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zlib

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This commit is contained in:
Bjorn Andersson 2006-06-06 17:59:24 +00:00
parent cbfab201b8
commit f9a2f07e11
3 changed files with 24 additions and 8 deletions
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2
Makefile
View file

@ -6,7 +6,7 @@ DNSDOBJS = dnstund.o tun.o dnsd.o
OS = `uname | tr "a-z" "A-Z"`
LDFLAGS =
LDFLAGS = -lz
CFLAGS = -c -g -Wall -D$(OS)
all: stateos $(DNS) $(DNSD)

13
dnstun.c
View file

@ -25,6 +25,7 @@
#include <fcntl.h>
#include <err.h>
#include <arpa/inet.h>
#include <zlib.h>
#include "tun.h"
#include "dns.h"
@ -50,6 +51,8 @@ tunnel(int tun_fd, int dns_fd)
fd_set fds;
struct timeval tv;
struct tun_frame *frame;
long buflen;
char buf[64*1024];
frame = malloc(FRAMESIZE);
@ -77,13 +80,17 @@ tunnel(int tun_fd, int dns_fd)
if(FD_ISSET(tun_fd, &fds)) {
read = read_tun(tun_fd, frame, FRAMESIZE);
if (read > 0) {
printf("Got data on tun! %d bytes\n", read);
dns_handle_tun(dns_fd, frame->data, read - 4);
buflen = sizeof(buf);
compress2(buf, &buflen, frame->data, read - 4, 9);
dns_handle_tun(dns_fd, buf, buflen);
}
}
if(FD_ISSET(dns_fd, &fds)) {
read = dns_read(dns_fd, frame->data, FRAMESIZE-4);
if (read > 0) {
buflen = 64*1024-4;
uncompress(frame->data, &buflen, buf, read);
printf("Got data on dns! %d bytes\n", read);
frame->flags = htons(0x0000);
@ -93,7 +100,7 @@ tunnel(int tun_fd, int dns_fd)
frame->proto = htons(0x0002); // BSD wants AF_INET as long word
#endif
write_tun(tun_fd, frame, read + 4);
write_tun(tun_fd, frame, buflen + 4);
if (!dns_sending()) {
dns_ping(dns_fd);
}

17
dnstund.c
View file

@ -25,6 +25,7 @@
#include <fcntl.h>
#include <err.h>
#include <arpa/inet.h>
#include <zlib.h>
#include "tun.h"
#include "dns.h"
@ -49,6 +50,8 @@ tunnel(int tun_fd, int dns_fd)
fd_set fds;
struct timeval tv;
struct tun_frame *frame;
long buflen;
char buf[64*1024];
frame = malloc(64*1024);
@ -80,19 +83,25 @@ tunnel(int tun_fd, int dns_fd)
} else {
if(FD_ISSET(tun_fd, &fds)) {
read = read_tun(tun_fd, frame, 64*1024);
if(read > 0)
dnsd_queuepacket(frame->data, read - 4);
if(read > 0) {
buflen = sizeof(buf);
compress2(buf, &buflen, frame->data, read - 4, 9);
dnsd_queuepacket(buf, buflen);
}
}
if(FD_ISSET(dns_fd, &fds)) {
read = dnsd_read(dns_fd, frame->data, 64*1024-4);
read = dnsd_read(dns_fd, buf, 64*1024-4);
if(read > 0) {
buflen = 64*1024-4;
uncompress(frame->data, &buflen, buf, read);
frame->flags = htons(0x0000);
#ifdef LINUX
frame->proto = htons(0x0800);
#else
frame->proto = htons(0x0002);
#endif
write_tun(tun_fd, frame, read + 4);
write_tun(tun_fd, frame, buflen + 4);
}
}
}