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