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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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1
app/src/full/java/com/topjohnwu/magisk/Data.java
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@ -33,6 +33,7 @@ public class Data {
public static int remoteMagiskVersionCode = -1; public static int remoteMagiskVersionCode = -1;
public static String magiskLink; public static String magiskLink;
public static String magiskNoteLink; public static String magiskNoteLink;
public static String magiskMD5;
public static String remoteManagerVersionString; public static String remoteManagerVersionString;
public static int remoteManagerVersionCode = -1; public static int remoteManagerVersionCode = -1;
public static String managerLink; public static String managerLink;

1
app/src/full/java/com/topjohnwu/magisk/asyncs/CheckUpdates.java
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@ -68,6 +68,7 @@ public class CheckUpdates {
Data.remoteMagiskVersionCode = getInt(magisk, "versionCode", -1); Data.remoteMagiskVersionCode = getInt(magisk, "versionCode", -1);
Data.magiskLink = getString(magisk, "link", null); Data.magiskLink = getString(magisk, "link", null);
Data.magiskNoteLink = getString(magisk, "note", null); Data.magiskNoteLink = getString(magisk, "note", null);
Data.magiskMD5 = getString(magisk, "md5", null);
JSONObject manager = getJson(json, "app"); JSONObject manager = getJson(json, "app");
Data.remoteManagerVersionString = getString(manager, "version", null); Data.remoteManagerVersionString = getString(manager, "version", null);

24
app/src/full/java/com/topjohnwu/magisk/asyncs/InstallMagisk.java
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@ -35,6 +35,7 @@ import org.kamranzafar.jtar.TarOutputStream;
import java.io.BufferedInputStream; import java.io.BufferedInputStream;
import java.io.BufferedOutputStream; import java.io.BufferedOutputStream;
import java.io.File; import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException; import java.io.FileNotFoundException;
import java.io.FileOutputStream; import java.io.FileOutputStream;
import java.io.FilterInputStream; import java.io.FilterInputStream;
@ -136,19 +137,28 @@ public class InstallMagisk extends ParallelTask<Void, Void, Boolean> {
} }
private void extractFiles(String arch) throws IOException { private void extractFiles(String arch) throws IOException {
console.add("- Downloading zip");
String filename = Utils.fmt("Magisk-v%s(%d).zip", String filename = Utils.fmt("Magisk-v%s(%d).zip",
Data.remoteMagiskVersionString, Data.remoteMagiskVersionCode); 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); File zip = new File(Download.EXTERNAL_PATH, filename);
zip.getParentFile().mkdirs(); zip.getParentFile().mkdirs();
try (OutputStream out = new FileOutputStream(zip)) { BufferedInputStream buf;
ShellUtils.pump(buf, out);
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(); 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"); console.add("- Extracting files");
try (InputStream in = buf) { try (InputStream in = buf) {
ZipUtils.unzip(in, installDir, arch + "/", true); ZipUtils.unzip(in, installDir, arch + "/", true);