73 lines
1.7 KiB
Plaintext
73 lines
1.7 KiB
Plaintext
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#!/bin/bash
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# -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
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source "$(dirname "$0")/lib/ulib/ulib" || exit 1
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urequire DEFAULTS
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function display_help() {
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uecho "$scriptname: afficher les connexions TCP entrantes sur un port
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USAGE
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$scriptname [options] port
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OPTIONS
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-4, --only-tcp
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-6, --only-tcp6
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Se limiter au protocole spécifié. Par défaut, afficher toutes les
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connexions, qu'elles soient en IPv4 ou en IPv6
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-a, --all
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Afficher tous les sockets, y compris les ports d'écoute. Par défaut,
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seules les sockets ouvertes sont affichées.
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-n, --numeric
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Afficher uniquement les adresses IP au lieu du nom d'hôte."
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}
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function filter_proto() {
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case "$1" in
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tcp) awk '$1 == "tcp" { print }';;
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tcp6) awk '$1 == "tcp6" { print }';;
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*) cat;;
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esac
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}
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function filter_port() {
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awkrun port="$1" '$4 ~ (".*:" port "$") { print }'
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}
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function print_conn() {
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awk '{ client = $5; sub(/:[^:]+$/, "", client); print client " " $6 }'
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}
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function print_host() {
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local -a hosts
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if [ -n "$*" ]; then
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while read ip state; do
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resolv_hosts hosts "$ip"
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echo "${hosts:-$ip}" "$state"
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done
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else
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cat
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fi
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}
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proto=
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all=
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resolve=1
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parse_opts "${PRETTYOPTS[@]}" \
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--help '$exit_with display_help' \
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-4,--only-tcp proto=tcp \
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-6,--only-tcp6 proto=tcp6 \
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-a,--all all=1 \
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-n,--numeric resolve= \
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@ args -- "$@" && set -- "${args[@]}" || die "$args"
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port="$1"
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[ -n "$port" ] || die "Vous devez spécifier un port"
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LANG=C netstat -tn ${all:+-a} |
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filter_proto "$proto" |
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filter_port "$port" |
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print_conn |
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csort -u |
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print_host $resolve |
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"$scriptdir/umatch" -c -F ""
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