374 posts
Posted 21 February 2016 - 05:19 PM
I'm writing an SU API for my root method TKO for the operating system O, and I'm trying to overwrite all FS functions in batch. Is there a way i can do something like
for k,v in pairs(fs) do
vBackup = v
function v()
v = vBackup
--Whatever i want to do here---
return v()
end
end
3057 posts
Location
United States of America
Posted 21 February 2016 - 08:30 PM
for k, v in pairs(fs) do
local b = v
fs[k] = function( ... ) return b( ... ) end
end
374 posts
Posted 21 February 2016 - 11:49 PM
for k, v in pairs(fs) do
local b = v
fs[k] = function( ... ) return b( ... ) end
end
Thanks Yami!
374 posts
Posted 22 February 2016 - 01:07 AM
for k, v in pairs(fs) do
local b = v
fs[k] = function( ... ) return b( ... ) end
end
This worked, but i also need one more thing. I need to pass shell.getRunningProgram into an api, but i dont want the person to be able to put any program in, so i want no interaction other than checkSU(), and then in the code it checks with shell.getRunningProgram, but shell doesnt work in apis so i need some form of workaround.
7083 posts
Location
Tasmania (AU)
Posted 22 February 2016 - 03:01 AM
Why not load stick a copy of checkSU() into the sandboxed environment table, instead of into _G?
374 posts
Posted 22 February 2016 - 03:06 AM
Why not load stick a copy of checkSU() into the sandboxed environment table, instead of into _G?
I'm sorry, i dont understand this. What do you mean?
7083 posts
Location
Tasmania (AU)
Posted 22 February 2016 - 08:28 AM
The shell API isn't loaded into _G, but rather into the environment table of the shell which "loaded" it (that is to say, the shell script simply defines a global shell table and starts sticking functions into it).
This means regular APIs can't touch it (and with good reason - given that a system can run multiple instances of shell at once, which one should they try to interact with?).
So I'm suggesting you do the same: stick a pointer to your checkSU() function into the environment table for your sandbox. Since the shell table's also in there they'll be able to play with each other.
374 posts
Posted 22 February 2016 - 11:23 AM
So do something like ' local SU = {} ' and then throw functions in there? How would i go about doing so and allowing anything to execute those functions?
463 posts
Location
Star Wars
Posted 22 February 2016 - 06:26 PM
So do something like ' local SU = {} ' and then throw functions in there? How would i go about doing so and allowing anything to execute those functions?
I think, you have to deny all other functions with
setfenv(func, env), but it will be removed in CC 2.0. You will have to
use _ENV.
7083 posts
Location
Tasmania (AU)
Posted 23 February 2016 - 12:53 AM
So do something like ' local SU = {} ' and then throw functions in there? How would i go about doing so and allowing anything to execute those functions?
Have a think about how shell does it. That is to say, have your sandboxes autorun a certain script file when they start, and have that handle it.
374 posts
Posted 23 February 2016 - 01:34 AM
So do something like ' local SU = {} ' and then throw functions in there? How would i go about doing so and allowing anything to execute those functions?
Have a think about how shell does it. That is to say, have your sandboxes autorun a certain script file when they start, and have that handle it.
I dont know how shell does it, thats my issue. I havn't messed with too much heavy sandboxing or environments too much other than _G getfenv() hacking back in 1.73 and before.
7083 posts
Location
Tasmania (AU)
Posted 23 February 2016 - 01:37 AM
have your sandboxes autorun a certain script file when they start, and have that handle it.