155 lines
5.1 KiB
Bash
155 lines
5.1 KiB
Bash
#!/usr/bin/env bash
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# ------------------------------------------------------------------------------
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# Copyright (c) 2013-2026 Geoffray Levasseur <fatalerrors@geoffray-levasseur.org>
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# Protected by the BSD3 license. Please read bellow for details.
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#
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# * Redistribution and use in source and binary forms,
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# * with or without modification, are permitted provided
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# * that the following conditions are met:
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# *
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# * Redistributions of source code must retain the above
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# * copyright notice, this list of conditions and the
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# * following disclaimer.
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# *
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# * Redistributions in binary form must reproduce the above
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# * copyright notice, this list of conditions and the following
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# * disclaimer in the documentation and/or other materials
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# * provided with the distribution.
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# *
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# * Neither the name of the copyright holder nor the names
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# * of any other contributors may be used to endorse or
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# * promote products derived from this software without
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# * specific prior written permission.
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# *
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# * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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# * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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# * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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# * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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# * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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# * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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# * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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# * OF SUCH DAMAGE.
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# ------------------------------------------------------------------------------
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# ------------------------------------------------------------------------------
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# Remove host from know_host (name and IP) for the active user
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# Usage: rmhost <hostname|ip> [hostname2|ip2 [...]]
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rmhost()
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{
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local PARSED
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PARSED=$(getopt -o h --long help -n 'rmhost' -- "$@")
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if [[ $? -ne 0 ]]; then return 1; fi
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eval set -- "$PARSED"
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while true; do
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case "$1" in
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-h|--help)
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printf "rmhost: Remove host/IP from ~/.ssh/known_hosts.\n\n"
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printf "Usage: rmhost <hostname|ip> [hostname2|ip2 ...]\n\n"
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printf "Options:\n"
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printf " -h, --help Display this help screen\n"
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return 0
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;;
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--)
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shift
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break
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;;
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*)
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disp E "Invalid options, use \"rmhost --help\" to display usage."
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return 1
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;;
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esac
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done
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[[ $# -eq 0 ]] && {
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disp E "Missing argument. Use 'rmhost --help' for usage."
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return 1
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}
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command -v ssh-keygen >/dev/null 2>&1 || {
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disp E "ssh-keygen is not installed."
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return 127
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}
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for target in "$@"; do
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local hst="$target"
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local ip=""
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local v4=1
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local v6=1
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isipv4 "$hst" >/dev/null 2>&1; v4=$?
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isipv6 "$hst" >/dev/null 2>&1; v6=$?
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if [[ $v4 -eq 0 || $v6 -eq 0 ]]; then
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ip="$hst"
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hst=""
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fi
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if [[ -z ${ip:-} && -n ${hst:-} ]]; then
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if command -v host >/dev/null 2>&1; then
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ip=$(host "$hst" 2>/dev/null | awk '/has address/ {print $NF; exit}')
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[[ -z ${ip:-} ]] && \
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disp W "Could not resolve IP for '$hst'; removing hostname only."
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else
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disp W "'host' is not installed; removing hostname only for '$hst'."
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fi
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fi
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if [[ -n ${hst:-} ]]; then
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disp I "Removing host $hst from ssh known_hosts..."
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ssh-keygen -R "$hst" >/dev/null
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fi
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if [[ -n ${ip:-} ]]; then
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disp I "Removing IP $ip from ssh known_hosts..."
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ssh-keygen -R "$ip" >/dev/null
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fi
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done
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}
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export -f rmhost
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# ------------------------------------------------------------------------------
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# ------------------------------------------------------------------------------
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# Login root via SSH on the given machine
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# Usage: ssr <server [ssh options]>
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ssr()
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{
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case "${1:-}" in
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-h|--help)
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printf "ssr: SSH into a server as root.\n\n"
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printf "Usage: ssr <server> [ssh_options...]\n\n"
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printf "Notes:\n"
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printf " The first argument is the target server.\n"
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printf " All remaining arguments are passed directly to ssh.\n\n"
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printf "Examples:\n"
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printf " ssr srv01\n"
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printf " ssr srv01 -p 2222\n"
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printf " ssr srv01 -i ~/.ssh/id_ed25519 -J bastion\n"
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return 0
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;;
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esac
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command -v ssh >/dev/null 2>&1 || {
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disp E "ssh is not installed."
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return 127
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}
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[[ $# -eq 0 || -z ${1:-} ]] && {
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disp E "Please specify the server you want to log in."
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return 1
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}
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local srv=$1
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shift
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ssh -Y root@"$srv" "$@"
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}
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export -f ssr
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# ------------------------------------------------------------------------------
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# EOF
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