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we got pong

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This commit is contained in:
Bjorn Andersson 2006-06-06 00:17:28 +00:00
parent f26723ff2c
commit 08643a6641
4 changed files with 12 additions and 21 deletions
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17
dns.c
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@ -317,6 +317,8 @@ dns_read(int fd, char *buf, int buflen)
if(header->qr) { /* qr=1 => response */
ancount = ntohs(header->ancount);
rlen = 0;
for(i=0;i<ancount;i++) {
READNAME(packet, name, data);
READSHORT(type, data);
@ -325,17 +327,8 @@ dns_read(int fd, char *buf, int buflen)
READSHORT(rlen, data);
READDATA(rdata, data, rlen);
if(type == T_SRV && rlen > 6) {
char *r;
short priority;
short weight;
r = rdata;
READSHORT(priority, r);
READSHORT(weight, r);
READSHORT(port, r);
READNAME(packet, host, r);
if(type == T_NULL) {
memcpy(buf, rdata, rlen);
}
}
if (dns_sending() && chunkid == ntohs(header->id)) {
@ -354,7 +347,7 @@ dns_read(int fd, char *buf, int buflen)
}
// TODO is any data attached? find out and copy into buf and return length
return 0;
return rlen;
}
}

3
dnsd.c
View file

@ -180,10 +180,9 @@ static void
dnsd_respond(int fd, short id, struct sockaddr_in from)
{
int len;
int size;
HEADER *header;
char *p;
char buf[1024];
HEADER *header;
memset(buf, 0, sizeof(buf));

9
dnstun.c
View file

@ -24,12 +24,11 @@
#include <sys/stat.h>
#include <fcntl.h>
#include <err.h>
#include <arpa/inet.h>
#include "tun.h"
#include "dns.h"
#define MAX(a,b) ((a)>(b)?(a):(b))
#define FRAMESIZE (64*1024)
int running = 1;
@ -75,6 +74,7 @@ tunnel(int tun_fd, int dns_fd)
if(FD_ISSET(tun_fd, &fds)) {
read = read_tun(tun_fd, frame, FRAMESIZE);
if (read > 0) {
printf("%04x\n", frame->proto);
printf("Got data on tun! %d bytes\n", read);
dns_handle_tun(dns_fd, frame->data, read - 4);
}
@ -84,8 +84,9 @@ tunnel(int tun_fd, int dns_fd)
if (read > 0) {
printf("Got data on dns! %d bytes\n", read);
frame->flags = htons(0x0000);
frame->proto = htons(0x0800);
//frame->flags = htons(0x0000);
//frame->proto = htons(0x0200);
write_tun(tun_fd, frame, read + 4);
}
}

4
dnstund.c
View file

@ -24,16 +24,14 @@
#include <sys/stat.h>
#include <fcntl.h>
#include <err.h>
#include <arpa/inet.h>
#include "tun.h"
#include "dns.h"
#include "dnsd.h"
#define MAX(a,b) ((a)>(b)?(a):(b))
int running = 1;
static void
sigint(int sig) {
running = 0;