BigAPI

--[[
+---------------------------------+
|								  |
|			CLOUD UTIL			  |
|		Various		Useful		  |
|			  Snippets			  |
|								  |
+---------------------------------+

This potentially massive API file will contain
a variety of different API's that I have created
over the few years that I've worked with CC and Lua.



--]]


--[[

Networking
	|Includes:
	|Libspoofer : Spoofs ID's for Rednet and formats the message properly over modem
	|Libpcap : Captures all Rednet traffic
--]]

_G.libspoofer = {}
_G.libpcap = {}

-------------------------------------------
local modem = peripheral.find("modem")

libspoofer.send = function(msg, to, from)
  id = math.random(1, 800000)
  local message = {
    nMessageID = id,
    nRecipient = to,
    message = msg,
    sProtocol = nil,
  }
  modem.transmit(to, from, message)
end
-------------------------------------------
-------------------------------------------

local event, side, sChannel, rChannel, data, dist

local modem = peripheral.find("modem")


_G.libpcap.cap = function()

  modem.close(os.getComputerID())
  modem.close(65535)
  modem.open(65533)
  modem.open(65534)

  event, side, sChannel, rChannel, data, dist = os.pullEvent("modem_message")
  local table = {
      event = event,
      side = side,
      recipient = sChannel,
      sender = rChannel,
      data = data,
      distance = dist}
  modem.close(65533)
  modem.close(65534)
  modem.open(65535)
  modem.open(os.getComputerID())
  return table
end

-------------------------------------------
-------------------------------------------


--[[

Miscellaneous
	|Includes:
	|Explode/Uexplode : Splits strings on characters (returns table of all split points) and then allows for recombining with specified character(s)
	|klua : API to communicate with the krist server (also has a built in sha256 function for hashing) | WARNING: BIG API INCOMING
--]]

_G.string.explode = function(str,char)
    local tbl = {}
    if char == "" then
            for i=1, str:len() do
                    table.insert(tbl,str:sub(i,i))
            end
            return tbl
    elseif not str:find(char) then
            return {str}
    else
            local _,amt = str:gsub(char," ")
            for i=1, amt+1 do
                    if str:find(char) then
                            local x,y = str:find(char)
                            local rep = str:sub(1,x-1)
                            table.insert(tbl,rep)
                            str = str:sub(y+1, str:len())
                    else
                            table.insert(tbl,str)
                    end
            end
    end
    return tbl
end


_G.string.uexplode = function(tbl,char)
    local ret = ""
    for k,v in pairs(tbl) do
            if k == #tbl then
                    ret = ret..v
            else
                    ret = ret..v..char
            end
    end
    return ret
end





_G.klua = {}
--Sha256 stuff here
local MOD = 2^32
local MODM = MOD-1

local function memoize(f)
    local mt = {}
    local t = setmetatable({}, mt)
    function mt:__index(k)
        local v = f(k)
        t[k] = v
        return v
    end
    return t
end

local function make_bitop_uncached(t, m)
    local function bitop(a, b)
        local res,p = 0,1
        while a ~= 0 and b ~= 0 do
            local am, bm = a % m, b % m
            res = res + t[am][bm] * p
            a = (a - am) / m
            b = (b - bm) / m
            p = p*m
        end
        res = res + (a + b) * p
        return res
    end
    return bitop
end

local function make_bitop(t)
    local op1 = make_bitop_uncached(t,2^1)
    local op2 = memoize(function(a) return memoize(function(b) return op1(a, b) end) end)
    return make_bitop_uncached(op2, 2 ^ (t.n or 1))
end

local bxor1 = make_bitop({[0] = {[0] = 0,[1] = 1}, [1] = {[0] = 1, [1] = 0}, n = 4})

local function bxor(a, b, c, ...)
    local z = nil
    if b then
        a = a % MOD
        b = b % MOD
        z = bxor1(a, b)
        if c then z = bxor(z, c, ...) end
        return z
    elseif a then return a % MOD
    else return 0 end
end

