BayernMessenger/matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/events/model/Event.kt

320 lines
11 KiB
Kotlin

/*
* Copyright 2019 New Vector Ltd
*
* 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 im.vector.matrix.android.api.session.events.model
import android.text.TextUtils
import com.squareup.moshi.Json
import com.squareup.moshi.JsonClass
import im.vector.matrix.android.api.session.crypto.MXCryptoError
import im.vector.matrix.android.api.session.room.model.message.MessageContent
import im.vector.matrix.android.api.session.room.model.message.MessageType
import im.vector.matrix.android.api.session.room.send.SendState
import im.vector.matrix.android.api.util.JsonDict
import im.vector.matrix.android.internal.crypto.algorithms.olm.OlmDecryptionResult
import im.vector.matrix.android.internal.di.MoshiProvider
import org.json.JSONObject
import timber.log.Timber
typealias Content = JsonDict
/**
* This methods is a facility method to map a json content to a model.
*/
inline fun <reified T> Content?.toModel(catchError: Boolean = true): T? {
return this?.let {
val moshi = MoshiProvider.providesMoshi()
val moshiAdapter = moshi.adapter(T::class.java)
return try {
moshiAdapter.fromJsonValue(it)
} catch (e: Exception) {
if (catchError) {
Timber.e(e, "To model failed : $e")
null
} else {
throw e
}
}
}
}
/**
* This methods is a facility method to map a model to a json Content
*/
@Suppress("UNCHECKED_CAST")
inline fun <reified T> T?.toContent(): Content? {
return this?.let {
val moshi = MoshiProvider.providesMoshi()
val moshiAdapter = moshi.adapter(T::class.java)
return moshiAdapter.toJsonValue(it) as Content
}
}
/**
* Generic event class with all possible fields for events.
* The content and prevContent json fields can easily be mapped to a model with [toModel] method.
*/
@JsonClass(generateAdapter = true)
data class Event(
@Json(name = "type") val type: String,
@Json(name = "event_id") val eventId: String? = null,
@Json(name = "content") val content: Content? = null,
@Json(name = "prev_content") val prevContent: Content? = null,
@Json(name = "origin_server_ts") val originServerTs: Long? = null,
@Json(name = "sender") val senderId: String? = null,
@Json(name = "state_key") val stateKey: String? = null,
@Json(name = "room_id") val roomId: String? = null,
@Json(name = "unsigned") val unsignedData: UnsignedData? = null,
@Json(name = "redacts") val redacts: String? = null
) {
var mxDecryptionResult: OlmDecryptionResult? = null
var mCryptoError: MXCryptoError.ErrorType? = null
var sendState: SendState = SendState.UNKNOWN
/**
* Check if event is a state event.
* @return true if event is state event.
*/
fun isStateEvent(): Boolean {
return EventType.isStateEvent(getClearType())
}
//==============================================================================================================
// Crypto
//==============================================================================================================
// /**
// * For encrypted events, the plaintext payload for the event.
// * This is a small MXEvent instance with typically value for `type` and 'content' fields.
// */
// @Transient
// var mClearEvent: Event? = null
// private set
//
// /**
// * Curve25519 key which we believe belongs to the sender of the event.
// * See `senderKey` property.
// */
// @Transient
// private var mSenderCurve25519Key: String? = null
//
// /**
// * Ed25519 key which the sender of this event (for olm) or the creator of the megolm session (for megolm) claims to own.
// * See `claimedEd25519Key` property.
// */
// @Transient
// private var mClaimedEd25519Key: String? = null
//
// /**
// * Curve25519 keys of devices involved in telling us about the senderCurve25519Key and claimedEd25519Key.
// * See `forwardingCurve25519KeyChain` property.
// */
// @Transient
// private var mForwardingCurve25519KeyChain: List<String> = ArrayList()
//
// /**
// * Decryption error
// */
// @Transient
// var mCryptoError: MXCryptoError? = null
// private set
/**
* @return true if this event is encrypted.
*/
fun isEncrypted(): Boolean {
return TextUtils.equals(type, EventType.ENCRYPTED)
}
/**
* Update the clear data on this event.
* This is used after decrypting an event; it should not be used by applications.
*
* @param decryptionResult the decryption result, including the plaintext and some key info.
