AcessNative/ld-acess_src/request.c

   1 /*
   2  */
   3 #define DEBUG   0
   4
   5
   6 #if DEBUG
   7 # define DEBUG_S        printf
   8 #else
   9 # define DEBUG_S(...)
  10 # define DONT_INCLUDE_SYSCALL_NAMES
  11 #endif
  12
  13 #include <stdlib.h>
  14 #include <string.h>
  15 #include <stdio.h>
  16 #ifdef __WIN32__
  17 # include <windows.h>
  18 # include <winsock.h>
  19 #else
  20 # include <unistd.h>
  21 # include <sys/socket.h>
  22 # include <netinet/in.h>
  23 #endif
  24 #include "request.h"
  25 #include "../syscalls.h"
  26
  27 #define USE_TCP 0
  28
  29 // === PROTOTYPES ===
  30 void    SendData(void *Data, int Length);
  31  int    ReadData(void *Dest, int MaxLen, int Timeout);
  32
  33 // === GLOBALS ===
  34 #ifdef __WIN32__
  35 WSADATA gWinsock;
  36 SOCKET  gSocket = INVALID_SOCKET;
  37 #else
  38 # define INVALID_SOCKET -1
  39  int    gSocket = INVALID_SOCKET;
  40 #endif
  41 // Client ID to pass to server
  42 // TODO: Implement such that each thread gets a different one
  43  int    giSyscall_ClientID = 0;
  44 struct sockaddr_in      gSyscall_ServerAddr;
  45
  46 // === CODE ===
  47 int _InitSyscalls()
  48 {
  49
  50         #ifdef __WIN32__
  51         /* Open windows connection */
  52         if (WSAStartup(0x0101, &gWinsock) != 0)
  53         {
  54                 fprintf(stderr, "Could not open Windows connection.\n");
  55                 exit(0);
  56         }
  57         #endif
  58
  59         #if USE_TCP
  60         // Open TCP Connection
  61         gSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
  62         #else
  63         // Open UDP Connection
  64         gSocket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
  65         #endif
  66         if (gSocket == INVALID_SOCKET)
  67         {
  68                 fprintf(stderr, "Could not create socket.\n");
  69                 #if __WIN32__
  70                 WSACleanup();
  71                 #endif
  72                 exit(0);
  73         }
  74
  75         // Set server address
  76         memset((void *)&gSyscall_ServerAddr, '\0', sizeof(struct sockaddr_in));
  77         gSyscall_ServerAddr.sin_family = AF_INET;
  78         gSyscall_ServerAddr.sin_port = htons(SERVER_PORT);
  79         gSyscall_ServerAddr.sin_addr.s_addr = htonl(0x7F000001);
  80
  81         #if 0
  82         // Set client address
  83         memset((void *)&client, '\0', sizeof(struct sockaddr_in));
  84         client.sin_family = AF_INET;
  85         client.sin_port = htons(0);
  86         client.sin_addr.s_addr = htonl(0x7F000001);
  87         #endif
  88
  89         #if USE_TCP
  90         if( connect(gSocket, (struct sockaddr *)&gSyscall_ServerAddr, sizeof(struct sockaddr_in)) < 0 )
  91         {
  92                 fprintf(stderr, "[ERROR -] Cannot connect to server (localhost:%i)\n", SERVER_PORT);
  93                 fprintf(stderr, "[ERROR -] ", giSyscall_ClientID);
  94                 perror("_InitSyscalls");
  95                 #if __WIN32__
  96                 closesocket(gSocket);
  97                 WSACleanup();
  98                 #else
  99                 close(gSocket);
 100                 #endif
 101                 exit(0);
 102         }
 103         giSyscall_ClientID = gSocket;   // A bit of a hack really :(
 104         #endif
 105
 106         #if 0
 107         // Bind
 108         if( bind(gSocket, (struct sockaddr *)&client, sizeof(struct sockaddr_in)) == -1 )
 109         {
 110                 fprintf(stderr, "Cannot bind address to socket.\n");
 111                 #if __WIN32__
 112                 closesocket(gSocket);
 113                 WSACleanup();
 114                 #else
 115                 close(gSocket);
 116                 #endif
 117                 exit(0);
 118         }
 119         #endif
 120
 121         #if !USE_TCP
 122         // Ask server for a client ID
 123         if( !giSyscall_ClientID )
 124         {
 125                 tRequestHeader  req;
 126                  int    len;
 127                 req.ClientID = 0;
 128                 req.CallID = 0;
 129                 req.NParams = 0;
 130
 131                 SendData(&req, sizeof(req));
 132
 133                 len = ReadData(&req, sizeof(req), 5);
 134                 if( len == 0 ) {
 135                         fprintf(stderr, "Unable to connect to server (localhost:%i)\n", SERVER_PORT);
 136                         exit(-1);
 137                 }
 138
 139                 giSyscall_ClientID = req.ClientID;
