITY OF SUCH DAMAGE. ### """ Simple utility modules. """ import re import socket from .web import _ipAddr, _domain emailRe = re.compile(r"^(\w&.+-]+!)*[\w&.+-]+@(%s|%s)$" % (_domain, _ipAddr), re.I) def getAddressFromHostname(host, attempt=0): addrinfo = socket.getaddrinfo(host, None) addresses = [] for (family, socktype, proto, canonname, sockaddr) in addrinfo: if sockaddr[0] not in addresses: addresses.append(sockaddr[0]) return addresses[attempt % len(addresses)] def getSocket(host, socks_proxy=None, vhost=None, vhostv6=None): """Returns a socket of the correct AF_INET type (v4 or v6) in order to communicate with host. """ if not socks_proxy: addrinfo = socket.getaddrinfo(host, None) host = addrinfo[0][4][0] if socks_proxy: import socks s = socks.socksocket() hostname, port = socks_proxy.rsplit(':', 1) s.setproxy(socks.PROXY_TYPE_SOCKS5, hostname, int(port), rdns=True) return s import supybot.conf as conf if isIPV4(host): s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) if not vhost: vhost = conf.supybot.protocols.irc.vhost() if vhost: s.bind((vhost, 0)) return s elif isIPV6(host): s = socket.socket(socket.AF_INET6, socket.SOCK_STREAM) if not vhostv6: vhostv6 = conf.supybot.protocols.irc.vhostv6() if vhostv6: s.bind((vhostv6, 0)) return s else: raise socket.error('Something wonky happened.') def isIP(s): """Returns whether or not a given string is an IP address. >>> isIP('255.255.255.255') 1 >>> isIP('::1') 0 """ return isIPV4(s) or isIPV6(s) def isIPV4(s): """Returns whether or not a given string is an IPV4 address. >>> isIPV4('255.255.255.255') 1 >>> isIPV4('abc.abc.abc.abc') 0 """ try: return bool(socket.inet_aton(str(s))) except socket.error: return False def bruteIsIPV6(s): if s.count('::') <= 1: L = s.split(':') if len(L) <= 8: for x in L: if x: try: int(x, 16) except ValueError: return False return True return False def isIPV6(s): """Returns whether or not a given string is an IPV6 address.""" try: if hasattr(socket, 'inet_pton'): return bool(socket.inet_pton(socket.AF_INET6, s)) else: return bruteIsIPV6(s) except socket.error: try: socket.inet_pton(socket.AF_INET6, '::') except socket.error: # We gotta fake it. return bruteIsIPV6(s) return False # vim:set shiftwidth=4 softtabstop=4 expandtab textwidth=79: