/*
* Copyright 2022 The Android Open Source Project
*
* 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 androidx.credentials
import android.os.Bundle
import androidx.annotation.RequiresApi
import androidx.credentials.PublicKeyCredential.Companion.BUNDLE_KEY_SUBTYPE
import androidx.credentials.internal.FrameworkClassParsingException
import org.json.JSONObject
/**
* A request to register a passkey from the user's public key credential provider.
*
* @param requestJson the request in JSON format in the [standard webauthn web json](https://w3c.github.io/webauthn/#dictdef-publickeycredentialcreationoptionsjson).
* @param clientDataHash a hash that is used to verify the origin
* @param preferImmediatelyAvailableCredentials true if you prefer the operation to return
* immediately when there is no available passkey registration offering instead of falling back to
* discovering remote options, and false (default) otherwise
* @param origin the origin of a different application if the request is being made on behalf of
* that application. For API level >=34, setting a non-null value for this parameter, will throw
* a SecurityException if android.permission.CREDENTIAL_MANAGER_SET_ORIGIN is not present.
*/
class CreatePublicKeyCredentialRequest private constructor(
val requestJson: String,
val clientDataHash: String?,
@get:JvmName("preferImmediatelyAvailableCredentials")
val preferImmediatelyAvailableCredentials: Boolean,
displayInfo: DisplayInfo,
origin: String? = null,
) : CreateCredentialRequest(
type = PublicKeyCredential.TYPE_PUBLIC_KEY_CREDENTIAL,
credentialData = toCredentialDataBundle(requestJson, clientDataHash,
preferImmediatelyAvailableCredentials),
// The whole request data should be passed during the query phase.
candidateQueryData = toCredentialDataBundle(requestJson, clientDataHash,
preferImmediatelyAvailableCredentials),
isSystemProviderRequired = false,
isAutoSelectAllowed = false,
displayInfo,
origin
) {
/**
* Constructs a [CreatePublicKeyCredentialRequest] to register a passkey from the user's public key credential provider.
*
* @param requestJson the privileged request in JSON format in the [standard webauthn web json](https://w3c.github.io/webauthn/#dictdef-publickeycredentialcreationoptionsjson).
* @param clientDataHash a hash that is used to verify the relying party identity
* @param preferImmediatelyAvailableCredentials true if you prefer the operation to return
* immediately when there is no available passkey registration offering instead of falling back to
* discovering remote options, and false (default) otherwise
* @param origin the origin of a different application if the request is being made on behalf of
* that application. For API level >=34, setting a non-null value for this parameter, will throw
* a SecurityException if android.permission.CREDENTIAL_MANAGER_SET_ORIGIN is not present.
* @throws NullPointerException If [requestJson] is null
* @throws IllegalArgumentException If [requestJson] is empty, or if it doesn't have a valid
* `user.name` defined according to the [webauthn spec](https://w3c.github.io/webauthn/#dictdef-publickeycredentialcreationoptionsjson)
*/
@JvmOverloads constructor(
requestJson: String,
clientDataHash: String? = null,
preferImmediatelyAvailableCredentials: Boolean = false,
origin: String? = null
) : this(requestJson, clientDataHash, preferImmediatelyAvailableCredentials,
getRequestDisplayInfo(requestJson), origin)
init {
require(requestJson.isNotEmpty()) { "requestJson must not be empty" }
}
/** @hide */
companion object {
internal const val BUNDLE_KEY_PREFER_IMMEDIATELY_AVAILABLE_CREDENTIALS =
"androidx.credentials.BUNDLE_KEY_PREFER_IMMEDIATELY_AVAILABLE_CREDENTIALS"
internal const val BUNDLE_KEY_CLIENT_DATA_HASH =
"androidx.credentials.BUNDLE_KEY_CLIENT_DATA_HASH"
internal const val BUNDLE_KEY_REQUEST_JSON = "androidx.credentials.BUNDLE_KEY_REQUEST_JSON"
internal const val BUNDLE_VALUE_SUBTYPE_CREATE_PUBLIC_KEY_CREDENTIAL_REQUEST =
"androidx.credentials.BUNDLE_VALUE_SUBTYPE_CREATE_PUBLIC_KEY_CREDENTIAL_REQUEST"
@JvmStatic
internal fun getRequestDisplayInfo(requestJson: String): DisplayInfo {
return try {
val json = JSONObject(requestJson)
val user = json.getJSONObject("user")
val userName = user.getString("name")
val displayName: String? =
if (user.isNull("displayName")) null else user.getString("displayName")
DisplayInfo(userName, displayName)
} catch (e: Exception) {
throw IllegalArgumentException("user.name must be defined in requestJson")
}
}
@JvmStatic
internal fun toCredentialDataBundle(
requestJson: String,
clientDataHash: String? = null,
preferImmediatelyAvailableCredentials: Boolean
): Bundle {
val bundle = Bundle()
bundle.putString(
BUNDLE_KEY_SUBTYPE,
BUNDLE_VALUE_SUBTYPE_CREATE_PUBLIC_KEY_CREDENTIAL_REQUEST
)
bundle.putString(BUNDLE_KEY_REQUEST_JSON, requestJson)
bundle.putString(BUNDLE_KEY_CLIENT_DATA_HASH, clientDataHash)
bundle.putBoolean(
BUNDLE_KEY_PREFER_IMMEDIATELY_AVAILABLE_CREDENTIALS,
preferImmediatelyAvailableCredentials
)
return bundle
}
@JvmStatic
internal fun toCandidateDataBundle(
requestJson: String,
clientDataHash: String?,
preferImmediatelyAvailableCredentials: Boolean
): Bundle {
val bundle = Bundle()
bundle.putString(
BUNDLE_KEY_SUBTYPE,
BUNDLE_VALUE_SUBTYPE_CREATE_PUBLIC_KEY_CREDENTIAL_REQUEST
)
bundle.putString(BUNDLE_KEY_REQUEST_JSON, requestJson)
bundle.putString(BUNDLE_KEY_CLIENT_DATA_HASH, clientDataHash)
bundle.putBoolean(
BUNDLE_KEY_PREFER_IMMEDIATELY_AVAILABLE_CREDENTIALS,
preferImmediatelyAvailableCredentials
)
return bundle
}
@Suppress("deprecation") // bundle.get() used for boolean value
// to prevent default boolean value from being returned.
@JvmStatic
@RequiresApi(23)
internal fun createFrom(data: Bundle, origin: String? = null):
CreatePublicKeyCredentialRequest {
try {
val requestJson = data.getString(BUNDLE_KEY_REQUEST_JSON)
val clientDataHash = data.getString(BUNDLE_KEY_CLIENT_DATA_HASH)
val preferImmediatelyAvailableCredentials =
data.get(BUNDLE_KEY_PREFER_IMMEDIATELY_AVAILABLE_CREDENTIALS)
val displayInfo = DisplayInfo.parseFromCredentialDataBundle(data)
return if (displayInfo == null) CreatePublicKeyCredentialRequest(
requestJson!!,
clientDataHash,
(preferImmediatelyAvailableCredentials!!) as Boolean,
origin
) else CreatePublicKeyCredentialRequest(
requestJson!!,
clientDataHash,
(preferImmediatelyAvailableCredentials!!) as Boolean,
displayInfo,
origin
)
} catch (e: Exception) {
throw FrameworkClassParsingException()
}
}
}
}