Annotation of embedaddon/sudo/plugins/sudoers/interfaces.c, revision 1.1.1.2
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;
1.1.1.2 ! misho 64: debug_decl(set_interfaces, SUDO_DEBUG_NETIF)
1.1 misho 65:
66: addrinfo = estrdup(ai);
67: for (addr = strtok(addrinfo, " \t"); addr != NULL; addr = strtok(NULL, " \t")) {
68: /* Separate addr and mask. */
69: if ((mask = strchr(addr, '/')) == NULL)
70: continue;
71: *mask++ = '\0';
72:
73: /* Parse addr and store in list. */
1.1.1.2 ! misho 74: ifp = ecalloc(1, sizeof(*ifp));
1.1 misho 75: if (strchr(addr, ':')) {
76: /* IPv6 */
1.1.1.2 ! misho 77: #ifdef HAVE_STRUCT_IN6_ADDR
1.1 misho 78: ifp->family = AF_INET6;
79: if (inet_pton(AF_INET6, addr, &ifp->addr.ip6) != 1 ||
80: inet_pton(AF_INET6, mask, &ifp->netmask.ip6) != 1)
81: #endif
82: {
83: efree(ifp);
84: continue;
85: }
86: } else {
87: /* IPv4 */
88: ifp->family = AF_INET;
89: ifp->addr.ip4.s_addr = inet_addr(addr);
90: ifp->netmask.ip4.s_addr = inet_addr(mask);
91: if (ifp->addr.ip4.s_addr == INADDR_NONE ||
92: ifp->netmask.ip4.s_addr == INADDR_NONE) {
93: efree(ifp);
94: continue;
95: }
96: }
97: ifp->next = interfaces;
98: interfaces = ifp;
99: }
100: efree(addrinfo);
1.1.1.2 ! misho 101: debug_return;
1.1 misho 102: }
103:
104: void
105: dump_interfaces(const char *ai)
106: {
107: char *cp, *addrinfo;
1.1.1.2 ! misho 108: debug_decl(set_interfaces, SUDO_DEBUG_NETIF)
1.1 misho 109:
110: addrinfo = estrdup(ai);
111:
112: sudo_printf(SUDO_CONV_INFO_MSG, _("Local IP address and netmask pairs:\n"));
113: for (cp = strtok(addrinfo, " \t"); cp != NULL; cp = strtok(NULL, " \t"))
114: sudo_printf(SUDO_CONV_INFO_MSG, "\t%s\n", cp);
115:
116: efree(addrinfo);
1.1.1.2 ! misho 117: debug_return;
1.1 misho 118: }
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