/* Copyright © 2005-2007  Roger Leigh <rleigh@debian.org>
 *
 * schroot is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * schroot is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see
 * <http://www.gnu.org/licenses/>.
 *
 *********************************************************************/

#include <config.h>

#include "dchroot-session.h"

#include <cassert>
#include <cerrno>
#include <cstdlib>
#include <cstring>
#include <iostream>
#include <memory>

#include <unistd.h>

#include <syslog.h>

#include <boost/format.hpp>

using std::cout;
using std::endl;
using sbuild::_;
using sbuild::auth;
using boost::format;
using namespace dchroot;

session::session (std::string const&         service,
		  config_ptr&                config,
		  operation                  operation,
		  sbuild::string_list const& chroots,
		  bool                       compat):
  session_base(service, config, operation, chroots, compat)
{
}

session::~session ()
{
}

sbuild::auth::status
session::get_chroot_auth_status (sbuild::auth::status status,
				 sbuild::chroot::ptr const& chroot) const
{
  if (get_compat() == true)
    status = auth::change_auth(status, auth::STATUS_NONE);
  else
    status = auth::change_auth(status,
			       sbuild::session::get_chroot_auth_status(status,
								       chroot));

  return status;
}

sbuild::string_list
session::get_login_directories () const
{
  sbuild::string_list ret;

  std::string const& wd(get_auth()->get_wd());
  if (!wd.empty())
    {
      // Set specified working directory.
      ret.push_back(wd);
    }
  else
    {
      // Set current working directory only if preserving environment.
      // Only change to home if not preserving the environment.
      if (!get_auth()->get_environment().empty())
	ret.push_back(this->sbuild::session::cwd);
      else
	ret.push_back(get_auth()->get_home());

      // Final fallback to root.
      if (std::find(ret.begin(), ret.end(), "/") == ret.end())
	ret.push_back("/");
    }

  return ret;
}

void
session::get_user_command (sbuild::chroot::ptr& session_chroot,
			   std::string&         file,
			   sbuild::string_list& command) const
{
  std::string programstring = sbuild::string_list_to_string(command, " ");

  command.clear();
  command.push_back(get_shell());
  command.push_back("-c");
  command.push_back(programstring);

  file = command[0];

  sbuild::log_debug(sbuild::DEBUG_NOTICE) << "file=" << file << endl;

  std::string commandstring = sbuild::string_list_to_string(command, " ");
  sbuild::log_debug(sbuild::DEBUG_NOTICE)
    << format("Running command: %1%") % commandstring << endl;
  if (get_auth()->get_uid() == 0 ||
      get_auth()->get_ruid() != get_auth()->get_uid())
    syslog(LOG_USER|LOG_NOTICE, "[%s chroot] (%s->%s) Running command: \"%s\"",
	   session_chroot->get_name().c_str(),
	   get_auth()->get_ruser().c_str(),
	   get_auth()->get_user().c_str(),
	   commandstring.c_str());

  if (get_auth()->get_verbosity() != auth::VERBOSITY_QUIET)
    {
      std::string format_string;
      // TRANSLATORS: %1% = chroot name
      // TRANSLATORS: %2% = command
      format_string = (_("[%1% chroot] Running command: \"%2%\""));

      format fmt(format_string);
      fmt % session_chroot->get_name()
	% programstring;
      sbuild::log_info() << fmt << endl;
    }
}