2 * Copyright (c) 1983, 1993 The Regents of the University of California.
3 * Copyright (c) 1993 Digital Equipment Corporation.
4 * Copyright (c) 2012 G. Vanem <gvanem@yahoo.no>.
5 * Copyright (c) 2017 Ali Abdulkadir <autostart.ini@gmail.com>.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
41 #include <netdissect-stdinc.h>
42 #include <getservent.h>
44 static FILE *servf = NULL;
45 static char line[BUFSIZ+1];
46 static struct servent serv;
47 static char *serv_aliases[MAXALIASES];
49 const char *etc_path(const char *file);
52 * Check if <file> exists in the current directory and, if so, return it.
53 * Else return either "%SYSTEMROOT%\System32\drivers\etc\<file>"
54 * or $PREFIX/etc/<file>.
55 * "<file>" is aka __PATH_SERVICES (aka "services" on Windows and
56 * "/etc/services" on other platforms that would need this).
58 const char *etc_path(const char *file)
60 const char *env = getenv(__PATH_SYSROOT);
61 static char path[_MAX_PATH];
63 /* see if "<file>" exists locally or whether __PATH_SYSROOT is valid */
64 if (fopen(file, "r") || !env)
68 snprintf(path, sizeof(path), "%s%s%s", env, __PATH_ETC_INET, file);
70 snprintf(path, sizeof(path), "%s%s", env, file);
79 servf = fopen(etc_path(__PATH_SERVICES), "r");
101 if (servf == NULL && (servf = fopen(etc_path(__PATH_SERVICES), "r")) == NULL)
105 if ((p = fgets(line, BUFSIZ, servf)) == NULL)
109 cp = strpbrk(p, "#\n");
114 p = strpbrk(p, " \t");
118 while (*p == ' ' || *p == '\t')
120 cp = strpbrk(p, ",/");
124 serv.s_port = htons((u_short)atoi(p));
126 q = serv.s_aliases = serv_aliases;
127 cp = strpbrk(cp, " \t");
131 if (*cp == ' ' || *cp == '\t') {
135 if (q < &serv_aliases[MAXALIASES - 1])
137 cp = strpbrk(cp, " \t");