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mod_auth_oauthbearer/mod_auth_oauthbearer.lua @ 5424:b45d9a81b3da
mod_http_oauth2: Revert role selector, going to try something else
Back out f2c7bb3af600
Allowing only a single role to be encoded into the grant takes away the
possibility of having multiple roles in the grant, one of which is
selected when issuing an access token. It also takes away the ability to
have zero roles granted, which could be useful e.g. when you only need
OIDC scopes.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Sun, 07 May 2023 19:40:57 +0200 |
parent | 3115:d2bf9c8be3a3 |
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local host = module.host; local log = module._log; local new_sasl = require "util.sasl".new; local base64 = require "util.encodings".base64.encode; local provider = {}; local oauth_client_id = module:get_option_string("oauth_client_id", ""); local oauth_client_secret = module:get_option_string("oauth_client_secret", ""); local oauth_url = module:get_option_string("oauth_url", ""); if oauth_client_id == "" then error("oauth_client_id required") end if oauth_client_secret == "" then error("oauth_client_secret required") end if oauth_url == "" then error("oauth_url required") end -- globals required by socket.http if rawget(_G, "PROXY") == nil then rawset(_G, "PROXY", false) end if rawget(_G, "base_parsed") == nil then rawset(_G, "base_parsed", false) end local function interp(s, tab) -- String interpolation, so that we can make the oauth_url configurable -- e.g. oauth_url = "https://api.github.com/applications/{{oauth_client_id}}/tokens/{{password}}"; -- -- See: http://lua-users.org/wiki/StringInterpolation return (s:gsub('(%b{})', function(w) return tab[w:sub(3, -3)] or w end)) end function provider.test_password(username, password, realm) log("debug", "Testing signed OAuth2 for user %s at realm %s", username, realm); local https = require "ssl.https"; local url = interp(oauth_url, {oauth_client_id = oauth_client_id, password = password}); module:log("debug", "The URL is: "..url); local _, code, headers, status = https.request{ url = url, headers = { Authorization = "Basic "..base64(oauth_client_id..":"..oauth_client_secret); } }; if type(code) == "number" and code >= 200 and code <= 299 then module:log("debug", "OAuth provider confirmed valid password"); return true; else module:log("debug", "OAuth provider returned status code: "..code); end module:log("warn", "Auth failed. Invalid username/password or misconfiguration."); return nil; end function provider.users() return function() return nil; end end function provider.set_password(username, password) return nil, "Changing passwords not supported"; end function provider.user_exists(username) return true; end function provider.create_user(username, password) return nil, "User creation not supported"; end function provider.delete_user(username) return nil , "User deletion not supported"; end function provider.get_sasl_handler() local supported_mechanisms = {}; supported_mechanisms["OAUTHBEARER"] = true; return new_sasl(host, { oauthbearer = function(sasl, username, password, realm) return provider.test_password(username, password, realm), true; end, mechanisms = supported_mechanisms }); end module:provides("auth", provider);