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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 2011-2025 Free Software Foundation, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General
Public License along with this library. If not, see
<http://www.gnu.org/licenses/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <string.h>
#include <stdlib.h>
#include <mailutils/cidr.h>
#include <mailutils/errno.h>
int
_mu_inaddr_to_bytes (int af, void *buf, unsigned char *bytes)
{
size_t len;
switch (af)
{
case AF_INET:
len = 4;
break;
#ifdef MAILUTILS_IPV6
case AF_INET6:
len = 16;
break;
#endif
default:
len = 0;
}
memcpy (bytes, buf, len);
return len;
}
int
_mu_sockaddr_to_bytes (unsigned char *bytes, struct sockaddr const *sa)
{
void *buf;
switch (sa->sa_family)
{
case AF_INET:
buf = &(((struct sockaddr_in*)sa)->sin_addr.s_addr);
break;
#ifdef MAILUTILS_IPV6
case AF_INET6:
buf = &(((struct sockaddr_in6*)sa)->sin6_addr);
break;
#endif
default:
return 0;
}
return _mu_inaddr_to_bytes (sa->sa_family, buf, bytes);
}
int
mu_cidr_from_sockaddr (struct mu_cidr *cidr, const struct sockaddr *sa)
{
unsigned char address[MU_INADDR_BYTES];
int len;
int i;
len = _mu_sockaddr_to_bytes (address, sa);
if (len == 0)
return MU_ERR_FAMILY;
cidr->family = sa->sa_family;
cidr->len = len;
memcpy (cidr->address, address, sizeof (cidr->address));
for (i = 0; i < MU_INADDR_BYTES; i++)
cidr->netmask[i] = 0xff;
return 0;
}
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