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feat(common): bolt resolver api

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Signed-off-by: rhunk <101876869+rhunk@users.noreply.github.com>
This commit is contained in:
rhunk
2025-07-01 11:27:09 +02:00
parent 0a395627ef
commit c57fbdb644
1 changed files with 14 additions and 22 deletions
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36
common/src/main/kotlin/me/rhunk/snapenhance/common/util/snap/RemoteMediaResolver.kt
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@@ -2,6 +2,7 @@ package me.rhunk.snapenhance.common.util.snap
import me.rhunk.snapenhance.common.Constants
import me.rhunk.snapenhance.common.util.ktx.await
import me.rhunk.snapenhance.common.util.protobuf.ProtoReader
import okhttp3.Headers
import okhttp3.OkHttpClient
import okhttp3.Request
@@ -9,37 +10,28 @@ import java.io.InputStream
import java.util.Base64
object RemoteMediaResolver {
private const val BOLT_HTTP_RESOLVER_URL = "https://web.snapchat.com/bolt-http"
const val CF_ST_CDN_D = "https://cf-st.sc-cdn.net/d/"
private val urlCache = mutableMapOf<String, String>()
val okHttpClient = OkHttpClient.Builder()
.followRedirects(true)
.retryOnConnectionFailure(true)
.readTimeout(20, java.util.concurrent.TimeUnit.SECONDS)
.addInterceptor { chain ->
val request = chain.request()
val requestUrl = request.url.toString()
.build()
if (urlCache.containsKey(requestUrl)) {
val cachedUrl = urlCache[requestUrl]!!
return@addInterceptor chain.proceed(request.newBuilder().url(cachedUrl).build())
}
chain.proceed(request).apply {
val responseUrl = this.request.url.toString()
if (responseUrl.startsWith("https://cf-st.sc-cdn.net")) {
urlCache[requestUrl] = responseUrl
}
}
fun newResolveRequest(protoKey: ByteArray): Request {
val protoReader = ProtoReader(protoKey)
val url = if (!protoReader.containsPath(2, 3)) {
"https://bolt-gcdn.sc-cdn.net/br/" + protoReader.getString(2, 2)
}
else {
"https://gcp.api.snapchat.com/bolt-http/resolve?co=" + Base64.getUrlEncoder().encodeToString(protoKey)
}
.build()
fun newResolveRequest(protoKey: ByteArray) = Request.Builder()
.url(BOLT_HTTP_RESOLVER_URL + "/resolve?co=" + Base64.getUrlEncoder().encodeToString(protoKey))
.addHeader("User-Agent", Constants.USER_AGENT)
.build()
return Request.Builder()
.url(url)
.addHeader("User-Agent", Constants.USER_AGENT)
.build()
}
suspend inline fun downloadMedia(url: String, decryptionCallback: (InputStream) -> InputStream = { it }, result: (InputStream, Long) -> Unit) {
okHttpClient.newCall(Request.Builder().url(url).build()).await().use { response ->