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Merge branch 'main' of https://github.com/xmtp/xmtp-android into np/r…
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70 changes: 70 additions & 0 deletions
70
library/src/androidTest/java/org/xmtp/android/library/FramesTest.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,70 @@ | ||
| package org.xmtp.android.library | ||
|
|
||
| import androidx.test.ext.junit.runners.AndroidJUnit4 | ||
| import kotlinx.coroutines.runBlocking | ||
| import org.junit.Assert.assertEquals | ||
| import org.junit.Assert.assertNotNull | ||
| import org.junit.Test | ||
| import org.junit.runner.RunWith | ||
| import org.xmtp.android.library.frames.ConversationActionInputs | ||
| import org.xmtp.android.library.frames.DmActionInputs | ||
| import org.xmtp.android.library.frames.FrameActionInputs | ||
| import org.xmtp.android.library.frames.FramePostPayload | ||
| import org.xmtp.android.library.frames.FramesClient | ||
| import org.xmtp.android.library.frames.GetMetadataResponse | ||
| import java.net.HttpURLConnection | ||
| import java.net.URL | ||
|
|
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| @RunWith(AndroidJUnit4::class) | ||
| class FramesTest { | ||
| @Test | ||
| fun testFramesClient() { | ||
| val frameUrl = | ||
| "https://fc-polls-five.vercel.app/polls/03710836-bc1d-4921-9e24-89d82015c53b?env=dev" | ||
| val fixtures = fixtures(ClientOptions.Api(XMTPEnvironment.DEV, isSecure = true)) | ||
| val framesClient = FramesClient(xmtpClient = fixtures.alixClient) | ||
| val conversationTopic = "foo" | ||
| val participantAccountAddresses = listOf("alix", "bo") | ||
| val metadata: GetMetadataResponse | ||
| runBlocking { | ||
| metadata = framesClient.proxy.readMetadata(url = frameUrl) | ||
| } | ||
|
|
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| val dmInputs = DmActionInputs( | ||
| conversationTopic = conversationTopic, | ||
| participantAccountAddresses = participantAccountAddresses | ||
| ) | ||
| val conversationInputs = ConversationActionInputs.Dm(dmInputs) | ||
| val frameInputs = FrameActionInputs( | ||
| frameUrl = frameUrl, | ||
| buttonIndex = 1, | ||
| inputText = null, | ||
| state = null, | ||
| conversationInputs = conversationInputs | ||
| ) | ||
| val signedPayload: FramePostPayload | ||
| runBlocking { | ||
| signedPayload = framesClient.signFrameAction(inputs = frameInputs) | ||
| } | ||
| val postUrl = metadata.extractedTags["fc:frame:post_url"] | ||
| assertNotNull(postUrl) | ||
| val response: GetMetadataResponse | ||
| runBlocking { | ||
| response = framesClient.proxy.post(url = postUrl!!, payload = signedPayload) | ||
| } | ||
|
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| assertEquals(response.extractedTags["fc:frame"], "vNext") | ||
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| val imageUrl = response.extractedTags["fc:frame:image"] | ||
| assertNotNull(imageUrl) | ||
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| val mediaUrl = framesClient.proxy.mediaUrl(url = imageUrl!!) | ||
|
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| val url = URL(mediaUrl) | ||
| val connection = url.openConnection() as HttpURLConnection | ||
| connection.requestMethod = "GET" | ||
| val responseCode = connection.responseCode | ||
| assertEquals(responseCode, 200) | ||
| assertEquals(connection.contentType, "image/png") | ||
| } | ||
| } |
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99
library/src/main/java/org/xmtp/android/library/frames/FramesClient.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,99 @@ | ||
| package org.xmtp.android.library.frames | ||
|
|
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| import android.util.Base64 | ||
| import com.google.protobuf.kotlin.toByteString | ||
| import org.xmtp.android.library.Client | ||
| import org.xmtp.android.library.XMTPException | ||
| import org.xmtp.android.library.frames.FramesConstants.PROTOCOL_VERSION | ||
| import org.xmtp.android.library.hexToByteArray | ||
