feat(extractors): add up4stream extractor (#2389)

Author: Bnyro

library/src/commonMain/kotlin/com/lagradost/cloudstream3/extractors/Up4Stream.kt

@@ -0,0 +1,60 @@
+package com.lagradost.cloudstream3.extractors
+
+import com.lagradost.api.Log
+import com.lagradost.cloudstream3.app
+import com.lagradost.cloudstream3.utils.ExtractorApi
+import com.lagradost.cloudstream3.utils.ExtractorLink
+import com.lagradost.cloudstream3.utils.JsUnpacker
+import com.lagradost.cloudstream3.utils.Qualities
+import com.lagradost.cloudstream3.utils.fixUrl
+import com.lagradost.cloudstream3.utils.newExtractorLink
+import kotlinx.coroutines.delay
+
+class Up4FunTop : Up4Stream() {
+    override var mainUrl: String = "https://up4fun.top"
+}
+
+open class Up4Stream : ExtractorApi() {
+    override var name = "Up4Stream"
+    override var mainUrl = "https://up4stream.com"
+    override val requiresReferer = true
+
+    override suspend fun getUrl(url: String, referer: String?): List<ExtractorLink>? {
+        val movieId = url.substringAfterLast("/").substringBefore(".html")
+
+        // redirect from "wait 5 seconds" page to actual movie page
+        val redirectResponse = app.get(url, cookies = mapOf("id" to movieId))
+        val redirectForm = redirectResponse.document.selectFirst("form[method=POST]") ?: return null
+        val redirectUrl = fixUrl(redirectForm.attr("action"))
+        val redirectParams = redirectForm.select("input[type=hidden]").associate { input ->
+            input.attr("name") to input.attr("value")
+        }
+
+        // wait for 5 seconds, otherwise the below md5 hash is invalid
+        delay(5000)
+        val response = app.post(redirectUrl, data = redirectParams).document
+
+        // starting here, this works similar to many other extractors like StreamWish
+        val extractedpack =
+            response.selectFirst("script:containsData(function(p,a,c,k,e,d))")?.data()
+        if (extractedpack == null) {
+            Log.e("up4stream", "file not ready: delay too short")
+        }
+
+        JsUnpacker(extractedpack).unpack()?.let { unPacked ->
+            Regex("sources:\\[\\{file:\"(.*?)\"").find(unPacked)?.groupValues?.get(1)?.let { link ->
+                return listOf(
+                    newExtractorLink(
+                        this.name,
+                        this.name,
+                        link,
+                    ) {
+                        this.referer = referer.orEmpty()
+                        this.quality = Qualities.Unknown.value
+                    }
+                )
+            }
+        }
+        return null
+    }
+}

library/src/commonMain/kotlin/com/lagradost/cloudstream3/utils/ExtractorApi.kt

@@ -230,6 +230,8 @@ import com.lagradost.cloudstream3.extractors.Techinmind
 import com.lagradost.cloudstream3.extractors.Tomatomatela
 import com.lagradost.cloudstream3.extractors.TomatomatelalClub
 import com.lagradost.cloudstream3.extractors.Tubeless
+import com.lagradost.cloudstream3.extractors.Up4FunTop
+import com.lagradost.cloudstream3.extractors.Up4Stream
 import com.lagradost.cloudstream3.extractors.Upstream
 import com.lagradost.cloudstream3.extractors.UpstreamExtractor
 import com.lagradost.cloudstream3.extractors.Uqload
@@ -1223,6 +1225,8 @@ val extractorApis: MutableList<ExtractorApi> = arrayListOf(
     VkExtractor(),
     Bysezejataos(),
     ByseSX(),
+    Up4Stream(),
+    Up4FunTop()
 )