CMPUT404-Assignment-1

README.md

@@ -1,26 +1,54 @@
-CMPUT404-assignment-webserver
-=============================
+# CMPUT404-assignment-webserver
 
 CMPUT404-assignment-webserver
 
 See requirements.org (plain-text) for a description of the project.
 
 Make a simple webserver.
 
-Contributors / Licensing
-========================
+# Contributors / Licensing
 
 Generally everything is LICENSE'D under the Apache 2 license by Abram Hindle.
 
 server.py contains contributions from:
 
-* Abram Hindle
-* Eddie Antonio Santos
-* Jackson Z Chang
-* Mandy Meindersma 
+- Abram Hindle
+- Eddie Antonio Santos
+- Jackson Z Chang
+- Mandy Meindersma
+- Ferdous Adit
 
 But the server.py example is derived from the python documentation
-examples thus some of the code is Copyright © 2001-2013 Python
+examples thus some of the code is Copyright © 2001-2023 Python
 Software Foundation; All Rights Reserved under the PSF license (GPL
 compatible) http://docs.python.org/2/library/socketserver.html
 
+- root.png
+- deep.png
+
+Screenshots are derivative works and as such subject to the copyright of 
+the displayed content, may it be a video, television program, or a computer
+program. Thus, screenshots must not be uploaded to Wikimedia Commons unless 
+all content in them is under a https://en.wikipedia.org/wiki/Free_license or 
+in the public domain.
+
+# Credit or References
+
+- BogoToBogo<br />
+https://www.bogotobogo.com/python/python_network_programming_socketserver_framework_for_network_servers.php<br />
+Network Programming III - SocketServer<br />
+
+- Tech With Tim<br />
+https://www.youtube.com/@TechWithTim<br />
+Python Socket Programming Tutorial<br />
+https://youtu.be/3QiPPX-KeSc<br />
+Youtube<br />
+
+- jbx<br />
+https://stackoverflow.com/users/340088/jbx<br />
+https://stackoverflow.com/a/53070496<br />
+Stackoverflow<br />
+
+- PyMOTW<br />
+http://pymotw.com/2/SocketServer/<br />
+SocketServer – Creating network servers<br />

server.py

@@ -1,14 +1,17 @@
-#  coding: utf-8 
+#  coding: utf-8
 import socketserver
+import os
 
-# Copyright 2013 Abram Hindle, Eddie Antonio Santos
-# 
+# Copyright 2023 Abram Hindle, Eddie Antonio Santos
+#
+# Updated by Ferdous Adit, 1538839.
+#
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
-# 
+#
 #     http://www.apache.org/licenses/LICENSE-2.0
-# 
+#
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -17,7 +20,7 @@
 #
 #
 # Furthermore it is derived from the Python documentation examples thus
-# some of the code is Copyright © 2001-2013 Python Software
+# some of the code is Copyright © 2001-2023 Python Software
 # Foundation; All Rights Reserved
 #
 # http://docs.python.org/2/library/socketserver.html
@@ -28,11 +31,177 @@
 
