1 files changed, 53 insertions, 0 deletions

diff --git a/auth-sia.c b/auth-sia.c
index a9e1c258c..debf30201 100644
--- a/auth-sia.c
+++ b/auth-sia.c
@@ -34,6 +34,10 @@
 #include <unistd.h>
 #include <stdarg.h>
 #include <string.h>
+#include <sys/types.h>
+#include <sys/security.h>
+#include <prot.h>
+#include <time.h>
 
 #include "ssh.h"
 #include "key.h"
@@ -49,6 +53,52 @@ extern ServerOptions options;
 extern int saved_argc;
 extern char **saved_argv;
 
+static int
+sia_password_change_required(const char *user)
+{
+        struct es_passwd *acct;
+        time_t pw_life;
+        time_t pw_date;
+
+        set_auth_parameters(saved_argc, saved_argv);
+
+        if ((acct = getespwnam(user)) == NULL) {
+                error("Couldn't access protected database entry for %s", user);
+                endprpwent();
+                return (0);
+        }
+
+        /* If forced password change flag is set, honor it */
+        if (acct->uflg->fg_psw_chg_reqd && acct->ufld->fd_psw_chg_reqd) {
+                endprpwent();
+                return (1);
+        }
+
+        /* Obtain password lifetime; if none, it can't have expired */
+        if (acct->uflg->fg_expire)
+                pw_life = acct->ufld->fd_expire;
+        else if (acct->sflg->fg_expire)
+                pw_life = acct->sfld->fd_expire;
+        else {
+                endprpwent();
+                return (0);
+        }
+
+        /* Offset from last change; if none, it must be expired */
+        if (acct->uflg->fg_schange)
+                pw_date = acct->ufld->fd_schange + pw_life;
+        else {
+                endprpwent();
+                return (1);
+        }
+
+        endprpwent();
+
+        /* If expiration date is prior to now, change password */
+        
+        return (pw_date <= time((time_t *) NULL));
+}
+
 int
 sys_auth_passwd(Authctxt *authctxt, const char *pass)
 {
@@ -76,6 +126,9 @@ sys_auth_passwd(Authctxt *authctxt, const char *pass)
 
         sia_ses_release(&ent);
 
+        authctxt->force_pwchange = sia_password_change_required(
+                authctxt->user);
+
         return (1);
 }