bacommon.servermanager

  1# Released under the MIT License. See LICENSE for details.
  2#
  3"""Functionality related to the server manager script."""
  4from __future__ import annotations
  5
  6from enum import Enum
  7from dataclasses import field, dataclass
  8from typing import TYPE_CHECKING, Any
  9
 10from efro.dataclassio import ioprepped
 11
 12if TYPE_CHECKING:
 13    pass
 14
 15
 16@ioprepped
 17@dataclass
 18class ServerConfig:
 19    """Configuration for the server manager app (<appname>_server)."""
 20
 21    # Name of our server in the public parties list.
 22    party_name: str = 'FFA'
 23
 24    # If True, your party will show up in the global public party list
 25    # Otherwise it will still be joinable via LAN or connecting by IP
 26    # address.
 27    party_is_public: bool = True
 28
 29    # If True, all connecting clients will be authenticated through the
 30    # master server to screen for fake account info. Generally this
 31    # should always be enabled unless you are hosting on a LAN with no
 32    # internet connection.
 33    authenticate_clients: bool = True
 34
 35    # IDs of server admins. Server admins are not kickable through the
 36    # default kick vote system and they are able to kick players without
 37    # a vote. To get your account id, enter 'getaccountid' in
 38    # settings->advanced->enter-code.
 39    admins: list[str] = field(default_factory=list)
 40
 41    # Whether the default kick-voting system is enabled.
 42    enable_default_kick_voting: bool = True
 43
 44    # To be included in the public server list, your server MUST be
 45    # accessible via an ipv4 address. By default, the master server will
 46    # try to use the address your server contacts it from, but this may
 47    # be an ipv6 address these days so you may need to provide an ipv4
 48    # address explicitly.
 49    public_ipv4_address: str | None = None
 50
 51    # You can optionally provide an ipv6 address for your server for the
 52    # public server list. Unlike ipv4, a server is not required to have
 53    # an ipv6 address to appear in the list, but is still good to
 54    # provide when available since more and more devices are using ipv6
 55    # these days. Your server's ipv6 address will be autodetected if
 56    # your server uses ipv6 when communicating with the master server. You
 57    # can pass an empty string here to explicitly disable the ipv6
 58    # address.
 59    public_ipv6_address: str | None = None
 60
 61    # UDP port to host on. Change this to work around firewalls or run
 62    # multiple servers on one machine.
 63    #
 64    # 43210 is the default and the only port that will show up in the
 65    # LAN browser tab.
 66    port: int = 43210
 67
 68    # Max devices in the party. Note that this does *NOT* mean max
 69    # players. Any device in the party can have more than one player on
 70    # it if they have multiple controllers. Also, this number currently
 71    # includes the server so generally make it 1 bigger than you need.
 72    max_party_size: int = 6
 73
 74    # Max players that can join a session. If present this will override
 75    # the session's preferred max_players. if a value below 0 is given
 76    # player limit will be removed.
 77    session_max_players_override: int | None = None
 78
 79    # Options here are 'ffa' (free-for-all), 'teams' and 'coop'
 80    # (cooperative) This value is ignored if you supply a playlist_code
 81    # (see below).
 82    session_type: str = 'ffa'
 83
 84    # Playlist-code for teams or free-for-all mode sessions. To host
 85    # your own custom playlists, use the 'share' functionality in the
 86    # playlist editor in the regular version of the game. This will give
 87    # you a numeric code you can enter here to host that playlist.
 88    playlist_code: int | None = None
 89
 90    # Alternately, you can embed playlist data here instead of using
 91    # codes. Make sure to set session_type to the correct type for the
 92    # data here.
 93    playlist_inline: list[dict[str, Any]] | None = None
 94
 95    # Whether to shuffle the playlist or play its games in designated
 96    # order.
 97    playlist_shuffle: bool = True
 98
 99    # If True, keeps team sizes equal by disallowing joining the largest
100    # team (teams mode only).
101    auto_balance_teams: bool = True
102
103    # The campaign used when in co-op session mode. Do
104    # print(ba.app.campaigns) to see available campaign names.
105    coop_campaign: str = 'Easy'
106
107    # The level name within the campaign used in co-op session mode. For
108    # campaign name FOO, do print(ba.app.campaigns['FOO'].levels) to see
109    # available level names.
110    coop_level: str = 'Onslaught Training'
111
112    # Whether to enable telnet access.
