view mod_authz_delegate/mod_authz_delegate.lua @ 5468:14b5446e22e1

mod_http_oauth2: Fix returning errors from response handlers This would either redirect the user back to the client along with the error code, or show the error HTML template. Previously this would just show some JSON to the user.
author Kim Alvefur <zash@zash.se>
date Thu, 18 May 2023 12:57:23 +0200
parents 98d5acb93439
children
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local target_host = assert(module:get_option("authz_delegate_to"));
local this_host = module:get_host();

local array = require"util.array";
local jid_split = import("prosody.util.jid", "split");

local hosts = prosody.hosts;

function get_jids_with_role(role)  --luacheck: ignore 212/role
	return nil
end

function get_user_role(user)
	-- this is called where the JID belongs to the host this module is loaded on
	-- that means we have to delegate that to get_jid_role with an appropriately composed JID
	return hosts[target_host].authz.get_jid_role(user .. "@" .. this_host)
end

function set_user_role(user, role_name)  --luacheck: ignore 212/user 212/role_name
	-- no roles for entities on this host.
	return false, "cannot set user role on delegation target"
end

function get_user_secondary_roles(user)  --luacheck: ignore 212/user
	-- no roles for entities on this host.
	return {}
end

function add_user_secondary_role(user, role_name)  --luacheck: ignore 212/user 212/role_name
	-- no roles for entities on this host.
	return nil, "cannot set user role on delegation target"
end

function remove_user_secondary_role(user, role_name)  --luacheck: ignore 212/user 212/role_name
	-- no roles for entities on this host.
	return nil, "cannot set user role on delegation target"
end

function user_can_assume_role(user, role_name)  --luacheck: ignore 212/user 212/role_name
	-- no roles for entities on this host.
	return false
end

function get_jid_role(jid)
	local user, host = jid_split(jid);
	if host == target_host then
		return hosts[target_host].authz.get_user_role(user);
	end
	return hosts[target_host].authz.get_jid_role(jid);
end

function set_jid_role(jid)  --luacheck: ignore 212/jid
	-- TODO: figure out if there are actually legitimate uses for this...
	return nil, "cannot set jid role on delegation target"
end

local default_permission_queue = array{};

function add_default_permission(role_name, action, policy)
	-- NOTE: we always record default permissions, because the delegated-to
	-- host may be re-activated.
	default_permission_queue:push({
		role_name = role_name,
		action = action,
		policy = policy,
	});
	local target_host_object = hosts[target_host];
	local authz = target_host_object and target_host_object.authz;
	if not authz then
		module:log("debug", "queueing add_default_permission call for later, %s is not active yet", target_host);
		return;
	end
	return authz.add_default_permission(role_name, action, policy)
end

function get_role_by_name(role_name)
	return hosts[target_host].authz.get_role_by_name(role_name)
end

function get_all_roles()
	return hosts[target_host].authz.get_all_roles()
end

module:hook_global("host-activated", function(host)
	if host == target_host then
		local authz = hosts[target_host].authz;
		module:log("debug", "replaying %d queued permission changes", #default_permission_queue);
		assert(authz);
		-- replay default permission changes, if any
		for i, item in ipairs(default_permission_queue) do
			authz.add_default_permission(item.role_name, item.action, item.policy);
		end
		-- NOTE: we do not clear that array here -- in case the target_host is
		-- re-activated
	end
end, -10000)