(PowerBuilder) ETrade OAuth1 Authorization (3-legged) Step 2

Demonstrates the final step in 3-legged OAuth1 authorization for the ETrade REST API. Example uses the OAuth1 verifier code that was copy-and-pasted from the browser in the 1st step. The end result of this final OAuth1 step is an access token that can be used to make ETrade REST API calls.

See https://apisb.etrade.com/docs/api/authorization/get_access_token.html

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

integer li_rc
string ls_ConsumerKey
string ls_ConsumerSecret
string ls_RequestTokenUrl
string ls_AuthorizeUrl
string ls_AccessTokenUrl
oleobject loo_Http
integer li_Success
oleobject loo_JsonRequestToken
string ls_RequestToken
string ls_RequestTokenSecret
oleobject loo_Resp
oleobject loo_HashTab
string ls_AccessToken
string ls_AccessTokenSecret
oleobject loo_Json
oleobject loo_Fac

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

ls_ConsumerKey = "ETRADE_CONSUMER_KEY"
ls_ConsumerSecret = "ETRADE_CONSUMER_SECRET"

ls_RequestTokenUrl = "https://apisb.etrade.com/oauth/request_token"
ls_AuthorizeUrl = "https://us.etrade.com/e/t/etws/authorize"
ls_AccessTokenUrl = "https://apisb.etrade.com/oauth/access_token"

loo_Http = create oleobject
// Use "Chilkat_9_5_0.Http" for versions of Chilkat < 10.0.0
li_rc = loo_Http.ConnectToNewObject("Chilkat.Http")
if li_rc < 0 then
    destroy loo_Http
    MessageBox("Error","Connecting to COM object failed")
    return
end if
li_Success = 1

loo_Http.OAuth1 = 1
loo_Http.OAuthConsumerKey = ls_ConsumerKey
loo_Http.OAuthConsumerSecret = ls_ConsumerSecret
loo_Http.OAuthCallback = "oob"

loo_JsonRequestToken = create oleobject
// Use "Chilkat_9_5_0.JsonObject" for versions of Chilkat < 10.0.0
li_rc = loo_JsonRequestToken.ConnectToNewObject("Chilkat.JsonObject")

li_Success = loo_JsonRequestToken.LoadFile("qa_data/tokens/etrade_request_token.json")
ls_RequestToken = loo_JsonRequestToken.StringOf("oauth_token")
ls_RequestTokenSecret = loo_JsonRequestToken.StringOf("oauth_token_secret")

// ------------------------------------------------------------------------------
// Exchange the OAuth Request Token for an OAuth Access Token.

loo_Http.OAuthToken = ls_RequestToken
loo_Http.OAuthTokenSecret = ls_RequestTokenSecret

// This is the verifier that was interactively copy-and-pasted from the browser back to our app.
loo_Http.OAuthVerifier = "NJ07S"

loo_Resp = loo_Http.QuickGetObj(ls_AccessTokenUrl)
if loo_Http.LastMethodSuccess <> 1 then
    Write-Debug loo_Http.LastErrorText
    destroy loo_Http
    destroy loo_JsonRequestToken
    return
end if

// Make sure a successful response was received.
if loo_Resp.StatusCode <> 200 then
    Write-Debug loo_Resp.StatusLine
    Write-Debug loo_Resp.Header
    Write-Debug loo_Resp.BodyStr
    destroy loo_Http
    destroy loo_JsonRequestToken
    return
end if

// If successful, the resp.BodyStr contains something like this:
// oauth_token=85123455-fF41296Bi3daM8eCo9Y5vZabcdxXpRv864plYPOjr&oauth_token_secret=afiYJOgabcdSfGae7BDvJVVTwys8fUGpra5guZxbmFBZo
Write-Debug loo_Resp.BodyStr

loo_HashTab = create oleobject
// Use "Chilkat_9_5_0.Hashtable" for versions of Chilkat < 10.0.0
li_rc = loo_HashTab.ConnectToNewObject("Chilkat.Hashtable")

loo_HashTab.AddQueryParams(loo_Resp.BodyStr)

ls_AccessToken = loo_HashTab.LookupStr("oauth_token")
ls_AccessTokenSecret = loo_HashTab.LookupStr("oauth_token_secret")

destroy loo_Resp

// The access token + secret is what should be saved and used for
// subsequent REST API calls.
Write-Debug "Access Token = " + ls_AccessToken
Write-Debug "Access Token Secret = " + ls_AccessTokenSecret

// Save this access token for future calls.
// Just in case we need user_id and screen_name, save those also..
loo_Json = create oleobject
// Use "Chilkat_9_5_0.JsonObject" for versions of Chilkat < 10.0.0
li_rc = loo_Json.ConnectToNewObject("Chilkat.JsonObject")

loo_Json.AppendString("oauth_token",ls_AccessToken)
loo_Json.AppendString("oauth_token_secret",ls_AccessTokenSecret)

loo_Fac = create oleobject
// Use "Chilkat_9_5_0.FileAccess" for versions of Chilkat < 10.0.0
li_rc = loo_Fac.ConnectToNewObject("Chilkat.FileAccess")

loo_Fac.WriteEntireTextFile("qa_data/tokens/etrade.json",loo_Json.Emit(),"utf-8",0)

Write-Debug "Success."


destroy loo_Http
destroy loo_JsonRequestToken
destroy loo_HashTab
destroy loo_Json
destroy loo_Fac