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-rw-r--r--chat.dat1
-rw-r--r--chat.lua14
-rw-r--r--md5.lua167
3 files changed, 10 insertions, 172 deletions
diff --git a/chat.dat b/chat.dat
deleted file mode 100644
index 5086928..0000000
--- a/chat.dat
+++ /dev/null
@@ -1 +0,0 @@
-dep md5
diff --git a/chat.lua b/chat.lua
index e21da68..b757185 100644
--- a/chat.lua
+++ b/chat.lua
@@ -1,5 +1,3 @@
-local md5 = require("md5").hash
-
local p = peripheral.find"manipulator"
assert(p and p.hasModule"plethora:chat")
local m = peripheral.wrap"monitor"
@@ -11,9 +9,17 @@ local function p(...)
term.redirect(term.native())
end
+local score(msg)
+ local s = 0
+ for m in a:gmatch"%-?%d+" do s=s+m end
+ return s
+end
+
while true do
local _,user,msg = os.pullEvent"chat_message"
- local h = md5(msg)
+ local s = score(msg)
+ p(string.format("(%d) <%s> %s",s,user,msg))
+end
- p("<"..user.."> ["..h.."] "..msg)
+
end
diff --git a/md5.lua b/md5.lua
deleted file mode 100644
index b421587..0000000
--- a/md5.lua
+++ /dev/null
@@ -1,167 +0,0 @@
--- from https://github.com/philanc/plc/blob/master/plc/md5.lua
-------------------------------------------------------------------------
--- md5 hash - see RFC 1321 - https://www.ietf.org/rfc/rfc1321.txt
-
-local spack, sunpack = string.pack, string.unpack
-
-------------------------------------------------------------------------
-
-local function FF(a, b, c, d, x, s, ac)
- a = (a + ((b & c) | ((~b) & d)) + x + ac) & 0xffffffff
- a = ((a << s) | (a >> (32-s))) & 0xffffffff
- a = (a + b) & 0xffffffff
- return a
-end
-
-local function GG(a, b, c, d, x, s, ac)
- a = (a + ((b & d) | c & (~d) ) + x + ac) & 0xffffffff
- a = ((a << s) | (a >> (32-s))) & 0xffffffff
- a = (a + b) & 0xffffffff
- return a
-end
-
-local function HH(a, b, c, d, x, s, ac)
- a = (a + ((b ~ c ~ d)) + x + ac) & 0xffffffff
- a = ((a << s) | (a >> (32-s))) & 0xffffffff
- a = (a + b) & 0xffffffff
- return a
-end
-
-local function II(a, b, c, d, x, s, ac)
- a = (a + (c ~ (b | ~d)) + x + ac) & 0xffffffff
- a = ((a << s) | (a >> (32-s))) & 0xffffffff
- a = (a + b) & 0xffffffff
- return a
-end
-
-local function transform(state, input, i, t)
- -- process the 64-byte input block in string 'input' at offset 'i'
- -- t is a uint32[16] array. It is passed as a parameter
- -- for performance reasons
- --
- local a, b, c, d = state[1], state[2], state[3], state[4]
-
- -- load array
- for j = 1, 16 do
- t[j] = sunpack("<I4", input, i)
- i = i + 4
- end
-
- -- Round 1
- a = FF (a, b, c, d, t[ 1], 7, 0xd76aa478)
- d = FF (d, a, b, c, t[ 2], 12, 0xe8c7b756)
- c = FF (c, d, a, b, t[ 3], 17, 0x242070db)
- b = FF (b, c, d, a, t[ 4], 22, 0xc1bdceee)
- a = FF (a, b, c, d, t[ 5], 7, 0xf57c0faf)
- d = FF (d, a, b, c, t[ 6], 12, 0x4787c62a)
- c = FF (c, d, a, b, t[ 7], 17, 0xa8304613)
- b = FF (b, c, d, a, t[ 8], 22, 0xfd469501)
- a = FF (a, b, c, d, t[ 9], 7, 0x698098d8)
- d = FF (d, a, b, c, t[10], 12, 0x8b44f7af)
- c = FF (c, d, a, b, t[11], 17, 0xffff5bb1)
- b = FF (b, c, d, a, t[12], 22, 0x895cd7be)
- a = FF (a, b, c, d, t[13], 7, 0x6b901122)
- d = FF (d, a, b, c, t[14], 12, 0xfd987193)
- c = FF (c, d, a, b, t[15], 17, 0xa679438e)
- b = FF (b, c, d, a, t[16], 22, 0x49b40821)
-
- -- Round 2
- a = GG (a, b, c, d, t[ 2], 5, 0xf61e2562)
- d = GG (d, a, b, c, t[ 7], 9, 0xc040b340)
- c = GG (c, d, a, b, t[12], 14, 0x265e5a51)
- b = GG (b, c, d, a, t[ 1], 20, 0xe9b6c7aa)
- a = GG (a, b, c, d, t[ 6], 5, 0xd62f105d)
- d = GG (d, a, b, c, t[11], 9, 0x2441453)
- c = GG (c, d, a, b, t[16], 14, 0xd8a1e681)