| import org.xmtp.android.library.toHex | ||
| import org.xmtp.proto.message.contents.Frames.FrameAction | ||
| import org.xmtp.proto.message.contents.Frames.FrameActionBody | ||
| import java.security.MessageDigest | ||
| import java.util.Date | ||
|
|
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| class FramesClient(private val xmtpClient: Client, var proxy: OpenFramesProxy = OpenFramesProxy()) { | ||
|
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| suspend fun signFrameAction(inputs: FrameActionInputs): FramePostPayload { | ||
| val opaqueConversationIdentifier = buildOpaqueIdentifier(inputs) | ||
| val frameUrl = inputs.frameUrl | ||
| val buttonIndex = inputs.buttonIndex | ||
| val inputText = inputs.inputText | ||
| val state = inputs.state | ||
| val now = Date().time / 1_000 | ||
| val frameActionBuilder = FrameActionBody.newBuilder().also { frame -> | ||
| frame.frameUrl = frameUrl | ||
| frame.buttonIndex = buttonIndex | ||
| frame.opaqueConversationIdentifier = opaqueConversationIdentifier | ||
| frame.unixTimestamp = now.toInt() | ||
| if (inputText != null) { | ||
| frame.inputText = inputText | ||
| } | ||
| if (state != null) { | ||
| frame.state = state | ||
| } | ||
| } | ||
|
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| val toSign = frameActionBuilder.build() | ||
| val signedAction = Base64.encodeToString(buildSignedFrameAction(toSign), Base64.NO_WRAP) | ||
|
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| val untrustedData = FramePostUntrustedData( | ||
| frameUrl, | ||
| now, | ||
| buttonIndex, | ||
| inputText, | ||
| state, | ||
| xmtpClient.address, | ||
| opaqueConversationIdentifier, | ||
| now.toInt() | ||
| ) | ||
| val trustedData = FramePostTrustedData(signedAction) | ||
|
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| return FramePostPayload("xmtp@$PROTOCOL_VERSION", untrustedData, trustedData) | ||
| } | ||
|
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| private fun signDigest(message: String): ByteArray { | ||
| return xmtpClient.signWithInstallationKey(message) | ||
| } | ||
|
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| private fun buildSignedFrameAction(actionBodyInputs: FrameActionBody): ByteArray { | ||
| val digest = sha256(actionBodyInputs.toByteArray()).toHex() | ||
| val signature = signDigest(digest) | ||
|
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| val frameAction = FrameAction.newBuilder().also { | ||
| it.actionBody = actionBodyInputs.toByteString() | ||
| it.installationSignature = signature.toByteString() | ||
| it.installationId = xmtpClient.installationId.hexToByteArray().toByteString() | ||
| it.inboxId = xmtpClient.inboxId | ||
| }.build() | ||
|
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| return frameAction.toByteArray() | ||
| } | ||
|
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| private fun buildOpaqueIdentifier(inputs: FrameActionInputs): String { | ||
| return when (inputs.conversationInputs) { | ||
| is ConversationActionInputs.Group -> { | ||
| val groupInputs = inputs.conversationInputs.inputs | ||
| val combined = groupInputs.groupId + groupInputs.groupSecret | ||
| val digest = sha256(combined) | ||
| Base64.encodeToString(digest, Base64.NO_WRAP) | ||
| } | ||
|
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| is ConversationActionInputs.Dm -> { | ||
| val dmInputs = inputs.conversationInputs.inputs | ||
| val conversationTopic = | ||
| dmInputs.conversationTopic ?: throw XMTPException("No conversation topic") | ||
| val combined = | ||
| conversationTopic.lowercase() + dmInputs.participantAccountAddresses.map { it.lowercase() } | ||
| .sorted().joinToString("") | ||
| val digest = sha256(combined.toByteArray()) | ||
| Base64.encodeToString(digest, Base64.NO_WRAP) | ||
| } | ||
| } | ||
| } | ||
|
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| private fun sha256(input: ByteArray): ByteArray { | ||
| val digest = MessageDigest.getInstance("SHA-256") | ||
| return digest.digest(input) | ||
| } | ||
| } |