Webserver called from inetd - no permanently running daemons
author Neil Franklin, last modification 2004.04.07

all portwait, fork(), IP binding, port selection, daemon $UID setting by identd
  dito all resource limit stuff, user ip filtering
started on each HTTP connection, so fast startup, no config files
  all config by looking at the file system, files and permissions
    or possibly by command line options, from inetd.conf
  dito no config changes by .htaccess files, as no parser for these
$SERVERROOT set to home of $UID user
  webmaster admin address is mail address of this user
for /~$USER URL $SERVERROOT set to home of $USER
virtualhosts by looking for special directories
  vhost-IP/$IP, vhost-port/$PORT and vhost-name/$NAME
  each sets $SERVERROOT then to the appropriate directory, before next test
$DOCUMENTROOT fixed at the resulting $SERVERROOT/htdocs (not public_html)
  follow symlink if it is one, so that other placement is possible
  if "dir" is a symlink with http:// in it, then return "redirect"
  if no $SERVERROOT/htdocs then return "no pages" error
for $PATH/$FILENAME deliver that file
  all access controls via normal file permissions, for world and $UID|$GID
  if file has execute bit set, then execute file as cgi-like script
    no need for extra cgi directories, is xbit hack mode
    to prevend data clashes use an SUID wrapper to switch to file owners $UID
      missing wrapper program disables scripting feature
    for user authentification also SUID wrapper and re-call deamon
      for this use the normal /etc/passed and similar accounts
  if missing file, then translate language to file name expansion
    if still missing return .notfound* file, or built in error message
  if file is a symlink, then follow it and use referenced file
  if file is a symlink with http:// in it, then return "redirect"
  if file is a symlink with nothing in it, then return "gone"
for $PATH/ deliver an index* file, if one can be found
  else make an directory listing, if directory is readable
    directory index pure text, no icons, no need for files with these
$LOGROOT fixed at the resulting $SERVERROOT/logs
  follow symlink if it is one, so that $DOCUMENTROOT/logs is possible
  do the log types for which there is an writable file in $LOGROOT
    log formats fixed or config by command line option, such as IP vs hostname