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TokenResponse.java
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TokenResponse.java
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/*
* Copyright 2015 The AppAuth for Android Authors. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the
* License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.openid.appauth;
import static net.openid.appauth.AdditionalParamsProcessor.checkAdditionalParams;
import static net.openid.appauth.AdditionalParamsProcessor.extractAdditionalParams;
import static net.openid.appauth.Preconditions.checkNotEmpty;
import static net.openid.appauth.Preconditions.checkNotNull;
import static net.openid.appauth.Preconditions.checkNullOrNotEmpty;
import android.text.TextUtils;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.annotation.VisibleForTesting;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.TimeUnit;
/**
* A response to a token request.
*
* @see TokenRequest
* @see "The OAuth 2.0 Authorization Framework (RFC 6749), Section 4.1.4
* <https://tools.ietf.org/html/rfc6749#section-4.1.4>"
*/
public class TokenResponse {
/**
* Indicates that a provided access token is a bearer token.
*
* @see "The OAuth 2.0 Authorization Framework (RFC 6749), Section 7.1
* <https://tools.ietf.org/html/rfc6749#section-7.1>"
*/
public static final String TOKEN_TYPE_BEARER = "Bearer";
@VisibleForTesting
static final String KEY_REQUEST = "request";
@VisibleForTesting
static final String KEY_EXPIRES_AT = "expires_at";
// TODO: rename all KEY_* below to PARAM_*
@VisibleForTesting
static final String KEY_TOKEN_TYPE = "token_type";
@VisibleForTesting
static final String KEY_ACCESS_TOKEN = "access_token";
@VisibleForTesting
static final String KEY_EXPIRES_IN = "expires_in";
@VisibleForTesting
static final String KEY_REFRESH_TOKEN = "refresh_token";
@VisibleForTesting
static final String KEY_ID_TOKEN = "id_token";
@VisibleForTesting
static final String KEY_SCOPE = "scope";
@VisibleForTesting
static final String KEY_ADDITIONAL_PARAMETERS = "additionalParameters";
private static final Set<String> BUILT_IN_PARAMS = new HashSet<>(Arrays.asList(
KEY_TOKEN_TYPE,
KEY_ACCESS_TOKEN,
KEY_EXPIRES_IN,
KEY_REFRESH_TOKEN,
KEY_ID_TOKEN,
KEY_SCOPE
));
/**
* The token request associated with this response.
*/
@NonNull
public final TokenRequest request;
/**
* The type of the token returned. Typically this is {@link #TOKEN_TYPE_BEARER}, or some
* other token type that the client has negotiated with the authorization service.
*
* @see "The OAuth 2.0 Authorization Framework (RFC 6749), Section 4.1.4
* <https://tools.ietf.org/html/rfc6749#section-4.1.4>"
* @see "The OAuth 2.0 Authorization Framework (RFC 6749), Section 5.1
* <https://tools.ietf.org/html/rfc6749#section-5.1>"
*/
@Nullable
public final String tokenType;
/**
* The access token, if provided.
*
* @see "The OAuth 2.0 Authorization Framework (RFC 6749), Section 5.1
* <https://tools.ietf.org/html/rfc6749#section-5.1>"
*/
@Nullable
public final String accessToken;
/**
* The expiration time of the access token, if provided. If an access token is provided but the
* expiration time is not, then the expiration time is typically some default value specified
* by the identity provider through some other means, such as documentation or an additional
* non-standard field.
*/
@Nullable
public final Long accessTokenExpirationTime;
/**
* The ID token describing the authenticated user, if provided.
*
* @see "OpenID Connect Core 1.0, Section 2
* <https://openid.net/specs/openid-connect-core-1_0.html#rfc.section.2>"
*/
@Nullable
public final String idToken;
/**
* The refresh token, if provided.
*
* @see "The OAuth 2.0 Authorization Framework (RFC 6749), Section 5.1
* <https://tools.ietf.org/html/rfc6749#section-5.1>"
*/
@Nullable
public final String refreshToken;
/**
* The scope of the access token. If the scope is identical to that originally
* requested, then this value is optional.
*
* @see "The OAuth 2.0 Authorization Framework (RFC 6749), Section 5.1
* <https://tools.ietf.org/html/rfc6749#section-5.1>"
*/
@Nullable
public final String scope;
/**
* Additional, non-standard parameters in the response.
*/
@NonNull
public final Map<String, String> additionalParameters;
/**
* Creates instances of {@link TokenResponse}.
*/
public static final class Builder {
@NonNull
private TokenRequest mRequest;
@Nullable
private String mTokenType;
@Nullable
private String mAccessToken;
@Nullable
private Long mAccessTokenExpirationTime;
@Nullable
private String mIdToken;
@Nullable
private String mRefreshToken;
@Nullable
private String mScope;
@NonNull
private Map<String, String> mAdditionalParameters;
/**
* Creates a token response associated with the specified request.
*/
public Builder(@NonNull TokenRequest request) {
setRequest(request);
mAdditionalParameters = Collections.emptyMap();
}
/**
* Extracts token response fields from a JSON string.
*
* @throws JSONException if the JSON is malformed or has incorrect value types for fields.
