mdw@git.distorted.org.uk Git - adns/blob - client/adnstest.c

   1 /*
   2  * dtest.c
   3  * - simple test program, not part of the library
   4  */
   5 /*
   6  *  This file is part of adns, which is Copyright (C) 1997-1999 Ian Jackson
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2, or (at your option)
  11  *  any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software Foundation,
  20  *  Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  21  */
  22
  23 #include <stdio.h>
  24 #include <sys/time.h>
  25 #include <unistd.h>
  26 #include <assert.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29 #include <errno.h>
  30
  31 #include "adns.h"
  32
  33 #include "config.h"
  34
  35 #ifndef OUTPUTSTREAM
  36 # define OUTPUTSTREAM stdout
  37 #endif
  38
  39 #ifndef HAVE_POLL
  40 #undef poll
  41 int poll(struct pollfd *ufds, int nfds, int timeout) {
  42   fputs("poll(2) not supported on this system\n",stderr);
  43   exit(3);
  44 }
  45 #define adns_beforepoll(a,b,c,d,e) 0
  46 #define adns_afterpoll(a,b,c,d) 0
  47 #endif
  48
  49 static void failure_status(const char *what, adns_status st) {
  50   fprintf(stderr,"adns failure: %s: %s\n",what,adns_strerror(st));
  51   exit(2);
  52 }
  53
  54 static void failure_errno(const char *what, int errnoval) {
  55   fprintf(stderr,"adns failure: %s: errno=%d\n",what,errnoval);
  56   exit(2);
  57 }
  58
  59 static const char *defaultargv[]= { "ns.chiark.greenend.org.uk", 0 };
  60
  61 static const adns_rrtype defaulttypes[]= {
  62   adns_r_a,
  63   adns_r_ns_raw,
  64   adns_r_cname,
  65   adns_r_soa_raw,
  66   adns_r_ptr_raw,
  67   adns_r_hinfo,
  68   adns_r_mx_raw,
  69   adns_r_txt,
  70   adns_r_rp_raw,
  71
  72   adns_r_addr,
  73   adns_r_ns,
  74   adns_r_ptr,
  75   adns_r_mx,
  76
  77   adns_r_soa,
  78   adns_r_rp,
  79
  80   adns_r_none
  81 };
  82
  83 static void dumptype(adns_status ri, const char *rrtn, const char *fmtn) {
  84   fprintf(stdout, "%s(%s)%s%s",
  85           ri ? "?" : rrtn, ri ? "?" : fmtn ? fmtn : "-",
  86           ri ? " " : "", ri ? adns_strerror(ri) : "");
  87 }
  88
  89 static void fdom_split(const char *fdom, const char **dom_r, int *qf_r,
  90                        char *ownflags, int ownflags_l) {
  91   int qf;
  92   char *ep;
  93
  94   qf= strtoul(fdom,&ep,0);
  95   if (*ep == ',' && strchr(ep,'/')) {
  96     ep++;
  97     while (*ep != '/') {
  98       if (--ownflags_l <= 0) { fputs("too many flags\n",stderr); exit(3); }
  99       *ownflags++= *ep++;
 100     }
 101   }
 102   if (*ep != '/') { *dom_r= fdom; *qf_r= 0; }
 103   else { *dom_r= ep+1; *qf_r= qf; }
 104   *ownflags= 0;
 105 }
 106
 107 static int consistsof(const char *string, const char *accept) {
 108   return strspn(string,accept) == strlen(string);
 109 }
 110
 111 int main(int argc, char *const *argv) {
 112   struct myctx {
 113     adns_query qu;
 114     int doneyet, found;
 115     const char *fdom;
 116   };
 117
 118   adns_state ads;
 119   adns_query qu;
 120   struct myctx *mcs, *mc, *mcw;
 121   void *mcr;
 122   adns_answer *ans;
 123   const char *initstring, *rrtn, *fmtn;
 124   const char *const *fdomlist, *domain;
 125   char *show, *cp;
 126   int len, i, qc, qi, tc, ti, ch, qflags, initflagsnum, npollfds, npollfdsavail, timeout;
 127   struct pollfd *pollfds;
 128   adns_status r, ri;
