1 3e0d8fb3 2005-12-27 devnull #include <u.h>
  2 3e0d8fb3 2005-12-27 devnull #include <libc.h>
  3 3e0d8fb3 2005-12-27 devnull #include <ip.h>
  4 3e0d8fb3 2005-12-27 devnull #include "dns.h"
  5 3e0d8fb3 2005-12-27 devnull 
  6 3e0d8fb3 2005-12-27 devnull enum
  7 3e0d8fb3 2005-12-27 devnull {
  8 3e0d8fb3 2005-12-27 devnull 	Maxpath=		128,
  9 3e0d8fb3 2005-12-27 devnull };
 10 3e0d8fb3 2005-12-27 devnull 
 11 3e0d8fb3 2005-12-27 devnull char	*logfile = "dns";
 12 3e0d8fb3 2005-12-27 devnull char	*dbfile;
 13 3e0d8fb3 2005-12-27 devnull int	debug;
 14 3e0d8fb3 2005-12-27 devnull int	cachedb = 1;
 15 3e0d8fb3 2005-12-27 devnull int	testing;
 16 3e0d8fb3 2005-12-27 devnull int traceactivity;
 17 3e0d8fb3 2005-12-27 devnull int	needrefresh;
 18 3e0d8fb3 2005-12-27 devnull int 	resolver;
 19 3e0d8fb3 2005-12-27 devnull char	mntpt[Maxpath];
 20 3e0d8fb3 2005-12-27 devnull char	*caller = "";
 21 3e0d8fb3 2005-12-27 devnull ulong	now;
 22 3e0d8fb3 2005-12-27 devnull int	maxage;
 23 3e0d8fb3 2005-12-27 devnull uchar	ipaddr[IPaddrlen];	/* my ip address */
 24 3e0d8fb3 2005-12-27 devnull char	*LOG;
 25 3e0d8fb3 2005-12-27 devnull char	*zonerefreshprogram;
 26 3e0d8fb3 2005-12-27 devnull 
 27 3e0d8fb3 2005-12-27 devnull static int	readmsg(int, uchar*, int);
 28 3e0d8fb3 2005-12-27 devnull static void	reply(int, DNSmsg*, Request*);
 29 3e0d8fb3 2005-12-27 devnull static void	dnzone(DNSmsg*, DNSmsg*, Request*);
 30 3e0d8fb3 2005-12-27 devnull static void	getcaller(char*);
 31 3e0d8fb3 2005-12-27 devnull static void	refreshmain(char*);
 32 3e0d8fb3 2005-12-27 devnull 
 33 3e0d8fb3 2005-12-27 devnull void
 34 3e0d8fb3 2005-12-27 devnull main(int argc, char *argv[])
 35 3e0d8fb3 2005-12-27 devnull {
 36 3e0d8fb3 2005-12-27 devnull 	int len;
 37 3e0d8fb3 2005-12-27 devnull 	Request req;
 38 3e0d8fb3 2005-12-27 devnull 	DNSmsg reqmsg, repmsg;
 39 3e0d8fb3 2005-12-27 devnull 	uchar buf[512];
 40 3e0d8fb3 2005-12-27 devnull 	char tname[32];
 41 3e0d8fb3 2005-12-27 devnull 	char *err;
 42 3e0d8fb3 2005-12-27 devnull 	char *ext = "";
 43 3e0d8fb3 2005-12-27 devnull 
 44 3e0d8fb3 2005-12-27 devnull 	ARGBEGIN{
 45 3e0d8fb3 2005-12-27 devnull 	case 'd':
 46 3e0d8fb3 2005-12-27 devnull 		debug++;
 47 3e0d8fb3 2005-12-27 devnull 		break;
 48 3e0d8fb3 2005-12-27 devnull 	case 'f':
 49 3e0d8fb3 2005-12-27 devnull 		dbfile = ARGF();
 50 3e0d8fb3 2005-12-27 devnull 		break;
 51 3e0d8fb3 2005-12-27 devnull 	case 'r':
 52 3e0d8fb3 2005-12-27 devnull 		resolver = 1;
 53 3e0d8fb3 2005-12-27 devnull 		break;
 54 3e0d8fb3 2005-12-27 devnull 	case 'x':