local function band(a, b, c, ...)
    local z
    if b then
        a = a % MOD
        b = b % MOD
        z = ((a + b) - bxor1(a,b)) / 2
        if c then z = bit32_band(z, c, ...) end
        return z
    elseif a then return a % MOD
    else return MODM end
end

local function bnot(x) return (-1 - x) % MOD end

local function rshift1(a, disp)
    if disp < 0 then return lshift(a,-disp) end
    return math.floor(a % 2 ^ 32 / 2 ^ disp)
end

local function rshift(x, disp)
    if disp > 31 or disp < -31 then return 0 end
    return rshift1(x % MOD, disp)
end

local function lshift(a, disp)
    if disp < 0 then return rshift(a,-disp) end
    return (a * 2 ^ disp) % 2 ^ 32
end

local function rrotate(x, disp)
    x = x % MOD
    disp = disp % 32
    local low = band(x, 2 ^ disp - 1)
    return rshift(x, disp) + lshift(low, 32 - disp)
end

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 str2hexa(s)
    return (string.gsub(s, ".", function(c) return string.format("%02x", string.byte(c)) end))
end

local function num2s(l, n)
    local s = ""
    for i = 1, n do
        local rem = l % 256
        s = string.char(rem) .. s
        l = (l - rem) / 256
    end
    return s
end

local function s232num(s, i)
    local n = 0
    for i = i, i + 3 do n = n*256 + string.byte(s, i) end
    return n
end

local function preproc(msg, len)
    local extra = 64 - ((len + 9) % 64)
    len = num2s(8 * len, 8)
    msg = msg .. "\128" .. string.rep("\0", extra) .. len
    assert(#msg % 64 == 0)
    return msg
end

local function initH256(H)
    H[1] = 0x6a09e667
    H[2] = 0xbb67ae85
    H[3] = 0x3c6ef372
    H[4] = 0xa54ff53a
    H[5] = 0x510e527f
    H[6] = 0x9b05688c
    H[7] = 0x1f83d9ab
    H[8] = 0x5be0cd19
    return H
end

local function digestblock(msg, i, H)
    local w = {}
    for j = 1, 16 do w[j] = s232num(msg, i + (j - 1)*4) end
    for j = 17, 64 do
        local v = w[j - 15]
        local s0 = bxor(rrotate(v, 7), rrotate(v, 18), rshift(v, 3))
        v = w[j - 2]
        w[j] = w[j - 16] + s0 + w[j - 7] + bxor(rrotate(v, 17), rrotate(v, 19), rshift(v, 10))
    end

    local a, b, c, d, e, f, g, h = H[1], H[2], H[3], H[4], H[5], H[6], H[7], H[8]
    for i = 1, 64 do
        local s0 = bxor(rrotate(a, 2), rrotate(a, 13), rrotate(a, 22))
        local maj = bxor(band(a, b), band(a, c), band(b, c))
        local t2 = s0 + maj
        local s1 = bxor(rrotate(e, 6), rrotate(e, 11), rrotate(e, 25))
        local ch = bxor (band(e, f), band(bnot(e), g))
        local t1 = h + s1 + ch + k[i] + w[i]
        h, g, f, e, d, c, b, a = g, f, e, d + t1, c, b, a, t1 + t2
    end

    H[1] = band(H[1] + a)
    H[2] = band(H[2] + b)
    H[3] = band(H[3] + c)
    H[4] = band(H[4] + d)
    H[5] = band(H[5] + e)
    H[6] = band(H[6] + f)
    H[7] = band(H[7] + g)
    H[8] = band(H[8] + h)
end

