pdfutils.py 文件源码

def decrypt_pdf(src):
    decrypted = TemporaryFile()
    popen = subprocess.Popen(['qpdf', '--decrypt', '/dev/stdin', '-'],
        stdin=src, stdout=decrypted, stderr=subprocess.PIPE)
    stdout, stderr = popen.communicate()
    if popen.returncode in (0, 3):  # 0 == ok, 3 == warning
        if popen.returncode == 3:
            logger.warn('qpdf warning:\n%s', smart_bytes(stderr, errors='backslashreplace'))
    else:
        from ecs.users.utils import get_current_user
        user = get_current_user()
        logger.warn('qpdf error (returncode=%s):\nUser: %s (%s)\n%s', popen.returncode, user, user.email if user else 'anonymous', smart_bytes(stderr, errors='backslashreplace'))
        raise ValueError('pdf broken')
    decrypted.seek(0)
    return decrypted