*/
// internal fun setClearData(decryptionResult: MXEventDecryptionResult?) {
// mClearEvent = null
// if (decryptionResult != null) {
// if (decryptionResult.clearEvent != null) {
// val adapter = MoshiProvider.providesMoshi().adapter(Event::class.java)
// mClearEvent = adapter.fromJsonValue(decryptionResult.clearEvent)
//
// if (mClearEvent != null) {
// mSenderCurve25519Key = decryptionResult.senderCurve25519Key
// mClaimedEd25519Key = decryptionResult.claimedEd25519Key
// mForwardingCurve25519KeyChain = decryptionResult.forwardingCurve25519KeyChain
//
// // For encrypted events with relation, the m.relates_to is kept in clear, so we need to put it back
// // in the clear event
// try {
// content?.get("m.relates_to")?.let { clearRelates ->
// mClearEvent = mClearEvent?.copy(
// content = HashMap(mClearEvent!!.content).apply {
// this["m.relates_to"] = clearRelates
// }
// )
// }
// } catch (e: Exception) {
// Timber.e(e, "Unable to restore 'm.relates_to' the clear event")
// }
// }
//
//
// }
// }
// mCryptoError = null
// }
/**
* @return The curve25519 key that sent this event.
*/
fun getSenderKey(): String? {
return mxDecryptionResult?.senderKey
// return mClearEvent?.mSenderCurve25519Key ?: mSenderCurve25519Key
}
/**
* @return The additional keys the sender of this encrypted event claims to possess.
*/
fun getKeysClaimed(): Map<String, String> {
return mxDecryptionResult?.keysClaimed ?: HashMap()
// val res = HashMap<String, String>()
//
// val claimedEd25519Key = if (null != mClearEvent) mClearEvent!!.mClaimedEd25519Key else mClaimedEd25519Key
//
// if (null != claimedEd25519Key) {
// res["ed25519"] = claimedEd25519Key
// }
//
// return res
}
//
/**
* @return the event type
*/
fun getClearType(): String {
return mxDecryptionResult?.payload?.get("type")?.toString()
?: type//get("type")?.toString() ?: type
}
/**
* @return the event content
*/
fun getClearContent(): Content? {
return mxDecryptionResult?.payload?.get("content") as? Content ?: content
}
// /**
// * @return the linked crypto error
// */
// fun getCryptoError(): MXCryptoError? {
// return mCryptoError
// }
//
// /**
// * Update the linked crypto error
// *
// * @param error the new crypto error.
// */
// fun setCryptoError(error: MXCryptoError?) {
// mCryptoError = error
// if (null != error) {
// mClearEvent = null
// }
// }
fun toContentStringWithIndent(): String {
val contentMap = this.toContent()?.toMutableMap() ?: HashMap()
contentMap.remove("mxDecryptionResult")
contentMap.remove("mCryptoError")
return JSONObject(contentMap).toString(4)
}
fun toClearContentStringWithIndent(): String? {
val contentMap = this.mxDecryptionResult?.payload?.toMutableMap()
val adapter = MoshiProvider.providesMoshi().adapter(Map::class.java)
return contentMap?.let { JSONObject(adapter.toJson(it)).toString(4) }
}
/**
* Tells if the event is redacted
*/
fun isRedacted() = unsignedData?.redactedEvent != null
override fun equals(other: Any?): Boolean {
if (this === other) return true
if (javaClass != other?.javaClass) return false
other as Event
if (type != other.type) return false
if (eventId != other.eventId) return false
if (content != other.content) return false
if (prevContent != other.prevContent) return false
if (originServerTs != other.originServerTs) return false
if (senderId != other.senderId) return false
if (stateKey != other.stateKey) return false
if (roomId != other.roomId) return false
if (unsignedData != other.unsignedData) return false
if (redacts != other.redacts) return false
if (mxDecryptionResult != other.mxDecryptionResult) return false
if (mCryptoError != other.mCryptoError) return false
if (sendState != other.sendState) return false
return true
}
override fun hashCode(): Int {
var result = type.hashCode()
result = 31 * result + (eventId?.hashCode() ?: 0)
result = 31 * result + (content?.hashCode() ?: 0)
result = 31 * result + (prevContent?.hashCode() ?: 0)
result = 31 * result + (originServerTs?.hashCode() ?: 0)
result = 31 * result + (senderId?.hashCode() ?: 0)
result = 31 * result + (stateKey?.hashCode() ?: 0)
result = 31 * result + (roomId?.hashCode() ?: 0)
result = 31 * result + (unsignedData?.hashCode() ?: 0)
result = 31 * result + (redacts?.hashCode() ?: 0)
result = 31 * result + (mxDecryptionResult?.hashCode() ?: 0)
result = 31 * result + (mCryptoError?.hashCode() ?: 0)
result = 31 * result + sendState.hashCode()
return result
}
}
fun Event.isTextMessage(): Boolean {
return getClearType() == EventType.MESSAGE
&& when (getClearContent()?.toModel<MessageContent>()?.type) {
MessageType.MSGTYPE_TEXT,
MessageType.MSGTYPE_EMOTE,
MessageType.MSGTYPE_NOTICE -> true
else -> false
}
}
fun Event.isImageMessage(): Boolean {
return getClearType() == EventType.MESSAGE
&& when (getClearContent()?.toModel<MessageContent>()?.type) {
MessageType.MSGTYPE_IMAGE -> true
else -> false
}
}