def _do_query(cls, buf, offset):
qry = {}
offset, name = cls._do_name(buf, offset)
qry['Qname'] = name
fmt = "!HH"
reqlen = struct.calcsize(fmt)
strng = buf[offset:offset + reqlen]
res = struct.unpack(fmt, strng)
qry['Qtype'] = type_to_text(res[0])
qry['Qclass'] = class_to_text(res[1])
return offset + reqlen, qry
def _do_query(cls, buf, offset):
qry = {}
offset, name = cls._do_name(buf, offset)
qry['Qname'] = name
fmt = "!HH"
reqlen = struct.calcsize(fmt)
strng = buf[offset:offset + reqlen]
res = struct.unpack(fmt, strng)
qry['Qtype'] = type_to_text(res[0])
qry['Qclass'] = class_to_text(res[1])
return offset + reqlen, qry
def do_query(buf, offset):
qry={}
offset, name= do_name(buf, offset)
qry['Qname']= name
fmt= "!HH"
reqlen= struct.calcsize(fmt)
str= buf[offset:offset+reqlen]
res= struct.unpack(fmt, str)
qry['Qtype']= type_to_text(res[0])
qry['Qclass']= class_to_text(res[1])
offset= offset+reqlen
return offset, qry
def _do_rr(cls, buf, offset):
edns0_opt_nsid = 3 # this is also hardcoded in dns.edns.py
error = []
rr = {}
res = cls._do_name(buf, offset)
if res is None:
e = ("_do_rr", offset, "_do_name failed")
error.append(e)
return None
offset, name = res
rr['Name'] = name
fmt = "!HHIH"
reqlen = struct.calcsize(fmt)
dat = buf[offset:offset + reqlen]
res = struct.unpack(fmt, dat)
rr['Type'] = type_to_text(res[0])
rr['Class'] = class_to_text(res[1])
rr['TTL'] = res[2]
rr['RDlength'] = res[3]
offset += reqlen
rdata = buf[offset:offset + rr['RDlength']]
rdata_offset = offset
offset = offset + rr['RDlength']
if rr['Type'] == 'OPT': # this is per type_to_text function
edns0 = {
'UDPsize': res[1],
'ExtendedReturnCode': res[2] >> 24,
'Version': (res[2] and 0x0f00) >> 16,
'Z': (res[2] and 0x00ff),
'Type': 'OPT',
'Option': [],
'Name': name,
}
o = 0
while o < len(rdata):
fmt = "!HH"
reqlen = struct.calcsize(fmt)
dat = rdata[o:o + reqlen]
res = struct.unpack(fmt, dat)
opt = {
'OptionCode': res[0],
'OptionLength': res[1],
}
o += reqlen
if opt['OptionCode'] == edns0_opt_nsid:
opt['OptionName'] = 'NSID'
opt[opt['OptionName']] = rdata[o:o + opt['OptionLength']]
o = o + opt['OptionLength']
edns0['Option'].append(opt)
del rr['Class']
del rr['RDlength']
del rr['TTL']
del rr['Name']
del rr['Type']
rr['EDNS0'] = edns0
return offset, rr
if rr['Type'] == 'A' and rr[
'Class'] == "IN": # this is per type_to_text function
fmt = "!BBBB"
a, b, c, d = struct.unpack(fmt, rdata)
rr['Address'] = str(a) + '.' + str(b) + '.' + str(c) + '.' + str(d)
if rr['Type'] == 'NS' and rr[
'Class'] == "IN": # this is per type_to_text function
doffset, name = cls._do_name(buf, rdata_offset)
rr['Target'] = name
return offset, rr
def do_rr(buf, offset):
# TYPE_EDNS0 = 41 # This is also OPT in type_to_text function
EDNS0_OPT_NSID = 3 # this is also hardcoded in dns.edns.py
error = []
rr = {}
res = do_name(buf, offset)
if res == None:
e = ("do_rr", offset, "do_name failed")
error.append(e)
return None
offset, name = res
rr['Name'] = name
fmt = "!HHIH"
reqlen = struct.calcsize(fmt)
dat = buf[offset:offset + reqlen]
res = struct.unpack(fmt, dat)
rr['Type'] = type_to_text(res[0])
rr['Class'] = class_to_text(res[1])
rr['TTL'] = res[2]
rr['RDlength'] = res[3]
offset = offset + reqlen
rdata = buf[offset:offset + rr['RDlength']]
rdata_offset = offset
offset = offset + rr['RDlength']
# if rr['Type'] == TYPE_EDNS0: # This is our internal method
if rr['Type'] == 'OPT': # this is per type_to_text function
edns0 = {}
edns0['UDPsize'] = res[1]
edns0['ExtendedReturnCode'] = res[2] >> 24
edns0['Version'] = (res[2] and 0x0f00) >> 16
edns0['Z'] = (res[2] and 0x00ff)
edns0['Type'] = 'OPT'
edns0['Option'] = {}
edns0['Name'] = name
# EDNS0 options
o = 0
while o < len(rdata):
fmt = "!HH"
reqlen = struct.calcsize(fmt)
dat = rdata[o:o + reqlen]
res = struct.unpack(fmt, dat)
opt = {}
opt['OptionCode'] = res[0]
opt['OptionLength'] = res[1]
o = o + reqlen
if opt['OptionCode'] == EDNS0_OPT_NSID:
opt['OptionName'] = 'NSID'
opt[opt['OptionName']] = rdata[o:o + opt['OptionLength']]
o = o + opt['OptionLength']
edns0['Option'] = opt
del rr['Class']
