1 /* 2 * Copyright 1997-2002 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 6 /* 7 * Copyright (c) 1996,1999 by Internet Software Consortium. 8 * 9 * Permission to use, copy, modify, and distribute this software for any 10 * purpose with or without fee is hereby granted, provided that the above 11 * copyright notice and this permission notice appear in all copies. 12 * 13 * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS 14 * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES 15 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE 16 * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 17 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 18 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS 19 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS 20 * SOFTWARE. 21 */ 22 23 #pragma ident "%Z%%M% %I% %E% SMI" 24 25 #if !defined(LINT) && !defined(CODECENTER) 26 static const char rcsid[] = "$Id: getprotoent.c,v 1.16 2001/11/01 07:34:33 marka Exp $"; 27 #endif 28 29 /* Imports */ 30 31 #include "port_before.h" 32 33 #if !defined(__BIND_NOSTATIC) 34 35 #include <sys/types.h> 36 37 #include <netinet/in.h> 38 #include <arpa/nameser.h> 39 40 #include <errno.h> 41 #include <resolv.h> 42 #include <stdio.h> 43 #include <string.h> 44 45 #include <irs.h> 46 47 #include "port_after.h" 48 49 #include "irs_data.h" 50 51 /* Forward */ 52 53 static struct net_data *init(void); 54 55 /* Public */ 56 57 struct protoent * 58 getprotoent() { 59 struct net_data *net_data = init(); 60 61 return (getprotoent_p(net_data)); 62 } 63 64 struct protoent * 65 getprotobyname(const char *name) { 66 struct net_data *net_data = init(); 67 68 return (getprotobyname_p(name, net_data)); 69 } 70 71 struct protoent * 72 getprotobynumber(int proto) { 73 struct net_data *net_data = init(); 74 75 return (getprotobynumber_p(proto, net_data)); 76 } 77 78 #ifdef ORIGINAL_ISC_CODE 79 void 80 #else 81 int 82 #endif 83 setprotoent(int stayopen) { 84 struct net_data *net_data = init(); 85 86 setprotoent_p(stayopen, net_data); 87 #ifdef ORIGINAL_ISC_CODE 88 #else 89 return (0); 90 #endif 91 } 92 93 #ifdef ORIGINAL_ISC_CODE 94 void 95 #else 96 int 97 #endif 98 endprotoent() { 99 struct net_data *net_data = init(); 100 101 endprotoent_p(net_data); 102 #ifdef ORIGINAL_ISC_CODE 103 #else 104 return (0); 105 #endif 106 } 107 108 /* Shared private. */ 109 110 struct protoent * 111 getprotoent_p(struct net_data *net_data) { 112 struct irs_pr *pr; 113 114 if (!net_data || !(pr = net_data->pr)) 115 return (NULL); 116 net_data->pr_last = (*pr->next)(pr); 117 return (net_data->pr_last); 118 } 119 120 struct protoent * 121 getprotobyname_p(const char *name, struct net_data *net_data) { 122 struct irs_pr *pr; 123 char **pap; 124 125 if (!net_data || !(pr = net_data->pr)) 126 return (NULL); 127 if (net_data->pr_stayopen && net_data->pr_last) { 128 if (!strcmp(net_data->pr_last->p_name, name)) 129 return (net_data->pr_last); 130 for (pap = net_data->pr_last->p_aliases; pap && *pap; pap++) 131 if (!strcmp(name, *pap)) 132 return (net_data->pr_last); 133 } 134 net_data->pr_last = (*pr->byname)(pr, name); 135 if (!net_data->pr_stayopen) 136 endprotoent(); 137 return (net_data->pr_last); 138 } 139 140 struct protoent * 141 getprotobynumber_p(int proto, struct net_data *net_data) { 142 struct irs_pr *pr; 143 144 if (!net_data || !(pr = net_data->pr)) 145 return (NULL); 146 if (net_data->pr_stayopen && net_data->pr_last) 147 if (net_data->pr_last->p_proto == proto) 148 return (net_data->pr_last); 149 net_data->pr_last = (*pr->bynumber)(pr, proto); 150 if (!net_data->pr_stayopen) 151 endprotoent(); 152 return (net_data->pr_last); 153 } 154 155 void 156 setprotoent_p(int stayopen, struct net_data *net_data) { 157 struct irs_pr *pr; 158 159 if (!net_data || !(pr = net_data->pr)) 160 return; 161 (*pr->rewind)(pr); 162 net_data->pr_stayopen = (stayopen != 0); 163 if (stayopen == 0) 164 net_data_minimize(net_data); 165 } 166 167 void 168 endprotoent_p(struct net_data *net_data) { 169 struct irs_pr *pr; 170 171 if ((net_data != NULL) && ((pr = net_data->pr) != NULL)) 172 (*pr->minimize)(pr); 173 } 174 175 /* Private */ 176 177 static struct net_data * 178 init() { 179 struct net_data *net_data; 180 181 if (!(net_data = net_data_init(NULL))) 182 goto error; 183 if (!net_data->pr) { 184 net_data->pr = (*net_data->irs->pr_map)(net_data->irs); 185 186 if (!net_data->pr || !net_data->res) { 187 error: 188 errno = EIO; 189 return (NULL); 190 } 191 (*net_data->pr->res_set)(net_data->pr, net_data->res, NULL); 192 } 193 194 return (net_data); 195 } 196 197 #endif /*__BIND_NOSTATIC*/ 198