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Diffstat (limited to 'src/util/os_network.c')
-rw-r--r-- | src/util/os_network.c | 286 |
1 files changed, 286 insertions, 0 deletions
diff --git a/src/util/os_network.c b/src/util/os_network.c new file mode 100644 index 000000000..cb5ccb12a --- /dev/null +++ b/src/util/os_network.c | |||
@@ -0,0 +1,286 @@ | |||
1 | /* | ||
2 | This file is part of GNUnet. | ||
3 | (C) 2004, 2005, 2006 Christian Grothoff (and other contributing authors) | ||
4 | |||
5 | GNUnet is free software; you can redistribute it and/or modify | ||
6 | it under the terms of the GNU General Public License as published | ||
7 | by the Free Software Foundation; either version 2, or (at your | ||
8 | 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 | General Public License for more details. | ||
14 | |||
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., 59 Temple Place - Suite 330, | ||
18 | Boston, MA 02111-1307, USA. | ||
19 | |||
20 | */ | ||
21 | |||
22 | /** | ||
23 | * @file util/os_network.c | ||
24 | * @brief function to determine available network interfaces | ||
25 | * @author Nils Durner | ||
26 | * @author Heikki Lindholm | ||
27 | * @author Jake Dust | ||
28 | */ | ||
29 | |||
30 | #include "platform.h" | ||
31 | #include "gnunet_common.h" | ||
32 | #include "gnunet_os_lib.h" | ||
33 | |||
34 | /** | ||
35 | * @brief Enumerate all network interfaces | ||
36 | * @param callback the callback function | ||
37 | */ | ||
38 | void | ||
39 | GNUNET_OS_network_interfaces_list (GNUNET_OS_NetworkInterfaceProcessor proc, | ||
40 | void *cls) | ||
41 | { | ||
42 | #ifdef MINGW | ||
43 | PMIB_IFTABLE pTable; | ||
44 | PMIB_IPADDRTABLE pAddrTable; | ||
45 | DWORD dwIfIdx, dwExternalNIC; | ||
46 | IPAddr theIP; | ||
47 | |||
48 | /* Determine our external NIC */ | ||
49 | theIP = inet_addr ("192.0.34.166"); /* www.example.com */ | ||
50 | if ((!GNGetBestInterface) || | ||
51 | (GNGetBestInterface (theIP, &dwExternalNIC) != NO_ERROR)) | ||
52 | { | ||
53 | dwExternalNIC = 0; | ||
54 | } | ||
55 | |||
56 | /* Enumerate NICs */ | ||
57 | EnumNICs (&pTable, &pAddrTable); | ||
58 | |||
59 | if (pTable) | ||
60 | { | ||
61 | for (dwIfIdx = 0; dwIfIdx <= pTable->dwNumEntries; dwIfIdx++) | ||
62 | { | ||
63 | char szEntry[1001]; | ||
64 | DWORD dwIP = 0; | ||
65 | int iItm; | ||
66 | PIP_ADAPTER_INFO pAdapterInfo; | ||
67 | PIP_ADAPTER_INFO pAdapter = NULL; | ||
68 | DWORD dwRetVal = 0; | ||
69 | |||
70 | /* Get IP-Address */ | ||
71 | int i; | ||
72 | for (i = 0; i < pAddrTable->dwNumEntries; i++) | ||
73 | { | ||
74 | if (pAddrTable->table[i].dwIndex == | ||
75 | pTable->table[dwIfIdx].dwIndex) | ||
76 | { | ||
77 | dwIP = pAddrTable->table[i].dwAddr; | ||
78 | break; | ||
79 | } | ||
80 | } | ||
81 | |||
82 | if (dwIP) | ||
83 | { | ||
84 | BYTE bPhysAddr[MAXLEN_PHYSADDR]; | ||
85 | char *pszIfName = NULL; | ||
86 | char dst[INET_ADDRSTRLEN]; | ||
87 | |||
88 | /* Get friendly interface name */ | ||
89 | pAdapterInfo = | ||
90 | (IP_ADAPTER_INFO *) malloc (sizeof (IP_ADAPTER_INFO)); | ||
91 | ULONG ulOutBufLen = sizeof (IP_ADAPTER_INFO); | ||