del rr['RDlength']
del rr['TTL']
del rr['Name']
del rr['Type']
rr['EDNS0'] = edns0
return offset, rr
if rr['Type'] == 'A' and rr[
'Class'] == "IN": # this is per type_to_text function
fmt = "!BBBB"
a, b, c, d = struct.unpack(fmt, rdata)
rr['Address'] = str(a) + '.' + str(b) + '.' + str(c) + '.' + str(d)
if rr['Type'] == 'NS' and rr[
'Class'] == "IN": # this is per type_to_text function
doffset, name = do_name(buf, rdata_offset)
rr['Target'] = name #rdata[2:rr['RDlength']-2]
return offset, rr
def _do_rr(cls, buf, offset):
edns0_opt_nsid = 3 # this is also hardcoded in dns.edns.py
error = []
rr = {}
res = cls._do_name(buf, offset)
if res is None:
e = ("_do_rr", offset, "_do_name failed")
error.append(e)
return None
offset, name = res
rr['Name'] = name
fmt = "!HHIH"
reqlen = struct.calcsize(fmt)
dat = buf[offset:offset + reqlen]
res = struct.unpack(fmt, dat)
rr['Type'] = type_to_text(res[0])
rr['Class'] = class_to_text(res[1])
rr['TTL'] = res[2]
rr['RDlength'] = res[3]
offset += reqlen
rdata = buf[offset:offset + rr['RDlength']]
rdata_offset = offset
offset = offset + rr['RDlength']
if rr['Type'] == 'OPT': # this is per type_to_text function
edns0 = {
'UDPsize': res[1],
'ExtendedReturnCode': res[2] >> 24,
'Version': (res[2] and 0x0f00) >> 16,
'Z': (res[2] and 0x00ff),
'Type': 'OPT',
'Option': [],
'Name': name,
}
o = 0
while o < len(rdata):
fmt = "!HH"
reqlen = struct.calcsize(fmt)
dat = rdata[o:o + reqlen]
res = struct.unpack(fmt, dat)
opt = {
'OptionCode': res[0],
'OptionLength': res[1],
}
o += reqlen
if opt['OptionCode'] == edns0_opt_nsid:
opt['OptionName'] = 'NSID'
opt[opt['OptionName']] = rdata[o:o + opt['OptionLength']]
o = o + opt['OptionLength']
edns0['Option'].append(opt)
del rr['Class']
del rr['RDlength']
del rr['TTL']
del rr['Name']
del rr['Type']
rr['EDNS0'] = edns0
return offset, rr
if rr['Type'] == 'A' and rr['Class'] == "IN": # this is per type_to_text function
fmt = "!BBBB"
a, b, c, d = struct.unpack(fmt, rdata)
rr['Address'] = str(a) + '.' + str(b) + '.' + str(c) + '.' + str(d)
if rr['Type'] == 'NS' and rr['Class'] == "IN": # this is per type_to_text function
doffset, name = cls._do_name(buf, rdata_offset)
rr['Target'] = name
return offset, rr
def do_rr(buf, offset):
# TYPE_EDNS0 = 41 # This is also OPT in type_to_text function
EDNS0_OPT_NSID = 3 # this is also hardcoded in dns.edns.py
error = []
rr = {}
res= do_name(buf, offset)
if res == None:
e= ("do_rr", offset, "do_name failed")
error.append(e)
return None
offset, name= res
rr['Name']= name
fmt= "!HHIH"
reqlen= struct.calcsize(fmt)
dat= buf[offset:offset+reqlen]
res= struct.unpack(fmt, dat)
rr['Type']= type_to_text(res[0])
rr['Class']= class_to_text(res[1])
rr['TTL']= res[2]
rr['RDlength']= res[3]
offset= offset+reqlen
rdata= buf[offset:offset+rr['RDlength']]
rdata_offset= offset
offset= offset+rr['RDlength']
# if rr['Type'] == TYPE_EDNS0: # This is our internal method
if rr['Type'] == 'OPT': # this is per type_to_text function
edns0= {}
edns0['UDPsize']= res[1]
edns0['ExtendedReturnCode']= res[2] >> 24
edns0['Version']= (res[2] and 0x0f00) >> 16
edns0['Z']= (res[2] and 0x00ff)
edns0['Type']= 'OPT'
edns0['Option']= {}
edns0['Name']= name
# EDNS0 options
o= 0
while o < len(rdata):
fmt= "!HH"
reqlen= struct.calcsize(fmt)
dat= rdata[o:o+reqlen]
res= struct.unpack(fmt, dat)
opt= {}
opt['OptionCode']= res[0]
opt['OptionLength']= res[1]
o=o+reqlen
if opt['OptionCode'] == EDNS0_OPT_NSID:
opt['OptionName']= 'NSID'
opt[opt['OptionName']]= rdata[o:o+opt['OptionLength']]
o=o+opt['OptionLength']
edns0['Option'] = opt
del rr['Class']
del rr['RDlength']
del rr['TTL']
del rr['Name']
del rr['Type']
rr['EDNS0'] = edns0
return offset, rr
if rr['Type'] == 'A' and rr['Class'] == "IN": # this is per type_to_text function
fmt= "!BBBB"
a,b,c,d = struct.unpack(fmt, rdata)
rr['Address'] = str(a)+'.'+str(b)+'.'+str(c)+'.'+str(d)
if rr['Type'] == 'NS' and rr['Class'] == "IN": # this is per type_to_text function
doffset,name = do_name(buf,rdata_offset)
rr['Target'] = name #rdata[2:rr['RDlength']-2]
return offset, rr
