add -R flag: exit code indicates if RSA is alive

2 files changed, 16 insertions, 3 deletions

diff --git a/usr.bin/ssh/ssh-keygen.1 b/usr.bin/ssh/ssh-keygen.1
index 68e27db444d..59c73cca741 100644
--- a/usr.bin/ssh/ssh-keygen.1
+++ b/usr.bin/ssh/ssh-keygen.1
@@ -9,7 +9,7 @@
 .\"
 .\" Created: Sat Apr 22 23:55:14 1995 ylo
 .\"
-.\" $Id: ssh-keygen.1,v 1.13 2000/04/12 21:47:51 aaron Exp $
+.\" $Id: ssh-keygen.1,v 1.14 2000/04/26 21:55:04 deraadt Exp $
 .\"
 .Dd September 25, 1999
 .Dt SSH-KEYGEN 1
@@ -37,6 +37,8 @@
 .Nm ssh-keygen
 .Fl l
 .Op Fl f Ar keyfile
+.Nm ssh-keygen
+.Fl R
 .Sh DESCRIPTION
 .Nm
 generates and manages authentication keys for
@@ -112,6 +114,10 @@ Provides the new comment.
 Provides the new passphrase.
 .It Fl P Ar passphrase
 Provides the (old) passphrase.
+.It Fl R
+If RSA support is functional, immediately exits with code 0.  If RSA
+support is not functional, exits with code 1.  This flag will be
+removed once the RSA patent expires.
 .El
 .Sh FILES
 .Bl -tag -width Ds
diff --git a/usr.bin/ssh/ssh-keygen.c b/usr.bin/ssh/ssh-keygen.c
index 5482839578d..eae66500250 100644
--- a/usr.bin/ssh/ssh-keygen.c
+++ b/usr.bin/ssh/ssh-keygen.c
@@ -7,7 +7,7 @@
  */
 
 #include "includes.h"
-RCSID("$Id: ssh-keygen.c,v 1.19 2000/04/26 20:56:29 markus Exp $");
+RCSID("$Id: ssh-keygen.c,v 1.20 2000/04/26 21:55:04 deraadt Exp $");
 
 #include <openssl/evp.h>
 #include <openssl/pem.h>
@@ -519,7 +519,7 @@ main(int ac, char **av)
 		exit(1);
 	}
 
-	while ((opt = getopt(ac, av, "dqpclxXyb:f:P:N:C:")) != EOF) {
+	while ((opt = getopt(ac, av, "dqpclRxXyb:f:P:N:C:")) != EOF) {
 		switch (opt) {
 		case 'b':
 			bits = atoi(optarg);
@@ -562,6 +562,13 @@ main(int ac, char **av)
 			quiet = 1;
 			break;
 
+		case 'R':
+			if (rsa_alive() == 0)
+				exit(1);
+			else
+				exit(0);
+			break;
+
 		case 'x':
 			convert_to_ssh2 = 1;
 			break;