scripts/xssh at master · fbnmtz/scripts · GitHub

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#!/usr/bin/env bash
#
# ############################################################################
# Project: scripts (none)
# File...: xssh
# Created: Thursday, 2025/01/23 - 18:02:34
# Author.: fbnmtz, (fabiano.matoz@gmail.com)
# ~·~·~·~·~·~·~·~·~·~·~·~·~~·~·~·~·~·~·~·~·~·~·~·~·~~·~·~·~·~·~~·~·~·~·~·~·~·~
# Last Modified: Thursday, 2026/08/20 - 16:59:13
# Modified By..: @fbnmtz, (fabiano.matoz@gmail.com)
# ~·~·~·~·~·~·~·~·~·~·~·~·~~·~·~·~·~·~·~·~·~·~·~·~·~~·~·~·~·~·~~·~·~·~·~·~·~·~
# Version: 1.0.4.173
# ~·~·~·~·~·~·~·~·~·~·~·~·~~·~·~·~·~·~·~·~·~·~·~·~·~~·~·~·~·~·~~·~·~·~·~·~·~·~
# Description:
#  >
# ############################################################################
# HISTORY:
#

source "$xSHELL_INIT"
# xs_init
xs_use args colors
xs_require ssh ssh-keyscan ssh-keygen cut mbat

xarg --id -u,--user     --var user+r --desc "login with <user>"
xarg --id -H,--host     --var host+r --desc "<host> to connect "
xarg --id -k,--known                 --desc "show ssh known hosts"
xarg --id -r,--remove   --var host+r --desc "remove <host> form known_hosts"
xarg --id -g,--generate --var mail+r,filename+r --desc "generate a new ssh-key"
xarg --id -s,--size     --var size+r --desc "define password <size>"
xarg --footer "   * script files stored on '$APP_HOME'"

xrun --xrequire-one --xversionrc --xapp-data "$@"

__known(){ mbat ~/.ssh/known_hosts; exit 0; }
__remove(){ ssh-keygen -R \"$host\" -f ~/.ssh/known_hosts; exit 0; }
__generate(){
    # needed tools
    xs_require cat tr fold head date

    # no size? set default value
    [ -z "$size" ] && size=45

    # current date
    now=$(date "+%A-%Y%m%d-%H%M%S")

    # generate a random password
    _PASS=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9*@$.!\#' | fold -w "$size" | head -n 1)

    # set filename's
    key_file_name="$APP_HOME/$filename---gen-$now-t-ed25519-ssh-key"
    key_file_pass="$APP_HOME/$filename---gen-$now-t-ed25519-ssh-pass"

    # save password backup file
    echo -n "$_PASS" > "$key_file_pass"

    # gen ssh key
    ssh-keygen -t ed25519 -C "$mail" -N "$_PASS" -f "$key_file_name"

    # show key to user
    mbat "$key_file_name"

    exit 0;
}

xcase k __known
xcase r __remove
xcase g __generate

# Extrai o usuário e o IP do parâmetro
USER_IP=$1

if [ -n "$user" ] && [ -n "$host" ]; then
    ssh_cmd="ssh $user@$host"
    IP=$host
else
    IP=$(echo "$USER_IP" | cut -d'@' -f2)
    ssh_cmd="ssh $USER_IP"
fi

# Verifica se o host está online e adiciona o IP ao known_hosts
if ssh-keyscan -H "$IP" >> ~/.ssh/known_hosts; then
    # Conecta via SSH
    $ssh_cmd

    # Remove o IP do known_hosts após encerrar a conexão SSH
    ssh-keygen -R "$IP"
else
    echo -e "${BGRED} Error! Host $IP unreachable. ${RESET}" >&2
    exit 2
fi