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--- a/server.c
+++ b/server.c
@@ -25,12 +25,63 @@ static int len;
static char *q;
+static uint64 stats_numq;
+static uint64 stats_plus;
+static uint64 stats_minus;
+static uint64 stats_nx;
+static uint64 stats_notimp;
+static uint64 stats_weird;
+static uint64 stats_noq;
+
+/* work around gcc 2.95.2 bug */
+#define number(x) ( (u64 = (x)), u64_print() )
+static uint64 u64;
+static void u64_print(void)
+{
+ char ubuf[20];
+ unsigned int pos;
+
+ pos = sizeof ubuf;
+ do {
+ if (!pos) break;
+ ubuf[--pos] = '0' + (u64 % 10);
+ u64 /= 10;
+ } while(u64);
+
+ buffer_put(buffer_2,ubuf + pos,sizeof ubuf - pos);
+}
+
+static void string(const char *s)
+{
+ buffer_puts(buffer_2,s);
+}
+
+static void line(void)
+{
+ string("\n");
+ buffer_flush(buffer_2);
+}
+
+static void log_stats(void)
+{
+ string("stats ");
+ number(stats_numq); string(" ");
+ number(stats_plus); string(" ");
+ number(stats_minus); string(" ");
+ number(stats_nx); string(" ");
+ number(stats_notimp); string(" ");
+ number(stats_weird); string(" ");
+ number(stats_noq);
+ line();
+}
+
static int doit(void)
{
unsigned int pos;
char header[12];
char qtype[2];
char qclass[2];
+ stats_numq++;
if (len >= sizeof buf) goto NOQ;
pos = dns_packet_copy(buf,len,0,header,12); if (!pos) goto NOQ;
@@ -56,25 +107,37 @@ static int doit(void)
case_lowerb(q,dns_domain_length(q));
if (!respond(q,qtype,ip)) {
+ stats_minus++;
qlog(ip,port,header,q,qtype," - ");
return 0;
}
- qlog(ip,port,header,q,qtype," + ");
+
+ if ((response[2] & 4) && (response[3] & 3)) {
+ stats_nx++;
+ qlog(ip,port,header,q,qtype," N ");
+ }
+ else {
+ stats_plus++;
+ qlog(ip,port,header,q,qtype," + ");
+ }
return 1;
NOTIMP:
+ stats_notimp++;
response[3] &= ~15;
response[3] |= 4;
qlog(ip,port,header,q,qtype," I ");
return 1;
WEIRDCLASS:
+ stats_weird++;
response[3] &= ~15;
response[3] |= 1;
qlog(ip,port,header,q,qtype," C ");
return 1;
NOQ:
+ stats_noq++;
qlog(ip,port,"\0\0","","\0\0"," / ");
return 0;
}
@@ -83,6 +146,7 @@ int main()
{
char *x;
int udp53;
+ unsigned char flag=0;
x = env_get("IP");
if (!x)
@@ -106,6 +170,8 @@ int main()
buffer_putsflush(buffer_2,starting);
for (;;) {
+ if ((flag++)%32==1)
+ log_stats();
len = socket_recv4(udp53,buf,sizeof buf,ip,&port);
if (len < 0) continue;
if (!doit()) continue;
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