补充fuzz用例2.0

Signed-off-by: yanghang <yanghang86@huawei.com>

ipc/native/src/core/source/ipc_process_skeleton.cpp

@@ -542,7 +542,7 @@ std::shared_ptr<DBinderSessionObject> IPCProcessSkeleton::ProxyDetachDBinderSess
     std::lock_guard<std::recursive_mutex> lockGuard(proxyToSessionMutex_);
     std::shared_ptr<DBinderSessionObject> tmp = nullptr;
     auto it = proxyToSession_.find(handle);
-    if (it != proxyToSession_.end() && it->second->GetProxy() == proxy) {
+    if (it != proxyToSession_.end() && it->second != nullptr && it->second->GetProxy() == proxy) {
         tmp = it->second;
         proxyToSession_.erase(it);
         ZLOGI(LOG_LABEL, "detach handle:%{public}u from SocketId:%{public}d"
@@ -587,6 +587,10 @@ bool IPCProcessSkeleton::ProxyMoveDBinderSession(uint32_t handle, IPCObjectProxy
     std::lock_guard<std::recursive_mutex> lockGuard(proxyToSessionMutex_);
     auto it = proxyToSession_.find(handle);
     if (it != proxyToSession_.end()) {
+        if (it->second == nullptr) {
+            ZLOGE(LOG_LABEL, "find object is null");
+            return false;
+        }
         ZLOGI(LOG_LABEL, "move proxy of handle:%{public}u old==new:%{public}d", handle,
             it->second->GetProxy() == proxy);
         // moves ownership to this new proxy, so old proxy should not detach this session and stubIndex
@@ -602,6 +606,10 @@ bool IPCProcessSkeleton::QueryProxyBySocketId(int32_t socketId, std::vector<uint
     CHECK_INSTANCE_EXIT_WITH_RETVAL(exitFlag_, false);
     std::lock_guard<std::recursive_mutex> lockGuard(proxyToSessionMutex_);
     for (auto it = proxyToSession_.begin(); it != proxyToSession_.end(); it++) {
+        if (it->second == nullptr) {
+            ZLOGE(LOG_LABEL, "find object is null");
+            return false;
+        }
         if (socketId == it->second->GetSocketId()) {
             proxyHandle.push_back(it->first);
         }
@@ -617,6 +625,10 @@ uint32_t IPCProcessSkeleton::QueryHandleByDatabusSession(const std::string &name
     std::lock_guard<std::recursive_mutex> lockGuard(proxyToSessionMutex_);
 
     for (auto it = proxyToSession_.begin(); it != proxyToSession_.end(); it++) {
+        if (it->second == nullptr) {
+            ZLOGE(LOG_LABEL, "find object is null");
+            return 0;
+        }
         if ((it->second->GetStubIndex() == stubIndex) && (it->second->GetDeviceId().compare(deviceId) == 0) &&
             (it->second->GetServiceName().compare(name) == 0)) {
             ZLOGI(LOG_LABEL, "found handle:%{public}u of session, stubIndex:%{public}" PRIu64, it->first, stubIndex);
@@ -638,6 +650,10 @@ std::shared_ptr<DBinderSessionObject> IPCProcessSkeleton::QuerySessionByInfo(con
     std::lock_guard<std::recursive_mutex> lockGuard(proxyToSessionMutex_);
 
     for (auto it = proxyToSession_.begin(); it != proxyToSession_.end(); it++) {
+        if (it->second == nullptr) {
+            ZLOGE(LOG_LABEL, "find object is null");
+            return nullptr;
+        }
         if ((it->second->GetDeviceId().compare(deviceId) == 0) && (it->second->GetServiceName().compare(name) == 0)) {
             return it->second;
         }
@@ -652,6 +668,10 @@ bool IPCProcessSkeleton::StubDetachDBinderSession(uint32_t handle, uint32_t &tok
     std::unique_lock<std::shared_mutex> lockGuard(databusSessionMutex_);
     auto it = dbinderSessionObjects_.find(handle);
     if (it != dbinderSessionObjects_.end()) {
+        if (it->second == nullptr) {
+            ZLOGE(LOG_LABEL, "find object is null");
+            return false;
+        }
         tokenId = it->second->GetTokenId();
         ZLOGI(LOG_LABEL, "detach handle:%{public}u stubIndex:%{public}" PRIu64 " tokenId:%{public}u",
             handle, it->second->GetStubIndex(), tokenId);

