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984263bc MD |
1 | /* |
2 | * Copyright (c) 1983, 1993 | |
3 | * The Regents of the University of California. All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
9917f064 | 13 | * 3. Neither the name of the University nor the names of its contributors |
984263bc MD |
14 | * may be used to endorse or promote products derived from this software |
15 | * without specific prior written permission. | |
16 | * | |
17 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
27 | * SUCH DAMAGE. | |
1de703da MD |
28 | * |
29 | * @(#)getproto.c 8.1 (Berkeley) 6/4/93 | |
ed5d5720 | 30 | * $FreeBSD: src/lib/libc/net/getproto.c,v 1.7 2007/01/09 00:28:02 imp Exp $ |
984263bc MD |
31 | */ |
32 | ||
984263bc | 33 | #include <netdb.h> |
ed5d5720 PA |
34 | #include <nsswitch.h> |
35 | #include "netdb_private.h" | |
36 | #ifdef NS_CACHING | |
37 | #include "nscache.h" | |
38 | #endif | |
39 | #include "nss_tls.h" | |
984263bc | 40 | |
ed5d5720 PA |
41 | static const ns_src defaultsrc[] = { |
42 | { NSSRC_FILES, NS_SUCCESS }, | |
43 | { NULL, 0 } | |
44 | }; | |
45 | ||
ed5d5720 | 46 | static int |
6d7019e6 | 47 | files_getprotobynumber(void *retval, void *mdata __unused, va_list ap) |
ed5d5720 PA |
48 | { |
49 | struct protoent pe; | |
50 | struct protoent_data *ped; | |
51 | int error; | |
52 | ||
53 | int number; | |
54 | struct protoent *pptr; | |
55 | char *buffer; | |
56 | size_t buflen; | |
57 | int *errnop; | |
58 | ||
59 | number = va_arg(ap, int); | |
60 | pptr = va_arg(ap, struct protoent *); | |
61 | buffer = va_arg(ap, char *); | |
62 | buflen = va_arg(ap, size_t); | |
63 | errnop = va_arg(ap, int *); | |
64 | ||
65 | if ((ped = __protoent_data_init()) == NULL) { | |
66 | *errnop = -1; | |
67 | return (NS_NOTFOUND); | |
68 | } | |
69 | ||
70 | __setprotoent_p(ped->stayopen, ped); | |
71 | while ((error = __getprotoent_p(&pe, ped)) == 0) | |
72 | if (pe.p_proto == number) | |
73 | break; | |
74 | if (!ped->stayopen) | |
75 | __endprotoent_p(ped); | |
76 | if (error != 0) { | |
77 | *errnop = -1; | |
78 | return (NS_NOTFOUND); | |
79 | } | |
80 | if (__copy_protoent(&pe, pptr, buffer, buflen) != 0) { | |
81 | *errnop = -1; | |
82 | return (NS_NOTFOUND); | |
83 | } | |
84 | ||
85 | *((struct protoent **)retval) = pptr; | |
86 | return (NS_SUCCESS); | |
87 | } | |
88 | ||
89 | int | |
90 | getprotobynumber_r(int proto, struct protoent *pptr, char *buffer, | |
91 | size_t buflen, struct protoent **result) | |
92 | { | |
93 | #ifdef NS_CACHING | |
94 | static const nss_cache_info cache_info = | |
95 | NS_COMMON_CACHE_INFO_INITIALIZER( | |
96 | protocols, (void *)nss_lt_id, | |
97 | __proto_id_func, __proto_marshal_func, __proto_unmarshal_func); | |
98 | #endif | |
99 | ||
100 | static const ns_dtab dtab[] = { | |
101 | { NSSRC_FILES, files_getprotobynumber, NULL }, | |
102 | #ifdef NS_CACHING | |
103 | NS_CACHE_CB(&cache_info) | |
104 | #endif | |
105 | { NULL, NULL, NULL } | |
106 | }; | |
107 | int rv, ret_errno; | |
108 | ||
109 | ret_errno = 0; | |
110 | *result = NULL; | |
111 | rv = nsdispatch(result, dtab, NSDB_PROTOCOLS, "getprotobynumber_r", | |
112 | defaultsrc, proto, pptr, buffer, buflen, &ret_errno); | |
113 | ||
114 | if (rv == NS_SUCCESS) | |
115 | return (0); | |
116 | else | |
117 | return (ret_errno); | |
118 | } | |
984263bc MD |
119 | |
120 | struct protoent * | |
076e5234 | 121 | getprotobynumber(int proto) |
984263bc | 122 | { |
ed5d5720 PA |
123 | struct protodata *pd; |
124 | struct protoent *rval; | |
984263bc | 125 | |
ed5d5720 PA |
126 | if ((pd = __protodata_init()) == NULL) |
127 | return (NULL); | |
128 | if (getprotobynumber_r(proto, &pd->proto, pd->data, sizeof(pd->data), | |
129 | &rval) != 0) | |
130 | return (NULL); | |
131 | return (rval); | |
984263bc | 132 | } |