139 lines
4.8 KiB
Python
139 lines
4.8 KiB
Python
from flask import *
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from Login import check_username_availability, verify_user, add_user, get_expiry_date, change_password, WarningMessage
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# 初始化蓝图
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accountService = Blueprint("accountService", __name__)
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### Sign-up, login, logout ###
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@accountService.route("/signup", methods=['GET', 'POST'])
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def signup():
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'''
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注册
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:return: 根据注册是否成功返回不同界面
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'''
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if request.method == 'GET':
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# GET方法直接返回注册页面
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return render_template('signup.html')
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elif request.method == 'POST':
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# POST方法需判断是否注册成功，再根据结果返回不同的内容
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username = escape(request.form['username'])
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password = escape(request.form['password'])
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#! 添加如下代码为了过滤注册时的非法字符
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warn = WarningMessage(username)
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if str(warn) != 'OK':
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return str(warn)
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# return jsonify({'status': '3', 'warn': str(warn)})
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available = check_username_availability(username)
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if not available: # 用户名不可用
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flash('用户名 %s 已经被注册。' %(username))
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return render_template('signup.html')
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elif len(password.strip()) < 8: # 密码过短
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return '密码少于8位。'
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# return jsonify({'status': '0'})
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has_specialchar = False
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specialchar_list = ['+', '-', '*', '/', '_', '&', '%', ',']
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for c in password.strip():
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if c in specialchar_list:
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has_specialchar = True
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break
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if not has_specialchar:
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return '密码必须包含特殊字符'
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has_upper_letter = False
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has_lower_letter = False
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for c in password.strip():
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if c.isupper():
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has_upper_letter = True
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elif c.islower():
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has_lower_letter = True
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has_both_letter = has_upper_letter and has_lower_letter
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if has_both_letter:
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break
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if not has_both_letter:
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return '密码必须同时包含大写字母和小写字母'
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else: # 添加账户信息
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add_user(username, password)
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verified = verify_user(username, password)
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if verified:
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# 写入session
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session['logged_in'] = True
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session[username] = username
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session['username'] = username
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session['expiry_date'] = get_expiry_date(username)
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session['visited_articles'] = None
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return jsonify({'status': '2'})
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else:
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return jsonify({'status': '1'})
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@accountService.route("/login", methods=['GET', 'POST'])
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def login():
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'''
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登录
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:return: 根据登录是否成功返回不同页面
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'''
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if request.method == 'GET':
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# GET请求
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return render_template('login.html')
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elif request.method == 'POST':
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# POST方法用于判断登录是否成功
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# check database and verify user
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username = escape(request.form['username'])
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password = escape(request.form['password'])
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verified = verify_user(username, password)
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if verified:
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# 登录成功，写入session
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session['logged_in'] = True
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session[username] = username
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session['username'] = username
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user_expiry_date = get_expiry_date(username)
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session['expiry_date'] = user_expiry_date
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session['visited_articles'] = None
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return jsonify({'status': '1'})
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else:
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return jsonify({'status': '0'})
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@accountService.route("/logout", methods=['GET', 'POST'])
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def logout():
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'''
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登出
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:return: 重定位到主界面
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'''
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# 将session标记为登出状态
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session['logged_in'] = False
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return redirect(url_for('mainpage'))
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@accountService.route("/reset", methods=['GET', 'POST'])
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def reset():
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'''
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重设密码
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:return: 返回适当的页面
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'''
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# 下列方法用于防止未登录状态下的修改密码
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if not session.get('logged_in'):
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return render_template('login.html')
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username = session['username']
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if username == '':
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return redirect('/login')
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if request.method == 'GET':
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# GET请求返回修改密码页面
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return render_template('reset.html', username=session['username'], state='wait')
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else:
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# POST请求用于提交修改后信息
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old_password = escape(request.form['old-password'])
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new_password = escape(request.form['new-password'])
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flag = change_password(username, old_password, new_password) # flag表示是否修改成功
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if flag:
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session['logged_in'] = False
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return jsonify({'status':'1'}) # 修改成功
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else:
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return jsonify({'status':'2'}) # 修改失败
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