(PureBasic) AzureWebsites OAuth2 Password Flow

Demonstrates how to do OAuth 2.0 password flow for azurewebsites.net.

Chilkat PureBasic Module Download Chilkat PureBasic Module

IncludeFile "CkHttpResponse.pb"
IncludeFile "CkHttp.pb"
IncludeFile "CkStringBuilder.pb"
IncludeFile "CkJsonObject.pb"
IncludeFile "CkHttpRequest.pb"

Procedure ChilkatExample()

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

    http.i = CkHttp::ckCreate()
    If http.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    success.i

    req.i = CkHttpRequest::ckCreate()
    If req.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkHttpRequest::setCkHttpVerb(req, "POST")
    CkHttpRequest::setCkPath(req, "/token")
    CkHttpRequest::setCkContentType(req, "application/x-www-form-urlencoded")
    CkHttpRequest::ckAddParam(req,"grant_type","password")
    CkHttpRequest::ckAddParam(req,"username","your_username")
    CkHttpRequest::ckAddParam(req,"password","your_password")

    tokenEndpoint.s = "https://your_api.azurewebsites.net/token"
    resp.i = CkHttp::ckPostUrlEncoded(http,tokenEndpoint,req)
    If CkHttp::ckLastMethodSuccess(http) = 0
        Debug CkHttp::ckLastErrorText(http)
        CkHttp::ckDispose(http)
        CkHttpRequest::ckDispose(req)
        ProcedureReturn
    EndIf

    sbResponseBody.i = CkStringBuilder::ckCreate()
    If sbResponseBody.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkHttpResponse::ckGetBodySb(resp,sbResponseBody)
    jResp.i = CkJsonObject::ckCreate()
    If jResp.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkJsonObject::ckLoadSb(jResp,sbResponseBody)
    CkJsonObject::setCkEmitCompact(jResp, 0)

    Debug "Response Body:"
    Debug CkJsonObject::ckEmit(jResp)

    ; Sample JSON response:

    ; {
    ;   "access_token": "NQGHn ... xTS",
    ;   "token_type": "bearer",
    ;   "expires_in": 1209599,
    ;   "userName": "your_username",
    ;   ".issued": "Mon, 27 Apr 2020 23:49:35 GMT",
    ;   ".expires": "Mon, 11 May 2020 23:49:35 GMT"
    ; }

    respStatusCode.i = CkHttpResponse::ckStatusCode(resp)
    Debug "Response Status Code = " + Str(respStatusCode)
    If respStatusCode >= 400
        Debug "Response Header:"
        Debug CkHttpResponse::ckHeader(resp)
        Debug "Failed."
        CkHttpResponse::ckDispose(resp)

        CkHttp::ckDispose(http)
        CkHttpRequest::ckDispose(req)
        CkStringBuilder::ckDispose(sbResponseBody)
        CkJsonObject::ckDispose(jResp)
        ProcedureReturn
    EndIf

    CkHttpResponse::ckDispose(resp)

    ; ----------------------------------
    ; Use the OAuth2 token in a request.
    ; For example...

    sbXml.i = CkStringBuilder::ckCreate()
    If sbXml.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    success = CkStringBuilder::ckLoadFile(sbXml,"c:/someDir/someXmlFile.xml","utf-8")
    If success = 0
        Debug "Failed to load the XML file."
        CkHttp::ckDispose(http)
        CkHttpRequest::ckDispose(req)
        CkStringBuilder::ckDispose(sbResponseBody)
        CkJsonObject::ckDispose(jResp)
        CkStringBuilder::ckDispose(sbXml)
        ProcedureReturn
    EndIf

    ; Get the OAuth2 token and use it for authentication
    CkHttp::setCkAuthToken(http, CkJsonObject::ckStringOf(jResp,"token"))

    destUrl.s = "https://your_api.azurewebsites.net/destinationUrl"
    resp = CkHttp::ckPostXml(http,destUrl,CkStringBuilder::ckGetAsString(sbXml),"utf-8")
    If CkHttp::ckLastMethodSuccess(http) = 0
        Debug CkHttp::ckLastErrorText(http)
        CkHttp::ckDispose(http)
        CkHttpRequest::ckDispose(req)
        CkStringBuilder::ckDispose(sbResponseBody)
        CkJsonObject::ckDispose(jResp)
        CkStringBuilder::ckDispose(sbXml)
        ProcedureReturn
    EndIf

    respStatusCode = CkHttpResponse::ckStatusCode(resp)
    Debug "Response Status Code = " + Str(respStatusCode)
    If respStatusCode >= 400
        Debug "Response Header:"
        Debug CkHttpResponse::ckHeader(resp)
        Debug "Failed."
        CkHttpResponse::ckDispose(resp)

        CkHttp::ckDispose(http)
        CkHttpRequest::ckDispose(req)
        CkStringBuilder::ckDispose(sbResponseBody)
        CkJsonObject::ckDispose(jResp)
        CkStringBuilder::ckDispose(sbXml)
        ProcedureReturn
    EndIf

    ; Examine the response body
    Debug CkHttpResponse::ckBodyStr(resp)

    CkHttpResponse::ckDispose(resp)



    CkHttp::ckDispose(http)
    CkHttpRequest::ckDispose(req)
    CkStringBuilder::ckDispose(sbResponseBody)
    CkJsonObject::ckDispose(jResp)
    CkStringBuilder::ckDispose(sbXml)


    ProcedureReturn
EndProcedure