TChilkatOAuth1 Delphi ActiveX Reference Documentation

TChilkatOAuth1

OAuth 1.0a signature generator.

Importing the Chilkat ActiveX into Delphi

Important: Whenever upgrading to a new version of Chilkat, make sure to re-imported ActiveX DLL into Delphi to regenerate the files described below.

Two things are required to use an ActiveX in Delphi:

  1. The ActiveX DLL needs to be registered via regsvr32 on the system where the Delphi application runs. See How To Register ActiveX DLLs for detailed information.
  2. The ActiveX component needs to be "imported". Use the Delphi Import Component Wizard to import the Chilkat type library. This creates the following files: Chilkat_v9_5_0_TLB.pas and Chilkat_v9_5_0_TLB.dcr. The Chilkat_v9_5_0_TLB.pas should be added to your project.

To import the Chilkat type library, do the following:

  1. In the Delphi RAD Studio, select the menu item "Component" --> "Import a Type Library".
  2. Find "Chilkat ActiveX v9.5.0" in the list and select it. This will only appear in the list if the ChilkatAx-9.5.0-win32.dll (or ChilkatAx-9.5.0-x64.dll) has been registered w/ regsvr32.
  3. Check the "Generate Component Wrappers" checkbox.
  4. Select a directory where the unit files (.pas and .dcr) will be generated.
  5. Select "Create Unit" and then "Finish".
  6. Add the .pas to your Delphi project.

To use a Chilkat ActiveX object in your Delphi code, add "Chilkat_v9_5_0_TLB" to the "uses" statement. For example:

uses
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_v9_5_0_TLB;

Object Creation

var
obj: TChilkatOAuth1;
...
begin
obj := TChilkatOAuth1.Create(Self);
...
// When finished, free the object instance.
obj.Free();

Properties

property AuthorizationHeader: WideString readonly

Introduced in version 9.5.0.53

The authorization header. This is what would be included in the Authorization HTTP request header if it is going to be used as the means for providing the OAuth1 authorization information.

property BaseString: WideString readonly

Introduced in version 9.5.0.53

This is the exact string that was signed. For example, if the signature method is HMAC-SHA1, the BaseString is the exact string that passed to the HMAC-SHA1. An application does not set the BaseString property. The BaseString is exposed as a property to allow for debugging and to see the exact string that is signed.

property ConsumerKey: WideString

Introduced in version 9.5.0.53

The consumer key.

property ConsumerSecret: WideString

Introduced in version 9.5.0.53

The consumer secret.

property DebugLogFilePath: WideString

If set to a file path, causes each Chilkat method or property call to automatically append it's LastErrorText to the specified log file. The information is appended such that if a hang or crash occurs, it is possible to see the context in which the problem occurred, as well as a history of all Chilkat calls up to the point of the problem. The VerboseLogging property can be set to provide more detailed information.

This property is typically used for debugging the rare cases where a Chilkat method call hangs or generates an exception that halts program execution (i.e. crashes). A hang or crash should generally never happen. The typical causes of a hang are:

  1. a timeout related property was set to 0 to explicitly indicate that an infinite timeout is desired,
  2. the hang is actually a hang within an event callback (i.e. it is a hang within the application code), or
  3. there is an internal problem (bug) in the Chilkat code that causes the hang.

property EncodedSignature: WideString readonly

Introduced in version 9.5.0.53

The URL encoded representation of the Signature property

property GeneratedUrl: WideString readonly

Introduced in version 9.5.0.53

The URL that includes the OAuth1 query params.

property HmacKey: WideString readonly

Introduced in version 9.5.0.53

The exact HMAC key used to sign the BaseString. An application does not directly set the HmacKey. The HmacKey property is read-only and is provided for debugging to see the exact HMAC key used to sign the BaseString. The HMAC key is composed from the consumer secret (if it exists) and the token secret (if it exists).

property LastBinaryResult: OleVariant readonly

Introduced in version 9.5.0.52

The binary data returned by the last (binary data returning) method called. Only available if Chilkat.Global.KeepBinaryResult is set to 1. This provides a means for obtaining large varbinary results in the SQL Server environment (where limitations exist in getting large amounts of data returned by method calls, but where temp tables can be used for binary properties).

property LastErrorHtml: WideString readonly

Provides information in HTML format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

property LastErrorText: WideString readonly

Provides information in plain-text format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

Concept of LastErrorText

LastErrorText Standard Information

property LastErrorXml: WideString readonly

Provides information in XML format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

property LastMethodSuccess: Integer

Introduced in version 9.5.0.52

Indicate whether the last method call succeeded or failed. A value of 1 indicates success, a value of 0 indicates failure. This property is automatically set for method calls. It is not modified by property accesses. The property is automatically set to indicate success for the following types of method calls:

  • Any method that returns a string.
  • Any method returning a Chilkat object, binary bytes, or a date/time.
  • Any method returning a standard boolean status value where success = 1 and failure = 0.
  • Any method returning an integer where failure is defined by a return value less than zero.

