removing (outdated) drawterm

drawterm is much better maintained by russ cox,
so removing this outdated copy.

for a more recent version, go to:

http://swtch.com/drawterm/

1 files changed, 0 insertions, 99 deletions

diff --git a/sys/src/cmd/unix/drawterm/libc/pushtls.c b/sys/src/cmd/unix/drawterm/libc/pushtls.c
deleted file mode 100644
index 038aad748..000000000
--- a/sys/src/cmd/unix/drawterm/libc/pushtls.c
+++ /dev/null
@@ -1,99 +0,0 @@
-#include <u.h>
-#include <libc.h>
-#include <auth.h>
-#include <mp.h>
-#include <libsec.h>
-
-enum {
-	TLSFinishedLen = 12,
-	HFinished = 20,
-};
-
-static int
-finished(int hand, int isclient)
-{
-	int i, n;
-	uchar buf[500], buf2[500];
-
-	buf[0] = HFinished;
-	buf[1] = TLSFinishedLen>>16;
-	buf[2] = TLSFinishedLen>>8;
-	buf[3] = TLSFinishedLen;
-	n = TLSFinishedLen+4;
-
-	for(i=0; i<2; i++){
-		if(i==0)
-			memmove(buf+4, "client finished", TLSFinishedLen);
-		else
-			memmove(buf+4, "server finished", TLSFinishedLen);
-		if(isclient == 1-i){
-			if(write(hand, buf, n) != n)
-				return -1;
-		}else{
-			if(readn(hand, buf2, n) != n || memcmp(buf,buf2,n) != 0)
-				return -1;
-		}
-	}
-	return 1;
-}
-
-
-// given a plain fd and secrets established beforehand, return encrypted connection
-int
-pushtls(int fd, char *hashalg, char *encalg, int isclient, char *secret, char *dir)
-{
-	char buf[8];
-	char dname[64];
-	int n, data, ctl, hand;
-
-	// open a new filter; get ctl fd
-	data = hand = -1;
-	// /net/tls uses decimal file descriptors to name channels, hence a
-	// user-level file server can't stand in for #a; may as well hard-code it.
-	ctl = open("#a/tls/clone", ORDWR);
-	if(ctl < 0)
-		goto error;
-	n = read(ctl, buf, sizeof(buf)-1);
-	if(n < 0)
-		goto error;
-	buf[n] = 0;
-	if(dir)
-		sprint(dir, "#a/tls/%s", buf);
-
-	// get application fd
-	sprint(dname, "#a/tls/%s/data", buf);
-	data = open(dname, ORDWR);
-	if(data < 0)
-		goto error;
-
-	// get handshake fd
-	sprint(dname, "#a/tls/%s/hand", buf);
-	hand = open(dname, ORDWR);
-	if(hand < 0)
-		goto error;
-
-	// speak a minimal handshake
-	if(fprint(ctl, "fd %d 0x301", fd) < 0 ||
-	   fprint(ctl, "version 0x301") < 0 ||
-	   fprint(ctl, "secret %s %s %d %s", hashalg, encalg, isclient, secret) < 0 ||
-	   fprint(ctl, "changecipher") < 0 ||
-	   finished(hand, isclient) < 0 ||
-	   fprint(ctl, "opened") < 0){
-		close(hand);
-		hand = -1;
-		goto error;
-	}
-	close(ctl);
-	close(hand);
-	close(fd);
-	return data;
-
-error:
-	if(data>=0)
-		close(data);
-	if(ctl>=0)
-		close(ctl);
-	if(hand>=0)
-		close(hand);
-	return -1;
-}