com.ning.http.client.oauth

Class OAuthSignatureCalculator

java.lang.Object

com.ning.http.client.oauth.OAuthSignatureCalculator

All Implemented Interfaces:

SignatureCalculator

public class OAuthSignatureCalculator
extends Object
implements SignatureCalculator

Simple OAuth signature calculator that can used for constructing client signatures for accessing services that use OAuth for authorization.

Supports most common signature inclusion and calculation methods: HMAC-SHA1 for calculation, and Header inclusion as inclusion method. Nonce generation uses simple random numbers with base64 encoding.

Author:

tatu ([email protected])

Field Summary

Fields

Modifier and Type	Field and Description
protected ConsumerKey	consumerAuth
static String	HEADER_AUTHORIZATION
protected ThreadSafeHMAC	mac
protected byte[]	nonceBuffer
protected Random	random To generate Nonce, need some (pseudo)randomness; no need for secure variant here.
protected RequestToken	userAuth

Constructor Summary

Constructors

Constructor and Description
OAuthSignatureCalculator(ConsumerKey consumerAuth, RequestToken userAuth)

Method Summary

Methods

Modifier and Type	Method and Description
void	calculateAndAddSignature(Request request, RequestBuilderBase<?> requestBuilder) Method called when RequestBuilder.build() method is called.
String	calculateSignature(String method, Uri uri, long oauthTimestamp, String nonce, List<Param> formParams, List<Param> queryParams) Method for calculating OAuth signature using HMAC/SHA-1 method.
String	constructAuthHeader(String signature, String nonce, long oauthTimestamp) Method used for constructing

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

HEADER_AUTHORIZATION

public static final String HEADER_AUTHORIZATION

See Also:

Constant Field Values

random

protected final Random random

To generate Nonce, need some (pseudo)randomness; no need for secure variant here.

nonceBuffer

protected final byte[] nonceBuffer

mac

protected final ThreadSafeHMAC mac

consumerAuth

protected final ConsumerKey consumerAuth

userAuth

protected final RequestToken userAuth

Constructor Detail

OAuthSignatureCalculator

public OAuthSignatureCalculator(ConsumerKey consumerAuth,
                        RequestToken userAuth)

Parameters:

consumerAuth - Consumer key to use for signature calculation

userAuth - Request/access token to use for signature calculation

Method Detail

calculateAndAddSignature

public void calculateAndAddSignature(Request request,
                            RequestBuilderBase<?> requestBuilder)

Description copied from interface: SignatureCalculator

Method called when RequestBuilder.build() method is called. Should first calculate signature information and then modify request (using passed RequestBuilder) to add signature (usually as an HTTP header).

Specified by:

calculateAndAddSignature in interface SignatureCalculator

Parameters:

request - Request that is being built; needed to access content to be signed

requestBuilder - builder that can be used to modify request, usually by adding header that includes calculated signature. Be sure NOT to call RequestBuilder.build() since this will cause infinite recursion

calculateSignature

public String calculateSignature(String method,
                        Uri uri,
                        long oauthTimestamp,
                        String nonce,
                        List<Param> formParams,
                        List<Param> queryParams)

Method for calculating OAuth signature using HMAC/SHA-1 method.

constructAuthHeader

public String constructAuthHeader(String signature,
                         String nonce,
                         long oauthTimestamp)

Method used for constructing