def str_to_hostentry(entry, sanitize=False, single_format=False):
"""
Transform a line from a hosts file into an instance of HostsEntry
:param entry: A line from the hosts file
:return: An instance of HostsEntry
"""
line_parts = entry.strip().split()
address_part = line_parts[0]
if is_ipv4(address_part) and valid_hostnames(line_parts[1:]):
if sanitize:
address_part = '0.0.0.0'
return HostsEntry(entry_type='ipv4',
address=address_part,
names=line_parts[1:])
elif is_ipv6(address_part) and valid_hostnames(line_parts[1:]):
if sanitize:
address_part = '::'
return HostsEntry(entry_type='ipv6',
address=address_part,
names=line_parts[1:])
elif single_format and len(line_parts) == 1 and valid_hostnames(
line_parts):
address_part = '0.0.0.0'
return HostsEntry(entry_type='ipv4',
address=address_part,
names=line_parts)
else:
return False
def str_to_hostentry(entry):
"""
Transform a line from a hosts file into an instance of HostsEntry
:param entry: A line from the hosts file
:return: An instance of HostsEntry
"""
line_parts = entry.strip().split()
if is_ipv4(line_parts[0]) and valid_hostnames(line_parts[1:]):
return HostsEntry(entry_type='ipv4',
address=line_parts[0],
names=line_parts[1:])
elif is_ipv6(line_parts[0]) and valid_hostnames(line_parts[1:]):
return HostsEntry(entry_type='ipv6',
address=line_parts[0],
names=line_parts[1:])
else:
return False
def str_to_hostentry(entry):
"""
Transform a line from a hosts file into an instance of HostsEntry
:param entry: A line from the hosts file
:return: An instance of HostsEntry
"""
line_parts = entry.strip().split()
if is_ipv4(line_parts[0]) and valid_hostnames(line_parts[1:]):
return HostsEntry(entry_type='ipv4',
address=line_parts[0],
names=line_parts[1:])
elif is_ipv6(line_parts[0]) and valid_hostnames(line_parts[1:]):
return HostsEntry(entry_type='ipv6',
address=line_parts[0],
names=line_parts[1:])
else:
return False
def test_hostname_validation_failure_with_leading_hyphen():
"""
Test function returns False if a hostname with a leading hyphen is specified
"""
assert not valid_hostnames(['example.com', '-example'])
def test_hostname_validation_failure_too_long():
"""
Test function returns False if a hostname over 255 chars is specified
"""
long_hostname = 'x' * 256
assert not valid_hostnames(['example.com', long_hostname])
def test_hostname_validation_success():
"""
Test function returns True if valid hostnames are specified
"""
assert valid_hostnames(['example.com', 'example'])