refactor: update setup_database.sh for improved PostgreSQL configuration and user creation

setup_database.sh

@@ -1,80 +1,72 @@
-#!/usr/bin/env bash
+#!/bin/bash
 set -e
 
 DB_NAME="mitm_db"
 DB_USER="mitm_user"
-DB_PASS="mitm_pass"
+DB_PASS="mitm_password"
+LAN_SUBNET="192.168.178.0/24"
 
-echo "[+] Installing PostgreSQL..."
-sudo apt-get update -y
-sudo apt-get install -y postgresql postgresql-contrib
+echo "[1] Installing PostgreSQL…"
+sudo apt update -y
+sudo apt install -y postgresql postgresql-contrib
 
-echo "[+] Ensuring PostgreSQL is running..."
-sudo systemctl enable postgresql
-sudo systemctl start postgresql
+echo "[2] Configuring PostgreSQL to listen on all addresses…"
+PG_CONF="/etc/postgresql/$(ls /etc/postgresql)/main/postgresql.conf"
+sudo sed -i "s/^#listen_addresses =.*/listen_addresses = '*'/" "$PG_CONF"
 
-echo "[+] Creating user and database (if missing)..."
+echo "[3] Updating pg_hba.conf for LAN + localhost access…"
+PG_HBA="/etc/postgresql/$(ls /etc/postgresql)/main/pg_hba.conf"
+
+# Ensure localhost entry exists
+if ! grep -q "host *all *all *127.0.0.1/32" "$PG_HBA"; then
+    echo "host    all     all     127.0.0.1/32        md5" | sudo tee -a "$PG_HBA"
+fi
+
+# Ensure LAN entry exists
+if ! grep -q "$LAN_SUBNET" "$PG_HBA"; then
+    echo "host    all     all     $LAN_SUBNET        md5" | sudo tee -a "$PG_HBA"
+fi
+
+echo "[4] Restarting PostgreSQL…"
+sudo systemctl restart postgresql
+
+echo "[5] Creating database and user (if not existing)…"
 sudo -u postgres psql <<EOF
-DO
-\$do\$
+DO \$\$
 BEGIN
-   IF NOT EXISTS (SELECT FROM pg_catalog.pg_roles WHERE rolname = '${DB_USER}') THEN
-      CREATE ROLE ${DB_USER} LOGIN PASSWORD '${DB_PASS}';
+    IF NOT EXISTS (SELECT FROM pg_roles WHERE rolname = '$DB_USER') THEN
+        CREATE USER $DB_USER WITH PASSWORD '$DB_PASS';
+    END IF;
+
+    IF NOT EXISTS (SELECT FROM pg_database WHERE datname = '$DB_NAME') THEN
+        CREATE DATABASE $DB_NAME OWNER $DB_USER;
     END IF;
 END
-\$do\$;
-
-CREATE DATABASE ${DB_NAME} OWNER ${DB_USER}
-    TEMPLATE template0
-    ENCODING 'UTF8'
-    LC_COLLATE='C'
-    LC_CTYPE='C'
-    CONNECTION LIMIT -1;
-
--- ignore errors if DB already exists
-ALTER DATABASE ${DB_NAME} OWNER TO ${DB_USER};
+\$\$;
 EOF
 
-echo "[+] Creating tables (idempotent)..."
-sudo -u postgres psql -d ${DB_NAME} <<EOF
-
-CREATE TABLE IF NOT EXISTS packets (
+echo "[6] Creating tables (idempotent)…"
+sudo -u postgres psql -d $DB_NAME <<EOF
+CREATE TABLE IF NOT EXISTS packet_log (
     id BIGSERIAL PRIMARY KEY,
     timestamp TIMESTAMPTZ DEFAULT NOW(),
-
-    direction VARCHAR(16) NOT NULL,
-    iface VARCHAR(32) NOT NULL,
-
-    src_mac VARCHAR(17),
-    dst_mac VARCHAR(17),
-
-    eth_type VARCHAR(8),
-
+    direction VARCHAR(16),          -- ingress / egress
+    interface VARCHAR(32),
+    src_mac VARCHAR(32),
+    dst_mac VARCHAR(32),
+    eth_type VARCHAR(16),
     src_ip VARCHAR(64),
     dst_ip VARCHAR(64),
-    ip_proto VARCHAR(16),
-
-    src_port INT,
-    dst_port INT,
-
-    packet_len INT,
-    packet_hex TEXT
-);
-
-CREATE TABLE IF NOT EXISTS nft_events (
-    id BIGSERIAL PRIMARY KEY,
-    timestamp TIMESTAMPTZ DEFAULT NOW(),
-    packet_id BIGINT REFERENCES packets(id) ON DELETE CASCADE,
-
-    hook VARCHAR(64),
+    ip_protocol VARCHAR(16),
+    src_port INTEGER,
+    dst_port INTEGER,
+    packet_len INTEGER,
+    nft_hook VARCHAR(32),
     nft_table VARCHAR(64),
     nft_chain VARCHAR(64),
-    nft_rule VARCHAR(256),
-    verdict VARCHAR(32)
+    nft_verdict VARCHAR(32),
+    raw_packet BYTEA
 );
 EOF
 
-echo "[+] DONE!"
-echo "Database: ${DB_NAME}"
-echo "User:     ${DB_USER}"
-echo "Password: ${DB_PASS}"
+echo "Done. PostgreSQL is ready for LAN + localhost connections."