Deleted Added
sdiff udiff text old ( 52865 ) new ( 65532 )
full compact
getnetnamadr.c (52865) getnetnamadr.c (65532)
1/*-
2 * Copyright (c) 1994, Garrett Wollman
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.

--- 10 unchanged lines hidden (view full) ---

19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 */
25
26#if defined(LIBC_SCCS) && !defined(lint)
1/*-
2 * Copyright (c) 1994, Garrett Wollman
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.

--- 10 unchanged lines hidden (view full) ---

19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 */
25
26#if defined(LIBC_SCCS) && !defined(lint)
27static char rcsid[] = "$FreeBSD: head/lib/libc/net/getnetnamadr.c 52865 1999-11-04 05:01:28Z ache $";
27static char rcsid[] = "$FreeBSD: head/lib/libc/net/getnetnamadr.c 65532 2000-09-06 18:16:48Z nectar $";
28#endif /* LIBC_SCCS and not lint */
29
30#include <sys/param.h>
31#include <sys/socket.h>
32#include <netinet/in.h>
33#include <arpa/inet.h>
34#include <netdb.h>
35#include <stdio.h>
36#include <ctype.h>
37#include <errno.h>
38#include <string.h>
28#endif /* LIBC_SCCS and not lint */
29
30#include <sys/param.h>
31#include <sys/socket.h>
32#include <netinet/in.h>
33#include <arpa/inet.h>
34#include <netdb.h>
35#include <stdio.h>
36#include <ctype.h>
37#include <errno.h>
38#include <string.h>
39#include <stdarg.h>
40#include <nsswitch.h>
39
41
40#ifndef _PATH_NETCONF
41#define _PATH_NETCONF "/etc/host.conf"
42#endif
42extern int _ht_getnetbyname(void *, void *, va_list);
43extern int _dns_getnetbyname(void *, void *, va_list);
44extern int _nis_getnetbyname(void *, void *, va_list);
45extern int _ht_getnetbyaddr(void *, void *, va_list);
46extern int _dns_getnetbyaddr(void *, void *, va_list);
47extern int _nis_getnetbyaddr(void *, void *, va_list);
43
48
44enum service_type {
45 SERVICE_NONE = 0,
46 SERVICE_BIND,
47 SERVICE_TABLE,
48 SERVICE_NIS };
49#define SERVICE_MAX SERVICE_NIS
50
51static struct {
52 const char *name;
53 enum service_type type;
54} service_names[] = {
55 { "hosts", SERVICE_TABLE },
56 { "/etc/hosts", SERVICE_TABLE },
57 { "hosttable", SERVICE_TABLE },
58 { "htable", SERVICE_TABLE },
59 { "bind", SERVICE_BIND },
60 { "dns", SERVICE_BIND },
61 { "domain", SERVICE_BIND },
62 { "yp", SERVICE_NIS },
63 { "yellowpages", SERVICE_NIS },
64 { "nis", SERVICE_NIS },
65 { 0, SERVICE_NONE }
49/* Network lookup order if nsswitch.conf is broken or nonexistant */
50static const ns_src default_src[] = {
51 { NSSRC_FILES, NS_SUCCESS },
52 { NSSRC_DNS, NS_SUCCESS },
53 { 0 }
66};
67
54};
55
68static enum service_type service_order[SERVICE_MAX + 1];
69static int service_done = 0;
70
71static enum service_type
72get_service_name(const char *name) {
73 int i;
74 for(i = 0; service_names[i].type != SERVICE_NONE; i++) {
75 if(!strcasecmp(name, service_names[i].name)) {
76 return service_names[i].type;
77 }
78 }
79 return SERVICE_NONE;
80}
81
82static void
83init_services()
84{
85 char *cp, *p, buf[BUFSIZ];
86 register int cc = 0;
87 FILE *fd;
88
89 if ((fd = (FILE *)fopen(_PATH_NETCONF, "r")) == NULL) {
