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-- @@SHEBANG
-- -*- Lua -*-
-- gitano-auth
--
-- Git (with) Augmented network operations -- User authentication wrapper
--
-- Copyright 2012-2017 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.
--
--

-- @@GITANO_LUA_PATH

local gitano = require "gitano"
local gall = require "gall"
local luxio = require "luxio"
local sio = require "luxio.simple"
local sp = require "luxio.subprocess"

-- @@GITANO_BIN_PATH
-- @@GITANO_SHARE_PATH
-- @@GITANO_I18N_PATH
-- @@GITANO_PLUGIN_PATH

local start_log_level = gitano.log.get_level()
gitano.log.cap_level(gitano.log.level.INFO)
local transactionid = gitano.log.syslog.open()

local repo_root, user, keytag = ...

gitano.config.repo_path(repo_root)

local cmdline = luxio.getenv "SSH_ORIGINAL_COMMAND" or ""

if cmdline:match("^[ \t\n]*$") then
   gitano.log.fatal(gitano.i18n.expand("ERROR_NO_COMMAND"))
end

local authorized, cmd, parsed_cmdline, config, env, repo =
   gitano.auth.is_authorized(user, "ssh", cmdline, repo_root,
                             transactionid, start_log_level, keytag)

if authorized then
   local exit, quiet = gitano.util.run_command(cmd, cmdline, parsed_cmdline,
                                               user, config, env, repo)

   if exit ~= 0 then
      if not quiet then
         gitano.log.critical(gitano.i18n.expand("ERROR_COMMAND_FAILED"))
      end
      luxio._exit(exit)
   end
else
   gitano.log.fatal(gitano.i18n.expand("ERROR_NOT_AUTHORISED"))
end

gitano.log.syslog.close()

return 0