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Create setup_ssh.sh
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‎Linux/setup_ssh.sh‎

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#!/usr/bin/env bash
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#----------------------------------------------------------------------------#
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#Usage: bash <(curl -qfsSL "https://raw.githubusercontent.com/pkgforgde/devscripts/main/misc/Linux/setup_ssh.sh")
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#Force: curl -qfsSL "https://raw.githubusercontent.com/pkgforgde/devscripts/main/misc/Linux/setup_ssh.sh" | bash -s -- -f
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#----------------------------------------------------------------------------#
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#----------------------------------------------------------------------------#
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# For debug
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#set -x
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#A bit of Styling
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RED='\033[31m'
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GREEN='\033[32m'
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DGREEN='\033[38;5;28m'
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GREY='\033[37m'
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BLUE='\033[34m'
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YELLOW='\033[33m'
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PURPLE='\033[35m'
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PINK='\033[38;5;206m'
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VIOLET='\033[0;35m'
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RESET='\033[0m'
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NC='\033[0m'
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#----------------------------------------------------------------------------#
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#----------------------------------------------------------------------------#
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#ENV:VARS
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export BINARY_ROOT_DIR="/usr/local/bin"
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export BINARY_HOME_DIR="${HOME}/bin"
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sudo mkdir -p "${BINARY_ROOT_DIR}" || mkdir -p "${BINARY_HOME_DIR}"
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#----------------------------------------------------------------------------#
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#----------------------------------------------------------------------------#
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# Parse command line arguments
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#def
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force_setup=
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#if
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while [[ $# -gt 0 ]]; do
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key="$1"
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case $key in
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-f|--force)
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force_setup=1
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shift
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;;
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esac
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done
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#----------------------------------------------------------------------------#
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#Auxiliaries
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#scp
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install_scp()
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{
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sudo curl -qfsSL "https://bin.pkgforge.dev/$(uname -m)/scp" -o "${BINARY_ROOT_DIR}/scp" ||\
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curl -qfsSL "https://bin.pkgforge.dev/$(uname -m)/scp" -o "${BINARY_HOME_DIR}/ssh"
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sudo chmod +xwr "${BINARY_ROOT_DIR}/scp" || chmod +xwr "${BINARY_HOME_DIR}/scp"
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}
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export -f install_scp
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if ! command -v scp >/dev/null 2>&1; then
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echo -e "\n [+]${DGREEN}Installing ${PURPLE}scp${NC}\n"
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install_scp
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elif [ -n "${force_setup}" ] ; then
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echo -e "\n [+]${PINK}Force ${DGREEN}Installing ${PURPLE}scp${NC}\n"
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install_scp
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fi
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#sftp
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install_sftp()
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{
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sudo curl -qfsSL "https://bin.pkgforge.dev/$(uname -m)/sftp" -o "${BINARY_ROOT_DIR}/sftp" ||\
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curl -qfsSL "https://bin.pkgforge.dev/$(uname -m)/sftp" -o "${BINARY_HOME_DIR}/sftp"
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sudo chmod +xwr "${BINARY_ROOT_DIR}/sftp" || chmod +xwr "${BINARY_HOME_DIR}/sftp"
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}
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export -f install_sftp
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if ! command -v sftp >/dev/null 2>&1; then
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echo -e "\n [+]${DGREEN}Installing ${PURPLE}sftp${NC}\n"
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install_sftp
