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-rw-r--r--src/util/os_network.c443
1 files changed, 0 insertions, 443 deletions
diff --git a/src/util/os_network.c b/src/util/os_network.c
deleted file mode 100644
index 9ee26f0a9..000000000
--- a/src/util/os_network.c
+++ /dev/null
@@ -1,443 +0,0 @@
1/*
2 This file is part of GNUnet.
3 Copyright (C) 2004, 2005, 2006, 2015 GNUnet e.V.
4
5 GNUnet is free software: you can redistribute it and/or modify it
6 under the terms of the GNU Affero General Public License as published
7 by the Free Software Foundation, either version 3 of the License,
8 or (at your option) any later version.
9
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Affero General Public License for more details.
14
15 You should have received a copy of the GNU Affero General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
17
18 SPDX-License-Identifier: AGPL3.0-or-later
19
20 */
21/**
22 * @file util/os_network.c
23 * @brief function to determine available network interfaces
24 * @author Nils Durner
25 * @author Heikki Lindholm
26 * @author Jake Dust
27 * @author LRN
28 * @author Christian Grothoff
29 */
30#include "platform.h"
31#include "gnunet_util_lib.h"
32
33
34#define LOG(kind, ...) GNUNET_log_from (kind, "util-os-network", __VA_ARGS__)
35#define LOG_STRERROR_FILE(kind, syscall, \
36 filename) GNUNET_log_from_strerror_file (kind, \
37 "util-os-network", \
38 syscall, \
39 filename)
40
41
42#if ! (HAVE_GETIFADDRS && HAVE_FREEIFADDRS)
43/**
44 * Try to enumerate all network interfaces using 'ifconfig'.
45 *
46 * @param proc the callback function
47 * @param proc_cls closure for @a proc
48 * @return #GNUNET_OK if it worked
49 */
50static int
51try_ifconfig (GNUNET_OS_NetworkInterfaceProcessor proc,
52 void *proc_cls)
53{
54 int i;
55 char line[1024];
56 char *replace;
57 const char *start;
58 char ifc[12];
59 char addrstr[128];
60 char bcstr[128];
61 char netmaskstr[128];
62 FILE *f;
63 int have_ifc;
64 struct sockaddr_in a4;
65 struct sockaddr_in6 a6;
66 struct in_addr v4;
67 struct in6_addr v6;
68 struct sockaddr_in bcaddr;
69 struct sockaddr_in netmask;
70 struct sockaddr_in6 netmask6;
71 struct sockaddr *pass_bcaddr;
72 struct sockaddr *pass_netmask;
73 int prefixlen;
74 static char *pcall;
75
76 if (NULL == pcall)
77 {
78 const char *sbin_ifconfig;
79
80#ifdef IFCONFIG
81 if (0 == access (IFCONFIG, X_OK))
82 sbin_ifconfig = IFCONFIG;
83 else
84#endif
85 if (0 == access ("/sbin/ifconfig", X_OK))
86 sbin_ifconfig = "/sbin/ifconfig";
87 else if (0 == access ("/usr/sbin/ifconfig", X_OK))
88 sbin_ifconfig = "/usr/sbin/ifconfig";
89 else
90 sbin_ifconfig = "ifconfig";
91 GNUNET_asprintf (&pcall,
92 "%s -a 2> /dev/null",
93 sbin_ifconfig);
94 }
95 f = popen (pcall, "r");
96 if (NULL == f)
97 {
98 LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING | GNUNET_ERROR_TYPE_BULK,
99 "popen",
100 "ifconfig");
101
102 return GNUNET_SYSERR;
103 }
104
105 have_ifc = GNUNET_NO;
106 ifc[11] = '\0';
107 while (NULL != fgets (line, sizeof(line), f))
108 {
109 if (strlen (line) == 0)
110 {
111 have_ifc = GNUNET_NO;
112 continue;
113 }
114 if (! isspace (line[0]))
115 {
116 have_ifc = (1 == sscanf (line, "%11s", ifc)) ? GNUNET_YES : GNUNET_NO;
