#include <string.h>
#include <SDL/SDL.h>
#ifdef __WIN32__
+# define _WIN32_WINNT 0x0501
# include <windows.h>
-# include <winsock.h>
+# include <winsock2.h>
+# include <ws2tcpip.h>
+# define close(fd) closesocket(fd)
+typedef int socklen_t;
#else
# include <unistd.h>
# include <sys/socket.h>
# include <netinet/in.h>
+# include <netdb.h> // getaddrinfo
#endif
+#define DONT_INCLUDE_SYSCALL_NAMES
#include "../syscalls.h"
-//#include <debug.h>
+#include <logdebug.h> // acess but std
+#include <errno.h>
-#define USE_TCP 0
+#define USE_TCP 1
#define MAX_CLIENTS 16
// === TYPES ===
int ClientID;
SDL_Thread *WorkerThread;
#if USE_TCP
+ int Socket;
#else
tRequestHeader *CurrentRequest;
struct sockaddr_in ClientAddr;
extern tRequestHeader *SyscallRecieve(tRequestHeader *Request, int *ReturnLength);
extern int Threads_CreateRootProcess(void);
extern void Threads_SetThread(int TID);
-// HACK: Should have these in a header
-extern void Log_Debug(const char *Subsys, const char *Message, ...);
-extern void Log_Notice(const char *Subsys, const char *Message, ...);
+extern void *Threads_GetThread(int TID);
+extern void Threads_PostEvent(void *Thread, uint32_t Event);
// === PROTOTYPES ===
tClient *Server_GetClient(int ClientID);
// Allocate a thread for the process
ret->ClientID = ClientID;
+ #if USE_TCP
+ ret->Socket = 0;
+ #else
ret->CurrentRequest = NULL;
+ #endif
if( !ret->WorkerThread ) {
+ #if USE_TCP
+ #else
ret->WaitFlag = SDL_CreateCond();
ret->Mutex = SDL_CreateMutex();
SDL_mutexP( ret->Mutex );
+ #endif
+ Log_Debug("Server", "Creating worker for %p", ret);
ret->WorkerThread = SDL_CreateThread( Server_WorkerThread, ret );
}
int Server_WorkerThread(void *ClientPtr)
{
tClient *Client = ClientPtr;
+
+ Log_Debug("Server", "Worker %p", ClientPtr);
+
+ #if USE_TCP
+ while( *((volatile typeof(Client->Socket)*)&Client->Socket) == 0 )
+ ;
+ Threads_SetThread( Client->ClientID );
+
+ while( Client->ClientID != -1 )
+ {
+ fd_set fds;
+ int nfd = Client->Socket+1;
+ FD_ZERO(&fds);
+ FD_SET(Client->Socket, &fds);
+
+ int rv = select(nfd, &fds, NULL, NULL, NULL); // TODO: Timeouts?
+ if(rv < 0) {
+ perror("select");
+ continue ;
+ }
+// Log_Debug("Server", "%p: rv=%i", Client, rv);
+
+ if( FD_ISSET(Client->Socket, &fds) )
+ {
+ const int ciMaxParamCount = 6;
+ char lbuf[sizeof(tRequestHeader) + ciMaxParamCount*sizeof(tRequestValue)];
+ tRequestHeader *hdr = (void*)lbuf;
+ size_t len = recv(Client->Socket, (void*)hdr, sizeof(*hdr), 0);
+// Log_Debug("Server", "%i bytes of header", len);
+ if( len == 0 ) {
+ Log_Notice("Server", "Zero RX on %i (worker %p)", Client->Socket, Client);
+ break;
+ }
+ if( len == -1 ) {
+ perror("recv header");
+// Log_Warning("Server", "recv() error - %s", strerror(errno));
+ break;
+ }
+ if( len != sizeof(*hdr) ) {
+ // Oops?
+ Log_Warning("Server", "FD%i bad sized (%i != exp %i)",
+ Client->Socket, len, sizeof(*hdr));
+ continue ;
+ }
+
+ if( hdr->NParams > ciMaxParamCount ) {
+ // Oops.
+ Log_Warning("Server", "FD%i too many params (%i > max %i)",
+ Client->Socket, hdr->NParams, ciMaxParamCount);
+ break ;
+ }
+
+ if( hdr->NParams > 0 )
+ {
+ len = recv(Client->Socket, (void*)hdr->Params, hdr->NParams*sizeof(tRequestValue), 0);
+// Log_Debug("Server", "%i bytes of params", len);
+ if( len != hdr->NParams*sizeof(tRequestValue) ) {
+ // Oops.
+ perror("recv params");
+ Log_Warning("Sever", "Recieving params failed");
+ break ;
+ }
+ }
+ else
+ {
+// Log_Debug("Server", "No params?");
+ }
+
+ // Get buffer size
+ size_t hdrsize = sizeof(tRequestHeader) + hdr->NParams*sizeof(tRequestValue);
+ size_t bufsize = hdrsize;
+ int i;
+ for( i = 0; i < hdr->NParams; i ++ )
+ {
+ if( hdr->Params[i].Flags & ARG_FLAG_ZEROED )
+ ;
+ else {
+ bufsize += hdr->Params[i].Length;
+ }
+ }
+
+ // Allocate full buffer
+ hdr = malloc(bufsize);
+ memcpy(hdr, lbuf, hdrsize);
+ if( bufsize > hdrsize )
+ {
+ size_t rem = bufsize - hdrsize;
+ char *ptr = (void*)( hdr->Params + hdr->NParams );
+ while( rem )
+ {
+ len = recv(Client->Socket, ptr, rem, 0);
+// Log_Debug("Server", "%i bytes of data", len);
+ if( len == -1 ) {
+ // Oops?
