cqget

#!/bin/sh
# CQ Unix Toolkit
# Copyright (C) 2021 Wunderman Thompson Technology
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
_usage() {
    cat <<EOT
Usage: $(basename "${0}") [OPTION...] URL
Download specified file or resource using full URL specification. Normally
filename is taken from URL. File is created in current directory. You can force
this behavior using -o option.

Examples:
  cqget -u admin http://localhost:5410/etc/packages/pack.zip
                                 # Get package named pack.zip from CQ on stdout
  cqget -u admin -o PACK.zip http://localhost:5410/etc/packages/pack.zip
                                 # Get package named pack.zip and save it to
                                 # file named: PACK.zip

Options:

  -u                    use specified usernamed for connection
  -p                    use provided password for authentication
  -o                    saves remote resource using provided path or file name


EOT
    exit 1
}

CWD=$(dirname "${0}")
API="${CWD}/cqapi"
"${API}" -P >/dev/null
if [ ${?} -ne 0 ]; then
    echo "Fatal: cannot find or test cqapi command" >&2
    exit 1
fi

CURLBIN=$("${API}" -c)
if [ ${?} -ne 0 ]; then
    echo "Fatal: cannot find curl" >&2
    exit 1
fi

# API common options
cmdapi=$("${API}" -P "${@}")
username=$(echo "${cmdapi}" | cut -f1)
password=$(echo "${cmdapi}" | cut -f2)
apigetopts=$(echo "${cmdapi}" | cut -f5)

# Custom arguments
while getopts ":o:${apigetopts}" opt; do
    case "${opt}" in
    o)
        outfile="${OPTARG}"
        ;;
    \?)
        echo "Invalid option: -${OPTARG}" >&2
        _usage
        ;;
    :)
        echo "Option -${OPTARG} requires an argument." >&2
        _usage
        ;;
    esac
done
shift $((OPTIND - 1))

if [ ${#} -ne 1 ]; then
    _usage
fi
URL=${1}
REFERER="${URL}"
AUTH="${username}:${password}"
REFERERHEADER="Referer: ${REFERER}"

if [ -z "${outfile}" ]; then
    outfile=$(basename "${URL}")
fi

STATUS=$(${CURLBIN} \
    -s \
    --write-out "%{http_code}" \
    -u "${AUTH}" \
    -H "${REFERERHEADER}" \
    -f \
    -o "${outfile}" \
    "${URL}")

EXITCODE=${?}
"${API}" -C ${EXITCODE}

STATUSCODE=$(echo "${STATUS}" | tail -n 1)
"${API}" -H "${STATUSCODE}"

EXITCODE2=${?}
if [ ${EXITCODE} -eq 0 -a ${EXITCODE} -eq 0 ]; then
    if [ ! -z "${outfile}" ]; then
        fullfile=$(readlink -f "${outfile}")
        echo "Resource copied to: '${fullfile}'"
    fi
fi

exit $((EXITCODE + EXITCODE2))