#!/usr/bin/env bash
####################################################################################################
#
# Tor Auto Installer (for Debian/Ubuntu and RedHat based systems)
#
#   Written by Someguy123 @ Privex Inc.
#
#   If this script helps you, consider buying a server from Privex!
#
#     - We accept cryptocurrency (BTC, LTC, XMR, DOGE, EOS, HIVE, HBD, and possibly more)
#     - We don't require any personal info - a name (can be an alias/username) and an e-mail 
#       is all we ask for
#     - We're Belize-based, so we're able to stand up for PRIVACY and FREEDOM OF SPEECH to the max
#     - We allow Tor EXIT nodes and relays: https://www.privex.io/tor-exit-policy
#
#   https://www.privex.io
#
# Released under X11 / MIT License
#
#########################
#
# Quickstart:
#
#     curl -fsSL https://cdn.privex.io/extras/install-tor.sh | bash
#
#########################
#
# Tor Auto Installer is a bash script which is compatible with most Debian-based and
# RedHat-based Linux distros. 
#
# It automatically downloads and installs TorProject's repository, GPG key(s), plus any 
# special dependencies (e.g. EPEL for CentOS/RHEL/Oracle).
#
# Once the repo is setup, and any required GPG keys are imported etc. - it automatically
# installs the Tor software (service + torsocks, not Tor Browser) via your distro's 
# package manager.
#
#########################
#
# Supported Linux distros:
#
#   - Ubuntu 16.04 (Xenial)
#   - Ubuntu 18.04 (Bionic)
#   - Ubuntu 20.04 (Focal)
#   - Debian 10 (Buster)
#   - Debian 9 (Jessie)
#
#   - Fedora 33 (may work with older versions)
#   - CentOS 8 (may work with older versions)
#   - Oracle Linux 8 (may work with older versions)
#   - Red Hat Enterprise Linux 8 (RHEL 8) (may work with older versions)
#
# Tested on:
#   VPS/Dedi:      Ubuntu 18.04, Ubuntu 20.04, Debian 10
#   Docker Images: Fedora 33, CentOS 8, Oracle Linux 8.3, RHEL 8
#
####################################################################################################

export PATH="${HOME}/.local/bin:/snap/bin:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/sbin:${PATH}"

: ${TOR_KEY_ID="A3C4F0F979CAA22CDBA8F512EE8CBC9E886DDD89"}
: ${TOR_KEY="https://deb.torproject.org/torproject.org/${TOR_KEY_ID}.asc"}
: ${TOR_KEY_NAME="torproject-2020.gpg"}
: ${TOR_REPO="https://deb.torproject.org/torproject.org"}
: ${CODENAME=""}
IS_DEBIAN=1
IS_REDHAT=0

TOR_CENTOS="[tor]
name=Tor for Enterprise Linux \$releasever - \$basearch
baseurl=https://rpm.torproject.org/centos/\$releasever/\$basearch
enabled=1
gpgcheck=1
gpgkey=https://rpm.torproject.org/centos/public_gpg.key
cost=100
"

TOR_FEDORA="[tor]
name=Tor for Fedora \$releasever - \$basearch
baseurl=https://rpm.torproject.org/fedora/\$releasever/\$basearch
enabled=1
gpgcheck=1
gpgkey=https://rpm.torproject.org/fedora/public_gpg.key
cost=100
"
DEB_CMD=""
RH_CMD="yum"
command -v apt-get &> /dev/null && DEB_CMD="apt-get"
command -v apt &> /dev/null && DEB_CMD="apt"
command -v dnf &> /dev/null && RH_CMD="dnf"

if [ -t 1 ]; then
    RED="$(tput setaf 1)"    GREEN="$(tput setaf 2)"    YELLOW="$(tput setaf 3)"    BLUE="$(tput setaf 4)"    BOLD="$(tput bold)"   NORMAL="$(tput sgr0)" RESET="$(tput sgr0)"
else
    RED="" GREEN="" YELLOW="" BLUE="" BOLD="" NORMAL="" RESET=""
fi

sudo() {
    if (( EUID == 0 )); then
        "$@"
        return $?
    else
        if command -v sudo &> /dev/null; then
            env sudo "$@"
            return $?
        elif command -v su &> /dev/null; then
            su -p -l -c "$*" root
            return $?
        fi
        >&2 echo "${BOLD}${RED} >>> Neither sudo nor su available - and you're not root... Cannot run: $* ${RESET}"
        >&2 echo "${BOLD}${RED} >>> Attempting to run command as current user... ${RESET}"
        "$@"
        return $?
    fi

}

if ! command -v curl &> /dev/null; then
    echo -e "\n${BOLD}${YELLOW} >>>  Command 'curl' not found. Installing it.\n${RESET}"
    if [[ -n "$DEB_CMD" ]]; then
        "$DEB_CMD" update 
        "$DEB_CMD" install -y curl wget
    else
        "$RH_CMD" install -y curl wget
    fi
fi
if ! command -v distro &> /dev/null; then
    echo -e "\n${BOLD}${YELLOW} >>>  Command 'distro' not found. Downloading from cdn.privex.io to /usr/local/bin/distro ...\n${RESET}"
    curl -fsSL https://cdn.privex.io/extras/distro.sh | sudo tee /usr/local/bin/distro
    sudo chmod +x /usr/local/bin/distro
fi

