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import string
import os.path
def is_boolean (value):
if value.lower() in ['on', '1', 'true']:
return '1'
return '0'
def is_tcp_port (value):
try:
tmp = int(value)
except:
raise ValueError, 'Port must be a number'
if tmp < 0 or tmp > 0xFFFF - 1:
raise ValueError, 'Out of the range (1 to 65534)'
return value
def is_path (value):
is_not_empty(value)
if value[0] == '/':
return value
if value[1:3] == ":\\":
return value
raise ValueError, 'Malformed path'
def is_dir_formated (value):
is_path (value)
try:
while len(value) > 1 and \
value[-1] in ['/', '\\']:
value = value[:-1]
except:
is_not_empty('')
# Replace double slashes
while True:
tmp = value.replace('//','/')
tmp = tmp.replace ('\\\\', '\\')
if tmp == value:
break
value = tmp
return value
def is_path_list (value):
re = []
for p in value.split(','):
re.append(is_path(p))
return reduce(lambda x,y: x+','+y, re)
def is_positive_int (value):
tmp = int(value)
if tmp < 0:
raise ValueError, 'It cannot be negative'
return value
def is_ip (value):
if ':' in value:
return is_ipv6(value)
return is_ipv4(value)
def is_netmask (value):
if ':' in value:
return is_netmask_ipv6(value)
return is_netmask_ipv4(value)
def is_ipv4 (value):
parts = value.split('.')
if len(parts) != 4:
raise ValueError, 'Malformed IPv4'
for byte in parts:
try:
v = int(byte)
except:
raise ValueError, 'Malformed IPv4 entry'
if v < 0 or v > 255:
raise ValueError, 'IPv4 entry out of range'
return value
def is_ipv6 (value):
from socket import inet_pton, AF_INET6
try:
tmp = inet_pton(AF_INET6, value)
except:
raise ValueError, 'Malformed IPv6'
return value
def is_local_dir_exists (value, cfg):
value = is_path (value)
chroot = cfg.get_val('server!chroot')
if chroot:
path = os.path.normpath (chroot + os.path.sep + value)
else:
path = value
if not os.path.exists(path):
raise ValueError, 'Path does not exits'
if not os.path.isdir(path):
raise ValueError, 'Path is not a directory'
return value
def is_local_file_exists (value, cfg):
value = is_path (value)
chroot = cfg.get_val('server!chroot')
if chroot:
path = os.path.normpath (chroot + os.path.sep + value)
else:
path = value
if not os.path.exists(path):
raise ValueError, 'Path does not exits'
if not os.path.isfile(path):
raise ValueError, 'Path is not a regular file'
return value
def parent_is_dir (value, cfg):
value = is_path (value)
dirname, filename = os.path.split(value)
is_local_dir_exists (dirname, cfg)
return value
def is_safe_id (value):
for v in value:
if v not in string.letters + string.digits and \
v not in "_-.":
raise ValueError, 'Invalid character '+v
return value
def is_safe_id_list (value):
ids = [id.strip() for id in value.split(',')]
for id in ids:
is_safe_id (id)
return ','.join(ids)
def int2bin(n, count=24):
"""returns the binary of integer n, using count number of digits"""
return "".join([str((n >> y) & 1) for y in range(count-1, -1, -1)])
def is_netmask_ipv4 (value):
bits = None
try:
bits = int(value)
if bits > 0 and bits <= 32:
return value
except:
pass
if not "." in value:
raise ValueError, 'Neither a number or an IPv4'
is_ipv4 (value)
bin = ''
for part in value.split("."):
bin += int2bin(int(part), 8)
zeros_began = False
for d in bin:
if d == '1' and zeros_began:
raise ValueError, 'Invalid mask'
if d == '0' and not zeros_began:
zeros_began = True
return value
def is_netmask_ipv6 (value):
bits = None
try:
bits = int(value)
if bits > 0 and bits <= 128:
return value
except:
pass
# TODO
return value
def is_ip_or_netmask (value):
if not '/' in value:
return is_ip (value)
parts = value.split('/')
if len(parts) != 2:
raise ValueError, 'Malformed entry (netmask)'
ip = is_ip (parts[0])
nm = is_netmask (parts[1])
return "%s/%s" % (ip, nm)
def is_ip_or_netmask_list (value):
re = []
for entry in value.split(','):
e = entry.strip()
re.append(is_ip_or_netmask(e))
return ','.join(re)
def is_not_empty (value):
if len(value) <= 0:
raise ValueError, 'Cannot be empty'
return value
def debug_fail (value):
raise ValueError, 'Forced failure'
def is_regex (value):
# Can a regular expression be checked?
return value
def is_http_url (value):
if not value.startswith('http://'):
raise ValueError, 'http:// missing'
return value
def is_url_or_path (value):
if value.startswith('http://'):
return is_http_url (value)
if value.startswith('/'):
return is_path (value)
raise ValueError, 'Not a URL, nor a path'
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