mdw@git.distorted.org.uk Git - adns/blob - client/adnshost.h

   1 /*
   2  * adnshost.h
   3  * - useful general-purpose resolver client program, header file
   4  */
   5 /*
   6  *  This file is
   7  *    Copyright (C) 1997-1999 Ian Jackson <ian@davenant.greenend.org.uk>
   8  *
   9  *  It is part of adns, which is
  10  *    Copyright (C) 1997-1999 Ian Jackson <ian@davenant.greenend.org.uk>
  11  *    Copyright (C) 1999 Tony Finch <dot@dotat.at>
  12  *
  13  *  This program is free software; you can redistribute it and/or modify
  14  *  it under the terms of the GNU General Public License as published by
  15  *  the Free Software Foundation; either version 2, or (at your option)
  16  *  any later version.
  17  *
  18  *  This program is distributed in the hope that it will be useful,
  19  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  *  GNU General Public License for more details.
  22  *
  23  *  You should have received a copy of the GNU General Public License
  24  *  along with this program; if not, write to the Free Software Foundation,
  25  *  Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  26  */
  27
  28 #ifndef ADNSHOST_H_INCLUDED
  29 #define ADNSHOST_H_INCLUDED
  30
  31 #include <stdio.h>
  32 #include <string.h>
  33 #include <errno.h>
  34 #include <signal.h>
  35 #include <stdarg.h>
  36 #include <stdlib.h>
  37 #include <assert.h>
  38
  39 #include "config.h"
  40 #include "adns.h"
  41 #include "dlist.h"
  42
  43 /* declarations related to option processing */
  44
  45 struct optioninfo;
  46 typedef void optfunc(const struct optioninfo *oi, const char *arg);
  47
  48 struct optioninfo {
  49   enum oi_type {
  50     ot_end, ot_desconly,
  51     ot_flag, ot_value, ot_func, ot_funcarg
  52   } type;
  53   const char *desc;
  54   const char *sopt, *lopt;
  55   int *storep, value;
  56   optfunc *func;
  57   const char *argdesc;
  58 };
  59
  60 enum ttlmode { tm_none, tm_rel, tm_abs };
  61
  62 struct perqueryflags_remember {
  63   int show_owner, show_type, show_cname;
  64   int ttl;
  65 };
  66
  67 extern int ov_env, ov_pipe, ov_asynch;
  68 extern int ov_verbose;
  69 extern adns_rrtype ov_type;
  70 extern int ov_search, ov_qc_query, ov_qc_anshost, ov_qc_cname;
  71 extern int ov_tcp, ov_cname;
  72 extern char *ov_id;
  73 extern struct perqueryflags_remember ov_pqfr;
  74
  75 extern optfunc of_help, of_type, of_asynch_id, of_cancel_id;
  76
  77 const struct optioninfo *opt_findl(const char *opt);
  78 const struct optioninfo *opt_finds(const char **optp);
  79 void opt_do(const struct optioninfo *oip, const char *arg);
  80
  81 /* declarations related to query processing */
  82
  83 struct query_node {
  84   struct query_node *next, *back;
  85   struct perqueryflags_remember pqfr;
  86   char *id;
  87   adns_query qu;
  88 };
  89
  90 extern adns_state ads;
  91 extern struct outstanding_list { struct query_node *head, *tail; } outstanding;
  92
  93 void ensure_adns_init(void);
  94 void query_do(const char *domain);
  95 void query_done(struct query_node *qun, adns_answer *answer);
  96
  97 void of_asynch_id(const struct optioninfo *oi, const char *arg);
  98 void of_cancel_id(const struct optioninfo *oi, const char *arg);
  99
 100 /* declarations related to main program and useful utility functions */
 101
 102 void sysfail(const char *what, int errnoval) NONRETURNING;
 103 void usageerr(const char *what, ...) NONRETURNPRINTFFORMAT(1,2);
 104 void outerr(void) NONRETURNING;
 105 void setnonblock(int fd, int nonblock);
 106
 107 void *xmalloc(size_t sz);
 108 char *xstrsave(const char *str);
 109
 110 extern int rcode;
 111
 112 #endif