spaces->tabs + cleanup + pathing fixes

sys/apis/fs/redfs.lua

@@ -1,61 +0,0 @@
---[[
-	Mount a readonly file system from another computer across rednet. The
-	target computer must be running OpusOS or redserver. Dissimlar to samba
-	in that a snapshot of the target is taken upon mounting - making this
-	faster.
-
-	Useful for mounting a non-changing directory tree.
-
-	Syntax:
-	rttp://<id>/directory/subdir
-
-	Examples:
-	rttp://12/usr/etc
-	rttp://8/usr
-]]--
-
-local rttp = require('rttp')
-
-local fs     = _G.fs
-
-local redfs = { }
-
-local function getListing(uri)
-	local success, response = rttp.get(uri .. '?recursive=true')
-
-	if not success then
-		error(response)
-	end
-
-	if response.statusCode ~= 200 then
-		error('Received response ' .. response.statusCode)
-	end
-
-	local list = { }
-	for _,v in pairs(response.data) do
-		if not v.isDir then
-			list[v.path] = {
-				url = uri .. '/' .. v.path,
-				size = v.size,
-			}
-		end
-	end
-
-	return list
-end
-
-function redfs.mount(dir, uri)
-	if not uri then
-		error('redfs syntax: uri')
-	end
-
-	local list = getListing(uri)
-	for path, entry in pairs(list) do
-		if not fs.exists(fs.combine(dir, path)) then
-			local node = fs.mount(fs.combine(dir, path), 'urlfs', entry.url)
-			node.size = entry.size
-		end
-	end
-end
-
-return redfs

sys/apis/fs/urlfs.lua

@@ -1,4 +1,4 @@
-local rttp = require('rttp')
+--local rttp = require('rttp')
 local Util = require('util')
 
 local fs = _G.fs
@@ -39,7 +39,6 @@ function urlfs.getDrive()
 end
 
 function urlfs.open(node, fn, fl)
-
 	if fl == 'w' or fl == 'wb' then
 		fs.delete(fn)
 		return fs.open(fn, fl)
@@ -51,12 +50,15 @@ function urlfs.open(node, fn, fl)
 
 	local c = node.cache
 	if not c then
+		--[[
 		if node.url:match("^(rttps?:)") then
 			local s, response = rttp.get(node.url)
 			c = s and response.statusCode == 200 and response.data
 		else
 			c = Util.httpGet(node.url)
 		end
+		]]--
+		c = Util.httpGet(node.url)
 		if c then
 			node.cache = c
 			node.size = #c

sys/apis/json.lua

@@ -1,215 +1,584 @@
--- credit ElvishJerricco
+-- Module options:
--- http://pastebin.com/raw.php?i=4nRg9CHU
+local register_global_module_table = false
+local global_module_name = 'json'
 
-local json = { }
+--[==[
+NOTE: Modified to reduce file size.
+See https://github.com/LuaDist/dkjson/blob/master/dkjson.lua
+for full version.
 
------------------------------------------------------------------- utils
+David Kolf's JSON module for Lua 5.1/5.2
-local controls = {["\n"]="\\n", ["\r"]="\\r", ["\t"]="\\t", ["\b"]="\\b", ["\f"]="\\f", ["\""]="\\\"", ["\\"]="\\\\"}
+Version 2.5
 
-local function isArray(t)
+For the documentation see the corresponding readme.txt or visit
-	local max = 0
+<http://dkolf.de/src/dkjson-lua.fsl/>.
-	for k,v in pairs(t) do
+
-		if type(k) ~= "number" then
+You can contact the author by sending an e-mail to 'david' at the
+domain 'dkolf.de'.
+
+Copyright (C) 2010-2014 David Heiko Kolf
+
+Refer to license located at https://github.com/LuaDist/dkjson/blob/master/dkjson.lua
+
+--]==]
+
+-- global dependencies:
+local pairs, type, tostring, tonumber, getmetatable, setmetatable, rawset =
+			pairs, type, tostring, tonumber, getmetatable, setmetatable, rawset
+local error, require, pcall, select = error, require, pcall, select
+local floor, huge = math.floor, math.huge
+local strrep, gsub, strsub, strbyte, strchar, strfind, strlen, strformat =
+			string.rep, string.gsub, string.sub, string.byte, string.char,
+			string.find, string.len, string.format
+local strmatch = string.match
+local concat = table.concat
+
+local json = { version = "dkjson 2.5" }
+
+if register_global_module_table then
+	_G[global_module_name] = json
+end
+
+local _ENV = nil -- blocking globals in Lua 5.2
+
+pcall (function()
+	-- Enable access to blocked metatables.
+	-- Don't worry, this module doesn't change anything in them.
+	local debmeta = require "debug".getmetatable
+	if debmeta then getmetatable = debmeta end
+end)
+
+json.null = setmetatable ({}, {
+	__tojson = function () return "null" end
+})
+
+local function isarray (tbl)
+	local max, n, arraylen = 0, 0, 0
+	for k,v in pairs (tbl) do
+		if k == 'n' and type(v) == 'number' then
+			arraylen = v
+			if v > max then
+				max = v
+			end
+		else
+			if type(k) ~= 'number' or k < 1 or floor(k) ~= k then
 				return false
-		elseif k > max then
+			end
+			if k > max then
 				max = k
 			end
+			n = n + 1
 		end
-	return max == #t
+	end
+	if max > 10 and max > arraylen and max > n * 2 then
+		return false -- don't create an array with too many holes
+	end
+	return true, max
 end
 
-local whites = {['\n']=true; ['\r']=true; ['\t']=true; [' ']=true; [',']=true; [':']=true}
+local escapecodes = {
-local function removeWhite(str)
+	["\""] = "\\\"", ["\\"] = "\\\\", ["\b"] = "\\b", ["\f"] = "\\f",
-	while whites[str:sub(1, 1)] do
+	["\n"] = "\\n",  ["\r"] = "\\r",  ["\t"] = "\\t"
-		str = str:sub(2)
+}
+
+local function escapeutf8 (uchar)
+	local value = escapecodes[uchar]
+	if value then
+		return value
 	end
+	local a, b, c, d = strbyte (uchar, 1, 4)
+	a, b, c, d = a or 0, b or 0, c or 0, d or 0
+	if a <= 0x7f then
+		value = a
+	elseif 0xc0 <= a and a <= 0xdf and b >= 0x80 then
+		value = (a - 0xc0) * 0x40 + b - 0x80
+	elseif 0xe0 <= a and a <= 0xef and b >= 0x80 and c >= 0x80 then
+		value = ((a - 0xe0) * 0x40 + b - 0x80) * 0x40 + c - 0x80
+	elseif 0xf0 <= a and a <= 0xf7 and b >= 0x80 and c >= 0x80 and d >= 0x80 then
+		value = (((a - 0xf0) * 0x40 + b - 0x80) * 0x40 + c - 0x80) * 0x40 + d - 0x80
+	else
+		return ""
+	end
+	if value <= 0xffff then
+		return strformat ("\\u%.4x", value)
+	elseif value <= 0x10ffff then
+		-- encode as UTF-16 surrogate pair
+		value = value - 0x10000
+		local highsur, lowsur = 0xD800 + floor (value/0x400), 0xDC00 + (value % 0x400)
+		return strformat ("\\u%.4x\\u%.4x", highsur, lowsur)
+	else
+		return ""
+	end
+end
+
+local function fsub (str, pattern, repl)
+	-- gsub always builds a new string in a buffer, even when no match
+	-- exists. First using find should be more efficient when most strings
+	-- don't contain the pattern.
+	if strfind (str, pattern) then
+		return gsub (str, pattern, repl)
+	else
 		return str
 	end
-
------------------------------------------------------------------- encoding
-
-local function encodeCommon(val, pretty, tabLevel, tTracking)
-	local str = ""
-
-	-- Tabbing util
-	local function tab(s)
-		str = str .. ("\t"):rep(tabLevel) .. s
 end
 
