(PowerShell) 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 .NET Downloads Chilkat .NET Assemblies

Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

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

$consumerKey = "ETRADE_CONSUMER_KEY"
$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:
$requestTokenUrl = "https://apisb.etrade.com/oauth/request_token"

$http = New-Object Chilkat.Http
$success = $true

$http.OAuth1 = $true
$http.OAuthConsumerKey = $consumerKey
$http.OAuthConsumerSecret = $consumerSecret
$http.OAuthCallback = "oob"

$resp = $http.QuickGetObj($requestTokenUrl)
if ($http.LastMethodSuccess -ne $true) {
    $($http.LastErrorText)
    exit
}

# If successful, the resp.BodyStr contains something like this:  
# oauth_token=-Wa_KwAAAAAAxfEPAAABV8Qar4Q&oauth_token_secret=OfHY4tZBX2HK4f7yIw76WYdvnl99MVGB&oauth_callback_confirmed=true
$($resp.BodyStr)

$hashTab = New-Object Chilkat.Hashtable
$hashTab.AddQueryParams($resp.BodyStr)

$requestToken = $hashTab.LookupStr("oauth_token")
$requestTokenSecret = $hashTab.LookupStr("oauth_token_secret")
$http.OAuthTokenSecret = $requestTokenSecret

$("oauth_token = " + $requestToken)
$("oauth_token_secret = " + $requestTokenSecret)

# Save this request token for the next step..
$json = New-Object Chilkat.JsonObject
$json.AppendString("oauth_token",$requestToken)
$json.AppendString("oauth_token_secret",$requestTokenSecret)

$fac = New-Object Chilkat.FileAccess
$fac.WriteEntireTextFile("qa_data/tokens/etrade_request_token.json",$json.Emit(),"utf-8",$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.
$authorizeUrl = "https://us.etrade.com/e/t/etws/authorize"

$sbUrlForBrowser = New-Object Chilkat.StringBuilder
$sbUrlForBrowser.Append($authorizeUrl)
$sbUrlForBrowser.Append("?key=")
$sbUrlForBrowser.Append($consumerKey)
$sbUrlForBrowser.Append("&token=")
$sbUrlForBrowser.Append($requestToken)
$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.

#