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 * 4. Neither the name of the University nor the names of its contributors 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. 28 */ 29 30 #if defined(LIBC_SCCS) && !defined(lint) 31 static char sccsid[] = "@(#)getprotoname.c 8.1 (Berkeley) 6/4/93"; 32 #endif /* LIBC_SCCS and not lint */ 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD$"); 35 36 #include <netdb.h> 37 #include <nsswitch.h> 38 #include <string.h> 39 #include "netdb_private.h" 40 #ifdef NS_CACHING 41 #include "nscache.h" 42 #endif 43 #include "nss_tls.h" 44 45 static const ns_src defaultsrc[] = { 46 { NSSRC_FILES, NS_SUCCESS }, 47 { NULL, 0 } 48 }; 49 50 #ifdef NS_CACHING 51 extern int __proto_id_func(char *, size_t *, va_list, void *); 52 extern int __proto_marshal_func(char *, size_t *, void *, va_list, void *); 53 extern int __proto_unmarshal_func(char *, size_t, void *, va_list, void *); 54 #endif 55 56 static int 57 files_getprotobyname(void *retval, void *mdata, va_list ap) 58 { 59 struct protoent pe; 60 struct protoent_data *ped; 61 char **cp; 62 int error; 63 64 char *name; 65 struct protoent *pptr; 66 char *buffer; 67 size_t buflen; 68 int *errnop; 69 70 name = va_arg(ap, char *); 71 pptr = va_arg(ap, struct protoent *); 72 buffer = va_arg(ap, char *); 73 buflen = va_arg(ap, size_t); 74 errnop = va_arg(ap, int *); 75 76 77 if ((ped = __protoent_data_init()) == NULL) { 78 *errnop = -1; 79 return (NS_NOTFOUND); 80 } 81 82 __setprotoent_p(ped->stayopen, ped); 83 while ((error = __getprotoent_p(&pe, ped)) == 0) { 84 if (strcmp(pe.p_name, name) == 0) 85 break; 86 for (cp = pe.p_aliases; *cp != 0; cp++) 87 if (strcmp(*cp, name) == 0) 88 goto found; 89 } 90 found: 91 if (!ped->stayopen) 92 __endprotoent_p(ped); 93 if (error != 0) { 94 *errnop = -1; 95 return (NS_NOTFOUND); 96 } 97 if (__copy_protoent(&pe, pptr, buffer, buflen) != 0) { 98 *errnop = -1; 99 return (NS_NOTFOUND); 100 } 101 102 *((struct protoent **)retval) = pptr; 103 return (NS_SUCCESS); 104 } 105 106 107 int 108 getprotobyname_r(const char *name, struct protoent *pptr, char *buffer, 109 size_t buflen, struct protoent **result) 110 { 111 #ifdef NS_CACHING 112 static const nss_cache_info cache_info = 113 NS_COMMON_CACHE_INFO_INITIALIZER( 114 protocols, (void *)nss_lt_name, 115 __proto_id_func, __proto_marshal_func, __proto_unmarshal_func); 116 #endif 117 static const ns_dtab dtab[] = { 118 { NSSRC_FILES, files_getprotobyname, NULL }, 119 #ifdef NS_CACHING 120 NS_CACHE_CB(&cache_info) 121 #endif 122 { NULL, NULL, NULL } 123 }; 124 int rv, ret_errno; 125 126 ret_errno = 0; 127 *result = NULL; 128 rv = nsdispatch(result, dtab, NSDB_PROTOCOLS, "getprotobyname_r", 129 defaultsrc, name, pptr, buffer, buflen, &ret_errno); 130 131 if (rv == NS_SUCCESS) 132 return (0); 133 else 134 return (ret_errno); 135 } 136 137 struct protoent * 138 getprotobyname(const char *name) 139 { 140 struct protodata *pd; 141 struct protoent *rval; 142 143 if ((pd = __protodata_init()) == NULL) 144 return (NULL); 145 if (getprotobyname_r(name, &pd->proto, pd->data, sizeof(pd->data), 146 &rval) != 0) 147 return (NULL); 148 return (rval); 149 } 150