def recv(self, timeout=3):
"""
返回一个生成器，用于迭代socket在timeout内接受到的响应包
"""
while True:
rsocket, wsocket, errsocket = select.select([self.sock], [], [],
timeout)
if len(rsocket) == 0:
return
(response_buffer, address) = self.sock.recvfrom(65535)
u = Lib.Munpacker(response_buffer)
r = Lib.DnsResult(u, {})
yield (r, address[0])
def _make_packet(self, server, qtype=Type.A, recursive=True, qclass=Class.IN, port=53):
"""
组装探测请求包
"""
domainlist = ['www.wizeye.com.cn', server]
domain_id = {
'www.wizeye.com.cn': 11111,
server: 55555
}
packetlsit = []
for domain in domainlist:
packer = Lib.Mpacker()
tid = domain_id[domain]
if domain.split('.')[0] == 'www':
self._add_qheader(packer, recursive, tid)
packer.addQuestion(domain, qtype, qclass)
request_data = packer.getbuf()
packetlsit.append(request_data)
else:
ip_tips = domain.split('.')
qname = ip_tips[3] + '.' + ip_tips[2] + \
'.' + ip_tips[1] + '.' + ip_tips[0]
qname += '.in-addr.arpa'
self._add_qheader(packer, recursive, tid)
packer.addQuestion(qname, Type.PTR, qclass)
request_data = packer.getbuf()
packetlsit.append(request_data)
return packetlsit
class DomainToIp:
def __init__(self,DHOST='114.114.114.114'):
'''
初始化类DomainToIp，连接数据库，DNS服务器ip地址可以更改，默认为114.114.114.114
'''
self.DHOST = DHOST #DNS 服务器的地址
self.DPORT = 53 #默认端口是53
self.tid = random.randint(0,65535) #tid为随机数
self.opcode = Opcode.QUERY #标准查询
self.qtype = Type.A #查询类型为A
self.qclass = Class.IN #查询类IN
self.rd = 1 #期望递归查询
#要查询的域名
self.domain_list = ['www.baidu.com','www.sina.com','www.163.com','www.ifeng.com','www.hitwh.edu.cn']
def send_domain_receive_ip(self):
try:
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) #建立一个UDP套接字（SOCK_DGRAM，代表UDP，AF_INET表示IPv4）
except socket.error,msg:
print "无法创建socket.Error code:" +str(msg[0])+',Error message:'+msg[1] #error
sys.exit(1)
source_port = random.randint(1024, 65535) #windows不是65535 #随机port
s.bind(('', source_port))
#绑定，检测所有接口
domain_source = [] #发送的domain数量
domain_result = [] #接收到的domain数量，这两个变量主要用来判断丢包情况
'''循环发送需要解析的domain name'''
for domain in self.domain_list:
#domain_source.append(domain)
m = Lib.Mpacker()
m.addHeader(self.tid, 0, self.opcode, 0, 0, self.rd, 0, 0, 0, 1, 0, 0, 0)
m.addQuestion(domain,self.qtype,self.qclass)
request = m.getbuf()
try:
s.sendto(request,(self.DHOST, self.DPORT))
print 'domain: ',domain," send to Dns server:",self.DHOST
except socket.error,reason:
print reason
continue
def send(self,
server,
qname,
qtype=Type.A,
recursive=True,
qclass=Class.IN,
port=53):
"""
发送请求数据包，不返回任何响应
"""
packer = Lib.Mpacker()
self._add_qheader(packer, recursive)
packer.addQuestion(qname, qtype, qclass)
request_data = packer.getbuf()
self.sock.sendto(request_data, (server, port))
# error
print "无法创建socket.Error code:" + str(msg[0]) + ',Error message:' + msg[1]
sys.exit(1)
# windows不是65535 #随机port
source_port = random.randint(1024, 65535)
s.bind(('', source_port)) # 绑定，检测所有接口
result = [] # 得到的结果
result_ip = []
result_diffrences = []
ip_source = []
for domain in domain_list:
try:
m = Lib.Mpacker()
m.addHeader(tid, 0, opcode, 0, 0, rd, 0, 0, 0, 1, 0, 0, 0)
m.addQuestion(domain, qtype, qclass)
request = m.getbuf()
except:
print 'test'
pass
try:
s.sendto(request, (ip, DPORT))
print 'domain: ', domain, " send to Dns server:", ip
except socket.error, reason:
print reason
continue
'''循环接收收到的返回header'''
def batch_server_detect(list_ip=[]):
'''
batch dns detect , each time sends 'num' packets
'''
# TID为随机数
tid = random.randint(0, 65535)
# 端口为53,UDP
port = 53
# 操作为查询
opcode = Opcode.QUERY
# Tpye类型为A
qtype = Type.PTR
# 查询类，一般为IN
qclass = Class.IN
# 期望递归
rd = 1
# 建立一个UDP套接字（SOCK_DGRAM，代表UDP，AF_INET表示IPv4）
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
source_port = random.randint(1024, 65535)
# socket绑定到指定IP地址和接口上
s.bind(('', source_port))
ip_count = len(list_ip)
count = 0
result = []
while count * THREAD_NUM < ip_count:
ips = list_ip[count * THREAD_NUM: (count + 1) * THREAD_NUM]
for ip in ips:
server = long2ip(ip)
m = Lib.Mpacker()
m.addHeader(tid, 0, opcode, 0, 0, rd, 0, 0, 0, 1, 0, 0, 0)
ip_tips = server.split(".")
qname = ip_tips[3] + '.' + ip_tips[2] + \
'.' + ip_tips[1] + '.' + ip_tips[0]
qname += '.in-addr.arpa'
m.addQuestion(qname, qtype, qclass)
request = m.getbuf()
try:
a = s.sendto(request, (server, port))
print a, "send to IP:", server
except socket.error, reason:
print reason
while s:
try:
r, w, e = select.select([s], [], [], TIMEOUT)
if not len(r):
break
(reply, from_address) = s.recvfrom(65535)
u = Lib.Munpacker(reply)
r = Lib.DnsResult(u, {})
if r.header['ra'] == 1 and r.header['aa'] == 0:
print from_address, "递归服务器"
result.append(
{'ip': from_address[0], 'type': DNSSERVERTYPE[2], 'other': r.header['status']})
elif r.header['ra'] == 1 and r.header['aa'] == 1:
print from_address, "权威服务器(递归服务)"
result.append(
{'ip': from_address[0], 'type': DNSSERVERTYPE[1], 'other': r.header['status']})
elif r.header['ra'] == 0 and r.header['aa'] == 1:
print from_address, "权威服务器"
result.append(
{'ip': from_address[0], 'type': DNSSERVERTYPE[0], 'other': r.header['status']})
else:
print from_address, "服务器类型探测失败：未知服务器", r.header['status']
result.append(
{'ip': from_address[0], 'type': DNSSERVERTYPE[3], 'other': r.header['status']})
except socket.error, reason:
print reason
except DNS.Error as e:
print e
