Download Rhel-server-7.9-x86-64-dvd.iso [ 2027 ]

return total_size def verify_checksum(file_path, expected_sha256): sha256 = hashlib.sha256() with open(file_path, "rb") as f: for chunk in iter(lambda: f.read(4096), b""): sha256.update(chunk) actual = sha256.hexdigest() if actual != expected_sha256: raise Exception(f"Checksum mismatch: expected {expected_sha256}, got {actual}") print("Checksum verified successfully.")

def save_config(username): with open(CONFIG_FILE, "w") as f: json.dump({"username": username}, f) os.chmod(CONFIG_FILE, 0o600)

raise Exception(f"Could not find {iso_filename} on download page") def download_with_resume(url, output_path, session): headers = {} resume_pos = 0

def find_iso_download_url(session): """Scrape or API-call to find actual rhel-server-7.9-x86_64-dvd.iso download URL""" # This simulates using the Red Hat download API; real implementation requires # navigating the /content/origin/files/sha256/... endpoint # For demonstration, we use a direct authenticated download link pattern. # You will need to replace with actual Red Hat retrieval logic. download rhel-server-7.9-x86-64-dvd.iso

# Step 1: Get download URL print("Locating RHEL 7.9 DVD ISO...") try: iso_url = find_iso_download_url(session) except Exception as e: print(f"Error: {e}") print("\nNote: RHEL ISOs require an active subscription.") print("You can download manually from: https://access.redhat.com/downloads") sys.exit(1)

def main(): username, password = get_credentials() session = requests.Session() session.auth = (username, password)

mode = "ab" if resume_pos else "wb" with open(output_path, mode) as f, tqdm( desc=output_path, total=total_size, unit="B", unit_scale=True, initial=resume_pos, leave=True ) as pbar: for chunk in resp.iter_content(chunk_size=8192): if chunk: f.write(chunk) pbar.update(len(chunk)) # Step 1: Get download URL print("Locating RHEL 7

This is a nuanced request because is not publicly downloadable without a subscription.

# Step 2: Download output_file = f"rhel-server-{RHEL_VERSION}-{ARCH}-dvd.iso" print(f"Downloading to {output_file}") download_with_resume(iso_url, output_file, session)

download_page = "https://access.redhat.com/downloads/content/69/ver=/rhel---7/7.9/x86_64/product-software" resp = session.get(download_page) if resp.status_code != 200: raise Exception("Failed to access download page") 0)) + resume_pos

# Step 3: Checksum (optional, you'd fetch expected SHA from Red Hat) # expected_sha = "..." # fetch from metadata # verify_checksum(output_file, expected_sha)

# This is a placeholder - real Red Hat URLs require token & SHA256 path # In practice, use: https://access.redhat.com/downloads/content/69/ver=/rhel---7/7.9/x86_64/product-software # Then parse for the DVD ISO link.

However, I can give you a (script + logic) that handles the process cleanly if you have valid Red Hat credentials — and provides clear guidance if you don’t.

if os.path.exists(output_path): resume_pos = os.path.getsize(output_path) headers["Range"] = f"bytes={resume_pos}-"

resp = session.get(url, stream=True, headers=headers) total_size = int(resp.headers.get("content-length", 0)) + resume_pos