Fix flags in call of lookup_name() in srv_samr_nt.c: can_create().
[samba.git] / source / rpc_server / srv_samr_nt.c
index a70a49652e46b00d4e389f7e29e2b428d09548d3..cc4b4f330f29f08fdca1e855753269206c7732af 100644 (file)
@@ -14,7 +14,7 @@
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
+ *  the Free Software Foundation; either version 3 of the License, or
  *  (at your option) any later version.
  *
  *  This program is distributed in the hope that it will be useful,
@@ -23,8 +23,7 @@
  *  GNU General Public License for more details.
  *
  *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  */
 
 /*
                ( READ_CONTROL_ACCESS           | \
                  SA_RIGHT_USER_CHANGE_PASSWORD | \
                  SA_RIGHT_USER_SET_LOC_COM )
+#define SAMR_USR_RIGHTS_CANT_WRITE_PW \
+               ( READ_CONTROL_ACCESS | SA_RIGHT_USER_SET_LOC_COM )
 
 #define DISP_INFO_CACHE_TIMEOUT 10
 
 typedef struct disp_info {
-       struct disp_info *next, *prev;
-       TALLOC_CTX *mem_ctx;
        DOM_SID sid; /* identify which domain this is. */
-       BOOL builtin_domain; /* Quick flag to check if this is the builtin domain. */
+       bool builtin_domain; /* Quick flag to check if this is the builtin domain. */
        struct pdb_search *users; /* querydispinfo 1 and 4 */
        struct pdb_search *machines; /* querydispinfo 2 */
        struct pdb_search *groups; /* querydispinfo 3 and 5, enumgroups */
@@ -56,46 +55,49 @@ typedef struct disp_info {
        uint16 enum_acb_mask;
        struct pdb_search *enum_users; /* enumusers with a mask */
 
-
-       smb_event_id_t di_cache_timeout_event; /* cache idle timeout handler. */
+       struct timed_event *cache_timeout_event; /* cache idle timeout
+                                                 * handler. */
 } DISP_INFO;
 
 /* We keep a static list of these by SID as modern clients close down
    all resources between each request in a complete enumeration. */
 
-static DISP_INFO *disp_info_list;
-
 struct samr_info {
        /* for use by the \PIPE\samr policy */
        DOM_SID sid;
-       BOOL builtin_domain; /* Quick flag to check if this is the builtin domain. */
+       bool builtin_domain; /* Quick flag to check if this is the builtin domain. */
        uint32 status; /* some sort of flag.  best to record it.  comes from opnum 0x39 */
        uint32 acc_granted;
        DISP_INFO *disp_info;
        TALLOC_CTX *mem_ctx;
 };
 
-static struct generic_mapping sam_generic_mapping = {
+static const struct generic_mapping sam_generic_mapping = {
        GENERIC_RIGHTS_SAM_READ,
        GENERIC_RIGHTS_SAM_WRITE,
        GENERIC_RIGHTS_SAM_EXECUTE,
        GENERIC_RIGHTS_SAM_ALL_ACCESS};
-static struct generic_mapping dom_generic_mapping = {
+static const struct generic_mapping dom_generic_mapping = {
        GENERIC_RIGHTS_DOMAIN_READ,
        GENERIC_RIGHTS_DOMAIN_WRITE,
        GENERIC_RIGHTS_DOMAIN_EXECUTE,
        GENERIC_RIGHTS_DOMAIN_ALL_ACCESS};
-static struct generic_mapping usr_generic_mapping = {
+static const struct generic_mapping usr_generic_mapping = {
        GENERIC_RIGHTS_USER_READ,
        GENERIC_RIGHTS_USER_WRITE,
        GENERIC_RIGHTS_USER_EXECUTE,
        GENERIC_RIGHTS_USER_ALL_ACCESS};
-static struct generic_mapping grp_generic_mapping = {
+static const struct generic_mapping usr_nopwchange_generic_mapping = {
+       GENERIC_RIGHTS_USER_READ,
+       GENERIC_RIGHTS_USER_WRITE,
+       GENERIC_RIGHTS_USER_EXECUTE & ~SA_RIGHT_USER_CHANGE_PASSWORD,
+       GENERIC_RIGHTS_USER_ALL_ACCESS};
+static const struct generic_mapping grp_generic_mapping = {
        GENERIC_RIGHTS_GROUP_READ,
        GENERIC_RIGHTS_GROUP_WRITE,
        GENERIC_RIGHTS_GROUP_EXECUTE,
        GENERIC_RIGHTS_GROUP_ALL_ACCESS};
-static struct generic_mapping ali_generic_mapping = {
+static const struct generic_mapping ali_generic_mapping = {
        GENERIC_RIGHTS_ALIAS_READ,
        GENERIC_RIGHTS_ALIAS_WRITE,
        GENERIC_RIGHTS_ALIAS_EXECUTE,
@@ -105,7 +107,7 @@ static struct generic_mapping ali_generic_mapping = {
 *******************************************************************/
 
 static NTSTATUS make_samr_object_sd( TALLOC_CTX *ctx, SEC_DESC **psd, size_t *sd_size,
-                                     struct generic_mapping *map,
+                                     const struct generic_mapping *map,
                                     DOM_SID *sid, uint32 sid_access )
 {
        DOM_SID domadmin_sid;
@@ -247,49 +249,59 @@ static NTSTATUS access_check_samr_function(uint32 acc_granted, uint32 acc_requir
  Fetch or create a dispinfo struct.
 ********************************************************************/
 
-static DISP_INFO *get_samr_dispinfo_by_sid(DOM_SID *psid, const char *sid_str)
+static DISP_INFO *get_samr_dispinfo_by_sid(DOM_SID *psid)
 {
-       TALLOC_CTX *mem_ctx;
-       DISP_INFO *dpi;
+       /*
+        * We do a static cache for DISP_INFO's here. Explanation can be found
+        * in Jeremy's checkin message to r11793:
+        *
+        * Fix the SAMR cache so it works across completely insane
+        * client behaviour (ie.:
+        * open pipe/open SAMR handle/enumerate 0 - 1024
+        * close SAMR handle, close pipe.
+        * open pipe/open SAMR handle/enumerate 1024 - 2048...
+        * close SAMR handle, close pipe.
+        * And on ad-nausium. Amazing.... probably object-oriented
+        * client side programming in action yet again.
+        * This change should *massively* improve performance when
+        * enumerating users from an LDAP database.
+        * Jeremy.
+        *
+        * "Our" and the builtin domain are the only ones where we ever
+        * enumerate stuff, so just cache 2 entries.
+        */
+
+       static struct disp_info builtin_dispinfo;
+       static struct disp_info domain_dispinfo;
 
        /* There are two cases to consider here:
           1) The SID is a domain SID and we look for an equality match, or
           2) This is an account SID and so we return the DISP_INFO* for our 
              domain */
 
-       if ( psid && sid_check_is_in_our_domain( psid ) ) {
-               DEBUG(10,("get_samr_dispinfo_by_sid: Replacing %s with our domain SID\n",
-                       sid_str));
-               psid = get_global_sam_sid();
-       }
-
-       for (dpi = disp_info_list; dpi; dpi = dpi->next) {
-               if (sid_equal(psid, &dpi->sid)) {
-                       return dpi;
-               }
-       }
-
-       /* This struct is never free'd - I'm using talloc so we
-          can get a list out of smbd using smbcontrol. There will
-          be one of these per SID we're authorative for. JRA. */
-
-       mem_ctx = talloc_init("DISP_INFO for domain sid %s", sid_str);
-
-       if ((dpi = TALLOC_ZERO_P(mem_ctx, DISP_INFO)) == NULL)
+       if (psid == NULL) {
                return NULL;
+       }
 
-       dpi->mem_ctx = mem_ctx;
+       if (sid_check_is_builtin(psid) || sid_check_is_in_builtin(psid)) {
+               /*
+                * Necessary only once, but it does not really hurt.
+                */
+               sid_copy(&builtin_dispinfo.sid, &global_sid_Builtin);
 
-       if (psid) {
-               sid_copy( &dpi->sid, psid);
-               dpi->builtin_domain = sid_check_is_builtin(psid);
-       } else {
-               dpi->builtin_domain = False;
+               return &builtin_dispinfo;
        }
+               
+       if (sid_check_is_domain(psid) || sid_check_is_in_our_domain(psid)) {
+               /*
+                * Necessary only once, but it does not really hurt.
+                */
+               sid_copy(&domain_dispinfo.sid, get_global_sam_sid());
 
-       DLIST_ADD(disp_info_list, dpi);
+               return &domain_dispinfo;
+       }
 
-       return dpi;
+       return NULL;
 }
 
 /*******************************************************************
@@ -303,7 +315,7 @@ static struct samr_info *get_samr_info_by_sid(DOM_SID *psid)
        TALLOC_CTX *mem_ctx;
        
        if (psid) {
-               sid_to_string(sid_str, psid);
+               sid_to_fstring(sid_str, psid);
        } else {
                fstrcpy(sid_str,"(NULL)");
        }
@@ -323,12 +335,7 @@ static struct samr_info *get_samr_info_by_sid(DOM_SID *psid)
        }
        info->mem_ctx = mem_ctx;
 
-       info->disp_info = get_samr_dispinfo_by_sid(psid, sid_str);
-
-       if (!info->disp_info) {
-               talloc_destroy(mem_ctx);
-               return NULL;
-       }
+       info->disp_info = get_samr_dispinfo_by_sid(psid);
 
        return info;
 }
@@ -337,9 +344,10 @@ static struct samr_info *get_samr_info_by_sid(DOM_SID *psid)
  Function to free the per SID data.
  ********************************************************************/
 
-static void free_samr_cache(DISP_INFO *disp_info, const char *sid_str)
+static void free_samr_cache(DISP_INFO *disp_info)
 {
-       DEBUG(10,("free_samr_cache: deleting cache for SID %s\n", sid_str));
+       DEBUG(10, ("free_samr_cache: deleting cache for SID %s\n",
+                  sid_string_dbg(&disp_info->sid)));
 
        /* We need to become root here because the paged search might have to
         * tell the LDAP server we're not interested in the rest anymore. */
@@ -387,10 +395,8 @@ static void free_samr_info(void *ptr)
        /* Only free the dispinfo cache if no one bothered to set up
           a timeout. */
 
