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[hal] Properly error check readCANStreamSession (#6108)

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This commit is contained in:
Thad House
2023-12-29 21:57:00 -08:00
committed by GitHub
parent cc631d2a69
commit 636ef58d94
3 changed files with 19 additions and 1 deletions
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11
hal/src/main/native/cpp/jni/CANJNI.cpp
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@@ -135,6 +135,17 @@ Java_edu_wpi_first_hal_can_CANJNI_readCANStreamSession
(JNIEnv* env, jclass, jint sessionHandle, jobjectArray messages,
jint messagesToRead)
{
if (messages == nullptr) {
ThrowNullPointerException(env, "messages cannot be null");
return 0;
}
jsize messagesArrayLen = env->GetArrayLength(messages);
if (messagesArrayLen < messagesToRead) {
messagesToRead = messagesArrayLen;
}
uint32_t handle = static_cast<uint32_t>(sessionHandle);
uint32_t messagesRead = 0;