Mirror von
https://github.com/IntellectualSites/FastAsyncWorldEdit.git
synchronisiert 2024-09-06 16:12:51 +02:00
Harden JsonFileSessionStore against nulls/Gson oddities
Dieser Commit ist enthalten in:
Ursprung
982caaffab
Commit
fa25ad22cd
@ -88,7 +88,15 @@ public class JsonFileSessionStore implements SessionStore {
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try (Closer closer = Closer.create()) {
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FileReader fr = closer.register(new FileReader(file));
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BufferedReader br = closer.register(new BufferedReader(fr));
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return gson.fromJson(br, LocalSession.class);
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LocalSession session = gson.fromJson(br, LocalSession.class);
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if (session == null) {
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log.warn("Loaded a null session from {}, creating new session", file);
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if (!file.delete()) {
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log.warn("Failed to delete corrupted session {}", file);
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}
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session = new LocalSession();
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}
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return session;
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} catch (JsonParseException e) {
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throw new IOException(e);
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} catch (FileNotFoundException e) {
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@ -98,6 +106,7 @@ public class JsonFileSessionStore implements SessionStore {
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@Override
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public void save(UUID id, LocalSession session) throws IOException {
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checkNotNull(session);
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File finalFile = getPath(id);
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File tempFile = new File(finalFile.getParentFile(), finalFile.getName() + ".tmp");
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@ -115,6 +124,10 @@ public class JsonFileSessionStore implements SessionStore {
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}
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}
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if (tempFile.length() == 0) {
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throw new IllegalStateException("Gson wrote zero bytes");
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}
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if (!tempFile.renameTo(finalFile)) {
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log.warn("Failed to rename temporary session file to " + finalFile.getPath());
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}
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