92 | |||
93 | /* Make an initial call to GetAdaptersInfo to get | ||
94 | the necessary size into the ulOutBufLen variable */ | ||
95 | if (GGetAdaptersInfo (pAdapterInfo, &ulOutBufLen) == | ||
96 | ERROR_BUFFER_OVERFLOW) | ||
97 | { | ||
98 | free (pAdapterInfo); | ||
99 | pAdapterInfo = (IP_ADAPTER_INFO *) malloc (ulOutBufLen); | ||
100 | } | ||
101 | |||
102 | if ((dwRetVal = | ||
103 | GGetAdaptersInfo (pAdapterInfo, &ulOutBufLen)) == NO_ERROR) | ||
104 | { | ||
105 | pAdapter = pAdapterInfo; | ||
106 | while (pAdapter) | ||
107 | { | ||
108 | if (pTable->table[dwIfIdx].dwIndex == pAdapter->Index) | ||
109 | { | ||
110 | char szKey[251]; | ||
111 | long lLen = 250; | ||
112 | |||
113 | sprintf (szKey, | ||
114 | "SYSTEM\\CurrentControlSet\\Control\\Network\\" | ||
115 | "{4D36E972-E325-11CE-BFC1-08002BE10318}\\%s\\Connection", | ||
116 | pAdapter->AdapterName); | ||
117 | pszIfName = (char *) malloc (251); | ||
118 | if (QueryRegistry | ||
119 | (HKEY_LOCAL_MACHINE, szKey, "Name", pszIfName, | ||
120 | &lLen) != ERROR_SUCCESS) | ||
121 | { | ||
122 | free (pszIfName); | ||
123 | pszIfName = NULL; | ||
124 | } | ||
125 | } | ||
126 | pAdapter = pAdapter->Next; | ||
127 | } | ||
128 | } | ||
129 | free (pAdapterInfo); | ||
130 | |||
131 | /* Set entry */ | ||
132 | memset (bPhysAddr, 0, MAXLEN_PHYSADDR); | ||
133 | memcpy (bPhysAddr, | ||
134 | pTable->table[dwIfIdx].bPhysAddr, | ||
135 | pTable->table[dwIfIdx].dwPhysAddrLen); | ||
136 | |||
137 | snprintf (szEntry, 1000, "%s (%s - %I64u)", | ||
138 | pszIfName ? pszIfName : (char *) pTable-> | ||
139 | table[dwIfIdx].bDescr, inet_ntop (AF_INET, &dwIP, dst, | ||
140 | INET_ADDRSTRLEN), | ||
141 | *((unsigned long long *) bPhysAddr)); | ||
142 | szEntry[1000] = 0; | ||
143 | |||
144 | if (pszIfName) | ||
145 | free (pszIfName); | ||
146 | |||
147 | if (GNUNET_OK != | ||
148 | proc (cls, | ||
149 | szEntry, | ||
150 | pAddrTable->table[dwIfIdx].dwIndex == dwExternalNIC, | ||
151 | NULL /* FIXME: pass actual IP address! */ , | ||
152 | 0)) | ||
153 | break; | ||
154 | } | ||
155 | } | ||
156 | GlobalFree (pAddrTable); | ||
157 | GlobalFree (pTable); | ||
158 | } | ||
159 | |||
160 | return GNUNET_YES; | ||
161 | |||
162 | #elif HAVE_GETIFADDRS && HAVE_FREEIFADDRS | ||
163 | |||
164 | struct ifaddrs *ifa_first; | ||
165 | socklen_t alen; | ||
166 | |||
167 | if (getifaddrs (&ifa_first) == 0) | ||
168 | { | ||
169 | struct ifaddrs *ifa_ptr; | ||
170 | |||
171 | ifa_ptr = ifa_first; | ||
172 | for (ifa_ptr = ifa_first; ifa_ptr != NULL; ifa_ptr = ifa_ptr->ifa_next) | ||
173 | { | ||
174 | if (ifa_ptr->ifa_name != NULL && | ||
175 | ifa_ptr->ifa_addr != NULL && (ifa_ptr->ifa_flags & IFF_UP) != 0) | ||
176 | { | ||
177 | if ((ifa_ptr->ifa_addr->sa_family != AF_INET) && | ||
178 | (ifa_ptr->ifa_addr->sa_family != AF_INET6)) | ||
179 | continue; | ||
180 | if (ifa_ptr->ifa_addr->sa_family == AF_INET) | ||
181 | alen = sizeof (struct sockaddr_in); | ||
182 | else | ||
183 | alen = sizeof (struct sockaddr_in6); | ||
184 | if (GNUNET_OK != proc (cls, | ||
185 | ifa_ptr->ifa_name, | ||
186 | 0 == strcmp (ifa_ptr->ifa_name, | ||
