Gecko [ tsuru-no-tsurugi.tokyo ]

Name	Size	Permission	Date
data	[ DIR ]	drwxr-xr-x	2024-08-29 14:21
afp.lua	71.48 KB	-rw-r--r--	2023-01-13 02:40
ajp.lua	16.77 KB	-rw-r--r--	2023-01-13 02:40
amqp.lua	10.41 KB	-rw-r--r--	2023-01-13 02:40
anyconnect.lua	4.31 KB	-rw-r--r--	2023-01-13 02:40
asn1.lua	14.57 KB	-rw-r--r--	2023-01-13 02:40
base32.lua	7.36 KB	-rw-r--r--	2023-01-13 02:40
base64.lua	5.83 KB	-rw-r--r--	2023-01-13 02:40
bin.lua	12.99 KB	-rw-r--r--	2023-01-13 02:40
bitcoin.lua	18.25 KB	-rw-r--r--	2023-01-13 02:40
bits.lua	2.54 KB	-rw-r--r--	2023-01-13 02:40
bittorrent.lua	35.76 KB	-rw-r--r--	2023-01-13 02:40
bjnp.lua	9.55 KB	-rw-r--r--	2023-01-13 02:40
brute.lua	50.64 KB	-rw-r--r--	2023-01-13 02:40
cassandra.lua	5.48 KB	-rw-r--r--	2023-01-13 02:40
citrixxml.lua	16 KB	-rw-r--r--	2023-01-13 02:40
coap.lua	75.1 KB	-rw-r--r--	2023-01-13 02:40
comm.lua	11.03 KB	-rw-r--r--	2023-01-13 02:40
creds.lua	18.26 KB	-rw-r--r--	2023-01-13 02:40
cvs.lua	3.05 KB	-rw-r--r--	2023-01-13 02:40
datafiles.lua	11.05 KB	-rw-r--r--	2023-01-13 02:40
datetime.lua	7.5 KB	-rw-r--r--	2023-01-13 02:40
dhcp.lua	28.57 KB	-rw-r--r--	2023-01-13 02:40
dhcp6.lua	19.86 KB	-rw-r--r--	2023-01-13 02:40
dns.lua	51.07 KB	-rw-r--r--	2023-01-13 02:40
dnsbl.lua	19.01 KB	-rw-r--r--	2023-01-13 02:40
dnssd.lua	12.61 KB	-rw-r--r--	2023-01-13 02:40
drda.lua	24.08 KB	-rw-r--r--	2023-01-13 02:40
eap.lua	7.54 KB	-rw-r--r--	2023-01-13 02:40
eigrp.lua	12.98 KB	-rw-r--r--	2023-01-13 02:40
formulas.lua	5.68 KB	-rw-r--r--	2023-01-13 02:40
ftp.lua	9.03 KB	-rw-r--r--	2023-01-13 02:40
geoip.lua	1.71 KB	-rw-r--r--	2023-01-13 02:40
giop.lua	18.42 KB	-rw-r--r--	2023-01-13 02:40
gps.lua	3.38 KB	-rw-r--r--	2023-01-13 02:40
http.lua	117.07 KB	-rw-r--r--	2023-01-13 02:40
httpspider.lua	36.65 KB	-rw-r--r--	2023-01-13 02:40
iax2.lua	9.58 KB	-rw-r--r--	2023-01-13 02:40
idna.lua	17.14 KB	-rw-r--r--	2023-01-13 02:40
ike.lua	14.63 KB	-rw-r--r--	2023-01-13 02:40
imap.lua	9.59 KB	-rw-r--r--	2023-01-13 02:40
informix.lua	39.93 KB	-rw-r--r--	2023-01-13 02:40
ipOps.lua	29.06 KB	-rw-r--r--	2023-01-13 02:40
ipmi.lua	8.08 KB	-rw-r--r--	2023-01-13 02:40
ipp.lua	12.57 KB	-rw-r--r--	2023-01-13 02:40
irc.lua	757 B	-rw-r--r--	2023-01-13 02:40
iscsi.lua	21.38 KB	-rw-r--r--	2023-01-13 02:40
isns.lua	14.98 KB	-rw-r--r--	2023-01-13 02:40
jdwp.lua	43.52 KB	-rw-r--r--	2023-01-13 02:40
json.lua	11.62 KB	-rw-r--r--	2023-01-13 02:40
knx.lua	2.42 KB	-rw-r--r--	2023-01-13 02:40
ldap.lua	31.94 KB	-rw-r--r--	2023-01-13 02:40
lfs.luadoc	1.68 KB	-rw-r--r--	2023-01-13 02:40
libssh2-utility.lua	4.69 KB	-rw-r--r--	2023-01-13 02:40
libssh2.luadoc	4.75 KB	-rw-r--r--	2023-01-13 02:40
listop.lua	4.66 KB	-rw-r--r--	2023-01-13 02:40
lpeg-utility.lua	5.64 KB	-rw-r--r--	2023-01-13 02:40
lpeg.luadoc	351 B	-rw-r--r--	2023-01-13 02:40
ls.lua	10.96 KB	-rw-r--r--	2023-01-13 02:40
match.lua	2.05 KB	-rw-r--r--	2023-01-13 02:40
membase.lua	9.93 KB	-rw-r--r--	2023-01-13 02:40
mobileme.lua	8.46 KB	-rw-r--r--	2023-01-13 02:40
mongodb.lua	21.3 KB	-rw-r--r--	2023-01-13 02:40
mqtt.lua	28.86 KB	-rw-r--r--	2023-01-13 02:40
msrpc.lua	190.07 KB	-rw-r--r--	2023-01-13 02:40
msrpcperformance.lua	29.65 KB	-rw-r--r--	2023-01-13 02:40
msrpctypes.lua	168.52 KB	-rw-r--r--	2023-01-13 02:40
mssql.lua	109.43 KB	-rw-r--r--	2023-01-13 02:40
