RPC-Based SSH Installer

local clientID = "7aEnmrvX"
local serverID = "WL0P040B"
local rpcID = "AJEnqBtA"

local startup = [[
for i,v in ipairs(rs.getSides()) do
    if peripheral.getType(v) == "modem" then
        rednet.open(v)
    end
end
os.loadAPI("rpc")
term.clear()
term.setCursorPos(1,1)
if fs.exists("startup2") then
    parallel.waitForAll(function() shell.run("startup2") end, rpc.run)
else
    parallel.waitForAll(function() shell.run("shell") end, rpc.run)
end
]]

if not fs.exists("rpc") then
    local webHandle = http.get("http://pastebin.com/raw.php?i="..rpcID)
    local data = webHandle.readAll()
    webHandle.close()
    local fileHandle = fs.open("rpc", "w")
    fileHandle.write(data)
    fileHandle.close()
end

local selection = 0

while true do
    term.clear()
    term.setCursorPos(1,1)
    print("RPC - Based SSH Installer")
    print("Please make a selection:")
    print("1 - Client")
    print("2 - Server")
    write("> ")
    selection = tonumber(read())
    if selection then
        if selection == 1 or selection == 2 then
            break
        end
    end
end

if selection == 1 then
    local webHandle = http.get("http://pastebin.com/raw.php?i="..clientID)
    local data = webHandle.readAll()
    webHandle.close()
    local fileHandle = fs.open("client", "w")
    fileHandle.write(data)
    fileHandle.close()
elseif selection == 2 then
    local webHandle = http.get("http://pastebin.com/raw.php?i="..serverID)
    local data = webHandle.readAll()
    webHandle.close()
    local fileHandle = fs.open("server", "w")
    fileHandle.write(data)
    fileHandle.close()
    if fs.exists("startup") then
        fs.copy("startup", "startup2")
    end
    local fileHandle = fs.open("startup", "w")
    fileHandle.write(startup)
    fileHandle.close()
end

print("Finished.")
os.sleep(2)
os.reboot()