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org.apache.amber.oauth2.common.utils
Class OAuthUtils

java.lang.Object
  org.apache.amber.oauth2.common.utils.OAuthUtils

public final class OAuthUtils
extends Object

Common OAuth Utils class.

Some methods based on the Utils class from OAuth V1.0a library available at: http://oauth.googlecode.com/svn/code/java/core/

Field Summary

static String	AUTH_SCHEME
static String	MULTIPART

Constructor Summary

OAuthUtils()

Method Summary

static Map<String,Object>	decodeForm(String form) Parse a form-urlencoded document.
static Map<String,String>	decodeOAuthHeader(String header)
static String	decodePercent(String s)
static Set<String>	decodeScopes(String s)
static String	encodeAuthorizationBearerHeader(Map<String,Object> entries) Construct an Authorization Bearer header
static String	encodeOAuthHeader(Map<String,Object> entries) Construct a WWW-Authenticate header
static String	encodeScopes(Set<String> s)
static String	format(Collection<? extends Map.Entry<String,Object>> parameters, String encoding) Translates parameters into application/x-www-form-urlencoded String
static String	getAuthHeaderField(String authHeader)
static String	getAuthzMethod(String header)
static OAuthProblemException	handleBadContentTypeException(String expectedContentType)
static OAuthProblemException	handleMissingParameters(Set<String> missingParams) Creates OAuthProblemException that contains set of missing oauth parameters
static OAuthProblemException	handleNotAllowedParametersOAuthException(List<String> notAllowedParams)
static OAuthProblemException	handleOAuthProblemException(String message) Creates invalid_request exception with given message
static boolean	hasContentType(String requestContentType, String requiredContentType)
static boolean	hasEmptyValues(String[] array)
static <T> T	instantiateClass(Class<T> clazz)
static Object	instantiateClassWithParameters(Class clazz, Class[] paramsTypes, Object[] paramValues)
static boolean	isEmpty(String value)
static boolean	isFormEncoded(String contentType) Return true if the given Content-Type header means FORM_ENCODED.
static boolean	isMultipart(javax.servlet.http.HttpServletRequest request)
static String	percentEncode(Iterable values) Construct a &-separated list of the given values, percentEncoded.
static String	percentEncode(String s)
static String	saveStreamAsString(InputStream is) Read data from Input Stream and save it as a String.
static String	toString(InputStream is, String defaultCharset) Get the entity content as a String, using the provided default character set if none is found in the entity.

Methods inherited from class java.lang.Object

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

Field Detail

AUTH_SCHEME

public static final String AUTH_SCHEME

See Also:

Constant Field Values

MULTIPART

public static final String MULTIPART

See Also:

Constant Field Values

Constructor Detail

OAuthUtils

public OAuthUtils()

Method Detail

format

public static String format(Collection<? extends Map.Entry<String,Object>> parameters,
                            String encoding)

Translates parameters into application/x-www-form-urlencoded String

Parameters:

parameters - parameters to encode

encoding - The name of a supported character encoding.

Returns:

Translated string

saveStreamAsString

public static String saveStreamAsString(InputStream is)
                                 throws IOException

Read data from Input Stream and save it as a String.

Parameters:

is - InputStream to be read

Returns:

String that was read from the stream

Throws:

IOException

toString

public static String toString(InputStream is,
                              String defaultCharset)
                       throws IOException

Get the entity content as a String, using the provided default character set if none is found in the entity. If defaultCharset is null, the default "UTF-8" is used.

Parameters:

is - input stream to be saved as string

defaultCharset - character set to be applied if none found in the entity

Returns:

the entity content as a String

Throws:

IllegalArgumentException - if entity is null or if content length > Integer.MAX_VALUE

IOException - if an error occurs reading the input stream

handleOAuthProblemException

public static OAuthProblemException handleOAuthProblemException(String message)

Creates invalid_request exception with given message

Parameters:

message - error message

Returns:

OAuthException

handleMissingParameters

public static OAuthProblemException handleMissingParameters(Set<String> missingParams)

Creates OAuthProblemException that contains set of missing oauth parameters

Parameters:

missingParams - missing oauth parameters

Returns:

OAuthProblemException with user friendly message about missing oauth parameters

handleBadContentTypeException

public static OAuthProblemException handleBadContentTypeException(String expectedContentType)

handleNotAllowedParametersOAuthException

public static OAuthProblemException handleNotAllowedParametersOAuthException(List<String> notAllowedParams)

decodeForm

public static Map<String,Object> decodeForm(String form)

Parse a form-urlencoded document.

isFormEncoded

public static boolean isFormEncoded(String contentType)

Return true if the given Content-Type header means FORM_ENCODED.

decodePercent

public static String decodePercent(String s)

percentEncode

public static String percentEncode(Iterable values)

Construct a &-separated list of the given values, percentEncoded.

percentEncode

public static String percentEncode(String s)

instantiateClass

public static <T> T instantiateClass(Class<T> clazz)
                          throws OAuthSystemException

Throws:

OAuthSystemException

instantiateClassWithParameters

public static Object instantiateClassWithParameters(Class clazz,
                                                    Class[] paramsTypes,
                                                    Object[] paramValues)
                                             throws OAuthSystemException

Throws:

OAuthSystemException

getAuthHeaderField

public static String getAuthHeaderField(String authHeader)

decodeOAuthHeader

public static Map<String,String> decodeOAuthHeader(String header)

encodeOAuthHeader

public static String encodeOAuthHeader(Map<String,Object> entries)

Construct a WWW-Authenticate header

encodeAuthorizationBearerHeader

public static String encodeAuthorizationBearerHeader(Map<String,Object> entries)

Construct an Authorization Bearer header

isEmpty

public static boolean isEmpty(String value)

hasEmptyValues

public static boolean hasEmptyValues(String[] array)

getAuthzMethod

public static String getAuthzMethod(String header)

decodeScopes

public static Set<String> decodeScopes(String s)

encodeScopes

public static String encodeScopes(Set<String> s)

isMultipart

public static boolean isMultipart(javax.servlet.http.HttpServletRequest request)

hasContentType

public static boolean hasContentType(String requestContentType,
                                     String requiredContentType)