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#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdlib.h>
/* inet_aton() converts the Internet host address cp from the standard
* numbers-and-dots notation into binary data and stores it in the
* structure that inp points to. inet_aton returns nonzero if the
* address is valid, zero if not. */
/* problem is, inet_aton is historically quite, uh, lenient.
* the following are all acceptable:
* 0x7f000001 == 127.1 == 127.0.0.1.0 == 127.0.0.1
* btw: 127.0.0.x.y == 127.0.0.(x|y)
* and: 10.1.1 == 10.1.0.1 (huh?!)
* and: 10 == 0.0.0.10 (?!?!?)
* The Berkeley people must have been so stoned that they are still high.
*/
/* I hereby disclaim that I wrote this code. */
int inet_aton(const char *cp, struct in_addr *inp) {
int i;
unsigned int ip=0;
char *tmp=(char*)cp;
for (i=24; ;) {
long j;
j=strtol(tmp,&tmp,0);
if (*tmp==0) {
ip|=j;
break;
}
if (*tmp=='.') {
if (j>255) return 0;
ip|=(j<<i);
if (i>0) i-=8;
++tmp;
continue;
}
return 0;
}
inp->s_addr=htonl(ip);
return 1;
}
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