*/
@NonNull
public Builder fromResponseJsonString(@NonNull String jsonStr) throws JSONException {
checkNotEmpty(jsonStr, "json cannot be null or empty");
return fromResponseJson(new JSONObject(jsonStr));
}
/**
* Extracts token response fields from a JSON object.
*
* @throws JSONException if the JSON is malformed or has incorrect value types for fields.
*/
@NonNull
public Builder fromResponseJson(@NonNull JSONObject json) throws JSONException {
setTokenType(JsonUtil.getString(json, KEY_TOKEN_TYPE));
setAccessToken(JsonUtil.getStringIfDefined(json, KEY_ACCESS_TOKEN));
setAccessTokenExpirationTime(JsonUtil.getLongIfDefined(json, KEY_EXPIRES_AT));
if (json.has(KEY_EXPIRES_IN)) {
setAccessTokenExpiresIn(json.getLong(KEY_EXPIRES_IN));
}
setRefreshToken(JsonUtil.getStringIfDefined(json, KEY_REFRESH_TOKEN));
setIdToken(JsonUtil.getStringIfDefined(json, KEY_ID_TOKEN));
setScope(JsonUtil.getStringIfDefined(json, KEY_SCOPE));
setAdditionalParameters(extractAdditionalParams(json, BUILT_IN_PARAMS));
return this;
}
/**
* Specifies the request associated with this response. Must not be null.
*/
@NonNull
public Builder setRequest(@NonNull TokenRequest request) {
mRequest = checkNotNull(request, "request cannot be null");
return this;
}
/**
* Specifies the token type of the access token in this response. If not null, the value
* must be non-empty.
*/
@NonNull
public Builder setTokenType(@Nullable String tokenType) {
mTokenType = checkNullOrNotEmpty(tokenType, "token type must not be empty if defined");
return this;
}
/**
* Specifies the access token. If not null, the value must be non-empty.
*/
@NonNull
public Builder setAccessToken(@Nullable String accessToken) {
mAccessToken = checkNullOrNotEmpty(accessToken,
"access token cannot be empty if specified");
return this;
}
/**
* Sets the relative expiration time of the access token, in seconds, using the default
* system clock as the source of the current time.
*/
@NonNull
public Builder setAccessTokenExpiresIn(@NonNull Long expiresIn) {
return setAccessTokenExpiresIn(expiresIn, SystemClock.INSTANCE);
}
/**
* Sets the relative expiration time of the access token, in seconds, using the provided
* clock as the source of the current time.
*/
@NonNull
@VisibleForTesting
Builder setAccessTokenExpiresIn(@Nullable Long expiresIn, @NonNull Clock clock) {
if (expiresIn == null) {
mAccessTokenExpirationTime = null;
} else {
mAccessTokenExpirationTime = clock.getCurrentTimeMillis()
+ TimeUnit.SECONDS.toMillis(expiresIn);
}
return this;
}
/**
* Sets the exact expiration time of the access token, in milliseconds since the UNIX epoch.
*/
@NonNull
public Builder setAccessTokenExpirationTime(@Nullable Long expiresAt) {
mAccessTokenExpirationTime = expiresAt;
return this;
}
/**
* Specifies the ID token. If not null, the value must be non-empty.
*/
public Builder setIdToken(@Nullable String idToken) {
mIdToken = checkNullOrNotEmpty(idToken, "id token must not be empty if defined");
return this;
}
/**
* Specifies the refresh token. If not null, the value must be non-empty.
*/
public Builder setRefreshToken(@Nullable String refreshToken) {
mRefreshToken = checkNullOrNotEmpty(refreshToken,
"refresh token must not be empty if defined");
return this;
}
/**
* Specifies the encoded scope string, which is a space-delimited set of
* case-sensitive scope identifiers. Replaces any previously specified scope.
*
* @see "The OAuth 2.0 Authorization Framework (RFC 6749), Section 3.3
* <https://tools.ietf.org/html/rfc6749#section-3.3>"
*/
@NonNull
public Builder setScope(@Nullable String scope) {
if (TextUtils.isEmpty(scope)) {
mScope = null;
} else {
setScopes(scope.split(" +"));
}
return this;
}
/**
* Specifies the set of case-sensitive scopes. Replaces any previously specified set of
* scopes. Individual scope strings cannot be null or empty.
*
* <p>Scopes specified here are used to obtain a "down-scoped" access token, where the
* set of scopes specified _must_ be a subset of those already granted in
* previous requests.
*
* @see "The OAuth 2.0 Authorization Framework (RFC 6749), Section 3.3
* <https://tools.ietf.org/html/rfc6749#section-3.3>"
* @see "The OAuth 2.0 Authorization Framework (RFC 6749), Section 6
* <https://tools.ietf.org/html/rfc6749#section-6>"
*/
@NonNull
public Builder setScopes(String... scopes) {
if (scopes == null) {
scopes = new String[0];
}
setScopes(Arrays.asList(scopes));
return this;
}
/**
* Specifies the set of case-sensitive scopes. Replaces any previously specified set of
* scopes. Individual scope strings cannot be null or empty.
*
* <p>Scopes specified here are used to obtain a "down-scoped" access token, where the
* set of scopes specified _must_ be a subset of those already granted in
* previous requests.
*
* @see "The OAuth 2.0 Authorization Framework (RFC 6749), Section 3.3
* <https://tools.ietf.org/html/rfc6749#section-3.3>"
* @see "The OAuth 2.0 Authorization Framework (RFC 6749), Section 6
* <https://tools.ietf.org/html/rfc6749#section-6>"
*/
@NonNull
public Builder setScopes(@Nullable Iterable<String> scopes) {
mScope = AsciiStringListUtil.iterableToString(scopes);
return this;
}
/**
* Specifies the additional, non-standard parameters received as part of the response.
*/
@NonNull
public Builder setAdditionalParameters(@Nullable Map<String, String> additionalParameters) {
mAdditionalParameters = checkAdditionalParams(additionalParameters, BUILT_IN_PARAMS);
return this;
}
/**
* Creates the token response instance.
*/
public TokenResponse build() {
return new TokenResponse(
mRequest,
mTokenType,
mAccessToken,
mAccessTokenExpirationTime,
mIdToken,
mRefreshToken,
mScope,
mAdditionalParameters);
}
}
TokenResponse(
@NonNull TokenRequest request,
@Nullable String tokenType,
@Nullable String accessToken,
@Nullable Long accessTokenExpirationTime,
@Nullable String idToken,
@Nullable String refreshToken,
@Nullable String scope,
@NonNull Map<String, String> additionalParameters) {
this.request = request;
this.tokenType = tokenType;
this.accessToken = accessToken;
this.accessTokenExpirationTime = accessTokenExpirationTime;
this.idToken = idToken;
this.refreshToken = refreshToken;
this.scope = scope;
this.additionalParameters = additionalParameters;
}
/**
* Derives the set of scopes from the consolidated, space-delimited scopes in the
* {@link #scope} field. If no scopes were specified on this response, the method will
* return `null`.
*/
@Nullable
public Set<String> getScopeSet() {
return AsciiStringListUtil.stringToSet(scope);
}
/**
* Produces a JSON string representation of the token response for persistent storage or
* local transmission (e.g. between activities).
*/
public JSONObject jsonSerialize() {
JSONObject json = new JSONObject();
JsonUtil.put(json, KEY_REQUEST, request.jsonSerialize());
JsonUtil.putIfNotNull(json, KEY_TOKEN_TYPE, tokenType);
JsonUtil.putIfNotNull(json, KEY_ACCESS_TOKEN, accessToken);
JsonUtil.putIfNotNull(json, KEY_EXPIRES_AT, accessTokenExpirationTime);
JsonUtil.putIfNotNull(json, KEY_ID_TOKEN, idToken);
JsonUtil.putIfNotNull(json, KEY_REFRESH_TOKEN, refreshToken);
JsonUtil.putIfNotNull(json, KEY_SCOPE, scope);
JsonUtil.put(json, KEY_ADDITIONAL_PARAMETERS,
JsonUtil.mapToJsonObject(additionalParameters));
return json;
}
/**
* Produces a JSON string representation of the token response for persistent storage or
* local transmission (e.g. between activities). This method is just a convenience wrapper
* for {@link #jsonSerialize()}, converting the JSON object to its string form.
*/
public String jsonSerializeString() {
return jsonSerialize().toString();
}
/**
* Reads a token response from a JSON string, and associates it with the provided request.
* If a request is not provided, its serialized form is expected to be found in the JSON
* (as if produced by a prior call to {@link #jsonSerialize()}.
* @throws JSONException if the JSON is malformed or missing required fields.
*/
@NonNull
public static TokenResponse jsonDeserialize(@NonNull JSONObject json) throws JSONException {
if (!json.has(KEY_REQUEST)) {
throw new IllegalArgumentException(
"token request not provided and not found in JSON");
}
return new TokenResponse(
TokenRequest.jsonDeserialize(json.getJSONObject(KEY_REQUEST)),
JsonUtil.getStringIfDefined(json, KEY_TOKEN_TYPE),
JsonUtil.getStringIfDefined(json, KEY_ACCESS_TOKEN),
JsonUtil.getLongIfDefined(json, KEY_EXPIRES_AT),
JsonUtil.getStringIfDefined(json, KEY_ID_TOKEN),
JsonUtil.getStringIfDefined(json, KEY_REFRESH_TOKEN),
JsonUtil.getStringIfDefined(json, KEY_SCOPE),
JsonUtil.getStringMap(json, KEY_ADDITIONAL_PARAMETERS));
}
/**
* Reads a token response from a JSON string, and associates it with the provided request.
* If a request is not provided, its serialized form is expected to be found in the JSON
* (as if produced by a prior call to {@link #jsonSerialize()}.
* @throws JSONException if the JSON is malformed or missing required fields.
*/
@NonNull
public static TokenResponse jsonDeserialize(@NonNull String jsonStr) throws JSONException {
checkNotEmpty(jsonStr, "jsonStr cannot be null or empty");
return jsonDeserialize(new JSONObject(jsonStr));
}
}