From afcc5ffe886739939befa10d47f2c0d944db860e Mon Sep 17 00:00:00 2001
From: it00147 <alessio.bleggi@gmail.com>
Date: Wed, 3 Dec 2025 17:20:30 +0000
Subject: [PATCH] v2.1 - Added Ninja Mode

---
 README.md |  6 ++++++
 app.py    | 41 ++++++++++++++++++++---------------------
 2 files changed, 26 insertions(+), 21 deletions(-)

diff --git a/README.md b/README.md
index d37c36f..9e63ba9 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,9 @@
 # myip – IP & RIPE Lookup (extended)
 
 UI moderna + IP reale + RIPE esteso (ASN, Provider, Prefix, Routing Status, Reverse DNS, GeoLocation, Abuse Contact).
+v2.1 - Aggiunta funzionalità Ninja
+https://fqdn/
+→ comportamento normale, usa l’IP del client.
+
+https://fqdn/?checkip=8.8.8.8
+→ la pagina mostrerà i dati RIPE per 8.8.8.8, senza cambiare la UI.
diff --git a/app.py b/app.py
index 886e7b6..9cb497b 100644
--- a/app.py
+++ b/app.py
@@ -172,7 +172,25 @@ def get_client_ip():
 
     # 3) Fallback: remote_addr così com'è
     return request.remote_addr or "Sconosciuto"
+def get_effective_ip():
+    """
+    Restituisce (ip, overridden)
+    - ip: indirizzo IP da usare per la lookup
+    - overridden: True se l'IP è stato forzato via ?checkip=
+    """
+    override = request.args.get("checkip")
+    if override:
+        override = override.strip()
+        try:
+            # valida che sia un IP v4/v6
+            ipaddress.ip_address(override)
+            return override, True
+        except ValueError:
+            # se non è valido, ignora e usa il flusso normale
+            pass
 
+    # default: uso l'IP reale del client
+    return get_client_ip(), False
 
 def fetch_ripe_info(ip: str):
     """Recupera informazioni RIPEstat estese per l'IP, compatibili col template."""
@@ -354,34 +372,15 @@ def fetch_ripe_info(ip: str):
 
 @app.route("/")
 def index():
-    ip = get_client_ip()
+    ip, overridden = get_effective_ip()
     ripe_info = fetch_ripe_info(ip) if ip != "Sconosciuto" else None
     return render_template_string(
         HTML_TEMPLATE,
         ip=ip,
         ripe=ripe_info,
         show_logo=True,
+        override=overridden,
     )
-@app.route("/debug")
-def debug():
-    from flask import jsonify
-    return jsonify(
-        remote_addr=request.remote_addr,
-        x_forwarded_for=request.headers.get("X-Forwarded-For"),
-        x_real_ip=request.headers.get("X-Real-IP"),
-        all_headers=dict(request.headers),
-    )
-
-@app.route("/ripe-debug")
-def ripe_debug():
-    from flask import jsonify
-    ip = get_client_ip()
-    ripe_info = fetch_ripe_info(ip) if ip != "Sconosciuto" else None
-    return jsonify({
-        "ip": ip,
-        "ripe": ripe_info,
-    })
-
 
 if __name__ == "__main__":
     app.run(host="0.0.0.0", port=8000)