- b = GG (b, c, d, a, t[ 5], 20, 0xe7d3fbc8)
- a = GG (a, b, c, d, t[10], 5, 0x21e1cde6)
- d = GG (d, a, b, c, t[15], 9, 0xc33707d6)
- c = GG (c, d, a, b, t[ 4], 14, 0xf4d50d87)
- b = GG (b, c, d, a, t[ 9], 20, 0x455a14ed)
- a = GG (a, b, c, d, t[14], 5, 0xa9e3e905)
- d = GG (d, a, b, c, t[ 3], 9, 0xfcefa3f8)
- c = GG (c, d, a, b, t[ 8], 14, 0x676f02d9)
- b = GG (b, c, d, a, t[13], 20, 0x8d2a4c8a)
-
- -- Round 3
- a = HH (a, b, c, d, t[ 6], 4, 0xfffa3942)
- d = HH (d, a, b, c, t[ 9], 11, 0x8771f681)
- c = HH (c, d, a, b, t[12], 16, 0x6d9d6122)
- b = HH (b, c, d, a, t[15], 23, 0xfde5380c)
- a = HH (a, b, c, d, t[ 2], 4, 0xa4beea44)
- d = HH (d, a, b, c, t[ 5], 11, 0x4bdecfa9)
- c = HH (c, d, a, b, t[ 8], 16, 0xf6bb4b60)
- b = HH (b, c, d, a, t[11], 23, 0xbebfbc70)
- a = HH (a, b, c, d, t[14], 4, 0x289b7ec6)
- d = HH (d, a, b, c, t[ 1], 11, 0xeaa127fa)
- c = HH (c, d, a, b, t[ 4], 16, 0xd4ef3085)
- b = HH (b, c, d, a, t[ 7], 23, 0x4881d05)
- a = HH (a, b, c, d, t[10], 4, 0xd9d4d039)
- d = HH (d, a, b, c, t[13], 11, 0xe6db99e5)
- c = HH (c, d, a, b, t[16], 16, 0x1fa27cf8)
- b = HH (b, c, d, a, t[ 3], 23, 0xc4ac5665)
-
- -- Round 4
- a = II (a, b, c, d, t[ 1], 6, 0xf4292244)
- d = II (d, a, b, c, t[ 8], 10, 0x432aff97)
- c = II (c, d, a, b, t[15], 15, 0xab9423a7)
- b = II (b, c, d, a, t[ 6], 21, 0xfc93a039)
- a = II (a, b, c, d, t[13], 6, 0x655b59c3)
- d = II (d, a, b, c, t[ 4], 10, 0x8f0ccc92)
- c = II (c, d, a, b, t[11], 15, 0xffeff47d)
- b = II (b, c, d, a, t[ 2], 21, 0x85845dd1)
- a = II (a, b, c, d, t[ 9], 6, 0x6fa87e4f)
- d = II (d, a, b, c, t[16], 10, 0xfe2ce6e0)
- c = II (c, d, a, b, t[ 7], 15, 0xa3014314)
- b = II (b, c, d, a, t[14], 21, 0x4e0811a1)
- a = II (a, b, c, d, t[ 5], 6, 0xf7537e82)
- d = II (d, a, b, c, t[12], 10, 0xbd3af235)
- c = II (c, d, a, b, t[ 3], 15, 0x2ad7d2bb)
- b = II (b, c, d, a, t[10], 21, 0xeb86d391)
-
- state[1] = (state[1] + a) & 0xffffffff
- state[2] = (state[2] + b) & 0xffffffff
- state[3] = (state[3] + c) & 0xffffffff
- state[4] = (state[4] + d) & 0xffffffff
-end --transform()
-
-local function md5(input)
- -- initialize state
- local state = { 0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476 }
- local inputlen = #input
- local inputbits = inputlen * 8 -- input length in bits
- local r = inputlen -- number of unprocessed bytes
- local i = 1 -- index in input string
- local ibt = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0} -- input block uint32[16]
- -- process as many 64-byte blocks as possible
- while r >= 64 do
- -- process block
- transform(state, input, i, ibt)
- i = i + 64 -- update input index
- r = r - 64 -- update number of unprocessed bytes
- end
- -- finalize. must append to input a mandatory 0x80 byte, some
- -- padding, and the input bit-length ('inputbits')
- local lastblock -- the rest of input .. some padding .. inputbits
- local padlen -- padding length in bytes
- if r < 56 then padlen = 55 - r else padlen = 119 - r end
- lastblock = input:sub(i) -- remaining input
- .. '\x80' .. ('\0'):rep(padlen) --padding
- .. spack("<I8", inputbits) -- length in bits
- assert(#lastblock == 64 or #lastblock == 128)
- transform(state, lastblock, 1, ibt)
- if #lastblock == 128 then
- transform(state, lastblock, 65, ibt)
- end
- -- return the digest
- local digest = spack("<I4I4I4I4", state[1], state[2], state[3], state[4])
- return digest
-end --md5()
-
---~ bin = require "plc.bin"
---~ print(bin.stohex(md5'abc'))
---~ print(bin.stohex(md5""))
-
-return { -- md5 module
- hash = md5,
-}