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-rw-r--r--src/util/os_network.c270
1 files changed, 270 insertions, 0 deletions
diff --git a/src/util/os_network.c b/src/util/os_network.c
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--- /dev/null
+++ b/src/util/os_network.c
@@ -0,0 +1,270 @@
+/*
+ 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,
+ (const struct sockaddr *) &results[i].address,
+ results[i].
+ flags & ENUMNICS3_BCAST_OK ?
+ (const struct sockaddr *) &results[i].broadcast : NULL,
+ results[i].flags & ENUMNICS3_MASK_OK ?
+ (const struct sockaddr *) &results[i].mask : 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
+ int i;
+ char line[1024];
+ char *replace;
+ const char *start;
+ char ifc[12];
+ char addrstr[128];
+ char bcstr[128];
+ char netmaskstr[128];
+ FILE *f;
+ int have_ifc;
+ struct sockaddr_in a4;
+ struct sockaddr_in6 a6;
+ struct in_addr v4;
+ struct in6_addr v6;
+ struct sockaddr_in bcaddr;
+ struct sockaddr_in netmask;
+ struct sockaddr_in6 netmask6;
+ struct sockaddr *pass_bcaddr;
+ struct sockaddr *pass_netmask;
+ int prefixlen;
+
+ 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 */
+
+ /* make parsing of ipv6 addresses easier */
+ for (replace = line; *replace != '\0'; replace++)
+ {
+ if (*replace == '/')
+ *replace = ' ';
+ }
+ prefixlen = -1;
+
+ start = line;
+ while (('\0' != *start) && (isspace (*start)))
+ start++;
+
+ /* Zero-out stack allocated values */
+ memset (addrstr, 0, 128);
+ memset (netmaskstr, 0, 128);
+ memset (bcstr, 0, 128);
+ prefixlen = 0;
+
+ if ( /* Linux */
+ (3 == SSCANF (start, "inet addr:%127s Bcast:%127s Mask:%127s", addrstr, bcstr, netmaskstr)) ||
+ (2 == SSCANF (start, "inet addr:%127s Mask:%127s", addrstr, netmaskstr)) ||
+ (2 == SSCANF (start, "inet6 addr:%127s %d", addrstr, &prefixlen)) ||
+ /* 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;
+
+ pass_bcaddr = NULL;
+ pass_netmask = NULL;
+ if (1 == inet_pton (AF_INET, bcstr, &v4))
+ {
+ memset (&bcaddr, 0, sizeof (bcaddr));
+ bcaddr.sin_family = AF_INET;
+#if HAVE_SOCKADDR_IN_SIN_LEN
+ bcaddr.sin_len = (u_char) sizeof (struct sockaddr_in);
+#endif
+ bcaddr.sin_addr = v4;
+ pass_bcaddr = (struct sockaddr *) &bcaddr;
+ }
+ if (1 == inet_pton (AF_INET, netmaskstr, &v4))
+ {
+ memset (&netmask, 0, sizeof (netmask));
+ netmask.sin_family = AF_INET;
+#if HAVE_SOCKADDR_IN_SIN_LEN
+ netmask.sin_len = (u_char) sizeof (struct sockaddr_in);
+#endif
+ netmask.sin_addr = v4;
+ pass_netmask = (struct sockaddr *) &netmask;
+ }
+
+
+ if (GNUNET_OK !=
+ proc (proc_cls, ifc, 0 == strcmp (ifc, GNUNET_DEFAULT_INTERFACE),
+ (const struct sockaddr *) &a4,
+ pass_bcaddr, pass_netmask, 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;
+
+ pass_netmask = NULL;
+ if (prefixlen != -1)
+ {
+ memset (v6.s6_addr, 0, sizeof (v6.s6_addr));
+ for (i = 0; i < prefixlen; i++)
+ {
+ v6.s6_addr[i >> 3] |= 1 << (i & 7);
+ }
+ memset (&netmask6, 0, sizeof (netmask6));
+ netmask6.sin6_family = AF_INET6;
+#if HAVE_SOCKADDR_IN_SIN_LEN
+ netmask6.sin6_len = (u_char) sizeof (struct sockaddr_in6);
+#endif
+ netmask6.sin6_addr = v6;
+
+ pass_netmask = (struct sockaddr *) &netmask6;
+ }
+
+ if (GNUNET_OK !=
+ proc (proc_cls, ifc, 0 == strcmp (ifc, GNUNET_DEFAULT_INTERFACE),
+ (const struct sockaddr *) &a6,
+ NULL, pass_netmask, sizeof (a6)))
+ break;
+ continue;
+ }
+ }
+ }
+ pclose (f);
+#endif
+}
+
+
+/* end of os_network.c */
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-11-21 14:04:22 +0000