1 /* $NetBSD: checkrc.c,v 1.3 2021/01/31 22:45:46 rillig Exp $ */
2
3 /*-
4 * Copyright (c) 2012 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jeffrey C. Rizzo
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 /* checkrc.c -- Create a script on the target to check the state of
33 * its rc.conf variables. */
34
35 #include <curses.h>
36 #include <err.h>
37 #include <stdio.h>
38 #include "defs.h"
39 #include "msg_defs.h"
40 #include "menu_defs.h"
41
42 #define RC_CHECK_SCRIPT "/tmp/checkrc.sh"
43
44 static int create_script(const char *, int);
45 static int check(const char *, int);
46
47 char *rcconf = NULL;
48
49 enum {
50 CHECK_CONF,
51 CHECK_DEFAULT
52 };
53
54 static int
create_script(const char * varname,int filetocheck)55 create_script(const char *varname, int filetocheck)
56 {
57 FILE *fp;
58
59 if ((fp = fopen(target_expand(RC_CHECK_SCRIPT), "w")) == NULL) {
60 if (logfp)
61 fprintf(logfp,"Could not open %s for writing",
62 target_expand(RC_CHECK_SCRIPT));
63 warn("Could not open %s for writing",
64 target_expand(RC_CHECK_SCRIPT));
65 return 1;
66 }
67
68 if (filetocheck == CHECK_DEFAULT)
69 fprintf(fp, "#!/bin/sh\n. /etc/defaults/rc.conf\n"
70 ". /etc/rc.subr\n");
71 else
72 fprintf(fp, "#!/bin/sh\n. /etc/rc.conf\n. /etc/rc.subr\n");
73 fprintf(fp, "if checkyesno %s\nthen\necho YES\nelse\necho NO\nfi\n",
74 varname);
75
76 fclose(fp);
77 return 0;
78 }
79
80 static int
check(const char * varname,int filetocheck)81 check(const char *varname, int filetocheck)
82 {
83 char *buf;
84 int rv;
85
86 create_script(varname, filetocheck);
87
88 if (target_already_root())
89 collect(T_OUTPUT, &buf, "/bin/sh %s 2>&1", RC_CHECK_SCRIPT);
90 else
91 collect(T_OUTPUT, &buf, "chroot %s /bin/sh %s 2>&1",
92 target_prefix(), RC_CHECK_SCRIPT);
93
94
95 unlink(target_expand(RC_CHECK_SCRIPT));
96
97 if (logfp) {
98 fprintf(logfp,"var %s is %s\n", varname, buf);
99 fflush(logfp);
100 }
101
102 rv = strncmp(buf, "YES", strlen("YES")) == 0;
103 free(buf);
104 return rv;
105 }
106
107 int
check_rcvar(const char * varname)108 check_rcvar(const char *varname)
109 {
110 return check(varname, CHECK_CONF);
111 }
112
113 int
check_rcdefault(const char * varname)114 check_rcdefault(const char *varname)
115 {
116 return check(varname, CHECK_DEFAULT);
117 }
118