improved kbd-interactive support. work by per@appgate.com and me

1 files changed, 97 insertions, 0 deletions

diff --git a/usr.bin/ssh/auth-skey.c b/usr.bin/ssh/auth-skey.c
new file mode 100644
index 00000000000..f921fc1bb70
--- /dev/null
+++ b/usr.bin/ssh/auth-skey.c
@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 2001 Markus Friedl.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "includes.h"
+RCSID("$OpenBSD: auth-skey.c,v 1.12 2001/05/18 14:13:28 markus Exp $");
+
+#ifdef SKEY
+
+#include <skey.h>
+
+#include "xmalloc.h"
+#include "auth.h"
+
+static void *
+skey_init_ctx(Authctxt *authctxt)
+{
+	return authctxt;
+}
+
+#define PROMPT "\nS/Key Password: "
+
+static int
+skey_query(void *ctx, char **name, char **infotxt, 
+    u_int* numprompts, char ***prompts, u_int **echo_on)
+{
+	Authctxt *authctxt = ctx;
+	char challenge[1024], *p;
+	int len;
+	struct skey skey;
+
+	if (skeychallenge(&skey, authctxt->user, challenge) == -1)
+		return -1;
+
+	*name       = xstrdup("");
+	*infotxt    = xstrdup("");
+	*numprompts = 1;
+	*prompts = xmalloc(*numprompts * sizeof(char*));
+	*echo_on = xmalloc(*numprompts * sizeof(u_int));
+	(*echo_on)[0] = 0;
+
+	len = strlen(challenge) + strlen(PROMPT) + 1;
+	p = xmalloc(len);
+	p[0] = '\0';
+	strlcat(p, challenge, len);
+	strlcat(p, PROMPT, len);
+	(*prompts)[0] = p;
+
+	return 0;
+}
+
+static int
+skey_respond(void *ctx, u_int numresponses, char **responses)
+{
+	Authctxt *authctxt = ctx;
+ 
+	if (authctxt->valid &&
+	    numresponses == 1 && 
+	    skey_haskey(authctxt->pw->pw_name) == 0 &&
+	    skey_passcheck(authctxt->pw->pw_name, responses[0]) != -1)
+	    return 0;
+	return -1;
+}
+
+static void
+skey_free_ctx(void *ctx)
+{
+	/* we don't have a special context */
+}
+
+KbdintDevice skey_device = {
+	"skey",
+	skey_init_ctx,
+	skey_query,
+	skey_respond,
+	skey_free_ctx
+};
+#endif /* SKEY */