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Copy pathhttpserver.py
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326 lines (255 loc) · 12 KB
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#!/usr/bin/python
import os
import socket
import mimetypes
from tcpserver import *
from datetime import datetime
import cookies
from linecache import getline
import hashlib
import random
import gzip
global cookie_status_flag
cookie_status_flag = 0
class HTTPServer(TCPServer):
headers = {
'Server': 'CNServer',
'Content-Type': 'text/html',
}
status_codes = {
200: 'OK',
404: 'Not Found',
501: 'Not Implemented',
202: 'Accepted',
204: 'No Content',
201: 'Created',
403: 'Forbidden',
304: 'Not Modified'
}
def handle_request(self, data):
request = HTTPRequest(data)
try:
handler = getattr(self, 'handle_%s' % request.method)
except AttributeError:
handler = self.HTTP_501_handler
logg.lprint(1, (f'{request.method} {request.uri}'))
response, connectiontype = handler(request)
return response, connectiontype
def response_line(self, status_code):
reason = self.status_codes[status_code]
response_line = 'HTTP/1.1 %s %s\r\n' % (status_code, reason)
logg.lprint(1, (response_line))
return response_line.encode()
def response_headers(self, extra_headers=None):
headers_copy = self.headers.copy()
if extra_headers:
headers_copy.update(extra_headers)
headers = ''
for h in headers_copy:
headers += '%s: %s\r\n' % (h, headers_copy[h])
return headers.encode()
def handle_OPTIONS(self, request):
response_line = self.response_line(200)
extra_headers = {'Allow': 'OPTIONS, GET, HEAD, PUT, POST, DELETE'}
response_headers = self.response_headers(extra_headers)
blank_line = b'\r\n'
return b''.join([response_line, response_headers, blank_line])
def handle_GET(self, request):
path = '../www/' + request.uri.strip('/')
if not request.uri.strip('/'):
path = '../www/' + 'index.html'
if 'If-None-Match' in request.other_headers.keys():
Etag = request.other_headers['If-None-Match']
request.other_headers.pop('If-None-Match')
request.other_headers['Etag'] = Etag
else:
Etag = hashlib.md5(os.urandom(32)).hexdigest()
request.other_headers['Etag'] = Etag
if os.path.exists(path) and not os.path.isdir(path):
response_line = self.response_line(200)
content_type = mimetypes.guess_type(path)[0] + '; charset=utf-8' or 'text/html' + '; charset=utf-8'
stat = os.stat(path)
last_modified = datetime.fromtimestamp(stat.st_mtime).strftime('%d %b %Y %H:%M:%S GMT')
with open(path, 'rb') as f:
response_body = f.read()
md5 = hashlib.md5(response_body).hexdigest()
f.close()
response_body = gzip.compress(response_body)
content_length = len(response_body)
extra_headers = {'Content-Length': content_length, 'Content-Type': content_type, 'Content-Encoding': 'gzip', 'Last-Modified': last_modified, 'Etag': Etag,'Content-md5': md5}
else:
response_line = self.response_line(404)
response_body = b'<h1>404 Not Found</h1>'
response_body = gzip.compress(response_body)
content_length = len(response_body)
md5 = hashlib.md5(response_body).hexdigest()
extra_headers = {'Content-Length': content_length, 'Content-Type': 'text/html; charset=utf-8', 'Content-Encoding': 'gzip', 'Etag': Etag, 'Content-md5': md5}
cookie_string = 'Cookie'
if 'Cookie' in request.other_headers.keys() and os.path.exists(f'../cookies/{request.other_headers[cookie_string]}'):
edate = getline(f'../cookies/{request.other_headers[cookie_string]}', 2).strip('\n')
edate = datetime.strptime(edate[0:10], '%Y-%m-%d')
if (edate - datetime.now()).days >0:
cookie_status_flag = 1
path = '../www/' + 'afterlogin.html'
with open(path, 'rb') as f:
response_body = f.read()
f.close()
response_body = gzip.compress(response_body)
extra_headers['Content-Length'] = len(response_body)
else:
os.remove(f'../cookies/{request.other_headers[cookie_string]}')
extra_headers['set-cookie'] = cookies.set_cookie(path)
request.other_headers.pop('Cookie')
elif path == '../www/login.html':
extra_headers['set-cookie'] = cookies.set_cookie(path)
else:
pass
today = datetime.now()
d1 = "Date: " + today.strftime('%a') + ', '
d1 += today.strftime("%d %b %Y %H:%M:%S GMT")
d1 = d1.encode()
response_headers = self.response_headers(extra_headers)
other_headers = self.response_headers(request.other_headers)
blank_line = b'\r\n'
response = b''.join([response_line, response_headers, d1, blank_line, other_headers, blank_line, response_body])
return response, request.other_headers['Connection']
def handle_HEAD(self, request):
path = '../www/' + request.uri.strip('/')
if not path:
path = '../www/' + 'index.html'
if os.path.exists(path) and not os.path.isdir(path):
response_line = self.response_line(200)
content_type = mimetypes.guess_type(path)[0] + '; charset=utf-8' or 'text/html' + '; charset=utf-8'
content_length = os.path.getsize(path)
response_body = b''
extra_headers = {'Content-Length': content_length, 'Content-Type': content_type}
