Claude
fa906186c3
Only include the caddy_net network block in generated docker-compose.yml files when ~/docker/caddy exists. Prevents "network caddy_net declared as external, but could not be found" on standalone installs without Caddy. Affected: actualbudget, archivebox, arm, audiobookshelf, calibre-web, changedetection, drum-rhythm-game, emby, fmd, frigate, frigate-audio, frigate-notify, gatus, homeassistant, immich, iopaint, jellyfin, joplin, koha, lyrion, magicmirror, mail-archiver, mattermost, mealie, meshcentral, n8n, nextcloud, ntfy, onlyoffice, portainer, stirling-pdf, syncthing, traccar, unifi, uptimekuma, vaultwarden, wg-easy Skipped: authelia (creates caddy_net itself), caddy, crowdsec, wolf, wolf-pair, and services using network_mode: host with no caddy_net. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01D8ckUJQtj1pH8jtAddBDZs
339 lines
13 KiB
Bash
339 lines
13 KiB
Bash
#!/bin/bash
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# services/wg-easy.sh — WireGuard VPN with a web management UI (wg-easy).
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# Part of the modular post-install system (sourced by setup.sh).
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#
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# Can also be run standalone on any machine:
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# sudo bash wg-easy.sh
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# (Docker must already be installed when run standalone)
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#
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# Ported from ubuntu-post-install-24.04-crowdsec.sh (# ---- WG-EASY ----).
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# Own ~/docker/wg-easy/ with a standalone docker-compose.yml + .env.
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# Requires cap_add: NET_ADMIN + SYS_MODULE and ip_forward sysctl.
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# Forward UDP 51820 on your router to this server for external VPN access.
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# ── Standalone bootstrap ──────────────────────────────────────────────────────
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# Detected when the script is executed directly rather than sourced by setup.sh.
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# Sets up helpers and globals, then defers execution until after the function
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# definition at the bottom of this file.
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if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
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[[ "$(id -u)" == "0" ]] || { echo "Run with sudo: sudo bash $0"; exit 1; }
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_SELF_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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_COMMON="$_SELF_DIR/../lib/common.sh"
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if [[ -f "$_COMMON" ]]; then
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# Full repo present — use the real helpers (picks up ~/docker/.config too)
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# shellcheck source=../lib/common.sh
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source "$_COMMON"
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else
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# One-off copy — inline minimal stubs so the script works without the repo
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log_info() { echo -e "\033[0;34m[INFO]\033[0m $*"; }
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log_success() { echo -e "\033[0;32m[OK]\033[0m $*"; }
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log_warning() { echo -e "\033[1;33m[WARN]\033[0m $*"; }
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log_error() { echo -e "\033[0;31m[ERROR]\033[0m $*" >&2; }
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require_docker() {
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command -v docker &>/dev/null || {
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log_error "Docker not found. Install it first:"
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log_error " curl -fsSL https://get.docker.com | sudo sh"
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return 1
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}
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docker compose version &>/dev/null || {
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log_error "Docker Compose plugin missing:"
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log_error " sudo apt-get install -y docker-compose-plugin"
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return 1
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}
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}
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ensure_docker_dir_ownership() {
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chown -R "$ACTUAL_USER:$ACTUAL_USER" "$@" 2>/dev/null || true
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}
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# Match common.sh's eval-based pattern so local vars in install_* are set correctly
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prompt_text() {
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local _q="$1" _def="$2" _var="$3" _r
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[[ "${UNATTENDED:-false}" == "true" ]] && { eval "$_var='$_def'"; return; }
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read -r -p " $_q " _r
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eval "$_var='${_r:-$_def}'"
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}
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prompt_yn() {
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local _q="$1" _def="$2" _var="$3" _r
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[[ "${UNATTENDED:-false}" == "true" ]] && { eval "$_var='$_def'"; return; }
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read -r -p " $_q " _r
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eval "$_var='${_r:-$_def}'"
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}
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configure_caddy_for_service() {
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local _name="$1" _upstream="$2" _subdomain="$3" _extra="${4:-}"
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local _caddy_dir="$DOCKER_DIR/caddy"
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local _caddyfile="$_caddy_dir/Caddyfile"
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local _display_port="${_upstream##*:}"
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# Determine mode: local Caddy, remote Caddy, or none
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local _mode="none"
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[[ -d "$_caddy_dir" ]] && _mode="local"
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[[ -n "${CADDY_REMOTE_HOST:-}" ]] && [[ "$_mode" != "local" ]] && _mode="remote"
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[[ "$_mode" == "none" ]] && {
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log_info "Access $_name directly on port $_display_port."
