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13 General Public License for more details.
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23 * @file util/os_network.c
24 * @brief function to determine available network interfaces
26 * @author Heikki Lindholm
31 #include "gnunet_util_lib.h"
34 #define LOG(kind,...) GNUNET_log_from (kind, "util", __VA_ARGS__)
35 #define LOG_STRERROR_FILE(kind,syscall,filename) GNUNET_log_from_strerror_file (kind, "util", syscall, filename)
38 * @brief Enumerate all network interfaces
40 * @param proc the callback function
41 * @param proc_cls closure for proc
44 GNUNET_OS_network_interfaces_list (GNUNET_OS_NetworkInterfaceProcessor proc,
50 struct EnumNICs3_results *results = NULL;
53 r = EnumNICs3 (&results, &results_count);
57 for (i = 0; i < results_count; i++)
60 proc (proc_cls, results[i].pretty_name, results[i].is_default,
61 (const struct sockaddr *) &results[i].address,
63 flags & ENUMNICS3_BCAST_OK ?
64 (const struct sockaddr *) &results[i].broadcast : NULL,
65 results[i].flags & ENUMNICS3_MASK_OK ?
66 (const struct sockaddr *) &results[i].mask : NULL,
67 results[i].addr_size))
70 EnumNICs3_free (results);
73 #elif HAVE_GETIFADDRS && HAVE_FREEIFADDRS
75 struct ifaddrs *ifa_first;
76 struct ifaddrs *ifa_ptr;
79 if (getifaddrs (&ifa_first) == 0)
81 for (ifa_ptr = ifa_first; ifa_ptr != NULL; ifa_ptr = ifa_ptr->ifa_next)
83 if (ifa_ptr->ifa_name != NULL && ifa_ptr->ifa_addr != NULL &&
84 (ifa_ptr->ifa_flags & IFF_UP) != 0)
86 if ((ifa_ptr->ifa_addr->sa_family != AF_INET) &&
87 (ifa_ptr->ifa_addr->sa_family != AF_INET6))
89 if (ifa_ptr->ifa_addr->sa_family == AF_INET)
90 alen = sizeof (struct sockaddr_in);
92 alen = sizeof (struct sockaddr_in6);
94 proc (proc_cls, ifa_ptr->ifa_name,
95 0 == strcmp (ifa_ptr->ifa_name, GNUNET_DEFAULT_INTERFACE),
96 ifa_ptr->ifa_addr, ifa_ptr->ifa_broadaddr,
97 ifa_ptr->ifa_netmask, alen))
101 freeifaddrs (ifa_first);
111 char netmaskstr[128];
114 struct sockaddr_in a4;
115 struct sockaddr_in6 a6;
118 struct sockaddr_in bcaddr;
119 struct sockaddr_in netmask;
120 struct sockaddr_in6 netmask6;
121 struct sockaddr *pass_bcaddr;
122 struct sockaddr *pass_netmask;
125 if (system ("ifconfig -a > /dev/null 2> /dev/null"))
126 if (system ("/sbin/ifconfig -a > /dev/null 2> /dev/null") == 0)
127 f = popen ("/sbin/ifconfig -a 2> /dev/null", "r");
131 f = popen ("ifconfig -a 2> /dev/null", "r");
134 LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING | GNUNET_ERROR_TYPE_BULK,
135 "popen", "ifconfig");
139 have_ifc = GNUNET_NO;
141 while (NULL != fgets (line, sizeof (line), f))
143 if (strlen (line) == 0)
145 have_ifc = GNUNET_NO;
148 if (!isspace (line[0]))
150 have_ifc = (1 == SSCANF (line, "%11s", ifc)) ? GNUNET_YES : GNUNET_NO;
151 /* would end with ':' on OSX, fix it! */
152 if (ifc[strlen (ifc) - 1] == ':')
153 ifc[strlen (ifc) - 1] = '\0';
157 continue; /* strange input, hope for the best */
159 /* make parsing of ipv6 addresses easier */
160 for (replace = line; *replace != '\0'; replace++)
168 while (('\0' != *start) && (isspace (*start)))
171 /* Zero-out stack allocated values */
172 memset (addrstr, 0, 128);
173 memset (netmaskstr, 0, 128);
174 memset (bcstr, 0, 128);
178 (3 == SSCANF (start, "inet addr:%127s Bcast:%127s Mask:%127s", addrstr, bcstr, netmaskstr)) ||
179 (2 == SSCANF (start, "inet addr:%127s Mask:%127s", addrstr, netmaskstr)) ||
180 (2 == SSCANF (start, "inet6 addr:%127s %d", addrstr, &prefixlen)) ||
182 (1 == SSCANF (start, "inet %127s", addrstr)) ||
183 (1 == SSCANF (start, "inet6 %127s", addrstr)))
186 if (1 == inet_pton (AF_INET, addrstr, &v4))
188 memset (&a4, 0, sizeof (a4));
189 a4.sin_family = AF_INET;
190 #if HAVE_SOCKADDR_IN_SIN_LEN
191 a4.sin_len = (u_char) sizeof (struct sockaddr_in);
197 if (1 == inet_pton (AF_INET, bcstr, &v4))
199 memset (&bcaddr, 0, sizeof (bcaddr));
200 bcaddr.sin_family = AF_INET;
201 #if HAVE_SOCKADDR_IN_SIN_LEN
202 bcaddr.sin_len = (u_char) sizeof (struct sockaddr_in);
204 bcaddr.sin_addr = v4;
205 pass_bcaddr = (struct sockaddr *) &bcaddr;
207 if (1 == inet_pton (AF_INET, netmaskstr, &v4))
209 memset (&netmask, 0, sizeof (netmask));
210 netmask.sin_family = AF_INET;
211 #if HAVE_SOCKADDR_IN_SIN_LEN
212 netmask.sin_len = (u_char) sizeof (struct sockaddr_in);
214 netmask.sin_addr = v4;
215 pass_netmask = (struct sockaddr *) &netmask;
220 proc (proc_cls, ifc, 0 == strcmp (ifc, GNUNET_DEFAULT_INTERFACE),
221 (const struct sockaddr *) &a4,
222 pass_bcaddr, pass_netmask, sizeof (a4)))
227 if (1 == inet_pton (AF_INET6, addrstr, &v6))
229 memset (&a6, 0, sizeof (a6));
230 a6.sin6_family = AF_INET6;
231 #if HAVE_SOCKADDR_IN_SIN_LEN
232 a6.sin6_len = (u_char) sizeof (struct sockaddr_in6);
239 memset (v6.s6_addr, 0, sizeof (v6.s6_addr));
240 for (i = 0; i < prefixlen; i++)
242 v6.s6_addr[i >> 3] |= 1 << (i & 7);
244 memset (&netmask6, 0, sizeof (netmask6));
245 netmask6.sin6_family = AF_INET6;
246 #if HAVE_SOCKADDR_IN_SIN_LEN
247 netmask6.sin6_len = (u_char) sizeof (struct sockaddr_in6);
249 netmask6.sin6_addr = v6;
251 pass_netmask = (struct sockaddr *) &netmask6;
255 proc (proc_cls, ifc, 0 == strcmp (ifc, GNUNET_DEFAULT_INTERFACE),
256 (const struct sockaddr *) &a6,
257 NULL, pass_netmask, sizeof (a6)))
268 /* end of os_network.c */