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fix(authentication): make cookie name unique between environments (#2091
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-------------------------------------------------------------------------------- | ||
-- https://github.com/aiq/basexx/releases/tag/v0.4.1 | ||
-- util functions | ||
-------------------------------------------------------------------------------- | ||
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local function divide_string( str, max ) | ||
local result = {} | ||
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local start = 1 | ||
for i = 1, #str do | ||
if i % max == 0 then | ||
table.insert( result, str:sub( start, i ) ) | ||
start = i + 1 | ||
elseif i == #str then | ||
table.insert( result, str:sub( start, i ) ) | ||
end | ||
end | ||
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return result | ||
end | ||
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local function number_to_bit( num, length ) | ||
local bits = {} | ||
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while num > 0 do | ||
local rest = math.floor( math.fmod( num, 2 ) ) | ||
table.insert( bits, rest ) | ||
num = ( num - rest ) / 2 | ||
end | ||
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while #bits < length do | ||
table.insert( bits, "0" ) | ||
end | ||
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return string.reverse( table.concat( bits ) ) | ||
end | ||
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local function ignore_set( str, set ) | ||
if set then | ||
str = str:gsub( "["..set.."]", "" ) | ||
end | ||
return str | ||
end | ||
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local function pure_from_bit( str ) | ||
return ( str:gsub( '........', function ( cc ) | ||
return string.char( tonumber( cc, 2 ) ) | ||
end ) ) | ||
end | ||
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local function unexpected_char_error( str, pos ) | ||
local c = string.sub( str, pos, pos ) | ||
return string.format( "unexpected character at position %d: '%s'", pos, c ) | ||
end | ||
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-------------------------------------------------------------------------------- | ||
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local basexx = {} | ||
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-------------------------------------------------------------------------------- | ||
-- base2(bitfield) decode and encode function | ||
-------------------------------------------------------------------------------- | ||
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local bitMap = { o = "0", i = "1", l = "1" } | ||
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function basexx.from_bit( str, ignore ) | ||
str = ignore_set( str, ignore ) | ||
str = string.lower( str ) | ||
str = str:gsub( '[ilo]', function( c ) return bitMap[ c ] end ) | ||
local pos = string.find( str, "[^01]" ) | ||
if pos then return nil, unexpected_char_error( str, pos ) end | ||
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return pure_from_bit( str ) | ||
end | ||
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function basexx.to_bit( str ) | ||
return ( str:gsub( '.', function ( c ) | ||
local byte = string.byte( c ) | ||
local bits = {} | ||
for _ = 1,8 do | ||
table.insert( bits, byte % 2 ) | ||
byte = math.floor( byte / 2 ) | ||
end | ||
return table.concat( bits ):reverse() | ||
end ) ) | ||
end | ||
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-------------------------------------------------------------------------------- | ||
-- base16(hex) decode and encode function | ||
-------------------------------------------------------------------------------- | ||
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function basexx.from_hex( str, ignore ) | ||
str = ignore_set( str, ignore ) | ||
local pos = string.find( str, "[^%x]" ) | ||
if pos then return nil, unexpected_char_error( str, pos ) end | ||
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return ( str:gsub( '..', function ( cc ) | ||
return string.char( tonumber( cc, 16 ) ) | ||
end ) ) | ||
end | ||
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function basexx.to_hex( str ) | ||
return ( str:gsub( '.', function ( c ) | ||
return string.format('%02X', string.byte( c ) ) | ||
end ) ) | ||
end | ||
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-------------------------------------------------------------------------------- | ||
-- generic function to decode and encode base32/base64 | ||
-------------------------------------------------------------------------------- | ||
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local function from_basexx( str, alphabet, bits ) | ||
local result = {} | ||
for i = 1, #str do | ||
local c = string.sub( str, i, i ) | ||
if c ~= '=' then | ||
local index = string.find( alphabet, c, 1, true ) | ||
if not index then | ||
return nil, unexpected_char_error( str, i ) | ||
end | ||
table.insert( result, number_to_bit( index - 1, bits ) ) | ||
end | ||
end | ||
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local value = table.concat( result ) | ||
local pad = #value % 8 | ||
return pure_from_bit( string.sub( value, 1, #value - pad ) ) | ||
end | ||
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local function to_basexx( str, alphabet, bits, pad ) | ||
local bitString = basexx.to_bit( str ) | ||
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local chunks = divide_string( bitString, bits ) | ||
local result = {} | ||
for _,value in ipairs( chunks ) do | ||
if ( #value < bits ) then | ||
value = value .. string.rep( '0', bits - #value ) | ||
end | ||
local pos = tonumber( value, 2 ) + 1 | ||
table.insert( result, alphabet:sub( pos, pos ) ) | ||
end | ||
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table.insert( result, pad ) | ||
return table.concat( result ) | ||
end | ||
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-------------------------------------------------------------------------------- | ||
-- rfc 3548: http://www.rfc-editor.org/rfc/rfc3548.txt | ||
-------------------------------------------------------------------------------- | ||
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local base32Alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567" | ||
local base32PadMap = { "", "======", "====", "===", "=" } | ||
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function basexx.from_base32( str, ignore ) | ||
str = ignore_set( str, ignore ) | ||
return from_basexx( string.upper( str ), base32Alphabet, 5 ) | ||
end | ||
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function basexx.to_base32( str ) | ||
return to_basexx( str, base32Alphabet, 5, base32PadMap[ #str % 5 + 1 ] ) | ||
end | ||
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-------------------------------------------------------------------------------- | ||
-- crockford: http://www.crockford.com/wrmg/base32.html | ||
-------------------------------------------------------------------------------- | ||
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local crockfordAlphabet = "0123456789ABCDEFGHJKMNPQRSTVWXYZ" | ||
local crockfordMap = { O = "0", I = "1", L = "1" } | ||
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function basexx.from_crockford( str, ignore ) | ||
str = ignore_set( str, ignore ) | ||
str = string.upper( str ) | ||
str = str:gsub( '[ILOU]', function( c ) return crockfordMap[ c ] end ) | ||
return from_basexx( str, crockfordAlphabet, 5 ) | ||
end | ||
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function basexx.to_crockford( str ) | ||
return to_basexx( str, crockfordAlphabet, 5, "" ) | ||
end | ||
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-------------------------------------------------------------------------------- | ||
-- base64 decode and encode function | ||
-------------------------------------------------------------------------------- | ||
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local base64Alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ".. | ||
"abcdefghijklmnopqrstuvwxyz".. | ||
"0123456789+/" | ||
local base64PadMap = { "", "==", "=" } | ||
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function basexx.from_base64( str, ignore ) | ||
str = ignore_set( str, ignore ) | ||
return from_basexx( str, base64Alphabet, 6 ) | ||
end | ||
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function basexx.to_base64( str ) | ||
return to_basexx( str, base64Alphabet, 6, base64PadMap[ #str % 3 + 1 ] ) | ||
end | ||
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-------------------------------------------------------------------------------- | ||
-- URL safe base64 decode and encode function | ||
-------------------------------------------------------------------------------- | ||
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local url64Alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ".. | ||
"abcdefghijklmnopqrstuvwxyz".. | ||
"0123456789-_" | ||
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function basexx.from_url64( str, ignore ) | ||
str = ignore_set( str, ignore ) | ||
return from_basexx( str, url64Alphabet, 6 ) | ||
end | ||
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function basexx.to_url64( str ) | ||
return to_basexx( str, url64Alphabet, 6, "" ) | ||
end | ||
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-------------------------------------------------------------------------------- | ||
-- | ||
-------------------------------------------------------------------------------- | ||
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local function length_error( len, d ) | ||
return string.format( "invalid length: %d - must be a multiple of %d", len, d ) | ||
end | ||
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local z85Decoder = { 0x00, 0x44, 0x00, 0x54, 0x53, 0x52, 0x48, 0x00, | ||
0x4B, 0x4C, 0x46, 0x41, 0x00, 0x3F, 0x3E, 0x45, | ||
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, | ||
0x08, 0x09, 0x40, 0x00, 0x49, 0x42, 0x4A, 0x47, | ||
0x51, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, | ||
0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30, 0x31, 0x32, | ||
0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, | ||
0x3B, 0x3C, 0x3D, 0x4D, 0x00, 0x4E, 0x43, 0x00, | ||
0x00, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, | ||
0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, | ||
0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, | ||
0x21, 0x22, 0x23, 0x4F, 0x00, 0x50, 0x00, 0x00 } | ||
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function basexx.from_z85( str, ignore ) | ||
str = ignore_set( str, ignore ) | ||
if ( #str % 5 ) ~= 0 then | ||
return nil, length_error( #str, 5 ) | ||
end | ||
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local result = {} | ||
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local value = 0 | ||
for i = 1, #str do | ||
local index = string.byte( str, i ) - 31 | ||
if index < 1 or index >= #z85Decoder then | ||
return nil, unexpected_char_error( str, i ) | ||
end | ||
value = ( value * 85 ) + z85Decoder[ index ] | ||
if ( i % 5 ) == 0 then | ||
local divisor = 256 * 256 * 256 | ||
while divisor ~= 0 do | ||
local b = math.floor( value / divisor ) % 256 | ||
table.insert( result, string.char( b ) ) | ||
divisor = math.floor( divisor / 256 ) | ||
end | ||
value = 0 | ||
end | ||
end | ||
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return table.concat( result ) | ||
end | ||
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local z85Encoder = "0123456789".. | ||
"abcdefghijklmnopqrstuvwxyz".. | ||
"ABCDEFGHIJKLMNOPQRSTUVWXYZ".. | ||
".-:+=^!/*?&<>()[]{}@%$#" | ||
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function basexx.to_z85( str ) | ||
if ( #str % 4 ) ~= 0 then | ||
return nil, length_error( #str, 4 ) | ||
end | ||
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local result = {} | ||
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local value = 0 | ||
for i = 1, #str do | ||
local b = string.byte( str, i ) | ||
value = ( value * 256 ) + b | ||
if ( i % 4 ) == 0 then | ||
local divisor = 85 * 85 * 85 * 85 | ||
while divisor ~= 0 do | ||
local index = ( math.floor( value / divisor ) % 85 ) + 1 | ||
table.insert( result, z85Encoder:sub( index, index ) ) | ||
divisor = math.floor( divisor / 85 ) | ||
end | ||
value = 0 | ||
end | ||
end | ||
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return table.concat( result ) | ||
end | ||
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-------------------------------------------------------------------------------- | ||
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return basexx |
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