117 /* would end with ':' on OSX, fix it! */
118 if (ifc[strlen (ifc) - 1] == ':')
119 ifc[strlen (ifc) - 1] = '\0';
120 continue;
121 }
122 if (! have_ifc)
123 continue; /* strange input, hope for the best */
124
125 /* make parsing of ipv6 addresses easier */
126 for (replace = line; *replace != '\0'; replace++)
127 {
128 if (*replace == '/')
129 *replace = ' ';
130 }
131 prefixlen = -1;
132
133 start = line;
134 while (('\0' != *start) && (isspace (*start)))
135 start++;
136
137 /* Zero-out stack allocated values */
138 memset (addrstr, 0, 128);
139 memset (netmaskstr, 0, 128);
140 memset (bcstr, 0, 128);
141 prefixlen = 0;
142
143 if ( /* Linux */
144 (3 == sscanf (start, "inet addr:%127s Bcast:%127s Mask:%127s", addrstr,
145 bcstr, netmaskstr)) ||
146 (2 == sscanf (start, "inet addr:%127s Mask:%127s", addrstr,
147 netmaskstr)) ||
148 (2 == sscanf (start, "inet6 addr:%127s %d", addrstr, &prefixlen)) ||
149 /* Solaris, OS X */
150 (1 == sscanf (start, "inet %127s", addrstr)) ||
151 (1 == sscanf (start, "inet6 %127s", addrstr)))
152 {
153 /* IPv4 */
154 if (1 == inet_pton (AF_INET, addrstr, &v4))
155 {
156 memset (&a4, 0, sizeof(a4));
157 a4.sin_family = AF_INET;
158#if HAVE_SOCKADDR_IN_SIN_LEN
159 a4.sin_len = (u_char) sizeof(struct sockaddr_in);
160#endif
161 a4.sin_addr = v4;
162
163 pass_bcaddr = NULL;
164 pass_netmask = NULL;
165 if (1 == inet_pton (AF_INET, bcstr, &v4))
166 {
167 memset (&bcaddr, 0, sizeof(bcaddr));
168 bcaddr.sin_family = AF_INET;
169#if HAVE_SOCKADDR_IN_SIN_LEN
170 bcaddr.sin_len = (u_char) sizeof(struct sockaddr_in);
171#endif
172 bcaddr.sin_addr = v4;
173 pass_bcaddr = (struct sockaddr *) &bcaddr;
174 }
175 if (1 == inet_pton (AF_INET, netmaskstr, &v4))
176 {
177 memset (&netmask, 0, sizeof(netmask));
178 netmask.sin_family = AF_INET;
179#if HAVE_SOCKADDR_IN_SIN_LEN
180 netmask.sin_len = (u_char) sizeof(struct sockaddr_in);
181#endif
182 netmask.sin_addr = v4;
183 pass_netmask = (struct sockaddr *) &netmask;
184 }
185
186
187 if (GNUNET_OK !=
188 proc (proc_cls, ifc,(0 == strcmp (ifc, GNUNET_DEFAULT_INTERFACE)),
189 (const struct sockaddr *) &a4,
190 pass_bcaddr, pass_netmask, sizeof(a4)))
191 break;
192 continue;
193 }
194 /* IPv6 */
195 if (1 == inet_pton (AF_INET6, addrstr, &v6))
196 {
197 memset (&a6, 0, sizeof(a6));
198 a6.sin6_family = AF_INET6;
199#if HAVE_SOCKADDR_IN_SIN_LEN
200 a6.sin6_len = (u_char) sizeof(struct sockaddr_in6);
201#endif
202 a6.sin6_addr = v6;
203
204 pass_netmask = NULL;
205 if (prefixlen != -1)
206 {
207 memset (v6.s6_addr, 0, sizeof(v6.s6_addr));
208 for (i = 0; i < prefixlen; i++)
209 {
210 v6.s6_addr[i >> 3] |= 1 << (i & 7);
211 }
212 memset (&netmask6, 0, sizeof(netmask6));
213 netmask6.sin6_family = AF_INET6;
214#if HAVE_SOCKADDR_IN_SIN_LEN
215 netmask6.sin6_len = (u_char) sizeof(struct sockaddr_in6);
216#endif
217 netmask6.sin6_addr = v6;
218
219 pass_netmask = (struct sockaddr *) &netmask6;
220 }
221
222 if (GNUNET_OK !=
223 proc (proc_cls, ifc,(0 == strcmp (ifc, GNUNET_DEFAULT_INTERFACE)),
224 (const struct sockaddr *) &a6,
225 NULL, pass_netmask, sizeof(a6)))
226 break;
227 continue;
228 }
229 }
230 }
231 pclose (f);
232 return GNUNET_OK;
233}
234
235
236/**
237 * Try to enumerate all network interfaces using 'ip'.
