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assist.py
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assist.py
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import random
import string
from functools import wraps
from flask import request, redirect, url_for, session
def login_required(f):
@wraps(f)
def decorated_function(*args, **kwargs):
if session.get("user_id") is None:
return redirect(url_for('login'))
return f(*args, **kwargs)
return decorated_function
def rand_str_gen(digit=7):
chars = ""
for i in range(digit):
chars += random.choice(string.ascii_letters + string.digits)
return chars
def check_url(url):
import re
regex = re.compile(
r'^(?:http|ftp)s?://'
r'(?:(?:[A-Z0-9](?:[A-Z0-9-]{0,61}[A-Z0-9])?\.)+(?:[A-Z]{2,6}\.?|[A-Z0-9-]{2,}\.?)|'
r'localhost|'
r'\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})'
r'(?::\d+)?'
r'(?:/?|[/?]\S+)$', re.IGNORECASE)
return (re.match(regex, url) is not None)