mdw@git.distorted.org.uk Git - adns/blob - client/adh-query.c

   1 /*
   2  * adh-query.c
   3  * - useful general-purpose resolver client program
   4  *   make queries and print answers
   5  */
   6 /*
   7  *  This file is
   8  *    Copyright (C) 1997-1999 Ian Jackson <ian@davenant.greenend.org.uk>
   9  *
  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>
  13  *
  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)
  17  *  any later version.
  18  *
  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.
  23  *
  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.
  27  */
  28
  29 #include "adnshost.h"
  30
  31 adns_state ads;
  32
  33 struct query_node {
  34   struct query_node *next, *back;
  35   struct perqueryflags_remember pqfr;
  36   char *id;
  37   adns_query qu;
  38 };
  39
  40 static struct { struct query_node *head, *tail; } outstanding;
  41
  42 static unsigned long idcounter;
  43
  44 void domain_do(const char *domain) {
  45   struct query_node *qun;
  46   char idbuf[20];
  47   int r;
  48
  49   if (!ads) {
  50     if (signal(SIGPIPE,SIG_IGN) == SIG_ERR) sysfail("ignore SIGPIPE",errno);
  51     r= adns_init(&ads,
  52                  adns_if_noautosys|adns_if_nosigpipe |
  53                  (ov_env ? 0 : adns_if_noenv) |
  54                  ov_verbose,
  55                  0);
  56     if (r) sysfail("adns_init",r);
  57   }
  58
  59   qun= malloc(sizeof(*qun));
  60   qun->pqfr= ov_pqfr;
  61   if (ov_id) {
  62     qun->id= xstrsave(ov_id);
  63   } else {
  64     sprintf(idbuf,"%lu",idcounter++);
  65     idcounter &= 0x0fffffffflu;
  66     qun->id= xstrsave(idbuf);
  67   }
  68
  69   r= adns_submit(ads, domain,
  70                  ov_type == adns_r_none ? adns_r_addr : ov_type,
  71                  (ov_search ? adns_qf_search : 0) |
  72                  (ov_tcp ? adns_qf_usevc : 0) |
  73                  (ov_pqfr.show_owner ? adns_qf_owner : 0) |
  74                  (ov_qc_query ? adns_qf_quoteok_query : 0) |
  75                  (ov_qc_anshost ? adns_qf_quoteok_anshost : 0) |
  76                  (ov_qc_cname ? 0 : adns_qf_quoteok_cname) |
  77                  ov_cname,
  78                  qun,
  79                  &qun->qu);
  80   if (r) sysfail("adns_submit",r);
  81
  82   LIST_LINK_TAIL(outstanding,qun);
  83 }
  84
  85 void of_asynch_id(const struct optioninfo *oi, const char *arg) { abort(); }
  86 void of_cancel_id(const struct optioninfo *oi, const char *arg) { abort(); }