- otto@cvs.openbsd.org 2005/01/21 08:32:02

[openssh.git] / auth-passwd.c

diff --git a/auth-passwd.c b/auth-passwd.c
index 7a68e05628616446747ae392972e3305e0b051e7..2e5fbc73a8efb843e64f71b6fea86f26ba974bea 100644 (file)
--- a/auth-passwd.c
+++ b/auth-passwd.c
@@ -36,17 +36,27 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: auth-passwd.c,v 1.31 2004/01/30 09:48:57 markus Exp $");
+RCSID("$OpenBSD: auth-passwd.c,v 1.32 2005/01/21 08:32:02 otto Exp $");
 
 #include "packet.h"
+#include "buffer.h"
 #include "log.h"
 #include "servconf.h"
 #include "auth.h"
 #include "auth-options.h"
 
+extern Buffer loginmsg;
 extern ServerOptions options;
 int sys_auth_passwd(Authctxt *, const char *);
 
+#ifdef HAVE_LOGIN_CAP
+extern login_cap_t *lc;
+#endif
+
+
+#define DAY            (24L * 60 * 60) /* 1 day in seconds */
+#define TWO_WEEKS      (2L * 7 * DAY)  /* 2 weeks in seconds */
+
 void
 disable_forwarding(void)
 {
@@ -111,11 +121,46 @@ auth_password(Authctxt *authctxt, const char *password)
 }
 
 #ifdef BSD_AUTH
+static void
+warn_expiry(Authctxt *authctxt, auth_session_t *as)
+{
+       char buf[256];
+       quad_t pwtimeleft, actimeleft, daysleft, pwwarntime, acwarntime;
+
+       pwwarntime = acwarntime = TWO_WEEKS;
+
+       pwtimeleft = auth_check_change(as);
+       actimeleft = auth_check_expire(as);
+#if HAVE_LOGIN_CAP
+       if (authctxt->valid) {
+               pwwarntime = login_getcaptime(lc, "password-warn", TWO_WEEKS,
+                   TWO_WEEKS);
+               acwarntime = login_getcaptime(lc, "expire-warn", TWO_WEEKS,
+                   TWO_WEEKS);
+       }
+#endif
+       if (pwtimeleft != 0 && pwtimeleft < pwwarntime) {
+               daysleft = pwtimeleft / DAY + 1;
+               snprintf(buf, sizeof(buf),
+                   "Your password will expire in %lld day%s.\n",
+                   daysleft, daysleft == 1 ? "" : "s");
+               buffer_append(&loginmsg, buf, strlen(buf));
+       }
+       if (actimeleft != 0 && actimeleft < acwarntime) {
+               daysleft = actimeleft / DAY + 1;
+               snprintf(buf, sizeof(buf),
+                   "Your account will expire in %lld day%s.\n",
+                   daysleft, daysleft == 1 ? "" : "s");
+               buffer_append(&loginmsg, buf, strlen(buf));
+       }
+}
+
 int
 sys_auth_passwd(Authctxt *authctxt, const char *password)
 {
        struct passwd *pw = authctxt->pw;
        auth_session_t *as;
+       static int expire_checked = 0;
 
        as = auth_usercheck(pw->pw_name, authctxt->style, "auth-ssh",
            (char *)password);
@@ -125,6 +170,10 @@ sys_auth_passwd(Authctxt *authctxt, const char *password)
                authctxt->force_pwchange = 1;
                return (1);
        } else {
+               if (!expire_checked) {
+                       expire_checked = 1;
+                       warn_expiry(authctxt, as);
+               }
                return (auth_close(as));
        }
 }