funga-eth/funga/eth/cli/http.py

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2021-10-10 18:14:34 +02:00
# standard imports
import logging
# external imports
from http.server import (
HTTPServer,
BaseHTTPRequestHandler,
)
# local imports
from .handle import SignRequestHandler
from funga.error import SignerError
2021-10-10 18:14:34 +02:00
logg = logging.getLogger(__name__)
def start_server_http(spec):
httpd = HTTPServer(spec, HTTPSignRequestHandler)
logg.debug('starting http server {}'.format(spec))
httpd.serve_forever()
class HTTPSignRequestHandler(SignRequestHandler, BaseHTTPRequestHandler):
def do_POST(self):
if self.headers.get('Content-Type') != 'application/json':
self.send_response(400, 'me read json only')
self.end_headers()
return
try:
if 'application/json' not in self.headers.get('Accept').split(','):
self.send_response(400, 'me json only speak')
self.end_headers()
return
except AttributeError:
pass
l = self.headers.get('Content-Length')
try:
l = int(l)
except ValueError:
self.send_response(400, 'content length must be integer')
self.end_headers()
return
if l > 4096:
self.send_response(400, 'too much information')
self.end_headers()
return
if l < 0:
self.send_response(400, 'you are too negative')
self.end_headers()
return
b = b''
c = 0
while c < l:
d = self.rfile.read(l-c)
if d == None:
break
b += d
c += len(d)
if c > 4096:
self.send_response(413, 'i should slap you around for lying about your size')
self.end_headers()
return
try:
r = self.handle_jsonrpc(d)
except SignerError as e:
r = e.to_jsonrpc()
l = len(r)
self.send_response(200, 'You are the Keymaster')
self.send_header('Content-Length', str(l))
self.send_header('Cache-Control', 'no-cache')
self.send_header('Content-Type', 'application/json')
self.end_headers()
c = 0
while c < l:
n = self.wfile.write(r[c:])
c += n