multicast.lua	5.97 KB	-rw-r--r--	2023-01-13 02:40
mysql.lua	16.03 KB	-rw-r--r--	2023-01-13 02:40
natpmp.lua	5.11 KB	-rw-r--r--	2023-01-13 02:40
nbd.lua	16.04 KB	-rw-r--r--	2023-01-13 02:40
ncp.lua	35.64 KB	-rw-r--r--	2023-01-13 02:40
ndmp.lua	11.43 KB	-rw-r--r--	2023-01-13 02:40
netbios.lua	14.44 KB	-rw-r--r--	2023-01-13 02:40
nmap.luadoc	40.34 KB	-rw-r--r--	2023-01-13 02:40
nrpc.lua	4.46 KB	-rw-r--r--	2023-01-13 02:40
nsedebug.lua	3.49 KB	-rw-r--r--	2023-01-13 02:40
omp2.lua	4.78 KB	-rw-r--r--	2023-01-13 02:40
oops.lua	3.61 KB	-rw-r--r--	2023-01-13 02:40
openssl.luadoc	7.5 KB	-rw-r--r--	2023-01-13 02:40
ospf.lua	15.29 KB	-rw-r--r--	2023-01-13 02:40
packet.lua	36.18 KB	-rw-r--r--	2023-01-13 02:40
pcre.luadoc	6.79 KB	-rw-r--r--	2023-01-13 02:40
pgsql.lua	20.6 KB	-rw-r--r--	2023-01-13 02:40
pop3.lua	5.74 KB	-rw-r--r--	2023-01-13 02:40
pppoe.lua	29.42 KB	-rw-r--r--	2023-01-13 02:40
proxy.lua	11.37 KB	-rw-r--r--	2023-01-13 02:40
punycode.lua	11.5 KB	-rw-r--r--	2023-01-13 02:40
rand.lua	2.7 KB	-rw-r--r--	2023-01-13 02:40
rdp.lua	14.73 KB	-rw-r--r--	2023-01-13 02:40
re.lua	8.22 KB	-rw-r--r--	2023-01-13 02:40
redis.lua	3.61 KB	-rw-r--r--	2023-01-13 02:40
rmi.lua	47.77 KB	-rw-r--r--	2023-01-13 02:40
rpc.lua	107.64 KB	-rw-r--r--	2023-01-13 02:40
rpcap.lua	11.08 KB	-rw-r--r--	2023-01-13 02:40
rsync.lua	5.22 KB	-rw-r--r--	2023-01-13 02:40
rtsp.lua	8.62 KB	-rw-r--r--	2023-01-13 02:40
sasl.lua	16.51 KB	-rw-r--r--	2023-01-13 02:40
shortport.lua	11.99 KB	-rw-r--r--	2023-01-13 02:40
sip.lua	30.07 KB	-rw-r--r--	2023-01-13 02:40
slaxml.lua	17.9 KB	-rw-r--r--	2023-01-13 02:40
smb.lua	173.22 KB	-rw-r--r--	2023-01-13 02:40
smb2.lua	15.34 KB	-rw-r--r--	2023-01-13 02:40
smbauth.lua	37.33 KB	-rw-r--r--	2023-01-13 02:40
smtp.lua	19.85 KB	-rw-r--r--	2023-01-13 02:40
snmp.lua	16 KB	-rw-r--r--	2023-01-13 02:40
socks.lua	8.25 KB	-rw-r--r--	2023-01-13 02:40
srvloc.lua	10.99 KB	-rw-r--r--	2023-01-13 02:40
ssh1.lua	9.15 KB	-rw-r--r--	2023-01-13 02:40
ssh2.lua	11.73 KB	-rw-r--r--	2023-01-13 02:40
sslcert.lua	33.35 KB	-rw-r--r--	2023-01-13 02:40
sslv2.lua	9.68 KB	-rw-r--r--	2023-01-13 02:40
stdnse.lua	32.64 KB	-rw-r--r--	2023-01-13 02:40
strbuf.lua	4.52 KB	-rw-r--r--	2023-01-13 02:40
strict.lua	2.53 KB	-rw-r--r--	2023-01-13 02:40
stringaux.lua	4.32 KB	-rw-r--r--	2023-01-13 02:40
stun.lua	11.08 KB	-rw-r--r--	2023-01-13 02:40
tab.lua	3.35 KB	-rw-r--r--	2023-01-13 02:40
tableaux.lua	2.06 KB	-rw-r--r--	2023-01-13 02:40
target.lua	3.93 KB	-rw-r--r--	2023-01-13 02:40
tftp.lua	9.41 KB	-rw-r--r--	2023-01-13 02:40
tls.lua	58.05 KB	-rw-r--r--	2023-01-13 02:40
tn3270.lua	46.99 KB	-rw-r--r--	2023-01-13 02:40
tns.lua	64.16 KB	-rw-r--r--	2023-01-13 02:40
unicode.lua	14.23 KB	-rw-r--r--	2023-01-13 02:40
unittest.lua	12.41 KB	-rw-r--r--	2023-01-13 02:40
unpwdb.lua	10.42 KB	-rw-r--r--	2023-01-13 02:40
upnp.lua	11.18 KB	-rw-r--r--	2023-01-13 02:40
url.lua	16.7 KB	-rw-r--r--	2023-01-13 02:40
versant.lua	8.58 KB	-rw-r--r--	2023-01-13 02:40
vnc.lua	25.54 KB	-rw-r--r--	2023-01-13 02:40
vulns.lua	76.45 KB	-rw-r--r--	2023-01-13 02:40
vuzedht.lua	16.21 KB	-rw-r--r--	2023-01-13 02:40
wsdd.lua	11.98 KB	-rw-r--r--	2023-01-13 02:40
xdmcp.lua	12.09 KB	-rw-r--r--	2023-01-13 02:40
xmpp.lua	15.91 KB	-rw-r--r--	2023-01-13 02:40
zlib.luadoc	4.88 KB	-rw-r--r--	2023-01-13 02:40

