Bat Bot

wiki

In #lua, only the interpreter is exposed:

• !lua script - Runs the given script as Lua code in a sandbox. The sandbox's restrictions are defined below.

In other channels and in queries, batbot responds to the following commands:

• !ball8 - Returns a classic 8 ball reply.
• !date xxx - Returns the date, formatted similar to C's date command.
• !g[oogle] keywords - Returns the first result of a google search with the given keywords.
• !owner - Returns the owner nick (batrick).
• !ping - Pong!
• !quote nick keywords - Does a search through the last things 'nick' said from most recent to latest using the search terms 'keywords'.
• word(sp?) - Checks the spelling of 'word'. (The trigger is having '(sp?)' following a word)
• ur -- A variety of juvenile replies to equally juvenile remarks.

In order to keep channel spam down, you can play with the lua interpreter (or the bot in general) in either #batbot, #lua_bot, or in a private message (query).

batbot is written by batrick (on Freenode). Shirik and Cladhaire were instrumental in ensuring the security and correctness of its code.

Sandbox -- Notable differences from the regular Lua interpretter:

• Every script is run inside a coroutine. (yielding a script can be rerun at a later time, use coroutine.running() to get the running thread)
• The entire 'io' library has been removed.
• Most 'os' functions have been removed.
• Most of the debug functions have been modified so they can't break out of the sandbox, but their functionality should be equivalent for regular user code.
• The string and global metatable cannot be modified.
• The function newenv() allows you to set the state to the default.
• Simple statement's results are returned. (e.g. "!lua string.format("%s", "hi")" generates the reply "nick: hi")

The sandbox also includes a variety of custom functions whose names should be self explanatory. Enjoy!