238 *
239 * @param proc the callback function
240 * @param proc_cls closure for @a proc
241 * @return #GNUNET_OK if it worked
242 */
243static int
244try_ip (GNUNET_OS_NetworkInterfaceProcessor proc,
245 void *proc_cls)
246{
247 char line[1024];
248 char *replace;
249 char ifname[64];
250 char afstr[6];
251 char addrstr[128];
252 FILE *f;
253 struct sockaddr_in a4;
254 struct sockaddr_in6 a6;
255 struct in_addr v4;
256 struct in6_addr v6;
257 struct sockaddr_in netmask;
258 struct sockaddr_in6 netmask6;
259 unsigned int i;
260 unsigned int prefixlen;
261 static char *pcall;
262
263 if (NULL == pcall)
264 {
265 const char *sbin_ip;
266
267#ifdef IFCONFIG
268 if (0 == access (PATH_TO_IP, X_OK))
269 sbin_ip = PATH_TO_IP;
270 else
271#endif
272 if (0 == access ("/sbin/ip", X_OK))
273 sbin_ip = "/sbin/ip";
274 else if (0 == access ("/usr/sbin/ip", X_OK))
275 sbin_ip = "/usr/sbin/ip";
276 else
277 sbin_ip = "if";
278 GNUNET_asprintf (&pcall,
279 "%s -o add 2> /dev/null",
280 sbin_ip);
281 }
282 f = popen (pcall, "r");
283 if (! f)
284 {
285 LOG_STRERROR_FILE (GNUNET_ERROR_TYPE_WARNING | GNUNET_ERROR_TYPE_BULK,
286 "popen",
287 "ip");
288 return GNUNET_SYSERR;
289 }
290
291 while (NULL != fgets (line, sizeof(line), f))
292 {
293 /* make parsing easier */
294 for (replace = line; *replace != '\0'; replace++)
295 {
296 if (*replace == '/')
297 *replace = ' ';
298 }
299 /* Zero-out stack allocated values */
300 memset (ifname, 0, 64);
301 memset (afstr, 0, 6);
302 memset (addrstr, 0, 128);
303 if (4 != sscanf (line,
304 "%*u: %63s %5s %127s %6u",
305 ifname,
306 afstr,
307 addrstr,
308 &prefixlen))
309 continue;
310 /* IPv4 */
311 if ((0 == strcasecmp ("inet",
312 afstr)) &&
313 (1 == inet_pton (AF_INET,
314 addrstr,
315 &v4)))
316 {
317 memset (&a4, 0, sizeof(a4));
318 a4.sin_family = AF_INET;
319#if HAVE_SOCKADDR_IN_SIN_LEN
320 a4.sin_len = (u_char) sizeof(struct sockaddr_in);
321#endif
322 a4.sin_addr = v4;
323
324 memset (&v4.s_addr, 0, sizeof(v4.s_addr));
325 for (i = 0; i < prefixlen; i++)
326 v4.s_addr |= 1 << (i & 7);
327 memset (&netmask, 0, sizeof(netmask));
328 netmask.sin_family = AF_INET;
329#if HAVE_SOCKADDR_IN_SIN_LEN
330 netmask.sin_len = (u_char) sizeof(struct sockaddr_in);
331#endif
332 netmask.sin_addr = v4;
333
334 if (GNUNET_OK !=
335 proc (proc_cls,
336 ifname,
337 (0 == strcmp (ifname,
338 GNUNET_DEFAULT_INTERFACE)),
339 (const struct sockaddr *) &a4,
340 NULL,
341 (const struct sockaddr *) &netmask,
342 sizeof(a4)))
343 break;
344 }
