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Fix Cloudflare Interceptor when User-Agent is Empty (#2677)

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This commit is contained in:
Thiago França da Silva 2020-03-08 23:34:57 -03:00 committed by GitHub
parent 48363aa3b0
commit fb5da15746
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1 changed files with 19 additions and 3 deletions
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22
app/src/main/java/eu/kanade/tachiyomi/network/CloudflareInterceptor.kt
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@ -55,7 +55,19 @@ class CloudflareInterceptor(private val context: Context) : Interceptor {
val oldCookie = networkHelper.cookieManager.get(originalRequest.url)
.firstOrNull { it.name == "cf_clearance" }
resolveWithWebView(originalRequest, oldCookie)
return chain.proceed(originalRequest)
// Avoid use empty User-Agent
return if (originalRequest.header("User-Agent").isNullOrEmpty()) {
val newRequest = originalRequest
.newBuilder()
.removeHeader("User-Agent")
.addHeader("User-Agent",
DEFAULT_USERAGENT)
.build()
chain.proceed(newRequest)
} else {
chain.proceed(originalRequest)
}
} catch (e: Exception) {
// Because OkHttp's enqueue only handles IOExceptions, wrap the exception so that
// we don't crash the entire app
@ -77,20 +89,23 @@ class CloudflareInterceptor(private val context: Context) : Interceptor {
val origRequestUrl = request.url.toString()
val headers = request.headers.toMultimap().mapValues { it.value.getOrNull(0) ?: "" }
val withUserAgent = request.header("User-Agent").isNullOrEmpty()
handler.post {
val webview = WebView(context)
webView = webview
webview.settings.javaScriptEnabled = true
// Avoid set empty User-Agent, Chromium WebView will reset to default if empty
webview.settings.userAgentString = request.header("User-Agent")
?: DEFAULT_USERAGENT
webview.webViewClient = object : WebViewClientCompat() {
override fun onPageFinished(view: WebView, url: String) {
fun isCloudFlareBypassed(): Boolean {
return networkHelper.cookieManager.get(origRequestUrl.toHttpUrl())
.firstOrNull { it.name == "cf_clearance" }
.let { it != null && it != oldCookie }
.let { it != null && (it != oldCookie || withUserAgent) }
}
if (isCloudFlareBypassed()) {
@ -156,5 +171,6 @@ class CloudflareInterceptor(private val context: Context) : Interceptor {
companion object {
private val SERVER_CHECK = arrayOf("cloudflare-nginx", "cloudflare")
private val COOKIE_NAMES = listOf("__cfduid", "cf_clearance")
private const val DEFAULT_USERAGENT = "Mozilla/5.0 (Windows NT 6.3; WOW64)"
}
}