Files
Claude bec9228c55 Back up existing files before every service overwrites them
Confirmed live: install_frigate()'s fresh-install path overwrote a
working, hand-crafted docker-compose.yml (Frigate + mosquitto +
frigate-notify) with zero backup, because that file's shape didn't match
what frigate.sh's own "existing install" detection knew how to recognize.
Every service's own detection is a judgment call about what counts as
"already installed" and can miss a real setup built outside this repo's
conventions.

lib/common.sh gains backup_if_exists(FILE) — copies FILE to
FILE.bak.<timestamp> if it exists, no-ops otherwise (including DRY_RUN).
Applied before every service's own `cat > docker-compose.yml`/`cat > .env`
write across all 60 services that do one (115 call sites), plus a matching
standalone-mode stub added to every service's own bootstrap block, same
convention already used for port_in_use/find_free_port. This doesn't
replace a service's own update/fresh-reinstall detection — it's the safety
net underneath it, so a wrong detection costs a .bak file to restore from
instead of the original silently disappearing.

Also fixes the actual gap that surfaced this: services/frigate.sh's
Authelia offer only checked for Authelia installed locally on Frigate's
own box, which is never true for a dedicated NVR box with no local Caddy
either (the common shape — Caddy lives elsewhere, snippet-generation mode
already handles that). Now offers Authelia protection unconditionally and,
when Authelia isn't local, asks whether it lives on the same machine as
Caddy (still "import authelia", since that's local to wherever Caddy ends
up) or on a genuinely separate third machine (the explicit
header-pinned forward_auth form, per CLAUDE.md's "forward_auth to a remote
Authelia" note, needed because a bare authelia:9091 shortcut only works
one hop).
2026-08-26 17:26:17 +00:00

445 lines
19 KiB
Bash

#!/bin/bash
# services/ntfy.sh — ntfy self-hosted push notification server.
# Part of the modular post-install system (sourced by setup.sh).
#
# Can also be run standalone on any machine:
# sudo bash ntfy.sh
# (Docker must already be installed when run standalone)
# ── Standalone bootstrap ──────────────────────────────────────────────────────
# Detected when the script is executed directly rather than sourced by setup.sh.
# Sets up helpers and globals, then defers execution until after the function
# definition at the bottom of this file.
if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
[[ "$(id -u)" == "0" ]] || { echo "Run with sudo: sudo bash $0"; exit 1; }
_SELF_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
_COMMON="$_SELF_DIR/../lib/common.sh"
if [[ -f "$_COMMON" ]]; then
# Full repo present — use the real helpers (picks up ~/docker/.config too)
# shellcheck source=../lib/common.sh
source "$_COMMON"
else
# One-off copy — inline minimal stubs so the script works without the repo
log_info() { echo -e "\033[0;34m[INFO]\033[0m $*"; }
log_success() { echo -e "\033[0;32m[OK]\033[0m $*"; }
log_warning() { echo -e "\033[1;33m[WARN]\033[0m $*"; }
log_error() { echo -e "\033[0;31m[ERROR]\033[0m $*" >&2; }
require_docker() {
command -v docker &>/dev/null || {
log_error "Docker not found. Install it first:"
log_error " curl -fsSL https://get.docker.com | sudo sh"
return 1
}
docker compose version &>/dev/null || {
log_error "Docker Compose plugin missing:"
log_error " sudo apt-get install -y docker-compose-plugin"
return 1
}
}
ensure_docker_dir_ownership() {
chown -R "$ACTUAL_USER:$ACTUAL_USER" "$@" 2>/dev/null || true
}
port_in_use() {
local _port="$1" _proto="${2:-tcp}"
local _flag="-tlnH"
[ "$_proto" = "udp" ] && _flag="-ulnH"
ss "$_flag" "sport = :${_port}" 2>/dev/null | grep -q .