+ perror("recv data");
+ Log_Warning("Sever", "Recieving data failed");
+ break ;
+ }
+ rem -= len;
+ ptr += len;
+ }
+ if( rem ) {
+ break;
+ }
+ }
+// else
+// Log_Debug("Server", "no data");
+
+ int retlen;
+ tRequestHeader *retHeader;
+ retHeader = SyscallRecieve(hdr, &retlen);
+ if( !retHeader ) {
+ // Some sort of error
+ Log_Warning("Server", "SyscallRecieve failed?");
+ continue ;
+ }
+
+ send(Client->Socket, (void*)retHeader, retlen, 0);
+
+ // Clean up
+ free(hdr);
+ }
+ }
+ #else
tRequestHeader *retHeader;
tRequestHeader errorHeader;
int retSize = 0;
int sentSize;
int cur_client_id = 0;
-
- #if USE_TCP
- #else
- for( ;; )
+ while( Client->ClientID != -1 )
{
// Wait for something to do
- while( Client->CurrentRequest == NULL )
+ if( Client->CurrentRequest == NULL )
SDL_CondWait(Client->WaitFlag, Client->Mutex);
+ if( Client->CurrentRequest == NULL )
+ continue ;
// Log_Debug("AcessSrv", "Worker got message %p", Client->CurrentRequest);
free( retHeader );
}
#endif
+ Log_Notice("Server", "Terminated Worker %p", ClientPtr);
+ return 0;
}
int SyscallServer(void)
return 0;
}
+int Server_Shutdown(void)
+{
+ close(gSocket);
+ for( int i = 0; i < MAX_CLIENTS; i ++ )
+ {
+ if( gaServer_Clients[i].ClientID == 0 )
+ continue ;
+ Threads_PostEvent( Threads_GetThread(gaServer_Clients[i].ClientID), 0 );
+ gaServer_Clients[i].ClientID = -1;
+ #if USE_TCP
+ close(gaServer_Clients[i].Socket);
+ #else
+ SDL_CondSignal(gaServer_Clients[i].WaitFlag);
+ #endif
+ }
+ return 0;
+}
+
int Server_ListenThread(void *Unused)
{
// Wait for something to do :)
for( ;; )
{
#if USE_TCP
- struct sockaddr_in client;
- uint clientSize = sizeof(client);
- int clientSock = accept(gSocket, (struct sockaddr*)&client, &clientSize);
+ struct sockaddr_in clientaddr;
+ socklen_t clientSize = sizeof(clientaddr);
+ int clientSock = accept(gSocket, (struct sockaddr*)&clientaddr, &clientSize);
if( clientSock < 0 ) {
perror("SyscallServer - accept");
break ;
}
+
+ char addrstr[4*8+8+1];
+ getnameinfo((struct sockaddr*)&clientaddr, sizeof(clientaddr),
+ addrstr, sizeof(addrstr), NULL, 0, NI_NUMERICHOST);
+ Log_Debug("Server", "Client connection %s:%i", addrstr, ntohs(clientaddr.sin_port));
- Log("Client connection %x:%i\n",
- ntohl(client.sin_addr), ntohs(client.sin_port)
- );
+ // Perform auth
+ size_t len;
+ tRequestAuthHdr authhdr;
+ len = recv(clientSock, (void*)&authhdr, sizeof(authhdr), 0);
+ if( len != sizeof(authhdr) ) {
+ // Some form of error?
+ Log_Warning("Server", "Client auth block bad size (%i != exp %i)",
+ len, sizeof(authhdr));
+ close(clientSock);
+ continue ;
+ }
+
+ Log_Debug("Server", "Client assumed PID %i", authhdr.pid);
+
+ tClient *client;
+ if( authhdr.pid == 0 ) {
+ // Allocate PID and client structure/thread
+ client = Server_GetClient(0);
+ client->Socket = clientSock;
+ authhdr.pid = client->ClientID;
+ }
+ else {
+ // Get client structure and make sure it's unused
+ // - Auth token / verifcation?
+ client = Server_GetClient(authhdr.pid);
+ if( !client ) {
+ Log_Warning("Server", "Can't allocate a client struct for %s:%i",
+ addrstr, clientaddr.sin_port);
+ close(clientSock);
+ continue ;
+ }
+ if( client->Socket != 0 ) {
+ Log_Warning("Server", "Client (%i)%p owned by FD%i but %s:%i tried to use it",
+ authhdr.pid, client, addrstr, clientaddr.sin_port);
+ close(clientSock);
+ continue;
+ }
+ else {
+ client->Socket = clientSock;
+ }
+ }
+ Log_Debug("Server", "Client given PID %i - info %p", authhdr.pid, client);
+ len = send(clientSock, (void*)&authhdr, sizeof(authhdr), 0);
+ if( len != sizeof(authhdr) ) {
+ // Ok, this is an error
+ perror("Sending auth reply");
+ }
+
+ // All done, client thread should be watching now
+
#else
char data[BUFSIZ];
tRequestHeader *req = (void*)data;