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68 lines
1 KiB
C
68 lines
1 KiB
C
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#include "rosdhcp.h"
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#include "dhcpd.h"
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#include "stdint.h"
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size_t strlcpy(char *d, const char *s, size_t bufsize)
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{
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size_t len = strlen(s);
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size_t ret = len;
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if (bufsize > 0) {
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if (len >= bufsize)
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len = bufsize-1;
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memcpy(d, s, len);
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d[len] = 0;
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}
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return ret;
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}
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// not really random :(
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u_int32_t arc4random()
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{
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static int did_srand = 0;
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u_int32_t ret;
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if (!did_srand) {
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srand(0);
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did_srand = 1;
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}
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ret = rand() << 10 ^ rand();
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return ret;
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}
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int inet_aton(const char *cp, struct in_addr *inp)
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/* inet_addr code from ROS, slightly modified. */
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{
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ULONG Octets[4] = {0,0,0,0};
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ULONG i = 0;
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if(!cp)
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return 0;
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while(*cp)
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{
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CHAR c = *cp;
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cp++;
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if(c == '.')
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{
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i++;
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continue;
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}
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if(c < '0' || c > '9')
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return 0;
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Octets[i] *= 10;
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Octets[i] += (c - '0');
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if(Octets[i] > 255)
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return 0;
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}
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inp->S_un.S_addr = (Octets[3] << 24) + (Octets[2] << 16) + (Octets[1] << 8) + Octets[0];
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return 1;
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}
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