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#!/usr/bin/env python
import http.server
import json
import re
from pdns_unittest import Handler
from urllib.parse import parse_qsl, urlparse, unquote
class DNSBackendServer(http.server.HTTPServer):
def __init__(self, *args, **kwargs):
self.handler = Handler()
super().__init__(*args, **kwargs)
def finish_request(self, request, client_address):
"""Finish one request by instantiating RequestHandlerClass."""
h = self.RequestHandlerClass(request, client_address, self, handler=self.handler)
class DNSBackendHandler(http.server.BaseHTTPRequestHandler):
def __init__(self, *args, **kwargs):
self.handler = kwargs['handler']
super().__init__(*args)
def url_to_args(self):
url = urlparse(self.path)
parts = list(map(lambda part: unquote(part), url.path.split("/")))
parts.pop(0)
self.method = None
if parts.pop(0) != 'dns':
return
self.method = parts.pop(0).lower()
self.args = {}
if self.method == 'lookup':
self.args['qname'] = parts.pop(0)
self.args['qtype'] = parts.pop(0)
elif self.method == 'list':
self.args['id'] = int(parts.pop(0))
self.args['zonename'] = parts.pop(0)
elif self.method in ('getbeforeandafternamesabsolute', 'getbeforeandafternames'):
self.args['id'] = int(parts.pop(0))
self.args['qname'] = parts.pop(0)
elif self.method in ('getdomainmetadata', 'setdomainmetadata'):
self.args['name'] = parts.pop(0)
self.args['kind'] = parts.pop(0)
elif self.method == 'getdomainkeys':
self.args['name'] = parts.pop(0)
elif self.method in ('removedomainkey', 'activatedomainkey', 'deactivatedomainkey'):
self.args['id'] = int(parts.pop(0))
self.args['name'] = parts.pop(0)
elif self.method in ('adddomainkey', 'gettsigkey', 'getdomaininfo', 'settsigkey', 'deletetsigkey', 'getalldomainmetadata'):
self.args['name'] = parts.pop(0)
elif self.method == 'setnotified':
self.args['id'] = int(parts.pop(0))
elif self.method == 'feedents':
self.args['id'] = int(parts.pop(0))
self.args['trxid'] = int(parts.pop(0))
elif self.method == 'ismaster':
self.args['name'] = parts.pop(0)
self.args['ip'] = parts.pop(0)
elif self.method in ('supermasterbackend', 'createslavedomain'):
self.args['ip'] = parts.pop(0)
self.args['domain'] = parts.pop(0)
elif self.method in ('feedents3', 'starttransaction'):
self.args['id'] = int(parts.pop(0))
self.args['domain'] = parts.pop(0)
self.args['trxid'] = int(parts.pop(0))
elif self.method in ('feedrecord', 'committransaction', 'aborttransaction'):
self.args['trxid'] = int(parts.pop(0))
elif self.method == 'replacerrset':
self.args['id'] = int(parts.pop(0))
self.args['qname'] = parts.pop(0)
self.args['qtype'] = parts.pop(0)
assert len(parts) == 0, parts
self.parse_qsl(url.query)
def parse_qsl(self, qs):
res = {}
for key, value in parse_qsl(qs):
m = re.match(r"^(.*)\[(.*)\]\[(.*)\]", key)
if m:
k1 = m.group(1)
k2 = int(m.group(2))
k3 = m.group(3)
if k1 not in res:
res[k1] = list({})
while len(res[k1]) <= k2:
res[k1].append({})
res[k1][k2][k3] = value
else:
m = re.match(r"^(.*)\[(.*)\]", key)
if m:
k1 = m.group(1)
k2 = m.group(2)
if k1 not in res:
if k2 == '':
res[k1] = list()
else:
res[k1] = {}
if k2 == '':
res[k1].append(value)
else:
res[k1][k2] = value
else:
res[key] = value
self.args = self.args | res
def do_GET(self):
if self.path == '/ping':
self.send_response(200)
self.end_headers()
self.wfile.write("pong".encode())
return
self.do_POST()
def do_DELETE(self):
self.do_POST()
def do_PATCH(self):
self.do_POST()
def do_PUT(self):
self.do_POST()
def do_POST(self):
self.url_to_args()
if not self.method:
self.send_error(404)
return
try:
length = 0
if 'content-length' in self.headers:
length = int(self.headers.get('content-length'))
if length > 0:
qs = self.rfile.read(length).decode()
self.parse_qsl(qs)
if self.method == "adddomainkey":
self.args['key'] = {
'flags': self.args['flags'],
'active': self.args['active'],
'published': self.args['published'],
'content': self.args['content']
}
del self.args['flags']
del self.args['active']
del self.args['published']
del self.args['content']
if 'serial' in self.args:
self.args['serial'] = int(self.args['serial'])
self.log_error("%r", self.args)
method = "do_%s" % self.method
self.handler.result = False
self.handler.log = []
if callable(getattr(self.handler, method, None)):
getattr(self.handler, method)(**self.args)
result = json.dumps({'result':self.handler.result,'log':self.handler.log}).encode()
self.log_error("%r", self.handler.result)
self.send_response(200)
self.send_header("content-type", "text/javascript");
self.send_header("content-length", len(result))
self.end_headers()
self.wfile.write(result)
else:
self.send_error(404, message=json.dumps({'error': 'No such method'}))
except BrokenPipeError as e2:
raise e2
except Exception as e:
raise e
self.log_error("Exception handling request: %r", e)
self.send_error(400, message=str(e))
def main():
server = DNSBackendServer(('', 62434), DNSBackendHandler)
try:
server.serve_forever()
except KeyboardInterrupt:
pass
main()
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