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d7ce7006 | 1 | /*\r |
2 | * Copyright (c) 1983, 1993\r | |
3 | * The Regents of the University of California. All rights reserved.\r | |
4 | *\r | |
5 | * Redistribution and use in source and binary forms, with or without\r | |
6 | * modification, are permitted provided that the following conditions\r | |
7 | * are met:\r | |
8 | * 1. Redistributions of source code must retain the above copyright\r | |
9 | * notice, this list of conditions and the following disclaimer.\r | |
10 | * 2. Redistributions in binary form must reproduce the above copyright\r | |
11 | * notice, this list of conditions and the following disclaimer in the\r | |
12 | * documentation and/or other materials provided with the distribution.\r | |
13 | * 3. All advertising materials mentioning features or use of this software\r | |
14 | * must display the following acknowledgement:\r | |
15 | * This product includes software developed by the University of\r | |
16 | * California, Berkeley and its contributors.\r | |
17 | * 4. Neither the name of the University nor the names of its contributors\r | |
18 | * may be used to endorse or promote products derived from this software\r | |
19 | * without specific prior written permission.\r | |
20 | *\r | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND\r | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE\r | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL\r | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS\r | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)\r | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT\r | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY\r | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF\r | |
31 | * SUCH DAMAGE.\r | |
32 | */\r | |
33 | \r | |
34 | /* Portions Copyright (c) 1993 Carlos Leandro and Rui Salgueiro\r | |
35 | * Dep. Matematica Universidade de Coimbra, Portugal, Europe\r | |
36 | *\r | |
37 | * Permission to use, copy, modify, and distribute this software for any\r | |
38 | * purpose with or without fee is hereby granted, provided that the above\r | |
39 | * copyright notice and this permission notice appear in all copies.\r | |
40 | *\r | |
41 | * from getnetent.c 1.1 (Coimbra) 93/06/02\r | |
42 | */\r | |
43 | \r | |
44 | #if defined(LIBC_SCCS) && !defined(lint)\r | |
45 | static char sccsid[] = "@(#)getnetent.c 8.1 (Berkeley) 6/4/93";\r | |
46 | static char orig_rcsid[] = "From: Id: getnetent.c,v 8.4 1997/06/01 20:34:37 vixie Exp";\r | |
47 | static chat rcsid[] = "$Id: getnetbyht.c,v 1.1.1.1 2003/11/19 01:51:27 kyu3 Exp $";\r | |
48 | #endif /* LIBC_SCCS and not lint */\r | |
49 | \r | |
50 | #include <sys/types.h>\r | |
51 | #include <sys/socket.h>\r | |
52 | #include <netinet/in.h>\r | |
53 | #include <arpa/inet.h>\r | |
54 | #include <arpa/nameser.h>\r | |
55 | #include <netdb.h>\r | |
56 | #include <stdio.h>\r | |
57 | #include <string.h>\r | |
58 | \r | |
59 | #define MAXALIASES 35\r | |
60 | \r | |
61 | static FILE *netf;\r | |
62 | static char line[BUFSIZ+1];\r | |
63 | static struct netent net;\r | |
64 | static char *net_aliases[MAXALIASES];\r | |
65 | static int _net_stayopen;\r | |
66 | \r | |
67 | void\r | |
68 | _setnethtent(int f)\r | |
69 | {\r | |
70 | \r | |
71 | if (netf == NULL)\r | |
72 | netf = fopen(_PATH_NETWORKS, "r" );\r | |
73 | else\r | |
74 | rewind(netf);\r | |
75 | _net_stayopen |= f;\r | |
76 | }\r | |
77 | \r | |
78 | void\r | |
79 | _endnethtent()\r | |
80 | {\r | |
81 | \r | |
82 | if (netf) {\r | |
83 | fclose(netf);\r | |
84 | netf = NULL;\r | |
85 | }\r | |
86 | _net_stayopen = 0;\r | |
87 | }\r | |
88 | \r | |
89 | struct netent *\r | |
90 | getnetent()\r | |
91 | {\r | |
92 | char *p;\r | |
93 | register char *cp, **q;\r | |
94 | \r | |
95 | if (netf == NULL && (netf = fopen(_PATH_NETWORKS, "r" )) == NULL)\r | |
96 | return (NULL);\r | |
97 | again:\r | |
98 | p = fgets(line, sizeof line, netf);\r | |
99 | if (p == NULL)\r | |
100 | return (NULL);\r | |
101 | if (*p == '#')\r | |
102 | goto again;\r | |
103 | cp = strpbrk(p, "#\n");\r | |
104 | if (cp == NULL)\r | |
105 | goto again;\r | |
106 | *cp = '\0';\r | |
107 | net.n_name = p;\r | |
108 | cp = strpbrk(p, " \t");\r | |
109 | if (cp == NULL)\r | |
110 | goto again;\r | |
111 | *cp++ = '\0';\r | |
112 | while (*cp == ' ' || *cp == '\t')\r | |
113 | cp++;\r | |
114 | p = strpbrk(cp, " \t");\r | |
115 | if (p != NULL)\r | |
116 | *p++ = '\0';\r | |
117 | net.n_net = inet_network(cp);\r | |
118 | net.n_addrtype = AF_INET;\r | |
119 | q = net.n_aliases = net_aliases;\r | |
120 | if (p != NULL) \r | |
121 | cp = p;\r | |
122 | while (cp && *cp) {\r | |
123 | if (*cp == ' ' || *cp == '\t') {\r | |
124 | cp++;\r | |
125 | continue;\r | |
126 | }\r | |
127 | if (q < &net_aliases[MAXALIASES - 1])\r | |
128 | *q++ = cp;\r | |
129 | cp = strpbrk(cp, " \t");\r | |
130 | if (cp != NULL)\r | |
131 | *cp++ = '\0';\r | |
132 | }\r | |
133 | *q = NULL;\r | |
134 | return (&net);\r | |
135 | }\r | |
136 | \r | |
137 | struct netent *\r | |
138 | _getnetbyhtname(register const char *name)\r | |
139 | {\r | |
140 | register struct netent *p;\r | |
141 | register char **cp;\r | |
142 | \r | |
143 | setnetent(_net_stayopen);\r | |
144 | while ( NULL != (p = getnetent()) ) {\r | |
145 | if (strcasecmp(p->n_name, name) == 0)\r | |
146 | break;\r | |
147 | for (cp = p->n_aliases; *cp != 0; cp++)\r | |
148 | if (strcasecmp(*cp, name) == 0)\r | |
149 | goto found;\r | |
150 | }\r | |
151 | found:\r | |
152 | if (!_net_stayopen)\r | |
153 | endnetent();\r | |
154 | return (p);\r | |
155 | }\r | |
156 | \r | |
157 | struct netent *\r | |
158 | _getnetbyhtaddr(register unsigned long net, register int type)\r | |
159 | {\r | |
160 | register struct netent *p;\r | |
161 | \r | |
162 | setnetent(_net_stayopen);\r | |
163 | while ( NULL != (p = getnetent()) )\r | |
164 | if (p->n_addrtype == type && p->n_net == net)\r | |
165 | break;\r | |
166 | if (!_net_stayopen)\r | |
167 | endnetent();\r | |
168 | return (p);\r | |
169 | }\r |