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WebAppEncSSE.py
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WebAppEncSSE.py
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#!/usr/bin/env python
"""Simple HTTP Server With Upload.
This module builds on BaseHTTPServer by implementing the standard GET
and HEAD requests in a fairly straightforward manner.
"""
__version__ = "0.1"
__all__ = ["SimpleHTTPRequestHandler"]
import os
import posixpath
import BaseHTTPServer
import urllib
import cgi
import shutil
import mimetypes
import re
import boto3
import botocore
try:
from cStringIO import StringIO
except ImportError:
from StringIO import StringIO
GlobalAcc = boto3.client('sts').get_caller_identity().get('Account')
s3 = boto3.resource('s3')
my_bucket = s3.Bucket('kmsworkshop-'+GlobalAcc)
class SimpleHTTPRequestHandler(BaseHTTPServer.BaseHTTPRequestHandler):
"""Simple HTTP request handler with GET/HEAD/POST commands.
This serves files from the current directory and any of its
subdirectories. The MIME type for files is determined by
calling the .guess_type() method. And can reveive file uploaded
by client.
The GET/HEAD/POST requests are identical except that the HEAD
request omits the actual contents of the file.
"""
server_version = "SimpleHTTPWithUpload/" + __version__
def do_GET(self):
"""Serve a GET request."""
f = self.send_head()
if f:
self.copyfile(f, self.wfile)
f.close()
def do_HEAD(self):
"""Serve a HEAD request."""
f = self.send_head()
if f:
f.close()
def do_POST(self):
"""Serve a POST request."""
r, info = self.deal_post_data()
print(r, info, "by: ", self.client_address)
f = StringIO()
f.write('<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">')
f.write("<html>\n<title>Upload Result Page</title>\n")
f.write("<body>\n<h2>Upload Result Page</h2>\n")
f.write("<hr>\n")
if r:
f.write("<strong><font color=\"red\">Success: </font></strong>")
else:
f.write("<strong>Failed:</strong>")
f.write(info)
f.write("<br><a href=\"%s\">back </a>" % self.headers['referer'])
f.write("here</a>.</small></body>\n</html>\n")
length = f.tell()
f.seek(0)
self.send_response(200)
self.send_header("Content-type", "text/html")
self.send_header("Content-Length", str(length))
self.end_headers()
if f:
self.copyfile(f, self.wfile)
f.close()
def deal_post_data(self):
boundary = self.headers.plisttext.split("=")[1]
remainbytes = int(self.headers['content-length'])
line = self.rfile.readline()
remainbytes -= len(line)
if not boundary in line:
return (False, "Content NOT begin with boundary")
line = self.rfile.readline()
remainbytes -= len(line)
fn = re.findall(r'Content-Disposition.*name="file"; filename="(.*)"', line)
if not fn:
return (False, "Can't find out file name...")
path = self.translate_path(self.path)
fn = os.path.join(path, fn[0])
line = self.rfile.readline()
remainbytes -= len(line)
line = self.rfile.readline()
remainbytes -= len(line)
try:
out = open(fn, 'wb')
except IOError:
return (False, "Can't create file to write, do you have permission to write?")
preline = self.rfile.readline()
remainbytes -= len(preline)
while remainbytes > 0:
line = self.rfile.readline()
remainbytes -= len(line)
if boundary in line:
preline = preline[0:-1]
# This is the end of the file being uploaded
if preline.endswith('\r'):
preline = preline[0:-1]
out.write(preline)
out.close()
# we got the file in the server, Uploading it now to S3
s3c=boto3.client('s3')
data = open(fn, 'rb')
filena = fn.split("/")[-1]
BUCKET = 'kmsworkshop-'+GlobalAcc
# provide the ID of key to use for Server Side Encryption
keyKMS = GlobalKey
uplo = s3c.put_object(Bucket=BUCKET,
Key=filena,
Body=data,
ServerSideEncryption='aws:kms',
SSEKMSKeyId=keyKMS)
if uplo:
print("Upload with Server Side Encrytion to S3 OK")
else:
print("Upload with Server Side Encryption to S3 Error")
# the file is uplodaded to S3, so we erase it from the local server
os.remove(fn)
return (True, "File '%s' upload success!" % filena)
else:
out.write(preline)
preline = line
return (False, "Unexpect Ends of data.")
def send_head(self):
"""Common code for GET and HEAD commands.
This sends the response code and MIME headers.
Return value is either a file object (which has to be copied
to the outputfile by the caller unless the command was HEAD,
and must be closed by the caller under all circumstances), or
None, in which case the caller has nothing further to do.
