1 /* 2 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") 3 * Copyright (c) 1996,1999 by Internet Software Consortium. 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT 15 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 /* Imports */ 19 20 #include "port_before.h" 21 22 #if !defined(__BIND_NOSTATIC) 23 24 #include <sys/types.h> 25 26 #include <netinet/in.h> 27 #include <arpa/nameser.h> 28 29 #include <errno.h> 30 #include <resolv.h> 31 #include <stdio.h> 32 #include <string.h> 33 34 #include <irs.h> 35 36 #include "port_after.h" 37 38 #include "irs_data.h" 39 40 /* Forward */ 41 42 static struct net_data *init(void); 43 44 /* Public */ 45 46 struct protoent * 47 getprotoent() { 48 struct net_data *net_data = init(); 49 50 return (getprotoent_p(net_data)); 51 } 52 53 struct protoent * 54 getprotobyname(const char *name) { 55 struct net_data *net_data = init(); 56 57 return (getprotobyname_p(name, net_data)); 58 } 59 60 struct protoent * 61 getprotobynumber(int proto) { 62 struct net_data *net_data = init(); 63 64 return (getprotobynumber_p(proto, net_data)); 65 } 66 67 void 68 setprotoent(int stayopen) { 69 struct net_data *net_data = init(); 70 71 setprotoent_p(stayopen, net_data); 72 } 73 74 void 75 endprotoent() { 76 struct net_data *net_data = init(); 77 78 endprotoent_p(net_data); 79 } 80 81 /* Shared private. */ 82 83 struct protoent * 84 getprotoent_p(struct net_data *net_data) { 85 struct irs_pr *pr; 86 87 if (!net_data || !(pr = net_data->pr)) 88 return (NULL); 89 net_data->pr_last = (*pr->next)(pr); 90 return (net_data->pr_last); 91 } 92 93 struct protoent * 94 getprotobyname_p(const char *name, struct net_data *net_data) { 95 struct irs_pr *pr; 96 char **pap; 97 98 if (!net_data || !(pr = net_data->pr)) 99 return (NULL); 100 if (net_data->pr_stayopen && net_data->pr_last) { 101 if (!strcmp(net_data->pr_last->p_name, name)) 102 return (net_data->pr_last); 103 for (pap = net_data->pr_last->p_aliases; pap && *pap; pap++) 104 if (!strcmp(name, *pap)) 105 return (net_data->pr_last); 106 } 107 net_data->pr_last = (*pr->byname)(pr, name); 108 if (!net_data->pr_stayopen) 109 endprotoent(); 110 return (net_data->pr_last); 111 } 112 113 struct protoent * 114 getprotobynumber_p(int proto, struct net_data *net_data) { 115 struct irs_pr *pr; 116 117 if (!net_data || !(pr = net_data->pr)) 118 return (NULL); 119 if (net_data->pr_stayopen && net_data->pr_last) 120 if (net_data->pr_last->p_proto == proto) 121 return (net_data->pr_last); 122 net_data->pr_last = (*pr->bynumber)(pr, proto); 123 if (!net_data->pr_stayopen) 124 endprotoent(); 125 return (net_data->pr_last); 126 } 127 128 void 129 setprotoent_p(int stayopen, struct net_data *net_data) { 130 struct irs_pr *pr; 131 132 if (!net_data || !(pr = net_data->pr)) 133 return; 134 (*pr->rewind)(pr); 135 net_data->pr_stayopen = (stayopen != 0); 136 if (stayopen == 0) 137 net_data_minimize(net_data); 138 } 139 140 void 141 endprotoent_p(struct net_data *net_data) { 142 struct irs_pr *pr; 143 144 if ((net_data != NULL) && ((pr = net_data->pr) != NULL)) 145 (*pr->minimize)(pr); 146 } 147 148 /* Private */ 149 150 static struct net_data * 151 init() { 152 struct net_data *net_data; 153 154 if (!(net_data = net_data_init(NULL))) 155 goto error; 156 if (!net_data->pr) { 157 net_data->pr = (*net_data->irs->pr_map)(net_data->irs); 158 159 if (!net_data->pr || !net_data->res) { 160 error: 161 errno = EIO; 162 return (NULL); 163 } 164 (*net_data->pr->res_set)(net_data->pr, net_data->res, NULL); 165 } 166 167 return (net_data); 168 } 169 170 #endif /*__BIND_NOSTATIC*/ 171 172 /*! \file */ 173