Struct SsAccessToken 

#[repr(C)]
pub struct SsAccessToken {
    pub data_size: u32,
    pub data: [u8],
}

Equivalent to ACCESSTOKEN in msodbcsql.h. Value of ConnectionAttribute::SS_ACCESS_TOKEN.

Specific to the Microsoft ODBC Driver for SQL Server. A dynamically sized type: pointers to it are fat and carry the length of data, which must equal data_size. Cast to a thin pointer before passing it to the driver.

See: https://learn.microsoft.com/sql/connect/odbc/using-azure-active-directory#authenticating-with-an-access-token

Fields

data_size: u32

Length of data in bytes. Does not include a terminating zero.

data: [u8]

Flexible array member (BYTE data[] in C). Directly follows data_size.

According to Microsoft, a token obtained from an OAuth 2.0 JSON response must be expanded, so each byte is followed by a zero byte. For the ASCII characters of an access token, this equals UTF-16 with little endian byte order. This holds whether the narrow or wide ODBC functions are used, since the driver manager passes the pointer through unchanged.