diff options
3 files changed, 21 insertions, 1 deletions
diff --git a/native/jni/src/suggest/policyimpl/dictionary/dynamic_patricia_trie_node_reader.cpp b/native/jni/src/suggest/policyimpl/dictionary/dynamic_patricia_trie_node_reader.cpp index 456352c17..2fa3111d3 100644 --- a/native/jni/src/suggest/policyimpl/dictionary/dynamic_patricia_trie_node_reader.cpp +++ b/native/jni/src/suggest/policyimpl/dictionary/dynamic_patricia_trie_node_reader.cpp @@ -26,7 +26,8 @@ namespace latinime { void DynamicPatriciaTrieNodeReader::fetchPtNodeInfoFromBufferAndProcessMovedPtNode( const int ptNodePos, const int maxCodePointCount, int *const outCodePoints) { if (ptNodePos < 0 || ptNodePos >= mBuffer->getTailPosition()) { - AKLOGE("Fetching PtNode info form invalid dictionary position: %d, dictionary size: %d", + // Reading invalid position because of bug or broken dictionary. + AKLOGE("Fetching PtNode info from invalid dictionary position: %d, dictionary size: %d", ptNodePos, mBuffer->getTailPosition()); ASSERT(false); invalidatePtNodeInfo(); diff --git a/native/jni/src/suggest/policyimpl/dictionary/dynamic_patricia_trie_reading_helper.cpp b/native/jni/src/suggest/policyimpl/dictionary/dynamic_patricia_trie_reading_helper.cpp index f4a2ef389..601ee663b 100644 --- a/native/jni/src/suggest/policyimpl/dictionary/dynamic_patricia_trie_reading_helper.cpp +++ b/native/jni/src/suggest/policyimpl/dictionary/dynamic_patricia_trie_reading_helper.cpp @@ -155,6 +155,15 @@ bool DynamicPatriciaTrieReadingHelper::traverseAllPtNodesInPtNodeArrayLevelPreor // Read node array size and process empty node arrays. Nodes and arrays are counted up in this // method to avoid an infinite loop. void DynamicPatriciaTrieReadingHelper::nextPtNodeArray() { + if (mReadingState.mPos < 0 || mReadingState.mPos >= mBuffer->getTailPosition()) { + // Reading invalid position because of a bug or a broken dictionary. + AKLOGE("Reading PtNode array info from invalid dictionary position: %d, dict size: %d", + mReadingState.mPos, mBuffer->getTailPosition()); + ASSERT(false); + mIsError = true; + mReadingState.mPos = NOT_A_DICT_POS; + return; + } mReadingState.mPosOfLastPtNodeArrayHead = mReadingState.mPos; const bool usesAdditionalBuffer = mBuffer->isInAdditionalBuffer(mReadingState.mPos); const uint8_t *const dictBuf = mBuffer->getBuffer(usesAdditionalBuffer); @@ -191,6 +200,15 @@ void DynamicPatriciaTrieReadingHelper::nextPtNodeArray() { // Follow the forward link and read the next node array if exists. void DynamicPatriciaTrieReadingHelper::followForwardLink() { + if (mReadingState.mPos < 0 || mReadingState.mPos >= mBuffer->getTailPosition()) { + // Reading invalid position because of bug or broken dictionary. + AKLOGE("Reading forward link from invalid dictionary position: %d, dict size: %d", + mReadingState.mPos, mBuffer->getTailPosition()); + ASSERT(false); + mIsError = true; + mReadingState.mPos = NOT_A_DICT_POS; + return; + } const bool usesAdditionalBuffer = mBuffer->isInAdditionalBuffer(mReadingState.mPos); const uint8_t *const dictBuf = mBuffer->getBuffer(usesAdditionalBuffer); if (usesAdditionalBuffer) { diff --git a/native/jni/src/suggest/policyimpl/dictionary/dynamic_patricia_trie_reading_helper.h b/native/jni/src/suggest/policyimpl/dictionary/dynamic_patricia_trie_reading_helper.h index b033eee05..154590fbd 100644 --- a/native/jni/src/suggest/policyimpl/dictionary/dynamic_patricia_trie_reading_helper.h +++ b/native/jni/src/suggest/policyimpl/dictionary/dynamic_patricia_trie_reading_helper.h @@ -240,6 +240,7 @@ class DynamicPatriciaTrieReadingHelper { static const int MAX_NODE_ARRAY_COUNT_TO_AVOID_INFINITE_LOOP; static const size_t MAX_READING_STATE_STACK_SIZE; + // TODO: Introduce error code to track what caused the error. bool mIsError; ReadingState mReadingState; const BufferWithExtendableBuffer *const mBuffer; |