Media Download

Download a Specific Message

# Download attachment from a message
openkakao-rs download <chat_id> <log_id>

# Custom output directory
openkakao-rs download <chat_id> <log_id> -o ./media

The log_id can be found in message output or JSON export.

Auto-Download in Watch Mode

Download media automatically as messages arrive:

openkakao-rs watch --download-media --download-dir ./media

Supported Media Types

File Naming

Downloaded files are saved as:

{download_dir}/{chat_id}/{log_id}_{original_filename}

Filenames are sanitized to prevent path traversal attacks — directory components (../), null bytes, and path separators are stripped.

Security

• Download URLs are validated against a Kakao domain allowlist (.kakao.com, .kakaocdn.net)
• Credentials are never sent to non-Kakao domains
• Filenames from the server are sanitized before writing to disk