From: Miek Gieben <miekg@NLnetLabs.nl>
Date: Mon, 6 Mar 2006 13:49:42 +0000 (+0000)
Subject: cpap 2 dnsserver
X-Git-Tag: release-1.1.0~328
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=91671d150f3bb499edbd1b6f09d216b4deb875dc;p=thirdparty%2Fldns.git

cpap 2 dnsserver
---

diff --git a/examples/Makefile.in b/examples/Makefile.in
index ab95e050..fb0ffd39 100644
--- a/examples/Makefile.in
+++ b/examples/Makefile.in
@@ -47,7 +47,7 @@ PROGRAMS=$(SOURCES:.c=)
 
 all:	$(PROGRAMS)
 
-pcap: 	ldns-pcap-drill
+pcap: 	ldns-cat-pcap
 
 ldns-read-zone: 	ldns-read-zone.o
 			$(LINK) -o $@ $+
@@ -82,7 +82,7 @@ ldns-walk:	ldns-walk.o
 ldns-dpa:	ldns-dpa.o
 		$(LINK) -o $@ $+
 
-ldns-pcap-drill: 	ldns-pcap-drill.o
+ldns-cat-pcap: 	ldns-cat-pcap.o
 		$(LINK) -o $@ $+
 
 ldns-zsplit:	ldns-zsplit.o
diff --git a/examples/ldns-pcap-drill.c b/examples/ldns-cat-pcap.c
similarity index 51%
rename from examples/ldns-pcap-drill.c
rename to examples/ldns-cat-pcap.c
index f595c3cc..271d1723 100644
--- a/examples/ldns-pcap-drill.c
+++ b/examples/ldns-cat-pcap.c
@@ -21,19 +21,21 @@
  * also write this with pcap_dump
  */
 
-int
+u_char *
 pcap2ldns_pkt_ip(const u_char *packet, struct pcap_pkthdr *h)
 {
-	ldns_pkt *dns;
 
+	h->caplen=-DNS_OFFSET;
+	return (u_char*)(packet + DNS_OFFSET);
+#if 0
 	if (ldns_wire2pkt(&dns, packet + DNS_OFFSET
 					, (h->caplen - DNS_OFFSET)) == LDNS_STATUS_OK) {
  	ldns_pkt_print(stdout, dns); 
 	}
-	return 0;
+#endif
 }
 
-int
+u_char *
 pcap2ldns_pkt(const u_char *packet, struct pcap_pkthdr *h)
 {
 	struct ether_header *eptr;
@@ -44,9 +46,6 @@ pcap2ldns_pkt(const u_char *packet, struct pcap_pkthdr *h)
 			return pcap2ldns_pkt_ip(packet, h);
 			break;
 		case ETHERTYPE_IPV6:
-			/*
-			return pcap2ldns_pkt_ip6(packet, h);
-			*/
 			break;
 		case ETHERTYPE_ARP:
 			fprintf(stderr, "ARP pkt, dropping\n");
@@ -66,17 +65,53 @@ main(int argc, char **argv)
 	struct pcap_pkthdr h;
 	const u_char *x;
 	size_t i = 0;
+	ldns_rdf *ip;
+	ldns_pkt *rpkt;
+
+	uint8_t *result;
+	ldns_buffer *qpkt;
+	size_t size;
+	socklen_t tolen;
+
+	struct timeval timeout;
+	struct sockaddr_storage *data;
+	struct sockaddr_in  *data_in;
+
+	ip = ldns_rdf_new_frm_str(LDNS_RDF_TYPE_A, "127.0.0.1");
+	data = LDNS_MALLOC(struct sockaddr_storage);
+	timeout.tv_sec = 2;
+	timeout.tv_usec = 0;
 
-	if (!(p = pcap_open_offline("/tmp/K/20011009-134418-q50000.pkt", errbuf))) {
-		printf("Cannot open pcap lib %s\n", errbuf);
+	data->ss_family = AF_INET;
+        data_in = (struct sockaddr_in*) data;
+        data_in->sin_port = (in_port_t)htons(53);
+        memcpy(&(data_in->sin_addr), ldns_rdf_data(ip), ldns_rdf_size(ip));
+        tolen = sizeof(struct sockaddr_in);
+
+	if (!(p = pcap_open_offline("./20011009-134418-q50000.pkt", errbuf))) {
+		fprintf(stderr, "Cannot open pcap lib %s\n", errbuf);
+		exit(EXIT_FAILURE);
 	}
 
+	qpkt = ldns_buffer_new(LDNS_MAX_PACKETLEN);
+
 	while ((x = pcap_next(p, &h))) {
-            	pcap2ldns_pkt_ip(x, &h);  
+		ldns_buffer_write(qpkt,
+				pcap2ldns_pkt_ip(x, &h),
+				h.caplen);
+
+		if (ldns_udp_send(&result, qpkt, data, tolen, timeout, &size) ==
+				LDNS_STATUS_OK) {
+			ldns_wire2pkt(&rpkt, result, size);
+			ldns_pkt_print(stdout, rpkt);
+		}
+
+		ldns_buffer_clear(qpkt);
+		
 		i++;
-	printf("pkt seen %zd\n", i);
+
+		printf("pkt seen %zd\n", i);
 	}
 	pcap_close(p);
 	return 0;
 }
-