Add USB backup system with CRC32 verification
**USB Backup Features:** - Automatic backup to multiple USB drives - CRC32 checksum verification for data integrity - Configurable backup paths in config.json - Backup on write (recordings and greeting uploads) - Corrupted backups automatically deleted - Web interface for monitoring and testing **Configuration:** - Added backup section to config.example.json - enabled: Enable/disable USB backup - usb_paths: Array of USB mount points - verify_crc: Enable CRC32 verification - backup_on_write: Backup immediately after file write **CRC32 Implementation:** - calculate_crc32(): Compute file checksum - 64KB chunk reading for memory efficiency - Source and destination file verification - Automatic cleanup of failed copies **Backup Functions:** - backup_file_to_usb(): Backup with verification - get_usb_backup_status(): Check drive status - Mount detection, write test, free space check - Preserves directory structure on USB **Web Interface:** - USB Backup card with drive status display - Green/Yellow/Red status indicators - Free space monitoring - Test backup button - Real-time status refresh - Detailed error reporting **Integration:** - Recordings backed up after save - Greetings backed up after upload - Backup results logged to console - Non-blocking backup execution **API Endpoints:** - GET /api/backup/status - Drive status - POST /api/backup/test - Test backup **Documentation:** - Complete USB backup guide in README - Mount instructions for USB drives - CRC verification explanation - Backup directory structure - Web interface usage guide 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
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@@ -16,6 +16,8 @@ from flask import Flask, render_template, request, send_file, jsonify, redirect,
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from werkzeug.utils import secure_filename
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import json
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import sys
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import zlib
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import shutil
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# Load configuration
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def load_system_config():
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@@ -65,6 +67,13 @@ SOUNDS_DIR = os.path.join(BASE_DIR, SYS_CONFIG['paths']['sounds_dir'])
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USER_CONFIG_FILE = os.path.join(BASE_DIR, "user_config.json") # Runtime user settings
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DIALTONE_FILE = os.path.join(SOUNDS_DIR, "dialtone.wav")
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# Backup Configuration
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BACKUP_CONFIG = SYS_CONFIG.get('backup', {})
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BACKUP_ENABLED = BACKUP_CONFIG.get('enabled', False)
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BACKUP_USB_PATHS = BACKUP_CONFIG.get('usb_paths', [])
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BACKUP_VERIFY_CRC = BACKUP_CONFIG.get('verify_crc', True)
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BACKUP_ON_WRITE = BACKUP_CONFIG.get('backup_on_write', True)
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# Web server settings
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WEB_PORT = SYS_CONFIG['web']['port']
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@@ -72,6 +81,130 @@ WEB_PORT = SYS_CONFIG['web']['port']
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app = Flask(__name__)
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app.config['MAX_CONTENT_LENGTH'] = SYS_CONFIG['web']['max_upload_size_mb'] * 1024 * 1024
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# Backup and CRC Functions
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def calculate_crc32(filepath):
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"""Calculate CRC32 checksum of a file"""
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try:
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with open(filepath, 'rb') as f:
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checksum = 0
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while chunk := f.read(65536): # Read in 64KB chunks
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checksum = zlib.crc32(chunk, checksum)
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return checksum & 0xFFFFFFFF
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except Exception as e:
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print(f"Error calculating CRC for {filepath}: {e}")
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return None
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def backup_file_to_usb(source_file, relative_path):
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"""
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Backup a file to all configured USB drives with CRC verification
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Args:
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source_file: Full path to source file
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relative_path: Relative path from base dir (e.g., 'recordings/file.wav')
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Returns:
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dict: Status of each USB backup attempt
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"""
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if not BACKUP_ENABLED or not BACKUP_ON_WRITE:
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return {"enabled": False}
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if not os.path.exists(source_file):
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return {"error": f"Source file not found: {source_file}"}
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# Calculate source CRC if verification is enabled
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source_crc = None
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if BACKUP_VERIFY_CRC:
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source_crc = calculate_crc32(source_file)
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if source_crc is None:
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return {"error": "Failed to calculate source CRC"}
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results = {}
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for usb_path in BACKUP_USB_PATHS:
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usb_name = os.path.basename(usb_path)
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# Check if USB is mounted
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if not os.path.exists(usb_path) or not os.path.ismount(usb_path):
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results[usb_name] = {"status": "not_mounted", "path": usb_path}
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continue
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try:
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# Create backup directory structure
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backup_dir = os.path.join(usb_path, "wedding-phone-backup")
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dest_dir = os.path.join(backup_dir, os.path.dirname(relative_path))
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os.makedirs(dest_dir, exist_ok=True)
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# Copy file
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dest_file = os.path.join(backup_dir, relative_path)
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shutil.copy2(source_file, dest_file)
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# Verify CRC if enabled
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if BACKUP_VERIFY_CRC:
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dest_crc = calculate_crc32(dest_file)
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if dest_crc != source_crc:
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results[usb_name] = {
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"status": "crc_mismatch",
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"path": dest_file,
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"source_crc": hex(source_crc),
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"dest_crc": hex(dest_crc) if dest_crc else None
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}
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# Delete corrupted backup
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try:
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os.remove(dest_file)
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except:
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pass
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continue
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results[usb_name] = {
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"status": "success",
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"path": dest_file,
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"crc": hex(source_crc) if source_crc else None
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}
