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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