#!/bin/sh

# Show all commands when run with environment variable VERBOSE=yes.

test -z "$VERBOSE" || set -x

test "$USE_ACL" = 0 &&

  {

    echo "Skipping test: insufficient ACL support"

    exit 77

  }

# func_tmpdir

# creates a temporary directory.

# Sets variable

# - tmp             pathname of freshly created temporary directory

func_tmpdir ()

{

  # Use the environment variable TMPDIR, falling back to /tmp. This allows

  # users to specify a different temporary directory, for example, if their

  # /tmp is filled up or too small.

  : ${TMPDIR=/tmp}

  {

    # Use the mktemp program if available. If not available, hide the error

    # message.

    tmp=`(umask 077 && mktemp -d "$TMPDIR/glXXXXXX") 2>/dev/null` &&

    test -n "$tmp" && test -d "$tmp"

  } ||

  {

    # Use a simple mkdir command. It is guaranteed to fail if the directory

    # already exists.  $RANDOM is bash specific and expands to empty in shells

    # other than bash, ksh and zsh.  Its use does not increase security;

    # rather, it minimizes the probability of failure in a very cluttered /tmp

    # directory.

    tmp=$TMPDIR/gl$$-$RANDOM

    (umask 077 && mkdir "$tmp")

  } ||

  {

    echo "$0: cannot create a temporary directory in $TMPDIR" >&2

    exit 1

  }

}

func_tmpdir

builddir=`pwd`

cd "$builddir" ||

  {

    echo "$0: cannot determine build directory (unreadable parent dir?)" >&2

    exit 1

  }

# Switch to a temporary directory, to increase the likelihood that ACLs are

# supported on the current file system. (/tmp is usually locally mounted,

# whereas the build dir is sometimes NFS-mounted.)

( cd "$tmp"

  # Prepare tmpfile0.

  rm -f tmpfile[0-9]

