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Changed/Fixed: Ensure bootstrap installation creates prefix and prefix staging directory before extraction

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We manually create the parent directories first so that bootstrap failures are detected early on instead of some sub directory during extraction.

Also fixed issue where `TermuxFileUtils.isTermuxFilesDirectoryAccessible()` would not check if a directory file actually existed at TERMUX_FILES_DIR_PATH and may set permissions for a non-directory file at the path. The `TermuxInstaller` was testing if `TERMUX_PREFIX_DIR_PATH` existed later on so check wasn't necessary but function may be called from elsewhere too.

Also removed legacy `PREFIX_FILE*` and `STAGING_PREFIX_FILE*` local constants and use the ones provided by `TermuxConstants` directly.
This commit is contained in:
agnostic-apollo
2021-09-04 08:06:25 +05:00
parent 3373a1f41c
commit 4e5f2c7e01
2 changed files with 89 additions and 30 deletions
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67
app/src/main/java/com/termux/app/TermuxInstaller.java
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@@ -31,6 +31,11 @@ import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import static com.termux.shared.termux.TermuxConstants.TERMUX_PREFIX_DIR;
import static com.termux.shared.termux.TermuxConstants.TERMUX_PREFIX_DIR_PATH;
import static com.termux.shared.termux.TermuxConstants.TERMUX_STAGING_PREFIX_DIR;
import static com.termux.shared.termux.TermuxConstants.TERMUX_STAGING_PREFIX_DIR_PATH;
/**
* Install the Termux bootstrap packages if necessary by following the below steps:
* <p/>
@@ -67,7 +72,7 @@ final class TermuxInstaller {
// Termux can only be run as the primary user (device owner) since only that
// account has the expected file system paths. Verify that:
if (!PackageUtils.isCurrentUserThePrimaryUser(activity)) {
bootstrapErrorMessage = activity.getString(R.string.bootstrap_error_not_primary_user_message, MarkdownUtils.getMarkdownCodeForString(TermuxConstants.TERMUX_PREFIX_DIR_PATH, false));
bootstrapErrorMessage = activity.getString(R.string.bootstrap_error_not_primary_user_message, MarkdownUtils.getMarkdownCodeForString(TERMUX_PREFIX_DIR_PATH, false));
Logger.logError(LOG_TAG, "isFilesDirectoryAccessible: " + isFilesDirectoryAccessible);
Logger.logError(LOG_TAG, bootstrapErrorMessage);
sendBootstrapCrashReportNotification(activity, bootstrapErrorMessage);
@@ -87,21 +92,18 @@ final class TermuxInstaller {
return;
}
final String PREFIX_FILE_PATH = TermuxConstants.TERMUX_PREFIX_DIR_PATH;
final File PREFIX_FILE = TermuxConstants.TERMUX_PREFIX_DIR;
// If prefix directory exists, even if its a symlink to a valid directory and symlink is not broken/dangling
if (FileUtils.directoryFileExists(PREFIX_FILE_PATH, true)) {
File[] PREFIX_FILE_LIST = PREFIX_FILE.listFiles();
if (FileUtils.directoryFileExists(TERMUX_PREFIX_DIR_PATH, true)) {
File[] PREFIX_FILE_LIST = TERMUX_PREFIX_DIR.listFiles();
// If prefix directory is empty or only contains the tmp directory
if(PREFIX_FILE_LIST == null || PREFIX_FILE_LIST.length == 0 || (PREFIX_FILE_LIST.length == 1 && TermuxConstants.TERMUX_TMP_PREFIX_DIR_PATH.equals(PREFIX_FILE_LIST[0].getAbsolutePath()))) {
Logger.logInfo(LOG_TAG, "The prefix directory \"" + PREFIX_FILE_PATH + "\" exists but is empty or only contains the tmp directory.");
Logger.logInfo(LOG_TAG, "The termux prefix directory \"" + TERMUX_PREFIX_DIR_PATH + "\" exists but is empty or only contains the tmp directory.");
} else {
whenDone.run();
return;
}
} else if (FileUtils.fileExists(PREFIX_FILE_PATH, false)) {
Logger.logInfo(LOG_TAG, "The prefix directory \"" + PREFIX_FILE_PATH + "\" does not exist but another file exists at its destination.");
} else if (FileUtils.fileExists(TERMUX_PREFIX_DIR_PATH, false)) {
Logger.logInfo(LOG_TAG, "The termux prefix directory \"" + TERMUX_PREFIX_DIR_PATH + "\" does not exist but another file exists at its destination.");
}
final ProgressDialog progress = ProgressDialog.show(activity, null, activity.getString(R.string.bootstrap_installer_body), true, false);
@@ -113,24 +115,35 @@ final class TermuxInstaller {
Error error;
final String STAGING_PREFIX_PATH = TermuxConstants.TERMUX_STAGING_PREFIX_DIR_PATH;
final File STAGING_PREFIX_FILE = new File(STAGING_PREFIX_PATH);
// Delete prefix staging directory or any file at its destination
error = FileUtils.deleteFile("prefix staging directory", STAGING_PREFIX_PATH, true);
error = FileUtils.deleteFile("termux prefix staging directory", TERMUX_STAGING_PREFIX_DIR_PATH, true);
