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(); }