sys/src/cmd/ndb/dnsgetip.c

   1 /* one-shot resolver */
   2 #include <u.h>
   3 #include <libc.h>
   4 #include <bio.h>
   5 #include <ndb.h>
   6 #include "dns.h"
   7
   8 Cfg cfg;
   9 char *dbfile;
  10 int debug               = 0;
  11 char *logfile           = "dnsgetip";
  12 int     maxage          = 60*60;
  13 char mntpt[Maxpath];
  14 int     needrefresh     = 0;
  15 ulong   now             = 0;
  16 vlong   nowns           = 0;
  17 int     testing         = 0;
  18 int     traceactivity   = 0;
  19 char    *zonerefreshprogram;
  20
  21 int aflag;
  22
  23 void
  24 resolve(char *name, int type)
  25 {
  26         Request req;
  27         RR *rp;
  28
  29         memset(&req, 0, sizeof req);
  30         getactivity(&req, 0);
  31         req.isslave = 1;
  32         req.aborttime = NS2MS(nowns) + Maxreqtm;
  33
  34         rp = dnresolve(name, Cin, type, &req, 0, 0, Recurse, 0, 0);
  35         rrremneg(&rp);
  36         while(rp != nil){
  37                 print("%s\n", rp->ip->name);
  38                 if(!aflag)
  39                         exits(nil);
  40                 rp = rp->next;
  41         }
  42 }
  43
  44 void
  45 usage(void)
  46 {
  47         fprint(2, "%s: [-adx] domain\n", argv0);
  48         exits("usage");
  49 }
  50
  51 void
  52 main(int argc, char **argv)
  53 {
  54         strcpy(mntpt, "/net");
  55         cfg.inside = 1;
  56         cfg.resolver = 1;
  57
  58         ARGBEGIN{
  59         case 'a':
  60                 aflag = 1;
  61                 break;
  62         case 'd':
  63                 debug++;
  64                 break;
  65         case 'x':
  66                 strcpy(mntpt, "/net.alt");
  67                 break;
  68         default:
  69                 usage();
  70         }ARGEND
  71
  72         if(argc != 1)
  73                 usage();
  74
  75         if(strcmp(ipattr(*argv), "ip") == 0)
  76                 print("%s\n", *argv);
  77         else {
  78                 dninit();
  79                 resolve(*argv, Ta);
  80                 resolve(*argv, Taaaa);
  81         }
  82         exits(nil);
  83 }
  84
  85 RR*
  86 getdnsservers(int class)
  87 {
  88         return dnsservers(class);
  89 }
  90
  91 /* stubs */
  92 void syslog(int, char*, char*, ...){}
  93 void logreply(int, uchar*, DNSmsg*){}
  94 void logsend(int, int, uchar*, char*, char*, int){}