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return 0
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}
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echo ""
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local _do_caddy=""
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if [[ "$_mode" == "remote" ]]; then
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log_info "Remote Caddy configured (${CADDY_REMOTE_HOST})."
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log_info "A snippet file will be saved to ~/docker/caddy-snippets/."
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fi
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read -r -p " Configure Caddy reverse proxy for $_name? [y/N]: " _do_caddy
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[[ "${_do_caddy,,}" == "y" ]] || {
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log_info "Skipping — access at: http://localhost:$_display_port"
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return 0
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}
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# Domain prompt — pre-fill from SITE_DOMAIN when available
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local _default_domain=""
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if [[ -n "${SITE_DOMAIN:-}" ]] && [[ "$SITE_DOMAIN" != "example.com" ]]; then
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_default_domain="${_subdomain}.${SITE_DOMAIN}"
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log_info "Default: $_default_domain"
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fi
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local _domain=""
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read -r -p " Domain [${_default_domain:-required}]: " _domain
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_domain="${_domain:-$_default_domain}"
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[[ -n "$_domain" ]] || { log_warning "No domain entered — skipping Caddy."; return 0; }
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# Build upstream — remote Caddy uses host IP:port, not container name
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local _block_upstream="$_upstream"
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if [[ "$_mode" == "remote" ]]; then
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_block_upstream="${CADDY_REMOTE_HOST}:${_display_port}"
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fi
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local _site_block
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_site_block="$(cat << CBLOCK
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# $_name
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${_domain} {
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reverse_proxy ${_block_upstream}
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header {
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Strict-Transport-Security "max-age=31536000; includeSubDomains; preload"
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X-Content-Type-Options "nosniff"
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X-Frame-Options "SAMEORIGIN"
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Referrer-Policy "strict-origin-when-cross-origin"
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}
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log {
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output file /var/log/caddy/${_domain}.log
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format json
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}
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${_extra}
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}
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CBLOCK
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)"
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if [[ "$_mode" == "local" ]]; then
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if [[ -f "$_caddyfile" ]]; then
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local _bk="$_caddy_dir/Caddyfile.backup.$(date +%Y%m%d-%H%M%S)"
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cp "$_caddyfile" "$_bk"
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log_info "Backed up Caddyfile to $(basename "$_bk")"
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else
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touch "$_caddyfile"
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fi
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if grep -q "^${_domain}" "$_caddyfile" 2>/dev/null; then
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log_warning "$_domain already in Caddyfile"
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local _ow=""
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read -r -p " Overwrite? [y/N]: " _ow
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[[ "${_ow,,}" == "y" ]] || { log_info "Keeping existing entry."; return 0; }
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sed -i "/^${_domain}/,/^}/d" "$_caddyfile"
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fi
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printf '%s\n' "$_site_block" >> "$_caddyfile"
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log_success "Added $_domain to Caddyfile"
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docker exec caddy caddy fmt --overwrite /etc/caddy/Caddyfile 2>/dev/null || true
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if docker exec caddy caddy reload --config /etc/caddy/Caddyfile 2>/dev/null; then
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log_success "$_name accessible at: https://$_domain"
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else
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log_warning "Reload failed — check: docker logs caddy"
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log_info "Manual reload: docker exec caddy caddy reload --config /etc/caddy/Caddyfile"
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fi
