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from . import utils as util
from . import defaults as defs
def get_client_ip(
request,
proxy_order='left-most',
proxy_count=None,
proxy_trusted_ips=None,
request_header_order=None,
):
client_ip = None
routable = False
if proxy_count is None:
proxy_count = -1
if proxy_trusted_ips is None:
proxy_trusted_ips = []
if request_header_order is None:
request_header_order = defs.IPWARE_META_PRECEDENCE_ORDER
for key in request_header_order:
value = util.get_request_meta(request, key)
if value:
ips, ip_count = util.get_ips_from_string(value)
if ip_count < 1:
# we are expecting at least one IP address to process
continue
if proxy_count == 0 and ip_count > 1:
# we are not expecting requests via any proxies
continue
if proxy_count > 0 and proxy_count != ip_count - 1:
# we are expecting requests via `proxy_count` number of proxies
continue
if proxy_trusted_ips and ip_count < 2:
# we are expecting requests via at least one trusted proxy
continue
if proxy_order == 'right-most' and ip_count > 1:
# we are expecting requests via proxies to be custom as per `<proxy2>, <proxy1>, <client>`
ips.reverse()
if proxy_trusted_ips:
for proxy in proxy_trusted_ips:
# right most proxy is the most reliable proxy that talks to the django server
if ips[-1].startswith(proxy):
client_ip, routable = util.get_ip_info(ips[0])
if client_ip and routable:
return client_ip, routable
else:
client_ip, routable = util.get_ip_info(util.get_best_ip(client_ip, ips[0]))
if client_ip and routable:
return client_ip, routable
return client_ip, routable
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