187 | GNUNET_DEFAULT_INTERFACE), | ||
188 | ifa_ptr->ifa_addr, alen)) | ||
189 | break; | ||
190 | } | ||
191 | } | ||
192 | freeifaddrs (ifa_first); | ||
193 | } | ||
194 | #else | ||
195 | char line[1024]; | ||
196 | const char *start; | ||
197 | char ifc[12]; | ||
198 | char addrstr[128]; | ||
199 | FILE *f; | ||
200 | int have_ifc; | ||
201 | struct sockaddr_in a4; | ||
202 | struct sockaddr_in6 a6; | ||
203 | struct in_addr v4; | ||
204 | struct in6_addr v6; | ||
205 | |||
206 | if (system ("ifconfig -a > /dev/null 2> /dev/null")) | ||
207 | if (system ("/sbin/ifconfig -a > /dev/null 2> /dev/null") == 0) | ||
208 | f = popen ("/sbin/ifconfig -a 2> /dev/null", "r"); | ||
209 | else | ||
210 | f = NULL; | ||
211 | else | ||
212 | f = popen ("ifconfig -a 2> /dev/null", "r"); | ||
213 | if (!f) | ||
214 | { | ||
215 | GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING | | ||
216 | GNUNET_ERROR_TYPE_BULK, "popen", "ifconfig"); | ||
217 | return; | ||
218 | } | ||
219 | |||
220 | have_ifc = GNUNET_NO; | ||
221 | ifc[11] = '\0'; | ||
222 | while (NULL != fgets (line, sizeof (line), f)) | ||
223 | { | ||
224 | if (strlen (line) == 0) | ||
225 | { | ||
226 | have_ifc = GNUNET_NO; | ||
227 | continue; | ||
228 | } | ||
229 | if (!isspace (line[0])) | ||
230 | { | ||
231 | have_ifc = | ||
232 | (1 == SSCANF (line, "%11s", ifc)) ? GNUNET_YES : GNUNET_NO; | ||
233 | /* would end with ':' on OSX, fix it! */ | ||
234 | if (ifc[strlen (ifc) - 1] == ':') | ||
235 | ifc[strlen (ifc) - 1] = '\0'; | ||
236 | continue; | ||
237 | } | ||
238 | if (!have_ifc) | ||
239 | continue; /* strange input, hope for the best */ | ||
240 | start = line; | ||
241 | while (('\0' != *start) && (isspace (*start))) | ||
242 | start++; | ||
243 | if ( /* Linux */ | ||
244 | (1 == SSCANF (start, "inet addr:%127s", addrstr)) || | ||
245 | (1 == SSCANF (start, "inet6 addr:%127s", addrstr)) || | ||
246 | /* Solaris, OS X */ | ||
247 | (1 == SSCANF (start, "inet %127s", addrstr)) || | ||
248 | (1 == SSCANF (start, "inet6 %127s", addrstr))) | ||
249 | { | ||
250 | /* IPv4 */ | ||
251 | if (1 == inet_pton (AF_INET, addrstr, &v4)) | ||
252 | { | ||
253 | memset (&a4, 0, sizeof (a4)); | ||
254 | a4.sin_family = AF_INET; | ||
255 | a4.sin_addr = v4; | ||
256 | if (GNUNET_OK != | ||
257 | proc (cls, | ||
258 | ifc, | ||
259 | 0 == strcmp (ifc, GNUNET_DEFAULT_INTERFACE), | ||
260 | (const struct sockaddr *) &a4, sizeof (a4))) | ||
261 | break; | ||
262 | continue; | ||
263 | } | ||
264 | /* IPv6 */ | ||
265 | if (1 == inet_pton (AF_INET6, addrstr, &v6)) | ||
266 | { | ||
267 | memset (&a6, 0, sizeof (a6)); | ||
268 | a6.sin6_family = AF_INET6; | ||
269 | a6.sin6_addr = v6; | ||
270 | fprintf (stderr, "procing %s\n", addrstr); | ||
271 | if (GNUNET_OK != | ||
272 | proc (cls, | ||
273 | ifc, | ||
274 | 0 == strcmp (ifc, GNUNET_DEFAULT_INTERFACE), | ||
275 | (const struct sockaddr *) &a6, sizeof (a6))) | ||
276 | break; | ||
277 | continue; | ||
278 | } | ||
279 | } | ||
280 | } | ||
281 | pclose (f); | ||
282 | #endif | ||
283 | } | ||
284 | |||
285 | |||
286 | /* end of os_network.c */ | ||