files for lesson 3 assignment "socket http server"

Author: nskvarch

http_server.py

@@ -1,6 +1,9 @@
 import socket
 import sys
 import traceback
+import os
+import mimetypes
+
 
 def response_ok(body=b"This is a minimal response", mimetype=b"text/plain"):
     """
@@ -20,20 +23,34 @@ def response_ok(body=b"This is a minimal response", mimetype=b"text/plain"):
     """
 
     # TODO: Implement response_ok
-    return b""
+    return b"\r\n".join([
+        b"HTTP/1.1 200 OK",
+        b"Content-type: " + mimetype,
+        b"",
+        body,
+    ])
+
 
 def response_method_not_allowed():
     """Returns a 405 Method Not Allowed response"""
 
     # TODO: Implement response_method_not_allowed
-    return b""
+    return b"\r\n".join([
+        b"HTTP/1.1 405 Method Not Allowed",
+        b"",
+        b"You can't do that here!"
+    ])
 
 
 def response_not_found():
     """Returns a 404 Not Found response"""
 
     # TODO: Implement response_not_found
-    return b""
+    return b"\r\n".join([
+        b"HTTP/1.1 404 Not Found",
+        b"",
+        b"What you are looking for does not seem to exist!"
+    ])
 
 
 def parse_request(request):
@@ -45,7 +62,13 @@ def parse_request(request):
     """
 
     # TODO: implement parse_request
-    return ""
+    method, path, version = request.split("\r\n")[0].split(" ")
+
+    if method != "GET":
+        raise NotImplementedError
+
+    return path
+
 
 def response_path(path):
     """
@@ -85,9 +108,20 @@ def response_path(path):
     # If the path is "make_time.py", then you may OPTIONALLY return the
     # result of executing `make_time.py`. But you need only return the
     # CONTENTS of `make_time.py`.
-    
-    content = b"not implemented"
-    mime_type = b"not implemented"
+
+    req_path = os.path.abspath(".") + "/webroot" + path
+
+    if os.path.isdir(req_path):
+        str_conv = " \n".join(os.listdir(req_path))
+        content = str_conv.encode()
+        mime_type = b"text/plain"
+    elif os.path.isfile(req_path):
+        content = open(req_path, "rb").read()
+        mime_type = mimetypes.guess_type(req_path)[0].encode()
+    else:
+        content = b"NotImplamented"
+        mime_type = b"NotImplamented"
+        raise NameError
 
     return content, mime_type
 
@@ -114,24 +148,31 @@ def server(log_buffer=sys.stderr):
 
                     if '\r\n\r\n' in request:
                         break
-		
 
                 print("Request received:\n{}\n\n".format(request))
 
                 # TODO: Use parse_request to retrieve the path from the request.
-
-                # TODO: Use response_path to retrieve the content and the mimetype,
-                # based on the request path.
-
-                # TODO; If parse_request raised a NotImplementedError, then let
-                # response be a method_not_allowed response. If response_path raised
-                # a NameError, then let response be a not_found response. Else,
-                # use the content and mimetype from response_path to build a 
-                # response_ok.
-                response = response_ok(
-                    body=b"Welcome to my web server",
-                    mimetype=b"text/plain"
-                )
+                try:
+                    path = parse_request(request)
+
+                    content, mime_type = response_path(path)
+
+                    # TODO: Use response_path to retrieve the content and the mimetype,
+                    # based on the request path.
+
+                    # TODO; If parse_request raised a NotImplementedError, then let
+                    # response be a method_not_allowed response. If response_path raised
+                    # a NameError, then let response be a not_found response. Else,
+                    # use the content and mimetype from response_path to build a
+                    # response_ok.
+                    response = response_ok(
+                        body=content,
+                        mimetype=mime_type
+                    )
+                except NotImplementedError:
+                    response = response_method_not_allowed()
+                except NameError:
+                    response = response_not_found()
 
                 conn.sendall(response)
             except: