reactos/base/services/dhcpcsvc/dhcp/compat.c

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