-- This script may be used with the auth-filter. Be sure to configure it as you wish.
--
-- Requirements:
-- luacrypto >= 0.3
--
--
--
--
-- Configure these variables for your settings.
--
--
-- A list of password protected repositories along with the users who can access them.
local protected_repos = {
glouglou = { laurent = true, jason = true },
qt = { jason = true, bob = true }
}
-- Please note that, in production, you'll want to replace this simple lookup
-- table with either a table of salted and hashed passwords (using something
-- smart like scrypt), or replace this table lookup with an external support,
-- such as consulting your system's pam / shadow system, or an external
-- database, or an external validating web service. For testing, or for
-- extremely low-security usage, you may be able, however, to get away with
-- compromising on hardcoding the passwords in cleartext, as we have done here.
local users = {
jason = "secretpassword",
laurent = "s3cr3t",
bob = "ilikelua"
}
-- All cookies will be authenticated based on this secret. Make it something
-- totally random and impossible to guess. It should be large.
local secret = "BE SURE TO CUSTOMIZE THIS STRING TO SOMETHING BIG AND RANDOM"
--
--
-- Authentication functions follow below. Swap these out if you want different authentication semantics.
--
--
-- Sets HTTP cookie headers based on post and sets up redirection.
function authenticate_post()
local password = users[post["username"]]
local redirect = validate_value("redirect", post["redirect"])
if redirect == nil then
not_found()
return 0
end
redirect_to(redirect)
-- Lua hashes strings, so these comparisons are time invariant.
if password == nil or password ~= post["password"] then
set_cookie("cgitauth", "")
else
-- One week expiration time
local username = secure_value("username", post["username"], os.time() + 604800)
set_cookie("cgitauth", username)
end
html("\n")
return 0
end
-- Returns 1 if the cookie is valid and 0 if it is not.
function authenticate_cookie()
accepted_users = protected_repos[cgit["repo"]]
if accepted_users == nil then
-- We return as valid if the repo is not protected.
return 1
end
local username = validate_value("username", get_cookie(http["cookie"], "cgitauth"))
if username == nil or not accepted_users[username:lower()] then
return 0
else
return 1
end
end
-- Prints the html for the login form.
function body()
html("Authentication Required
")
html("")
return 0
end
--
--
-- Wrapper around filter API, exposing the http table, the cgit table, and the post table to the above functions.
--
--
local actions = {}
actions["authenticate-post"] = authenticate_post
actions["authenticate-cookie"] = authenticate_cookie
actions["body"] = body
function filter_open(...)
action = actions[select(1, ...)]
http = {}
http["cookie"] = select(2, ...)
http["method"] = select(3, ...)
http["query"] = select(4, ...)
http["referer"] = select(5, ...)
http["path"] = select(6, ...)
http["host"] = select(7, ...)
http["https"] = select(8, ...)
cgit = {}
cgit["repo"] = select(9, ...)
cgit["page"] = select(10, ...)
cgit["url"] = select(11, ...)
cgit["login"] = select(12, ...)
end
function filter_close()
return action()
end
function filter_write(str)
post = parse_qs(str)
end
--
--
-- Utility functions based on keplerproject/wsapi.
--
--
function url_decode(str)
if not str then
return ""
end
str = string.gsub(str, "+", " ")
str = string.gsub(str, "%%(%x%x)", function(h) return string.char(tonumber(h, 16)) end)
str = string.gsub(str, "\r\n", "\n")
return str
end
function url_encode(str)
if not str then