Hesham/wireguard-android
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ToolsInstaller: Add methods to check/make symlinks

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Signed-off-by: Samuel Holland <samuel@sholland.org>
This commit is contained in:
Samuel Holland 2018-01-08 23:12:50 -06:00
parent 011d683c23
commit 1cfb938dd1
1 changed files with 35 additions and 0 deletions
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35
app/src/main/java/com/wireguard/android/util/ToolsInstaller.java
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@ -31,11 +31,13 @@ public final class ToolsInstaller {
};
private static final File INSTALL_DIR = getInstallDir();
private final File localBinaryDir;
private final File nativeLibraryDir;
private final RootShell rootShell;
@Inject
public ToolsInstaller(@ApplicationContext final Context context, final RootShell rootShell) {
localBinaryDir = new File(context.getCacheDir(), "bin");
nativeLibraryDir = new File(context.getApplicationInfo().nativeLibraryDir);
this.rootShell = rootShell;
}
@ -68,6 +70,21 @@ public final class ToolsInstaller {
}
}
public boolean areSymlinked() {
final StringBuilder script = new StringBuilder();
for (final String[] names : EXECUTABLES) {
script.append(String.format("test '%s' -ef '%s' && ",
new File(nativeLibraryDir, names[0]),
new File(localBinaryDir, names[1])));
}
script.append("exit ").append(OsConstants.EALREADY);
try {
return rootShell.run(null, script.toString()) == OsConstants.EALREADY;
} catch (final ErrnoException | IOException | NoRootException ignored) {
return false;
}
}
public int install() {
if (INSTALL_DIR == null)
return OsConstants.ENOENT;
@ -88,4 +105,22 @@ public final class ToolsInstaller {
return OsConstants.EACCES;
}
}
public int symlink() {
final StringBuilder script = new StringBuilder("set -ex");
for (final String[] names : EXECUTABLES) {
script.append(String.format("; ln -fns '%s' '%s'",
new File(nativeLibraryDir, names[0]),
new File(localBinaryDir, names[1])));
}
try {
return rootShell.run(null, script.toString());
} catch (final ErrnoException e) {
return e.errno;
} catch (final IOException ignored) {
return OsConstants.EXIT_FAILURE;
} catch (final NoRootException ignored) {
return OsConstants.EACCES;
}
}
}