90 /* make some assumptions */
91 service_order[0] = SERVICE_TABLE;
92 service_order[1] = SERVICE_NONE;
93 } else {
94 while (fgets(buf, BUFSIZ, fd) != NULL && cc < SERVICE_MAX) {
95 if(buf[0] == '#')
96 continue;
97
98 p = buf;
99 while ((cp = strsep(&p, "\n \t,:;")) != NULL && *cp == '\0')
100 ;
101 if (cp == NULL)
102 continue;
103 do {
104 if (isalpha((unsigned char)cp[0])) {
105 service_order[cc] = get_service_name(cp);
106 if(service_order[cc] != SERVICE_NONE)
107 cc++;
108 }
109 while ((cp = strsep(&p, "\n \t,:;")) != NULL && *cp == '\0')
110 ;
111 } while(cp != NULL && cc < SERVICE_MAX);
112 }
113 service_order[cc] = SERVICE_NONE;
114 fclose(fd);
115 }
116 service_done = 1;
117}
118
119struct netent *
120getnetbyname(const char *name)
121{
122 struct netent *hp = 0;
56struct netent *
57getnetbyname(const char *name)
58{
59 struct netent *hp = 0;
123 int nserv = 0;
60 int rval;
124
61
125 if (!service_done)
126 init_services();
127
62
128 while (!hp) {
129 switch (service_order[nserv]) {
130 case SERVICE_NONE:
131 return NULL;
132 case SERVICE_TABLE:
133 hp = _getnetbyhtname(name);
134 break;
135 case SERVICE_BIND:
136 hp = _getnetbydnsname(name);
137 break;
138 case SERVICE_NIS:
139 hp = _getnetbynisname(name);
140 break;
141 }
142 nserv++;
143 }
144 return hp;
63 static const ns_dtab dtab[] = {
64 NS_FILES_CB(_ht_getnetbyname, NULL)
65 { NSSRC_DNS, _dns_getnetbyname, NULL },
66 NS_NIS_CB(_nis_getnetbyname, NULL) /* force -DHESIOD */
67 { 0 }
68 };
69
70 rval = nsdispatch((void *)&hp, dtab, NSDB_NETWORKS, "getnetbyname",
71 default_src, name);
72
73 if (rval != NS_SUCCESS)
74 return NULL;
75 else
76 return hp;
145}
146
147struct netent *
77}
78
79struct netent *
148getnetbyaddr(addr, af)
149 u_long addr;
150 int af;
80getnetbyaddr(u_long addr, int af)
151{
152 struct netent *hp = 0;
81{
82 struct netent *hp = 0;
153 int nserv = 0;
83 int rval;
154
84
155 if (!service_done)
156 init_services();
85 static const ns_dtab dtab[] = {
86 NS_FILES_CB(_ht_getnetbyaddr, NULL)
87 { NSSRC_DNS, _dns_getnetbyaddr, NULL },
88 NS_NIS_CB(_nis_getnetbyaddr, NULL) /* force -DHESIOD */
89 { 0 }
90 };
157
91
158 while (!hp) {
159 switch (service_order[nserv]) {
160 case SERVICE_NONE:
161 return 0;
162 case SERVICE_TABLE:
163 hp = _getnetbyhtaddr(addr, af);
164 break;
165 case SERVICE_BIND:
166 hp = _getnetbydnsaddr(addr, af);
167 break;
168 case SERVICE_NIS:
169 hp = _getnetbynisaddr(addr, af);
170 break;
171 }
172 nserv++;
173 }
174 return hp;
92 rval = nsdispatch((void *)&hp, dtab, NSDB_HOSTS, "getnetbyaddr",
93 default_src, addr, af);
94
95 if (rval != NS_SUCCESS)
96 return NULL;
97 else
98 return hp;
175}
176
177void
178setnetent(stayopen)
179 int stayopen;
180{
181 _setnethtent(stayopen);
182 _setnetdnsent(stayopen);
183}
184
185void
186endnetent()
187{
188 _endnethtent();
189 _endnetdnsent();
190}
99}
100
101void
102setnetent(stayopen)
103 int stayopen;
104{
105 _setnethtent(stayopen);
106 _setnetdnsent(stayopen);
107}
108
109void
110endnetent()
111{
112 _endnethtent();
113 _endnetdnsent();
114}