if (error != null) {
showBootstrapErrorDialog(activity, PREFIX_FILE_PATH, whenDone, Error.getErrorMarkdownString(error));
showBootstrapErrorDialog(activity, whenDone, Error.getErrorMarkdownString(error));
return;
}
// Delete prefix directory or any file at its destination
error = FileUtils.deleteFile("prefix directory", PREFIX_FILE_PATH, true);
error = FileUtils.deleteFile("termux prefix directory", TERMUX_PREFIX_DIR_PATH, true);
if (error != null) {
showBootstrapErrorDialog(activity, PREFIX_FILE_PATH, whenDone, Error.getErrorMarkdownString(error));
showBootstrapErrorDialog(activity, whenDone, Error.getErrorMarkdownString(error));
return;
}
Logger.logInfo(LOG_TAG, "Extracting bootstrap zip to prefix staging directory \"" + STAGING_PREFIX_PATH + "\".");
// Create prefix staging directory if it does not already exist and set required permissions
error = TermuxFileUtils.isTermuxPrefixStagingDirectoryAccessible(true, true);
if (error != null) {
showBootstrapErrorDialog(activity, whenDone, Error.getErrorMarkdownString(error));
return;
}
// Create prefix directory if it does not already exist and set required permissions
error = TermuxFileUtils.isTermuxPrefixDirectoryAccessible(true, true);
if (error != null) {
showBootstrapErrorDialog(activity, whenDone, Error.getErrorMarkdownString(error));
return;
}
Logger.logInfo(LOG_TAG, "Extracting bootstrap zip to prefix staging directory \"" + TERMUX_STAGING_PREFIX_DIR_PATH + "\".");
final byte[] buffer = new byte[8096];
final List<Pair<String, String>> symlinks = new ArrayList<>(50);
@@ -147,23 +160,23 @@ final class TermuxInstaller {
if (parts.length != 2)
throw new RuntimeException("Malformed symlink line: " + line);
String oldPath = parts[0];
String newPath = STAGING_PREFIX_PATH + "/" + parts[1];
String newPath = TERMUX_STAGING_PREFIX_DIR_PATH + "/" + parts[1];
symlinks.add(Pair.create(oldPath, newPath));
error = ensureDirectoryExists(new File(newPath).getParentFile());
if (error != null) {
showBootstrapErrorDialog(activity, PREFIX_FILE_PATH, whenDone, Error.getErrorMarkdownString(error));
showBootstrapErrorDialog(activity, whenDone, Error.getErrorMarkdownString(error));
return;
}
}
} else {
String zipEntryName = zipEntry.getName();
File targetFile = new File(STAGING_PREFIX_PATH, zipEntryName);
File targetFile = new File(TERMUX_STAGING_PREFIX_DIR_PATH, zipEntryName);
boolean isDirectory = zipEntry.isDirectory();
error = ensureDirectoryExists(isDirectory ? targetFile : targetFile.getParentFile());
if (error != null) {
showBootstrapErrorDialog(activity, PREFIX_FILE_PATH, whenDone, Error.getErrorMarkdownString(error));
showBootstrapErrorDialog(activity, whenDone, Error.getErrorMarkdownString(error));
return;
}
@@ -189,17 +202,17 @@ final class TermuxInstaller {
Os.symlink(symlink.first, symlink.second);
}
Logger.logInfo(LOG_TAG, "Moving prefix staging to prefix directory.");
Logger.logInfo(LOG_TAG, "Moving termux prefix staging to prefix directory.");
if (!STAGING_PREFIX_FILE.renameTo(PREFIX_FILE)) {
throw new RuntimeException("Moving prefix staging to prefix directory failed");
if (!TERMUX_STAGING_PREFIX_DIR.renameTo(TERMUX_PREFIX_DIR)) {
throw new RuntimeException("Moving termux prefix staging to prefix directory failed");
}
Logger.logInfo(LOG_TAG, "Bootstrap packages installed successfully.");
activity.runOnUiThread(whenDone);
} catch (final Exception e) {
showBootstrapErrorDialog(activity, PREFIX_FILE_PATH, whenDone, Logger.getStackTracesMarkdownString(null, Logger.getStackTracesStringArray(e)));
showBootstrapErrorDialog(activity, whenDone, Logger.getStackTracesMarkdownString(null, Logger.getStackTracesStringArray(e)));
} finally {
activity.runOnUiThread(() -> {
@@ -214,7 +227,7 @@ final class TermuxInstaller {
}.start();
}
public static void showBootstrapErrorDialog(Activity activity, String PREFIX_FILE_PATH, Runnable whenDone, String message) {
public static void showBootstrapErrorDialog(Activity activity, Runnable whenDone, String message) {
Logger.logErrorExtended(LOG_TAG, "Bootstrap Error:\n" + message);
// Send a notification with the exception so that the user knows why bootstrap setup failed
@@ -229,7 +242,7 @@ final class TermuxInstaller {
})
.setPositiveButton(R.string.bootstrap_error_try_again, (dialog, which) -> {
dialog.dismiss();
FileUtils.deleteFile("prefix directory", PREFIX_FILE_PATH, true);
FileUtils.deleteFile("termux prefix directory", TERMUX_PREFIX_DIR_PATH, true);
TermuxInstaller.setupBootstrapIfNeeded(activity, whenDone);
}).show();
} catch (WindowManager.BadTokenException e1) {