Fix IP ban error message and parse error logging (#979)

app/src/main/kotlin/com/hippo/ehviewer/client/EhEngine.kt

@@ -60,7 +60,6 @@ import io.ktor.client.statement.bodyAsChannel
 import io.ktor.utils.io.pool.DirectByteBufferPool
 import io.ktor.utils.io.pool.useInstance
 import java.io.File
-import java.io.RandomAccessFile
 import java.nio.ByteBuffer
 import kotlin.math.ceil
 import kotlinx.coroutines.CancellationException
@@ -71,6 +70,8 @@ import kotlinx.serialization.json.addJsonArray
 import kotlinx.serialization.json.put
 import moe.tarsin.coroutines.removeAllSuspend
 import moe.tarsin.coroutines.runSuspendCatching
+import okio.buffer
+import okio.sink
 import org.jsoup.Jsoup
 import splitties.init.appCtx
 
@@ -84,11 +85,11 @@ private const val U_CONFIG_TEXT = "Selected Profile"
 fun Either<String, ByteBuffer>.saveParseError(e: Throwable) {
     val dir = AppConfig.externalParseErrorDir ?: return
     val file = File(dir, ReadableTime.getFilenamableTime(System.currentTimeMillis()) + ".txt")
-    RandomAccessFile(file, "rw").use { randomAccessFile ->
-        with(randomAccessFile) {
-            writeUTF(e.message + "\n")
-            onLeft { writeUTF(it) }
-            onRight { channel.write(it) }
+    file.sink().buffer().use { sink ->
+        with(sink) {
+            writeUtf8(e.message + "\n")
+            onLeft { writeUtf8(it) }
+            onRight { write(it) }
         }
     }
 }
@@ -100,7 +101,7 @@ fun rethrowExactly(code: Int, body: Either<String, ByteBuffer>, e: Throwable): N
     // Check sad panda (without panda)
     val empty = body.fold(
         { it.isEmpty() },
-        { it.limit() == 0 },
+        { !it.hasRemaining() },
     )
     if (empty) {
         if (EhUtils.isExHentai) {
@@ -159,6 +160,7 @@ suspend inline fun <T> HttpStatement.fetchUsingAsByteBuffer(crossinline block: s
         runSuspendCatching {
             block(buffer)
         }.onFailure {
+            buffer.rewind()
             rethrowExactly(response.status.value, buffer.right(), it)
         }.getOrThrow()
     }

app/src/main/rust/src/lib.rs

@@ -15,7 +15,7 @@ extern crate sha1;
 extern crate tl;
 
 use android_logger::Config;
-use anyhow::{anyhow, Result};
+use anyhow::{anyhow, ensure, Result};
 use jni::objects::JByteBuffer;
 use jni::sys::{jint, jobject, JavaVM, JNI_VERSION_1_6};
 use jni::JNIEnv;
@@ -114,7 +114,8 @@ where
         let buffer = deref_mut_direct_bytebuffer(env, str)?;
         let value = {
             let html = unsafe { from_utf8_unchecked(&buffer[..limit as usize]) };
-            let dom = tl::parse(html, ParserOptions::default()).map_err(|_| anyhow!("{html}"))?;
+            let dom = tl::parse(html, ParserOptions::default()).map_err(|e| anyhow!(e))?;
+            ensure!(dom.version().is_some(), "{html}");
             f(&dom, html)?
         };
         let mut cursor = Cursor::new(buffer);