Swift

ETrade OAuth1 Authorization (3-legged) Step 1

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Demonstrates the first step in 3-legged OAuth1 authorization for the ETrade REST API. This example sends an HTTP request to the "request token URL" to get a request token that begins the OAuth1 process. (See https://apisb.etrade.com/docs/api/authorization/request_token.html )

This example uses the sandbox request token URL. The live request token URL would be "https://api.etrade.com/oauth/request_token".

Swift

func chilkatTest() {
    var success: Bool = false

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

    var consumerKey: String? = "ETRADE_CONSUMER_KEY"
    var consumerSecret: String? = "ETRADE_CONSUMER_SECRET"

    // Note: This example uses the sandbox request token URL.
    // The live Get Request Token Request URL is:
    // https://api.etrade.com/oauth/request_token
    // This example will use the Sandbox Token Request URL:
    var requestTokenUrl: String? = "https://apisb.etrade.com/oauth/request_token"

    let http = CkoHttp()!
    success = true

    http.oAuth1 = true
    http.oAuthConsumerKey = consumerKey
    http.oAuthConsumerSecret = consumerSecret
    http.oAuthCallback = "oob"

    let resp = CkoHttpResponse()!
    success = http.httpNoBody(verb: "GET", url: requestTokenUrl, response: resp)
    if success == false {
        print("\(http.lastErrorText!)")
        return
    }

    // If successful, the resp.BodyStr contains something like this:  
    // oauth_token=-Wa_KwAAAAAAxfEPAAABV8Qar4Q&oauth_token_secret=OfHY4tZBX2HK4f7yIw76WYdvnl99MVGB&oauth_callback_confirmed=true
    print("\(resp.bodyStr!)")

    let hashTab = CkoHashtable()!
    hashTab.addQueryParams(queryParams: resp.bodyStr)

    var requestToken: String? = hashTab.lookupStr(key: "oauth_token")
    var requestTokenSecret: String? = hashTab.lookupStr(key: "oauth_token_secret")
    http.oAuthTokenSecret = requestTokenSecret

    print("oauth_token = \(requestToken!)")
    print("oauth_token_secret = \(requestTokenSecret!)")

    // Save this request token for the next step..
    let json = CkoJsonObject()!
    json.appendString(name: "oauth_token", value: requestToken)
    json.appendString(name: "oauth_token_secret", value: requestTokenSecret)

    let fac = CkoFileAccess()!
    fac.writeEntireTextFile(path: "qa_data/tokens/etrade_request_token.json", fileData: json.emit(), charset: "utf-8", includePreamble: false)

    // ---------------------------------------------------------------------------

    // The next step is to form a URL to send to the authorizeUrl
    // This is an HTTP GET that we load into a popup browser.
    var authorizeUrl: String? = "https://us.etrade.com/e/t/etws/authorize"

    let sbUrlForBrowser = CkoStringBuilder()!
    sbUrlForBrowser.append(value: authorizeUrl)
    sbUrlForBrowser.append(value: "?key=")
    sbUrlForBrowser.append(value: consumerKey)
    sbUrlForBrowser.append(value: "&token=")
    sbUrlForBrowser.append(value: requestToken)
    var url: String? = sbUrlForBrowser.getAsString()

    // Launch the system's default browser navigated to the URL.
    let oauth2 = CkoOAuth2()!
    success = oauth2.launchBrowser(url: url)
    if success == false {
        print("\(oauth2.lastErrorText!)")
        return
    }

    // The ETrade account owner will login and grant access to the application.
    // A short verifier code will be displayed (as shown below), and this must be copy-and-pasted
    // into the next step to Complete the 3-legged OAuth1 Authorization 

    // Note: The browser will NOT automatically direct you to the next page.
    // You should copy the verifier code, close the browser, and then paste the verifier
    // code into your application.

    // 

}