buildroot/support/download/curl
Yann E. MORIN afece24a72 support/download: introduce curl backend for FTP transfers
Recent versions of wget, starting with wget 2.0, aka wget2 thereafter,
no longer support FTP (nor FTPS, aka FTP-over-SSL). wget2 is packaged in
Fedora 40, recently released; F40 does not even have the old wget
available in its repository anymore.

Introduce cURL as a download backend, that we use for FTP and FPTS
protocols.

Note that the -q flag does not means being quiet; it means that a curlrc
file should not be parsed. The long option is --disable, which meaning
is not much more obivous than the short -q. It also has to be the first
option on the command line.

Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2024-07-12 13:12:55 +02:00

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#!/usr/bin/env bash
# We want to catch any unexpected failure, and exit immediately
set -e
# Download helper for curl, to be called from the download wrapper script
#
# Options:
# -q Be quiet.
# -o FILE Save into file FILE.
# -f FILENAME The filename of the tarball to get at URL
# -u URL Download file at URL.
#
# Environment:
# CURL : the curl command to call
quiet=
while getopts "${BR_BACKEND_DL_GETOPTS}" OPT; do
case "${OPT}" in
q) quiet=-s;;
o) output="${OPTARG}";;
f) filename="${OPTARG}";;
u) url="${OPTARG}";;
:) printf "option '%s' expects a mandatory argument\n" "${OPTARG}"; exit 1;;
\?) printf "unknown option '%s'\n" "${OPTARG}" >&2; exit 1;;
esac
done
shift $((OPTIND-1)) # Get rid of our options
# Caller needs to single-quote its arguments to prevent them from
# being expanded a second time (in case there are spaces in them)
_curl() {
if [ -z "${quiet}" ]; then
printf '%s ' "${CURL}" "${@}"; printf '\n'
fi
_plain_curl "$@"
}
# Note: please keep command below aligned with what is printed above
_plain_curl() {
# shellcheck disable=SC2086 # We want splitting
eval ${CURL} "${@}"
}
_curl ${quiet} "${@}" --output "'${output}'" "'${url}/${filename}'"