Usermode/Libraries/libnet.so_src/main.c

   1 /*
   2  * Acess2 Networking Toolkit
   3  * By John Hodge (thePowersGang)
   4  *
   5  * main.c
   6  * - Library main (and misc functions)
   7  */
   8 #include <net.h>
   9 #include <acess/sys.h>
  10 #include <string.h>
  11 #include <stdlib.h>
  12 #include <stdio.h>
  13
  14
  15 // === CODE ===
  16 int SoMain(void)
  17 {
  18         return 0;
  19 }
  20
  21 int Net_GetAddressSize(int AddressType)
  22 {
  23         switch(AddressType)
  24         {
  25         case 4: return 4;       // IPv4
  26         case 6: return 16;      // IPv6
  27         default:
  28                 return 0;
  29         }
  30 }
  31
  32 //TODO: Move out to another file
  33 char *Net_GetInterface(int AddressType, void *Address)
  34 {
  35          int    size, routeNum;
  36          int    fd;
  37         size = Net_GetAddressSize(AddressType);
  38
  39         if( size == 0 ) {
  40                 fprintf(stderr, "BUG: AddressType = %i unknown\n", AddressType);
  41                 return NULL;
  42         }
  43
  44         // Query the route manager for the route number
  45         {
  46                 char    buf[sizeof(int)+size];
  47                 uint32_t        *type = (void*)buf;
  48
  49                 // Open
  50                 fd = _SysOpen("/Devices/ip/routes", 0);
  51                 if( !fd ) {
  52                         fprintf(stderr, "ERROR: Unable to open '/Devices/ip/routes'\n");
  53                         return NULL;
  54                 }
  55
  56                 // Make structure and ask
  57                 *type = AddressType;
  58                 memcpy(type+1, Address, size);
  59                 routeNum = _SysIOCtl(fd, _SysIOCtl(fd, 3, "locate_route"), buf);
  60
  61                 // Close
  62                 _SysClose(fd);
  63         }
  64
  65         // Check answer validity
  66         if( routeNum > 0 ) {
  67                  int    len = sprintf(NULL, "/Devices/ip/routes/#%i", routeNum);
  68                 char    buf[len+1];
  69                 char    *ret;
  70
  71                 sprintf(buf, "/Devices/ip/routes/#%i", routeNum);
  72
  73                 // Open route
  74                 fd = _SysOpen(buf, 0);
  75                 if( fd == -1 ) {
  76                         fprintf(stderr, "Net_GetInterface - ERROR: Unable to open %s\n", buf);
  77                         return NULL;    // Shouldn't happen :/
  78                 }
  79
  80                 // Allocate space for name
  81                 ret = malloc( _SysIOCtl(fd, _SysIOCtl(fd, 3, "get_interface"), NULL) + 1 );
  82                 if( !ret ) {
  83                         fprintf(stderr, "malloc() failure - Allocating space for interface name\n");
  84                         return NULL;
  85                 }
  86
  87                 // Get name
  88                 _SysIOCtl(fd, _SysIOCtl(fd, 3, "get_interface"), ret);
  89
  90                 // Close and return
  91                 _SysClose(fd);
  92
  93                 return ret;
  94         }
  95
  96         return NULL;    // Error
  97 }