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95 lines
2.5 KiB
95 lines
2.5 KiB
from django.core.cache import cache
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from django.conf import settings
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from django.core.mail import send_mail
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from celery import shared_task
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from common.sdk.sms.exceptions import CodeError, CodeExpired, CodeSendTooFrequently
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from common.sdk.sms.endpoint import SMS
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from common.exceptions import JMSException
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from common.utils.random import random_string
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from common.utils import get_logger
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logger = get_logger(__file__)
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@shared_task
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def send_async(sender):
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sender.gen_and_send()
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class SendAndVerifyCodeUtil(object):
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KEY_TMPL = 'auth-verify-code-{}'
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def __init__(self, target, code=None, key=None, backend='email', timeout=60, **kwargs):
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self.target = target
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self.code = code
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self.timeout = timeout
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self.backend = backend
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self.key = key or self.KEY_TMPL.format(target)
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self.other_args = kwargs
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def gen_and_send_async(self):
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return send_async.delay(self)
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def gen_and_send(self):
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ttl = self.__ttl()
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if ttl > 0:
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logger.error('Send sms too frequently, delay {}'.format(ttl))
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raise CodeSendTooFrequently(ttl)
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try:
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if not self.code:
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self.code = self.__generate()
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self.__send(self.code)
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except JMSException:
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self.__clear()
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raise
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def verify(self, code):
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right = cache.get(self.key)
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if not right:
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raise CodeExpired
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if right != code:
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raise CodeError
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self.__clear()
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return True
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def __clear(self):
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cache.delete(self.key)
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def __ttl(self):
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return cache.ttl(self.key)
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def __get_code(self):
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return cache.get(self.key)
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def __generate(self):
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code = random_string(4, lower=False, upper=False)
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self.code = code
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return code
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def __send_with_sms(self):
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sms = SMS()
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sms.send_verify_code(self.target, self.code)
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def __send_with_email(self):
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subject = self.other_args.get('subject')
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message = self.other_args.get('message')
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from_email = settings.EMAIL_FROM or settings.EMAIL_HOST_USER
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send_mail(subject, message, from_email, [self.target], html_message=message)
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def __send(self, code):
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"""
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发送信息的方法，如果有错误直接抛出 api 异常
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"""
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if self.backend == 'sms':
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self.__send_with_sms()
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else:
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self.__send_with_email()
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cache.set(self.key, self.code, self.timeout)
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logger.info(f'Send verify code to {self.target}: {code}')
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