-       if (info->disp_info && info->disp_info->di_cache_timeout_event == (smb_event_id_t)0) {
-               fstring sid_str;
-               sid_to_string(sid_str, &info->disp_info->sid);
-               free_samr_cache(info->disp_info, sid_str);
+       if (info->disp_info && info->disp_info->cache_timeout_event == NULL) {
+               free_samr_cache(info->disp_info);
        }
 
        talloc_destroy(info->mem_ctx);
@@ -400,23 +406,18 @@ static void free_samr_info(void *ptr)
  Idle event handler. Throw away the disp info cache.
  ********************************************************************/
 
-static void disp_info_cache_idle_timeout_handler(void **private_data,
-                                       time_t *ev_interval,
-                                       time_t ev_now)
+static void disp_info_cache_idle_timeout_handler(struct event_context *ev_ctx,
+                                                struct timed_event *te,
+                                                const struct timeval *now,
+                                                void *private_data)
 {
-       fstring sid_str;
-       DISP_INFO *disp_info = (DISP_INFO *)(*private_data);
-
-       sid_to_string(sid_str, &disp_info->sid);
+       DISP_INFO *disp_info = (DISP_INFO *)private_data;
 
-       free_samr_cache(disp_info, sid_str);
+       TALLOC_FREE(disp_info->cache_timeout_event);
 
-       /* Remove the event. */
-       smb_unregister_idle_event(disp_info->di_cache_timeout_event);
-       disp_info->di_cache_timeout_event = (smb_event_id_t)0;
-
-       DEBUG(10,("disp_info_cache_idle_timeout_handler: caching timed out for SID %s at %u\n",
-               sid_str, (unsigned int)ev_now));
+       DEBUG(10, ("disp_info_cache_idle_timeout_handler: caching timed "
+                  "out\n"));
+       free_samr_cache(disp_info);
 }
 
 /*******************************************************************
@@ -425,24 +426,19 @@ static void disp_info_cache_idle_timeout_handler(void **private_data,
 
 static void set_disp_info_cache_timeout(DISP_INFO *disp_info, time_t secs_fromnow)
 {
-       fstring sid_str;
-
-       sid_to_string(sid_str, &disp_info->sid);
-
        /* Remove any pending timeout and update. */
 
-       if (disp_info->di_cache_timeout_event) {
-               smb_unregister_idle_event(disp_info->di_cache_timeout_event);
-               disp_info->di_cache_timeout_event = (smb_event_id_t)0;
-       }
+       TALLOC_FREE(disp_info->cache_timeout_event);
 
-       DEBUG(10,("set_disp_info_cache_timeout: caching enumeration for SID %s for %u seconds\n",
-               sid_str, (unsigned int)secs_fromnow ));
+       DEBUG(10,("set_disp_info_cache_timeout: caching enumeration for "
+                 "SID %s for %u seconds\n", sid_string_dbg(&disp_info->sid),
+                 (unsigned int)secs_fromnow ));
 
-       disp_info->di_cache_timeout_event =
-               smb_register_idle_event(disp_info_cache_idle_timeout_handler,
-                                       disp_info,
-                                       secs_fromnow);
+       disp_info->cache_timeout_event = event_add_timed(
+               smbd_event_context(), NULL,
+               timeval_current_ofs(secs_fromnow, 0),
+               "disp_info_cache_idle_timeout_handler",
+               disp_info_cache_idle_timeout_handler, (void *)disp_info);
 }
 
 /*******************************************************************
@@ -452,18 +448,13 @@ static void set_disp_info_cache_timeout(DISP_INFO *disp_info, time_t secs_fromno
 
 static void force_flush_samr_cache(DISP_INFO *disp_info)
 {
-       if (disp_info) {
-               fstring sid_str;
-
-               sid_to_string(sid_str, &disp_info->sid);
-               if (disp_info->di_cache_timeout_event) {
-                       smb_unregister_idle_event(disp_info->di_cache_timeout_event);
-                       disp_info->di_cache_timeout_event = (smb_event_id_t)0;
-                       DEBUG(10,("force_flush_samr_cache: clearing idle event for SID %s\n",
-                               sid_str));
-               }
-               free_samr_cache(disp_info, sid_str);
+       if ((disp_info == NULL) || (disp_info->cache_timeout_event == NULL)) {
+               return;
        }
+
+       DEBUG(10,("force_flush_samr_cache: clearing idle event\n"));
+       TALLOC_FREE(disp_info->cache_timeout_event);
+       free_samr_cache(disp_info);
 }
 
 /*******************************************************************
@@ -656,20 +647,10 @@ NTSTATUS _samr_get_usrdom_pwinfo(pipes_struct *p, SAMR_Q_GET_USRDOM_PWINFO *q_u,
        return r_u->status;
 }
 
-/*******************************************************************
- _samr_set_sec_obj
- ********************************************************************/
-
-NTSTATUS _samr_set_sec_obj(pipes_struct *p, SAMR_Q_SET_SEC_OBJ *q_u, SAMR_R_SET_SEC_OBJ *r_u)
-{
-       DEBUG(0,("_samr_set_sec_obj: Not yet implemented!\n"));
-       return NT_STATUS_NOT_IMPLEMENTED;
-}
-
 /*******************************************************************
 ********************************************************************/
 
-static BOOL get_lsa_policy_samr_sid( pipes_struct *p, POLICY_HND *pol, 
+static bool get_lsa_policy_samr_sid( pipes_struct *p, POLICY_HND *pol, 
                                        DOM_SID *sid, uint32 *acc_granted,
                                        DISP_INFO **ppdisp_info)
 {
@@ -691,6 +672,102 @@ static BOOL get_lsa_policy_samr_sid( pipes_struct *p, POLICY_HND *pol,
        return True;
 }
 
+/*******************************************************************
+ _samr_set_sec_obj
+ ********************************************************************/
+
+NTSTATUS _samr_set_sec_obj(pipes_struct *p, SAMR_Q_SET_SEC_OBJ *q_u, SAMR_R_SET_SEC_OBJ *r_u)
+{
+       DOM_SID pol_sid;
+       uint32 acc_granted, i;
+       SEC_ACL *dacl;
+       bool ret;
+       struct samu *sampass=NULL;
+       NTSTATUS status;
+
+       r_u->status = NT_STATUS_OK;
+
+       if (!get_lsa_policy_samr_sid(p, &q_u->pol, &pol_sid, &acc_granted, NULL))
+               return NT_STATUS_INVALID_HANDLE;
+
+       if (!(sampass = samu_new( p->mem_ctx))) {
+               DEBUG(0,("No memory!\n"));
+               return NT_STATUS_NO_MEMORY;
+       }
+
+       /* get the user record */
+       become_root();
+       ret = pdb_getsampwsid(sampass, &pol_sid);
+       unbecome_root();
+
+       if (!ret) {
+               DEBUG(4, ("User %s not found\n", sid_string_dbg(&pol_sid)));
+               TALLOC_FREE(sampass);
+               return NT_STATUS_INVALID_HANDLE;
+       }
+
+       dacl = q_u->buf->sd->dacl;
+       for (i=0; i < dacl->num_aces; i++) {
+               if (sid_equal(&pol_sid, &dacl->aces[i].trustee)) {
+                       ret = pdb_set_pass_can_change(sampass, 
+                               (dacl->aces[i].access_mask & 
+                                SA_RIGHT_USER_CHANGE_PASSWORD) ? 
+                                                     True: False);
+                       break;
+               }
+       }
+
+       if (!ret) {
+               TALLOC_FREE(sampass);
+               return NT_STATUS_ACCESS_DENIED;
+       }
+
+       status = access_check_samr_function(acc_granted, SA_RIGHT_USER_SET_ATTRIBUTES, "_samr_set_sec_obj");
+       if (NT_STATUS_IS_OK(status)) {
+               become_root();
+               status = pdb_update_sam_account(sampass);
+               unbecome_root();
+       }
+
+       TALLOC_FREE(sampass);
+
+       return status;
+}
+
+/*******************************************************************
+  build correct perms based on policies and password times for _samr_query_sec_obj
+*******************************************************************/
+static bool check_change_pw_access(TALLOC_CTX *mem_ctx, DOM_SID *user_sid)
+{
+       struct samu *sampass=NULL;
+       bool ret;
+
+       if ( !(sampass = samu_new( mem_ctx )) ) {
+               DEBUG(0,("No memory!\n"));
+               return False;
+       }
+
+       become_root();
+       ret = pdb_getsampwsid(sampass, user_sid);
+       unbecome_root();
+
+       if (ret == False) {
+               DEBUG(4,("User %s not found\n", sid_string_dbg(user_sid)));
+               TALLOC_FREE(sampass);
+               return False;
+       }
+
+       DEBUG(3,("User:[%s]\n",  pdb_get_username(sampass) ));
+
+       if (pdb_get_pass_can_change(sampass)) {
+               TALLOC_FREE(sampass);
+               return True;
+       }
+       TALLOC_FREE(sampass);
+       return False;
+}
+
+
 /*******************************************************************
  _samr_query_sec_obj
  ********************************************************************/
@@ -698,7 +775,6 @@ static BOOL get_lsa_policy_samr_sid( pipes_struct *p, POLICY_HND *pol,
 NTSTATUS _samr_query_sec_obj(pipes_struct *p, SAMR_Q_QUERY_SEC_OBJ *q_u, SAMR_R_QUERY_SEC_OBJ *r_u)
 {
        DOM_SID pol_sid;
-       fstring str_sid;
        SEC_DESC * psd = NULL;
        uint32 acc_granted;
        size_t sd_size;
@@ -709,7 +785,8 @@ NTSTATUS _samr_query_sec_obj(pipes_struct *p, SAMR_Q_QUERY_SEC_OBJ *q_u, SAMR_R_
        if (!get_lsa_policy_samr_sid(p, &q_u->user_pol, &pol_sid, &acc_granted, NULL))
                return NT_STATUS_INVALID_HANDLE;
 
-       DEBUG(10,("_samr_query_sec_obj: querying security on SID: %s\n", sid_to_string(str_sid, &pol_sid)));
+       DEBUG(10,("_samr_query_sec_obj: querying security on SID: %s\n",
+                 sid_string_dbg(&pol_sid)));
 
        /* Check what typ of SID is beeing queried (e.g Domain SID, User SID, Group SID) */
 