-	local function arrEncoding(val, bracket, closeBracket, iterator, loopFunc)
+local function quotestring (value)
-		str = str .. bracket
+	-- based on the regexp "escapable" in https://github.com/douglascrockford/JSON-js
-		if pretty then
+	value = fsub (value, "[%z\1-\31\"\\\127]", escapeutf8)
-			str = str .. "\n"
+	if strfind (value, "[\194\216\220\225\226\239]") then
-			tabLevel = tabLevel + 1
+		value = fsub (value, "\194[\128-\159\173]", escapeutf8)
+		value = fsub (value, "\216[\128-\132]", escapeutf8)
+		value = fsub (value, "\220\143", escapeutf8)
+		value = fsub (value, "\225\158[\180\181]", escapeutf8)
+		value = fsub (value, "\226\128[\140-\143\168-\175]", escapeutf8)
+		value = fsub (value, "\226\129[\160-\175]", escapeutf8)
+		value = fsub (value, "\239\187\191", escapeutf8)
+		value = fsub (value, "\239\191[\176-\191]", escapeutf8)
 	end
-		for k,v in iterator(val) do
+	return "\"" .. value .. "\""
-			tab("")
-			loopFunc(k,v)
-			str = str .. ","
-			if pretty then str = str .. "\n" end
-		end
-		if pretty then
-			tabLevel = tabLevel - 1
-		end
-		if str:sub(-2) == ",\n" then
-			str = str:sub(1, -3) .. "\n"
-		elseif str:sub(-1) == "," then
-			str = str:sub(1, -2)
-		end
-		tab(closeBracket)
 end
+json.quotestring = quotestring
 
-	-- Table encoding
+local function replace(str, o, n)
-	if type(val) == "table" then
+	local i, j = strfind (str, o, 1, true)
-		assert(not tTracking[val], "Cannot encode a table holding itself recursively")
+	if i then
-		tTracking[val] = true
+		return strsub(str, 1, i-1) .. n .. strsub(str, j+1, -1)
-		if isArray(val) then
-			arrEncoding(val, "[", "]", ipairs, function(k,v)
-				str = str .. encodeCommon(v, pretty, tabLevel, tTracking)
-			end)
 	else
-			arrEncoding(val, "{", "}", pairs, function(k,v)
-				assert(type(k) == "string", "JSON object keys must be strings", 2)
-				str = str .. encodeCommon(k, pretty, tabLevel, tTracking)
-				str = str .. (pretty and ": " or ":") .. encodeCommon(v, pretty, tabLevel, tTracking)
-			end)
-		end
-	-- String encoding
-	elseif type(val) == "string" then
-		str = '"' .. val:gsub("[%c\"\\]", controls) .. '"'
-	-- Number encoding
-	elseif type(val) == "number" or type(val) == "boolean" then
-		str = tostring(val)
-	else
-		error("JSON only supports arrays, objects, numbers, booleans, and strings", 2)
-	end
 		return str
 	end
-
-function json.encode(val)
-	return encodeCommon(val, false, 0, {})
 end
 
-function json.encodePretty(val)
+-- locale independent num2str and str2num functions
-	return encodeCommon(val, true, 0, {})
+local decpoint, numfilter
+
+local function updatedecpoint ()
+	decpoint = strmatch(tostring(0.5), "([^05+])")
+	-- build a filter that can be used to remove group separators
+	numfilter = "[^0-9%-%+eE" .. gsub(decpoint, "[%^%$%(%)%%%.%[%]%*%+%-%?]", "%%%0") .. "]+"
 end
 
-function json.encodeToFile(path, val)
+updatedecpoint()
-	local file = io.open(path, "w")
+
-	assert(file, "Unable to open file")
+local function num2str (num)
-	file:write(json.encodePretty(val))
+	return replace(fsub(tostring(num), numfilter, ""), decpoint, ".")
-	file:close()
 end
 
------------------------------------------------------------------- decoding
+local function str2num (str)
-
+	local num = tonumber(replace(str, ".", decpoint))
-local decodeControls = {}
+	if not num then
-for k,v in pairs(controls) do
+		updatedecpoint()
-	decodeControls[v] = k
+		num = tonumber(replace(str, ".", decpoint))
+	end
+	return num
 end
 
-local function parseBoolean(str)
+local function addnewline2 (level, buffer, buflen)
-	if str:sub(1, 4) == "true" then
+	buffer[buflen+1] = "\n"
-		return true, removeWhite(str:sub(5))
+	buffer[buflen+2] = strrep ("  ", level)
+	buflen = buflen + 2
+	return buflen
+end
+
+function json.addnewline (state)
+	if state.indent then
+		state.bufferlen = addnewline2 (state.level or 0,
+													 state.buffer, state.bufferlen or #(state.buffer))
+	end
+end
+
+local encode2 -- forward declaration
+
+local function addpair (key, value, prev, indent, level, buffer, buflen, tables, globalorder, state)
+	local kt = type (key)
+	if kt ~= 'string' and kt ~= 'number' then
+		return nil, "type '" .. kt .. "' is not supported as a key by JSON."
+	end
+	if prev then
+		buflen = buflen + 1
+		buffer[buflen] = ","
+	end
+	if indent then
+		buflen = addnewline2 (level, buffer, buflen)
+	end
+	buffer[buflen+1] = quotestring (key)
+	buffer[buflen+2] = ":"
+	return encode2 (value, indent, level, buffer, buflen + 2, tables, globalorder, state)
+end
+
+local function appendcustom(res, buffer, state)
+	local buflen = state.bufferlen
+	if type (res) == 'string' then
+		buflen = buflen + 1
+		buffer[buflen] = res
+	end
+	return buflen
+end
+
+local function exception(reason, value, state, buffer, buflen, defaultmessage)
+	defaultmessage = defaultmessage or reason
+	local handler = state.exception
+	if not handler then
+		return nil, defaultmessage
 	else
-		return false, removeWhite(str:sub(6))
+		state.bufferlen = buflen
+		local ret, msg = handler (reason, value, state, defaultmessage)
+		if not ret then return nil, msg or defaultmessage end
+		return appendcustom(ret, buffer, state)
 	end
 end
 