ipc/native/test/fuzztest/core/include/fuzz_data_generator.h

@@ -26,7 +26,9 @@ class DataGenerator {
 public:
     static void Write(const uint8_t *data, size_t size)
     {
-        DataGenerator::parcel_.WriteBuffer(data, size);
+        if (!DataGenerator::parcel_.WriteBuffer(data, size)) {
+            return;
+        }
         DataGenerator::parcel_.RewindRead(0);
     }
 
@@ -45,7 +47,7 @@ private:
 };
 
 template <typename T>
-bool GenerateFromList(T &value, const std::vector<T> &candidateValues)
+static inline bool GenerateFromList(T &value, const std::vector<T> &candidateValues)
 {
     if (candidateValues.empty()) {
         return false;
@@ -58,81 +60,64 @@ bool GenerateFromList(T &value, const std::vector<T> &candidateValues)
     return true;
 }
 
-bool GenerateBool(bool &value)
+static inline bool GenerateBool(bool &value)
 {
     return DataGenerator::GetInstance().ReadBool(value);
 }
 
-bool GenerateInt8(int8_t &value)
+static inline bool GenerateInt8(int8_t &value)
 {
     return DataGenerator::GetInstance().ReadInt8(value);
 }
 
-bool GenerateInt16(int16_t &value)
+static inline bool GenerateInt16(int16_t &value)
 {
     return DataGenerator::GetInstance().ReadInt16(value);
 }
 
-bool GenerateInt32(int32_t &value)
+static inline bool GenerateInt32(int32_t &value)
 {
     return DataGenerator::GetInstance().ReadInt32(value);
 }
 
-bool GenerateInt64(int64_t &value)
+static inline bool GenerateInt64(int64_t &value)
 {
     return DataGenerator::GetInstance().ReadInt64(value);
 }
 
-bool GenerateUint8(uint8_t &value)
+static inline bool GenerateUint8(uint8_t &value)
 {
     return DataGenerator::GetInstance().ReadUint8(value);
 }
 
-bool GenerateUint16(uint16_t &value)
+static inline bool GenerateUint16(uint16_t &value)
 {
     return DataGenerator::GetInstance().ReadUint16(value);
 }
 
-bool GenerateUint32(uint32_t &value)
+static inline bool GenerateUint32(uint32_t &value)
 {
     return DataGenerator::GetInstance().ReadUint32(value);
 }
 
-bool GenerateUint64(uint64_t &value)
+static inline bool GenerateUint64(uint64_t &value)
 {
     return DataGenerator::GetInstance().ReadUint64(value);
 }
 
-bool GenerateFloat(float &value)
+static inline bool GenerateFloat(float &value)
 {
     return DataGenerator::GetInstance().ReadFloat(value);
 }
 
-bool GenerateDouble(double &value)
+static inline bool GenerateDouble(double &value)
 {
     return DataGenerator::GetInstance().ReadDouble(value);
 }
 
-bool GenerateString(std::string &value)
+static inline bool GenerateString(std::string &value)
 {
     return DataGenerator::GetInstance().ReadString(value);
 }
 
-bool GeneratePayload(std::vector<uint8_t> &payload, const std::vector<uint8_t> &prefix = {})
-{
-    uint8_t len = 0;
-    if (!DataGenerator::GetInstance().ReadUint8(len)) {
-        return false;
-    }
-    size_t readableSize = DataGenerator::GetInstance().GetReadableBytes();
-
-    len = (readableSize == 0) ? 0 : (len % readableSize);
-    payload.push_back(len + prefix.size());
-    payload.insert(payload.end(), prefix.begin(), prefix.end());
-    for (uint8_t i = 0; i < len; ++i) {
-        payload.push_back(DataGenerator::GetInstance().ReadUint8());
-    }
-    return true;
-}
-
 #endif // FUZZ_DATA_GENERATOR_H