}
find_free_port() {
local _varname="$1" _port="$2" _proto="${3:-tcp}"
while port_in_use "$_port" "$_proto"; do
_port=$((_port + 1))
done
eval "$_varname='$_port'"
}
# Match common.sh's eval-based pattern so local vars in install_* are set correctly
prompt_text() {
local _q="$1" _def="$2" _var="$3" _r
[[ "${UNATTENDED:-false}" == "true" ]] && { eval "$_var='$_def'"; return; }
read -r -p " $_q " _r
eval "$_var='${_r:-$_def}'"
}
prompt_yn() {
local _q="$1" _def="$2" _var="$3" _r
[[ "${UNATTENDED:-false}" == "true" ]] && { eval "$_var='$_def'"; return; }
read -r -p " $_q " _r
eval "$_var='${_r:-$_def}'"
}
configure_caddy_for_service() {
local _name="$1" _upstream="$2" _subdomain="$3" _extra="${4:-}"
local _caddy_dir="$DOCKER_DIR/caddy"
local _caddyfile="$_caddy_dir/Caddyfile"
local _display_port="${_upstream##*:}"
# Determine mode: local Caddy, remote Caddy, or none
local _mode="none"
[[ -d "$_caddy_dir" ]] && _mode="local"
[[ -n "${CADDY_REMOTE_HOST:-}" ]] && [[ "$_mode" != "local" ]] && _mode="remote"
[[ "$_mode" == "none" ]] && {
log_info "Access $_name directly on port $_display_port."
return 0
}
echo ""
local _do_caddy=""
if [[ "$_mode" == "remote" ]]; then
log_info "Remote Caddy configured (${CADDY_REMOTE_HOST})."
log_info "A snippet file will be saved to ~/docker/caddy-snippets/."
fi
read -r -p " Configure Caddy reverse proxy for $_name? [y/N]: " _do_caddy
[[ "${_do_caddy,,}" == "y" ]] || {
log_info "Skipping — access at: http://localhost:$_display_port"
return 0
}
# Domain prompt — pre-fill from SITE_DOMAIN when available
local _default_domain=""
if [[ -n "${SITE_DOMAIN:-}" ]] && [[ "$SITE_DOMAIN" != "example.com" ]]; then
_default_domain="${_subdomain}.${SITE_DOMAIN}"
log_info "Default: $_default_domain"
fi
local _domain=""
read -r -p " Domain [${_default_domain:-required}]: " _domain
_domain="${_domain:-$_default_domain}"
[[ -n "$_domain" ]] || { log_warning "No domain entered — skipping Caddy."; return 0; }
# Build upstream — remote Caddy uses host IP:port, not container name
local _block_upstream="$_upstream"
if [[ "$_mode" == "remote" ]]; then
_block_upstream="${CADDY_REMOTE_HOST}:${_display_port}"
fi
local _site_block
_site_block="$(cat << CBLOCK
# $_name
${_domain} {
reverse_proxy ${_block_upstream}
header {
Strict-Transport-Security "max-age=31536000; includeSubDomains; preload"
X-Content-Type-Options "nosniff"
X-Frame-Options "SAMEORIGIN"
Referrer-Policy "strict-origin-when-cross-origin"
}
log {
output file /var/log/caddy/${_domain}.log
format json
}
${_extra}
}
CBLOCK
)"
if [[ "$_mode" == "local" ]]; then
if [[ -f "$_caddyfile" ]]; then
local _bk="$_caddy_dir/Caddyfile.backup.$(date +%Y%m%d-%H%M%S)"
cp "$_caddyfile" "$_bk"
log_info "Backed up Caddyfile to $(basename "$_bk")"
else
touch "$_caddyfile"
fi
if grep -q "^${_domain}" "$_caddyfile" 2>/dev/null; then
log_warning "$_domain already in Caddyfile"
local _ow=""
read -r -p " Overwrite? [y/N]: " _ow
[[ "${_ow,,}" == "y" ]] || { log_info "Keeping existing entry."; return 0; }
sed -i "/^${_domain}/,/^}/d" "$_caddyfile"
fi
printf '%s\n' "$_site_block" >> "$_caddyfile"
log_success "Added $_domain to Caddyfile"
docker exec caddy caddy fmt --overwrite /etc/caddy/Caddyfile 2>/dev/null || true
if docker exec caddy caddy reload --config /etc/caddy/Caddyfile 2>/dev/null; then
log_success "$_name accessible at: https://$_domain"
else
log_warning "Reload failed — check: docker logs caddy"
log_info "Manual reload: docker exec caddy caddy reload --config /etc/caddy/Caddyfile"
fi
else
local _snippet_dir="$DOCKER_DIR/caddy-snippets"
local _snippet_file="$_snippet_dir/${_subdomain}.caddy"