 55 3e0d8fb3 2005-12-27 devnull 		ext = ARGF();
 56 3e0d8fb3 2005-12-27 devnull 		break;
 57 3e0d8fb3 2005-12-27 devnull 	}ARGEND
 58 3e0d8fb3 2005-12-27 devnull 
 59 3e0d8fb3 2005-12-27 devnull 	if(debug < 2)
 60 3e0d8fb3 2005-12-27 devnull 		debug = 0;
 61 3e0d8fb3 2005-12-27 devnull 
 62 3e0d8fb3 2005-12-27 devnull 	if(argc > 0)
 63 3e0d8fb3 2005-12-27 devnull 		getcaller(argv[0]);
 64 3e0d8fb3 2005-12-27 devnull 
 65 3e0d8fb3 2005-12-27 devnull 	dninit();
 66 3e0d8fb3 2005-12-27 devnull 
 67 3e0d8fb3 2005-12-27 devnull 	snprint(mntpt, sizeof(mntpt), "/net%s", ext);
 68 3e0d8fb3 2005-12-27 devnull 	if(myipaddr(ipaddr, mntpt) < 0)
 69 3e0d8fb3 2005-12-27 devnull 		sysfatal("can't read my ip address");
 70 3e0d8fb3 2005-12-27 devnull 	syslog(0, logfile, "dnstcp call from %s to %I", caller, ipaddr);
 71 3e0d8fb3 2005-12-27 devnull 
 72 3e0d8fb3 2005-12-27 devnull 	db2cache(1);
 73 3e0d8fb3 2005-12-27 devnull 
 74 3e0d8fb3 2005-12-27 devnull 	setjmp(req.mret);
 75 3e0d8fb3 2005-12-27 devnull 	req.isslave = 0;
 76 3e0d8fb3 2005-12-27 devnull 
 77 3e0d8fb3 2005-12-27 devnull 	/* loop on requests */
 78 3e0d8fb3 2005-12-27 devnull 	for(;; putactivity()){
 79 3e0d8fb3 2005-12-27 devnull 		now = time(0);
 80 3e0d8fb3 2005-12-27 devnull 		memset(&repmsg, 0, sizeof(repmsg));
 81 3e0d8fb3 2005-12-27 devnull 		alarm(10*60*1000);
 82 3e0d8fb3 2005-12-27 devnull 		len = readmsg(0, buf, sizeof(buf));
 83 3e0d8fb3 2005-12-27 devnull 		alarm(0);
 84 3e0d8fb3 2005-12-27 devnull 		if(len <= 0)
 85 3e0d8fb3 2005-12-27 devnull 			break;
 86 3e0d8fb3 2005-12-27 devnull 		getactivity(&req);
 87 3e0d8fb3 2005-12-27 devnull 		req.aborttime = now + 15*Min;
 88 3e0d8fb3 2005-12-27 devnull 		err = convM2DNS(buf, len, &reqmsg);
 89 3e0d8fb3 2005-12-27 devnull 		if(err){
 90 3e0d8fb3 2005-12-27 devnull 			syslog(0, logfile, "server: input error: %s from %I", err, buf);
 91 3e0d8fb3 2005-12-27 devnull 			break;
 92 3e0d8fb3 2005-12-27 devnull 		}
 93 3e0d8fb3 2005-12-27 devnull 		if(reqmsg.qdcount < 1){
 94 3e0d8fb3 2005-12-27 devnull 			syslog(0, logfile, "server: no questions from %I", buf);
 95 3e0d8fb3 2005-12-27 devnull 			break;
 96 3e0d8fb3 2005-12-27 devnull 		}
 97 3e0d8fb3 2005-12-27 devnull 		if(reqmsg.flags & Fresp){
 98 3e0d8fb3 2005-12-27 devnull 			syslog(0, logfile, "server: reply not request from %I", buf);
 99 3e0d8fb3 2005-12-27 devnull 			break;
100 3e0d8fb3 2005-12-27 devnull 		}
101 3e0d8fb3 2005-12-27 devnull 		if((reqmsg.flags & Omask) != Oquery){
102 3e0d8fb3 2005-12-27 devnull 			syslog(0, logfile, "server: op %d from %I", reqmsg.flags & Omask, buf);
