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# -*- coding: utf-8 -*-
#
# testcontrol-web-service.py
#
# Author: Toke Høiland-Jørgensen (toke@toke.dk)
# Date: 25 October 2014
# Copyright (c) 2014-2016, Toke Høiland-Jørgensen
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from __future__ import absolute_import, division, print_function, unicode_literals
import json
import os
import re
import select
import shlex
import subprocess
import sys
try:
from BaseHTTPServer import HTTPServer, BaseHTTPRequestHandler
from SocketServer import ForkingMixIn
except ImportError:
from http.server import HTTPServer, BaseHTTPRequestHandler
from socketserver import ForkingMixIn
tests = [{'name': 'test',
'args': {'ipver': 'IP version (4 or 6)'},
'exec': './test-exec.sh ${ipver}'}]
class TestWebServer(ForkingMixIn, HTTPServer):
pass
class TestWebService(BaseHTTPRequestHandler):
_INTERP_REGEX = re.compile(r"(^|[^$])(\$\{([^}]+)\})")
_MAX_INTERP = 1000
def respond(self, obj):
self.send_response(200)
self.send_header("Content-type", "application/json; charset=utf8")
self.end_headers()
self.wfile.write(json.dumps(obj).encode("utf-8"))
self.wfile.write("\n".encode("utf-8"))
def find_test(self, name):
for t in tests:
if t['name'] == name:
return t
self.send_error(404, "Test not found: %s" % name)
return None
def do_GET(self):
print(self.headers)
parts = os.path.split(self.path)
if len(parts) < 3 and not parts[1]:
self.respond(list([i['name'] for i in tests]))
else:
test = self.find_test(parts[1])
if test:
self.respond(test['args'])
def parse_input(self):
length = self.headers.get('content-length')
input_type = self.headers.get('Content-Type')
parts = input_type.split(";", 1)
if parts[0].strip().lower() != 'application/json':
self.send_error(415, 'Invalid format. Needs application/json')
return None
if len(parts) > 1 and parts[1].startswith('charset='):
charset = parts[1].split("=", 1)[1].strip()
else:
charset = 'utf-8'
try:
nbytes = int(length)
except (TypeError, ValueError):
self.send_error(411)
return None
if nbytes > 0:
data = self.rfile.read(nbytes)
while select.select([self.rfile], [], [], 0)[0]:
if not self.rfile.read(1):
break
try:
return json.loads(data.decode(charset))
except Exception as e:
self.send_error(400, "Unable to decode: %s" % e)
def interpolate(self, string, req):
m = self._INTERP_REGEX.search(string)
i = 0
while m is not None:
k = m.group(3)
if k in req:
string = string.replace(m.group(2), str(req[k]))
else:
string = string.replace(m.group(2), "$${%s}" % k)
m = self._INTERP_REGEX.search(string)
i += 1
if i > self._MAX_INTERP:
self.send_error(
500, "Too many interpolations performed for exec string.")
return None
return string.replace("$$", "$")
def handle_test(self, test, req):
cmdline = self.interpolate(test['exec'], req)
if cmdline:
args = shlex.split(cmdline)
proc = subprocess.Popen(args, stdout=subprocess.PIPE)
resp = json.loads(proc.stdout.readline().decode('utf-8'))
self.respond(resp)
def do_POST(self):
parts = os.path.split(self.path)
if not parts[1]:
self.send_error(405)
return
test = self.find_test(parts[1])
if test:
req = self.parse_input()
if req:
self.handle_test(test, req)
if __name__ == "__main__":
server_addr = ('localhost', 8000)
server = TestWebServer(server_addr, TestWebService)
try:
server.serve_forever()
except KeyboardInterrupt:
sys.exit(0)
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