  echo "Simple contents" > tmpfile0

  chmod 600 tmpfile0

  # Classification of the platform according to the programs available for

  # manipulating ACLs.

  # Possible values are:

  #   linux, cygwin, freebsd, solaris, hpux, hpuxjfs, osf1, aix, macosx, irix, none.

  # TODO: Support also native Windows platforms (mingw).

  acl_flavor=none

  if (getfacl tmpfile0 >/dev/null) 2>/dev/null; then

    # Platforms with the getfacl and setfacl programs.

    # Linux, FreeBSD, Solaris, Cygwin.

    if (setfacl --help >/dev/null) 2>/dev/null; then

      # Linux, Cygwin.

      if (LC_ALL=C setfacl --help | grep ' --set-file' >/dev/null) 2>/dev/null; then

        # Linux.

        acl_flavor=linux

      else

        acl_flavor=cygwin

      fi

    else

      # FreeBSD, Solaris.

      if (LC_ALL=C setfacl 2>&1 | grep '\-x entries' >/dev/null) 2>/dev/null; then

        # FreeBSD.

        acl_flavor=freebsd

      else

        # Solaris.

        acl_flavor=solaris

      fi

    fi

  else

    if (lsacl / >/dev/null) 2>/dev/null; then

      # Platforms with the lsacl and chacl programs.

      # HP-UX, sometimes also IRIX.

      if (getacl tmpfile0 >/dev/null) 2>/dev/null; then

        # HP-UX 11.11 or newer.

        acl_flavor=hpuxjfs

      else

        # HP-UX 11.00.

        acl_flavor=hpux

      fi

    else

      if (getacl tmpfile0 >/dev/null) 2>/dev/null; then

        # Tru64, NonStop Kernel.

        if (getacl -m tmpfile0 >/dev/null) 2>/dev/null; then

          # Tru64.

          acl_flavor=osf1

        else

          # NonStop Kernel.

          acl_flavor=nsk

        fi

      else

        if (aclget tmpfile0 >/dev/null) 2>/dev/null; then

          # AIX.

          acl_flavor=aix

        else

          if (fsaclctl -v >/dev/null) 2>/dev/null; then

            # Mac OS X.

            acl_flavor=macosx

          else

            if test -f /sbin/chacl; then

              # IRIX.

              acl_flavor=irix

            fi

          fi

        fi

      fi

    fi

  fi

  if test $acl_flavor != none; then

    # A POSIX compliant 'id' program.

    if test -f /usr/xpg4/bin/id; then

      ID=/usr/xpg4/bin/id

    else

      ID=id

    fi

    # Use a user and group id different from the current one, to avoid

    # redundant/ambiguous ACLs.

    myuid=`$ID -u`

    mygid=`$ID -g`

    auid=1

    if test "$auid" = "$myuid"; then auid=2; fi

    agid=1

    if test "$agid" = "$mygid"; then agid=2; fi

  fi

  for mode in 700 400 200 100 644 650 605 011 4700 2070; do

    rm -f tmpfile0 tmpfile1 tmpfile2

    # Prepare a file with no ACL.

    echo "Anything" > tmpfile0

    # If a mode is not supported (e.g. 2070 on FreeBSD), we skip testing it.

    if chmod $mode tmpfile0 2>/dev/null; then

      modestring0=`ls -l tmpfile0 | dd ibs=1 count=10 2>/dev/null`

      # Prepare a file with no ACL.

      echo "Some contents" > tmpfile1

      chmod 600 tmpfile1

      # Try to set the ACL to only the given mode.

      "$builddir"/test-set-mode-acl${EXEEXT} tmpfile1 $mode

      # Verify that tmpfile1 has no ACL and has the desired mode.

      modestring=`ls -l tmpfile1 | dd ibs=1 count=10 2>/dev/null`

      if test "x$modestring" != "x$modestring0"; then

        echo "mode = $mode: tmpfile1 has wrong mode: $modestring" 1>&2

        exit 1

      fi

      if test `"$builddir"/test-file-has-acl${EXEEXT} tmpfile1` != no; then

        echo "mode = $mode: tmpfile1 got an ACL" 1>&2

        exit 1

      fi

      if test $acl_flavor != none; then

        # Prepare a file with an ACL.

        echo "Special contents" > tmpfile2

        chmod 600 tmpfile2

        # Set an ACL for a user (or group).

        case $acl_flavor in

          linux | freebsd | solaris)

            setfacl -m user:$auid:1 tmpfile0

            ;;

          cygwin)

            setfacl -m group:0:1 tmpfile0

            ;;

          hpux)

            orig=`lsacl tmpfile0 | sed -e 's/ tmpfile0$//'`

            chacl -r "${orig}($auid.%,--x)" tmpfile0

            ;;

          hpuxjfs)

            orig=`lsacl tmpfile0 | sed -e 's/ tmpfile0$//'`

            chacl -r "${orig}($auid.%,--x)" tmpfile0 \

              || setacl -m user:$auid:1 tmpfile0

            ;;

          osf1)

            setacl -u user:$auid:1 tmpfile0

            ;;

          nsk)

            setacl -m user:$auid:1 tmpfile0

            ;;

          aix)

            { aclget tmpfile0 | sed -e 's/disabled$/enabled/'; echo "        permit --x u:$auid"; } | aclput tmpfile0

            ;;

          macosx)

            /bin/chmod +a "user:daemon allow execute" tmpfile0

            ;;

          irix)

            /sbin/chacl user::rw-,group::---,other::---,user:$auid:--x tmpfile0

            ;;

        esac

        # Try to set the ACL to only the given mode.

        "$builddir"/test-set-mode-acl${EXEEXT} tmpfile2 $mode

        # Verify that tmpfile2 has no ACL and has the desired mode.

        modestring=`ls -l tmpfile2 | dd ibs=1 count=10 2>/dev/null`

        if test "x$modestring" != "x$modestring0"; then

          echo "mode = $mode: tmpfile2 has wrong mode: $modestring" 1>&2

          exit 1

        fi

        if test `"$builddir"/test-file-has-acl${EXEEXT} tmpfile2` != no; then

          echo "mode = $mode: tmpfile2 still has an ACL" 1>&2

          exit 1

        fi

      fi

    fi

  done

  rm -f tmpfile[0-9]

) || exit 1

rm -rf "$tmp"

exit 0