Rename

---
-- Bit manipulation library.
--
-- @author Patrick Donnelly <batrick@batbytes.com>
-- @copyright Same as Nmap -- see https://nmap.org/book/man-legal.html
-- @see https://www.lua.org/manual/5.3/manual.html#3.4.2
--
-- @class module
-- @name bits

local assert = assert
local error = error
local unittest = require "unittest"

local _ENV = {}

--- Reverses bits in integer.
--
-- @param n The integer.
-- @param size The bit width of the integer (default: 8).
-- @return The reversed integer.
function reverse (n, size)
    if not size or size == 8 then
        n = n & 0xff
        n = (n & 0xf0) >> 4 | (n & 0x0f) << 4
        n = (n & 0xcc) >> 2 | (n & 0x33) << 2
        n = (n & 0xaa) >> 1 | (n & 0x55) << 1
        n = n & 0xff
    elseif size == 32 then
        n = n & 0xffffffff
        n = ((n >> 1) & 0x55555555) | ((n & 0x55555555) << 1);
        n = ((n >> 2) & 0x33333333) | ((n & 0x33333333) << 2);
        n = ((n >> 4) & 0x0F0F0F0F) | ((n & 0x0F0F0F0F) << 4);
        n = ((n >> 8) & 0x00FF00FF) | ((n & 0x00FF00FF) << 8);
        n = ( n >> 16             ) | ( n               << 16);
        n = n & 0xffffffff
    else
        error("invalid size: "..size)
    end
    return n
end

--- Returns <code>a</code> arithmetically right-shifted by <code>b</code>
-- places.
-- @param a Number to perform the shift on.
-- @param b Number of shifts.
function arshift(a, b)
    if a < 0 then
        if a % 2 == 0 then -- even?
            return a // (1<<b)
        else
            return a // (1<<b) + 1
        end
    else
        return a >> b
    end
end

if not unittest.testing() then
  return _ENV
end

local equal = unittest.equal

test_suite = unittest.TestSuite:new()
test_suite:add_test(equal(reverse(0x00, 8), 0x00), "reverse 8-bit number")
test_suite:add_test(equal(reverse(0x01, 8), 0x80), "reverse 8-bit number")
test_suite:add_test(equal(reverse(0x80, 8), 0x01), "reverse 8-bit number")
test_suite:add_test(equal(reverse(0xff, 8), 0xff), "reverse 8-bit number")
test_suite:add_test(equal(reverse(0x88, 8), 0x11), "reverse 8-bit number")
test_suite:add_test(equal(reverse(0x5c, 8), 0x3a), "reverse 8-bit number")

test_suite:add_test(equal(reverse(0x00000000, 32), 0x00000000), "reverse 32-bit number")
test_suite:add_test(equal(reverse(0x00000001, 32), 0x80000000), "reverse 32-bit number")
test_suite:add_test(equal(reverse(0x80000000, 32), 0x00000001), "reverse 32-bit number")
test_suite:add_test(equal(reverse(0xffffffff, 32), 0xffffffff), "reverse 32-bit number")
test_suite:add_test(equal(reverse(0x22221234, 32), 0x2c484444), "reverse 32-bit number")

return _ENV