DISTRO="$(distro)"

if [[ -z "$CODENAME" ]]; then
    case "$DISTRO" in
        "Ubuntu 18.04"|"Ubuntu Bionic"|"Ubuntu 18.04 Bionic Beaver"|"bionic")
            CODENAME="bionic"
            ;;
        "Ubuntu 20.04"|"Ubuntu Focal"|"Ubuntu 20.04 Focal Fossa"|"focal")
            CODENAME="focal"
            ;;
        "Ubuntu 16.04"|"Ubuntu Xenial"|"Ubuntu 16.04 Xenial"|"xenial")
            CODENAME="xenial"
            ;;
        "Debian GNU/Linux 10"|"Debian 10"|"Debian Buster"|"Debian 10 Buster")
            CODENAME="buster"
            ;;
        "Debian GNU/Linux 9"|"Debian 9"|"Debian Jessie"|"Debian 9 Jessie")
            CODENAME="jessie"
            ;;
        *)
            if grep -Ei "oracle|centos" <<< "$DISTRO"; then
                CODENAME="centos" IS_DEBIAN=0 IS_REDHAT=1
            elif grep -i "fedora" <<< "$DISTRO"; then
                CODENAME="fedora" IS_DEBIAN=0 IS_REDHAT=1
            elif grep -Ei "redhat|red hat|rhel" <<< "$DISTRO"; then
                CODENAME="redhat" IS_DEBIAN=0 IS_REDHAT=1
            else
                if command -v yum &>/dev/null || command -v dnf &>/dev/null; then
                    echo -e "\n${BOLD}${YELLOW} >>> Unable to determine distro ... Assuming CentOS binaries will be compatible.\n${RESET}"
                    IS_DEBIAN=0 IS_REDHAT=1 CODENAME="centos"
                else
                    echo -e "\n${BOLD}${YELLOW} >>> Unable to determine distro ... Assuming Debian 10 Buster binaries will be compatible.\n${RESET}"
                    CODENAME="buster" IS_DEBIAN=1 IS_REDHAT=0
                fi
            fi
            ;;
    esac
else
    echo -e "\n${BOLD}${GREEN} >>>  Env var CODENAME set externally. Using codename: ${CODENAME}\n${RESET}"
fi
echo -e "\n${BOLD}${GREEN} >>> Using codename: ${CODENAME}\n${RESET}"

if (( IS_DEBIAN )); then
    echo -e "\n${BOLD}${GREEN} >>> Running apt update ...\n${RESET}"
    apt-get update -qy
    echo -e "\n${BOLD}${GREEN} >>> Installing apt-transport-https and software-properties-common ...\n${RESET}"
    apt-get install -qy apt-transport-https software-properties-common
    echo -e "\n${BOLD}${GREEN} >>> Downloading and importing torproject key: $TOR_KEY \n${RESET}"
    curl -fsSL "$TOR_KEY"  | gpg --import

    echo -e "\n${BOLD}${GREEN} >>> Exporting key $TOR_KEY_ID to /etc/apt/trusted.gpg.d/${TOR_KEY_NAME} \n${RESET}"
    gpg --export "$TOR_KEY_ID" | tee "/etc/apt/trusted.gpg.d/${TOR_KEY_NAME}" > /dev/null
fi


add-repo() {
    local repof="$1" repoct="$2"
    if [[ -f "$repof" ]]; then
        echo -e "\n${BOLD}${YELLOW} >>> Repo file '${repof}' already exists. Not creating repo file.\n${RESET}"
    else
        echo -e "\n${BOLD}${GREEN} >>>  Creating repo file: ${repof} \n${RESET}"

        tee -a "$repof" <<< "$repoct"
        echo
    fi
}

if [[ "$CODENAME" == "centos" || "$CODENAME" == "redhat" || "$CODENAME" == "fedora" ]]; then

    : ${TOR_REPO_FILE="/etc/yum.repos.d/tor.repo"}
    [[ "$CODENAME" == "fedora" ]] && TOR_YUMCT="$TOR_FEDORA" || TOR_YUMCT="$TOR_CENTOS"
    add-repo "$TOR_REPO_FILE" "$TOR_YUMCT"
else
    : ${TOR_REPO_FILE="/etc/apt/sources.list.d/torproject.list"}
    deb_repo_ct="deb ${TOR_REPO} ${CODENAME} main
deb-src ${TOR_REPO} ${CODENAME} main
"
    add-repo "$TOR_REPO_FILE" "$deb_repo_ct"
fi

#echo -e "\n${BOLD}${GREEN} >>>  ...\n${RESET}"

if (( IS_DEBIAN )); then
    echo -e "\n${BOLD}${GREEN} >>> Running apt update ...\n${RESET}"
    apt update -qy

    echo -e "\n${BOLD}${GREEN} >>> Installing/updating Tor and TorProject keyring... \n${RESET}"
    apt-get install -qy deb.torproject.org-keyring tor
else
    echo -e "\n${BOLD}${GREEN} [...] Using package manager command: ${RH_CMD}\n${RESET}"
    if grep -qi "oracle" <<< "$DISTRO"; then
        echo -e "\n${BOLD}${YELLOW} >>> Downloading and installing EPEL for Oracle...\n${RESET}"
        curl -fsSL https://cdn.privex.io/extras/repos/ol8-epel.repo | sudo tee -a /etc/yum.repos.d/ol8-epel.repo
        dnf makecache
        dnf install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm
        dnf makecache
    elif grep -Eqi "redhat|red hat|rhel" <<< "$DISTRO"; then
        echo -e "\n${BOLD}${YELLOW} >>> Downloading and installing EPEL for Red Hat Enterprise Linux (RHEL)...\n${RESET}"
        dnf install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm
        dnf makecache
    else
        echo -e "\n${BOLD}${GREEN} >>> Installing/updating epel-release\n${RESET}"
        "$RH_CMD" install epel-release -y
    fi
    echo -e "\n${BOLD}${GREEN} >>> Installing/updating Tor\n${RESET}"
    "$RH_CMD" install tor -y
fi
echo -e "\n${BOLD}${GREEN} [+++] FINISHED. \n${RESET}"

systemctl status tor@default.service