Add tilde and environment variable expansion to RevokedHostKeys.

bz#3552, ok djm@

diff --git a/usr.bin/ssh/ssh.c b/usr.bin/ssh/ssh.c
index b4744f3..c9de771 100644 (file)
--- a/usr.bin/ssh/ssh.c
+++ b/usr.bin/ssh/ssh.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssh.c,v 1.585 2023/02/10 04:40:28 djm Exp $ */
+/* $OpenBSD: ssh.c,v 1.586 2023/03/27 03:56:11 dtucker Exp $ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -1400,6 +1400,14 @@ main(int ac, char **av)
                options.identity_agent = cp;
        }
 
+       if (options.revoked_host_keys != NULL) {
+               p = tilde_expand_filename(options.revoked_host_keys, getuid());
+               cp = default_client_percent_dollar_expand(p, cinfo);
+               free(p);
+               free(options.revoked_host_keys);
+               options.revoked_host_keys = cp;
+       }
+
        if (options.forward_agent_sock_path != NULL) {
                p = tilde_expand_filename(options.forward_agent_sock_path,
                    getuid());

diff --git a/usr.bin/ssh/ssh_config.5 b/usr.bin/ssh/ssh_config.5
index aebdf03..972cafe 100644 (file)
--- a/usr.bin/ssh/ssh_config.5
+++ b/usr.bin/ssh/ssh_config.5
@@ -33,8 +33,8 @@
 .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.\" $OpenBSD: ssh_config.5,v 1.379 2023/03/10 02:32:04 djm Exp $
-.Dd $Mdocdate: March 10 2023 $
+.\" $OpenBSD: ssh_config.5,v 1.380 2023/03/27 03:56:11 dtucker Exp $
+.Dd $Mdocdate: March 27 2023 $
 .Dt SSH_CONFIG 5
 .Os
 .Sh NAME
@@ -1666,6 +1666,14 @@ an OpenSSH Key Revocation List (KRL) as generated by
 .Xr ssh-keygen 1 .
 For more information on KRLs, see the KEY REVOCATION LISTS section in
 .Xr ssh-keygen 1 .
+Arguments to
+.Cm RevokedHostKeys
+may use the tilde syntax to refer to a user's home directory,
+the tokens described in the
+.Sx TOKENS
+section and environment variables as described in the
+.Sx ENVIRONMENT VARIABLES
+section.
 .It Cm SecurityKeyProvider
 Specifies a path to a library that will be used when loading any
 FIDO authenticator-hosted keys, overriding the default of using
@@ -2136,6 +2144,7 @@ The local username.
 .Cm Match exec ,
 .Cm RemoteCommand ,
 .Cm RemoteForward ,
+.Cm RevokedHostKeys ,
 and
 .Cm UserKnownHostsFile
 accept the tokens %%, %C, %d, %h, %i, %k, %L, %l, %n, %p, %r, and %u.