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except Exception as e:
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results[usb_name] = {"status": "error", "error": str(e)}
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return results
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def get_usb_backup_status():
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"""Get status of all configured USB backup drives"""
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status = {
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"enabled": BACKUP_ENABLED,
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"verify_crc": BACKUP_VERIFY_CRC,
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"backup_on_write": BACKUP_ON_WRITE,
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"drives": []
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}
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for usb_path in BACKUP_USB_PATHS:
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drive_info = {
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"path": usb_path,
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"name": os.path.basename(usb_path),
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"mounted": os.path.exists(usb_path) and os.path.ismount(usb_path),
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"writable": False,
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"free_space": None
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}
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if drive_info["mounted"]:
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try:
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# Check if writable
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test_file = os.path.join(usb_path, ".wedding_phone_test")
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with open(test_file, 'w') as f:
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f.write("test")
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os.remove(test_file)
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drive_info["writable"] = True
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# Get free space
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stat = os.statvfs(usb_path)
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drive_info["free_space"] = stat.f_bavail * stat.f_frsize
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drive_info["free_space_mb"] = drive_info["free_space"] / (1024 * 1024)
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except Exception as e:
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drive_info["error"] = str(e)
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status["drives"].append(drive_info)
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return status
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class RotaryPhone:
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def __init__(self):
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self.audio = pyaudio.PyAudio()
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@@ -306,6 +439,12 @@ class RotaryPhone:
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wf.writeframes(b''.join(frames))
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wf.close()
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print(f"Recording saved: {filename} ({duration:.1f}s)")
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# Backup to USB drives if enabled
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if BACKUP_ENABLED:
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relative_path = os.path.join(SYS_CONFIG['paths']['recordings_dir'], os.path.basename(filename))
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backup_results = backup_file_to_usb(filename, relative_path)
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print(f"Backup results: {backup_results}")
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else:
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# Delete aborted/too short recording
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if os.path.exists(filename):
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@@ -513,6 +652,33 @@ def api_set_greeting_delay():
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new_delay = phone.set_greeting_delay(delay)
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return jsonify({"success": True, "delay": new_delay})
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@app.route('/api/backup/status', methods=['GET'])
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def api_backup_status():
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"""Get USB backup drive status"""
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return jsonify(get_usb_backup_status())
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@app.route('/api/backup/test', methods=['POST'])
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def api_backup_test():
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"""Test backup to all USB drives"""
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try:
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# Create a test file
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test_file = os.path.join(OUTPUT_DIR, ".backup_test.txt")
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with open(test_file, 'w') as f:
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f.write(f"Backup test at {datetime.now()}")
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# Try to backup
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results = backup_file_to_usb(test_file, os.path.join(SYS_CONFIG['paths']['recordings_dir'], ".backup_test.txt"))
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# Clean up test file
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try:
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os.remove(test_file)
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except:
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pass
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return jsonify({"success": True, "results": results})
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except Exception as e:
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return jsonify({"success": False, "error": str(e)}), 500
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@app.route('/upload_greeting', methods=['POST'])
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def upload_greeting():
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"""Upload a new greeting message"""
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@@ -537,6 +703,12 @@ def upload_greeting():
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filepath = os.path.join(SOUNDS_DIR, filename)
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file.save(filepath)
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# Backup to USB drives if enabled
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if BACKUP_ENABLED:
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relative_path = os.path.join(SYS_CONFIG['paths']['sounds_dir'], filename)
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backup_results = backup_file_to_usb(filepath, relative_path)
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print(f"Greeting backup results: {backup_results}")
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return jsonify({"success": True, "message": f"Greeting '{filename}' uploaded successfully", "filename": filename})
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return jsonify({"error": "Only WAV files are supported"}), 400
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@@ -1284,7 +1456,33 @@ if __name__ == "__main__":
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</div>
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{% endif %}
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</div>
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<!-- USB Backup Card -->
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<div class="card">
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<h2>💾 USB Backup</h2>
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<div style="padding: 20px;">
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<div style="display: flex; justify-content: space-between; align-items: center; margin-bottom: 15px;">
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<div>
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<p style="margin: 0; color: #6b7280; font-size: 0.9em;">
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Automatic backup to USB drives with CRC verification
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</p>
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</div>
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<button class="btn btn-primary" onclick="refreshBackupStatus()">🔄 Refresh</button>
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</div>
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<div id="backup-status-container">
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<p style="text-align: center; color: #6b7280;">Loading backup status...</p>
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</div>