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else
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local _snippet_dir="$DOCKER_DIR/caddy-snippets"
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local _snippet_file="$_snippet_dir/${_subdomain}.caddy"
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mkdir -p "$_snippet_dir"
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printf '%s\n' "$_site_block" > "$_snippet_file"
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chown "$ACTUAL_USER:$ACTUAL_USER" "$_snippet_file" 2>/dev/null || true
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log_success "Snippet saved: $_snippet_file"
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log_info "Copy to Caddy machine:"
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log_info " scp $_snippet_file caddy-host:~/caddy-snippets/"
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log_info " rsync -av $_snippet_dir/ caddy-host:~/caddy-snippets/ (all at once)"
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fi
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}
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write_readme() {
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local _dir="$1"; shift
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mkdir -p "$_dir"
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cat > "$_dir/README.md"
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}
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fi
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# Globals — ACTUAL_USER/ACTUAL_HOME must come before DOCKER_DIR
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# ($HOME under sudo is /root, not the real user's home)
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ACTUAL_USER="${ACTUAL_USER:-${SUDO_USER:-$USER}}"
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ACTUAL_HOME="$(getent passwd "$ACTUAL_USER" 2>/dev/null | cut -d: -f6 || echo "${HOME:-/root}")"
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DOCKER_DIR="${DOCKER_DIR:-$ACTUAL_HOME/docker}"
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DRY_RUN="${DRY_RUN:-false}"
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UNATTENDED="${UNATTENDED:-false}"
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SITE_TZ="${SITE_TZ:-$(cat /etc/timezone 2>/dev/null || echo UTC)}"
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SITE_DOMAIN="${SITE_DOMAIN:-example.com}"
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SITE_CADDY_NET="${SITE_CADDY_NET:-caddy_net}"
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register_service() { :; } # no-op — no wizard to register into
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_RUN_STANDALONE=1
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fi
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# ─────────────────────────────────────────────────────────────────────────────
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register_service wg-easy utilities "WireGuard VPN with web management UI (wg-easy)" 51821
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install_wg-easy() {
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require_docker || return 1
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local WGEASY_DIR="$DOCKER_DIR/wg-easy"
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if [ "$DRY_RUN" = true ]; then
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echo "[DRY-RUN] wg-easy would:"
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echo " - Create $WGEASY_DIR with docker-compose.yml + .env (config/)"
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echo " - Auto-detect public IP for WG_HOST"
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echo " - Generate a random web UI password"
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echo " - Expose port 51821 (web UI) + 51820/udp (VPN)"
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echo " - Require router port-forward: UDP 51820 → this server"
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echo " - Offer a Caddy reverse proxy and to start the container"
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return 0
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fi
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mkdir -p "$WGEASY_DIR"
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ensure_docker_dir_ownership "$WGEASY_DIR"
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cd "$WGEASY_DIR" || return 1
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# Auto-detect public IP as default for WG_HOST
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local PUBLIC_IP WG_HOST WG_PASSWORD WG_PASSWORD_HASH
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PUBLIC_IP=$(curl -s --connect-timeout 5 ifconfig.me 2>/dev/null || echo "your-public-ip")
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WG_PASSWORD=$(openssl rand -base64 16 | tr -dc 'a-zA-Z0-9' | head -c 16)
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prompt_text "Public IP or hostname for VPN [$PUBLIC_IP]:" "$PUBLIC_IP" WG_HOST
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# wg-easy v14+ requires PASSWORD_HASH (bcrypt). Generate via docker.
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log_info "Generating bcrypt password hash (requires Docker)..."
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WG_PASSWORD_HASH=$(docker run --rm ghcr.io/wg-easy/wg-easy:latest wgpw "$WG_PASSWORD" 2>/dev/null \
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| grep -oP '\$2[ab]\$[^\s]+' | head -1)
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if [[ -z "$WG_PASSWORD_HASH" ]]; then
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log_warning "Could not generate bcrypt hash — falling back to plaintext PASSWORD env var."
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log_warning "If wg-easy fails to start, run: docker run --rm ghcr.io/wg-easy/wg-easy wgpw 'yourpassword'"
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log_warning "Then set PASSWORD_HASH in docker-compose.yml and remove PASSWORD."
