ref: 45e2b4dfe9570aefe3e5f2a8b7af956b7365f522
dir: /sys/src/cmd/ndb/dnsgetip.c/
/* one-shot resolver */ #include <u.h> #include <libc.h> #include <bio.h> #include <ndb.h> #include "dns.h" Cfg cfg; char *dbfile; int debug = 0; char *logfile = "dnsgetip"; int maxage = 60*60; char mntpt[Maxpath]; int needrefresh = 0; ulong now = 0; vlong nowns = 0; int testing = 0; int traceactivity = 0; char *zonerefreshprogram; int aflag; void resolve(char *name, int type) { Request req; RR *rp; memset(&req, 0, sizeof req); getactivity(&req, 0); req.isslave = 1; req.aborttime = NS2MS(nowns) + Maxreqtm; rp = dnresolve(name, Cin, type, &req, 0, 0, Recurse, 0, 0); rrremneg(&rp); while(rp != nil){ print("%s\n", rp->ip->name); if(!aflag) exits(nil); rp = rp->next; } } void usage(void) { fprint(2, "%s: [-adx] domain\n", argv0); exits("usage"); } void main(int argc, char **argv) { strcpy(mntpt, "/net"); cfg.inside = 1; cfg.resolver = 1; ARGBEGIN{ case 'a': aflag = 1; break; case 'd': debug++; break; case 'x': strcpy(mntpt, "/net.alt"); break; default: usage(); }ARGEND if(argc != 1) usage(); if(strcmp(ipattr(*argv), "ip") == 0) print("%s\n", *argv); else { dninit(); resolve(*argv, Ta); resolve(*argv, Taaaa); } exits(nil); } RR* getdnsservers(int class) { return dnsservers(class); } /* stubs */ void syslog(int, char*, char*, ...){} void logreply(int, uchar*, DNSmsg*){} void logsend(int, int, uchar*, char*, char*, int){}