Add setup_fingerprint_check/src/setup_fingerprint_check/core.py

setup_fingerprint_check/src/setup_fingerprint_check/core.py

@@ -0,0 +1,57 @@
+import hashlib
+import os
+import sys
+import platform
+from typing import Dict
+
+
+def _collect_system_info() -> Dict[str, str]:
+    """Sammelt relevante Systeminformationen zur Fingerprint-Bildung."""
+    info = {
+        "platform": platform.system(),
+        "platform_release": platform.release(),
+        "platform_version": platform.version(),
+        "python_version": platform.python_version(),
+        "executable": sys.executable,
+        "uname": str(os.uname()) if hasattr(os, 'uname') else 'N/A',
+    }
+    return info
+
+
+def _generate_fingerprint(info: Dict[str, str]) -> str:
+    """Generiert einen SHA256-Fingerprint basierend auf Systeminformationen."""
+    fingerprint_source = "|".join(f"{k}={v}" for k, v in sorted(info.items()))
+    return hashlib.sha256(fingerprint_source.encode('utf-8')).hexdigest()
+
+
+def check_setup_fingerprint(expected_fingerprint: str) -> bool:
+    """Vergleicht den aktuellen Setup-Fingerprint mit dem erwarteten Fingerprint.
+
+    Args:
+        expected_fingerprint (str): Referenzwert des erwarteten Setup-Fingerprints.
+
+    Returns:
+        bool: True, wenn der aktuelle Fingerprint mit dem erwarteten übereinstimmt, sonst False.
+    """
+    if not isinstance(expected_fingerprint, str):
+        raise TypeError("expected_fingerprint muss ein String sein.")
+    if not expected_fingerprint.strip():
+        raise ValueError("expected_fingerprint darf nicht leer sein.")
+
+    current_info = _collect_system_info()
+    current_fingerprint = _generate_fingerprint(current_info)
+
+    match = current_fingerprint == expected_fingerprint.strip()
+    return match
+
+
+if __name__ == "__main__":
+    import argparse
+
+    parser = argparse.ArgumentParser(description="Überprüfung des Setup-Fingerprints.")
+    parser.add_argument("--expected", required=True, help="Erwarteter Fingerprint des Test-Setups.")
+    args = parser.parse_args()
+
+    result = check_setup_fingerprint(args.expected)
+    sys.stdout.write("valid\n" if result else "mismatch\n")
+    sys.exit(0 if result else 1)