-local function parseNull(str)
+function json.encodeexception(reason, value, state, defaultmessage)
-	return nil, removeWhite(str:sub(5))
+	return quotestring("<" .. defaultmessage .. ">")
 end
 
-local numChars = {['e']=true; ['E']=true; ['+']=true; ['-']=true; ['.']=true}
+encode2 = function (value, indent, level, buffer, buflen, tables, globalorder, state)
-local function parseNumber(str)
+	local valtype = type (value)
-	local i = 1
+	local valmeta = getmetatable (value)
-	while numChars[str:sub(i, i)] or tonumber(str:sub(i, i)) do
+	valmeta = type (valmeta) == 'table' and valmeta -- only tables
-		i = i + 1
+	local valtojson = valmeta and valmeta.__tojson
+	if valtojson then
+		if tables[value] then
+			return exception('reference cycle', value, state, buffer, buflen)
 		end
-	local val = tonumber(str:sub(1, i - 1))
+		tables[value] = true
-	str = removeWhite(str:sub(i))
+		state.bufferlen = buflen
-	return val, str
+		local ret, msg = valtojson (value, state)
+		if not ret then return exception('custom encoder failed', value, state, buffer, buflen, msg) end
+		tables[value] = nil
+		buflen = appendcustom(ret, buffer, state)
+	elseif value == nil then
+		buflen = buflen + 1
+		buffer[buflen] = "null"
+	elseif valtype == 'number' then
+		local s
+		if value ~= value or value >= huge or -value >= huge then
+			-- This is the behaviour of the original JSON implementation.
+			s = "null"
+		else
+			s = num2str (value)
+		end
+		buflen = buflen + 1
+		buffer[buflen] = s
+	elseif valtype == 'boolean' then
+		buflen = buflen + 1
+		buffer[buflen] = value and "true" or "false"
+	elseif valtype == 'string' then
+		buflen = buflen + 1
+		buffer[buflen] = quotestring (value)
+	elseif valtype == 'table' then
+		if tables[value] then
+			return exception('reference cycle', value, state, buffer, buflen)
+		end
+		tables[value] = true
+		level = level + 1
+		local isa, n = isarray (value)
+		if n == 0 and valmeta and valmeta.__jsontype == 'object' then
+			isa = false
+		end
+		local msg
+		if isa then -- JSON array
+			buflen = buflen + 1
+			buffer[buflen] = "["
+			for i = 1, n do
+				buflen, msg = encode2 (value[i], indent, level, buffer, buflen, tables, globalorder, state)
+				if not buflen then return nil, msg end
+				if i < n then
+					buflen = buflen + 1
+					buffer[buflen] = ","
+				end
+			end
+			buflen = buflen + 1
+			buffer[buflen] = "]"
+		else -- JSON object
+			local prev = false
+			buflen = buflen + 1
+			buffer[buflen] = "{"
+			local order = valmeta and valmeta.__jsonorder or globalorder
+			if order then
+				local used = {}
+				n = #order
+				for i = 1, n do
+					local k = order[i]
+					local v = value[k]
+					if v then
+						used[k] = true
+						buflen, msg = addpair (k, v, prev, indent, level, buffer, buflen, tables, globalorder, state)
+						prev = true -- add a seperator before the next element
+					end
+				end
+				for k,v in pairs (value) do
+					if not used[k] then
+						buflen, msg = addpair (k, v, prev, indent, level, buffer, buflen, tables, globalorder, state)
+						if not buflen then return nil, msg end
+						prev = true -- add a seperator before the next element
+					end
+				end
+			else -- unordered
+				for k,v in pairs (value) do
+					buflen, msg = addpair (k, v, prev, indent, level, buffer, buflen, tables, globalorder, state)
+					if not buflen then return nil, msg end
+					prev = true -- add a seperator before the next element
+				end
+			end
+			if indent then
+				buflen = addnewline2 (level - 1, buffer, buflen)
+			end
+			buflen = buflen + 1
+			buffer[buflen] = "}"
+		end
+		tables[value] = nil
+	else
+		return exception ('unsupported type', value, state, buffer, buflen,
+			"type '" .. valtype .. "' is not supported by JSON.")
+	end
+	return buflen
 end
 
-local function parseString(str)
+function json.encode (value, state)
-	str = str:sub(2)
+	state = state or {}
-	local s = ""
+	local oldbuffer = state.buffer
-	while str:sub(1,1) ~= "\"" do
+	local buffer = oldbuffer or {}
-		local next = str:sub(1,1)
+	state.buffer = buffer
-		str = str:sub(2)
+	updatedecpoint()
-		assert(next ~= "\n", "Unclosed string")
+	local ret, msg = encode2 (value, state.indent, state.level or 0,
-
+									 buffer, state.bufferlen or 0, state.tables or {}, state.keyorder, state)
-		if next == "\\" then
+	if not ret then
-			local escape = str:sub(1,1)
+		error (msg, 2)
-			str = str:sub(2)
+	elseif oldbuffer == buffer then
-
+		state.bufferlen = ret
-			next = assert(decodeControls[next..escape], "Invalid escape character")
+		return true
-		end
+	else
-
+		state.bufferlen = nil
-		s = s .. next
+		state.buffer = nil
-	end
+		return concat (buffer)
-	return s, removeWhite(str:sub(2))
-end
-
-function json.parseArray(str)
-	str = removeWhite(str:sub(2))
-
-	local val = {}
-	local i = 1
-	while str:sub(1, 1) ~= "]" do
-		local v
-		v, str = json.parseValue(str)
-		val[i] = v
-		i = i + 1
-		str = removeWhite(str)
-	end
-	str = removeWhite(str:sub(2))
-	return val, str
-end
-
-function json.parseValue(str)
-	local fchar = str:sub(1, 1)
-	if fchar == "{" then
-		return json.parseObject(str)
-	elseif fchar == "[" then
-		return json.parseArray(str)
-	elseif tonumber(fchar) ~= nil or numChars[fchar] then
-		return parseNumber(str)
-	elseif str:sub(1, 4) == "true" or str:sub(1, 5) == "false" then
-		return parseBoolean(str)
-	elseif fchar == "\"" then
-		return parseString(str)
-	elseif str:sub(1, 4) == "null" then
-		return parseNull(str)
 	end
 end
 
