105 lines
4.1 KiB
Bash
Executable File
105 lines
4.1 KiB
Bash
Executable File
#!/bin/bash
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# The whole script is wrapped in { ...; exit; } so bash parses all of it before
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# running anything. That way, replacing this file mid-run (e.g. by git pull and
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# the copy below) can't make the running copy read a mix of old and new text.
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{
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# Install a script atomically (copy to a temp file, then rename over the target)
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install_script() {
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local tmp
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tmp="$(mktemp "$2.XXXXXX")" && cp "$1" "$tmp" && chmod 755 "$tmp" && mv -f "$tmp" "$2"
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}
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# Print the logo
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print_logo() {
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cat << "EOF"
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███╗ ███╗██╗███╗ ██╗██╗
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████╗ ████║██║████╗ ██║██║
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██╔████╔██║██║██╔██╗ ██║██║
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██║╚██╔╝██║██║██║╚██╗██║██║
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██║ ╚═╝ ██║██║██║ ╚████║██║
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╚═╝ ╚═╝╚═╝╚═╝ ╚═══╝╚═╝
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███████╗███████╗██████╗ ██╗ ██╗███████╗██████╗
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██╔════╝██╔════╝██╔══██╗██║ ██║██╔════╝██╔══██╗
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███████╗█████╗ ██████╔╝██║ ██║█████╗ ██████╔╝
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╚════██║██╔══╝ ██╔══██╗╚██╗ ██╔╝██╔══╝ ██╔══██╗
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███████║███████╗██║ ██║ ╚████╔╝ ███████╗██║ ██║
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╚══════╝╚══════╝╚═╝ ╚═╝ ╚═══╝ ╚══════╝╚═╝ ╚═╝
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EOF
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}
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# Clear screen and show logo
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clear
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print_logo
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MINISERVER="$HOME/.local/share/MiniServer"
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echo "Updating MiniServer..."
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if [[ -z "$UPDATE_REEXECED" ]] && ! git -C "$MINISERVER" pull; then
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echo "WARNING: could not pull the latest MiniServer; running the update hooks already on disk."
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export UPDATE_PULL_FAILED=1
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fi
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mkdir -p "$HOME/.local/bin" "$MINISERVER/updates.d"
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install_script "$MINISERVER/update" ~/.local/bin/update
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install_script "$MINISERVER/refresh" ~/.local/bin/refresh
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install_script "$MINISERVER/sibling" ~/.local/bin/sibling
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install_script "$MINISERVER/version" ~/.local/bin/version
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install_script "$MINISERVER/configure" ~/.local/bin/configure
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if [[ -z "$UPDATE_REEXECED" ]]; then
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export UPDATE_REEXECED=1
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exec ~/.local/bin/update
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fi
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# An upgrade that runs out of disk space part way through can leave the system
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# half-upgraded. Set UPDATE_FORCE=1 to skip this check.
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MIN_FREE_GIB=10
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FREE_KIB="$(df -k --output=avail / | tail -n 1 | tr -d ' ')"
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if [[ -z "$UPDATE_FORCE" && "$FREE_KIB" =~ ^[0-9]+$ ]] && (( FREE_KIB < MIN_FREE_GIB * 1024 * 1024 )); then
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echo "Only $(( FREE_KIB / 1024 / 1024 )) GiB free on /; updating needs at least $MIN_FREE_GIB GiB."
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echo "Free up space (sudo paccache -rk1 clears old cached packages), or run: UPDATE_FORCE=1 update"
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exit 1
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fi
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# Ask for the password once, then keep sudo's cached credentials fresh until
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# update exits, so long-running hooks don't stop for a password again.
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sudo -v || exit 1
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while kill -0 $$ 2>/dev/null; do sudo -n -v; sleep 60; done 2>/dev/null &
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SUDO_KEEPALIVE_PID=$!
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trap 'kill "$SUDO_KEEPALIVE_PID" 2>/dev/null' EXIT
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FAILED=()
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[[ -n "$UPDATE_PULL_FAILED" ]] && FAILED+=("git pull")
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# Each hook runs in its own subshell so a cd, set -e, exit, or stray variable
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# in one hook can't leak into or abort the hooks after it.
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for plugin in "$MINISERVER/updates.d/"*.sh; do
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[ -f "$plugin" ] || continue
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(
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unset -f is_installed run_update
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source "$plugin"
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if declare -f run_update > /dev/null; then
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if ! declare -f is_installed > /dev/null || is_installed; then
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run_update
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fi
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fi
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)
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# Checked separately: under `( ... ) ||`, bash would ignore set -e inside the hook
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[ $? -eq 0 ] || FAILED+=("$(basename "$plugin")")
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done
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if (( ${#FAILED[@]} > 0 )); then
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echo "Done, with errors in: ${FAILED[*]}"
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exit 1
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fi
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echo "Done."
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exit 0
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}
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