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f7ddf3d3 | 1 | /* Copyright (C) 1996, 1999, 2002 Free Software Foundation, Inc. |
afd4eb37 UD |
2 | This file is part of the GNU C Library. |
3 | Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. | |
6dbe2837 | 4 | |
afd4eb37 | 5 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
6dbe2837 | 9 | |
afd4eb37 UD |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
6dbe2837 | 14 | |
41bdb6e2 AJ |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, write to the Free | |
17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
18 | 02111-1307 USA. */ | |
6dbe2837 | 19 | |
2f638d5e | 20 | #include <errno.h> |
6dbe2837 RM |
21 | #include <netinet/ether.h> |
22 | #include <netinet/if_ether.h> | |
84384f5b | 23 | #include <string.h> |
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24 | |
25 | #include "../nss/nsswitch.h" | |
26 | ||
6dbe2837 | 27 | /* Type of the lookup function we need here. */ |
2f638d5e UD |
28 | typedef int (*lookup_function) (const char *, struct etherent *, char *, int, |
29 | int *); | |
6dbe2837 | 30 | |
afd4eb37 UD |
31 | /* The lookup function for the first entry of this service. */ |
32 | extern int __nss_ethers_lookup (service_user **nip, const char *name, | |
f7ddf3d3 | 33 | void **fctp) internal_function; |
afd4eb37 | 34 | |
6dbe2837 RM |
35 | |
36 | int | |
37 | ether_hostton (const char *hostname, struct ether_addr *addr) | |
38 | { | |
390500b1 | 39 | static service_user *startp; |
6dbe2837 RM |
40 | static lookup_function start_fct; |
41 | service_user *nip; | |
42 | lookup_function fct; | |
43 | int no_more; | |
6dbe2837 RM |
44 | enum nss_status status = NSS_STATUS_UNAVAIL; |
45 | struct etherent etherent; | |
46 | ||
47 | if (startp == NULL) | |
48 | { | |
49 | no_more = __nss_ethers_lookup (&nip, "gethostton_r", (void **) &fct); | |
50 | if (no_more) | |
51 | startp = (service_user *) -1; | |
52 | else | |
53 | { | |
54 | startp = nip; | |
55 | start_fct = fct; | |
56 | } | |
57 | } | |
58 | else | |
59 | { | |
60 | fct = start_fct; | |
61 | no_more = (nip = startp) == (service_user *) -1; | |
62 | } | |
63 | ||
64 | while (no_more == 0) | |
65 | { | |
66 | char buffer[1024]; | |
67 | ||
630b9a59 | 68 | status = (*fct) (hostname, ðerent, buffer, sizeof buffer, &errno); |
6dbe2837 RM |
69 | |
70 | no_more = __nss_next (&nip, "gethostton_r", (void **) &fct, status, 0); | |
71 | } | |
72 | ||
73 | if (status == NSS_STATUS_SUCCESS) | |
74 | memcpy (addr, etherent.e_addr.ether_addr_octet, | |
75 | sizeof (struct ether_addr)); | |
76 | ||
77 | return status == NSS_STATUS_SUCCESS ? 0 : -1; | |
78 | } |