-function json.parseMember(str)
+local function loc (str, where)
-	local k, val
+	local line, pos, linepos = 1, 1, 0
-	k, str = json.parseValue(str)
+	while true do
-	val, str = json.parseValue(str)
+		pos = strfind (str, "\n", pos, true)
-	return k, val, str
+		if pos and pos < where then
+			line = line + 1
+			linepos = pos
+			pos = pos + 1
+		else
+			break
+		end
+	end
+	return "line " .. line .. ", column " .. (where - linepos)
 end
 
-function json.parseObject(str)
+local function unterminated (str, what, where)
-	str = removeWhite(str:sub(2))
+	return nil, strlen (str) + 1, "unterminated " .. what .. " at " .. loc (str, where)
-
-	local val = {}
-	while str:sub(1, 1) ~= "}" do
-		local k, v
-		k, v, str = json.parseMember(str)
-		val[k] = v
-		str = removeWhite(str)
-	end
-	str = removeWhite(str:sub(2))
-	return val, str
 end
 
-function json.decode(str)
+local function scanwhite (str, pos)
-	str = removeWhite(str)
+	while true do
-	return json.parseValue(str)
+		pos = strfind (str, "%S", pos)
+		if not pos then return nil end
+		local sub2 = strsub (str, pos, pos + 1)
+		if sub2 == "\239\187" and strsub (str, pos + 2, pos + 2) == "\191" then
+			-- UTF-8 Byte Order Mark
+			pos = pos + 3
+		elseif sub2 == "//" then
+			pos = strfind (str, "[\n\r]", pos + 2)
+			if not pos then return nil end
+		elseif sub2 == "/*" then
+			pos = strfind (str, "*/", pos + 2)
+			if not pos then return nil end
+			pos = pos + 2
+		else
+			return pos
+		end
+	end
 end
 
+local escapechars = {
+	["\""] = "\"", ["\\"] = "\\", ["/"] = "/", ["b"] = "\b", ["f"] = "\f",
+	["n"] = "\n", ["r"] = "\r", ["t"] = "\t"
+}
+
+local function unichar (value)
+	if value < 0 then
+		return nil
+	elseif value <= 0x007f then
+		return strchar (value)
+	elseif value <= 0x07ff then
+		return strchar (0xc0 + floor(value/0x40),
+										0x80 + (floor(value) % 0x40))
+	elseif value <= 0xffff then
+		return strchar (0xe0 + floor(value/0x1000),
+										0x80 + (floor(value/0x40) % 0x40),
+										0x80 + (floor(value) % 0x40))
+	elseif value <= 0x10ffff then
+		return strchar (0xf0 + floor(value/0x40000),
+										0x80 + (floor(value/0x1000) % 0x40),
+										0x80 + (floor(value/0x40) % 0x40),
+										0x80 + (floor(value) % 0x40))
+	else
+		return nil
+	end
+end
+
+local function scanstring (str, pos)
+	local lastpos = pos + 1
+	local buffer, n = {}, 0
+	while true do
+		local nextpos = strfind (str, "[\"\\]", lastpos)
+		if not nextpos then
+			return unterminated (str, "string", pos)
+		end
+		if nextpos > lastpos then
+			n = n + 1
+			buffer[n] = strsub (str, lastpos, nextpos - 1)
+		end
+		if strsub (str, nextpos, nextpos) == "\"" then
+			lastpos = nextpos + 1
+			break
+		else
+			local escchar = strsub (str, nextpos + 1, nextpos + 1)
+			local value
+			if escchar == "u" then
+				value = tonumber (strsub (str, nextpos + 2, nextpos + 5), 16)
+				if value then
+					local value2
+					if 0xD800 <= value and value <= 0xDBff then
+						-- we have the high surrogate of UTF-16. Check if there is a
+						-- low surrogate escaped nearby to combine them.
+						if strsub (str, nextpos + 6, nextpos + 7) == "\\u" then
+							value2 = tonumber (strsub (str, nextpos + 8, nextpos + 11), 16)
+							if value2 and 0xDC00 <= value2 and value2 <= 0xDFFF then
+								value = (value - 0xD800)  * 0x400 + (value2 - 0xDC00) + 0x10000
+							else
+								value2 = nil -- in case it was out of range for a low surrogate
+							end
+						end
+					end
+					value = value and unichar (value)
+					if value then
+						if value2 then
+							lastpos = nextpos + 12
+						else
+							lastpos = nextpos + 6
+						end
+					end
+				end
+			end
+			if not value then
+				value = escapechars[escchar] or escchar
+				lastpos = nextpos + 2
+			end
+			n = n + 1
+			buffer[n] = value
+		end
+	end
+	if n == 1 then
+		return buffer[1], lastpos
+	elseif n > 1 then
+		return concat (buffer), lastpos
+	else
+		return "", lastpos
+	end
+end
+
+local scanvalue -- forward declaration
+
+local function scantable (what, closechar, str, startpos, nullval, objectmeta, arraymeta)
+	local len = strlen (str)
+	local tbl, n = {}, 0
+	local pos = startpos + 1
+	if what == 'object' then
+		setmetatable (tbl, objectmeta)
+	else
+		setmetatable (tbl, arraymeta)
+	end
+	while true do
+		pos = scanwhite (str, pos)
+		if not pos then return unterminated (str, what, startpos) end
+		local char = strsub (str, pos, pos)
+		if char == closechar then
+			return tbl, pos + 1
+		end
+		local val1, err
+		val1, pos, err = scanvalue (str, pos, nullval, objectmeta, arraymeta)
+		if err then return nil, pos, err end
+		pos = scanwhite (str, pos)
+		if not pos then return unterminated (str, what, startpos) end
+		char = strsub (str, pos, pos)
+		if char == ":" then
+			if val1 == nil then
+				return nil, pos, "cannot use nil as table index (at " .. loc (str, pos) .. ")"
+			end
+			pos = scanwhite (str, pos + 1)
+			if not pos then return unterminated (str, what, startpos) end
+			local val2
+			val2, pos, err = scanvalue (str, pos, nullval, objectmeta, arraymeta)
+			if err then return nil, pos, err end
+			tbl[val1] = val2
+			pos = scanwhite (str, pos)
+			if not pos then return unterminated (str, what, startpos) end
+			char = strsub (str, pos, pos)
+		else
+			n = n + 1
+			tbl[n] = val1
+		end
+		if char == "," then
+			pos = pos + 1
+		end
+	end
+end
+
+scanvalue = function (str, pos, nullval, objectmeta, arraymeta)
+	pos = pos or 1
+	pos = scanwhite (str, pos)
+	if not pos then
+		return nil, strlen (str) + 1, "no valid JSON value (reached the end)"
+	end
+	local char = strsub (str, pos, pos)
+	if char == "{" then
+		return scantable ('object', "}", str, pos, nullval, objectmeta, arraymeta)
+	elseif char == "[" then
+		return scantable ('array', "]", str, pos, nullval, objectmeta, arraymeta)
+	elseif char == "\"" then
+		return scanstring (str, pos)
+	else
+		local pstart, pend = strfind (str, "^%-?[%d%.]+[eE]?[%+%-]?%d*", pos)
+		if pstart then
+			local number = str2num (strsub (str, pstart, pend))
+			if number then
+				return number, pend + 1
+			end
+		end
+		pstart, pend = strfind (str, "^%a%w*", pos)
+		if pstart then
+			local name = strsub (str, pstart, pend)
+			if name == "true" then
+				return true, pend + 1
+			elseif name == "false" then
+				return false, pend + 1
+			elseif name == "null" then
+				return nullval, pend + 1
+			end
+		end
+		return nil, pos, "no valid JSON value at " .. loc (str, pos)
+	end
+end
+
+local function optionalmetatables(...)
+	if select("#", ...) > 0 then
+		return ...
+	else
+		return {__jsontype = 'object'}, {__jsontype = 'array'}
+	end
+end
+
+function json.decode (str, pos, nullval, ...)
+	local objectmeta, arraymeta = optionalmetatables(...)
+	return scanvalue (str, pos, nullval, objectmeta, arraymeta)
+end
+
+-- NOTE: added method - not in original source
 function json.decodeFromFile(path)
 	local file = assert(fs.open(path, "r"))
 	local decoded = json.decode(file.readAll())

