def parseRequest(self):
msgFromClient = io.readMessage(self.csocket)
print(f"The path is: {self.getPath(msgFromClient)}\n")
if not (self.checkMethod(msgFromClient)):
self.sendMethodNotAllowed()
io.closeConnection(self.csocket)
elif not self.isPathCorrect(msgFromClient):
self.sendNotExistingPath()
io.closeConnection(self.csocket)
elif self.isFaviconRequest(msgFromClient):
self.sendFavicon()
io.closeConnection(self.csocket)
elif self.isGatewayRequest(msgFromClient):
self.handleGatewayRequest(msgFromClient)
#the connection will be closed by the handleGatewayRequest method
elif self.isHomepageRequest(msgFromClient):
self.sendHomepage()
io.closeConnection(self.csocket)
elif self.isFrontendRequest(msgFromClient):
self.manageFrontendRequest(msgFromClient)
#the connection will be closed by the manageFrontendRequest
else:
self.sendBadRequest()
io.closeConnection(self.csocket)
def manageAuthRequest(self, msgFromClient):
if self.isDataAuthCorrect(msgFromClient):
s = self.formatAuthRequest(msgFromClient)
responseFromGateway = self.sendMessageAndGetResponse(self.gs, s)
self.sendHTMLresponseToClient(responseFromGateway)
else:
self.sendBadRequest()
io.writeMessage(self.gs, '<EOT>')
io.closeConnection(self.gs)
def manageFrontendRequest(self, msgFromClient):
path = self.getPath(msgFromClient)
contentType = 'text/' + path.split('.')[-1]
code = io.readFile(os.curdir + path)
pageLength = len(code)
# s is the response message
s = sm.setCode('HTTP/1.1', 200)
s = sm.setMessageAnswer(s, 'OK')
s = sm.setContentLength(s, pageLength)
s = sm.setContentType(s, contentType)
s = sm.setConnection(s, 'Close')
s = sm.setServer(s, server_name + '\n\n')
s = s + code
io.writeMessage(self.csocket, s)
io.closeConnection(self.csocket)
def sendCommunicationError(self, exc):
html_page = io.readFile(os.path.curdir + '/error.html')
newContent = '''<body>\n<div id="msg_instruction"> 409 Conflict </div>
<div id="details"> The gateway server cannot be reached properly.
Try again later.<br></div>'''
newContent = newContent + f'<div>Error detected: {exc}</div>'
v = html_page.split('<body>')
updatedHTML = v[0] + newContent + v[1]
page_length = len(updatedHTML)
s = sm.setCode('HTTP/1.1', 409)
s = sm.setMessageAnswer(s, 'Conflict')
s = sm.setContentLength(s, page_length)
s = sm.setContentType(s, 'text/html')
s = sm.setConnection(s, 'Close')
s = sm.setServer(s, server_name + '\n\n')
s = s + updatedHTML
io.writeMessage(self.csocket, s)
io.closeConnection(self.csocket)
def sendBadRequest(self):
html_page = io.readFile(os.path.curdir + '/error.html')
newContent = '''<body>\n<div id="msg_instruction"> 400 Bad Request </div>
<div id="details"> The server cannot process your request.
If it's an auth request, check that all the parameters:<br>
name, cardNumber, cvv, expDate and amount are present in the url.
</div>'''
v = html_page.split('<body>')
updatedHTML = v[0] + newContent + v[1]
page_length = len(updatedHTML)
s = sm.setCode('HTTP/1.1', 400)
s = sm.setMessageAnswer(s, 'Bad Request')
s = sm.setContentLength(s, page_length)
s = sm.setContentType(s, 'text/html')
s = sm.setConnection(s, 'Close')
s = sm.setServer(s, server_name + '\n\n')
s = s + updatedHTML
io.writeMessage(self.csocket, s)
io.closeConnection(self.csocket)