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add delete endpoint call in snode api

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This commit is contained in:
ryanzhao 2021-08-10 12:52:01 +10:00
parent c0a5a61431
commit 2cb91c3a0e
2 changed files with 45 additions and 0 deletions
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44
libsession/src/main/java/org/session/libsession/snode/SnodeAPI.kt
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@ -329,6 +329,50 @@ object SnodeAPI {
}
}
fun deleteMessage(publicKey: String, serverHashes: List<String>): Promise<Map<String,Boolean>, Exception> {
return retryIfNeeded(maxRetryCount) {
val module = MessagingModuleConfiguration.shared
val userED25519KeyPair = module.getUserED25519KeyPair() ?: return@retryIfNeeded Promise.ofFail(Error.NoKeyPair)
val userPublicKey = module.storage.getUserPublicKey() ?: return@retryIfNeeded Promise.ofFail(Error.NoKeyPair)
getSingleTargetSnode(publicKey).bind { snode ->
retryIfNeeded(maxRetryCount) {
val signature = ByteArray(Sign.BYTES)
val verificationData = (Snode.Method.DeleteMessage.rawValue + serverHashes.fold("") { a, v -> a + v }).toByteArray()
sodium.cryptoSignDetached(signature, verificationData, verificationData.size.toLong(), userED25519KeyPair.secretKey.asBytes)
val deleteMessageParams = mapOf(
"pubkey" to userPublicKey,
"pubkey_ed25519" to userED25519KeyPair.publicKey.asHexString,
"messages" to serverHashes,
"signature" to Base64.encodeBytes(signature)
)
invoke(Snode.Method.DeleteMessage, snode, publicKey, deleteMessageParams).map { rawResponse ->
val swarms = rawResponse["swarm"] as? Map<String, Any> ?: return@map mapOf()
val result = swarms.mapNotNull { (hexSnodePublicKey, rawJSON) ->
val json = rawJSON as? Map<String, Any> ?: return@mapNotNull null
val isFailed = json["failed"] as? Boolean ?: false
val statusCode = json["code"] as? String
val reason = json["reason"] as? String
hexSnodePublicKey to if (isFailed) {
Log.e("Loki", "Failed to delete messages from: $hexSnodePublicKey due to error: $reason ($statusCode).")
false
} else {
val hashes = json["deleted"] as List<String> // Hashes of deleted messages
val signature = json["signature"] as String
val snodePublicKey = Key.fromHexString(hexSnodePublicKey)
// The signature looks like ( PUBKEY_HEX || RMSG[0] || ... || RMSG[N] || DMSG[0] || ... || DMSG[M] )
val message = (userPublicKey + serverHashes.fold("") { a, v -> a + v } + hashes.fold("") { a, v -> a + v }).toByteArray()
sodium.cryptoSignVerifyDetached(Base64.decode(signature), message, message.size, snodePublicKey.asBytes)
}
}
return@map result.toMap()
}.fail { e ->
Log.e("Loki", "Failed to delete messages", e)
}
}
}
}
}
// Parsing
private fun parseSnodes(rawResponse: Any): List<Snode> {
val json = rawResponse as? Map<*, *>

1
libsignal/src/main/java/org/session/libsignal/utilities/Snode.kt
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@ -7,6 +7,7 @@ class Snode(val address: String, val port: Int, val publicKeySet: KeySet?) {
GetSwarm("get_snodes_for_pubkey"),
GetMessages("retrieve"),
SendMessage("store"),
DeleteMessage("delete"),
OxenDaemonRPCCall("oxend_request"),
Info("info"),
DeleteAll("delete_all")