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fi
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# Escape $ in hash for docker-compose env (bcrypt hashes contain $$)
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local WG_HASH_ESCAPED="${WG_PASSWORD_HASH//\$/\$\$}"
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local _CADDY_NET_BLOCK=""
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if [ -d "$DOCKER_DIR/caddy" ]; then
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_CADDY_NET_BLOCK=" networks:
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- caddy_net
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"
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fi
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local _CADDY_NET_SECTION=""
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if [ -d "$DOCKER_DIR/caddy" ]; then
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_CADDY_NET_SECTION="
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networks:
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caddy_net:
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external: true
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name: ${SITE_CADDY_NET:-caddy_net}
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"
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fi
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cat > docker-compose.yml << WGEASY_COMPOSE
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name: wg-easy
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services:
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wg-easy:
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image: ghcr.io/wg-easy/wg-easy:latest
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container_name: wg-easy
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hostname: wg-easy
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restart: unless-stopped
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cap_add:
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- NET_ADMIN
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- SYS_MODULE
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sysctls:
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- net.ipv4.ip_forward=1
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- net.ipv4.conf.all.src_valid_mark=1
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environment:
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- WG_HOST=\${WG_HOST}
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- PASSWORD_HASH=${WG_HASH_ESCAPED:-\${WG_PASSWORD}}
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- WG_DEFAULT_DNS=1.1.1.1
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volumes:
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- ./config:/etc/wireguard
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ports:
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- "51820:51820/udp"
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- "51821:51821/tcp"
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${_CADDY_NET_BLOCK}${_CADDY_NET_SECTION}
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WGEASY_COMPOSE
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cat > .env << WGEASY_ENV
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WG_HOST=$WG_HOST
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# Plain-text password — used only if PASSWORD_HASH could not be generated above
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WG_PASSWORD=$WG_PASSWORD
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CADDY_NET=$SITE_CADDY_NET
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WGEASY_ENV
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mkdir -p config
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chown -R "$ACTUAL_USER:$ACTUAL_USER" "$WGEASY_DIR"
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log_success "wg-easy configured at $WGEASY_DIR"
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configure_caddy_for_service "wg-easy" "wg-easy:51821" "vpn"
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write_readme "$WGEASY_DIR" << MD
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# wg-easy
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WireGuard VPN with a web UI for managing clients, generating QR codes,
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and monitoring connections.
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- Web UI: http://localhost:51821
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- VPN: UDP port 51820 (forward this on your router)
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- Password: stored in \`.env\` (\`WG_PASSWORD\`)
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- VPN host: \`$WG_HOST\` (update \`WG_HOST\` in .env if your IP changes)
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- Config: \`config/\`
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## Manage
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\`\`\`bash
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cd $WGEASY_DIR
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docker compose up -d # start
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docker compose down # stop
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docker compose logs -f # logs
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docker compose pull && docker compose up -d # update
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\`\`\`
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## Router setup
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Forward **UDP port 51820** to this server's LAN IP for external VPN access.
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## Adding clients
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Open http://localhost:51821, log in with your password, click "+ New Client",
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download or scan the QR code with the WireGuard app.
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MD
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local START_WGEASY=""
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prompt_yn "Start wg-easy now? (y/n):" "y" START_WGEASY
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if [ "$START_WGEASY" = "y" ] || [ "$START_WGEASY" = "Y" ]; then
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docker compose up -d && log_success "wg-easy started" || log_warning "Failed to start — check: docker compose logs"
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fi
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echo ""
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echo " Web UI: http://localhost:51821"
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echo " Password: $WG_PASSWORD (saved in .env)"
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[[ -n "$WG_PASSWORD_HASH" ]] && echo " Auth: bcrypt hash configured (v14+ compatible)" \
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|| echo " Auth: WARNING — bcrypt hash generation failed; see README"
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echo " Router: forward UDP 51820 → this server for external VPN access"
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echo ""
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}
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[[ "${_RUN_STANDALONE:-0}" == 1 ]] && install_wg-easy
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