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- Properties specific to AuthToken variables
- Operating mode of OAuth 2.0 authentication
- Using the AuthToken variables
AuthToken (Variable type) In french: AuthToken
The AuthToken type contains the characteristics of a token used to access a web service. This access token was previously requested: - by the AuthIdentify function.
- by an HTTP request. In this case, the request returns the token in JSON format.
You can define and change the characteristics of this access token using different WLanguage properties. Remark: For more details on the declaration of this type of variable and the use of WLanguage properties, see Declaring a variable.
OAuth2Params is OAuth2Parameters
OAuth2Params.ClientID = "01234567890123456789"
OAuth2Params.ClientSecret = "98765432109876543210"
OAuth2Params.AuthURL = "https://www.dropbox.com/oauth2/authorize"
OAuth2Params.TokenURL = "https://api.dropboxapi.com/oauth2/token"
OAuth2Params.AdditionalParameters = "force_reapprove=false"
<COMPILE IF ConfigurationType<>Site>
OAuth2Params.RedirectionURL = "http://localhost:9874/"
<END>
MyToken is AuthToken = AuthIdentify(OAuth2Params)
req is httpRequest
req.Method = httpPost
req.URL = "https://api.dropboxapi.com/2/files/list_folder"
req.AuthToken = MyToken
req.ContentType = "application/json"
vAPIParam is Variant
vAPIParam.path = "/Homework/math"
vAPIParam.recursive = False
vAPIParam.include_media_info = False
vAPIParam.include_deleted = False
vAPIParam.include_has_explicit_shared_members = False
req.Content = VariantToJSON(vAPIParam)
HTTPresponse is httpResponse = HTTPSend(req)
let Data = JSONToVariant(HTTPresponse.Content)
httpReq is httpRequest
httpReq.Method = httpPost
httpReq.URL = PAYPAL_TOKEN
httpReq.User = PAYPAL_APP_ID
httpReq.Password = PAYPAL_SECRET
httpReq.Content = "grant_type=client_credentials"
httpReq.ContentType = "application/x-www-form-urlencoded"
httpRep is httpResponse = HTTPSend(httpReq)
IF httpRep.StatusCode = 200 THEN
oAuth2Param is OAuth2Parameters
oAuth2Param.ClientID = PAYPAL_APP_ID
oAuth2Param.ClientSecret = PAYPAL_SECRET
oAuth2Param.AuthURL = PAYPAL_ACCESS_BASEURL
oAuth2Param.Scope = PAYPAL_SCOPES
oAuth2Param.TokenURL = PAYPAL_TOKEN
MyToken is AuthToken(oAuth2Param, httpRep.Content)
gMyToken <= MyToken
END
Syntax In this case, AuthIdentify is used to retrieve the token parameters.
Declaring and describing an AuthToken variable (without using the AuthIdentify function) Hide the details
MyVariable is AuthToken(<OAuth2 parameter> , <Token>)
<OAuth2 parameter>: OAuthParameters variable Name of the OAuth2Parameters variable containing the information required to authenticate on a service implementing the OAuth 2.0 standard. <Token>: Character string String in JSON or UTF-8 format containing the token. Corresponds to the token returned by the service. Remarks Properties specific to AuthToken variables The following properties can be used to handle a token for accessing a web service: | | | | Property name | Type used | Effect |
|---|
| ExpirationDate | DateTime | Expiration date and time of token. | | Refresh | Character string | Value returned by the server to determine if the token can be refreshed. If this property is not specified, AuthRefreshToken cannot be used to refresh the token: you will have to request a new token.. | | ServerResponse | Buffer | Value returned by the server when the access token is requested. This property is read-only. | | Valid | Boolean | Validity of the access token: - True if the access token is valid.
- False otherwise.
This property is read-only. | | Value | Character string | Access token. This value can be used to send authenticated requests to the relevant web service. |
Operating mode of OAuth 2.0 authentication The steps of OAuth 2.0 authentication performed by AuthIdentify are as follows: - Running a first HTTP request to ask for an authorization (authorization URL specified in the OAuth2Parameters variable).
- Opening an OAuth 2.0 authentication window. The authentication window is defined by each service.
- After the authentication, the server returns an authorization code to request an access token. This code is added as parameter of second URL (access token URL specified in the OAuth2Parameters variable).
- Running the second HTTP request to ask for the access token. The result is a JSON buffer that contains, among other elements, the access token ("access_token") to be used for the requests that require authentication. The AuthToken variable contains the information found in this JSON buffer. This access token will be used by the calls to the APIs of the web service.
To use the APIs of the web service, simply use HTTPSend with a variable of type httpRequest defining the request to be executed. The AuthToken variable will be assigned to the AuthToken property of the httpRequest variable (see example). In this case, the server will receive the HTTP " Authorization" header with a value in the following format: "Authorization: Bearer xxx_access_token_xxx". Caution: - If the server does not return the access token in the format of JSON code according to the OAuth2.0 standard, an error will occur and the token will not be retrieved. The server response can be retrieved via the ServerResponse property of the AuthToken variable.
- If the server does not support the HTTP "Authorization" header for transmitting the access token, this transmission must be done by the developer according to the format expected by the requested service.
The following example allows you to use the web service of Facebook. In this case, the access token must be specified on the request URL.  Code sample for Facebook
MyToken is AuthToken
MyTokenParam is OAuth2Parameters
MyTokenParam.ClientID = "123456789012345"
MyTokenParam.ClientSecret = "45g8jh5kll45579021qsg5444j"
MyTokenParam.AuthURL = "https://www.facebook.com/dialog/oauth"
MyTokenParam.TokenURL = "https://graph.facebook.com/v2.3/oauth/access_token"
MyTokenParam.RedirectionURL = "http://localhost:9874/"
MyTokenParam.Scope = "email"
MyToken = AuthIdentify(MyTokenParam)
IF MyToken <> Null THEN
IF ErrorOccurred THEN
Error(ErrorInfo())
ELSE
HTTPRequest("https://graph.facebook.com/me?access_token=" + MyToken.Value)
vMyRes is Variant = JSONToVariant(HTTPGetResult(httpResult))
Trace(vMyRes.name)
END
END
 Code sample for Facebook:
MyToken is AuthToken
MyTokenParam is OAuth2Parameters
MyTokenParam.ClientID = "1705548803004741"
MyTokenParam.ClientSecret = "7b3305a5aa1687ef04af001ec3388ecc"
MyTokenParam.AuthURL = "https://www.facebook.com/dialog/oauth"
MyTokenParam.TokenURL = "https://graph.facebook.com/oauth/access_token"
MyTokenParam.RedirectionURL = "fb1705548803004741://authorize/"
MyTokenParam.Scope = "email"
MyToken = AuthIdentify(MyTokenParam)
IF MyToken <> Null THEN
IF ErrorOccurred THEN
Error(ErrorInfo())
ELSE
HTTPRequest("https://graph.facebook.com/me?access_token=" + MyToken.Value)
vMyRes is Variant = JSONToVariant(HTTPGetResult(httpResult))
Trace(vMyRes.name)
END
END
Using the AuthToken variables AuthToken variables can be used with the following functions: - standard syntax:
- prefix syntax:
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