Note: Methods that do not fit the above requirements will always set this property equal to 1. For example, a method that returns no value (such as a "void" in C++) will technically always succeed.

property LastStringResult: WideString readonly

Introduced in version 9.5.0.52

The string return value of the last (string returning) method called. Only available if Chilkat.Global.KeepStringResult is set to 1. This provides a means for obtaining large string results in the SQL Server environment (where limitations exist in getting long strings returned by method calls, but where temp tables can be used for string properties).

Long Strings Returned by ActiveX Methods in SQL Server

property LastStringResultLen: Integer readonly

Introduced in version 9.5.0.53

The length, in characters, of the string contained in the LastStringResult property.

property Nonce: WideString

Introduced in version 9.5.0.53

The nonce.

property OauthMethod: WideString

Introduced in version 9.5.0.53

The HTTP method, such as "GET", "POST", "PUT", "DELETE", or "HEAD". Defaults to "GET".

property OauthUrl: WideString

Introduced in version 9.5.0.53

The OAuth URL, such as "http://echo.lab.madgex.com/echo.ashx". See http://bettiolo.github.io/oauth-reference-page/ to compare Chilkat results with another tool's results.

Note: The OAuthUrl should not include query parameters. For example, do not set the OAuthUrl equal to

https://rest.sandbox.netsuite.com/app/site/hosting/restlet.nl?script=165&deploy=1
Instead, set OAuthUrl equal to
https://rest.sandbox.netsuite.com/app/site/hosting/restlet.nl
and then subsequently call AddParam for each query parameter.

property OauthVersion: WideString

Introduced in version 9.5.0.53

The oauth_version. Defaults to "1.0". May be set to the empty string to exclude.

property QueryString: WideString readonly

Introduced in version 9.5.0.53

Contains the normalized set of request parameters that are signed. This is a read-only property made available for debugging purposes.

property Realm: WideString

Introduced in version 9.5.0.70

The realm (optional).

property Signature: WideString readonly

Introduced in version 9.5.0.53

The generated base64 signature.

property SignatureMethod: WideString

Introduced in version 9.5.0.53

The signature method. Defaults to "HMAC-SHA1". Other possible choices are "HMAC1-SHA256", "RSA-SHA1", and "RSA-SHA2".

property Timestamp: WideString

Introduced in version 9.5.0.53

The timestamp, such as "1441632569".

property Token: WideString

Introduced in version 9.5.0.53

The token.

property TokenSecret: WideString

Introduced in version 9.5.0.53

The token secret

property VerboseLogging: Integer

If set to 1, then the contents of LastErrorText (or LastErrorXml, or LastErrorHtml) may contain more verbose information. The default value is 0. Verbose logging should only be used for debugging. The potentially large quantity of logged information may adversely affect peformance.

property Version: WideString readonly

Version of the component/library, such as "9.5.0.63"

Methods

function AddParam(name: WideString; value: WideString): Integer;

Introduced in version 9.5.0.53

Adds an extra name/value parameter to the OAuth1 signature.

Returns 1 for success, 0 for failure.

REST OAuth1 with Params

function Generate(): Integer;

Introduced in version 9.5.0.53

Generate the signature based on the property settings. Input properties are OauthVersion, OauthMethod, Url, ConsumerKey, ConsumerSecret, Token, TokenSecret, Nonce, and Timestamp. Properties set by this method include: BaseString, Signature, HmacKey, EncodedSignature, QueryString, GeneratedUrl, andAuthorizationHeader.

Returns 1 for success, 0 for failure.

Generate OAuth 1.0 Signature

function GenNonce(numBytes: Integer): Integer;

Introduced in version 9.5.0.55

Generates a random nonce numBytes in length and sets the Nonce property to the hex encoded value.

Returns 1 for success, 0 for failure.

function GenTimestamp(): Integer;

Introduced in version 9.5.0.55

Sets the Timestamp property to the current date/time.

Returns 1 for success, 0 for failure.

function RemoveParam(name: WideString): Integer;

Introduced in version 9.5.0.53

Removes a name/value parameter from the OAuth1 signature.

Returns 1 for success, 0 for failure.

function SetRsaKey(privKey: TPrivateKey): Integer;

Introduced in version 9.5.0.64

Sets the RSA key to be used when the SignatureMethod is set to "RSA-SHA1" or "RSA-SHA2".

Returns 1 for success, 0 for failure.