3 * - useful general-purpose resolver client program
4 * main program and useful subroutines
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.
31 void sysfail(const char *what
, int errnoval
) {
32 fprintf(stderr
,"adnshost failed: %s: %s\n",what
,strerror(errnoval
));
36 void usageerr(const char *fmt
, ...) {
38 fputs("adnshost usage error: ",stderr
);
40 vfprintf(stderr
,fmt
,al
);
46 static void domain_do_arg(const char *domain
) {
47 if (ov_pipe
) usageerr("-f/--pipe not consistent with domains on command line");
51 void *xmalloc(size_t sz
) {
54 p
= malloc(sz
); if (!p
) sysfail("malloc",sz
);
58 char *xstrsave(const char *str
) {
61 p
= xmalloc(strlen(str
)+1);
66 void of_type(const struct optioninfo
*oi
, const char *arg
) { abort(); }
68 int main(int argc
, const char *const *argv
) {
70 const struct optioninfo
*oip
;
72 while ((arg
= *++argv
)) {
75 oip
= opt_findl(arg
+2);
76 if (oip
->type
== ot_funcarg
) {
78 if (!arg
) usageerr("option --%s requires a value argument",oip
->lopt
);
83 } else if (arg
[1] == 0) {
85 if (!arg
) usageerr("option `-' must be followed by a domain");
87 } else { /* arg[1] != '-', != '\0' */
91 if (oip
->type
== ot_funcarg
) {
94 if (!arg
) usageerr("option -%s requires a value argument",oip
->sopt
);
103 } else { /* arg[0] != '-' */
107 if (!ov_pipe
&& !ads
) usageerr("no domains given, and -f/--pipe not used; try --help");