@@ -719,19 +796,28 @@ NTSTATUS _samr_query_sec_obj(pipes_struct *p, SAMR_Q_QUERY_SEC_OBJ *q_u, SAMR_R_
                r_u->status = make_samr_object_sd(p->mem_ctx, &psd, &sd_size, &sam_generic_mapping, NULL, 0);
        } else if (sid_equal(&pol_sid,get_global_sam_sid())) { 
                /* check if it is our domain SID */
-               DEBUG(5,("_samr_query_sec_obj: querying security on Domain with SID: %s\n", sid_to_string(str_sid, &pol_sid)));
+               DEBUG(5,("_samr_query_sec_obj: querying security on Domain "
+                        "with SID: %s\n", sid_string_dbg(&pol_sid)));
                r_u->status = make_samr_object_sd(p->mem_ctx, &psd, &sd_size, &dom_generic_mapping, NULL, 0);
        } else if (sid_equal(&pol_sid,&global_sid_Builtin)) {
                /* check if it is the Builtin  Domain */
                /* TODO: Builtin probably needs a different SD with restricted write access*/
-               DEBUG(5,("_samr_query_sec_obj: querying security on Builtin Domain with SID: %s\n", sid_to_string(str_sid, &pol_sid)));
+               DEBUG(5,("_samr_query_sec_obj: querying security on Builtin "
+                        "Domain with SID: %s\n", sid_string_dbg(&pol_sid)));
                r_u->status = make_samr_object_sd(p->mem_ctx, &psd, &sd_size, &dom_generic_mapping, NULL, 0);
        } else if (sid_check_is_in_our_domain(&pol_sid) ||
                 sid_check_is_in_builtin(&pol_sid)) {
                /* TODO: different SDs have to be generated for aliases groups and users.
                         Currently all three get a default user SD  */
-               DEBUG(10,("_samr_query_sec_obj: querying security on Object with SID: %s\n", sid_to_string(str_sid, &pol_sid)));
-               r_u->status = make_samr_object_sd(p->mem_ctx, &psd, &sd_size, &usr_generic_mapping, &pol_sid, SAMR_USR_RIGHTS_WRITE_PW);
+               DEBUG(10,("_samr_query_sec_obj: querying security on Object "
+                         "with SID: %s\n", sid_string_dbg(&pol_sid)));
+               if (check_change_pw_access(p->mem_ctx, &pol_sid)) {
+                       r_u->status = make_samr_object_sd(p->mem_ctx, &psd, &sd_size, &usr_generic_mapping, 
+                                                         &pol_sid, SAMR_USR_RIGHTS_WRITE_PW);
+               } else {
+                       r_u->status = make_samr_object_sd(p->mem_ctx, &psd, &sd_size, &usr_nopwchange_generic_mapping, 
+                                                         &pol_sid, SAMR_USR_RIGHTS_CANT_WRITE_PW);
+               }
        } else {
                return NT_STATUS_OBJECT_TYPE_MISMATCH;
        }
@@ -769,7 +855,7 @@ static NTSTATUS make_user_sam_entry_list(TALLOC_CTX *ctx, SAM_ENTRY **sam_pp,
        uni_name = TALLOC_ZERO_ARRAY(ctx, UNISTR2, num_entries);
 
        if (sam == NULL || uni_name == NULL) {
-               DEBUG(0, ("make_user_sam_entry_list: talloc_zero failed!\n"));
+               DEBUG(0, ("make_user_sam_entry_list: TALLOC_ZERO failed!\n"));
                return NT_STATUS_NO_MEMORY;
        }
 
@@ -864,6 +950,7 @@ NTSTATUS _samr_enum_dom_users(pipes_struct *p, SAMR_Q_ENUM_DOM_USERS *q_u,
        if (num_account == 0) {
                DEBUG(5, ("_samr_enum_dom_users: enumeration handle over "
                          "total entries\n"));
+               init_samr_r_enum_dom_users(r_u, q_u->start_idx, 0);
                return NT_STATUS_OK;
        }
 
@@ -1016,7 +1103,7 @@ NTSTATUS _samr_enum_dom_aliases(pipes_struct *p, SAMR_Q_ENUM_DOM_ALIASES *q_u, S
                return r_u->status;
 
        DEBUG(5,("samr_reply_enum_dom_aliases: sid %s\n",
-                sid_string_static(&info->sid)));
+                sid_string_dbg(&info->sid)));
 
        become_root();
 
@@ -1268,7 +1355,7 @@ NTSTATUS _samr_query_aliasinfo(pipes_struct *p, SAMR_Q_QUERY_ALIASINFO *q_u, SAM
        DOM_SID   sid;
        struct acct_info info;
        uint32    acc_granted;
-       BOOL ret;
+       NTSTATUS status;
 
        r_u->status = NT_STATUS_OK;
 
@@ -1282,11 +1369,11 @@ NTSTATUS _samr_query_aliasinfo(pipes_struct *p, SAMR_Q_QUERY_ALIASINFO *q_u, SAM
        }
 
        become_root();
-       ret = pdb_get_aliasinfo(&sid, &info);
+       status = pdb_get_aliasinfo(&sid, &info);
        unbecome_root();
        
-       if ( !ret )
-               return NT_STATUS_NO_SUCH_ALIAS;
+       if ( !NT_STATUS_IS_OK(status))
+               return status;
 
        if ( !(r_u->ctr = TALLOC_ZERO_P( p->mem_ctx, ALIAS_INFO_CTR )) ) 
                return NT_STATUS_NO_MEMORY;
@@ -1377,11 +1464,10 @@ NTSTATUS _samr_query_aliasinfo(pipes_struct *p, SAMR_Q_QUERY_ALIASINFO *q_u, SAM
 NTSTATUS _samr_lookup_names(pipes_struct *p, SAMR_Q_LOOKUP_NAMES *q_u, SAMR_R_LOOKUP_NAMES *r_u)
 {
        uint32 rid[MAX_SAM_ENTRIES];
-       enum SID_NAME_USE type[MAX_SAM_ENTRIES];
+       enum lsa_SidType type[MAX_SAM_ENTRIES];
        int i;
        int num_rids = q_u->num_names2;
        DOM_SID pol_sid;
-       fstring sid_str;
        uint32  acc_granted;
 
        r_u->status = NT_STATUS_OK;
@@ -1405,7 +1491,8 @@ NTSTATUS _samr_lookup_names(pipes_struct *p, SAMR_Q_LOOKUP_NAMES *q_u, SAMR_R_LO
                DEBUG(5,("_samr_lookup_names: truncating entries to %d\n", num_rids));
        }
 
-       DEBUG(5,("_samr_lookup_names: looking name on SID %s\n", sid_to_string(sid_str, &pol_sid)));
+       DEBUG(5,("_samr_lookup_names: looking name on SID %s\n",
+                sid_string_dbg(&pol_sid)));
        
        for (i = 0; i < num_rids; i++) {
                fstring name;
@@ -1578,7 +1665,7 @@ NTSTATUS _samr_chgpasswd_user3(pipes_struct *p, SAMR_Q_CHGPASSWD_USER3 *q_u, SAM
 makes a SAMR_R_LOOKUP_RIDS structure.
 ********************************************************************/
 
-static BOOL make_samr_lookup_rids(TALLOC_CTX *ctx, uint32 num_names,
+static bool make_samr_lookup_rids(TALLOC_CTX *ctx, uint32 num_names,
                                  const char **names, UNIHDR **pp_hdr_name,
                                  UNISTR2 **pp_uni_name)
 {
@@ -1618,12 +1705,12 @@ static BOOL make_samr_lookup_rids(TALLOC_CTX *ctx, uint32 num_names,
 NTSTATUS _samr_lookup_rids(pipes_struct *p, SAMR_Q_LOOKUP_RIDS *q_u, SAMR_R_LOOKUP_RIDS *r_u)
 {
        const char **names;
-       enum SID_NAME_USE *attrs = NULL;
+       enum lsa_SidType *attrs = NULL;
        uint32 *wire_attrs = NULL;
        UNIHDR *hdr_name = NULL;
        UNISTR2 *uni_name = NULL;
        DOM_SID pol_sid;
-       int num_rids = q_u->num_rids1;
+       int num_rids = (int)q_u->num_rids1;
        uint32 acc_granted;
        int i;
 
@@ -1641,12 +1728,18 @@ NTSTATUS _samr_lookup_rids(pipes_struct *p, SAMR_Q_LOOKUP_RIDS *q_u, SAMR_R_LOOK
                return NT_STATUS_UNSUCCESSFUL;
        }
 
-       names = TALLOC_ZERO_ARRAY(p->mem_ctx, const char *, num_rids);
-       attrs = TALLOC_ZERO_ARRAY(p->mem_ctx, enum SID_NAME_USE, num_rids);
-       wire_attrs = TALLOC_ZERO_ARRAY(p->mem_ctx, uint32, num_rids);
+       if (num_rids) {
+               names = TALLOC_ZERO_ARRAY(p->mem_ctx, const char *, num_rids);
+               attrs = TALLOC_ZERO_ARRAY(p->mem_ctx, enum lsa_SidType, num_rids);
+               wire_attrs = TALLOC_ZERO_ARRAY(p->mem_ctx, uint32, num_rids);
 
-       if ((num_rids != 0) && ((names == NULL) || (attrs == NULL) || (wire_attrs==NULL)))
-               return NT_STATUS_NO_MEMORY;
+               if ((names == NULL) || (attrs == NULL) || (wire_attrs==NULL))
+                       return NT_STATUS_NO_MEMORY;
+       } else {
+               names = NULL;
+               attrs = NULL;
+               wire_attrs = NULL;
+       }
 
        become_root();  /* lookup_sid can require root privs */
        r_u->status = pdb_lookup_rids(&pol_sid, num_rids, q_u->rid,
@@ -1661,7 +1754,7 @@ NTSTATUS _samr_lookup_rids(pipes_struct *p, SAMR_Q_LOOKUP_RIDS *q_u, SAMR_R_LOOK
                                  &hdr_name, &uni_name))
                return NT_STATUS_NO_MEMORY;
 
