3 * - useful general-purpose resolver client program
4 * make queries and print answers
8 * Copyright (C) 1997-1999 Ian Jackson <ian@davenant.greenend.org.uk>
10 * It is part of adns, which is
11 * Copyright (C) 1997-1999 Ian Jackson <ian@davenant.greenend.org.uk>
12 * Copyright (C) 1999 Tony Finch <dot@dotat.at>
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2, or (at your option)
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software Foundation,
26 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
32 struct outstanding_list outstanding
;
34 static unsigned long idcounter
;
36 #define STATUSTYPEMAX(v) { adns_s_max_##v, #v }
37 static const struct statustypemax
{
40 } statustypemaxes
[]= {
42 STATUSTYPEMAX(localfail
),
43 STATUSTYPEMAX(remotefail
),
44 STATUSTYPEMAX(tempfail
),
45 STATUSTYPEMAX(misconfig
),
46 STATUSTYPEMAX(misquery
),
47 STATUSTYPEMAX(permfail
),
50 void ensure_adns_init(void) {
55 if (signal(SIGPIPE
,SIG_IGN
) == SIG_ERR
) sysfail("ignore SIGPIPE",errno
);
57 adns_if_noautosys
|adns_if_nosigpipe
|
58 (ov_env ?
0 : adns_if_noenv
) |
61 if (r
) sysfail("adns_init",r
);
64 void query_do(const char *domain
) {
65 struct query_node
*qun
;
69 qun
= malloc(sizeof(*qun
));
72 qun
->id
= xstrsave(ov_id
);
74 sprintf(idbuf
,"%lu",idcounter
++);
75 idcounter
&= 0x0fffffffflu
;
76 qun
->id
= xstrsave(idbuf
);
79 r
= adns_submit(ads
, domain
,
80 ov_type
== adns_r_none ? adns_r_addr
: ov_type
,
81 (ov_search ? adns_qf_search
: 0) |
82 (ov_tcp ? adns_qf_usevc
: 0) |
83 (ov_pqfr
.show_owner ? adns_qf_owner
: 0) |
84 (ov_qc_query ? adns_qf_quoteok_query
: 0) |
85 (ov_qc_anshost ? adns_qf_quoteok_anshost
: 0) |
86 (ov_qc_cname ?
0 : adns_qf_quoteok_cname
) |
90 if (r
) sysfail("adns_submit",r
);
92 LIST_LINK_TAIL(outstanding
,qun
);
95 static void print_withspace(const char *str
) {
96 if (printf("%s ", str
) == EOF
) outerr();
99 static void print_ttl(struct query_node
*qun
, adns_answer
*answer
) {
103 switch (qun
->pqfr
.ttl
) {
107 if (time(&now
) == (time_t)-1) sysfail("get current time",errno
);
108 ttl
= answer
->expires
< now ?
0 : answer
->expires
- now
;
111 ttl
= answer
->expires
;
116 if (printf("%lu ",ttl
) == EOF
) outerr();
119 static void print_owner_ttl(struct query_node
*qun
, adns_answer
*answer
) {
120 if (qun
->pqfr
.show_owner
) print_withspace(answer
->owner
);
121 print_ttl(qun
,answer
);
124 static void print_status(adns_status st
, struct query_node
*qun
, adns_answer
*answer
) {
125 int stnmin
, stnmax
, stn
;
126 const char *statusabbrev
, *statusstring
;
129 stnmax
= sizeof(statustypemaxes
)/sizeof(statustypemaxes
[0]);
130 while (stnmin
< stnmax
) {
131 stn
= (stnmin
+stnmax
)>>1;
132 if (st
> statustypemaxes
[stn
].smax
) stnmin
= stn
+1; else stnmax
= stn
;
135 assert(statustypemaxes
[stn
].smax
>= st
);
137 if (rcode
< stn
) rcode
= stn
;
139 statusabbrev
= adns_errabbrev(st
);
140 statusstring
= adns_strerror(st
);
141 assert(!strchr(statusstring
,'"'));
143 if (printf("%s %d %s ", statustypemaxes
[stn
].abbrev
, st
, statusabbrev
)
145 print_owner_ttl(qun
,answer
);
146 if (qun
->pqfr
.show_cname
)
147 print_withspace(answer
->cname ? answer
->cname
: "$");
148 if (printf("\"%s\"\n", statusstring
) == EOF
) outerr();
151 void query_done(struct query_node
*qun
, adns_answer
*answer
) {
154 const char *rrp
, *realowner
, *typename
;
157 if (ov_pipe
) setnonblock(1,0);
162 if (printf("%s %d", qun
->id
, nrrs
) == EOF
) outerr();
163 print_status(st
,qun
,answer
);
166 if (fputs("; failed",stdout
) == EOF
) outerr();
167 print_status(st
,qun
,answer
);
168 } else if (answer
->cname
) {
169 print_owner_ttl(qun
,answer
);
170 if (printf("CNAME %s\n",answer
->cname
) == EOF
) outerr();
173 if (qun
->pqfr
.show_owner
) {
174 realowner
= answer
->cname ? answer
->cname
: answer
->owner
;;
180 for (rrn
=0, rrp
= answer
->rrs
.untyped
;
182 rrn
++, rrp
+= answer
->rrsz
) {
183 if (realowner
) print_withspace(realowner
);
184 print_ttl(qun
,answer
);
185 ist
= adns_rr_info(answer
->type
, &typename
, 0, 0, rrp
, &datastr
);
186 if (ist
== adns_s_nomemory
) sysfail("adns_rr_info failed",ENOMEM
);
188 if (qun
->pqfr
.show_type
) print_withspace(typename
);
189 if (printf("%s\n",datastr
) == EOF
) outerr();
193 if (fflush(stdout
)) outerr();
194 LIST_UNLINK(outstanding
,qun
);
200 void of_asynch_id(const struct optioninfo
*oi
, const char *arg
) {
202 ov_id
= xstrsave(arg
);
205 void of_cancel_id(const struct optioninfo
*oi
, const char *arg
) { abort(); }