103 3e0d8fb3 2005-12-27 devnull 			break;
104 3e0d8fb3 2005-12-27 devnull 		}
105 3e0d8fb3 2005-12-27 devnull 
106 3e0d8fb3 2005-12-27 devnull 		if(debug)
107 3e0d8fb3 2005-12-27 devnull 			syslog(0, logfile, "%d: serve (%s) %d %s %s",
108 3e0d8fb3 2005-12-27 devnull 				req.id, caller,
109 3e0d8fb3 2005-12-27 devnull 				reqmsg.id,
110 3e0d8fb3 2005-12-27 devnull 				reqmsg.qd->owner->name,
111 3e0d8fb3 2005-12-27 devnull 				rrname(reqmsg.qd->type, tname, sizeof tname));
112 3e0d8fb3 2005-12-27 devnull 
113 3e0d8fb3 2005-12-27 devnull 		/* loop through each question */
114 3e0d8fb3 2005-12-27 devnull 		while(reqmsg.qd){
115 3e0d8fb3 2005-12-27 devnull 			if(reqmsg.qd->type == Taxfr){
116 3e0d8fb3 2005-12-27 devnull 				dnzone(&reqmsg, &repmsg, &req);
117 3e0d8fb3 2005-12-27 devnull 			} else {
118 3e0d8fb3 2005-12-27 devnull 				dnserver(&reqmsg, &repmsg, &req);
119 3e0d8fb3 2005-12-27 devnull 				reply(1, &repmsg, &req);
120 3e0d8fb3 2005-12-27 devnull 				rrfreelist(repmsg.qd);
121 3e0d8fb3 2005-12-27 devnull 				rrfreelist(repmsg.an);
122 3e0d8fb3 2005-12-27 devnull 				rrfreelist(repmsg.ns);
123 3e0d8fb3 2005-12-27 devnull 				rrfreelist(repmsg.ar);
124 3e0d8fb3 2005-12-27 devnull 			}
125 3e0d8fb3 2005-12-27 devnull 		}
126 3e0d8fb3 2005-12-27 devnull 
127 3e0d8fb3 2005-12-27 devnull 		rrfreelist(reqmsg.qd);
128 3e0d8fb3 2005-12-27 devnull 		rrfreelist(reqmsg.an);
129 3e0d8fb3 2005-12-27 devnull 		rrfreelist(reqmsg.ns);
130 3e0d8fb3 2005-12-27 devnull 		rrfreelist(reqmsg.ar);
131 3e0d8fb3 2005-12-27 devnull 
132 3e0d8fb3 2005-12-27 devnull 		if(req.isslave){
133 3e0d8fb3 2005-12-27 devnull 			putactivity();
134 3e0d8fb3 2005-12-27 devnull 			_exits(0);
135 3e0d8fb3 2005-12-27 devnull 		}
136 3e0d8fb3 2005-12-27 devnull 	}
137 3e0d8fb3 2005-12-27 devnull 	refreshmain(mntpt);
138 3e0d8fb3 2005-12-27 devnull }
139 3e0d8fb3 2005-12-27 devnull 
140 3e0d8fb3 2005-12-27 devnull static int
141 3e0d8fb3 2005-12-27 devnull readmsg(int fd, uchar *buf, int max)
142 3e0d8fb3 2005-12-27 devnull {
143 3e0d8fb3 2005-12-27 devnull 	int n;
144 3e0d8fb3 2005-12-27 devnull 	uchar x[2];
145 3e0d8fb3 2005-12-27 devnull 
146 3e0d8fb3 2005-12-27 devnull 	if(readn(fd, x, 2) != 2)
147 3e0d8fb3 2005-12-27 devnull 		return -1;
148 3e0d8fb3 2005-12-27 devnull 	n = (x[0]<<8) | x[1];
149 3e0d8fb3 2005-12-27 devnull 	if(n > max)
150 3e0d8fb3 2005-12-27 devnull 		return -1;
151 3e0d8fb3 2005-12-27 devnull 	if(readn(fd, buf, n) != n)
152 3e0d8fb3 2005-12-27 devnull 		return -1;
153 3e0d8fb3 2005-12-27 devnull 	return n;
154 3e0d8fb3 2005-12-27 devnull }
155 3e0d8fb3 2005-12-27 devnull 
