def testNtoHErrors(self):
good_values = [ 1, 2, 3, 1L, 2L, 3L ]
bad_values = [ -1, -2, -3, -1L, -2L, -3L ]
for k in good_values:
socket.ntohl(k)
socket.ntohs(k)
socket.htonl(k)
socket.htons(k)
for k in bad_values:
self.assertRaises(OverflowError, socket.ntohl, k)
self.assertRaises(OverflowError, socket.ntohs, k)
self.assertRaises(OverflowError, socket.htonl, k)
self.assertRaises(OverflowError, socket.htons, k)
python类htonl()的实例源码
def int_to_ip(int_ip):
return socket.inet_ntoa(struct.pack('I',socket.htonl(int_ip)))
def int_to_ip(self, int_ip):
return socket.inet_ntoa(struct.pack('I', socket.htonl(int_ip)))
def _encrypt(self, text, _id):
text = to_binary(text)
tmp_list = []
tmp_list.append(to_binary(self.get_random_string()))
length = struct.pack(b'I', socket.htonl(len(text)))
tmp_list.append(length)
tmp_list.append(text)
tmp_list.append(to_binary(_id))
text = b''.join(tmp_list)
text = PKCS7Encoder.encode(text)
ciphertext = to_binary(self.cipher.encrypt(text))
return base64.b64encode(ciphertext)
def testNtoH(self):
# This just checks that htons etc. are their own inverse,
# when looking at the lower 16 or 32 bits.
sizes = {socket.htonl: 32, socket.ntohl: 32,
socket.htons: 16, socket.ntohs: 16}
for func, size in sizes.items():
mask = (1<<size) - 1
for i in (0, 1, 0xffff, ~0xffff, 2, 0x01234567, 0x76543210):
self.assertEqual(i & mask, func(func(i&mask)) & mask)
swapped = func(mask)
self.assertEqual(swapped & mask, mask)
self.assertRaises(OverflowError, func, 1<<34)
def testNtoHErrors(self):
good_values = [ 1, 2, 3, 1, 2, 3 ]
bad_values = [ -1, -2, -3, -1, -2, -3 ]
for k in good_values:
socket.ntohl(k)
socket.ntohs(k)
socket.htonl(k)
socket.htons(k)
for k in bad_values:
self.assertRaises(OverflowError, socket.ntohl, k)
self.assertRaises(OverflowError, socket.ntohs, k)
self.assertRaises(OverflowError, socket.htonl, k)
self.assertRaises(OverflowError, socket.htons, k)
def int_to_ipstr(int_ip):
return socket.inet_ntoa(
struct.pack('I', socket.htonl(int_ip))
)
def _encrypt(self, text, _id):
text = to_binary(text)
tmp_list = []
tmp_list.append(to_binary(self.get_random_string()))
length = struct.pack(b'I', socket.htonl(len(text)))
tmp_list.append(length)
tmp_list.append(text)
tmp_list.append(to_binary(_id))
text = b''.join(tmp_list)
text = PKCS7Encoder.encode(text)
ciphertext = to_binary(self.cipher.encrypt(text))
return base64.b64encode(ciphertext)
def num2ip(arg, int_ip):
"""
IP address and number conversion
arg == ip, Convert digital to IP address
"""
if arg == 'ip':
ip = socket.inet_ntoa(struct.pack('I', socket.htonl(int_ip)))
else:
ip = str(socket.ntohl(struct.unpack('I', socket.inet_aton(int_ip))[0]))
return ip
def num2ip(arg, int_ip):
"""
IP address and number conversion
"""
if arg == 'ip':
ip = socket.inet_ntoa(struct.pack('I', socket.htonl(int_ip)))
else:
ip = str(socket.ntohl(struct.unpack('I', socket.inet_aton(int_ip))[0]))
return ip
01_05_integer_conversion.py 文件源码
项目：011_python_network_programming_cookbook_demo
作者: jerry-0824
项目源码
文件源码
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def convert_integer():
data = 1234
# 32-bit
print "Original: %s => Long host byte order: %s, Network byte order: %s"\
%(data, socket.ntohl(data), socket.htonl(data))