mkdir -p "$_snippet_dir"
printf '%s\n' "$_site_block" > "$_snippet_file"
chown "$ACTUAL_USER:$ACTUAL_USER" "$_snippet_file" 2>/dev/null || true
log_success "Snippet saved: $_snippet_file"
log_info "Copy to Caddy machine:"
log_info " scp $_snippet_file caddy-host:~/caddy-snippets/"
log_info " rsync -av $_snippet_dir/ caddy-host:~/caddy-snippets/ (all at once)"
fi
}
write_readme() {
local _dir="$1"; shift
mkdir -p "$_dir"
cat > "$_dir/README.md"
}
backup_if_exists() {
local _file="$1"
[ -f "$_file" ] || return 0
cp -p "$_file" "${_file}.bak.$(date +%Y%m%d-%H%M%S)" 2>/dev/null
}
fi
# Globals — ACTUAL_USER/ACTUAL_HOME must come before DOCKER_DIR
# ($HOME under sudo is /root, not the real user's home)
ACTUAL_USER="${ACTUAL_USER:-${SUDO_USER:-$USER}}"
ACTUAL_HOME="$(getent passwd "$ACTUAL_USER" 2>/dev/null | cut -d: -f6 || echo "${HOME:-/root}")"
DOCKER_DIR="${DOCKER_DIR:-$ACTUAL_HOME/docker}"
DRY_RUN="${DRY_RUN:-false}"
UNATTENDED="${UNATTENDED:-false}"
SITE_TZ="${SITE_TZ:-$(cat /etc/timezone 2>/dev/null || echo UTC)}"
SITE_DOMAIN="${SITE_DOMAIN:-example.com}"
SITE_CADDY_NET="${SITE_CADDY_NET:-caddy_net}"
register_service() { :; } # no-op — no wizard to register into
_RUN_STANDALONE=1
fi
# ─────────────────────────────────────────────────────────────────────────────
register_service ntfy utilities "Self-hosted push notifications (ntfy)" 8090
install_ntfy() {
require_docker || return 1
log_info "Installing ntfy..."
# ── Instance selection ───────────────────────────────────────────────────
# First instance keeps the plain "ntfy" name/paths/port exactly as before
# (zero behavior change for anyone with a single instance — including
# crowdsec.sh/pstn-trunk.sh, which curl the default port directly). Only
# asking to add a second one introduces suffixed naming — same pattern as
# services/mattermost.sh and services/wordpress.sh.
local NTFY_DIR="$DOCKER_DIR/ntfy"
local INSTANCE_SUFFIX="" CONTAINER="ntfy"
local WEB_PORT="8090"
if [ "$DRY_RUN" = true ]; then
echo "[DRY-RUN] Would offer to add a new, separate instance if one already exists"
echo "[DRY-RUN] Would create $NTFY_DIR(-<name>)"
echo "[DRY-RUN] Would auto-scan for a free host port if this is an additional instance"
return 0
fi
if [ -d "$NTFY_DIR" ]; then
echo ""
echo " ntfy is already installed at $NTFY_DIR."
echo " 1) Manage that install (update / full reinstall / cancel)"
echo " 2) Add a NEW, separate ntfy instance alongside it (its own"
echo " server, topics, and port — full isolation)"
echo ""
local _TOP_CHOICE=""
prompt_text " Choice [1/2]:" "1" _TOP_CHOICE
if [ "$_TOP_CHOICE" = "2" ]; then
local _suffix=""
while true; do
prompt_text " Short name for the new instance (letters/numbers/hyphens, e.g. 'alerts'):" "" _suffix
_suffix="$(echo "$_suffix" | tr -cs 'a-zA-Z0-9-' '-' | sed 's/^-*//;s/-*$//')"
if [ -z "$_suffix" ]; then
log_warning "Name can't be empty."; continue
fi
if [ -d "$DOCKER_DIR/ntfy-$_suffix" ]; then
log_warning "ntfy-$_suffix already exists — pick another name."; continue
fi
break
done
INSTANCE_SUFFIX="$_suffix"
NTFY_DIR="$DOCKER_DIR/ntfy-$_suffix"
CONTAINER="ntfy-$_suffix"
log_info "New instance: $NTFY_DIR"
else
# "Manage that install" on THIS instance — the banner above promises
# update/fresh/cancel, so actually offer it instead of falling straight
# through into the same unconditional-overwrite flow as a new install.
if [[ -f "$NTFY_DIR/docker-compose.yml" ]]; then
local MODE=""
prompt_reinstall_mode MODE
case "$MODE" in
update)
log_info "Refreshing the ntfy image only — existing config, port, and Caddy setup are left as-is."
