76 lines
1.6 KiB
Bash
76 lines
1.6 KiB
Bash
#!/bin/sh
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# fetch
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# Written in 2019-2022 by Lucas
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# CC0 1.0 Universal/Public domain - No rights reserved
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#
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# To the extent possible under law, the author(s) have dedicated all
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# copyright and related and neighboring rights to this software to the
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# public domain worldwide. This software is distributed without any
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# warranty. You should have received a copy of the CC0 Public Domain
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# Dedication along with this software. If not, see
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# <http://creativecommons.org/publicdomain/zero/1.0/>.
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usage()
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{
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printf "Usage: %s [-T] URL [URL ...]\n" "${0##*/}" >&2
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exit 1
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}
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fetch_cmd()
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{
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# ftp(1) is chatty if stdin is a terminal. It prints its operations to
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# stdout if "-o output" is used. In that case, we'll need to redirect
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# stdout to the tty we're being called from, in order to be able to
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# pipe the output to another command.
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if tty=$(tty) && [ X"$tty" != X"not a tty" ]; then
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$torsocks ftp "$@" >"$tty"
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else
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$torsocks ftp "$@"
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fi
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}
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torsocks=torsocks
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while getopts T flag; do
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case $flag in
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T) torsocks=
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;;
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*) usage
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;;
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esac
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done
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shift $((OPTIND - 1))
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[ $# -gt 0 ] || usage
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: ${ARCHIVE_BASEDIR:=~/tmp/archive}
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mkdir -p "$ARCHIVE_BASEDIR"
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rc=0
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for url; do
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sha=$(sha256 -qs "$url")
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t=$sha
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h0=${t%${t#??}}
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t=${t#??}
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h1=${t%${t#??}}
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t=${t#??}
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ht=$t
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outdir=$ARCHIVE_BASEDIR/$h0/$h1/$ht
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if [ -f "$outdir/file" ]; then
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printf "%s: already fetched %s\n" "${0##*/}" "$url" >&2
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printf "%s\n" "$outdir/file"
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continue
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fi
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mkdir -p "$outdir"
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{
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fetch_cmd -o "$outdir/file" "$url" &&
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printf "%s=%s\n" \
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url "$url" date "$(date +%Y-%m-%d)" >"$outdir/meta" &&
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printf "%s\n" "$outdir/file"
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} || rc=1
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done
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exit $rc
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