AcessNative/ld-acess_src/request.c

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