# 16-bit
print "Original: %s => Short host byte order: %s, Network byte order: %s"\
%(data, socket.ntohs(data), socket.htons(data))
02_03_chat_server_with_select.py 文件源码
项目：011_python_network_programming_cookbook_demo
作者: jerry-0824
项目源码
文件源码
阅读 21
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def send(channel, *args):
buffer = cPickle.dumps(args)
value = socket.htonl(len(buffer))
size = struct.pack("L", value)
channel.send(size)
channel.send(buffer)
def read_routes():
f=open("/proc/net/route","r")
routes = []
s=socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
ifreq = ioctl(s, SIOCGIFADDR,struct.pack("16s16x",LOOPBACK_NAME))
addrfamily = struct.unpack("h",ifreq[16:18])[0]
if addrfamily == socket.AF_INET:
ifreq2 = ioctl(s, SIOCGIFNETMASK,struct.pack("16s16x",LOOPBACK_NAME))
msk = socket.ntohl(struct.unpack("I",ifreq2[20:24])[0])
dst = socket.ntohl(struct.unpack("I",ifreq[20:24])[0]) & msk
ifaddr = scapy.utils.inet_ntoa(ifreq[20:24])
routes.append((dst, msk, "0.0.0.0", LOOPBACK_NAME, ifaddr))
else:
warning("Interface lo: unkown address family (%i)"% addrfamily)
for l in f.readlines()[1:]:
iff,dst,gw,flags,x,x,x,msk,x,x,x = l.split()
flags = int(flags,16)
if flags & RTF_UP == 0:
continue
if flags & RTF_REJECT:
continue
try:
ifreq = ioctl(s, SIOCGIFADDR,struct.pack("16s16x",iff))
except IOError: # interface is present in routing tables but does not have any assigned IP
ifaddr="0.0.0.0"
else:
addrfamily = struct.unpack("h",ifreq[16:18])[0]
if addrfamily == socket.AF_INET:
ifaddr = scapy.utils.inet_ntoa(ifreq[20:24])
else:
warning("Interface %s: unkown address family (%i)"%(iff, addrfamily))
continue
routes.append((socket.htonl(long(dst,16))&0xffffffffL,
socket.htonl(long(msk,16))&0xffffffffL,
scapy.utils.inet_ntoa(struct.pack("I",long(gw,16))),
iff, ifaddr))
f.close()
return routes
############
### IPv6 ###
############
def read_routes():
try:
f=open("/proc/net/route","r")
except IOError:
warning("Can't open /proc/net/route !")
return []
routes = []
s=socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
ifreq = ioctl(s, SIOCGIFADDR,struct.pack("16s16x",LOOPBACK_NAME))
addrfamily = struct.unpack("h",ifreq[16:18])[0]
if addrfamily == socket.AF_INET:
ifreq2 = ioctl(s, SIOCGIFNETMASK,struct.pack("16s16x",LOOPBACK_NAME))
msk = socket.ntohl(struct.unpack("I",ifreq2[20:24])[0])
dst = socket.ntohl(struct.unpack("I",ifreq[20:24])[0]) & msk
ifaddr = scapy.utils.inet_ntoa(ifreq[20:24])
routes.append((dst, msk, "0.0.0.0", LOOPBACK_NAME, ifaddr))
else:
warning("Interface lo: unkown address family (%i)"% addrfamily)
for l in f.readlines()[1:]:
iff,dst,gw,flags,x,x,x,msk,x,x,x = l.split()
flags = int(flags,16)
if flags & RTF_UP == 0:
continue
if flags & RTF_REJECT:
continue
try:
ifreq = ioctl(s, SIOCGIFADDR,struct.pack("16s16x",iff))
except IOError: # interface is present in routing tables but does not have any assigned IP
ifaddr="0.0.0.0"
else:
addrfamily = struct.unpack("h",ifreq[16:18])[0]
if addrfamily == socket.AF_INET:
ifaddr = scapy.utils.inet_ntoa(ifreq[20:24])
else:
warning("Interface %s: unkown address family (%i)"%(iff, addrfamily))
continue
routes.append((socket.htonl(long(dst,16))&0xffffffffL,