156 3e0d8fb3 2005-12-27 devnull static void
157 3e0d8fb3 2005-12-27 devnull reply(int fd, DNSmsg *rep, Request *req)
158 3e0d8fb3 2005-12-27 devnull {
159 3e0d8fb3 2005-12-27 devnull 	int len, rv;
160 3e0d8fb3 2005-12-27 devnull 	char tname[32];
161 3e0d8fb3 2005-12-27 devnull 	uchar buf[4096];
162 3e0d8fb3 2005-12-27 devnull 	RR *rp;
163 3e0d8fb3 2005-12-27 devnull 
164 3e0d8fb3 2005-12-27 devnull 	if(debug){
165 3e0d8fb3 2005-12-27 devnull 		syslog(0, logfile, "%d: reply (%s) %s %s %ux",
166 3e0d8fb3 2005-12-27 devnull 			req->id, caller,
167 3e0d8fb3 2005-12-27 devnull 			rep->qd->owner->name,
168 3e0d8fb3 2005-12-27 devnull 			rrname(rep->qd->type, tname, sizeof tname),
169 3e0d8fb3 2005-12-27 devnull 			rep->flags);
170 3e0d8fb3 2005-12-27 devnull 		for(rp = rep->an; rp; rp = rp->next)
171 3e0d8fb3 2005-12-27 devnull 			syslog(0, logfile, "an %R", rp);
172 3e0d8fb3 2005-12-27 devnull 		for(rp = rep->ns; rp; rp = rp->next)
173 3e0d8fb3 2005-12-27 devnull 			syslog(0, logfile, "ns %R", rp);
174 3e0d8fb3 2005-12-27 devnull 		for(rp = rep->ar; rp; rp = rp->next)
175 3e0d8fb3 2005-12-27 devnull 			syslog(0, logfile, "ar %R", rp);
176 3e0d8fb3 2005-12-27 devnull 	}
177 3e0d8fb3 2005-12-27 devnull 
178 3e0d8fb3 2005-12-27 devnull 
179 3e0d8fb3 2005-12-27 devnull 	len = convDNS2M(rep, buf+2, sizeof(buf) - 2);
180 3e0d8fb3 2005-12-27 devnull 	if(len <= 0)
181 3e0d8fb3 2005-12-27 devnull 		abort(); /* "dnserver: converting reply" */;
182 3e0d8fb3 2005-12-27 devnull 	buf[0] = len>>8;
183 3e0d8fb3 2005-12-27 devnull 	buf[1] = len;
184 3e0d8fb3 2005-12-27 devnull 	rv = write(fd, buf, len+2);
185 3e0d8fb3 2005-12-27 devnull 	if(rv != len+2){
186 3e0d8fb3 2005-12-27 devnull 		syslog(0, logfile, "sending reply: %d instead of %d", rv, len+2);
187 3e0d8fb3 2005-12-27 devnull 		exits(0);
188 3e0d8fb3 2005-12-27 devnull 	}
189 3e0d8fb3 2005-12-27 devnull }
190 3e0d8fb3 2005-12-27 devnull 
191 3e0d8fb3 2005-12-27 devnull /*
192 3e0d8fb3 2005-12-27 devnull  *  Hash table for domain names.  The hash is based only on the
193 3e0d8fb3 2005-12-27 devnull  *  first element of the domain name.
194 3e0d8fb3 2005-12-27 devnull  */
195 3e0d8fb3 2005-12-27 devnull extern DN	*ht[HTLEN];
196 3e0d8fb3 2005-12-27 devnull 
197 3e0d8fb3 2005-12-27 devnull static int
198 3e0d8fb3 2005-12-27 devnull numelem(char *name)
199 3e0d8fb3 2005-12-27 devnull {
200 3e0d8fb3 2005-12-27 devnull 	int i;
201 3e0d8fb3 2005-12-27 devnull 
202 3e0d8fb3 2005-12-27 devnull 	i = 1;
203 3e0d8fb3 2005-12-27 devnull 	for(; *name; name++)
204 3e0d8fb3 2005-12-27 devnull 		if(*name == '.')
