Chilkat Examples

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Objective-C Web API Examples

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(Objective-C) ETrade OAuth1 Authorization (3-legged) Step 1

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".

Chilkat Objective-C Library Downloads

MAC OS X (Cocoa) Libs

iOS Libs

#import <NSString.h>
#import <CkoHttp.h>
#import <CkoHttpResponse.h>
#import <CkoHashtable.h>
#import <CkoJsonObject.h>
#import <CkoFileAccess.h>
#import <CkoStringBuilder.h>

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

NSString *consumerKey = @"ETRADE_CONSUMER_KEY";
NSString *consumerSecret = @"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:
NSString *requestTokenUrl = @"https://apisb.etrade.com/oauth/request_token";

CkoHttp *http = [[CkoHttp alloc] init];
BOOL success = YES;

http.OAuth1 = YES;
http.OAuthConsumerKey = consumerKey;
http.OAuthConsumerSecret = consumerSecret;
http.OAuthCallback = @"oob";

CkoHttpResponse *resp = [http QuickGetObj: requestTokenUrl];
if (http.LastMethodSuccess != YES) {
    NSLog(@"%@",http.LastErrorText);
    return;
}

// If successful, the resp.BodyStr contains something like this:  
// oauth_token=-Wa_KwAAAAAAxfEPAAABV8Qar4Q&oauth_token_secret=OfHY4tZBX2HK4f7yIw76WYdvnl99MVGB&oauth_callback_confirmed=true
NSLog(@"%@",resp.BodyStr);

CkoHashtable *hashTab = [[CkoHashtable alloc] init];
[hashTab AddQueryParams: resp.BodyStr];

NSString *requestToken = [hashTab LookupStr: @"oauth_token"];
NSString *requestTokenSecret = [hashTab LookupStr: @"oauth_token_secret"];
http.OAuthTokenSecret = requestTokenSecret;

NSLog(@"%@%@",@"oauth_token = ",requestToken);
NSLog(@"%@%@",@"oauth_token_secret = ",requestTokenSecret);

// Save this request token for the next step..
CkoJsonObject *json = [[CkoJsonObject alloc] init];
[json AppendString: @"oauth_token" value: requestToken];
[json AppendString: @"oauth_token_secret" value: requestTokenSecret];

CkoFileAccess *fac = [[CkoFileAccess alloc] init];
[fac WriteEntireTextFile: @"qa_data/tokens/etrade_request_token.json" fileData: [json Emit] charset: @"utf-8" includePreamble: NO];

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

// 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.
NSString *authorizeUrl = @"https://us.etrade.com/e/t/etws/authorize";

CkoStringBuilder *sbUrlForBrowser = [[CkoStringBuilder alloc] init];
[sbUrlForBrowser Append: authorizeUrl];
[sbUrlForBrowser Append: @"?key="];
[sbUrlForBrowser Append: consumerKey];
[sbUrlForBrowser Append: @"&token="];
[sbUrlForBrowser Append: requestToken];
NSString *url = [sbUrlForBrowser GetAsString];

// At this point, your application should load the URL in a browser.
// For example, 
// in C#: System.Diagnostics.Process.Start(url);
// in Java: Desktop.getDesktop().browse(new URI(url));
// in VBScript: Set wsh=WScript.CreateObject("WScript.Shell")
//              wsh.Run url
// in Xojo: ShowURL(url)  (see http://docs.xojo.com/index.php/ShowURL)
// in Dataflex: Runprogram Background "c:\Program Files\Internet Explorer\iexplore.exe" sUrl        
// The Microsoft account owner would interactively accept or deny the authorization request.

// Add the code to load the url in a web browser here...
// Add the code to load the url in a web browser here...
// Add the code to load the url in a web browser here...

// 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.

// 
 

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