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Add restrictions by default to open registration in Synapse (#12091)

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Shay 2022-03-25 10:11:01 -07:00 • committed by GitHub
parent 7ca8ee67a5
commit 3c41d87b67
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7 changed files with 67 additions and 4 deletions
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17
synapse/app/homeserver.py
View file

@ -351,6 +351,23 @@ def setup(config_options: List[str]) -> SynapseHomeServer:
if config.server.gc_seconds:
synapse.metrics.MIN_TIME_BETWEEN_GCS = config.server.gc_seconds
if (
config.registration.enable_registration
and not config.registration.enable_registration_without_verification
):
if (
not config.captcha.enable_registration_captcha
and not config.registration.registrations_require_3pid
and not config.registration.registration_requires_token
):
raise ConfigError(
"You have enabled open registration without any verification. This is a known vector for "
"spam and abuse. If you would like to allow public registration, please consider adding email, "
"captcha, or token-based verification. Otherwise this check can be removed by setting the "
"`enable_registration_without_verification` config option to `true`."
)
hs = SynapseHomeServer(
config.server.server_name,
config=config,

14
synapse/config/registration.py
View file

@ -33,6 +33,10 @@ class RegistrationConfig(Config):
str(config["disable_registration"])
)
self.enable_registration_without_verification = strtobool(
str(config.get("enable_registration_without_verification", False))
)
self.registrations_require_3pid = config.get("registrations_require_3pid", [])
self.allowed_local_3pids = config.get("allowed_local_3pids", [])
self.enable_3pid_lookup = config.get("enable_3pid_lookup", True)
@ -207,10 +211,18 @@ class RegistrationConfig(Config):
# Registration can be rate-limited using the parameters in the "Ratelimiting"
# section of this file.
# Enable registration for new users.
# Enable registration for new users. Defaults to 'false'. It is highly recommended that if you enable registration,
# you use either captcha, email, or token-based verification to verify that new users are not bots. In order to enable registration
# without any verification, you must also set `enable_registration_without_verification`, found below.
#
#enable_registration: false
# Enable registration without email or captcha verification. Note: this option is *not* recommended,
# as registration without verification is a known vector for spam and abuse. Defaults to false. Has no effect
# unless `enable_registration` is also enabled.
#
#enable_registration_without_verification: true
# Time that a user's session remains valid for, after they log in.
#
# Note that this is not currently compatible with guest logins.