/
uploader.py
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/
uploader.py
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'''
SuperUpload
This file includes all controller logic
as well as WSGI application entry point.
'''
# Standard library imports
import os
import json
# Library imports
from werkzeug.wrappers import Request, Response, Headers
from werkzeug.wsgi import wrap_file
# Local imports
import router
import session
import filehelper
from wrappers import StreamWrapper
import config
# Main entry point for the WSGI application
@Request.application
def application(request):
return router.route(request)
def index(request):
f = open('index.html', 'r')
output = f.read()
f.close()
return Response(output, content_type="text/html")
# Creates a session and sends the ID to the client as JSON
def session_create(request):
sessionid = session.create()
return Response(json.dumps({'status': 'success',
'sessionid': sessionid}))
# File upload handler
def upload(request):
if request.method != 'POST':
return not_found()
if 'sessionid' not in request.args:
return Response('You must submit a sessionid for your upload.')
sessionid = request.args['sessionid']
filename = filehelper.get_filename(config.get_upload_path())
session.set(sessionid, {'progress': 0,
'upload_status': 'uploading',
'url': '',
'filename': filename})
request.environ['wsgi.input'] = StreamWrapper(request.environ['wsgi.input'],
request.environ['CONTENT_LENGTH'],
sessionid)
# Save the file locally
f = request.files['file']
path = config.get_upload_path() + filename
f.save(path)
f.close()
filehelper.save_metadata(filename, {'title': f.filename, 'description': ''})
session.set(sessionid, {'progress': 100,
'upload_status': 'complete',
'url': request.host_url + 'file/' + filename,
'filename': filename})
return Response('<!DOCTYPE html><html><head></head><body>\
<p>Upload OK</p></body>')
# Sends file upload progress to the client as JSON
def progress(request):
if 'sessionid' not in request.args:
return Response(json.dumps({'status': 'error',
'message': 'Sessionid missing.'}))
obj = session.get(request.args['sessionid'])
if obj is None:
return Response(json.dumps({'status': 'error',
'message': 'No such session.'}))
obj['status'] = 'success'
return Response(json.dumps(obj))
def save_description(request):
if request.method != 'POST':
return not_found()
if 'sessionid' not in request.form or 'description' not in request.form:
return Response(json.dumps({'status': 'error',
'message': 'Could not save description. Required parameters missing.'}))
description = request.form['description']
obj = session.get(request.form['sessionid'])
if obj is None or 'filename' not in obj:
return Response(json.dumps({'status': 'error',
'message': 'Could not save metadata file.'}))
filename = obj['filename']
metadata = filehelper.save_metadata(filename,
{'description': description})
try:
title = metadata['title']
url = obj['url']
except KeyError:
title = '(upload in progress...)'
url = ''
return Response(json.dumps({'status': 'success',
'title': title,
'description': description,
'url': url}))
return Response(json.dumps({'status': 'success',
'title': title,
'description': description,
'url': obj['url']}))
# Sends an uploaded file to the client
def get_file(request, filename):
filename = filehelper.safe_filename(filename)
try:
f = open(config.get_upload_path() + filename, 'r')
except IOError:
return not_found(request)
file_iterator = wrap_file(request.environ, f)
try:
metadata = filehelper.get_metadata(filename)
title = metadata['title']
except:
title = filename
headers = Headers()
headers.add('Content-Type', 'application/octet-stream')
headers.add('Content-Disposition', 'attachment', filename=title)
headers.add('Content-Length', os.fstat(f.fileno()).st_size)
return Response(response=file_iterator, headers=headers)
# 404!
def not_found(request):
return Response('Could not find the path ' + request.path, status=404)
# Routes are defined here
def config_routes():
router.add_route('/', index)
router.add_route('/session/create', session_create)
router.add_route('/upload', upload)
router.add_route('/progress', progress)
router.add_route('/savedescription', save_description)
router.add_route('/file/*', get_file)
router.add_route('404', not_found)
config_routes()
# Only for starting the development server (will block on file upload!)
if __name__ == '__main__':
port = int(os.environ.get('PORT', 5000))
from werkzeug.serving import run_simple
run_simple('0.0.0.0', port, application, use_reloader=True)