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elif [ -n "${force_setup}" ] ; then
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echo -e "\n [+]${PINK}Force ${DGREEN}Installing ${PURPLE}sftp${NC}\n"
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install_sftp
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fi
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#SSH
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install_ssh()
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{
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sudo curl -qfsSL "https://bin.pkgforge.dev/$(uname -m)/ssh" -o "${BINARY_ROOT_DIR}/ssh" ||\
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curl -qfsSL "https://bin.pkgforge.dev/$(uname -m)/ssh" -o "${BINARY_HOME_DIR}/ssh"
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sudo chmod +xwr "${BINARY_ROOT_DIR}/ssh" || chmod +xwr "${BINARY_HOME_DIR}/ssh"
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}
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export -f install_ssh
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if ! command -v ssh >/dev/null 2>&1; then
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echo -e "\n [+]${DGREEN}Installing ${PURPLE}ssh${NC}\n"
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install_ssh
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elif [ -n "${force_setup}" ] ; then
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echo -e "\n [+]${PINK}Force ${DGREEN}Installing ${PURPLE}ssh${NC}\n"
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#Remove old
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sudo rm "$(which ssh)" 2>/dev/null ; sudo rm "$(which ssh)" 2>/dev/null
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install_ssh
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fi
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#ssh-keyscan
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install_ssh_keyscan()
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{
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sudo curl -qfsSL "https://bin.pkgforge.dev/$(uname -m)/ssh-keyscan" -o "${BINARY_ROOT_DIR}/ssh-keyscan" ||\
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curl -qfsSL "https://bin.pkgforge.dev/$(uname -m)/ssh-keyscan" -o "${BINARY_HOME_DIR}/ssh-keyscan"
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sudo chmod +xwr "${BINARY_ROOT_DIR}/ssh-keyscan" || chmod +xwr "${BINARY_HOME_DIR}/ssh-keyscan"
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}
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export -f install_ssh_keyscan
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if ! command -v ssh-keyscan >/dev/null 2>&1; then
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echo -e "\n [+]${DGREEN}Installing ${PURPLE}ssh-keyscan${NC}\n"
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install_ssh_keyscan
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elif [ -n "${force_setup}" ] ; then
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echo -e "\n [+]${PINK}Force ${DGREEN}Installing ${PURPLE}ssh-keyscan${NC}\n"
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install_ssh_keyscan
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fi
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#----------------------------------------------------------------------------#
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#----------------------------------------------------------------------------#
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#Get Config
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sudo mkdir -p "/etc/ssh/" || mkdir -p "${HOME}/.ssh"
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sudo curl -qfsSL "https://raw.githubusercontent.com/pkgforge/devscripts/refs/heads/main/Linux/sshd_config_passwordless" -o "/etc/ssh/sshd_config" ||\
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curl -qfsSL "https://raw.githubusercontent.com/pkgforge/devscripts/refs/heads/main/Linux/sshd_config_passwordless" -o "${HOME}/.ssh/sshd_config"
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#Enable X11Forwarding
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sudo sed -e 's/^X11Forwarding no/X11Forwarding yes/' -i "/etc/ssh/sshd_config" ||\
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sed -e 's/^X11Forwarding no/X11Forwarding yes/' -i "${HOME}/.ssh/sshd_config"
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##PasswordAuthentication yes
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# sudo sed -e '/^#PasswordAuthentication/s/^#//' -i "/etc/ssh/sshd_config" || sed -e '/^#PasswordAuthentication/s/^#//' -i "${HOME}/.ssh/sshd_config"
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#----------------------------------------------------------------------------#
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#----------------------------------------------------------------------------#
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#ssh-keygen
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create_host_keys()
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{
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sudo curl -qfsSL "https://bin.pkgforge.dev/$(uname -m)/ssh-keygen" -o "${BINARY_ROOT_DIR}/ssh-keygen" ||\
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curl -qfsSL "https://bin.pkgforge.dev/$(uname -m)/ssh-keygen" -o "${BINARY_HOME_DIR}/ssh-keygen"
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sudo chmod +xwr "${BINARY_ROOT_DIR}/ssh-keygen" || chmod +xwr "${BINARY_HOME_DIR}/ssh-keygen"
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#Generate-Keys
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# dsa
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echo "yes" | sudo ssh-keygen -N "" -t dsa -f "/etc/ssh/ssh_host_dsa_key" ||\
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echo "yes" | ssh-keygen -N "" -t dsa -f "${HOME}/.ssh/ssh_host_dsa_key"
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# ecdsa
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echo "yes" | sudo ssh-keygen -N "" -t ecdsa -b 521 -f "/etc/ssh/ssh_host_ecdsa_key" ||\