_G.klua.sha256 = function(msg)
    msg = preproc(msg, #msg)
    local H = initH256({})
    for i = 1, #msg, 64 do digestblock(msg, i, H) end
    return str2hexa(num2s(H[1], 4) .. num2s(H[2], 4) .. num2s(H[3], 4) .. num2s(H[4], 4) ..
        num2s(H[5], 4) .. num2s(H[6], 4) .. num2s(H[7], 4) .. num2s(H[8], 4))
end

local function makeaddressbyte(j)
  if j <= 6 then return "0"
  elseif j <= 13 then return "1"
  elseif j <= 20 then return "2"
  elseif j <= 27 then return "3"
  elseif j <= 34 then return "4"
  elseif j <= 41 then return "5"
  elseif j <= 48 then return "6"
  elseif j <= 55 then return "7"
  elseif j <= 62 then return "8"
  elseif j <= 69 then return "9"
  elseif j <= 76 then return "a"
  elseif j <= 83 then return "b"
  elseif j <= 90 then return "c"
  elseif j <= 97 then return "d"
  elseif j <= 104 then return "e"
  elseif j <= 111 then return "f"
  elseif j <= 118 then return "g"
  elseif j <= 125 then return "h"
  elseif j <= 132 then return "i"
  elseif j <= 139 then return "j"
  elseif j <= 146 then return "k"
  elseif j <= 153 then return "l"
  elseif j <= 160 then return "m"
  elseif j <= 167 then return "n"
  elseif j <= 174 then return "o"
  elseif j <= 181 then return "p"
  elseif j <= 188 then return "q"
  elseif j <= 195 then return "r"
  elseif j <= 202 then return "s"
  elseif j <= 209 then return "t"
  elseif j <= 216 then return "u"
  elseif j <= 223 then return "v"
  elseif j <= 230 then return "w"
  elseif j <= 237 then return "x"
  elseif j <= 244 then return "y"
  elseif j <= 251 then return "z"
  else return "e"
  end
end

_G.klua.makev2address = function(key)
  local protein = {}
  local stick = klua.sha256(klua.sha256(key))
  local n = 0
  local link = 0
  local v2 = "k"
  repeat
    if n < 9 then protein[n] = string.sub(stick,0,2)
    stick = sha256(sha256(stick)) end
    n = n + 1
  until n == 9
  n = 0
  repeat
    link = tonumber(string.sub(stick,1+(2*n),2+(2*n)),16) % 9
    if string.len(protein[link]) ~= 0 then
      v2 = v2 .. makeaddressbyte(tonumber(protein[link],16))
      protein[link] = ''
      n = n + 1
    else
      stick = sha256(stick)
    end
  until n == 9
  return v2
end



--Rest of the code

--Creates a privatekey out of the password
_G.klua.ToPriv = function(input)
    return sha256("KRISTWALLET"..input).."-000"
end

site = "http://krist.ceriat.net/" --The site for all requests

--Get info on an address
_G.klua.getInfo = function(addr)
	return http.get(site.."addresses/"..addr).readAll()
end

--Send Funds
_G.klua.sendFunds = function(InP,to,amount)
    return http.post(site.."transactions/","privatekey="..ToPriv(InP).."&to="..to.."&amount="..amount).readAll()
end

--Lookup a NAME.kst
_G.klua.nameLook = function(NAME)
    return http.get(site.."names/"..NAME).readAll()
end

--Register NAME.kst to given password's private key address.
_G.klua.nameReg = function(NAME,InP)
    return http.post(site.."names/"..NAME.."/","privatekey="..ToPriv(InP)).readAll()
end

--List latest transactions
_G.klua.lateTrans = function()
    return http.get(site.."transactions/latest").readAll()
end

--Gets the Krist in circulation
_G.klua.getCirc = function()
    return http.get(site.."supply").readAll()
end

--Gets the Message of the day
_G.klua.MOTD = function()
    return http.get(site.."motd").readAll()
end

--Get the current work
_G.klua.work = function()
    return http.get(site.."work").readAll()
end

--Authenticate an address with the server via the privatekey
_G.klua.authAddr = function(privateKey)
    return http.post(site.."login","privatekey="..privateKey).readAll()
end

--List all names
_G.klua.lNames = function()
    return http.get(site.."names").readAll()
end

_G.klua.myanmar = function()
    return "Marisa stole the entire country of Myanmar"
end