-       /* Convert from enum SID_NAME_USE to uint32 for wire format. */
+       /* Convert from enum lsa_SidType to uint32 for wire format. */
        for (i = 0; i < num_rids; i++) {
                wire_attrs[i] = (uint32)attrs[i];
        }
@@ -1688,7 +1781,7 @@ NTSTATUS _samr_open_user(pipes_struct *p, SAMR_Q_OPEN_USER *q_u, SAMR_R_OPEN_USE
        uint32    acc_granted;
        uint32    des_access = q_u->access_mask;
        size_t    sd_size;
-       BOOL ret;
+       bool ret;
        NTSTATUS nt_status;
        SE_PRIV se_rights;
 
@@ -1759,7 +1852,7 @@ NTSTATUS _samr_open_user(pipes_struct *p, SAMR_Q_OPEN_USER *q_u, SAMR_R_OPEN_USE
 static NTSTATUS get_user_info_7(TALLOC_CTX *mem_ctx, SAM_USER_INFO_7 *id7, DOM_SID *user_sid)
 {
        struct samu *smbpass=NULL;
-       BOOL ret;
+       bool ret;
 
        if ( !(smbpass = samu_new( mem_ctx )) ) {
                return NT_STATUS_NO_MEMORY;
@@ -1770,7 +1863,7 @@ static NTSTATUS get_user_info_7(TALLOC_CTX *mem_ctx, SAM_USER_INFO_7 *id7, DOM_S
        unbecome_root();
 
        if ( !ret ) {
-               DEBUG(4,("User %s not found\n", sid_string_static(user_sid)));
+               DEBUG(4,("User %s not found\n", sid_string_dbg(user_sid)));
                return NT_STATUS_NO_SUCH_USER;
        }
 
@@ -1790,7 +1883,7 @@ static NTSTATUS get_user_info_7(TALLOC_CTX *mem_ctx, SAM_USER_INFO_7 *id7, DOM_S
 static NTSTATUS get_user_info_9(TALLOC_CTX *mem_ctx, SAM_USER_INFO_9 * id9, DOM_SID *user_sid)
 {
        struct samu *smbpass=NULL;
-       BOOL ret;
+       bool ret;
 
        if ( !(smbpass = samu_new( mem_ctx )) ) {
                return NT_STATUS_NO_MEMORY;
@@ -1801,7 +1894,7 @@ static NTSTATUS get_user_info_9(TALLOC_CTX *mem_ctx, SAM_USER_INFO_9 * id9, DOM_
        unbecome_root();
 
        if (ret==False) {
-               DEBUG(4,("User %s not found\n", sid_string_static(user_sid)));
+               DEBUG(4,("User %s not found\n", sid_string_dbg(user_sid)));
                return NT_STATUS_NO_SUCH_USER;
        }
 
@@ -1822,7 +1915,7 @@ static NTSTATUS get_user_info_9(TALLOC_CTX *mem_ctx, SAM_USER_INFO_9 * id9, DOM_
 static NTSTATUS get_user_info_16(TALLOC_CTX *mem_ctx, SAM_USER_INFO_16 *id16, DOM_SID *user_sid)
 {
        struct samu *smbpass=NULL;
-       BOOL ret;
+       bool ret;
 
        if ( !(smbpass = samu_new( mem_ctx )) ) {
                return NT_STATUS_NO_MEMORY;
@@ -1833,7 +1926,7 @@ static NTSTATUS get_user_info_16(TALLOC_CTX *mem_ctx, SAM_USER_INFO_16 *id16, DO
        unbecome_root();
 
        if (ret==False) {
-               DEBUG(4,("User %s not found\n", sid_string_static(user_sid)));
+               DEBUG(4,("User %s not found\n", sid_string_dbg(user_sid)));
                return NT_STATUS_NO_SUCH_USER;
        }
 
@@ -1856,7 +1949,7 @@ static NTSTATUS get_user_info_16(TALLOC_CTX *mem_ctx, SAM_USER_INFO_16 *id16, DO
 static NTSTATUS get_user_info_18(pipes_struct *p, TALLOC_CTX *mem_ctx, SAM_USER_INFO_18 * id18, DOM_SID *user_sid)
 {
        struct samu *smbpass=NULL;
-       BOOL ret;
+       bool ret;
 
        if (p->auth.auth_type != PIPE_AUTH_TYPE_NTLMSSP || p->auth.auth_type != PIPE_AUTH_TYPE_SPNEGO_NTLMSSP) {
                return NT_STATUS_ACCESS_DENIED;
@@ -1877,7 +1970,7 @@ static NTSTATUS get_user_info_18(pipes_struct *p, TALLOC_CTX *mem_ctx, SAM_USER_
        ret = pdb_getsampwsid(smbpass, user_sid);
 
        if (ret == False) {
-               DEBUG(4, ("User %s not found\n", sid_string_static(user_sid)));
+               DEBUG(4, ("User %s not found\n", sid_string_dbg(user_sid)));
                TALLOC_FREE(smbpass);
                return (geteuid() == (uid_t)0) ? NT_STATUS_NO_SUCH_USER : NT_STATUS_ACCESS_DENIED;
        }
@@ -1904,7 +1997,7 @@ static NTSTATUS get_user_info_18(pipes_struct *p, TALLOC_CTX *mem_ctx, SAM_USER_
 static NTSTATUS get_user_info_20(TALLOC_CTX *mem_ctx, SAM_USER_INFO_20 *id20, DOM_SID *user_sid)
 {
        struct samu *sampass=NULL;
-       BOOL ret;
+       bool ret;
 
        if ( !(sampass = samu_new( mem_ctx )) ) {
                return NT_STATUS_NO_MEMORY;
@@ -1915,7 +2008,7 @@ static NTSTATUS get_user_info_20(TALLOC_CTX *mem_ctx, SAM_USER_INFO_20 *id20, DO
        unbecome_root();
 
        if (ret == False) {
-               DEBUG(4,("User %s not found\n", sid_string_static(user_sid)));
+               DEBUG(4,("User %s not found\n", sid_string_dbg(user_sid)));
                return NT_STATUS_NO_SUCH_USER;
        }
 
@@ -1939,7 +2032,7 @@ static NTSTATUS get_user_info_21(TALLOC_CTX *mem_ctx, SAM_USER_INFO_21 *id21,
                                 DOM_SID *user_sid, DOM_SID *domain_sid)
 {
        struct samu *sampass=NULL;
-       BOOL ret;
+       bool ret;
        NTSTATUS nt_status;
 
        if ( !(sampass = samu_new( mem_ctx )) ) {
@@ -1951,7 +2044,7 @@ static NTSTATUS get_user_info_21(TALLOC_CTX *mem_ctx, SAM_USER_INFO_21 *id21,
        unbecome_root();
 
        if (ret == False) {
-               DEBUG(4,("User %s not found\n", sid_string_static(user_sid)));
+               DEBUG(4,("User %s not found\n", sid_string_dbg(user_sid)));
                return NT_STATUS_NO_SUCH_USER;
        }
 
@@ -1991,7 +2084,8 @@ NTSTATUS _samr_query_userinfo(pipes_struct *p, SAMR_Q_QUERY_USERINFO *q_u, SAMR_
        if (!sid_check_is_in_our_domain(&info->sid))
                return NT_STATUS_OBJECT_TYPE_MISMATCH;
 
-       DEBUG(5,("_samr_query_userinfo: sid:%s\n", sid_string_static(&info->sid)));
+       DEBUG(5,("_samr_query_userinfo: sid:%s\n",
+                sid_string_dbg(&info->sid)));
 
        ctr = TALLOC_ZERO_P(p->mem_ctx, SAM_USERINFO_CTR);
        if (!ctr)
@@ -2083,8 +2177,9 @@ NTSTATUS _samr_query_usergroups(pipes_struct *p, SAMR_Q_QUERY_USERGROUPS *q_u, S
        gid_t *unix_gids;
        size_t i, num_gids;
        uint32 acc_granted;
-       BOOL ret;
+       bool ret;
        NTSTATUS result;
+       bool success = False;
 
        /*
         * from the SID in the request:
@@ -2123,41 +2218,43 @@ NTSTATUS _samr_query_usergroups(pipes_struct *p, SAMR_Q_QUERY_USERGROUPS *q_u, S
 
        if (!ret) {
                DEBUG(10, ("pdb_getsampwsid failed for %s\n",
-                          sid_string_static(&sid)));
+                          sid_string_dbg(&sid)));
                return NT_STATUS_NO_SUCH_USER;
        }
 
        sids = NULL;
 
+       /* make both calls inside the root block */
        become_root();
        result = pdb_enum_group_memberships(p->mem_ctx, sam_pass,
                                            &sids, &unix_gids, &num_groups);
+       if ( NT_STATUS_IS_OK(result) ) {
+               success = sid_peek_check_rid(get_global_sam_sid(), 
+                                            pdb_get_group_sid(sam_pass),
+                                            &primary_group_rid);
+       }
        unbecome_root();
 
        if (!NT_STATUS_IS_OK(result)) {
                DEBUG(10, ("pdb_enum_group_memberships failed for %s\n",
-                          sid_string_static(&sid)));
+                          sid_string_dbg(&sid)));
                return result;
        }
 
-       gids = NULL;
-       num_gids = 0;
-
-       dom_gid.attr = (SE_GROUP_MANDATORY|SE_GROUP_ENABLED_BY_DEFAULT|
-                       SE_GROUP_ENABLED);
-
-       if (!sid_peek_check_rid(get_global_sam_sid(),
-                               pdb_get_group_sid(sam_pass),
-                               &primary_group_rid)) {
+       if ( !success ) {
                DEBUG(5, ("Group sid %s for user %s not in our domain\n",
-                         sid_string_static(pdb_get_group_sid(sam_pass)),
+                         sid_string_dbg(pdb_get_group_sid(sam_pass)),
                          pdb_get_username(sam_pass)));
                TALLOC_FREE(sam_pass);
                return NT_STATUS_INTERNAL_DB_CORRUPTION;
        }
 
-       dom_gid.g_rid = primary_group_rid;
+       gids = NULL;
+       num_gids = 0;
 
+       dom_gid.attr = (SE_GROUP_MANDATORY|SE_GROUP_ENABLED_BY_DEFAULT|
+                       SE_GROUP_ENABLED);
+       dom_gid.g_rid = primary_group_rid;
        ADD_TO_ARRAY(p->mem_ctx, DOM_GID, dom_gid, &gids, &num_gids);
 
        for (i=0; i<num_groups; i++) {
@@ -2165,7 +2262,7 @@ NTSTATUS _samr_query_usergroups(pipes_struct *p, SAMR_Q_QUERY_USERGROUPS *q_u, S
                if (!sid_peek_check_rid(get_global_sam_sid(),
                                        &(sids[i]), &dom_gid.g_rid)) {
                        DEBUG(10, ("Found sid %s not in our domain\n",
-                                  sid_string_static(&sids[i])));
+                                  sid_string_dbg(&sids[i])));
                        continue;
                }
 
