def is_local_device(my_ips, my_port, dev_ip, dev_port):
"""
Return True if the provided dev_ip and dev_port are among the IP
addresses specified in my_ips and my_port respectively.
To support accurate locality determination in the server-per-port
deployment, when my_port is None, only IP addresses are used for
determining locality (dev_port is ignored).
If dev_ip is a hostname then it is first translated to an IP
address before checking it against my_ips.
"""
candidate_ips = []
if not is_valid_ip(dev_ip) and is_valid_hostname(dev_ip):
try:
# get the ip for this host; use getaddrinfo so that
# it works for both ipv4 and ipv6 addresses
addrinfo = socket.getaddrinfo(dev_ip, dev_port)
for addr in addrinfo:
family = addr[0]
dev_ip = addr[4][0] # get the ip-address
if family == socket.AF_INET6:
dev_ip = expand_ipv6(dev_ip)
candidate_ips.append(dev_ip)
except socket.gaierror:
return False
else:
if is_valid_ipv6(dev_ip):
dev_ip = expand_ipv6(dev_ip)
candidate_ips = [dev_ip]
for dev_ip in candidate_ips:
if dev_ip in my_ips and (my_port is None or dev_port == my_port):
return True
return False
def validate_and_normalize_ip(ip):
"""
Return normalized ip if the ip is a valid ip.
Otherwise raise ValueError Exception. The hostname is
normalized to all lower case. IPv6-addresses are converted to
lowercase and fully expanded.
"""
# first convert to lower case
new_ip = ip.lower()
if is_valid_ipv4(new_ip):
return new_ip
elif is_valid_ipv6(new_ip):
return expand_ipv6(new_ip)
else:
raise ValueError('Invalid ip %s' % ip)
def is_local_device(my_ips, my_port, dev_ip, dev_port):
"""
Return True if the provided dev_ip and dev_port are among the IP
addresses specified in my_ips and my_port respectively.
To support accurate locality determination in the server-per-port
deployment, when my_port is None, only IP addresses are used for
determining locality (dev_port is ignored).
If dev_ip is a hostname then it is first translated to an IP
address before checking it against my_ips.
"""
candidate_ips = []
if not is_valid_ip(dev_ip) and is_valid_hostname(dev_ip):
try:
# get the ip for this host; use getaddrinfo so that
# it works for both ipv4 and ipv6 addresses
addrinfo = socket.getaddrinfo(dev_ip, dev_port)
for addr in addrinfo:
family = addr[0]
dev_ip = addr[4][0] # get the ip-address
if family == socket.AF_INET6:
dev_ip = expand_ipv6(dev_ip)
candidate_ips.append(dev_ip)
except socket.gaierror:
return False
else:
if is_valid_ipv6(dev_ip):
dev_ip = expand_ipv6(dev_ip)
candidate_ips = [dev_ip]
for dev_ip in candidate_ips:
if dev_ip in my_ips and (my_port is None or dev_port == my_port):
return True
return False
def validate_and_normalize_ip(ip):
"""
Return normalized ip if the ip is a valid ip.
Otherwise raise ValueError Exception. The hostname is
normalized to all lower case. IPv6-addresses are converted to
lowercase and fully expanded.
"""
# first convert to lower case
new_ip = ip.lower()
if is_valid_ipv4(new_ip):
return new_ip
elif is_valid_ipv6(new_ip):
return expand_ipv6(new_ip)
else:
raise ValueError('Invalid ip %s' % ip)
def validate_and_normalize_address(address):
"""
Return normalized address if the address is a valid ip or hostname.
Otherwise raise ValueError Exception. The hostname is
normalized to all lower case. IPv6-addresses are converted to
lowercase and fully expanded.
RFC1123 2.1 Host Names and Nubmers
DISCUSSION
This last requirement is not intended to specify the complete
syntactic form for entering a dotted-decimal host number;
that is considered to be a user-interface issue. For
example, a dotted-decimal number must be enclosed within
"[ ]" brackets for SMTP mail (see Section 5.2.17). This
notation could be made universal within a host system,
simplifying the syntactic checking for a dotted-decimal
number.
