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99 lines
2.4 KiB
99 lines
2.4 KiB
import random
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from django.core.cache import cache
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from django.utils.translation import gettext_lazy as _
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from common.sdk.sms import SMS
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from common.utils import get_logger
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from common.exceptions import JMSException
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logger = get_logger(__file__)
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class CodeExpired(JMSException):
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default_code = 'verify_code_expired'
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default_detail = _('The verification code has expired. Please resend it')
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class CodeError(JMSException):
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default_code = 'verify_code_error'
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default_detail = _('The verification code is incorrect')
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class CodeSendTooFrequently(JMSException):
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default_code = 'code_send_too_frequently'
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default_detail = _('Please wait {} seconds before sending')
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def __init__(self, ttl):
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super().__init__(detail=self.default_detail.format(ttl))
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class VerifyCodeUtil:
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KEY_TMPL = 'auth-verify_code-{}'
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TIMEOUT = 60
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def __init__(self, account, key_suffix=None, timeout=None):
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self.account = account
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self.key_suffix = key_suffix
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self.code = ''
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if key_suffix is not None:
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self.key = self.KEY_TMPL.format(key_suffix)
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else:
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self.key = self.KEY_TMPL.format(account)
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self.timeout = self.TIMEOUT if timeout is None else timeout
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def touch(self):
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"""
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生成，保存，发送
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"""
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ttl = self.ttl()
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if ttl > 0:
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raise CodeSendTooFrequently(ttl)
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try:
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self.generate()
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self.save()
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self.send()
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except JMSException:
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self.clear()
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raise
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def generate(self):
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code = ''.join(random.sample('0123456789', 4))
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self.code = code
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return code
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def clear(self):
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cache.delete(self.key)
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def save(self):
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cache.set(self.key, self.code, self.timeout)
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def send(self):
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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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account = self.account
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code = self.code
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sms = SMS()
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sms.send_verify_code(account, code)
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logger.info(f'Send sms verify code: account={account} code={code}')
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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 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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