205 3e0d8fb3 2005-12-27 devnull 			i++;
206 3e0d8fb3 2005-12-27 devnull 	return i;
207 3e0d8fb3 2005-12-27 devnull }
208 3e0d8fb3 2005-12-27 devnull 
209 3e0d8fb3 2005-12-27 devnull int
210 3e0d8fb3 2005-12-27 devnull inzone(DN *dp, char *name, int namelen, int depth)
211 3e0d8fb3 2005-12-27 devnull {
212 3e0d8fb3 2005-12-27 devnull 	int n;
213 3e0d8fb3 2005-12-27 devnull 
214 3e0d8fb3 2005-12-27 devnull 	if(dp->name == 0)
215 3e0d8fb3 2005-12-27 devnull 		return 0;
216 3e0d8fb3 2005-12-27 devnull 	if(numelem(dp->name) != depth)
217 3e0d8fb3 2005-12-27 devnull 		return 0;
218 3e0d8fb3 2005-12-27 devnull 	n = strlen(dp->name);
219 3e0d8fb3 2005-12-27 devnull 	if(n < namelen)
220 3e0d8fb3 2005-12-27 devnull 		return 0;
221 3e0d8fb3 2005-12-27 devnull 	if(strcmp(name, dp->name + n - namelen) != 0)
222 3e0d8fb3 2005-12-27 devnull 		return 0;
223 3e0d8fb3 2005-12-27 devnull 	if(n > namelen && dp->name[n - namelen - 1] != '.')
224 3e0d8fb3 2005-12-27 devnull 		return 0;
225 3e0d8fb3 2005-12-27 devnull 	return 1;
226 3e0d8fb3 2005-12-27 devnull }
227 3e0d8fb3 2005-12-27 devnull 
228 3e0d8fb3 2005-12-27 devnull static void
229 3e0d8fb3 2005-12-27 devnull dnzone(DNSmsg *reqp, DNSmsg *repp, Request *req)
230 3e0d8fb3 2005-12-27 devnull {
231 3e0d8fb3 2005-12-27 devnull 	DN *dp, *ndp;
232 3e0d8fb3 2005-12-27 devnull 	RR r, *rp;
233 3e0d8fb3 2005-12-27 devnull 	int h, depth, found, nlen;
234 3e0d8fb3 2005-12-27 devnull 
235 3e0d8fb3 2005-12-27 devnull 	memset(repp, 0, sizeof(*repp));
236 3e0d8fb3 2005-12-27 devnull 	repp->id = reqp->id;
237 3e0d8fb3 2005-12-27 devnull 	repp->flags = Fauth | Fresp | Fcanrec | Oquery;
238 3e0d8fb3 2005-12-27 devnull 	repp->qd = reqp->qd;
239 3e0d8fb3 2005-12-27 devnull 	reqp->qd = reqp->qd->next;
240 3e0d8fb3 2005-12-27 devnull 	repp->qd->next = 0;
241 3e0d8fb3 2005-12-27 devnull 	dp = repp->qd->owner;
242 3e0d8fb3 2005-12-27 devnull 
243 3e0d8fb3 2005-12-27 devnull 	/* send the soa */
244 3e0d8fb3 2005-12-27 devnull 	repp->an = rrlookup(dp, Tsoa, NOneg);
245 3e0d8fb3 2005-12-27 devnull 	reply(1, repp, req);
246 3e0d8fb3 2005-12-27 devnull 	if(repp->an == 0)
247 3e0d8fb3 2005-12-27 devnull 		goto out;
248 3e0d8fb3 2005-12-27 devnull 	rrfreelist(repp->an);
249 3e0d8fb3 2005-12-27 devnull 
250 3e0d8fb3 2005-12-27 devnull 	nlen = strlen(dp->name);
251 3e0d8fb3 2005-12-27 devnull 
252 3e0d8fb3 2005-12-27 devnull 	/* construct a breadth first search of the name space (hard with a hash) */
253 3e0d8fb3 2005-12-27 devnull 	repp->an = &r;
254 3e0d8fb3 2005-12-27 devnull 	for(depth = numelem(dp->name); ; depth++){
255 3e0d8fb3 2005-12-27 devnull 		found = 0;
256 3e0d8fb3 2005-12-27 devnull 		for(h = 0; h < HTLEN; h++)
257 3e0d8fb3 2005-12-27 devnull 			for(ndp = ht[h]; ndp; ndp = ndp->next)
