| 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 | |
| 29 | #include "adnshost.h" |
| 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 | |
| 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 | |
| 46 | static void domain_do_arg(const char *domain) { |
| 47 | if (ov_pipe) usageerr("-f/--pipe not consistent with domains on command line"); |
| 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; |
| 64 | } |
| 65 | |
| 66 | void of_type(const struct optioninfo *oi, const char *arg) { abort(); } |
| 67 | |
| 68 | int main(int argc, const char *const *argv) { |
| 69 | const char *arg; |
| 70 | const struct optioninfo *oip; |
| 71 | |
| 72 | while ((arg= *++argv)) { |
| 73 | if (arg[0] == '-') { |
| 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 | } |
| 107 | if (!ov_pipe && !ads) usageerr("no domains given, and -f/--pipe not used; try --help"); |
| 108 | abort(); |
| 109 | } |