# -*- coding: utf-8 -*- # # Copyright (c) 2015 Virtual Cable S.L. # All rights reserved. # # Redistribution and use in source and binary forms, with or without modification, # are permitted provided that the following conditions are met: # # * Redistributions of source code must retain the above copyright notice, # this list of conditions and the following disclaimer. # * Redistributions in binary form must reproduce the above copyright notice, # this list of conditions and the following disclaimer in the documentation # and/or other materials provided with the distribution. # * Neither the name of Virtual Cable S.L. nor the names of its contributors # may be used to endorse or promote products derived from this software # without specific prior written permission. # # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE # DISCLAIMED. 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""" @author: Adolfo Gómez, dkmaster at dkmon dot com """ import json import ssl import threading from six.moves.socketserver import ThreadingMixIn # @UnresolvedImport from six.moves.BaseHTTPServer import BaseHTTPRequestHandler # @UnresolvedImport from six.moves.BaseHTTPServer import HTTPServer # @UnresolvedImport from six.moves.urllib.parse import unquote # @UnresolvedImport from .utils import exceptionToMessage from .certs import createSelfSignedCert from .log import logger class HTTPServerHandler(BaseHTTPRequestHandler): service = None protocol_version = 'HTTP/1.0' server_version = 'OpenGnsys Agent Server' sys_version = '' def sendJsonError(self, code, message): self.send_response(code) self.send_header('Content-type', 'application/json') self.end_headers() self.wfile.write(str.encode(json.dumps({'error': message}))) return def sendJsonResponse(self, data): try: self.send_response(200) except Exception as e: logger.warn ('exception: "{}"'.format(str(e))) data = json.dumps(data) self.send_header('Content-type', 'application/json') self.send_header('Content-Length', str(len(data))) self.end_headers() # Send the html message self.wfile.write(str.encode(data)) def parseUrl(self): """ Very simple path & params splitter """ path = self.path.split('?')[0][1:].split('/') try: params = dict((v[0], unquote(v[1])) for v in (v.split('=') for v in self.path.split('?')[1].split('&'))) except Exception: params = {} for v in self.service.modules: if v.name == path[0]: # Case Sensitive!!!! return v, path[1:], params return None, path, params def notifyMessage(self, module, path, get_params, post_params): """ Locates witch module will process the message based on path (first folder on url path) """ try: if module is None: raise Exception ({ '_httpcode': 404, '_msg': f'Module {path[0]} not found' }) data = module.processServerMessage(path, get_params, post_params, self) self.sendJsonResponse(data) except Exception as e: logger.exception() n_args = len (e.args) if 0 == n_args: logger.debug ('Empty exception raised from message processor for "{}"'.format(path[0])) self.sendJsonError(500, exceptionToMessage(e)) else: arg0 = e.args[0] if type (arg0) is str: logger.debug ('Message processor for "{}" returned exception string "{}"'.format(path[0], str(e))) self.sendJsonError (500, exceptionToMessage(e)) elif type (arg0) is dict: if '_httpcode' in arg0: logger.debug ('Message processor for "{}" returned HTTP code "{}" with exception string "{}"'.format(path[0], str(arg0['_httpcode']), str(arg0['_msg']))) self.sendJsonError (arg0['_httpcode'], arg0['_msg']) else: logger.debug ('Message processor for "{}" returned exception dict "{}" with no HTTP code'.format(path[0], str(e))) self.sendJsonError (500, exceptionToMessage(e)) else: logger.debug ('Message processor for "{}" returned non-string and non-dict exception "{}", type "{}"'.format(path[0], str(e), type(e))) self.sendJsonError (500, exceptionToMessage(e)) ## not reached def do_GET(self): module, path, params = self.parseUrl() self.notifyMessage(module, path, params, None) def do_POST(self): module, path, get_params = self.parseUrl() post_params = None # Tries to get JSON content (UTF-8 encoded) try: length = int(self.headers.get('content-length')) content = self.rfile.read(length).decode('utf-8') logger.debug('length: {0}, content >>{1}<<'.format(length, content)) post_params = json.loads(content) except Exception as e: self.sendJsonError(500, exceptionToMessage(e)) self.notifyMessage(module, path, get_params, post_params) def log_error(self, fmt, *args): logger.error('HTTP ' + fmt % args) def log_message(self, fmt, *args): logger.debug('HTTP ' + fmt % args) class HTTPThreadingServer(ThreadingMixIn, HTTPServer): pass class HTTPServerThread(threading.Thread): def __init__(self, address, service): super(self.__class__, self).__init__() HTTPServerHandler.service = service # Keep tracking of service so we can intercact with it self.certFile = createSelfSignedCert() self.server = HTTPThreadingServer(address, HTTPServerHandler) context = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER) context.load_cert_chain(certfile=self.certFile) self.server.socket = context.wrap_socket(self.server.socket, server_side=True) logger.debug('Initialized HTTPS Server thread on {}'.format(address)) def getServerUrl(self): return 'https://{}:{}/'.format(self.server.server_address[0], self.server.server_address[1]) def stop(self): self.server.shutdown() def run(self): self.server.serve_forever()