socket.htonl(long(msk,16))&0xffffffffL,
scapy.utils.inet_ntoa(struct.pack("I",long(gw,16))),
iff, ifaddr))
f.close()
return routes
############
### IPv6 ###
############
def read_routes():
f=open("/proc/net/route","r")
routes = []
s=socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
ifreq = ioctl(s, SIOCGIFADDR,struct.pack("16s16x",LOOPBACK_NAME))
addrfamily = struct.unpack("h",ifreq[16:18])[0]
if addrfamily == socket.AF_INET:
ifreq2 = ioctl(s, SIOCGIFNETMASK,struct.pack("16s16x",LOOPBACK_NAME))
msk = socket.ntohl(struct.unpack("I",ifreq2[20:24])[0])
dst = socket.ntohl(struct.unpack("I",ifreq[20:24])[0]) & msk
ifaddr = scapy.utils.inet_ntoa(ifreq[20:24])
routes.append((dst, msk, "0.0.0.0", LOOPBACK_NAME, ifaddr))
else:
warning("Interface lo: unkown address family (%i)"% addrfamily)
for l in f.readlines()[1:]:
iff,dst,gw,flags,x,x,x,msk,x,x,x = l.split()
flags = int(flags,16)
if flags & RTF_UP == 0:
continue
if flags & RTF_REJECT:
continue
try:
ifreq = ioctl(s, SIOCGIFADDR,struct.pack("16s16x",iff))
except IOError: # interface is present in routing tables but does not have any assigned IP
ifaddr="0.0.0.0"
else:
addrfamily = struct.unpack("h",ifreq[16:18])[0]
if addrfamily == socket.AF_INET:
ifaddr = scapy.utils.inet_ntoa(ifreq[20:24])
else:
warning("Interface %s: unkown address family (%i)"%(iff, addrfamily))
continue
routes.append((socket.htonl(long(dst,16))&0xffffffffL,
socket.htonl(long(msk,16))&0xffffffffL,
scapy.utils.inet_ntoa(struct.pack("I",long(gw,16))),
iff, ifaddr))
f.close()
return routes
############
### IPv6 ###
############
def read_routes():
try:
f=open("/proc/net/route","rb")
except IOError:
warning("Can't open /proc/net/route !")
return []
routes = []
s=socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
ifreq = ioctl(s, SIOCGIFADDR,struct.pack("16s16x",LOOPBACK_NAME.encode('utf-8')))
addrfamily = struct.unpack("h",ifreq[16:18])[0]
if addrfamily == socket.AF_INET:
ifreq2 = ioctl(s, SIOCGIFNETMASK,struct.pack("16s16x",LOOPBACK_NAME.encode('utf-8')))
msk = socket.ntohl(struct.unpack("I",ifreq2[20:24])[0])
dst = socket.ntohl(struct.unpack("I",ifreq[20:24])[0]) & msk
ifaddr = scapy.utils.inet_ntoa(ifreq[20:24])
routes.append((dst, msk, "0.0.0.0", LOOPBACK_NAME, ifaddr))
else:
warning("Interface lo: unkown address family (%i)"% addrfamily)
for l in f.readlines()[1:]:
iff,dst,gw,flags,x,x,x,msk,x,x,x = l.split()
flags = int(flags,16)
if flags & RTF_UP == 0:
continue
if flags & RTF_REJECT:
continue
try:
ifreq = ioctl(s, SIOCGIFADDR,struct.pack("16s16x",iff))
except IOError: # interface is present in routing tables but does not have any assigned IP
ifaddr="0.0.0.0"
else:
addrfamily = struct.unpack("h",ifreq[16:18])[0]
if addrfamily == socket.AF_INET:
ifaddr = scapy.utils.inet_ntoa(ifreq[20:24])
else:
warning("Interface %s: unkown address family (%i)"%(iff, addrfamily))
continue
routes.append((socket.htonl(int(dst,16))&0xffffffff,
socket.htonl(int(msk,16))&0xffffffff,
scapy.utils.inet_ntoa(struct.pack("I",int(gw,16))),
iff.decode('utf-8'), ifaddr))
f.close()
return routes
############
### IPv6 ###
############
def read_routes():
try:
f=open("/proc/net/route","r")
except IOError:
warning("Can't open /proc/net/route !")