258 3e0d8fb3 2005-12-27 devnull 				if(inzone(ndp, dp->name, nlen, depth)){
259 3e0d8fb3 2005-12-27 devnull 					for(rp = ndp->rr; rp; rp = rp->next){
260 3e0d8fb3 2005-12-27 devnull 						/* there shouldn't be negatives, but just in case */
261 3e0d8fb3 2005-12-27 devnull 						if(rp->negative)
262 3e0d8fb3 2005-12-27 devnull 							continue;
263 3e0d8fb3 2005-12-27 devnull 
264 3e0d8fb3 2005-12-27 devnull 						/* don't send an soa's, ns's are enough */
265 3e0d8fb3 2005-12-27 devnull 						if(rp->type == Tsoa)
266 3e0d8fb3 2005-12-27 devnull 							continue;
267 3e0d8fb3 2005-12-27 devnull 
268 3e0d8fb3 2005-12-27 devnull 						r = *rp;
269 3e0d8fb3 2005-12-27 devnull 						r.next = 0;
270 3e0d8fb3 2005-12-27 devnull 						reply(1, repp, req);
271 3e0d8fb3 2005-12-27 devnull 					}
272 3e0d8fb3 2005-12-27 devnull 					found = 1;
273 3e0d8fb3 2005-12-27 devnull 				}
274 3e0d8fb3 2005-12-27 devnull 		if(!found)
275 3e0d8fb3 2005-12-27 devnull 			break;
276 3e0d8fb3 2005-12-27 devnull 	}
277 3e0d8fb3 2005-12-27 devnull 
278 3e0d8fb3 2005-12-27 devnull 	/* resend the soa */
279 3e0d8fb3 2005-12-27 devnull 	repp->an = rrlookup(dp, Tsoa, NOneg);
280 3e0d8fb3 2005-12-27 devnull 	reply(1, repp, req);
281 3e0d8fb3 2005-12-27 devnull 	rrfreelist(repp->an);
282 3e0d8fb3 2005-12-27 devnull out:
283 3e0d8fb3 2005-12-27 devnull 	rrfree(repp->qd);
284 3e0d8fb3 2005-12-27 devnull }
285 3e0d8fb3 2005-12-27 devnull 
286 3e0d8fb3 2005-12-27 devnull static void
287 3e0d8fb3 2005-12-27 devnull getcaller(char *dir)
288 3e0d8fb3 2005-12-27 devnull {
289 3e0d8fb3 2005-12-27 devnull 	int fd, n;
290 3e0d8fb3 2005-12-27 devnull 	static char remote[128];
291 3e0d8fb3 2005-12-27 devnull 
292 3e0d8fb3 2005-12-27 devnull 	snprint(remote, sizeof(remote), "%s/remote", dir);
293 3e0d8fb3 2005-12-27 devnull 	fd = open(remote, OREAD);
294 3e0d8fb3 2005-12-27 devnull 	if(fd < 0)
295 3e0d8fb3 2005-12-27 devnull 		return;
296 3e0d8fb3 2005-12-27 devnull 	n = read(fd, remote, sizeof(remote)-1);
297 3e0d8fb3 2005-12-27 devnull 	close(fd);
298 3e0d8fb3 2005-12-27 devnull 	if(n <= 0)
299 3e0d8fb3 2005-12-27 devnull 		return;
300 3e0d8fb3 2005-12-27 devnull 	if(remote[n-1] == '\n')
301 3e0d8fb3 2005-12-27 devnull 		n--;
302 3e0d8fb3 2005-12-27 devnull 	remote[n] = 0;
303 3e0d8fb3 2005-12-27 devnull 	caller = remote;
304 3e0d8fb3 2005-12-27 devnull }
305 3e0d8fb3 2005-12-27 devnull 
306 3e0d8fb3 2005-12-27 devnull static void
307 3e0d8fb3 2005-12-27 devnull refreshmain(char *net)
308 3e0d8fb3 2005-12-27 devnull {
309 3e0d8fb3 2005-12-27 devnull 	int fd;
310 3e0d8fb3 2005-12-27 devnull 	char file[128];
311 3e0d8fb3 2005-12-27 devnull 
312 3e0d8fb3 2005-12-27 devnull 	snprint(file, sizeof(file), "%s/dns", net);
313 3e0d8fb3 2005-12-27 devnull 	if(debug)