@@ -2391,15 +2488,15 @@ NTSTATUS _samr_query_domain_info(pipes_struct *p,
 
 static NTSTATUS can_create(TALLOC_CTX *mem_ctx, const char *new_name)
 {
-       enum SID_NAME_USE type;
-       BOOL result;
+       enum lsa_SidType type;
+       bool result;
 
        DEBUG(10, ("Checking whether [%s] can be created\n", new_name));
 
        become_root();
-       /* Lookup in our local databases (only LOOKUP_NAME_ISOLATED set)
+       /* Lookup in our local databases (LOOKUP_NAME_REMOTE not set)
         * whether the name already exists */
-       result = lookup_name(mem_ctx, new_name, LOOKUP_NAME_ISOLATED,
+       result = lookup_name(mem_ctx, new_name, LOOKUP_NAME_LOCAL,
                             NULL, NULL, NULL, &type);
        unbecome_root();
 
@@ -2443,7 +2540,7 @@ NTSTATUS _samr_create_user(pipes_struct *p, SAMR_Q_CREATE_USER *q_u,
        size_t    sd_size;
        /* check this, when giving away 'add computer to domain' privs */
        uint32    des_access = GENERIC_RIGHTS_USER_ALL_ACCESS;
-       BOOL can_add_account = False;
+       bool can_add_account = False;
        SE_PRIV se_rights;
        DISP_INFO *disp_info = NULL;
 
@@ -2803,7 +2900,8 @@ NTSTATUS _samr_lookup_domain(pipes_struct *p, SAMR_Q_LOOKUP_DOMAIN *q_u, SAMR_R_
                }
        }
 
-       DEBUG(2,("Returning domain sid for domain %s -> %s\n", domain_name, sid_string_static(&sid)));
+       DEBUG(2,("Returning domain sid for domain %s -> %s\n", domain_name,
+                sid_string_dbg(&sid)));
 
        init_samr_r_lookup_domain(r_u, &sid, r_u->status);
 
@@ -2814,7 +2912,7 @@ NTSTATUS _samr_lookup_domain(pipes_struct *p, SAMR_Q_LOOKUP_DOMAIN *q_u, SAMR_R_
 makes a SAMR_R_ENUM_DOMAINS structure.
 ********************************************************************/
 
-static BOOL make_enum_domains(TALLOC_CTX *ctx, SAM_ENTRY **pp_sam,
+static bool make_enum_domains(TALLOC_CTX *ctx, SAM_ENTRY **pp_sam,
                        UNISTR2 **pp_uni_name, uint32 num_sam_entries, fstring doms[])
 {
        uint32 i;
@@ -2933,8 +3031,8 @@ NTSTATUS _samr_open_alias(pipes_struct *p, SAMR_Q_OPEN_ALIAS *q_u, SAMR_R_OPEN_A
 
        {
                /* Check we actually have the requested alias */
-               enum SID_NAME_USE type;
-               BOOL result;
+               enum lsa_SidType type;
+               bool result;
                gid_t gid;
 
                become_root();
@@ -3011,7 +3109,7 @@ static NTSTATUS set_user_info_7(TALLOC_CTX *mem_ctx,
  set_user_info_16
  ********************************************************************/
 
-static BOOL set_user_info_16(const SAM_USER_INFO_16 *id16, struct samu *pwd)
+static bool set_user_info_16(const SAM_USER_INFO_16 *id16, struct samu *pwd)
 {
        if (id16 == NULL) {
                DEBUG(5, ("set_user_info_16: NULL id16\n"));
@@ -3039,7 +3137,7 @@ static BOOL set_user_info_16(const SAM_USER_INFO_16 *id16, struct samu *pwd)
  set_user_info_18
  ********************************************************************/
 
-static BOOL set_user_info_18(SAM_USER_INFO_18 *id18, struct samu *pwd)
+static bool set_user_info_18(SAM_USER_INFO_18 *id18, struct samu *pwd)
 {
 
        if (id18 == NULL) {
@@ -3056,7 +3154,7 @@ static BOOL set_user_info_18(SAM_USER_INFO_18 *id18, struct samu *pwd)
                TALLOC_FREE(pwd);
                return False;
        }
-       if (!pdb_set_pass_changed_now (pwd)) {
+       if (!pdb_set_pass_last_set_time (pwd, time(NULL), PDB_CHANGED)) {
                TALLOC_FREE(pwd);
                return False; 
        }
@@ -3074,7 +3172,7 @@ static BOOL set_user_info_18(SAM_USER_INFO_18 *id18, struct samu *pwd)
  set_user_info_20
  ********************************************************************/
 
-static BOOL set_user_info_20(SAM_USER_INFO_20 *id20, struct samu *pwd)
+static bool set_user_info_20(SAM_USER_INFO_20 *id20, struct samu *pwd)
 {
        if (id20 == NULL) {
                DEBUG(5, ("set_user_info_20: NULL id20\n"));
@@ -3181,33 +3279,37 @@ static NTSTATUS set_user_info_21(TALLOC_CTX *mem_ctx, SAM_USER_INFO_21 *id21,
 static NTSTATUS set_user_info_23(TALLOC_CTX *mem_ctx, SAM_USER_INFO_23 *id23,
                                 struct samu *pwd)
 {
-       pstring plaintext_buf;
-       uint32 len;
+       char *plaintext_buf = NULL;
+       uint32 len = 0;
        uint16 acct_ctrl;
        NTSTATUS status;
+
        if (id23 == NULL) {
                DEBUG(5, ("set_user_info_23: NULL id23\n"));
                return NT_STATUS_INVALID_PARAMETER;
        }
+
        DEBUG(5, ("Attempting administrator password change (level 23) for user %s\n",
                  pdb_get_username(pwd)));
 
        acct_ctrl = pdb_get_acct_ctrl(pwd);
 
-       if (!decode_pw_buffer(id23->pass, plaintext_buf, 256, &len, STR_UNICODE)) {
+       if (!decode_pw_buffer(mem_ctx,
+                               id23->pass,
+                               &plaintext_buf,
+                               &len,
+                               STR_UNICODE)) {
                TALLOC_FREE(pwd);
                return NT_STATUS_INVALID_PARAMETER;
        }
-  
+
        if (!pdb_set_plaintext_passwd (pwd, plaintext_buf)) {
                TALLOC_FREE(pwd);
                return NT_STATUS_ACCESS_DENIED;
        }
+
        copy_id23_to_sam_passwd(pwd, id23);
+
        /* if it's a trust account, don't update /etc/passwd */
        if (    ( (acct_ctrl &  ACB_DOMTRUST) == ACB_DOMTRUST ) ||
                ( (acct_ctrl &  ACB_WSTRUST) ==  ACB_WSTRUST) ||
@@ -3226,16 +3328,16 @@ static NTSTATUS set_user_info_23(TALLOC_CTX *mem_ctx, SAM_USER_INFO_23 *id23,
                        if ((passwd = Get_Pwnam(pdb_get_username(pwd))) == NULL) {
                                DEBUG(1, ("chgpasswd: Username does not exist in system !?!\n"));
                        }
-                       
+
                        if(!chgpasswd(pdb_get_username(pwd), passwd, "", plaintext_buf, True)) {
                                TALLOC_FREE(pwd);
                                return NT_STATUS_ACCESS_DENIED;
                        }
                }
        }
-       ZERO_STRUCT(plaintext_buf);
+
+       memset(plaintext_buf, '\0', strlen(plaintext_buf));
+
        if (IS_SAM_CHANGED(pwd, PDB_GROUPSID) &&
            (!NT_STATUS_IS_OK(status =  pdb_set_unix_primary_group(mem_ctx,
                                                                   pwd)))) {
@@ -3247,7 +3349,7 @@ static NTSTATUS set_user_info_23(TALLOC_CTX *mem_ctx, SAM_USER_INFO_23 *id23,
                TALLOC_FREE(pwd);
                return status;
        }
+
        TALLOC_FREE(pwd);
 
        return NT_STATUS_OK;
@@ -3257,20 +3359,28 @@ static NTSTATUS set_user_info_23(TALLOC_CTX *mem_ctx, SAM_USER_INFO_23 *id23,
  set_user_info_pw
  ********************************************************************/
 
-static BOOL set_user_info_pw(uint8 *pass, struct samu *pwd)
+static bool set_user_info_pw(uint8 *pass, struct samu *pwd)
 {
-       uint32 len;
-       pstring plaintext_buf;
+       uint32 len = 0;
+       char *plaintext_buf = NULL;
        uint32 acct_ctrl;
+       time_t last_set_time;
+       enum pdb_value_state last_set_state;
+
        DEBUG(5, ("Attempting administrator password change for user %s\n",
                  pdb_get_username(pwd)));
 
        acct_ctrl = pdb_get_acct_ctrl(pwd);
-
-       ZERO_STRUCT(plaintext_buf);
-       if (!decode_pw_buffer(pass, plaintext_buf, 256, &len, STR_UNICODE)) {
+       /* we need to know if it's expired, because this is an admin change, not a
+          user change, so it's still expired when we're done */
+       last_set_state = pdb_get_init_flags(pwd, PDB_PASSLASTSET);
+       last_set_time = pdb_get_pass_last_set_time(pwd);
+
+       if (!decode_pw_buffer(talloc_tos(),
+                               pass,
+                               &plaintext_buf,
+                               &len,
+                               STR_UNICODE)) {
                TALLOC_FREE(pwd);
                return False;
        }
@@ -3279,7 +3389,7 @@ static BOOL set_user_info_pw(uint8 *pass, struct samu *pwd)
                TALLOC_FREE(pwd);
                return False;
        }
+
        /* if it's a trust account, don't update /etc/passwd */
        if ( ( (acct_ctrl &  ACB_DOMTRUST) == ACB_DOMTRUST ) ||
                ( (acct_ctrl &  ACB_WSTRUST) ==  ACB_WSTRUST) ||
@@ -3299,18 +3409,21 @@ static BOOL set_user_info_pw(uint8 *pass, struct samu *pwd)
                        if ((passwd = Get_Pwnam(pdb_get_username(pwd))) == NULL) {
                                DEBUG(1, ("chgpasswd: Username does not exist in system !?!\n"));
                        }
-                       
+
                        if(!chgpasswd(pdb_get_username(pwd), passwd, "", plaintext_buf, True)) {
                                TALLOC_FREE(pwd);
                                return False;
                        }
                }
        }
-       ZERO_STRUCT(plaintext_buf);
+
+       memset(plaintext_buf, '\0', strlen(plaintext_buf));
+
+       /* restore last set time as this is an admin change, not a user pw change */
+       pdb_set_pass_last_set_time (pwd, last_set_time, last_set_state);
+
        DEBUG(5,("set_user_info_pw: pdb_update_pwd()\n"));
+
        /* update the SAMBA password */
        if(!NT_STATUS_IS_OK(pdb_update_sam_account(pwd))) {
                TALLOC_FREE(pwd);
@@ -3378,8 +3491,8 @@ NTSTATUS _samr_set_userinfo(pipes_struct *p, SAMR_Q_SET_USERINFO *q_u, SAMR_R_SE
        SAM_USERINFO_CTR *ctr = q_u->ctr;
        uint32 acc_granted;
        uint32 acc_required;
-       BOOL ret;
-       BOOL has_enough_rights = False;
+       bool ret;
+       bool has_enough_rights = False;
        uint32 acb_info;
        DISP_INFO *disp_info = NULL;
 