( cd "$NTFY_DIR" && docker compose pull && docker compose up -d ) \
&& log_success "ntfy image refreshed" \
|| log_warning "Refresh failed — check: docker compose -f $NTFY_DIR/docker-compose.yml logs"
return 0
;;
cancel)
log_info "Leaving the existing install as-is."
return 0
;;
fresh) ;; # fall through to the full install flow below
esac
fi
fi
fi
# Scan for a free port unconditionally — not just when adding an explicit
# additional instance. A plain first install can just as easily collide
# with an unrelated service that already claimed this default port — see
# CLAUDE.md's "Port collision avoidance" section.
find_free_port WEB_PORT "$WEB_PORT"
mkdir -p "$NTFY_DIR"
ensure_docker_dir_ownership "$NTFY_DIR"
cd "$NTFY_DIR" || return 1
# Mirrors configure_caddy_for_service's own mode resolution (lib/common.sh):
# explicit CADDY_MODE from the site config wins, then a local ~/docker/caddy,
# then the legacy CADDY_REMOTE_HOST var. Only "local" joins caddy_net — a
# remote Caddy box can't resolve container names on this host's bridge
# network anyway; it reaches this service via the host's published port.
local _CADDY_MODE="${CADDY_MODE:-none}"
[ "$_CADDY_MODE" = "none" ] && [ -d "$DOCKER_DIR/caddy" ] && _CADDY_MODE="local"
[ "$_CADDY_MODE" = "none" ] && [ -n "${CADDY_REMOTE_HOST:-}" ] && _CADDY_MODE="remote"
local _CADDY_NET_BLOCK=""
local _CADDY_NET_SECTION=""
if [ "$_CADDY_MODE" = "local" ]; then
_CADDY_NET_BLOCK=" networks:
- caddy_net
"
_CADDY_NET_SECTION="
networks:
caddy_net:
external: true
name: ${SITE_CADDY_NET:-caddy_net}
"
fi
backup_if_exists docker-compose.yml
cat > docker-compose.yml << NTFY_COMPOSE
name: $CONTAINER
services:
ntfy:
image: binwiederhier/ntfy:latest
container_name: $CONTAINER
hostname: $CONTAINER
restart: unless-stopped
command: serve
environment:
- TZ=\${TZ}
volumes:
- ./cache:/var/cache/ntfy
- ./config:/etc/ntfy
ports:
- "${WEB_PORT}:80"
${_CADDY_NET_BLOCK}${_CADDY_NET_SECTION}
NTFY_COMPOSE
backup_if_exists .env
cat > .env << NTFY_ENV
TZ=${SITE_TZ:-$(cat /etc/timezone 2>/dev/null || echo UTC)}
CADDY_NET=$SITE_CADDY_NET
NTFY_ENV
mkdir -p cache config
# Write server.yml — ntfy needs base-url for correct push notification links
# Only on fresh install; never clobber existing config
if [ ! -f config/server.yml ]; then
local NTFY_BASE_URL=""
if [ -n "$SITE_DOMAIN" ] && [ "$SITE_DOMAIN" != "example.com" ]; then
NTFY_BASE_URL="https://ntfy${INSTANCE_SUFFIX:+-$INSTANCE_SUFFIX}.${SITE_DOMAIN}"
fi
cat > config/server.yml << NTFY_CFG
# ntfy server configuration — https://docs.ntfy.sh/config/
base-url: "${NTFY_BASE_URL:-https://ntfy.example.com}" # UPDATE to your actual domain
