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|
-- gitano.auth
--
-- Gitano entry point for unified authorisation/authentication
--
-- Copyright 2014 Richard Ipsum <richard.ipsum@codethink.co.uk>
-- Copyright 2016-2017 Daniel Silverstone <dsilvers@digital-scurf.org>
-- All rights reserved.
--
-- Redistribution and use in source and binary forms, with or without
-- modification, are permitted provided that the following conditions
-- are met:
-- 1. Redistributions of source code must retain the above copyright
-- notice, this list of conditions and the following disclaimer.
-- 2. Redistributions in binary form must reproduce the above copyright
-- notice, this list of conditions and the following disclaimer in the
-- documentation and/or other materials provided with the distribution.
-- 3. Neither the name of the author nor the names of their contributors
-- may be used to endorse or promote products derived from this software
-- without specific prior written permission.
--
-- THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-- ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-- ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-- FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-- OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-- HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-- LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-- OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-- SUCH DAMAGE.
--
local config = require 'gitano.config'
local command = require 'gitano.command'
local log = require 'gitano.log'
local repository = require 'gitano.repository'
local util = require 'gitano.util'
local i18n = require 'gitano.i18n'
local gall = require 'gall'
local luxio = require 'luxio'
local function load_admin_conf(repo_root)
local admin_repo = gall.repository.new((repo_root or "") ..
"/gitano-admin.git")
if not admin_repo then
log.critical(i18n.expand("ERROR_CANNOT_FIND_ADMIN_REPO"))
return nil
end
local admin_head = admin_repo:get(admin_repo.HEAD)
if not admin_head then
log.critical(i18n.expand("ERROR_BAD_ADMIN_REPO"))
return nil
end
local admin_conf, msg = config.parse(admin_head)
if not admin_conf then
log.critical(i18n.expand("ERROR_CANNOT_PARSE_ADMIN"))
log.critical(" * " .. (msg or "No error?"))
return nil
end
return admin_conf
end
local function set_environment(repo_root, repo, context, transactionid)
local env = {
["GITANO_ROOT"] = repo_root,
["GITANO_USER"] = context.user,
["GITANO_KEYTAG"] = context.keytag,
["GITANO_PROJECT"] = (repo or {}).name or "",
["GITANO_SOURCE"] = context.source,
["GITANO_TRANSACTION_ID"] = transactionid,
["GITANO_RUNNING"] = "yes",
}
for k, v in pairs(env) do
luxio.setenv(k, v)
end
return env
end
local function is_authorized(user, source, cmdline, repo_root,
transactionid, start_log_level, keytag)
local authorized = false
config.repo_path(repo_root)
if not user or not cmdline then
return nil
end
local parsed_cmdline, warnings = util.parse_cmdline(cmdline)
if (#warnings > 0) then
log.error(i18n.expand("ERROR_PARSING_COMMAND"))
return nil
end
local admin_conf = load_admin_conf(repo_root)
if admin_conf == nil then
log.fatal(i18n.expand("ERROR_COULD_NOT_LOAD_CONFIG"))
end
if admin_conf.groups["gitano-admin"].filtered_members[user] then
log.set_level(start_log_level)
end
if not admin_conf.global.silent then
log.bump_level(log.level.CHAT)
end
ip = os.getenv("REMOTE_ADDR") or "unknown ip"
log.syslog.info(
i18n.expand("CLIENT_CONNECTED",
{ ip=ip, user=user, key=keytag, cmdline=cmdline}))
local cmd = command.get(parsed_cmdline[1])
if not cmd then
log.critical(i18n.expand("ERROR_UNKNOWN_COMMAND", {cmd=parsed_cmdline[1]}))
return nil
end
local repo
if cmd.takes_repo and #parsed_cmdline >= 1 then
repo, parsed_cmdline = cmd.detect_repo(admin_conf, parsed_cmdline)
if not repo and not parsed_cmdline then
return nil
end
end
if user == "gitano-bypass" then
log.state(i18n.expand("BYPASS_USER_BANNER_HEADER"))
log.state(i18n.expand("BYPASS_USER_ALERT_MESSAGE"))
log.state(i18n.expand("BYPASS_USER_BANNER_FOOTER"))
end
if not cmd.validate(admin_conf, repo, parsed_cmdline) then
log.critical(i18n.expand("ERROR_VALIDATION_FAILED"))
return nil
end
local context = {source = source, user = user, keytag = keytag}
local action, reason = cmd.prep(admin_conf, repo, parsed_cmdline, context)
if not action then
log.critical(reason)
log.critical(i18n.expand("ERROR_RULESET_UNCLEAN"))
return nil
end
local env
if action == "allow" then
log.info(reason or i18n.expand("RULESET_ALLOWED"))
authorized = true
env = set_environment(repo_root, repo, context, transactionid)
else
log.critical(reason)
log.critical(i18n.expand("RULESET_DENIED"))
end
return authorized, cmd, parsed_cmdline, admin_conf, env, repo
end
return {
is_authorized = is_authorized
}
|