@@ -3414,7 +3527,8 @@ NTSTATUS _samr_set_userinfo(pipes_struct *p, SAMR_Q_SET_USERINFO *q_u, SAMR_R_SE
                return r_u->status;
        }
 
-       DEBUG(5, ("_samr_set_userinfo: sid:%s, level:%d\n", sid_string_static(&sid), switch_value));
+       DEBUG(5, ("_samr_set_userinfo: sid:%s, level:%d\n",
+                 sid_string_dbg(&sid), switch_value));
 
        if (ctr == NULL) {
                DEBUG(5, ("_samr_set_userinfo: NULL info level\n"));
@@ -3470,7 +3584,7 @@ NTSTATUS _samr_set_userinfo(pipes_struct *p, SAMR_Q_SET_USERINFO *q_u, SAMR_R_SE
                        }
                        SamOEMhashBlob(ctr->info.id24->pass, 516, &p->session_key);
 
-                       dump_data(100, (char *)ctr->info.id24->pass, 516);
+                       dump_data(100, ctr->info.id24->pass, 516);
 
                        if (!set_user_info_pw(ctr->info.id24->pass, pwd))
                                r_u->status = NT_STATUS_ACCESS_DENIED;
@@ -3482,7 +3596,7 @@ NTSTATUS _samr_set_userinfo(pipes_struct *p, SAMR_Q_SET_USERINFO *q_u, SAMR_R_SE
                        }
                        encode_or_decode_arc4_passwd_buffer(ctr->info.id25->pass, &p->session_key);
 
-                       dump_data(100, (char *)ctr->info.id25->pass, 532);
+                       dump_data(100, ctr->info.id25->pass, 532);
 
                        r_u->status = set_user_info_25(p->mem_ctx,
                                                       ctr->info.id25, pwd);
@@ -3499,7 +3613,7 @@ NTSTATUS _samr_set_userinfo(pipes_struct *p, SAMR_Q_SET_USERINFO *q_u, SAMR_R_SE
                        }
                        encode_or_decode_arc4_passwd_buffer(ctr->info.id26->pass, &p->session_key);
 
-                       dump_data(100, (char *)ctr->info.id26->pass, 516);
+                       dump_data(100, ctr->info.id26->pass, 516);
 
                        if (!set_user_info_pw(ctr->info.id26->pass, pwd))
                                r_u->status = NT_STATUS_ACCESS_DENIED;
@@ -3511,7 +3625,7 @@ NTSTATUS _samr_set_userinfo(pipes_struct *p, SAMR_Q_SET_USERINFO *q_u, SAMR_R_SE
                        }
                        SamOEMhashBlob(ctr->info.id23->pass, 516, &p->session_key);
 
-                       dump_data(100, (char *)ctr->info.id23->pass, 516);
+                       dump_data(100, ctr->info.id23->pass, 516);
 
                        r_u->status = set_user_info_23(p->mem_ctx,
                                                       ctr->info.id23, pwd);
@@ -3548,8 +3662,8 @@ NTSTATUS _samr_set_userinfo2(pipes_struct *p, SAMR_Q_SET_USERINFO2 *q_u, SAMR_R_
        uint16 switch_value = q_u->switch_value;
        uint32 acc_granted;
        uint32 acc_required;
-       BOOL ret;
-       BOOL has_enough_rights = False;
+       bool ret;
+       bool has_enough_rights = False;
        uint32 acb_info;
        DISP_INFO *disp_info = NULL;
 
@@ -3574,7 +3688,8 @@ NTSTATUS _samr_set_userinfo2(pipes_struct *p, SAMR_Q_SET_USERINFO2 *q_u, SAMR_R_
                return r_u->status;
        }
 
-       DEBUG(5, ("samr_reply_set_userinfo2: sid:%s\n", sid_string_static(&sid)));
+       DEBUG(5, ("samr_reply_set_userinfo2: sid:%s\n",
+                 sid_string_dbg(&sid)));
 
        if (ctr == NULL) {
                DEBUG(5, ("samr_reply_set_userinfo2: NULL info level\n"));
@@ -3645,7 +3760,7 @@ NTSTATUS _samr_set_userinfo2(pipes_struct *p, SAMR_Q_SET_USERINFO2 *q_u, SAMR_R_
                        }
                        SamOEMhashBlob(ctr->info.id23->pass, 516, &p->session_key);
 
-                       dump_data(100, (char *)ctr->info.id23->pass, 516);
+                       dump_data(100, ctr->info.id23->pass, 516);
 
                        r_u->status = set_user_info_23(p->mem_ctx,
                                                       ctr->info.id23, pwd);
@@ -3656,7 +3771,7 @@ NTSTATUS _samr_set_userinfo2(pipes_struct *p, SAMR_Q_SET_USERINFO2 *q_u, SAMR_R_
                        }
                        encode_or_decode_arc4_passwd_buffer(ctr->info.id26->pass, &p->session_key);
 
-                       dump_data(100, (char *)ctr->info.id26->pass, 516);
+                       dump_data(100, ctr->info.id26->pass, 516);
 
                        if (!set_user_info_pw(ctr->info.id26->pass, pwd))
                                r_u->status = NT_STATUS_ACCESS_DENIED;
@@ -3715,10 +3830,14 @@ NTSTATUS _samr_query_useraliases(pipes_struct *p, SAMR_Q_QUERY_USERALIASES *q_u,
            !sid_check_is_builtin(&info->sid))
                return NT_STATUS_OBJECT_TYPE_MISMATCH;
 
-       members = TALLOC_ARRAY(p->mem_ctx, DOM_SID, q_u->num_sids1);
+       if (q_u->num_sids1) {
+               members = TALLOC_ARRAY(p->mem_ctx, DOM_SID, q_u->num_sids1);
 
-       if (members == NULL)
-               return NT_STATUS_NO_MEMORY;
+               if (members == NULL)
+                       return NT_STATUS_NO_MEMORY;
+       } else {
+               members = NULL;
+       }
 
        for (i=0; i<q_u->num_sids1; i++)
                sid_copy(&members[i], &q_u->sid[i].sid);
@@ -3766,7 +3885,7 @@ NTSTATUS _samr_query_aliasmem(pipes_struct *p, SAMR_Q_QUERY_ALIASMEM *q_u, SAMR_
                return r_u->status;
        }
 
-       DEBUG(10, ("sid is %s\n", sid_string_static(&alias_sid)));
+       DEBUG(10, ("sid is %s\n", sid_string_dbg(&alias_sid)));
 
        become_root();
        status = pdb_enum_aliasmem(&alias_sid, &sids, &num_sids);
@@ -3776,10 +3895,14 @@ NTSTATUS _samr_query_aliasmem(pipes_struct *p, SAMR_Q_QUERY_ALIASMEM *q_u, SAMR_
                return status;
        }
 
-       sid = TALLOC_ZERO_ARRAY(p->mem_ctx, DOM_SID2, num_sids);        
-       if (num_sids!=0 && sid == NULL) {
-               SAFE_FREE(sids);
-               return NT_STATUS_NO_MEMORY;
+       if (num_sids) {
+               sid = TALLOC_ZERO_ARRAY(p->mem_ctx, DOM_SID2, num_sids);        
+               if (sid == NULL) {
+                       SAFE_FREE(sids);
+                       return NT_STATUS_NO_MEMORY;
+               }
+       } else {
+               sid = NULL;
        }
 
        for (i = 0; i < num_sids; i++) {
@@ -3788,7 +3911,7 @@ NTSTATUS _samr_query_aliasmem(pipes_struct *p, SAMR_Q_QUERY_ALIASMEM *q_u, SAMR_
 
        init_samr_r_query_aliasmem(r_u, num_sids, sid, NT_STATUS_OK);
 
-       SAFE_FREE(sids);
+       TALLOC_FREE(sids);
 
        return NT_STATUS_OK;
 }
@@ -3800,7 +3923,6 @@ NTSTATUS _samr_query_aliasmem(pipes_struct *p, SAMR_Q_QUERY_ALIASMEM *q_u, SAMR_
 NTSTATUS _samr_query_groupmem(pipes_struct *p, SAMR_Q_QUERY_GROUPMEM *q_u, SAMR_R_QUERY_GROUPMEM *r_u)
 {
        DOM_SID group_sid;
-       fstring group_sid_str;
        size_t i, num_members;
 
        uint32 *rid=NULL;
@@ -3818,11 +3940,11 @@ NTSTATUS _samr_query_groupmem(pipes_struct *p, SAMR_Q_QUERY_GROUPMEM *q_u, SAMR_
                return r_u->status;
        }
                
-       sid_to_string(group_sid_str, &group_sid);
-       DEBUG(10, ("sid is %s\n", group_sid_str));
+       DEBUG(10, ("sid is %s\n", sid_string_dbg(&group_sid)));
 
        if (!sid_check_is_in_our_domain(&group_sid)) {
-               DEBUG(3, ("sid %s is not in our domain\n", group_sid_str));
+               DEBUG(3, ("sid %s is not in our domain\n",
+                         sid_string_dbg(&group_sid)));
                return NT_STATUS_NO_SUCH_GROUP;
        }
 
