- dtucker@cvs.openbsd.org 2004/02/27 22:44:56

[openssh.git] / auth-passwd.c

diff --git a/auth-passwd.c b/auth-passwd.c
index a27170cccb4bf76653af750782e25f698286b452..b9679abd0c5f53baffbd15f1f88381d286a2224d 100644 (file)
--- a/auth-passwd.c
+++ b/auth-passwd.c
@@ -36,17 +36,24 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: auth-passwd.c,v 1.30 2003/11/04 08:54:09 djm Exp $");
+RCSID("$OpenBSD: auth-passwd.c,v 1.31 2004/01/30 09:48:57 markus Exp $");
 
 #include "packet.h"
 #include "log.h"
 #include "servconf.h"
 #include "auth.h"
-#ifdef WITH_AIXAUTHENTICATE
-# include "canohost.h"
-#endif
+#include "auth-options.h"
 
 extern ServerOptions options;
+int sys_auth_passwd(Authctxt *, const char *);
+
+void
+disable_forwarding(void)
+{
+       no_port_forwarding_flag = 1;
+       no_agent_forwarding_flag = 1;
+       no_x11_forwarding_flag = 1;
+}
 
 /*
  * Tries to authenticate the user using password.  Returns true if
@@ -57,6 +64,7 @@ auth_password(Authctxt *authctxt, const char *password)
 {
        struct passwd * pw = authctxt->pw;
        int ok = authctxt->valid;
+       static int expire_checked = 0;
 
 #ifndef HAVE_CYGWIN
        if (pw->pw_uid == 0 && options.permit_root_login != PERMIT_YES)
@@ -66,17 +74,21 @@ auth_password(Authctxt *authctxt, const char *password)
                return 0;
 
 #if defined(HAVE_OSF_SIA)
+       /*
+        * XXX: any reason this is before krb?  could be moved to
+        * sys_auth_passwd()?  -dt
+        */
        return auth_sia_password(authctxt, password) && ok;
-#else
-# ifdef KRB5
+#endif
+#ifdef KRB5
        if (options.kerberos_authentication == 1) {
                int ret = auth_krb5_password(authctxt, password);
                if (ret == 1 || ret == 0)
                        return ret && ok;
                /* Fall back to ordinary passwd authentication. */
        }
-# endif
-# ifdef HAVE_CYGWIN
+#endif
+#ifdef HAVE_CYGWIN
        if (is_winnt) {
                HANDLE hToken = cygwin_logon_user(pw, password);
 
@@ -85,41 +97,60 @@ auth_password(Authctxt *authctxt, const char *password)
                cygwin_set_impersonation_token(hToken);
                return ok;
        }
-# endif
-# ifdef WITH_AIXAUTHENTICATE
-       if (aix_authenticate(pw->pw_name, password,
-           get_canonical_hostname(options.use_dns)) == 0)
-               return 0;
-       else
-               return ok;
-# endif
-# ifdef BSD_AUTH
-       if (auth_userokay(pw->pw_name, authctxt->style, "auth-ssh",
-           (char *)password) == 0)
-               return 0;
-       else
-               return ok;
-# else
-       {
+#endif
+#if defined(USE_SHADOW) && defined(HAS_SHADOW_EXPIRE)
+       if (!expire_checked) {
+               expire_checked = 1;
+               if (auth_shadow_pwexpired(authctxt)) {
+                       disable_forwarding();
+                       authctxt->force_pwchange = 1;
+               }
+       }
+#endif
+               
+       return (sys_auth_passwd(authctxt, password) && ok);
+}
+
+#ifdef BSD_AUTH
+int
+sys_auth_passwd(Authctxt *authctxt, const char *password)
+{
+       struct passwd *pw = authctxt->pw;
+       auth_session_t *as;
+
+       as = auth_usercheck(pw->pw_name, authctxt->style, "auth-ssh",
+           (char *)password);
+       if (auth_getstate(as) & AUTH_PWEXPIRED) {
+               auth_close(as);
+               disable_forwarding();
+               authctxt->force_pwchange = 1;
+               return (1);
+       } else {
+               return (auth_close(as));
+       }
+}
+#elif !defined(CUSTOM_SYS_AUTH_PASSWD)
+int
+sys_auth_passwd(Authctxt *authctxt, const char *password)
+{
+       struct passwd *pw = authctxt->pw;
+       char *encrypted_password;
+
        /* Just use the supplied fake password if authctxt is invalid */
        char *pw_password = authctxt->valid ? shadow_pw(pw) : pw->pw_passwd;
 
        /* Check for users with no password. */
        if (strcmp(pw_password, "") == 0 && strcmp(password, "") == 0)
-               return ok;
-       else {
-               /* Encrypt the candidate password using the proper salt. */
-               char *encrypted_password = xcrypt(password,
-                   (pw_password[0] && pw_password[1]) ? pw_password : "xx");
+               return (1);
 
-               /*
-                * Authentication is accepted if the encrypted passwords
-                * are identical.
-                */
-               return (strcmp(encrypted_password, pw_password) == 0) && ok;
-       }
+       /* Encrypt the candidate password using the proper salt. */
+       encrypted_password = xcrypt(password,
+           (pw_password[0] && pw_password[1]) ? pw_password : "xx");
 
-       }
-# endif
-#endif /* !HAVE_OSF_SIA */
+       /*
+        * Authentication is accepted if the encrypted passwords
+        * are identical.
+        */
+       return (strcmp(encrypted_password, pw_password) == 0);
 }
+#endif