import imghdr
import os
from flask import Flask, render_template, request, redirect, url_for, abort, \
send_from_directory
from werkzeug.utils import secure_filename
app = Flask(__name__)
app.config['MAX_CONTENT_LENGTH'] = 2 * 1024 * 1024
app.config['UPLOAD_EXTENSIONS'] = ['.jpg', '.png', '.gif']
app.config['UPLOAD_PATH'] = 'uploads'
def validate_image(stream):
header = stream.read(512)
stream.seek(0)
format = imghdr.what(None, header)
if not format:
return None
return '.' + (format if format != 'jpeg' else 'jpg')
@app.errorhandler(413)
def too_large(e):
return "File is too large", 413
@app.route('/')
def index():
files = os.listdir(app.config['UPLOAD_PATH'])
return render_template('index.html', files=files)
@app.route('/', methods=['POST'])
def upload_files():
uploaded_file = request.files['file']
filename = secure_filename(uploaded_file.filename)
if filename != '':
file_ext = os.path.splitext(filename)[1]
if file_ext not in app.config['UPLOAD_EXTENSIONS'] or \
file_ext != validate_image(uploaded_file.stream):
return "Invalid image", 400
uploaded_file.save(os.path.join(app.config['UPLOAD_PATH'], filename))
return '', 204
@app.route('/uploads/<filename>')
def upload(filename):
return send_from_directory(app.config['UPLOAD_PATH'], filename)