cache-file: /var/cache/ntfy/cache.db
cache-duration: 12h
auth-file: /var/cache/ntfy/auth.db
# read-write, not deny-all: with an auth-file present, ntfy auth-checks every
# request, and deny-all blocks anonymous publish/subscribe on EVERY topic
# unless you separately create a user and grant a per-topic ACL (nothing in
# this installer, crowdsec.sh, or pstn-trunk.sh does that) — every ntfy alert
# they curl to a topic silently 403s, and a plain phone subscription gets
# nothing, with no visible error either side. read-write matches public
# ntfy.sh's own model instead: anyone who knows/guesses the topic name can
# read/publish it, so treat topic names as a shared secret (long/random for
# anything sensitive) rather than relying on auth you'd have to wire up
# per-script. Confirmed live: this was the actual cause of a self-hosted
# instance never delivering alerts despite a correct topic subscription.
auth-default-access: read-write
behind-proxy: true
NTFY_CFG
[[ -n "$NTFY_BASE_URL" ]] \
&& log_info "base-url set to $NTFY_BASE_URL — update if domain changes" \
|| log_warning "base-url set to placeholder — edit config/server.yml after install"
log_info "auth-default-access: read-write — topics are open to anyone who knows the"
log_info "topic name (same model as public ntfy.sh). Use long/random topic names for"
log_info "anything sensitive, or lock down individual topics later with 'ntfy access'."
fi
chown -R "$ACTUAL_USER:$ACTUAL_USER" "$NTFY_DIR"
echo ""
log_success "ntfy${INSTANCE_SUFFIX:+ ($INSTANCE_SUFFIX)} configured at $NTFY_DIR (port $WEB_PORT)"
configure_caddy_for_service "ntfy${INSTANCE_SUFFIX:+ ($INSTANCE_SUFFIX)}" "${CONTAINER}:80" "ntfy${INSTANCE_SUFFIX:+-$INSTANCE_SUFFIX}"
write_readme "$NTFY_DIR" << MD
# ntfy${INSTANCE_SUFFIX:+ — $INSTANCE_SUFFIX}
Self-hosted push notification server. Send notifications from scripts to your
phone or browser.
$( [ -n "$INSTANCE_SUFFIX" ] && echo "
This is a separate, fully isolated instance (own server, own topics, own
port) — not shared topics with another ntfy instance.")
## Access
- URL: http://localhost:${WEB_PORT}
## Usage
- Send a notification: \`curl -d "Hello!" localhost:${WEB_PORT}/mytopic\`
- Subscribe on phone: ntfy app -> Add subscription -> localhost:${WEB_PORT}/mytopic
## Access model
\`auth-default-access: read-write\` — anyone who knows a topic name can read
and publish to it, same as public ntfy.sh. There's no per-script login wired
up (crowdsec.sh, pstn-trunk.sh, etc. all just \`curl -d ... \$topic_url\` with
no auth), so this is what makes those alerts actually arrive. Treat topic
names as a shared secret — use long/random ones for anything sensitive — or
lock a specific topic down individually:
\`\`\`
docker exec ntfy ntfy user add myuser
docker exec ntfy ntfy access myuser mytopic read-write
docker exec ntfy ntfy access everyone mytopic deny
\`\`\`
## Data
- Config: ./config (mounted to /etc/ntfy)
- Cache: ./cache (mounted to /var/cache/ntfy)
## Manage
\`\`\`
cd $NTFY_DIR
docker compose up -d # start
docker compose down # stop
docker compose logs -f # logs
\`\`\`
MD
local START_NTFY=""
prompt_yn "Start ntfy${INSTANCE_SUFFIX:+ ($INSTANCE_SUFFIX)} now? (y/n):" "y" START_NTFY
if [ "$START_NTFY" = "y" ] || [ "$START_NTFY" = "Y" ]; then
docker compose up -d 2>/dev/null && log_success "ntfy${INSTANCE_SUFFIX:+ ($INSTANCE_SUFFIX)} started" || log_warning "Failed to start"
fi
echo " Access at: http://localhost:${WEB_PORT}"
echo ""
echo " Send notification: curl -d \"Hello!\" localhost:${WEB_PORT}/mytopic"
echo " Subscribe on phone: ntfy app → Add subscription → localhost:${WEB_PORT}/mytopic"
echo ""
}
# Run immediately when executed directly (deferred until after function definition)
[[ "${_RUN_STANDALONE:-0}" == 1 ]] && install_ntfy