314 3e0d8fb3 2005-12-27 devnull 		syslog(0, logfile, "refreshing %s", file);
315 3e0d8fb3 2005-12-27 devnull 	fd = open(file, ORDWR);
316 3e0d8fb3 2005-12-27 devnull 	if(fd < 0){
317 3e0d8fb3 2005-12-27 devnull 		syslog(0, logfile, "can't refresh %s", file);
318 3e0d8fb3 2005-12-27 devnull 		return;
319 3e0d8fb3 2005-12-27 devnull 	}
320 3e0d8fb3 2005-12-27 devnull 	fprint(fd, "refresh");
321 3e0d8fb3 2005-12-27 devnull 	close(fd);
322 3e0d8fb3 2005-12-27 devnull }
323 3e0d8fb3 2005-12-27 devnull 
324 3e0d8fb3 2005-12-27 devnull /*
325 3e0d8fb3 2005-12-27 devnull  *  the following varies between dnsdebug and dns
326 3e0d8fb3 2005-12-27 devnull  */
327 3e0d8fb3 2005-12-27 devnull void
328 3e0d8fb3 2005-12-27 devnull logreply(int id, uchar *addr, DNSmsg *mp)
329 3e0d8fb3 2005-12-27 devnull {
330 3e0d8fb3 2005-12-27 devnull 	RR *rp;
331 3e0d8fb3 2005-12-27 devnull 
332 3e0d8fb3 2005-12-27 devnull 	syslog(0, LOG, "%d: rcvd %I flags:%s%s%s%s%s", id, addr,
333 3e0d8fb3 2005-12-27 devnull 		mp->flags & Fauth ? " auth" : "",
334 3e0d8fb3 2005-12-27 devnull 		mp->flags & Ftrunc ? " trunc" : "",
335 3e0d8fb3 2005-12-27 devnull 		mp->flags & Frecurse ? " rd" : "",
336 3e0d8fb3 2005-12-27 devnull 		mp->flags & Fcanrec ? " ra" : "",
337 3e0d8fb3 2005-12-27 devnull 		mp->flags & (Fauth|Rname) == (Fauth|Rname) ?
338 3e0d8fb3 2005-12-27 devnull 		" nx" : "");
339 3e0d8fb3 2005-12-27 devnull 	for(rp = mp->qd; rp != nil; rp = rp->next)
340 3e0d8fb3 2005-12-27 devnull 		syslog(0, LOG, "%d: rcvd %I qd %s", id, addr, rp->owner->name);
341 3e0d8fb3 2005-12-27 devnull 	for(rp = mp->an; rp != nil; rp = rp->next)
342 3e0d8fb3 2005-12-27 devnull 		syslog(0, LOG, "%d: rcvd %I an %R", id, addr, rp);
343 3e0d8fb3 2005-12-27 devnull 	for(rp = mp->ns; rp != nil; rp = rp->next)
344 3e0d8fb3 2005-12-27 devnull 		syslog(0, LOG, "%d: rcvd %I ns %R", id, addr, rp);
345 3e0d8fb3 2005-12-27 devnull 	for(rp = mp->ar; rp != nil; rp = rp->next)
346 3e0d8fb3 2005-12-27 devnull 		syslog(0, LOG, "%d: rcvd %I ar %R", id, addr, rp);
347 3e0d8fb3 2005-12-27 devnull }
348 3e0d8fb3 2005-12-27 devnull 
349 3e0d8fb3 2005-12-27 devnull void
350 3e0d8fb3 2005-12-27 devnull logsend(int id, int subid, uchar *addr, char *sname, char *rname, int type)
351 3e0d8fb3 2005-12-27 devnull {
352 3e0d8fb3 2005-12-27 devnull 	char buf[12];
353 3e0d8fb3 2005-12-27 devnull 
354 3e0d8fb3 2005-12-27 devnull 	syslog(0, LOG, "%d.%d: sending to %I/%s %s %s",
355 3e0d8fb3 2005-12-27 devnull 		id, subid, addr, sname, rname, rrname(type, buf, sizeof buf));
356 3e0d8fb3 2005-12-27 devnull }
357 3e0d8fb3 2005-12-27 devnull 
358 3e0d8fb3 2005-12-27 devnull RR*
359 3e0d8fb3 2005-12-27 devnull getdnsservers(int class)
360 3e0d8fb3 2005-12-27 devnull {
361 3e0d8fb3 2005-12-27 devnull 	return dnsservers(class);
362 3e0d8fb3 2005-12-27 devnull }