mirror of
https://github.com/chubin/cheat.sh.git
synced 2026-06-20 21:26:44 +02:00
Luciano Strika
110 lines
3.1 KiB
Python
110 lines
3.1 KiB
Python
"""
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Connection limitatation.
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Number of connections from one IP is limited.
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We have nothing against scripting and automated queries,
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even in opposite, we encourage them, but there are some
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connection limits that even we can't handle.
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Currently the limits set low, but they will be relaxed
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in future.
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Usage:
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limits = Limits()
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not_allowed = limits.check_ip(ip_address)
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if not_allowed:
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return "ERROR: %s" % not_allowed
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"""
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import time
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from globals import log
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_WHITELIST = ['5.9.243.177']
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def _time_caps(m, h, d):
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return {
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'min': m,
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'hour': h,
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'day': d,
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}
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def _log_visit(interval, ip):
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if ip_address not in self.counter[interval]:
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self.counter[interval][ip_address] = 0
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self.counter[interval][ip_address] += 1
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def _limit_exceeded(interval, ip):
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visits = self.counter[interval][ip_address]
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limit = self.limit[interval]
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return visits > limit
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def _report_excessive_visits(interval, ip):
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log("%s LIMITED [%s for %s]" % (ip_address, self.limit[interval], interval))
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class Limits(object):
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"""
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Queries limitation (by IP).
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Exports:
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check_ip(ip_address)
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"""
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def __init__(self):
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self.intervals = ['min', 'hour', 'day']
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self.divisor = {
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'min': 60,
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'hour': 3600,
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'day': 86400,
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}
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self.counter = {
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'min': {},
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'hour': {},
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'day': {},
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}
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self.limit = {
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'min': 30,
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'hour': 600,
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'day': 1000,
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}
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self.last_update = {
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'min': 0,
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'hour': 0,
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'day': 0,
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}
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self._clear_counters_if_needed()
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def check_ip(self, ip_address):
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"""
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Check if `ip_address` is allowed, and if not raise an RuntimeError exception.
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Return True otherwise
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"""
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if ip_address in _WHITELIST:
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return None
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self._clear_counters_if_needed()
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for interval in self.intervals:
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if ip_address not in self.counter[interval]:
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self.counter[interval][ip_address] = 0
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self.counter[interval][ip_address] += 1
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if self.limit[interval] <= self.counter[interval][ip_address]:
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log("%s LIMITED [%s for %s]" % (ip_address, self.limit[interval], interval))
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return ("Not so fast! Number of queries per %s is limited to %s"
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% (interval, self.limit[interval]))
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return None
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def reset(self):
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"""
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Reset all counters for all IPs
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"""
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for interval in self.intervals:
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self.counter[interval] = {}
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def _clear_counters_if_needed(self):
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current_time = int(time.time())
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for interval in self.intervals:
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if current_time / self.divisor[interval] != self.last_update[interval]:
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self.counter[interval] = {}
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self.last_update[interval] = current_time / self.divisor[interval]
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