1 /* $NetBSD: dns_str_resflags.c,v 1.3 2023/12/23 20:30:43 christos Exp $ */
2
3 /*++
4 /* NAME
5 /* dns_str_resflags 3
6 /* SUMMARY
7 /* convert resolver flags to printable form
8 /* SYNOPSIS
9 /* #include <dns.h>
10 /*
11 /* const char *dns_str_resflags(mask)
12 /* unsigned long mask;
13 /* DESCRIPTION
14 /* dns_str_resflags() converts RES_* resolver(5) flags from internal
15 /* form to printable string. Individual flag names are separated
16 /* with '|'. The result is overwritten with each call.
17 /* LICENSE
18 /* .ad
19 /* .fi
20 /* The Secure Mailer license must be distributed with this software.
21 /* AUTHOR(S)
22 /* Wietse Venema
23 /* Google, Inc.
24 /* 111 8th Avenue
25 /* New York, NY 10011, USA
26 /*
27 /* Viktor Dukhovni
28 /*--*/
29
30 /*
31 * System library.
32 */
33 #include <sys_defs.h>
34 #include <netinet/in.h>
35 #include <arpa/nameser.h>
36 #include <resolv.h>
37
38 /*
39 * Utility library.
40 */
41 #include <name_mask.h>
42
43 /*
44 * DNS library.
45 */
46 #include <dns.h>
47
48 /*
49 * Application-specific.
50 */
51
52 /*
53 * This list overlaps with dns_res_opt_masks[] in smtp.c, but there we
54 * permit only a small subset of all possible flags.
55 */
56 static const LONG_NAME_MASK resflag_table[] = {
57 "RES_INIT", RES_INIT,
58 "RES_DEBUG", RES_DEBUG,
59 #if defined(RES_AAONLY) && !HAVE_GLIBC_API_VERSION_SUPPORT(2, 24)
60 "RES_AAONLY", RES_AAONLY,
61 #endif
62 "RES_USEVC", RES_USEVC,
63 #if defined(RES_PRIMARY) && !HAVE_GLIBC_API_VERSION_SUPPORT(2, 24)
64 "RES_PRIMARY", RES_PRIMARY,
65 #endif
66 "RES_IGNTC", RES_IGNTC,
67 "RES_RECURSE", RES_RECURSE,
68 "RES_DEFNAMES", RES_DEFNAMES,
69 "RES_STAYOPEN", RES_STAYOPEN,
70 "RES_DNSRCH", RES_DNSRCH,
71 #ifdef RES_INSECURE1
72 "RES_INSECURE1", RES_INSECURE1,
73 #endif
74 #ifdef RES_INSECURE2
75 "RES_INSECURE2", RES_INSECURE2,
76 #endif
77 "RES_NOALIASES", RES_NOALIASES,
78 #ifdef RES_USE_INET6
79 "RES_USE_INET6", RES_USE_INET6,
80 #endif
81 #ifdef RES_ROTATE
82 "RES_ROTATE", RES_ROTATE,
83 #endif
84 #if defined(RES_NOCHECKNAME) && !HAVE_GLIBC_API_VERSION_SUPPORT(2, 24)
85 "RES_NOCHECKNAME", RES_NOCHECKNAME,
86 #endif
87 "RES_USE_EDNS0", RES_USE_EDNS0,
88 "RES_USE_DNSSEC", RES_USE_DNSSEC,
89 #if defined(RES_KEEPTSIG) && !HAVE_GLIBC_API_VERSION_SUPPORT(2, 24)
90 "RES_KEEPTSIG", RES_KEEPTSIG,
91 #endif
92 #if defined(RES_BLAST) && !HAVE_GLIBC_API_VERSION_SUPPORT(2, 24)
93 "RES_BLAST", RES_BLAST,
94 #endif
95 #ifdef RES_USEBSTRING
96 "RES_USEBSTRING", RES_USEBSTRING,
97 #endif
98 #ifdef RES_NSID
99 "RES_NSID", RES_NSID,
100 #endif
101 #ifdef RES_NOIP6DOTINT
102 "RES_NOIP6DOTINT", RES_NOIP6DOTINT,
103 #endif
104 #ifdef RES_USE_DNAME
105 "RES_USE_DNAME", RES_USE_DNAME,
106 #endif
107 #ifdef RES_NO_NIBBLE2
108 "RES_NO_NIBBLE2", RES_NO_NIBBLE2,
109 #endif
110 #ifdef RES_SNGLKUP
111 "RES_SNGLKUP", RES_SNGLKUP,
112 #endif
113 #ifdef RES_SNGLKUPREOP
114 "RES_SNGLKUPREOP", RES_SNGLKUPREOP,
115 #endif
116 #ifdef RES_NOTLDQUERY
117 "RES_NOTLDQUERY", RES_NOTLDQUERY,
118 #endif
119 0,
120 };
121
122 /* dns_str_resflags - convert RES_* resolver flags to printable form */
123
dns_str_resflags(unsigned long mask)124 const char *dns_str_resflags(unsigned long mask)
125 {
126 static VSTRING *buf;
127
128 if (buf == 0)
129 buf = vstring_alloc(20);
130 return (str_long_name_mask_opt(buf, "dsns_str_resflags", resflag_table,
131 mask, NAME_MASK_NUMBER | NAME_MASK_PIPE));
132 }
133