fix: security and reliability improvements

- Switch HTTPServer to ThreadingHTTPServer (concurrent request handling)
- Replace SHA-256 password hashing with bcrypt (auth.py, database.py)
- Add bcrypt to Dockerfile
- Move qBittorrent env vars to config.py
- Move _booklore_token state out of config into booklore.py
- Remove dead fitness_token variable in command.py
- Fix OpenAI call to use default SSL context instead of no-verify ctx
- Log swallowed budget fetch error in dashboard.py

gateway/Dockerfile

@@ -1,5 +1,6 @@
 FROM python:3.12-slim
 WORKDIR /app
+RUN pip install bcrypt
 COPY server.py config.py database.py sessions.py proxy.py responses.py auth.py dashboard.py command.py ./
 COPY integrations/ ./integrations/
 EXPOSE 8100

gateway/auth.py

@@ -2,10 +2,16 @@
 Platform Gateway — Auth handlers (login, logout, register).
 """
 
+"""
+NOTE: Passwords are hashed with bcrypt. Any existing SHA-256 hashed passwords
+in the database will no longer work. The admin user is re-seeded on first boot
+if no users exist. Other users need manual password reset.
+"""
 import json
-import hashlib
 import sqlite3
 
+import bcrypt
+
 from database import get_db
 from sessions import create_session, delete_session
 
@@ -24,14 +30,12 @@ def handle_login(handler, body):
         handler._send_json({"error": "Username and password required"}, 400)
         return
 
-    pw_hash = hashlib.sha256(password.encode()).hexdigest()
-
     conn = get_db()
-    user = conn.execute("SELECT * FROM users WHERE username = ? AND password_hash = ?",
+    user = conn.execute("SELECT * FROM users WHERE username = ?",
-                        (username, pw_hash)).fetchone()
+                        (username,)).fetchone()
     conn.close()
 
-    if not user:
+    if not user or not bcrypt.checkpw(password.encode(), user["password_hash"].encode()):
         handler._send_json({"error": "Invalid credentials"}, 401)
         return
 
@@ -76,7 +80,7 @@ def handle_register(handler, body):
         handler._send_json({"error": "Username and password required"}, 400)
         return
 
-    pw_hash = hashlib.sha256(password.encode()).hexdigest()
+    pw_hash = bcrypt.hashpw(password.encode(), bcrypt.gensalt()).decode()
 
     conn = get_db()
     try:

gateway/command.py

@@ -6,9 +6,7 @@ import json
 import urllib.request
 from datetime import datetime
 
-from config import (
+from config import OPENAI_API_KEY, OPENAI_MODEL, TRIPS_URL
-    OPENAI_API_KEY, OPENAI_MODEL, TRIPS_URL, _ssl_ctx,
-)
 from sessions import get_service_token
 import proxy as _proxy_module
 from proxy import proxy_request
@@ -33,7 +31,6 @@ def handle_command(handler, user, body):
 
     # Get context: user's trips list and today's date
     trips_token = get_service_token(user["id"], "trips")
-    fitness_token = get_service_token(user["id"], "fitness")
 
     trips_context = ""
     if trips_token:
@@ -116,7 +113,7 @@ Guidelines:
             method="POST"
         )
 
-        with urllib.request.urlopen(req, context=_ssl_ctx, timeout=30) as resp:
+        with urllib.request.urlopen(req, timeout=30) as resp:
             ai_result = json.loads(resp.read().decode())
             ai_text = ai_result["choices"][0]["message"]["content"]
 

gateway/config.py

@@ -42,6 +42,12 @@ KINDLE_LABELS = os.environ.get("KINDLE_LABELS", "Kindle 1,Kindle 2")
 KARAKEEP_URL = os.environ.get("KARAKEEP_URL", "http://192.168.1.42:3005")
 KARAKEEP_API_KEY = os.environ.get("KARAKEEP_API_KEY", "")
 
+# ── qBittorrent ──
+QBITTORRENT_HOST = os.environ.get("QBITTORRENT_HOST", "192.168.1.42")
+QBITTORRENT_PORT = os.environ.get("QBITTORRENT_PORT", "8080")
+QBITTORRENT_USERNAME = os.environ.get("QBITTORRENT_USERNAME", "admin")
+QBITTORRENT_PASSWORD = os.environ.get("QBITTORRENT_PASSWORD", "")
+
 # ── AI ──
 OPENAI_API_KEY = os.environ.get("OPENAI_API_KEY", "")
 OPENAI_MODEL = os.environ.get("OPENAI_MODEL", "gpt-5.2")
@@ -49,9 +55,6 @@ OPENAI_MODEL = os.environ.get("OPENAI_MODEL", "gpt-5.2")
 # ── Session config ──
 SESSION_MAX_AGE = int(os.environ.get("SESSION_MAX_AGE", 30 * 86400))  # 30 days
 
