Rust

How to Generate an Azure Storage Account Shared Access Signature (SAS)

See more Azure Cloud Storage Examples

Shows how to generate a Shared Access Signature (SAS) for an Azure Storage Account.

Note: This example requires Chilkat v9.5.0.65 or greater.

Rust

// Note: Requires Chilkat v9.5.0.65 or greater.

// This requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// --------------------------------------------------------------------------
// Create a Shared Access Signature (SAS) token for an Azure Storage Account.
// --------------------------------------------------------------------------

// See https://docs.microsoft.com/en-us/rest/api/storageservices/fileservices/constructing-an-account-sas 
// for details regarding the Azure Storage Account SAS fields.

let auth_sas = chilkat::AuthAzureSAS::new();
auth_sas.set_access_key("AZURE_ACCESS_KEY");

// Specify the format of the string to sign.
// Each comma character in the following string represents a LF ("\n") character.
// The names specified in the StringToSign are replaced with the values specified
// in the subsequent calls to SetTokenParam and SetNonTokenParam,.

// Note: The trailing comma in the StringToSign is intentional and important. This indicates that the 
// string to sign will end with a "\n".

// Also note: The names in the StringToSign are case sensitive.  The names
// specified in the 1st argument in the calls to SetNonTokenParam and SetTokenParam should
// match a name listed in StringToSign. 
auth_sas.set_string_to_sign("accountname,signedpermissions,signedservice,signedresourcetype,signedstart,signedexpiry,signedIP,signedProtocol,signedversion,");

//  The account name is "chilkat".  Use your own account name instead of "chilkat".
//  Also use your own container name instead of "mycontainer".
let _ = auth_sas.set_non_token_param("accountname", "chilkat");

let _ = auth_sas.set_token_param("signedpermissions", "sp", "rwdlacup");
let _ = auth_sas.set_token_param("signedservice", "ss", "bfqt");
let _ = auth_sas.set_token_param("signedresourcetype", "srt", "sco");

let dt = chilkat::DateTime::new();
let _ = dt.set_from_current_system_time();
let _ = auth_sas.set_token_param("signedstart", "st", &dt.get_as_iso8601("YYYY-MM-DDThh:mmTZD", false).unwrap_or_default());

// This SAS token will be valid for 30 days.
let _ = dt.add_days(30);
let _ = auth_sas.set_token_param("signedexpiry", "se", &dt.get_as_iso8601("YYYY-MM-DDThh:mmTZD", false).unwrap_or_default());

let _ = auth_sas.set_token_param("signedProtocol", "spr", "https");

//  Specifiy values and query param names for each field.
//  If a field is not specified, then an empty string will be used for its value.
let _ = auth_sas.set_token_param("signedversion", "sv", "2015-04-05");

// Note that we did not call SetTokenParam for "signedIP".  For any omitted fields
// the value will default to the empty string.

// Generate the SAS token.
let Ok(sas_token) = auth_sas.generate_token() else {
    println!("{}", auth_sas.last_error_text());
    return;
};

println!("SAS token: {}", sas_token);

// Save the SAS token to a file.
// We can then use this pre-generated token for future Azure Storage Account operations.
let fac = chilkat::FileAccess::new();
let _ = fac.write_entire_text_file("qa_data/tokens/azureStorageAccountSas.txt", &sas_token, "utf-8", false);