sys/apis/map.lua

@@ -19,9 +19,9 @@ function Map.removeMatches(t, values)
 		return true
 	end
 
-	for k,v in pairs(t) do
+	for _, key in pairs(Util.keys(t)) do
-		if matchAll(v) then
+		if matchAll(t[key]) then
-			t[k] = nil
+			t[key] = nil
 		end
 	end
 end

sys/apis/pathfind.lua

@@ -106,6 +106,17 @@ local function selectDestination(pts, box, grid)
 	end
 end
 
+local function updateCanvas(path)
+	local t = { }
+	for node in path:nodes() do
+		table.insert(t, { x = node.x, y = node.y, z = node.z })
+	end
+	os.queueEvent('canvas', {
+		type = 'canvas_path',
+		data = t,
+	})
+end
+
 local function pathTo(dest, options)
 	local blocks = options.blocks or turtle.getState().blocks or { }
 	local dests  = options.dest   or { dest }  -- support alternative destinations
@@ -156,6 +167,8 @@ local function pathTo(dest, options)
 		if not path then
 			Util.removeByValue(dests, dest)
 		else
+			updateCanvas(path)
+
 			path:filter()
 
 			for node in path:nodes() do
@@ -173,11 +186,19 @@ local function pathTo(dest, options)
 
 				-- use single turn method so the turtle doesn't turn around
 				-- when encountering obstacles
-				if not turtle.gotoSingleTurn(pt.x, pt.y, pt.z, pt.heading) then
+				--if not turtle.gotoSingleTurn(pt.x, pt.y, pt.z, pt.heading) then
-				--if not turtle.goto(pt) then
+				pt.heading = nil
+				if not turtle.go(pt) then
 					local bpt = Point.nearestTo(turtle.point, pt)
 
+					if turtle.getFuelLevel() == 0 then
+						return false, 'Out of fuel'
+					end
 					table.insert(blocks, bpt)
+					os.queueEvent('canvas', {
+						type = 'canvas_barrier',
+						data = { bpt },
+					})
 					-- really need to check if the block we ran into was a turtle.
 					-- if so, this block should be temporary (1-2 secs)
 

sys/apis/point.lua

@@ -131,8 +131,11 @@ end
 function Point.calculateMoves(pta, ptb, distance)
 	local heading = pta.heading
 	local moves = distance or Point.turtleDistance(pta, ptb)
+	local weighted = moves
+
 	if (pta.heading % 2) == 0 and pta.z ~= ptb.z then
 		moves = moves + 1
+		weighted = weighted + .9
 		if ptb.heading and (ptb.heading % 2 == 1) then
 			heading = ptb.heading
 		elseif ptb.z > pta.z then
@@ -142,6 +145,7 @@ function Point.calculateMoves(pta, ptb, distance)
 		end
 	elseif (pta.heading % 2) == 1 and pta.x ~= ptb.x then
 		moves = moves + 1
+		weighted = weighted + .9
 		if ptb.heading and (ptb.heading % 2 == 0) then
 			heading = ptb.heading
 		elseif ptb.x > pta.x then
@@ -152,15 +156,18 @@ function Point.calculateMoves(pta, ptb, distance)
 	end
 
 	if not ptb.heading then
-		return moves, heading, moves
+		return moves, heading, weighted
 	end
 
+	-- need to know if we are in digging mode
+	-- if so, we need to face blocks -- need a no-backwards flag
+
 	-- calc turns as slightly less than moves
-	local weighted = moves
+	-- local weighted = moves
 	if heading ~= ptb.heading then
 		local turns = Point.calculateTurns(heading, ptb.heading)
 		moves = moves + turns
-		local wturns = { [0] = 0, [1] = .9, [2] = 1.9 }
+		local wturns = { [0] = 0, [1] = .9, [2] = 1.8 }
 		weighted = weighted + wturns[turns]
 		heading = ptb.heading
 	end

sys/apis/proxy.lua

@@ -1,32 +0,0 @@
-local Socket  = require('socket')
-
-local Proxy = { }
-
-function Proxy.create(remoteId, uri)
-  local socket, msg = Socket.connect(remoteId, 188)
-
-  if not socket then
-		error(msg)
-	end
-
-  socket.co = coroutine.running()
-
-	socket:write(uri)
-	local methods = socket:read(2) or error('Timed out')
-
-	local hijack = { }
-	for _,method in pairs(methods) do
-		hijack[method] = function(...)
-			socket:write({ method, ... })
-			local resp = socket:read()
-			if not resp then
-				error('timed out: ' .. method)
-			end
-			return table.unpack(resp)
-		end
-	end
-
-	return hijack, socket
-end
-
-return Proxy