 
 class MyWebServer(socketserver.BaseRequestHandler):
-
+    extension_code = {
+        'NOTHING': None,
+        'INDEX_PAGE': 'index.html',
+        'NOT_FOUND': '404'
+    }
+    SPACE = '\r\n'
+    END = '\r\n\r\n'
+    NOT_OKAY = -1
+    OKAY = 1
+
     def handle(self):
         self.data = self.request.recv(1024).strip()
-        print ("Got a request of: %s\n" % self.data)
-        self.request.sendall(bytearray("OK",'utf-8'))
+        print("Got a request of: %s\n" % self.data)
+
+        # Now that we have the response. We need to parse it. parse_request
+        # already decodes the data.
+        request_is_good = self.parse_request(self.data)
+
+        if request_is_good == self.NOT_OKAY:   # handling any POST/PUT/DELETE request
+            self.request.sendall(bytearray(
+                f"HTTP/1.1 405 METHOD NOT ALLOWED{self.SPACE}Content-Type: 'text/html'{self.SPACE}Content-Length: 42{self.SPACE} encoding=utf-8{self.END}405 METHOD NOT ALLOWED", 'utf-8'))
+            return
+
+        elif self.extension == 'index.html':  # directed to default index.html
+            self.serve_default_index()
+            return
+
+        elif self.extension == 'deep_index.html':
+            self.serve_deep_index()
+            return
+
+        elif self.extension == 'base.css':
+            self.serve_default_css()
+            return
+
+        elif self.extension == 'hardcode_index.html':
+            self.serve_hardcode_index()
+            return
+
+        elif self.extension == 'hardcode_deep_index.html':
+            self.serve_hardcode_deep_index()
+            return
+
+        elif self.parse_redirect() == 1:
+            self.serve_redirect(1)
+            return
+
+        elif self.extension == '404':
+            self.request.sendall(bytearray(
+                f"HTTP/1.1 404 NOT FOUND\r\ncontent-Type: text/html; encoding=utf-8\r\n\r\nThis works!", 'utf-8'))
+            return
+
+    def parse_request(self, data):
+        self.data = data.decode('utf-8')
+        # Is the message anything other than GET?
+        if self.data[:3] != 'GET':
+            return -1
+
+        self.extension = ''
+        # If root or directly requesting index.html
+        if self.parse_request_default_html():
+            self.extension = 'index.html'
+        elif self.parse_request_deep_html():
+            self.extension = 'deep_index.html'
+        elif self.parse_request_default_css():
+            self.extension = 'base.css'
+        elif self.parse_request_hardcode_html():
+            self.extension = 'hardcode_index.html'
+        elif self.parse_request_hardcode_deep_html():
+            self.extension = 'hardcode_deep_index.html'
+
+        # elif self.data[]
+
+        else:  # request is okay but cannot find the extension requested.
+            self.extension = '404'
+        return 1
+
+    """
+    Parse the request path methods. ---------------------------------
+    """
+
+    def parse_request_default_html(self):
+        if self.data[4:6] == '/ ' \
+                or self.data[4:17] == '/index.html/ ' \
+                or self.data[4:16] == '/index.html ':
+            return True
+        return False
+
+    def parse_request_deep_html(self):
+        end = self.data.find("HTTP")
+        if self.data[4:end] == '/deep/ ' \
+                or self.data[4:end] == '/deep/index.html '\
+                or self.data[4:end] == '/deep/index.html/ ':
+            return True
+        return False
+
+    def parse_request_hardcode_html(self):
+        end = self.data.find("HTTP")
+        end = end - 1
+        if self.data[4:end] == '/hardcode/'\
+                or self.data[4:end] == '/hardcode/index.html'\
+                or self.data[4:end] == '/hardcode/index.html/':
+            return True
+        return False
+
+    def parse_request_hardcode_deep_html(self):
+        end = self.data.find("HTTP")
+        end = end - 1
+        if self.data[4:end] == '/hardcode/deep/'\
+            or self.data[4:end] == '/hardcode/deep/index.html'\
+                or self.data[4:end] == '/hardcode/deep/index.html/':
+            return True
+        return False
+
+    def parse_redirect(self):
+        end = self.data.find("HTTP")
+        end = end - 1
+        if self.data[4:end] == '/deep':
+            return 1
+
+    def parse_request_default_css(self):
+        end = self.data.find("HTTP")
+        if self.data[4:end] == '/base.css ' \
+                or self.data[4:end] == '/base.css/ ':
+            return True
+        return False
+
+    """
+    Serve the page methods. ----------------------------------------
+    """
+
+    def serve_default_css(self):
+        with open(os.getcwd() + "/www/base.css", 'r') as file:
+            f_holder = file.read()
+            f_holder = f_holder.replace('\n', '')
+        self.request.sendall(bytearray(
+            f"HTTP/1.1 200 OK{self.SPACE}Content-Type: text/css{self.SPACE}{self.END}{f_holder}", 'utf-8'))
+
+    def serve_redirect(self, value):
+        if value == 1:
+            self.request.sendall(bytearray(
+                f"HTTP/1.1 301 MOVED PERMANENTLY{self.SPACE}Location: http://127.0.0.1:8080/deep/{self.SPACE}{self.END}", 'utf-8'))
+
+    def serve_hardcode_deep_index(self):
+        with open(os.getcwd() + "/www/hardcode/deep/index.html", 'r') as file:
+            f_holder = file.read()
+            f_holder = f_holder.replace('\n', '')
+        self.request.sendall(bytearray(
+            f"HTTP/1.1 200 OK{self.SPACE}Content-Type: text/html{self.SPACE}{self.END}{f_holder}", 'utf-8'))
+
+    def serve_deep_index(self):
+        with open(os.getcwd() + "/www/deep/index.html", 'r') as file:
+            f_holder = file.read()
+            f_holder = f_holder.replace('\n', '')
+        self.request.sendall(bytearray(
+            f"HTTP/1.1 200 OK{self.SPACE}Content-Type: text/html{self.SPACE}{self.END}{f_holder}", 'utf-8'))
+
+    def serve_default_index(self):
+        with open(os.getcwd() + "/www/index.html", 'r') as file:
+            f_holder = file.read()
+            f_holder = f_holder.replace('\n', '')
+        self.request.sendall(bytearray(
+            f"HTTP/1.1 200 OK{self.SPACE}Content-Type: text/html{self.SPACE}{self.END}{f_holder}", 'utf-8'))
+
+    def serve_hardcode_index(self):
+        with open(os.getcwd() + "/www/hardcode/index.html", 'r') as file:
+            f_holder = file.read()
+            f_holder = f_holder.replace('\n', '')
+        self.request.sendall(bytearray(
+            f"HTTP/1.1 200 OK{self.SPACE}Content-Type: text/html{self.SPACE}{self.END}{f_holder}", 'utf-8'))
+
 
 if __name__ == "__main__":
     HOST, PORT = "localhost", 8080

www/hardcode/deep.css

@@ -0,0 +1,4 @@
+h1 {
+    color:green;
+    text-align:center;
+}

www/hardcode/deep/deep.css

@@ -0,0 +1,4 @@
+h1 {
+    color:green;
+    text-align:center;
+}

www/hardcode/deep/index.html

@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html>
+<head>
+	<title>Deeper Example Page</title>
+        <meta http-equiv="Content-Type"
+        content="text/html;charset=utf-8"/>
+        <!-- check conformance at http://validator.w3.org/check -->
+        <link rel="stylesheet" type="text/css" href="deep.css">
+</head>
+
+<body>
+	<div class="eg">
+		<h1>An Example of a Deeper Page</h1>
+		<ul>
+			<li>It works?</li>
+                        <li><a href="../index.html">A page below!</a></li>
+		</ul>
+	</div>
+</body>
+</html> 

www/hardcode/index.html

@@ -0,0 +1,20 @@
+<!DOCTYPE html>
+<html>
+<head>
+	<title>Deeper Example Page</title>
+        <meta http-equiv="Content-Type"
+        content="text/html;charset=utf-8"/>
+        <!-- check conformance at http://validator.w3.org/check -->
+        <link rel="stylesheet" type="text/css" href="deep.css">
+</head>
+
+<body>
+	<div class="eg">
+		<h1>An Example of a Deeper Page</h1>
+		<ul>
+			<li>It works?</li>
+                        <li><a href="../index.html">A page below!</a></li>
+		</ul>
+	</div>
+</body>
+</html>