86
86
import xml.dom.minidom
89
# Try to find the value of SO_BINDTODEVICE:
91
# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
92
# newer, and it is also the most natural place for it:
90
93
SO_BINDTODEVICE = socket.SO_BINDTODEVICE
91
94
except AttributeError:
96
# This is where SO_BINDTODEVICE was up to and including Python
93
98
from IN import SO_BINDTODEVICE
94
99
except ImportError:
95
SO_BINDTODEVICE = None
100
# In Python 2.7 it seems to have been removed entirely.
101
# Try running the C preprocessor:
103
cc = subprocess.Popen(["cc", "--language=c", "-E",
105
stdin=subprocess.PIPE,
106
stdout=subprocess.PIPE)
107
stdout = cc.communicate(
108
"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
109
SO_BINDTODEVICE = int(stdout.splitlines()[-1])
110
except (OSError, ValueError, IndexError):
112
SO_BINDTODEVICE = None
97
114
if sys.version_info.major == 2:
2438
2455
bind to an address or port if they were not specified."""
2439
2456
if self.interface is not None:
2440
2457
if SO_BINDTODEVICE is None:
2441
logger.error("SO_BINDTODEVICE does not exist;"
2442
" cannot bind to interface %s",
2446
self.socket.setsockopt(
2447
socket.SOL_SOCKET, SO_BINDTODEVICE,
2448
(self.interface + "\0").encode("utf-8"))
2449
except socket.error as error:
2450
if error.errno == errno.EPERM:
2451
logger.error("No permission to bind to"
2452
" interface %s", self.interface)
2453
elif error.errno == errno.ENOPROTOOPT:
2454
logger.error("SO_BINDTODEVICE not available;"
2455
" cannot bind to interface %s",
2457
elif error.errno == errno.ENODEV:
2458
logger.error("Interface %s does not exist,"
2459
" cannot bind", self.interface)
2458
# Fall back to a hard-coded value which seems to be
2460
logger.warning("SO_BINDTODEVICE not found, trying 25")
2461
SO_BINDTODEVICE = 25
2463
self.socket.setsockopt(
2464
socket.SOL_SOCKET, SO_BINDTODEVICE,
2465
(self.interface + "\0").encode("utf-8"))
2466
except socket.error as error:
2467
if error.errno == errno.EPERM:
2468
logger.error("No permission to bind to"
2469
" interface %s", self.interface)
2470
elif error.errno == errno.ENOPROTOOPT:
2471
logger.error("SO_BINDTODEVICE not available;"
2472
" cannot bind to interface %s",
2474
elif error.errno == errno.ENODEV:
2475
logger.error("Interface %s does not exist,"
2476
" cannot bind", self.interface)
2462
2479
# Only bind(2) the socket if we really need to.
2463
2480
if self.server_address[0] or self.server_address[1]:
2464
2481
if not self.server_address[0]: