Refactor token generator, and use crypto for numerics

This commit is contained in:
Shane Kilkelly 2017-10-26 16:01:53 +01:00
parent d2a17c2745
commit 18443b55cb

View file

@ -12,19 +12,33 @@ module.exports = ProjectTokenGenerator =
# a y), and lower case "l" is omitted, because in many fonts it is
# indistinguishable from an upper case "I" (and sometimes even the number 1).
TOKEN_ALPHA: 'bcdfghjkmnpqrstvwxyz'
TOKEN_NUMERICS: '123456789'
_randomString: (length, alphabet) ->
result = ''
crypto.randomBytes(length).map(
(b) -> result += alphabet[b % alphabet.length]
)
return result
# Generate a 12-char token with only characters from TOKEN_ALPHA,
# suitable for use as a read-only token for a project
readOnlyToken: () ->
length = 12
tokenAlpha = ProjectTokenGenerator.TOKEN_ALPHA
result = ''
crypto.randomBytes(length).map( (a) -> result += tokenAlpha[a % tokenAlpha.length] )
return result
return ProjectTokenGenerator._randomString(
12,
ProjectTokenGenerator.TOKEN_ALPHA
)
# Generate a longer token, with a numeric prefix,
# suitable for use as a read-and-write token for a project
readAndWriteToken: () ->
numerics = Math.random().toString().slice(2, 12)
token = ProjectTokenGenerator.readOnlyToken()
return "#{numerics}#{token}"
numerics = ProjectTokenGenerator._randomString(
10,
ProjectTokenGenerator.TOKEN_NUMERICS
)
token = ProjectTokenGenerator._randomString(
12,
ProjectTokenGenerator.TOKEN_ALPHA
)
fullToken = "#{numerics}#{token}"
return fullToken