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/*
This file is part of GNUnet.
(C) 2004, 2005, 2006 Christian Grothoff (and other contributing authors)
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 2, or (at your
option) any later version.
GNUnet 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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
/**
* @file util/os_network.c
* @brief function to determine available network interfaces
* @author Nils Durner
* @author Heikki Lindholm
* @author Jake Dust
* @author LRN
*/
#include "platform.h"
#include "gnunet_common.h"
#include "gnunet_os_lib.h"
#define LOG(kind,...) GNUNET_log_from (kind, "util", __VA_ARGS__)
#define LOG_STRERROR_FILE(kind,syscall,filename) GNUNET_log_from_strerror_file (kind, "util", syscall, filename)
/**
* @brief Enumerate all network interfaces
*
* @param proc the callback function
* @param proc_cls closure for proc
*/
void
GNUNET_OS_network_interfaces_list (GNUNET_OS_NetworkInterfaceProcessor proc,
void *proc_cls)
{
#ifdef MINGW
int r;
int i;
struct EnumNICs3_results *results = NULL;
int results_count;
r = EnumNICs3 (&results, &results_count);
if (r != GNUNET_OK)
return;
for (i = 0; i < results_count; i++)
{
if (GNUNET_OK !=
proc (proc_cls, results[i].pretty_name, results[i].is_default,
&results[i].address,
results[i].flags & ENUMNICS3_MASK_OK ? &results[i].mask : NULL,
results[i].
flags & ENUMNICS3_BCAST_OK ? &results[i].broadcast : NULL,
results[i].addr_size))
break;
}
EnumNICs3_free (results);
return;
#elif HAVE_GETIFADDRS && HAVE_FREEIFADDRS
struct ifaddrs *ifa_first;
struct ifaddrs *ifa_ptr;
socklen_t alen;
if (getifaddrs (&ifa_first) == 0)
{
for (ifa_ptr = ifa_first; ifa_ptr != NULL; ifa_ptr = ifa_ptr->ifa_next)
{
if (ifa_ptr->ifa_name != NULL && ifa_ptr->ifa_addr != NULL &&
(ifa_ptr->ifa_flags & IFF_UP) != 0)
{
if ((ifa_ptr->ifa_addr->sa_family != AF_INET) &&
(ifa_ptr->ifa_addr->sa_family != AF_INET6))
continue;
if (ifa_ptr->ifa_addr->sa_family == AF_INET)
alen = sizeof (struct sockaddr_in);
else
alen = sizeof (struct sockaddr_in6);
if (GNUNET_OK !=
proc (proc_cls, ifa_ptr->ifa_name,
0 == strcmp (ifa_ptr->ifa_name, GNUNET_DEFAULT_INTERFACE),
ifa_ptr->ifa_addr, ifa_ptr->ifa_broadaddr,
ifa_ptr->ifa_netmask, alen))
break;
}
}
freeifaddrs (ifa_first);
}
#else
char line[1024];
const char *start;
char ifc[12];
char addrstr[128];
FILE *f;
int have_ifc;
struct sockaddr_in a4;
struct sockaddr_in6 a6;
struct in_addr v4;
struct in6_addr v6;
if (system ("ifconfig -a > /dev/null 2> /dev/null"))
if (system ("/sbin/ifconfig -a > /dev/null 2> /dev/null") == 0)
f = popen ("/sbin/ifconfig -a 2> /dev/null", "r");
else
f = NULL;
else
f = popen ("ifconfig -a 2> /dev/null", "r");
if (!f)
{
LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING | GNUNET_ERROR_TYPE_BULK,
"popen", "ifconfig");
return;
}
have_ifc = GNUNET_NO;
ifc[11] = '\0';
while (NULL != fgets (line, sizeof (line), f))
{
if (strlen (line) == 0)
{
have_ifc = GNUNET_NO;
continue;
}
if (!isspace (line[0]))
{
have_ifc = (1 == SSCANF (line, "%11s", ifc)) ? GNUNET_YES : GNUNET_NO;
/* would end with ':' on OSX, fix it! */
if (ifc[strlen (ifc) - 1] == ':')
ifc[strlen (ifc) - 1] = '\0';
continue;
}
if (!have_ifc)
continue; /* strange input, hope for the best */
start = line;
while (('\0' != *start) && (isspace (*start)))
start++;
if ( /* Linux */
(1 == SSCANF (start, "inet addr:%127s", addrstr)) ||
(1 == SSCANF (start, "inet6 addr:%127s", addrstr)) ||
/* Solaris, OS X */
(1 == SSCANF (start, "inet %127s", addrstr)) ||
(1 == SSCANF (start, "inet6 %127s", addrstr)))
{
/* IPv4 */
if (1 == inet_pton (AF_INET, addrstr, &v4))
{
memset (&a4, 0, sizeof (a4));
a4.sin_family = AF_INET;
#if HAVE_SOCKADDR_IN_SIN_LEN
a4.sin_len = (u_char) sizeof (struct sockaddr_in);
#endif
a4.sin_addr = v4;
if (GNUNET_OK !=
proc (proc_cls, ifc, 0 == strcmp (ifc, GNUNET_DEFAULT_INTERFACE),
(const struct sockaddr *) &a4,
/* TODO broadcast and netmask */
NULL, NULL, sizeof (a4)))
break;
continue;
}
/* IPv6 */
if (1 == inet_pton (AF_INET6, addrstr, &v6))
{
memset (&a6, 0, sizeof (a6));
a6.sin6_family = AF_INET6;
#if HAVE_SOCKADDR_IN_SIN_LEN
a6.sin6_len = (u_char) sizeof (struct sockaddr_in6);
#endif
a6.sin6_addr = v6;
if (GNUNET_OK !=
proc (proc_cls, ifc, 0 == strcmp (ifc, GNUNET_DEFAULT_INTERFACE),
(const struct sockaddr *) &a6,
/* TODO broadcast and netmask */
NULL, NULL, sizeof (a6)))
break;
continue;
}
}
}
pclose (f);
#endif
}
/* end of os_network.c */
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