@@ -3836,10 +3958,14 @@ NTSTATUS _samr_query_groupmem(pipes_struct *p, SAMR_Q_QUERY_GROUPMEM *q_u, SAMR_
        if (!NT_STATUS_IS_OK(result))
                return result;
 
-       attr=TALLOC_ZERO_ARRAY(p->mem_ctx, uint32, num_members);
-       
-       if ((num_members!=0) && (attr==NULL))
-               return NT_STATUS_NO_MEMORY;
+       if (num_members) {
+               attr=TALLOC_ZERO_ARRAY(p->mem_ctx, uint32, num_members);
+               if (attr == NULL) {
+                       return NT_STATUS_NO_MEMORY;
+               }
+       } else {
+               attr = NULL;
+       }
        
        for (i=0; i<num_members; i++)
                attr[i] = SID_NAME_USER;
@@ -3858,7 +3984,7 @@ NTSTATUS _samr_add_aliasmem(pipes_struct *p, SAMR_Q_ADD_ALIASMEM *q_u, SAMR_R_AD
        DOM_SID alias_sid;
        uint32 acc_granted;
        SE_PRIV se_rights;
-       BOOL can_add_accounts;
+       bool can_add_accounts;
        NTSTATUS ret;
        DISP_INFO *disp_info = NULL;
 
@@ -3870,7 +3996,7 @@ NTSTATUS _samr_add_aliasmem(pipes_struct *p, SAMR_Q_ADD_ALIASMEM *q_u, SAMR_R_AD
                return r_u->status;
        }
                
-       DEBUG(10, ("sid is %s\n", sid_string_static(&alias_sid)));
+       DEBUG(10, ("sid is %s\n", sid_string_dbg(&alias_sid)));
        
        se_priv_copy( &se_rights, &se_add_users );
        can_add_accounts = user_has_privileges( p->pipe_user.nt_user_token, &se_rights );
@@ -3903,7 +4029,7 @@ NTSTATUS _samr_del_aliasmem(pipes_struct *p, SAMR_Q_DEL_ALIASMEM *q_u, SAMR_R_DE
        DOM_SID alias_sid;
        uint32 acc_granted;
        SE_PRIV se_rights;
-       BOOL can_add_accounts;
+       bool can_add_accounts;
        NTSTATUS ret;
        DISP_INFO *disp_info = NULL;
 
@@ -3916,7 +4042,7 @@ NTSTATUS _samr_del_aliasmem(pipes_struct *p, SAMR_Q_DEL_ALIASMEM *q_u, SAMR_R_DE
        }
        
        DEBUG(10, ("_samr_del_aliasmem:sid is %s\n",
-                  sid_string_static(&alias_sid)));
+                  sid_string_dbg(&alias_sid)));
 
        se_priv_copy( &se_rights, &se_add_users );
        can_add_accounts = user_has_privileges( p->pipe_user.nt_user_token, &se_rights );
@@ -3950,7 +4076,7 @@ NTSTATUS _samr_add_groupmem(pipes_struct *p, SAMR_Q_ADD_GROUPMEM *q_u, SAMR_R_AD
        uint32 group_rid;
        uint32 acc_granted;
        SE_PRIV se_rights;
-       BOOL can_add_accounts;
+       bool can_add_accounts;
        DISP_INFO *disp_info = NULL;
 
        /* Find the policy handle. Open a policy on it. */
@@ -3961,7 +4087,7 @@ NTSTATUS _samr_add_groupmem(pipes_struct *p, SAMR_Q_ADD_GROUPMEM *q_u, SAMR_R_AD
                return r_u->status;
        }
 
-       DEBUG(10, ("sid is %s\n", sid_string_static(&group_sid)));
+       DEBUG(10, ("sid is %s\n", sid_string_dbg(&group_sid)));
 
        if (!sid_peek_check_rid(get_global_sam_sid(), &group_sid,
                                &group_rid)) {
@@ -3998,7 +4124,7 @@ NTSTATUS _samr_del_groupmem(pipes_struct *p, SAMR_Q_DEL_GROUPMEM *q_u, SAMR_R_DE
        uint32 group_rid;
        uint32 acc_granted;
        SE_PRIV se_rights;
-       BOOL can_add_accounts;
+       bool can_add_accounts;
        DISP_INFO *disp_info = NULL;
 
        /*
@@ -4049,10 +4175,10 @@ NTSTATUS _samr_delete_dom_user(pipes_struct *p, SAMR_Q_DELETE_DOM_USER *q_u, SAM
        DOM_SID user_sid;
        struct samu *sam_pass=NULL;
        uint32 acc_granted;
-       BOOL can_add_accounts;
+       bool can_add_accounts;
        uint32 acb_info;
        DISP_INFO *disp_info = NULL;
-       BOOL ret;
+       bool ret;
 
        DEBUG(5, ("_samr_delete_dom_user: %d\n", __LINE__));
 
@@ -4078,7 +4204,7 @@ NTSTATUS _samr_delete_dom_user(pipes_struct *p, SAMR_Q_DELETE_DOM_USER *q_u, SAM
 
        if( !ret ) {
                DEBUG(5,("_samr_delete_dom_user:User %s doesn't exist.\n", 
-                       sid_string_static(&user_sid)));
+                       sid_string_dbg(&user_sid)));
                TALLOC_FREE(sam_pass);
                return NT_STATUS_NO_SUCH_USER;
        }
@@ -4133,7 +4259,7 @@ NTSTATUS _samr_delete_dom_group(pipes_struct *p, SAMR_Q_DELETE_DOM_GROUP *q_u, S
        uint32 group_rid;
        uint32 acc_granted;
        SE_PRIV se_rights;
-       BOOL can_add_accounts;
+       bool can_add_accounts;
        DISP_INFO *disp_info = NULL;
 
        DEBUG(5, ("samr_delete_dom_group: %d\n", __LINE__));
@@ -4146,7 +4272,7 @@ NTSTATUS _samr_delete_dom_group(pipes_struct *p, SAMR_Q_DELETE_DOM_GROUP *q_u, S
                return r_u->status;
        }
 
-       DEBUG(10, ("sid is %s\n", sid_string_static(&group_sid)));
+       DEBUG(10, ("sid is %s\n", sid_string_dbg(&group_sid)));
 
        if (!sid_peek_check_rid(get_global_sam_sid(), &group_sid,
                                &group_rid)) {
@@ -4171,7 +4297,7 @@ NTSTATUS _samr_delete_dom_group(pipes_struct *p, SAMR_Q_DELETE_DOM_GROUP *q_u, S
        if ( !NT_STATUS_IS_OK(r_u->status) ) {
                DEBUG(5,("_samr_delete_dom_group: Failed to delete mapping "
                         "entry for group %s: %s\n",
-                        sid_string_static(&group_sid),
+                        sid_string_dbg(&group_sid),
                         nt_errstr(r_u->status)));
                return r_u->status;
        }
@@ -4193,8 +4319,8 @@ NTSTATUS _samr_delete_dom_alias(pipes_struct *p, SAMR_Q_DELETE_DOM_ALIAS *q_u, S
        DOM_SID alias_sid;
        uint32 acc_granted;
        SE_PRIV se_rights;
-       BOOL can_add_accounts;
-       BOOL ret;
+       bool can_add_accounts;
+       NTSTATUS status;
        DISP_INFO *disp_info = NULL;
 
        DEBUG(5, ("_samr_delete_dom_alias: %d\n", __LINE__));
@@ -4211,7 +4337,7 @@ NTSTATUS _samr_delete_dom_alias(pipes_struct *p, SAMR_Q_DELETE_DOM_ALIAS *q_u, S
                return r_u->status;
        }
 
-       DEBUG(10, ("sid is %s\n", sid_string_static(&alias_sid)));
+       DEBUG(10, ("sid is %s\n", sid_string_dbg(&alias_sid)));
 
        /* Don't let Windows delete builtin groups */
 
@@ -4233,15 +4359,15 @@ NTSTATUS _samr_delete_dom_alias(pipes_struct *p, SAMR_Q_DELETE_DOM_ALIAS *q_u, S
                become_root();
 
        /* Have passdb delete the alias */
-       ret = pdb_delete_alias(&alias_sid);
+       status = pdb_delete_alias(&alias_sid);
        
        if ( can_add_accounts )
                unbecome_root();
                
        /******** END SeAddUsers BLOCK *********/
 
-       if ( !ret )
-               return NT_STATUS_ACCESS_DENIED;
+       if ( !NT_STATUS_IS_OK(status))
+               return status;
 
        if (!close_policy_hnd(p, &q_u->alias_pol))
                return NT_STATUS_OBJECT_NAME_INVALID;
@@ -4263,7 +4389,7 @@ NTSTATUS _samr_create_dom_group(pipes_struct *p, SAMR_Q_CREATE_DOM_GROUP *q_u, S
        struct samr_info *info;
        uint32 acc_granted;
        SE_PRIV se_rights;
-       BOOL can_add_accounts;
+       bool can_add_accounts;
        DISP_INFO *disp_info = NULL;
 
        /* Find the policy handle. Open a policy on it. */
@@ -4341,7 +4467,7 @@ NTSTATUS _samr_create_dom_alias(pipes_struct *p, SAMR_Q_CREATE_DOM_ALIAS *q_u, S
        gid_t gid;
        NTSTATUS result;
        SE_PRIV se_rights;
-       BOOL can_add_accounts;
+       bool can_add_accounts;
        DISP_INFO *disp_info = NULL;
 
        /* Find the policy handle. Open a policy on it. */
@@ -4355,7 +4481,7 @@ NTSTATUS _samr_create_dom_alias(pipes_struct *p, SAMR_Q_CREATE_DOM_ALIAS *q_u, S
        if (!sid_equal(&dom_sid, get_global_sam_sid()))
                return NT_STATUS_ACCESS_DENIED;
 
