check.exec

#!/bin/bash
#
# Copyright (c) 2017, SingularityWare, LLC. All rights reserved.
# Copyright (c) 2017, Vanessa Sochat. All rights reserved.
#
# See the COPYRIGHT.md file at the top-level directory of this distribution and at
# https://github.com/singularityware/singularity/blob/master/COPYRIGHT.md.
#
# This file is part of the Singularity Linux container project. It is subject to the license
# terms in the LICENSE.md file found in the top-level directory of this distribution and
# at https://github.com/singularityware/singularity/blob/master/LICENSE.md. No part
# of Singularity, including this file, may be copied, modified, propagated, or distributed
# except according to the terms contained in the LICENSE.md file.


## Basic sanity
if [ -z "$SINGULARITY_libexecdir" ]; then
    echo "Could not identify the Singularity libexecdir."
    exit 1
fi

## Load functions
if [ -f "$SINGULARITY_libexecdir/singularity/functions" ]; then
    . "$SINGULARITY_libexecdir/singularity/functions"
else
    echo "Error loading functions: $SINGULARITY_libexecdir/singularity/functions"
    exit 1
fi

# If no arguments
# default SINGULARITY_CHECKLEVEL is highest (3)
# define check tags to be default

SINGULARITY_CHECKLEVEL=3  # LOW
SINGULARITY_CHECKTAGS="default"

while true; do
    case ${1:-} in
        -h|--help|help)
            exec "$SINGULARITY_libexecdir/singularity/cli/help.exec" "$SINGULARITY_COMMAND"
        ;;
        -l|--low)                          # levels 3,2,1
            SINGULARITY_CHECKLEVEL=3       # LOW
            shift;
        ;;
        -m|--med|--medium)                 # levels 2,1
            SINGULARITY_CHECKLEVEL=2       # MED
            shift;
        ;;
        --high)
            SINGULARITY_CHECKLEVEL=1      # level 1 only
            shift;                        # HIGH
        ;;
        -t|--tag)
            shift;
            SINGULARITY_CHECKTAGS="${1:-}"         
            echo $SINGULARITY_CHECKTAGS
            shift;
        ;;
        -*)
            message ERROR "Unknown option: ${1:-}\n"
            exit 1
        ;;
        *)
            break
        ;;
    esac
done


if [ -f "$SINGULARITY_libexecdir/singularity/cli/$SINGULARITY_COMMAND.info" ]; then
    . "$SINGULARITY_libexecdir/singularity/cli/$SINGULARITY_COMMAND.info"
else
    message ERROR "Could not find the info file for: $SINGULARITY_COMMAND\n"
    ABORT 255
fi

if [ -z "${1:-}" ]; then
    if [ -n "${USAGE:-}" ]; then
        echo "USAGE: $USAGE"
    else
        echo "To see usage summary type: singularity help $SINGULARITY_COMMAND"
    fi
    exit 0
fi


RETVAL=0
SINGULARITY_IMAGE="${1:-}"

# We will inspect the image by mounting it, and this should also work for
# bootstrap since we will have the SINGULARITY_ROOTFS

SINGULARITY_MOUNTPOINT=`mktemp -d /tmp/.singularity-check.XXXXXXXX`
export SINGULARITY_IMAGE SINGULARITY_MOUNTPOINT SINGULARITY_CHECKLEVEL SINGULARITY_CHECKTAGS
shift


if [ -z "${SINGULARITY_NOSUID:-}" -a -u "$SINGULARITY_libexecdir/singularity/bin/mount-suid" ]; then
    eval "$SINGULARITY_libexecdir/singularity/bin/mount-suid" /bin/bash "$SINGULARITY_libexecdir/singularity/helpers/check.sh"
    RETVAL=$?
elif [ -x "$SINGULARITY_libexecdir/singularity/bin/mount" ]; then
    eval "$SINGULARITY_libexecdir/singularity/bin/mount" /bin/bash "$SINGULARITY_libexecdir/singularity/helpers/check.sh"
    RETVAL=$?
else
    message ERROR "Could not locate the Singularity binary: $SINGULARITY_libexecdir/singularity/bin/mount\n"
    exit 1
fi

rmdir "$SINGULARITY_MOUNTPOINT"

exit $RETVAL