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. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #if defined(LIBC_SCCS) && !defined(lint) 35 static char sccsid[] = "@(#)getprotoname.c 8.1 (Berkeley) 6/4/93"; 36 #endif /* LIBC_SCCS and not lint */ 37 #include <sys/cdefs.h> 38 __FBSDID("$FreeBSD$"); 39 40 #include <netdb.h> 41 #include <nsswitch.h> 42 #include <string.h> 43 #include "netdb_private.h" 44 #ifdef NS_CACHING 45 #include "nscache.h" 46 #endif 47 #include "nss_tls.h" 48 49 static const ns_src defaultsrc[] = { 50 { NSSRC_FILES, NS_SUCCESS }, 51 { NULL, 0 } 52 }; 53 54 #ifdef NS_CACHING 55 extern int __proto_id_func(char *, size_t *, va_list, void *); 56 extern int __proto_marshal_func(char *, size_t *, void *, va_list, void *); 57 extern int __proto_unmarshal_func(char *, size_t, void *, va_list, void *); 58 #endif 59 60 static int 61 files_getprotobyname(void *retval, void *mdata, va_list ap) 62 { 63 struct protoent pe; 64 struct protoent_data *ped; 65 char **cp; 66 int error; 67 68 char *name; 69 struct protoent *pptr; 70 char *buffer; 71 size_t buflen; 72 int *errnop; 73 74 name = va_arg(ap, char *); 75 pptr = va_arg(ap, struct protoent *); 76 buffer = va_arg(ap, char *); 77 buflen = va_arg(ap, size_t); 78 errnop = va_arg(ap, int *); 79 80 81 if ((ped = __protoent_data_init()) == NULL) { 82 *errnop = -1; 83 return (NS_NOTFOUND); 84 } 85 86 __setprotoent_p(ped->stayopen, ped); 87 while ((error = __getprotoent_p(&pe, ped)) == 0) { 88 if (strcmp(pe.p_name, name) == 0) 89 break; 90 for (cp = pe.p_aliases; *cp != 0; cp++) 91 if (strcmp(*cp, name) == 0) 92 goto found; 93 } 94 found: 95 if (!ped->stayopen) 96 __endprotoent_p(ped); 97 if (error != 0) { 98 *errnop = -1; 99 return (NS_NOTFOUND); 100 } 101 if (__copy_protoent(&pe, pptr, buffer, buflen) != 0) { 102 *errnop = -1; 103 return (NS_NOTFOUND); 104 } 105 106 *((struct protoent **)retval) = pptr; 107 return (NS_SUCCESS); 108 } 109 110 111 int 112 getprotobyname_r(const char *name, struct protoent *pptr, char *buffer, 113 size_t buflen, struct protoent **result) 114 { 115 #ifdef NS_CACHING 116 static const nss_cache_info cache_info = 117 NS_COMMON_CACHE_INFO_INITIALIZER( 118 protocols, (void *)nss_lt_name, 119 __proto_id_func, __proto_marshal_func, __proto_unmarshal_func); 120 #endif 121 static const ns_dtab dtab[] = { 122 { NSSRC_FILES, files_getprotobyname, NULL }, 123 #ifdef NS_CACHING 124 NS_CACHE_CB(&cache_info) 125 #endif 126 { NULL, NULL, NULL } 127 }; 128 int rv, ret_errno; 129 130 ret_errno = 0; 131 *result = NULL; 132 rv = nsdispatch(result, dtab, NSDB_PROTOCOLS, "getprotobyname_r", 133 defaultsrc, name, pptr, buffer, buflen, &ret_errno); 134 135 if (rv == NS_SUCCESS) 136 return (0); 137 else 138 return (ret_errno); 139 } 140 141 struct protoent * 142 getprotobyname(const char *name) 143 { 144 struct protodata *pd; 145 struct protoent *rval; 146 147 if ((pd = __protodata_init()) == NULL) 148 return (NULL); 149 if (getprotobyname_r(name, &pd->proto, pd->data, sizeof(pd->data), 150 &rval) != 0) 151 return (NULL); 152 return (rval); 153 } 154