The HTTP filtering system becomes even more complex! Though in this
case, it's pretty minimal, and definitely worth doing.
For instance, the following rule will allow connecting to localhost on
port :8080.
[[http.rules]]
host = "127.0.0.1"
port = 8080
action = "allow"
# Other rules as before.
Closes#540
Control characters become escaped as JSON requires
Non-ASCII characters get escaped as well for better interoperability
We assume here that lua strings represent only first 256 code points of unicode
When dealing with invalid paths (for instance, ones which are too long
or malformed), Java may throw a FileSystemException. This contains the
absolute path (i.e. C:/Users/Moi/.../.minecraft/...), which is printed
to the user within CC - obviously not ideal!
We simply catch this exception within the MountWrapper and map it back
to the local path. The disadvantage of doing it here is that we can't
map the path in the exception back to the computer - we'd need to catch
it in FileMount for that - so we just assume it referrs to the original
path instead.
Doing it in FileMount ends up being a little uglier, as we already do
all the exception wrangling in FileWrapper, so this'll do for now.
Fixes#495
This allows for configuring the size of computers and pocket computers,
as well as the max size of monitors.
There's several limitations with the current implementation, but it's
still "good enough" for an initial release:
- Turtles cannot be resized.
- GUIs do not scale themselves, so "large" sizes will not render within
the default resolution.
We never added back replacing of ${version} strings, which means that CC
was reporting incorrect version numbers in _HOST, the user agent and
network versions. This meant we would allow connections even on
mismatched versions (#464).
We shift all version handling into ComputerCraftAPI(Impl) - this now
relies on Forge code, so we don't want to run it in emulators.
This moves monitor networking into its own packet, rather than serialising
using NBT. This allows us to be more flexible with how monitors are
serialised.
We now compress terminal data using gzip. This reduces the packet size
of a max-sized-monitor from ~25kb to as little as 100b.
On my test set of images (what I would consider to be the extreme end of
the "reasonable" case), we have packets from 1.4kb bytes up to 12kb,
with a mean of 6kb. Even in the worst case, this is a 2x reduction in
packet size.
While this is a fantastic win for the common case, it is not abuse-proof.
One can create a terminal with high entropy (and so uncompressible). This
will still be close to the original packet size.
In order to prevent any other abuse, we also limit the amount of monitor
data a client can possibly receive to 1MB (configurable).
timetout, max_upload, max_download and max_websocket_message may now be
configured on a domain-by-domain basis. This uses the same system that
we use for the block/allow-list from before:
Example:
[[http.rules]]
host = "*"
action = "allow"
max_upload = 4194304
max_download = 16777216
timeout = 30000
When creating a peripheral or custom Lua object, one must implement two
methods:
- getMethodNames(): String[] - Returns the name of the methods
- callMethod(int, ...): Object[] - Invokes the method using an index in
the above array.
This has a couple of problems:
- It's somewhat unwieldy to use - you need to keep track of array
indices, which leads to ugly code.
- Functions which yield (for instance, those which run on the main
thread) are blocking. This means we need to spawn new threads for
each CC-side yield.
We replace this system with a few changes:
- @LuaFunction annotation: One may annotate a public instance method
with this annotation. This then exposes a peripheral/lua object
method.
Furthermore, this method can accept and return a variety of types,
which often makes functions cleaner (e.g. can return an int rather
than an Object[], and specify and int argument rather than
Object[]).
- MethodResult: Instead of returning an Object[] and having blocking
yields, functions return a MethodResult. This either contains an
immediate return, or an instruction to yield with some continuation
to resume with.
MethodResult is then interpreted by the Lua runtime (i.e. Cobalt),
rather than our weird bodgey hacks before. This means we no longer
spawn new threads when yielding within CC.
- Methods accept IArguments instead of a raw Object array. This has a
few benefits:
- Consistent argument handling - people no longer need to use
ArgumentHelper (as it doesn't exist!), or even be aware of its
existence - you're rather forced into using it.
- More efficient code in some cases. We provide a Cobalt-specific
implementation of IArguments, which avoids the boxing/unboxing when
handling numbers and binary strings.
- cc.pretty.pretty now accepts two additional options:
- function_args: Show function arguments
- function_source: Show where functions are defined.
- Expose the two options as lua.* settings (defaulting function_args to
true, and function_source to false).
These are then used in the Lua REPL.
Closes#361
- Use jacoco for Java-side coverage. Our Java coverage is /terrible
(~10%), as we only really test the core libraries. Still a good thing
to track for regressions though.
- mcfly now tracks Lua side coverage. This works in several stages:
- Replace loadfile to include the whole path
- Add a debug hook which just tracks filename->(lines->count). This
is then submitted to the Java test runner.
- On test completion, we emit a luacov.report.out file.
As the debug hook is inserted by mcfly, this does not include any
computer startup (such as loading apis, or the root of bios.lua),
despite they're executed.
This would be possible to do (for instance, inject a custom header
into bios.lua). However, we're not actually testing any of the
behaviour of startup (aside from "does it not crash"), so I'm not
sure whether to include it or not. Something I'll most likely
re-evaluate.
This functions the same as shell.run, but does not tokenise the
arguments. This allows us to pass command line arguments through to
another program without having to re-quote them.
Closes#417
- The store is now split into two sections:
- A list of possible options, with some metadata about them.
- A list of values which have been changed.
- settings.define can be used to register a new option. We have
migrated all existing options over to use it. This can be used to
define a default value, description, and a type the setting must have
(such as `string` or `boolean).
- settings.{set,unset,clear,load,store} operate using this value list.
This means that only values which have been changed are stored to
disk.
Furthermore, clearing/unsetting will reset to the /default/ value,
rather than removing entirely.
- The set program will now display descriptions.
- settings.{load,save} now default to `.settings` if no path is given.
This is relatively unoptimised right now, but should be efficient enough
for most practical applications.
- Add textutils.json_null. This will be serialized into a literal
`null`. When deserializing, and parse_null is true, this will be
returned instead of a nil.
- Add textutils.unserializeJSON (and textutils.unserializeJSON). This
is a standard compliant JSON parser (hopefully).
- Passing in nbt_style to textutils.unserializeJSON will handle
stringified NBT (no quotes around object keys, numeric suffices). We
don't currently support byte/long/int arrays - something to add in
a future commit.
- Remove stub for table.pack/table.unpack.
- Remove Lua 5.3 bitlib stub. We're not on 5.3, there's no
point emulating it.
- Change peripheral.call to correctly adjust the error level. This is a
terrible hack, but I believe the only good option.
It'd be good to remove load as well, but it's a little more complex due
to our injecting of _ENV.
Closes#363
- Return EPOCH if a zip entry's creation/modification/access time is
missing.
- If a BasicFileAttributes.*Time method returns null, use 0 as our
time. This shouldn't happen, but is a good sanity check.
Fixes#371
This adds documentation comments to many of CC's Lua APIs, and
a couple of the Java ones, through the use of stubs. We then
export these to HTML using illuaminate [1] and upload them to our
documentation site [2].
Uploads currently occur on pushes to master and any release/tag. The
site is entirely static - there is no way to switch between versions,
etc... but hopefully we can improve this in the future.
[1]: github.com/SquidDev/illuaminate/
[2]: https://tweaked.cc/
