59 lines
2.0 KiB
Kotlin
59 lines
2.0 KiB
Kotlin
package com.causa_arcana
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import android.content.Context
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import android.webkit.WebResourceRequest
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import android.webkit.WebResourceResponse
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import android.webkit.WebView
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import android.webkit.WebViewClient
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class CustomWebViewClient(private val context: Context) : WebViewClient() {
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companion object {
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private const val HOST = "causa-arcana.com"
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private const val SCHEME = "https"
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private const val NO_PORT = -1
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private const val PORT = 443
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}
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override fun shouldInterceptRequest(
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view: WebView?,
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request: WebResourceRequest,
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): WebResourceResponse? {
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if (!relatedHost(request)) return super.shouldInterceptRequest(view, request)
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if (!validComponents(request)) return teapotResponse()
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return when (request.url.path) {
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"/assets/images/blog/decentralized-vs-distributed-wrong.png" ->
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assetResponse("image/png",
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"decentralized-vs-distributed-wrong.png")
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"/assets/images/blog/network-topologies.png" ->
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assetResponse("image/png", "network-topologies.png")
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else -> teapotResponse()
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}
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}
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private fun relatedHost(request: WebResourceRequest): Boolean {
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return request.url.host?.lowercase() == HOST
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}
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private fun validComponents(request: WebResourceRequest): Boolean {
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return request.url.scheme?.lowercase() == SCHEME &&
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request.url.userInfo == null &&
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(request.url.port == NO_PORT || request.url.port == PORT) &&
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request.url.query == null &&
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request.url.fragment == null
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}
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private fun teapotResponse(): WebResourceResponse {
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return WebResourceResponse(
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"text/plain", "utf-8", 418, "I'm a teapot",
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null, null,
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)
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}
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private fun assetResponse(mimeType: String, assetFileName: String):
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WebResourceResponse {
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return WebResourceResponse(mimeType, "utf-8", context.assets.open(assetFileName))
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}
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}
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