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1 | /* |
2 | * adh-main.c |
3 | * - useful general-purpose resolver client program |
4 | * main program and useful subroutines |
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 | |
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29 | #include "adnshost.h" |
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30 | |
31 | void sysfail(const char *what, int errnoval) { |
32 | fprintf(stderr,"adnshost failed: %s: %s\n",what,strerror(errnoval)); |
33 | exit(10); |
34 | } |
35 | |
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36 | void usageerr(const char *fmt, ...) { |
37 | va_list al; |
38 | fputs("adnshost usage error: ",stderr); |
39 | va_start(al,fmt); |
40 | vfprintf(stderr,fmt,al); |
41 | va_end(al); |
42 | putc('\n',stderr); |
43 | exit(11); |
44 | } |
45 | |
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46 | static void domain_do_arg(const char *domain) { |
47 | if (ov_pipe) usageerr("-f/--pipe not consistent with domains on command line"); |
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48 | domain_do(domain); |
49 | } |
50 | |
51 | void *xmalloc(size_t sz) { |
52 | void *p; |
53 | |
54 | p= malloc(sz); if (!p) sysfail("malloc",sz); |
55 | return p; |
56 | } |
57 | |
58 | char *xstrsave(const char *str) { |
59 | char *p; |
60 | |
61 | p= xmalloc(strlen(str)+1); |
62 | strcpy(p,str); |
63 | return p; |
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64 | } |
65 | |
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66 | void of_type(const struct optioninfo *oi, const char *arg) { abort(); } |
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67 | |
68 | int main(int argc, const char *const *argv) { |
69 | const char *arg; |
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70 | const struct optioninfo *oip; |
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71 | |
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72 | while ((arg= *++argv)) { |
73 | if (arg[0] == '-') { |
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74 | if (arg[1] == '-') { |
75 | oip= opt_findl(arg+2); |
76 | if (oip->type == ot_funcarg) { |
77 | arg= *++argv; |
78 | if (!arg) usageerr("option --%s requires a value argument",oip->lopt); |
79 | } else { |
80 | arg= 0; |
81 | } |
82 | opt_do(oip,arg); |
83 | } else if (arg[1] == 0) { |
84 | arg= *++argv; |
85 | if (!arg) usageerr("option `-' must be followed by a domain"); |
86 | domain_do_arg(arg); |
87 | } else { /* arg[1] != '-', != '\0' */ |
88 | ++arg; |
89 | while (*arg) { |
90 | oip= opt_finds(&arg); |
91 | if (oip->type == ot_funcarg) { |
92 | if (!*arg) { |
93 | arg= *++argv; |
94 | if (!arg) usageerr("option -%s requires a value argument",oip->sopt); |
95 | } |
96 | arg= ""; |
97 | } else { |
98 | arg= 0; |
99 | } |
100 | opt_do(oip,arg); |
101 | } |
102 | } |
103 | } else { /* arg[0] != '-' */ |
104 | domain_do_arg(arg); |
105 | } |
106 | } |
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107 | if (!ov_pipe && !ads) usageerr("no domains given, and -f/--pipe not used; try --help"); |
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108 | abort(); |
109 | } |