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| 1 | local accessLevel = 2 | |
| 2 | local cryptKey = {1, 2, 3, 4, 5}
| |
| 3 | local modemPort = 199 | |
| 4 | ||
| 5 | ||
| 6 | ||
| 7 | local component = require("component")
| |
| 8 | local gpu = component.gpu | |
| 9 | local event = require("event")
| |
| 10 | local ser = require("serialization")
| |
| 11 | local term = require("term")
| |
| 12 | local computer = component.computer | |
| 13 | ||
| 14 | local door = component.os_door | |
| 15 | local magReader = component.os_magreader | |
| 16 | ||
| 17 | local modem = component.modem | |
| 18 | ||
| 19 | ||
| 20 | local function convert( chars, dist, inv ) | |
| 21 | return string.char( ( string.byte( chars ) - 32 + ( inv and -dist or dist ) ) % 95 + 32 ) | |
| 22 | end | |
| 23 | ||
| 24 | local function crypt(str,k,inv) | |
| 25 | local enc= ""; | |
| 26 | for i=1,#str do | |
| 27 | if(#str-k[5] >= i or not inv)then | |
| 28 | for inc=0,3 do | |
| 29 | if(i%4 == inc)then | |
| 30 | enc = enc .. convert(string.sub(str,i,i),k[inc+1],inv); | |
| 31 | break; | |
| 32 | end | |
| 33 | end | |
| 34 | end | |
| 35 | end | |
| 36 | if(not inv)then | |
| 37 | for i=1,k[5] do | |
| 38 | enc = enc .. string.char(math.random(32,126)); | |
| 39 | end | |
| 40 | end | |
| 41 | return enc; | |
| 42 | end | |
| 43 | ||
| 44 | ||
| 45 | function splitString(str, sep) | |
| 46 | local sep, fields = sep or ":", {}
| |
| 47 | local pattern = string.format("([^%s]+)", sep)
| |
| 48 | str:gsub(pattern, function(c) fields[#fields+1] = c end) | |
| 49 | return fields | |
| 50 | end | |
| 51 | ||
| 52 | term.clear() | |
| 53 | print("Security door Access level : " .. tostring(accessLevel))
| |
| 54 | print("---------------------------------------------------------------------------")
| |
| 55 | ||
| 56 | if modem.isOpen(modemPort) == false then | |
| 57 | modem.open(modemPort) | |
| 58 | end | |
| 59 | data = crypt(tostring(accessLevel), cryptKey) | |
| 60 | modem.broadcast(modemPort, "setlevel", data) | |
| 61 | ||
| 62 | while true do | |
| 63 | ev, _, user, str, uuid = event.pull("magData")
| |
| 64 | local data = crypt(str, cryptKey, true) | |
| 65 | if ev then | |
| 66 | local tmpTable = splitString(data," ") | |
| 67 | term.write(tmpTable[3] .. ":") | |
| 68 | if modem.isOpen(modemPort) == false then | |
| 69 | modem.open(modemPort) | |
| 70 | end | |
| 71 | data = crypt(tmpTable[3], cryptKey) | |
| 72 | modem.broadcast(modemPort, "checkuser", data) | |
| 73 | local e, _, from, port, _, msg = event.pull(1, "modem_message") | |
| 74 | if e then | |
| 75 | data = crypt(msg, cryptKey, true) | |
| 76 | -- print(data) | |
| 77 | if data == "true" then | |
| 78 | term.write("Access granted\n")
| |
| 79 | computer.beep() | |
| 80 | door.toggle() | |
| 81 | os.sleep(2) | |
| 82 | door.toggle() | |
| 83 | else | |
| 84 | term.write("Access denied\n")
| |
| 85 | end | |
| 86 | else | |
| 87 | term.write("server timeout\n")
| |
| 88 | end | |
| 89 | end | |
| 90 | end |