response_headers = self.response_headers(extra_headers)
else:
response_line = self.response_line(404)
response_body = b'<h1>404 Not Found</h1>'
content_length = len(response_body.decode())
md5 = hashlib.md5(response_body).hexdigest()
extra_headers = {'Content-Length': content_length, 'Content-Type': 'txt/html; charset=utf-8', 'Content-Encoding': 'gzip', 'Content-md5': md5}
response_headers = self.response_headers(extra_headers)
today = datetime.now()
d1 = "Date: " + today.strftime('%a') + ', '
d1 += today.strftime("%d %b %Y %H:%M:%S GMT")
d1 = d1.encode()
other_headers = self.response_headers(request.other_headers)
blank_line = b'\r\n'
response = b''.join([response_line, response_headers, d1, blank_line, other_headers, blank_line, response_body])
return response, request.other_headers['Connection']
def handle_DELETE(self, request):
path = '../www/' + request.uri.strip('/')
if os.path.exists(path):
if(os.access(path, os.W_OK)):
os.remove(path)
response_line = self.response_line(204)
response_body = ""
extra_headers = {'Content-Length': 0,'Content-Type': 'txt/html; charset=utf-8', 'Content-Encoding': 'gzip'}
response_headers = self.response_headers(extra_headers)
if(os.path.exists(path)):
response_line = self.response_line(202)
response_body = ""
else:
response_line = self.response_line(403)
response_headers = self.response_headers()
response_body = ""
else:
response_headers = self.response_headers()
response_line = self.response_line(404)
response_body = ""
today = datetime.now()
response_body = response_body.encode()
d1 = today.strftime('%a') + ', ' + today.strftime("%d %b %Y %H:%M:%S GMT")
response_fields = "Date: %s\r\n" %(d1)
response_fields = response_fields.encode()
breakline = b'\r\n'
other_headers = self.response_headers(request.other_headers)
response = b"".join([response_line, response_headers, response_fields, other_headers, breakline, response_body])
return response, request.other_headers['Connection']
def handle_PUT(self, request):
path = '../www/' + request.uri.strip('/')
data = request.request_data
if os.path.exists(path):
if(os.access(path, os.W_OK)):
#updated but entity body not returned
response_line = self.response_line(204)
#overwrite file
fr = open(path, 'wb')
fr.write(data)
fr.close()
else:
response_line = self.response_line(403)
else:
response_line = self.response_line(201)
f1 = open(path, 'wb')
f1.write(data)
f1.close()
#Sun, 06 Nov 1994 08:49:37 GMT
today = datetime.now()
d1 = "Date: " + today.strftime('%a') + ', '
d1 += today.strftime("%d %b %Y %H:%M:%S GMT")
d1 = d1.encode()
breakline = b'\r\n'
uri = request.uri.encode()
extra_headers = {'Content-Location': request.uri}
response_headers = self.response_headers(extra_headers)
other_headers = self.response_headers(request.other_headers)
response = b"".join([response_line , d1 , response_headers, other_headers, breakline])
return response, request.other_headers['Connection']
def handle_POST(self, request):
path = '../www/' + request.uri.strip('/')
data = request.request_data
if 'Content-Type' in request.other_headers:
if(request.other_headers["Content-Type"] == "application/x-www-form-urlencoded"):
data = request.request_data.split('&')
elif(request.other_headers["Content-Type"].split(';')[0] == "multipart/form-data"):
separator = request.other_headers["Content-Type"].split(';')[1]
raw_data = request.request_data.split(f'--{separator}')
data = ''
for x in range(1, len(raw_data)-1):
d = raw_data[x].split('; ')
for y in range(1, len(d)):
data += d[y].replace('\r\n', ' ')
else:
data = request.request_data
if os.path.exists(path):
if(os.access(path, os.W_OK)):
try:
words = request.uri.split('(')
count = int(words[1][0])
count += 1
path = words[0] + '(' + str(count) + words[1:]
except:
words = request.uri.split('.')
path = words[0] + '(1).' + words[1]
response_line = self.response_line(204)
#content type checking
fp = open(path, 'wb')
fp.write(data)
fp.close()
else:
response_line = self.response_line(403)
else:
response_line = self.response_line(201)
f1 = open(path, 'wb')
f1.write(data)
f1.close()
#Sun, 06 Nov 1994 08:49:37 GMT
today = datetime.now()
d1 = "Date: " + today.strftime('%a') + ', '
d1 += today.strftime("%d %b %Y %H:%M:%S GMT")
d1 = d1.encode()
breakline = b'\r\n'
other_headers = self.response_headers(request.other_headers)
uri = request.uri.encode()
response = b"".join([response_line , d1 , other_headers, breakline , uri])
return response, request.other_headers['Connection']
def HTTP_501_handler(self, request):
response_line = self.response_line(status_code=501)
response_headers = self.response_headers()
blank_line = b'\r\n'
response_body = b'<h1>501 Not Implemented</h1>'
other_headers = self.response_headers(request.other_headers)
return b"".join([response_line, response_headers, other_headers, blank_line, response_body]), 'Close'
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