If a dotted-decimal number can be entered without such
identifying delimiters, then a full syntactic check must be
made, because a segment of a host domain name is now allowed
to begin with a digit and could legally be entirely numeric
(see Section 6.1.2.4). However, a valid host name can never
have the dotted-decimal form #.#.#.#, since at least the
highest-level component label will be alphabetic.
"""
new_address = address.lstrip('[').rstrip(']')
if address.startswith('[') and address.endswith(']'):
return validate_and_normalize_ip(new_address)
new_address = new_address.lower()
if is_valid_ipv4(new_address):
return new_address
elif is_valid_ipv6(new_address):
return expand_ipv6(new_address)
elif is_valid_hostname(new_address):
return new_address
else:
raise ValueError('Invalid address %s' % address)
def validate_and_normalize_address(address):
"""
Return normalized address if the address is a valid ip or hostname.
Otherwise raise ValueError Exception. The hostname is
normalized to all lower case. IPv6-addresses are converted to
lowercase and fully expanded.
RFC1123 2.1 Host Names and Nubmers
DISCUSSION
This last requirement is not intended to specify the complete
syntactic form for entering a dotted-decimal host number;
that is considered to be a user-interface issue. For
example, a dotted-decimal number must be enclosed within
"[ ]" brackets for SMTP mail (see Section 5.2.17). This
notation could be made universal within a host system,
simplifying the syntactic checking for a dotted-decimal
number.
If a dotted-decimal number can be entered without such
identifying delimiters, then a full syntactic check must be
made, because a segment of a host domain name is now allowed
to begin with a digit and could legally be entirely numeric
(see Section 6.1.2.4). However, a valid host name can never
have the dotted-decimal form #.#.#.#, since at least the
highest-level component label will be alphabetic.
"""
new_address = address.lstrip('[').rstrip(']')
if address.startswith('[') and address.endswith(']'):
return validate_and_normalize_ip(new_address)
new_address = new_address.lower()
if is_valid_ipv4(new_address):
return new_address
elif is_valid_ipv6(new_address):
return expand_ipv6(new_address)
elif is_valid_hostname(new_address):
return new_address
else:
raise ValueError('Invalid address %s' % address)
def is_local_device(my_ips, my_port, dev_ip, dev_port):
"""
Return True if the provided dev_ip and dev_port are among the IP
addresses specified in my_ips and my_port respectively.
If dev_ip is a hostname then it is first translated to an IP
address before checking it against my_ips.
"""
if not is_valid_ip(dev_ip) and is_valid_hostname(dev_ip):
try:
# get the ip for this host; use getaddrinfo so that
# it works for both ipv4 and ipv6 addresses
addrinfo = socket.getaddrinfo(dev_ip, dev_port)
for addr in addrinfo:
family = addr[0]
dev_ip = addr[4][0] # get the ip-address
if family == socket.AF_INET6:
dev_ip = expand_ipv6(dev_ip)
if dev_ip in my_ips and dev_port == my_port:
return True
return False
except socket.gaierror:
return False
return dev_ip in my_ips and dev_port == my_port
def is_local_device(my_ips, my_port, dev_ip, dev_port):
"""
Return True if the provided dev_ip and dev_port are among the IP
addresses specified in my_ips and my_port respectively.
If dev_ip is a hostname then it is first translated to an IP
address before checking it against my_ips.
"""
if not is_valid_ip(dev_ip) and is_valid_hostname(dev_ip):
try:
# get the ip for this host; use getaddrinfo so that
# it works for both ipv4 and ipv6 addresses
addrinfo = socket.getaddrinfo(dev_ip, dev_port)
for addr in addrinfo:
family = addr[0]
dev_ip = addr[4][0] # get the ip-address
if family == socket.AF_INET6:
dev_ip = expand_ipv6(dev_ip)
if dev_ip in my_ips and dev_port == my_port:
return True
return False
except socket.gaierror:
return False
return dev_ip in my_ips and dev_port == my_port
