Create README.md

README.md

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+# Extended Ban Mod for Minetest
+
+This mod attempts to be an improvement to Minetest's ban system.
+
+* It supports normal bans and temporary bans (from 60 seconds up to the end of
+  time, with 1 second granularity).
+* Records and joins all accounts using the same IP address and several IP
+  addresses using the same name into a single record, and can ban/unban them as
+  a single user.
+* Can ban offline players if you know their IP or username.
+* Holds a record of bans for each user, so moderators and administrators can
+  consult it to know if a player is a repeat offender.
+* Does not modify the default ban database in any way (`ipban.txt').
+* Has an API to ban and check the ban database to allows other mods to manage
+  users (for example, anticheat mods).
+
+## Chat commands
+
+The mod provides the following chat commands. All commands require the `ban`
+privilege.
+
+### `xban`
+
+Bans a player permanently.
+
+**Usage:** `/xban <player_or_ip> <reason>`
+
+**Example:** `/xban 127.0.0.1 Some reason.`
+
+### `xtempban`
+
+Bans a player temporarily.
+
+**Usage:** `/xtempban <player_or_ip> <time> <reason>`
+
+The `time` parameter is a string in the format `<count><unit>` where `<unit>`
+is one of `s` for seconds, `m` for minutes, `h` for hours, `D` for days, `W`
+for weeks, `M` for months, or `Y` for years. If the unit is omitted, it is
+assumed to mean seconds. For example, `42s` means 42 seconds, `1337m` 1337
+minutes, and so on. You can chain more than one such group and they will add
+up. For example, `1Y3M3D7h` will ban for 1 year, 3 months, 3 days and 7 hours.
+
+**Example:** `/xtempban Joe 3600 Some reason.`
+
+### `xunban`
+
+Unbans a player.
+
+**Usage:** `/xunban <player_or_ip>`
+
+**Example:** `/xunban Joe`
+
+### `xban_record`
+
+Shows the ban record on chat.
+
+**Usage:** `/xban_record <player_or_ip>`
+
+This prints one ban entry per line, with the time the ban came into effect,
+the expiration time (if applicable), the reason, and the source of the ban.
+The record is printed to chat with one entry per line.
+
+**Example:** `/xban_record Joe`
+
+### `xban_wl`
+
+Manages the whitelist.
+
+**Usage:** `/xban_wl (add|del|get) <player_or_ip>`
+
+Whitelisted players are allowed on the server even if it's otherwise marked
+as banned. This is useful to only allow certain users from shared computers,
+for example.
+
+The `add` subcommand adds the player to the whitelist. The `del` subcommand
+removes the player from the whitelist. The `get` subcommand checks if the
+player is in the whitelist, and prints the status to chat.
+
+**Example:** `/xban_record add Jane`
+
+### `xban_gui`
+
+Shows a form to consult the database interactively.
+
+**Usage:** `/xban_gui`
+
+## Administrator commands
+
+The following commands require the `server` privilege, so they are only
+available to server administrators.
+
+### `xban_dbi`
+
+Imports ban entries from other database formats.
+
+**Usage:** `/xban_dbi <importer>`
+
+The `importer` argument specifies from which database to import. These are
+the supported import plugins at the time of writing:
+
+* `minetest`: Import entries from Minetest's ban list (`ipban.txt`).
+* `v1`: Old format used by xban (`players.iplist`).
+* `v2`: Old format used by xban (`players.iplist.v2`).
+
+**Example:** `/xban_dbi minetest`