Annotation of embedaddon/sudo/plugins/sudoers/interfaces.c, revision 1.1.1.1
1.1 misho 1: /*
2: * Copyright (c) 2010 Todd C. Miller <Todd.Miller@courtesan.com>
3: *
4: * Permission to use, copy, modify, and distribute this software for any
5: * purpose with or without fee is hereby granted, provided that the above
6: * copyright notice and this permission notice appear in all copies.
7: *
8: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15: */
16:
17: #include <config.h>
18:
19: #include <sys/types.h>
20: #include <sys/socket.h>
21: #include <sys/param.h>
22: #include <stdio.h>
23: #ifdef STDC_HEADERS
24: # include <stdlib.h>
25: # include <stddef.h>
26: #else
27: # ifdef HAVE_STDLIB_H
28: # include <stdlib.h>
29: # endif
30: #endif /* STDC_HEADERS */
31: #ifdef HAVE_STRING_H
32: # if defined(HAVE_MEMORY_H) && !defined(STDC_HEADERS)
33: # include <memory.h>
34: # endif
35: # include <string.h>
36: #endif /* HAVE_STRING_H */
37: #ifdef HAVE_STRINGS_H
38: # include <strings.h>
39: #endif /* HAVE_STRINGS_H */
40: #ifdef HAVE_UNISTD_H
41: # include <unistd.h>
42: #endif /* HAVE_UNISTD_H */
43: #include <netinet/in.h>
44: #include <arpa/inet.h>
45: #include <netdb.h>
46: #include <errno.h>
47:
48: #include "sudoers.h"
49: #include "interfaces.h"
50:
51: #ifndef INADDR_NONE
52: # define INADDR_NONE ((unsigned int)-1)
53: #endif
54:
55: /*
56: * Parse a space-delimited list of IP address/netmask pairs and
57: * store in a list of interface structures.
58: */
59: void
60: set_interfaces(const char *ai)
61: {
62: char *addrinfo, *addr, *mask;
63: struct interface *ifp;
64:
65: addrinfo = estrdup(ai);
66: for (addr = strtok(addrinfo, " \t"); addr != NULL; addr = strtok(NULL, " \t")) {
67: /* Separate addr and mask. */
68: if ((mask = strchr(addr, '/')) == NULL)
69: continue;
70: *mask++ = '\0';
71:
72: /* Parse addr and store in list. */
73: ifp = emalloc(sizeof(*ifp));
74: if (strchr(addr, ':')) {
75: /* IPv6 */
76: #ifdef HAVE_IN6_ADDR
77: ifp->family = AF_INET6;
78: if (inet_pton(AF_INET6, addr, &ifp->addr.ip6) != 1 ||
79: inet_pton(AF_INET6, mask, &ifp->netmask.ip6) != 1)
80: #endif
81: {
82: efree(ifp);
83: continue;
84: }
85: } else {
86: /* IPv4 */
87: ifp->family = AF_INET;
88: ifp->addr.ip4.s_addr = inet_addr(addr);
89: ifp->netmask.ip4.s_addr = inet_addr(mask);
90: if (ifp->addr.ip4.s_addr == INADDR_NONE ||
91: ifp->netmask.ip4.s_addr == INADDR_NONE) {
92: efree(ifp);
93: continue;
94: }
95: }
96: ifp->next = interfaces;
97: interfaces = ifp;
98: }
99: efree(addrinfo);
100: }
101:
102: void
103: dump_interfaces(const char *ai)
104: {
105: char *cp, *addrinfo;
106:
107: addrinfo = estrdup(ai);
108:
109: sudo_printf(SUDO_CONV_INFO_MSG, _("Local IP address and netmask pairs:\n"));
110: for (cp = strtok(addrinfo, " \t"); cp != NULL; cp = strtok(NULL, " \t"))
111: sudo_printf(SUDO_CONV_INFO_MSG, "\t%s\n", cp);
112:
113: efree(addrinfo);
114: }
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