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auth: don't trust clients too much - only trust the *last* IP in the X-Forwarded-For header
The X-Forwarded-For header contains a list of IP addresses, where each
proxy server appends the IP they see their request coming from.
See https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Forwarded-For .
Trusting the *first* IP in HTTP_X_FORWARDED_FOR would allow clients to claim
any IP, which could be used to bypass IP restrictions configured in Kallithea.
Instead, only trust the last proxy in the chain, and thus only use the *last*
IP in HTTP_X_FORWARDED_FOR. (In setups where more than last IP should be
trusted, the last proxy server in the chain must be configured rewrite the
header accordingly.)
The X-Forwarded-For header contains a list of IP addresses, where each
proxy server appends the IP they see their request coming from.
See https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Forwarded-For .
Trusting the *first* IP in HTTP_X_FORWARDED_FOR would allow clients to claim
any IP, which could be used to bypass IP restrictions configured in Kallithea.
Instead, only trust the last proxy in the chain, and thus only use the *last*
IP in HTTP_X_FORWARDED_FOR. (In setups where more than last IP should be
trusted, the last proxy server in the chain must be configured rewrite the
header accordingly.)
51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 abb83e4edfd9 51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 abb83e4edfd9 51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 51af7c12ffb1 | #!/usr/bin/env python3
"""
pyflakes with filter configuration for Kallithea.
Inspired by pyflakes/api.py and flake8/plugins/pyflakes.py .
"""
import sys
import pyflakes.api
import pyflakes.messages
class Reporter:
warned = False
def flake(self, warning):
# ignore known warnings
if isinstance(warning, pyflakes.messages.UnusedVariable):
return
if warning.filename == 'kallithea/bin/kallithea_cli_ishell.py':
if isinstance(warning, pyflakes.messages.ImportStarUsed) and warning.message_args == ('kallithea.model.db',):
return
if isinstance(warning, pyflakes.messages.UnusedImport) and warning.message_args == ('kallithea.model.db.*',):
return
print('%s:%s %s [%s %s]' % (warning.filename, warning.lineno, warning.message % warning.message_args, type(warning).__name__, warning.message_args))
self.warned = True
def unexpectedError(self, filename, msg):
print('Unexpected error for %s: %s' % (filename, msg))
reporter = Reporter()
for filename in sorted(set(sys.argv[1:])):
pyflakes.api.checkPath(filename, reporter=reporter)
if reporter.warned:
raise SystemExit(1)
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