return []
routes = []
s=socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
ifreq = ioctl(s, SIOCGIFADDR,struct.pack("16s16x",LOOPBACK_NAME))
addrfamily = struct.unpack("h",ifreq[16:18])[0]
if addrfamily == socket.AF_INET:
ifreq2 = ioctl(s, SIOCGIFNETMASK,struct.pack("16s16x",LOOPBACK_NAME))
msk = socket.ntohl(struct.unpack("I",ifreq2[20:24])[0])
dst = socket.ntohl(struct.unpack("I",ifreq[20:24])[0]) & msk
ifaddr = scapy.utils.inet_ntoa(ifreq[20:24])
routes.append((dst, msk, "0.0.0.0", LOOPBACK_NAME, ifaddr))
else:
warning("Interface lo: unkown address family (%i)"% addrfamily)
for l in f.readlines()[1:]:
iff,dst,gw,flags,x,x,x,msk,x,x,x = l.split()
flags = int(flags,16)
if flags & RTF_UP == 0:
continue
if flags & RTF_REJECT:
continue
try:
ifreq = ioctl(s, SIOCGIFADDR,struct.pack("16s16x",iff))
except IOError: # interface is present in routing tables but does not have any assigned IP
ifaddr="0.0.0.0"
else:
addrfamily = struct.unpack("h",ifreq[16:18])[0]
if addrfamily == socket.AF_INET:
ifaddr = scapy.utils.inet_ntoa(ifreq[20:24])
else:
warning("Interface %s: unkown address family (%i)"%(iff, addrfamily))
continue
routes.append((socket.htonl(long(dst,16))&0xffffffffL,
socket.htonl(long(msk,16))&0xffffffffL,
scapy.utils.inet_ntoa(struct.pack("I",long(gw,16))),
iff, ifaddr))
f.close()
return routes
############
### IPv6 ###
############
def read_routes():
try:
f=open("/proc/net/route","rb")
except IOError:
warning("Can't open /proc/net/route !")
return []
routes = []
s=socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
ifreq = ioctl(s, SIOCGIFADDR,struct.pack("16s16x",LOOPBACK_NAME.encode('utf-8')))
addrfamily = struct.unpack("h",ifreq[16:18])[0]
if addrfamily == socket.AF_INET:
ifreq2 = ioctl(s, SIOCGIFNETMASK,struct.pack("16s16x",LOOPBACK_NAME.encode('utf-8')))
msk = socket.ntohl(struct.unpack("I",ifreq2[20:24])[0])
dst = socket.ntohl(struct.unpack("I",ifreq[20:24])[0]) & msk
ifaddr = scapy.utils.inet_ntoa(ifreq[20:24])
routes.append((dst, msk, "0.0.0.0", LOOPBACK_NAME, ifaddr))
else:
warning("Interface lo: unkown address family (%i)"% addrfamily)
for l in f.readlines()[1:]:
iff,dst,gw,flags,x,x,x,msk,x,x,x = l.split()
flags = int(flags,16)
if flags & RTF_UP == 0:
continue
if flags & RTF_REJECT:
continue
try:
ifreq = ioctl(s, SIOCGIFADDR,struct.pack("16s16x",iff))
except IOError: # interface is present in routing tables but does not have any assigned IP
ifaddr="0.0.0.0"
else:
addrfamily = struct.unpack("h",ifreq[16:18])[0]
if addrfamily == socket.AF_INET:
ifaddr = scapy.utils.inet_ntoa(ifreq[20:24])
else:
warning("Interface %s: unkown address family (%i)"%(iff, addrfamily))
continue
routes.append((socket.htonl(int(dst,16))&0xffffffff,
socket.htonl(int(msk,16))&0xffffffff,
scapy.utils.inet_ntoa(struct.pack("I",int(gw,16))),
iff.decode('utf-8'), ifaddr))
f.close()
return routes
############
### IPv6 ###
############
def read_routes():
try:
f=open("/proc/net/route","r")
except IOError:
warning("Can't open /proc/net/route !")