-# ── Shared state ──
-_booklore_token = {"access": "", "refresh": "", "expires": 0}
-
 # ── Ensure data dir exists ──
 DATA_DIR.mkdir(parents=True, exist_ok=True)
 

gateway/dashboard.py

@@ -222,7 +222,7 @@ def handle_dashboard(handler, user):
                 data = json.loads(b)
                 return {"count": data.get("transactionCount", 0), "totalBalance": data.get("totalBalanceDollars", 0), "spending": data.get("spendingDollars", 0), "income": data.get("incomeDollars", 0), "topCategories": data.get("topCategories", [])[:5], "month": data.get("month", "")}
         except Exception as e:
-            pass
+            print(f"[Dashboard] Budget fetch error: {e}")
         return None
 
     def fetch_reader(app):

gateway/database.py

@@ -2,9 +2,10 @@
 Platform Gateway — Database initialization and access.
 """
 
-import hashlib
 import sqlite3
 
+import bcrypt
+
 from config import (
     DB_PATH, TRIPS_URL, FITNESS_URL, INVENTORY_URL,
     MINIFLUX_URL, SHELFMARK_URL, SPOTIZERR_URL, BUDGET_URL,
@@ -124,7 +125,7 @@ def init_db():
     # Seed default admin user if empty
     user_count = c.execute("SELECT COUNT(*) FROM users").fetchone()[0]
     if user_count == 0:
-        pw_hash = hashlib.sha256("admin".encode()).hexdigest()
+        pw_hash = bcrypt.hashpw("admin".encode(), bcrypt.gensalt()).decode()
         c.execute("INSERT INTO users (username, password_hash, display_name) VALUES (?, ?, ?)",
                   ("admin", pw_hash, "Yusuf"))
         conn.commit()

gateway/integrations/booklore.py

@@ -5,12 +5,12 @@ Platform Gateway — Booklore integration (book library manager).
 import json
 import time
 
-from config import (
+from config import BOOKLORE_URL, BOOKLORE_USER, BOOKLORE_PASS, BOOKLORE_BOOKS_DIR
-    BOOKLORE_URL, BOOKLORE_USER, BOOKLORE_PASS,
-    BOOKLORE_BOOKS_DIR, _booklore_token,
-)
 from proxy import proxy_request
 
+# Mutable auth token state (not in config — config is for immutable values)
+_booklore_token = {"access": "", "refresh": "", "expires": 0}
+
 
 def booklore_auth():
     """Get a valid Booklore JWT token, refreshing if needed."""

gateway/integrations/qbittorrent.py

@@ -3,21 +3,18 @@ Platform Gateway — qBittorrent integration (download status).
 """
 
 import json
-import os
 import urllib.request
 import urllib.parse
 
+from config import QBITTORRENT_HOST, QBITTORRENT_PORT, QBITTORRENT_USERNAME, QBITTORRENT_PASSWORD
+
 
 def handle_downloads_status(handler):
     """Get active downloads from qBittorrent."""
-    qbt_host = os.environ.get("QBITTORRENT_HOST", "192.168.1.42")
+    base = f"http://{QBITTORRENT_HOST}:{QBITTORRENT_PORT}"
-    qbt_port = os.environ.get("QBITTORRENT_PORT", "8080")
-    qbt_user = os.environ.get("QBITTORRENT_USERNAME", "admin")
-    qbt_pass = os.environ.get("QBITTORRENT_PASSWORD", "")
-    base = f"http://{qbt_host}:{qbt_port}"
     try:
         # Login
-        login_data = urllib.parse.urlencode({"username": qbt_user, "password": qbt_pass}).encode()
+        login_data = urllib.parse.urlencode({"username": QBITTORRENT_USERNAME, "password": QBITTORRENT_PASSWORD}).encode()
         req = urllib.request.Request(f"{base}/api/v2/auth/login", data=login_data)
         with urllib.request.urlopen(req, timeout=5) as resp:
             cookie = resp.headers.get("Set-Cookie", "").split(";")[0]

gateway/server.py

@@ -8,7 +8,9 @@ This file is thin routing only. All logic lives in submodules.
 
 import json
 from datetime import datetime
-from http.server import HTTPServer, BaseHTTPRequestHandler
+from http.server import BaseHTTPRequestHandler
+from socketserver import ThreadingMixIn
+from http.server import HTTPServer
 
 from config import (
     PORT, TRIPS_API_TOKEN, KINDLE_EMAIL_1, KINDLE_EMAIL_2,
@@ -337,7 +339,10 @@ def main():
     print(f"[Gateway] Services: {_proxy_module.SERVICE_MAP}")
     print(f"[Gateway] Listening on port {PORT}")
 
-    server = HTTPServer(("0.0.0.0", PORT), GatewayHandler)
+    class ThreadingHTTPServer(ThreadingMixIn, HTTPServer):
+        daemon_threads = True
+
+    server = ThreadingHTTPServer(("0.0.0.0", PORT), GatewayHandler)
     server.serve_forever()