 129   const adns_rrtype *types;
 130   struct timeval now;
 131   adns_rrtype *types_a;
 132   char ownflags[10];
 133   char *ep;
 134   const char *initflags, *owninitflags;
 135
 136   if (argv[0] && argv[1] && argv[1][0] == '-') {
 137     initflags= argv[1]+1;
 138     argv++;
 139   } else {
 140     initflags= "";
 141   }
 142   if (argv[0] && argv[1] && argv[1][0] == '/') {
 143     initstring= argv[1]+1;
 144     argv++;
 145   } else {
 146     initstring= 0;
 147   }
 148
 149   initflagsnum= strtoul(initflags,&ep,0);
 150   if (*ep == ',') {
 151     owninitflags= ep+1;
 152     if (!consistsof(owninitflags,"ps")) {
 153       fputs("unknown owninitflag\n",stderr);
 154       exit(4);
 155     }
 156   } else if (!*ep) {
 157     owninitflags= "";
 158   } else {
 159     fputs("bad <initflagsnum>[,<owninitflags>]\n",stderr);
 160     exit(4);
 161   }
 162
 163   if (argv[0] && argv[1] && argv[1][0] == ':') {
 164     for (cp= argv[1]+1, tc=1; (ch= *cp); cp++)
 165       if (ch==',') tc++;
 166     types_a= malloc(sizeof(*types_a)*(tc+1));
 167     if (!types_a) { perror("malloc types"); exit(3); }
 168     for (cp= argv[1]+1, ti=0; ti<tc; ti++) {
 169       types_a[ti]= strtoul(cp,&cp,10);
 170       if ((ch= *cp)) {
 171         if (ch != ',') {
 172           fputs("usage: adnstest [-<initflagsnum>[,<owninitflags>]] [/<initstring>]\n"
 173                 "              [ :<typenum>,... ]\n"
 174                 "              [ [<queryflagsnum>[,<ownqueryflags>]/]<domain> ... ]\n"
 175                 "initflags:   p  use poll(2) instead of select(2)\n"
 176                 "             s  use adns_wait with specified query, instead of 0\n"
 177                 "queryflags:  a  print status abbrevs instead of strings\n",
 178                 stderr);
 179           exit(4);
 180         }
 181         cp++;
 182       }
 183     }
 184     *cp++= adns_r_none;
 185     types= types_a;
 186     argv++;
 187   } else {
 188     types= defaulttypes;
 189   }
 190
 191   if (argv[0] && argv[1]) fdomlist= (const char *const*)argv+1;
 192   else fdomlist= defaultargv;
 193
 194   for (qc=0; fdomlist[qc]; qc++);
 195   for (tc=0; types[tc] != adns_r_none; tc++);
 196   mcs= malloc(sizeof(*mcs)*qc*tc);
 197   if (!mcs) { perror("malloc mcs"); exit(3); }
 198
 199   if (initstring) {
 200     r= adns_init_strcfg(&ads,
 201                         (adns_if_debug|adns_if_noautosys)^initflagsnum,
 202                         stdout,initstring);
 203   } else {
 204     r= adns_init(&ads,
 205                  (adns_if_debug|adns_if_noautosys)^initflagsnum,
 206                  0);
 207   }
 208   if (r) failure_errno("init",r);
 209
 210   npollfdsavail= 0;
 211   pollfds= 0;
 212
 213   for (qi=0; qi<qc; qi++) {
 214     fdom_split(fdomlist[qi],&domain,&qflags,ownflags,sizeof(ownflags));
 215     if (!consistsof(ownflags,"a")) {
 216       fputs("unknown ownqueryflag\n",stderr);
 217       exit(4);
 218     }
 219     for (ti=0; ti<tc; ti++) {
 220       mc= &mcs[qi*tc+ti];
 221       mc->doneyet= 0;
 222       mc->fdom= fdomlist[qi];
 223
 224       fprintf(stdout,"%s flags %d type %d",domain,qflags,types[ti]);
 225       r= adns_submit(ads,domain,types[ti],qflags,mc,&mc->qu);
 226       if (r == adns_s_unknownrrtype) {
 227         fprintf(stdout," not implemented\n");
 228         mc->qu= 0;
 229         mc->doneyet= 1;