-       unistr2_to_ascii(name, &q_u->uni_acct_desc, sizeof(name)-1);
+       unistr2_to_ascii(name, &q_u->uni_acct_desc, sizeof(name));
 
        se_priv_copy( &se_rights, &se_add_users );
        can_add_accounts = user_has_privileges( p->pipe_user.nt_user_token, &se_rights );
@@ -4428,7 +4554,7 @@ NTSTATUS _samr_query_groupinfo(pipes_struct *p, SAMR_Q_QUERY_GROUPINFO *q_u, SAM
        GROUP_MAP map;
        GROUP_INFO_CTR *ctr;
        uint32 acc_granted;
-       BOOL ret;
+       bool ret;
 
        if (!get_lsa_policy_samr_sid(p, &q_u->pol, &group_sid, &acc_granted, NULL)) 
                return NT_STATUS_INVALID_HANDLE;
@@ -4438,7 +4564,7 @@ NTSTATUS _samr_query_groupinfo(pipes_struct *p, SAMR_Q_QUERY_GROUPINFO *q_u, SAM
        }
                
        become_root();
-       ret = NT_STATUS_IS_OK(get_domain_group_from_sid(&group_sid, &map));
+       ret = get_domain_group_from_sid(group_sid, &map);
        unbecome_root();
        if (!ret)
                return NT_STATUS_INVALID_HANDLE;
@@ -4523,8 +4649,8 @@ NTSTATUS _samr_set_groupinfo(pipes_struct *p, SAMR_Q_SET_GROUPINFO *q_u, SAMR_R_
        GROUP_INFO_CTR *ctr;
        uint32 acc_granted;
        NTSTATUS ret;
-       BOOL result;
-       BOOL can_mod_accounts;
+       bool result;
+       bool can_mod_accounts;
        DISP_INFO *disp_info = NULL;
 
        if (!get_lsa_policy_samr_sid(p, &q_u->pol, &group_sid, &acc_granted, &disp_info))
@@ -4535,7 +4661,7 @@ NTSTATUS _samr_set_groupinfo(pipes_struct *p, SAMR_Q_SET_GROUPINFO *q_u, SAMR_R_
        }
 
        become_root();
-       result = NT_STATUS_IS_OK(get_domain_group_from_sid(&group_sid, &map));
+       result = get_domain_group_from_sid(group_sid, &map);
        unbecome_root();
        if (!result)
                return NT_STATUS_NO_SUCH_GROUP;
@@ -4544,10 +4670,10 @@ NTSTATUS _samr_set_groupinfo(pipes_struct *p, SAMR_Q_SET_GROUPINFO *q_u, SAMR_R_
 
        switch (ctr->switch_value1) {
                case 1:
-                       unistr2_to_ascii(map.comment, &(ctr->group.info1.uni_acct_desc), sizeof(map.comment)-1);
+                       unistr2_to_ascii(map.comment, &(ctr->group.info1.uni_acct_desc), sizeof(map.comment));
                        break;
                case 4:
-                       unistr2_to_ascii(map.comment, &(ctr->group.info4.uni_acct_desc), sizeof(map.comment)-1);
+                       unistr2_to_ascii(map.comment, &(ctr->group.info4.uni_acct_desc), sizeof(map.comment));
                        break;
                default:
                        return NT_STATUS_INVALID_INFO_CLASS;
@@ -4586,8 +4712,8 @@ NTSTATUS _samr_set_aliasinfo(pipes_struct *p, SAMR_Q_SET_ALIASINFO *q_u, SAMR_R_
        struct acct_info info;
        ALIAS_INFO_CTR *ctr;
        uint32 acc_granted;
-       BOOL ret;
-       BOOL can_mod_accounts;
+       bool can_mod_accounts;
+       NTSTATUS status;
        DISP_INFO *disp_info = NULL;
 
        if (!get_lsa_policy_samr_sid(p, &q_u->alias_pol, &group_sid, &acc_granted, &disp_info))
@@ -4602,18 +4728,16 @@ NTSTATUS _samr_set_aliasinfo(pipes_struct *p, SAMR_Q_SET_ALIASINFO *q_u, SAMR_R_
        /* get the current group information */
 
        become_root();
-       ret = pdb_get_aliasinfo( &group_sid, &info );
+       status = pdb_get_aliasinfo( &group_sid, &info );
        unbecome_root();
 
-       if ( !ret ) {
-               return NT_STATUS_NO_SUCH_ALIAS;
-       }
+       if ( !NT_STATUS_IS_OK(status))
+               return status;
 
        switch (ctr->level) {
                case 2:
                {
-                       fstring group_name;
-                       NTSTATUS status;
+                       fstring group_name, acct_name;
 
                        /* We currently do not support renaming groups in the
                           the BUILTIN domain.  Refer to util_builtin.c to understand 
@@ -4624,12 +4748,21 @@ NTSTATUS _samr_set_aliasinfo(pipes_struct *p, SAMR_Q_SET_ALIASINFO *q_u, SAMR_R_
                                return NT_STATUS_SPECIAL_ACCOUNT;
                        }
 
-                       /* There has to be a valid name */
+                       /* There has to be a valid name (and it has to be different) */
+
                        if ( !ctr->alias.info2.name.string ) 
                                return NT_STATUS_INVALID_PARAMETER;
 
-                       unistr2_to_ascii( info.acct_name, ctr->alias.info2.name.string, 
-                               sizeof(info.acct_name)-1 );
+                       unistr2_to_ascii( acct_name, ctr->alias.info2.name.string, 
+                               sizeof(acct_name));
+
+                       /* If the name is the same just reply "ok".  Yes this
+                          doesn't allow you to change the case of a group name. */
+
+                       if ( strequal( acct_name, info.acct_name ) )
+                               return NT_STATUS_OK;
+
+                       fstrcpy( info.acct_name, acct_name );
 
                        /* make sure the name doesn't already exist as a user 
                           or local group */
@@ -4644,7 +4777,7 @@ NTSTATUS _samr_set_aliasinfo(pipes_struct *p, SAMR_Q_SET_ALIASINFO *q_u, SAMR_R_
                        if ( ctr->alias.info3.description.string ) {
                                unistr2_to_ascii( info.acct_desc, 
                                        ctr->alias.info3.description.string, 
-                                       sizeof(info.acct_desc)-1 );
+                                       sizeof(info.acct_desc));
                        }
                        else
                                fstrcpy( info.acct_desc, "" );
@@ -4660,18 +4793,17 @@ NTSTATUS _samr_set_aliasinfo(pipes_struct *p, SAMR_Q_SET_ALIASINFO *q_u, SAMR_R_
         if ( can_mod_accounts )
                 become_root();
 
-        ret = pdb_set_aliasinfo( &group_sid, &info );
+        status = pdb_set_aliasinfo( &group_sid, &info );
 
         if ( can_mod_accounts )
                 unbecome_root();
 
         /******** End SeAddUsers BLOCK *********/
 
-       if (ret) {
+       if (NT_STATUS_IS_OK(status))
                force_flush_samr_cache(disp_info);
-       }
 
-       return ret ? NT_STATUS_OK : NT_STATUS_ACCESS_DENIED;
+       return status;
 }
 
 /*********************************************************************
@@ -4711,7 +4843,7 @@ NTSTATUS _samr_open_group(pipes_struct *p, SAMR_Q_OPEN_GROUP *q_u, SAMR_R_OPEN_G
        size_t            sd_size;
        NTSTATUS          status;
        fstring sid_string;
-       BOOL ret;
+       bool ret;
        SE_PRIV se_rights;
 
        if (!get_lsa_policy_samr_sid(p, &q_u->domain_pol, &sid, &acc_granted, NULL)) 
@@ -4743,7 +4875,7 @@ NTSTATUS _samr_open_group(pipes_struct *p, SAMR_Q_OPEN_GROUP *q_u, SAMR_R_OPEN_G
 
        sid_copy(&info_sid, get_global_sam_sid());
        sid_append_rid(&info_sid, q_u->rid_group);
-       sid_to_string(sid_string, &info_sid);
+       sid_to_fstring(sid_string, &info_sid);
 
        if ((info = get_samr_info_by_sid(&info_sid)) == NULL)
                return NT_STATUS_NO_MEMORY;
@@ -4754,7 +4886,7 @@ NTSTATUS _samr_open_group(pipes_struct *p, SAMR_Q_OPEN_GROUP *q_u, SAMR_R_OPEN_G
 
        /* check if that group really exists */
        become_root();
-       ret = NT_STATUS_IS_OK(get_domain_group_from_sid(&info->sid, &map));
+       ret = get_domain_group_from_sid(info->sid, &map);
        unbecome_root();
        if (!ret)
                return NT_STATUS_NO_SUCH_GROUP;
@@ -4780,12 +4912,12 @@ NTSTATUS _samr_remove_sid_foreign_domain(pipes_struct *p,
        DISP_INFO *disp_info = NULL;
 
        sid_copy( &delete_sid, &q_u->sid.sid );
-       
+
        DEBUG(5,("_samr_remove_sid_foreign_domain: removing SID [%s]\n",
-               sid_string_static(&delete_sid)));
-               
+               sid_string_dbg(&delete_sid)));
+
        /* Find the policy handle. Open a policy on it. */
-       
+
        if (!get_lsa_policy_samr_sid(p, &q_u->dom_pol, &domain_sid,
                                     &acc_granted, &disp_info)) 
                return NT_STATUS_INVALID_HANDLE;
@@ -4796,8 +4928,8 @@ NTSTATUS _samr_remove_sid_foreign_domain(pipes_struct *p,
        if (!NT_STATUS_IS_OK(result)) 
                return result;
                        
-       DEBUG(8, ("_samr_remove_sid_foreign_domain:sid is %s\n", 
-               sid_string_static(&domain_sid)));
+       DEBUG(8, ("_samr_remove_sid_foreign_domain:sid is %s\n",
+                 sid_string_dbg(&domain_sid)));
 
        /* we can only delete a user from a group since we don't have 
           nested groups anyways.  So in the latter case, just say OK */
@@ -4816,8 +4948,8 @@ NTSTATUS _samr_remove_sid_foreign_domain(pipes_struct *p,
        if (!sid_check_is_builtin(&domain_sid)) {
                DEBUG(1,("_samr_remove_sid_foreign_domain: domain_sid = %s, "
                         "global_sam_sid() = %s\n",
-                        sid_string_static(&domain_sid),
-                        sid_string_static(get_global_sam_sid())));
+                        sid_string_dbg(&domain_sid),
+                        sid_string_dbg(get_global_sam_sid())));
                DEBUGADD(1,("please report to samba-technical@samba.org!\n"));
                return NT_STATUS_OK;
        }