portal-oddajanje-solar/app.py

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import os
import re
import hashlib
import time
from pathlib import Path
from flask import Flask, render_template, request
from flask_dropzone import Dropzone
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from smtplib import SMTP_SSL as SMTP
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enabled_filetypes = ['txt', 'csv', 'pdf', 'doc', 'docx', 'xls', 'xlsx', 'ppt', 'pptx']
regex_email = re.compile('^[a-z0-9]+[\._]?[a-z0-9]+[@]\w+[.]\w{2,3}$')
basedir = Path(__file__).resolve().parent
upload_dir = basedir / 'uploads'
if not upload_dir.exists:
upload_dir.mkdir()
app = Flask(__name__)
app.config.update(
UPLOADED_PATH = upload_dir,
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MAX_CONTENT_LENGTH = 1000000000, # 1GB
TEMPLATES_AUTO_RELOAD = True
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)
dropzone = Dropzone(app)
@app.route('/')
def index():
return render_template('index.html')
@app.route('/upload', methods=['POST'])
def handle_upload():
files = request.files
if len(files) > 20:
return 'Naložite lahko do 20 datotek hkrati.', 400
elif len(files) < 1:
return 'Priložena ni bila nobena datoteka.', 400
err = check_suffixes(files)
if err:
return err, 400
err = check_form(request.form)
if err:
return err, 400
file_hashes = create_file_hashes(files)
store_metadata(request.form, file_hashes)
store_datafiles(files, file_hashes)
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send_confirm_mail(request.form.get('email'))
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return 'Uspešno ste oddali datotek(e). Št. datotek: {}'.format(len(files))
def check_suffixes(files):
for key, f in files.items():
if key.startswith('file'):
suffix = f.filename.split('.')[-1]
if suffix not in enabled_filetypes:
return 'Datoteka "{}" ni pravilnega formata.'.format(f.filename)
return None
def check_form(form):
tip = form.get('tip')
ime = form.get('ime')
podjetje = form.get('podjetje')
email = form.get('email')
telefon = form.get('telefon')
if tip not in ['enojez', 'prevodi']:
return 'Napačen tip besedila.'
if len(ime) > 100:
return 'Predolgo ime.'
if len(podjetje) > 100:
return 'Predolgo ime institucije'
if len(email) > 100:
return 'Predolgi email naslov'
elif not re.search(regex_email, email):
return 'Email napačnega formata.'
if len(telefon) > 100:
return 'Predolga telefonska št.'
return None
def create_file_hashes(files):
res = dict()
for key, f in files.items():
if key.startswith('file'):
h = hashlib.md5(f.filename.encode())
h.update(f.stream.read())
res[key] = h.hexdigest()
f.seek(0)
return res
def store_metadata(form, file_hashes):
base = app.config['UPLOADED_PATH'] / 'meta'
if not base.exists():
base.mkdir()
tip = form.get('tip')
ime = form.get('ime')
podjetje = form.get('podjetje')
email = form.get('email')
telefon = form.get('telefon')
# This hash serves as an identifier for the whole upload.
metahash = hashlib.md5((tip+ime+podjetje+email+telefon).encode())
# Include file hashes to avoid metafile name collisions if they have the same form values,
# but different data files. Sort hashes first so upload order doesn't matter.
sorted_f_hashes = list(file_hashes.values())
sorted_f_hashes.sort()
metahash.update(''.join(sorted_f_hashes).encode())
metahash = metahash.hexdigest()
timestamp = int(time.time())
filename = str(timestamp) + '-' + email + '-' + metahash + '.meta'
path = base / filename
with path.open('w') as f:
f.write('tip=' + tip)
f.write('\nime=' + ime)
f.write('\npodjetje=' + podjetje)
f.write('\nemail=' + email)
f.write('\ndatoteke=' + str(sorted_f_hashes))
def store_datafiles(files, file_hashes):
base = app.config['UPLOADED_PATH'] / 'files'
if not base.exists():
base.mkdir()
for key, f in files.items():
if key.startswith('file'):
path = base / file_hashes[key]
if not path.exists():
path.mkdir()
f.save(path / f.filename)
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def send_confirm_mail(email):
#msg = MIMEText(content, text_subtype)
#msg['Subject'] = "TEST"
#msg['From'] = sender # some SMTP servers will do this automatically, not all
#conn = SMTP(SMTPserver)
#conn.set_debuglevel(False)
#conn.login(USERNAME, PASSWORD)
#try:
# conn.sendmail(sender, destination, msg.as_string())
#finally:
# conn.quit()
pass
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if __name__ == '__main__':
app.run(debug=True)