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@ -5,6 +5,8 @@
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:synopsis: SMS client script (requires Twilio account)
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"""
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from time import time
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from math import floor
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from pyircbot.modulebase import ModuleBase, regex
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import cherrypy
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from threading import Thread
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@ -62,6 +64,39 @@ class SMS(ModuleBase):
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self.apithread = None
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self.twilio = Client(self.config["account_sid"], self.config["auth_token"])
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# limit-related vars
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# How many messages can be bursted
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self.bucket_max = int(self.config["limit"]["max"])
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# burst bucket, initial value is 1 or half the max, whichever is more
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self.bucket = max(1, self.bucket_max / 2)
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# how often the bucket has 1 item added
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self.bucket_period = int(self.config["limit"]["period"])
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# last time the burst bucket was filled
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self.bucket_lastfill = int(time())
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def check_rate_limit(self):
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"""
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Rate limiting via a 'burst bucket'. This method is called before sending and returns true or false depending on
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if the action is allowed.
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"""
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# First, update the bucket
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# Check if $period time has passed since the bucket was filled
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since_fill = int(time()) - self.bucket_lastfill
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if since_fill > self.bucket_period:
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# How many complete points are credited
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fills = floor(since_fill / self.bucket_period)
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self.bucket += fills
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if self.bucket > self.bucket_max:
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self.bucket = self.bucket_max
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# Advance the lastfill time appropriately
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self.bucket_lastfill += self.bucket_period * fills
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if self.bucket >= 1:
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self.bucket -= 1
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return True
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return False
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def api(self):
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"""
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Run the webhook listener and block
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@ -113,6 +148,11 @@ class SMS(ModuleBase):
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if contact not in self.config["contacts"].keys():
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return # TODO invalid contact
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if self.config["limit"]["enable"]:
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if not self.check_rate_limit():
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self.bot.act_PRIVMSG(msg.args[0], "Sorry, try again later")
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return
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try:
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self.twilio.api.account.messages.create(to=self.config["contacts"][contact],
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from_=self.config["number"],
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