345 /* IPv6 */
346 if ((0 == strcasecmp ("inet6",
347 afstr)) &&
348 (1 == inet_pton (AF_INET6,
349 addrstr,
350 &v6)))
351 {
352 memset (&a6, 0, sizeof(a6));
353 a6.sin6_family = AF_INET6;
354#if HAVE_SOCKADDR_IN_SIN_LEN
355 a6.sin6_len = (u_char) sizeof(struct sockaddr_in6);
356#endif
357 a6.sin6_addr = v6;
358
359 memset (v6.s6_addr, 0, sizeof(v6.s6_addr));
360 for (i = 0; i < prefixlen; i++)
361 v6.s6_addr[i >> 3] |= 1 << (i & 7);
362 memset (&netmask6, 0, sizeof(netmask6));
363 netmask6.sin6_family = AF_INET6;
364#if HAVE_SOCKADDR_IN_SIN_LEN
365 netmask6.sin6_len = (u_char) sizeof(struct sockaddr_in6);
366#endif
367 netmask6.sin6_addr = v6;
368
369 if (GNUNET_OK !=
370 proc (proc_cls,
371 ifname,
372 (0 == strcmp (ifname,
373 GNUNET_DEFAULT_INTERFACE)),
374 (const struct sockaddr *) &a6,
375 NULL,
376 (const struct sockaddr *) &netmask6,
377 sizeof(a6)))
378 break;
379 }
380 }
381 pclose (f);
382 return GNUNET_OK;
383}
384
385
386#endif
387
388
389/**
390 * @brief Enumerate all network interfaces
391 *
392 * @param proc the callback function
393 * @param proc_cls closure for @a proc
394 */
395void
396GNUNET_OS_network_interfaces_list (GNUNET_OS_NetworkInterfaceProcessor proc,
397 void *proc_cls)
398{
399#if HAVE_GETIFADDRS && HAVE_FREEIFADDRS
400 struct ifaddrs *ifa_first;
401 struct ifaddrs *ifa_ptr;
402 socklen_t alen;
403
404 if (getifaddrs (&ifa_first) == 0)
405 {
406 for (ifa_ptr = ifa_first; ifa_ptr != NULL; ifa_ptr = ifa_ptr->ifa_next)
407 {
408 if ((ifa_ptr->ifa_name != NULL) && (ifa_ptr->ifa_addr != NULL) &&
409 ( (ifa_ptr->ifa_flags & IFF_UP) != 0) )
410 {
411 if ((ifa_ptr->ifa_addr->sa_family != AF_INET) &&
412 (ifa_ptr->ifa_addr->sa_family != AF_INET6))
413 continue;
414 if (ifa_ptr->ifa_addr->sa_family == AF_INET)
415 alen = sizeof(struct sockaddr_in);
416 else
417 alen = sizeof(struct sockaddr_in6);
418 if (GNUNET_OK !=
419 proc (proc_cls, ifa_ptr->ifa_name,
420 (0 == strcmp (ifa_ptr->ifa_name, GNUNET_DEFAULT_INTERFACE)),
421 ifa_ptr->ifa_addr, ifa_ptr->ifa_broadaddr,
422 ifa_ptr->ifa_netmask, alen))
423 break;
424 }
425 }
426 freeifaddrs (ifa_first);
427 }
428#else
429 if (GNUNET_OK ==
430 try_ip (proc,
431 proc_cls))
432 return;
433 if (GNUNET_OK ==
434 try_ifconfig (proc,
435 proc_cls))
436 return;
437 LOG (GNUNET_ERROR_TYPE_WARNING | GNUNET_ERROR_TYPE_BULK,
438 "Failed to enumerate network interfaces\n");
439#endif
440}
441
442
443/* end of os_network.c */
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-19 04:25:18 +0000