lambdify.aws.client.core.http

Class AuthorizationHeaderAWS4Signer

java.lang.Object

lambdify.aws.client.core.http.AuthorizationHeaderAWS4Signer

public class AuthorizationHeaderAWS4Signer
extends Object

AWS4 signer for authorization header.

Field Summary

Fields

Modifier and Type	Field and Description
private static String	ALGORITHM
private SimpleDateFormat	dateTimeFormat
private static String	EMPTY_BODY_SHA256
private static String	ISO8601BasicFormat
private String	regionName
private static String	SCHEME
private String	serviceName
private static String	TERMINATOR

Constructor Summary

Constructors

Constructor and Description
AuthorizationHeaderAWS4Signer(String serviceName, String regionName)

Method Summary

Modifier and Type	Method and Description
String	computeSignature(HttpUtils.HttpRequest httpRequest, AwsCredentials credentials) Compute the request signature.
protected static String	getCanonicalizedHeaderString(Map<String,String> headers) Computes the canonical headers with values for the request.
static String	getCanonicalizedQueryString(Map<String,String> parameters) Examines the specified query string parameters and returns a canonicalized form.
protected static String	getCanonicalizedResourcePath(URL endpoint) Returns the canonicalized resource path for the service endpoint.
protected static String	getCanonicalizeHeaderNames(Map<String,String> headers) Returns the canonical collection of header names that will be included in the signature.
protected static String	getCanonicalRequest(URL endpoint, String httpMethod, String queryParameters, String canonicalizedHeaderNames, String canonicalizedHeaders, String bodyHash) Returns the canonical request string to go into the signer process; this consists of several canonical sub-parts.
private String	getStringToSign(String dateTime, String scope, String canonicalRequest)
byte[]	hash(byte[] data) Hashes the byte array using the SHA-256 algorithm.
private byte[]	hash(String text) Hashes the string contents (assumed to be UTF-8) using the SHA-256 algorithm.
String	hashPayload(byte[] payload)
void	sign(HttpUtils.HttpRequest httpRequest, AwsCredentials credentials) Sign the request.
private byte[]	sign(String stringData, byte[] key, String algorithm)
private String	toHex(byte[] data) Converts byte data to a Hex-encoded string.

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY_BODY_SHA256

private static final String EMPTY_BODY_SHA256

See Also:

Constant Field Values

SCHEME

private static final String SCHEME

See Also:

Constant Field Values

ALGORITHM

private static final String ALGORITHM

See Also:

Constant Field Values

TERMINATOR

private static final String TERMINATOR

See Also:

Constant Field Values

ISO8601BasicFormat

private static final String ISO8601BasicFormat

See Also:

Constant Field Values

serviceName

private final String serviceName

regionName

private final String regionName

dateTimeFormat

private final SimpleDateFormat dateTimeFormat

Constructor Detail

AuthorizationHeaderAWS4Signer

public AuthorizationHeaderAWS4Signer(String serviceName,
                                     String regionName)

Method Detail

sign

public void sign(HttpUtils.HttpRequest httpRequest,
                 AwsCredentials credentials)

Sign the request.

Parameters:

httpRequest -

credentials -

computeSignature

public String computeSignature(HttpUtils.HttpRequest httpRequest,
                               AwsCredentials credentials)

Compute the request signature.

Parameters:

httpRequest -

credentials -

Returns:

getCanonicalizeHeaderNames

protected static String getCanonicalizeHeaderNames(Map<String,String> headers)

Returns the canonical collection of header names that will be included in the signature. For AWS4, all header names must be included in the process in sorted canonicalized order.

Parameters:

headers -

Returns:

getCanonicalizedHeaderString

protected static String getCanonicalizedHeaderString(Map<String,String> headers)

Computes the canonical headers with values for the request. For AWS4, all headers must be included in the signing process.

Parameters:

headers -

Returns:

getCanonicalRequest

protected static String getCanonicalRequest(URL endpoint,
                                            String httpMethod,
                                            String queryParameters,
                                            String canonicalizedHeaderNames,
                                            String canonicalizedHeaders,
                                            String bodyHash)

Returns the canonical request string to go into the signer process; this consists of several canonical sub-parts.

Parameters:

endpoint -

httpMethod -

queryParameters -

canonicalizedHeaderNames -

canonicalizedHeaders -

bodyHash -

Returns:

getCanonicalizedResourcePath

protected static String getCanonicalizedResourcePath(URL endpoint)

Returns the canonicalized resource path for the service endpoint.

Parameters:

endpoint -

Returns:

getCanonicalizedQueryString

public static String getCanonicalizedQueryString(Map<String,String> parameters)

Examines the specified query string parameters and returns a canonicalized form. The canonicalized query string is formed by first sorting all the query string parameters, then URI encoding both the key and value and then joining them, in order, separating key value pairs with an ' '.

Parameters:

parameters - The query string parameters to be canonicalized.

Returns:

A canonicalized form for the specified query string parameters.

getStringToSign

private String getStringToSign(String dateTime,
                               String scope,
                               String canonicalRequest)

hashPayload

public String hashPayload(byte[] payload)

hash

private byte[] hash(String text)

Hashes the string contents (assumed to be UTF-8) using the SHA-256 algorithm.

Parameters:

text -

Returns:

hash

public byte[] hash(byte[] data)

Hashes the byte array using the SHA-256 algorithm.

Parameters:

data -

Returns:

sign

private byte[] sign(String stringData,
                    byte[] key,
                    String algorithm)

toHex

private String toHex(byte[] data)

Converts byte data to a Hex-encoded string.

Parameters:

data - data to hex encode.

Returns:

hex-encoded string.