 230       } else if (r) {
 231         failure_errno("submit",r);
 232       } else {
 233         ri= adns_rr_info(types[ti], &rrtn,&fmtn,0, 0,0);
 234         putc(' ',stdout);
 235         dumptype(ri,rrtn,fmtn);
 236         fprintf(stdout," submitted\n");
 237       }
 238     }
 239   }
 240
 241   for (;;) {
 242     for (qi=0; qi<qc; qi++) {
 243       for (ti=0; ti<tc; ti++) {
 244         mc= &mcs[qi*tc+ti];
 245         mc->found= 0;
 246       }
 247     }
 248     for (adns_forallqueries_begin(ads);
 249          (qu= adns_forallqueries_next(ads,&mcr));
 250          ) {
 251       mc= mcr;
 252       assert(qu == mc->qu);
 253       assert(!mc->doneyet);
 254       mc->found= 1;
 255     }
 256     mcw= 0;
 257     for (qi=0; qi<qc; qi++) {
 258       for (ti=0; ti<tc; ti++) {
 259         mc= &mcs[qi*tc+ti];
 260         if (mc->doneyet) continue;
 261         assert(mc->found);
 262         if (!mcw) mcw= mc;
 263       }
 264     }
 265     if (!mcw) break;
 266
 267     if (strchr(owninitflags,'s')) {
 268       qu= mcw->qu;
 269       mc= mcw;
 270     } else {
 271       qu= 0;
 272       mc= 0;
 273     }
 274
 275     if (strchr(owninitflags,'p')) {
 276       for (;;) {
 277         r= adns_check(ads,&qu,&ans,&mcr);
 278         if (r != EWOULDBLOCK) break;
 279         for (;;) {
 280           npollfds= npollfdsavail;
 281           timeout= -1;
 282           r= adns_beforepoll(ads, pollfds, &npollfds, &timeout, 0);
 283           if (r != ERANGE) break;
 284           pollfds= realloc(pollfds,sizeof(*pollfds)*npollfds);
 285           if (!pollfds) failure_errno("realloc pollfds",errno);
 286           npollfdsavail= npollfds;
 287         }
 288         if (r) failure_errno("beforepoll",r);
 289         r= poll(pollfds,npollfds,timeout);
 290         if (r == -1) failure_errno("poll",errno);
 291         adns_afterpoll(ads,pollfds, r?npollfds:0, 0);
 292       }
 293     } else {
 294       r= adns_wait(ads,&qu,&ans,&mcr);
 295     }
 296     if (r) failure_errno("wait/check",r);
 297
 298     if (mc) assert(mcr==mc);
 299     else mc= mcr;
 300     assert(qu==mc->qu);
 301     assert(!mc->doneyet);
 302
 303     fdom_split(mc->fdom,&domain,&qflags,ownflags,sizeof(ownflags));
 304
 305     if (gettimeofday(&now,0)) { perror("gettimeofday"); exit(3); }
 306
 307     ri= adns_rr_info(ans->type, &rrtn,&fmtn,&len, 0,0);
 308     fprintf(stdout, "%s flags %d type ",domain,qflags);
 309     dumptype(ri,rrtn,fmtn);
 310     fprintf(stdout, "%s%s: %s; nrrs=%d; cname=%s; owner=%s; ttl=%ld\n",
 311             ownflags[0] ? " ownflags=" : "", ownflags,
 312             strchr(ownflags,'a')
 313             ? adns_errabbrev(ans->status)
 314             : adns_strerror(ans->status),
 315             ans->nrrs,
 316             ans->cname ? ans->cname : "$",
 317             ans->owner ? ans->owner : "$",
 318             (long)ans->expires - (long)now.tv_sec);
 319     if (ans->nrrs) {
 320       assert(!ri);
 321       for (i=0; i<ans->nrrs; i++) {
 322         r= adns_rr_info(ans->type, 0,0,0, ans->rrs.bytes + i*len, &show);
 323         if (r) failure_status("info",r);
 324         fprintf(stdout," %s\n",show);
 325         free(show);
 326       }
 327     }
 328     free(ans);
 329
 330     mc->doneyet= 1;
 331   }
 332
 333   free(mcs);
 334   adns_finish(ads);
 335
 336   exit(0);
 337 }