- stevesk@cvs.openbsd.org 2002/07/19 17:42:40
[ssh.c]
display a warning from ssh when XAuthLocation does not exist or xauth
returned no authentication data. ok markus@
diff --git a/ssh.c b/ssh.c
index 77e709d..fec93be 100644
--- a/ssh.c
+++ b/ssh.c
@@ -40,7 +40,7 @@
*/
#include "includes.h"
-RCSID("$OpenBSD: ssh.c,v 1.181 2002/07/03 14:21:05 markus Exp $");
+RCSID("$OpenBSD: ssh.c,v 1.182 2002/07/19 17:42:40 stevesk Exp $");
#include <openssl/evp.h>
#include <openssl/err.h>
@@ -734,11 +734,19 @@
FILE *f;
int got_data = 0, i;
char *display;
+ struct stat st;
*_proto = proto;
*_data = data;
proto[0] = data[0] = '\0';
- if (options.xauth_location && (display = getenv("DISPLAY"))) {
+ if (!options.xauth_location ||
+ (stat(options.xauth_location, &st) == -1)) {
+ debug("No xauth program.");
+ } else {
+ if ((display = getenv("DISPLAY")) == NULL) {
+ debug("x11_get_proto: DISPLAY not set");
+ return;
+ }
/* Try to get Xauthority information for the display. */
if (strncmp(display, "localhost:", 10) == 0)
/*
@@ -753,7 +761,7 @@
else
snprintf(line, sizeof line, "%s list %.200s 2>"
_PATH_DEVNULL, options.xauth_location, display);
- debug2("x11_get_proto %s", line);
+ debug2("x11_get_proto: %s", line);
f = popen(line, "r");
if (f && fgets(line, sizeof(line), f) &&
sscanf(line, "%*s %511s %511s", proto, data) == 2)
@@ -772,6 +780,7 @@
if (!got_data) {
u_int32_t rand = 0;
+ log("Warning: No xauth data; using fake authentication data for X11 forwarding.");
strlcpy(proto, "MIT-MAGIC-COOKIE-1", sizeof proto);
for (i = 0; i < 16; i++) {
if (i % 4 == 0)