def do_POST(self):
maxlen = 5000000
(path, sep, query) = self.path.partition('?')
if not path.startswith(self.server.navurl):
self.send_error(404, "unsupported post url")
return
try:
ctype, pdict = cgi.parse_header(
self.headers.getheader('content-type'))
if ctype == 'multipart/form-data':
postvars = cgi.parse_multipart(self.rfile, pdict)
elif ctype == 'application/x-www-form-urlencoded':
length = int(self.headers.getheader('content-length'))
if length > maxlen:
raise Exception("too much data" + unicode(length))
postvars = cgi.parse_qs(self.rfile.read(length),
keep_blank_values=1)
elif ctype == 'application/json':
length = int(self.headers.getheader('content-length'))
if length > maxlen:
raise Exception("too much data" + unicode(length))
postvars = {'_json': self.rfile.read(length)}
else:
postvars = {}
requestParam = urlparse.parse_qs(query, True)
requestParam.update(postvars)
self.handleNavRequest(path, requestParam)
except Exception as e:
txt = traceback.format_exc()
AVNLog.ld("unable to process request for ", path, query, txt)
self.send_response(500, txt)
self.end_headers()
return
def handleNavRequest(self, path, requestParam):
#check if we have something behind the navurl
#treat this as a filename and set it ion the request parameter
fname = path[(len(self.server.navurl) + 1):]
if fname is not None and fname != "":
fname = fname.split('?', 1)[0]
if fname != "":
if requestParam.get('filename') is None:
requestParam['filename'] = [fname.encode('utf-8')]
requestType = requestParam.get('request')
if requestType is None:
requestType = 'gps'
else:
requestType = requestType[0]
AVNLog.ld('navrequest', requestParam)
try:
rtj = None
if requestType == 'gps' or requestType == 'self':
rtj = self.handleGpsRequest(requestParam)
elif requestType == 'nmeaStatus':
rtj = self.handleNmeaStatus(requestParam)
elif requestType == 'ais':
rtj = self.handleAISRequest(requestParam)
elif requestType == 'status':
rtj = self.handleStatusRequest(requestParam)
elif requestType == 'debuglevel' or requestType == 'loglevel':
rtj = self.handleDebugLevelRequest(requestParam)
elif requestType == 'listdir' or requestType == 'list':
rtj = self.handleListDir(requestParam)
elif requestType == 'download':
#download requests are special
# the dow not return json...
self.handleDownloadRequest(requestParam)
return
elif requestType == 'upload':
try:
rtj = self.handleUploadRequest(requestParam)
except Exception as e:
AVNLog.error("upload error: %s", unicode(e))
rtj = json.dumps({'status': unicode(e)})
elif requestType == 'delete':
rtj = self.handleDeleteRequest(requestParam)
elif requestType == 'capabilities':
rtj = self.handleCapabilityRequest(requestParam)
elif requestType == 'api':
#new handling for dedicated requests for some handler
type = self.getRequestParam(requestParam, 'type')
rtj = self.handleSpecificRequest(requestParam, type)
else:
#legacy: have the api type as requestType
rtj = self.handleSpecificRequest(requestParam, requestType)
self.sendNavResponse(rtj, requestParam)
except Exception as e:
text = unicode(e)
rtj = json.dumps(
AVNUtil.getReturnData(error=text,
stack=traceback.format_exc()))
self.sendNavResponse(rtj, requestParam)
return
def __init__(self, request, client_address, server):
#allow write buffering
#see https://lautaportti.wordpress.com/2011/04/01/basehttprequesthandler-wastes-tcp-packets/
self.wbufsize = -1
self.id = None
self.getRequestParam = AVNUtil.getHttpRequestParam
AVNLog.ld("receiver thread started", client_address)
SimpleHTTPServer.SimpleHTTPRequestHandler.__init__(
self, request, client_address, server)
def sendNavResponse(self, rtj, requestParam):
if not rtj is None:
self.send_response(200)
if not requestParam.get('callback') is None:
rtj = "%s(%s);" % (requestParam.get('callback'), rtj)
self.send_header("Content-type", "text/javascript")
else:
self.send_header("Content-type", "application/json")
self.send_header("Content-Length", str(len(rtj)))
self.send_header("Last-Modified", self.date_time_string())
self.end_headers()
self.wfile.write(rtj)
AVNLog.ld("nav response", rtj)
else:
raise Exception("empty response")