"""
path = self.translate_path(self.path)
f = None
if os.path.isdir(path):
if not self.path.endswith('/'):
# redirect browser - doing basically what apache does
self.send_response(301)
self.send_header("Location", self.path + "/")
self.end_headers()
return None
for index in "index.html", "index.htm":
index = os.path.join(path, index)
if os.path.exists(index):
path = index
break
else:
return self.list_directory(path)
ctype = self.guess_type(path)
# Requesting a file in S3, let's get the file if the instance has the right role
# file will be downloaded from S3 into the local system and server from the local system
if 'S3' in path:
pathsplit = path.split('/')
s3path = pathsplit[-1]
#remake the path without the 'S3' tag
path = pathsplit[0]+ '/' + pathsplit[1]+ '/' + pathsplit[2] + '/' +pathsplit[3]+ '/' + "localfile-"+pathsplit[-1]
KEY = str(s3path)
try:
my_bucket.download_file(KEY, "localfile-"+KEY)
except botocore.exceptions.ClientError as e:
if e.response['Error']['Code'] == "404":
print("The S3 object does not exist.")
else:
raise
try:
# Always read in binary mode. Opening files in text mode may cause
# newline translations, making the actual size of the content
# transmitted *less* than the content-length!
f = open(path, 'rb')
except IOError:
self.send_error(404, "File not found")
return None
self.send_response(200)
self.send_header("Content-type", ctype)
fs = os.fstat(f.fileno())
self.send_header("Content-Length", str(fs[6]))
self.send_header("Last-Modified", self.date_time_string(fs.st_mtime))
self.end_headers()
return f
def list_directory(self, path):
"""Helper to produce a directory listing (absent index.html).
Return value is either a file object, or None (indicating an
error). In either case, the headers are sent, making the
interface the same as for send_head().
"""
try:
list = os.listdir(path)
except os.error:
self.send_error(404, "No permission to list directory")
return None
list.sort(key=lambda a: a.lower())
f = StringIO()
displaypath = cgi.escape(urllib.unquote(self.path))
f.write('<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">')
f.write("<html>\n<title>KMS Workshop - Sample WebApp S3 Uploader</title>\n")
f.write("<style> .center { display: block; margin-left: auto; margin-right: auto;}</style>")
f.write("<body>\n<img src=\"https://github.com/DanGOTO100/Draft-AWS-KMS-Workshop/blob/master/res/IconWebApp.png?raw=true\" alt=\"KMSicon\" class=\"center\">\n<h2><center>KMS Workshop - Sample WebApp S3 Uploader</center></h2>\n")
f.write("<hr>\n")
f.write("<h2>File Upload <font color=red>-Now Encrypted- </font>here:</h2>\n")
f.write("<form ENCTYPE=\"multipart/form-data\" method=\"post\">")
f.write("<input name=\"file\" type=\"file\"/>")
f.write("<input type=\"submit\" value=\"upload\"/></form>\n")
f.write("<hr><h2>FILES in S3 - Bucket: kms-workshop</h2>\n<ul>\n")
for key in my_bucket.objects.all():
f.write('<li><a href="%s">%s</a>\n'
% ('S3/'+key.key, 'S3//'+key.key))
f.write("</ul><hr><h2>FILES in Local Server</h2>\n<ul>\n")
for name in list:
fullname = os.path.join(path, name)
displayname = linkname = name
# Append / for directories or @ for symbolic links
if os.path.isdir(fullname):
displayname = name + "/"
linkname = name + "/"
if os.path.islink(fullname):
displayname = name + "@"
# Note: a link to a directory displays with @ and links with /
f.write('<li><a href="%s">%s</a>\n'
% (urllib.quote(linkname), cgi.escape(displayname)))
f.write("</ul>\n<hr>\n</body>\n</html>\n")
length = f.tell()
f.seek(0)
self.send_response(200)
self.send_header("Content-type", "text/html")
self.send_header("Content-Length", str(length))
self.end_headers()
return f
def translate_path(self, path):
"""Translate a /-separated PATH to the local filename syntax.
Components that mean special things to the local file system
(e.g. drive or directory names) are ignored. (XXX They should
probably be diagnosed.)
"""
# abandon query parameters
path = path.split('?',1)[0]
path = path.split('#',1)[0]
path = posixpath.normpath(urllib.unquote(path))
words = path.split('/')
words = filter(None, words)
path = os.getcwd()
for word in words:
drive, word = os.path.splitdrive(word)
head, word = os.path.split(word)
if word in (os.curdir, os.pardir): continue
path = os.path.join(path, word)
return path
def copyfile(self, source, outputfile):
"""Copy all data between two file objects.
The SOURCE argument is a file object open for reading
(or anything with a read() method) and the DESTINATION
argument is a file object open for writing (or
anything with a write() method).
The only reason for overriding this would be to change
the block size or perhaps to replace newlines by CRLF
-- note however that this the default server uses this
to copy binary data as well.
"""
shutil.copyfileobj(source, outputfile)
def guess_type(self, path):
"""Guess the type of a file.
Argument is a PATH (a filename).
Return value is a string of the form type/subtype,
usable for a MIME Content-type header.
The default implementation looks the file's extension
up in the table self.extensions_map, using application/octet-stream
as a default; however it would be permissible (if
slow) to look inside the data to make a better guess.
"""
base, ext = posixpath.splitext(path)
if ext in self.extensions_map:
return self.extensions_map[ext]
ext = ext.lower()
if ext in self.extensions_map:
return self.extensions_map[ext]
else:
return self.extensions_map['']
if not mimetypes.inited:
mimetypes.init() # try to read system mime.types
extensions_map = mimetypes.types_map.copy()
extensions_map.update({
'': 'application/octet-stream', # Default
'.py': 'text/plain',
'.c': 'text/plain',
'.h': 'text/plain',
})
def test(HandlerClass = SimpleHTTPRequestHandler,
ServerClass = BaseHTTPServer.HTTPServer):
BaseHTTPServer.test(HandlerClass, ServerClass)
if __name__ == '__main__':
GlobalKey = raw_input('Enter the KeyId of the CMK to use with SSE: ')
test()