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Include bootstrap zips as shared libraries

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This commit is contained in:
Fredrik Fornwall
2019-10-13 23:13:06 +02:00
parent 5ba3f7cf6d
commit c76cec186a
6 changed files with 131 additions and 31 deletions
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38
app/src/main/java/com/termux/app/TermuxInstaller.java
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@@ -16,6 +16,7 @@ import com.termux.R;
import com.termux.terminal.EmulatorDebug;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
@@ -38,7 +39,7 @@ import java.util.zip.ZipInputStream;
* <p/>
* (3) A staging folder, $STAGING_PREFIX, is {@link #deleteFolder(File)} if left over from broken installation below.
* <p/>
* (4) The architecture is determined and an appropriate bootstrap zip url is determined in {@link #determineZipUrl()}.
* (4) The zip file is loaded from a shared library.
* <p/>
* (5) The zip, containing entries relative to the $PREFIX, is is downloaded and extracted by a zip input stream
* continuously encountering zip file entries:
@@ -82,8 +83,8 @@ final class TermuxInstaller {
final byte[] buffer = new byte[8096];
final List<Pair<String, String>> symlinks = new ArrayList<>(50);
final URL zipUrl = determineZipUrl();
try (ZipInputStream zipInput = new ZipInputStream(zipUrl.openStream())) {
final byte[] zipBytes = loadZipBytes();
try (ZipInputStream zipInput = new ZipInputStream(new ByteArrayInputStream(zipBytes))) {
ZipEntry zipEntry;
while ((zipEntry = zipInput.getNextEntry()) != null) {
if (zipEntry.getName().equals("SYMLINKS.txt")) {
@@ -167,34 +168,13 @@ final class TermuxInstaller {
}
}
/** Get bootstrap zip url for this systems cpu architecture. */
private static URL determineZipUrl() throws MalformedURLException {
String archName = determineTermuxArchName();
String url = Build.VERSION.SDK_INT >= Build.VERSION_CODES.N
? "https://termux.org/bootstrap-" + archName + ".zip"
: "https://termux.net/bootstrap/bootstrap-" + archName + ".zip";
return new URL(url);
public static byte[] loadZipBytes() {
// Only load the shared library when necessary to save memory usage.
System.loadLibrary("termux-bootstrap");
return getZip();
}
private static String determineTermuxArchName() {
// Note that we cannot use System.getProperty("os.arch") since that may give e.g. "aarch64"
// while a 64-bit runtime may not be installed (like on the Samsung Galaxy S5 Neo).
// Instead we search through the supported abi:s on the device, see:
// http://developer.android.com/ndk/guides/abis.html
// Note that we search for abi:s in preferred order (the ordering of the
// Build.SUPPORTED_ABIS list) to avoid e.g. installing arm on an x86 system where arm
// emulation is available.
for (String androidArch : Build.SUPPORTED_ABIS) {
switch (androidArch) {
case "arm64-v8a": return "aarch64";
case "armeabi-v7a": return "arm";
case "x86_64": return "x86_64";
case "x86": return "i686";
}
}
throw new RuntimeException("Unable to determine arch from Build.SUPPORTED_ABIS = " +
Arrays.toString(Build.SUPPORTED_ABIS));
}
public static native byte[] getZip();
/** Delete a folder and all its content or throw. Don't follow symlinks. */
static void deleteFolder(File fileOrDirectory) throws IOException {