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<div style="margin-top: 20px; text-align: center;">
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<button class="btn btn-success" onclick="testBackup()">
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🧪 Test Backup
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</button>
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</div>
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</div>
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</div>
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<!-- Recordings Card -->
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<div class="card">
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<h2>🎙️ Recordings</h2>
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@@ -1633,16 +1831,116 @@ if __name__ == "__main__":
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const alertDiv = document.createElement('div');
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alertDiv.className = 'alert alert-' + type;
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alertDiv.textContent = message;
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const container = document.getElementById('alert-container');
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container.innerHTML = '';
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container.appendChild(alertDiv);
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setTimeout(() => {
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alertDiv.remove();
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}, 5000);
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}
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// USB Backup Functions
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function refreshBackupStatus() {
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fetch('/api/backup/status')
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.then(response => response.json())
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.then(data => {
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displayBackupStatus(data);
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})
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.catch(error => console.error('Error fetching backup status:', error));
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}
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function displayBackupStatus(data) {
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const container = document.getElementById('backup-status-container');
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if (!data.enabled) {
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container.innerHTML = `
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<div class="alert alert-warning">
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⚠️ USB backup is disabled in configuration
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</div>
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`;
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return;
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}
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let html = `
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<div style="margin-bottom: 15px;">
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<p style="margin: 5px 0;"><strong>CRC Verification:</strong> ${data.verify_crc ? '✅ Enabled' : '❌ Disabled'}</p>
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<p style="margin: 5px 0;"><strong>Backup on Write:</strong> ${data.backup_on_write ? '✅ Enabled' : '❌ Disabled'}</p>
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</div>
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<div style="display: grid; gap: 15px;">
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`;
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data.drives.forEach(drive => {
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let statusColor = '#dc2626'; // red
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let statusIcon = '❌';
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let statusText = 'Not Mounted';
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if (drive.mounted) {
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if (drive.writable) {
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statusColor = '#16a34a'; // green
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statusIcon = '✅';
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statusText = 'Ready';
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} else {
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statusColor = '#ea580c'; // orange
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statusIcon = '⚠️';
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statusText = 'Not Writable';
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}
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}
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html += `
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<div style="border: 2px solid ${statusColor}; border-radius: 8px; padding: 15px; background: ${statusColor}15;">
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<div style="display: flex; justify-content: space-between; align-items: center;">
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<div>
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<p style="margin: 0; font-weight: bold; font-size: 1.1em;">${statusIcon} ${drive.name}</p>
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<p style="margin: 5px 0 0 0; color: #6b7280; font-size: 0.85em;">${drive.path}</p>
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</div>
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<div style="text-align: right;">
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<p style="margin: 0; font-weight: bold; color: ${statusColor};">${statusText}</p>
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${drive.free_space_mb ? `<p style="margin: 5px 0 0 0; color: #6b7280; font-size: 0.85em;">${drive.free_space_mb.toFixed(0)} MB free</p>` : ''}
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</div>
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</div>
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${drive.error ? `<p style="margin: 10px 0 0 0; color: #dc2626; font-size: 0.85em;">Error: ${drive.error}</p>` : ''}
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</div>
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`;
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});
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html += '</div>';
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container.innerHTML = html;
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}
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function testBackup() {
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const btn = event.target;
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btn.disabled = true;
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btn.textContent = '🔄 Testing...';
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fetch('/api/backup/test', {
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method: 'POST'
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})
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.then(response => response.json())
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.then(data => {
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if (data.success) {
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showAlert('Backup test completed. Check console for results.', 'success');
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console.log('Backup test results:', data.results);
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} else {
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showAlert('Backup test failed: ' + data.error, 'error');
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}
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btn.disabled = false;
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btn.textContent = '🧪 Test Backup';
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refreshBackupStatus();
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})
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.catch(error => {
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showAlert('Backup test error: ' + error, 'error');
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btn.disabled = false;
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btn.textContent = '🧪 Test Backup';
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});
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}
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// Load backup status on page load
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document.addEventListener('DOMContentLoaded', function() {
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refreshBackupStatus();
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});
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// Auto-refresh status every 5 seconds
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setInterval(() => {
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fetch('/api/status')
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