Wireguard helper scripts to add, remove and list active keys

2026-08-05 21:46:16 +03:00
parent 7126c1ab0d
commit 9ad5e873c3
5 changed files with 476 additions and 0 deletions
@@ -0,0 +1,91 @@
+#!/bin/bash
+
+# ==============================================================================
+# 1. SETTINGS & GLOBALS
+# ==============================================================================
+# Exit immediately if a command exits with a non-zero status
+set -e 
+
+# Determine the directory where this script resides
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+cd "$SCRIPT_DIR"
+
+# Global variables
+server_pubkey=""
+ips=""
+
+# ==============================================================================
+# 2. HELPER FUNCTIONS
+# ==============================================================================
+# Load environment variable of the script
+environment_var() {
+    echo "--- Starting Environment & Pre-flight Checks ---"
+    # --- .env LOADING ---
+    # This safely loads the variables from .env without touching other files
+    if [ -f "$SCRIPT_DIR/.env" ]; then
+        set -a
+        source "$SCRIPT_DIR/.env"
+        set +a
+        echo "[✔] Environment variables loaded."
+    else
+        echo "[!] No .env file found. Using defaults."
+    fi
+
+    # --- Variable Checks ---
+    server_pubkey=$(cat ${WG0_DIR}/publickey)
+    ips=$(grep -i '^\s*AllowedIPs\s*=\s*' "${WG0_DIR}/wg0.conf" | sed 's/^\s*AllowedIPs\s*=\s*//I; s/\s*$//')
+}
+
+# Find the last registered client IP
+find_last_ip() {
+    # Find the last ip an create the next ip
+    if [ -n "$ips" ]; then
+        last=$(printf '%s\n' "$ips" | tail -1)
+        addr=${last%/*}   # strip /32 if present
+        IFS=. read -r a b c d <<< "$addr"
+        next_ip="10.0.0.$((d + 1))"
+        printf 'Last CIDR: %s\nNext IP: %s/32\n' "$last" "$next_ip"
+    else
+        next_ip="10.0.0.2"
+        printf 'No peers found, starting at %s/32\n' "$next_ip"
+    fi
+}
+
+# Show the template of the client's configuration file
+client_show_template() {
+    # Show template from .client_template file
+    template_file="${TOOLS_DIR}/client_template"
+
+    if [ -f "$template_file" ]; then
+        printf "\n--- Wireguard client template (generated from %s) ---\n" "$template_file"
+
+        # Process template: replace placeholders
+        sed -e "s|<%CLIENT_IP%>|${next_ip}|g" \
+            -e "s|<%SERVER_PUBLIC_KEY%>|${server_pubkey}|g" \
+            -e "s|<%DOMAIN_NAME%>|${DOMAIN_NAME}|g" \
+            "$template_file"
+    else
+        printf "\n--- Error: Template file %s not found ---\n" "$template_file"
+        exit 1
+    fi
+}
+
+# ==============================================================================
+# 3. MAIN LOGIC
+# ==============================================================================
+main() {
+    # Load environment variables first
+    environment_var
+
+    # Print current values
+    printf 'Public Key of the server: %s\n' "$server_pubkey"
+    printf 'List of current clients: %s\n' "$ips"
+
+    # Find the last IP
+    find_last_ip
+    # Show client template
+    client_show_template
+}
+
+# Invoke main
+main "$@"