#!/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 } # 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 > "$_dir/README.md" } fi # Globals — ACTUAL_USER/ACTUAL_HOME must come before DOCKER_DIR # ($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..." local NTFY_DIR="$DOCKER_DIR/ntfy" if [ "$DRY_RUN" = true ]; then echo "[DRY-RUN] Would create $NTFY_DIR" return 0 fi mkdir -p "$NTFY_DIR" ensure_docker_dir_ownership "$NTFY_DIR" cd "$NTFY_DIR" || return 1 local _CADDY_NET_BLOCK="" if [ -d "$DOCKER_DIR/caddy" ]; then _CADDY_NET_BLOCK=" networks: - caddy_net " fi local _CADDY_NET_SECTION="" if [ -d "$DOCKER_DIR/caddy" ]; then _CADDY_NET_SECTION=" networks: caddy_net: external: true name: ${SITE_CADDY_NET:-caddy_net} " fi cat > docker-compose.yml << NTFY_COMPOSE name: ntfy services: ntfy: image: binwiederhier/ntfy:latest container_name: ntfy hostname: ntfy restart: unless-stopped command: serve environment: - TZ=\${TZ} volumes: - ./cache:/var/cache/ntfy - ./config:/etc/ntfy ports: - "8090:80" ${_CADDY_NET_BLOCK}${_CADDY_NET_SECTION} NTFY_COMPOSE 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" ] && [ "$SITE_DOMAIN" != "example.com" ]; then NTFY_BASE_URL="https://ntfy.${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 configured at $NTFY_DIR" configure_caddy_for_service "ntfy" "ntfy:80" "ntfy" write_readme "$NTFY_DIR" << MD # ntfy Self-hosted push notification server. Send notifications from scripts to your phone or browser. ## Access - URL: http://localhost:8090 ## Usage - Send a notification: \`curl -d "Hello!" localhost:8090/mytopic\` - Subscribe on phone: ntfy app -> Add subscription -> localhost:8090/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 $NTFY_DIR docker compose up -d # start docker compose down # stop docker compose logs -f # logs \`\`\` MD local START_NTFY="" prompt_yn "Start ntfy now? (y/n):" "y" START_NTFY if [ "$START_NTFY" = "y" ] || [ "$START_NTFY" = "Y" ]; then docker compose up -d 2>/dev/null && log_success "ntfy started" || log_warning "Failed to start" fi echo " Access at: http://localhost:8090" echo "" echo " Send notification: curl -d \"Hello!\" localhost:8090/mytopic" echo " Subscribe on phone: ntfy app → Add subscription → localhost:8090/mytopic" echo "" } # Run immediately when executed directly (deferred until after function definition) [[ "${_RUN_STANDALONE:-0}" == 1 ]] && install_ntfy