 140         }
 141         #endif
 142
 143         return 0;
 144 }
 145
 146 int SendRequest(tRequestHeader *Request, int RequestSize, int ResponseSize)
 147 {
 148         if( gSocket == INVALID_SOCKET )
 149         {
 150                 _InitSyscalls();
 151         }
 152
 153         // Set header
 154         Request->ClientID = giSyscall_ClientID;
 155
 156         #if 0
 157         {
 158                 for(i=0;i<RequestSize;i++)
 159                 {
 160                         printf("%02x ", ((uint8_t*)Request)[i]);
 161                         if( i % 16 == 15 )      printf("\n");
 162                 }
 163                 printf("\n");
 164         }
 165         #endif
 166         {
 167                  int    i;
 168                 char    *data = (char*)&Request->Params[Request->NParams];
 169                 DEBUG_S("Request #%i (%s) -", Request->CallID, casSYSCALL_NAMES[Request->CallID]);
 170                 for( i = 0; i < Request->NParams; i ++ )
 171                 {
 172                         switch(Request->Params[i].Type)
 173                         {
 174                         case ARG_TYPE_INT32:
 175                                 DEBUG_S(" 0x%08x", *(uint32_t*)data);
 176                                 data += sizeof(uint32_t);
 177                                 break;
 178                         case ARG_TYPE_INT64:
 179                                 DEBUG_S(" 0x%016llx", *(uint64_t*)data);
 180                                 data += sizeof(uint64_t);
 181                                 break;
 182                         case ARG_TYPE_STRING:
 183                                 DEBUG_S(" '%s'", (char*)data);
 184                                 data += Request->Params[i].Length;
 185                                 break;
 186                         case ARG_TYPE_DATA:
 187                                 DEBUG_S(" %p:0x%x", (char*)data, Request->Params[i].Length);
 188                                 if( !(Request->Params[i].Flags & ARG_FLAG_ZEROED) )
 189                                         data += Request->Params[i].Length;
 190                                 break;
 191                         }
 192                 }
 193                 DEBUG_S("\n");
 194         }
 195
 196         // Send it off
 197         SendData(Request, RequestSize);
 198
 199         if( Request->CallID == SYS_EXIT )       return 0;
 200
 201         // Wait for a response (no timeout)
 202         return ReadData(Request, ResponseSize, 0);
 203 }
 204
 205 void SendData(void *Data, int Length)
 206 {
 207          int    len;
 208
 209         #if USE_TCP
 210         len = send(Data, Length, 0);
 211         #else
 212         len = sendto(gSocket, Data, Length, 0,
 213                 (struct sockaddr*)&gSyscall_ServerAddr, sizeof(gSyscall_ServerAddr));
 214         #endif
 215
 216         if( len != Length ) {
 217                 fprintf(stderr, "[ERROR %i] ", giSyscall_ClientID);
 218                 perror("SendData");
 219                 exit(-1);
 220         }
 221 }
 222
 223 int ReadData(void *Dest, int MaxLength, int Timeout)
 224 {
 225          int    ret;
 226         fd_set  fds;
 227         struct timeval  tv;
 228         struct timeval  *timeoutPtr;
 229
 230         FD_ZERO(&fds);
 231         FD_SET(gSocket, &fds);
 232
 233         if( Timeout ) {
 234                 tv.tv_sec = Timeout;
 235                 tv.tv_usec = 0;
 236                 timeoutPtr = &tv;
 237         }
 238         else {
 239                 timeoutPtr = NULL;
 240         }
 241
 242         ret = select(gSocket+1, &fds, NULL, NULL, timeoutPtr);
 243         if( ret == -1 ) {
 244                 fprintf(stderr, "[ERROR %i] ", giSyscall_ClientID);
 245                 perror("ReadData - select");
 246                 exit(-1);
 247         }
 248
 249         if( !ret ) {
 250                 printf("[ERROR %i] Timeout reading from socket\n", giSyscall_ClientID);
 251                 return 0;       // Timeout
 252         }
 253
 254         #if USE_TCP
 255         ret = recv(gSocket, Dest, MaxLength, 0);
 256         #else
 257         ret = recvfrom(gSocket, Dest, MaxLength, 0, NULL, 0);
 258         #endif
 259
 260         if( ret < 0 ) {
 261                 fprintf(stderr, "[ERROR %i] ", giSyscall_ClientID);
 262                 perror("ReadData");
 263                 exit(-1);
 264         }
 265
 266         DEBUG_S("%i bytes read from socket\n", ret);
 267
 268         return ret;
 269 }