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 void ensure_adns_init(void) {
41 if (signal(SIGPIPE,SIG_IGN) == SIG_ERR) sysfail("ignore SIGPIPE",errno);
43 adns_if_noautosys|adns_if_nosigpipe |
44 (ov_env ? 0 : adns_if_noenv) |
47 if (r) sysfail("adns_init",r);
50 void query_do(const char *domain) {
51 struct query_node *qun;
55 qun= malloc(sizeof(*qun));
58 qun->id= xstrsave(ov_id);
60 sprintf(idbuf,"%lu",idcounter++);
61 idcounter &= 0x0fffffffflu;
62 qun->id= xstrsave(idbuf);
65 r= adns_submit(ads, domain,
66 ov_type == adns_r_none ? adns_r_addr : ov_type,
67 (ov_search ? adns_qf_search : 0) |
68 (ov_tcp ? adns_qf_usevc : 0) |
69 (ov_pqfr.show_owner ? adns_qf_owner : 0) |
70 (ov_qc_query ? adns_qf_quoteok_query : 0) |
71 (ov_qc_anshost ? adns_qf_quoteok_anshost : 0) |
72 (ov_qc_cname ? 0 : adns_qf_quoteok_cname) |
76 if (r) sysfail("adns_submit",r);
78 LIST_LINK_TAIL(outstanding,qun);
81 static void dequeue_query(struct query_node *qun) {
82 LIST_UNLINK(outstanding,qun);
87 static void print_withspace(const char *str) {
88 if (printf("%s ", str) == EOF) outerr();
91 static void print_ttl(struct query_node *qun, adns_answer *answer) {
95 switch (qun->pqfr.ttl) {
99 if (time(&now) == (time_t)-1) sysfail("get current time",errno);
100 ttl= answer->expires < now ? 0 : answer->expires - now;
103 ttl= answer->expires;
108 if (printf("%lu ",ttl) == EOF) outerr();
111 static void print_owner_ttl(struct query_node *qun, adns_answer *answer) {
112 if (qun->pqfr.show_owner) print_withspace(answer->owner);
113 print_ttl(qun,answer);
116 static void print_status(adns_status st, struct query_node *qun, adns_answer *answer) {
117 static const adns_status statuspoints[]= {
119 adns_s_max_localfail, adns_s_max_remotefail, adns_s_max_tempfail,
120 adns_s_max_misconfig, adns_s_max_misquery
123 const adns_status *spp;
124 const char *statustypeabbrev, *statusabbrev, *statusstring;
127 statustypeabbrev= adns_errtypeabbrev(st);
128 for (minrcode=0, spp=statuspoints;
129 spp < statuspoints + (sizeof(statuspoints)/sizeof(statuspoints[0]));
131 if (st > *spp) minrcode++;
132 if (rcode < minrcode) rcode= minrcode;
134 statusabbrev= adns_errabbrev(st);
135 statusstring= adns_strerror(st);
136 assert(!strchr(statusstring,'"'));
138 if (printf("%s %d %s ", statustypeabbrev, st, statusabbrev)
140 print_owner_ttl(qun,answer);
141 if (qun->pqfr.show_cname)
142 print_withspace(answer->cname ? answer->cname : "$");
143 if (printf("\"%s\"\n", statusstring) == EOF) outerr();
146 void query_done(struct query_node *qun, adns_answer *answer) {
149 const char *rrp, *realowner, *typename;
155 if (printf("%s %d ", qun->id, nrrs) == EOF) outerr();
156 print_status(st,qun,answer);
159 if (fputs("; failed ",stdout) == EOF) outerr();
160 print_status(st,qun,answer);
161 } else if (qun->pqfr.show_cname && answer->cname) {
162 print_owner_ttl(qun,answer);
163 if (printf("CNAME %s\n",answer->cname) == EOF) outerr();
166 if (qun->pqfr.show_owner) {
167 realowner= answer->cname ? answer->cname : answer->owner;;
173 for (rrn=0, rrp = answer->rrs.untyped;
175 rrn++, rrp += answer->rrsz) {
176 if (realowner) print_withspace(realowner);
177 print_ttl(qun,answer);
178 ist= adns_rr_info(answer->type, &typename, 0, 0, rrp, &datastr);
179 if (ist == adns_s_nomemory) sysfail("adns_rr_info failed",ENOMEM);
181 if (qun->pqfr.show_type) print_withspace(typename);
182 if (printf("%s\n",datastr) == EOF) outerr();
186 if (fflush(stdout)) outerr();
191 void of_asynch_id(const struct optioninfo *oi, const char *arg) {
193 ov_id= xstrsave(arg);
196 void of_cancel_id(const struct optioninfo *oi, const char *arg) {
197 struct query_node *qun;
199 for (qun= outstanding.head;
200 qun && !strcmp(qun->id,arg);
203 adns_cancel(qun->qu);