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Merge "LocIpc could be using data member from a deleted obj"

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qctecmdr Service 2019-01-17 14:19:17 -08:00 committed by Gerrit - the friendly Code Review server
commit 47b591383b
2 changed files with 53 additions and 67 deletions
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117
utils/LocIpc.cpp
View file

@ -69,8 +69,9 @@ bool LocIpc::startListeningNonBlocking(const std::string& name) {
}
bool LocIpc::startListeningBlocking(const std::string& name) {
bool stopRequested = false;
int fd = socket(AF_UNIX, SOCK_DGRAM, 0);
if (fd < 0) {
LOC_LOGe("create socket error. reason:%s", strerror(errno));
return false;
@ -87,89 +88,75 @@ bool LocIpc::startListeningBlocking(const std::string& name) {
if (::bind(fd, (struct sockaddr*)&addr, sizeof(addr)) < 0) {
LOC_LOGe("bind socket error. reason:%s", strerror(errno));
::close(fd);
fd = -1;
return false;
}
} else {
mIpcFd = fd;
mIpcFd = fd;
// inform that the socket is ready to receive message
onListenerReady();
// inform that the socket is ready to receive message
onListenerReady();
ssize_t nBytes = 0;
std::string msg = "";
std::string abort = LOC_MSG_ABORT;
while (1) {
msg.resize(LOC_MSG_BUF_LEN);
nBytes = ::recvfrom(mIpcFd, (void*)(msg.data()), msg.size(), 0, NULL, NULL);
if (nBytes < 0) {
break;
} else if (nBytes == 0) {
continue;
}
if (strncmp(msg.data(), abort.c_str(), abort.length()) == 0) {
LOC_LOGi("recvd abort msg.data %s", msg.data());
break;
}
if (strncmp(msg.data(), LOC_MSG_HEAD, sizeof(LOC_MSG_HEAD) - 1)) {
// short message
msg.resize(nBytes);
onReceive(msg);
} else {
// long message
size_t msgLen = 0;
sscanf(msg.data(), LOC_MSG_HEAD"%zu", &msgLen);
msg.resize(msgLen);
size_t msgLenReceived = 0;
while ((msgLenReceived < msgLen) && (nBytes > 0)) {
nBytes = recvfrom(mIpcFd, (void*)&(msg[msgLenReceived]),
msg.size() - msgLenReceived, 0, NULL, NULL);
msgLenReceived += nBytes;
ssize_t nBytes = 0;
std::string msg = "";
std::string abort = LOC_MSG_ABORT;
while (1) {
msg.resize(LOC_MSG_BUF_LEN);
nBytes = ::recvfrom(fd, (void*)(msg.data()), msg.size(), 0, NULL, NULL);
if (nBytes < 0) {
LOC_LOGe("cannot read socket. reason:%s", strerror(errno));
break;
} else if (0 == nBytes) {
continue;
}
if (nBytes > 0) {
onReceive(msg);
} else {
if (strncmp(msg.data(), abort.c_str(), abort.length()) == 0) {
LOC_LOGi("recvd abort msg.data %s", msg.data());
stopRequested = true;
break;
}
if (strncmp(msg.data(), LOC_MSG_HEAD, sizeof(LOC_MSG_HEAD) - 1)) {
// short message
msg.resize(nBytes);
onReceive(msg);
} else {
// long message
size_t msgLen = 0;
sscanf(msg.data(), LOC_MSG_HEAD"%zu", &msgLen);
msg.resize(msgLen);
size_t msgLenReceived = 0;
while ((msgLenReceived < msgLen) && (nBytes > 0)) {
nBytes = recvfrom(fd, (void*)&(msg[msgLenReceived]),
msg.size() - msgLenReceived, 0, NULL, NULL);
msgLenReceived += nBytes;
}
if (nBytes > 0) {
onReceive(msg);
} else {
LOC_LOGe("cannot read socket. reason:%s", strerror(errno));
break;
}
}
}
}
if (mStopRequested) {
mStopRequested = false;
return true;
} else {
LOC_LOGe("cannot read socket. reason:%s", strerror(errno));
(void)::close(mIpcFd);
mIpcFd = -1;
return false;
if (::close(fd)) {
LOC_LOGe("cannot close socket:%s", strerror(errno));
}
unlink(name.c_str());
return stopRequested;
}
void LocIpc::stopListening() {
const char *socketName = nullptr;
mStopRequested = true;
if (mRunnable) {
if (mIpcFd >= 0) {
std::string abort = LOC_MSG_ABORT;
socketName = (reinterpret_cast<LocIpcRunnable *>(mRunnable))->mIpcName.c_str();
send(socketName, abort);
mRunnable = nullptr;
}
if (mIpcFd >= 0) {
if (::close(mIpcFd)) {
LOC_LOGe("cannot close socket:%s", strerror(errno));
}
mIpcFd = -1;
}
//delete from the file system at the end
if (socketName) {
unlink(socketName);
if (mRunnable) {
mRunnable = nullptr;
}
}

3
utils/LocIpc.h
View file

@ -44,7 +44,7 @@ class LocIpcSender;
class LocIpc {
friend LocIpcSender;
public:
inline LocIpc() : mIpcFd(-1), mStopRequested(false), mRunnable(nullptr) {}
inline LocIpc() : mIpcFd(-1), mRunnable(nullptr) {}
inline virtual ~LocIpc() { stopListening(); }
// Listen for new messages in current thread. Calling this funciton will
@ -93,7 +93,6 @@ private:
const uint8_t data[], uint32_t length);
int mIpcFd;
bool mStopRequested;
LocThread mThread;
LocRunnable *mRunnable;
};