summary refs log tree commit diff
path: root/synapse/config/ratelimiting.py
blob: d4090a1f9ad5eb4a6e62cc13d975f3ddcb5cba43 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
# Copyright 2014-2016 OpenMarket Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from typing import Any, Dict, Optional

import attr

from synapse.types import JsonDict

from ._base import Config


class RateLimitConfig:
    def __init__(
        self,
        config: Dict[str, float],
        defaults: Optional[Dict[str, float]] = None,
    ):
        defaults = defaults or {"per_second": 0.17, "burst_count": 3.0}

        self.per_second = config.get("per_second", defaults["per_second"])
        self.burst_count = int(config.get("burst_count", defaults["burst_count"]))


@attr.s(auto_attribs=True)
class FederationRateLimitConfig:
    window_size: int = 1000
    sleep_limit: int = 10
    sleep_delay: int = 500
    reject_limit: int = 50
    concurrent: int = 3


class RatelimitConfig(Config):
    section = "ratelimiting"

    def read_config(self, config: JsonDict, **kwargs: Any) -> None:

        # Load the new-style messages config if it exists. Otherwise fall back
        # to the old method.
        if "rc_message" in config:
            self.rc_message = RateLimitConfig(
                config["rc_message"], defaults={"per_second": 0.2, "burst_count": 10.0}
            )
        else:
            self.rc_message = RateLimitConfig(
                {
                    "per_second": config.get("rc_messages_per_second", 0.2),
                    "burst_count": config.get("rc_message_burst_count", 10.0),
                }
            )

        # Load the new-style federation config, if it exists. Otherwise, fall
        # back to the old method.
        if "rc_federation" in config:
            self.rc_federation = FederationRateLimitConfig(**config["rc_federation"])
        else:
            self.rc_federation = FederationRateLimitConfig(
                **{
                    k: v
                    for k, v in {
                        "window_size": config.get("federation_rc_window_size"),
                        "sleep_limit": config.get("federation_rc_sleep_limit"),
                        "sleep_delay": config.get("federation_rc_sleep_delay"),
                        "reject_limit": config.get("federation_rc_reject_limit"),
                        "concurrent": config.get("federation_rc_concurrent"),
                    }.items()
                    if v is not None
                }
            )

        self.rc_registration = RateLimitConfig(config.get("rc_registration", {}))

        self.rc_registration_token_validity = RateLimitConfig(
            config.get("rc_registration_token_validity", {}),
            defaults={"per_second": 0.1, "burst_count": 5},
        )

        rc_login_config = config.get("rc_login", {})
        self.rc_login_address = RateLimitConfig(rc_login_config.get("address", {}))
        self.rc_login_account = RateLimitConfig(rc_login_config.get("account", {}))
        self.rc_login_failed_attempts = RateLimitConfig(
            rc_login_config.get("failed_attempts", {})
        )

        self.federation_rr_transactions_per_room_per_second = config.get(
            "federation_rr_transactions_per_room_per_second", 50
        )

        rc_admin_redaction = config.get("rc_admin_redaction")
        self.rc_admin_redaction = None
        if rc_admin_redaction:
            self.rc_admin_redaction = RateLimitConfig(rc_admin_redaction)

        self.rc_joins_local = RateLimitConfig(
            config.get("rc_joins", {}).get("local", {}),
            defaults={"per_second": 0.1, "burst_count": 10},
        )
        self.rc_joins_remote = RateLimitConfig(
            config.get("rc_joins", {}).get("remote", {}),
            defaults={"per_second": 0.01, "burst_count": 10},
        )

        # Ratelimit cross-user key requests:
        # * For local requests this is keyed by the sending device.
        # * For requests received over federation this is keyed by the origin.
        #
        # Note that this isn't exposed in the configuration as it is obscure.
        self.rc_key_requests = RateLimitConfig(
            config.get("rc_key_requests", {}),
            defaults={"per_second": 20, "burst_count": 100},
        )

        self.rc_3pid_validation = RateLimitConfig(
            config.get("rc_3pid_validation") or {},
            defaults={"per_second": 0.003, "burst_count": 5},
        )

        self.rc_invites_per_room = RateLimitConfig(
            config.get("rc_invites", {}).get("per_room", {}),
            defaults={"per_second": 0.3, "burst_count": 10},
        )
        self.rc_invites_per_user = RateLimitConfig(
            config.get("rc_invites", {}).get("per_user", {}),
            defaults={"per_second": 0.003, "burst_count": 5},
        )

        self.rc_third_party_invite = RateLimitConfig(
            config.get("rc_third_party_invite", {}),
            defaults={
                "per_second": self.rc_message.per_second,
                "burst_count": self.rc_message.burst_count,
            },
        )