50 lines
1.1 KiB
Bash
50 lines
1.1 KiB
Bash
|
#!/bin/sh
|
||
|
|
# env
|
||
|
|
# Written in 2019 by Lucas
|
||
|
|
# CC0 1.0 Universal/Public domain - No rights reserved
|
||
|
|
#
|
||
|
|
# To the extent possible under law, the author(s) have dedicated all
|
||
|
|
# copyright and related and neighboring rights to this software to the
|
||
|
|
# public domain worldwide. This software is distributed without any
|
||
|
|
# warranty. You should have received a copy of the CC0 Public Domain
|
||
|
|
# Dedication along with this software. If not, see
|
||
|
|
# <http://creativecommons.org/publicdomain/zero/1.0/>.
|
||
|
|
|
||
|
|
usage() {
|
||
|
|
printf "Usage: %s [-T] rfc-number\n" "${0##*/}" >&2
|
||
|
|
exit 1
|
||
|
|
}
|
||
|
|
|
||
|
|
tonumber() {
|
||
|
|
printf "%u" "$1" 2>/dev/null
|
||
|
|
}
|
||
|
|
|
||
|
|
: ${RFCDIR:=~/doc/rfc}
|
||
|
|
|
||
|
|
torsocks=torsocks
|
||
|
|
while getopts T flag; do
|
||
|
|
case $flag in
|
||
|
|
T) torsocks=
|
||
|
|
;;
|
||
|
|
*) usage
|
||
|
|
;;
|
||
|
|
esac
|
||
|
|
done
|
||
|
|
shift $(($OPTIND - 1))
|
||
|
|
|
||
|
|
if [ $# -ne 1 ] || [ -z "$1" ] || ! n=$(tonumber "$1"); then
|
||
|
|
usage
|
||
|
|
fi
|
||
|
|
rfcfile=$RFCDIR/rfc$n.txt
|
||
|
|
url=https://tools.ietf.org/rfc/rfc$n.txt
|
||
|
|
|
||
|
|
mkdir -p "$RFCDIR"
|
||
|
|
if [ ! -f "$rfcfile" ]; then
|
||
|
|
if ! $torsocks ftp -Vo "$rfcfile" "$url"; then
|
||
|
|
printf "%s: Couldn't fetch RFC %u\n" "${0##*/}" "$n" >&2
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
|
||
|
|
${PAGER:-more} "$rfcfile"
|