kopia lustrzana https://github.com/vitorpamplona/amethyst
93 wiersze
3.7 KiB
Kotlin
93 wiersze
3.7 KiB
Kotlin
package com.vitorpamplona.quartz.events
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import androidx.compose.runtime.Immutable
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import com.vitorpamplona.quartz.utils.TimeUtils
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import com.vitorpamplona.quartz.encoders.toHexKey
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import com.vitorpamplona.quartz.crypto.CryptoUtils
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import com.vitorpamplona.quartz.crypto.KeyPair
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import com.vitorpamplona.quartz.encoders.HexKey
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@Immutable
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class FileHeaderEvent(
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id: HexKey,
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pubKey: HexKey,
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createdAt: Long,
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tags: List<List<String>>,
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content: String,
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sig: HexKey
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) : Event(id, pubKey, createdAt, kind, tags, content, sig) {
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fun url() = tags.firstOrNull { it.size > 1 && it[0] == URL }?.get(1)
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fun encryptionKey() = tags.firstOrNull { it.size > 2 && it[0] == ENCRYPTION_KEY }?.let { AESGCM(it[1], it[2]) }
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fun mimeType() = tags.firstOrNull { it.size > 1 && it[0] == MIME_TYPE }?.get(1)
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fun hash() = tags.firstOrNull { it.size > 1 && it[0] == HASH }?.get(1)
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fun size() = tags.firstOrNull { it.size > 1 && it[0] == FILE_SIZE }?.get(1)
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fun alt() = tags.firstOrNull { it.size > 1 && it[0] == ALT }?.get(1)
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fun dimensions() = tags.firstOrNull { it.size > 1 && it[0] == DIMENSION }?.get(1)
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fun magnetURI() = tags.firstOrNull { it.size > 1 && it[0] == MAGNET_URI }?.get(1)
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fun torrentInfoHash() = tags.firstOrNull { it.size > 1 && it[0] == TORRENT_INFOHASH }?.get(1)
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fun blurhash() = tags.firstOrNull { it.size > 1 && it[0] == BLUR_HASH }?.get(1)
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fun hasUrl() = tags.any { it.size > 1 && it[0] == URL }
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companion object {
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const val kind = 1063
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private const val URL = "url"
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private const val ENCRYPTION_KEY = "aes-256-gcm"
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private const val MIME_TYPE = "m"
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private const val FILE_SIZE = "size"
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private const val DIMENSION = "dim"
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private const val HASH = "x"
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private const val MAGNET_URI = "magnet"
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private const val TORRENT_INFOHASH = "i"
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private const val BLUR_HASH = "blurhash"
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private const val ALT = "alt"
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fun create(
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url: String,
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mimeType: String? = null,
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alt: String? = null,
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hash: String? = null,
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size: String? = null,
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dimensions: String? = null,
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blurhash: String? = null,
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magnetURI: String? = null,
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torrentInfoHash: String? = null,
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encryptionKey: AESGCM? = null,
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sensitiveContent: Boolean? = null,
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keyPair: KeyPair,
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createdAt: Long = TimeUtils.now()
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): FileHeaderEvent {
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val tags = listOfNotNull(
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listOf(URL, url),
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mimeType?.let { listOf(MIME_TYPE, mimeType) },
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alt?.ifBlank { null }?.let { listOf(ALT, it) },
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hash?.let { listOf(HASH, it) },
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size?.let { listOf(FILE_SIZE, it) },
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dimensions?.let { listOf(DIMENSION, it) },
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blurhash?.let { listOf(BLUR_HASH, it) },
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magnetURI?.let { listOf(MAGNET_URI, it) },
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torrentInfoHash?.let { listOf(TORRENT_INFOHASH, it) },
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encryptionKey?.let { listOf(ENCRYPTION_KEY, it.key, it.nonce) },
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sensitiveContent?.let {
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if (it) {
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listOf("content-warning", "")
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} else {
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null
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}
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}
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)
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val content = alt ?: ""
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val pubKey = keyPair.pubKey.toHexKey()
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val id = generateId(pubKey, createdAt, kind, tags, content)
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val sig = if (keyPair.privKey == null) null else CryptoUtils.sign(id, keyPair.privKey)
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return FileHeaderEvent(id.toHexKey(), pubKey, createdAt, tags, content, sig?.toHexKey() ?: "")
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}
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}
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}
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data class AESGCM(val key: String, val nonce: String)
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