1 files changed, 104 insertions, 0 deletions

diff --git a/other/ssharp/auth-chall.c b/other/ssharp/auth-chall.c
new file mode 100644
index 0000000..f3502f4
--- /dev/null
+++ b/other/ssharp/auth-chall.c
@@ -0,0 +1,104 @@
+/*
+ * 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-chall.c,v 1.7 2001/04/05 10:42:47 markus Exp $");
+
+#include "auth.h"
+#include "log.h"
+
+#ifdef BSD_AUTH
+char *
+get_challenge(Authctxt *authctxt, char *devs)
+{
+        char *challenge;
+
+        if (authctxt->as != NULL) {
+                debug2("try reuse session");
+                challenge = auth_getitem(authctxt->as, AUTHV_CHALLENGE);
+                if (challenge != NULL) {
+                        debug2("reuse bsd auth session");
+                        return challenge;
+                }
+                auth_close(authctxt->as);
+                authctxt->as = NULL;
+        }
+        debug2("new bsd auth session");
+        if (devs == NULL || strlen(devs) == 0)
+                devs = authctxt->style;
+        debug3("bsd auth: devs %s", devs ? devs : "<default>");
+        authctxt->as = auth_userchallenge(authctxt->user, devs, "auth-ssh",
+            &challenge);
+        if (authctxt->as == NULL)
+                return NULL;
+        debug2("get_challenge: <%s>", challenge ? challenge : "EMPTY");
+        return challenge;
+}
+int
+verify_response(Authctxt *authctxt, char *response)
+{
+        int authok;
+
+        if (authctxt->as == 0)
+                error("verify_response: no bsd auth session");
+        authok = auth_userresponse(authctxt->as, response, 0);
+        authctxt->as = NULL;
+        debug("verify_response: <%s> = <%d>", response, authok);
+        return authok != 0;
+}
+#else
+#ifdef SKEY
+#include <skey.h>
+
+char *
+get_challenge(Authctxt *authctxt, char *devs)
+{
+        static char challenge[1024];
+        struct skey skey;
+        if (skeychallenge(&skey, authctxt->user, challenge) == -1)
+                return NULL;
+        strlcat(challenge, "\nS/Key Password: ", sizeof challenge);
+        return challenge;
+}
+int
+verify_response(Authctxt *authctxt, char *response)
+{
+        return (authctxt->valid &&
+            skey_haskey(authctxt->pw->pw_name) == 0 &&
+            skey_passcheck(authctxt->pw->pw_name, response) != -1);
+}
+#else
+/* not available */
+char *
+get_challenge(Authctxt *authctxt, char *devs)
+{
+        return NULL;
+}
+int
+verify_response(Authctxt *authctxt, char *response)
+{
+        return 0;
+}
+#endif
+#endif