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Verify existing file checksum to prevent needless downloads

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topjohnwu
2018-08-05 00:35:45 +08:00
parent 525484e834
commit 9f05b182a2
3 changed files with 19 additions and 7 deletions
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app/src/full/java/com/topjohnwu/magisk/asyncs/InstallMagisk.java
+17 -7
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@@ -35,6 +35,7 @@ import org.kamranzafar.jtar.TarOutputStream;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FilterInputStream;
@@ -136,19 +137,28 @@ public class InstallMagisk extends ParallelTask<Void, Void, Boolean> {
}
private void extractFiles(String arch) throws IOException {
console.add("- Downloading zip");
String filename = Utils.fmt("Magisk-v%s(%d).zip",
Data.remoteMagiskVersionString, Data.remoteMagiskVersionCode);
HttpURLConnection conn = WebService.mustRequest(Data.magiskLink, null);
BufferedInputStream buf = new BufferedInputStream(new ProgressStream(conn));
buf.mark(Integer.MAX_VALUE);
File zip = new File(Download.EXTERNAL_PATH, filename);
zip.getParentFile().mkdirs();
try (OutputStream out = new FileOutputStream(zip)) {
ShellUtils.pump(buf, out);
BufferedInputStream buf;
if (!ShellUtils.checkSum("MD5", zip, Data.magiskMD5)) {
console.add("- Downloading zip");
HttpURLConnection conn = WebService.mustRequest(Data.magiskLink, null);
buf = new BufferedInputStream(new ProgressStream(conn), conn.getContentLength());
buf.mark(Integer.MAX_VALUE);
try (OutputStream out = new FileOutputStream(zip)) {
ShellUtils.pump(buf, out);
}
buf.reset();
conn.disconnect();
} else {
console.add("- Existing zip found");
buf = new BufferedInputStream(new FileInputStream(zip), (int) zip.length());
buf.mark(Integer.MAX_VALUE);
}
conn.disconnect();
console.add("- Extracting files");
try (InputStream in = buf) {
ZipUtils.unzip(in, installDir, arch + "/", true);