160 lines
4.3 KiB
Python
160 lines
4.3 KiB
Python
import os
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import re
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import base64
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import functools
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from Crypto.PublicKey import RSA
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from Crypto.Cipher import PKCS1_v1_5 as PKCS1_cipher
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from flask import request
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from itsdangerous import Serializer
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from itsdangerous import TimedJSONWebSignatureSerializer as Serializer, SignatureExpired, BadSignature
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from user.user_db import FIND_DATA
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TOKEN_KEY = "P0eHym@&CbaLzWkq"
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def encrypt_data(**kwargs):
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"""
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用公钥加密
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Parameters:
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msg str 待加密信息
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Returns:
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加密后结果
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"""
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msg = kwargs['msg'] # 待加密信息
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with open(os.path.abspath(os.path.dirname(__file__)+'/static/rsa_public_key.pem')) as f:
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data = f.read()
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public_key = RSA.importKey(data)
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cipher = PKCS1_cipher.new(public_key)
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encrypt_text = base64.b64encode(cipher.encrypt(bytes(msg.encode("utf8"))))
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return encrypt_text.decode('utf-8')
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def decrypt_data(**kwargs):
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"""
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用私钥解密
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Parameters:
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encrypt_msg str 加密信息
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Returns:
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执行正确 解密后结果
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执行错误 False
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"""
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try:
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encrypt_msg = kwargs['encrypt_msg'] # 加密信息
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with open(os.path.abspath(os.path.dirname(__file__)+'/static/rsa_private_key.pem')) as f:
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data = f.read()
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private_key = RSA.importKey(data)
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cipher = PKCS1_cipher.new(private_key)
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back_text = cipher.decrypt(base64.b64decode(encrypt_msg), 0)
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return back_text.decode('utf-8')
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except Exception:
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return False
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def check_mail_fmt(email):
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"""
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邮箱地址格式校验，仅允许@fecr.com.cn
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Parameters:
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email: 邮箱
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Returns:
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result: 邮箱校验结果，正确返回True，不正确返回False
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"""
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# regex = "^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,3}|[0-9]{1,3})(\\]?)$"
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regex = "^.+\\@fecr.com.cn"
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case = (len(email) > 7) and (re.match(regex, email) is not None)
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result = True if case else False
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return result
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def check_pwd_fmt(pwd):
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"""
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密码强度校验
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Parameters:
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pwd: 密码（已加密）
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Returns:
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result: 密码强度校验结果，正确返回True，不正确返回False
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"""
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password = decrypt_data(encrypt_msg=pwd)
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if not password:
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return False
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regex = "^(?![A-Za-z0-9]+$)(?![a-z0-9\\W]+$)(?![A-Za-z\\W]+$)(?![A-Z0-9\\W]+$)^.{8,}$"
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case = (len(password) >= 8) and (re.match(regex, password) is not None)
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result = True if case else False
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return result
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def create_token(param):
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"""
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创建token
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Parameters:
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param: 传入参数，用于创建token
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Returns:
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token: 用户访问令牌
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"""
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token_expiration = 14400
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s = Serializer(TOKEN_KEY, expires_in=token_expiration)
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token = '' + s.dumps(param).decode('ascii')
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return token
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def verify_token(func):
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"""
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校验token
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Returns:
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返回token被解析后的值
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"""
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@functools.wraps(func)
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def internal(*args, **kwargs):
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try:
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s = Serializer(TOKEN_KEY)
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session_id = s.loads(request.headers.get('token'))
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records = FIND_DATA("用户", "token记录", {"session_id": session_id})
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if not records:
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return {"info": "提示: 账号已在别处登录"}, 401
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uid = records[0]['UID']
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except TypeError:
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return {"info": "验证参数错误"}, 401
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except KeyError:
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return {"info": "验证参数错误"}, 401
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except BadSignature:
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return {"info": "token错误"}, 401
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except SignatureExpired:
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return {"info": "token过期"}, 401
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return func(*args, **kwargs, uid=uid)
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return internal
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def authority_scope(scope):
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def decorate(func):
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@functools.wraps(func)
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def internal(*args, ** kwargs):
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records = FIND_DATA("用户", "用户信息", {"UID": kwargs['uid']})
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if not records:
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return {"info": "提示: 不存在该用户"}, 401
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if records[0]['status'] != "normal":
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return {"info": "提示: 该账户已被禁用"}, 401
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if records[0]['role'] not in scope:
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return {"info": "提示: 该账户没有权限"}, 401
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return func(*args, ** kwargs)
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return internal
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return decorate
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