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echo "yes" | ssh-keygen -N "" -t ecdsa -b 521 -f "${HOME}/.ssh/ssh_host_ecdsa_key"
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# ed25519
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echo "yes" | sudo ssh-keygen -N "" -t ed25519 -f "/etc/ssh/ssh_host_ed25519_key" ||\
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echo "yes" | ssh-keygen -N "" -t ed25519 -f "${HOME}/.ssh/ssh_host_ed25519_key"
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# creates id_rsa (ssh_host_rsa_key) & id_rsa.pub (ssh_host_rsa_key.pub)
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echo "yes" | sudo ssh-keygen -N "" -t rsa -b 4096 -f "/etc/ssh/ssh_host_rsa_key" ||\
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echo "yes" | ssh-keygen -N "" -t rsa -b 4096 -f "${HOME}/.ssh/ssh_host_rsa_key"
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}
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export -f create_host_keys
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if ! command -v ssh-keygen >/dev/null 2>&1; then
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echo -e "\n [+]${DGREEN}Installing ${PURPLE}ssh-keygen${NC}\n"
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create_host_keys
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elif [ -n "${force_setup}" ] ; then
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echo -e "\n [+]${PINK}Force ${DGREEN}Installing ${PURPLE}ssh-keygen${NC}\n"
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create_host_keys
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fi
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#----------------------------------------------------------------------------#
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#----------------------------------------------------------------------------#
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#sshd
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install_sshd(){
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#Install
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sudo curl -qfsSL "https://bin.pkgforge.dev/$(uname -m)/sshd" -o "${BINARY_ROOT_DIR}/sshd" ||\
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curl -qfsSL "https://bin.pkgforge.dev/$(uname -m)/sshd" -o "${BINARY_HOME_DIR}/sshd"
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sudo chmod +xwr "${BINARY_ROOT_DIR}/sshd" || chmod +xwr "${BINARY_HOME_DIR}/sshd"
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#Symlink
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sudo ln -s "/usr/local/bin/ssh" "/usr/bin/ssh" 2>/dev/null ; sudo ln -s "/usr/local/bin/sshd" "/usr/bin/sshd" 2>/dev/null
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}
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export -f install_sshd
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if ! command -v sshd >/dev/null 2>&1; then
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echo -e "\n [+]${DGREEN}Installing ${PURPLE}sshd${NC}\n"
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install_sshd
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elif [ -n "${force_setup}" ] ; then
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echo -e "\n [+]${PINK}Force ${DGREEN}Installing ${PURPLE}sshd${NC}\n"
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#Remove old
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sudo rm "$(which sshd)" 2>/dev/null ; sudo rm "$(which sshd)" 2>/dev/null
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install_sshd
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fi
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#----------------------------------------------------------------------------#
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# Ref: https://linux.die.net/man/8/sshd
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# -4 --> Forces sshd to use IPv4 addresses only.
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# -6 --> Forces sshd to use IPv6 addresses only.
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# -D --> Doesn't detach to become a daemon
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# -d --> debug mode
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# -f --> $PATH_TO_sshd_config [ Default: /etc/ssh/sshd_config ]
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# -h --> $PATH_TO_host_key_file [ Default: /etc/ssh/ssh_host_key | /etc/ssh/ssh_host_rsa_key | /etc/ssh/ssh_host_dsa_key ]
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# -o --> Directly specify config, formatted as sshd config file format
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# -q --> Quiet Mode,, no logs
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#Only needed for root
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sudo mkdir -p "/var/empty" 2>/dev/null
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#Start
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sudo "$(which sshd)" -f "/etc/ssh/sshd_config" -h "/etc/ssh/ssh_host_rsa_key" -p "22" ||\
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"$(which sshd)" -f "${HOME}/.ssh/sshd_config" -h "${HOME}/.ssh/ssh_host_rsa_key" -p "22"
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#Echo
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echo -e "\n [+] ${BLUE}SSHD${NC}\n"
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ps -aux | grep -i "sshd"
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pgrep -f "sshd"
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#Kill
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# sudo pgrep -f "sshd" | xargs sudo kill -9 2>/dev/null
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#----------------------------------------------------------------------------#
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#EOF
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#----------------------------------------------------------------------------#

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