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#include <stdlib.h>
#include <errno.h>
#include <stdint.h>
#include <limits.h>
#include <arpa/inet.h>
#include "main.h"
#include "utils.h"
uint16_t sockaddr_port(struct sockaddr_in46 *addr)
{
switch (addr->storage.ss_family) {
case AF_INET:
return ntohs(addr->in4.sin_port);
case AF_INET6:
return ntohs(addr->in6.sin6_port);
default:
return 0;
}
}
char *
sockaddr_to_str(struct sockaddr_in46 *addr, char *buf, size_t buflen)
{
char abuf[ADDRSTRLEN];
switch (addr->storage.ss_family) {
case AF_INET:
snprintf(buf, buflen, "AF_INET4 %s %u",
inet_ntop(addr->in4.sin_family, &addr->in4.sin_addr, abuf, sizeof(abuf)),
(unsigned)ntohs(addr->in4.sin_port));
break;
case AF_INET6:
snprintf(buf, buflen, "AF_INET6 %s %u",
inet_ntop(addr->in6.sin6_family, &addr->in6.sin6_addr, abuf, sizeof(abuf)),
(unsigned)ntohs(addr->in6.sin6_port));
break;
default:
snprintf(buf, buflen, "AF_UNKNOWN");
break;
}
return buf;
}
int
strtou16_strict(const char *str, uint16_t *result)
{
char *end;
long val;
if (!str)
return -EINVAL;
errno = 0;
val = strtol(str, &end, 10);
if (errno == ERANGE && (val == LONG_MAX || val == LONG_MIN))
return -EINVAL;
if (errno != 0 && val == 0)
return -EINVAL;
if (end == str)
return -EINVAL;
if (*end != '\0')
return -EINVAL;
if (val < 1 || val > UINT16_MAX)
return -EINVAL;
if (result)
*result = val;
return 0;
}
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