return []
routes = []
s=socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
ifreq = ioctl(s, SIOCGIFADDR,struct.pack("16s16x",LOOPBACK_NAME))
addrfamily = struct.unpack("h",ifreq[16:18])[0]
if addrfamily == socket.AF_INET:
ifreq2 = ioctl(s, SIOCGIFNETMASK,struct.pack("16s16x",LOOPBACK_NAME))
msk = socket.ntohl(struct.unpack("I",ifreq2[20:24])[0])
dst = socket.ntohl(struct.unpack("I",ifreq[20:24])[0]) & msk
ifaddr = scapy.utils.inet_ntoa(ifreq[20:24])
routes.append((dst, msk, "0.0.0.0", LOOPBACK_NAME, ifaddr))
else:
warning("Interface lo: unkown address family (%i)"% addrfamily)
for l in f.readlines()[1:]:
iff,dst,gw,flags,x,x,x,msk,x,x,x = l.split()
flags = int(flags,16)
if flags & RTF_UP == 0:
continue
if flags & RTF_REJECT:
continue
try:
ifreq = ioctl(s, SIOCGIFADDR,struct.pack("16s16x",iff))
except IOError: # interface is present in routing tables but does not have any assigned IP
ifaddr="0.0.0.0"
else:
addrfamily = struct.unpack("h",ifreq[16:18])[0]
if addrfamily == socket.AF_INET:
ifaddr = scapy.utils.inet_ntoa(ifreq[20:24])
else:
warning("Interface %s: unkown address family (%i)"%(iff, addrfamily))
continue
routes.append((socket.htonl(long(dst,16))&0xffffffffL,
socket.htonl(long(msk,16))&0xffffffffL,
scapy.utils.inet_ntoa(struct.pack("I",long(gw,16))),
iff, ifaddr))
f.close()
return routes
############
### IPv6 ###
############
def read_routes():
try:
f=open("/proc/net/route","r")
except IOError:
warning("Can't open /proc/net/route !")
return []
routes = []
s=socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
ifreq = ioctl(s, SIOCGIFADDR,struct.pack("16s16x",LOOPBACK_NAME))
addrfamily = struct.unpack("h",ifreq[16:18])[0]
if addrfamily == socket.AF_INET:
ifreq2 = ioctl(s, SIOCGIFNETMASK,struct.pack("16s16x",LOOPBACK_NAME))
msk = socket.ntohl(struct.unpack("I",ifreq2[20:24])[0])
dst = socket.ntohl(struct.unpack("I",ifreq[20:24])[0]) & msk
ifaddr = scapy.utils.inet_ntoa(ifreq[20:24])
routes.append((dst, msk, "0.0.0.0", LOOPBACK_NAME, ifaddr))
else:
warning("Interface lo: unkown address family (%i)"% addrfamily)
for l in f.readlines()[1:]:
iff,dst,gw,flags,x,x,x,msk,x,x,x = l.split()
flags = int(flags,16)
if flags & RTF_UP == 0:
continue
if flags & RTF_REJECT:
continue
try:
ifreq = ioctl(s, SIOCGIFADDR,struct.pack("16s16x",iff))
except IOError: # interface is present in routing tables but does not have any assigned IP
ifaddr="0.0.0.0"
else:
addrfamily = struct.unpack("h",ifreq[16:18])[0]
if addrfamily == socket.AF_INET:
ifaddr = scapy.utils.inet_ntoa(ifreq[20:24])
else:
warning("Interface %s: unkown address family (%i)"%(iff, addrfamily))
continue
routes.append((socket.htonl(long(dst,16))&0xffffffffL,
socket.htonl(long(msk,16))&0xffffffffL,
scapy.utils.inet_ntoa(struct.pack("I",long(gw,16))),
iff, ifaddr))
f.close()
return routes
############
### IPv6 ###
############
