From 37e63909c09359ddd5baf7a237387ee5f7219c2d Mon Sep 17 00:00:00 2001 From: Steven Young Date: Wed, 16 Feb 2000 17:32:49 +0000 Subject: This commit was generated by cvs2svn to compensate for changes in r2, which included commits to RCS files with non-trunk default branches. --- adns-0.6/client/adh-main.c | 243 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 243 insertions(+) create mode 100644 adns-0.6/client/adh-main.c (limited to 'adns-0.6/client/adh-main.c') diff --git a/adns-0.6/client/adh-main.c b/adns-0.6/client/adh-main.c new file mode 100644 index 0000000..81cff54 --- /dev/null +++ b/adns-0.6/client/adh-main.c @@ -0,0 +1,243 @@ +/* + * adh-main.c + * - useful general-purpose resolver client program + * main program and useful subroutines + */ +/* + * This file is + * Copyright (C) 1997-1999 Ian Jackson + * + * It is part of adns, which is + * Copyright (C) 1997-1999 Ian Jackson + * Copyright (C) 1999 Tony Finch + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#include "adnshost.h" + +void sysfail(const char *what, int errnoval) { + fprintf(stderr,"adnshost failed: %s: %s\n",what,strerror(errnoval)); + exit(10); +} + +void usageerr(const char *fmt, ...) { + va_list al; + fputs("adnshost usage error: ",stderr); + va_start(al,fmt); + vfprintf(stderr,fmt,al); + va_end(al); + putc('\n',stderr); + exit(11); +} + +void outerr(void) { + sysfail("write to stdout",errno); +} + +void *xmalloc(size_t sz) { + void *p; + + p= malloc(sz); if (!p) sysfail("malloc",sz); + return p; +} + +char *xstrsave(const char *str) { + char *p; + + p= xmalloc(strlen(str)+1); + strcpy(p,str); + return p; +} + +void of_type(const struct optioninfo *oi, const char *arg) { + static const struct typename { + adns_rrtype type; + const char *desc; + } typenames[]= { + /* enhanced versions */ + { adns_r_ns, "ns" }, + { adns_r_soa, "soa" }, + { adns_r_ptr, "ptr" }, + { adns_r_mx, "mx" }, + { adns_r_rp, "rp" }, + { adns_r_addr, "addr" }, + + /* types with only one version */ + { adns_r_cname, "cname" }, + { adns_r_hinfo, "hinfo" }, + { adns_r_txt, "txt" }, + + /* raw versions */ + { adns_r_a, "a" }, + { adns_r_ns_raw, "ns-" }, + { adns_r_soa_raw, "soa-" }, + { adns_r_ptr_raw, "ptr-" }, + { adns_r_mx_raw, "mx-" }, + { adns_r_rp_raw, "rp-" }, + + { adns_r_none, 0 } + }; + + const struct typename *tnp; + + for (tnp=typenames; + tnp->type && strcmp(arg,tnp->desc); + tnp++); + if (!tnp->type) usageerr("unknown RR type %s",arg); + ov_type= tnp->type; +} + +int rcode; + +static void process_optarg(const char *arg, + const char *const **argv_p, + const char *value) { + const struct optioninfo *oip; + int invert; + + if (arg[0] == '-' || arg[0] == '+') { + if (arg[0] == '-' && arg[1] == '-') { + if (!strncmp(arg,"--no-",5)) { + invert= 1; + oip= opt_findl(arg+5); + } else { + invert= 0; + oip= opt_findl(arg+2); + } + if (oip->type == ot_funcarg) { + arg= argv_p ? *++(*argv_p) : value; + if (!arg) usageerr("option --%s requires a value argument",oip->lopt); + } else { + if (value) usageerr("option --%s does not take a value",oip->lopt); + arg= 0; + } + opt_do(oip,arg,invert); + } else if (arg[0] == '-' && arg[1] == 0) { + arg= argv_p ? *++(*argv_p) : value; + if (!arg) usageerr("option `-' must be followed by a domain"); + query_do(arg); + } else { /* arg[1] != '-', != '\0' */ + invert= (arg[0] == '+'); + ++arg; + while (*arg) { + oip= opt_finds(&arg); + if (oip->type == ot_funcarg) { + if (!*arg) { + arg= argv_p ? *++(*argv_p) : value; + if (!arg) usageerr("option -%s requires a value argument",oip->sopt); + } else { + if (value) usageerr("two values for option -%s given !",oip->sopt); + } + opt_do(oip,arg,invert); + arg= ""; + } else { + if (value) usageerr("option -%s does not take a value",oip->sopt); + opt_do(oip,0,invert); + } + } + } + } else { /* arg[0] != '-' */ + query_do(arg); + } +} + +static void read_stdin(void) { + static int used, avail; + static char *buf; + + int anydone, r; + char *newline, *space; + + anydone= 0; + while (!anydone || used) { + while (!(newline= memchr(buf,'\n',used))) { + if (used == avail) { + avail += 20; avail <<= 1; + buf= realloc(buf,avail); + if (!buf) sysfail("realloc stdin buffer",errno); + } + do { + r= read(0,buf+used,avail-used); + } while (r < 0 && errno == EINTR); + if (r == 0) { + if (used) { + /* fake up final newline */ + buf[used++]= '\n'; + r= 1; + } else { + ov_pipe= 0; + return; + } + } + if (r < 0) sysfail("read stdin",errno); + used += r; + } + *newline++= 0; + space= strchr(buf,' '); + if (space) *space++= 0; + process_optarg(buf,0,space); + used -= (newline-buf); + memmove(buf,newline,used); + anydone= 1; + } +} + +int main(int argc, const char *const *argv) { + struct timeval *tv, tvbuf; + adns_query qu; + void *qun_v; + adns_answer *answer; + int r, maxfd; + fd_set readfds, writefds, exceptfds; + const char *arg; + + while ((arg= *++argv)) process_optarg(arg,&argv,0); + + if (!ov_pipe && !ads) usageerr("no domains given, and -f/--pipe not used; try --help"); + + ensure_adns_init(); + + for (;;) { + for (;;) { + qu= ov_asynch ? 0 : outstanding.head ? outstanding.head->qu : 0; + r= adns_check(ads,&qu,&answer,&qun_v); + if (r == EAGAIN) break; + if (r == ESRCH) { if (!ov_pipe) goto x_quit; else break; } + assert(!r); + query_done(qun_v,answer); + } + maxfd= 0; + FD_ZERO(&readfds); + FD_ZERO(&writefds); + FD_ZERO(&exceptfds); + if (ov_pipe) { + maxfd= 1; + FD_SET(0,&readfds); + } + tv= 0; + adns_beforeselect(ads, &maxfd, &readfds,&writefds,&exceptfds, &tv,&tvbuf,0); + r= select(maxfd, &readfds,&writefds,&exceptfds, tv); + if (r == -1) { + if (errno == EINTR) continue; + sysfail("select",errno); + } + adns_afterselect(ads, maxfd, &readfds,&writefds,&exceptfds, 0); + if (ov_pipe && FD_ISSET(0,&readfds)) read_stdin(); + } +x_quit: + if (fclose(stdout)) outerr(); + exit(rcode); +} -- cgit v1.2.3