113    #
114    # IMPORTANT: This option is no longer available, as it was being
115    # used for exploits. Live access to the running server is still
116    # possible through the mgr.cmd() function in the server script. Run
117    # your server through tools such as 'screen' or 'tmux' and you can
118    # reconnect to it remotely over a secure ssh connection.
119    enable_telnet: bool = False
120
121    # Series length in teams mode (7 == 'best-of-7' series; a team must
122    # get 4 wins)
123    teams_series_length: int = 7
124
125    # Points to win in free-for-all mode (Points are awarded per game
126    # based on performance)
127    ffa_series_length: int = 24
128
129    # If you have a custom stats webpage for your server, you can use
130    # this to provide a convenient in-game link to it in the
131    # server-browser alongside the server name.
132    #
133    # if ${ACCOUNT} is present in the string, it will be replaced by the
134    # currently-signed-in account's id. To fetch info about an account,
135    # your back-end server can use the following url:
136    # https://legacy.ballistica.net/accountquery?id=ACCOUNT_ID_HERE
137    stats_url: str | None = None
138
139    # If present, the server subprocess will attempt to gracefully exit
140    # after this amount of time. A graceful exit can occur at the end of
141    # a series or other opportune time. Server-managers set to
142    # auto-restart (the default) will then spin up a fresh subprocess.
143    # This mechanism can be useful to clear out any memory leaks or
144    # other accumulated bad state in the server subprocess.
145    clean_exit_minutes: float | None = None
146
147    # If present, the server subprocess will shut down immediately after
148    # this amount of time. This can be useful as a fallback for
149    # clean_exit_time. The server manager will then spin up a fresh
150    # server subprocess if auto-restart is enabled (the default).
151    unclean_exit_minutes: float | None = None
152
153    # If present, the server subprocess will shut down immediately if
154    # this amount of time passes with no activity from any players. The
155    # server manager will then spin up a fresh server subprocess if
156    # auto-restart is enabled (the default).
157    idle_exit_minutes: float | None = None
158
159    # Should the tutorial be shown at the beginning of games?
160    show_tutorial: bool = False
161
162    # Team names (teams mode only).
163    team_names: tuple[str, str] | None = None
164
165    # Team colors (teams mode only).
166    team_colors: (
167        tuple[tuple[float, float, float], tuple[float, float, float]] | None
168    ) = None
169
170    # Whether to enable the queue where players can line up before
171    # entering your server. Disabling this can be used as a workaround
172    # to deal with queue spamming attacks.
173    enable_queue: bool = True
174
175    # Protocol version we host with. Currently the default is 33 which
176    # still allows older 1.4 game clients to connect. Explicitly setting
177    # to 35 no longer allows those clients but adds/fixes a few things
178    # such as making camera shake properly work in net games.
179    protocol_version: int | None = None
180
181    # (internal) stress-testing mode.
182    stress_test_players: int | None = None
183
184    # How many seconds individual players from a given account must wait
185    # before rejoining the game. This can help suppress exploits
186    # involving leaving and rejoining or switching teams rapidly.
187    player_rejoin_cooldown: float = 10.0
188
189
190# NOTE: as much as possible, communication from the server-manager to
191# the child-process should go through these and not ad-hoc Python string
192# commands since this way is type safe.
193class ServerCommand:
194    """Base class for commands that can be sent to the server."""
195
196
197@dataclass
198class StartServerModeCommand(ServerCommand):
199    """Tells the app to switch into 'server' mode."""
200
201    config: ServerConfig
202
203
204class ShutdownReason(Enum):
205    """Reason a server is shutting down."""
206
207    NONE = 'none'
208    RESTARTING = 'restarting'
209
210
211@dataclass
212class ShutdownCommand(ServerCommand):
213    """Tells the server to shut down."""
214
215    reason: ShutdownReason
216    immediate: bool
217
218
219@dataclass
220class ChatMessageCommand(ServerCommand):
221    """Chat message from the server."""
222
223    message: str
224    clients: list[int] | None
225
226
227@dataclass
228class ScreenMessageCommand(ServerCommand):
229    """Screen-message from the server."""
230
231    message: str
232    color: tuple[float, float, float] | None
233    clients: list[int] | None
234
235
236@dataclass
237class ClientListCommand(ServerCommand):
238    """Print a list of clients."""
239
240
241@dataclass
242class KickCommand(ServerCommand):
243    """Kick a client."""
244
245    client_id: int
246    ban_time: int | None