/* Removes a planet from linkedlist and deallocates its memory
a message will be sent to the client that created the planet with the reason of termination. */
int killPlanet(planet_type *planet, int flag)
{
char clientMailslotName[256], mailSlotString[18] = "\\\\.\\mailslot\\", procIDString[30];
HANDLE clientMailslot;
serverMessage message;
if (planetExists(planet))
{
wsprintf(clientMailslotName, "\\\\.\\mailslot\\%s", planet->pid); //Generate clientMailSlotName
clientMailslot = mailslotConnect(clientMailslotName);
if (clientMailslot == INVALID_HANDLE_VALUE)
{
MessageBox(0, "Failed to get a handle to the client mailslot!!!", "", 1);
return;
}
strcpy_s(message.name, sizeof(planet->name), planet->name);
if (removeNode(planet))
{
// Send Message to client: Planet removed
message.error = flag;
mailslotWrite(clientMailslot, (void *)&message, sizeof(serverMessage));
return 1;
}
//LeaveCriticalSection(&dbAccess);
}
else
return 0;
}
void sendErrorToCreator(planet_type *planet, int flag)
{
char clientMailslotName[256], mailSlotString[18] = "\\\\.\\mailslot\\", procIDString[30];
HANDLE clientMailslot;
serverMessage message;
wsprintf(clientMailslotName, "\\\\.\\mailslot\\%s", planet->pid); //Generate clientMailSlotName
clientMailslot = mailslotConnect(clientMailslotName);
if (clientMailslot == INVALID_HANDLE_VALUE)
{
MessageBox(0, "Failed to get a handle to the client mailslot!!!", "", 1);
return;
}
strcpy_s(message.name, sizeof(planet->name), planet->name);
// Send Message to client: Planet removed
message.error = flag;
mailslotWrite(clientMailslot, (void *)&message, sizeof(serverMessage));
}
void deletePlanet(planet_type *planetToRemove, char *deleteMessage)
{
planet_type *prev = database;
char mailslotName[128];
sprintf(mailslotName, "\\\\.\\mailslot\\%s", planetToRemove->pid);
EnterCriticalSection(&criticalSection);
planet_type *traverser = database;
while (traverser != planetToRemove)
{
prev = traverser;
traverser = traverser->next;
}
prev->next = planetToRemove->next;
//If the planet to remove is the root-planet
if (traverser == database)
database = traverser->next;
traverser->next = NULL;
free(traverser);
LeaveCriticalSection(&criticalSection);
HANDLE mail = mailslotConnect(mailslotName);
mailslotWrite(mail, deleteMessage, 4);
mailslotClose(mail);
}
