reactos/base/services/dhcp/compat.c

   1 #include "rosdhcp.h"
   2 #include "dhcpd.h"
   3 #include "stdint.h"
   4
   5 size_t strlcpy(char *d, const char *s, size_t bufsize)
   6 {
   7         size_t len = strlen(s);
   8         size_t ret = len;
   9         if (bufsize > 0) {
  10                 if (len >= bufsize)
  11                         len = bufsize-1;
  12                 memcpy(d, s, len);
  13                 d[len] = 0;
  14         }
  15         return ret;
  16 }
  17
  18 // not really random :(
  19 u_int32_t arc4random()
  20 {
  21         static int did_srand = 0;
  22         u_int32_t ret;
  23
  24         if (!did_srand) {
  25                 srand(0);
  26                 did_srand = 1;
  27         }
  28
  29         ret = rand() << 10 ^ rand();
  30         return ret;
  31 }
  32
  33
  34 int inet_aton(const char *cp, struct in_addr *inp)
  35 /* inet_addr code from ROS, slightly modified. */
  36 {
  37         ULONG Octets[4] = {0,0,0,0};
  38         ULONG i = 0;
  39
  40         if(!cp)
  41                 return 0;
  42
  43         while(*cp)
  44         {
  45                 CHAR c = *cp;
  46                 cp++;
  47
  48                 if(c == '.')
  49                 {
  50                         i++;
  51                         continue;
  52                 }
  53
  54                 if(c < '0' || c > '9')
  55                         return 0;
  56
  57                 Octets[i] *= 10;
  58                 Octets[i] += (c - '0');
  59
  60                 if(Octets[i] > 255)
  61                         return 0;
  62                 }
  63
  64         inp->S_un.S_addr = (Octets[3] << 24) + (Octets[2] << 16) + (Octets[1] << 8) + Octets[0];
  65         return 1;
  66 }
  67