#!/bin/bash

eval "$(env SHELL=/bin/bash "$(athdir /mit/barnowl bin)/barnowl-perl-config")"

# Does this do anything? At least newer PARs use PAR_TMPDIR and don't read
# PAR_GLOBAL_TMPDIR.
if [ -n "$ATHENA_SESSION_TMPDIR" ]; then
    PAR_GLOBAL_TMPDIR=$ATHENA_SESSION_TMPDIR
    export PAR_GLOBAL_TMPDIR
fi
if [ -z "$BARNOWL_REAL" ]; then
    BARNOWL_REAL=barnowl.real
fi

# PAR 1.003 made the requirements on /tmp/par-$USER stricter without changing
# the name. Hack around this by setting PAR_TMPDIR (despite what the
# documentation says, PAR_GLOBAL_TMPDIR doesn't seem used anywhere) if
# /tmp/par-$USER exists and has bad permissions. This is so we can switch from
# old to new PAR without breaking dialups that haven't rebooted.
if ! perl -MPAR -e '1' 2>/dev/null; then
    PAR_TMPDIR=/tmp/newpar-$USER
    if [ ! -d "$PAR_TMPDIR" ]; then
        mkdir "$PAR_TMPDIR"
    fi
    export PAR_TMPDIR
fi

case "$BARNOWL_REAL" in
    /*) BARNOWL_REAL_PATH="$BARNOWL_REAL" ;;
    *) BARNOWL_REAL_PATH="$(athdir /mit/barnowl bin)/$BARNOWL_REAL" ;;
esac

# Detect zephyr name if necessary
if [ ! -x "$BARNOWL_REAL_PATH" ]; then
    SUFFIX=

    # Both Debian Lenny and Ubuntu Karmic use the _deb50
    # sysname, but they have different zephyr versions (soname
    # 3 and 4, respectively). So for that sysname, we the
    # build script includes the zephyr soname into the binary
    # name, and we pick the right one.
    if /sbin/ldconfig -p | grep -qF "libzephyr.so.4"; then
        SUFFIX=.zephyr4
    else
        SUFFIX=.zephyr3
    fi

    BARNOWL_REAL_PATH="$BARNOWL_REAL_PATH$SUFFIX"
fi

exec "$BARNOWL_REAL_PATH" "$@"