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 // === CODE ===
  15 int SoMain(void)
  16 {
  17         return 0;
  18 }
  19
  20 int Net_GetAddressSize(int AddressType)
  21 {
  22         switch(AddressType)
  23         {
  24         case 4: return 4;       // IPv4
  25         case 6: return 16;      // IPv6
  26         default:
  27                 return 0;
  28         }
  29 }
  30
  31 //TODO: Move out to another file
  32 char *Net_GetInterface(int AddressType, void *Address)
  33 {
  34          int    size, routeNum;
  35          int    fd;
  36         size = Net_GetAddressSize(AddressType);
  37
  38         if( size == 0 ) {
  39                 fprintf(stderr, "BUG: AddressType = %i unknown\n", AddressType);
  40                 return NULL;
  41         }
  42
  43         // Query the route manager for the route number
  44         {
  45                 char    buf[sizeof(int)+size];
  46
  47                 // Open
  48                 fd = open("/Devices/ip/routes", 0);
  49                 if( !fd ) {
  50                         fprintf(stderr, "ERROR: It seems that '/Devices/ip/routes' does not exist, are you running Acess2?\n");
  51                         return NULL;
  52                 }
  53
  54                 // Make structure and ask
  55                 *(int*)buf = AddressType;
  56                 memcpy(&buf[sizeof(int)], Address, size);
  57                 routeNum = ioctl(fd, ioctl(fd, 3, "locate_route"), buf);
  58
  59                 // Close
  60                 close(fd);
  61         }
  62
  63         // Check answer validity
  64         if( routeNum > 0 ) {
  65                  int    len = sprintf(NULL, "/Devices/ip/routes/%i", routeNum);
  66                 char    buf[len+1];
  67                 char    *ret;
  68
  69                 sprintf(buf, "/Devices/ip/routes/%i", routeNum);
  70
  71                 // Open route
  72                 fd = open(buf, 0);
  73                 if( !fd )       return NULL;    // Shouldn't happen :/
  74
  75                 // Allocate space for name
  76                 ret = malloc( ioctl(fd, ioctl(fd, 3, "get_interface"), NULL) + 1 );
  77                 if( !ret ) {
  78                         fprintf(stderr, "malloc() failure - Allocating space for interface name\n");
  79                         return NULL;
  80                 }
  81
  82                 // Get name
  83                 ioctl(fd, ioctl(fd, 3, "get_interface"), ret);
  84
  85                 // Close and return
  86                 close(fd);
  87
  88                 return ret;
  89         }
  90
  91         return NULL;    // Error
  92 }