vendor/netcat/4.7

2 files changed, 27 insertions, 21 deletions

diff --git a/nc.1 b/nc.1
index 68c90d767d11..94a2d43cdbbe 100644
--- a/nc.1
+++ b/nc.1
@@ -1,4 +1,4 @@
-.\"     $OpenBSD: nc.1,v 1.50 2009/06/05 06:47:12 jmc Exp $
+.\"     $OpenBSD: nc.1,v 1.53 2010/02/23 23:00:52 schwarze Exp $
 .\"
 .\" Copyright (c) 1996 David Sacerdote
 .\" All rights reserved.
@@ -25,7 +25,7 @@
 .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: June 5 2009 $
+.Dd $Mdocdate: February 23 2010 $
 .Dt NC 1
 .Os
 .Sh NAME
@@ -47,8 +47,8 @@
 .Op Fl X Ar proxy_protocol
 .Oo Xo
 .Fl x Ar proxy_address Ns Oo : Ns
-.Ar port Oc Oc
-.Xc
+.Ar port Oc
+.Xc Oc
 .Op Ar hostname
 .Op Ar port
 .Ek
@@ -174,7 +174,9 @@ This makes it possible to use
 .Nm
 to script telnet sessions.
 .It Fl U
-Specifies to use Unix Domain Sockets.
+Specifies to use
+.Ux Ns -domain
+sockets.
 .It Fl u
 Use UDP instead of the default option of TCP.
 .It Fl V Ar rdomain
@@ -386,7 +388,9 @@ IP for the local end of the connection:
 .Pp
 .Dl $ nc -s 10.1.2.3 host.example.com 42
 .Pp
-Create and listen on a Unix Domain Socket:
+Create and listen on a
+.Ux Ns -domain
+socket:
 .Pp
 .Dl $ nc -lU /var/tmp/dsocket
 .Pp
diff --git a/netcat.c b/netcat.c
index 6700f89cfe5b..508712388dfd 100644
--- a/netcat.c
+++ b/netcat.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: netcat.c,v 1.93 2009/06/05 00:18:10 claudio Exp $ */
+/* $OpenBSD: netcat.c,v 1.95 2010/02/27 00:58:56 nicm Exp $ */
 /*
  * Copyright (c) 2001 Eric Jackson <ericj@monkey.org>
  *
@@ -403,8 +403,10 @@ main(int argc, char *argv[])
 					    uflag ? "udp" : "tcp");
 				}
 
-				printf("Connection to %s %s port [%s/%s] succeeded!\n",
-				    host, portlist[i], uflag ? "udp" : "tcp",
+				fprintf(stderr,
+				    "Connection to %s %s port [%s/%s] "
+				    "succeeded!\n", host, portlist[i],
+				    uflag ? "udp" : "tcp",
 				    sv ? sv->s_name : "*");
 			}
 			if (!zflag)
@@ -681,27 +683,27 @@ atelnet(int nfd, unsigned char *buf, unsigned int size)
 	unsigned char *p, *end;
 	unsigned char obuf[4];
 
-	end = buf + size;
-	obuf[0] = '\0';
+	if (size < 3)
+		return;
+	end = buf + size - 2;
 
 	for (p = buf; p < end; p++) {
 		if (*p != IAC)
-			break;
+			continue;
 
 		obuf[0] = IAC;
 		p++;
 		if ((*p == WILL) || (*p == WONT))
 			obuf[1] = DONT;
-		if ((*p == DO) || (*p == DONT))
+		else if ((*p == DO) || (*p == DONT))
 			obuf[1] = WONT;
-		if (obuf) {
-			p++;
-			obuf[2] = *p;
-			obuf[3] = '\0';
-			if (atomicio(vwrite, nfd, obuf, 3) != 3)
-				warn("Write Error!");
-			obuf[0] = '\0';
-		}
+		else
+			continue;
+
+		p++;
+		obuf[2] = *p;
+		if (atomicio(vwrite, nfd, obuf, 3) != 3)
+			warn("Write Error!");
 	}
 }