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3 Copyright (C) 2004, 2005, 2006 Christian Grothoff (and other contributing authors)
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6 it under the terms of the GNU General Public License as published
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11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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22 * @file util/os_network.c
23 * @brief function to determine available network interfaces
25 * @author Heikki Lindholm
30 #include "gnunet_util_lib.h"
33 #define LOG(kind,...) GNUNET_log_from (kind, "util", __VA_ARGS__)
34 #define LOG_STRERROR_FILE(kind,syscall,filename) GNUNET_log_from_strerror_file (kind, "util", syscall, filename)
37 * @brief Enumerate all network interfaces
39 * @param proc the callback function
40 * @param proc_cls closure for @a proc
43 GNUNET_OS_network_interfaces_list (GNUNET_OS_NetworkInterfaceProcessor proc,
49 struct EnumNICs3_results *results = NULL;
52 r = EnumNICs3 (&results, &results_count);
56 for (i = 0; i < results_count; i++)
59 proc (proc_cls, results[i].pretty_name, results[i].is_default,
60 (const struct sockaddr *) &results[i].address,
62 flags & ENUMNICS3_BCAST_OK ?
63 (const struct sockaddr *) &results[i].broadcast : NULL,
64 results[i].flags & ENUMNICS3_MASK_OK ?
65 (const struct sockaddr *) &results[i].mask : NULL,
66 results[i].addr_size))
69 EnumNICs3_free (results);
72 #elif HAVE_GETIFADDRS && HAVE_FREEIFADDRS
74 struct ifaddrs *ifa_first;
75 struct ifaddrs *ifa_ptr;
78 if (getifaddrs (&ifa_first) == 0)
80 for (ifa_ptr = ifa_first; ifa_ptr != NULL; ifa_ptr = ifa_ptr->ifa_next)
82 if (ifa_ptr->ifa_name != NULL && ifa_ptr->ifa_addr != NULL &&
83 (ifa_ptr->ifa_flags & IFF_UP) != 0)
85 if ((ifa_ptr->ifa_addr->sa_family != AF_INET) &&
86 (ifa_ptr->ifa_addr->sa_family != AF_INET6))
88 if (ifa_ptr->ifa_addr->sa_family == AF_INET)
89 alen = sizeof (struct sockaddr_in);
91 alen = sizeof (struct sockaddr_in6);
93 proc (proc_cls, ifa_ptr->ifa_name,
94 0 == strcmp (ifa_ptr->ifa_name, GNUNET_DEFAULT_INTERFACE),
95 ifa_ptr->ifa_addr, ifa_ptr->ifa_broadaddr,
96 ifa_ptr->ifa_netmask, alen))
100 freeifaddrs (ifa_first);
110 char netmaskstr[128];
113 struct sockaddr_in a4;
114 struct sockaddr_in6 a6;
117 struct sockaddr_in bcaddr;
118 struct sockaddr_in netmask;
119 struct sockaddr_in6 netmask6;
120 struct sockaddr *pass_bcaddr;
121 struct sockaddr *pass_netmask;
124 if (system ("ifconfig -a > /dev/null 2> /dev/null"))
125 if (system ("/sbin/ifconfig -a > /dev/null 2> /dev/null") == 0)
126 f = popen ("/sbin/ifconfig -a 2> /dev/null", "r");
130 f = popen ("ifconfig -a 2> /dev/null", "r");
133 LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING | GNUNET_ERROR_TYPE_BULK,
134 "popen", "ifconfig");
138 have_ifc = GNUNET_NO;
140 while (NULL != fgets (line, sizeof (line), f))
142 if (strlen (line) == 0)
144 have_ifc = GNUNET_NO;
147 if (!isspace (line[0]))
149 have_ifc = (1 == SSCANF (line, "%11s", ifc)) ? GNUNET_YES : GNUNET_NO;
150 /* would end with ':' on OSX, fix it! */
151 if (ifc[strlen (ifc) - 1] == ':')
152 ifc[strlen (ifc) - 1] = '\0';
156 continue; /* strange input, hope for the best */
158 /* make parsing of ipv6 addresses easier */
159 for (replace = line; *replace != '\0'; replace++)
167 while (('\0' != *start) && (isspace (*start)))
170 /* Zero-out stack allocated values */
171 memset (addrstr, 0, 128);
172 memset (netmaskstr, 0, 128);
173 memset (bcstr, 0, 128);
177 (3 == SSCANF (start, "inet addr:%127s Bcast:%127s Mask:%127s", addrstr, bcstr, netmaskstr)) ||
178 (2 == SSCANF (start, "inet addr:%127s Mask:%127s", addrstr, netmaskstr)) ||
179 (2 == SSCANF (start, "inet6 addr:%127s %d", addrstr, &prefixlen)) ||
181 (1 == SSCANF (start, "inet %127s", addrstr)) ||
182 (1 == SSCANF (start, "inet6 %127s", addrstr)))
185 if (1 == inet_pton (AF_INET, addrstr, &v4))
187 memset (&a4, 0, sizeof (a4));
188 a4.sin_family = AF_INET;
189 #if HAVE_SOCKADDR_IN_SIN_LEN
190 a4.sin_len = (u_char) sizeof (struct sockaddr_in);
196 if (1 == inet_pton (AF_INET, bcstr, &v4))
198 memset (&bcaddr, 0, sizeof (bcaddr));
199 bcaddr.sin_family = AF_INET;
200 #if HAVE_SOCKADDR_IN_SIN_LEN
201 bcaddr.sin_len = (u_char) sizeof (struct sockaddr_in);
203 bcaddr.sin_addr = v4;
204 pass_bcaddr = (struct sockaddr *) &bcaddr;
206 if (1 == inet_pton (AF_INET, netmaskstr, &v4))
208 memset (&netmask, 0, sizeof (netmask));
209 netmask.sin_family = AF_INET;
210 #if HAVE_SOCKADDR_IN_SIN_LEN
211 netmask.sin_len = (u_char) sizeof (struct sockaddr_in);
213 netmask.sin_addr = v4;
214 pass_netmask = (struct sockaddr *) &netmask;
219 proc (proc_cls, ifc, 0 == strcmp (ifc, GNUNET_DEFAULT_INTERFACE),
220 (const struct sockaddr *) &a4,
221 pass_bcaddr, pass_netmask, sizeof (a4)))
226 if (1 == inet_pton (AF_INET6, addrstr, &v6))
228 memset (&a6, 0, sizeof (a6));
229 a6.sin6_family = AF_INET6;
230 #if HAVE_SOCKADDR_IN_SIN_LEN
231 a6.sin6_len = (u_char) sizeof (struct sockaddr_in6);
238 memset (v6.s6_addr, 0, sizeof (v6.s6_addr));
239 for (i = 0; i < prefixlen; i++)
241 v6.s6_addr[i >> 3] |= 1 << (i & 7);
243 memset (&netmask6, 0, sizeof (netmask6));
244 netmask6.sin6_family = AF_INET6;
245 #if HAVE_SOCKADDR_IN_SIN_LEN
246 netmask6.sin6_len = (u_char) sizeof (struct sockaddr_in6);
248 netmask6.sin6_addr = v6;
250 pass_netmask = (struct sockaddr *) &netmask6;
254 proc (proc_cls, ifc, 0 == strcmp (ifc, GNUNET_DEFAULT_INTERFACE),
255 (const struct sockaddr *) &a6,
256 NULL, pass_netmask, sizeof (a6)))
267 /* end of os_network.c */