From c2e15f390d11d09bd9ae1f7be800967c818ac720 Mon Sep 17 00:00:00 2001
From: Jeremy Allison <jra@samba.org>
Date: Tue, 15 Nov 2011 13:30:22 -0800
Subject: [PATCH] Fix bug #8561 - Password change settings not fully observed.

---
 source3/include/proto.h          |    1 +
 source3/passdb/pdb_get_set.c     |   40 +++++++++++++++++++++++++++++++++----
 source3/rpc_server/srv_samr_nt.c |    2 +-
 3 files changed, 37 insertions(+), 6 deletions(-)

diff --git a/source3/include/proto.h b/source3/include/proto.h
index 2e04ca1..579fc1b 100644
--- a/source3/include/proto.h
+++ b/source3/include/proto.h
@@ -4492,6 +4492,7 @@ bool pdb_set_group_sid_from_rid (struct samu *sampass, uint32 grid, enum pdb_val
 
 /* The following definitions come from passdb/pdb_get_set.c  */
 
+bool pdb_is_password_change_time_max(time_t test_time);
 uint32 pdb_get_acct_ctrl(const struct samu *sampass);
 time_t pdb_get_logon_time(const struct samu *sampass);
 time_t pdb_get_logoff_time(const struct samu *sampass);
diff --git a/source3/passdb/pdb_get_set.c b/source3/passdb/pdb_get_set.c
index 6126517..678dc61 100644
--- a/source3/passdb/pdb_get_set.c
+++ b/source3/passdb/pdb_get_set.c
@@ -37,6 +37,36 @@
 #define PDB_NOT_QUITE_NULL ""
 
 /*********************************************************************
+ Test if a change time is a max value. Copes with old and new values
+ of max.
+ ********************************************************************/
+
+bool pdb_is_password_change_time_max(time_t test_time)
+{
+	if (test_time == get_time_t_max()) {
+		return true;
+	}
+#if (defined(SIZEOF_TIME_T) && (SIZEOF_TIME_T == 8))
+	if (test_time == 0x7FFFFFFFFFFFFFFFLL) {
+		return true;
+	}
+#endif
+	if (test_time == 0x7FFFFFFF) {
+		return true;
+	}
+	return false;
+}
+
+/*********************************************************************
+ Return an unchanging version of max password change time - 0x7FFFFFFF.
+ ********************************************************************/
+
+time_t pdb_password_change_time_max(void)
+{
+	return 0x7FFFFFFF;
+}
+
+/*********************************************************************
  Collection of get...() functions for struct samu.
  ********************************************************************/
 
@@ -84,7 +114,7 @@ time_t pdb_get_pass_can_change_time(const struct samu *sampass)
 	   we're trying to update this real value from the sampass
 	   to indicate that the user cannot change their password.  jmcd
 	*/
-	if (sampass->pass_can_change_time == get_time_t_max() &&
+	if (pdb_is_password_change_time_max(sampass->pass_can_change_time) &&
 	    pdb_get_init_flags(sampass, PDB_CANCHANGETIME) == PDB_CHANGED)
 		return sampass->pass_can_change_time;
 
@@ -110,18 +140,18 @@ time_t pdb_get_pass_must_change_time(const struct samu *sampass)
 		return (time_t) 0;
 
 	if (sampass->acct_ctrl & ACB_PWNOEXP)
-		return get_time_t_max();
+		return pdb_password_change_time_max();
 
 	if (!pdb_get_account_policy(PDB_POLICY_MAX_PASSWORD_AGE, &expire)
 	    || expire == (uint32)-1 || expire == 0) 
-		return get_time_t_max();
+		return pdb_password_change_time_max();
 
 	return sampass->pass_last_set_time + expire;
 }
 
 bool pdb_get_pass_can_change(const struct samu *sampass)
 {
-	if (sampass->pass_can_change_time == get_time_t_max() &&
+	if (pdb_is_password_change_time_max(sampass->pass_can_change_time) &&
 	    sampass->pass_last_set_time != 0)
 		return False;
 	return True;
@@ -1001,7 +1031,7 @@ bool pdb_set_backend_private_data(struct samu *sampass, void *private_data,
 bool pdb_set_pass_can_change(struct samu *sampass, bool canchange)
 {
 	return pdb_set_pass_can_change_time(sampass, 
-				     canchange ? 0 : get_time_t_max(),
+				     canchange ? 0 : pdb_password_change_time_max(),
 				     PDB_CHANGED);
 }
 
diff --git a/source3/rpc_server/srv_samr_nt.c b/source3/rpc_server/srv_samr_nt.c
index e98e4aa..487fb3d 100644
--- a/source3/rpc_server/srv_samr_nt.c
+++ b/source3/rpc_server/srv_samr_nt.c
@@ -2877,7 +2877,7 @@ static NTSTATUS get_user_info_21(TALLOC_CTX *mem_ctx,
 	unix_to_nt_time(&r->allow_password_change, pdb_get_pass_can_change_time(pw));
 
 	must_change_time = pdb_get_pass_must_change_time(pw);
-	if (must_change_time == get_time_t_max()) {
+	if (pdb_is_password_change_time_max(must_change_time)) {
 		unix_to_nt_time_abs(&force_password_change, must_change_time);
 	} else {
 		unix_to_nt_time(&force_password_change, must_change_time);
-- 
1.7.3.1