1 /* $NetBSD: getservent_r.c,v 1.5 2005/04/18 19:39:45 kleink Exp $ */
2
3 /*
4 * Copyright (c) 1983, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 #include <sys/types.h>
34
35 #if defined(LIBC_SCCS) && !defined(lint)
36 #if 0
37 static char sccsid[] = "@(#)getservent.c 8.1 (Berkeley) 6/4/93";
38 #else
39 __RCSID("$NetBSD: getservent_r.c,v 1.5 2005/04/18 19:39:45 kleink Exp $");
40 #endif
41 #endif /* LIBC_SCCS and not lint */
42
43 #include <netdb.h>
44 #include <errno.h>
45 #include <stdio.h>
46 #include <string.h>
47 #include <stdlib.h>
48 #include <netinet/in.h>
49
50 #include "servent.h"
51
52 void
setservent_r(int f,struct servent_data * sd)53 setservent_r(int f, struct servent_data *sd)
54 {
55 if (sd->fp == NULL)
56 sd->fp = fopen(_PATH_SERVICES, "r");
57 else
58 rewind(sd->fp);
59 sd->stayopen |= f;
60 }
61
62 void
endservent_r(struct servent_data * sd)63 endservent_r(struct servent_data *sd)
64 {
65 if (sd->fp) {
66 (void)fclose(sd->fp);
67 sd->fp = NULL;
68 }
69 if (sd->aliases) {
70 free(sd->aliases);
71 sd->aliases = NULL;
72 sd->maxaliases = 0;
73 }
74 if (sd->line) {
75 free(sd->line);
76 sd->line = NULL;
77 }
78 sd->stayopen = 0;
79 }
80
81 struct servent *
getservent_r(struct servent * sp,struct servent_data * sd)82 getservent_r(struct servent *sp, struct servent_data *sd)
83 {
84 char *p, *cp, **q;
85 size_t i = 0;
86 int oerrno;
87
88 if (sd->fp == NULL && (sd->fp = fopen(_PATH_SERVICES, "r")) == NULL)
89 return NULL;
90
91 for (;;) {
92 if (sd->line)
93 free(sd->line);
94 // sd->line = fparseln(sd->fp, NULL, NULL, NULL, FPARSELN_UNESCALL);
95 fprintf(stderr, "*** FIX ME! getservent_r() is going to fail!!!\n");
96 sd->line = NULL;
97 if (sd->line == NULL)
98 return NULL;
99 sp->s_name = p = sd->line;
100 p = strpbrk(p, " \t");
101 if (p == NULL)
102 continue;
103 *p++ = '\0';
104 while (*p == ' ' || *p == '\t')
105 p++;
106 cp = strpbrk(p, ",/");
107 if (cp == NULL)
108 continue;
109 *cp++ = '\0';
110 sp->s_port = htons((u_short)atoi(p));
111 sp->s_proto = cp;
112 if (sd->aliases == NULL) {
113 sd->maxaliases = 10;
114 sd->aliases = malloc(sd->maxaliases * sizeof(char *));
115 if (sd->aliases == NULL) {
116 oerrno = errno;
117 endservent_r(sd);
118 errno = oerrno;
119 return NULL;
120 }
121 }
122 q = sp->s_aliases = sd->aliases;
123 cp = strpbrk(cp, " \t");
124 if (cp != NULL)
125 *cp++ = '\0';
126 while (cp && *cp) {
127 if (*cp == ' ' || *cp == '\t') {
128 cp++;
129 continue;
130 }
131 if (i == sd->maxaliases - 2) {
132 sd->maxaliases *= 2;
133 q = realloc(q,
134 sd->maxaliases * sizeof(char *));
135 if (q == NULL) {
136 oerrno = errno;
137 endservent_r(sd);
138 errno = oerrno;
139 return NULL;
140 }
141 sp->s_aliases = sd->aliases = q;
142 }
143 q[i++] = cp;
144 cp = strpbrk(cp, " \t");
145 if (cp != NULL)
146 *cp++ = '\0';
147 }
148 q[i] = NULL;
149 return sp;
150 }
151 }
152