init

README.md

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+# SConnect
+Saluco Connect
+
+## Installing sconnect
+local: `SC_SRC=. bin/sc -h local install`  
+remote (when installed locally): `sc -h <remote> install`

assets/saluco-header.txt

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+            _                 
+  ___  __ _| |_   _  ___ ___  
+ / __|/ _` | | | | |/ __/ _ \ 
+ \__ \ (_| | | |_| | (_| (_) |
+ |___/\__,_|_|\__,_|\___\___/ 
+

bin/sc

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+#!/bin/sh
+
+SC_COMMAND="$0 $@"
+SC_SRC=${SC_SRC:-/opt/sconnect}
+. $SC_SRC/lib/setup-env
+
+SC_HOSTS=""
+
+while getopts "h:" opt; do
+    case $opt in
+    h)
+        SC_HOSTS="$SC_HOSTS $OPTARG"
+        ;;
+    esac
+done
+shift $((OPTIND - 1))
+
+([ $# -lt 1 ] || [ -z "$1" ]) && fatal_log "usage: $0 [...args] <command>"
+command=$1
+shift
+
+for host in $SC_HOSTS; do
+    case $command in
+    install)
+        if [ "$host" = "local" ]; then
+            escalate_command cp -r $SC_SRC/. /opt/sconnect
+            escalate_command install -m a+rx -o root /opt/sconnect/bin/sc /usr/bin
+            escalate_command install -m a+rx -o root /opt/sconnect/bin/sc-client /usr/bin
+        else
+            LOGI "attempting to install on $host..."
+            rsync -au $SC_SRC/. $host:/opt/sconnect
+            ssh $host SC_SKIP_WELCOME_HEADER=1 /opt/sconnect/bin/sc-client lib privileges escalate_command install -m a+rx -o root /opt/sconnect/bin/sc /usr/bin
+            ssh $host SC_SKIP_WELCOME_HEADER=1 /opt/sconnect/bin/sc-client lib privileges escalate_command install -m a+rx -o root /opt/sconnect/bin/sc-client /usr/bin
+            LOGI "installed"
+        fi
+        ;;
+    *)
+        if [ "$host" = "local" ]; then
+            $SC_SRC/bin/sc-client $@
+        else
+            ssh -t $host SC_SKIP_WELCOME_HEADER=1 /opt/sconnect/bin/sc-client check 2>/dev/null || fatal_log not installed
+            ssh -t $host /opt/sconnect/bin/sc-client $command $@
+        fi
+        ;;
+    esac
+done

bin/sc-client

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+#!/bin/sh
+
+SC_COMMAND="$0 $@"
+SC_SRC=${SC_SRC:-/opt/sconnect}
+. $SC_SRC/lib/setup-env
+
+show_welcome_header
+
+[ $# -lt 1 ] && fatal_log "usage: $0 <command>"
+command=$1
+shift
+
+case $command in
+update)
+    LOGI attempting to update system...
+    escalate lib pm upgrade_packages
+    ;;
+run)
+    if [ -z "$@" ]; then
+        if command -v zsh >/dev/null; then
+            zsh
+        elif command -v bash >/dev/null; then
+            bash
+        else
+            sh
+        fi
+    else
+        $@
+    fi
+
+    ;;
+lib)
+    [ $# -lt 2 ] && fatal_log "usage: $0 lib <library> <command>"
+    . $SC_LIB/$1
+    shift
+    $@
+    ;;
+check)
+    exit 0
+;;
+*)
+    fatal_log "invalid command"
+    ;;
+esac

lib/headers

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+#!/bin/sh
+
+show_welcome_header() {
+    [ "$SC_SKIP_WELCOME_HEADER" = "1" ] && return 0
+    cat $SC_ASSETS/saluco-header.txt
+    echo "Welcome, $(whoami) ($(id -u))!"
+    echo ""
+}

lib/logger

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+#!/bin/sh
+
+__sc_log() {
+    level=$1; shift
+    echo "[$level] $@"
+}
+
+alias LOGD="__sc_log debug"
+alias LOGI="__sc_log info"
+alias LOGW="__sc_log warn"
+alias LOGE="__sc_log error"
+
+fatal_log() {
+    __sc_log fatal $@
+    exit 1
+}

lib/manipulation

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+#!/bin/sh
+
+get_first_in_list() {
+    echo $1
+}

lib/pm

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+#!/bin/sh
+
+# sc.requires: logger
+
+detect_package_manager() {
+    if command -v apt > /dev/null; then
+        echo apt
+    elif command -v pacman > /dev/null; then
+        echo arch
+    elif command -v dnf > /dev/null; then
+        echo dnf
+    elif command -v yum > /dev/null; then
+        echo yum
+    elif command -v zypper > /dev/null; then
+        echo zypper
+    elif command -v brew > /dev/null; then
+        echo brew
+    elif command -v apk > /dev/null; then
+        echo apk
+    elif command -v nix-env > /dev/null; then
+        echo nix
+    else
+        fatal_log "no supported package manager found"
+        exit 1
+    fi
+}
+
+SC_PACKAGE_MANAGER="${SC_PACKAGE_MANAGER:-$(detect_package_manager)}"
+
+upgrade_packages() {
+    case $SC_PACKAGE_MANAGER in
+        apt) apt update && apt upgrade -y ;;
+        arch) pacman -Syyu --noconfirm ;;
+        dnf) dnf upgrade -y ;;
+        yum) yum update -y ;;
+        zypper) zypper refresh && zypper update -y ;;
+        brew) brew update && brew upgrade ;;
+        apk) apk update && apk upgrade ;;
+        nix) nix-channel --update && nix-env -u ;;
+        *)
+            fatal_log "unsupported package manager: $SC_PACKAGE_MANAGER"
+            exit 1
+            ;;
+    esac
+}
+
+install_package() {
+    [ $# -lt 1 ] && fatal_log "usage: install_package <package>" && exit 1
+    package=$1
+    case $SC_PACKAGE_MANAGER in
+        apt) apt install -y "$package" ;;
+        arch) pacman -S --noconfirm "$package" ;;
+        dnf) dnf install -y "$package" ;;
+        yum) yum install -y "$package" ;;
+        zypper) zypper install -y "$package" ;;
+        brew) brew install "$package" ;;
+        apk) apk add "$package" ;;
+        nix) nix-env -iA nixpkgs."$package" ;;
+        *)
+            fatal_log "unsupported package manager: $SC_PACKAGE_MANAGER"
+            exit 1
+            ;;
+    esac
+}

lib/privileges

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+#!/bin/sh
+
+escalate_command() {
+    if [ "$(id -u)" = "0" ]; then
+        $@
+    else
+        sudo -E $@
+    fi
+}
+
+escalate() {
+    export SC_ESCALATED=1
+    export SC_SKIP_WELCOME_HEADER=1
+
+    echo "e: sc-client $@"
+
+    escalate_command $(get_first_in_list $SC_COMMAND) $@
+}

lib/setup-env

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+#!/bin/sh
+
+set -e
+
+. $SC_SRC/lib/variables
+
+. $SC_LIB/headers
+. $SC_LIB/logger
+. $SC_LIB/manipulation
+. $SC_LIB/privileges

lib/variables

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+#!/bin/sh
+
+export SC_SRC="${SC_SRC:-/opt/sconnect}"
+
+export SC_LIB="$SC_SRC/lib"
+export SC_ASSETS="$SC_SRC/assets"