From: Daira Hopwood Date: Tue, 28 May 2013 18:52:19 +0000 (+0100) Subject: iputil.py: refactor address-finding code to treat all Unices the same. X-Git-Tag: allmydata-tahoe-1.10.1a1~236 X-Git-Url: https://git.rkrishnan.org/listings/install-details.html?a=commitdiff_plain;h=8e31d66cd0b;p=tahoe-lafs%2Ftahoe-lafs.git iputil.py: refactor address-finding code to treat all Unices the same. refs #1988, #982, #1064, #1536, #1935 fixes #898, #1707, #1918 Signed-off-by: Daira Hopwood --- diff --git a/src/allmydata/util/iputil.py b/src/allmydata/util/iputil.py index 1c8ba3ed..c612ffcf 100644 --- a/src/allmydata/util/iputil.py +++ b/src/allmydata/util/iputil.py @@ -134,96 +134,48 @@ def get_local_ip_for(target): port.stopListening() # note, this returns a Deferred return localip -# k: result of sys.platform, v: which kind of IP configuration reader we use -_platform_map = { - "linux-i386": "linux", # redhat - "linux-ppc": "linux", # redhat - "linux2": "linux", # debian - "linux3": "linux", # debian - "win32": "win32", - "irix6-n32": "irix", - "irix6-n64": "irix", - "irix6": "irix", - "openbsd2": "bsd", - "openbsd3": "bsd", - "openbsd4": "bsd", - "openbsd5": "bsd", - "darwin": "bsd", # Mac OS X - "freebsd4": "bsd", - "freebsd5": "bsd", - "freebsd6": "bsd", - "freebsd7": "bsd", - "freebsd8": "bsd", - "freebsd9": "bsd", - "netbsd1": "bsd", - "netbsd2": "bsd", - "netbsd3": "bsd", - "netbsd4": "bsd", - "netbsd5": "bsd", - "netbsd6": "bsd", - "sunos5": "sunos", - "cygwin": "cygwin", - } - -class UnsupportedPlatformError(Exception): - pass # Wow, I'm really amazed at home much mileage we've gotten out of calling # the external route.exe program on windows... It appears to work on all # versions so far. Still, the real system calls would much be preferred... # ... thus wrote Greg Smith in time immemorial... -_win32_path = 'route.exe' -_win32_args = ('print',) -_win32_re = re.compile('^\s*\d+\.\d+\.\d+\.\d+\s.+\s(?P
\d+\.\d+\.\d+\.\d+)\s+(?P\d+)\s*$', flags=re.M|re.I|re.S) +_win32_re = re.compile(r'^\s*\d+\.\d+\.\d+\.\d+\s.+\s(?P
\d+\.\d+\.\d+\.\d+)\s+(?P\d+)\s*$', flags=re.M|re.I|re.S) +_win32_commands = (('route.exe', ('print',), _win32_re),) -# These work in Redhat 6.x and Debian 2.2 potato -_linux_path = '/sbin/ifconfig' -_linux_re = re.compile('^\s*inet [a-zA-Z]*:?(?P
\d+\.\d+\.\d+\.\d+)\s.+$', flags=re.M|re.I|re.S) +# These work in most Unices. +_addr_re = re.compile(r'^\s*inet [a-zA-Z]*:?(?P
\d+\.\d+\.\d+\.\d+)[\s/].+$', flags=re.M|re.I|re.S) +_unix_commands = (('/bin/ip addr', (), _addr_re), + ('/sbin/ifconfig', ('-a',), _addr_re), + ('/usr/sbin/ifconfig', ('-a',), _addr_re), + ('/usr/etc/ifconfig', ('-a',), _addr_re), + ('ifconfig', ('-a',), _addr_re), + ('/sbin/ifconfig', (), _addr_re), + ) -# NetBSD 1.4 (submitted by Rhialto), Darwin, Mac OS X -_netbsd_path = '/sbin/ifconfig' -_netbsd_args = ('-a',) -_netbsd_re = re.compile('^\s+inet [a-zA-Z]*:?(?P
\d+\.\d+\.\d+\.\d+)\s.+$', flags=re.M|re.I|re.S) - -# Irix 6.5 -_irix_path = '/usr/etc/ifconfig' - -# Solaris 2.x -_sunos_path = '/usr/sbin/ifconfig' - - -# k: platform string as provided in the value of _platform_map -# v: tuple of (path_to_tool, args, regex,) -_tool_map = { - "linux": (_linux_path, (), _linux_re,), - "win32": (_win32_path, _win32_args, _win32_re,), - "cygwin": (_win32_path, _win32_args, _win32_re,), - "bsd": (_netbsd_path, _netbsd_args, _netbsd_re,), - "irix": (_irix_path, _netbsd_args, _netbsd_re,), - "sunos": (_sunos_path, _netbsd_args, _netbsd_re,), - } def _find_addresses_via_config(): return threads.deferToThread(_synchronously_find_addresses_via_config) def _synchronously_find_addresses_via_config(): - # originally by Greg Smith, hacked by Zooko to conform to Brian's API + # originally by Greg Smith, hacked by Zooko and then Daira - platform = _platform_map.get(sys.platform) - if not platform: - raise UnsupportedPlatformError(sys.platform) + # We don't reach here for cygwin. + if sys.platform == 'win32': + commands = _win32_commands + else: + commands = _unix_commands - (pathtotool, args, regex,) = _tool_map[platform] + for (pathtotool, args, regex) in commands: + # If pathtotool is a fully qualified path then we just try that. + # If it is merely an executable name then we use Twisted's + # "which()" utility and try each executable in turn until one + # gives us something that resembles a dotted-quad IPv4 address. - # If pathtotool is a fully qualified path then we just try that. - # If it is merely an executable name then we use Twisted's - # "which()" utility and try each executable in turn until one - # gives us something that resembles a dotted-quad IPv4 address. + if os.path.isabs(pathtotool): + exes_to_try = [pathtotool] + else: + exes_to_try = which(pathtotool) - if os.path.isabs(pathtotool): - return _query(pathtotool, args, regex) - else: - exes_to_try = which(pathtotool) for exe in exes_to_try: try: addresses = _query(exe, args, regex) @@ -231,7 +183,8 @@ def _synchronously_find_addresses_via_config(): addresses = [] if addresses: return addresses - return [] + + return [] def _query(path, args, regex): env = {'LANG': 'en_US.UTF-8'}