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28f540f4 RM |
1 | /* |
2 | * Copyright (c) 1983 Regents of the University of California. | |
3 | * 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 | /* Portions Copyright (c) 1993 Carlos Leandro and Rui Salgueiro | |
35 | * Dep. Matematica Universidade de Coimbra, Portugal, Europe | |
36 | * | |
37 | * Permission to use, copy, modify, and distribute this software for any | |
38 | * purpose with or without fee is hereby granted, provided that the above | |
39 | * copyright notice and this permission notice appear in all copies. | |
40 | * | |
41 | * from getnetent.c 1.1 (Coimbra) 93/06/02 | |
42 | */ | |
43 | ||
44 | #if defined(LIBC_SCCS) && !defined(lint) | |
45 | static char sccsid[] = "@(#)getnetent.c 8.1 (Berkeley) 6/4/93"; | |
46 | static char rcsid[] = "$Id$"; | |
47 | #endif /* LIBC_SCCS and not lint */ | |
48 | ||
49 | #include <sys/param.h> | |
50 | #include <sys/socket.h> | |
51 | #include <netinet/in.h> | |
52 | #include <arpa/inet.h> | |
53 | #include <arpa/nameser.h> | |
54 | ||
55 | #include <stdio.h> | |
56 | #include <resolv.h> | |
57 | #include <netdb.h> | |
58 | #include <string.h> | |
59 | ||
60 | #ifndef _PATH_NETWORKS | |
61 | #define _PATH_NETWORKS "/etc/networks" | |
62 | #endif | |
63 | ||
64 | #define MAXALIASES 35 | |
65 | ||
66 | static FILE *netf; | |
67 | static char line[BUFSIZ+1]; | |
68 | static struct netent net; | |
69 | static char *net_aliases[MAXALIASES]; | |
70 | int _net_stayopen; | |
71 | ||
72 | void _setnetent __P((int)); | |
73 | void _endnetent __P((void)); | |
74 | ||
75 | void | |
76 | setnetent(stayopen) | |
77 | int stayopen; | |
78 | { | |
79 | ||
80 | sethostent(stayopen); | |
81 | _setnetent(stayopen); | |
82 | } | |
83 | ||
84 | void | |
85 | endnetent() | |
86 | { | |
87 | ||
88 | endhostent(); | |
89 | _endnetent(); | |
90 | } | |
91 | ||
92 | void | |
93 | _setnetent(f) | |
94 | int f; | |
95 | { | |
96 | ||
97 | if (netf == NULL) | |
98 | netf = fopen(_PATH_NETWORKS, "r" ); | |
99 | else | |
100 | rewind(netf); | |
101 | _net_stayopen |= f; | |
102 | } | |
103 | ||
104 | void | |
105 | _endnetent() | |
106 | { | |
107 | ||
108 | if (netf) { | |
109 | fclose(netf); | |
110 | netf = NULL; | |
111 | } | |
112 | _net_stayopen = 0; | |
113 | } | |
114 | ||
115 | struct netent * | |
116 | getnetent() | |
117 | { | |
118 | char *p; | |
119 | register char *cp, **q; | |
120 | ||
121 | if (netf == NULL && (netf = fopen(_PATH_NETWORKS, "r" )) == NULL) | |
122 | return (NULL); | |
123 | again: | |
124 | p = fgets(line, BUFSIZ, netf); | |
125 | if (p == NULL) | |
126 | return (NULL); | |
127 | if (*p == '#') | |
128 | goto again; | |
129 | cp = strpbrk(p, "#\n"); | |
130 | if (cp == NULL) | |
131 | goto again; | |
132 | *cp = '\0'; | |
133 | net.n_name = p; | |
134 | cp = strpbrk(p, " \t"); | |
135 | if (cp == NULL) | |
136 | goto again; | |
137 | *cp++ = '\0'; | |
138 | while (*cp == ' ' || *cp == '\t') | |
139 | cp++; | |
140 | p = strpbrk(cp, " \t"); | |
141 | if (p != NULL) | |
142 | *p++ = '\0'; | |
143 | net.n_net = inet_network(cp); | |
144 | net.n_addrtype = AF_INET; | |
145 | q = net.n_aliases = net_aliases; | |
55707265 | 146 | if (p != NULL) { |
28f540f4 | 147 | cp = p; |
55707265 RM |
148 | while (cp && *cp) { |
149 | if (*cp == ' ' || *cp == '\t') { | |
150 | cp++; | |
151 | continue; | |
152 | } | |
153 | if (q < &net_aliases[MAXALIASES - 1]) | |
154 | *q++ = cp; | |
155 | cp = strpbrk(cp, " \t"); | |
156 | if (cp != NULL) | |
157 | *cp++ = '\0'; | |
28f540f4 | 158 | } |
28f540f4 RM |
159 | } |
160 | *q = NULL; | |
161 | return (&net); | |
162 | } |