Swift

Configure Azure SAS Authentication for REST

Demonstrates Rest.SetAuthAzureSas, which associates an AuthAzureSAS provider so requests are authorized with an Azure Shared Access Signature token.

Background. A SAS token grants time-limited, permission-scoped access to Azure Storage resources without exposing the account key on the wire. Use SAS authorization when a query-token approach is preferred over Shared Key headers.

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Swift


func chilkatTest() {
    var success: Bool = false

    let rest = CkoRest()!
    var bTls: Bool = true
    var bAutoReconnect: Bool = true
    success = rest.connect(hostname: "example.com", port: 443, tls: bTls, autoReconnect: bAutoReconnect)
    if success == false {
        print("\(rest.lastErrorText!)")
        return
    }

    //  Configure Azure Shared Access Signature (SAS) authentication.  Provide the account access key
    //  and the SAS token query parameters; Chilkat adds the SAS token to each request.
    let azSas = CkoAuthAzureSAS()!
    //  Normally you would not hard-code secrets in source.  You should instead obtain them from an
    //  interactive prompt, environment variable, or a secrets vault.
    azSas.accessKey = "BASE64_ACCOUNT_ACCESS_KEY"

    //  Associate the provider with the REST object.
    success = rest.setAuthAzureSas(authProvider: azSas)
    if success == false {
        print("\(rest.lastErrorText!)")
        return
    }

    var responseText: String? = rest.fullRequestNoBody(httpVerb: "GET", uriPath: "/mycontainer/myblob.txt")
    if rest.lastMethodSuccess == false {
        print("\(rest.lastErrorText!)")
        return
    }

    print("\(responseText!)")

}