sys/apis/rttp.lua

@@ -1,95 +0,0 @@
-local device = _G.device
-local os     = _G.os
-
-local rttp = { }
-local computerId = os.getComputerID()
-
-local function parse(url, default)
-	-- initialize default parameters
-	local parsed = {}
-	local authority
-
-	for i,v in pairs(default or parsed) do parsed[i] = v end
-	-- remove whitespace
-	-- url = string.gsub(url, "%s", "")
-	-- Decode unreserved characters
-	url = string.gsub(url, "%%(%x%x)", function(hex)
-			local char = string.char(tonumber(hex, 16))
-			if string.match(char, "[a-zA-Z0-9._~-]") then
-				return char
-			end
-			-- Hex encodings that are not unreserved must be preserved.
-			return nil
-		end)
-	-- get fragment
-	url = string.gsub(url, "#(.*)$", function(f)
-		parsed.fragment = f
-		return ""
-	end)
-	-- get scheme. Lower-case according to RFC 3986 section 3.1.
-	url = string.gsub(url, "^(%w[%w.+-]*):",
-	function(s) parsed.scheme = string.lower(s); return "" end)
-	-- get authority
-	url = string.gsub(url, "^//([^/]*)", function(n)
-		authority = n
-		return ""
-	end)
-	-- get query stringing
-	url = string.gsub(url, "%?(.*)", function(q)
-		parsed.query = q
-		return ""
-	end)
-	-- get params
-	url = string.gsub(url, "%;(.*)", function(p)
-		parsed.params = p
-		return ""
-	end)
-
-	-- path is whatever was left
-	parsed.path = url
-
-	-- Represents host:port, port = nil if not used.
-	if authority then
-		authority = string.gsub(authority, ":(%d+)$",
-								function(p) parsed.port = tonumber(p); return "" end)
-		if authority ~= "" then
-			parsed.host = authority
-		end
-	end
-	return parsed
-end
-
-function rttp.get(url)
-	local modem  = device.wireless_modem or error('Modem not found')
-	local parsed = parse(url, { port = 80 })
-
-	parsed.host = tonumber(parsed.host) or error('Invalid url')
-
-	for i = 16384, 32767 do
-		if not modem.isOpen(i) then
-			modem.open(i)
-			local path = parsed.query and parsed.path .. '?' .. parsed.query or parsed.path
-
-			modem.transmit(parsed.port, parsed.host, {
-				method = 'GET',
-				replyAddress = computerId,
-				replyPort = i,
-				path = path,
-			})
-			local timerId = os.startTimer(3)
-			repeat
-				local event, id, dport, dhost, response = os.pullEvent()
-				if event == 'modem_message' and
-					dport == i and
-					dhost == computerId and
-					type(response) == 'table' then
-					modem.close(i)
-					return true, response
-				end
-			until event == 'timer' and id == timerId
-			return false, 'timeout'
-		end
-	end
-end
-
-return rttp

sys/apis/sha2.lua

@@ -0,0 +1,200 @@
+-- SHA-256, HMAC and PBKDF2 functions in ComputerCraft
+-- By Anavrins
+
+local bit = _G.bit
+
+local mod32 = 2^32
+local band    = bit32 and bit32.band or bit.band
+local bnot    = bit32 and bit32.bnot or bit.bnot
+local bxor    = bit32 and bit32.bxor or bit.bxor
+local blshift = bit32 and bit32.lshift or bit.blshift
+local upack   = unpack
+
+local function rrotate(n, b)
+	local s = n/(2^b)
+	local f = s%1
+	return (s-f) + f*mod32
+end
+local function brshift(int, by)
+	local s = int / (2^by)
+	return s - s%1
+end
+
+local H = {
+	0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a,
+	0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19,
+}
+
+local K = {
+	0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
+	0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
+	0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
+	0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
+	0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
+	0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
+	0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
+	0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2,
+}
+
+local function counter(incr)
+	local t1, t2 = 0, 0
+	if 0xFFFFFFFF - t1 < incr then
+		t2 = t2 + 1
+		t1 = incr - (0xFFFFFFFF - t1) - 1
+	else t1 = t1 + incr
+	end
+	return t2, t1
+end
+
+local function BE_toInt(bs, i)
+	return blshift((bs[i] or 0), 24) + blshift((bs[i+1] or 0), 16) + blshift((bs[i+2] or 0), 8) + (bs[i+3] or 0)
+end
+
+local function preprocess(data)
+	local len = #data
+	local proc = {}
+	data[#data+1] = 0x80
+	while #data%64~=56 do data[#data+1] = 0 end
+	local blocks = math.ceil(#data/64)
+	for i = 1, blocks do
+		proc[i] = {}
+		for j = 1, 16 do
+			proc[i][j] = BE_toInt(data, 1+((i-1)*64)+((j-1)*4))
+		end
+	end
+	proc[blocks][15], proc[blocks][16] = counter(len*8)
+	return proc
+end
+
+local function digestblock(w, C)
+	for j = 17, 64 do
+		--local v = w[j-15]
+		local s0 = bxor(bxor(rrotate(w[j-15], 7), rrotate(w[j-15], 18)), brshift(w[j-15], 3))
+		local s1 = bxor(bxor(rrotate(w[j-2], 17), rrotate(w[j-2], 19)), brshift(w[j-2], 10))
+		w[j] = (w[j-16] + s0 + w[j-7] + s1)%mod32
+	end
+	local a, b, c, d, e, f, g, h = upack(C)
+	for j = 1, 64 do
+		local S1 = bxor(bxor(rrotate(e, 6), rrotate(e, 11)), rrotate(e, 25))
+		local ch = bxor(band(e, f), band(bnot(e), g))
+		local temp1 = (h + S1 + ch + K[j] + w[j])%mod32
+		local S0 = bxor(bxor(rrotate(a, 2), rrotate(a, 13)), rrotate(a, 22))
+		local maj = bxor(bxor(band(a, b), band(a, c)), band(b, c))
+		local temp2 = (S0 + maj)%mod32
+		h, g, f, e, d, c, b, a = g, f, e, (d+temp1)%mod32, c, b, a, (temp1+temp2)%mod32
+	end
+	C[1] = (C[1] + a)%mod32
+	C[2] = (C[2] + b)%mod32
+	C[3] = (C[3] + c)%mod32
+	C[4] = (C[4] + d)%mod32
+	C[5] = (C[5] + e)%mod32
+	C[6] = (C[6] + f)%mod32
+	C[7] = (C[7] + g)%mod32
+	C[8] = (C[8] + h)%mod32
+	return C
+end
+
+local mt = {
+	__tostring = function(a) return string.char(unpack(a)) end,
+	__index = {
+		toHex = function(self) return ("%02x"):rep(#self):format(unpack(self)) end,
+		isEqual = function(self, t)
+			if type(t) ~= "table" then return false end
+			if #self ~= #t then return false end
+			local ret = 0
+			for i = 1, #self do
+				ret = bit32.bor(ret, bxor(self[i], t[i]))
+			end
+			return ret == 0
+		end
+	}
+}
+
+local function toBytes(t, n)
+	local b = {}
+	for i = 1, n do
+		b[(i-1)*4+1] = band(brshift(t[i], 24), 0xFF)
+		b[(i-1)*4+2] = band(brshift(t[i], 16), 0xFF)
+		b[(i-1)*4+3] = band(brshift(t[i], 8), 0xFF)
+		b[(i-1)*4+4] = band(t[i], 0xFF)
+	end
+	return setmetatable(b, mt)
+end
+
+local function digest(data)
+	data = data or ""
+	data = type(data) == "table" and {upack(data)} or {tostring(data):byte(1,-1)}
+
+	data = preprocess(data)
+	local C = {upack(H)}
+	for i = 1, #data do C = digestblock(data[i], C) end
+	return toBytes(C, 8)
+end
+
+local function hmac(data, key)
+	data = type(data) == "table" and {upack(data)} or {tostring(data):byte(1,-1)}
+	key = type(key) == "table" and {upack(key)} or {tostring(key):byte(1,-1)}
+
+	local blocksize = 64
+
+	key = #key > blocksize and digest(key) or key
+
+	local ipad = {}
+	local opad = {}
+	local padded_key = {}
+
+	for i = 1, blocksize do
+		ipad[i] = bxor(0x36, key[i] or 0)
+		opad[i] = bxor(0x5C, key[i] or 0)
+	end
+
+	for i = 1, #data do
+		ipad[blocksize+i] = data[i]
+	end
+
+	ipad = digest(ipad)
+
+	for i = 1, blocksize do
+		padded_key[i] = opad[i]
+		padded_key[blocksize+i] = ipad[i]
+	end
+
+	return digest(padded_key)
+end
+
+local function pbkdf2(pass, salt, iter, dklen)
+	local hashlen = 32
+	local block = 1
+	local out = {}
+
+	dklen = dklen or 32
+  salt = type(salt) == "table" and salt or {tostring(salt):byte(1,-1)}
+
+	while dklen > 0 do
+		local ikey = {}
+		local isalt = {upack(salt)}
+		local clen = dklen > hashlen and hashlen or dklen
+
+		isalt[#isalt+1] = band(brshift(block, 24), 0xFF)
+		isalt[#isalt+1] = band(brshift(block, 16), 0xFF)
+		isalt[#isalt+1] = band(brshift(block, 8), 0xFF)
+		isalt[#isalt+1] = band(block, 0xFF)
+
+		for j = 1, iter do
+			isalt = hmac(isalt, pass)
+			for k = 1, clen do ikey[k] = bxor(isalt[k], ikey[k] or 0) end
+			if j % 200 == 0 then os.queueEvent("PBKDF2", j) coroutine.yield("PBKDF2") end
+		end
+		dklen = dklen - clen
+		block = block+1
+		for k = 1, clen do out[#out+1] = ikey[k] end
+	end
+
+	return setmetatable(out, mt)
+end
+
+return {
+	digest = digest,
+	hmac = hmac,
+	pbkdf2 = pbkdf2,
+}

sys/apis/ui/components/Grid.lua

@@ -329,14 +329,23 @@ function UI.Grid:drawRows()
 		local rawRow = self.values[key]
 		local row = self:getDisplayValues(rawRow, key)
 
-		local ind = ' '
-		if self.focused and index == self.index and not self.inactive then
-			ind = self.focusIndicator
-		end
-
 		local selected = index == self.index and not self.inactive
 		local bg = self:getRowBackgroundColor(rawRow, selected)
 		local fg = self:getRowTextColor(rawRow, selected)
+		local focused = self.focused and selected
+
+		self:drawRow(sb, row, focused, bg, fg)
+
+		sb:finish(bg)
+	end
+
+	if sb.y <= self.height then
+		self:clearArea(1, sb.y, self.width, self.height - sb.y + 1)
+	end
+end
+
+function UI.Grid:drawRow(sb, row, focused, bg, fg)
+	local ind = focused and self.focusIndicator or ' '
 
 	for _,col in pairs(self.columns) do
 		sb:write(ind .. safeValue(row[col.key] or ''),
@@ -346,12 +355,6 @@ function UI.Grid:drawRows()
 			fg)
 		ind = ' '
 	end
-		sb:finish(bg)
-	end
-
-	if sb.y <= self.height then
-		self:clearArea(1, sb.y, self.width, self.height - sb.y + 1)
-	end
 end
 
 function UI.Grid:getRowTextColor(row, selected)

sys/apis/util.lua

@@ -560,7 +560,7 @@ function Util.insertString(str, istr, pos)
 end
 
 function Util.split(str, pattern)
-	if not str then error('Util.split: Invalid parameters', 2) end
+	if not str or type(str) ~= 'string' then error('Util.split: Invalid parameters', 2) end
 	pattern = pattern or "(.-)\n"
 	local t = {}
 	local function helper(line) table.insert(t, line) return "" end

sys/apps/Lua.lua

@@ -294,7 +294,6 @@ end
 function page:rawExecute(s)
 	local fn, m
 	local wrapped
-	local t = os.clock()
 
 	fn = load('return (' ..s.. ')', 'lua', nil, sandboxEnv)
 
@@ -303,6 +302,7 @@ function page:rawExecute(s)
 		wrapped = true
 	end
 
+	local t = os.clock()
 	if fn then
 		fn, m = pcall(fn)
 		if #m <= 1 and wrapped then
@@ -311,19 +311,24 @@ function page:rawExecute(s)
 	else
 		fn, m = load(s, 'lua', nil, sandboxEnv)
 		if fn then
+			t = os.clock()
 			fn, m = pcall(fn)
 		end
 	end
 
 	if fn then
-		if m or wrapped then
+		t = os.clock() - t
+
 		local bg, fg = term.getBackgroundColor(), term.getTextColor()
 		term.setTextColor(colors.cyan)
 		term.setBackgroundColor(colors.black)
-			term.write(string.format('out [%.2f]: ', os.clock() - t))
+		term.write(string.format('out [%.2f]: ', t))
 		term.setBackgroundColor(bg)
 		term.setTextColor(fg)
+		if m or wrapped then
 			Util.print(m or 'nil')
+		else
+			print()
 		end
 	else
 		_G.printError(m)

sys/apps/Network.lua

@@ -127,12 +127,14 @@ local function sendCommand(host, command)
 	end
 end
 
+--[[
 function page.ports:eventHandler(event)
 	if event.type == 'grid_select' then
 		shell.openForegroundTab('sniff ' .. event.selected.port)
 	end
 	return UI.SlideOut.eventHandler(self, event)
 end
+]]
 
 function page.ports.grid:update()
 	local function findConnection(port)

sys/apps/ShellLauncher.lua

@@ -24,4 +24,4 @@ kernel.hook('kernel_focus', function(_, eventData)
 	end
 end)
 
-while os.pullEventRaw() do end
+os.pullEventRaw('kernel_halt')

sys/apps/network/redserver.lua

@@ -1,115 +0,0 @@
-local Event = require('event')
-local Util  = require('util')
-
-local fs    = _G.fs
-local modem = _G.device.wireless_modem
-local os    = _G.os
-
-local computerId = os.getComputerID()
-
---modem.open(80)
-
--- https://github.com/golgote/neturl/blob/master/lib/net/url.lua
-local function parseQuery(str)
-	local sep = '&'
-
-	local values = {}
-	for key,val in str:gmatch(string.format('([^%q=]+)(=*[^%q=]*)', sep, sep)) do
-		--local key = decode(key)
-		local keys = {}
-		key = key:gsub('%[([^%]]*)%]', function(v)
-				-- extract keys between balanced brackets
-				if string.find(v, "^-?%d+$") then
-					v = tonumber(v)
-				--else
-					--v = decode(v)
-				end
-				table.insert(keys, v)
-				return "="
-		end)
-		key = key:gsub('=+.*$', "")
-		key = key:gsub('%s', "_") -- remove spaces in parameter name
-		val = val:gsub('^=+', "")
-
-		if not values[key] then
-			values[key] = {}
-		end
-		if #keys > 0 and type(values[key]) ~= 'table' then
-			values[key] = {}
-		elseif #keys == 0 and type(values[key]) == 'table' then
-			values[key] = val --decode(val)
-		end
-
-		local t = values[key]
-		for i,k in ipairs(keys) do
-			if type(t) ~= 'table' then
-				t = {}
-			end
-			if k == "" then
-				k = #t+1
-			end
-			if not t[k] then
-				t[k] = {}
-			end
-			if i == #keys then
-				t[k] = val --decode(val)
-			end
-			t = t[k]
-		end
-	end
-	return values
-end
-
-local function getListing(path, recursive)
-	local list = { }
-	local function listing(p)
-		for _, f in pairs(fs.listEx(p)) do
-			local abs = fs.combine(p, f.name)
-			table.insert(list, {
-				isDir = f.isDir,
-				path = string.sub(abs, #path + 1),
-				size = f.size,
-			})
-			if recursive and f.isDir then
-				listing(abs)
-			end
-		end
-	end
-	listing(path)
-	return list
-end
-
---[[
-Event.on('modem_message', function(_, _, dport, dhost, request)
-	if dport == 80 and dhost == computerId and type(request) == 'table' then
-		if request.method == 'GET' then
-			local query
-			if not request.path or type(request.path) ~= 'string' then
-				return
-			end
-			local path = request.path:gsub('%?(.*)', function(v)
-				query = parseQuery(v)
-				return ''
-			end)
-			if fs.isDir(path) then
-			-- TODO: more validation
-				modem.transmit(request.replyPort, request.replyAddress, {
-					statusCode = 200,
-					contentType = 'table/directory',
-					data = getListing(path, query and query.recursive == 'true'),
-				})
-			elseif fs.exists(path) then
-				modem.transmit(request.replyPort, request.replyAddress, {
-					statusCode = 200,
-					contentType = 'table/file',
-					data = Util.readFile(path),
-				})
-			else
-				modem.transmit(request.replyPort, request.replyAddress, {
-					statusCode = 404,
-				})
-			end
-		end
-	end
-end)
-]]

sys/apps/network/snmp.lua

@@ -156,7 +156,7 @@ local function sendInfo()
 		info.label = os.getComputerLabel()
 		info.uptime = math.floor(os.clock())
 		info.group = network.getGroup()
-		if turtle then
+		if turtle and turtle.getStatus then
 			info.fuel = turtle.getFuelLevel()
 			info.status = turtle.getStatus()
 			info.point = turtle.point

sys/apps/sniff.lua

@@ -1,69 +0,0 @@
-local Event     = require('event')
-local Terminal  = require('terminal')
-local Util      = require('util')
-
-local colors    = _G.colors
-local modem     = _G.device.wireless_modem
-local term      = _G.term
-local textutils = _G.textutils
-
-local terminal = Terminal.window(term.current())
-terminal.setMaxScroll(300)
-local oldTerm = term.redirect(terminal)
-
-local function syntax()
-  error('Syntax: sniff [port]')
-end
-
-local port = ({ ... })[1] or syntax()
-port = tonumber(port) or syntax()
-
-Event.on('modem_message',
-  function(_, _, dport, _, data, _)
-    if dport == port then
-      terminal.scrollBottom()
-      terminal.setTextColor(colors.white)
-      print(textutils.serialize(data))
-    end
-  end)
-
-Event.on('mouse_scroll', function(_, direction)
-  if direction == -1 then
-    terminal.scrollUp()
-  else
-    terminal.scrollDown()
-  end
-end)
-
-local function sniffer(_, _, data)
-  terminal.scrollBottom()
-  terminal.setTextColor(colors.yellow)
-  local ot = term.redirect(terminal)
-  print(textutils.serialize(data))
-  term.redirect(ot)
-end
-
-local socket = _G.transport.sockets[port]
-if socket then
-  if not socket.sniffers then
-    socket.sniffers = { modem.transmit }
-    socket.transmit = function(...)
-      for _,v in pairs(socket.sniffers) do
-        v(...)
-      end
-    end
-  end
-  table.insert(socket.sniffers, sniffer)
-end
-
-local s, m = pcall(Event.pullEvents)
-
-if socket then
-  Util.removeByValue(socket.sniffers, sniffer)
-end
-
-term.redirect(oldTerm)
-
-if not s and m then
-  error(m)
-end

sys/init/6.packages.lua

@@ -6,7 +6,9 @@ local help  = _G.help
 local shell = _ENV.shell
 
 if not fs.exists('usr/config/packages') then
+	pcall(function()
 		Packages:downloadList()
+	end)
 end
 
 local appPaths = Util.split(shell.path(), '(.-):')

sys/init/6.tl3.lua

@@ -52,6 +52,7 @@ function turtle.resetState()
 	state.movePolicy = _defaultMove
 	state.moveCallback = noop
 	state.blacklist = nil
+	state.reference = nil -- gps reference when converting to relative coords
 	Pathing.reset()
 	return true
 end
@@ -77,8 +78,6 @@ local function _dig(name, inspect, dig)
 	return dig()
 end
 
--- override dig
--- optionally check that the block is a certain type
 function turtle.dig(s)
 	return _dig(s, turtle.inspect, turtle.native.dig)
 end
@@ -359,7 +358,7 @@ function turtle.set(args)
 			turtle.setDigPolicy(turtle.getPolicy(v))
 
 		elseif k == 'movePolicy' then
-			turtle.setMovePolicy(turtle.getPolicy(v))
+			state.movePolicy = turtle.getPolicy(v)
 
 		elseif k == 'movementStrategy' then
 			turtle.setMovementStrategy(v)
@@ -379,6 +378,9 @@ function turtle.set(args)
 		elseif k == 'blacklist' then
 			state.blacklist = v
 
+		elseif k == 'reference' then
+			state.reference = v
+
 		else
 			error('Invalid turle.set: ' .. tostring(k))
 		end
@@ -426,6 +428,10 @@ function turtle.setHeading(heading)
 		return false, 'Invalid heading'
 	end
 
+	if heading == turtle.point.heading then
+		return turtle.point
+	end
+
 	local fi = Point.facings[heading]
 	if not fi then
 		return false, 'Invalid heading'